Commit | Line | Data |
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252b5132 | 1 | /* tc-mips.c -- assemble code for a MIPS chip. |
6f2750fe | 2 | Copyright (C) 1993-2016 Free Software Foundation, Inc. |
252b5132 RH |
3 | Contributed by the OSF and Ralph Campbell. |
4 | Written by Keith Knowles and Ralph Campbell, working independently. | |
5 | Modified for ECOFF and R4000 support by Ian Lance Taylor of Cygnus | |
6 | Support. | |
7 | ||
8 | This file is part of GAS. | |
9 | ||
10 | GAS is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 12 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
13 | any later version. |
14 | ||
15 | GAS is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
22 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
23 | 02110-1301, USA. */ | |
252b5132 RH |
24 | |
25 | #include "as.h" | |
26 | #include "config.h" | |
27 | #include "subsegs.h" | |
3882b010 | 28 | #include "safe-ctype.h" |
252b5132 | 29 | |
252b5132 RH |
30 | #include "opcode/mips.h" |
31 | #include "itbl-ops.h" | |
c5dd6aab | 32 | #include "dwarf2dbg.h" |
5862107c | 33 | #include "dw2gencfi.h" |
252b5132 | 34 | |
42429eac RS |
35 | /* Check assumptions made in this file. */ |
36 | typedef char static_assert1[sizeof (offsetT) < 8 ? -1 : 1]; | |
37 | typedef char static_assert2[sizeof (valueT) < 8 ? -1 : 1]; | |
38 | ||
252b5132 RH |
39 | #ifdef DEBUG |
40 | #define DBG(x) printf x | |
41 | #else | |
42 | #define DBG(x) | |
43 | #endif | |
44 | ||
263b2574 | 45 | #define streq(a, b) (strcmp (a, b) == 0) |
46 | ||
9e12b7a2 RS |
47 | #define SKIP_SPACE_TABS(S) \ |
48 | do { while (*(S) == ' ' || *(S) == '\t') ++(S); } while (0) | |
49 | ||
252b5132 | 50 | /* Clean up namespace so we can include obj-elf.h too. */ |
17a2f251 TS |
51 | static int mips_output_flavor (void); |
52 | static int mips_output_flavor (void) { return OUTPUT_FLAVOR; } | |
252b5132 RH |
53 | #undef OBJ_PROCESS_STAB |
54 | #undef OUTPUT_FLAVOR | |
55 | #undef S_GET_ALIGN | |
56 | #undef S_GET_SIZE | |
57 | #undef S_SET_ALIGN | |
58 | #undef S_SET_SIZE | |
252b5132 RH |
59 | #undef obj_frob_file |
60 | #undef obj_frob_file_after_relocs | |
61 | #undef obj_frob_symbol | |
62 | #undef obj_pop_insert | |
63 | #undef obj_sec_sym_ok_for_reloc | |
64 | #undef OBJ_COPY_SYMBOL_ATTRIBUTES | |
65 | ||
66 | #include "obj-elf.h" | |
67 | /* Fix any of them that we actually care about. */ | |
68 | #undef OUTPUT_FLAVOR | |
69 | #define OUTPUT_FLAVOR mips_output_flavor() | |
252b5132 | 70 | |
252b5132 | 71 | #include "elf/mips.h" |
252b5132 RH |
72 | |
73 | #ifndef ECOFF_DEBUGGING | |
74 | #define NO_ECOFF_DEBUGGING | |
75 | #define ECOFF_DEBUGGING 0 | |
76 | #endif | |
77 | ||
ecb4347a DJ |
78 | int mips_flag_mdebug = -1; |
79 | ||
dcd410fe RO |
80 | /* Control generation of .pdr sections. Off by default on IRIX: the native |
81 | linker doesn't know about and discards them, but relocations against them | |
82 | remain, leading to rld crashes. */ | |
83 | #ifdef TE_IRIX | |
84 | int mips_flag_pdr = FALSE; | |
85 | #else | |
86 | int mips_flag_pdr = TRUE; | |
87 | #endif | |
88 | ||
252b5132 RH |
89 | #include "ecoff.h" |
90 | ||
252b5132 | 91 | static char *mips_regmask_frag; |
351cdf24 | 92 | static char *mips_flags_frag; |
252b5132 | 93 | |
85b51719 | 94 | #define ZERO 0 |
741fe287 | 95 | #define ATREG 1 |
df58fc94 RS |
96 | #define S0 16 |
97 | #define S7 23 | |
252b5132 RH |
98 | #define TREG 24 |
99 | #define PIC_CALL_REG 25 | |
100 | #define KT0 26 | |
101 | #define KT1 27 | |
102 | #define GP 28 | |
103 | #define SP 29 | |
104 | #define FP 30 | |
105 | #define RA 31 | |
106 | ||
107 | #define ILLEGAL_REG (32) | |
108 | ||
741fe287 MR |
109 | #define AT mips_opts.at |
110 | ||
252b5132 RH |
111 | extern int target_big_endian; |
112 | ||
252b5132 | 113 | /* The name of the readonly data section. */ |
e8044f35 | 114 | #define RDATA_SECTION_NAME ".rodata" |
252b5132 | 115 | |
a4e06468 RS |
116 | /* Ways in which an instruction can be "appended" to the output. */ |
117 | enum append_method { | |
118 | /* Just add it normally. */ | |
119 | APPEND_ADD, | |
120 | ||
121 | /* Add it normally and then add a nop. */ | |
122 | APPEND_ADD_WITH_NOP, | |
123 | ||
124 | /* Turn an instruction with a delay slot into a "compact" version. */ | |
125 | APPEND_ADD_COMPACT, | |
126 | ||
127 | /* Insert the instruction before the last one. */ | |
128 | APPEND_SWAP | |
129 | }; | |
130 | ||
47e39b9d RS |
131 | /* Information about an instruction, including its format, operands |
132 | and fixups. */ | |
133 | struct mips_cl_insn | |
134 | { | |
135 | /* The opcode's entry in mips_opcodes or mips16_opcodes. */ | |
136 | const struct mips_opcode *insn_mo; | |
137 | ||
47e39b9d | 138 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is |
5c04167a RS |
139 | a copy of INSN_MO->match with the operands filled in. If we have |
140 | decided to use an extended MIPS16 instruction, this includes the | |
141 | extension. */ | |
47e39b9d RS |
142 | unsigned long insn_opcode; |
143 | ||
144 | /* The frag that contains the instruction. */ | |
145 | struct frag *frag; | |
146 | ||
147 | /* The offset into FRAG of the first instruction byte. */ | |
148 | long where; | |
149 | ||
150 | /* The relocs associated with the instruction, if any. */ | |
151 | fixS *fixp[3]; | |
152 | ||
a38419a5 RS |
153 | /* True if this entry cannot be moved from its current position. */ |
154 | unsigned int fixed_p : 1; | |
47e39b9d | 155 | |
708587a4 | 156 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
157 | unsigned int noreorder_p : 1; |
158 | ||
2fa15973 RS |
159 | /* True for mips16 instructions that jump to an absolute address. */ |
160 | unsigned int mips16_absolute_jump_p : 1; | |
15be625d CM |
161 | |
162 | /* True if this instruction is complete. */ | |
163 | unsigned int complete_p : 1; | |
e407c74b NC |
164 | |
165 | /* True if this instruction is cleared from history by unconditional | |
166 | branch. */ | |
167 | unsigned int cleared_p : 1; | |
47e39b9d RS |
168 | }; |
169 | ||
a325df1d TS |
170 | /* The ABI to use. */ |
171 | enum mips_abi_level | |
172 | { | |
173 | NO_ABI = 0, | |
174 | O32_ABI, | |
175 | O64_ABI, | |
176 | N32_ABI, | |
177 | N64_ABI, | |
178 | EABI_ABI | |
179 | }; | |
180 | ||
181 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 182 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 183 | |
143d77c5 EC |
184 | /* Whether or not we have code that can call pic code. */ |
185 | int mips_abicalls = FALSE; | |
186 | ||
aa6975fb ILT |
187 | /* Whether or not we have code which can be put into a shared |
188 | library. */ | |
189 | static bfd_boolean mips_in_shared = TRUE; | |
190 | ||
252b5132 RH |
191 | /* This is the set of options which may be modified by the .set |
192 | pseudo-op. We use a struct so that .set push and .set pop are more | |
193 | reliable. */ | |
194 | ||
e972090a NC |
195 | struct mips_set_options |
196 | { | |
252b5132 RH |
197 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
198 | if it has not been initialized. Changed by `.set mipsN', and the | |
199 | -mipsN command line option, and the default CPU. */ | |
200 | int isa; | |
846ef2d0 RS |
201 | /* Enabled Application Specific Extensions (ASEs). Changed by `.set |
202 | <asename>', by command line options, and based on the default | |
203 | architecture. */ | |
204 | int ase; | |
252b5132 RH |
205 | /* Whether we are assembling for the mips16 processor. 0 if we are |
206 | not, 1 if we are, and -1 if the value has not been initialized. | |
207 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
208 | -nomips16 command line options, and the default CPU. */ | |
209 | int mips16; | |
df58fc94 RS |
210 | /* Whether we are assembling for the mipsMIPS ASE. 0 if we are not, |
211 | 1 if we are, and -1 if the value has not been initialized. Changed | |
212 | by `.set micromips' and `.set nomicromips', and the -mmicromips | |
213 | and -mno-micromips command line options, and the default CPU. */ | |
214 | int micromips; | |
252b5132 RH |
215 | /* Non-zero if we should not reorder instructions. Changed by `.set |
216 | reorder' and `.set noreorder'. */ | |
217 | int noreorder; | |
741fe287 MR |
218 | /* Non-zero if we should not permit the register designated "assembler |
219 | temporary" to be used in instructions. The value is the register | |
220 | number, normally $at ($1). Changed by `.set at=REG', `.set noat' | |
221 | (same as `.set at=$0') and `.set at' (same as `.set at=$1'). */ | |
222 | unsigned int at; | |
252b5132 RH |
223 | /* Non-zero if we should warn when a macro instruction expands into |
224 | more than one machine instruction. Changed by `.set nomacro' and | |
225 | `.set macro'. */ | |
226 | int warn_about_macros; | |
227 | /* Non-zero if we should not move instructions. Changed by `.set | |
228 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
229 | int nomove; | |
230 | /* Non-zero if we should not optimize branches by moving the target | |
231 | of the branch into the delay slot. Actually, we don't perform | |
232 | this optimization anyhow. Changed by `.set bopt' and `.set | |
233 | nobopt'. */ | |
234 | int nobopt; | |
235 | /* Non-zero if we should not autoextend mips16 instructions. | |
236 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
237 | int noautoextend; | |
833794fc MR |
238 | /* True if we should only emit 32-bit microMIPS instructions. |
239 | Changed by `.set insn32' and `.set noinsn32', and the -minsn32 | |
240 | and -mno-insn32 command line options. */ | |
241 | bfd_boolean insn32; | |
a325df1d TS |
242 | /* Restrict general purpose registers and floating point registers |
243 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
244 | is passed but can changed if the assembler code uses .set mipsN. */ | |
bad1aba3 | 245 | int gp; |
0b35dfee | 246 | int fp; |
fef14a42 TS |
247 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
248 | command line option, and the default CPU. */ | |
249 | int arch; | |
aed1a261 RS |
250 | /* True if ".set sym32" is in effect. */ |
251 | bfd_boolean sym32; | |
037b32b9 AN |
252 | /* True if floating-point operations are not allowed. Changed by .set |
253 | softfloat or .set hardfloat, by command line options -msoft-float or | |
254 | -mhard-float. The default is false. */ | |
255 | bfd_boolean soft_float; | |
256 | ||
257 | /* True if only single-precision floating-point operations are allowed. | |
258 | Changed by .set singlefloat or .set doublefloat, command-line options | |
259 | -msingle-float or -mdouble-float. The default is false. */ | |
260 | bfd_boolean single_float; | |
351cdf24 MF |
261 | |
262 | /* 1 if single-precision operations on odd-numbered registers are | |
263 | allowed. */ | |
264 | int oddspreg; | |
252b5132 RH |
265 | }; |
266 | ||
919731af | 267 | /* Specifies whether module level options have been checked yet. */ |
268 | static bfd_boolean file_mips_opts_checked = FALSE; | |
269 | ||
7361da2c AB |
270 | /* Do we support nan2008? 0 if we don't, 1 if we do, and -1 if the |
271 | value has not been initialized. Changed by `.nan legacy' and | |
272 | `.nan 2008', and the -mnan=legacy and -mnan=2008 command line | |
273 | options, and the default CPU. */ | |
274 | static int mips_nan2008 = -1; | |
a325df1d | 275 | |
0b35dfee | 276 | /* This is the struct we use to hold the module level set of options. |
bad1aba3 | 277 | Note that we must set the isa field to ISA_UNKNOWN and the ASE, gp and |
0b35dfee | 278 | fp fields to -1 to indicate that they have not been initialized. */ |
037b32b9 | 279 | |
0b35dfee | 280 | static struct mips_set_options file_mips_opts = |
281 | { | |
282 | /* isa */ ISA_UNKNOWN, /* ase */ 0, /* mips16 */ -1, /* micromips */ -1, | |
283 | /* noreorder */ 0, /* at */ ATREG, /* warn_about_macros */ 0, | |
284 | /* nomove */ 0, /* nobopt */ 0, /* noautoextend */ 0, /* insn32 */ FALSE, | |
bad1aba3 | 285 | /* gp */ -1, /* fp */ -1, /* arch */ CPU_UNKNOWN, /* sym32 */ FALSE, |
351cdf24 | 286 | /* soft_float */ FALSE, /* single_float */ FALSE, /* oddspreg */ -1 |
0b35dfee | 287 | }; |
252b5132 | 288 | |
0b35dfee | 289 | /* This is similar to file_mips_opts, but for the current set of options. */ |
ba92f887 | 290 | |
e972090a NC |
291 | static struct mips_set_options mips_opts = |
292 | { | |
846ef2d0 | 293 | /* isa */ ISA_UNKNOWN, /* ase */ 0, /* mips16 */ -1, /* micromips */ -1, |
b015e599 | 294 | /* noreorder */ 0, /* at */ ATREG, /* warn_about_macros */ 0, |
833794fc | 295 | /* nomove */ 0, /* nobopt */ 0, /* noautoextend */ 0, /* insn32 */ FALSE, |
bad1aba3 | 296 | /* gp */ -1, /* fp */ -1, /* arch */ CPU_UNKNOWN, /* sym32 */ FALSE, |
351cdf24 | 297 | /* soft_float */ FALSE, /* single_float */ FALSE, /* oddspreg */ -1 |
e7af610e | 298 | }; |
252b5132 | 299 | |
846ef2d0 RS |
300 | /* Which bits of file_ase were explicitly set or cleared by ASE options. */ |
301 | static unsigned int file_ase_explicit; | |
302 | ||
252b5132 RH |
303 | /* These variables are filled in with the masks of registers used. |
304 | The object format code reads them and puts them in the appropriate | |
305 | place. */ | |
306 | unsigned long mips_gprmask; | |
307 | unsigned long mips_cprmask[4]; | |
308 | ||
738f4d98 | 309 | /* True if any MIPS16 code was produced. */ |
a4672219 TS |
310 | static int file_ase_mips16; |
311 | ||
3994f87e TS |
312 | #define ISA_SUPPORTS_MIPS16E (mips_opts.isa == ISA_MIPS32 \ |
313 | || mips_opts.isa == ISA_MIPS32R2 \ | |
ae52f483 AB |
314 | || mips_opts.isa == ISA_MIPS32R3 \ |
315 | || mips_opts.isa == ISA_MIPS32R5 \ | |
3994f87e | 316 | || mips_opts.isa == ISA_MIPS64 \ |
ae52f483 AB |
317 | || mips_opts.isa == ISA_MIPS64R2 \ |
318 | || mips_opts.isa == ISA_MIPS64R3 \ | |
319 | || mips_opts.isa == ISA_MIPS64R5) | |
3994f87e | 320 | |
df58fc94 RS |
321 | /* True if any microMIPS code was produced. */ |
322 | static int file_ase_micromips; | |
323 | ||
b12dd2e4 CF |
324 | /* True if we want to create R_MIPS_JALR for jalr $25. */ |
325 | #ifdef TE_IRIX | |
1180b5a4 | 326 | #define MIPS_JALR_HINT_P(EXPR) HAVE_NEWABI |
b12dd2e4 | 327 | #else |
1180b5a4 RS |
328 | /* As a GNU extension, we use R_MIPS_JALR for o32 too. However, |
329 | because there's no place for any addend, the only acceptable | |
330 | expression is a bare symbol. */ | |
331 | #define MIPS_JALR_HINT_P(EXPR) \ | |
332 | (!HAVE_IN_PLACE_ADDENDS \ | |
333 | || ((EXPR)->X_op == O_symbol && (EXPR)->X_add_number == 0)) | |
b12dd2e4 CF |
334 | #endif |
335 | ||
ec68c924 | 336 | /* The argument of the -march= flag. The architecture we are assembling. */ |
316f5878 | 337 | static const char *mips_arch_string; |
ec68c924 EC |
338 | |
339 | /* The argument of the -mtune= flag. The architecture for which we | |
340 | are optimizing. */ | |
341 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 342 | static const char *mips_tune_string; |
ec68c924 | 343 | |
316f5878 | 344 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
345 | static int mips_32bitmode = 0; |
346 | ||
316f5878 RS |
347 | /* True if the given ABI requires 32-bit registers. */ |
348 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
349 | ||
350 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
351 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
352 | ((ABI) == N32_ABI \ | |
353 | || (ABI) == N64_ABI \ | |
316f5878 RS |
354 | || (ABI) == O64_ABI) |
355 | ||
7361da2c AB |
356 | #define ISA_IS_R6(ISA) \ |
357 | ((ISA) == ISA_MIPS32R6 \ | |
358 | || (ISA) == ISA_MIPS64R6) | |
359 | ||
ad3fea08 | 360 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
361 | #define ISA_HAS_64BIT_REGS(ISA) \ |
362 | ((ISA) == ISA_MIPS3 \ | |
363 | || (ISA) == ISA_MIPS4 \ | |
364 | || (ISA) == ISA_MIPS5 \ | |
365 | || (ISA) == ISA_MIPS64 \ | |
ae52f483 AB |
366 | || (ISA) == ISA_MIPS64R2 \ |
367 | || (ISA) == ISA_MIPS64R3 \ | |
7361da2c AB |
368 | || (ISA) == ISA_MIPS64R5 \ |
369 | || (ISA) == ISA_MIPS64R6) | |
9ce8a5dd | 370 | |
ad3fea08 TS |
371 | /* Return true if ISA supports 64 bit wide float registers. */ |
372 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
373 | ((ISA) == ISA_MIPS3 \ | |
374 | || (ISA) == ISA_MIPS4 \ | |
375 | || (ISA) == ISA_MIPS5 \ | |
376 | || (ISA) == ISA_MIPS32R2 \ | |
ae52f483 AB |
377 | || (ISA) == ISA_MIPS32R3 \ |
378 | || (ISA) == ISA_MIPS32R5 \ | |
7361da2c | 379 | || (ISA) == ISA_MIPS32R6 \ |
ad3fea08 | 380 | || (ISA) == ISA_MIPS64 \ |
ae52f483 AB |
381 | || (ISA) == ISA_MIPS64R2 \ |
382 | || (ISA) == ISA_MIPS64R3 \ | |
7361da2c AB |
383 | || (ISA) == ISA_MIPS64R5 \ |
384 | || (ISA) == ISA_MIPS64R6) | |
ad3fea08 | 385 | |
af7ee8bf CD |
386 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
387 | instructions. */ | |
707bfff6 | 388 | #define ISA_HAS_DROR(ISA) \ |
df58fc94 | 389 | ((ISA) == ISA_MIPS64R2 \ |
ae52f483 AB |
390 | || (ISA) == ISA_MIPS64R3 \ |
391 | || (ISA) == ISA_MIPS64R5 \ | |
7361da2c | 392 | || (ISA) == ISA_MIPS64R6 \ |
df58fc94 RS |
393 | || (mips_opts.micromips \ |
394 | && ISA_HAS_64BIT_REGS (ISA)) \ | |
395 | ) | |
af7ee8bf CD |
396 | |
397 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
398 | instructions. */ | |
707bfff6 TS |
399 | #define ISA_HAS_ROR(ISA) \ |
400 | ((ISA) == ISA_MIPS32R2 \ | |
ae52f483 AB |
401 | || (ISA) == ISA_MIPS32R3 \ |
402 | || (ISA) == ISA_MIPS32R5 \ | |
7361da2c | 403 | || (ISA) == ISA_MIPS32R6 \ |
707bfff6 | 404 | || (ISA) == ISA_MIPS64R2 \ |
ae52f483 AB |
405 | || (ISA) == ISA_MIPS64R3 \ |
406 | || (ISA) == ISA_MIPS64R5 \ | |
7361da2c | 407 | || (ISA) == ISA_MIPS64R6 \ |
846ef2d0 | 408 | || (mips_opts.ase & ASE_SMARTMIPS) \ |
df58fc94 RS |
409 | || mips_opts.micromips \ |
410 | ) | |
707bfff6 | 411 | |
7455baf8 | 412 | /* Return true if ISA supports single-precision floats in odd registers. */ |
351cdf24 MF |
413 | #define ISA_HAS_ODD_SINGLE_FPR(ISA, CPU)\ |
414 | (((ISA) == ISA_MIPS32 \ | |
415 | || (ISA) == ISA_MIPS32R2 \ | |
416 | || (ISA) == ISA_MIPS32R3 \ | |
417 | || (ISA) == ISA_MIPS32R5 \ | |
7361da2c | 418 | || (ISA) == ISA_MIPS32R6 \ |
351cdf24 MF |
419 | || (ISA) == ISA_MIPS64 \ |
420 | || (ISA) == ISA_MIPS64R2 \ | |
421 | || (ISA) == ISA_MIPS64R3 \ | |
422 | || (ISA) == ISA_MIPS64R5 \ | |
7361da2c | 423 | || (ISA) == ISA_MIPS64R6 \ |
351cdf24 MF |
424 | || (CPU) == CPU_R5900) \ |
425 | && (CPU) != CPU_LOONGSON_3A) | |
af7ee8bf | 426 | |
ad3fea08 TS |
427 | /* Return true if ISA supports move to/from high part of a 64-bit |
428 | floating-point register. */ | |
429 | #define ISA_HAS_MXHC1(ISA) \ | |
430 | ((ISA) == ISA_MIPS32R2 \ | |
ae52f483 AB |
431 | || (ISA) == ISA_MIPS32R3 \ |
432 | || (ISA) == ISA_MIPS32R5 \ | |
7361da2c AB |
433 | || (ISA) == ISA_MIPS32R6 \ |
434 | || (ISA) == ISA_MIPS64R2 \ | |
435 | || (ISA) == ISA_MIPS64R3 \ | |
436 | || (ISA) == ISA_MIPS64R5 \ | |
437 | || (ISA) == ISA_MIPS64R6) | |
438 | ||
439 | /* Return true if ISA supports legacy NAN. */ | |
440 | #define ISA_HAS_LEGACY_NAN(ISA) \ | |
441 | ((ISA) == ISA_MIPS1 \ | |
442 | || (ISA) == ISA_MIPS2 \ | |
443 | || (ISA) == ISA_MIPS3 \ | |
444 | || (ISA) == ISA_MIPS4 \ | |
445 | || (ISA) == ISA_MIPS5 \ | |
446 | || (ISA) == ISA_MIPS32 \ | |
447 | || (ISA) == ISA_MIPS32R2 \ | |
448 | || (ISA) == ISA_MIPS32R3 \ | |
449 | || (ISA) == ISA_MIPS32R5 \ | |
450 | || (ISA) == ISA_MIPS64 \ | |
ae52f483 AB |
451 | || (ISA) == ISA_MIPS64R2 \ |
452 | || (ISA) == ISA_MIPS64R3 \ | |
453 | || (ISA) == ISA_MIPS64R5) | |
ad3fea08 | 454 | |
bad1aba3 | 455 | #define GPR_SIZE \ |
456 | (mips_opts.gp == 64 && !ISA_HAS_64BIT_REGS (mips_opts.isa) \ | |
457 | ? 32 \ | |
458 | : mips_opts.gp) | |
ca4e0257 | 459 | |
bad1aba3 | 460 | #define FPR_SIZE \ |
461 | (mips_opts.fp == 64 && !ISA_HAS_64BIT_FPRS (mips_opts.isa) \ | |
462 | ? 32 \ | |
463 | : mips_opts.fp) | |
ca4e0257 | 464 | |
316f5878 | 465 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 466 | |
316f5878 | 467 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 468 | |
3b91255e RS |
469 | /* True if relocations are stored in-place. */ |
470 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
471 | ||
aed1a261 RS |
472 | /* The ABI-derived address size. */ |
473 | #define HAVE_64BIT_ADDRESSES \ | |
bad1aba3 | 474 | (GPR_SIZE == 64 && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) |
aed1a261 | 475 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) |
e013f690 | 476 | |
aed1a261 RS |
477 | /* The size of symbolic constants (i.e., expressions of the form |
478 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
479 | #define HAVE_32BIT_SYMBOLS \ | |
480 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
481 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 482 | |
b7c7d6c1 TS |
483 | /* Addresses are loaded in different ways, depending on the address size |
484 | in use. The n32 ABI Documentation also mandates the use of additions | |
485 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 486 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 487 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
488 | |
489 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 490 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
491 | |
492 | #define ADDRESS_LOAD_INSN \ | |
493 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
494 | ||
495 | #define ADDRESS_STORE_INSN \ | |
496 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
497 | ||
a4672219 | 498 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
499 | #define CPU_HAS_MIPS16(cpu) \ |
500 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
501 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 502 | |
2309ddf2 | 503 | /* Return true if the given CPU supports the microMIPS ASE. */ |
df58fc94 RS |
504 | #define CPU_HAS_MICROMIPS(cpu) 0 |
505 | ||
60b63b72 RS |
506 | /* True if CPU has a dror instruction. */ |
507 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
508 | ||
509 | /* True if CPU has a ror instruction. */ | |
510 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
511 | ||
dd6a37e7 | 512 | /* True if CPU is in the Octeon family */ |
2c629856 N |
513 | #define CPU_IS_OCTEON(CPU) ((CPU) == CPU_OCTEON || (CPU) == CPU_OCTEONP \ |
514 | || (CPU) == CPU_OCTEON2 || (CPU) == CPU_OCTEON3) | |
dd6a37e7 | 515 | |
dd3cbb7e | 516 | /* True if CPU has seq/sne and seqi/snei instructions. */ |
dd6a37e7 | 517 | #define CPU_HAS_SEQ(CPU) (CPU_IS_OCTEON (CPU)) |
dd3cbb7e | 518 | |
0aa27725 RS |
519 | /* True, if CPU has support for ldc1 and sdc1. */ |
520 | #define CPU_HAS_LDC1_SDC1(CPU) \ | |
521 | ((mips_opts.isa != ISA_MIPS1) && ((CPU) != CPU_R5900)) | |
522 | ||
c8978940 CD |
523 | /* True if mflo and mfhi can be immediately followed by instructions |
524 | which write to the HI and LO registers. | |
525 | ||
526 | According to MIPS specifications, MIPS ISAs I, II, and III need | |
527 | (at least) two instructions between the reads of HI/LO and | |
528 | instructions which write them, and later ISAs do not. Contradicting | |
529 | the MIPS specifications, some MIPS IV processor user manuals (e.g. | |
530 | the UM for the NEC Vr5000) document needing the instructions between | |
531 | HI/LO reads and writes, as well. Therefore, we declare only MIPS32, | |
532 | MIPS64 and later ISAs to have the interlocks, plus any specific | |
533 | earlier-ISA CPUs for which CPU documentation declares that the | |
534 | instructions are really interlocked. */ | |
535 | #define hilo_interlocks \ | |
536 | (mips_opts.isa == ISA_MIPS32 \ | |
537 | || mips_opts.isa == ISA_MIPS32R2 \ | |
ae52f483 AB |
538 | || mips_opts.isa == ISA_MIPS32R3 \ |
539 | || mips_opts.isa == ISA_MIPS32R5 \ | |
7361da2c | 540 | || mips_opts.isa == ISA_MIPS32R6 \ |
c8978940 CD |
541 | || mips_opts.isa == ISA_MIPS64 \ |
542 | || mips_opts.isa == ISA_MIPS64R2 \ | |
ae52f483 AB |
543 | || mips_opts.isa == ISA_MIPS64R3 \ |
544 | || mips_opts.isa == ISA_MIPS64R5 \ | |
7361da2c | 545 | || mips_opts.isa == ISA_MIPS64R6 \ |
c8978940 | 546 | || mips_opts.arch == CPU_R4010 \ |
e407c74b | 547 | || mips_opts.arch == CPU_R5900 \ |
c8978940 CD |
548 | || mips_opts.arch == CPU_R10000 \ |
549 | || mips_opts.arch == CPU_R12000 \ | |
3aa3176b TS |
550 | || mips_opts.arch == CPU_R14000 \ |
551 | || mips_opts.arch == CPU_R16000 \ | |
c8978940 | 552 | || mips_opts.arch == CPU_RM7000 \ |
c8978940 | 553 | || mips_opts.arch == CPU_VR5500 \ |
df58fc94 | 554 | || mips_opts.micromips \ |
c8978940 | 555 | ) |
252b5132 RH |
556 | |
557 | /* Whether the processor uses hardware interlocks to protect reads | |
81912461 ILT |
558 | from the GPRs after they are loaded from memory, and thus does not |
559 | require nops to be inserted. This applies to instructions marked | |
67dc82bc | 560 | INSN_LOAD_MEMORY. These nops are only required at MIPS ISA |
df58fc94 RS |
561 | level I and microMIPS mode instructions are always interlocked. */ |
562 | #define gpr_interlocks \ | |
563 | (mips_opts.isa != ISA_MIPS1 \ | |
564 | || mips_opts.arch == CPU_R3900 \ | |
e407c74b | 565 | || mips_opts.arch == CPU_R5900 \ |
df58fc94 RS |
566 | || mips_opts.micromips \ |
567 | ) | |
252b5132 | 568 | |
81912461 ILT |
569 | /* Whether the processor uses hardware interlocks to avoid delays |
570 | required by coprocessor instructions, and thus does not require | |
571 | nops to be inserted. This applies to instructions marked | |
43885403 MF |
572 | INSN_LOAD_COPROC, INSN_COPROC_MOVE, and to delays between |
573 | instructions marked INSN_WRITE_COND_CODE and ones marked | |
81912461 | 574 | INSN_READ_COND_CODE. These nops are only required at MIPS ISA |
df58fc94 RS |
575 | levels I, II, and III and microMIPS mode instructions are always |
576 | interlocked. */ | |
bdaaa2e1 | 577 | /* Itbl support may require additional care here. */ |
81912461 ILT |
578 | #define cop_interlocks \ |
579 | ((mips_opts.isa != ISA_MIPS1 \ | |
580 | && mips_opts.isa != ISA_MIPS2 \ | |
581 | && mips_opts.isa != ISA_MIPS3) \ | |
582 | || mips_opts.arch == CPU_R4300 \ | |
df58fc94 | 583 | || mips_opts.micromips \ |
81912461 ILT |
584 | ) |
585 | ||
586 | /* Whether the processor uses hardware interlocks to protect reads | |
587 | from coprocessor registers after they are loaded from memory, and | |
588 | thus does not require nops to be inserted. This applies to | |
589 | instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only | |
df58fc94 RS |
590 | requires at MIPS ISA level I and microMIPS mode instructions are |
591 | always interlocked. */ | |
592 | #define cop_mem_interlocks \ | |
593 | (mips_opts.isa != ISA_MIPS1 \ | |
594 | || mips_opts.micromips \ | |
595 | ) | |
252b5132 | 596 | |
6b76fefe CM |
597 | /* Is this a mfhi or mflo instruction? */ |
598 | #define MF_HILO_INSN(PINFO) \ | |
b19e8a9b AN |
599 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) |
600 | ||
df58fc94 RS |
601 | /* Whether code compression (either of the MIPS16 or the microMIPS ASEs) |
602 | has been selected. This implies, in particular, that addresses of text | |
603 | labels have their LSB set. */ | |
604 | #define HAVE_CODE_COMPRESSION \ | |
605 | ((mips_opts.mips16 | mips_opts.micromips) != 0) | |
606 | ||
42429eac | 607 | /* The minimum and maximum signed values that can be stored in a GPR. */ |
bad1aba3 | 608 | #define GPR_SMAX ((offsetT) (((valueT) 1 << (GPR_SIZE - 1)) - 1)) |
42429eac RS |
609 | #define GPR_SMIN (-GPR_SMAX - 1) |
610 | ||
252b5132 RH |
611 | /* MIPS PIC level. */ |
612 | ||
a161fe53 | 613 | enum mips_pic_level mips_pic; |
252b5132 | 614 | |
c9914766 | 615 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 616 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 617 | static int mips_big_got = 0; |
252b5132 RH |
618 | |
619 | /* 1 if trap instructions should used for overflow rather than break | |
620 | instructions. */ | |
c9914766 | 621 | static int mips_trap = 0; |
252b5132 | 622 | |
119d663a | 623 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 624 | by assembling two single width halves into two single width floating |
119d663a NC |
625 | point registers which just happen to alias the double width destination |
626 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 627 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
628 | automatically at assemble time. */ |
629 | static int mips_disable_float_construction; | |
630 | ||
252b5132 RH |
631 | /* Non-zero if any .set noreorder directives were used. */ |
632 | ||
633 | static int mips_any_noreorder; | |
634 | ||
6b76fefe CM |
635 | /* Non-zero if nops should be inserted when the register referenced in |
636 | an mfhi/mflo instruction is read in the next two instructions. */ | |
637 | static int mips_7000_hilo_fix; | |
638 | ||
02ffd3e4 | 639 | /* The size of objects in the small data section. */ |
156c2f8b | 640 | static unsigned int g_switch_value = 8; |
252b5132 RH |
641 | /* Whether the -G option was used. */ |
642 | static int g_switch_seen = 0; | |
643 | ||
644 | #define N_RMASK 0xc4 | |
645 | #define N_VFP 0xd4 | |
646 | ||
647 | /* If we can determine in advance that GP optimization won't be | |
648 | possible, we can skip the relaxation stuff that tries to produce | |
649 | GP-relative references. This makes delay slot optimization work | |
650 | better. | |
651 | ||
652 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
653 | gcc output. It needs to guess right for gcc, otherwise gcc |
654 | will put what it thinks is a GP-relative instruction in a branch | |
655 | delay slot. | |
252b5132 RH |
656 | |
657 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
658 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 659 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
660 | |
661 | /* handle of the OPCODE hash table */ | |
662 | static struct hash_control *op_hash = NULL; | |
663 | ||
664 | /* The opcode hash table we use for the mips16. */ | |
665 | static struct hash_control *mips16_op_hash = NULL; | |
666 | ||
df58fc94 RS |
667 | /* The opcode hash table we use for the microMIPS ASE. */ |
668 | static struct hash_control *micromips_op_hash = NULL; | |
669 | ||
252b5132 RH |
670 | /* This array holds the chars that always start a comment. If the |
671 | pre-processor is disabled, these aren't very useful */ | |
672 | const char comment_chars[] = "#"; | |
673 | ||
674 | /* This array holds the chars that only start a comment at the beginning of | |
675 | a line. If the line seems to have the form '# 123 filename' | |
676 | .line and .file directives will appear in the pre-processed output */ | |
677 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
678 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 679 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
680 | /* Also note that C style comments are always supported. */ |
681 | const char line_comment_chars[] = "#"; | |
682 | ||
bdaaa2e1 | 683 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 684 | const char line_separator_chars[] = ";"; |
252b5132 RH |
685 | |
686 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
687 | const char EXP_CHARS[] = "eE"; | |
688 | ||
689 | /* Chars that mean this number is a floating point constant */ | |
690 | /* As in 0f12.456 */ | |
691 | /* or 0d1.2345e12 */ | |
692 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
693 | ||
694 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
695 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
696 | but nothing is ideal around here. | |
697 | */ | |
698 | ||
e3de51ce RS |
699 | /* Types of printf format used for instruction-related error messages. |
700 | "I" means int ("%d") and "S" means string ("%s"). */ | |
701 | enum mips_insn_error_format { | |
702 | ERR_FMT_PLAIN, | |
703 | ERR_FMT_I, | |
704 | ERR_FMT_SS, | |
705 | }; | |
706 | ||
707 | /* Information about an error that was found while assembling the current | |
708 | instruction. */ | |
709 | struct mips_insn_error { | |
710 | /* We sometimes need to match an instruction against more than one | |
711 | opcode table entry. Errors found during this matching are reported | |
712 | against a particular syntactic argument rather than against the | |
713 | instruction as a whole. We grade these messages so that errors | |
714 | against argument N have a greater priority than an error against | |
715 | any argument < N, since the former implies that arguments up to N | |
716 | were acceptable and that the opcode entry was therefore a closer match. | |
717 | If several matches report an error against the same argument, | |
718 | we only use that error if it is the same in all cases. | |
719 | ||
720 | min_argnum is the minimum argument number for which an error message | |
721 | should be accepted. It is 0 if MSG is against the instruction as | |
722 | a whole. */ | |
723 | int min_argnum; | |
724 | ||
725 | /* The printf()-style message, including its format and arguments. */ | |
726 | enum mips_insn_error_format format; | |
727 | const char *msg; | |
728 | union { | |
729 | int i; | |
730 | const char *ss[2]; | |
731 | } u; | |
732 | }; | |
733 | ||
734 | /* The error that should be reported for the current instruction. */ | |
735 | static struct mips_insn_error insn_error; | |
252b5132 RH |
736 | |
737 | static int auto_align = 1; | |
738 | ||
739 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
740 | offset in the stack frame from which to restore the $gp register. | |
741 | This is set by the .cprestore pseudo-op, and saved in this | |
742 | variable. */ | |
743 | static offsetT mips_cprestore_offset = -1; | |
744 | ||
67c1ffbe | 745 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 746 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 747 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
748 | static offsetT mips_cpreturn_offset = -1; |
749 | static int mips_cpreturn_register = -1; | |
750 | static int mips_gp_register = GP; | |
def2e0dd | 751 | static int mips_gprel_offset = 0; |
6478892d | 752 | |
7a621144 DJ |
753 | /* Whether mips_cprestore_offset has been set in the current function |
754 | (or whether it has already been warned about, if not). */ | |
755 | static int mips_cprestore_valid = 0; | |
756 | ||
252b5132 RH |
757 | /* This is the register which holds the stack frame, as set by the |
758 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
759 | static int mips_frame_reg = SP; | |
760 | ||
7a621144 DJ |
761 | /* Whether mips_frame_reg has been set in the current function |
762 | (or whether it has already been warned about, if not). */ | |
763 | static int mips_frame_reg_valid = 0; | |
764 | ||
252b5132 RH |
765 | /* To output NOP instructions correctly, we need to keep information |
766 | about the previous two instructions. */ | |
767 | ||
768 | /* Whether we are optimizing. The default value of 2 means to remove | |
769 | unneeded NOPs and swap branch instructions when possible. A value | |
770 | of 1 means to not swap branches. A value of 0 means to always | |
771 | insert NOPs. */ | |
772 | static int mips_optimize = 2; | |
773 | ||
774 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
775 | equivalent to seeing no -g option at all. */ | |
776 | static int mips_debug = 0; | |
777 | ||
7d8e00cf RS |
778 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
779 | #define MAX_VR4130_NOPS 4 | |
780 | ||
781 | /* The maximum number of NOPs needed to fill delay slots. */ | |
782 | #define MAX_DELAY_NOPS 2 | |
783 | ||
784 | /* The maximum number of NOPs needed for any purpose. */ | |
785 | #define MAX_NOPS 4 | |
71400594 RS |
786 | |
787 | /* A list of previous instructions, with index 0 being the most recent. | |
788 | We need to look back MAX_NOPS instructions when filling delay slots | |
789 | or working around processor errata. We need to look back one | |
790 | instruction further if we're thinking about using history[0] to | |
791 | fill a branch delay slot. */ | |
792 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 793 | |
fc76e730 | 794 | /* Arrays of operands for each instruction. */ |
14daeee3 | 795 | #define MAX_OPERANDS 6 |
fc76e730 RS |
796 | struct mips_operand_array { |
797 | const struct mips_operand *operand[MAX_OPERANDS]; | |
798 | }; | |
799 | static struct mips_operand_array *mips_operands; | |
800 | static struct mips_operand_array *mips16_operands; | |
801 | static struct mips_operand_array *micromips_operands; | |
802 | ||
1e915849 | 803 | /* Nop instructions used by emit_nop. */ |
df58fc94 RS |
804 | static struct mips_cl_insn nop_insn; |
805 | static struct mips_cl_insn mips16_nop_insn; | |
806 | static struct mips_cl_insn micromips_nop16_insn; | |
807 | static struct mips_cl_insn micromips_nop32_insn; | |
1e915849 RS |
808 | |
809 | /* The appropriate nop for the current mode. */ | |
833794fc MR |
810 | #define NOP_INSN (mips_opts.mips16 \ |
811 | ? &mips16_nop_insn \ | |
812 | : (mips_opts.micromips \ | |
813 | ? (mips_opts.insn32 \ | |
814 | ? µmips_nop32_insn \ | |
815 | : µmips_nop16_insn) \ | |
816 | : &nop_insn)) | |
df58fc94 RS |
817 | |
818 | /* The size of NOP_INSN in bytes. */ | |
833794fc MR |
819 | #define NOP_INSN_SIZE ((mips_opts.mips16 \ |
820 | || (mips_opts.micromips && !mips_opts.insn32)) \ | |
821 | ? 2 : 4) | |
252b5132 | 822 | |
252b5132 RH |
823 | /* If this is set, it points to a frag holding nop instructions which |
824 | were inserted before the start of a noreorder section. If those | |
825 | nops turn out to be unnecessary, the size of the frag can be | |
826 | decreased. */ | |
827 | static fragS *prev_nop_frag; | |
828 | ||
829 | /* The number of nop instructions we created in prev_nop_frag. */ | |
830 | static int prev_nop_frag_holds; | |
831 | ||
832 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 833 | prev_nop_frag. */ |
252b5132 RH |
834 | static int prev_nop_frag_required; |
835 | ||
836 | /* The number of instructions we've seen since prev_nop_frag. */ | |
837 | static int prev_nop_frag_since; | |
838 | ||
e8044f35 RS |
839 | /* Relocations against symbols are sometimes done in two parts, with a HI |
840 | relocation and a LO relocation. Each relocation has only 16 bits of | |
841 | space to store an addend. This means that in order for the linker to | |
842 | handle carries correctly, it must be able to locate both the HI and | |
843 | the LO relocation. This means that the relocations must appear in | |
844 | order in the relocation table. | |
252b5132 RH |
845 | |
846 | In order to implement this, we keep track of each unmatched HI | |
847 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 848 | corresponding LO relocation. */ |
252b5132 | 849 | |
e972090a NC |
850 | struct mips_hi_fixup |
851 | { | |
252b5132 RH |
852 | /* Next HI fixup. */ |
853 | struct mips_hi_fixup *next; | |
854 | /* This fixup. */ | |
855 | fixS *fixp; | |
856 | /* The section this fixup is in. */ | |
857 | segT seg; | |
858 | }; | |
859 | ||
860 | /* The list of unmatched HI relocs. */ | |
861 | ||
862 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
863 | ||
64bdfcaf RS |
864 | /* The frag containing the last explicit relocation operator. |
865 | Null if explicit relocations have not been used. */ | |
866 | ||
867 | static fragS *prev_reloc_op_frag; | |
868 | ||
252b5132 RH |
869 | /* Map mips16 register numbers to normal MIPS register numbers. */ |
870 | ||
e972090a NC |
871 | static const unsigned int mips16_to_32_reg_map[] = |
872 | { | |
252b5132 RH |
873 | 16, 17, 2, 3, 4, 5, 6, 7 |
874 | }; | |
60b63b72 | 875 | |
df58fc94 RS |
876 | /* Map microMIPS register numbers to normal MIPS register numbers. */ |
877 | ||
df58fc94 | 878 | #define micromips_to_32_reg_d_map mips16_to_32_reg_map |
df58fc94 RS |
879 | |
880 | /* The microMIPS registers with type h. */ | |
e76ff5ab | 881 | static const unsigned int micromips_to_32_reg_h_map1[] = |
df58fc94 RS |
882 | { |
883 | 5, 5, 6, 4, 4, 4, 4, 4 | |
884 | }; | |
e76ff5ab | 885 | static const unsigned int micromips_to_32_reg_h_map2[] = |
df58fc94 RS |
886 | { |
887 | 6, 7, 7, 21, 22, 5, 6, 7 | |
888 | }; | |
889 | ||
df58fc94 RS |
890 | /* The microMIPS registers with type m. */ |
891 | static const unsigned int micromips_to_32_reg_m_map[] = | |
892 | { | |
893 | 0, 17, 2, 3, 16, 18, 19, 20 | |
894 | }; | |
895 | ||
896 | #define micromips_to_32_reg_n_map micromips_to_32_reg_m_map | |
897 | ||
71400594 RS |
898 | /* Classifies the kind of instructions we're interested in when |
899 | implementing -mfix-vr4120. */ | |
c67a084a NC |
900 | enum fix_vr4120_class |
901 | { | |
71400594 RS |
902 | FIX_VR4120_MACC, |
903 | FIX_VR4120_DMACC, | |
904 | FIX_VR4120_MULT, | |
905 | FIX_VR4120_DMULT, | |
906 | FIX_VR4120_DIV, | |
907 | FIX_VR4120_MTHILO, | |
908 | NUM_FIX_VR4120_CLASSES | |
909 | }; | |
910 | ||
c67a084a NC |
911 | /* ...likewise -mfix-loongson2f-jump. */ |
912 | static bfd_boolean mips_fix_loongson2f_jump; | |
913 | ||
914 | /* ...likewise -mfix-loongson2f-nop. */ | |
915 | static bfd_boolean mips_fix_loongson2f_nop; | |
916 | ||
917 | /* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed. */ | |
918 | static bfd_boolean mips_fix_loongson2f; | |
919 | ||
71400594 RS |
920 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if |
921 | there must be at least one other instruction between an instruction | |
922 | of type X and an instruction of type Y. */ | |
923 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
924 | ||
925 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 926 | static int mips_fix_vr4120; |
4a6a3df4 | 927 | |
7d8e00cf RS |
928 | /* ...likewise -mfix-vr4130. */ |
929 | static int mips_fix_vr4130; | |
930 | ||
6a32d874 CM |
931 | /* ...likewise -mfix-24k. */ |
932 | static int mips_fix_24k; | |
933 | ||
a8d14a88 CM |
934 | /* ...likewise -mfix-rm7000 */ |
935 | static int mips_fix_rm7000; | |
936 | ||
d954098f DD |
937 | /* ...likewise -mfix-cn63xxp1 */ |
938 | static bfd_boolean mips_fix_cn63xxp1; | |
939 | ||
4a6a3df4 AO |
940 | /* We don't relax branches by default, since this causes us to expand |
941 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
942 | fail to compute the offset before expanding the macro to the most | |
943 | efficient expansion. */ | |
944 | ||
945 | static int mips_relax_branch; | |
252b5132 | 946 | \f |
4d7206a2 RS |
947 | /* The expansion of many macros depends on the type of symbol that |
948 | they refer to. For example, when generating position-dependent code, | |
949 | a macro that refers to a symbol may have two different expansions, | |
950 | one which uses GP-relative addresses and one which uses absolute | |
951 | addresses. When generating SVR4-style PIC, a macro may have | |
952 | different expansions for local and global symbols. | |
953 | ||
954 | We handle these situations by generating both sequences and putting | |
955 | them in variant frags. In position-dependent code, the first sequence | |
956 | will be the GP-relative one and the second sequence will be the | |
957 | absolute one. In SVR4 PIC, the first sequence will be for global | |
958 | symbols and the second will be for local symbols. | |
959 | ||
584892a6 RS |
960 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
961 | SECOND are the lengths of the two sequences in bytes. These fields | |
962 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
963 | the subtype has the following flags: | |
4d7206a2 | 964 | |
584892a6 RS |
965 | RELAX_USE_SECOND |
966 | Set if it has been decided that we should use the second | |
967 | sequence instead of the first. | |
968 | ||
969 | RELAX_SECOND_LONGER | |
970 | Set in the first variant frag if the macro's second implementation | |
971 | is longer than its first. This refers to the macro as a whole, | |
972 | not an individual relaxation. | |
973 | ||
974 | RELAX_NOMACRO | |
975 | Set in the first variant frag if the macro appeared in a .set nomacro | |
976 | block and if one alternative requires a warning but the other does not. | |
977 | ||
978 | RELAX_DELAY_SLOT | |
979 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
980 | delay slot. | |
4d7206a2 | 981 | |
df58fc94 RS |
982 | RELAX_DELAY_SLOT_16BIT |
983 | Like RELAX_DELAY_SLOT, but indicates that the delay slot requires a | |
984 | 16-bit instruction. | |
985 | ||
986 | RELAX_DELAY_SLOT_SIZE_FIRST | |
987 | Like RELAX_DELAY_SLOT, but indicates that the first implementation of | |
988 | the macro is of the wrong size for the branch delay slot. | |
989 | ||
990 | RELAX_DELAY_SLOT_SIZE_SECOND | |
991 | Like RELAX_DELAY_SLOT, but indicates that the second implementation of | |
992 | the macro is of the wrong size for the branch delay slot. | |
993 | ||
4d7206a2 RS |
994 | The frag's "opcode" points to the first fixup for relaxable code. |
995 | ||
996 | Relaxable macros are generated using a sequence such as: | |
997 | ||
998 | relax_start (SYMBOL); | |
999 | ... generate first expansion ... | |
1000 | relax_switch (); | |
1001 | ... generate second expansion ... | |
1002 | relax_end (); | |
1003 | ||
1004 | The code and fixups for the unwanted alternative are discarded | |
1005 | by md_convert_frag. */ | |
584892a6 | 1006 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 1007 | |
584892a6 RS |
1008 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
1009 | #define RELAX_SECOND(X) ((X) & 0xff) | |
1010 | #define RELAX_USE_SECOND 0x10000 | |
1011 | #define RELAX_SECOND_LONGER 0x20000 | |
1012 | #define RELAX_NOMACRO 0x40000 | |
1013 | #define RELAX_DELAY_SLOT 0x80000 | |
df58fc94 RS |
1014 | #define RELAX_DELAY_SLOT_16BIT 0x100000 |
1015 | #define RELAX_DELAY_SLOT_SIZE_FIRST 0x200000 | |
1016 | #define RELAX_DELAY_SLOT_SIZE_SECOND 0x400000 | |
252b5132 | 1017 | |
4a6a3df4 AO |
1018 | /* Branch without likely bit. If label is out of range, we turn: |
1019 | ||
1020 | beq reg1, reg2, label | |
1021 | delay slot | |
1022 | ||
1023 | into | |
1024 | ||
1025 | bne reg1, reg2, 0f | |
1026 | nop | |
1027 | j label | |
1028 | 0: delay slot | |
1029 | ||
1030 | with the following opcode replacements: | |
1031 | ||
1032 | beq <-> bne | |
1033 | blez <-> bgtz | |
1034 | bltz <-> bgez | |
1035 | bc1f <-> bc1t | |
1036 | ||
1037 | bltzal <-> bgezal (with jal label instead of j label) | |
1038 | ||
1039 | Even though keeping the delay slot instruction in the delay slot of | |
1040 | the branch would be more efficient, it would be very tricky to do | |
1041 | correctly, because we'd have to introduce a variable frag *after* | |
1042 | the delay slot instruction, and expand that instead. Let's do it | |
1043 | the easy way for now, even if the branch-not-taken case now costs | |
1044 | one additional instruction. Out-of-range branches are not supposed | |
1045 | to be common, anyway. | |
1046 | ||
1047 | Branch likely. If label is out of range, we turn: | |
1048 | ||
1049 | beql reg1, reg2, label | |
1050 | delay slot (annulled if branch not taken) | |
1051 | ||
1052 | into | |
1053 | ||
1054 | beql reg1, reg2, 1f | |
1055 | nop | |
1056 | beql $0, $0, 2f | |
1057 | nop | |
1058 | 1: j[al] label | |
1059 | delay slot (executed only if branch taken) | |
1060 | 2: | |
1061 | ||
1062 | It would be possible to generate a shorter sequence by losing the | |
1063 | likely bit, generating something like: | |
b34976b6 | 1064 | |
4a6a3df4 AO |
1065 | bne reg1, reg2, 0f |
1066 | nop | |
1067 | j[al] label | |
1068 | delay slot (executed only if branch taken) | |
1069 | 0: | |
1070 | ||
1071 | beql -> bne | |
1072 | bnel -> beq | |
1073 | blezl -> bgtz | |
1074 | bgtzl -> blez | |
1075 | bltzl -> bgez | |
1076 | bgezl -> bltz | |
1077 | bc1fl -> bc1t | |
1078 | bc1tl -> bc1f | |
1079 | ||
1080 | bltzall -> bgezal (with jal label instead of j label) | |
1081 | bgezall -> bltzal (ditto) | |
1082 | ||
1083 | ||
1084 | but it's not clear that it would actually improve performance. */ | |
66b3e8da MR |
1085 | #define RELAX_BRANCH_ENCODE(at, uncond, likely, link, toofar) \ |
1086 | ((relax_substateT) \ | |
1087 | (0xc0000000 \ | |
1088 | | ((at) & 0x1f) \ | |
1089 | | ((toofar) ? 0x20 : 0) \ | |
1090 | | ((link) ? 0x40 : 0) \ | |
1091 | | ((likely) ? 0x80 : 0) \ | |
1092 | | ((uncond) ? 0x100 : 0))) | |
4a6a3df4 | 1093 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
66b3e8da MR |
1094 | #define RELAX_BRANCH_UNCOND(i) (((i) & 0x100) != 0) |
1095 | #define RELAX_BRANCH_LIKELY(i) (((i) & 0x80) != 0) | |
1096 | #define RELAX_BRANCH_LINK(i) (((i) & 0x40) != 0) | |
1097 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 0x20) != 0) | |
1098 | #define RELAX_BRANCH_AT(i) ((i) & 0x1f) | |
4a6a3df4 | 1099 | |
252b5132 RH |
1100 | /* For mips16 code, we use an entirely different form of relaxation. |
1101 | mips16 supports two versions of most instructions which take | |
1102 | immediate values: a small one which takes some small value, and a | |
1103 | larger one which takes a 16 bit value. Since branches also follow | |
1104 | this pattern, relaxing these values is required. | |
1105 | ||
1106 | We can assemble both mips16 and normal MIPS code in a single | |
1107 | object. Therefore, we need to support this type of relaxation at | |
1108 | the same time that we support the relaxation described above. We | |
1109 | use the high bit of the subtype field to distinguish these cases. | |
1110 | ||
1111 | The information we store for this type of relaxation is the | |
1112 | argument code found in the opcode file for this relocation, whether | |
1113 | the user explicitly requested a small or extended form, and whether | |
1114 | the relocation is in a jump or jal delay slot. That tells us the | |
1115 | size of the value, and how it should be stored. We also store | |
1116 | whether the fragment is considered to be extended or not. We also | |
1117 | store whether this is known to be a branch to a different section, | |
1118 | whether we have tried to relax this frag yet, and whether we have | |
1119 | ever extended a PC relative fragment because of a shift count. */ | |
1120 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
1121 | (0x80000000 \ | |
1122 | | ((type) & 0xff) \ | |
1123 | | ((small) ? 0x100 : 0) \ | |
1124 | | ((ext) ? 0x200 : 0) \ | |
1125 | | ((dslot) ? 0x400 : 0) \ | |
1126 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 1127 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
1128 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
1129 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
1130 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
1131 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
1132 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
1133 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
1134 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
1135 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
1136 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
1137 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
1138 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 | 1139 | |
df58fc94 RS |
1140 | /* For microMIPS code, we use relaxation similar to one we use for |
1141 | MIPS16 code. Some instructions that take immediate values support | |
1142 | two encodings: a small one which takes some small value, and a | |
1143 | larger one which takes a 16 bit value. As some branches also follow | |
1144 | this pattern, relaxing these values is required. | |
1145 | ||
1146 | We can assemble both microMIPS and normal MIPS code in a single | |
1147 | object. Therefore, we need to support this type of relaxation at | |
1148 | the same time that we support the relaxation described above. We | |
1149 | use one of the high bits of the subtype field to distinguish these | |
1150 | cases. | |
1151 | ||
1152 | The information we store for this type of relaxation is the argument | |
1153 | code found in the opcode file for this relocation, the register | |
40209cad MR |
1154 | selected as the assembler temporary, whether the branch is |
1155 | unconditional, whether it is compact, whether it stores the link | |
1156 | address implicitly in $ra, whether relaxation of out-of-range 32-bit | |
1157 | branches to a sequence of instructions is enabled, and whether the | |
1158 | displacement of a branch is too large to fit as an immediate argument | |
1159 | of a 16-bit and a 32-bit branch, respectively. */ | |
1160 | #define RELAX_MICROMIPS_ENCODE(type, at, uncond, compact, link, \ | |
1161 | relax32, toofar16, toofar32) \ | |
1162 | (0x40000000 \ | |
1163 | | ((type) & 0xff) \ | |
1164 | | (((at) & 0x1f) << 8) \ | |
1165 | | ((uncond) ? 0x2000 : 0) \ | |
1166 | | ((compact) ? 0x4000 : 0) \ | |
1167 | | ((link) ? 0x8000 : 0) \ | |
1168 | | ((relax32) ? 0x10000 : 0) \ | |
1169 | | ((toofar16) ? 0x20000 : 0) \ | |
1170 | | ((toofar32) ? 0x40000 : 0)) | |
df58fc94 RS |
1171 | #define RELAX_MICROMIPS_P(i) (((i) & 0xc0000000) == 0x40000000) |
1172 | #define RELAX_MICROMIPS_TYPE(i) ((i) & 0xff) | |
1173 | #define RELAX_MICROMIPS_AT(i) (((i) >> 8) & 0x1f) | |
40209cad MR |
1174 | #define RELAX_MICROMIPS_UNCOND(i) (((i) & 0x2000) != 0) |
1175 | #define RELAX_MICROMIPS_COMPACT(i) (((i) & 0x4000) != 0) | |
1176 | #define RELAX_MICROMIPS_LINK(i) (((i) & 0x8000) != 0) | |
1177 | #define RELAX_MICROMIPS_RELAX32(i) (((i) & 0x10000) != 0) | |
1178 | ||
1179 | #define RELAX_MICROMIPS_TOOFAR16(i) (((i) & 0x20000) != 0) | |
1180 | #define RELAX_MICROMIPS_MARK_TOOFAR16(i) ((i) | 0x20000) | |
1181 | #define RELAX_MICROMIPS_CLEAR_TOOFAR16(i) ((i) & ~0x20000) | |
1182 | #define RELAX_MICROMIPS_TOOFAR32(i) (((i) & 0x40000) != 0) | |
1183 | #define RELAX_MICROMIPS_MARK_TOOFAR32(i) ((i) | 0x40000) | |
1184 | #define RELAX_MICROMIPS_CLEAR_TOOFAR32(i) ((i) & ~0x40000) | |
df58fc94 | 1185 | |
43c0598f RS |
1186 | /* Sign-extend 16-bit value X. */ |
1187 | #define SEXT_16BIT(X) ((((X) + 0x8000) & 0xffff) - 0x8000) | |
1188 | ||
885add95 CD |
1189 | /* Is the given value a sign-extended 32-bit value? */ |
1190 | #define IS_SEXT_32BIT_NUM(x) \ | |
1191 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
1192 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
1193 | ||
1194 | /* Is the given value a sign-extended 16-bit value? */ | |
1195 | #define IS_SEXT_16BIT_NUM(x) \ | |
1196 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
1197 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
1198 | ||
df58fc94 RS |
1199 | /* Is the given value a sign-extended 12-bit value? */ |
1200 | #define IS_SEXT_12BIT_NUM(x) \ | |
1201 | (((((x) & 0xfff) ^ 0x800LL) - 0x800LL) == (x)) | |
1202 | ||
7f3c4072 CM |
1203 | /* Is the given value a sign-extended 9-bit value? */ |
1204 | #define IS_SEXT_9BIT_NUM(x) \ | |
1205 | (((((x) & 0x1ff) ^ 0x100LL) - 0x100LL) == (x)) | |
1206 | ||
2051e8c4 MR |
1207 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
1208 | #define IS_ZEXT_32BIT_NUM(x) \ | |
1209 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
1210 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
1211 | ||
bf12938e RS |
1212 | /* Extract bits MASK << SHIFT from STRUCT and shift them right |
1213 | SHIFT places. */ | |
1214 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
1215 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
1216 | ||
bf12938e | 1217 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ |
df58fc94 RS |
1218 | #define EXTRACT_OPERAND(MICROMIPS, FIELD, INSN) \ |
1219 | (!(MICROMIPS) \ | |
1220 | ? EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) \ | |
1221 | : EXTRACT_BITS ((INSN).insn_opcode, \ | |
1222 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD)) | |
bf12938e RS |
1223 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ |
1224 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
1225 | MIPS16OP_MASK_##FIELD, \ | |
1226 | MIPS16OP_SH_##FIELD) | |
5c04167a RS |
1227 | |
1228 | /* The MIPS16 EXTEND opcode, shifted left 16 places. */ | |
1229 | #define MIPS16_EXTEND (0xf000U << 16) | |
4d7206a2 | 1230 | \f |
df58fc94 RS |
1231 | /* Whether or not we are emitting a branch-likely macro. */ |
1232 | static bfd_boolean emit_branch_likely_macro = FALSE; | |
1233 | ||
4d7206a2 RS |
1234 | /* Global variables used when generating relaxable macros. See the |
1235 | comment above RELAX_ENCODE for more details about how relaxation | |
1236 | is used. */ | |
1237 | static struct { | |
1238 | /* 0 if we're not emitting a relaxable macro. | |
1239 | 1 if we're emitting the first of the two relaxation alternatives. | |
1240 | 2 if we're emitting the second alternative. */ | |
1241 | int sequence; | |
1242 | ||
1243 | /* The first relaxable fixup in the current frag. (In other words, | |
1244 | the first fixup that refers to relaxable code.) */ | |
1245 | fixS *first_fixup; | |
1246 | ||
1247 | /* sizes[0] says how many bytes of the first alternative are stored in | |
1248 | the current frag. Likewise sizes[1] for the second alternative. */ | |
1249 | unsigned int sizes[2]; | |
1250 | ||
1251 | /* The symbol on which the choice of sequence depends. */ | |
1252 | symbolS *symbol; | |
1253 | } mips_relax; | |
252b5132 | 1254 | \f |
584892a6 RS |
1255 | /* Global variables used to decide whether a macro needs a warning. */ |
1256 | static struct { | |
1257 | /* True if the macro is in a branch delay slot. */ | |
1258 | bfd_boolean delay_slot_p; | |
1259 | ||
df58fc94 RS |
1260 | /* Set to the length in bytes required if the macro is in a delay slot |
1261 | that requires a specific length of instruction, otherwise zero. */ | |
1262 | unsigned int delay_slot_length; | |
1263 | ||
584892a6 RS |
1264 | /* For relaxable macros, sizes[0] is the length of the first alternative |
1265 | in bytes and sizes[1] is the length of the second alternative. | |
1266 | For non-relaxable macros, both elements give the length of the | |
1267 | macro in bytes. */ | |
1268 | unsigned int sizes[2]; | |
1269 | ||
df58fc94 RS |
1270 | /* For relaxable macros, first_insn_sizes[0] is the length of the first |
1271 | instruction of the first alternative in bytes and first_insn_sizes[1] | |
1272 | is the length of the first instruction of the second alternative. | |
1273 | For non-relaxable macros, both elements give the length of the first | |
1274 | instruction in bytes. | |
1275 | ||
1276 | Set to zero if we haven't yet seen the first instruction. */ | |
1277 | unsigned int first_insn_sizes[2]; | |
1278 | ||
1279 | /* For relaxable macros, insns[0] is the number of instructions for the | |
1280 | first alternative and insns[1] is the number of instructions for the | |
1281 | second alternative. | |
1282 | ||
1283 | For non-relaxable macros, both elements give the number of | |
1284 | instructions for the macro. */ | |
1285 | unsigned int insns[2]; | |
1286 | ||
584892a6 RS |
1287 | /* The first variant frag for this macro. */ |
1288 | fragS *first_frag; | |
1289 | } mips_macro_warning; | |
1290 | \f | |
252b5132 RH |
1291 | /* Prototypes for static functions. */ |
1292 | ||
252b5132 RH |
1293 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; |
1294 | ||
b34976b6 | 1295 | static void append_insn |
df58fc94 RS |
1296 | (struct mips_cl_insn *, expressionS *, bfd_reloc_code_real_type *, |
1297 | bfd_boolean expansionp); | |
7d10b47d | 1298 | static void mips_no_prev_insn (void); |
c67a084a | 1299 | static void macro_build (expressionS *, const char *, const char *, ...); |
b34976b6 | 1300 | static void mips16_macro_build |
03ea81db | 1301 | (expressionS *, const char *, const char *, va_list *); |
67c0d1eb | 1302 | static void load_register (int, expressionS *, int); |
584892a6 RS |
1303 | static void macro_start (void); |
1304 | static void macro_end (void); | |
833794fc | 1305 | static void macro (struct mips_cl_insn *ip, char *str); |
17a2f251 | 1306 | static void mips16_macro (struct mips_cl_insn * ip); |
17a2f251 TS |
1307 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
1308 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 1309 | static void mips16_immed |
3b4dbbbf | 1310 | (const char *, unsigned int, int, bfd_reloc_code_real_type, offsetT, |
43c0598f | 1311 | unsigned int, unsigned long *); |
5e0116d5 | 1312 | static size_t my_getSmallExpression |
17a2f251 TS |
1313 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1314 | static void my_getExpression (expressionS *, char *); | |
1315 | static void s_align (int); | |
1316 | static void s_change_sec (int); | |
1317 | static void s_change_section (int); | |
1318 | static void s_cons (int); | |
1319 | static void s_float_cons (int); | |
1320 | static void s_mips_globl (int); | |
1321 | static void s_option (int); | |
1322 | static void s_mipsset (int); | |
1323 | static void s_abicalls (int); | |
1324 | static void s_cpload (int); | |
1325 | static void s_cpsetup (int); | |
1326 | static void s_cplocal (int); | |
1327 | static void s_cprestore (int); | |
1328 | static void s_cpreturn (int); | |
741d6ea8 JM |
1329 | static void s_dtprelword (int); |
1330 | static void s_dtpreldword (int); | |
d0f13682 CLT |
1331 | static void s_tprelword (int); |
1332 | static void s_tpreldword (int); | |
17a2f251 TS |
1333 | static void s_gpvalue (int); |
1334 | static void s_gpword (int); | |
1335 | static void s_gpdword (int); | |
a3f278e2 | 1336 | static void s_ehword (int); |
17a2f251 TS |
1337 | static void s_cpadd (int); |
1338 | static void s_insn (int); | |
ba92f887 | 1339 | static void s_nan (int); |
919731af | 1340 | static void s_module (int); |
17a2f251 TS |
1341 | static void s_mips_ent (int); |
1342 | static void s_mips_end (int); | |
1343 | static void s_mips_frame (int); | |
1344 | static void s_mips_mask (int reg_type); | |
1345 | static void s_mips_stab (int); | |
1346 | static void s_mips_weakext (int); | |
1347 | static void s_mips_file (int); | |
1348 | static void s_mips_loc (int); | |
1349 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1350 | static int relaxed_branch_length (fragS *, asection *, int); |
df58fc94 RS |
1351 | static int relaxed_micromips_16bit_branch_length (fragS *, asection *, int); |
1352 | static int relaxed_micromips_32bit_branch_length (fragS *, asection *, int); | |
919731af | 1353 | static void file_mips_check_options (void); |
e7af610e NC |
1354 | |
1355 | /* Table and functions used to map between CPU/ISA names, and | |
1356 | ISA levels, and CPU numbers. */ | |
1357 | ||
e972090a NC |
1358 | struct mips_cpu_info |
1359 | { | |
e7af610e | 1360 | const char *name; /* CPU or ISA name. */ |
d16afab6 RS |
1361 | int flags; /* MIPS_CPU_* flags. */ |
1362 | int ase; /* Set of ASEs implemented by the CPU. */ | |
e7af610e NC |
1363 | int isa; /* ISA level. */ |
1364 | int cpu; /* CPU number (default CPU if ISA). */ | |
1365 | }; | |
1366 | ||
ad3fea08 | 1367 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
ad3fea08 | 1368 | |
17a2f251 TS |
1369 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1370 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1371 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 | 1372 | \f |
c31f3936 RS |
1373 | /* Command-line options. */ |
1374 | const char *md_shortopts = "O::g::G:"; | |
1375 | ||
1376 | enum options | |
1377 | { | |
1378 | OPTION_MARCH = OPTION_MD_BASE, | |
1379 | OPTION_MTUNE, | |
1380 | OPTION_MIPS1, | |
1381 | OPTION_MIPS2, | |
1382 | OPTION_MIPS3, | |
1383 | OPTION_MIPS4, | |
1384 | OPTION_MIPS5, | |
1385 | OPTION_MIPS32, | |
1386 | OPTION_MIPS64, | |
1387 | OPTION_MIPS32R2, | |
ae52f483 AB |
1388 | OPTION_MIPS32R3, |
1389 | OPTION_MIPS32R5, | |
7361da2c | 1390 | OPTION_MIPS32R6, |
c31f3936 | 1391 | OPTION_MIPS64R2, |
ae52f483 AB |
1392 | OPTION_MIPS64R3, |
1393 | OPTION_MIPS64R5, | |
7361da2c | 1394 | OPTION_MIPS64R6, |
c31f3936 RS |
1395 | OPTION_MIPS16, |
1396 | OPTION_NO_MIPS16, | |
1397 | OPTION_MIPS3D, | |
1398 | OPTION_NO_MIPS3D, | |
1399 | OPTION_MDMX, | |
1400 | OPTION_NO_MDMX, | |
1401 | OPTION_DSP, | |
1402 | OPTION_NO_DSP, | |
1403 | OPTION_MT, | |
1404 | OPTION_NO_MT, | |
1405 | OPTION_VIRT, | |
1406 | OPTION_NO_VIRT, | |
56d438b1 CF |
1407 | OPTION_MSA, |
1408 | OPTION_NO_MSA, | |
c31f3936 RS |
1409 | OPTION_SMARTMIPS, |
1410 | OPTION_NO_SMARTMIPS, | |
1411 | OPTION_DSPR2, | |
1412 | OPTION_NO_DSPR2, | |
8f4f9071 MF |
1413 | OPTION_DSPR3, |
1414 | OPTION_NO_DSPR3, | |
c31f3936 RS |
1415 | OPTION_EVA, |
1416 | OPTION_NO_EVA, | |
7d64c587 AB |
1417 | OPTION_XPA, |
1418 | OPTION_NO_XPA, | |
c31f3936 RS |
1419 | OPTION_MICROMIPS, |
1420 | OPTION_NO_MICROMIPS, | |
1421 | OPTION_MCU, | |
1422 | OPTION_NO_MCU, | |
1423 | OPTION_COMPAT_ARCH_BASE, | |
1424 | OPTION_M4650, | |
1425 | OPTION_NO_M4650, | |
1426 | OPTION_M4010, | |
1427 | OPTION_NO_M4010, | |
1428 | OPTION_M4100, | |
1429 | OPTION_NO_M4100, | |
1430 | OPTION_M3900, | |
1431 | OPTION_NO_M3900, | |
1432 | OPTION_M7000_HILO_FIX, | |
1433 | OPTION_MNO_7000_HILO_FIX, | |
1434 | OPTION_FIX_24K, | |
1435 | OPTION_NO_FIX_24K, | |
a8d14a88 CM |
1436 | OPTION_FIX_RM7000, |
1437 | OPTION_NO_FIX_RM7000, | |
c31f3936 RS |
1438 | OPTION_FIX_LOONGSON2F_JUMP, |
1439 | OPTION_NO_FIX_LOONGSON2F_JUMP, | |
1440 | OPTION_FIX_LOONGSON2F_NOP, | |
1441 | OPTION_NO_FIX_LOONGSON2F_NOP, | |
1442 | OPTION_FIX_VR4120, | |
1443 | OPTION_NO_FIX_VR4120, | |
1444 | OPTION_FIX_VR4130, | |
1445 | OPTION_NO_FIX_VR4130, | |
1446 | OPTION_FIX_CN63XXP1, | |
1447 | OPTION_NO_FIX_CN63XXP1, | |
1448 | OPTION_TRAP, | |
1449 | OPTION_BREAK, | |
1450 | OPTION_EB, | |
1451 | OPTION_EL, | |
1452 | OPTION_FP32, | |
1453 | OPTION_GP32, | |
1454 | OPTION_CONSTRUCT_FLOATS, | |
1455 | OPTION_NO_CONSTRUCT_FLOATS, | |
1456 | OPTION_FP64, | |
351cdf24 | 1457 | OPTION_FPXX, |
c31f3936 RS |
1458 | OPTION_GP64, |
1459 | OPTION_RELAX_BRANCH, | |
1460 | OPTION_NO_RELAX_BRANCH, | |
833794fc MR |
1461 | OPTION_INSN32, |
1462 | OPTION_NO_INSN32, | |
c31f3936 RS |
1463 | OPTION_MSHARED, |
1464 | OPTION_MNO_SHARED, | |
1465 | OPTION_MSYM32, | |
1466 | OPTION_MNO_SYM32, | |
1467 | OPTION_SOFT_FLOAT, | |
1468 | OPTION_HARD_FLOAT, | |
1469 | OPTION_SINGLE_FLOAT, | |
1470 | OPTION_DOUBLE_FLOAT, | |
1471 | OPTION_32, | |
c31f3936 RS |
1472 | OPTION_CALL_SHARED, |
1473 | OPTION_CALL_NONPIC, | |
1474 | OPTION_NON_SHARED, | |
1475 | OPTION_XGOT, | |
1476 | OPTION_MABI, | |
1477 | OPTION_N32, | |
1478 | OPTION_64, | |
1479 | OPTION_MDEBUG, | |
1480 | OPTION_NO_MDEBUG, | |
1481 | OPTION_PDR, | |
1482 | OPTION_NO_PDR, | |
1483 | OPTION_MVXWORKS_PIC, | |
ba92f887 | 1484 | OPTION_NAN, |
351cdf24 MF |
1485 | OPTION_ODD_SPREG, |
1486 | OPTION_NO_ODD_SPREG, | |
c31f3936 RS |
1487 | OPTION_END_OF_ENUM |
1488 | }; | |
1489 | ||
1490 | struct option md_longopts[] = | |
1491 | { | |
1492 | /* Options which specify architecture. */ | |
1493 | {"march", required_argument, NULL, OPTION_MARCH}, | |
1494 | {"mtune", required_argument, NULL, OPTION_MTUNE}, | |
1495 | {"mips0", no_argument, NULL, OPTION_MIPS1}, | |
1496 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
1497 | {"mips2", no_argument, NULL, OPTION_MIPS2}, | |
1498 | {"mips3", no_argument, NULL, OPTION_MIPS3}, | |
1499 | {"mips4", no_argument, NULL, OPTION_MIPS4}, | |
1500 | {"mips5", no_argument, NULL, OPTION_MIPS5}, | |
1501 | {"mips32", no_argument, NULL, OPTION_MIPS32}, | |
1502 | {"mips64", no_argument, NULL, OPTION_MIPS64}, | |
1503 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, | |
ae52f483 AB |
1504 | {"mips32r3", no_argument, NULL, OPTION_MIPS32R3}, |
1505 | {"mips32r5", no_argument, NULL, OPTION_MIPS32R5}, | |
7361da2c | 1506 | {"mips32r6", no_argument, NULL, OPTION_MIPS32R6}, |
c31f3936 | 1507 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, |
ae52f483 AB |
1508 | {"mips64r3", no_argument, NULL, OPTION_MIPS64R3}, |
1509 | {"mips64r5", no_argument, NULL, OPTION_MIPS64R5}, | |
7361da2c | 1510 | {"mips64r6", no_argument, NULL, OPTION_MIPS64R6}, |
c31f3936 RS |
1511 | |
1512 | /* Options which specify Application Specific Extensions (ASEs). */ | |
1513 | {"mips16", no_argument, NULL, OPTION_MIPS16}, | |
1514 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, | |
1515 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, | |
1516 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, | |
1517 | {"mdmx", no_argument, NULL, OPTION_MDMX}, | |
1518 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, | |
1519 | {"mdsp", no_argument, NULL, OPTION_DSP}, | |
1520 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, | |
1521 | {"mmt", no_argument, NULL, OPTION_MT}, | |
1522 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, | |
1523 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, | |
1524 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, | |
1525 | {"mdspr2", no_argument, NULL, OPTION_DSPR2}, | |
1526 | {"mno-dspr2", no_argument, NULL, OPTION_NO_DSPR2}, | |
8f4f9071 MF |
1527 | {"mdspr3", no_argument, NULL, OPTION_DSPR3}, |
1528 | {"mno-dspr3", no_argument, NULL, OPTION_NO_DSPR3}, | |
c31f3936 RS |
1529 | {"meva", no_argument, NULL, OPTION_EVA}, |
1530 | {"mno-eva", no_argument, NULL, OPTION_NO_EVA}, | |
1531 | {"mmicromips", no_argument, NULL, OPTION_MICROMIPS}, | |
1532 | {"mno-micromips", no_argument, NULL, OPTION_NO_MICROMIPS}, | |
1533 | {"mmcu", no_argument, NULL, OPTION_MCU}, | |
1534 | {"mno-mcu", no_argument, NULL, OPTION_NO_MCU}, | |
1535 | {"mvirt", no_argument, NULL, OPTION_VIRT}, | |
1536 | {"mno-virt", no_argument, NULL, OPTION_NO_VIRT}, | |
56d438b1 CF |
1537 | {"mmsa", no_argument, NULL, OPTION_MSA}, |
1538 | {"mno-msa", no_argument, NULL, OPTION_NO_MSA}, | |
7d64c587 AB |
1539 | {"mxpa", no_argument, NULL, OPTION_XPA}, |
1540 | {"mno-xpa", no_argument, NULL, OPTION_NO_XPA}, | |
c31f3936 RS |
1541 | |
1542 | /* Old-style architecture options. Don't add more of these. */ | |
1543 | {"m4650", no_argument, NULL, OPTION_M4650}, | |
1544 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, | |
1545 | {"m4010", no_argument, NULL, OPTION_M4010}, | |
1546 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, | |
1547 | {"m4100", no_argument, NULL, OPTION_M4100}, | |
1548 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, | |
1549 | {"m3900", no_argument, NULL, OPTION_M3900}, | |
1550 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, | |
1551 | ||
1552 | /* Options which enable bug fixes. */ | |
1553 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, | |
1554 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
1555 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
1556 | {"mfix-loongson2f-jump", no_argument, NULL, OPTION_FIX_LOONGSON2F_JUMP}, | |
1557 | {"mno-fix-loongson2f-jump", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_JUMP}, | |
1558 | {"mfix-loongson2f-nop", no_argument, NULL, OPTION_FIX_LOONGSON2F_NOP}, | |
1559 | {"mno-fix-loongson2f-nop", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_NOP}, | |
1560 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, | |
1561 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
1562 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, | |
1563 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
1564 | {"mfix-24k", no_argument, NULL, OPTION_FIX_24K}, | |
1565 | {"mno-fix-24k", no_argument, NULL, OPTION_NO_FIX_24K}, | |
a8d14a88 CM |
1566 | {"mfix-rm7000", no_argument, NULL, OPTION_FIX_RM7000}, |
1567 | {"mno-fix-rm7000", no_argument, NULL, OPTION_NO_FIX_RM7000}, | |
c31f3936 RS |
1568 | {"mfix-cn63xxp1", no_argument, NULL, OPTION_FIX_CN63XXP1}, |
1569 | {"mno-fix-cn63xxp1", no_argument, NULL, OPTION_NO_FIX_CN63XXP1}, | |
1570 | ||
1571 | /* Miscellaneous options. */ | |
1572 | {"trap", no_argument, NULL, OPTION_TRAP}, | |
1573 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
1574 | {"break", no_argument, NULL, OPTION_BREAK}, | |
1575 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
1576 | {"EB", no_argument, NULL, OPTION_EB}, | |
1577 | {"EL", no_argument, NULL, OPTION_EL}, | |
1578 | {"mfp32", no_argument, NULL, OPTION_FP32}, | |
1579 | {"mgp32", no_argument, NULL, OPTION_GP32}, | |
1580 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, | |
1581 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, | |
1582 | {"mfp64", no_argument, NULL, OPTION_FP64}, | |
351cdf24 | 1583 | {"mfpxx", no_argument, NULL, OPTION_FPXX}, |
c31f3936 RS |
1584 | {"mgp64", no_argument, NULL, OPTION_GP64}, |
1585 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, | |
1586 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
833794fc MR |
1587 | {"minsn32", no_argument, NULL, OPTION_INSN32}, |
1588 | {"mno-insn32", no_argument, NULL, OPTION_NO_INSN32}, | |
c31f3936 RS |
1589 | {"mshared", no_argument, NULL, OPTION_MSHARED}, |
1590 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
1591 | {"msym32", no_argument, NULL, OPTION_MSYM32}, | |
1592 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
1593 | {"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT}, | |
1594 | {"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT}, | |
1595 | {"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT}, | |
1596 | {"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT}, | |
351cdf24 MF |
1597 | {"modd-spreg", no_argument, NULL, OPTION_ODD_SPREG}, |
1598 | {"mno-odd-spreg", no_argument, NULL, OPTION_NO_ODD_SPREG}, | |
c31f3936 RS |
1599 | |
1600 | /* Strictly speaking this next option is ELF specific, | |
1601 | but we allow it for other ports as well in order to | |
1602 | make testing easier. */ | |
1603 | {"32", no_argument, NULL, OPTION_32}, | |
1604 | ||
1605 | /* ELF-specific options. */ | |
c31f3936 RS |
1606 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
1607 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
1608 | {"call_nonpic", no_argument, NULL, OPTION_CALL_NONPIC}, | |
1609 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, | |
1610 | {"xgot", no_argument, NULL, OPTION_XGOT}, | |
1611 | {"mabi", required_argument, NULL, OPTION_MABI}, | |
1612 | {"n32", no_argument, NULL, OPTION_N32}, | |
1613 | {"64", no_argument, NULL, OPTION_64}, | |
1614 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, | |
1615 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, | |
1616 | {"mpdr", no_argument, NULL, OPTION_PDR}, | |
1617 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, | |
1618 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, | |
ba92f887 | 1619 | {"mnan", required_argument, NULL, OPTION_NAN}, |
c31f3936 RS |
1620 | |
1621 | {NULL, no_argument, NULL, 0} | |
1622 | }; | |
1623 | size_t md_longopts_size = sizeof (md_longopts); | |
1624 | \f | |
c6278170 RS |
1625 | /* Information about either an Application Specific Extension or an |
1626 | optional architecture feature that, for simplicity, we treat in the | |
1627 | same way as an ASE. */ | |
1628 | struct mips_ase | |
1629 | { | |
1630 | /* The name of the ASE, used in both the command-line and .set options. */ | |
1631 | const char *name; | |
1632 | ||
1633 | /* The associated ASE_* flags. If the ASE is available on both 32-bit | |
1634 | and 64-bit architectures, the flags here refer to the subset that | |
1635 | is available on both. */ | |
1636 | unsigned int flags; | |
1637 | ||
1638 | /* The ASE_* flag used for instructions that are available on 64-bit | |
1639 | architectures but that are not included in FLAGS. */ | |
1640 | unsigned int flags64; | |
1641 | ||
1642 | /* The command-line options that turn the ASE on and off. */ | |
1643 | int option_on; | |
1644 | int option_off; | |
1645 | ||
1646 | /* The minimum required architecture revisions for MIPS32, MIPS64, | |
1647 | microMIPS32 and microMIPS64, or -1 if the extension isn't supported. */ | |
1648 | int mips32_rev; | |
1649 | int mips64_rev; | |
1650 | int micromips32_rev; | |
1651 | int micromips64_rev; | |
7361da2c AB |
1652 | |
1653 | /* The architecture where the ASE was removed or -1 if the extension has not | |
1654 | been removed. */ | |
1655 | int rem_rev; | |
c6278170 RS |
1656 | }; |
1657 | ||
1658 | /* A table of all supported ASEs. */ | |
1659 | static const struct mips_ase mips_ases[] = { | |
1660 | { "dsp", ASE_DSP, ASE_DSP64, | |
1661 | OPTION_DSP, OPTION_NO_DSP, | |
7361da2c AB |
1662 | 2, 2, 2, 2, |
1663 | -1 }, | |
c6278170 RS |
1664 | |
1665 | { "dspr2", ASE_DSP | ASE_DSPR2, 0, | |
1666 | OPTION_DSPR2, OPTION_NO_DSPR2, | |
7361da2c AB |
1667 | 2, 2, 2, 2, |
1668 | -1 }, | |
c6278170 | 1669 | |
8f4f9071 MF |
1670 | { "dspr3", ASE_DSP | ASE_DSPR2 | ASE_DSPR3, 0, |
1671 | OPTION_DSPR3, OPTION_NO_DSPR3, | |
1672 | 6, 6, -1, -1, | |
1673 | -1 }, | |
1674 | ||
c6278170 RS |
1675 | { "eva", ASE_EVA, 0, |
1676 | OPTION_EVA, OPTION_NO_EVA, | |
7361da2c AB |
1677 | 2, 2, 2, 2, |
1678 | -1 }, | |
c6278170 RS |
1679 | |
1680 | { "mcu", ASE_MCU, 0, | |
1681 | OPTION_MCU, OPTION_NO_MCU, | |
7361da2c AB |
1682 | 2, 2, 2, 2, |
1683 | -1 }, | |
c6278170 RS |
1684 | |
1685 | /* Deprecated in MIPS64r5, but we don't implement that yet. */ | |
1686 | { "mdmx", ASE_MDMX, 0, | |
1687 | OPTION_MDMX, OPTION_NO_MDMX, | |
7361da2c AB |
1688 | -1, 1, -1, -1, |
1689 | 6 }, | |
c6278170 RS |
1690 | |
1691 | /* Requires 64-bit FPRs, so the minimum MIPS32 revision is 2. */ | |
1692 | { "mips3d", ASE_MIPS3D, 0, | |
1693 | OPTION_MIPS3D, OPTION_NO_MIPS3D, | |
7361da2c AB |
1694 | 2, 1, -1, -1, |
1695 | 6 }, | |
c6278170 RS |
1696 | |
1697 | { "mt", ASE_MT, 0, | |
1698 | OPTION_MT, OPTION_NO_MT, | |
7361da2c AB |
1699 | 2, 2, -1, -1, |
1700 | -1 }, | |
c6278170 RS |
1701 | |
1702 | { "smartmips", ASE_SMARTMIPS, 0, | |
1703 | OPTION_SMARTMIPS, OPTION_NO_SMARTMIPS, | |
7361da2c AB |
1704 | 1, -1, -1, -1, |
1705 | 6 }, | |
c6278170 RS |
1706 | |
1707 | { "virt", ASE_VIRT, ASE_VIRT64, | |
1708 | OPTION_VIRT, OPTION_NO_VIRT, | |
7361da2c AB |
1709 | 2, 2, 2, 2, |
1710 | -1 }, | |
56d438b1 CF |
1711 | |
1712 | { "msa", ASE_MSA, ASE_MSA64, | |
1713 | OPTION_MSA, OPTION_NO_MSA, | |
7361da2c AB |
1714 | 2, 2, 2, 2, |
1715 | -1 }, | |
7d64c587 AB |
1716 | |
1717 | { "xpa", ASE_XPA, 0, | |
1718 | OPTION_XPA, OPTION_NO_XPA, | |
7361da2c AB |
1719 | 2, 2, -1, -1, |
1720 | -1 }, | |
c6278170 RS |
1721 | }; |
1722 | ||
1723 | /* The set of ASEs that require -mfp64. */ | |
82bda27b | 1724 | #define FP64_ASES (ASE_MIPS3D | ASE_MDMX | ASE_MSA) |
c6278170 RS |
1725 | |
1726 | /* Groups of ASE_* flags that represent different revisions of an ASE. */ | |
1727 | static const unsigned int mips_ase_groups[] = { | |
8f4f9071 | 1728 | ASE_DSP | ASE_DSPR2 | ASE_DSPR3 |
c6278170 RS |
1729 | }; |
1730 | \f | |
252b5132 RH |
1731 | /* Pseudo-op table. |
1732 | ||
1733 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1734 | should be defined here, but are currently unsupported: .alias, | |
1735 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1736 | ||
1737 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1738 | specific to the type of debugging information being generated, and | |
1739 | should be defined by the object format: .aent, .begin, .bend, | |
1740 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1741 | .vreg. | |
1742 | ||
1743 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1744 | not MIPS CPU specific, but are also not specific to the object file | |
1745 | format. This file is probably the best place to define them, but | |
d84bcf09 | 1746 | they are not currently supported: .asm0, .endr, .lab, .struct. */ |
252b5132 | 1747 | |
e972090a NC |
1748 | static const pseudo_typeS mips_pseudo_table[] = |
1749 | { | |
beae10d5 | 1750 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1751 | {"option", s_option, 0}, |
1752 | {"set", s_mipsset, 0}, | |
1753 | {"rdata", s_change_sec, 'r'}, | |
1754 | {"sdata", s_change_sec, 's'}, | |
1755 | {"livereg", s_ignore, 0}, | |
1756 | {"abicalls", s_abicalls, 0}, | |
1757 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1758 | {"cpsetup", s_cpsetup, 0}, |
1759 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1760 | {"cprestore", s_cprestore, 0}, |
6478892d | 1761 | {"cpreturn", s_cpreturn, 0}, |
741d6ea8 JM |
1762 | {"dtprelword", s_dtprelword, 0}, |
1763 | {"dtpreldword", s_dtpreldword, 0}, | |
d0f13682 CLT |
1764 | {"tprelword", s_tprelword, 0}, |
1765 | {"tpreldword", s_tpreldword, 0}, | |
6478892d | 1766 | {"gpvalue", s_gpvalue, 0}, |
252b5132 | 1767 | {"gpword", s_gpword, 0}, |
10181a0d | 1768 | {"gpdword", s_gpdword, 0}, |
a3f278e2 | 1769 | {"ehword", s_ehword, 0}, |
252b5132 RH |
1770 | {"cpadd", s_cpadd, 0}, |
1771 | {"insn", s_insn, 0}, | |
ba92f887 | 1772 | {"nan", s_nan, 0}, |
919731af | 1773 | {"module", s_module, 0}, |
252b5132 | 1774 | |
beae10d5 | 1775 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 | 1776 | chips. */ |
38a57ae7 | 1777 | {"asciiz", stringer, 8 + 1}, |
252b5132 RH |
1778 | {"bss", s_change_sec, 'b'}, |
1779 | {"err", s_err, 0}, | |
1780 | {"half", s_cons, 1}, | |
1781 | {"dword", s_cons, 3}, | |
1782 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1783 | {"origin", s_org, 0}, |
1784 | {"repeat", s_rept, 0}, | |
252b5132 | 1785 | |
998b3c36 MR |
1786 | /* For MIPS this is non-standard, but we define it for consistency. */ |
1787 | {"sbss", s_change_sec, 'B'}, | |
1788 | ||
beae10d5 | 1789 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1790 | here for one reason or another. */ |
1791 | {"align", s_align, 0}, | |
1792 | {"byte", s_cons, 0}, | |
1793 | {"data", s_change_sec, 'd'}, | |
1794 | {"double", s_float_cons, 'd'}, | |
1795 | {"float", s_float_cons, 'f'}, | |
1796 | {"globl", s_mips_globl, 0}, | |
1797 | {"global", s_mips_globl, 0}, | |
1798 | {"hword", s_cons, 1}, | |
1799 | {"int", s_cons, 2}, | |
1800 | {"long", s_cons, 2}, | |
1801 | {"octa", s_cons, 4}, | |
1802 | {"quad", s_cons, 3}, | |
cca86cc8 | 1803 | {"section", s_change_section, 0}, |
252b5132 RH |
1804 | {"short", s_cons, 1}, |
1805 | {"single", s_float_cons, 'f'}, | |
754e2bb9 | 1806 | {"stabd", s_mips_stab, 'd'}, |
252b5132 | 1807 | {"stabn", s_mips_stab, 'n'}, |
754e2bb9 | 1808 | {"stabs", s_mips_stab, 's'}, |
252b5132 RH |
1809 | {"text", s_change_sec, 't'}, |
1810 | {"word", s_cons, 2}, | |
add56521 | 1811 | |
add56521 | 1812 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1813 | |
43841e91 | 1814 | { NULL, NULL, 0 }, |
252b5132 RH |
1815 | }; |
1816 | ||
e972090a NC |
1817 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1818 | { | |
beae10d5 KH |
1819 | /* These pseudo-ops should be defined by the object file format. |
1820 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1821 | {"aent", s_mips_ent, 1}, |
1822 | {"bgnb", s_ignore, 0}, | |
1823 | {"end", s_mips_end, 0}, | |
1824 | {"endb", s_ignore, 0}, | |
1825 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1826 | {"file", s_mips_file, 0}, |
252b5132 RH |
1827 | {"fmask", s_mips_mask, 'F'}, |
1828 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1829 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1830 | {"mask", s_mips_mask, 'R'}, |
1831 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1832 | { NULL, NULL, 0 }, |
252b5132 RH |
1833 | }; |
1834 | ||
3ae8dd8d MR |
1835 | /* Export the ABI address size for use by TC_ADDRESS_BYTES for the |
1836 | purpose of the `.dc.a' internal pseudo-op. */ | |
1837 | ||
1838 | int | |
1839 | mips_address_bytes (void) | |
1840 | { | |
919731af | 1841 | file_mips_check_options (); |
3ae8dd8d MR |
1842 | return HAVE_64BIT_ADDRESSES ? 8 : 4; |
1843 | } | |
1844 | ||
17a2f251 | 1845 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1846 | |
1847 | void | |
17a2f251 | 1848 | mips_pop_insert (void) |
252b5132 RH |
1849 | { |
1850 | pop_insert (mips_pseudo_table); | |
1851 | if (! ECOFF_DEBUGGING) | |
1852 | pop_insert (mips_nonecoff_pseudo_table); | |
1853 | } | |
1854 | \f | |
1855 | /* Symbols labelling the current insn. */ | |
1856 | ||
e972090a NC |
1857 | struct insn_label_list |
1858 | { | |
252b5132 RH |
1859 | struct insn_label_list *next; |
1860 | symbolS *label; | |
1861 | }; | |
1862 | ||
252b5132 | 1863 | static struct insn_label_list *free_insn_labels; |
742a56fe | 1864 | #define label_list tc_segment_info_data.labels |
252b5132 | 1865 | |
17a2f251 | 1866 | static void mips_clear_insn_labels (void); |
df58fc94 RS |
1867 | static void mips_mark_labels (void); |
1868 | static void mips_compressed_mark_labels (void); | |
252b5132 RH |
1869 | |
1870 | static inline void | |
17a2f251 | 1871 | mips_clear_insn_labels (void) |
252b5132 | 1872 | { |
ed9e98c2 | 1873 | struct insn_label_list **pl; |
a8dbcb85 | 1874 | segment_info_type *si; |
252b5132 | 1875 | |
a8dbcb85 TS |
1876 | if (now_seg) |
1877 | { | |
1878 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1879 | ; | |
3739860c | 1880 | |
a8dbcb85 TS |
1881 | si = seg_info (now_seg); |
1882 | *pl = si->label_list; | |
1883 | si->label_list = NULL; | |
1884 | } | |
252b5132 | 1885 | } |
a8dbcb85 | 1886 | |
df58fc94 RS |
1887 | /* Mark instruction labels in MIPS16/microMIPS mode. */ |
1888 | ||
1889 | static inline void | |
1890 | mips_mark_labels (void) | |
1891 | { | |
1892 | if (HAVE_CODE_COMPRESSION) | |
1893 | mips_compressed_mark_labels (); | |
1894 | } | |
252b5132 RH |
1895 | \f |
1896 | static char *expr_end; | |
1897 | ||
e423441d | 1898 | /* An expression in a macro instruction. This is set by mips_ip and |
b0e6f033 | 1899 | mips16_ip and when populated is always an O_constant. */ |
252b5132 RH |
1900 | |
1901 | static expressionS imm_expr; | |
252b5132 | 1902 | |
77bd4346 RS |
1903 | /* The relocatable field in an instruction and the relocs associated |
1904 | with it. These variables are used for instructions like LUI and | |
1905 | JAL as well as true offsets. They are also used for address | |
1906 | operands in macros. */ | |
252b5132 | 1907 | |
77bd4346 | 1908 | static expressionS offset_expr; |
f6688943 TS |
1909 | static bfd_reloc_code_real_type offset_reloc[3] |
1910 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1911 | |
df58fc94 RS |
1912 | /* This is set to the resulting size of the instruction to be produced |
1913 | by mips16_ip if an explicit extension is used or by mips_ip if an | |
1914 | explicit size is supplied. */ | |
252b5132 | 1915 | |
df58fc94 | 1916 | static unsigned int forced_insn_length; |
252b5132 | 1917 | |
e1b47bd5 RS |
1918 | /* True if we are assembling an instruction. All dot symbols defined during |
1919 | this time should be treated as code labels. */ | |
1920 | ||
1921 | static bfd_boolean mips_assembling_insn; | |
1922 | ||
ecb4347a DJ |
1923 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1924 | ECOFF debugging. */ | |
252b5132 RH |
1925 | |
1926 | static segT pdr_seg; | |
252b5132 | 1927 | |
e013f690 TS |
1928 | /* The default target format to use. */ |
1929 | ||
aeffff67 RS |
1930 | #if defined (TE_FreeBSD) |
1931 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips-freebsd" | |
1932 | #elif defined (TE_TMIPS) | |
1933 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips" | |
1934 | #else | |
1935 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX ENDIAN "mips" | |
1936 | #endif | |
1937 | ||
e013f690 | 1938 | const char * |
17a2f251 | 1939 | mips_target_format (void) |
e013f690 TS |
1940 | { |
1941 | switch (OUTPUT_FLAVOR) | |
1942 | { | |
e013f690 | 1943 | case bfd_target_elf_flavour: |
0a44bf69 RS |
1944 | #ifdef TE_VXWORKS |
1945 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1946 | return (target_big_endian | |
1947 | ? "elf32-bigmips-vxworks" | |
1948 | : "elf32-littlemips-vxworks"); | |
1949 | #endif | |
e013f690 | 1950 | return (target_big_endian |
cfe86eaa | 1951 | ? (HAVE_64BIT_OBJECTS |
aeffff67 | 1952 | ? ELF_TARGET ("elf64-", "big") |
cfe86eaa | 1953 | : (HAVE_NEWABI |
aeffff67 RS |
1954 | ? ELF_TARGET ("elf32-n", "big") |
1955 | : ELF_TARGET ("elf32-", "big"))) | |
cfe86eaa | 1956 | : (HAVE_64BIT_OBJECTS |
aeffff67 | 1957 | ? ELF_TARGET ("elf64-", "little") |
cfe86eaa | 1958 | : (HAVE_NEWABI |
aeffff67 RS |
1959 | ? ELF_TARGET ("elf32-n", "little") |
1960 | : ELF_TARGET ("elf32-", "little")))); | |
e013f690 TS |
1961 | default: |
1962 | abort (); | |
1963 | return NULL; | |
1964 | } | |
1965 | } | |
1966 | ||
c6278170 RS |
1967 | /* Return the ISA revision that is currently in use, or 0 if we are |
1968 | generating code for MIPS V or below. */ | |
1969 | ||
1970 | static int | |
1971 | mips_isa_rev (void) | |
1972 | { | |
1973 | if (mips_opts.isa == ISA_MIPS32R2 || mips_opts.isa == ISA_MIPS64R2) | |
1974 | return 2; | |
1975 | ||
ae52f483 AB |
1976 | if (mips_opts.isa == ISA_MIPS32R3 || mips_opts.isa == ISA_MIPS64R3) |
1977 | return 3; | |
1978 | ||
1979 | if (mips_opts.isa == ISA_MIPS32R5 || mips_opts.isa == ISA_MIPS64R5) | |
1980 | return 5; | |
1981 | ||
7361da2c AB |
1982 | if (mips_opts.isa == ISA_MIPS32R6 || mips_opts.isa == ISA_MIPS64R6) |
1983 | return 6; | |
1984 | ||
c6278170 RS |
1985 | /* microMIPS implies revision 2 or above. */ |
1986 | if (mips_opts.micromips) | |
1987 | return 2; | |
1988 | ||
1989 | if (mips_opts.isa == ISA_MIPS32 || mips_opts.isa == ISA_MIPS64) | |
1990 | return 1; | |
1991 | ||
1992 | return 0; | |
1993 | } | |
1994 | ||
1995 | /* Return the mask of all ASEs that are revisions of those in FLAGS. */ | |
1996 | ||
1997 | static unsigned int | |
1998 | mips_ase_mask (unsigned int flags) | |
1999 | { | |
2000 | unsigned int i; | |
2001 | ||
2002 | for (i = 0; i < ARRAY_SIZE (mips_ase_groups); i++) | |
2003 | if (flags & mips_ase_groups[i]) | |
2004 | flags |= mips_ase_groups[i]; | |
2005 | return flags; | |
2006 | } | |
2007 | ||
2008 | /* Check whether the current ISA supports ASE. Issue a warning if | |
2009 | appropriate. */ | |
2010 | ||
2011 | static void | |
2012 | mips_check_isa_supports_ase (const struct mips_ase *ase) | |
2013 | { | |
2014 | const char *base; | |
2015 | int min_rev, size; | |
2016 | static unsigned int warned_isa; | |
2017 | static unsigned int warned_fp32; | |
2018 | ||
2019 | if (ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
2020 | min_rev = mips_opts.micromips ? ase->micromips64_rev : ase->mips64_rev; | |
2021 | else | |
2022 | min_rev = mips_opts.micromips ? ase->micromips32_rev : ase->mips32_rev; | |
2023 | if ((min_rev < 0 || mips_isa_rev () < min_rev) | |
2024 | && (warned_isa & ase->flags) != ase->flags) | |
2025 | { | |
2026 | warned_isa |= ase->flags; | |
2027 | base = mips_opts.micromips ? "microMIPS" : "MIPS"; | |
2028 | size = ISA_HAS_64BIT_REGS (mips_opts.isa) ? 64 : 32; | |
2029 | if (min_rev < 0) | |
1661c76c | 2030 | as_warn (_("the %d-bit %s architecture does not support the" |
c6278170 RS |
2031 | " `%s' extension"), size, base, ase->name); |
2032 | else | |
1661c76c | 2033 | as_warn (_("the `%s' extension requires %s%d revision %d or greater"), |
c6278170 RS |
2034 | ase->name, base, size, min_rev); |
2035 | } | |
7361da2c AB |
2036 | else if ((ase->rem_rev > 0 && mips_isa_rev () >= ase->rem_rev) |
2037 | && (warned_isa & ase->flags) != ase->flags) | |
2038 | { | |
2039 | warned_isa |= ase->flags; | |
2040 | base = mips_opts.micromips ? "microMIPS" : "MIPS"; | |
2041 | size = ISA_HAS_64BIT_REGS (mips_opts.isa) ? 64 : 32; | |
2042 | as_warn (_("the `%s' extension was removed in %s%d revision %d"), | |
2043 | ase->name, base, size, ase->rem_rev); | |
2044 | } | |
2045 | ||
c6278170 | 2046 | if ((ase->flags & FP64_ASES) |
0b35dfee | 2047 | && mips_opts.fp != 64 |
c6278170 RS |
2048 | && (warned_fp32 & ase->flags) != ase->flags) |
2049 | { | |
2050 | warned_fp32 |= ase->flags; | |
1661c76c | 2051 | as_warn (_("the `%s' extension requires 64-bit FPRs"), ase->name); |
c6278170 RS |
2052 | } |
2053 | } | |
2054 | ||
2055 | /* Check all enabled ASEs to see whether they are supported by the | |
2056 | chosen architecture. */ | |
2057 | ||
2058 | static void | |
2059 | mips_check_isa_supports_ases (void) | |
2060 | { | |
2061 | unsigned int i, mask; | |
2062 | ||
2063 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
2064 | { | |
2065 | mask = mips_ase_mask (mips_ases[i].flags); | |
2066 | if ((mips_opts.ase & mask) == mips_ases[i].flags) | |
2067 | mips_check_isa_supports_ase (&mips_ases[i]); | |
2068 | } | |
2069 | } | |
2070 | ||
2071 | /* Set the state of ASE to ENABLED_P. Return the mask of ASE_* flags | |
2072 | that were affected. */ | |
2073 | ||
2074 | static unsigned int | |
919731af | 2075 | mips_set_ase (const struct mips_ase *ase, struct mips_set_options *opts, |
2076 | bfd_boolean enabled_p) | |
c6278170 RS |
2077 | { |
2078 | unsigned int mask; | |
2079 | ||
2080 | mask = mips_ase_mask (ase->flags); | |
919731af | 2081 | opts->ase &= ~mask; |
c6278170 | 2082 | if (enabled_p) |
919731af | 2083 | opts->ase |= ase->flags; |
c6278170 RS |
2084 | return mask; |
2085 | } | |
2086 | ||
2087 | /* Return the ASE called NAME, or null if none. */ | |
2088 | ||
2089 | static const struct mips_ase * | |
2090 | mips_lookup_ase (const char *name) | |
2091 | { | |
2092 | unsigned int i; | |
2093 | ||
2094 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
2095 | if (strcmp (name, mips_ases[i].name) == 0) | |
2096 | return &mips_ases[i]; | |
2097 | return NULL; | |
2098 | } | |
2099 | ||
df58fc94 | 2100 | /* Return the length of a microMIPS instruction in bytes. If bits of |
100b4f2e MR |
2101 | the mask beyond the low 16 are 0, then it is a 16-bit instruction, |
2102 | otherwise it is a 32-bit instruction. */ | |
df58fc94 RS |
2103 | |
2104 | static inline unsigned int | |
2105 | micromips_insn_length (const struct mips_opcode *mo) | |
2106 | { | |
2107 | return (mo->mask >> 16) == 0 ? 2 : 4; | |
2108 | } | |
2109 | ||
5c04167a RS |
2110 | /* Return the length of MIPS16 instruction OPCODE. */ |
2111 | ||
2112 | static inline unsigned int | |
2113 | mips16_opcode_length (unsigned long opcode) | |
2114 | { | |
2115 | return (opcode >> 16) == 0 ? 2 : 4; | |
2116 | } | |
2117 | ||
1e915849 RS |
2118 | /* Return the length of instruction INSN. */ |
2119 | ||
2120 | static inline unsigned int | |
2121 | insn_length (const struct mips_cl_insn *insn) | |
2122 | { | |
df58fc94 RS |
2123 | if (mips_opts.micromips) |
2124 | return micromips_insn_length (insn->insn_mo); | |
2125 | else if (mips_opts.mips16) | |
5c04167a | 2126 | return mips16_opcode_length (insn->insn_opcode); |
df58fc94 | 2127 | else |
1e915849 | 2128 | return 4; |
1e915849 RS |
2129 | } |
2130 | ||
2131 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
2132 | ||
2133 | static void | |
2134 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
2135 | { | |
2136 | size_t i; | |
2137 | ||
2138 | insn->insn_mo = mo; | |
1e915849 RS |
2139 | insn->insn_opcode = mo->match; |
2140 | insn->frag = NULL; | |
2141 | insn->where = 0; | |
2142 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
2143 | insn->fixp[i] = NULL; | |
2144 | insn->fixed_p = (mips_opts.noreorder > 0); | |
2145 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
2146 | insn->mips16_absolute_jump_p = 0; | |
15be625d | 2147 | insn->complete_p = 0; |
e407c74b | 2148 | insn->cleared_p = 0; |
1e915849 RS |
2149 | } |
2150 | ||
fc76e730 RS |
2151 | /* Get a list of all the operands in INSN. */ |
2152 | ||
2153 | static const struct mips_operand_array * | |
2154 | insn_operands (const struct mips_cl_insn *insn) | |
2155 | { | |
2156 | if (insn->insn_mo >= &mips_opcodes[0] | |
2157 | && insn->insn_mo < &mips_opcodes[NUMOPCODES]) | |
2158 | return &mips_operands[insn->insn_mo - &mips_opcodes[0]]; | |
2159 | ||
2160 | if (insn->insn_mo >= &mips16_opcodes[0] | |
2161 | && insn->insn_mo < &mips16_opcodes[bfd_mips16_num_opcodes]) | |
2162 | return &mips16_operands[insn->insn_mo - &mips16_opcodes[0]]; | |
2163 | ||
2164 | if (insn->insn_mo >= µmips_opcodes[0] | |
2165 | && insn->insn_mo < µmips_opcodes[bfd_micromips_num_opcodes]) | |
2166 | return µmips_operands[insn->insn_mo - µmips_opcodes[0]]; | |
2167 | ||
2168 | abort (); | |
2169 | } | |
2170 | ||
2171 | /* Get a description of operand OPNO of INSN. */ | |
2172 | ||
2173 | static const struct mips_operand * | |
