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, |
45dfa85a | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
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 RH |
36 | |
37 | #ifdef DEBUG | |
38 | #define DBG(x) printf x | |
39 | #else | |
40 | #define DBG(x) | |
41 | #endif | |
42 | ||
43 | #ifdef OBJ_MAYBE_ELF | |
44 | /* Clean up namespace so we can include obj-elf.h too. */ | |
17a2f251 TS |
45 | static int mips_output_flavor (void); |
46 | static int mips_output_flavor (void) { return OUTPUT_FLAVOR; } | |
252b5132 RH |
47 | #undef OBJ_PROCESS_STAB |
48 | #undef OUTPUT_FLAVOR | |
49 | #undef S_GET_ALIGN | |
50 | #undef S_GET_SIZE | |
51 | #undef S_SET_ALIGN | |
52 | #undef S_SET_SIZE | |
252b5132 RH |
53 | #undef obj_frob_file |
54 | #undef obj_frob_file_after_relocs | |
55 | #undef obj_frob_symbol | |
56 | #undef obj_pop_insert | |
57 | #undef obj_sec_sym_ok_for_reloc | |
58 | #undef OBJ_COPY_SYMBOL_ATTRIBUTES | |
59 | ||
60 | #include "obj-elf.h" | |
61 | /* Fix any of them that we actually care about. */ | |
62 | #undef OUTPUT_FLAVOR | |
63 | #define OUTPUT_FLAVOR mips_output_flavor() | |
64 | #endif | |
65 | ||
66 | #if defined (OBJ_ELF) | |
67 | #include "elf/mips.h" | |
68 | #endif | |
69 | ||
70 | #ifndef ECOFF_DEBUGGING | |
71 | #define NO_ECOFF_DEBUGGING | |
72 | #define ECOFF_DEBUGGING 0 | |
73 | #endif | |
74 | ||
ecb4347a DJ |
75 | int mips_flag_mdebug = -1; |
76 | ||
dcd410fe RO |
77 | /* Control generation of .pdr sections. Off by default on IRIX: the native |
78 | linker doesn't know about and discards them, but relocations against them | |
79 | remain, leading to rld crashes. */ | |
80 | #ifdef TE_IRIX | |
81 | int mips_flag_pdr = FALSE; | |
82 | #else | |
83 | int mips_flag_pdr = TRUE; | |
84 | #endif | |
85 | ||
252b5132 RH |
86 | #include "ecoff.h" |
87 | ||
88 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
89 | static char *mips_regmask_frag; | |
90 | #endif | |
91 | ||
85b51719 | 92 | #define ZERO 0 |
741fe287 | 93 | #define ATREG 1 |
df58fc94 RS |
94 | #define S0 16 |
95 | #define S7 23 | |
252b5132 RH |
96 | #define TREG 24 |
97 | #define PIC_CALL_REG 25 | |
98 | #define KT0 26 | |
99 | #define KT1 27 | |
100 | #define GP 28 | |
101 | #define SP 29 | |
102 | #define FP 30 | |
103 | #define RA 31 | |
104 | ||
105 | #define ILLEGAL_REG (32) | |
106 | ||
741fe287 MR |
107 | #define AT mips_opts.at |
108 | ||
252b5132 RH |
109 | /* Allow override of standard little-endian ECOFF format. */ |
110 | ||
111 | #ifndef ECOFF_LITTLE_FORMAT | |
112 | #define ECOFF_LITTLE_FORMAT "ecoff-littlemips" | |
113 | #endif | |
114 | ||
115 | extern int target_big_endian; | |
116 | ||
252b5132 | 117 | /* The name of the readonly data section. */ |
4d0d148d | 118 | #define RDATA_SECTION_NAME (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ |
252b5132 | 119 | ? ".rdata" \ |
056350c6 NC |
120 | : OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
121 | ? ".rdata" \ | |
252b5132 RH |
122 | : OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
123 | ? ".rodata" \ | |
124 | : (abort (), "")) | |
125 | ||
a4e06468 RS |
126 | /* Ways in which an instruction can be "appended" to the output. */ |
127 | enum append_method { | |
128 | /* Just add it normally. */ | |
129 | APPEND_ADD, | |
130 | ||
131 | /* Add it normally and then add a nop. */ | |
132 | APPEND_ADD_WITH_NOP, | |
133 | ||
134 | /* Turn an instruction with a delay slot into a "compact" version. */ | |
135 | APPEND_ADD_COMPACT, | |
136 | ||
137 | /* Insert the instruction before the last one. */ | |
138 | APPEND_SWAP | |
139 | }; | |
140 | ||
47e39b9d RS |
141 | /* Information about an instruction, including its format, operands |
142 | and fixups. */ | |
143 | struct mips_cl_insn | |
144 | { | |
145 | /* The opcode's entry in mips_opcodes or mips16_opcodes. */ | |
146 | const struct mips_opcode *insn_mo; | |
147 | ||
47e39b9d | 148 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is |
5c04167a RS |
149 | a copy of INSN_MO->match with the operands filled in. If we have |
150 | decided to use an extended MIPS16 instruction, this includes the | |
151 | extension. */ | |
47e39b9d RS |
152 | unsigned long insn_opcode; |
153 | ||
154 | /* The frag that contains the instruction. */ | |
155 | struct frag *frag; | |
156 | ||
157 | /* The offset into FRAG of the first instruction byte. */ | |
158 | long where; | |
159 | ||
160 | /* The relocs associated with the instruction, if any. */ | |
161 | fixS *fixp[3]; | |
162 | ||
a38419a5 RS |
163 | /* True if this entry cannot be moved from its current position. */ |
164 | unsigned int fixed_p : 1; | |
47e39b9d | 165 | |
708587a4 | 166 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
167 | unsigned int noreorder_p : 1; |
168 | ||
2fa15973 RS |
169 | /* True for mips16 instructions that jump to an absolute address. */ |
170 | unsigned int mips16_absolute_jump_p : 1; | |
15be625d CM |
171 | |
172 | /* True if this instruction is complete. */ | |
173 | unsigned int complete_p : 1; | |
47e39b9d RS |
174 | }; |
175 | ||
a325df1d TS |
176 | /* The ABI to use. */ |
177 | enum mips_abi_level | |
178 | { | |
179 | NO_ABI = 0, | |
180 | O32_ABI, | |
181 | O64_ABI, | |
182 | N32_ABI, | |
183 | N64_ABI, | |
184 | EABI_ABI | |
185 | }; | |
186 | ||
187 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 188 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 189 | |
143d77c5 EC |
190 | /* Whether or not we have code that can call pic code. */ |
191 | int mips_abicalls = FALSE; | |
192 | ||
aa6975fb ILT |
193 | /* Whether or not we have code which can be put into a shared |
194 | library. */ | |
195 | static bfd_boolean mips_in_shared = TRUE; | |
196 | ||
252b5132 RH |
197 | /* This is the set of options which may be modified by the .set |
198 | pseudo-op. We use a struct so that .set push and .set pop are more | |
199 | reliable. */ | |
200 | ||
e972090a NC |
201 | struct mips_set_options |
202 | { | |
252b5132 RH |
203 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
204 | if it has not been initialized. Changed by `.set mipsN', and the | |
205 | -mipsN command line option, and the default CPU. */ | |
206 | int isa; | |
1f25f5d3 CD |
207 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
208 | if they have not been initialized. Changed by `.set <asename>', by | |
209 | command line options, and based on the default architecture. */ | |
210 | int ase_mips3d; | |
deec1734 | 211 | int ase_mdmx; |
e16bfa71 | 212 | int ase_smartmips; |
74cd071d | 213 | int ase_dsp; |
8b082fb1 | 214 | int ase_dspr2; |
ef2e4d86 | 215 | int ase_mt; |
dec0624d | 216 | int ase_mcu; |
252b5132 RH |
217 | /* Whether we are assembling for the mips16 processor. 0 if we are |
218 | not, 1 if we are, and -1 if the value has not been initialized. | |
219 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
220 | -nomips16 command line options, and the default CPU. */ | |
221 | int mips16; | |
df58fc94 RS |
222 | /* Whether we are assembling for the mipsMIPS ASE. 0 if we are not, |
223 | 1 if we are, and -1 if the value has not been initialized. Changed | |
224 | by `.set micromips' and `.set nomicromips', and the -mmicromips | |
225 | and -mno-micromips command line options, and the default CPU. */ | |
226 | int micromips; | |
252b5132 RH |
227 | /* Non-zero if we should not reorder instructions. Changed by `.set |
228 | reorder' and `.set noreorder'. */ | |
229 | int noreorder; | |
741fe287 MR |
230 | /* Non-zero if we should not permit the register designated "assembler |
231 | temporary" to be used in instructions. The value is the register | |
232 | number, normally $at ($1). Changed by `.set at=REG', `.set noat' | |
233 | (same as `.set at=$0') and `.set at' (same as `.set at=$1'). */ | |
234 | unsigned int at; | |
