Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-mips.c -- assemble code for a MIPS chip. |
81912461 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
e407c74b | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
c67a084a | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | Contributed by the OSF and Ralph Campbell. |
6 | Written by Keith Knowles and Ralph Campbell, working independently. | |
7 | Modified for ECOFF and R4000 support by Ian Lance Taylor of Cygnus | |
8 | Support. | |
9 | ||
10 | This file is part of GAS. | |
11 | ||
12 | GAS is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 14 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
15 | any later version. |
16 | ||
17 | GAS is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
24 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
25 | 02110-1301, USA. */ | |
252b5132 RH |
26 | |
27 | #include "as.h" | |
28 | #include "config.h" | |
29 | #include "subsegs.h" | |
3882b010 | 30 | #include "safe-ctype.h" |
252b5132 | 31 | |
252b5132 RH |
32 | #include "opcode/mips.h" |
33 | #include "itbl-ops.h" | |
c5dd6aab | 34 | #include "dwarf2dbg.h" |
5862107c | 35 | #include "dw2gencfi.h" |
252b5132 | 36 | |
42429eac RS |
37 | /* Check assumptions made in this file. */ |
38 | typedef char static_assert1[sizeof (offsetT) < 8 ? -1 : 1]; | |
39 | typedef char static_assert2[sizeof (valueT) < 8 ? -1 : 1]; | |
40 | ||
252b5132 RH |
41 | #ifdef DEBUG |
42 | #define DBG(x) printf x | |
43 | #else | |
44 | #define DBG(x) | |
45 | #endif | |
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; |
252b5132 | 92 | |
85b51719 | 93 | #define ZERO 0 |
741fe287 | 94 | #define ATREG 1 |
df58fc94 RS |
95 | #define S0 16 |
96 | #define S7 23 | |
252b5132 RH |
97 | #define TREG 24 |
98 | #define PIC_CALL_REG 25 | |
99 | #define KT0 26 | |
100 | #define KT1 27 | |
101 | #define GP 28 | |
102 | #define SP 29 | |
103 | #define FP 30 | |
104 | #define RA 31 | |
105 | ||
106 | #define ILLEGAL_REG (32) | |
107 | ||
741fe287 MR |
108 | #define AT mips_opts.at |
109 | ||
252b5132 RH |
110 | extern int target_big_endian; |
111 | ||
252b5132 | 112 | /* The name of the readonly data section. */ |
e8044f35 | 113 | #define RDATA_SECTION_NAME ".rodata" |
252b5132 | 114 | |
a4e06468 RS |
115 | /* Ways in which an instruction can be "appended" to the output. */ |
116 | enum append_method { | |
117 | /* Just add it normally. */ | |
118 | APPEND_ADD, | |
119 | ||
120 | /* Add it normally and then add a nop. */ | |
121 | APPEND_ADD_WITH_NOP, | |
122 | ||
123 | /* Turn an instruction with a delay slot into a "compact" version. */ | |
124 | APPEND_ADD_COMPACT, | |
125 | ||
126 | /* Insert the instruction before the last one. */ | |
127 | APPEND_SWAP | |
128 | }; | |
129 | ||
47e39b9d RS |
130 | /* Information about an instruction, including its format, operands |
131 | and fixups. */ | |
132 | struct mips_cl_insn | |
133 | { | |
134 | /* The opcode's entry in mips_opcodes or mips16_opcodes. */ | |
135 | const struct mips_opcode *insn_mo; | |
136 | ||
47e39b9d | 137 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is |
5c04167a RS |
138 | a copy of INSN_MO->match with the operands filled in. If we have |
139 | decided to use an extended MIPS16 instruction, this includes the | |
140 | extension. */ | |
47e39b9d RS |
141 | unsigned long insn_opcode; |
142 | ||
143 | /* The frag that contains the instruction. */ | |
144 | struct frag *frag; | |
145 | ||
146 | /* The offset into FRAG of the first instruction byte. */ | |
147 | long where; | |
148 | ||
149 | /* The relocs associated with the instruction, if any. */ | |
150 | fixS *fixp[3]; | |
151 | ||
a38419a5 RS |
152 | /* True if this entry cannot be moved from its current position. */ |
153 | unsigned int fixed_p : 1; | |
47e39b9d | 154 | |
708587a4 | 155 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
156 | unsigned int noreorder_p : 1; |
157 | ||
2fa15973 RS |
158 | /* True for mips16 instructions that jump to an absolute address. */ |
159 | unsigned int mips16_absolute_jump_p : 1; | |
15be625d CM |
160 | |
161 | /* True if this instruction is complete. */ | |
162 | unsigned int complete_p : 1; | |
e407c74b NC |
163 | |
164 | /* True if this instruction is cleared from history by unconditional | |
165 | branch. */ | |
166 | unsigned int cleared_p : 1; | |
47e39b9d RS |
167 | }; |
168 | ||
a325df1d TS |
169 | /* The ABI to use. */ |
170 | enum mips_abi_level | |
171 | { | |
172 | NO_ABI = 0, | |
173 | O32_ABI, | |
174 | O64_ABI, | |
175 | N32_ABI, | |
176 | N64_ABI, | |
177 | EABI_ABI | |
178 | }; | |
179 | ||
180 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 181 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 182 | |
143d77c5 EC |
183 | /* Whether or not we have code that can call pic code. */ |
184 | int mips_abicalls = FALSE; | |
185 | ||
aa6975fb ILT |
186 | /* Whether or not we have code which can be put into a shared |
187 | library. */ | |
188 | static bfd_boolean mips_in_shared = TRUE; | |
189 | ||
252b5132 RH |
190 | /* This is the set of options which may be modified by the .set |
191 | pseudo-op. We use a struct so that .set push and .set pop are more | |
192 | reliable. */ | |
193 | ||
e972090a NC |
194 | struct mips_set_options |
195 | { | |
252b5132 RH |
196 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
197 | if it has not been initialized. Changed by `.set mipsN', and the | |
198 | -mipsN command line option, and the default CPU. */ | |
199 | int isa; | |
846ef2d0 RS |
200 | /* Enabled Application Specific Extensions (ASEs). Changed by `.set |
201 | <asename>', by command line options, and based on the default | |
202 | architecture. */ | |
203 | int ase; | |
252b5132 RH |
204 | /* Whether we are assembling for the mips16 processor. 0 if we are |
205 | not, 1 if we are, and -1 if the value has not been initialized. | |
206 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
207 | -nomips16 command line options, and the default CPU. */ | |
208 | int mips16; | |
df58fc94 RS |
209 | /* Whether we are assembling for the mipsMIPS ASE. 0 if we are not, |
210 | 1 if we are, and -1 if the value has not been initialized. Changed | |
211 | by `.set micromips' and `.set nomicromips', and the -mmicromips | |
212 | and -mno-micromips command line options, and the default CPU. */ | |
213 | int micromips; | |
252b5132 RH |
214 | /* Non-zero if we should not reorder instructions. Changed by `.set |
215 | reorder' and `.set noreorder'. */ | |
216 | int noreorder; | |
741fe287 MR |
217 | /* Non-zero if we should not permit the register designated "assembler |
218 | temporary" to be used in instructions. The value is the register | |
219 | number, normally $at ($1). Changed by `.set at=REG', `.set noat' | |
220 | (same as `.set at=$0') and `.set at' (same as `.set at=$1'). */ | |
221 | unsigned int at; | |
252b5132 RH |
222 | /* Non-zero if we should warn when a macro instruction expands into |
223 | more than one machine instruction. Changed by `.set nomacro' and | |
224 | `.set macro'. */ | |
225 | int warn_about_macros; | |
226 | /* Non-zero if we should not move instructions. Changed by `.set | |
227 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
228 | int nomove; | |
229 | /* Non-zero if we should not optimize branches by moving the target | |
230 | of the branch into the delay slot. Actually, we don't perform | |
231 | this optimization anyhow. Changed by `.set bopt' and `.set | |
232 | nobopt'. */ | |
233 | int nobopt; | |
234 | /* Non-zero if we should not autoextend mips16 instructions. | |
235 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
236 | int noautoextend; | |
833794fc MR |
237 | /* True if we should only emit 32-bit microMIPS instructions. |
238 | Changed by `.set insn32' and `.set noinsn32', and the -minsn32 | |
239 | and -mno-insn32 command line options. */ | |
240 | bfd_boolean insn32; | |
a325df1d TS |
241 | /* Restrict general purpose registers and floating point registers |
242 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
243 | is passed but can changed if the assembler code uses .set mipsN. */ | |
244 | int gp32; | |
245 | int fp32; | |
fef14a42 TS |
246 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
247 | command line option, and the default CPU. */ | |
248 | int arch; | |
aed1a261 RS |
249 | /* True if ".set sym32" is in effect. */ |
250 | bfd_boolean sym32; | |
037b32b9 AN |
251 | /* True if floating-point operations are not allowed. Changed by .set |
252 | softfloat or .set hardfloat, by command line options -msoft-float or | |
253 | -mhard-float. The default is false. */ | |
254 | bfd_boolean soft_float; | |
255 | ||
256 | /* True if only single-precision floating-point operations are allowed. | |
257 | Changed by .set singlefloat or .set doublefloat, command-line options | |
258 | -msingle-float or -mdouble-float. The default is false. */ | |
259 | bfd_boolean single_float; | |
252b5132 RH |
260 | }; |
261 | ||
037b32b9 AN |
262 | /* This is the struct we use to hold the current set of options. Note |
263 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to | |
264 | -1 to indicate that they have not been initialized. */ | |
265 | ||
a325df1d | 266 | /* True if -mgp32 was passed. */ |
a8e8e863 | 267 | static int file_mips_gp32 = -1; |
a325df1d TS |
268 | |
269 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 270 | static int file_mips_fp32 = -1; |
a325df1d | 271 | |
037b32b9 AN |
272 | /* 1 if -msoft-float, 0 if -mhard-float. The default is 0. */ |
273 | static int file_mips_soft_float = 0; | |
274 | ||
275 | /* 1 if -msingle-float, 0 if -mdouble-float. The default is 0. */ | |
276 | static int file_mips_single_float = 0; | |
252b5132 | 277 | |
ba92f887 MR |
278 | /* True if -mnan=2008, false if -mnan=legacy. */ |
279 | static bfd_boolean mips_flag_nan2008 = FALSE; | |
280 | ||
e972090a NC |
281 | static struct mips_set_options mips_opts = |
282 | { | |
846ef2d0 | 283 | /* isa */ ISA_UNKNOWN, /* ase */ 0, /* mips16 */ -1, /* micromips */ -1, |
b015e599 | 284 | /* noreorder */ 0, /* at */ ATREG, /* warn_about_macros */ 0, |
833794fc MR |
285 | /* nomove */ 0, /* nobopt */ 0, /* noautoextend */ 0, /* insn32 */ FALSE, |
286 | /* gp32 */ 0, /* fp32 */ 0, /* arch */ CPU_UNKNOWN, /* sym32 */ FALSE, | |
b015e599 | 287 | /* soft_float */ FALSE, /* single_float */ FALSE |
e7af610e | 288 | }; |
252b5132 | 289 | |
846ef2d0 RS |
290 | /* The set of ASEs that were selected on the command line, either |
291 | explicitly via ASE options or implicitly through things like -march. */ | |
292 | static unsigned int file_ase; | |
293 | ||
294 | /* Which bits of file_ase were explicitly set or cleared by ASE options. */ | |
295 | static unsigned int file_ase_explicit; | |
296 | ||
252b5132 RH |
297 | /* These variables are filled in with the masks of registers used. |
298 | The object format code reads them and puts them in the appropriate | |
299 | place. */ | |
300 | unsigned long mips_gprmask; | |
301 | unsigned long mips_cprmask[4]; | |
302 | ||
303 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 304 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 305 | |
738f4d98 | 306 | /* True if any MIPS16 code was produced. */ |
a4672219 TS |
307 | static int file_ase_mips16; |
308 | ||
3994f87e TS |
309 | #define ISA_SUPPORTS_MIPS16E (mips_opts.isa == ISA_MIPS32 \ |
310 | || mips_opts.isa == ISA_MIPS32R2 \ | |
311 | || mips_opts.isa == ISA_MIPS64 \ | |
312 | || mips_opts.isa == ISA_MIPS64R2) | |
313 | ||
df58fc94 RS |
314 | /* True if any microMIPS code was produced. */ |
315 | static int file_ase_micromips; | |
316 | ||
b12dd2e4 CF |
317 | /* True if we want to create R_MIPS_JALR for jalr $25. */ |
318 | #ifdef TE_IRIX | |
1180b5a4 | 319 | #define MIPS_JALR_HINT_P(EXPR) HAVE_NEWABI |
b12dd2e4 | 320 | #else |
1180b5a4 RS |
321 | /* As a GNU extension, we use R_MIPS_JALR for o32 too. However, |
322 | because there's no place for any addend, the only acceptable | |
323 | expression is a bare symbol. */ | |
324 | #define MIPS_JALR_HINT_P(EXPR) \ | |
325 | (!HAVE_IN_PLACE_ADDENDS \ | |
326 | || ((EXPR)->X_op == O_symbol && (EXPR)->X_add_number == 0)) | |
b12dd2e4 CF |
327 | #endif |
328 | ||
ec68c924 | 329 | /* The argument of the -march= flag. The architecture we are assembling. */ |
fef14a42 | 330 | static int file_mips_arch = CPU_UNKNOWN; |
316f5878 | 331 | static const char *mips_arch_string; |
ec68c924 EC |
332 | |
333 | /* The argument of the -mtune= flag. The architecture for which we | |
334 | are optimizing. */ | |
335 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 336 | static const char *mips_tune_string; |
ec68c924 | 337 | |
316f5878 | 338 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
339 | static int mips_32bitmode = 0; |
340 | ||
316f5878 RS |
341 | /* True if the given ABI requires 32-bit registers. */ |
342 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
343 | ||
344 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
345 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
346 | ((ABI) == N32_ABI \ | |
347 | || (ABI) == N64_ABI \ | |
316f5878 RS |
348 | || (ABI) == O64_ABI) |
349 | ||
ad3fea08 | 350 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
351 | #define ISA_HAS_64BIT_REGS(ISA) \ |
352 | ((ISA) == ISA_MIPS3 \ | |
353 | || (ISA) == ISA_MIPS4 \ | |
354 | || (ISA) == ISA_MIPS5 \ | |
355 | || (ISA) == ISA_MIPS64 \ | |
356 | || (ISA) == ISA_MIPS64R2) | |
9ce8a5dd | 357 | |
ad3fea08 TS |
358 | /* Return true if ISA supports 64 bit wide float registers. */ |
359 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
360 | ((ISA) == ISA_MIPS3 \ | |
361 | || (ISA) == ISA_MIPS4 \ | |
362 | || (ISA) == ISA_MIPS5 \ | |
363 | || (ISA) == ISA_MIPS32R2 \ | |
364 | || (ISA) == ISA_MIPS64 \ | |
365 | || (ISA) == ISA_MIPS64R2) | |
366 | ||
af7ee8bf CD |
367 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
368 | instructions. */ | |
707bfff6 | 369 | #define ISA_HAS_DROR(ISA) \ |
df58fc94 RS |
370 | ((ISA) == ISA_MIPS64R2 \ |
371 | || (mips_opts.micromips \ | |
372 | && ISA_HAS_64BIT_REGS (ISA)) \ | |
373 | ) | |
af7ee8bf CD |
374 | |
375 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
376 | instructions. */ | |
707bfff6 TS |
377 | #define ISA_HAS_ROR(ISA) \ |
378 | ((ISA) == ISA_MIPS32R2 \ | |
379 | || (ISA) == ISA_MIPS64R2 \ | |
846ef2d0 | 380 | || (mips_opts.ase & ASE_SMARTMIPS) \ |
df58fc94 RS |
381 | || mips_opts.micromips \ |
382 | ) | |
707bfff6 | 383 | |
7455baf8 TS |
384 | /* Return true if ISA supports single-precision floats in odd registers. */ |
385 | #define ISA_HAS_ODD_SINGLE_FPR(ISA) \ | |
386 | ((ISA) == ISA_MIPS32 \ | |
387 | || (ISA) == ISA_MIPS32R2 \ | |
388 | || (ISA) == ISA_MIPS64 \ | |
389 | || (ISA) == ISA_MIPS64R2) | |
af7ee8bf | 390 | |
ad3fea08 TS |
391 | /* Return true if ISA supports move to/from high part of a 64-bit |
392 | floating-point register. */ | |
393 | #define ISA_HAS_MXHC1(ISA) \ | |
394 | ((ISA) == ISA_MIPS32R2 \ | |
395 | || (ISA) == ISA_MIPS64R2) | |
396 | ||
e013f690 | 397 | #define HAVE_32BIT_GPRS \ |
ad3fea08 | 398 | (mips_opts.gp32 || !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 399 | |
e013f690 | 400 | #define HAVE_32BIT_FPRS \ |
ad3fea08 | 401 | (mips_opts.fp32 || !ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
ca4e0257 | 402 | |
ad3fea08 TS |
403 | #define HAVE_64BIT_GPRS (!HAVE_32BIT_GPRS) |
404 | #define HAVE_64BIT_FPRS (!HAVE_32BIT_FPRS) | |
ca4e0257 | 405 | |
316f5878 | 406 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 407 | |
316f5878 | 408 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 409 | |
3b91255e RS |
410 | /* True if relocations are stored in-place. */ |
411 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
412 | ||
aed1a261 RS |
413 | /* The ABI-derived address size. */ |
414 | #define HAVE_64BIT_ADDRESSES \ | |
415 | (HAVE_64BIT_GPRS && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) | |
416 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) | |
e013f690 | 417 | |
aed1a261 RS |
418 | /* The size of symbolic constants (i.e., expressions of the form |
419 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
420 | #define HAVE_32BIT_SYMBOLS \ | |
421 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
422 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 423 | |
b7c7d6c1 TS |
424 | /* Addresses are loaded in different ways, depending on the address size |
425 | in use. The n32 ABI Documentation also mandates the use of additions | |
426 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 427 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 428 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
429 | |
430 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 431 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
432 | |
433 | #define ADDRESS_LOAD_INSN \ | |
434 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
435 | ||
436 | #define ADDRESS_STORE_INSN \ | |
437 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
438 | ||
a4672219 | 439 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
440 | #define CPU_HAS_MIPS16(cpu) \ |
441 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
442 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 443 | |
2309ddf2 | 444 | /* Return true if the given CPU supports the microMIPS ASE. */ |
df58fc94 RS |
445 | #define CPU_HAS_MICROMIPS(cpu) 0 |
446 | ||
60b63b72 RS |
447 | /* True if CPU has a dror instruction. */ |
448 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
449 | ||
450 | /* True if CPU has a ror instruction. */ | |
451 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
452 | ||
dd6a37e7 | 453 | /* True if CPU is in the Octeon family */ |
432233b3 | 454 | #define CPU_IS_OCTEON(CPU) ((CPU) == CPU_OCTEON || (CPU) == CPU_OCTEONP || (CPU) == CPU_OCTEON2) |
dd6a37e7 | 455 | |
dd3cbb7e | 456 | /* True if CPU has seq/sne and seqi/snei instructions. */ |
dd6a37e7 | 457 | #define CPU_HAS_SEQ(CPU) (CPU_IS_OCTEON (CPU)) |
dd3cbb7e | 458 | |
0aa27725 RS |
459 | /* True, if CPU has support for ldc1 and sdc1. */ |
460 | #define CPU_HAS_LDC1_SDC1(CPU) \ | |
461 | ((mips_opts.isa != ISA_MIPS1) && ((CPU) != CPU_R5900)) | |
462 | ||
c8978940 CD |
463 | /* True if mflo and mfhi can be immediately followed by instructions |
464 | which write to the HI and LO registers. | |
465 | ||
466 | According to MIPS specifications, MIPS ISAs I, II, and III need | |
467 | (at least) two instructions between the reads of HI/LO and | |
468 | instructions which write them, and later ISAs do not. Contradicting | |
469 | the MIPS specifications, some MIPS IV processor user manuals (e.g. | |
470 | the UM for the NEC Vr5000) document needing the instructions between | |
471 | HI/LO reads and writes, as well. Therefore, we declare only MIPS32, | |
472 | MIPS64 and later ISAs to have the interlocks, plus any specific | |
473 | earlier-ISA CPUs for which CPU documentation declares that the | |
474 | instructions are really interlocked. */ | |
475 | #define hilo_interlocks \ | |
476 | (mips_opts.isa == ISA_MIPS32 \ | |
477 | || mips_opts.isa == ISA_MIPS32R2 \ | |
478 | || mips_opts.isa == ISA_MIPS64 \ | |
479 | || mips_opts.isa == ISA_MIPS64R2 \ | |
480 | || mips_opts.arch == CPU_R4010 \ | |
e407c74b | 481 | || mips_opts.arch == CPU_R5900 \ |
c8978940 CD |
482 | || mips_opts.arch == CPU_R10000 \ |
483 | || mips_opts.arch == CPU_R12000 \ | |
3aa3176b TS |
484 | || mips_opts.arch == CPU_R14000 \ |
485 | || mips_opts.arch == CPU_R16000 \ | |
c8978940 | 486 | || mips_opts.arch == CPU_RM7000 \ |
c8978940 | 487 | || mips_opts.arch == CPU_VR5500 \ |
df58fc94 | 488 | || mips_opts.micromips \ |
c8978940 | 489 | ) |
252b5132 RH |
490 | |
491 | /* Whether the processor uses hardware interlocks to protect reads | |
81912461 ILT |
492 | from the GPRs after they are loaded from memory, and thus does not |
493 | require nops to be inserted. This applies to instructions marked | |
67dc82bc | 494 | INSN_LOAD_MEMORY. These nops are only required at MIPS ISA |
df58fc94 RS |
495 | level I and microMIPS mode instructions are always interlocked. */ |
496 | #define gpr_interlocks \ | |
497 | (mips_opts.isa != ISA_MIPS1 \ | |
498 | || mips_opts.arch == CPU_R3900 \ | |
e407c74b | 499 | || mips_opts.arch == CPU_R5900 \ |
df58fc94 RS |
500 | || mips_opts.micromips \ |
501 | ) | |
252b5132 | 502 | |
81912461 ILT |
503 | /* Whether the processor uses hardware interlocks to avoid delays |
504 | required by coprocessor instructions, and thus does not require | |
505 | nops to be inserted. This applies to instructions marked | |
506 | INSN_LOAD_COPROC_DELAY, INSN_COPROC_MOVE_DELAY, and to delays | |
507 | between instructions marked INSN_WRITE_COND_CODE and ones marked | |
508 | INSN_READ_COND_CODE. These nops are only required at MIPS ISA | |
df58fc94 RS |
509 | levels I, II, and III and microMIPS mode instructions are always |
510 | interlocked. */ | |
bdaaa2e1 | 511 | /* Itbl support may require additional care here. */ |
81912461 ILT |
512 | #define cop_interlocks \ |
513 | ((mips_opts.isa != ISA_MIPS1 \ | |
514 | && mips_opts.isa != ISA_MIPS2 \ | |
515 | && mips_opts.isa != ISA_MIPS3) \ | |
516 | || mips_opts.arch == CPU_R4300 \ | |
df58fc94 | 517 | || mips_opts.micromips \ |
81912461 ILT |
518 | ) |
519 | ||
520 | /* Whether the processor uses hardware interlocks to protect reads | |
521 | from coprocessor registers after they are loaded from memory, and | |
522 | thus does not require nops to be inserted. This applies to | |
523 | instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only | |
df58fc94 RS |
524 | requires at MIPS ISA level I and microMIPS mode instructions are |
525 | always interlocked. */ | |
526 | #define cop_mem_interlocks \ | |
527 | (mips_opts.isa != ISA_MIPS1 \ | |
528 | || mips_opts.micromips \ | |
529 | ) | |
252b5132 | 530 | |
6b76fefe CM |
531 | /* Is this a mfhi or mflo instruction? */ |
532 | #define MF_HILO_INSN(PINFO) \ | |
b19e8a9b AN |
533 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) |
534 | ||
df58fc94 RS |
535 | /* Whether code compression (either of the MIPS16 or the microMIPS ASEs) |
536 | has been selected. This implies, in particular, that addresses of text | |
537 | labels have their LSB set. */ | |
538 | #define HAVE_CODE_COMPRESSION \ | |
539 | ((mips_opts.mips16 | mips_opts.micromips) != 0) | |
540 | ||
42429eac RS |
541 | /* The minimum and maximum signed values that can be stored in a GPR. */ |
542 | #define GPR_SMAX ((offsetT) (((valueT) 1 << (HAVE_64BIT_GPRS ? 63 : 31)) - 1)) | |
543 | #define GPR_SMIN (-GPR_SMAX - 1) | |
544 | ||
252b5132 RH |
545 | /* MIPS PIC level. */ |
546 | ||
a161fe53 | 547 | enum mips_pic_level mips_pic; |
252b5132 | 548 | |
c9914766 | 549 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 550 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 551 | static int mips_big_got = 0; |
252b5132 RH |
552 | |
553 | /* 1 if trap instructions should used for overflow rather than break | |
554 | instructions. */ | |
c9914766 | 555 | static int mips_trap = 0; |
252b5132 | 556 | |
119d663a | 557 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 558 | by assembling two single width halves into two single width floating |
119d663a NC |
559 | point registers which just happen to alias the double width destination |
560 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 561 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
562 | automatically at assemble time. */ |
563 | static int mips_disable_float_construction; | |
564 | ||
252b5132 RH |
565 | /* Non-zero if any .set noreorder directives were used. */ |
566 | ||
567 | static int mips_any_noreorder; | |
568 | ||
6b76fefe CM |
569 | /* Non-zero if nops should be inserted when the register referenced in |
570 | an mfhi/mflo instruction is read in the next two instructions. */ | |
571 | static int mips_7000_hilo_fix; | |
572 | ||
02ffd3e4 | 573 | /* The size of objects in the small data section. */ |
156c2f8b | 574 | static unsigned int g_switch_value = 8; |
252b5132 RH |
575 | /* Whether the -G option was used. */ |
576 | static int g_switch_seen = 0; | |
577 | ||
578 | #define N_RMASK 0xc4 | |
579 | #define N_VFP 0xd4 | |
580 | ||
581 | /* If we can determine in advance that GP optimization won't be | |
582 | possible, we can skip the relaxation stuff that tries to produce | |
583 | GP-relative references. This makes delay slot optimization work | |
584 | better. | |
585 | ||
586 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
587 | gcc output. It needs to guess right for gcc, otherwise gcc |
588 | will put what it thinks is a GP-relative instruction in a branch | |
589 | delay slot. | |
252b5132 RH |
590 | |
591 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
592 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 593 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
594 | |
595 | /* handle of the OPCODE hash table */ | |
596 | static struct hash_control *op_hash = NULL; | |
597 | ||
598 | /* The opcode hash table we use for the mips16. */ | |
599 | static struct hash_control *mips16_op_hash = NULL; | |
600 | ||
df58fc94 RS |
601 | /* The opcode hash table we use for the microMIPS ASE. */ |
602 | static struct hash_control *micromips_op_hash = NULL; | |
603 | ||
252b5132 RH |
604 | /* This array holds the chars that always start a comment. If the |
605 | pre-processor is disabled, these aren't very useful */ | |
606 | const char comment_chars[] = "#"; | |
607 | ||
608 | /* This array holds the chars that only start a comment at the beginning of | |
609 | a line. If the line seems to have the form '# 123 filename' | |
610 | .line and .file directives will appear in the pre-processed output */ | |
611 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
612 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 613 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
614 | /* Also note that C style comments are always supported. */ |
615 | const char line_comment_chars[] = "#"; | |
616 | ||
bdaaa2e1 | 617 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 618 | const char line_separator_chars[] = ";"; |
252b5132 RH |
619 | |
620 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
621 | const char EXP_CHARS[] = "eE"; | |
622 | ||
623 | /* Chars that mean this number is a floating point constant */ | |
624 | /* As in 0f12.456 */ | |
625 | /* or 0d1.2345e12 */ | |
626 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
627 | ||
628 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
629 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
630 | but nothing is ideal around here. | |
631 | */ | |
632 | ||
e3de51ce RS |
633 | /* Types of printf format used for instruction-related error messages. |
634 | "I" means int ("%d") and "S" means string ("%s"). */ | |
635 | enum mips_insn_error_format { | |
636 | ERR_FMT_PLAIN, | |
637 | ERR_FMT_I, | |
638 | ERR_FMT_SS, | |
639 | }; | |
640 | ||
641 | /* Information about an error that was found while assembling the current | |
642 | instruction. */ | |
643 | struct mips_insn_error { | |
644 | /* We sometimes need to match an instruction against more than one | |
645 | opcode table entry. Errors found during this matching are reported | |
646 | against a particular syntactic argument rather than against the | |
647 | instruction as a whole. We grade these messages so that errors | |
648 | against argument N have a greater priority than an error against | |
649 | any argument < N, since the former implies that arguments up to N | |
650 | were acceptable and that the opcode entry was therefore a closer match. | |
651 | If several matches report an error against the same argument, | |
652 | we only use that error if it is the same in all cases. | |
653 | ||
654 | min_argnum is the minimum argument number for which an error message | |
655 | should be accepted. It is 0 if MSG is against the instruction as | |
656 | a whole. */ | |
657 | int min_argnum; | |
658 | ||
659 | /* The printf()-style message, including its format and arguments. */ | |
660 | enum mips_insn_error_format format; | |
661 | const char *msg; | |
662 | union { | |
663 | int i; | |
664 | const char *ss[2]; | |
665 | } u; | |
666 | }; | |
667 | ||
668 | /* The error that should be reported for the current instruction. */ | |
669 | static struct mips_insn_error insn_error; | |
252b5132 RH |
670 | |
671 | static int auto_align = 1; | |
672 | ||
673 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
674 | offset in the stack frame from which to restore the $gp register. | |
675 | This is set by the .cprestore pseudo-op, and saved in this | |
676 | variable. */ | |
677 | static offsetT mips_cprestore_offset = -1; | |
678 | ||
67c1ffbe | 679 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 680 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 681 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
682 | static offsetT mips_cpreturn_offset = -1; |
683 | static int mips_cpreturn_register = -1; | |
684 | static int mips_gp_register = GP; | |
def2e0dd | 685 | static int mips_gprel_offset = 0; |
6478892d | 686 | |
7a621144 DJ |
687 | /* Whether mips_cprestore_offset has been set in the current function |
688 | (or whether it has already been warned about, if not). */ | |
689 | static int mips_cprestore_valid = 0; | |
690 | ||
252b5132 RH |
691 | /* This is the register which holds the stack frame, as set by the |
692 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
693 | static int mips_frame_reg = SP; | |
694 | ||
7a621144 DJ |
695 | /* Whether mips_frame_reg has been set in the current function |
696 | (or whether it has already been warned about, if not). */ | |
697 | static int mips_frame_reg_valid = 0; | |
698 | ||
252b5132 RH |
699 | /* To output NOP instructions correctly, we need to keep information |
700 | about the previous two instructions. */ | |
701 | ||
702 | /* Whether we are optimizing. The default value of 2 means to remove | |
703 | unneeded NOPs and swap branch instructions when possible. A value | |
704 | of 1 means to not swap branches. A value of 0 means to always | |
705 | insert NOPs. */ | |
706 | static int mips_optimize = 2; | |
707 | ||
708 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
709 | equivalent to seeing no -g option at all. */ | |
710 | static int mips_debug = 0; | |
711 | ||
7d8e00cf RS |
712 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
713 | #define MAX_VR4130_NOPS 4 | |
714 | ||
715 | /* The maximum number of NOPs needed to fill delay slots. */ | |
716 | #define MAX_DELAY_NOPS 2 | |
717 | ||
718 | /* The maximum number of NOPs needed for any purpose. */ | |
719 | #define MAX_NOPS 4 | |
71400594 RS |
720 | |
721 | /* A list of previous instructions, with index 0 being the most recent. | |
722 | We need to look back MAX_NOPS instructions when filling delay slots | |
723 | or working around processor errata. We need to look back one | |
724 | instruction further if we're thinking about using history[0] to | |
725 | fill a branch delay slot. */ | |
726 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 727 | |
fc76e730 | 728 | /* Arrays of operands for each instruction. */ |
14daeee3 | 729 | #define MAX_OPERANDS 6 |
fc76e730 RS |
730 | struct mips_operand_array { |
731 | const struct mips_operand *operand[MAX_OPERANDS]; | |
732 | }; | |
733 | static struct mips_operand_array *mips_operands; | |
734 | static struct mips_operand_array *mips16_operands; | |
735 | static struct mips_operand_array *micromips_operands; | |
736 | ||
1e915849 | 737 | /* Nop instructions used by emit_nop. */ |
df58fc94 RS |
738 | static struct mips_cl_insn nop_insn; |
739 | static struct mips_cl_insn mips16_nop_insn; | |
740 | static struct mips_cl_insn micromips_nop16_insn; | |
741 | static struct mips_cl_insn micromips_nop32_insn; | |
1e915849 RS |
742 | |
743 | /* The appropriate nop for the current mode. */ | |
833794fc MR |
744 | #define NOP_INSN (mips_opts.mips16 \ |
745 | ? &mips16_nop_insn \ | |
746 | : (mips_opts.micromips \ | |
747 | ? (mips_opts.insn32 \ | |
748 | ? µmips_nop32_insn \ | |
749 | : µmips_nop16_insn) \ | |
750 | : &nop_insn)) | |
df58fc94 RS |
751 | |
752 | /* The size of NOP_INSN in bytes. */ | |
833794fc MR |
753 | #define NOP_INSN_SIZE ((mips_opts.mips16 \ |
754 | || (mips_opts.micromips && !mips_opts.insn32)) \ | |
755 | ? 2 : 4) | |
252b5132 | 756 | |
252b5132 RH |
757 | /* If this is set, it points to a frag holding nop instructions which |
758 | were inserted before the start of a noreorder section. If those | |
759 | nops turn out to be unnecessary, the size of the frag can be | |
760 | decreased. */ | |
761 | static fragS *prev_nop_frag; | |
762 | ||
763 | /* The number of nop instructions we created in prev_nop_frag. */ | |
764 | static int prev_nop_frag_holds; | |
765 | ||
766 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 767 | prev_nop_frag. */ |
252b5132 RH |
768 | static int prev_nop_frag_required; |
769 | ||
770 | /* The number of instructions we've seen since prev_nop_frag. */ | |
771 | static int prev_nop_frag_since; | |
772 | ||
e8044f35 RS |
773 | /* Relocations against symbols are sometimes done in two parts, with a HI |
774 | relocation and a LO relocation. Each relocation has only 16 bits of | |
775 | space to store an addend. This means that in order for the linker to | |
776 | handle carries correctly, it must be able to locate both the HI and | |
777 | the LO relocation. This means that the relocations must appear in | |
778 | order in the relocation table. | |
252b5132 RH |
779 | |
780 | In order to implement this, we keep track of each unmatched HI | |
781 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 782 | corresponding LO relocation. */ |
252b5132 | 783 | |
e972090a NC |
784 | struct mips_hi_fixup |
785 | { | |
252b5132 RH |
786 | /* Next HI fixup. */ |
787 | struct mips_hi_fixup *next; | |
788 | /* This fixup. */ | |
789 | fixS *fixp; | |
790 | /* The section this fixup is in. */ | |
791 | segT seg; | |
792 | }; | |
793 | ||
794 | /* The list of unmatched HI relocs. */ | |
795 | ||
796 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
797 | ||
64bdfcaf RS |
798 | /* The frag containing the last explicit relocation operator. |
799 | Null if explicit relocations have not been used. */ | |
800 | ||
801 | static fragS *prev_reloc_op_frag; | |
802 | ||
252b5132 RH |
803 | /* Map mips16 register numbers to normal MIPS register numbers. */ |
804 | ||
e972090a NC |
805 | static const unsigned int mips16_to_32_reg_map[] = |
806 | { | |
252b5132 RH |
807 | 16, 17, 2, 3, 4, 5, 6, 7 |
808 | }; | |
60b63b72 | 809 | |
df58fc94 RS |
810 | /* Map microMIPS register numbers to normal MIPS register numbers. */ |
811 | ||
df58fc94 | 812 | #define micromips_to_32_reg_d_map mips16_to_32_reg_map |
df58fc94 RS |
813 | |
814 | /* The microMIPS registers with type h. */ | |
e76ff5ab | 815 | static const unsigned int micromips_to_32_reg_h_map1[] = |
df58fc94 RS |
816 | { |
817 | 5, 5, 6, 4, 4, 4, 4, 4 | |
818 | }; | |
e76ff5ab | 819 | static const unsigned int micromips_to_32_reg_h_map2[] = |
df58fc94 RS |
820 | { |
821 | 6, 7, 7, 21, 22, 5, 6, 7 | |
822 | }; | |
823 | ||
df58fc94 RS |
824 | /* The microMIPS registers with type m. */ |
825 | static const unsigned int micromips_to_32_reg_m_map[] = | |
826 | { | |
827 | 0, 17, 2, 3, 16, 18, 19, 20 | |
828 | }; | |
829 | ||
830 | #define micromips_to_32_reg_n_map micromips_to_32_reg_m_map | |
831 | ||
71400594 RS |
832 | /* Classifies the kind of instructions we're interested in when |
833 | implementing -mfix-vr4120. */ | |
c67a084a NC |
834 | enum fix_vr4120_class |
835 | { | |
71400594 RS |
836 | FIX_VR4120_MACC, |
837 | FIX_VR4120_DMACC, | |
838 | FIX_VR4120_MULT, | |
839 | FIX_VR4120_DMULT, | |
840 | FIX_VR4120_DIV, | |
841 | FIX_VR4120_MTHILO, | |
842 | NUM_FIX_VR4120_CLASSES | |
843 | }; | |
844 | ||
c67a084a NC |
845 | /* ...likewise -mfix-loongson2f-jump. */ |
846 | static bfd_boolean mips_fix_loongson2f_jump; | |
847 | ||
848 | /* ...likewise -mfix-loongson2f-nop. */ | |
849 | static bfd_boolean mips_fix_loongson2f_nop; | |
850 | ||
851 | /* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed. */ | |
852 | static bfd_boolean mips_fix_loongson2f; | |
853 | ||
71400594 RS |
854 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if |
855 | there must be at least one other instruction between an instruction | |
856 | of type X and an instruction of type Y. */ | |
857 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
858 | ||
859 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 860 | static int mips_fix_vr4120; |
4a6a3df4 | 861 | |
7d8e00cf RS |
862 | /* ...likewise -mfix-vr4130. */ |
863 | static int mips_fix_vr4130; | |
864 | ||
6a32d874 CM |
865 | /* ...likewise -mfix-24k. */ |
866 | static int mips_fix_24k; | |
867 | ||
a8d14a88 CM |
868 | /* ...likewise -mfix-rm7000 */ |
869 | static int mips_fix_rm7000; | |
870 | ||
d954098f DD |
871 | /* ...likewise -mfix-cn63xxp1 */ |
872 | static bfd_boolean mips_fix_cn63xxp1; | |
873 | ||
4a6a3df4 AO |
874 | /* We don't relax branches by default, since this causes us to expand |
875 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
876 | fail to compute the offset before expanding the macro to the most | |
877 | efficient expansion. */ | |
878 | ||
879 | static int mips_relax_branch; | |
252b5132 | 880 | \f |
4d7206a2 RS |
881 | /* The expansion of many macros depends on the type of symbol that |
882 | they refer to. For example, when generating position-dependent code, | |
883 | a macro that refers to a symbol may have two different expansions, | |
884 | one which uses GP-relative addresses and one which uses absolute | |
885 | addresses. When generating SVR4-style PIC, a macro may have | |
886 | different expansions for local and global symbols. | |
887 | ||
888 | We handle these situations by generating both sequences and putting | |
889 | them in variant frags. In position-dependent code, the first sequence | |
890 | will be the GP-relative one and the second sequence will be the | |
891 | absolute one. In SVR4 PIC, the first sequence will be for global | |
892 | symbols and the second will be for local symbols. | |
893 | ||
584892a6 RS |
894 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
895 | SECOND are the lengths of the two sequences in bytes. These fields | |
896 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
897 | the subtype has the following flags: | |
4d7206a2 | 898 | |
584892a6 RS |
899 | RELAX_USE_SECOND |
900 | Set if it has been decided that we should use the second | |
901 | sequence instead of the first. | |
902 | ||
903 | RELAX_SECOND_LONGER | |
904 | Set in the first variant frag if the macro's second implementation | |
905 | is longer than its first. This refers to the macro as a whole, | |
906 | not an individual relaxation. | |
907 | ||
908 | RELAX_NOMACRO | |
909 | Set in the first variant frag if the macro appeared in a .set nomacro | |
910 | block and if one alternative requires a warning but the other does not. | |
911 | ||
912 | RELAX_DELAY_SLOT | |
913 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
914 | delay slot. | |
4d7206a2 | 915 | |
df58fc94 RS |
916 | RELAX_DELAY_SLOT_16BIT |
917 | Like RELAX_DELAY_SLOT, but indicates that the delay slot requires a | |
918 | 16-bit instruction. | |
919 | ||
920 | RELAX_DELAY_SLOT_SIZE_FIRST | |
921 | Like RELAX_DELAY_SLOT, but indicates that the first implementation of | |
922 | the macro is of the wrong size for the branch delay slot. | |
923 | ||
924 | RELAX_DELAY_SLOT_SIZE_SECOND | |
925 | Like RELAX_DELAY_SLOT, but indicates that the second implementation of | |
926 | the macro is of the wrong size for the branch delay slot. | |
927 | ||
4d7206a2 RS |
928 | The frag's "opcode" points to the first fixup for relaxable code. |
929 | ||
930 | Relaxable macros are generated using a sequence such as: | |
931 | ||
932 | relax_start (SYMBOL); | |
933 | ... generate first expansion ... | |
934 | relax_switch (); | |
935 | ... generate second expansion ... | |
936 | relax_end (); | |
937 | ||
938 | The code and fixups for the unwanted alternative are discarded | |
939 | by md_convert_frag. */ | |
584892a6 | 940 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 941 | |
584892a6 RS |
942 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
943 | #define RELAX_SECOND(X) ((X) & 0xff) | |
944 | #define RELAX_USE_SECOND 0x10000 | |
945 | #define RELAX_SECOND_LONGER 0x20000 | |
946 | #define RELAX_NOMACRO 0x40000 | |
947 | #define RELAX_DELAY_SLOT 0x80000 | |
df58fc94 RS |
948 | #define RELAX_DELAY_SLOT_16BIT 0x100000 |
949 | #define RELAX_DELAY_SLOT_SIZE_FIRST 0x200000 | |
950 | #define RELAX_DELAY_SLOT_SIZE_SECOND 0x400000 | |
252b5132 | 951 | |
4a6a3df4 AO |
952 | /* Branch without likely bit. If label is out of range, we turn: |
953 | ||
954 | beq reg1, reg2, label | |
955 | delay slot | |
956 | ||
957 | into | |
958 | ||
959 | bne reg1, reg2, 0f | |
960 | nop | |
961 | j label | |
962 | 0: delay slot | |
963 | ||
964 | with the following opcode replacements: | |
965 | ||
966 | beq <-> bne | |
967 | blez <-> bgtz | |
968 | bltz <-> bgez | |
969 | bc1f <-> bc1t | |
970 | ||
971 | bltzal <-> bgezal (with jal label instead of j label) | |
972 | ||
973 | Even though keeping the delay slot instruction in the delay slot of | |
974 | the branch would be more efficient, it would be very tricky to do | |
975 | correctly, because we'd have to introduce a variable frag *after* | |
976 | the delay slot instruction, and expand that instead. Let's do it | |
977 | the easy way for now, even if the branch-not-taken case now costs | |
978 | one additional instruction. Out-of-range branches are not supposed | |
979 | to be common, anyway. | |
980 | ||
981 | Branch likely. If label is out of range, we turn: | |
982 | ||
983 | beql reg1, reg2, label | |
984 | delay slot (annulled if branch not taken) | |
985 | ||
986 | into | |
987 | ||
988 | beql reg1, reg2, 1f | |
989 | nop | |
990 | beql $0, $0, 2f | |
991 | nop | |
992 | 1: j[al] label | |
993 | delay slot (executed only if branch taken) | |
994 | 2: | |
995 | ||
996 | It would be possible to generate a shorter sequence by losing the | |
997 | likely bit, generating something like: | |
b34976b6 | 998 | |
4a6a3df4 AO |
999 | bne reg1, reg2, 0f |
1000 | nop | |
1001 | j[al] label | |
1002 | delay slot (executed only if branch taken) | |
1003 | 0: | |
1004 | ||
1005 | beql -> bne | |
1006 | bnel -> beq | |
1007 | blezl -> bgtz | |
1008 | bgtzl -> blez | |
1009 | bltzl -> bgez | |
1010 | bgezl -> bltz | |
1011 | bc1fl -> bc1t | |
1012 | bc1tl -> bc1f | |
1013 | ||
1014 | bltzall -> bgezal (with jal label instead of j label) | |
1015 | bgezall -> bltzal (ditto) | |
1016 | ||
1017 | ||
1018 | but it's not clear that it would actually improve performance. */ | |
66b3e8da MR |
1019 | #define RELAX_BRANCH_ENCODE(at, uncond, likely, link, toofar) \ |
1020 | ((relax_substateT) \ | |
1021 | (0xc0000000 \ | |
1022 | | ((at) & 0x1f) \ | |
1023 | | ((toofar) ? 0x20 : 0) \ | |
1024 | | ((link) ? 0x40 : 0) \ | |
1025 | | ((likely) ? 0x80 : 0) \ | |
1026 | | ((uncond) ? 0x100 : 0))) | |
4a6a3df4 | 1027 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
66b3e8da MR |
1028 | #define RELAX_BRANCH_UNCOND(i) (((i) & 0x100) != 0) |
1029 | #define RELAX_BRANCH_LIKELY(i) (((i) & 0x80) != 0) | |
1030 | #define RELAX_BRANCH_LINK(i) (((i) & 0x40) != 0) | |
1031 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 0x20) != 0) | |
1032 | #define RELAX_BRANCH_AT(i) ((i) & 0x1f) | |
4a6a3df4 | 1033 | |
252b5132 RH |
1034 | /* For mips16 code, we use an entirely different form of relaxation. |
1035 | mips16 supports two versions of most instructions which take | |
1036 | immediate values: a small one which takes some small value, and a | |
1037 | larger one which takes a 16 bit value. Since branches also follow | |
1038 | this pattern, relaxing these values is required. | |
1039 | ||
1040 | We can assemble both mips16 and normal MIPS code in a single | |
1041 | object. Therefore, we need to support this type of relaxation at | |
1042 | the same time that we support the relaxation described above. We | |
1043 | use the high bit of the subtype field to distinguish these cases. | |
1044 | ||
1045 | The information we store for this type of relaxation is the | |
1046 | argument code found in the opcode file for this relocation, whether | |
1047 | the user explicitly requested a small or extended form, and whether | |
1048 | the relocation is in a jump or jal delay slot. That tells us the | |
1049 | size of the value, and how it should be stored. We also store | |
1050 | whether the fragment is considered to be extended or not. We also | |
1051 | store whether this is known to be a branch to a different section, | |
1052 | whether we have tried to relax this frag yet, and whether we have | |
1053 | ever extended a PC relative fragment because of a shift count. */ | |
1054 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
1055 | (0x80000000 \ | |
1056 | | ((type) & 0xff) \ | |
1057 | | ((small) ? 0x100 : 0) \ | |
1058 | | ((ext) ? 0x200 : 0) \ | |
1059 | | ((dslot) ? 0x400 : 0) \ | |
1060 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 1061 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
1062 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
1063 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
1064 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
1065 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
1066 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
1067 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
1068 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
1069 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
1070 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
1071 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
1072 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 | 1073 | |
df58fc94 RS |
1074 | /* For microMIPS code, we use relaxation similar to one we use for |
1075 | MIPS16 code. Some instructions that take immediate values support | |
1076 | two encodings: a small one which takes some small value, and a | |
1077 | larger one which takes a 16 bit value. As some branches also follow | |
1078 | this pattern, relaxing these values is required. | |
1079 | ||
1080 | We can assemble both microMIPS and normal MIPS code in a single | |
1081 | object. Therefore, we need to support this type of relaxation at | |
1082 | the same time that we support the relaxation described above. We | |
1083 | use one of the high bits of the subtype field to distinguish these | |
1084 | cases. | |
1085 | ||
1086 | The information we store for this type of relaxation is the argument | |
1087 | code found in the opcode file for this relocation, the register | |
40209cad MR |
1088 | selected as the assembler temporary, whether the branch is |
1089 | unconditional, whether it is compact, whether it stores the link | |
1090 | address implicitly in $ra, whether relaxation of out-of-range 32-bit | |
1091 | branches to a sequence of instructions is enabled, and whether the | |
1092 | displacement of a branch is too large to fit as an immediate argument | |
1093 | of a 16-bit and a 32-bit branch, respectively. */ | |
1094 | #define RELAX_MICROMIPS_ENCODE(type, at, uncond, compact, link, \ | |
1095 | relax32, toofar16, toofar32) \ | |
1096 | (0x40000000 \ | |
1097 | | ((type) & 0xff) \ | |
1098 | | (((at) & 0x1f) << 8) \ | |
1099 | | ((uncond) ? 0x2000 : 0) \ | |
1100 | | ((compact) ? 0x4000 : 0) \ | |
1101 | | ((link) ? 0x8000 : 0) \ | |
1102 | | ((relax32) ? 0x10000 : 0) \ | |
1103 | | ((toofar16) ? 0x20000 : 0) \ | |
1104 | | ((toofar32) ? 0x40000 : 0)) | |
df58fc94 RS |
1105 | #define RELAX_MICROMIPS_P(i) (((i) & 0xc0000000) == 0x40000000) |
1106 | #define RELAX_MICROMIPS_TYPE(i) ((i) & 0xff) | |
1107 | #define RELAX_MICROMIPS_AT(i) (((i) >> 8) & 0x1f) | |
40209cad MR |
1108 | #define RELAX_MICROMIPS_UNCOND(i) (((i) & 0x2000) != 0) |
1109 | #define RELAX_MICROMIPS_COMPACT(i) (((i) & 0x4000) != 0) | |
1110 | #define RELAX_MICROMIPS_LINK(i) (((i) & 0x8000) != 0) | |
1111 | #define RELAX_MICROMIPS_RELAX32(i) (((i) & 0x10000) != 0) | |
1112 | ||
1113 | #define RELAX_MICROMIPS_TOOFAR16(i) (((i) & 0x20000) != 0) | |
1114 | #define RELAX_MICROMIPS_MARK_TOOFAR16(i) ((i) | 0x20000) | |
1115 | #define RELAX_MICROMIPS_CLEAR_TOOFAR16(i) ((i) & ~0x20000) | |
1116 | #define RELAX_MICROMIPS_TOOFAR32(i) (((i) & 0x40000) != 0) | |
1117 | #define RELAX_MICROMIPS_MARK_TOOFAR32(i) ((i) | 0x40000) | |
1118 | #define RELAX_MICROMIPS_CLEAR_TOOFAR32(i) ((i) & ~0x40000) | |
df58fc94 | 1119 | |
43c0598f RS |
1120 | /* Sign-extend 16-bit value X. */ |
1121 | #define SEXT_16BIT(X) ((((X) + 0x8000) & 0xffff) - 0x8000) | |
1122 | ||
885add95 CD |
1123 | /* Is the given value a sign-extended 32-bit value? */ |
1124 | #define IS_SEXT_32BIT_NUM(x) \ | |
1125 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
1126 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
1127 | ||
1128 | /* Is the given value a sign-extended 16-bit value? */ | |
1129 | #define IS_SEXT_16BIT_NUM(x) \ | |
1130 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
1131 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
1132 | ||
df58fc94 RS |
1133 | /* Is the given value a sign-extended 12-bit value? */ |
1134 | #define IS_SEXT_12BIT_NUM(x) \ | |
1135 | (((((x) & 0xfff) ^ 0x800LL) - 0x800LL) == (x)) | |
1136 | ||
7f3c4072 CM |
1137 | /* Is the given value a sign-extended 9-bit value? */ |
1138 | #define IS_SEXT_9BIT_NUM(x) \ | |
1139 | (((((x) & 0x1ff) ^ 0x100LL) - 0x100LL) == (x)) | |
1140 | ||
2051e8c4 MR |
1141 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
1142 | #define IS_ZEXT_32BIT_NUM(x) \ | |
1143 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
1144 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
1145 | ||
bf12938e RS |
1146 | /* Extract bits MASK << SHIFT from STRUCT and shift them right |
1147 | SHIFT places. */ | |
1148 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
1149 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
1150 | ||
bf12938e | 1151 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ |
df58fc94 RS |
1152 | #define EXTRACT_OPERAND(MICROMIPS, FIELD, INSN) \ |
1153 | (!(MICROMIPS) \ | |
1154 | ? EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) \ | |
1155 | : EXTRACT_BITS ((INSN).insn_opcode, \ | |
1156 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD)) | |
bf12938e RS |
1157 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ |
1158 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
1159 | MIPS16OP_MASK_##FIELD, \ | |
1160 | MIPS16OP_SH_##FIELD) | |
5c04167a RS |
1161 | |
1162 | /* The MIPS16 EXTEND opcode, shifted left 16 places. */ | |
1163 | #define MIPS16_EXTEND (0xf000U << 16) | |
4d7206a2 | 1164 | \f |
df58fc94 RS |
1165 | /* Whether or not we are emitting a branch-likely macro. */ |
1166 | static bfd_boolean emit_branch_likely_macro = FALSE; | |
1167 | ||
4d7206a2 RS |
1168 | /* Global variables used when generating relaxable macros. See the |
1169 | comment above RELAX_ENCODE for more details about how relaxation | |
1170 | is used. */ | |
1171 | static struct { | |
1172 | /* 0 if we're not emitting a relaxable macro. | |
1173 | 1 if we're emitting the first of the two relaxation alternatives. | |
1174 | 2 if we're emitting the second alternative. */ | |
1175 | int sequence; | |
1176 | ||
1177 | /* The first relaxable fixup in the current frag. (In other words, | |
1178 | the first fixup that refers to relaxable code.) */ | |
1179 | fixS *first_fixup; | |
1180 | ||
1181 | /* sizes[0] says how many bytes of the first alternative are stored in | |
1182 | the current frag. Likewise sizes[1] for the second alternative. */ | |
1183 | unsigned int sizes[2]; | |
1184 | ||
1185 | /* The symbol on which the choice of sequence depends. */ | |
1186 | symbolS *symbol; | |
1187 | } mips_relax; | |
252b5132 | 1188 | \f |
584892a6 RS |
1189 | /* Global variables used to decide whether a macro needs a warning. */ |
1190 | static struct { | |
1191 | /* True if the macro is in a branch delay slot. */ | |
1192 | bfd_boolean delay_slot_p; | |
1193 | ||
df58fc94 RS |
1194 | /* Set to the length in bytes required if the macro is in a delay slot |
1195 | that requires a specific length of instruction, otherwise zero. */ | |
1196 | unsigned int delay_slot_length; | |
1197 | ||
584892a6 RS |
1198 | /* For relaxable macros, sizes[0] is the length of the first alternative |
1199 | in bytes and sizes[1] is the length of the second alternative. | |
1200 | For non-relaxable macros, both elements give the length of the | |
1201 | macro in bytes. */ | |
1202 | unsigned int sizes[2]; | |
1203 | ||
df58fc94 RS |
1204 | /* For relaxable macros, first_insn_sizes[0] is the length of the first |
1205 | instruction of the first alternative in bytes and first_insn_sizes[1] | |
1206 | is the length of the first instruction of the second alternative. | |
1207 | For non-relaxable macros, both elements give the length of the first | |
1208 | instruction in bytes. | |
1209 | ||
1210 | Set to zero if we haven't yet seen the first instruction. */ | |
1211 | unsigned int first_insn_sizes[2]; | |
1212 | ||
1213 | /* For relaxable macros, insns[0] is the number of instructions for the | |
1214 | first alternative and insns[1] is the number of instructions for the | |
1215 | second alternative. | |
1216 | ||
1217 | For non-relaxable macros, both elements give the number of | |
1218 | instructions for the macro. */ | |
1219 | unsigned int insns[2]; | |
1220 | ||
584892a6 RS |
1221 | /* The first variant frag for this macro. */ |
1222 | fragS *first_frag; | |
1223 | } mips_macro_warning; | |
1224 | \f | |
252b5132 RH |
1225 | /* Prototypes for static functions. */ |
1226 | ||
252b5132 RH |
1227 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; |
1228 | ||
b34976b6 | 1229 | static void append_insn |
df58fc94 RS |
1230 | (struct mips_cl_insn *, expressionS *, bfd_reloc_code_real_type *, |
1231 | bfd_boolean expansionp); | |
7d10b47d | 1232 | static void mips_no_prev_insn (void); |
c67a084a | 1233 | static void macro_build (expressionS *, const char *, const char *, ...); |
b34976b6 | 1234 | static void mips16_macro_build |
03ea81db | 1235 | (expressionS *, const char *, const char *, va_list *); |
67c0d1eb | 1236 | static void load_register (int, expressionS *, int); |
584892a6 RS |
1237 | static void macro_start (void); |
1238 | static void macro_end (void); | |
833794fc | 1239 | static void macro (struct mips_cl_insn *ip, char *str); |
17a2f251 | 1240 | static void mips16_macro (struct mips_cl_insn * ip); |
17a2f251 TS |
1241 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
1242 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 1243 | static void mips16_immed |
43c0598f RS |
1244 | (char *, unsigned int, int, bfd_reloc_code_real_type, offsetT, |
1245 | unsigned int, unsigned long *); | |
5e0116d5 | 1246 | static size_t my_getSmallExpression |
17a2f251 TS |
1247 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1248 | static void my_getExpression (expressionS *, char *); | |
1249 | static void s_align (int); | |
1250 | static void s_change_sec (int); | |
1251 | static void s_change_section (int); | |
1252 | static void s_cons (int); | |
1253 | static void s_float_cons (int); | |
1254 | static void s_mips_globl (int); | |
1255 | static void s_option (int); | |
1256 | static void s_mipsset (int); | |
1257 | static void s_abicalls (int); | |
1258 | static void s_cpload (int); | |
1259 | static void s_cpsetup (int); | |
1260 | static void s_cplocal (int); | |
1261 | static void s_cprestore (int); | |
1262 | static void s_cpreturn (int); | |
741d6ea8 JM |
1263 | static void s_dtprelword (int); |
1264 | static void s_dtpreldword (int); | |
d0f13682 CLT |
1265 | static void s_tprelword (int); |
1266 | static void s_tpreldword (int); | |
17a2f251 TS |
1267 | static void s_gpvalue (int); |
1268 | static void s_gpword (int); | |
1269 | static void s_gpdword (int); | |
a3f278e2 | 1270 | static void s_ehword (int); |
17a2f251 TS |
1271 | static void s_cpadd (int); |
1272 | static void s_insn (int); | |
ba92f887 | 1273 | static void s_nan (int); |
17a2f251 TS |
1274 | static void md_obj_begin (void); |
1275 | static void md_obj_end (void); | |
1276 | static void s_mips_ent (int); | |
1277 | static void s_mips_end (int); | |
1278 | static void s_mips_frame (int); | |
1279 | static void s_mips_mask (int reg_type); | |
1280 | static void s_mips_stab (int); | |
1281 | static void s_mips_weakext (int); | |
1282 | static void s_mips_file (int); | |
1283 | static void s_mips_loc (int); | |
1284 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1285 | static int relaxed_branch_length (fragS *, asection *, int); |
df58fc94 RS |
1286 | static int relaxed_micromips_16bit_branch_length (fragS *, asection *, int); |
1287 | static int relaxed_micromips_32bit_branch_length (fragS *, asection *, int); | |
e7af610e NC |
1288 | |
1289 | /* Table and functions used to map between CPU/ISA names, and | |
1290 | ISA levels, and CPU numbers. */ | |
1291 | ||
e972090a NC |
1292 | struct mips_cpu_info |
1293 | { | |
e7af610e | 1294 | const char *name; /* CPU or ISA name. */ |
d16afab6 RS |
1295 | int flags; /* MIPS_CPU_* flags. */ |
1296 | int ase; /* Set of ASEs implemented by the CPU. */ | |
e7af610e NC |
1297 | int isa; /* ISA level. */ |
1298 | int cpu; /* CPU number (default CPU if ISA). */ | |
1299 | }; | |
1300 | ||
ad3fea08 | 1301 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
ad3fea08 | 1302 | |
17a2f251 TS |
1303 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1304 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1305 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 | 1306 | \f |
c31f3936 RS |
1307 | /* Command-line options. */ |
1308 | const char *md_shortopts = "O::g::G:"; | |
1309 | ||
1310 | enum options | |
1311 | { | |
1312 | OPTION_MARCH = OPTION_MD_BASE, | |
1313 | OPTION_MTUNE, | |
1314 | OPTION_MIPS1, | |
1315 | OPTION_MIPS2, | |
1316 | OPTION_MIPS3, | |
1317 | OPTION_MIPS4, | |
1318 | OPTION_MIPS5, | |
1319 | OPTION_MIPS32, | |
1320 | OPTION_MIPS64, | |
1321 | OPTION_MIPS32R2, | |
1322 | OPTION_MIPS64R2, | |
1323 | OPTION_MIPS16, | |
1324 | OPTION_NO_MIPS16, | |
1325 | OPTION_MIPS3D, | |
1326 | OPTION_NO_MIPS3D, | |
1327 | OPTION_MDMX, | |
1328 | OPTION_NO_MDMX, | |
1329 | OPTION_DSP, | |
1330 | OPTION_NO_DSP, | |
1331 | OPTION_MT, | |
1332 | OPTION_NO_MT, | |
1333 | OPTION_VIRT, | |
1334 | OPTION_NO_VIRT, | |
56d438b1 CF |
1335 | OPTION_MSA, |
1336 | OPTION_NO_MSA, | |
c31f3936 RS |
1337 | OPTION_SMARTMIPS, |
1338 | OPTION_NO_SMARTMIPS, | |
1339 | OPTION_DSPR2, | |
1340 | OPTION_NO_DSPR2, | |
1341 | OPTION_EVA, | |
1342 | OPTION_NO_EVA, | |
1343 | OPTION_MICROMIPS, | |
1344 | OPTION_NO_MICROMIPS, | |
1345 | OPTION_MCU, | |
1346 | OPTION_NO_MCU, | |
1347 | OPTION_COMPAT_ARCH_BASE, | |
1348 | OPTION_M4650, | |
1349 | OPTION_NO_M4650, | |
1350 | OPTION_M4010, | |
1351 | OPTION_NO_M4010, | |
1352 | OPTION_M4100, | |
1353 | OPTION_NO_M4100, | |
1354 | OPTION_M3900, | |
1355 | OPTION_NO_M3900, | |
1356 | OPTION_M7000_HILO_FIX, | |
1357 | OPTION_MNO_7000_HILO_FIX, | |
1358 | OPTION_FIX_24K, | |
1359 | OPTION_NO_FIX_24K, | |
a8d14a88 CM |
1360 | OPTION_FIX_RM7000, |
1361 | OPTION_NO_FIX_RM7000, | |
c31f3936 RS |
1362 | OPTION_FIX_LOONGSON2F_JUMP, |
1363 | OPTION_NO_FIX_LOONGSON2F_JUMP, | |
1364 | OPTION_FIX_LOONGSON2F_NOP, | |
1365 | OPTION_NO_FIX_LOONGSON2F_NOP, | |
1366 | OPTION_FIX_VR4120, | |
1367 | OPTION_NO_FIX_VR4120, | |
1368 | OPTION_FIX_VR4130, | |
1369 | OPTION_NO_FIX_VR4130, | |
1370 | OPTION_FIX_CN63XXP1, | |
1371 | OPTION_NO_FIX_CN63XXP1, | |
1372 | OPTION_TRAP, | |
1373 | OPTION_BREAK, | |
1374 | OPTION_EB, | |
1375 | OPTION_EL, | |
1376 | OPTION_FP32, | |
1377 | OPTION_GP32, | |
1378 | OPTION_CONSTRUCT_FLOATS, | |
1379 | OPTION_NO_CONSTRUCT_FLOATS, | |
1380 | OPTION_FP64, | |
1381 | OPTION_GP64, | |
1382 | OPTION_RELAX_BRANCH, | |
1383 | OPTION_NO_RELAX_BRANCH, | |
833794fc MR |
1384 | OPTION_INSN32, |
1385 | OPTION_NO_INSN32, | |
c31f3936 RS |
1386 | OPTION_MSHARED, |
1387 | OPTION_MNO_SHARED, | |
1388 | OPTION_MSYM32, | |
1389 | OPTION_MNO_SYM32, | |
1390 | OPTION_SOFT_FLOAT, | |
1391 | OPTION_HARD_FLOAT, | |
1392 | OPTION_SINGLE_FLOAT, | |
1393 | OPTION_DOUBLE_FLOAT, | |
1394 | OPTION_32, | |
c31f3936 RS |
1395 | OPTION_CALL_SHARED, |
1396 | OPTION_CALL_NONPIC, | |
1397 | OPTION_NON_SHARED, | |
1398 | OPTION_XGOT, | |
1399 | OPTION_MABI, | |
1400 | OPTION_N32, | |
1401 | OPTION_64, | |
1402 | OPTION_MDEBUG, | |
1403 | OPTION_NO_MDEBUG, | |
1404 | OPTION_PDR, | |
1405 | OPTION_NO_PDR, | |
1406 | OPTION_MVXWORKS_PIC, | |
ba92f887 | 1407 | OPTION_NAN, |
c31f3936 RS |
1408 | OPTION_END_OF_ENUM |
1409 | }; | |
1410 | ||
1411 | struct option md_longopts[] = | |
1412 | { | |
1413 | /* Options which specify architecture. */ | |
1414 | {"march", required_argument, NULL, OPTION_MARCH}, | |
1415 | {"mtune", required_argument, NULL, OPTION_MTUNE}, | |
1416 | {"mips0", no_argument, NULL, OPTION_MIPS1}, | |
1417 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
1418 | {"mips2", no_argument, NULL, OPTION_MIPS2}, | |
1419 | {"mips3", no_argument, NULL, OPTION_MIPS3}, | |
1420 | {"mips4", no_argument, NULL, OPTION_MIPS4}, | |
1421 | {"mips5", no_argument, NULL, OPTION_MIPS5}, | |
1422 | {"mips32", no_argument, NULL, OPTION_MIPS32}, | |
1423 | {"mips64", no_argument, NULL, OPTION_MIPS64}, | |
1424 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, | |
1425 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, | |
1426 | ||
1427 | /* Options which specify Application Specific Extensions (ASEs). */ | |
1428 | {"mips16", no_argument, NULL, OPTION_MIPS16}, | |
1429 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, | |
1430 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, | |
1431 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, | |
1432 | {"mdmx", no_argument, NULL, OPTION_MDMX}, | |
1433 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, | |
1434 | {"mdsp", no_argument, NULL, OPTION_DSP}, | |
1435 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, | |
1436 | {"mmt", no_argument, NULL, OPTION_MT}, | |
1437 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, | |
1438 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, | |
1439 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, | |
1440 | {"mdspr2", no_argument, NULL, OPTION_DSPR2}, | |
1441 | {"mno-dspr2", no_argument, NULL, OPTION_NO_DSPR2}, | |
1442 | {"meva", no_argument, NULL, OPTION_EVA}, | |
1443 | {"mno-eva", no_argument, NULL, OPTION_NO_EVA}, | |
1444 | {"mmicromips", no_argument, NULL, OPTION_MICROMIPS}, | |
1445 | {"mno-micromips", no_argument, NULL, OPTION_NO_MICROMIPS}, | |
1446 | {"mmcu", no_argument, NULL, OPTION_MCU}, | |
1447 | {"mno-mcu", no_argument, NULL, OPTION_NO_MCU}, | |
1448 | {"mvirt", no_argument, NULL, OPTION_VIRT}, | |
1449 | {"mno-virt", no_argument, NULL, OPTION_NO_VIRT}, | |
56d438b1 CF |
1450 | {"mmsa", no_argument, NULL, OPTION_MSA}, |
1451 | {"mno-msa", no_argument, NULL, OPTION_NO_MSA}, | |
c31f3936 RS |
1452 | |
1453 | /* Old-style architecture options. Don't add more of these. */ | |
1454 | {"m4650", no_argument, NULL, OPTION_M4650}, | |
1455 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, | |
1456 | {"m4010", no_argument, NULL, OPTION_M4010}, | |
1457 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, | |
1458 | {"m4100", no_argument, NULL, OPTION_M4100}, | |
1459 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, | |
1460 | {"m3900", no_argument, NULL, OPTION_M3900}, | |
1461 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, | |
1462 | ||
1463 | /* Options which enable bug fixes. */ | |
1464 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, | |
1465 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
1466 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
1467 | {"mfix-loongson2f-jump", no_argument, NULL, OPTION_FIX_LOONGSON2F_JUMP}, | |
1468 | {"mno-fix-loongson2f-jump", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_JUMP}, | |
1469 | {"mfix-loongson2f-nop", no_argument, NULL, OPTION_FIX_LOONGSON2F_NOP}, | |
1470 | {"mno-fix-loongson2f-nop", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_NOP}, | |
1471 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, | |
1472 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
1473 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, | |
1474 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
1475 | {"mfix-24k", no_argument, NULL, OPTION_FIX_24K}, | |
1476 | {"mno-fix-24k", no_argument, NULL, OPTION_NO_FIX_24K}, | |
a8d14a88 CM |
1477 | {"mfix-rm7000", no_argument, NULL, OPTION_FIX_RM7000}, |
1478 | {"mno-fix-rm7000", no_argument, NULL, OPTION_NO_FIX_RM7000}, | |
c31f3936 RS |
1479 | {"mfix-cn63xxp1", no_argument, NULL, OPTION_FIX_CN63XXP1}, |
1480 | {"mno-fix-cn63xxp1", no_argument, NULL, OPTION_NO_FIX_CN63XXP1}, | |
1481 | ||
1482 | /* Miscellaneous options. */ | |
1483 | {"trap", no_argument, NULL, OPTION_TRAP}, | |
1484 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
1485 | {"break", no_argument, NULL, OPTION_BREAK}, | |
1486 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
1487 | {"EB", no_argument, NULL, OPTION_EB}, | |
1488 | {"EL", no_argument, NULL, OPTION_EL}, | |
1489 | {"mfp32", no_argument, NULL, OPTION_FP32}, | |
1490 | {"mgp32", no_argument, NULL, OPTION_GP32}, | |
1491 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, | |
1492 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, | |
1493 | {"mfp64", no_argument, NULL, OPTION_FP64}, | |
1494 | {"mgp64", no_argument, NULL, OPTION_GP64}, | |
1495 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, | |
1496 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
833794fc MR |
1497 | {"minsn32", no_argument, NULL, OPTION_INSN32}, |
1498 | {"mno-insn32", no_argument, NULL, OPTION_NO_INSN32}, | |
c31f3936 RS |
1499 | {"mshared", no_argument, NULL, OPTION_MSHARED}, |
1500 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
1501 | {"msym32", no_argument, NULL, OPTION_MSYM32}, | |
1502 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
1503 | {"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT}, | |
1504 | {"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT}, | |
1505 | {"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT}, | |
1506 | {"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT}, | |
1507 | ||
1508 | /* Strictly speaking this next option is ELF specific, | |
1509 | but we allow it for other ports as well in order to | |
1510 | make testing easier. */ | |
1511 | {"32", no_argument, NULL, OPTION_32}, | |
1512 | ||
1513 | /* ELF-specific options. */ | |
c31f3936 RS |
1514 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
1515 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
1516 | {"call_nonpic", no_argument, NULL, OPTION_CALL_NONPIC}, | |
1517 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, | |
1518 | {"xgot", no_argument, NULL, OPTION_XGOT}, | |
1519 | {"mabi", required_argument, NULL, OPTION_MABI}, | |
1520 | {"n32", no_argument, NULL, OPTION_N32}, | |
1521 | {"64", no_argument, NULL, OPTION_64}, | |
1522 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, | |
1523 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, | |
1524 | {"mpdr", no_argument, NULL, OPTION_PDR}, | |
1525 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, | |
1526 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, | |
ba92f887 | 1527 | {"mnan", required_argument, NULL, OPTION_NAN}, |
c31f3936 RS |
1528 | |
1529 | {NULL, no_argument, NULL, 0} | |
1530 | }; | |
1531 | size_t md_longopts_size = sizeof (md_longopts); | |
1532 | \f | |
c6278170 RS |
1533 | /* Information about either an Application Specific Extension or an |
1534 | optional architecture feature that, for simplicity, we treat in the | |
1535 | same way as an ASE. */ | |
1536 | struct mips_ase | |
1537 | { | |
1538 | /* The name of the ASE, used in both the command-line and .set options. */ | |
1539 | const char *name; | |
1540 | ||
1541 | /* The associated ASE_* flags. If the ASE is available on both 32-bit | |
1542 | and 64-bit architectures, the flags here refer to the subset that | |
1543 | is available on both. */ | |
1544 | unsigned int flags; | |
1545 | ||
1546 | /* The ASE_* flag used for instructions that are available on 64-bit | |
1547 | architectures but that are not included in FLAGS. */ | |
1548 | unsigned int flags64; | |
1549 | ||
1550 | /* The command-line options that turn the ASE on and off. */ | |
1551 | int option_on; | |
1552 | int option_off; | |
1553 | ||
1554 | /* The minimum required architecture revisions for MIPS32, MIPS64, | |
1555 | microMIPS32 and microMIPS64, or -1 if the extension isn't supported. */ | |
1556 | int mips32_rev; | |
1557 | int mips64_rev; | |
1558 | int micromips32_rev; | |
1559 | int micromips64_rev; | |
1560 | }; | |
1561 | ||
1562 | /* A table of all supported ASEs. */ | |
1563 | static const struct mips_ase mips_ases[] = { | |
1564 | { "dsp", ASE_DSP, ASE_DSP64, | |
1565 | OPTION_DSP, OPTION_NO_DSP, | |
1566 | 2, 2, 2, 2 }, | |
1567 | ||
1568 | { "dspr2", ASE_DSP | ASE_DSPR2, 0, | |
1569 | OPTION_DSPR2, OPTION_NO_DSPR2, | |
1570 | 2, 2, 2, 2 }, | |
1571 | ||
1572 | { "eva", ASE_EVA, 0, | |
1573 | OPTION_EVA, OPTION_NO_EVA, | |
1574 | 2, 2, 2, 2 }, | |
1575 | ||
1576 | { "mcu", ASE_MCU, 0, | |
1577 | OPTION_MCU, OPTION_NO_MCU, | |
1578 | 2, 2, 2, 2 }, | |
1579 | ||
1580 | /* Deprecated in MIPS64r5, but we don't implement that yet. */ | |
1581 | { "mdmx", ASE_MDMX, 0, | |
1582 | OPTION_MDMX, OPTION_NO_MDMX, | |
1583 | -1, 1, -1, -1 }, | |
1584 | ||
1585 | /* Requires 64-bit FPRs, so the minimum MIPS32 revision is 2. */ | |
1586 | { "mips3d", ASE_MIPS3D, 0, | |
1587 | OPTION_MIPS3D, OPTION_NO_MIPS3D, | |
1588 | 2, 1, -1, -1 }, | |
1589 | ||
1590 | { "mt", ASE_MT, 0, | |
1591 | OPTION_MT, OPTION_NO_MT, | |
1592 | 2, 2, -1, -1 }, | |
1593 | ||
1594 | { "smartmips", ASE_SMARTMIPS, 0, | |
1595 | OPTION_SMARTMIPS, OPTION_NO_SMARTMIPS, | |
1596 | 1, -1, -1, -1 }, | |
1597 | ||
1598 | { "virt", ASE_VIRT, ASE_VIRT64, | |
1599 | OPTION_VIRT, OPTION_NO_VIRT, | |
56d438b1 CF |
1600 | 2, 2, 2, 2 }, |
1601 | ||
1602 | { "msa", ASE_MSA, ASE_MSA64, | |
1603 | OPTION_MSA, OPTION_NO_MSA, | |
c6278170 RS |
1604 | 2, 2, 2, 2 } |
1605 | }; | |
1606 | ||
1607 | /* The set of ASEs that require -mfp64. */ | |
1608 | #define FP64_ASES (ASE_MIPS3D | ASE_MDMX) | |
1609 | ||
1610 | /* Groups of ASE_* flags that represent different revisions of an ASE. */ | |
1611 | static const unsigned int mips_ase_groups[] = { | |
1612 | ASE_DSP | ASE_DSPR2 | |
1613 | }; | |
1614 | \f | |
252b5132 RH |
1615 | /* Pseudo-op table. |
1616 | ||
1617 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1618 | should be defined here, but are currently unsupported: .alias, | |
1619 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1620 | ||
1621 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1622 | specific to the type of debugging information being generated, and | |
1623 | should be defined by the object format: .aent, .begin, .bend, | |
1624 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1625 | .vreg. | |
1626 | ||
1627 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1628 | not MIPS CPU specific, but are also not specific to the object file | |
1629 | format. This file is probably the best place to define them, but | |
d84bcf09 | 1630 | they are not currently supported: .asm0, .endr, .lab, .struct. */ |
252b5132 | 1631 | |
e972090a NC |
1632 | static const pseudo_typeS mips_pseudo_table[] = |
1633 | { | |
beae10d5 | 1634 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1635 | {"option", s_option, 0}, |
1636 | {"set", s_mipsset, 0}, | |
1637 | {"rdata", s_change_sec, 'r'}, | |
1638 | {"sdata", s_change_sec, 's'}, | |
1639 | {"livereg", s_ignore, 0}, | |
1640 | {"abicalls", s_abicalls, 0}, | |
1641 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1642 | {"cpsetup", s_cpsetup, 0}, |
1643 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1644 | {"cprestore", s_cprestore, 0}, |
6478892d | 1645 | {"cpreturn", s_cpreturn, 0}, |
741d6ea8 JM |
1646 | {"dtprelword", s_dtprelword, 0}, |
1647 | {"dtpreldword", s_dtpreldword, 0}, | |
d0f13682 CLT |
1648 | {"tprelword", s_tprelword, 0}, |
1649 | {"tpreldword", s_tpreldword, 0}, | |
6478892d | 1650 | {"gpvalue", s_gpvalue, 0}, |
252b5132 | 1651 | {"gpword", s_gpword, 0}, |
10181a0d | 1652 | {"gpdword", s_gpdword, 0}, |
a3f278e2 | 1653 | {"ehword", s_ehword, 0}, |
252b5132 RH |
1654 | {"cpadd", s_cpadd, 0}, |
1655 | {"insn", s_insn, 0}, | |
ba92f887 | 1656 | {"nan", s_nan, 0}, |
252b5132 | 1657 | |
beae10d5 | 1658 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 | 1659 | chips. */ |
38a57ae7 | 1660 | {"asciiz", stringer, 8 + 1}, |
252b5132 RH |
1661 | {"bss", s_change_sec, 'b'}, |
1662 | {"err", s_err, 0}, | |
1663 | {"half", s_cons, 1}, | |
1664 | {"dword", s_cons, 3}, | |
1665 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1666 | {"origin", s_org, 0}, |
1667 | {"repeat", s_rept, 0}, | |
252b5132 | 1668 | |
998b3c36 MR |
1669 | /* For MIPS this is non-standard, but we define it for consistency. */ |
1670 | {"sbss", s_change_sec, 'B'}, | |
1671 | ||
beae10d5 | 1672 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1673 | here for one reason or another. */ |
1674 | {"align", s_align, 0}, | |
1675 | {"byte", s_cons, 0}, | |
1676 | {"data", s_change_sec, 'd'}, | |
1677 | {"double", s_float_cons, 'd'}, | |
1678 | {"float", s_float_cons, 'f'}, | |
1679 | {"globl", s_mips_globl, 0}, | |
1680 | {"global", s_mips_globl, 0}, | |
1681 | {"hword", s_cons, 1}, | |
1682 | {"int", s_cons, 2}, | |
1683 | {"long", s_cons, 2}, | |
1684 | {"octa", s_cons, 4}, | |
1685 | {"quad", s_cons, 3}, | |
cca86cc8 | 1686 | {"section", s_change_section, 0}, |
252b5132 RH |
1687 | {"short", s_cons, 1}, |
1688 | {"single", s_float_cons, 'f'}, | |
754e2bb9 | 1689 | {"stabd", s_mips_stab, 'd'}, |
252b5132 | 1690 | {"stabn", s_mips_stab, 'n'}, |
754e2bb9 | 1691 | {"stabs", s_mips_stab, 's'}, |
252b5132 RH |
1692 | {"text", s_change_sec, 't'}, |
1693 | {"word", s_cons, 2}, | |
add56521 | 1694 | |
add56521 | 1695 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1696 | |
43841e91 | 1697 | { NULL, NULL, 0 }, |
252b5132 RH |
1698 | }; |
1699 | ||
e972090a NC |
1700 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1701 | { | |
beae10d5 KH |
1702 | /* These pseudo-ops should be defined by the object file format. |
1703 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1704 | {"aent", s_mips_ent, 1}, |
1705 | {"bgnb", s_ignore, 0}, | |
1706 | {"end", s_mips_end, 0}, | |
1707 | {"endb", s_ignore, 0}, | |
1708 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1709 | {"file", s_mips_file, 0}, |
252b5132 RH |
1710 | {"fmask", s_mips_mask, 'F'}, |
1711 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1712 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1713 | {"mask", s_mips_mask, 'R'}, |
1714 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1715 | { NULL, NULL, 0 }, |
252b5132 RH |
1716 | }; |
1717 | ||
3ae8dd8d MR |
1718 | /* Export the ABI address size for use by TC_ADDRESS_BYTES for the |
1719 | purpose of the `.dc.a' internal pseudo-op. */ | |
1720 | ||
1721 | int | |
1722 | mips_address_bytes (void) | |
1723 | { | |
1724 | return HAVE_64BIT_ADDRESSES ? 8 : 4; | |
1725 | } | |
1726 | ||
17a2f251 | 1727 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1728 | |
1729 | void | |
17a2f251 | 1730 | mips_pop_insert (void) |
252b5132 RH |
1731 | { |
1732 | pop_insert (mips_pseudo_table); | |
1733 | if (! ECOFF_DEBUGGING) | |
1734 | pop_insert (mips_nonecoff_pseudo_table); | |
1735 | } | |
1736 | \f | |
1737 | /* Symbols labelling the current insn. */ | |
1738 | ||
e972090a NC |
1739 | struct insn_label_list |
1740 | { | |
252b5132 RH |
1741 | struct insn_label_list *next; |
1742 | symbolS *label; | |
1743 | }; | |
1744 | ||
252b5132 | 1745 | static struct insn_label_list *free_insn_labels; |
742a56fe | 1746 | #define label_list tc_segment_info_data.labels |
252b5132 | 1747 | |
17a2f251 | 1748 | static void mips_clear_insn_labels (void); |
df58fc94 RS |
1749 | static void mips_mark_labels (void); |
1750 | static void mips_compressed_mark_labels (void); | |
252b5132 RH |
1751 | |
1752 | static inline void | |
17a2f251 | 1753 | mips_clear_insn_labels (void) |
252b5132 RH |
1754 | { |
1755 | register struct insn_label_list **pl; | |
a8dbcb85 | 1756 | segment_info_type *si; |
252b5132 | 1757 | |
a8dbcb85 TS |
1758 | if (now_seg) |
1759 | { | |
1760 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1761 | ; | |
1762 | ||
1763 | si = seg_info (now_seg); | |
1764 | *pl = si->label_list; | |
1765 | si->label_list = NULL; | |
1766 | } | |
252b5132 | 1767 | } |
a8dbcb85 | 1768 | |
df58fc94 RS |
1769 | /* Mark instruction labels in MIPS16/microMIPS mode. */ |
1770 | ||
1771 | static inline void | |
1772 | mips_mark_labels (void) | |
1773 | { | |
1774 | if (HAVE_CODE_COMPRESSION) | |
1775 | mips_compressed_mark_labels (); | |
1776 | } | |
252b5132 RH |
1777 | \f |
1778 | static char *expr_end; | |
1779 | ||
e423441d | 1780 | /* An expression in a macro instruction. This is set by mips_ip and |
b0e6f033 | 1781 | mips16_ip and when populated is always an O_constant. */ |
252b5132 RH |
1782 | |
1783 | static expressionS imm_expr; | |
252b5132 | 1784 | |
77bd4346 RS |
1785 | /* The relocatable field in an instruction and the relocs associated |
1786 | with it. These variables are used for instructions like LUI and | |
1787 | JAL as well as true offsets. They are also used for address | |
1788 | operands in macros. */ | |
252b5132 | 1789 | |
77bd4346 | 1790 | static expressionS offset_expr; |
f6688943 TS |
1791 | static bfd_reloc_code_real_type offset_reloc[3] |
1792 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1793 | |
df58fc94 RS |
1794 | /* This is set to the resulting size of the instruction to be produced |
1795 | by mips16_ip if an explicit extension is used or by mips_ip if an | |
1796 | explicit size is supplied. */ | |
252b5132 | 1797 | |
df58fc94 | 1798 | static unsigned int forced_insn_length; |
252b5132 | 1799 | |
e1b47bd5 RS |
1800 | /* True if we are assembling an instruction. All dot symbols defined during |
1801 | this time should be treated as code labels. */ | |
1802 | ||
1803 | static bfd_boolean mips_assembling_insn; | |
1804 | ||
ecb4347a DJ |
1805 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1806 | ECOFF debugging. */ | |
252b5132 RH |
1807 | |
1808 | static segT pdr_seg; | |
252b5132 | 1809 | |
e013f690 TS |
1810 | /* The default target format to use. */ |
1811 | ||
aeffff67 RS |
1812 | #if defined (TE_FreeBSD) |
1813 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips-freebsd" | |
1814 | #elif defined (TE_TMIPS) | |
1815 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips" | |
1816 | #else | |
1817 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX ENDIAN "mips" | |
1818 | #endif | |
1819 | ||
e013f690 | 1820 | const char * |
17a2f251 | 1821 | mips_target_format (void) |
e013f690 TS |
1822 | { |
1823 | switch (OUTPUT_FLAVOR) | |
1824 | { | |
e013f690 | 1825 | case bfd_target_elf_flavour: |
0a44bf69 RS |
1826 | #ifdef TE_VXWORKS |
1827 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1828 | return (target_big_endian | |
1829 | ? "elf32-bigmips-vxworks" | |
1830 | : "elf32-littlemips-vxworks"); | |
1831 | #endif | |
e013f690 | 1832 | return (target_big_endian |
cfe86eaa | 1833 | ? (HAVE_64BIT_OBJECTS |
aeffff67 | 1834 | ? ELF_TARGET ("elf64-", "big") |
cfe86eaa | 1835 | : (HAVE_NEWABI |
aeffff67 RS |
1836 | ? ELF_TARGET ("elf32-n", "big") |
1837 | : ELF_TARGET ("elf32-", "big"))) | |
cfe86eaa | 1838 | : (HAVE_64BIT_OBJECTS |
aeffff67 | 1839 | ? ELF_TARGET ("elf64-", "little") |
cfe86eaa | 1840 | : (HAVE_NEWABI |
aeffff67 RS |
1841 | ? ELF_TARGET ("elf32-n", "little") |
1842 | : ELF_TARGET ("elf32-", "little")))); | |
e013f690 TS |
1843 | default: |
1844 | abort (); | |
1845 | return NULL; | |
1846 | } | |
1847 | } | |
1848 | ||
c6278170 RS |
1849 | /* Return the ISA revision that is currently in use, or 0 if we are |
1850 | generating code for MIPS V or below. */ | |
1851 | ||
1852 | static int | |
1853 | mips_isa_rev (void) | |
1854 | { | |
1855 | if (mips_opts.isa == ISA_MIPS32R2 || mips_opts.isa == ISA_MIPS64R2) | |
1856 | return 2; | |
1857 | ||
1858 | /* microMIPS implies revision 2 or above. */ | |
1859 | if (mips_opts.micromips) | |
1860 | return 2; | |
1861 | ||
1862 | if (mips_opts.isa == ISA_MIPS32 || mips_opts.isa == ISA_MIPS64) | |
1863 | return 1; | |
1864 | ||
1865 | return 0; | |
1866 | } | |
1867 | ||
1868 | /* Return the mask of all ASEs that are revisions of those in FLAGS. */ | |
1869 | ||
1870 | static unsigned int | |
1871 | mips_ase_mask (unsigned int flags) | |
1872 | { | |
1873 | unsigned int i; | |
1874 | ||
1875 | for (i = 0; i < ARRAY_SIZE (mips_ase_groups); i++) | |
1876 | if (flags & mips_ase_groups[i]) | |
1877 | flags |= mips_ase_groups[i]; | |
1878 | return flags; | |
1879 | } | |
1880 | ||
1881 | /* Check whether the current ISA supports ASE. Issue a warning if | |
1882 | appropriate. */ | |
1883 | ||
1884 | static void | |
1885 | mips_check_isa_supports_ase (const struct mips_ase *ase) | |
1886 | { | |
1887 | const char *base; | |
1888 | int min_rev, size; | |
1889 | static unsigned int warned_isa; | |
1890 | static unsigned int warned_fp32; | |
1891 | ||
1892 | if (ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
1893 | min_rev = mips_opts.micromips ? ase->micromips64_rev : ase->mips64_rev; | |
1894 | else | |
1895 | min_rev = mips_opts.micromips ? ase->micromips32_rev : ase->mips32_rev; | |
1896 | if ((min_rev < 0 || mips_isa_rev () < min_rev) | |
1897 | && (warned_isa & ase->flags) != ase->flags) | |
1898 | { | |
1899 | warned_isa |= ase->flags; | |
1900 | base = mips_opts.micromips ? "microMIPS" : "MIPS"; | |
1901 | size = ISA_HAS_64BIT_REGS (mips_opts.isa) ? 64 : 32; | |
1902 | if (min_rev < 0) | |
1661c76c | 1903 | as_warn (_("the %d-bit %s architecture does not support the" |
c6278170 RS |
1904 | " `%s' extension"), size, base, ase->name); |
1905 | else | |
1661c76c | 1906 | as_warn (_("the `%s' extension requires %s%d revision %d or greater"), |
c6278170 RS |
1907 | ase->name, base, size, min_rev); |
1908 | } | |
1909 | if ((ase->flags & FP64_ASES) | |
1910 | && mips_opts.fp32 | |
1911 | && (warned_fp32 & ase->flags) != ase->flags) | |
1912 | { | |
1913 | warned_fp32 |= ase->flags; | |
1661c76c | 1914 | as_warn (_("the `%s' extension requires 64-bit FPRs"), ase->name); |
c6278170 RS |
1915 | } |
1916 | } | |
1917 | ||
1918 | /* Check all enabled ASEs to see whether they are supported by the | |
1919 | chosen architecture. */ | |
1920 | ||
1921 | static void | |
1922 | mips_check_isa_supports_ases (void) | |
1923 | { | |
1924 | unsigned int i, mask; | |
1925 | ||
1926 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
1927 | { | |
1928 | mask = mips_ase_mask (mips_ases[i].flags); | |
1929 | if ((mips_opts.ase & mask) == mips_ases[i].flags) | |
1930 | mips_check_isa_supports_ase (&mips_ases[i]); | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | /* Set the state of ASE to ENABLED_P. Return the mask of ASE_* flags | |
1935 | that were affected. */ | |
1936 | ||
1937 | static unsigned int | |
1938 | mips_set_ase (const struct mips_ase *ase, bfd_boolean enabled_p) | |
1939 | { | |
1940 | unsigned int mask; | |
1941 | ||
1942 | mask = mips_ase_mask (ase->flags); | |
1943 | mips_opts.ase &= ~mask; | |
1944 | if (enabled_p) | |
1945 | mips_opts.ase |= ase->flags; | |
1946 | return mask; | |
1947 | } | |
1948 | ||
1949 | /* Return the ASE called NAME, or null if none. */ | |
1950 | ||
1951 | static const struct mips_ase * | |
1952 | mips_lookup_ase (const char *name) | |
1953 | { | |
1954 | unsigned int i; | |
1955 | ||
1956 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
1957 | if (strcmp (name, mips_ases[i].name) == 0) | |
1958 | return &mips_ases[i]; | |
1959 | return NULL; | |
1960 | } | |
1961 | ||
df58fc94 RS |
1962 | /* Return the length of a microMIPS instruction in bytes. If bits of |
1963 | the mask beyond the low 16 are 0, then it is a 16-bit instruction. | |
1964 | Otherwise assume a 32-bit instruction; 48-bit instructions (0x1f | |
1965 | major opcode) will require further modifications to the opcode | |
1966 | table. */ | |
1967 | ||
1968 | static inline unsigned int | |
1969 | micromips_insn_length (const struct mips_opcode *mo) | |
1970 | { | |
1971 | return (mo->mask >> 16) == 0 ? 2 : 4; | |
1972 | } | |
1973 | ||
5c04167a RS |
1974 | /* Return the length of MIPS16 instruction OPCODE. */ |
1975 | ||
1976 | static inline unsigned int | |
1977 | mips16_opcode_length (unsigned long opcode) | |
1978 | { | |
1979 | return (opcode >> 16) == 0 ? 2 : 4; | |
1980 | } | |
1981 | ||
1e915849 RS |
1982 | /* Return the length of instruction INSN. */ |
1983 | ||
1984 | static inline unsigned int | |
1985 | insn_length (const struct mips_cl_insn *insn) | |
1986 | { | |
df58fc94 RS |
1987 | if (mips_opts.micromips) |
1988 | return micromips_insn_length (insn->insn_mo); | |
1989 | else if (mips_opts.mips16) | |
5c04167a | 1990 | return mips16_opcode_length (insn->insn_opcode); |
df58fc94 | 1991 | else |
1e915849 | 1992 | return 4; |
1e915849 RS |
1993 | } |
1994 | ||
1995 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
1996 | ||
1997 | static void | |
1998 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
1999 | { | |
2000 | size_t i; | |
2001 | ||
2002 | insn->insn_mo = mo; | |
1e915849 RS |
2003 | insn->insn_opcode = mo->match; |
2004 | insn->frag = NULL; | |
2005 | insn->where = 0; | |
2006 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
2007 | insn->fixp[i] = NULL; | |
2008 | insn->fixed_p = (mips_opts.noreorder > 0); | |
2009 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
2010 | insn->mips16_absolute_jump_p = 0; | |
15be625d | 2011 | insn->complete_p = 0; |
e407c74b | 2012 | insn->cleared_p = 0; |
1e915849 RS |
2013 | } |
2014 | ||
fc76e730 RS |
2015 | /* Get a list of all the operands in INSN. */ |
2016 | ||
2017 | static const struct mips_operand_array * | |
2018 | insn_operands (const struct mips_cl_insn *insn) | |
2019 | { | |
2020 | if (insn->insn_mo >= &mips_opcodes[0] | |
2021 | && insn->insn_mo < &mips_opcodes[NUMOPCODES]) | |
2022 | return &mips_operands[insn->insn_mo - &mips_opcodes[0]]; | |
2023 | ||
2024 | if (insn->insn_mo >= &mips16_opcodes[0] | |
2025 | && insn->insn_mo < &mips16_opcodes[bfd_mips16_num_opcodes]) | |
2026 | return &mips16_operands[insn->insn_mo - &mips16_opcodes[0]]; | |
2027 | ||
2028 | if (insn->insn_mo >= µmips_opcodes[0] | |
2029 | && insn->insn_mo < µmips_opcodes[bfd_micromips_num_opcodes]) | |
2030 | return µmips_operands[insn->insn_mo - µmips_opcodes[0]]; | |
2031 | ||
2032 | abort (); | |
2033 | } | |
2034 | ||
2035 | /* Get a description of operand OPNO of INSN. */ | |
2036 | ||
2037 | static const struct mips_operand * | |
2038 | insn_opno (const struct mips_cl_insn *insn, unsigned opno) | |
2039 | { | |
2040 | const struct mips_operand_array *operands; | |
2041 | ||
2042 | operands = insn_operands (insn); | |
2043 | if (opno >= MAX_OPERANDS || !operands->operand[opno]) | |
2044 | abort (); | |
2045 | return operands->operand[opno]; | |
2046 | } | |
2047 | ||
e077a1c8 RS |
2048 | /* Install UVAL as the value of OPERAND in INSN. */ |
2049 | ||
2050 | static inline void | |
2051 | insn_insert_operand (struct mips_cl_insn *insn, | |
2052 | const struct mips_operand *operand, unsigned int uval) | |
2053 | { | |
2054 | insn->insn_opcode = mips_insert_operand (operand, insn->insn_opcode, uval); | |
2055 | } | |
2056 | ||
fc76e730 RS |
2057 | /* Extract the value of OPERAND from INSN. */ |
2058 | ||
2059 | static inline unsigned | |
2060 | insn_extract_operand (const struct mips_cl_insn *insn, | |
2061 | const struct mips_operand *operand) | |
2062 | { | |
2063 | return mips_extract_operand (operand, insn->insn_opcode); | |
2064 | } | |
2065 | ||
df58fc94 | 2066 | /* Record the current MIPS16/microMIPS mode in now_seg. */ |
742a56fe RS |
2067 | |
2068 | static void | |
df58fc94 | 2069 | mips_record_compressed_mode (void) |
742a56fe RS |
2070 | { |
2071 | segment_info_type *si; | |
2072 | ||
2073 | si = seg_info (now_seg); | |
2074 | if (si->tc_segment_info_data.mips16 != mips_opts.mips16) | |
2075 | si->tc_segment_info_data.mips16 = mips_opts.mips16; | |
df58fc94 RS |
2076 | if (si->tc_segment_info_data.micromips != mips_opts.micromips) |
2077 | si->tc_segment_info_data.micromips = mips_opts.micromips; | |
742a56fe RS |
2078 | } |
2079 | ||
4d68580a RS |
2080 | /* Read a standard MIPS instruction from BUF. */ |
2081 | ||
2082 | static unsigned long | |
2083 | read_insn (char *buf) | |
2084 | { | |
2085 | if (target_big_endian) | |
2086 | return bfd_getb32 ((bfd_byte *) buf); | |
2087 | else | |
2088 | return bfd_getl32 ((bfd_byte *) buf); | |
2089 | } | |
2090 | ||
2091 | /* Write standard MIPS instruction INSN to BUF. Return a pointer to | |
2092 | the next byte. */ | |
2093 | ||
2094 | static char * | |
2095 | write_insn (char *buf, unsigned int insn) | |
2096 | { | |
2097 | md_number_to_chars (buf, insn, 4); | |
2098 | return buf + 4; | |
2099 | } | |
2100 | ||
2101 | /* Read a microMIPS or MIPS16 opcode from BUF, given that it | |
2102 | has length LENGTH. */ | |
2103 | ||
2104 | static unsigned long | |
2105 | read_compressed_insn (char *buf, unsigned int length) | |
2106 | { | |
2107 | unsigned long insn; | |
2108 | unsigned int i; | |
2109 | ||
2110 | insn = 0; | |
2111 | for (i = 0; i < length; i += 2) | |
2112 | { | |
2113 | insn <<= 16; | |
2114 | if (target_big_endian) | |
2115 | insn |= bfd_getb16 ((char *) buf); | |
2116 | else | |
2117 | insn |= bfd_getl16 ((char *) buf); | |
2118 | buf += 2; | |
2119 | } | |
2120 | return insn; | |
2121 | } | |