2174 | insn_opno (const struct mips_cl_insn *insn, unsigned opno) | |
2175 | { | |
2176 | const struct mips_operand_array *operands; | |
2177 | ||
2178 | operands = insn_operands (insn); | |
2179 | if (opno >= MAX_OPERANDS || !operands->operand[opno]) | |
2180 | abort (); | |
2181 | return operands->operand[opno]; | |
2182 | } | |
2183 | ||
e077a1c8 RS |
2184 | /* Install UVAL as the value of OPERAND in INSN. */ |
2185 | ||
2186 | static inline void | |
2187 | insn_insert_operand (struct mips_cl_insn *insn, | |
2188 | const struct mips_operand *operand, unsigned int uval) | |
2189 | { | |
2190 | insn->insn_opcode = mips_insert_operand (operand, insn->insn_opcode, uval); | |
2191 | } | |
2192 | ||
fc76e730 RS |
2193 | /* Extract the value of OPERAND from INSN. */ |
2194 | ||
2195 | static inline unsigned | |
2196 | insn_extract_operand (const struct mips_cl_insn *insn, | |
2197 | const struct mips_operand *operand) | |
2198 | { | |
2199 | return mips_extract_operand (operand, insn->insn_opcode); | |
2200 | } | |
2201 | ||
df58fc94 | 2202 | /* Record the current MIPS16/microMIPS mode in now_seg. */ |
742a56fe RS |
2203 | |
2204 | static void | |
df58fc94 | 2205 | mips_record_compressed_mode (void) |
742a56fe RS |
2206 | { |
2207 | segment_info_type *si; | |
2208 | ||
2209 | si = seg_info (now_seg); | |
2210 | if (si->tc_segment_info_data.mips16 != mips_opts.mips16) | |
2211 | si->tc_segment_info_data.mips16 = mips_opts.mips16; | |
df58fc94 RS |
2212 | if (si->tc_segment_info_data.micromips != mips_opts.micromips) |
2213 | si->tc_segment_info_data.micromips = mips_opts.micromips; | |
742a56fe RS |
2214 | } |
2215 | ||
4d68580a RS |
2216 | /* Read a standard MIPS instruction from BUF. */ |
2217 | ||
2218 | static unsigned long | |
2219 | read_insn (char *buf) | |
2220 | { | |
2221 | if (target_big_endian) | |
2222 | return bfd_getb32 ((bfd_byte *) buf); | |
2223 | else | |
2224 | return bfd_getl32 ((bfd_byte *) buf); | |
2225 | } | |
2226 | ||
2227 | /* Write standard MIPS instruction INSN to BUF. Return a pointer to | |
2228 | the next byte. */ | |
2229 | ||
2230 | static char * | |
2231 | write_insn (char *buf, unsigned int insn) | |
2232 | { | |
2233 | md_number_to_chars (buf, insn, 4); | |
2234 | return buf + 4; | |
2235 | } | |
2236 | ||
2237 | /* Read a microMIPS or MIPS16 opcode from BUF, given that it | |
2238 | has length LENGTH. */ | |
2239 | ||
2240 | static unsigned long | |
2241 | read_compressed_insn (char *buf, unsigned int length) | |
2242 | { | |
2243 | unsigned long insn; | |
2244 | unsigned int i; | |
2245 | ||
2246 | insn = 0; | |
2247 | for (i = 0; i < length; i += 2) | |
2248 | { | |
2249 | insn <<= 16; | |
2250 | if (target_big_endian) | |
2251 | insn |= bfd_getb16 ((char *) buf); | |
2252 | else | |
2253 | insn |= bfd_getl16 ((char *) buf); | |
2254 | buf += 2; | |
2255 | } | |
2256 | return insn; | |
2257 | } | |
2258 | ||
5c04167a RS |
2259 | /* Write microMIPS or MIPS16 instruction INSN to BUF, given that the |
2260 | instruction is LENGTH bytes long. Return a pointer to the next byte. */ | |
2261 | ||
2262 | static char * | |
2263 | write_compressed_insn (char *buf, unsigned int insn, unsigned int length) | |
2264 | { | |
2265 | unsigned int i; | |
2266 | ||
2267 | for (i = 0; i < length; i += 2) | |
2268 | md_number_to_chars (buf + i, insn >> ((length - i - 2) * 8), 2); | |
2269 | return buf + length; | |
2270 | } | |
2271 | ||
1e915849 RS |
2272 | /* Install INSN at the location specified by its "frag" and "where" fields. */ |
2273 | ||
2274 | static void | |
2275 | install_insn (const struct mips_cl_insn *insn) | |
2276 | { | |
2277 | char *f = insn->frag->fr_literal + insn->where; | |
5c04167a RS |
2278 | if (HAVE_CODE_COMPRESSION) |
2279 | write_compressed_insn (f, insn->insn_opcode, insn_length (insn)); | |
1e915849 | 2280 | else |
4d68580a | 2281 | write_insn (f, insn->insn_opcode); |
df58fc94 | 2282 | mips_record_compressed_mode (); |
1e915849 RS |
2283 | } |
2284 | ||
2285 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
2286 | and install the opcode in the new location. */ | |
2287 | ||
2288 | static void | |
2289 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
2290 | { | |
2291 | size_t i; | |
2292 | ||
2293 | insn->frag = frag; | |
2294 | insn->where = where; | |
2295 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
2296 | if (insn->fixp[i] != NULL) | |
2297 | { | |
2298 | insn->fixp[i]->fx_frag = frag; | |
2299 | insn->fixp[i]->fx_where = where; | |
2300 | } | |
2301 | install_insn (insn); | |
2302 | } | |
2303 | ||
2304 | /* Add INSN to the end of the output. */ | |
2305 | ||
2306 | static void | |
2307 | add_fixed_insn (struct mips_cl_insn *insn) | |
2308 | { | |
2309 | char *f = frag_more (insn_length (insn)); | |
2310 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
2311 | } | |
2312 | ||
2313 | /* Start a variant frag and move INSN to the start of the variant part, | |
2314 | marking it as fixed. The other arguments are as for frag_var. */ | |
2315 | ||
2316 | static void | |
2317 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
2318 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
2319 | { | |
2320 | frag_grow (max_chars); | |
2321 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
2322 | insn->fixed_p = 1; | |
2323 | frag_var (rs_machine_dependent, max_chars, var, | |
2324 | subtype, symbol, offset, NULL); | |
2325 | } | |
2326 | ||
2327 | /* Insert N copies of INSN into the history buffer, starting at | |
2328 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
2329 | ||
2330 | static void | |
2331 | insert_into_history (unsigned int first, unsigned int n, | |
2332 | const struct mips_cl_insn *insn) | |
2333 | { | |
2334 | if (mips_relax.sequence != 2) | |
2335 | { | |
2336 | unsigned int i; | |
2337 | ||
2338 | for (i = ARRAY_SIZE (history); i-- > first;) | |
2339 | if (i >= first + n) | |
2340 | history[i] = history[i - n]; | |
2341 | else | |
2342 | history[i] = *insn; | |
2343 | } | |
2344 | } | |
2345 | ||
e3de51ce RS |
2346 | /* Clear the error in insn_error. */ |
2347 | ||
2348 | static void | |
2349 | clear_insn_error (void) | |
2350 | { | |
2351 | memset (&insn_error, 0, sizeof (insn_error)); | |
2352 | } | |
2353 | ||
2354 | /* Possibly record error message MSG for the current instruction. | |
2355 | If the error is about a particular argument, ARGNUM is the 1-based | |
2356 | number of that argument, otherwise it is 0. FORMAT is the format | |
2357 | of MSG. Return true if MSG was used, false if the current message | |
2358 | was kept. */ | |
2359 | ||
2360 | static bfd_boolean | |
2361 | set_insn_error_format (int argnum, enum mips_insn_error_format format, | |
2362 | const char *msg) | |
2363 | { | |
2364 | if (argnum == 0) | |
2365 | { | |
2366 | /* Give priority to errors against specific arguments, and to | |
2367 | the first whole-instruction message. */ | |
2368 | if (insn_error.msg) | |
2369 | return FALSE; | |
2370 | } | |
2371 | else | |
2372 | { | |
2373 | /* Keep insn_error if it is against a later argument. */ | |
2374 | if (argnum < insn_error.min_argnum) | |
2375 | return FALSE; | |
2376 | ||
2377 | /* If both errors are against the same argument but are different, | |
2378 | give up on reporting a specific error for this argument. | |
2379 | See the comment about mips_insn_error for details. */ | |
2380 | if (argnum == insn_error.min_argnum | |
2381 | && insn_error.msg | |
2382 | && strcmp (insn_error.msg, msg) != 0) | |
2383 | { | |
2384 | insn_error.msg = 0; | |
2385 | insn_error.min_argnum += 1; | |
2386 | return FALSE; | |
2387 | } | |
2388 | } | |
2389 | insn_error.min_argnum = argnum; | |
2390 | insn_error.format = format; | |
2391 | insn_error.msg = msg; | |
2392 | return TRUE; | |
2393 | } | |
2394 | ||
2395 | /* Record an instruction error with no % format fields. ARGNUM and MSG are | |
2396 | as for set_insn_error_format. */ | |
2397 | ||
2398 | static void | |
2399 | set_insn_error (int argnum, const char *msg) | |
2400 | { | |
2401 | set_insn_error_format (argnum, ERR_FMT_PLAIN, msg); | |
2402 | } | |
2403 | ||
2404 | /* Record an instruction error with one %d field I. ARGNUM and MSG are | |
2405 | as for set_insn_error_format. */ | |
2406 | ||
2407 | static void | |
2408 | set_insn_error_i (int argnum, const char *msg, int i) | |
2409 | { | |
2410 | if (set_insn_error_format (argnum, ERR_FMT_I, msg)) | |
2411 | insn_error.u.i = i; | |
2412 | } | |
2413 | ||
2414 | /* Record an instruction error with two %s fields S1 and S2. ARGNUM and MSG | |
2415 | are as for set_insn_error_format. */ | |
2416 | ||
2417 | static void | |
2418 | set_insn_error_ss (int argnum, const char *msg, const char *s1, const char *s2) | |
2419 | { | |
2420 | if (set_insn_error_format (argnum, ERR_FMT_SS, msg)) | |
2421 | { | |
2422 | insn_error.u.ss[0] = s1; | |
2423 | insn_error.u.ss[1] = s2; | |
2424 | } | |
2425 | } | |
2426 | ||
2427 | /* Report the error in insn_error, which is against assembly code STR. */ | |
2428 | ||
2429 | static void | |
2430 | report_insn_error (const char *str) | |
2431 | { | |
e1fa0163 | 2432 | const char *msg = concat (insn_error.msg, " `%s'", NULL); |
e3de51ce | 2433 | |
e3de51ce RS |
2434 | switch (insn_error.format) |
2435 | { | |
2436 | case ERR_FMT_PLAIN: | |
2437 | as_bad (msg, str); | |
2438 | break; | |
2439 | ||
2440 | case ERR_FMT_I: | |
2441 | as_bad (msg, insn_error.u.i, str); | |
2442 | break; | |
2443 | ||
2444 | case ERR_FMT_SS: | |
2445 | as_bad (msg, insn_error.u.ss[0], insn_error.u.ss[1], str); | |
2446 | break; | |
2447 | } | |
e1fa0163 NC |
2448 | |
2449 | free ((char *) msg); | |
e3de51ce RS |
2450 | } |
2451 | ||
71400594 RS |
2452 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
2453 | the idea is to make it obvious at a glance that each errata is | |
2454 | included. */ | |
2455 | ||
2456 | static void | |
2457 | init_vr4120_conflicts (void) | |
2458 | { | |
2459 | #define CONFLICT(FIRST, SECOND) \ | |
2460 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
2461 | ||
2462 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
2463 | CONFLICT (MACC, DIV); | |
2464 | CONFLICT (DMACC, DIV); | |
2465 | ||
2466 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
2467 | CONFLICT (DMULT, DMULT); | |
2468 | CONFLICT (DMULT, DMACC); | |
2469 | CONFLICT (DMACC, DMULT); | |
2470 | CONFLICT (DMACC, DMACC); | |
2471 | ||
2472 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
2473 | CONFLICT (MACC, MTHILO); | |
2474 | CONFLICT (DMACC, MTHILO); | |
2475 | ||
2476 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
2477 | instruction is executed immediately after a MACC or DMACC | |
2478 | instruction, the result of [either instruction] is incorrect." */ | |
2479 | CONFLICT (MACC, MULT); | |
2480 | CONFLICT (MACC, DMULT); | |
2481 | CONFLICT (DMACC, MULT); | |
2482 | CONFLICT (DMACC, DMULT); | |
2483 | ||
2484 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
2485 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
2486 | DDIV or DDIVU instruction, the result of the MACC or | |
2487 | DMACC instruction is incorrect.". */ | |
2488 | CONFLICT (DMULT, MACC); | |
2489 | CONFLICT (DMULT, DMACC); | |
2490 | CONFLICT (DIV, MACC); | |
2491 | CONFLICT (DIV, DMACC); | |
2492 | ||
2493 | #undef CONFLICT | |
2494 | } | |
2495 | ||
707bfff6 TS |
2496 | struct regname { |
2497 | const char *name; | |
2498 | unsigned int num; | |
2499 | }; | |
2500 | ||
14daeee3 | 2501 | #define RNUM_MASK 0x00000ff |
56d438b1 | 2502 | #define RTYPE_MASK 0x0ffff00 |
14daeee3 RS |
2503 | #define RTYPE_NUM 0x0000100 |
2504 | #define RTYPE_FPU 0x0000200 | |
2505 | #define RTYPE_FCC 0x0000400 | |
2506 | #define RTYPE_VEC 0x0000800 | |
2507 | #define RTYPE_GP 0x0001000 | |
2508 | #define RTYPE_CP0 0x0002000 | |
2509 | #define RTYPE_PC 0x0004000 | |
2510 | #define RTYPE_ACC 0x0008000 | |
2511 | #define RTYPE_CCC 0x0010000 | |
2512 | #define RTYPE_VI 0x0020000 | |
2513 | #define RTYPE_VF 0x0040000 | |
2514 | #define RTYPE_R5900_I 0x0080000 | |
2515 | #define RTYPE_R5900_Q 0x0100000 | |
2516 | #define RTYPE_R5900_R 0x0200000 | |
2517 | #define RTYPE_R5900_ACC 0x0400000 | |
56d438b1 | 2518 | #define RTYPE_MSA 0x0800000 |
14daeee3 | 2519 | #define RWARN 0x8000000 |
707bfff6 TS |
2520 | |
2521 | #define GENERIC_REGISTER_NUMBERS \ | |
2522 | {"$0", RTYPE_NUM | 0}, \ | |
2523 | {"$1", RTYPE_NUM | 1}, \ | |
2524 | {"$2", RTYPE_NUM | 2}, \ | |
2525 | {"$3", RTYPE_NUM | 3}, \ | |
2526 | {"$4", RTYPE_NUM | 4}, \ | |
2527 | {"$5", RTYPE_NUM | 5}, \ | |
2528 | {"$6", RTYPE_NUM | 6}, \ | |
2529 | {"$7", RTYPE_NUM | 7}, \ | |
2530 | {"$8", RTYPE_NUM | 8}, \ | |
2531 | {"$9", RTYPE_NUM | 9}, \ | |
2532 | {"$10", RTYPE_NUM | 10}, \ | |
2533 | {"$11", RTYPE_NUM | 11}, \ | |
2534 | {"$12", RTYPE_NUM | 12}, \ | |
2535 | {"$13", RTYPE_NUM | 13}, \ | |
2536 | {"$14", RTYPE_NUM | 14}, \ | |
2537 | {"$15", RTYPE_NUM | 15}, \ | |
2538 | {"$16", RTYPE_NUM | 16}, \ | |
2539 | {"$17", RTYPE_NUM | 17}, \ | |
2540 | {"$18", RTYPE_NUM | 18}, \ | |
2541 | {"$19", RTYPE_NUM | 19}, \ | |
2542 | {"$20", RTYPE_NUM | 20}, \ | |
2543 | {"$21", RTYPE_NUM | 21}, \ | |
2544 | {"$22", RTYPE_NUM | 22}, \ | |
2545 | {"$23", RTYPE_NUM | 23}, \ | |
2546 | {"$24", RTYPE_NUM | 24}, \ | |
2547 | {"$25", RTYPE_NUM | 25}, \ | |
2548 | {"$26", RTYPE_NUM | 26}, \ | |
2549 | {"$27", RTYPE_NUM | 27}, \ | |
2550 | {"$28", RTYPE_NUM | 28}, \ | |
2551 | {"$29", RTYPE_NUM | 29}, \ | |
2552 | {"$30", RTYPE_NUM | 30}, \ | |
3739860c | 2553 | {"$31", RTYPE_NUM | 31} |
707bfff6 TS |
2554 | |
2555 | #define FPU_REGISTER_NAMES \ | |
2556 | {"$f0", RTYPE_FPU | 0}, \ | |
2557 | {"$f1", RTYPE_FPU | 1}, \ | |
2558 | {"$f2", RTYPE_FPU | 2}, \ | |
2559 | {"$f3", RTYPE_FPU | 3}, \ | |
2560 | {"$f4", RTYPE_FPU | 4}, \ | |
2561 | {"$f5", RTYPE_FPU | 5}, \ | |
2562 | {"$f6", RTYPE_FPU | 6}, \ | |
2563 | {"$f7", RTYPE_FPU | 7}, \ | |
2564 | {"$f8", RTYPE_FPU | 8}, \ | |
2565 | {"$f9", RTYPE_FPU | 9}, \ | |
2566 | {"$f10", RTYPE_FPU | 10}, \ | |
2567 | {"$f11", RTYPE_FPU | 11}, \ | |
2568 | {"$f12", RTYPE_FPU | 12}, \ | |
2569 | {"$f13", RTYPE_FPU | 13}, \ | |
2570 | {"$f14", RTYPE_FPU | 14}, \ | |
2571 | {"$f15", RTYPE_FPU | 15}, \ | |
2572 | {"$f16", RTYPE_FPU | 16}, \ | |
2573 | {"$f17", RTYPE_FPU | 17}, \ | |
2574 | {"$f18", RTYPE_FPU | 18}, \ | |
2575 | {"$f19", RTYPE_FPU | 19}, \ | |
2576 | {"$f20", RTYPE_FPU | 20}, \ | |
2577 | {"$f21", RTYPE_FPU | 21}, \ | |
2578 | {"$f22", RTYPE_FPU | 22}, \ | |
2579 | {"$f23", RTYPE_FPU | 23}, \ | |
2580 | {"$f24", RTYPE_FPU | 24}, \ | |
2581 | {"$f25", RTYPE_FPU | 25}, \ | |
2582 | {"$f26", RTYPE_FPU | 26}, \ | |
2583 | {"$f27", RTYPE_FPU | 27}, \ | |
2584 | {"$f28", RTYPE_FPU | 28}, \ | |
2585 | {"$f29", RTYPE_FPU | 29}, \ | |
2586 | {"$f30", RTYPE_FPU | 30}, \ | |
2587 | {"$f31", RTYPE_FPU | 31} | |
2588 | ||
2589 | #define FPU_CONDITION_CODE_NAMES \ | |
2590 | {"$fcc0", RTYPE_FCC | 0}, \ | |
2591 | {"$fcc1", RTYPE_FCC | 1}, \ | |
2592 | {"$fcc2", RTYPE_FCC | 2}, \ | |
2593 | {"$fcc3", RTYPE_FCC | 3}, \ | |
2594 | {"$fcc4", RTYPE_FCC | 4}, \ | |
2595 | {"$fcc5", RTYPE_FCC | 5}, \ | |
2596 | {"$fcc6", RTYPE_FCC | 6}, \ | |
2597 | {"$fcc7", RTYPE_FCC | 7} | |
2598 | ||
2599 | #define COPROC_CONDITION_CODE_NAMES \ | |
2600 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
2601 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
2602 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
2603 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
2604 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
2605 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
2606 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
2607 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
2608 | ||
2609 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
2610 | {"$a4", RTYPE_GP | 8}, \ | |
2611 | {"$a5", RTYPE_GP | 9}, \ | |
2612 | {"$a6", RTYPE_GP | 10}, \ | |
2613 | {"$a7", RTYPE_GP | 11}, \ | |
2614 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
2615 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
2616 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
2617 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
2618 | {"$t0", RTYPE_GP | 12}, \ | |
2619 | {"$t1", RTYPE_GP | 13}, \ | |
2620 | {"$t2", RTYPE_GP | 14}, \ | |
2621 | {"$t3", RTYPE_GP | 15} | |
2622 | ||
2623 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
2624 | {"$t0", RTYPE_GP | 8}, \ | |
2625 | {"$t1", RTYPE_GP | 9}, \ | |
2626 | {"$t2", RTYPE_GP | 10}, \ | |
2627 | {"$t3", RTYPE_GP | 11}, \ | |
2628 | {"$t4", RTYPE_GP | 12}, \ | |
2629 | {"$t5", RTYPE_GP | 13}, \ | |
2630 | {"$t6", RTYPE_GP | 14}, \ | |
2631 | {"$t7", RTYPE_GP | 15}, \ | |
2632 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
2633 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
2634 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
3739860c | 2635 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ |
707bfff6 TS |
2636 | |
2637 | /* Remaining symbolic register names */ | |
2638 | #define SYMBOLIC_REGISTER_NAMES \ | |
2639 | {"$zero", RTYPE_GP | 0}, \ | |
2640 | {"$at", RTYPE_GP | 1}, \ | |
2641 | {"$AT", RTYPE_GP | 1}, \ | |
2642 | {"$v0", RTYPE_GP | 2}, \ | |
2643 | {"$v1", RTYPE_GP | 3}, \ | |
2644 | {"$a0", RTYPE_GP | 4}, \ | |
2645 | {"$a1", RTYPE_GP | 5}, \ | |
2646 | {"$a2", RTYPE_GP | 6}, \ | |
2647 | {"$a3", RTYPE_GP | 7}, \ | |
2648 | {"$s0", RTYPE_GP | 16}, \ | |
2649 | {"$s1", RTYPE_GP | 17}, \ | |
2650 | {"$s2", RTYPE_GP | 18}, \ | |
2651 | {"$s3", RTYPE_GP | 19}, \ | |
2652 | {"$s4", RTYPE_GP | 20}, \ | |
2653 | {"$s5", RTYPE_GP | 21}, \ | |
2654 | {"$s6", RTYPE_GP | 22}, \ | |
2655 | {"$s7", RTYPE_GP | 23}, \ | |
2656 | {"$t8", RTYPE_GP | 24}, \ | |
2657 | {"$t9", RTYPE_GP | 25}, \ | |
2658 | {"$k0", RTYPE_GP | 26}, \ | |
2659 | {"$kt0", RTYPE_GP | 26}, \ | |
2660 | {"$k1", RTYPE_GP | 27}, \ | |
2661 | {"$kt1", RTYPE_GP | 27}, \ | |
2662 | {"$gp", RTYPE_GP | 28}, \ | |
2663 | {"$sp", RTYPE_GP | 29}, \ | |
2664 | {"$s8", RTYPE_GP | 30}, \ | |
2665 | {"$fp", RTYPE_GP | 30}, \ | |
2666 | {"$ra", RTYPE_GP | 31} | |
2667 | ||
2668 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
2669 | {"$pc", RTYPE_PC | 0} | |
2670 | ||
2671 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
2672 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
2673 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
2674 | {"$v2", RTYPE_VEC | 2}, \ | |
2675 | {"$v3", RTYPE_VEC | 3}, \ | |
2676 | {"$v4", RTYPE_VEC | 4}, \ | |
2677 | {"$v5", RTYPE_VEC | 5}, \ | |
2678 | {"$v6", RTYPE_VEC | 6}, \ | |
2679 | {"$v7", RTYPE_VEC | 7}, \ | |
2680 | {"$v8", RTYPE_VEC | 8}, \ | |
2681 | {"$v9", RTYPE_VEC | 9}, \ | |
2682 | {"$v10", RTYPE_VEC | 10}, \ | |
2683 | {"$v11", RTYPE_VEC | 11}, \ | |
2684 | {"$v12", RTYPE_VEC | 12}, \ | |
2685 | {"$v13", RTYPE_VEC | 13}, \ | |
2686 | {"$v14", RTYPE_VEC | 14}, \ | |
2687 | {"$v15", RTYPE_VEC | 15}, \ | |
2688 | {"$v16", RTYPE_VEC | 16}, \ | |
2689 | {"$v17", RTYPE_VEC | 17}, \ | |
2690 | {"$v18", RTYPE_VEC | 18}, \ | |
2691 | {"$v19", RTYPE_VEC | 19}, \ | |
2692 | {"$v20", RTYPE_VEC | 20}, \ | |
2693 | {"$v21", RTYPE_VEC | 21}, \ | |
2694 | {"$v22", RTYPE_VEC | 22}, \ | |
2695 | {"$v23", RTYPE_VEC | 23}, \ | |
2696 | {"$v24", RTYPE_VEC | 24}, \ | |
2697 | {"$v25", RTYPE_VEC | 25}, \ | |
2698 | {"$v26", RTYPE_VEC | 26}, \ | |
2699 | {"$v27", RTYPE_VEC | 27}, \ | |
2700 | {"$v28", RTYPE_VEC | 28}, \ | |
2701 | {"$v29", RTYPE_VEC | 29}, \ | |
2702 | {"$v30", RTYPE_VEC | 30}, \ | |
2703 | {"$v31", RTYPE_VEC | 31} | |
2704 | ||
14daeee3 RS |
2705 | #define R5900_I_NAMES \ |
2706 | {"$I", RTYPE_R5900_I | 0} | |
2707 | ||
2708 | #define R5900_Q_NAMES \ | |
2709 | {"$Q", RTYPE_R5900_Q | 0} | |
2710 | ||
2711 | #define R5900_R_NAMES \ | |
2712 | {"$R", RTYPE_R5900_R | 0} | |
2713 | ||
2714 | #define R5900_ACC_NAMES \ | |
2715 | {"$ACC", RTYPE_R5900_ACC | 0 } | |
2716 | ||
707bfff6 TS |
2717 | #define MIPS_DSP_ACCUMULATOR_NAMES \ |
2718 | {"$ac0", RTYPE_ACC | 0}, \ | |
2719 | {"$ac1", RTYPE_ACC | 1}, \ | |
2720 | {"$ac2", RTYPE_ACC | 2}, \ | |
2721 | {"$ac3", RTYPE_ACC | 3} | |
2722 | ||
2723 | static const struct regname reg_names[] = { | |
2724 | GENERIC_REGISTER_NUMBERS, | |
2725 | FPU_REGISTER_NAMES, | |
2726 | FPU_CONDITION_CODE_NAMES, | |
2727 | COPROC_CONDITION_CODE_NAMES, | |
2728 | ||
2729 | /* The $txx registers depends on the abi, | |
2730 | these will be added later into the symbol table from | |
3739860c | 2731 | one of the tables below once mips_abi is set after |
707bfff6 TS |
2732 | parsing of arguments from the command line. */ |
2733 | SYMBOLIC_REGISTER_NAMES, | |
2734 | ||
2735 | MIPS16_SPECIAL_REGISTER_NAMES, | |
2736 | MDMX_VECTOR_REGISTER_NAMES, | |
14daeee3 RS |
2737 | R5900_I_NAMES, |
2738 | R5900_Q_NAMES, | |
2739 | R5900_R_NAMES, | |
2740 | R5900_ACC_NAMES, | |
707bfff6 TS |
2741 | MIPS_DSP_ACCUMULATOR_NAMES, |
2742 | {0, 0} | |
2743 | }; | |
2744 | ||
2745 | static const struct regname reg_names_o32[] = { | |
2746 | O32_SYMBOLIC_REGISTER_NAMES, | |
2747 | {0, 0} | |
2748 | }; | |
2749 | ||
2750 | static const struct regname reg_names_n32n64[] = { | |
2751 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
2752 | {0, 0} | |
2753 | }; | |
2754 | ||
a92713e6 RS |
2755 | /* Register symbols $v0 and $v1 map to GPRs 2 and 3, but they can also be |
2756 | interpreted as vector registers 0 and 1. If SYMVAL is the value of one | |
2757 | of these register symbols, return the associated vector register, | |
2758 | otherwise return SYMVAL itself. */ | |
df58fc94 | 2759 | |
a92713e6 RS |
2760 | static unsigned int |
2761 | mips_prefer_vec_regno (unsigned int symval) | |
707bfff6 | 2762 | { |
a92713e6 RS |
2763 | if ((symval & -2) == (RTYPE_GP | 2)) |
2764 | return RTYPE_VEC | (symval & 1); | |
2765 | return symval; | |
2766 | } | |
2767 | ||
14daeee3 RS |
2768 | /* Return true if string [S, E) is a valid register name, storing its |
2769 | symbol value in *SYMVAL_PTR if so. */ | |
a92713e6 RS |
2770 | |
2771 | static bfd_boolean | |
14daeee3 | 2772 | mips_parse_register_1 (char *s, char *e, unsigned int *symval_ptr) |
a92713e6 | 2773 | { |
707bfff6 | 2774 | char save_c; |
14daeee3 | 2775 | symbolS *symbol; |
707bfff6 TS |
2776 | |
2777 | /* Terminate name. */ | |
2778 | save_c = *e; | |
2779 | *e = '\0'; | |
2780 | ||
a92713e6 RS |
2781 | /* Look up the name. */ |
2782 | symbol = symbol_find (s); | |
2783 | *e = save_c; | |
2784 | ||
2785 | if (!symbol || S_GET_SEGMENT (symbol) != reg_section) | |
2786 | return FALSE; | |
2787 | ||
14daeee3 RS |
2788 | *symval_ptr = S_GET_VALUE (symbol); |
2789 | return TRUE; | |
2790 | } | |
2791 | ||
2792 | /* Return true if the string at *SPTR is a valid register name. Allow it | |
2793 | to have a VU0-style channel suffix of the form x?y?z?w? if CHANNELS_PTR | |
2794 | is nonnull. | |
2795 | ||
2796 | When returning true, move *SPTR past the register, store the | |
2797 | register's symbol value in *SYMVAL_PTR and the channel mask in | |
2798 | *CHANNELS_PTR (if nonnull). The symbol value includes the register | |
2799 | number (RNUM_MASK) and register type (RTYPE_MASK). The channel mask | |
2800 | is a 4-bit value of the form XYZW and is 0 if no suffix was given. */ | |
2801 | ||
2802 | static bfd_boolean | |
2803 | mips_parse_register (char **sptr, unsigned int *symval_ptr, | |
2804 | unsigned int *channels_ptr) | |
2805 | { | |
2806 | char *s, *e, *m; | |
2807 | const char *q; | |
2808 | unsigned int channels, symval, bit; | |
2809 | ||
2810 | /* Find end of name. */ | |
2811 | s = e = *sptr; | |
2812 | if (is_name_beginner (*e)) | |
2813 | ++e; | |
2814 | while (is_part_of_name (*e)) | |
2815 | ++e; | |
2816 | ||
2817 | channels = 0; | |
2818 | if (!mips_parse_register_1 (s, e, &symval)) | |
2819 | { | |
2820 | if (!channels_ptr) | |
2821 | return FALSE; | |
2822 | ||
2823 | /* Eat characters from the end of the string that are valid | |
2824 | channel suffixes. The preceding register must be $ACC or | |
2825 | end with a digit, so there is no ambiguity. */ | |
2826 | bit = 1; | |
2827 | m = e; | |
2828 | for (q = "wzyx"; *q; q++, bit <<= 1) | |
2829 | if (m > s && m[-1] == *q) | |
2830 | { | |
2831 | --m; | |
2832 | channels |= bit; | |
2833 | } | |
2834 | ||
2835 | if (channels == 0 | |
2836 | || !mips_parse_register_1 (s, m, &symval) | |
2837 | || (symval & (RTYPE_VI | RTYPE_VF | RTYPE_R5900_ACC)) == 0) | |
2838 | return FALSE; | |
2839 | } | |
2840 | ||
a92713e6 | 2841 | *sptr = e; |
14daeee3 RS |
2842 | *symval_ptr = symval; |
2843 | if (channels_ptr) | |
2844 | *channels_ptr = channels; | |
a92713e6 RS |
2845 | return TRUE; |
2846 | } | |
2847 | ||
2848 | /* Check if SPTR points at a valid register specifier according to TYPES. | |
2849 | If so, then return 1, advance S to consume the specifier and store | |
2850 | the register's number in REGNOP, otherwise return 0. */ | |
2851 | ||
2852 | static int | |
2853 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
2854 | { | |
2855 | unsigned int regno; | |
2856 | ||
14daeee3 | 2857 | if (mips_parse_register (s, ®no, NULL)) |
707bfff6 | 2858 | { |
a92713e6 RS |
2859 | if (types & RTYPE_VEC) |
2860 | regno = mips_prefer_vec_regno (regno); | |
2861 | if (regno & types) | |
2862 | regno &= RNUM_MASK; | |
2863 | else | |
2864 | regno = ~0; | |
707bfff6 | 2865 | } |
a92713e6 | 2866 | else |
707bfff6 | 2867 | { |
a92713e6 | 2868 | if (types & RWARN) |
1661c76c | 2869 | as_warn (_("unrecognized register name `%s'"), *s); |
a92713e6 | 2870 | regno = ~0; |
707bfff6 | 2871 | } |
707bfff6 | 2872 | if (regnop) |
a92713e6 RS |
2873 | *regnop = regno; |
2874 | return regno <= RNUM_MASK; | |
707bfff6 TS |
2875 | } |
2876 | ||
14daeee3 RS |
2877 | /* Parse a VU0 "x?y?z?w?" channel mask at S and store the associated |
2878 | mask in *CHANNELS. Return a pointer to the first unconsumed character. */ | |
2879 | ||
2880 | static char * | |
2881 | mips_parse_vu0_channels (char *s, unsigned int *channels) | |
2882 | { | |
2883 | unsigned int i; | |
2884 | ||
2885 | *channels = 0; | |
2886 | for (i = 0; i < 4; i++) | |
2887 | if (*s == "xyzw"[i]) | |
2888 | { | |
2889 | *channels |= 1 << (3 - i); | |
2890 | ++s; | |
2891 | } | |
2892 | return s; | |
2893 | } | |
2894 | ||
a92713e6 RS |
2895 | /* Token types for parsed operand lists. */ |
2896 | enum mips_operand_token_type { | |
2897 | /* A plain register, e.g. $f2. */ | |
2898 | OT_REG, | |
df58fc94 | 2899 | |
14daeee3 RS |
2900 | /* A 4-bit XYZW channel mask. */ |
2901 | OT_CHANNELS, | |
2902 | ||
56d438b1 CF |
2903 | /* A constant vector index, e.g. [1]. */ |
2904 | OT_INTEGER_INDEX, | |
2905 | ||
2906 | /* A register vector index, e.g. [$2]. */ | |
2907 | OT_REG_INDEX, | |
df58fc94 | 2908 | |
a92713e6 RS |
2909 | /* A continuous range of registers, e.g. $s0-$s4. */ |
2910 | OT_REG_RANGE, | |
2911 | ||
2912 | /* A (possibly relocated) expression. */ | |
2913 | OT_INTEGER, | |
2914 | ||
2915 | /* A floating-point value. */ | |
2916 | OT_FLOAT, | |
2917 | ||
2918 | /* A single character. This can be '(', ')' or ',', but '(' only appears | |
2919 | before OT_REGs. */ | |
2920 | OT_CHAR, | |
2921 | ||
14daeee3 RS |
2922 | /* A doubled character, either "--" or "++". */ |
2923 | OT_DOUBLE_CHAR, | |
2924 | ||
a92713e6 RS |
2925 | /* The end of the operand list. */ |
2926 | OT_END | |
2927 | }; | |
2928 | ||
2929 | /* A parsed operand token. */ | |
2930 | struct mips_operand_token | |
2931 | { | |
2932 | /* The type of token. */ | |
2933 | enum mips_operand_token_type type; | |
2934 | union | |
2935 | { | |
56d438b1 | 2936 | /* The register symbol value for an OT_REG or OT_REG_INDEX. */ |
a92713e6 RS |
2937 | unsigned int regno; |
2938 | ||
14daeee3 RS |
2939 | /* The 4-bit channel mask for an OT_CHANNEL_SUFFIX. */ |
2940 | unsigned int channels; | |
2941 | ||
56d438b1 CF |
2942 | /* The integer value of an OT_INTEGER_INDEX. */ |
2943 | addressT index; | |
a92713e6 RS |
2944 | |
2945 | /* The two register symbol values involved in an OT_REG_RANGE. */ | |
2946 | struct { | |
2947 | unsigned int regno1; | |
2948 | unsigned int regno2; | |
2949 | } reg_range; | |
2950 | ||
2951 | /* The value of an OT_INTEGER. The value is represented as an | |
2952 | expression and the relocation operators that were applied to | |
2953 | that expression. The reloc entries are BFD_RELOC_UNUSED if no | |
2954 | relocation operators were used. */ | |
2955 | struct { | |
2956 | expressionS value; | |
2957 | bfd_reloc_code_real_type relocs[3]; | |
2958 | } integer; | |
2959 | ||
2960 | /* The binary data for an OT_FLOAT constant, and the number of bytes | |
2961 | in the constant. */ | |
2962 | struct { | |
2963 | unsigned char data[8]; | |
2964 | int length; | |
2965 | } flt; | |
2966 | ||
14daeee3 | 2967 | /* The character represented by an OT_CHAR or OT_DOUBLE_CHAR. */ |
a92713e6 RS |
2968 | char ch; |
2969 | } u; | |
2970 | }; | |
2971 | ||
2972 | /* An obstack used to construct lists of mips_operand_tokens. */ | |
2973 | static struct obstack mips_operand_tokens; | |
2974 | ||
2975 | /* Give TOKEN type TYPE and add it to mips_operand_tokens. */ | |
2976 | ||
2977 | static void | |
2978 | mips_add_token (struct mips_operand_token *token, | |
2979 | enum mips_operand_token_type type) | |
2980 | { | |
2981 | token->type = type; | |
2982 | obstack_grow (&mips_operand_tokens, token, sizeof (*token)); | |
2983 | } | |
2984 | ||
2985 | /* Check whether S is '(' followed by a register name. Add OT_CHAR | |
2986 | and OT_REG tokens for them if so, and return a pointer to the first | |
2987 | unconsumed character. Return null otherwise. */ | |
2988 | ||
2989 | static char * | |
2990 | mips_parse_base_start (char *s) | |
2991 | { | |
2992 | struct mips_operand_token token; | |
14daeee3 RS |
2993 | unsigned int regno, channels; |
2994 | bfd_boolean decrement_p; | |
df58fc94 | 2995 | |
a92713e6 RS |
2996 | if (*s != '(') |
2997 | return 0; | |
2998 | ||
2999 | ++s; | |
3000 | SKIP_SPACE_TABS (s); | |
14daeee3 RS |
3001 | |
3002 | /* Only match "--" as part of a base expression. In other contexts "--X" | |
3003 | is a double negative. */ | |
3004 | decrement_p = (s[0] == '-' && s[1] == '-'); | |
3005 | if (decrement_p) | |
3006 | { | |
3007 | s += 2; | |
3008 | SKIP_SPACE_TABS (s); | |
3009 | } | |
3010 | ||
3011 | /* Allow a channel specifier because that leads to better error messages | |
3012 | than treating something like "$vf0x++" as an expression. */ | |
3013 | if (!mips_parse_register (&s, ®no, &channels)) | |
a92713e6 RS |
3014 | return 0; |
3015 | ||
3016 | token.u.ch = '('; | |
3017 | mips_add_token (&token, OT_CHAR); | |
3018 | ||
14daeee3 RS |
3019 | if (decrement_p) |
3020 | { | |
3021 | token.u.ch = '-'; | |
3022 | mips_add_token (&token, OT_DOUBLE_CHAR); | |
3023 | } | |
3024 | ||
a92713e6 RS |
3025 | token.u.regno = regno; |
3026 | mips_add_token (&token, OT_REG); | |
3027 | ||
14daeee3 RS |
3028 | if (channels) |
3029 | { | |
3030 | token.u.channels = channels; | |
3031 | mips_add_token (&token, OT_CHANNELS); | |
3032 | } | |
3033 | ||
3034 | /* For consistency, only match "++" as part of base expressions too. */ | |
3035 | SKIP_SPACE_TABS (s); | |
3036 | if (s[0] == '+' && s[1] == '+') | |
3037 | { | |
3038 | s += 2; | |
3039 | token.u.ch = '+'; | |
3040 | mips_add_token (&token, OT_DOUBLE_CHAR); | |
3041 | } | |
3042 | ||
a92713e6 RS |
3043 | return s; |
3044 | } | |
3045 | ||
3046 | /* Parse one or more tokens from S. Return a pointer to the first | |
3047 | unconsumed character on success. Return null if an error was found | |
3048 | and store the error text in insn_error. FLOAT_FORMAT is as for | |
3049 | mips_parse_arguments. */ | |
3050 | ||
3051 | static char * | |
3052 | mips_parse_argument_token (char *s, char float_format) | |
3053 | { | |
6d4af3c2 AM |
3054 | char *end, *save_in; |
3055 | const char *err; | |
14daeee3 | 3056 | unsigned int regno1, regno2, channels; |
a92713e6 RS |
3057 | struct mips_operand_token token; |
3058 | ||
3059 | /* First look for "($reg", since we want to treat that as an | |
3060 | OT_CHAR and OT_REG rather than an expression. */ | |
3061 | end = mips_parse_base_start (s); | |
3062 | if (end) | |
3063 | return end; | |
3064 | ||
3065 | /* Handle other characters that end up as OT_CHARs. */ | |
3066 | if (*s == ')' || *s == ',') | |
3067 | { | |
3068 | token.u.ch = *s; | |
3069 | mips_add_token (&token, OT_CHAR); | |
3070 | ++s; | |
3071 | return s; | |
3072 | } | |
3073 | ||
3074 | /* Handle tokens that start with a register. */ | |
14daeee3 | 3075 | if (mips_parse_register (&s, ®no1, &channels)) |
df58fc94 | 3076 | { |
14daeee3 RS |
3077 | if (channels) |
3078 | { | |
3079 | /* A register and a VU0 channel suffix. */ | |
3080 | token.u.regno = regno1; | |
3081 | mips_add_token (&token, OT_REG); | |
3082 | ||
3083 | token.u.channels = channels; | |
3084 | mips_add_token (&token, OT_CHANNELS); | |
3085 | return s; | |
3086 | } | |
3087 | ||
a92713e6 RS |
3088 | SKIP_SPACE_TABS (s); |
3089 | if (*s == '-') | |
df58fc94 | 3090 | { |
a92713e6 RS |
3091 | /* A register range. */ |
3092 | ++s; | |
3093 | SKIP_SPACE_TABS (s); | |
14daeee3 | 3094 | if (!mips_parse_register (&s, ®no2, NULL)) |
a92713e6 | 3095 | { |
1661c76c | 3096 | set_insn_error (0, _("invalid register range")); |
a92713e6 RS |
3097 | return 0; |
3098 | } | |
df58fc94 | 3099 | |
a92713e6 RS |
3100 | token.u.reg_range.regno1 = regno1; |
3101 | token.u.reg_range.regno2 = regno2; | |
3102 | mips_add_token (&token, OT_REG_RANGE); | |
3103 | return s; | |
3104 | } | |
a92713e6 | 3105 | |
56d438b1 CF |
3106 | /* Add the register itself. */ |
3107 | token.u.regno = regno1; | |
3108 | mips_add_token (&token, OT_REG); | |
3109 | ||
3110 | /* Check for a vector index. */ | |
3111 | if (*s == '[') | |
3112 | { | |
a92713e6 RS |
3113 | ++s; |
3114 | SKIP_SPACE_TABS (s); | |
56d438b1 CF |
3115 | if (mips_parse_register (&s, &token.u.regno, NULL)) |
3116 | mips_add_token (&token, OT_REG_INDEX); | |
3117 | else | |
a92713e6 | 3118 | { |
56d438b1 CF |
3119 | expressionS element; |
3120 | ||
3121 | my_getExpression (&element, s); | |
3122 | if (element.X_op != O_constant) | |
3123 | { | |
3124 | set_insn_error (0, _("vector element must be constant")); | |
3125 | return 0; | |
3126 | } | |
3127 | s = expr_end; | |
3128 | token.u.index = element.X_add_number; | |
3129 | mips_add_token (&token, OT_INTEGER_INDEX); | |
a92713e6 | 3130 | } |
a92713e6 RS |
3131 | SKIP_SPACE_TABS (s); |
3132 | if (*s != ']') | |
3133 | { | |
1661c76c | 3134 | set_insn_error (0, _("missing `]'")); |
a92713e6 RS |
3135 | return 0; |
3136 | } | |
3137 | ++s; | |
df58fc94 | 3138 | } |
a92713e6 | 3139 | return s; |
df58fc94 RS |
3140 | } |
3141 | ||
a92713e6 RS |
3142 | if (float_format) |
3143 | { | |
3144 | /* First try to treat expressions as floats. */ | |
3145 | save_in = input_line_pointer; | |
3146 | input_line_pointer = s; | |
3147 | err = md_atof (float_format, (char *) token.u.flt.data, | |
3148 | &token.u.flt.length); | |
3149 | end = input_line_pointer; | |
3150 | input_line_pointer = save_in; | |
3151 | if (err && *err) | |
3152 | { | |
e3de51ce | 3153 | set_insn_error (0, err); |
a92713e6 RS |
3154 | return 0; |
3155 | } | |
3156 | if (s != end) | |
3157 | { | |
3158 | mips_add_token (&token, OT_FLOAT); | |
3159 | return end; | |
3160 | } | |
3161 | } | |
3162 | ||
3163 | /* Treat everything else as an integer expression. */ | |
3164 | token.u.integer.relocs[0] = BFD_RELOC_UNUSED; | |
3165 | token.u.integer.relocs[1] = BFD_RELOC_UNUSED; | |
3166 | token.u.integer.relocs[2] = BFD_RELOC_UNUSED; | |
3167 | my_getSmallExpression (&token.u.integer.value, token.u.integer.relocs, s); | |
3168 | s = expr_end; | |
3169 | mips_add_token (&token, OT_INTEGER); | |
3170 | return s; | |
3171 | } | |
3172 | ||
3173 | /* S points to the operand list for an instruction. FLOAT_FORMAT is 'f' | |
3174 | if expressions should be treated as 32-bit floating-point constants, | |
3175 | 'd' if they should be treated as 64-bit floating-point constants, | |
3176 | or 0 if they should be treated as integer expressions (the usual case). | |
3177 | ||
3178 | Return a list of tokens on success, otherwise return 0. The caller | |
3179 | must obstack_free the list after use. */ | |
3180 | ||
3181 | static struct mips_operand_token * | |
3182 | mips_parse_arguments (char *s, char float_format) | |
3183 | { | |
3184 | struct mips_operand_token token; | |
3185 | ||
3186 | SKIP_SPACE_TABS (s); | |
3187 | while (*s) | |
3188 | { | |
3189 | s = mips_parse_argument_token (s, float_format); | |
3190 | if (!s) | |
3191 | { | |
3192 | obstack_free (&mips_operand_tokens, | |
3193 | obstack_finish (&mips_operand_tokens)); | |
3194 | return 0; | |
3195 | } | |
3196 | SKIP_SPACE_TABS (s); | |
3197 | } | |
3198 | mips_add_token (&token, OT_END); | |
3199 | return (struct mips_operand_token *) obstack_finish (&mips_operand_tokens); | |
df58fc94 RS |
3200 | } |
3201 | ||
d301a56b RS |
3202 | /* Return TRUE if opcode MO is valid on the currently selected ISA, ASE |
3203 | and architecture. Use is_opcode_valid_16 for MIPS16 opcodes. */ | |
037b32b9 AN |
3204 | |
3205 | static bfd_boolean | |
f79e2745 | 3206 | is_opcode_valid (const struct mips_opcode *mo) |
037b32b9 AN |
3207 | { |
3208 | int isa = mips_opts.isa; | |
846ef2d0 | 3209 | int ase = mips_opts.ase; |
037b32b9 | 3210 | int fp_s, fp_d; |
c6278170 | 3211 | unsigned int i; |
037b32b9 | 3212 | |
c6278170 RS |
3213 | if (ISA_HAS_64BIT_REGS (mips_opts.isa)) |
3214 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
3215 | if ((ase & mips_ases[i].flags) == mips_ases[i].flags) | |
3216 | ase |= mips_ases[i].flags64; | |
037b32b9 | 3217 | |
d301a56b | 3218 | if (!opcode_is_member (mo, isa, ase, mips_opts.arch)) |
037b32b9 AN |
3219 | return FALSE; |
3220 | ||
3221 | /* Check whether the instruction or macro requires single-precision or | |
3222 | double-precision floating-point support. Note that this information is | |
3223 | stored differently in the opcode table for insns and macros. */ | |
3224 | if (mo->pinfo == INSN_MACRO) | |
3225 | { | |
3226 | fp_s = mo->pinfo2 & INSN2_M_FP_S; | |
3227 | fp_d = mo->pinfo2 & INSN2_M_FP_D; | |
3228 | } | |
3229 | else | |
3230 | { | |
3231 | fp_s = mo->pinfo & FP_S; | |
3232 | fp_d = mo->pinfo & FP_D; | |
3233 | } | |
3234 | ||
3235 | if (fp_d && (mips_opts.soft_float || mips_opts.single_float)) | |
3236 | return FALSE; | |
3237 | ||
3238 | if (fp_s && mips_opts.soft_float) | |
3239 | return FALSE; | |
3240 | ||
3241 | return TRUE; | |
3242 | } | |
3243 | ||
3244 | /* Return TRUE if the MIPS16 opcode MO is valid on the currently | |
3245 | selected ISA and architecture. */ | |
3246 | ||
3247 | static bfd_boolean | |
3248 | is_opcode_valid_16 (const struct mips_opcode *mo) | |
3249 | { | |
d301a56b | 3250 | return opcode_is_member (mo, mips_opts.isa, 0, mips_opts.arch); |
037b32b9 AN |
3251 | } |
3252 | ||
df58fc94 RS |
3253 | /* Return TRUE if the size of the microMIPS opcode MO matches one |
3254 | explicitly requested. Always TRUE in the standard MIPS mode. */ | |
3255 | ||
3256 | static bfd_boolean | |
3257 | is_size_valid (const struct mips_opcode *mo) | |
3258 | { | |
3259 | if (!mips_opts.micromips) | |
3260 | return TRUE; | |
3261 | ||
833794fc MR |
3262 | if (mips_opts.insn32) |
3263 | { | |
3264 | if (mo->pinfo != INSN_MACRO && micromips_insn_length (mo) != 4) | |
3265 | return FALSE; | |
3266 | if ((mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0) | |
3267 | return FALSE; | |
3268 | } | |
df58fc94 RS |
3269 | if (!forced_insn_length) |
3270 | return TRUE; | |
3271 | if (mo->pinfo == INSN_MACRO) | |
3272 | return FALSE; | |
3273 | return forced_insn_length == micromips_insn_length (mo); | |
3274 | } | |
3275 | ||
3276 | /* Return TRUE if the microMIPS opcode MO is valid for the delay slot | |
e64af278 MR |
3277 | of the preceding instruction. Always TRUE in the standard MIPS mode. |
3278 | ||
3279 | We don't accept macros in 16-bit delay slots to avoid a case where | |
3280 | a macro expansion fails because it relies on a preceding 32-bit real | |
3281 | instruction to have matched and does not handle the operands correctly. | |
3282 | The only macros that may expand to 16-bit instructions are JAL that | |
3283 | cannot be placed in a delay slot anyway, and corner cases of BALIGN | |
3284 | and BGT (that likewise cannot be placed in a delay slot) that decay to | |
3285 | a NOP. In all these cases the macros precede any corresponding real | |
3286 | instruction definitions in the opcode table, so they will match in the | |
3287 | second pass where the size of the delay slot is ignored and therefore | |
3288 | produce correct code. */ | |
df58fc94 RS |
3289 | |
3290 | static bfd_boolean | |
3291 | is_delay_slot_valid (const struct mips_opcode *mo) | |
3292 | { | |
3293 | if (!mips_opts.micromips) | |
3294 | return TRUE; | |
3295 | ||
3296 | if (mo->pinfo == INSN_MACRO) | |
c06dec14 | 3297 | return (history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) == 0; |
df58fc94 RS |
3298 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 |
3299 | && micromips_insn_length (mo) != 4) | |
3300 | return FALSE; | |
3301 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
3302 | && micromips_insn_length (mo) != 2) | |
3303 | return FALSE; | |
3304 | ||
3305 | return TRUE; | |
3306 | } | |
3307 | ||
fc76e730 RS |
3308 | /* For consistency checking, verify that all bits of OPCODE are specified |
3309 | either by the match/mask part of the instruction definition, or by the | |
3310 | operand list. Also build up a list of operands in OPERANDS. | |
3311 | ||
3312 | INSN_BITS says which bits of the instruction are significant. | |
3313 | If OPCODE is a standard or microMIPS instruction, DECODE_OPERAND | |
3314 | provides the mips_operand description of each operand. DECODE_OPERAND | |
3315 | is null for MIPS16 instructions. */ | |
ab902481 RS |
3316 | |
3317 | static int | |
3318 | validate_mips_insn (const struct mips_opcode *opcode, | |
3319 | unsigned long insn_bits, | |
fc76e730 RS |
3320 | const struct mips_operand *(*decode_operand) (const char *), |
3321 | struct mips_operand_array *operands) | |
ab902481 RS |
3322 | { |
3323 | const char *s; | |
fc76e730 | 3324 | unsigned long used_bits, doubled, undefined, opno, mask; |
ab902481 RS |
3325 | const struct mips_operand *operand; |
3326 | ||
fc76e730 RS |
3327 | mask = (opcode->pinfo == INSN_MACRO ? 0 : opcode->mask); |
3328 | if ((mask & opcode->match) != opcode->match) | |
ab902481 RS |
3329 | { |
3330 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
3331 | opcode->name, opcode->args); | |
3332 | return 0; | |
3333 | } | |
3334 | used_bits = 0; | |
fc76e730 | 3335 | opno = 0; |
14daeee3 RS |
3336 | if (opcode->pinfo2 & INSN2_VU0_CHANNEL_SUFFIX) |
3337 | used_bits = mips_insert_operand (&mips_vu0_channel_mask, used_bits, -1); | |
ab902481 RS |
3338 | for (s = opcode->args; *s; ++s) |
3339 | switch (*s) | |
3340 | { | |
3341 | case ',': | |
3342 | case '(': | |
3343 | case ')': | |
3344 | break; | |
3345 | ||
14daeee3 RS |
3346 | case '#': |
3347 | s++; | |
3348 | break; | |
3349 | ||
ab902481 | 3350 | default: |
fc76e730 RS |
3351 | if (!decode_operand) |
3352 | operand = decode_mips16_operand (*s, FALSE); | |
3353 | else | |
3354 | operand = decode_operand (s); | |
3355 | if (!operand && opcode->pinfo != INSN_MACRO) | |
ab902481 RS |
3356 | { |
3357 | as_bad (_("internal: unknown operand type: %s %s"), | |
3358 | opcode->name, opcode->args); | |
3359 | return 0; | |
3360 | } | |
fc76e730 RS |
3361 | gas_assert (opno < MAX_OPERANDS); |
3362 | operands->operand[opno] = operand; | |
14daeee3 | 3363 | if (operand && operand->type != OP_VU0_MATCH_SUFFIX) |
fc76e730 | 3364 | { |
14daeee3 | 3365 | used_bits = mips_insert_operand (operand, used_bits, -1); |
fc76e730 RS |
3366 | if (operand->type == OP_MDMX_IMM_REG) |
3367 | /* Bit 5 is the format selector (OB vs QH). The opcode table | |
3368 | has separate entries for each format. */ | |
3369 | used_bits &= ~(1 << (operand->lsb + 5)); | |
3370 | if (operand->type == OP_ENTRY_EXIT_LIST) | |
3371 | used_bits &= ~(mask & 0x700); | |
3372 | } | |
ab902481 | 3373 | /* Skip prefix characters. */ |
7361da2c | 3374 | if (decode_operand && (*s == '+' || *s == 'm' || *s == '-')) |
ab902481 | 3375 | ++s; |
fc76e730 | 3376 | opno += 1; |
ab902481 RS |
3377 | break; |
3378 | } | |
fc76e730 | 3379 | doubled = used_bits & mask & insn_bits; |
ab902481 RS |
3380 | if (doubled) |
3381 | { | |
3382 | as_bad (_("internal: bad mips opcode (bits 0x%08lx doubly defined):" | |
3383 | " %s %s"), doubled, opcode->name, opcode->args); | |
3384 | return 0; | |
3385 | } | |
fc76e730 | 3386 | used_bits |= mask; |
ab902481 | 3387 | undefined = ~used_bits & insn_bits; |
fc76e730 | 3388 | if (opcode->pinfo != INSN_MACRO && undefined) |
ab902481 RS |
3389 | { |
3390 | as_bad (_("internal: bad mips opcode (bits 0x%08lx undefined): %s %s"), | |
3391 | undefined, opcode->name, opcode->args); | |
3392 | return 0; | |
3393 | } | |
3394 | used_bits &= ~insn_bits; | |
3395 | if (used_bits) | |
3396 | { | |
3397 | as_bad (_("internal: bad mips opcode (bits 0x%08lx defined): %s %s"), | |
3398 | used_bits, opcode->name, opcode->args); | |
3399 | return 0; | |
3400 | } | |
3401 | return 1; | |
3402 | } | |
3403 | ||
fc76e730 RS |
3404 | /* The MIPS16 version of validate_mips_insn. */ |
3405 | ||
3406 | static int | |
3407 | validate_mips16_insn (const struct mips_opcode *opcode, | |
3408 | struct mips_operand_array *operands) | |
3409 | { | |
3410 | if (opcode->args[0] == 'a' || opcode->args[0] == 'i') | |
3411 | { | |
3412 | /* In this case OPCODE defines the first 16 bits in a 32-bit jump | |
3413 | instruction. Use TMP to describe the full instruction. */ | |
3414 | struct mips_opcode tmp; | |
3415 | ||
3416 | tmp = *opcode; | |
3417 | tmp.match <<= 16; | |
3418 | tmp.mask <<= 16; | |
3419 | return validate_mips_insn (&tmp, 0xffffffff, 0, operands); | |
3420 | } | |
3421 | return validate_mips_insn (opcode, 0xffff, 0, operands); | |
3422 | } | |
3423 | ||
ab902481 RS |
3424 | /* The microMIPS version of validate_mips_insn. */ |
3425 | ||
3426 | static int | |
fc76e730 RS |
3427 | validate_micromips_insn (const struct mips_opcode *opc, |
3428 | struct mips_operand_array *operands) | |
ab902481 RS |
3429 | { |
3430 | unsigned long insn_bits; | |
3431 | unsigned long major; | |
3432 | unsigned int length; | |
3433 | ||
fc76e730 RS |
3434 | if (opc->pinfo == INSN_MACRO) |
3435 | return validate_mips_insn (opc, 0xffffffff, decode_micromips_operand, | |
3436 | operands); | |
3437 | ||
ab902481 RS |
3438 | length = micromips_insn_length (opc); |
3439 | if (length != 2 && length != 4) | |
3440 | { | |
1661c76c | 3441 | as_bad (_("internal error: bad microMIPS opcode (incorrect length: %u): " |
ab902481 RS |
3442 | "%s %s"), length, opc->name, opc->args); |
3443 | return 0; | |
3444 | } | |
3445 | major = opc->match >> (10 + 8 * (length - 2)); | |
3446 | if ((length == 2 && (major & 7) != 1 && (major & 6) != 2) | |
3447 | || (length == 4 && (major & 7) != 0 && (major & 4) != 4)) | |
3448 | { | |
1661c76c | 3449 | as_bad (_("internal error: bad microMIPS opcode " |
ab902481 RS |
3450 | "(opcode/length mismatch): %s %s"), opc->name, opc->args); |
3451 | return 0; | |
3452 | } | |
3453 | ||
3454 | /* Shift piecewise to avoid an overflow where unsigned long is 32-bit. */ | |
3455 | insn_bits = 1 << 4 * length; | |
3456 | insn_bits <<= 4 * length; | |
3457 | insn_bits -= 1; | |
fc76e730 RS |
3458 | return validate_mips_insn (opc, insn_bits, decode_micromips_operand, |
3459 | operands); | |
ab902481 RS |
3460 | } |
3461 | ||
707bfff6 TS |
3462 | /* This function is called once, at assembler startup time. It should set up |
3463 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 3464 | |
252b5132 | 3465 | void |
17a2f251 | 3466 | md_begin (void) |
252b5132 | 3467 | { |
3994f87e | 3468 | const char *retval = NULL; |
156c2f8b | 3469 | int i = 0; |
252b5132 | 3470 | int broken = 0; |
1f25f5d3 | 3471 | |
0a44bf69 RS |
3472 | if (mips_pic != NO_PIC) |
3473 | { | |
3474 | if (g_switch_seen && g_switch_value != 0) | |
3475 | as_bad (_("-G may not be used in position-independent code")); | |
3476 | g_switch_value = 0; | |
3477 | } | |
00acd688 CM |
3478 | else if (mips_abicalls) |
3479 | { | |
3480 | if (g_switch_seen && g_switch_value != 0) | |
3481 | as_bad (_("-G may not be used with abicalls")); | |
3482 | g_switch_value = 0; | |
3483 | } | |
0a44bf69 | 3484 | |
0b35dfee | 3485 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_opts.arch)) |
1661c76c | 3486 | as_warn (_("could not set architecture and machine")); |
252b5132 | 3487 | |
252b5132 RH |
3488 | op_hash = hash_new (); |
3489 | ||
fc76e730 | 3490 | mips_operands = XCNEWVEC (struct mips_operand_array, NUMOPCODES); |
252b5132 RH |
3491 | for (i = 0; i < NUMOPCODES;) |
3492 | { | |
3493 | const char *name = mips_opcodes[i].name; | |
3494 | ||
17a2f251 | 3495 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
3496 | if (retval != NULL) |
3497 | { | |
3498 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
3499 | mips_opcodes[i].name, retval); | |
3500 | /* Probably a memory allocation problem? Give up now. */ | |
1661c76c | 3501 | as_fatal (_("broken assembler, no assembly attempted")); |
252b5132 RH |
3502 | } |
3503 | do | |
3504 | { | |
fc76e730 RS |
3505 | if (!validate_mips_insn (&mips_opcodes[i], 0xffffffff, |
3506 | decode_mips_operand, &mips_operands[i])) | |
3507 | broken = 1; | |
3508 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) | |
252b5132 | 3509 | { |
fc76e730 RS |
3510 | create_insn (&nop_insn, mips_opcodes + i); |
3511 | if (mips_fix_loongson2f_nop) | |
3512 | nop_insn.insn_opcode = LOONGSON2F_NOP_INSN; | |
3513 | nop_insn.fixed_p = 1; | |
252b5132 RH |
3514 | } |
3515 | ++i; | |
3516 | } | |
3517 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
3518 | } | |
3519 | ||
3520 | mips16_op_hash = hash_new (); | |
fc76e730 RS |
3521 | mips16_operands = XCNEWVEC (struct mips_operand_array, |
3522 | bfd_mips16_num_opcodes); | |
252b5132 RH |
3523 | |
3524 | i = 0; | |
3525 | while (i < bfd_mips16_num_opcodes) | |
3526 | { | |
3527 | const char *name = mips16_opcodes[i].name; | |
3528 | ||
17a2f251 | 3529 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
3530 | if (retval != NULL) |
3531 | as_fatal (_("internal: can't hash `%s': %s"), | |
3532 | mips16_opcodes[i].name, retval); | |
3533 | do | |
3534 | { | |
fc76e730 RS |
3535 | if (!validate_mips16_insn (&mips16_opcodes[i], &mips16_operands[i])) |
3536 | broken = 1; | |
1e915849 RS |
3537 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
3538 | { | |
3539 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
3540 | mips16_nop_insn.fixed_p = 1; | |
3541 | } | |
252b5132 RH |
3542 | ++i; |
3543 | } | |
3544 | while (i < bfd_mips16_num_opcodes | |
3545 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
3546 | } | |
3547 | ||
df58fc94 | 3548 | micromips_op_hash = hash_new (); |
fc76e730 RS |
3549 | micromips_operands = XCNEWVEC (struct mips_operand_array, |
3550 | bfd_micromips_num_opcodes); | |
df58fc94 RS |
3551 | |
3552 | i = 0; | |
3553 | while (i < bfd_micromips_num_opcodes) | |
3554 | { | |
3555 | const char *name = micromips_opcodes[i].name; | |
3556 | ||
3557 | retval = hash_insert (micromips_op_hash, name, | |
3558 | (void *) µmips_opcodes[i]); | |
3559 | if (retval != NULL) | |
3560 | as_fatal (_("internal: can't hash `%s': %s"), | |
3561 | micromips_opcodes[i].name, retval); | |
3562 | do | |
fc76e730 RS |
3563 | { |
3564 | struct mips_cl_insn *micromips_nop_insn; | |
3565 | ||
3566 | if (!validate_micromips_insn (µmips_opcodes[i], | |
3567 | µmips_operands[i])) | |
3568 | broken = 1; | |
3569 | ||
3570 | if (micromips_opcodes[i].pinfo != INSN_MACRO) | |
3571 | { | |
3572 | if (micromips_insn_length (micromips_opcodes + i) == 2) | |
3573 | micromips_nop_insn = µmips_nop16_insn; | |
3574 | else if (micromips_insn_length (micromips_opcodes + i) == 4) | |
3575 | micromips_nop_insn = µmips_nop32_insn; | |
3576 | else | |
3577 | continue; | |
3578 | ||
3579 | if (micromips_nop_insn->insn_mo == NULL | |
3580 | && strcmp (name, "nop") == 0) | |
3581 | { | |
3582 | create_insn (micromips_nop_insn, micromips_opcodes + i); | |
3583 | micromips_nop_insn->fixed_p = 1; | |
3584 | } | |
3585 | } | |
3586 | } | |
df58fc94 RS |
3587 | while (++i < bfd_micromips_num_opcodes |
3588 | && strcmp (micromips_opcodes[i].name, name) == 0); | |
3589 | } | |
3590 | ||
252b5132 | 3591 | if (broken) |
1661c76c | 3592 | as_fatal (_("broken assembler, no assembly attempted")); |
252b5132 RH |
3593 | |
3594 | /* We add all the general register names to the symbol table. This | |
3595 | helps us detect invalid uses of them. */ | |
3739860c | 3596 | for (i = 0; reg_names[i].name; i++) |
707bfff6 | 3597 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, |
8fc4ee9b | 3598 | reg_names[i].num, /* & RNUM_MASK, */ |
707bfff6 TS |
3599 | &zero_address_frag)); |
3600 | if (HAVE_NEWABI) | |
3739860c | 3601 | for (i = 0; reg_names_n32n64[i].name; i++) |
707bfff6 | 3602 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, |
8fc4ee9b | 3603 | reg_names_n32n64[i].num, /* & RNUM_MASK, */ |
252b5132 | 3604 | &zero_address_frag)); |
707bfff6 | 3605 | else |
3739860c | 3606 | for (i = 0; reg_names_o32[i].name; i++) |
707bfff6 | 3607 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, |
8fc4ee9b | 3608 | reg_names_o32[i].num, /* & RNUM_MASK, */ |
6047c971 | 3609 | &zero_address_frag)); |
6047c971 | 3610 | |
14daeee3 RS |
3611 | for (i = 0; i < 32; i++) |
3612 | { | |
92fce9bd | 3613 | char regname[6]; |
14daeee3 RS |
3614 | |
3615 | /* R5900 VU0 floating-point register. */ | |
92fce9bd | 3616 | sprintf (regname, "$vf%d", i); |
14daeee3 RS |
3617 | symbol_table_insert (symbol_new (regname, reg_section, |
3618 | RTYPE_VF | i, &zero_address_frag)); | |
3619 | ||
3620 | /* R5900 VU0 integer register. */ | |
92fce9bd | 3621 | sprintf (regname, "$vi%d", i); |
14daeee3 RS |
3622 | symbol_table_insert (symbol_new (regname, reg_section, |
3623 | RTYPE_VI | i, &zero_address_frag)); | |
3624 | ||
56d438b1 | 3625 | /* MSA register. */ |
92fce9bd | 3626 | sprintf (regname, "$w%d", i); |
56d438b1 CF |
3627 | symbol_table_insert (symbol_new (regname, reg_section, |
3628 | RTYPE_MSA | i, &zero_address_frag)); | |
14daeee3 RS |
3629 | } |
3630 | ||
a92713e6 RS |
3631 | obstack_init (&mips_operand_tokens); |
3632 | ||
7d10b47d | 3633 | mips_no_prev_insn (); |
252b5132 RH |
3634 | |
3635 | mips_gprmask = 0; | |
3636 | mips_cprmask[0] = 0; | |
3637 | mips_cprmask[1] = 0; | |
3638 | mips_cprmask[2] = 0; | |
3639 | mips_cprmask[3] = 0; | |
3640 | ||
3641 | /* set the default alignment for the text section (2**2) */ | |
3642 | record_alignment (text_section, 2); | |
3643 | ||
4d0d148d | 3644 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 3645 | |
f3ded42a RS |
3646 | /* On a native system other than VxWorks, sections must be aligned |
3647 | to 16 byte boundaries. When configured for an embedded ELF | |
3648 | target, we don't bother. */ | |
3649 | if (strncmp (TARGET_OS, "elf", 3) != 0 | |
3650 | && strncmp (TARGET_OS, "vxworks", 7) != 0) | |
252b5132 | 3651 | { |
f3ded42a RS |
3652 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); |
3653 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
3654 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
3655 | } | |
252b5132 | 3656 | |
f3ded42a RS |
3657 | /* Create a .reginfo section for register masks and a .mdebug |
3658 | section for debugging information. */ | |
3659 | { | |
3660 | segT seg; | |
3661 | subsegT subseg; | |
3662 | flagword flags; | |
3663 | segT sec; | |
3664 | ||
3665 | seg = now_seg; | |
3666 | subseg = now_subseg; | |
3667 | ||
3668 | /* The ABI says this section should be loaded so that the | |
3669 | running program can access it. However, we don't load it | |
3670 | if we are configured for an embedded target */ | |
3671 | flags = SEC_READONLY | SEC_DATA; | |
3672 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
3673 | flags |= SEC_ALLOC | SEC_LOAD; | |
3674 | ||
3675 | if (mips_abi != N64_ABI) | |
252b5132 | 3676 | { |
f3ded42a | 3677 | sec = subseg_new (".reginfo", (subsegT) 0); |
bdaaa2e1 | 3678 | |
f3ded42a RS |
3679 | bfd_set_section_flags (stdoutput, sec, flags); |
3680 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
252b5132 | 3681 | |
f3ded42a RS |
3682 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
3683 | } | |
3684 | else | |
3685 | { | |
3686 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
3687 | .reginfo section. */ | |
3688 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
3689 | bfd_set_section_flags (stdoutput, sec, flags); | |
3690 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 3691 | |
f3ded42a RS |
3692 | /* Set up the option header. */ |
3693 | { | |
3694 | Elf_Internal_Options opthdr; | |
3695 | char *f; | |
3696 | ||
3697 | opthdr.kind = ODK_REGINFO; | |
3698 | opthdr.size = (sizeof (Elf_External_Options) | |
3699 | + sizeof (Elf64_External_RegInfo)); | |
3700 | opthdr.section = 0; | |
3701 | opthdr.info = 0; | |
3702 | f = frag_more (sizeof (Elf_External_Options)); | |
3703 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
3704 | (Elf_External_Options *) f); | |
3705 | ||
3706 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
3707 | } | |
3708 | } | |
252b5132 | 3709 | |
351cdf24 MF |
3710 | sec = subseg_new (".MIPS.abiflags", (subsegT) 0); |
3711 | bfd_set_section_flags (stdoutput, sec, | |
3712 | SEC_READONLY | SEC_DATA | SEC_ALLOC | SEC_LOAD); | |
3713 | bfd_set_section_alignment (stdoutput, sec, 3); | |
3714 | mips_flags_frag = frag_more (sizeof (Elf_External_ABIFlags_v0)); | |
3715 | ||
f3ded42a RS |
3716 | if (ECOFF_DEBUGGING) |
3717 | { | |
3718 | sec = subseg_new (".mdebug", (subsegT) 0); | |
3719 | (void) bfd_set_section_flags (stdoutput, sec, | |
3720 | SEC_HAS_CONTENTS | SEC_READONLY); | |
3721 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
252b5132 | 3722 | } |
f3ded42a RS |
3723 | else if (mips_flag_pdr) |
3724 | { | |
3725 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
3726 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
3727 | SEC_READONLY | SEC_RELOC | |
3728 | | SEC_DEBUGGING); | |
3729 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
3730 | } | |
3731 | ||
3732 | subseg_set (seg, subseg); | |
3733 | } | |
252b5132 | 3734 | |
71400594 RS |
3735 | if (mips_fix_vr4120) |
3736 | init_vr4120_conflicts (); | |
252b5132 RH |
3737 | } |
3738 | ||
351cdf24 MF |
3739 | static inline void |
3740 | fpabi_incompatible_with (int fpabi, const char *what) | |
3741 | { | |
3742 | as_warn (_(".gnu_attribute %d,%d is incompatible with `%s'"), | |
3743 | Tag_GNU_MIPS_ABI_FP, fpabi, what); | |
3744 | } | |
3745 | ||
3746 | static inline void | |
3747 | fpabi_requires (int fpabi, const char *what) | |
3748 | { | |
3749 | as_warn (_(".gnu_attribute %d,%d requires `%s'"), | |
3750 | Tag_GNU_MIPS_ABI_FP, fpabi, what); | |
3751 | } | |
3752 | ||
3753 | /* Check -mabi and register sizes against the specified FP ABI. */ | |
3754 | static void | |
3755 | check_fpabi (int fpabi) | |
3756 | { | |
351cdf24 MF |
3757 | switch (fpabi) |
3758 | { | |
3759 | case Val_GNU_MIPS_ABI_FP_DOUBLE: | |
ea79f94a MF |
3760 | if (file_mips_opts.soft_float) |
3761 | fpabi_incompatible_with (fpabi, "softfloat"); | |
3762 | else if (file_mips_opts.single_float) | |
3763 | fpabi_incompatible_with (fpabi, "singlefloat"); | |
351cdf24 MF |
3764 | if (file_mips_opts.gp == 64 && file_mips_opts.fp == 32) |
3765 | fpabi_incompatible_with (fpabi, "gp=64 fp=32"); | |
3766 | else if (file_mips_opts.gp == 32 && file_mips_opts.fp == 64) | |
3767 | fpabi_incompatible_with (fpabi, "gp=32 fp=64"); | |
351cdf24 MF |
3768 | break; |
3769 | ||
3770 | case Val_GNU_MIPS_ABI_FP_XX: | |
3771 | if (mips_abi != O32_ABI) | |
3772 | fpabi_requires (fpabi, "-mabi=32"); | |
ea79f94a MF |
3773 | else if (file_mips_opts.soft_float) |
3774 | fpabi_incompatible_with (fpabi, "softfloat"); | |
3775 | else if (file_mips_opts.single_float) | |
3776 | fpabi_incompatible_with (fpabi, "singlefloat"); | |
351cdf24 MF |
3777 | else if (file_mips_opts.fp != 0) |
3778 | fpabi_requires (fpabi, "fp=xx"); | |
351cdf24 MF |
3779 | break; |
3780 | ||
3781 | case Val_GNU_MIPS_ABI_FP_64A: | |
3782 | case Val_GNU_MIPS_ABI_FP_64: | |
3783 | if (mips_abi != O32_ABI) | |
3784 | fpabi_requires (fpabi, "-mabi=32"); | |
ea79f94a MF |
3785 | else if (file_mips_opts.soft_float) |
3786 | fpabi_incompatible_with (fpabi, "softfloat"); | |
3787 | else if (file_mips_opts.single_float) | |
3788 | fpabi_incompatible_with (fpabi, "singlefloat"); | |
351cdf24 MF |
3789 | else if (file_mips_opts.fp != 64) |
3790 | fpabi_requires (fpabi, "fp=64"); | |
3791 | else if (fpabi == Val_GNU_MIPS_ABI_FP_64 && !file_mips_opts.oddspreg) | |
3792 | fpabi_incompatible_with (fpabi, "nooddspreg"); | |
3793 | else if (fpabi == Val_GNU_MIPS_ABI_FP_64A && file_mips_opts.oddspreg) | |
3794 | fpabi_requires (fpabi, "nooddspreg"); | |
351cdf24 MF |
3795 | break; |
3796 | ||
3797 | case Val_GNU_MIPS_ABI_FP_SINGLE: | |
3798 | if (file_mips_opts.soft_float) | |
3799 | fpabi_incompatible_with (fpabi, "softfloat"); | |
3800 | else if (!file_mips_opts.single_float) | |
3801 | fpabi_requires (fpabi, "singlefloat"); | |
3802 | break; | |
3803 | ||
3804 | case Val_GNU_MIPS_ABI_FP_SOFT: | |
3805 | if (!file_mips_opts.soft_float) | |
3806 | fpabi_requires (fpabi, "softfloat"); | |
3807 | break; | |
3808 | ||
3809 | case Val_GNU_MIPS_ABI_FP_OLD_64: | |
3810 | as_warn (_(".gnu_attribute %d,%d is no longer supported"), | |
3811 | Tag_GNU_MIPS_ABI_FP, fpabi); | |
3812 | break; | |
3813 | ||
3350cc01 CM |
3814 | case Val_GNU_MIPS_ABI_FP_NAN2008: |
3815 | /* Silently ignore compatibility value. */ | |
3816 | break; | |
3817 | ||
351cdf24 MF |
3818 | default: |
3819 | as_warn (_(".gnu_attribute %d,%d is not a recognized" | |
3820 | " floating-point ABI"), Tag_GNU_MIPS_ABI_FP, fpabi); | |
3821 | break; | |
3822 | } | |
351cdf24 MF |
3823 | } |
3824 | ||
919731af | 3825 | /* Perform consistency checks on the current options. */ |
3826 | ||
3827 | static void | |
3828 | mips_check_options (struct mips_set_options *opts, bfd_boolean abi_checks) | |
3829 | { | |
3830 | /* Check the size of integer registers agrees with the ABI and ISA. */ | |
3831 | if (opts->gp == 64 && !ISA_HAS_64BIT_REGS (opts->isa)) | |
3832 | as_bad (_("`gp=64' used with a 32-bit processor")); | |
3833 | else if (abi_checks | |
3834 | && opts->gp == 32 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
3835 | as_bad (_("`gp=32' used with a 64-bit ABI")); | |
3836 | else if (abi_checks | |
3837 | && opts->gp == 64 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
3838 | as_bad (_("`gp=64' used with a 32-bit ABI")); | |
3839 | ||
3840 | /* Check the size of the float registers agrees with the ABI and ISA. */ | |
3841 | switch (opts->fp) | |
3842 | { | |
351cdf24 MF |
3843 | case 0: |
3844 | if (!CPU_HAS_LDC1_SDC1 (opts->arch)) | |
3845 | as_bad (_("`fp=xx' used with a cpu lacking ldc1/sdc1 instructions")); | |
3846 | else if (opts->single_float == 1) | |
3847 | as_bad (_("`fp=xx' cannot be used with `singlefloat'")); | |
3848 | break; | |
919731af | 3849 | case 64: |
3850 | if (!ISA_HAS_64BIT_FPRS (opts->isa)) | |
3851 | as_bad (_("`fp=64' used with a 32-bit fpu")); | |
3852 | else if (abi_checks | |
3853 | && ABI_NEEDS_32BIT_REGS (mips_abi) | |
3854 | && !ISA_HAS_MXHC1 (opts->isa)) | |
3855 | as_warn (_("`fp=64' used with a 32-bit ABI")); | |
3856 | break; | |
3857 | case 32: | |
3858 | if (abi_checks | |
3859 | && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
3860 | as_warn (_("`fp=32' used with a 64-bit ABI")); | |
5f4678bb | 3861 | if (ISA_IS_R6 (opts->isa) && opts->single_float == 0) |
7361da2c | 3862 | as_bad (_("`fp=32' used with a MIPS R6 cpu")); |
919731af | 3863 | break; |
3864 | default: | |
3865 | as_bad (_("Unknown size of floating point registers")); | |
3866 | break; | |
3867 | } | |
3868 | ||
351cdf24 MF |
3869 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !opts->oddspreg) |
3870 | as_bad (_("`nooddspreg` cannot be used with a 64-bit ABI")); | |
3871 | ||
919731af | 3872 | if (opts->micromips == 1 && opts->mips16 == 1) |
1357373c | 3873 | as_bad (_("`%s' cannot be used with `%s'"), "mips16", "micromips"); |
5f4678bb | 3874 | else if (ISA_IS_R6 (opts->isa) |
7361da2c AB |
3875 | && (opts->micromips == 1 |
3876 | || opts->mips16 == 1)) | |
1357373c | 3877 | as_fatal (_("`%s' cannot be used with `%s'"), |
7361da2c | 3878 | opts->micromips ? "micromips" : "mips16", |
5f4678bb | 3879 | mips_cpu_info_from_isa (opts->isa)->name); |
7361da2c AB |
3880 | |
3881 | if (ISA_IS_R6 (opts->isa) && mips_relax_branch) | |
3882 | as_fatal (_("branch relaxation is not supported in `%s'"), | |
3883 | mips_cpu_info_from_isa (opts->isa)->name); | |
919731af | 3884 | } |
3885 | ||
3886 | /* Perform consistency checks on the module level options exactly once. | |
3887 | This is a deferred check that happens: | |
3888 | at the first .set directive | |
3889 | or, at the first pseudo op that generates code (inc .dc.a) | |
3890 | or, at the first instruction | |
3891 | or, at the end. */ | |
3892 | ||
3893 | static void | |
3894 | file_mips_check_options (void) | |
3895 | { | |
3896 | const struct mips_cpu_info *arch_info = 0; | |
3897 | ||
3898 | if (file_mips_opts_checked) | |
3899 | return; | |
3900 | ||
3901 | /* The following code determines the register size. | |
3902 | Similar code was added to GCC 3.3 (see override_options() in | |
3903 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
3904 | as much as possible. */ | |
3905 | ||
3906 | if (file_mips_opts.gp < 0) | |
3907 | { | |
3908 | /* Infer the integer register size from the ABI and processor. | |
3909 | Restrict ourselves to 32-bit registers if that's all the | |
3910 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
3911 | file_mips_opts.gp = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
3912 | || !ISA_HAS_64BIT_REGS (file_mips_opts.isa)) | |
3913 | ? 32 : 64; | |
3914 | } | |
3915 | ||
3916 | if (file_mips_opts.fp < 0) | |
3917 | { | |
3918 | /* No user specified float register size. | |
3919 | ??? GAS treats single-float processors as though they had 64-bit | |
3920 | float registers (although it complains when double-precision | |
3921 | instructions are used). As things stand, saying they have 32-bit | |
3922 | registers would lead to spurious "register must be even" messages. | |
3923 | So here we assume float registers are never smaller than the | |
3924 | integer ones. */ | |
3925 | if (file_mips_opts.gp == 64) | |
3926 | /* 64-bit integer registers implies 64-bit float registers. */ | |
3927 | file_mips_opts.fp = 64; | |
3928 | else if ((file_mips_opts.ase & FP64_ASES) | |
3929 | && ISA_HAS_64BIT_FPRS (file_mips_opts.isa)) | |
3930 | /* Handle ASEs that require 64-bit float registers, if possible. */ | |
3931 | file_mips_opts.fp = 64; | |
7361da2c AB |
3932 | else if (ISA_IS_R6 (mips_opts.isa)) |
3933 | /* R6 implies 64-bit float registers. */ | |
3934 | file_mips_opts.fp = 64; | |
919731af | 3935 | else |
3936 | /* 32-bit float registers. */ | |
3937 | file_mips_opts.fp = 32; | |
3938 | } | |
3939 | ||
3940 | arch_info = mips_cpu_info_from_arch (file_mips_opts.arch); | |
3941 | ||
351cdf24 MF |
3942 | /* Disable operations on odd-numbered floating-point registers by default |
3943 | when using the FPXX ABI. */ | |
3944 | if (file_mips_opts.oddspreg < 0) | |
3945 | { | |
3946 | if (file_mips_opts.fp == 0) | |
3947 | file_mips_opts.oddspreg = 0; | |
3948 | else | |
3949 | file_mips_opts.oddspreg = 1; | |
3950 | } | |
3951 | ||
919731af | 3952 | /* End of GCC-shared inference code. */ |
3953 | ||
3954 | /* This flag is set when we have a 64-bit capable CPU but use only | |
3955 | 32-bit wide registers. Note that EABI does not use it. */ | |
3956 | if (ISA_HAS_64BIT_REGS (file_mips_opts.isa) | |
3957 | && ((mips_abi == NO_ABI && file_mips_opts.gp == 32) | |
3958 | || mips_abi == O32_ABI)) | |
3959 | mips_32bitmode = 1; | |
3960 | ||
3961 | if (file_mips_opts.isa == ISA_MIPS1 && mips_trap) | |
3962 | as_bad (_("trap exception not supported at ISA 1")); | |
3963 | ||
3964 | /* If the selected architecture includes support for ASEs, enable | |
3965 | generation of code for them. */ | |
3966 | if (file_mips_opts.mips16 == -1) | |
3967 | file_mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_opts.arch)) ? 1 : 0; | |
3968 | if (file_mips_opts.micromips == -1) | |
3969 | file_mips_opts.micromips = (CPU_HAS_MICROMIPS (file_mips_opts.arch)) | |
3970 | ? 1 : 0; | |
3971 | ||
7361da2c AB |
3972 | if (mips_nan2008 == -1) |
3973 | mips_nan2008 = (ISA_HAS_LEGACY_NAN (file_mips_opts.isa)) ? 0 : 1; | |
3974 | else if (!ISA_HAS_LEGACY_NAN (file_mips_opts.isa) && mips_nan2008 == 0) | |
3975 | as_fatal (_("`%s' does not support legacy NaN"), | |
3976 | mips_cpu_info_from_arch (file_mips_opts.arch)->name); | |
3977 | ||
919731af | 3978 | /* Some ASEs require 64-bit FPRs, so -mfp32 should stop those ASEs from |
3979 | being selected implicitly. */ | |
3980 | if (file_mips_opts.fp != 64) | |
3981 | file_ase_explicit |= ASE_MIPS3D | ASE_MDMX | ASE_MSA; | |
3982 | ||
3983 | /* If the user didn't explicitly select or deselect a particular ASE, | |
3984 | use the default setting for the CPU. */ | |
3985 | file_mips_opts.ase |= (arch_info->ase & ~file_ase_explicit); | |
3986 | ||
3987 | /* Set up the current options. These may change throughout assembly. */ | |
3988 | mips_opts = file_mips_opts; | |
3989 | ||
3990 | mips_check_isa_supports_ases (); | |
3991 | mips_check_options (&file_mips_opts, TRUE); | |
3992 | file_mips_opts_checked = TRUE; | |
3993 | ||
3994 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_opts.arch)) | |
3995 | as_warn (_("could not set architecture and machine")); | |
3996 | } | |
3997 | ||
252b5132 | 3998 | void |
17a2f251 | 3999 | md_assemble (char *str) |
252b5132 RH |
4000 | { |
4001 | struct mips_cl_insn insn; | |
f6688943 TS |
4002 | bfd_reloc_code_real_type unused_reloc[3] |
4003 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 4004 | |
919731af | 4005 | file_mips_check_options (); |
4006 | ||
252b5132 | 4007 | imm_expr.X_op = O_absent; |
252b5132 | 4008 | offset_expr.X_op = O_absent; |
f6688943 TS |
4009 | offset_reloc[0] = BFD_RELOC_UNUSED; |
4010 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
4011 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 | 4012 | |
e1b47bd5 RS |
4013 | mips_mark_labels (); |
4014 | mips_assembling_insn = TRUE; | |
e3de51ce | 4015 | clear_insn_error (); |
e1b47bd5 | 4016 | |
252b5132 RH |
4017 | if (mips_opts.mips16) |
4018 | mips16_ip (str, &insn); | |
4019 | else | |
4020 | { | |
4021 | mips_ip (str, &insn); | |
beae10d5 KH |
4022 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
4023 | str, insn.insn_opcode)); | |
252b5132 RH |
4024 | } |
4025 | ||
e3de51ce RS |
4026 | if (insn_error.msg) |
4027 | report_insn_error (str); | |
e1b47bd5 | 4028 | else if (insn.insn_mo->pinfo == INSN_MACRO) |
252b5132 | 4029 | { |
584892a6 | 4030 | macro_start (); |
252b5132 RH |
4031 | if (mips_opts.mips16) |
4032 | mips16_macro (&insn); | |
4033 | else | |
833794fc | 4034 | macro (&insn, str); |
584892a6 | 4035 | macro_end (); |
252b5132 RH |
4036 | } |
4037 | else | |
4038 | { | |
77bd4346 | 4039 | if (offset_expr.X_op != O_absent) |
df58fc94 | 4040 | append_insn (&insn, &offset_expr, offset_reloc, FALSE); |
252b5132 | 4041 | else |
df58fc94 | 4042 | append_insn (&insn, NULL, unused_reloc, FALSE); |
252b5132 | 4043 | } |
e1b47bd5 RS |
4044 | |
4045 | mips_assembling_insn = FALSE; | |
252b5132 RH |
4046 | } |
4047 | ||
738e5348 RS |
4048 | /* Convenience functions for abstracting away the differences between |
4049 | MIPS16 and non-MIPS16 relocations. */ | |
4050 | ||
4051 | static inline bfd_boolean | |
4052 | mips16_reloc_p (bfd_reloc_code_real_type reloc) | |
4053 | { | |
4054 | switch (reloc) | |
4055 | { | |
4056 | case BFD_RELOC_MIPS16_JMP: | |
4057 | case BFD_RELOC_MIPS16_GPREL: | |
4058 | case BFD_RELOC_MIPS16_GOT16: | |
4059 | case BFD_RELOC_MIPS16_CALL16: | |
4060 | case BFD_RELOC_MIPS16_HI16_S: | |
4061 | case BFD_RELOC_MIPS16_HI16: | |
4062 | case BFD_RELOC_MIPS16_LO16: | |
4063 | return TRUE; | |
4064 | ||
4065 | default: | |
4066 | return FALSE; | |
4067 | } | |
4068 | } | |
4069 | ||
df58fc94 RS |
4070 | static inline bfd_boolean |
4071 | micromips_reloc_p (bfd_reloc_code_real_type reloc) | |
4072 | { | |
4073 | switch (reloc) | |
4074 | { | |
4075 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
4076 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
4077 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
4078 | case BFD_RELOC_MICROMIPS_GPREL16: | |
4079 | case BFD_RELOC_MICROMIPS_JMP: | |
4080 | case BFD_RELOC_MICROMIPS_HI16: | |
4081 | case BFD_RELOC_MICROMIPS_HI16_S: | |
4082 | case BFD_RELOC_MICROMIPS_LO16: | |
4083 | case BFD_RELOC_MICROMIPS_LITERAL: | |
4084 | case BFD_RELOC_MICROMIPS_GOT16: | |
4085 | case BFD_RELOC_MICROMIPS_CALL16: | |
4086 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
4087 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
4088 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
4089 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
4090 | case BFD_RELOC_MICROMIPS_SUB: | |
4091 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
4092 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
4093 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
4094 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
4095 | case BFD_RELOC_MICROMIPS_HIGHER: | |
4096 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
4097 | case BFD_RELOC_MICROMIPS_JALR: | |
4098 | return TRUE; | |
4099 | ||
4100 | default: | |
4101 | return FALSE; | |
4102 | } | |
4103 | } | |
4104 | ||
2309ddf2 MR |
4105 | static inline bfd_boolean |
4106 | jmp_reloc_p (bfd_reloc_code_real_type reloc) | |
4107 | { | |
4108 | return reloc == BFD_RELOC_MIPS_JMP || reloc == BFD_RELOC_MICROMIPS_JMP; | |
4109 | } | |
4110 | ||
738e5348 RS |
4111 | static inline bfd_boolean |
4112 | got16_reloc_p (bfd_reloc_code_real_type reloc) | |
4113 | { | |
2309ddf2 | 4114 | return (reloc == BFD_RELOC_MIPS_GOT16 || reloc == BFD_RELOC_MIPS16_GOT16 |
df58fc94 | 4115 | || reloc == BFD_RELOC_MICROMIPS_GOT16); |
738e5348 RS |
4116 | } |
4117 | ||
4118 | static inline bfd_boolean | |
4119 | hi16_reloc_p (bfd_reloc_code_real_type reloc) | |
4120 | { | |
2309ddf2 | 4121 | return (reloc == BFD_RELOC_HI16_S || reloc == BFD_RELOC_MIPS16_HI16_S |
df58fc94 | 4122 | || reloc == BFD_RELOC_MICROMIPS_HI16_S); |
738e5348 RS |
4123 | } |
4124 | ||
4125 | static inline bfd_boolean | |
4126 | lo16_reloc_p (bfd_reloc_code_real_type reloc) | |
4127 | { | |
2309ddf2 | 4128 | return (reloc == BFD_RELOC_LO16 || reloc == BFD_RELOC_MIPS16_LO16 |
df58fc94 RS |
4129 | || reloc == BFD_RELOC_MICROMIPS_LO16); |
4130 | } | |
4131 | ||
df58fc94 RS |
4132 | static inline bfd_boolean |
4133 | jalr_reloc_p (bfd_reloc_code_real_type reloc) | |
4134 | { | |
2309ddf2 | 4135 | return reloc == BFD_RELOC_MIPS_JALR || reloc == BFD_RELOC_MICROMIPS_JALR; |
738e5348 RS |
4136 | } |
4137 | ||
f2ae14a1 RS |
4138 | static inline bfd_boolean |
4139 | gprel16_reloc_p (bfd_reloc_code_real_type reloc) | |
4140 | { | |
4141 | return (reloc == BFD_RELOC_GPREL16 || reloc == BFD_RELOC_MIPS16_GPREL | |
4142 | || reloc == BFD_RELOC_MICROMIPS_GPREL16); | |
4143 | } | |
4144 | ||
2de39019 CM |
4145 | /* Return true if RELOC is a PC-relative relocation that does not have |
4146 | full address range. */ | |
4147 | ||
4148 | static inline bfd_boolean | |
4149 | limited_pcrel_reloc_p (bfd_reloc_code_real_type reloc) | |
4150 | { | |
4151 | switch (reloc) | |
4152 | { | |
4153 | case BFD_RELOC_16_PCREL_S2: | |
4154 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
4155 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
4156 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
7361da2c AB |
4157 | case BFD_RELOC_MIPS_21_PCREL_S2: |
4158 | case BFD_RELOC_MIPS_26_PCREL_S2: | |
4159 | case BFD_RELOC_MIPS_18_PCREL_S3: | |
4160 | case BFD_RELOC_MIPS_19_PCREL_S2: | |
2de39019 CM |
4161 | return TRUE; |
4162 | ||
b47468a6 | 4163 | case BFD_RELOC_32_PCREL: |
7361da2c AB |
4164 | case BFD_RELOC_HI16_S_PCREL: |
4165 | case BFD_RELOC_LO16_PCREL: | |
b47468a6 CM |
4166 | return HAVE_64BIT_ADDRESSES; |
4167 | ||
2de39019 CM |
4168 | default: |
4169 | return FALSE; | |
4170 | } | |
4171 | } | |
b47468a6 | 4172 | |
5919d012 | 4173 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
4174 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
4175 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
4176 | |
4177 | static inline bfd_boolean | |
17a2f251 | 4178 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 4179 | { |
3b91255e | 4180 | return (HAVE_IN_PLACE_ADDENDS |
738e5348 | 4181 | && (hi16_reloc_p (reloc) |
0a44bf69 RS |
4182 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); |
4183 | all GOT16 relocations evaluate to "G". */ | |
738e5348 RS |
4184 | || (got16_reloc_p (reloc) && mips_pic != VXWORKS_PIC))); |
4185 | } | |
4186 | ||
4187 | /* Return the type of %lo() reloc needed by RELOC, given that | |
4188 | reloc_needs_lo_p. */ | |
4189 | ||
4190 | static inline bfd_reloc_code_real_type | |
4191 | matching_lo_reloc (bfd_reloc_code_real_type reloc) | |
4192 | { | |
df58fc94 RS |
4193 | return (mips16_reloc_p (reloc) ? BFD_RELOC_MIPS16_LO16 |
4194 | : (micromips_reloc_p (reloc) ? BFD_RELOC_MICROMIPS_LO16 | |
4195 | : BFD_RELOC_LO16)); | |
5919d012 RS |
4196 | } |
4197 | ||
4198 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
4199 | relocation. */ | |
4200 | ||
4201 | static inline bfd_boolean | |
17a2f251 | 4202 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
4203 | { |
4204 | return (fixp->fx_next != NULL | |
738e5348 | 4205 | && fixp->fx_next->fx_r_type == matching_lo_reloc (fixp->fx_r_type) |
5919d012 RS |
4206 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
4207 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
4208 | } | |
4209 | ||
462427c4 RS |
4210 | /* Move all labels in LABELS to the current insertion point. TEXT_P |
4211 | says whether the labels refer to text or data. */ | |
404a8071 RS |
4212 | |
4213 | static void | |
462427c4 | 4214 | mips_move_labels (struct insn_label_list *labels, bfd_boolean text_p) |
404a8071 RS |
4215 | { |
4216 | struct insn_label_list *l; | |
4217 | valueT val; | |
4218 | ||
462427c4 | 4219 | for (l = labels; l != NULL; l = l->next) |
404a8071 | 4220 | { |
9c2799c2 | 4221 | gas_assert (S_GET_SEGMENT (l->label) == now_seg); |
404a8071 RS |
4222 | symbol_set_frag (l->label, frag_now); |
4223 | val = (valueT) frag_now_fix (); | |
df58fc94 | 4224 | /* MIPS16/microMIPS text labels are stored as odd. */ |
462427c4 | 4225 | if (text_p && HAVE_CODE_COMPRESSION) |
404a8071 RS |
4226 | ++val; |
4227 | S_SET_VALUE (l->label, val); | |
4228 | } | |
4229 | } | |
4230 | ||
462427c4 RS |
4231 | /* Move all labels in insn_labels to the current insertion point |
4232 | and treat them as text labels. */ | |
4233 | ||
4234 | static void | |
4235 | mips_move_text_labels (void) | |
4236 | { | |
4237 | mips_move_labels (seg_info (now_seg)->label_list, TRUE); | |
4238 | } | |
4239 | ||
5f0fe04b TS |
4240 | static bfd_boolean |
4241 | s_is_linkonce (symbolS *sym, segT from_seg) | |
4242 | { | |
4243 | bfd_boolean linkonce = FALSE; | |
4244 | segT symseg = S_GET_SEGMENT (sym); | |
4245 | ||
4246 | if (symseg != from_seg && !S_IS_LOCAL (sym)) | |
4247 | { | |
4248 | if ((bfd_get_section_flags (stdoutput, symseg) & SEC_LINK_ONCE)) | |
4249 | linkonce = TRUE; | |
5f0fe04b TS |
4250 | /* The GNU toolchain uses an extension for ELF: a section |
4251 | beginning with the magic string .gnu.linkonce is a | |
4252 | linkonce section. */ | |
4253 | if (strncmp (segment_name (symseg), ".gnu.linkonce", | |
4254 | sizeof ".gnu.linkonce" - 1) == 0) | |
4255 | linkonce = TRUE; | |
5f0fe04b TS |
4256 | } |
4257 | return linkonce; | |
4258 | } | |
4259 | ||
e1b47bd5 | 4260 | /* Mark MIPS16 or microMIPS instruction label LABEL. This permits the |
df58fc94 RS |
4261 | linker to handle them specially, such as generating jalx instructions |
4262 | when needed. We also make them odd for the duration of the assembly, | |
4263 | in order to generate the right sort of code. We will make them even | |
252b5132 RH |
4264 | in the adjust_symtab routine, while leaving them marked. This is |
4265 | convenient for the debugger and the disassembler. The linker knows | |
4266 | to make them odd again. */ | |
4267 | ||
4268 | static void | |
e1b47bd5 | 4269 | mips_compressed_mark_label (symbolS *label) |
252b5132 | 4270 | { |
df58fc94 | 4271 | gas_assert (HAVE_CODE_COMPRESSION); |
a8dbcb85 | 4272 | |
f3ded42a RS |
4273 | if (mips_opts.mips16) |
4274 | S_SET_OTHER (label, ELF_ST_SET_MIPS16 (S_GET_OTHER (label))); | |
4275 | else | |
4276 | S_SET_OTHER (label, ELF_ST_SET_MICROMIPS (S_GET_OTHER (label))); | |
e1b47bd5 RS |
4277 | if ((S_GET_VALUE (label) & 1) == 0 |
4278 | /* Don't adjust the address if the label is global or weak, or | |
4279 | in a link-once section, since we'll be emitting symbol reloc | |
4280 | references to it which will be patched up by the linker, and | |
4281 | the final value of the symbol may or may not be MIPS16/microMIPS. */ | |
4282 | && !S_IS_WEAK (label) | |
4283 | && !S_IS_EXTERNAL (label) | |
4284 | && !s_is_linkonce (label, now_seg)) | |
4285 | S_SET_VALUE (label, S_GET_VALUE (label) | 1); | |
4286 | } | |
4287 | ||
4288 | /* Mark preceding MIPS16 or microMIPS instruction labels. */ | |
4289 | ||
4290 | static void | |
4291 | mips_compressed_mark_labels (void) | |
4292 | { | |
4293 | struct insn_label_list *l; | |
4294 | ||
4295 | for (l = seg_info (now_seg)->label_list; l != NULL; l = l->next) | |
4296 | mips_compressed_mark_label (l->label); | |
252b5132 RH |
4297 | } |
4298 | ||
4d7206a2 RS |
4299 | /* End the current frag. Make it a variant frag and record the |
4300 | relaxation info. */ | |
4301 | ||
4302 | static void | |
4303 | relax_close_frag (void) | |
4304 | { | |
584892a6 | 4305 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 4306 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 4307 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
4308 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
4309 | ||
4310 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
4311 | mips_relax.first_fixup = 0; | |
4312 | } | |
4313 | ||
4314 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
4315 | See the comment above RELAX_ENCODE for more details. */ | |
4316 | ||
4317 | static void | |
4318 | relax_start (symbolS *symbol) | |
4319 | { | |
9c2799c2 | 4320 | gas_assert (mips_relax.sequence == 0); |
4d7206a2 RS |
4321 | mips_relax.sequence = 1; |
4322 | mips_relax.symbol = symbol; | |
4323 | } | |
4324 | ||
4325 | /* Start generating the second version of a relaxable sequence. | |
4326 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
4327 | |
4328 | static void | |
4d7206a2 RS |
4329 | relax_switch (void) |
4330 | { | |
9c2799c2 | 4331 | gas_assert (mips_relax.sequence == 1); |
4d7206a2 RS |
4332 | mips_relax.sequence = 2; |
4333 | } | |
4334 | ||
4335 | /* End the current relaxable sequence. */ | |
4336 | ||
4337 | static void | |
4338 | relax_end (void) | |
4339 | { | |
9c2799c2 | 4340 | gas_assert (mips_relax.sequence == 2); |
4d7206a2 RS |
4341 | relax_close_frag (); |
4342 | mips_relax.sequence = 0; | |
4343 | } | |
4344 | ||
11625dd8 RS |
4345 | /* Return true if IP is a delayed branch or jump. */ |
4346 | ||
4347 | static inline bfd_boolean | |
4348 | delayed_branch_p (const struct mips_cl_insn *ip) | |
4349 | { | |
4350 | return (ip->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY | |
4351 | | INSN_COND_BRANCH_DELAY | |
4352 | | INSN_COND_BRANCH_LIKELY)) != 0; | |
4353 | } | |
4354 | ||
4355 | /* Return true if IP is a compact branch or jump. */ | |
4356 | ||
4357 | static inline bfd_boolean | |
4358 | compact_branch_p (const struct mips_cl_insn *ip) | |
4359 | { | |
26545944 RS |
4360 | return (ip->insn_mo->pinfo2 & (INSN2_UNCOND_BRANCH |
4361 | | INSN2_COND_BRANCH)) != 0; | |
11625dd8 RS |
4362 | } |
4363 | ||
4364 | /* Return true if IP is an unconditional branch or jump. */ | |
4365 | ||
4366 | static inline bfd_boolean | |
4367 | uncond_branch_p (const struct mips_cl_insn *ip) | |
4368 | { | |
4369 | return ((ip->insn_mo->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0 | |
26545944 | 4370 | || (ip->insn_mo->pinfo2 & INSN2_UNCOND_BRANCH) != 0); |
11625dd8 RS |
4371 | } |
4372 | ||
4373 | /* Return true if IP is a branch-likely instruction. */ | |
4374 | ||
4375 | static inline bfd_boolean | |
4376 | branch_likely_p (const struct mips_cl_insn *ip) | |
4377 | { | |
4378 | return (ip->insn_mo->pinfo & INSN_COND_BRANCH_LIKELY) != 0; | |
4379 | } | |
4380 | ||
14fe068b RS |
4381 | /* Return the type of nop that should be used to fill the delay slot |
4382 | of delayed branch IP. */ | |
4383 | ||
4384 | static struct mips_cl_insn * | |
4385 | get_delay_slot_nop (const struct mips_cl_insn *ip) | |
4386 | { | |
4387 | if (mips_opts.micromips | |
4388 | && (ip->insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
4389 | return µmips_nop32_insn; | |
4390 | return NOP_INSN; | |
4391 | } | |
4392 | ||
fc76e730 RS |
4393 | /* Return a mask that has bit N set if OPCODE reads the register(s) |
4394 | in operand N. */ | |
df58fc94 RS |
4395 | |
4396 | static unsigned int | |
fc76e730 | 4397 | insn_read_mask (const struct mips_opcode *opcode) |
df58fc94 | 4398 | { |
fc76e730 RS |
4399 | return (opcode->pinfo & INSN_READ_ALL) >> INSN_READ_SHIFT; |
4400 | } | |
df58fc94 | 4401 | |
fc76e730 RS |
4402 | /* Return a mask that has bit N set if OPCODE writes to the register(s) |
4403 | in operand N. */ | |
4404 | ||
4405 | static unsigned int | |
4406 | insn_write_mask (const struct mips_opcode *opcode) | |
4407 | { | |
4408 | return (opcode->pinfo & INSN_WRITE_ALL) >> INSN_WRITE_SHIFT; | |
4409 | } | |
4410 | ||
4411 | /* Return a mask of the registers specified by operand OPERAND of INSN. | |
4412 | Ignore registers of type OP_REG_<t> unless bit OP_REG_<t> of TYPE_MASK | |
4413 | is set. */ | |
4414 | ||
4415 | static unsigned int | |
4416 | operand_reg_mask (const struct mips_cl_insn *insn, | |
4417 | const struct mips_operand *operand, | |
4418 | unsigned int type_mask) | |
4419 | { | |
4420 | unsigned int uval, vsel; | |
4421 | ||
4422 | switch (operand->type) | |
df58fc94 | 4423 | { |
fc76e730 RS |
4424 | case OP_INT: |
4425 | case OP_MAPPED_INT: | |
4426 | case OP_MSB: | |
4427 | case OP_PCREL: | |
4428 | case OP_PERF_REG: | |
4429 | case OP_ADDIUSP_INT: | |
4430 | case OP_ENTRY_EXIT_LIST: | |
4431 | case OP_REPEAT_DEST_REG: | |
4432 | case OP_REPEAT_PREV_REG: | |
4433 | case OP_PC: | |
14daeee3 RS |
4434 | case OP_VU0_SUFFIX: |
4435 | case OP_VU0_MATCH_SUFFIX: | |
56d438b1 | 4436 | case OP_IMM_INDEX: |
fc76e730 RS |
4437 | abort (); |
4438 | ||
4439 | case OP_REG: | |
0f35dbc4 | 4440 | case OP_OPTIONAL_REG: |
fc76e730 RS |
4441 | { |
4442 | const struct mips_reg_operand *reg_op; | |
4443 | ||
4444 | reg_op = (const struct mips_reg_operand *) operand; | |
4445 | if (!(type_mask & (1 << reg_op->reg_type))) | |
4446 | return 0; | |
4447 | uval = insn_extract_operand (insn, operand); | |
4448 | return 1 << mips_decode_reg_operand (reg_op, uval); | |
4449 | } | |
4450 | ||
4451 | case OP_REG_PAIR: | |
4452 | { | |
4453 | const struct mips_reg_pair_operand *pair_op; | |
4454 | ||
4455 | pair_op = (const struct mips_reg_pair_operand *) operand; | |
4456 | if (!(type_mask & (1 << pair_op->reg_type))) | |
4457 | return 0; | |
4458 | uval = insn_extract_operand (insn, operand); | |
4459 | return (1 << pair_op->reg1_map[uval]) | (1 << pair_op->reg2_map[uval]); | |
4460 | } | |
4461 | ||
4462 | case OP_CLO_CLZ_DEST: | |
4463 | if (!(type_mask & (1 << OP_REG_GP))) | |
4464 | return 0; | |
4465 | uval = insn_extract_operand (insn, operand); | |
4466 | return (1 << (uval & 31)) | (1 << (uval >> 5)); | |
4467 | ||
7361da2c AB |
4468 | case OP_SAME_RS_RT: |
4469 | if (!(type_mask & (1 << OP_REG_GP))) | |
4470 | return 0; | |
4471 | uval = insn_extract_operand (insn, operand); | |
4472 | gas_assert ((uval & 31) == (uval >> 5)); | |
4473 | return 1 << (uval & 31); | |
4474 | ||
4475 | case OP_CHECK_PREV: | |
4476 | case OP_NON_ZERO_REG: | |
4477 | if (!(type_mask & (1 << OP_REG_GP))) | |
4478 | return 0; | |
4479 | uval = insn_extract_operand (insn, operand); | |
4480 | return 1 << (uval & 31); | |
4481 | ||
fc76e730 RS |
4482 | case OP_LWM_SWM_LIST: |
4483 | abort (); | |
4484 | ||
4485 | case OP_SAVE_RESTORE_LIST: | |
4486 | abort (); | |
4487 | ||
4488 | case OP_MDMX_IMM_REG: | |
4489 | if (!(type_mask & (1 << OP_REG_VEC))) | |
4490 | return 0; | |
4491 | uval = insn_extract_operand (insn, operand); | |
4492 | vsel = uval >> 5; | |
4493 | if ((vsel & 0x18) == 0x18) | |
4494 | return 0; | |
4495 | return 1 << (uval & 31); | |
56d438b1 CF |
4496 | |
4497 | case OP_REG_INDEX: | |
4498 | if (!(type_mask & (1 << OP_REG_GP))) | |
4499 | return 0; | |
4500 | return 1 << insn_extract_operand (insn, operand); | |
df58fc94 | 4501 | } |
fc76e730 RS |
4502 | abort (); |
4503 | } | |
4504 | ||
4505 | /* Return a mask of the registers specified by operands OPNO_MASK of INSN, | |
4506 | where bit N of OPNO_MASK is set if operand N should be included. | |
4507 | Ignore registers of type OP_REG_<t> unless bit OP_REG_<t> of TYPE_MASK | |
4508 | is set. */ | |
4509 | ||
4510 | static unsigned int | |
4511 | insn_reg_mask (const struct mips_cl_insn *insn, | |
4512 | unsigned int type_mask, unsigned int opno_mask) | |
4513 | { | |
4514 | unsigned int opno, reg_mask; | |
4515 | ||
4516 | opno = 0; | |
4517 | reg_mask = 0; | |
4518 | while (opno_mask != 0) | |
4519 | { | |
4520 | if (opno_mask & 1) | |
4521 | reg_mask |= operand_reg_mask (insn, insn_opno (insn, opno), type_mask); | |
4522 | opno_mask >>= 1; | |
4523 | opno += 1; | |
4524 | } | |
4525 | return reg_mask; | |
df58fc94 RS |
4526 | } |
4527 | ||
4c260379 RS |
4528 | /* Return the mask of core registers that IP reads. */ |
4529 | ||
4530 | static unsigned int | |
4531 | gpr_read_mask (const struct mips_cl_insn *ip) | |
4532 | { | |
4533 | unsigned long pinfo, pinfo2; | |
4534 | unsigned int mask; | |
4535 | ||
fc76e730 | 4536 | mask = insn_reg_mask (ip, 1 << OP_REG_GP, insn_read_mask (ip->insn_mo)); |
4c260379 RS |
4537 | pinfo = ip->insn_mo->pinfo; |
4538 | pinfo2 = ip->insn_mo->pinfo2; | |
fc76e730 | 4539 | if (pinfo & INSN_UDI) |
4c260379 | 4540 | { |
fc76e730 RS |
4541 | /* UDI instructions have traditionally been assumed to read RS |
4542 | and RT. */ | |
4543 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); | |
4544 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); | |
4c260379 | 4545 | } |
fc76e730 RS |
4546 | if (pinfo & INSN_READ_GPR_24) |
4547 | mask |= 1 << 24; | |
4548 | if (pinfo2 & INSN2_READ_GPR_16) | |
4549 | mask |= 1 << 16; | |
4550 | if (pinfo2 & INSN2_READ_SP) | |
4551 | mask |= 1 << SP; | |
26545944 | 4552 | if (pinfo2 & INSN2_READ_GPR_31) |
fc76e730 | 4553 | mask |= 1 << 31; |
fe35f09f RS |
4554 | /* Don't include register 0. */ |
4555 | return mask & ~1; | |
4c260379 RS |
4556 | } |
4557 | ||
4558 | /* Return the mask of core registers that IP writes. */ | |
4559 | ||
4560 | static unsigned int | |
4561 | gpr_write_mask (const struct mips_cl_insn *ip) | |
4562 | { | |
4563 | unsigned long pinfo, pinfo2; | |
4564 | unsigned int mask; | |
4565 | ||
fc76e730 | 4566 | mask = insn_reg_mask (ip, 1 << OP_REG_GP, insn_write_mask (ip->insn_mo)); |
4c260379 RS |
4567 | pinfo = ip->insn_mo->pinfo; |
4568 | pinfo2 = ip->insn_mo->pinfo2; | |
fc76e730 RS |
4569 | if (pinfo & INSN_WRITE_GPR_24) |
4570 | mask |= 1 << 24; | |
4571 | if (pinfo & INSN_WRITE_GPR_31) | |
4572 | mask |= 1 << 31; | |
4573 | if (pinfo & INSN_UDI) | |
4574 | /* UDI instructions have traditionally been assumed to write to RD. */ | |
4575 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); | |
4576 | if (pinfo2 & INSN2_WRITE_SP) | |
4577 | mask |= 1 << SP; | |
fe35f09f RS |
4578 | /* Don't include register 0. */ |
4579 | return mask & ~1; | |
4c260379 RS |
4580 | } |
4581 | ||
4582 | /* Return the mask of floating-point registers that IP reads. */ | |
4583 | ||
4584 | static unsigned int | |
4585 | fpr_read_mask (const struct mips_cl_insn *ip) | |
4586 | { | |
fc76e730 | 4587 | unsigned long pinfo; |
4c260379 RS |
4588 | unsigned int mask; |
4589 | ||
9d5de888 CF |
4590 | mask = insn_reg_mask (ip, ((1 << OP_REG_FP) | (1 << OP_REG_VEC) |
4591 | | (1 << OP_REG_MSA)), | |
fc76e730 | 4592 | insn_read_mask (ip->insn_mo)); |
4c260379 | 4593 | pinfo = ip->insn_mo->pinfo; |
4c260379 RS |
4594 | /* Conservatively treat all operands to an FP_D instruction are doubles. |
4595 | (This is overly pessimistic for things like cvt.d.s.) */ | |
bad1aba3 | 4596 | if (FPR_SIZE != 64 && (pinfo & FP_D)) |
4c260379 RS |
4597 | mask |= mask << 1; |
4598 | return mask; | |
4599 | } | |
4600 | ||
4601 | /* Return the mask of floating-point registers that IP writes. */ | |
4602 | ||
4603 | static unsigned int | |
4604 | fpr_write_mask (const struct mips_cl_insn *ip) | |
4605 | { | |
fc76e730 | 4606 | unsigned long pinfo; |
4c260379 RS |
4607 | unsigned int mask; |
4608 | ||
9d5de888 CF |
4609 | mask = insn_reg_mask (ip, ((1 << OP_REG_FP) | (1 << OP_REG_VEC) |
4610 | | (1 << OP_REG_MSA)), | |
fc76e730 | 4611 | insn_write_mask (ip->insn_mo)); |
4c260379 | 4612 | pinfo = ip->insn_mo->pinfo; |
4c260379 RS |
4613 | /* Conservatively treat all operands to an FP_D instruction are doubles. |
4614 | (This is overly pessimistic for things like cvt.s.d.) */ | |
bad1aba3 | 4615 | if (FPR_SIZE != 64 && (pinfo & FP_D)) |
4c260379 RS |
4616 | mask |= mask << 1; |
4617 | return mask; | |
4618 | } | |
4619 | ||
a1d78564 RS |
4620 | /* Operand OPNUM of INSN is an odd-numbered floating-point register. |
4621 | Check whether that is allowed. */ | |
4622 | ||
4623 | static bfd_boolean | |
4624 | mips_oddfpreg_ok (const struct mips_opcode *insn, int opnum) | |
4625 | { | |
4626 | const char *s = insn->name; | |
351cdf24 MF |
4627 | bfd_boolean oddspreg = (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa, mips_opts.arch) |
4628 | || FPR_SIZE == 64) | |
4629 | && mips_opts.oddspreg; | |
a1d78564 RS |
4630 | |
4631 | if (insn->pinfo == INSN_MACRO) | |
4632 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
4633 | return TRUE; | |
4634 | ||
351cdf24 MF |
4635 | /* Single-precision coprocessor loads and moves are OK for 32-bit registers, |
4636 | otherwise it depends on oddspreg. */ | |
4637 | if ((insn->pinfo & FP_S) | |
4638 | && (insn->pinfo & (INSN_LOAD_MEMORY | INSN_STORE_MEMORY | |
43885403 | 4639 | | INSN_LOAD_COPROC | INSN_COPROC_MOVE))) |
351cdf24 | 4640 | return FPR_SIZE == 32 || oddspreg; |
a1d78564 | 4641 | |
351cdf24 MF |
4642 | /* Allow odd registers for single-precision ops and double-precision if the |
4643 | floating-point registers are 64-bit wide. */ | |
4644 | switch (insn->pinfo & (FP_S | FP_D)) | |
4645 | { | |
4646 | case FP_S: | |
4647 | case 0: | |
4648 | return oddspreg; | |
4649 | case FP_D: | |
4650 | return FPR_SIZE == 64; | |
4651 | default: | |
4652 | break; | |
a1d78564 RS |
4653 | } |
4654 | ||
351cdf24 MF |