252b5132 RH |
235 | /* Non-zero if we should warn when a macro instruction expands into |
236 | more than one machine instruction. Changed by `.set nomacro' and | |
237 | `.set macro'. */ | |
238 | int warn_about_macros; | |
239 | /* Non-zero if we should not move instructions. Changed by `.set | |
240 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
241 | int nomove; | |
242 | /* Non-zero if we should not optimize branches by moving the target | |
243 | of the branch into the delay slot. Actually, we don't perform | |
244 | this optimization anyhow. Changed by `.set bopt' and `.set | |
245 | nobopt'. */ | |
246 | int nobopt; | |
247 | /* Non-zero if we should not autoextend mips16 instructions. | |
248 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
249 | int noautoextend; | |
a325df1d TS |
250 | /* Restrict general purpose registers and floating point registers |
251 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
252 | is passed but can changed if the assembler code uses .set mipsN. */ | |
253 | int gp32; | |
254 | int fp32; | |
fef14a42 TS |
255 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
256 | command line option, and the default CPU. */ | |
257 | int arch; | |
aed1a261 RS |
258 | /* True if ".set sym32" is in effect. */ |
259 | bfd_boolean sym32; | |
037b32b9 AN |
260 | /* True if floating-point operations are not allowed. Changed by .set |
261 | softfloat or .set hardfloat, by command line options -msoft-float or | |
262 | -mhard-float. The default is false. */ | |
263 | bfd_boolean soft_float; | |
264 | ||
265 | /* True if only single-precision floating-point operations are allowed. | |
266 | Changed by .set singlefloat or .set doublefloat, command-line options | |
267 | -msingle-float or -mdouble-float. The default is false. */ | |
268 | bfd_boolean single_float; | |
252b5132 RH |
269 | }; |
270 | ||
037b32b9 AN |
271 | /* This is the struct we use to hold the current set of options. Note |
272 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to | |
273 | -1 to indicate that they have not been initialized. */ | |
274 | ||
a325df1d | 275 | /* True if -mgp32 was passed. */ |
a8e8e863 | 276 | static int file_mips_gp32 = -1; |
a325df1d TS |
277 | |
278 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 279 | static int file_mips_fp32 = -1; |
a325df1d | 280 | |
037b32b9 AN |
281 | /* 1 if -msoft-float, 0 if -mhard-float. The default is 0. */ |
282 | static int file_mips_soft_float = 0; | |
283 | ||
284 | /* 1 if -msingle-float, 0 if -mdouble-float. The default is 0. */ | |
285 | static int file_mips_single_float = 0; | |
252b5132 | 286 | |
e972090a NC |
287 | static struct mips_set_options mips_opts = |
288 | { | |
037b32b9 AN |
289 | /* isa */ ISA_UNKNOWN, /* ase_mips3d */ -1, /* ase_mdmx */ -1, |
290 | /* ase_smartmips */ 0, /* ase_dsp */ -1, /* ase_dspr2 */ -1, /* ase_mt */ -1, | |
dec0624d MR |
291 | /* ase_mcu */ -1, /* mips16 */ -1, /* micromips */ -1, /* noreorder */ 0, |
292 | /* at */ ATREG, /* warn_about_macros */ 0, /* nomove */ 0, /* nobopt */ 0, | |
037b32b9 AN |
293 | /* noautoextend */ 0, /* gp32 */ 0, /* fp32 */ 0, /* arch */ CPU_UNKNOWN, |
294 | /* sym32 */ FALSE, /* soft_float */ FALSE, /* single_float */ FALSE | |
e7af610e | 295 | }; |
252b5132 RH |
296 | |
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 | ||
1f25f5d3 CD |
329 | /* True if -mips3d was passed or implied by arguments passed on the |
330 | command line (e.g., by -march). */ | |
331 | static int file_ase_mips3d; | |
332 | ||
deec1734 CD |
333 | /* True if -mdmx was passed or implied by arguments passed on the |
334 | command line (e.g., by -march). */ | |
335 | static int file_ase_mdmx; | |
336 | ||
e16bfa71 TS |
337 | /* True if -msmartmips was passed or implied by arguments passed on the |
338 | command line (e.g., by -march). */ | |
339 | static int file_ase_smartmips; | |
340 | ||
ad3fea08 TS |
341 | #define ISA_SUPPORTS_SMARTMIPS (mips_opts.isa == ISA_MIPS32 \ |
342 | || mips_opts.isa == ISA_MIPS32R2) | |
e16bfa71 | 343 | |
74cd071d CF |
344 | /* True if -mdsp was passed or implied by arguments passed on the |
345 | command line (e.g., by -march). */ | |
346 | static int file_ase_dsp; | |
347 | ||
ad3fea08 | 348 | #define ISA_SUPPORTS_DSP_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
03f66e8a MR |
349 | || mips_opts.isa == ISA_MIPS64R2 \ |
350 | || mips_opts.micromips) | |
ad3fea08 | 351 | |
65263ce3 TS |
352 | #define ISA_SUPPORTS_DSP64_ASE (mips_opts.isa == ISA_MIPS64R2) |
353 | ||
8b082fb1 TS |
354 | /* True if -mdspr2 was passed or implied by arguments passed on the |
355 | command line (e.g., by -march). */ | |
356 | static int file_ase_dspr2; | |
357 | ||
358 | #define ISA_SUPPORTS_DSPR2_ASE (mips_opts.isa == ISA_MIPS32R2 \ | |
03f66e8a MR |
359 | || mips_opts.isa == ISA_MIPS64R2 \ |
360 | || mips_opts.micromips) | |
8b082fb1 | 361 | |
ef2e4d86 CF |
362 | /* True if -mmt was passed or implied by arguments passed on the |
363 | command line (e.g., by -march). */ | |
364 | static int file_ase_mt; | |
365 | ||
ad3fea08 TS |
366 | #define ISA_SUPPORTS_MT_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
367 | || mips_opts.isa == ISA_MIPS64R2) | |
368 | ||
dec0624d | 369 | #define ISA_SUPPORTS_MCU_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
9ddc84cc MR |
370 | || mips_opts.isa == ISA_MIPS64R2 \ |
371 | || mips_opts.micromips) | |
dec0624d | 372 | |
ec68c924 | 373 | /* The argument of the -march= flag. The architecture we are assembling. */ |
fef14a42 | 374 | static int file_mips_arch = CPU_UNKNOWN; |
316f5878 | 375 | static const char *mips_arch_string; |
ec68c924 EC |
376 | |
377 | /* The argument of the -mtune= flag. The architecture for which we | |
378 | are optimizing. */ | |
379 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 380 | static const char *mips_tune_string; |
ec68c924 | 381 | |
316f5878 | 382 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
383 | static int mips_32bitmode = 0; |
384 | ||
316f5878 RS |
385 | /* True if the given ABI requires 32-bit registers. */ |
386 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
387 | ||
388 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
389 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
390 | ((ABI) == N32_ABI \ | |
391 | || (ABI) == N64_ABI \ | |
316f5878 RS |
392 | || (ABI) == O64_ABI) |
393 | ||
ad3fea08 | 394 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
395 | #define ISA_HAS_64BIT_REGS(ISA) \ |
396 | ((ISA) == ISA_MIPS3 \ | |
397 | || (ISA) == ISA_MIPS4 \ | |
398 | || (ISA) == ISA_MIPS5 \ | |
399 | || (ISA) == ISA_MIPS64 \ | |
400 | || (ISA) == ISA_MIPS64R2) | |
9ce8a5dd | 401 | |
ad3fea08 TS |
402 | /* Return true if ISA supports 64 bit wide float registers. */ |
403 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
404 | ((ISA) == ISA_MIPS3 \ | |
405 | || (ISA) == ISA_MIPS4 \ | |
406 | || (ISA) == ISA_MIPS5 \ | |
407 | || (ISA) == ISA_MIPS32R2 \ | |
408 | || (ISA) == ISA_MIPS64 \ | |
409 | || (ISA) == ISA_MIPS64R2) | |
410 | ||
af7ee8bf CD |
411 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
412 | instructions. */ | |
707bfff6 | 413 | #define ISA_HAS_DROR(ISA) \ |
df58fc94 RS |
414 | ((ISA) == ISA_MIPS64R2 \ |
415 | || (mips_opts.micromips \ | |
416 | && ISA_HAS_64BIT_REGS (ISA)) \ | |
417 | ) | |
af7ee8bf CD |
418 | |
419 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
420 | instructions. */ | |
707bfff6 TS |
421 | #define ISA_HAS_ROR(ISA) \ |
422 | ((ISA) == ISA_MIPS32R2 \ | |
423 | || (ISA) == ISA_MIPS64R2 \ | |
df58fc94 RS |
424 | || mips_opts.ase_smartmips \ |
425 | || mips_opts.micromips \ | |
426 | ) | |
707bfff6 | 427 | |
7455baf8 TS |
428 | /* Return true if ISA supports single-precision floats in odd registers. */ |
429 | #define ISA_HAS_ODD_SINGLE_FPR(ISA) \ | |