2122 | ||
5c04167a RS |
2123 | /* Write microMIPS or MIPS16 instruction INSN to BUF, given that the |
2124 | instruction is LENGTH bytes long. Return a pointer to the next byte. */ | |
2125 | ||
2126 | static char * | |
2127 | write_compressed_insn (char *buf, unsigned int insn, unsigned int length) | |
2128 | { | |
2129 | unsigned int i; | |
2130 | ||
2131 | for (i = 0; i < length; i += 2) | |
2132 | md_number_to_chars (buf + i, insn >> ((length - i - 2) * 8), 2); | |
2133 | return buf + length; | |
2134 | } | |
2135 | ||
1e915849 RS |
2136 | /* Install INSN at the location specified by its "frag" and "where" fields. */ |
2137 | ||
2138 | static void | |
2139 | install_insn (const struct mips_cl_insn *insn) | |
2140 | { | |
2141 | char *f = insn->frag->fr_literal + insn->where; | |
5c04167a RS |
2142 | if (HAVE_CODE_COMPRESSION) |
2143 | write_compressed_insn (f, insn->insn_opcode, insn_length (insn)); | |
1e915849 | 2144 | else |
4d68580a | 2145 | write_insn (f, insn->insn_opcode); |
df58fc94 | 2146 | mips_record_compressed_mode (); |
1e915849 RS |
2147 | } |
2148 | ||
2149 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
2150 | and install the opcode in the new location. */ | |
2151 | ||
2152 | static void | |
2153 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
2154 | { | |
2155 | size_t i; | |
2156 | ||
2157 | insn->frag = frag; | |
2158 | insn->where = where; | |
2159 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
2160 | if (insn->fixp[i] != NULL) | |
2161 | { | |
2162 | insn->fixp[i]->fx_frag = frag; | |
2163 | insn->fixp[i]->fx_where = where; | |
2164 | } | |
2165 | install_insn (insn); | |
2166 | } | |
2167 | ||
2168 | /* Add INSN to the end of the output. */ | |
2169 | ||
2170 | static void | |
2171 | add_fixed_insn (struct mips_cl_insn *insn) | |
2172 | { | |
2173 | char *f = frag_more (insn_length (insn)); | |
2174 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
2175 | } | |
2176 | ||
2177 | /* Start a variant frag and move INSN to the start of the variant part, | |
2178 | marking it as fixed. The other arguments are as for frag_var. */ | |
2179 | ||
2180 | static void | |
2181 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
2182 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
2183 | { | |
2184 | frag_grow (max_chars); | |
2185 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
2186 | insn->fixed_p = 1; | |
2187 | frag_var (rs_machine_dependent, max_chars, var, | |
2188 | subtype, symbol, offset, NULL); | |
2189 | } | |
2190 | ||
2191 | /* Insert N copies of INSN into the history buffer, starting at | |
2192 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
2193 | ||
2194 | static void | |
2195 | insert_into_history (unsigned int first, unsigned int n, | |
2196 | const struct mips_cl_insn *insn) | |
2197 | { | |
2198 | if (mips_relax.sequence != 2) | |
2199 | { | |
2200 | unsigned int i; | |
2201 | ||
2202 | for (i = ARRAY_SIZE (history); i-- > first;) | |
2203 | if (i >= first + n) | |
2204 | history[i] = history[i - n]; | |
2205 | else | |
2206 | history[i] = *insn; | |
2207 | } | |
2208 | } | |
2209 | ||
e3de51ce RS |
2210 | /* Clear the error in insn_error. */ |
2211 | ||
2212 | static void | |
2213 | clear_insn_error (void) | |
2214 | { | |
2215 | memset (&insn_error, 0, sizeof (insn_error)); | |
2216 | } | |
2217 | ||
2218 | /* Possibly record error message MSG for the current instruction. | |
2219 | If the error is about a particular argument, ARGNUM is the 1-based | |
2220 | number of that argument, otherwise it is 0. FORMAT is the format | |
2221 | of MSG. Return true if MSG was used, false if the current message | |
2222 | was kept. */ | |
2223 | ||
2224 | static bfd_boolean | |
2225 | set_insn_error_format (int argnum, enum mips_insn_error_format format, | |
2226 | const char *msg) | |
2227 | { | |
2228 | if (argnum == 0) | |
2229 | { | |
2230 | /* Give priority to errors against specific arguments, and to | |
2231 | the first whole-instruction message. */ | |
2232 | if (insn_error.msg) | |
2233 | return FALSE; | |
2234 | } | |
2235 | else | |
2236 | { | |
2237 | /* Keep insn_error if it is against a later argument. */ | |
2238 | if (argnum < insn_error.min_argnum) | |
2239 | return FALSE; | |
2240 | ||
2241 | /* If both errors are against the same argument but are different, | |
2242 | give up on reporting a specific error for this argument. | |
2243 | See the comment about mips_insn_error for details. */ | |
2244 | if (argnum == insn_error.min_argnum | |
2245 | && insn_error.msg | |
2246 | && strcmp (insn_error.msg, msg) != 0) | |
2247 | { | |
2248 | insn_error.msg = 0; | |
2249 | insn_error.min_argnum += 1; | |
2250 | return FALSE; | |
2251 | } | |
2252 | } | |
2253 | insn_error.min_argnum = argnum; | |
2254 | insn_error.format = format; | |
2255 | insn_error.msg = msg; | |
2256 | return TRUE; | |
2257 | } | |
2258 | ||
2259 | /* Record an instruction error with no % format fields. ARGNUM and MSG are | |
2260 | as for set_insn_error_format. */ | |
2261 | ||
2262 | static void | |
2263 | set_insn_error (int argnum, const char *msg) | |
2264 | { | |
2265 | set_insn_error_format (argnum, ERR_FMT_PLAIN, msg); | |
2266 | } | |
2267 | ||
2268 | /* Record an instruction error with one %d field I. ARGNUM and MSG are | |
2269 | as for set_insn_error_format. */ | |
2270 | ||
2271 | static void | |
2272 | set_insn_error_i (int argnum, const char *msg, int i) | |
2273 | { | |
2274 | if (set_insn_error_format (argnum, ERR_FMT_I, msg)) | |
2275 | insn_error.u.i = i; | |
2276 | } | |
2277 | ||
2278 | /* Record an instruction error with two %s fields S1 and S2. ARGNUM and MSG | |
2279 | are as for set_insn_error_format. */ | |
2280 | ||
2281 | static void | |
2282 | set_insn_error_ss (int argnum, const char *msg, const char *s1, const char *s2) | |
2283 | { | |
2284 | if (set_insn_error_format (argnum, ERR_FMT_SS, msg)) | |
2285 | { | |
2286 | insn_error.u.ss[0] = s1; | |
2287 | insn_error.u.ss[1] = s2; | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | /* Report the error in insn_error, which is against assembly code STR. */ | |
2292 | ||
2293 | static void | |
2294 | report_insn_error (const char *str) | |
2295 | { | |
2296 | const char *msg; | |
2297 | ||
2298 | msg = ACONCAT ((insn_error.msg, " `%s'", NULL)); | |
2299 | switch (insn_error.format) | |
2300 | { | |
2301 | case ERR_FMT_PLAIN: | |
2302 | as_bad (msg, str); | |
2303 | break; | |
2304 | ||
2305 | case ERR_FMT_I: | |
2306 | as_bad (msg, insn_error.u.i, str); | |
2307 | break; | |
2308 | ||
2309 | case ERR_FMT_SS: | |
2310 | as_bad (msg, insn_error.u.ss[0], insn_error.u.ss[1], str); | |
2311 | break; | |
2312 | } | |
2313 | } | |
2314 | ||
71400594 RS |
2315 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
2316 | the idea is to make it obvious at a glance that each errata is | |
2317 | included. */ | |
2318 | ||
2319 | static void | |
2320 | init_vr4120_conflicts (void) | |
2321 | { | |
2322 | #define CONFLICT(FIRST, SECOND) \ | |
2323 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
2324 | ||
2325 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
2326 | CONFLICT (MACC, DIV); | |
2327 | CONFLICT (DMACC, DIV); | |
2328 | ||
2329 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
2330 | CONFLICT (DMULT, DMULT); | |
2331 | CONFLICT (DMULT, DMACC); | |
2332 | CONFLICT (DMACC, DMULT); | |
2333 | CONFLICT (DMACC, DMACC); | |
2334 | ||
2335 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
2336 | CONFLICT (MACC, MTHILO); | |
2337 | CONFLICT (DMACC, MTHILO); | |
2338 | ||
2339 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
2340 | instruction is executed immediately after a MACC or DMACC | |
2341 | instruction, the result of [either instruction] is incorrect." */ | |
2342 | CONFLICT (MACC, MULT); | |
2343 | CONFLICT (MACC, DMULT); | |
2344 | CONFLICT (DMACC, MULT); | |
2345 | CONFLICT (DMACC, DMULT); | |
2346 | ||
2347 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
2348 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
2349 | DDIV or DDIVU instruction, the result of the MACC or | |
2350 | DMACC instruction is incorrect.". */ | |
2351 | CONFLICT (DMULT, MACC); | |
2352 | CONFLICT (DMULT, DMACC); | |
2353 | CONFLICT (DIV, MACC); | |
2354 | CONFLICT (DIV, DMACC); | |
2355 | ||
2356 | #undef CONFLICT | |
2357 | } | |
2358 | ||
707bfff6 TS |
2359 | struct regname { |
2360 | const char *name; | |
2361 | unsigned int num; | |
2362 | }; | |
2363 | ||
14daeee3 | 2364 | #define RNUM_MASK 0x00000ff |
56d438b1 | 2365 | #define RTYPE_MASK 0x0ffff00 |
14daeee3 RS |
2366 | #define RTYPE_NUM 0x0000100 |
2367 | #define RTYPE_FPU 0x0000200 | |
2368 | #define RTYPE_FCC 0x0000400 | |
2369 | #define RTYPE_VEC 0x0000800 | |
2370 | #define RTYPE_GP 0x0001000 | |
2371 | #define RTYPE_CP0 0x0002000 | |
2372 | #define RTYPE_PC 0x0004000 | |
2373 | #define RTYPE_ACC 0x0008000 | |
2374 | #define RTYPE_CCC 0x0010000 | |
2375 | #define RTYPE_VI 0x0020000 | |
2376 | #define RTYPE_VF 0x0040000 | |
2377 | #define RTYPE_R5900_I 0x0080000 | |
2378 | #define RTYPE_R5900_Q 0x0100000 | |
2379 | #define RTYPE_R5900_R 0x0200000 | |
2380 | #define RTYPE_R5900_ACC 0x0400000 | |
56d438b1 | 2381 | #define RTYPE_MSA 0x0800000 |
14daeee3 | 2382 | #define RWARN 0x8000000 |
707bfff6 TS |
2383 | |
2384 | #define GENERIC_REGISTER_NUMBERS \ | |
2385 | {"$0", RTYPE_NUM | 0}, \ | |
2386 | {"$1", RTYPE_NUM | 1}, \ | |
2387 | {"$2", RTYPE_NUM | 2}, \ | |
2388 | {"$3", RTYPE_NUM | 3}, \ | |
2389 | {"$4", RTYPE_NUM | 4}, \ | |
2390 | {"$5", RTYPE_NUM | 5}, \ | |
2391 | {"$6", RTYPE_NUM | 6}, \ | |
2392 | {"$7", RTYPE_NUM | 7}, \ | |
2393 | {"$8", RTYPE_NUM | 8}, \ | |
2394 | {"$9", RTYPE_NUM | 9}, \ | |
2395 | {"$10", RTYPE_NUM | 10}, \ | |
2396 | {"$11", RTYPE_NUM | 11}, \ | |
2397 | {"$12", RTYPE_NUM | 12}, \ | |
2398 | {"$13", RTYPE_NUM | 13}, \ | |
2399 | {"$14", RTYPE_NUM | 14}, \ | |
2400 | {"$15", RTYPE_NUM | 15}, \ | |
2401 | {"$16", RTYPE_NUM | 16}, \ | |
2402 | {"$17", RTYPE_NUM | 17}, \ | |
2403 | {"$18", RTYPE_NUM | 18}, \ | |
2404 | {"$19", RTYPE_NUM | 19}, \ | |
2405 | {"$20", RTYPE_NUM | 20}, \ | |
2406 | {"$21", RTYPE_NUM | 21}, \ | |
2407 | {"$22", RTYPE_NUM | 22}, \ | |
2408 | {"$23", RTYPE_NUM | 23}, \ | |
2409 | {"$24", RTYPE_NUM | 24}, \ | |
2410 | {"$25", RTYPE_NUM | 25}, \ | |
2411 | {"$26", RTYPE_NUM | 26}, \ | |
2412 | {"$27", RTYPE_NUM | 27}, \ | |
2413 | {"$28", RTYPE_NUM | 28}, \ | |
2414 | {"$29", RTYPE_NUM | 29}, \ | |
2415 | {"$30", RTYPE_NUM | 30}, \ | |
2416 | {"$31", RTYPE_NUM | 31} | |
2417 | ||
2418 | #define FPU_REGISTER_NAMES \ | |
2419 | {"$f0", RTYPE_FPU | 0}, \ | |
2420 | {"$f1", RTYPE_FPU | 1}, \ | |
2421 | {"$f2", RTYPE_FPU | 2}, \ | |
2422 | {"$f3", RTYPE_FPU | 3}, \ | |
2423 | {"$f4", RTYPE_FPU | 4}, \ | |
2424 | {"$f5", RTYPE_FPU | 5}, \ | |
2425 | {"$f6", RTYPE_FPU | 6}, \ | |
2426 | {"$f7", RTYPE_FPU | 7}, \ | |
2427 | {"$f8", RTYPE_FPU | 8}, \ | |
2428 | {"$f9", RTYPE_FPU | 9}, \ | |
2429 | {"$f10", RTYPE_FPU | 10}, \ | |
2430 | {"$f11", RTYPE_FPU | 11}, \ | |
2431 | {"$f12", RTYPE_FPU | 12}, \ | |
2432 | {"$f13", RTYPE_FPU | 13}, \ | |
2433 | {"$f14", RTYPE_FPU | 14}, \ | |
2434 | {"$f15", RTYPE_FPU | 15}, \ | |
2435 | {"$f16", RTYPE_FPU | 16}, \ | |
2436 | {"$f17", RTYPE_FPU | 17}, \ | |
2437 | {"$f18", RTYPE_FPU | 18}, \ | |
2438 | {"$f19", RTYPE_FPU | 19}, \ | |
2439 | {"$f20", RTYPE_FPU | 20}, \ | |
2440 | {"$f21", RTYPE_FPU | 21}, \ | |
2441 | {"$f22", RTYPE_FPU | 22}, \ | |
2442 | {"$f23", RTYPE_FPU | 23}, \ | |
2443 | {"$f24", RTYPE_FPU | 24}, \ | |
2444 | {"$f25", RTYPE_FPU | 25}, \ | |
2445 | {"$f26", RTYPE_FPU | 26}, \ | |
2446 | {"$f27", RTYPE_FPU | 27}, \ | |
2447 | {"$f28", RTYPE_FPU | 28}, \ | |
2448 | {"$f29", RTYPE_FPU | 29}, \ | |
2449 | {"$f30", RTYPE_FPU | 30}, \ | |
2450 | {"$f31", RTYPE_FPU | 31} | |
2451 | ||
2452 | #define FPU_CONDITION_CODE_NAMES \ | |
2453 | {"$fcc0", RTYPE_FCC | 0}, \ | |
2454 | {"$fcc1", RTYPE_FCC | 1}, \ | |
2455 | {"$fcc2", RTYPE_FCC | 2}, \ | |
2456 | {"$fcc3", RTYPE_FCC | 3}, \ | |
2457 | {"$fcc4", RTYPE_FCC | 4}, \ | |
2458 | {"$fcc5", RTYPE_FCC | 5}, \ | |
2459 | {"$fcc6", RTYPE_FCC | 6}, \ | |
2460 | {"$fcc7", RTYPE_FCC | 7} | |
2461 | ||
2462 | #define COPROC_CONDITION_CODE_NAMES \ | |
2463 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
2464 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
2465 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
2466 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
2467 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
2468 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
2469 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
2470 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
2471 | ||
2472 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
2473 | {"$a4", RTYPE_GP | 8}, \ | |
2474 | {"$a5", RTYPE_GP | 9}, \ | |
2475 | {"$a6", RTYPE_GP | 10}, \ | |
2476 | {"$a7", RTYPE_GP | 11}, \ | |
2477 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
2478 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
2479 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
2480 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
2481 | {"$t0", RTYPE_GP | 12}, \ | |
2482 | {"$t1", RTYPE_GP | 13}, \ | |
2483 | {"$t2", RTYPE_GP | 14}, \ | |
2484 | {"$t3", RTYPE_GP | 15} | |
2485 | ||
2486 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
2487 | {"$t0", RTYPE_GP | 8}, \ | |
2488 | {"$t1", RTYPE_GP | 9}, \ | |
2489 | {"$t2", RTYPE_GP | 10}, \ | |
2490 | {"$t3", RTYPE_GP | 11}, \ | |
2491 | {"$t4", RTYPE_GP | 12}, \ | |
2492 | {"$t5", RTYPE_GP | 13}, \ | |
2493 | {"$t6", RTYPE_GP | 14}, \ | |
2494 | {"$t7", RTYPE_GP | 15}, \ | |
2495 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
2496 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
2497 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
2498 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ | |
2499 | ||
2500 | /* Remaining symbolic register names */ | |
2501 | #define SYMBOLIC_REGISTER_NAMES \ | |
2502 | {"$zero", RTYPE_GP | 0}, \ | |
2503 | {"$at", RTYPE_GP | 1}, \ | |
2504 | {"$AT", RTYPE_GP | 1}, \ | |
2505 | {"$v0", RTYPE_GP | 2}, \ | |
2506 | {"$v1", RTYPE_GP | 3}, \ | |
2507 | {"$a0", RTYPE_GP | 4}, \ | |
2508 | {"$a1", RTYPE_GP | 5}, \ | |
2509 | {"$a2", RTYPE_GP | 6}, \ | |
2510 | {"$a3", RTYPE_GP | 7}, \ | |
2511 | {"$s0", RTYPE_GP | 16}, \ | |
2512 | {"$s1", RTYPE_GP | 17}, \ | |
2513 | {"$s2", RTYPE_GP | 18}, \ | |
2514 | {"$s3", RTYPE_GP | 19}, \ | |
2515 | {"$s4", RTYPE_GP | 20}, \ | |
2516 | {"$s5", RTYPE_GP | 21}, \ | |
2517 | {"$s6", RTYPE_GP | 22}, \ | |
2518 | {"$s7", RTYPE_GP | 23}, \ | |
2519 | {"$t8", RTYPE_GP | 24}, \ | |
2520 | {"$t9", RTYPE_GP | 25}, \ | |
2521 | {"$k0", RTYPE_GP | 26}, \ | |
2522 | {"$kt0", RTYPE_GP | 26}, \ | |
2523 | {"$k1", RTYPE_GP | 27}, \ | |
2524 | {"$kt1", RTYPE_GP | 27}, \ | |
2525 | {"$gp", RTYPE_GP | 28}, \ | |
2526 | {"$sp", RTYPE_GP | 29}, \ | |
2527 | {"$s8", RTYPE_GP | 30}, \ | |
2528 | {"$fp", RTYPE_GP | 30}, \ | |
2529 | {"$ra", RTYPE_GP | 31} | |
2530 | ||
2531 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
2532 | {"$pc", RTYPE_PC | 0} | |
2533 | ||
2534 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
2535 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
2536 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
2537 | {"$v2", RTYPE_VEC | 2}, \ | |
2538 | {"$v3", RTYPE_VEC | 3}, \ | |
2539 | {"$v4", RTYPE_VEC | 4}, \ | |
2540 | {"$v5", RTYPE_VEC | 5}, \ | |
2541 | {"$v6", RTYPE_VEC | 6}, \ | |
2542 | {"$v7", RTYPE_VEC | 7}, \ | |
2543 | {"$v8", RTYPE_VEC | 8}, \ | |
2544 | {"$v9", RTYPE_VEC | 9}, \ | |
2545 | {"$v10", RTYPE_VEC | 10}, \ | |
2546 | {"$v11", RTYPE_VEC | 11}, \ | |
2547 | {"$v12", RTYPE_VEC | 12}, \ | |
2548 | {"$v13", RTYPE_VEC | 13}, \ | |
2549 | {"$v14", RTYPE_VEC | 14}, \ | |
2550 | {"$v15", RTYPE_VEC | 15}, \ | |
2551 | {"$v16", RTYPE_VEC | 16}, \ | |
2552 | {"$v17", RTYPE_VEC | 17}, \ | |
2553 | {"$v18", RTYPE_VEC | 18}, \ | |
2554 | {"$v19", RTYPE_VEC | 19}, \ | |
2555 | {"$v20", RTYPE_VEC | 20}, \ | |
2556 | {"$v21", RTYPE_VEC | 21}, \ | |
2557 | {"$v22", RTYPE_VEC | 22}, \ | |
2558 | {"$v23", RTYPE_VEC | 23}, \ | |
2559 | {"$v24", RTYPE_VEC | 24}, \ | |
2560 | {"$v25", RTYPE_VEC | 25}, \ | |
2561 | {"$v26", RTYPE_VEC | 26}, \ | |
2562 | {"$v27", RTYPE_VEC | 27}, \ | |
2563 | {"$v28", RTYPE_VEC | 28}, \ | |
2564 | {"$v29", RTYPE_VEC | 29}, \ | |
2565 | {"$v30", RTYPE_VEC | 30}, \ | |
2566 | {"$v31", RTYPE_VEC | 31} | |
2567 | ||
14daeee3 RS |
2568 | #define R5900_I_NAMES \ |
2569 | {"$I", RTYPE_R5900_I | 0} | |
2570 | ||
2571 | #define R5900_Q_NAMES \ | |
2572 | {"$Q", RTYPE_R5900_Q | 0} | |
2573 | ||
2574 | #define R5900_R_NAMES \ | |
2575 | {"$R", RTYPE_R5900_R | 0} | |
2576 | ||
2577 | #define R5900_ACC_NAMES \ | |
2578 | {"$ACC", RTYPE_R5900_ACC | 0 } | |
2579 | ||
707bfff6 TS |
2580 | #define MIPS_DSP_ACCUMULATOR_NAMES \ |
2581 | {"$ac0", RTYPE_ACC | 0}, \ | |
2582 | {"$ac1", RTYPE_ACC | 1}, \ | |
2583 | {"$ac2", RTYPE_ACC | 2}, \ | |
2584 | {"$ac3", RTYPE_ACC | 3} | |
2585 | ||
2586 | static const struct regname reg_names[] = { | |
2587 | GENERIC_REGISTER_NUMBERS, | |
2588 | FPU_REGISTER_NAMES, | |
2589 | FPU_CONDITION_CODE_NAMES, | |
2590 | COPROC_CONDITION_CODE_NAMES, | |
2591 | ||
2592 | /* The $txx registers depends on the abi, | |
2593 | these will be added later into the symbol table from | |
2594 | one of the tables below once mips_abi is set after | |
2595 | parsing of arguments from the command line. */ | |
2596 | SYMBOLIC_REGISTER_NAMES, | |
2597 | ||
2598 | MIPS16_SPECIAL_REGISTER_NAMES, | |
2599 | MDMX_VECTOR_REGISTER_NAMES, | |
14daeee3 RS |
2600 | R5900_I_NAMES, |
2601 | R5900_Q_NAMES, | |
2602 | R5900_R_NAMES, | |
2603 | R5900_ACC_NAMES, | |
707bfff6 TS |
2604 | MIPS_DSP_ACCUMULATOR_NAMES, |
2605 | {0, 0} | |
2606 | }; | |
2607 | ||
2608 | static const struct regname reg_names_o32[] = { | |
2609 | O32_SYMBOLIC_REGISTER_NAMES, | |
2610 | {0, 0} | |
2611 | }; | |
2612 | ||
2613 | static const struct regname reg_names_n32n64[] = { | |
2614 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
2615 | {0, 0} | |
2616 | }; | |
2617 | ||
a92713e6 RS |
2618 | /* Register symbols $v0 and $v1 map to GPRs 2 and 3, but they can also be |
2619 | interpreted as vector registers 0 and 1. If SYMVAL is the value of one | |
2620 | of these register symbols, return the associated vector register, | |
2621 | otherwise return SYMVAL itself. */ | |
df58fc94 | 2622 | |
a92713e6 RS |
2623 | static unsigned int |
2624 | mips_prefer_vec_regno (unsigned int symval) | |
707bfff6 | 2625 | { |
a92713e6 RS |
2626 | if ((symval & -2) == (RTYPE_GP | 2)) |
2627 | return RTYPE_VEC | (symval & 1); | |
2628 | return symval; | |
2629 | } | |
2630 | ||
14daeee3 RS |
2631 | /* Return true if string [S, E) is a valid register name, storing its |
2632 | symbol value in *SYMVAL_PTR if so. */ | |
a92713e6 RS |
2633 | |
2634 | static bfd_boolean | |
14daeee3 | 2635 | mips_parse_register_1 (char *s, char *e, unsigned int *symval_ptr) |
a92713e6 | 2636 | { |
707bfff6 | 2637 | char save_c; |
14daeee3 | 2638 | symbolS *symbol; |
707bfff6 TS |
2639 | |
2640 | /* Terminate name. */ | |
2641 | save_c = *e; | |
2642 | *e = '\0'; | |
2643 | ||
a92713e6 RS |
2644 | /* Look up the name. */ |
2645 | symbol = symbol_find (s); | |
2646 | *e = save_c; | |
2647 | ||
2648 | if (!symbol || S_GET_SEGMENT (symbol) != reg_section) | |
2649 | return FALSE; | |
2650 | ||
14daeee3 RS |
2651 | *symval_ptr = S_GET_VALUE (symbol); |
2652 | return TRUE; | |
2653 | } | |
2654 | ||
2655 | /* Return true if the string at *SPTR is a valid register name. Allow it | |
2656 | to have a VU0-style channel suffix of the form x?y?z?w? if CHANNELS_PTR | |
2657 | is nonnull. | |
2658 | ||
2659 | When returning true, move *SPTR past the register, store the | |
2660 | register's symbol value in *SYMVAL_PTR and the channel mask in | |
2661 | *CHANNELS_PTR (if nonnull). The symbol value includes the register | |
2662 | number (RNUM_MASK) and register type (RTYPE_MASK). The channel mask | |
2663 | is a 4-bit value of the form XYZW and is 0 if no suffix was given. */ | |
2664 | ||
2665 | static bfd_boolean | |
2666 | mips_parse_register (char **sptr, unsigned int *symval_ptr, | |
2667 | unsigned int *channels_ptr) | |
2668 | { | |
2669 | char *s, *e, *m; | |
2670 | const char *q; | |
2671 | unsigned int channels, symval, bit; | |
2672 | ||
2673 | /* Find end of name. */ | |
2674 | s = e = *sptr; | |
2675 | if (is_name_beginner (*e)) | |
2676 | ++e; | |
2677 | while (is_part_of_name (*e)) | |
2678 | ++e; | |
2679 | ||
2680 | channels = 0; | |
2681 | if (!mips_parse_register_1 (s, e, &symval)) | |
2682 | { | |
2683 | if (!channels_ptr) | |
2684 | return FALSE; | |
2685 | ||
2686 | /* Eat characters from the end of the string that are valid | |
2687 | channel suffixes. The preceding register must be $ACC or | |
2688 | end with a digit, so there is no ambiguity. */ | |
2689 | bit = 1; | |
2690 | m = e; | |
2691 | for (q = "wzyx"; *q; q++, bit <<= 1) | |
2692 | if (m > s && m[-1] == *q) | |
2693 | { | |
2694 | --m; | |
2695 | channels |= bit; | |
2696 | } | |
2697 | ||
2698 | if (channels == 0 | |
2699 | || !mips_parse_register_1 (s, m, &symval) | |
2700 | || (symval & (RTYPE_VI | RTYPE_VF | RTYPE_R5900_ACC)) == 0) | |
2701 | return FALSE; | |
2702 | } | |
2703 | ||
a92713e6 | 2704 | *sptr = e; |
14daeee3 RS |
2705 | *symval_ptr = symval; |
2706 | if (channels_ptr) | |
2707 | *channels_ptr = channels; | |
a92713e6 RS |
2708 | return TRUE; |
2709 | } | |
2710 | ||
2711 | /* Check if SPTR points at a valid register specifier according to TYPES. | |
2712 | If so, then return 1, advance S to consume the specifier and store | |
2713 | the register's number in REGNOP, otherwise return 0. */ | |
2714 | ||
2715 | static int | |
2716 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
2717 | { | |
2718 | unsigned int regno; | |
2719 | ||
14daeee3 | 2720 | if (mips_parse_register (s, ®no, NULL)) |
707bfff6 | 2721 | { |
a92713e6 RS |
2722 | if (types & RTYPE_VEC) |
2723 | regno = mips_prefer_vec_regno (regno); | |
2724 | if (regno & types) | |
2725 | regno &= RNUM_MASK; | |
2726 | else | |
2727 | regno = ~0; | |
707bfff6 | 2728 | } |
a92713e6 | 2729 | else |
707bfff6 | 2730 | { |
a92713e6 | 2731 | if (types & RWARN) |
1661c76c | 2732 | as_warn (_("unrecognized register name `%s'"), *s); |
a92713e6 | 2733 | regno = ~0; |
707bfff6 | 2734 | } |
707bfff6 | 2735 | if (regnop) |
a92713e6 RS |
2736 | *regnop = regno; |
2737 | return regno <= RNUM_MASK; | |
707bfff6 TS |
2738 | } |
2739 | ||
14daeee3 RS |
2740 | /* Parse a VU0 "x?y?z?w?" channel mask at S and store the associated |
2741 | mask in *CHANNELS. Return a pointer to the first unconsumed character. */ | |
2742 | ||
2743 | static char * | |
2744 | mips_parse_vu0_channels (char *s, unsigned int *channels) | |
2745 | { | |
2746 | unsigned int i; | |
2747 | ||
2748 | *channels = 0; | |
2749 | for (i = 0; i < 4; i++) | |
2750 | if (*s == "xyzw"[i]) | |
2751 | { | |
2752 | *channels |= 1 << (3 - i); | |
2753 | ++s; | |
2754 | } | |
2755 | return s; | |
2756 | } | |
2757 | ||
a92713e6 RS |
2758 | /* Token types for parsed operand lists. */ |
2759 | enum mips_operand_token_type { | |
2760 | /* A plain register, e.g. $f2. */ | |
2761 | OT_REG, | |
df58fc94 | 2762 | |
14daeee3 RS |
2763 | /* A 4-bit XYZW channel mask. */ |
2764 | OT_CHANNELS, | |
2765 | ||
56d438b1 CF |
2766 | /* A constant vector index, e.g. [1]. */ |
2767 | OT_INTEGER_INDEX, | |
2768 | ||
2769 | /* A register vector index, e.g. [$2]. */ | |
2770 | OT_REG_INDEX, | |
df58fc94 | 2771 | |
a92713e6 RS |
2772 | /* A continuous range of registers, e.g. $s0-$s4. */ |
2773 | OT_REG_RANGE, | |
2774 | ||
2775 | /* A (possibly relocated) expression. */ | |
2776 | OT_INTEGER, | |
2777 | ||
2778 | /* A floating-point value. */ | |
2779 | OT_FLOAT, | |
2780 | ||
2781 | /* A single character. This can be '(', ')' or ',', but '(' only appears | |
2782 | before OT_REGs. */ | |
2783 | OT_CHAR, | |
2784 | ||
14daeee3 RS |
2785 | /* A doubled character, either "--" or "++". */ |
2786 | OT_DOUBLE_CHAR, | |
2787 | ||
a92713e6 RS |
2788 | /* The end of the operand list. */ |
2789 | OT_END | |
2790 | }; | |
2791 | ||
2792 | /* A parsed operand token. */ | |
2793 | struct mips_operand_token | |
2794 | { | |
2795 | /* The type of token. */ | |
2796 | enum mips_operand_token_type type; | |
2797 | union | |
2798 | { | |
56d438b1 | 2799 | /* The register symbol value for an OT_REG or OT_REG_INDEX. */ |
a92713e6 RS |
2800 | unsigned int regno; |
2801 | ||
14daeee3 RS |
2802 | /* The 4-bit channel mask for an OT_CHANNEL_SUFFIX. */ |
2803 | unsigned int channels; | |
2804 | ||
56d438b1 CF |
2805 | /* The integer value of an OT_INTEGER_INDEX. */ |
2806 | addressT index; | |
a92713e6 RS |
2807 | |
2808 | /* The two register symbol values involved in an OT_REG_RANGE. */ | |
2809 | struct { | |
2810 | unsigned int regno1; | |
2811 | unsigned int regno2; | |
2812 | } reg_range; | |
2813 | ||
2814 | /* The value of an OT_INTEGER. The value is represented as an | |
2815 | expression and the relocation operators that were applied to | |
2816 | that expression. The reloc entries are BFD_RELOC_UNUSED if no | |
2817 | relocation operators were used. */ | |
2818 | struct { | |
2819 | expressionS value; | |
2820 | bfd_reloc_code_real_type relocs[3]; | |
2821 | } integer; | |
2822 | ||
2823 | /* The binary data for an OT_FLOAT constant, and the number of bytes | |
2824 | in the constant. */ | |
2825 | struct { | |
2826 | unsigned char data[8]; | |
2827 | int length; | |
2828 | } flt; | |
2829 | ||
14daeee3 | 2830 | /* The character represented by an OT_CHAR or OT_DOUBLE_CHAR. */ |
a92713e6 RS |
2831 | char ch; |
2832 | } u; | |
2833 | }; | |
2834 | ||
2835 | /* An obstack used to construct lists of mips_operand_tokens. */ | |
2836 | static struct obstack mips_operand_tokens; | |
2837 | ||
2838 | /* Give TOKEN type TYPE and add it to mips_operand_tokens. */ | |
2839 | ||
2840 | static void | |
2841 | mips_add_token (struct mips_operand_token *token, | |
2842 | enum mips_operand_token_type type) | |
2843 | { | |
2844 | token->type = type; | |
2845 | obstack_grow (&mips_operand_tokens, token, sizeof (*token)); | |
2846 | } | |
2847 | ||
2848 | /* Check whether S is '(' followed by a register name. Add OT_CHAR | |
2849 | and OT_REG tokens for them if so, and return a pointer to the first | |
2850 | unconsumed character. Return null otherwise. */ | |
2851 | ||
2852 | static char * | |
2853 | mips_parse_base_start (char *s) | |
2854 | { | |
2855 | struct mips_operand_token token; | |
14daeee3 RS |
2856 | unsigned int regno, channels; |
2857 | bfd_boolean decrement_p; | |
df58fc94 | 2858 | |
a92713e6 RS |
2859 | if (*s != '(') |
2860 | return 0; | |
2861 | ||
2862 | ++s; | |
2863 | SKIP_SPACE_TABS (s); | |
14daeee3 RS |
2864 | |
2865 | /* Only match "--" as part of a base expression. In other contexts "--X" | |
2866 | is a double negative. */ | |
2867 | decrement_p = (s[0] == '-' && s[1] == '-'); | |
2868 | if (decrement_p) | |
2869 | { | |
2870 | s += 2; | |
2871 | SKIP_SPACE_TABS (s); | |
2872 | } | |
2873 | ||
2874 | /* Allow a channel specifier because that leads to better error messages | |
2875 | than treating something like "$vf0x++" as an expression. */ | |
2876 | if (!mips_parse_register (&s, ®no, &channels)) | |
a92713e6 RS |
2877 | return 0; |
2878 | ||
2879 | token.u.ch = '('; | |
2880 | mips_add_token (&token, OT_CHAR); | |
2881 | ||
14daeee3 RS |
2882 | if (decrement_p) |
2883 | { | |
2884 | token.u.ch = '-'; | |
2885 | mips_add_token (&token, OT_DOUBLE_CHAR); | |
2886 | } | |
2887 | ||
a92713e6 RS |
2888 | token.u.regno = regno; |
2889 | mips_add_token (&token, OT_REG); | |
2890 | ||
14daeee3 RS |
2891 | if (channels) |
2892 | { | |
2893 | token.u.channels = channels; | |
2894 | mips_add_token (&token, OT_CHANNELS); | |
2895 | } | |
2896 | ||
2897 | /* For consistency, only match "++" as part of base expressions too. */ | |
2898 | SKIP_SPACE_TABS (s); | |
2899 | if (s[0] == '+' && s[1] == '+') | |
2900 | { | |
2901 | s += 2; | |
2902 | token.u.ch = '+'; | |
2903 | mips_add_token (&token, OT_DOUBLE_CHAR); | |
2904 | } | |
2905 | ||
a92713e6 RS |
2906 | return s; |
2907 | } | |
2908 | ||
2909 | /* Parse one or more tokens from S. Return a pointer to the first | |
2910 | unconsumed character on success. Return null if an error was found | |
2911 | and store the error text in insn_error. FLOAT_FORMAT is as for | |
2912 | mips_parse_arguments. */ | |
2913 | ||
2914 | static char * | |
2915 | mips_parse_argument_token (char *s, char float_format) | |
2916 | { | |
2917 | char *end, *save_in, *err; | |
14daeee3 | 2918 | unsigned int regno1, regno2, channels; |
a92713e6 RS |
2919 | struct mips_operand_token token; |
2920 | ||
2921 | /* First look for "($reg", since we want to treat that as an | |
2922 | OT_CHAR and OT_REG rather than an expression. */ | |
2923 | end = mips_parse_base_start (s); | |
2924 | if (end) | |
2925 | return end; | |
2926 | ||
2927 | /* Handle other characters that end up as OT_CHARs. */ | |
2928 | if (*s == ')' || *s == ',') | |
2929 | { | |
2930 | token.u.ch = *s; | |
2931 | mips_add_token (&token, OT_CHAR); | |
2932 | ++s; | |
2933 | return s; | |
2934 | } | |
2935 | ||
2936 | /* Handle tokens that start with a register. */ | |
14daeee3 | 2937 | if (mips_parse_register (&s, ®no1, &channels)) |
df58fc94 | 2938 | { |
14daeee3 RS |
2939 | if (channels) |
2940 | { | |
2941 | /* A register and a VU0 channel suffix. */ | |
2942 | token.u.regno = regno1; | |
2943 | mips_add_token (&token, OT_REG); | |
2944 | ||
2945 | token.u.channels = channels; | |
2946 | mips_add_token (&token, OT_CHANNELS); | |
2947 | return s; | |
2948 | } | |
2949 | ||
a92713e6 RS |
2950 | SKIP_SPACE_TABS (s); |
2951 | if (*s == '-') | |
df58fc94 | 2952 | { |
a92713e6 RS |
2953 | /* A register range. */ |
2954 | ++s; | |
2955 | SKIP_SPACE_TABS (s); | |
14daeee3 | 2956 | if (!mips_parse_register (&s, ®no2, NULL)) |
a92713e6 | 2957 | { |
1661c76c | 2958 | set_insn_error (0, _("invalid register range")); |
a92713e6 RS |
2959 | return 0; |
2960 | } | |
df58fc94 | 2961 | |
a92713e6 RS |
2962 | token.u.reg_range.regno1 = regno1; |
2963 | token.u.reg_range.regno2 = regno2; | |
2964 | mips_add_token (&token, OT_REG_RANGE); | |
2965 | return s; | |
2966 | } | |
a92713e6 | 2967 | |
56d438b1 CF |
2968 | /* Add the register itself. */ |
2969 | token.u.regno = regno1; | |
2970 | mips_add_token (&token, OT_REG); | |
2971 | ||
2972 | /* Check for a vector index. */ | |
2973 | if (*s == '[') | |
2974 | { | |
a92713e6 RS |
2975 | ++s; |
2976 | SKIP_SPACE_TABS (s); | |
56d438b1 CF |
2977 | if (mips_parse_register (&s, &token.u.regno, NULL)) |
2978 | mips_add_token (&token, OT_REG_INDEX); | |
2979 | else | |
a92713e6 | 2980 | { |
56d438b1 CF |
2981 | expressionS element; |
2982 | ||
2983 | my_getExpression (&element, s); | |
2984 | if (element.X_op != O_constant) | |
2985 | { | |
2986 | set_insn_error (0, _("vector element must be constant")); | |
2987 | return 0; | |
2988 | } | |
2989 | s = expr_end; | |
2990 | token.u.index = element.X_add_number; | |
2991 | mips_add_token (&token, OT_INTEGER_INDEX); | |
a92713e6 | 2992 | } |
a92713e6 RS |
2993 | SKIP_SPACE_TABS (s); |
2994 | if (*s != ']') | |
2995 | { | |
1661c76c | 2996 | set_insn_error (0, _("missing `]'")); |
a92713e6 RS |
2997 | return 0; |
2998 | } | |
2999 | ++s; | |
df58fc94 | 3000 | } |
a92713e6 | 3001 | return s; |
df58fc94 RS |
3002 | } |
3003 | ||
a92713e6 RS |
3004 | if (float_format) |
3005 | { | |
3006 | /* First try to treat expressions as floats. */ | |
3007 | save_in = input_line_pointer; | |
3008 | input_line_pointer = s; | |
3009 | err = md_atof (float_format, (char *) token.u.flt.data, | |
3010 | &token.u.flt.length); | |
3011 | end = input_line_pointer; | |
3012 | input_line_pointer = save_in; | |
3013 | if (err && *err) | |
3014 | { | |
e3de51ce | 3015 | set_insn_error (0, err); |
a92713e6 RS |
3016 | return 0; |
3017 | } | |
3018 | if (s != end) | |
3019 | { | |
3020 | mips_add_token (&token, OT_FLOAT); | |
3021 | return end; | |
3022 | } | |
3023 | } | |
3024 | ||
3025 | /* Treat everything else as an integer expression. */ | |
3026 | token.u.integer.relocs[0] = BFD_RELOC_UNUSED; | |
3027 | token.u.integer.relocs[1] = BFD_RELOC_UNUSED; | |
3028 | token.u.integer.relocs[2] = BFD_RELOC_UNUSED; | |
3029 | my_getSmallExpression (&token.u.integer.value, token.u.integer.relocs, s); | |
3030 | s = expr_end; | |
3031 | mips_add_token (&token, OT_INTEGER); | |
3032 | return s; | |
3033 | } | |
3034 | ||
3035 | /* S points to the operand list for an instruction. FLOAT_FORMAT is 'f' | |
3036 | if expressions should be treated as 32-bit floating-point constants, | |
3037 | 'd' if they should be treated as 64-bit floating-point constants, | |
3038 | or 0 if they should be treated as integer expressions (the usual case). | |
3039 | ||
3040 | Return a list of tokens on success, otherwise return 0. The caller | |
3041 | must obstack_free the list after use. */ | |
3042 | ||
3043 | static struct mips_operand_token * | |
3044 | mips_parse_arguments (char *s, char float_format) | |
3045 | { | |
3046 | struct mips_operand_token token; | |
3047 | ||
3048 | SKIP_SPACE_TABS (s); | |
3049 | while (*s) | |
3050 | { | |
3051 | s = mips_parse_argument_token (s, float_format); | |
3052 | if (!s) | |
3053 | { | |
3054 | obstack_free (&mips_operand_tokens, | |
3055 | obstack_finish (&mips_operand_tokens)); | |
3056 | return 0; | |
3057 | } | |
3058 | SKIP_SPACE_TABS (s); | |
3059 | } | |
3060 | mips_add_token (&token, OT_END); | |
3061 | return (struct mips_operand_token *) obstack_finish (&mips_operand_tokens); | |
df58fc94 RS |
3062 | } |
3063 | ||
d301a56b RS |
3064 | /* Return TRUE if opcode MO is valid on the currently selected ISA, ASE |
3065 | and architecture. Use is_opcode_valid_16 for MIPS16 opcodes. */ | |
037b32b9 AN |
3066 | |
3067 | static bfd_boolean | |
f79e2745 | 3068 | is_opcode_valid (const struct mips_opcode *mo) |
037b32b9 AN |
3069 | { |
3070 | int isa = mips_opts.isa; | |
846ef2d0 | 3071 | int ase = mips_opts.ase; |
037b32b9 | 3072 | int fp_s, fp_d; |
c6278170 | 3073 | unsigned int i; |
037b32b9 | 3074 | |
c6278170 RS |
3075 | if (ISA_HAS_64BIT_REGS (mips_opts.isa)) |
3076 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
3077 | if ((ase & mips_ases[i].flags) == mips_ases[i].flags) | |
3078 | ase |= mips_ases[i].flags64; | |
037b32b9 | 3079 | |
d301a56b | 3080 | if (!opcode_is_member (mo, isa, ase, mips_opts.arch)) |
037b32b9 AN |
3081 | return FALSE; |
3082 | ||
3083 | /* Check whether the instruction or macro requires single-precision or | |
3084 | double-precision floating-point support. Note that this information is | |
3085 | stored differently in the opcode table for insns and macros. */ | |
3086 | if (mo->pinfo == INSN_MACRO) | |
3087 | { | |
3088 | fp_s = mo->pinfo2 & INSN2_M_FP_S; | |
3089 | fp_d = mo->pinfo2 & INSN2_M_FP_D; | |
3090 | } | |
3091 | else | |
3092 | { | |
3093 | fp_s = mo->pinfo & FP_S; | |
3094 | fp_d = mo->pinfo & FP_D; | |
3095 | } | |
3096 | ||
3097 | if (fp_d && (mips_opts.soft_float || mips_opts.single_float)) | |
3098 | return FALSE; | |
3099 | ||
3100 | if (fp_s && mips_opts.soft_float) | |
3101 | return FALSE; | |
3102 | ||
3103 | return TRUE; | |
3104 | } | |
3105 | ||
3106 | /* Return TRUE if the MIPS16 opcode MO is valid on the currently | |
3107 | selected ISA and architecture. */ | |
3108 | ||
3109 | static bfd_boolean | |
3110 | is_opcode_valid_16 (const struct mips_opcode *mo) | |
3111 | { | |
d301a56b | 3112 | return opcode_is_member (mo, mips_opts.isa, 0, mips_opts.arch); |
037b32b9 AN |
3113 | } |
3114 | ||
df58fc94 RS |
3115 | /* Return TRUE if the size of the microMIPS opcode MO matches one |
3116 | explicitly requested. Always TRUE in the standard MIPS mode. */ | |
3117 | ||
3118 | static bfd_boolean | |
3119 | is_size_valid (const struct mips_opcode *mo) | |
3120 | { | |
3121 | if (!mips_opts.micromips) | |
3122 | return TRUE; | |
3123 | ||
833794fc MR |
3124 | if (mips_opts.insn32) |
3125 | { | |
3126 | if (mo->pinfo != INSN_MACRO && micromips_insn_length (mo) != 4) | |
3127 | return FALSE; | |
3128 | if ((mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0) | |
3129 | return FALSE; | |
3130 | } | |
df58fc94 RS |
3131 | if (!forced_insn_length) |
3132 | return TRUE; | |
3133 | if (mo->pinfo == INSN_MACRO) | |
3134 | return FALSE; | |
3135 | return forced_insn_length == micromips_insn_length (mo); | |
3136 | } | |
3137 | ||
3138 | /* Return TRUE if the microMIPS opcode MO is valid for the delay slot | |
e64af278 MR |
3139 | of the preceding instruction. Always TRUE in the standard MIPS mode. |
3140 | ||
3141 | We don't accept macros in 16-bit delay slots to avoid a case where | |
3142 | a macro expansion fails because it relies on a preceding 32-bit real | |
3143 | instruction to have matched and does not handle the operands correctly. | |
3144 | The only macros that may expand to 16-bit instructions are JAL that | |
3145 | cannot be placed in a delay slot anyway, and corner cases of BALIGN | |
3146 | and BGT (that likewise cannot be placed in a delay slot) that decay to | |
3147 | a NOP. In all these cases the macros precede any corresponding real | |
3148 | instruction definitions in the opcode table, so they will match in the | |
3149 | second pass where the size of the delay slot is ignored and therefore | |
3150 | produce correct code. */ | |
df58fc94 RS |
3151 | |
3152 | static bfd_boolean | |
3153 | is_delay_slot_valid (const struct mips_opcode *mo) | |
3154 | { | |
3155 | if (!mips_opts.micromips) | |
3156 | return TRUE; | |
3157 | ||
3158 | if (mo->pinfo == INSN_MACRO) | |
c06dec14 | 3159 | return (history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) == 0; |
df58fc94 RS |
3160 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 |
3161 | && micromips_insn_length (mo) != 4) | |
3162 | return FALSE; | |
3163 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
3164 | && micromips_insn_length (mo) != 2) | |
3165 | return FALSE; | |
3166 | ||
3167 | return TRUE; | |
3168 | } | |
3169 | ||
fc76e730 RS |
3170 | /* For consistency checking, verify that all bits of OPCODE are specified |
3171 | either by the match/mask part of the instruction definition, or by the | |
3172 | operand list. Also build up a list of operands in OPERANDS. | |
3173 | ||
3174 | INSN_BITS says which bits of the instruction are significant. | |
3175 | If OPCODE is a standard or microMIPS instruction, DECODE_OPERAND | |
3176 | provides the mips_operand description of each operand. DECODE_OPERAND | |
3177 | is null for MIPS16 instructions. */ | |
ab902481 RS |
3178 | |
3179 | static int | |
3180 | validate_mips_insn (const struct mips_opcode *opcode, | |
3181 | unsigned long insn_bits, | |
fc76e730 RS |
3182 | const struct mips_operand *(*decode_operand) (const char *), |
3183 | struct mips_operand_array *operands) | |
ab902481 RS |
3184 | { |
3185 | const char *s; | |
fc76e730 | 3186 | unsigned long used_bits, doubled, undefined, opno, mask; |
ab902481 RS |
3187 | const struct mips_operand *operand; |
3188 | ||
fc76e730 RS |
3189 | mask = (opcode->pinfo == INSN_MACRO ? 0 : opcode->mask); |
3190 | if ((mask & opcode->match) != opcode->match) | |
ab902481 RS |
3191 | { |
3192 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
3193 | opcode->name, opcode->args); | |
3194 | return 0; | |
3195 | } | |
3196 | used_bits = 0; | |
fc76e730 | 3197 | opno = 0; |
14daeee3 RS |
3198 | if (opcode->pinfo2 & INSN2_VU0_CHANNEL_SUFFIX) |
3199 | used_bits = mips_insert_operand (&mips_vu0_channel_mask, used_bits, -1); | |
ab902481 RS |
3200 | for (s = opcode->args; *s; ++s) |
3201 | switch (*s) | |
3202 | { | |
3203 | case ',': | |
3204 | case '(': | |
3205 | case ')': | |
3206 | break; | |
3207 | ||
14daeee3 RS |
3208 | case '#': |
3209 | s++; | |
3210 | break; | |
3211 | ||
ab902481 | 3212 | default: |
fc76e730 RS |
3213 | if (!decode_operand) |
3214 | operand = decode_mips16_operand (*s, FALSE); | |
3215 | else | |
3216 | operand = decode_operand (s); | |
3217 | if (!operand && opcode->pinfo != INSN_MACRO) | |
ab902481 RS |
3218 | { |
3219 | as_bad (_("internal: unknown operand type: %s %s"), | |
3220 | opcode->name, opcode->args); | |
3221 | return 0; | |
3222 | } | |
fc76e730 RS |
3223 | gas_assert (opno < MAX_OPERANDS); |
3224 | operands->operand[opno] = operand; | |
14daeee3 | 3225 | if (operand && operand->type != OP_VU0_MATCH_SUFFIX) |
fc76e730 | 3226 | { |
14daeee3 | 3227 | used_bits = mips_insert_operand (operand, used_bits, -1); |
fc76e730 RS |
3228 | if (operand->type == OP_MDMX_IMM_REG) |
3229 | /* Bit 5 is the format selector (OB vs QH). The opcode table | |
3230 | has separate entries for each format. */ | |
3231 | used_bits &= ~(1 << (operand->lsb + 5)); | |
3232 | if (operand->type == OP_ENTRY_EXIT_LIST) | |
3233 | used_bits &= ~(mask & 0x700); | |
3234 | } | |
ab902481 | 3235 | /* Skip prefix characters. */ |
fc76e730 | 3236 | if (decode_operand && (*s == '+' || *s == 'm')) |
ab902481 | 3237 | ++s; |
fc76e730 | 3238 | opno += 1; |
ab902481 RS |
3239 | break; |
3240 | } | |
fc76e730 | 3241 | doubled = used_bits & mask & insn_bits; |
ab902481 RS |
3242 | if (doubled) |
3243 | { | |
3244 | as_bad (_("internal: bad mips opcode (bits 0x%08lx doubly defined):" | |
3245 | " %s %s"), doubled, opcode->name, opcode->args); | |
3246 | return 0; | |
3247 | } | |
fc76e730 | 3248 | used_bits |= mask; |
ab902481 | 3249 | undefined = ~used_bits & insn_bits; |
fc76e730 | 3250 | if (opcode->pinfo != INSN_MACRO && undefined) |
ab902481 RS |
3251 | { |
3252 | as_bad (_("internal: bad mips opcode (bits 0x%08lx undefined): %s %s"), | |
3253 | undefined, opcode->name, opcode->args); | |
3254 | return 0; | |
3255 | } | |
3256 | used_bits &= ~insn_bits; | |
3257 | if (used_bits) | |
3258 | { | |
3259 | as_bad (_("internal: bad mips opcode (bits 0x%08lx defined): %s %s"), | |
3260 | used_bits, opcode->name, opcode->args); | |
3261 | return 0; | |
3262 | } | |
3263 | return 1; | |
3264 | } | |
3265 | ||
fc76e730 RS |
3266 | /* The MIPS16 version of validate_mips_insn. */ |
3267 | ||
3268 | static int | |
3269 | validate_mips16_insn (const struct mips_opcode *opcode, | |
3270 | struct mips_operand_array *operands) | |
3271 | { | |
3272 | if (opcode->args[0] == 'a' || opcode->args[0] == 'i') | |
3273 | { | |
3274 | /* In this case OPCODE defines the first 16 bits in a 32-bit jump | |
3275 | instruction. Use TMP to describe the full instruction. */ | |
3276 | struct mips_opcode tmp; | |
3277 | ||
3278 | tmp = *opcode; | |
3279 | tmp.match <<= 16; | |
3280 | tmp.mask <<= 16; | |
3281 | return validate_mips_insn (&tmp, 0xffffffff, 0, operands); | |
3282 | } | |
3283 | return validate_mips_insn (opcode, 0xffff, 0, operands); | |
3284 | } | |
3285 | ||
ab902481 RS |
3286 | /* The microMIPS version of validate_mips_insn. */ |
3287 | ||
3288 | static int | |
fc76e730 RS |
3289 | validate_micromips_insn (const struct mips_opcode *opc, |
3290 | struct mips_operand_array *operands) | |
ab902481 RS |
3291 | { |
3292 | unsigned long insn_bits; | |
3293 | unsigned long major; | |
3294 | unsigned int length; | |
3295 | ||
fc76e730 RS |
3296 | if (opc->pinfo == INSN_MACRO) |
3297 | return validate_mips_insn (opc, 0xffffffff, decode_micromips_operand, | |
3298 | operands); | |
3299 | ||
ab902481 RS |
3300 | length = micromips_insn_length (opc); |
3301 | if (length != 2 && length != 4) | |
3302 | { | |
1661c76c | 3303 | as_bad (_("internal error: bad microMIPS opcode (incorrect length: %u): " |
ab902481 RS |
3304 | "%s %s"), length, opc->name, opc->args); |
3305 | return 0; | |
3306 | } | |
3307 | major = opc->match >> (10 + 8 * (length - 2)); | |
3308 | if ((length == 2 && (major & 7) != 1 && (major & 6) != 2) | |
3309 | || (length == 4 && (major & 7) != 0 && (major & 4) != 4)) | |
3310 | { | |
1661c76c | 3311 | as_bad (_("internal error: bad microMIPS opcode " |
ab902481 RS |
3312 | "(opcode/length mismatch): %s %s"), opc->name, opc->args); |
3313 | return 0; | |
3314 | } | |
3315 | ||
3316 | /* Shift piecewise to avoid an overflow where unsigned long is 32-bit. */ | |
3317 | insn_bits = 1 << 4 * length; | |
3318 | insn_bits <<= 4 * length; | |
3319 | insn_bits -= 1; | |
fc76e730 RS |
3320 | return validate_mips_insn (opc, insn_bits, decode_micromips_operand, |
3321 | operands); | |
ab902481 RS |
3322 | } |
3323 | ||
707bfff6 TS |
3324 | /* This function is called once, at assembler startup time. It should set up |
3325 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 3326 | |
252b5132 | 3327 | void |
17a2f251 | 3328 | md_begin (void) |
252b5132 | 3329 | { |
3994f87e | 3330 | const char *retval = NULL; |
156c2f8b | 3331 | int i = 0; |
252b5132 | 3332 | int broken = 0; |
1f25f5d3 | 3333 | |
0a44bf69 RS |
3334 | if (mips_pic != NO_PIC) |
3335 | { | |
3336 | if (g_switch_seen && g_switch_value != 0) | |
3337 | as_bad (_("-G may not be used in position-independent code")); | |
3338 | g_switch_value = 0; | |
3339 | } | |
3340 | ||
fef14a42 | 3341 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch)) |
1661c76c | 3342 | as_warn (_("could not set architecture and machine")); |
252b5132 | 3343 | |
252b5132 RH |
3344 | op_hash = hash_new (); |
3345 | ||
fc76e730 | 3346 | mips_operands = XCNEWVEC (struct mips_operand_array, NUMOPCODES); |
252b5132 RH |
3347 | for (i = 0; i < NUMOPCODES;) |
3348 | { | |
3349 | const char *name = mips_opcodes[i].name; | |
3350 | ||
17a2f251 | 3351 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
3352 | if (retval != NULL) |
3353 | { | |
3354 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
3355 | mips_opcodes[i].name, retval); | |
3356 | /* Probably a memory allocation problem? Give up now. */ | |
1661c76c | 3357 | as_fatal (_("broken assembler, no assembly attempted")); |
252b5132 RH |
3358 | } |
3359 | do | |
3360 | { | |
fc76e730 RS |
3361 | if (!validate_mips_insn (&mips_opcodes[i], 0xffffffff, |
3362 | decode_mips_operand, &mips_operands[i])) | |
3363 | broken = 1; | |
3364 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) | |
252b5132 | 3365 | { |
fc76e730 RS |
3366 | create_insn (&nop_insn, mips_opcodes + i); |
3367 | if (mips_fix_loongson2f_nop) | |
3368 | nop_insn.insn_opcode = LOONGSON2F_NOP_INSN; | |
3369 | nop_insn.fixed_p = 1; | |
252b5132 RH |
3370 | } |
3371 | ++i; | |
3372 | } | |
3373 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
3374 | } | |
3375 | ||
3376 | mips16_op_hash = hash_new (); | |
fc76e730 RS |
3377 | mips16_operands = XCNEWVEC (struct mips_operand_array, |
3378 | bfd_mips16_num_opcodes); | |
252b5132 RH |
3379 | |
3380 | i = 0; | |
3381 | while (i < bfd_mips16_num_opcodes) | |
3382 | { | |
3383 | const char *name = mips16_opcodes[i].name; | |
3384 | ||
17a2f251 | 3385 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
3386 | if (retval != NULL) |
3387 | as_fatal (_("internal: can't hash `%s': %s"), | |
3388 | mips16_opcodes[i].name, retval); | |
3389 | do | |
3390 | { | |
fc76e730 RS |
3391 | if (!validate_mips16_insn (&mips16_opcodes[i], &mips16_operands[i])) |
3392 | broken = 1; | |
1e915849 RS |
3393 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
3394 | { | |
3395 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
3396 | mips16_nop_insn.fixed_p = 1; | |
3397 | } | |
252b5132 RH |
3398 | ++i; |
3399 | } | |
3400 | while (i < bfd_mips16_num_opcodes | |
3401 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
3402 | } | |
3403 | ||
df58fc94 | 3404 | micromips_op_hash = hash_new (); |
fc76e730 RS |
3405 | micromips_operands = XCNEWVEC (struct mips_operand_array, |
3406 | bfd_micromips_num_opcodes); | |
df58fc94 RS |
3407 | |
3408 | i = 0; | |
3409 | while (i < bfd_micromips_num_opcodes) | |
3410 | { | |
3411 | const char *name = micromips_opcodes[i].name; | |
3412 | ||
3413 | retval = hash_insert (micromips_op_hash, name, | |
3414 | (void *) µmips_opcodes[i]); | |
3415 | if (retval != NULL) | |
3416 | as_fatal (_("internal: can't hash `%s': %s"), | |
3417 | micromips_opcodes[i].name, retval); | |
3418 | do | |
fc76e730 RS |
3419 | { |
3420 | struct mips_cl_insn *micromips_nop_insn; | |
3421 | ||
3422 | if (!validate_micromips_insn (µmips_opcodes[i], | |
3423 | µmips_operands[i])) | |
3424 | broken = 1; | |
3425 | ||
3426 | if (micromips_opcodes[i].pinfo != INSN_MACRO) | |
3427 | { | |
3428 | if (micromips_insn_length (micromips_opcodes + i) == 2) | |
3429 | micromips_nop_insn = µmips_nop16_insn; | |
3430 | else if (micromips_insn_length (micromips_opcodes + i) == 4) | |
3431 | micromips_nop_insn = µmips_nop32_insn; | |
3432 | else | |
3433 | continue; | |
3434 | ||
3435 | if (micromips_nop_insn->insn_mo == NULL | |
3436 | && strcmp (name, "nop") == 0) | |
3437 | { | |
3438 | create_insn (micromips_nop_insn, micromips_opcodes + i); | |
3439 | micromips_nop_insn->fixed_p = 1; | |
3440 | } | |
3441 | } | |
3442 | } | |
df58fc94 RS |
3443 | while (++i < bfd_micromips_num_opcodes |
3444 | && strcmp (micromips_opcodes[i].name, name) == 0); | |
3445 | } | |
3446 | ||
252b5132 | 3447 | if (broken) |
1661c76c | 3448 | as_fatal (_("broken assembler, no assembly attempted")); |
252b5132 RH |
3449 | |
3450 | /* We add all the general register names to the symbol table. This | |
3451 | helps us detect invalid uses of them. */ | |
707bfff6 TS |
3452 | for (i = 0; reg_names[i].name; i++) |
3453 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, | |
8fc4ee9b | 3454 | reg_names[i].num, /* & RNUM_MASK, */ |
707bfff6 TS |
3455 | &zero_address_frag)); |
3456 | if (HAVE_NEWABI) | |
3457 | for (i = 0; reg_names_n32n64[i].name; i++) | |
3458 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, | |
8fc4ee9b | 3459 | reg_names_n32n64[i].num, /* & RNUM_MASK, */ |
252b5132 | 3460 | &zero_address_frag)); |
707bfff6 TS |
3461 | else |
3462 | for (i = 0; reg_names_o32[i].name; i++) | |
3463 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, | |
8fc4ee9b | 3464 | reg_names_o32[i].num, /* & RNUM_MASK, */ |
6047c971 | 3465 | &zero_address_frag)); |
6047c971 | 3466 | |
14daeee3 RS |
3467 | for (i = 0; i < 32; i++) |
3468 | { | |
3469 | char regname[7]; | |
3470 | ||
3471 | /* R5900 VU0 floating-point register. */ | |
3472 | regname[sizeof (rename) - 1] = 0; | |
3473 | snprintf (regname, sizeof (regname) - 1, "$vf%d", i); | |
3474 | symbol_table_insert (symbol_new (regname, reg_section, | |
3475 | RTYPE_VF | i, &zero_address_frag)); | |
3476 | ||
3477 | /* R5900 VU0 integer register. */ | |
3478 | snprintf (regname, sizeof (regname) - 1, "$vi%d", i); | |
3479 | symbol_table_insert (symbol_new (regname, reg_section, | |
3480 | RTYPE_VI | i, &zero_address_frag)); | |
3481 | ||
56d438b1 CF |
3482 | /* MSA register. */ |
3483 | snprintf (regname, sizeof (regname) - 1, "$w%d", i); | |
3484 | symbol_table_insert (symbol_new (regname, reg_section, | |
3485 | RTYPE_MSA | i, &zero_address_frag)); | |
14daeee3 RS |
3486 | } |
3487 | ||
a92713e6 RS |
3488 | obstack_init (&mips_operand_tokens); |
3489 | ||
7d10b47d | 3490 | mips_no_prev_insn (); |
252b5132 RH |
3491 | |
3492 | mips_gprmask = 0; | |
3493 | mips_cprmask[0] = 0; | |
3494 | mips_cprmask[1] = 0; | |
3495 | mips_cprmask[2] = 0; | |
3496 | mips_cprmask[3] = 0; | |
3497 | ||
3498 | /* set the default alignment for the text section (2**2) */ | |
3499 | record_alignment (text_section, 2); | |
3500 | ||
4d0d148d | 3501 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 3502 | |
f3ded42a RS |
3503 | /* On a native system other than VxWorks, sections must be aligned |
3504 | to 16 byte boundaries. When configured for an embedded ELF | |
3505 | target, we don't bother. */ | |
3506 | if (strncmp (TARGET_OS, "elf", 3) != 0 | |
3507 | && strncmp (TARGET_OS, "vxworks", 7) != 0) | |
252b5132 | 3508 | { |
f3ded42a RS |
3509 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); |
3510 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
3511 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
3512 | } | |
252b5132 | 3513 | |
f3ded42a RS |
3514 | /* Create a .reginfo section for register masks and a .mdebug |
3515 | section for debugging information. */ | |
3516 | { | |
3517 | segT seg; | |
3518 | subsegT subseg; | |
3519 | flagword flags; | |
3520 | segT sec; | |
3521 | ||
3522 | seg = now_seg; | |
3523 | subseg = now_subseg; | |
3524 | ||
3525 | /* The ABI says this section should be loaded so that the | |
3526 | running program can access it. However, we don't load it | |
3527 | if we are configured for an embedded target */ | |
3528 | flags = SEC_READONLY | SEC_DATA; | |
3529 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
3530 | flags |= SEC_ALLOC | SEC_LOAD; | |
3531 | ||
3532 | if (mips_abi != N64_ABI) | |
252b5132 | 3533 | { |
f3ded42a | 3534 | sec = subseg_new (".reginfo", (subsegT) 0); |
bdaaa2e1 | 3535 | |
f3ded42a RS |
3536 | bfd_set_section_flags (stdoutput, sec, flags); |
3537 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
252b5132 | 3538 | |
f3ded42a RS |
3539 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
3540 | } | |
3541 | else | |
3542 | { | |
3543 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
3544 | .reginfo section. */ | |
3545 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
3546 | bfd_set_section_flags (stdoutput, sec, flags); | |
3547 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 3548 | |
f3ded42a RS |
3549 | /* Set up the option header. */ |
3550 | { | |
3551 | Elf_Internal_Options opthdr; | |
3552 | char *f; | |
3553 | ||
3554 | opthdr.kind = ODK_REGINFO; | |
3555 | opthdr.size = (sizeof (Elf_External_Options) | |
3556 | + sizeof (Elf64_External_RegInfo)); | |
3557 | opthdr.section = 0; | |
3558 | opthdr.info = 0; | |
3559 | f = frag_more (sizeof (Elf_External_Options)); | |
3560 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
3561 | (Elf_External_Options *) f); | |
3562 | ||
3563 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
3564 | } | |
3565 | } | |
252b5132 | 3566 | |
f3ded42a RS |
3567 | if (ECOFF_DEBUGGING) |
3568 | { | |
3569 | sec = subseg_new (".mdebug", (subsegT) 0); | |
3570 | (void) bfd_set_section_flags (stdoutput, sec, | |
3571 | SEC_HAS_CONTENTS | SEC_READONLY); | |
3572 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
252b5132 | 3573 | } |
f3ded42a RS |
3574 | else if (mips_flag_pdr) |
3575 | { | |
3576 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
3577 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
3578 | SEC_READONLY | SEC_RELOC | |
3579 | | SEC_DEBUGGING); | |
3580 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
3581 | } | |
3582 | ||
3583 | subseg_set (seg, subseg); | |
3584 | } | |
252b5132 RH |
3585 | |
3586 | if (! ECOFF_DEBUGGING) | |
3587 | md_obj_begin (); | |
71400594 RS |
3588 | |
3589 | if (mips_fix_vr4120) | |
3590 | init_vr4120_conflicts (); | |
252b5132 RH |
3591 | } |
3592 | ||
3593 | void | |
17a2f251 | 3594 | md_mips_end (void) |
252b5132 | 3595 | { |
02b1ab82 | 3596 | mips_emit_delays (); |
252b5132 RH |
3597 | if (! ECOFF_DEBUGGING) |
3598 | md_obj_end (); | |
3599 | } | |
3600 | ||
3601 | void | |
17a2f251 | 3602 | md_assemble (char *str) |
252b5132 RH |
3603 | { |
3604 | struct mips_cl_insn insn; | |
f6688943 TS |
3605 | bfd_reloc_code_real_type unused_reloc[3] |
3606 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
3607 | |
3608 | imm_expr.X_op = O_absent; | |
252b5132 | 3609 | offset_expr.X_op = O_absent; |
f6688943 TS |
3610 | offset_reloc[0] = BFD_RELOC_UNUSED; |
3611 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
3612 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 | 3613 | |
e1b47bd5 RS |
3614 | mips_mark_labels (); |
3615 | mips_assembling_insn = TRUE; | |
e3de51ce | 3616 | clear_insn_error (); |
e1b47bd5 | 3617 | |
252b5132 RH |
3618 | if (mips_opts.mips16) |
3619 | mips16_ip (str, &insn); | |
3620 | else | |
3621 | { | |
3622 | mips_ip (str, &insn); | |
beae10d5 KH |
3623 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
3624 | str, insn.insn_opcode)); | |
252b5132 RH |
3625 | } |
3626 | ||
e3de51ce RS |
3627 | if (insn_error.msg) |
3628 | report_insn_error (str); | |
e1b47bd5 | 3629 | else if (insn.insn_mo->pinfo == INSN_MACRO) |
252b5132 | 3630 | { |
584892a6 | 3631 | macro_start (); |
252b5132 RH |
3632 | if (mips_opts.mips16) |
3633 | mips16_macro (&insn); | |
3634 | else | |
833794fc | 3635 | macro (&insn, str); |
584892a6 | 3636 | macro_end (); |
252b5132 RH |
3637 | } |
3638 | else | |
3639 | { | |
77bd4346 | 3640 | if (offset_expr.X_op != O_absent) |
df58fc94 | 3641 | append_insn (&insn, &offset_expr, offset_reloc, FALSE); |
252b5132 | 3642 | else |
df58fc94 | 3643 | append_insn (&insn, NULL, unused_reloc, FALSE); |
252b5132 | 3644 | } |
e1b47bd5 RS |
3645 | |
3646 | mips_assembling_insn = FALSE; | |
252b5132 RH |
3647 | } |
3648 | ||
738e5348 RS |
3649 | /* Convenience functions for abstracting away the differences between |
3650 | MIPS16 and non-MIPS16 relocations. */ | |
3651 | ||
3652 | static inline bfd_boolean | |
3653 | mips16_reloc_p (bfd_reloc_code_real_type reloc) | |
3654 | { | |
3655 | switch (reloc) | |
3656 | { | |
3657 | case BFD_RELOC_MIPS16_JMP: | |
3658 | case BFD_RELOC_MIPS16_GPREL: | |
3659 | case BFD_RELOC_MIPS16_GOT16: | |
3660 | case BFD_RELOC_MIPS16_CALL16: | |
3661 | case BFD_RELOC_MIPS16_HI16_S: | |
3662 | case BFD_RELOC_MIPS16_HI16: | |
3663 | case BFD_RELOC_MIPS16_LO16: | |
3664 | return TRUE; | |
3665 | ||
3666 | default: | |
3667 | return FALSE; | |
3668 | } | |
3669 | } | |
3670 | ||
df58fc94 RS |
3671 | static inline bfd_boolean |
3672 | micromips_reloc_p (bfd_reloc_code_real_type reloc) | |
3673 | { | |
3674 | switch (reloc) | |
3675 | { | |
3676 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
3677 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
3678 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
3679 | case BFD_RELOC_MICROMIPS_GPREL16: | |
3680 | case BFD_RELOC_MICROMIPS_JMP: | |
3681 | case BFD_RELOC_MICROMIPS_HI16: | |
3682 | case BFD_RELOC_MICROMIPS_HI16_S: | |
3683 | case BFD_RELOC_MICROMIPS_LO16: | |
3684 | case BFD_RELOC_MICROMIPS_LITERAL: | |
3685 | case BFD_RELOC_MICROMIPS_GOT16: | |
3686 | case BFD_RELOC_MICROMIPS_CALL16: | |
3687 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
3688 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
3689 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
3690 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
3691 | case BFD_RELOC_MICROMIPS_SUB: | |
3692 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
3693 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
3694 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
3695 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
3696 | case BFD_RELOC_MICROMIPS_HIGHER: | |
3697 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
3698 | case BFD_RELOC_MICROMIPS_JALR: | |
3699 | return TRUE; | |
3700 | ||
3701 | default: | |
3702 | return FALSE; | |
3703 | } | |
3704 | } | |
3705 | ||
2309ddf2 MR |
3706 | static inline bfd_boolean |
3707 | jmp_reloc_p (bfd_reloc_code_real_type reloc) | |
3708 | { | |
3709 | return reloc == BFD_RELOC_MIPS_JMP || reloc == BFD_RELOC_MICROMIPS_JMP; | |
3710 | } | |
3711 | ||
738e5348 RS |
3712 | static inline bfd_boolean |
3713 | got16_reloc_p (bfd_reloc_code_real_type reloc) | |
3714 | { | |
2309ddf2 | 3715 | return (reloc == BFD_RELOC_MIPS_GOT16 || reloc == BFD_RELOC_MIPS16_GOT16 |
df58fc94 | 3716 | || reloc == BFD_RELOC_MICROMIPS_GOT16); |
738e5348 RS |
3717 | } |
3718 | ||
3719 | static inline bfd_boolean | |
3720 | hi16_reloc_p (bfd_reloc_code_real_type reloc) | |
3721 | { | |
2309ddf2 | 3722 | return (reloc == BFD_RELOC_HI16_S || reloc == BFD_RELOC_MIPS16_HI16_S |
df58fc94 | 3723 | || reloc == BFD_RELOC_MICROMIPS_HI16_S); |
738e5348 RS |
3724 | } |
3725 | ||
3726 | static inline bfd_boolean | |
3727 | lo16_reloc_p (bfd_reloc_code_real_type reloc) | |
3728 | { | |
2309ddf2 | 3729 | return (reloc == BFD_RELOC_LO16 || reloc == BFD_RELOC_MIPS16_LO16 |
df58fc94 RS |
3730 | || reloc == BFD_RELOC_MICROMIPS_LO16); |
3731 | } | |
3732 | ||
df58fc94 RS |
3733 | static inline bfd_boolean |
3734 | jalr_reloc_p (bfd_reloc_code_real_type reloc) | |
3735 | { | |
2309ddf2 | 3736 | return reloc == BFD_RELOC_MIPS_JALR || reloc == BFD_RELOC_MICROMIPS_JALR; |
738e5348 RS |
3737 | } |
3738 | ||
f2ae14a1 RS |
3739 | static inline bfd_boolean |
3740 | gprel16_reloc_p (bfd_reloc_code_real_type reloc) | |
3741 | { | |
3742 | return (reloc == BFD_RELOC_GPREL16 || reloc == BFD_RELOC_MIPS16_GPREL | |
3743 | || reloc == BFD_RELOC_MICROMIPS_GPREL16); | |
3744 | } | |
3745 | ||
2de39019 CM |
3746 | /* Return true if RELOC is a PC-relative relocation that does not have |
3747 | full address range. */ | |
3748 | ||
3749 | static inline bfd_boolean | |
3750 | limited_pcrel_reloc_p (bfd_reloc_code_real_type reloc) | |
3751 | { | |
3752 | switch (reloc) | |
3753 | { | |
3754 | case BFD_RELOC_16_PCREL_S2: | |
3755 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
3756 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
3757 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
3758 | return TRUE; | |
3759 | ||
b47468a6 CM |
3760 | case BFD_RELOC_32_PCREL: |
3761 | return HAVE_64BIT_ADDRESSES; | |
3762 | ||
2de39019 CM |
3763 | default: |
3764 | return FALSE; | |
3765 | } | |
3766 | } | |
b47468a6 | 3767 | |
5919d012 | 3768 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
3769 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
3770 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
3771 | |
3772 | static inline bfd_boolean | |
17a2f251 | 3773 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 3774 | { |
3b91255e | 3775 | return (HAVE_IN_PLACE_ADDENDS |
738e5348 | 3776 | && (hi16_reloc_p (reloc) |
0a44bf69 RS |
3777 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); |
3778 | all GOT16 relocations evaluate to "G". */ | |
738e5348 RS |
3779 | || (got16_reloc_p (reloc) && mips_pic != VXWORKS_PIC))); |
3780 | } | |
3781 | ||
3782 | /* Return the type of %lo() reloc needed by RELOC, given that | |
3783 | reloc_needs_lo_p. */ | |
3784 | ||
3785 | static inline bfd_reloc_code_real_type | |
3786 | matching_lo_reloc (bfd_reloc_code_real_type reloc) | |
3787 | { | |
df58fc94 RS |
3788 | return (mips16_reloc_p (reloc) ? BFD_RELOC_MIPS16_LO16 |
3789 | : (micromips_reloc_p (reloc) ? BFD_RELOC_MICROMIPS_LO16 | |
3790 | : BFD_RELOC_LO16)); | |
5919d012 RS |
3791 | } |
3792 | ||
3793 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
3794 | relocation. */ | |
3795 | ||
3796 | static inline bfd_boolean | |
17a2f251 | 3797 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
3798 | { |
3799 | return (fixp->fx_next != NULL | |
738e5348 | 3800 | && fixp->fx_next->fx_r_type == matching_lo_reloc (fixp->fx_r_type) |
5919d012 RS |
3801 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
3802 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
3803 | } | |
3804 | ||
462427c4 RS |
3805 | /* Move all labels in LABELS to the current insertion point. TEXT_P |
3806 | says whether the labels refer to text or data. */ | |
404a8071 RS |
3807 | |
3808 | static void | |
462427c4 | 3809 | mips_move_labels (struct insn_label_list *labels, bfd_boolean text_p) |
404a8071 RS |
3810 | { |
3811 | struct insn_label_list *l; | |
3812 | valueT val; | |
3813 | ||
462427c4 | 3814 | for (l = labels; l != NULL; l = l->next) |
404a8071 | 3815 | { |
9c2799c2 | 3816 | gas_assert (S_GET_SEGMENT (l->label) == now_seg); |
404a8071 RS |
3817 | symbol_set_frag (l->label, frag_now); |
3818 | val = (valueT) frag_now_fix (); | |
df58fc94 | 3819 | /* MIPS16/microMIPS text labels are stored as odd. */ |
462427c4 | 3820 | if (text_p && HAVE_CODE_COMPRESSION) |
404a8071 RS |
3821 | ++val; |
3822 | S_SET_VALUE (l->label, val); | |
3823 | } | |
3824 | } | |
3825 | ||
462427c4 RS |
3826 | /* Move all labels in insn_labels to the current insertion point |
3827 | and treat them as text labels. */ | |
3828 | ||
3829 | static void | |
3830 | mips_move_text_labels (void) | |
3831 | { | |
3832 | mips_move_labels (seg_info (now_seg)->label_list, TRUE); | |
3833 | } | |
3834 | ||
5f0fe04b TS |
3835 | static bfd_boolean |
3836 | s_is_linkonce (symbolS *sym, segT from_seg) | |
3837 | { | |
3838 | bfd_boolean linkonce = FALSE; | |
3839 | segT symseg = S_GET_SEGMENT (sym); | |
3840 | ||
3841 | if (symseg != from_seg && !S_IS_LOCAL (sym)) | |
3842 | { | |
3843 | if ((bfd_get_section_flags (stdoutput, symseg) & SEC_LINK_ONCE)) | |
3844 | linkonce = TRUE; | |
5f0fe04b TS |
3845 | /* The GNU toolchain uses an extension for ELF: a section |
3846 | beginning with the magic string .gnu.linkonce is a | |
3847 | linkonce section. */ | |
3848 | if (strncmp (segment_name (symseg), ".gnu.linkonce", | |
3849 | sizeof ".gnu.linkonce" - 1) == 0) | |
3850 | linkonce = TRUE; | |
5f0fe04b TS |
3851 | } |
3852 | return linkonce; | |
3853 | } | |
3854 | ||
e1b47bd5 | 3855 | /* Mark MIPS16 or microMIPS instruction label LABEL. This permits the |
df58fc94 RS |
3856 | linker to handle them specially, such as generating jalx instructions |
3857 | when needed. We also make them odd for the duration of the assembly, | |
3858 | in order to generate the right sort of code. We will make them even | |
252b5132 RH |
3859 | in the adjust_symtab routine, while leaving them marked. This is |
3860 | convenient for the debugger and the disassembler. The linker knows | |
3861 | to make them odd again. */ | |
3862 | ||
3863 | static void | |
e1b47bd5 | 3864 | mips_compressed_mark_label (symbolS *label) |
252b5132 | 3865 | { |
df58fc94 | 3866 | gas_assert (HAVE_CODE_COMPRESSION); |
a8dbcb85 | 3867 | |
f3ded42a RS |
3868 | if (mips_opts.mips16) |
3869 | S_SET_OTHER (label, ELF_ST_SET_MIPS16 (S_GET_OTHER (label))); | |
3870 | else | |
3871 | S_SET_OTHER (label, ELF_ST_SET_MICROMIPS (S_GET_OTHER (label))); | |
e1b47bd5 RS |
3872 | if ((S_GET_VALUE (label) & 1) == 0 |
3873 | /* Don't adjust the address if the label is global or weak, or | |
3874 | in a link-once section, since we'll be emitting symbol reloc | |
3875 | references to it which will be patched up by the linker, and | |
3876 | the final value of the symbol may or may not be MIPS16/microMIPS. */ | |
3877 | && !S_IS_WEAK (label) | |
3878 | && !S_IS_EXTERNAL (label) | |
3879 | && !s_is_linkonce (label, now_seg)) | |
3880 | S_SET_VALUE (label, S_GET_VALUE (label) | 1); | |
3881 | } | |
3882 | ||
3883 | /* Mark preceding MIPS16 or microMIPS instruction labels. */ | |
3884 | ||
3885 | static void | |
3886 | mips_compressed_mark_labels (void) | |
3887 | { | |
3888 | struct insn_label_list *l; | |
3889 | ||
3890 | for (l = seg_info (now_seg)->label_list; l != NULL; l = l->next) | |
3891 | mips_compressed_mark_label (l->label); | |
252b5132 RH |
3892 | } |
3893 | ||
4d7206a2 RS |
3894 | /* End the current frag. Make it a variant frag and record the |
3895 | relaxation info. */ | |
3896 | ||
3897 | static void | |
3898 | relax_close_frag (void) | |
3899 | { | |
584892a6 | 3900 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 3901 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 3902 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
3903 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
3904 | ||
3905 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
3906 | mips_relax.first_fixup = 0; | |
3907 | } | |
3908 | ||
3909 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
3910 | See the comment above RELAX_ENCODE for more details. */ | |
3911 | ||
3912 | static void | |
3913 | relax_start (symbolS *symbol) | |
3914 | { | |
9c2799c2 | 3915 | gas_assert (mips_relax.sequence == 0); |
4d7206a2 RS |
3916 | mips_relax.sequence = 1; |
3917 | mips_relax.symbol = symbol; | |
3918 | } | |
3919 | ||
3920 | /* Start generating the second version of a relaxable sequence. | |
3921 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
3922 | |
3923 | static void | |
4d7206a2 RS |
3924 | relax_switch (void) |
3925 | { | |
9c2799c2 | 3926 | gas_assert (mips_relax.sequence == 1); |
4d7206a2 RS |
3927 | mips_relax.sequence = 2; |
3928 | } | |
3929 | ||
3930 | /* End the current relaxable sequence. */ | |
3931 | ||
3932 | static void | |
3933 | relax_end (void) | |
3934 | { | |
9c2799c2 | 3935 | gas_assert (mips_relax.sequence == 2); |
4d7206a2 RS |
3936 | relax_close_frag (); |
3937 | mips_relax.sequence = 0; | |
3938 | } | |
3939 | ||
11625dd8 RS |
3940 | /* Return true if IP is a delayed branch or jump. */ |
3941 | ||
3942 | static inline bfd_boolean | |
3943 | delayed_branch_p (const struct mips_cl_insn *ip) | |
3944 | { | |
3945 | return (ip->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY | |
3946 | | INSN_COND_BRANCH_DELAY | |
3947 | | INSN_COND_BRANCH_LIKELY)) != 0; | |
3948 | } | |
3949 | ||
3950 | /* Return true if IP is a compact branch or jump. */ | |
3951 | ||
3952 | static inline bfd_boolean | |
3953 | compact_branch_p (const struct mips_cl_insn *ip) | |
3954 | { | |
26545944 RS |
3955 | return (ip->insn_mo->pinfo2 & (INSN2_UNCOND_BRANCH |
3956 | | INSN2_COND_BRANCH)) != 0; | |
11625dd8 RS |
3957 | } |
3958 | ||
3959 | /* Return true if IP is an unconditional branch or jump. */ | |
3960 | ||
3961 | static inline bfd_boolean | |
3962 | uncond_branch_p (const struct mips_cl_insn *ip) | |
3963 | { | |
3964 | return ((ip->insn_mo->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0 | |
26545944 | 3965 | || (ip->insn_mo->pinfo2 & INSN2_UNCOND_BRANCH) != 0); |
11625dd8 RS |
3966 | } |
3967 | ||
3968 | /* Return true if IP is a branch-likely instruction. */ | |
3969 | ||
3970 | static inline bfd_boolean | |
3971 | branch_likely_p (const struct mips_cl_insn *ip) | |
3972 | { | |
3973 | return (ip->insn_mo->pinfo & INSN_COND_BRANCH_LIKELY) != 0; | |
3974 | } | |
3975 | ||
14fe068b RS |
3976 | /* Return the type of nop that should be used to fill the delay slot |
3977 | of delayed branch IP. */ | |
3978 | ||
3979 | static struct mips_cl_insn * | |
3980 | get_delay_slot_nop (const struct mips_cl_insn *ip) | |
3981 | { | |
3982 | if (mips_opts.micromips | |
3983 | && (ip->insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
3984 | return µmips_nop32_insn; | |
3985 | return NOP_INSN; | |
3986 | } | |
3987 | ||
fc76e730 RS |
3988 | /* Return a mask that has bit N set if OPCODE reads the register(s) |
3989 | in operand N. */ | |
df58fc94 RS |
3990 | |
3991 | static unsigned int | |
fc76e730 | 3992 | insn_read_mask (const struct mips_opcode *opcode) |
df58fc94 | 3993 | { |
fc76e730 RS |
3994 | return (opcode->pinfo & INSN_READ_ALL) >> INSN_READ_SHIFT; |
3995 | } | |
df58fc94 | 3996 | |
fc76e730 RS |
3997 | /* Return a mask that has bit N set if OPCODE writes to the register(s) |
3998 | in operand N. */ | |
3999 | ||
4000 | static unsigned int | |
4001 | insn_write_mask (const struct mips_opcode *opcode) | |
4002 | { | |
4003 | return (opcode->pinfo & INSN_WRITE_ALL) >> INSN_WRITE_SHIFT; | |
4004 | } | |
4005 | ||
4006 | /* Return a mask of the registers specified by operand OPERAND of INSN. | |
4007 | Ignore registers of type OP_REG_<t> unless bit OP_REG_<t> of TYPE_MASK | |
4008 | is set. */ | |
4009 | ||
4010 | static unsigned int | |
4011 | operand_reg_mask (const struct mips_cl_insn *insn, | |
4012 | const struct mips_operand *operand, | |
4013 | unsigned int type_mask) | |
4014 | { | |
4015 | unsigned int uval, vsel; | |
4016 | ||
4017 | switch (operand->type) | |
df58fc94 | 4018 | { |
fc76e730 RS |
4019 | case OP_INT: |
4020 | case OP_MAPPED_INT: | |
4021 | case OP_MSB: | |
4022 | case OP_PCREL: | |
4023 | case OP_PERF_REG: | |
4024 | case OP_ADDIUSP_INT: | |
4025 | case OP_ENTRY_EXIT_LIST: | |
4026 | case OP_REPEAT_DEST_REG: | |
4027 | case OP_REPEAT_PREV_REG: | |
4028 | case OP_PC: | |
14daeee3 RS |
4029 | case OP_VU0_SUFFIX: |
4030 | case OP_VU0_MATCH_SUFFIX: | |
56d438b1 | 4031 | case OP_IMM_INDEX: |
fc76e730 RS |
4032 | abort (); |
4033 | ||
4034 | case OP_REG: | |
0f35dbc4 | 4035 | case OP_OPTIONAL_REG: |
fc76e730 RS |
4036 | { |
4037 | const struct mips_reg_operand *reg_op; | |
4038 | ||
4039 | reg_op = (const struct mips_reg_operand *) operand; | |
4040 | if (!(type_mask & (1 << reg_op->reg_type))) | |
4041 | return 0; | |
4042 | uval = insn_extract_operand (insn, operand); | |
4043 | return 1 << mips_decode_reg_operand (reg_op, uval); | |
4044 | } | |
4045 | ||
4046 | case OP_REG_PAIR: | |
4047 | { | |
4048 | const struct mips_reg_pair_operand *pair_op; | |
4049 | ||
4050 | pair_op = (const struct mips_reg_pair_operand *) operand; | |
4051 | if (!(type_mask & (1 << pair_op->reg_type))) | |
4052 | return 0; | |
4053 | uval = insn_extract_operand (insn, operand); | |
4054 | return (1 << pair_op->reg1_map[uval]) | (1 << pair_op->reg2_map[uval]); | |
4055 | } | |
4056 | ||
4057 | case OP_CLO_CLZ_DEST: | |
4058 | if (!(type_mask & (1 << OP_REG_GP))) | |
4059 | return 0; | |
4060 | uval = insn_extract_operand (insn, operand); | |
4061 | return (1 << (uval & 31)) | (1 << (uval >> 5)); | |
4062 | ||
4063 | case OP_LWM_SWM_LIST: | |
4064 | abort (); | |
4065 | ||
4066 | case OP_SAVE_RESTORE_LIST: | |
4067 | abort (); | |
4068 | ||
4069 | case OP_MDMX_IMM_REG: | |
4070 | if (!(type_mask & (1 << OP_REG_VEC))) | |
4071 | return 0; | |
4072 | uval = insn_extract_operand (insn, operand); | |
4073 | vsel = uval >> 5; | |
4074 | if ((vsel & 0x18) == 0x18) | |
4075 | return 0; | |
4076 | return 1 << (uval & 31); | |
56d438b1 CF |
4077 | |
4078 | case OP_REG_INDEX: | |
4079 | if (!(type_mask & (1 << OP_REG_GP))) | |
4080 | return 0; | |
4081 | return 1 << insn_extract_operand (insn, operand); | |
df58fc94 | 4082 | } |
fc76e730 RS |
4083 | abort (); |
4084 | } | |
4085 | ||
4086 | /* Return a mask of the registers specified by operands OPNO_MASK of INSN, | |
4087 | where bit N of OPNO_MASK is set if operand N should be included. | |
4088 | Ignore registers of type OP_REG_<t> unless bit OP_REG_<t> of TYPE_MASK | |
4089 | is set. */ | |
4090 | ||
4091 | static unsigned int | |
4092 | insn_reg_mask (const struct mips_cl_insn *insn, | |
4093 | unsigned int type_mask, unsigned int opno_mask) | |
4094 | { | |
4095 | unsigned int opno, reg_mask; | |
4096 | ||
4097 | opno = 0; | |
4098 | reg_mask = 0; | |
4099 | while (opno_mask != 0) | |
4100 | { | |
4101 | if (opno_mask & 1) | |
4102 | reg_mask |= operand_reg_mask (insn, insn_opno (insn, opno), type_mask); | |
4103 | opno_mask >>= 1; | |
4104 | opno += 1; | |
4105 | } | |
4106 | return reg_mask; | |
df58fc94 RS |
4107 | } |
4108 | ||
4c260379 RS |
4109 | /* Return the mask of core registers that IP reads. */ |
4110 | ||
4111 | static unsigned int | |
4112 | gpr_read_mask (const struct mips_cl_insn *ip) | |
4113 | { | |
4114 | unsigned long pinfo, pinfo2; | |
4115 | unsigned int mask; | |
4116 | ||
fc76e730 | 4117 | mask = insn_reg_mask (ip, 1 << OP_REG_GP, insn_read_mask (ip->insn_mo)); |
4c260379 RS |
4118 | pinfo = ip->insn_mo->pinfo; |
4119 | pinfo2 = ip->insn_mo->pinfo2; | |
fc76e730 | 4120 | if (pinfo & INSN_UDI) |
4c260379 | 4121 | { |
fc76e730 RS |
4122 | /* UDI instructions have traditionally been assumed to read RS |
4123 | and RT. */ | |
4124 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); | |
4125 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); | |
4c260379 | 4126 | } |
fc76e730 RS |
4127 | if (pinfo & INSN_READ_GPR_24) |
4128 | mask |= 1 << 24; | |
4129 | if (pinfo2 & INSN2_READ_GPR_16) | |
4130 | mask |= 1 << 16; | |
4131 | if (pinfo2 & INSN2_READ_SP) | |
4132 | mask |= 1 << SP; | |
26545944 | 4133 | if (pinfo2 & INSN2_READ_GPR_31) |
fc76e730 | 4134 | mask |= 1 << 31; |
fe35f09f RS |
4135 | /* Don't include register 0. */ |
4136 | return mask & ~1; | |
4c260379 RS |
4137 | } |
4138 | ||
4139 | /* Return the mask of core registers that IP writes. */ | |
4140 | ||
4141 | static unsigned int | |
4142 | gpr_write_mask (const struct mips_cl_insn *ip) | |
4143 | { | |
4144 | unsigned long pinfo, pinfo2; | |
4145 | unsigned int mask; | |
4146 | ||
fc76e730 | 4147 | mask = insn_reg_mask (ip, 1 << OP_REG_GP, insn_write_mask (ip->insn_mo)); |
4c260379 RS |
4148 | pinfo = ip->insn_mo->pinfo; |
4149 | pinfo2 = ip->insn_mo->pinfo2; | |
fc76e730 RS |
4150 | if (pinfo & INSN_WRITE_GPR_24) |
4151 | mask |= 1 << 24; | |
4152 | if (pinfo & INSN_WRITE_GPR_31) | |
4153 | mask |= 1 << 31; | |
4154 | if (pinfo & INSN_UDI) | |
4155 | /* UDI instructions have traditionally been assumed to write to RD. */ | |
4156 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); | |
4157 | if (pinfo2 & INSN2_WRITE_SP) | |
4158 | mask |= 1 << SP; | |
fe35f09f RS |
4159 | /* Don't include register 0. */ |
4160 | return mask & ~1; | |
4c260379 RS |
4161 | } |
4162 | ||
4163 | /* Return the mask of floating-point registers that IP reads. */ | |
4164 | ||
4165 | static unsigned int | |
4166 | fpr_read_mask (const struct mips_cl_insn *ip) | |
4167 | { | |
fc76e730 | 4168 | unsigned long pinfo; |
4c260379 RS |
4169 | unsigned int mask; |
4170 | ||
9d5de888 CF |
4171 | mask = insn_reg_mask (ip, ((1 << OP_REG_FP) | (1 << OP_REG_VEC) |
4172 | | (1 << OP_REG_MSA)), | |
fc76e730 | 4173 | insn_read_mask (ip->insn_mo)); |
4c260379 | 4174 | pinfo = ip->insn_mo->pinfo; |
4c260379 RS |
4175 | /* Conservatively treat all operands to an FP_D instruction are doubles. |
4176 | (This is overly pessimistic for things like cvt.d.s.) */ | |
4177 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
4178 | mask |= mask << 1; | |
4179 | return mask; | |
4180 | } | |
4181 | ||
4182 | /* Return the mask of floating-point registers that IP writes. */ | |
4183 | ||
4184 | static unsigned int | |
4185 | fpr_write_mask (const struct mips_cl_insn *ip) | |
4186 | { | |
fc76e730 | 4187 | unsigned long pinfo; |
4c260379 RS |
4188 | unsigned int mask; |
4189 | ||
9d5de888 CF |
4190 | mask = insn_reg_mask (ip, ((1 << OP_REG_FP) | (1 << OP_REG_VEC) |
4191 | | (1 << OP_REG_MSA)), | |
fc76e730 | 4192 | insn_write_mask (ip->insn_mo)); |
4c260379 | 4193 | pinfo = ip->insn_mo->pinfo; |
4c260379 RS |
4194 | /* Conservatively treat all operands to an FP_D instruction are doubles. |
4195 | (This is overly pessimistic for things like cvt.s.d.) */ | |
4196 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
4197 | mask |= mask << 1; | |
4198 | return mask; | |
4199 | } | |
4200 | ||
a1d78564 RS |
4201 | /* Operand OPNUM of INSN is an odd-numbered floating-point register. |
4202 | Check whether that is allowed. */ | |
4203 | ||
4204 | static bfd_boolean | |
4205 | mips_oddfpreg_ok (const struct mips_opcode *insn, int opnum) | |
4206 | { | |
4207 | const char *s = insn->name; | |
4208 | ||
4209 | if (insn->pinfo == INSN_MACRO) | |
4210 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
4211 | return TRUE; | |
4212 | ||
4213 | if (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa) || mips_opts.arch == CPU_R5900) | |
4214 | { | |
4215 | /* Allow odd registers for single-precision ops. */ | |
4216 | switch (insn->pinfo & (FP_S | FP_D)) | |
4217 | { | |
4218 | case FP_S: | |
4219 | case 0: | |
4220 | return TRUE; | |
4221 | case FP_D: | |
4222 | return FALSE; | |
4223 | default: | |
4224 | break; | |
4225 | } | |
4226 | ||
4227 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ | |
4228 | s = strchr (insn->name, '.'); | |
4229 | if (s != NULL && opnum == 2) | |
4230 | s = strchr (s + 1, '.'); | |
4231 | return (s != NULL && (s[1] == 'w' || s[1] == 's')); | |
4232 | } | |
4233 | ||
4234 | /* Single-precision coprocessor loads and moves are OK too. */ | |
4235 | if ((insn->pinfo & FP_S) | |
4236 | && (insn->pinfo & (INSN_COPROC_MEMORY_DELAY | INSN_STORE_MEMORY | |
4237 | | INSN_LOAD_COPROC_DELAY | INSN_COPROC_MOVE_DELAY))) | |
4238 | return TRUE; | |
4239 | ||
4240 | return FALSE; | |
4241 | } | |
4242 | ||
a1d78564 RS |
4243 | /* Information about an instruction argument that we're trying to match. */ |
4244 | struct mips_arg_info | |
4245 | { | |
4246 | /* The instruction so far. */ | |
4247 | struct mips_cl_insn *insn; | |
4248 | ||
a92713e6 RS |
4249 | /* The first unconsumed operand token. */ |
4250 | struct mips_operand_token *token; | |
4251 | ||
a1d78564 RS |
4252 | /* The 1-based operand number, in terms of insn->insn_mo->args. */ |
4253 | int opnum; | |
4254 | ||
4255 | /* The 1-based argument number, for error reporting. This does not | |
4256 | count elided optional registers, etc.. */ | |
4257 | int argnum; | |
4258 | ||
4259 | /* The last OP_REG operand seen, or ILLEGAL_REG if none. */ | |
4260 | unsigned int last_regno; | |
4261 | ||
4262 | /* If the first operand was an OP_REG, this is the register that it | |
4263 | specified, otherwise it is ILLEGAL_REG. */ | |
4264 | unsigned int dest_regno; | |
4265 | ||
4266 | /* The value of the last OP_INT operand. Only used for OP_MSB, | |
4267 | where it gives the lsb position. */ | |
4268 | unsigned int last_op_int; | |
4269 | ||
60f20e8b RS |
4270 | /* If true, match routines should assume that no later instruction |
4271 | alternative matches and should therefore be as accomodating as | |
4272 | possible. Match routines should not report errors if something | |
4273 | is only invalid for !LAX_MATCH. */ | |
4274 | bfd_boolean lax_match; | |
a1d78564 | 4275 | |
a1d78564 RS |
4276 | /* True if a reference to the current AT register was seen. */ |
4277 | bfd_boolean seen_at; | |
4278 | }; | |
4279 | ||
1a00e612 RS |
4280 | /* Record that the argument is out of range. */ |
4281 | ||
4282 | static void | |
4283 | match_out_of_range (struct mips_arg_info *arg) | |
4284 | { | |
4285 | set_insn_error_i (arg->argnum, _("operand %d out of range"), arg->argnum); | |
4286 | } | |
4287 | ||
4288 | /* Record that the argument isn't constant but needs to be. */ | |
4289 | ||
4290 | static void | |
4291 | match_not_constant (struct mips_arg_info *arg) | |
4292 | { | |
4293 | set_insn_error_i (arg->argnum, _("operand %d must be constant"), | |
4294 | arg->argnum); | |
4295 | } | |
4296 | ||
a92713e6 RS |
4297 | /* Try to match an OT_CHAR token for character CH. Consume the token |
4298 | and return true on success, otherwise return false. */ | |
a1d78564 | 4299 | |
a92713e6 RS |
4300 | static bfd_boolean |
4301 | match_char (struct mips_arg_info *arg, char ch) | |
a1d78564 | 4302 | { |
a92713e6 RS |
4303 | if (arg->token->type == OT_CHAR && arg->token->u.ch == ch) |
4304 | { | |
4305 | ++arg->token; | |
4306 | if (ch == ',') | |
4307 | arg->argnum += 1; | |
4308 | return TRUE; | |
4309 | } | |
4310 | return FALSE; | |
4311 | } | |
a1d78564 | 4312 | |
a92713e6 RS |
4313 | /* Try to get an expression from the next tokens in ARG. Consume the |
4314 | tokens and return true on success, storing the expression value in | |
4315 | VALUE and relocation types in R. */ | |
4316 | ||
4317 | static bfd_boolean | |
4318 | match_expression (struct mips_arg_info *arg, expressionS *value, | |
4319 | bfd_reloc_code_real_type *r) | |
4320 | { | |
d436c1c2 RS |
4321 | /* If the next token is a '(' that was parsed as being part of a base |
4322 | expression, assume we have an elided offset. The later match will fail | |
4323 | if this turns out to be wrong. */ | |
4324 | if (arg->token->type == OT_CHAR && arg->token->u.ch == '(') | |
a1d78564 | 4325 | { |
d436c1c2 RS |
4326 | value->X_op = O_constant; |
4327 | value->X_add_number = 0; | |
4328 | r[0] = r[1] = r[2] = BFD_RELOC_UNUSED; | |
a92713e6 RS |
4329 | return TRUE; |
4330 | } | |
4331 | ||
d436c1c2 RS |
4332 | /* Reject register-based expressions such as "0+$2" and "(($2))". |
4333 | For plain registers the default error seems more appropriate. */ | |
4334 | if (arg->token->type == OT_INTEGER | |
4335 | && arg->token->u.integer.value.X_op == O_register) | |
a92713e6 | 4336 | { |
d436c1c2 RS |
4337 | set_insn_error (arg->argnum, _("register value used as expression")); |
4338 | return FALSE; | |
a1d78564 | 4339 | } |
d436c1c2 RS |
4340 | |
4341 | if (arg->token->type == OT_INTEGER) | |
a92713e6 | 4342 | { |
d436c1c2 RS |
4343 | *value = arg->token->u.integer.value; |
4344 | memcpy (r, arg->token->u.integer.relocs, 3 * sizeof (*r)); | |
4345 | ++arg->token; | |
4346 | return TRUE; | |
a92713e6 | 4347 | } |
a92713e6 | 4348 | |
d436c1c2 RS |
4349 | set_insn_error_i |
4350 | (arg->argnum, _("operand %d must be an immediate expression"), | |
4351 | arg->argnum); | |
4352 | return FALSE; | |
a92713e6 RS |
4353 | } |
4354 | ||
4355 | /* Try to get a constant expression from the next tokens in ARG. Consume | |
4356 | the tokens and return return true on success, storing the constant value | |
4357 | in *VALUE. Use FALLBACK as the value if the match succeeded with an | |
4358 | error. */ | |
4359 | ||
4360 | static bfd_boolean | |
1a00e612 | 4361 | match_const_int (struct mips_arg_info *arg, offsetT *value) |
a92713e6 RS |
4362 | { |
4363 | expressionS ex; | |
4364 | bfd_reloc_code_real_type r[3]; | |
a1d78564 | 4365 | |
a92713e6 RS |
4366 | if (!match_expression (arg, &ex, r)) |
4367 | return FALSE; | |
4368 | ||
4369 | if (r[0] == BFD_RELOC_UNUSED && ex.X_op == O_constant) | |
a1d78564 RS |
4370 | *value = ex.X_add_number; |
4371 | else | |
4372 | { | |
1a00e612 RS |
4373 | match_not_constant (arg); |
4374 | return FALSE; | |
a1d78564 | 4375 | } |
a92713e6 | 4376 | return TRUE; |
a1d78564 RS |
4377 | } |
4378 | ||
4379 | /* Return the RTYPE_* flags for a register operand of type TYPE that | |
4380 | appears in instruction OPCODE. */ | |
4381 | ||
4382 | static unsigned int | |
4383 | convert_reg_type (const struct mips_opcode *opcode, | |
4384 | enum mips_reg_operand_type type) | |
4385 | { | |
4386 | switch (type) | |
4387 | { | |
4388 | case OP_REG_GP: | |
4389 | return RTYPE_NUM | RTYPE_GP; | |
4390 | ||
4391 | case OP_REG_FP: | |
4392 | /* Allow vector register names for MDMX if the instruction is a 64-bit | |
4393 | FPR load, store or move (including moves to and from GPRs). */ | |
4394 | if ((mips_opts.ase & ASE_MDMX) | |
4395 | && (opcode->pinfo & FP_D) | |
4396 | && (opcode->pinfo & (INSN_COPROC_MOVE_DELAY | |
4397 | | INSN_COPROC_MEMORY_DELAY | |
4398 | | INSN_LOAD_COPROC_DELAY | |
67dc82bc | 4399 | | INSN_LOAD_MEMORY |
a1d78564 RS |
4400 | | INSN_STORE_MEMORY))) |
4401 | return RTYPE_FPU | RTYPE_VEC; | |
4402 | return RTYPE_FPU; | |
4403 | ||
4404 | case OP_REG_CCC: | |
4405 | if (opcode->pinfo & (FP_D | FP_S)) | |
4406 | return RTYPE_CCC | RTYPE_FCC; | |
4407 | return RTYPE_CCC; | |
4408 | ||
4409 | case OP_REG_VEC: | |
4410 | if (opcode->membership & INSN_5400) | |
4411 | return RTYPE_FPU; | |
4412 | return RTYPE_FPU | RTYPE_VEC; | |
4413 | ||
4414 | case OP_REG_ACC: | |
4415 | return RTYPE_ACC; | |
4416 | ||
4417 | case OP_REG_COPRO: | |
4418 | if (opcode->name[strlen (opcode->name) - 1] == '0') | |
4419 | return RTYPE_NUM | RTYPE_CP0; | |
4420 | return RTYPE_NUM; | |
4421 | ||
4422 | case OP_REG_HW: | |
4423 | return RTYPE_NUM; | |
14daeee3 RS |
4424 | |
4425 | case OP_REG_VI: | |
4426 | return RTYPE_NUM | RTYPE_VI; | |
4427 | ||
4428 | case OP_REG_VF: | |
4429 | return RTYPE_NUM | RTYPE_VF; | |
4430 | ||
4431 | case OP_REG_R5900_I: | |
4432 | return RTYPE_R5900_I; | |
4433 | ||
4434 | case OP_REG_R5900_Q: | |
4435 | return RTYPE_R5900_Q; | |
4436 | ||
4437 | case OP_REG_R5900_R: | |
4438 | return RTYPE_R5900_R; | |
4439 | ||
4440 | case OP_REG_R5900_ACC: | |
4441 | return RTYPE_R5900_ACC; | |
56d438b1 CF |
4442 | |
4443 | case OP_REG_MSA: | |
4444 | return RTYPE_MSA; | |
4445 | ||
4446 | case OP_REG_MSA_CTRL: | |
4447 | return RTYPE_NUM; | |
a1d78564 RS |
4448 | } |
4449 | abort (); | |
4450 | } | |
4451 | ||
4452 | /* ARG is register REGNO, of type TYPE. Warn about any dubious registers. */ | |
4453 | ||
4454 | static void | |
4455 | check_regno (struct mips_arg_info *arg, | |
4456 | enum mips_reg_operand_type type, unsigned int regno) | |
4457 | { | |
4458 | if (AT && type == OP_REG_GP && regno == AT) | |
4459 | arg->seen_at = TRUE; | |
4460 | ||
4461 | if (type == OP_REG_FP | |
4462 | && (regno & 1) != 0 | |
4463 | && HAVE_32BIT_FPRS | |
4464 | && !mips_oddfpreg_ok (arg->insn->insn_mo, arg->opnum)) | |
1661c76c | 4465 | as_warn (_("float register should be even, was %d"), regno); |
a1d78564 RS |
4466 | |
4467 | if (type == OP_REG_CCC) | |
4468 | { | |
4469 | const char *name; | |
4470 | size_t length; | |
4471 | ||
4472 | name = arg->insn->insn_mo->name; | |
4473 | length = strlen (name); | |
4474 | if ((regno & 1) != 0 | |
4475 | && ((length >= 3 && strcmp (name + length - 3, ".ps") == 0) | |
4476 | || (length >= 5 && strncmp (name + length - 5, "any2", 4) == 0))) | |
1661c76c | 4477 | as_warn (_("condition code register should be even for %s, was %d"), |
a1d78564 RS |
4478 | name, regno); |
4479 | ||
4480 | if ((regno & 3) != 0 | |
4481 | && (length >= 5 && strncmp (name + length - 5, "any4", 4) == 0)) | |
1661c76c | 4482 | as_warn (_("condition code register should be 0 or 4 for %s, was %d"), |
a1d78564 RS |
4483 | name, regno); |
4484 | } | |
4485 | } | |
4486 | ||
a92713e6 RS |
4487 | /* ARG is a register with symbol value SYMVAL. Try to interpret it as |
4488 | a register of type TYPE. Return true on success, storing the register | |
4489 | number in *REGNO and warning about any dubious uses. */ | |
4490 | ||
4491 | static bfd_boolean | |
4492 | match_regno (struct mips_arg_info *arg, enum mips_reg_operand_type type, | |
4493 | unsigned int symval, unsigned int *regno) | |
4494 | { | |
4495 | if (type == OP_REG_VEC) | |
4496 | symval = mips_prefer_vec_regno (symval); | |
4497 | if (!(symval & convert_reg_type (arg->insn->insn_mo, type))) | |
4498 | return FALSE; | |
4499 | ||
4500 | *regno = symval & RNUM_MASK; | |
4501 | check_regno (arg, type, *regno); | |
4502 | return TRUE; | |
4503 | } | |
4504 | ||
4505 | /* Try to interpret the next token in ARG as a register of type TYPE. | |
4506 | Consume the token and return true on success, storing the register | |
4507 | number in *REGNO. Return false on failure. */ | |
4508 | ||
4509 | static bfd_boolean | |
4510 | match_reg (struct mips_arg_info *arg, enum mips_reg_operand_type type, | |
4511 | unsigned int *regno) | |
4512 | { | |
4513 | if (arg->token->type == OT_REG | |
4514 | && match_regno (arg, type, arg->token->u.regno, regno)) | |
4515 | { | |