4655 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ |
4656 | s = strchr (insn->name, '.'); | |
4657 | if (s != NULL && opnum == 2) | |
4658 | s = strchr (s + 1, '.'); | |
4659 | if (s != NULL && (s[1] == 'w' || s[1] == 's')) | |
4660 | return oddspreg; | |
a1d78564 | 4661 | |
351cdf24 | 4662 | return FPR_SIZE == 64; |
a1d78564 RS |
4663 | } |
4664 | ||
a1d78564 RS |
4665 | /* Information about an instruction argument that we're trying to match. */ |
4666 | struct mips_arg_info | |
4667 | { | |
4668 | /* The instruction so far. */ | |
4669 | struct mips_cl_insn *insn; | |
4670 | ||
a92713e6 RS |
4671 | /* The first unconsumed operand token. */ |
4672 | struct mips_operand_token *token; | |
4673 | ||
a1d78564 RS |
4674 | /* The 1-based operand number, in terms of insn->insn_mo->args. */ |
4675 | int opnum; | |
4676 | ||
4677 | /* The 1-based argument number, for error reporting. This does not | |
4678 | count elided optional registers, etc.. */ | |
4679 | int argnum; | |
4680 | ||
4681 | /* The last OP_REG operand seen, or ILLEGAL_REG if none. */ | |
4682 | unsigned int last_regno; | |
4683 | ||
4684 | /* If the first operand was an OP_REG, this is the register that it | |
4685 | specified, otherwise it is ILLEGAL_REG. */ | |
4686 | unsigned int dest_regno; | |
4687 | ||
4688 | /* The value of the last OP_INT operand. Only used for OP_MSB, | |
4689 | where it gives the lsb position. */ | |
4690 | unsigned int last_op_int; | |
4691 | ||
60f20e8b RS |
4692 | /* If true, match routines should assume that no later instruction |
4693 | alternative matches and should therefore be as accomodating as | |
4694 | possible. Match routines should not report errors if something | |
4695 | is only invalid for !LAX_MATCH. */ | |
4696 | bfd_boolean lax_match; | |
a1d78564 | 4697 | |
a1d78564 RS |
4698 | /* True if a reference to the current AT register was seen. */ |
4699 | bfd_boolean seen_at; | |
4700 | }; | |
4701 | ||
1a00e612 RS |
4702 | /* Record that the argument is out of range. */ |
4703 | ||
4704 | static void | |
4705 | match_out_of_range (struct mips_arg_info *arg) | |
4706 | { | |
4707 | set_insn_error_i (arg->argnum, _("operand %d out of range"), arg->argnum); | |
4708 | } | |
4709 | ||
4710 | /* Record that the argument isn't constant but needs to be. */ | |
4711 | ||
4712 | static void | |
4713 | match_not_constant (struct mips_arg_info *arg) | |
4714 | { | |
4715 | set_insn_error_i (arg->argnum, _("operand %d must be constant"), | |
4716 | arg->argnum); | |
4717 | } | |
4718 | ||
a92713e6 RS |
4719 | /* Try to match an OT_CHAR token for character CH. Consume the token |
4720 | and return true on success, otherwise return false. */ | |
a1d78564 | 4721 | |
a92713e6 RS |
4722 | static bfd_boolean |
4723 | match_char (struct mips_arg_info *arg, char ch) | |
a1d78564 | 4724 | { |
a92713e6 RS |
4725 | if (arg->token->type == OT_CHAR && arg->token->u.ch == ch) |
4726 | { | |
4727 | ++arg->token; | |
4728 | if (ch == ',') | |
4729 | arg->argnum += 1; | |
4730 | return TRUE; | |
4731 | } | |
4732 | return FALSE; | |
4733 | } | |
a1d78564 | 4734 | |
a92713e6 RS |
4735 | /* Try to get an expression from the next tokens in ARG. Consume the |
4736 | tokens and return true on success, storing the expression value in | |
4737 | VALUE and relocation types in R. */ | |
4738 | ||
4739 | static bfd_boolean | |
4740 | match_expression (struct mips_arg_info *arg, expressionS *value, | |
4741 | bfd_reloc_code_real_type *r) | |
4742 | { | |
d436c1c2 RS |
4743 | /* If the next token is a '(' that was parsed as being part of a base |
4744 | expression, assume we have an elided offset. The later match will fail | |
4745 | if this turns out to be wrong. */ | |
4746 | if (arg->token->type == OT_CHAR && arg->token->u.ch == '(') | |
a1d78564 | 4747 | { |
d436c1c2 RS |
4748 | value->X_op = O_constant; |
4749 | value->X_add_number = 0; | |
4750 | r[0] = r[1] = r[2] = BFD_RELOC_UNUSED; | |
a92713e6 RS |
4751 | return TRUE; |
4752 | } | |
4753 | ||
d436c1c2 RS |
4754 | /* Reject register-based expressions such as "0+$2" and "(($2))". |
4755 | For plain registers the default error seems more appropriate. */ | |
4756 | if (arg->token->type == OT_INTEGER | |
4757 | && arg->token->u.integer.value.X_op == O_register) | |
a92713e6 | 4758 | { |
d436c1c2 RS |
4759 | set_insn_error (arg->argnum, _("register value used as expression")); |
4760 | return FALSE; | |
a1d78564 | 4761 | } |
d436c1c2 RS |
4762 | |
4763 | if (arg->token->type == OT_INTEGER) | |
a92713e6 | 4764 | { |
d436c1c2 RS |
4765 | *value = arg->token->u.integer.value; |
4766 | memcpy (r, arg->token->u.integer.relocs, 3 * sizeof (*r)); | |
4767 | ++arg->token; | |
4768 | return TRUE; | |
a92713e6 | 4769 | } |
a92713e6 | 4770 | |
d436c1c2 RS |
4771 | set_insn_error_i |
4772 | (arg->argnum, _("operand %d must be an immediate expression"), | |
4773 | arg->argnum); | |
4774 | return FALSE; | |
a92713e6 RS |
4775 | } |
4776 | ||
4777 | /* Try to get a constant expression from the next tokens in ARG. Consume | |
4778 | the tokens and return return true on success, storing the constant value | |
4779 | in *VALUE. Use FALLBACK as the value if the match succeeded with an | |
4780 | error. */ | |
4781 | ||
4782 | static bfd_boolean | |
1a00e612 | 4783 | match_const_int (struct mips_arg_info *arg, offsetT *value) |
a92713e6 RS |
4784 | { |
4785 | expressionS ex; | |
4786 | bfd_reloc_code_real_type r[3]; | |
a1d78564 | 4787 | |
a92713e6 RS |
4788 | if (!match_expression (arg, &ex, r)) |
4789 | return FALSE; | |
4790 | ||
4791 | if (r[0] == BFD_RELOC_UNUSED && ex.X_op == O_constant) | |
a1d78564 RS |
4792 | *value = ex.X_add_number; |
4793 | else | |
4794 | { | |
1a00e612 RS |
4795 | match_not_constant (arg); |
4796 | return FALSE; | |
a1d78564 | 4797 | } |
a92713e6 | 4798 | return TRUE; |
a1d78564 RS |
4799 | } |
4800 | ||
4801 | /* Return the RTYPE_* flags for a register operand of type TYPE that | |
4802 | appears in instruction OPCODE. */ | |
4803 | ||
4804 | static unsigned int | |
4805 | convert_reg_type (const struct mips_opcode *opcode, | |
4806 | enum mips_reg_operand_type type) | |
4807 | { | |
4808 | switch (type) | |
4809 | { | |
4810 | case OP_REG_GP: | |
4811 | return RTYPE_NUM | RTYPE_GP; | |
4812 | ||
4813 | case OP_REG_FP: | |
4814 | /* Allow vector register names for MDMX if the instruction is a 64-bit | |
4815 | FPR load, store or move (including moves to and from GPRs). */ | |
4816 | if ((mips_opts.ase & ASE_MDMX) | |
4817 | && (opcode->pinfo & FP_D) | |
43885403 | 4818 | && (opcode->pinfo & (INSN_COPROC_MOVE |
a1d78564 | 4819 | | INSN_COPROC_MEMORY_DELAY |
43885403 | 4820 | | INSN_LOAD_COPROC |
67dc82bc | 4821 | | INSN_LOAD_MEMORY |
a1d78564 RS |
4822 | | INSN_STORE_MEMORY))) |
4823 | return RTYPE_FPU | RTYPE_VEC; | |
4824 | return RTYPE_FPU; | |
4825 | ||
4826 | case OP_REG_CCC: | |
4827 | if (opcode->pinfo & (FP_D | FP_S)) | |
4828 | return RTYPE_CCC | RTYPE_FCC; | |
4829 | return RTYPE_CCC; | |
4830 | ||
4831 | case OP_REG_VEC: | |
4832 | if (opcode->membership & INSN_5400) | |
4833 | return RTYPE_FPU; | |
4834 | return RTYPE_FPU | RTYPE_VEC; | |
4835 | ||
4836 | case OP_REG_ACC: | |
4837 | return RTYPE_ACC; | |
4838 | ||
4839 | case OP_REG_COPRO: | |
4840 | if (opcode->name[strlen (opcode->name) - 1] == '0') | |
4841 | return RTYPE_NUM | RTYPE_CP0; | |
4842 | return RTYPE_NUM; | |
4843 | ||
4844 | case OP_REG_HW: | |
4845 | return RTYPE_NUM; | |
14daeee3 RS |
4846 | |
4847 | case OP_REG_VI: | |
4848 | return RTYPE_NUM | RTYPE_VI; | |
4849 | ||
4850 | case OP_REG_VF: | |
4851 | return RTYPE_NUM | RTYPE_VF; | |
4852 | ||
4853 | case OP_REG_R5900_I: | |
4854 | return RTYPE_R5900_I; | |
4855 | ||
4856 | case OP_REG_R5900_Q: | |
4857 | return RTYPE_R5900_Q; | |
4858 | ||
4859 | case OP_REG_R5900_R: | |
4860 | return RTYPE_R5900_R; | |
4861 | ||
4862 | case OP_REG_R5900_ACC: | |
4863 | return RTYPE_R5900_ACC; | |
56d438b1 CF |
4864 | |
4865 | case OP_REG_MSA: | |
4866 | return RTYPE_MSA; | |
4867 | ||
4868 | case OP_REG_MSA_CTRL: | |
4869 | return RTYPE_NUM; | |
a1d78564 RS |
4870 | } |
4871 | abort (); | |
4872 | } | |
4873 | ||
4874 | /* ARG is register REGNO, of type TYPE. Warn about any dubious registers. */ | |
4875 | ||
4876 | static void | |
4877 | check_regno (struct mips_arg_info *arg, | |
4878 | enum mips_reg_operand_type type, unsigned int regno) | |
4879 | { | |
4880 | if (AT && type == OP_REG_GP && regno == AT) | |
4881 | arg->seen_at = TRUE; | |
4882 | ||
4883 | if (type == OP_REG_FP | |
4884 | && (regno & 1) != 0 | |
a1d78564 | 4885 | && !mips_oddfpreg_ok (arg->insn->insn_mo, arg->opnum)) |
351cdf24 MF |
4886 | { |
4887 | /* This was a warning prior to introducing O32 FPXX and FP64 support | |
4888 | so maintain a warning for FP32 but raise an error for the new | |
4889 | cases. */ | |
4890 | if (FPR_SIZE == 32) | |
4891 | as_warn (_("float register should be even, was %d"), regno); | |
4892 | else | |
4893 | as_bad (_("float register should be even, was %d"), regno); | |
4894 | } | |
a1d78564 RS |
4895 | |
4896 | if (type == OP_REG_CCC) | |
4897 | { | |
4898 | const char *name; | |
4899 | size_t length; | |
4900 | ||
4901 | name = arg->insn->insn_mo->name; | |
4902 | length = strlen (name); | |
4903 | if ((regno & 1) != 0 | |
4904 | && ((length >= 3 && strcmp (name + length - 3, ".ps") == 0) | |
4905 | || (length >= 5 && strncmp (name + length - 5, "any2", 4) == 0))) | |
1661c76c | 4906 | as_warn (_("condition code register should be even for %s, was %d"), |
a1d78564 RS |
4907 | name, regno); |
4908 | ||
4909 | if ((regno & 3) != 0 | |
4910 | && (length >= 5 && strncmp (name + length - 5, "any4", 4) == 0)) | |
1661c76c | 4911 | as_warn (_("condition code register should be 0 or 4 for %s, was %d"), |
a1d78564 RS |
4912 | name, regno); |
4913 | } | |
4914 | } | |
4915 | ||
a92713e6 RS |
4916 | /* ARG is a register with symbol value SYMVAL. Try to interpret it as |
4917 | a register of type TYPE. Return true on success, storing the register | |
4918 | number in *REGNO and warning about any dubious uses. */ | |
4919 | ||
4920 | static bfd_boolean | |
4921 | match_regno (struct mips_arg_info *arg, enum mips_reg_operand_type type, | |
4922 | unsigned int symval, unsigned int *regno) | |
4923 | { | |
4924 | if (type == OP_REG_VEC) | |
4925 | symval = mips_prefer_vec_regno (symval); | |
4926 | if (!(symval & convert_reg_type (arg->insn->insn_mo, type))) | |
4927 | return FALSE; | |
4928 | ||
4929 | *regno = symval & RNUM_MASK; | |
4930 | check_regno (arg, type, *regno); | |
4931 | return TRUE; | |
4932 | } | |
4933 | ||
4934 | /* Try to interpret the next token in ARG as a register of type TYPE. | |
4935 | Consume the token and return true on success, storing the register | |
4936 | number in *REGNO. Return false on failure. */ | |
4937 | ||
4938 | static bfd_boolean | |
4939 | match_reg (struct mips_arg_info *arg, enum mips_reg_operand_type type, | |
4940 | unsigned int *regno) | |
4941 | { | |
4942 | if (arg->token->type == OT_REG | |
4943 | && match_regno (arg, type, arg->token->u.regno, regno)) | |
4944 | { | |
4945 | ++arg->token; | |
4946 | return TRUE; | |
4947 | } | |
4948 | return FALSE; | |
4949 | } | |
4950 | ||
4951 | /* Try to interpret the next token in ARG as a range of registers of type TYPE. | |
4952 | Consume the token and return true on success, storing the register numbers | |
4953 | in *REGNO1 and *REGNO2. Return false on failure. */ | |
4954 | ||
4955 | static bfd_boolean | |
4956 | match_reg_range (struct mips_arg_info *arg, enum mips_reg_operand_type type, | |
4957 | unsigned int *regno1, unsigned int *regno2) | |
4958 | { | |
4959 | if (match_reg (arg, type, regno1)) | |
4960 | { | |
4961 | *regno2 = *regno1; | |
4962 | return TRUE; | |
4963 | } | |
4964 | if (arg->token->type == OT_REG_RANGE | |
4965 | && match_regno (arg, type, arg->token->u.reg_range.regno1, regno1) | |
4966 | && match_regno (arg, type, arg->token->u.reg_range.regno2, regno2) | |
4967 | && *regno1 <= *regno2) | |
4968 | { | |
4969 | ++arg->token; | |
4970 | return TRUE; | |
4971 | } | |
4972 | return FALSE; | |
4973 | } | |
4974 | ||
a1d78564 RS |
4975 | /* OP_INT matcher. */ |
4976 | ||
a92713e6 | 4977 | static bfd_boolean |
a1d78564 | 4978 | match_int_operand (struct mips_arg_info *arg, |
a92713e6 | 4979 | const struct mips_operand *operand_base) |
a1d78564 RS |
4980 | { |
4981 | const struct mips_int_operand *operand; | |
3ccad066 | 4982 | unsigned int uval; |
a1d78564 RS |
4983 | int min_val, max_val, factor; |
4984 | offsetT sval; | |
a1d78564 RS |
4985 | |
4986 | operand = (const struct mips_int_operand *) operand_base; | |
4987 | factor = 1 << operand->shift; | |
3ccad066 RS |
4988 | min_val = mips_int_operand_min (operand); |
4989 | max_val = mips_int_operand_max (operand); | |
a1d78564 | 4990 | |
d436c1c2 RS |
4991 | if (operand_base->lsb == 0 |
4992 | && operand_base->size == 16 | |
4993 | && operand->shift == 0 | |
4994 | && operand->bias == 0 | |
4995 | && (operand->max_val == 32767 || operand->max_val == 65535)) | |
a1d78564 RS |
4996 | { |
4997 | /* The operand can be relocated. */ | |
a92713e6 RS |
4998 | if (!match_expression (arg, &offset_expr, offset_reloc)) |
4999 | return FALSE; | |
5000 | ||
5001 | if (offset_reloc[0] != BFD_RELOC_UNUSED) | |
a1d78564 RS |
5002 | /* Relocation operators were used. Accept the arguent and |
5003 | leave the relocation value in offset_expr and offset_relocs | |
5004 | for the caller to process. */ | |
a92713e6 RS |
5005 | return TRUE; |
5006 | ||
5007 | if (offset_expr.X_op != O_constant) | |
a1d78564 | 5008 | { |
60f20e8b RS |
5009 | /* Accept non-constant operands if no later alternative matches, |
5010 | leaving it for the caller to process. */ | |
5011 | if (!arg->lax_match) | |
5012 | return FALSE; | |
a92713e6 RS |
5013 | offset_reloc[0] = BFD_RELOC_LO16; |
5014 | return TRUE; | |
a1d78564 | 5015 | } |
a92713e6 | 5016 | |
a1d78564 RS |
5017 | /* Clear the global state; we're going to install the operand |
5018 | ourselves. */ | |
a92713e6 | 5019 | sval = offset_expr.X_add_number; |
a1d78564 | 5020 | offset_expr.X_op = O_absent; |
60f20e8b RS |
5021 | |
5022 | /* For compatibility with older assemblers, we accept | |
5023 | 0x8000-0xffff as signed 16-bit numbers when only | |
5024 | signed numbers are allowed. */ | |
5025 | if (sval > max_val) | |
5026 | { | |
5027 | max_val = ((1 << operand_base->size) - 1) << operand->shift; | |
5028 | if (!arg->lax_match && sval <= max_val) | |
5029 | return FALSE; | |
5030 | } | |
a1d78564 RS |
5031 | } |
5032 | else | |
5033 | { | |
1a00e612 | 5034 | if (!match_const_int (arg, &sval)) |
a92713e6 | 5035 | return FALSE; |
a1d78564 RS |
5036 | } |
5037 | ||
5038 | arg->last_op_int = sval; | |
5039 | ||
1a00e612 | 5040 | if (sval < min_val || sval > max_val || sval % factor) |
a1d78564 | 5041 | { |
1a00e612 RS |
5042 | match_out_of_range (arg); |
5043 | return FALSE; | |
a1d78564 RS |
5044 | } |
5045 | ||
5046 | uval = (unsigned int) sval >> operand->shift; | |
5047 | uval -= operand->bias; | |
5048 | ||
5049 | /* Handle -mfix-cn63xxp1. */ | |
5050 | if (arg->opnum == 1 | |
5051 | && mips_fix_cn63xxp1 | |
5052 | && !mips_opts.micromips | |
5053 | && strcmp ("pref", arg->insn->insn_mo->name) == 0) | |
5054 | switch (uval) | |
5055 | { | |
5056 | case 5: | |
5057 | case 25: | |
5058 | case 26: | |
5059 | case 27: | |
5060 | case 28: | |
5061 | case 29: | |
5062 | case 30: | |
5063 | case 31: | |
5064 | /* These are ok. */ | |
5065 | break; | |
5066 | ||
5067 | default: | |
5068 | /* The rest must be changed to 28. */ | |
5069 | uval = 28; | |
5070 | break; | |
5071 | } | |
5072 | ||
5073 | insn_insert_operand (arg->insn, operand_base, uval); | |
a92713e6 | 5074 | return TRUE; |
a1d78564 RS |
5075 | } |
5076 | ||
5077 | /* OP_MAPPED_INT matcher. */ | |
5078 | ||
a92713e6 | 5079 | static bfd_boolean |
a1d78564 | 5080 | match_mapped_int_operand (struct mips_arg_info *arg, |
a92713e6 | 5081 | const struct mips_operand *operand_base) |
a1d78564 RS |
5082 | { |
5083 | const struct mips_mapped_int_operand *operand; | |
5084 | unsigned int uval, num_vals; | |
5085 | offsetT sval; | |
5086 | ||
5087 | operand = (const struct mips_mapped_int_operand *) operand_base; | |
1a00e612 | 5088 | if (!match_const_int (arg, &sval)) |
a92713e6 | 5089 | return FALSE; |
a1d78564 RS |
5090 | |
5091 | num_vals = 1 << operand_base->size; | |
5092 | for (uval = 0; uval < num_vals; uval++) | |
5093 | if (operand->int_map[uval] == sval) | |
5094 | break; | |
5095 | if (uval == num_vals) | |
1a00e612 RS |
5096 | { |
5097 | match_out_of_range (arg); | |
5098 | return FALSE; | |
5099 | } | |
a1d78564 RS |
5100 | |
5101 | insn_insert_operand (arg->insn, operand_base, uval); | |
a92713e6 | 5102 | return TRUE; |
a1d78564 RS |
5103 | } |
5104 | ||
5105 | /* OP_MSB matcher. */ | |
5106 | ||
a92713e6 | 5107 | static bfd_boolean |
a1d78564 | 5108 | match_msb_operand (struct mips_arg_info *arg, |
a92713e6 | 5109 | const struct mips_operand *operand_base) |
a1d78564 RS |
5110 | { |
5111 | const struct mips_msb_operand *operand; | |
5112 | int min_val, max_val, max_high; | |
5113 | offsetT size, sval, high; | |
5114 | ||
5115 | operand = (const struct mips_msb_operand *) operand_base; | |
5116 | min_val = operand->bias; | |
5117 | max_val = min_val + (1 << operand_base->size) - 1; | |
5118 | max_high = operand->opsize; | |
5119 | ||
1a00e612 | 5120 | if (!match_const_int (arg, &size)) |
a92713e6 | 5121 | return FALSE; |
a1d78564 RS |
5122 | |
5123 | high = size + arg->last_op_int; | |
5124 | sval = operand->add_lsb ? high : size; | |
5125 | ||
5126 | if (size < 0 || high > max_high || sval < min_val || sval > max_val) | |
5127 | { | |
1a00e612 RS |
5128 | match_out_of_range (arg); |
5129 | return FALSE; | |
a1d78564 RS |
5130 | } |
5131 | insn_insert_operand (arg->insn, operand_base, sval - min_val); | |
a92713e6 | 5132 | return TRUE; |
a1d78564 RS |
5133 | } |
5134 | ||
5135 | /* OP_REG matcher. */ | |
5136 | ||
a92713e6 | 5137 | static bfd_boolean |
a1d78564 | 5138 | match_reg_operand (struct mips_arg_info *arg, |
a92713e6 | 5139 | const struct mips_operand *operand_base) |
a1d78564 RS |
5140 | { |
5141 | const struct mips_reg_operand *operand; | |
a92713e6 | 5142 | unsigned int regno, uval, num_vals; |
a1d78564 RS |
5143 | |
5144 | operand = (const struct mips_reg_operand *) operand_base; | |
a92713e6 RS |
5145 | if (!match_reg (arg, operand->reg_type, ®no)) |
5146 | return FALSE; | |
a1d78564 RS |
5147 | |
5148 | if (operand->reg_map) | |
5149 | { | |
5150 | num_vals = 1 << operand->root.size; | |
5151 | for (uval = 0; uval < num_vals; uval++) | |
5152 | if (operand->reg_map[uval] == regno) | |
5153 | break; | |
5154 | if (num_vals == uval) | |
a92713e6 | 5155 | return FALSE; |
a1d78564 RS |
5156 | } |
5157 | else | |
5158 | uval = regno; | |
5159 | ||
a1d78564 RS |
5160 | arg->last_regno = regno; |
5161 | if (arg->opnum == 1) | |
5162 | arg->dest_regno = regno; | |
5163 | insn_insert_operand (arg->insn, operand_base, uval); | |
a92713e6 | 5164 | return TRUE; |
a1d78564 RS |
5165 | } |
5166 | ||
5167 | /* OP_REG_PAIR matcher. */ | |
5168 | ||
a92713e6 | 5169 | static bfd_boolean |
a1d78564 | 5170 | match_reg_pair_operand (struct mips_arg_info *arg, |
a92713e6 | 5171 | const struct mips_operand *operand_base) |
a1d78564 RS |
5172 | { |
5173 | const struct mips_reg_pair_operand *operand; | |
a92713e6 | 5174 | unsigned int regno1, regno2, uval, num_vals; |
a1d78564 RS |
5175 | |
5176 | operand = (const struct mips_reg_pair_operand *) operand_base; | |
a92713e6 RS |
5177 | if (!match_reg (arg, operand->reg_type, ®no1) |
5178 | || !match_char (arg, ',') | |
5179 | || !match_reg (arg, operand->reg_type, ®no2)) | |
5180 | return FALSE; | |
a1d78564 RS |
5181 | |
5182 | num_vals = 1 << operand_base->size; | |
5183 | for (uval = 0; uval < num_vals; uval++) | |
5184 | if (operand->reg1_map[uval] == regno1 && operand->reg2_map[uval] == regno2) | |
5185 | break; | |
5186 | if (uval == num_vals) | |
a92713e6 | 5187 | return FALSE; |
a1d78564 | 5188 | |
a1d78564 | 5189 | insn_insert_operand (arg->insn, operand_base, uval); |
a92713e6 | 5190 | return TRUE; |
a1d78564 RS |
5191 | } |
5192 | ||
5193 | /* OP_PCREL matcher. The caller chooses the relocation type. */ | |
5194 | ||
a92713e6 RS |
5195 | static bfd_boolean |
5196 | match_pcrel_operand (struct mips_arg_info *arg) | |
a1d78564 | 5197 | { |
a92713e6 RS |
5198 | bfd_reloc_code_real_type r[3]; |
5199 | ||
5200 | return match_expression (arg, &offset_expr, r) && r[0] == BFD_RELOC_UNUSED; | |
a1d78564 RS |
5201 | } |
5202 | ||
5203 | /* OP_PERF_REG matcher. */ | |
5204 | ||
a92713e6 | 5205 | static bfd_boolean |
a1d78564 | 5206 | match_perf_reg_operand (struct mips_arg_info *arg, |
a92713e6 | 5207 | const struct mips_operand *operand) |
a1d78564 RS |
5208 | { |
5209 | offsetT sval; | |
5210 | ||
1a00e612 | 5211 | if (!match_const_int (arg, &sval)) |
a92713e6 | 5212 | return FALSE; |
a1d78564 RS |
5213 | |
5214 | if (sval != 0 | |
5215 | && (sval != 1 | |
5216 | || (mips_opts.arch == CPU_R5900 | |
5217 | && (strcmp (arg->insn->insn_mo->name, "mfps") == 0 | |
5218 | || strcmp (arg->insn->insn_mo->name, "mtps") == 0)))) | |
5219 | { | |
1a00e612 RS |
5220 | set_insn_error (arg->argnum, _("invalid performance register")); |
5221 | return FALSE; | |
a1d78564 RS |
5222 | } |
5223 | ||
5224 | insn_insert_operand (arg->insn, operand, sval); | |
a92713e6 | 5225 | return TRUE; |
a1d78564 RS |
5226 | } |
5227 | ||
5228 | /* OP_ADDIUSP matcher. */ | |
5229 | ||
a92713e6 | 5230 | static bfd_boolean |
a1d78564 | 5231 | match_addiusp_operand (struct mips_arg_info *arg, |
a92713e6 | 5232 | const struct mips_operand *operand) |
a1d78564 RS |
5233 | { |
5234 | offsetT sval; | |
5235 | unsigned int uval; | |
5236 | ||
1a00e612 | 5237 | if (!match_const_int (arg, &sval)) |
a92713e6 | 5238 | return FALSE; |
a1d78564 RS |
5239 | |
5240 | if (sval % 4) | |
1a00e612 RS |
5241 | { |
5242 | match_out_of_range (arg); | |
5243 | return FALSE; | |
5244 | } | |
a1d78564 RS |
5245 | |
5246 | sval /= 4; | |
5247 | if (!(sval >= -258 && sval <= 257) || (sval >= -2 && sval <= 1)) | |
1a00e612 RS |
5248 | { |
5249 | match_out_of_range (arg); | |
5250 | return FALSE; | |
5251 | } | |
a1d78564 RS |
5252 | |
5253 | uval = (unsigned int) sval; | |
5254 | uval = ((uval >> 1) & ~0xff) | (uval & 0xff); | |
5255 | insn_insert_operand (arg->insn, operand, uval); | |
a92713e6 | 5256 | return TRUE; |
a1d78564 RS |
5257 | } |
5258 | ||
5259 | /* OP_CLO_CLZ_DEST matcher. */ | |
5260 | ||
a92713e6 | 5261 | static bfd_boolean |
a1d78564 | 5262 | match_clo_clz_dest_operand (struct mips_arg_info *arg, |
a92713e6 | 5263 | const struct mips_operand *operand) |
a1d78564 RS |
5264 | { |
5265 | unsigned int regno; | |
5266 | ||
a92713e6 RS |
5267 | if (!match_reg (arg, OP_REG_GP, ®no)) |
5268 | return FALSE; | |
a1d78564 | 5269 | |
a1d78564 | 5270 | insn_insert_operand (arg->insn, operand, regno | (regno << 5)); |
a92713e6 | 5271 | return TRUE; |
a1d78564 RS |
5272 | } |
5273 | ||
7361da2c AB |
5274 | /* OP_CHECK_PREV matcher. */ |
5275 | ||
5276 | static bfd_boolean | |
5277 | match_check_prev_operand (struct mips_arg_info *arg, | |
5278 | const struct mips_operand *operand_base) | |
5279 | { | |
5280 | const struct mips_check_prev_operand *operand; | |
5281 | unsigned int regno; | |
5282 | ||
5283 | operand = (const struct mips_check_prev_operand *) operand_base; | |
5284 | ||
5285 | if (!match_reg (arg, OP_REG_GP, ®no)) | |
5286 | return FALSE; | |
5287 | ||
5288 | if (!operand->zero_ok && regno == 0) | |
5289 | return FALSE; | |
5290 | ||
5291 | if ((operand->less_than_ok && regno < arg->last_regno) | |
5292 | || (operand->greater_than_ok && regno > arg->last_regno) | |
5293 | || (operand->equal_ok && regno == arg->last_regno)) | |
5294 | { | |
5295 | arg->last_regno = regno; | |
5296 | insn_insert_operand (arg->insn, operand_base, regno); | |
5297 | return TRUE; | |
5298 | } | |
5299 | ||
5300 | return FALSE; | |
5301 | } | |
5302 | ||
5303 | /* OP_SAME_RS_RT matcher. */ | |
5304 | ||
5305 | static bfd_boolean | |
5306 | match_same_rs_rt_operand (struct mips_arg_info *arg, | |
5307 | const struct mips_operand *operand) | |
5308 | { | |
5309 | unsigned int regno; | |
5310 | ||
5311 | if (!match_reg (arg, OP_REG_GP, ®no)) | |
5312 | return FALSE; | |
5313 | ||
5314 | if (regno == 0) | |
5315 | { | |
5316 | set_insn_error (arg->argnum, _("the source register must not be $0")); | |
5317 | return FALSE; | |
5318 | } | |
5319 | ||
5320 | arg->last_regno = regno; | |
5321 | ||
5322 | insn_insert_operand (arg->insn, operand, regno | (regno << 5)); | |
5323 | return TRUE; | |
5324 | } | |
5325 | ||
a1d78564 RS |
5326 | /* OP_LWM_SWM_LIST matcher. */ |
5327 | ||
a92713e6 | 5328 | static bfd_boolean |
a1d78564 | 5329 | match_lwm_swm_list_operand (struct mips_arg_info *arg, |
a92713e6 | 5330 | const struct mips_operand *operand) |
a1d78564 | 5331 | { |
a92713e6 RS |
5332 | unsigned int reglist, sregs, ra, regno1, regno2; |
5333 | struct mips_arg_info reset; | |
a1d78564 | 5334 | |
a92713e6 RS |
5335 | reglist = 0; |
5336 | if (!match_reg_range (arg, OP_REG_GP, ®no1, ®no2)) | |
5337 | return FALSE; | |
5338 | do | |
5339 | { | |
5340 | if (regno2 == FP && regno1 >= S0 && regno1 <= S7) | |
5341 | { | |
5342 | reglist |= 1 << FP; | |
5343 | regno2 = S7; | |
5344 | } | |
5345 | reglist |= ((1U << regno2 << 1) - 1) & -(1U << regno1); | |
5346 | reset = *arg; | |
5347 | } | |
5348 | while (match_char (arg, ',') | |
5349 | && match_reg_range (arg, OP_REG_GP, ®no1, ®no2)); | |
5350 | *arg = reset; | |
a1d78564 RS |
5351 | |
5352 | if (operand->size == 2) | |
5353 | { | |
5354 | /* The list must include both ra and s0-sN, for 0 <= N <= 3. E.g.: | |
5355 | ||
5356 | s0, ra | |
5357 | s0, s1, ra, s2, s3 | |
5358 | s0-s2, ra | |
5359 | ||
5360 | and any permutations of these. */ | |
5361 | if ((reglist & 0xfff1ffff) != 0x80010000) | |
a92713e6 | 5362 | return FALSE; |
a1d78564 RS |
5363 | |
5364 | sregs = (reglist >> 17) & 7; | |
5365 | ra = 0; | |
5366 | } | |
5367 | else | |
5368 | { | |
5369 | /* The list must include at least one of ra and s0-sN, | |
5370 | for 0 <= N <= 8. (Note that there is a gap between s7 and s8, | |
5371 | which are $23 and $30 respectively.) E.g.: | |
5372 | ||
5373 | ra | |
5374 | s0 | |
5375 | ra, s0, s1, s2 | |
5376 | s0-s8 | |
5377 | s0-s5, ra | |
5378 | ||
5379 | and any permutations of these. */ | |
5380 | if ((reglist & 0x3f00ffff) != 0) | |
a92713e6 | 5381 | return FALSE; |
a1d78564 RS |
5382 | |
5383 | ra = (reglist >> 27) & 0x10; | |
5384 | sregs = ((reglist >> 22) & 0x100) | ((reglist >> 16) & 0xff); | |
5385 | } | |
5386 | sregs += 1; | |
5387 | if ((sregs & -sregs) != sregs) | |
a92713e6 | 5388 | return FALSE; |
a1d78564 RS |
5389 | |
5390 | insn_insert_operand (arg->insn, operand, (ffs (sregs) - 1) | ra); | |
a92713e6 | 5391 | return TRUE; |
a1d78564 RS |
5392 | } |
5393 | ||
364215c8 RS |
5394 | /* OP_ENTRY_EXIT_LIST matcher. */ |
5395 | ||
a92713e6 | 5396 | static unsigned int |
364215c8 | 5397 | match_entry_exit_operand (struct mips_arg_info *arg, |
a92713e6 | 5398 | const struct mips_operand *operand) |
364215c8 RS |
5399 | { |
5400 | unsigned int mask; | |
5401 | bfd_boolean is_exit; | |
5402 | ||
5403 | /* The format is the same for both ENTRY and EXIT, but the constraints | |
5404 | are different. */ | |
5405 | is_exit = strcmp (arg->insn->insn_mo->name, "exit") == 0; | |
5406 | mask = (is_exit ? 7 << 3 : 0); | |
a92713e6 | 5407 | do |
364215c8 RS |
5408 | { |
5409 | unsigned int regno1, regno2; | |
5410 | bfd_boolean is_freg; | |
5411 | ||
a92713e6 | 5412 | if (match_reg_range (arg, OP_REG_GP, ®no1, ®no2)) |
364215c8 | 5413 | is_freg = FALSE; |
a92713e6 | 5414 | else if (match_reg_range (arg, OP_REG_FP, ®no1, ®no2)) |
364215c8 RS |
5415 | is_freg = TRUE; |
5416 | else | |
a92713e6 | 5417 | return FALSE; |
364215c8 RS |
5418 | |
5419 | if (is_exit && is_freg && regno1 == 0 && regno2 < 2) | |
5420 | { | |
5421 | mask &= ~(7 << 3); | |
5422 | mask |= (5 + regno2) << 3; | |
5423 | } | |
5424 | else if (!is_exit && regno1 == 4 && regno2 >= 4 && regno2 <= 7) | |
5425 | mask |= (regno2 - 3) << 3; | |
5426 | else if (regno1 == 16 && regno2 >= 16 && regno2 <= 17) | |
5427 | mask |= (regno2 - 15) << 1; | |
5428 | else if (regno1 == RA && regno2 == RA) | |
5429 | mask |= 1; | |
5430 | else | |
a92713e6 | 5431 | return FALSE; |
364215c8 | 5432 | } |
a92713e6 RS |
5433 | while (match_char (arg, ',')); |
5434 | ||
364215c8 | 5435 | insn_insert_operand (arg->insn, operand, mask); |
a92713e6 | 5436 | return TRUE; |
364215c8 RS |
5437 | } |
5438 | ||
5439 | /* OP_SAVE_RESTORE_LIST matcher. */ | |
5440 | ||
a92713e6 RS |
5441 | static bfd_boolean |
5442 | match_save_restore_list_operand (struct mips_arg_info *arg) | |
364215c8 RS |
5443 | { |
5444 | unsigned int opcode, args, statics, sregs; | |
5445 | unsigned int num_frame_sizes, num_args, num_statics, num_sregs; | |
364215c8 | 5446 | offsetT frame_size; |
364215c8 | 5447 | |
364215c8 RS |
5448 | opcode = arg->insn->insn_opcode; |
5449 | frame_size = 0; | |
5450 | num_frame_sizes = 0; | |
5451 | args = 0; | |
5452 | statics = 0; | |
5453 | sregs = 0; | |
a92713e6 | 5454 | do |
364215c8 RS |
5455 | { |
5456 | unsigned int regno1, regno2; | |
5457 | ||
a92713e6 | 5458 | if (arg->token->type == OT_INTEGER) |
364215c8 RS |
5459 | { |
5460 | /* Handle the frame size. */ | |
1a00e612 | 5461 | if (!match_const_int (arg, &frame_size)) |
a92713e6 | 5462 | return FALSE; |
364215c8 | 5463 | num_frame_sizes += 1; |
364215c8 RS |
5464 | } |
5465 | else | |
5466 | { | |
a92713e6 RS |
5467 | if (!match_reg_range (arg, OP_REG_GP, ®no1, ®no2)) |
5468 | return FALSE; | |
364215c8 RS |
5469 | |
5470 | while (regno1 <= regno2) | |
5471 | { | |
5472 | if (regno1 >= 4 && regno1 <= 7) | |
5473 | { | |
5474 | if (num_frame_sizes == 0) | |
5475 | /* args $a0-$a3 */ | |
5476 | args |= 1 << (regno1 - 4); | |
5477 | else | |
5478 | /* statics $a0-$a3 */ | |
5479 | statics |= 1 << (regno1 - 4); | |
5480 | } | |
5481 | else if (regno1 >= 16 && regno1 <= 23) | |
5482 | /* $s0-$s7 */ | |
5483 | sregs |= 1 << (regno1 - 16); | |
5484 | else if (regno1 == 30) | |
5485 | /* $s8 */ | |
5486 | sregs |= 1 << 8; | |
5487 | else if (regno1 == 31) | |
5488 | /* Add $ra to insn. */ | |
5489 | opcode |= 0x40; | |
5490 | else | |
a92713e6 | 5491 | return FALSE; |
364215c8 RS |
5492 | regno1 += 1; |
5493 | if (regno1 == 24) | |
5494 | regno1 = 30; | |
5495 | } | |
5496 | } | |
364215c8 | 5497 | } |
a92713e6 | 5498 | while (match_char (arg, ',')); |
364215c8 RS |
5499 | |
5500 | /* Encode args/statics combination. */ | |
5501 | if (args & statics) | |
a92713e6 | 5502 | return FALSE; |
364215c8 RS |
5503 | else if (args == 0xf) |
5504 | /* All $a0-$a3 are args. */ | |
5505 | opcode |= MIPS16_ALL_ARGS << 16; | |
5506 | else if (statics == 0xf) | |
5507 | /* All $a0-$a3 are statics. */ | |
5508 | opcode |= MIPS16_ALL_STATICS << 16; | |
5509 | else | |
5510 | { | |
5511 | /* Count arg registers. */ | |
5512 | num_args = 0; | |
5513 | while (args & 0x1) | |
5514 | { | |
5515 | args >>= 1; | |
5516 | num_args += 1; | |
5517 | } | |
5518 | if (args != 0) | |
a92713e6 | 5519 | return FALSE; |
364215c8 RS |
5520 | |
5521 | /* Count static registers. */ | |
5522 | num_statics = 0; | |
5523 | while (statics & 0x8) | |
5524 | { | |
5525 | statics = (statics << 1) & 0xf; | |
5526 | num_statics += 1; | |
5527 | } | |
5528 | if (statics != 0) | |
a92713e6 | 5529 | return FALSE; |
364215c8 RS |
5530 | |
5531 | /* Encode args/statics. */ | |
5532 | opcode |= ((num_args << 2) | num_statics) << 16; | |
5533 | } | |
5534 | ||
5535 | /* Encode $s0/$s1. */ | |
5536 | if (sregs & (1 << 0)) /* $s0 */ | |
5537 | opcode |= 0x20; | |
5538 | if (sregs & (1 << 1)) /* $s1 */ | |
5539 | opcode |= 0x10; | |
5540 | sregs >>= 2; | |
5541 | ||
5542 | /* Encode $s2-$s8. */ | |
5543 | num_sregs = 0; | |
5544 | while (sregs & 1) | |
5545 | { | |
5546 | sregs >>= 1; | |
5547 | num_sregs += 1; | |
5548 | } | |
5549 | if (sregs != 0) | |
a92713e6 | 5550 | return FALSE; |
364215c8 RS |
5551 | opcode |= num_sregs << 24; |
5552 | ||
5553 | /* Encode frame size. */ | |
5554 | if (num_frame_sizes == 0) | |
1a00e612 RS |
5555 | { |
5556 | set_insn_error (arg->argnum, _("missing frame size")); | |
5557 | return FALSE; | |
5558 | } | |
5559 | if (num_frame_sizes > 1) | |
5560 | { | |
5561 | set_insn_error (arg->argnum, _("frame size specified twice")); | |
5562 | return FALSE; | |
5563 | } | |
5564 | if ((frame_size & 7) != 0 || frame_size < 0 || frame_size > 0xff * 8) | |
5565 | { | |
5566 | set_insn_error (arg->argnum, _("invalid frame size")); | |
5567 | return FALSE; | |
5568 | } | |
5569 | if (frame_size != 128 || (opcode >> 16) != 0) | |
364215c8 RS |
5570 | { |
5571 | frame_size /= 8; | |
5572 | opcode |= (((frame_size & 0xf0) << 16) | |
5573 | | (frame_size & 0x0f)); | |
5574 | } | |
5575 | ||
364215c8 RS |
5576 | /* Finally build the instruction. */ |
5577 | if ((opcode >> 16) != 0 || frame_size == 0) | |
5578 | opcode |= MIPS16_EXTEND; | |
5579 | arg->insn->insn_opcode = opcode; | |
a92713e6 | 5580 | return TRUE; |
364215c8 RS |
5581 | } |
5582 | ||
a1d78564 RS |
5583 | /* OP_MDMX_IMM_REG matcher. */ |
5584 | ||
a92713e6 | 5585 | static bfd_boolean |
a1d78564 | 5586 | match_mdmx_imm_reg_operand (struct mips_arg_info *arg, |
a92713e6 | 5587 | const struct mips_operand *operand) |
a1d78564 | 5588 | { |
a92713e6 | 5589 | unsigned int regno, uval; |
a1d78564 RS |
5590 | bfd_boolean is_qh; |
5591 | const struct mips_opcode *opcode; | |
5592 | ||
5593 | /* The mips_opcode records whether this is an octobyte or quadhalf | |
5594 | instruction. Start out with that bit in place. */ | |
5595 | opcode = arg->insn->insn_mo; | |
5596 | uval = mips_extract_operand (operand, opcode->match); | |
5597 | is_qh = (uval != 0); | |
5598 | ||
56d438b1 | 5599 | if (arg->token->type == OT_REG) |
a1d78564 RS |
5600 | { |
5601 | if ((opcode->membership & INSN_5400) | |
5602 | && strcmp (opcode->name, "rzu.ob") == 0) | |
5603 | { | |
1a00e612 RS |
5604 | set_insn_error_i (arg->argnum, _("operand %d must be an immediate"), |
5605 | arg->argnum); | |
5606 | return FALSE; | |
a1d78564 RS |
5607 | } |
5608 | ||
56d438b1 CF |
5609 | if (!match_regno (arg, OP_REG_VEC, arg->token->u.regno, ®no)) |
5610 | return FALSE; | |
5611 | ++arg->token; | |
5612 | ||
a1d78564 RS |
5613 | /* Check whether this is a vector register or a broadcast of |
5614 | a single element. */ | |
56d438b1 | 5615 | if (arg->token->type == OT_INTEGER_INDEX) |
a1d78564 | 5616 | { |
56d438b1 | 5617 | if (arg->token->u.index > (is_qh ? 3 : 7)) |
a1d78564 | 5618 | { |
1a00e612 RS |
5619 | set_insn_error (arg->argnum, _("invalid element selector")); |
5620 | return FALSE; | |
a1d78564 | 5621 | } |
56d438b1 CF |
5622 | uval |= arg->token->u.index << (is_qh ? 2 : 1) << 5; |
5623 | ++arg->token; | |
a1d78564 RS |
5624 | } |
5625 | else | |
5626 | { | |
5627 | /* A full vector. */ | |
5628 | if ((opcode->membership & INSN_5400) | |
5629 | && (strcmp (opcode->name, "sll.ob") == 0 | |
5630 | || strcmp (opcode->name, "srl.ob") == 0)) | |
5631 | { | |
1a00e612 RS |
5632 | set_insn_error_i (arg->argnum, _("operand %d must be scalar"), |
5633 | arg->argnum); | |
5634 | return FALSE; | |
a1d78564 RS |
5635 | } |
5636 | ||
5637 | if (is_qh) | |
5638 | uval |= MDMX_FMTSEL_VEC_QH << 5; | |
5639 | else | |
5640 | uval |= MDMX_FMTSEL_VEC_OB << 5; | |
5641 | } | |
a1d78564 RS |
5642 | uval |= regno; |
5643 | } | |
5644 | else | |
5645 | { | |
5646 | offsetT sval; | |
5647 | ||
1a00e612 | 5648 | if (!match_const_int (arg, &sval)) |
a92713e6 | 5649 | return FALSE; |
a1d78564 RS |
5650 | if (sval < 0 || sval > 31) |
5651 | { | |
1a00e612 RS |
5652 | match_out_of_range (arg); |
5653 | return FALSE; | |
a1d78564 RS |
5654 | } |
5655 | uval |= (sval & 31); | |
5656 | if (is_qh) | |
5657 | uval |= MDMX_FMTSEL_IMM_QH << 5; | |
5658 | else | |
5659 | uval |= MDMX_FMTSEL_IMM_OB << 5; | |
5660 | } | |
5661 | insn_insert_operand (arg->insn, operand, uval); | |
a92713e6 | 5662 | return TRUE; |
a1d78564 RS |
5663 | } |
5664 | ||
56d438b1 CF |
5665 | /* OP_IMM_INDEX matcher. */ |
5666 | ||
5667 | static bfd_boolean | |
5668 | match_imm_index_operand (struct mips_arg_info *arg, | |
5669 | const struct mips_operand *operand) | |
5670 | { | |
5671 | unsigned int max_val; | |
5672 | ||
5673 | if (arg->token->type != OT_INTEGER_INDEX) | |
5674 | return FALSE; | |
5675 | ||
5676 | max_val = (1 << operand->size) - 1; | |
5677 | if (arg->token->u.index > max_val) | |
5678 | { | |
5679 | match_out_of_range (arg); | |
5680 | return FALSE; | |
5681 | } | |
5682 | insn_insert_operand (arg->insn, operand, arg->token->u.index); | |
5683 | ++arg->token; | |
5684 | return TRUE; | |
5685 | } | |
5686 | ||
5687 | /* OP_REG_INDEX matcher. */ | |
5688 | ||
5689 | static bfd_boolean | |
5690 | match_reg_index_operand (struct mips_arg_info *arg, | |
5691 | const struct mips_operand *operand) | |
5692 | { | |
5693 | unsigned int regno; | |
5694 | ||
5695 | if (arg->token->type != OT_REG_INDEX) | |
5696 | return FALSE; | |
5697 | ||
5698 | if (!match_regno (arg, OP_REG_GP, arg->token->u.regno, ®no)) | |
5699 | return FALSE; | |
5700 | ||
5701 | insn_insert_operand (arg->insn, operand, regno); | |
5702 | ++arg->token; | |
5703 | return TRUE; | |
5704 | } | |
5705 | ||
a1d78564 RS |
5706 | /* OP_PC matcher. */ |
5707 | ||
a92713e6 RS |
5708 | static bfd_boolean |
5709 | match_pc_operand (struct mips_arg_info *arg) | |
a1d78564 | 5710 | { |
a92713e6 RS |
5711 | if (arg->token->type == OT_REG && (arg->token->u.regno & RTYPE_PC)) |
5712 | { | |
5713 | ++arg->token; | |
5714 | return TRUE; | |
5715 | } | |
5716 | return FALSE; | |
a1d78564 RS |
5717 | } |
5718 | ||
7361da2c AB |
5719 | /* OP_NON_ZERO_REG matcher. */ |
5720 | ||
5721 | static bfd_boolean | |
5722 | match_non_zero_reg_operand (struct mips_arg_info *arg, | |
5723 | const struct mips_operand *operand) | |
5724 | { | |
5725 | unsigned int regno; | |
5726 | ||
5727 | if (!match_reg (arg, OP_REG_GP, ®no)) | |
5728 | return FALSE; | |
5729 | ||
5730 | if (regno == 0) | |
5731 | return FALSE; | |
5732 | ||
5733 | arg->last_regno = regno; | |
5734 | insn_insert_operand (arg->insn, operand, regno); | |
5735 | return TRUE; | |
5736 | } | |
5737 | ||
a1d78564 RS |
5738 | /* OP_REPEAT_DEST_REG and OP_REPEAT_PREV_REG matcher. OTHER_REGNO is the |
5739 | register that we need to match. */ | |
5740 | ||
a92713e6 RS |
5741 | static bfd_boolean |
5742 | match_tied_reg_operand (struct mips_arg_info *arg, unsigned int other_regno) | |
a1d78564 RS |
5743 | { |
5744 | unsigned int regno; | |
5745 | ||
a92713e6 | 5746 | return match_reg (arg, OP_REG_GP, ®no) && regno == other_regno; |
a1d78564 RS |
5747 | } |
5748 | ||
89565f1b RS |
5749 | /* Read a floating-point constant from S for LI.S or LI.D. LENGTH is |
5750 | the length of the value in bytes (4 for float, 8 for double) and | |
5751 | USING_GPRS says whether the destination is a GPR rather than an FPR. | |
5752 | ||
5753 | Return the constant in IMM and OFFSET as follows: | |
5754 | ||
5755 | - If the constant should be loaded via memory, set IMM to O_absent and | |
5756 | OFFSET to the memory address. | |
5757 | ||
5758 | - Otherwise, if the constant should be loaded into two 32-bit registers, | |
5759 | set IMM to the O_constant to load into the high register and OFFSET | |
5760 | to the corresponding value for the low register. | |
5761 | ||
5762 | - Otherwise, set IMM to the full O_constant and set OFFSET to O_absent. | |
5763 | ||
5764 | These constants only appear as the last operand in an instruction, | |
5765 | and every instruction that accepts them in any variant accepts them | |
5766 | in all variants. This means we don't have to worry about backing out | |
5767 | any changes if the instruction does not match. We just match | |
5768 | unconditionally and report an error if the constant is invalid. */ | |
5769 | ||
a92713e6 RS |
5770 | static bfd_boolean |
5771 | match_float_constant (struct mips_arg_info *arg, expressionS *imm, | |
5772 | expressionS *offset, int length, bfd_boolean using_gprs) | |
89565f1b | 5773 | { |
a92713e6 | 5774 | char *p; |
89565f1b RS |
5775 | segT seg, new_seg; |
5776 | subsegT subseg; | |
5777 | const char *newname; | |
a92713e6 | 5778 | unsigned char *data; |
89565f1b RS |
5779 | |
5780 | /* Where the constant is placed is based on how the MIPS assembler | |
5781 | does things: | |
5782 | ||
5783 | length == 4 && using_gprs -- immediate value only | |
5784 | length == 8 && using_gprs -- .rdata or immediate value | |
5785 | length == 4 && !using_gprs -- .lit4 or immediate value | |
5786 | length == 8 && !using_gprs -- .lit8 or immediate value | |
5787 | ||
5788 | The .lit4 and .lit8 sections are only used if permitted by the | |
5789 | -G argument. */ | |
a92713e6 | 5790 | if (arg->token->type != OT_FLOAT) |
1a00e612 RS |
5791 | { |
5792 | set_insn_error (arg->argnum, _("floating-point expression required")); | |
5793 | return FALSE; | |
5794 | } | |
a92713e6 RS |
5795 | |
5796 | gas_assert (arg->token->u.flt.length == length); | |
5797 | data = arg->token->u.flt.data; | |
5798 | ++arg->token; | |
89565f1b RS |
5799 | |
5800 | /* Handle 32-bit constants for which an immediate value is best. */ | |
5801 | if (length == 4 | |
5802 | && (using_gprs | |
5803 | || g_switch_value < 4 | |
5804 | || (data[0] == 0 && data[1] == 0) | |
5805 | || (data[2] == 0 && data[3] == 0))) | |
5806 | { | |
5807 | imm->X_op = O_constant; | |
5808 | if (!target_big_endian) | |
5809 | imm->X_add_number = bfd_getl32 (data); | |
5810 | else | |
5811 | imm->X_add_number = bfd_getb32 (data); | |
5812 | offset->X_op = O_absent; | |
a92713e6 | 5813 | return TRUE; |
89565f1b RS |
5814 | } |
5815 | ||
5816 | /* Handle 64-bit constants for which an immediate value is best. */ | |
5817 | if (length == 8 | |
5818 | && !mips_disable_float_construction | |
351cdf24 MF |
5819 | /* Constants can only be constructed in GPRs and copied to FPRs if the |
5820 | GPRs are at least as wide as the FPRs or MTHC1 is available. | |
5821 | Unlike most tests for 32-bit floating-point registers this check | |
5822 | specifically looks for GPR_SIZE == 32 as the FPXX ABI does not | |
5823 | permit 64-bit moves without MXHC1. | |
5824 | Force the constant into memory otherwise. */ | |
5825 | && (using_gprs | |
5826 | || GPR_SIZE == 64 | |
5827 | || ISA_HAS_MXHC1 (mips_opts.isa) | |
5828 | || FPR_SIZE == 32) | |
89565f1b RS |
5829 | && ((data[0] == 0 && data[1] == 0) |
5830 | || (data[2] == 0 && data[3] == 0)) | |
5831 | && ((data[4] == 0 && data[5] == 0) | |
5832 | || (data[6] == 0 && data[7] == 0))) | |
5833 | { | |
5834 | /* The value is simple enough to load with a couple of instructions. | |
5835 | If using 32-bit registers, set IMM to the high order 32 bits and | |
5836 | OFFSET to the low order 32 bits. Otherwise, set IMM to the entire | |
5837 | 64 bit constant. */ | |
351cdf24 | 5838 | if (GPR_SIZE == 32 || (!using_gprs && FPR_SIZE != 64)) |
89565f1b RS |
5839 | { |
5840 | imm->X_op = O_constant; | |
5841 | offset->X_op = O_constant; | |
5842 | if (!target_big_endian) | |
5843 | { | |
5844 | imm->X_add_number = bfd_getl32 (data + 4); | |
5845 | offset->X_add_number = bfd_getl32 (data); | |
5846 | } | |
5847 | else | |
5848 | { | |
5849 | imm->X_add_number = bfd_getb32 (data); | |
5850 | offset->X_add_number = bfd_getb32 (data + 4); | |
5851 | } | |
5852 | if (offset->X_add_number == 0) | |
5853 | offset->X_op = O_absent; | |
5854 | } | |
5855 | else | |
5856 | { | |
5857 | imm->X_op = O_constant; | |
5858 | if (!target_big_endian) | |
5859 | imm->X_add_number = bfd_getl64 (data); | |
5860 | else | |
5861 | imm->X_add_number = bfd_getb64 (data); | |
5862 | offset->X_op = O_absent; | |
5863 | } | |
a92713e6 | 5864 | return TRUE; |
89565f1b RS |
5865 | } |
5866 | ||
5867 | /* Switch to the right section. */ | |
5868 | seg = now_seg; | |
5869 | subseg = now_subseg; | |
5870 | if (length == 4) | |
5871 | { | |
5872 | gas_assert (!using_gprs && g_switch_value >= 4); | |
5873 | newname = ".lit4"; | |
5874 | } | |
5875 | else | |
5876 | { | |
5877 | if (using_gprs || g_switch_value < 8) | |
5878 | newname = RDATA_SECTION_NAME; | |
5879 | else | |
5880 | newname = ".lit8"; | |
5881 | } | |
5882 | ||
5883 | new_seg = subseg_new (newname, (subsegT) 0); | |
5884 | bfd_set_section_flags (stdoutput, new_seg, | |
5885 | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA); | |
5886 | frag_align (length == 4 ? 2 : 3, 0, 0); | |
5887 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
5888 | record_alignment (new_seg, 4); | |
5889 | else | |
5890 | record_alignment (new_seg, length == 4 ? 2 : 3); | |
5891 | if (seg == now_seg) | |
1661c76c | 5892 | as_bad (_("cannot use `%s' in this section"), arg->insn->insn_mo->name); |
89565f1b RS |
5893 | |
5894 | /* Set the argument to the current address in the section. */ | |
5895 | imm->X_op = O_absent; | |
5896 | offset->X_op = O_symbol; | |
5897 | offset->X_add_symbol = symbol_temp_new_now (); | |
5898 | offset->X_add_number = 0; | |
5899 | ||
5900 | /* Put the floating point number into the section. */ | |
5901 | p = frag_more (length); | |
5902 | memcpy (p, data, length); | |
5903 | ||
5904 | /* Switch back to the original section. */ | |
5905 | subseg_set (seg, subseg); | |
a92713e6 | 5906 | return TRUE; |
89565f1b RS |
5907 | } |
5908 | ||
14daeee3 RS |
5909 | /* OP_VU0_SUFFIX and OP_VU0_MATCH_SUFFIX matcher; MATCH_P selects between |
5910 | them. */ | |
5911 | ||
5912 | static bfd_boolean | |
5913 | match_vu0_suffix_operand (struct mips_arg_info *arg, | |
5914 | const struct mips_operand *operand, | |
5915 | bfd_boolean match_p) | |
5916 | { | |
5917 | unsigned int uval; | |
5918 | ||
5919 | /* The operand can be an XYZW mask or a single 2-bit channel index | |
5920 | (with X being 0). */ | |
5921 | gas_assert (operand->size == 2 || operand->size == 4); | |
5922 | ||
ee5734f0 | 5923 | /* The suffix can be omitted when it is already part of the opcode. */ |
14daeee3 | 5924 | if (arg->token->type != OT_CHANNELS) |
ee5734f0 | 5925 | return match_p; |
14daeee3 RS |
5926 | |
5927 | uval = arg->token->u.channels; | |
5928 | if (operand->size == 2) | |
5929 | { | |
5930 | /* Check that a single bit is set and convert it into a 2-bit index. */ | |
5931 | if ((uval & -uval) != uval) | |
5932 | return FALSE; | |
5933 | uval = 4 - ffs (uval); | |
5934 | } | |
5935 | ||
5936 | if (match_p && insn_extract_operand (arg->insn, operand) != uval) | |
5937 | return FALSE; | |
5938 | ||
5939 | ++arg->token; | |
5940 | if (!match_p) | |
5941 | insn_insert_operand (arg->insn, operand, uval); | |
5942 | return TRUE; | |
5943 | } | |
5944 | ||
a1d78564 RS |
5945 | /* S is the text seen for ARG. Match it against OPERAND. Return the end |
5946 | of the argument text if the match is successful, otherwise return null. */ | |
5947 | ||
a92713e6 | 5948 | static bfd_boolean |
a1d78564 | 5949 | match_operand (struct mips_arg_info *arg, |
a92713e6 | 5950 | const struct mips_operand *operand) |
a1d78564 RS |
5951 | { |
5952 | switch (operand->type) | |
5953 | { | |
5954 | case OP_INT: | |
a92713e6 | 5955 | return match_int_operand (arg, operand); |
a1d78564 RS |
5956 | |
5957 | case OP_MAPPED_INT: | |
a92713e6 | 5958 | return match_mapped_int_operand (arg, operand); |
a1d78564 RS |
5959 | |
5960 | case OP_MSB: | |
a92713e6 | 5961 | return match_msb_operand (arg, operand); |
a1d78564 RS |
5962 | |
5963 | case OP_REG: | |
0f35dbc4 | 5964 | case OP_OPTIONAL_REG: |
a92713e6 | 5965 | return match_reg_operand (arg, operand); |
a1d78564 RS |
5966 | |
5967 | case OP_REG_PAIR: | |
a92713e6 | 5968 | return match_reg_pair_operand (arg, operand); |
a1d78564 RS |
5969 | |
5970 | case OP_PCREL: | |
a92713e6 | 5971 | return match_pcrel_operand (arg); |
a1d78564 RS |
5972 | |
5973 | case OP_PERF_REG: | |
a92713e6 | 5974 | return match_perf_reg_operand (arg, operand); |
a1d78564 RS |
5975 | |
5976 | case OP_ADDIUSP_INT: | |
a92713e6 | 5977 | return match_addiusp_operand (arg, operand); |
a1d78564 RS |
5978 | |
5979 | case OP_CLO_CLZ_DEST: | |
a92713e6 | 5980 | return match_clo_clz_dest_operand (arg, operand); |
a1d78564 RS |
5981 | |
5982 | case OP_LWM_SWM_LIST: | |
a92713e6 | 5983 | return match_lwm_swm_list_operand (arg, operand); |
a1d78564 RS |
5984 | |
5985 | case OP_ENTRY_EXIT_LIST: | |
a92713e6 | 5986 | return match_entry_exit_operand (arg, operand); |
364215c8 | 5987 | |
a1d78564 | 5988 | case OP_SAVE_RESTORE_LIST: |
a92713e6 | 5989 | return match_save_restore_list_operand (arg); |
a1d78564 RS |
5990 | |
5991 | case OP_MDMX_IMM_REG: | |
a92713e6 | 5992 | return match_mdmx_imm_reg_operand (arg, operand); |
a1d78564 RS |
5993 | |
5994 | case OP_REPEAT_DEST_REG: | |
a92713e6 | 5995 | return match_tied_reg_operand (arg, arg->dest_regno); |
a1d78564 RS |
5996 | |
5997 | case OP_REPEAT_PREV_REG: | |
a92713e6 | 5998 | return match_tied_reg_operand (arg, arg->last_regno); |
a1d78564 RS |
5999 | |
6000 | case OP_PC: | |
a92713e6 | 6001 | return match_pc_operand (arg); |
14daeee3 RS |
6002 | |
6003 | case OP_VU0_SUFFIX: | |
6004 | return match_vu0_suffix_operand (arg, operand, FALSE); | |
6005 | ||
6006 | case OP_VU0_MATCH_SUFFIX: | |
6007 | return match_vu0_suffix_operand (arg, operand, TRUE); | |
56d438b1 CF |
6008 | |
6009 | case OP_IMM_INDEX: | |
6010 | return match_imm_index_operand (arg, operand); | |
6011 | ||
6012 | case OP_REG_INDEX: | |
6013 | return match_reg_index_operand (arg, operand); | |
7361da2c AB |
6014 | |
6015 | case OP_SAME_RS_RT: | |
6016 | return match_same_rs_rt_operand (arg, operand); | |
6017 | ||
6018 | case OP_CHECK_PREV: | |
6019 | return match_check_prev_operand (arg, operand); | |
6020 | ||
6021 | case OP_NON_ZERO_REG: | |
6022 | return match_non_zero_reg_operand (arg, operand); | |
a1d78564 RS |
6023 | } |
6024 | abort (); | |
6025 | } | |
6026 | ||
6027 | /* ARG is the state after successfully matching an instruction. | |
6028 | Issue any queued-up warnings. */ | |
6029 | ||
6030 | static void | |
6031 | check_completed_insn (struct mips_arg_info *arg) | |
6032 | { | |
6033 | if (arg->seen_at) | |
6034 | { | |
6035 | if (AT == ATREG) | |
1661c76c | 6036 | as_warn (_("used $at without \".set noat\"")); |
a1d78564 | 6037 | else |
1661c76c | 6038 | as_warn (_("used $%u with \".set at=$%u\""), AT, AT); |
a1d78564 RS |
6039 | } |
6040 | } | |
a1d78564 | 6041 | |
85fcb30f RS |
6042 | /* Return true if modifying general-purpose register REG needs a delay. */ |
6043 | ||
6044 | static bfd_boolean | |
6045 | reg_needs_delay (unsigned int reg) | |
6046 | { | |
6047 | unsigned long prev_pinfo; | |
6048 | ||
6049 | prev_pinfo = history[0].insn_mo->pinfo; | |
6050 | if (!mips_opts.noreorder | |
67dc82bc | 6051 | && (((prev_pinfo & INSN_LOAD_MEMORY) && !gpr_interlocks) |
43885403 | 6052 | || ((prev_pinfo & INSN_LOAD_COPROC) && !cop_interlocks)) |
85fcb30f RS |
6053 | && (gpr_write_mask (&history[0]) & (1 << reg))) |
6054 | return TRUE; | |
6055 | ||
6056 | return FALSE; | |
6057 | } | |
6058 | ||
71400594 RS |
6059 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
6060 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
6061 | by VR4120 errata. */ | |
4d7206a2 | 6062 | |
71400594 RS |
6063 | static unsigned int |
6064 | classify_vr4120_insn (const char *name) | |
252b5132 | 6065 | { |
71400594 RS |
6066 | if (strncmp (name, "macc", 4) == 0) |
6067 | return FIX_VR4120_MACC; | |
6068 | if (strncmp (name, "dmacc", 5) == 0) | |
6069 | return FIX_VR4120_DMACC; | |
6070 | if (strncmp (name, "mult", 4) == 0) | |
6071 | return FIX_VR4120_MULT; | |
6072 | if (strncmp (name, "dmult", 5) == 0) | |
6073 | return FIX_VR4120_DMULT; | |
6074 | if (strstr (name, "div")) | |
6075 | return FIX_VR4120_DIV; | |
6076 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
6077 | return FIX_VR4120_MTHILO; | |
6078 | return NUM_FIX_VR4120_CLASSES; | |
6079 | } | |
252b5132 | 6080 | |
a8d14a88 CM |
6081 | #define INSN_ERET 0x42000018 |
6082 | #define INSN_DERET 0x4200001f | |
6083 | #define INSN_DMULT 0x1c | |
6084 | #define INSN_DMULTU 0x1d | |
ff239038 | 6085 | |
71400594 RS |
6086 | /* Return the number of instructions that must separate INSN1 and INSN2, |
6087 | where INSN1 is the earlier instruction. Return the worst-case value | |
6088 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 6089 | |
71400594 RS |
6090 | static unsigned int |
6091 | insns_between (const struct mips_cl_insn *insn1, | |
6092 | const struct mips_cl_insn *insn2) | |
6093 | { | |
6094 | unsigned long pinfo1, pinfo2; | |
4c260379 | 6095 | unsigned int mask; |
71400594 | 6096 | |
85fcb30f RS |
6097 | /* If INFO2 is null, pessimistically assume that all flags are set for |
6098 | the second instruction. */ | |
71400594 RS |
6099 | pinfo1 = insn1->insn_mo->pinfo; |
6100 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 6101 | |
71400594 RS |
6102 | /* For most targets, write-after-read dependencies on the HI and LO |
6103 | registers must be separated by at least two instructions. */ | |
6104 | if (!hilo_interlocks) | |
252b5132 | 6105 | { |
71400594 RS |
6106 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
6107 | return 2; | |
6108 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
6109 | return 2; | |
6110 | } | |
6111 | ||
6112 | /* If we're working around r7000 errata, there must be two instructions | |
6113 | between an mfhi or mflo and any instruction that uses the result. */ | |
6114 | if (mips_7000_hilo_fix | |
df58fc94 | 6115 | && !mips_opts.micromips |
71400594 | 6116 | && MF_HILO_INSN (pinfo1) |
85fcb30f | 6117 | && (insn2 == NULL || (gpr_read_mask (insn2) & gpr_write_mask (insn1)))) |
71400594 RS |
6118 | return 2; |
6119 | ||
ff239038 CM |
6120 | /* If we're working around 24K errata, one instruction is required |
6121 | if an ERET or DERET is followed by a branch instruction. */ | |
df58fc94 | 6122 | if (mips_fix_24k && !mips_opts.micromips) |
ff239038 CM |
6123 | { |
6124 | if (insn1->insn_opcode == INSN_ERET | |
6125 | || insn1->insn_opcode == INSN_DERET) | |
6126 | { | |
6127 | if (insn2 == NULL | |
6128 | || insn2->insn_opcode == INSN_ERET | |
6129 | || insn2->insn_opcode == INSN_DERET | |
11625dd8 | 6130 | || delayed_branch_p (insn2)) |
ff239038 CM |
6131 | return 1; |
6132 | } | |
6133 | } | |
6134 | ||
a8d14a88 CM |
6135 | /* If we're working around PMC RM7000 errata, there must be three |
6136 | nops between a dmult and a load instruction. */ | |
6137 | if (mips_fix_rm7000 && !mips_opts.micromips) | |
6138 | { | |
6139 | if ((insn1->insn_opcode & insn1->insn_mo->mask) == INSN_DMULT | |
6140 | || (insn1->insn_opcode & insn1->insn_mo->mask) == INSN_DMULTU) | |
6141 | { | |
6142 | if (pinfo2 & INSN_LOAD_MEMORY) | |
6143 | return 3; | |
6144 | } | |
6145 | } | |
6146 | ||
71400594 RS |
6147 | /* If working around VR4120 errata, check for combinations that need |
6148 | a single intervening instruction. */ | |
df58fc94 | 6149 | if (mips_fix_vr4120 && !mips_opts.micromips) |
71400594 RS |
6150 | { |
6151 | unsigned int class1, class2; | |
252b5132 | 6152 | |
71400594 RS |
6153 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
6154 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 6155 | { |
71400594 RS |
6156 | if (insn2 == NULL) |
6157 | return 1; | |
6158 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
6159 | if (vr4120_conflicts[class1] & (1 << class2)) | |
6160 | return 1; | |
252b5132 | 6161 | } |
71400594 RS |
6162 | } |
6163 | ||
df58fc94 | 6164 | if (!HAVE_CODE_COMPRESSION) |
71400594 RS |
6165 | { |
6166 | /* Check for GPR or coprocessor load delays. All such delays | |
6167 | are on the RT register. */ | |
6168 | /* Itbl support may require additional care here. */ | |
67dc82bc | 6169 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY)) |
43885403 | 6170 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC))) |
252b5132 | 6171 | { |
85fcb30f | 6172 | if (insn2 == NULL || (gpr_read_mask (insn2) & gpr_write_mask (insn1))) |
71400594 RS |
6173 | return 1; |
6174 | } | |
6175 | ||
6176 | /* Check for generic coprocessor hazards. | |
6177 | ||
6178 | This case is not handled very well. There is no special | |
6179 | knowledge of CP0 handling, and the coprocessors other than | |
6180 | the floating point unit are not distinguished at all. */ | |
6181 | /* Itbl support may require additional care here. FIXME! | |
6182 | Need to modify this to include knowledge about | |
6183 | user specified delays! */ | |
43885403 | 6184 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE)) |
71400594 RS |
6185 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) |
6186 | { | |
6187 | /* Handle cases where INSN1 writes to a known general coprocessor | |
6188 | register. There must be a one instruction delay before INSN2 | |
6189 | if INSN2 reads that register, otherwise no delay is needed. */ | |
4c260379 RS |
6190 | mask = fpr_write_mask (insn1); |
6191 | if (mask != 0) | |
252b5132 | 6192 | { |
4c260379 | 6193 | if (!insn2 || (mask & fpr_read_mask (insn2)) != 0) |
71400594 | 6194 | return 1; |
252b5132 RH |
6195 | } |
6196 | else | |
6197 | { | |
71400594 RS |
6198 | /* Read-after-write dependencies on the control registers |
6199 | require a two-instruction gap. */ | |
6200 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
6201 | && (pinfo2 & INSN_READ_COND_CODE)) | |
6202 | return 2; | |
6203 | ||
6204 | /* We don't know exactly what INSN1 does. If INSN2 is | |
6205 | also a coprocessor instruction, assume there must be | |
6206 | a one instruction gap. */ | |
6207 | if (pinfo2 & INSN_COP) | |
6208 | return 1; | |
252b5132 RH |
6209 | } |
6210 | } | |
6b76fefe | 6211 | |
71400594 RS |
6212 | /* Check for read-after-write dependencies on the coprocessor |
6213 | control registers in cases where INSN1 does not need a general | |
6214 | coprocessor delay. This means that INSN1 is a floating point | |
6215 | comparison instruction. */ | |
6216 | /* Itbl support may require additional care here. */ | |
6217 | else if (!cop_interlocks | |
6218 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
6219 | && (pinfo2 & INSN_READ_COND_CODE)) | |
6220 | return 1; | |
6221 | } | |
6b76fefe | 6222 | |
7361da2c AB |
6223 | /* Forbidden slots can not contain Control Transfer Instructions (CTIs) |
6224 | CTIs include all branches and jumps, nal, eret, eretnc, deret, wait | |
6225 | and pause. */ | |
6226 | if ((insn1->insn_mo->pinfo2 & INSN2_FORBIDDEN_SLOT) | |
6227 | && ((pinfo2 & INSN_NO_DELAY_SLOT) | |
6228 | || (insn2 && delayed_branch_p (insn2)))) | |
6229 | return 1; | |
6230 | ||
71400594 RS |
6231 | return 0; |
6232 | } | |
6b76fefe | 6233 | |
7d8e00cf RS |
6234 | /* Return the number of nops that would be needed to work around the |
6235 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
932d1a1b RS |
6236 | the MAX_VR4130_NOPS instructions described by HIST. Ignore hazards |
6237 | that are contained within the first IGNORE instructions of HIST. */ | |
7d8e00cf RS |
6238 | |
6239 | static int | |
932d1a1b | 6240 | nops_for_vr4130 (int ignore, const struct mips_cl_insn *hist, |
7d8e00cf RS |
6241 | const struct mips_cl_insn *insn) |
6242 | { | |
4c260379 RS |
6243 | int i, j; |
6244 | unsigned int mask; | |
7d8e00cf RS |
6245 | |
6246 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
6247 | are not affected by the errata. */ | |
6248 | if (insn != 0 | |
6249 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
6250 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
6251 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
6252 | return 0; | |
6253 | ||
6254 | /* Search for the first MFLO or MFHI. */ | |
6255 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
91d6fa6a | 6256 | if (MF_HILO_INSN (hist[i].insn_mo->pinfo)) |
7d8e00cf RS |
6257 | { |
6258 | /* Extract the destination register. */ | |
4c260379 | 6259 | mask = gpr_write_mask (&hist[i]); |
7d8e00cf RS |
6260 | |
6261 | /* No nops are needed if INSN reads that register. */ | |
4c260379 | 6262 | if (insn != NULL && (gpr_read_mask (insn) & mask) != 0) |
7d8e00cf RS |
6263 | return 0; |
6264 | ||
6265 | /* ...or if any of the intervening instructions do. */ | |
6266 | for (j = 0; j < i; j++) | |
4c260379 | 6267 | if (gpr_read_mask (&hist[j]) & mask) |
7d8e00cf RS |
6268 | return 0; |
6269 | ||
932d1a1b RS |
6270 | if (i >= ignore) |
6271 | return MAX_VR4130_NOPS - i; | |
7d8e00cf RS |
6272 | } |
6273 | return 0; | |
6274 | } | |
6275 | ||
15be625d CM |
6276 | #define BASE_REG_EQ(INSN1, INSN2) \ |
6277 | ((((INSN1) >> OP_SH_RS) & OP_MASK_RS) \ | |
6278 | == (((INSN2) >> OP_SH_RS) & OP_MASK_RS)) | |
6279 | ||
6280 | /* Return the minimum alignment for this store instruction. */ | |
6281 | ||
6282 | static int | |
6283 | fix_24k_align_to (const struct mips_opcode *mo) | |
6284 | { | |
6285 | if (strcmp (mo->name, "sh") == 0) | |
6286 | return 2; | |
6287 | ||
6288 | if (strcmp (mo->name, "swc1") == 0 | |
6289 | || strcmp (mo->name, "swc2") == 0 | |
6290 | || strcmp (mo->name, "sw") == 0 | |
6291 | || strcmp (mo->name, "sc") == 0 | |
6292 | || strcmp (mo->name, "s.s") == 0) | |
6293 | return 4; | |
6294 | ||
6295 | if (strcmp (mo->name, "sdc1") == 0 | |
6296 | || strcmp (mo->name, "sdc2") == 0 | |
6297 | || strcmp (mo->name, "s.d") == 0) | |
6298 | return 8; | |
6299 | ||
6300 | /* sb, swl, swr */ | |
6301 | return 1; | |
6302 | } | |
6303 | ||
6304 | struct fix_24k_store_info | |
6305 | { | |
6306 | /* Immediate offset, if any, for this store instruction. */ | |
6307 | short off; | |
6308 | /* Alignment required by this store instruction. */ | |
6309 | int align_to; | |
6310 | /* True for register offsets. */ | |
6311 | int register_offset; | |
6312 | }; | |
6313 | ||
6314 | /* Comparison function used by qsort. */ | |
6315 | ||
6316 | static int | |
6317 | fix_24k_sort (const void *a, const void *b) | |
6318 | { | |
6319 | const struct fix_24k_store_info *pos1 = a; | |
6320 | const struct fix_24k_store_info *pos2 = b; | |
6321 | ||
6322 | return (pos1->off - pos2->off); | |
6323 | } | |
6324 | ||
6325 | /* INSN is a store instruction. Try to record the store information | |
6326 | in STINFO. Return false if the information isn't known. */ | |
6327 | ||
6328 | static bfd_boolean | |
6329 | fix_24k_record_store_info (struct fix_24k_store_info *stinfo, | |
ab9794cf | 6330 | const struct mips_cl_insn *insn) |
15be625d CM |
6331 | { |
6332 | /* The instruction must have a known offset. */ | |
6333 | if (!insn->complete_p || !strstr (insn->insn_mo->args, "o(")) | |
6334 | return FALSE; | |
6335 | ||
6336 | stinfo->off = (insn->insn_opcode >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE; | |
6337 | stinfo->align_to = fix_24k_align_to (insn->insn_mo); | |
6338 | return TRUE; | |
6339 | } | |
6340 | ||
932d1a1b RS |
6341 | /* Return the number of nops that would be needed to work around the 24k |
6342 | "lost data on stores during refill" errata if instruction INSN | |
6343 | immediately followed the 2 instructions described by HIST. | |
6344 | Ignore hazards that are contained within the first IGNORE | |
6345 | instructions of HIST. | |
6346 | ||
6347 | Problem: The FSB (fetch store buffer) acts as an intermediate buffer | |
6348 | for the data cache refills and store data. The following describes | |
6349 | the scenario where the store data could be lost. | |
6350 | ||
6351 | * A data cache miss, due to either a load or a store, causing fill | |
6352 | data to be supplied by the memory subsystem | |
6353 | * The first three doublewords of fill data are returned and written | |
6354 | into the cache | |
6355 | * A sequence of four stores occurs in consecutive cycles around the | |
6356 | final doubleword of the fill: | |
6357 | * Store A | |
6358 | * Store B | |
6359 | * Store C | |
6360 | * Zero, One or more instructions | |
6361 | * Store D | |
6362 | ||
6363 | The four stores A-D must be to different doublewords of the line that | |
6364 | is being filled. The fourth instruction in the sequence above permits | |
6365 | the fill of the final doubleword to be transferred from the FSB into | |
6366 | the cache. In the sequence above, the stores may be either integer | |
6367 | (sb, sh, sw, swr, swl, sc) or coprocessor (swc1/swc2, sdc1/sdc2, | |
6368 | swxc1, sdxc1, suxc1) stores, as long as the four stores are to | |
6369 | different doublewords on the line. If the floating point unit is | |
6370 | running in 1:2 mode, it is not possible to create the sequence above | |
6371 | using only floating point store instructions. | |
15be625d CM |
6372 | |
6373 | In this case, the cache line being filled is incorrectly marked | |
6374 | invalid, thereby losing the data from any store to the line that | |
6375 | occurs between the original miss and the completion of the five | |
6376 | cycle sequence shown above. | |
6377 | ||
932d1a1b | 6378 | The workarounds are: |
15be625d | 6379 | |
932d1a1b RS |
6380 | * Run the data cache in write-through mode. |
6381 | * Insert a non-store instruction between | |
6382 | Store A and Store B or Store B and Store C. */ | |
3739860c | 6383 | |
15be625d | 6384 | static int |
932d1a1b | 6385 | nops_for_24k (int ignore, const struct mips_cl_insn *hist, |
15be625d CM |
6386 | const struct mips_cl_insn *insn) |
6387 | { | |
6388 | struct fix_24k_store_info pos[3]; | |
6389 | int align, i, base_offset; | |
6390 | ||
932d1a1b RS |
6391 | if (ignore >= 2) |
6392 | return 0; | |
6393 | ||
ab9794cf RS |
6394 | /* If the previous instruction wasn't a store, there's nothing to |
6395 | worry about. */ | |
15be625d CM |
6396 | if ((hist[0].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) |
6397 | return 0; | |
6398 | ||
ab9794cf RS |
6399 | /* If the instructions after the previous one are unknown, we have |
6400 | to assume the worst. */ | |
6401 | if (!insn) | |
15be625d CM |
6402 | return 1; |
6403 | ||
ab9794cf RS |
6404 | /* Check whether we are dealing with three consecutive stores. */ |
6405 | if ((insn->insn_mo->pinfo & INSN_STORE_MEMORY) == 0 | |
6406 | || (hist[1].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) | |
15be625d CM |
6407 | return 0; |
6408 | ||
6409 | /* If we don't know the relationship between the store addresses, | |
6410 | assume the worst. */ | |
ab9794cf | 6411 | if (!BASE_REG_EQ (insn->insn_opcode, hist[0].insn_opcode) |
15be625d CM |
6412 | || !BASE_REG_EQ (insn->insn_opcode, hist[1].insn_opcode)) |
6413 | return 1; | |
6414 | ||
6415 | if (!fix_24k_record_store_info (&pos[0], insn) | |
6416 | || !fix_24k_record_store_info (&pos[1], &hist[0]) | |
6417 | || !fix_24k_record_store_info (&pos[2], &hist[1])) | |
6418 | return 1; | |
6419 | ||
6420 | qsort (&pos, 3, sizeof (struct fix_24k_store_info), fix_24k_sort); | |
6421 | ||
6422 | /* Pick a value of ALIGN and X such that all offsets are adjusted by | |
6423 | X bytes and such that the base register + X is known to be aligned | |
6424 | to align bytes. */ | |
6425 | ||
6426 | if (((insn->insn_opcode >> OP_SH_RS) & OP_MASK_RS) == SP) | |
6427 | align = 8; | |
6428 | else | |
6429 | { | |
6430 | align = pos[0].align_to; | |
6431 | base_offset = pos[0].off; | |
6432 | for (i = 1; i < 3; i++) | |
6433 | if (align < pos[i].align_to) | |
6434 | { | |
6435 | align = pos[i].align_to; | |
6436 | base_offset = pos[i].off; | |
6437 | } | |
6438 | for (i = 0; i < 3; i++) | |
6439 | pos[i].off -= base_offset; | |
6440 | } | |
6441 | ||
6442 | pos[0].off &= ~align + 1; | |
6443 | pos[1].off &= ~align + 1; | |
6444 | pos[2].off &= ~align + 1; | |
6445 | ||
6446 | /* If any two stores write to the same chunk, they also write to the | |
6447 | same doubleword. The offsets are still sorted at this point. */ | |
6448 | if (pos[0].off == pos[1].off || pos[1].off == pos[2].off) | |
6449 | return 0; | |
6450 | ||
6451 | /* A range of at least 9 bytes is needed for the stores to be in | |
6452 | non-overlapping doublewords. */ | |
6453 | if (pos[2].off - pos[0].off <= 8) | |
6454 | return 0; | |
6455 | ||
6456 | if (pos[2].off - pos[1].off >= 24 | |
6457 | || pos[1].off - pos[0].off >= 24 | |
6458 | || pos[2].off - pos[0].off >= 32) | |
6459 | return 0; | |
6460 | ||
6461 | return 1; | |
6462 | } | |
6463 | ||
71400594 | 6464 | /* Return the number of nops that would be needed if instruction INSN |
91d6fa6a | 6465 | immediately followed the MAX_NOPS instructions given by HIST, |
932d1a1b RS |
6466 | where HIST[0] is the most recent instruction. Ignore hazards |
6467 | between INSN and the first IGNORE instructions in HIST. | |
6468 | ||
6469 | If INSN is null, return the worse-case number of nops for any | |
6470 | instruction. */ | |
bdaaa2e1 | 6471 | |
71400594 | 6472 | static int |
932d1a1b | 6473 | nops_for_insn (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
6474 | const struct mips_cl_insn *insn) |
6475 | { | |
6476 | int i, nops, tmp_nops; | |
bdaaa2e1 | 6477 | |
71400594 | 6478 | nops = 0; |
932d1a1b | 6479 | for (i = ignore; i < MAX_DELAY_NOPS; i++) |
65b02341 | 6480 | { |
91d6fa6a | 6481 | tmp_nops = insns_between (hist + i, insn) - i; |
65b02341 RS |
6482 | if (tmp_nops > nops) |
6483 | nops = tmp_nops; | |
6484 | } | |
7d8e00cf | 6485 | |
df58fc94 | 6486 | if (mips_fix_vr4130 && !mips_opts.micromips) |
7d8e00cf | 6487 | { |
932d1a1b | 6488 | tmp_nops = nops_for_vr4130 (ignore, hist, insn); |
7d8e00cf RS |
6489 | if (tmp_nops > nops) |
6490 | nops = tmp_nops; | |
6491 | } | |
6492 | ||
df58fc94 | 6493 | if (mips_fix_24k && !mips_opts.micromips) |
15be625d | 6494 | { |
932d1a1b | 6495 | tmp_nops = nops_for_24k (ignore, hist, insn); |
15be625d CM |
6496 | if (tmp_nops > nops) |
6497 | nops = tmp_nops; | |
6498 | } | |
6499 | ||
71400594 RS |
6500 | return nops; |
6501 | } | |
252b5132 | 6502 | |
71400594 | 6503 | /* The variable arguments provide NUM_INSNS extra instructions that |
91d6fa6a | 6504 | might be added to HIST. Return the largest number of nops that |
932d1a1b RS |
6505 | would be needed after the extended sequence, ignoring hazards |
6506 | in the first IGNORE instructions. */ | |
252b5132 | 6507 | |
71400594 | 6508 | static int |
932d1a1b RS |
6509 | nops_for_sequence (int num_insns, int ignore, |
6510 | const struct mips_cl_insn *hist, ...) | |
71400594 RS |
6511 | { |
6512 | va_list args; | |
6513 | struct mips_cl_insn buffer[MAX_NOPS]; | |
6514 | struct mips_cl_insn *cursor; | |
6515 | int nops; | |
6516 | ||
91d6fa6a | 6517 | va_start (args, hist); |
71400594 | 6518 | cursor = buffer + num_insns; |
91d6fa6a | 6519 | memcpy (cursor, hist, (MAX_NOPS - num_insns) * sizeof (*cursor)); |
71400594 RS |
6520 | while (cursor > buffer) |
6521 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
6522 | ||
932d1a1b | 6523 | nops = nops_for_insn (ignore, buffer, NULL); |
71400594 RS |
6524 | va_end (args); |
6525 | return nops; | |
6526 | } | |
252b5132 | 6527 | |
71400594 RS |
6528 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
6529 | worst-case delay for the branch target. */ | |
252b5132 | 6530 | |
71400594 | 6531 | static int |
932d1a1b | 6532 | nops_for_insn_or_target (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
6533 | const struct mips_cl_insn *insn) |
6534 | { | |
6535 | int nops, tmp_nops; | |
60b63b72 | 6536 | |
932d1a1b | 6537 | nops = nops_for_insn (ignore, hist, insn); |
11625dd8 | 6538 | if (delayed_branch_p (insn)) |
71400594 | 6539 | { |
932d1a1b | 6540 | tmp_nops = nops_for_sequence (2, ignore ? ignore + 2 : 0, |
14fe068b | 6541 | hist, insn, get_delay_slot_nop (insn)); |
71400594 RS |
6542 | if (tmp_nops > nops) |
6543 | nops = tmp_nops; | |
6544 | } | |
11625dd8 | 6545 | else if (compact_branch_p (insn)) |
71400594 | 6546 | { |
932d1a1b | 6547 | tmp_nops = nops_for_sequence (1, ignore ? ignore + 1 : 0, hist, insn); |
71400594 RS |
6548 | if (tmp_nops > nops) |
6549 | nops = tmp_nops; | |
6550 | } | |
6551 | return nops; | |
6552 | } | |
6553 | ||
c67a084a NC |
6554 | /* Fix NOP issue: Replace nops by "or at,at,zero". */ |
6555 | ||
6556 | static void | |
6557 | fix_loongson2f_nop (struct mips_cl_insn * ip) | |
6558 | { | |
df58fc94 | 6559 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
6560 | if (strcmp (ip->insn_mo->name, "nop") == 0) |
6561 | ip->insn_opcode = LOONGSON2F_NOP_INSN; | |
6562 | } | |
6563 | ||
6564 | /* Fix Jump Issue: Eliminate instruction fetch from outside 256M region | |
6565 | jr target pc &= 'hffff_ffff_cfff_ffff. */ | |
6566 | ||
6567 | static void | |
6568 | fix_loongson2f_jump (struct mips_cl_insn * ip) | |
6569 | { | |
df58fc94 | 6570 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
6571 | if (strcmp (ip->insn_mo->name, "j") == 0 |
6572 | || strcmp (ip->insn_mo->name, "jr") == 0 | |
6573 | || strcmp (ip->insn_mo->name, "jalr") == 0) | |
6574 | { | |
6575 | int sreg; | |
6576 | expressionS ep; | |
6577 | ||
6578 | if (! mips_opts.at) | |
6579 | return; | |
6580 | ||
df58fc94 | 6581 | sreg = EXTRACT_OPERAND (0, RS, *ip); |
c67a084a NC |
6582 | if (sreg == ZERO || sreg == KT0 || sreg == KT1 || sreg == ATREG) |
6583 | return; | |
6584 | ||
6585 | ep.X_op = O_constant; | |
6586 | ep.X_add_number = 0xcfff0000; | |
6587 | macro_build (&ep, "lui", "t,u", ATREG, BFD_RELOC_HI16); | |
6588 | ep.X_add_number = 0xffff; | |
6589 | macro_build (&ep, "ori", "t,r,i", ATREG, ATREG, BFD_RELOC_LO16); | |
6590 | macro_build (NULL, "and", "d,v,t", sreg, sreg, ATREG); | |
6591 | } | |
6592 | } | |
6593 | ||
6594 | static void | |
6595 | fix_loongson2f (struct mips_cl_insn * ip) | |
6596 | { | |
6597 | if (mips_fix_loongson2f_nop) | |
6598 | fix_loongson2f_nop (ip); | |
6599 | ||
6600 | if (mips_fix_loongson2f_jump) | |
6601 | fix_loongson2f_jump (ip); | |
6602 | } | |
6603 | ||
a4e06468 RS |
6604 | /* IP is a branch that has a delay slot, and we need to fill it |
6605 | automatically. Return true if we can do that by swapping IP | |
e407c74b NC |
6606 | with the previous instruction. |
6607 | ADDRESS_EXPR is an operand of the instruction to be used with | |
6608 | RELOC_TYPE. */ | |
a4e06468 RS |
6609 | |
6610 | static bfd_boolean | |
e407c74b | 6611 | can_swap_branch_p (struct mips_cl_insn *ip, expressionS *address_expr, |
26545944 | 6612 | bfd_reloc_code_real_type *reloc_type) |
a4e06468 | 6613 | { |
2b0c8b40 | 6614 | unsigned long pinfo, pinfo2, prev_pinfo, prev_pinfo2; |
a4e06468 | 6615 | unsigned int gpr_read, gpr_write, prev_gpr_read, prev_gpr_write; |
9d5de888 | 6616 | unsigned int fpr_read, prev_fpr_write; |
a4e06468 RS |
6617 | |
6618 | /* -O2 and above is required for this optimization. */ | |
6619 | if (mips_optimize < 2) | |
6620 | return FALSE; | |
6621 | ||
6622 | /* If we have seen .set volatile or .set nomove, don't optimize. */ | |
6623 | if (mips_opts.nomove) | |
6624 | return FALSE; | |
6625 | ||
6626 | /* We can't swap if the previous instruction's position is fixed. */ | |
6627 | if (history[0].fixed_p) | |
6628 | return FALSE; | |
6629 | ||
6630 | /* If the previous previous insn was in a .set noreorder, we can't | |
6631 | swap. Actually, the MIPS assembler will swap in this situation. | |
6632 | However, gcc configured -with-gnu-as will generate code like | |
6633 | ||
6634 | .set noreorder | |
6635 | lw $4,XXX | |
6636 | .set reorder | |
6637 | INSN | |
6638 | bne $4,$0,foo | |
6639 | ||
6640 | in which we can not swap the bne and INSN. If gcc is not configured | |
6641 | -with-gnu-as, it does not output the .set pseudo-ops. */ | |
6642 | if (history[1].noreorder_p) | |
6643 | return FALSE; | |
6644 | ||
87333bb7 MR |
6645 | /* If the previous instruction had a fixup in mips16 mode, we can not swap. |
6646 | This means that the previous instruction was a 4-byte one anyhow. */ | |
a4e06468 RS |
6647 | if (mips_opts.mips16 && history[0].fixp[0]) |
6648 | return FALSE; | |
6649 | ||
6650 | /* If the branch is itself the target of a branch, we can not swap. | |
6651 | We cheat on this; all we check for is whether there is a label on | |
6652 | this instruction. If there are any branches to anything other than | |
6653 | a label, users must use .set noreorder. */ | |
6654 | if (seg_info (now_seg)->label_list) | |
6655 | return FALSE; | |
6656 | ||
6657 | /* If the previous instruction is in a variant frag other than this | |
2309ddf2 | 6658 | branch's one, we cannot do the swap. This does not apply to |
9301f9c3 MR |
6659 | MIPS16 code, which uses variant frags for different purposes. */ |
6660 | if (!mips_opts.mips16 | |
a4e06468 RS |
6661 | && history[0].frag |
6662 | && history[0].frag->fr_type == rs_machine_dependent) | |
6663 | return FALSE; | |
6664 | ||
bcd530a7 RS |
6665 | /* We do not swap with instructions that cannot architecturally |
6666 | be placed in a branch delay slot, such as SYNC or ERET. We | |
6667 | also refrain from swapping with a trap instruction, since it | |
6668 | complicates trap handlers to have the trap instruction be in | |
6669 | a delay slot. */ | |
a4e06468 | 6670 | prev_pinfo = history[0].insn_mo->pinfo; |
bcd530a7 | 6671 | if (prev_pinfo & INSN_NO_DELAY_SLOT) |
a4e06468 RS |
6672 | return FALSE; |
6673 | ||
6674 | /* Check for conflicts between the branch and the instructions | |
6675 | before the candidate delay slot. */ | |
6676 | if (nops_for_insn (0, history + 1, ip) > 0) | |
6677 | return FALSE; | |
6678 | ||
6679 | /* Check for conflicts between the swapped sequence and the | |
6680 | target of the branch. */ | |
6681 | if (nops_for_sequence (2, 0, history + 1, ip, history) > 0) | |
6682 | return FALSE; | |
6683 | ||
6684 | /* If the branch reads a register that the previous | |
6685 | instruction sets, we can not swap. */ | |
6686 | gpr_read = gpr_read_mask (ip); | |
6687 | prev_gpr_write = gpr_write_mask (&history[0]); | |
6688 | if (gpr_read & prev_gpr_write) | |
6689 | return FALSE; | |
6690 | ||
9d5de888 CF |
6691 | fpr_read = fpr_read_mask (ip); |
6692 | prev_fpr_write = fpr_write_mask (&history[0]); | |
6693 | if (fpr_read & prev_fpr_write) | |
6694 | return FALSE; | |
6695 | ||
a4e06468 RS |
6696 | /* If the branch writes a register that the previous |
6697 | instruction sets, we can not swap. */ | |
6698 | gpr_write = gpr_write_mask (ip); | |
6699 | if (gpr_write & prev_gpr_write) | |
6700 | return FALSE; | |
6701 | ||
6702 | /* If the branch writes a register that the previous | |
6703 | instruction reads, we can not swap. */ | |
6704 | prev_gpr_read = gpr_read_mask (&history[0]); | |
6705 | if (gpr_write & prev_gpr_read) | |
6706 | return FALSE; | |
6707 | ||
6708 | /* If one instruction sets a condition code and the | |
6709 | other one uses a condition code, we can not swap. */ | |
6710 | pinfo = ip->insn_mo->pinfo; | |
6711 | if ((pinfo & INSN_READ_COND_CODE) | |
6712 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
6713 | return FALSE; | |
6714 | if ((pinfo & INSN_WRITE_COND_CODE) | |
6715 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
6716 | return FALSE; | |
6717 | ||
6718 | /* If the previous instruction uses the PC, we can not swap. */ | |
2b0c8b40 | 6719 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
26545944 | 6720 | if (prev_pinfo2 & INSN2_READ_PC) |
2b0c8b40 | 6721 | return FALSE; |
a4e06468 | 6722 | |
df58fc94 RS |
6723 | /* If the previous instruction has an incorrect size for a fixed |
6724 | branch delay slot in microMIPS mode, we cannot swap. */ | |
2309ddf2 MR |
6725 | pinfo2 = ip->insn_mo->pinfo2; |
6726 | if (mips_opts.micromips | |
6727 | && (pinfo2 & INSN2_BRANCH_DELAY_16BIT) | |
6728 | && insn_length (history) != 2) | |
6729 | return FALSE; | |
6730 | if (mips_opts.micromips | |
6731 | && (pinfo2 & INSN2_BRANCH_DELAY_32BIT) | |
6732 | && insn_length (history) != 4) | |
6733 | return FALSE; | |
6734 | ||
e407c74b NC |
6735 | /* On R5900 short loops need to be fixed by inserting a nop in |
6736 | the branch delay slots. | |
6737 | A short loop can be terminated too early. */ | |
6738 | if (mips_opts.arch == CPU_R5900 | |
6739 | /* Check if instruction has a parameter, ignore "j $31". */ | |
6740 | && (address_expr != NULL) | |
6741 | /* Parameter must be 16 bit. */ | |
6742 | && (*reloc_type == BFD_RELOC_16_PCREL_S2) | |
6743 | /* Branch to same segment. */ | |
41065f5e | 6744 | && (S_GET_SEGMENT (address_expr->X_add_symbol) == now_seg) |
e407c74b | 6745 | /* Branch to same code fragment. */ |
41065f5e | 6746 | && (symbol_get_frag (address_expr->X_add_symbol) == frag_now) |
e407c74b | 6747 | /* Can only calculate branch offset if value is known. */ |
41065f5e | 6748 | && symbol_constant_p (address_expr->X_add_symbol) |
e407c74b NC |
6749 | /* Check if branch is really conditional. */ |
6750 | && !((ip->insn_opcode & 0xffff0000) == 0x10000000 /* beq $0,$0 */ | |
6751 | || (ip->insn_opcode & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
6752 | || (ip->insn_opcode & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
6753 | { | |
6754 | int distance; | |
6755 | /* Check if loop is shorter than 6 instructions including | |
6756 | branch and delay slot. */ | |
41065f5e | 6757 | distance = frag_now_fix () - S_GET_VALUE (address_expr->X_add_symbol); |
e407c74b NC |
6758 | if (distance <= 20) |
6759 | { | |
6760 | int i; | |
6761 | int rv; | |
6762 | ||
6763 | rv = FALSE; | |
6764 | /* When the loop includes branches or jumps, | |
6765 | it is not a short loop. */ | |
6766 | for (i = 0; i < (distance / 4); i++) | |
6767 | { | |
6768 | if ((history[i].cleared_p) | |
41065f5e | 6769 | || delayed_branch_p (&history[i])) |
e407c74b NC |
6770 | { |
6771 | rv = TRUE; | |
6772 | break; | |
6773 | } | |
6774 | } | |
6775 | if (rv == FALSE) | |
6776 | { | |
6777 | /* Insert nop after branch to fix short loop. */ | |
6778 | return FALSE; | |
6779 | } | |
6780 | } | |
6781 | } | |
6782 | ||
a4e06468 RS |
6783 | return TRUE; |
6784 | } | |
6785 | ||
e407c74b NC |
6786 | /* Decide how we should add IP to the instruction stream. |
6787 | ADDRESS_EXPR is an operand of the instruction to be used with | |
6788 | RELOC_TYPE. */ | |
a4e06468 RS |
6789 | |
6790 | static enum append_method | |
e407c74b | 6791 | get_append_method (struct mips_cl_insn *ip, expressionS *address_expr, |
26545944 | 6792 | bfd_reloc_code_real_type *reloc_type) |
a4e06468 | 6793 | { |
a4e06468 RS |
6794 | /* The relaxed version of a macro sequence must be inherently |
6795 | hazard-free. */ | |
6796 | if (mips_relax.sequence == 2) | |
6797 | return APPEND_ADD; | |
6798 | ||
6799 | /* We must not dabble with instructions in a ".set norerorder" block. */ | |
6800 | if (mips_opts.noreorder) | |
6801 | return APPEND_ADD; | |
6802 | ||
6803 | /* Otherwise, it's our responsibility to fill branch delay slots. */ | |
11625dd8 | 6804 | if (delayed_branch_p (ip)) |
a4e06468 | 6805 | { |
e407c74b NC |
6806 | if (!branch_likely_p (ip) |
6807 | && can_swap_branch_p (ip, address_expr, reloc_type)) | |
a4e06468 RS |
6808 | return APPEND_SWAP; |
6809 | ||
6810 | if (mips_opts.mips16 | |
6811 | && ISA_SUPPORTS_MIPS16E | |
fc76e730 | 6812 | && gpr_read_mask (ip) != 0) |
a4e06468 RS |
6813 | return APPEND_ADD_COMPACT; |
6814 | ||
6815 | return APPEND_ADD_WITH_NOP; | |
6816 | } | |
6817 | ||
a4e06468 RS |
6818 | return APPEND_ADD; |
6819 | } | |
6820 | ||
ceb94aa5 RS |
6821 | /* IP is a MIPS16 instruction whose opcode we have just changed. |
6822 | Point IP->insn_mo to the new opcode's definition. */ | |
6823 | ||
6824 | static void | |
6825 | find_altered_mips16_opcode (struct mips_cl_insn *ip) | |
6826 | { | |
6827 | const struct mips_opcode *mo, *end; | |
6828 | ||
6829 | end = &mips16_opcodes[bfd_mips16_num_opcodes]; | |
6830 | for (mo = ip->insn_mo; mo < end; mo++) | |
6831 | if ((ip->insn_opcode & mo->mask) == mo->match) | |
6832 | { | |
6833 | ip->insn_mo = mo; | |
6834 | return; | |
6835 | } | |
6836 | abort (); | |
6837 | } | |
6838 | ||
df58fc94 RS |
6839 | /* For microMIPS macros, we need to generate a local number label |
6840 | as the target of branches. */ | |
6841 | #define MICROMIPS_LABEL_CHAR '\037' | |
6842 | static unsigned long micromips_target_label; | |
6843 | static char micromips_target_name[32]; | |
6844 | ||
6845 | static char * | |
6846 | micromips_label_name (void) | |
6847 | { | |
6848 | char *p = micromips_target_name; | |
6849 | char symbol_name_temporary[24]; | |
6850 | unsigned long l; | |
6851 | int i; | |
6852 | ||
6853 | if (*p) | |
6854 | return p; | |
6855 | ||
6856 | i = 0; | |
6857 | l = micromips_target_label; | |
6858 | #ifdef LOCAL_LABEL_PREFIX | |
6859 | *p++ = LOCAL_LABEL_PREFIX; | |
6860 | #endif | |
6861 | *p++ = 'L'; | |
6862 | *p++ = MICROMIPS_LABEL_CHAR; | |
6863 | do | |
6864 | { | |
6865 | symbol_name_temporary[i++] = l % 10 + '0'; | |
6866 | l /= 10; | |
6867 | } | |
6868 | while (l != 0); | |
6869 | while (i > 0) | |
6870 | *p++ = symbol_name_temporary[--i]; | |
6871 | *p = '\0'; | |
6872 | ||
6873 | return micromips_target_name; | |
6874 | } | |
6875 | ||
6876 | static void | |
6877 | micromips_label_expr (expressionS *label_expr) | |
6878 | { | |
6879 | label_expr->X_op = O_symbol; | |
6880 | label_expr->X_add_symbol = symbol_find_or_make (micromips_label_name ()); | |
6881 | label_expr->X_add_number = 0; | |
6882 | } | |
6883 | ||
6884 | static void | |
6885 | micromips_label_inc (void) | |
6886 | { | |
6887 | micromips_target_label++; | |
6888 | *micromips_target_name = '\0'; | |
6889 | } | |
6890 | ||
6891 | static void | |
6892 | micromips_add_label (void) | |
6893 | { | |
6894 | symbolS *s; | |
6895 | ||
6896 | s = colon (micromips_label_name ()); | |
6897 | micromips_label_inc (); | |
f3ded42a | 6898 | S_SET_OTHER (s, ELF_ST_SET_MICROMIPS (S_GET_OTHER (s))); |
df58fc94 RS |
6899 | } |
6900 | ||
6901 | /* If assembling microMIPS code, then return the microMIPS reloc | |
6902 | corresponding to the requested one if any. Otherwise return | |
6903 | the reloc unchanged. */ | |
6904 | ||
6905 | static bfd_reloc_code_real_type | |
6906 | micromips_map_reloc (bfd_reloc_code_real_type reloc) | |
6907 | { | |
6908 | static const bfd_reloc_code_real_type relocs[][2] = | |
6909 | { | |
6910 | /* Keep sorted incrementally by the left-hand key. */ | |
6911 | { BFD_RELOC_16_PCREL_S2, BFD_RELOC_MICROMIPS_16_PCREL_S1 }, | |
6912 | { BFD_RELOC_GPREL16, BFD_RELOC_MICROMIPS_GPREL16 }, | |
6913 | { BFD_RELOC_MIPS_JMP, BFD_RELOC_MICROMIPS_JMP }, | |
6914 | { BFD_RELOC_HI16, BFD_RELOC_MICROMIPS_HI16 }, | |
6915 | { BFD_RELOC_HI16_S, BFD_RELOC_MICROMIPS_HI16_S }, | |
6916 | { BFD_RELOC_LO16, BFD_RELOC_MICROMIPS_LO16 }, | |
6917 | { BFD_RELOC_MIPS_LITERAL, BFD_RELOC_MICROMIPS_LITERAL }, | |
6918 | { BFD_RELOC_MIPS_GOT16, BFD_RELOC_MICROMIPS_GOT16 }, | |
6919 | { BFD_RELOC_MIPS_CALL16, BFD_RELOC_MICROMIPS_CALL16 }, | |
6920 | { BFD_RELOC_MIPS_GOT_HI16, BFD_RELOC_MICROMIPS_GOT_HI16 }, | |
6921 | { BFD_RELOC_MIPS_GOT_LO16, BFD_RELOC_MICROMIPS_GOT_LO16 }, | |
6922 | { BFD_RELOC_MIPS_CALL_HI16, BFD_RELOC_MICROMIPS_CALL_HI16 }, | |
6923 | { BFD_RELOC_MIPS_CALL_LO16, BFD_RELOC_MICROMIPS_CALL_LO16 }, | |
6924 | { BFD_RELOC_MIPS_SUB, BFD_RELOC_MICROMIPS_SUB }, | |
6925 | { BFD_RELOC_MIPS_GOT_PAGE, BFD_RELOC_MICROMIPS_GOT_PAGE }, | |
6926 | { BFD_RELOC_MIPS_GOT_OFST, BFD_RELOC_MICROMIPS_GOT_OFST }, | |
6927 | { BFD_RELOC_MIPS_GOT_DISP, BFD_RELOC_MICROMIPS_GOT_DISP }, | |
6928 | { BFD_RELOC_MIPS_HIGHEST, BFD_RELOC_MICROMIPS_HIGHEST }, | |
6929 | { BFD_RELOC_MIPS_HIGHER, BFD_RELOC_MICROMIPS_HIGHER }, | |
6930 | { BFD_RELOC_MIPS_SCN_DISP, BFD_RELOC_MICROMIPS_SCN_DISP }, | |
6931 | { BFD_RELOC_MIPS_TLS_GD, BFD_RELOC_MICROMIPS_TLS_GD }, | |
6932 | { BFD_RELOC_MIPS_TLS_LDM, BFD_RELOC_MICROMIPS_TLS_LDM }, | |
6933 | { BFD_RELOC_MIPS_TLS_DTPREL_HI16, BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16 }, | |
6934 | { BFD_RELOC_MIPS_TLS_DTPREL_LO16, BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16 }, | |
6935 | { BFD_RELOC_MIPS_TLS_GOTTPREL, BFD_RELOC_MICROMIPS_TLS_GOTTPREL }, | |
6936 | { BFD_RELOC_MIPS_TLS_TPREL_HI16, BFD_RELOC_MICROMIPS_TLS_TPREL_HI16 }, | |
6937 | { BFD_RELOC_MIPS_TLS_TPREL_LO16, BFD_RELOC_MICROMIPS_TLS_TPREL_LO16 } | |
6938 | }; | |
6939 | bfd_reloc_code_real_type r; | |
6940 | size_t i; | |
6941 | ||
6942 | if (!mips_opts.micromips) | |
6943 | return reloc; | |
6944 | for (i = 0; i < ARRAY_SIZE (relocs); i++) | |
6945 | { | |
6946 | r = relocs[i][0]; | |
6947 | if (r > reloc) | |
6948 | return reloc; | |
6949 | if (r == reloc) | |
6950 | return relocs[i][1]; | |
6951 | } | |
6952 | return reloc; | |
6953 | } | |
6954 | ||
b886a2ab RS |
6955 | /* Try to resolve relocation RELOC against constant OPERAND at assembly time. |
6956 | Return true on success, storing the resolved value in RESULT. */ | |
6957 | ||
6958 | static bfd_boolean | |
6959 | calculate_reloc (bfd_reloc_code_real_type reloc, offsetT operand, | |
6960 | offsetT *result) | |
6961 | { | |
6962 | switch (reloc) | |
6963 | { | |
6964 | case BFD_RELOC_MIPS_HIGHEST: | |
6965 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
6966 | *result = ((operand + 0x800080008000ull) >> 48) & 0xffff; | |
6967 | return TRUE; | |
6968 | ||
6969 | case BFD_RELOC_MIPS_HIGHER: | |
6970 | case BFD_RELOC_MICROMIPS_HIGHER: | |
6971 | *result = ((operand + 0x80008000ull) >> 32) & 0xffff; | |
6972 | return TRUE; | |
6973 | ||
6974 | case BFD_RELOC_HI16_S: | |
6975 | case BFD_RELOC_MICROMIPS_HI16_S: | |
6976 | case BFD_RELOC_MIPS16_HI16_S: | |
6977 | *result = ((operand + 0x8000) >> 16) & 0xffff; | |
6978 | return TRUE; | |
6979 | ||
6980 | case BFD_RELOC_HI16: | |
6981 | case BFD_RELOC_MICROMIPS_HI16: | |
6982 | case BFD_RELOC_MIPS16_HI16: | |
6983 | *result = (operand >> 16) & 0xffff; | |
6984 | return TRUE; | |
6985 | ||
6986 | case BFD_RELOC_LO16: | |
6987 | case BFD_RELOC_MICROMIPS_LO16: | |
6988 | case BFD_RELOC_MIPS16_LO16: | |
6989 | *result = operand & 0xffff; | |
6990 | return TRUE; | |
6991 | ||
6992 | case BFD_RELOC_UNUSED: | |
6993 | *result = operand; | |
6994 | return TRUE; | |
6995 | ||
6996 | default: | |
6997 | return FALSE; | |
6998 | } | |
6999 | } | |
7000 | ||
71400594 RS |
7001 | /* Output an instruction. IP is the instruction information. |
7002 | ADDRESS_EXPR is an operand of the instruction to be used with | |
df58fc94 RS |
7003 | RELOC_TYPE. EXPANSIONP is true if the instruction is part of |
7004 | a macro expansion. */ | |
71400594 RS |
7005 | |
7006 | static void | |
7007 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
df58fc94 | 7008 | bfd_reloc_code_real_type *reloc_type, bfd_boolean expansionp) |
71400594 | 7009 | { |
14fe068b | 7010 | unsigned long prev_pinfo2, pinfo; |
71400594 | 7011 | bfd_boolean relaxed_branch = FALSE; |
a4e06468 | 7012 | enum append_method method; |
2309ddf2 | 7013 | bfd_boolean relax32; |
2b0c8b40 | 7014 | int branch_disp; |
71400594 | 7015 | |
2309ddf2 | 7016 | if (mips_fix_loongson2f && !HAVE_CODE_COMPRESSION) |
c67a084a NC |
7017 | fix_loongson2f (ip); |
7018 | ||
738f4d98 | 7019 | file_ase_mips16 |= mips_opts.mips16; |
df58fc94 | 7020 | file_ase_micromips |= mips_opts.micromips; |
738f4d98 | 7021 | |
df58fc94 | 7022 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
71400594 | 7023 | pinfo = ip->insn_mo->pinfo; |
df58fc94 RS |
7024 | |
7025 | if (mips_opts.micromips | |
7026 | && !expansionp | |
7027 | && (((prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
7028 | && micromips_insn_length (ip->insn_mo) != 2) | |
7029 | || ((prev_pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 | |
7030 | && micromips_insn_length (ip->insn_mo) != 4))) | |
1661c76c | 7031 | as_warn (_("wrong size instruction in a %u-bit branch delay slot"), |
df58fc94 | 7032 | (prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 ? 16 : 32); |
71400594 | 7033 | |
15be625d CM |
7034 | if (address_expr == NULL) |
7035 | ip->complete_p = 1; | |
b886a2ab RS |
7036 | else if (reloc_type[0] <= BFD_RELOC_UNUSED |
7037 | && reloc_type[1] == BFD_RELOC_UNUSED | |
7038 | && reloc_type[2] == BFD_RELOC_UNUSED | |
15be625d CM |
7039 | && address_expr->X_op == O_constant) |
7040 | { | |
15be625d CM |
7041 | switch (*reloc_type) |
7042 | { | |
15be625d | 7043 | case BFD_RELOC_MIPS_JMP: |
df58fc94 RS |
7044 | { |
7045 | int shift; | |
7046 | ||
7047 | shift = mips_opts.micromips ? 1 : 2; | |
7048 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
7049 | as_bad (_("jump to misaligned address (0x%lx)"), | |
7050 | (unsigned long) address_expr->X_add_number); | |
7051 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
7052 | & 0x3ffffff); | |
335574df | 7053 | ip->complete_p = 1; |
df58fc94 | 7054 | } |
15be625d CM |
7055 | break; |
7056 | ||
7057 | case BFD_RELOC_MIPS16_JMP: | |
7058 | if ((address_expr->X_add_number & 3) != 0) | |
7059 | as_bad (_("jump to misaligned address (0x%lx)"), | |
7060 | (unsigned long) address_expr->X_add_number); | |
7061 | ip->insn_opcode |= | |
7062 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
7063 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
7064 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
335574df | 7065 | ip->complete_p = 1; |
15be625d CM |
7066 | break; |
7067 | ||
7068 | case BFD_RELOC_16_PCREL_S2: | |
df58fc94 RS |
7069 | { |
7070 | int shift; | |
7071 | ||
7072 | shift = mips_opts.micromips ? 1 : 2; | |
7073 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
7074 | as_bad (_("branch to misaligned address (0x%lx)"), | |
7075 | (unsigned long) address_expr->X_add_number); | |
7076 | if (!mips_relax_branch) | |
7077 | { | |
7078 | if ((address_expr->X_add_number + (1 << (shift + 15))) | |
7079 | & ~((1 << (shift + 16)) - 1)) | |
7080 | as_bad (_("branch address range overflow (0x%lx)"), | |
7081 | (unsigned long) address_expr->X_add_number); | |
7082 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
7083 | & 0xffff); | |
7084 | } | |
df58fc94 | 7085 | } |
15be625d CM |
7086 | break; |
7087 | ||
7361da2c AB |
7088 | case BFD_RELOC_MIPS_21_PCREL_S2: |
7089 | { | |
7090 | int shift; | |
7091 | ||
7092 | shift = 2; | |
7093 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
7094 | as_bad (_("branch to misaligned address (0x%lx)"), | |
7095 | (unsigned long) address_expr->X_add_number); | |
7096 | if ((address_expr->X_add_number + (1 << (shift + 20))) | |
7097 | & ~((1 << (shift + 21)) - 1)) | |
7098 | as_bad (_("branch address range overflow (0x%lx)"), | |
7099 | (unsigned long) address_expr->X_add_number); | |
7100 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
7101 | & 0x1fffff); | |
7102 | } | |
7103 | break; | |
7104 | ||
7105 | case BFD_RELOC_MIPS_26_PCREL_S2: | |
7106 | { | |
7107 | int shift; | |
7108 | ||
7109 | shift = 2; | |
7110 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
7111 | as_bad (_("branch to misaligned address (0x%lx)"), | |
7112 | (unsigned long) address_expr->X_add_number); | |
7113 | if ((address_expr->X_add_number + (1 << (shift + 25))) | |
7114 | & ~((1 << (shift + 26)) - 1)) | |
7115 | as_bad (_("branch address range overflow (0x%lx)"), | |
7116 | (unsigned long) address_expr->X_add_number); | |
7117 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
7118 | & 0x3ffffff); | |
7119 | } | |
7120 | break; | |
7121 | ||
15be625d | 7122 | default: |
b886a2ab RS |
7123 | { |
7124 | offsetT value; | |
7125 | ||
7126 | if (calculate_reloc (*reloc_type, address_expr->X_add_number, | |
7127 | &value)) | |
7128 | { | |
7129 | ip->insn_opcode |= value & 0xffff; | |
7130 | ip->complete_p = 1; | |
7131 | } | |
7132 | } | |
7133 | break; | |
7134 | } | |
15be625d CM |
7135 | } |
7136 | ||
71400594 RS |
7137 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
7138 | { | |