430 | ((ISA) == ISA_MIPS32 \ | |
431 | || (ISA) == ISA_MIPS32R2 \ | |
432 | || (ISA) == ISA_MIPS64 \ | |
433 | || (ISA) == ISA_MIPS64R2) | |
af7ee8bf | 434 | |
ad3fea08 TS |
435 | /* Return true if ISA supports move to/from high part of a 64-bit |
436 | floating-point register. */ | |
437 | #define ISA_HAS_MXHC1(ISA) \ | |
438 | ((ISA) == ISA_MIPS32R2 \ | |
439 | || (ISA) == ISA_MIPS64R2) | |
440 | ||
e013f690 | 441 | #define HAVE_32BIT_GPRS \ |
ad3fea08 | 442 | (mips_opts.gp32 || !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 443 | |
e013f690 | 444 | #define HAVE_32BIT_FPRS \ |
ad3fea08 | 445 | (mips_opts.fp32 || !ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
ca4e0257 | 446 | |
ad3fea08 TS |
447 | #define HAVE_64BIT_GPRS (!HAVE_32BIT_GPRS) |
448 | #define HAVE_64BIT_FPRS (!HAVE_32BIT_FPRS) | |
ca4e0257 | 449 | |
316f5878 | 450 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 451 | |
316f5878 | 452 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 453 | |
3b91255e RS |
454 | /* True if relocations are stored in-place. */ |
455 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
456 | ||
aed1a261 RS |
457 | /* The ABI-derived address size. */ |
458 | #define HAVE_64BIT_ADDRESSES \ | |
459 | (HAVE_64BIT_GPRS && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) | |
460 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) | |
e013f690 | 461 | |
aed1a261 RS |
462 | /* The size of symbolic constants (i.e., expressions of the form |
463 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
464 | #define HAVE_32BIT_SYMBOLS \ | |
465 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
466 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 467 | |
b7c7d6c1 TS |
468 | /* Addresses are loaded in different ways, depending on the address size |
469 | in use. The n32 ABI Documentation also mandates the use of additions | |
470 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 471 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 472 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
473 | |
474 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 475 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
476 | |
477 | #define ADDRESS_LOAD_INSN \ | |
478 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
479 | ||
480 | #define ADDRESS_STORE_INSN \ | |
481 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
482 | ||
a4672219 | 483 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
484 | #define CPU_HAS_MIPS16(cpu) \ |
485 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
486 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 487 | |
2309ddf2 | 488 | /* Return true if the given CPU supports the microMIPS ASE. */ |
df58fc94 RS |
489 | #define CPU_HAS_MICROMIPS(cpu) 0 |
490 | ||
60b63b72 RS |
491 | /* True if CPU has a dror instruction. */ |
492 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
493 | ||
494 | /* True if CPU has a ror instruction. */ | |
495 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
496 | ||
dd6a37e7 | 497 | /* True if CPU is in the Octeon family */ |
432233b3 | 498 | #define CPU_IS_OCTEON(CPU) ((CPU) == CPU_OCTEON || (CPU) == CPU_OCTEONP || (CPU) == CPU_OCTEON2) |
dd6a37e7 | 499 | |
dd3cbb7e | 500 | /* True if CPU has seq/sne and seqi/snei instructions. */ |
dd6a37e7 | 501 | #define CPU_HAS_SEQ(CPU) (CPU_IS_OCTEON (CPU)) |
dd3cbb7e | 502 | |
c8978940 CD |
503 | /* True if mflo and mfhi can be immediately followed by instructions |
504 | which write to the HI and LO registers. | |
505 | ||
506 | According to MIPS specifications, MIPS ISAs I, II, and III need | |
507 | (at least) two instructions between the reads of HI/LO and | |
508 | instructions which write them, and later ISAs do not. Contradicting | |
509 | the MIPS specifications, some MIPS IV processor user manuals (e.g. | |
510 | the UM for the NEC Vr5000) document needing the instructions between | |
511 | HI/LO reads and writes, as well. Therefore, we declare only MIPS32, | |
512 | MIPS64 and later ISAs to have the interlocks, plus any specific | |
513 | earlier-ISA CPUs for which CPU documentation declares that the | |
514 | instructions are really interlocked. */ | |
515 | #define hilo_interlocks \ | |
516 | (mips_opts.isa == ISA_MIPS32 \ | |
517 | || mips_opts.isa == ISA_MIPS32R2 \ | |
518 | || mips_opts.isa == ISA_MIPS64 \ | |
519 | || mips_opts.isa == ISA_MIPS64R2 \ | |
520 | || mips_opts.arch == CPU_R4010 \ | |
521 | || mips_opts.arch == CPU_R10000 \ | |
522 | || mips_opts.arch == CPU_R12000 \ | |
3aa3176b TS |
523 | || mips_opts.arch == CPU_R14000 \ |
524 | || mips_opts.arch == CPU_R16000 \ | |
c8978940 | 525 | || mips_opts.arch == CPU_RM7000 \ |
c8978940 | 526 | || mips_opts.arch == CPU_VR5500 \ |
df58fc94 | 527 | || mips_opts.micromips \ |
c8978940 | 528 | ) |
252b5132 RH |
529 | |
530 | /* Whether the processor uses hardware interlocks to protect reads | |
81912461 ILT |
531 | from the GPRs after they are loaded from memory, and thus does not |
532 | require nops to be inserted. This applies to instructions marked | |
533 | INSN_LOAD_MEMORY_DELAY. These nops are only required at MIPS ISA | |
df58fc94 RS |
534 | level I and microMIPS mode instructions are always interlocked. */ |
535 | #define gpr_interlocks \ | |
536 | (mips_opts.isa != ISA_MIPS1 \ | |
537 | || mips_opts.arch == CPU_R3900 \ | |
538 | || mips_opts.micromips \ | |
539 | ) | |
252b5132 | 540 | |
81912461 ILT |
541 | /* Whether the processor uses hardware interlocks to avoid delays |
542 | required by coprocessor instructions, and thus does not require | |
543 | nops to be inserted. This applies to instructions marked | |
544 | INSN_LOAD_COPROC_DELAY, INSN_COPROC_MOVE_DELAY, and to delays | |
545 | between instructions marked INSN_WRITE_COND_CODE and ones marked | |
546 | INSN_READ_COND_CODE. These nops are only required at MIPS ISA | |
df58fc94 RS |
547 | levels I, II, and III and microMIPS mode instructions are always |
548 | interlocked. */ | |
bdaaa2e1 | 549 | /* Itbl support may require additional care here. */ |
81912461 ILT |
550 | #define cop_interlocks \ |
551 | ((mips_opts.isa != ISA_MIPS1 \ | |
552 | && mips_opts.isa != ISA_MIPS2 \ | |
553 | && mips_opts.isa != ISA_MIPS3) \ | |
554 | || mips_opts.arch == CPU_R4300 \ | |
df58fc94 | 555 | || mips_opts.micromips \ |
81912461 ILT |
556 | ) |
557 | ||
558 | /* Whether the processor uses hardware interlocks to protect reads | |
559 | from coprocessor registers after they are loaded from memory, and | |
560 | thus does not require nops to be inserted. This applies to | |
561 | instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only | |
df58fc94 RS |
562 | requires at MIPS ISA level I and microMIPS mode instructions are |
563 | always interlocked. */ | |
564 | #define cop_mem_interlocks \ | |
565 | (mips_opts.isa != ISA_MIPS1 \ | |
566 | || mips_opts.micromips \ | |
567 | ) | |
252b5132 | 568 | |
6b76fefe CM |
569 | /* Is this a mfhi or mflo instruction? */ |
570 | #define MF_HILO_INSN(PINFO) \ | |
b19e8a9b AN |
571 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) |
572 | ||
df58fc94 RS |
573 | /* Whether code compression (either of the MIPS16 or the microMIPS ASEs) |
574 | has been selected. This implies, in particular, that addresses of text | |
575 | labels have their LSB set. */ | |
576 | #define HAVE_CODE_COMPRESSION \ | |
577 | ((mips_opts.mips16 | mips_opts.micromips) != 0) | |
578 | ||
252b5132 RH |
579 | /* MIPS PIC level. */ |
580 | ||
a161fe53 | 581 | enum mips_pic_level mips_pic; |
252b5132 | 582 | |
c9914766 | 583 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 584 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 585 | static int mips_big_got = 0; |
252b5132 RH |
586 | |