4516 | ++arg->token; | |
4517 | return TRUE; | |
4518 | } | |
4519 | return FALSE; | |
4520 | } | |
4521 | ||
4522 | /* Try to interpret the next token in ARG as a range of registers of type TYPE. | |
4523 | Consume the token and return true on success, storing the register numbers | |
4524 | in *REGNO1 and *REGNO2. Return false on failure. */ | |
4525 | ||
4526 | static bfd_boolean | |
4527 | match_reg_range (struct mips_arg_info *arg, enum mips_reg_operand_type type, | |
4528 | unsigned int *regno1, unsigned int *regno2) | |
4529 | { | |
4530 | if (match_reg (arg, type, regno1)) | |
4531 | { | |
4532 | *regno2 = *regno1; | |
4533 | return TRUE; | |
4534 | } | |
4535 | if (arg->token->type == OT_REG_RANGE | |
4536 | && match_regno (arg, type, arg->token->u.reg_range.regno1, regno1) | |
4537 | && match_regno (arg, type, arg->token->u.reg_range.regno2, regno2) | |
4538 | && *regno1 <= *regno2) | |
4539 | { | |
4540 | ++arg->token; | |
4541 | return TRUE; | |
4542 | } | |
4543 | return FALSE; | |
4544 | } | |
4545 | ||
a1d78564 RS |
4546 | /* OP_INT matcher. */ |
4547 | ||
a92713e6 | 4548 | static bfd_boolean |
a1d78564 | 4549 | match_int_operand (struct mips_arg_info *arg, |
a92713e6 | 4550 | const struct mips_operand *operand_base) |
a1d78564 RS |
4551 | { |
4552 | const struct mips_int_operand *operand; | |
3ccad066 | 4553 | unsigned int uval; |
a1d78564 RS |
4554 | int min_val, max_val, factor; |
4555 | offsetT sval; | |
a1d78564 RS |
4556 | |
4557 | operand = (const struct mips_int_operand *) operand_base; | |
4558 | factor = 1 << operand->shift; | |
3ccad066 RS |
4559 | min_val = mips_int_operand_min (operand); |
4560 | max_val = mips_int_operand_max (operand); | |
a1d78564 | 4561 | |
d436c1c2 RS |
4562 | if (operand_base->lsb == 0 |
4563 | && operand_base->size == 16 | |
4564 | && operand->shift == 0 | |
4565 | && operand->bias == 0 | |
4566 | && (operand->max_val == 32767 || operand->max_val == 65535)) | |
a1d78564 RS |
4567 | { |
4568 | /* The operand can be relocated. */ | |
a92713e6 RS |
4569 | if (!match_expression (arg, &offset_expr, offset_reloc)) |
4570 | return FALSE; | |
4571 | ||
4572 | if (offset_reloc[0] != BFD_RELOC_UNUSED) | |
a1d78564 RS |
4573 | /* Relocation operators were used. Accept the arguent and |
4574 | leave the relocation value in offset_expr and offset_relocs | |
4575 | for the caller to process. */ | |
a92713e6 RS |
4576 | return TRUE; |
4577 | ||
4578 | if (offset_expr.X_op != O_constant) | |
a1d78564 | 4579 | { |
60f20e8b RS |
4580 | /* Accept non-constant operands if no later alternative matches, |
4581 | leaving it for the caller to process. */ | |
4582 | if (!arg->lax_match) | |
4583 | return FALSE; | |
a92713e6 RS |
4584 | offset_reloc[0] = BFD_RELOC_LO16; |
4585 | return TRUE; | |
a1d78564 | 4586 | } |
a92713e6 | 4587 | |
a1d78564 RS |
4588 | /* Clear the global state; we're going to install the operand |
4589 | ourselves. */ | |
a92713e6 | 4590 | sval = offset_expr.X_add_number; |
a1d78564 | 4591 | offset_expr.X_op = O_absent; |
60f20e8b RS |
4592 | |
4593 | /* For compatibility with older assemblers, we accept | |
4594 | 0x8000-0xffff as signed 16-bit numbers when only | |
4595 | signed numbers are allowed. */ | |
4596 | if (sval > max_val) | |
4597 | { | |
4598 | max_val = ((1 << operand_base->size) - 1) << operand->shift; | |
4599 | if (!arg->lax_match && sval <= max_val) | |
4600 | return FALSE; | |
4601 | } | |
a1d78564 RS |
4602 | } |
4603 | else | |
4604 | { | |
1a00e612 | 4605 | if (!match_const_int (arg, &sval)) |
a92713e6 | 4606 | return FALSE; |
a1d78564 RS |
4607 | } |
4608 | ||
4609 | arg->last_op_int = sval; | |
4610 | ||
1a00e612 | 4611 | if (sval < min_val || sval > max_val || sval % factor) |
a1d78564 | 4612 | { |
1a00e612 RS |
4613 | match_out_of_range (arg); |
4614 | return FALSE; | |
a1d78564 RS |
4615 | } |
4616 | ||
4617 | uval = (unsigned int) sval >> operand->shift; | |
4618 | uval -= operand->bias; | |
4619 | ||
4620 | /* Handle -mfix-cn63xxp1. */ | |
4621 | if (arg->opnum == 1 | |
4622 | && mips_fix_cn63xxp1 | |
4623 | && !mips_opts.micromips | |
4624 | && strcmp ("pref", arg->insn->insn_mo->name) == 0) | |
4625 | switch (uval) | |
4626 | { | |
4627 | case 5: | |
4628 | case 25: | |
4629 | case 26: | |
4630 | case 27: | |
4631 | case 28: | |
4632 | case 29: | |
4633 | case 30: | |
4634 | case 31: | |
4635 | /* These are ok. */ | |
4636 | break; | |
4637 | ||
4638 | default: | |
4639 | /* The rest must be changed to 28. */ | |
4640 | uval = 28; | |
4641 | break; | |
4642 | } | |
4643 | ||
4644 | insn_insert_operand (arg->insn, operand_base, uval); | |
a92713e6 | 4645 | return TRUE; |
a1d78564 RS |
4646 | } |
4647 | ||
4648 | /* OP_MAPPED_INT matcher. */ | |
4649 | ||
a92713e6 | 4650 | static bfd_boolean |
a1d78564 | 4651 | match_mapped_int_operand (struct mips_arg_info *arg, |
a92713e6 | 4652 | const struct mips_operand *operand_base) |
a1d78564 RS |
4653 | { |
4654 | const struct mips_mapped_int_operand *operand; | |
4655 | unsigned int uval, num_vals; | |
4656 | offsetT sval; | |
4657 | ||
4658 | operand = (const struct mips_mapped_int_operand *) operand_base; | |
1a00e612 | 4659 | if (!match_const_int (arg, &sval)) |
a92713e6 | 4660 | return FALSE; |
a1d78564 RS |
4661 | |
4662 | num_vals = 1 << operand_base->size; | |
4663 | for (uval = 0; uval < num_vals; uval++) | |
4664 | if (operand->int_map[uval] == sval) | |
4665 | break; | |
4666 | if (uval == num_vals) | |
1a00e612 RS |
4667 | { |
4668 | match_out_of_range (arg); | |
4669 | return FALSE; | |
4670 | } | |
a1d78564 RS |
4671 | |
4672 | insn_insert_operand (arg->insn, operand_base, uval); | |
a92713e6 | 4673 | return TRUE; |
a1d78564 RS |
4674 | } |
4675 | ||
4676 | /* OP_MSB matcher. */ | |
4677 | ||
a92713e6 | 4678 | static bfd_boolean |
a1d78564 | 4679 | match_msb_operand (struct mips_arg_info *arg, |
a92713e6 | 4680 | const struct mips_operand *operand_base) |
a1d78564 RS |
4681 | { |
4682 | const struct mips_msb_operand *operand; | |
4683 | int min_val, max_val, max_high; | |
4684 | offsetT size, sval, high; | |
4685 | ||
4686 | operand = (const struct mips_msb_operand *) operand_base; | |
4687 | min_val = operand->bias; | |
4688 | max_val = min_val + (1 << operand_base->size) - 1; | |
4689 | max_high = operand->opsize; | |
4690 | ||
1a00e612 | 4691 | if (!match_const_int (arg, &size)) |
a92713e6 | 4692 | return FALSE; |
a1d78564 RS |
4693 | |
4694 | high = size + arg->last_op_int; | |
4695 | sval = operand->add_lsb ? high : size; | |
4696 | ||
4697 | if (size < 0 || high > max_high || sval < min_val || sval > max_val) | |
4698 | { | |
1a00e612 RS |
4699 | match_out_of_range (arg); |
4700 | return FALSE; | |
a1d78564 RS |
4701 | } |
4702 | insn_insert_operand (arg->insn, operand_base, sval - min_val); | |
a92713e6 | 4703 | return TRUE; |
a1d78564 RS |
4704 | } |
4705 | ||
4706 | /* OP_REG matcher. */ | |
4707 | ||
a92713e6 | 4708 | static bfd_boolean |
a1d78564 | 4709 | match_reg_operand (struct mips_arg_info *arg, |
a92713e6 | 4710 | const struct mips_operand *operand_base) |
a1d78564 RS |
4711 | { |
4712 | const struct mips_reg_operand *operand; | |
a92713e6 | 4713 | unsigned int regno, uval, num_vals; |
a1d78564 RS |
4714 | |
4715 | operand = (const struct mips_reg_operand *) operand_base; | |
a92713e6 RS |
4716 | if (!match_reg (arg, operand->reg_type, ®no)) |
4717 | return FALSE; | |
a1d78564 RS |
4718 | |
4719 | if (operand->reg_map) | |
4720 | { | |
4721 | num_vals = 1 << operand->root.size; | |
4722 | for (uval = 0; uval < num_vals; uval++) | |
4723 | if (operand->reg_map[uval] == regno) | |
4724 | break; | |
4725 | if (num_vals == uval) | |
a92713e6 | 4726 | return FALSE; |
a1d78564 RS |
4727 | } |
4728 | else | |
4729 | uval = regno; | |
4730 | ||
a1d78564 RS |
4731 | arg->last_regno = regno; |
4732 | if (arg->opnum == 1) | |
4733 | arg->dest_regno = regno; | |
4734 | insn_insert_operand (arg->insn, operand_base, uval); | |
a92713e6 | 4735 | return TRUE; |
a1d78564 RS |
4736 | } |
4737 | ||
4738 | /* OP_REG_PAIR matcher. */ | |
4739 | ||
a92713e6 | 4740 | static bfd_boolean |
a1d78564 | 4741 | match_reg_pair_operand (struct mips_arg_info *arg, |
a92713e6 | 4742 | const struct mips_operand *operand_base) |
a1d78564 RS |
4743 | { |
4744 | const struct mips_reg_pair_operand *operand; | |
a92713e6 | 4745 | unsigned int regno1, regno2, uval, num_vals; |
a1d78564 RS |
4746 | |
4747 | operand = (const struct mips_reg_pair_operand *) operand_base; | |
a92713e6 RS |
4748 | if (!match_reg (arg, operand->reg_type, ®no1) |
4749 | || !match_char (arg, ',') | |
4750 | || !match_reg (arg, operand->reg_type, ®no2)) | |
4751 | return FALSE; | |
a1d78564 RS |
4752 | |
4753 | num_vals = 1 << operand_base->size; | |
4754 | for (uval = 0; uval < num_vals; uval++) | |
4755 | if (operand->reg1_map[uval] == regno1 && operand->reg2_map[uval] == regno2) | |
4756 | break; | |
4757 | if (uval == num_vals) | |
a92713e6 | 4758 | return FALSE; |
a1d78564 | 4759 | |
a1d78564 | 4760 | insn_insert_operand (arg->insn, operand_base, uval); |
a92713e6 | 4761 | return TRUE; |
a1d78564 RS |
4762 | } |
4763 | ||
4764 | /* OP_PCREL matcher. The caller chooses the relocation type. */ | |
4765 | ||
a92713e6 RS |
4766 | static bfd_boolean |
4767 | match_pcrel_operand (struct mips_arg_info *arg) | |
a1d78564 | 4768 | { |
a92713e6 RS |
4769 | bfd_reloc_code_real_type r[3]; |
4770 | ||
4771 | return match_expression (arg, &offset_expr, r) && r[0] == BFD_RELOC_UNUSED; | |
a1d78564 RS |
4772 | } |
4773 | ||
4774 | /* OP_PERF_REG matcher. */ | |
4775 | ||
a92713e6 | 4776 | static bfd_boolean |
a1d78564 | 4777 | match_perf_reg_operand (struct mips_arg_info *arg, |
a92713e6 | 4778 | const struct mips_operand *operand) |
a1d78564 RS |
4779 | { |
4780 | offsetT sval; | |
4781 | ||
1a00e612 | 4782 | if (!match_const_int (arg, &sval)) |
a92713e6 | 4783 | return FALSE; |
a1d78564 RS |
4784 | |
4785 | if (sval != 0 | |
4786 | && (sval != 1 | |
4787 | || (mips_opts.arch == CPU_R5900 | |
4788 | && (strcmp (arg->insn->insn_mo->name, "mfps") == 0 | |
4789 | || strcmp (arg->insn->insn_mo->name, "mtps") == 0)))) | |
4790 | { | |
1a00e612 RS |
4791 | set_insn_error (arg->argnum, _("invalid performance register")); |
4792 | return FALSE; | |
a1d78564 RS |
4793 | } |
4794 | ||
4795 | insn_insert_operand (arg->insn, operand, sval); | |
a92713e6 | 4796 | return TRUE; |
a1d78564 RS |
4797 | } |
4798 | ||
4799 | /* OP_ADDIUSP matcher. */ | |
4800 | ||
a92713e6 | 4801 | static bfd_boolean |
a1d78564 | 4802 | match_addiusp_operand (struct mips_arg_info *arg, |
a92713e6 | 4803 | const struct mips_operand *operand) |
a1d78564 RS |
4804 | { |
4805 | offsetT sval; | |
4806 | unsigned int uval; | |
4807 | ||
1a00e612 | 4808 | if (!match_const_int (arg, &sval)) |
a92713e6 | 4809 | return FALSE; |
a1d78564 RS |
4810 | |
4811 | if (sval % 4) | |
1a00e612 RS |
4812 | { |
4813 | match_out_of_range (arg); | |
4814 | return FALSE; | |
4815 | } | |
a1d78564 RS |
4816 | |
4817 | sval /= 4; | |
4818 | if (!(sval >= -258 && sval <= 257) || (sval >= -2 && sval <= 1)) | |
1a00e612 RS |
4819 | { |
4820 | match_out_of_range (arg); | |
4821 | return FALSE; | |
4822 | } | |
a1d78564 RS |
4823 | |
4824 | uval = (unsigned int) sval; | |
4825 | uval = ((uval >> 1) & ~0xff) | (uval & 0xff); | |
4826 | insn_insert_operand (arg->insn, operand, uval); | |
a92713e6 | 4827 | return TRUE; |
a1d78564 RS |
4828 | } |
4829 | ||
4830 | /* OP_CLO_CLZ_DEST matcher. */ | |
4831 | ||
a92713e6 | 4832 | static bfd_boolean |
a1d78564 | 4833 | match_clo_clz_dest_operand (struct mips_arg_info *arg, |
a92713e6 | 4834 | const struct mips_operand *operand) |
a1d78564 RS |
4835 | { |
4836 | unsigned int regno; | |
4837 | ||
a92713e6 RS |
4838 | if (!match_reg (arg, OP_REG_GP, ®no)) |
4839 | return FALSE; | |
a1d78564 | 4840 | |
a1d78564 | 4841 | insn_insert_operand (arg->insn, operand, regno | (regno << 5)); |
a92713e6 | 4842 | return TRUE; |
a1d78564 RS |
4843 | } |
4844 | ||
4845 | /* OP_LWM_SWM_LIST matcher. */ | |
4846 | ||
a92713e6 | 4847 | static bfd_boolean |
a1d78564 | 4848 | match_lwm_swm_list_operand (struct mips_arg_info *arg, |
a92713e6 | 4849 | const struct mips_operand *operand) |
a1d78564 | 4850 | { |
a92713e6 RS |
4851 | unsigned int reglist, sregs, ra, regno1, regno2; |
4852 | struct mips_arg_info reset; | |
a1d78564 | 4853 | |
a92713e6 RS |
4854 | reglist = 0; |
4855 | if (!match_reg_range (arg, OP_REG_GP, ®no1, ®no2)) | |
4856 | return FALSE; | |
4857 | do | |
4858 | { | |
4859 | if (regno2 == FP && regno1 >= S0 && regno1 <= S7) | |
4860 | { | |
4861 | reglist |= 1 << FP; | |
4862 | regno2 = S7; | |
4863 | } | |
4864 | reglist |= ((1U << regno2 << 1) - 1) & -(1U << regno1); | |
4865 | reset = *arg; | |
4866 | } | |
4867 | while (match_char (arg, ',') | |
4868 | && match_reg_range (arg, OP_REG_GP, ®no1, ®no2)); | |
4869 | *arg = reset; | |
a1d78564 RS |
4870 | |
4871 | if (operand->size == 2) | |
4872 | { | |
4873 | /* The list must include both ra and s0-sN, for 0 <= N <= 3. E.g.: | |
4874 | ||
4875 | s0, ra | |
4876 | s0, s1, ra, s2, s3 | |
4877 | s0-s2, ra | |
4878 | ||
4879 | and any permutations of these. */ | |
4880 | if ((reglist & 0xfff1ffff) != 0x80010000) | |
a92713e6 | 4881 | return FALSE; |
a1d78564 RS |
4882 | |
4883 | sregs = (reglist >> 17) & 7; | |
4884 | ra = 0; | |
4885 | } | |
4886 | else | |
4887 | { | |
4888 | /* The list must include at least one of ra and s0-sN, | |
4889 | for 0 <= N <= 8. (Note that there is a gap between s7 and s8, | |
4890 | which are $23 and $30 respectively.) E.g.: | |
4891 | ||
4892 | ra | |
4893 | s0 | |
4894 | ra, s0, s1, s2 | |
4895 | s0-s8 | |
4896 | s0-s5, ra | |
4897 | ||
4898 | and any permutations of these. */ | |
4899 | if ((reglist & 0x3f00ffff) != 0) | |
a92713e6 | 4900 | return FALSE; |
a1d78564 RS |
4901 | |
4902 | ra = (reglist >> 27) & 0x10; | |
4903 | sregs = ((reglist >> 22) & 0x100) | ((reglist >> 16) & 0xff); | |
4904 | } | |
4905 | sregs += 1; | |
4906 | if ((sregs & -sregs) != sregs) | |
a92713e6 | 4907 | return FALSE; |
a1d78564 RS |
4908 | |
4909 | insn_insert_operand (arg->insn, operand, (ffs (sregs) - 1) | ra); | |
a92713e6 | 4910 | return TRUE; |
a1d78564 RS |
4911 | } |
4912 | ||
364215c8 RS |
4913 | /* OP_ENTRY_EXIT_LIST matcher. */ |
4914 | ||
a92713e6 | 4915 | static unsigned int |
364215c8 | 4916 | match_entry_exit_operand (struct mips_arg_info *arg, |
a92713e6 | 4917 | const struct mips_operand *operand) |
364215c8 RS |
4918 | { |
4919 | unsigned int mask; | |
4920 | bfd_boolean is_exit; | |
4921 | ||
4922 | /* The format is the same for both ENTRY and EXIT, but the constraints | |
4923 | are different. */ | |
4924 | is_exit = strcmp (arg->insn->insn_mo->name, "exit") == 0; | |
4925 | mask = (is_exit ? 7 << 3 : 0); | |
a92713e6 | 4926 | do |
364215c8 RS |
4927 | { |
4928 | unsigned int regno1, regno2; | |
4929 | bfd_boolean is_freg; | |
4930 | ||
a92713e6 | 4931 | if (match_reg_range (arg, OP_REG_GP, ®no1, ®no2)) |
364215c8 | 4932 | is_freg = FALSE; |
a92713e6 | 4933 | else if (match_reg_range (arg, OP_REG_FP, ®no1, ®no2)) |
364215c8 RS |
4934 | is_freg = TRUE; |
4935 | else | |
a92713e6 | 4936 | return FALSE; |
364215c8 RS |
4937 | |
4938 | if (is_exit && is_freg && regno1 == 0 && regno2 < 2) | |
4939 | { | |
4940 | mask &= ~(7 << 3); | |
4941 | mask |= (5 + regno2) << 3; | |
4942 | } | |
4943 | else if (!is_exit && regno1 == 4 && regno2 >= 4 && regno2 <= 7) | |
4944 | mask |= (regno2 - 3) << 3; | |
4945 | else if (regno1 == 16 && regno2 >= 16 && regno2 <= 17) | |
4946 | mask |= (regno2 - 15) << 1; | |
4947 | else if (regno1 == RA && regno2 == RA) | |
4948 | mask |= 1; | |
4949 | else | |
a92713e6 | 4950 | return FALSE; |
364215c8 | 4951 | } |
a92713e6 RS |
4952 | while (match_char (arg, ',')); |
4953 | ||
364215c8 | 4954 | insn_insert_operand (arg->insn, operand, mask); |
a92713e6 | 4955 | return TRUE; |
364215c8 RS |
4956 | } |
4957 | ||
4958 | /* OP_SAVE_RESTORE_LIST matcher. */ | |
4959 | ||
a92713e6 RS |
4960 | static bfd_boolean |
4961 | match_save_restore_list_operand (struct mips_arg_info *arg) | |
364215c8 RS |
4962 | { |
4963 | unsigned int opcode, args, statics, sregs; | |
4964 | unsigned int num_frame_sizes, num_args, num_statics, num_sregs; | |
364215c8 | 4965 | offsetT frame_size; |
364215c8 | 4966 | |
364215c8 RS |
4967 | opcode = arg->insn->insn_opcode; |
4968 | frame_size = 0; | |
4969 | num_frame_sizes = 0; | |
4970 | args = 0; | |
4971 | statics = 0; | |
4972 | sregs = 0; | |
a92713e6 | 4973 | do |
364215c8 RS |
4974 | { |
4975 | unsigned int regno1, regno2; | |
4976 | ||
a92713e6 | 4977 | if (arg->token->type == OT_INTEGER) |
364215c8 RS |
4978 | { |
4979 | /* Handle the frame size. */ | |
1a00e612 | 4980 | if (!match_const_int (arg, &frame_size)) |
a92713e6 | 4981 | return FALSE; |
364215c8 | 4982 | num_frame_sizes += 1; |
364215c8 RS |
4983 | } |
4984 | else | |
4985 | { | |
a92713e6 RS |
4986 | if (!match_reg_range (arg, OP_REG_GP, ®no1, ®no2)) |
4987 | return FALSE; | |
364215c8 RS |
4988 | |
4989 | while (regno1 <= regno2) | |
4990 | { | |
4991 | if (regno1 >= 4 && regno1 <= 7) | |
4992 | { | |
4993 | if (num_frame_sizes == 0) | |
4994 | /* args $a0-$a3 */ | |
4995 | args |= 1 << (regno1 - 4); | |
4996 | else | |
4997 | /* statics $a0-$a3 */ | |
4998 | statics |= 1 << (regno1 - 4); | |
4999 | } | |
5000 | else if (regno1 >= 16 && regno1 <= 23) | |
5001 | /* $s0-$s7 */ | |
5002 | sregs |= 1 << (regno1 - 16); | |
5003 | else if (regno1 == 30) | |
5004 | /* $s8 */ | |
5005 | sregs |= 1 << 8; | |
5006 | else if (regno1 == 31) | |
5007 | /* Add $ra to insn. */ | |
5008 | opcode |= 0x40; | |
5009 | else | |
a92713e6 | 5010 | return FALSE; |
364215c8 RS |
5011 | regno1 += 1; |
5012 | if (regno1 == 24) | |
5013 | regno1 = 30; | |
5014 | } | |
5015 | } | |
364215c8 | 5016 | } |
a92713e6 | 5017 | while (match_char (arg, ',')); |
364215c8 RS |
5018 | |
5019 | /* Encode args/statics combination. */ | |
5020 | if (args & statics) | |
a92713e6 | 5021 | return FALSE; |
364215c8 RS |
5022 | else if (args == 0xf) |
5023 | /* All $a0-$a3 are args. */ | |
5024 | opcode |= MIPS16_ALL_ARGS << 16; | |
5025 | else if (statics == 0xf) | |
5026 | /* All $a0-$a3 are statics. */ | |
5027 | opcode |= MIPS16_ALL_STATICS << 16; | |
5028 | else | |
5029 | { | |
5030 | /* Count arg registers. */ | |
5031 | num_args = 0; | |
5032 | while (args & 0x1) | |
5033 | { | |
5034 | args >>= 1; | |
5035 | num_args += 1; | |
5036 | } | |
5037 | if (args != 0) | |
a92713e6 | 5038 | return FALSE; |
364215c8 RS |
5039 | |
5040 | /* Count static registers. */ | |
5041 | num_statics = 0; | |
5042 | while (statics & 0x8) | |
5043 | { | |
5044 | statics = (statics << 1) & 0xf; | |
5045 | num_statics += 1; | |
5046 | } | |
5047 | if (statics != 0) | |
a92713e6 | 5048 | return FALSE; |
364215c8 RS |
5049 | |
5050 | /* Encode args/statics. */ | |
5051 | opcode |= ((num_args << 2) | num_statics) << 16; | |
5052 | } | |
5053 | ||
5054 | /* Encode $s0/$s1. */ | |
5055 | if (sregs & (1 << 0)) /* $s0 */ | |
5056 | opcode |= 0x20; | |
5057 | if (sregs & (1 << 1)) /* $s1 */ | |
5058 | opcode |= 0x10; | |
5059 | sregs >>= 2; | |
5060 | ||
5061 | /* Encode $s2-$s8. */ | |
5062 | num_sregs = 0; | |
5063 | while (sregs & 1) | |
5064 | { | |
5065 | sregs >>= 1; | |
5066 | num_sregs += 1; | |
5067 | } | |
5068 | if (sregs != 0) | |
a92713e6 | 5069 | return FALSE; |
364215c8 RS |
5070 | opcode |= num_sregs << 24; |
5071 | ||
5072 | /* Encode frame size. */ | |
5073 | if (num_frame_sizes == 0) | |
1a00e612 RS |
5074 | { |
5075 | set_insn_error (arg->argnum, _("missing frame size")); | |
5076 | return FALSE; | |
5077 | } | |
5078 | if (num_frame_sizes > 1) | |
5079 | { | |
5080 | set_insn_error (arg->argnum, _("frame size specified twice")); | |
5081 | return FALSE; | |
5082 | } | |
5083 | if ((frame_size & 7) != 0 || frame_size < 0 || frame_size > 0xff * 8) | |
5084 | { | |
5085 | set_insn_error (arg->argnum, _("invalid frame size")); | |
5086 | return FALSE; | |
5087 | } | |
5088 | if (frame_size != 128 || (opcode >> 16) != 0) | |
364215c8 RS |
5089 | { |
5090 | frame_size /= 8; | |
5091 | opcode |= (((frame_size & 0xf0) << 16) | |
5092 | | (frame_size & 0x0f)); | |
5093 | } | |
5094 | ||
364215c8 RS |
5095 | /* Finally build the instruction. */ |
5096 | if ((opcode >> 16) != 0 || frame_size == 0) | |
5097 | opcode |= MIPS16_EXTEND; | |
5098 | arg->insn->insn_opcode = opcode; | |
a92713e6 | 5099 | return TRUE; |
364215c8 RS |
5100 | } |
5101 | ||
a1d78564 RS |
5102 | /* OP_MDMX_IMM_REG matcher. */ |
5103 | ||
a92713e6 | 5104 | static bfd_boolean |
a1d78564 | 5105 | match_mdmx_imm_reg_operand (struct mips_arg_info *arg, |
a92713e6 | 5106 | const struct mips_operand *operand) |
a1d78564 | 5107 | { |
a92713e6 | 5108 | unsigned int regno, uval; |
a1d78564 RS |
5109 | bfd_boolean is_qh; |
5110 | const struct mips_opcode *opcode; | |
5111 | ||
5112 | /* The mips_opcode records whether this is an octobyte or quadhalf | |
5113 | instruction. Start out with that bit in place. */ | |
5114 | opcode = arg->insn->insn_mo; | |
5115 | uval = mips_extract_operand (operand, opcode->match); | |
5116 | is_qh = (uval != 0); | |
5117 | ||
56d438b1 | 5118 | if (arg->token->type == OT_REG) |
a1d78564 RS |
5119 | { |
5120 | if ((opcode->membership & INSN_5400) | |
5121 | && strcmp (opcode->name, "rzu.ob") == 0) | |
5122 | { | |
1a00e612 RS |
5123 | set_insn_error_i (arg->argnum, _("operand %d must be an immediate"), |
5124 | arg->argnum); | |
5125 | return FALSE; | |
a1d78564 RS |
5126 | } |
5127 | ||
56d438b1 CF |
5128 | if (!match_regno (arg, OP_REG_VEC, arg->token->u.regno, ®no)) |
5129 | return FALSE; | |
5130 | ++arg->token; | |
5131 | ||
a1d78564 RS |
5132 | /* Check whether this is a vector register or a broadcast of |
5133 | a single element. */ | |
56d438b1 | 5134 | if (arg->token->type == OT_INTEGER_INDEX) |
a1d78564 | 5135 | { |
56d438b1 | 5136 | if (arg->token->u.index > (is_qh ? 3 : 7)) |
a1d78564 | 5137 | { |
1a00e612 RS |
5138 | set_insn_error (arg->argnum, _("invalid element selector")); |
5139 | return FALSE; | |
a1d78564 | 5140 | } |
56d438b1 CF |
5141 | uval |= arg->token->u.index << (is_qh ? 2 : 1) << 5; |
5142 | ++arg->token; | |
a1d78564 RS |
5143 | } |
5144 | else | |
5145 | { | |
5146 | /* A full vector. */ | |
5147 | if ((opcode->membership & INSN_5400) | |
5148 | && (strcmp (opcode->name, "sll.ob") == 0 | |
5149 | || strcmp (opcode->name, "srl.ob") == 0)) | |
5150 | { | |
1a00e612 RS |
5151 | set_insn_error_i (arg->argnum, _("operand %d must be scalar"), |
5152 | arg->argnum); | |
5153 | return FALSE; | |
a1d78564 RS |
5154 | } |
5155 | ||
5156 | if (is_qh) | |
5157 | uval |= MDMX_FMTSEL_VEC_QH << 5; | |
5158 | else | |
5159 | uval |= MDMX_FMTSEL_VEC_OB << 5; | |
5160 | } | |
a1d78564 RS |
5161 | uval |= regno; |
5162 | } | |
5163 | else | |
5164 | { | |
5165 | offsetT sval; | |
5166 | ||
1a00e612 | 5167 | if (!match_const_int (arg, &sval)) |
a92713e6 | 5168 | return FALSE; |
a1d78564 RS |
5169 | if (sval < 0 || sval > 31) |
5170 | { | |
1a00e612 RS |
5171 | match_out_of_range (arg); |
5172 | return FALSE; | |
a1d78564 RS |
5173 | } |
5174 | uval |= (sval & 31); | |
5175 | if (is_qh) | |
5176 | uval |= MDMX_FMTSEL_IMM_QH << 5; | |
5177 | else | |
5178 | uval |= MDMX_FMTSEL_IMM_OB << 5; | |
5179 | } | |
5180 | insn_insert_operand (arg->insn, operand, uval); | |
a92713e6 | 5181 | return TRUE; |
a1d78564 RS |
5182 | } |
5183 | ||
56d438b1 CF |
5184 | /* OP_IMM_INDEX matcher. */ |
5185 | ||
5186 | static bfd_boolean | |
5187 | match_imm_index_operand (struct mips_arg_info *arg, | |
5188 | const struct mips_operand *operand) | |
5189 | { | |
5190 | unsigned int max_val; | |
5191 | ||
5192 | if (arg->token->type != OT_INTEGER_INDEX) | |
5193 | return FALSE; | |
5194 | ||
5195 | max_val = (1 << operand->size) - 1; | |
5196 | if (arg->token->u.index > max_val) | |
5197 | { | |
5198 | match_out_of_range (arg); | |
5199 | return FALSE; | |
5200 | } | |
5201 | insn_insert_operand (arg->insn, operand, arg->token->u.index); | |
5202 | ++arg->token; | |
5203 | return TRUE; | |
5204 | } | |
5205 | ||
5206 | /* OP_REG_INDEX matcher. */ | |
5207 | ||
5208 | static bfd_boolean | |
5209 | match_reg_index_operand (struct mips_arg_info *arg, | |
5210 | const struct mips_operand *operand) | |
5211 | { | |
5212 | unsigned int regno; | |
5213 | ||
5214 | if (arg->token->type != OT_REG_INDEX) | |
5215 | return FALSE; | |
5216 | ||
5217 | if (!match_regno (arg, OP_REG_GP, arg->token->u.regno, ®no)) | |
5218 | return FALSE; | |
5219 | ||
5220 | insn_insert_operand (arg->insn, operand, regno); | |
5221 | ++arg->token; | |
5222 | return TRUE; | |
5223 | } | |
5224 | ||
a1d78564 RS |
5225 | /* OP_PC matcher. */ |
5226 | ||
a92713e6 RS |
5227 | static bfd_boolean |
5228 | match_pc_operand (struct mips_arg_info *arg) | |
a1d78564 | 5229 | { |
a92713e6 RS |
5230 | if (arg->token->type == OT_REG && (arg->token->u.regno & RTYPE_PC)) |
5231 | { | |
5232 | ++arg->token; | |
5233 | return TRUE; | |
5234 | } | |
5235 | return FALSE; | |
a1d78564 RS |
5236 | } |
5237 | ||
5238 | /* OP_REPEAT_DEST_REG and OP_REPEAT_PREV_REG matcher. OTHER_REGNO is the | |
5239 | register that we need to match. */ | |
5240 | ||
a92713e6 RS |
5241 | static bfd_boolean |
5242 | match_tied_reg_operand (struct mips_arg_info *arg, unsigned int other_regno) | |
a1d78564 RS |
5243 | { |
5244 | unsigned int regno; | |
5245 | ||
a92713e6 | 5246 | return match_reg (arg, OP_REG_GP, ®no) && regno == other_regno; |
a1d78564 RS |
5247 | } |
5248 | ||
89565f1b RS |
5249 | /* Read a floating-point constant from S for LI.S or LI.D. LENGTH is |
5250 | the length of the value in bytes (4 for float, 8 for double) and | |
5251 | USING_GPRS says whether the destination is a GPR rather than an FPR. | |
5252 | ||
5253 | Return the constant in IMM and OFFSET as follows: | |
5254 | ||
5255 | - If the constant should be loaded via memory, set IMM to O_absent and | |
5256 | OFFSET to the memory address. | |
5257 | ||
5258 | - Otherwise, if the constant should be loaded into two 32-bit registers, | |
5259 | set IMM to the O_constant to load into the high register and OFFSET | |
5260 | to the corresponding value for the low register. | |
5261 | ||
5262 | - Otherwise, set IMM to the full O_constant and set OFFSET to O_absent. | |
5263 | ||
5264 | These constants only appear as the last operand in an instruction, | |
5265 | and every instruction that accepts them in any variant accepts them | |
5266 | in all variants. This means we don't have to worry about backing out | |
5267 | any changes if the instruction does not match. We just match | |
5268 | unconditionally and report an error if the constant is invalid. */ | |
5269 | ||
a92713e6 RS |
5270 | static bfd_boolean |
5271 | match_float_constant (struct mips_arg_info *arg, expressionS *imm, | |
5272 | expressionS *offset, int length, bfd_boolean using_gprs) | |
89565f1b | 5273 | { |
a92713e6 | 5274 | char *p; |
89565f1b RS |
5275 | segT seg, new_seg; |
5276 | subsegT subseg; | |
5277 | const char *newname; | |
a92713e6 | 5278 | unsigned char *data; |
89565f1b RS |
5279 | |
5280 | /* Where the constant is placed is based on how the MIPS assembler | |
5281 | does things: | |
5282 | ||
5283 | length == 4 && using_gprs -- immediate value only | |
5284 | length == 8 && using_gprs -- .rdata or immediate value | |
5285 | length == 4 && !using_gprs -- .lit4 or immediate value | |
5286 | length == 8 && !using_gprs -- .lit8 or immediate value | |
5287 | ||
5288 | The .lit4 and .lit8 sections are only used if permitted by the | |
5289 | -G argument. */ | |
a92713e6 | 5290 | if (arg->token->type != OT_FLOAT) |
1a00e612 RS |
5291 | { |
5292 | set_insn_error (arg->argnum, _("floating-point expression required")); | |
5293 | return FALSE; | |
5294 | } | |
a92713e6 RS |
5295 | |
5296 | gas_assert (arg->token->u.flt.length == length); | |
5297 | data = arg->token->u.flt.data; | |
5298 | ++arg->token; | |
89565f1b RS |
5299 | |
5300 | /* Handle 32-bit constants for which an immediate value is best. */ | |
5301 | if (length == 4 | |
5302 | && (using_gprs | |
5303 | || g_switch_value < 4 | |
5304 | || (data[0] == 0 && data[1] == 0) | |
5305 | || (data[2] == 0 && data[3] == 0))) | |
5306 | { | |
5307 | imm->X_op = O_constant; | |
5308 | if (!target_big_endian) | |
5309 | imm->X_add_number = bfd_getl32 (data); | |
5310 | else | |
5311 | imm->X_add_number = bfd_getb32 (data); | |
5312 | offset->X_op = O_absent; | |
a92713e6 | 5313 | return TRUE; |
89565f1b RS |
5314 | } |
5315 | ||
5316 | /* Handle 64-bit constants for which an immediate value is best. */ | |
5317 | if (length == 8 | |
5318 | && !mips_disable_float_construction | |
5319 | /* Constants can only be constructed in GPRs and copied | |
5320 | to FPRs if the GPRs are at least as wide as the FPRs. | |
5321 | Force the constant into memory if we are using 64-bit FPRs | |
5322 | but the GPRs are only 32 bits wide. */ | |
5323 | /* ??? No longer true with the addition of MTHC1, but this | |
5324 | is legacy code... */ | |
5325 | && (using_gprs || !(HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) | |
5326 | && ((data[0] == 0 && data[1] == 0) | |
5327 | || (data[2] == 0 && data[3] == 0)) | |
5328 | && ((data[4] == 0 && data[5] == 0) | |
5329 | || (data[6] == 0 && data[7] == 0))) | |
5330 | { | |
5331 | /* The value is simple enough to load with a couple of instructions. | |
5332 | If using 32-bit registers, set IMM to the high order 32 bits and | |
5333 | OFFSET to the low order 32 bits. Otherwise, set IMM to the entire | |
5334 | 64 bit constant. */ | |
5335 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) | |
5336 | { | |
5337 | imm->X_op = O_constant; | |
5338 | offset->X_op = O_constant; | |
5339 | if (!target_big_endian) | |
5340 | { | |
5341 | imm->X_add_number = bfd_getl32 (data + 4); | |
5342 | offset->X_add_number = bfd_getl32 (data); | |
5343 | } | |
5344 | else | |
5345 | { | |
5346 | imm->X_add_number = bfd_getb32 (data); | |
5347 | offset->X_add_number = bfd_getb32 (data + 4); | |
5348 | } | |
5349 | if (offset->X_add_number == 0) | |
5350 | offset->X_op = O_absent; | |
5351 | } | |
5352 | else | |
5353 | { | |
5354 | imm->X_op = O_constant; | |
5355 | if (!target_big_endian) | |
5356 | imm->X_add_number = bfd_getl64 (data); | |
5357 | else | |
5358 | imm->X_add_number = bfd_getb64 (data); | |
5359 | offset->X_op = O_absent; | |
5360 | } | |
a92713e6 | 5361 | return TRUE; |
89565f1b RS |
5362 | } |
5363 | ||
5364 | /* Switch to the right section. */ | |
5365 | seg = now_seg; | |
5366 | subseg = now_subseg; | |
5367 | if (length == 4) | |
5368 | { | |
5369 | gas_assert (!using_gprs && g_switch_value >= 4); | |
5370 | newname = ".lit4"; | |
5371 | } | |
5372 | else | |
5373 | { | |
5374 | if (using_gprs || g_switch_value < 8) | |
5375 | newname = RDATA_SECTION_NAME; | |
5376 | else | |
5377 | newname = ".lit8"; | |
5378 | } | |
5379 | ||
5380 | new_seg = subseg_new (newname, (subsegT) 0); | |
5381 | bfd_set_section_flags (stdoutput, new_seg, | |
5382 | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA); | |
5383 | frag_align (length == 4 ? 2 : 3, 0, 0); | |
5384 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
5385 | record_alignment (new_seg, 4); | |
5386 | else | |
5387 | record_alignment (new_seg, length == 4 ? 2 : 3); | |
5388 | if (seg == now_seg) | |
1661c76c | 5389 | as_bad (_("cannot use `%s' in this section"), arg->insn->insn_mo->name); |
89565f1b RS |
5390 | |
5391 | /* Set the argument to the current address in the section. */ | |
5392 | imm->X_op = O_absent; | |
5393 | offset->X_op = O_symbol; | |
5394 | offset->X_add_symbol = symbol_temp_new_now (); | |
5395 | offset->X_add_number = 0; | |
5396 | ||
5397 | /* Put the floating point number into the section. */ | |
5398 | p = frag_more (length); | |
5399 | memcpy (p, data, length); | |
5400 | ||
5401 | /* Switch back to the original section. */ | |
5402 | subseg_set (seg, subseg); | |
a92713e6 | 5403 | return TRUE; |
89565f1b RS |
5404 | } |
5405 | ||
14daeee3 RS |
5406 | /* OP_VU0_SUFFIX and OP_VU0_MATCH_SUFFIX matcher; MATCH_P selects between |
5407 | them. */ | |
5408 | ||
5409 | static bfd_boolean | |
5410 | match_vu0_suffix_operand (struct mips_arg_info *arg, | |
5411 | const struct mips_operand *operand, | |
5412 | bfd_boolean match_p) | |
5413 | { | |
5414 | unsigned int uval; | |
5415 | ||
5416 | /* The operand can be an XYZW mask or a single 2-bit channel index | |
5417 | (with X being 0). */ | |
5418 | gas_assert (operand->size == 2 || operand->size == 4); | |
5419 | ||
ee5734f0 | 5420 | /* The suffix can be omitted when it is already part of the opcode. */ |
14daeee3 | 5421 | if (arg->token->type != OT_CHANNELS) |
ee5734f0 | 5422 | return match_p; |
14daeee3 RS |
5423 | |
5424 | uval = arg->token->u.channels; | |
5425 | if (operand->size == 2) | |
5426 | { | |
5427 | /* Check that a single bit is set and convert it into a 2-bit index. */ | |
5428 | if ((uval & -uval) != uval) | |
5429 | return FALSE; | |
5430 | uval = 4 - ffs (uval); | |
5431 | } | |
5432 | ||
5433 | if (match_p && insn_extract_operand (arg->insn, operand) != uval) | |
5434 | return FALSE; | |
5435 | ||
5436 | ++arg->token; | |
5437 | if (!match_p) | |
5438 | insn_insert_operand (arg->insn, operand, uval); | |
5439 | return TRUE; | |
5440 | } | |
5441 | ||
a1d78564 RS |
5442 | /* S is the text seen for ARG. Match it against OPERAND. Return the end |
5443 | of the argument text if the match is successful, otherwise return null. */ | |
5444 | ||
a92713e6 | 5445 | static bfd_boolean |
a1d78564 | 5446 | match_operand (struct mips_arg_info *arg, |
a92713e6 | 5447 | const struct mips_operand *operand) |
a1d78564 RS |
5448 | { |
5449 | switch (operand->type) | |
5450 | { | |
5451 | case OP_INT: | |
a92713e6 | 5452 | return match_int_operand (arg, operand); |
a1d78564 RS |
5453 | |
5454 | case OP_MAPPED_INT: | |
a92713e6 | 5455 | return match_mapped_int_operand (arg, operand); |
a1d78564 RS |
5456 | |
5457 | case OP_MSB: | |
a92713e6 | 5458 | return match_msb_operand (arg, operand); |
a1d78564 RS |
5459 | |
5460 | case OP_REG: | |
0f35dbc4 | 5461 | case OP_OPTIONAL_REG: |
a92713e6 | 5462 | return match_reg_operand (arg, operand); |
a1d78564 RS |
5463 | |
5464 | case OP_REG_PAIR: | |
a92713e6 | 5465 | return match_reg_pair_operand (arg, operand); |
a1d78564 RS |
5466 | |
5467 | case OP_PCREL: | |
a92713e6 | 5468 | return match_pcrel_operand (arg); |
a1d78564 RS |
5469 | |
5470 | case OP_PERF_REG: | |
a92713e6 | 5471 | return match_perf_reg_operand (arg, operand); |
a1d78564 RS |
5472 | |
5473 | case OP_ADDIUSP_INT: | |
a92713e6 | 5474 | return match_addiusp_operand (arg, operand); |
a1d78564 RS |
5475 | |
5476 | case OP_CLO_CLZ_DEST: | |
a92713e6 | 5477 | return match_clo_clz_dest_operand (arg, operand); |
a1d78564 RS |
5478 | |
5479 | case OP_LWM_SWM_LIST: | |
a92713e6 | 5480 | return match_lwm_swm_list_operand (arg, operand); |
a1d78564 RS |
5481 | |
5482 | case OP_ENTRY_EXIT_LIST: | |
a92713e6 | 5483 | return match_entry_exit_operand (arg, operand); |
364215c8 | 5484 | |
a1d78564 | 5485 | case OP_SAVE_RESTORE_LIST: |
a92713e6 | 5486 | return match_save_restore_list_operand (arg); |
a1d78564 RS |
5487 | |
5488 | case OP_MDMX_IMM_REG: | |
a92713e6 | 5489 | return match_mdmx_imm_reg_operand (arg, operand); |
a1d78564 RS |
5490 | |
5491 | case OP_REPEAT_DEST_REG: | |
a92713e6 | 5492 | return match_tied_reg_operand (arg, arg->dest_regno); |
a1d78564 RS |
5493 | |
5494 | case OP_REPEAT_PREV_REG: | |
a92713e6 | 5495 | return match_tied_reg_operand (arg, arg->last_regno); |
a1d78564 RS |
5496 | |
5497 | case OP_PC: | |
a92713e6 | 5498 | return match_pc_operand (arg); |
14daeee3 RS |
5499 | |
5500 | case OP_VU0_SUFFIX: | |
5501 | return match_vu0_suffix_operand (arg, operand, FALSE); | |
5502 | ||
5503 | case OP_VU0_MATCH_SUFFIX: | |
5504 | return match_vu0_suffix_operand (arg, operand, TRUE); | |
56d438b1 CF |
5505 | |
5506 | case OP_IMM_INDEX: | |
5507 | return match_imm_index_operand (arg, operand); | |
5508 | ||
5509 | case OP_REG_INDEX: | |
5510 | return match_reg_index_operand (arg, operand); | |
a1d78564 RS |
5511 | } |
5512 | abort (); | |
5513 | } | |
5514 | ||
5515 | /* ARG is the state after successfully matching an instruction. | |
5516 | Issue any queued-up warnings. */ | |
5517 | ||
5518 | static void | |
5519 | check_completed_insn (struct mips_arg_info *arg) | |
5520 | { | |
5521 | if (arg->seen_at) | |
5522 | { | |
5523 | if (AT == ATREG) | |
1661c76c | 5524 | as_warn (_("used $at without \".set noat\"")); |
a1d78564 | 5525 | else |
1661c76c | 5526 | as_warn (_("used $%u with \".set at=$%u\""), AT, AT); |
a1d78564 RS |
5527 | } |
5528 | } | |
a1d78564 | 5529 | |
85fcb30f RS |
5530 | /* Return true if modifying general-purpose register REG needs a delay. */ |
5531 | ||
5532 | static bfd_boolean | |
5533 | reg_needs_delay (unsigned int reg) | |
5534 | { | |
5535 | unsigned long prev_pinfo; | |
5536 | ||
5537 | prev_pinfo = history[0].insn_mo->pinfo; | |
5538 | if (!mips_opts.noreorder | |
67dc82bc | 5539 | && (((prev_pinfo & INSN_LOAD_MEMORY) && !gpr_interlocks) |
85fcb30f RS |
5540 | || ((prev_pinfo & INSN_LOAD_COPROC_DELAY) && !cop_interlocks)) |
5541 | && (gpr_write_mask (&history[0]) & (1 << reg))) | |
5542 | return TRUE; | |
5543 | ||
5544 | return FALSE; | |
5545 | } | |
5546 | ||
71400594 RS |
5547 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
5548 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
5549 | by VR4120 errata. */ | |
4d7206a2 | 5550 | |
71400594 RS |
5551 | static unsigned int |
5552 | classify_vr4120_insn (const char *name) | |
252b5132 | 5553 | { |
71400594 RS |
5554 | if (strncmp (name, "macc", 4) == 0) |
5555 | return FIX_VR4120_MACC; | |
5556 | if (strncmp (name, "dmacc", 5) == 0) | |
5557 | return FIX_VR4120_DMACC; | |
5558 | if (strncmp (name, "mult", 4) == 0) | |
5559 | return FIX_VR4120_MULT; | |
5560 | if (strncmp (name, "dmult", 5) == 0) | |
5561 | return FIX_VR4120_DMULT; | |
5562 | if (strstr (name, "div")) | |
5563 | return FIX_VR4120_DIV; | |
5564 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
5565 | return FIX_VR4120_MTHILO; | |
5566 | return NUM_FIX_VR4120_CLASSES; | |
5567 | } | |
252b5132 | 5568 | |
a8d14a88 CM |
5569 | #define INSN_ERET 0x42000018 |
5570 | #define INSN_DERET 0x4200001f | |
5571 | #define INSN_DMULT 0x1c | |
5572 | #define INSN_DMULTU 0x1d | |
ff239038 | 5573 | |
71400594 RS |
5574 | /* Return the number of instructions that must separate INSN1 and INSN2, |
5575 | where INSN1 is the earlier instruction. Return the worst-case value | |
5576 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 5577 | |
71400594 RS |
5578 | static unsigned int |
5579 | insns_between (const struct mips_cl_insn *insn1, | |
5580 | const struct mips_cl_insn *insn2) | |
5581 | { | |
5582 | unsigned long pinfo1, pinfo2; | |
4c260379 | 5583 | unsigned int mask; |
71400594 | 5584 | |
85fcb30f RS |
5585 | /* If INFO2 is null, pessimistically assume that all flags are set for |
5586 | the second instruction. */ | |
71400594 RS |
5587 | pinfo1 = insn1->insn_mo->pinfo; |
5588 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 5589 | |
71400594 RS |
5590 | /* For most targets, write-after-read dependencies on the HI and LO |
5591 | registers must be separated by at least two instructions. */ | |
5592 | if (!hilo_interlocks) | |
252b5132 | 5593 | { |
71400594 RS |
5594 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
5595 | return 2; | |
5596 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
5597 | return 2; | |
5598 | } | |
5599 | ||
5600 | /* If we're working around r7000 errata, there must be two instructions | |
5601 | between an mfhi or mflo and any instruction that uses the result. */ | |
5602 | if (mips_7000_hilo_fix | |
df58fc94 | 5603 | && !mips_opts.micromips |
71400594 | 5604 | && MF_HILO_INSN (pinfo1) |
85fcb30f | 5605 | && (insn2 == NULL || (gpr_read_mask (insn2) & gpr_write_mask (insn1)))) |
71400594 RS |
5606 | return 2; |
5607 | ||
ff239038 CM |
5608 | /* If we're working around 24K errata, one instruction is required |
5609 | if an ERET or DERET is followed by a branch instruction. */ | |
df58fc94 | 5610 | if (mips_fix_24k && !mips_opts.micromips) |
ff239038 CM |
5611 | { |
5612 | if (insn1->insn_opcode == INSN_ERET | |
5613 | || insn1->insn_opcode == INSN_DERET) | |
5614 | { | |
5615 | if (insn2 == NULL | |
5616 | || insn2->insn_opcode == INSN_ERET | |
5617 | || insn2->insn_opcode == INSN_DERET | |
11625dd8 | 5618 | || delayed_branch_p (insn2)) |
ff239038 CM |
5619 | return 1; |
5620 | } | |
5621 | } | |
5622 | ||
a8d14a88 CM |
5623 | /* If we're working around PMC RM7000 errata, there must be three |
5624 | nops between a dmult and a load instruction. */ | |
5625 | if (mips_fix_rm7000 && !mips_opts.micromips) | |
5626 | { | |
5627 | if ((insn1->insn_opcode & insn1->insn_mo->mask) == INSN_DMULT | |
5628 | || (insn1->insn_opcode & insn1->insn_mo->mask) == INSN_DMULTU) | |
5629 | { | |
5630 | if (pinfo2 & INSN_LOAD_MEMORY) | |
5631 | return 3; | |
5632 | } | |
5633 | } | |
5634 | ||
71400594 RS |
5635 | /* If working around VR4120 errata, check for combinations that need |
5636 | a single intervening instruction. */ | |
df58fc94 | 5637 | if (mips_fix_vr4120 && !mips_opts.micromips) |
71400594 RS |
5638 | { |
5639 | unsigned int class1, class2; | |
252b5132 | 5640 | |
71400594 RS |
5641 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
5642 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 5643 | { |
71400594 RS |
5644 | if (insn2 == NULL) |
5645 | return 1; | |
5646 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
5647 | if (vr4120_conflicts[class1] & (1 << class2)) | |
5648 | return 1; | |
252b5132 | 5649 | } |
71400594 RS |
5650 | } |
5651 | ||
df58fc94 | 5652 | if (!HAVE_CODE_COMPRESSION) |
71400594 RS |
5653 | { |
5654 | /* Check for GPR or coprocessor load delays. All such delays | |
5655 | are on the RT register. */ | |
5656 | /* Itbl support may require additional care here. */ | |
67dc82bc | 5657 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY)) |
71400594 | 5658 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC_DELAY))) |
252b5132 | 5659 | { |
85fcb30f | 5660 | if (insn2 == NULL || (gpr_read_mask (insn2) & gpr_write_mask (insn1))) |
71400594 RS |
5661 | return 1; |
5662 | } | |
5663 | ||
5664 | /* Check for generic coprocessor hazards. | |
5665 | ||
5666 | This case is not handled very well. There is no special | |
5667 | knowledge of CP0 handling, and the coprocessors other than | |
5668 | the floating point unit are not distinguished at all. */ | |
5669 | /* Itbl support may require additional care here. FIXME! | |
5670 | Need to modify this to include knowledge about | |
5671 | user specified delays! */ | |
5672 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE_DELAY)) | |
5673 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) | |
5674 | { | |
5675 | /* Handle cases where INSN1 writes to a known general coprocessor | |
5676 | register. There must be a one instruction delay before INSN2 | |
5677 | if INSN2 reads that register, otherwise no delay is needed. */ | |
4c260379 RS |
5678 | mask = fpr_write_mask (insn1); |
5679 | if (mask != 0) | |
252b5132 | 5680 | { |
4c260379 | 5681 | if (!insn2 || (mask & fpr_read_mask (insn2)) != 0) |
71400594 | 5682 | return 1; |
252b5132 RH |
5683 | } |
5684 | else | |
5685 | { | |
71400594 RS |
5686 | /* Read-after-write dependencies on the control registers |
5687 | require a two-instruction gap. */ | |
5688 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
5689 | && (pinfo2 & INSN_READ_COND_CODE)) | |
5690 | return 2; | |
5691 | ||
5692 | /* We don't know exactly what INSN1 does. If INSN2 is | |
5693 | also a coprocessor instruction, assume there must be | |
5694 | a one instruction gap. */ | |
5695 | if (pinfo2 & INSN_COP) | |
5696 | return 1; | |
252b5132 RH |
5697 | } |
5698 | } | |
6b76fefe | 5699 | |
71400594 RS |
5700 | /* Check for read-after-write dependencies on the coprocessor |
5701 | control registers in cases where INSN1 does not need a general | |
5702 | coprocessor delay. This means that INSN1 is a floating point | |
5703 | comparison instruction. */ | |
5704 | /* Itbl support may require additional care here. */ | |
5705 | else if (!cop_interlocks | |
5706 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
5707 | && (pinfo2 & INSN_READ_COND_CODE)) | |
5708 | return 1; | |
5709 | } | |
6b76fefe | 5710 | |
71400594 RS |
5711 | return 0; |
5712 | } | |
6b76fefe | 5713 | |
7d8e00cf RS |
5714 | /* Return the number of nops that would be needed to work around the |
5715 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
932d1a1b RS |
5716 | the MAX_VR4130_NOPS instructions described by HIST. Ignore hazards |
5717 | that are contained within the first IGNORE instructions of HIST. */ | |
7d8e00cf RS |
5718 | |
5719 | static int | |
932d1a1b | 5720 | nops_for_vr4130 (int ignore, const struct mips_cl_insn *hist, |
7d8e00cf RS |
5721 | const struct mips_cl_insn *insn) |
5722 | { | |
4c260379 RS |
5723 | int i, j; |
5724 | unsigned int mask; | |
7d8e00cf RS |
5725 | |
5726 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
5727 | are not affected by the errata. */ | |
5728 | if (insn != 0 | |
5729 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
5730 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
5731 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
5732 | return 0; | |
5733 | ||
5734 | /* Search for the first MFLO or MFHI. */ | |
5735 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
91d6fa6a | 5736 | if (MF_HILO_INSN (hist[i].insn_mo->pinfo)) |
7d8e00cf RS |
5737 | { |
5738 | /* Extract the destination register. */ | |
4c260379 | 5739 | mask = gpr_write_mask (&hist[i]); |
7d8e00cf RS |
5740 | |
5741 | /* No nops are needed if INSN reads that register. */ | |
4c260379 | 5742 | if (insn != NULL && (gpr_read_mask (insn) & mask) != 0) |
7d8e00cf RS |
5743 | return 0; |
5744 | ||
5745 | /* ...or if any of the intervening instructions do. */ | |
5746 | for (j = 0; j < i; j++) | |
4c260379 | 5747 | if (gpr_read_mask (&hist[j]) & mask) |
7d8e00cf RS |
5748 | return 0; |
5749 | ||
932d1a1b RS |
5750 | if (i >= ignore) |
5751 | return MAX_VR4130_NOPS - i; | |
7d8e00cf RS |
5752 | } |
5753 | return 0; | |
5754 | } | |
5755 | ||
15be625d CM |
5756 | #define BASE_REG_EQ(INSN1, INSN2) \ |
5757 | ((((INSN1) >> OP_SH_RS) & OP_MASK_RS) \ | |
5758 | == (((INSN2) >> OP_SH_RS) & OP_MASK_RS)) | |
5759 | ||
5760 | /* Return the minimum alignment for this store instruction. */ | |
5761 | ||
5762 | static int | |
5763 | fix_24k_align_to (const struct mips_opcode *mo) | |
5764 | { | |
5765 | if (strcmp (mo->name, "sh") == 0) | |
5766 | return 2; | |
5767 | ||
5768 | if (strcmp (mo->name, "swc1") == 0 | |
5769 | || strcmp (mo->name, "swc2") == 0 | |
5770 | || strcmp (mo->name, "sw") == 0 | |
5771 | || strcmp (mo->name, "sc") == 0 | |
5772 | || strcmp (mo->name, "s.s") == 0) | |
5773 | return 4; | |
5774 | ||
5775 | if (strcmp (mo->name, "sdc1") == 0 | |
5776 | || strcmp (mo->name, "sdc2") == 0 | |
5777 | || strcmp (mo->name, "s.d") == 0) | |
5778 | return 8; | |
5779 | ||
5780 | /* sb, swl, swr */ | |
5781 | return 1; | |
5782 | } | |
5783 | ||
5784 | struct fix_24k_store_info | |
5785 | { | |
5786 | /* Immediate offset, if any, for this store instruction. */ | |
5787 | short off; | |
5788 | /* Alignment required by this store instruction. */ | |
5789 | int align_to; | |
5790 | /* True for register offsets. */ | |
5791 | int register_offset; | |
5792 | }; | |
5793 | ||
5794 | /* Comparison function used by qsort. */ | |
5795 | ||
5796 | static int | |
5797 | fix_24k_sort (const void *a, const void *b) | |
5798 | { | |
5799 | const struct fix_24k_store_info *pos1 = a; | |
5800 | const struct fix_24k_store_info *pos2 = b; | |
5801 | ||
5802 | return (pos1->off - pos2->off); | |
5803 | } | |
5804 | ||
5805 | /* INSN is a store instruction. Try to record the store information | |
5806 | in STINFO. Return false if the information isn't known. */ | |
5807 | ||
5808 | static bfd_boolean | |
5809 | fix_24k_record_store_info (struct fix_24k_store_info *stinfo, | |
ab9794cf | 5810 | const struct mips_cl_insn *insn) |
15be625d CM |
5811 | { |
5812 | /* The instruction must have a known offset. */ | |
5813 | if (!insn->complete_p || !strstr (insn->insn_mo->args, "o(")) | |
5814 | return FALSE; | |
5815 | ||
5816 | stinfo->off = (insn->insn_opcode >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE; | |
5817 | stinfo->align_to = fix_24k_align_to (insn->insn_mo); | |
5818 | return TRUE; | |
5819 | } | |
5820 | ||
932d1a1b RS |
5821 | /* Return the number of nops that would be needed to work around the 24k |
5822 | "lost data on stores during refill" errata if instruction INSN | |
5823 | immediately followed the 2 instructions described by HIST. | |
5824 | Ignore hazards that are contained within the first IGNORE | |
5825 | instructions of HIST. | |
5826 | ||
5827 | Problem: The FSB (fetch store buffer) acts as an intermediate buffer | |
5828 | for the data cache refills and store data. The following describes | |
5829 | the scenario where the store data could be lost. | |
5830 | ||
5831 | * A data cache miss, due to either a load or a store, causing fill | |
5832 | data to be supplied by the memory subsystem | |
5833 | * The first three doublewords of fill data are returned and written | |
5834 | into the cache | |
5835 | * A sequence of four stores occurs in consecutive cycles around the | |
5836 | final doubleword of the fill: | |
5837 | * Store A | |
5838 | * Store B | |
5839 | * Store C | |
5840 | * Zero, One or more instructions | |
5841 | * Store D | |
5842 | ||
5843 | The four stores A-D must be to different doublewords of the line that | |
5844 | is being filled. The fourth instruction in the sequence above permits | |
5845 | the fill of the final doubleword to be transferred from the FSB into | |
5846 | the cache. In the sequence above, the stores may be either integer | |
5847 | (sb, sh, sw, swr, swl, sc) or coprocessor (swc1/swc2, sdc1/sdc2, | |
5848 | swxc1, sdxc1, suxc1) stores, as long as the four stores are to | |
5849 | different doublewords on the line. If the floating point unit is | |
5850 | running in 1:2 mode, it is not possible to create the sequence above | |
5851 | using only floating point store instructions. | |
15be625d CM |
5852 | |
5853 | In this case, the cache line being filled is incorrectly marked | |
5854 | invalid, thereby losing the data from any store to the line that | |
5855 | occurs between the original miss and the completion of the five | |
5856 | cycle sequence shown above. | |
5857 | ||
932d1a1b | 5858 | The workarounds are: |
15be625d | 5859 | |
932d1a1b RS |
5860 | * Run the data cache in write-through mode. |
5861 | * Insert a non-store instruction between | |
5862 | Store A and Store B or Store B and Store C. */ | |
15be625d CM |
5863 | |
5864 | static int | |
932d1a1b | 5865 | nops_for_24k (int ignore, const struct mips_cl_insn *hist, |
15be625d CM |
5866 | const struct mips_cl_insn *insn) |
5867 | { | |
5868 | struct fix_24k_store_info pos[3]; | |
5869 | int align, i, base_offset; | |
5870 | ||
932d1a1b RS |
5871 | if (ignore >= 2) |
5872 | return 0; | |
5873 | ||
ab9794cf RS |
5874 | /* If the previous instruction wasn't a store, there's nothing to |
5875 | worry about. */ | |
15be625d CM |
5876 | if ((hist[0].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) |
5877 | return 0; | |
5878 | ||
ab9794cf RS |
5879 | /* If the instructions after the previous one are unknown, we have |
5880 | to assume the worst. */ | |
5881 | if (!insn) | |
15be625d CM |
5882 | return 1; |
5883 | ||
ab9794cf RS |
5884 | /* Check whether we are dealing with three consecutive stores. */ |
5885 | if ((insn->insn_mo->pinfo & INSN_STORE_MEMORY) == 0 | |
5886 | || (hist[1].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) | |
15be625d CM |
5887 | return 0; |
5888 | ||
5889 | /* If we don't know the relationship between the store addresses, | |
5890 | assume the worst. */ | |
ab9794cf | 5891 | if (!BASE_REG_EQ (insn->insn_opcode, hist[0].insn_opcode) |
15be625d CM |
5892 | || !BASE_REG_EQ (insn->insn_opcode, hist[1].insn_opcode)) |
5893 | return 1; | |
5894 | ||
5895 | if (!fix_24k_record_store_info (&pos[0], insn) | |
5896 | || !fix_24k_record_store_info (&pos[1], &hist[0]) | |
5897 | || !fix_24k_record_store_info (&pos[2], &hist[1])) | |
5898 | return 1; | |
5899 | ||
5900 | qsort (&pos, 3, sizeof (struct fix_24k_store_info), fix_24k_sort); | |
5901 | ||
5902 | /* Pick a value of ALIGN and X such that all offsets are adjusted by | |
5903 | X bytes and such that the base register + X is known to be aligned | |
5904 | to align bytes. */ | |
5905 | ||
5906 | if (((insn->insn_opcode >> OP_SH_RS) & OP_MASK_RS) == SP) | |
5907 | align = 8; | |
5908 | else | |
5909 | { | |
5910 | align = pos[0].align_to; | |
5911 | base_offset = pos[0].off; | |
5912 | for (i = 1; i < 3; i++) | |
5913 | if (align < pos[i].align_to) | |
5914 | { | |
5915 | align = pos[i].align_to; | |
5916 | base_offset = pos[i].off; | |
5917 | } | |
5918 | for (i = 0; i < 3; i++) | |
5919 | pos[i].off -= base_offset; | |
5920 | } | |
5921 | ||
5922 | pos[0].off &= ~align + 1; | |
5923 | pos[1].off &= ~align + 1; | |
5924 | pos[2].off &= ~align + 1; | |
5925 | ||
5926 | /* If any two stores write to the same chunk, they also write to the | |
5927 | same doubleword. The offsets are still sorted at this point. */ | |
5928 | if (pos[0].off == pos[1].off || pos[1].off == pos[2].off) | |
5929 | return 0; | |
5930 | ||
5931 | /* A range of at least 9 bytes is needed for the stores to be in | |
5932 | non-overlapping doublewords. */ | |
5933 | if (pos[2].off - pos[0].off <= 8) | |
5934 | return 0; | |
5935 | ||
5936 | if (pos[2].off - pos[1].off >= 24 | |
5937 | || pos[1].off - pos[0].off >= 24 | |
5938 | || pos[2].off - pos[0].off >= 32) | |
5939 | return 0; | |
5940 | ||
5941 | return 1; | |
5942 | } | |
5943 | ||
71400594 | 5944 | /* Return the number of nops that would be needed if instruction INSN |
91d6fa6a | 5945 | immediately followed the MAX_NOPS instructions given by HIST, |
932d1a1b RS |
5946 | where HIST[0] is the most recent instruction. Ignore hazards |
5947 | between INSN and the first IGNORE instructions in HIST. | |
5948 | ||
5949 | If INSN is null, return the worse-case number of nops for any | |
5950 | instruction. */ | |
bdaaa2e1 | 5951 | |
71400594 | 5952 | static int |
932d1a1b | 5953 | nops_for_insn (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
5954 | const struct mips_cl_insn *insn) |
5955 | { | |
5956 | int i, nops, tmp_nops; | |
bdaaa2e1 | 5957 | |
71400594 | 5958 | nops = 0; |
932d1a1b | 5959 | for (i = ignore; i < MAX_DELAY_NOPS; i++) |
65b02341 | 5960 | { |
91d6fa6a | 5961 | tmp_nops = insns_between (hist + i, insn) - i; |
65b02341 RS |
5962 | if (tmp_nops > nops) |
5963 | nops = tmp_nops; | |
5964 | } | |
7d8e00cf | 5965 | |
df58fc94 | 5966 | if (mips_fix_vr4130 && !mips_opts.micromips) |
7d8e00cf | 5967 | { |
932d1a1b | 5968 | tmp_nops = nops_for_vr4130 (ignore, hist, insn); |
7d8e00cf RS |
5969 | if (tmp_nops > nops) |
5970 | nops = tmp_nops; | |
5971 | } | |
5972 | ||
df58fc94 | 5973 | if (mips_fix_24k && !mips_opts.micromips) |
15be625d | 5974 | { |
932d1a1b | 5975 | tmp_nops = nops_for_24k (ignore, hist, insn); |
15be625d CM |
5976 | if (tmp_nops > nops) |
5977 | nops = tmp_nops; | |
5978 | } | |
5979 | ||
71400594 RS |
5980 | return nops; |
5981 | } | |
252b5132 | 5982 | |
71400594 | 5983 | /* The variable arguments provide NUM_INSNS extra instructions that |
91d6fa6a | 5984 | might be added to HIST. Return the largest number of nops that |
932d1a1b RS |
5985 | would be needed after the extended sequence, ignoring hazards |
5986 | in the first IGNORE instructions. */ | |
252b5132 | 5987 | |
71400594 | 5988 | static int |
932d1a1b RS |
5989 | nops_for_sequence (int num_insns, int ignore, |
5990 | const struct mips_cl_insn *hist, ...) | |
71400594 RS |
5991 | { |
5992 | va_list args; | |
5993 | struct mips_cl_insn buffer[MAX_NOPS]; | |
5994 | struct mips_cl_insn *cursor; | |
5995 | int nops; | |
5996 | ||
91d6fa6a | 5997 | va_start (args, hist); |
71400594 | 5998 | cursor = buffer + num_insns; |
91d6fa6a | 5999 | memcpy (cursor, hist, (MAX_NOPS - num_insns) * sizeof (*cursor)); |
71400594 RS |
6000 | while (cursor > buffer) |
6001 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
6002 | ||
932d1a1b | 6003 | nops = nops_for_insn (ignore, buffer, NULL); |
71400594 RS |
6004 | va_end (args); |
6005 | return nops; | |
6006 | } | |
252b5132 | 6007 | |
71400594 RS |
6008 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
6009 | worst-case delay for the branch target. */ | |
252b5132 | 6010 | |
71400594 | 6011 | static int |
932d1a1b | 6012 | nops_for_insn_or_target (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
6013 | const struct mips_cl_insn *insn) |
6014 | { | |
6015 | int nops, tmp_nops; | |
60b63b72 | 6016 | |
932d1a1b | 6017 | nops = nops_for_insn (ignore, hist, insn); |
11625dd8 | 6018 | if (delayed_branch_p (insn)) |
71400594 | 6019 | { |
932d1a1b | 6020 | tmp_nops = nops_for_sequence (2, ignore ? ignore + 2 : 0, |
14fe068b | 6021 | hist, insn, get_delay_slot_nop (insn)); |
71400594 RS |
6022 | if (tmp_nops > nops) |
6023 | nops = tmp_nops; | |
6024 | } | |
11625dd8 | 6025 | else if (compact_branch_p (insn)) |
71400594 | 6026 | { |
932d1a1b | 6027 | tmp_nops = nops_for_sequence (1, ignore ? ignore + 1 : 0, hist, insn); |
71400594 RS |
6028 | if (tmp_nops > nops) |
6029 | nops = tmp_nops; | |
6030 | } | |
6031 | return nops; | |
6032 | } | |
6033 | ||
c67a084a NC |
6034 | /* Fix NOP issue: Replace nops by "or at,at,zero". */ |
6035 | ||
6036 | static void | |
6037 | fix_loongson2f_nop (struct mips_cl_insn * ip) | |
6038 | { | |
df58fc94 | 6039 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
6040 | if (strcmp (ip->insn_mo->name, "nop") == 0) |
6041 | ip->insn_opcode = LOONGSON2F_NOP_INSN; | |
6042 | } | |
6043 | ||
6044 | /* Fix Jump Issue: Eliminate instruction fetch from outside 256M region | |
6045 | jr target pc &= 'hffff_ffff_cfff_ffff. */ | |
6046 | ||
6047 | static void | |
6048 | fix_loongson2f_jump (struct mips_cl_insn * ip) | |
6049 | { | |
df58fc94 | 6050 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
6051 | if (strcmp (ip->insn_mo->name, "j") == 0 |
6052 | || strcmp (ip->insn_mo->name, "jr") == 0 | |
6053 | || strcmp (ip->insn_mo->name, "jalr") == 0) | |
6054 | { | |
6055 | int sreg; | |
6056 | expressionS ep; | |
6057 | ||
6058 | if (! mips_opts.at) | |
6059 | return; | |
6060 | ||
df58fc94 | 6061 | sreg = EXTRACT_OPERAND (0, RS, *ip); |
c67a084a NC |
6062 | if (sreg == ZERO || sreg == KT0 || sreg == KT1 || sreg == ATREG) |
6063 | return; | |
6064 | ||
6065 | ep.X_op = O_constant; | |
6066 | ep.X_add_number = 0xcfff0000; | |
6067 | macro_build (&ep, "lui", "t,u", ATREG, BFD_RELOC_HI16); | |
6068 | ep.X_add_number = 0xffff; | |
6069 | macro_build (&ep, "ori", "t,r,i", ATREG, ATREG, BFD_RELOC_LO16); | |
6070 | macro_build (NULL, "and", "d,v,t", sreg, sreg, ATREG); | |
6071 | } | |
6072 | } | |
6073 | ||
6074 | static void | |
6075 | fix_loongson2f (struct mips_cl_insn * ip) | |
6076 | { | |
6077 | if (mips_fix_loongson2f_nop) | |
6078 | fix_loongson2f_nop (ip); | |
6079 | ||
6080 | if (mips_fix_loongson2f_jump) | |
6081 | fix_loongson2f_jump (ip); | |
6082 | } | |
6083 | ||
a4e06468 RS |
6084 | /* IP is a branch that has a delay slot, and we need to fill it |
6085 | automatically. Return true if we can do that by swapping IP | |
e407c74b NC |
6086 | with the previous instruction. |
6087 | ADDRESS_EXPR is an operand of the instruction to be used with | |
6088 | RELOC_TYPE. */ | |
a4e06468 RS |
6089 | |
6090 | static bfd_boolean | |
e407c74b | 6091 | can_swap_branch_p (struct mips_cl_insn *ip, expressionS *address_expr, |
26545944 | 6092 | bfd_reloc_code_real_type *reloc_type) |
a4e06468 | 6093 | { |
2b0c8b40 | 6094 | unsigned long pinfo, pinfo2, prev_pinfo, prev_pinfo2; |
a4e06468 | 6095 | unsigned int gpr_read, gpr_write, prev_gpr_read, prev_gpr_write; |
9d5de888 | 6096 | unsigned int fpr_read, prev_fpr_write; |
a4e06468 RS |
6097 | |
6098 | /* -O2 and above is required for this optimization. */ | |
6099 | if (mips_optimize < 2) | |
6100 | return FALSE; | |
6101 | ||
6102 | /* If we have seen .set volatile or .set nomove, don't optimize. */ | |
6103 | if (mips_opts.nomove) | |
6104 | return FALSE; | |
6105 | ||
6106 | /* We can't swap if the previous instruction's position is fixed. */ | |
6107 | if (history[0].fixed_p) | |
6108 | return FALSE; | |
6109 | ||
6110 | /* If the previous previous insn was in a .set noreorder, we can't | |
6111 | swap. Actually, the MIPS assembler will swap in this situation. | |
6112 | However, gcc configured -with-gnu-as will generate code like | |
6113 | ||
6114 | .set noreorder | |
6115 | lw $4,XXX | |
6116 | .set reorder | |
6117 | INSN | |
6118 | bne $4,$0,foo | |
6119 | ||
6120 | in which we can not swap the bne and INSN. If gcc is not configured | |
6121 | -with-gnu-as, it does not output the .set pseudo-ops. */ | |
6122 | if (history[1].noreorder_p) | |
6123 | return FALSE; | |
6124 | ||
87333bb7 MR |
6125 | /* If the previous instruction had a fixup in mips16 mode, we can not swap. |
6126 | This means that the previous instruction was a 4-byte one anyhow. */ | |
a4e06468 RS |
6127 | if (mips_opts.mips16 && history[0].fixp[0]) |
6128 | return FALSE; | |
6129 | ||
6130 | /* If the branch is itself the target of a branch, we can not swap. | |
6131 | We cheat on this; all we check for is whether there is a label on | |
6132 | this instruction. If there are any branches to anything other than | |
6133 | a label, users must use .set noreorder. */ | |
6134 | if (seg_info (now_seg)->label_list) | |
6135 | return FALSE; | |
6136 | ||
6137 | /* If the previous instruction is in a variant frag other than this | |
2309ddf2 | 6138 | branch's one, we cannot do the swap. This does not apply to |
9301f9c3 MR |
6139 | MIPS16 code, which uses variant frags for different purposes. */ |
6140 | if (!mips_opts.mips16 | |
a4e06468 RS |
6141 | && history[0].frag |
6142 | && history[0].frag->fr_type == rs_machine_dependent) | |
6143 | return FALSE; | |
6144 | ||
bcd530a7 RS |
6145 | /* We do not swap with instructions that cannot architecturally |
6146 | be placed in a branch delay slot, such as SYNC or ERET. We | |
6147 | also refrain from swapping with a trap instruction, since it | |
6148 | complicates trap handlers to have the trap instruction be in | |
6149 | a delay slot. */ | |
a4e06468 | 6150 | prev_pinfo = history[0].insn_mo->pinfo; |
bcd530a7 | 6151 | if (prev_pinfo & INSN_NO_DELAY_SLOT) |
a4e06468 RS |
6152 | return FALSE; |
6153 | ||
6154 | /* Check for conflicts between the branch and the instructions | |
6155 | before the candidate delay slot. */ | |
6156 | if (nops_for_insn (0, history + 1, ip) > 0) | |
6157 | return FALSE; | |
6158 | ||
6159 | /* Check for conflicts between the swapped sequence and the | |
6160 | target of the branch. */ | |
6161 | if (nops_for_sequence (2, 0, history + 1, ip, history) > 0) | |
6162 | return FALSE; | |
6163 | ||
6164 | /* If the branch reads a register that the previous | |
6165 | instruction sets, we can not swap. */ | |
6166 | gpr_read = gpr_read_mask (ip); | |
6167 | prev_gpr_write = gpr_write_mask (&history[0]); | |
6168 | if (gpr_read & prev_gpr_write) | |
6169 | return FALSE; | |
6170 | ||
9d5de888 CF |
6171 | fpr_read = fpr_read_mask (ip); |
6172 | prev_fpr_write = fpr_write_mask (&history[0]); | |
6173 | if (fpr_read & prev_fpr_write) | |
6174 | return FALSE; | |
6175 | ||
a4e06468 RS |
6176 | /* If the branch writes a register that the previous |
6177 | instruction sets, we can not swap. */ | |
6178 | gpr_write = gpr_write_mask (ip); | |
6179 | if (gpr_write & prev_gpr_write) | |
6180 | return FALSE; | |
6181 | ||
6182 | /* If the branch writes a register that the previous | |
6183 | instruction reads, we can not swap. */ | |
6184 | prev_gpr_read = gpr_read_mask (&history[0]); | |
6185 | if (gpr_write & prev_gpr_read) | |
6186 | return FALSE; | |
6187 | ||
6188 | /* If one instruction sets a condition code and the | |
6189 | other one uses a condition code, we can not swap. */ | |
6190 | pinfo = ip->insn_mo->pinfo; | |
6191 | if ((pinfo & INSN_READ_COND_CODE) | |
6192 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
6193 | return FALSE; | |
6194 | if ((pinfo & INSN_WRITE_COND_CODE) | |
6195 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
6196 | return FALSE; | |
6197 | ||
6198 | /* If the previous instruction uses the PC, we can not swap. */ | |
2b0c8b40 | 6199 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
26545944 | 6200 | if (prev_pinfo2 & INSN2_READ_PC) |
2b0c8b40 | 6201 | return FALSE; |
a4e06468 | 6202 | |
df58fc94 RS |
6203 | /* If the previous instruction has an incorrect size for a fixed |
6204 | branch delay slot in microMIPS mode, we cannot swap. */ | |
2309ddf2 MR |
6205 | pinfo2 = ip->insn_mo->pinfo2; |
6206 | if (mips_opts.micromips | |
6207 | && (pinfo2 & INSN2_BRANCH_DELAY_16BIT) | |
6208 | && insn_length (history) != 2) | |
6209 | return FALSE; | |
6210 | if (mips_opts.micromips | |
6211 | && (pinfo2 & INSN2_BRANCH_DELAY_32BIT) | |
6212 | && insn_length (history) != 4) | |
6213 | return FALSE; | |
6214 | ||
e407c74b NC |
6215 | /* On R5900 short loops need to be fixed by inserting a nop in |
6216 | the branch delay slots. | |
6217 | A short loop can be terminated too early. */ | |
6218 | if (mips_opts.arch == CPU_R5900 | |
6219 | /* Check if instruction has a parameter, ignore "j $31". */ | |
6220 | && (address_expr != NULL) | |
6221 | /* Parameter must be 16 bit. */ | |
6222 | && (*reloc_type == BFD_RELOC_16_PCREL_S2) | |
6223 | /* Branch to same segment. */ | |
6224 | && (S_GET_SEGMENT(address_expr->X_add_symbol) == now_seg) | |
6225 | /* Branch to same code fragment. */ | |
6226 | && (symbol_get_frag(address_expr->X_add_symbol) == frag_now) | |
6227 | /* Can only calculate branch offset if value is known. */ | |
6228 | && symbol_constant_p(address_expr->X_add_symbol) | |
6229 | /* Check if branch is really conditional. */ | |
6230 | && !((ip->insn_opcode & 0xffff0000) == 0x10000000 /* beq $0,$0 */ | |
6231 | || (ip->insn_opcode & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
6232 | || (ip->insn_opcode & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
6233 | { | |
6234 | int distance; | |
6235 | /* Check if loop is shorter than 6 instructions including | |
6236 | branch and delay slot. */ | |
6237 | distance = frag_now_fix() - S_GET_VALUE(address_expr->X_add_symbol); | |
6238 | if (distance <= 20) | |
6239 | { | |
6240 | int i; | |
6241 | int rv; | |
6242 | ||
6243 | rv = FALSE; | |
6244 | /* When the loop includes branches or jumps, | |
6245 | it is not a short loop. */ | |
6246 | for (i = 0; i < (distance / 4); i++) | |
6247 | { | |
6248 | if ((history[i].cleared_p) | |
6249 | || delayed_branch_p(&history[i])) | |
6250 | { | |
6251 | rv = TRUE; | |
6252 | break; | |
6253 | } | |
6254 | } | |
6255 | if (rv == FALSE) | |
6256 | { | |
6257 | /* Insert nop after branch to fix short loop. */ | |
6258 | return FALSE; | |
6259 | } | |
6260 | } | |
6261 | } | |
6262 | ||
a4e06468 RS |
6263 | return TRUE; |
6264 | } | |
6265 | ||
e407c74b NC |
6266 | /* Decide how we should add IP to the instruction stream. |
6267 | ADDRESS_EXPR is an operand of the instruction to be used with | |
6268 | RELOC_TYPE. */ | |
a4e06468 RS |
6269 | |
6270 | static enum append_method | |
e407c74b | 6271 | get_append_method (struct mips_cl_insn *ip, expressionS *address_expr, |
26545944 | 6272 | bfd_reloc_code_real_type *reloc_type) |
a4e06468 | 6273 | { |
a4e06468 RS |
6274 | /* The relaxed version of a macro sequence must be inherently |
6275 | hazard-free. */ | |
6276 | if (mips_relax.sequence == 2) | |
6277 | return APPEND_ADD; | |
6278 | ||
6279 | /* We must not dabble with instructions in a ".set norerorder" block. */ | |
6280 | if (mips_opts.noreorder) | |
6281 | return APPEND_ADD; | |
6282 | ||
6283 | /* Otherwise, it's our responsibility to fill branch delay slots. */ | |
11625dd8 | 6284 | if (delayed_branch_p (ip)) |
a4e06468 | 6285 | { |
e407c74b NC |
6286 | if (!branch_likely_p (ip) |
6287 | && can_swap_branch_p (ip, address_expr, reloc_type)) | |
a4e06468 RS |
6288 | return APPEND_SWAP; |
6289 | ||
6290 | if (mips_opts.mips16 | |
6291 | && ISA_SUPPORTS_MIPS16E | |
fc76e730 | 6292 | && gpr_read_mask (ip) != 0) |
a4e06468 RS |
6293 | return APPEND_ADD_COMPACT; |
6294 | ||
6295 | return APPEND_ADD_WITH_NOP; | |
6296 | } | |
6297 | ||
a4e06468 RS |
6298 | return APPEND_ADD; |
6299 | } | |
6300 | ||
ceb94aa5 RS |
6301 | /* IP is a MIPS16 instruction whose opcode we have just changed. |
6302 | Point IP->insn_mo to the new opcode's definition. */ | |
6303 | ||
6304 | static void | |
6305 | find_altered_mips16_opcode (struct mips_cl_insn *ip) | |
6306 | { | |
6307 | const struct mips_opcode *mo, *end; | |
6308 | ||
6309 | end = &mips16_opcodes[bfd_mips16_num_opcodes]; | |
6310 | for (mo = ip->insn_mo; mo < end; mo++) | |
6311 | if ((ip->insn_opcode & mo->mask) == mo->match) | |
6312 | { | |
6313 | ip->insn_mo = mo; | |
6314 | return; | |
6315 | } | |
6316 | abort (); | |
6317 | } | |
6318 | ||
df58fc94 RS |
6319 | /* For microMIPS macros, we need to generate a local number label |
6320 | as the target of branches. */ | |
6321 | #define MICROMIPS_LABEL_CHAR '\037' | |
6322 | static unsigned long micromips_target_label; | |
6323 | static char micromips_target_name[32]; | |
6324 | ||
6325 | static char * | |
6326 | micromips_label_name (void) | |
6327 | { | |
6328 | char *p = micromips_target_name; | |
6329 | char symbol_name_temporary[24]; | |
6330 | unsigned long l; | |
6331 | int i; | |
6332 | ||
6333 | if (*p) | |
6334 | return p; | |
6335 | ||
6336 | i = 0; | |
6337 | l = micromips_target_label; | |
6338 | #ifdef LOCAL_LABEL_PREFIX | |
6339 | *p++ = LOCAL_LABEL_PREFIX; | |
6340 | #endif | |
6341 | *p++ = 'L'; | |
6342 | *p++ = MICROMIPS_LABEL_CHAR; | |
6343 | do | |
6344 | { | |
6345 | symbol_name_temporary[i++] = l % 10 + '0'; | |
6346 | l /= 10; | |
6347 | } | |
6348 | while (l != 0); | |
6349 | while (i > 0) | |
6350 | *p++ = symbol_name_temporary[--i]; | |
6351 | *p = '\0'; | |
6352 | ||
6353 | return micromips_target_name; | |
6354 | } | |
6355 | ||
6356 | static void | |
6357 | micromips_label_expr (expressionS *label_expr) | |
6358 | { | |
6359 | label_expr->X_op = O_symbol; | |
6360 | label_expr->X_add_symbol = symbol_find_or_make (micromips_label_name ()); | |
6361 | label_expr->X_add_number = 0; | |
6362 | } | |
6363 | ||
6364 | static void | |
6365 | micromips_label_inc (void) | |
6366 | { | |
6367 | micromips_target_label++; | |
6368 | *micromips_target_name = '\0'; | |
6369 | } | |
6370 | ||
6371 | static void | |
6372 | micromips_add_label (void) | |
6373 | { | |
6374 | symbolS *s; | |
6375 | ||
6376 | s = colon (micromips_label_name ()); | |
6377 | micromips_label_inc (); | |
f3ded42a | 6378 | S_SET_OTHER (s, ELF_ST_SET_MICROMIPS (S_GET_OTHER (s))); |
df58fc94 RS |
6379 | } |
6380 | ||
6381 | /* If assembling microMIPS code, then return the microMIPS reloc | |
6382 | corresponding to the requested one if any. Otherwise return | |
6383 | the reloc unchanged. */ | |
6384 | ||
6385 | static bfd_reloc_code_real_type | |
6386 | micromips_map_reloc (bfd_reloc_code_real_type reloc) | |
6387 | { | |
6388 | static const bfd_reloc_code_real_type relocs[][2] = | |
6389 | { | |
6390 | /* Keep sorted incrementally by the left-hand key. */ | |
6391 | { BFD_RELOC_16_PCREL_S2, BFD_RELOC_MICROMIPS_16_PCREL_S1 }, | |
6392 | { BFD_RELOC_GPREL16, BFD_RELOC_MICROMIPS_GPREL16 }, | |
6393 | { BFD_RELOC_MIPS_JMP, BFD_RELOC_MICROMIPS_JMP }, | |
6394 | { BFD_RELOC_HI16, BFD_RELOC_MICROMIPS_HI16 }, | |
6395 | { BFD_RELOC_HI16_S, BFD_RELOC_MICROMIPS_HI16_S }, | |
6396 | { BFD_RELOC_LO16, BFD_RELOC_MICROMIPS_LO16 }, | |
6397 | { BFD_RELOC_MIPS_LITERAL, BFD_RELOC_MICROMIPS_LITERAL }, | |
6398 | { BFD_RELOC_MIPS_GOT16, BFD_RELOC_MICROMIPS_GOT16 }, | |
6399 | { BFD_RELOC_MIPS_CALL16, BFD_RELOC_MICROMIPS_CALL16 }, | |
6400 | { BFD_RELOC_MIPS_GOT_HI16, BFD_RELOC_MICROMIPS_GOT_HI16 }, | |
6401 | { BFD_RELOC_MIPS_GOT_LO16, BFD_RELOC_MICROMIPS_GOT_LO16 }, | |
6402 | { BFD_RELOC_MIPS_CALL_HI16, BFD_RELOC_MICROMIPS_CALL_HI16 }, | |
6403 | { BFD_RELOC_MIPS_CALL_LO16, BFD_RELOC_MICROMIPS_CALL_LO16 }, | |
6404 | { BFD_RELOC_MIPS_SUB, BFD_RELOC_MICROMIPS_SUB }, | |
6405 | { BFD_RELOC_MIPS_GOT_PAGE, BFD_RELOC_MICROMIPS_GOT_PAGE }, | |
6406 | { BFD_RELOC_MIPS_GOT_OFST, BFD_RELOC_MICROMIPS_GOT_OFST }, | |
6407 | { BFD_RELOC_MIPS_GOT_DISP, BFD_RELOC_MICROMIPS_GOT_DISP }, | |
6408 | { BFD_RELOC_MIPS_HIGHEST, BFD_RELOC_MICROMIPS_HIGHEST }, | |
6409 | { BFD_RELOC_MIPS_HIGHER, BFD_RELOC_MICROMIPS_HIGHER }, | |
6410 | { BFD_RELOC_MIPS_SCN_DISP, BFD_RELOC_MICROMIPS_SCN_DISP }, | |
6411 | { BFD_RELOC_MIPS_TLS_GD, BFD_RELOC_MICROMIPS_TLS_GD }, | |
6412 | { BFD_RELOC_MIPS_TLS_LDM, BFD_RELOC_MICROMIPS_TLS_LDM }, | |
6413 | { BFD_RELOC_MIPS_TLS_DTPREL_HI16, BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16 }, | |
6414 | { BFD_RELOC_MIPS_TLS_DTPREL_LO16, BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16 }, | |
6415 | { BFD_RELOC_MIPS_TLS_GOTTPREL, BFD_RELOC_MICROMIPS_TLS_GOTTPREL }, | |
6416 | { BFD_RELOC_MIPS_TLS_TPREL_HI16, BFD_RELOC_MICROMIPS_TLS_TPREL_HI16 }, | |
6417 | { BFD_RELOC_MIPS_TLS_TPREL_LO16, BFD_RELOC_MICROMIPS_TLS_TPREL_LO16 } | |
6418 | }; | |
6419 | bfd_reloc_code_real_type r; | |
6420 | size_t i; | |
6421 | ||
6422 | if (!mips_opts.micromips) | |
6423 | return reloc; | |
6424 | for (i = 0; i < ARRAY_SIZE (relocs); i++) | |
6425 | { | |
6426 | r = relocs[i][0]; | |
6427 | if (r > reloc) | |
6428 | return reloc; | |
6429 | if (r == reloc) | |
6430 | return relocs[i][1]; | |
6431 | } | |
6432 | return reloc; | |
6433 | } | |
6434 | ||
b886a2ab RS |
6435 | /* Try to resolve relocation RELOC against constant OPERAND at assembly time. |
6436 | Return true on success, storing the resolved value in RESULT. */ | |
6437 | ||
6438 | static bfd_boolean | |
6439 | calculate_reloc (bfd_reloc_code_real_type reloc, offsetT operand, | |
6440 | offsetT *result) | |
6441 | { | |
6442 | switch (reloc) | |
6443 | { | |
6444 | case BFD_RELOC_MIPS_HIGHEST: | |
6445 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
6446 | *result = ((operand + 0x800080008000ull) >> 48) & 0xffff; | |
6447 | return TRUE; | |
6448 | ||
6449 | case BFD_RELOC_MIPS_HIGHER: | |
6450 | case BFD_RELOC_MICROMIPS_HIGHER: | |
6451 | *result = ((operand + 0x80008000ull) >> 32) & 0xffff; | |
6452 | return TRUE; | |
6453 | ||
6454 | case BFD_RELOC_HI16_S: | |
6455 | case BFD_RELOC_MICROMIPS_HI16_S: | |
6456 | case BFD_RELOC_MIPS16_HI16_S: | |
6457 | *result = ((operand + 0x8000) >> 16) & 0xffff; | |
6458 | return TRUE; | |
6459 | ||
6460 | case BFD_RELOC_HI16: | |
6461 | case BFD_RELOC_MICROMIPS_HI16: | |
6462 | case BFD_RELOC_MIPS16_HI16: | |
6463 | *result = (operand >> 16) & 0xffff; | |
6464 | return TRUE; | |
6465 | ||
6466 | case BFD_RELOC_LO16: | |
6467 | case BFD_RELOC_MICROMIPS_LO16: | |
6468 | case BFD_RELOC_MIPS16_LO16: | |
6469 | *result = operand & 0xffff; | |
6470 | return TRUE; | |
6471 | ||
6472 | case BFD_RELOC_UNUSED: | |
6473 | *result = operand; | |
6474 | return TRUE; | |
6475 | ||
6476 | default: | |
6477 | return FALSE; | |
6478 | } | |
6479 | } | |
6480 | ||
71400594 RS |
6481 | /* Output an instruction. IP is the instruction information. |
6482 | ADDRESS_EXPR is an operand of the instruction to be used with | |
df58fc94 RS |
6483 | RELOC_TYPE. EXPANSIONP is true if the instruction is part of |
6484 | a macro expansion. */ | |
71400594 RS |
6485 | |
6486 | static void | |
6487 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
df58fc94 | 6488 | bfd_reloc_code_real_type *reloc_type, bfd_boolean expansionp) |
71400594 | 6489 | { |
14fe068b | 6490 | unsigned long prev_pinfo2, pinfo; |
71400594 | 6491 | bfd_boolean relaxed_branch = FALSE; |
a4e06468 | 6492 | enum append_method method; |
2309ddf2 | 6493 | bfd_boolean relax32; |
2b0c8b40 | 6494 | int branch_disp; |
71400594 | 6495 | |
2309ddf2 | 6496 | if (mips_fix_loongson2f && !HAVE_CODE_COMPRESSION) |
c67a084a NC |
6497 | fix_loongson2f (ip); |
6498 | ||
738f4d98 | 6499 | file_ase_mips16 |= mips_opts.mips16; |
df58fc94 | 6500 | file_ase_micromips |= mips_opts.micromips; |
738f4d98 | 6501 | |
df58fc94 | 6502 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
71400594 | 6503 | pinfo = ip->insn_mo->pinfo; |
df58fc94 RS |
6504 | |
6505 | if (mips_opts.micromips | |
6506 | && !expansionp | |
6507 | && (((prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
6508 | && micromips_insn_length (ip->insn_mo) != 2) | |
6509 | || ((prev_pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 | |
6510 | && micromips_insn_length (ip->insn_mo) != 4))) | |
1661c76c | 6511 | as_warn (_("wrong size instruction in a %u-bit branch delay slot"), |
df58fc94 | 6512 | (prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 ? 16 : 32); |
71400594 | 6513 | |
15be625d CM |
6514 | if (address_expr == NULL) |
6515 | ip->complete_p = 1; | |
b886a2ab RS |
6516 | else if (reloc_type[0] <= BFD_RELOC_UNUSED |
6517 | && reloc_type[1] == BFD_RELOC_UNUSED | |
6518 | && reloc_type[2] == BFD_RELOC_UNUSED | |
15be625d CM |
6519 | && address_expr->X_op == O_constant) |
6520 | { | |
15be625d CM |
6521 | switch (*reloc_type) |
6522 | { | |
15be625d | 6523 | case BFD_RELOC_MIPS_JMP: |
df58fc94 RS |
6524 | { |
6525 | int shift; | |
6526 | ||
6527 | shift = mips_opts.micromips ? 1 : 2; | |
6528 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
6529 | as_bad (_("jump to misaligned address (0x%lx)"), | |
6530 | (unsigned long) address_expr->X_add_number); | |
6531 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
6532 | & 0x3ffffff); | |
335574df | 6533 | ip->complete_p = 1; |
df58fc94 | 6534 | } |
15be625d CM |
6535 | break; |
6536 | ||
6537 | case BFD_RELOC_MIPS16_JMP: | |
6538 | if ((address_expr->X_add_number & 3) != 0) | |
6539 | as_bad (_("jump to misaligned address (0x%lx)"), | |
6540 | (unsigned long) address_expr->X_add_number); | |
6541 | ip->insn_opcode |= | |
6542 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
6543 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
6544 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
335574df | 6545 | ip->complete_p = 1; |
15be625d CM |
6546 | break; |
6547 | ||
6548 | case BFD_RELOC_16_PCREL_S2: | |
df58fc94 RS |
6549 | { |
6550 | int shift; | |
6551 | ||
6552 | shift = mips_opts.micromips ? 1 : 2; | |
6553 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
6554 | as_bad (_("branch to misaligned address (0x%lx)"), | |
6555 | (unsigned long) address_expr->X_add_number); | |
6556 | if (!mips_relax_branch) | |
6557 | { | |
6558 | if ((address_expr->X_add_number + (1 << (shift + 15))) | |
6559 | & ~((1 << (shift + 16)) - 1)) | |
6560 | as_bad (_("branch address range overflow (0x%lx)"), | |
6561 | (unsigned long) address_expr->X_add_number); | |
6562 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
6563 | & 0xffff); | |
6564 | } | |
df58fc94 | 6565 | } |
15be625d CM |
6566 | break; |
6567 | ||
6568 | default: | |
b886a2ab RS |
6569 | { |
6570 | offsetT value; | |
6571 | ||
6572 | if (calculate_reloc (*reloc_type, address_expr->X_add_number, | |
6573 | &value)) | |
6574 | { | |
6575 | ip->insn_opcode |= value & 0xffff; | |
6576 | ip->complete_p = 1; | |
6577 | } | |
6578 | } | |
6579 | break; | |
6580 | } | |
15be625d CM |
6581 | } |
6582 | ||
71400594 RS |
6583 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
6584 | { | |
6585 | /* There are a lot of optimizations we could do that we don't. | |
6586 | In particular, we do not, in general, reorder instructions. | |
6587 | If you use gcc with optimization, it will reorder | |
6588 | instructions and generally do much more optimization then we | |
6589 | do here; repeating all that work in the assembler would only | |
6590 | benefit hand written assembly code, and does not seem worth | |
6591 | it. */ | |
6592 | int nops = (mips_optimize == 0 | |
932d1a1b RS |
6593 | ? nops_for_insn (0, history, NULL) |
6594 | : nops_for_insn_or_target (0, history, ip)); | |
71400594 | 6595 | if (nops > 0) |
252b5132 RH |
6596 | { |
6597 | fragS *old_frag; | |
6598 | unsigned long old_frag_offset; | |
6599 | int i; | |
252b5132 RH |
6600 | |
6601 | old_frag = frag_now; | |
6602 | old_frag_offset = frag_now_fix (); | |
6603 | ||
6604 | for (i = 0; i < nops; i++) | |
14fe068b RS |
6605 | add_fixed_insn (NOP_INSN); |
6606 | insert_into_history (0, nops, NOP_INSN); | |
252b5132 RH |
6607 | |
6608 | if (listing) | |
6609 | { | |
6610 | listing_prev_line (); | |
6611 | /* We may be at the start of a variant frag. In case we | |
6612 | are, make sure there is enough space for the frag | |
6613 | after the frags created by listing_prev_line. The | |
6614 | argument to frag_grow here must be at least as large | |
6615 | as the argument to all other calls to frag_grow in | |
6616 | this file. We don't have to worry about being in the | |
6617 | middle of a variant frag, because the variants insert | |
6618 | all needed nop instructions themselves. */ | |
6619 | frag_grow (40); | |
6620 | } | |
6621 | ||
462427c4 | 6622 | mips_move_text_labels (); |
252b5132 RH |
6623 | |
6624 | #ifndef NO_ECOFF_DEBUGGING | |
6625 | if (ECOFF_DEBUGGING) | |
6626 | ecoff_fix_loc (old_frag, old_frag_offset); | |
6627 | #endif | |
6628 | } | |
71400594 RS |
6629 | } |
6630 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
6631 | { | |
932d1a1b RS |
6632 | int nops; |
6633 | ||
6634 | /* Work out how many nops in prev_nop_frag are needed by IP, | |
6635 | ignoring hazards generated by the first prev_nop_frag_since | |
6636 | instructions. */ | |
6637 | nops = nops_for_insn_or_target (prev_nop_frag_since, history, ip); | |
9c2799c2 | 6638 | gas_assert (nops <= prev_nop_frag_holds); |
252b5132 | 6639 | |
71400594 RS |
6640 | /* Enforce NOPS as a minimum. */ |
6641 | if (nops > prev_nop_frag_required) | |
6642 | prev_nop_frag_required = nops; | |
252b5132 | 6643 | |
71400594 RS |
6644 | if (prev_nop_frag_holds == prev_nop_frag_required) |
6645 | { | |
6646 | /* Settle for the current number of nops. Update the history | |
6647 | accordingly (for the benefit of any future .set reorder code). */ | |
6648 | prev_nop_frag = NULL; | |
6649 | insert_into_history (prev_nop_frag_since, | |
6650 | prev_nop_frag_holds, NOP_INSN); | |
6651 | } | |
6652 | else | |
6653 | { | |
6654 | /* Allow this instruction to replace one of the nops that was | |
6655 | tentatively added to prev_nop_frag. */ | |
df58fc94 | 6656 | prev_nop_frag->fr_fix -= NOP_INSN_SIZE; |
71400594 RS |
6657 | prev_nop_frag_holds--; |
6658 | prev_nop_frag_since++; | |
252b5132 RH |
6659 | } |
6660 | } | |
6661 | ||
e407c74b | 6662 | method = get_append_method (ip, address_expr, reloc_type); |
2b0c8b40 | 6663 | branch_disp = method == APPEND_SWAP ? insn_length (history) : 0; |
a4e06468 | 6664 | |
e410add4 RS |
6665 | dwarf2_emit_insn (0); |
6666 | /* We want MIPS16 and microMIPS debug info to use ISA-encoded addresses, | |
6667 | so "move" the instruction address accordingly. | |
6668 | ||
6669 | Also, it doesn't seem appropriate for the assembler to reorder .loc | |
6670 | entries. If this instruction is a branch that we are going to swap | |
6671 | with the previous instruction, the two instructions should be | |
6672 | treated as a unit, and the debug information for both instructions | |
6673 | should refer to the start of the branch sequence. Using the | |
6674 | current position is certainly wrong when swapping a 32-bit branch | |
6675 | and a 16-bit delay slot, since the current position would then be | |
6676 | in the middle of a branch. */ | |
6677 | dwarf2_move_insn ((HAVE_CODE_COMPRESSION ? 1 : 0) - branch_disp); | |
58e2ea4d | 6678 | |
df58fc94 RS |
6679 | relax32 = (mips_relax_branch |
6680 | /* Don't try branch relaxation within .set nomacro, or within | |
6681 | .set noat if we use $at for PIC computations. If it turns | |
6682 | out that the branch was out-of-range, we'll get an error. */ | |
6683 | && !mips_opts.warn_about_macros | |
6684 | && (mips_opts.at || mips_pic == NO_PIC) | |
3bf0dbfb MR |
6685 | /* Don't relax BPOSGE32/64 or BC1ANY2T/F and BC1ANY4T/F |
6686 | as they have no complementing branches. */ | |
6687 | && !(ip->insn_mo->ase & (ASE_MIPS3D | ASE_DSP64 | ASE_DSP))); | |
df58fc94 RS |
6688 | |
6689 | if (!HAVE_CODE_COMPRESSION | |
6690 | && address_expr | |
6691 | && relax32 | |
0b25d3e6 | 6692 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
11625dd8 | 6693 | && delayed_branch_p (ip)) |
4a6a3df4 | 6694 | { |
895921c9 | 6695 | relaxed_branch = TRUE; |
1e915849 RS |
6696 | add_relaxed_insn (ip, (relaxed_branch_length |
6697 | (NULL, NULL, | |
11625dd8 RS |
6698 | uncond_branch_p (ip) ? -1 |
6699 | : branch_likely_p (ip) ? 1 | |
1e915849 RS |
6700 | : 0)), 4, |
6701 | RELAX_BRANCH_ENCODE | |
66b3e8da | 6702 | (AT, |
11625dd8 RS |
6703 | uncond_branch_p (ip), |
6704 | branch_likely_p (ip), | |
1e915849 RS |
6705 | pinfo & INSN_WRITE_GPR_31, |
6706 | 0), | |
6707 | address_expr->X_add_symbol, | |
6708 | address_expr->X_add_number); | |
4a6a3df4 AO |
6709 | *reloc_type = BFD_RELOC_UNUSED; |
6710 | } | |
df58fc94 RS |
6711 | else if (mips_opts.micromips |
6712 | && address_expr | |
6713 | && ((relax32 && *reloc_type == BFD_RELOC_16_PCREL_S2) | |
6714 | || *reloc_type > BFD_RELOC_UNUSED) | |
40209cad MR |
6715 | && (delayed_branch_p (ip) || compact_branch_p (ip)) |
6716 | /* Don't try branch relaxation when users specify | |
6717 | 16-bit/32-bit instructions. */ | |
6718 | && !forced_insn_length) | |
df58fc94 RS |
6719 | { |
6720 | bfd_boolean relax16 = *reloc_type > BFD_RELOC_UNUSED; | |
6721 | int type = relax16 ? *reloc_type - BFD_RELOC_UNUSED : 0; | |
11625dd8 RS |
6722 | int uncond = uncond_branch_p (ip) ? -1 : 0; |
6723 | int compact = compact_branch_p (ip); | |
df58fc94 RS |
6724 | int al = pinfo & INSN_WRITE_GPR_31; |
6725 | int length32; | |
6726 | ||
6727 | gas_assert (address_expr != NULL); | |
6728 | gas_assert (!mips_relax.sequence); | |
6729 | ||
2b0c8b40 | 6730 | relaxed_branch = TRUE; |
df58fc94 RS |
6731 | length32 = relaxed_micromips_32bit_branch_length (NULL, NULL, uncond); |
6732 | add_relaxed_insn (ip, relax32 ? length32 : 4, relax16 ? 2 : 4, | |
40209cad MR |
6733 | RELAX_MICROMIPS_ENCODE (type, AT, uncond, compact, al, |
6734 | relax32, 0, 0), | |
df58fc94 RS |
6735 | address_expr->X_add_symbol, |
6736 | address_expr->X_add_number); | |
6737 | *reloc_type = BFD_RELOC_UNUSED; | |
6738 | } | |
6739 | else if (mips_opts.mips16 && *reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
6740 | { |
6741 | /* We need to set up a variant frag. */ | |
df58fc94 | 6742 | gas_assert (address_expr != NULL); |
1e915849 RS |
6743 | add_relaxed_insn (ip, 4, 0, |
6744 | RELAX_MIPS16_ENCODE | |
6745 | (*reloc_type - BFD_RELOC_UNUSED, | |
df58fc94 | 6746 | forced_insn_length == 2, forced_insn_length == 4, |
11625dd8 | 6747 | delayed_branch_p (&history[0]), |
1e915849 RS |
6748 | history[0].mips16_absolute_jump_p), |
6749 | make_expr_symbol (address_expr), 0); | |
252b5132 | 6750 | } |
5c04167a | 6751 | else if (mips_opts.mips16 && insn_length (ip) == 2) |
9497f5ac | 6752 | { |
11625dd8 | 6753 | if (!delayed_branch_p (ip)) |
b8ee1a6e DU |
6754 | /* Make sure there is enough room to swap this instruction with |
6755 | a following jump instruction. */ | |
6756 | frag_grow (6); | |
1e915849 | 6757 | add_fixed_insn (ip); |
252b5132 RH |
6758 | } |
6759 | else | |
6760 | { | |
6761 | if (mips_opts.mips16 | |
6762 | && mips_opts.noreorder | |
11625dd8 | 6763 | && delayed_branch_p (&history[0])) |
252b5132 RH |
6764 | as_warn (_("extended instruction in delay slot")); |
6765 | ||
4d7206a2 RS |
6766 | if (mips_relax.sequence) |
6767 | { | |
6768 | /* If we've reached the end of this frag, turn it into a variant | |
6769 | frag and record the information for the instructions we've | |
6770 | written so far. */ | |
6771 | if (frag_room () < 4) | |
6772 | relax_close_frag (); | |
df58fc94 | 6773 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (ip); |
4d7206a2 RS |
6774 | } |
6775 | ||
584892a6 | 6776 | if (mips_relax.sequence != 2) |
df58fc94 RS |
6777 | { |
6778 | if (mips_macro_warning.first_insn_sizes[0] == 0) | |
6779 | mips_macro_warning.first_insn_sizes[0] = insn_length (ip); | |
6780 | mips_macro_warning.sizes[0] += insn_length (ip); | |
6781 | mips_macro_warning.insns[0]++; | |
6782 | } | |
584892a6 | 6783 | if (mips_relax.sequence != 1) |
df58fc94 RS |
6784 | { |
6785 | if (mips_macro_warning.first_insn_sizes[1] == 0) | |
6786 | mips_macro_warning.first_insn_sizes[1] = insn_length (ip); | |
6787 | mips_macro_warning.sizes[1] += insn_length (ip); | |
6788 | mips_macro_warning.insns[1]++; | |
6789 | } | |
584892a6 | 6790 | |
1e915849 RS |
6791 | if (mips_opts.mips16) |
6792 | { | |
6793 | ip->fixed_p = 1; | |
6794 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
6795 | } | |
6796 | add_fixed_insn (ip); | |
252b5132 RH |
6797 | } |
6798 | ||
9fe77896 | 6799 | if (!ip->complete_p && *reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 6800 | { |
df58fc94 | 6801 | bfd_reloc_code_real_type final_type[3]; |
2309ddf2 | 6802 | reloc_howto_type *howto0; |
9fe77896 RS |
6803 | reloc_howto_type *howto; |
6804 | int i; | |
34ce925e | 6805 | |
df58fc94 RS |
6806 | /* Perform any necessary conversion to microMIPS relocations |
6807 | and find out how many relocations there actually are. */ | |
6808 | for (i = 0; i < 3 && reloc_type[i] != BFD_RELOC_UNUSED; i++) | |
6809 | final_type[i] = micromips_map_reloc (reloc_type[i]); | |
6810 | ||
9fe77896 RS |
6811 | /* In a compound relocation, it is the final (outermost) |
6812 | operator that determines the relocated field. */ | |
2309ddf2 | 6813 | howto = howto0 = bfd_reloc_type_lookup (stdoutput, final_type[i - 1]); |
e8044f35 RS |