7139 | /* There are a lot of optimizations we could do that we don't. | |
7140 | In particular, we do not, in general, reorder instructions. | |
7141 | If you use gcc with optimization, it will reorder | |
7142 | instructions and generally do much more optimization then we | |
7143 | do here; repeating all that work in the assembler would only | |
7144 | benefit hand written assembly code, and does not seem worth | |
7145 | it. */ | |
7146 | int nops = (mips_optimize == 0 | |
932d1a1b RS |
7147 | ? nops_for_insn (0, history, NULL) |
7148 | : nops_for_insn_or_target (0, history, ip)); | |
71400594 | 7149 | if (nops > 0) |
252b5132 RH |
7150 | { |
7151 | fragS *old_frag; | |
7152 | unsigned long old_frag_offset; | |
7153 | int i; | |
252b5132 RH |
7154 | |
7155 | old_frag = frag_now; | |
7156 | old_frag_offset = frag_now_fix (); | |
7157 | ||
7158 | for (i = 0; i < nops; i++) | |
14fe068b RS |
7159 | add_fixed_insn (NOP_INSN); |
7160 | insert_into_history (0, nops, NOP_INSN); | |
252b5132 RH |
7161 | |
7162 | if (listing) | |
7163 | { | |
7164 | listing_prev_line (); | |
7165 | /* We may be at the start of a variant frag. In case we | |
7166 | are, make sure there is enough space for the frag | |
7167 | after the frags created by listing_prev_line. The | |
7168 | argument to frag_grow here must be at least as large | |
7169 | as the argument to all other calls to frag_grow in | |
7170 | this file. We don't have to worry about being in the | |
7171 | middle of a variant frag, because the variants insert | |
7172 | all needed nop instructions themselves. */ | |
7173 | frag_grow (40); | |
7174 | } | |
7175 | ||
462427c4 | 7176 | mips_move_text_labels (); |
252b5132 RH |
7177 | |
7178 | #ifndef NO_ECOFF_DEBUGGING | |
7179 | if (ECOFF_DEBUGGING) | |
7180 | ecoff_fix_loc (old_frag, old_frag_offset); | |
7181 | #endif | |
7182 | } | |
71400594 RS |
7183 | } |
7184 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
7185 | { | |
932d1a1b RS |
7186 | int nops; |
7187 | ||
7188 | /* Work out how many nops in prev_nop_frag are needed by IP, | |
7189 | ignoring hazards generated by the first prev_nop_frag_since | |
7190 | instructions. */ | |
7191 | nops = nops_for_insn_or_target (prev_nop_frag_since, history, ip); | |
9c2799c2 | 7192 | gas_assert (nops <= prev_nop_frag_holds); |
252b5132 | 7193 | |
71400594 RS |
7194 | /* Enforce NOPS as a minimum. */ |
7195 | if (nops > prev_nop_frag_required) | |
7196 | prev_nop_frag_required = nops; | |
252b5132 | 7197 | |
71400594 RS |
7198 | if (prev_nop_frag_holds == prev_nop_frag_required) |
7199 | { | |
7200 | /* Settle for the current number of nops. Update the history | |
7201 | accordingly (for the benefit of any future .set reorder code). */ | |
7202 | prev_nop_frag = NULL; | |
7203 | insert_into_history (prev_nop_frag_since, | |
7204 | prev_nop_frag_holds, NOP_INSN); | |
7205 | } | |
7206 | else | |
7207 | { | |
7208 | /* Allow this instruction to replace one of the nops that was | |
7209 | tentatively added to prev_nop_frag. */ | |
df58fc94 | 7210 | prev_nop_frag->fr_fix -= NOP_INSN_SIZE; |
71400594 RS |
7211 | prev_nop_frag_holds--; |
7212 | prev_nop_frag_since++; | |
252b5132 RH |
7213 | } |
7214 | } | |
7215 | ||
e407c74b | 7216 | method = get_append_method (ip, address_expr, reloc_type); |
2b0c8b40 | 7217 | branch_disp = method == APPEND_SWAP ? insn_length (history) : 0; |
a4e06468 | 7218 | |
e410add4 RS |
7219 | dwarf2_emit_insn (0); |
7220 | /* We want MIPS16 and microMIPS debug info to use ISA-encoded addresses, | |
7221 | so "move" the instruction address accordingly. | |
7222 | ||
7223 | Also, it doesn't seem appropriate for the assembler to reorder .loc | |
7224 | entries. If this instruction is a branch that we are going to swap | |
7225 | with the previous instruction, the two instructions should be | |
7226 | treated as a unit, and the debug information for both instructions | |
7227 | should refer to the start of the branch sequence. Using the | |
7228 | current position is certainly wrong when swapping a 32-bit branch | |
7229 | and a 16-bit delay slot, since the current position would then be | |
7230 | in the middle of a branch. */ | |
7231 | dwarf2_move_insn ((HAVE_CODE_COMPRESSION ? 1 : 0) - branch_disp); | |
58e2ea4d | 7232 | |
df58fc94 RS |
7233 | relax32 = (mips_relax_branch |
7234 | /* Don't try branch relaxation within .set nomacro, or within | |
7235 | .set noat if we use $at for PIC computations. If it turns | |
7236 | out that the branch was out-of-range, we'll get an error. */ | |
7237 | && !mips_opts.warn_about_macros | |
7238 | && (mips_opts.at || mips_pic == NO_PIC) | |
3bf0dbfb MR |
7239 | /* Don't relax BPOSGE32/64 or BC1ANY2T/F and BC1ANY4T/F |
7240 | as they have no complementing branches. */ | |
7241 | && !(ip->insn_mo->ase & (ASE_MIPS3D | ASE_DSP64 | ASE_DSP))); | |
df58fc94 RS |
7242 | |
7243 | if (!HAVE_CODE_COMPRESSION | |
7244 | && address_expr | |
7245 | && relax32 | |
0b25d3e6 | 7246 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
11625dd8 | 7247 | && delayed_branch_p (ip)) |
4a6a3df4 | 7248 | { |
895921c9 | 7249 | relaxed_branch = TRUE; |
1e915849 RS |
7250 | add_relaxed_insn (ip, (relaxed_branch_length |
7251 | (NULL, NULL, | |
11625dd8 RS |
7252 | uncond_branch_p (ip) ? -1 |
7253 | : branch_likely_p (ip) ? 1 | |
1e915849 RS |
7254 | : 0)), 4, |
7255 | RELAX_BRANCH_ENCODE | |
66b3e8da | 7256 | (AT, |
11625dd8 RS |
7257 | uncond_branch_p (ip), |
7258 | branch_likely_p (ip), | |
1e915849 RS |
7259 | pinfo & INSN_WRITE_GPR_31, |
7260 | 0), | |
7261 | address_expr->X_add_symbol, | |
7262 | address_expr->X_add_number); | |
4a6a3df4 AO |
7263 | *reloc_type = BFD_RELOC_UNUSED; |
7264 | } | |
df58fc94 RS |
7265 | else if (mips_opts.micromips |
7266 | && address_expr | |
7267 | && ((relax32 && *reloc_type == BFD_RELOC_16_PCREL_S2) | |
7268 | || *reloc_type > BFD_RELOC_UNUSED) | |
40209cad MR |
7269 | && (delayed_branch_p (ip) || compact_branch_p (ip)) |
7270 | /* Don't try branch relaxation when users specify | |
7271 | 16-bit/32-bit instructions. */ | |
7272 | && !forced_insn_length) | |
df58fc94 RS |
7273 | { |
7274 | bfd_boolean relax16 = *reloc_type > BFD_RELOC_UNUSED; | |
7275 | int type = relax16 ? *reloc_type - BFD_RELOC_UNUSED : 0; | |
11625dd8 RS |
7276 | int uncond = uncond_branch_p (ip) ? -1 : 0; |
7277 | int compact = compact_branch_p (ip); | |
df58fc94 RS |
7278 | int al = pinfo & INSN_WRITE_GPR_31; |
7279 | int length32; | |
7280 | ||
7281 | gas_assert (address_expr != NULL); | |
7282 | gas_assert (!mips_relax.sequence); | |
7283 | ||
2b0c8b40 | 7284 | relaxed_branch = TRUE; |
df58fc94 RS |
7285 | length32 = relaxed_micromips_32bit_branch_length (NULL, NULL, uncond); |
7286 | add_relaxed_insn (ip, relax32 ? length32 : 4, relax16 ? 2 : 4, | |
40209cad MR |
7287 | RELAX_MICROMIPS_ENCODE (type, AT, uncond, compact, al, |
7288 | relax32, 0, 0), | |
df58fc94 RS |
7289 | address_expr->X_add_symbol, |
7290 | address_expr->X_add_number); | |
7291 | *reloc_type = BFD_RELOC_UNUSED; | |
7292 | } | |
7293 | else if (mips_opts.mips16 && *reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
7294 | { |
7295 | /* We need to set up a variant frag. */ | |
df58fc94 | 7296 | gas_assert (address_expr != NULL); |
1e915849 RS |
7297 | add_relaxed_insn (ip, 4, 0, |
7298 | RELAX_MIPS16_ENCODE | |
7299 | (*reloc_type - BFD_RELOC_UNUSED, | |
df58fc94 | 7300 | forced_insn_length == 2, forced_insn_length == 4, |
11625dd8 | 7301 | delayed_branch_p (&history[0]), |
1e915849 RS |
7302 | history[0].mips16_absolute_jump_p), |
7303 | make_expr_symbol (address_expr), 0); | |
252b5132 | 7304 | } |
5c04167a | 7305 | else if (mips_opts.mips16 && insn_length (ip) == 2) |
9497f5ac | 7306 | { |
11625dd8 | 7307 | if (!delayed_branch_p (ip)) |
b8ee1a6e DU |
7308 | /* Make sure there is enough room to swap this instruction with |
7309 | a following jump instruction. */ | |
7310 | frag_grow (6); | |
1e915849 | 7311 | add_fixed_insn (ip); |
252b5132 RH |
7312 | } |
7313 | else | |
7314 | { | |
7315 | if (mips_opts.mips16 | |
7316 | && mips_opts.noreorder | |
11625dd8 | 7317 | && delayed_branch_p (&history[0])) |
252b5132 RH |
7318 | as_warn (_("extended instruction in delay slot")); |
7319 | ||
4d7206a2 RS |
7320 | if (mips_relax.sequence) |
7321 | { | |
7322 | /* If we've reached the end of this frag, turn it into a variant | |
7323 | frag and record the information for the instructions we've | |
7324 | written so far. */ | |
7325 | if (frag_room () < 4) | |
7326 | relax_close_frag (); | |
df58fc94 | 7327 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (ip); |
4d7206a2 RS |
7328 | } |
7329 | ||
584892a6 | 7330 | if (mips_relax.sequence != 2) |
df58fc94 RS |
7331 | { |
7332 | if (mips_macro_warning.first_insn_sizes[0] == 0) | |
7333 | mips_macro_warning.first_insn_sizes[0] = insn_length (ip); | |
7334 | mips_macro_warning.sizes[0] += insn_length (ip); | |
7335 | mips_macro_warning.insns[0]++; | |
7336 | } | |
584892a6 | 7337 | if (mips_relax.sequence != 1) |
df58fc94 RS |
7338 | { |
7339 | if (mips_macro_warning.first_insn_sizes[1] == 0) | |
7340 | mips_macro_warning.first_insn_sizes[1] = insn_length (ip); | |
7341 | mips_macro_warning.sizes[1] += insn_length (ip); | |
7342 | mips_macro_warning.insns[1]++; | |
7343 | } | |
584892a6 | 7344 | |
1e915849 RS |
7345 | if (mips_opts.mips16) |
7346 | { | |
7347 | ip->fixed_p = 1; | |
7348 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
7349 | } | |
7350 | add_fixed_insn (ip); | |
252b5132 RH |
7351 | } |
7352 | ||
9fe77896 | 7353 | if (!ip->complete_p && *reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 7354 | { |
df58fc94 | 7355 | bfd_reloc_code_real_type final_type[3]; |
2309ddf2 | 7356 | reloc_howto_type *howto0; |
9fe77896 RS |
7357 | reloc_howto_type *howto; |
7358 | int i; | |
34ce925e | 7359 | |
df58fc94 RS |
7360 | /* Perform any necessary conversion to microMIPS relocations |
7361 | and find out how many relocations there actually are. */ | |
7362 | for (i = 0; i < 3 && reloc_type[i] != BFD_RELOC_UNUSED; i++) | |
7363 | final_type[i] = micromips_map_reloc (reloc_type[i]); | |
7364 | ||
9fe77896 RS |
7365 | /* In a compound relocation, it is the final (outermost) |
7366 | operator that determines the relocated field. */ | |
2309ddf2 | 7367 | howto = howto0 = bfd_reloc_type_lookup (stdoutput, final_type[i - 1]); |
e8044f35 RS |
7368 | if (!howto) |
7369 | abort (); | |
2309ddf2 MR |
7370 | |
7371 | if (i > 1) | |
7372 | howto0 = bfd_reloc_type_lookup (stdoutput, final_type[0]); | |
9fe77896 RS |
7373 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
7374 | bfd_get_reloc_size (howto), | |
7375 | address_expr, | |
2309ddf2 MR |
7376 | howto0 && howto0->pc_relative, |
7377 | final_type[0]); | |
9fe77896 RS |
7378 | |
7379 | /* Tag symbols that have a R_MIPS16_26 relocation against them. */ | |
2309ddf2 | 7380 | if (final_type[0] == BFD_RELOC_MIPS16_JMP && ip->fixp[0]->fx_addsy) |
9fe77896 RS |
7381 | *symbol_get_tc (ip->fixp[0]->fx_addsy) = 1; |
7382 | ||
7383 | /* These relocations can have an addend that won't fit in | |
7384 | 4 octets for 64bit assembly. */ | |
bad1aba3 | 7385 | if (GPR_SIZE == 64 |
9fe77896 RS |
7386 | && ! howto->partial_inplace |
7387 | && (reloc_type[0] == BFD_RELOC_16 | |
7388 | || reloc_type[0] == BFD_RELOC_32 | |
7389 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
7390 | || reloc_type[0] == BFD_RELOC_GPREL16 | |
7391 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
7392 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
7393 | || reloc_type[0] == BFD_RELOC_64 | |
7394 | || reloc_type[0] == BFD_RELOC_CTOR | |
7395 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
7396 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
7397 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
7398 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
7399 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
7400 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT | |
7401 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
7402 | || hi16_reloc_p (reloc_type[0]) | |
7403 | || lo16_reloc_p (reloc_type[0]))) | |
7404 | ip->fixp[0]->fx_no_overflow = 1; | |
7405 | ||
ddaf2c41 MR |
7406 | /* These relocations can have an addend that won't fit in 2 octets. */ |
7407 | if (reloc_type[0] == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
7408 | || reloc_type[0] == BFD_RELOC_MICROMIPS_10_PCREL_S1) | |
7409 | ip->fixp[0]->fx_no_overflow = 1; | |
7410 | ||
9fe77896 RS |
7411 | if (mips_relax.sequence) |
7412 | { | |
7413 | if (mips_relax.first_fixup == 0) | |
7414 | mips_relax.first_fixup = ip->fixp[0]; | |
7415 | } | |
7416 | else if (reloc_needs_lo_p (*reloc_type)) | |
7417 | { | |
7418 | struct mips_hi_fixup *hi_fixup; | |
7419 | ||
7420 | /* Reuse the last entry if it already has a matching %lo. */ | |
7421 | hi_fixup = mips_hi_fixup_list; | |
7422 | if (hi_fixup == 0 | |
7423 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
4d7206a2 | 7424 | { |
325801bd | 7425 | hi_fixup = XNEW (struct mips_hi_fixup); |
9fe77896 RS |
7426 | hi_fixup->next = mips_hi_fixup_list; |
7427 | mips_hi_fixup_list = hi_fixup; | |
4d7206a2 | 7428 | } |
9fe77896 RS |
7429 | hi_fixup->fixp = ip->fixp[0]; |
7430 | hi_fixup->seg = now_seg; | |
7431 | } | |
252b5132 | 7432 | |
9fe77896 RS |
7433 | /* Add fixups for the second and third relocations, if given. |
7434 | Note that the ABI allows the second relocation to be | |
7435 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
7436 | moment we only use RSS_UNDEF, but we could add support | |
7437 | for the others if it ever becomes necessary. */ | |
7438 | for (i = 1; i < 3; i++) | |
7439 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
7440 | { | |
7441 | ip->fixp[i] = fix_new (ip->frag, ip->where, | |
7442 | ip->fixp[0]->fx_size, NULL, 0, | |
df58fc94 | 7443 | FALSE, final_type[i]); |
f6688943 | 7444 | |
9fe77896 RS |
7445 | /* Use fx_tcbit to mark compound relocs. */ |
7446 | ip->fixp[0]->fx_tcbit = 1; | |
7447 | ip->fixp[i]->fx_tcbit = 1; | |
7448 | } | |
252b5132 | 7449 | } |
1e915849 | 7450 | install_insn (ip); |
252b5132 RH |
7451 | |
7452 | /* Update the register mask information. */ | |
4c260379 RS |
7453 | mips_gprmask |= gpr_read_mask (ip) | gpr_write_mask (ip); |
7454 | mips_cprmask[1] |= fpr_read_mask (ip) | fpr_write_mask (ip); | |
252b5132 | 7455 | |
a4e06468 | 7456 | switch (method) |
252b5132 | 7457 | { |
a4e06468 RS |
7458 | case APPEND_ADD: |
7459 | insert_into_history (0, 1, ip); | |
7460 | break; | |
7461 | ||
7462 | case APPEND_ADD_WITH_NOP: | |
14fe068b RS |
7463 | { |
7464 | struct mips_cl_insn *nop; | |
7465 | ||
7466 | insert_into_history (0, 1, ip); | |
7467 | nop = get_delay_slot_nop (ip); | |
7468 | add_fixed_insn (nop); | |
7469 | insert_into_history (0, 1, nop); | |
7470 | if (mips_relax.sequence) | |
7471 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (nop); | |
7472 | } | |
a4e06468 RS |
7473 | break; |
7474 | ||
7475 | case APPEND_ADD_COMPACT: | |
7476 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
7477 | gas_assert (mips_opts.mips16); | |
7478 | ip->insn_opcode |= 0x0080; | |
7479 | find_altered_mips16_opcode (ip); | |
7480 | install_insn (ip); | |
7481 | insert_into_history (0, 1, ip); | |
7482 | break; | |
7483 | ||
7484 | case APPEND_SWAP: | |
7485 | { | |
7486 | struct mips_cl_insn delay = history[0]; | |
7487 | if (mips_opts.mips16) | |
7488 | { | |
7489 | know (delay.frag == ip->frag); | |
7490 | move_insn (ip, delay.frag, delay.where); | |
7491 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
7492 | } | |
464ab0e5 | 7493 | else if (relaxed_branch || delay.frag != ip->frag) |
a4e06468 RS |
7494 | { |
7495 | /* Add the delay slot instruction to the end of the | |
7496 | current frag and shrink the fixed part of the | |
7497 | original frag. If the branch occupies the tail of | |
7498 | the latter, move it backwards to cover the gap. */ | |
2b0c8b40 | 7499 | delay.frag->fr_fix -= branch_disp; |
a4e06468 | 7500 | if (delay.frag == ip->frag) |
2b0c8b40 | 7501 | move_insn (ip, ip->frag, ip->where - branch_disp); |
a4e06468 RS |
7502 | add_fixed_insn (&delay); |
7503 | } | |
7504 | else | |
7505 | { | |
2b0c8b40 MR |
7506 | move_insn (&delay, ip->frag, |
7507 | ip->where - branch_disp + insn_length (ip)); | |
a4e06468 RS |
7508 | move_insn (ip, history[0].frag, history[0].where); |
7509 | } | |
7510 | history[0] = *ip; | |
7511 | delay.fixed_p = 1; | |
7512 | insert_into_history (0, 1, &delay); | |
7513 | } | |
7514 | break; | |
252b5132 RH |
7515 | } |
7516 | ||
13408f1e | 7517 | /* If we have just completed an unconditional branch, clear the history. */ |
11625dd8 RS |
7518 | if ((delayed_branch_p (&history[1]) && uncond_branch_p (&history[1])) |
7519 | || (compact_branch_p (&history[0]) && uncond_branch_p (&history[0]))) | |
e407c74b NC |
7520 | { |
7521 | unsigned int i; | |
7522 | ||
79850f26 | 7523 | mips_no_prev_insn (); |
13408f1e | 7524 | |
e407c74b | 7525 | for (i = 0; i < ARRAY_SIZE (history); i++) |
79850f26 | 7526 | history[i].cleared_p = 1; |
e407c74b NC |
7527 | } |
7528 | ||
df58fc94 RS |
7529 | /* We need to emit a label at the end of branch-likely macros. */ |
7530 | if (emit_branch_likely_macro) | |
7531 | { | |
7532 | emit_branch_likely_macro = FALSE; | |
7533 | micromips_add_label (); | |
7534 | } | |
7535 | ||
252b5132 RH |
7536 | /* We just output an insn, so the next one doesn't have a label. */ |
7537 | mips_clear_insn_labels (); | |
252b5132 RH |
7538 | } |
7539 | ||
e407c74b NC |
7540 | /* Forget that there was any previous instruction or label. |
7541 | When BRANCH is true, the branch history is also flushed. */ | |
252b5132 RH |
7542 | |
7543 | static void | |
7d10b47d | 7544 | mips_no_prev_insn (void) |
252b5132 | 7545 | { |
7d10b47d RS |
7546 | prev_nop_frag = NULL; |
7547 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
7548 | mips_clear_insn_labels (); |
7549 | } | |
7550 | ||
7d10b47d RS |
7551 | /* This function must be called before we emit something other than |
7552 | instructions. It is like mips_no_prev_insn except that it inserts | |
7553 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 7554 | |
7d10b47d RS |
7555 | void |
7556 | mips_emit_delays (void) | |
252b5132 RH |
7557 | { |
7558 | if (! mips_opts.noreorder) | |
7559 | { | |
932d1a1b | 7560 | int nops = nops_for_insn (0, history, NULL); |
252b5132 RH |
7561 | if (nops > 0) |
7562 | { | |
7d10b47d RS |
7563 | while (nops-- > 0) |
7564 | add_fixed_insn (NOP_INSN); | |
462427c4 | 7565 | mips_move_text_labels (); |
7d10b47d RS |
7566 | } |
7567 | } | |
7568 | mips_no_prev_insn (); | |
7569 | } | |
7570 | ||
7571 | /* Start a (possibly nested) noreorder block. */ | |
7572 | ||
7573 | static void | |
7574 | start_noreorder (void) | |
7575 | { | |
7576 | if (mips_opts.noreorder == 0) | |
7577 | { | |
7578 | unsigned int i; | |
7579 | int nops; | |
7580 | ||
7581 | /* None of the instructions before the .set noreorder can be moved. */ | |
7582 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
7583 | history[i].fixed_p = 1; | |
7584 | ||
7585 | /* Insert any nops that might be needed between the .set noreorder | |
7586 | block and the previous instructions. We will later remove any | |
7587 | nops that turn out not to be needed. */ | |
932d1a1b | 7588 | nops = nops_for_insn (0, history, NULL); |
7d10b47d RS |
7589 | if (nops > 0) |
7590 | { | |
7591 | if (mips_optimize != 0) | |
252b5132 RH |
7592 | { |
7593 | /* Record the frag which holds the nop instructions, so | |
7594 | that we can remove them if we don't need them. */ | |
df58fc94 | 7595 | frag_grow (nops * NOP_INSN_SIZE); |
252b5132 RH |
7596 | prev_nop_frag = frag_now; |
7597 | prev_nop_frag_holds = nops; | |
7598 | prev_nop_frag_required = 0; | |
7599 | prev_nop_frag_since = 0; | |
7600 | } | |
7601 | ||
7602 | for (; nops > 0; --nops) | |
1e915849 | 7603 | add_fixed_insn (NOP_INSN); |
252b5132 | 7604 | |
7d10b47d RS |
7605 | /* Move on to a new frag, so that it is safe to simply |
7606 | decrease the size of prev_nop_frag. */ | |
7607 | frag_wane (frag_now); | |
7608 | frag_new (0); | |
462427c4 | 7609 | mips_move_text_labels (); |
252b5132 | 7610 | } |
df58fc94 | 7611 | mips_mark_labels (); |
7d10b47d | 7612 | mips_clear_insn_labels (); |
252b5132 | 7613 | } |
7d10b47d RS |
7614 | mips_opts.noreorder++; |
7615 | mips_any_noreorder = 1; | |
7616 | } | |
252b5132 | 7617 | |
7d10b47d | 7618 | /* End a nested noreorder block. */ |
252b5132 | 7619 | |
7d10b47d RS |
7620 | static void |
7621 | end_noreorder (void) | |
7622 | { | |
7623 | mips_opts.noreorder--; | |
7624 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
7625 | { | |
7626 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
7627 | handling nop insertion the .set reorder way. */ | |
7628 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
df58fc94 | 7629 | * NOP_INSN_SIZE); |
7d10b47d RS |
7630 | insert_into_history (prev_nop_frag_since, |
7631 | prev_nop_frag_required, NOP_INSN); | |
7632 | prev_nop_frag = NULL; | |
7633 | } | |
252b5132 RH |
7634 | } |
7635 | ||
97d87491 RS |
7636 | /* Sign-extend 32-bit mode constants that have bit 31 set and all |
7637 | higher bits unset. */ | |
7638 | ||
7639 | static void | |
7640 | normalize_constant_expr (expressionS *ex) | |
7641 | { | |
7642 | if (ex->X_op == O_constant | |
7643 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
7644 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
7645 | - 0x80000000); | |
7646 | } | |
7647 | ||
7648 | /* Sign-extend 32-bit mode address offsets that have bit 31 set and | |
7649 | all higher bits unset. */ | |
7650 | ||
7651 | static void | |
7652 | normalize_address_expr (expressionS *ex) | |
7653 | { | |
7654 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
7655 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
7656 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
7657 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
7658 | - 0x80000000); | |
7659 | } | |
7660 | ||
7661 | /* Try to match TOKENS against OPCODE, storing the result in INSN. | |
7662 | Return true if the match was successful. | |
7663 | ||
7664 | OPCODE_EXTRA is a value that should be ORed into the opcode | |
7665 | (used for VU0 channel suffixes, etc.). MORE_ALTS is true if | |
7666 | there are more alternatives after OPCODE and SOFT_MATCH is | |
7667 | as for mips_arg_info. */ | |
7668 | ||
7669 | static bfd_boolean | |
7670 | match_insn (struct mips_cl_insn *insn, const struct mips_opcode *opcode, | |
7671 | struct mips_operand_token *tokens, unsigned int opcode_extra, | |
60f20e8b | 7672 | bfd_boolean lax_match, bfd_boolean complete_p) |
97d87491 RS |
7673 | { |
7674 | const char *args; | |
7675 | struct mips_arg_info arg; | |
7676 | const struct mips_operand *operand; | |
7677 | char c; | |
7678 | ||
7679 | imm_expr.X_op = O_absent; | |
97d87491 RS |
7680 | offset_expr.X_op = O_absent; |
7681 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
7682 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
7683 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
7684 | ||
7685 | create_insn (insn, opcode); | |
60f20e8b RS |
7686 | /* When no opcode suffix is specified, assume ".xyzw". */ |
7687 | if ((opcode->pinfo2 & INSN2_VU0_CHANNEL_SUFFIX) != 0 && opcode_extra == 0) | |
7688 | insn->insn_opcode |= 0xf << mips_vu0_channel_mask.lsb; | |
7689 | else | |
7690 | insn->insn_opcode |= opcode_extra; | |
97d87491 RS |
7691 | memset (&arg, 0, sizeof (arg)); |
7692 | arg.insn = insn; | |
7693 | arg.token = tokens; | |
7694 | arg.argnum = 1; | |
7695 | arg.last_regno = ILLEGAL_REG; | |
7696 | arg.dest_regno = ILLEGAL_REG; | |
60f20e8b | 7697 | arg.lax_match = lax_match; |
97d87491 RS |
7698 | for (args = opcode->args;; ++args) |
7699 | { | |
7700 | if (arg.token->type == OT_END) | |
7701 | { | |
7702 | /* Handle unary instructions in which only one operand is given. | |
7703 | The source is then the same as the destination. */ | |
7704 | if (arg.opnum == 1 && *args == ',') | |
7705 | { | |
7706 | operand = (mips_opts.micromips | |
7707 | ? decode_micromips_operand (args + 1) | |
7708 | : decode_mips_operand (args + 1)); | |
7709 | if (operand && mips_optional_operand_p (operand)) | |
7710 | { | |
7711 | arg.token = tokens; | |
7712 | arg.argnum = 1; | |
7713 | continue; | |
7714 | } | |
7715 | } | |
7716 | ||
7717 | /* Treat elided base registers as $0. */ | |
7718 | if (strcmp (args, "(b)") == 0) | |
7719 | args += 3; | |
7720 | ||
7721 | if (args[0] == '+') | |
7722 | switch (args[1]) | |
7723 | { | |
7724 | case 'K': | |
7725 | case 'N': | |
7726 | /* The register suffix is optional. */ | |
7727 | args += 2; | |
7728 | break; | |
7729 | } | |
7730 | ||
7731 | /* Fail the match if there were too few operands. */ | |
7732 | if (*args) | |
7733 | return FALSE; | |
7734 | ||
7735 | /* Successful match. */ | |
60f20e8b RS |
7736 | if (!complete_p) |
7737 | return TRUE; | |
e3de51ce | 7738 | clear_insn_error (); |
97d87491 RS |
7739 | if (arg.dest_regno == arg.last_regno |
7740 | && strncmp (insn->insn_mo->name, "jalr", 4) == 0) | |
7741 | { | |
7742 | if (arg.opnum == 2) | |
e3de51ce | 7743 | set_insn_error |
1661c76c | 7744 | (0, _("source and destination must be different")); |
97d87491 | 7745 | else if (arg.last_regno == 31) |
e3de51ce | 7746 | set_insn_error |
1661c76c | 7747 | (0, _("a destination register must be supplied")); |
97d87491 | 7748 | } |
173d3447 CF |
7749 | else if (arg.last_regno == 31 |
7750 | && (strncmp (insn->insn_mo->name, "bltzal", 6) == 0 | |
7751 | || strncmp (insn->insn_mo->name, "bgezal", 6) == 0)) | |
7752 | set_insn_error (0, _("the source register must not be $31")); | |
97d87491 RS |
7753 | check_completed_insn (&arg); |
7754 | return TRUE; | |
7755 | } | |
7756 | ||
7757 | /* Fail the match if the line has too many operands. */ | |
7758 | if (*args == 0) | |
7759 | return FALSE; | |
7760 | ||
7761 | /* Handle characters that need to match exactly. */ | |
7762 | if (*args == '(' || *args == ')' || *args == ',') | |
7763 | { | |
7764 | if (match_char (&arg, *args)) | |
7765 | continue; | |
7766 | return FALSE; | |
7767 | } | |
7768 | if (*args == '#') | |
7769 | { | |
7770 | ++args; | |
7771 | if (arg.token->type == OT_DOUBLE_CHAR | |
7772 | && arg.token->u.ch == *args) | |
7773 | { | |
7774 | ++arg.token; | |
7775 | continue; | |
7776 | } | |
7777 | return FALSE; | |
7778 | } | |
7779 | ||
7780 | /* Handle special macro operands. Work out the properties of | |
7781 | other operands. */ | |
7782 | arg.opnum += 1; | |
97d87491 RS |
7783 | switch (*args) |
7784 | { | |
7361da2c AB |
7785 | case '-': |
7786 | switch (args[1]) | |
7787 | { | |
7788 | case 'A': | |
7789 | *offset_reloc = BFD_RELOC_MIPS_19_PCREL_S2; | |
7790 | break; | |
7791 | ||
7792 | case 'B': | |
7793 | *offset_reloc = BFD_RELOC_MIPS_18_PCREL_S3; | |
7794 | break; | |
7795 | } | |
7796 | break; | |
7797 | ||
97d87491 RS |
7798 | case '+': |
7799 | switch (args[1]) | |
7800 | { | |
97d87491 RS |
7801 | case 'i': |
7802 | *offset_reloc = BFD_RELOC_MIPS_JMP; | |
7803 | break; | |
7361da2c AB |
7804 | |
7805 | case '\'': | |
7806 | *offset_reloc = BFD_RELOC_MIPS_26_PCREL_S2; | |
7807 | break; | |
7808 | ||
7809 | case '\"': | |
7810 | *offset_reloc = BFD_RELOC_MIPS_21_PCREL_S2; | |
7811 | break; | |
97d87491 RS |
7812 | } |
7813 | break; | |
7814 | ||
97d87491 | 7815 | case 'I': |
1a00e612 RS |
7816 | if (!match_const_int (&arg, &imm_expr.X_add_number)) |
7817 | return FALSE; | |
7818 | imm_expr.X_op = O_constant; | |
bad1aba3 | 7819 | if (GPR_SIZE == 32) |
97d87491 RS |
7820 | normalize_constant_expr (&imm_expr); |
7821 | continue; | |
7822 | ||
7823 | case 'A': | |
7824 | if (arg.token->type == OT_CHAR && arg.token->u.ch == '(') | |
7825 | { | |
7826 | /* Assume that the offset has been elided and that what | |
7827 | we saw was a base register. The match will fail later | |
7828 | if that assumption turns out to be wrong. */ | |
7829 | offset_expr.X_op = O_constant; | |
7830 | offset_expr.X_add_number = 0; | |
7831 | } | |
97d87491 | 7832 | else |
1a00e612 RS |
7833 | { |
7834 | if (!match_expression (&arg, &offset_expr, offset_reloc)) | |
7835 | return FALSE; | |
7836 | normalize_address_expr (&offset_expr); | |
7837 | } | |
97d87491 RS |
7838 | continue; |
7839 | ||
7840 | case 'F': | |
7841 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7842 | 8, TRUE)) | |
1a00e612 | 7843 | return FALSE; |
97d87491 RS |
7844 | continue; |
7845 | ||
7846 | case 'L': | |
7847 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7848 | 8, FALSE)) | |
1a00e612 | 7849 | return FALSE; |
97d87491 RS |
7850 | continue; |
7851 | ||
7852 | case 'f': | |
7853 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7854 | 4, TRUE)) | |
1a00e612 | 7855 | return FALSE; |
97d87491 RS |
7856 | continue; |
7857 | ||
7858 | case 'l': | |
7859 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7860 | 4, FALSE)) | |
1a00e612 | 7861 | return FALSE; |
97d87491 RS |
7862 | continue; |
7863 | ||
97d87491 RS |
7864 | case 'p': |
7865 | *offset_reloc = BFD_RELOC_16_PCREL_S2; | |
7866 | break; | |
7867 | ||
7868 | case 'a': | |
7869 | *offset_reloc = BFD_RELOC_MIPS_JMP; | |
7870 | break; | |
7871 | ||
7872 | case 'm': | |
7873 | gas_assert (mips_opts.micromips); | |
7874 | c = args[1]; | |
7875 | switch (c) | |
7876 | { | |
7877 | case 'D': | |
7878 | case 'E': | |
7879 | if (!forced_insn_length) | |
7880 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; | |
7881 | else if (c == 'D') | |
7882 | *offset_reloc = BFD_RELOC_MICROMIPS_10_PCREL_S1; | |
7883 | else | |
7884 | *offset_reloc = BFD_RELOC_MICROMIPS_7_PCREL_S1; | |
7885 | break; | |
7886 | } | |
7887 | break; | |
7888 | } | |
7889 | ||
7890 | operand = (mips_opts.micromips | |
7891 | ? decode_micromips_operand (args) | |
7892 | : decode_mips_operand (args)); | |
7893 | if (!operand) | |
7894 | abort (); | |
7895 | ||
7896 | /* Skip prefixes. */ | |
7361da2c | 7897 | if (*args == '+' || *args == 'm' || *args == '-') |
97d87491 RS |
7898 | args++; |
7899 | ||
7900 | if (mips_optional_operand_p (operand) | |
7901 | && args[1] == ',' | |
7902 | && (arg.token[0].type != OT_REG | |
7903 | || arg.token[1].type == OT_END)) | |
7904 | { | |
7905 | /* Assume that the register has been elided and is the | |
7906 | same as the first operand. */ | |
7907 | arg.token = tokens; | |
7908 | arg.argnum = 1; | |
7909 | } | |
7910 | ||
7911 | if (!match_operand (&arg, operand)) | |
7912 | return FALSE; | |
7913 | } | |
7914 | } | |
7915 | ||
7916 | /* Like match_insn, but for MIPS16. */ | |
7917 | ||
7918 | static bfd_boolean | |
7919 | match_mips16_insn (struct mips_cl_insn *insn, const struct mips_opcode *opcode, | |
1a00e612 | 7920 | struct mips_operand_token *tokens) |
97d87491 RS |
7921 | { |
7922 | const char *args; | |
7923 | const struct mips_operand *operand; | |
7924 | const struct mips_operand *ext_operand; | |
7925 | struct mips_arg_info arg; | |
7926 | int relax_char; | |
7927 | ||
7928 | create_insn (insn, opcode); | |
7929 | imm_expr.X_op = O_absent; | |
97d87491 RS |
7930 | offset_expr.X_op = O_absent; |
7931 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
7932 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
7933 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
7934 | relax_char = 0; | |
7935 | ||
7936 | memset (&arg, 0, sizeof (arg)); | |
7937 | arg.insn = insn; | |
7938 | arg.token = tokens; | |
7939 | arg.argnum = 1; | |
7940 | arg.last_regno = ILLEGAL_REG; | |
7941 | arg.dest_regno = ILLEGAL_REG; | |
97d87491 RS |
7942 | relax_char = 0; |
7943 | for (args = opcode->args;; ++args) | |
7944 | { | |
7945 | int c; | |
7946 | ||
7947 | if (arg.token->type == OT_END) | |
7948 | { | |
7949 | offsetT value; | |
7950 | ||
7951 | /* Handle unary instructions in which only one operand is given. | |
7952 | The source is then the same as the destination. */ | |
7953 | if (arg.opnum == 1 && *args == ',') | |
7954 | { | |
7955 | operand = decode_mips16_operand (args[1], FALSE); | |
7956 | if (operand && mips_optional_operand_p (operand)) | |
7957 | { | |
7958 | arg.token = tokens; | |
7959 | arg.argnum = 1; | |
7960 | continue; | |
7961 | } | |
7962 | } | |
7963 | ||
7964 | /* Fail the match if there were too few operands. */ | |
7965 | if (*args) | |
7966 | return FALSE; | |
7967 | ||
7968 | /* Successful match. Stuff the immediate value in now, if | |
7969 | we can. */ | |
e3de51ce | 7970 | clear_insn_error (); |
97d87491 RS |
7971 | if (opcode->pinfo == INSN_MACRO) |
7972 | { | |
7973 | gas_assert (relax_char == 0 || relax_char == 'p'); | |
7974 | gas_assert (*offset_reloc == BFD_RELOC_UNUSED); | |
7975 | } | |
7976 | else if (relax_char | |
7977 | && offset_expr.X_op == O_constant | |
7978 | && calculate_reloc (*offset_reloc, | |
7979 | offset_expr.X_add_number, | |
7980 | &value)) | |
7981 | { | |
7982 | mips16_immed (NULL, 0, relax_char, *offset_reloc, value, | |
7983 | forced_insn_length, &insn->insn_opcode); | |
7984 | offset_expr.X_op = O_absent; | |
7985 | *offset_reloc = BFD_RELOC_UNUSED; | |
7986 | } | |
7987 | else if (relax_char && *offset_reloc != BFD_RELOC_UNUSED) | |
7988 | { | |
7989 | if (forced_insn_length == 2) | |
e3de51ce | 7990 | set_insn_error (0, _("invalid unextended operand value")); |
97d87491 RS |
7991 | forced_insn_length = 4; |
7992 | insn->insn_opcode |= MIPS16_EXTEND; | |
7993 | } | |
7994 | else if (relax_char) | |
7995 | *offset_reloc = (int) BFD_RELOC_UNUSED + relax_char; | |
7996 | ||
7997 | check_completed_insn (&arg); | |
7998 | return TRUE; | |
7999 | } | |
8000 | ||
8001 | /* Fail the match if the line has too many operands. */ | |
8002 | if (*args == 0) | |
8003 | return FALSE; | |
8004 | ||
8005 | /* Handle characters that need to match exactly. */ | |
8006 | if (*args == '(' || *args == ')' || *args == ',') | |
8007 | { | |
8008 | if (match_char (&arg, *args)) | |
8009 | continue; | |
8010 | return FALSE; | |
8011 | } | |
8012 | ||
8013 | arg.opnum += 1; | |
8014 | c = *args; | |
8015 | switch (c) | |
8016 | { | |
8017 | case 'p': | |
8018 | case 'q': | |
8019 | case 'A': | |
8020 | case 'B': | |
8021 | case 'E': | |
8022 | relax_char = c; | |
8023 | break; | |
8024 | ||
8025 | case 'I': | |
1a00e612 RS |
8026 | if (!match_const_int (&arg, &imm_expr.X_add_number)) |
8027 | return FALSE; | |
8028 | imm_expr.X_op = O_constant; | |
bad1aba3 | 8029 | if (GPR_SIZE == 32) |
97d87491 RS |
8030 | normalize_constant_expr (&imm_expr); |
8031 | continue; | |
8032 | ||
8033 | case 'a': | |
8034 | case 'i': | |
8035 | *offset_reloc = BFD_RELOC_MIPS16_JMP; | |
8036 | insn->insn_opcode <<= 16; | |
8037 | break; | |
8038 | } | |
8039 | ||
8040 | operand = decode_mips16_operand (c, FALSE); | |
8041 | if (!operand) | |
8042 | abort (); | |
8043 | ||
8044 | /* '6' is a special case. It is used for BREAK and SDBBP, | |
8045 | whose operands are only meaningful to the software that decodes | |
8046 | them. This means that there is no architectural reason why | |
8047 | they cannot be prefixed by EXTEND, but in practice, | |
8048 | exception handlers will only look at the instruction | |
8049 | itself. We therefore allow '6' to be extended when | |
8050 | disassembling but not when assembling. */ | |
8051 | if (operand->type != OP_PCREL && c != '6') | |
8052 | { | |
8053 | ext_operand = decode_mips16_operand (c, TRUE); | |
8054 | if (operand != ext_operand) | |
8055 | { | |
8056 | if (arg.token->type == OT_CHAR && arg.token->u.ch == '(') | |
8057 | { | |
8058 | offset_expr.X_op = O_constant; | |
8059 | offset_expr.X_add_number = 0; | |
8060 | relax_char = c; | |
8061 | continue; | |
8062 | } | |
8063 | ||
8064 | /* We need the OT_INTEGER check because some MIPS16 | |
8065 | immediate variants are listed before the register ones. */ | |
8066 | if (arg.token->type != OT_INTEGER | |
8067 | || !match_expression (&arg, &offset_expr, offset_reloc)) | |
8068 | return FALSE; | |
8069 | ||
8070 | /* '8' is used for SLTI(U) and has traditionally not | |
8071 | been allowed to take relocation operators. */ | |
8072 | if (offset_reloc[0] != BFD_RELOC_UNUSED | |
8073 | && (ext_operand->size != 16 || c == '8')) | |
8074 | return FALSE; | |
8075 | ||
8076 | relax_char = c; | |
8077 | continue; | |
8078 | } | |
8079 | } | |
8080 | ||
8081 | if (mips_optional_operand_p (operand) | |
8082 | && args[1] == ',' | |
8083 | && (arg.token[0].type != OT_REG | |
8084 | || arg.token[1].type == OT_END)) | |
8085 | { | |
8086 | /* Assume that the register has been elided and is the | |
8087 | same as the first operand. */ | |
8088 | arg.token = tokens; | |
8089 | arg.argnum = 1; | |
8090 | } | |
8091 | ||
8092 | if (!match_operand (&arg, operand)) | |
8093 | return FALSE; | |
8094 | } | |
8095 | } | |
8096 | ||
60f20e8b RS |
8097 | /* Record that the current instruction is invalid for the current ISA. */ |
8098 | ||
8099 | static void | |
8100 | match_invalid_for_isa (void) | |
8101 | { | |
8102 | set_insn_error_ss | |
1661c76c | 8103 | (0, _("opcode not supported on this processor: %s (%s)"), |
60f20e8b RS |
8104 | mips_cpu_info_from_arch (mips_opts.arch)->name, |
8105 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
8106 | } | |
8107 | ||
8108 | /* Try to match TOKENS against a series of opcode entries, starting at FIRST. | |
8109 | Return true if a definite match or failure was found, storing any match | |
8110 | in INSN. OPCODE_EXTRA is a value that should be ORed into the opcode | |
8111 | (to handle things like VU0 suffixes). LAX_MATCH is true if we have already | |
8112 | tried and failed to match under normal conditions and now want to try a | |
8113 | more relaxed match. */ | |
8114 | ||
8115 | static bfd_boolean | |
8116 | match_insns (struct mips_cl_insn *insn, const struct mips_opcode *first, | |
8117 | const struct mips_opcode *past, struct mips_operand_token *tokens, | |
8118 | int opcode_extra, bfd_boolean lax_match) | |
8119 | { | |
8120 | const struct mips_opcode *opcode; | |
8121 | const struct mips_opcode *invalid_delay_slot; | |
8122 | bfd_boolean seen_valid_for_isa, seen_valid_for_size; | |
8123 | ||
8124 | /* Search for a match, ignoring alternatives that don't satisfy the | |
8125 | current ISA or forced_length. */ | |
8126 | invalid_delay_slot = 0; | |
8127 | seen_valid_for_isa = FALSE; | |
8128 | seen_valid_for_size = FALSE; | |
8129 | opcode = first; | |
8130 | do | |
8131 | { | |
8132 | gas_assert (strcmp (opcode->name, first->name) == 0); | |
8133 | if (is_opcode_valid (opcode)) | |
8134 | { | |
8135 | seen_valid_for_isa = TRUE; | |
8136 | if (is_size_valid (opcode)) | |
8137 | { | |
8138 | bfd_boolean delay_slot_ok; | |
8139 | ||
8140 | seen_valid_for_size = TRUE; | |
8141 | delay_slot_ok = is_delay_slot_valid (opcode); | |
8142 | if (match_insn (insn, opcode, tokens, opcode_extra, | |
8143 | lax_match, delay_slot_ok)) | |
8144 | { | |
8145 | if (!delay_slot_ok) | |
8146 | { | |
8147 | if (!invalid_delay_slot) | |
8148 | invalid_delay_slot = opcode; | |
8149 | } | |
8150 | else | |
8151 | return TRUE; | |
8152 | } | |
8153 | } | |
8154 | } | |
8155 | ++opcode; | |
8156 | } | |
8157 | while (opcode < past && strcmp (opcode->name, first->name) == 0); | |
8158 | ||
8159 | /* If the only matches we found had the wrong length for the delay slot, | |
8160 | pick the first such match. We'll issue an appropriate warning later. */ | |
8161 | if (invalid_delay_slot) | |
8162 | { | |
8163 | if (match_insn (insn, invalid_delay_slot, tokens, opcode_extra, | |
8164 | lax_match, TRUE)) | |
8165 | return TRUE; | |
8166 | abort (); | |
8167 | } | |
8168 | ||
8169 | /* Handle the case where we didn't try to match an instruction because | |
8170 | all the alternatives were incompatible with the current ISA. */ | |
8171 | if (!seen_valid_for_isa) | |
8172 | { | |
8173 | match_invalid_for_isa (); | |
8174 | return TRUE; | |
8175 | } | |
8176 | ||
8177 | /* Handle the case where we didn't try to match an instruction because | |
8178 | all the alternatives were of the wrong size. */ | |
8179 | if (!seen_valid_for_size) | |
8180 | { | |
8181 | if (mips_opts.insn32) | |
1661c76c | 8182 | set_insn_error (0, _("opcode not supported in the `insn32' mode")); |
60f20e8b RS |
8183 | else |
8184 | set_insn_error_i | |
1661c76c | 8185 | (0, _("unrecognized %d-bit version of microMIPS opcode"), |
60f20e8b RS |
8186 | 8 * forced_insn_length); |
8187 | return TRUE; | |
8188 | } | |
8189 | ||
8190 | return FALSE; | |
8191 | } | |
8192 | ||
8193 | /* Like match_insns, but for MIPS16. */ | |
8194 | ||
8195 | static bfd_boolean | |
8196 | match_mips16_insns (struct mips_cl_insn *insn, const struct mips_opcode *first, | |
8197 | struct mips_operand_token *tokens) | |
8198 | { | |
8199 | const struct mips_opcode *opcode; | |
8200 | bfd_boolean seen_valid_for_isa; | |
8201 | ||
8202 | /* Search for a match, ignoring alternatives that don't satisfy the | |
8203 | current ISA. There are no separate entries for extended forms so | |
8204 | we deal with forced_length later. */ | |
8205 | seen_valid_for_isa = FALSE; | |
8206 | opcode = first; | |
8207 | do | |
8208 | { | |
8209 | gas_assert (strcmp (opcode->name, first->name) == 0); | |
8210 | if (is_opcode_valid_16 (opcode)) | |
8211 | { | |
8212 | seen_valid_for_isa = TRUE; | |
8213 | if (match_mips16_insn (insn, opcode, tokens)) | |
8214 | return TRUE; | |
8215 | } | |
8216 | ++opcode; | |
8217 | } | |
8218 | while (opcode < &mips16_opcodes[bfd_mips16_num_opcodes] | |
8219 | && strcmp (opcode->name, first->name) == 0); | |
8220 | ||
8221 | /* Handle the case where we didn't try to match an instruction because | |
8222 | all the alternatives were incompatible with the current ISA. */ | |
8223 | if (!seen_valid_for_isa) | |
8224 | { | |
8225 | match_invalid_for_isa (); | |
8226 | return TRUE; | |
8227 | } | |
8228 | ||
8229 | return FALSE; | |
8230 | } | |
8231 | ||
584892a6 RS |
8232 | /* Set up global variables for the start of a new macro. */ |
8233 | ||
8234 | static void | |
8235 | macro_start (void) | |
8236 | { | |
8237 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
df58fc94 RS |
8238 | memset (&mips_macro_warning.first_insn_sizes, 0, |
8239 | sizeof (mips_macro_warning.first_insn_sizes)); | |
8240 | memset (&mips_macro_warning.insns, 0, sizeof (mips_macro_warning.insns)); | |
584892a6 | 8241 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder |
11625dd8 | 8242 | && delayed_branch_p (&history[0])); |
df58fc94 RS |
8243 | switch (history[0].insn_mo->pinfo2 |
8244 | & (INSN2_BRANCH_DELAY_32BIT | INSN2_BRANCH_DELAY_16BIT)) | |
8245 | { | |
8246 | case INSN2_BRANCH_DELAY_32BIT: | |
8247 | mips_macro_warning.delay_slot_length = 4; | |
8248 | break; | |
8249 | case INSN2_BRANCH_DELAY_16BIT: | |
8250 | mips_macro_warning.delay_slot_length = 2; | |
8251 | break; | |
8252 | default: | |
8253 | mips_macro_warning.delay_slot_length = 0; | |
8254 | break; | |
8255 | } | |
8256 | mips_macro_warning.first_frag = NULL; | |
584892a6 RS |
8257 | } |
8258 | ||
df58fc94 RS |
8259 | /* Given that a macro is longer than one instruction or of the wrong size, |
8260 | return the appropriate warning for it. Return null if no warning is | |
8261 | needed. SUBTYPE is a bitmask of RELAX_DELAY_SLOT, RELAX_DELAY_SLOT_16BIT, | |
8262 | RELAX_DELAY_SLOT_SIZE_FIRST, RELAX_DELAY_SLOT_SIZE_SECOND, | |
8263 | and RELAX_NOMACRO. */ | |
584892a6 RS |
8264 | |
8265 | static const char * | |
8266 | macro_warning (relax_substateT subtype) | |
8267 | { | |
8268 | if (subtype & RELAX_DELAY_SLOT) | |
1661c76c | 8269 | return _("macro instruction expanded into multiple instructions" |
584892a6 RS |
8270 | " in a branch delay slot"); |
8271 | else if (subtype & RELAX_NOMACRO) | |
1661c76c | 8272 | return _("macro instruction expanded into multiple instructions"); |
df58fc94 RS |
8273 | else if (subtype & (RELAX_DELAY_SLOT_SIZE_FIRST |
8274 | | RELAX_DELAY_SLOT_SIZE_SECOND)) | |
8275 | return ((subtype & RELAX_DELAY_SLOT_16BIT) | |
1661c76c | 8276 | ? _("macro instruction expanded into a wrong size instruction" |
df58fc94 | 8277 | " in a 16-bit branch delay slot") |
1661c76c | 8278 | : _("macro instruction expanded into a wrong size instruction" |
df58fc94 | 8279 | " in a 32-bit branch delay slot")); |
584892a6 RS |
8280 | else |
8281 | return 0; | |
8282 | } | |
8283 | ||
8284 | /* Finish up a macro. Emit warnings as appropriate. */ | |
8285 | ||
8286 | static void | |
8287 | macro_end (void) | |
8288 | { | |
df58fc94 RS |
8289 | /* Relaxation warning flags. */ |
8290 | relax_substateT subtype = 0; | |
8291 | ||
8292 | /* Check delay slot size requirements. */ | |
8293 | if (mips_macro_warning.delay_slot_length == 2) | |
8294 | subtype |= RELAX_DELAY_SLOT_16BIT; | |
8295 | if (mips_macro_warning.delay_slot_length != 0) | |
584892a6 | 8296 | { |
df58fc94 RS |
8297 | if (mips_macro_warning.delay_slot_length |
8298 | != mips_macro_warning.first_insn_sizes[0]) | |
8299 | subtype |= RELAX_DELAY_SLOT_SIZE_FIRST; | |
8300 | if (mips_macro_warning.delay_slot_length | |
8301 | != mips_macro_warning.first_insn_sizes[1]) | |
8302 | subtype |= RELAX_DELAY_SLOT_SIZE_SECOND; | |
8303 | } | |
584892a6 | 8304 | |
df58fc94 RS |
8305 | /* Check instruction count requirements. */ |
8306 | if (mips_macro_warning.insns[0] > 1 || mips_macro_warning.insns[1] > 1) | |
8307 | { | |
8308 | if (mips_macro_warning.insns[1] > mips_macro_warning.insns[0]) | |
584892a6 RS |
8309 | subtype |= RELAX_SECOND_LONGER; |
8310 | if (mips_opts.warn_about_macros) | |
8311 | subtype |= RELAX_NOMACRO; | |
8312 | if (mips_macro_warning.delay_slot_p) | |
8313 | subtype |= RELAX_DELAY_SLOT; | |
df58fc94 | 8314 | } |
584892a6 | 8315 | |
df58fc94 RS |
8316 | /* If both alternatives fail to fill a delay slot correctly, |
8317 | emit the warning now. */ | |
8318 | if ((subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0 | |
8319 | && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0) | |
8320 | { | |
8321 | relax_substateT s; | |
8322 | const char *msg; | |
8323 | ||
8324 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
8325 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
8326 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
8327 | msg = macro_warning (s); | |
8328 | if (msg != NULL) | |
8329 | as_warn ("%s", msg); | |
8330 | subtype &= ~s; | |
8331 | } | |
8332 | ||
8333 | /* If both implementations are longer than 1 instruction, then emit the | |
8334 | warning now. */ | |
8335 | if (mips_macro_warning.insns[0] > 1 && mips_macro_warning.insns[1] > 1) | |
8336 | { | |
8337 | relax_substateT s; | |
8338 | const char *msg; | |
8339 | ||
8340 | s = subtype & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT); | |
8341 | msg = macro_warning (s); | |
8342 | if (msg != NULL) | |
8343 | as_warn ("%s", msg); | |
8344 | subtype &= ~s; | |
584892a6 | 8345 | } |
df58fc94 RS |
8346 | |
8347 | /* If any flags still set, then one implementation might need a warning | |
8348 | and the other either will need one of a different kind or none at all. | |
8349 | Pass any remaining flags over to relaxation. */ | |
8350 | if (mips_macro_warning.first_frag != NULL) | |
8351 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
584892a6 RS |
8352 | } |
8353 | ||
df58fc94 RS |
8354 | /* Instruction operand formats used in macros that vary between |
8355 | standard MIPS and microMIPS code. */ | |
8356 | ||
833794fc | 8357 | static const char * const brk_fmt[2][2] = { { "c", "c" }, { "mF", "c" } }; |
df58fc94 RS |
8358 | static const char * const cop12_fmt[2] = { "E,o(b)", "E,~(b)" }; |
8359 | static const char * const jalr_fmt[2] = { "d,s", "t,s" }; | |
8360 | static const char * const lui_fmt[2] = { "t,u", "s,u" }; | |
8361 | static const char * const mem12_fmt[2] = { "t,o(b)", "t,~(b)" }; | |
833794fc | 8362 | static const char * const mfhl_fmt[2][2] = { { "d", "d" }, { "mj", "s" } }; |
df58fc94 RS |
8363 | static const char * const shft_fmt[2] = { "d,w,<", "t,r,<" }; |
8364 | static const char * const trap_fmt[2] = { "s,t,q", "s,t,|" }; | |
8365 | ||
833794fc | 8366 | #define BRK_FMT (brk_fmt[mips_opts.micromips][mips_opts.insn32]) |
7361da2c AB |
8367 | #define COP12_FMT (ISA_IS_R6 (mips_opts.isa) ? "E,+:(d)" \ |
8368 | : cop12_fmt[mips_opts.micromips]) | |
df58fc94 RS |
8369 | #define JALR_FMT (jalr_fmt[mips_opts.micromips]) |
8370 | #define LUI_FMT (lui_fmt[mips_opts.micromips]) | |
8371 | #define MEM12_FMT (mem12_fmt[mips_opts.micromips]) | |
7361da2c AB |
8372 | #define LL_SC_FMT (ISA_IS_R6 (mips_opts.isa) ? "t,+j(b)" \ |
8373 | : mem12_fmt[mips_opts.micromips]) | |
833794fc | 8374 | #define MFHL_FMT (mfhl_fmt[mips_opts.micromips][mips_opts.insn32]) |
df58fc94 RS |
8375 | #define SHFT_FMT (shft_fmt[mips_opts.micromips]) |
8376 | #define TRAP_FMT (trap_fmt[mips_opts.micromips]) | |
8377 | ||
6e1304d8 RS |
8378 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
8379 | The first argument in *ARGS will be either the code for a single | |
8380 | relocation or -1 followed by the three codes that make up a | |
8381 | composite relocation. */ | |
8382 | ||
8383 | static void | |
8384 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
8385 | { | |
8386 | int i, next; | |
8387 | ||
8388 | next = va_arg (*args, int); | |
8389 | if (next >= 0) | |
8390 | r[0] = (bfd_reloc_code_real_type) next; | |
8391 | else | |
f2ae14a1 RS |
8392 | { |
8393 | for (i = 0; i < 3; i++) | |
8394 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
8395 | /* This function is only used for 16-bit relocation fields. | |
8396 | To make the macro code simpler, treat an unrelocated value | |
8397 | in the same way as BFD_RELOC_LO16. */ | |
8398 | if (r[0] == BFD_RELOC_UNUSED) | |
8399 | r[0] = BFD_RELOC_LO16; | |
8400 | } | |
6e1304d8 RS |
8401 | } |
8402 | ||
252b5132 RH |
8403 | /* Build an instruction created by a macro expansion. This is passed |
8404 | a pointer to the count of instructions created so far, an | |
8405 | expression, the name of the instruction to build, an operand format | |
8406 | string, and corresponding arguments. */ | |
8407 | ||
252b5132 | 8408 | static void |
67c0d1eb | 8409 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 8410 | { |
df58fc94 | 8411 | const struct mips_opcode *mo = NULL; |
f6688943 | 8412 | bfd_reloc_code_real_type r[3]; |
df58fc94 | 8413 | const struct mips_opcode *amo; |
e077a1c8 | 8414 | const struct mips_operand *operand; |
df58fc94 RS |
8415 | struct hash_control *hash; |
8416 | struct mips_cl_insn insn; | |
252b5132 | 8417 | va_list args; |
e077a1c8 | 8418 | unsigned int uval; |
252b5132 | 8419 | |
252b5132 | 8420 | va_start (args, fmt); |
252b5132 | 8421 | |
252b5132 RH |
8422 | if (mips_opts.mips16) |
8423 | { | |
03ea81db | 8424 | mips16_macro_build (ep, name, fmt, &args); |
252b5132 RH |
8425 | va_end (args); |
8426 | return; | |
8427 | } | |
8428 | ||
f6688943 TS |
8429 | r[0] = BFD_RELOC_UNUSED; |
8430 | r[1] = BFD_RELOC_UNUSED; | |
8431 | r[2] = BFD_RELOC_UNUSED; | |
df58fc94 RS |
8432 | hash = mips_opts.micromips ? micromips_op_hash : op_hash; |
8433 | amo = (struct mips_opcode *) hash_find (hash, name); | |
8434 | gas_assert (amo); | |
8435 | gas_assert (strcmp (name, amo->name) == 0); | |
1e915849 | 8436 | |
df58fc94 | 8437 | do |
8b082fb1 TS |
8438 | { |
8439 | /* Search until we get a match for NAME. It is assumed here that | |
df58fc94 RS |
8440 | macros will never generate MDMX, MIPS-3D, or MT instructions. |
8441 | We try to match an instruction that fulfils the branch delay | |
8442 | slot instruction length requirement (if any) of the previous | |
8443 | instruction. While doing this we record the first instruction | |
8444 | seen that matches all the other conditions and use it anyway | |
8445 | if the requirement cannot be met; we will issue an appropriate | |
8446 | warning later on. */ | |
8447 | if (strcmp (fmt, amo->args) == 0 | |
8448 | && amo->pinfo != INSN_MACRO | |
8449 | && is_opcode_valid (amo) | |
8450 | && is_size_valid (amo)) | |
8451 | { | |
8452 | if (is_delay_slot_valid (amo)) | |
8453 | { | |
8454 | mo = amo; | |
8455 | break; | |
8456 | } | |
8457 | else if (!mo) | |
8458 | mo = amo; | |
8459 | } | |
8b082fb1 | 8460 | |
df58fc94 RS |
8461 | ++amo; |
8462 | gas_assert (amo->name); | |
252b5132 | 8463 | } |
df58fc94 | 8464 | while (strcmp (name, amo->name) == 0); |
252b5132 | 8465 | |
df58fc94 | 8466 | gas_assert (mo); |
1e915849 | 8467 | create_insn (&insn, mo); |
e077a1c8 | 8468 | for (; *fmt; ++fmt) |
252b5132 | 8469 | { |
e077a1c8 | 8470 | switch (*fmt) |
252b5132 | 8471 | { |
252b5132 RH |
8472 | case ',': |
8473 | case '(': | |
8474 | case ')': | |
252b5132 | 8475 | case 'z': |
e077a1c8 | 8476 | break; |
252b5132 RH |
8477 | |
8478 | case 'i': | |
8479 | case 'j': | |
6e1304d8 | 8480 | macro_read_relocs (&args, r); |
9c2799c2 | 8481 | gas_assert (*r == BFD_RELOC_GPREL16 |
e391c024 RS |
8482 | || *r == BFD_RELOC_MIPS_HIGHER |
8483 | || *r == BFD_RELOC_HI16_S | |
8484 | || *r == BFD_RELOC_LO16 | |
8485 | || *r == BFD_RELOC_MIPS_GOT_OFST); | |
e077a1c8 | 8486 | break; |
e391c024 RS |
8487 | |
8488 | case 'o': | |
8489 | macro_read_relocs (&args, r); | |
e077a1c8 | 8490 | break; |
252b5132 RH |
8491 | |
8492 | case 'u': | |
6e1304d8 | 8493 | macro_read_relocs (&args, r); |
9c2799c2 | 8494 | gas_assert (ep != NULL |
90ecf173 MR |
8495 | && (ep->X_op == O_constant |
8496 | || (ep->X_op == O_symbol | |
8497 | && (*r == BFD_RELOC_MIPS_HIGHEST | |
8498 | || *r == BFD_RELOC_HI16_S | |
8499 | || *r == BFD_RELOC_HI16 | |
8500 | || *r == BFD_RELOC_GPREL16 | |
8501 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
8502 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); | |
e077a1c8 | 8503 | break; |
252b5132 RH |
8504 | |
8505 | case 'p': | |
9c2799c2 | 8506 | gas_assert (ep != NULL); |
bad36eac | 8507 | |
252b5132 RH |
8508 | /* |
8509 | * This allows macro() to pass an immediate expression for | |
8510 | * creating short branches without creating a symbol. | |
bad36eac DJ |
8511 | * |
8512 | * We don't allow branch relaxation for these branches, as | |
8513 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
8514 | */ |
8515 | if (ep->X_op == O_constant) | |
8516 | { | |
df58fc94 RS |
8517 | /* For microMIPS we always use relocations for branches. |
8518 | So we should not resolve immediate values. */ | |
8519 | gas_assert (!mips_opts.micromips); | |
8520 | ||
bad36eac DJ |
8521 | if ((ep->X_add_number & 3) != 0) |
8522 | as_bad (_("branch to misaligned address (0x%lx)"), | |
8523 | (unsigned long) ep->X_add_number); | |
8524 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
8525 | as_bad (_("branch address range overflow (0x%lx)"), | |
8526 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
8527 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
8528 | ep = NULL; | |
8529 | } | |
8530 | else | |
0b25d3e6 | 8531 | *r = BFD_RELOC_16_PCREL_S2; |
e077a1c8 | 8532 | break; |
252b5132 RH |
8533 | |
8534 | case 'a': | |
9c2799c2 | 8535 | gas_assert (ep != NULL); |
f6688943 | 8536 | *r = BFD_RELOC_MIPS_JMP; |
e077a1c8 | 8537 | break; |
d43b4baf | 8538 | |
252b5132 | 8539 | default: |
e077a1c8 RS |
8540 | operand = (mips_opts.micromips |
8541 | ? decode_micromips_operand (fmt) | |
8542 | : decode_mips_operand (fmt)); | |
8543 | if (!operand) | |
8544 | abort (); | |
8545 | ||
8546 | uval = va_arg (args, int); | |
8547 | if (operand->type == OP_CLO_CLZ_DEST) | |
8548 | uval |= (uval << 5); | |
8549 | insn_insert_operand (&insn, operand, uval); | |
8550 | ||
7361da2c | 8551 | if (*fmt == '+' || *fmt == 'm' || *fmt == '-') |
e077a1c8 RS |
8552 | ++fmt; |
8553 | break; | |
252b5132 | 8554 | } |
252b5132 RH |
8555 | } |
8556 | va_end (args); | |
9c2799c2 | 8557 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 8558 | |
df58fc94 | 8559 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
8560 | } |
8561 | ||
8562 | static void | |
67c0d1eb | 8563 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
03ea81db | 8564 | va_list *args) |
252b5132 | 8565 | { |
1e915849 | 8566 | struct mips_opcode *mo; |
252b5132 | 8567 | struct mips_cl_insn insn; |
e077a1c8 | 8568 | const struct mips_operand *operand; |
f6688943 TS |
8569 | bfd_reloc_code_real_type r[3] |
8570 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 8571 | |
1e915849 | 8572 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
9c2799c2 NC |
8573 | gas_assert (mo); |
8574 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 | 8575 | |
1e915849 | 8576 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 8577 | { |
1e915849 | 8578 | ++mo; |
9c2799c2 NC |
8579 | gas_assert (mo->name); |
8580 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
8581 | } |
8582 | ||
1e915849 | 8583 | create_insn (&insn, mo); |
e077a1c8 | 8584 | for (; *fmt; ++fmt) |
252b5132 RH |
8585 | { |
8586 | int c; | |
8587 | ||
e077a1c8 | 8588 | c = *fmt; |
252b5132 RH |
8589 | switch (c) |
8590 | { | |
252b5132 RH |
8591 | case ',': |
8592 | case '(': | |
8593 | case ')': | |
e077a1c8 | 8594 | break; |
252b5132 RH |
8595 | |
8596 | case '0': | |
8597 | case 'S': | |
8598 | case 'P': | |
8599 | case 'R': | |
e077a1c8 | 8600 | break; |
252b5132 RH |
8601 | |
8602 | case '<': | |
8603 | case '>': | |
8604 | case '4': | |
8605 | case '5': | |
8606 | case 'H': | |
8607 | case 'W': | |
8608 | case 'D': | |
8609 | case 'j': | |
8610 | case '8': | |
8611 | case 'V': | |
8612 | case 'C': | |
8613 | case 'U': | |
8614 | case 'k': | |
8615 | case 'K': | |
8616 | case 'p': | |
8617 | case 'q': | |
8618 | { | |
b886a2ab RS |
8619 | offsetT value; |
8620 | ||
9c2799c2 | 8621 | gas_assert (ep != NULL); |
252b5132 RH |
8622 | |
8623 | if (ep->X_op != O_constant) | |
874e8986 | 8624 | *r = (int) BFD_RELOC_UNUSED + c; |
b886a2ab | 8625 | else if (calculate_reloc (*r, ep->X_add_number, &value)) |
252b5132 | 8626 | { |
b886a2ab | 8627 | mips16_immed (NULL, 0, c, *r, value, 0, &insn.insn_opcode); |
252b5132 | 8628 | ep = NULL; |
f6688943 | 8629 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
8630 | } |
8631 | } | |
e077a1c8 | 8632 | break; |
252b5132 | 8633 | |
e077a1c8 RS |
8634 | default: |
8635 | operand = decode_mips16_operand (c, FALSE); | |
8636 | if (!operand) | |
8637 | abort (); | |
252b5132 | 8638 | |
4a06e5a2 | 8639 | insn_insert_operand (&insn, operand, va_arg (*args, int)); |
e077a1c8 RS |
8640 | break; |
8641 | } | |
252b5132 RH |
8642 | } |
8643 | ||
9c2799c2 | 8644 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 8645 | |
df58fc94 | 8646 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
8647 | } |
8648 | ||
438c16b8 TS |
8649 | /* |
8650 | * Generate a "jalr" instruction with a relocation hint to the called | |
8651 | * function. This occurs in NewABI PIC code. | |
8652 | */ | |
8653 | static void | |
df58fc94 | 8654 | macro_build_jalr (expressionS *ep, int cprestore) |
438c16b8 | 8655 | { |
df58fc94 RS |
8656 | static const bfd_reloc_code_real_type jalr_relocs[2] |
8657 | = { BFD_RELOC_MIPS_JALR, BFD_RELOC_MICROMIPS_JALR }; | |
8658 | bfd_reloc_code_real_type jalr_reloc = jalr_relocs[mips_opts.micromips]; | |
8659 | const char *jalr; | |
685736be | 8660 | char *f = NULL; |
b34976b6 | 8661 | |
1180b5a4 | 8662 | if (MIPS_JALR_HINT_P (ep)) |
f21f8242 | 8663 | { |
cc3d92a5 | 8664 | frag_grow (8); |
f21f8242 AO |
8665 | f = frag_more (0); |
8666 | } | |
2906b037 | 8667 | if (mips_opts.micromips) |
df58fc94 | 8668 | { |
833794fc MR |
8669 | jalr = ((mips_opts.noreorder && !cprestore) || mips_opts.insn32 |
8670 | ? "jalr" : "jalrs"); | |
e64af278 | 8671 | if (MIPS_JALR_HINT_P (ep) |
833794fc | 8672 | || mips_opts.insn32 |
e64af278 | 8673 | || (history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
df58fc94 RS |
8674 | macro_build (NULL, jalr, "t,s", RA, PIC_CALL_REG); |
8675 | else | |
8676 | macro_build (NULL, jalr, "mj", PIC_CALL_REG); | |
8677 | } | |
2906b037 MR |
8678 | else |
8679 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); | |
1180b5a4 | 8680 | if (MIPS_JALR_HINT_P (ep)) |
df58fc94 | 8681 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, ep, FALSE, jalr_reloc); |
438c16b8 TS |
8682 | } |
8683 | ||
252b5132 RH |
8684 | /* |
8685 | * Generate a "lui" instruction. | |
8686 | */ | |
8687 | static void | |
67c0d1eb | 8688 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 | 8689 | { |
9c2799c2 | 8690 | gas_assert (! mips_opts.mips16); |
252b5132 | 8691 | |
df58fc94 | 8692 | if (ep->X_op != O_constant) |
252b5132 | 8693 | { |
9c2799c2 | 8694 | gas_assert (ep->X_op == O_symbol); |
bbe506e8 TS |
8695 | /* _gp_disp is a special case, used from s_cpload. |
8696 | __gnu_local_gp is used if mips_no_shared. */ | |
9c2799c2 | 8697 | gas_assert (mips_pic == NO_PIC |
78e1bb40 | 8698 | || (! HAVE_NEWABI |
aa6975fb ILT |
8699 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
8700 | || (! mips_in_shared | |
bbe506e8 TS |
8701 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
8702 | "__gnu_local_gp") == 0)); | |
252b5132 RH |
8703 | } |
8704 | ||
df58fc94 | 8705 | macro_build (ep, "lui", LUI_FMT, regnum, BFD_RELOC_HI16_S); |
252b5132 RH |
8706 | } |
8707 | ||
885add95 CD |
8708 | /* Generate a sequence of instructions to do a load or store from a constant |
8709 | offset off of a base register (breg) into/from a target register (treg), | |
8710 | using AT if necessary. */ | |
8711 | static void | |
67c0d1eb RS |
8712 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
8713 | int treg, int breg, int dbl) | |
885add95 | 8714 | { |
9c2799c2 | 8715 | gas_assert (ep->X_op == O_constant); |
885add95 | 8716 | |
256ab948 | 8717 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
8718 | if (!dbl) |
8719 | normalize_constant_expr (ep); | |
256ab948 | 8720 | |
67c1ffbe | 8721 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 8722 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
8723 | as_warn (_("operand overflow")); |
8724 | ||
8725 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
8726 | { | |
8727 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 8728 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
8729 | } |
8730 | else | |
8731 | { | |
8732 | /* 32-bit offset, need multiple instructions and AT, like: | |
8733 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
8734 | addu $tempreg,$tempreg,$breg | |
8735 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
8736 | to handle the complete offset. */ | |
67c0d1eb RS |
8737 | macro_build_lui (ep, AT); |
8738 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
8739 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 | 8740 | |
741fe287 | 8741 | if (!mips_opts.at) |
1661c76c | 8742 | as_bad (_("macro used $at after \".set noat\"")); |
885add95 CD |
8743 | } |
8744 | } | |
8745 | ||
252b5132 RH |
8746 | /* set_at() |
8747 | * Generates code to set the $at register to true (one) | |
8748 | * if reg is less than the immediate expression. | |
8749 | */ | |
8750 | static void | |
67c0d1eb | 8751 | set_at (int reg, int unsignedp) |
252b5132 | 8752 | { |
b0e6f033 | 8753 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 | 8754 | && imm_expr.X_add_number < 0x8000) |
67c0d1eb RS |
8755 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
8756 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
8757 | else |
8758 | { | |
bad1aba3 | 8759 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
67c0d1eb | 8760 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); |
252b5132 RH |
8761 | } |
8762 | } | |
8763 | ||
252b5132 RH |
8764 | /* Count the leading zeroes by performing a binary chop. This is a |
8765 | bulky bit of source, but performance is a LOT better for the | |
8766 | majority of values than a simple loop to count the bits: | |
8767 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
8768 | if ((v) & (1 << (31 - lcnt))) | |
8769 | break; | |
8770 | However it is not code size friendly, and the gain will drop a bit | |
8771 | on certain cached systems. | |
8772 | */ | |
8773 | #define COUNT_TOP_ZEROES(v) \ | |
8774 | (((v) & ~0xffff) == 0 \ | |
8775 | ? ((v) & ~0xff) == 0 \ | |
8776 | ? ((v) & ~0xf) == 0 \ | |
8777 | ? ((v) & ~0x3) == 0 \ | |
8778 | ? ((v) & ~0x1) == 0 \ | |
8779 | ? !(v) \ | |
8780 | ? 32 \ | |
8781 | : 31 \ | |
8782 | : 30 \ | |
8783 | : ((v) & ~0x7) == 0 \ | |
8784 | ? 29 \ | |
8785 | : 28 \ | |
8786 | : ((v) & ~0x3f) == 0 \ | |
8787 | ? ((v) & ~0x1f) == 0 \ | |
8788 | ? 27 \ | |
8789 | : 26 \ | |
8790 | : ((v) & ~0x7f) == 0 \ | |
8791 | ? 25 \ | |
8792 | : 24 \ | |
8793 | : ((v) & ~0xfff) == 0 \ | |
8794 | ? ((v) & ~0x3ff) == 0 \ | |
8795 | ? ((v) & ~0x1ff) == 0 \ | |
8796 | ? 23 \ | |
8797 | : 22 \ | |
8798 | : ((v) & ~0x7ff) == 0 \ | |
8799 | ? 21 \ | |
8800 | : 20 \ | |
8801 | : ((v) & ~0x3fff) == 0 \ | |
8802 | ? ((v) & ~0x1fff) == 0 \ | |
8803 | ? 19 \ | |
8804 | : 18 \ | |
8805 | : ((v) & ~0x7fff) == 0 \ | |
8806 | ? 17 \ | |
8807 | : 16 \ | |
8808 | : ((v) & ~0xffffff) == 0 \ | |
8809 | ? ((v) & ~0xfffff) == 0 \ | |
8810 | ? ((v) & ~0x3ffff) == 0 \ | |
8811 | ? ((v) & ~0x1ffff) == 0 \ | |
8812 | ? 15 \ | |
8813 | : 14 \ | |
8814 | : ((v) & ~0x7ffff) == 0 \ | |
8815 | ? 13 \ | |
8816 | : 12 \ | |
8817 | : ((v) & ~0x3fffff) == 0 \ | |
8818 | ? ((v) & ~0x1fffff) == 0 \ | |
8819 | ? 11 \ | |
8820 | : 10 \ | |
8821 | : ((v) & ~0x7fffff) == 0 \ | |
8822 | ? 9 \ | |
8823 | : 8 \ | |
8824 | : ((v) & ~0xfffffff) == 0 \ | |
8825 | ? ((v) & ~0x3ffffff) == 0 \ | |
8826 | ? ((v) & ~0x1ffffff) == 0 \ | |
8827 | ? 7 \ | |
8828 | : 6 \ | |
8829 | : ((v) & ~0x7ffffff) == 0 \ | |
8830 | ? 5 \ | |
8831 | : 4 \ | |
8832 | : ((v) & ~0x3fffffff) == 0 \ | |
8833 | ? ((v) & ~0x1fffffff) == 0 \ | |
8834 | ? 3 \ | |
8835 | : 2 \ | |
8836 | : ((v) & ~0x7fffffff) == 0 \ | |
8837 | ? 1 \ | |
8838 | : 0) | |
8839 | ||
8840 | /* load_register() | |
67c1ffbe | 8841 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
8842 | * an absolute expression value into a register. |
8843 | */ | |
8844 | static void | |
67c0d1eb | 8845 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
8846 | { |
8847 | int freg; | |
8848 | expressionS hi32, lo32; | |
8849 | ||
8850 | if (ep->X_op != O_big) | |
8851 | { | |
9c2799c2 | 8852 | gas_assert (ep->X_op == O_constant); |
256ab948 TS |
8853 | |
8854 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
8855 | if (!dbl) |
8856 | normalize_constant_expr (ep); | |
256ab948 TS |
8857 | |
8858 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
8859 | { |
8860 | /* We can handle 16 bit signed values with an addiu to | |
8861 | $zero. No need to ever use daddiu here, since $zero and | |
8862 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 8863 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
8864 | return; |
8865 | } | |
8866 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
8867 | { | |
8868 | /* We can handle 16 bit unsigned values with an ori to | |
8869 | $zero. */ | |
67c0d1eb | 8870 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
8871 | return; |
8872 | } | |
256ab948 | 8873 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
8874 | { |
8875 | /* 32 bit values require an lui. */ | |
df58fc94 | 8876 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 8877 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 8878 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
8879 | return; |
8880 | } | |
8881 | } | |
8882 | ||
8883 | /* The value is larger than 32 bits. */ | |
8884 | ||
bad1aba3 | 8885 | if (!dbl || GPR_SIZE == 32) |
252b5132 | 8886 | { |
55e08f71 NC |
8887 | char value[32]; |
8888 | ||
8889 | sprintf_vma (value, ep->X_add_number); | |
1661c76c | 8890 | as_bad (_("number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 8891 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
8892 | return; |
8893 | } | |
8894 | ||
8895 | if (ep->X_op != O_big) | |
8896 | { | |
8897 | hi32 = *ep; | |
8898 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
8899 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
8900 | hi32.X_add_number &= 0xffffffff; | |
8901 | lo32 = *ep; | |
8902 | lo32.X_add_number &= 0xffffffff; | |
8903 | } | |
8904 | else | |
8905 | { | |
9c2799c2 | 8906 | gas_assert (ep->X_add_number > 2); |
252b5132 RH |
8907 | if (ep->X_add_number == 3) |
8908 | generic_bignum[3] = 0; | |
8909 | else if (ep->X_add_number > 4) | |
1661c76c | 8910 | as_bad (_("number larger than 64 bits")); |
252b5132 RH |
8911 | lo32.X_op = O_constant; |
8912 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
8913 | hi32.X_op = O_constant; | |
8914 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
8915 | } | |
8916 | ||
8917 | if (hi32.X_add_number == 0) | |
8918 | freg = 0; | |
8919 | else | |
8920 | { | |
8921 | int shift, bit; | |
8922 | unsigned long hi, lo; | |
8923 | ||
956cd1d6 | 8924 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
8925 | { |
8926 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
8927 | { | |
67c0d1eb | 8928 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
8929 | return; |
8930 | } | |
8931 | if (lo32.X_add_number & 0x80000000) | |
8932 | { | |
df58fc94 | 8933 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 8934 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 8935 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
8936 | return; |
8937 | } | |
8938 | } | |
252b5132 RH |
8939 | |
8940 | /* Check for 16bit shifted constant. We know that hi32 is | |
8941 | non-zero, so start the mask on the first bit of the hi32 | |
8942 | value. */ | |
8943 | shift = 17; | |
8944 | do | |
beae10d5 KH |
8945 | { |
8946 | unsigned long himask, lomask; | |
8947 | ||
8948 | if (shift < 32) | |
8949 | { | |
8950 | himask = 0xffff >> (32 - shift); | |
8951 | lomask = (0xffff << shift) & 0xffffffff; | |
8952 | } | |
8953 | else | |
8954 | { | |
8955 | himask = 0xffff << (shift - 32); | |
8956 | lomask = 0; | |
8957 | } | |
8958 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
8959 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
8960 | { | |
8961 | expressionS tmp; | |
8962 | ||
8963 | tmp.X_op = O_constant; | |
8964 | if (shift < 32) | |
8965 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
8966 | | (lo32.X_add_number >> shift)); | |
8967 | else | |
8968 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb | 8969 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
df58fc94 | 8970 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 8971 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
8972 | return; |
8973 | } | |
f9419b05 | 8974 | ++shift; |
beae10d5 KH |
8975 | } |
8976 | while (shift <= (64 - 16)); | |
252b5132 RH |
8977 | |
8978 | /* Find the bit number of the lowest one bit, and store the | |
8979 | shifted value in hi/lo. */ | |
8980 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
8981 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
8982 | if (lo != 0) | |
8983 | { | |
8984 | bit = 0; | |
8985 | while ((lo & 1) == 0) | |
8986 | { | |
8987 | lo >>= 1; | |
8988 | ++bit; | |
8989 | } | |
8990 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
8991 | hi >>= bit; | |
8992 | } | |
8993 | else | |
8994 | { | |
8995 | bit = 32; | |
8996 | while ((hi & 1) == 0) | |
8997 | { | |
8998 | hi >>= 1; | |
8999 | ++bit; | |
9000 | } | |
9001 | lo = hi; | |
9002 | hi = 0; | |
9003 | } | |
9004 | ||
9005 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
9006 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
9007 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
9008 | { |
9009 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 9010 | if (shift != 0) |
beae10d5 | 9011 | { |
252b5132 RH |
9012 | expressionS tmp; |
9013 | ||
9014 | /* This instruction will set the register to be all | |
9015 | ones. */ | |
beae10d5 KH |
9016 | tmp.X_op = O_constant; |
9017 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 9018 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
9019 | if (bit != 0) |
9020 | { | |
9021 | bit += shift; | |
df58fc94 | 9022 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 9023 | reg, reg, (bit >= 32) ? bit - 32 : bit); |
beae10d5 | 9024 | } |
df58fc94 | 9025 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", SHFT_FMT, |
67c0d1eb | 9026 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
9027 | return; |
9028 | } | |
9029 | } | |
252b5132 RH |
9030 | |
9031 | /* Sign extend hi32 before calling load_register, because we can | |
9032 | generally get better code when we load a sign extended value. */ | |
9033 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 9034 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 9035 | load_register (reg, &hi32, 0); |
252b5132 RH |
9036 | freg = reg; |
9037 | } | |
9038 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
9039 | { | |
9040 | if (freg != 0) | |
9041 | { | |
df58fc94 | 9042 | macro_build (NULL, "dsll32", SHFT_FMT, reg, freg, 0); |
252b5132 RH |
9043 | freg = reg; |
9044 | } | |
9045 | } | |
9046 | else | |
9047 | { | |
9048 | expressionS mid16; | |
9049 | ||
956cd1d6 | 9050 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 9051 | { |
df58fc94 RS |
9052 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
9053 | macro_build (NULL, "dsrl32", SHFT_FMT, reg, reg, 0); | |
beae10d5 KH |
9054 | return; |
9055 | } | |
252b5132 RH |
9056 | |
9057 | if (freg != 0) | |
9058 | { | |
df58fc94 | 9059 | macro_build (NULL, "dsll", SHFT_FMT, reg, freg, 16); |
252b5132 RH |
9060 | freg = reg; |
9061 | } | |
9062 | mid16 = lo32; | |
9063 | mid16.X_add_number >>= 16; | |
67c0d1eb | 9064 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
df58fc94 | 9065 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
252b5132 RH |
9066 | freg = reg; |
9067 | } | |
9068 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 9069 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
9070 | } |
9071 | ||
269137b2 TS |
9072 | static inline void |
9073 | load_delay_nop (void) | |
9074 | { | |
9075 | if (!gpr_interlocks) | |
9076 | macro_build (NULL, "nop", ""); | |
9077 | } | |
9078 | ||
252b5132 RH |
9079 | /* Load an address into a register. */ |
9080 | ||
9081 | static void | |
67c0d1eb | 9082 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 9083 | { |
252b5132 RH |
9084 | if (ep->X_op != O_constant |
9085 | && ep->X_op != O_symbol) | |
9086 | { | |
9087 | as_bad (_("expression too complex")); | |
9088 | ep->X_op = O_constant; | |
9089 | } | |
9090 | ||
9091 | if (ep->X_op == O_constant) | |
9092 | { | |
67c0d1eb | 9093 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
9094 | return; |
9095 | } | |
9096 | ||
9097 | if (mips_pic == NO_PIC) | |
9098 | { | |
9099 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 9100 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
9101 | Otherwise we want |
9102 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
9103 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 9104 | If we have an addend, we always use the latter form. |
76b3015f | 9105 | |
d6bc6245 TS |
9106 | With 64bit address space and a usable $at we want |
9107 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
9108 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
9109 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
9110 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
9111 | dsll32 $reg,0 | |
3a482fd5 | 9112 | daddu $reg,$reg,$at |
76b3015f | 9113 | |
c03099e6 | 9114 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
9115 | on superscalar processors. |
9116 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
9117 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
9118 | dsll $reg,16 | |
9119 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
9120 | dsll $reg,16 | |
9121 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
9122 | |
9123 | For GP relative symbols in 64bit address space we can use | |
9124 | the same sequence as in 32bit address space. */ | |
aed1a261 | 9125 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 9126 | { |
6caf9ef4 TS |
9127 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
9128 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
9129 | { | |
9130 | relax_start (ep->X_add_symbol); | |
9131 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
9132 | mips_gp_register, BFD_RELOC_GPREL16); | |
9133 | relax_switch (); | |
9134 | } | |
d6bc6245 | 9135 | |
741fe287 | 9136 | if (*used_at == 0 && mips_opts.at) |
d6bc6245 | 9137 | { |
df58fc94 RS |
9138 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
9139 | macro_build (ep, "lui", LUI_FMT, AT, BFD_RELOC_HI16_S); | |
67c0d1eb RS |
9140 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
9141 | BFD_RELOC_MIPS_HIGHER); | |
9142 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
df58fc94 | 9143 | macro_build (NULL, "dsll32", SHFT_FMT, reg, reg, 0); |
67c0d1eb | 9144 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); |
d6bc6245 TS |
9145 | *used_at = 1; |
9146 | } | |
9147 | else | |
9148 | { | |
df58fc94 | 9149 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb RS |
9150 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
9151 | BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 9152 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 9153 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); |
df58fc94 | 9154 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 9155 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); |
d6bc6245 | 9156 | } |
6caf9ef4 TS |
9157 | |
9158 | if (mips_relax.sequence) | |
9159 | relax_end (); | |
d6bc6245 | 9160 | } |
252b5132 RH |
9161 | else |
9162 | { | |
d6bc6245 | 9163 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 9164 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 9165 | { |
4d7206a2 | 9166 | relax_start (ep->X_add_symbol); |
67c0d1eb | 9167 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 9168 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 9169 | relax_switch (); |
d6bc6245 | 9170 | } |
67c0d1eb RS |
9171 | macro_build_lui (ep, reg); |
9172 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
9173 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
9174 | if (mips_relax.sequence) |
9175 | relax_end (); | |
d6bc6245 | 9176 | } |
252b5132 | 9177 | } |
0a44bf69 | 9178 | else if (!mips_big_got) |
252b5132 RH |
9179 | { |
9180 | expressionS ex; | |
9181 | ||
9182 | /* If this is a reference to an external symbol, we want | |
9183 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9184 | Otherwise we want | |
9185 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9186 | nop | |
9187 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
9188 | If there is a constant, it must be added in after. |
9189 | ||
ed6fb7bd | 9190 | If we have NewABI, we want |
f5040a92 AO |
9191 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
9192 | unless we're referencing a global symbol with a non-zero | |
9193 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
9194 | if (HAVE_NEWABI) |
9195 | { | |
f5040a92 AO |
9196 | if (ep->X_add_number) |
9197 | { | |
4d7206a2 | 9198 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 9199 | ep->X_add_number = 0; |
4d7206a2 | 9200 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
9201 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
9202 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
9203 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
9204 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
9205 | ex.X_op = O_constant; | |
67c0d1eb | 9206 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 9207 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 9208 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 9209 | relax_switch (); |
f5040a92 | 9210 | } |
67c0d1eb | 9211 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 9212 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
9213 | if (mips_relax.sequence) |
9214 | relax_end (); | |
ed6fb7bd SC |
9215 | } |
9216 | else | |
9217 | { | |
f5040a92 AO |
9218 | ex.X_add_number = ep->X_add_number; |
9219 | ep->X_add_number = 0; | |
67c0d1eb RS |
9220 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
9221 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 9222 | load_delay_nop (); |
4d7206a2 RS |
9223 | relax_start (ep->X_add_symbol); |
9224 | relax_switch (); | |
67c0d1eb | 9225 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 9226 | BFD_RELOC_LO16); |
4d7206a2 | 9227 | relax_end (); |
ed6fb7bd | 9228 | |
f5040a92 AO |
9229 | if (ex.X_add_number != 0) |
9230 | { | |
9231 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
9232 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
9233 | ex.X_op = O_constant; | |
67c0d1eb | 9234 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 9235 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 9236 | } |
252b5132 RH |
9237 | } |
9238 | } | |
0a44bf69 | 9239 | else if (mips_big_got) |
252b5132 RH |
9240 | { |
9241 | expressionS ex; | |
252b5132 RH |
9242 | |
9243 | /* This is the large GOT case. If this is a reference to an | |
9244 | external symbol, we want | |
9245 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
9246 | addu $reg,$reg,$gp | |
9247 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
9248 | |
9249 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
9250 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
9251 | nop | |
9252 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 9253 | If there is a constant, it must be added in after. |
f5040a92 AO |
9254 | |
9255 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
9256 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
9257 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 9258 | */ |
438c16b8 TS |
9259 | if (HAVE_NEWABI) |
9260 | { | |
4d7206a2 | 9261 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 9262 | ep->X_add_number = 0; |
4d7206a2 | 9263 | relax_start (ep->X_add_symbol); |
df58fc94 | 9264 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
9265 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
9266 | reg, reg, mips_gp_register); | |
9267 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
9268 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
9269 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
9270 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
9271 | else if (ex.X_add_number) | |
9272 | { | |
9273 | ex.X_op = O_constant; | |
67c0d1eb RS |
9274 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
9275 | BFD_RELOC_LO16); | |
f5040a92 AO |
9276 | } |
9277 | ||
9278 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 9279 | relax_switch (); |
67c0d1eb | 9280 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 9281 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
9282 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
9283 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 9284 | relax_end (); |
438c16b8 | 9285 | } |
252b5132 | 9286 | else |
438c16b8 | 9287 | { |
f5040a92 AO |
9288 | ex.X_add_number = ep->X_add_number; |
9289 | ep->X_add_number = 0; | |
4d7206a2 | 9290 | relax_start (ep->X_add_symbol); |
df58fc94 | 9291 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
9292 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
9293 | reg, reg, mips_gp_register); | |
9294 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
9295 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
9296 | relax_switch (); |
9297 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
9298 | { |
9299 | /* We need a nop before loading from $gp. This special | |
9300 | check is required because the lui which starts the main | |
9301 | instruction stream does not refer to $gp, and so will not | |
9302 | insert the nop which may be required. */ | |
67c0d1eb | 9303 | macro_build (NULL, "nop", ""); |
438c16b8 | 9304 | } |
67c0d1eb | 9305 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 9306 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 9307 | load_delay_nop (); |
67c0d1eb | 9308 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 9309 | BFD_RELOC_LO16); |
4d7206a2 | 9310 | relax_end (); |
438c16b8 | 9311 | |
f5040a92 AO |
9312 | if (ex.X_add_number != 0) |
9313 | { | |
9314 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
9315 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
9316 | ex.X_op = O_constant; | |
67c0d1eb RS |
9317 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
9318 | BFD_RELOC_LO16); | |
f5040a92 | 9319 | } |
252b5132 RH |
9320 | } |
9321 | } | |
252b5132 RH |
9322 | else |
9323 | abort (); | |
8fc2e39e | 9324 | |
741fe287 | 9325 | if (!mips_opts.at && *used_at == 1) |
1661c76c | 9326 | as_bad (_("macro used $at after \".set noat\"")); |
252b5132 RH |
9327 | } |
9328 | ||
ea1fb5dc RS |
9329 | /* Move the contents of register SOURCE into register DEST. */ |
9330 | ||
9331 | static void | |
67c0d1eb | 9332 | move_register (int dest, int source) |
ea1fb5dc | 9333 | { |
df58fc94 RS |
9334 | /* Prefer to use a 16-bit microMIPS instruction unless the previous |
9335 | instruction specifically requires a 32-bit one. */ | |
9336 | if (mips_opts.micromips | |
833794fc | 9337 | && !mips_opts.insn32 |
df58fc94 | 9338 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
7951ca42 | 9339 | macro_build (NULL, "move", "mp,mj", dest, source); |
df58fc94 | 9340 | else |
40fc1451 | 9341 | macro_build (NULL, "or", "d,v,t", dest, source, 0); |
ea1fb5dc RS |
9342 | } |
9343 | ||
4d7206a2 | 9344 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
9345 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
9346 | The two alternatives are: | |
4d7206a2 RS |
9347 | |
9348 | Global symbol Local sybmol | |
9349 | ------------- ------------ | |
9350 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
9351 | ... ... | |
9352 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
9353 | ||
9354 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
9355 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
9356 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
9357 | |
9358 | static void | |
67c0d1eb | 9359 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
9360 | { |
9361 | expressionS global; | |
9362 | ||
9363 | global = *local; | |
9364 | global.X_add_number = 0; | |
9365 | ||
9366 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
9367 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
9368 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 9369 | relax_switch (); |
67c0d1eb RS |
9370 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
9371 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
9372 | relax_end (); |
9373 | } | |
9374 | ||
9375 | static void | |
67c0d1eb | 9376 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
9377 | { |
9378 | expressionS global; | |
9379 | ||
9380 | global.X_op = O_constant; | |
9381 | global.X_op_symbol = NULL; | |
9382 | global.X_add_symbol = NULL; | |
9383 | global.X_add_number = local->X_add_number; | |
9384 | ||
9385 | relax_start (local->X_add_symbol); | |
67c0d1eb | 9386 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
9387 | dest, dest, BFD_RELOC_LO16); |
9388 | relax_switch (); | |
67c0d1eb | 9389 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
9390 | relax_end (); |
9391 | } | |
9392 | ||
f6a22291 MR |
9393 | static void |
9394 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
9395 | { | |
9396 | expressionS global; | |
9397 | int hold_mips_optimize; | |
9398 | ||
9399 | global.X_op = O_constant; | |
9400 | global.X_op_symbol = NULL; | |
9401 | global.X_add_symbol = NULL; | |
9402 | global.X_add_number = local->X_add_number; | |
9403 | ||
9404 | relax_start (local->X_add_symbol); | |
9405 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
9406 | relax_switch (); | |
9407 | /* Set mips_optimize around the lui instruction to avoid | |
9408 | inserting an unnecessary nop after the lw. */ | |
9409 | hold_mips_optimize = mips_optimize; | |
9410 | mips_optimize = 2; | |
9411 | macro_build_lui (&global, tmp); | |
9412 | mips_optimize = hold_mips_optimize; | |
9413 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
9414 | relax_end (); | |
9415 | ||
9416 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
9417 | } | |
9418 | ||
df58fc94 RS |
9419 | /* Emit a sequence of instructions to emulate a branch likely operation. |
9420 | BR is an ordinary branch corresponding to one to be emulated. BRNEG | |
9421 | is its complementing branch with the original condition negated. | |
9422 | CALL is set if the original branch specified the link operation. | |
9423 | EP, FMT, SREG and TREG specify the usual macro_build() parameters. | |
9424 | ||
9425 | Code like this is produced in the noreorder mode: | |
9426 | ||
9427 | BRNEG <args>, 1f | |
9428 | nop | |
9429 | b <sym> | |
9430 | delay slot (executed only if branch taken) | |
9431 | 1: | |
9432 | ||
9433 | or, if CALL is set: | |
9434 | ||
9435 | BRNEG <args>, 1f | |
9436 | nop | |
9437 | bal <sym> | |
9438 | delay slot (executed only if branch taken) | |
9439 | 1: | |
9440 | ||
9441 | In the reorder mode the delay slot would be filled with a nop anyway, | |
9442 | so code produced is simply: | |
9443 | ||
9444 | BR <args>, <sym> | |
9445 | nop | |
9446 | ||
9447 | This function is used when producing code for the microMIPS ASE that | |
9448 | does not implement branch likely instructions in hardware. */ | |
9449 | ||
9450 | static void | |
9451 | macro_build_branch_likely (const char *br, const char *brneg, | |
9452 | int call, expressionS *ep, const char *fmt, | |
9453 | unsigned int sreg, unsigned int treg) | |
9454 | { | |
9455 | int noreorder = mips_opts.noreorder; | |
9456 | expressionS expr1; | |
9457 | ||
9458 | gas_assert (mips_opts.micromips); | |
9459 | start_noreorder (); | |
9460 | if (noreorder) | |
9461 | { | |
9462 | micromips_label_expr (&expr1); | |
9463 | macro_build (&expr1, brneg, fmt, sreg, treg); | |
9464 | macro_build (NULL, "nop", ""); | |
9465 | macro_build (ep, call ? "bal" : "b", "p"); | |
9466 | ||
9467 | /* Set to true so that append_insn adds a label. */ | |
9468 | emit_branch_likely_macro = TRUE; | |
9469 | } | |
9470 | else | |
9471 | { | |
9472 | macro_build (ep, br, fmt, sreg, treg); | |
9473 | macro_build (NULL, "nop", ""); | |
9474 | } | |
9475 | end_noreorder (); | |
9476 | } | |
9477 | ||
9478 | /* Emit a coprocessor branch-likely macro specified by TYPE, using CC as | |
9479 | the condition code tested. EP specifies the branch target. */ | |
9480 | ||
9481 | static void | |
9482 | macro_build_branch_ccl (int type, expressionS *ep, unsigned int cc) | |
9483 | { | |
9484 | const int call = 0; | |
9485 | const char *brneg; | |
9486 | const char *br; | |
9487 | ||
9488 | switch (type) | |
9489 | { | |
9490 | case M_BC1FL: | |
9491 | br = "bc1f"; | |
9492 | brneg = "bc1t"; | |
9493 | break; | |
9494 | case M_BC1TL: | |
9495 | br = "bc1t"; | |
9496 | brneg = "bc1f"; | |
9497 | break; | |
9498 | case M_BC2FL: | |
9499 | br = "bc2f"; | |
9500 | brneg = "bc2t"; | |
9501 | break; | |
9502 | case M_BC2TL: | |
9503 | br = "bc2t"; | |
9504 | brneg = "bc2f"; | |
9505 | break; | |
9506 | default: | |
9507 | abort (); | |
9508 | } | |
9509 | macro_build_branch_likely (br, brneg, call, ep, "N,p", cc, ZERO); | |
9510 | } | |
9511 | ||
9512 | /* Emit a two-argument branch macro specified by TYPE, using SREG as | |
9513 | the register tested. EP specifies the branch target. */ | |
9514 | ||
9515 | static void | |
9516 | macro_build_branch_rs (int type, expressionS *ep, unsigned int sreg) | |
9517 | { | |
9518 | const char *brneg = NULL; | |
9519 | const char *br; | |
9520 | int call = 0; | |
9521 | ||
9522 | switch (type) | |
9523 | { | |
9524 | case M_BGEZ: | |
9525 | br = "bgez"; | |
9526 | break; | |
9527 | case M_BGEZL: | |
9528 | br = mips_opts.micromips ? "bgez" : "bgezl"; | |
9529 | brneg = "bltz"; | |
9530 | break; | |
9531 | case M_BGEZALL: | |
9532 | gas_assert (mips_opts.micromips); | |
833794fc | 9533 | br = mips_opts.insn32 ? "bgezal" : "bgezals"; |
df58fc94 RS |
9534 | brneg = "bltz"; |
9535 | call = 1; | |
9536 | break; | |
9537 | case M_BGTZ: | |
9538 | br = "bgtz"; | |
9539 | break; | |
9540 | case M_BGTZL: | |
9541 | br = mips_opts.micromips ? "bgtz" : "bgtzl"; | |
9542 | brneg = "blez"; | |
9543 | break; | |
9544 | case M_BLEZ: | |
9545 | br = "blez"; | |
9546 | break; | |
9547 | case M_BLEZL: | |
9548 | br = mips_opts.micromips ? "blez" : "blezl"; | |
9549 | brneg = "bgtz"; | |
9550 | break; | |
9551 | case M_BLTZ: | |
9552 | br = "bltz"; | |
9553 | break; | |
9554 | case M_BLTZL: | |
9555 | br = mips_opts.micromips ? "bltz" : "bltzl"; | |
9556 | brneg = "bgez"; | |
9557 | break; | |
9558 | case M_BLTZALL: | |
9559 | gas_assert (mips_opts.micromips); | |
833794fc | 9560 | br = mips_opts.insn32 ? "bltzal" : "bltzals"; |
df58fc94 RS |
9561 | brneg = "bgez"; |
9562 | call = 1; | |
9563 | break; | |
9564 | default: | |
9565 | abort (); | |
9566 | } | |
9567 | if (mips_opts.micromips && brneg) | |
9568 | macro_build_branch_likely (br, brneg, call, ep, "s,p", sreg, ZERO); | |
9569 | else | |
9570 | macro_build (ep, br, "s,p", sreg); | |
9571 | } | |
9572 | ||
9573 | /* Emit a three-argument branch macro specified by TYPE, using SREG and | |
9574 | TREG as the registers tested. EP specifies the branch target. */ | |
9575 | ||
9576 | static void | |
9577 | macro_build_branch_rsrt (int type, expressionS *ep, | |
9578 | unsigned int sreg, unsigned int treg) | |
9579 | { | |
9580 | const char *brneg = NULL; | |
9581 | const int call = 0; | |
9582 | const char *br; | |
9583 | ||
9584 | switch (type) | |
9585 | { | |
9586 | case M_BEQ: | |
9587 | case M_BEQ_I: | |
9588 | br = "beq"; | |
9589 | break; | |
9590 | case M_BEQL: | |
9591 | case M_BEQL_I: | |
9592 | br = mips_opts.micromips ? "beq" : "beql"; | |
9593 | brneg = "bne"; | |
9594 | break; | |
9595 | case M_BNE: | |
9596 | case M_BNE_I: | |
9597 | br = "bne"; | |
9598 | break; | |
9599 | case M_BNEL: | |
9600 | case M_BNEL_I: | |
9601 | br = mips_opts.micromips ? "bne" : "bnel"; | |
9602 | brneg = "beq"; | |
9603 | break; | |
9604 | default: | |
9605 | abort (); | |
9606 | } | |
9607 | if (mips_opts.micromips && brneg) | |
9608 | macro_build_branch_likely (br, brneg, call, ep, "s,t,p", sreg, treg); | |
9609 | else | |
9610 | macro_build (ep, br, "s,t,p", sreg, treg); | |
9611 | } | |
9612 | ||
f2ae14a1 RS |
9613 | /* Return the high part that should be loaded in order to make the low |
9614 | part of VALUE accessible using an offset of OFFBITS bits. */ | |
9615 | ||
9616 | static offsetT | |
9617 | offset_high_part (offsetT value, unsigned int offbits) | |
9618 | { | |
9619 | offsetT bias; | |
9620 | addressT low_mask; | |
9621 | ||
9622 | if (offbits == 0) | |
9623 | return value; | |
9624 | bias = 1 << (offbits - 1); | |
9625 | low_mask = bias * 2 - 1; | |
9626 | return (value + bias) & ~low_mask; | |
9627 | } | |
9628 | ||
9629 | /* Return true if the value stored in offset_expr and offset_reloc | |
9630 | fits into a signed offset of OFFBITS bits. RANGE is the maximum | |
9631 | amount that the caller wants to add without inducing overflow | |
9632 | and ALIGN is the known alignment of the value in bytes. */ | |
9633 | ||
9634 | static bfd_boolean | |
9635 | small_offset_p (unsigned int range, unsigned int align, unsigned int offbits) | |
9636 | { | |
9637 | if (offbits == 16) | |
9638 | { | |
9639 | /* Accept any relocation operator if overflow isn't a concern. */ | |
9640 | if (range < align && *offset_reloc != BFD_RELOC_UNUSED) | |
9641 | return TRUE; | |
9642 | ||
9643 | /* These relocations are guaranteed not to overflow in correct links. */ | |
9644 | if (*offset_reloc == BFD_RELOC_MIPS_LITERAL | |