587 | /* 1 if trap instructions should used for overflow rather than break | |
588 | instructions. */ | |
c9914766 | 589 | static int mips_trap = 0; |
252b5132 | 590 | |
119d663a | 591 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 592 | by assembling two single width halves into two single width floating |
119d663a NC |
593 | point registers which just happen to alias the double width destination |
594 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 595 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
596 | automatically at assemble time. */ |
597 | static int mips_disable_float_construction; | |
598 | ||
252b5132 RH |
599 | /* Non-zero if any .set noreorder directives were used. */ |
600 | ||
601 | static int mips_any_noreorder; | |
602 | ||
6b76fefe CM |
603 | /* Non-zero if nops should be inserted when the register referenced in |
604 | an mfhi/mflo instruction is read in the next two instructions. */ | |
605 | static int mips_7000_hilo_fix; | |
606 | ||
02ffd3e4 | 607 | /* The size of objects in the small data section. */ |
156c2f8b | 608 | static unsigned int g_switch_value = 8; |
252b5132 RH |
609 | /* Whether the -G option was used. */ |
610 | static int g_switch_seen = 0; | |
611 | ||
612 | #define N_RMASK 0xc4 | |
613 | #define N_VFP 0xd4 | |
614 | ||
615 | /* If we can determine in advance that GP optimization won't be | |
616 | possible, we can skip the relaxation stuff that tries to produce | |
617 | GP-relative references. This makes delay slot optimization work | |
618 | better. | |
619 | ||
620 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
621 | gcc output. It needs to guess right for gcc, otherwise gcc |
622 | will put what it thinks is a GP-relative instruction in a branch | |
623 | delay slot. | |
252b5132 RH |
624 | |
625 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
626 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 627 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
628 | |
629 | /* handle of the OPCODE hash table */ | |
630 | static struct hash_control *op_hash = NULL; | |
631 | ||
632 | /* The opcode hash table we use for the mips16. */ | |
633 | static struct hash_control *mips16_op_hash = NULL; | |
634 | ||
df58fc94 RS |
635 | /* The opcode hash table we use for the microMIPS ASE. */ |
636 | static struct hash_control *micromips_op_hash = NULL; | |
637 | ||
252b5132 RH |
638 | /* This array holds the chars that always start a comment. If the |
639 | pre-processor is disabled, these aren't very useful */ | |
640 | const char comment_chars[] = "#"; | |
641 | ||
642 | /* This array holds the chars that only start a comment at the beginning of | |
643 | a line. If the line seems to have the form '# 123 filename' | |
644 | .line and .file directives will appear in the pre-processed output */ | |
645 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
646 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 647 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
648 | /* Also note that C style comments are always supported. */ |
649 | const char line_comment_chars[] = "#"; | |
650 | ||
bdaaa2e1 | 651 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 652 | const char line_separator_chars[] = ";"; |
252b5132 RH |
653 | |
654 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
655 | const char EXP_CHARS[] = "eE"; | |
656 | ||
657 | /* Chars that mean this number is a floating point constant */ | |
658 | /* As in 0f12.456 */ | |
659 | /* or 0d1.2345e12 */ | |
660 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
661 | ||
662 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
663 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
664 | but nothing is ideal around here. | |
665 | */ | |
666 | ||
667 | static char *insn_error; | |
668 | ||
669 | static int auto_align = 1; | |
670 | ||
671 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
672 | offset in the stack frame from which to restore the $gp register. | |
673 | This is set by the .cprestore pseudo-op, and saved in this | |
674 | variable. */ | |
675 | static offsetT mips_cprestore_offset = -1; | |
676 | ||
67c1ffbe | 677 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 678 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 679 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
680 | static offsetT mips_cpreturn_offset = -1; |
681 | static int mips_cpreturn_register = -1; | |
682 | static int mips_gp_register = GP; | |
def2e0dd | 683 | static int mips_gprel_offset = 0; |
6478892d | 684 | |
7a621144 DJ |
685 | /* Whether mips_cprestore_offset has been set in the current function |
686 | (or whether it has already been warned about, if not). */ | |
687 | static int mips_cprestore_valid = 0; | |
688 | ||
252b5132 RH |
689 | /* This is the register which holds the stack frame, as set by the |
690 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
691 | static int mips_frame_reg = SP; | |
692 | ||
7a621144 DJ |
693 | /* Whether mips_frame_reg has been set in the current function |
694 | (or whether it has already been warned about, if not). */ | |
695 | static int mips_frame_reg_valid = 0; | |
696 | ||
252b5132 RH |
697 | /* To output NOP instructions correctly, we need to keep information |
698 | about the previous two instructions. */ | |
699 | ||
700 | /* Whether we are optimizing. The default value of 2 means to remove | |
701 | unneeded NOPs and swap branch instructions when possible. A value | |
702 | of 1 means to not swap branches. A value of 0 means to always | |
703 | insert NOPs. */ | |
704 | static int mips_optimize = 2; | |
705 | ||
706 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
707 | equivalent to seeing no -g option at all. */ | |
708 | static int mips_debug = 0; | |
709 | ||
7d8e00cf RS |
710 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
711 | #define MAX_VR4130_NOPS 4 | |
712 | ||
713 | /* The maximum number of NOPs needed to fill delay slots. */ | |
714 | #define MAX_DELAY_NOPS 2 | |
715 | ||
716 | /* The maximum number of NOPs needed for any purpose. */ | |
717 | #define MAX_NOPS 4 | |
71400594 RS |
718 | |
719 | /* A list of previous instructions, with index 0 being the most recent. | |
720 | We need to look back MAX_NOPS instructions when filling delay slots | |
721 | or working around processor errata. We need to look back one | |
722 | instruction further if we're thinking about using history[0] to | |
723 | fill a branch delay slot. */ | |
724 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 725 | |
1e915849 | 726 | /* Nop instructions used by emit_nop. */ |
df58fc94 RS |
727 | static struct mips_cl_insn nop_insn; |
728 | static struct mips_cl_insn mips16_nop_insn; | |
729 | static struct mips_cl_insn micromips_nop16_insn; | |
730 | static struct mips_cl_insn micromips_nop32_insn; | |
1e915849 RS |
731 | |
732 | /* The appropriate nop for the current mode. */ | |
df58fc94 RS |
733 | #define NOP_INSN (mips_opts.mips16 ? &mips16_nop_insn \ |
734 | : (mips_opts.micromips ? µmips_nop16_insn : &nop_insn)) | |
735 | ||
736 | /* The size of NOP_INSN in bytes. */ | |
737 | #define NOP_INSN_SIZE (HAVE_CODE_COMPRESSION ? 2 : 4) | |
252b5132 | 738 | |
252b5132 RH |
739 | /* If this is set, it points to a frag holding nop instructions which |
740 | were inserted before the start of a noreorder section. If those | |
741 | nops turn out to be unnecessary, the size of the frag can be | |
742 | decreased. */ | |
743 | static fragS *prev_nop_frag; | |
744 | ||
745 | /* The number of nop instructions we created in prev_nop_frag. */ | |
746 | static int prev_nop_frag_holds; | |
747 | ||
748 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 749 | prev_nop_frag. */ |
252b5132 RH |
750 | static int prev_nop_frag_required; |
751 | ||
752 | /* The number of instructions we've seen since prev_nop_frag. */ | |