6814 | if (!howto) |
6815 | abort (); | |
2309ddf2 MR |
6816 | |
6817 | if (i > 1) | |
6818 | howto0 = bfd_reloc_type_lookup (stdoutput, final_type[0]); | |
9fe77896 RS |
6819 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
6820 | bfd_get_reloc_size (howto), | |
6821 | address_expr, | |
2309ddf2 MR |
6822 | howto0 && howto0->pc_relative, |
6823 | final_type[0]); | |
9fe77896 RS |
6824 | |
6825 | /* Tag symbols that have a R_MIPS16_26 relocation against them. */ | |
2309ddf2 | 6826 | if (final_type[0] == BFD_RELOC_MIPS16_JMP && ip->fixp[0]->fx_addsy) |
9fe77896 RS |
6827 | *symbol_get_tc (ip->fixp[0]->fx_addsy) = 1; |
6828 | ||
6829 | /* These relocations can have an addend that won't fit in | |
6830 | 4 octets for 64bit assembly. */ | |
6831 | if (HAVE_64BIT_GPRS | |
6832 | && ! howto->partial_inplace | |
6833 | && (reloc_type[0] == BFD_RELOC_16 | |
6834 | || reloc_type[0] == BFD_RELOC_32 | |
6835 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
6836 | || reloc_type[0] == BFD_RELOC_GPREL16 | |
6837 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
6838 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
6839 | || reloc_type[0] == BFD_RELOC_64 | |
6840 | || reloc_type[0] == BFD_RELOC_CTOR | |
6841 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
6842 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
6843 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
6844 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
6845 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
6846 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT | |
6847 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
6848 | || hi16_reloc_p (reloc_type[0]) | |
6849 | || lo16_reloc_p (reloc_type[0]))) | |
6850 | ip->fixp[0]->fx_no_overflow = 1; | |
6851 | ||
ddaf2c41 MR |
6852 | /* These relocations can have an addend that won't fit in 2 octets. */ |
6853 | if (reloc_type[0] == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
6854 | || reloc_type[0] == BFD_RELOC_MICROMIPS_10_PCREL_S1) | |
6855 | ip->fixp[0]->fx_no_overflow = 1; | |
6856 | ||
9fe77896 RS |
6857 | if (mips_relax.sequence) |
6858 | { | |
6859 | if (mips_relax.first_fixup == 0) | |
6860 | mips_relax.first_fixup = ip->fixp[0]; | |
6861 | } | |
6862 | else if (reloc_needs_lo_p (*reloc_type)) | |
6863 | { | |
6864 | struct mips_hi_fixup *hi_fixup; | |
6865 | ||
6866 | /* Reuse the last entry if it already has a matching %lo. */ | |
6867 | hi_fixup = mips_hi_fixup_list; | |
6868 | if (hi_fixup == 0 | |
6869 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
4d7206a2 | 6870 | { |
9fe77896 RS |
6871 | hi_fixup = ((struct mips_hi_fixup *) |
6872 | xmalloc (sizeof (struct mips_hi_fixup))); | |
6873 | hi_fixup->next = mips_hi_fixup_list; | |
6874 | mips_hi_fixup_list = hi_fixup; | |
4d7206a2 | 6875 | } |
9fe77896 RS |
6876 | hi_fixup->fixp = ip->fixp[0]; |
6877 | hi_fixup->seg = now_seg; | |
6878 | } | |
252b5132 | 6879 | |
9fe77896 RS |
6880 | /* Add fixups for the second and third relocations, if given. |
6881 | Note that the ABI allows the second relocation to be | |
6882 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
6883 | moment we only use RSS_UNDEF, but we could add support | |
6884 | for the others if it ever becomes necessary. */ | |
6885 | for (i = 1; i < 3; i++) | |
6886 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
6887 | { | |
6888 | ip->fixp[i] = fix_new (ip->frag, ip->where, | |
6889 | ip->fixp[0]->fx_size, NULL, 0, | |
df58fc94 | 6890 | FALSE, final_type[i]); |
f6688943 | 6891 | |
9fe77896 RS |
6892 | /* Use fx_tcbit to mark compound relocs. */ |
6893 | ip->fixp[0]->fx_tcbit = 1; | |
6894 | ip->fixp[i]->fx_tcbit = 1; | |
6895 | } | |
252b5132 | 6896 | } |
1e915849 | 6897 | install_insn (ip); |
252b5132 RH |
6898 | |
6899 | /* Update the register mask information. */ | |
4c260379 RS |
6900 | mips_gprmask |= gpr_read_mask (ip) | gpr_write_mask (ip); |
6901 | mips_cprmask[1] |= fpr_read_mask (ip) | fpr_write_mask (ip); | |
252b5132 | 6902 | |
a4e06468 | 6903 | switch (method) |
252b5132 | 6904 | { |
a4e06468 RS |
6905 | case APPEND_ADD: |
6906 | insert_into_history (0, 1, ip); | |
6907 | break; | |
6908 | ||
6909 | case APPEND_ADD_WITH_NOP: | |
14fe068b RS |
6910 | { |
6911 | struct mips_cl_insn *nop; | |
6912 | ||
6913 | insert_into_history (0, 1, ip); | |
6914 | nop = get_delay_slot_nop (ip); | |
6915 | add_fixed_insn (nop); | |
6916 | insert_into_history (0, 1, nop); | |
6917 | if (mips_relax.sequence) | |
6918 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (nop); | |
6919 | } | |
a4e06468 RS |
6920 | break; |
6921 | ||
6922 | case APPEND_ADD_COMPACT: | |
6923 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
6924 | gas_assert (mips_opts.mips16); | |
6925 | ip->insn_opcode |= 0x0080; | |
6926 | find_altered_mips16_opcode (ip); | |
6927 | install_insn (ip); | |
6928 | insert_into_history (0, 1, ip); | |
6929 | break; | |
6930 | ||
6931 | case APPEND_SWAP: | |
6932 | { | |
6933 | struct mips_cl_insn delay = history[0]; | |
6934 | if (mips_opts.mips16) | |
6935 | { | |
6936 | know (delay.frag == ip->frag); | |
6937 | move_insn (ip, delay.frag, delay.where); | |
6938 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
6939 | } | |
464ab0e5 | 6940 | else if (relaxed_branch || delay.frag != ip->frag) |
a4e06468 RS |
6941 | { |
6942 | /* Add the delay slot instruction to the end of the | |
6943 | current frag and shrink the fixed part of the | |
6944 | original frag. If the branch occupies the tail of | |
6945 | the latter, move it backwards to cover the gap. */ | |
2b0c8b40 | 6946 | delay.frag->fr_fix -= branch_disp; |
a4e06468 | 6947 | if (delay.frag == ip->frag) |
2b0c8b40 | 6948 | move_insn (ip, ip->frag, ip->where - branch_disp); |
a4e06468 RS |
6949 | add_fixed_insn (&delay); |
6950 | } | |
6951 | else | |
6952 | { | |
2b0c8b40 MR |
6953 | move_insn (&delay, ip->frag, |
6954 | ip->where - branch_disp + insn_length (ip)); | |
a4e06468 RS |
6955 | move_insn (ip, history[0].frag, history[0].where); |
6956 | } | |
6957 | history[0] = *ip; | |
6958 | delay.fixed_p = 1; | |
6959 | insert_into_history (0, 1, &delay); | |
6960 | } | |
6961 | break; | |
252b5132 RH |
6962 | } |
6963 | ||
13408f1e | 6964 | /* If we have just completed an unconditional branch, clear the history. */ |
11625dd8 RS |
6965 | if ((delayed_branch_p (&history[1]) && uncond_branch_p (&history[1])) |
6966 | || (compact_branch_p (&history[0]) && uncond_branch_p (&history[0]))) | |
e407c74b NC |
6967 | { |
6968 | unsigned int i; | |
6969 | ||
79850f26 | 6970 | mips_no_prev_insn (); |
13408f1e | 6971 | |
e407c74b | 6972 | for (i = 0; i < ARRAY_SIZE (history); i++) |
79850f26 | 6973 | history[i].cleared_p = 1; |
e407c74b NC |
6974 | } |
6975 | ||
df58fc94 RS |
6976 | /* We need to emit a label at the end of branch-likely macros. */ |
6977 | if (emit_branch_likely_macro) | |
6978 | { | |
6979 | emit_branch_likely_macro = FALSE; | |
6980 | micromips_add_label (); | |
6981 | } | |
6982 | ||
252b5132 RH |
6983 | /* We just output an insn, so the next one doesn't have a label. */ |
6984 | mips_clear_insn_labels (); | |
252b5132 RH |
6985 | } |
6986 | ||
e407c74b NC |
6987 | /* Forget that there was any previous instruction or label. |
6988 | When BRANCH is true, the branch history is also flushed. */ | |
252b5132 RH |
6989 | |
6990 | static void | |
7d10b47d | 6991 | mips_no_prev_insn (void) |
252b5132 | 6992 | { |
7d10b47d RS |
6993 | prev_nop_frag = NULL; |
6994 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
6995 | mips_clear_insn_labels (); |
6996 | } | |
6997 | ||
7d10b47d RS |
6998 | /* This function must be called before we emit something other than |
6999 | instructions. It is like mips_no_prev_insn except that it inserts | |
7000 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 7001 | |
7d10b47d RS |
7002 | void |
7003 | mips_emit_delays (void) | |
252b5132 RH |
7004 | { |
7005 | if (! mips_opts.noreorder) | |
7006 | { | |
932d1a1b | 7007 | int nops = nops_for_insn (0, history, NULL); |
252b5132 RH |
7008 | if (nops > 0) |
7009 | { | |
7d10b47d RS |
7010 | while (nops-- > 0) |
7011 | add_fixed_insn (NOP_INSN); | |
462427c4 | 7012 | mips_move_text_labels (); |
7d10b47d RS |
7013 | } |
7014 | } | |
7015 | mips_no_prev_insn (); | |
7016 | } | |
7017 | ||
7018 | /* Start a (possibly nested) noreorder block. */ | |
7019 | ||
7020 | static void | |
7021 | start_noreorder (void) | |
7022 | { | |
7023 | if (mips_opts.noreorder == 0) | |
7024 | { | |
7025 | unsigned int i; | |
7026 | int nops; | |
7027 | ||
7028 | /* None of the instructions before the .set noreorder can be moved. */ | |
7029 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
7030 | history[i].fixed_p = 1; | |
7031 | ||
7032 | /* Insert any nops that might be needed between the .set noreorder | |
7033 | block and the previous instructions. We will later remove any | |
7034 | nops that turn out not to be needed. */ | |
932d1a1b | 7035 | nops = nops_for_insn (0, history, NULL); |
7d10b47d RS |
7036 | if (nops > 0) |
7037 | { | |
7038 | if (mips_optimize != 0) | |
252b5132 RH |
7039 | { |
7040 | /* Record the frag which holds the nop instructions, so | |
7041 | that we can remove them if we don't need them. */ | |
df58fc94 | 7042 | frag_grow (nops * NOP_INSN_SIZE); |
252b5132 RH |
7043 | prev_nop_frag = frag_now; |
7044 | prev_nop_frag_holds = nops; | |
7045 | prev_nop_frag_required = 0; | |
7046 | prev_nop_frag_since = 0; | |
7047 | } | |
7048 | ||
7049 | for (; nops > 0; --nops) | |
1e915849 | 7050 | add_fixed_insn (NOP_INSN); |
252b5132 | 7051 | |
7d10b47d RS |
7052 | /* Move on to a new frag, so that it is safe to simply |
7053 | decrease the size of prev_nop_frag. */ | |
7054 | frag_wane (frag_now); | |
7055 | frag_new (0); | |
462427c4 | 7056 | mips_move_text_labels (); |
252b5132 | 7057 | } |
df58fc94 | 7058 | mips_mark_labels (); |
7d10b47d | 7059 | mips_clear_insn_labels (); |
252b5132 | 7060 | } |
7d10b47d RS |
7061 | mips_opts.noreorder++; |
7062 | mips_any_noreorder = 1; | |
7063 | } | |
252b5132 | 7064 | |
7d10b47d | 7065 | /* End a nested noreorder block. */ |
252b5132 | 7066 | |
7d10b47d RS |
7067 | static void |
7068 | end_noreorder (void) | |
7069 | { | |
7070 | mips_opts.noreorder--; | |
7071 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
7072 | { | |
7073 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
7074 | handling nop insertion the .set reorder way. */ | |
7075 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
df58fc94 | 7076 | * NOP_INSN_SIZE); |
7d10b47d RS |
7077 | insert_into_history (prev_nop_frag_since, |
7078 | prev_nop_frag_required, NOP_INSN); | |
7079 | prev_nop_frag = NULL; | |
7080 | } | |
252b5132 RH |
7081 | } |
7082 | ||
97d87491 RS |
7083 | /* Sign-extend 32-bit mode constants that have bit 31 set and all |
7084 | higher bits unset. */ | |
7085 | ||
7086 | static void | |
7087 | normalize_constant_expr (expressionS *ex) | |
7088 | { | |
7089 | if (ex->X_op == O_constant | |
7090 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
7091 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
7092 | - 0x80000000); | |
7093 | } | |
7094 | ||
7095 | /* Sign-extend 32-bit mode address offsets that have bit 31 set and | |
7096 | all higher bits unset. */ | |
7097 | ||
7098 | static void | |
7099 | normalize_address_expr (expressionS *ex) | |
7100 | { | |
7101 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
7102 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
7103 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
7104 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
7105 | - 0x80000000); | |
7106 | } | |
7107 | ||
7108 | /* Try to match TOKENS against OPCODE, storing the result in INSN. | |
7109 | Return true if the match was successful. | |
7110 | ||
7111 | OPCODE_EXTRA is a value that should be ORed into the opcode | |
7112 | (used for VU0 channel suffixes, etc.). MORE_ALTS is true if | |
7113 | there are more alternatives after OPCODE and SOFT_MATCH is | |
7114 | as for mips_arg_info. */ | |
7115 | ||
7116 | static bfd_boolean | |
7117 | match_insn (struct mips_cl_insn *insn, const struct mips_opcode *opcode, | |
7118 | struct mips_operand_token *tokens, unsigned int opcode_extra, | |
60f20e8b | 7119 | bfd_boolean lax_match, bfd_boolean complete_p) |
97d87491 RS |
7120 | { |
7121 | const char *args; | |
7122 | struct mips_arg_info arg; | |
7123 | const struct mips_operand *operand; | |
7124 | char c; | |
7125 | ||
7126 | imm_expr.X_op = O_absent; | |
97d87491 RS |
7127 | offset_expr.X_op = O_absent; |
7128 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
7129 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
7130 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
7131 | ||
7132 | create_insn (insn, opcode); | |
60f20e8b RS |
7133 | /* When no opcode suffix is specified, assume ".xyzw". */ |
7134 | if ((opcode->pinfo2 & INSN2_VU0_CHANNEL_SUFFIX) != 0 && opcode_extra == 0) | |
7135 | insn->insn_opcode |= 0xf << mips_vu0_channel_mask.lsb; | |
7136 | else | |
7137 | insn->insn_opcode |= opcode_extra; | |
97d87491 RS |
7138 | memset (&arg, 0, sizeof (arg)); |
7139 | arg.insn = insn; | |
7140 | arg.token = tokens; | |
7141 | arg.argnum = 1; | |
7142 | arg.last_regno = ILLEGAL_REG; | |
7143 | arg.dest_regno = ILLEGAL_REG; | |
60f20e8b | 7144 | arg.lax_match = lax_match; |
97d87491 RS |
7145 | for (args = opcode->args;; ++args) |
7146 | { | |
7147 | if (arg.token->type == OT_END) | |
7148 | { | |
7149 | /* Handle unary instructions in which only one operand is given. | |
7150 | The source is then the same as the destination. */ | |
7151 | if (arg.opnum == 1 && *args == ',') | |
7152 | { | |
7153 | operand = (mips_opts.micromips | |
7154 | ? decode_micromips_operand (args + 1) | |
7155 | : decode_mips_operand (args + 1)); | |
7156 | if (operand && mips_optional_operand_p (operand)) | |
7157 | { | |
7158 | arg.token = tokens; | |
7159 | arg.argnum = 1; | |
7160 | continue; | |
7161 | } | |
7162 | } | |
7163 | ||
7164 | /* Treat elided base registers as $0. */ | |
7165 | if (strcmp (args, "(b)") == 0) | |
7166 | args += 3; | |
7167 | ||
7168 | if (args[0] == '+') | |
7169 | switch (args[1]) | |
7170 | { | |
7171 | case 'K': | |
7172 | case 'N': | |
7173 | /* The register suffix is optional. */ | |
7174 | args += 2; | |
7175 | break; | |
7176 | } | |
7177 | ||
7178 | /* Fail the match if there were too few operands. */ | |
7179 | if (*args) | |
7180 | return FALSE; | |
7181 | ||
7182 | /* Successful match. */ | |
60f20e8b RS |
7183 | if (!complete_p) |
7184 | return TRUE; | |
e3de51ce | 7185 | clear_insn_error (); |
97d87491 RS |
7186 | if (arg.dest_regno == arg.last_regno |
7187 | && strncmp (insn->insn_mo->name, "jalr", 4) == 0) | |
7188 | { | |
7189 | if (arg.opnum == 2) | |
e3de51ce | 7190 | set_insn_error |
1661c76c | 7191 | (0, _("source and destination must be different")); |
97d87491 | 7192 | else if (arg.last_regno == 31) |
e3de51ce | 7193 | set_insn_error |
1661c76c | 7194 | (0, _("a destination register must be supplied")); |
97d87491 | 7195 | } |
173d3447 CF |
7196 | else if (arg.last_regno == 31 |
7197 | && (strncmp (insn->insn_mo->name, "bltzal", 6) == 0 | |
7198 | || strncmp (insn->insn_mo->name, "bgezal", 6) == 0)) | |
7199 | set_insn_error (0, _("the source register must not be $31")); | |
97d87491 RS |
7200 | check_completed_insn (&arg); |
7201 | return TRUE; | |
7202 | } | |
7203 | ||
7204 | /* Fail the match if the line has too many operands. */ | |
7205 | if (*args == 0) | |
7206 | return FALSE; | |
7207 | ||
7208 | /* Handle characters that need to match exactly. */ | |
7209 | if (*args == '(' || *args == ')' || *args == ',') | |
7210 | { | |
7211 | if (match_char (&arg, *args)) | |
7212 | continue; | |
7213 | return FALSE; | |
7214 | } | |
7215 | if (*args == '#') | |
7216 | { | |
7217 | ++args; | |
7218 | if (arg.token->type == OT_DOUBLE_CHAR | |
7219 | && arg.token->u.ch == *args) | |
7220 | { | |
7221 | ++arg.token; | |
7222 | continue; | |
7223 | } | |
7224 | return FALSE; | |
7225 | } | |
7226 | ||
7227 | /* Handle special macro operands. Work out the properties of | |
7228 | other operands. */ | |
7229 | arg.opnum += 1; | |
97d87491 RS |
7230 | switch (*args) |
7231 | { | |
7232 | case '+': | |
7233 | switch (args[1]) | |
7234 | { | |
97d87491 RS |
7235 | case 'i': |
7236 | *offset_reloc = BFD_RELOC_MIPS_JMP; | |
7237 | break; | |
7238 | } | |
7239 | break; | |
7240 | ||
97d87491 | 7241 | case 'I': |
1a00e612 RS |
7242 | if (!match_const_int (&arg, &imm_expr.X_add_number)) |
7243 | return FALSE; | |
7244 | imm_expr.X_op = O_constant; | |
97d87491 RS |
7245 | if (HAVE_32BIT_GPRS) |
7246 | normalize_constant_expr (&imm_expr); | |
7247 | continue; | |
7248 | ||
7249 | case 'A': | |
7250 | if (arg.token->type == OT_CHAR && arg.token->u.ch == '(') | |
7251 | { | |
7252 | /* Assume that the offset has been elided and that what | |
7253 | we saw was a base register. The match will fail later | |
7254 | if that assumption turns out to be wrong. */ | |
7255 | offset_expr.X_op = O_constant; | |
7256 | offset_expr.X_add_number = 0; | |
7257 | } | |
97d87491 | 7258 | else |
1a00e612 RS |
7259 | { |
7260 | if (!match_expression (&arg, &offset_expr, offset_reloc)) | |
7261 | return FALSE; | |
7262 | normalize_address_expr (&offset_expr); | |
7263 | } | |
97d87491 RS |
7264 | continue; |
7265 | ||
7266 | case 'F': | |
7267 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7268 | 8, TRUE)) | |
1a00e612 | 7269 | return FALSE; |
97d87491 RS |
7270 | continue; |
7271 | ||
7272 | case 'L': | |
7273 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7274 | 8, FALSE)) | |
1a00e612 | 7275 | return FALSE; |
97d87491 RS |
7276 | continue; |
7277 | ||
7278 | case 'f': | |
7279 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7280 | 4, TRUE)) | |
1a00e612 | 7281 | return FALSE; |
97d87491 RS |
7282 | continue; |
7283 | ||
7284 | case 'l': | |
7285 | if (!match_float_constant (&arg, &imm_expr, &offset_expr, | |
7286 | 4, FALSE)) | |
1a00e612 | 7287 | return FALSE; |
97d87491 RS |
7288 | continue; |
7289 | ||
97d87491 RS |
7290 | case 'p': |
7291 | *offset_reloc = BFD_RELOC_16_PCREL_S2; | |
7292 | break; | |
7293 | ||
7294 | case 'a': | |
7295 | *offset_reloc = BFD_RELOC_MIPS_JMP; | |
7296 | break; | |
7297 | ||
7298 | case 'm': | |
7299 | gas_assert (mips_opts.micromips); | |
7300 | c = args[1]; | |
7301 | switch (c) | |
7302 | { | |
7303 | case 'D': | |
7304 | case 'E': | |
7305 | if (!forced_insn_length) | |
7306 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; | |
7307 | else if (c == 'D') | |
7308 | *offset_reloc = BFD_RELOC_MICROMIPS_10_PCREL_S1; | |
7309 | else | |
7310 | *offset_reloc = BFD_RELOC_MICROMIPS_7_PCREL_S1; | |
7311 | break; | |
7312 | } | |
7313 | break; | |
7314 | } | |
7315 | ||
7316 | operand = (mips_opts.micromips | |
7317 | ? decode_micromips_operand (args) | |
7318 | : decode_mips_operand (args)); | |
7319 | if (!operand) | |
7320 | abort (); | |
7321 | ||
7322 | /* Skip prefixes. */ | |
7323 | if (*args == '+' || *args == 'm') | |
7324 | args++; | |
7325 | ||
7326 | if (mips_optional_operand_p (operand) | |
7327 | && args[1] == ',' | |
7328 | && (arg.token[0].type != OT_REG | |
7329 | || arg.token[1].type == OT_END)) | |
7330 | { | |
7331 | /* Assume that the register has been elided and is the | |
7332 | same as the first operand. */ | |
7333 | arg.token = tokens; | |
7334 | arg.argnum = 1; | |
7335 | } | |
7336 | ||
7337 | if (!match_operand (&arg, operand)) | |
7338 | return FALSE; | |
7339 | } | |
7340 | } | |
7341 | ||
7342 | /* Like match_insn, but for MIPS16. */ | |
7343 | ||
7344 | static bfd_boolean | |
7345 | match_mips16_insn (struct mips_cl_insn *insn, const struct mips_opcode *opcode, | |
1a00e612 | 7346 | struct mips_operand_token *tokens) |
97d87491 RS |
7347 | { |
7348 | const char *args; | |
7349 | const struct mips_operand *operand; | |
7350 | const struct mips_operand *ext_operand; | |
7351 | struct mips_arg_info arg; | |
7352 | int relax_char; | |
7353 | ||
7354 | create_insn (insn, opcode); | |
7355 | imm_expr.X_op = O_absent; | |
97d87491 RS |
7356 | offset_expr.X_op = O_absent; |
7357 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
7358 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
7359 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
7360 | relax_char = 0; | |
7361 | ||
7362 | memset (&arg, 0, sizeof (arg)); | |
7363 | arg.insn = insn; | |
7364 | arg.token = tokens; | |
7365 | arg.argnum = 1; | |
7366 | arg.last_regno = ILLEGAL_REG; | |
7367 | arg.dest_regno = ILLEGAL_REG; | |
97d87491 RS |
7368 | relax_char = 0; |
7369 | for (args = opcode->args;; ++args) | |
7370 | { | |
7371 | int c; | |
7372 | ||
7373 | if (arg.token->type == OT_END) | |
7374 | { | |
7375 | offsetT value; | |
7376 | ||
7377 | /* Handle unary instructions in which only one operand is given. | |
7378 | The source is then the same as the destination. */ | |
7379 | if (arg.opnum == 1 && *args == ',') | |
7380 | { | |
7381 | operand = decode_mips16_operand (args[1], FALSE); | |
7382 | if (operand && mips_optional_operand_p (operand)) | |
7383 | { | |
7384 | arg.token = tokens; | |
7385 | arg.argnum = 1; | |
7386 | continue; | |
7387 | } | |
7388 | } | |
7389 | ||
7390 | /* Fail the match if there were too few operands. */ | |
7391 | if (*args) | |
7392 | return FALSE; | |
7393 | ||
7394 | /* Successful match. Stuff the immediate value in now, if | |
7395 | we can. */ | |
e3de51ce | 7396 | clear_insn_error (); |
97d87491 RS |
7397 | if (opcode->pinfo == INSN_MACRO) |
7398 | { | |
7399 | gas_assert (relax_char == 0 || relax_char == 'p'); | |
7400 | gas_assert (*offset_reloc == BFD_RELOC_UNUSED); | |
7401 | } | |
7402 | else if (relax_char | |
7403 | && offset_expr.X_op == O_constant | |
7404 | && calculate_reloc (*offset_reloc, | |
7405 | offset_expr.X_add_number, | |
7406 | &value)) | |
7407 | { | |
7408 | mips16_immed (NULL, 0, relax_char, *offset_reloc, value, | |
7409 | forced_insn_length, &insn->insn_opcode); | |
7410 | offset_expr.X_op = O_absent; | |
7411 | *offset_reloc = BFD_RELOC_UNUSED; | |
7412 | } | |
7413 | else if (relax_char && *offset_reloc != BFD_RELOC_UNUSED) | |
7414 | { | |
7415 | if (forced_insn_length == 2) | |
e3de51ce | 7416 | set_insn_error (0, _("invalid unextended operand value")); |
97d87491 RS |
7417 | forced_insn_length = 4; |
7418 | insn->insn_opcode |= MIPS16_EXTEND; | |
7419 | } | |
7420 | else if (relax_char) | |
7421 | *offset_reloc = (int) BFD_RELOC_UNUSED + relax_char; | |
7422 | ||
7423 | check_completed_insn (&arg); | |
7424 | return TRUE; | |
7425 | } | |
7426 | ||
7427 | /* Fail the match if the line has too many operands. */ | |
7428 | if (*args == 0) | |
7429 | return FALSE; | |
7430 | ||
7431 | /* Handle characters that need to match exactly. */ | |
7432 | if (*args == '(' || *args == ')' || *args == ',') | |
7433 | { | |
7434 | if (match_char (&arg, *args)) | |
7435 | continue; | |
7436 | return FALSE; | |
7437 | } | |
7438 | ||
7439 | arg.opnum += 1; | |
7440 | c = *args; | |
7441 | switch (c) | |
7442 | { | |
7443 | case 'p': | |
7444 | case 'q': | |
7445 | case 'A': | |
7446 | case 'B': | |
7447 | case 'E': | |
7448 | relax_char = c; | |
7449 | break; | |
7450 | ||
7451 | case 'I': | |
1a00e612 RS |
7452 | if (!match_const_int (&arg, &imm_expr.X_add_number)) |
7453 | return FALSE; | |
7454 | imm_expr.X_op = O_constant; | |
97d87491 RS |
7455 | if (HAVE_32BIT_GPRS) |
7456 | normalize_constant_expr (&imm_expr); | |
7457 | continue; | |
7458 | ||
7459 | case 'a': | |
7460 | case 'i': | |
7461 | *offset_reloc = BFD_RELOC_MIPS16_JMP; | |
7462 | insn->insn_opcode <<= 16; | |
7463 | break; | |
7464 | } | |
7465 | ||
7466 | operand = decode_mips16_operand (c, FALSE); | |
7467 | if (!operand) | |
7468 | abort (); | |
7469 | ||
7470 | /* '6' is a special case. It is used for BREAK and SDBBP, | |
7471 | whose operands are only meaningful to the software that decodes | |
7472 | them. This means that there is no architectural reason why | |
7473 | they cannot be prefixed by EXTEND, but in practice, | |
7474 | exception handlers will only look at the instruction | |
7475 | itself. We therefore allow '6' to be extended when | |
7476 | disassembling but not when assembling. */ | |
7477 | if (operand->type != OP_PCREL && c != '6') | |
7478 | { | |
7479 | ext_operand = decode_mips16_operand (c, TRUE); | |
7480 | if (operand != ext_operand) | |
7481 | { | |
7482 | if (arg.token->type == OT_CHAR && arg.token->u.ch == '(') | |
7483 | { | |
7484 | offset_expr.X_op = O_constant; | |
7485 | offset_expr.X_add_number = 0; | |
7486 | relax_char = c; | |
7487 | continue; | |
7488 | } | |
7489 | ||
7490 | /* We need the OT_INTEGER check because some MIPS16 | |
7491 | immediate variants are listed before the register ones. */ | |
7492 | if (arg.token->type != OT_INTEGER | |
7493 | || !match_expression (&arg, &offset_expr, offset_reloc)) | |
7494 | return FALSE; | |
7495 | ||
7496 | /* '8' is used for SLTI(U) and has traditionally not | |
7497 | been allowed to take relocation operators. */ | |
7498 | if (offset_reloc[0] != BFD_RELOC_UNUSED | |
7499 | && (ext_operand->size != 16 || c == '8')) | |
7500 | return FALSE; | |
7501 | ||
7502 | relax_char = c; | |
7503 | continue; | |
7504 | } | |
7505 | } | |
7506 | ||
7507 | if (mips_optional_operand_p (operand) | |
7508 | && args[1] == ',' | |
7509 | && (arg.token[0].type != OT_REG | |
7510 | || arg.token[1].type == OT_END)) | |
7511 | { | |
7512 | /* Assume that the register has been elided and is the | |
7513 | same as the first operand. */ | |
7514 | arg.token = tokens; | |
7515 | arg.argnum = 1; | |
7516 | } | |
7517 | ||
7518 | if (!match_operand (&arg, operand)) | |
7519 | return FALSE; | |
7520 | } | |
7521 | } | |
7522 | ||
60f20e8b RS |
7523 | /* Record that the current instruction is invalid for the current ISA. */ |
7524 | ||
7525 | static void | |
7526 | match_invalid_for_isa (void) | |
7527 | { | |
7528 | set_insn_error_ss | |
1661c76c | 7529 | (0, _("opcode not supported on this processor: %s (%s)"), |
60f20e8b RS |
7530 | mips_cpu_info_from_arch (mips_opts.arch)->name, |
7531 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
7532 | } | |
7533 | ||
7534 | /* Try to match TOKENS against a series of opcode entries, starting at FIRST. | |
7535 | Return true if a definite match or failure was found, storing any match | |
7536 | in INSN. OPCODE_EXTRA is a value that should be ORed into the opcode | |
7537 | (to handle things like VU0 suffixes). LAX_MATCH is true if we have already | |
7538 | tried and failed to match under normal conditions and now want to try a | |
7539 | more relaxed match. */ | |
7540 | ||
7541 | static bfd_boolean | |
7542 | match_insns (struct mips_cl_insn *insn, const struct mips_opcode *first, | |
7543 | const struct mips_opcode *past, struct mips_operand_token *tokens, | |
7544 | int opcode_extra, bfd_boolean lax_match) | |
7545 | { | |
7546 | const struct mips_opcode *opcode; | |
7547 | const struct mips_opcode *invalid_delay_slot; | |
7548 | bfd_boolean seen_valid_for_isa, seen_valid_for_size; | |
7549 | ||
7550 | /* Search for a match, ignoring alternatives that don't satisfy the | |
7551 | current ISA or forced_length. */ | |
7552 | invalid_delay_slot = 0; | |
7553 | seen_valid_for_isa = FALSE; | |
7554 | seen_valid_for_size = FALSE; | |
7555 | opcode = first; | |
7556 | do | |
7557 | { | |
7558 | gas_assert (strcmp (opcode->name, first->name) == 0); | |
7559 | if (is_opcode_valid (opcode)) | |
7560 | { | |
7561 | seen_valid_for_isa = TRUE; | |
7562 | if (is_size_valid (opcode)) | |
7563 | { | |
7564 | bfd_boolean delay_slot_ok; | |
7565 | ||
7566 | seen_valid_for_size = TRUE; | |
7567 | delay_slot_ok = is_delay_slot_valid (opcode); | |
7568 | if (match_insn (insn, opcode, tokens, opcode_extra, | |
7569 | lax_match, delay_slot_ok)) | |
7570 | { | |
7571 | if (!delay_slot_ok) | |
7572 | { | |
7573 | if (!invalid_delay_slot) | |
7574 | invalid_delay_slot = opcode; | |
7575 | } | |
7576 | else | |
7577 | return TRUE; | |
7578 | } | |
7579 | } | |
7580 | } | |
7581 | ++opcode; | |
7582 | } | |
7583 | while (opcode < past && strcmp (opcode->name, first->name) == 0); | |
7584 | ||
7585 | /* If the only matches we found had the wrong length for the delay slot, | |
7586 | pick the first such match. We'll issue an appropriate warning later. */ | |
7587 | if (invalid_delay_slot) | |
7588 | { | |
7589 | if (match_insn (insn, invalid_delay_slot, tokens, opcode_extra, | |
7590 | lax_match, TRUE)) | |
7591 | return TRUE; | |
7592 | abort (); | |
7593 | } | |
7594 | ||
7595 | /* Handle the case where we didn't try to match an instruction because | |
7596 | all the alternatives were incompatible with the current ISA. */ | |
7597 | if (!seen_valid_for_isa) | |
7598 | { | |
7599 | match_invalid_for_isa (); | |
7600 | return TRUE; | |
7601 | } | |
7602 | ||
7603 | /* Handle the case where we didn't try to match an instruction because | |
7604 | all the alternatives were of the wrong size. */ | |
7605 | if (!seen_valid_for_size) | |
7606 | { | |
7607 | if (mips_opts.insn32) | |
1661c76c | 7608 | set_insn_error (0, _("opcode not supported in the `insn32' mode")); |
60f20e8b RS |
7609 | else |
7610 | set_insn_error_i | |
1661c76c | 7611 | (0, _("unrecognized %d-bit version of microMIPS opcode"), |
60f20e8b RS |
7612 | 8 * forced_insn_length); |
7613 | return TRUE; | |
7614 | } | |
7615 | ||
7616 | return FALSE; | |
7617 | } | |
7618 | ||
7619 | /* Like match_insns, but for MIPS16. */ | |
7620 | ||
7621 | static bfd_boolean | |
7622 | match_mips16_insns (struct mips_cl_insn *insn, const struct mips_opcode *first, | |
7623 | struct mips_operand_token *tokens) | |
7624 | { | |
7625 | const struct mips_opcode *opcode; | |
7626 | bfd_boolean seen_valid_for_isa; | |
7627 | ||
7628 | /* Search for a match, ignoring alternatives that don't satisfy the | |
7629 | current ISA. There are no separate entries for extended forms so | |
7630 | we deal with forced_length later. */ | |
7631 | seen_valid_for_isa = FALSE; | |
7632 | opcode = first; | |
7633 | do | |
7634 | { | |
7635 | gas_assert (strcmp (opcode->name, first->name) == 0); | |
7636 | if (is_opcode_valid_16 (opcode)) | |
7637 | { | |
7638 | seen_valid_for_isa = TRUE; | |
7639 | if (match_mips16_insn (insn, opcode, tokens)) | |
7640 | return TRUE; | |
7641 | } | |
7642 | ++opcode; | |
7643 | } | |
7644 | while (opcode < &mips16_opcodes[bfd_mips16_num_opcodes] | |
7645 | && strcmp (opcode->name, first->name) == 0); | |
7646 | ||
7647 | /* Handle the case where we didn't try to match an instruction because | |
7648 | all the alternatives were incompatible with the current ISA. */ | |
7649 | if (!seen_valid_for_isa) | |
7650 | { | |
7651 | match_invalid_for_isa (); | |
7652 | return TRUE; | |
7653 | } | |
7654 | ||
7655 | return FALSE; | |
7656 | } | |
7657 | ||
584892a6 RS |
7658 | /* Set up global variables for the start of a new macro. */ |
7659 | ||
7660 | static void | |
7661 | macro_start (void) | |
7662 | { | |
7663 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
df58fc94 RS |
7664 | memset (&mips_macro_warning.first_insn_sizes, 0, |
7665 | sizeof (mips_macro_warning.first_insn_sizes)); | |
7666 | memset (&mips_macro_warning.insns, 0, sizeof (mips_macro_warning.insns)); | |
584892a6 | 7667 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder |
11625dd8 | 7668 | && delayed_branch_p (&history[0])); |
df58fc94 RS |
7669 | switch (history[0].insn_mo->pinfo2 |
7670 | & (INSN2_BRANCH_DELAY_32BIT | INSN2_BRANCH_DELAY_16BIT)) | |
7671 | { | |
7672 | case INSN2_BRANCH_DELAY_32BIT: | |
7673 | mips_macro_warning.delay_slot_length = 4; | |
7674 | break; | |
7675 | case INSN2_BRANCH_DELAY_16BIT: | |
7676 | mips_macro_warning.delay_slot_length = 2; | |
7677 | break; | |
7678 | default: | |
7679 | mips_macro_warning.delay_slot_length = 0; | |
7680 | break; | |
7681 | } | |
7682 | mips_macro_warning.first_frag = NULL; | |
584892a6 RS |
7683 | } |
7684 | ||
df58fc94 RS |
7685 | /* Given that a macro is longer than one instruction or of the wrong size, |
7686 | return the appropriate warning for it. Return null if no warning is | |
7687 | needed. SUBTYPE is a bitmask of RELAX_DELAY_SLOT, RELAX_DELAY_SLOT_16BIT, | |
7688 | RELAX_DELAY_SLOT_SIZE_FIRST, RELAX_DELAY_SLOT_SIZE_SECOND, | |
7689 | and RELAX_NOMACRO. */ | |
584892a6 RS |
7690 | |
7691 | static const char * | |
7692 | macro_warning (relax_substateT subtype) | |
7693 | { | |
7694 | if (subtype & RELAX_DELAY_SLOT) | |
1661c76c | 7695 | return _("macro instruction expanded into multiple instructions" |
584892a6 RS |
7696 | " in a branch delay slot"); |
7697 | else if (subtype & RELAX_NOMACRO) | |
1661c76c | 7698 | return _("macro instruction expanded into multiple instructions"); |
df58fc94 RS |
7699 | else if (subtype & (RELAX_DELAY_SLOT_SIZE_FIRST |
7700 | | RELAX_DELAY_SLOT_SIZE_SECOND)) | |
7701 | return ((subtype & RELAX_DELAY_SLOT_16BIT) | |
1661c76c | 7702 | ? _("macro instruction expanded into a wrong size instruction" |
df58fc94 | 7703 | " in a 16-bit branch delay slot") |
1661c76c | 7704 | : _("macro instruction expanded into a wrong size instruction" |
df58fc94 | 7705 | " in a 32-bit branch delay slot")); |
584892a6 RS |
7706 | else |
7707 | return 0; | |
7708 | } | |
7709 | ||
7710 | /* Finish up a macro. Emit warnings as appropriate. */ | |
7711 | ||
7712 | static void | |
7713 | macro_end (void) | |
7714 | { | |
df58fc94 RS |
7715 | /* Relaxation warning flags. */ |
7716 | relax_substateT subtype = 0; | |
7717 | ||
7718 | /* Check delay slot size requirements. */ | |
7719 | if (mips_macro_warning.delay_slot_length == 2) | |
7720 | subtype |= RELAX_DELAY_SLOT_16BIT; | |
7721 | if (mips_macro_warning.delay_slot_length != 0) | |
584892a6 | 7722 | { |
df58fc94 RS |
7723 | if (mips_macro_warning.delay_slot_length |
7724 | != mips_macro_warning.first_insn_sizes[0]) | |
7725 | subtype |= RELAX_DELAY_SLOT_SIZE_FIRST; | |
7726 | if (mips_macro_warning.delay_slot_length | |
7727 | != mips_macro_warning.first_insn_sizes[1]) | |
7728 | subtype |= RELAX_DELAY_SLOT_SIZE_SECOND; | |
7729 | } | |
584892a6 | 7730 | |
df58fc94 RS |
7731 | /* Check instruction count requirements. */ |
7732 | if (mips_macro_warning.insns[0] > 1 || mips_macro_warning.insns[1] > 1) | |
7733 | { | |
7734 | if (mips_macro_warning.insns[1] > mips_macro_warning.insns[0]) | |
584892a6 RS |
7735 | subtype |= RELAX_SECOND_LONGER; |
7736 | if (mips_opts.warn_about_macros) | |
7737 | subtype |= RELAX_NOMACRO; | |
7738 | if (mips_macro_warning.delay_slot_p) | |
7739 | subtype |= RELAX_DELAY_SLOT; | |
df58fc94 | 7740 | } |
584892a6 | 7741 | |
df58fc94 RS |
7742 | /* If both alternatives fail to fill a delay slot correctly, |
7743 | emit the warning now. */ | |
7744 | if ((subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0 | |
7745 | && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0) | |
7746 | { | |
7747 | relax_substateT s; | |
7748 | const char *msg; | |
7749 | ||
7750 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
7751 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
7752 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
7753 | msg = macro_warning (s); | |
7754 | if (msg != NULL) | |
7755 | as_warn ("%s", msg); | |
7756 | subtype &= ~s; | |
7757 | } | |
7758 | ||
7759 | /* If both implementations are longer than 1 instruction, then emit the | |
7760 | warning now. */ | |
7761 | if (mips_macro_warning.insns[0] > 1 && mips_macro_warning.insns[1] > 1) | |
7762 | { | |
7763 | relax_substateT s; | |
7764 | const char *msg; | |
7765 | ||
7766 | s = subtype & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT); | |
7767 | msg = macro_warning (s); | |
7768 | if (msg != NULL) | |
7769 | as_warn ("%s", msg); | |
7770 | subtype &= ~s; | |
584892a6 | 7771 | } |
df58fc94 RS |
7772 | |
7773 | /* If any flags still set, then one implementation might need a warning | |
7774 | and the other either will need one of a different kind or none at all. | |
7775 | Pass any remaining flags over to relaxation. */ | |
7776 | if (mips_macro_warning.first_frag != NULL) | |
7777 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
584892a6 RS |
7778 | } |
7779 | ||
df58fc94 RS |
7780 | /* Instruction operand formats used in macros that vary between |
7781 | standard MIPS and microMIPS code. */ | |
7782 | ||
833794fc | 7783 | static const char * const brk_fmt[2][2] = { { "c", "c" }, { "mF", "c" } }; |
df58fc94 RS |
7784 | static const char * const cop12_fmt[2] = { "E,o(b)", "E,~(b)" }; |
7785 | static const char * const jalr_fmt[2] = { "d,s", "t,s" }; | |
7786 | static const char * const lui_fmt[2] = { "t,u", "s,u" }; | |
7787 | static const char * const mem12_fmt[2] = { "t,o(b)", "t,~(b)" }; | |
833794fc | 7788 | static const char * const mfhl_fmt[2][2] = { { "d", "d" }, { "mj", "s" } }; |
df58fc94 RS |
7789 | static const char * const shft_fmt[2] = { "d,w,<", "t,r,<" }; |
7790 | static const char * const trap_fmt[2] = { "s,t,q", "s,t,|" }; | |
7791 | ||
833794fc | 7792 | #define BRK_FMT (brk_fmt[mips_opts.micromips][mips_opts.insn32]) |
df58fc94 RS |
7793 | #define COP12_FMT (cop12_fmt[mips_opts.micromips]) |
7794 | #define JALR_FMT (jalr_fmt[mips_opts.micromips]) | |
7795 | #define LUI_FMT (lui_fmt[mips_opts.micromips]) | |
7796 | #define MEM12_FMT (mem12_fmt[mips_opts.micromips]) | |
833794fc | 7797 | #define MFHL_FMT (mfhl_fmt[mips_opts.micromips][mips_opts.insn32]) |
df58fc94 RS |
7798 | #define SHFT_FMT (shft_fmt[mips_opts.micromips]) |
7799 | #define TRAP_FMT (trap_fmt[mips_opts.micromips]) | |
7800 | ||
6e1304d8 RS |
7801 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
7802 | The first argument in *ARGS will be either the code for a single | |
7803 | relocation or -1 followed by the three codes that make up a | |
7804 | composite relocation. */ | |
7805 | ||
7806 | static void | |
7807 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
7808 | { | |
7809 | int i, next; | |
7810 | ||
7811 | next = va_arg (*args, int); | |
7812 | if (next >= 0) | |
7813 | r[0] = (bfd_reloc_code_real_type) next; | |
7814 | else | |
f2ae14a1 RS |
7815 | { |
7816 | for (i = 0; i < 3; i++) | |
7817 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
7818 | /* This function is only used for 16-bit relocation fields. | |
7819 | To make the macro code simpler, treat an unrelocated value | |
7820 | in the same way as BFD_RELOC_LO16. */ | |
7821 | if (r[0] == BFD_RELOC_UNUSED) | |
7822 | r[0] = BFD_RELOC_LO16; | |
7823 | } | |
6e1304d8 RS |
7824 | } |
7825 | ||
252b5132 RH |
7826 | /* Build an instruction created by a macro expansion. This is passed |
7827 | a pointer to the count of instructions created so far, an | |
7828 | expression, the name of the instruction to build, an operand format | |
7829 | string, and corresponding arguments. */ | |
7830 | ||
252b5132 | 7831 | static void |
67c0d1eb | 7832 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 7833 | { |
df58fc94 | 7834 | const struct mips_opcode *mo = NULL; |
f6688943 | 7835 | bfd_reloc_code_real_type r[3]; |
df58fc94 | 7836 | const struct mips_opcode *amo; |
e077a1c8 | 7837 | const struct mips_operand *operand; |
df58fc94 RS |
7838 | struct hash_control *hash; |
7839 | struct mips_cl_insn insn; | |
252b5132 | 7840 | va_list args; |
e077a1c8 | 7841 | unsigned int uval; |
252b5132 | 7842 | |
252b5132 | 7843 | va_start (args, fmt); |
252b5132 | 7844 | |
252b5132 RH |
7845 | if (mips_opts.mips16) |
7846 | { | |
03ea81db | 7847 | mips16_macro_build (ep, name, fmt, &args); |
252b5132 RH |
7848 | va_end (args); |
7849 | return; | |
7850 | } | |
7851 | ||
f6688943 TS |
7852 | r[0] = BFD_RELOC_UNUSED; |
7853 | r[1] = BFD_RELOC_UNUSED; | |
7854 | r[2] = BFD_RELOC_UNUSED; | |
df58fc94 RS |
7855 | hash = mips_opts.micromips ? micromips_op_hash : op_hash; |
7856 | amo = (struct mips_opcode *) hash_find (hash, name); | |
7857 | gas_assert (amo); | |
7858 | gas_assert (strcmp (name, amo->name) == 0); | |
1e915849 | 7859 | |
df58fc94 | 7860 | do |
8b082fb1 TS |
7861 | { |
7862 | /* Search until we get a match for NAME. It is assumed here that | |
df58fc94 RS |
7863 | macros will never generate MDMX, MIPS-3D, or MT instructions. |
7864 | We try to match an instruction that fulfils the branch delay | |
7865 | slot instruction length requirement (if any) of the previous | |
7866 | instruction. While doing this we record the first instruction | |
7867 | seen that matches all the other conditions and use it anyway | |
7868 | if the requirement cannot be met; we will issue an appropriate | |
7869 | warning later on. */ | |
7870 | if (strcmp (fmt, amo->args) == 0 | |
7871 | && amo->pinfo != INSN_MACRO | |
7872 | && is_opcode_valid (amo) | |
7873 | && is_size_valid (amo)) | |
7874 | { | |
7875 | if (is_delay_slot_valid (amo)) | |
7876 | { | |
7877 | mo = amo; | |
7878 | break; | |
7879 | } | |
7880 | else if (!mo) | |
7881 | mo = amo; | |
7882 | } | |
8b082fb1 | 7883 | |
df58fc94 RS |
7884 | ++amo; |
7885 | gas_assert (amo->name); | |
252b5132 | 7886 | } |
df58fc94 | 7887 | while (strcmp (name, amo->name) == 0); |
252b5132 | 7888 | |
df58fc94 | 7889 | gas_assert (mo); |
1e915849 | 7890 | create_insn (&insn, mo); |
e077a1c8 | 7891 | for (; *fmt; ++fmt) |
252b5132 | 7892 | { |
e077a1c8 | 7893 | switch (*fmt) |
252b5132 | 7894 | { |
252b5132 RH |
7895 | case ',': |
7896 | case '(': | |
7897 | case ')': | |
252b5132 | 7898 | case 'z': |
e077a1c8 | 7899 | break; |
252b5132 RH |
7900 | |
7901 | case 'i': | |
7902 | case 'j': | |
6e1304d8 | 7903 | macro_read_relocs (&args, r); |
9c2799c2 | 7904 | gas_assert (*r == BFD_RELOC_GPREL16 |
e391c024 RS |
7905 | || *r == BFD_RELOC_MIPS_HIGHER |
7906 | || *r == BFD_RELOC_HI16_S | |
7907 | || *r == BFD_RELOC_LO16 | |
7908 | || *r == BFD_RELOC_MIPS_GOT_OFST); | |
e077a1c8 | 7909 | break; |
e391c024 RS |
7910 | |
7911 | case 'o': | |
7912 | macro_read_relocs (&args, r); | |
e077a1c8 | 7913 | break; |
252b5132 RH |
7914 | |
7915 | case 'u': | |
6e1304d8 | 7916 | macro_read_relocs (&args, r); |
9c2799c2 | 7917 | gas_assert (ep != NULL |
90ecf173 MR |
7918 | && (ep->X_op == O_constant |
7919 | || (ep->X_op == O_symbol | |
7920 | && (*r == BFD_RELOC_MIPS_HIGHEST | |
7921 | || *r == BFD_RELOC_HI16_S | |
7922 | || *r == BFD_RELOC_HI16 | |
7923 | || *r == BFD_RELOC_GPREL16 | |
7924 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
7925 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); | |
e077a1c8 | 7926 | break; |
252b5132 RH |
7927 | |
7928 | case 'p': | |
9c2799c2 | 7929 | gas_assert (ep != NULL); |
bad36eac | 7930 | |
252b5132 RH |
7931 | /* |
7932 | * This allows macro() to pass an immediate expression for | |
7933 | * creating short branches without creating a symbol. | |
bad36eac DJ |
7934 | * |
7935 | * We don't allow branch relaxation for these branches, as | |
7936 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
7937 | */ |
7938 | if (ep->X_op == O_constant) | |
7939 | { | |
df58fc94 RS |
7940 | /* For microMIPS we always use relocations for branches. |
7941 | So we should not resolve immediate values. */ | |
7942 | gas_assert (!mips_opts.micromips); | |
7943 | ||
bad36eac DJ |
7944 | if ((ep->X_add_number & 3) != 0) |
7945 | as_bad (_("branch to misaligned address (0x%lx)"), | |
7946 | (unsigned long) ep->X_add_number); | |
7947 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
7948 | as_bad (_("branch address range overflow (0x%lx)"), | |
7949 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
7950 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
7951 | ep = NULL; | |
7952 | } | |
7953 | else | |
0b25d3e6 | 7954 | *r = BFD_RELOC_16_PCREL_S2; |
e077a1c8 | 7955 | break; |
252b5132 RH |
7956 | |
7957 | case 'a': | |
9c2799c2 | 7958 | gas_assert (ep != NULL); |
f6688943 | 7959 | *r = BFD_RELOC_MIPS_JMP; |
e077a1c8 | 7960 | break; |
d43b4baf | 7961 | |
252b5132 | 7962 | default: |
e077a1c8 RS |
7963 | operand = (mips_opts.micromips |
7964 | ? decode_micromips_operand (fmt) | |
7965 | : decode_mips_operand (fmt)); | |
7966 | if (!operand) | |
7967 | abort (); | |
7968 | ||
7969 | uval = va_arg (args, int); | |
7970 | if (operand->type == OP_CLO_CLZ_DEST) | |
7971 | uval |= (uval << 5); | |
7972 | insn_insert_operand (&insn, operand, uval); | |
7973 | ||
7974 | if (*fmt == '+' || *fmt == 'm') | |
7975 | ++fmt; | |
7976 | break; | |
252b5132 | 7977 | } |
252b5132 RH |
7978 | } |
7979 | va_end (args); | |
9c2799c2 | 7980 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 7981 | |
df58fc94 | 7982 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
7983 | } |
7984 | ||
7985 | static void | |
67c0d1eb | 7986 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
03ea81db | 7987 | va_list *args) |
252b5132 | 7988 | { |
1e915849 | 7989 | struct mips_opcode *mo; |
252b5132 | 7990 | struct mips_cl_insn insn; |
e077a1c8 | 7991 | const struct mips_operand *operand; |
f6688943 TS |
7992 | bfd_reloc_code_real_type r[3] |
7993 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 7994 | |
1e915849 | 7995 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
9c2799c2 NC |
7996 | gas_assert (mo); |
7997 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 | 7998 | |
1e915849 | 7999 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 8000 | { |
1e915849 | 8001 | ++mo; |
9c2799c2 NC |
8002 | gas_assert (mo->name); |
8003 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
8004 | } |
8005 | ||
1e915849 | 8006 | create_insn (&insn, mo); |
e077a1c8 | 8007 | for (; *fmt; ++fmt) |
252b5132 RH |
8008 | { |
8009 | int c; | |
8010 | ||
e077a1c8 | 8011 | c = *fmt; |
252b5132 RH |
8012 | switch (c) |
8013 | { | |
252b5132 RH |
8014 | case ',': |
8015 | case '(': | |
8016 | case ')': | |
e077a1c8 | 8017 | break; |
252b5132 RH |
8018 | |
8019 | case '0': | |
8020 | case 'S': | |
8021 | case 'P': | |
8022 | case 'R': | |
e077a1c8 | 8023 | break; |
252b5132 RH |
8024 | |
8025 | case '<': | |
8026 | case '>': | |
8027 | case '4': | |
8028 | case '5': | |
8029 | case 'H': | |
8030 | case 'W': | |
8031 | case 'D': | |
8032 | case 'j': | |
8033 | case '8': | |
8034 | case 'V': | |
8035 | case 'C': | |
8036 | case 'U': | |
8037 | case 'k': | |
8038 | case 'K': | |
8039 | case 'p': | |
8040 | case 'q': | |
8041 | { | |
b886a2ab RS |
8042 | offsetT value; |
8043 | ||
9c2799c2 | 8044 | gas_assert (ep != NULL); |
252b5132 RH |
8045 | |
8046 | if (ep->X_op != O_constant) | |
874e8986 | 8047 | *r = (int) BFD_RELOC_UNUSED + c; |
b886a2ab | 8048 | else if (calculate_reloc (*r, ep->X_add_number, &value)) |
252b5132 | 8049 | { |
b886a2ab | 8050 | mips16_immed (NULL, 0, c, *r, value, 0, &insn.insn_opcode); |
252b5132 | 8051 | ep = NULL; |
f6688943 | 8052 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
8053 | } |
8054 | } | |
e077a1c8 | 8055 | break; |
252b5132 | 8056 | |
e077a1c8 RS |
8057 | default: |
8058 | operand = decode_mips16_operand (c, FALSE); | |
8059 | if (!operand) | |
8060 | abort (); | |
252b5132 | 8061 | |
4a06e5a2 | 8062 | insn_insert_operand (&insn, operand, va_arg (*args, int)); |
e077a1c8 RS |
8063 | break; |
8064 | } | |
252b5132 RH |
8065 | } |
8066 | ||
9c2799c2 | 8067 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 8068 | |
df58fc94 | 8069 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
8070 | } |
8071 | ||
438c16b8 TS |
8072 | /* |
8073 | * Generate a "jalr" instruction with a relocation hint to the called | |
8074 | * function. This occurs in NewABI PIC code. | |
8075 | */ | |
8076 | static void | |
df58fc94 | 8077 | macro_build_jalr (expressionS *ep, int cprestore) |
438c16b8 | 8078 | { |
df58fc94 RS |
8079 | static const bfd_reloc_code_real_type jalr_relocs[2] |
8080 | = { BFD_RELOC_MIPS_JALR, BFD_RELOC_MICROMIPS_JALR }; | |
8081 | bfd_reloc_code_real_type jalr_reloc = jalr_relocs[mips_opts.micromips]; | |
8082 | const char *jalr; | |
685736be | 8083 | char *f = NULL; |
b34976b6 | 8084 | |
1180b5a4 | 8085 | if (MIPS_JALR_HINT_P (ep)) |
f21f8242 | 8086 | { |
cc3d92a5 | 8087 | frag_grow (8); |
f21f8242 AO |
8088 | f = frag_more (0); |
8089 | } | |
2906b037 | 8090 | if (mips_opts.micromips) |
df58fc94 | 8091 | { |
833794fc MR |
8092 | jalr = ((mips_opts.noreorder && !cprestore) || mips_opts.insn32 |
8093 | ? "jalr" : "jalrs"); | |
e64af278 | 8094 | if (MIPS_JALR_HINT_P (ep) |
833794fc | 8095 | || mips_opts.insn32 |
e64af278 | 8096 | || (history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
df58fc94 RS |
8097 | macro_build (NULL, jalr, "t,s", RA, PIC_CALL_REG); |
8098 | else | |
8099 | macro_build (NULL, jalr, "mj", PIC_CALL_REG); | |
8100 | } | |
2906b037 MR |
8101 | else |
8102 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); | |
1180b5a4 | 8103 | if (MIPS_JALR_HINT_P (ep)) |
df58fc94 | 8104 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, ep, FALSE, jalr_reloc); |
438c16b8 TS |
8105 | } |
8106 | ||
252b5132 RH |
8107 | /* |
8108 | * Generate a "lui" instruction. | |
8109 | */ | |
8110 | static void | |
67c0d1eb | 8111 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 | 8112 | { |
9c2799c2 | 8113 | gas_assert (! mips_opts.mips16); |
252b5132 | 8114 | |
df58fc94 | 8115 | if (ep->X_op != O_constant) |
252b5132 | 8116 | { |
9c2799c2 | 8117 | gas_assert (ep->X_op == O_symbol); |
bbe506e8 TS |
8118 | /* _gp_disp is a special case, used from s_cpload. |
8119 | __gnu_local_gp is used if mips_no_shared. */ | |
9c2799c2 | 8120 | gas_assert (mips_pic == NO_PIC |
78e1bb40 | 8121 | || (! HAVE_NEWABI |
aa6975fb ILT |
8122 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
8123 | || (! mips_in_shared | |
bbe506e8 TS |
8124 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
8125 | "__gnu_local_gp") == 0)); | |
252b5132 RH |
8126 | } |
8127 | ||
df58fc94 | 8128 | macro_build (ep, "lui", LUI_FMT, regnum, BFD_RELOC_HI16_S); |
252b5132 RH |
8129 | } |
8130 | ||
885add95 CD |
8131 | /* Generate a sequence of instructions to do a load or store from a constant |
8132 | offset off of a base register (breg) into/from a target register (treg), | |
8133 | using AT if necessary. */ | |
8134 | static void | |
67c0d1eb RS |
8135 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
8136 | int treg, int breg, int dbl) | |
885add95 | 8137 | { |
9c2799c2 | 8138 | gas_assert (ep->X_op == O_constant); |
885add95 | 8139 | |
256ab948 | 8140 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
8141 | if (!dbl) |
8142 | normalize_constant_expr (ep); | |
256ab948 | 8143 | |
67c1ffbe | 8144 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 8145 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
8146 | as_warn (_("operand overflow")); |
8147 | ||
8148 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
8149 | { | |
8150 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 8151 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
8152 | } |
8153 | else | |
8154 | { | |
8155 | /* 32-bit offset, need multiple instructions and AT, like: | |
8156 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
8157 | addu $tempreg,$tempreg,$breg | |
8158 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
8159 | to handle the complete offset. */ | |
67c0d1eb RS |
8160 | macro_build_lui (ep, AT); |
8161 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
8162 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 | 8163 | |
741fe287 | 8164 | if (!mips_opts.at) |
1661c76c | 8165 | as_bad (_("macro used $at after \".set noat\"")); |
885add95 CD |
8166 | } |
8167 | } | |
8168 | ||
252b5132 RH |
8169 | /* set_at() |
8170 | * Generates code to set the $at register to true (one) | |
8171 | * if reg is less than the immediate expression. | |
8172 | */ | |
8173 | static void | |
67c0d1eb | 8174 | set_at (int reg, int unsignedp) |
252b5132 | 8175 | { |
b0e6f033 | 8176 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 | 8177 | && imm_expr.X_add_number < 0x8000) |
67c0d1eb RS |
8178 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
8179 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
8180 | else |
8181 | { | |
67c0d1eb RS |
8182 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
8183 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); | |
252b5132 RH |
8184 | } |
8185 | } | |
8186 | ||
252b5132 RH |
8187 | /* Count the leading zeroes by performing a binary chop. This is a |
8188 | bulky bit of source, but performance is a LOT better for the | |
8189 | majority of values than a simple loop to count the bits: | |
8190 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
8191 | if ((v) & (1 << (31 - lcnt))) | |
8192 | break; | |
8193 | However it is not code size friendly, and the gain will drop a bit | |
8194 | on certain cached systems. | |
8195 | */ | |
8196 | #define COUNT_TOP_ZEROES(v) \ | |
8197 | (((v) & ~0xffff) == 0 \ | |
8198 | ? ((v) & ~0xff) == 0 \ | |
8199 | ? ((v) & ~0xf) == 0 \ | |
8200 | ? ((v) & ~0x3) == 0 \ | |
8201 | ? ((v) & ~0x1) == 0 \ | |
8202 | ? !(v) \ | |
8203 | ? 32 \ | |
8204 | : 31 \ | |
8205 | : 30 \ | |
8206 | : ((v) & ~0x7) == 0 \ | |
8207 | ? 29 \ | |
8208 | : 28 \ | |
8209 | : ((v) & ~0x3f) == 0 \ | |
8210 | ? ((v) & ~0x1f) == 0 \ | |
8211 | ? 27 \ | |
8212 | : 26 \ | |
8213 | : ((v) & ~0x7f) == 0 \ | |
8214 | ? 25 \ | |
8215 | : 24 \ | |
8216 | : ((v) & ~0xfff) == 0 \ | |
8217 | ? ((v) & ~0x3ff) == 0 \ | |
8218 | ? ((v) & ~0x1ff) == 0 \ | |
8219 | ? 23 \ | |
8220 | : 22 \ | |
8221 | : ((v) & ~0x7ff) == 0 \ | |
8222 | ? 21 \ | |
8223 | : 20 \ | |
8224 | : ((v) & ~0x3fff) == 0 \ | |
8225 | ? ((v) & ~0x1fff) == 0 \ | |
8226 | ? 19 \ | |
8227 | : 18 \ | |
8228 | : ((v) & ~0x7fff) == 0 \ | |
8229 | ? 17 \ | |
8230 | : 16 \ | |
8231 | : ((v) & ~0xffffff) == 0 \ | |
8232 | ? ((v) & ~0xfffff) == 0 \ | |
8233 | ? ((v) & ~0x3ffff) == 0 \ | |
8234 | ? ((v) & ~0x1ffff) == 0 \ | |
8235 | ? 15 \ | |
8236 | : 14 \ | |
8237 | : ((v) & ~0x7ffff) == 0 \ | |
8238 | ? 13 \ | |
8239 | : 12 \ | |
8240 | : ((v) & ~0x3fffff) == 0 \ | |
8241 | ? ((v) & ~0x1fffff) == 0 \ | |
8242 | ? 11 \ | |
8243 | : 10 \ | |
8244 | : ((v) & ~0x7fffff) == 0 \ | |
8245 | ? 9 \ | |
8246 | : 8 \ | |
8247 | : ((v) & ~0xfffffff) == 0 \ | |
8248 | ? ((v) & ~0x3ffffff) == 0 \ | |
8249 | ? ((v) & ~0x1ffffff) == 0 \ | |
8250 | ? 7 \ | |
8251 | : 6 \ | |
8252 | : ((v) & ~0x7ffffff) == 0 \ | |
8253 | ? 5 \ | |
8254 | : 4 \ | |
8255 | : ((v) & ~0x3fffffff) == 0 \ | |
8256 | ? ((v) & ~0x1fffffff) == 0 \ | |
8257 | ? 3 \ | |
8258 | : 2 \ | |
8259 | : ((v) & ~0x7fffffff) == 0 \ | |
8260 | ? 1 \ | |
8261 | : 0) | |
8262 | ||
8263 | /* load_register() | |
67c1ffbe | 8264 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
8265 | * an absolute expression value into a register. |
8266 | */ | |
8267 | static void | |
67c0d1eb | 8268 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
8269 | { |
8270 | int freg; | |
8271 | expressionS hi32, lo32; | |
8272 | ||
8273 | if (ep->X_op != O_big) | |
8274 | { | |
9c2799c2 | 8275 | gas_assert (ep->X_op == O_constant); |
256ab948 TS |
8276 | |
8277 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
8278 | if (!dbl) |
8279 | normalize_constant_expr (ep); | |
256ab948 TS |
8280 | |
8281 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
8282 | { |
8283 | /* We can handle 16 bit signed values with an addiu to | |
8284 | $zero. No need to ever use daddiu here, since $zero and | |
8285 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 8286 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
8287 | return; |
8288 | } | |
8289 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
8290 | { | |
8291 | /* We can handle 16 bit unsigned values with an ori to | |
8292 | $zero. */ | |
67c0d1eb | 8293 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
8294 | return; |
8295 | } | |
256ab948 | 8296 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
8297 | { |
8298 | /* 32 bit values require an lui. */ | |
df58fc94 | 8299 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 8300 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 8301 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
8302 | return; |
8303 | } | |
8304 | } | |
8305 | ||
8306 | /* The value is larger than 32 bits. */ | |
8307 | ||
2051e8c4 | 8308 | if (!dbl || HAVE_32BIT_GPRS) |
252b5132 | 8309 | { |
55e08f71 NC |
8310 | char value[32]; |
8311 | ||
8312 | sprintf_vma (value, ep->X_add_number); | |
1661c76c | 8313 | as_bad (_("number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 8314 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
8315 | return; |
8316 | } | |
8317 | ||
8318 | if (ep->X_op != O_big) | |
8319 | { | |
8320 | hi32 = *ep; | |
8321 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
8322 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
8323 | hi32.X_add_number &= 0xffffffff; | |
8324 | lo32 = *ep; | |
8325 | lo32.X_add_number &= 0xffffffff; | |
8326 | } | |
8327 | else | |
8328 | { | |
9c2799c2 | 8329 | gas_assert (ep->X_add_number > 2); |
252b5132 RH |
8330 | if (ep->X_add_number == 3) |
8331 | generic_bignum[3] = 0; | |
8332 | else if (ep->X_add_number > 4) | |
1661c76c | 8333 | as_bad (_("number larger than 64 bits")); |
252b5132 RH |
8334 | lo32.X_op = O_constant; |
8335 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
8336 | hi32.X_op = O_constant; | |
8337 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
8338 | } | |
8339 | ||
8340 | if (hi32.X_add_number == 0) | |
8341 | freg = 0; | |
8342 | else | |
8343 | { | |
8344 | int shift, bit; | |
8345 | unsigned long hi, lo; | |
8346 | ||
956cd1d6 | 8347 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
8348 | { |
8349 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
8350 | { | |
67c0d1eb | 8351 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
8352 | return; |
8353 | } | |
8354 | if (lo32.X_add_number & 0x80000000) | |
8355 | { | |
df58fc94 | 8356 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 8357 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 8358 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
8359 | return; |
8360 | } | |
8361 | } | |
252b5132 RH |
8362 | |
8363 | /* Check for 16bit shifted constant. We know that hi32 is | |
8364 | non-zero, so start the mask on the first bit of the hi32 | |
8365 | value. */ | |
8366 | shift = 17; | |
8367 | do | |
beae10d5 KH |
8368 | { |
8369 | unsigned long himask, lomask; | |
8370 | ||
8371 | if (shift < 32) | |
8372 | { | |
8373 | himask = 0xffff >> (32 - shift); | |
8374 | lomask = (0xffff << shift) & 0xffffffff; | |
8375 | } | |
8376 | else | |
8377 | { | |
8378 | himask = 0xffff << (shift - 32); | |
8379 | lomask = 0; | |
8380 | } | |
8381 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
8382 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
8383 | { | |
8384 | expressionS tmp; | |
8385 | ||
8386 | tmp.X_op = O_constant; | |
8387 | if (shift < 32) | |
8388 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
8389 | | (lo32.X_add_number >> shift)); | |
8390 | else | |
8391 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb | 8392 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
df58fc94 | 8393 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 8394 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
8395 | return; |
8396 | } | |
f9419b05 | 8397 | ++shift; |
beae10d5 KH |
8398 | } |
8399 | while (shift <= (64 - 16)); | |
252b5132 RH |
8400 | |
8401 | /* Find the bit number of the lowest one bit, and store the | |
8402 | shifted value in hi/lo. */ | |
8403 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
8404 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
8405 | if (lo != 0) | |
8406 | { | |
8407 | bit = 0; | |
8408 | while ((lo & 1) == 0) | |
8409 | { | |
8410 | lo >>= 1; | |
8411 | ++bit; | |
8412 | } | |
8413 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
8414 | hi >>= bit; | |
8415 | } | |
8416 | else | |
8417 | { | |
8418 | bit = 32; | |
8419 | while ((hi & 1) == 0) | |
8420 | { | |
8421 | hi >>= 1; | |
8422 | ++bit; | |
8423 | } | |
8424 | lo = hi; | |
8425 | hi = 0; | |
8426 | } | |
8427 | ||
8428 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
8429 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
8430 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
8431 | { |
8432 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 8433 | if (shift != 0) |
beae10d5 | 8434 | { |
252b5132 RH |
8435 | expressionS tmp; |
8436 | ||
8437 | /* This instruction will set the register to be all | |
8438 | ones. */ | |
beae10d5 KH |
8439 | tmp.X_op = O_constant; |
8440 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 8441 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
8442 | if (bit != 0) |
8443 | { | |
8444 | bit += shift; | |
df58fc94 | 8445 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 8446 | reg, reg, (bit >= 32) ? bit - 32 : bit); |
beae10d5 | 8447 | } |
df58fc94 | 8448 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", SHFT_FMT, |
67c0d1eb | 8449 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
8450 | return; |
8451 | } | |
8452 | } | |
252b5132 RH |
8453 | |
8454 | /* Sign extend hi32 before calling load_register, because we can | |
8455 | generally get better code when we load a sign extended value. */ | |
8456 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 8457 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 8458 | load_register (reg, &hi32, 0); |
252b5132 RH |
8459 | freg = reg; |
8460 | } | |
8461 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
8462 | { | |
8463 | if (freg != 0) | |
8464 | { | |
df58fc94 | 8465 | macro_build (NULL, "dsll32", SHFT_FMT, reg, freg, 0); |
252b5132 RH |
8466 | freg = reg; |
8467 | } | |
8468 | } | |
8469 | else | |
8470 | { | |
8471 | expressionS mid16; | |
8472 | ||
956cd1d6 | 8473 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 8474 | { |
df58fc94 RS |
8475 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
8476 | macro_build (NULL, "dsrl32", SHFT_FMT, reg, reg, 0); | |
beae10d5 KH |
8477 | return; |
8478 | } | |
252b5132 RH |
8479 | |
8480 | if (freg != 0) | |
8481 | { | |
df58fc94 | 8482 | macro_build (NULL, "dsll", SHFT_FMT, reg, freg, 16); |
252b5132 RH |
8483 | freg = reg; |
8484 | } | |
8485 | mid16 = lo32; | |
8486 | mid16.X_add_number >>= 16; | |
67c0d1eb | 8487 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
df58fc94 | 8488 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
252b5132 RH |
8489 | freg = reg; |
8490 | } | |
8491 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 8492 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
8493 | } |
8494 | ||
269137b2 TS |
8495 | static inline void |
8496 | load_delay_nop (void) | |
8497 | { | |
8498 | if (!gpr_interlocks) | |
8499 | macro_build (NULL, "nop", ""); | |
8500 | } | |
8501 | ||
252b5132 RH |
8502 | /* Load an address into a register. */ |
8503 | ||
8504 | static void | |
67c0d1eb | 8505 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 8506 | { |
252b5132 RH |
8507 | if (ep->X_op != O_constant |
8508 | && ep->X_op != O_symbol) | |
8509 | { | |
8510 | as_bad (_("expression too complex")); | |
8511 | ep->X_op = O_constant; | |
8512 | } | |
8513 | ||
8514 | if (ep->X_op == O_constant) | |
8515 | { | |
67c0d1eb | 8516 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
8517 | return; |
8518 | } | |
8519 | ||
8520 | if (mips_pic == NO_PIC) | |
8521 | { | |
8522 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 8523 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
8524 | Otherwise we want |
8525 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
8526 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 8527 | If we have an addend, we always use the latter form. |
76b3015f | 8528 | |
d6bc6245 TS |
8529 | With 64bit address space and a usable $at we want |
8530 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8531 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8532 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8533 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
8534 | dsll32 $reg,0 | |
3a482fd5 | 8535 | daddu $reg,$reg,$at |
76b3015f | 8536 | |
c03099e6 | 8537 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
8538 | on superscalar processors. |
8539 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8540 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8541 | dsll $reg,16 | |
8542 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
8543 | dsll $reg,16 | |
8544 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
8545 | |
8546 | For GP relative symbols in 64bit address space we can use | |
8547 | the same sequence as in 32bit address space. */ | |
aed1a261 | 8548 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 8549 | { |
6caf9ef4 TS |
8550 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
8551 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
8552 | { | |
8553 | relax_start (ep->X_add_symbol); | |
8554 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
8555 | mips_gp_register, BFD_RELOC_GPREL16); | |
8556 | relax_switch (); | |
8557 | } | |
d6bc6245 | 8558 | |
741fe287 | 8559 | if (*used_at == 0 && mips_opts.at) |
d6bc6245 | 8560 | { |
df58fc94 RS |
8561 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
8562 | macro_build (ep, "lui", LUI_FMT, AT, BFD_RELOC_HI16_S); | |
67c0d1eb RS |
8563 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
8564 | BFD_RELOC_MIPS_HIGHER); | |
8565 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
df58fc94 | 8566 | macro_build (NULL, "dsll32", SHFT_FMT, reg, reg, 0); |
67c0d1eb | 8567 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); |
d6bc6245 TS |
8568 | *used_at = 1; |
8569 | } | |
8570 | else | |
8571 | { | |
df58fc94 | 8572 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb RS |
8573 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
8574 | BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 8575 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 8576 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); |
df58fc94 | 8577 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 8578 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); |
d6bc6245 | 8579 | } |
6caf9ef4 TS |
8580 | |
8581 | if (mips_relax.sequence) | |
8582 | relax_end (); | |
d6bc6245 | 8583 | } |
252b5132 RH |
8584 | else |
8585 | { | |
d6bc6245 | 8586 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 8587 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 8588 | { |
4d7206a2 | 8589 | relax_start (ep->X_add_symbol); |
67c0d1eb | 8590 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 8591 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 8592 | relax_switch (); |
d6bc6245 | 8593 | } |
67c0d1eb RS |
8594 | macro_build_lui (ep, reg); |
8595 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
8596 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
8597 | if (mips_relax.sequence) |
8598 | relax_end (); | |
d6bc6245 | 8599 | } |
252b5132 | 8600 | } |
0a44bf69 | 8601 | else if (!mips_big_got) |
252b5132 RH |
8602 | { |
8603 | expressionS ex; | |
8604 | ||
8605 | /* If this is a reference to an external symbol, we want | |
8606 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8607 | Otherwise we want | |
8608 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8609 | nop | |
8610 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
8611 | If there is a constant, it must be added in after. |
8612 | ||
ed6fb7bd | 8613 | If we have NewABI, we want |
f5040a92 AO |
8614 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
8615 | unless we're referencing a global symbol with a non-zero | |
8616 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
8617 | if (HAVE_NEWABI) |
8618 | { | |
f5040a92 AO |
8619 | if (ep->X_add_number) |
8620 | { | |
4d7206a2 | 8621 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 8622 | ep->X_add_number = 0; |
4d7206a2 | 8623 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
8624 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
8625 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
8626 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
8627 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
8628 | ex.X_op = O_constant; | |
67c0d1eb | 8629 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 8630 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 8631 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 8632 | relax_switch (); |
f5040a92 | 8633 | } |
67c0d1eb | 8634 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 8635 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
8636 | if (mips_relax.sequence) |
8637 | relax_end (); | |
ed6fb7bd SC |
8638 | } |
8639 | else | |
8640 | { | |
f5040a92 AO |
8641 | ex.X_add_number = ep->X_add_number; |
8642 | ep->X_add_number = 0; | |
67c0d1eb RS |
8643 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
8644 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 8645 | load_delay_nop (); |
4d7206a2 RS |
8646 | relax_start (ep->X_add_symbol); |
8647 | relax_switch (); | |
67c0d1eb | 8648 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 8649 | BFD_RELOC_LO16); |
4d7206a2 | 8650 | relax_end (); |
ed6fb7bd | 8651 | |
f5040a92 AO |
8652 | if (ex.X_add_number != 0) |
8653 | { | |
8654 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
8655 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
8656 | ex.X_op = O_constant; | |
67c0d1eb | 8657 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 8658 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 8659 | } |
252b5132 RH |
8660 | } |
8661 | } | |
0a44bf69 | 8662 | else if (mips_big_got) |
252b5132 RH |
8663 | { |
8664 | expressionS ex; | |
252b5132 RH |
8665 | |
8666 | /* This is the large GOT case. If this is a reference to an | |
8667 | external symbol, we want | |
8668 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8669 | addu $reg,$reg,$gp | |
8670 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
8671 | |
8672 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
8673 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
8674 | nop | |
8675 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 8676 | If there is a constant, it must be added in after. |
f5040a92 AO |
8677 | |
8678 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
8679 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
8680 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 8681 | */ |
438c16b8 TS |
8682 | if (HAVE_NEWABI) |
8683 | { | |
4d7206a2 | 8684 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 8685 | ep->X_add_number = 0; |
4d7206a2 | 8686 | relax_start (ep->X_add_symbol); |
df58fc94 | 8687 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8688 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
8689 | reg, reg, mips_gp_register); | |
8690 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
8691 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
8692 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
8693 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
8694 | else if (ex.X_add_number) | |
8695 | { | |
8696 | ex.X_op = O_constant; | |
67c0d1eb RS |
8697 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
8698 | BFD_RELOC_LO16); | |
f5040a92 AO |
8699 | } |
8700 | ||
8701 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 8702 | relax_switch (); |
67c0d1eb | 8703 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 8704 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
8705 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
8706 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 8707 | relax_end (); |
438c16b8 | 8708 | } |
252b5132 | 8709 | else |
438c16b8 | 8710 | { |
f5040a92 AO |
8711 | ex.X_add_number = ep->X_add_number; |
8712 | ep->X_add_number = 0; | |
4d7206a2 | 8713 | relax_start (ep->X_add_symbol); |
df58fc94 | 8714 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8715 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
8716 | reg, reg, mips_gp_register); | |
8717 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
8718 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
8719 | relax_switch (); |
8720 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
8721 | { |
8722 | /* We need a nop before loading from $gp. This special | |
8723 | check is required because the lui which starts the main | |
8724 | instruction stream does not refer to $gp, and so will not | |
8725 | insert the nop which may be required. */ | |
67c0d1eb | 8726 | macro_build (NULL, "nop", ""); |
438c16b8 | 8727 | } |
67c0d1eb | 8728 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 8729 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 8730 | load_delay_nop (); |
67c0d1eb | 8731 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 8732 | BFD_RELOC_LO16); |
4d7206a2 | 8733 | relax_end (); |
438c16b8 | 8734 | |
f5040a92 AO |
8735 | if (ex.X_add_number != 0) |
8736 | { | |
8737 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
8738 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
8739 | ex.X_op = O_constant; | |
67c0d1eb RS |
8740 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
8741 | BFD_RELOC_LO16); | |
f5040a92 | 8742 | } |
252b5132 RH |
8743 | } |
8744 | } | |
252b5132 RH |
8745 | else |
8746 | abort (); | |
8fc2e39e | 8747 | |
741fe287 | 8748 | if (!mips_opts.at && *used_at == 1) |
1661c76c | 8749 | as_bad (_("macro used $at after \".set noat\"")); |
252b5132 RH |
8750 | } |
8751 | ||
ea1fb5dc RS |
8752 | /* Move the contents of register SOURCE into register DEST. */ |
8753 | ||
8754 | static void | |
67c0d1eb | 8755 | move_register (int dest, int source) |
ea1fb5dc | 8756 | { |
df58fc94 RS |
8757 | /* Prefer to use a 16-bit microMIPS instruction unless the previous |
8758 | instruction specifically requires a 32-bit one. */ | |
8759 | if (mips_opts.micromips | |
833794fc | 8760 | && !mips_opts.insn32 |
df58fc94 | 8761 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
7951ca42 | 8762 | macro_build (NULL, "move", "mp,mj", dest, source); |
df58fc94 RS |
8763 | else |
8764 | macro_build (NULL, HAVE_32BIT_GPRS ? "addu" : "daddu", "d,v,t", | |
8765 | dest, source, 0); | |
ea1fb5dc RS |
8766 | } |
8767 | ||
4d7206a2 | 8768 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
8769 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
8770 | The two alternatives are: | |
4d7206a2 RS |
8771 | |
8772 | Global symbol Local sybmol | |
8773 | ------------- ------------ | |
8774 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
8775 | ... ... | |
8776 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
8777 | ||
8778 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
8779 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
8780 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
8781 | |
8782 | static void | |
67c0d1eb | 8783 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
8784 | { |
8785 | expressionS global; | |
8786 | ||
8787 | global = *local; | |
8788 | global.X_add_number = 0; | |
8789 | ||
8790 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
8791 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
8792 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 8793 | relax_switch (); |
67c0d1eb RS |
8794 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
8795 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
8796 | relax_end (); |
8797 | } | |
8798 | ||
8799 | static void | |
67c0d1eb | 8800 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
8801 | { |
8802 | expressionS global; | |
8803 | ||
8804 | global.X_op = O_constant; | |
8805 | global.X_op_symbol = NULL; | |
8806 | global.X_add_symbol = NULL; | |
8807 | global.X_add_number = local->X_add_number; | |
8808 | ||
8809 | relax_start (local->X_add_symbol); | |
67c0d1eb | 8810 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
8811 | dest, dest, BFD_RELOC_LO16); |
8812 | relax_switch (); | |
67c0d1eb | 8813 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
8814 | relax_end (); |
8815 | } | |
8816 | ||
f6a22291 MR |
8817 | static void |
8818 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
8819 | { | |
8820 | expressionS global; | |
8821 | int hold_mips_optimize; | |
8822 | ||
8823 | global.X_op = O_constant; | |
8824 | global.X_op_symbol = NULL; | |
8825 | global.X_add_symbol = NULL; | |
8826 | global.X_add_number = local->X_add_number; | |
8827 | ||
8828 | relax_start (local->X_add_symbol); | |
8829 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
8830 | relax_switch (); | |
8831 | /* Set mips_optimize around the lui instruction to avoid | |
8832 | inserting an unnecessary nop after the lw. */ | |
8833 | hold_mips_optimize = mips_optimize; | |
8834 | mips_optimize = 2; | |
8835 | macro_build_lui (&global, tmp); | |
8836 | mips_optimize = hold_mips_optimize; | |
8837 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
8838 | relax_end (); | |
8839 | ||
8840 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
8841 | } | |
8842 | ||
df58fc94 RS |
8843 | /* Emit a sequence of instructions to emulate a branch likely operation. |
8844 | BR is an ordinary branch corresponding to one to be emulated. BRNEG | |
8845 | is its complementing branch with the original condition negated. | |
8846 | CALL is set if the original branch specified the link operation. | |
8847 | EP, FMT, SREG and TREG specify the usual macro_build() parameters. | |
8848 | ||
8849 | Code like this is produced in the noreorder mode: | |
8850 | ||
8851 | BRNEG <args>, 1f | |
8852 | nop | |
8853 | b <sym> | |
8854 | delay slot (executed only if branch taken) | |
8855 | 1: | |
8856 | ||
8857 | or, if CALL is set: | |
8858 | ||
8859 | BRNEG <args>, 1f | |
8860 | nop | |
8861 | bal <sym> | |
8862 | delay slot (executed only if branch taken) | |
8863 | 1: | |
8864 | ||
8865 | In the reorder mode the delay slot would be filled with a nop anyway, | |
8866 | so code produced is simply: | |
8867 | ||
8868 | BR <args>, <sym> | |
8869 | nop | |
8870 | ||
8871 | This function is used when producing code for the microMIPS ASE that | |
8872 | does not implement branch likely instructions in hardware. */ | |
8873 | ||
8874 | static void | |
8875 | macro_build_branch_likely (const char *br, const char *brneg, | |
8876 | int call, expressionS *ep, const char *fmt, | |
8877 | unsigned int sreg, unsigned int treg) | |
8878 | { | |
8879 | int noreorder = mips_opts.noreorder; | |
8880 | expressionS expr1; | |
8881 | ||
8882 | gas_assert (mips_opts.micromips); | |
8883 | start_noreorder (); | |
8884 | if (noreorder) | |
8885 | { | |
8886 | micromips_label_expr (&expr1); | |
8887 | macro_build (&expr1, brneg, fmt, sreg, treg); | |
8888 | macro_build (NULL, "nop", ""); | |
8889 | macro_build (ep, call ? "bal" : "b", "p"); | |
8890 | ||
8891 | /* Set to true so that append_insn adds a label. */ | |
8892 | emit_branch_likely_macro = TRUE; | |
8893 | } | |
8894 | else | |
8895 | { | |
8896 | macro_build (ep, br, fmt, sreg, treg); | |
8897 | macro_build (NULL, "nop", ""); | |
8898 | } | |
8899 | end_noreorder (); | |
8900 | } | |
8901 | ||
8902 | /* Emit a coprocessor branch-likely macro specified by TYPE, using CC as | |
8903 | the condition code tested. EP specifies the branch target. */ | |
8904 | ||
8905 | static void | |
8906 | macro_build_branch_ccl (int type, expressionS *ep, unsigned int cc) | |
8907 | { | |
8908 | const int call = 0; | |
8909 | const char *brneg; | |
8910 | const char *br; | |
8911 | ||
8912 | switch (type) | |
8913 | { | |
8914 | case M_BC1FL: | |
8915 | br = "bc1f"; | |
8916 | brneg = "bc1t"; | |
8917 | break; | |
8918 | case M_BC1TL: | |
8919 | br = "bc1t"; | |
8920 | brneg = "bc1f"; | |
8921 | break; | |
8922 | case M_BC2FL: | |
8923 | br = "bc2f"; | |
8924 | brneg = "bc2t"; | |
8925 | break; | |
8926 | case M_BC2TL: | |
8927 | br = "bc2t"; | |
8928 | brneg = "bc2f"; | |
8929 | break; | |
8930 | default: | |
8931 | abort (); | |
8932 | } | |
8933 | macro_build_branch_likely (br, brneg, call, ep, "N,p", cc, ZERO); | |
8934 | } | |
8935 | ||
8936 | /* Emit a two-argument branch macro specified by TYPE, using SREG as | |
8937 | the register tested. EP specifies the branch target. */ | |
8938 | ||
8939 | static void | |
8940 | macro_build_branch_rs (int type, expressionS *ep, unsigned int sreg) | |
8941 | { | |
8942 | const char *brneg = NULL; | |
8943 | const char *br; | |
8944 | int call = 0; | |
8945 | ||
8946 | switch (type) | |
8947 | { | |
8948 | case M_BGEZ: | |
8949 | br = "bgez"; | |
8950 | break; | |
8951 | case M_BGEZL: | |
8952 | br = mips_opts.micromips ? "bgez" : "bgezl"; | |
8953 | brneg = "bltz"; | |
8954 | break; | |
8955 | case M_BGEZALL: | |
8956 | gas_assert (mips_opts.micromips); | |
833794fc | 8957 | br = mips_opts.insn32 ? "bgezal" : "bgezals"; |
df58fc94 RS |
8958 | brneg = "bltz"; |
8959 | call = 1; | |
8960 | break; | |
8961 | case M_BGTZ: | |
8962 | br = "bgtz"; | |
8963 | break; | |
8964 | case M_BGTZL: | |
8965 | br = mips_opts.micromips ? "bgtz" : "bgtzl"; | |
8966 | brneg = "blez"; | |
8967 | break; | |
8968 | case M_BLEZ: | |
8969 | br = "blez"; | |
8970 | break; | |
8971 | case M_BLEZL: | |
8972 | br = mips_opts.micromips ? "blez" : "blezl"; | |
8973 | brneg = "bgtz"; | |
8974 | break; | |
8975 | case M_BLTZ: | |
8976 | br = "bltz"; | |
8977 | break; | |
8978 | case M_BLTZL: | |
8979 | br = mips_opts.micromips ? "bltz" : "bltzl"; | |
8980 | brneg = "bgez"; | |
8981 | break; | |
8982 | case M_BLTZALL: | |
8983 | gas_assert (mips_opts.micromips); | |
833794fc | 8984 | br = mips_opts.insn32 ? "bltzal" : "bltzals"; |
df58fc94 RS |
8985 | brneg = "bgez"; |
8986 | call = 1; | |
8987 | break; | |
8988 | default: | |
8989 | abort (); | |
8990 | } | |
8991 | if (mips_opts.micromips && brneg) | |
8992 | macro_build_branch_likely (br, brneg, call, ep, "s,p", sreg, ZERO); | |
8993 | else | |
8994 | macro_build (ep, br, "s,p", sreg); | |
8995 | } | |
8996 | ||
8997 | /* Emit a three-argument branch macro specified by TYPE, using SREG and | |
8998 | TREG as the registers tested. EP specifies the branch target. */ | |
8999 | ||
9000 | static void | |
9001 | macro_build_branch_rsrt (int type, expressionS *ep, | |
9002 | unsigned int sreg, unsigned int treg) | |
9003 | { | |
9004 | const char *brneg = NULL; | |
9005 | const int call = 0; | |
9006 | const char *br; | |
9007 | ||
9008 | switch (type) | |
9009 | { | |
9010 | case M_BEQ: | |
9011 | case M_BEQ_I: | |
9012 | br = "beq"; | |
9013 | break; | |
9014 | case M_BEQL: | |
9015 | case M_BEQL_I: | |
9016 | br = mips_opts.micromips ? "beq" : "beql"; | |
9017 | brneg = "bne"; | |
9018 | break; | |
9019 | case M_BNE: | |
9020 | case M_BNE_I: | |
9021 | br = "bne"; | |
9022 | break; | |
9023 | case M_BNEL: | |
9024 | case M_BNEL_I: | |
9025 | br = mips_opts.micromips ? "bne" : "bnel"; | |
9026 | brneg = "beq"; | |
9027 | break; | |
9028 | default: | |
9029 | abort (); | |
9030 | } | |
9031 | if (mips_opts.micromips && brneg) | |
9032 | macro_build_branch_likely (br, brneg, call, ep, "s,t,p", sreg, treg); | |
9033 | else | |
9034 | macro_build (ep, br, "s,t,p", sreg, treg); | |
9035 | } | |
9036 | ||
f2ae14a1 RS |
9037 | /* Return the high part that should be loaded in order to make the low |
9038 | part of VALUE accessible using an offset of OFFBITS bits. */ | |
9039 | ||
9040 | static offsetT | |
9041 | offset_high_part (offsetT value, unsigned int offbits) | |
9042 | { | |
9043 | offsetT bias; | |
9044 | addressT low_mask; | |
9045 | ||
9046 | if (offbits == 0) | |
9047 | return value; | |
9048 | bias = 1 << (offbits - 1); | |
9049 | low_mask = bias * 2 - 1; | |
9050 | return (value + bias) & ~low_mask; | |
9051 | } | |
9052 | ||
9053 | /* Return true if the value stored in offset_expr and offset_reloc | |
9054 | fits into a signed offset of OFFBITS bits. RANGE is the maximum | |
9055 | amount that the caller wants to add without inducing overflow | |
9056 | and ALIGN is the known alignment of the value in bytes. */ | |
9057 | ||
9058 | static bfd_boolean | |
9059 | small_offset_p (unsigned int range, unsigned int align, unsigned int offbits) | |
9060 | { | |
9061 | if (offbits == 16) | |
9062 | { | |
9063 | /* Accept any relocation operator if overflow isn't a concern. */ | |
9064 | if (range < align && *offset_reloc != BFD_RELOC_UNUSED) | |
9065 | return TRUE; | |
9066 | ||
9067 | /* These relocations are guaranteed not to overflow in correct links. */ | |
9068 | if (*offset_reloc == BFD_RELOC_MIPS_LITERAL | |
9069 | || gprel16_reloc_p (*offset_reloc)) | |
9070 | return TRUE; | |
9071 | } | |
9072 | if (offset_expr.X_op == O_constant | |
9073 | && offset_high_part (offset_expr.X_add_number, offbits) == 0 | |
9074 | && offset_high_part (offset_expr.X_add_number + range, offbits) == 0) | |
9075 | return TRUE; | |
9076 | return FALSE; | |
9077 | } | |
9078 | ||
252b5132 RH |
9079 | /* |
9080 | * Build macros | |
9081 | * This routine implements the seemingly endless macro or synthesized | |
9082 | * instructions and addressing modes in the mips assembly language. Many | |
9083 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 9084 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
9085 | * this verbose method. Others are not simple macros but are more like |
9086 | * optimizing code generation. | |
9087 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 9088 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
9089 | * The ensuing load upper instructions are ommited. This implies some kind |
9090 | * of global optimization. We currently only optimize within a single macro. | |
9091 | * For many of the load and store macros if the address is specified as a | |
9092 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
9093 | * first load register 'at' with zero and use it as the base register. The | |
9094 | * mips assembler simply uses register $zero. Just one tiny optimization | |
9095 | * we're missing. | |
9096 | */ | |
9097 | static void | |
833794fc | 9098 | macro (struct mips_cl_insn *ip, char *str) |
252b5132 | 9099 | { |
c0ebe874 RS |
9100 | const struct mips_operand_array *operands; |
9101 | unsigned int breg, i; | |
741fe287 | 9102 | unsigned int tempreg; |
252b5132 | 9103 | int mask; |
43841e91 | 9104 | int used_at = 0; |
df58fc94 | 9105 | expressionS label_expr; |
252b5132 | 9106 | expressionS expr1; |
df58fc94 | 9107 | expressionS *ep; |
252b5132 RH |
9108 | const char *s; |
9109 | const char *s2; | |
9110 | const char *fmt; | |
9111 | int likely = 0; | |
252b5132 | 9112 | int coproc = 0; |
7f3c4072 | 9113 | int offbits = 16; |
1abe91b1 | 9114 | int call = 0; |
df58fc94 RS |
9115 | int jals = 0; |
9116 | int dbl = 0; | |
9117 | int imm = 0; | |
9118 | int ust = 0; | |
9119 | int lp = 0; | |
f2ae14a1 | 9120 | bfd_boolean large_offset; |
252b5132 | 9121 | int off; |
252b5132 | 9122 | int hold_mips_optimize; |
f2ae14a1 | 9123 | unsigned int align; |
c0ebe874 | 9124 | unsigned int op[MAX_OPERANDS]; |
252b5132 | 9125 | |
9c2799c2 | 9126 | gas_assert (! mips_opts.mips16); |
252b5132 | 9127 | |
c0ebe874 RS |
9128 | operands = insn_operands (ip); |
9129 | for (i = 0; i < MAX_OPERANDS; i++) | |
9130 | if (operands->operand[i]) | |
9131 | op[i] = insn_extract_operand (ip, operands->operand[i]); | |
9132 | else | |
9133 | op[i] = -1; | |
9134 | ||
252b5132 RH |
9135 | mask = ip->insn_mo->mask; |
9136 | ||
df58fc94 RS |
9137 | label_expr.X_op = O_constant; |
9138 | label_expr.X_op_symbol = NULL; | |
9139 | label_expr.X_add_symbol = NULL; | |
9140 | label_expr.X_add_number = 0; | |
9141 | ||
252b5132 RH |
9142 | expr1.X_op = O_constant; |
9143 | expr1.X_op_symbol = NULL; | |
9144 | expr1.X_add_symbol = NULL; | |
9145 | expr1.X_add_number = 1; | |
f2ae14a1 | 9146 | align = 1; |
252b5132 RH |
9147 | |
9148 | switch (mask) | |
9149 | { | |
9150 | case M_DABS: | |
9151 | dbl = 1; | |
9152 | case M_ABS: | |
df58fc94 RS |
9153 | /* bgez $a0,1f |
9154 | move v0,$a0 | |
9155 | sub v0,$zero,$a0 | |
9156 | 1: | |
9157 | */ | |
252b5132 | 9158 | |
7d10b47d | 9159 | start_noreorder (); |
252b5132 | 9160 | |
df58fc94 RS |
9161 | if (mips_opts.micromips) |
9162 | micromips_label_expr (&label_expr); | |
9163 | else | |
9164 | label_expr.X_add_number = 8; | |
c0ebe874 RS |
9165 | macro_build (&label_expr, "bgez", "s,p", op[1]); |
9166 | if (op[0] == op[1]) | |
a605d2b3 | 9167 | macro_build (NULL, "nop", ""); |
252b5132 | 9168 | else |
c0ebe874 RS |
9169 | move_register (op[0], op[1]); |
9170 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", op[0], 0, op[1]); | |
df58fc94 RS |
9171 | if (mips_opts.micromips) |
9172 | micromips_add_label (); | |
252b5132 | 9173 | |
7d10b47d | 9174 | end_noreorder (); |
8fc2e39e | 9175 | break; |
252b5132 RH |
9176 | |
9177 | case M_ADD_I: | |
9178 | s = "addi"; | |
9179 | s2 = "add"; | |
9180 | goto do_addi; | |
9181 | case M_ADDU_I: | |
9182 | s = "addiu"; | |
9183 | s2 = "addu"; | |
9184 | goto do_addi; | |
9185 | case M_DADD_I: | |
9186 | dbl = 1; | |
9187 | s = "daddi"; | |
9188 | s2 = "dadd"; | |
df58fc94 RS |
9189 | if (!mips_opts.micromips) |
9190 | goto do_addi; | |
b0e6f033 | 9191 | if (imm_expr.X_add_number >= -0x200 |
df58fc94 RS |
9192 | && imm_expr.X_add_number < 0x200) |
9193 | { | |
b0e6f033 RS |
9194 | macro_build (NULL, s, "t,r,.", op[0], op[1], |
9195 | (int) imm_expr.X_add_number); | |
df58fc94 RS |
9196 | break; |
9197 | } | |
9198 | goto do_addi_i; | |
252b5132 RH |
9199 | case M_DADDU_I: |
9200 | dbl = 1; | |
9201 | s = "daddiu"; | |
9202 | s2 = "daddu"; | |
9203 | do_addi: | |
b0e6f033 | 9204 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 RH |
9205 | && imm_expr.X_add_number < 0x8000) |
9206 | { | |
c0ebe874 | 9207 | macro_build (&imm_expr, s, "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
8fc2e39e | 9208 | break; |
252b5132 | 9209 | } |
df58fc94 | 9210 | do_addi_i: |
8fc2e39e | 9211 | used_at = 1; |
67c0d1eb | 9212 | load_register (AT, &imm_expr, dbl); |
c0ebe874 | 9213 | macro_build (NULL, s2, "d,v,t", op[0], op[1], AT); |
252b5132 RH |
9214 | break; |
9215 | ||
9216 | case M_AND_I: | |
9217 | s = "andi"; | |
9218 | s2 = "and"; | |
9219 | goto do_bit; | |
9220 | case M_OR_I: | |
9221 | s = "ori"; | |
9222 | s2 = "or"; | |
9223 | goto do_bit; | |
9224 | case M_NOR_I: | |
9225 | s = ""; | |
9226 | s2 = "nor"; | |
9227 | goto do_bit; | |
9228 | case M_XOR_I: | |
9229 | s = "xori"; | |
9230 | s2 = "xor"; | |