9645 | || gprel16_reloc_p (*offset_reloc)) | |
9646 | return TRUE; | |
9647 | } | |
9648 | if (offset_expr.X_op == O_constant | |
9649 | && offset_high_part (offset_expr.X_add_number, offbits) == 0 | |
9650 | && offset_high_part (offset_expr.X_add_number + range, offbits) == 0) | |
9651 | return TRUE; | |
9652 | return FALSE; | |
9653 | } | |
9654 | ||
252b5132 RH |
9655 | /* |
9656 | * Build macros | |
9657 | * This routine implements the seemingly endless macro or synthesized | |
9658 | * instructions and addressing modes in the mips assembly language. Many | |
9659 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 9660 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
9661 | * this verbose method. Others are not simple macros but are more like |
9662 | * optimizing code generation. | |
9663 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 9664 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
9665 | * The ensuing load upper instructions are ommited. This implies some kind |
9666 | * of global optimization. We currently only optimize within a single macro. | |
9667 | * For many of the load and store macros if the address is specified as a | |
9668 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
9669 | * first load register 'at' with zero and use it as the base register. The | |
9670 | * mips assembler simply uses register $zero. Just one tiny optimization | |
9671 | * we're missing. | |
9672 | */ | |
9673 | static void | |
833794fc | 9674 | macro (struct mips_cl_insn *ip, char *str) |
252b5132 | 9675 | { |
c0ebe874 RS |
9676 | const struct mips_operand_array *operands; |
9677 | unsigned int breg, i; | |
741fe287 | 9678 | unsigned int tempreg; |
252b5132 | 9679 | int mask; |
43841e91 | 9680 | int used_at = 0; |
df58fc94 | 9681 | expressionS label_expr; |
252b5132 | 9682 | expressionS expr1; |
df58fc94 | 9683 | expressionS *ep; |
252b5132 RH |
9684 | const char *s; |
9685 | const char *s2; | |
9686 | const char *fmt; | |
9687 | int likely = 0; | |
252b5132 | 9688 | int coproc = 0; |
7f3c4072 | 9689 | int offbits = 16; |
1abe91b1 | 9690 | int call = 0; |
df58fc94 RS |
9691 | int jals = 0; |
9692 | int dbl = 0; | |
9693 | int imm = 0; | |
9694 | int ust = 0; | |
9695 | int lp = 0; | |
f2ae14a1 | 9696 | bfd_boolean large_offset; |
252b5132 | 9697 | int off; |
252b5132 | 9698 | int hold_mips_optimize; |
f2ae14a1 | 9699 | unsigned int align; |
c0ebe874 | 9700 | unsigned int op[MAX_OPERANDS]; |
252b5132 | 9701 | |
9c2799c2 | 9702 | gas_assert (! mips_opts.mips16); |
252b5132 | 9703 | |
c0ebe874 RS |
9704 | operands = insn_operands (ip); |
9705 | for (i = 0; i < MAX_OPERANDS; i++) | |
9706 | if (operands->operand[i]) | |
9707 | op[i] = insn_extract_operand (ip, operands->operand[i]); | |
9708 | else | |
9709 | op[i] = -1; | |
9710 | ||
252b5132 RH |
9711 | mask = ip->insn_mo->mask; |
9712 | ||
df58fc94 RS |
9713 | label_expr.X_op = O_constant; |
9714 | label_expr.X_op_symbol = NULL; | |
9715 | label_expr.X_add_symbol = NULL; | |
9716 | label_expr.X_add_number = 0; | |
9717 | ||
252b5132 RH |
9718 | expr1.X_op = O_constant; |
9719 | expr1.X_op_symbol = NULL; | |
9720 | expr1.X_add_symbol = NULL; | |
9721 | expr1.X_add_number = 1; | |
f2ae14a1 | 9722 | align = 1; |
252b5132 RH |
9723 | |
9724 | switch (mask) | |
9725 | { | |
9726 | case M_DABS: | |
9727 | dbl = 1; | |
9728 | case M_ABS: | |
df58fc94 RS |
9729 | /* bgez $a0,1f |
9730 | move v0,$a0 | |
9731 | sub v0,$zero,$a0 | |
9732 | 1: | |
9733 | */ | |
252b5132 | 9734 | |
7d10b47d | 9735 | start_noreorder (); |
252b5132 | 9736 | |
df58fc94 RS |
9737 | if (mips_opts.micromips) |
9738 | micromips_label_expr (&label_expr); | |
9739 | else | |
9740 | label_expr.X_add_number = 8; | |
c0ebe874 RS |
9741 | macro_build (&label_expr, "bgez", "s,p", op[1]); |
9742 | if (op[0] == op[1]) | |
a605d2b3 | 9743 | macro_build (NULL, "nop", ""); |
252b5132 | 9744 | else |
c0ebe874 RS |
9745 | move_register (op[0], op[1]); |
9746 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", op[0], 0, op[1]); | |
df58fc94 RS |
9747 | if (mips_opts.micromips) |
9748 | micromips_add_label (); | |
252b5132 | 9749 | |
7d10b47d | 9750 | end_noreorder (); |
8fc2e39e | 9751 | break; |
252b5132 RH |
9752 | |
9753 | case M_ADD_I: | |
9754 | s = "addi"; | |
9755 | s2 = "add"; | |
9756 | goto do_addi; | |
9757 | case M_ADDU_I: | |
9758 | s = "addiu"; | |
9759 | s2 = "addu"; | |
9760 | goto do_addi; | |
9761 | case M_DADD_I: | |
9762 | dbl = 1; | |
9763 | s = "daddi"; | |
9764 | s2 = "dadd"; | |
df58fc94 RS |
9765 | if (!mips_opts.micromips) |
9766 | goto do_addi; | |
b0e6f033 | 9767 | if (imm_expr.X_add_number >= -0x200 |
df58fc94 RS |
9768 | && imm_expr.X_add_number < 0x200) |
9769 | { | |
b0e6f033 RS |
9770 | macro_build (NULL, s, "t,r,.", op[0], op[1], |
9771 | (int) imm_expr.X_add_number); | |
df58fc94 RS |
9772 | break; |
9773 | } | |
9774 | goto do_addi_i; | |
252b5132 RH |
9775 | case M_DADDU_I: |
9776 | dbl = 1; | |
9777 | s = "daddiu"; | |
9778 | s2 = "daddu"; | |
9779 | do_addi: | |
b0e6f033 | 9780 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 RH |
9781 | && imm_expr.X_add_number < 0x8000) |
9782 | { | |
c0ebe874 | 9783 | macro_build (&imm_expr, s, "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
8fc2e39e | 9784 | break; |
252b5132 | 9785 | } |
df58fc94 | 9786 | do_addi_i: |
8fc2e39e | 9787 | used_at = 1; |
67c0d1eb | 9788 | load_register (AT, &imm_expr, dbl); |
c0ebe874 | 9789 | macro_build (NULL, s2, "d,v,t", op[0], op[1], AT); |
252b5132 RH |
9790 | break; |
9791 | ||
9792 | case M_AND_I: | |
9793 | s = "andi"; | |
9794 | s2 = "and"; | |
9795 | goto do_bit; | |
9796 | case M_OR_I: | |
9797 | s = "ori"; | |
9798 | s2 = "or"; | |
9799 | goto do_bit; | |
9800 | case M_NOR_I: | |
9801 | s = ""; | |
9802 | s2 = "nor"; | |
9803 | goto do_bit; | |
9804 | case M_XOR_I: | |
9805 | s = "xori"; | |
9806 | s2 = "xor"; | |
9807 | do_bit: | |
b0e6f033 | 9808 | if (imm_expr.X_add_number >= 0 |
252b5132 RH |
9809 | && imm_expr.X_add_number < 0x10000) |
9810 | { | |
9811 | if (mask != M_NOR_I) | |
c0ebe874 | 9812 | macro_build (&imm_expr, s, "t,r,i", op[0], op[1], BFD_RELOC_LO16); |
252b5132 RH |
9813 | else |
9814 | { | |
67c0d1eb | 9815 | macro_build (&imm_expr, "ori", "t,r,i", |
c0ebe874 RS |
9816 | op[0], op[1], BFD_RELOC_LO16); |
9817 | macro_build (NULL, "nor", "d,v,t", op[0], op[0], 0); | |
252b5132 | 9818 | } |
8fc2e39e | 9819 | break; |
252b5132 RH |
9820 | } |
9821 | ||
8fc2e39e | 9822 | used_at = 1; |
bad1aba3 | 9823 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 9824 | macro_build (NULL, s2, "d,v,t", op[0], op[1], AT); |
252b5132 RH |
9825 | break; |
9826 | ||
8b082fb1 TS |
9827 | case M_BALIGN: |
9828 | switch (imm_expr.X_add_number) | |
9829 | { | |
9830 | case 0: | |
9831 | macro_build (NULL, "nop", ""); | |
9832 | break; | |
9833 | case 2: | |
c0ebe874 | 9834 | macro_build (NULL, "packrl.ph", "d,s,t", op[0], op[0], op[1]); |
8b082fb1 | 9835 | break; |
03f66e8a MR |
9836 | case 1: |
9837 | case 3: | |
c0ebe874 | 9838 | macro_build (NULL, "balign", "t,s,2", op[0], op[1], |
90ecf173 | 9839 | (int) imm_expr.X_add_number); |
8b082fb1 | 9840 | break; |
03f66e8a MR |
9841 | default: |
9842 | as_bad (_("BALIGN immediate not 0, 1, 2 or 3 (%lu)"), | |
9843 | (unsigned long) imm_expr.X_add_number); | |
9844 | break; | |
8b082fb1 TS |
9845 | } |
9846 | break; | |
9847 | ||
df58fc94 RS |
9848 | case M_BC1FL: |
9849 | case M_BC1TL: | |
9850 | case M_BC2FL: | |
9851 | case M_BC2TL: | |
9852 | gas_assert (mips_opts.micromips); | |
9853 | macro_build_branch_ccl (mask, &offset_expr, | |
9854 | EXTRACT_OPERAND (1, BCC, *ip)); | |
9855 | break; | |
9856 | ||
252b5132 | 9857 | case M_BEQ_I: |
252b5132 | 9858 | case M_BEQL_I: |
252b5132 | 9859 | case M_BNE_I: |
252b5132 | 9860 | case M_BNEL_I: |
b0e6f033 | 9861 | if (imm_expr.X_add_number == 0) |
c0ebe874 | 9862 | op[1] = 0; |
df58fc94 | 9863 | else |
252b5132 | 9864 | { |
c0ebe874 | 9865 | op[1] = AT; |
df58fc94 | 9866 | used_at = 1; |
bad1aba3 | 9867 | load_register (op[1], &imm_expr, GPR_SIZE == 64); |
252b5132 | 9868 | } |
df58fc94 RS |
9869 | /* Fall through. */ |
9870 | case M_BEQL: | |
9871 | case M_BNEL: | |
c0ebe874 | 9872 | macro_build_branch_rsrt (mask, &offset_expr, op[0], op[1]); |
252b5132 RH |
9873 | break; |
9874 | ||
9875 | case M_BGEL: | |
9876 | likely = 1; | |
9877 | case M_BGE: | |
c0ebe874 RS |
9878 | if (op[1] == 0) |
9879 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, op[0]); | |
9880 | else if (op[0] == 0) | |
9881 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, op[1]); | |
df58fc94 | 9882 | else |
252b5132 | 9883 | { |
df58fc94 | 9884 | used_at = 1; |
c0ebe874 | 9885 | macro_build (NULL, "slt", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
9886 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9887 | &offset_expr, AT, ZERO); | |
252b5132 | 9888 | } |
df58fc94 RS |
9889 | break; |
9890 | ||
9891 | case M_BGEZL: | |
9892 | case M_BGEZALL: | |
9893 | case M_BGTZL: | |
9894 | case M_BLEZL: | |
9895 | case M_BLTZL: | |
9896 | case M_BLTZALL: | |
c0ebe874 | 9897 | macro_build_branch_rs (mask, &offset_expr, op[0]); |
252b5132 RH |
9898 | break; |
9899 | ||
9900 | case M_BGTL_I: | |
9901 | likely = 1; | |
9902 | case M_BGT_I: | |
90ecf173 | 9903 | /* Check for > max integer. */ |
b0e6f033 | 9904 | if (imm_expr.X_add_number >= GPR_SMAX) |
252b5132 RH |
9905 | { |
9906 | do_false: | |
90ecf173 | 9907 | /* Result is always false. */ |
252b5132 | 9908 | if (! likely) |
a605d2b3 | 9909 | macro_build (NULL, "nop", ""); |
252b5132 | 9910 | else |
df58fc94 | 9911 | macro_build_branch_rsrt (M_BNEL, &offset_expr, ZERO, ZERO); |
8fc2e39e | 9912 | break; |
252b5132 | 9913 | } |
f9419b05 | 9914 | ++imm_expr.X_add_number; |
252b5132 RH |
9915 | /* FALLTHROUGH */ |
9916 | case M_BGE_I: | |
9917 | case M_BGEL_I: | |
9918 | if (mask == M_BGEL_I) | |
9919 | likely = 1; | |
b0e6f033 | 9920 | if (imm_expr.X_add_number == 0) |
252b5132 | 9921 | { |
df58fc94 | 9922 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, |
c0ebe874 | 9923 | &offset_expr, op[0]); |
8fc2e39e | 9924 | break; |
252b5132 | 9925 | } |
b0e6f033 | 9926 | if (imm_expr.X_add_number == 1) |
252b5132 | 9927 | { |
df58fc94 | 9928 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, |
c0ebe874 | 9929 | &offset_expr, op[0]); |
8fc2e39e | 9930 | break; |
252b5132 | 9931 | } |
b0e6f033 | 9932 | if (imm_expr.X_add_number <= GPR_SMIN) |
252b5132 RH |
9933 | { |
9934 | do_true: | |
9935 | /* result is always true */ | |
1661c76c | 9936 | as_warn (_("branch %s is always true"), ip->insn_mo->name); |
67c0d1eb | 9937 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 9938 | break; |
252b5132 | 9939 | } |
8fc2e39e | 9940 | used_at = 1; |
c0ebe874 | 9941 | set_at (op[0], 0); |
df58fc94 RS |
9942 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9943 | &offset_expr, AT, ZERO); | |
252b5132 RH |
9944 | break; |
9945 | ||
9946 | case M_BGEUL: | |
9947 | likely = 1; | |
9948 | case M_BGEU: | |
c0ebe874 | 9949 | if (op[1] == 0) |
252b5132 | 9950 | goto do_true; |
c0ebe874 | 9951 | else if (op[0] == 0) |
df58fc94 | 9952 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
c0ebe874 | 9953 | &offset_expr, ZERO, op[1]); |
df58fc94 | 9954 | else |
252b5132 | 9955 | { |
df58fc94 | 9956 | used_at = 1; |
c0ebe874 | 9957 | macro_build (NULL, "sltu", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
9958 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9959 | &offset_expr, AT, ZERO); | |
252b5132 | 9960 | } |
252b5132 RH |
9961 | break; |
9962 | ||
9963 | case M_BGTUL_I: | |
9964 | likely = 1; | |
9965 | case M_BGTU_I: | |
c0ebe874 | 9966 | if (op[0] == 0 |
bad1aba3 | 9967 | || (GPR_SIZE == 32 |
f01dc953 | 9968 | && imm_expr.X_add_number == -1)) |
252b5132 | 9969 | goto do_false; |
f9419b05 | 9970 | ++imm_expr.X_add_number; |
252b5132 RH |
9971 | /* FALLTHROUGH */ |
9972 | case M_BGEU_I: | |
9973 | case M_BGEUL_I: | |
9974 | if (mask == M_BGEUL_I) | |
9975 | likely = 1; | |
b0e6f033 | 9976 | if (imm_expr.X_add_number == 0) |
252b5132 | 9977 | goto do_true; |
b0e6f033 | 9978 | else if (imm_expr.X_add_number == 1) |
df58fc94 | 9979 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
c0ebe874 | 9980 | &offset_expr, op[0], ZERO); |
df58fc94 | 9981 | else |
252b5132 | 9982 | { |
df58fc94 | 9983 | used_at = 1; |
c0ebe874 | 9984 | set_at (op[0], 1); |
df58fc94 RS |
9985 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9986 | &offset_expr, AT, ZERO); | |
252b5132 | 9987 | } |
252b5132 RH |
9988 | break; |
9989 | ||
9990 | case M_BGTL: | |
9991 | likely = 1; | |
9992 | case M_BGT: | |
c0ebe874 RS |
9993 | if (op[1] == 0) |
9994 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, op[0]); | |
9995 | else if (op[0] == 0) | |
9996 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, op[1]); | |
df58fc94 | 9997 | else |
252b5132 | 9998 | { |
df58fc94 | 9999 | used_at = 1; |
c0ebe874 | 10000 | macro_build (NULL, "slt", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
10001 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
10002 | &offset_expr, AT, ZERO); | |
252b5132 | 10003 | } |
252b5132 RH |
10004 | break; |
10005 | ||
10006 | case M_BGTUL: | |
10007 | likely = 1; | |
10008 | case M_BGTU: | |
c0ebe874 | 10009 | if (op[1] == 0) |
df58fc94 | 10010 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
c0ebe874 RS |
10011 | &offset_expr, op[0], ZERO); |
10012 | else if (op[0] == 0) | |
df58fc94 RS |
10013 | goto do_false; |
10014 | else | |
252b5132 | 10015 | { |
df58fc94 | 10016 | used_at = 1; |
c0ebe874 | 10017 | macro_build (NULL, "sltu", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
10018 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
10019 | &offset_expr, AT, ZERO); | |
252b5132 | 10020 | } |
252b5132 RH |
10021 | break; |
10022 | ||
10023 | case M_BLEL: | |
10024 | likely = 1; | |
10025 | case M_BLE: | |
c0ebe874 RS |
10026 | if (op[1] == 0) |
10027 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, op[0]); | |
10028 | else if (op[0] == 0) | |
10029 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, op[1]); | |
df58fc94 | 10030 | else |
252b5132 | 10031 | { |
df58fc94 | 10032 | used_at = 1; |
c0ebe874 | 10033 | macro_build (NULL, "slt", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
10034 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
10035 | &offset_expr, AT, ZERO); | |
252b5132 | 10036 | } |
252b5132 RH |
10037 | break; |
10038 | ||
10039 | case M_BLEL_I: | |
10040 | likely = 1; | |
10041 | case M_BLE_I: | |
b0e6f033 | 10042 | if (imm_expr.X_add_number >= GPR_SMAX) |
252b5132 | 10043 | goto do_true; |
f9419b05 | 10044 | ++imm_expr.X_add_number; |
252b5132 RH |
10045 | /* FALLTHROUGH */ |
10046 | case M_BLT_I: | |
10047 | case M_BLTL_I: | |
10048 | if (mask == M_BLTL_I) | |
10049 | likely = 1; | |
b0e6f033 | 10050 | if (imm_expr.X_add_number == 0) |
c0ebe874 | 10051 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, op[0]); |
b0e6f033 | 10052 | else if (imm_expr.X_add_number == 1) |
c0ebe874 | 10053 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, op[0]); |
df58fc94 | 10054 | else |
252b5132 | 10055 | { |
df58fc94 | 10056 | used_at = 1; |
c0ebe874 | 10057 | set_at (op[0], 0); |
df58fc94 RS |
10058 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
10059 | &offset_expr, AT, ZERO); | |
252b5132 | 10060 | } |
252b5132 RH |
10061 | break; |
10062 | ||
10063 | case M_BLEUL: | |
10064 | likely = 1; | |
10065 | case M_BLEU: | |
c0ebe874 | 10066 | if (op[1] == 0) |
df58fc94 | 10067 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
c0ebe874 RS |
10068 | &offset_expr, op[0], ZERO); |
10069 | else if (op[0] == 0) | |
df58fc94 RS |
10070 | goto do_true; |
10071 | else | |
252b5132 | 10072 | { |
df58fc94 | 10073 | used_at = 1; |
c0ebe874 | 10074 | macro_build (NULL, "sltu", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
10075 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
10076 | &offset_expr, AT, ZERO); | |
252b5132 | 10077 | } |
252b5132 RH |
10078 | break; |
10079 | ||
10080 | case M_BLEUL_I: | |
10081 | likely = 1; | |
10082 | case M_BLEU_I: | |
c0ebe874 | 10083 | if (op[0] == 0 |
bad1aba3 | 10084 | || (GPR_SIZE == 32 |
f01dc953 | 10085 | && imm_expr.X_add_number == -1)) |
252b5132 | 10086 | goto do_true; |
f9419b05 | 10087 | ++imm_expr.X_add_number; |
252b5132 RH |
10088 | /* FALLTHROUGH */ |
10089 | case M_BLTU_I: | |
10090 | case M_BLTUL_I: | |
10091 | if (mask == M_BLTUL_I) | |
10092 | likely = 1; | |
b0e6f033 | 10093 | if (imm_expr.X_add_number == 0) |
252b5132 | 10094 | goto do_false; |
b0e6f033 | 10095 | else if (imm_expr.X_add_number == 1) |
df58fc94 | 10096 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
c0ebe874 | 10097 | &offset_expr, op[0], ZERO); |
df58fc94 | 10098 | else |
252b5132 | 10099 | { |
df58fc94 | 10100 | used_at = 1; |
c0ebe874 | 10101 | set_at (op[0], 1); |
df58fc94 RS |
10102 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
10103 | &offset_expr, AT, ZERO); | |
252b5132 | 10104 | } |
252b5132 RH |
10105 | break; |
10106 | ||
10107 | case M_BLTL: | |
10108 | likely = 1; | |
10109 | case M_BLT: | |
c0ebe874 RS |
10110 | if (op[1] == 0) |
10111 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, op[0]); | |
10112 | else if (op[0] == 0) | |
10113 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, op[1]); | |
df58fc94 | 10114 | else |
252b5132 | 10115 | { |
df58fc94 | 10116 | used_at = 1; |
c0ebe874 | 10117 | macro_build (NULL, "slt", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
10118 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
10119 | &offset_expr, AT, ZERO); | |
252b5132 | 10120 | } |
252b5132 RH |
10121 | break; |
10122 | ||
10123 | case M_BLTUL: | |
10124 | likely = 1; | |
10125 | case M_BLTU: | |
c0ebe874 | 10126 | if (op[1] == 0) |
252b5132 | 10127 | goto do_false; |
c0ebe874 | 10128 | else if (op[0] == 0) |
df58fc94 | 10129 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
c0ebe874 | 10130 | &offset_expr, ZERO, op[1]); |
df58fc94 | 10131 | else |
252b5132 | 10132 | { |
df58fc94 | 10133 | used_at = 1; |
c0ebe874 | 10134 | macro_build (NULL, "sltu", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
10135 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
10136 | &offset_expr, AT, ZERO); | |
252b5132 | 10137 | } |
252b5132 RH |
10138 | break; |
10139 | ||
10140 | case M_DDIV_3: | |
10141 | dbl = 1; | |
10142 | case M_DIV_3: | |
10143 | s = "mflo"; | |
10144 | goto do_div3; | |
10145 | case M_DREM_3: | |
10146 | dbl = 1; | |
10147 | case M_REM_3: | |
10148 | s = "mfhi"; | |
10149 | do_div3: | |
c0ebe874 | 10150 | if (op[2] == 0) |
252b5132 | 10151 | { |
1661c76c | 10152 | as_warn (_("divide by zero")); |
252b5132 | 10153 | if (mips_trap) |
df58fc94 | 10154 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 10155 | else |
df58fc94 | 10156 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 10157 | break; |
252b5132 RH |
10158 | } |
10159 | ||
7d10b47d | 10160 | start_noreorder (); |
252b5132 RH |
10161 | if (mips_trap) |
10162 | { | |
c0ebe874 RS |
10163 | macro_build (NULL, "teq", TRAP_FMT, op[2], ZERO, 7); |
10164 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", op[1], op[2]); | |
252b5132 RH |
10165 | } |
10166 | else | |
10167 | { | |
df58fc94 RS |
10168 | if (mips_opts.micromips) |
10169 | micromips_label_expr (&label_expr); | |
10170 | else | |
10171 | label_expr.X_add_number = 8; | |
c0ebe874 RS |
10172 | macro_build (&label_expr, "bne", "s,t,p", op[2], ZERO); |
10173 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", op[1], op[2]); | |
df58fc94 RS |
10174 | macro_build (NULL, "break", BRK_FMT, 7); |
10175 | if (mips_opts.micromips) | |
10176 | micromips_add_label (); | |
252b5132 RH |
10177 | } |
10178 | expr1.X_add_number = -1; | |
8fc2e39e | 10179 | used_at = 1; |
f6a22291 | 10180 | load_register (AT, &expr1, dbl); |
df58fc94 RS |
10181 | if (mips_opts.micromips) |
10182 | micromips_label_expr (&label_expr); | |
10183 | else | |
10184 | label_expr.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); | |
c0ebe874 | 10185 | macro_build (&label_expr, "bne", "s,t,p", op[2], AT); |
252b5132 RH |
10186 | if (dbl) |
10187 | { | |
10188 | expr1.X_add_number = 1; | |
f6a22291 | 10189 | load_register (AT, &expr1, dbl); |
df58fc94 | 10190 | macro_build (NULL, "dsll32", SHFT_FMT, AT, AT, 31); |
252b5132 RH |
10191 | } |
10192 | else | |
10193 | { | |
10194 | expr1.X_add_number = 0x80000000; | |
df58fc94 | 10195 | macro_build (&expr1, "lui", LUI_FMT, AT, BFD_RELOC_HI16); |
252b5132 RH |
10196 | } |
10197 | if (mips_trap) | |
10198 | { | |
c0ebe874 | 10199 | macro_build (NULL, "teq", TRAP_FMT, op[1], AT, 6); |
252b5132 RH |
10200 | /* We want to close the noreorder block as soon as possible, so |
10201 | that later insns are available for delay slot filling. */ | |
7d10b47d | 10202 | end_noreorder (); |
252b5132 RH |
10203 | } |
10204 | else | |
10205 | { | |
df58fc94 RS |
10206 | if (mips_opts.micromips) |
10207 | micromips_label_expr (&label_expr); | |
10208 | else | |
10209 | label_expr.X_add_number = 8; | |
c0ebe874 | 10210 | macro_build (&label_expr, "bne", "s,t,p", op[1], AT); |
a605d2b3 | 10211 | macro_build (NULL, "nop", ""); |
252b5132 RH |
10212 | |
10213 | /* We want to close the noreorder block as soon as possible, so | |
10214 | that later insns are available for delay slot filling. */ | |
7d10b47d | 10215 | end_noreorder (); |
252b5132 | 10216 | |
df58fc94 | 10217 | macro_build (NULL, "break", BRK_FMT, 6); |
252b5132 | 10218 | } |
df58fc94 RS |
10219 | if (mips_opts.micromips) |
10220 | micromips_add_label (); | |
c0ebe874 | 10221 | macro_build (NULL, s, MFHL_FMT, op[0]); |
252b5132 RH |
10222 | break; |
10223 | ||
10224 | case M_DIV_3I: | |
10225 | s = "div"; | |
10226 | s2 = "mflo"; | |
10227 | goto do_divi; | |
10228 | case M_DIVU_3I: | |
10229 | s = "divu"; | |
10230 | s2 = "mflo"; | |
10231 | goto do_divi; | |
10232 | case M_REM_3I: | |
10233 | s = "div"; | |
10234 | s2 = "mfhi"; | |
10235 | goto do_divi; | |
10236 | case M_REMU_3I: | |
10237 | s = "divu"; | |
10238 | s2 = "mfhi"; | |
10239 | goto do_divi; | |
10240 | case M_DDIV_3I: | |
10241 | dbl = 1; | |
10242 | s = "ddiv"; | |
10243 | s2 = "mflo"; | |
10244 | goto do_divi; | |
10245 | case M_DDIVU_3I: | |
10246 | dbl = 1; | |
10247 | s = "ddivu"; | |
10248 | s2 = "mflo"; | |
10249 | goto do_divi; | |
10250 | case M_DREM_3I: | |
10251 | dbl = 1; | |
10252 | s = "ddiv"; | |
10253 | s2 = "mfhi"; | |
10254 | goto do_divi; | |
10255 | case M_DREMU_3I: | |
10256 | dbl = 1; | |
10257 | s = "ddivu"; | |
10258 | s2 = "mfhi"; | |
10259 | do_divi: | |
b0e6f033 | 10260 | if (imm_expr.X_add_number == 0) |
252b5132 | 10261 | { |
1661c76c | 10262 | as_warn (_("divide by zero")); |
252b5132 | 10263 | if (mips_trap) |
df58fc94 | 10264 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 10265 | else |
df58fc94 | 10266 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 10267 | break; |
252b5132 | 10268 | } |
b0e6f033 | 10269 | if (imm_expr.X_add_number == 1) |
252b5132 RH |
10270 | { |
10271 | if (strcmp (s2, "mflo") == 0) | |
c0ebe874 | 10272 | move_register (op[0], op[1]); |
252b5132 | 10273 | else |
c0ebe874 | 10274 | move_register (op[0], ZERO); |
8fc2e39e | 10275 | break; |
252b5132 | 10276 | } |
b0e6f033 | 10277 | if (imm_expr.X_add_number == -1 && s[strlen (s) - 1] != 'u') |
252b5132 RH |
10278 | { |
10279 | if (strcmp (s2, "mflo") == 0) | |
c0ebe874 | 10280 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", op[0], op[1]); |
252b5132 | 10281 | else |
c0ebe874 | 10282 | move_register (op[0], ZERO); |
8fc2e39e | 10283 | break; |
252b5132 RH |
10284 | } |
10285 | ||
8fc2e39e | 10286 | used_at = 1; |
67c0d1eb | 10287 | load_register (AT, &imm_expr, dbl); |
c0ebe874 RS |
10288 | macro_build (NULL, s, "z,s,t", op[1], AT); |
10289 | macro_build (NULL, s2, MFHL_FMT, op[0]); | |
252b5132 RH |
10290 | break; |
10291 | ||
10292 | case M_DIVU_3: | |
10293 | s = "divu"; | |
10294 | s2 = "mflo"; | |
10295 | goto do_divu3; | |
10296 | case M_REMU_3: | |
10297 | s = "divu"; | |
10298 | s2 = "mfhi"; | |
10299 | goto do_divu3; | |
10300 | case M_DDIVU_3: | |
10301 | s = "ddivu"; | |
10302 | s2 = "mflo"; | |
10303 | goto do_divu3; | |
10304 | case M_DREMU_3: | |
10305 | s = "ddivu"; | |
10306 | s2 = "mfhi"; | |
10307 | do_divu3: | |
7d10b47d | 10308 | start_noreorder (); |
252b5132 RH |
10309 | if (mips_trap) |
10310 | { | |
c0ebe874 RS |
10311 | macro_build (NULL, "teq", TRAP_FMT, op[2], ZERO, 7); |
10312 | macro_build (NULL, s, "z,s,t", op[1], op[2]); | |
252b5132 RH |
10313 | /* We want to close the noreorder block as soon as possible, so |
10314 | that later insns are available for delay slot filling. */ | |
7d10b47d | 10315 | end_noreorder (); |
252b5132 RH |
10316 | } |
10317 | else | |
10318 | { | |
df58fc94 RS |
10319 | if (mips_opts.micromips) |
10320 | micromips_label_expr (&label_expr); | |
10321 | else | |
10322 | label_expr.X_add_number = 8; | |
c0ebe874 RS |
10323 | macro_build (&label_expr, "bne", "s,t,p", op[2], ZERO); |
10324 | macro_build (NULL, s, "z,s,t", op[1], op[2]); | |
252b5132 RH |
10325 | |
10326 | /* We want to close the noreorder block as soon as possible, so | |
10327 | that later insns are available for delay slot filling. */ | |
7d10b47d | 10328 | end_noreorder (); |
df58fc94 RS |
10329 | macro_build (NULL, "break", BRK_FMT, 7); |
10330 | if (mips_opts.micromips) | |
10331 | micromips_add_label (); | |
252b5132 | 10332 | } |
c0ebe874 | 10333 | macro_build (NULL, s2, MFHL_FMT, op[0]); |
8fc2e39e | 10334 | break; |
252b5132 | 10335 | |
1abe91b1 MR |
10336 | case M_DLCA_AB: |
10337 | dbl = 1; | |
10338 | case M_LCA_AB: | |
10339 | call = 1; | |
10340 | goto do_la; | |
252b5132 RH |
10341 | case M_DLA_AB: |
10342 | dbl = 1; | |
10343 | case M_LA_AB: | |
1abe91b1 | 10344 | do_la: |
252b5132 RH |
10345 | /* Load the address of a symbol into a register. If breg is not |
10346 | zero, we then add a base register to it. */ | |
10347 | ||
c0ebe874 | 10348 | breg = op[2]; |
bad1aba3 | 10349 | if (dbl && GPR_SIZE == 32) |
ece794d9 MF |
10350 | as_warn (_("dla used to load 32-bit register; recommend using la " |
10351 | "instead")); | |
3bec30a8 | 10352 | |
90ecf173 | 10353 | if (!dbl && HAVE_64BIT_OBJECTS) |
ece794d9 MF |
10354 | as_warn (_("la used to load 64-bit address; recommend using dla " |
10355 | "instead")); | |
3bec30a8 | 10356 | |
f2ae14a1 | 10357 | if (small_offset_p (0, align, 16)) |
0c11417f | 10358 | { |
c0ebe874 | 10359 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", op[0], breg, |
f2ae14a1 | 10360 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2]); |
8fc2e39e | 10361 | break; |
0c11417f MR |
10362 | } |
10363 | ||
c0ebe874 | 10364 | if (mips_opts.at && (op[0] == breg)) |
afdbd6d0 CD |
10365 | { |
10366 | tempreg = AT; | |
10367 | used_at = 1; | |
10368 | } | |
10369 | else | |
c0ebe874 | 10370 | tempreg = op[0]; |
afdbd6d0 | 10371 | |
252b5132 RH |
10372 | if (offset_expr.X_op != O_symbol |
10373 | && offset_expr.X_op != O_constant) | |
10374 | { | |
1661c76c | 10375 | as_bad (_("expression too complex")); |
252b5132 RH |
10376 | offset_expr.X_op = O_constant; |
10377 | } | |
10378 | ||
252b5132 | 10379 | if (offset_expr.X_op == O_constant) |
aed1a261 | 10380 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
10381 | else if (mips_pic == NO_PIC) |
10382 | { | |
d6bc6245 | 10383 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 10384 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
10385 | Otherwise we want |
10386 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
10387 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
10388 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 10389 | so we may as well always use the latter form. |
76b3015f | 10390 | |
6caf9ef4 TS |
10391 | With 64bit address space and a usable $at we want |
10392 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
10393 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
10394 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
10395 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
10396 | dsll32 $tempreg,0 | |
10397 | daddu $tempreg,$tempreg,$at | |
10398 | ||
10399 | If $at is already in use, we use a path which is suboptimal | |
10400 | on superscalar processors. | |
10401 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
10402 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
10403 | dsll $tempreg,16 | |
10404 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
10405 | dsll $tempreg,16 | |
10406 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
10407 | ||
10408 | For GP relative symbols in 64bit address space we can use | |
10409 | the same sequence as in 32bit address space. */ | |
aed1a261 | 10410 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 10411 | { |
6caf9ef4 TS |
10412 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
10413 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
10414 | { | |
10415 | relax_start (offset_expr.X_add_symbol); | |
10416 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
10417 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
10418 | relax_switch (); | |
10419 | } | |
d6bc6245 | 10420 | |
741fe287 | 10421 | if (used_at == 0 && mips_opts.at) |
98d3f06f | 10422 | { |
df58fc94 | 10423 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 10424 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 10425 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 10426 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 10427 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 10428 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 10429 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 10430 | AT, AT, BFD_RELOC_LO16); |
df58fc94 | 10431 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb | 10432 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
98d3f06f KH |
10433 | used_at = 1; |
10434 | } | |
10435 | else | |
10436 | { | |
df58fc94 | 10437 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 10438 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 10439 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 10440 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
df58fc94 | 10441 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 10442 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 10443 | tempreg, tempreg, BFD_RELOC_HI16_S); |
df58fc94 | 10444 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 10445 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 10446 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 10447 | } |
6caf9ef4 TS |
10448 | |
10449 | if (mips_relax.sequence) | |
10450 | relax_end (); | |
98d3f06f KH |
10451 | } |
10452 | else | |
10453 | { | |
10454 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 10455 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 10456 | { |
4d7206a2 | 10457 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
10458 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
10459 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 10460 | relax_switch (); |
98d3f06f | 10461 | } |
6943caf0 | 10462 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
1661c76c | 10463 | as_bad (_("offset too large")); |
67c0d1eb RS |
10464 | macro_build_lui (&offset_expr, tempreg); |
10465 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
10466 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
10467 | if (mips_relax.sequence) |
10468 | relax_end (); | |
98d3f06f | 10469 | } |
252b5132 | 10470 | } |
0a44bf69 | 10471 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 10472 | { |
9117d219 NC |
10473 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
10474 | ||
252b5132 RH |
10475 | /* If this is a reference to an external symbol, and there |
10476 | is no constant, we want | |
10477 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 10478 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 10479 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
10480 | For a local symbol, we want |
10481 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10482 | nop | |
10483 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
10484 | ||
10485 | If we have a small constant, and this is a reference to | |
10486 | an external symbol, we want | |
10487 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10488 | nop | |
10489 | addiu $tempreg,$tempreg,<constant> | |
10490 | For a local symbol, we want the same instruction | |
10491 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
10492 | addiu instruction. | |
10493 | ||
10494 | If we have a large constant, and this is a reference to | |
10495 | an external symbol, we want | |
10496 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10497 | lui $at,<hiconstant> | |
10498 | addiu $at,$at,<loconstant> | |
10499 | addu $tempreg,$tempreg,$at | |
10500 | For a local symbol, we want the same instruction | |
10501 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 10502 | addiu instruction. |
ed6fb7bd SC |
10503 | */ |
10504 | ||
4d7206a2 | 10505 | if (offset_expr.X_add_number == 0) |
252b5132 | 10506 | { |
0a44bf69 RS |
10507 | if (mips_pic == SVR4_PIC |
10508 | && breg == 0 | |
10509 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
10510 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
10511 | ||
10512 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
10513 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10514 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 10515 | if (breg != 0) |
252b5132 RH |
10516 | { |
10517 | /* We're going to put in an addu instruction using | |
10518 | tempreg, so we may as well insert the nop right | |
10519 | now. */ | |
269137b2 | 10520 | load_delay_nop (); |
252b5132 | 10521 | } |
4d7206a2 | 10522 | relax_switch (); |
67c0d1eb RS |
10523 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10524 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 10525 | load_delay_nop (); |
67c0d1eb RS |
10526 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
10527 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 10528 | relax_end (); |
252b5132 RH |
10529 | /* FIXME: If breg == 0, and the next instruction uses |
10530 | $tempreg, then if this variant case is used an extra | |
10531 | nop will be generated. */ | |
10532 | } | |
4d7206a2 RS |
10533 | else if (offset_expr.X_add_number >= -0x8000 |
10534 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 10535 | { |
67c0d1eb | 10536 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 10537 | load_delay_nop (); |
67c0d1eb | 10538 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
10539 | } |
10540 | else | |
10541 | { | |
4d7206a2 RS |
10542 | expr1.X_add_number = offset_expr.X_add_number; |
10543 | offset_expr.X_add_number = | |
43c0598f | 10544 | SEXT_16BIT (offset_expr.X_add_number); |
67c0d1eb | 10545 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 10546 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
10547 | /* If we are going to add in a base register, and the |
10548 | target register and the base register are the same, | |
10549 | then we are using AT as a temporary register. Since | |
10550 | we want to load the constant into AT, we add our | |
10551 | current AT (from the global offset table) and the | |
10552 | register into the register now, and pretend we were | |
10553 | not using a base register. */ | |
c0ebe874 | 10554 | if (breg == op[0]) |
252b5132 | 10555 | { |
269137b2 | 10556 | load_delay_nop (); |
67c0d1eb | 10557 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 | 10558 | op[0], AT, breg); |
252b5132 | 10559 | breg = 0; |
c0ebe874 | 10560 | tempreg = op[0]; |
252b5132 | 10561 | } |
f6a22291 | 10562 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
10563 | used_at = 1; |
10564 | } | |
10565 | } | |
0a44bf69 | 10566 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 10567 | { |
67c0d1eb | 10568 | int add_breg_early = 0; |
f5040a92 AO |
10569 | |
10570 | /* If this is a reference to an external, and there is no | |
10571 | constant, or local symbol (*), with or without a | |
10572 | constant, we want | |
10573 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 10574 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
10575 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
10576 | ||
10577 | If we have a small constant, and this is a reference to | |
10578 | an external symbol, we want | |
10579 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
10580 | addiu $tempreg,$tempreg,<constant> | |
10581 | ||
10582 | If we have a large constant, and this is a reference to | |
10583 | an external symbol, we want | |
10584 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
10585 | lui $at,<hiconstant> | |
10586 | addiu $at,$at,<loconstant> | |
10587 | addu $tempreg,$tempreg,$at | |
10588 | ||
10589 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
10590 | local symbols, even though it introduces an additional | |
10591 | instruction. */ | |
10592 | ||
f5040a92 AO |
10593 | if (offset_expr.X_add_number) |
10594 | { | |
4d7206a2 | 10595 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
10596 | offset_expr.X_add_number = 0; |
10597 | ||
4d7206a2 | 10598 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
10599 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10600 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
10601 | |
10602 | if (expr1.X_add_number >= -0x8000 | |
10603 | && expr1.X_add_number < 0x8000) | |
10604 | { | |
67c0d1eb RS |
10605 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
10606 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 10607 | } |
ecd13cd3 | 10608 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 10609 | { |
c0ebe874 RS |
10610 | unsigned int dreg; |
10611 | ||
f5040a92 AO |
10612 | /* If we are going to add in a base register, and the |
10613 | target register and the base register are the same, | |
10614 | then we are using AT as a temporary register. Since | |
10615 | we want to load the constant into AT, we add our | |
10616 | current AT (from the global offset table) and the | |
10617 | register into the register now, and pretend we were | |
10618 | not using a base register. */ | |
c0ebe874 | 10619 | if (breg != op[0]) |
f5040a92 AO |
10620 | dreg = tempreg; |
10621 | else | |
10622 | { | |
9c2799c2 | 10623 | gas_assert (tempreg == AT); |
67c0d1eb | 10624 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10625 | op[0], AT, breg); |
10626 | dreg = op[0]; | |
67c0d1eb | 10627 | add_breg_early = 1; |
f5040a92 AO |
10628 | } |
10629 | ||
f6a22291 | 10630 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 10631 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10632 | dreg, dreg, AT); |
f5040a92 | 10633 | |
f5040a92 AO |
10634 | used_at = 1; |
10635 | } | |
10636 | else | |
10637 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
10638 | ||
4d7206a2 | 10639 | relax_switch (); |
f5040a92 AO |
10640 | offset_expr.X_add_number = expr1.X_add_number; |
10641 | ||
67c0d1eb RS |
10642 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10643 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
10644 | if (add_breg_early) | |
f5040a92 | 10645 | { |
67c0d1eb | 10646 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 | 10647 | op[0], tempreg, breg); |
f5040a92 | 10648 | breg = 0; |
c0ebe874 | 10649 | tempreg = op[0]; |
f5040a92 | 10650 | } |
4d7206a2 | 10651 | relax_end (); |
f5040a92 | 10652 | } |
4d7206a2 | 10653 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 10654 | { |
4d7206a2 | 10655 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
10656 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10657 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 10658 | relax_switch (); |
67c0d1eb RS |
10659 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10660 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 10661 | relax_end (); |
f5040a92 | 10662 | } |
4d7206a2 | 10663 | else |
f5040a92 | 10664 | { |
67c0d1eb RS |
10665 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10666 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
10667 | } |
10668 | } | |
0a44bf69 | 10669 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 10670 | { |
67c0d1eb | 10671 | int gpdelay; |
9117d219 NC |
10672 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
10673 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 10674 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
10675 | |
10676 | /* This is the large GOT case. If this is a reference to an | |
10677 | external symbol, and there is no constant, we want | |
10678 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10679 | addu $tempreg,$tempreg,$gp | |
10680 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 10681 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
10682 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
10683 | addu $tempreg,$tempreg,$gp | |
10684 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
10685 | For a local symbol, we want |
10686 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10687 | nop | |
10688 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
10689 | ||
10690 | If we have a small constant, and this is a reference to | |
10691 | an external symbol, we want | |
10692 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10693 | addu $tempreg,$tempreg,$gp | |
10694 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10695 | nop | |
10696 | addiu $tempreg,$tempreg,<constant> | |
10697 | For a local symbol, we want | |
10698 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10699 | nop | |
10700 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
10701 | ||
10702 | If we have a large constant, and this is a reference to | |
10703 | an external symbol, we want | |
10704 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10705 | addu $tempreg,$tempreg,$gp | |
10706 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10707 | lui $at,<hiconstant> | |
10708 | addiu $at,$at,<loconstant> | |
10709 | addu $tempreg,$tempreg,$at | |
10710 | For a local symbol, we want | |
10711 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10712 | lui $at,<hiconstant> | |
10713 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
10714 | addu $tempreg,$tempreg,$at | |
f5040a92 | 10715 | */ |
438c16b8 | 10716 | |
252b5132 RH |
10717 | expr1.X_add_number = offset_expr.X_add_number; |
10718 | offset_expr.X_add_number = 0; | |
4d7206a2 | 10719 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 10720 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
10721 | if (expr1.X_add_number == 0 && breg == 0 |
10722 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
10723 | { |
10724 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
10725 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
10726 | } | |
df58fc94 | 10727 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 10728 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10729 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 10730 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 10731 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
10732 | if (expr1.X_add_number == 0) |
10733 | { | |
67c0d1eb | 10734 | if (breg != 0) |
252b5132 RH |
10735 | { |
10736 | /* We're going to put in an addu instruction using | |
10737 | tempreg, so we may as well insert the nop right | |
10738 | now. */ | |
269137b2 | 10739 | load_delay_nop (); |
252b5132 | 10740 | } |
252b5132 RH |
10741 | } |
10742 | else if (expr1.X_add_number >= -0x8000 | |
10743 | && expr1.X_add_number < 0x8000) | |
10744 | { | |
269137b2 | 10745 | load_delay_nop (); |
67c0d1eb | 10746 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 10747 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
10748 | } |
10749 | else | |
10750 | { | |
c0ebe874 RS |
10751 | unsigned int dreg; |
10752 | ||
252b5132 RH |
10753 | /* If we are going to add in a base register, and the |
10754 | target register and the base register are the same, | |
10755 | then we are using AT as a temporary register. Since | |
10756 | we want to load the constant into AT, we add our | |
10757 | current AT (from the global offset table) and the | |
10758 | register into the register now, and pretend we were | |
10759 | not using a base register. */ | |
c0ebe874 | 10760 | if (breg != op[0]) |
67c0d1eb | 10761 | dreg = tempreg; |
252b5132 RH |
10762 | else |
10763 | { | |
9c2799c2 | 10764 | gas_assert (tempreg == AT); |
269137b2 | 10765 | load_delay_nop (); |
67c0d1eb | 10766 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10767 | op[0], AT, breg); |
10768 | dreg = op[0]; | |
252b5132 RH |
10769 | } |
10770 | ||
f6a22291 | 10771 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 10772 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 10773 | |
252b5132 RH |
10774 | used_at = 1; |
10775 | } | |
43c0598f | 10776 | offset_expr.X_add_number = SEXT_16BIT (expr1.X_add_number); |
4d7206a2 | 10777 | relax_switch (); |
252b5132 | 10778 | |
67c0d1eb | 10779 | if (gpdelay) |
252b5132 RH |
10780 | { |
10781 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 10782 | the first instruction on the main stream does not. */ |
67c0d1eb | 10783 | macro_build (NULL, "nop", ""); |
252b5132 | 10784 | } |
ed6fb7bd | 10785 | |
67c0d1eb RS |
10786 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10787 | local_reloc_type, mips_gp_register); | |
f5040a92 | 10788 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
10789 | && expr1.X_add_number < 0x8000) |
10790 | { | |
269137b2 | 10791 | load_delay_nop (); |
67c0d1eb RS |
10792 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
10793 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 10794 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
10795 | register, the external symbol case ended with a load, |
10796 | so if the symbol turns out to not be external, and | |
10797 | the next instruction uses tempreg, an unnecessary nop | |
10798 | will be inserted. */ | |
252b5132 RH |
10799 | } |
10800 | else | |
10801 | { | |
c0ebe874 | 10802 | if (breg == op[0]) |
252b5132 RH |
10803 | { |
10804 | /* We must add in the base register now, as in the | |
f5040a92 | 10805 | external symbol case. */ |
9c2799c2 | 10806 | gas_assert (tempreg == AT); |
269137b2 | 10807 | load_delay_nop (); |
67c0d1eb | 10808 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10809 | op[0], AT, breg); |
10810 | tempreg = op[0]; | |
252b5132 | 10811 | /* We set breg to 0 because we have arranged to add |
f5040a92 | 10812 | it in in both cases. */ |
252b5132 RH |
10813 | breg = 0; |
10814 | } | |
10815 | ||
67c0d1eb RS |
10816 | macro_build_lui (&expr1, AT); |
10817 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 10818 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 10819 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10820 | tempreg, tempreg, AT); |
8fc2e39e | 10821 | used_at = 1; |
252b5132 | 10822 | } |
4d7206a2 | 10823 | relax_end (); |
252b5132 | 10824 | } |
0a44bf69 | 10825 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 10826 | { |
f5040a92 AO |
10827 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
10828 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 10829 | int add_breg_early = 0; |
f5040a92 AO |
10830 | |
10831 | /* This is the large GOT case. If this is a reference to an | |
10832 | external symbol, and there is no constant, we want | |
10833 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10834 | add $tempreg,$tempreg,$gp | |
10835 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 10836 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
10837 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
10838 | add $tempreg,$tempreg,$gp | |
10839 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
10840 | ||
10841 | If we have a small constant, and this is a reference to | |
10842 | an external symbol, we want | |
10843 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10844 | add $tempreg,$tempreg,$gp | |
10845 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10846 | addi $tempreg,$tempreg,<constant> | |
10847 | ||
10848 | If we have a large constant, and this is a reference to | |
10849 | an external symbol, we want | |
10850 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10851 | addu $tempreg,$tempreg,$gp | |
10852 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10853 | lui $at,<hiconstant> | |
10854 | addi $at,$at,<loconstant> | |
10855 | add $tempreg,$tempreg,$at | |
10856 | ||
10857 | If we have NewABI, and we know it's a local symbol, we want | |
10858 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
10859 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
10860 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
10861 | ||
4d7206a2 | 10862 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 10863 | |
4d7206a2 | 10864 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
10865 | offset_expr.X_add_number = 0; |
10866 | ||
1abe91b1 MR |
10867 | if (expr1.X_add_number == 0 && breg == 0 |
10868 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
10869 | { |
10870 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
10871 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
10872 | } | |
df58fc94 | 10873 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 10874 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10875 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
10876 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10877 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
10878 | |
10879 | if (expr1.X_add_number == 0) | |
4d7206a2 | 10880 | ; |
f5040a92 AO |
10881 | else if (expr1.X_add_number >= -0x8000 |
10882 | && expr1.X_add_number < 0x8000) | |
10883 | { | |
67c0d1eb | 10884 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 10885 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 10886 | } |
ecd13cd3 | 10887 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 10888 | { |
c0ebe874 RS |
10889 | unsigned int dreg; |
10890 | ||
f5040a92 AO |
10891 | /* If we are going to add in a base register, and the |
10892 | target register and the base register are the same, | |
10893 | then we are using AT as a temporary register. Since | |
10894 | we want to load the constant into AT, we add our | |
10895 | current AT (from the global offset table) and the | |
10896 | register into the register now, and pretend we were | |
10897 | not using a base register. */ | |
c0ebe874 | 10898 | if (breg != op[0]) |
f5040a92 AO |
10899 | dreg = tempreg; |
10900 | else | |
10901 | { | |
9c2799c2 | 10902 | gas_assert (tempreg == AT); |
67c0d1eb | 10903 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10904 | op[0], AT, breg); |
10905 | dreg = op[0]; | |
67c0d1eb | 10906 | add_breg_early = 1; |
f5040a92 AO |
10907 | } |
10908 | ||
f6a22291 | 10909 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 10910 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 10911 | |
f5040a92 AO |
10912 | used_at = 1; |
10913 | } | |
10914 | else | |
10915 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
10916 | ||
4d7206a2 | 10917 | relax_switch (); |
f5040a92 | 10918 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
10919 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10920 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
10921 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
10922 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
10923 | if (add_breg_early) | |
f5040a92 | 10924 | { |
67c0d1eb | 10925 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 | 10926 | op[0], tempreg, breg); |
f5040a92 | 10927 | breg = 0; |
c0ebe874 | 10928 | tempreg = op[0]; |
f5040a92 | 10929 | } |
4d7206a2 | 10930 | relax_end (); |
f5040a92 | 10931 | } |
252b5132 RH |
10932 | else |
10933 | abort (); | |
10934 | ||
10935 | if (breg != 0) | |
c0ebe874 | 10936 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", op[0], tempreg, breg); |
252b5132 RH |
10937 | break; |
10938 | ||
52b6b6b9 | 10939 | case M_MSGSND: |
df58fc94 | 10940 | gas_assert (!mips_opts.micromips); |
c0ebe874 | 10941 | macro_build (NULL, "c2", "C", (op[0] << 16) | 0x01); |
c7af4273 | 10942 | break; |
52b6b6b9 JM |
10943 | |
10944 | case M_MSGLD: | |
df58fc94 | 10945 | gas_assert (!mips_opts.micromips); |
c8276761 | 10946 | macro_build (NULL, "c2", "C", 0x02); |
c7af4273 | 10947 | break; |
52b6b6b9 JM |
10948 | |
10949 | case M_MSGLD_T: | |
df58fc94 | 10950 | gas_assert (!mips_opts.micromips); |
c0ebe874 | 10951 | macro_build (NULL, "c2", "C", (op[0] << 16) | 0x02); |
c7af4273 | 10952 | break; |
52b6b6b9 JM |
10953 | |
10954 | case M_MSGWAIT: | |
df58fc94 | 10955 | gas_assert (!mips_opts.micromips); |
52b6b6b9 | 10956 | macro_build (NULL, "c2", "C", 3); |
c7af4273 | 10957 | break; |
52b6b6b9 JM |
10958 | |
10959 | case M_MSGWAIT_T: | |
df58fc94 | 10960 | gas_assert (!mips_opts.micromips); |
c0ebe874 | 10961 | macro_build (NULL, "c2", "C", (op[0] << 16) | 0x03); |
c7af4273 | 10962 | break; |
52b6b6b9 | 10963 | |
252b5132 RH |
10964 | case M_J_A: |
10965 | /* The j instruction may not be used in PIC code, since it | |
10966 | requires an absolute address. We convert it to a b | |
10967 | instruction. */ | |
10968 | if (mips_pic == NO_PIC) | |
67c0d1eb | 10969 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 10970 | else |
67c0d1eb | 10971 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 10972 | break; |
252b5132 RH |
10973 | |
10974 | /* The jal instructions must be handled as macros because when | |
10975 | generating PIC code they expand to multi-instruction | |
10976 | sequences. Normally they are simple instructions. */ | |
df58fc94 | 10977 | case M_JALS_1: |
c0ebe874 RS |
10978 | op[1] = op[0]; |
10979 | op[0] = RA; | |
df58fc94 RS |
10980 | /* Fall through. */ |
10981 | case M_JALS_2: | |
10982 | gas_assert (mips_opts.micromips); | |
833794fc MR |
10983 | if (mips_opts.insn32) |
10984 | { | |
1661c76c | 10985 | as_bad (_("opcode not supported in the `insn32' mode `%s'"), str); |
833794fc MR |
10986 | break; |
10987 | } | |
df58fc94 RS |
10988 | jals = 1; |
10989 | goto jal; | |
252b5132 | 10990 | case M_JAL_1: |
c0ebe874 RS |
10991 | op[1] = op[0]; |
10992 | op[0] = RA; | |
252b5132 RH |
10993 | /* Fall through. */ |
10994 | case M_JAL_2: | |
df58fc94 | 10995 | jal: |
3e722fb5 | 10996 | if (mips_pic == NO_PIC) |
df58fc94 RS |
10997 | { |
10998 | s = jals ? "jalrs" : "jalr"; | |
e64af278 | 10999 | if (mips_opts.micromips |
833794fc | 11000 | && !mips_opts.insn32 |
c0ebe874 | 11001 | && op[0] == RA |
e64af278 | 11002 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
c0ebe874 | 11003 | macro_build (NULL, s, "mj", op[1]); |
df58fc94 | 11004 | else |
c0ebe874 | 11005 | macro_build (NULL, s, JALR_FMT, op[0], op[1]); |
df58fc94 | 11006 | } |
0a44bf69 | 11007 | else |
252b5132 | 11008 | { |
df58fc94 RS |
11009 | int cprestore = (mips_pic == SVR4_PIC && !HAVE_NEWABI |
11010 | && mips_cprestore_offset >= 0); | |
11011 | ||
c0ebe874 | 11012 | if (op[1] != PIC_CALL_REG) |
252b5132 | 11013 | as_warn (_("MIPS PIC call to register other than $25")); |
bdaaa2e1 | 11014 | |
833794fc MR |
11015 | s = ((mips_opts.micromips |
11016 | && !mips_opts.insn32 | |
11017 | && (!mips_opts.noreorder || cprestore)) | |
df58fc94 | 11018 | ? "jalrs" : "jalr"); |
e64af278 | 11019 | if (mips_opts.micromips |
833794fc | 11020 | && !mips_opts.insn32 |
c0ebe874 | 11021 | && op[0] == RA |
e64af278 | 11022 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
c0ebe874 | 11023 | macro_build (NULL, s, "mj", op[1]); |
df58fc94 | 11024 | else |
c0ebe874 | 11025 | macro_build (NULL, s, JALR_FMT, op[0], op[1]); |
0a44bf69 | 11026 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 11027 | { |
6478892d | 11028 | if (mips_cprestore_offset < 0) |
1661c76c | 11029 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
6478892d TS |
11030 | else |
11031 | { | |
90ecf173 | 11032 | if (!mips_frame_reg_valid) |
7a621144 | 11033 | { |
1661c76c | 11034 | as_warn (_("no .frame pseudo-op used in PIC code")); |
7a621144 DJ |
11035 | /* Quiet this warning. */ |
11036 | mips_frame_reg_valid = 1; | |
11037 | } | |
90ecf173 | 11038 | if (!mips_cprestore_valid) |
7a621144 | 11039 | { |
1661c76c | 11040 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
7a621144 DJ |
11041 | /* Quiet this warning. */ |
11042 | mips_cprestore_valid = 1; | |
11043 | } | |
d3fca0b5 MR |
11044 | if (mips_opts.noreorder) |
11045 | macro_build (NULL, "nop", ""); | |
6478892d | 11046 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 11047 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 11048 | mips_gp_register, |
256ab948 TS |
11049 | mips_frame_reg, |
11050 | HAVE_64BIT_ADDRESSES); | |
6478892d | 11051 | } |
252b5132 RH |
11052 | } |
11053 | } | |
252b5132 | 11054 | |
8fc2e39e | 11055 | break; |
252b5132 | 11056 | |
df58fc94 RS |
11057 | case M_JALS_A: |
11058 | gas_assert (mips_opts.micromips); | |
833794fc MR |
11059 | if (mips_opts.insn32) |
11060 | { | |
1661c76c | 11061 | as_bad (_("opcode not supported in the `insn32' mode `%s'"), str); |
833794fc MR |
11062 | break; |
11063 | } | |
df58fc94 RS |
11064 | jals = 1; |
11065 | /* Fall through. */ | |
252b5132 RH |
11066 | case M_JAL_A: |
11067 | if (mips_pic == NO_PIC) | |
df58fc94 | 11068 | macro_build (&offset_expr, jals ? "jals" : "jal", "a"); |
252b5132 RH |
11069 | else if (mips_pic == SVR4_PIC) |
11070 | { | |
11071 | /* If this is a reference to an external symbol, and we are | |
11072 | using a small GOT, we want | |
11073 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
11074 | nop | |
f9419b05 | 11075 | jalr $ra,$25 |
252b5132 RH |
11076 | nop |
11077 | lw $gp,cprestore($sp) | |
11078 | The cprestore value is set using the .cprestore | |
11079 | pseudo-op. If we are using a big GOT, we want | |
11080 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
11081 | addu $25,$25,$gp | |
11082 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
11083 | nop | |
f9419b05 | 11084 | jalr $ra,$25 |
252b5132 RH |
11085 | nop |
11086 | lw $gp,cprestore($sp) | |
11087 | If the symbol is not external, we want | |
11088 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11089 | nop | |
11090 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 11091 | jalr $ra,$25 |
252b5132 | 11092 | nop |
438c16b8 | 11093 | lw $gp,cprestore($sp) |
f5040a92 AO |
11094 | |
11095 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
11096 | sequences above, minus nops, unless the symbol is local, | |
11097 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
11098 | GOT_DISP. */ | |
438c16b8 | 11099 | if (HAVE_NEWABI) |
252b5132 | 11100 | { |
90ecf173 | 11101 | if (!mips_big_got) |
f5040a92 | 11102 | { |
4d7206a2 | 11103 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
11104 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
11105 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 11106 | mips_gp_register); |
4d7206a2 | 11107 | relax_switch (); |
67c0d1eb RS |
11108 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
11109 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
11110 | mips_gp_register); |
11111 | relax_end (); | |
f5040a92 AO |
11112 | } |
11113 | else | |
11114 | { | |
4d7206a2 | 11115 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 11116 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
11117 | BFD_RELOC_MIPS_CALL_HI16); |
11118 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
11119 | PIC_CALL_REG, mips_gp_register); | |
11120 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
11121 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
11122 | PIC_CALL_REG); | |
4d7206a2 | 11123 | relax_switch (); |
67c0d1eb RS |
11124 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
11125 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
11126 | mips_gp_register); | |
11127 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
11128 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 11129 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 11130 | relax_end (); |
f5040a92 | 11131 | } |
684022ea | 11132 | |
df58fc94 | 11133 | macro_build_jalr (&offset_expr, 0); |
252b5132 RH |
11134 | } |
11135 | else | |
11136 | { | |
4d7206a2 | 11137 | relax_start (offset_expr.X_add_symbol); |
90ecf173 | 11138 | if (!mips_big_got) |
438c16b8 | 11139 | { |
67c0d1eb RS |
11140 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
11141 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 11142 | mips_gp_register); |
269137b2 | 11143 | load_delay_nop (); |
4d7206a2 | 11144 | relax_switch (); |
438c16b8 | 11145 | } |
252b5132 | 11146 | else |
252b5132 | 11147 | { |
67c0d1eb RS |
11148 | int gpdelay; |
11149 | ||
11150 | gpdelay = reg_needs_delay (mips_gp_register); | |
df58fc94 | 11151 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
11152 | BFD_RELOC_MIPS_CALL_HI16); |
11153 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
11154 | PIC_CALL_REG, mips_gp_register); | |
11155 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
11156 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
11157 | PIC_CALL_REG); | |
269137b2 | 11158 | load_delay_nop (); |
4d7206a2 | 11159 | relax_switch (); |
67c0d1eb RS |
11160 | if (gpdelay) |
11161 | macro_build (NULL, "nop", ""); | |
252b5132 | 11162 | } |
67c0d1eb RS |
11163 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
11164 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 11165 | mips_gp_register); |
269137b2 | 11166 | load_delay_nop (); |
67c0d1eb RS |
11167 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
11168 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 11169 | relax_end (); |
df58fc94 | 11170 | macro_build_jalr (&offset_expr, mips_cprestore_offset >= 0); |
438c16b8 | 11171 | |
6478892d | 11172 | if (mips_cprestore_offset < 0) |
1661c76c | 11173 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
6478892d TS |
11174 | else |
11175 | { | |
90ecf173 | 11176 | if (!mips_frame_reg_valid) |
7a621144 | 11177 | { |
1661c76c | 11178 | as_warn (_("no .frame pseudo-op used in PIC code")); |
7a621144 DJ |
11179 | /* Quiet this warning. */ |
11180 | mips_frame_reg_valid = 1; | |
11181 | } | |
90ecf173 | 11182 | if (!mips_cprestore_valid) |
7a621144 | 11183 | { |
1661c76c | 11184 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
7a621144 DJ |
11185 | /* Quiet this warning. */ |
11186 | mips_cprestore_valid = 1; | |
11187 | } | |
6478892d | 11188 | if (mips_opts.noreorder) |
67c0d1eb | 11189 | macro_build (NULL, "nop", ""); |
6478892d | 11190 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 11191 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 11192 | mips_gp_register, |
256ab948 TS |
11193 | mips_frame_reg, |
11194 | HAVE_64BIT_ADDRESSES); | |
6478892d | 11195 | } |
252b5132 RH |
11196 | } |
11197 | } | |
0a44bf69 | 11198 | else if (mips_pic == VXWORKS_PIC) |
1661c76c | 11199 | as_bad (_("non-PIC jump used in PIC library")); |
252b5132 RH |
11200 | else |
11201 | abort (); | |
11202 | ||
8fc2e39e | 11203 | break; |
252b5132 | 11204 | |
7f3c4072 | 11205 | case M_LBUE_AB: |
7f3c4072 CM |
11206 | s = "lbue"; |
11207 | fmt = "t,+j(b)"; | |
11208 | offbits = 9; | |
11209 | goto ld_st; | |
11210 | case M_LHUE_AB: | |
7f3c4072 CM |
11211 | s = "lhue"; |
11212 | fmt = "t,+j(b)"; | |
11213 | offbits = 9; | |
11214 | goto ld_st; | |
11215 | case M_LBE_AB: | |
7f3c4072 CM |
11216 | s = "lbe"; |
11217 | fmt = "t,+j(b)"; | |
11218 | offbits = 9; | |
11219 | goto ld_st; | |
11220 | case M_LHE_AB: | |
7f3c4072 CM |
11221 | s = "lhe"; |
11222 | fmt = "t,+j(b)"; | |
11223 | offbits = 9; | |
11224 | goto ld_st; | |
11225 | case M_LLE_AB: | |
7f3c4072 CM |
11226 | s = "lle"; |
11227 | fmt = "t,+j(b)"; | |
11228 | offbits = 9; | |
11229 | goto ld_st; | |
11230 | case M_LWE_AB: | |
7f3c4072 CM |
11231 | s = "lwe"; |
11232 | fmt = "t,+j(b)"; | |
11233 | offbits = 9; | |
11234 | goto ld_st; | |
11235 | case M_LWLE_AB: | |
7f3c4072 CM |
11236 | s = "lwle"; |
11237 | fmt = "t,+j(b)"; | |
11238 | offbits = 9; | |
11239 | goto ld_st; | |
11240 | case M_LWRE_AB: | |
7f3c4072 CM |
11241 | s = "lwre"; |
11242 | fmt = "t,+j(b)"; | |
11243 | offbits = 9; | |
11244 | goto ld_st; | |
11245 | case M_SBE_AB: | |
7f3c4072 CM |
11246 | s = "sbe"; |
11247 | fmt = "t,+j(b)"; | |
11248 | offbits = 9; | |
11249 | goto ld_st; | |
11250 | case M_SCE_AB: | |
7f3c4072 CM |
11251 | s = "sce"; |
11252 | fmt = "t,+j(b)"; | |
11253 | offbits = 9; | |
11254 | goto ld_st; | |
11255 | case M_SHE_AB: | |
7f3c4072 CM |
11256 | s = "she"; |
11257 | fmt = "t,+j(b)"; | |
11258 | offbits = 9; | |
11259 | goto ld_st; | |
11260 | case M_SWE_AB: | |
7f3c4072 CM |
11261 | s = "swe"; |
11262 | fmt = "t,+j(b)"; | |
11263 | offbits = 9; | |
11264 | goto ld_st; | |
11265 | case M_SWLE_AB: | |
7f3c4072 CM |
11266 | s = "swle"; |
11267 | fmt = "t,+j(b)"; | |
11268 | offbits = 9; | |
11269 | goto ld_st; | |
11270 | case M_SWRE_AB: | |
7f3c4072 CM |
11271 | s = "swre"; |
11272 | fmt = "t,+j(b)"; | |
11273 | offbits = 9; | |
11274 | goto ld_st; | |
dec0624d | 11275 | case M_ACLR_AB: |
dec0624d | 11276 | s = "aclr"; |
dec0624d | 11277 | fmt = "\\,~(b)"; |
7f3c4072 | 11278 | offbits = 12; |
dec0624d MR |
11279 | goto ld_st; |
11280 | case M_ASET_AB: | |
dec0624d | 11281 | s = "aset"; |
dec0624d | 11282 | fmt = "\\,~(b)"; |
7f3c4072 | 11283 | offbits = 12; |
dec0624d | 11284 | goto ld_st; |
252b5132 RH |
11285 | case M_LB_AB: |
11286 | s = "lb"; | |
df58fc94 | 11287 | fmt = "t,o(b)"; |
252b5132 RH |
11288 | goto ld; |
11289 | case M_LBU_AB: | |
11290 | s = "lbu"; | |
df58fc94 | 11291 | fmt = "t,o(b)"; |
252b5132 RH |
11292 | goto ld; |
11293 | case M_LH_AB: | |
11294 | s = "lh"; | |
df58fc94 | 11295 | fmt = "t,o(b)"; |
252b5132 RH |
11296 | goto ld; |
11297 | case M_LHU_AB: | |
11298 | s = "lhu"; | |
df58fc94 | 11299 | fmt = "t,o(b)"; |
252b5132 RH |
11300 | goto ld; |
11301 | case M_LW_AB: | |
11302 | s = "lw"; | |
df58fc94 | 11303 | fmt = "t,o(b)"; |
252b5132 RH |
11304 | goto ld; |
11305 | case M_LWC0_AB: | |
df58fc94 | 11306 | gas_assert (!mips_opts.micromips); |
252b5132 | 11307 | s = "lwc0"; |
df58fc94 | 11308 | fmt = "E,o(b)"; |
bdaaa2e1 | 11309 | /* Itbl support may require additional care here. */ |
252b5132 | 11310 | coproc = 1; |
df58fc94 | 11311 | goto ld_st; |
252b5132 RH |
11312 | case M_LWC1_AB: |
11313 | s = "lwc1"; | |
df58fc94 | 11314 | fmt = "T,o(b)"; |
bdaaa2e1 | 11315 | /* Itbl support may require additional care here. */ |
252b5132 | 11316 | coproc = 1; |
df58fc94 | 11317 | goto ld_st; |
252b5132 RH |
11318 | case M_LWC2_AB: |
11319 | s = "lwc2"; | |
df58fc94 | 11320 | fmt = COP12_FMT; |
7361da2c AB |
11321 | offbits = (mips_opts.micromips ? 12 |
11322 | : ISA_IS_R6 (mips_opts.isa) ? 11 | |
11323 | : 16); | |
bdaaa2e1 | 11324 | /* Itbl support may require additional care here. */ |
252b5132 | 11325 | coproc = 1; |
df58fc94 | 11326 | goto ld_st; |
252b5132 | 11327 | case M_LWC3_AB: |
df58fc94 | 11328 | gas_assert (!mips_opts.micromips); |
252b5132 | 11329 | s = "lwc3"; |
df58fc94 | 11330 | fmt = "E,o(b)"; |
bdaaa2e1 | 11331 | /* Itbl support may require additional care here. */ |
252b5132 | 11332 | coproc = 1; |
df58fc94 | 11333 | goto ld_st; |
252b5132 RH |
11334 | case M_LWL_AB: |
11335 | s = "lwl"; | |
df58fc94 | 11336 | fmt = MEM12_FMT; |
7f3c4072 | 11337 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 11338 | goto ld_st; |
252b5132 RH |
11339 | case M_LWR_AB: |
11340 | s = "lwr"; | |
df58fc94 | 11341 | fmt = MEM12_FMT; |
7f3c4072 | 11342 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 11343 | goto ld_st; |
252b5132 | 11344 | case M_LDC1_AB: |
252b5132 | 11345 | s = "ldc1"; |
df58fc94 | 11346 | fmt = "T,o(b)"; |
bdaaa2e1 | 11347 | /* Itbl support may require additional care here. */ |
252b5132 | 11348 | coproc = 1; |
df58fc94 | 11349 | goto ld_st; |
252b5132 RH |
11350 | case M_LDC2_AB: |
11351 | s = "ldc2"; | |
df58fc94 | 11352 | fmt = COP12_FMT; |
7361da2c AB |
11353 | offbits = (mips_opts.micromips ? 12 |
11354 | : ISA_IS_R6 (mips_opts.isa) ? 11 | |
11355 | : 16); | |
bdaaa2e1 | 11356 | /* Itbl support may require additional care here. */ |
252b5132 | 11357 | coproc = 1; |
df58fc94 | 11358 | goto ld_st; |
c77c0862 | 11359 | case M_LQC2_AB: |
c77c0862 | 11360 | s = "lqc2"; |
14daeee3 | 11361 | fmt = "+7,o(b)"; |
c77c0862 RS |
11362 | /* Itbl support may require additional care here. */ |
11363 | coproc = 1; | |
11364 | goto ld_st; | |
252b5132 RH |
11365 | case M_LDC3_AB: |
11366 | s = "ldc3"; | |
df58fc94 | 11367 | fmt = "E,o(b)"; |
bdaaa2e1 | 11368 | /* Itbl support may require additional care here. */ |
252b5132 | 11369 | coproc = 1; |
df58fc94 | 11370 | goto ld_st; |
252b5132 RH |
11371 | case M_LDL_AB: |
11372 | s = "ldl"; | |
df58fc94 | 11373 | fmt = MEM12_FMT; |
7f3c4072 | 11374 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 11375 | goto ld_st; |
252b5132 RH |
11376 | case M_LDR_AB: |
11377 | s = "ldr"; | |
df58fc94 | 11378 | fmt = MEM12_FMT; |
7f3c4072 | 11379 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 11380 | goto ld_st; |
252b5132 RH |
11381 | case M_LL_AB: |
11382 | s = "ll"; | |
7361da2c AB |
11383 | fmt = LL_SC_FMT; |
11384 | offbits = (mips_opts.micromips ? 12 | |
11385 | : ISA_IS_R6 (mips_opts.isa) ? 9 | |
11386 | : 16); | |
252b5132 RH |
11387 | goto ld; |
11388 | case M_LLD_AB: | |
11389 | s = "lld"; | |
7361da2c AB |
11390 | fmt = LL_SC_FMT; |
11391 | offbits = (mips_opts.micromips ? 12 | |
11392 | : ISA_IS_R6 (mips_opts.isa) ? 9 | |
11393 | : 16); | |
252b5132 RH |
11394 | goto ld; |
11395 | case M_LWU_AB: | |
11396 | s = "lwu"; | |
df58fc94 | 11397 | fmt = MEM12_FMT; |
7f3c4072 | 11398 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
11399 | goto ld; |
11400 | case M_LWP_AB: | |
df58fc94 RS |
11401 | gas_assert (mips_opts.micromips); |
11402 | s = "lwp"; | |
11403 | fmt = "t,~(b)"; | |
7f3c4072 | 11404 | offbits = 12; |
df58fc94 RS |
11405 | lp = 1; |
11406 | goto ld; | |
11407 | case M_LDP_AB: | |
df58fc94 RS |
11408 | gas_assert (mips_opts.micromips); |
11409 | s = "ldp"; | |
11410 | fmt = "t,~(b)"; | |
7f3c4072 | 11411 | offbits = 12; |
df58fc94 RS |
11412 | lp = 1; |
11413 | goto ld; | |
11414 | case M_LWM_AB: | |
df58fc94 RS |
11415 | gas_assert (mips_opts.micromips); |
11416 | s = "lwm"; | |
11417 | fmt = "n,~(b)"; | |
7f3c4072 | 11418 | offbits = 12; |
df58fc94 RS |
11419 | goto ld_st; |
11420 | case M_LDM_AB: | |
df58fc94 RS |
11421 | gas_assert (mips_opts.micromips); |
11422 | s = "ldm"; | |
11423 | fmt = "n,~(b)"; | |
7f3c4072 | 11424 | offbits = 12; |
df58fc94 RS |
11425 | goto ld_st; |
11426 | ||
252b5132 | 11427 | ld: |
f19ccbda | 11428 | /* We don't want to use $0 as tempreg. */ |
c0ebe874 | 11429 | if (op[2] == op[0] + lp || op[0] + lp == ZERO) |
df58fc94 | 11430 | goto ld_st; |
252b5132 | 11431 | else |
c0ebe874 | 11432 | tempreg = op[0] + lp; |
df58fc94 RS |
11433 | goto ld_noat; |
11434 | ||
252b5132 RH |
11435 | case M_SB_AB: |
11436 | s = "sb"; | |
df58fc94 RS |
11437 | fmt = "t,o(b)"; |
11438 | goto ld_st; | |
252b5132 RH |
11439 | case M_SH_AB: |
11440 | s = "sh"; | |
df58fc94 RS |
11441 | fmt = "t,o(b)"; |
11442 | goto ld_st; | |
252b5132 RH |
11443 | case M_SW_AB: |
11444 | s = "sw"; | |
df58fc94 RS |
11445 | fmt = "t,o(b)"; |
11446 | goto ld_st; | |
252b5132 | 11447 | case M_SWC0_AB: |
df58fc94 | 11448 | gas_assert (!mips_opts.micromips); |
252b5132 | 11449 | s = "swc0"; |
df58fc94 | 11450 | fmt = "E,o(b)"; |
bdaaa2e1 | 11451 | /* Itbl support may require additional care here. */ |
252b5132 | 11452 | coproc = 1; |
df58fc94 | 11453 | goto ld_st; |
252b5132 RH |
11454 | case M_SWC1_AB: |
11455 | s = "swc1"; | |
df58fc94 | 11456 | fmt = "T,o(b)"; |
bdaaa2e1 | 11457 | /* Itbl support may require additional care here. */ |
252b5132 | 11458 | coproc = 1; |
df58fc94 | 11459 | goto ld_st; |
252b5132 RH |
11460 | case M_SWC2_AB: |
11461 | s = "swc2"; | |
df58fc94 | 11462 | fmt = COP12_FMT; |
7361da2c AB |
11463 | offbits = (mips_opts.micromips ? 12 |
11464 | : ISA_IS_R6 (mips_opts.isa) ? 11 | |
11465 | : 16); | |
bdaaa2e1 | 11466 | /* Itbl support may require additional care here. */ |
252b5132 | 11467 | coproc = 1; |
df58fc94 | 11468 | goto ld_st; |
252b5132 | 11469 | case M_SWC3_AB: |
df58fc94 | 11470 | gas_assert (!mips_opts.micromips); |
252b5132 | 11471 | s = "swc3"; |
df58fc94 | 11472 | fmt = "E,o(b)"; |
bdaaa2e1 | 11473 | /* Itbl support may require additional care here. */ |
252b5132 | 11474 | coproc = 1; |
df58fc94 | 11475 | goto ld_st; |
252b5132 RH |
11476 | case M_SWL_AB: |
11477 | s = "swl"; | |
df58fc94 | 11478 | fmt = MEM12_FMT; |
7f3c4072 | 11479 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 11480 | goto ld_st; |
252b5132 RH |
11481 | case M_SWR_AB: |
11482 | s = "swr"; | |
df58fc94 | 11483 | fmt = MEM12_FMT; |
7f3c4072 | 11484 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 11485 | goto ld_st; |
252b5132 RH |
11486 | case M_SC_AB: |
11487 | s = "sc"; | |
7361da2c AB |
11488 | fmt = LL_SC_FMT; |
11489 | offbits = (mips_opts.micromips ? 12 | |
11490 | : ISA_IS_R6 (mips_opts.isa) ? 9 | |
11491 | : 16); | |
df58fc94 | 11492 | goto ld_st; |
252b5132 RH |
11493 | case M_SCD_AB: |
11494 | s = "scd"; | |
7361da2c AB |
11495 | fmt = LL_SC_FMT; |
11496 | offbits = (mips_opts.micromips ? 12 | |
11497 | : ISA_IS_R6 (mips_opts.isa) ? 9 | |
11498 | : 16); | |
df58fc94 | 11499 | goto ld_st; |
d43b4baf TS |
11500 | case M_CACHE_AB: |
11501 | s = "cache"; | |
7361da2c AB |
11502 | fmt = (mips_opts.micromips ? "k,~(b)" |
11503 | : ISA_IS_R6 (mips_opts.isa) ? "k,+j(b)" | |
11504 | : "k,o(b)"); | |
11505 | offbits = (mips_opts.micromips ? 12 | |
11506 | : ISA_IS_R6 (mips_opts.isa) ? 9 | |
11507 | : 16); | |
7f3c4072 CM |
11508 | goto ld_st; |
11509 | case M_CACHEE_AB: | |
7f3c4072 CM |
11510 | s = "cachee"; |
11511 | fmt = "k,+j(b)"; | |
11512 | offbits = 9; | |
df58fc94 | 11513 | goto ld_st; |
3eebd5eb MR |
11514 | case M_PREF_AB: |
11515 | s = "pref"; | |
7361da2c AB |
11516 | fmt = (mips_opts.micromips ? "k,~(b)" |
11517 | : ISA_IS_R6 (mips_opts.isa) ? "k,+j(b)" | |
11518 | : "k,o(b)"); | |
11519 | offbits = (mips_opts.micromips ? 12 | |
11520 | : ISA_IS_R6 (mips_opts.isa) ? 9 | |
11521 | : 16); | |
7f3c4072 CM |
11522 | goto ld_st; |
11523 | case M_PREFE_AB: | |
7f3c4072 CM |
11524 | s = "prefe"; |
11525 | fmt = "k,+j(b)"; | |
11526 | offbits = 9; | |
df58fc94 | 11527 | goto ld_st; |
252b5132 | 11528 | case M_SDC1_AB: |
252b5132 | 11529 | s = "sdc1"; |
df58fc94 | 11530 | fmt = "T,o(b)"; |
252b5132 | 11531 | coproc = 1; |
bdaaa2e1 | 11532 | /* Itbl support may require additional care here. */ |
df58fc94 | 11533 | goto ld_st; |
252b5132 RH |
11534 | case M_SDC2_AB: |
11535 | s = "sdc2"; | |
df58fc94 | 11536 | fmt = COP12_FMT; |
7361da2c AB |
11537 | offbits = (mips_opts.micromips ? 12 |
11538 | : ISA_IS_R6 (mips_opts.isa) ? 11 | |
11539 | : 16); | |
c77c0862 RS |
11540 | /* Itbl support may require additional care here. */ |
11541 | coproc = 1; | |
11542 | goto ld_st; | |
11543 | case M_SQC2_AB: | |
c77c0862 | 11544 | s = "sqc2"; |
14daeee3 | 11545 | fmt = "+7,o(b)"; |
bdaaa2e1 | 11546 | /* Itbl support may require additional care here. */ |
252b5132 | 11547 | coproc = 1; |
df58fc94 | 11548 | goto ld_st; |
252b5132 | 11549 | case M_SDC3_AB: |
df58fc94 | 11550 | gas_assert (!mips_opts.micromips); |
252b5132 | 11551 | s = "sdc3"; |
df58fc94 | 11552 | fmt = "E,o(b)"; |
bdaaa2e1 | 11553 | /* Itbl support may require additional care here. */ |
252b5132 | 11554 | coproc = 1; |
df58fc94 | 11555 | goto ld_st; |
252b5132 RH |
11556 | case M_SDL_AB: |
11557 | s = "sdl"; | |
df58fc94 | 11558 | fmt = MEM12_FMT; |
7f3c4072 | 11559 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 11560 | goto ld_st; |
252b5132 RH |
11561 | case M_SDR_AB: |
11562 | s = "sdr"; | |
df58fc94 | 11563 | fmt = MEM12_FMT; |
7f3c4072 | 11564 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
11565 | goto ld_st; |
11566 | case M_SWP_AB: | |
df58fc94 RS |
11567 | gas_assert (mips_opts.micromips); |
11568 | s = "swp"; | |
11569 | fmt = "t,~(b)"; | |
7f3c4072 | 11570 | offbits = 12; |
df58fc94 RS |
11571 | goto ld_st; |
11572 | case M_SDP_AB: | |
df58fc94 RS |
11573 | gas_assert (mips_opts.micromips); |
11574 | s = "sdp"; | |
11575 | fmt = "t,~(b)"; | |
7f3c4072 | 11576 | offbits = 12; |
df58fc94 RS |
11577 | goto ld_st; |
11578 | case M_SWM_AB: | |
df58fc94 RS |
11579 | gas_assert (mips_opts.micromips); |
11580 | s = "swm"; | |
11581 | fmt = "n,~(b)"; | |
7f3c4072 | 11582 | offbits = 12; |
df58fc94 RS |
11583 | goto ld_st; |
11584 | case M_SDM_AB: | |
df58fc94 RS |
11585 | gas_assert (mips_opts.micromips); |
11586 | s = "sdm"; | |
11587 | fmt = "n,~(b)"; | |
7f3c4072 | 11588 | offbits = 12; |
df58fc94 RS |
11589 | |
11590 | ld_st: | |
8fc2e39e | 11591 | tempreg = AT; |
df58fc94 | 11592 | ld_noat: |
c0ebe874 | 11593 | breg = op[2]; |
f2ae14a1 RS |
11594 | if (small_offset_p (0, align, 16)) |
11595 | { | |
11596 | /* The first case exists for M_LD_AB and M_SD_AB, which are | |
11597 | macros for o32 but which should act like normal instructions | |
11598 | otherwise. */ | |
11599 | if (offbits == 16) | |
c0ebe874 | 11600 | macro_build (&offset_expr, s, fmt, op[0], -1, offset_reloc[0], |
f2ae14a1 RS |
11601 | offset_reloc[1], offset_reloc[2], breg); |
11602 | else if (small_offset_p (0, align, offbits)) | |
11603 | { | |
11604 | if (offbits == 0) | |
c0ebe874 | 11605 | macro_build (NULL, s, fmt, op[0], breg); |
f2ae14a1 | 11606 | else |
c0ebe874 | 11607 | macro_build (NULL, s, fmt, op[0], |
c8276761 | 11608 | (int) offset_expr.X_add_number, breg); |
f2ae14a1 RS |
11609 | } |
11610 | else | |
11611 | { | |
11612 | if (tempreg == AT) | |
11613 | used_at = 1; | |
11614 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
11615 | tempreg, breg, -1, offset_reloc[0], | |
11616 | offset_reloc[1], offset_reloc[2]); | |
11617 | if (offbits == 0) | |
c0ebe874 | 11618 | macro_build (NULL, s, fmt, op[0], tempreg); |
f2ae14a1 | 11619 | else |
c0ebe874 | 11620 | macro_build (NULL, s, fmt, op[0], 0, tempreg); |
f2ae14a1 RS |
11621 | } |
11622 | break; | |
11623 | } | |
11624 | ||
11625 | if (tempreg == AT) | |
11626 | used_at = 1; | |
11627 | ||
252b5132 RH |
11628 | if (offset_expr.X_op != O_constant |
11629 | && offset_expr.X_op != O_symbol) | |
11630 | { | |
1661c76c | 11631 | as_bad (_("expression too complex")); |
252b5132 RH |
11632 | offset_expr.X_op = O_constant; |
11633 | } | |
11634 | ||
2051e8c4 MR |
11635 | if (HAVE_32BIT_ADDRESSES |
11636 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
11637 | { |
11638 | char value [32]; | |
11639 | ||
11640 | sprintf_vma (value, offset_expr.X_add_number); | |
1661c76c | 11641 | as_bad (_("number (0x%s) larger than 32 bits"), value); |
55e08f71 | 11642 | } |
2051e8c4 | 11643 | |
252b5132 RH |
11644 | /* A constant expression in PIC code can be handled just as it |
11645 | is in non PIC code. */ | |
aed1a261 RS |
11646 | if (offset_expr.X_op == O_constant) |
11647 | { | |
f2ae14a1 RS |
11648 | expr1.X_add_number = offset_high_part (offset_expr.X_add_number, |
11649 | offbits == 0 ? 16 : offbits); | |
11650 | offset_expr.X_add_number -= expr1.X_add_number; | |
df58fc94 | 11651 | |
f2ae14a1 RS |
11652 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
11653 | if (breg != 0) | |
11654 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
11655 | tempreg, tempreg, breg); | |
7f3c4072 | 11656 | if (offbits == 0) |
dd6a37e7 | 11657 | { |
f2ae14a1 | 11658 | if (offset_expr.X_add_number != 0) |
dd6a37e7 | 11659 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
f2ae14a1 | 11660 | "t,r,j", tempreg, tempreg, BFD_RELOC_LO16); |
c0ebe874 | 11661 | macro_build (NULL, s, fmt, op[0], tempreg); |
dd6a37e7 | 11662 | } |
7f3c4072 | 11663 | else if (offbits == 16) |
c0ebe874 | 11664 | macro_build (&offset_expr, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
df58fc94 | 11665 | else |
c0ebe874 | 11666 | macro_build (NULL, s, fmt, op[0], |
c8276761 | 11667 | (int) offset_expr.X_add_number, tempreg); |
df58fc94 | 11668 | } |
7f3c4072 | 11669 | else if (offbits != 16) |
df58fc94 | 11670 | { |
7f3c4072 CM |
11671 | /* The offset field is too narrow to be used for a low-part |
11672 | relocation, so load the whole address into the auxillary | |
f2ae14a1 RS |
11673 | register. */ |
11674 | load_address (tempreg, &offset_expr, &used_at); | |
11675 | if (breg != 0) | |
11676 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
11677 | tempreg, tempreg, breg); | |
7f3c4072 | 11678 | if (offbits == 0) |
c0ebe874 | 11679 | macro_build (NULL, s, fmt, op[0], tempreg); |
dd6a37e7 | 11680 | else |
c0ebe874 | 11681 | macro_build (NULL, s, fmt, op[0], 0, tempreg); |
aed1a261 RS |
11682 | } |
11683 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
11684 | { |
11685 | /* If this is a reference to a GP relative symbol, and there | |
11686 | is no base register, we want | |
c0ebe874 | 11687 | <op> op[0],<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
11688 | Otherwise, if there is no base register, we want |
11689 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
c0ebe874 | 11690 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
252b5132 RH |
11691 | If we have a constant, we need two instructions anyhow, |
11692 | so we always use the latter form. | |
11693 | ||
11694 | If we have a base register, and this is a reference to a | |
11695 | GP relative symbol, we want | |
11696 | addu $tempreg,$breg,$gp | |
c0ebe874 | 11697 | <op> op[0],<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
11698 | Otherwise we want |
11699 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
11700 | addu $tempreg,$tempreg,$breg | |
c0ebe874 | 11701 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 | 11702 | With a constant we always use the latter case. |
76b3015f | 11703 | |
d6bc6245 TS |
11704 | With 64bit address space and no base register and $at usable, |
11705 | we want | |
11706 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11707 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
11708 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11709 | dsll32 $tempreg,0 | |
11710 | daddu $tempreg,$at | |
c0ebe874 | 11711 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 TS |
11712 | If we have a base register, we want |
11713 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11714 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
11715 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11716 | daddu $at,$breg | |
11717 | dsll32 $tempreg,0 | |
11718 | daddu $tempreg,$at | |
c0ebe874 | 11719 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 TS |
11720 | |
11721 | Without $at we can't generate the optimal path for superscalar | |
11722 | processors here since this would require two temporary registers. | |
11723 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11724 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11725 | dsll $tempreg,16 | |
11726 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
11727 | dsll $tempreg,16 | |
c0ebe874 | 11728 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 TS |
11729 | If we have a base register, we want |
11730 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11731 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11732 | dsll $tempreg,16 | |
11733 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
11734 | dsll $tempreg,16 | |
11735 | daddu $tempreg,$tempreg,$breg | |
c0ebe874 | 11736 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
6373ee54 | 11737 | |
6caf9ef4 | 11738 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
11739 | the same sequence as in 32bit address space. */ |
11740 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 11741 | { |
aed1a261 | 11742 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
11743 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
11744 | { | |
11745 | relax_start (offset_expr.X_add_symbol); | |
11746 | if (breg == 0) | |
11747 | { | |
c0ebe874 | 11748 | macro_build (&offset_expr, s, fmt, op[0], |
6caf9ef4 TS |
11749 | BFD_RELOC_GPREL16, mips_gp_register); |
11750 | } | |
11751 | else | |
11752 | { | |
11753 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
11754 | tempreg, breg, mips_gp_register); | |
c0ebe874 | 11755 | macro_build (&offset_expr, s, fmt, op[0], |
6caf9ef4 TS |
11756 | BFD_RELOC_GPREL16, tempreg); |
11757 | } | |
11758 | relax_switch (); | |
11759 | } | |
d6bc6245 | 11760 | |
741fe287 | 11761 | if (used_at == 0 && mips_opts.at) |
d6bc6245 | 11762 | { |
df58fc94 | 11763 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb | 11764 | BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 11765 | macro_build (&offset_expr, "lui", LUI_FMT, AT, |
67c0d1eb RS |
11766 | BFD_RELOC_HI16_S); |
11767 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
11768 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 11769 | if (breg != 0) |
67c0d1eb | 11770 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
df58fc94 | 11771 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb | 11772 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
c0ebe874 | 11773 | macro_build (&offset_expr, s, fmt, op[0], BFD_RELOC_LO16, |
67c0d1eb | 11774 | tempreg); |
d6bc6245 TS |
11775 | used_at = 1; |
11776 | } | |
11777 | else | |
11778 | { | |
df58fc94 | 11779 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb RS |
11780 | BFD_RELOC_MIPS_HIGHEST); |
11781 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
11782 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 11783 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb RS |
11784 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, |
11785 | tempreg, BFD_RELOC_HI16_S); | |
df58fc94 | 11786 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
d6bc6245 | 11787 | if (breg != 0) |
67c0d1eb | 11788 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 11789 | tempreg, tempreg, breg); |
c0ebe874 | 11790 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11791 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 11792 | } |
6caf9ef4 TS |
11793 | |
11794 | if (mips_relax.sequence) | |
11795 | relax_end (); | |
8fc2e39e | 11796 | break; |
d6bc6245 | 11797 | } |
256ab948 | 11798 | |
252b5132 RH |
11799 | if (breg == 0) |
11800 | { | |
67c0d1eb | 11801 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 11802 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 11803 | { |
4d7206a2 | 11804 | relax_start (offset_expr.X_add_symbol); |
c0ebe874 | 11805 | macro_build (&offset_expr, s, fmt, op[0], BFD_RELOC_GPREL16, |
67c0d1eb | 11806 | mips_gp_register); |
4d7206a2 | 11807 | relax_switch (); |
252b5132 | 11808 | } |
67c0d1eb | 11809 | macro_build_lui (&offset_expr, tempreg); |
c0ebe874 | 11810 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11811 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
11812 | if (mips_relax.sequence) |
11813 | relax_end (); | |
252b5132 RH |
11814 | } |
11815 | else | |
11816 | { | |
67c0d1eb | 11817 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 11818 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 11819 | { |
4d7206a2 | 11820 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 11821 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11822 | tempreg, breg, mips_gp_register); |
c0ebe874 | 11823 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11824 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 11825 | relax_switch (); |
252b5132 | 11826 | } |
67c0d1eb RS |
11827 | macro_build_lui (&offset_expr, tempreg); |
11828 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 11829 | tempreg, tempreg, breg); |
c0ebe874 | 11830 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11831 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
11832 | if (mips_relax.sequence) |
11833 | relax_end (); | |
252b5132 RH |
11834 | } |
11835 | } | |
0a44bf69 | 11836 | else if (!mips_big_got) |
252b5132 | 11837 | { |
ed6fb7bd | 11838 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 11839 | |
252b5132 RH |
11840 | /* If this is a reference to an external symbol, we want |
11841 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11842 | nop | |
c0ebe874 | 11843 | <op> op[0],0($tempreg) |
252b5132 RH |
11844 | Otherwise we want |
11845 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11846 | nop | |
11847 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
c0ebe874 | 11848 | <op> op[0],0($tempreg) |
f5040a92 AO |
11849 | |
11850 | For NewABI, we want | |
11851 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
c0ebe874 | 11852 | <op> op[0],<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) |
f5040a92 | 11853 | |
252b5132 RH |
11854 | If there is a base register, we add it to $tempreg before |
11855 | the <op>. If there is a constant, we stick it in the | |
11856 | <op> instruction. We don't handle constants larger than | |
11857 | 16 bits, because we have no way to load the upper 16 bits | |
11858 | (actually, we could handle them for the subset of cases | |
11859 | in which we are not using $at). */ | |
9c2799c2 | 11860 | gas_assert (offset_expr.X_op == O_symbol); |
f5040a92 AO |
11861 | if (HAVE_NEWABI) |
11862 | { | |
67c0d1eb RS |
11863 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
11864 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 11865 | if (breg != 0) |
67c0d1eb | 11866 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11867 | tempreg, tempreg, breg); |
c0ebe874 | 11868 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11869 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
11870 | break; |
11871 | } | |
252b5132 RH |
11872 | expr1.X_add_number = offset_expr.X_add_number; |
11873 | offset_expr.X_add_number = 0; | |
11874 | if (expr1.X_add_number < -0x8000 | |
11875 | || expr1.X_add_number >= 0x8000) | |
11876 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
11877 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
11878 | lw_reloc_type, mips_gp_register); | |
269137b2 | 11879 | load_delay_nop (); |
4d7206a2 RS |
11880 | relax_start (offset_expr.X_add_symbol); |
11881 | relax_switch (); | |
67c0d1eb RS |
11882 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
11883 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 11884 | relax_end (); |
252b5132 | 11885 | if (breg != 0) |
67c0d1eb | 11886 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11887 | tempreg, tempreg, breg); |
c0ebe874 | 11888 | macro_build (&expr1, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
252b5132 | 11889 | } |
0a44bf69 | 11890 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 11891 | { |
67c0d1eb | 11892 | int gpdelay; |
252b5132 RH |
11893 | |
11894 | /* If this is a reference to an external symbol, we want | |
11895 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
11896 | addu $tempreg,$tempreg,$gp | |
11897 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
c0ebe874 | 11898 | <op> op[0],0($tempreg) |
252b5132 RH |
11899 | Otherwise we want |
11900 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11901 | nop | |
11902 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
c0ebe874 | 11903 | <op> op[0],0($tempreg) |
252b5132 RH |
11904 | If there is a base register, we add it to $tempreg before |
11905 | the <op>. If there is a constant, we stick it in the | |
11906 | <op> instruction. We don't handle constants larger than | |
11907 | 16 bits, because we have no way to load the upper 16 bits | |
11908 | (actually, we could handle them for the subset of cases | |
f5040a92 | 11909 | in which we are not using $at). */ |
9c2799c2 | 11910 | gas_assert (offset_expr.X_op == O_symbol); |
252b5132 RH |
11911 | expr1.X_add_number = offset_expr.X_add_number; |
11912 | offset_expr.X_add_number = 0; | |
11913 | if (expr1.X_add_number < -0x8000 | |
11914 | || expr1.X_add_number >= 0x8000) | |
11915 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 11916 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 11917 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 11918 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 11919 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
11920 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
11921 | mips_gp_register); | |
11922 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
11923 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 11924 | relax_switch (); |
67c0d1eb RS |
11925 | if (gpdelay) |
11926 | macro_build (NULL, "nop", ""); | |
11927 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
11928 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 11929 | load_delay_nop (); |
67c0d1eb RS |
11930 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
11931 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
11932 | relax_end (); |
11933 | ||
252b5132 | 11934 | if (breg != 0) |
67c0d1eb | 11935 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11936 | tempreg, tempreg, breg); |
c0ebe874 | 11937 | macro_build (&expr1, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
252b5132 | 11938 | } |
0a44bf69 | 11939 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 11940 | { |
f5040a92 AO |
11941 | /* If this is a reference to an external symbol, we want |
11942 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
11943 | add $tempreg,$tempreg,$gp | |
11944 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
c0ebe874 | 11945 | <op> op[0],<ofst>($tempreg) |
f5040a92 AO |
11946 | Otherwise, for local symbols, we want: |
11947 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
c0ebe874 | 11948 | <op> op[0],<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ |
9c2799c2 | 11949 | gas_assert (offset_expr.X_op == O_symbol); |
4d7206a2 | 11950 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
11951 | offset_expr.X_add_number = 0; |
11952 | if (expr1.X_add_number < -0x8000 | |
11953 | || expr1.X_add_number >= 0x8000) | |
11954 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 11955 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 11956 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 11957 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
11958 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
11959 | mips_gp_register); | |
11960 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
11961 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 11962 | if (breg != 0) |
67c0d1eb | 11963 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11964 | tempreg, tempreg, breg); |
c0ebe874 | 11965 | macro_build (&expr1, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
684022ea | 11966 | |
4d7206a2 | 11967 | relax_switch (); |
f5040a92 | 11968 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
11969 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
11970 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 11971 | if (breg != 0) |
67c0d1eb | 11972 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11973 | tempreg, tempreg, breg); |
c0ebe874 | 11974 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11975 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 11976 | relax_end (); |
f5040a92 | 11977 | } |
252b5132 RH |
11978 | else |
11979 | abort (); | |
11980 | ||
252b5132 RH |
11981 | break; |
11982 | ||
833794fc MR |
11983 | case M_JRADDIUSP: |
11984 | gas_assert (mips_opts.micromips); | |
11985 | gas_assert (mips_opts.insn32); | |
11986 | start_noreorder (); | |
11987 | macro_build (NULL, "jr", "s", RA); | |
c0ebe874 | 11988 | expr1.X_add_number = op[0] << 2; |