753 | static int prev_nop_frag_since; | |
754 | ||
755 | /* For ECOFF and ELF, relocations against symbols are done in two | |
756 | parts, with a HI relocation and a LO relocation. Each relocation | |
757 | has only 16 bits of space to store an addend. This means that in | |
758 | order for the linker to handle carries correctly, it must be able | |
759 | to locate both the HI and the LO relocation. This means that the | |
760 | relocations must appear in order in the relocation table. | |
761 | ||
762 | In order to implement this, we keep track of each unmatched HI | |
763 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 764 | corresponding LO relocation. */ |
252b5132 | 765 | |
e972090a NC |
766 | struct mips_hi_fixup |
767 | { | |
252b5132 RH |
768 | /* Next HI fixup. */ |
769 | struct mips_hi_fixup *next; | |
770 | /* This fixup. */ | |
771 | fixS *fixp; | |
772 | /* The section this fixup is in. */ | |
773 | segT seg; | |
774 | }; | |
775 | ||
776 | /* The list of unmatched HI relocs. */ | |
777 | ||
778 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
779 | ||
64bdfcaf RS |
780 | /* The frag containing the last explicit relocation operator. |
781 | Null if explicit relocations have not been used. */ | |
782 | ||
783 | static fragS *prev_reloc_op_frag; | |
784 | ||
252b5132 RH |
785 | /* Map normal MIPS register numbers to mips16 register numbers. */ |
786 | ||
787 | #define X ILLEGAL_REG | |
e972090a NC |
788 | static const int mips32_to_16_reg_map[] = |
789 | { | |
252b5132 RH |
790 | X, X, 2, 3, 4, 5, 6, 7, |
791 | X, X, X, X, X, X, X, X, | |
792 | 0, 1, X, X, X, X, X, X, | |
793 | X, X, X, X, X, X, X, X | |
794 | }; | |
795 | #undef X | |
796 | ||
797 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
798 | ||
e972090a NC |
799 | static const unsigned int mips16_to_32_reg_map[] = |
800 | { | |
252b5132 RH |
801 | 16, 17, 2, 3, 4, 5, 6, 7 |
802 | }; | |
60b63b72 | 803 | |
df58fc94 RS |
804 | /* Map normal MIPS register numbers to microMIPS register numbers. */ |
805 | ||
806 | #define mips32_to_micromips_reg_b_map mips32_to_16_reg_map | |
807 | #define mips32_to_micromips_reg_c_map mips32_to_16_reg_map | |
808 | #define mips32_to_micromips_reg_d_map mips32_to_16_reg_map | |
809 | #define mips32_to_micromips_reg_e_map mips32_to_16_reg_map | |
810 | #define mips32_to_micromips_reg_f_map mips32_to_16_reg_map | |
811 | #define mips32_to_micromips_reg_g_map mips32_to_16_reg_map | |
812 | #define mips32_to_micromips_reg_l_map mips32_to_16_reg_map | |
813 | ||
814 | #define X ILLEGAL_REG | |
815 | /* reg type h: 4, 5, 6. */ | |
816 | static const int mips32_to_micromips_reg_h_map[] = | |
817 | { | |
818 | X, X, X, X, 4, 5, 6, X, | |
819 | X, X, X, X, X, X, X, X, | |
820 | X, X, X, X, X, X, X, X, | |
821 | X, X, X, X, X, X, X, X | |
822 | }; | |
823 | ||
824 | /* reg type m: 0, 17, 2, 3, 16, 18, 19, 20. */ | |
825 | static const int mips32_to_micromips_reg_m_map[] = | |
826 | { | |
827 | 0, X, 2, 3, X, X, X, X, | |
828 | X, X, X, X, X, X, X, X, | |
829 | 4, 1, 5, 6, 7, X, X, X, | |
830 | X, X, X, X, X, X, X, X | |
831 | }; | |
832 | ||
833 | /* reg type q: 0, 2-7. 17. */ | |
834 | static const int mips32_to_micromips_reg_q_map[] = | |
835 | { | |
836 | 0, X, 2, 3, 4, 5, 6, 7, | |
837 | X, X, X, X, X, X, X, X, | |
838 | X, 1, X, X, X, X, X, X, | |
839 | X, X, X, X, X, X, X, X | |
840 | }; | |
841 | ||
842 | #define mips32_to_micromips_reg_n_map mips32_to_micromips_reg_m_map | |
843 | #undef X | |
844 | ||
845 | /* Map microMIPS register numbers to normal MIPS register numbers. */ | |
846 | ||
847 | #define micromips_to_32_reg_b_map mips16_to_32_reg_map | |
848 | #define micromips_to_32_reg_c_map mips16_to_32_reg_map | |
849 | #define micromips_to_32_reg_d_map mips16_to_32_reg_map | |
850 | #define micromips_to_32_reg_e_map mips16_to_32_reg_map | |
851 | #define micromips_to_32_reg_f_map mips16_to_32_reg_map | |
852 | #define micromips_to_32_reg_g_map mips16_to_32_reg_map | |
853 | ||
854 | /* The microMIPS registers with type h. */ | |
855 | static const unsigned int micromips_to_32_reg_h_map[] = | |
856 | { | |
857 | 5, 5, 6, 4, 4, 4, 4, 4 | |
858 | }; | |
859 | ||
860 | /* The microMIPS registers with type i. */ | |
861 | static const unsigned int micromips_to_32_reg_i_map[] = | |
862 | { | |
863 | 6, 7, 7, 21, 22, 5, 6, 7 | |
864 | }; | |
865 | ||
866 | #define micromips_to_32_reg_l_map mips16_to_32_reg_map | |
867 | ||
868 | /* The microMIPS registers with type m. */ | |
869 | static const unsigned int micromips_to_32_reg_m_map[] = | |
870 | { | |
871 | 0, 17, 2, 3, 16, 18, 19, 20 | |
872 | }; | |
873 | ||
874 | #define micromips_to_32_reg_n_map micromips_to_32_reg_m_map | |
875 | ||
876 | /* The microMIPS registers with type q. */ | |
877 | static const unsigned int micromips_to_32_reg_q_map[] = | |
878 | { | |
879 | 0, 17, 2, 3, 4, 5, 6, 7 | |
880 | }; | |
881 | ||
882 | /* microMIPS imm type B. */ | |
883 | static const int micromips_imm_b_map[] = | |
884 | { | |
885 | 1, 4, 8, 12, 16, 20, 24, -1 | |
886 | }; | |
887 | ||
888 | /* microMIPS imm type C. */ | |
889 | static const int micromips_imm_c_map[] = | |
890 | { | |
891 | 128, 1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 255, 32768, 65535 | |
892 | }; | |
893 | ||
71400594 RS |
894 | /* Classifies the kind of instructions we're interested in when |
895 | implementing -mfix-vr4120. */ | |
c67a084a NC |
896 | enum fix_vr4120_class |
897 | { | |
71400594 RS |
898 | FIX_VR4120_MACC, |
899 | FIX_VR4120_DMACC, | |
900 | FIX_VR4120_MULT, | |
901 | FIX_VR4120_DMULT, | |
902 | FIX_VR4120_DIV, | |
903 | FIX_VR4120_MTHILO, | |
904 | NUM_FIX_VR4120_CLASSES | |
905 | }; | |
906 | ||
c67a084a NC |
907 | /* ...likewise -mfix-loongson2f-jump. */ |
908 | static bfd_boolean mips_fix_loongson2f_jump; | |
909 | ||
910 | /* ...likewise -mfix-loongson2f-nop. */ | |
911 | static bfd_boolean mips_fix_loongson2f_nop; | |
912 | ||
913 | /* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed. */ | |
914 | static bfd_boolean mips_fix_loongson2f; | |
915 | ||
71400594 RS |
916 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if |
917 | there must be at least one other instruction between an instruction | |
918 | of type X and an instruction of type Y. */ | |
919 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
920 | ||
921 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 922 | static int mips_fix_vr4120; |
4a6a3df4 | 923 | |
7d8e00cf RS |
924 | /* ...likewise -mfix-vr4130. */ |
925 | static int mips_fix_vr4130; | |
926 | ||
6a32d874 CM |
927 | /* ...likewise -mfix-24k. */ |
928 | static int mips_fix_24k; | |
929 | ||
d954098f DD |
930 | /* ...likewise -mfix-cn63xxp1 */ |
931 | static bfd_boolean mips_fix_cn63xxp1; | |
932 | ||
4a6a3df4 AO |
933 | /* We don't relax branches by default, since this causes us to expand |
934 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
935 | fail to compute the offset before expanding the macro to the most | |
936 | efficient expansion. */ | |
937 | ||
938 | static int mips_relax_branch; | |
252b5132 | 939 | \f |
4d7206a2 RS |
940 | /* The expansion of many macros depends on the type of symbol that |
941 | they refer to. For example, when generating position-dependent code, | |
942 | a macro that refers to a symbol may have two different expansions, | |
943 | one which uses GP-relative addresses and one which uses absolute | |
944 | addresses. When generating SVR4-style PIC, a macro may have | |
945 | different expansions for local and global symbols. | |
946 | ||
947 | We handle these situations by generating both sequences and putting | |
948 | them in variant frags. In position-dependent code, the first sequence | |
949 | will be the GP-relative one and the second sequence will be the | |