9231 | do_bit: | |
b0e6f033 | 9232 | if (imm_expr.X_add_number >= 0 |
252b5132 RH |
9233 | && imm_expr.X_add_number < 0x10000) |
9234 | { | |
9235 | if (mask != M_NOR_I) | |
c0ebe874 | 9236 | macro_build (&imm_expr, s, "t,r,i", op[0], op[1], BFD_RELOC_LO16); |
252b5132 RH |
9237 | else |
9238 | { | |
67c0d1eb | 9239 | macro_build (&imm_expr, "ori", "t,r,i", |
c0ebe874 RS |
9240 | op[0], op[1], BFD_RELOC_LO16); |
9241 | macro_build (NULL, "nor", "d,v,t", op[0], op[0], 0); | |
252b5132 | 9242 | } |
8fc2e39e | 9243 | break; |
252b5132 RH |
9244 | } |
9245 | ||
8fc2e39e | 9246 | used_at = 1; |
67c0d1eb | 9247 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 | 9248 | macro_build (NULL, s2, "d,v,t", op[0], op[1], AT); |
252b5132 RH |
9249 | break; |
9250 | ||
8b082fb1 TS |
9251 | case M_BALIGN: |
9252 | switch (imm_expr.X_add_number) | |
9253 | { | |
9254 | case 0: | |
9255 | macro_build (NULL, "nop", ""); | |
9256 | break; | |
9257 | case 2: | |
c0ebe874 | 9258 | macro_build (NULL, "packrl.ph", "d,s,t", op[0], op[0], op[1]); |
8b082fb1 | 9259 | break; |
03f66e8a MR |
9260 | case 1: |
9261 | case 3: | |
c0ebe874 | 9262 | macro_build (NULL, "balign", "t,s,2", op[0], op[1], |
90ecf173 | 9263 | (int) imm_expr.X_add_number); |
8b082fb1 | 9264 | break; |
03f66e8a MR |
9265 | default: |
9266 | as_bad (_("BALIGN immediate not 0, 1, 2 or 3 (%lu)"), | |
9267 | (unsigned long) imm_expr.X_add_number); | |
9268 | break; | |
8b082fb1 TS |
9269 | } |
9270 | break; | |
9271 | ||
df58fc94 RS |
9272 | case M_BC1FL: |
9273 | case M_BC1TL: | |
9274 | case M_BC2FL: | |
9275 | case M_BC2TL: | |
9276 | gas_assert (mips_opts.micromips); | |
9277 | macro_build_branch_ccl (mask, &offset_expr, | |
9278 | EXTRACT_OPERAND (1, BCC, *ip)); | |
9279 | break; | |
9280 | ||
252b5132 | 9281 | case M_BEQ_I: |
252b5132 | 9282 | case M_BEQL_I: |
252b5132 | 9283 | case M_BNE_I: |
252b5132 | 9284 | case M_BNEL_I: |
b0e6f033 | 9285 | if (imm_expr.X_add_number == 0) |
c0ebe874 | 9286 | op[1] = 0; |
df58fc94 | 9287 | else |
252b5132 | 9288 | { |
c0ebe874 | 9289 | op[1] = AT; |
df58fc94 | 9290 | used_at = 1; |
c0ebe874 | 9291 | load_register (op[1], &imm_expr, HAVE_64BIT_GPRS); |
252b5132 | 9292 | } |
df58fc94 RS |
9293 | /* Fall through. */ |
9294 | case M_BEQL: | |
9295 | case M_BNEL: | |
c0ebe874 | 9296 | macro_build_branch_rsrt (mask, &offset_expr, op[0], op[1]); |
252b5132 RH |
9297 | break; |
9298 | ||
9299 | case M_BGEL: | |
9300 | likely = 1; | |
9301 | case M_BGE: | |
c0ebe874 RS |
9302 | if (op[1] == 0) |
9303 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, op[0]); | |
9304 | else if (op[0] == 0) | |
9305 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, op[1]); | |
df58fc94 | 9306 | else |
252b5132 | 9307 | { |
df58fc94 | 9308 | used_at = 1; |
c0ebe874 | 9309 | macro_build (NULL, "slt", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
9310 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9311 | &offset_expr, AT, ZERO); | |
252b5132 | 9312 | } |
df58fc94 RS |
9313 | break; |
9314 | ||
9315 | case M_BGEZL: | |
9316 | case M_BGEZALL: | |
9317 | case M_BGTZL: | |
9318 | case M_BLEZL: | |
9319 | case M_BLTZL: | |
9320 | case M_BLTZALL: | |
c0ebe874 | 9321 | macro_build_branch_rs (mask, &offset_expr, op[0]); |
252b5132 RH |
9322 | break; |
9323 | ||
9324 | case M_BGTL_I: | |
9325 | likely = 1; | |
9326 | case M_BGT_I: | |
90ecf173 | 9327 | /* Check for > max integer. */ |
b0e6f033 | 9328 | if (imm_expr.X_add_number >= GPR_SMAX) |
252b5132 RH |
9329 | { |
9330 | do_false: | |
90ecf173 | 9331 | /* Result is always false. */ |
252b5132 | 9332 | if (! likely) |
a605d2b3 | 9333 | macro_build (NULL, "nop", ""); |
252b5132 | 9334 | else |
df58fc94 | 9335 | macro_build_branch_rsrt (M_BNEL, &offset_expr, ZERO, ZERO); |
8fc2e39e | 9336 | break; |
252b5132 | 9337 | } |
f9419b05 | 9338 | ++imm_expr.X_add_number; |
252b5132 RH |
9339 | /* FALLTHROUGH */ |
9340 | case M_BGE_I: | |
9341 | case M_BGEL_I: | |
9342 | if (mask == M_BGEL_I) | |
9343 | likely = 1; | |
b0e6f033 | 9344 | if (imm_expr.X_add_number == 0) |
252b5132 | 9345 | { |
df58fc94 | 9346 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, |
c0ebe874 | 9347 | &offset_expr, op[0]); |
8fc2e39e | 9348 | break; |
252b5132 | 9349 | } |
b0e6f033 | 9350 | if (imm_expr.X_add_number == 1) |
252b5132 | 9351 | { |
df58fc94 | 9352 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, |
c0ebe874 | 9353 | &offset_expr, op[0]); |
8fc2e39e | 9354 | break; |
252b5132 | 9355 | } |
b0e6f033 | 9356 | if (imm_expr.X_add_number <= GPR_SMIN) |
252b5132 RH |
9357 | { |
9358 | do_true: | |
9359 | /* result is always true */ | |
1661c76c | 9360 | as_warn (_("branch %s is always true"), ip->insn_mo->name); |
67c0d1eb | 9361 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 9362 | break; |
252b5132 | 9363 | } |
8fc2e39e | 9364 | used_at = 1; |
c0ebe874 | 9365 | set_at (op[0], 0); |
df58fc94 RS |
9366 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9367 | &offset_expr, AT, ZERO); | |
252b5132 RH |
9368 | break; |
9369 | ||
9370 | case M_BGEUL: | |
9371 | likely = 1; | |
9372 | case M_BGEU: | |
c0ebe874 | 9373 | if (op[1] == 0) |
252b5132 | 9374 | goto do_true; |
c0ebe874 | 9375 | else if (op[0] == 0) |
df58fc94 | 9376 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
c0ebe874 | 9377 | &offset_expr, ZERO, op[1]); |
df58fc94 | 9378 | else |
252b5132 | 9379 | { |
df58fc94 | 9380 | used_at = 1; |
c0ebe874 | 9381 | macro_build (NULL, "sltu", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
9382 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9383 | &offset_expr, AT, ZERO); | |
252b5132 | 9384 | } |
252b5132 RH |
9385 | break; |
9386 | ||
9387 | case M_BGTUL_I: | |
9388 | likely = 1; | |
9389 | case M_BGTU_I: | |
c0ebe874 | 9390 | if (op[0] == 0 |
ca4e0257 | 9391 | || (HAVE_32BIT_GPRS |
f01dc953 | 9392 | && imm_expr.X_add_number == -1)) |
252b5132 | 9393 | goto do_false; |
f9419b05 | 9394 | ++imm_expr.X_add_number; |
252b5132 RH |
9395 | /* FALLTHROUGH */ |
9396 | case M_BGEU_I: | |
9397 | case M_BGEUL_I: | |
9398 | if (mask == M_BGEUL_I) | |
9399 | likely = 1; | |
b0e6f033 | 9400 | if (imm_expr.X_add_number == 0) |
252b5132 | 9401 | goto do_true; |
b0e6f033 | 9402 | else if (imm_expr.X_add_number == 1) |
df58fc94 | 9403 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
c0ebe874 | 9404 | &offset_expr, op[0], ZERO); |
df58fc94 | 9405 | else |
252b5132 | 9406 | { |
df58fc94 | 9407 | used_at = 1; |
c0ebe874 | 9408 | set_at (op[0], 1); |
df58fc94 RS |
9409 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9410 | &offset_expr, AT, ZERO); | |
252b5132 | 9411 | } |
252b5132 RH |
9412 | break; |
9413 | ||
9414 | case M_BGTL: | |
9415 | likely = 1; | |
9416 | case M_BGT: | |
c0ebe874 RS |
9417 | if (op[1] == 0) |
9418 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, op[0]); | |
9419 | else if (op[0] == 0) | |
9420 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, op[1]); | |
df58fc94 | 9421 | else |
252b5132 | 9422 | { |
df58fc94 | 9423 | used_at = 1; |
c0ebe874 | 9424 | macro_build (NULL, "slt", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
9425 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
9426 | &offset_expr, AT, ZERO); | |
252b5132 | 9427 | } |
252b5132 RH |
9428 | break; |
9429 | ||
9430 | case M_BGTUL: | |
9431 | likely = 1; | |
9432 | case M_BGTU: | |
c0ebe874 | 9433 | if (op[1] == 0) |
df58fc94 | 9434 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
c0ebe874 RS |
9435 | &offset_expr, op[0], ZERO); |
9436 | else if (op[0] == 0) | |
df58fc94 RS |
9437 | goto do_false; |
9438 | else | |
252b5132 | 9439 | { |
df58fc94 | 9440 | used_at = 1; |
c0ebe874 | 9441 | macro_build (NULL, "sltu", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
9442 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
9443 | &offset_expr, AT, ZERO); | |
252b5132 | 9444 | } |
252b5132 RH |
9445 | break; |
9446 | ||
9447 | case M_BLEL: | |
9448 | likely = 1; | |
9449 | case M_BLE: | |
c0ebe874 RS |
9450 | if (op[1] == 0) |
9451 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, op[0]); | |
9452 | else if (op[0] == 0) | |
9453 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, op[1]); | |
df58fc94 | 9454 | else |
252b5132 | 9455 | { |
df58fc94 | 9456 | used_at = 1; |
c0ebe874 | 9457 | macro_build (NULL, "slt", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
9458 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9459 | &offset_expr, AT, ZERO); | |
252b5132 | 9460 | } |
252b5132 RH |
9461 | break; |
9462 | ||
9463 | case M_BLEL_I: | |
9464 | likely = 1; | |
9465 | case M_BLE_I: | |
b0e6f033 | 9466 | if (imm_expr.X_add_number >= GPR_SMAX) |
252b5132 | 9467 | goto do_true; |
f9419b05 | 9468 | ++imm_expr.X_add_number; |
252b5132 RH |
9469 | /* FALLTHROUGH */ |
9470 | case M_BLT_I: | |
9471 | case M_BLTL_I: | |
9472 | if (mask == M_BLTL_I) | |
9473 | likely = 1; | |
b0e6f033 | 9474 | if (imm_expr.X_add_number == 0) |
c0ebe874 | 9475 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, op[0]); |
b0e6f033 | 9476 | else if (imm_expr.X_add_number == 1) |
c0ebe874 | 9477 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, op[0]); |
df58fc94 | 9478 | else |
252b5132 | 9479 | { |
df58fc94 | 9480 | used_at = 1; |
c0ebe874 | 9481 | set_at (op[0], 0); |
df58fc94 RS |
9482 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
9483 | &offset_expr, AT, ZERO); | |
252b5132 | 9484 | } |
252b5132 RH |
9485 | break; |
9486 | ||
9487 | case M_BLEUL: | |
9488 | likely = 1; | |
9489 | case M_BLEU: | |
c0ebe874 | 9490 | if (op[1] == 0) |
df58fc94 | 9491 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
c0ebe874 RS |
9492 | &offset_expr, op[0], ZERO); |
9493 | else if (op[0] == 0) | |
df58fc94 RS |
9494 | goto do_true; |
9495 | else | |
252b5132 | 9496 | { |
df58fc94 | 9497 | used_at = 1; |
c0ebe874 | 9498 | macro_build (NULL, "sltu", "d,v,t", AT, op[1], op[0]); |
df58fc94 RS |
9499 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
9500 | &offset_expr, AT, ZERO); | |
252b5132 | 9501 | } |
252b5132 RH |
9502 | break; |
9503 | ||
9504 | case M_BLEUL_I: | |
9505 | likely = 1; | |
9506 | case M_BLEU_I: | |
c0ebe874 | 9507 | if (op[0] == 0 |
ca4e0257 | 9508 | || (HAVE_32BIT_GPRS |
f01dc953 | 9509 | && imm_expr.X_add_number == -1)) |
252b5132 | 9510 | goto do_true; |
f9419b05 | 9511 | ++imm_expr.X_add_number; |
252b5132 RH |
9512 | /* FALLTHROUGH */ |
9513 | case M_BLTU_I: | |
9514 | case M_BLTUL_I: | |
9515 | if (mask == M_BLTUL_I) | |
9516 | likely = 1; | |
b0e6f033 | 9517 | if (imm_expr.X_add_number == 0) |
252b5132 | 9518 | goto do_false; |
b0e6f033 | 9519 | else if (imm_expr.X_add_number == 1) |
df58fc94 | 9520 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
c0ebe874 | 9521 | &offset_expr, op[0], ZERO); |
df58fc94 | 9522 | else |
252b5132 | 9523 | { |
df58fc94 | 9524 | used_at = 1; |
c0ebe874 | 9525 | set_at (op[0], 1); |
df58fc94 RS |
9526 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
9527 | &offset_expr, AT, ZERO); | |
252b5132 | 9528 | } |
252b5132 RH |
9529 | break; |
9530 | ||
9531 | case M_BLTL: | |
9532 | likely = 1; | |
9533 | case M_BLT: | |
c0ebe874 RS |
9534 | if (op[1] == 0) |
9535 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, op[0]); | |
9536 | else if (op[0] == 0) | |
9537 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, op[1]); | |
df58fc94 | 9538 | else |
252b5132 | 9539 | { |
df58fc94 | 9540 | used_at = 1; |
c0ebe874 | 9541 | macro_build (NULL, "slt", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
9542 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
9543 | &offset_expr, AT, ZERO); | |
252b5132 | 9544 | } |
252b5132 RH |
9545 | break; |
9546 | ||
9547 | case M_BLTUL: | |
9548 | likely = 1; | |
9549 | case M_BLTU: | |
c0ebe874 | 9550 | if (op[1] == 0) |
252b5132 | 9551 | goto do_false; |
c0ebe874 | 9552 | else if (op[0] == 0) |
df58fc94 | 9553 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
c0ebe874 | 9554 | &offset_expr, ZERO, op[1]); |
df58fc94 | 9555 | else |
252b5132 | 9556 | { |
df58fc94 | 9557 | used_at = 1; |
c0ebe874 | 9558 | macro_build (NULL, "sltu", "d,v,t", AT, op[0], op[1]); |
df58fc94 RS |
9559 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
9560 | &offset_expr, AT, ZERO); | |
252b5132 | 9561 | } |
252b5132 RH |
9562 | break; |
9563 | ||
9564 | case M_DDIV_3: | |
9565 | dbl = 1; | |
9566 | case M_DIV_3: | |
9567 | s = "mflo"; | |
9568 | goto do_div3; | |
9569 | case M_DREM_3: | |
9570 | dbl = 1; | |
9571 | case M_REM_3: | |
9572 | s = "mfhi"; | |
9573 | do_div3: | |
c0ebe874 | 9574 | if (op[2] == 0) |
252b5132 | 9575 | { |
1661c76c | 9576 | as_warn (_("divide by zero")); |
252b5132 | 9577 | if (mips_trap) |
df58fc94 | 9578 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 9579 | else |
df58fc94 | 9580 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 9581 | break; |
252b5132 RH |
9582 | } |
9583 | ||
7d10b47d | 9584 | start_noreorder (); |
252b5132 RH |
9585 | if (mips_trap) |
9586 | { | |
c0ebe874 RS |
9587 | macro_build (NULL, "teq", TRAP_FMT, op[2], ZERO, 7); |
9588 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", op[1], op[2]); | |
252b5132 RH |
9589 | } |
9590 | else | |
9591 | { | |
df58fc94 RS |
9592 | if (mips_opts.micromips) |
9593 | micromips_label_expr (&label_expr); | |
9594 | else | |
9595 | label_expr.X_add_number = 8; | |
c0ebe874 RS |
9596 | macro_build (&label_expr, "bne", "s,t,p", op[2], ZERO); |
9597 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", op[1], op[2]); | |
df58fc94 RS |
9598 | macro_build (NULL, "break", BRK_FMT, 7); |
9599 | if (mips_opts.micromips) | |
9600 | micromips_add_label (); | |
252b5132 RH |
9601 | } |
9602 | expr1.X_add_number = -1; | |
8fc2e39e | 9603 | used_at = 1; |
f6a22291 | 9604 | load_register (AT, &expr1, dbl); |
df58fc94 RS |
9605 | if (mips_opts.micromips) |
9606 | micromips_label_expr (&label_expr); | |
9607 | else | |
9608 | label_expr.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); | |
c0ebe874 | 9609 | macro_build (&label_expr, "bne", "s,t,p", op[2], AT); |
252b5132 RH |
9610 | if (dbl) |
9611 | { | |
9612 | expr1.X_add_number = 1; | |
f6a22291 | 9613 | load_register (AT, &expr1, dbl); |
df58fc94 | 9614 | macro_build (NULL, "dsll32", SHFT_FMT, AT, AT, 31); |
252b5132 RH |
9615 | } |
9616 | else | |
9617 | { | |
9618 | expr1.X_add_number = 0x80000000; | |
df58fc94 | 9619 | macro_build (&expr1, "lui", LUI_FMT, AT, BFD_RELOC_HI16); |
252b5132 RH |
9620 | } |
9621 | if (mips_trap) | |
9622 | { | |
c0ebe874 | 9623 | macro_build (NULL, "teq", TRAP_FMT, op[1], AT, 6); |
252b5132 RH |
9624 | /* We want to close the noreorder block as soon as possible, so |
9625 | that later insns are available for delay slot filling. */ | |
7d10b47d | 9626 | end_noreorder (); |
252b5132 RH |
9627 | } |
9628 | else | |
9629 | { | |
df58fc94 RS |
9630 | if (mips_opts.micromips) |
9631 | micromips_label_expr (&label_expr); | |
9632 | else | |
9633 | label_expr.X_add_number = 8; | |
c0ebe874 | 9634 | macro_build (&label_expr, "bne", "s,t,p", op[1], AT); |
a605d2b3 | 9635 | macro_build (NULL, "nop", ""); |
252b5132 RH |
9636 | |
9637 | /* We want to close the noreorder block as soon as possible, so | |
9638 | that later insns are available for delay slot filling. */ | |
7d10b47d | 9639 | end_noreorder (); |
252b5132 | 9640 | |
df58fc94 | 9641 | macro_build (NULL, "break", BRK_FMT, 6); |
252b5132 | 9642 | } |
df58fc94 RS |
9643 | if (mips_opts.micromips) |
9644 | micromips_add_label (); | |
c0ebe874 | 9645 | macro_build (NULL, s, MFHL_FMT, op[0]); |
252b5132 RH |
9646 | break; |
9647 | ||
9648 | case M_DIV_3I: | |
9649 | s = "div"; | |
9650 | s2 = "mflo"; | |
9651 | goto do_divi; | |
9652 | case M_DIVU_3I: | |
9653 | s = "divu"; | |
9654 | s2 = "mflo"; | |
9655 | goto do_divi; | |
9656 | case M_REM_3I: | |
9657 | s = "div"; | |
9658 | s2 = "mfhi"; | |
9659 | goto do_divi; | |
9660 | case M_REMU_3I: | |
9661 | s = "divu"; | |
9662 | s2 = "mfhi"; | |
9663 | goto do_divi; | |
9664 | case M_DDIV_3I: | |
9665 | dbl = 1; | |
9666 | s = "ddiv"; | |
9667 | s2 = "mflo"; | |
9668 | goto do_divi; | |
9669 | case M_DDIVU_3I: | |
9670 | dbl = 1; | |
9671 | s = "ddivu"; | |
9672 | s2 = "mflo"; | |
9673 | goto do_divi; | |
9674 | case M_DREM_3I: | |
9675 | dbl = 1; | |
9676 | s = "ddiv"; | |
9677 | s2 = "mfhi"; | |
9678 | goto do_divi; | |
9679 | case M_DREMU_3I: | |
9680 | dbl = 1; | |
9681 | s = "ddivu"; | |
9682 | s2 = "mfhi"; | |
9683 | do_divi: | |
b0e6f033 | 9684 | if (imm_expr.X_add_number == 0) |
252b5132 | 9685 | { |
1661c76c | 9686 | as_warn (_("divide by zero")); |
252b5132 | 9687 | if (mips_trap) |
df58fc94 | 9688 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 9689 | else |
df58fc94 | 9690 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 9691 | break; |
252b5132 | 9692 | } |
b0e6f033 | 9693 | if (imm_expr.X_add_number == 1) |
252b5132 RH |
9694 | { |
9695 | if (strcmp (s2, "mflo") == 0) | |
c0ebe874 | 9696 | move_register (op[0], op[1]); |
252b5132 | 9697 | else |
c0ebe874 | 9698 | move_register (op[0], ZERO); |
8fc2e39e | 9699 | break; |
252b5132 | 9700 | } |
b0e6f033 | 9701 | if (imm_expr.X_add_number == -1 && s[strlen (s) - 1] != 'u') |
252b5132 RH |
9702 | { |
9703 | if (strcmp (s2, "mflo") == 0) | |
c0ebe874 | 9704 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", op[0], op[1]); |
252b5132 | 9705 | else |
c0ebe874 | 9706 | move_register (op[0], ZERO); |
8fc2e39e | 9707 | break; |
252b5132 RH |
9708 | } |
9709 | ||
8fc2e39e | 9710 | used_at = 1; |
67c0d1eb | 9711 | load_register (AT, &imm_expr, dbl); |
c0ebe874 RS |
9712 | macro_build (NULL, s, "z,s,t", op[1], AT); |
9713 | macro_build (NULL, s2, MFHL_FMT, op[0]); | |
252b5132 RH |
9714 | break; |
9715 | ||
9716 | case M_DIVU_3: | |
9717 | s = "divu"; | |
9718 | s2 = "mflo"; | |
9719 | goto do_divu3; | |
9720 | case M_REMU_3: | |
9721 | s = "divu"; | |
9722 | s2 = "mfhi"; | |
9723 | goto do_divu3; | |
9724 | case M_DDIVU_3: | |
9725 | s = "ddivu"; | |
9726 | s2 = "mflo"; | |
9727 | goto do_divu3; | |
9728 | case M_DREMU_3: | |
9729 | s = "ddivu"; | |
9730 | s2 = "mfhi"; | |
9731 | do_divu3: | |
7d10b47d | 9732 | start_noreorder (); |
252b5132 RH |
9733 | if (mips_trap) |
9734 | { | |
c0ebe874 RS |
9735 | macro_build (NULL, "teq", TRAP_FMT, op[2], ZERO, 7); |
9736 | macro_build (NULL, s, "z,s,t", op[1], op[2]); | |
252b5132 RH |
9737 | /* We want to close the noreorder block as soon as possible, so |
9738 | that later insns are available for delay slot filling. */ | |
7d10b47d | 9739 | end_noreorder (); |
252b5132 RH |
9740 | } |
9741 | else | |
9742 | { | |
df58fc94 RS |
9743 | if (mips_opts.micromips) |
9744 | micromips_label_expr (&label_expr); | |
9745 | else | |
9746 | label_expr.X_add_number = 8; | |
c0ebe874 RS |
9747 | macro_build (&label_expr, "bne", "s,t,p", op[2], ZERO); |
9748 | macro_build (NULL, s, "z,s,t", op[1], op[2]); | |
252b5132 RH |
9749 | |
9750 | /* We want to close the noreorder block as soon as possible, so | |
9751 | that later insns are available for delay slot filling. */ | |
7d10b47d | 9752 | end_noreorder (); |
df58fc94 RS |
9753 | macro_build (NULL, "break", BRK_FMT, 7); |
9754 | if (mips_opts.micromips) | |
9755 | micromips_add_label (); | |
252b5132 | 9756 | } |
c0ebe874 | 9757 | macro_build (NULL, s2, MFHL_FMT, op[0]); |
8fc2e39e | 9758 | break; |
252b5132 | 9759 | |
1abe91b1 MR |
9760 | case M_DLCA_AB: |
9761 | dbl = 1; | |
9762 | case M_LCA_AB: | |
9763 | call = 1; | |
9764 | goto do_la; | |
252b5132 RH |
9765 | case M_DLA_AB: |
9766 | dbl = 1; | |
9767 | case M_LA_AB: | |
1abe91b1 | 9768 | do_la: |
252b5132 RH |
9769 | /* Load the address of a symbol into a register. If breg is not |
9770 | zero, we then add a base register to it. */ | |
9771 | ||
c0ebe874 | 9772 | breg = op[2]; |
3bec30a8 TS |
9773 | if (dbl && HAVE_32BIT_GPRS) |
9774 | as_warn (_("dla used to load 32-bit register")); | |
9775 | ||
90ecf173 | 9776 | if (!dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
9777 | as_warn (_("la used to load 64-bit address")); |
9778 | ||
f2ae14a1 | 9779 | if (small_offset_p (0, align, 16)) |
0c11417f | 9780 | { |
c0ebe874 | 9781 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", op[0], breg, |
f2ae14a1 | 9782 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2]); |
8fc2e39e | 9783 | break; |
0c11417f MR |
9784 | } |
9785 | ||
c0ebe874 | 9786 | if (mips_opts.at && (op[0] == breg)) |
afdbd6d0 CD |
9787 | { |
9788 | tempreg = AT; | |
9789 | used_at = 1; | |
9790 | } | |
9791 | else | |
c0ebe874 | 9792 | tempreg = op[0]; |
afdbd6d0 | 9793 | |
252b5132 RH |
9794 | if (offset_expr.X_op != O_symbol |
9795 | && offset_expr.X_op != O_constant) | |
9796 | { | |
1661c76c | 9797 | as_bad (_("expression too complex")); |
252b5132 RH |
9798 | offset_expr.X_op = O_constant; |
9799 | } | |
9800 | ||
252b5132 | 9801 | if (offset_expr.X_op == O_constant) |
aed1a261 | 9802 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
9803 | else if (mips_pic == NO_PIC) |
9804 | { | |
d6bc6245 | 9805 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 9806 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
9807 | Otherwise we want |
9808 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
9809 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
9810 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 9811 | so we may as well always use the latter form. |
76b3015f | 9812 | |
6caf9ef4 TS |
9813 | With 64bit address space and a usable $at we want |
9814 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
9815 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
9816 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
9817 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
9818 | dsll32 $tempreg,0 | |
9819 | daddu $tempreg,$tempreg,$at | |
9820 | ||
9821 | If $at is already in use, we use a path which is suboptimal | |
9822 | on superscalar processors. | |
9823 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
9824 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
9825 | dsll $tempreg,16 | |
9826 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
9827 | dsll $tempreg,16 | |
9828 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
9829 | ||
9830 | For GP relative symbols in 64bit address space we can use | |
9831 | the same sequence as in 32bit address space. */ | |
aed1a261 | 9832 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 9833 | { |
6caf9ef4 TS |
9834 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
9835 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
9836 | { | |
9837 | relax_start (offset_expr.X_add_symbol); | |
9838 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
9839 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
9840 | relax_switch (); | |
9841 | } | |
d6bc6245 | 9842 | |
741fe287 | 9843 | if (used_at == 0 && mips_opts.at) |
98d3f06f | 9844 | { |
df58fc94 | 9845 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 9846 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 9847 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 9848 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 9849 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 9850 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 9851 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 9852 | AT, AT, BFD_RELOC_LO16); |
df58fc94 | 9853 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb | 9854 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
98d3f06f KH |
9855 | used_at = 1; |
9856 | } | |
9857 | else | |
9858 | { | |
df58fc94 | 9859 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 9860 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 9861 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 9862 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
df58fc94 | 9863 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 9864 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 9865 | tempreg, tempreg, BFD_RELOC_HI16_S); |
df58fc94 | 9866 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 9867 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 9868 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 9869 | } |
6caf9ef4 TS |
9870 | |
9871 | if (mips_relax.sequence) | |
9872 | relax_end (); | |
98d3f06f KH |
9873 | } |
9874 | else | |
9875 | { | |
9876 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 9877 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 9878 | { |
4d7206a2 | 9879 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
9880 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
9881 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 9882 | relax_switch (); |
98d3f06f | 9883 | } |
6943caf0 | 9884 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
1661c76c | 9885 | as_bad (_("offset too large")); |
67c0d1eb RS |
9886 | macro_build_lui (&offset_expr, tempreg); |
9887 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
9888 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
9889 | if (mips_relax.sequence) |
9890 | relax_end (); | |
98d3f06f | 9891 | } |
252b5132 | 9892 | } |
0a44bf69 | 9893 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 9894 | { |
9117d219 NC |
9895 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
9896 | ||
252b5132 RH |
9897 | /* If this is a reference to an external symbol, and there |
9898 | is no constant, we want | |
9899 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 9900 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 9901 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
9902 | For a local symbol, we want |
9903 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9904 | nop | |
9905 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
9906 | ||
9907 | If we have a small constant, and this is a reference to | |
9908 | an external symbol, we want | |
9909 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9910 | nop | |
9911 | addiu $tempreg,$tempreg,<constant> | |
9912 | For a local symbol, we want the same instruction | |
9913 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
9914 | addiu instruction. | |
9915 | ||
9916 | If we have a large constant, and this is a reference to | |
9917 | an external symbol, we want | |
9918 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9919 | lui $at,<hiconstant> | |
9920 | addiu $at,$at,<loconstant> | |
9921 | addu $tempreg,$tempreg,$at | |
9922 | For a local symbol, we want the same instruction | |
9923 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 9924 | addiu instruction. |
ed6fb7bd SC |
9925 | */ |
9926 | ||
4d7206a2 | 9927 | if (offset_expr.X_add_number == 0) |
252b5132 | 9928 | { |
0a44bf69 RS |
9929 | if (mips_pic == SVR4_PIC |
9930 | && breg == 0 | |
9931 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
9932 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
9933 | ||
9934 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
9935 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
9936 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 9937 | if (breg != 0) |
252b5132 RH |
9938 | { |
9939 | /* We're going to put in an addu instruction using | |
9940 | tempreg, so we may as well insert the nop right | |
9941 | now. */ | |
269137b2 | 9942 | load_delay_nop (); |
252b5132 | 9943 | } |
4d7206a2 | 9944 | relax_switch (); |
67c0d1eb RS |
9945 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
9946 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 9947 | load_delay_nop (); |
67c0d1eb RS |
9948 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
9949 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 9950 | relax_end (); |
252b5132 RH |
9951 | /* FIXME: If breg == 0, and the next instruction uses |
9952 | $tempreg, then if this variant case is used an extra | |
9953 | nop will be generated. */ | |
9954 | } | |
4d7206a2 RS |
9955 | else if (offset_expr.X_add_number >= -0x8000 |
9956 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 9957 | { |
67c0d1eb | 9958 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 9959 | load_delay_nop (); |
67c0d1eb | 9960 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
9961 | } |
9962 | else | |
9963 | { | |
4d7206a2 RS |
9964 | expr1.X_add_number = offset_expr.X_add_number; |
9965 | offset_expr.X_add_number = | |
43c0598f | 9966 | SEXT_16BIT (offset_expr.X_add_number); |
67c0d1eb | 9967 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 9968 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
9969 | /* If we are going to add in a base register, and the |
9970 | target register and the base register are the same, | |
9971 | then we are using AT as a temporary register. Since | |
9972 | we want to load the constant into AT, we add our | |
9973 | current AT (from the global offset table) and the | |
9974 | register into the register now, and pretend we were | |
9975 | not using a base register. */ | |
c0ebe874 | 9976 | if (breg == op[0]) |
252b5132 | 9977 | { |
269137b2 | 9978 | load_delay_nop (); |
67c0d1eb | 9979 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 | 9980 | op[0], AT, breg); |
252b5132 | 9981 | breg = 0; |
c0ebe874 | 9982 | tempreg = op[0]; |
252b5132 | 9983 | } |
f6a22291 | 9984 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
9985 | used_at = 1; |
9986 | } | |
9987 | } | |
0a44bf69 | 9988 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 9989 | { |
67c0d1eb | 9990 | int add_breg_early = 0; |
f5040a92 AO |
9991 | |
9992 | /* If this is a reference to an external, and there is no | |
9993 | constant, or local symbol (*), with or without a | |
9994 | constant, we want | |
9995 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 9996 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
9997 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
9998 | ||
9999 | If we have a small constant, and this is a reference to | |
10000 | an external symbol, we want | |
10001 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
10002 | addiu $tempreg,$tempreg,<constant> | |
10003 | ||
10004 | If we have a large constant, and this is a reference to | |
10005 | an external symbol, we want | |
10006 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
10007 | lui $at,<hiconstant> | |
10008 | addiu $at,$at,<loconstant> | |
10009 | addu $tempreg,$tempreg,$at | |
10010 | ||
10011 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
10012 | local symbols, even though it introduces an additional | |
10013 | instruction. */ | |
10014 | ||
f5040a92 AO |
10015 | if (offset_expr.X_add_number) |
10016 | { | |
4d7206a2 | 10017 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
10018 | offset_expr.X_add_number = 0; |
10019 | ||
4d7206a2 | 10020 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
10021 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10022 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
10023 | |
10024 | if (expr1.X_add_number >= -0x8000 | |
10025 | && expr1.X_add_number < 0x8000) | |
10026 | { | |
67c0d1eb RS |
10027 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
10028 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 10029 | } |
ecd13cd3 | 10030 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 10031 | { |
c0ebe874 RS |
10032 | unsigned int dreg; |
10033 | ||
f5040a92 AO |
10034 | /* If we are going to add in a base register, and the |
10035 | target register and the base register are the same, | |
10036 | then we are using AT as a temporary register. Since | |
10037 | we want to load the constant into AT, we add our | |
10038 | current AT (from the global offset table) and the | |
10039 | register into the register now, and pretend we were | |
10040 | not using a base register. */ | |
c0ebe874 | 10041 | if (breg != op[0]) |
f5040a92 AO |
10042 | dreg = tempreg; |
10043 | else | |
10044 | { | |
9c2799c2 | 10045 | gas_assert (tempreg == AT); |
67c0d1eb | 10046 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10047 | op[0], AT, breg); |
10048 | dreg = op[0]; | |
67c0d1eb | 10049 | add_breg_early = 1; |
f5040a92 AO |
10050 | } |
10051 | ||
f6a22291 | 10052 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 10053 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10054 | dreg, dreg, AT); |
f5040a92 | 10055 | |
f5040a92 AO |
10056 | used_at = 1; |
10057 | } | |
10058 | else | |
10059 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
10060 | ||
4d7206a2 | 10061 | relax_switch (); |
f5040a92 AO |
10062 | offset_expr.X_add_number = expr1.X_add_number; |
10063 | ||
67c0d1eb RS |
10064 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10065 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
10066 | if (add_breg_early) | |
f5040a92 | 10067 | { |
67c0d1eb | 10068 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 | 10069 | op[0], tempreg, breg); |
f5040a92 | 10070 | breg = 0; |
c0ebe874 | 10071 | tempreg = op[0]; |
f5040a92 | 10072 | } |
4d7206a2 | 10073 | relax_end (); |
f5040a92 | 10074 | } |
4d7206a2 | 10075 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 10076 | { |
4d7206a2 | 10077 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
10078 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10079 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 10080 | relax_switch (); |
67c0d1eb RS |
10081 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10082 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 10083 | relax_end (); |
f5040a92 | 10084 | } |
4d7206a2 | 10085 | else |
f5040a92 | 10086 | { |
67c0d1eb RS |
10087 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10088 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
10089 | } |
10090 | } | |
0a44bf69 | 10091 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 10092 | { |
67c0d1eb | 10093 | int gpdelay; |
9117d219 NC |
10094 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
10095 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 10096 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
10097 | |
10098 | /* This is the large GOT case. If this is a reference to an | |
10099 | external symbol, and there is no constant, we want | |
10100 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10101 | addu $tempreg,$tempreg,$gp | |
10102 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 10103 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
10104 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
10105 | addu $tempreg,$tempreg,$gp | |
10106 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
10107 | For a local symbol, we want |
10108 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10109 | nop | |
10110 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
10111 | ||
10112 | If we have a small constant, and this is a reference to | |
10113 | an external symbol, we want | |
10114 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10115 | addu $tempreg,$tempreg,$gp | |
10116 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10117 | nop | |
10118 | addiu $tempreg,$tempreg,<constant> | |
10119 | For a local symbol, we want | |
10120 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10121 | nop | |
10122 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
10123 | ||
10124 | If we have a large constant, and this is a reference to | |
10125 | an external symbol, we want | |
10126 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10127 | addu $tempreg,$tempreg,$gp | |
10128 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10129 | lui $at,<hiconstant> | |
10130 | addiu $at,$at,<loconstant> | |
10131 | addu $tempreg,$tempreg,$at | |
10132 | For a local symbol, we want | |
10133 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10134 | lui $at,<hiconstant> | |
10135 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
10136 | addu $tempreg,$tempreg,$at | |
f5040a92 | 10137 | */ |
438c16b8 | 10138 | |
252b5132 RH |
10139 | expr1.X_add_number = offset_expr.X_add_number; |
10140 | offset_expr.X_add_number = 0; | |
4d7206a2 | 10141 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 10142 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
10143 | if (expr1.X_add_number == 0 && breg == 0 |
10144 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
10145 | { |
10146 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
10147 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
10148 | } | |
df58fc94 | 10149 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 10150 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10151 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 10152 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 10153 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
10154 | if (expr1.X_add_number == 0) |
10155 | { | |
67c0d1eb | 10156 | if (breg != 0) |
252b5132 RH |
10157 | { |
10158 | /* We're going to put in an addu instruction using | |
10159 | tempreg, so we may as well insert the nop right | |
10160 | now. */ | |
269137b2 | 10161 | load_delay_nop (); |
252b5132 | 10162 | } |
252b5132 RH |
10163 | } |
10164 | else if (expr1.X_add_number >= -0x8000 | |
10165 | && expr1.X_add_number < 0x8000) | |
10166 | { | |
269137b2 | 10167 | load_delay_nop (); |
67c0d1eb | 10168 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 10169 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
10170 | } |
10171 | else | |
10172 | { | |
c0ebe874 RS |
10173 | unsigned int dreg; |
10174 | ||
252b5132 RH |
10175 | /* If we are going to add in a base register, and the |
10176 | target register and the base register are the same, | |
10177 | then we are using AT as a temporary register. Since | |
10178 | we want to load the constant into AT, we add our | |
10179 | current AT (from the global offset table) and the | |
10180 | register into the register now, and pretend we were | |
10181 | not using a base register. */ | |
c0ebe874 | 10182 | if (breg != op[0]) |
67c0d1eb | 10183 | dreg = tempreg; |
252b5132 RH |
10184 | else |
10185 | { | |
9c2799c2 | 10186 | gas_assert (tempreg == AT); |
269137b2 | 10187 | load_delay_nop (); |
67c0d1eb | 10188 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10189 | op[0], AT, breg); |
10190 | dreg = op[0]; | |
252b5132 RH |
10191 | } |
10192 | ||
f6a22291 | 10193 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 10194 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 10195 | |
252b5132 RH |
10196 | used_at = 1; |
10197 | } | |
43c0598f | 10198 | offset_expr.X_add_number = SEXT_16BIT (expr1.X_add_number); |
4d7206a2 | 10199 | relax_switch (); |
252b5132 | 10200 | |
67c0d1eb | 10201 | if (gpdelay) |
252b5132 RH |
10202 | { |
10203 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 10204 | the first instruction on the main stream does not. */ |
67c0d1eb | 10205 | macro_build (NULL, "nop", ""); |
252b5132 | 10206 | } |
ed6fb7bd | 10207 | |
67c0d1eb RS |
10208 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10209 | local_reloc_type, mips_gp_register); | |
f5040a92 | 10210 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
10211 | && expr1.X_add_number < 0x8000) |
10212 | { | |
269137b2 | 10213 | load_delay_nop (); |
67c0d1eb RS |
10214 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
10215 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 10216 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
10217 | register, the external symbol case ended with a load, |
10218 | so if the symbol turns out to not be external, and | |
10219 | the next instruction uses tempreg, an unnecessary nop | |
10220 | will be inserted. */ | |
252b5132 RH |
10221 | } |
10222 | else | |
10223 | { | |
c0ebe874 | 10224 | if (breg == op[0]) |
252b5132 RH |
10225 | { |
10226 | /* We must add in the base register now, as in the | |
f5040a92 | 10227 | external symbol case. */ |
9c2799c2 | 10228 | gas_assert (tempreg == AT); |
269137b2 | 10229 | load_delay_nop (); |
67c0d1eb | 10230 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10231 | op[0], AT, breg); |
10232 | tempreg = op[0]; | |
252b5132 | 10233 | /* We set breg to 0 because we have arranged to add |
f5040a92 | 10234 | it in in both cases. */ |
252b5132 RH |
10235 | breg = 0; |
10236 | } | |
10237 | ||
67c0d1eb RS |
10238 | macro_build_lui (&expr1, AT); |
10239 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 10240 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 10241 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10242 | tempreg, tempreg, AT); |
8fc2e39e | 10243 | used_at = 1; |
252b5132 | 10244 | } |
4d7206a2 | 10245 | relax_end (); |
252b5132 | 10246 | } |
0a44bf69 | 10247 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 10248 | { |
f5040a92 AO |
10249 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
10250 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 10251 | int add_breg_early = 0; |
f5040a92 AO |
10252 | |
10253 | /* This is the large GOT case. If this is a reference to an | |
10254 | external symbol, and there is no constant, we want | |
10255 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10256 | add $tempreg,$tempreg,$gp | |
10257 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 10258 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
10259 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
10260 | add $tempreg,$tempreg,$gp | |
10261 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
10262 | ||
10263 | If we have a small constant, and this is a reference to | |
10264 | an external symbol, we want | |
10265 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10266 | add $tempreg,$tempreg,$gp | |
10267 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10268 | addi $tempreg,$tempreg,<constant> | |
10269 | ||
10270 | If we have a large constant, and this is a reference to | |
10271 | an external symbol, we want | |
10272 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
10273 | addu $tempreg,$tempreg,$gp | |
10274 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
10275 | lui $at,<hiconstant> | |
10276 | addi $at,$at,<loconstant> | |
10277 | add $tempreg,$tempreg,$at | |
10278 | ||
10279 | If we have NewABI, and we know it's a local symbol, we want | |
10280 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
10281 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
10282 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
10283 | ||
4d7206a2 | 10284 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 10285 | |
4d7206a2 | 10286 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
10287 | offset_expr.X_add_number = 0; |
10288 | ||
1abe91b1 MR |
10289 | if (expr1.X_add_number == 0 && breg == 0 |
10290 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
10291 | { |
10292 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
10293 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
10294 | } | |
df58fc94 | 10295 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 10296 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 10297 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
10298 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10299 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
10300 | |
10301 | if (expr1.X_add_number == 0) | |
4d7206a2 | 10302 | ; |
f5040a92 AO |
10303 | else if (expr1.X_add_number >= -0x8000 |
10304 | && expr1.X_add_number < 0x8000) | |
10305 | { | |
67c0d1eb | 10306 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 10307 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 10308 | } |
ecd13cd3 | 10309 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 10310 | { |
c0ebe874 RS |
10311 | unsigned int dreg; |
10312 | ||
f5040a92 AO |
10313 | /* If we are going to add in a base register, and the |
10314 | target register and the base register are the same, | |
10315 | then we are using AT as a temporary register. Since | |
10316 | we want to load the constant into AT, we add our | |
10317 | current AT (from the global offset table) and the | |
10318 | register into the register now, and pretend we were | |
10319 | not using a base register. */ | |
c0ebe874 | 10320 | if (breg != op[0]) |
f5040a92 AO |
10321 | dreg = tempreg; |
10322 | else | |
10323 | { | |
9c2799c2 | 10324 | gas_assert (tempreg == AT); |
67c0d1eb | 10325 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 RS |
10326 | op[0], AT, breg); |
10327 | dreg = op[0]; | |
67c0d1eb | 10328 | add_breg_early = 1; |
f5040a92 AO |
10329 | } |
10330 | ||
f6a22291 | 10331 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 10332 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 10333 | |
f5040a92 AO |
10334 | used_at = 1; |
10335 | } | |
10336 | else | |
10337 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
10338 | ||
4d7206a2 | 10339 | relax_switch (); |
f5040a92 | 10340 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
10341 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
10342 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
10343 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
10344 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
10345 | if (add_breg_early) | |
f5040a92 | 10346 | { |
67c0d1eb | 10347 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
c0ebe874 | 10348 | op[0], tempreg, breg); |
f5040a92 | 10349 | breg = 0; |
c0ebe874 | 10350 | tempreg = op[0]; |
f5040a92 | 10351 | } |
4d7206a2 | 10352 | relax_end (); |
f5040a92 | 10353 | } |
252b5132 RH |
10354 | else |
10355 | abort (); | |
10356 | ||
10357 | if (breg != 0) | |
c0ebe874 | 10358 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", op[0], tempreg, breg); |
252b5132 RH |
10359 | break; |
10360 | ||
52b6b6b9 | 10361 | case M_MSGSND: |
df58fc94 | 10362 | gas_assert (!mips_opts.micromips); |
c0ebe874 | 10363 | macro_build (NULL, "c2", "C", (op[0] << 16) | 0x01); |
c7af4273 | 10364 | break; |
52b6b6b9 JM |
10365 | |
10366 | case M_MSGLD: | |
df58fc94 | 10367 | gas_assert (!mips_opts.micromips); |
c8276761 | 10368 | macro_build (NULL, "c2", "C", 0x02); |
c7af4273 | 10369 | break; |
52b6b6b9 JM |
10370 | |
10371 | case M_MSGLD_T: | |
df58fc94 | 10372 | gas_assert (!mips_opts.micromips); |
c0ebe874 | 10373 | macro_build (NULL, "c2", "C", (op[0] << 16) | 0x02); |
c7af4273 | 10374 | break; |
52b6b6b9 JM |
10375 | |
10376 | case M_MSGWAIT: | |
df58fc94 | 10377 | gas_assert (!mips_opts.micromips); |
52b6b6b9 | 10378 | macro_build (NULL, "c2", "C", 3); |
c7af4273 | 10379 | break; |
52b6b6b9 JM |
10380 | |
10381 | case M_MSGWAIT_T: | |
df58fc94 | 10382 | gas_assert (!mips_opts.micromips); |
c0ebe874 | 10383 | macro_build (NULL, "c2", "C", (op[0] << 16) | 0x03); |
c7af4273 | 10384 | break; |
52b6b6b9 | 10385 | |
252b5132 RH |
10386 | case M_J_A: |
10387 | /* The j instruction may not be used in PIC code, since it | |
10388 | requires an absolute address. We convert it to a b | |
10389 | instruction. */ | |
10390 | if (mips_pic == NO_PIC) | |
67c0d1eb | 10391 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 10392 | else |
67c0d1eb | 10393 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 10394 | break; |
252b5132 RH |
10395 | |
10396 | /* The jal instructions must be handled as macros because when | |
10397 | generating PIC code they expand to multi-instruction | |
10398 | sequences. Normally they are simple instructions. */ | |
df58fc94 | 10399 | case M_JALS_1: |
c0ebe874 RS |
10400 | op[1] = op[0]; |
10401 | op[0] = RA; | |
df58fc94 RS |
10402 | /* Fall through. */ |
10403 | case M_JALS_2: | |
10404 | gas_assert (mips_opts.micromips); | |
833794fc MR |
10405 | if (mips_opts.insn32) |
10406 | { | |
1661c76c | 10407 | as_bad (_("opcode not supported in the `insn32' mode `%s'"), str); |
833794fc MR |
10408 | break; |
10409 | } | |
df58fc94 RS |
10410 | jals = 1; |
10411 | goto jal; | |
252b5132 | 10412 | case M_JAL_1: |
c0ebe874 RS |
10413 | op[1] = op[0]; |
10414 | op[0] = RA; | |
252b5132 RH |
10415 | /* Fall through. */ |
10416 | case M_JAL_2: | |
df58fc94 | 10417 | jal: |
3e722fb5 | 10418 | if (mips_pic == NO_PIC) |
df58fc94 RS |
10419 | { |
10420 | s = jals ? "jalrs" : "jalr"; | |
e64af278 | 10421 | if (mips_opts.micromips |
833794fc | 10422 | && !mips_opts.insn32 |
c0ebe874 | 10423 | && op[0] == RA |
e64af278 | 10424 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
c0ebe874 | 10425 | macro_build (NULL, s, "mj", op[1]); |
df58fc94 | 10426 | else |
c0ebe874 | 10427 | macro_build (NULL, s, JALR_FMT, op[0], op[1]); |
df58fc94 | 10428 | } |
0a44bf69 | 10429 | else |
252b5132 | 10430 | { |
df58fc94 RS |
10431 | int cprestore = (mips_pic == SVR4_PIC && !HAVE_NEWABI |
10432 | && mips_cprestore_offset >= 0); | |
10433 | ||
c0ebe874 | 10434 | if (op[1] != PIC_CALL_REG) |
252b5132 | 10435 | as_warn (_("MIPS PIC call to register other than $25")); |
bdaaa2e1 | 10436 | |
833794fc MR |
10437 | s = ((mips_opts.micromips |
10438 | && !mips_opts.insn32 | |
10439 | && (!mips_opts.noreorder || cprestore)) | |
df58fc94 | 10440 | ? "jalrs" : "jalr"); |
e64af278 | 10441 | if (mips_opts.micromips |
833794fc | 10442 | && !mips_opts.insn32 |
c0ebe874 | 10443 | && op[0] == RA |
e64af278 | 10444 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) |
c0ebe874 | 10445 | macro_build (NULL, s, "mj", op[1]); |
df58fc94 | 10446 | else |
c0ebe874 | 10447 | macro_build (NULL, s, JALR_FMT, op[0], op[1]); |
0a44bf69 | 10448 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 10449 | { |
6478892d | 10450 | if (mips_cprestore_offset < 0) |
1661c76c | 10451 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
6478892d TS |
10452 | else |
10453 | { | |
90ecf173 | 10454 | if (!mips_frame_reg_valid) |
7a621144 | 10455 | { |
1661c76c | 10456 | as_warn (_("no .frame pseudo-op used in PIC code")); |
7a621144 DJ |
10457 | /* Quiet this warning. */ |
10458 | mips_frame_reg_valid = 1; | |
10459 | } | |
90ecf173 | 10460 | if (!mips_cprestore_valid) |
7a621144 | 10461 | { |
1661c76c | 10462 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
7a621144 DJ |
10463 | /* Quiet this warning. */ |
10464 | mips_cprestore_valid = 1; | |
10465 | } | |
d3fca0b5 MR |
10466 | if (mips_opts.noreorder) |
10467 | macro_build (NULL, "nop", ""); | |
6478892d | 10468 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 10469 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 10470 | mips_gp_register, |
256ab948 TS |
10471 | mips_frame_reg, |
10472 | HAVE_64BIT_ADDRESSES); | |
6478892d | 10473 | } |
252b5132 RH |
10474 | } |
10475 | } | |
252b5132 | 10476 | |
8fc2e39e | 10477 | break; |
252b5132 | 10478 | |
df58fc94 RS |
10479 | case M_JALS_A: |
10480 | gas_assert (mips_opts.micromips); | |
833794fc MR |
10481 | if (mips_opts.insn32) |
10482 | { | |
1661c76c | 10483 | as_bad (_("opcode not supported in the `insn32' mode `%s'"), str); |
833794fc MR |
10484 | break; |
10485 | } | |
df58fc94 RS |
10486 | jals = 1; |
10487 | /* Fall through. */ | |
252b5132 RH |
10488 | case M_JAL_A: |
10489 | if (mips_pic == NO_PIC) | |
df58fc94 | 10490 | macro_build (&offset_expr, jals ? "jals" : "jal", "a"); |
252b5132 RH |
10491 | else if (mips_pic == SVR4_PIC) |
10492 | { | |
10493 | /* If this is a reference to an external symbol, and we are | |
10494 | using a small GOT, we want | |
10495 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
10496 | nop | |
f9419b05 | 10497 | jalr $ra,$25 |
252b5132 RH |
10498 | nop |
10499 | lw $gp,cprestore($sp) | |
10500 | The cprestore value is set using the .cprestore | |
10501 | pseudo-op. If we are using a big GOT, we want | |
10502 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
10503 | addu $25,$25,$gp | |
10504 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
10505 | nop | |
f9419b05 | 10506 | jalr $ra,$25 |
252b5132 RH |
10507 | nop |
10508 | lw $gp,cprestore($sp) | |
10509 | If the symbol is not external, we want | |
10510 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
10511 | nop | |
10512 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 10513 | jalr $ra,$25 |
252b5132 | 10514 | nop |
438c16b8 | 10515 | lw $gp,cprestore($sp) |
f5040a92 AO |
10516 | |
10517 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
10518 | sequences above, minus nops, unless the symbol is local, | |
10519 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
10520 | GOT_DISP. */ | |
438c16b8 | 10521 | if (HAVE_NEWABI) |
252b5132 | 10522 | { |
90ecf173 | 10523 | if (!mips_big_got) |
f5040a92 | 10524 | { |
4d7206a2 | 10525 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
10526 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10527 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 10528 | mips_gp_register); |
4d7206a2 | 10529 | relax_switch (); |
67c0d1eb RS |
10530 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10531 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
10532 | mips_gp_register); |
10533 | relax_end (); | |
f5040a92 AO |
10534 | } |
10535 | else | |
10536 | { | |
4d7206a2 | 10537 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 10538 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
10539 | BFD_RELOC_MIPS_CALL_HI16); |
10540 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
10541 | PIC_CALL_REG, mips_gp_register); | |
10542 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
10543 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
10544 | PIC_CALL_REG); | |
4d7206a2 | 10545 | relax_switch (); |
67c0d1eb RS |
10546 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10547 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
10548 | mips_gp_register); | |
10549 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
10550 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 10551 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 10552 | relax_end (); |
f5040a92 | 10553 | } |
684022ea | 10554 | |
df58fc94 | 10555 | macro_build_jalr (&offset_expr, 0); |
252b5132 RH |
10556 | } |
10557 | else | |
10558 | { | |
4d7206a2 | 10559 | relax_start (offset_expr.X_add_symbol); |
90ecf173 | 10560 | if (!mips_big_got) |
438c16b8 | 10561 | { |
67c0d1eb RS |
10562 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10563 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 10564 | mips_gp_register); |
269137b2 | 10565 | load_delay_nop (); |
4d7206a2 | 10566 | relax_switch (); |
438c16b8 | 10567 | } |
252b5132 | 10568 | else |
252b5132 | 10569 | { |
67c0d1eb RS |
10570 | int gpdelay; |
10571 | ||
10572 | gpdelay = reg_needs_delay (mips_gp_register); | |
df58fc94 | 10573 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
10574 | BFD_RELOC_MIPS_CALL_HI16); |
10575 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
10576 | PIC_CALL_REG, mips_gp_register); | |
10577 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
10578 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
10579 | PIC_CALL_REG); | |
269137b2 | 10580 | load_delay_nop (); |
4d7206a2 | 10581 | relax_switch (); |
67c0d1eb RS |
10582 | if (gpdelay) |
10583 | macro_build (NULL, "nop", ""); | |
252b5132 | 10584 | } |
67c0d1eb RS |
10585 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
10586 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 10587 | mips_gp_register); |
269137b2 | 10588 | load_delay_nop (); |
67c0d1eb RS |
10589 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
10590 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 10591 | relax_end (); |
df58fc94 | 10592 | macro_build_jalr (&offset_expr, mips_cprestore_offset >= 0); |
438c16b8 | 10593 | |
6478892d | 10594 | if (mips_cprestore_offset < 0) |
1661c76c | 10595 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
6478892d TS |
10596 | else |
10597 | { | |
90ecf173 | 10598 | if (!mips_frame_reg_valid) |
7a621144 | 10599 | { |
1661c76c | 10600 | as_warn (_("no .frame pseudo-op used in PIC code")); |
7a621144 DJ |
10601 | /* Quiet this warning. */ |
10602 | mips_frame_reg_valid = 1; | |
10603 | } | |
90ecf173 | 10604 | if (!mips_cprestore_valid) |
7a621144 | 10605 | { |
1661c76c | 10606 | as_warn (_("no .cprestore pseudo-op used in PIC code")); |
7a621144 DJ |
10607 | /* Quiet this warning. */ |
10608 | mips_cprestore_valid = 1; | |
10609 | } | |
6478892d | 10610 | if (mips_opts.noreorder) |
67c0d1eb | 10611 | macro_build (NULL, "nop", ""); |
6478892d | 10612 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 10613 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 10614 | mips_gp_register, |
256ab948 TS |
10615 | mips_frame_reg, |
10616 | HAVE_64BIT_ADDRESSES); | |
6478892d | 10617 | } |
252b5132 RH |
10618 | } |
10619 | } | |
0a44bf69 | 10620 | else if (mips_pic == VXWORKS_PIC) |
1661c76c | 10621 | as_bad (_("non-PIC jump used in PIC library")); |
252b5132 RH |
10622 | else |
10623 | abort (); | |
10624 | ||
8fc2e39e | 10625 | break; |
252b5132 | 10626 | |
7f3c4072 | 10627 | case M_LBUE_AB: |
7f3c4072 CM |
10628 | s = "lbue"; |
10629 | fmt = "t,+j(b)"; | |
10630 | offbits = 9; | |
10631 | goto ld_st; | |
10632 | case M_LHUE_AB: | |
7f3c4072 CM |
10633 | s = "lhue"; |
10634 | fmt = "t,+j(b)"; | |
10635 | offbits = 9; | |
10636 | goto ld_st; | |
10637 | case M_LBE_AB: | |
7f3c4072 CM |
10638 | s = "lbe"; |
10639 | fmt = "t,+j(b)"; | |
10640 | offbits = 9; | |
10641 | goto ld_st; | |
10642 | case M_LHE_AB: | |
7f3c4072 CM |
10643 | s = "lhe"; |
10644 | fmt = "t,+j(b)"; | |
10645 | offbits = 9; | |
10646 | goto ld_st; | |
10647 | case M_LLE_AB: | |
7f3c4072 CM |
10648 | s = "lle"; |
10649 | fmt = "t,+j(b)"; | |
10650 | offbits = 9; | |
10651 | goto ld_st; | |
10652 | case M_LWE_AB: | |
7f3c4072 CM |
10653 | s = "lwe"; |
10654 | fmt = "t,+j(b)"; | |
10655 | offbits = 9; | |
10656 | goto ld_st; | |
10657 | case M_LWLE_AB: | |
7f3c4072 CM |
10658 | s = "lwle"; |
10659 | fmt = "t,+j(b)"; | |
10660 | offbits = 9; | |
10661 | goto ld_st; | |
10662 | case M_LWRE_AB: | |
7f3c4072 CM |
10663 | s = "lwre"; |
10664 | fmt = "t,+j(b)"; | |
10665 | offbits = 9; | |
10666 | goto ld_st; | |
10667 | case M_SBE_AB: | |
7f3c4072 CM |
10668 | s = "sbe"; |
10669 | fmt = "t,+j(b)"; | |
10670 | offbits = 9; | |
10671 | goto ld_st; | |
10672 | case M_SCE_AB: | |
7f3c4072 CM |
10673 | s = "sce"; |
10674 | fmt = "t,+j(b)"; | |
10675 | offbits = 9; | |
10676 | goto ld_st; | |
10677 | case M_SHE_AB: | |
7f3c4072 CM |
10678 | s = "she"; |
10679 | fmt = "t,+j(b)"; | |
10680 | offbits = 9; | |
10681 | goto ld_st; | |
10682 | case M_SWE_AB: | |
7f3c4072 CM |
10683 | s = "swe"; |
10684 | fmt = "t,+j(b)"; | |
10685 | offbits = 9; | |
10686 | goto ld_st; | |
10687 | case M_SWLE_AB: | |
7f3c4072 CM |
10688 | s = "swle"; |
10689 | fmt = "t,+j(b)"; | |
10690 | offbits = 9; | |
10691 | goto ld_st; | |
10692 | case M_SWRE_AB: | |
7f3c4072 CM |
10693 | s = "swre"; |
10694 | fmt = "t,+j(b)"; | |
10695 | offbits = 9; | |
10696 | goto ld_st; | |
dec0624d | 10697 | case M_ACLR_AB: |
dec0624d | 10698 | s = "aclr"; |
dec0624d | 10699 | fmt = "\\,~(b)"; |
7f3c4072 | 10700 | offbits = 12; |
dec0624d MR |
10701 | goto ld_st; |
10702 | case M_ASET_AB: | |
dec0624d | 10703 | s = "aset"; |
dec0624d | 10704 | fmt = "\\,~(b)"; |
7f3c4072 | 10705 | offbits = 12; |
dec0624d | 10706 | goto ld_st; |
252b5132 RH |
10707 | case M_LB_AB: |
10708 | s = "lb"; | |
df58fc94 | 10709 | fmt = "t,o(b)"; |
252b5132 RH |
10710 | goto ld; |
10711 | case M_LBU_AB: | |
10712 | s = "lbu"; | |
df58fc94 | 10713 | fmt = "t,o(b)"; |
252b5132 RH |
10714 | goto ld; |
10715 | case M_LH_AB: | |
10716 | s = "lh"; | |
df58fc94 | 10717 | fmt = "t,o(b)"; |
252b5132 RH |
10718 | goto ld; |
10719 | case M_LHU_AB: | |
10720 | s = "lhu"; | |
df58fc94 | 10721 | fmt = "t,o(b)"; |
252b5132 RH |
10722 | goto ld; |
10723 | case M_LW_AB: | |
10724 | s = "lw"; | |
df58fc94 | 10725 | fmt = "t,o(b)"; |
252b5132 RH |
10726 | goto ld; |
10727 | case M_LWC0_AB: | |
df58fc94 | 10728 | gas_assert (!mips_opts.micromips); |
252b5132 | 10729 | s = "lwc0"; |
df58fc94 | 10730 | fmt = "E,o(b)"; |
bdaaa2e1 | 10731 | /* Itbl support may require additional care here. */ |
252b5132 | 10732 | coproc = 1; |
df58fc94 | 10733 | goto ld_st; |
252b5132 RH |
10734 | case M_LWC1_AB: |
10735 | s = "lwc1"; | |
df58fc94 | 10736 | fmt = "T,o(b)"; |
bdaaa2e1 | 10737 | /* Itbl support may require additional care here. */ |
252b5132 | 10738 | coproc = 1; |
df58fc94 | 10739 | goto ld_st; |
252b5132 RH |
10740 | case M_LWC2_AB: |
10741 | s = "lwc2"; | |
df58fc94 | 10742 | fmt = COP12_FMT; |
7f3c4072 | 10743 | offbits = (mips_opts.micromips ? 12 : 16); |
bdaaa2e1 | 10744 | /* Itbl support may require additional care here. */ |
252b5132 | 10745 | coproc = 1; |
df58fc94 | 10746 | goto ld_st; |
252b5132 | 10747 | case M_LWC3_AB: |
df58fc94 | 10748 | gas_assert (!mips_opts.micromips); |
252b5132 | 10749 | s = "lwc3"; |
df58fc94 | 10750 | fmt = "E,o(b)"; |
bdaaa2e1 | 10751 | /* Itbl support may require additional care here. */ |
252b5132 | 10752 | coproc = 1; |
df58fc94 | 10753 | goto ld_st; |
252b5132 RH |
10754 | case M_LWL_AB: |
10755 | s = "lwl"; | |
df58fc94 | 10756 | fmt = MEM12_FMT; |
7f3c4072 | 10757 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10758 | goto ld_st; |
252b5132 RH |
10759 | case M_LWR_AB: |
10760 | s = "lwr"; | |
df58fc94 | 10761 | fmt = MEM12_FMT; |
7f3c4072 | 10762 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10763 | goto ld_st; |
252b5132 | 10764 | case M_LDC1_AB: |
252b5132 | 10765 | s = "ldc1"; |
df58fc94 | 10766 | fmt = "T,o(b)"; |
bdaaa2e1 | 10767 | /* Itbl support may require additional care here. */ |
252b5132 | 10768 | coproc = 1; |
df58fc94 | 10769 | goto ld_st; |
252b5132 RH |
10770 | case M_LDC2_AB: |
10771 | s = "ldc2"; | |
df58fc94 | 10772 | fmt = COP12_FMT; |
7f3c4072 | 10773 | offbits = (mips_opts.micromips ? 12 : 16); |
bdaaa2e1 | 10774 | /* Itbl support may require additional care here. */ |
252b5132 | 10775 | coproc = 1; |
df58fc94 | 10776 | goto ld_st; |
c77c0862 | 10777 | case M_LQC2_AB: |
c77c0862 | 10778 | s = "lqc2"; |
14daeee3 | 10779 | fmt = "+7,o(b)"; |
c77c0862 RS |
10780 | /* Itbl support may require additional care here. */ |
10781 | coproc = 1; | |
10782 | goto ld_st; | |
252b5132 RH |
10783 | case M_LDC3_AB: |
10784 | s = "ldc3"; | |
df58fc94 | 10785 | fmt = "E,o(b)"; |
bdaaa2e1 | 10786 | /* Itbl support may require additional care here. */ |
252b5132 | 10787 | coproc = 1; |
df58fc94 | 10788 | goto ld_st; |
252b5132 RH |
10789 | case M_LDL_AB: |
10790 | s = "ldl"; | |
df58fc94 | 10791 | fmt = MEM12_FMT; |
7f3c4072 | 10792 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10793 | goto ld_st; |
252b5132 RH |
10794 | case M_LDR_AB: |
10795 | s = "ldr"; | |
df58fc94 | 10796 | fmt = MEM12_FMT; |
7f3c4072 | 10797 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10798 | goto ld_st; |
252b5132 RH |
10799 | case M_LL_AB: |
10800 | s = "ll"; | |
df58fc94 | 10801 | fmt = MEM12_FMT; |
7f3c4072 | 10802 | offbits = (mips_opts.micromips ? 12 : 16); |
252b5132 RH |
10803 | goto ld; |
10804 | case M_LLD_AB: | |
10805 | s = "lld"; | |
df58fc94 | 10806 | fmt = MEM12_FMT; |
7f3c4072 | 10807 | offbits = (mips_opts.micromips ? 12 : 16); |
252b5132 RH |
10808 | goto ld; |
10809 | case M_LWU_AB: | |
10810 | s = "lwu"; | |
df58fc94 | 10811 | fmt = MEM12_FMT; |
7f3c4072 | 10812 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
10813 | goto ld; |
10814 | case M_LWP_AB: | |
df58fc94 RS |
10815 | gas_assert (mips_opts.micromips); |
10816 | s = "lwp"; | |
10817 | fmt = "t,~(b)"; | |
7f3c4072 | 10818 | offbits = 12; |
df58fc94 RS |
10819 | lp = 1; |
10820 | goto ld; | |
10821 | case M_LDP_AB: | |
df58fc94 RS |
10822 | gas_assert (mips_opts.micromips); |
10823 | s = "ldp"; | |
10824 | fmt = "t,~(b)"; | |
7f3c4072 | 10825 | offbits = 12; |
df58fc94 RS |
10826 | lp = 1; |
10827 | goto ld; | |
10828 | case M_LWM_AB: | |
df58fc94 RS |
10829 | gas_assert (mips_opts.micromips); |
10830 | s = "lwm"; | |
10831 | fmt = "n,~(b)"; | |
7f3c4072 | 10832 | offbits = 12; |
df58fc94 RS |
10833 | goto ld_st; |
10834 | case M_LDM_AB: | |
df58fc94 RS |
10835 | gas_assert (mips_opts.micromips); |
10836 | s = "ldm"; | |
10837 | fmt = "n,~(b)"; | |
7f3c4072 | 10838 | offbits = 12; |
df58fc94 RS |
10839 | goto ld_st; |
10840 | ||
252b5132 | 10841 | ld: |
f19ccbda | 10842 | /* We don't want to use $0 as tempreg. */ |
c0ebe874 | 10843 | if (op[2] == op[0] + lp || op[0] + lp == ZERO) |
df58fc94 | 10844 | goto ld_st; |
252b5132 | 10845 | else |
c0ebe874 | 10846 | tempreg = op[0] + lp; |
df58fc94 RS |
10847 | goto ld_noat; |
10848 | ||
252b5132 RH |
10849 | case M_SB_AB: |
10850 | s = "sb"; | |
df58fc94 RS |
10851 | fmt = "t,o(b)"; |
10852 | goto ld_st; | |
252b5132 RH |
10853 | case M_SH_AB: |
10854 | s = "sh"; | |
df58fc94 RS |
10855 | fmt = "t,o(b)"; |
10856 | goto ld_st; | |
252b5132 RH |
10857 | case M_SW_AB: |
10858 | s = "sw"; | |
df58fc94 RS |
10859 | fmt = "t,o(b)"; |
10860 | goto ld_st; | |
252b5132 | 10861 | case M_SWC0_AB: |
df58fc94 | 10862 | gas_assert (!mips_opts.micromips); |
252b5132 | 10863 | s = "swc0"; |
df58fc94 | 10864 | fmt = "E,o(b)"; |
bdaaa2e1 | 10865 | /* Itbl support may require additional care here. */ |
252b5132 | 10866 | coproc = 1; |
df58fc94 | 10867 | goto ld_st; |
252b5132 RH |
10868 | case M_SWC1_AB: |
10869 | s = "swc1"; | |
df58fc94 | 10870 | fmt = "T,o(b)"; |
bdaaa2e1 | 10871 | /* Itbl support may require additional care here. */ |
252b5132 | 10872 | coproc = 1; |
df58fc94 | 10873 | goto ld_st; |
252b5132 RH |
10874 | case M_SWC2_AB: |
10875 | s = "swc2"; | |
df58fc94 | 10876 | fmt = COP12_FMT; |
7f3c4072 | 10877 | offbits = (mips_opts.micromips ? 12 : 16); |
bdaaa2e1 | 10878 | /* Itbl support may require additional care here. */ |
252b5132 | 10879 | coproc = 1; |
df58fc94 | 10880 | goto ld_st; |
252b5132 | 10881 | case M_SWC3_AB: |
df58fc94 | 10882 | gas_assert (!mips_opts.micromips); |
252b5132 | 10883 | s = "swc3"; |
df58fc94 | 10884 | fmt = "E,o(b)"; |
bdaaa2e1 | 10885 | /* Itbl support may require additional care here. */ |
252b5132 | 10886 | coproc = 1; |
df58fc94 | 10887 | goto ld_st; |
252b5132 RH |
10888 | case M_SWL_AB: |
10889 | s = "swl"; | |
df58fc94 | 10890 | fmt = MEM12_FMT; |
7f3c4072 | 10891 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10892 | goto ld_st; |
252b5132 RH |
10893 | case M_SWR_AB: |
10894 | s = "swr"; | |
df58fc94 | 10895 | fmt = MEM12_FMT; |
7f3c4072 | 10896 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10897 | goto ld_st; |
252b5132 RH |
10898 | case M_SC_AB: |
10899 | s = "sc"; | |
df58fc94 | 10900 | fmt = MEM12_FMT; |
7f3c4072 | 10901 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10902 | goto ld_st; |
252b5132 RH |
10903 | case M_SCD_AB: |
10904 | s = "scd"; | |
df58fc94 | 10905 | fmt = MEM12_FMT; |
7f3c4072 | 10906 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10907 | goto ld_st; |
d43b4baf TS |
10908 | case M_CACHE_AB: |
10909 | s = "cache"; | |
df58fc94 | 10910 | fmt = mips_opts.micromips ? "k,~(b)" : "k,o(b)"; |
7f3c4072 CM |
10911 | offbits = (mips_opts.micromips ? 12 : 16); |
10912 | goto ld_st; | |
10913 | case M_CACHEE_AB: | |
7f3c4072 CM |
10914 | s = "cachee"; |
10915 | fmt = "k,+j(b)"; | |
10916 | offbits = 9; | |
df58fc94 | 10917 | goto ld_st; |
3eebd5eb MR |
10918 | case M_PREF_AB: |
10919 | s = "pref"; | |
df58fc94 | 10920 | fmt = !mips_opts.micromips ? "k,o(b)" : "k,~(b)"; |
7f3c4072 CM |
10921 | offbits = (mips_opts.micromips ? 12 : 16); |
10922 | goto ld_st; | |
10923 | case M_PREFE_AB: | |
7f3c4072 CM |
10924 | s = "prefe"; |
10925 | fmt = "k,+j(b)"; | |
10926 | offbits = 9; | |
df58fc94 | 10927 | goto ld_st; |
252b5132 | 10928 | case M_SDC1_AB: |
252b5132 | 10929 | s = "sdc1"; |
df58fc94 | 10930 | fmt = "T,o(b)"; |
252b5132 | 10931 | coproc = 1; |
bdaaa2e1 | 10932 | /* Itbl support may require additional care here. */ |
df58fc94 | 10933 | goto ld_st; |
252b5132 RH |
10934 | case M_SDC2_AB: |
10935 | s = "sdc2"; | |
df58fc94 | 10936 | fmt = COP12_FMT; |
7f3c4072 | 10937 | offbits = (mips_opts.micromips ? 12 : 16); |
c77c0862 RS |
10938 | /* Itbl support may require additional care here. */ |
10939 | coproc = 1; | |
10940 | goto ld_st; | |
10941 | case M_SQC2_AB: | |
c77c0862 | 10942 | s = "sqc2"; |
14daeee3 | 10943 | fmt = "+7,o(b)"; |
bdaaa2e1 | 10944 | /* Itbl support may require additional care here. */ |
252b5132 | 10945 | coproc = 1; |
df58fc94 | 10946 | goto ld_st; |
252b5132 | 10947 | case M_SDC3_AB: |
df58fc94 | 10948 | gas_assert (!mips_opts.micromips); |
252b5132 | 10949 | s = "sdc3"; |
df58fc94 | 10950 | fmt = "E,o(b)"; |
bdaaa2e1 | 10951 | /* Itbl support may require additional care here. */ |
252b5132 | 10952 | coproc = 1; |
df58fc94 | 10953 | goto ld_st; |
252b5132 RH |
10954 | case M_SDL_AB: |
10955 | s = "sdl"; | |
df58fc94 | 10956 | fmt = MEM12_FMT; |
7f3c4072 | 10957 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 | 10958 | goto ld_st; |
252b5132 RH |
10959 | case M_SDR_AB: |
10960 | s = "sdr"; | |
df58fc94 | 10961 | fmt = MEM12_FMT; |
7f3c4072 | 10962 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
10963 | goto ld_st; |
10964 | case M_SWP_AB: | |
df58fc94 RS |
10965 | gas_assert (mips_opts.micromips); |
10966 | s = "swp"; | |
10967 | fmt = "t,~(b)"; | |
7f3c4072 | 10968 | offbits = 12; |
df58fc94 RS |
10969 | goto ld_st; |
10970 | case M_SDP_AB: | |
df58fc94 RS |
10971 | gas_assert (mips_opts.micromips); |
10972 | s = "sdp"; | |
10973 | fmt = "t,~(b)"; | |
7f3c4072 | 10974 | offbits = 12; |
df58fc94 RS |
10975 | goto ld_st; |
10976 | case M_SWM_AB: | |
df58fc94 RS |
10977 | gas_assert (mips_opts.micromips); |
10978 | s = "swm"; | |
10979 | fmt = "n,~(b)"; | |
7f3c4072 | 10980 | offbits = 12; |
df58fc94 RS |
10981 | goto ld_st; |
10982 | case M_SDM_AB: | |
df58fc94 RS |
10983 | gas_assert (mips_opts.micromips); |
10984 | s = "sdm"; | |
10985 | fmt = "n,~(b)"; | |
7f3c4072 | 10986 | offbits = 12; |
df58fc94 RS |
10987 | |
10988 | ld_st: | |
8fc2e39e | 10989 | tempreg = AT; |
df58fc94 | 10990 | ld_noat: |
c0ebe874 | 10991 | breg = op[2]; |
f2ae14a1 RS |
10992 | if (small_offset_p (0, align, 16)) |
10993 | { | |
10994 | /* The first case exists for M_LD_AB and M_SD_AB, which are | |
10995 | macros for o32 but which should act like normal instructions | |
10996 | otherwise. */ | |
10997 | if (offbits == 16) | |
c0ebe874 | 10998 | macro_build (&offset_expr, s, fmt, op[0], -1, offset_reloc[0], |
f2ae14a1 RS |
10999 | offset_reloc[1], offset_reloc[2], breg); |
11000 | else if (small_offset_p (0, align, offbits)) | |
11001 | { | |
11002 | if (offbits == 0) | |
c0ebe874 | 11003 | macro_build (NULL, s, fmt, op[0], breg); |
f2ae14a1 | 11004 | else |
c0ebe874 | 11005 | macro_build (NULL, s, fmt, op[0], |
c8276761 | 11006 | (int) offset_expr.X_add_number, breg); |
f2ae14a1 RS |
11007 | } |
11008 | else | |
11009 | { | |
11010 | if (tempreg == AT) | |
11011 | used_at = 1; | |
11012 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
11013 | tempreg, breg, -1, offset_reloc[0], | |
11014 | offset_reloc[1], offset_reloc[2]); | |
11015 | if (offbits == 0) | |
c0ebe874 | 11016 | macro_build (NULL, s, fmt, op[0], tempreg); |
f2ae14a1 | 11017 | else |
c0ebe874 | 11018 | macro_build (NULL, s, fmt, op[0], 0, tempreg); |
f2ae14a1 RS |
11019 | } |
11020 | break; | |
11021 | } | |
11022 | ||
11023 | if (tempreg == AT) | |
11024 | used_at = 1; | |
11025 | ||
252b5132 RH |
11026 | if (offset_expr.X_op != O_constant |
11027 | && offset_expr.X_op != O_symbol) | |
11028 | { | |
1661c76c | 11029 | as_bad (_("expression too complex")); |
252b5132 RH |
11030 | offset_expr.X_op = O_constant; |
11031 | } | |
11032 | ||
2051e8c4 MR |
11033 | if (HAVE_32BIT_ADDRESSES |
11034 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
11035 | { |
11036 | char value [32]; | |
11037 | ||
11038 | sprintf_vma (value, offset_expr.X_add_number); | |
1661c76c | 11039 | as_bad (_("number (0x%s) larger than 32 bits"), value); |
55e08f71 | 11040 | } |
2051e8c4 | 11041 | |
252b5132 RH |
11042 | /* A constant expression in PIC code can be handled just as it |
11043 | is in non PIC code. */ | |
aed1a261 RS |
11044 | if (offset_expr.X_op == O_constant) |
11045 | { | |
f2ae14a1 RS |
11046 | expr1.X_add_number = offset_high_part (offset_expr.X_add_number, |
11047 | offbits == 0 ? 16 : offbits); | |
11048 | offset_expr.X_add_number -= expr1.X_add_number; | |
df58fc94 | 11049 | |
f2ae14a1 RS |
11050 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
11051 | if (breg != 0) | |
11052 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
11053 | tempreg, tempreg, breg); | |
7f3c4072 | 11054 | if (offbits == 0) |
dd6a37e7 | 11055 | { |
f2ae14a1 | 11056 | if (offset_expr.X_add_number != 0) |
dd6a37e7 | 11057 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
f2ae14a1 | 11058 | "t,r,j", tempreg, tempreg, BFD_RELOC_LO16); |
c0ebe874 | 11059 | macro_build (NULL, s, fmt, op[0], tempreg); |
dd6a37e7 | 11060 | } |
7f3c4072 | 11061 | else if (offbits == 16) |
c0ebe874 | 11062 | macro_build (&offset_expr, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
df58fc94 | 11063 | else |
c0ebe874 | 11064 | macro_build (NULL, s, fmt, op[0], |
c8276761 | 11065 | (int) offset_expr.X_add_number, tempreg); |
df58fc94 | 11066 | } |
7f3c4072 | 11067 | else if (offbits != 16) |
df58fc94 | 11068 | { |
7f3c4072 CM |
11069 | /* The offset field is too narrow to be used for a low-part |
11070 | relocation, so load the whole address into the auxillary | |
f2ae14a1 RS |
11071 | register. */ |
11072 | load_address (tempreg, &offset_expr, &used_at); | |
11073 | if (breg != 0) | |
11074 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
11075 | tempreg, tempreg, breg); | |
7f3c4072 | 11076 | if (offbits == 0) |
c0ebe874 | 11077 | macro_build (NULL, s, fmt, op[0], tempreg); |
dd6a37e7 | 11078 | else |
c0ebe874 | 11079 | macro_build (NULL, s, fmt, op[0], 0, tempreg); |
aed1a261 RS |
11080 | } |
11081 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
11082 | { |
11083 | /* If this is a reference to a GP relative symbol, and there | |
11084 | is no base register, we want | |
c0ebe874 | 11085 | <op> op[0],<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
11086 | Otherwise, if there is no base register, we want |
11087 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
c0ebe874 | 11088 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
252b5132 RH |
11089 | If we have a constant, we need two instructions anyhow, |
11090 | so we always use the latter form. | |
11091 | ||
11092 | If we have a base register, and this is a reference to a | |
11093 | GP relative symbol, we want | |
11094 | addu $tempreg,$breg,$gp | |
c0ebe874 | 11095 | <op> op[0],<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
11096 | Otherwise we want |
11097 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
11098 | addu $tempreg,$tempreg,$breg | |
c0ebe874 | 11099 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 | 11100 | With a constant we always use the latter case. |
76b3015f | 11101 | |
d6bc6245 TS |
11102 | With 64bit address space and no base register and $at usable, |
11103 | we want | |
11104 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11105 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
11106 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11107 | dsll32 $tempreg,0 | |
11108 | daddu $tempreg,$at | |
c0ebe874 | 11109 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 TS |
11110 | If we have a base register, we want |
11111 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11112 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
11113 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11114 | daddu $at,$breg | |
11115 | dsll32 $tempreg,0 | |
11116 | daddu $tempreg,$at | |
c0ebe874 | 11117 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 TS |
11118 | |
11119 | Without $at we can't generate the optimal path for superscalar | |
11120 | processors here since this would require two temporary registers. | |
11121 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11122 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11123 | dsll $tempreg,16 | |
11124 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
11125 | dsll $tempreg,16 | |
c0ebe874 | 11126 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
d6bc6245 TS |
11127 | If we have a base register, we want |
11128 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
11129 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
11130 | dsll $tempreg,16 | |
11131 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
11132 | dsll $tempreg,16 | |
11133 | daddu $tempreg,$tempreg,$breg | |
c0ebe874 | 11134 | <op> op[0],<sym>($tempreg) (BFD_RELOC_LO16) |
6373ee54 | 11135 | |
6caf9ef4 | 11136 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
11137 | the same sequence as in 32bit address space. */ |
11138 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 11139 | { |
aed1a261 | 11140 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
11141 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
11142 | { | |
11143 | relax_start (offset_expr.X_add_symbol); | |
11144 | if (breg == 0) | |
11145 | { | |
c0ebe874 | 11146 | macro_build (&offset_expr, s, fmt, op[0], |
6caf9ef4 TS |
11147 | BFD_RELOC_GPREL16, mips_gp_register); |
11148 | } | |
11149 | else | |
11150 | { | |
11151 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
11152 | tempreg, breg, mips_gp_register); | |
c0ebe874 | 11153 | macro_build (&offset_expr, s, fmt, op[0], |
6caf9ef4 TS |
11154 | BFD_RELOC_GPREL16, tempreg); |
11155 | } | |
11156 | relax_switch (); | |
11157 | } | |
d6bc6245 | 11158 | |
741fe287 | 11159 | if (used_at == 0 && mips_opts.at) |
d6bc6245 | 11160 | { |
df58fc94 | 11161 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb | 11162 | BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 11163 | macro_build (&offset_expr, "lui", LUI_FMT, AT, |
67c0d1eb RS |
11164 | BFD_RELOC_HI16_S); |
11165 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
11166 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 11167 | if (breg != 0) |
67c0d1eb | 11168 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
df58fc94 | 11169 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb | 11170 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
c0ebe874 | 11171 | macro_build (&offset_expr, s, fmt, op[0], BFD_RELOC_LO16, |
67c0d1eb | 11172 | tempreg); |
d6bc6245 TS |
11173 | used_at = 1; |
11174 | } | |
11175 | else | |
11176 | { | |
df58fc94 | 11177 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb RS |
11178 | BFD_RELOC_MIPS_HIGHEST); |
11179 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
11180 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 11181 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb RS |
11182 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, |
11183 | tempreg, BFD_RELOC_HI16_S); | |
df58fc94 | 11184 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
d6bc6245 | 11185 | if (breg != 0) |
67c0d1eb | 11186 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 11187 | tempreg, tempreg, breg); |
c0ebe874 | 11188 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11189 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 11190 | } |
6caf9ef4 TS |
11191 | |
11192 | if (mips_relax.sequence) | |
11193 | relax_end (); | |
8fc2e39e | 11194 | break; |
d6bc6245 | 11195 | } |
256ab948 | 11196 | |
252b5132 RH |
11197 | if (breg == 0) |
11198 | { | |
67c0d1eb | 11199 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 11200 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 11201 | { |
4d7206a2 | 11202 | relax_start (offset_expr.X_add_symbol); |
c0ebe874 | 11203 | macro_build (&offset_expr, s, fmt, op[0], BFD_RELOC_GPREL16, |
67c0d1eb | 11204 | mips_gp_register); |
4d7206a2 | 11205 | relax_switch (); |
252b5132 | 11206 | } |
67c0d1eb | 11207 | macro_build_lui (&offset_expr, tempreg); |
c0ebe874 | 11208 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11209 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
11210 | if (mips_relax.sequence) |
11211 | relax_end (); | |
252b5132 RH |
11212 | } |
11213 | else | |
11214 | { | |
67c0d1eb | 11215 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 11216 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 11217 | { |
4d7206a2 | 11218 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 11219 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11220 | tempreg, breg, mips_gp_register); |
c0ebe874 | 11221 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11222 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 11223 | relax_switch (); |
252b5132 | 11224 | } |
67c0d1eb RS |
11225 | macro_build_lui (&offset_expr, tempreg); |
11226 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 11227 | tempreg, tempreg, breg); |
c0ebe874 | 11228 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11229 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
11230 | if (mips_relax.sequence) |
11231 | relax_end (); | |
252b5132 RH |
11232 | } |
11233 | } | |
0a44bf69 | 11234 | else if (!mips_big_got) |
252b5132 | 11235 | { |
ed6fb7bd | 11236 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 11237 | |
252b5132 RH |
11238 | /* If this is a reference to an external symbol, we want |
11239 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11240 | nop | |
c0ebe874 | 11241 | <op> op[0],0($tempreg) |
252b5132 RH |
11242 | Otherwise we want |
11243 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11244 | nop | |
11245 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
c0ebe874 | 11246 | <op> op[0],0($tempreg) |
f5040a92 AO |
11247 | |
11248 | For NewABI, we want | |
11249 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
c0ebe874 | 11250 | <op> op[0],<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) |
f5040a92 | 11251 | |
252b5132 RH |
11252 | If there is a base register, we add it to $tempreg before |
11253 | the <op>. If there is a constant, we stick it in the | |
11254 | <op> instruction. We don't handle constants larger than | |
11255 | 16 bits, because we have no way to load the upper 16 bits | |
11256 | (actually, we could handle them for the subset of cases | |
11257 | in which we are not using $at). */ | |
9c2799c2 | 11258 | gas_assert (offset_expr.X_op == O_symbol); |
f5040a92 AO |
11259 | if (HAVE_NEWABI) |
11260 | { | |
67c0d1eb RS |
11261 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
11262 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 11263 | if (breg != 0) |
67c0d1eb | 11264 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11265 | tempreg, tempreg, breg); |
c0ebe874 | 11266 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11267 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
11268 | break; |
11269 | } | |
252b5132 RH |
11270 | expr1.X_add_number = offset_expr.X_add_number; |
11271 | offset_expr.X_add_number = 0; | |
11272 | if (expr1.X_add_number < -0x8000 | |
11273 | || expr1.X_add_number >= 0x8000) | |
11274 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
11275 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
11276 | lw_reloc_type, mips_gp_register); | |
269137b2 | 11277 | load_delay_nop (); |
4d7206a2 RS |
11278 | relax_start (offset_expr.X_add_symbol); |
11279 | relax_switch (); | |
67c0d1eb RS |
11280 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
11281 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 11282 | relax_end (); |
252b5132 | 11283 | if (breg != 0) |
67c0d1eb | 11284 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11285 | tempreg, tempreg, breg); |
c0ebe874 | 11286 | macro_build (&expr1, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
252b5132 | 11287 | } |
0a44bf69 | 11288 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 11289 | { |
67c0d1eb | 11290 | int gpdelay; |
252b5132 RH |
11291 | |
11292 | /* If this is a reference to an external symbol, we want | |
11293 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
11294 | addu $tempreg,$tempreg,$gp | |
11295 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
c0ebe874 | 11296 | <op> op[0],0($tempreg) |
252b5132 RH |
11297 | Otherwise we want |
11298 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11299 | nop | |
11300 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
c0ebe874 | 11301 | <op> op[0],0($tempreg) |
252b5132 RH |
11302 | If there is a base register, we add it to $tempreg before |
11303 | the <op>. If there is a constant, we stick it in the | |
11304 | <op> instruction. We don't handle constants larger than | |
11305 | 16 bits, because we have no way to load the upper 16 bits | |
11306 | (actually, we could handle them for the subset of cases | |
f5040a92 | 11307 | in which we are not using $at). */ |
9c2799c2 | 11308 | gas_assert (offset_expr.X_op == O_symbol); |
252b5132 RH |
11309 | expr1.X_add_number = offset_expr.X_add_number; |
11310 | offset_expr.X_add_number = 0; | |
11311 | if (expr1.X_add_number < -0x8000 | |
11312 | || expr1.X_add_number >= 0x8000) | |
11313 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 11314 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 11315 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 11316 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 11317 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
11318 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
11319 | mips_gp_register); | |
11320 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
11321 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 11322 | relax_switch (); |
67c0d1eb RS |
11323 | if (gpdelay) |
11324 | macro_build (NULL, "nop", ""); | |
11325 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
11326 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 11327 | load_delay_nop (); |
67c0d1eb RS |
11328 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
11329 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
11330 | relax_end (); |
11331 | ||
252b5132 | 11332 | if (breg != 0) |
67c0d1eb | 11333 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11334 | tempreg, tempreg, breg); |
c0ebe874 | 11335 | macro_build (&expr1, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
252b5132 | 11336 | } |
0a44bf69 | 11337 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 11338 | { |
f5040a92 AO |
11339 | /* If this is a reference to an external symbol, we want |
11340 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
11341 | add $tempreg,$tempreg,$gp | |
11342 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
c0ebe874 | 11343 | <op> op[0],<ofst>($tempreg) |
f5040a92 AO |
11344 | Otherwise, for local symbols, we want: |
11345 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
c0ebe874 | 11346 | <op> op[0],<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ |
9c2799c2 | 11347 | gas_assert (offset_expr.X_op == O_symbol); |
4d7206a2 | 11348 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
11349 | offset_expr.X_add_number = 0; |
11350 | if (expr1.X_add_number < -0x8000 | |
11351 | || expr1.X_add_number >= 0x8000) | |
11352 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 11353 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 11354 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 11355 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
11356 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
11357 | mips_gp_register); | |
11358 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
11359 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 11360 | if (breg != 0) |
67c0d1eb | 11361 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11362 | tempreg, tempreg, breg); |
c0ebe874 | 11363 | macro_build (&expr1, s, fmt, op[0], BFD_RELOC_LO16, tempreg); |
684022ea | 11364 | |
4d7206a2 | 11365 | relax_switch (); |
f5040a92 | 11366 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
11367 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
11368 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 11369 | if (breg != 0) |
67c0d1eb | 11370 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11371 | tempreg, tempreg, breg); |
c0ebe874 | 11372 | macro_build (&offset_expr, s, fmt, op[0], |
17a2f251 | 11373 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 11374 | relax_end (); |
f5040a92 | 11375 | } |
252b5132 RH |
11376 | else |
11377 | abort (); | |
11378 | ||
252b5132 RH |
11379 | break; |
11380 | ||
833794fc MR |
11381 | case M_JRADDIUSP: |
11382 | gas_assert (mips_opts.micromips); | |
11383 | gas_assert (mips_opts.insn32); | |
11384 | start_noreorder (); | |
11385 | macro_build (NULL, "jr", "s", RA); | |
c0ebe874 | 11386 | expr1.X_add_number = op[0] << 2; |
833794fc MR |
11387 | macro_build (&expr1, "addiu", "t,r,j", SP, SP, BFD_RELOC_LO16); |
11388 | end_noreorder (); | |
11389 | break; | |
11390 | ||
11391 | case M_JRC: | |
11392 | gas_assert (mips_opts.micromips); | |
11393 | gas_assert (mips_opts.insn32); | |
c0ebe874 | 11394 | macro_build (NULL, "jr", "s", op[0]); |
833794fc MR |
11395 | if (mips_opts.noreorder) |
11396 | macro_build (NULL, "nop", ""); | |
11397 | break; | |
11398 | ||
252b5132 RH |
11399 | case M_LI: |
11400 | case M_LI_S: | |
c0ebe874 | 11401 | load_register (op[0], &imm_expr, 0); |
8fc2e39e | 11402 | break; |
252b5132 RH |
11403 | |
11404 | case M_DLI: | |
c0ebe874 | 11405 | load_register (op[0], &imm_expr, 1); |
8fc2e39e | 11406 | break; |
252b5132 RH |
11407 | |
11408 | case M_LI_SS: | |
11409 | if (imm_expr.X_op == O_constant) | |
11410 | { | |
8fc2e39e | 11411 | used_at = 1; |
67c0d1eb | 11412 | load_register (AT, &imm_expr, 0); |
c0ebe874 | 11413 | macro_build (NULL, "mtc1", "t,G", AT, op[0]); |
252b5132 RH |
11414 | break; |
11415 | } | |
11416 | else | |
11417 | { | |
b0e6f033 RS |
11418 | gas_assert (imm_expr.X_op == O_absent |
11419 | && offset_expr.X_op == O_symbol | |
90ecf173 MR |
11420 | && strcmp (segment_name (S_GET_SEGMENT |
11421 | (offset_expr.X_add_symbol)), | |
11422 | ".lit4") == 0 | |
11423 | && offset_expr.X_add_number == 0); | |
c0ebe874 | 11424 | macro_build (&offset_expr, "lwc1", "T,o(b)", op[0], |
17a2f251 | 11425 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 11426 | break; |
252b5132 RH |
11427 | } |
11428 | ||
11429 | case M_LI_D: | |
ca4e0257 RS |
11430 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
11431 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
11432 | order 32 bits of the value and the low order 32 bits are either | |
11433 | zero or in OFFSET_EXPR. */ | |
b0e6f033 | 11434 | if (imm_expr.X_op == O_constant) |
252b5132 | 11435 | { |
ca4e0257 | 11436 | if (HAVE_64BIT_GPRS) |
c0ebe874 | 11437 | load_register (op[0], &imm_expr, 1); |