833794fc MR |
11989 | macro_build (&expr1, "addiu", "t,r,j", SP, SP, BFD_RELOC_LO16); |
11990 | end_noreorder (); | |
11991 | break; | |
11992 | ||
11993 | case M_JRC: | |
11994 | gas_assert (mips_opts.micromips); | |
11995 | gas_assert (mips_opts.insn32); | |
c0ebe874 | 11996 | macro_build (NULL, "jr", "s", op[0]); |
833794fc MR |
11997 | if (mips_opts.noreorder) |
11998 | macro_build (NULL, "nop", ""); | |
11999 | break; | |
12000 | ||
252b5132 RH |
12001 | case M_LI: |
12002 | case M_LI_S: | |
c0ebe874 | 12003 | load_register (op[0], &imm_expr, 0); |
8fc2e39e | 12004 | break; |
252b5132 RH |
12005 | |
12006 | case M_DLI: | |
c0ebe874 | 12007 | load_register (op[0], &imm_expr, 1); |
8fc2e39e | 12008 | break; |
252b5132 RH |
12009 | |
12010 | case M_LI_SS: | |
12011 | if (imm_expr.X_op == O_constant) | |
12012 | { | |
8fc2e39e | 12013 | used_at = 1; |
67c0d1eb | 12014 | load_register (AT, &imm_expr, 0); |
c0ebe874 | 12015 | macro_build (NULL, "mtc1", "t,G", AT, op[0]); |
252b5132 RH |
12016 | break; |
12017 | } | |
12018 | else | |
12019 | { | |
b0e6f033 RS |
12020 | gas_assert (imm_expr.X_op == O_absent |
12021 | && offset_expr.X_op == O_symbol | |
90ecf173 MR |
12022 | && strcmp (segment_name (S_GET_SEGMENT |
12023 | (offset_expr.X_add_symbol)), | |
12024 | ".lit4") == 0 | |
12025 | && offset_expr.X_add_number == 0); | |
c0ebe874 | 12026 | macro_build (&offset_expr, "lwc1", "T,o(b)", op[0], |
17a2f251 | 12027 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 12028 | break; |
252b5132 RH |
12029 | } |
12030 | ||
12031 | case M_LI_D: | |
ca4e0257 RS |
12032 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
12033 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
12034 | order 32 bits of the value and the low order 32 bits are either | |
12035 | zero or in OFFSET_EXPR. */ | |
b0e6f033 | 12036 | if (imm_expr.X_op == O_constant) |
252b5132 | 12037 | { |
bad1aba3 | 12038 | if (GPR_SIZE == 64) |
c0ebe874 | 12039 | load_register (op[0], &imm_expr, 1); |
252b5132 RH |
12040 | else |
12041 | { | |
12042 | int hreg, lreg; | |
12043 | ||
12044 | if (target_big_endian) | |
12045 | { | |
c0ebe874 RS |
12046 | hreg = op[0]; |
12047 | lreg = op[0] + 1; | |
252b5132 RH |
12048 | } |
12049 | else | |
12050 | { | |
c0ebe874 RS |
12051 | hreg = op[0] + 1; |
12052 | lreg = op[0]; | |
252b5132 RH |
12053 | } |
12054 | ||
12055 | if (hreg <= 31) | |
67c0d1eb | 12056 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
12057 | if (lreg <= 31) |
12058 | { | |
12059 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 12060 | move_register (lreg, 0); |
252b5132 RH |
12061 | else |
12062 | { | |
9c2799c2 | 12063 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 12064 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
12065 | } |
12066 | } | |
12067 | } | |
8fc2e39e | 12068 | break; |
252b5132 | 12069 | } |
b0e6f033 | 12070 | gas_assert (imm_expr.X_op == O_absent); |
252b5132 RH |
12071 | |
12072 | /* We know that sym is in the .rdata section. First we get the | |
12073 | upper 16 bits of the address. */ | |
12074 | if (mips_pic == NO_PIC) | |
12075 | { | |
67c0d1eb | 12076 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 12077 | used_at = 1; |
252b5132 | 12078 | } |
0a44bf69 | 12079 | else |
252b5132 | 12080 | { |
67c0d1eb RS |
12081 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
12082 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 12083 | used_at = 1; |
252b5132 | 12084 | } |
bdaaa2e1 | 12085 | |
252b5132 | 12086 | /* Now we load the register(s). */ |
bad1aba3 | 12087 | if (GPR_SIZE == 64) |
8fc2e39e TS |
12088 | { |
12089 | used_at = 1; | |
c0ebe874 RS |
12090 | macro_build (&offset_expr, "ld", "t,o(b)", op[0], |
12091 | BFD_RELOC_LO16, AT); | |
8fc2e39e | 12092 | } |
252b5132 RH |
12093 | else |
12094 | { | |
8fc2e39e | 12095 | used_at = 1; |
c0ebe874 RS |
12096 | macro_build (&offset_expr, "lw", "t,o(b)", op[0], |
12097 | BFD_RELOC_LO16, AT); | |
12098 | if (op[0] != RA) | |
252b5132 RH |
12099 | { |
12100 | /* FIXME: How in the world do we deal with the possible | |
12101 | overflow here? */ | |
12102 | offset_expr.X_add_number += 4; | |
67c0d1eb | 12103 | macro_build (&offset_expr, "lw", "t,o(b)", |
c0ebe874 | 12104 | op[0] + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
12105 | } |
12106 | } | |
252b5132 RH |
12107 | break; |
12108 | ||
12109 | case M_LI_DD: | |
ca4e0257 RS |
12110 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
12111 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
12112 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
12113 | the value and the low order 32 bits are either zero or in | |
12114 | OFFSET_EXPR. */ | |
b0e6f033 | 12115 | if (imm_expr.X_op == O_constant) |
252b5132 | 12116 | { |
8fc2e39e | 12117 | used_at = 1; |
bad1aba3 | 12118 | load_register (AT, &imm_expr, FPR_SIZE == 64); |
351cdf24 MF |
12119 | if (FPR_SIZE == 64 && GPR_SIZE == 64) |
12120 | macro_build (NULL, "dmtc1", "t,S", AT, op[0]); | |
252b5132 RH |
12121 | else |
12122 | { | |
351cdf24 MF |
12123 | if (ISA_HAS_MXHC1 (mips_opts.isa)) |
12124 | macro_build (NULL, "mthc1", "t,G", AT, op[0]); | |
12125 | else if (FPR_SIZE != 32) | |
12126 | as_bad (_("Unable to generate `%s' compliant code " | |
12127 | "without mthc1"), | |
12128 | (FPR_SIZE == 64) ? "fp64" : "fpxx"); | |
12129 | else | |
12130 | macro_build (NULL, "mtc1", "t,G", AT, op[0] + 1); | |
252b5132 | 12131 | if (offset_expr.X_op == O_absent) |
c0ebe874 | 12132 | macro_build (NULL, "mtc1", "t,G", 0, op[0]); |
252b5132 RH |
12133 | else |
12134 | { | |
9c2799c2 | 12135 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 12136 | load_register (AT, &offset_expr, 0); |
c0ebe874 | 12137 | macro_build (NULL, "mtc1", "t,G", AT, op[0]); |
252b5132 RH |
12138 | } |
12139 | } | |
12140 | break; | |
12141 | } | |
12142 | ||
b0e6f033 RS |
12143 | gas_assert (imm_expr.X_op == O_absent |
12144 | && offset_expr.X_op == O_symbol | |
90ecf173 | 12145 | && offset_expr.X_add_number == 0); |
252b5132 RH |
12146 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); |
12147 | if (strcmp (s, ".lit8") == 0) | |
f2ae14a1 | 12148 | { |
c0ebe874 | 12149 | op[2] = mips_gp_register; |
f2ae14a1 RS |
12150 | offset_reloc[0] = BFD_RELOC_MIPS_LITERAL; |
12151 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
12152 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
12153 | } |
12154 | else | |
12155 | { | |
9c2799c2 | 12156 | gas_assert (strcmp (s, RDATA_SECTION_NAME) == 0); |
8fc2e39e | 12157 | used_at = 1; |
0a44bf69 | 12158 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
12159 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
12160 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
12161 | else |
12162 | { | |
12163 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 12164 | macro_build_lui (&offset_expr, AT); |
252b5132 | 12165 | } |
bdaaa2e1 | 12166 | |
c0ebe874 | 12167 | op[2] = AT; |
f2ae14a1 RS |
12168 | offset_reloc[0] = BFD_RELOC_LO16; |
12169 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
12170 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
12171 | } | |
12172 | align = 8; | |
12173 | /* Fall through */ | |
c4a68bea | 12174 | |
252b5132 RH |
12175 | case M_L_DAB: |
12176 | /* | |
12177 | * The MIPS assembler seems to check for X_add_number not | |
12178 | * being double aligned and generating: | |
12179 | * lui at,%hi(foo+1) | |
12180 | * addu at,at,v1 | |
12181 | * addiu at,at,%lo(foo+1) | |
12182 | * lwc1 f2,0(at) | |
12183 | * lwc1 f3,4(at) | |
12184 | * But, the resulting address is the same after relocation so why | |
12185 | * generate the extra instruction? | |
12186 | */ | |
bdaaa2e1 | 12187 | /* Itbl support may require additional care here. */ |
252b5132 | 12188 | coproc = 1; |
df58fc94 | 12189 | fmt = "T,o(b)"; |
0aa27725 | 12190 | if (CPU_HAS_LDC1_SDC1 (mips_opts.arch)) |
252b5132 RH |
12191 | { |
12192 | s = "ldc1"; | |
df58fc94 | 12193 | goto ld_st; |
252b5132 | 12194 | } |
252b5132 | 12195 | s = "lwc1"; |
252b5132 RH |
12196 | goto ldd_std; |
12197 | ||
12198 | case M_S_DAB: | |
df58fc94 RS |
12199 | gas_assert (!mips_opts.micromips); |
12200 | /* Itbl support may require additional care here. */ | |
12201 | coproc = 1; | |
12202 | fmt = "T,o(b)"; | |
0aa27725 | 12203 | if (CPU_HAS_LDC1_SDC1 (mips_opts.arch)) |
252b5132 RH |
12204 | { |
12205 | s = "sdc1"; | |
df58fc94 | 12206 | goto ld_st; |
252b5132 | 12207 | } |
252b5132 | 12208 | s = "swc1"; |
252b5132 RH |
12209 | goto ldd_std; |
12210 | ||
e407c74b NC |
12211 | case M_LQ_AB: |
12212 | fmt = "t,o(b)"; | |
12213 | s = "lq"; | |
12214 | goto ld; | |
12215 | ||
12216 | case M_SQ_AB: | |
12217 | fmt = "t,o(b)"; | |
12218 | s = "sq"; | |
12219 | goto ld_st; | |
12220 | ||
252b5132 | 12221 | case M_LD_AB: |
df58fc94 | 12222 | fmt = "t,o(b)"; |
bad1aba3 | 12223 | if (GPR_SIZE == 64) |
252b5132 RH |
12224 | { |
12225 | s = "ld"; | |
12226 | goto ld; | |
12227 | } | |
252b5132 | 12228 | s = "lw"; |
252b5132 RH |
12229 | goto ldd_std; |
12230 | ||
12231 | case M_SD_AB: | |
df58fc94 | 12232 | fmt = "t,o(b)"; |
bad1aba3 | 12233 | if (GPR_SIZE == 64) |
252b5132 RH |
12234 | { |
12235 | s = "sd"; | |
df58fc94 | 12236 | goto ld_st; |
252b5132 | 12237 | } |
252b5132 | 12238 | s = "sw"; |
252b5132 RH |
12239 | |
12240 | ldd_std: | |
f2ae14a1 RS |
12241 | /* Even on a big endian machine $fn comes before $fn+1. We have |
12242 | to adjust when loading from memory. We set coproc if we must | |
12243 | load $fn+1 first. */ | |
12244 | /* Itbl support may require additional care here. */ | |
12245 | if (!target_big_endian) | |
12246 | coproc = 0; | |
12247 | ||
c0ebe874 | 12248 | breg = op[2]; |
f2ae14a1 RS |
12249 | if (small_offset_p (0, align, 16)) |
12250 | { | |
12251 | ep = &offset_expr; | |
12252 | if (!small_offset_p (4, align, 16)) | |
12253 | { | |
12254 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", AT, breg, | |
12255 | -1, offset_reloc[0], offset_reloc[1], | |
12256 | offset_reloc[2]); | |
12257 | expr1.X_add_number = 0; | |
12258 | ep = &expr1; | |
12259 | breg = AT; | |
12260 | used_at = 1; | |
12261 | offset_reloc[0] = BFD_RELOC_LO16; | |
12262 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
12263 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
12264 | } | |
c0ebe874 | 12265 | if (strcmp (s, "lw") == 0 && op[0] == breg) |
f2ae14a1 RS |
12266 | { |
12267 | ep->X_add_number += 4; | |
c0ebe874 | 12268 | macro_build (ep, s, fmt, op[0] + 1, -1, offset_reloc[0], |
f2ae14a1 RS |
12269 | offset_reloc[1], offset_reloc[2], breg); |
12270 | ep->X_add_number -= 4; | |
c0ebe874 | 12271 | macro_build (ep, s, fmt, op[0], -1, offset_reloc[0], |
f2ae14a1 RS |
12272 | offset_reloc[1], offset_reloc[2], breg); |
12273 | } | |
12274 | else | |
12275 | { | |
c0ebe874 | 12276 | macro_build (ep, s, fmt, coproc ? op[0] + 1 : op[0], -1, |
f2ae14a1 RS |
12277 | offset_reloc[0], offset_reloc[1], offset_reloc[2], |
12278 | breg); | |
12279 | ep->X_add_number += 4; | |
c0ebe874 | 12280 | macro_build (ep, s, fmt, coproc ? op[0] : op[0] + 1, -1, |
f2ae14a1 RS |
12281 | offset_reloc[0], offset_reloc[1], offset_reloc[2], |
12282 | breg); | |
12283 | } | |
12284 | break; | |
12285 | } | |
12286 | ||
252b5132 RH |
12287 | if (offset_expr.X_op != O_symbol |
12288 | && offset_expr.X_op != O_constant) | |
12289 | { | |
1661c76c | 12290 | as_bad (_("expression too complex")); |
252b5132 RH |
12291 | offset_expr.X_op = O_constant; |
12292 | } | |
12293 | ||
2051e8c4 MR |
12294 | if (HAVE_32BIT_ADDRESSES |
12295 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
12296 | { |
12297 | char value [32]; | |
12298 | ||
12299 | sprintf_vma (value, offset_expr.X_add_number); | |
1661c76c | 12300 | as_bad (_("number (0x%s) larger than 32 bits"), value); |
55e08f71 | 12301 | } |
2051e8c4 | 12302 | |
90ecf173 | 12303 | if (mips_pic == NO_PIC || offset_expr.X_op == O_constant) |
252b5132 RH |
12304 | { |
12305 | /* If this is a reference to a GP relative symbol, we want | |
c0ebe874 RS |
12306 | <op> op[0],<sym>($gp) (BFD_RELOC_GPREL16) |
12307 | <op> op[0]+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
12308 | If we have a base register, we use this |
12309 | addu $at,$breg,$gp | |
c0ebe874 RS |
12310 | <op> op[0],<sym>($at) (BFD_RELOC_GPREL16) |
12311 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
12312 | If this is not a GP relative symbol, we want |
12313 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
c0ebe874 RS |
12314 | <op> op[0],<sym>($at) (BFD_RELOC_LO16) |
12315 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_LO16) | |
252b5132 RH |
12316 | If there is a base register, we add it to $at after the |
12317 | lui instruction. If there is a constant, we always use | |
12318 | the last case. */ | |
39a59cf8 MR |
12319 | if (offset_expr.X_op == O_symbol |
12320 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 12321 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 12322 | { |
4d7206a2 | 12323 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
12324 | if (breg == 0) |
12325 | { | |
c9914766 | 12326 | tempreg = mips_gp_register; |
252b5132 RH |
12327 | } |
12328 | else | |
12329 | { | |
67c0d1eb | 12330 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 12331 | AT, breg, mips_gp_register); |
252b5132 | 12332 | tempreg = AT; |
252b5132 RH |
12333 | used_at = 1; |
12334 | } | |
12335 | ||
beae10d5 | 12336 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12337 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
17a2f251 | 12338 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
12339 | offset_expr.X_add_number += 4; |
12340 | ||
12341 | /* Set mips_optimize to 2 to avoid inserting an | |
12342 | undesired nop. */ | |
12343 | hold_mips_optimize = mips_optimize; | |
12344 | mips_optimize = 2; | |
beae10d5 | 12345 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12346 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
17a2f251 | 12347 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
12348 | mips_optimize = hold_mips_optimize; |
12349 | ||
4d7206a2 | 12350 | relax_switch (); |
252b5132 | 12351 | |
0970e49e | 12352 | offset_expr.X_add_number -= 4; |
252b5132 | 12353 | } |
8fc2e39e | 12354 | used_at = 1; |
f2ae14a1 RS |
12355 | if (offset_high_part (offset_expr.X_add_number, 16) |
12356 | != offset_high_part (offset_expr.X_add_number + 4, 16)) | |
12357 | { | |
12358 | load_address (AT, &offset_expr, &used_at); | |
12359 | offset_expr.X_op = O_constant; | |
12360 | offset_expr.X_add_number = 0; | |
12361 | } | |
12362 | else | |
12363 | macro_build_lui (&offset_expr, AT); | |
252b5132 | 12364 | if (breg != 0) |
67c0d1eb | 12365 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 12366 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12367 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
17a2f251 | 12368 | BFD_RELOC_LO16, AT); |
252b5132 RH |
12369 | /* FIXME: How do we handle overflow here? */ |
12370 | offset_expr.X_add_number += 4; | |
beae10d5 | 12371 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12372 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
17a2f251 | 12373 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
12374 | if (mips_relax.sequence) |
12375 | relax_end (); | |
bdaaa2e1 | 12376 | } |
0a44bf69 | 12377 | else if (!mips_big_got) |
252b5132 | 12378 | { |
252b5132 RH |
12379 | /* If this is a reference to an external symbol, we want |
12380 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
12381 | nop | |
c0ebe874 RS |
12382 | <op> op[0],0($at) |
12383 | <op> op[0]+1,4($at) | |
252b5132 RH |
12384 | Otherwise we want |
12385 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
12386 | nop | |
c0ebe874 RS |
12387 | <op> op[0],<sym>($at) (BFD_RELOC_LO16) |
12388 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_LO16) | |
252b5132 RH |
12389 | If there is a base register we add it to $at before the |
12390 | lwc1 instructions. If there is a constant we include it | |
12391 | in the lwc1 instructions. */ | |
12392 | used_at = 1; | |
12393 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
12394 | if (expr1.X_add_number < -0x8000 |
12395 | || expr1.X_add_number >= 0x8000 - 4) | |
12396 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 12397 | load_got_offset (AT, &offset_expr); |
269137b2 | 12398 | load_delay_nop (); |
252b5132 | 12399 | if (breg != 0) |
67c0d1eb | 12400 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
12401 | |
12402 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
12403 | nop. */ | |
12404 | hold_mips_optimize = mips_optimize; | |
12405 | mips_optimize = 2; | |
4d7206a2 | 12406 | |
beae10d5 | 12407 | /* Itbl support may require additional care here. */ |
4d7206a2 | 12408 | relax_start (offset_expr.X_add_symbol); |
c0ebe874 | 12409 | macro_build (&expr1, s, fmt, coproc ? op[0] + 1 : op[0], |
67c0d1eb | 12410 | BFD_RELOC_LO16, AT); |
4d7206a2 | 12411 | expr1.X_add_number += 4; |
c0ebe874 | 12412 | macro_build (&expr1, s, fmt, coproc ? op[0] : op[0] + 1, |
67c0d1eb | 12413 | BFD_RELOC_LO16, AT); |
4d7206a2 | 12414 | relax_switch (); |
c0ebe874 | 12415 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
67c0d1eb | 12416 | BFD_RELOC_LO16, AT); |
4d7206a2 | 12417 | offset_expr.X_add_number += 4; |
c0ebe874 | 12418 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
67c0d1eb | 12419 | BFD_RELOC_LO16, AT); |
4d7206a2 | 12420 | relax_end (); |
252b5132 | 12421 | |
4d7206a2 | 12422 | mips_optimize = hold_mips_optimize; |
252b5132 | 12423 | } |
0a44bf69 | 12424 | else if (mips_big_got) |
252b5132 | 12425 | { |
67c0d1eb | 12426 | int gpdelay; |
252b5132 RH |
12427 | |
12428 | /* If this is a reference to an external symbol, we want | |
12429 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
12430 | addu $at,$at,$gp | |
12431 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
12432 | nop | |
c0ebe874 RS |
12433 | <op> op[0],0($at) |
12434 | <op> op[0]+1,4($at) | |
252b5132 RH |
12435 | Otherwise we want |
12436 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
12437 | nop | |
c0ebe874 RS |
12438 | <op> op[0],<sym>($at) (BFD_RELOC_LO16) |
12439 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_LO16) | |
252b5132 RH |
12440 | If there is a base register we add it to $at before the |
12441 | lwc1 instructions. If there is a constant we include it | |
12442 | in the lwc1 instructions. */ | |
12443 | used_at = 1; | |
12444 | expr1.X_add_number = offset_expr.X_add_number; | |
12445 | offset_expr.X_add_number = 0; | |
12446 | if (expr1.X_add_number < -0x8000 | |
12447 | || expr1.X_add_number >= 0x8000 - 4) | |
12448 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 12449 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 12450 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 12451 | macro_build (&offset_expr, "lui", LUI_FMT, |
67c0d1eb RS |
12452 | AT, BFD_RELOC_MIPS_GOT_HI16); |
12453 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 12454 | AT, AT, mips_gp_register); |
67c0d1eb | 12455 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 12456 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 12457 | load_delay_nop (); |
252b5132 | 12458 | if (breg != 0) |
67c0d1eb | 12459 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 12460 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12461 | macro_build (&expr1, s, fmt, coproc ? op[0] + 1 : op[0], |
17a2f251 | 12462 | BFD_RELOC_LO16, AT); |
252b5132 RH |
12463 | expr1.X_add_number += 4; |
12464 | ||
12465 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
12466 | nop. */ | |
12467 | hold_mips_optimize = mips_optimize; | |
12468 | mips_optimize = 2; | |
beae10d5 | 12469 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12470 | macro_build (&expr1, s, fmt, coproc ? op[0] : op[0] + 1, |
17a2f251 | 12471 | BFD_RELOC_LO16, AT); |
252b5132 RH |
12472 | mips_optimize = hold_mips_optimize; |
12473 | expr1.X_add_number -= 4; | |
12474 | ||
4d7206a2 RS |
12475 | relax_switch (); |
12476 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
12477 | if (gpdelay) |
12478 | macro_build (NULL, "nop", ""); | |
12479 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
12480 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 12481 | load_delay_nop (); |
252b5132 | 12482 | if (breg != 0) |
67c0d1eb | 12483 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 12484 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12485 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
67c0d1eb | 12486 | BFD_RELOC_LO16, AT); |
4d7206a2 | 12487 | offset_expr.X_add_number += 4; |
252b5132 RH |
12488 | |
12489 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
12490 | nop. */ | |
12491 | hold_mips_optimize = mips_optimize; | |
12492 | mips_optimize = 2; | |
beae10d5 | 12493 | /* Itbl support may require additional care here. */ |
c0ebe874 | 12494 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
67c0d1eb | 12495 | BFD_RELOC_LO16, AT); |
252b5132 | 12496 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 12497 | relax_end (); |
252b5132 | 12498 | } |
252b5132 RH |
12499 | else |
12500 | abort (); | |
12501 | ||
252b5132 | 12502 | break; |
3739860c | 12503 | |
dd6a37e7 | 12504 | case M_SAA_AB: |
dd6a37e7 | 12505 | s = "saa"; |
0db377d0 | 12506 | goto saa_saad; |
dd6a37e7 | 12507 | case M_SAAD_AB: |
dd6a37e7 | 12508 | s = "saad"; |
0db377d0 MR |
12509 | saa_saad: |
12510 | gas_assert (!mips_opts.micromips); | |
7f3c4072 | 12511 | offbits = 0; |
dd6a37e7 AP |
12512 | fmt = "t,(b)"; |
12513 | goto ld_st; | |
12514 | ||
252b5132 RH |
12515 | /* New code added to support COPZ instructions. |
12516 | This code builds table entries out of the macros in mip_opcodes. | |
12517 | R4000 uses interlocks to handle coproc delays. | |
12518 | Other chips (like the R3000) require nops to be inserted for delays. | |
12519 | ||
f72c8c98 | 12520 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
12521 | In order to fill delay slots for non-interlocked chips, |
12522 | we must have a way to specify delays based on the coprocessor. | |
12523 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
12524 | What are the side-effects of the cop instruction? | |
12525 | What cache support might we have and what are its effects? | |
12526 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 12527 | What registers are read/set/modified? |
252b5132 RH |
12528 | |
12529 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 12530 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
12531 | |
12532 | case M_COP0: | |
12533 | s = "c0"; | |
12534 | goto copz; | |
12535 | case M_COP1: | |
12536 | s = "c1"; | |
12537 | goto copz; | |
12538 | case M_COP2: | |
12539 | s = "c2"; | |
12540 | goto copz; | |
12541 | case M_COP3: | |
12542 | s = "c3"; | |
12543 | copz: | |
df58fc94 | 12544 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
12545 | /* For now we just do C (same as Cz). The parameter will be |
12546 | stored in insn_opcode by mips_ip. */ | |
c8276761 | 12547 | macro_build (NULL, s, "C", (int) ip->insn_opcode); |
8fc2e39e | 12548 | break; |
252b5132 | 12549 | |
ea1fb5dc | 12550 | case M_MOVE: |
c0ebe874 | 12551 | move_register (op[0], op[1]); |
8fc2e39e | 12552 | break; |
ea1fb5dc | 12553 | |
833794fc MR |
12554 | case M_MOVEP: |
12555 | gas_assert (mips_opts.micromips); | |
12556 | gas_assert (mips_opts.insn32); | |
c0ebe874 RS |
12557 | move_register (micromips_to_32_reg_h_map1[op[0]], |
12558 | micromips_to_32_reg_m_map[op[1]]); | |
12559 | move_register (micromips_to_32_reg_h_map2[op[0]], | |
12560 | micromips_to_32_reg_n_map[op[2]]); | |
833794fc MR |
12561 | break; |
12562 | ||
252b5132 RH |
12563 | case M_DMUL: |
12564 | dbl = 1; | |
12565 | case M_MUL: | |
e407c74b | 12566 | if (mips_opts.arch == CPU_R5900) |
c0ebe874 RS |
12567 | macro_build (NULL, dbl ? "dmultu" : "multu", "d,s,t", op[0], op[1], |
12568 | op[2]); | |
e407c74b NC |
12569 | else |
12570 | { | |
c0ebe874 RS |
12571 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", op[1], op[2]); |
12572 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); | |
e407c74b | 12573 | } |
8fc2e39e | 12574 | break; |
252b5132 RH |
12575 | |
12576 | case M_DMUL_I: | |
12577 | dbl = 1; | |
12578 | case M_MUL_I: | |
12579 | /* The MIPS assembler some times generates shifts and adds. I'm | |
12580 | not trying to be that fancy. GCC should do this for us | |
12581 | anyway. */ | |
8fc2e39e | 12582 | used_at = 1; |
67c0d1eb | 12583 | load_register (AT, &imm_expr, dbl); |
c0ebe874 RS |
12584 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", op[1], AT); |
12585 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); | |
252b5132 RH |
12586 | break; |
12587 | ||
12588 | case M_DMULO_I: | |
12589 | dbl = 1; | |
12590 | case M_MULO_I: | |
12591 | imm = 1; | |
12592 | goto do_mulo; | |
12593 | ||
12594 | case M_DMULO: | |
12595 | dbl = 1; | |
12596 | case M_MULO: | |
12597 | do_mulo: | |
7d10b47d | 12598 | start_noreorder (); |
8fc2e39e | 12599 | used_at = 1; |
252b5132 | 12600 | if (imm) |
67c0d1eb | 12601 | load_register (AT, &imm_expr, dbl); |
c0ebe874 RS |
12602 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", |
12603 | op[1], imm ? AT : op[2]); | |
12604 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); | |
12605 | macro_build (NULL, dbl ? "dsra32" : "sra", SHFT_FMT, op[0], op[0], 31); | |
df58fc94 | 12606 | macro_build (NULL, "mfhi", MFHL_FMT, AT); |
252b5132 | 12607 | if (mips_trap) |
c0ebe874 | 12608 | macro_build (NULL, "tne", TRAP_FMT, op[0], AT, 6); |
252b5132 RH |
12609 | else |
12610 | { | |
df58fc94 RS |
12611 | if (mips_opts.micromips) |
12612 | micromips_label_expr (&label_expr); | |
12613 | else | |
12614 | label_expr.X_add_number = 8; | |
c0ebe874 | 12615 | macro_build (&label_expr, "beq", "s,t,p", op[0], AT); |
a605d2b3 | 12616 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
12617 | macro_build (NULL, "break", BRK_FMT, 6); |
12618 | if (mips_opts.micromips) | |
12619 | micromips_add_label (); | |
252b5132 | 12620 | } |
7d10b47d | 12621 | end_noreorder (); |
c0ebe874 | 12622 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); |
252b5132 RH |
12623 | break; |
12624 | ||
12625 | case M_DMULOU_I: | |
12626 | dbl = 1; | |
12627 | case M_MULOU_I: | |
12628 | imm = 1; | |
12629 | goto do_mulou; | |
12630 | ||
12631 | case M_DMULOU: | |
12632 | dbl = 1; | |
12633 | case M_MULOU: | |
12634 | do_mulou: | |
7d10b47d | 12635 | start_noreorder (); |
8fc2e39e | 12636 | used_at = 1; |
252b5132 | 12637 | if (imm) |
67c0d1eb RS |
12638 | load_register (AT, &imm_expr, dbl); |
12639 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
c0ebe874 | 12640 | op[1], imm ? AT : op[2]); |
df58fc94 | 12641 | macro_build (NULL, "mfhi", MFHL_FMT, AT); |
c0ebe874 | 12642 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); |
252b5132 | 12643 | if (mips_trap) |
df58fc94 | 12644 | macro_build (NULL, "tne", TRAP_FMT, AT, ZERO, 6); |
252b5132 RH |
12645 | else |
12646 | { | |
df58fc94 RS |
12647 | if (mips_opts.micromips) |
12648 | micromips_label_expr (&label_expr); | |
12649 | else | |
12650 | label_expr.X_add_number = 8; | |
12651 | macro_build (&label_expr, "beq", "s,t,p", AT, ZERO); | |
a605d2b3 | 12652 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
12653 | macro_build (NULL, "break", BRK_FMT, 6); |
12654 | if (mips_opts.micromips) | |
12655 | micromips_add_label (); | |
252b5132 | 12656 | } |
7d10b47d | 12657 | end_noreorder (); |
252b5132 RH |
12658 | break; |
12659 | ||
771c7ce4 | 12660 | case M_DROL: |
fef14a42 | 12661 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 12662 | { |
c0ebe874 | 12663 | if (op[0] == op[1]) |
82dd0097 CD |
12664 | { |
12665 | tempreg = AT; | |
12666 | used_at = 1; | |
12667 | } | |
12668 | else | |
c0ebe874 RS |
12669 | tempreg = op[0]; |
12670 | macro_build (NULL, "dnegu", "d,w", tempreg, op[2]); | |
12671 | macro_build (NULL, "drorv", "d,t,s", op[0], op[1], tempreg); | |
8fc2e39e | 12672 | break; |
82dd0097 | 12673 | } |
8fc2e39e | 12674 | used_at = 1; |
c0ebe874 RS |
12675 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, op[2]); |
12676 | macro_build (NULL, "dsrlv", "d,t,s", AT, op[1], AT); | |
12677 | macro_build (NULL, "dsllv", "d,t,s", op[0], op[1], op[2]); | |
12678 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12679 | break; |
12680 | ||
252b5132 | 12681 | case M_ROL: |
fef14a42 | 12682 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 12683 | { |
c0ebe874 | 12684 | if (op[0] == op[1]) |
82dd0097 CD |
12685 | { |
12686 | tempreg = AT; | |
12687 | used_at = 1; | |
12688 | } | |
12689 | else | |
c0ebe874 RS |
12690 | tempreg = op[0]; |
12691 | macro_build (NULL, "negu", "d,w", tempreg, op[2]); | |
12692 | macro_build (NULL, "rorv", "d,t,s", op[0], op[1], tempreg); | |
8fc2e39e | 12693 | break; |
82dd0097 | 12694 | } |
8fc2e39e | 12695 | used_at = 1; |
c0ebe874 RS |
12696 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, op[2]); |
12697 | macro_build (NULL, "srlv", "d,t,s", AT, op[1], AT); | |
12698 | macro_build (NULL, "sllv", "d,t,s", op[0], op[1], op[2]); | |
12699 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
252b5132 RH |
12700 | break; |
12701 | ||
771c7ce4 TS |
12702 | case M_DROL_I: |
12703 | { | |
12704 | unsigned int rot; | |
e0471c16 TS |
12705 | const char *l; |
12706 | const char *rr; | |
771c7ce4 | 12707 | |
771c7ce4 | 12708 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 12709 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
12710 | { |
12711 | rot = (64 - rot) & 0x3f; | |
12712 | if (rot >= 32) | |
c0ebe874 | 12713 | macro_build (NULL, "dror32", SHFT_FMT, op[0], op[1], rot - 32); |
60b63b72 | 12714 | else |
c0ebe874 | 12715 | macro_build (NULL, "dror", SHFT_FMT, op[0], op[1], rot); |
8fc2e39e | 12716 | break; |
60b63b72 | 12717 | } |
483fc7cd | 12718 | if (rot == 0) |
483fc7cd | 12719 | { |
c0ebe874 | 12720 | macro_build (NULL, "dsrl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12721 | break; |
483fc7cd | 12722 | } |
82dd0097 | 12723 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
91d6fa6a | 12724 | rr = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 | 12725 | rot &= 0x1f; |
8fc2e39e | 12726 | used_at = 1; |
c0ebe874 RS |
12727 | macro_build (NULL, l, SHFT_FMT, AT, op[1], rot); |
12728 | macro_build (NULL, rr, SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12729 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12730 | } |
12731 | break; | |
12732 | ||
252b5132 | 12733 | case M_ROL_I: |
771c7ce4 TS |
12734 | { |
12735 | unsigned int rot; | |
12736 | ||
771c7ce4 | 12737 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 12738 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 12739 | { |
c0ebe874 RS |
12740 | macro_build (NULL, "ror", SHFT_FMT, op[0], op[1], |
12741 | (32 - rot) & 0x1f); | |
8fc2e39e | 12742 | break; |
60b63b72 | 12743 | } |
483fc7cd | 12744 | if (rot == 0) |
483fc7cd | 12745 | { |
c0ebe874 | 12746 | macro_build (NULL, "srl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12747 | break; |
483fc7cd | 12748 | } |
8fc2e39e | 12749 | used_at = 1; |
c0ebe874 RS |
12750 | macro_build (NULL, "sll", SHFT_FMT, AT, op[1], rot); |
12751 | macro_build (NULL, "srl", SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12752 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12753 | } |
12754 | break; | |
12755 | ||
12756 | case M_DROR: | |
fef14a42 | 12757 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 12758 | { |
c0ebe874 | 12759 | macro_build (NULL, "drorv", "d,t,s", op[0], op[1], op[2]); |
8fc2e39e | 12760 | break; |
82dd0097 | 12761 | } |
8fc2e39e | 12762 | used_at = 1; |
c0ebe874 RS |
12763 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, op[2]); |
12764 | macro_build (NULL, "dsllv", "d,t,s", AT, op[1], AT); | |
12765 | macro_build (NULL, "dsrlv", "d,t,s", op[0], op[1], op[2]); | |
12766 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
252b5132 RH |
12767 | break; |
12768 | ||
12769 | case M_ROR: | |
fef14a42 | 12770 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 12771 | { |
c0ebe874 | 12772 | macro_build (NULL, "rorv", "d,t,s", op[0], op[1], op[2]); |
8fc2e39e | 12773 | break; |
82dd0097 | 12774 | } |
8fc2e39e | 12775 | used_at = 1; |
c0ebe874 RS |
12776 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, op[2]); |
12777 | macro_build (NULL, "sllv", "d,t,s", AT, op[1], AT); | |
12778 | macro_build (NULL, "srlv", "d,t,s", op[0], op[1], op[2]); | |
12779 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
252b5132 RH |
12780 | break; |
12781 | ||
771c7ce4 TS |
12782 | case M_DROR_I: |
12783 | { | |
12784 | unsigned int rot; | |
e0471c16 TS |
12785 | const char *l; |
12786 | const char *rr; | |
771c7ce4 | 12787 | |
771c7ce4 | 12788 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 12789 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
12790 | { |
12791 | if (rot >= 32) | |
c0ebe874 | 12792 | macro_build (NULL, "dror32", SHFT_FMT, op[0], op[1], rot - 32); |
82dd0097 | 12793 | else |
c0ebe874 | 12794 | macro_build (NULL, "dror", SHFT_FMT, op[0], op[1], rot); |
8fc2e39e | 12795 | break; |
82dd0097 | 12796 | } |
483fc7cd | 12797 | if (rot == 0) |
483fc7cd | 12798 | { |
c0ebe874 | 12799 | macro_build (NULL, "dsrl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12800 | break; |
483fc7cd | 12801 | } |
91d6fa6a | 12802 | rr = (rot < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 CD |
12803 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; |
12804 | rot &= 0x1f; | |
8fc2e39e | 12805 | used_at = 1; |
c0ebe874 RS |
12806 | macro_build (NULL, rr, SHFT_FMT, AT, op[1], rot); |
12807 | macro_build (NULL, l, SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12808 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12809 | } |
12810 | break; | |
12811 | ||
252b5132 | 12812 | case M_ROR_I: |
771c7ce4 TS |
12813 | { |
12814 | unsigned int rot; | |
12815 | ||
771c7ce4 | 12816 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 12817 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 12818 | { |
c0ebe874 | 12819 | macro_build (NULL, "ror", SHFT_FMT, op[0], op[1], rot); |
8fc2e39e | 12820 | break; |
82dd0097 | 12821 | } |
483fc7cd | 12822 | if (rot == 0) |
483fc7cd | 12823 | { |
c0ebe874 | 12824 | macro_build (NULL, "srl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12825 | break; |
483fc7cd | 12826 | } |
8fc2e39e | 12827 | used_at = 1; |
c0ebe874 RS |
12828 | macro_build (NULL, "srl", SHFT_FMT, AT, op[1], rot); |
12829 | macro_build (NULL, "sll", SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12830 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 | 12831 | } |
252b5132 RH |
12832 | break; |
12833 | ||
252b5132 | 12834 | case M_SEQ: |
c0ebe874 RS |
12835 | if (op[1] == 0) |
12836 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[2], BFD_RELOC_LO16); | |
12837 | else if (op[2] == 0) | |
12838 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[1], BFD_RELOC_LO16); | |
252b5132 RH |
12839 | else |
12840 | { | |
c0ebe874 RS |
12841 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], op[2]); |
12842 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[0], BFD_RELOC_LO16); | |
252b5132 | 12843 | } |
8fc2e39e | 12844 | break; |
252b5132 RH |
12845 | |
12846 | case M_SEQ_I: | |
b0e6f033 | 12847 | if (imm_expr.X_add_number == 0) |
252b5132 | 12848 | { |
c0ebe874 | 12849 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
8fc2e39e | 12850 | break; |
252b5132 | 12851 | } |
c0ebe874 | 12852 | if (op[1] == 0) |
252b5132 | 12853 | { |
1661c76c | 12854 | as_warn (_("instruction %s: result is always false"), |
252b5132 | 12855 | ip->insn_mo->name); |
c0ebe874 | 12856 | move_register (op[0], 0); |
8fc2e39e | 12857 | break; |
252b5132 | 12858 | } |
dd3cbb7e NC |
12859 | if (CPU_HAS_SEQ (mips_opts.arch) |
12860 | && -512 <= imm_expr.X_add_number | |
12861 | && imm_expr.X_add_number < 512) | |
12862 | { | |
c0ebe874 | 12863 | macro_build (NULL, "seqi", "t,r,+Q", op[0], op[1], |
750bdd57 | 12864 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
12865 | break; |
12866 | } | |
b0e6f033 | 12867 | if (imm_expr.X_add_number >= 0 |
252b5132 | 12868 | && imm_expr.X_add_number < 0x10000) |
c0ebe874 | 12869 | macro_build (&imm_expr, "xori", "t,r,i", op[0], op[1], BFD_RELOC_LO16); |
b0e6f033 | 12870 | else if (imm_expr.X_add_number > -0x8000 |
252b5132 RH |
12871 | && imm_expr.X_add_number < 0) |
12872 | { | |
12873 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
bad1aba3 | 12874 | macro_build (&imm_expr, GPR_SIZE == 32 ? "addiu" : "daddiu", |
c0ebe874 | 12875 | "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
252b5132 | 12876 | } |
dd3cbb7e NC |
12877 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
12878 | { | |
12879 | used_at = 1; | |
bad1aba3 | 12880 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 12881 | macro_build (NULL, "seq", "d,v,t", op[0], op[1], AT); |
dd3cbb7e NC |
12882 | break; |
12883 | } | |
252b5132 RH |
12884 | else |
12885 | { | |
bad1aba3 | 12886 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 12887 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12888 | used_at = 1; |
12889 | } | |
c0ebe874 | 12890 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[0], BFD_RELOC_LO16); |
8fc2e39e | 12891 | break; |
252b5132 | 12892 | |
c0ebe874 | 12893 | case M_SGE: /* X >= Y <==> not (X < Y) */ |
252b5132 RH |
12894 | s = "slt"; |
12895 | goto sge; | |
12896 | case M_SGEU: | |
12897 | s = "sltu"; | |
12898 | sge: | |
c0ebe874 RS |
12899 | macro_build (NULL, s, "d,v,t", op[0], op[1], op[2]); |
12900 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); | |
8fc2e39e | 12901 | break; |
252b5132 | 12902 | |
c0ebe874 | 12903 | case M_SGE_I: /* X >= I <==> not (X < I) */ |
252b5132 | 12904 | case M_SGEU_I: |
b0e6f033 | 12905 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 | 12906 | && imm_expr.X_add_number < 0x8000) |
c0ebe874 RS |
12907 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
12908 | op[0], op[1], BFD_RELOC_LO16); | |
252b5132 RH |
12909 | else |
12910 | { | |
bad1aba3 | 12911 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
67c0d1eb | 12912 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", |
c0ebe874 | 12913 | op[0], op[1], AT); |
252b5132 RH |
12914 | used_at = 1; |
12915 | } | |
c0ebe874 | 12916 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); |
8fc2e39e | 12917 | break; |
252b5132 | 12918 | |
c0ebe874 | 12919 | case M_SGT: /* X > Y <==> Y < X */ |
252b5132 RH |
12920 | s = "slt"; |
12921 | goto sgt; | |
12922 | case M_SGTU: | |
12923 | s = "sltu"; | |
12924 | sgt: | |
c0ebe874 | 12925 | macro_build (NULL, s, "d,v,t", op[0], op[2], op[1]); |
8fc2e39e | 12926 | break; |
252b5132 | 12927 | |
c0ebe874 | 12928 | case M_SGT_I: /* X > I <==> I < X */ |
252b5132 RH |
12929 | s = "slt"; |
12930 | goto sgti; | |
12931 | case M_SGTU_I: | |
12932 | s = "sltu"; | |
12933 | sgti: | |
8fc2e39e | 12934 | used_at = 1; |
bad1aba3 | 12935 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 12936 | macro_build (NULL, s, "d,v,t", op[0], AT, op[1]); |
252b5132 RH |
12937 | break; |
12938 | ||
c0ebe874 | 12939 | case M_SLE: /* X <= Y <==> Y >= X <==> not (Y < X) */ |
252b5132 RH |
12940 | s = "slt"; |
12941 | goto sle; | |
12942 | case M_SLEU: | |
12943 | s = "sltu"; | |
12944 | sle: | |
c0ebe874 RS |
12945 | macro_build (NULL, s, "d,v,t", op[0], op[2], op[1]); |
12946 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); | |
8fc2e39e | 12947 | break; |
252b5132 | 12948 | |
c0ebe874 | 12949 | case M_SLE_I: /* X <= I <==> I >= X <==> not (I < X) */ |
252b5132 RH |
12950 | s = "slt"; |
12951 | goto slei; | |
12952 | case M_SLEU_I: | |
12953 | s = "sltu"; | |
12954 | slei: | |
8fc2e39e | 12955 | used_at = 1; |
bad1aba3 | 12956 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 RS |
12957 | macro_build (NULL, s, "d,v,t", op[0], AT, op[1]); |
12958 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); | |
252b5132 RH |
12959 | break; |
12960 | ||
12961 | case M_SLT_I: | |
b0e6f033 | 12962 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 RH |
12963 | && imm_expr.X_add_number < 0x8000) |
12964 | { | |
c0ebe874 RS |
12965 | macro_build (&imm_expr, "slti", "t,r,j", op[0], op[1], |
12966 | BFD_RELOC_LO16); | |
8fc2e39e | 12967 | break; |
252b5132 | 12968 | } |
8fc2e39e | 12969 | used_at = 1; |
bad1aba3 | 12970 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 12971 | macro_build (NULL, "slt", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12972 | break; |
12973 | ||
12974 | case M_SLTU_I: | |
b0e6f033 | 12975 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 RH |
12976 | && imm_expr.X_add_number < 0x8000) |
12977 | { | |
c0ebe874 | 12978 | macro_build (&imm_expr, "sltiu", "t,r,j", op[0], op[1], |
17a2f251 | 12979 | BFD_RELOC_LO16); |
8fc2e39e | 12980 | break; |
252b5132 | 12981 | } |
8fc2e39e | 12982 | used_at = 1; |
bad1aba3 | 12983 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 12984 | macro_build (NULL, "sltu", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12985 | break; |
12986 | ||
12987 | case M_SNE: | |
c0ebe874 RS |
12988 | if (op[1] == 0) |
12989 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[2]); | |
12990 | else if (op[2] == 0) | |
12991 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[1]); | |
252b5132 RH |
12992 | else |
12993 | { | |
c0ebe874 RS |
12994 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], op[2]); |
12995 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[0]); | |
252b5132 | 12996 | } |
8fc2e39e | 12997 | break; |
252b5132 RH |
12998 | |
12999 | case M_SNE_I: | |
b0e6f033 | 13000 | if (imm_expr.X_add_number == 0) |
252b5132 | 13001 | { |
c0ebe874 | 13002 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[1]); |
8fc2e39e | 13003 | break; |
252b5132 | 13004 | } |
c0ebe874 | 13005 | if (op[1] == 0) |
252b5132 | 13006 | { |
1661c76c | 13007 | as_warn (_("instruction %s: result is always true"), |
252b5132 | 13008 | ip->insn_mo->name); |
bad1aba3 | 13009 | macro_build (&expr1, GPR_SIZE == 32 ? "addiu" : "daddiu", "t,r,j", |
c0ebe874 | 13010 | op[0], 0, BFD_RELOC_LO16); |
8fc2e39e | 13011 | break; |
252b5132 | 13012 | } |
dd3cbb7e NC |
13013 | if (CPU_HAS_SEQ (mips_opts.arch) |
13014 | && -512 <= imm_expr.X_add_number | |
13015 | && imm_expr.X_add_number < 512) | |
13016 | { | |
c0ebe874 | 13017 | macro_build (NULL, "snei", "t,r,+Q", op[0], op[1], |
750bdd57 | 13018 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
13019 | break; |
13020 | } | |
b0e6f033 | 13021 | if (imm_expr.X_add_number >= 0 |
252b5132 RH |
13022 | && imm_expr.X_add_number < 0x10000) |
13023 | { | |
c0ebe874 RS |
13024 | macro_build (&imm_expr, "xori", "t,r,i", op[0], op[1], |
13025 | BFD_RELOC_LO16); | |
252b5132 | 13026 | } |
b0e6f033 | 13027 | else if (imm_expr.X_add_number > -0x8000 |
252b5132 RH |
13028 | && imm_expr.X_add_number < 0) |
13029 | { | |
13030 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
bad1aba3 | 13031 | macro_build (&imm_expr, GPR_SIZE == 32 ? "addiu" : "daddiu", |
c0ebe874 | 13032 | "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
252b5132 | 13033 | } |
dd3cbb7e NC |
13034 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
13035 | { | |
13036 | used_at = 1; | |
bad1aba3 | 13037 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 13038 | macro_build (NULL, "sne", "d,v,t", op[0], op[1], AT); |
dd3cbb7e NC |
13039 | break; |
13040 | } | |
252b5132 RH |
13041 | else |
13042 | { | |
bad1aba3 | 13043 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 13044 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
13045 | used_at = 1; |
13046 | } | |
c0ebe874 | 13047 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[0]); |
8fc2e39e | 13048 | break; |
252b5132 | 13049 | |
df58fc94 RS |
13050 | case M_SUB_I: |
13051 | s = "addi"; | |
13052 | s2 = "sub"; | |
13053 | goto do_subi; | |
13054 | case M_SUBU_I: | |
13055 | s = "addiu"; | |
13056 | s2 = "subu"; | |
13057 | goto do_subi; | |
252b5132 RH |
13058 | case M_DSUB_I: |
13059 | dbl = 1; | |
df58fc94 RS |
13060 | s = "daddi"; |
13061 | s2 = "dsub"; | |
13062 | if (!mips_opts.micromips) | |
13063 | goto do_subi; | |
b0e6f033 | 13064 | if (imm_expr.X_add_number > -0x200 |
df58fc94 | 13065 | && imm_expr.X_add_number <= 0x200) |
252b5132 | 13066 | { |
b0e6f033 RS |
13067 | macro_build (NULL, s, "t,r,.", op[0], op[1], |
13068 | (int) -imm_expr.X_add_number); | |
8fc2e39e | 13069 | break; |
252b5132 | 13070 | } |
df58fc94 | 13071 | goto do_subi_i; |
252b5132 RH |
13072 | case M_DSUBU_I: |
13073 | dbl = 1; | |
df58fc94 RS |
13074 | s = "daddiu"; |
13075 | s2 = "dsubu"; | |
13076 | do_subi: | |
b0e6f033 | 13077 | if (imm_expr.X_add_number > -0x8000 |
252b5132 RH |
13078 | && imm_expr.X_add_number <= 0x8000) |
13079 | { | |
13080 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
c0ebe874 | 13081 | macro_build (&imm_expr, s, "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
8fc2e39e | 13082 | break; |
252b5132 | 13083 | } |
df58fc94 | 13084 | do_subi_i: |
8fc2e39e | 13085 | used_at = 1; |
67c0d1eb | 13086 | load_register (AT, &imm_expr, dbl); |
c0ebe874 | 13087 | macro_build (NULL, s2, "d,v,t", op[0], op[1], AT); |
252b5132 RH |
13088 | break; |
13089 | ||
13090 | case M_TEQ_I: | |
13091 | s = "teq"; | |
13092 | goto trap; | |
13093 | case M_TGE_I: | |
13094 | s = "tge"; | |
13095 | goto trap; | |
13096 | case M_TGEU_I: | |
13097 | s = "tgeu"; | |
13098 | goto trap; | |
13099 | case M_TLT_I: | |
13100 | s = "tlt"; | |
13101 | goto trap; | |
13102 | case M_TLTU_I: | |
13103 | s = "tltu"; | |
13104 | goto trap; | |
13105 | case M_TNE_I: | |
13106 | s = "tne"; | |
13107 | trap: | |
8fc2e39e | 13108 | used_at = 1; |
bad1aba3 | 13109 | load_register (AT, &imm_expr, GPR_SIZE == 64); |
c0ebe874 | 13110 | macro_build (NULL, s, "s,t", op[0], AT); |
252b5132 RH |
13111 | break; |
13112 | ||
252b5132 | 13113 | case M_TRUNCWS: |
43841e91 | 13114 | case M_TRUNCWD: |
df58fc94 | 13115 | gas_assert (!mips_opts.micromips); |
0aa27725 | 13116 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 13117 | used_at = 1; |
252b5132 RH |
13118 | |
13119 | /* | |
13120 | * Is the double cfc1 instruction a bug in the mips assembler; | |
13121 | * or is there a reason for it? | |
13122 | */ | |
7d10b47d | 13123 | start_noreorder (); |
c0ebe874 RS |
13124 | macro_build (NULL, "cfc1", "t,G", op[2], RA); |
13125 | macro_build (NULL, "cfc1", "t,G", op[2], RA); | |
67c0d1eb | 13126 | macro_build (NULL, "nop", ""); |
252b5132 | 13127 | expr1.X_add_number = 3; |
c0ebe874 | 13128 | macro_build (&expr1, "ori", "t,r,i", AT, op[2], BFD_RELOC_LO16); |
252b5132 | 13129 | expr1.X_add_number = 2; |
67c0d1eb RS |
13130 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
13131 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
13132 | macro_build (NULL, "nop", ""); | |
13133 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
c0ebe874 RS |
13134 | op[0], op[1]); |
13135 | macro_build (NULL, "ctc1", "t,G", op[2], RA); | |
67c0d1eb | 13136 | macro_build (NULL, "nop", ""); |
7d10b47d | 13137 | end_noreorder (); |
252b5132 RH |
13138 | break; |
13139 | ||
f2ae14a1 | 13140 | case M_ULH_AB: |
252b5132 | 13141 | s = "lb"; |
df58fc94 RS |
13142 | s2 = "lbu"; |
13143 | off = 1; | |
13144 | goto uld_st; | |
f2ae14a1 | 13145 | case M_ULHU_AB: |
252b5132 | 13146 | s = "lbu"; |
df58fc94 RS |
13147 | s2 = "lbu"; |
13148 | off = 1; | |
13149 | goto uld_st; | |
f2ae14a1 | 13150 | case M_ULW_AB: |
df58fc94 RS |
13151 | s = "lwl"; |
13152 | s2 = "lwr"; | |
7f3c4072 | 13153 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
13154 | off = 3; |
13155 | goto uld_st; | |
f2ae14a1 | 13156 | case M_ULD_AB: |
252b5132 RH |
13157 | s = "ldl"; |
13158 | s2 = "ldr"; | |
7f3c4072 | 13159 | offbits = (mips_opts.micromips ? 12 : 16); |
252b5132 | 13160 | off = 7; |
df58fc94 | 13161 | goto uld_st; |
f2ae14a1 | 13162 | case M_USH_AB: |
df58fc94 RS |
13163 | s = "sb"; |
13164 | s2 = "sb"; | |
13165 | off = 1; | |
13166 | ust = 1; | |
13167 | goto uld_st; | |
f2ae14a1 | 13168 | case M_USW_AB: |
df58fc94 RS |
13169 | s = "swl"; |
13170 | s2 = "swr"; | |
7f3c4072 | 13171 | offbits = (mips_opts.micromips ? 12 : 16); |
252b5132 | 13172 | off = 3; |
df58fc94 RS |
13173 | ust = 1; |
13174 | goto uld_st; | |
f2ae14a1 | 13175 | case M_USD_AB: |
df58fc94 RS |
13176 | s = "sdl"; |
13177 | s2 = "sdr"; | |
7f3c4072 | 13178 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
13179 | off = 7; |
13180 | ust = 1; | |
13181 | ||
13182 | uld_st: | |
c0ebe874 | 13183 | breg = op[2]; |
f2ae14a1 | 13184 | large_offset = !small_offset_p (off, align, offbits); |
df58fc94 RS |
13185 | ep = &offset_expr; |
13186 | expr1.X_add_number = 0; | |
f2ae14a1 | 13187 | if (large_offset) |
df58fc94 RS |
13188 | { |
13189 | used_at = 1; | |
13190 | tempreg = AT; | |
f2ae14a1 RS |
13191 | if (small_offset_p (0, align, 16)) |
13192 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", tempreg, breg, -1, | |
13193 | offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
13194 | else | |
13195 | { | |
13196 | load_address (tempreg, ep, &used_at); | |
13197 | if (breg != 0) | |
13198 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
13199 | tempreg, tempreg, breg); | |
13200 | } | |
13201 | offset_reloc[0] = BFD_RELOC_LO16; | |
13202 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
13203 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
df58fc94 | 13204 | breg = tempreg; |
c0ebe874 | 13205 | tempreg = op[0]; |
df58fc94 RS |
13206 | ep = &expr1; |
13207 | } | |
c0ebe874 | 13208 | else if (!ust && op[0] == breg) |
8fc2e39e TS |
13209 | { |
13210 | used_at = 1; | |
13211 | tempreg = AT; | |
13212 | } | |
252b5132 | 13213 | else |
c0ebe874 | 13214 | tempreg = op[0]; |
af22f5b2 | 13215 | |
df58fc94 RS |
13216 | if (off == 1) |
13217 | goto ulh_sh; | |
252b5132 | 13218 | |
90ecf173 | 13219 | if (!target_big_endian) |
df58fc94 | 13220 | ep->X_add_number += off; |
f2ae14a1 | 13221 | if (offbits == 12) |
c8276761 | 13222 | macro_build (NULL, s, "t,~(b)", tempreg, (int) ep->X_add_number, breg); |
f2ae14a1 RS |
13223 | else |
13224 | macro_build (ep, s, "t,o(b)", tempreg, -1, | |
13225 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
df58fc94 | 13226 | |
90ecf173 | 13227 | if (!target_big_endian) |
df58fc94 | 13228 | ep->X_add_number -= off; |
252b5132 | 13229 | else |
df58fc94 | 13230 | ep->X_add_number += off; |
f2ae14a1 | 13231 | if (offbits == 12) |
df58fc94 | 13232 | macro_build (NULL, s2, "t,~(b)", |
c8276761 | 13233 | tempreg, (int) ep->X_add_number, breg); |
f2ae14a1 RS |
13234 | else |
13235 | macro_build (ep, s2, "t,o(b)", tempreg, -1, | |
13236 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
252b5132 | 13237 | |
df58fc94 | 13238 | /* If necessary, move the result in tempreg to the final destination. */ |
c0ebe874 | 13239 | if (!ust && op[0] != tempreg) |
df58fc94 RS |
13240 | { |
13241 | /* Protect second load's delay slot. */ | |
13242 | load_delay_nop (); | |
c0ebe874 | 13243 | move_register (op[0], tempreg); |
df58fc94 | 13244 | } |
8fc2e39e | 13245 | break; |
252b5132 | 13246 | |
df58fc94 | 13247 | ulh_sh: |
d6bc6245 | 13248 | used_at = 1; |
df58fc94 RS |
13249 | if (target_big_endian == ust) |
13250 | ep->X_add_number += off; | |
c0ebe874 | 13251 | tempreg = ust || large_offset ? op[0] : AT; |
f2ae14a1 RS |
13252 | macro_build (ep, s, "t,o(b)", tempreg, -1, |
13253 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
df58fc94 RS |
13254 | |
13255 | /* For halfword transfers we need a temporary register to shuffle | |
13256 | bytes. Unfortunately for M_USH_A we have none available before | |
13257 | the next store as AT holds the base address. We deal with this | |
13258 | case by clobbering TREG and then restoring it as with ULH. */ | |
c0ebe874 | 13259 | tempreg = ust == large_offset ? op[0] : AT; |
df58fc94 | 13260 | if (ust) |
c0ebe874 | 13261 | macro_build (NULL, "srl", SHFT_FMT, tempreg, op[0], 8); |
df58fc94 RS |
13262 | |
13263 | if (target_big_endian == ust) | |
13264 | ep->X_add_number -= off; | |
252b5132 | 13265 | else |
df58fc94 | 13266 | ep->X_add_number += off; |
f2ae14a1 RS |
13267 | macro_build (ep, s2, "t,o(b)", tempreg, -1, |
13268 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
252b5132 | 13269 | |
df58fc94 | 13270 | /* For M_USH_A re-retrieve the LSB. */ |
f2ae14a1 | 13271 | if (ust && large_offset) |
df58fc94 RS |
13272 | { |
13273 | if (target_big_endian) | |
13274 | ep->X_add_number += off; | |
13275 | else | |
13276 | ep->X_add_number -= off; | |
f2ae14a1 RS |
13277 | macro_build (&expr1, "lbu", "t,o(b)", AT, -1, |
13278 | offset_reloc[0], offset_reloc[1], offset_reloc[2], AT); | |
df58fc94 RS |
13279 | } |
13280 | /* For ULH and M_USH_A OR the LSB in. */ | |
f2ae14a1 | 13281 | if (!ust || large_offset) |
df58fc94 | 13282 | { |
c0ebe874 | 13283 | tempreg = !large_offset ? AT : op[0]; |
df58fc94 | 13284 | macro_build (NULL, "sll", SHFT_FMT, tempreg, tempreg, 8); |
c0ebe874 | 13285 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); |
df58fc94 | 13286 | } |
252b5132 RH |
13287 | break; |
13288 | ||
13289 | default: | |
13290 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 13291 | are added dynamically. */ |
1661c76c | 13292 | as_bad (_("macro %s not implemented yet"), ip->insn_mo->name); |
252b5132 RH |
13293 | break; |
13294 | } | |
741fe287 | 13295 | if (!mips_opts.at && used_at) |
1661c76c | 13296 | as_bad (_("macro used $at after \".set noat\"")); |
252b5132 RH |
13297 | } |
13298 | ||
13299 | /* Implement macros in mips16 mode. */ | |
13300 | ||
13301 | static void | |
17a2f251 | 13302 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 | 13303 | { |
c0ebe874 | 13304 | const struct mips_operand_array *operands; |
252b5132 | 13305 | int mask; |
c0ebe874 | 13306 | int tmp; |
252b5132 RH |
13307 | expressionS expr1; |
13308 | int dbl; | |
13309 | const char *s, *s2, *s3; | |
c0ebe874 RS |
13310 | unsigned int op[MAX_OPERANDS]; |
13311 | unsigned int i; | |
252b5132 RH |
13312 | |
13313 | mask = ip->insn_mo->mask; | |
13314 | ||
c0ebe874 RS |
13315 | operands = insn_operands (ip); |
13316 | for (i = 0; i < MAX_OPERANDS; i++) | |
13317 | if (operands->operand[i]) | |
13318 | op[i] = insn_extract_operand (ip, operands->operand[i]); | |
13319 | else | |
13320 | op[i] = -1; | |
252b5132 | 13321 | |
252b5132 RH |
13322 | expr1.X_op = O_constant; |
13323 | expr1.X_op_symbol = NULL; | |
13324 | expr1.X_add_symbol = NULL; | |
13325 | expr1.X_add_number = 1; | |
13326 | ||
13327 | dbl = 0; | |
13328 | ||
13329 | switch (mask) | |
13330 | { | |
13331 | default: | |
b37df7c4 | 13332 | abort (); |
252b5132 RH |
13333 | |
13334 | case M_DDIV_3: | |
13335 | dbl = 1; | |
13336 | case M_DIV_3: | |
13337 | s = "mflo"; | |
13338 | goto do_div3; | |
13339 | case M_DREM_3: | |
13340 | dbl = 1; | |
13341 | case M_REM_3: | |
13342 | s = "mfhi"; | |
13343 | do_div3: | |
7d10b47d | 13344 | start_noreorder (); |
c0ebe874 | 13345 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", op[1], op[2]); |
252b5132 | 13346 | expr1.X_add_number = 2; |
c0ebe874 | 13347 | macro_build (&expr1, "bnez", "x,p", op[2]); |
67c0d1eb | 13348 | macro_build (NULL, "break", "6", 7); |
bdaaa2e1 | 13349 | |
252b5132 RH |
13350 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
13351 | since that causes an overflow. We should do that as well, | |
13352 | but I don't see how to do the comparisons without a temporary | |
13353 | register. */ | |
7d10b47d | 13354 | end_noreorder (); |
c0ebe874 | 13355 | macro_build (NULL, s, "x", op[0]); |
252b5132 RH |
13356 | break; |
13357 | ||
13358 | case M_DIVU_3: | |
13359 | s = "divu"; | |
13360 | s2 = "mflo"; | |
13361 | goto do_divu3; | |
13362 | case M_REMU_3: | |
13363 | s = "divu"; | |
13364 | s2 = "mfhi"; | |
13365 | goto do_divu3; | |
13366 | case M_DDIVU_3: | |
13367 | s = "ddivu"; | |
13368 | s2 = "mflo"; | |
13369 | goto do_divu3; | |
13370 | case M_DREMU_3: | |
13371 | s = "ddivu"; | |
13372 | s2 = "mfhi"; | |
13373 | do_divu3: | |
7d10b47d | 13374 | start_noreorder (); |
c0ebe874 | 13375 | macro_build (NULL, s, "0,x,y", op[1], op[2]); |
252b5132 | 13376 | expr1.X_add_number = 2; |
c0ebe874 | 13377 | macro_build (&expr1, "bnez", "x,p", op[2]); |
67c0d1eb | 13378 | macro_build (NULL, "break", "6", 7); |
7d10b47d | 13379 | end_noreorder (); |
c0ebe874 | 13380 | macro_build (NULL, s2, "x", op[0]); |
252b5132 RH |
13381 | break; |
13382 | ||
13383 | case M_DMUL: | |
13384 | dbl = 1; | |
13385 | case M_MUL: | |
c0ebe874 RS |
13386 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", op[1], op[2]); |
13387 | macro_build (NULL, "mflo", "x", op[0]); | |
8fc2e39e | 13388 | break; |
252b5132 RH |
13389 | |
13390 | case M_DSUBU_I: | |
13391 | dbl = 1; | |
13392 | goto do_subu; | |
13393 | case M_SUBU_I: | |
13394 | do_subu: | |
252b5132 | 13395 | imm_expr.X_add_number = -imm_expr.X_add_number; |
c0ebe874 | 13396 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", op[0], op[1]); |
252b5132 RH |
13397 | break; |
13398 | ||
13399 | case M_SUBU_I_2: | |
252b5132 | 13400 | imm_expr.X_add_number = -imm_expr.X_add_number; |
c0ebe874 | 13401 | macro_build (&imm_expr, "addiu", "x,k", op[0]); |
252b5132 RH |
13402 | break; |
13403 | ||
13404 | case M_DSUBU_I_2: | |
252b5132 | 13405 | imm_expr.X_add_number = -imm_expr.X_add_number; |
c0ebe874 | 13406 | macro_build (&imm_expr, "daddiu", "y,j", op[0]); |
252b5132 RH |
13407 | break; |
13408 | ||
13409 | case M_BEQ: | |
13410 | s = "cmp"; | |
13411 | s2 = "bteqz"; | |
13412 | goto do_branch; | |
13413 | case M_BNE: | |
13414 | s = "cmp"; | |
13415 | s2 = "btnez"; | |
13416 | goto do_branch; | |
13417 | case M_BLT: | |
13418 | s = "slt"; | |
13419 | s2 = "btnez"; | |
13420 | goto do_branch; | |
13421 | case M_BLTU: | |
13422 | s = "sltu"; | |
13423 | s2 = "btnez"; | |
13424 | goto do_branch; | |
13425 | case M_BLE: | |
13426 | s = "slt"; | |
13427 | s2 = "bteqz"; | |
13428 | goto do_reverse_branch; | |
13429 | case M_BLEU: | |
13430 | s = "sltu"; | |
13431 | s2 = "bteqz"; | |
13432 | goto do_reverse_branch; | |
13433 | case M_BGE: | |
13434 | s = "slt"; | |
13435 | s2 = "bteqz"; | |
13436 | goto do_branch; | |
13437 | case M_BGEU: | |
13438 | s = "sltu"; | |
13439 | s2 = "bteqz"; | |
13440 | goto do_branch; | |
13441 | case M_BGT: | |
13442 | s = "slt"; | |
13443 | s2 = "btnez"; | |
13444 | goto do_reverse_branch; | |
13445 | case M_BGTU: | |
13446 | s = "sltu"; | |
13447 | s2 = "btnez"; | |
13448 | ||
13449 | do_reverse_branch: | |
c0ebe874 RS |
13450 | tmp = op[1]; |
13451 | op[1] = op[0]; | |
13452 | op[0] = tmp; | |
252b5132 RH |
13453 | |
13454 | do_branch: | |
c0ebe874 | 13455 | macro_build (NULL, s, "x,y", op[0], op[1]); |
67c0d1eb | 13456 | macro_build (&offset_expr, s2, "p"); |
252b5132 RH |
13457 | break; |
13458 | ||
13459 | case M_BEQ_I: | |
13460 | s = "cmpi"; | |
13461 | s2 = "bteqz"; | |
13462 | s3 = "x,U"; | |
13463 | goto do_branch_i; | |
13464 | case M_BNE_I: | |
13465 | s = "cmpi"; | |
13466 | s2 = "btnez"; | |
13467 | s3 = "x,U"; | |
13468 | goto do_branch_i; | |
13469 | case M_BLT_I: | |
13470 | s = "slti"; | |
13471 | s2 = "btnez"; | |
13472 | s3 = "x,8"; | |
13473 | goto do_branch_i; | |
13474 | case M_BLTU_I: | |
13475 | s = "sltiu"; | |
13476 | s2 = "btnez"; | |
13477 | s3 = "x,8"; | |
13478 | goto do_branch_i; | |
13479 | case M_BLE_I: | |
13480 | s = "slti"; | |
13481 | s2 = "btnez"; | |
13482 | s3 = "x,8"; | |
13483 | goto do_addone_branch_i; | |
13484 | case M_BLEU_I: | |
13485 | s = "sltiu"; | |
13486 | s2 = "btnez"; | |
13487 | s3 = "x,8"; | |
13488 | goto do_addone_branch_i; | |
13489 | case M_BGE_I: | |
13490 | s = "slti"; | |
13491 | s2 = "bteqz"; | |
13492 | s3 = "x,8"; | |
13493 | goto do_branch_i; | |
13494 | case M_BGEU_I: | |
13495 | s = "sltiu"; | |
13496 | s2 = "bteqz"; | |
13497 | s3 = "x,8"; | |
13498 | goto do_branch_i; | |
13499 | case M_BGT_I: | |
13500 | s = "slti"; | |
13501 | s2 = "bteqz"; | |
13502 | s3 = "x,8"; | |
13503 | goto do_addone_branch_i; | |
13504 | case M_BGTU_I: | |
13505 | s = "sltiu"; | |
13506 | s2 = "bteqz"; | |
13507 | s3 = "x,8"; | |
13508 | ||
13509 | do_addone_branch_i: | |
252b5132 RH |
13510 | ++imm_expr.X_add_number; |
13511 | ||
13512 | do_branch_i: | |
c0ebe874 | 13513 | macro_build (&imm_expr, s, s3, op[0]); |
67c0d1eb | 13514 | macro_build (&offset_expr, s2, "p"); |
252b5132 RH |
13515 | break; |
13516 | ||
13517 | case M_ABS: | |
13518 | expr1.X_add_number = 0; | |
c0ebe874 RS |
13519 | macro_build (&expr1, "slti", "x,8", op[1]); |
13520 | if (op[0] != op[1]) | |
13521 | macro_build (NULL, "move", "y,X", op[0], mips16_to_32_reg_map[op[1]]); | |
252b5132 | 13522 | expr1.X_add_number = 2; |
67c0d1eb | 13523 | macro_build (&expr1, "bteqz", "p"); |
c0ebe874 | 13524 | macro_build (NULL, "neg", "x,w", op[0], op[0]); |
0acfaea6 | 13525 | break; |
252b5132 RH |
13526 | } |
13527 | } | |
13528 | ||
14daeee3 RS |
13529 | /* Look up instruction [START, START + LENGTH) in HASH. Record any extra |
13530 | opcode bits in *OPCODE_EXTRA. */ | |
13531 | ||
13532 | static struct mips_opcode * | |
13533 | mips_lookup_insn (struct hash_control *hash, const char *start, | |
da8bca91 | 13534 | ssize_t length, unsigned int *opcode_extra) |
14daeee3 RS |
13535 | { |
13536 | char *name, *dot, *p; | |
13537 | unsigned int mask, suffix; | |
da8bca91 | 13538 | ssize_t opend; |
14daeee3 RS |
13539 | struct mips_opcode *insn; |
13540 | ||
13541 | /* Make a copy of the instruction so that we can fiddle with it. */ | |
4ec9d7d5 | 13542 | name = xstrndup (start, length); |
14daeee3 RS |
13543 | |
13544 | /* Look up the instruction as-is. */ | |
13545 | insn = (struct mips_opcode *) hash_find (hash, name); | |
ee5734f0 | 13546 | if (insn) |
e1fa0163 | 13547 | goto end; |
14daeee3 RS |
13548 | |
13549 | dot = strchr (name, '.'); | |
13550 | if (dot && dot[1]) | |
13551 | { | |
13552 | /* Try to interpret the text after the dot as a VU0 channel suffix. */ | |
13553 | p = mips_parse_vu0_channels (dot + 1, &mask); | |
13554 | if (*p == 0 && mask != 0) | |
13555 | { | |
13556 | *dot = 0; | |
13557 | insn = (struct mips_opcode *) hash_find (hash, name); | |
13558 | *dot = '.'; | |
13559 | if (insn && (insn->pinfo2 & INSN2_VU0_CHANNEL_SUFFIX) != 0) | |
13560 | { | |
13561 | *opcode_extra |= mask << mips_vu0_channel_mask.lsb; | |
e1fa0163 | 13562 | goto end; |
14daeee3 RS |
13563 | } |
13564 | } | |
13565 | } | |
13566 | ||
13567 | if (mips_opts.micromips) | |
13568 | { | |
13569 | /* See if there's an instruction size override suffix, | |
13570 | either `16' or `32', at the end of the mnemonic proper, | |
13571 | that defines the operation, i.e. before the first `.' | |
13572 | character if any. Strip it and retry. */ | |
13573 | opend = dot != NULL ? dot - name : length; | |
13574 | if (opend >= 3 && name[opend - 2] == '1' && name[opend - 1] == '6') | |
13575 | suffix = 2; | |
13576 | else if (name[opend - 2] == '3' && name[opend - 1] == '2') | |
13577 | suffix = 4; | |
13578 | else | |
13579 | suffix = 0; | |
13580 | if (suffix) | |
13581 | { | |
13582 | memcpy (name + opend - 2, name + opend, length - opend + 1); | |
13583 | insn = (struct mips_opcode *) hash_find (hash, name); | |
ee5734f0 | 13584 | if (insn) |
14daeee3 RS |
13585 | { |
13586 | forced_insn_length = suffix; | |
e1fa0163 | 13587 | goto end; |
14daeee3 RS |
13588 | } |
13589 | } | |
13590 | } | |
13591 | ||
e1fa0163 NC |
13592 | insn = NULL; |
13593 | end: | |
13594 | free (name); | |
13595 | return insn; | |
14daeee3 RS |
13596 | } |
13597 | ||
77bd4346 | 13598 | /* Assemble an instruction into its binary format. If the instruction |
e423441d RS |
13599 | is a macro, set imm_expr and offset_expr to the values associated |
13600 | with "I" and "A" operands respectively. Otherwise store the value | |
13601 | of the relocatable field (if any) in offset_expr. In both cases | |
13602 | set offset_reloc to the relocation operators applied to offset_expr. */ | |
252b5132 RH |
13603 | |
13604 | static void | |
60f20e8b | 13605 | mips_ip (char *str, struct mips_cl_insn *insn) |
252b5132 | 13606 | { |
60f20e8b | 13607 | const struct mips_opcode *first, *past; |
df58fc94 | 13608 | struct hash_control *hash; |
a92713e6 | 13609 | char format; |
14daeee3 | 13610 | size_t end; |
a92713e6 | 13611 | struct mips_operand_token *tokens; |
14daeee3 | 13612 | unsigned int opcode_extra; |
252b5132 | 13613 | |
df58fc94 RS |
13614 | if (mips_opts.micromips) |
13615 | { | |
13616 | hash = micromips_op_hash; | |
13617 | past = µmips_opcodes[bfd_micromips_num_opcodes]; | |
13618 | } | |
13619 | else | |
13620 | { | |
13621 | hash = op_hash; | |
13622 | past = &mips_opcodes[NUMOPCODES]; | |
13623 | } | |
13624 | forced_insn_length = 0; | |
14daeee3 | 13625 | opcode_extra = 0; |
252b5132 | 13626 | |
df58fc94 | 13627 | /* We first try to match an instruction up to a space or to the end. */ |
a40bc9dd RS |
13628 | for (end = 0; str[end] != '\0' && !ISSPACE (str[end]); end++) |
13629 | continue; | |
bdaaa2e1 | 13630 | |
60f20e8b RS |
13631 | first = mips_lookup_insn (hash, str, end, &opcode_extra); |
13632 | if (first == NULL) | |
252b5132 | 13633 | { |
1661c76c | 13634 | set_insn_error (0, _("unrecognized opcode")); |
a40bc9dd | 13635 | return; |
252b5132 RH |
13636 | } |
13637 | ||
60f20e8b | 13638 | if (strcmp (first->name, "li.s") == 0) |
a92713e6 | 13639 | format = 'f'; |
60f20e8b | 13640 | else if (strcmp (first->name, "li.d") == 0) |
a92713e6 RS |
13641 | format = 'd'; |
13642 | else | |
13643 | format = 0; | |
13644 | tokens = mips_parse_arguments (str + end, format); | |
13645 | if (!tokens) | |
13646 | return; | |
13647 | ||
60f20e8b RS |
13648 | if (!match_insns (insn, first, past, tokens, opcode_extra, FALSE) |
13649 | && !match_insns (insn, first, past, tokens, opcode_extra, TRUE)) | |
1661c76c | 13650 | set_insn_error (0, _("invalid operands")); |
df58fc94 | 13651 | |
e3de51ce | 13652 | obstack_free (&mips_operand_tokens, tokens); |
252b5132 RH |
13653 | } |
13654 | ||
77bd4346 RS |
13655 | /* As for mips_ip, but used when assembling MIPS16 code. |
13656 | Also set forced_insn_length to the resulting instruction size in | |
13657 | bytes if the user explicitly requested a small or extended instruction. */ | |
252b5132 RH |
13658 | |
13659 | static void | |
60f20e8b | 13660 | mips16_ip (char *str, struct mips_cl_insn *insn) |
252b5132 | 13661 | { |
1a00e612 | 13662 | char *end, *s, c; |
60f20e8b | 13663 | struct mips_opcode *first; |
a92713e6 | 13664 | struct mips_operand_token *tokens; |
252b5132 | 13665 | |
df58fc94 | 13666 | forced_insn_length = 0; |
252b5132 | 13667 | |
3882b010 | 13668 | for (s = str; ISLOWER (*s); ++s) |
252b5132 | 13669 | ; |
1a00e612 RS |
13670 | end = s; |
13671 | c = *end; | |
13672 | switch (c) | |
252b5132 RH |
13673 | { |
13674 | case '\0': | |
13675 | break; | |
13676 | ||
13677 | case ' ': | |
1a00e612 | 13678 | s++; |
252b5132 RH |
13679 | break; |
13680 | ||
13681 | case '.': | |
13682 | if (s[1] == 't' && s[2] == ' ') | |
13683 | { | |
df58fc94 | 13684 | forced_insn_length = 2; |
252b5132 RH |
13685 | s += 3; |
13686 | break; | |
13687 | } | |
13688 | else if (s[1] == 'e' && s[2] == ' ') | |
13689 | { | |
df58fc94 | 13690 | forced_insn_length = 4; |
252b5132 RH |
13691 | s += 3; |
13692 | break; | |
13693 | } | |
13694 | /* Fall through. */ | |
13695 | default: | |
1661c76c | 13696 | set_insn_error (0, _("unrecognized opcode")); |
252b5132 RH |
13697 | return; |
13698 | } | |
13699 | ||
df58fc94 RS |
13700 | if (mips_opts.noautoextend && !forced_insn_length) |
13701 | forced_insn_length = 2; | |
252b5132 | 13702 | |
1a00e612 | 13703 | *end = 0; |
60f20e8b | 13704 | first = (struct mips_opcode *) hash_find (mips16_op_hash, str); |
1a00e612 RS |
13705 | *end = c; |
13706 | ||
60f20e8b | 13707 | if (!first) |
252b5132 | 13708 | { |
1661c76c | 13709 | set_insn_error (0, _("unrecognized opcode")); |
252b5132 RH |
13710 | return; |
13711 | } | |
13712 | ||
a92713e6 RS |
13713 | tokens = mips_parse_arguments (s, 0); |
13714 | if (!tokens) | |
13715 | return; | |
13716 | ||
60f20e8b | 13717 | if (!match_mips16_insns (insn, first, tokens)) |
1661c76c | 13718 | set_insn_error (0, _("invalid operands")); |
252b5132 | 13719 | |
e3de51ce | 13720 | obstack_free (&mips_operand_tokens, tokens); |
252b5132 RH |
13721 | } |
13722 | ||
b886a2ab RS |
13723 | /* Marshal immediate value VAL for an extended MIPS16 instruction. |
13724 | NBITS is the number of significant bits in VAL. */ | |
13725 | ||
13726 | static unsigned long | |
13727 | mips16_immed_extend (offsetT val, unsigned int nbits) | |
13728 | { | |
13729 | int extval; | |
13730 | if (nbits == 16) | |
13731 | { | |
13732 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
13733 | val &= 0x1f; | |
13734 | } | |
13735 | else if (nbits == 15) | |
13736 | { | |
13737 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
13738 | val &= 0xf; | |
13739 | } | |
13740 | else | |
13741 | { | |
13742 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
13743 | val = 0; | |
13744 | } | |
13745 | return (extval << 16) | val; | |
13746 | } | |
13747 | ||
3ccad066 RS |
13748 | /* Like decode_mips16_operand, but require the operand to be defined and |
13749 | require it to be an integer. */ | |
13750 | ||
13751 | static const struct mips_int_operand * | |
13752 | mips16_immed_operand (int type, bfd_boolean extended_p) | |
13753 | { | |
13754 | const struct mips_operand *operand; | |
13755 | ||
13756 | operand = decode_mips16_operand (type, extended_p); | |
13757 | if (!operand || (operand->type != OP_INT && operand->type != OP_PCREL)) | |
13758 | abort (); | |
13759 | return (const struct mips_int_operand *) operand; | |
13760 | } | |
13761 | ||
13762 | /* Return true if SVAL fits OPERAND. RELOC is as for mips16_immed. */ | |
13763 | ||
13764 | static bfd_boolean | |
13765 | mips16_immed_in_range_p (const struct mips_int_operand *operand, | |
13766 | bfd_reloc_code_real_type reloc, offsetT sval) | |
13767 | { | |
13768 | int min_val, max_val; | |
13769 | ||
13770 | min_val = mips_int_operand_min (operand); | |
13771 | max_val = mips_int_operand_max (operand); | |
13772 | if (reloc != BFD_RELOC_UNUSED) | |
13773 | { | |
13774 | if (min_val < 0) | |
13775 | sval = SEXT_16BIT (sval); | |
13776 | else | |
13777 | sval &= 0xffff; | |
13778 | } | |
13779 | ||
13780 | return (sval >= min_val | |
13781 | && sval <= max_val | |
13782 | && (sval & ((1 << operand->shift) - 1)) == 0); | |
13783 | } | |
13784 | ||
5c04167a RS |
13785 | /* Install immediate value VAL into MIPS16 instruction *INSN, |
13786 | extending it if necessary. The instruction in *INSN may | |
13787 | already be extended. | |
13788 | ||
43c0598f RS |
13789 | RELOC is the relocation that produced VAL, or BFD_RELOC_UNUSED |
13790 | if none. In the former case, VAL is a 16-bit number with no | |
13791 | defined signedness. | |
13792 | ||
13793 | TYPE is the type of the immediate field. USER_INSN_LENGTH | |
13794 | is the length that the user requested, or 0 if none. */ | |
252b5132 RH |
13795 | |
13796 | static void | |
3b4dbbbf | 13797 | mips16_immed (const char *file, unsigned int line, int type, |
43c0598f | 13798 | bfd_reloc_code_real_type reloc, offsetT val, |
5c04167a | 13799 | unsigned int user_insn_length, unsigned long *insn) |
252b5132 | 13800 | { |
3ccad066 RS |
13801 | const struct mips_int_operand *operand; |
13802 | unsigned int uval, length; | |
252b5132 | 13803 | |
3ccad066 RS |
13804 | operand = mips16_immed_operand (type, FALSE); |
13805 | if (!mips16_immed_in_range_p (operand, reloc, val)) | |
5c04167a RS |
13806 | { |
13807 | /* We need an extended instruction. */ | |
13808 | if (user_insn_length == 2) | |
13809 | as_bad_where (file, line, _("invalid unextended operand value")); | |
13810 | else | |
13811 | *insn |= MIPS16_EXTEND; | |
13812 | } | |
13813 | else if (user_insn_length == 4) | |
13814 | { | |
13815 | /* The operand doesn't force an unextended instruction to be extended. | |
13816 | Warn if the user wanted an extended instruction anyway. */ | |
13817 | *insn |= MIPS16_EXTEND; | |
13818 | as_warn_where (file, line, | |
13819 | _("extended operand requested but not required")); | |
13820 | } | |
252b5132 | 13821 | |
3ccad066 RS |
13822 | length = mips16_opcode_length (*insn); |
13823 | if (length == 4) | |
252b5132 | 13824 | { |
3ccad066 RS |
13825 | operand = mips16_immed_operand (type, TRUE); |
13826 | if (!mips16_immed_in_range_p (operand, reloc, val)) | |
13827 | as_bad_where (file, line, | |
13828 | _("operand value out of range for instruction")); | |
252b5132 | 13829 | } |
3ccad066 RS |
13830 | uval = ((unsigned int) val >> operand->shift) - operand->bias; |
13831 | if (length == 2) | |
13832 | *insn = mips_insert_operand (&operand->root, *insn, uval); | |
252b5132 | 13833 | else |
3ccad066 | 13834 | *insn |= mips16_immed_extend (uval, operand->root.size); |
252b5132 RH |
13835 | } |
13836 | \f | |
d6f16593 | 13837 | struct percent_op_match |
ad8d3bb3 | 13838 | { |
5e0116d5 RS |
13839 | const char *str; |
13840 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
13841 | }; |
13842 | ||
13843 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 13844 | { |
5e0116d5 | 13845 | {"%lo", BFD_RELOC_LO16}, |
5e0116d5 RS |
13846 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
13847 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
13848 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
13849 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
13850 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
13851 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
13852 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
13853 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
13854 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
13855 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
13856 | {"%half", BFD_RELOC_16}, | |
13857 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
13858 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
13859 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
13860 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
13861 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
13862 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
13863 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
13864 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
13865 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
13866 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
7361da2c AB |
13867 | {"%hi", BFD_RELOC_HI16_S}, |
13868 | {"%pcrel_hi", BFD_RELOC_HI16_S_PCREL}, | |
13869 | {"%pcrel_lo", BFD_RELOC_LO16_PCREL} | |
ad8d3bb3 TS |
13870 | }; |
13871 | ||
d6f16593 MR |
13872 | static const struct percent_op_match mips16_percent_op[] = |
13873 | { | |
13874 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
13875 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
738e5348 RS |
13876 | {"%got", BFD_RELOC_MIPS16_GOT16}, |
13877 | {"%call16", BFD_RELOC_MIPS16_CALL16}, | |
d0f13682 CLT |
13878 | {"%hi", BFD_RELOC_MIPS16_HI16_S}, |
13879 | {"%tlsgd", BFD_RELOC_MIPS16_TLS_GD}, | |
13880 | {"%tlsldm", BFD_RELOC_MIPS16_TLS_LDM}, | |
13881 | {"%dtprel_hi", BFD_RELOC_MIPS16_TLS_DTPREL_HI16}, | |
13882 | {"%dtprel_lo", BFD_RELOC_MIPS16_TLS_DTPREL_LO16}, | |
13883 | {"%tprel_hi", BFD_RELOC_MIPS16_TLS_TPREL_HI16}, | |
13884 | {"%tprel_lo", BFD_RELOC_MIPS16_TLS_TPREL_LO16}, | |
13885 | {"%gottprel", BFD_RELOC_MIPS16_TLS_GOTTPREL} | |
d6f16593 MR |
13886 | }; |
13887 | ||
252b5132 | 13888 | |
5e0116d5 RS |
13889 | /* Return true if *STR points to a relocation operator. When returning true, |
13890 | move *STR over the operator and store its relocation code in *RELOC. | |
13891 | Leave both *STR and *RELOC alone when returning false. */ | |
13892 | ||
13893 | static bfd_boolean | |
17a2f251 | 13894 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 13895 | { |
d6f16593 MR |
13896 | const struct percent_op_match *percent_op; |
13897 | size_t limit, i; | |
13898 | ||
13899 | if (mips_opts.mips16) | |
13900 | { | |
13901 | percent_op = mips16_percent_op; | |
13902 | limit = ARRAY_SIZE (mips16_percent_op); | |
13903 | } | |
13904 | else | |
13905 | { | |
13906 | percent_op = mips_percent_op; | |
13907 | limit = ARRAY_SIZE (mips_percent_op); | |
13908 | } | |
76b3015f | 13909 | |
d6f16593 | 13910 | for (i = 0; i < limit; i++) |
5e0116d5 | 13911 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 13912 | { |
3f98094e DJ |
13913 | int len = strlen (percent_op[i].str); |
13914 | ||
13915 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
13916 | continue; | |
13917 | ||
5e0116d5 RS |
13918 | *str += strlen (percent_op[i].str); |
13919 | *reloc = percent_op[i].reloc; | |
394f9b3a | 13920 | |
5e0116d5 RS |
13921 | /* Check whether the output BFD supports this relocation. |
13922 | If not, issue an error and fall back on something safe. */ | |
13923 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 13924 | { |
20203fb9 | 13925 | as_bad (_("relocation %s isn't supported by the current ABI"), |
5e0116d5 | 13926 | percent_op[i].str); |
01a3f561 | 13927 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 13928 | } |
5e0116d5 | 13929 | return TRUE; |
394f9b3a | 13930 | } |
5e0116d5 | 13931 | return FALSE; |
394f9b3a | 13932 | } |
ad8d3bb3 | 13933 | |
ad8d3bb3 | 13934 | |
5e0116d5 RS |
13935 | /* Parse string STR as a 16-bit relocatable operand. Store the |
13936 | expression in *EP and the relocations in the array starting | |
13937 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 13938 | |
01a3f561 | 13939 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 13940 | |
5e0116d5 | 13941 | static size_t |
17a2f251 TS |
13942 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
13943 | char *str) | |
ad8d3bb3 | 13944 | { |
5e0116d5 RS |
13945 | bfd_reloc_code_real_type reversed_reloc[3]; |
13946 | size_t reloc_index, i; | |
09b8f35a RS |
13947 | int crux_depth, str_depth; |
13948 | char *crux; | |
5e0116d5 RS |
13949 | |
13950 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
13951 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
13952 | of the main expression and with CRUX_DEPTH containing the number | |
13953 | of open brackets at that point. */ | |
13954 | reloc_index = -1; | |
13955 | str_depth = 0; | |
13956 | do | |
fb1b3232 | 13957 | { |
09b8f35a RS |
13958 | reloc_index++; |
13959 | crux = str; | |
13960 | crux_depth = str_depth; | |
13961 | ||
13962 | /* Skip over whitespace and brackets, keeping count of the number | |
13963 | of brackets. */ | |
13964 | while (*str == ' ' || *str == '\t' || *str == '(') | |
13965 | if (*str++ == '(') | |
13966 | str_depth++; | |
5e0116d5 | 13967 | } |
09b8f35a RS |
13968 | while (*str == '%' |
13969 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
13970 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 13971 | |
09b8f35a | 13972 | my_getExpression (ep, crux); |
5e0116d5 | 13973 | str = expr_end; |
394f9b3a | 13974 | |
5e0116d5 | 13975 | /* Match every open bracket. */ |
09b8f35a | 13976 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 13977 | if (*str++ == ')') |
09b8f35a | 13978 | crux_depth--; |
394f9b3a | 13979 | |
09b8f35a | 13980 | if (crux_depth > 0) |
20203fb9 | 13981 | as_bad (_("unclosed '('")); |
394f9b3a | 13982 | |
5e0116d5 | 13983 | expr_end = str; |
252b5132 | 13984 | |
01a3f561 | 13985 | if (reloc_index != 0) |
64bdfcaf RS |
13986 | { |
13987 | prev_reloc_op_frag = frag_now; | |
13988 | for (i = 0; i < reloc_index; i++) | |
13989 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
13990 | } | |
fb1b3232 | 13991 | |
5e0116d5 | 13992 | return reloc_index; |
252b5132 RH |
13993 | } |
13994 | ||
13995 | static void | |
17a2f251 | 13996 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
13997 | { |
13998 | char *save_in; | |
13999 | ||
14000 | save_in = input_line_pointer; | |
14001 | input_line_pointer = str; | |
14002 | expression (ep); | |
14003 | expr_end = input_line_pointer; | |
14004 | input_line_pointer = save_in; | |
252b5132 RH |
14005 | } |
14006 | ||
6d4af3c2 | 14007 | const char * |
17a2f251 | 14008 | md_atof (int type, char *litP, int *sizeP) |
252b5132 | 14009 | { |
499ac353 | 14010 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
252b5132 RH |
14011 | } |
14012 | ||
14013 | void | |
17a2f251 | 14014 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
14015 | { |
14016 | if (target_big_endian) | |
14017 | number_to_chars_bigendian (buf, val, n); | |
14018 | else | |
14019 | number_to_chars_littleendian (buf, val, n); | |
14020 | } | |
14021 | \f | |
e013f690 TS |
14022 | static int support_64bit_objects(void) |
14023 | { | |
14024 | const char **list, **l; | |
aa3d8fdf | 14025 | int yes; |
e013f690 TS |
14026 | |
14027 | list = bfd_target_list (); | |
14028 | for (l = list; *l != NULL; l++) | |
aeffff67 RS |
14029 | if (strcmp (*l, ELF_TARGET ("elf64-", "big")) == 0 |
14030 | || strcmp (*l, ELF_TARGET ("elf64-", "little")) == 0) | |
e013f690 | 14031 | break; |
aa3d8fdf | 14032 | yes = (*l != NULL); |
e013f690 | 14033 | free (list); |
aa3d8fdf | 14034 | return yes; |
e013f690 TS |
14035 | } |
14036 | ||
316f5878 RS |
14037 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
14038 | NEW_VALUE. Warn if another value was already specified. Note: | |
14039 | we have to defer parsing the -march and -mtune arguments in order | |
14040 | to handle 'from-abi' correctly, since the ABI might be specified | |
14041 | in a later argument. */ | |
14042 | ||
14043 | static void | |
17a2f251 | 14044 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
14045 | { |
14046 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
1661c76c | 14047 | as_warn (_("a different %s was already specified, is now %s"), |
316f5878 RS |
14048 | string_ptr == &mips_arch_string ? "-march" : "-mtune", |
14049 | new_value); | |
14050 | ||
14051 | *string_ptr = new_value; | |
14052 | } | |
14053 | ||
252b5132 | 14054 | int |
17b9d67d | 14055 | md_parse_option (int c, const char *arg) |
252b5132 | 14056 | { |
c6278170 RS |
14057 | unsigned int i; |
14058 | ||
14059 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
14060 | if (c == mips_ases[i].option_on || c == mips_ases[i].option_off) | |
14061 | { | |
919731af | 14062 | file_ase_explicit |= mips_set_ase (&mips_ases[i], &file_mips_opts, |
c6278170 RS |
14063 | c == mips_ases[i].option_on); |
14064 | return 1; | |
14065 | } | |
14066 | ||
252b5132 RH |
14067 | switch (c) |
14068 | { | |
119d663a NC |
14069 | case OPTION_CONSTRUCT_FLOATS: |
14070 | mips_disable_float_construction = 0; | |
14071 | break; | |
bdaaa2e1 | 14072 | |
119d663a NC |
14073 | case OPTION_NO_CONSTRUCT_FLOATS: |
14074 | mips_disable_float_construction = 1; | |
14075 | break; | |
bdaaa2e1 | 14076 | |
252b5132 RH |
14077 | case OPTION_TRAP: |
14078 | mips_trap = 1; | |
14079 | break; | |
14080 | ||
14081 | case OPTION_BREAK: | |
14082 | mips_trap = 0; | |
14083 | break; | |
14084 | ||
14085 | case OPTION_EB: | |
14086 | target_big_endian = 1; | |
14087 | break; | |
14088 | ||
14089 | case OPTION_EL: | |
14090 | target_big_endian = 0; | |
14091 | break; | |
14092 | ||
14093 | case 'O': | |
4ffff32f TS |
14094 | if (arg == NULL) |
14095 | mips_optimize = 1; | |
14096 | else if (arg[0] == '0') | |
14097 | mips_optimize = 0; | |
14098 | else if (arg[0] == '1') | |
252b5132 RH |
14099 | mips_optimize = 1; |
14100 | else | |
14101 | mips_optimize = 2; | |
14102 | break; | |
14103 | ||
14104 | case 'g': | |
14105 | if (arg == NULL) | |
14106 | mips_debug = 2; | |
14107 | else | |
14108 | mips_debug = atoi (arg); | |
252b5132 RH |
14109 | break; |
14110 | ||
14111 | case OPTION_MIPS1: | |
0b35dfee | 14112 | file_mips_opts.isa = ISA_MIPS1; |
252b5132 RH |
14113 | break; |
14114 | ||
14115 | case OPTION_MIPS2: | |
0b35dfee | 14116 | file_mips_opts.isa = ISA_MIPS2; |
252b5132 RH |
14117 | break; |
14118 | ||
14119 | case OPTION_MIPS3: | |
0b35dfee | 14120 | file_mips_opts.isa = ISA_MIPS3; |
252b5132 RH |
14121 | break; |
14122 | ||
14123 | case OPTION_MIPS4: | |
0b35dfee | 14124 | file_mips_opts.isa = ISA_MIPS4; |
e7af610e NC |
14125 | break; |
14126 | ||
84ea6cf2 | 14127 | case OPTION_MIPS5: |
0b35dfee | 14128 | file_mips_opts.isa = ISA_MIPS5; |
84ea6cf2 NC |
14129 | break; |
14130 | ||
e7af610e | 14131 | case OPTION_MIPS32: |
0b35dfee | 14132 | file_mips_opts.isa = ISA_MIPS32; |
252b5132 RH |
14133 | break; |
14134 | ||
af7ee8bf | 14135 | case OPTION_MIPS32R2: |
0b35dfee | 14136 | file_mips_opts.isa = ISA_MIPS32R2; |
af7ee8bf CD |
14137 | break; |
14138 | ||
ae52f483 | 14139 | case OPTION_MIPS32R3: |
0ae19f05 | 14140 | file_mips_opts.isa = ISA_MIPS32R3; |
ae52f483 AB |
14141 | break; |
14142 | ||
14143 | case OPTION_MIPS32R5: | |
0ae19f05 | 14144 | file_mips_opts.isa = ISA_MIPS32R5; |
ae52f483 AB |
14145 | break; |
14146 | ||
7361da2c AB |
14147 | case OPTION_MIPS32R6: |
14148 | file_mips_opts.isa = ISA_MIPS32R6; | |
14149 | break; | |
14150 | ||
5f74bc13 | 14151 | case OPTION_MIPS64R2: |
0b35dfee | 14152 | file_mips_opts.isa = ISA_MIPS64R2; |
5f74bc13 CD |
14153 | break; |
14154 | ||
ae52f483 | 14155 | case OPTION_MIPS64R3: |
0ae19f05 | 14156 | file_mips_opts.isa = ISA_MIPS64R3; |
ae52f483 AB |
14157 | break; |
14158 | ||
14159 | case OPTION_MIPS64R5: | |
0ae19f05 | 14160 | file_mips_opts.isa = ISA_MIPS64R5; |
ae52f483 AB |
14161 | break; |
14162 | ||
7361da2c AB |
14163 | case OPTION_MIPS64R6: |
14164 | file_mips_opts.isa = ISA_MIPS64R6; | |
14165 | break; | |
14166 | ||
84ea6cf2 | 14167 | case OPTION_MIPS64: |
0b35dfee | 14168 | file_mips_opts.isa = ISA_MIPS64; |
84ea6cf2 NC |
14169 | break; |
14170 | ||
ec68c924 | 14171 | case OPTION_MTUNE: |
316f5878 RS |
14172 | mips_set_option_string (&mips_tune_string, arg); |
14173 | break; | |
ec68c924 | 14174 | |
316f5878 RS |
14175 | case OPTION_MARCH: |
14176 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
14177 | break; |
14178 | ||
14179 | case OPTION_M4650: | |
316f5878 RS |
14180 | mips_set_option_string (&mips_arch_string, "4650"); |
14181 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
14182 | break; |
14183 | ||
14184 | case OPTION_NO_M4650: | |
14185 | break; | |
14186 | ||
14187 | case OPTION_M4010: | |
316f5878 RS |
14188 | mips_set_option_string (&mips_arch_string, "4010"); |
14189 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
14190 | break; |
14191 | ||
14192 | case OPTION_NO_M4010: | |
14193 | break; | |
14194 | ||
14195 | case OPTION_M4100: | |
316f5878 RS |
14196 | mips_set_option_string (&mips_arch_string, "4100"); |
14197 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
14198 | break; |
14199 | ||
14200 | case OPTION_NO_M4100: | |
14201 | break; | |
14202 | ||
252b5132 | 14203 | case OPTION_M3900: |
316f5878 RS |
14204 | mips_set_option_string (&mips_arch_string, "3900"); |
14205 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 14206 | break; |
bdaaa2e1 | 14207 | |
252b5132 RH |
14208 | case OPTION_NO_M3900: |
14209 | break; | |
14210 | ||
df58fc94 | 14211 | case OPTION_MICROMIPS: |
919731af | 14212 | if (file_mips_opts.mips16 == 1) |
df58fc94 RS |
14213 | { |
14214 | as_bad (_("-mmicromips cannot be used with -mips16")); | |
14215 | return 0; | |
14216 | } | |
919731af | 14217 | file_mips_opts.micromips = 1; |
df58fc94 RS |
14218 | mips_no_prev_insn (); |
14219 | break; | |
14220 | ||
14221 | case OPTION_NO_MICROMIPS: | |
919731af | 14222 | file_mips_opts.micromips = 0; |
df58fc94 RS |
14223 | mips_no_prev_insn (); |
14224 | break; | |
14225 | ||
252b5132 | 14226 | case OPTION_MIPS16: |
919731af | 14227 | if (file_mips_opts.micromips == 1) |
df58fc94 RS |
14228 | { |
14229 | as_bad (_("-mips16 cannot be used with -micromips")); | |
14230 | return 0; | |
14231 | } | |
919731af | 14232 | file_mips_opts.mips16 = 1; |
7d10b47d | 14233 | mips_no_prev_insn (); |
252b5132 RH |
14234 | break; |
14235 | ||
14236 | case OPTION_NO_MIPS16: | |
919731af | 14237 | file_mips_opts.mips16 = 0; |
7d10b47d | 14238 | mips_no_prev_insn (); |
252b5132 RH |
14239 | break; |
14240 | ||
6a32d874 CM |
14241 | case OPTION_FIX_24K: |
14242 | mips_fix_24k = 1; | |
14243 | break; | |
14244 | ||
14245 | case OPTION_NO_FIX_24K: | |
14246 | mips_fix_24k = 0; | |
14247 | break; | |
14248 | ||
a8d14a88 CM |
14249 | case OPTION_FIX_RM7000: |
14250 | mips_fix_rm7000 = 1; | |
14251 | break; | |
14252 | ||
14253 | case OPTION_NO_FIX_RM7000: | |
14254 | mips_fix_rm7000 = 0; | |
14255 | break; | |
14256 | ||
c67a084a NC |
14257 | case OPTION_FIX_LOONGSON2F_JUMP: |
14258 | mips_fix_loongson2f_jump = TRUE; | |
14259 | break; | |
14260 | ||
14261 | case OPTION_NO_FIX_LOONGSON2F_JUMP: | |
14262 | mips_fix_loongson2f_jump = FALSE; | |
14263 | break; | |
14264 | ||
14265 | case OPTION_FIX_LOONGSON2F_NOP: | |
14266 | mips_fix_loongson2f_nop = TRUE; | |
14267 | break; | |
14268 | ||
14269 | case OPTION_NO_FIX_LOONGSON2F_NOP: | |
14270 | mips_fix_loongson2f_nop = FALSE; | |
14271 | break; | |
14272 | ||
d766e8ec RS |
14273 | case OPTION_FIX_VR4120: |
14274 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
14275 | break; |
14276 | ||
d766e8ec RS |
14277 | case OPTION_NO_FIX_VR4120: |
14278 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
14279 | break; |
14280 | ||
7d8e00cf RS |
14281 | case OPTION_FIX_VR4130: |
14282 | mips_fix_vr4130 = 1; | |
14283 | break; | |
14284 | ||
14285 | case OPTION_NO_FIX_VR4130: | |
14286 | mips_fix_vr4130 = 0; | |
14287 | break; | |
14288 | ||
d954098f DD |
14289 | case OPTION_FIX_CN63XXP1: |
14290 | mips_fix_cn63xxp1 = TRUE; | |
14291 | break; | |
14292 | ||
14293 | case OPTION_NO_FIX_CN63XXP1: | |
14294 | mips_fix_cn63xxp1 = FALSE; | |
14295 | break; | |
14296 | ||
4a6a3df4 AO |
14297 | case OPTION_RELAX_BRANCH: |
14298 | mips_relax_branch = 1; | |
14299 | break; | |
14300 | ||
14301 | case OPTION_NO_RELAX_BRANCH: | |
14302 | mips_relax_branch = 0; | |
14303 | break; | |
14304 | ||
833794fc | 14305 | case OPTION_INSN32: |
919731af | 14306 | file_mips_opts.insn32 = TRUE; |
833794fc MR |
14307 | break; |
14308 | ||
14309 | case OPTION_NO_INSN32: | |
919731af | 14310 | file_mips_opts.insn32 = FALSE; |
833794fc MR |
14311 | break; |
14312 | ||
aa6975fb ILT |
14313 | case OPTION_MSHARED: |
14314 | mips_in_shared = TRUE; | |
14315 | break; | |
14316 | ||
14317 | case OPTION_MNO_SHARED: | |
14318 | mips_in_shared = FALSE; | |
14319 | break; | |
14320 | ||
aed1a261 | 14321 | case OPTION_MSYM32: |
919731af | 14322 | file_mips_opts.sym32 = TRUE; |
aed1a261 RS |
14323 | break; |
14324 | ||
14325 | case OPTION_MNO_SYM32: | |
919731af | 14326 | file_mips_opts.sym32 = FALSE; |
aed1a261 RS |
14327 | break; |
14328 | ||
252b5132 RH |
14329 | /* When generating ELF code, we permit -KPIC and -call_shared to |
14330 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
14331 | intended to be compatible with Irix 5. */ | |
14332 | case OPTION_CALL_SHARED: | |
252b5132 | 14333 | mips_pic = SVR4_PIC; |
143d77c5 | 14334 | mips_abicalls = TRUE; |
252b5132 RH |
14335 | break; |
14336 | ||
861fb55a | 14337 | case OPTION_CALL_NONPIC: |
861fb55a DJ |
14338 | mips_pic = NO_PIC; |
14339 | mips_abicalls = TRUE; | |
14340 | break; | |
14341 | ||
252b5132 | 14342 | case OPTION_NON_SHARED: |
252b5132 | 14343 | mips_pic = NO_PIC; |
143d77c5 | 14344 | mips_abicalls = FALSE; |
252b5132 RH |
14345 | break; |
14346 | ||
44075ae2 TS |
14347 | /* The -xgot option tells the assembler to use 32 bit offsets |
14348 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
14349 | compatibility. */ |
14350 | case OPTION_XGOT: | |
14351 | mips_big_got = 1; | |
14352 | break; | |
14353 | ||
14354 | case 'G': | |
6caf9ef4 TS |
14355 | g_switch_value = atoi (arg); |
14356 | g_switch_seen = 1; | |
252b5132 RH |
14357 | break; |
14358 | ||
34ba82a8 TS |
14359 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
14360 | and -mabi=64. */ | |
252b5132 | 14361 | case OPTION_32: |
f3ded42a | 14362 | mips_abi = O32_ABI; |
252b5132 RH |
14363 | break; |
14364 | ||
e013f690 | 14365 | case OPTION_N32: |
316f5878 | 14366 | mips_abi = N32_ABI; |
e013f690 | 14367 | break; |
252b5132 | 14368 | |
e013f690 | 14369 | case OPTION_64: |
316f5878 | 14370 | mips_abi = N64_ABI; |
f43abd2b | 14371 | if (!support_64bit_objects()) |
1661c76c | 14372 | as_fatal (_("no compiled in support for 64 bit object file format")); |
252b5132 RH |
14373 | break; |
14374 | ||
c97ef257 | 14375 | case OPTION_GP32: |
bad1aba3 | 14376 | file_mips_opts.gp = 32; |
c97ef257 AH |
14377 | break; |
14378 | ||
14379 | case OPTION_GP64: | |
bad1aba3 | 14380 | file_mips_opts.gp = 64; |
c97ef257 | 14381 | break; |
252b5132 | 14382 | |
ca4e0257 | 14383 | case OPTION_FP32: |
0b35dfee | 14384 | file_mips_opts.fp = 32; |
316f5878 RS |
14385 | break; |
14386 | ||
351cdf24 MF |
14387 | case OPTION_FPXX: |
14388 | file_mips_opts.fp = 0; | |
14389 | break; | |
14390 | ||
316f5878 | 14391 | case OPTION_FP64: |
0b35dfee | 14392 | file_mips_opts.fp = 64; |
ca4e0257 RS |
14393 | break; |
14394 | ||
351cdf24 MF |
14395 | case OPTION_ODD_SPREG: |
14396 | file_mips_opts.oddspreg = 1; | |
14397 | break; | |
14398 | ||
14399 | case OPTION_NO_ODD_SPREG: | |
14400 | file_mips_opts.oddspreg = 0; | |
14401 | break; | |
14402 | ||
037b32b9 | 14403 | case OPTION_SINGLE_FLOAT: |
0b35dfee | 14404 | file_mips_opts.single_float = 1; |
037b32b9 AN |
14405 | break; |
14406 | ||
14407 | case OPTION_DOUBLE_FLOAT: | |
0b35dfee | 14408 | file_mips_opts.single_float = 0; |
037b32b9 AN |
14409 | break; |
14410 | ||
14411 | case OPTION_SOFT_FLOAT: | |
0b35dfee | 14412 | file_mips_opts.soft_float = 1; |
037b32b9 AN |
14413 | break; |
14414 | ||
14415 | case OPTION_HARD_FLOAT: | |
0b35dfee | 14416 | file_mips_opts.soft_float = 0; |
037b32b9 AN |
14417 | break; |
14418 | ||
252b5132 | 14419 | case OPTION_MABI: |
e013f690 | 14420 | if (strcmp (arg, "32") == 0) |
316f5878 | 14421 | mips_abi = O32_ABI; |
e013f690 | 14422 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 14423 | mips_abi = O64_ABI; |
e013f690 | 14424 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 14425 | mips_abi = N32_ABI; |
e013f690 TS |
14426 | else if (strcmp (arg, "64") == 0) |
14427 | { | |
316f5878 | 14428 | mips_abi = N64_ABI; |
e013f690 | 14429 | if (! support_64bit_objects()) |
1661c76c | 14430 | as_fatal (_("no compiled in support for 64 bit object file " |
e013f690 TS |
14431 | "format")); |
14432 | } | |
14433 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 14434 | mips_abi = EABI_ABI; |
e013f690 | 14435 | else |
da0e507f TS |
14436 | { |
14437 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
14438 | return 0; | |
14439 | } | |
252b5132 RH |
14440 | break; |
14441 | ||
6b76fefe | 14442 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 14443 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
14444 | break; |
14445 | ||
9ee72ff1 | 14446 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 14447 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
14448 | break; |
14449 | ||
ecb4347a | 14450 | case OPTION_MDEBUG: |
b34976b6 | 14451 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
14452 | break; |
14453 | ||
14454 | case OPTION_NO_MDEBUG: | |
b34976b6 | 14455 | mips_flag_mdebug = FALSE; |
ecb4347a | 14456 | break; |
dcd410fe RO |
14457 | |
14458 | case OPTION_PDR: | |
14459 | mips_flag_pdr = TRUE; | |
14460 | break; | |
14461 | ||
14462 | case OPTION_NO_PDR: | |
14463 | mips_flag_pdr = FALSE; | |
14464 | break; | |
0a44bf69 RS |
14465 | |
14466 | case OPTION_MVXWORKS_PIC: | |