950 | absolute one. In SVR4 PIC, the first sequence will be for global | |
951 | symbols and the second will be for local symbols. | |
952 | ||
584892a6 RS |
953 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
954 | SECOND are the lengths of the two sequences in bytes. These fields | |
955 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
956 | the subtype has the following flags: | |
4d7206a2 | 957 | |
584892a6 RS |
958 | RELAX_USE_SECOND |
959 | Set if it has been decided that we should use the second | |
960 | sequence instead of the first. | |
961 | ||
962 | RELAX_SECOND_LONGER | |
963 | Set in the first variant frag if the macro's second implementation | |
964 | is longer than its first. This refers to the macro as a whole, | |
965 | not an individual relaxation. | |
966 | ||
967 | RELAX_NOMACRO | |
968 | Set in the first variant frag if the macro appeared in a .set nomacro | |
969 | block and if one alternative requires a warning but the other does not. | |
970 | ||
971 | RELAX_DELAY_SLOT | |
972 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
973 | delay slot. | |
4d7206a2 | 974 | |
df58fc94 RS |
975 | RELAX_DELAY_SLOT_16BIT |
976 | Like RELAX_DELAY_SLOT, but indicates that the delay slot requires a | |
977 | 16-bit instruction. | |
978 | ||
979 | RELAX_DELAY_SLOT_SIZE_FIRST | |
980 | Like RELAX_DELAY_SLOT, but indicates that the first implementation of | |
981 | the macro is of the wrong size for the branch delay slot. | |
982 | ||
983 | RELAX_DELAY_SLOT_SIZE_SECOND | |
984 | Like RELAX_DELAY_SLOT, but indicates that the second implementation of | |
985 | the macro is of the wrong size for the branch delay slot. | |
986 | ||
4d7206a2 RS |
987 | The frag's "opcode" points to the first fixup for relaxable code. |
988 | ||
989 | Relaxable macros are generated using a sequence such as: | |
990 | ||
991 | relax_start (SYMBOL); | |
992 | ... generate first expansion ... | |
993 | relax_switch (); | |
994 | ... generate second expansion ... | |
995 | relax_end (); | |
996 | ||
997 | The code and fixups for the unwanted alternative are discarded | |
998 | by md_convert_frag. */ | |
584892a6 | 999 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 1000 | |
584892a6 RS |
1001 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
1002 | #define RELAX_SECOND(X) ((X) & 0xff) | |
1003 | #define RELAX_USE_SECOND 0x10000 | |
1004 | #define RELAX_SECOND_LONGER 0x20000 | |
1005 | #define RELAX_NOMACRO 0x40000 | |
1006 | #define RELAX_DELAY_SLOT 0x80000 | |
df58fc94 RS |
1007 | #define RELAX_DELAY_SLOT_16BIT 0x100000 |
1008 | #define RELAX_DELAY_SLOT_SIZE_FIRST 0x200000 | |
1009 | #define RELAX_DELAY_SLOT_SIZE_SECOND 0x400000 | |
252b5132 | 1010 | |
4a6a3df4 AO |
1011 | /* Branch without likely bit. If label is out of range, we turn: |
1012 | ||
1013 | beq reg1, reg2, label | |
1014 | delay slot | |
1015 | ||
1016 | into | |
1017 | ||
1018 | bne reg1, reg2, 0f | |
1019 | nop | |
1020 | j label | |
1021 | 0: delay slot | |
1022 | ||
1023 | with the following opcode replacements: | |
1024 | ||
1025 | beq <-> bne | |
1026 | blez <-> bgtz | |
1027 | bltz <-> bgez | |
1028 | bc1f <-> bc1t | |
1029 | ||
1030 | bltzal <-> bgezal (with jal label instead of j label) | |
1031 | ||
1032 | Even though keeping the delay slot instruction in the delay slot of | |
1033 | the branch would be more efficient, it would be very tricky to do | |
1034 | correctly, because we'd have to introduce a variable frag *after* | |
1035 | the delay slot instruction, and expand that instead. Let's do it | |
1036 | the easy way for now, even if the branch-not-taken case now costs | |
1037 | one additional instruction. Out-of-range branches are not supposed | |
1038 | to be common, anyway. | |
1039 | ||
1040 | Branch likely. If label is out of range, we turn: | |
1041 | ||
1042 | beql reg1, reg2, label | |
1043 | delay slot (annulled if branch not taken) | |
1044 | ||
1045 | into | |
1046 | ||
1047 | beql reg1, reg2, 1f | |
1048 | nop | |
1049 | beql $0, $0, 2f | |
1050 | nop | |
1051 | 1: j[al] label | |
1052 | delay slot (executed only if branch taken) | |
1053 | 2: | |
1054 | ||
1055 | It would be possible to generate a shorter sequence by losing the | |
1056 | likely bit, generating something like: | |
b34976b6 | 1057 | |
4a6a3df4 AO |
1058 | bne reg1, reg2, 0f |
1059 | nop | |
1060 | j[al] label | |
1061 | delay slot (executed only if branch taken) | |
1062 | 0: | |
1063 | ||
1064 | beql -> bne | |
1065 | bnel -> beq | |
1066 | blezl -> bgtz | |
1067 | bgtzl -> blez | |
1068 | bltzl -> bgez | |
1069 | bgezl -> bltz | |
1070 | bc1fl -> bc1t | |
1071 | bc1tl -> bc1f | |
1072 | ||
1073 | bltzall -> bgezal (with jal label instead of j label) | |
1074 | bgezall -> bltzal (ditto) | |
1075 | ||
1076 | ||
1077 | but it's not clear that it would actually improve performance. */ | |
66b3e8da MR |
1078 | #define RELAX_BRANCH_ENCODE(at, uncond, likely, link, toofar) \ |
1079 | ((relax_substateT) \ | |
1080 | (0xc0000000 \ | |
1081 | | ((at) & 0x1f) \ | |
1082 | | ((toofar) ? 0x20 : 0) \ | |
1083 | | ((link) ? 0x40 : 0) \ | |
1084 | | ((likely) ? 0x80 : 0) \ | |
1085 | | ((uncond) ? 0x100 : 0))) | |
4a6a3df4 | 1086 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
66b3e8da MR |
1087 | #define RELAX_BRANCH_UNCOND(i) (((i) & 0x100) != 0) |
1088 | #define RELAX_BRANCH_LIKELY(i) (((i) & 0x80) != 0) | |
1089 | #define RELAX_BRANCH_LINK(i) (((i) & 0x40) != 0) | |
1090 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 0x20) != 0) | |
1091 | #define RELAX_BRANCH_AT(i) ((i) & 0x1f) | |
4a6a3df4 | 1092 | |
252b5132 RH |
1093 | /* For mips16 code, we use an entirely different form of relaxation. |
1094 | mips16 supports two versions of most instructions which take | |
1095 | immediate values: a small one which takes some small value, and a | |
1096 | larger one which takes a 16 bit value. Since branches also follow | |
1097 | this pattern, relaxing these values is required. | |
1098 | ||
1099 | We can assemble both mips16 and normal MIPS code in a single | |
1100 | object. Therefore, we need to support this type of relaxation at | |
1101 | the same time that we support the relaxation described above. We | |
1102 | use the high bit of the subtype field to distinguish these cases. | |
1103 | ||
1104 | The information we store for this type of relaxation is the | |
1105 | argument code found in the opcode file for this relocation, whether | |
1106 | the user explicitly requested a small or extended form, and whether | |
1107 | the relocation is in a jump or jal delay slot. That tells us the | |
1108 | size of the value, and how it should be stored. We also store | |
1109 | whether the fragment is considered to be extended or not. We also | |
1110 | store whether this is known to be a branch to a different section, | |
1111 | whether we have tried to relax this frag yet, and whether we have | |
1112 | ever extended a PC relative fragment because of a shift count. */ | |
1113 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
1114 | (0x80000000 \ | |
1115 | | ((type) & 0xff) \ | |
1116 | | ((small) ? 0x100 : 0) \ | |
1117 | | ((ext) ? 0x200 : 0) \ | |
1118 | | ((dslot) ? 0x400 : 0) \ | |
1119 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 1120 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
1121 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
1122 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
1123 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
1124 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
1125 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
1126 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
1127 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
1128 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