252b5132 RH |
11438 | else |
11439 | { | |
11440 | int hreg, lreg; | |
11441 | ||
11442 | if (target_big_endian) | |
11443 | { | |
c0ebe874 RS |
11444 | hreg = op[0]; |
11445 | lreg = op[0] + 1; | |
252b5132 RH |
11446 | } |
11447 | else | |
11448 | { | |
c0ebe874 RS |
11449 | hreg = op[0] + 1; |
11450 | lreg = op[0]; | |
252b5132 RH |
11451 | } |
11452 | ||
11453 | if (hreg <= 31) | |
67c0d1eb | 11454 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
11455 | if (lreg <= 31) |
11456 | { | |
11457 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 11458 | move_register (lreg, 0); |
252b5132 RH |
11459 | else |
11460 | { | |
9c2799c2 | 11461 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 11462 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
11463 | } |
11464 | } | |
11465 | } | |
8fc2e39e | 11466 | break; |
252b5132 | 11467 | } |
b0e6f033 | 11468 | gas_assert (imm_expr.X_op == O_absent); |
252b5132 RH |
11469 | |
11470 | /* We know that sym is in the .rdata section. First we get the | |
11471 | upper 16 bits of the address. */ | |
11472 | if (mips_pic == NO_PIC) | |
11473 | { | |
67c0d1eb | 11474 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 11475 | used_at = 1; |
252b5132 | 11476 | } |
0a44bf69 | 11477 | else |
252b5132 | 11478 | { |
67c0d1eb RS |
11479 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
11480 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 11481 | used_at = 1; |
252b5132 | 11482 | } |
bdaaa2e1 | 11483 | |
252b5132 | 11484 | /* Now we load the register(s). */ |
ca4e0257 | 11485 | if (HAVE_64BIT_GPRS) |
8fc2e39e TS |
11486 | { |
11487 | used_at = 1; | |
c0ebe874 RS |
11488 | macro_build (&offset_expr, "ld", "t,o(b)", op[0], |
11489 | BFD_RELOC_LO16, AT); | |
8fc2e39e | 11490 | } |
252b5132 RH |
11491 | else |
11492 | { | |
8fc2e39e | 11493 | used_at = 1; |
c0ebe874 RS |
11494 | macro_build (&offset_expr, "lw", "t,o(b)", op[0], |
11495 | BFD_RELOC_LO16, AT); | |
11496 | if (op[0] != RA) | |
252b5132 RH |
11497 | { |
11498 | /* FIXME: How in the world do we deal with the possible | |
11499 | overflow here? */ | |
11500 | offset_expr.X_add_number += 4; | |
67c0d1eb | 11501 | macro_build (&offset_expr, "lw", "t,o(b)", |
c0ebe874 | 11502 | op[0] + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
11503 | } |
11504 | } | |
252b5132 RH |
11505 | break; |
11506 | ||
11507 | case M_LI_DD: | |
ca4e0257 RS |
11508 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
11509 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
11510 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
11511 | the value and the low order 32 bits are either zero or in | |
11512 | OFFSET_EXPR. */ | |
b0e6f033 | 11513 | if (imm_expr.X_op == O_constant) |
252b5132 | 11514 | { |
8fc2e39e | 11515 | used_at = 1; |
67c0d1eb | 11516 | load_register (AT, &imm_expr, HAVE_64BIT_FPRS); |
ca4e0257 RS |
11517 | if (HAVE_64BIT_FPRS) |
11518 | { | |
9c2799c2 | 11519 | gas_assert (HAVE_64BIT_GPRS); |
c0ebe874 | 11520 | macro_build (NULL, "dmtc1", "t,S", AT, op[0]); |
ca4e0257 | 11521 | } |
252b5132 RH |
11522 | else |
11523 | { | |
c0ebe874 | 11524 | macro_build (NULL, "mtc1", "t,G", AT, op[0] + 1); |
252b5132 | 11525 | if (offset_expr.X_op == O_absent) |
c0ebe874 | 11526 | macro_build (NULL, "mtc1", "t,G", 0, op[0]); |
252b5132 RH |
11527 | else |
11528 | { | |
9c2799c2 | 11529 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 11530 | load_register (AT, &offset_expr, 0); |
c0ebe874 | 11531 | macro_build (NULL, "mtc1", "t,G", AT, op[0]); |
252b5132 RH |
11532 | } |
11533 | } | |
11534 | break; | |
11535 | } | |
11536 | ||
b0e6f033 RS |
11537 | gas_assert (imm_expr.X_op == O_absent |
11538 | && offset_expr.X_op == O_symbol | |
90ecf173 | 11539 | && offset_expr.X_add_number == 0); |
252b5132 RH |
11540 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); |
11541 | if (strcmp (s, ".lit8") == 0) | |
f2ae14a1 | 11542 | { |
c0ebe874 | 11543 | op[2] = mips_gp_register; |
f2ae14a1 RS |
11544 | offset_reloc[0] = BFD_RELOC_MIPS_LITERAL; |
11545 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
11546 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
11547 | } |
11548 | else | |
11549 | { | |
9c2799c2 | 11550 | gas_assert (strcmp (s, RDATA_SECTION_NAME) == 0); |
8fc2e39e | 11551 | used_at = 1; |
0a44bf69 | 11552 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
11553 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
11554 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
11555 | else |
11556 | { | |
11557 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 11558 | macro_build_lui (&offset_expr, AT); |
252b5132 | 11559 | } |
bdaaa2e1 | 11560 | |
c0ebe874 | 11561 | op[2] = AT; |
f2ae14a1 RS |
11562 | offset_reloc[0] = BFD_RELOC_LO16; |
11563 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
11564 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
11565 | } | |
11566 | align = 8; | |
11567 | /* Fall through */ | |
c4a68bea | 11568 | |
252b5132 RH |
11569 | case M_L_DAB: |
11570 | /* | |
11571 | * The MIPS assembler seems to check for X_add_number not | |
11572 | * being double aligned and generating: | |
11573 | * lui at,%hi(foo+1) | |
11574 | * addu at,at,v1 | |
11575 | * addiu at,at,%lo(foo+1) | |
11576 | * lwc1 f2,0(at) | |
11577 | * lwc1 f3,4(at) | |
11578 | * But, the resulting address is the same after relocation so why | |
11579 | * generate the extra instruction? | |
11580 | */ | |
bdaaa2e1 | 11581 | /* Itbl support may require additional care here. */ |
252b5132 | 11582 | coproc = 1; |
df58fc94 | 11583 | fmt = "T,o(b)"; |
0aa27725 | 11584 | if (CPU_HAS_LDC1_SDC1 (mips_opts.arch)) |
252b5132 RH |
11585 | { |
11586 | s = "ldc1"; | |
df58fc94 | 11587 | goto ld_st; |
252b5132 | 11588 | } |
252b5132 | 11589 | s = "lwc1"; |
252b5132 RH |
11590 | goto ldd_std; |
11591 | ||
11592 | case M_S_DAB: | |
df58fc94 RS |
11593 | gas_assert (!mips_opts.micromips); |
11594 | /* Itbl support may require additional care here. */ | |
11595 | coproc = 1; | |
11596 | fmt = "T,o(b)"; | |
0aa27725 | 11597 | if (CPU_HAS_LDC1_SDC1 (mips_opts.arch)) |
252b5132 RH |
11598 | { |
11599 | s = "sdc1"; | |
df58fc94 | 11600 | goto ld_st; |
252b5132 | 11601 | } |
252b5132 | 11602 | s = "swc1"; |
252b5132 RH |
11603 | goto ldd_std; |
11604 | ||
e407c74b NC |
11605 | case M_LQ_AB: |
11606 | fmt = "t,o(b)"; | |
11607 | s = "lq"; | |
11608 | goto ld; | |
11609 | ||
11610 | case M_SQ_AB: | |
11611 | fmt = "t,o(b)"; | |
11612 | s = "sq"; | |
11613 | goto ld_st; | |
11614 | ||
252b5132 | 11615 | case M_LD_AB: |
df58fc94 | 11616 | fmt = "t,o(b)"; |
ca4e0257 | 11617 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
11618 | { |
11619 | s = "ld"; | |
11620 | goto ld; | |
11621 | } | |
252b5132 | 11622 | s = "lw"; |
252b5132 RH |
11623 | goto ldd_std; |
11624 | ||
11625 | case M_SD_AB: | |
df58fc94 | 11626 | fmt = "t,o(b)"; |
ca4e0257 | 11627 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
11628 | { |
11629 | s = "sd"; | |
df58fc94 | 11630 | goto ld_st; |
252b5132 | 11631 | } |
252b5132 | 11632 | s = "sw"; |
252b5132 RH |
11633 | |
11634 | ldd_std: | |
f2ae14a1 RS |
11635 | /* Even on a big endian machine $fn comes before $fn+1. We have |
11636 | to adjust when loading from memory. We set coproc if we must | |
11637 | load $fn+1 first. */ | |
11638 | /* Itbl support may require additional care here. */ | |
11639 | if (!target_big_endian) | |
11640 | coproc = 0; | |
11641 | ||
c0ebe874 | 11642 | breg = op[2]; |
f2ae14a1 RS |
11643 | if (small_offset_p (0, align, 16)) |
11644 | { | |
11645 | ep = &offset_expr; | |
11646 | if (!small_offset_p (4, align, 16)) | |
11647 | { | |
11648 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", AT, breg, | |
11649 | -1, offset_reloc[0], offset_reloc[1], | |
11650 | offset_reloc[2]); | |
11651 | expr1.X_add_number = 0; | |
11652 | ep = &expr1; | |
11653 | breg = AT; | |
11654 | used_at = 1; | |
11655 | offset_reloc[0] = BFD_RELOC_LO16; | |
11656 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
11657 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
11658 | } | |
c0ebe874 | 11659 | if (strcmp (s, "lw") == 0 && op[0] == breg) |
f2ae14a1 RS |
11660 | { |
11661 | ep->X_add_number += 4; | |
c0ebe874 | 11662 | macro_build (ep, s, fmt, op[0] + 1, -1, offset_reloc[0], |
f2ae14a1 RS |
11663 | offset_reloc[1], offset_reloc[2], breg); |
11664 | ep->X_add_number -= 4; | |
c0ebe874 | 11665 | macro_build (ep, s, fmt, op[0], -1, offset_reloc[0], |
f2ae14a1 RS |
11666 | offset_reloc[1], offset_reloc[2], breg); |
11667 | } | |
11668 | else | |
11669 | { | |
c0ebe874 | 11670 | macro_build (ep, s, fmt, coproc ? op[0] + 1 : op[0], -1, |
f2ae14a1 RS |
11671 | offset_reloc[0], offset_reloc[1], offset_reloc[2], |
11672 | breg); | |
11673 | ep->X_add_number += 4; | |
c0ebe874 | 11674 | macro_build (ep, s, fmt, coproc ? op[0] : op[0] + 1, -1, |
f2ae14a1 RS |
11675 | offset_reloc[0], offset_reloc[1], offset_reloc[2], |
11676 | breg); | |
11677 | } | |
11678 | break; | |
11679 | } | |
11680 | ||
252b5132 RH |
11681 | if (offset_expr.X_op != O_symbol |
11682 | && offset_expr.X_op != O_constant) | |
11683 | { | |
1661c76c | 11684 | as_bad (_("expression too complex")); |
252b5132 RH |
11685 | offset_expr.X_op = O_constant; |
11686 | } | |
11687 | ||
2051e8c4 MR |
11688 | if (HAVE_32BIT_ADDRESSES |
11689 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
11690 | { |
11691 | char value [32]; | |
11692 | ||
11693 | sprintf_vma (value, offset_expr.X_add_number); | |
1661c76c | 11694 | as_bad (_("number (0x%s) larger than 32 bits"), value); |
55e08f71 | 11695 | } |
2051e8c4 | 11696 | |
90ecf173 | 11697 | if (mips_pic == NO_PIC || offset_expr.X_op == O_constant) |
252b5132 RH |
11698 | { |
11699 | /* If this is a reference to a GP relative symbol, we want | |
c0ebe874 RS |
11700 | <op> op[0],<sym>($gp) (BFD_RELOC_GPREL16) |
11701 | <op> op[0]+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
11702 | If we have a base register, we use this |
11703 | addu $at,$breg,$gp | |
c0ebe874 RS |
11704 | <op> op[0],<sym>($at) (BFD_RELOC_GPREL16) |
11705 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
11706 | If this is not a GP relative symbol, we want |
11707 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
c0ebe874 RS |
11708 | <op> op[0],<sym>($at) (BFD_RELOC_LO16) |
11709 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_LO16) | |
252b5132 RH |
11710 | If there is a base register, we add it to $at after the |
11711 | lui instruction. If there is a constant, we always use | |
11712 | the last case. */ | |
39a59cf8 MR |
11713 | if (offset_expr.X_op == O_symbol |
11714 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 11715 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 11716 | { |
4d7206a2 | 11717 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
11718 | if (breg == 0) |
11719 | { | |
c9914766 | 11720 | tempreg = mips_gp_register; |
252b5132 RH |
11721 | } |
11722 | else | |
11723 | { | |
67c0d1eb | 11724 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 11725 | AT, breg, mips_gp_register); |
252b5132 | 11726 | tempreg = AT; |
252b5132 RH |
11727 | used_at = 1; |
11728 | } | |
11729 | ||
beae10d5 | 11730 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11731 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
17a2f251 | 11732 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
11733 | offset_expr.X_add_number += 4; |
11734 | ||
11735 | /* Set mips_optimize to 2 to avoid inserting an | |
11736 | undesired nop. */ | |
11737 | hold_mips_optimize = mips_optimize; | |
11738 | mips_optimize = 2; | |
beae10d5 | 11739 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11740 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
17a2f251 | 11741 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
11742 | mips_optimize = hold_mips_optimize; |
11743 | ||
4d7206a2 | 11744 | relax_switch (); |
252b5132 | 11745 | |
0970e49e | 11746 | offset_expr.X_add_number -= 4; |
252b5132 | 11747 | } |
8fc2e39e | 11748 | used_at = 1; |
f2ae14a1 RS |
11749 | if (offset_high_part (offset_expr.X_add_number, 16) |
11750 | != offset_high_part (offset_expr.X_add_number + 4, 16)) | |
11751 | { | |
11752 | load_address (AT, &offset_expr, &used_at); | |
11753 | offset_expr.X_op = O_constant; | |
11754 | offset_expr.X_add_number = 0; | |
11755 | } | |
11756 | else | |
11757 | macro_build_lui (&offset_expr, AT); | |
252b5132 | 11758 | if (breg != 0) |
67c0d1eb | 11759 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 11760 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11761 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
17a2f251 | 11762 | BFD_RELOC_LO16, AT); |
252b5132 RH |
11763 | /* FIXME: How do we handle overflow here? */ |
11764 | offset_expr.X_add_number += 4; | |
beae10d5 | 11765 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11766 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
17a2f251 | 11767 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
11768 | if (mips_relax.sequence) |
11769 | relax_end (); | |
bdaaa2e1 | 11770 | } |
0a44bf69 | 11771 | else if (!mips_big_got) |
252b5132 | 11772 | { |
252b5132 RH |
11773 | /* If this is a reference to an external symbol, we want |
11774 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11775 | nop | |
c0ebe874 RS |
11776 | <op> op[0],0($at) |
11777 | <op> op[0]+1,4($at) | |
252b5132 RH |
11778 | Otherwise we want |
11779 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11780 | nop | |
c0ebe874 RS |
11781 | <op> op[0],<sym>($at) (BFD_RELOC_LO16) |
11782 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_LO16) | |
252b5132 RH |
11783 | If there is a base register we add it to $at before the |
11784 | lwc1 instructions. If there is a constant we include it | |
11785 | in the lwc1 instructions. */ | |
11786 | used_at = 1; | |
11787 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
11788 | if (expr1.X_add_number < -0x8000 |
11789 | || expr1.X_add_number >= 0x8000 - 4) | |
11790 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 11791 | load_got_offset (AT, &offset_expr); |
269137b2 | 11792 | load_delay_nop (); |
252b5132 | 11793 | if (breg != 0) |
67c0d1eb | 11794 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
11795 | |
11796 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
11797 | nop. */ | |
11798 | hold_mips_optimize = mips_optimize; | |
11799 | mips_optimize = 2; | |
4d7206a2 | 11800 | |
beae10d5 | 11801 | /* Itbl support may require additional care here. */ |
4d7206a2 | 11802 | relax_start (offset_expr.X_add_symbol); |
c0ebe874 | 11803 | macro_build (&expr1, s, fmt, coproc ? op[0] + 1 : op[0], |
67c0d1eb | 11804 | BFD_RELOC_LO16, AT); |
4d7206a2 | 11805 | expr1.X_add_number += 4; |
c0ebe874 | 11806 | macro_build (&expr1, s, fmt, coproc ? op[0] : op[0] + 1, |
67c0d1eb | 11807 | BFD_RELOC_LO16, AT); |
4d7206a2 | 11808 | relax_switch (); |
c0ebe874 | 11809 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
67c0d1eb | 11810 | BFD_RELOC_LO16, AT); |
4d7206a2 | 11811 | offset_expr.X_add_number += 4; |
c0ebe874 | 11812 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
67c0d1eb | 11813 | BFD_RELOC_LO16, AT); |
4d7206a2 | 11814 | relax_end (); |
252b5132 | 11815 | |
4d7206a2 | 11816 | mips_optimize = hold_mips_optimize; |
252b5132 | 11817 | } |
0a44bf69 | 11818 | else if (mips_big_got) |
252b5132 | 11819 | { |
67c0d1eb | 11820 | int gpdelay; |
252b5132 RH |
11821 | |
11822 | /* If this is a reference to an external symbol, we want | |
11823 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
11824 | addu $at,$at,$gp | |
11825 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
11826 | nop | |
c0ebe874 RS |
11827 | <op> op[0],0($at) |
11828 | <op> op[0]+1,4($at) | |
252b5132 RH |
11829 | Otherwise we want |
11830 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
11831 | nop | |
c0ebe874 RS |
11832 | <op> op[0],<sym>($at) (BFD_RELOC_LO16) |
11833 | <op> op[0]+1,<sym>+4($at) (BFD_RELOC_LO16) | |
252b5132 RH |
11834 | If there is a base register we add it to $at before the |
11835 | lwc1 instructions. If there is a constant we include it | |
11836 | in the lwc1 instructions. */ | |
11837 | used_at = 1; | |
11838 | expr1.X_add_number = offset_expr.X_add_number; | |
11839 | offset_expr.X_add_number = 0; | |
11840 | if (expr1.X_add_number < -0x8000 | |
11841 | || expr1.X_add_number >= 0x8000 - 4) | |
11842 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 11843 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 11844 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 11845 | macro_build (&offset_expr, "lui", LUI_FMT, |
67c0d1eb RS |
11846 | AT, BFD_RELOC_MIPS_GOT_HI16); |
11847 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 11848 | AT, AT, mips_gp_register); |
67c0d1eb | 11849 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 11850 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 11851 | load_delay_nop (); |
252b5132 | 11852 | if (breg != 0) |
67c0d1eb | 11853 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 11854 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11855 | macro_build (&expr1, s, fmt, coproc ? op[0] + 1 : op[0], |
17a2f251 | 11856 | BFD_RELOC_LO16, AT); |
252b5132 RH |
11857 | expr1.X_add_number += 4; |
11858 | ||
11859 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
11860 | nop. */ | |
11861 | hold_mips_optimize = mips_optimize; | |
11862 | mips_optimize = 2; | |
beae10d5 | 11863 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11864 | macro_build (&expr1, s, fmt, coproc ? op[0] : op[0] + 1, |
17a2f251 | 11865 | BFD_RELOC_LO16, AT); |
252b5132 RH |
11866 | mips_optimize = hold_mips_optimize; |
11867 | expr1.X_add_number -= 4; | |
11868 | ||
4d7206a2 RS |
11869 | relax_switch (); |
11870 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
11871 | if (gpdelay) |
11872 | macro_build (NULL, "nop", ""); | |
11873 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
11874 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 11875 | load_delay_nop (); |
252b5132 | 11876 | if (breg != 0) |
67c0d1eb | 11877 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 11878 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11879 | macro_build (&offset_expr, s, fmt, coproc ? op[0] + 1 : op[0], |
67c0d1eb | 11880 | BFD_RELOC_LO16, AT); |
4d7206a2 | 11881 | offset_expr.X_add_number += 4; |
252b5132 RH |
11882 | |
11883 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
11884 | nop. */ | |
11885 | hold_mips_optimize = mips_optimize; | |
11886 | mips_optimize = 2; | |
beae10d5 | 11887 | /* Itbl support may require additional care here. */ |
c0ebe874 | 11888 | macro_build (&offset_expr, s, fmt, coproc ? op[0] : op[0] + 1, |
67c0d1eb | 11889 | BFD_RELOC_LO16, AT); |
252b5132 | 11890 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 11891 | relax_end (); |
252b5132 | 11892 | } |
252b5132 RH |
11893 | else |
11894 | abort (); | |
11895 | ||
252b5132 | 11896 | break; |
dd6a37e7 AP |
11897 | |
11898 | case M_SAA_AB: | |
dd6a37e7 | 11899 | s = "saa"; |
7f3c4072 | 11900 | offbits = 0; |
dd6a37e7 AP |
11901 | fmt = "t,(b)"; |
11902 | goto ld_st; | |
11903 | case M_SAAD_AB: | |
dd6a37e7 | 11904 | s = "saad"; |
7f3c4072 | 11905 | offbits = 0; |
dd6a37e7 AP |
11906 | fmt = "t,(b)"; |
11907 | goto ld_st; | |
11908 | ||
252b5132 RH |
11909 | /* New code added to support COPZ instructions. |
11910 | This code builds table entries out of the macros in mip_opcodes. | |
11911 | R4000 uses interlocks to handle coproc delays. | |
11912 | Other chips (like the R3000) require nops to be inserted for delays. | |
11913 | ||
f72c8c98 | 11914 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
11915 | In order to fill delay slots for non-interlocked chips, |
11916 | we must have a way to specify delays based on the coprocessor. | |
11917 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
11918 | What are the side-effects of the cop instruction? | |
11919 | What cache support might we have and what are its effects? | |
11920 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 11921 | What registers are read/set/modified? |
252b5132 RH |
11922 | |
11923 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 11924 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
11925 | |
11926 | case M_COP0: | |
11927 | s = "c0"; | |
11928 | goto copz; | |
11929 | case M_COP1: | |
11930 | s = "c1"; | |
11931 | goto copz; | |
11932 | case M_COP2: | |
11933 | s = "c2"; | |
11934 | goto copz; | |
11935 | case M_COP3: | |
11936 | s = "c3"; | |
11937 | copz: | |
df58fc94 | 11938 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
11939 | /* For now we just do C (same as Cz). The parameter will be |
11940 | stored in insn_opcode by mips_ip. */ | |
c8276761 | 11941 | macro_build (NULL, s, "C", (int) ip->insn_opcode); |
8fc2e39e | 11942 | break; |
252b5132 | 11943 | |
ea1fb5dc | 11944 | case M_MOVE: |
c0ebe874 | 11945 | move_register (op[0], op[1]); |
8fc2e39e | 11946 | break; |
ea1fb5dc | 11947 | |
833794fc MR |
11948 | case M_MOVEP: |
11949 | gas_assert (mips_opts.micromips); | |
11950 | gas_assert (mips_opts.insn32); | |
c0ebe874 RS |
11951 | move_register (micromips_to_32_reg_h_map1[op[0]], |
11952 | micromips_to_32_reg_m_map[op[1]]); | |
11953 | move_register (micromips_to_32_reg_h_map2[op[0]], | |
11954 | micromips_to_32_reg_n_map[op[2]]); | |
833794fc MR |
11955 | break; |
11956 | ||
252b5132 RH |
11957 | case M_DMUL: |
11958 | dbl = 1; | |
11959 | case M_MUL: | |
e407c74b | 11960 | if (mips_opts.arch == CPU_R5900) |
c0ebe874 RS |
11961 | macro_build (NULL, dbl ? "dmultu" : "multu", "d,s,t", op[0], op[1], |
11962 | op[2]); | |
e407c74b NC |
11963 | else |
11964 | { | |
c0ebe874 RS |
11965 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", op[1], op[2]); |
11966 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); | |
e407c74b | 11967 | } |
8fc2e39e | 11968 | break; |
252b5132 RH |
11969 | |
11970 | case M_DMUL_I: | |
11971 | dbl = 1; | |
11972 | case M_MUL_I: | |
11973 | /* The MIPS assembler some times generates shifts and adds. I'm | |
11974 | not trying to be that fancy. GCC should do this for us | |
11975 | anyway. */ | |
8fc2e39e | 11976 | used_at = 1; |
67c0d1eb | 11977 | load_register (AT, &imm_expr, dbl); |
c0ebe874 RS |
11978 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", op[1], AT); |
11979 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); | |
252b5132 RH |
11980 | break; |
11981 | ||
11982 | case M_DMULO_I: | |
11983 | dbl = 1; | |
11984 | case M_MULO_I: | |
11985 | imm = 1; | |
11986 | goto do_mulo; | |
11987 | ||
11988 | case M_DMULO: | |
11989 | dbl = 1; | |
11990 | case M_MULO: | |
11991 | do_mulo: | |
7d10b47d | 11992 | start_noreorder (); |
8fc2e39e | 11993 | used_at = 1; |
252b5132 | 11994 | if (imm) |
67c0d1eb | 11995 | load_register (AT, &imm_expr, dbl); |
c0ebe874 RS |
11996 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", |
11997 | op[1], imm ? AT : op[2]); | |
11998 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); | |
11999 | macro_build (NULL, dbl ? "dsra32" : "sra", SHFT_FMT, op[0], op[0], 31); | |
df58fc94 | 12000 | macro_build (NULL, "mfhi", MFHL_FMT, AT); |
252b5132 | 12001 | if (mips_trap) |
c0ebe874 | 12002 | macro_build (NULL, "tne", TRAP_FMT, op[0], AT, 6); |
252b5132 RH |
12003 | else |
12004 | { | |
df58fc94 RS |
12005 | if (mips_opts.micromips) |
12006 | micromips_label_expr (&label_expr); | |
12007 | else | |
12008 | label_expr.X_add_number = 8; | |
c0ebe874 | 12009 | macro_build (&label_expr, "beq", "s,t,p", op[0], AT); |
a605d2b3 | 12010 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
12011 | macro_build (NULL, "break", BRK_FMT, 6); |
12012 | if (mips_opts.micromips) | |
12013 | micromips_add_label (); | |
252b5132 | 12014 | } |
7d10b47d | 12015 | end_noreorder (); |
c0ebe874 | 12016 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); |
252b5132 RH |
12017 | break; |
12018 | ||
12019 | case M_DMULOU_I: | |
12020 | dbl = 1; | |
12021 | case M_MULOU_I: | |
12022 | imm = 1; | |
12023 | goto do_mulou; | |
12024 | ||
12025 | case M_DMULOU: | |
12026 | dbl = 1; | |
12027 | case M_MULOU: | |
12028 | do_mulou: | |
7d10b47d | 12029 | start_noreorder (); |
8fc2e39e | 12030 | used_at = 1; |
252b5132 | 12031 | if (imm) |
67c0d1eb RS |
12032 | load_register (AT, &imm_expr, dbl); |
12033 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
c0ebe874 | 12034 | op[1], imm ? AT : op[2]); |
df58fc94 | 12035 | macro_build (NULL, "mfhi", MFHL_FMT, AT); |
c0ebe874 | 12036 | macro_build (NULL, "mflo", MFHL_FMT, op[0]); |
252b5132 | 12037 | if (mips_trap) |
df58fc94 | 12038 | macro_build (NULL, "tne", TRAP_FMT, AT, ZERO, 6); |
252b5132 RH |
12039 | else |
12040 | { | |
df58fc94 RS |
12041 | if (mips_opts.micromips) |
12042 | micromips_label_expr (&label_expr); | |
12043 | else | |
12044 | label_expr.X_add_number = 8; | |
12045 | macro_build (&label_expr, "beq", "s,t,p", AT, ZERO); | |
a605d2b3 | 12046 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
12047 | macro_build (NULL, "break", BRK_FMT, 6); |
12048 | if (mips_opts.micromips) | |
12049 | micromips_add_label (); | |
252b5132 | 12050 | } |
7d10b47d | 12051 | end_noreorder (); |
252b5132 RH |
12052 | break; |
12053 | ||
771c7ce4 | 12054 | case M_DROL: |
fef14a42 | 12055 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 12056 | { |
c0ebe874 | 12057 | if (op[0] == op[1]) |
82dd0097 CD |
12058 | { |
12059 | tempreg = AT; | |
12060 | used_at = 1; | |
12061 | } | |
12062 | else | |
c0ebe874 RS |
12063 | tempreg = op[0]; |
12064 | macro_build (NULL, "dnegu", "d,w", tempreg, op[2]); | |
12065 | macro_build (NULL, "drorv", "d,t,s", op[0], op[1], tempreg); | |
8fc2e39e | 12066 | break; |
82dd0097 | 12067 | } |
8fc2e39e | 12068 | used_at = 1; |
c0ebe874 RS |
12069 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, op[2]); |
12070 | macro_build (NULL, "dsrlv", "d,t,s", AT, op[1], AT); | |
12071 | macro_build (NULL, "dsllv", "d,t,s", op[0], op[1], op[2]); | |
12072 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12073 | break; |
12074 | ||
252b5132 | 12075 | case M_ROL: |
fef14a42 | 12076 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 12077 | { |
c0ebe874 | 12078 | if (op[0] == op[1]) |
82dd0097 CD |
12079 | { |
12080 | tempreg = AT; | |
12081 | used_at = 1; | |
12082 | } | |
12083 | else | |
c0ebe874 RS |
12084 | tempreg = op[0]; |
12085 | macro_build (NULL, "negu", "d,w", tempreg, op[2]); | |
12086 | macro_build (NULL, "rorv", "d,t,s", op[0], op[1], tempreg); | |
8fc2e39e | 12087 | break; |
82dd0097 | 12088 | } |
8fc2e39e | 12089 | used_at = 1; |
c0ebe874 RS |
12090 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, op[2]); |
12091 | macro_build (NULL, "srlv", "d,t,s", AT, op[1], AT); | |
12092 | macro_build (NULL, "sllv", "d,t,s", op[0], op[1], op[2]); | |
12093 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
252b5132 RH |
12094 | break; |
12095 | ||
771c7ce4 TS |
12096 | case M_DROL_I: |
12097 | { | |
12098 | unsigned int rot; | |
91d6fa6a NC |
12099 | char *l; |
12100 | char *rr; | |
771c7ce4 | 12101 | |
771c7ce4 | 12102 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 12103 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
12104 | { |
12105 | rot = (64 - rot) & 0x3f; | |
12106 | if (rot >= 32) | |
c0ebe874 | 12107 | macro_build (NULL, "dror32", SHFT_FMT, op[0], op[1], rot - 32); |
60b63b72 | 12108 | else |
c0ebe874 | 12109 | macro_build (NULL, "dror", SHFT_FMT, op[0], op[1], rot); |
8fc2e39e | 12110 | break; |
60b63b72 | 12111 | } |
483fc7cd | 12112 | if (rot == 0) |
483fc7cd | 12113 | { |
c0ebe874 | 12114 | macro_build (NULL, "dsrl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12115 | break; |
483fc7cd | 12116 | } |
82dd0097 | 12117 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
91d6fa6a | 12118 | rr = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 | 12119 | rot &= 0x1f; |
8fc2e39e | 12120 | used_at = 1; |
c0ebe874 RS |
12121 | macro_build (NULL, l, SHFT_FMT, AT, op[1], rot); |
12122 | macro_build (NULL, rr, SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12123 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12124 | } |
12125 | break; | |
12126 | ||
252b5132 | 12127 | case M_ROL_I: |
771c7ce4 TS |
12128 | { |
12129 | unsigned int rot; | |
12130 | ||
771c7ce4 | 12131 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 12132 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 12133 | { |
c0ebe874 RS |
12134 | macro_build (NULL, "ror", SHFT_FMT, op[0], op[1], |
12135 | (32 - rot) & 0x1f); | |
8fc2e39e | 12136 | break; |
60b63b72 | 12137 | } |
483fc7cd | 12138 | if (rot == 0) |
483fc7cd | 12139 | { |
c0ebe874 | 12140 | macro_build (NULL, "srl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12141 | break; |
483fc7cd | 12142 | } |
8fc2e39e | 12143 | used_at = 1; |
c0ebe874 RS |
12144 | macro_build (NULL, "sll", SHFT_FMT, AT, op[1], rot); |
12145 | macro_build (NULL, "srl", SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12146 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12147 | } |
12148 | break; | |
12149 | ||
12150 | case M_DROR: | |
fef14a42 | 12151 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 12152 | { |
c0ebe874 | 12153 | macro_build (NULL, "drorv", "d,t,s", op[0], op[1], op[2]); |
8fc2e39e | 12154 | break; |
82dd0097 | 12155 | } |
8fc2e39e | 12156 | used_at = 1; |
c0ebe874 RS |
12157 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, op[2]); |
12158 | macro_build (NULL, "dsllv", "d,t,s", AT, op[1], AT); | |
12159 | macro_build (NULL, "dsrlv", "d,t,s", op[0], op[1], op[2]); | |
12160 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
252b5132 RH |
12161 | break; |
12162 | ||
12163 | case M_ROR: | |
fef14a42 | 12164 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 12165 | { |
c0ebe874 | 12166 | macro_build (NULL, "rorv", "d,t,s", op[0], op[1], op[2]); |
8fc2e39e | 12167 | break; |
82dd0097 | 12168 | } |
8fc2e39e | 12169 | used_at = 1; |
c0ebe874 RS |
12170 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, op[2]); |
12171 | macro_build (NULL, "sllv", "d,t,s", AT, op[1], AT); | |
12172 | macro_build (NULL, "srlv", "d,t,s", op[0], op[1], op[2]); | |
12173 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
252b5132 RH |
12174 | break; |
12175 | ||
771c7ce4 TS |
12176 | case M_DROR_I: |
12177 | { | |
12178 | unsigned int rot; | |
91d6fa6a NC |
12179 | char *l; |
12180 | char *rr; | |
771c7ce4 | 12181 | |
771c7ce4 | 12182 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 12183 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
12184 | { |
12185 | if (rot >= 32) | |
c0ebe874 | 12186 | macro_build (NULL, "dror32", SHFT_FMT, op[0], op[1], rot - 32); |
82dd0097 | 12187 | else |
c0ebe874 | 12188 | macro_build (NULL, "dror", SHFT_FMT, op[0], op[1], rot); |
8fc2e39e | 12189 | break; |
82dd0097 | 12190 | } |
483fc7cd | 12191 | if (rot == 0) |
483fc7cd | 12192 | { |
c0ebe874 | 12193 | macro_build (NULL, "dsrl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12194 | break; |
483fc7cd | 12195 | } |
91d6fa6a | 12196 | rr = (rot < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 CD |
12197 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; |
12198 | rot &= 0x1f; | |
8fc2e39e | 12199 | used_at = 1; |
c0ebe874 RS |
12200 | macro_build (NULL, rr, SHFT_FMT, AT, op[1], rot); |
12201 | macro_build (NULL, l, SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12202 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 TS |
12203 | } |
12204 | break; | |
12205 | ||
252b5132 | 12206 | case M_ROR_I: |
771c7ce4 TS |
12207 | { |
12208 | unsigned int rot; | |
12209 | ||
771c7ce4 | 12210 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 12211 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 12212 | { |
c0ebe874 | 12213 | macro_build (NULL, "ror", SHFT_FMT, op[0], op[1], rot); |
8fc2e39e | 12214 | break; |
82dd0097 | 12215 | } |
483fc7cd | 12216 | if (rot == 0) |
483fc7cd | 12217 | { |
c0ebe874 | 12218 | macro_build (NULL, "srl", SHFT_FMT, op[0], op[1], 0); |
8fc2e39e | 12219 | break; |
483fc7cd | 12220 | } |
8fc2e39e | 12221 | used_at = 1; |
c0ebe874 RS |
12222 | macro_build (NULL, "srl", SHFT_FMT, AT, op[1], rot); |
12223 | macro_build (NULL, "sll", SHFT_FMT, op[0], op[1], (0x20 - rot) & 0x1f); | |
12224 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); | |
771c7ce4 | 12225 | } |
252b5132 RH |
12226 | break; |
12227 | ||
252b5132 | 12228 | case M_SEQ: |
c0ebe874 RS |
12229 | if (op[1] == 0) |
12230 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[2], BFD_RELOC_LO16); | |
12231 | else if (op[2] == 0) | |
12232 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[1], BFD_RELOC_LO16); | |
252b5132 RH |
12233 | else |
12234 | { | |
c0ebe874 RS |
12235 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], op[2]); |
12236 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[0], BFD_RELOC_LO16); | |
252b5132 | 12237 | } |
8fc2e39e | 12238 | break; |
252b5132 RH |
12239 | |
12240 | case M_SEQ_I: | |
b0e6f033 | 12241 | if (imm_expr.X_add_number == 0) |
252b5132 | 12242 | { |
c0ebe874 | 12243 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
8fc2e39e | 12244 | break; |
252b5132 | 12245 | } |
c0ebe874 | 12246 | if (op[1] == 0) |
252b5132 | 12247 | { |
1661c76c | 12248 | as_warn (_("instruction %s: result is always false"), |
252b5132 | 12249 | ip->insn_mo->name); |
c0ebe874 | 12250 | move_register (op[0], 0); |
8fc2e39e | 12251 | break; |
252b5132 | 12252 | } |
dd3cbb7e NC |
12253 | if (CPU_HAS_SEQ (mips_opts.arch) |
12254 | && -512 <= imm_expr.X_add_number | |
12255 | && imm_expr.X_add_number < 512) | |
12256 | { | |
c0ebe874 | 12257 | macro_build (NULL, "seqi", "t,r,+Q", op[0], op[1], |
750bdd57 | 12258 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
12259 | break; |
12260 | } | |
b0e6f033 | 12261 | if (imm_expr.X_add_number >= 0 |
252b5132 | 12262 | && imm_expr.X_add_number < 0x10000) |
c0ebe874 | 12263 | macro_build (&imm_expr, "xori", "t,r,i", op[0], op[1], BFD_RELOC_LO16); |
b0e6f033 | 12264 | else if (imm_expr.X_add_number > -0x8000 |
252b5132 RH |
12265 | && imm_expr.X_add_number < 0) |
12266 | { | |
12267 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 12268 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
c0ebe874 | 12269 | "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
252b5132 | 12270 | } |
dd3cbb7e NC |
12271 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
12272 | { | |
12273 | used_at = 1; | |
12274 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
c0ebe874 | 12275 | macro_build (NULL, "seq", "d,v,t", op[0], op[1], AT); |
dd3cbb7e NC |
12276 | break; |
12277 | } | |
252b5132 RH |
12278 | else |
12279 | { | |
67c0d1eb | 12280 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 | 12281 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12282 | used_at = 1; |
12283 | } | |
c0ebe874 | 12284 | macro_build (&expr1, "sltiu", "t,r,j", op[0], op[0], BFD_RELOC_LO16); |
8fc2e39e | 12285 | break; |
252b5132 | 12286 | |
c0ebe874 | 12287 | case M_SGE: /* X >= Y <==> not (X < Y) */ |
252b5132 RH |
12288 | s = "slt"; |
12289 | goto sge; | |
12290 | case M_SGEU: | |
12291 | s = "sltu"; | |
12292 | sge: | |
c0ebe874 RS |
12293 | macro_build (NULL, s, "d,v,t", op[0], op[1], op[2]); |
12294 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); | |
8fc2e39e | 12295 | break; |
252b5132 | 12296 | |
c0ebe874 | 12297 | case M_SGE_I: /* X >= I <==> not (X < I) */ |
252b5132 | 12298 | case M_SGEU_I: |
b0e6f033 | 12299 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 | 12300 | && imm_expr.X_add_number < 0x8000) |
c0ebe874 RS |
12301 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
12302 | op[0], op[1], BFD_RELOC_LO16); | |
252b5132 RH |
12303 | else |
12304 | { | |
67c0d1eb RS |
12305 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
12306 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", | |
c0ebe874 | 12307 | op[0], op[1], AT); |
252b5132 RH |
12308 | used_at = 1; |
12309 | } | |
c0ebe874 | 12310 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); |
8fc2e39e | 12311 | break; |
252b5132 | 12312 | |
c0ebe874 | 12313 | case M_SGT: /* X > Y <==> Y < X */ |
252b5132 RH |
12314 | s = "slt"; |
12315 | goto sgt; | |
12316 | case M_SGTU: | |
12317 | s = "sltu"; | |
12318 | sgt: | |
c0ebe874 | 12319 | macro_build (NULL, s, "d,v,t", op[0], op[2], op[1]); |
8fc2e39e | 12320 | break; |
252b5132 | 12321 | |
c0ebe874 | 12322 | case M_SGT_I: /* X > I <==> I < X */ |
252b5132 RH |
12323 | s = "slt"; |
12324 | goto sgti; | |
12325 | case M_SGTU_I: | |
12326 | s = "sltu"; | |
12327 | sgti: | |
8fc2e39e | 12328 | used_at = 1; |
67c0d1eb | 12329 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 | 12330 | macro_build (NULL, s, "d,v,t", op[0], AT, op[1]); |
252b5132 RH |
12331 | break; |
12332 | ||
c0ebe874 | 12333 | case M_SLE: /* X <= Y <==> Y >= X <==> not (Y < X) */ |
252b5132 RH |
12334 | s = "slt"; |
12335 | goto sle; | |
12336 | case M_SLEU: | |
12337 | s = "sltu"; | |
12338 | sle: | |
c0ebe874 RS |
12339 | macro_build (NULL, s, "d,v,t", op[0], op[2], op[1]); |
12340 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); | |
8fc2e39e | 12341 | break; |
252b5132 | 12342 | |
c0ebe874 | 12343 | case M_SLE_I: /* X <= I <==> I >= X <==> not (I < X) */ |
252b5132 RH |
12344 | s = "slt"; |
12345 | goto slei; | |
12346 | case M_SLEU_I: | |
12347 | s = "sltu"; | |
12348 | slei: | |
8fc2e39e | 12349 | used_at = 1; |
67c0d1eb | 12350 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 RS |
12351 | macro_build (NULL, s, "d,v,t", op[0], AT, op[1]); |
12352 | macro_build (&expr1, "xori", "t,r,i", op[0], op[0], BFD_RELOC_LO16); | |
252b5132 RH |
12353 | break; |
12354 | ||
12355 | case M_SLT_I: | |
b0e6f033 | 12356 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 RH |
12357 | && imm_expr.X_add_number < 0x8000) |
12358 | { | |
c0ebe874 RS |
12359 | macro_build (&imm_expr, "slti", "t,r,j", op[0], op[1], |
12360 | BFD_RELOC_LO16); | |
8fc2e39e | 12361 | break; |
252b5132 | 12362 | } |
8fc2e39e | 12363 | used_at = 1; |
67c0d1eb | 12364 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 | 12365 | macro_build (NULL, "slt", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12366 | break; |
12367 | ||
12368 | case M_SLTU_I: | |
b0e6f033 | 12369 | if (imm_expr.X_add_number >= -0x8000 |
252b5132 RH |
12370 | && imm_expr.X_add_number < 0x8000) |
12371 | { | |
c0ebe874 | 12372 | macro_build (&imm_expr, "sltiu", "t,r,j", op[0], op[1], |
17a2f251 | 12373 | BFD_RELOC_LO16); |
8fc2e39e | 12374 | break; |
252b5132 | 12375 | } |
8fc2e39e | 12376 | used_at = 1; |
67c0d1eb | 12377 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 | 12378 | macro_build (NULL, "sltu", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12379 | break; |
12380 | ||
12381 | case M_SNE: | |
c0ebe874 RS |
12382 | if (op[1] == 0) |
12383 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[2]); | |
12384 | else if (op[2] == 0) | |
12385 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[1]); | |
252b5132 RH |
12386 | else |
12387 | { | |
c0ebe874 RS |
12388 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], op[2]); |
12389 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[0]); | |
252b5132 | 12390 | } |
8fc2e39e | 12391 | break; |
252b5132 RH |
12392 | |
12393 | case M_SNE_I: | |
b0e6f033 | 12394 | if (imm_expr.X_add_number == 0) |
252b5132 | 12395 | { |
c0ebe874 | 12396 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[1]); |
8fc2e39e | 12397 | break; |
252b5132 | 12398 | } |
c0ebe874 | 12399 | if (op[1] == 0) |
252b5132 | 12400 | { |
1661c76c | 12401 | as_warn (_("instruction %s: result is always true"), |
252b5132 | 12402 | ip->insn_mo->name); |
67c0d1eb | 12403 | macro_build (&expr1, HAVE_32BIT_GPRS ? "addiu" : "daddiu", "t,r,j", |
c0ebe874 | 12404 | op[0], 0, BFD_RELOC_LO16); |
8fc2e39e | 12405 | break; |
252b5132 | 12406 | } |
dd3cbb7e NC |
12407 | if (CPU_HAS_SEQ (mips_opts.arch) |
12408 | && -512 <= imm_expr.X_add_number | |
12409 | && imm_expr.X_add_number < 512) | |
12410 | { | |
c0ebe874 | 12411 | macro_build (NULL, "snei", "t,r,+Q", op[0], op[1], |
750bdd57 | 12412 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
12413 | break; |
12414 | } | |
b0e6f033 | 12415 | if (imm_expr.X_add_number >= 0 |
252b5132 RH |
12416 | && imm_expr.X_add_number < 0x10000) |
12417 | { | |
c0ebe874 RS |
12418 | macro_build (&imm_expr, "xori", "t,r,i", op[0], op[1], |
12419 | BFD_RELOC_LO16); | |
252b5132 | 12420 | } |
b0e6f033 | 12421 | else if (imm_expr.X_add_number > -0x8000 |
252b5132 RH |
12422 | && imm_expr.X_add_number < 0) |
12423 | { | |
12424 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 12425 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
c0ebe874 | 12426 | "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
252b5132 | 12427 | } |
dd3cbb7e NC |
12428 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
12429 | { | |
12430 | used_at = 1; | |
12431 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
c0ebe874 | 12432 | macro_build (NULL, "sne", "d,v,t", op[0], op[1], AT); |
dd3cbb7e NC |
12433 | break; |
12434 | } | |
252b5132 RH |
12435 | else |
12436 | { | |
67c0d1eb | 12437 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 | 12438 | macro_build (NULL, "xor", "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12439 | used_at = 1; |
12440 | } | |
c0ebe874 | 12441 | macro_build (NULL, "sltu", "d,v,t", op[0], 0, op[0]); |
8fc2e39e | 12442 | break; |
252b5132 | 12443 | |
df58fc94 RS |
12444 | case M_SUB_I: |
12445 | s = "addi"; | |
12446 | s2 = "sub"; | |
12447 | goto do_subi; | |
12448 | case M_SUBU_I: | |
12449 | s = "addiu"; | |
12450 | s2 = "subu"; | |
12451 | goto do_subi; | |
252b5132 RH |
12452 | case M_DSUB_I: |
12453 | dbl = 1; | |
df58fc94 RS |
12454 | s = "daddi"; |
12455 | s2 = "dsub"; | |
12456 | if (!mips_opts.micromips) | |
12457 | goto do_subi; | |
b0e6f033 | 12458 | if (imm_expr.X_add_number > -0x200 |
df58fc94 | 12459 | && imm_expr.X_add_number <= 0x200) |
252b5132 | 12460 | { |
b0e6f033 RS |
12461 | macro_build (NULL, s, "t,r,.", op[0], op[1], |
12462 | (int) -imm_expr.X_add_number); | |
8fc2e39e | 12463 | break; |
252b5132 | 12464 | } |
df58fc94 | 12465 | goto do_subi_i; |
252b5132 RH |
12466 | case M_DSUBU_I: |
12467 | dbl = 1; | |
df58fc94 RS |
12468 | s = "daddiu"; |
12469 | s2 = "dsubu"; | |
12470 | do_subi: | |
b0e6f033 | 12471 | if (imm_expr.X_add_number > -0x8000 |
252b5132 RH |
12472 | && imm_expr.X_add_number <= 0x8000) |
12473 | { | |
12474 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
c0ebe874 | 12475 | macro_build (&imm_expr, s, "t,r,j", op[0], op[1], BFD_RELOC_LO16); |
8fc2e39e | 12476 | break; |
252b5132 | 12477 | } |
df58fc94 | 12478 | do_subi_i: |
8fc2e39e | 12479 | used_at = 1; |
67c0d1eb | 12480 | load_register (AT, &imm_expr, dbl); |
c0ebe874 | 12481 | macro_build (NULL, s2, "d,v,t", op[0], op[1], AT); |
252b5132 RH |
12482 | break; |
12483 | ||
12484 | case M_TEQ_I: | |
12485 | s = "teq"; | |
12486 | goto trap; | |
12487 | case M_TGE_I: | |
12488 | s = "tge"; | |
12489 | goto trap; | |
12490 | case M_TGEU_I: | |
12491 | s = "tgeu"; | |
12492 | goto trap; | |
12493 | case M_TLT_I: | |
12494 | s = "tlt"; | |
12495 | goto trap; | |
12496 | case M_TLTU_I: | |
12497 | s = "tltu"; | |
12498 | goto trap; | |
12499 | case M_TNE_I: | |
12500 | s = "tne"; | |
12501 | trap: | |
8fc2e39e | 12502 | used_at = 1; |
67c0d1eb | 12503 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
c0ebe874 | 12504 | macro_build (NULL, s, "s,t", op[0], AT); |
252b5132 RH |
12505 | break; |
12506 | ||
252b5132 | 12507 | case M_TRUNCWS: |
43841e91 | 12508 | case M_TRUNCWD: |
df58fc94 | 12509 | gas_assert (!mips_opts.micromips); |
0aa27725 | 12510 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 12511 | used_at = 1; |
252b5132 RH |
12512 | |
12513 | /* | |
12514 | * Is the double cfc1 instruction a bug in the mips assembler; | |
12515 | * or is there a reason for it? | |
12516 | */ | |
7d10b47d | 12517 | start_noreorder (); |
c0ebe874 RS |
12518 | macro_build (NULL, "cfc1", "t,G", op[2], RA); |
12519 | macro_build (NULL, "cfc1", "t,G", op[2], RA); | |
67c0d1eb | 12520 | macro_build (NULL, "nop", ""); |
252b5132 | 12521 | expr1.X_add_number = 3; |
c0ebe874 | 12522 | macro_build (&expr1, "ori", "t,r,i", AT, op[2], BFD_RELOC_LO16); |
252b5132 | 12523 | expr1.X_add_number = 2; |
67c0d1eb RS |
12524 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
12525 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
12526 | macro_build (NULL, "nop", ""); | |
12527 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
c0ebe874 RS |
12528 | op[0], op[1]); |
12529 | macro_build (NULL, "ctc1", "t,G", op[2], RA); | |
67c0d1eb | 12530 | macro_build (NULL, "nop", ""); |
7d10b47d | 12531 | end_noreorder (); |
252b5132 RH |
12532 | break; |
12533 | ||
f2ae14a1 | 12534 | case M_ULH_AB: |
252b5132 | 12535 | s = "lb"; |
df58fc94 RS |
12536 | s2 = "lbu"; |
12537 | off = 1; | |
12538 | goto uld_st; | |
f2ae14a1 | 12539 | case M_ULHU_AB: |
252b5132 | 12540 | s = "lbu"; |
df58fc94 RS |
12541 | s2 = "lbu"; |
12542 | off = 1; | |
12543 | goto uld_st; | |
f2ae14a1 | 12544 | case M_ULW_AB: |
df58fc94 RS |
12545 | s = "lwl"; |
12546 | s2 = "lwr"; | |
7f3c4072 | 12547 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
12548 | off = 3; |
12549 | goto uld_st; | |
f2ae14a1 | 12550 | case M_ULD_AB: |
252b5132 RH |
12551 | s = "ldl"; |
12552 | s2 = "ldr"; | |
7f3c4072 | 12553 | offbits = (mips_opts.micromips ? 12 : 16); |
252b5132 | 12554 | off = 7; |
df58fc94 | 12555 | goto uld_st; |
f2ae14a1 | 12556 | case M_USH_AB: |
df58fc94 RS |
12557 | s = "sb"; |
12558 | s2 = "sb"; | |
12559 | off = 1; | |
12560 | ust = 1; | |
12561 | goto uld_st; | |
f2ae14a1 | 12562 | case M_USW_AB: |
df58fc94 RS |
12563 | s = "swl"; |
12564 | s2 = "swr"; | |
7f3c4072 | 12565 | offbits = (mips_opts.micromips ? 12 : 16); |
252b5132 | 12566 | off = 3; |
df58fc94 RS |
12567 | ust = 1; |
12568 | goto uld_st; | |
f2ae14a1 | 12569 | case M_USD_AB: |
df58fc94 RS |
12570 | s = "sdl"; |
12571 | s2 = "sdr"; | |
7f3c4072 | 12572 | offbits = (mips_opts.micromips ? 12 : 16); |
df58fc94 RS |
12573 | off = 7; |
12574 | ust = 1; | |
12575 | ||
12576 | uld_st: | |
c0ebe874 | 12577 | breg = op[2]; |
f2ae14a1 | 12578 | large_offset = !small_offset_p (off, align, offbits); |
df58fc94 RS |
12579 | ep = &offset_expr; |
12580 | expr1.X_add_number = 0; | |
f2ae14a1 | 12581 | if (large_offset) |
df58fc94 RS |
12582 | { |
12583 | used_at = 1; | |
12584 | tempreg = AT; | |
f2ae14a1 RS |
12585 | if (small_offset_p (0, align, 16)) |
12586 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", tempreg, breg, -1, | |
12587 | offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
12588 | else | |
12589 | { | |
12590 | load_address (tempreg, ep, &used_at); | |
12591 | if (breg != 0) | |
12592 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
12593 | tempreg, tempreg, breg); | |
12594 | } | |
12595 | offset_reloc[0] = BFD_RELOC_LO16; | |
12596 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
12597 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
df58fc94 | 12598 | breg = tempreg; |
c0ebe874 | 12599 | tempreg = op[0]; |
df58fc94 RS |
12600 | ep = &expr1; |
12601 | } | |
c0ebe874 | 12602 | else if (!ust && op[0] == breg) |
8fc2e39e TS |
12603 | { |
12604 | used_at = 1; | |
12605 | tempreg = AT; | |
12606 | } | |
252b5132 | 12607 | else |
c0ebe874 | 12608 | tempreg = op[0]; |
af22f5b2 | 12609 | |
df58fc94 RS |
12610 | if (off == 1) |
12611 | goto ulh_sh; | |
252b5132 | 12612 | |
90ecf173 | 12613 | if (!target_big_endian) |
df58fc94 | 12614 | ep->X_add_number += off; |
f2ae14a1 | 12615 | if (offbits == 12) |
c8276761 | 12616 | macro_build (NULL, s, "t,~(b)", tempreg, (int) ep->X_add_number, breg); |
f2ae14a1 RS |
12617 | else |
12618 | macro_build (ep, s, "t,o(b)", tempreg, -1, | |
12619 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
df58fc94 | 12620 | |
90ecf173 | 12621 | if (!target_big_endian) |
df58fc94 | 12622 | ep->X_add_number -= off; |
252b5132 | 12623 | else |
df58fc94 | 12624 | ep->X_add_number += off; |
f2ae14a1 | 12625 | if (offbits == 12) |
df58fc94 | 12626 | macro_build (NULL, s2, "t,~(b)", |
c8276761 | 12627 | tempreg, (int) ep->X_add_number, breg); |
f2ae14a1 RS |
12628 | else |
12629 | macro_build (ep, s2, "t,o(b)", tempreg, -1, | |
12630 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
252b5132 | 12631 | |
df58fc94 | 12632 | /* If necessary, move the result in tempreg to the final destination. */ |
c0ebe874 | 12633 | if (!ust && op[0] != tempreg) |
df58fc94 RS |
12634 | { |
12635 | /* Protect second load's delay slot. */ | |
12636 | load_delay_nop (); | |
c0ebe874 | 12637 | move_register (op[0], tempreg); |
df58fc94 | 12638 | } |
8fc2e39e | 12639 | break; |
252b5132 | 12640 | |
df58fc94 | 12641 | ulh_sh: |
d6bc6245 | 12642 | used_at = 1; |
df58fc94 RS |
12643 | if (target_big_endian == ust) |
12644 | ep->X_add_number += off; | |
c0ebe874 | 12645 | tempreg = ust || large_offset ? op[0] : AT; |
f2ae14a1 RS |
12646 | macro_build (ep, s, "t,o(b)", tempreg, -1, |
12647 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
df58fc94 RS |
12648 | |
12649 | /* For halfword transfers we need a temporary register to shuffle | |
12650 | bytes. Unfortunately for M_USH_A we have none available before | |
12651 | the next store as AT holds the base address. We deal with this | |
12652 | case by clobbering TREG and then restoring it as with ULH. */ | |
c0ebe874 | 12653 | tempreg = ust == large_offset ? op[0] : AT; |
df58fc94 | 12654 | if (ust) |
c0ebe874 | 12655 | macro_build (NULL, "srl", SHFT_FMT, tempreg, op[0], 8); |
df58fc94 RS |
12656 | |
12657 | if (target_big_endian == ust) | |
12658 | ep->X_add_number -= off; | |
252b5132 | 12659 | else |
df58fc94 | 12660 | ep->X_add_number += off; |
f2ae14a1 RS |
12661 | macro_build (ep, s2, "t,o(b)", tempreg, -1, |
12662 | offset_reloc[0], offset_reloc[1], offset_reloc[2], breg); | |
252b5132 | 12663 | |
df58fc94 | 12664 | /* For M_USH_A re-retrieve the LSB. */ |
f2ae14a1 | 12665 | if (ust && large_offset) |
df58fc94 RS |
12666 | { |
12667 | if (target_big_endian) | |
12668 | ep->X_add_number += off; | |
12669 | else | |
12670 | ep->X_add_number -= off; | |
f2ae14a1 RS |
12671 | macro_build (&expr1, "lbu", "t,o(b)", AT, -1, |
12672 | offset_reloc[0], offset_reloc[1], offset_reloc[2], AT); | |
df58fc94 RS |
12673 | } |
12674 | /* For ULH and M_USH_A OR the LSB in. */ | |
f2ae14a1 | 12675 | if (!ust || large_offset) |
df58fc94 | 12676 | { |
c0ebe874 | 12677 | tempreg = !large_offset ? AT : op[0]; |
df58fc94 | 12678 | macro_build (NULL, "sll", SHFT_FMT, tempreg, tempreg, 8); |
c0ebe874 | 12679 | macro_build (NULL, "or", "d,v,t", op[0], op[0], AT); |
df58fc94 | 12680 | } |
252b5132 RH |
12681 | break; |
12682 | ||
12683 | default: | |
12684 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 12685 | are added dynamically. */ |
1661c76c | 12686 | as_bad (_("macro %s not implemented yet"), ip->insn_mo->name); |
252b5132 RH |
12687 | break; |
12688 | } | |
741fe287 | 12689 | if (!mips_opts.at && used_at) |
1661c76c | 12690 | as_bad (_("macro used $at after \".set noat\"")); |
252b5132 RH |
12691 | } |
12692 | ||
12693 | /* Implement macros in mips16 mode. */ | |
12694 | ||
12695 | static void | |
17a2f251 | 12696 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 | 12697 | { |
c0ebe874 | 12698 | const struct mips_operand_array *operands; |
252b5132 | 12699 | int mask; |
c0ebe874 | 12700 | int tmp; |
252b5132 RH |
12701 | expressionS expr1; |
12702 | int dbl; | |
12703 | const char *s, *s2, *s3; | |
c0ebe874 RS |
12704 | unsigned int op[MAX_OPERANDS]; |
12705 | unsigned int i; | |
252b5132 RH |
12706 | |
12707 | mask = ip->insn_mo->mask; | |
12708 | ||
c0ebe874 RS |
12709 | operands = insn_operands (ip); |
12710 | for (i = 0; i < MAX_OPERANDS; i++) | |
12711 | if (operands->operand[i]) | |
12712 | op[i] = insn_extract_operand (ip, operands->operand[i]); | |
12713 | else | |
12714 | op[i] = -1; | |
252b5132 | 12715 | |
252b5132 RH |
12716 | expr1.X_op = O_constant; |
12717 | expr1.X_op_symbol = NULL; | |
12718 | expr1.X_add_symbol = NULL; | |
12719 | expr1.X_add_number = 1; | |
12720 | ||
12721 | dbl = 0; | |
12722 | ||
12723 | switch (mask) | |
12724 | { | |
12725 | default: | |
b37df7c4 | 12726 | abort (); |
252b5132 RH |
12727 | |
12728 | case M_DDIV_3: | |
12729 | dbl = 1; | |
12730 | case M_DIV_3: | |
12731 | s = "mflo"; | |
12732 | goto do_div3; | |
12733 | case M_DREM_3: | |
12734 | dbl = 1; | |
12735 | case M_REM_3: | |
12736 | s = "mfhi"; | |
12737 | do_div3: | |
7d10b47d | 12738 | start_noreorder (); |
c0ebe874 | 12739 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", op[1], op[2]); |
252b5132 | 12740 | expr1.X_add_number = 2; |
c0ebe874 | 12741 | macro_build (&expr1, "bnez", "x,p", op[2]); |
67c0d1eb | 12742 | macro_build (NULL, "break", "6", 7); |
bdaaa2e1 | 12743 | |
252b5132 RH |
12744 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
12745 | since that causes an overflow. We should do that as well, | |
12746 | but I don't see how to do the comparisons without a temporary | |
12747 | register. */ | |
7d10b47d | 12748 | end_noreorder (); |
c0ebe874 | 12749 | macro_build (NULL, s, "x", op[0]); |
252b5132 RH |
12750 | break; |
12751 | ||
12752 | case M_DIVU_3: | |
12753 | s = "divu"; | |
12754 | s2 = "mflo"; | |
12755 | goto do_divu3; | |
12756 | case M_REMU_3: | |
12757 | s = "divu"; | |
12758 | s2 = "mfhi"; | |
12759 | goto do_divu3; | |
12760 | case M_DDIVU_3: | |
12761 | s = "ddivu"; | |
12762 | s2 = "mflo"; | |
12763 | goto do_divu3; | |
12764 | case M_DREMU_3: | |
12765 | s = "ddivu"; | |
12766 | s2 = "mfhi"; | |
12767 | do_divu3: | |
7d10b47d | 12768 | start_noreorder (); |
c0ebe874 | 12769 | macro_build (NULL, s, "0,x,y", op[1], op[2]); |
252b5132 | 12770 | expr1.X_add_number = 2; |
c0ebe874 | 12771 | macro_build (&expr1, "bnez", "x,p", op[2]); |
67c0d1eb | 12772 | macro_build (NULL, "break", "6", 7); |
7d10b47d | 12773 | end_noreorder (); |
c0ebe874 | 12774 | macro_build (NULL, s2, "x", op[0]); |
252b5132 RH |
12775 | break; |
12776 | ||
12777 | case M_DMUL: | |
12778 | dbl = 1; | |
12779 | case M_MUL: | |
c0ebe874 RS |
12780 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", op[1], op[2]); |
12781 | macro_build (NULL, "mflo", "x", op[0]); | |
8fc2e39e | 12782 | break; |
252b5132 RH |
12783 | |
12784 | case M_DSUBU_I: | |
12785 | dbl = 1; | |
12786 | goto do_subu; | |
12787 | case M_SUBU_I: | |
12788 | do_subu: | |
252b5132 | 12789 | imm_expr.X_add_number = -imm_expr.X_add_number; |
c0ebe874 | 12790 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", op[0], op[1]); |
252b5132 RH |
12791 | break; |
12792 | ||
12793 | case M_SUBU_I_2: | |
252b5132 | 12794 | imm_expr.X_add_number = -imm_expr.X_add_number; |
c0ebe874 | 12795 | macro_build (&imm_expr, "addiu", "x,k", op[0]); |
252b5132 RH |
12796 | break; |
12797 | ||
12798 | case M_DSUBU_I_2: | |
252b5132 | 12799 | imm_expr.X_add_number = -imm_expr.X_add_number; |
c0ebe874 | 12800 | macro_build (&imm_expr, "daddiu", "y,j", op[0]); |
252b5132 RH |
12801 | break; |
12802 | ||
12803 | case M_BEQ: | |
12804 | s = "cmp"; | |
12805 | s2 = "bteqz"; | |
12806 | goto do_branch; | |
12807 | case M_BNE: | |
12808 | s = "cmp"; | |
12809 | s2 = "btnez"; | |
12810 | goto do_branch; | |
12811 | case M_BLT: | |
12812 | s = "slt"; | |
12813 | s2 = "btnez"; | |
12814 | goto do_branch; | |
12815 | case M_BLTU: | |
12816 | s = "sltu"; | |
12817 | s2 = "btnez"; | |
12818 | goto do_branch; | |
12819 | case M_BLE: | |
12820 | s = "slt"; | |
12821 | s2 = "bteqz"; | |
12822 | goto do_reverse_branch; | |
12823 | case M_BLEU: | |
12824 | s = "sltu"; | |
12825 | s2 = "bteqz"; | |
12826 | goto do_reverse_branch; | |
12827 | case M_BGE: | |
12828 | s = "slt"; | |
12829 | s2 = "bteqz"; | |
12830 | goto do_branch; | |
12831 | case M_BGEU: | |
12832 | s = "sltu"; | |
12833 | s2 = "bteqz"; | |
12834 | goto do_branch; | |
12835 | case M_BGT: | |
12836 | s = "slt"; | |
12837 | s2 = "btnez"; | |
12838 | goto do_reverse_branch; | |
12839 | case M_BGTU: | |
12840 | s = "sltu"; | |
12841 | s2 = "btnez"; | |
12842 | ||
12843 | do_reverse_branch: | |
c0ebe874 RS |
12844 | tmp = op[1]; |
12845 | op[1] = op[0]; | |
12846 | op[0] = tmp; | |
252b5132 RH |
12847 | |
12848 | do_branch: | |
c0ebe874 | 12849 | macro_build (NULL, s, "x,y", op[0], op[1]); |
67c0d1eb | 12850 | macro_build (&offset_expr, s2, "p"); |
252b5132 RH |
12851 | break; |
12852 | ||
12853 | case M_BEQ_I: | |
12854 | s = "cmpi"; | |
12855 | s2 = "bteqz"; | |
12856 | s3 = "x,U"; | |
12857 | goto do_branch_i; | |
12858 | case M_BNE_I: | |
12859 | s = "cmpi"; | |
12860 | s2 = "btnez"; | |
12861 | s3 = "x,U"; | |
12862 | goto do_branch_i; | |
12863 | case M_BLT_I: | |
12864 | s = "slti"; | |
12865 | s2 = "btnez"; | |
12866 | s3 = "x,8"; | |
12867 | goto do_branch_i; | |
12868 | case M_BLTU_I: | |
12869 | s = "sltiu"; | |
12870 | s2 = "btnez"; | |
12871 | s3 = "x,8"; | |
12872 | goto do_branch_i; | |
12873 | case M_BLE_I: | |
12874 | s = "slti"; | |
12875 | s2 = "btnez"; | |
12876 | s3 = "x,8"; | |
12877 | goto do_addone_branch_i; | |
12878 | case M_BLEU_I: | |
12879 | s = "sltiu"; | |
12880 | s2 = "btnez"; | |
12881 | s3 = "x,8"; | |
12882 | goto do_addone_branch_i; | |
12883 | case M_BGE_I: | |
12884 | s = "slti"; | |
12885 | s2 = "bteqz"; | |
12886 | s3 = "x,8"; | |
12887 | goto do_branch_i; | |
12888 | case M_BGEU_I: | |
12889 | s = "sltiu"; | |
12890 | s2 = "bteqz"; | |
12891 | s3 = "x,8"; | |
12892 | goto do_branch_i; | |
12893 | case M_BGT_I: | |
12894 | s = "slti"; | |
12895 | s2 = "bteqz"; | |
12896 | s3 = "x,8"; | |
12897 | goto do_addone_branch_i; | |
12898 | case M_BGTU_I: | |
12899 | s = "sltiu"; | |
12900 | s2 = "bteqz"; | |
12901 | s3 = "x,8"; | |
12902 | ||
12903 | do_addone_branch_i: | |
252b5132 RH |
12904 | ++imm_expr.X_add_number; |
12905 | ||
12906 | do_branch_i: | |
c0ebe874 | 12907 | macro_build (&imm_expr, s, s3, op[0]); |
67c0d1eb | 12908 | macro_build (&offset_expr, s2, "p"); |
252b5132 RH |
12909 | break; |
12910 | ||
12911 | case M_ABS: | |
12912 | expr1.X_add_number = 0; | |
c0ebe874 RS |
12913 | macro_build (&expr1, "slti", "x,8", op[1]); |
12914 | if (op[0] != op[1]) | |
12915 | macro_build (NULL, "move", "y,X", op[0], mips16_to_32_reg_map[op[1]]); | |
252b5132 | 12916 | expr1.X_add_number = 2; |
67c0d1eb | 12917 | macro_build (&expr1, "bteqz", "p"); |
c0ebe874 | 12918 | macro_build (NULL, "neg", "x,w", op[0], op[0]); |
0acfaea6 | 12919 | break; |
252b5132 RH |
12920 | } |
12921 | } | |
12922 | ||
14daeee3 RS |
12923 | /* Look up instruction [START, START + LENGTH) in HASH. Record any extra |
12924 | opcode bits in *OPCODE_EXTRA. */ | |
12925 | ||
12926 | static struct mips_opcode * | |
12927 | mips_lookup_insn (struct hash_control *hash, const char *start, | |
da8bca91 | 12928 | ssize_t length, unsigned int *opcode_extra) |
14daeee3 RS |
12929 | { |
12930 | char *name, *dot, *p; | |
12931 | unsigned int mask, suffix; | |
da8bca91 | 12932 | ssize_t opend; |
14daeee3 RS |
12933 | struct mips_opcode *insn; |
12934 | ||
12935 | /* Make a copy of the instruction so that we can fiddle with it. */ | |
12936 | name = alloca (length + 1); | |
12937 | memcpy (name, start, length); | |
12938 | name[length] = '\0'; | |
12939 | ||
12940 | /* Look up the instruction as-is. */ | |
12941 | insn = (struct mips_opcode *) hash_find (hash, name); | |
ee5734f0 | 12942 | if (insn) |
14daeee3 RS |
12943 | return insn; |
12944 | ||
12945 | dot = strchr (name, '.'); | |
12946 | if (dot && dot[1]) | |
12947 | { | |
12948 | /* Try to interpret the text after the dot as a VU0 channel suffix. */ | |
12949 | p = mips_parse_vu0_channels (dot + 1, &mask); | |
12950 | if (*p == 0 && mask != 0) | |
12951 | { | |
12952 | *dot = 0; | |
12953 | insn = (struct mips_opcode *) hash_find (hash, name); | |
12954 | *dot = '.'; | |
12955 | if (insn && (insn->pinfo2 & INSN2_VU0_CHANNEL_SUFFIX) != 0) | |
12956 | { | |
12957 | *opcode_extra |= mask << mips_vu0_channel_mask.lsb; | |
12958 | return insn; | |
12959 | } | |
12960 | } | |
12961 | } | |
12962 | ||
12963 | if (mips_opts.micromips) | |
12964 | { | |
12965 | /* See if there's an instruction size override suffix, | |
12966 | either `16' or `32', at the end of the mnemonic proper, | |
12967 | that defines the operation, i.e. before the first `.' | |
12968 | character if any. Strip it and retry. */ | |
12969 | opend = dot != NULL ? dot - name : length; | |
12970 | if (opend >= 3 && name[opend - 2] == '1' && name[opend - 1] == '6') | |
12971 | suffix = 2; | |
12972 | else if (name[opend - 2] == '3' && name[opend - 1] == '2') | |
12973 | suffix = 4; | |
12974 | else | |
12975 | suffix = 0; | |
12976 | if (suffix) | |
12977 | { | |
12978 | memcpy (name + opend - 2, name + opend, length - opend + 1); | |
12979 | insn = (struct mips_opcode *) hash_find (hash, name); | |
ee5734f0 | 12980 | if (insn) |
14daeee3 RS |
12981 | { |
12982 | forced_insn_length = suffix; | |
12983 | return insn; | |
12984 | } | |
12985 | } | |
12986 | } | |
12987 | ||
12988 | return NULL; | |
12989 | } | |
12990 | ||
77bd4346 | 12991 | /* Assemble an instruction into its binary format. If the instruction |
e423441d RS |
12992 | is a macro, set imm_expr and offset_expr to the values associated |
12993 | with "I" and "A" operands respectively. Otherwise store the value | |
12994 | of the relocatable field (if any) in offset_expr. In both cases | |
12995 | set offset_reloc to the relocation operators applied to offset_expr. */ | |
252b5132 RH |
12996 | |
12997 | static void | |
60f20e8b | 12998 | mips_ip (char *str, struct mips_cl_insn *insn) |
252b5132 | 12999 | { |
60f20e8b | 13000 | const struct mips_opcode *first, *past; |
df58fc94 | 13001 | struct hash_control *hash; |
a92713e6 | 13002 | char format; |
14daeee3 | 13003 | size_t end; |
a92713e6 | 13004 | struct mips_operand_token *tokens; |
14daeee3 | 13005 | unsigned int opcode_extra; |
252b5132 | 13006 | |
df58fc94 RS |
13007 | if (mips_opts.micromips) |
13008 | { | |
13009 | hash = micromips_op_hash; | |
13010 | past = µmips_opcodes[bfd_micromips_num_opcodes]; | |
13011 | } | |
13012 | else | |
13013 | { | |
13014 | hash = op_hash; | |
13015 | past = &mips_opcodes[NUMOPCODES]; | |
13016 | } | |
13017 | forced_insn_length = 0; | |
14daeee3 | 13018 | opcode_extra = 0; |
252b5132 | 13019 | |
df58fc94 | 13020 | /* We first try to match an instruction up to a space or to the end. */ |
a40bc9dd RS |
13021 | for (end = 0; str[end] != '\0' && !ISSPACE (str[end]); end++) |
13022 | continue; | |
bdaaa2e1 | 13023 | |
60f20e8b RS |
13024 | first = mips_lookup_insn (hash, str, end, &opcode_extra); |
13025 | if (first == NULL) | |
252b5132 | 13026 | { |
1661c76c | 13027 | set_insn_error (0, _("unrecognized opcode")); |
a40bc9dd | 13028 | return; |
252b5132 RH |
13029 | } |
13030 | ||
60f20e8b | 13031 | if (strcmp (first->name, "li.s") == 0) |
a92713e6 | 13032 | format = 'f'; |
60f20e8b | 13033 | else if (strcmp (first->name, "li.d") == 0) |
a92713e6 RS |
13034 | format = 'd'; |
13035 | else | |
13036 | format = 0; | |
13037 | tokens = mips_parse_arguments (str + end, format); | |
13038 | if (!tokens) | |
13039 | return; | |
13040 | ||
60f20e8b RS |
13041 | if (!match_insns (insn, first, past, tokens, opcode_extra, FALSE) |
13042 | && !match_insns (insn, first, past, tokens, opcode_extra, TRUE)) | |
1661c76c | 13043 | set_insn_error (0, _("invalid operands")); |
df58fc94 | 13044 | |
e3de51ce | 13045 | obstack_free (&mips_operand_tokens, tokens); |
252b5132 RH |
13046 | } |
13047 | ||
77bd4346 RS |
13048 | /* As for mips_ip, but used when assembling MIPS16 code. |
13049 | Also set forced_insn_length to the resulting instruction size in | |
13050 | bytes if the user explicitly requested a small or extended instruction. */ | |
252b5132 RH |
13051 | |
13052 | static void | |
60f20e8b | 13053 | mips16_ip (char *str, struct mips_cl_insn *insn) |
252b5132 | 13054 | { |
1a00e612 | 13055 | char *end, *s, c; |
60f20e8b | 13056 | struct mips_opcode *first; |
a92713e6 | 13057 | struct mips_operand_token *tokens; |
252b5132 | 13058 | |
df58fc94 | 13059 | forced_insn_length = 0; |
252b5132 | 13060 | |
3882b010 | 13061 | for (s = str; ISLOWER (*s); ++s) |
252b5132 | 13062 | ; |
1a00e612 RS |
13063 | end = s; |
13064 | c = *end; | |
13065 | switch (c) | |
252b5132 RH |
13066 | { |
13067 | case '\0': | |
13068 | break; | |
13069 | ||
13070 | case ' ': | |
1a00e612 | 13071 | s++; |
252b5132 RH |
13072 | break; |
13073 | ||
13074 | case '.': | |
13075 | if (s[1] == 't' && s[2] == ' ') | |
13076 | { | |
df58fc94 | 13077 | forced_insn_length = 2; |
252b5132 RH |
13078 | s += 3; |
13079 | break; | |
13080 | } | |
13081 | else if (s[1] == 'e' && s[2] == ' ') | |
13082 | { | |
df58fc94 | 13083 | forced_insn_length = 4; |
252b5132 RH |
13084 | s += 3; |
13085 | break; | |
13086 | } | |
13087 | /* Fall through. */ | |
13088 | default: | |
1661c76c | 13089 | set_insn_error (0, _("unrecognized opcode")); |
252b5132 RH |
13090 | return; |
13091 | } | |
13092 | ||
df58fc94 RS |
13093 | if (mips_opts.noautoextend && !forced_insn_length) |
13094 | forced_insn_length = 2; | |
252b5132 | 13095 | |
1a00e612 | 13096 | *end = 0; |
60f20e8b | 13097 | first = (struct mips_opcode *) hash_find (mips16_op_hash, str); |
1a00e612 RS |
13098 | *end = c; |
13099 | ||
60f20e8b | 13100 | if (!first) |
252b5132 | 13101 | { |
1661c76c | 13102 | set_insn_error (0, _("unrecognized opcode")); |
252b5132 RH |
13103 | return; |
13104 | } | |
13105 | ||
a92713e6 RS |
13106 | tokens = mips_parse_arguments (s, 0); |
13107 | if (!tokens) | |
13108 | return; | |
13109 | ||
60f20e8b | 13110 | if (!match_mips16_insns (insn, first, tokens)) |
1661c76c | 13111 | set_insn_error (0, _("invalid operands")); |
252b5132 | 13112 | |
e3de51ce | 13113 | obstack_free (&mips_operand_tokens, tokens); |
252b5132 RH |
13114 | } |
13115 | ||
b886a2ab RS |
13116 | /* Marshal immediate value VAL for an extended MIPS16 instruction. |
13117 | NBITS is the number of significant bits in VAL. */ | |
13118 | ||
13119 | static unsigned long | |
13120 | mips16_immed_extend (offsetT val, unsigned int nbits) | |
13121 | { | |
13122 | int extval; | |
13123 | if (nbits == 16) | |
13124 | { | |
13125 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
13126 | val &= 0x1f; | |
13127 | } | |
13128 | else if (nbits == 15) | |
13129 | { | |
13130 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
13131 | val &= 0xf; | |
13132 | } | |
13133 | else | |
13134 | { | |
13135 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
13136 | val = 0; | |
13137 | } | |
13138 | return (extval << 16) | val; | |
13139 | } | |
13140 | ||
3ccad066 RS |
13141 | /* Like decode_mips16_operand, but require the operand to be defined and |
13142 | require it to be an integer. */ | |
13143 | ||
13144 | static const struct mips_int_operand * | |
13145 | mips16_immed_operand (int type, bfd_boolean extended_p) | |
13146 | { | |
13147 | const struct mips_operand *operand; | |
13148 | ||
13149 | operand = decode_mips16_operand (type, extended_p); | |
13150 | if (!operand || (operand->type != OP_INT && operand->type != OP_PCREL)) | |
13151 | abort (); | |
13152 | return (const struct mips_int_operand *) operand; | |
13153 | } | |
13154 | ||
13155 | /* Return true if SVAL fits OPERAND. RELOC is as for mips16_immed. */ | |
13156 | ||
13157 | static bfd_boolean | |
13158 | mips16_immed_in_range_p (const struct mips_int_operand *operand, | |
13159 | bfd_reloc_code_real_type reloc, offsetT sval) | |
13160 | { | |
13161 | int min_val, max_val; | |
13162 | ||
13163 | min_val = mips_int_operand_min (operand); | |
13164 | max_val = mips_int_operand_max (operand); | |
13165 | if (reloc != BFD_RELOC_UNUSED) | |
13166 | { | |
13167 | if (min_val < 0) | |
13168 | sval = SEXT_16BIT (sval); | |
13169 | else | |
13170 | sval &= 0xffff; | |
13171 | } | |
13172 | ||
13173 | return (sval >= min_val | |
13174 | && sval <= max_val | |
13175 | && (sval & ((1 << operand->shift) - 1)) == 0); | |
13176 | } | |
13177 | ||
5c04167a RS |
13178 | /* Install immediate value VAL into MIPS16 instruction *INSN, |
13179 | extending it if necessary. The instruction in *INSN may | |
13180 | already be extended. | |
13181 | ||
43c0598f RS |
13182 | RELOC is the relocation that produced VAL, or BFD_RELOC_UNUSED |
13183 | if none. In the former case, VAL is a 16-bit number with no | |
13184 | defined signedness. | |
13185 | ||
13186 | TYPE is the type of the immediate field. USER_INSN_LENGTH | |
13187 | is the length that the user requested, or 0 if none. */ | |
252b5132 RH |
13188 | |
13189 | static void | |
43c0598f RS |
13190 | mips16_immed (char *file, unsigned int line, int type, |
13191 | bfd_reloc_code_real_type reloc, offsetT val, | |
5c04167a | 13192 | unsigned int user_insn_length, unsigned long *insn) |
252b5132 | 13193 | { |
3ccad066 RS |
13194 | const struct mips_int_operand *operand; |
13195 | unsigned int uval, length; | |
252b5132 | 13196 | |
3ccad066 RS |
13197 | operand = mips16_immed_operand (type, FALSE); |
13198 | if (!mips16_immed_in_range_p (operand, reloc, val)) | |
5c04167a RS |
13199 | { |
13200 | /* We need an extended instruction. */ | |
13201 | if (user_insn_length == 2) | |
13202 | as_bad_where (file, line, _("invalid unextended operand value")); | |
13203 | else | |
13204 | *insn |= MIPS16_EXTEND; | |
13205 | } | |
13206 | else if (user_insn_length == 4) | |
13207 | { | |
13208 | /* The operand doesn't force an unextended instruction to be extended. | |
13209 | Warn if the user wanted an extended instruction anyway. */ | |
13210 | *insn |= MIPS16_EXTEND; | |
13211 | as_warn_where (file, line, | |
13212 | _("extended operand requested but not required")); | |
13213 | } | |
252b5132 | 13214 | |
3ccad066 RS |
13215 | length = mips16_opcode_length (*insn); |
13216 | if (length == 4) | |
252b5132 | 13217 | { |
3ccad066 RS |
13218 | operand = mips16_immed_operand (type, TRUE); |
13219 | if (!mips16_immed_in_range_p (operand, reloc, val)) | |
13220 | as_bad_where (file, line, | |
13221 | _("operand value out of range for instruction")); | |
252b5132 | 13222 | } |
3ccad066 RS |
13223 | uval = ((unsigned int) val >> operand->shift) - operand->bias; |
13224 | if (length == 2) | |
13225 | *insn = mips_insert_operand (&operand->root, *insn, uval); | |
252b5132 | 13226 | else |
3ccad066 | 13227 | *insn |= mips16_immed_extend (uval, operand->root.size); |
252b5132 RH |
13228 | } |
13229 | \f | |
d6f16593 | 13230 | struct percent_op_match |
ad8d3bb3 | 13231 | { |
5e0116d5 RS |
13232 | const char *str; |
13233 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
13234 | }; |
13235 | ||
13236 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 13237 | { |
5e0116d5 | 13238 | {"%lo", BFD_RELOC_LO16}, |
5e0116d5 RS |
13239 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
13240 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
13241 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
13242 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
13243 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
13244 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
13245 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
13246 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
13247 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
13248 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
13249 | {"%half", BFD_RELOC_16}, | |
13250 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
13251 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
13252 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
13253 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
13254 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
13255 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
13256 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
13257 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
13258 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
13259 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
5e0116d5 | 13260 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
13261 | }; |
13262 | ||
d6f16593 MR |
13263 | static const struct percent_op_match mips16_percent_op[] = |
13264 | { | |
13265 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
13266 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
738e5348 RS |
13267 | {"%got", BFD_RELOC_MIPS16_GOT16}, |
13268 | {"%call16", BFD_RELOC_MIPS16_CALL16}, | |
d0f13682 CLT |
13269 | {"%hi", BFD_RELOC_MIPS16_HI16_S}, |
13270 | {"%tlsgd", BFD_RELOC_MIPS16_TLS_GD}, | |
13271 | {"%tlsldm", BFD_RELOC_MIPS16_TLS_LDM}, | |
13272 | {"%dtprel_hi", BFD_RELOC_MIPS16_TLS_DTPREL_HI16}, | |
13273 | {"%dtprel_lo", BFD_RELOC_MIPS16_TLS_DTPREL_LO16}, | |
13274 | {"%tprel_hi", BFD_RELOC_MIPS16_TLS_TPREL_HI16}, | |
13275 | {"%tprel_lo", BFD_RELOC_MIPS16_TLS_TPREL_LO16}, | |
13276 | {"%gottprel", BFD_RELOC_MIPS16_TLS_GOTTPREL} | |
d6f16593 MR |
13277 | }; |
13278 | ||
252b5132 | 13279 | |
5e0116d5 RS |
13280 | /* Return true if *STR points to a relocation operator. When returning true, |
13281 | move *STR over the operator and store its relocation code in *RELOC. | |
13282 | Leave both *STR and *RELOC alone when returning false. */ | |
13283 | ||
13284 | static bfd_boolean | |
17a2f251 | 13285 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 13286 | { |
d6f16593 MR |
13287 | const struct percent_op_match *percent_op; |
13288 | size_t limit, i; | |
13289 | ||
13290 | if (mips_opts.mips16) | |
13291 | { | |
13292 | percent_op = mips16_percent_op; | |
13293 | limit = ARRAY_SIZE (mips16_percent_op); | |
13294 | } | |
13295 | else | |
13296 | { | |
13297 | percent_op = mips_percent_op; | |
13298 | limit = ARRAY_SIZE (mips_percent_op); | |
13299 | } | |
76b3015f | 13300 | |
d6f16593 | 13301 | for (i = 0; i < limit; i++) |
5e0116d5 | 13302 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 13303 | { |
3f98094e DJ |
13304 | int len = strlen (percent_op[i].str); |
13305 | ||
13306 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
13307 | continue; | |
13308 | ||
5e0116d5 RS |
13309 | *str += strlen (percent_op[i].str); |
13310 | *reloc = percent_op[i].reloc; | |
394f9b3a | 13311 | |
5e0116d5 RS |
13312 | /* Check whether the output BFD supports this relocation. |
13313 | If not, issue an error and fall back on something safe. */ | |
13314 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 13315 | { |
20203fb9 | 13316 | as_bad (_("relocation %s isn't supported by the current ABI"), |
5e0116d5 | 13317 | percent_op[i].str); |
01a3f561 | 13318 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 13319 | } |
5e0116d5 | 13320 | return TRUE; |
394f9b3a | 13321 | } |
5e0116d5 | 13322 | return FALSE; |
394f9b3a | 13323 | } |
ad8d3bb3 | 13324 | |
ad8d3bb3 | 13325 | |
5e0116d5 RS |
13326 | /* Parse string STR as a 16-bit relocatable operand. Store the |
13327 | expression in *EP and the relocations in the array starting | |
13328 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 13329 | |
01a3f561 | 13330 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 13331 | |
5e0116d5 | 13332 | static size_t |
17a2f251 TS |
13333 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
13334 | char *str) | |
ad8d3bb3 | 13335 | { |
5e0116d5 RS |
13336 | bfd_reloc_code_real_type reversed_reloc[3]; |
13337 | size_t reloc_index, i; | |
09b8f35a RS |
13338 | int crux_depth, str_depth; |
13339 | char *crux; | |
5e0116d5 RS |
13340 | |
13341 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
13342 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
13343 | of the main expression and with CRUX_DEPTH containing the number | |
13344 | of open brackets at that point. */ | |
13345 | reloc_index = -1; | |
13346 | str_depth = 0; | |
13347 | do | |
fb1b3232 | 13348 | { |
09b8f35a RS |
13349 | reloc_index++; |
13350 | crux = str; | |
13351 | crux_depth = str_depth; | |
13352 | ||
13353 | /* Skip over whitespace and brackets, keeping count of the number | |
13354 | of brackets. */ | |
13355 | while (*str == ' ' || *str == '\t' || *str == '(') | |
13356 | if (*str++ == '(') | |
13357 | str_depth++; | |
5e0116d5 | 13358 | } |
09b8f35a RS |
13359 | while (*str == '%' |
13360 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
13361 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 13362 | |
09b8f35a | 13363 | my_getExpression (ep, crux); |
5e0116d5 | 13364 | str = expr_end; |
394f9b3a | 13365 | |
5e0116d5 | 13366 | /* Match every open bracket. */ |
09b8f35a | 13367 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 13368 | if (*str++ == ')') |
09b8f35a | 13369 | crux_depth--; |
394f9b3a | 13370 | |
09b8f35a | 13371 | if (crux_depth > 0) |
20203fb9 | 13372 | as_bad (_("unclosed '('")); |
394f9b3a | 13373 | |
5e0116d5 | 13374 | expr_end = str; |
252b5132 | 13375 | |
01a3f561 | 13376 | if (reloc_index != 0) |
64bdfcaf RS |
13377 | { |
13378 | prev_reloc_op_frag = frag_now; | |
13379 | for (i = 0; i < reloc_index; i++) | |
13380 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
13381 | } | |
fb1b3232 | 13382 | |
5e0116d5 | 13383 | return reloc_index; |
252b5132 RH |
13384 | } |
13385 | ||
13386 | static void | |
17a2f251 | 13387 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
13388 | { |
13389 | char *save_in; | |
13390 | ||
13391 | save_in = input_line_pointer; | |
13392 | input_line_pointer = str; | |
13393 | expression (ep); | |
13394 | expr_end = input_line_pointer; | |
13395 | input_line_pointer = save_in; | |
252b5132 RH |
13396 | } |
13397 | ||
252b5132 | 13398 | char * |
17a2f251 | 13399 | md_atof (int type, char *litP, int *sizeP) |
252b5132 | 13400 | { |
499ac353 | 13401 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
252b5132 RH |
13402 | } |
13403 | ||
13404 | void | |
17a2f251 | 13405 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
13406 | { |
13407 | if (target_big_endian) | |
13408 | number_to_chars_bigendian (buf, val, n); | |
13409 | else | |
13410 | number_to_chars_littleendian (buf, val, n); | |
13411 | } | |
13412 | \f | |
e013f690 TS |
13413 | static int support_64bit_objects(void) |
13414 | { | |
13415 | const char **list, **l; | |
aa3d8fdf | 13416 | int yes; |
e013f690 TS |
13417 | |
13418 | list = bfd_target_list (); | |
13419 | for (l = list; *l != NULL; l++) | |
aeffff67 RS |
13420 | if (strcmp (*l, ELF_TARGET ("elf64-", "big")) == 0 |
13421 | || strcmp (*l, ELF_TARGET ("elf64-", "little")) == 0) | |
e013f690 | 13422 | break; |
aa3d8fdf | 13423 | yes = (*l != NULL); |
e013f690 | 13424 | free (list); |
aa3d8fdf | 13425 | return yes; |
e013f690 TS |
13426 | } |
13427 | ||
316f5878 RS |
13428 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
13429 | NEW_VALUE. Warn if another value was already specified. Note: | |
13430 | we have to defer parsing the -march and -mtune arguments in order | |
13431 | to handle 'from-abi' correctly, since the ABI might be specified | |
13432 | in a later argument. */ | |
13433 | ||
13434 | static void | |
17a2f251 | 13435 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
13436 | { |
13437 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
1661c76c | 13438 | as_warn (_("a different %s was already specified, is now %s"), |
316f5878 RS |
13439 | string_ptr == &mips_arch_string ? "-march" : "-mtune", |
13440 | new_value); | |
13441 | ||
13442 | *string_ptr = new_value; | |
13443 | } | |
13444 | ||
252b5132 | 13445 | int |
17a2f251 | 13446 | md_parse_option (int c, char *arg) |
252b5132 | 13447 | { |
c6278170 RS |
13448 | unsigned int i; |
13449 | ||
13450 | for (i = 0; i < ARRAY_SIZE (mips_ases); i++) | |
13451 | if (c == mips_ases[i].option_on || c == mips_ases[i].option_off) | |
13452 | { | |
13453 | file_ase_explicit |= mips_set_ase (&mips_ases[i], | |
13454 | c == mips_ases[i].option_on); | |
13455 | return 1; | |
13456 | } | |
13457 | ||
252b5132 RH |
13458 | switch (c) |
13459 | { | |
119d663a NC |
13460 | case OPTION_CONSTRUCT_FLOATS: |
13461 | mips_disable_float_construction = 0; | |
13462 | break; | |
bdaaa2e1 | 13463 | |
119d663a NC |
13464 | case OPTION_NO_CONSTRUCT_FLOATS: |
13465 | mips_disable_float_construction = 1; | |
13466 | break; | |
bdaaa2e1 | 13467 | |
252b5132 RH |
13468 | case OPTION_TRAP: |
13469 | mips_trap = 1; | |
13470 | break; | |
13471 | ||
13472 | case OPTION_BREAK: | |
13473 | mips_trap = 0; | |
13474 | break; | |
13475 | ||
13476 | case OPTION_EB: | |
13477 | target_big_endian = 1; | |
13478 | break; | |
13479 | ||
13480 | case OPTION_EL: | |
13481 | target_big_endian = 0; | |
13482 | break; | |
13483 | ||
13484 | case 'O': | |
4ffff32f TS |
13485 | if (arg == NULL) |
13486 | mips_optimize = 1; | |
13487 | else if (arg[0] == '0') | |
13488 | mips_optimize = 0; | |
13489 | else if (arg[0] == '1') | |
252b5132 RH |
13490 | mips_optimize = 1; |
13491 | else | |
13492 | mips_optimize = 2; | |
13493 | break; | |
13494 | ||
13495 | case 'g': | |
13496 | if (arg == NULL) | |
13497 | mips_debug = 2; | |
13498 | else | |
13499 | mips_debug = atoi (arg); | |
252b5132 RH |
13500 | break; |
13501 | ||
13502 | case OPTION_MIPS1: | |
316f5878 | 13503 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
13504 | break; |
13505 | ||
13506 | case OPTION_MIPS2: | |
316f5878 | 13507 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
13508 | break; |
13509 | ||
13510 | case OPTION_MIPS3: | |
316f5878 | 13511 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
13512 | break; |
13513 | ||
13514 | case OPTION_MIPS4: | |
316f5878 | 13515 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
13516 | break; |
13517 | ||
84ea6cf2 | 13518 | case OPTION_MIPS5: |
316f5878 | 13519 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
13520 | break; |
13521 | ||
e7af610e | 13522 | case OPTION_MIPS32: |
316f5878 | 13523 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
13524 | break; |
13525 | ||
af7ee8bf CD |
13526 | case OPTION_MIPS32R2: |
13527 | file_mips_isa = ISA_MIPS32R2; | |
13528 | break; | |
13529 | ||
5f74bc13 CD |
13530 | case OPTION_MIPS64R2: |
13531 | file_mips_isa = ISA_MIPS64R2; | |
13532 | break; | |
13533 | ||
84ea6cf2 | 13534 | case OPTION_MIPS64: |
316f5878 | 13535 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
13536 | break; |
13537 | ||
ec68c924 | 13538 | case OPTION_MTUNE: |
316f5878 RS |
13539 | mips_set_option_string (&mips_tune_string, arg); |
13540 | break; | |
ec68c924 | 13541 | |
316f5878 RS |
13542 | case OPTION_MARCH: |
13543 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
13544 | break; |
13545 | ||
13546 | case OPTION_M4650: | |
316f5878 RS |
13547 | mips_set_option_string (&mips_arch_string, "4650"); |
13548 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
13549 | break; |
13550 | ||
13551 | case OPTION_NO_M4650: | |
13552 | break; | |
13553 | ||
13554 | case OPTION_M4010: | |
316f5878 RS |
13555 | mips_set_option_string (&mips_arch_string, "4010"); |
13556 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
13557 | break; |
13558 | ||
13559 | case OPTION_NO_M4010: | |
13560 | break; | |
13561 | ||
13562 | case OPTION_M4100: | |
316f5878 RS |
13563 | mips_set_option_string (&mips_arch_string, "4100"); |
13564 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
13565 | break; |
13566 | ||
13567 | case OPTION_NO_M4100: | |
13568 | break; | |
13569 | ||
252b5132 | 13570 | case OPTION_M3900: |
316f5878 RS |
13571 | mips_set_option_string (&mips_arch_string, "3900"); |
13572 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 13573 | break; |
bdaaa2e1 | 13574 | |
252b5132 RH |
13575 | case OPTION_NO_M3900: |
13576 | break; | |
13577 | ||
df58fc94 RS |
13578 | case OPTION_MICROMIPS: |
13579 | if (mips_opts.mips16 == 1) | |
13580 | { | |
13581 | as_bad (_("-mmicromips cannot be used with -mips16")); | |
13582 | return 0; | |
13583 | } | |
13584 | mips_opts.micromips = 1; | |
13585 | mips_no_prev_insn (); | |
13586 | break; | |
13587 | ||
13588 | case OPTION_NO_MICROMIPS: | |
13589 | mips_opts.micromips = 0; | |
13590 | mips_no_prev_insn (); | |
13591 | break; | |
13592 | ||
252b5132 | 13593 | case OPTION_MIPS16: |
df58fc94 RS |
13594 | if (mips_opts.micromips == 1) |
13595 | { | |
13596 | as_bad (_("-mips16 cannot be used with -micromips")); | |
13597 | return 0; | |
13598 | } | |
252b5132 | 13599 | mips_opts.mips16 = 1; |
7d10b47d | 13600 | mips_no_prev_insn (); |
252b5132 RH |
13601 | break; |
13602 | ||
13603 | case OPTION_NO_MIPS16: | |
13604 | mips_opts.mips16 = 0; | |
7d10b47d | 13605 | mips_no_prev_insn (); |
252b5132 RH |
13606 | break; |
13607 | ||
6a32d874 CM |
13608 | case OPTION_FIX_24K: |
13609 | mips_fix_24k = 1; | |
13610 | break; | |
13611 | ||
13612 | case OPTION_NO_FIX_24K: | |
13613 | mips_fix_24k = 0; | |
13614 | break; | |
13615 | ||
a8d14a88 CM |
13616 | case OPTION_FIX_RM7000: |
13617 | mips_fix_rm7000 = 1; | |
13618 | break; | |
13619 | ||
13620 | case OPTION_NO_FIX_RM7000: | |
13621 | mips_fix_rm7000 = 0; | |
13622 | break; | |
13623 | ||
c67a084a NC |
13624 | case OPTION_FIX_LOONGSON2F_JUMP: |
13625 | mips_fix_loongson2f_jump = TRUE; | |
13626 | break; | |
13627 | ||
13628 | case OPTION_NO_FIX_LOONGSON2F_JUMP: | |
13629 | mips_fix_loongson2f_jump = FALSE; | |
13630 | break; | |
13631 | ||
13632 | case OPTION_FIX_LOONGSON2F_NOP: | |
13633 | mips_fix_loongson2f_nop = TRUE; | |
13634 | break; | |
13635 | ||
13636 | case OPTION_NO_FIX_LOONGSON2F_NOP: | |
13637 | mips_fix_loongson2f_nop = FALSE; | |
13638 | break; | |
13639 | ||
d766e8ec RS |
13640 | case OPTION_FIX_VR4120: |
13641 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
13642 | break; |
13643 | ||
d766e8ec RS |
13644 | case OPTION_NO_FIX_VR4120: |
13645 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
13646 | break; |
13647 | ||
7d8e00cf RS |
13648 | case OPTION_FIX_VR4130: |
13649 | mips_fix_vr4130 = 1; | |
13650 | break; | |
13651 | ||
13652 | case OPTION_NO_FIX_VR4130: | |
13653 | mips_fix_vr4130 = 0; | |
13654 | break; | |
13655 | ||
d954098f DD |
13656 | case OPTION_FIX_CN63XXP1: |
13657 | mips_fix_cn63xxp1 = TRUE; | |
13658 | break; | |
13659 | ||
13660 | case OPTION_NO_FIX_CN63XXP1: | |
13661 | mips_fix_cn63xxp1 = FALSE; | |
13662 | break; | |
13663 | ||
4a6a3df4 AO |
13664 | case OPTION_RELAX_BRANCH: |
13665 | mips_relax_branch = 1; | |
13666 | break; | |
13667 | ||
13668 | case OPTION_NO_RELAX_BRANCH: | |
13669 | mips_relax_branch = 0; | |
13670 | break; | |
13671 | ||
833794fc MR |
13672 | case OPTION_INSN32: |
13673 | mips_opts.insn32 = TRUE; | |
13674 | break; | |
13675 | ||
13676 | case OPTION_NO_INSN32: | |
13677 | mips_opts.insn32 = FALSE; | |
13678 | break; | |
13679 | ||
aa6975fb ILT |
13680 | case OPTION_MSHARED: |
13681 | mips_in_shared = TRUE; | |
13682 | break; | |
13683 | ||
13684 | case OPTION_MNO_SHARED: | |
13685 | mips_in_shared = FALSE; | |
13686 | break; | |
13687 | ||
aed1a261 RS |
13688 | case OPTION_MSYM32: |
13689 | mips_opts.sym32 = TRUE; | |
13690 | break; | |
13691 | ||
13692 | case OPTION_MNO_SYM32: | |
13693 | mips_opts.sym32 = FALSE; | |
13694 | break; | |
13695 | ||
252b5132 RH |
13696 | /* When generating ELF code, we permit -KPIC and -call_shared to |
13697 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
13698 | intended to be compatible with Irix 5. */ | |
13699 | case OPTION_CALL_SHARED: | |
252b5132 | 13700 | mips_pic = SVR4_PIC; |
143d77c5 | 13701 | mips_abicalls = TRUE; |
252b5132 RH |
13702 | break; |
13703 | ||
861fb55a | 13704 | case OPTION_CALL_NONPIC: |
861fb55a DJ |
13705 | mips_pic = NO_PIC; |
13706 | mips_abicalls = TRUE; | |
13707 | break; | |
13708 | ||
252b5132 | 13709 | case OPTION_NON_SHARED: |
252b5132 | 13710 | mips_pic = NO_PIC; |
143d77c5 | 13711 | mips_abicalls = FALSE; |
252b5132 RH |
13712 | break; |
13713 | ||
44075ae2 TS |
13714 | /* The -xgot option tells the assembler to use 32 bit offsets |
13715 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
13716 | compatibility. */ |
13717 | case OPTION_XGOT: | |
13718 | mips_big_got = 1; | |
13719 | break; | |
13720 | ||
13721 | case 'G': | |
6caf9ef4 TS |
13722 | g_switch_value = atoi (arg); |
13723 | g_switch_seen = 1; | |
252b5132 RH |
13724 | break; |
13725 | ||
34ba82a8 TS |
13726 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
13727 | and -mabi=64. */ | |
252b5132 | 13728 | case OPTION_32: |
f3ded42a | 13729 | mips_abi = O32_ABI; |
252b5132 RH |
13730 | break; |
13731 | ||
e013f690 | 13732 | case OPTION_N32: |
316f5878 | 13733 | mips_abi = N32_ABI; |
e013f690 | 13734 | break; |
252b5132 | 13735 | |
e013f690 | 13736 | case OPTION_64: |
316f5878 | 13737 | mips_abi = N64_ABI; |
f43abd2b | 13738 | if (!support_64bit_objects()) |
1661c76c | 13739 | as_fatal (_("no compiled in support for 64 bit object file format")); |
252b5132 RH |
13740 | break; |
13741 | ||
c97ef257 | 13742 | case OPTION_GP32: |
a325df1d | 13743 | file_mips_gp32 = 1; |
c97ef257 AH |
13744 | break; |
13745 | ||
13746 | case OPTION_GP64: | |
a325df1d | 13747 | file_mips_gp32 = 0; |
c97ef257 | 13748 | break; |
252b5132 | 13749 | |
ca4e0257 | 13750 | case OPTION_FP32: |
a325df1d | 13751 | file_mips_fp32 = 1; |
316f5878 RS |
13752 | break; |
13753 | ||
13754 | case OPTION_FP64: | |
13755 | file_mips_fp32 = 0; | |
ca4e0257 RS |
13756 | break; |
13757 | ||
037b32b9 AN |
13758 | case OPTION_SINGLE_FLOAT: |
13759 | file_mips_single_float = 1; | |
13760 | break; | |
13761 | ||
13762 | case OPTION_DOUBLE_FLOAT: | |
13763 | file_mips_single_float = 0; | |
13764 | break; | |
13765 | ||
13766 | case OPTION_SOFT_FLOAT: | |
13767 | file_mips_soft_float = 1; | |
13768 | break; | |
13769 | ||
13770 | case OPTION_HARD_FLOAT: | |
13771 | file_mips_soft_float = 0; | |
13772 | break; | |
13773 | ||
252b5132 | 13774 | case OPTION_MABI: |
e013f690 | 13775 | if (strcmp (arg, "32") == 0) |
316f5878 | 13776 | mips_abi = O32_ABI; |
e013f690 | 13777 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 13778 | mips_abi = O64_ABI; |
e013f690 | 13779 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 13780 | mips_abi = N32_ABI; |
e013f690 TS |
13781 | else if (strcmp (arg, "64") == 0) |
13782 | { | |
316f5878 | 13783 | mips_abi = N64_ABI; |
e013f690 | 13784 | if (! support_64bit_objects()) |