14467 | mips_pic = VXWORKS_PIC; | |
14468 | break; | |
ecb4347a | 14469 | |
ba92f887 MR |
14470 | case OPTION_NAN: |
14471 | if (strcmp (arg, "2008") == 0) | |
7361da2c | 14472 | mips_nan2008 = 1; |
ba92f887 | 14473 | else if (strcmp (arg, "legacy") == 0) |
7361da2c | 14474 | mips_nan2008 = 0; |
ba92f887 MR |
14475 | else |
14476 | { | |
1661c76c | 14477 | as_fatal (_("invalid NaN setting -mnan=%s"), arg); |
ba92f887 MR |
14478 | return 0; |
14479 | } | |
14480 | break; | |
14481 | ||
252b5132 RH |
14482 | default: |
14483 | return 0; | |
14484 | } | |
14485 | ||
c67a084a NC |
14486 | mips_fix_loongson2f = mips_fix_loongson2f_nop || mips_fix_loongson2f_jump; |
14487 | ||
252b5132 RH |
14488 | return 1; |
14489 | } | |
316f5878 | 14490 | \f |
919731af | 14491 | /* Set up globals to tune for the ISA or processor described by INFO. */ |
252b5132 | 14492 | |
316f5878 | 14493 | static void |
17a2f251 | 14494 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
14495 | { |
14496 | if (info != 0) | |
fef14a42 | 14497 | mips_tune = info->cpu; |
316f5878 | 14498 | } |
80cc45a5 | 14499 | |
34ba82a8 | 14500 | |
252b5132 | 14501 | void |
17a2f251 | 14502 | mips_after_parse_args (void) |
e9670677 | 14503 | { |
fef14a42 TS |
14504 | const struct mips_cpu_info *arch_info = 0; |
14505 | const struct mips_cpu_info *tune_info = 0; | |
14506 | ||
e9670677 | 14507 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 14508 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 14509 | { |
6caf9ef4 | 14510 | if (g_switch_seen && g_switch_value != 0) |
1661c76c | 14511 | as_bad (_("-G not supported in this configuration")); |
e9670677 MR |
14512 | g_switch_value = 0; |
14513 | } | |
14514 | ||
cac012d6 AO |
14515 | if (mips_abi == NO_ABI) |
14516 | mips_abi = MIPS_DEFAULT_ABI; | |
14517 | ||
919731af | 14518 | /* The following code determines the architecture. |
22923709 RS |
14519 | Similar code was added to GCC 3.3 (see override_options() in |
14520 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
14521 | as much as possible. */ | |
e9670677 | 14522 | |
316f5878 | 14523 | if (mips_arch_string != 0) |
fef14a42 | 14524 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 14525 | |
0b35dfee | 14526 | if (file_mips_opts.isa != ISA_UNKNOWN) |
e9670677 | 14527 | { |
0b35dfee | 14528 | /* Handle -mipsN. At this point, file_mips_opts.isa contains the |
fef14a42 | 14529 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 14530 | the -march selection (if any). */ |
fef14a42 | 14531 | if (arch_info != 0) |
e9670677 | 14532 | { |
316f5878 RS |
14533 | /* -march takes precedence over -mipsN, since it is more descriptive. |
14534 | There's no harm in specifying both as long as the ISA levels | |
14535 | are the same. */ | |
0b35dfee | 14536 | if (file_mips_opts.isa != arch_info->isa) |
1661c76c RS |
14537 | as_bad (_("-%s conflicts with the other architecture options," |
14538 | " which imply -%s"), | |
0b35dfee | 14539 | mips_cpu_info_from_isa (file_mips_opts.isa)->name, |
fef14a42 | 14540 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 14541 | } |
316f5878 | 14542 | else |
0b35dfee | 14543 | arch_info = mips_cpu_info_from_isa (file_mips_opts.isa); |
e9670677 MR |
14544 | } |
14545 | ||
fef14a42 | 14546 | if (arch_info == 0) |
95bfe26e MF |
14547 | { |
14548 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
14549 | gas_assert (arch_info); | |
14550 | } | |
e9670677 | 14551 | |
fef14a42 | 14552 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
20203fb9 | 14553 | as_bad (_("-march=%s is not compatible with the selected ABI"), |
fef14a42 TS |
14554 | arch_info->name); |
14555 | ||
919731af | 14556 | file_mips_opts.arch = arch_info->cpu; |
14557 | file_mips_opts.isa = arch_info->isa; | |
14558 | ||
14559 | /* Set up initial mips_opts state. */ | |
14560 | mips_opts = file_mips_opts; | |
14561 | ||
14562 | /* The register size inference code is now placed in | |
14563 | file_mips_check_options. */ | |
fef14a42 | 14564 | |
0b35dfee | 14565 | /* Optimize for file_mips_opts.arch, unless -mtune selects a different |
14566 | processor. */ | |
fef14a42 TS |
14567 | if (mips_tune_string != 0) |
14568 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 14569 | |
fef14a42 TS |
14570 | if (tune_info == 0) |
14571 | mips_set_tune (arch_info); | |
14572 | else | |
14573 | mips_set_tune (tune_info); | |
e9670677 | 14574 | |
ecb4347a | 14575 | if (mips_flag_mdebug < 0) |
e8044f35 | 14576 | mips_flag_mdebug = 0; |
e9670677 MR |
14577 | } |
14578 | \f | |
14579 | void | |
17a2f251 | 14580 | mips_init_after_args (void) |
252b5132 RH |
14581 | { |
14582 | /* initialize opcodes */ | |
14583 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 14584 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
14585 | } |
14586 | ||
14587 | long | |
17a2f251 | 14588 | md_pcrel_from (fixS *fixP) |
252b5132 | 14589 | { |
a7ebbfdf TS |
14590 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
14591 | switch (fixP->fx_r_type) | |
14592 | { | |
df58fc94 RS |
14593 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
14594 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
14595 | /* Return the address of the delay slot. */ | |
14596 | return addr + 2; | |
14597 | ||
14598 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
14599 | case BFD_RELOC_MICROMIPS_JMP: | |
a7ebbfdf | 14600 | case BFD_RELOC_16_PCREL_S2: |
7361da2c AB |
14601 | case BFD_RELOC_MIPS_21_PCREL_S2: |
14602 | case BFD_RELOC_MIPS_26_PCREL_S2: | |
a7ebbfdf TS |
14603 | case BFD_RELOC_MIPS_JMP: |
14604 | /* Return the address of the delay slot. */ | |
14605 | return addr + 4; | |
df58fc94 | 14606 | |
a7ebbfdf TS |
14607 | default: |
14608 | return addr; | |
14609 | } | |
252b5132 RH |
14610 | } |
14611 | ||
252b5132 RH |
14612 | /* This is called before the symbol table is processed. In order to |
14613 | work with gcc when using mips-tfile, we must keep all local labels. | |
14614 | However, in other cases, we want to discard them. If we were | |
14615 | called with -g, but we didn't see any debugging information, it may | |
14616 | mean that gcc is smuggling debugging information through to | |
14617 | mips-tfile, in which case we must generate all local labels. */ | |
14618 | ||
14619 | void | |
17a2f251 | 14620 | mips_frob_file_before_adjust (void) |
252b5132 RH |
14621 | { |
14622 | #ifndef NO_ECOFF_DEBUGGING | |
14623 | if (ECOFF_DEBUGGING | |
14624 | && mips_debug != 0 | |
14625 | && ! ecoff_debugging_seen) | |
14626 | flag_keep_locals = 1; | |
14627 | #endif | |
14628 | } | |
14629 | ||
3b91255e | 14630 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 14631 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
14632 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
14633 | relocation operators. | |
14634 | ||
14635 | For our purposes, a %lo() expression matches a %got() or %hi() | |
14636 | expression if: | |
14637 | ||
14638 | (a) it refers to the same symbol; and | |
14639 | (b) the offset applied in the %lo() expression is no lower than | |
14640 | the offset applied in the %got() or %hi(). | |
14641 | ||
14642 | (b) allows us to cope with code like: | |
14643 | ||
14644 | lui $4,%hi(foo) | |
14645 | lh $4,%lo(foo+2)($4) | |
14646 | ||
14647 | ...which is legal on RELA targets, and has a well-defined behaviour | |
14648 | if the user knows that adding 2 to "foo" will not induce a carry to | |
14649 | the high 16 bits. | |
14650 | ||
14651 | When several %lo()s match a particular %got() or %hi(), we use the | |
14652 | following rules to distinguish them: | |
14653 | ||
14654 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
14655 | higher offsets. | |
14656 | ||
14657 | (2) %lo()s with no matching %got() or %hi() are better than those | |
14658 | that already have a matching %got() or %hi(). | |
14659 | ||
14660 | (3) later %lo()s are better than earlier %lo()s. | |
14661 | ||
14662 | These rules are applied in order. | |
14663 | ||
14664 | (1) means, among other things, that %lo()s with identical offsets are | |
14665 | chosen if they exist. | |
14666 | ||
14667 | (2) means that we won't associate several high-part relocations with | |
14668 | the same low-part relocation unless there's no alternative. Having | |
14669 | several high parts for the same low part is a GNU extension; this rule | |
14670 | allows careful users to avoid it. | |
14671 | ||
14672 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
14673 | with the last high-part relocation being at the front of the list. | |
14674 | It therefore makes sense to choose the last matching low-part | |
14675 | relocation, all other things being equal. It's also easier | |
14676 | to code that way. */ | |
252b5132 RH |
14677 | |
14678 | void | |
17a2f251 | 14679 | mips_frob_file (void) |
252b5132 RH |
14680 | { |
14681 | struct mips_hi_fixup *l; | |
35903be0 | 14682 | bfd_reloc_code_real_type looking_for_rtype = BFD_RELOC_UNUSED; |
252b5132 RH |
14683 | |
14684 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
14685 | { | |
14686 | segment_info_type *seginfo; | |
3b91255e RS |
14687 | bfd_boolean matched_lo_p; |
14688 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 14689 | |
9c2799c2 | 14690 | gas_assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 14691 | |
5919d012 | 14692 | /* If a GOT16 relocation turns out to be against a global symbol, |
b886a2ab RS |
14693 | there isn't supposed to be a matching LO. Ignore %gots against |
14694 | constants; we'll report an error for those later. */ | |
738e5348 | 14695 | if (got16_reloc_p (l->fixp->fx_r_type) |
b886a2ab RS |
14696 | && !(l->fixp->fx_addsy |
14697 | && pic_need_relax (l->fixp->fx_addsy, l->seg))) | |
5919d012 RS |
14698 | continue; |
14699 | ||
14700 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
14701 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
14702 | continue; |
14703 | ||
252b5132 | 14704 | seginfo = seg_info (l->seg); |
252b5132 | 14705 | |
3b91255e RS |
14706 | /* Set HI_POS to the position of this relocation in the chain. |
14707 | Set LO_POS to the position of the chosen low-part relocation. | |
14708 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
14709 | relocation that matches an immediately-preceding high-part | |
14710 | relocation. */ | |
14711 | hi_pos = NULL; | |
14712 | lo_pos = NULL; | |
14713 | matched_lo_p = FALSE; | |
738e5348 | 14714 | looking_for_rtype = matching_lo_reloc (l->fixp->fx_r_type); |
35903be0 | 14715 | |
3b91255e RS |
14716 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) |
14717 | { | |
14718 | if (*pos == l->fixp) | |
14719 | hi_pos = pos; | |
14720 | ||
35903be0 | 14721 | if ((*pos)->fx_r_type == looking_for_rtype |
30cfc97a | 14722 | && symbol_same_p ((*pos)->fx_addsy, l->fixp->fx_addsy) |
3b91255e RS |
14723 | && (*pos)->fx_offset >= l->fixp->fx_offset |
14724 | && (lo_pos == NULL | |
14725 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
14726 | || (!matched_lo_p | |
14727 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
14728 | lo_pos = pos; | |
14729 | ||
14730 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
14731 | && fixup_has_matching_lo_p (*pos)); | |
14732 | } | |
14733 | ||
14734 | /* If we found a match, remove the high-part relocation from its | |
14735 | current position and insert it before the low-part relocation. | |
14736 | Make the offsets match so that fixup_has_matching_lo_p() | |
14737 | will return true. | |
14738 | ||
14739 | We don't warn about unmatched high-part relocations since some | |
14740 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
14741 | instructions. */ | |
14742 | if (lo_pos != NULL) | |
14743 | { | |
14744 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
14745 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 14746 | { |
3b91255e RS |
14747 | *hi_pos = l->fixp->fx_next; |
14748 | l->fixp->fx_next = *lo_pos; | |
14749 | *lo_pos = l->fixp; | |
252b5132 | 14750 | } |
252b5132 RH |
14751 | } |
14752 | } | |
14753 | } | |
14754 | ||
252b5132 | 14755 | int |
17a2f251 | 14756 | mips_force_relocation (fixS *fixp) |
252b5132 | 14757 | { |
ae6063d4 | 14758 | if (generic_force_reloc (fixp)) |
252b5132 RH |
14759 | return 1; |
14760 | ||
df58fc94 RS |
14761 | /* We want to keep BFD_RELOC_MICROMIPS_*_PCREL_S1 relocation, |
14762 | so that the linker relaxation can update targets. */ | |
14763 | if (fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
14764 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
14765 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1) | |
14766 | return 1; | |
14767 | ||
7361da2c AB |
14768 | /* We want all PC-relative relocations to be kept for R6 relaxation. */ |
14769 | if (ISA_IS_R6 (mips_opts.isa) | |
14770 | && (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2 | |
14771 | || fixp->fx_r_type == BFD_RELOC_MIPS_21_PCREL_S2 | |
14772 | || fixp->fx_r_type == BFD_RELOC_MIPS_26_PCREL_S2 | |
14773 | || fixp->fx_r_type == BFD_RELOC_MIPS_18_PCREL_S3 | |
14774 | || fixp->fx_r_type == BFD_RELOC_MIPS_19_PCREL_S2 | |
14775 | || fixp->fx_r_type == BFD_RELOC_HI16_S_PCREL | |
14776 | || fixp->fx_r_type == BFD_RELOC_LO16_PCREL)) | |
14777 | return 1; | |
14778 | ||
3e722fb5 | 14779 | return 0; |
252b5132 RH |
14780 | } |
14781 | ||
b886a2ab RS |
14782 | /* Read the instruction associated with RELOC from BUF. */ |
14783 | ||
14784 | static unsigned int | |
14785 | read_reloc_insn (char *buf, bfd_reloc_code_real_type reloc) | |
14786 | { | |
14787 | if (mips16_reloc_p (reloc) || micromips_reloc_p (reloc)) | |
14788 | return read_compressed_insn (buf, 4); | |
14789 | else | |
14790 | return read_insn (buf); | |
14791 | } | |
14792 | ||
14793 | /* Write instruction INSN to BUF, given that it has been relocated | |
14794 | by RELOC. */ | |
14795 | ||
14796 | static void | |
14797 | write_reloc_insn (char *buf, bfd_reloc_code_real_type reloc, | |
14798 | unsigned long insn) | |
14799 | { | |
14800 | if (mips16_reloc_p (reloc) || micromips_reloc_p (reloc)) | |
14801 | write_compressed_insn (buf, insn, 4); | |
14802 | else | |
14803 | write_insn (buf, insn); | |
14804 | } | |
14805 | ||
252b5132 RH |
14806 | /* Apply a fixup to the object file. */ |
14807 | ||
94f592af | 14808 | void |
55cf6793 | 14809 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 14810 | { |
4d68580a | 14811 | char *buf; |
b886a2ab | 14812 | unsigned long insn; |
a7ebbfdf | 14813 | reloc_howto_type *howto; |
252b5132 | 14814 | |
d56a8dda RS |
14815 | if (fixP->fx_pcrel) |
14816 | switch (fixP->fx_r_type) | |
14817 | { | |
14818 | case BFD_RELOC_16_PCREL_S2: | |
14819 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
14820 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
14821 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
14822 | case BFD_RELOC_32_PCREL: | |
7361da2c AB |
14823 | case BFD_RELOC_MIPS_21_PCREL_S2: |
14824 | case BFD_RELOC_MIPS_26_PCREL_S2: | |
14825 | case BFD_RELOC_MIPS_18_PCREL_S3: | |
14826 | case BFD_RELOC_MIPS_19_PCREL_S2: | |
14827 | case BFD_RELOC_HI16_S_PCREL: | |
14828 | case BFD_RELOC_LO16_PCREL: | |
d56a8dda RS |
14829 | break; |
14830 | ||
14831 | case BFD_RELOC_32: | |
14832 | fixP->fx_r_type = BFD_RELOC_32_PCREL; | |
14833 | break; | |
14834 | ||
14835 | default: | |
14836 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
14837 | _("PC-relative reference to a different section")); | |
14838 | break; | |
14839 | } | |
14840 | ||
14841 | /* Handle BFD_RELOC_8, since it's easy. Punt on other bfd relocations | |
14842 | that have no MIPS ELF equivalent. */ | |
14843 | if (fixP->fx_r_type != BFD_RELOC_8) | |
14844 | { | |
14845 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
14846 | if (!howto) | |
14847 | return; | |
14848 | } | |
65551fa4 | 14849 | |
df58fc94 RS |
14850 | gas_assert (fixP->fx_size == 2 |
14851 | || fixP->fx_size == 4 | |
d56a8dda | 14852 | || fixP->fx_r_type == BFD_RELOC_8 |
90ecf173 MR |
14853 | || fixP->fx_r_type == BFD_RELOC_16 |
14854 | || fixP->fx_r_type == BFD_RELOC_64 | |
14855 | || fixP->fx_r_type == BFD_RELOC_CTOR | |
14856 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
df58fc94 | 14857 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_SUB |
90ecf173 MR |
14858 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
14859 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY | |
2f0c68f2 CM |
14860 | || fixP->fx_r_type == BFD_RELOC_MIPS_TLS_DTPREL64 |
14861 | || fixP->fx_r_type == BFD_RELOC_NONE); | |
252b5132 | 14862 | |
4d68580a | 14863 | buf = fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 | 14864 | |
b1dca8ee RS |
14865 | /* Don't treat parts of a composite relocation as done. There are two |
14866 | reasons for this: | |
14867 | ||
14868 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
14869 | should nevertheless be emitted if the first part is. | |
14870 | ||
14871 | (2) In normal usage, composite relocations are never assembly-time | |
14872 | constants. The easiest way of dealing with the pathological | |
14873 | exceptions is to generate a relocation against STN_UNDEF and | |
14874 | leave everything up to the linker. */ | |
3994f87e | 14875 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
14876 | fixP->fx_done = 1; |
14877 | ||
14878 | switch (fixP->fx_r_type) | |
14879 | { | |
3f98094e DJ |
14880 | case BFD_RELOC_MIPS_TLS_GD: |
14881 | case BFD_RELOC_MIPS_TLS_LDM: | |
741d6ea8 JM |
14882 | case BFD_RELOC_MIPS_TLS_DTPREL32: |
14883 | case BFD_RELOC_MIPS_TLS_DTPREL64: | |
3f98094e DJ |
14884 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: |
14885 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
14886 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
d0f13682 CLT |
14887 | case BFD_RELOC_MIPS_TLS_TPREL32: |
14888 | case BFD_RELOC_MIPS_TLS_TPREL64: | |
3f98094e DJ |
14889 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: |
14890 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
df58fc94 RS |
14891 | case BFD_RELOC_MICROMIPS_TLS_GD: |
14892 | case BFD_RELOC_MICROMIPS_TLS_LDM: | |
14893 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16: | |
14894 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16: | |
14895 | case BFD_RELOC_MICROMIPS_TLS_GOTTPREL: | |
14896 | case BFD_RELOC_MICROMIPS_TLS_TPREL_HI16: | |
14897 | case BFD_RELOC_MICROMIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
14898 | case BFD_RELOC_MIPS16_TLS_GD: |
14899 | case BFD_RELOC_MIPS16_TLS_LDM: | |
14900 | case BFD_RELOC_MIPS16_TLS_DTPREL_HI16: | |
14901 | case BFD_RELOC_MIPS16_TLS_DTPREL_LO16: | |
14902 | case BFD_RELOC_MIPS16_TLS_GOTTPREL: | |
14903 | case BFD_RELOC_MIPS16_TLS_TPREL_HI16: | |
14904 | case BFD_RELOC_MIPS16_TLS_TPREL_LO16: | |
b886a2ab RS |
14905 | if (!fixP->fx_addsy) |
14906 | { | |
14907 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
14908 | _("TLS relocation against a constant")); | |
14909 | break; | |
14910 | } | |
3f98094e DJ |
14911 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
14912 | /* fall through */ | |
14913 | ||
252b5132 | 14914 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
14915 | case BFD_RELOC_MIPS_SHIFT5: |
14916 | case BFD_RELOC_MIPS_SHIFT6: | |
14917 | case BFD_RELOC_MIPS_GOT_DISP: | |
14918 | case BFD_RELOC_MIPS_GOT_PAGE: | |
14919 | case BFD_RELOC_MIPS_GOT_OFST: | |
14920 | case BFD_RELOC_MIPS_SUB: | |
14921 | case BFD_RELOC_MIPS_INSERT_A: | |
14922 | case BFD_RELOC_MIPS_INSERT_B: | |
14923 | case BFD_RELOC_MIPS_DELETE: | |
14924 | case BFD_RELOC_MIPS_HIGHEST: | |
14925 | case BFD_RELOC_MIPS_HIGHER: | |
14926 | case BFD_RELOC_MIPS_SCN_DISP: | |
14927 | case BFD_RELOC_MIPS_REL16: | |
14928 | case BFD_RELOC_MIPS_RELGOT: | |
14929 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
14930 | case BFD_RELOC_HI16: |
14931 | case BFD_RELOC_HI16_S: | |
b886a2ab | 14932 | case BFD_RELOC_LO16: |
cdf6fd85 | 14933 | case BFD_RELOC_GPREL16: |
252b5132 RH |
14934 | case BFD_RELOC_MIPS_LITERAL: |
14935 | case BFD_RELOC_MIPS_CALL16: | |
14936 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 14937 | case BFD_RELOC_GPREL32: |
252b5132 RH |
14938 | case BFD_RELOC_MIPS_GOT_HI16: |
14939 | case BFD_RELOC_MIPS_GOT_LO16: | |
14940 | case BFD_RELOC_MIPS_CALL_HI16: | |
14941 | case BFD_RELOC_MIPS_CALL_LO16: | |
14942 | case BFD_RELOC_MIPS16_GPREL: | |
738e5348 RS |
14943 | case BFD_RELOC_MIPS16_GOT16: |
14944 | case BFD_RELOC_MIPS16_CALL16: | |
d6f16593 MR |
14945 | case BFD_RELOC_MIPS16_HI16: |
14946 | case BFD_RELOC_MIPS16_HI16_S: | |
b886a2ab | 14947 | case BFD_RELOC_MIPS16_LO16: |
252b5132 | 14948 | case BFD_RELOC_MIPS16_JMP: |
df58fc94 RS |
14949 | case BFD_RELOC_MICROMIPS_JMP: |
14950 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
14951 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
14952 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
14953 | case BFD_RELOC_MICROMIPS_SUB: | |
14954 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
14955 | case BFD_RELOC_MICROMIPS_HIGHER: | |
14956 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
14957 | case BFD_RELOC_MICROMIPS_JALR: | |
14958 | case BFD_RELOC_MICROMIPS_HI16: | |
14959 | case BFD_RELOC_MICROMIPS_HI16_S: | |
b886a2ab | 14960 | case BFD_RELOC_MICROMIPS_LO16: |
df58fc94 RS |
14961 | case BFD_RELOC_MICROMIPS_GPREL16: |
14962 | case BFD_RELOC_MICROMIPS_LITERAL: | |
14963 | case BFD_RELOC_MICROMIPS_CALL16: | |
14964 | case BFD_RELOC_MICROMIPS_GOT16: | |
14965 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
14966 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
14967 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
14968 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
067ec077 | 14969 | case BFD_RELOC_MIPS_EH: |
b886a2ab RS |
14970 | if (fixP->fx_done) |
14971 | { | |
14972 | offsetT value; | |
14973 | ||
14974 | if (calculate_reloc (fixP->fx_r_type, *valP, &value)) | |
14975 | { | |
14976 | insn = read_reloc_insn (buf, fixP->fx_r_type); | |
14977 | if (mips16_reloc_p (fixP->fx_r_type)) | |
14978 | insn |= mips16_immed_extend (value, 16); | |
14979 | else | |
14980 | insn |= (value & 0xffff); | |
14981 | write_reloc_insn (buf, fixP->fx_r_type, insn); | |
14982 | } | |
14983 | else | |
14984 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1661c76c | 14985 | _("unsupported constant in relocation")); |
b886a2ab | 14986 | } |
252b5132 RH |
14987 | break; |
14988 | ||
252b5132 RH |
14989 | case BFD_RELOC_64: |
14990 | /* This is handled like BFD_RELOC_32, but we output a sign | |
14991 | extended value if we are only 32 bits. */ | |
3e722fb5 | 14992 | if (fixP->fx_done) |
252b5132 RH |
14993 | { |
14994 | if (8 <= sizeof (valueT)) | |
4d68580a | 14995 | md_number_to_chars (buf, *valP, 8); |
252b5132 RH |
14996 | else |
14997 | { | |
a7ebbfdf | 14998 | valueT hiv; |
252b5132 | 14999 | |
a7ebbfdf | 15000 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
15001 | hiv = 0xffffffff; |
15002 | else | |
15003 | hiv = 0; | |
4d68580a RS |
15004 | md_number_to_chars (buf + (target_big_endian ? 4 : 0), *valP, 4); |
15005 | md_number_to_chars (buf + (target_big_endian ? 0 : 4), hiv, 4); | |
252b5132 RH |
15006 | } |
15007 | } | |
15008 | break; | |
15009 | ||
056350c6 | 15010 | case BFD_RELOC_RVA: |
252b5132 | 15011 | case BFD_RELOC_32: |
b47468a6 | 15012 | case BFD_RELOC_32_PCREL: |
252b5132 | 15013 | case BFD_RELOC_16: |
d56a8dda | 15014 | case BFD_RELOC_8: |
252b5132 | 15015 | /* If we are deleting this reloc entry, we must fill in the |
54f4ddb3 TS |
15016 | value now. This can happen if we have a .word which is not |
15017 | resolved when it appears but is later defined. */ | |
252b5132 | 15018 | if (fixP->fx_done) |
4d68580a | 15019 | md_number_to_chars (buf, *valP, fixP->fx_size); |
252b5132 RH |
15020 | break; |
15021 | ||
7361da2c AB |
15022 | case BFD_RELOC_MIPS_21_PCREL_S2: |
15023 | case BFD_RELOC_MIPS_26_PCREL_S2: | |
15024 | if ((*valP & 0x3) != 0) | |
15025 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15026 | _("branch to misaligned address (%lx)"), (long) *valP); | |
15027 | ||
15028 | gas_assert (!fixP->fx_done); | |
15029 | break; | |
15030 | ||
15031 | case BFD_RELOC_MIPS_18_PCREL_S3: | |
0866e94c | 15032 | if ((S_GET_VALUE (fixP->fx_addsy) & 0x7) != 0) |
7361da2c | 15033 | as_bad_where (fixP->fx_file, fixP->fx_line, |
0866e94c MF |
15034 | _("PC-relative access using misaligned symbol (%lx)"), |
15035 | (long) S_GET_VALUE (fixP->fx_addsy)); | |
15036 | if ((fixP->fx_offset & 0x7) != 0) | |
15037 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15038 | _("PC-relative access using misaligned offset (%lx)"), | |
15039 | (long) fixP->fx_offset); | |
7361da2c AB |
15040 | |
15041 | gas_assert (!fixP->fx_done); | |
15042 | break; | |
15043 | ||
15044 | case BFD_RELOC_MIPS_19_PCREL_S2: | |
15045 | if ((*valP & 0x3) != 0) | |
15046 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15047 | _("PC-relative access to misaligned address (%lx)"), | |
0866e94c | 15048 | (long) (S_GET_VALUE (fixP->fx_addsy) + fixP->fx_offset)); |
7361da2c AB |
15049 | |
15050 | gas_assert (!fixP->fx_done); | |
15051 | break; | |
15052 | ||
15053 | case BFD_RELOC_HI16_S_PCREL: | |
15054 | case BFD_RELOC_LO16_PCREL: | |
15055 | gas_assert (!fixP->fx_done); | |
15056 | break; | |
15057 | ||
252b5132 | 15058 | case BFD_RELOC_16_PCREL_S2: |
a7ebbfdf | 15059 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 15060 | as_bad_where (fixP->fx_file, fixP->fx_line, |
1661c76c | 15061 | _("branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 15062 | |
54f4ddb3 TS |
15063 | /* We need to save the bits in the instruction since fixup_segment() |
15064 | might be deleting the relocation entry (i.e., a branch within | |
15065 | the current segment). */ | |
a7ebbfdf | 15066 | if (! fixP->fx_done) |
bb2d6cd7 | 15067 | break; |
252b5132 | 15068 | |
54f4ddb3 | 15069 | /* Update old instruction data. */ |
4d68580a | 15070 | insn = read_insn (buf); |
252b5132 | 15071 | |
a7ebbfdf TS |
15072 | if (*valP + 0x20000 <= 0x3ffff) |
15073 | { | |
15074 | insn |= (*valP >> 2) & 0xffff; | |
4d68580a | 15075 | write_insn (buf, insn); |
a7ebbfdf TS |
15076 | } |
15077 | else if (mips_pic == NO_PIC | |
15078 | && fixP->fx_done | |
15079 | && fixP->fx_frag->fr_address >= text_section->vma | |
15080 | && (fixP->fx_frag->fr_address | |
587aac4e | 15081 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
15082 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
15083 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
15084 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
15085 | { |
15086 | /* The branch offset is too large. If this is an | |
15087 | unconditional branch, and we are not generating PIC code, | |
15088 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
15089 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
15090 | insn = 0x0c000000; /* jal */ | |
252b5132 | 15091 | else |
a7ebbfdf TS |
15092 | insn = 0x08000000; /* j */ |
15093 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
15094 | fixP->fx_done = 0; | |
15095 | fixP->fx_addsy = section_symbol (text_section); | |
15096 | *valP += md_pcrel_from (fixP); | |
4d68580a | 15097 | write_insn (buf, insn); |
a7ebbfdf TS |
15098 | } |
15099 | else | |
15100 | { | |
15101 | /* If we got here, we have branch-relaxation disabled, | |
15102 | and there's nothing we can do to fix this instruction | |
15103 | without turning it into a longer sequence. */ | |
15104 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1661c76c | 15105 | _("branch out of range")); |
252b5132 | 15106 | } |
252b5132 RH |
15107 | break; |
15108 | ||
df58fc94 RS |
15109 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
15110 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
15111 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
15112 | /* We adjust the offset back to even. */ | |
15113 | if ((*valP & 0x1) != 0) | |
15114 | --(*valP); | |
15115 | ||
15116 | if (! fixP->fx_done) | |
15117 | break; | |
15118 | ||
15119 | /* Should never visit here, because we keep the relocation. */ | |
15120 | abort (); | |
15121 | break; | |
15122 | ||
252b5132 RH |
15123 | case BFD_RELOC_VTABLE_INHERIT: |
15124 | fixP->fx_done = 0; | |
15125 | if (fixP->fx_addsy | |
15126 | && !S_IS_DEFINED (fixP->fx_addsy) | |
15127 | && !S_IS_WEAK (fixP->fx_addsy)) | |
15128 | S_SET_WEAK (fixP->fx_addsy); | |
15129 | break; | |
15130 | ||
2f0c68f2 | 15131 | case BFD_RELOC_NONE: |
252b5132 RH |
15132 | case BFD_RELOC_VTABLE_ENTRY: |
15133 | fixP->fx_done = 0; | |
15134 | break; | |
15135 | ||
15136 | default: | |
b37df7c4 | 15137 | abort (); |
252b5132 | 15138 | } |
a7ebbfdf TS |
15139 | |
15140 | /* Remember value for tc_gen_reloc. */ | |
15141 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
15142 | } |
15143 | ||
252b5132 | 15144 | static symbolS * |
17a2f251 | 15145 | get_symbol (void) |
252b5132 RH |
15146 | { |
15147 | int c; | |
15148 | char *name; | |
15149 | symbolS *p; | |
15150 | ||
d02603dc | 15151 | c = get_symbol_name (&name); |
252b5132 | 15152 | p = (symbolS *) symbol_find_or_make (name); |
d02603dc | 15153 | (void) restore_line_pointer (c); |
252b5132 RH |
15154 | return p; |
15155 | } | |
15156 | ||
742a56fe RS |
15157 | /* Align the current frag to a given power of two. If a particular |
15158 | fill byte should be used, FILL points to an integer that contains | |
15159 | that byte, otherwise FILL is null. | |
15160 | ||
462427c4 RS |
15161 | This function used to have the comment: |
15162 | ||
15163 | The MIPS assembler also automatically adjusts any preceding label. | |
15164 | ||
15165 | The implementation therefore applied the adjustment to a maximum of | |
15166 | one label. However, other label adjustments are applied to batches | |
15167 | of labels, and adjusting just one caused problems when new labels | |
15168 | were added for the sake of debugging or unwind information. | |
15169 | We therefore adjust all preceding labels (given as LABELS) instead. */ | |
252b5132 RH |
15170 | |
15171 | static void | |
462427c4 | 15172 | mips_align (int to, int *fill, struct insn_label_list *labels) |
252b5132 | 15173 | { |
7d10b47d | 15174 | mips_emit_delays (); |
df58fc94 | 15175 | mips_record_compressed_mode (); |
742a56fe RS |
15176 | if (fill == NULL && subseg_text_p (now_seg)) |
15177 | frag_align_code (to, 0); | |
15178 | else | |
15179 | frag_align (to, fill ? *fill : 0, 0); | |
252b5132 | 15180 | record_alignment (now_seg, to); |
462427c4 | 15181 | mips_move_labels (labels, FALSE); |
252b5132 RH |
15182 | } |
15183 | ||
15184 | /* Align to a given power of two. .align 0 turns off the automatic | |
15185 | alignment used by the data creating pseudo-ops. */ | |
15186 | ||
15187 | static void | |
17a2f251 | 15188 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 15189 | { |
742a56fe | 15190 | int temp, fill_value, *fill_ptr; |
49954fb4 | 15191 | long max_alignment = 28; |
252b5132 | 15192 | |
54f4ddb3 | 15193 | /* o Note that the assembler pulls down any immediately preceding label |
252b5132 | 15194 | to the aligned address. |
54f4ddb3 | 15195 | o It's not documented but auto alignment is reinstated by |
252b5132 | 15196 | a .align pseudo instruction. |
54f4ddb3 | 15197 | o Note also that after auto alignment is turned off the mips assembler |
252b5132 | 15198 | issues an error on attempt to assemble an improperly aligned data item. |
54f4ddb3 | 15199 | We don't. */ |
252b5132 RH |
15200 | |
15201 | temp = get_absolute_expression (); | |
15202 | if (temp > max_alignment) | |
1661c76c | 15203 | as_bad (_("alignment too large, %d assumed"), temp = max_alignment); |
252b5132 RH |
15204 | else if (temp < 0) |
15205 | { | |
1661c76c | 15206 | as_warn (_("alignment negative, 0 assumed")); |
252b5132 RH |
15207 | temp = 0; |
15208 | } | |
15209 | if (*input_line_pointer == ',') | |
15210 | { | |
f9419b05 | 15211 | ++input_line_pointer; |
742a56fe RS |
15212 | fill_value = get_absolute_expression (); |
15213 | fill_ptr = &fill_value; | |
252b5132 RH |
15214 | } |
15215 | else | |
742a56fe | 15216 | fill_ptr = 0; |
252b5132 RH |
15217 | if (temp) |
15218 | { | |
a8dbcb85 TS |
15219 | segment_info_type *si = seg_info (now_seg); |
15220 | struct insn_label_list *l = si->label_list; | |
54f4ddb3 | 15221 | /* Auto alignment should be switched on by next section change. */ |
252b5132 | 15222 | auto_align = 1; |
462427c4 | 15223 | mips_align (temp, fill_ptr, l); |
252b5132 RH |
15224 | } |
15225 | else | |
15226 | { | |
15227 | auto_align = 0; | |
15228 | } | |
15229 | ||
15230 | demand_empty_rest_of_line (); | |
15231 | } | |
15232 | ||
252b5132 | 15233 | static void |
17a2f251 | 15234 | s_change_sec (int sec) |
252b5132 RH |
15235 | { |
15236 | segT seg; | |
15237 | ||
252b5132 RH |
15238 | /* The ELF backend needs to know that we are changing sections, so |
15239 | that .previous works correctly. We could do something like check | |
b6ff326e | 15240 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
15241 | as it would not be appropriate to use it in the section changing |
15242 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
15243 | This should be cleaner, somehow. */ | |
f3ded42a | 15244 | obj_elf_section_change_hook (); |
252b5132 | 15245 | |
7d10b47d | 15246 | mips_emit_delays (); |
6a32d874 | 15247 | |
252b5132 RH |
15248 | switch (sec) |
15249 | { | |
15250 | case 't': | |
15251 | s_text (0); | |
15252 | break; | |
15253 | case 'd': | |
15254 | s_data (0); | |
15255 | break; | |
15256 | case 'b': | |
15257 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
15258 | demand_empty_rest_of_line (); | |
15259 | break; | |
15260 | ||
15261 | case 'r': | |
4d0d148d TS |
15262 | seg = subseg_new (RDATA_SECTION_NAME, |
15263 | (subsegT) get_absolute_expression ()); | |
f3ded42a RS |
15264 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
15265 | | SEC_READONLY | SEC_RELOC | |
15266 | | SEC_DATA)); | |
15267 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
15268 | record_alignment (seg, 4); | |
4d0d148d | 15269 | demand_empty_rest_of_line (); |
252b5132 RH |
15270 | break; |
15271 | ||
15272 | case 's': | |
4d0d148d | 15273 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
f3ded42a RS |
15274 | bfd_set_section_flags (stdoutput, seg, |
15275 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
15276 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
15277 | record_alignment (seg, 4); | |
4d0d148d TS |
15278 | demand_empty_rest_of_line (); |
15279 | break; | |
998b3c36 MR |
15280 | |
15281 | case 'B': | |
15282 | seg = subseg_new (".sbss", (subsegT) get_absolute_expression ()); | |
f3ded42a RS |
15283 | bfd_set_section_flags (stdoutput, seg, SEC_ALLOC); |
15284 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
15285 | record_alignment (seg, 4); | |
998b3c36 MR |
15286 | demand_empty_rest_of_line (); |
15287 | break; | |
252b5132 RH |
15288 | } |
15289 | ||
15290 | auto_align = 1; | |
15291 | } | |
b34976b6 | 15292 | |
cca86cc8 | 15293 | void |
17a2f251 | 15294 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 15295 | { |
d02603dc | 15296 | char *saved_ilp; |
cca86cc8 | 15297 | char *section_name; |
d02603dc | 15298 | char c, endc; |
684022ea | 15299 | char next_c = 0; |
cca86cc8 SC |
15300 | int section_type; |
15301 | int section_flag; | |
15302 | int section_entry_size; | |
15303 | int section_alignment; | |
b34976b6 | 15304 | |
d02603dc NC |
15305 | saved_ilp = input_line_pointer; |
15306 | endc = get_symbol_name (§ion_name); | |
15307 | c = (endc == '"' ? input_line_pointer[1] : endc); | |
a816d1ed | 15308 | if (c) |
d02603dc | 15309 | next_c = input_line_pointer [(endc == '"' ? 2 : 1)]; |
cca86cc8 | 15310 | |
4cf0dd0d TS |
15311 | /* Do we have .section Name<,"flags">? */ |
15312 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 15313 | { |
d02603dc NC |
15314 | /* Just after name is now '\0'. */ |
15315 | (void) restore_line_pointer (endc); | |
15316 | input_line_pointer = saved_ilp; | |
cca86cc8 SC |
15317 | obj_elf_section (ignore); |
15318 | return; | |
15319 | } | |
d02603dc NC |
15320 | |
15321 | section_name = xstrdup (section_name); | |
15322 | c = restore_line_pointer (endc); | |
15323 | ||
cca86cc8 SC |
15324 | input_line_pointer++; |
15325 | ||
15326 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
15327 | if (c == ',') | |
15328 | section_type = get_absolute_expression (); | |
15329 | else | |
15330 | section_type = 0; | |
d02603dc | 15331 | |
cca86cc8 SC |
15332 | if (*input_line_pointer++ == ',') |
15333 | section_flag = get_absolute_expression (); | |
15334 | else | |
15335 | section_flag = 0; | |
d02603dc | 15336 | |
cca86cc8 SC |
15337 | if (*input_line_pointer++ == ',') |
15338 | section_entry_size = get_absolute_expression (); | |
15339 | else | |
15340 | section_entry_size = 0; | |
d02603dc | 15341 | |
cca86cc8 SC |
15342 | if (*input_line_pointer++ == ',') |
15343 | section_alignment = get_absolute_expression (); | |
15344 | else | |
15345 | section_alignment = 0; | |
d02603dc | 15346 | |
87975d2a AM |
15347 | /* FIXME: really ignore? */ |
15348 | (void) section_alignment; | |
cca86cc8 | 15349 | |
8ab8a5c8 RS |
15350 | /* When using the generic form of .section (as implemented by obj-elf.c), |
15351 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
15352 | traditionally had to fall back on the more common @progbits instead. | |
15353 | ||
15354 | There's nothing really harmful in this, since bfd will correct | |
15355 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 15356 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
15357 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
15358 | ||
15359 | Even so, we shouldn't force users of the MIPS .section syntax to | |
15360 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
15361 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
15362 | generic type-checking code. */ | |
15363 | if (section_type == SHT_MIPS_DWARF) | |
15364 | section_type = SHT_PROGBITS; | |
15365 | ||
cca86cc8 SC |
15366 | obj_elf_change_section (section_name, section_type, section_flag, |
15367 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
15368 | |
15369 | if (now_seg->name != section_name) | |
15370 | free (section_name); | |
cca86cc8 | 15371 | } |
252b5132 RH |
15372 | |
15373 | void | |
17a2f251 | 15374 | mips_enable_auto_align (void) |
252b5132 RH |
15375 | { |
15376 | auto_align = 1; | |
15377 | } | |
15378 | ||
15379 | static void | |
17a2f251 | 15380 | s_cons (int log_size) |
252b5132 | 15381 | { |
a8dbcb85 TS |
15382 | segment_info_type *si = seg_info (now_seg); |
15383 | struct insn_label_list *l = si->label_list; | |
252b5132 | 15384 | |
7d10b47d | 15385 | mips_emit_delays (); |
252b5132 | 15386 | if (log_size > 0 && auto_align) |
462427c4 | 15387 | mips_align (log_size, 0, l); |
252b5132 | 15388 | cons (1 << log_size); |
a1facbec | 15389 | mips_clear_insn_labels (); |
252b5132 RH |
15390 | } |
15391 | ||
15392 | static void | |
17a2f251 | 15393 | s_float_cons (int type) |
252b5132 | 15394 | { |
a8dbcb85 TS |
15395 | segment_info_type *si = seg_info (now_seg); |
15396 | struct insn_label_list *l = si->label_list; | |
252b5132 | 15397 | |
7d10b47d | 15398 | mips_emit_delays (); |
252b5132 RH |
15399 | |
15400 | if (auto_align) | |
49309057 ILT |
15401 | { |
15402 | if (type == 'd') | |
462427c4 | 15403 | mips_align (3, 0, l); |
49309057 | 15404 | else |
462427c4 | 15405 | mips_align (2, 0, l); |
49309057 | 15406 | } |
252b5132 | 15407 | |
252b5132 | 15408 | float_cons (type); |
a1facbec | 15409 | mips_clear_insn_labels (); |
252b5132 RH |
15410 | } |
15411 | ||
15412 | /* Handle .globl. We need to override it because on Irix 5 you are | |
15413 | permitted to say | |
15414 | .globl foo .text | |
15415 | where foo is an undefined symbol, to mean that foo should be | |
15416 | considered to be the address of a function. */ | |
15417 | ||
15418 | static void | |
17a2f251 | 15419 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
15420 | { |
15421 | char *name; | |
15422 | int c; | |
15423 | symbolS *symbolP; | |
15424 | flagword flag; | |
15425 | ||
8a06b769 | 15426 | do |
252b5132 | 15427 | { |
d02603dc | 15428 | c = get_symbol_name (&name); |
8a06b769 TS |
15429 | symbolP = symbol_find_or_make (name); |
15430 | S_SET_EXTERNAL (symbolP); | |
15431 | ||
252b5132 | 15432 | *input_line_pointer = c; |
d02603dc | 15433 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 | 15434 | |
8a06b769 TS |
15435 | /* On Irix 5, every global symbol that is not explicitly labelled as |
15436 | being a function is apparently labelled as being an object. */ | |
15437 | flag = BSF_OBJECT; | |
252b5132 | 15438 | |
8a06b769 TS |
15439 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
15440 | && (*input_line_pointer != ',')) | |
15441 | { | |
15442 | char *secname; | |
15443 | asection *sec; | |
15444 | ||
d02603dc | 15445 | c = get_symbol_name (&secname); |
8a06b769 TS |
15446 | sec = bfd_get_section_by_name (stdoutput, secname); |
15447 | if (sec == NULL) | |
15448 | as_bad (_("%s: no such section"), secname); | |
d02603dc | 15449 | (void) restore_line_pointer (c); |
8a06b769 TS |
15450 | |
15451 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
15452 | flag = BSF_FUNCTION; | |
15453 | } | |
15454 | ||
15455 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
15456 | ||
15457 | c = *input_line_pointer; | |
15458 | if (c == ',') | |
15459 | { | |
15460 | input_line_pointer++; | |
15461 | SKIP_WHITESPACE (); | |
15462 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
15463 | c = '\n'; | |
15464 | } | |
15465 | } | |
15466 | while (c == ','); | |
252b5132 | 15467 | |
252b5132 RH |
15468 | demand_empty_rest_of_line (); |
15469 | } | |
15470 | ||
15471 | static void | |
17a2f251 | 15472 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
15473 | { |
15474 | char *opt; | |
15475 | char c; | |
15476 | ||
d02603dc | 15477 | c = get_symbol_name (&opt); |
252b5132 RH |
15478 | |
15479 | if (*opt == 'O') | |
15480 | { | |
15481 | /* FIXME: What does this mean? */ | |
15482 | } | |
41a1578e | 15483 | else if (strncmp (opt, "pic", 3) == 0 && ISDIGIT (opt[3]) && opt[4] == '\0') |
252b5132 RH |
15484 | { |
15485 | int i; | |
15486 | ||
15487 | i = atoi (opt + 3); | |
668c5ebc MR |
15488 | if (i != 0 && i != 2) |
15489 | as_bad (_(".option pic%d not supported"), i); | |
15490 | else if (mips_pic == VXWORKS_PIC) | |
15491 | as_bad (_(".option pic%d not supported in VxWorks PIC mode"), i); | |
15492 | else if (i == 0) | |
252b5132 RH |
15493 | mips_pic = NO_PIC; |
15494 | else if (i == 2) | |
143d77c5 | 15495 | { |
8b828383 | 15496 | mips_pic = SVR4_PIC; |
143d77c5 EC |
15497 | mips_abicalls = TRUE; |
15498 | } | |
252b5132 | 15499 | |
4d0d148d | 15500 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
15501 | { |
15502 | if (g_switch_seen && g_switch_value != 0) | |
15503 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
15504 | g_switch_value = 0; | |
15505 | bfd_set_gp_size (stdoutput, 0); | |
15506 | } | |
15507 | } | |
15508 | else | |
1661c76c | 15509 | as_warn (_("unrecognized option \"%s\""), opt); |
252b5132 | 15510 | |
d02603dc | 15511 | (void) restore_line_pointer (c); |
252b5132 RH |
15512 | demand_empty_rest_of_line (); |
15513 | } | |
15514 | ||
15515 | /* This structure is used to hold a stack of .set values. */ | |
15516 | ||
e972090a NC |
15517 | struct mips_option_stack |
15518 | { | |
252b5132 RH |
15519 | struct mips_option_stack *next; |
15520 | struct mips_set_options options; | |
15521 | }; | |
15522 | ||
15523 | static struct mips_option_stack *mips_opts_stack; | |
15524 | ||
22522f88 MR |
15525 | /* Return status for .set/.module option handling. */ |
15526 | ||
15527 | enum code_option_type | |
15528 | { | |
15529 | /* Unrecognized option. */ | |
15530 | OPTION_TYPE_BAD = -1, | |
15531 | ||
15532 | /* Ordinary option. */ | |
15533 | OPTION_TYPE_NORMAL, | |
15534 | ||
15535 | /* ISA changing option. */ | |
15536 | OPTION_TYPE_ISA | |
15537 | }; | |
15538 | ||
15539 | /* Handle common .set/.module options. Return status indicating option | |
15540 | type. */ | |
15541 | ||
15542 | static enum code_option_type | |
919731af | 15543 | parse_code_option (char * name) |
252b5132 | 15544 | { |
22522f88 | 15545 | bfd_boolean isa_set = FALSE; |
c6278170 | 15546 | const struct mips_ase *ase; |
22522f88 | 15547 | |
919731af | 15548 | if (strncmp (name, "at=", 3) == 0) |
741fe287 MR |
15549 | { |
15550 | char *s = name + 3; | |
15551 | ||
15552 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, &mips_opts.at)) | |
1661c76c | 15553 | as_bad (_("unrecognized register name `%s'"), s); |
741fe287 | 15554 | } |
252b5132 | 15555 | else if (strcmp (name, "at") == 0) |
919731af | 15556 | mips_opts.at = ATREG; |
252b5132 | 15557 | else if (strcmp (name, "noat") == 0) |
919731af | 15558 | mips_opts.at = ZERO; |
252b5132 | 15559 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) |
919731af | 15560 | mips_opts.nomove = 0; |
252b5132 | 15561 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) |
919731af | 15562 | mips_opts.nomove = 1; |
252b5132 | 15563 | else if (strcmp (name, "bopt") == 0) |
919731af | 15564 | mips_opts.nobopt = 0; |
252b5132 | 15565 | else if (strcmp (name, "nobopt") == 0) |
919731af | 15566 | mips_opts.nobopt = 1; |
ad3fea08 | 15567 | else if (strcmp (name, "gp=32") == 0) |
bad1aba3 | 15568 | mips_opts.gp = 32; |
ad3fea08 | 15569 | else if (strcmp (name, "gp=64") == 0) |
919731af | 15570 | mips_opts.gp = 64; |
ad3fea08 | 15571 | else if (strcmp (name, "fp=32") == 0) |
0b35dfee | 15572 | mips_opts.fp = 32; |
351cdf24 MF |
15573 | else if (strcmp (name, "fp=xx") == 0) |
15574 | mips_opts.fp = 0; | |
ad3fea08 | 15575 | else if (strcmp (name, "fp=64") == 0) |
919731af | 15576 | mips_opts.fp = 64; |
037b32b9 AN |
15577 | else if (strcmp (name, "softfloat") == 0) |
15578 | mips_opts.soft_float = 1; | |
15579 | else if (strcmp (name, "hardfloat") == 0) | |
15580 | mips_opts.soft_float = 0; | |
15581 | else if (strcmp (name, "singlefloat") == 0) | |
15582 | mips_opts.single_float = 1; | |
15583 | else if (strcmp (name, "doublefloat") == 0) | |
15584 | mips_opts.single_float = 0; | |
351cdf24 MF |
15585 | else if (strcmp (name, "nooddspreg") == 0) |
15586 | mips_opts.oddspreg = 0; | |
15587 | else if (strcmp (name, "oddspreg") == 0) | |
15588 | mips_opts.oddspreg = 1; | |
252b5132 RH |
15589 | else if (strcmp (name, "mips16") == 0 |
15590 | || strcmp (name, "MIPS-16") == 0) | |
919731af | 15591 | mips_opts.mips16 = 1; |
252b5132 RH |
15592 | else if (strcmp (name, "nomips16") == 0 |
15593 | || strcmp (name, "noMIPS-16") == 0) | |
15594 | mips_opts.mips16 = 0; | |
df58fc94 | 15595 | else if (strcmp (name, "micromips") == 0) |
919731af | 15596 | mips_opts.micromips = 1; |
df58fc94 RS |
15597 | else if (strcmp (name, "nomicromips") == 0) |
15598 | mips_opts.micromips = 0; | |
c6278170 RS |
15599 | else if (name[0] == 'n' |
15600 | && name[1] == 'o' | |
15601 | && (ase = mips_lookup_ase (name + 2))) | |
919731af | 15602 | mips_set_ase (ase, &mips_opts, FALSE); |
c6278170 | 15603 | else if ((ase = mips_lookup_ase (name))) |
919731af | 15604 | mips_set_ase (ase, &mips_opts, TRUE); |
1a2c1fad | 15605 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 15606 | { |
1a2c1fad CD |
15607 | /* Permit the user to change the ISA and architecture on the fly. |
15608 | Needless to say, misuse can cause serious problems. */ | |
919731af | 15609 | if (strncmp (name, "arch=", 5) == 0) |
1a2c1fad CD |
15610 | { |
15611 | const struct mips_cpu_info *p; | |
15612 | ||
919731af | 15613 | p = mips_parse_cpu ("internal use", name + 5); |
1a2c1fad CD |
15614 | if (!p) |
15615 | as_bad (_("unknown architecture %s"), name + 5); | |
15616 | else | |
15617 | { | |
15618 | mips_opts.arch = p->cpu; | |
15619 | mips_opts.isa = p->isa; | |
22522f88 | 15620 | isa_set = TRUE; |
1a2c1fad CD |
15621 | } |
15622 | } | |
81a21e38 TS |
15623 | else if (strncmp (name, "mips", 4) == 0) |
15624 | { | |
15625 | const struct mips_cpu_info *p; | |
15626 | ||
919731af | 15627 | p = mips_parse_cpu ("internal use", name); |
81a21e38 TS |
15628 | if (!p) |
15629 | as_bad (_("unknown ISA level %s"), name + 4); | |
15630 | else | |
15631 | { | |
15632 | mips_opts.arch = p->cpu; | |
15633 | mips_opts.isa = p->isa; | |
22522f88 | 15634 | isa_set = TRUE; |
81a21e38 TS |
15635 | } |
15636 | } | |
af7ee8bf | 15637 | else |
81a21e38 | 15638 | as_bad (_("unknown ISA or architecture %s"), name); |
252b5132 RH |
15639 | } |
15640 | else if (strcmp (name, "autoextend") == 0) | |
15641 | mips_opts.noautoextend = 0; | |
15642 | else if (strcmp (name, "noautoextend") == 0) | |
15643 | mips_opts.noautoextend = 1; | |
833794fc MR |
15644 | else if (strcmp (name, "insn32") == 0) |
15645 | mips_opts.insn32 = TRUE; | |
15646 | else if (strcmp (name, "noinsn32") == 0) | |
15647 | mips_opts.insn32 = FALSE; | |
919731af | 15648 | else if (strcmp (name, "sym32") == 0) |
15649 | mips_opts.sym32 = TRUE; | |
15650 | else if (strcmp (name, "nosym32") == 0) | |
15651 | mips_opts.sym32 = FALSE; | |
15652 | else | |
22522f88 MR |
15653 | return OPTION_TYPE_BAD; |
15654 | ||
15655 | return isa_set ? OPTION_TYPE_ISA : OPTION_TYPE_NORMAL; | |
919731af | 15656 | } |
15657 | ||
15658 | /* Handle the .set pseudo-op. */ | |
15659 | ||
15660 | static void | |
15661 | s_mipsset (int x ATTRIBUTE_UNUSED) | |
15662 | { | |
22522f88 | 15663 | enum code_option_type type = OPTION_TYPE_NORMAL; |
919731af | 15664 | char *name = input_line_pointer, ch; |
919731af | 15665 | |
15666 | file_mips_check_options (); | |
15667 | ||
15668 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
15669 | ++input_line_pointer; | |
15670 | ch = *input_line_pointer; | |
15671 | *input_line_pointer = '\0'; | |
15672 | ||
15673 | if (strchr (name, ',')) | |
15674 | { | |
15675 | /* Generic ".set" directive; use the generic handler. */ | |
15676 | *input_line_pointer = ch; | |
15677 | input_line_pointer = name; | |
15678 | s_set (0); | |
15679 | return; | |
15680 | } | |
15681 | ||
15682 | if (strcmp (name, "reorder") == 0) | |
15683 | { | |
15684 | if (mips_opts.noreorder) | |
15685 | end_noreorder (); | |
15686 | } | |
15687 | else if (strcmp (name, "noreorder") == 0) | |
15688 | { | |
15689 | if (!mips_opts.noreorder) | |
15690 | start_noreorder (); | |
15691 | } | |
15692 | else if (strcmp (name, "macro") == 0) | |
15693 | mips_opts.warn_about_macros = 0; | |
15694 | else if (strcmp (name, "nomacro") == 0) | |
15695 | { | |
15696 | if (mips_opts.noreorder == 0) | |
15697 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
15698 | mips_opts.warn_about_macros = 1; | |
15699 | } | |
15700 | else if (strcmp (name, "gp=default") == 0) | |
15701 | mips_opts.gp = file_mips_opts.gp; | |
15702 | else if (strcmp (name, "fp=default") == 0) | |
15703 | mips_opts.fp = file_mips_opts.fp; | |
15704 | else if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) | |
15705 | { | |
15706 | mips_opts.isa = file_mips_opts.isa; | |
15707 | mips_opts.arch = file_mips_opts.arch; | |
15708 | mips_opts.gp = file_mips_opts.gp; | |
15709 | mips_opts.fp = file_mips_opts.fp; | |
15710 | } | |
252b5132 RH |
15711 | else if (strcmp (name, "push") == 0) |
15712 | { | |
15713 | struct mips_option_stack *s; | |
15714 | ||
325801bd | 15715 | s = XNEW (struct mips_option_stack); |
252b5132 RH |
15716 | s->next = mips_opts_stack; |
15717 | s->options = mips_opts; | |
15718 | mips_opts_stack = s; | |
15719 | } | |
15720 | else if (strcmp (name, "pop") == 0) | |
15721 | { | |
15722 | struct mips_option_stack *s; | |
15723 | ||
15724 | s = mips_opts_stack; | |
15725 | if (s == NULL) | |
15726 | as_bad (_(".set pop with no .set push")); | |
15727 | else | |
15728 | { | |
15729 | /* If we're changing the reorder mode we need to handle | |
15730 | delay slots correctly. */ | |
15731 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 15732 | start_noreorder (); |
252b5132 | 15733 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 15734 | end_noreorder (); |
252b5132 RH |
15735 | |
15736 | mips_opts = s->options; | |
15737 | mips_opts_stack = s->next; | |
15738 | free (s); | |
15739 | } | |
15740 | } | |
22522f88 MR |
15741 | else |
15742 | { | |
15743 | type = parse_code_option (name); | |
15744 | if (type == OPTION_TYPE_BAD) | |
15745 | as_warn (_("tried to set unrecognized symbol: %s\n"), name); | |
15746 | } | |
919731af | 15747 | |
15748 | /* The use of .set [arch|cpu]= historically 'fixes' the width of gp and fp | |
15749 | registers based on what is supported by the arch/cpu. */ | |
22522f88 | 15750 | if (type == OPTION_TYPE_ISA) |
e6559e01 | 15751 | { |
919731af | 15752 | switch (mips_opts.isa) |
15753 | { | |
15754 | case 0: | |
15755 | break; | |
15756 | case ISA_MIPS1: | |
351cdf24 MF |
15757 | /* MIPS I cannot support FPXX. */ |
15758 | mips_opts.fp = 32; | |
15759 | /* fall-through. */ | |
919731af | 15760 | case ISA_MIPS2: |
15761 | case ISA_MIPS32: | |
15762 | case ISA_MIPS32R2: | |
15763 | case ISA_MIPS32R3: | |
15764 | case ISA_MIPS32R5: | |
15765 | mips_opts.gp = 32; | |
351cdf24 MF |
15766 | if (mips_opts.fp != 0) |
15767 | mips_opts.fp = 32; | |
919731af | 15768 | break; |
7361da2c AB |
15769 | case ISA_MIPS32R6: |
15770 | mips_opts.gp = 32; | |
15771 | mips_opts.fp = 64; | |
15772 | break; | |
919731af | 15773 | case ISA_MIPS3: |
15774 | case ISA_MIPS4: | |
15775 | case ISA_MIPS5: | |
15776 | case ISA_MIPS64: | |
15777 | case ISA_MIPS64R2: | |
15778 | case ISA_MIPS64R3: | |
15779 | case ISA_MIPS64R5: | |
7361da2c | 15780 | case ISA_MIPS64R6: |
919731af | 15781 | mips_opts.gp = 64; |
351cdf24 MF |
15782 | if (mips_opts.fp != 0) |
15783 | { | |
15784 | if (mips_opts.arch == CPU_R5900) | |
15785 | mips_opts.fp = 32; | |
15786 | else | |
15787 | mips_opts.fp = 64; | |
15788 | } | |
919731af | 15789 | break; |
15790 | default: | |
15791 | as_bad (_("unknown ISA level %s"), name + 4); | |
15792 | break; | |
15793 | } | |
e6559e01 | 15794 | } |
919731af | 15795 | |
15796 | mips_check_options (&mips_opts, FALSE); | |
15797 | ||
15798 | mips_check_isa_supports_ases (); | |
15799 | *input_line_pointer = ch; | |
15800 | demand_empty_rest_of_line (); | |
15801 | } | |
15802 | ||
15803 | /* Handle the .module pseudo-op. */ | |
15804 | ||
15805 | static void | |
15806 | s_module (int ignore ATTRIBUTE_UNUSED) | |
15807 | { | |
15808 | char *name = input_line_pointer, ch; | |
15809 | ||
15810 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
15811 | ++input_line_pointer; | |
15812 | ch = *input_line_pointer; | |
15813 | *input_line_pointer = '\0'; | |
15814 | ||
15815 | if (!file_mips_opts_checked) | |
252b5132 | 15816 | { |
22522f88 | 15817 | if (parse_code_option (name) == OPTION_TYPE_BAD) |
919731af | 15818 | as_bad (_(".module used with unrecognized symbol: %s\n"), name); |
15819 | ||
15820 | /* Update module level settings from mips_opts. */ | |
15821 | file_mips_opts = mips_opts; | |
252b5132 | 15822 | } |
919731af | 15823 | else |
15824 | as_bad (_(".module is not permitted after generating code")); | |
15825 | ||
252b5132 RH |
15826 | *input_line_pointer = ch; |
15827 | demand_empty_rest_of_line (); | |
15828 | } | |
15829 | ||
15830 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
15831 | .option pic2. It means to generate SVR4 PIC calls. */ | |
15832 | ||
15833 | static void | |
17a2f251 | 15834 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
15835 | { |
15836 | mips_pic = SVR4_PIC; | |
143d77c5 | 15837 | mips_abicalls = TRUE; |
4d0d148d TS |
15838 | |
15839 | if (g_switch_seen && g_switch_value != 0) | |
15840 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
15841 | g_switch_value = 0; | |
15842 | ||
252b5132 RH |
15843 | bfd_set_gp_size (stdoutput, 0); |
15844 | demand_empty_rest_of_line (); | |
15845 | } | |
15846 | ||
15847 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
15848 | PIC code. It sets the $gp register for the function based on the | |
15849 | function address, which is in the register named in the argument. | |
15850 | This uses a relocation against _gp_disp, which is handled specially | |
15851 | by the linker. The result is: | |
15852 | lui $gp,%hi(_gp_disp) | |
15853 | addiu $gp,$gp,%lo(_gp_disp) | |
15854 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
15855 | The .cpload argument is normally $25 == $t9. |
15856 | ||
15857 | The -mno-shared option changes this to: | |
bbe506e8 TS |
15858 | lui $gp,%hi(__gnu_local_gp) |
15859 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
15860 | and the argument is ignored. This saves an instruction, but the |
15861 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
15862 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
15863 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
15864 | |
15865 | static void | |
17a2f251 | 15866 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
15867 | { |
15868 | expressionS ex; | |
aa6975fb ILT |
15869 | int reg; |
15870 | int in_shared; | |
252b5132 | 15871 | |
919731af | 15872 | file_mips_check_options (); |
15873 | ||
6478892d TS |
15874 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
15875 | .cpload is ignored. */ | |
15876 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
15877 | { |
15878 | s_ignore (0); | |
15879 | return; | |
15880 | } | |
15881 | ||
a276b80c MR |
15882 | if (mips_opts.mips16) |
15883 | { | |
15884 | as_bad (_("%s not supported in MIPS16 mode"), ".cpload"); | |
15885 | ignore_rest_of_line (); | |
15886 | return; | |
15887 | } | |
15888 | ||
d3ecfc59 | 15889 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
15890 | if (mips_opts.noreorder == 0) |
15891 | as_warn (_(".cpload not in noreorder section")); | |
15892 | ||
aa6975fb ILT |
15893 | reg = tc_get_register (0); |
15894 | ||
15895 | /* If we need to produce a 64-bit address, we are better off using | |
15896 | the default instruction sequence. */ | |
aed1a261 | 15897 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 15898 | |
252b5132 | 15899 | ex.X_op = O_symbol; |
bbe506e8 TS |
15900 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
15901 | "__gnu_local_gp"); | |
252b5132 RH |
15902 | ex.X_op_symbol = NULL; |
15903 | ex.X_add_number = 0; | |
15904 | ||
15905 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 15906 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 15907 | |
8a75745d MR |
15908 | mips_mark_labels (); |
15909 | mips_assembling_insn = TRUE; | |
15910 | ||
584892a6 | 15911 | macro_start (); |
67c0d1eb RS |
15912 | macro_build_lui (&ex, mips_gp_register); |
15913 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 15914 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
15915 | if (in_shared) |
15916 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
15917 | mips_gp_register, reg); | |
584892a6 | 15918 | macro_end (); |
252b5132 | 15919 | |
8a75745d | 15920 | mips_assembling_insn = FALSE; |
252b5132 RH |
15921 | demand_empty_rest_of_line (); |
15922 | } | |
15923 | ||
6478892d TS |
15924 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
15925 | .cpsetup $reg1, offset|$reg2, label | |
15926 | ||
15927 | If offset is given, this results in: | |
15928 | sd $gp, offset($sp) | |
956cd1d6 | 15929 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
15930 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
15931 | daddu $gp, $gp, $reg1 | |
6478892d TS |
15932 | |
15933 | If $reg2 is given, this results in: | |
40fc1451 | 15934 | or $reg2, $gp, $0 |
956cd1d6 | 15935 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
15936 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
15937 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
15938 | $reg1 is normally $25 == $t9. |
15939 | ||
15940 | The -mno-shared option replaces the last three instructions with | |
15941 | lui $gp,%hi(_gp) | |
54f4ddb3 | 15942 | addiu $gp,$gp,%lo(_gp) */ |
aa6975fb | 15943 | |
6478892d | 15944 | static void |
17a2f251 | 15945 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
15946 | { |
15947 | expressionS ex_off; | |
15948 | expressionS ex_sym; | |
15949 | int reg1; | |
6478892d | 15950 | |
919731af | 15951 | file_mips_check_options (); |
15952 | ||
8586fc66 | 15953 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
15954 | We also need NewABI support. */ |
15955 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
15956 | { | |
15957 | s_ignore (0); | |
15958 | return; | |
15959 | } | |
15960 | ||
a276b80c MR |
15961 | if (mips_opts.mips16) |
15962 | { | |
15963 | as_bad (_("%s not supported in MIPS16 mode"), ".cpsetup"); | |
15964 | ignore_rest_of_line (); | |
15965 | return; | |
15966 | } | |
15967 | ||
6478892d TS |
15968 | reg1 = tc_get_register (0); |
15969 | SKIP_WHITESPACE (); | |
15970 | if (*input_line_pointer != ',') | |
15971 | { | |
15972 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
15973 | return; | |
15974 | } | |
15975 | else | |
80245285 | 15976 | ++input_line_pointer; |
6478892d TS |
15977 | SKIP_WHITESPACE (); |
15978 | if (*input_line_pointer == '$') | |
80245285 TS |
15979 | { |
15980 | mips_cpreturn_register = tc_get_register (0); | |
15981 | mips_cpreturn_offset = -1; | |
15982 | } | |
6478892d | 15983 | else |
80245285 TS |
15984 | { |
15985 | mips_cpreturn_offset = get_absolute_expression (); | |
15986 | mips_cpreturn_register = -1; | |
15987 | } | |
6478892d TS |
15988 | SKIP_WHITESPACE (); |
15989 | if (*input_line_pointer != ',') | |
15990 | { | |
15991 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
15992 | return; | |
15993 | } | |
15994 | else | |
f9419b05 | 15995 | ++input_line_pointer; |
6478892d | 15996 | SKIP_WHITESPACE (); |
f21f8242 | 15997 | expression (&ex_sym); |
6478892d | 15998 | |
8a75745d MR |
15999 | mips_mark_labels (); |
16000 | mips_assembling_insn = TRUE; | |
16001 | ||
584892a6 | 16002 | macro_start (); |
6478892d TS |
16003 | if (mips_cpreturn_register == -1) |
16004 | { | |
16005 | ex_off.X_op = O_constant; | |
16006 | ex_off.X_add_symbol = NULL; | |
16007 | ex_off.X_op_symbol = NULL; | |
16008 | ex_off.X_add_number = mips_cpreturn_offset; | |
16009 | ||
67c0d1eb | 16010 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 16011 | BFD_RELOC_LO16, SP); |
6478892d TS |
16012 | } |
16013 | else | |
40fc1451 | 16014 | move_register (mips_cpreturn_register, mips_gp_register); |
6478892d | 16015 | |
aed1a261 | 16016 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb | 16017 | { |
df58fc94 | 16018 | macro_build (&ex_sym, "lui", LUI_FMT, mips_gp_register, |
aa6975fb ILT |
16019 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, |
16020 | BFD_RELOC_HI16_S); | |
16021 | ||
16022 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
16023 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
16024 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
16025 | ||
16026 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
16027 | mips_gp_register, reg1); | |
16028 | } | |
16029 | else | |
16030 | { | |
16031 | expressionS ex; | |
16032 | ||
16033 | ex.X_op = O_symbol; | |
4184909a | 16034 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
16035 | ex.X_op_symbol = NULL; |
16036 | ex.X_add_number = 0; | |
6e1304d8 | 16037 | |
aa6975fb ILT |
16038 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
16039 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
16040 | ||
16041 | macro_build_lui (&ex, mips_gp_register); | |
16042 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
16043 | mips_gp_register, BFD_RELOC_LO16); | |
16044 | } | |
f21f8242 | 16045 | |
584892a6 | 16046 | macro_end (); |
6478892d | 16047 | |
8a75745d | 16048 | mips_assembling_insn = FALSE; |
6478892d TS |
16049 | demand_empty_rest_of_line (); |
16050 | } | |
16051 | ||
16052 | static void | |
17a2f251 | 16053 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d | 16054 | { |
919731af | 16055 | file_mips_check_options (); |
16056 | ||
6478892d | 16057 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, |
54f4ddb3 | 16058 | .cplocal is ignored. */ |
6478892d TS |
16059 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) |
16060 | { | |
16061 | s_ignore (0); | |
16062 | return; | |
16063 | } | |
16064 | ||
a276b80c MR |
16065 | if (mips_opts.mips16) |
16066 | { | |
16067 | as_bad (_("%s not supported in MIPS16 mode"), ".cplocal"); | |
16068 | ignore_rest_of_line (); | |
16069 | return; | |
16070 | } | |
16071 | ||
6478892d | 16072 | mips_gp_register = tc_get_register (0); |
85b51719 | 16073 | demand_empty_rest_of_line (); |
6478892d TS |
16074 | } |
16075 | ||
252b5132 RH |
16076 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
16077 | offset from $sp. The offset is remembered, and after making a PIC | |
16078 | call $gp is restored from that location. */ | |
16079 | ||
16080 | static void | |
17a2f251 | 16081 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16082 | { |
16083 | expressionS ex; | |
252b5132 | 16084 | |
919731af | 16085 | file_mips_check_options (); |
16086 | ||
6478892d | 16087 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 16088 | .cprestore is ignored. */ |
6478892d | 16089 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
16090 | { |
16091 | s_ignore (0); | |
16092 | return; | |
16093 | } | |
16094 | ||
a276b80c MR |
16095 | if (mips_opts.mips16) |
16096 | { | |
16097 | as_bad (_("%s not supported in MIPS16 mode"), ".cprestore"); | |
16098 | ignore_rest_of_line (); | |
16099 | return; | |
16100 | } | |
16101 | ||
252b5132 | 16102 | mips_cprestore_offset = get_absolute_expression (); |
7a621144 | 16103 | mips_cprestore_valid = 1; |
252b5132 RH |
16104 | |
16105 | ex.X_op = O_constant; | |
16106 | ex.X_add_symbol = NULL; | |
16107 | ex.X_op_symbol = NULL; | |
16108 | ex.X_add_number = mips_cprestore_offset; | |
16109 | ||
8a75745d MR |
16110 | mips_mark_labels (); |
16111 | mips_assembling_insn = TRUE; | |
16112 | ||
584892a6 | 16113 | macro_start (); |
67c0d1eb RS |
16114 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
16115 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 16116 | macro_end (); |
252b5132 | 16117 | |
8a75745d | 16118 | mips_assembling_insn = FALSE; |
252b5132 RH |
16119 | demand_empty_rest_of_line (); |
16120 | } | |
16121 | ||
6478892d | 16122 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 16123 | was given in the preceding .cpsetup, it results in: |
6478892d | 16124 | ld $gp, offset($sp) |
76b3015f | 16125 | |
6478892d | 16126 | If a register $reg2 was given there, it results in: |
40fc1451 | 16127 | or $gp, $reg2, $0 */ |
54f4ddb3 | 16128 | |
6478892d | 16129 | static void |
17a2f251 | 16130 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16131 | { |
16132 | expressionS ex; | |
6478892d | 16133 | |
919731af | 16134 | file_mips_check_options (); |
16135 | ||
6478892d TS |
16136 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. |
16137 | We also need NewABI support. */ | |
16138 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16139 | { | |
16140 | s_ignore (0); | |
16141 | return; | |
16142 | } | |
16143 | ||
a276b80c MR |
16144 | if (mips_opts.mips16) |
16145 | { | |
16146 | as_bad (_("%s not supported in MIPS16 mode"), ".cpreturn"); | |
16147 | ignore_rest_of_line (); | |
16148 | return; | |
16149 | } | |
16150 | ||
8a75745d MR |
16151 | mips_mark_labels (); |
16152 | mips_assembling_insn = TRUE; | |
16153 | ||
584892a6 | 16154 | macro_start (); |
6478892d TS |
16155 | if (mips_cpreturn_register == -1) |
16156 | { | |
16157 | ex.X_op = O_constant; | |
16158 | ex.X_add_symbol = NULL; | |
16159 | ex.X_op_symbol = NULL; | |
16160 | ex.X_add_number = mips_cpreturn_offset; | |
16161 | ||
67c0d1eb | 16162 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
16163 | } |
16164 | else | |
40fc1451 SD |
16165 | move_register (mips_gp_register, mips_cpreturn_register); |
16166 | ||
584892a6 | 16167 | macro_end (); |
6478892d | 16168 | |
8a75745d | 16169 | mips_assembling_insn = FALSE; |
6478892d TS |
16170 | demand_empty_rest_of_line (); |
16171 | } | |
16172 | ||
d0f13682 CLT |
16173 | /* Handle a .dtprelword, .dtpreldword, .tprelword, or .tpreldword |
16174 | pseudo-op; DIRSTR says which. The pseudo-op generates a BYTES-size | |
16175 | DTP- or TP-relative relocation of type RTYPE, for use in either DWARF | |
16176 | debug information or MIPS16 TLS. */ | |
741d6ea8 JM |
16177 | |
16178 | static void | |
d0f13682 CLT |
16179 | s_tls_rel_directive (const size_t bytes, const char *dirstr, |
16180 | bfd_reloc_code_real_type rtype) | |
741d6ea8 JM |
16181 | { |
16182 | expressionS ex; | |
16183 | char *p; | |
16184 | ||
16185 | expression (&ex); | |
16186 | ||
16187 | if (ex.X_op != O_symbol) | |
16188 | { | |
1661c76c | 16189 | as_bad (_("unsupported use of %s"), dirstr); |
741d6ea8 JM |
16190 | ignore_rest_of_line (); |
16191 | } | |
16192 | ||
16193 | p = frag_more (bytes); | |
16194 | md_number_to_chars (p, 0, bytes); | |
d0f13682 | 16195 | fix_new_exp (frag_now, p - frag_now->fr_literal, bytes, &ex, FALSE, rtype); |
741d6ea8 | 16196 | demand_empty_rest_of_line (); |
de64cffd | 16197 | mips_clear_insn_labels (); |
741d6ea8 JM |
16198 | } |
16199 | ||
16200 | /* Handle .dtprelword. */ | |
16201 | ||
16202 | static void | |
16203 | s_dtprelword (int ignore ATTRIBUTE_UNUSED) | |
16204 | { | |
d0f13682 | 16205 | s_tls_rel_directive (4, ".dtprelword", BFD_RELOC_MIPS_TLS_DTPREL32); |
741d6ea8 JM |
16206 | } |
16207 | ||
16208 | /* Handle .dtpreldword. */ | |
16209 | ||
16210 | static void | |
16211 | s_dtpreldword (int ignore ATTRIBUTE_UNUSED) | |
16212 | { | |
d0f13682 CLT |
16213 | s_tls_rel_directive (8, ".dtpreldword", BFD_RELOC_MIPS_TLS_DTPREL64); |
16214 | } | |
16215 | ||
16216 | /* Handle .tprelword. */ | |
16217 | ||
16218 | static void | |
16219 | s_tprelword (int ignore ATTRIBUTE_UNUSED) | |
16220 | { | |
16221 | s_tls_rel_directive (4, ".tprelword", BFD_RELOC_MIPS_TLS_TPREL32); | |
16222 | } | |
16223 | ||
16224 | /* Handle .tpreldword. */ | |
16225 | ||
16226 | static void | |
16227 | s_tpreldword (int ignore ATTRIBUTE_UNUSED) | |
16228 | { | |
16229 | s_tls_rel_directive (8, ".tpreldword", BFD_RELOC_MIPS_TLS_TPREL64); | |
741d6ea8 JM |
16230 | } |
16231 | ||
6478892d TS |
16232 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC |
16233 | code. It sets the offset to use in gp_rel relocations. */ | |
16234 | ||
16235 | static void | |
17a2f251 | 16236 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16237 | { |
16238 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
16239 | We also need NewABI support. */ | |
16240 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16241 | { | |
16242 | s_ignore (0); | |
16243 | return; | |
16244 | } | |
16245 | ||
def2e0dd | 16246 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
16247 | |
16248 | demand_empty_rest_of_line (); | |
16249 | } | |
16250 | ||
252b5132 RH |
16251 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
16252 | code. It generates a 32 bit GP relative reloc. */ | |
16253 | ||
16254 | static void | |
17a2f251 | 16255 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16256 | { |
a8dbcb85 TS |
16257 | segment_info_type *si; |
16258 | struct insn_label_list *l; | |
252b5132 RH |
16259 | expressionS ex; |
16260 | char *p; | |
16261 | ||
16262 | /* When not generating PIC code, this is treated as .word. */ | |
16263 | if (mips_pic != SVR4_PIC) | |
16264 | { | |
16265 | s_cons (2); | |
16266 | return; | |
16267 | } | |
16268 | ||
a8dbcb85 TS |
16269 | si = seg_info (now_seg); |
16270 | l = si->label_list; | |
7d10b47d | 16271 | mips_emit_delays (); |
252b5132 | 16272 | if (auto_align) |
462427c4 | 16273 | mips_align (2, 0, l); |
252b5132 RH |
16274 | |
16275 | expression (&ex); | |
a1facbec | 16276 | mips_clear_insn_labels (); |
252b5132 RH |
16277 | |
16278 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16279 | { | |
1661c76c | 16280 | as_bad (_("unsupported use of .gpword")); |
252b5132 RH |
16281 | ignore_rest_of_line (); |
16282 | } | |
16283 | ||
16284 | p = frag_more (4); | |
17a2f251 | 16285 | md_number_to_chars (p, 0, 4); |
b34976b6 | 16286 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 16287 | BFD_RELOC_GPREL32); |
252b5132 RH |
16288 | |
16289 | demand_empty_rest_of_line (); | |
16290 | } | |
16291 | ||
10181a0d | 16292 | static void |
17a2f251 | 16293 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d | 16294 | { |
a8dbcb85 TS |
16295 | segment_info_type *si; |
16296 | struct insn_label_list *l; | |
10181a0d AO |
16297 | expressionS ex; |
16298 | char *p; | |
16299 | ||
16300 | /* When not generating PIC code, this is treated as .dword. */ | |
16301 | if (mips_pic != SVR4_PIC) | |
16302 | { | |
16303 | s_cons (3); | |
16304 | return; | |
16305 | } | |
16306 | ||
a8dbcb85 TS |
16307 | si = seg_info (now_seg); |
16308 | l = si->label_list; | |
7d10b47d | 16309 | mips_emit_delays (); |
10181a0d | 16310 | if (auto_align) |
462427c4 | 16311 | mips_align (3, 0, l); |
10181a0d AO |
16312 | |
16313 | expression (&ex); | |
a1facbec | 16314 | mips_clear_insn_labels (); |
10181a0d AO |
16315 | |
16316 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16317 | { | |
1661c76c | 16318 | as_bad (_("unsupported use of .gpdword")); |
10181a0d AO |
16319 | ignore_rest_of_line (); |
16320 | } | |
16321 | ||
16322 | p = frag_more (8); | |
17a2f251 | 16323 | md_number_to_chars (p, 0, 8); |
a105a300 | 16324 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 16325 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
16326 | |
16327 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
16328 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
16329 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
16330 | |
16331 | demand_empty_rest_of_line (); | |
16332 | } | |
16333 | ||
a3f278e2 CM |
16334 | /* Handle the .ehword pseudo-op. This is used when generating unwinding |
16335 | tables. It generates a R_MIPS_EH reloc. */ | |
16336 | ||
16337 | static void | |
16338 | s_ehword (int ignore ATTRIBUTE_UNUSED) | |
16339 | { | |
16340 | expressionS ex; | |
16341 | char *p; | |
16342 | ||
16343 | mips_emit_delays (); | |
16344 | ||
16345 | expression (&ex); | |
16346 | mips_clear_insn_labels (); | |
16347 | ||
16348 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16349 | { | |
1661c76c | 16350 | as_bad (_("unsupported use of .ehword")); |
a3f278e2 CM |
16351 | ignore_rest_of_line (); |
16352 | } | |
16353 | ||
16354 | p = frag_more (4); | |
16355 | md_number_to_chars (p, 0, 4); | |
16356 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, | |
2f0c68f2 | 16357 | BFD_RELOC_32_PCREL); |
a3f278e2 CM |
16358 | |
16359 | demand_empty_rest_of_line (); | |
16360 | } | |
16361 | ||
252b5132 RH |
16362 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
16363 | tables in SVR4 PIC code. */ | |
16364 | ||
16365 | static void | |
17a2f251 | 16366 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16367 | { |
252b5132 RH |
16368 | int reg; |
16369 | ||
919731af | 16370 | file_mips_check_options (); |
16371 | ||
10181a0d AO |
16372 | /* This is ignored when not generating SVR4 PIC code. */ |
16373 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
16374 | { |
16375 | s_ignore (0); | |
16376 | return; | |
16377 | } | |
16378 | ||
8a75745d MR |
16379 | mips_mark_labels (); |
16380 | mips_assembling_insn = TRUE; | |
16381 | ||
252b5132 | 16382 | /* Add $gp to the register named as an argument. */ |
584892a6 | 16383 | macro_start (); |
252b5132 | 16384 | reg = tc_get_register (0); |
67c0d1eb | 16385 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 16386 | macro_end (); |
252b5132 | 16387 | |
8a75745d | 16388 | mips_assembling_insn = FALSE; |
bdaaa2e1 | 16389 | demand_empty_rest_of_line (); |
252b5132 RH |
16390 | } |
16391 | ||
16392 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
df58fc94 | 16393 | mips16/micromips mode. This permits the linker to handle them specially, |
252b5132 RH |
16394 | such as generating jalx instructions when needed. We also make |
16395 | them odd for the duration of the assembly, in order to generate the | |
16396 | right sort of code. We will make them even in the adjust_symtab | |
16397 | routine, while leaving them marked. This is convenient for the | |
16398 | debugger and the disassembler. The linker knows to make them odd | |
16399 | again. */ | |
16400 | ||
16401 | static void | |
17a2f251 | 16402 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16403 | { |
7bb01e2d MR |
16404 | file_mips_check_options (); |
16405 | file_ase_mips16 |= mips_opts.mips16; | |
16406 | file_ase_micromips |= mips_opts.micromips; | |
16407 | ||
df58fc94 | 16408 | mips_mark_labels (); |
252b5132 RH |
16409 | |
16410 | demand_empty_rest_of_line (); | |
16411 | } | |
16412 | ||
ba92f887 MR |
16413 | /* Handle the .nan pseudo-op. */ |
16414 | ||
16415 | static void | |
16416 | s_nan (int ignore ATTRIBUTE_UNUSED) | |
16417 | { | |
16418 | static const char str_legacy[] = "legacy"; | |
16419 | static const char str_2008[] = "2008"; | |
16420 | size_t i; | |
16421 | ||
16422 | for (i = 0; !is_end_of_line[(unsigned char) input_line_pointer[i]]; i++); | |
16423 | ||
16424 | if (i == sizeof (str_2008) - 1 | |
16425 | && memcmp (input_line_pointer, str_2008, i) == 0) | |
7361da2c | 16426 | mips_nan2008 = 1; |
ba92f887 MR |
16427 | else if (i == sizeof (str_legacy) - 1 |
16428 | && memcmp (input_line_pointer, str_legacy, i) == 0) | |
7361da2c AB |
16429 | { |
16430 | if (ISA_HAS_LEGACY_NAN (file_mips_opts.isa)) | |
16431 | mips_nan2008 = 0; | |
16432 | else | |
16433 | as_bad (_("`%s' does not support legacy NaN"), | |
16434 | mips_cpu_info_from_isa (file_mips_opts.isa)->name); | |
16435 | } | |
ba92f887 | 16436 | else |
1661c76c | 16437 | as_bad (_("bad .nan directive")); |
ba92f887 MR |
16438 | |
16439 | input_line_pointer += i; | |
16440 | demand_empty_rest_of_line (); | |
16441 | } | |
16442 | ||
754e2bb9 RS |
16443 | /* Handle a .stab[snd] directive. Ideally these directives would be |
16444 | implemented in a transparent way, so that removing them would not | |
16445 | have any effect on the generated instructions. However, s_stab | |
16446 | internally changes the section, so in practice we need to decide | |
16447 | now whether the preceding label marks compressed code. We do not | |
16448 | support changing the compression mode of a label after a .stab* | |
16449 | directive, such as in: | |
16450 | ||
16451 | foo: | |
16452 | .stabs ... | |
16453 | .set mips16 | |
16454 | ||
16455 | so the current mode wins. */ | |
252b5132 RH |
16456 | |
16457 | static void | |
17a2f251 | 16458 | s_mips_stab (int type) |
252b5132 | 16459 | { |
754e2bb9 | 16460 | mips_mark_labels (); |
252b5132 RH |
16461 | s_stab (type); |
16462 | } | |
16463 | ||
54f4ddb3 | 16464 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
252b5132 RH |
16465 | |
16466 | static void | |
17a2f251 | 16467 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16468 | { |
16469 | char *name; | |
16470 | int c; | |
16471 | symbolS *symbolP; | |
16472 | expressionS exp; | |
16473 | ||
d02603dc | 16474 | c = get_symbol_name (&name); |
252b5132 RH |
16475 | symbolP = symbol_find_or_make (name); |
16476 | S_SET_WEAK (symbolP); | |
16477 | *input_line_pointer = c; | |
16478 | ||
d02603dc | 16479 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
16480 | |
16481 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
16482 | { | |
16483 | if (S_IS_DEFINED (symbolP)) | |
16484 | { | |
20203fb9 | 16485 | as_bad (_("ignoring attempt to redefine symbol %s"), |
252b5132 RH |
16486 | S_GET_NAME (symbolP)); |
16487 | ignore_rest_of_line (); | |
16488 | return; | |
16489 | } | |
bdaaa2e1 | 16490 | |
252b5132 RH |
16491 | if (*input_line_pointer == ',') |
16492 | { | |
16493 | ++input_line_pointer; | |
16494 | SKIP_WHITESPACE (); | |
16495 | } | |
bdaaa2e1 | 16496 | |
252b5132 RH |
16497 | expression (&exp); |
16498 | if (exp.X_op != O_symbol) | |
16499 | { | |
20203fb9 | 16500 | as_bad (_("bad .weakext directive")); |
98d3f06f | 16501 | ignore_rest_of_line (); |
252b5132 RH |
16502 | return; |
16503 | } | |
49309057 | 16504 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
16505 | } |
16506 | ||
16507 | demand_empty_rest_of_line (); | |
16508 | } | |
16509 | ||
16510 | /* Parse a register string into a number. Called from the ECOFF code | |
16511 | to parse .frame. The argument is non-zero if this is the frame | |
16512 | register, so that we can record it in mips_frame_reg. */ | |
16513 | ||
16514 | int | |
17a2f251 | 16515 | tc_get_register (int frame) |
252b5132 | 16516 | { |
707bfff6 | 16517 | unsigned int reg; |
252b5132 RH |
16518 | |
16519 | SKIP_WHITESPACE (); | |
707bfff6 TS |
16520 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
16521 | reg = 0; | |
252b5132 | 16522 | if (frame) |
7a621144 DJ |
16523 | { |
16524 | mips_frame_reg = reg != 0 ? reg : SP; | |
16525 | mips_frame_reg_valid = 1; | |
16526 | mips_cprestore_valid = 0; | |
16527 | } | |
252b5132 RH |
16528 | return reg; |
16529 | } | |
16530 | ||
16531 | valueT | |
17a2f251 | 16532 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
16533 | { |
16534 | int align = bfd_get_section_alignment (stdoutput, seg); | |
16535 | ||
f3ded42a RS |
16536 | /* We don't need to align ELF sections to the full alignment. |
16537 | However, Irix 5 may prefer that we align them at least to a 16 | |
16538 | byte boundary. We don't bother to align the sections if we | |
16539 | are targeted for an embedded system. */ | |
16540 | if (strncmp (TARGET_OS, "elf", 3) == 0) | |
16541 | return addr; | |
16542 | if (align > 4) | |
16543 | align = 4; | |
252b5132 | 16544 | |
8d3842cd | 16545 | return ((addr + (1 << align) - 1) & -(1 << align)); |
252b5132 RH |
16546 | } |
16547 | ||
16548 | /* Utility routine, called from above as well. If called while the | |
16549 | input file is still being read, it's only an approximation. (For | |
16550 | example, a symbol may later become defined which appeared to be | |
16551 | undefined earlier.) */ | |
16552 | ||
16553 | static int | |
17a2f251 | 16554 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
16555 | { |
16556 | if (sym == 0) | |
16557 | return 0; | |
16558 | ||
4d0d148d | 16559 | if (g_switch_value > 0) |
252b5132 RH |
16560 | { |
16561 | const char *symname; | |
16562 | int change; | |
16563 | ||
c9914766 | 16564 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
16565 | register. It can be if it is smaller than the -G size or if |
16566 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 16567 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
16568 | they can. */ |
16569 | symname = S_GET_NAME (sym); | |
16570 | if (symname != (const char *) NULL | |
16571 | && (strcmp (symname, "eprol") == 0 | |
16572 | || strcmp (symname, "etext") == 0 | |
16573 | || strcmp (symname, "_gp") == 0 | |
16574 | || strcmp (symname, "edata") == 0 | |
16575 | || strcmp (symname, "_fbss") == 0 | |
16576 | || strcmp (symname, "_fdata") == 0 | |
16577 | || strcmp (symname, "_ftext") == 0 | |
16578 | || strcmp (symname, "end") == 0 | |
16579 | || strcmp (symname, "_gp_disp") == 0)) | |
16580 | change = 1; | |
16581 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
16582 | && (0 | |
16583 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
16584 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
16585 | && (symbol_get_obj (sym)->ecoff_extern_size | |
16586 | <= g_switch_value)) | |
252b5132 RH |
16587 | #endif |
16588 | /* We must defer this decision until after the whole | |
16589 | file has been read, since there might be a .extern | |
16590 | after the first use of this symbol. */ | |
16591 | || (before_relaxing | |
16592 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 16593 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
16594 | #endif |
16595 | && S_GET_VALUE (sym) == 0) | |
16596 | || (S_GET_VALUE (sym) != 0 | |
16597 | && S_GET_VALUE (sym) <= g_switch_value))) | |
16598 | change = 0; | |
16599 | else | |
16600 | { | |
16601 | const char *segname; | |
16602 | ||
16603 | segname = segment_name (S_GET_SEGMENT (sym)); | |
9c2799c2 | 16604 | gas_assert (strcmp (segname, ".lit8") != 0 |
252b5132 RH |
16605 | && strcmp (segname, ".lit4") != 0); |
16606 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
16607 | && strcmp (segname, ".sbss") != 0 |
16608 | && strncmp (segname, ".sdata.", 7) != 0 | |
d4dc2f22 TS |
16609 | && strncmp (segname, ".sbss.", 6) != 0 |
16610 | && strncmp (segname, ".gnu.linkonce.sb.", 17) != 0 | |
fba2b7f9 | 16611 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); |
252b5132 RH |
16612 | } |
16613 | return change; | |
16614 | } | |
16615 | else | |
c9914766 | 16616 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
16617 | return 1; |
16618 | } | |
16619 | ||
5919d012 RS |
16620 | |
16621 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
16622 | ||
16623 | static bfd_boolean | |
17a2f251 | 16624 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
16625 | { |
16626 | asection *symsec; | |
5919d012 RS |
16627 | |
16628 | /* Handle the case of a symbol equated to another symbol. */ | |
16629 | while (symbol_equated_reloc_p (sym)) | |
16630 | { | |
16631 | symbolS *n; | |
16632 | ||
5f0fe04b | 16633 | /* It's possible to get a loop here in a badly written program. */ |
5919d012 RS |
16634 | n = symbol_get_value_expression (sym)->X_add_symbol; |
16635 | if (n == sym) | |
16636 | break; | |
16637 | sym = n; | |
16638 | } | |
16639 | ||
df1f3cda DD |
16640 | if (symbol_section_p (sym)) |
16641 | return TRUE; | |
16642 | ||
5919d012 RS |
16643 | symsec = S_GET_SEGMENT (sym); |
16644 | ||
5919d012 | 16645 | /* This must duplicate the test in adjust_reloc_syms. */ |
45dfa85a AM |
16646 | return (!bfd_is_und_section (symsec) |
16647 | && !bfd_is_abs_section (symsec) | |
5f0fe04b TS |
16648 | && !bfd_is_com_section (symsec) |
16649 | && !s_is_linkonce (sym, segtype) | |
5919d012 | 16650 | /* A global or weak symbol is treated as external. */ |
f3ded42a | 16651 | && (!S_IS_WEAK (sym) && !S_IS_EXTERNAL (sym))); |
5919d012 RS |
16652 | } |
16653 | ||
16654 | ||
252b5132 RH |
16655 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
16656 | extended opcode. SEC is the section the frag is in. */ | |
16657 | ||
16658 | static int | |
17a2f251 | 16659 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
16660 | { |
16661 | int type; | |
3ccad066 | 16662 | const struct mips_int_operand *operand; |
252b5132 | 16663 | offsetT val; |
252b5132 | 16664 | segT symsec; |
98aa84af | 16665 | fragS *sym_frag; |
252b5132 RH |
16666 | |
16667 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
16668 | return 0; | |
16669 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
16670 | return 1; | |
16671 | ||
16672 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
3ccad066 | 16673 | operand = mips16_immed_operand (type, FALSE); |
252b5132 | 16674 | |
98aa84af | 16675 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 16676 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 16677 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 | 16678 | |
3ccad066 | 16679 | if (operand->root.type == OP_PCREL) |
252b5132 | 16680 | { |
3ccad066 | 16681 | const struct mips_pcrel_operand *pcrel_op; |
252b5132 | 16682 | addressT addr; |
3ccad066 | 16683 | offsetT maxtiny; |
252b5132 RH |
16684 | |
16685 | /* We won't have the section when we are called from | |
16686 | mips_relax_frag. However, we will always have been called | |
16687 | from md_estimate_size_before_relax first. If this is a | |
16688 | branch to a different section, we mark it as such. If SEC is | |
16689 | NULL, and the frag is not marked, then it must be a branch to | |
16690 | the same section. */ | |
3ccad066 | 16691 | pcrel_op = (const struct mips_pcrel_operand *) operand; |
252b5132 RH |
16692 | if (sec == NULL) |
16693 | { | |
16694 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
16695 | return 1; | |
16696 | } | |
16697 | else | |
16698 | { | |
98aa84af | 16699 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
16700 | if (symsec != sec) |
16701 | { | |
16702 | fragp->fr_subtype = | |
16703 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
16704 | ||
16705 | /* FIXME: We should support this, and let the linker | |
16706 | catch branches and loads that are out of range. */ | |
16707 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
16708 | _("unsupported PC relative reference to different section")); | |
16709 | ||
16710 | return 1; | |
16711 | } | |
98aa84af AM |
16712 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
16713 | /* Assume non-extended on the first relaxation pass. | |
16714 | The address we have calculated will be bogus if this is | |
16715 | a forward branch to another frag, as the forward frag | |
16716 | will have fr_address == 0. */ | |
16717 | return 0; | |
252b5132 RH |
16718 | } |
16719 | ||
16720 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
16721 | the same section. If the relax_marker of the symbol fragment |
16722 | differs from the relax_marker of this fragment, we have not | |
16723 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
16724 | in STRETCH in order to get a better estimate of the address. |
16725 | This particularly matters because of the shift bits. */ | |
16726 | if (stretch != 0 | |
98aa84af | 16727 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
16728 | { |
16729 | fragS *f; | |
16730 | ||
16731 | /* Adjust stretch for any alignment frag. Note that if have | |
16732 | been expanding the earlier code, the symbol may be | |
16733 | defined in what appears to be an earlier frag. FIXME: | |
16734 | This doesn't handle the fr_subtype field, which specifies | |
16735 | a maximum number of bytes to skip when doing an | |
16736 | alignment. */ | |
98aa84af | 16737 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
16738 | { |
16739 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
16740 | { | |
16741 | if (stretch < 0) | |
16742 | stretch = - ((- stretch) | |
16743 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
16744 | else | |
16745 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
16746 | if (stretch == 0) | |
16747 | break; | |
16748 | } | |
16749 | } | |
16750 | if (f != NULL) | |
16751 | val += stretch; | |
16752 | } | |
16753 | ||
16754 | addr = fragp->fr_address + fragp->fr_fix; | |
16755 | ||
16756 | /* The base address rules are complicated. The base address of | |
16757 | a branch is the following instruction. The base address of a | |
16758 | PC relative load or add is the instruction itself, but if it | |
16759 | is in a delay slot (in which case it can not be extended) use | |
16760 | the address of the instruction whose delay slot it is in. */ | |
3ccad066 | 16761 | if (pcrel_op->include_isa_bit) |
252b5132 RH |
16762 | { |
16763 | addr += 2; | |
16764 | ||
16765 | /* If we are currently assuming that this frag should be | |
16766 | extended, then, the current address is two bytes | |
bdaaa2e1 | 16767 | higher. */ |
252b5132 RH |
16768 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
16769 | addr += 2; | |
16770 | ||
16771 | /* Ignore the low bit in the target, since it will be set | |
16772 | for a text label. */ | |
3ccad066 | 16773 | val &= -2; |
252b5132 RH |
16774 | } |
16775 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
16776 | addr -= 4; | |
16777 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
16778 | addr -= 2; | |
16779 | ||
3ccad066 | 16780 | val -= addr & -(1 << pcrel_op->align_log2); |
252b5132 RH |
16781 | |
16782 | /* If any of the shifted bits are set, we must use an extended | |
16783 | opcode. If the address depends on the size of this | |
16784 | instruction, this can lead to a loop, so we arrange to always | |
16785 | use an extended opcode. We only check this when we are in | |
16786 | the main relaxation loop, when SEC is NULL. */ | |
3ccad066 | 16787 | if ((val & ((1 << operand->shift) - 1)) != 0 && sec == NULL) |
252b5132 RH |
16788 | { |
16789 | fragp->fr_subtype = | |
16790 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
16791 | return 1; | |
16792 | } | |
16793 | ||
16794 | /* If we are about to mark a frag as extended because the value | |
3ccad066 RS |
16795 | is precisely the next value above maxtiny, then there is a |
16796 | chance of an infinite loop as in the following code: | |
252b5132 RH |
16797 | la $4,foo |
16798 | .skip 1020 | |
16799 | .align 2 | |
16800 | foo: | |
16801 | In this case when the la is extended, foo is 0x3fc bytes | |
16802 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
16803 | the la must be extended. To avoid this loop, we mark the | |
16804 | frag as extended if it was small, and is about to become | |
3ccad066 RS |
16805 | extended with the next value above maxtiny. */ |
16806 | maxtiny = mips_int_operand_max (operand); | |
16807 | if (val == maxtiny + (1 << operand->shift) | |
252b5132 RH |
16808 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) |
16809 | && sec == NULL) | |
16810 | { | |
16811 | fragp->fr_subtype = | |
16812 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
16813 | return 1; | |
16814 | } | |
16815 | } | |
16816 | else if (symsec != absolute_section && sec != NULL) | |
16817 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
16818 | ||
3ccad066 | 16819 | return !mips16_immed_in_range_p (operand, BFD_RELOC_UNUSED, val); |
252b5132 RH |
16820 | } |
16821 | ||
4a6a3df4 AO |
16822 | /* Compute the length of a branch sequence, and adjust the |
16823 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
16824 | worst-case length is computed, with UPDATE being used to indicate | |
16825 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
16826 | branch is to be computed. */ | |
16827 | static int | |
17a2f251 | 16828 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 16829 | { |
b34976b6 | 16830 | bfd_boolean toofar; |
4a6a3df4 AO |
16831 | int length; |
16832 | ||
16833 | if (fragp | |
16834 | && S_IS_DEFINED (fragp->fr_symbol) | |
991f40a9 | 16835 | && !S_IS_WEAK (fragp->fr_symbol) |
4a6a3df4 AO |
16836 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) |
16837 | { | |
16838 | addressT addr; | |
16839 | offsetT val; | |
16840 | ||
16841 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
16842 | ||
16843 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
16844 | ||
16845 | val -= addr; | |
16846 | ||
16847 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
16848 | } | |
4a6a3df4 | 16849 | else |
c1f61bd2 MR |
16850 | /* If the symbol is not defined or it's in a different segment, |
16851 | we emit the long sequence. */ | |
b34976b6 | 16852 | toofar = TRUE; |
4a6a3df4 AO |
16853 | |
16854 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
16855 | fragp->fr_subtype | |
66b3e8da MR |
16856 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_AT (fragp->fr_subtype), |
16857 | RELAX_BRANCH_UNCOND (fragp->fr_subtype), | |
4a6a3df4 AO |
16858 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
16859 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
16860 | toofar); | |
16861 | ||
16862 | length = 4; | |
16863 | if (toofar) | |
16864 | { | |
16865 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
16866 | length += 8; | |
16867 | ||
16868 | if (mips_pic != NO_PIC) | |
16869 | { | |
16870 | /* Additional space for PIC loading of target address. */ | |
16871 | length += 8; | |
16872 | if (mips_opts.isa == ISA_MIPS1) | |
16873 | /* Additional space for $at-stabilizing nop. */ | |
16874 | length += 4; | |
16875 | } | |
16876 | ||
16877 | /* If branch is conditional. */ | |