1129 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
1130 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
1131 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 | 1132 | |
df58fc94 RS |
1133 | /* For microMIPS code, we use relaxation similar to one we use for |
1134 | MIPS16 code. Some instructions that take immediate values support | |
1135 | two encodings: a small one which takes some small value, and a | |
1136 | larger one which takes a 16 bit value. As some branches also follow | |
1137 | this pattern, relaxing these values is required. | |
1138 | ||
1139 | We can assemble both microMIPS and normal MIPS code in a single | |
1140 | object. Therefore, we need to support this type of relaxation at | |
1141 | the same time that we support the relaxation described above. We | |
1142 | use one of the high bits of the subtype field to distinguish these | |
1143 | cases. | |
1144 | ||
1145 | The information we store for this type of relaxation is the argument | |
1146 | code found in the opcode file for this relocation, the register | |
40209cad MR |
1147 | selected as the assembler temporary, whether the branch is |
1148 | unconditional, whether it is compact, whether it stores the link | |
1149 | address implicitly in $ra, whether relaxation of out-of-range 32-bit | |
1150 | branches to a sequence of instructions is enabled, and whether the | |
1151 | displacement of a branch is too large to fit as an immediate argument | |
1152 | of a 16-bit and a 32-bit branch, respectively. */ | |
1153 | #define RELAX_MICROMIPS_ENCODE(type, at, uncond, compact, link, \ | |
1154 | relax32, toofar16, toofar32) \ | |
1155 | (0x40000000 \ | |
1156 | | ((type) & 0xff) \ | |
1157 | | (((at) & 0x1f) << 8) \ | |
1158 | | ((uncond) ? 0x2000 : 0) \ | |
1159 | | ((compact) ? 0x4000 : 0) \ | |
1160 | | ((link) ? 0x8000 : 0) \ | |
1161 | | ((relax32) ? 0x10000 : 0) \ | |
1162 | | ((toofar16) ? 0x20000 : 0) \ | |
1163 | | ((toofar32) ? 0x40000 : 0)) | |
df58fc94 RS |
1164 | #define RELAX_MICROMIPS_P(i) (((i) & 0xc0000000) == 0x40000000) |
1165 | #define RELAX_MICROMIPS_TYPE(i) ((i) & 0xff) | |
1166 | #define RELAX_MICROMIPS_AT(i) (((i) >> 8) & 0x1f) | |
40209cad MR |
1167 | #define RELAX_MICROMIPS_UNCOND(i) (((i) & 0x2000) != 0) |
1168 | #define RELAX_MICROMIPS_COMPACT(i) (((i) & 0x4000) != 0) | |
1169 | #define RELAX_MICROMIPS_LINK(i) (((i) & 0x8000) != 0) | |
1170 | #define RELAX_MICROMIPS_RELAX32(i) (((i) & 0x10000) != 0) | |
1171 | ||
1172 | #define RELAX_MICROMIPS_TOOFAR16(i) (((i) & 0x20000) != 0) | |
1173 | #define RELAX_MICROMIPS_MARK_TOOFAR16(i) ((i) | 0x20000) | |
1174 | #define RELAX_MICROMIPS_CLEAR_TOOFAR16(i) ((i) & ~0x20000) | |
1175 | #define RELAX_MICROMIPS_TOOFAR32(i) (((i) & 0x40000) != 0) | |
1176 | #define RELAX_MICROMIPS_MARK_TOOFAR32(i) ((i) | 0x40000) | |
1177 | #define RELAX_MICROMIPS_CLEAR_TOOFAR32(i) ((i) & ~0x40000) | |
df58fc94 | 1178 | |
43c0598f RS |
1179 | /* Sign-extend 16-bit value X. */ |
1180 | #define SEXT_16BIT(X) ((((X) + 0x8000) & 0xffff) - 0x8000) | |
1181 | ||
885add95 CD |
1182 | /* Is the given value a sign-extended 32-bit value? */ |
1183 | #define IS_SEXT_32BIT_NUM(x) \ | |
1184 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
1185 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
1186 | ||
1187 | /* Is the given value a sign-extended 16-bit value? */ | |
1188 | #define IS_SEXT_16BIT_NUM(x) \ | |
1189 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
1190 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
1191 | ||
df58fc94 RS |
1192 | /* Is the given value a sign-extended 12-bit value? */ |
1193 | #define IS_SEXT_12BIT_NUM(x) \ | |
1194 | (((((x) & 0xfff) ^ 0x800LL) - 0x800LL) == (x)) | |
1195 | ||
2051e8c4 MR |
1196 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
1197 | #define IS_ZEXT_32BIT_NUM(x) \ | |
1198 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
1199 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
1200 | ||
bf12938e RS |
1201 | /* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in |
1202 | VALUE << SHIFT. VALUE is evaluated exactly once. */ | |
1203 | #define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \ | |
1204 | (STRUCT) = (((STRUCT) & ~((MASK) << (SHIFT))) \ | |
1205 | | (((VALUE) & (MASK)) << (SHIFT))) | |
1206 | ||
1207 | /* Extract bits MASK << SHIFT from STRUCT and shift them right | |
1208 | SHIFT places. */ | |
1209 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
1210 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
1211 | ||
1212 | /* Change INSN's opcode so that the operand given by FIELD has value VALUE. | |
1213 | INSN is a mips_cl_insn structure and VALUE is evaluated exactly once. | |
1214 | ||
1215 | include/opcode/mips.h specifies operand fields using the macros | |
1216 | OP_MASK_<FIELD> and OP_SH_<FIELD>. The MIPS16 equivalents start | |
1217 | with "MIPS16OP" instead of "OP". */ | |
df58fc94 RS |
1218 | #define INSERT_OPERAND(MICROMIPS, FIELD, INSN, VALUE) \ |
1219 | do \ | |
1220 | if (!(MICROMIPS)) \ | |
1221 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1222 | OP_MASK_##FIELD, OP_SH_##FIELD); \ | |
1223 | else \ | |
1224 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1225 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD); \ | |
1226 | while (0) | |
bf12938e RS |
1227 | #define MIPS16_INSERT_OPERAND(FIELD, INSN, VALUE) \ |
1228 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1229 | MIPS16OP_MASK_##FIELD, MIPS16OP_SH_##FIELD) | |
1230 | ||
1231 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ | |
df58fc94 RS |
1232 | #define EXTRACT_OPERAND(MICROMIPS, FIELD, INSN) \ |
1233 | (!(MICROMIPS) \ | |
1234 | ? EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) \ | |
1235 | : EXTRACT_BITS ((INSN).insn_opcode, \ | |
1236 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD)) | |
bf12938e RS |
1237 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ |
1238 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
1239 | MIPS16OP_MASK_##FIELD, \ | |
1240 | MIPS16OP_SH_##FIELD) | |
5c04167a RS |
1241 | |
1242 | /* The MIPS16 EXTEND opcode, shifted left 16 places. */ | |
1243 | #define MIPS16_EXTEND (0xf000U << 16) | |
4d7206a2 | 1244 | \f |
df58fc94 RS |
1245 | /* Whether or not we are emitting a branch-likely macro. */ |
1246 | static bfd_boolean emit_branch_likely_macro = FALSE; | |
1247 | ||
4d7206a2 RS |
1248 | /* Global variables used when generating relaxable macros. See the |
1249 | comment above RELAX_ENCODE for more details about how relaxation | |
1250 | is used. */ | |
1251 | static struct { | |
1252 | /* 0 if we're not emitting a relaxable macro. | |
1253 | 1 if we're emitting the first of the two relaxation alternatives. | |
1254 | 2 if we're emitting the second alternative. */ | |
1255 | int sequence; | |
1256 | ||
1257 | /* The first relaxable fixup in the current frag. (In other words, | |
1258 | the first fixup that refers to relaxable code.) */ | |
1259 | fixS *first_fixup; | |
1260 | ||
1261 | /* sizes[0] says how many bytes of the first alternative are stored in | |
1262 | the current frag. Likewise sizes[1] for the second alternative. */ | |
1263 | unsigned int sizes[2]; | |
1264 | ||
1265 | /* The symbol on which the choice of sequence depends. */ | |
1266 | symbolS *symbol; | |
1267 | } mips_relax; | |
252b5132 | 1268 | \f |
584892a6 RS |
1269 | /* Global variables used to decide whether a macro needs a warning. */ |
1270 | static struct { | |
1271 | /* True if the macro is in a branch delay slot. */ | |
1272 | bfd_boolean delay_slot_p; | |
1273 | ||
df58fc94 RS |
1274 | /* Set to the length in bytes required if the macro is in a delay slot |
1275 | that requires a specific length of instruction, otherwise zero. */ | |
1276 | unsigned int delay_slot_length; | |