1661c76c | 13785 | as_fatal (_("no compiled in support for 64 bit object file " |
e013f690 TS |
13786 | "format")); |
13787 | } | |
13788 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 13789 | mips_abi = EABI_ABI; |
e013f690 | 13790 | else |
da0e507f TS |
13791 | { |
13792 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
13793 | return 0; | |
13794 | } | |
252b5132 RH |
13795 | break; |
13796 | ||
6b76fefe | 13797 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 13798 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
13799 | break; |
13800 | ||
9ee72ff1 | 13801 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 13802 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
13803 | break; |
13804 | ||
ecb4347a | 13805 | case OPTION_MDEBUG: |
b34976b6 | 13806 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
13807 | break; |
13808 | ||
13809 | case OPTION_NO_MDEBUG: | |
b34976b6 | 13810 | mips_flag_mdebug = FALSE; |
ecb4347a | 13811 | break; |
dcd410fe RO |
13812 | |
13813 | case OPTION_PDR: | |
13814 | mips_flag_pdr = TRUE; | |
13815 | break; | |
13816 | ||
13817 | case OPTION_NO_PDR: | |
13818 | mips_flag_pdr = FALSE; | |
13819 | break; | |
0a44bf69 RS |
13820 | |
13821 | case OPTION_MVXWORKS_PIC: | |
13822 | mips_pic = VXWORKS_PIC; | |
13823 | break; | |
ecb4347a | 13824 | |
ba92f887 MR |
13825 | case OPTION_NAN: |
13826 | if (strcmp (arg, "2008") == 0) | |
13827 | mips_flag_nan2008 = TRUE; | |
13828 | else if (strcmp (arg, "legacy") == 0) | |
13829 | mips_flag_nan2008 = FALSE; | |
13830 | else | |
13831 | { | |
1661c76c | 13832 | as_fatal (_("invalid NaN setting -mnan=%s"), arg); |
ba92f887 MR |
13833 | return 0; |
13834 | } | |
13835 | break; | |
13836 | ||
252b5132 RH |
13837 | default: |
13838 | return 0; | |
13839 | } | |
13840 | ||
c67a084a NC |
13841 | mips_fix_loongson2f = mips_fix_loongson2f_nop || mips_fix_loongson2f_jump; |
13842 | ||
252b5132 RH |
13843 | return 1; |
13844 | } | |
316f5878 RS |
13845 | \f |
13846 | /* Set up globals to generate code for the ISA or processor | |
13847 | described by INFO. */ | |
252b5132 | 13848 | |
252b5132 | 13849 | static void |
17a2f251 | 13850 | mips_set_architecture (const struct mips_cpu_info *info) |
252b5132 | 13851 | { |
316f5878 | 13852 | if (info != 0) |
252b5132 | 13853 | { |
fef14a42 TS |
13854 | file_mips_arch = info->cpu; |
13855 | mips_opts.arch = info->cpu; | |
316f5878 | 13856 | mips_opts.isa = info->isa; |
252b5132 | 13857 | } |
252b5132 RH |
13858 | } |
13859 | ||
252b5132 | 13860 | |
316f5878 | 13861 | /* Likewise for tuning. */ |
252b5132 | 13862 | |
316f5878 | 13863 | static void |
17a2f251 | 13864 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
13865 | { |
13866 | if (info != 0) | |
fef14a42 | 13867 | mips_tune = info->cpu; |
316f5878 | 13868 | } |
80cc45a5 | 13869 | |
34ba82a8 | 13870 | |
252b5132 | 13871 | void |
17a2f251 | 13872 | mips_after_parse_args (void) |
e9670677 | 13873 | { |
fef14a42 TS |
13874 | const struct mips_cpu_info *arch_info = 0; |
13875 | const struct mips_cpu_info *tune_info = 0; | |
13876 | ||
e9670677 | 13877 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 13878 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 13879 | { |
6caf9ef4 | 13880 | if (g_switch_seen && g_switch_value != 0) |
1661c76c | 13881 | as_bad (_("-G not supported in this configuration")); |
e9670677 MR |
13882 | g_switch_value = 0; |
13883 | } | |
13884 | ||
cac012d6 AO |
13885 | if (mips_abi == NO_ABI) |
13886 | mips_abi = MIPS_DEFAULT_ABI; | |
13887 | ||
22923709 RS |
13888 | /* The following code determines the architecture and register size. |
13889 | Similar code was added to GCC 3.3 (see override_options() in | |
13890 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
13891 | as much as possible. */ | |
e9670677 | 13892 | |
316f5878 | 13893 | if (mips_arch_string != 0) |
fef14a42 | 13894 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 13895 | |
316f5878 | 13896 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 13897 | { |
316f5878 | 13898 | /* Handle -mipsN. At this point, file_mips_isa contains the |
fef14a42 | 13899 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 13900 | the -march selection (if any). */ |
fef14a42 | 13901 | if (arch_info != 0) |
e9670677 | 13902 | { |
316f5878 RS |
13903 | /* -march takes precedence over -mipsN, since it is more descriptive. |
13904 | There's no harm in specifying both as long as the ISA levels | |
13905 | are the same. */ | |
fef14a42 | 13906 | if (file_mips_isa != arch_info->isa) |
1661c76c RS |
13907 | as_bad (_("-%s conflicts with the other architecture options," |
13908 | " which imply -%s"), | |
316f5878 | 13909 | mips_cpu_info_from_isa (file_mips_isa)->name, |
fef14a42 | 13910 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 13911 | } |
316f5878 | 13912 | else |
fef14a42 | 13913 | arch_info = mips_cpu_info_from_isa (file_mips_isa); |
e9670677 MR |
13914 | } |
13915 | ||
fef14a42 | 13916 | if (arch_info == 0) |
95bfe26e MF |
13917 | { |
13918 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
13919 | gas_assert (arch_info); | |
13920 | } | |
e9670677 | 13921 | |
fef14a42 | 13922 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
20203fb9 | 13923 | as_bad (_("-march=%s is not compatible with the selected ABI"), |
fef14a42 TS |
13924 | arch_info->name); |
13925 | ||
13926 | mips_set_architecture (arch_info); | |
13927 | ||
13928 | /* Optimize for file_mips_arch, unless -mtune selects a different processor. */ | |
13929 | if (mips_tune_string != 0) | |
13930 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 13931 | |
fef14a42 TS |
13932 | if (tune_info == 0) |
13933 | mips_set_tune (arch_info); | |
13934 | else | |
13935 | mips_set_tune (tune_info); | |
e9670677 | 13936 | |
316f5878 | 13937 | if (file_mips_gp32 >= 0) |
e9670677 | 13938 | { |
316f5878 RS |
13939 | /* The user specified the size of the integer registers. Make sure |
13940 | it agrees with the ABI and ISA. */ | |
13941 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
13942 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
13943 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
13944 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
13945 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
13946 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
13947 | } |
13948 | else | |
13949 | { | |
316f5878 RS |
13950 | /* Infer the integer register size from the ABI and processor. |
13951 | Restrict ourselves to 32-bit registers if that's all the | |
13952 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
13953 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
13954 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
13955 | } |
13956 | ||
ad3fea08 TS |
13957 | switch (file_mips_fp32) |
13958 | { | |
13959 | default: | |
13960 | case -1: | |
13961 | /* No user specified float register size. | |
13962 | ??? GAS treats single-float processors as though they had 64-bit | |
13963 | float registers (although it complains when double-precision | |
13964 | instructions are used). As things stand, saying they have 32-bit | |
13965 | registers would lead to spurious "register must be even" messages. | |
13966 | So here we assume float registers are never smaller than the | |
13967 | integer ones. */ | |
13968 | if (file_mips_gp32 == 0) | |
13969 | /* 64-bit integer registers implies 64-bit float registers. */ | |
13970 | file_mips_fp32 = 0; | |
c6278170 | 13971 | else if ((mips_opts.ase & FP64_ASES) |
ad3fea08 TS |
13972 | && ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
13973 | /* -mips3d and -mdmx imply 64-bit float registers, if possible. */ | |
13974 | file_mips_fp32 = 0; | |
13975 | else | |
13976 | /* 32-bit float registers. */ | |
13977 | file_mips_fp32 = 1; | |
13978 | break; | |
13979 | ||
13980 | /* The user specified the size of the float registers. Check if it | |
13981 | agrees with the ABI and ISA. */ | |
13982 | case 0: | |
13983 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
13984 | as_bad (_("-mfp64 used with a 32-bit fpu")); | |
13985 | else if (ABI_NEEDS_32BIT_REGS (mips_abi) | |
13986 | && !ISA_HAS_MXHC1 (mips_opts.isa)) | |
13987 | as_warn (_("-mfp64 used with a 32-bit ABI")); | |
13988 | break; | |
13989 | case 1: | |
13990 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
13991 | as_warn (_("-mfp32 used with a 64-bit ABI")); | |
13992 | break; | |
13993 | } | |
e9670677 | 13994 | |
316f5878 | 13995 | /* End of GCC-shared inference code. */ |
e9670677 | 13996 | |
17a2f251 TS |
13997 | /* This flag is set when we have a 64-bit capable CPU but use only |
13998 | 32-bit wide registers. Note that EABI does not use it. */ | |
13999 | if (ISA_HAS_64BIT_REGS (mips_opts.isa) | |
14000 | && ((mips_abi == NO_ABI && file_mips_gp32 == 1) | |
14001 | || mips_abi == O32_ABI)) | |
316f5878 | 14002 | mips_32bitmode = 1; |
e9670677 MR |
14003 | |
14004 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
14005 | as_bad (_("trap exception not supported at ISA 1")); | |
14006 | ||
e9670677 MR |
14007 | /* If the selected architecture includes support for ASEs, enable |
14008 | generation of code for them. */ | |
a4672219 | 14009 | if (mips_opts.mips16 == -1) |
fef14a42 | 14010 | mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_arch)) ? 1 : 0; |
df58fc94 RS |
14011 | if (mips_opts.micromips == -1) |
14012 | mips_opts.micromips = (CPU_HAS_MICROMIPS (file_mips_arch)) ? 1 : 0; | |
846ef2d0 RS |
14013 | |
14014 | /* MIPS3D and MDMX require 64-bit FPRs, so -mfp32 should stop those | |
14015 | ASEs from being selected implicitly. */ | |
14016 | if (file_mips_fp32 == 1) | |
14017 | file_ase_explicit |= ASE_MIPS3D | ASE_MDMX; | |
14018 | ||
14019 | /* If the user didn't explicitly select or deselect a particular ASE, | |
14020 | use the default setting for the CPU. */ | |
14021 | mips_opts.ase |= (arch_info->ase & ~file_ase_explicit); | |
14022 | ||
e9670677 | 14023 | file_mips_isa = mips_opts.isa; |
846ef2d0 | 14024 | file_ase = mips_opts.ase; |
e9670677 MR |
14025 | mips_opts.gp32 = file_mips_gp32; |
14026 | mips_opts.fp32 = file_mips_fp32; | |
037b32b9 AN |
14027 | mips_opts.soft_float = file_mips_soft_float; |
14028 | mips_opts.single_float = file_mips_single_float; | |
e9670677 | 14029 | |
c6278170 RS |
14030 | mips_check_isa_supports_ases (); |
14031 | ||
ecb4347a | 14032 | if (mips_flag_mdebug < 0) |
e8044f35 | 14033 | mips_flag_mdebug = 0; |
e9670677 MR |
14034 | } |
14035 | \f | |
14036 | void | |
17a2f251 | 14037 | mips_init_after_args (void) |
252b5132 RH |
14038 | { |
14039 | /* initialize opcodes */ | |
14040 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 14041 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
14042 | } |
14043 | ||
14044 | long | |
17a2f251 | 14045 | md_pcrel_from (fixS *fixP) |
252b5132 | 14046 | { |
a7ebbfdf TS |
14047 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
14048 | switch (fixP->fx_r_type) | |
14049 | { | |
df58fc94 RS |
14050 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
14051 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
14052 | /* Return the address of the delay slot. */ | |
14053 | return addr + 2; | |
14054 | ||
14055 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
14056 | case BFD_RELOC_MICROMIPS_JMP: | |
a7ebbfdf TS |
14057 | case BFD_RELOC_16_PCREL_S2: |
14058 | case BFD_RELOC_MIPS_JMP: | |
14059 | /* Return the address of the delay slot. */ | |
14060 | return addr + 4; | |
df58fc94 | 14061 | |
b47468a6 CM |
14062 | case BFD_RELOC_32_PCREL: |
14063 | return addr; | |
14064 | ||
a7ebbfdf | 14065 | default: |
58ea3d6a | 14066 | /* We have no relocation type for PC relative MIPS16 instructions. */ |
64817874 TS |
14067 | if (fixP->fx_addsy && S_GET_SEGMENT (fixP->fx_addsy) != now_seg) |
14068 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1661c76c RS |
14069 | _("PC relative MIPS16 instruction references" |
14070 | " a different section")); | |
a7ebbfdf TS |
14071 | return addr; |
14072 | } | |
252b5132 RH |
14073 | } |
14074 | ||
252b5132 RH |
14075 | /* This is called before the symbol table is processed. In order to |
14076 | work with gcc when using mips-tfile, we must keep all local labels. | |
14077 | However, in other cases, we want to discard them. If we were | |
14078 | called with -g, but we didn't see any debugging information, it may | |
14079 | mean that gcc is smuggling debugging information through to | |
14080 | mips-tfile, in which case we must generate all local labels. */ | |
14081 | ||
14082 | void | |
17a2f251 | 14083 | mips_frob_file_before_adjust (void) |
252b5132 RH |
14084 | { |
14085 | #ifndef NO_ECOFF_DEBUGGING | |
14086 | if (ECOFF_DEBUGGING | |
14087 | && mips_debug != 0 | |
14088 | && ! ecoff_debugging_seen) | |
14089 | flag_keep_locals = 1; | |
14090 | #endif | |
14091 | } | |
14092 | ||
3b91255e | 14093 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 14094 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
14095 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
14096 | relocation operators. | |
14097 | ||
14098 | For our purposes, a %lo() expression matches a %got() or %hi() | |
14099 | expression if: | |
14100 | ||
14101 | (a) it refers to the same symbol; and | |
14102 | (b) the offset applied in the %lo() expression is no lower than | |
14103 | the offset applied in the %got() or %hi(). | |
14104 | ||
14105 | (b) allows us to cope with code like: | |
14106 | ||
14107 | lui $4,%hi(foo) | |
14108 | lh $4,%lo(foo+2)($4) | |
14109 | ||
14110 | ...which is legal on RELA targets, and has a well-defined behaviour | |
14111 | if the user knows that adding 2 to "foo" will not induce a carry to | |
14112 | the high 16 bits. | |
14113 | ||
14114 | When several %lo()s match a particular %got() or %hi(), we use the | |
14115 | following rules to distinguish them: | |
14116 | ||
14117 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
14118 | higher offsets. | |
14119 | ||
14120 | (2) %lo()s with no matching %got() or %hi() are better than those | |
14121 | that already have a matching %got() or %hi(). | |
14122 | ||
14123 | (3) later %lo()s are better than earlier %lo()s. | |
14124 | ||
14125 | These rules are applied in order. | |
14126 | ||
14127 | (1) means, among other things, that %lo()s with identical offsets are | |
14128 | chosen if they exist. | |
14129 | ||
14130 | (2) means that we won't associate several high-part relocations with | |
14131 | the same low-part relocation unless there's no alternative. Having | |
14132 | several high parts for the same low part is a GNU extension; this rule | |
14133 | allows careful users to avoid it. | |
14134 | ||
14135 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
14136 | with the last high-part relocation being at the front of the list. | |
14137 | It therefore makes sense to choose the last matching low-part | |
14138 | relocation, all other things being equal. It's also easier | |
14139 | to code that way. */ | |
252b5132 RH |
14140 | |
14141 | void | |
17a2f251 | 14142 | mips_frob_file (void) |
252b5132 RH |
14143 | { |
14144 | struct mips_hi_fixup *l; | |
35903be0 | 14145 | bfd_reloc_code_real_type looking_for_rtype = BFD_RELOC_UNUSED; |
252b5132 RH |
14146 | |
14147 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
14148 | { | |
14149 | segment_info_type *seginfo; | |
3b91255e RS |
14150 | bfd_boolean matched_lo_p; |
14151 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 14152 | |
9c2799c2 | 14153 | gas_assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 14154 | |
5919d012 | 14155 | /* If a GOT16 relocation turns out to be against a global symbol, |
b886a2ab RS |
14156 | there isn't supposed to be a matching LO. Ignore %gots against |
14157 | constants; we'll report an error for those later. */ | |
738e5348 | 14158 | if (got16_reloc_p (l->fixp->fx_r_type) |
b886a2ab RS |
14159 | && !(l->fixp->fx_addsy |
14160 | && pic_need_relax (l->fixp->fx_addsy, l->seg))) | |
5919d012 RS |
14161 | continue; |
14162 | ||
14163 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
14164 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
14165 | continue; |
14166 | ||
252b5132 | 14167 | seginfo = seg_info (l->seg); |
252b5132 | 14168 | |
3b91255e RS |
14169 | /* Set HI_POS to the position of this relocation in the chain. |
14170 | Set LO_POS to the position of the chosen low-part relocation. | |
14171 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
14172 | relocation that matches an immediately-preceding high-part | |
14173 | relocation. */ | |
14174 | hi_pos = NULL; | |
14175 | lo_pos = NULL; | |
14176 | matched_lo_p = FALSE; | |
738e5348 | 14177 | looking_for_rtype = matching_lo_reloc (l->fixp->fx_r_type); |
35903be0 | 14178 | |
3b91255e RS |
14179 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) |
14180 | { | |
14181 | if (*pos == l->fixp) | |
14182 | hi_pos = pos; | |
14183 | ||
35903be0 | 14184 | if ((*pos)->fx_r_type == looking_for_rtype |
30cfc97a | 14185 | && symbol_same_p ((*pos)->fx_addsy, l->fixp->fx_addsy) |
3b91255e RS |
14186 | && (*pos)->fx_offset >= l->fixp->fx_offset |
14187 | && (lo_pos == NULL | |
14188 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
14189 | || (!matched_lo_p | |
14190 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
14191 | lo_pos = pos; | |
14192 | ||
14193 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
14194 | && fixup_has_matching_lo_p (*pos)); | |
14195 | } | |
14196 | ||
14197 | /* If we found a match, remove the high-part relocation from its | |
14198 | current position and insert it before the low-part relocation. | |
14199 | Make the offsets match so that fixup_has_matching_lo_p() | |
14200 | will return true. | |
14201 | ||
14202 | We don't warn about unmatched high-part relocations since some | |
14203 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
14204 | instructions. */ | |
14205 | if (lo_pos != NULL) | |
14206 | { | |
14207 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
14208 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 14209 | { |
3b91255e RS |
14210 | *hi_pos = l->fixp->fx_next; |
14211 | l->fixp->fx_next = *lo_pos; | |
14212 | *lo_pos = l->fixp; | |
252b5132 | 14213 | } |
252b5132 RH |
14214 | } |
14215 | } | |
14216 | } | |
14217 | ||
252b5132 | 14218 | int |
17a2f251 | 14219 | mips_force_relocation (fixS *fixp) |
252b5132 | 14220 | { |
ae6063d4 | 14221 | if (generic_force_reloc (fixp)) |
252b5132 RH |
14222 | return 1; |
14223 | ||
df58fc94 RS |
14224 | /* We want to keep BFD_RELOC_MICROMIPS_*_PCREL_S1 relocation, |
14225 | so that the linker relaxation can update targets. */ | |
14226 | if (fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
14227 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
14228 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1) | |
14229 | return 1; | |
14230 | ||
3e722fb5 | 14231 | return 0; |
252b5132 RH |
14232 | } |
14233 | ||
b886a2ab RS |
14234 | /* Read the instruction associated with RELOC from BUF. */ |
14235 | ||
14236 | static unsigned int | |
14237 | read_reloc_insn (char *buf, bfd_reloc_code_real_type reloc) | |
14238 | { | |
14239 | if (mips16_reloc_p (reloc) || micromips_reloc_p (reloc)) | |
14240 | return read_compressed_insn (buf, 4); | |
14241 | else | |
14242 | return read_insn (buf); | |
14243 | } | |
14244 | ||
14245 | /* Write instruction INSN to BUF, given that it has been relocated | |
14246 | by RELOC. */ | |
14247 | ||
14248 | static void | |
14249 | write_reloc_insn (char *buf, bfd_reloc_code_real_type reloc, | |
14250 | unsigned long insn) | |
14251 | { | |
14252 | if (mips16_reloc_p (reloc) || micromips_reloc_p (reloc)) | |
14253 | write_compressed_insn (buf, insn, 4); | |
14254 | else | |
14255 | write_insn (buf, insn); | |
14256 | } | |
14257 | ||
252b5132 RH |
14258 | /* Apply a fixup to the object file. */ |
14259 | ||
94f592af | 14260 | void |
55cf6793 | 14261 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 14262 | { |
4d68580a | 14263 | char *buf; |
b886a2ab | 14264 | unsigned long insn; |
a7ebbfdf | 14265 | reloc_howto_type *howto; |
252b5132 | 14266 | |
a7ebbfdf TS |
14267 | /* We ignore generic BFD relocations we don't know about. */ |
14268 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
14269 | if (! howto) | |
14270 | return; | |
65551fa4 | 14271 | |
df58fc94 RS |
14272 | gas_assert (fixP->fx_size == 2 |
14273 | || fixP->fx_size == 4 | |
90ecf173 MR |
14274 | || fixP->fx_r_type == BFD_RELOC_16 |
14275 | || fixP->fx_r_type == BFD_RELOC_64 | |
14276 | || fixP->fx_r_type == BFD_RELOC_CTOR | |
14277 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
df58fc94 | 14278 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_SUB |
90ecf173 MR |
14279 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
14280 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY | |
14281 | || fixP->fx_r_type == BFD_RELOC_MIPS_TLS_DTPREL64); | |
252b5132 | 14282 | |
4d68580a | 14283 | buf = fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 | 14284 | |
df58fc94 RS |
14285 | gas_assert (!fixP->fx_pcrel || fixP->fx_r_type == BFD_RELOC_16_PCREL_S2 |
14286 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
14287 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
b47468a6 CM |
14288 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1 |
14289 | || fixP->fx_r_type == BFD_RELOC_32_PCREL); | |
b1dca8ee RS |
14290 | |
14291 | /* Don't treat parts of a composite relocation as done. There are two | |
14292 | reasons for this: | |
14293 | ||
14294 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
14295 | should nevertheless be emitted if the first part is. | |
14296 | ||
14297 | (2) In normal usage, composite relocations are never assembly-time | |
14298 | constants. The easiest way of dealing with the pathological | |
14299 | exceptions is to generate a relocation against STN_UNDEF and | |
14300 | leave everything up to the linker. */ | |
3994f87e | 14301 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
14302 | fixP->fx_done = 1; |
14303 | ||
14304 | switch (fixP->fx_r_type) | |
14305 | { | |
3f98094e DJ |
14306 | case BFD_RELOC_MIPS_TLS_GD: |
14307 | case BFD_RELOC_MIPS_TLS_LDM: | |
741d6ea8 JM |
14308 | case BFD_RELOC_MIPS_TLS_DTPREL32: |
14309 | case BFD_RELOC_MIPS_TLS_DTPREL64: | |
3f98094e DJ |
14310 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: |
14311 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
14312 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
d0f13682 CLT |
14313 | case BFD_RELOC_MIPS_TLS_TPREL32: |
14314 | case BFD_RELOC_MIPS_TLS_TPREL64: | |
3f98094e DJ |
14315 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: |
14316 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
df58fc94 RS |
14317 | case BFD_RELOC_MICROMIPS_TLS_GD: |
14318 | case BFD_RELOC_MICROMIPS_TLS_LDM: | |
14319 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16: | |
14320 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16: | |
14321 | case BFD_RELOC_MICROMIPS_TLS_GOTTPREL: | |
14322 | case BFD_RELOC_MICROMIPS_TLS_TPREL_HI16: | |
14323 | case BFD_RELOC_MICROMIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
14324 | case BFD_RELOC_MIPS16_TLS_GD: |
14325 | case BFD_RELOC_MIPS16_TLS_LDM: | |
14326 | case BFD_RELOC_MIPS16_TLS_DTPREL_HI16: | |
14327 | case BFD_RELOC_MIPS16_TLS_DTPREL_LO16: | |
14328 | case BFD_RELOC_MIPS16_TLS_GOTTPREL: | |
14329 | case BFD_RELOC_MIPS16_TLS_TPREL_HI16: | |
14330 | case BFD_RELOC_MIPS16_TLS_TPREL_LO16: | |
b886a2ab RS |
14331 | if (!fixP->fx_addsy) |
14332 | { | |
14333 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
14334 | _("TLS relocation against a constant")); | |
14335 | break; | |
14336 | } | |
3f98094e DJ |
14337 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
14338 | /* fall through */ | |
14339 | ||
252b5132 | 14340 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
14341 | case BFD_RELOC_MIPS_SHIFT5: |
14342 | case BFD_RELOC_MIPS_SHIFT6: | |
14343 | case BFD_RELOC_MIPS_GOT_DISP: | |
14344 | case BFD_RELOC_MIPS_GOT_PAGE: | |
14345 | case BFD_RELOC_MIPS_GOT_OFST: | |
14346 | case BFD_RELOC_MIPS_SUB: | |
14347 | case BFD_RELOC_MIPS_INSERT_A: | |
14348 | case BFD_RELOC_MIPS_INSERT_B: | |
14349 | case BFD_RELOC_MIPS_DELETE: | |
14350 | case BFD_RELOC_MIPS_HIGHEST: | |
14351 | case BFD_RELOC_MIPS_HIGHER: | |
14352 | case BFD_RELOC_MIPS_SCN_DISP: | |
14353 | case BFD_RELOC_MIPS_REL16: | |
14354 | case BFD_RELOC_MIPS_RELGOT: | |
14355 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
14356 | case BFD_RELOC_HI16: |
14357 | case BFD_RELOC_HI16_S: | |
b886a2ab | 14358 | case BFD_RELOC_LO16: |
cdf6fd85 | 14359 | case BFD_RELOC_GPREL16: |
252b5132 RH |
14360 | case BFD_RELOC_MIPS_LITERAL: |
14361 | case BFD_RELOC_MIPS_CALL16: | |
14362 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 14363 | case BFD_RELOC_GPREL32: |
252b5132 RH |
14364 | case BFD_RELOC_MIPS_GOT_HI16: |
14365 | case BFD_RELOC_MIPS_GOT_LO16: | |
14366 | case BFD_RELOC_MIPS_CALL_HI16: | |
14367 | case BFD_RELOC_MIPS_CALL_LO16: | |
14368 | case BFD_RELOC_MIPS16_GPREL: | |
738e5348 RS |
14369 | case BFD_RELOC_MIPS16_GOT16: |
14370 | case BFD_RELOC_MIPS16_CALL16: | |
d6f16593 MR |
14371 | case BFD_RELOC_MIPS16_HI16: |
14372 | case BFD_RELOC_MIPS16_HI16_S: | |
b886a2ab | 14373 | case BFD_RELOC_MIPS16_LO16: |
252b5132 | 14374 | case BFD_RELOC_MIPS16_JMP: |
df58fc94 RS |
14375 | case BFD_RELOC_MICROMIPS_JMP: |
14376 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
14377 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
14378 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
14379 | case BFD_RELOC_MICROMIPS_SUB: | |
14380 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
14381 | case BFD_RELOC_MICROMIPS_HIGHER: | |
14382 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
14383 | case BFD_RELOC_MICROMIPS_JALR: | |
14384 | case BFD_RELOC_MICROMIPS_HI16: | |
14385 | case BFD_RELOC_MICROMIPS_HI16_S: | |
b886a2ab | 14386 | case BFD_RELOC_MICROMIPS_LO16: |
df58fc94 RS |
14387 | case BFD_RELOC_MICROMIPS_GPREL16: |
14388 | case BFD_RELOC_MICROMIPS_LITERAL: | |
14389 | case BFD_RELOC_MICROMIPS_CALL16: | |
14390 | case BFD_RELOC_MICROMIPS_GOT16: | |
14391 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
14392 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
14393 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
14394 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
067ec077 | 14395 | case BFD_RELOC_MIPS_EH: |
b886a2ab RS |
14396 | if (fixP->fx_done) |
14397 | { | |
14398 | offsetT value; | |
14399 | ||
14400 | if (calculate_reloc (fixP->fx_r_type, *valP, &value)) | |
14401 | { | |
14402 | insn = read_reloc_insn (buf, fixP->fx_r_type); | |
14403 | if (mips16_reloc_p (fixP->fx_r_type)) | |
14404 | insn |= mips16_immed_extend (value, 16); | |
14405 | else | |
14406 | insn |= (value & 0xffff); | |
14407 | write_reloc_insn (buf, fixP->fx_r_type, insn); | |
14408 | } | |
14409 | else | |
14410 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1661c76c | 14411 | _("unsupported constant in relocation")); |
b886a2ab | 14412 | } |
252b5132 RH |
14413 | break; |
14414 | ||
252b5132 RH |
14415 | case BFD_RELOC_64: |
14416 | /* This is handled like BFD_RELOC_32, but we output a sign | |
14417 | extended value if we are only 32 bits. */ | |
3e722fb5 | 14418 | if (fixP->fx_done) |
252b5132 RH |
14419 | { |
14420 | if (8 <= sizeof (valueT)) | |
4d68580a | 14421 | md_number_to_chars (buf, *valP, 8); |
252b5132 RH |
14422 | else |
14423 | { | |
a7ebbfdf | 14424 | valueT hiv; |
252b5132 | 14425 | |
a7ebbfdf | 14426 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
14427 | hiv = 0xffffffff; |
14428 | else | |
14429 | hiv = 0; | |
4d68580a RS |
14430 | md_number_to_chars (buf + (target_big_endian ? 4 : 0), *valP, 4); |
14431 | md_number_to_chars (buf + (target_big_endian ? 0 : 4), hiv, 4); | |
252b5132 RH |
14432 | } |
14433 | } | |
14434 | break; | |
14435 | ||
056350c6 | 14436 | case BFD_RELOC_RVA: |
252b5132 | 14437 | case BFD_RELOC_32: |
b47468a6 | 14438 | case BFD_RELOC_32_PCREL: |
252b5132 RH |
14439 | case BFD_RELOC_16: |
14440 | /* If we are deleting this reloc entry, we must fill in the | |
54f4ddb3 TS |
14441 | value now. This can happen if we have a .word which is not |
14442 | resolved when it appears but is later defined. */ | |
252b5132 | 14443 | if (fixP->fx_done) |
4d68580a | 14444 | md_number_to_chars (buf, *valP, fixP->fx_size); |
252b5132 RH |
14445 | break; |
14446 | ||
252b5132 | 14447 | case BFD_RELOC_16_PCREL_S2: |
a7ebbfdf | 14448 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 14449 | as_bad_where (fixP->fx_file, fixP->fx_line, |
1661c76c | 14450 | _("branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 14451 | |
54f4ddb3 TS |
14452 | /* We need to save the bits in the instruction since fixup_segment() |
14453 | might be deleting the relocation entry (i.e., a branch within | |
14454 | the current segment). */ | |
a7ebbfdf | 14455 | if (! fixP->fx_done) |
bb2d6cd7 | 14456 | break; |
252b5132 | 14457 | |
54f4ddb3 | 14458 | /* Update old instruction data. */ |
4d68580a | 14459 | insn = read_insn (buf); |
252b5132 | 14460 | |
a7ebbfdf TS |
14461 | if (*valP + 0x20000 <= 0x3ffff) |
14462 | { | |
14463 | insn |= (*valP >> 2) & 0xffff; | |
4d68580a | 14464 | write_insn (buf, insn); |
a7ebbfdf TS |
14465 | } |
14466 | else if (mips_pic == NO_PIC | |
14467 | && fixP->fx_done | |
14468 | && fixP->fx_frag->fr_address >= text_section->vma | |
14469 | && (fixP->fx_frag->fr_address | |
587aac4e | 14470 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
14471 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
14472 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
14473 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
14474 | { |
14475 | /* The branch offset is too large. If this is an | |
14476 | unconditional branch, and we are not generating PIC code, | |
14477 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
14478 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
14479 | insn = 0x0c000000; /* jal */ | |
252b5132 | 14480 | else |
a7ebbfdf TS |
14481 | insn = 0x08000000; /* j */ |
14482 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
14483 | fixP->fx_done = 0; | |
14484 | fixP->fx_addsy = section_symbol (text_section); | |
14485 | *valP += md_pcrel_from (fixP); | |
4d68580a | 14486 | write_insn (buf, insn); |
a7ebbfdf TS |
14487 | } |
14488 | else | |
14489 | { | |
14490 | /* If we got here, we have branch-relaxation disabled, | |
14491 | and there's nothing we can do to fix this instruction | |
14492 | without turning it into a longer sequence. */ | |
14493 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1661c76c | 14494 | _("branch out of range")); |
252b5132 | 14495 | } |
252b5132 RH |
14496 | break; |
14497 | ||
df58fc94 RS |
14498 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
14499 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
14500 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
14501 | /* We adjust the offset back to even. */ | |
14502 | if ((*valP & 0x1) != 0) | |
14503 | --(*valP); | |
14504 | ||
14505 | if (! fixP->fx_done) | |
14506 | break; | |
14507 | ||
14508 | /* Should never visit here, because we keep the relocation. */ | |
14509 | abort (); | |
14510 | break; | |
14511 | ||
252b5132 RH |
14512 | case BFD_RELOC_VTABLE_INHERIT: |
14513 | fixP->fx_done = 0; | |
14514 | if (fixP->fx_addsy | |
14515 | && !S_IS_DEFINED (fixP->fx_addsy) | |
14516 | && !S_IS_WEAK (fixP->fx_addsy)) | |
14517 | S_SET_WEAK (fixP->fx_addsy); | |
14518 | break; | |
14519 | ||
14520 | case BFD_RELOC_VTABLE_ENTRY: | |
14521 | fixP->fx_done = 0; | |
14522 | break; | |
14523 | ||
14524 | default: | |
b37df7c4 | 14525 | abort (); |
252b5132 | 14526 | } |
a7ebbfdf TS |
14527 | |
14528 | /* Remember value for tc_gen_reloc. */ | |
14529 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
14530 | } |
14531 | ||
252b5132 | 14532 | static symbolS * |
17a2f251 | 14533 | get_symbol (void) |
252b5132 RH |
14534 | { |
14535 | int c; | |
14536 | char *name; | |
14537 | symbolS *p; | |
14538 | ||
14539 | name = input_line_pointer; | |
14540 | c = get_symbol_end (); | |
14541 | p = (symbolS *) symbol_find_or_make (name); | |
14542 | *input_line_pointer = c; | |
14543 | return p; | |
14544 | } | |
14545 | ||
742a56fe RS |
14546 | /* Align the current frag to a given power of two. If a particular |
14547 | fill byte should be used, FILL points to an integer that contains | |
14548 | that byte, otherwise FILL is null. | |
14549 | ||
462427c4 RS |
14550 | This function used to have the comment: |
14551 | ||
14552 | The MIPS assembler also automatically adjusts any preceding label. | |
14553 | ||
14554 | The implementation therefore applied the adjustment to a maximum of | |
14555 | one label. However, other label adjustments are applied to batches | |
14556 | of labels, and adjusting just one caused problems when new labels | |
14557 | were added for the sake of debugging or unwind information. | |
14558 | We therefore adjust all preceding labels (given as LABELS) instead. */ | |
252b5132 RH |
14559 | |
14560 | static void | |
462427c4 | 14561 | mips_align (int to, int *fill, struct insn_label_list *labels) |
252b5132 | 14562 | { |
7d10b47d | 14563 | mips_emit_delays (); |
df58fc94 | 14564 | mips_record_compressed_mode (); |
742a56fe RS |
14565 | if (fill == NULL && subseg_text_p (now_seg)) |
14566 | frag_align_code (to, 0); | |
14567 | else | |
14568 | frag_align (to, fill ? *fill : 0, 0); | |
252b5132 | 14569 | record_alignment (now_seg, to); |
462427c4 | 14570 | mips_move_labels (labels, FALSE); |
252b5132 RH |
14571 | } |
14572 | ||
14573 | /* Align to a given power of two. .align 0 turns off the automatic | |
14574 | alignment used by the data creating pseudo-ops. */ | |
14575 | ||
14576 | static void | |
17a2f251 | 14577 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 14578 | { |
742a56fe | 14579 | int temp, fill_value, *fill_ptr; |
49954fb4 | 14580 | long max_alignment = 28; |
252b5132 | 14581 | |
54f4ddb3 | 14582 | /* o Note that the assembler pulls down any immediately preceding label |
252b5132 | 14583 | to the aligned address. |
54f4ddb3 | 14584 | o It's not documented but auto alignment is reinstated by |
252b5132 | 14585 | a .align pseudo instruction. |
54f4ddb3 | 14586 | o Note also that after auto alignment is turned off the mips assembler |
252b5132 | 14587 | issues an error on attempt to assemble an improperly aligned data item. |
54f4ddb3 | 14588 | We don't. */ |
252b5132 RH |
14589 | |
14590 | temp = get_absolute_expression (); | |
14591 | if (temp > max_alignment) | |
1661c76c | 14592 | as_bad (_("alignment too large, %d assumed"), temp = max_alignment); |
252b5132 RH |
14593 | else if (temp < 0) |
14594 | { | |
1661c76c | 14595 | as_warn (_("alignment negative, 0 assumed")); |
252b5132 RH |
14596 | temp = 0; |
14597 | } | |
14598 | if (*input_line_pointer == ',') | |
14599 | { | |
f9419b05 | 14600 | ++input_line_pointer; |
742a56fe RS |
14601 | fill_value = get_absolute_expression (); |
14602 | fill_ptr = &fill_value; | |
252b5132 RH |
14603 | } |
14604 | else | |
742a56fe | 14605 | fill_ptr = 0; |
252b5132 RH |
14606 | if (temp) |
14607 | { | |
a8dbcb85 TS |
14608 | segment_info_type *si = seg_info (now_seg); |
14609 | struct insn_label_list *l = si->label_list; | |
54f4ddb3 | 14610 | /* Auto alignment should be switched on by next section change. */ |
252b5132 | 14611 | auto_align = 1; |
462427c4 | 14612 | mips_align (temp, fill_ptr, l); |
252b5132 RH |
14613 | } |
14614 | else | |
14615 | { | |
14616 | auto_align = 0; | |
14617 | } | |
14618 | ||
14619 | demand_empty_rest_of_line (); | |
14620 | } | |
14621 | ||
252b5132 | 14622 | static void |
17a2f251 | 14623 | s_change_sec (int sec) |
252b5132 RH |
14624 | { |
14625 | segT seg; | |
14626 | ||
252b5132 RH |
14627 | /* The ELF backend needs to know that we are changing sections, so |
14628 | that .previous works correctly. We could do something like check | |
b6ff326e | 14629 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
14630 | as it would not be appropriate to use it in the section changing |
14631 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
14632 | This should be cleaner, somehow. */ | |
f3ded42a | 14633 | obj_elf_section_change_hook (); |
252b5132 | 14634 | |
7d10b47d | 14635 | mips_emit_delays (); |
6a32d874 | 14636 | |
252b5132 RH |
14637 | switch (sec) |
14638 | { | |
14639 | case 't': | |
14640 | s_text (0); | |
14641 | break; | |
14642 | case 'd': | |
14643 | s_data (0); | |
14644 | break; | |
14645 | case 'b': | |
14646 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
14647 | demand_empty_rest_of_line (); | |
14648 | break; | |
14649 | ||
14650 | case 'r': | |
4d0d148d TS |
14651 | seg = subseg_new (RDATA_SECTION_NAME, |
14652 | (subsegT) get_absolute_expression ()); | |
f3ded42a RS |
14653 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
14654 | | SEC_READONLY | SEC_RELOC | |
14655 | | SEC_DATA)); | |
14656 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
14657 | record_alignment (seg, 4); | |
4d0d148d | 14658 | demand_empty_rest_of_line (); |
252b5132 RH |
14659 | break; |
14660 | ||
14661 | case 's': | |
4d0d148d | 14662 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
f3ded42a RS |
14663 | bfd_set_section_flags (stdoutput, seg, |
14664 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
14665 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
14666 | record_alignment (seg, 4); | |
4d0d148d TS |
14667 | demand_empty_rest_of_line (); |
14668 | break; | |
998b3c36 MR |
14669 | |
14670 | case 'B': | |
14671 | seg = subseg_new (".sbss", (subsegT) get_absolute_expression ()); | |
f3ded42a RS |
14672 | bfd_set_section_flags (stdoutput, seg, SEC_ALLOC); |
14673 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
14674 | record_alignment (seg, 4); | |
998b3c36 MR |
14675 | demand_empty_rest_of_line (); |
14676 | break; | |
252b5132 RH |
14677 | } |
14678 | ||
14679 | auto_align = 1; | |
14680 | } | |
b34976b6 | 14681 | |
cca86cc8 | 14682 | void |
17a2f251 | 14683 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 14684 | { |
cca86cc8 SC |
14685 | char *section_name; |
14686 | char c; | |
684022ea | 14687 | char next_c = 0; |
cca86cc8 SC |
14688 | int section_type; |
14689 | int section_flag; | |
14690 | int section_entry_size; | |
14691 | int section_alignment; | |
b34976b6 | 14692 | |
cca86cc8 SC |
14693 | section_name = input_line_pointer; |
14694 | c = get_symbol_end (); | |
a816d1ed AO |
14695 | if (c) |
14696 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 14697 | |
4cf0dd0d TS |
14698 | /* Do we have .section Name<,"flags">? */ |
14699 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 14700 | { |
4cf0dd0d TS |
14701 | /* just after name is now '\0'. */ |
14702 | *input_line_pointer = c; | |
cca86cc8 SC |
14703 | input_line_pointer = section_name; |
14704 | obj_elf_section (ignore); | |
14705 | return; | |
14706 | } | |
14707 | input_line_pointer++; | |
14708 | ||
14709 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
14710 | if (c == ',') | |
14711 | section_type = get_absolute_expression (); | |
14712 | else | |
14713 | section_type = 0; | |
14714 | if (*input_line_pointer++ == ',') | |
14715 | section_flag = get_absolute_expression (); | |
14716 | else | |
14717 | section_flag = 0; | |
14718 | if (*input_line_pointer++ == ',') | |
14719 | section_entry_size = get_absolute_expression (); | |
14720 | else | |
14721 | section_entry_size = 0; | |
14722 | if (*input_line_pointer++ == ',') | |
14723 | section_alignment = get_absolute_expression (); | |
14724 | else | |
14725 | section_alignment = 0; | |
87975d2a AM |
14726 | /* FIXME: really ignore? */ |
14727 | (void) section_alignment; | |
cca86cc8 | 14728 | |
a816d1ed AO |
14729 | section_name = xstrdup (section_name); |
14730 | ||
8ab8a5c8 RS |
14731 | /* When using the generic form of .section (as implemented by obj-elf.c), |
14732 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
14733 | traditionally had to fall back on the more common @progbits instead. | |
14734 | ||
14735 | There's nothing really harmful in this, since bfd will correct | |
14736 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 14737 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
14738 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
14739 | ||
14740 | Even so, we shouldn't force users of the MIPS .section syntax to | |
14741 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
14742 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
14743 | generic type-checking code. */ | |
14744 | if (section_type == SHT_MIPS_DWARF) | |
14745 | section_type = SHT_PROGBITS; | |
14746 | ||
cca86cc8 SC |
14747 | obj_elf_change_section (section_name, section_type, section_flag, |
14748 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
14749 | |
14750 | if (now_seg->name != section_name) | |
14751 | free (section_name); | |
cca86cc8 | 14752 | } |
252b5132 RH |
14753 | |
14754 | void | |
17a2f251 | 14755 | mips_enable_auto_align (void) |
252b5132 RH |
14756 | { |
14757 | auto_align = 1; | |
14758 | } | |
14759 | ||
14760 | static void | |
17a2f251 | 14761 | s_cons (int log_size) |
252b5132 | 14762 | { |
a8dbcb85 TS |
14763 | segment_info_type *si = seg_info (now_seg); |
14764 | struct insn_label_list *l = si->label_list; | |
252b5132 | 14765 | |
7d10b47d | 14766 | mips_emit_delays (); |
252b5132 | 14767 | if (log_size > 0 && auto_align) |
462427c4 | 14768 | mips_align (log_size, 0, l); |
252b5132 | 14769 | cons (1 << log_size); |
a1facbec | 14770 | mips_clear_insn_labels (); |
252b5132 RH |
14771 | } |
14772 | ||
14773 | static void | |
17a2f251 | 14774 | s_float_cons (int type) |
252b5132 | 14775 | { |
a8dbcb85 TS |
14776 | segment_info_type *si = seg_info (now_seg); |
14777 | struct insn_label_list *l = si->label_list; | |
252b5132 | 14778 | |
7d10b47d | 14779 | mips_emit_delays (); |
252b5132 RH |
14780 | |
14781 | if (auto_align) | |
49309057 ILT |
14782 | { |
14783 | if (type == 'd') | |
462427c4 | 14784 | mips_align (3, 0, l); |
49309057 | 14785 | else |
462427c4 | 14786 | mips_align (2, 0, l); |
49309057 | 14787 | } |
252b5132 | 14788 | |
252b5132 | 14789 | float_cons (type); |
a1facbec | 14790 | mips_clear_insn_labels (); |
252b5132 RH |
14791 | } |
14792 | ||
14793 | /* Handle .globl. We need to override it because on Irix 5 you are | |
14794 | permitted to say | |
14795 | .globl foo .text | |
14796 | where foo is an undefined symbol, to mean that foo should be | |
14797 | considered to be the address of a function. */ | |
14798 | ||
14799 | static void | |
17a2f251 | 14800 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
14801 | { |
14802 | char *name; | |
14803 | int c; | |
14804 | symbolS *symbolP; | |
14805 | flagword flag; | |
14806 | ||
8a06b769 | 14807 | do |
252b5132 | 14808 | { |
8a06b769 | 14809 | name = input_line_pointer; |
252b5132 | 14810 | c = get_symbol_end (); |
8a06b769 TS |
14811 | symbolP = symbol_find_or_make (name); |
14812 | S_SET_EXTERNAL (symbolP); | |
14813 | ||
252b5132 | 14814 | *input_line_pointer = c; |
8a06b769 | 14815 | SKIP_WHITESPACE (); |
252b5132 | 14816 | |
8a06b769 TS |
14817 | /* On Irix 5, every global symbol that is not explicitly labelled as |
14818 | being a function is apparently labelled as being an object. */ | |
14819 | flag = BSF_OBJECT; | |
252b5132 | 14820 | |
8a06b769 TS |
14821 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
14822 | && (*input_line_pointer != ',')) | |
14823 | { | |
14824 | char *secname; | |
14825 | asection *sec; | |
14826 | ||
14827 | secname = input_line_pointer; | |
14828 | c = get_symbol_end (); | |
14829 | sec = bfd_get_section_by_name (stdoutput, secname); | |
14830 | if (sec == NULL) | |
14831 | as_bad (_("%s: no such section"), secname); | |
14832 | *input_line_pointer = c; | |
14833 | ||
14834 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
14835 | flag = BSF_FUNCTION; | |
14836 | } | |
14837 | ||
14838 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
14839 | ||
14840 | c = *input_line_pointer; | |
14841 | if (c == ',') | |
14842 | { | |
14843 | input_line_pointer++; | |
14844 | SKIP_WHITESPACE (); | |
14845 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
14846 | c = '\n'; | |
14847 | } | |
14848 | } | |
14849 | while (c == ','); | |
252b5132 | 14850 | |
252b5132 RH |
14851 | demand_empty_rest_of_line (); |
14852 | } | |
14853 | ||
14854 | static void | |
17a2f251 | 14855 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
14856 | { |
14857 | char *opt; | |
14858 | char c; | |
14859 | ||
14860 | opt = input_line_pointer; | |
14861 | c = get_symbol_end (); | |
14862 | ||
14863 | if (*opt == 'O') | |
14864 | { | |
14865 | /* FIXME: What does this mean? */ | |
14866 | } | |
14867 | else if (strncmp (opt, "pic", 3) == 0) | |
14868 | { | |
14869 | int i; | |
14870 | ||
14871 | i = atoi (opt + 3); | |
14872 | if (i == 0) | |
14873 | mips_pic = NO_PIC; | |
14874 | else if (i == 2) | |
143d77c5 | 14875 | { |
8b828383 | 14876 | mips_pic = SVR4_PIC; |
143d77c5 EC |
14877 | mips_abicalls = TRUE; |
14878 | } | |
252b5132 RH |
14879 | else |
14880 | as_bad (_(".option pic%d not supported"), i); | |
14881 | ||
4d0d148d | 14882 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
14883 | { |
14884 | if (g_switch_seen && g_switch_value != 0) | |
14885 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
14886 | g_switch_value = 0; | |
14887 | bfd_set_gp_size (stdoutput, 0); | |
14888 | } | |
14889 | } | |
14890 | else | |
1661c76c | 14891 | as_warn (_("unrecognized option \"%s\""), opt); |
252b5132 RH |
14892 | |
14893 | *input_line_pointer = c; | |
14894 | demand_empty_rest_of_line (); | |
14895 | } | |
14896 | ||
14897 | /* This structure is used to hold a stack of .set values. */ | |
14898 | ||
e972090a NC |
14899 | struct mips_option_stack |
14900 | { | |
252b5132 RH |
14901 | struct mips_option_stack *next; |
14902 | struct mips_set_options options; | |
14903 | }; | |
14904 | ||
14905 | static struct mips_option_stack *mips_opts_stack; | |
14906 | ||
14907 | /* Handle the .set pseudo-op. */ | |
14908 | ||
14909 | static void | |
17a2f251 | 14910 | s_mipsset (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
14911 | { |
14912 | char *name = input_line_pointer, ch; | |
c6278170 | 14913 | const struct mips_ase *ase; |
252b5132 RH |
14914 | |
14915 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 14916 | ++input_line_pointer; |
252b5132 RH |
14917 | ch = *input_line_pointer; |
14918 | *input_line_pointer = '\0'; | |
14919 | ||
14920 | if (strcmp (name, "reorder") == 0) | |
14921 | { | |
7d10b47d RS |
14922 | if (mips_opts.noreorder) |
14923 | end_noreorder (); | |
252b5132 RH |
14924 | } |
14925 | else if (strcmp (name, "noreorder") == 0) | |
14926 | { | |
7d10b47d RS |
14927 | if (!mips_opts.noreorder) |
14928 | start_noreorder (); | |
252b5132 | 14929 | } |
741fe287 MR |
14930 | else if (strncmp (name, "at=", 3) == 0) |
14931 | { | |
14932 | char *s = name + 3; | |
14933 | ||
14934 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, &mips_opts.at)) | |
1661c76c | 14935 | as_bad (_("unrecognized register name `%s'"), s); |
741fe287 | 14936 | } |
252b5132 RH |
14937 | else if (strcmp (name, "at") == 0) |
14938 | { | |
741fe287 | 14939 | mips_opts.at = ATREG; |
252b5132 RH |
14940 | } |
14941 | else if (strcmp (name, "noat") == 0) | |
14942 | { | |
741fe287 | 14943 | mips_opts.at = ZERO; |
252b5132 RH |
14944 | } |
14945 | else if (strcmp (name, "macro") == 0) | |
14946 | { | |
14947 | mips_opts.warn_about_macros = 0; | |
14948 | } | |
14949 | else if (strcmp (name, "nomacro") == 0) | |
14950 | { | |
14951 | if (mips_opts.noreorder == 0) | |
14952 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
14953 | mips_opts.warn_about_macros = 1; | |
14954 | } | |
14955 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
14956 | { | |
14957 | mips_opts.nomove = 0; | |
14958 | } | |
14959 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
14960 | { | |
14961 | mips_opts.nomove = 1; | |
14962 | } | |
14963 | else if (strcmp (name, "bopt") == 0) | |
14964 | { | |
14965 | mips_opts.nobopt = 0; | |
14966 | } | |
14967 | else if (strcmp (name, "nobopt") == 0) | |
14968 | { | |
14969 | mips_opts.nobopt = 1; | |
14970 | } | |
ad3fea08 TS |
14971 | else if (strcmp (name, "gp=default") == 0) |
14972 | mips_opts.gp32 = file_mips_gp32; | |
14973 | else if (strcmp (name, "gp=32") == 0) | |
14974 | mips_opts.gp32 = 1; | |
14975 | else if (strcmp (name, "gp=64") == 0) | |
14976 | { | |
14977 | if (!ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
20203fb9 | 14978 | as_warn (_("%s isa does not support 64-bit registers"), |
ad3fea08 TS |
14979 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
14980 | mips_opts.gp32 = 0; | |
14981 | } | |
14982 | else if (strcmp (name, "fp=default") == 0) | |
14983 | mips_opts.fp32 = file_mips_fp32; | |
14984 | else if (strcmp (name, "fp=32") == 0) | |
14985 | mips_opts.fp32 = 1; | |
14986 | else if (strcmp (name, "fp=64") == 0) | |
14987 | { | |
14988 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
20203fb9 | 14989 | as_warn (_("%s isa does not support 64-bit floating point registers"), |
ad3fea08 TS |
14990 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
14991 | mips_opts.fp32 = 0; | |
14992 | } | |
037b32b9 AN |
14993 | else if (strcmp (name, "softfloat") == 0) |
14994 | mips_opts.soft_float = 1; | |
14995 | else if (strcmp (name, "hardfloat") == 0) | |
14996 | mips_opts.soft_float = 0; | |
14997 | else if (strcmp (name, "singlefloat") == 0) | |
14998 | mips_opts.single_float = 1; | |
14999 | else if (strcmp (name, "doublefloat") == 0) | |
15000 | mips_opts.single_float = 0; | |
252b5132 RH |
15001 | else if (strcmp (name, "mips16") == 0 |
15002 | || strcmp (name, "MIPS-16") == 0) | |
df58fc94 RS |
15003 | { |
15004 | if (mips_opts.micromips == 1) | |
15005 | as_fatal (_("`mips16' cannot be used with `micromips'")); | |
15006 | mips_opts.mips16 = 1; | |
15007 | } | |
252b5132 RH |
15008 | else if (strcmp (name, "nomips16") == 0 |
15009 | || strcmp (name, "noMIPS-16") == 0) | |
15010 | mips_opts.mips16 = 0; | |
df58fc94 RS |
15011 | else if (strcmp (name, "micromips") == 0) |
15012 | { | |
15013 | if (mips_opts.mips16 == 1) | |
15014 | as_fatal (_("`micromips' cannot be used with `mips16'")); | |
15015 | mips_opts.micromips = 1; | |
15016 | } | |
15017 | else if (strcmp (name, "nomicromips") == 0) | |
15018 | mips_opts.micromips = 0; | |
c6278170 RS |
15019 | else if (name[0] == 'n' |
15020 | && name[1] == 'o' | |
15021 | && (ase = mips_lookup_ase (name + 2))) | |
15022 | mips_set_ase (ase, FALSE); | |
15023 | else if ((ase = mips_lookup_ase (name))) | |
15024 | mips_set_ase (ase, TRUE); | |
1a2c1fad | 15025 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 15026 | { |
af7ee8bf | 15027 | int reset = 0; |
252b5132 | 15028 | |
1a2c1fad CD |
15029 | /* Permit the user to change the ISA and architecture on the fly. |
15030 | Needless to say, misuse can cause serious problems. */ | |
81a21e38 | 15031 | if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) |
af7ee8bf CD |
15032 | { |
15033 | reset = 1; | |
15034 | mips_opts.isa = file_mips_isa; | |
1a2c1fad | 15035 | mips_opts.arch = file_mips_arch; |
1a2c1fad CD |
15036 | } |
15037 | else if (strncmp (name, "arch=", 5) == 0) | |
15038 | { | |
15039 | const struct mips_cpu_info *p; | |
15040 | ||
15041 | p = mips_parse_cpu("internal use", name + 5); | |
15042 | if (!p) | |
15043 | as_bad (_("unknown architecture %s"), name + 5); | |
15044 | else | |
15045 | { | |
15046 | mips_opts.arch = p->cpu; | |
15047 | mips_opts.isa = p->isa; | |
15048 | } | |
15049 | } | |
81a21e38 TS |
15050 | else if (strncmp (name, "mips", 4) == 0) |
15051 | { | |
15052 | const struct mips_cpu_info *p; | |
15053 | ||
15054 | p = mips_parse_cpu("internal use", name); | |
15055 | if (!p) | |
15056 | as_bad (_("unknown ISA level %s"), name + 4); | |
15057 | else | |
15058 | { | |
15059 | mips_opts.arch = p->cpu; | |
15060 | mips_opts.isa = p->isa; | |
15061 | } | |
15062 | } | |
af7ee8bf | 15063 | else |
81a21e38 | 15064 | as_bad (_("unknown ISA or architecture %s"), name); |
af7ee8bf CD |
15065 | |
15066 | switch (mips_opts.isa) | |
98d3f06f KH |
15067 | { |
15068 | case 0: | |
98d3f06f | 15069 | break; |
af7ee8bf CD |
15070 | case ISA_MIPS1: |
15071 | case ISA_MIPS2: | |
15072 | case ISA_MIPS32: | |
15073 | case ISA_MIPS32R2: | |
98d3f06f KH |
15074 | mips_opts.gp32 = 1; |
15075 | mips_opts.fp32 = 1; | |
15076 | break; | |
af7ee8bf CD |
15077 | case ISA_MIPS3: |
15078 | case ISA_MIPS4: | |
15079 | case ISA_MIPS5: | |
15080 | case ISA_MIPS64: | |
5f74bc13 | 15081 | case ISA_MIPS64R2: |
98d3f06f | 15082 | mips_opts.gp32 = 0; |
e407c74b NC |
15083 | if (mips_opts.arch == CPU_R5900) |
15084 | { | |
15085 | mips_opts.fp32 = 1; | |
15086 | } | |
15087 | else | |
15088 | { | |
98d3f06f | 15089 | mips_opts.fp32 = 0; |
e407c74b | 15090 | } |
98d3f06f KH |
15091 | break; |
15092 | default: | |
15093 | as_bad (_("unknown ISA level %s"), name + 4); | |
15094 | break; | |
15095 | } | |
af7ee8bf | 15096 | if (reset) |
98d3f06f | 15097 | { |
af7ee8bf CD |
15098 | mips_opts.gp32 = file_mips_gp32; |
15099 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 15100 | } |
252b5132 RH |
15101 | } |
15102 | else if (strcmp (name, "autoextend") == 0) | |
15103 | mips_opts.noautoextend = 0; | |
15104 | else if (strcmp (name, "noautoextend") == 0) | |
15105 | mips_opts.noautoextend = 1; | |
833794fc MR |
15106 | else if (strcmp (name, "insn32") == 0) |
15107 | mips_opts.insn32 = TRUE; | |
15108 | else if (strcmp (name, "noinsn32") == 0) | |
15109 | mips_opts.insn32 = FALSE; | |
252b5132 RH |
15110 | else if (strcmp (name, "push") == 0) |
15111 | { | |
15112 | struct mips_option_stack *s; | |
15113 | ||
15114 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
15115 | s->next = mips_opts_stack; | |
15116 | s->options = mips_opts; | |
15117 | mips_opts_stack = s; | |
15118 | } | |
15119 | else if (strcmp (name, "pop") == 0) | |
15120 | { | |
15121 | struct mips_option_stack *s; | |
15122 | ||
15123 | s = mips_opts_stack; | |
15124 | if (s == NULL) | |
15125 | as_bad (_(".set pop with no .set push")); | |
15126 | else | |
15127 | { | |
15128 | /* If we're changing the reorder mode we need to handle | |
15129 | delay slots correctly. */ | |
15130 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 15131 | start_noreorder (); |
252b5132 | 15132 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 15133 | end_noreorder (); |
252b5132 RH |
15134 | |
15135 | mips_opts = s->options; | |
15136 | mips_opts_stack = s->next; | |
15137 | free (s); | |
15138 | } | |
15139 | } | |
aed1a261 RS |
15140 | else if (strcmp (name, "sym32") == 0) |
15141 | mips_opts.sym32 = TRUE; | |
15142 | else if (strcmp (name, "nosym32") == 0) | |
15143 | mips_opts.sym32 = FALSE; | |
e6559e01 JM |
15144 | else if (strchr (name, ',')) |
15145 | { | |
15146 | /* Generic ".set" directive; use the generic handler. */ | |
15147 | *input_line_pointer = ch; | |
15148 | input_line_pointer = name; | |
15149 | s_set (0); | |
15150 | return; | |
15151 | } | |
252b5132 RH |
15152 | else |
15153 | { | |
1661c76c | 15154 | as_warn (_("tried to set unrecognized symbol: %s\n"), name); |
252b5132 | 15155 | } |
c6278170 | 15156 | mips_check_isa_supports_ases (); |
252b5132 RH |
15157 | *input_line_pointer = ch; |
15158 | demand_empty_rest_of_line (); | |
15159 | } | |
15160 | ||
15161 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
15162 | .option pic2. It means to generate SVR4 PIC calls. */ | |
15163 | ||
15164 | static void | |
17a2f251 | 15165 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
15166 | { |
15167 | mips_pic = SVR4_PIC; | |
143d77c5 | 15168 | mips_abicalls = TRUE; |
4d0d148d TS |
15169 | |
15170 | if (g_switch_seen && g_switch_value != 0) | |
15171 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
15172 | g_switch_value = 0; | |
15173 | ||
252b5132 RH |
15174 | bfd_set_gp_size (stdoutput, 0); |
15175 | demand_empty_rest_of_line (); | |
15176 | } | |
15177 | ||
15178 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
15179 | PIC code. It sets the $gp register for the function based on the | |
15180 | function address, which is in the register named in the argument. | |
15181 | This uses a relocation against _gp_disp, which is handled specially | |
15182 | by the linker. The result is: | |
15183 | lui $gp,%hi(_gp_disp) | |
15184 | addiu $gp,$gp,%lo(_gp_disp) | |
15185 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
15186 | The .cpload argument is normally $25 == $t9. |
15187 | ||
15188 | The -mno-shared option changes this to: | |
bbe506e8 TS |
15189 | lui $gp,%hi(__gnu_local_gp) |
15190 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
15191 | and the argument is ignored. This saves an instruction, but the |
15192 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
15193 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
15194 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
15195 | |
15196 | static void | |
17a2f251 | 15197 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
15198 | { |
15199 | expressionS ex; | |
aa6975fb ILT |
15200 | int reg; |
15201 | int in_shared; | |
252b5132 | 15202 | |
6478892d TS |
15203 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
15204 | .cpload is ignored. */ | |
15205 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
15206 | { |
15207 | s_ignore (0); | |
15208 | return; | |
15209 | } | |
15210 | ||
a276b80c MR |
15211 | if (mips_opts.mips16) |
15212 | { | |
15213 | as_bad (_("%s not supported in MIPS16 mode"), ".cpload"); | |
15214 | ignore_rest_of_line (); | |
15215 | return; | |
15216 | } | |
15217 | ||
d3ecfc59 | 15218 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
15219 | if (mips_opts.noreorder == 0) |
15220 | as_warn (_(".cpload not in noreorder section")); | |
15221 | ||
aa6975fb ILT |
15222 | reg = tc_get_register (0); |
15223 | ||
15224 | /* If we need to produce a 64-bit address, we are better off using | |
15225 | the default instruction sequence. */ | |
aed1a261 | 15226 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 15227 | |
252b5132 | 15228 | ex.X_op = O_symbol; |
bbe506e8 TS |
15229 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
15230 | "__gnu_local_gp"); | |
252b5132 RH |
15231 | ex.X_op_symbol = NULL; |
15232 | ex.X_add_number = 0; | |
15233 | ||
15234 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 15235 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 15236 | |
8a75745d MR |
15237 | mips_mark_labels (); |
15238 | mips_assembling_insn = TRUE; | |
15239 | ||
584892a6 | 15240 | macro_start (); |
67c0d1eb RS |
15241 | macro_build_lui (&ex, mips_gp_register); |
15242 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 15243 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
15244 | if (in_shared) |
15245 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
15246 | mips_gp_register, reg); | |
584892a6 | 15247 | macro_end (); |
252b5132 | 15248 | |
8a75745d | 15249 | mips_assembling_insn = FALSE; |
252b5132 RH |
15250 | demand_empty_rest_of_line (); |
15251 | } | |
15252 | ||
6478892d TS |
15253 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
15254 | .cpsetup $reg1, offset|$reg2, label | |
15255 | ||
15256 | If offset is given, this results in: | |
15257 | sd $gp, offset($sp) | |
956cd1d6 | 15258 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
15259 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
15260 | daddu $gp, $gp, $reg1 | |
6478892d TS |
15261 | |
15262 | If $reg2 is given, this results in: | |
15263 | daddu $reg2, $gp, $0 | |
956cd1d6 | 15264 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
15265 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
15266 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
15267 | $reg1 is normally $25 == $t9. |
15268 | ||
15269 | The -mno-shared option replaces the last three instructions with | |
15270 | lui $gp,%hi(_gp) | |
54f4ddb3 | 15271 | addiu $gp,$gp,%lo(_gp) */ |
aa6975fb | 15272 | |
6478892d | 15273 | static void |
17a2f251 | 15274 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
15275 | { |
15276 | expressionS ex_off; | |
15277 | expressionS ex_sym; | |
15278 | int reg1; | |
6478892d | 15279 | |
8586fc66 | 15280 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
15281 | We also need NewABI support. */ |
15282 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
15283 | { | |
15284 | s_ignore (0); | |
15285 | return; | |
15286 | } | |
15287 | ||
a276b80c MR |
15288 | if (mips_opts.mips16) |
15289 | { | |
15290 | as_bad (_("%s not supported in MIPS16 mode"), ".cpsetup"); | |
15291 | ignore_rest_of_line (); | |
15292 | return; | |
15293 | } | |
15294 | ||
6478892d TS |
15295 | reg1 = tc_get_register (0); |
15296 | SKIP_WHITESPACE (); | |
15297 | if (*input_line_pointer != ',') | |
15298 | { | |
15299 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
15300 | return; | |
15301 | } | |
15302 | else | |
80245285 | 15303 | ++input_line_pointer; |
6478892d TS |
15304 | SKIP_WHITESPACE (); |
15305 | if (*input_line_pointer == '$') | |
80245285 TS |
15306 | { |
15307 | mips_cpreturn_register = tc_get_register (0); | |
15308 | mips_cpreturn_offset = -1; | |
15309 | } | |
6478892d | 15310 | else |
80245285 TS |
15311 | { |
15312 | mips_cpreturn_offset = get_absolute_expression (); | |
15313 | mips_cpreturn_register = -1; | |
15314 | } | |
6478892d TS |
15315 | SKIP_WHITESPACE (); |
15316 | if (*input_line_pointer != ',') | |
15317 | { | |
15318 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
15319 | return; | |
15320 | } | |
15321 | else | |
f9419b05 | 15322 | ++input_line_pointer; |
6478892d | 15323 | SKIP_WHITESPACE (); |
f21f8242 | 15324 | expression (&ex_sym); |
6478892d | 15325 | |
8a75745d MR |
15326 | mips_mark_labels (); |
15327 | mips_assembling_insn = TRUE; | |
15328 | ||
584892a6 | 15329 | macro_start (); |
6478892d TS |
15330 | if (mips_cpreturn_register == -1) |
15331 | { | |
15332 | ex_off.X_op = O_constant; | |
15333 | ex_off.X_add_symbol = NULL; | |
15334 | ex_off.X_op_symbol = NULL; | |
15335 | ex_off.X_add_number = mips_cpreturn_offset; | |
15336 | ||
67c0d1eb | 15337 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 15338 | BFD_RELOC_LO16, SP); |
6478892d TS |
15339 | } |
15340 | else | |
67c0d1eb | 15341 | macro_build (NULL, "daddu", "d,v,t", mips_cpreturn_register, |
17a2f251 | 15342 | mips_gp_register, 0); |
6478892d | 15343 | |
aed1a261 | 15344 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb | 15345 | { |
df58fc94 | 15346 | macro_build (&ex_sym, "lui", LUI_FMT, mips_gp_register, |
aa6975fb ILT |
15347 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, |
15348 | BFD_RELOC_HI16_S); | |
15349 | ||
15350 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
15351 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
15352 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
15353 | ||
15354 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
15355 | mips_gp_register, reg1); | |
15356 | } | |
15357 | else | |
15358 | { | |
15359 | expressionS ex; | |
15360 | ||
15361 | ex.X_op = O_symbol; | |
4184909a | 15362 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
15363 | ex.X_op_symbol = NULL; |
15364 | ex.X_add_number = 0; | |
6e1304d8 | 15365 | |
aa6975fb ILT |
15366 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
15367 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
15368 | ||
15369 | macro_build_lui (&ex, mips_gp_register); | |
15370 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
15371 | mips_gp_register, BFD_RELOC_LO16); | |
15372 | } | |
f21f8242 | 15373 | |
584892a6 | 15374 | macro_end (); |
6478892d | 15375 | |
8a75745d | 15376 | mips_assembling_insn = FALSE; |
6478892d TS |
15377 | demand_empty_rest_of_line (); |
15378 | } | |
15379 | ||
15380 | static void | |
17a2f251 | 15381 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
15382 | { |
15383 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
54f4ddb3 | 15384 | .cplocal is ignored. */ |
6478892d TS |
15385 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) |
15386 | { | |
15387 | s_ignore (0); | |
15388 | return; | |
15389 | } | |
15390 | ||
a276b80c MR |
15391 | if (mips_opts.mips16) |
15392 | { | |
15393 | as_bad (_("%s not supported in MIPS16 mode"), ".cplocal"); | |
15394 | ignore_rest_of_line (); | |
15395 | return; | |
15396 | } | |
15397 | ||
6478892d | 15398 | mips_gp_register = tc_get_register (0); |
85b51719 | 15399 | demand_empty_rest_of_line (); |
6478892d TS |
15400 | } |
15401 | ||
252b5132 RH |
15402 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
15403 | offset from $sp. The offset is remembered, and after making a PIC | |
15404 | call $gp is restored from that location. */ | |
15405 | ||
15406 | static void | |
17a2f251 | 15407 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
15408 | { |
15409 | expressionS ex; | |
252b5132 | 15410 | |
6478892d | 15411 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 15412 | .cprestore is ignored. */ |
6478892d | 15413 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
15414 | { |
15415 | s_ignore (0); | |
15416 | return; | |
15417 | } | |
15418 | ||
a276b80c MR |
15419 | if (mips_opts.mips16) |
15420 | { | |
15421 | as_bad (_("%s not supported in MIPS16 mode"), ".cprestore"); | |
15422 | ignore_rest_of_line (); | |
15423 | return; | |
15424 | } | |
15425 | ||
252b5132 | 15426 | mips_cprestore_offset = get_absolute_expression (); |
7a621144 | 15427 | mips_cprestore_valid = 1; |
252b5132 RH |
15428 | |
15429 | ex.X_op = O_constant; | |
15430 | ex.X_add_symbol = NULL; | |
15431 | ex.X_op_symbol = NULL; | |
15432 | ex.X_add_number = mips_cprestore_offset; | |
15433 | ||
8a75745d MR |
15434 | mips_mark_labels (); |
15435 | mips_assembling_insn = TRUE; | |
15436 | ||
584892a6 | 15437 | macro_start (); |
67c0d1eb RS |
15438 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
15439 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 15440 | macro_end (); |
252b5132 | 15441 | |
8a75745d | 15442 | mips_assembling_insn = FALSE; |
252b5132 RH |
15443 | demand_empty_rest_of_line (); |
15444 | } | |
15445 | ||
6478892d | 15446 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 15447 | was given in the preceding .cpsetup, it results in: |
6478892d | 15448 | ld $gp, offset($sp) |
76b3015f | 15449 | |
6478892d | 15450 | If a register $reg2 was given there, it results in: |
54f4ddb3 TS |
15451 | daddu $gp, $reg2, $0 */ |
15452 | ||
6478892d | 15453 | static void |
17a2f251 | 15454 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
15455 | { |
15456 | expressionS ex; | |
6478892d TS |
15457 | |
15458 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
15459 | We also need NewABI support. */ | |
15460 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
15461 | { | |
15462 | s_ignore (0); | |
15463 | return; | |
15464 | } | |
15465 | ||
a276b80c MR |
15466 | if (mips_opts.mips16) |
15467 | { | |
15468 | as_bad (_("%s not supported in MIPS16 mode"), ".cpreturn"); | |
15469 | ignore_rest_of_line (); | |
15470 | return; | |
15471 | } | |
15472 | ||
8a75745d MR |
15473 | mips_mark_labels (); |
15474 | mips_assembling_insn = TRUE; | |
15475 | ||
584892a6 | 15476 | macro_start (); |
6478892d TS |
15477 | if (mips_cpreturn_register == -1) |
15478 | { | |
15479 | ex.X_op = O_constant; | |
15480 | ex.X_add_symbol = NULL; | |
15481 | ex.X_op_symbol = NULL; | |
15482 | ex.X_add_number = mips_cpreturn_offset; | |
15483 | ||
67c0d1eb | 15484 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
15485 | } |
15486 | else | |
67c0d1eb | 15487 | macro_build (NULL, "daddu", "d,v,t", mips_gp_register, |
17a2f251 | 15488 | mips_cpreturn_register, 0); |
584892a6 | 15489 | macro_end (); |
6478892d | 15490 | |
8a75745d | 15491 | mips_assembling_insn = FALSE; |
6478892d TS |
15492 | demand_empty_rest_of_line (); |
15493 | } | |
15494 | ||
d0f13682 CLT |
15495 | /* Handle a .dtprelword, .dtpreldword, .tprelword, or .tpreldword |
15496 | pseudo-op; DIRSTR says which. The pseudo-op generates a BYTES-size | |
15497 | DTP- or TP-relative relocation of type RTYPE, for use in either DWARF | |
15498 | debug information or MIPS16 TLS. */ | |
741d6ea8 JM |
15499 | |
15500 | static void | |
d0f13682 CLT |
15501 | s_tls_rel_directive (const size_t bytes, const char *dirstr, |
15502 | bfd_reloc_code_real_type rtype) | |
741d6ea8 JM |
15503 | { |
15504 | expressionS ex; | |
15505 | char *p; | |
15506 | ||
15507 | expression (&ex); | |
15508 | ||
15509 | if (ex.X_op != O_symbol) | |
15510 | { | |
1661c76c | 15511 | as_bad (_("unsupported use of %s"), dirstr); |
741d6ea8 JM |
15512 | ignore_rest_of_line (); |
15513 | } | |
15514 | ||
15515 | p = frag_more (bytes); | |
15516 | md_number_to_chars (p, 0, bytes); | |
d0f13682 | 15517 | fix_new_exp (frag_now, p - frag_now->fr_literal, bytes, &ex, FALSE, rtype); |
741d6ea8 | 15518 | demand_empty_rest_of_line (); |
de64cffd | 15519 | mips_clear_insn_labels (); |
741d6ea8 JM |
15520 | } |
15521 | ||
15522 | /* Handle .dtprelword. */ | |
15523 | ||
15524 | static void | |
15525 | s_dtprelword (int ignore ATTRIBUTE_UNUSED) | |
15526 | { | |
d0f13682 | 15527 | s_tls_rel_directive (4, ".dtprelword", BFD_RELOC_MIPS_TLS_DTPREL32); |
741d6ea8 JM |
15528 | } |
15529 | ||
15530 | /* Handle .dtpreldword. */ | |
15531 | ||
15532 | static void | |
15533 | s_dtpreldword (int ignore ATTRIBUTE_UNUSED) | |
15534 | { | |
d0f13682 CLT |
15535 | s_tls_rel_directive (8, ".dtpreldword", BFD_RELOC_MIPS_TLS_DTPREL64); |
15536 | } | |
15537 | ||
15538 | /* Handle .tprelword. */ | |
15539 | ||
15540 | static void | |
15541 | s_tprelword (int ignore ATTRIBUTE_UNUSED) | |
15542 | { | |
15543 | s_tls_rel_directive (4, ".tprelword", BFD_RELOC_MIPS_TLS_TPREL32); | |
15544 | } | |
15545 | ||
15546 | /* Handle .tpreldword. */ | |
15547 | ||
15548 | static void | |
15549 | s_tpreldword (int ignore ATTRIBUTE_UNUSED) | |
15550 | { | |
15551 | s_tls_rel_directive (8, ".tpreldword", BFD_RELOC_MIPS_TLS_TPREL64); | |
741d6ea8 JM |
15552 | } |
15553 | ||
6478892d TS |
15554 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC |
15555 | code. It sets the offset to use in gp_rel relocations. */ | |
15556 | ||
15557 | static void | |
17a2f251 | 15558 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
15559 | { |
15560 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
15561 | We also need NewABI support. */ | |
15562 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
15563 | { | |
15564 | s_ignore (0); | |
15565 | return; | |
15566 | } | |
15567 | ||
def2e0dd | 15568 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
15569 | |
15570 | demand_empty_rest_of_line (); | |
15571 | } | |
15572 | ||
252b5132 RH |
15573 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
15574 | code. It generates a 32 bit GP relative reloc. */ | |
15575 | ||
15576 | static void | |
17a2f251 | 15577 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 15578 | { |
a8dbcb85 TS |
15579 | segment_info_type *si; |
15580 | struct insn_label_list *l; | |
252b5132 RH |
15581 | expressionS ex; |
15582 | char *p; | |
15583 | ||
15584 | /* When not generating PIC code, this is treated as .word. */ | |
15585 | if (mips_pic != SVR4_PIC) | |
15586 | { | |
15587 | s_cons (2); | |
15588 | return; | |
15589 | } | |
15590 | ||
a8dbcb85 TS |
15591 | si = seg_info (now_seg); |
15592 | l = si->label_list; | |
7d10b47d | 15593 | mips_emit_delays (); |
252b5132 | 15594 | if (auto_align) |
462427c4 | 15595 | mips_align (2, 0, l); |
252b5132 RH |
15596 | |
15597 | expression (&ex); | |
a1facbec | 15598 | mips_clear_insn_labels (); |
252b5132 RH |
15599 | |
15600 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
15601 | { | |
1661c76c | 15602 | as_bad (_("unsupported use of .gpword")); |
252b5132 RH |
15603 | ignore_rest_of_line (); |
15604 | } | |
15605 | ||
15606 | p = frag_more (4); | |
17a2f251 | 15607 | md_number_to_chars (p, 0, 4); |
b34976b6 | 15608 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 15609 | BFD_RELOC_GPREL32); |
252b5132 RH |
15610 | |
15611 | demand_empty_rest_of_line (); | |
15612 | } | |
15613 | ||
10181a0d | 15614 | static void |
17a2f251 | 15615 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d | 15616 | { |
a8dbcb85 TS |
15617 | segment_info_type *si; |
15618 | struct insn_label_list *l; | |
10181a0d AO |
15619 | expressionS ex; |
15620 | char *p; | |
15621 | ||
15622 | /* When not generating PIC code, this is treated as .dword. */ | |
15623 | if (mips_pic != SVR4_PIC) | |
15624 | { | |
15625 | s_cons (3); | |
15626 | return; | |
15627 | } | |
15628 | ||
a8dbcb85 TS |
15629 | si = seg_info (now_seg); |
15630 | l = si->label_list; | |
7d10b47d | 15631 | mips_emit_delays (); |
10181a0d | 15632 | if (auto_align) |
462427c4 | 15633 | mips_align (3, 0, l); |
10181a0d AO |
15634 | |
15635 | expression (&ex); | |
a1facbec | 15636 | mips_clear_insn_labels (); |
10181a0d AO |
15637 | |
15638 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
15639 | { | |
1661c76c | 15640 | as_bad (_("unsupported use of .gpdword")); |
10181a0d AO |
15641 | ignore_rest_of_line (); |
15642 | } | |
15643 | ||
15644 | p = frag_more (8); | |
17a2f251 | 15645 | md_number_to_chars (p, 0, 8); |
a105a300 | 15646 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 15647 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
15648 | |
15649 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
15650 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
15651 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
15652 | |
15653 | demand_empty_rest_of_line (); | |
15654 | } | |
15655 | ||
a3f278e2 CM |
15656 | /* Handle the .ehword pseudo-op. This is used when generating unwinding |
15657 | tables. It generates a R_MIPS_EH reloc. */ | |
15658 | ||
15659 | static void | |
15660 | s_ehword (int ignore ATTRIBUTE_UNUSED) | |
15661 | { | |
15662 | expressionS ex; | |
15663 | char *p; | |
15664 | ||
15665 | mips_emit_delays (); | |
15666 | ||
15667 | expression (&ex); | |
15668 | mips_clear_insn_labels (); | |
15669 | ||
15670 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
15671 | { | |
1661c76c | 15672 | as_bad (_("unsupported use of .ehword")); |
a3f278e2 CM |
15673 | ignore_rest_of_line (); |
15674 | } | |
15675 | ||
15676 | p = frag_more (4); | |
15677 | md_number_to_chars (p, 0, 4); | |
15678 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, | |
15679 | BFD_RELOC_MIPS_EH); | |
15680 | ||
15681 | demand_empty_rest_of_line (); | |
15682 | } | |
15683 | ||
252b5132 RH |
15684 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
15685 | tables in SVR4 PIC code. */ | |
15686 | ||
15687 | static void | |
17a2f251 | 15688 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 15689 | { |
252b5132 RH |
15690 | int reg; |
15691 | ||
10181a0d AO |
15692 | /* This is ignored when not generating SVR4 PIC code. */ |
15693 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
15694 | { |
15695 | s_ignore (0); | |
15696 | return; | |
15697 | } | |
15698 | ||
8a75745d MR |
15699 | mips_mark_labels (); |
15700 | mips_assembling_insn = TRUE; | |
15701 | ||
252b5132 | 15702 | /* Add $gp to the register named as an argument. */ |
584892a6 | 15703 | macro_start (); |
252b5132 | 15704 | reg = tc_get_register (0); |
67c0d1eb | 15705 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 15706 | macro_end (); |
252b5132 | 15707 | |
8a75745d | 15708 | mips_assembling_insn = FALSE; |
bdaaa2e1 | 15709 | demand_empty_rest_of_line (); |
252b5132 RH |
15710 | } |
15711 | ||
15712 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
df58fc94 | 15713 | mips16/micromips mode. This permits the linker to handle them specially, |
252b5132 RH |
15714 | such as generating jalx instructions when needed. We also make |
15715 | them odd for the duration of the assembly, in order to generate the | |
15716 | right sort of code. We will make them even in the adjust_symtab | |
15717 | routine, while leaving them marked. This is convenient for the | |
15718 | debugger and the disassembler. The linker knows to make them odd | |
15719 | again. */ | |
15720 | ||
15721 | static void | |
17a2f251 | 15722 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 15723 | { |
df58fc94 | 15724 | mips_mark_labels (); |
252b5132 RH |
15725 | |
15726 | demand_empty_rest_of_line (); | |
15727 | } | |
15728 | ||
ba92f887 MR |
15729 | /* Handle the .nan pseudo-op. */ |
15730 | ||
15731 | static void | |
15732 | s_nan (int ignore ATTRIBUTE_UNUSED) | |
15733 | { | |
15734 | static const char str_legacy[] = "legacy"; | |
15735 | static const char str_2008[] = "2008"; | |
15736 | size_t i; | |
15737 | ||
15738 | for (i = 0; !is_end_of_line[(unsigned char) input_line_pointer[i]]; i++); | |
15739 | ||
15740 | if (i == sizeof (str_2008) - 1 | |
15741 | && memcmp (input_line_pointer, str_2008, i) == 0) | |
15742 | mips_flag_nan2008 = TRUE; | |
15743 | else if (i == sizeof (str_legacy) - 1 | |
15744 | && memcmp (input_line_pointer, str_legacy, i) == 0) | |
15745 | mips_flag_nan2008 = FALSE; | |
15746 | else | |
1661c76c | 15747 | as_bad (_("bad .nan directive")); |
ba92f887 MR |
15748 | |
15749 | input_line_pointer += i; | |
15750 | demand_empty_rest_of_line (); | |
15751 | } | |
15752 | ||
754e2bb9 RS |
15753 | /* Handle a .stab[snd] directive. Ideally these directives would be |
15754 | implemented in a transparent way, so that removing them would not | |
15755 | have any effect on the generated instructions. However, s_stab | |
15756 | internally changes the section, so in practice we need to decide | |
15757 | now whether the preceding label marks compressed code. We do not | |
15758 | support changing the compression mode of a label after a .stab* | |
15759 | directive, such as in: | |
15760 | ||
15761 | foo: | |
15762 | .stabs ... | |
15763 | .set mips16 | |
15764 | ||
15765 | so the current mode wins. */ | |
252b5132 RH |
15766 | |
15767 | static void | |
17a2f251 | 15768 | s_mips_stab (int type) |
252b5132 | 15769 | { |
754e2bb9 | 15770 | mips_mark_labels (); |
252b5132 RH |
15771 | s_stab (type); |
15772 | } | |
15773 | ||
54f4ddb3 | 15774 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
252b5132 RH |
15775 | |
15776 | static void | |
17a2f251 | 15777 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
15778 | { |
15779 | char *name; | |
15780 | int c; | |
15781 | symbolS *symbolP; | |
15782 | expressionS exp; | |
15783 | ||
15784 | name = input_line_pointer; | |
15785 | c = get_symbol_end (); | |
15786 | symbolP = symbol_find_or_make (name); | |
15787 | S_SET_WEAK (symbolP); | |
15788 | *input_line_pointer = c; | |
15789 | ||
15790 | SKIP_WHITESPACE (); | |
15791 | ||
15792 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
15793 | { | |
15794 | if (S_IS_DEFINED (symbolP)) | |
15795 | { | |
20203fb9 | 15796 | as_bad (_("ignoring attempt to redefine symbol %s"), |
252b5132 RH |
15797 | S_GET_NAME (symbolP)); |
15798 | ignore_rest_of_line (); | |
15799 | return; | |
15800 | } | |
bdaaa2e1 | 15801 | |
252b5132 RH |
15802 | if (*input_line_pointer == ',') |
15803 | { | |
15804 | ++input_line_pointer; | |
15805 | SKIP_WHITESPACE (); | |
15806 | } | |
bdaaa2e1 | 15807 | |
252b5132 RH |
15808 | expression (&exp); |
15809 | if (exp.X_op != O_symbol) | |
15810 | { | |
20203fb9 | 15811 | as_bad (_("bad .weakext directive")); |
98d3f06f | 15812 | ignore_rest_of_line (); |
252b5132 RH |
15813 | return; |
15814 | } | |
49309057 | 15815 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
15816 | } |
15817 | ||
15818 | demand_empty_rest_of_line (); | |
15819 | } | |
15820 | ||
15821 | /* Parse a register string into a number. Called from the ECOFF code | |
15822 | to parse .frame. The argument is non-zero if this is the frame | |
15823 | register, so that we can record it in mips_frame_reg. */ | |
15824 | ||
15825 | int | |
17a2f251 | 15826 | tc_get_register (int frame) |
252b5132 | 15827 | { |
707bfff6 | 15828 | unsigned int reg; |
252b5132 RH |
15829 | |
15830 | SKIP_WHITESPACE (); | |
707bfff6 TS |
15831 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
15832 | reg = 0; | |
252b5132 | 15833 | if (frame) |
7a621144 DJ |
15834 | { |
15835 | mips_frame_reg = reg != 0 ? reg : SP; | |
15836 | mips_frame_reg_valid = 1; | |
15837 | mips_cprestore_valid = 0; | |
15838 | } | |
252b5132 RH |
15839 | return reg; |
15840 | } | |
15841 | ||
15842 | valueT | |
17a2f251 | 15843 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
15844 | { |
15845 | int align = bfd_get_section_alignment (stdoutput, seg); | |
15846 | ||
f3ded42a RS |
15847 | /* We don't need to align ELF sections to the full alignment. |
15848 | However, Irix 5 may prefer that we align them at least to a 16 | |
15849 | byte boundary. We don't bother to align the sections if we | |
15850 | are targeted for an embedded system. */ | |
15851 | if (strncmp (TARGET_OS, "elf", 3) == 0) | |
15852 | return addr; | |
15853 | if (align > 4) | |
15854 | align = 4; | |
252b5132 RH |
15855 | |
15856 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
15857 | } | |
15858 | ||
15859 | /* Utility routine, called from above as well. If called while the | |
15860 | input file is still being read, it's only an approximation. (For | |
15861 | example, a symbol may later become defined which appeared to be | |
15862 | undefined earlier.) */ | |
15863 | ||
15864 | static int | |
17a2f251 | 15865 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
15866 | { |
15867 | if (sym == 0) | |
15868 | return 0; | |
15869 | ||
4d0d148d | 15870 | if (g_switch_value > 0) |
252b5132 RH |
15871 | { |
15872 | const char *symname; | |
15873 | int change; | |
15874 | ||
c9914766 | 15875 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
15876 | register. It can be if it is smaller than the -G size or if |
15877 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 15878 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
15879 | they can. */ |
15880 | symname = S_GET_NAME (sym); | |
15881 | if (symname != (const char *) NULL | |
15882 | && (strcmp (symname, "eprol") == 0 | |
15883 | || strcmp (symname, "etext") == 0 | |
15884 | || strcmp (symname, "_gp") == 0 | |
15885 | || strcmp (symname, "edata") == 0 | |
15886 | || strcmp (symname, "_fbss") == 0 | |
15887 | || strcmp (symname, "_fdata") == 0 | |
15888 | || strcmp (symname, "_ftext") == 0 | |
15889 | || strcmp (symname, "end") == 0 | |
15890 | || strcmp (symname, "_gp_disp") == 0)) | |
15891 | change = 1; | |
15892 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
15893 | && (0 | |
15894 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
15895 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
15896 | && (symbol_get_obj (sym)->ecoff_extern_size | |
15897 | <= g_switch_value)) | |
252b5132 RH |
15898 | #endif |
15899 | /* We must defer this decision until after the whole | |
15900 | file has been read, since there might be a .extern | |
15901 | after the first use of this symbol. */ | |
15902 | || (before_relaxing | |
15903 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 15904 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
15905 | #endif |
15906 | && S_GET_VALUE (sym) == 0) | |
15907 | || (S_GET_VALUE (sym) != 0 | |
15908 | && S_GET_VALUE (sym) <= g_switch_value))) | |
15909 | change = 0; | |
15910 | else | |
15911 | { | |
15912 | const char *segname; | |
15913 | ||
15914 | segname = segment_name (S_GET_SEGMENT (sym)); | |
9c2799c2 | 15915 | gas_assert (strcmp (segname, ".lit8") != 0 |
252b5132 RH |
15916 | && strcmp (segname, ".lit4") != 0); |
15917 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
15918 | && strcmp (segname, ".sbss") != 0 |
15919 | && strncmp (segname, ".sdata.", 7) != 0 | |
d4dc2f22 TS |
15920 | && strncmp (segname, ".sbss.", 6) != 0 |
15921 | && strncmp (segname, ".gnu.linkonce.sb.", 17) != 0 | |
fba2b7f9 | 15922 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); |
252b5132 RH |
15923 | } |
15924 | return change; | |
15925 | } | |
15926 | else | |
c9914766 | 15927 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
15928 | return 1; |
15929 | } | |
15930 | ||
5919d012 RS |
15931 | |
15932 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
15933 | ||
15934 | static bfd_boolean | |
17a2f251 | 15935 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
15936 | { |
15937 | asection *symsec; | |
5919d012 RS |
15938 | |
15939 | /* Handle the case of a symbol equated to another symbol. */ | |
15940 | while (symbol_equated_reloc_p (sym)) | |
15941 | { | |
15942 | symbolS *n; | |
15943 | ||
5f0fe04b | 15944 | /* It's possible to get a loop here in a badly written program. */ |
5919d012 RS |
15945 | n = symbol_get_value_expression (sym)->X_add_symbol; |
15946 | if (n == sym) | |
15947 | break; | |
15948 | sym = n; | |
15949 | } | |
15950 | ||
df1f3cda DD |
15951 | if (symbol_section_p (sym)) |
15952 | return TRUE; | |
15953 | ||
5919d012 RS |
15954 | symsec = S_GET_SEGMENT (sym); |
15955 | ||
5919d012 | 15956 | /* This must duplicate the test in adjust_reloc_syms. */ |
45dfa85a AM |
15957 | return (!bfd_is_und_section (symsec) |
15958 | && !bfd_is_abs_section (symsec) | |
5f0fe04b TS |
15959 | && !bfd_is_com_section (symsec) |
15960 | && !s_is_linkonce (sym, segtype) | |
5919d012 | 15961 | /* A global or weak symbol is treated as external. */ |
f3ded42a | 15962 | && (!S_IS_WEAK (sym) && !S_IS_EXTERNAL (sym))); |
5919d012 RS |
15963 | } |
15964 | ||
15965 | ||
252b5132 RH |
15966 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
15967 | extended opcode. SEC is the section the frag is in. */ | |
15968 | ||
15969 | static int | |
17a2f251 | 15970 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
15971 | { |
15972 | int type; | |
3ccad066 | 15973 | const struct mips_int_operand *operand; |
252b5132 | 15974 | offsetT val; |
252b5132 | 15975 | segT symsec; |
98aa84af | 15976 | fragS *sym_frag; |
252b5132 RH |
15977 | |
15978 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
15979 | return 0; | |
15980 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
15981 | return 1; | |
15982 | ||
15983 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
3ccad066 | 15984 | operand = mips16_immed_operand (type, FALSE); |
252b5132 | 15985 | |
98aa84af | 15986 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 15987 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 15988 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 | 15989 | |
3ccad066 | 15990 | if (operand->root.type == OP_PCREL) |
252b5132 | 15991 | { |
3ccad066 | 15992 | const struct mips_pcrel_operand *pcrel_op; |
252b5132 | 15993 | addressT addr; |
3ccad066 | 15994 | offsetT maxtiny; |
252b5132 RH |
15995 | |
15996 | /* We won't have the section when we are called from | |
15997 | mips_relax_frag. However, we will always have been called | |
15998 | from md_estimate_size_before_relax first. If this is a | |
15999 | branch to a different section, we mark it as such. If SEC is | |
16000 | NULL, and the frag is not marked, then it must be a branch to | |
16001 | the same section. */ | |
3ccad066 | 16002 | pcrel_op = (const struct mips_pcrel_operand *) operand; |
252b5132 RH |
16003 | if (sec == NULL) |
16004 | { | |
16005 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
16006 | return 1; | |
16007 | } | |
16008 | else | |
16009 | { | |
98aa84af | 16010 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
16011 | if (symsec != sec) |
16012 | { | |
16013 | fragp->fr_subtype = | |
16014 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
16015 | ||
16016 | /* FIXME: We should support this, and let the linker | |
16017 | catch branches and loads that are out of range. */ | |
16018 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
16019 | _("unsupported PC relative reference to different section")); | |
16020 | ||
16021 | return 1; | |
16022 | } | |
98aa84af AM |
16023 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
16024 | /* Assume non-extended on the first relaxation pass. | |
16025 | The address we have calculated will be bogus if this is | |
16026 | a forward branch to another frag, as the forward frag | |
16027 | will have fr_address == 0. */ | |
16028 | return 0; | |
252b5132 RH |
16029 | } |
16030 | ||
16031 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
16032 | the same section. If the relax_marker of the symbol fragment |
16033 | differs from the relax_marker of this fragment, we have not | |
16034 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
16035 | in STRETCH in order to get a better estimate of the address. |
16036 | This particularly matters because of the shift bits. */ | |
16037 | if (stretch != 0 | |
98aa84af | 16038 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
16039 | { |
16040 | fragS *f; | |
16041 | ||
16042 | /* Adjust stretch for any alignment frag. Note that if have | |
16043 | been expanding the earlier code, the symbol may be | |
16044 | defined in what appears to be an earlier frag. FIXME: | |
16045 | This doesn't handle the fr_subtype field, which specifies | |
16046 | a maximum number of bytes to skip when doing an | |
16047 | alignment. */ | |
98aa84af | 16048 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
16049 | { |
16050 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
16051 | { | |
16052 | if (stretch < 0) | |
16053 | stretch = - ((- stretch) | |
16054 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
16055 | else | |
16056 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
16057 | if (stretch == 0) | |
16058 | break; | |
16059 | } | |
16060 | } | |
16061 | if (f != NULL) | |
16062 | val += stretch; | |
16063 | } | |
16064 | ||
16065 | addr = fragp->fr_address + fragp->fr_fix; | |
16066 | ||
16067 | /* The base address rules are complicated. The base address of | |
16068 | a branch is the following instruction. The base address of a | |
16069 | PC relative load or add is the instruction itself, but if it | |