16878 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
16879 | length += 8; | |
16880 | } | |
b34976b6 | 16881 | |
4a6a3df4 AO |
16882 | return length; |
16883 | } | |
16884 | ||
df58fc94 RS |
16885 | /* Compute the length of a branch sequence, and adjust the |
16886 | RELAX_MICROMIPS_TOOFAR32 bit accordingly. If FRAGP is NULL, the | |
16887 | worst-case length is computed, with UPDATE being used to indicate | |
16888 | whether an unconditional (-1), or regular (0) branch is to be | |
16889 | computed. */ | |
16890 | ||
16891 | static int | |
16892 | relaxed_micromips_32bit_branch_length (fragS *fragp, asection *sec, int update) | |
16893 | { | |
16894 | bfd_boolean toofar; | |
16895 | int length; | |
16896 | ||
16897 | if (fragp | |
16898 | && S_IS_DEFINED (fragp->fr_symbol) | |
991f40a9 | 16899 | && !S_IS_WEAK (fragp->fr_symbol) |
df58fc94 RS |
16900 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) |
16901 | { | |
16902 | addressT addr; | |
16903 | offsetT val; | |
16904 | ||
16905 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
16906 | /* Ignore the low bit in the target, since it will be set | |
16907 | for a text label. */ | |
16908 | if ((val & 1) != 0) | |
16909 | --val; | |
16910 | ||
16911 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
16912 | ||
16913 | val -= addr; | |
16914 | ||
16915 | toofar = val < - (0x8000 << 1) || val >= (0x8000 << 1); | |
16916 | } | |
df58fc94 | 16917 | else |
c1f61bd2 MR |
16918 | /* If the symbol is not defined or it's in a different segment, |
16919 | we emit the long sequence. */ | |
df58fc94 RS |
16920 | toofar = TRUE; |
16921 | ||
16922 | if (fragp && update | |
16923 | && toofar != RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
16924 | fragp->fr_subtype = (toofar | |
16925 | ? RELAX_MICROMIPS_MARK_TOOFAR32 (fragp->fr_subtype) | |
16926 | : RELAX_MICROMIPS_CLEAR_TOOFAR32 (fragp->fr_subtype)); | |
16927 | ||
16928 | length = 4; | |
16929 | if (toofar) | |
16930 | { | |
16931 | bfd_boolean compact_known = fragp != NULL; | |
16932 | bfd_boolean compact = FALSE; | |
16933 | bfd_boolean uncond; | |
16934 | ||
16935 | if (compact_known) | |
16936 | compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); | |
16937 | if (fragp) | |
16938 | uncond = RELAX_MICROMIPS_UNCOND (fragp->fr_subtype); | |
16939 | else | |
16940 | uncond = update < 0; | |
16941 | ||
16942 | /* If label is out of range, we turn branch <br>: | |
16943 | ||
16944 | <br> label # 4 bytes | |
16945 | 0: | |
16946 | ||
16947 | into: | |
16948 | ||
16949 | j label # 4 bytes | |
16950 | nop # 2 bytes if compact && !PIC | |
16951 | 0: | |
16952 | */ | |
16953 | if (mips_pic == NO_PIC && (!compact_known || compact)) | |
16954 | length += 2; | |
16955 | ||
16956 | /* If assembling PIC code, we further turn: | |
16957 | ||
16958 | j label # 4 bytes | |
16959 | ||
16960 | into: | |
16961 | ||
16962 | lw/ld at, %got(label)(gp) # 4 bytes | |
16963 | d/addiu at, %lo(label) # 4 bytes | |
16964 | jr/c at # 2 bytes | |
16965 | */ | |
16966 | if (mips_pic != NO_PIC) | |
16967 | length += 6; | |
16968 | ||
16969 | /* If branch <br> is conditional, we prepend negated branch <brneg>: | |
16970 | ||
16971 | <brneg> 0f # 4 bytes | |
16972 | nop # 2 bytes if !compact | |
16973 | */ | |
16974 | if (!uncond) | |
16975 | length += (compact_known && compact) ? 4 : 6; | |
16976 | } | |
16977 | ||
16978 | return length; | |
16979 | } | |
16980 | ||
16981 | /* Compute the length of a branch, and adjust the RELAX_MICROMIPS_TOOFAR16 | |
16982 | bit accordingly. */ | |
16983 | ||
16984 | static int | |
16985 | relaxed_micromips_16bit_branch_length (fragS *fragp, asection *sec, int update) | |
16986 | { | |
16987 | bfd_boolean toofar; | |
16988 | ||
df58fc94 RS |
16989 | if (fragp |
16990 | && S_IS_DEFINED (fragp->fr_symbol) | |
991f40a9 | 16991 | && !S_IS_WEAK (fragp->fr_symbol) |
df58fc94 RS |
16992 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) |
16993 | { | |
16994 | addressT addr; | |
16995 | offsetT val; | |
16996 | int type; | |
16997 | ||
16998 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
16999 | /* Ignore the low bit in the target, since it will be set | |
17000 | for a text label. */ | |
17001 | if ((val & 1) != 0) | |
17002 | --val; | |
17003 | ||
17004 | /* Assume this is a 2-byte branch. */ | |
17005 | addr = fragp->fr_address + fragp->fr_fix + 2; | |
17006 | ||
17007 | /* We try to avoid the infinite loop by not adding 2 more bytes for | |
17008 | long branches. */ | |
17009 | ||
17010 | val -= addr; | |
17011 | ||
17012 | type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
17013 | if (type == 'D') | |
17014 | toofar = val < - (0x200 << 1) || val >= (0x200 << 1); | |
17015 | else if (type == 'E') | |
17016 | toofar = val < - (0x40 << 1) || val >= (0x40 << 1); | |
17017 | else | |
17018 | abort (); | |
17019 | } | |
17020 | else | |
17021 | /* If the symbol is not defined or it's in a different segment, | |
17022 | we emit a normal 32-bit branch. */ | |
17023 | toofar = TRUE; | |
17024 | ||
17025 | if (fragp && update | |
17026 | && toofar != RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
17027 | fragp->fr_subtype | |
17028 | = toofar ? RELAX_MICROMIPS_MARK_TOOFAR16 (fragp->fr_subtype) | |
17029 | : RELAX_MICROMIPS_CLEAR_TOOFAR16 (fragp->fr_subtype); | |
17030 | ||
17031 | if (toofar) | |
17032 | return 4; | |
17033 | ||
17034 | return 2; | |
17035 | } | |
17036 | ||
252b5132 RH |
17037 | /* Estimate the size of a frag before relaxing. Unless this is the |
17038 | mips16, we are not really relaxing here, and the final size is | |
17039 | encoded in the subtype information. For the mips16, we have to | |
17040 | decide whether we are using an extended opcode or not. */ | |
17041 | ||
252b5132 | 17042 | int |
17a2f251 | 17043 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 17044 | { |
5919d012 | 17045 | int change; |
252b5132 | 17046 | |
4a6a3df4 AO |
17047 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17048 | { | |
17049 | ||
b34976b6 AM |
17050 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
17051 | ||
4a6a3df4 AO |
17052 | return fragp->fr_var; |
17053 | } | |
17054 | ||
252b5132 | 17055 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
17056 | /* We don't want to modify the EXTENDED bit here; it might get us |
17057 | into infinite loops. We change it only in mips_relax_frag(). */ | |
17058 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 | 17059 | |
df58fc94 RS |
17060 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17061 | { | |
17062 | int length = 4; | |
17063 | ||
17064 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17065 | length = relaxed_micromips_16bit_branch_length (fragp, segtype, FALSE); | |
17066 | if (length == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17067 | length = relaxed_micromips_32bit_branch_length (fragp, segtype, FALSE); | |
17068 | fragp->fr_var = length; | |
17069 | ||
17070 | return length; | |
17071 | } | |
17072 | ||
252b5132 | 17073 | if (mips_pic == NO_PIC) |
5919d012 | 17074 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 17075 | else if (mips_pic == SVR4_PIC) |
5919d012 | 17076 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
17077 | else if (mips_pic == VXWORKS_PIC) |
17078 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
17079 | change = 0; | |
252b5132 RH |
17080 | else |
17081 | abort (); | |
17082 | ||
17083 | if (change) | |
17084 | { | |
4d7206a2 | 17085 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 17086 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 17087 | } |
4d7206a2 RS |
17088 | else |
17089 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
17090 | } |
17091 | ||
17092 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 17093 | should be converted into a reloc against a section. */ |
252b5132 RH |
17094 | |
17095 | int | |
17a2f251 | 17096 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 17097 | { |
252b5132 RH |
17098 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
17099 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
17100 | return 0; | |
a161fe53 | 17101 | |
252b5132 RH |
17102 | if (fixp->fx_addsy == NULL) |
17103 | return 1; | |
a161fe53 | 17104 | |
2f0c68f2 CM |
17105 | /* Allow relocs used for EH tables. */ |
17106 | if (fixp->fx_r_type == BFD_RELOC_32_PCREL) | |
17107 | return 1; | |
17108 | ||
de7e6852 RS |
17109 | /* If symbol SYM is in a mergeable section, relocations of the form |
17110 | SYM + 0 can usually be made section-relative. The mergeable data | |
17111 | is then identified by the section offset rather than by the symbol. | |
17112 | ||
17113 | However, if we're generating REL LO16 relocations, the offset is split | |
17114 | between the LO16 and parterning high part relocation. The linker will | |
17115 | need to recalculate the complete offset in order to correctly identify | |
17116 | the merge data. | |
17117 | ||
17118 | The linker has traditionally not looked for the parterning high part | |
17119 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
17120 | placed anywhere. Rather than break backwards compatibility by changing | |
17121 | this, it seems better not to force the issue, and instead keep the | |
17122 | original symbol. This will work with either linker behavior. */ | |
738e5348 | 17123 | if ((lo16_reloc_p (fixp->fx_r_type) |
704803a9 | 17124 | || reloc_needs_lo_p (fixp->fx_r_type)) |
de7e6852 RS |
17125 | && HAVE_IN_PLACE_ADDENDS |
17126 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
17127 | return 0; | |
17128 | ||
ce70d90a | 17129 | /* There is no place to store an in-place offset for JALR relocations. |
2de39019 CM |
17130 | Likewise an in-range offset of limited PC-relative relocations may |
17131 | overflow the in-place relocatable field if recalculated against the | |
7361da2c AB |
17132 | start address of the symbol's containing section. |
17133 | ||
17134 | Also, PC relative relocations for MIPS R6 need to be symbol rather than | |
17135 | section relative to allow linker relaxations to be performed later on. */ | |
17136 | if ((HAVE_IN_PLACE_ADDENDS || ISA_IS_R6 (mips_opts.isa)) | |
2de39019 CM |
17137 | && (limited_pcrel_reloc_p (fixp->fx_r_type) |
17138 | || jalr_reloc_p (fixp->fx_r_type))) | |
1180b5a4 RS |
17139 | return 0; |
17140 | ||
b314ec0e RS |
17141 | /* R_MIPS16_26 relocations against non-MIPS16 functions might resolve |
17142 | to a floating-point stub. The same is true for non-R_MIPS16_26 | |
17143 | relocations against MIPS16 functions; in this case, the stub becomes | |
17144 | the function's canonical address. | |
17145 | ||
17146 | Floating-point stubs are stored in unique .mips16.call.* or | |
17147 | .mips16.fn.* sections. If a stub T for function F is in section S, | |
17148 | the first relocation in section S must be against F; this is how the | |
17149 | linker determines the target function. All relocations that might | |
17150 | resolve to T must also be against F. We therefore have the following | |
17151 | restrictions, which are given in an intentionally-redundant way: | |
17152 | ||
17153 | 1. We cannot reduce R_MIPS16_26 relocations against non-MIPS16 | |
17154 | symbols. | |
17155 | ||
17156 | 2. We cannot reduce a stub's relocations against non-MIPS16 symbols | |
17157 | if that stub might be used. | |
17158 | ||
17159 | 3. We cannot reduce non-R_MIPS16_26 relocations against MIPS16 | |
17160 | symbols. | |
17161 | ||
17162 | 4. We cannot reduce a stub's relocations against MIPS16 symbols if | |
17163 | that stub might be used. | |
17164 | ||
17165 | There is a further restriction: | |
17166 | ||
df58fc94 RS |
17167 | 5. We cannot reduce jump relocations (R_MIPS_26, R_MIPS16_26 or |
17168 | R_MICROMIPS_26_S1) against MIPS16 or microMIPS symbols on | |
17169 | targets with in-place addends; the relocation field cannot | |
b314ec0e RS |
17170 | encode the low bit. |
17171 | ||
df58fc94 RS |
17172 | For simplicity, we deal with (3)-(4) by not reducing _any_ relocation |
17173 | against a MIPS16 symbol. We deal with (5) by by not reducing any | |
17174 | such relocations on REL targets. | |
b314ec0e RS |
17175 | |
17176 | We deal with (1)-(2) by saying that, if there's a R_MIPS16_26 | |
17177 | relocation against some symbol R, no relocation against R may be | |
17178 | reduced. (Note that this deals with (2) as well as (1) because | |
17179 | relocations against global symbols will never be reduced on ELF | |
17180 | targets.) This approach is a little simpler than trying to detect | |
17181 | stub sections, and gives the "all or nothing" per-symbol consistency | |
17182 | that we have for MIPS16 symbols. */ | |
f3ded42a | 17183 | if (fixp->fx_subsy == NULL |
30c09090 | 17184 | && (ELF_ST_IS_MIPS16 (S_GET_OTHER (fixp->fx_addsy)) |
df58fc94 RS |
17185 | || *symbol_get_tc (fixp->fx_addsy) |
17186 | || (HAVE_IN_PLACE_ADDENDS | |
17187 | && ELF_ST_IS_MICROMIPS (S_GET_OTHER (fixp->fx_addsy)) | |
17188 | && jmp_reloc_p (fixp->fx_r_type)))) | |
252b5132 | 17189 | return 0; |
a161fe53 | 17190 | |
252b5132 RH |
17191 | return 1; |
17192 | } | |
17193 | ||
17194 | /* Translate internal representation of relocation info to BFD target | |
17195 | format. */ | |
17196 | ||
17197 | arelent ** | |
17a2f251 | 17198 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
17199 | { |
17200 | static arelent *retval[4]; | |
17201 | arelent *reloc; | |
17202 | bfd_reloc_code_real_type code; | |
17203 | ||
4b0cff4e | 17204 | memset (retval, 0, sizeof(retval)); |
325801bd TS |
17205 | reloc = retval[0] = XCNEW (arelent); |
17206 | reloc->sym_ptr_ptr = XNEW (asymbol *); | |
49309057 | 17207 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
252b5132 RH |
17208 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
17209 | ||
bad36eac DJ |
17210 | if (fixp->fx_pcrel) |
17211 | { | |
df58fc94 RS |
17212 | gas_assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2 |
17213 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
17214 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
b47468a6 | 17215 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1 |
7361da2c AB |
17216 | || fixp->fx_r_type == BFD_RELOC_32_PCREL |
17217 | || fixp->fx_r_type == BFD_RELOC_MIPS_21_PCREL_S2 | |
17218 | || fixp->fx_r_type == BFD_RELOC_MIPS_26_PCREL_S2 | |
17219 | || fixp->fx_r_type == BFD_RELOC_MIPS_18_PCREL_S3 | |
17220 | || fixp->fx_r_type == BFD_RELOC_MIPS_19_PCREL_S2 | |
17221 | || fixp->fx_r_type == BFD_RELOC_HI16_S_PCREL | |
17222 | || fixp->fx_r_type == BFD_RELOC_LO16_PCREL); | |
bad36eac DJ |
17223 | |
17224 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
17225 | Relocations want only the symbol offset. */ | |
17226 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
bad36eac DJ |
17227 | } |
17228 | else | |
17229 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 17230 | |
438c16b8 TS |
17231 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
17232 | entry to be used in the relocation's section offset. */ | |
17233 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
17234 | { |
17235 | reloc->address = reloc->addend; | |
17236 | reloc->addend = 0; | |
17237 | } | |
17238 | ||
252b5132 | 17239 | code = fixp->fx_r_type; |
252b5132 | 17240 | |
bad36eac | 17241 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
17242 | if (reloc->howto == NULL) |
17243 | { | |
17244 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1661c76c RS |
17245 | _("cannot represent %s relocation in this object file" |
17246 | " format"), | |
252b5132 RH |
17247 | bfd_get_reloc_code_name (code)); |
17248 | retval[0] = NULL; | |
17249 | } | |
17250 | ||
17251 | return retval; | |
17252 | } | |
17253 | ||
17254 | /* Relax a machine dependent frag. This returns the amount by which | |
17255 | the current size of the frag should change. */ | |
17256 | ||
17257 | int | |
17a2f251 | 17258 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 17259 | { |
4a6a3df4 AO |
17260 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17261 | { | |
17262 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
17263 | |
17264 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
17265 | |
17266 | return fragp->fr_var - old_var; | |
17267 | } | |
17268 | ||
df58fc94 RS |
17269 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17270 | { | |
17271 | offsetT old_var = fragp->fr_var; | |
17272 | offsetT new_var = 4; | |
17273 | ||
17274 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17275 | new_var = relaxed_micromips_16bit_branch_length (fragp, sec, TRUE); | |
17276 | if (new_var == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17277 | new_var = relaxed_micromips_32bit_branch_length (fragp, sec, TRUE); | |
17278 | fragp->fr_var = new_var; | |
17279 | ||
17280 | return new_var - old_var; | |
17281 | } | |
17282 | ||
252b5132 RH |
17283 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
17284 | return 0; | |
17285 | ||
c4e7957c | 17286 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
17287 | { |
17288 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17289 | return 0; | |
17290 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
17291 | return 2; | |
17292 | } | |
17293 | else | |
17294 | { | |
17295 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17296 | return 0; | |
17297 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
17298 | return -2; | |
17299 | } | |
17300 | ||
17301 | return 0; | |
17302 | } | |
17303 | ||
17304 | /* Convert a machine dependent frag. */ | |
17305 | ||
17306 | void | |
17a2f251 | 17307 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 17308 | { |
4a6a3df4 AO |
17309 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17310 | { | |
4d68580a | 17311 | char *buf; |
4a6a3df4 AO |
17312 | unsigned long insn; |
17313 | expressionS exp; | |
17314 | fixS *fixp; | |
b34976b6 | 17315 | |
4d68580a RS |
17316 | buf = fragp->fr_literal + fragp->fr_fix; |
17317 | insn = read_insn (buf); | |
b34976b6 | 17318 | |
4a6a3df4 AO |
17319 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
17320 | { | |
17321 | /* We generate a fixup instead of applying it right now | |
17322 | because, if there are linker relaxations, we're going to | |
17323 | need the relocations. */ | |
17324 | exp.X_op = O_symbol; | |
17325 | exp.X_add_symbol = fragp->fr_symbol; | |
17326 | exp.X_add_number = fragp->fr_offset; | |
17327 | ||
4d68580a RS |
17328 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, TRUE, |
17329 | BFD_RELOC_16_PCREL_S2); | |
4a6a3df4 AO |
17330 | fixp->fx_file = fragp->fr_file; |
17331 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 17332 | |
4d68580a | 17333 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
17334 | } |
17335 | else | |
17336 | { | |
17337 | int i; | |
17338 | ||
17339 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
1661c76c | 17340 | _("relaxed out-of-range branch into a jump")); |
4a6a3df4 AO |
17341 | |
17342 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
17343 | goto uncond; | |
17344 | ||
17345 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17346 | { | |
17347 | /* Reverse the branch. */ | |
17348 | switch ((insn >> 28) & 0xf) | |
17349 | { | |
17350 | case 4: | |
56d438b1 CF |
17351 | if ((insn & 0xff000000) == 0x47000000 |
17352 | || (insn & 0xff600000) == 0x45600000) | |
17353 | { | |
17354 | /* BZ.df/BNZ.df, BZ.V/BNZ.V can have the condition | |
17355 | reversed by tweaking bit 23. */ | |
17356 | insn ^= 0x00800000; | |
17357 | } | |
17358 | else | |
17359 | { | |
17360 | /* bc[0-3][tf]l? instructions can have the condition | |
17361 | reversed by tweaking a single TF bit, and their | |
17362 | opcodes all have 0x4???????. */ | |
17363 | gas_assert ((insn & 0xf3e00000) == 0x41000000); | |
17364 | insn ^= 0x00010000; | |
17365 | } | |
4a6a3df4 AO |
17366 | break; |
17367 | ||
17368 | case 0: | |
17369 | /* bltz 0x04000000 bgez 0x04010000 | |
54f4ddb3 | 17370 | bltzal 0x04100000 bgezal 0x04110000 */ |
9c2799c2 | 17371 | gas_assert ((insn & 0xfc0e0000) == 0x04000000); |
4a6a3df4 AO |
17372 | insn ^= 0x00010000; |
17373 | break; | |
b34976b6 | 17374 | |
4a6a3df4 AO |
17375 | case 1: |
17376 | /* beq 0x10000000 bne 0x14000000 | |
54f4ddb3 | 17377 | blez 0x18000000 bgtz 0x1c000000 */ |
4a6a3df4 AO |
17378 | insn ^= 0x04000000; |
17379 | break; | |
17380 | ||
17381 | default: | |
17382 | abort (); | |
17383 | } | |
17384 | } | |
17385 | ||
17386 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
17387 | { | |
17388 | /* Clear the and-link bit. */ | |
9c2799c2 | 17389 | gas_assert ((insn & 0xfc1c0000) == 0x04100000); |
4a6a3df4 | 17390 | |
54f4ddb3 TS |
17391 | /* bltzal 0x04100000 bgezal 0x04110000 |
17392 | bltzall 0x04120000 bgezall 0x04130000 */ | |
4a6a3df4 AO |
17393 | insn &= ~0x00100000; |
17394 | } | |
17395 | ||
17396 | /* Branch over the branch (if the branch was likely) or the | |
17397 | full jump (not likely case). Compute the offset from the | |
17398 | current instruction to branch to. */ | |
17399 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17400 | i = 16; | |
17401 | else | |
17402 | { | |
17403 | /* How many bytes in instructions we've already emitted? */ | |
4d68580a | 17404 | i = buf - fragp->fr_literal - fragp->fr_fix; |
4a6a3df4 AO |
17405 | /* How many bytes in instructions from here to the end? */ |
17406 | i = fragp->fr_var - i; | |
17407 | } | |
17408 | /* Convert to instruction count. */ | |
17409 | i >>= 2; | |
17410 | /* Branch counts from the next instruction. */ | |
b34976b6 | 17411 | i--; |
4a6a3df4 AO |
17412 | insn |= i; |
17413 | /* Branch over the jump. */ | |
4d68580a | 17414 | buf = write_insn (buf, insn); |
4a6a3df4 | 17415 | |
54f4ddb3 | 17416 | /* nop */ |
4d68580a | 17417 | buf = write_insn (buf, 0); |
4a6a3df4 AO |
17418 | |
17419 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17420 | { | |
17421 | /* beql $0, $0, 2f */ | |
17422 | insn = 0x50000000; | |
17423 | /* Compute the PC offset from the current instruction to | |
17424 | the end of the variable frag. */ | |
17425 | /* How many bytes in instructions we've already emitted? */ | |
4d68580a | 17426 | i = buf - fragp->fr_literal - fragp->fr_fix; |
4a6a3df4 AO |
17427 | /* How many bytes in instructions from here to the end? */ |
17428 | i = fragp->fr_var - i; | |
17429 | /* Convert to instruction count. */ | |
17430 | i >>= 2; | |
17431 | /* Don't decrement i, because we want to branch over the | |
17432 | delay slot. */ | |
4a6a3df4 | 17433 | insn |= i; |
4a6a3df4 | 17434 | |
4d68580a RS |
17435 | buf = write_insn (buf, insn); |
17436 | buf = write_insn (buf, 0); | |
4a6a3df4 AO |
17437 | } |
17438 | ||
17439 | uncond: | |
17440 | if (mips_pic == NO_PIC) | |
17441 | { | |
17442 | /* j or jal. */ | |
17443 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
17444 | ? 0x0c000000 : 0x08000000); | |
17445 | exp.X_op = O_symbol; | |
17446 | exp.X_add_symbol = fragp->fr_symbol; | |
17447 | exp.X_add_number = fragp->fr_offset; | |
17448 | ||
4d68580a RS |
17449 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
17450 | FALSE, BFD_RELOC_MIPS_JMP); | |
4a6a3df4 AO |
17451 | fixp->fx_file = fragp->fr_file; |
17452 | fixp->fx_line = fragp->fr_line; | |
17453 | ||
4d68580a | 17454 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
17455 | } |
17456 | else | |
17457 | { | |
66b3e8da MR |
17458 | unsigned long at = RELAX_BRANCH_AT (fragp->fr_subtype); |
17459 | ||
4a6a3df4 | 17460 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ |
66b3e8da MR |
17461 | insn = HAVE_64BIT_ADDRESSES ? 0xdf800000 : 0x8f800000; |
17462 | insn |= at << OP_SH_RT; | |
4a6a3df4 AO |
17463 | exp.X_op = O_symbol; |
17464 | exp.X_add_symbol = fragp->fr_symbol; | |
17465 | exp.X_add_number = fragp->fr_offset; | |
17466 | ||
17467 | if (fragp->fr_offset) | |
17468 | { | |
17469 | exp.X_add_symbol = make_expr_symbol (&exp); | |
17470 | exp.X_add_number = 0; | |
17471 | } | |
17472 | ||
4d68580a RS |
17473 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
17474 | FALSE, BFD_RELOC_MIPS_GOT16); | |
4a6a3df4 AO |
17475 | fixp->fx_file = fragp->fr_file; |
17476 | fixp->fx_line = fragp->fr_line; | |
17477 | ||
4d68580a | 17478 | buf = write_insn (buf, insn); |
b34976b6 | 17479 | |
4a6a3df4 | 17480 | if (mips_opts.isa == ISA_MIPS1) |
4d68580a RS |
17481 | /* nop */ |
17482 | buf = write_insn (buf, 0); | |
4a6a3df4 AO |
17483 | |
17484 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
66b3e8da MR |
17485 | insn = HAVE_64BIT_ADDRESSES ? 0x64000000 : 0x24000000; |
17486 | insn |= at << OP_SH_RS | at << OP_SH_RT; | |
4a6a3df4 | 17487 | |
4d68580a RS |
17488 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
17489 | FALSE, BFD_RELOC_LO16); | |
4a6a3df4 AO |
17490 | fixp->fx_file = fragp->fr_file; |
17491 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 17492 | |
4d68580a | 17493 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
17494 | |
17495 | /* j(al)r $at. */ | |
17496 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
66b3e8da | 17497 | insn = 0x0000f809; |
4a6a3df4 | 17498 | else |
66b3e8da MR |
17499 | insn = 0x00000008; |
17500 | insn |= at << OP_SH_RS; | |
4a6a3df4 | 17501 | |
4d68580a | 17502 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
17503 | } |
17504 | } | |
17505 | ||
4a6a3df4 | 17506 | fragp->fr_fix += fragp->fr_var; |
4d68580a | 17507 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); |
4a6a3df4 AO |
17508 | return; |
17509 | } | |
17510 | ||
df58fc94 RS |
17511 | /* Relax microMIPS branches. */ |
17512 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) | |
17513 | { | |
4d68580a | 17514 | char *buf = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
17515 | bfd_boolean compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); |
17516 | bfd_boolean al = RELAX_MICROMIPS_LINK (fragp->fr_subtype); | |
17517 | int type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
2309ddf2 | 17518 | bfd_boolean short_ds; |
df58fc94 RS |
17519 | unsigned long insn; |
17520 | expressionS exp; | |
17521 | fixS *fixp; | |
17522 | ||
17523 | exp.X_op = O_symbol; | |
17524 | exp.X_add_symbol = fragp->fr_symbol; | |
17525 | exp.X_add_number = fragp->fr_offset; | |
17526 | ||
17527 | fragp->fr_fix += fragp->fr_var; | |
17528 | ||
17529 | /* Handle 16-bit branches that fit or are forced to fit. */ | |
17530 | if (type != 0 && !RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
17531 | { | |
17532 | /* We generate a fixup instead of applying it right now, | |
17533 | because if there is linker relaxation, we're going to | |
17534 | need the relocations. */ | |
17535 | if (type == 'D') | |
4d68580a | 17536 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 2, &exp, TRUE, |
df58fc94 RS |
17537 | BFD_RELOC_MICROMIPS_10_PCREL_S1); |
17538 | else if (type == 'E') | |
4d68580a | 17539 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 2, &exp, TRUE, |
df58fc94 RS |
17540 | BFD_RELOC_MICROMIPS_7_PCREL_S1); |
17541 | else | |
17542 | abort (); | |
17543 | ||
17544 | fixp->fx_file = fragp->fr_file; | |
17545 | fixp->fx_line = fragp->fr_line; | |
17546 | ||
17547 | /* These relocations can have an addend that won't fit in | |
17548 | 2 octets. */ | |
17549 | fixp->fx_no_overflow = 1; | |
17550 | ||
17551 | return; | |
17552 | } | |
17553 | ||
2309ddf2 | 17554 | /* Handle 32-bit branches that fit or are forced to fit. */ |
df58fc94 RS |
17555 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) |
17556 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17557 | { | |
17558 | /* We generate a fixup instead of applying it right now, | |
17559 | because if there is linker relaxation, we're going to | |
17560 | need the relocations. */ | |
4d68580a RS |
17561 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, TRUE, |
17562 | BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
df58fc94 RS |
17563 | fixp->fx_file = fragp->fr_file; |
17564 | fixp->fx_line = fragp->fr_line; | |
17565 | ||
17566 | if (type == 0) | |
17567 | return; | |
17568 | } | |
17569 | ||
17570 | /* Relax 16-bit branches to 32-bit branches. */ | |
17571 | if (type != 0) | |
17572 | { | |
4d68580a | 17573 | insn = read_compressed_insn (buf, 2); |
df58fc94 RS |
17574 | |
17575 | if ((insn & 0xfc00) == 0xcc00) /* b16 */ | |
17576 | insn = 0x94000000; /* beq */ | |
17577 | else if ((insn & 0xdc00) == 0x8c00) /* beqz16/bnez16 */ | |
17578 | { | |
17579 | unsigned long regno; | |
17580 | ||
17581 | regno = (insn >> MICROMIPSOP_SH_MD) & MICROMIPSOP_MASK_MD; | |
17582 | regno = micromips_to_32_reg_d_map [regno]; | |
17583 | insn = ((insn & 0x2000) << 16) | 0x94000000; /* beq/bne */ | |
17584 | insn |= regno << MICROMIPSOP_SH_RS; | |
17585 | } | |
17586 | else | |
17587 | abort (); | |
17588 | ||
17589 | /* Nothing else to do, just write it out. */ | |
17590 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) | |
17591 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17592 | { | |
4d68580a RS |
17593 | buf = write_compressed_insn (buf, insn, 4); |
17594 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); | |
df58fc94 RS |
17595 | return; |
17596 | } | |
17597 | } | |
17598 | else | |
4d68580a | 17599 | insn = read_compressed_insn (buf, 4); |
df58fc94 RS |
17600 | |
17601 | /* Relax 32-bit branches to a sequence of instructions. */ | |
17602 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
1661c76c | 17603 | _("relaxed out-of-range branch into a jump")); |
df58fc94 | 17604 | |
2309ddf2 MR |
17605 | /* Set the short-delay-slot bit. */ |
17606 | short_ds = al && (insn & 0x02000000) != 0; | |
df58fc94 RS |
17607 | |
17608 | if (!RELAX_MICROMIPS_UNCOND (fragp->fr_subtype)) | |
17609 | { | |
17610 | symbolS *l; | |
17611 | ||
17612 | /* Reverse the branch. */ | |
17613 | if ((insn & 0xfc000000) == 0x94000000 /* beq */ | |
17614 | || (insn & 0xfc000000) == 0xb4000000) /* bne */ | |
17615 | insn ^= 0x20000000; | |
17616 | else if ((insn & 0xffe00000) == 0x40000000 /* bltz */ | |
17617 | || (insn & 0xffe00000) == 0x40400000 /* bgez */ | |
17618 | || (insn & 0xffe00000) == 0x40800000 /* blez */ | |
17619 | || (insn & 0xffe00000) == 0x40c00000 /* bgtz */ | |
17620 | || (insn & 0xffe00000) == 0x40a00000 /* bnezc */ | |
17621 | || (insn & 0xffe00000) == 0x40e00000 /* beqzc */ | |
17622 | || (insn & 0xffe00000) == 0x40200000 /* bltzal */ | |
17623 | || (insn & 0xffe00000) == 0x40600000 /* bgezal */ | |
17624 | || (insn & 0xffe00000) == 0x42200000 /* bltzals */ | |
17625 | || (insn & 0xffe00000) == 0x42600000) /* bgezals */ | |
17626 | insn ^= 0x00400000; | |
17627 | else if ((insn & 0xffe30000) == 0x43800000 /* bc1f */ | |
17628 | || (insn & 0xffe30000) == 0x43a00000 /* bc1t */ | |
17629 | || (insn & 0xffe30000) == 0x42800000 /* bc2f */ | |
17630 | || (insn & 0xffe30000) == 0x42a00000) /* bc2t */ | |
17631 | insn ^= 0x00200000; | |
56d438b1 CF |
17632 | else if ((insn & 0xff000000) == 0x83000000 /* BZ.df |
17633 | BNZ.df */ | |
17634 | || (insn & 0xff600000) == 0x81600000) /* BZ.V | |
17635 | BNZ.V */ | |
17636 | insn ^= 0x00800000; | |
df58fc94 RS |
17637 | else |
17638 | abort (); | |
17639 | ||
17640 | if (al) | |
17641 | { | |
17642 | /* Clear the and-link and short-delay-slot bits. */ | |
17643 | gas_assert ((insn & 0xfda00000) == 0x40200000); | |
17644 | ||
17645 | /* bltzal 0x40200000 bgezal 0x40600000 */ | |
17646 | /* bltzals 0x42200000 bgezals 0x42600000 */ | |
17647 | insn &= ~0x02200000; | |
17648 | } | |
17649 | ||
17650 | /* Make a label at the end for use with the branch. */ | |
17651 | l = symbol_new (micromips_label_name (), asec, fragp->fr_fix, fragp); | |
17652 | micromips_label_inc (); | |
f3ded42a | 17653 | S_SET_OTHER (l, ELF_ST_SET_MICROMIPS (S_GET_OTHER (l))); |
df58fc94 RS |
17654 | |
17655 | /* Refer to it. */ | |
4d68580a RS |
17656 | fixp = fix_new (fragp, buf - fragp->fr_literal, 4, l, 0, TRUE, |
17657 | BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
df58fc94 RS |
17658 | fixp->fx_file = fragp->fr_file; |
17659 | fixp->fx_line = fragp->fr_line; | |
17660 | ||
17661 | /* Branch over the jump. */ | |
4d68580a | 17662 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 | 17663 | if (!compact) |
4d68580a RS |
17664 | /* nop */ |
17665 | buf = write_compressed_insn (buf, 0x0c00, 2); | |
df58fc94 RS |
17666 | } |
17667 | ||
17668 | if (mips_pic == NO_PIC) | |
17669 | { | |
2309ddf2 MR |
17670 | unsigned long jal = short_ds ? 0x74000000 : 0xf4000000; /* jal/s */ |
17671 | ||
df58fc94 RS |
17672 | /* j/jal/jals <sym> R_MICROMIPS_26_S1 */ |
17673 | insn = al ? jal : 0xd4000000; | |
17674 | ||
4d68580a RS |
17675 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
17676 | BFD_RELOC_MICROMIPS_JMP); | |
df58fc94 RS |
17677 | fixp->fx_file = fragp->fr_file; |
17678 | fixp->fx_line = fragp->fr_line; | |
17679 | ||
4d68580a | 17680 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 | 17681 | if (compact) |
4d68580a RS |
17682 | /* nop */ |
17683 | buf = write_compressed_insn (buf, 0x0c00, 2); | |
df58fc94 RS |
17684 | } |
17685 | else | |
17686 | { | |
17687 | unsigned long at = RELAX_MICROMIPS_AT (fragp->fr_subtype); | |
2309ddf2 MR |
17688 | unsigned long jalr = short_ds ? 0x45e0 : 0x45c0; /* jalr/s */ |
17689 | unsigned long jr = compact ? 0x45a0 : 0x4580; /* jr/c */ | |
df58fc94 RS |
17690 | |
17691 | /* lw/ld $at, <sym>($gp) R_MICROMIPS_GOT16 */ | |
17692 | insn = HAVE_64BIT_ADDRESSES ? 0xdc1c0000 : 0xfc1c0000; | |
17693 | insn |= at << MICROMIPSOP_SH_RT; | |
17694 | ||
17695 | if (exp.X_add_number) | |
17696 | { | |
17697 | exp.X_add_symbol = make_expr_symbol (&exp); | |
17698 | exp.X_add_number = 0; | |
17699 | } | |
17700 | ||
4d68580a RS |
17701 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
17702 | BFD_RELOC_MICROMIPS_GOT16); | |
df58fc94 RS |
17703 | fixp->fx_file = fragp->fr_file; |
17704 | fixp->fx_line = fragp->fr_line; | |
17705 | ||
4d68580a | 17706 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 RS |
17707 | |
17708 | /* d/addiu $at, $at, <sym> R_MICROMIPS_LO16 */ | |
17709 | insn = HAVE_64BIT_ADDRESSES ? 0x5c000000 : 0x30000000; | |
17710 | insn |= at << MICROMIPSOP_SH_RT | at << MICROMIPSOP_SH_RS; | |
17711 | ||
4d68580a RS |
17712 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
17713 | BFD_RELOC_MICROMIPS_LO16); | |
df58fc94 RS |
17714 | fixp->fx_file = fragp->fr_file; |
17715 | fixp->fx_line = fragp->fr_line; | |
17716 | ||
4d68580a | 17717 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 RS |
17718 | |
17719 | /* jr/jrc/jalr/jalrs $at */ | |
17720 | insn = al ? jalr : jr; | |
17721 | insn |= at << MICROMIPSOP_SH_MJ; | |
17722 | ||
4d68580a | 17723 | buf = write_compressed_insn (buf, insn, 2); |
df58fc94 RS |
17724 | } |
17725 | ||
4d68580a | 17726 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); |
df58fc94 RS |
17727 | return; |
17728 | } | |
17729 | ||
252b5132 RH |
17730 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
17731 | { | |
17732 | int type; | |
3ccad066 | 17733 | const struct mips_int_operand *operand; |
252b5132 | 17734 | offsetT val; |
5c04167a RS |
17735 | char *buf; |
17736 | unsigned int user_length, length; | |
252b5132 | 17737 | unsigned long insn; |
5c04167a | 17738 | bfd_boolean ext; |
252b5132 RH |
17739 | |
17740 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
3ccad066 | 17741 | operand = mips16_immed_operand (type, FALSE); |
252b5132 | 17742 | |
5c04167a | 17743 | ext = RELAX_MIPS16_EXTENDED (fragp->fr_subtype); |
5f5f22c0 | 17744 | val = resolve_symbol_value (fragp->fr_symbol); |
3ccad066 | 17745 | if (operand->root.type == OP_PCREL) |
252b5132 | 17746 | { |
3ccad066 | 17747 | const struct mips_pcrel_operand *pcrel_op; |
252b5132 RH |
17748 | addressT addr; |
17749 | ||
3ccad066 | 17750 | pcrel_op = (const struct mips_pcrel_operand *) operand; |
252b5132 RH |
17751 | addr = fragp->fr_address + fragp->fr_fix; |
17752 | ||
17753 | /* The rules for the base address of a PC relative reloc are | |
17754 | complicated; see mips16_extended_frag. */ | |
3ccad066 | 17755 | if (pcrel_op->include_isa_bit) |
252b5132 RH |
17756 | { |
17757 | addr += 2; | |
17758 | if (ext) | |
17759 | addr += 2; | |
17760 | /* Ignore the low bit in the target, since it will be | |
17761 | set for a text label. */ | |
3ccad066 | 17762 | val &= -2; |
252b5132 RH |
17763 | } |
17764 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
17765 | addr -= 4; | |
17766 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
17767 | addr -= 2; | |
17768 | ||
3ccad066 | 17769 | addr &= -(1 << pcrel_op->align_log2); |
252b5132 RH |
17770 | val -= addr; |
17771 | ||
17772 | /* Make sure the section winds up with the alignment we have | |
17773 | assumed. */ | |
3ccad066 RS |
17774 | if (operand->shift > 0) |
17775 | record_alignment (asec, operand->shift); | |
252b5132 RH |
17776 | } |
17777 | ||
17778 | if (ext | |
17779 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
17780 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
17781 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
17782 | _("extended instruction in delay slot")); | |
17783 | ||
5c04167a | 17784 | buf = fragp->fr_literal + fragp->fr_fix; |
252b5132 | 17785 | |
4d68580a | 17786 | insn = read_compressed_insn (buf, 2); |
5c04167a RS |
17787 | if (ext) |
17788 | insn |= MIPS16_EXTEND; | |
252b5132 | 17789 | |
5c04167a RS |
17790 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) |
17791 | user_length = 4; | |
17792 | else if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
17793 | user_length = 2; | |
17794 | else | |
17795 | user_length = 0; | |
17796 | ||
43c0598f | 17797 | mips16_immed (fragp->fr_file, fragp->fr_line, type, |
c150d1d2 | 17798 | BFD_RELOC_UNUSED, val, user_length, &insn); |
252b5132 | 17799 | |
5c04167a RS |
17800 | length = (ext ? 4 : 2); |
17801 | gas_assert (mips16_opcode_length (insn) == length); | |
17802 | write_compressed_insn (buf, insn, length); | |
17803 | fragp->fr_fix += length; | |
252b5132 RH |
17804 | } |
17805 | else | |
17806 | { | |
df58fc94 RS |
17807 | relax_substateT subtype = fragp->fr_subtype; |
17808 | bfd_boolean second_longer = (subtype & RELAX_SECOND_LONGER) != 0; | |
17809 | bfd_boolean use_second = (subtype & RELAX_USE_SECOND) != 0; | |
4d7206a2 RS |
17810 | int first, second; |
17811 | fixS *fixp; | |
252b5132 | 17812 | |
df58fc94 RS |
17813 | first = RELAX_FIRST (subtype); |
17814 | second = RELAX_SECOND (subtype); | |
4d7206a2 | 17815 | fixp = (fixS *) fragp->fr_opcode; |
252b5132 | 17816 | |
df58fc94 RS |
17817 | /* If the delay slot chosen does not match the size of the instruction, |
17818 | then emit a warning. */ | |
17819 | if ((!use_second && (subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0) | |
17820 | || (use_second && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0)) | |
17821 | { | |
17822 | relax_substateT s; | |
17823 | const char *msg; | |
17824 | ||
17825 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
17826 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
17827 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
17828 | msg = macro_warning (s); | |
17829 | if (msg != NULL) | |
db9b2be4 | 17830 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 RS |
17831 | subtype &= ~s; |
17832 | } | |
17833 | ||
584892a6 | 17834 | /* Possibly emit a warning if we've chosen the longer option. */ |
df58fc94 | 17835 | if (use_second == second_longer) |
584892a6 | 17836 | { |
df58fc94 RS |
17837 | relax_substateT s; |
17838 | const char *msg; | |
17839 | ||
17840 | s = (subtype | |
17841 | & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT)); | |
17842 | msg = macro_warning (s); | |
17843 | if (msg != NULL) | |
db9b2be4 | 17844 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 | 17845 | subtype &= ~s; |
584892a6 RS |
17846 | } |
17847 | ||
4d7206a2 RS |
17848 | /* Go through all the fixups for the first sequence. Disable them |
17849 | (by marking them as done) if we're going to use the second | |
17850 | sequence instead. */ | |
17851 | while (fixp | |
17852 | && fixp->fx_frag == fragp | |
17853 | && fixp->fx_where < fragp->fr_fix - second) | |
17854 | { | |
df58fc94 | 17855 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
17856 | fixp->fx_done = 1; |
17857 | fixp = fixp->fx_next; | |
17858 | } | |
252b5132 | 17859 | |
4d7206a2 RS |
17860 | /* Go through the fixups for the second sequence. Disable them if |
17861 | we're going to use the first sequence, otherwise adjust their | |
17862 | addresses to account for the relaxation. */ | |
17863 | while (fixp && fixp->fx_frag == fragp) | |
17864 | { | |
df58fc94 | 17865 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
17866 | fixp->fx_where -= first; |
17867 | else | |
17868 | fixp->fx_done = 1; | |
17869 | fixp = fixp->fx_next; | |
17870 | } | |
17871 | ||
17872 | /* Now modify the frag contents. */ | |
df58fc94 | 17873 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
17874 | { |
17875 | char *start; | |
17876 | ||
17877 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
17878 | memmove (start, start + first, second); | |
17879 | fragp->fr_fix -= first; | |
17880 | } | |
17881 | else | |
17882 | fragp->fr_fix -= second; | |
252b5132 RH |
17883 | } |
17884 | } | |
17885 | ||
252b5132 RH |
17886 | /* This function is called after the relocs have been generated. |
17887 | We've been storing mips16 text labels as odd. Here we convert them | |
17888 | back to even for the convenience of the debugger. */ | |
17889 | ||
17890 | void | |
17a2f251 | 17891 | mips_frob_file_after_relocs (void) |
252b5132 RH |
17892 | { |
17893 | asymbol **syms; | |
17894 | unsigned int count, i; | |
17895 | ||
252b5132 RH |
17896 | syms = bfd_get_outsymbols (stdoutput); |
17897 | count = bfd_get_symcount (stdoutput); | |
17898 | for (i = 0; i < count; i++, syms++) | |
df58fc94 RS |
17899 | if (ELF_ST_IS_COMPRESSED (elf_symbol (*syms)->internal_elf_sym.st_other) |
17900 | && ((*syms)->value & 1) != 0) | |
17901 | { | |
17902 | (*syms)->value &= ~1; | |
17903 | /* If the symbol has an odd size, it was probably computed | |
17904 | incorrectly, so adjust that as well. */ | |
17905 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
17906 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
17907 | } | |
252b5132 RH |
17908 | } |
17909 | ||
a1facbec MR |
17910 | /* This function is called whenever a label is defined, including fake |
17911 | labels instantiated off the dot special symbol. It is used when | |
17912 | handling branch delays; if a branch has a label, we assume we cannot | |
17913 | move it. This also bumps the value of the symbol by 1 in compressed | |
17914 | code. */ | |
252b5132 | 17915 | |
e1b47bd5 | 17916 | static void |
a1facbec | 17917 | mips_record_label (symbolS *sym) |
252b5132 | 17918 | { |
a8dbcb85 | 17919 | segment_info_type *si = seg_info (now_seg); |
252b5132 RH |
17920 | struct insn_label_list *l; |
17921 | ||
17922 | if (free_insn_labels == NULL) | |
325801bd | 17923 | l = XNEW (struct insn_label_list); |
252b5132 RH |
17924 | else |
17925 | { | |
17926 | l = free_insn_labels; | |
17927 | free_insn_labels = l->next; | |
17928 | } | |
17929 | ||
17930 | l->label = sym; | |
a8dbcb85 TS |
17931 | l->next = si->label_list; |
17932 | si->label_list = l; | |
a1facbec | 17933 | } |
07a53e5c | 17934 | |
a1facbec MR |
17935 | /* This function is called as tc_frob_label() whenever a label is defined |
17936 | and adds a DWARF-2 record we only want for true labels. */ | |
17937 | ||
17938 | void | |
17939 | mips_define_label (symbolS *sym) | |
17940 | { | |
17941 | mips_record_label (sym); | |
07a53e5c | 17942 | dwarf2_emit_label (sym); |
252b5132 | 17943 | } |
e1b47bd5 RS |
17944 | |
17945 | /* This function is called by tc_new_dot_label whenever a new dot symbol | |
17946 | is defined. */ | |
17947 | ||
17948 | void | |
17949 | mips_add_dot_label (symbolS *sym) | |
17950 | { | |
17951 | mips_record_label (sym); | |
17952 | if (mips_assembling_insn && HAVE_CODE_COMPRESSION) | |
17953 | mips_compressed_mark_label (sym); | |
17954 | } | |
252b5132 | 17955 | \f |
351cdf24 MF |
17956 | /* Converting ASE flags from internal to .MIPS.abiflags values. */ |
17957 | static unsigned int | |
17958 | mips_convert_ase_flags (int ase) | |
17959 | { | |
17960 | unsigned int ext_ases = 0; | |
17961 | ||
17962 | if (ase & ASE_DSP) | |
17963 | ext_ases |= AFL_ASE_DSP; | |
17964 | if (ase & ASE_DSPR2) | |
17965 | ext_ases |= AFL_ASE_DSPR2; | |
8f4f9071 MF |
17966 | if (ase & ASE_DSPR3) |
17967 | ext_ases |= AFL_ASE_DSPR3; | |
351cdf24 MF |
17968 | if (ase & ASE_EVA) |
17969 | ext_ases |= AFL_ASE_EVA; | |
17970 | if (ase & ASE_MCU) | |
17971 | ext_ases |= AFL_ASE_MCU; | |
17972 | if (ase & ASE_MDMX) | |
17973 | ext_ases |= AFL_ASE_MDMX; | |
17974 | if (ase & ASE_MIPS3D) | |
17975 | ext_ases |= AFL_ASE_MIPS3D; | |
17976 | if (ase & ASE_MT) | |
17977 | ext_ases |= AFL_ASE_MT; | |
17978 | if (ase & ASE_SMARTMIPS) | |
17979 | ext_ases |= AFL_ASE_SMARTMIPS; | |
17980 | if (ase & ASE_VIRT) | |
17981 | ext_ases |= AFL_ASE_VIRT; | |
17982 | if (ase & ASE_MSA) | |
17983 | ext_ases |= AFL_ASE_MSA; | |
17984 | if (ase & ASE_XPA) | |
17985 | ext_ases |= AFL_ASE_XPA; | |
17986 | ||
17987 | return ext_ases; | |
17988 | } | |
252b5132 RH |
17989 | /* Some special processing for a MIPS ELF file. */ |
17990 | ||
17991 | void | |
17a2f251 | 17992 | mips_elf_final_processing (void) |
252b5132 | 17993 | { |
351cdf24 MF |
17994 | int fpabi; |
17995 | Elf_Internal_ABIFlags_v0 flags; | |
17996 | ||
17997 | flags.version = 0; | |
17998 | flags.isa_rev = 0; | |
17999 | switch (file_mips_opts.isa) | |
18000 | { | |
18001 | case INSN_ISA1: | |
18002 | flags.isa_level = 1; | |
18003 | break; | |
18004 | case INSN_ISA2: | |
18005 | flags.isa_level = 2; | |
18006 | break; | |
18007 | case INSN_ISA3: | |
18008 | flags.isa_level = 3; | |
18009 | break; | |
18010 | case INSN_ISA4: | |
18011 | flags.isa_level = 4; | |
18012 | break; | |
18013 | case INSN_ISA5: | |
18014 | flags.isa_level = 5; | |
18015 | break; | |
18016 | case INSN_ISA32: | |
18017 | flags.isa_level = 32; | |
18018 | flags.isa_rev = 1; | |
18019 | break; | |
18020 | case INSN_ISA32R2: | |
18021 | flags.isa_level = 32; | |
18022 | flags.isa_rev = 2; | |
18023 | break; | |
18024 | case INSN_ISA32R3: | |
18025 | flags.isa_level = 32; | |
18026 | flags.isa_rev = 3; | |
18027 | break; | |
18028 | case INSN_ISA32R5: | |
18029 | flags.isa_level = 32; | |
18030 | flags.isa_rev = 5; | |
18031 | break; | |
09c14161 MF |
18032 | case INSN_ISA32R6: |
18033 | flags.isa_level = 32; | |
18034 | flags.isa_rev = 6; | |
18035 | break; | |
351cdf24 MF |
18036 | case INSN_ISA64: |
18037 | flags.isa_level = 64; | |
18038 | flags.isa_rev = 1; | |
18039 | break; | |
18040 | case INSN_ISA64R2: | |
18041 | flags.isa_level = 64; | |
18042 | flags.isa_rev = 2; | |
18043 | break; | |
18044 | case INSN_ISA64R3: | |
18045 | flags.isa_level = 64; | |
18046 | flags.isa_rev = 3; | |
18047 | break; | |
18048 | case INSN_ISA64R5: | |
18049 | flags.isa_level = 64; | |
18050 | flags.isa_rev = 5; | |
18051 | break; | |
09c14161 MF |
18052 | case INSN_ISA64R6: |
18053 | flags.isa_level = 64; | |
18054 | flags.isa_rev = 6; | |
18055 | break; | |
351cdf24 MF |
18056 | } |
18057 | ||
18058 | flags.gpr_size = file_mips_opts.gp == 32 ? AFL_REG_32 : AFL_REG_64; | |
18059 | flags.cpr1_size = file_mips_opts.soft_float ? AFL_REG_NONE | |
18060 | : (file_mips_opts.ase & ASE_MSA) ? AFL_REG_128 | |
18061 | : (file_mips_opts.fp == 64) ? AFL_REG_64 | |
18062 | : AFL_REG_32; | |
18063 | flags.cpr2_size = AFL_REG_NONE; | |
18064 | flags.fp_abi = bfd_elf_get_obj_attr_int (stdoutput, OBJ_ATTR_GNU, | |
18065 | Tag_GNU_MIPS_ABI_FP); | |
18066 | flags.isa_ext = bfd_mips_isa_ext (stdoutput); | |
18067 | flags.ases = mips_convert_ase_flags (file_mips_opts.ase); | |
18068 | if (file_ase_mips16) | |
18069 | flags.ases |= AFL_ASE_MIPS16; | |
18070 | if (file_ase_micromips) | |
18071 | flags.ases |= AFL_ASE_MICROMIPS; | |
18072 | flags.flags1 = 0; | |
18073 | if ((ISA_HAS_ODD_SINGLE_FPR (file_mips_opts.isa, file_mips_opts.arch) | |
18074 | || file_mips_opts.fp == 64) | |
18075 | && file_mips_opts.oddspreg) | |
18076 | flags.flags1 |= AFL_FLAGS1_ODDSPREG; | |
18077 | flags.flags2 = 0; | |
18078 | ||
18079 | bfd_mips_elf_swap_abiflags_v0_out (stdoutput, &flags, | |
18080 | ((Elf_External_ABIFlags_v0 *) | |
18081 | mips_flags_frag)); | |
18082 | ||
252b5132 | 18083 | /* Write out the register information. */ |
316f5878 | 18084 | if (mips_abi != N64_ABI) |
252b5132 RH |
18085 | { |
18086 | Elf32_RegInfo s; | |
18087 | ||
18088 | s.ri_gprmask = mips_gprmask; | |
18089 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18090 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18091 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18092 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18093 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18094 | ||
18095 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
18096 | ((Elf32_External_RegInfo *) | |
18097 | mips_regmask_frag)); | |
18098 | } | |
18099 | else | |
18100 | { | |
18101 | Elf64_Internal_RegInfo s; | |
18102 | ||
18103 | s.ri_gprmask = mips_gprmask; | |
18104 | s.ri_pad = 0; | |
18105 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18106 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18107 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18108 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18109 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18110 | ||
18111 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
18112 | ((Elf64_External_RegInfo *) | |
18113 | mips_regmask_frag)); | |
18114 | } | |
18115 | ||
18116 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
18117 | sort of BFD interface for this. */ | |
18118 | if (mips_any_noreorder) | |
18119 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
18120 | if (mips_pic != NO_PIC) | |
143d77c5 | 18121 | { |
8b828383 | 18122 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
18123 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
18124 | } | |
18125 | if (mips_abicalls) | |
18126 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 18127 | |
b015e599 AP |
18128 | /* Set MIPS ELF flags for ASEs. Note that not all ASEs have flags |
18129 | defined at present; this might need to change in future. */ | |
a4672219 TS |
18130 | if (file_ase_mips16) |
18131 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
df58fc94 RS |
18132 | if (file_ase_micromips) |
18133 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MICROMIPS; | |
919731af | 18134 | if (file_mips_opts.ase & ASE_MDMX) |
deec1734 | 18135 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; |
1f25f5d3 | 18136 | |
bdaaa2e1 | 18137 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 18138 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 18139 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 18140 | else if (mips_abi == O64_ABI) |
252b5132 | 18141 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 18142 | else if (mips_abi == EABI_ABI) |
252b5132 | 18143 | { |
bad1aba3 | 18144 | if (file_mips_opts.gp == 64) |
252b5132 RH |
18145 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
18146 | else | |
18147 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
18148 | } | |
316f5878 | 18149 | else if (mips_abi == N32_ABI) |
be00bddd TS |
18150 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
18151 | ||
c9914766 | 18152 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
18153 | |
18154 | if (mips_32bitmode) | |
18155 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 | 18156 | |
7361da2c | 18157 | if (mips_nan2008 == 1) |
ba92f887 MR |
18158 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NAN2008; |
18159 | ||
ad3fea08 | 18160 | /* 32 bit code with 64 bit FP registers. */ |
351cdf24 MF |
18161 | fpabi = bfd_elf_get_obj_attr_int (stdoutput, OBJ_ATTR_GNU, |
18162 | Tag_GNU_MIPS_ABI_FP); | |
18163 | if (fpabi == Val_GNU_MIPS_ABI_FP_OLD_64) | |
f1c38003 | 18164 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_FP64; |
252b5132 | 18165 | } |
252b5132 | 18166 | \f |
beae10d5 | 18167 | typedef struct proc { |
9b2f1d35 EC |
18168 | symbolS *func_sym; |
18169 | symbolS *func_end_sym; | |
beae10d5 KH |
18170 | unsigned long reg_mask; |
18171 | unsigned long reg_offset; | |
18172 | unsigned long fpreg_mask; | |
18173 | unsigned long fpreg_offset; | |
18174 | unsigned long frame_offset; | |
18175 | unsigned long frame_reg; | |
18176 | unsigned long pc_reg; | |
18177 | } procS; | |
252b5132 RH |
18178 | |
18179 | static procS cur_proc; | |
18180 | static procS *cur_proc_ptr; | |
18181 | static int numprocs; | |
18182 | ||
df58fc94 RS |
18183 | /* Implement NOP_OPCODE. We encode a MIPS16 nop as "1", a microMIPS nop |
18184 | as "2", and a normal nop as "0". */ | |
18185 | ||
18186 | #define NOP_OPCODE_MIPS 0 | |
18187 | #define NOP_OPCODE_MIPS16 1 | |
18188 | #define NOP_OPCODE_MICROMIPS 2 | |
742a56fe RS |
18189 | |
18190 | char | |
18191 | mips_nop_opcode (void) | |
18192 | { | |
df58fc94 RS |
18193 | if (seg_info (now_seg)->tc_segment_info_data.micromips) |
18194 | return NOP_OPCODE_MICROMIPS; | |
18195 | else if (seg_info (now_seg)->tc_segment_info_data.mips16) | |
18196 | return NOP_OPCODE_MIPS16; | |
18197 | else | |
18198 | return NOP_OPCODE_MIPS; | |
742a56fe RS |
18199 | } |
18200 | ||
df58fc94 RS |
18201 | /* Fill in an rs_align_code fragment. Unlike elsewhere we want to use |
18202 | 32-bit microMIPS NOPs here (if applicable). */ | |
a19d8eb0 | 18203 | |
0a9ef439 | 18204 | void |
17a2f251 | 18205 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 18206 | { |
df58fc94 | 18207 | char nop_opcode; |
742a56fe | 18208 | char *p; |
c67a084a NC |
18209 | int bytes, size, excess; |
18210 | valueT opcode; | |
742a56fe | 18211 | |
0a9ef439 RH |
18212 | if (fragp->fr_type != rs_align_code) |
18213 | return; | |
18214 | ||
742a56fe | 18215 | p = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
18216 | nop_opcode = *p; |
18217 | switch (nop_opcode) | |
a19d8eb0 | 18218 | { |
df58fc94 RS |
18219 | case NOP_OPCODE_MICROMIPS: |
18220 | opcode = micromips_nop32_insn.insn_opcode; | |
18221 | size = 4; | |
18222 | break; | |
18223 | case NOP_OPCODE_MIPS16: | |
c67a084a NC |
18224 | opcode = mips16_nop_insn.insn_opcode; |
18225 | size = 2; | |
df58fc94 RS |
18226 | break; |
18227 | case NOP_OPCODE_MIPS: | |
18228 | default: | |
c67a084a NC |
18229 | opcode = nop_insn.insn_opcode; |
18230 | size = 4; | |
df58fc94 | 18231 | break; |
c67a084a | 18232 | } |
a19d8eb0 | 18233 | |
c67a084a NC |
18234 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
18235 | excess = bytes % size; | |
df58fc94 RS |
18236 | |
18237 | /* Handle the leading part if we're not inserting a whole number of | |
18238 | instructions, and make it the end of the fixed part of the frag. | |
18239 | Try to fit in a short microMIPS NOP if applicable and possible, | |
18240 | and use zeroes otherwise. */ | |
18241 | gas_assert (excess < 4); | |
18242 | fragp->fr_fix += excess; | |
18243 | switch (excess) | |
c67a084a | 18244 | { |
df58fc94 RS |
18245 | case 3: |
18246 | *p++ = '\0'; | |
18247 | /* Fall through. */ | |
18248 | case 2: | |
833794fc | 18249 | if (nop_opcode == NOP_OPCODE_MICROMIPS && !mips_opts.insn32) |
df58fc94 | 18250 | { |
4d68580a | 18251 | p = write_compressed_insn (p, micromips_nop16_insn.insn_opcode, 2); |
df58fc94 RS |
18252 | break; |
18253 | } | |
18254 | *p++ = '\0'; | |
18255 | /* Fall through. */ | |
18256 | case 1: | |
18257 | *p++ = '\0'; | |
18258 | /* Fall through. */ | |
18259 | case 0: | |
18260 | break; | |
a19d8eb0 | 18261 | } |
c67a084a NC |
18262 | |
18263 | md_number_to_chars (p, opcode, size); | |
18264 | fragp->fr_var = size; | |
a19d8eb0 CP |
18265 | } |
18266 | ||
252b5132 | 18267 | static long |
17a2f251 | 18268 | get_number (void) |
252b5132 RH |
18269 | { |
18270 | int negative = 0; | |
18271 | long val = 0; | |
18272 | ||
18273 | if (*input_line_pointer == '-') | |
18274 | { | |
18275 | ++input_line_pointer; | |
18276 | negative = 1; | |
18277 | } | |
3882b010 | 18278 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 18279 | as_bad (_("expected simple number")); |
252b5132 RH |
18280 | if (input_line_pointer[0] == '0') |
18281 | { | |
18282 | if (input_line_pointer[1] == 'x') | |
18283 | { | |
18284 | input_line_pointer += 2; | |
3882b010 | 18285 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
18286 | { |
18287 | val <<= 4; | |
18288 | val |= hex_value (*input_line_pointer++); | |
18289 | } | |
18290 | return negative ? -val : val; | |
18291 | } | |
18292 | else | |
18293 | { | |
18294 | ++input_line_pointer; | |
3882b010 | 18295 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18296 | { |
18297 | val <<= 3; | |
18298 | val |= *input_line_pointer++ - '0'; | |
18299 | } | |
18300 | return negative ? -val : val; | |
18301 | } | |
18302 | } | |
3882b010 | 18303 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18304 | { |
18305 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
18306 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 18307 | as_warn (_("invalid number")); |
252b5132 RH |
18308 | return -1; |
18309 | } | |
3882b010 | 18310 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18311 | { |
18312 | val *= 10; | |
18313 | val += *input_line_pointer++ - '0'; | |
18314 | } | |
18315 | return negative ? -val : val; | |
18316 | } | |
18317 | ||
18318 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
18319 | is an initial number which is the ECOFF file index. In the non-ECOFF |
18320 | case .file implies DWARF-2. */ | |
18321 | ||
18322 | static void | |
17a2f251 | 18323 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 18324 | { |
ecb4347a DJ |
18325 | static int first_file_directive = 0; |
18326 | ||
c5dd6aab DJ |
18327 | if (ECOFF_DEBUGGING) |
18328 | { | |
18329 | get_number (); | |
18330 | s_app_file (0); | |
18331 | } | |
18332 | else | |
ecb4347a DJ |
18333 | { |
18334 | char *filename; | |
18335 | ||
18336 | filename = dwarf2_directive_file (0); | |
18337 | ||
18338 | /* Versions of GCC up to 3.1 start files with a ".file" | |
18339 | directive even for stabs output. Make sure that this | |
18340 | ".file" is handled. Note that you need a version of GCC | |
18341 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
18342 | if (filename != NULL && ! first_file_directive) | |
18343 | { | |
18344 | (void) new_logical_line (filename, -1); | |
c04f5787 | 18345 | s_app_file_string (filename, 0); |
ecb4347a DJ |
18346 | } |
18347 | first_file_directive = 1; | |
18348 | } | |
c5dd6aab DJ |
18349 | } |
18350 | ||
18351 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
18352 | |
18353 | static void | |
17a2f251 | 18354 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 18355 | { |
c5dd6aab DJ |
18356 | if (!ECOFF_DEBUGGING) |
18357 | dwarf2_directive_loc (0); | |
252b5132 RH |
18358 | } |
18359 | ||
252b5132 RH |
18360 | /* The .end directive. */ |
18361 | ||
18362 | static void | |
17a2f251 | 18363 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
18364 | { |
18365 | symbolS *p; | |
252b5132 | 18366 | |
7a621144 DJ |
18367 | /* Following functions need their own .frame and .cprestore directives. */ |
18368 | mips_frame_reg_valid = 0; | |
18369 | mips_cprestore_valid = 0; | |
18370 | ||
252b5132 RH |
18371 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
18372 | { | |
18373 | p = get_symbol (); | |
18374 | demand_empty_rest_of_line (); | |
18375 | } | |
18376 | else | |
18377 | p = NULL; | |
18378 | ||
14949570 | 18379 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
18380 | as_warn (_(".end not in text section")); |
18381 | ||
18382 | if (!cur_proc_ptr) | |
18383 | { | |
1661c76c | 18384 | as_warn (_(".end directive without a preceding .ent directive")); |
252b5132 RH |
18385 | demand_empty_rest_of_line (); |
18386 | return; | |
18387 | } | |
18388 | ||
18389 | if (p != NULL) | |
18390 | { | |
9c2799c2 | 18391 | gas_assert (S_GET_NAME (p)); |
9b2f1d35 | 18392 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
1661c76c | 18393 | as_warn (_(".end symbol does not match .ent symbol")); |
ecb4347a DJ |
18394 | |
18395 | if (debug_type == DEBUG_STABS) | |
18396 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
18397 | S_GET_NAME (p)); | |
252b5132 RH |
18398 | } |
18399 | else | |
18400 | as_warn (_(".end directive missing or unknown symbol")); | |
18401 | ||
9b2f1d35 EC |
18402 | /* Create an expression to calculate the size of the function. */ |
18403 | if (p && cur_proc_ptr) | |
18404 | { | |
18405 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
325801bd | 18406 | expressionS *exp = XNEW (expressionS); |
9b2f1d35 EC |
18407 | |
18408 | obj->size = exp; | |
18409 | exp->X_op = O_subtract; | |
18410 | exp->X_add_symbol = symbol_temp_new_now (); | |
18411 | exp->X_op_symbol = p; | |
18412 | exp->X_add_number = 0; | |
18413 | ||
18414 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
18415 | } | |
18416 | ||
ecb4347a | 18417 | /* Generate a .pdr section. */ |
f3ded42a | 18418 | if (!ECOFF_DEBUGGING && mips_flag_pdr) |
ecb4347a DJ |
18419 | { |
18420 | segT saved_seg = now_seg; | |
18421 | subsegT saved_subseg = now_subseg; | |
ecb4347a DJ |
18422 | expressionS exp; |
18423 | char *fragp; | |
252b5132 | 18424 | |
252b5132 | 18425 | #ifdef md_flush_pending_output |
ecb4347a | 18426 | md_flush_pending_output (); |
252b5132 RH |
18427 | #endif |
18428 | ||
9c2799c2 | 18429 | gas_assert (pdr_seg); |
ecb4347a | 18430 | subseg_set (pdr_seg, 0); |
252b5132 | 18431 | |
ecb4347a DJ |
18432 | /* Write the symbol. */ |
18433 | exp.X_op = O_symbol; | |
18434 | exp.X_add_symbol = p; | |
18435 | exp.X_add_number = 0; | |
18436 | emit_expr (&exp, 4); | |
252b5132 | 18437 | |
ecb4347a | 18438 | fragp = frag_more (7 * 4); |
252b5132 | 18439 | |
17a2f251 TS |
18440 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
18441 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
18442 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
18443 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
18444 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
18445 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
18446 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 18447 | |
ecb4347a DJ |
18448 | subseg_set (saved_seg, saved_subseg); |
18449 | } | |
252b5132 RH |
18450 | |
18451 | cur_proc_ptr = NULL; | |
18452 | } | |
18453 | ||
18454 | /* The .aent and .ent directives. */ | |
18455 | ||
18456 | static void | |
17a2f251 | 18457 | s_mips_ent (int aent) |
252b5132 | 18458 | { |
252b5132 | 18459 | symbolS *symbolP; |
252b5132 RH |
18460 | |
18461 | symbolP = get_symbol (); | |
18462 | if (*input_line_pointer == ',') | |
f9419b05 | 18463 | ++input_line_pointer; |
252b5132 | 18464 | SKIP_WHITESPACE (); |
3882b010 | 18465 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 18466 | || *input_line_pointer == '-') |
874e8986 | 18467 | get_number (); |
252b5132 | 18468 | |
14949570 | 18469 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
1661c76c | 18470 | as_warn (_(".ent or .aent not in text section")); |
252b5132 RH |
18471 | |
18472 | if (!aent && cur_proc_ptr) | |
9a41af64 | 18473 | as_warn (_("missing .end")); |
252b5132 RH |
18474 | |
18475 | if (!aent) | |
18476 | { | |
7a621144 DJ |
18477 | /* This function needs its own .frame and .cprestore directives. */ |
18478 | mips_frame_reg_valid = 0; | |
18479 | mips_cprestore_valid = 0; | |
18480 | ||
252b5132 RH |
18481 | cur_proc_ptr = &cur_proc; |
18482 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
18483 | ||
9b2f1d35 | 18484 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 18485 | |
f9419b05 | 18486 | ++numprocs; |
ecb4347a DJ |
18487 | |
18488 | if (debug_type == DEBUG_STABS) | |
18489 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
18490 | S_GET_NAME (symbolP)); | |
252b5132 RH |
18491 | } |
18492 | ||
7c0fc524 MR |
18493 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
18494 | ||
252b5132 RH |
18495 | demand_empty_rest_of_line (); |
18496 | } | |
18497 | ||
18498 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 18499 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 18500 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 18501 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
18502 | symbol table (in the mdebug section). */ |
18503 | ||
18504 | static void | |
17a2f251 | 18505 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 18506 | { |
f3ded42a RS |
18507 | if (ECOFF_DEBUGGING) |
18508 | s_ignore (ignore); | |
18509 | else | |
ecb4347a DJ |
18510 | { |
18511 | long val; | |
252b5132 | 18512 | |
ecb4347a DJ |
18513 | if (cur_proc_ptr == (procS *) NULL) |
18514 | { | |
18515 | as_warn (_(".frame outside of .ent")); | |
18516 | demand_empty_rest_of_line (); | |
18517 | return; | |
18518 | } | |
252b5132 | 18519 | |
ecb4347a DJ |
18520 | cur_proc_ptr->frame_reg = tc_get_register (1); |
18521 | ||
18522 | SKIP_WHITESPACE (); | |
18523 | if (*input_line_pointer++ != ',' | |
18524 | || get_absolute_expression_and_terminator (&val) != ',') | |
18525 | { | |
1661c76c | 18526 | as_warn (_("bad .frame directive")); |
ecb4347a DJ |
18527 | --input_line_pointer; |
18528 | demand_empty_rest_of_line (); | |
18529 | return; | |
18530 | } | |
252b5132 | 18531 | |
ecb4347a DJ |
18532 | cur_proc_ptr->frame_offset = val; |
18533 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 18534 | |
252b5132 | 18535 | demand_empty_rest_of_line (); |
252b5132 | 18536 | } |
252b5132 RH |
18537 | } |
18538 | ||
bdaaa2e1 KH |
18539 | /* The .fmask and .mask directives. If the mdebug section is present |
18540 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 18541 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 18542 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
18543 | make reference to the ecoff symbol table (in the mdebug section). */ |
18544 | ||
18545 | static void | |
17a2f251 | 18546 | s_mips_mask (int reg_type) |
252b5132 | 18547 | { |
f3ded42a RS |
18548 | if (ECOFF_DEBUGGING) |
18549 | s_ignore (reg_type); | |
18550 | else | |
252b5132 | 18551 | { |
ecb4347a | 18552 | long mask, off; |
252b5132 | 18553 | |
ecb4347a DJ |
18554 | if (cur_proc_ptr == (procS *) NULL) |
18555 | { | |
18556 | as_warn (_(".mask/.fmask outside of .ent")); | |
18557 | demand_empty_rest_of_line (); | |
18558 | return; | |
18559 | } | |
252b5132 | 18560 | |
ecb4347a DJ |
18561 | if (get_absolute_expression_and_terminator (&mask) != ',') |
18562 | { | |
1661c76c | 18563 | as_warn (_("bad .mask/.fmask directive")); |
ecb4347a DJ |
18564 | --input_line_pointer; |
18565 | demand_empty_rest_of_line (); | |
18566 | return; | |
18567 | } | |
252b5132 | 18568 | |
ecb4347a DJ |
18569 | off = get_absolute_expression (); |
18570 | ||
18571 | if (reg_type == 'F') | |
18572 | { | |
18573 | cur_proc_ptr->fpreg_mask = mask; | |
18574 | cur_proc_ptr->fpreg_offset = off; | |
18575 | } | |
18576 | else | |
18577 | { | |
18578 | cur_proc_ptr->reg_mask = mask; | |
18579 | cur_proc_ptr->reg_offset = off; | |
18580 | } | |
18581 | ||
18582 | demand_empty_rest_of_line (); | |
252b5132 | 18583 | } |
252b5132 RH |
18584 | } |
18585 | ||
316f5878 RS |
18586 | /* A table describing all the processors gas knows about. Names are |
18587 | matched in the order listed. | |
e7af610e | 18588 | |
316f5878 RS |
18589 | To ease comparison, please keep this table in the same order as |
18590 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
18591 | static const struct mips_cpu_info mips_cpu_info_table[] = |
18592 | { | |
316f5878 | 18593 | /* Entries for generic ISAs */ |
d16afab6 RS |
18594 | { "mips1", MIPS_CPU_IS_ISA, 0, ISA_MIPS1, CPU_R3000 }, |
18595 | { "mips2", MIPS_CPU_IS_ISA, 0, ISA_MIPS2, CPU_R6000 }, | |
18596 | { "mips3", MIPS_CPU_IS_ISA, 0, ISA_MIPS3, CPU_R4000 }, | |
18597 | { "mips4", MIPS_CPU_IS_ISA, 0, ISA_MIPS4, CPU_R8000 }, | |
18598 | { "mips5", MIPS_CPU_IS_ISA, 0, ISA_MIPS5, CPU_MIPS5 }, | |
18599 | { "mips32", MIPS_CPU_IS_ISA, 0, ISA_MIPS32, CPU_MIPS32 }, | |
18600 | { "mips32r2", MIPS_CPU_IS_ISA, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ae52f483 AB |
18601 | { "mips32r3", MIPS_CPU_IS_ISA, 0, ISA_MIPS32R3, CPU_MIPS32R3 }, |
18602 | { "mips32r5", MIPS_CPU_IS_ISA, 0, ISA_MIPS32R5, CPU_MIPS32R5 }, | |
7361da2c | 18603 | { "mips32r6", MIPS_CPU_IS_ISA, 0, ISA_MIPS32R6, CPU_MIPS32R6 }, |
d16afab6 RS |
18604 | { "mips64", MIPS_CPU_IS_ISA, 0, ISA_MIPS64, CPU_MIPS64 }, |
18605 | { "mips64r2", MIPS_CPU_IS_ISA, 0, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
ae52f483 AB |
18606 | { "mips64r3", MIPS_CPU_IS_ISA, 0, ISA_MIPS64R3, CPU_MIPS64R3 }, |
18607 | { "mips64r5", MIPS_CPU_IS_ISA, 0, ISA_MIPS64R5, CPU_MIPS64R5 }, | |
7361da2c | 18608 | { "mips64r6", MIPS_CPU_IS_ISA, 0, ISA_MIPS64R6, CPU_MIPS64R6 }, |
316f5878 RS |
18609 | |
18610 | /* MIPS I */ | |
d16afab6 RS |
18611 | { "r3000", 0, 0, ISA_MIPS1, CPU_R3000 }, |
18612 | { "r2000", 0, 0, ISA_MIPS1, CPU_R3000 }, | |
18613 | { "r3900", 0, 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
18614 | |
18615 | /* MIPS II */ | |
d16afab6 | 18616 | { "r6000", 0, 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
18617 | |
18618 | /* MIPS III */ | |
d16afab6 RS |
18619 | { "r4000", 0, 0, ISA_MIPS3, CPU_R4000 }, |
18620 | { "r4010", 0, 0, ISA_MIPS2, CPU_R4010 }, | |
18621 | { "vr4100", 0, 0, ISA_MIPS3, CPU_VR4100 }, | |
18622 | { "vr4111", 0, 0, ISA_MIPS3, CPU_R4111 }, | |
18623 | { "vr4120", 0, 0, ISA_MIPS3, CPU_VR4120 }, | |
18624 | { "vr4130", 0, 0, ISA_MIPS3, CPU_VR4120 }, | |
18625 | { "vr4181", 0, 0, ISA_MIPS3, CPU_R4111 }, | |
18626 | { "vr4300", 0, 0, ISA_MIPS3, CPU_R4300 }, | |
18627 | { "r4400", 0, 0, ISA_MIPS3, CPU_R4400 }, | |
18628 | { "r4600", 0, 0, ISA_MIPS3, CPU_R4600 }, | |
18629 | { "orion", 0, 0, ISA_MIPS3, CPU_R4600 }, | |
18630 | { "r4650", 0, 0, ISA_MIPS3, CPU_R4650 }, | |
18631 | { "r5900", 0, 0, ISA_MIPS3, CPU_R5900 }, | |
b15591bb | 18632 | /* ST Microelectronics Loongson 2E and 2F cores */ |
d16afab6 RS |
18633 | { "loongson2e", 0, 0, ISA_MIPS3, CPU_LOONGSON_2E }, |
18634 | { "loongson2f", 0, 0, ISA_MIPS3, CPU_LOONGSON_2F }, | |
316f5878 RS |
18635 | |
18636 | /* MIPS IV */ | |
d16afab6 RS |
18637 | { "r8000", 0, 0, ISA_MIPS4, CPU_R8000 }, |
18638 | { "r10000", 0, 0, ISA_MIPS4, CPU_R10000 }, | |
18639 | { "r12000", 0, 0, ISA_MIPS4, CPU_R12000 }, | |
18640 | { "r14000", 0, 0, ISA_MIPS4, CPU_R14000 }, | |
18641 | { "r16000", 0, 0, ISA_MIPS4, CPU_R16000 }, | |
18642 | { "vr5000", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
18643 | { "vr5400", 0, 0, ISA_MIPS4, CPU_VR5400 }, | |
18644 | { "vr5500", 0, 0, ISA_MIPS4, CPU_VR5500 }, | |
18645 | { "rm5200", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
18646 | { "rm5230", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
18647 | { "rm5231", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
18648 | { "rm5261", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
18649 | { "rm5721", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
18650 | { "rm7000", 0, 0, ISA_MIPS4, CPU_RM7000 }, | |
18651 | { "rm9000", 0, 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
18652 | |
18653 | /* MIPS 32 */ | |
d16afab6 RS |
18654 | { "4kc", 0, 0, ISA_MIPS32, CPU_MIPS32 }, |
18655 | { "4km", 0, 0, ISA_MIPS32, CPU_MIPS32 }, | |
18656 | { "4kp", 0, 0, ISA_MIPS32, CPU_MIPS32 }, | |
18657 | { "4ksc", 0, ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
ad3fea08 TS |
18658 | |
18659 | /* MIPS 32 Release 2 */ | |
d16afab6 RS |
18660 | { "4kec", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18661 | { "4kem", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18662 | { "4kep", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18663 | { "4ksd", 0, ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18664 | { "m4k", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18665 | { "m4kp", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18666 | { "m14k", 0, ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18667 | { "m14kc", 0, ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18668 | { "m14ke", 0, ASE_DSP | ASE_DSPR2 | ASE_MCU, | |
18669 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18670 | { "m14kec", 0, ASE_DSP | ASE_DSPR2 | ASE_MCU, | |
18671 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18672 | { "24kc", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18673 | { "24kf2_1", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18674 | { "24kf", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18675 | { "24kf1_1", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 18676 | /* Deprecated forms of the above. */ |
d16afab6 RS |
18677 | { "24kfx", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18678 | { "24kx", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f | 18679 | /* 24KE is a 24K with DSP ASE, other ASEs are optional. */ |
d16afab6 RS |
18680 | { "24kec", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18681 | { "24kef2_1", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18682 | { "24kef", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18683 | { "24kef1_1", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 18684 | /* Deprecated forms of the above. */ |
d16afab6 RS |
18685 | { "24kefx", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18686 | { "24kex", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f | 18687 | /* 34K is a 24K with DSP and MT ASE, other ASEs are optional. */ |
d16afab6 RS |
18688 | { "34kc", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18689 | { "34kf2_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18690 | { "34kf", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18691 | { "34kf1_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 18692 | /* Deprecated forms of the above. */ |
d16afab6 RS |
18693 | { "34kfx", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18694 | { "34kx", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
711eefe4 | 18695 | /* 34Kn is a 34kc without DSP. */ |
d16afab6 | 18696 | { "34kn", 0, ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 18697 | /* 74K with DSP and DSPR2 ASE, other ASEs are optional. */ |
d16afab6 RS |
18698 | { "74kc", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18699 | { "74kf2_1", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18700 | { "74kf", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18701 | { "74kf1_1", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18702 | { "74kf3_2", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 18703 | /* Deprecated forms of the above. */ |
d16afab6 RS |
18704 | { "74kfx", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18705 | { "74kx", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
30f8113a | 18706 | /* 1004K cores are multiprocessor versions of the 34K. */ |
d16afab6 RS |
18707 | { "1004kc", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18708 | { "1004kf2_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18709 | { "1004kf", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18710 | { "1004kf1_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
77403ce9 RS |
18711 | /* interaptiv is the new name for 1004kf */ |
18712 | { "interaptiv", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
c6e5c03a RS |
18713 | /* M5100 family */ |
18714 | { "m5100", 0, ASE_MCU, ISA_MIPS32R5, CPU_MIPS32R5 }, | |
18715 | { "m5101", 0, ASE_MCU, ISA_MIPS32R5, CPU_MIPS32R5 }, | |
bbaa46c0 | 18716 | /* P5600 with EVA and Virtualization ASEs, other ASEs are optional. */ |
ae52f483 | 18717 | { "p5600", 0, ASE_VIRT | ASE_EVA | ASE_XPA, ISA_MIPS32R5, CPU_MIPS32R5 }, |
32b26a03 | 18718 | |
316f5878 | 18719 | /* MIPS 64 */ |
d16afab6 RS |
18720 | { "5kc", 0, 0, ISA_MIPS64, CPU_MIPS64 }, |
18721 | { "5kf", 0, 0, ISA_MIPS64, CPU_MIPS64 }, | |
18722 | { "20kc", 0, ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
18723 | { "25kf", 0, ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
ad3fea08 | 18724 | |
c7a23324 | 18725 | /* Broadcom SB-1 CPU core */ |
d16afab6 | 18726 | { "sb1", 0, ASE_MIPS3D | ASE_MDMX, ISA_MIPS64, CPU_SB1 }, |
1e85aad8 | 18727 | /* Broadcom SB-1A CPU core */ |
d16afab6 | 18728 | { "sb1a", 0, ASE_MIPS3D | ASE_MDMX, ISA_MIPS64, CPU_SB1 }, |
3739860c | 18729 | |
4ba154f5 | 18730 | { "loongson3a", 0, 0, ISA_MIPS64R2, CPU_LOONGSON_3A }, |
e7af610e | 18731 | |
ed163775 MR |
18732 | /* MIPS 64 Release 2 */ |
18733 | ||
967344c6 | 18734 | /* Cavium Networks Octeon CPU core */ |
d16afab6 RS |
18735 | { "octeon", 0, 0, ISA_MIPS64R2, CPU_OCTEON }, |
18736 | { "octeon+", 0, 0, ISA_MIPS64R2, CPU_OCTEONP }, | |
18737 | { "octeon2", 0, 0, ISA_MIPS64R2, CPU_OCTEON2 }, | |
2c629856 | 18738 | { "octeon3", 0, ASE_VIRT | ASE_VIRT64, ISA_MIPS64R5, CPU_OCTEON3 }, |
967344c6 | 18739 | |
52b6b6b9 | 18740 | /* RMI Xlr */ |
d16afab6 | 18741 | { "xlr", 0, 0, ISA_MIPS64, CPU_XLR }, |
52b6b6b9 | 18742 | |
55a36193 MK |
18743 | /* Broadcom XLP. |
18744 | XLP is mostly like XLR, with the prominent exception that it is | |
18745 | MIPS64R2 rather than MIPS64. */ | |
d16afab6 | 18746 | { "xlp", 0, 0, ISA_MIPS64R2, CPU_XLR }, |
55a36193 | 18747 | |
7ef0d297 AB |
18748 | /* i6400. */ |
18749 | { "i6400", 0, ASE_MSA, ISA_MIPS64R6, CPU_MIPS64R6}, | |
18750 | ||
316f5878 | 18751 | /* End marker */ |
d16afab6 | 18752 | { NULL, 0, 0, 0, 0 } |
316f5878 | 18753 | }; |
e7af610e | 18754 | |
84ea6cf2 | 18755 | |
316f5878 RS |
18756 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
18757 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 18758 | |
316f5878 | 18759 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 18760 | |
b34976b6 | 18761 | static bfd_boolean |
17a2f251 | 18762 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
18763 | { |
18764 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
18765 | given++, canonical++; | |
18766 | ||
18767 | return ((*given == 0 && *canonical == 0) | |
18768 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
18769 | } | |
18770 | ||
18771 | ||
18772 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
18773 | CPU name. We've traditionally allowed a lot of variation here. | |
18774 | ||
18775 | Note: this function is shared between GCC and GAS. */ | |
18776 | ||
b34976b6 | 18777 | static bfd_boolean |
17a2f251 | 18778 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
18779 | { |
18780 | /* First see if the name matches exactly, or with a final "000" | |
18781 | turned into "k". */ | |
18782 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 18783 | return TRUE; |
316f5878 RS |
18784 | |
18785 | /* If not, try comparing based on numerical designation alone. | |
18786 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
18787 | if (TOLOWER (*given) == 'r') | |
18788 | given++; | |
18789 | if (!ISDIGIT (*given)) | |
b34976b6 | 18790 | return FALSE; |
316f5878 RS |
18791 | |
18792 | /* Skip over some well-known prefixes in the canonical name, | |
18793 | hoping to find a number there too. */ | |
18794 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
18795 | canonical += 2; | |
18796 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
18797 | canonical += 2; | |
18798 | else if (TOLOWER (canonical[0]) == 'r') | |
18799 | canonical += 1; | |
18800 | ||
18801 | return mips_strict_matching_cpu_name_p (canonical, given); | |
18802 | } | |
18803 | ||
18804 | ||
18805 | /* Parse an option that takes the name of a processor as its argument. | |
18806 | OPTION is the name of the option and CPU_STRING is the argument. | |
18807 | Return the corresponding processor enumeration if the CPU_STRING is | |
18808 | recognized, otherwise report an error and return null. | |
18809 | ||
18810 | A similar function exists in GCC. */ | |
e7af610e NC |
18811 | |
18812 | static const struct mips_cpu_info * | |
17a2f251 | 18813 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 18814 | { |
316f5878 | 18815 | const struct mips_cpu_info *p; |
e7af610e | 18816 | |
316f5878 RS |
18817 | /* 'from-abi' selects the most compatible architecture for the given |
18818 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
18819 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
18820 | version. Look first at the -mgp options, if given, otherwise base | |
18821 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 18822 | |
316f5878 RS |
18823 | Treat NO_ABI like the EABIs. One reason to do this is that the |
18824 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
18825 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
18826 | 'mips64', just as we did in the days before 'from-abi'. */ | |
18827 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
18828 | { | |
18829 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
18830 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
18831 | ||
18832 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
18833 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
18834 | ||
bad1aba3 | 18835 | if (file_mips_opts.gp >= 0) |
18836 | return mips_cpu_info_from_isa (file_mips_opts.gp == 32 | |
0b35dfee | 18837 | ? ISA_MIPS1 : ISA_MIPS3); |
316f5878 RS |
18838 | |
18839 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
18840 | ? ISA_MIPS3 | |
18841 | : ISA_MIPS1); | |
18842 | } | |
18843 | ||
18844 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
18845 | if (strcasecmp (cpu_string, "default") == 0) | |
18846 | return 0; | |
18847 | ||
18848 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
18849 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
18850 | return p; | |
18851 | ||
1661c76c | 18852 | as_bad (_("bad value (%s) for %s"), cpu_string, option); |
316f5878 | 18853 | return 0; |
e7af610e NC |
18854 | } |
18855 | ||
316f5878 RS |
18856 | /* Return the canonical processor information for ISA (a member of the |
18857 | ISA_MIPS* enumeration). */ | |
18858 | ||
e7af610e | 18859 | static const struct mips_cpu_info * |
17a2f251 | 18860 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
18861 | { |
18862 | int i; | |
18863 | ||
18864 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 18865 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 18866 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
18867 | return (&mips_cpu_info_table[i]); |
18868 | ||
e972090a | 18869 | return NULL; |
e7af610e | 18870 | } |
fef14a42 TS |
18871 | |
18872 | static const struct mips_cpu_info * | |
17a2f251 | 18873 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
18874 | { |
18875 | int i; | |
18876 | ||
18877 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
18878 | if (arch == mips_cpu_info_table[i].cpu) | |
18879 | return (&mips_cpu_info_table[i]); | |
18880 | ||
18881 | return NULL; | |
18882 | } | |
316f5878 RS |
18883 | \f |
18884 | static void | |
17a2f251 | 18885 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
18886 | { |
18887 | if (*first_p) | |
18888 | { | |
18889 | fprintf (stream, "%24s", ""); | |
18890 | *col_p = 24; | |
18891 | } | |
18892 | else | |
18893 | { | |
18894 | fprintf (stream, ", "); | |
18895 | *col_p += 2; | |
18896 | } | |
e7af610e | 18897 | |
316f5878 RS |
18898 | if (*col_p + strlen (string) > 72) |
18899 | { | |
18900 | fprintf (stream, "\n%24s", ""); | |
18901 | *col_p = 24; | |
18902 | } | |
18903 | ||
18904 | fprintf (stream, "%s", string); | |
18905 | *col_p += strlen (string); | |
18906 | ||
18907 | *first_p = 0; | |
18908 | } | |
18909 | ||
18910 | void | |
17a2f251 | 18911 | md_show_usage (FILE *stream) |
e7af610e | 18912 | { |
316f5878 RS |
18913 | int column, first; |
18914 | size_t i; | |
18915 | ||
18916 | fprintf (stream, _("\ | |
18917 | MIPS options:\n\ | |
316f5878 RS |
18918 | -EB generate big endian output\n\ |
18919 | -EL generate little endian output\n\ | |
18920 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
18921 | -G NUM allow referencing objects up to NUM bytes\n\ | |
18922 | implicitly with the gp register [default 8]\n")); | |
18923 | fprintf (stream, _("\ | |
18924 | -mips1 generate MIPS ISA I instructions\n\ | |
18925 | -mips2 generate MIPS ISA II instructions\n\ | |
18926 | -mips3 generate MIPS ISA III instructions\n\ | |
18927 | -mips4 generate MIPS ISA IV instructions\n\ | |
18928 | -mips5 generate MIPS ISA V instructions\n\ | |
18929 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 18930 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
ae52f483 AB |
18931 | -mips32r3 generate MIPS32 release 3 ISA instructions\n\ |
18932 | -mips32r5 generate MIPS32 release 5 ISA instructions\n\ | |
7361da2c | 18933 | -mips32r6 generate MIPS32 release 6 ISA instructions\n\ |
316f5878 | 18934 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 18935 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
ae52f483 AB |
18936 | -mips64r3 generate MIPS64 release 3 ISA instructions\n\ |
18937 | -mips64r5 generate MIPS64 release 5 ISA instructions\n\ | |
7361da2c | 18938 | -mips64r6 generate MIPS64 release 6 ISA instructions\n\ |
316f5878 RS |
18939 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
18940 | ||
18941 | first = 1; | |
e7af610e NC |
18942 | |
18943 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
18944 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
18945 | show (stream, "from-abi", &column, &first); | |
18946 | fputc ('\n', stream); | |
e7af610e | 18947 | |
316f5878 RS |
18948 | fprintf (stream, _("\ |
18949 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
18950 | -no-mCPU don't generate code specific to CPU.\n\ | |
18951 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
18952 | ||
18953 | first = 1; | |
18954 | ||
18955 | show (stream, "3900", &column, &first); | |
18956 | show (stream, "4010", &column, &first); | |
18957 | show (stream, "4100", &column, &first); | |
18958 | show (stream, "4650", &column, &first); | |
18959 | fputc ('\n', stream); | |
18960 | ||
18961 | fprintf (stream, _("\ | |
18962 | -mips16 generate mips16 instructions\n\ | |
18963 | -no-mips16 do not generate mips16 instructions\n")); | |
18964 | fprintf (stream, _("\ | |
df58fc94 RS |
18965 | -mmicromips generate microMIPS instructions\n\ |
18966 | -mno-micromips do not generate microMIPS instructions\n")); | |
18967 | fprintf (stream, _("\ | |
e16bfa71 | 18968 | -msmartmips generate smartmips instructions\n\ |
3739860c | 18969 | -mno-smartmips do not generate smartmips instructions\n")); |
e16bfa71 | 18970 | fprintf (stream, _("\ |
74cd071d CF |
18971 | -mdsp generate DSP instructions\n\ |
18972 | -mno-dsp do not generate DSP instructions\n")); | |
18973 | fprintf (stream, _("\ | |
8b082fb1 TS |
18974 | -mdspr2 generate DSP R2 instructions\n\ |
18975 | -mno-dspr2 do not generate DSP R2 instructions\n")); | |
18976 | fprintf (stream, _("\ | |
8f4f9071 MF |
18977 | -mdspr3 generate DSP R3 instructions\n\ |
18978 | -mno-dspr3 do not generate DSP R3 instructions\n")); | |
18979 | fprintf (stream, _("\ | |
ef2e4d86 CF |
18980 | -mmt generate MT instructions\n\ |
18981 | -mno-mt do not generate MT instructions\n")); | |
18982 | fprintf (stream, _("\ | |
dec0624d MR |
18983 | -mmcu generate MCU instructions\n\ |
18984 | -mno-mcu do not generate MCU instructions\n")); | |
18985 | fprintf (stream, _("\ | |
56d438b1 CF |
18986 | -mmsa generate MSA instructions\n\ |
18987 | -mno-msa do not generate MSA instructions\n")); | |
18988 | fprintf (stream, _("\ | |
7d64c587 AB |
18989 | -mxpa generate eXtended Physical Address (XPA) instructions\n\ |
18990 | -mno-xpa do not generate eXtended Physical Address (XPA) instructions\n")); | |
18991 | fprintf (stream, _("\ | |
b015e599 AP |
18992 | -mvirt generate Virtualization instructions\n\ |
18993 | -mno-virt do not generate Virtualization instructions\n")); | |
18994 | fprintf (stream, _("\ | |
833794fc MR |
18995 | -minsn32 only generate 32-bit microMIPS instructions\n\ |
18996 | -mno-insn32 generate all microMIPS instructions\n")); | |
18997 | fprintf (stream, _("\ | |
c67a084a NC |
18998 | -mfix-loongson2f-jump work around Loongson2F JUMP instructions\n\ |
18999 | -mfix-loongson2f-nop work around Loongson2F NOP errata\n\ | |
d766e8ec | 19000 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 19001 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
6a32d874 | 19002 | -mfix-24k insert a nop after ERET and DERET instructions\n\ |
d954098f | 19003 | -mfix-cn63xxp1 work around CN63XXP1 PREF errata\n\ |
316f5878 RS |
19004 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
19005 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 | 19006 | -msym32 assume all symbols have 32-bit values\n\ |
316f5878 RS |
19007 | -O0 remove unneeded NOPs, do not swap branches\n\ |
19008 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
19009 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ |
19010 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
037b32b9 AN |
19011 | fprintf (stream, _("\ |
19012 | -mhard-float allow floating-point instructions\n\ | |
19013 | -msoft-float do not allow floating-point instructions\n\ | |
19014 | -msingle-float only allow 32-bit floating-point operations\n\ | |
19015 | -mdouble-float allow 32-bit and 64-bit floating-point operations\n\ | |
3bf0dbfb | 19016 | --[no-]construct-floats [dis]allow floating point values to be constructed\n\ |
ba92f887 MR |
19017 | --[no-]relax-branch [dis]allow out-of-range branches to be relaxed\n\ |
19018 | -mnan=ENCODING select an IEEE 754 NaN encoding convention, either of:\n")); | |
19019 | ||
19020 | first = 1; | |
19021 | ||
19022 | show (stream, "legacy", &column, &first); | |
19023 | show (stream, "2008", &column, &first); | |
19024 | ||
19025 | fputc ('\n', stream); | |
19026 | ||
316f5878 RS |
19027 | fprintf (stream, _("\ |
19028 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
861fb55a | 19029 | -call_nonpic generate non-PIC code that can operate with DSOs\n\ |
0c000745 | 19030 | -mvxworks-pic generate VxWorks position independent code\n\ |
861fb55a | 19031 | -non_shared do not generate code that can operate with DSOs\n\ |
316f5878 | 19032 | -xgot assume a 32 bit GOT\n\ |
dcd410fe | 19033 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 | 19034 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
d821e36b | 19035 | position dependent (non shared) code\n\ |
316f5878 RS |
19036 | -mabi=ABI create ABI conformant object file for:\n")); |
19037 | ||
19038 | first = 1; | |
19039 | ||
19040 | show (stream, "32", &column, &first); | |
19041 | show (stream, "o64", &column, &first); | |
19042 | show (stream, "n32", &column, &first); | |
19043 | show (stream, "64", &column, &first); | |
19044 | show (stream, "eabi", &column, &first); | |
19045 | ||
19046 | fputc ('\n', stream); | |
19047 | ||
19048 | fprintf (stream, _("\ | |
19049 | -32 create o32 ABI object file (default)\n\ | |
19050 | -n32 create n32 ABI object file\n\ | |
19051 | -64 create 64 ABI object file\n")); | |
e7af610e | 19052 | } |
14e777e0 | 19053 | |
1575952e | 19054 | #ifdef TE_IRIX |
14e777e0 | 19055 | enum dwarf2_format |
413a266c | 19056 | mips_dwarf2_format (asection *sec ATTRIBUTE_UNUSED) |
14e777e0 | 19057 | { |
369943fe | 19058 | if (HAVE_64BIT_SYMBOLS) |
1575952e | 19059 | return dwarf2_format_64bit_irix; |
14e777e0 KB |
19060 | else |
19061 | return dwarf2_format_32bit; | |
19062 | } | |
1575952e | 19063 | #endif |
73369e65 EC |
19064 | |
19065 | int | |
19066 | mips_dwarf2_addr_size (void) | |
19067 | { | |
6b6b3450 | 19068 | if (HAVE_64BIT_OBJECTS) |
73369e65 | 19069 | return 8; |
73369e65 EC |
19070 | else |
19071 | return 4; | |
19072 | } | |
5862107c EC |
19073 | |
19074 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
19075 | void | |
19076 | mips_cfi_frame_initial_instructions (void) | |
19077 | { | |
19078 | cfi_add_CFA_def_cfa_register (SP); | |
19079 | } | |
19080 | ||
707bfff6 TS |
19081 | int |
19082 | tc_mips_regname_to_dw2regnum (char *regname) | |
19083 | { | |
19084 | unsigned int regnum = -1; | |
19085 | unsigned int reg; | |
19086 | ||
19087 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
19088 | regnum = reg; | |
19089 | ||
19090 | return regnum; | |
19091 | } | |
263b2574 | 19092 | |
19093 | /* Implement CONVERT_SYMBOLIC_ATTRIBUTE. | |
19094 | Given a symbolic attribute NAME, return the proper integer value. | |
19095 | Returns -1 if the attribute is not known. */ | |
19096 | ||
19097 | int | |
19098 | mips_convert_symbolic_attribute (const char *name) | |
19099 | { | |
19100 | static const struct | |
19101 | { | |
19102 | const char * name; | |
19103 | const int tag; | |
19104 | } | |
19105 | attribute_table[] = | |
19106 | { | |
19107 | #define T(tag) {#tag, tag} | |
19108 | T (Tag_GNU_MIPS_ABI_FP), | |
19109 | T (Tag_GNU_MIPS_ABI_MSA), | |
19110 | #undef T | |
19111 | }; | |
19112 | unsigned int i; | |
19113 | ||
19114 | if (name == NULL) | |
19115 | return -1; | |
19116 | ||
19117 | for (i = 0; i < ARRAY_SIZE (attribute_table); i++) | |
19118 | if (streq (name, attribute_table[i].name)) | |
19119 | return attribute_table[i].tag; | |
19120 | ||
19121 | return -1; | |
19122 | } | |
fd5c94ab RS |
19123 | |
19124 | void | |
19125 | md_mips_end (void) | |
19126 | { | |
351cdf24 MF |
19127 | int fpabi = Val_GNU_MIPS_ABI_FP_ANY; |
19128 | ||
fd5c94ab RS |
19129 | mips_emit_delays (); |
19130 | if (cur_proc_ptr) | |
19131 | as_warn (_("missing .end at end of assembly")); | |
919731af | 19132 | |
19133 | /* Just in case no code was emitted, do the consistency check. */ | |
19134 | file_mips_check_options (); | |
351cdf24 MF |
19135 | |
19136 | /* Set a floating-point ABI if the user did not. */ | |
19137 | if (obj_elf_seen_attribute (OBJ_ATTR_GNU, Tag_GNU_MIPS_ABI_FP)) | |
19138 | { | |
19139 | /* Perform consistency checks on the floating-point ABI. */ | |
19140 | fpabi = bfd_elf_get_obj_attr_int (stdoutput, OBJ_ATTR_GNU, | |
19141 | Tag_GNU_MIPS_ABI_FP); | |
19142 | if (fpabi != Val_GNU_MIPS_ABI_FP_ANY) | |
19143 | check_fpabi (fpabi); | |
19144 | } | |
19145 | else | |
19146 | { | |
19147 | /* Soft-float gets precedence over single-float, the two options should | |
19148 | not be used together so this should not matter. */ | |
19149 | if (file_mips_opts.soft_float == 1) | |
19150 | fpabi = Val_GNU_MIPS_ABI_FP_SOFT; | |
19151 | /* Single-float gets precedence over all double_float cases. */ | |
19152 | else if (file_mips_opts.single_float == 1) | |
19153 | fpabi = Val_GNU_MIPS_ABI_FP_SINGLE; | |
19154 | else | |
19155 | { | |
19156 | switch (file_mips_opts.fp) | |
19157 | { | |
19158 | case 32: | |
19159 | if (file_mips_opts.gp == 32) | |
19160 | fpabi = Val_GNU_MIPS_ABI_FP_DOUBLE; | |
19161 | break; | |
19162 | case 0: | |
19163 | fpabi = Val_GNU_MIPS_ABI_FP_XX; | |
19164 | break; | |
19165 | case 64: | |
19166 | if (file_mips_opts.gp == 32 && !file_mips_opts.oddspreg) | |
19167 | fpabi = Val_GNU_MIPS_ABI_FP_64A; | |
19168 | else if (file_mips_opts.gp == 32) | |
19169 | fpabi = Val_GNU_MIPS_ABI_FP_64; | |
19170 | else | |
19171 | fpabi = Val_GNU_MIPS_ABI_FP_DOUBLE; | |
19172 | break; | |
19173 | } | |
19174 | } | |
19175 | ||
19176 | bfd_elf_add_obj_attr_int (stdoutput, OBJ_ATTR_GNU, | |
19177 | Tag_GNU_MIPS_ABI_FP, fpabi); | |
19178 | } | |
fd5c94ab | 19179 | } |
2f0c68f2 CM |
19180 | |
19181 | /* Returns the relocation type required for a particular CFI encoding. */ | |
19182 | ||
19183 | bfd_reloc_code_real_type | |
19184 | mips_cfi_reloc_for_encoding (int encoding) | |
19185 | { | |
19186 | if (encoding == (DW_EH_PE_sdata4 | DW_EH_PE_pcrel)) | |
19187 | return BFD_RELOC_32_PCREL; | |
19188 | else return BFD_RELOC_NONE; | |
19189 | } |