16070 | is in a delay slot (in which case it can not be extended) use | |
16071 | the address of the instruction whose delay slot it is in. */ | |
3ccad066 | 16072 | if (pcrel_op->include_isa_bit) |
252b5132 RH |
16073 | { |
16074 | addr += 2; | |
16075 | ||
16076 | /* If we are currently assuming that this frag should be | |
16077 | extended, then, the current address is two bytes | |
bdaaa2e1 | 16078 | higher. */ |
252b5132 RH |
16079 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
16080 | addr += 2; | |
16081 | ||
16082 | /* Ignore the low bit in the target, since it will be set | |
16083 | for a text label. */ | |
3ccad066 | 16084 | val &= -2; |
252b5132 RH |
16085 | } |
16086 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
16087 | addr -= 4; | |
16088 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
16089 | addr -= 2; | |
16090 | ||
3ccad066 | 16091 | val -= addr & -(1 << pcrel_op->align_log2); |
252b5132 RH |
16092 | |
16093 | /* If any of the shifted bits are set, we must use an extended | |
16094 | opcode. If the address depends on the size of this | |
16095 | instruction, this can lead to a loop, so we arrange to always | |
16096 | use an extended opcode. We only check this when we are in | |
16097 | the main relaxation loop, when SEC is NULL. */ | |
3ccad066 | 16098 | if ((val & ((1 << operand->shift) - 1)) != 0 && sec == NULL) |
252b5132 RH |
16099 | { |
16100 | fragp->fr_subtype = | |
16101 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
16102 | return 1; | |
16103 | } | |
16104 | ||
16105 | /* If we are about to mark a frag as extended because the value | |
3ccad066 RS |
16106 | is precisely the next value above maxtiny, then there is a |
16107 | chance of an infinite loop as in the following code: | |
252b5132 RH |
16108 | la $4,foo |
16109 | .skip 1020 | |
16110 | .align 2 | |
16111 | foo: | |
16112 | In this case when the la is extended, foo is 0x3fc bytes | |
16113 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
16114 | the la must be extended. To avoid this loop, we mark the | |
16115 | frag as extended if it was small, and is about to become | |
3ccad066 RS |
16116 | extended with the next value above maxtiny. */ |
16117 | maxtiny = mips_int_operand_max (operand); | |
16118 | if (val == maxtiny + (1 << operand->shift) | |
252b5132 RH |
16119 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) |
16120 | && sec == NULL) | |
16121 | { | |
16122 | fragp->fr_subtype = | |
16123 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
16124 | return 1; | |
16125 | } | |
16126 | } | |
16127 | else if (symsec != absolute_section && sec != NULL) | |
16128 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
16129 | ||
3ccad066 | 16130 | return !mips16_immed_in_range_p (operand, BFD_RELOC_UNUSED, val); |
252b5132 RH |
16131 | } |
16132 | ||
4a6a3df4 AO |
16133 | /* Compute the length of a branch sequence, and adjust the |
16134 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
16135 | worst-case length is computed, with UPDATE being used to indicate | |
16136 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
16137 | branch is to be computed. */ | |
16138 | static int | |
17a2f251 | 16139 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 16140 | { |
b34976b6 | 16141 | bfd_boolean toofar; |
4a6a3df4 AO |
16142 | int length; |
16143 | ||
16144 | if (fragp | |
16145 | && S_IS_DEFINED (fragp->fr_symbol) | |
16146 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
16147 | { | |
16148 | addressT addr; | |
16149 | offsetT val; | |
16150 | ||
16151 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
16152 | ||
16153 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
16154 | ||
16155 | val -= addr; | |
16156 | ||
16157 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
16158 | } | |
16159 | else if (fragp) | |
16160 | /* If the symbol is not defined or it's in a different segment, | |
16161 | assume the user knows what's going on and emit a short | |
16162 | branch. */ | |
b34976b6 | 16163 | toofar = FALSE; |
4a6a3df4 | 16164 | else |
b34976b6 | 16165 | toofar = TRUE; |
4a6a3df4 AO |
16166 | |
16167 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
16168 | fragp->fr_subtype | |
66b3e8da MR |
16169 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_AT (fragp->fr_subtype), |
16170 | RELAX_BRANCH_UNCOND (fragp->fr_subtype), | |
4a6a3df4 AO |
16171 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
16172 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
16173 | toofar); | |
16174 | ||
16175 | length = 4; | |
16176 | if (toofar) | |
16177 | { | |
16178 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
16179 | length += 8; | |
16180 | ||
16181 | if (mips_pic != NO_PIC) | |
16182 | { | |
16183 | /* Additional space for PIC loading of target address. */ | |
16184 | length += 8; | |
16185 | if (mips_opts.isa == ISA_MIPS1) | |
16186 | /* Additional space for $at-stabilizing nop. */ | |
16187 | length += 4; | |
16188 | } | |
16189 | ||
16190 | /* If branch is conditional. */ | |
16191 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
16192 | length += 8; | |
16193 | } | |
b34976b6 | 16194 | |
4a6a3df4 AO |
16195 | return length; |
16196 | } | |
16197 | ||
df58fc94 RS |
16198 | /* Compute the length of a branch sequence, and adjust the |
16199 | RELAX_MICROMIPS_TOOFAR32 bit accordingly. If FRAGP is NULL, the | |
16200 | worst-case length is computed, with UPDATE being used to indicate | |
16201 | whether an unconditional (-1), or regular (0) branch is to be | |
16202 | computed. */ | |
16203 | ||
16204 | static int | |
16205 | relaxed_micromips_32bit_branch_length (fragS *fragp, asection *sec, int update) | |
16206 | { | |
16207 | bfd_boolean toofar; | |
16208 | int length; | |
16209 | ||
16210 | if (fragp | |
16211 | && S_IS_DEFINED (fragp->fr_symbol) | |
16212 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
16213 | { | |
16214 | addressT addr; | |
16215 | offsetT val; | |
16216 | ||
16217 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
16218 | /* Ignore the low bit in the target, since it will be set | |
16219 | for a text label. */ | |
16220 | if ((val & 1) != 0) | |
16221 | --val; | |
16222 | ||
16223 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
16224 | ||
16225 | val -= addr; | |
16226 | ||
16227 | toofar = val < - (0x8000 << 1) || val >= (0x8000 << 1); | |
16228 | } | |
16229 | else if (fragp) | |
16230 | /* If the symbol is not defined or it's in a different segment, | |
16231 | assume the user knows what's going on and emit a short | |
16232 | branch. */ | |
16233 | toofar = FALSE; | |
16234 | else | |
16235 | toofar = TRUE; | |
16236 | ||
16237 | if (fragp && update | |
16238 | && toofar != RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
16239 | fragp->fr_subtype = (toofar | |
16240 | ? RELAX_MICROMIPS_MARK_TOOFAR32 (fragp->fr_subtype) | |
16241 | : RELAX_MICROMIPS_CLEAR_TOOFAR32 (fragp->fr_subtype)); | |
16242 | ||
16243 | length = 4; | |
16244 | if (toofar) | |
16245 | { | |
16246 | bfd_boolean compact_known = fragp != NULL; | |
16247 | bfd_boolean compact = FALSE; | |
16248 | bfd_boolean uncond; | |
16249 | ||
16250 | if (compact_known) | |
16251 | compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); | |
16252 | if (fragp) | |
16253 | uncond = RELAX_MICROMIPS_UNCOND (fragp->fr_subtype); | |
16254 | else | |
16255 | uncond = update < 0; | |
16256 | ||
16257 | /* If label is out of range, we turn branch <br>: | |
16258 | ||
16259 | <br> label # 4 bytes | |
16260 | 0: | |
16261 | ||
16262 | into: | |
16263 | ||
16264 | j label # 4 bytes | |
16265 | nop # 2 bytes if compact && !PIC | |
16266 | 0: | |
16267 | */ | |
16268 | if (mips_pic == NO_PIC && (!compact_known || compact)) | |
16269 | length += 2; | |
16270 | ||
16271 | /* If assembling PIC code, we further turn: | |
16272 | ||
16273 | j label # 4 bytes | |
16274 | ||
16275 | into: | |
16276 | ||
16277 | lw/ld at, %got(label)(gp) # 4 bytes | |
16278 | d/addiu at, %lo(label) # 4 bytes | |
16279 | jr/c at # 2 bytes | |
16280 | */ | |
16281 | if (mips_pic != NO_PIC) | |
16282 | length += 6; | |
16283 | ||
16284 | /* If branch <br> is conditional, we prepend negated branch <brneg>: | |
16285 | ||
16286 | <brneg> 0f # 4 bytes | |
16287 | nop # 2 bytes if !compact | |
16288 | */ | |
16289 | if (!uncond) | |
16290 | length += (compact_known && compact) ? 4 : 6; | |
16291 | } | |
16292 | ||
16293 | return length; | |
16294 | } | |
16295 | ||
16296 | /* Compute the length of a branch, and adjust the RELAX_MICROMIPS_TOOFAR16 | |
16297 | bit accordingly. */ | |
16298 | ||
16299 | static int | |
16300 | relaxed_micromips_16bit_branch_length (fragS *fragp, asection *sec, int update) | |
16301 | { | |
16302 | bfd_boolean toofar; | |
16303 | ||
df58fc94 RS |
16304 | if (fragp |
16305 | && S_IS_DEFINED (fragp->fr_symbol) | |
16306 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
16307 | { | |
16308 | addressT addr; | |
16309 | offsetT val; | |
16310 | int type; | |
16311 | ||
16312 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
16313 | /* Ignore the low bit in the target, since it will be set | |
16314 | for a text label. */ | |
16315 | if ((val & 1) != 0) | |
16316 | --val; | |
16317 | ||
16318 | /* Assume this is a 2-byte branch. */ | |
16319 | addr = fragp->fr_address + fragp->fr_fix + 2; | |
16320 | ||
16321 | /* We try to avoid the infinite loop by not adding 2 more bytes for | |
16322 | long branches. */ | |
16323 | ||
16324 | val -= addr; | |
16325 | ||
16326 | type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
16327 | if (type == 'D') | |
16328 | toofar = val < - (0x200 << 1) || val >= (0x200 << 1); | |
16329 | else if (type == 'E') | |
16330 | toofar = val < - (0x40 << 1) || val >= (0x40 << 1); | |
16331 | else | |
16332 | abort (); | |
16333 | } | |
16334 | else | |
16335 | /* If the symbol is not defined or it's in a different segment, | |
16336 | we emit a normal 32-bit branch. */ | |
16337 | toofar = TRUE; | |
16338 | ||
16339 | if (fragp && update | |
16340 | && toofar != RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
16341 | fragp->fr_subtype | |
16342 | = toofar ? RELAX_MICROMIPS_MARK_TOOFAR16 (fragp->fr_subtype) | |
16343 | : RELAX_MICROMIPS_CLEAR_TOOFAR16 (fragp->fr_subtype); | |
16344 | ||
16345 | if (toofar) | |
16346 | return 4; | |
16347 | ||
16348 | return 2; | |
16349 | } | |
16350 | ||
252b5132 RH |
16351 | /* Estimate the size of a frag before relaxing. Unless this is the |
16352 | mips16, we are not really relaxing here, and the final size is | |
16353 | encoded in the subtype information. For the mips16, we have to | |
16354 | decide whether we are using an extended opcode or not. */ | |
16355 | ||
252b5132 | 16356 | int |
17a2f251 | 16357 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 16358 | { |
5919d012 | 16359 | int change; |
252b5132 | 16360 | |
4a6a3df4 AO |
16361 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
16362 | { | |
16363 | ||
b34976b6 AM |
16364 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
16365 | ||
4a6a3df4 AO |
16366 | return fragp->fr_var; |
16367 | } | |
16368 | ||
252b5132 | 16369 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
16370 | /* We don't want to modify the EXTENDED bit here; it might get us |
16371 | into infinite loops. We change it only in mips_relax_frag(). */ | |
16372 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 | 16373 | |
df58fc94 RS |
16374 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
16375 | { | |
16376 | int length = 4; | |
16377 | ||
16378 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
16379 | length = relaxed_micromips_16bit_branch_length (fragp, segtype, FALSE); | |
16380 | if (length == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
16381 | length = relaxed_micromips_32bit_branch_length (fragp, segtype, FALSE); | |
16382 | fragp->fr_var = length; | |
16383 | ||
16384 | return length; | |
16385 | } | |
16386 | ||
252b5132 | 16387 | if (mips_pic == NO_PIC) |
5919d012 | 16388 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 16389 | else if (mips_pic == SVR4_PIC) |
5919d012 | 16390 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
16391 | else if (mips_pic == VXWORKS_PIC) |
16392 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
16393 | change = 0; | |
252b5132 RH |
16394 | else |
16395 | abort (); | |
16396 | ||
16397 | if (change) | |
16398 | { | |
4d7206a2 | 16399 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 16400 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 16401 | } |
4d7206a2 RS |
16402 | else |
16403 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
16404 | } |
16405 | ||
16406 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 16407 | should be converted into a reloc against a section. */ |
252b5132 RH |
16408 | |
16409 | int | |
17a2f251 | 16410 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 16411 | { |
252b5132 RH |
16412 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
16413 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
16414 | return 0; | |
a161fe53 | 16415 | |
252b5132 RH |
16416 | if (fixp->fx_addsy == NULL) |
16417 | return 1; | |
a161fe53 | 16418 | |
de7e6852 RS |
16419 | /* If symbol SYM is in a mergeable section, relocations of the form |
16420 | SYM + 0 can usually be made section-relative. The mergeable data | |
16421 | is then identified by the section offset rather than by the symbol. | |
16422 | ||
16423 | However, if we're generating REL LO16 relocations, the offset is split | |
16424 | between the LO16 and parterning high part relocation. The linker will | |
16425 | need to recalculate the complete offset in order to correctly identify | |
16426 | the merge data. | |
16427 | ||
16428 | The linker has traditionally not looked for the parterning high part | |
16429 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
16430 | placed anywhere. Rather than break backwards compatibility by changing | |
16431 | this, it seems better not to force the issue, and instead keep the | |
16432 | original symbol. This will work with either linker behavior. */ | |
738e5348 | 16433 | if ((lo16_reloc_p (fixp->fx_r_type) |
704803a9 | 16434 | || reloc_needs_lo_p (fixp->fx_r_type)) |
de7e6852 RS |
16435 | && HAVE_IN_PLACE_ADDENDS |
16436 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
16437 | return 0; | |
16438 | ||
ce70d90a | 16439 | /* There is no place to store an in-place offset for JALR relocations. |
2de39019 CM |
16440 | Likewise an in-range offset of limited PC-relative relocations may |
16441 | overflow the in-place relocatable field if recalculated against the | |
16442 | start address of the symbol's containing section. */ | |
ce70d90a | 16443 | if (HAVE_IN_PLACE_ADDENDS |
2de39019 CM |
16444 | && (limited_pcrel_reloc_p (fixp->fx_r_type) |
16445 | || jalr_reloc_p (fixp->fx_r_type))) | |
1180b5a4 RS |
16446 | return 0; |
16447 | ||
b314ec0e RS |
16448 | /* R_MIPS16_26 relocations against non-MIPS16 functions might resolve |
16449 | to a floating-point stub. The same is true for non-R_MIPS16_26 | |
16450 | relocations against MIPS16 functions; in this case, the stub becomes | |
16451 | the function's canonical address. | |
16452 | ||
16453 | Floating-point stubs are stored in unique .mips16.call.* or | |
16454 | .mips16.fn.* sections. If a stub T for function F is in section S, | |
16455 | the first relocation in section S must be against F; this is how the | |
16456 | linker determines the target function. All relocations that might | |
16457 | resolve to T must also be against F. We therefore have the following | |
16458 | restrictions, which are given in an intentionally-redundant way: | |
16459 | ||
16460 | 1. We cannot reduce R_MIPS16_26 relocations against non-MIPS16 | |
16461 | symbols. | |
16462 | ||
16463 | 2. We cannot reduce a stub's relocations against non-MIPS16 symbols | |
16464 | if that stub might be used. | |
16465 | ||
16466 | 3. We cannot reduce non-R_MIPS16_26 relocations against MIPS16 | |
16467 | symbols. | |
16468 | ||
16469 | 4. We cannot reduce a stub's relocations against MIPS16 symbols if | |
16470 | that stub might be used. | |
16471 | ||
16472 | There is a further restriction: | |
16473 | ||
df58fc94 RS |
16474 | 5. We cannot reduce jump relocations (R_MIPS_26, R_MIPS16_26 or |
16475 | R_MICROMIPS_26_S1) against MIPS16 or microMIPS symbols on | |
16476 | targets with in-place addends; the relocation field cannot | |
b314ec0e RS |
16477 | encode the low bit. |
16478 | ||
df58fc94 RS |
16479 | For simplicity, we deal with (3)-(4) by not reducing _any_ relocation |
16480 | against a MIPS16 symbol. We deal with (5) by by not reducing any | |
16481 | such relocations on REL targets. | |
b314ec0e RS |
16482 | |
16483 | We deal with (1)-(2) by saying that, if there's a R_MIPS16_26 | |
16484 | relocation against some symbol R, no relocation against R may be | |
16485 | reduced. (Note that this deals with (2) as well as (1) because | |
16486 | relocations against global symbols will never be reduced on ELF | |
16487 | targets.) This approach is a little simpler than trying to detect | |
16488 | stub sections, and gives the "all or nothing" per-symbol consistency | |
16489 | that we have for MIPS16 symbols. */ | |
f3ded42a | 16490 | if (fixp->fx_subsy == NULL |
30c09090 | 16491 | && (ELF_ST_IS_MIPS16 (S_GET_OTHER (fixp->fx_addsy)) |
df58fc94 RS |
16492 | || *symbol_get_tc (fixp->fx_addsy) |
16493 | || (HAVE_IN_PLACE_ADDENDS | |
16494 | && ELF_ST_IS_MICROMIPS (S_GET_OTHER (fixp->fx_addsy)) | |
16495 | && jmp_reloc_p (fixp->fx_r_type)))) | |
252b5132 | 16496 | return 0; |
a161fe53 | 16497 | |
252b5132 RH |
16498 | return 1; |
16499 | } | |
16500 | ||
16501 | /* Translate internal representation of relocation info to BFD target | |
16502 | format. */ | |
16503 | ||
16504 | arelent ** | |
17a2f251 | 16505 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
16506 | { |
16507 | static arelent *retval[4]; | |
16508 | arelent *reloc; | |
16509 | bfd_reloc_code_real_type code; | |
16510 | ||
4b0cff4e TS |
16511 | memset (retval, 0, sizeof(retval)); |
16512 | reloc = retval[0] = (arelent *) xcalloc (1, sizeof (arelent)); | |
49309057 ILT |
16513 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
16514 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
16515 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
16516 | ||
bad36eac DJ |
16517 | if (fixp->fx_pcrel) |
16518 | { | |
df58fc94 RS |
16519 | gas_assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2 |
16520 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
16521 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
b47468a6 CM |
16522 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1 |
16523 | || fixp->fx_r_type == BFD_RELOC_32_PCREL); | |
bad36eac DJ |
16524 | |
16525 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
16526 | Relocations want only the symbol offset. */ | |
16527 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
bad36eac DJ |
16528 | } |
16529 | else | |
16530 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 16531 | |
438c16b8 TS |
16532 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
16533 | entry to be used in the relocation's section offset. */ | |
16534 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
16535 | { |
16536 | reloc->address = reloc->addend; | |
16537 | reloc->addend = 0; | |
16538 | } | |
16539 | ||
252b5132 | 16540 | code = fixp->fx_r_type; |
252b5132 | 16541 | |
bad36eac | 16542 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
16543 | if (reloc->howto == NULL) |
16544 | { | |
16545 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1661c76c RS |
16546 | _("cannot represent %s relocation in this object file" |
16547 | " format"), | |
252b5132 RH |
16548 | bfd_get_reloc_code_name (code)); |
16549 | retval[0] = NULL; | |
16550 | } | |
16551 | ||
16552 | return retval; | |
16553 | } | |
16554 | ||
16555 | /* Relax a machine dependent frag. This returns the amount by which | |
16556 | the current size of the frag should change. */ | |
16557 | ||
16558 | int | |
17a2f251 | 16559 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 16560 | { |
4a6a3df4 AO |
16561 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
16562 | { | |
16563 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
16564 | |
16565 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
16566 | |
16567 | return fragp->fr_var - old_var; | |
16568 | } | |
16569 | ||
df58fc94 RS |
16570 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
16571 | { | |
16572 | offsetT old_var = fragp->fr_var; | |
16573 | offsetT new_var = 4; | |
16574 | ||
16575 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
16576 | new_var = relaxed_micromips_16bit_branch_length (fragp, sec, TRUE); | |
16577 | if (new_var == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
16578 | new_var = relaxed_micromips_32bit_branch_length (fragp, sec, TRUE); | |
16579 | fragp->fr_var = new_var; | |
16580 | ||
16581 | return new_var - old_var; | |
16582 | } | |
16583 | ||
252b5132 RH |
16584 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
16585 | return 0; | |
16586 | ||
c4e7957c | 16587 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
16588 | { |
16589 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
16590 | return 0; | |
16591 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
16592 | return 2; | |
16593 | } | |
16594 | else | |
16595 | { | |
16596 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
16597 | return 0; | |
16598 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
16599 | return -2; | |
16600 | } | |
16601 | ||
16602 | return 0; | |
16603 | } | |
16604 | ||
16605 | /* Convert a machine dependent frag. */ | |
16606 | ||
16607 | void | |
17a2f251 | 16608 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 16609 | { |
4a6a3df4 AO |
16610 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
16611 | { | |
4d68580a | 16612 | char *buf; |
4a6a3df4 AO |
16613 | unsigned long insn; |
16614 | expressionS exp; | |
16615 | fixS *fixp; | |
b34976b6 | 16616 | |
4d68580a RS |
16617 | buf = fragp->fr_literal + fragp->fr_fix; |
16618 | insn = read_insn (buf); | |
b34976b6 | 16619 | |
4a6a3df4 AO |
16620 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
16621 | { | |
16622 | /* We generate a fixup instead of applying it right now | |
16623 | because, if there are linker relaxations, we're going to | |
16624 | need the relocations. */ | |
16625 | exp.X_op = O_symbol; | |
16626 | exp.X_add_symbol = fragp->fr_symbol; | |
16627 | exp.X_add_number = fragp->fr_offset; | |
16628 | ||
4d68580a RS |
16629 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, TRUE, |
16630 | BFD_RELOC_16_PCREL_S2); | |
4a6a3df4 AO |
16631 | fixp->fx_file = fragp->fr_file; |
16632 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 16633 | |
4d68580a | 16634 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
16635 | } |
16636 | else | |
16637 | { | |
16638 | int i; | |
16639 | ||
16640 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
1661c76c | 16641 | _("relaxed out-of-range branch into a jump")); |
4a6a3df4 AO |
16642 | |
16643 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
16644 | goto uncond; | |
16645 | ||
16646 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
16647 | { | |
16648 | /* Reverse the branch. */ | |
16649 | switch ((insn >> 28) & 0xf) | |
16650 | { | |
16651 | case 4: | |
56d438b1 CF |
16652 | if ((insn & 0xff000000) == 0x47000000 |
16653 | || (insn & 0xff600000) == 0x45600000) | |
16654 | { | |
16655 | /* BZ.df/BNZ.df, BZ.V/BNZ.V can have the condition | |
16656 | reversed by tweaking bit 23. */ | |
16657 | insn ^= 0x00800000; | |
16658 | } | |
16659 | else | |
16660 | { | |
16661 | /* bc[0-3][tf]l? instructions can have the condition | |
16662 | reversed by tweaking a single TF bit, and their | |
16663 | opcodes all have 0x4???????. */ | |
16664 | gas_assert ((insn & 0xf3e00000) == 0x41000000); | |
16665 | insn ^= 0x00010000; | |
16666 | } | |
4a6a3df4 AO |
16667 | break; |
16668 | ||
16669 | case 0: | |
16670 | /* bltz 0x04000000 bgez 0x04010000 | |
54f4ddb3 | 16671 | bltzal 0x04100000 bgezal 0x04110000 */ |
9c2799c2 | 16672 | gas_assert ((insn & 0xfc0e0000) == 0x04000000); |
4a6a3df4 AO |
16673 | insn ^= 0x00010000; |
16674 | break; | |
b34976b6 | 16675 | |
4a6a3df4 AO |
16676 | case 1: |
16677 | /* beq 0x10000000 bne 0x14000000 | |
54f4ddb3 | 16678 | blez 0x18000000 bgtz 0x1c000000 */ |
4a6a3df4 AO |
16679 | insn ^= 0x04000000; |
16680 | break; | |
16681 | ||
16682 | default: | |
16683 | abort (); | |
16684 | } | |
16685 | } | |
16686 | ||
16687 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
16688 | { | |
16689 | /* Clear the and-link bit. */ | |
9c2799c2 | 16690 | gas_assert ((insn & 0xfc1c0000) == 0x04100000); |
4a6a3df4 | 16691 | |
54f4ddb3 TS |
16692 | /* bltzal 0x04100000 bgezal 0x04110000 |
16693 | bltzall 0x04120000 bgezall 0x04130000 */ | |
4a6a3df4 AO |
16694 | insn &= ~0x00100000; |
16695 | } | |
16696 | ||
16697 | /* Branch over the branch (if the branch was likely) or the | |
16698 | full jump (not likely case). Compute the offset from the | |
16699 | current instruction to branch to. */ | |
16700 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
16701 | i = 16; | |
16702 | else | |
16703 | { | |
16704 | /* How many bytes in instructions we've already emitted? */ | |
4d68580a | 16705 | i = buf - fragp->fr_literal - fragp->fr_fix; |
4a6a3df4 AO |
16706 | /* How many bytes in instructions from here to the end? */ |
16707 | i = fragp->fr_var - i; | |
16708 | } | |
16709 | /* Convert to instruction count. */ | |
16710 | i >>= 2; | |
16711 | /* Branch counts from the next instruction. */ | |
b34976b6 | 16712 | i--; |
4a6a3df4 AO |
16713 | insn |= i; |
16714 | /* Branch over the jump. */ | |
4d68580a | 16715 | buf = write_insn (buf, insn); |
4a6a3df4 | 16716 | |
54f4ddb3 | 16717 | /* nop */ |
4d68580a | 16718 | buf = write_insn (buf, 0); |
4a6a3df4 AO |
16719 | |
16720 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
16721 | { | |
16722 | /* beql $0, $0, 2f */ | |
16723 | insn = 0x50000000; | |
16724 | /* Compute the PC offset from the current instruction to | |
16725 | the end of the variable frag. */ | |
16726 | /* How many bytes in instructions we've already emitted? */ | |
4d68580a | 16727 | i = buf - fragp->fr_literal - fragp->fr_fix; |
4a6a3df4 AO |
16728 | /* How many bytes in instructions from here to the end? */ |
16729 | i = fragp->fr_var - i; | |
16730 | /* Convert to instruction count. */ | |
16731 | i >>= 2; | |
16732 | /* Don't decrement i, because we want to branch over the | |
16733 | delay slot. */ | |
4a6a3df4 | 16734 | insn |= i; |
4a6a3df4 | 16735 | |
4d68580a RS |
16736 | buf = write_insn (buf, insn); |
16737 | buf = write_insn (buf, 0); | |
4a6a3df4 AO |
16738 | } |
16739 | ||
16740 | uncond: | |
16741 | if (mips_pic == NO_PIC) | |
16742 | { | |
16743 | /* j or jal. */ | |
16744 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
16745 | ? 0x0c000000 : 0x08000000); | |
16746 | exp.X_op = O_symbol; | |
16747 | exp.X_add_symbol = fragp->fr_symbol; | |
16748 | exp.X_add_number = fragp->fr_offset; | |
16749 | ||
4d68580a RS |
16750 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
16751 | FALSE, BFD_RELOC_MIPS_JMP); | |
4a6a3df4 AO |
16752 | fixp->fx_file = fragp->fr_file; |
16753 | fixp->fx_line = fragp->fr_line; | |
16754 | ||
4d68580a | 16755 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
16756 | } |
16757 | else | |
16758 | { | |
66b3e8da MR |
16759 | unsigned long at = RELAX_BRANCH_AT (fragp->fr_subtype); |
16760 | ||
4a6a3df4 | 16761 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ |
66b3e8da MR |
16762 | insn = HAVE_64BIT_ADDRESSES ? 0xdf800000 : 0x8f800000; |
16763 | insn |= at << OP_SH_RT; | |
4a6a3df4 AO |
16764 | exp.X_op = O_symbol; |
16765 | exp.X_add_symbol = fragp->fr_symbol; | |
16766 | exp.X_add_number = fragp->fr_offset; | |
16767 | ||
16768 | if (fragp->fr_offset) | |
16769 | { | |
16770 | exp.X_add_symbol = make_expr_symbol (&exp); | |
16771 | exp.X_add_number = 0; | |
16772 | } | |
16773 | ||
4d68580a RS |
16774 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
16775 | FALSE, BFD_RELOC_MIPS_GOT16); | |
4a6a3df4 AO |
16776 | fixp->fx_file = fragp->fr_file; |
16777 | fixp->fx_line = fragp->fr_line; | |
16778 | ||
4d68580a | 16779 | buf = write_insn (buf, insn); |
b34976b6 | 16780 | |
4a6a3df4 | 16781 | if (mips_opts.isa == ISA_MIPS1) |
4d68580a RS |
16782 | /* nop */ |
16783 | buf = write_insn (buf, 0); | |
4a6a3df4 AO |
16784 | |
16785 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
66b3e8da MR |
16786 | insn = HAVE_64BIT_ADDRESSES ? 0x64000000 : 0x24000000; |
16787 | insn |= at << OP_SH_RS | at << OP_SH_RT; | |
4a6a3df4 | 16788 | |
4d68580a RS |
16789 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
16790 | FALSE, BFD_RELOC_LO16); | |
4a6a3df4 AO |
16791 | fixp->fx_file = fragp->fr_file; |
16792 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 16793 | |
4d68580a | 16794 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
16795 | |
16796 | /* j(al)r $at. */ | |
16797 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
66b3e8da | 16798 | insn = 0x0000f809; |
4a6a3df4 | 16799 | else |
66b3e8da MR |
16800 | insn = 0x00000008; |
16801 | insn |= at << OP_SH_RS; | |
4a6a3df4 | 16802 | |
4d68580a | 16803 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
16804 | } |
16805 | } | |
16806 | ||
4a6a3df4 | 16807 | fragp->fr_fix += fragp->fr_var; |
4d68580a | 16808 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); |
4a6a3df4 AO |
16809 | return; |
16810 | } | |
16811 | ||
df58fc94 RS |
16812 | /* Relax microMIPS branches. */ |
16813 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) | |
16814 | { | |
4d68580a | 16815 | char *buf = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
16816 | bfd_boolean compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); |
16817 | bfd_boolean al = RELAX_MICROMIPS_LINK (fragp->fr_subtype); | |
16818 | int type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
2309ddf2 | 16819 | bfd_boolean short_ds; |
df58fc94 RS |
16820 | unsigned long insn; |
16821 | expressionS exp; | |
16822 | fixS *fixp; | |
16823 | ||
16824 | exp.X_op = O_symbol; | |
16825 | exp.X_add_symbol = fragp->fr_symbol; | |
16826 | exp.X_add_number = fragp->fr_offset; | |
16827 | ||
16828 | fragp->fr_fix += fragp->fr_var; | |
16829 | ||
16830 | /* Handle 16-bit branches that fit or are forced to fit. */ | |
16831 | if (type != 0 && !RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
16832 | { | |
16833 | /* We generate a fixup instead of applying it right now, | |
16834 | because if there is linker relaxation, we're going to | |
16835 | need the relocations. */ | |
16836 | if (type == 'D') | |
4d68580a | 16837 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 2, &exp, TRUE, |
df58fc94 RS |
16838 | BFD_RELOC_MICROMIPS_10_PCREL_S1); |
16839 | else if (type == 'E') | |
4d68580a | 16840 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 2, &exp, TRUE, |
df58fc94 RS |
16841 | BFD_RELOC_MICROMIPS_7_PCREL_S1); |
16842 | else | |
16843 | abort (); | |
16844 | ||
16845 | fixp->fx_file = fragp->fr_file; | |
16846 | fixp->fx_line = fragp->fr_line; | |
16847 | ||
16848 | /* These relocations can have an addend that won't fit in | |
16849 | 2 octets. */ | |
16850 | fixp->fx_no_overflow = 1; | |
16851 | ||
16852 | return; | |
16853 | } | |
16854 | ||
2309ddf2 | 16855 | /* Handle 32-bit branches that fit or are forced to fit. */ |
df58fc94 RS |
16856 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) |
16857 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
16858 | { | |
16859 | /* We generate a fixup instead of applying it right now, | |
16860 | because if there is linker relaxation, we're going to | |
16861 | need the relocations. */ | |
4d68580a RS |
16862 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, TRUE, |
16863 | BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
df58fc94 RS |
16864 | fixp->fx_file = fragp->fr_file; |
16865 | fixp->fx_line = fragp->fr_line; | |
16866 | ||
16867 | if (type == 0) | |
16868 | return; | |
16869 | } | |
16870 | ||
16871 | /* Relax 16-bit branches to 32-bit branches. */ | |
16872 | if (type != 0) | |
16873 | { | |
4d68580a | 16874 | insn = read_compressed_insn (buf, 2); |
df58fc94 RS |
16875 | |
16876 | if ((insn & 0xfc00) == 0xcc00) /* b16 */ | |
16877 | insn = 0x94000000; /* beq */ | |
16878 | else if ((insn & 0xdc00) == 0x8c00) /* beqz16/bnez16 */ | |
16879 | { | |
16880 | unsigned long regno; | |
16881 | ||
16882 | regno = (insn >> MICROMIPSOP_SH_MD) & MICROMIPSOP_MASK_MD; | |
16883 | regno = micromips_to_32_reg_d_map [regno]; | |
16884 | insn = ((insn & 0x2000) << 16) | 0x94000000; /* beq/bne */ | |
16885 | insn |= regno << MICROMIPSOP_SH_RS; | |
16886 | } | |
16887 | else | |
16888 | abort (); | |
16889 | ||
16890 | /* Nothing else to do, just write it out. */ | |
16891 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) | |
16892 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
16893 | { | |
4d68580a RS |
16894 | buf = write_compressed_insn (buf, insn, 4); |
16895 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); | |
df58fc94 RS |
16896 | return; |
16897 | } | |
16898 | } | |
16899 | else | |
4d68580a | 16900 | insn = read_compressed_insn (buf, 4); |
df58fc94 RS |
16901 | |
16902 | /* Relax 32-bit branches to a sequence of instructions. */ | |
16903 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
1661c76c | 16904 | _("relaxed out-of-range branch into a jump")); |
df58fc94 | 16905 | |
2309ddf2 MR |
16906 | /* Set the short-delay-slot bit. */ |
16907 | short_ds = al && (insn & 0x02000000) != 0; | |
df58fc94 RS |
16908 | |
16909 | if (!RELAX_MICROMIPS_UNCOND (fragp->fr_subtype)) | |
16910 | { | |
16911 | symbolS *l; | |
16912 | ||
16913 | /* Reverse the branch. */ | |
16914 | if ((insn & 0xfc000000) == 0x94000000 /* beq */ | |
16915 | || (insn & 0xfc000000) == 0xb4000000) /* bne */ | |
16916 | insn ^= 0x20000000; | |
16917 | else if ((insn & 0xffe00000) == 0x40000000 /* bltz */ | |
16918 | || (insn & 0xffe00000) == 0x40400000 /* bgez */ | |
16919 | || (insn & 0xffe00000) == 0x40800000 /* blez */ | |
16920 | || (insn & 0xffe00000) == 0x40c00000 /* bgtz */ | |
16921 | || (insn & 0xffe00000) == 0x40a00000 /* bnezc */ | |
16922 | || (insn & 0xffe00000) == 0x40e00000 /* beqzc */ | |
16923 | || (insn & 0xffe00000) == 0x40200000 /* bltzal */ | |
16924 | || (insn & 0xffe00000) == 0x40600000 /* bgezal */ | |
16925 | || (insn & 0xffe00000) == 0x42200000 /* bltzals */ | |
16926 | || (insn & 0xffe00000) == 0x42600000) /* bgezals */ | |
16927 | insn ^= 0x00400000; | |
16928 | else if ((insn & 0xffe30000) == 0x43800000 /* bc1f */ | |
16929 | || (insn & 0xffe30000) == 0x43a00000 /* bc1t */ | |
16930 | || (insn & 0xffe30000) == 0x42800000 /* bc2f */ | |
16931 | || (insn & 0xffe30000) == 0x42a00000) /* bc2t */ | |
16932 | insn ^= 0x00200000; | |
56d438b1 CF |
16933 | else if ((insn & 0xff000000) == 0x83000000 /* BZ.df |
16934 | BNZ.df */ | |
16935 | || (insn & 0xff600000) == 0x81600000) /* BZ.V | |
16936 | BNZ.V */ | |
16937 | insn ^= 0x00800000; | |
df58fc94 RS |
16938 | else |
16939 | abort (); | |
16940 | ||
16941 | if (al) | |
16942 | { | |
16943 | /* Clear the and-link and short-delay-slot bits. */ | |
16944 | gas_assert ((insn & 0xfda00000) == 0x40200000); | |
16945 | ||
16946 | /* bltzal 0x40200000 bgezal 0x40600000 */ | |
16947 | /* bltzals 0x42200000 bgezals 0x42600000 */ | |
16948 | insn &= ~0x02200000; | |
16949 | } | |
16950 | ||
16951 | /* Make a label at the end for use with the branch. */ | |
16952 | l = symbol_new (micromips_label_name (), asec, fragp->fr_fix, fragp); | |
16953 | micromips_label_inc (); | |
f3ded42a | 16954 | S_SET_OTHER (l, ELF_ST_SET_MICROMIPS (S_GET_OTHER (l))); |
df58fc94 RS |
16955 | |
16956 | /* Refer to it. */ | |
4d68580a RS |
16957 | fixp = fix_new (fragp, buf - fragp->fr_literal, 4, l, 0, TRUE, |
16958 | BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
df58fc94 RS |
16959 | fixp->fx_file = fragp->fr_file; |
16960 | fixp->fx_line = fragp->fr_line; | |
16961 | ||
16962 | /* Branch over the jump. */ | |
4d68580a | 16963 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 | 16964 | if (!compact) |
4d68580a RS |
16965 | /* nop */ |
16966 | buf = write_compressed_insn (buf, 0x0c00, 2); | |
df58fc94 RS |
16967 | } |
16968 | ||
16969 | if (mips_pic == NO_PIC) | |
16970 | { | |
2309ddf2 MR |
16971 | unsigned long jal = short_ds ? 0x74000000 : 0xf4000000; /* jal/s */ |
16972 | ||
df58fc94 RS |
16973 | /* j/jal/jals <sym> R_MICROMIPS_26_S1 */ |
16974 | insn = al ? jal : 0xd4000000; | |
16975 | ||
4d68580a RS |
16976 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
16977 | BFD_RELOC_MICROMIPS_JMP); | |
df58fc94 RS |
16978 | fixp->fx_file = fragp->fr_file; |
16979 | fixp->fx_line = fragp->fr_line; | |
16980 | ||
4d68580a | 16981 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 | 16982 | if (compact) |
4d68580a RS |
16983 | /* nop */ |
16984 | buf = write_compressed_insn (buf, 0x0c00, 2); | |
df58fc94 RS |
16985 | } |
16986 | else | |
16987 | { | |
16988 | unsigned long at = RELAX_MICROMIPS_AT (fragp->fr_subtype); | |
2309ddf2 MR |
16989 | unsigned long jalr = short_ds ? 0x45e0 : 0x45c0; /* jalr/s */ |
16990 | unsigned long jr = compact ? 0x45a0 : 0x4580; /* jr/c */ | |
df58fc94 RS |
16991 | |
16992 | /* lw/ld $at, <sym>($gp) R_MICROMIPS_GOT16 */ | |
16993 | insn = HAVE_64BIT_ADDRESSES ? 0xdc1c0000 : 0xfc1c0000; | |
16994 | insn |= at << MICROMIPSOP_SH_RT; | |
16995 | ||
16996 | if (exp.X_add_number) | |
16997 | { | |
16998 | exp.X_add_symbol = make_expr_symbol (&exp); | |
16999 | exp.X_add_number = 0; | |
17000 | } | |
17001 | ||
4d68580a RS |
17002 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
17003 | BFD_RELOC_MICROMIPS_GOT16); | |
df58fc94 RS |
17004 | fixp->fx_file = fragp->fr_file; |
17005 | fixp->fx_line = fragp->fr_line; | |
17006 | ||
4d68580a | 17007 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 RS |
17008 | |
17009 | /* d/addiu $at, $at, <sym> R_MICROMIPS_LO16 */ | |
17010 | insn = HAVE_64BIT_ADDRESSES ? 0x5c000000 : 0x30000000; | |
17011 | insn |= at << MICROMIPSOP_SH_RT | at << MICROMIPSOP_SH_RS; | |
17012 | ||
4d68580a RS |
17013 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
17014 | BFD_RELOC_MICROMIPS_LO16); | |
df58fc94 RS |
17015 | fixp->fx_file = fragp->fr_file; |
17016 | fixp->fx_line = fragp->fr_line; | |
17017 | ||
4d68580a | 17018 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 RS |
17019 | |
17020 | /* jr/jrc/jalr/jalrs $at */ | |
17021 | insn = al ? jalr : jr; | |
17022 | insn |= at << MICROMIPSOP_SH_MJ; | |
17023 | ||
4d68580a | 17024 | buf = write_compressed_insn (buf, insn, 2); |
df58fc94 RS |
17025 | } |
17026 | ||
4d68580a | 17027 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); |
df58fc94 RS |
17028 | return; |
17029 | } | |
17030 | ||
252b5132 RH |
17031 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
17032 | { | |
17033 | int type; | |
3ccad066 | 17034 | const struct mips_int_operand *operand; |
252b5132 | 17035 | offsetT val; |
5c04167a RS |
17036 | char *buf; |
17037 | unsigned int user_length, length; | |
252b5132 | 17038 | unsigned long insn; |
5c04167a | 17039 | bfd_boolean ext; |
252b5132 RH |
17040 | |
17041 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
3ccad066 | 17042 | operand = mips16_immed_operand (type, FALSE); |
252b5132 | 17043 | |
5c04167a | 17044 | ext = RELAX_MIPS16_EXTENDED (fragp->fr_subtype); |
5f5f22c0 | 17045 | val = resolve_symbol_value (fragp->fr_symbol); |
3ccad066 | 17046 | if (operand->root.type == OP_PCREL) |
252b5132 | 17047 | { |
3ccad066 | 17048 | const struct mips_pcrel_operand *pcrel_op; |
252b5132 RH |
17049 | addressT addr; |
17050 | ||
3ccad066 | 17051 | pcrel_op = (const struct mips_pcrel_operand *) operand; |
252b5132 RH |
17052 | addr = fragp->fr_address + fragp->fr_fix; |
17053 | ||
17054 | /* The rules for the base address of a PC relative reloc are | |
17055 | complicated; see mips16_extended_frag. */ | |
3ccad066 | 17056 | if (pcrel_op->include_isa_bit) |
252b5132 RH |
17057 | { |
17058 | addr += 2; | |
17059 | if (ext) | |
17060 | addr += 2; | |
17061 | /* Ignore the low bit in the target, since it will be | |
17062 | set for a text label. */ | |
3ccad066 | 17063 | val &= -2; |
252b5132 RH |
17064 | } |
17065 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
17066 | addr -= 4; | |
17067 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
17068 | addr -= 2; | |
17069 | ||
3ccad066 | 17070 | addr &= -(1 << pcrel_op->align_log2); |
252b5132 RH |
17071 | val -= addr; |
17072 | ||
17073 | /* Make sure the section winds up with the alignment we have | |
17074 | assumed. */ | |
3ccad066 RS |
17075 | if (operand->shift > 0) |
17076 | record_alignment (asec, operand->shift); | |
252b5132 RH |
17077 | } |
17078 | ||
17079 | if (ext | |
17080 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
17081 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
17082 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
17083 | _("extended instruction in delay slot")); | |
17084 | ||
5c04167a | 17085 | buf = fragp->fr_literal + fragp->fr_fix; |
252b5132 | 17086 | |
4d68580a | 17087 | insn = read_compressed_insn (buf, 2); |
5c04167a RS |
17088 | if (ext) |
17089 | insn |= MIPS16_EXTEND; | |
252b5132 | 17090 | |
5c04167a RS |
17091 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) |
17092 | user_length = 4; | |
17093 | else if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
17094 | user_length = 2; | |
17095 | else | |
17096 | user_length = 0; | |
17097 | ||
43c0598f | 17098 | mips16_immed (fragp->fr_file, fragp->fr_line, type, |
c150d1d2 | 17099 | BFD_RELOC_UNUSED, val, user_length, &insn); |
252b5132 | 17100 | |
5c04167a RS |
17101 | length = (ext ? 4 : 2); |
17102 | gas_assert (mips16_opcode_length (insn) == length); | |
17103 | write_compressed_insn (buf, insn, length); | |
17104 | fragp->fr_fix += length; | |
252b5132 RH |
17105 | } |
17106 | else | |
17107 | { | |
df58fc94 RS |
17108 | relax_substateT subtype = fragp->fr_subtype; |
17109 | bfd_boolean second_longer = (subtype & RELAX_SECOND_LONGER) != 0; | |
17110 | bfd_boolean use_second = (subtype & RELAX_USE_SECOND) != 0; | |
4d7206a2 RS |
17111 | int first, second; |
17112 | fixS *fixp; | |
252b5132 | 17113 | |
df58fc94 RS |
17114 | first = RELAX_FIRST (subtype); |
17115 | second = RELAX_SECOND (subtype); | |
4d7206a2 | 17116 | fixp = (fixS *) fragp->fr_opcode; |
252b5132 | 17117 | |
df58fc94 RS |
17118 | /* If the delay slot chosen does not match the size of the instruction, |
17119 | then emit a warning. */ | |
17120 | if ((!use_second && (subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0) | |
17121 | || (use_second && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0)) | |
17122 | { | |
17123 | relax_substateT s; | |
17124 | const char *msg; | |
17125 | ||
17126 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
17127 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
17128 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
17129 | msg = macro_warning (s); | |
17130 | if (msg != NULL) | |
db9b2be4 | 17131 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 RS |
17132 | subtype &= ~s; |
17133 | } | |
17134 | ||
584892a6 | 17135 | /* Possibly emit a warning if we've chosen the longer option. */ |
df58fc94 | 17136 | if (use_second == second_longer) |
584892a6 | 17137 | { |
df58fc94 RS |
17138 | relax_substateT s; |
17139 | const char *msg; | |
17140 | ||
17141 | s = (subtype | |
17142 | & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT)); | |
17143 | msg = macro_warning (s); | |
17144 | if (msg != NULL) | |
db9b2be4 | 17145 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 | 17146 | subtype &= ~s; |
584892a6 RS |
17147 | } |
17148 | ||
4d7206a2 RS |
17149 | /* Go through all the fixups for the first sequence. Disable them |
17150 | (by marking them as done) if we're going to use the second | |
17151 | sequence instead. */ | |
17152 | while (fixp | |
17153 | && fixp->fx_frag == fragp | |
17154 | && fixp->fx_where < fragp->fr_fix - second) | |
17155 | { | |
df58fc94 | 17156 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
17157 | fixp->fx_done = 1; |
17158 | fixp = fixp->fx_next; | |
17159 | } | |
252b5132 | 17160 | |
4d7206a2 RS |
17161 | /* Go through the fixups for the second sequence. Disable them if |
17162 | we're going to use the first sequence, otherwise adjust their | |
17163 | addresses to account for the relaxation. */ | |
17164 | while (fixp && fixp->fx_frag == fragp) | |
17165 | { | |
df58fc94 | 17166 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
17167 | fixp->fx_where -= first; |
17168 | else | |
17169 | fixp->fx_done = 1; | |
17170 | fixp = fixp->fx_next; | |
17171 | } | |
17172 | ||
17173 | /* Now modify the frag contents. */ | |
df58fc94 | 17174 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
17175 | { |
17176 | char *start; | |
17177 | ||
17178 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
17179 | memmove (start, start + first, second); | |
17180 | fragp->fr_fix -= first; | |
17181 | } | |
17182 | else | |
17183 | fragp->fr_fix -= second; | |
252b5132 RH |
17184 | } |
17185 | } | |
17186 | ||
252b5132 RH |
17187 | /* This function is called after the relocs have been generated. |
17188 | We've been storing mips16 text labels as odd. Here we convert them | |
17189 | back to even for the convenience of the debugger. */ | |
17190 | ||
17191 | void | |
17a2f251 | 17192 | mips_frob_file_after_relocs (void) |
252b5132 RH |
17193 | { |
17194 | asymbol **syms; | |
17195 | unsigned int count, i; | |
17196 | ||
252b5132 RH |
17197 | syms = bfd_get_outsymbols (stdoutput); |
17198 | count = bfd_get_symcount (stdoutput); | |
17199 | for (i = 0; i < count; i++, syms++) | |
df58fc94 RS |
17200 | if (ELF_ST_IS_COMPRESSED (elf_symbol (*syms)->internal_elf_sym.st_other) |
17201 | && ((*syms)->value & 1) != 0) | |
17202 | { | |
17203 | (*syms)->value &= ~1; | |
17204 | /* If the symbol has an odd size, it was probably computed | |
17205 | incorrectly, so adjust that as well. */ | |
17206 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
17207 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
17208 | } | |
252b5132 RH |
17209 | } |
17210 | ||
a1facbec MR |
17211 | /* This function is called whenever a label is defined, including fake |
17212 | labels instantiated off the dot special symbol. It is used when | |
17213 | handling branch delays; if a branch has a label, we assume we cannot | |
17214 | move it. This also bumps the value of the symbol by 1 in compressed | |
17215 | code. */ | |
252b5132 | 17216 | |
e1b47bd5 | 17217 | static void |
a1facbec | 17218 | mips_record_label (symbolS *sym) |
252b5132 | 17219 | { |
a8dbcb85 | 17220 | segment_info_type *si = seg_info (now_seg); |
252b5132 RH |
17221 | struct insn_label_list *l; |
17222 | ||
17223 | if (free_insn_labels == NULL) | |
17224 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
17225 | else | |
17226 | { | |
17227 | l = free_insn_labels; | |
17228 | free_insn_labels = l->next; | |
17229 | } | |
17230 | ||
17231 | l->label = sym; | |
a8dbcb85 TS |
17232 | l->next = si->label_list; |
17233 | si->label_list = l; | |
a1facbec | 17234 | } |
07a53e5c | 17235 | |
a1facbec MR |
17236 | /* This function is called as tc_frob_label() whenever a label is defined |
17237 | and adds a DWARF-2 record we only want for true labels. */ | |
17238 | ||
17239 | void | |
17240 | mips_define_label (symbolS *sym) | |
17241 | { | |
17242 | mips_record_label (sym); | |
07a53e5c | 17243 | dwarf2_emit_label (sym); |
252b5132 | 17244 | } |
e1b47bd5 RS |
17245 | |
17246 | /* This function is called by tc_new_dot_label whenever a new dot symbol | |
17247 | is defined. */ | |
17248 | ||
17249 | void | |
17250 | mips_add_dot_label (symbolS *sym) | |
17251 | { | |
17252 | mips_record_label (sym); | |
17253 | if (mips_assembling_insn && HAVE_CODE_COMPRESSION) | |
17254 | mips_compressed_mark_label (sym); | |
17255 | } | |
252b5132 | 17256 | \f |
252b5132 RH |
17257 | /* Some special processing for a MIPS ELF file. */ |
17258 | ||
17259 | void | |
17a2f251 | 17260 | mips_elf_final_processing (void) |
252b5132 RH |
17261 | { |
17262 | /* Write out the register information. */ | |
316f5878 | 17263 | if (mips_abi != N64_ABI) |
252b5132 RH |
17264 | { |
17265 | Elf32_RegInfo s; | |
17266 | ||
17267 | s.ri_gprmask = mips_gprmask; | |
17268 | s.ri_cprmask[0] = mips_cprmask[0]; | |
17269 | s.ri_cprmask[1] = mips_cprmask[1]; | |
17270 | s.ri_cprmask[2] = mips_cprmask[2]; | |
17271 | s.ri_cprmask[3] = mips_cprmask[3]; | |
17272 | /* The gp_value field is set by the MIPS ELF backend. */ | |
17273 | ||
17274 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
17275 | ((Elf32_External_RegInfo *) | |
17276 | mips_regmask_frag)); | |
17277 | } | |
17278 | else | |
17279 | { | |
17280 | Elf64_Internal_RegInfo s; | |
17281 | ||
17282 | s.ri_gprmask = mips_gprmask; | |
17283 | s.ri_pad = 0; | |
17284 | s.ri_cprmask[0] = mips_cprmask[0]; | |
17285 | s.ri_cprmask[1] = mips_cprmask[1]; | |
17286 | s.ri_cprmask[2] = mips_cprmask[2]; | |
17287 | s.ri_cprmask[3] = mips_cprmask[3]; | |
17288 | /* The gp_value field is set by the MIPS ELF backend. */ | |
17289 | ||
17290 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
17291 | ((Elf64_External_RegInfo *) | |
17292 | mips_regmask_frag)); | |
17293 | } | |
17294 | ||
17295 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
17296 | sort of BFD interface for this. */ | |
17297 | if (mips_any_noreorder) | |
17298 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
17299 | if (mips_pic != NO_PIC) | |
143d77c5 | 17300 | { |
8b828383 | 17301 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
17302 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
17303 | } | |
17304 | if (mips_abicalls) | |
17305 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 17306 | |
b015e599 AP |
17307 | /* Set MIPS ELF flags for ASEs. Note that not all ASEs have flags |
17308 | defined at present; this might need to change in future. */ | |
a4672219 TS |
17309 | if (file_ase_mips16) |
17310 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
df58fc94 RS |
17311 | if (file_ase_micromips) |
17312 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MICROMIPS; | |
846ef2d0 | 17313 | if (file_ase & ASE_MDMX) |
deec1734 | 17314 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; |
1f25f5d3 | 17315 | |
bdaaa2e1 | 17316 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 17317 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 17318 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 17319 | else if (mips_abi == O64_ABI) |
252b5132 | 17320 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 17321 | else if (mips_abi == EABI_ABI) |
252b5132 | 17322 | { |
316f5878 | 17323 | if (!file_mips_gp32) |
252b5132 RH |
17324 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
17325 | else | |
17326 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
17327 | } | |
316f5878 | 17328 | else if (mips_abi == N32_ABI) |
be00bddd TS |
17329 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
17330 | ||
c9914766 | 17331 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
17332 | |
17333 | if (mips_32bitmode) | |
17334 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 | 17335 | |
ba92f887 MR |
17336 | if (mips_flag_nan2008) |
17337 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NAN2008; | |
17338 | ||
ad3fea08 TS |
17339 | /* 32 bit code with 64 bit FP registers. */ |
17340 | if (!file_mips_fp32 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
f1c38003 | 17341 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_FP64; |
252b5132 | 17342 | } |
252b5132 | 17343 | \f |
beae10d5 | 17344 | typedef struct proc { |
9b2f1d35 EC |
17345 | symbolS *func_sym; |
17346 | symbolS *func_end_sym; | |
beae10d5 KH |
17347 | unsigned long reg_mask; |
17348 | unsigned long reg_offset; | |
17349 | unsigned long fpreg_mask; | |
17350 | unsigned long fpreg_offset; | |
17351 | unsigned long frame_offset; | |
17352 | unsigned long frame_reg; | |
17353 | unsigned long pc_reg; | |
17354 | } procS; | |
252b5132 RH |
17355 | |
17356 | static procS cur_proc; | |
17357 | static procS *cur_proc_ptr; | |
17358 | static int numprocs; | |
17359 | ||
df58fc94 RS |
17360 | /* Implement NOP_OPCODE. We encode a MIPS16 nop as "1", a microMIPS nop |
17361 | as "2", and a normal nop as "0". */ | |
17362 | ||
17363 | #define NOP_OPCODE_MIPS 0 | |
17364 | #define NOP_OPCODE_MIPS16 1 | |
17365 | #define NOP_OPCODE_MICROMIPS 2 | |
742a56fe RS |
17366 | |
17367 | char | |
17368 | mips_nop_opcode (void) | |
17369 | { | |
df58fc94 RS |
17370 | if (seg_info (now_seg)->tc_segment_info_data.micromips) |
17371 | return NOP_OPCODE_MICROMIPS; | |
17372 | else if (seg_info (now_seg)->tc_segment_info_data.mips16) | |
17373 | return NOP_OPCODE_MIPS16; | |
17374 | else | |
17375 | return NOP_OPCODE_MIPS; | |
742a56fe RS |
17376 | } |
17377 | ||
df58fc94 RS |
17378 | /* Fill in an rs_align_code fragment. Unlike elsewhere we want to use |
17379 | 32-bit microMIPS NOPs here (if applicable). */ | |
a19d8eb0 | 17380 | |
0a9ef439 | 17381 | void |
17a2f251 | 17382 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 17383 | { |
df58fc94 | 17384 | char nop_opcode; |
742a56fe | 17385 | char *p; |
c67a084a NC |
17386 | int bytes, size, excess; |
17387 | valueT opcode; | |
742a56fe | 17388 | |
0a9ef439 RH |
17389 | if (fragp->fr_type != rs_align_code) |
17390 | return; | |
17391 | ||
742a56fe | 17392 | p = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
17393 | nop_opcode = *p; |
17394 | switch (nop_opcode) | |
a19d8eb0 | 17395 | { |
df58fc94 RS |
17396 | case NOP_OPCODE_MICROMIPS: |
17397 | opcode = micromips_nop32_insn.insn_opcode; | |
17398 | size = 4; | |
17399 | break; | |
17400 | case NOP_OPCODE_MIPS16: | |
c67a084a NC |
17401 | opcode = mips16_nop_insn.insn_opcode; |
17402 | size = 2; | |
df58fc94 RS |
17403 | break; |
17404 | case NOP_OPCODE_MIPS: | |
17405 | default: | |
c67a084a NC |
17406 | opcode = nop_insn.insn_opcode; |
17407 | size = 4; | |
df58fc94 | 17408 | break; |
c67a084a | 17409 | } |
a19d8eb0 | 17410 | |
c67a084a NC |
17411 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
17412 | excess = bytes % size; | |
df58fc94 RS |
17413 | |
17414 | /* Handle the leading part if we're not inserting a whole number of | |
17415 | instructions, and make it the end of the fixed part of the frag. | |
17416 | Try to fit in a short microMIPS NOP if applicable and possible, | |
17417 | and use zeroes otherwise. */ | |
17418 | gas_assert (excess < 4); | |
17419 | fragp->fr_fix += excess; | |
17420 | switch (excess) | |
c67a084a | 17421 | { |
df58fc94 RS |
17422 | case 3: |
17423 | *p++ = '\0'; | |
17424 | /* Fall through. */ | |
17425 | case 2: | |
833794fc | 17426 | if (nop_opcode == NOP_OPCODE_MICROMIPS && !mips_opts.insn32) |
df58fc94 | 17427 | { |
4d68580a | 17428 | p = write_compressed_insn (p, micromips_nop16_insn.insn_opcode, 2); |
df58fc94 RS |
17429 | break; |
17430 | } | |
17431 | *p++ = '\0'; | |
17432 | /* Fall through. */ | |
17433 | case 1: | |
17434 | *p++ = '\0'; | |
17435 | /* Fall through. */ | |
17436 | case 0: | |
17437 | break; | |
a19d8eb0 | 17438 | } |
c67a084a NC |
17439 | |
17440 | md_number_to_chars (p, opcode, size); | |
17441 | fragp->fr_var = size; | |
a19d8eb0 CP |
17442 | } |
17443 | ||
252b5132 | 17444 | static void |
17a2f251 | 17445 | md_obj_begin (void) |
252b5132 RH |
17446 | { |
17447 | } | |
17448 | ||
17449 | static void | |
17a2f251 | 17450 | md_obj_end (void) |
252b5132 | 17451 | { |
54f4ddb3 | 17452 | /* Check for premature end, nesting errors, etc. */ |
252b5132 | 17453 | if (cur_proc_ptr) |
9a41af64 | 17454 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
17455 | } |
17456 | ||
17457 | static long | |
17a2f251 | 17458 | get_number (void) |
252b5132 RH |
17459 | { |
17460 | int negative = 0; | |
17461 | long val = 0; | |
17462 | ||
17463 | if (*input_line_pointer == '-') | |
17464 | { | |
17465 | ++input_line_pointer; | |
17466 | negative = 1; | |
17467 | } | |
3882b010 | 17468 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 17469 | as_bad (_("expected simple number")); |
252b5132 RH |
17470 | if (input_line_pointer[0] == '0') |
17471 | { | |
17472 | if (input_line_pointer[1] == 'x') | |
17473 | { | |
17474 | input_line_pointer += 2; | |
3882b010 | 17475 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
17476 | { |
17477 | val <<= 4; | |
17478 | val |= hex_value (*input_line_pointer++); | |
17479 | } | |
17480 | return negative ? -val : val; | |
17481 | } | |
17482 | else | |
17483 | { | |
17484 | ++input_line_pointer; | |
3882b010 | 17485 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
17486 | { |
17487 | val <<= 3; | |
17488 | val |= *input_line_pointer++ - '0'; | |
17489 | } | |
17490 | return negative ? -val : val; | |
17491 | } | |
17492 | } | |
3882b010 | 17493 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
17494 | { |
17495 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
17496 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 17497 | as_warn (_("invalid number")); |
252b5132 RH |
17498 | return -1; |
17499 | } | |
3882b010 | 17500 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
17501 | { |
17502 | val *= 10; | |
17503 | val += *input_line_pointer++ - '0'; | |
17504 | } | |
17505 | return negative ? -val : val; | |
17506 | } | |
17507 | ||
17508 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
17509 | is an initial number which is the ECOFF file index. In the non-ECOFF |
17510 | case .file implies DWARF-2. */ | |
17511 | ||
17512 | static void | |
17a2f251 | 17513 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 17514 | { |
ecb4347a DJ |
17515 | static int first_file_directive = 0; |
17516 | ||
c5dd6aab DJ |
17517 | if (ECOFF_DEBUGGING) |
17518 | { | |
17519 | get_number (); | |
17520 | s_app_file (0); | |
17521 | } | |
17522 | else | |
ecb4347a DJ |
17523 | { |
17524 | char *filename; | |
17525 | ||
17526 | filename = dwarf2_directive_file (0); | |
17527 | ||
17528 | /* Versions of GCC up to 3.1 start files with a ".file" | |
17529 | directive even for stabs output. Make sure that this | |
17530 | ".file" is handled. Note that you need a version of GCC | |
17531 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
17532 | if (filename != NULL && ! first_file_directive) | |
17533 | { | |
17534 | (void) new_logical_line (filename, -1); | |
c04f5787 | 17535 | s_app_file_string (filename, 0); |
ecb4347a DJ |
17536 | } |
17537 | first_file_directive = 1; | |
17538 | } | |
c5dd6aab DJ |
17539 | } |
17540 | ||
17541 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
17542 | |
17543 | static void | |
17a2f251 | 17544 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 17545 | { |
c5dd6aab DJ |
17546 | if (!ECOFF_DEBUGGING) |
17547 | dwarf2_directive_loc (0); | |
252b5132 RH |
17548 | } |
17549 | ||
252b5132 RH |
17550 | /* The .end directive. */ |
17551 | ||
17552 | static void | |
17a2f251 | 17553 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
17554 | { |
17555 | symbolS *p; | |
252b5132 | 17556 | |
7a621144 DJ |
17557 | /* Following functions need their own .frame and .cprestore directives. */ |
17558 | mips_frame_reg_valid = 0; | |
17559 | mips_cprestore_valid = 0; | |
17560 | ||
252b5132 RH |
17561 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
17562 | { | |
17563 | p = get_symbol (); | |
17564 | demand_empty_rest_of_line (); | |
17565 | } | |
17566 | else | |
17567 | p = NULL; | |
17568 | ||
14949570 | 17569 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
17570 | as_warn (_(".end not in text section")); |
17571 | ||
17572 | if (!cur_proc_ptr) | |
17573 | { | |
1661c76c | 17574 | as_warn (_(".end directive without a preceding .ent directive")); |
252b5132 RH |
17575 | demand_empty_rest_of_line (); |
17576 | return; | |
17577 | } | |
17578 | ||
17579 | if (p != NULL) | |
17580 | { | |
9c2799c2 | 17581 | gas_assert (S_GET_NAME (p)); |
9b2f1d35 | 17582 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
1661c76c | 17583 | as_warn (_(".end symbol does not match .ent symbol")); |
ecb4347a DJ |
17584 | |
17585 | if (debug_type == DEBUG_STABS) | |
17586 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
17587 | S_GET_NAME (p)); | |
252b5132 RH |
17588 | } |
17589 | else | |
17590 | as_warn (_(".end directive missing or unknown symbol")); | |
17591 | ||
9b2f1d35 EC |
17592 | /* Create an expression to calculate the size of the function. */ |
17593 | if (p && cur_proc_ptr) | |
17594 | { | |
17595 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
17596 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
17597 | ||
17598 | obj->size = exp; | |
17599 | exp->X_op = O_subtract; | |
17600 | exp->X_add_symbol = symbol_temp_new_now (); | |
17601 | exp->X_op_symbol = p; | |
17602 | exp->X_add_number = 0; | |
17603 | ||
17604 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
17605 | } | |
17606 | ||
ecb4347a | 17607 | /* Generate a .pdr section. */ |
f3ded42a | 17608 | if (!ECOFF_DEBUGGING && mips_flag_pdr) |
ecb4347a DJ |
17609 | { |
17610 | segT saved_seg = now_seg; | |
17611 | subsegT saved_subseg = now_subseg; | |
ecb4347a DJ |
17612 | expressionS exp; |
17613 | char *fragp; | |
252b5132 | 17614 | |
252b5132 | 17615 | #ifdef md_flush_pending_output |
ecb4347a | 17616 | md_flush_pending_output (); |
252b5132 RH |
17617 | #endif |
17618 | ||
9c2799c2 | 17619 | gas_assert (pdr_seg); |
ecb4347a | 17620 | subseg_set (pdr_seg, 0); |
252b5132 | 17621 | |
ecb4347a DJ |
17622 | /* Write the symbol. */ |
17623 | exp.X_op = O_symbol; | |
17624 | exp.X_add_symbol = p; | |
17625 | exp.X_add_number = 0; | |
17626 | emit_expr (&exp, 4); | |
252b5132 | 17627 | |
ecb4347a | 17628 | fragp = frag_more (7 * 4); |
252b5132 | 17629 | |
17a2f251 TS |
17630 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
17631 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
17632 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
17633 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
17634 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
17635 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
17636 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 17637 | |
ecb4347a DJ |
17638 | subseg_set (saved_seg, saved_subseg); |
17639 | } | |
252b5132 RH |
17640 | |
17641 | cur_proc_ptr = NULL; | |
17642 | } | |
17643 | ||
17644 | /* The .aent and .ent directives. */ | |
17645 | ||
17646 | static void | |
17a2f251 | 17647 | s_mips_ent (int aent) |
252b5132 | 17648 | { |
252b5132 | 17649 | symbolS *symbolP; |
252b5132 RH |
17650 | |
17651 | symbolP = get_symbol (); | |
17652 | if (*input_line_pointer == ',') | |
f9419b05 | 17653 | ++input_line_pointer; |
252b5132 | 17654 | SKIP_WHITESPACE (); |
3882b010 | 17655 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 17656 | || *input_line_pointer == '-') |
874e8986 | 17657 | get_number (); |
252b5132 | 17658 | |
14949570 | 17659 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
1661c76c | 17660 | as_warn (_(".ent or .aent not in text section")); |
252b5132 RH |
17661 | |
17662 | if (!aent && cur_proc_ptr) | |
9a41af64 | 17663 | as_warn (_("missing .end")); |
252b5132 RH |
17664 | |
17665 | if (!aent) | |
17666 | { | |
7a621144 DJ |
17667 | /* This function needs its own .frame and .cprestore directives. */ |
17668 | mips_frame_reg_valid = 0; | |
17669 | mips_cprestore_valid = 0; | |
17670 | ||
252b5132 RH |
17671 | cur_proc_ptr = &cur_proc; |
17672 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
17673 | ||
9b2f1d35 | 17674 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 17675 | |
f9419b05 | 17676 | ++numprocs; |
ecb4347a DJ |
17677 | |
17678 | if (debug_type == DEBUG_STABS) | |
17679 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
17680 | S_GET_NAME (symbolP)); | |
252b5132 RH |
17681 | } |
17682 | ||
7c0fc524 MR |
17683 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
17684 | ||
252b5132 RH |
17685 | demand_empty_rest_of_line (); |
17686 | } | |
17687 | ||
17688 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 17689 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 17690 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 17691 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
17692 | symbol table (in the mdebug section). */ |
17693 | ||
17694 | static void | |
17a2f251 | 17695 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 17696 | { |
f3ded42a RS |
17697 | if (ECOFF_DEBUGGING) |
17698 | s_ignore (ignore); | |
17699 | else | |
ecb4347a DJ |
17700 | { |
17701 | long val; | |
252b5132 | 17702 | |
ecb4347a DJ |
17703 | if (cur_proc_ptr == (procS *) NULL) |
17704 | { | |
17705 | as_warn (_(".frame outside of .ent")); | |
17706 | demand_empty_rest_of_line (); | |
17707 | return; | |
17708 | } | |
252b5132 | 17709 | |
ecb4347a DJ |
17710 | cur_proc_ptr->frame_reg = tc_get_register (1); |
17711 | ||
17712 | SKIP_WHITESPACE (); | |
17713 | if (*input_line_pointer++ != ',' | |
17714 | || get_absolute_expression_and_terminator (&val) != ',') | |
17715 | { | |
1661c76c | 17716 | as_warn (_("bad .frame directive")); |
ecb4347a DJ |
17717 | --input_line_pointer; |
17718 | demand_empty_rest_of_line (); | |
17719 | return; | |
17720 | } | |
252b5132 | 17721 | |
ecb4347a DJ |
17722 | cur_proc_ptr->frame_offset = val; |
17723 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 17724 | |
252b5132 | 17725 | demand_empty_rest_of_line (); |
252b5132 | 17726 | } |
252b5132 RH |
17727 | } |
17728 | ||
bdaaa2e1 KH |
17729 | /* The .fmask and .mask directives. If the mdebug section is present |
17730 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 17731 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 17732 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
17733 | make reference to the ecoff symbol table (in the mdebug section). */ |
17734 | ||
17735 | static void | |
17a2f251 | 17736 | s_mips_mask (int reg_type) |
252b5132 | 17737 | { |
f3ded42a RS |
17738 | if (ECOFF_DEBUGGING) |
17739 | s_ignore (reg_type); | |
17740 | else | |
252b5132 | 17741 | { |
ecb4347a | 17742 | long mask, off; |
252b5132 | 17743 | |
ecb4347a DJ |
17744 | if (cur_proc_ptr == (procS *) NULL) |
17745 | { | |
17746 | as_warn (_(".mask/.fmask outside of .ent")); | |
17747 | demand_empty_rest_of_line (); | |
17748 | return; | |
17749 | } | |
252b5132 | 17750 | |
ecb4347a DJ |
17751 | if (get_absolute_expression_and_terminator (&mask) != ',') |
17752 | { | |
1661c76c | 17753 | as_warn (_("bad .mask/.fmask directive")); |
ecb4347a DJ |
17754 | --input_line_pointer; |
17755 | demand_empty_rest_of_line (); | |
17756 | return; | |
17757 | } | |
252b5132 | 17758 | |
ecb4347a DJ |
17759 | off = get_absolute_expression (); |
17760 | ||
17761 | if (reg_type == 'F') | |
17762 | { | |
17763 | cur_proc_ptr->fpreg_mask = mask; | |
17764 | cur_proc_ptr->fpreg_offset = off; | |
17765 | } | |
17766 | else | |
17767 | { | |
17768 | cur_proc_ptr->reg_mask = mask; | |
17769 | cur_proc_ptr->reg_offset = off; | |
17770 | } | |
17771 | ||
17772 | demand_empty_rest_of_line (); | |
252b5132 | 17773 | } |
252b5132 RH |
17774 | } |
17775 | ||
316f5878 RS |
17776 | /* A table describing all the processors gas knows about. Names are |
17777 | matched in the order listed. | |
e7af610e | 17778 | |
316f5878 RS |
17779 | To ease comparison, please keep this table in the same order as |
17780 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
17781 | static const struct mips_cpu_info mips_cpu_info_table[] = |
17782 | { | |
316f5878 | 17783 | /* Entries for generic ISAs */ |
d16afab6 RS |
17784 | { "mips1", MIPS_CPU_IS_ISA, 0, ISA_MIPS1, CPU_R3000 }, |
17785 | { "mips2", MIPS_CPU_IS_ISA, 0, ISA_MIPS2, CPU_R6000 }, | |
17786 | { "mips3", MIPS_CPU_IS_ISA, 0, ISA_MIPS3, CPU_R4000 }, | |
17787 | { "mips4", MIPS_CPU_IS_ISA, 0, ISA_MIPS4, CPU_R8000 }, | |
17788 | { "mips5", MIPS_CPU_IS_ISA, 0, ISA_MIPS5, CPU_MIPS5 }, | |
17789 | { "mips32", MIPS_CPU_IS_ISA, 0, ISA_MIPS32, CPU_MIPS32 }, | |
17790 | { "mips32r2", MIPS_CPU_IS_ISA, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17791 | { "mips64", MIPS_CPU_IS_ISA, 0, ISA_MIPS64, CPU_MIPS64 }, | |
17792 | { "mips64r2", MIPS_CPU_IS_ISA, 0, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
316f5878 RS |
17793 | |
17794 | /* MIPS I */ | |
d16afab6 RS |
17795 | { "r3000", 0, 0, ISA_MIPS1, CPU_R3000 }, |
17796 | { "r2000", 0, 0, ISA_MIPS1, CPU_R3000 }, | |
17797 | { "r3900", 0, 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
17798 | |
17799 | /* MIPS II */ | |
d16afab6 | 17800 | { "r6000", 0, 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
17801 | |
17802 | /* MIPS III */ | |
d16afab6 RS |
17803 | { "r4000", 0, 0, ISA_MIPS3, CPU_R4000 }, |
17804 | { "r4010", 0, 0, ISA_MIPS2, CPU_R4010 }, | |
17805 | { "vr4100", 0, 0, ISA_MIPS3, CPU_VR4100 }, | |
17806 | { "vr4111", 0, 0, ISA_MIPS3, CPU_R4111 }, | |
17807 | { "vr4120", 0, 0, ISA_MIPS3, CPU_VR4120 }, | |
17808 | { "vr4130", 0, 0, ISA_MIPS3, CPU_VR4120 }, | |
17809 | { "vr4181", 0, 0, ISA_MIPS3, CPU_R4111 }, | |
17810 | { "vr4300", 0, 0, ISA_MIPS3, CPU_R4300 }, | |
17811 | { "r4400", 0, 0, ISA_MIPS3, CPU_R4400 }, | |
17812 | { "r4600", 0, 0, ISA_MIPS3, CPU_R4600 }, | |
17813 | { "orion", 0, 0, ISA_MIPS3, CPU_R4600 }, | |
17814 | { "r4650", 0, 0, ISA_MIPS3, CPU_R4650 }, | |
17815 | { "r5900", 0, 0, ISA_MIPS3, CPU_R5900 }, | |
b15591bb | 17816 | /* ST Microelectronics Loongson 2E and 2F cores */ |
d16afab6 RS |
17817 | { "loongson2e", 0, 0, ISA_MIPS3, CPU_LOONGSON_2E }, |
17818 | { "loongson2f", 0, 0, ISA_MIPS3, CPU_LOONGSON_2F }, | |
316f5878 RS |
17819 | |
17820 | /* MIPS IV */ | |
d16afab6 RS |
17821 | { "r8000", 0, 0, ISA_MIPS4, CPU_R8000 }, |
17822 | { "r10000", 0, 0, ISA_MIPS4, CPU_R10000 }, | |
17823 | { "r12000", 0, 0, ISA_MIPS4, CPU_R12000 }, | |
17824 | { "r14000", 0, 0, ISA_MIPS4, CPU_R14000 }, | |
17825 | { "r16000", 0, 0, ISA_MIPS4, CPU_R16000 }, | |
17826 | { "vr5000", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
17827 | { "vr5400", 0, 0, ISA_MIPS4, CPU_VR5400 }, | |
17828 | { "vr5500", 0, 0, ISA_MIPS4, CPU_VR5500 }, | |
17829 | { "rm5200", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
17830 | { "rm5230", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
17831 | { "rm5231", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
17832 | { "rm5261", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
17833 | { "rm5721", 0, 0, ISA_MIPS4, CPU_R5000 }, | |
17834 | { "rm7000", 0, 0, ISA_MIPS4, CPU_RM7000 }, | |
17835 | { "rm9000", 0, 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
17836 | |
17837 | /* MIPS 32 */ | |
d16afab6 RS |
17838 | { "4kc", 0, 0, ISA_MIPS32, CPU_MIPS32 }, |
17839 | { "4km", 0, 0, ISA_MIPS32, CPU_MIPS32 }, | |
17840 | { "4kp", 0, 0, ISA_MIPS32, CPU_MIPS32 }, | |
17841 | { "4ksc", 0, ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
ad3fea08 TS |
17842 | |
17843 | /* MIPS 32 Release 2 */ | |
d16afab6 RS |
17844 | { "4kec", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17845 | { "4kem", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17846 | { "4kep", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17847 | { "4ksd", 0, ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17848 | { "m4k", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17849 | { "m4kp", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17850 | { "m14k", 0, ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17851 | { "m14kc", 0, ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17852 | { "m14ke", 0, ASE_DSP | ASE_DSPR2 | ASE_MCU, | |
17853 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17854 | { "m14kec", 0, ASE_DSP | ASE_DSPR2 | ASE_MCU, | |
17855 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17856 | { "24kc", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17857 | { "24kf2_1", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17858 | { "24kf", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17859 | { "24kf1_1", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 17860 | /* Deprecated forms of the above. */ |
d16afab6 RS |
17861 | { "24kfx", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17862 | { "24kx", 0, 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f | 17863 | /* 24KE is a 24K with DSP ASE, other ASEs are optional. */ |
d16afab6 RS |
17864 | { "24kec", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17865 | { "24kef2_1", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17866 | { "24kef", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17867 | { "24kef1_1", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 17868 | /* Deprecated forms of the above. */ |
d16afab6 RS |
17869 | { "24kefx", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17870 | { "24kex", 0, ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f | 17871 | /* 34K is a 24K with DSP and MT ASE, other ASEs are optional. */ |
d16afab6 RS |
17872 | { "34kc", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17873 | { "34kf2_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17874 | { "34kf", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17875 | { "34kf1_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 17876 | /* Deprecated forms of the above. */ |
d16afab6 RS |
17877 | { "34kfx", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17878 | { "34kx", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
711eefe4 | 17879 | /* 34Kn is a 34kc without DSP. */ |
d16afab6 | 17880 | { "34kn", 0, ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 17881 | /* 74K with DSP and DSPR2 ASE, other ASEs are optional. */ |
d16afab6 RS |
17882 | { "74kc", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17883 | { "74kf2_1", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17884 | { "74kf", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17885 | { "74kf1_1", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17886 | { "74kf3_2", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 | 17887 | /* Deprecated forms of the above. */ |
d16afab6 RS |
17888 | { "74kfx", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17889 | { "74kx", 0, ASE_DSP | ASE_DSPR2, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
30f8113a | 17890 | /* 1004K cores are multiprocessor versions of the 34K. */ |
d16afab6 RS |
17891 | { "1004kc", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
17892 | { "1004kf2_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17893 | { "1004kf", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
17894 | { "1004kf1_1", 0, ASE_DSP | ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
32b26a03 | 17895 | |
316f5878 | 17896 | /* MIPS 64 */ |
d16afab6 RS |
17897 | { "5kc", 0, 0, ISA_MIPS64, CPU_MIPS64 }, |
17898 | { "5kf", 0, 0, ISA_MIPS64, CPU_MIPS64 }, | |
17899 | { "20kc", 0, ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
17900 | { "25kf", 0, ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
ad3fea08 | 17901 | |
c7a23324 | 17902 | /* Broadcom SB-1 CPU core */ |
d16afab6 | 17903 | { "sb1", 0, ASE_MIPS3D | ASE_MDMX, ISA_MIPS64, CPU_SB1 }, |
1e85aad8 | 17904 | /* Broadcom SB-1A CPU core */ |
d16afab6 | 17905 | { "sb1a", 0, ASE_MIPS3D | ASE_MDMX, ISA_MIPS64, CPU_SB1 }, |
d051516a | 17906 | |
d16afab6 | 17907 | { "loongson3a", 0, 0, ISA_MIPS64, CPU_LOONGSON_3A }, |
e7af610e | 17908 | |
ed163775 MR |
17909 | /* MIPS 64 Release 2 */ |
17910 | ||
967344c6 | 17911 | /* Cavium Networks Octeon CPU core */ |
d16afab6 RS |
17912 | { "octeon", 0, 0, ISA_MIPS64R2, CPU_OCTEON }, |
17913 | { "octeon+", 0, 0, ISA_MIPS64R2, CPU_OCTEONP }, | |
17914 | { "octeon2", 0, 0, ISA_MIPS64R2, CPU_OCTEON2 }, | |
967344c6 | 17915 | |
52b6b6b9 | 17916 | /* RMI Xlr */ |
d16afab6 | 17917 | { "xlr", 0, 0, ISA_MIPS64, CPU_XLR }, |
52b6b6b9 | 17918 | |
55a36193 MK |
17919 | /* Broadcom XLP. |
17920 | XLP is mostly like XLR, with the prominent exception that it is | |
17921 | MIPS64R2 rather than MIPS64. */ | |
d16afab6 | 17922 | { "xlp", 0, 0, ISA_MIPS64R2, CPU_XLR }, |
55a36193 | 17923 | |
316f5878 | 17924 | /* End marker */ |
d16afab6 | 17925 | { NULL, 0, 0, 0, 0 } |
316f5878 | 17926 | }; |
e7af610e | 17927 | |
84ea6cf2 | 17928 | |
316f5878 RS |
17929 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
17930 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 17931 | |
316f5878 | 17932 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 17933 | |
b34976b6 | 17934 | static bfd_boolean |
17a2f251 | 17935 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
17936 | { |
17937 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
17938 | given++, canonical++; | |
17939 | ||
17940 | return ((*given == 0 && *canonical == 0) | |
17941 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
17942 | } | |
17943 | ||
17944 | ||
17945 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
17946 | CPU name. We've traditionally allowed a lot of variation here. | |
17947 | ||
17948 | Note: this function is shared between GCC and GAS. */ | |
17949 | ||
b34976b6 | 17950 | static bfd_boolean |
17a2f251 | 17951 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
17952 | { |
17953 | /* First see if the name matches exactly, or with a final "000" | |
17954 | turned into "k". */ | |
17955 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 17956 | return TRUE; |
316f5878 RS |
17957 | |
17958 | /* If not, try comparing based on numerical designation alone. | |
17959 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
17960 | if (TOLOWER (*given) == 'r') | |
17961 | given++; | |
17962 | if (!ISDIGIT (*given)) | |
b34976b6 | 17963 | return FALSE; |
316f5878 RS |
17964 | |
17965 | /* Skip over some well-known prefixes in the canonical name, | |
17966 | hoping to find a number there too. */ | |
17967 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
17968 | canonical += 2; | |
17969 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
17970 | canonical += 2; | |
17971 | else if (TOLOWER (canonical[0]) == 'r') | |
17972 | canonical += 1; | |
17973 | ||
17974 | return mips_strict_matching_cpu_name_p (canonical, given); | |
17975 | } | |
17976 | ||
17977 | ||
17978 | /* Parse an option that takes the name of a processor as its argument. | |
17979 | OPTION is the name of the option and CPU_STRING is the argument. | |
17980 | Return the corresponding processor enumeration if the CPU_STRING is | |
17981 | recognized, otherwise report an error and return null. | |
17982 | ||
17983 | A similar function exists in GCC. */ | |
e7af610e NC |
17984 | |
17985 | static const struct mips_cpu_info * | |
17a2f251 | 17986 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 17987 | { |
316f5878 | 17988 | const struct mips_cpu_info *p; |
e7af610e | 17989 | |
316f5878 RS |
17990 | /* 'from-abi' selects the most compatible architecture for the given |
17991 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
17992 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
17993 | version. Look first at the -mgp options, if given, otherwise base | |
17994 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 17995 | |
316f5878 RS |
17996 | Treat NO_ABI like the EABIs. One reason to do this is that the |
17997 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
17998 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
17999 | 'mips64', just as we did in the days before 'from-abi'. */ | |
18000 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
18001 | { | |
18002 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
18003 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
18004 | ||
18005 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
18006 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
18007 | ||
18008 | if (file_mips_gp32 >= 0) | |
18009 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
18010 | ||
18011 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
18012 | ? ISA_MIPS3 | |
18013 | : ISA_MIPS1); | |
18014 | } | |
18015 | ||
18016 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
18017 | if (strcasecmp (cpu_string, "default") == 0) | |
18018 | return 0; | |
18019 | ||
18020 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
18021 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
18022 | return p; | |
18023 | ||
1661c76c | 18024 | as_bad (_("bad value (%s) for %s"), cpu_string, option); |
316f5878 | 18025 | return 0; |
e7af610e NC |
18026 | } |
18027 | ||
316f5878 RS |
18028 | /* Return the canonical processor information for ISA (a member of the |
18029 | ISA_MIPS* enumeration). */ | |
18030 | ||
e7af610e | 18031 | static const struct mips_cpu_info * |
17a2f251 | 18032 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
18033 | { |
18034 | int i; | |
18035 | ||
18036 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 18037 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 18038 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
18039 | return (&mips_cpu_info_table[i]); |
18040 | ||
e972090a | 18041 | return NULL; |
e7af610e | 18042 | } |
fef14a42 TS |
18043 | |
18044 | static const struct mips_cpu_info * | |
17a2f251 | 18045 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
18046 | { |
18047 | int i; | |
18048 | ||
18049 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
18050 | if (arch == mips_cpu_info_table[i].cpu) | |
18051 | return (&mips_cpu_info_table[i]); | |
18052 | ||
18053 | return NULL; | |
18054 | } | |
316f5878 RS |
18055 | \f |
18056 | static void | |
17a2f251 | 18057 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
18058 | { |
18059 | if (*first_p) | |
18060 | { | |
18061 | fprintf (stream, "%24s", ""); | |
18062 | *col_p = 24; | |
18063 | } | |
18064 | else | |
18065 | { | |
18066 | fprintf (stream, ", "); | |
18067 | *col_p += 2; | |
18068 | } | |
e7af610e | 18069 | |
316f5878 RS |
18070 | if (*col_p + strlen (string) > 72) |
18071 | { | |
18072 | fprintf (stream, "\n%24s", ""); | |
18073 | *col_p = 24; | |
18074 | } | |
18075 | ||
18076 | fprintf (stream, "%s", string); | |
18077 | *col_p += strlen (string); | |
18078 | ||
18079 | *first_p = 0; | |
18080 | } | |
18081 | ||
18082 | void | |
17a2f251 | 18083 | md_show_usage (FILE *stream) |
e7af610e | 18084 | { |
316f5878 RS |
18085 | int column, first; |
18086 | size_t i; | |
18087 | ||
18088 | fprintf (stream, _("\ | |
18089 | MIPS options:\n\ | |
316f5878 RS |
18090 | -EB generate big endian output\n\ |
18091 | -EL generate little endian output\n\ | |
18092 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
18093 | -G NUM allow referencing objects up to NUM bytes\n\ | |
18094 | implicitly with the gp register [default 8]\n")); | |
18095 | fprintf (stream, _("\ | |
18096 | -mips1 generate MIPS ISA I instructions\n\ | |
18097 | -mips2 generate MIPS ISA II instructions\n\ | |
18098 | -mips3 generate MIPS ISA III instructions\n\ | |
18099 | -mips4 generate MIPS ISA IV instructions\n\ | |
18100 | -mips5 generate MIPS ISA V instructions\n\ | |
18101 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 18102 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 | 18103 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 18104 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
316f5878 RS |
18105 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
18106 | ||
18107 | first = 1; | |
e7af610e NC |
18108 | |
18109 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
18110 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
18111 | show (stream, "from-abi", &column, &first); | |
18112 | fputc ('\n', stream); | |
e7af610e | 18113 | |
316f5878 RS |
18114 | fprintf (stream, _("\ |
18115 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
18116 | -no-mCPU don't generate code specific to CPU.\n\ | |
18117 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
18118 | ||
18119 | first = 1; | |
18120 | ||
18121 | show (stream, "3900", &column, &first); | |
18122 | show (stream, "4010", &column, &first); | |
18123 | show (stream, "4100", &column, &first); | |
18124 | show (stream, "4650", &column, &first); | |
18125 | fputc ('\n', stream); | |
18126 | ||
18127 | fprintf (stream, _("\ | |
18128 | -mips16 generate mips16 instructions\n\ | |
18129 | -no-mips16 do not generate mips16 instructions\n")); | |
18130 | fprintf (stream, _("\ | |
df58fc94 RS |
18131 | -mmicromips generate microMIPS instructions\n\ |
18132 | -mno-micromips do not generate microMIPS instructions\n")); | |
18133 | fprintf (stream, _("\ | |
e16bfa71 TS |
18134 | -msmartmips generate smartmips instructions\n\ |
18135 | -mno-smartmips do not generate smartmips instructions\n")); | |
18136 | fprintf (stream, _("\ | |
74cd071d CF |
18137 | -mdsp generate DSP instructions\n\ |
18138 | -mno-dsp do not generate DSP instructions\n")); | |
18139 | fprintf (stream, _("\ | |
8b082fb1 TS |
18140 | -mdspr2 generate DSP R2 instructions\n\ |
18141 | -mno-dspr2 do not generate DSP R2 instructions\n")); | |
18142 | fprintf (stream, _("\ | |
ef2e4d86 CF |
18143 | -mmt generate MT instructions\n\ |
18144 | -mno-mt do not generate MT instructions\n")); | |
18145 | fprintf (stream, _("\ | |
dec0624d MR |
18146 | -mmcu generate MCU instructions\n\ |
18147 | -mno-mcu do not generate MCU instructions\n")); | |
18148 | fprintf (stream, _("\ | |
56d438b1 CF |
18149 | -mmsa generate MSA instructions\n\ |
18150 | -mno-msa do not generate MSA instructions\n")); | |
18151 | fprintf (stream, _("\ | |
b015e599 AP |
18152 | -mvirt generate Virtualization instructions\n\ |
18153 | -mno-virt do not generate Virtualization instructions\n")); | |
18154 | fprintf (stream, _("\ | |
833794fc MR |
18155 | -minsn32 only generate 32-bit microMIPS instructions\n\ |
18156 | -mno-insn32 generate all microMIPS instructions\n")); | |
18157 | fprintf (stream, _("\ | |
c67a084a NC |
18158 | -mfix-loongson2f-jump work around Loongson2F JUMP instructions\n\ |
18159 | -mfix-loongson2f-nop work around Loongson2F NOP errata\n\ | |
d766e8ec | 18160 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 18161 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
6a32d874 | 18162 | -mfix-24k insert a nop after ERET and DERET instructions\n\ |
d954098f | 18163 | -mfix-cn63xxp1 work around CN63XXP1 PREF errata\n\ |
316f5878 RS |
18164 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
18165 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 | 18166 | -msym32 assume all symbols have 32-bit values\n\ |
316f5878 RS |
18167 | -O0 remove unneeded NOPs, do not swap branches\n\ |
18168 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
18169 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ |
18170 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
037b32b9 AN |
18171 | fprintf (stream, _("\ |
18172 | -mhard-float allow floating-point instructions\n\ | |
18173 | -msoft-float do not allow floating-point instructions\n\ | |
18174 | -msingle-float only allow 32-bit floating-point operations\n\ | |
18175 | -mdouble-float allow 32-bit and 64-bit floating-point operations\n\ | |
3bf0dbfb | 18176 | --[no-]construct-floats [dis]allow floating point values to be constructed\n\ |
ba92f887 MR |
18177 | --[no-]relax-branch [dis]allow out-of-range branches to be relaxed\n\ |
18178 | -mnan=ENCODING select an IEEE 754 NaN encoding convention, either of:\n")); | |
18179 | ||
18180 | first = 1; | |
18181 | ||
18182 | show (stream, "legacy", &column, &first); | |
18183 | show (stream, "2008", &column, &first); | |
18184 | ||
18185 | fputc ('\n', stream); | |
18186 | ||
316f5878 RS |
18187 | fprintf (stream, _("\ |
18188 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
861fb55a | 18189 | -call_nonpic generate non-PIC code that can operate with DSOs\n\ |
0c000745 | 18190 | -mvxworks-pic generate VxWorks position independent code\n\ |
861fb55a | 18191 | -non_shared do not generate code that can operate with DSOs\n\ |
316f5878 | 18192 | -xgot assume a 32 bit GOT\n\ |
dcd410fe | 18193 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 | 18194 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
d821e36b | 18195 | position dependent (non shared) code\n\ |
316f5878 RS |
18196 | -mabi=ABI create ABI conformant object file for:\n")); |
18197 | ||
18198 | first = 1; | |
18199 | ||
18200 | show (stream, "32", &column, &first); | |
18201 | show (stream, "o64", &column, &first); | |
18202 | show (stream, "n32", &column, &first); | |
18203 | show (stream, "64", &column, &first); | |
18204 | show (stream, "eabi", &column, &first); | |
18205 | ||
18206 | fputc ('\n', stream); | |
18207 | ||
18208 | fprintf (stream, _("\ | |
18209 | -32 create o32 ABI object file (default)\n\ | |
18210 | -n32 create n32 ABI object file\n\ | |
18211 | -64 create 64 ABI object file\n")); | |
e7af610e | 18212 | } |
14e777e0 | 18213 | |
1575952e | 18214 | #ifdef TE_IRIX |
14e777e0 | 18215 | enum dwarf2_format |
413a266c | 18216 | mips_dwarf2_format (asection *sec ATTRIBUTE_UNUSED) |
14e777e0 | 18217 | { |
369943fe | 18218 | if (HAVE_64BIT_SYMBOLS) |
1575952e | 18219 | return dwarf2_format_64bit_irix; |
14e777e0 KB |
18220 | else |
18221 | return dwarf2_format_32bit; | |
18222 | } | |
1575952e | 18223 | #endif |
73369e65 EC |
18224 | |
18225 | int | |
18226 | mips_dwarf2_addr_size (void) | |
18227 | { | |
6b6b3450 | 18228 | if (HAVE_64BIT_OBJECTS) |
73369e65 | 18229 | return 8; |
73369e65 EC |
18230 | else |
18231 | return 4; | |
18232 | } | |
5862107c EC |
18233 | |
18234 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
18235 | void | |
18236 | mips_cfi_frame_initial_instructions (void) | |
18237 | { | |
18238 | cfi_add_CFA_def_cfa_register (SP); | |
18239 | } | |
18240 | ||
707bfff6 TS |
18241 | int |
18242 | tc_mips_regname_to_dw2regnum (char *regname) | |
18243 | { | |
18244 | unsigned int regnum = -1; | |
18245 | unsigned int reg; | |
18246 | ||
18247 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
18248 | regnum = reg; | |
18249 | ||
18250 | return regnum; | |
18251 | } |