1277 | ||
584892a6 RS |
1278 | /* For relaxable macros, sizes[0] is the length of the first alternative |
1279 | in bytes and sizes[1] is the length of the second alternative. | |
1280 | For non-relaxable macros, both elements give the length of the | |
1281 | macro in bytes. */ | |
1282 | unsigned int sizes[2]; | |
1283 | ||
df58fc94 RS |
1284 | /* For relaxable macros, first_insn_sizes[0] is the length of the first |
1285 | instruction of the first alternative in bytes and first_insn_sizes[1] | |
1286 | is the length of the first instruction of the second alternative. | |
1287 | For non-relaxable macros, both elements give the length of the first | |
1288 | instruction in bytes. | |
1289 | ||
1290 | Set to zero if we haven't yet seen the first instruction. */ | |
1291 | unsigned int first_insn_sizes[2]; | |
1292 | ||
1293 | /* For relaxable macros, insns[0] is the number of instructions for the | |
1294 | first alternative and insns[1] is the number of instructions for the | |
1295 | second alternative. | |
1296 | ||
1297 | For non-relaxable macros, both elements give the number of | |
1298 | instructions for the macro. */ | |
1299 | unsigned int insns[2]; | |
1300 | ||
584892a6 RS |
1301 | /* The first variant frag for this macro. */ |
1302 | fragS *first_frag; | |
1303 | } mips_macro_warning; | |
1304 | \f | |
252b5132 RH |
1305 | /* Prototypes for static functions. */ |
1306 | ||
17a2f251 | 1307 | #define internalError() \ |
252b5132 | 1308 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) |
252b5132 RH |
1309 | |
1310 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
1311 | ||
b34976b6 | 1312 | static void append_insn |
df58fc94 RS |
1313 | (struct mips_cl_insn *, expressionS *, bfd_reloc_code_real_type *, |
1314 | bfd_boolean expansionp); | |
7d10b47d | 1315 | static void mips_no_prev_insn (void); |
c67a084a | 1316 | static void macro_build (expressionS *, const char *, const char *, ...); |
b34976b6 | 1317 | static void mips16_macro_build |
03ea81db | 1318 | (expressionS *, const char *, const char *, va_list *); |
67c0d1eb | 1319 | static void load_register (int, expressionS *, int); |
584892a6 RS |
1320 | static void macro_start (void); |
1321 | static void macro_end (void); | |
17a2f251 TS |
1322 | static void macro (struct mips_cl_insn * ip); |
1323 | static void mips16_macro (struct mips_cl_insn * ip); | |
17a2f251 TS |
1324 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
1325 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 1326 | static void mips16_immed |
43c0598f RS |
1327 | (char *, unsigned int, int, bfd_reloc_code_real_type, offsetT, |
1328 | unsigned int, unsigned long *); | |
5e0116d5 | 1329 | static size_t my_getSmallExpression |
17a2f251 TS |
1330 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1331 | static void my_getExpression (expressionS *, char *); | |
1332 | static void s_align (int); | |
1333 | static void s_change_sec (int); | |
1334 | static void s_change_section (int); | |
1335 | static void s_cons (int); | |
1336 | static void s_float_cons (int); | |
1337 | static void s_mips_globl (int); | |
1338 | static void s_option (int); | |
1339 | static void s_mipsset (int); | |
1340 | static void s_abicalls (int); | |
1341 | static void s_cpload (int); | |
1342 | static void s_cpsetup (int); | |
1343 | static void s_cplocal (int); | |
1344 | static void s_cprestore (int); | |
1345 | static void s_cpreturn (int); | |
741d6ea8 JM |
1346 | static void s_dtprelword (int); |
1347 | static void s_dtpreldword (int); | |
d0f13682 CLT |
1348 | static void s_tprelword (int); |
1349 | static void s_tpreldword (int); | |
17a2f251 TS |
1350 | static void s_gpvalue (int); |
1351 | static void s_gpword (int); | |
1352 | static void s_gpdword (int); | |
1353 | static void s_cpadd (int); | |
1354 | static void s_insn (int); | |
1355 | static void md_obj_begin (void); | |
1356 | static void md_obj_end (void); | |
1357 | static void s_mips_ent (int); | |
1358 | static void s_mips_end (int); | |
1359 | static void s_mips_frame (int); | |
1360 | static void s_mips_mask (int reg_type); | |
1361 | static void s_mips_stab (int); | |
1362 | static void s_mips_weakext (int); | |
1363 | static void s_mips_file (int); | |
1364 | static void s_mips_loc (int); | |
1365 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1366 | static int relaxed_branch_length (fragS *, asection *, int); |
17a2f251 | 1367 | static int validate_mips_insn (const struct mips_opcode *); |
df58fc94 RS |
1368 | static int validate_micromips_insn (const struct mips_opcode *); |
1369 | static int relaxed_micromips_16bit_branch_length (fragS *, asection *, int); | |
1370 | static int relaxed_micromips_32bit_branch_length (fragS *, asection *, int); | |
e7af610e NC |
1371 | |
1372 | /* Table and functions used to map between CPU/ISA names, and | |
1373 | ISA levels, and CPU numbers. */ | |
1374 | ||
e972090a NC |
1375 | struct mips_cpu_info |
1376 | { | |
e7af610e | 1377 | const char *name; /* CPU or ISA name. */ |
ad3fea08 | 1378 | int flags; /* ASEs available, or ISA flag. */ |
e7af610e NC |
1379 | int isa; /* ISA level. */ |
1380 | int cpu; /* CPU number (default CPU if ISA). */ | |
1381 | }; | |
1382 | ||
ad3fea08 TS |
1383 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
1384 | #define MIPS_CPU_ASE_SMARTMIPS 0x0002 /* CPU implements SmartMIPS ASE */ | |
1385 | #define MIPS_CPU_ASE_DSP 0x0004 /* CPU implements DSP ASE */ | |
1386 | #define MIPS_CPU_ASE_MT 0x0008 /* CPU implements MT ASE */ | |
1387 | #define MIPS_CPU_ASE_MIPS3D 0x0010 /* CPU implements MIPS-3D ASE */ | |
1388 | #define MIPS_CPU_ASE_MDMX 0x0020 /* CPU implements MDMX ASE */ | |
8b082fb1 | 1389 | #define MIPS_CPU_ASE_DSPR2 0x0040 /* CPU implements DSP R2 ASE */ |
dec0624d | 1390 | #define MIPS_CPU_ASE_MCU 0x0080 /* CPU implements MCU ASE */ |
ad3fea08 | 1391 | |
17a2f251 TS |
1392 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1393 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1394 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 RH |
1395 | \f |
1396 | /* Pseudo-op table. | |
1397 | ||
1398 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1399 | should be defined here, but are currently unsupported: .alias, | |
1400 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1401 | ||
1402 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1403 | specific to the type of debugging information being generated, and | |
1404 | should be defined by the object format: .aent, .begin, .bend, | |
1405 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1406 | .vreg. | |
1407 | ||
1408 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1409 | not MIPS CPU specific, but are also not specific to the object file | |
1410 | format. This file is probably the best place to define them, but | |
d84bcf09 | 1411 | they are not currently supported: .asm0, .endr, .lab, .struct. */ |
252b5132 | 1412 | |
e972090a NC |
1413 | static const pseudo_typeS mips_pseudo_table[] = |
1414 | { | |
beae10d5 | 1415 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1416 | {"option", s_option, 0}, |
1417 | {"set", s_mipsset, 0}, | |
1418 | {"rdata", s_change_sec, 'r'}, | |
1419 | {"sdata", s_change_sec, 's'}, | |
1420 | {"livereg", s_ignore, 0}, | |
1421 | {"abicalls", s_abicalls, 0}, | |
1422 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1423 | {"cpsetup", s_cpsetup, 0}, |
1424 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1425 | {"cprestore", s_cprestore, 0}, |
6478892d | 1426 | {"cpreturn", s_cpreturn, 0}, |
741d6ea8 JM |
1427 | {"dtprelword", s_dtprelword, 0}, |
1428 | {"dtpreldword", s_dtpreldword, 0}, | |
d0f13682 CLT |
1429 | {"tprelword", s_tprelword, 0}, |
1430 | {"tpreldword", s_tpreldword, 0}, | |
6478892d | 1431 | {"gpvalue", s_gpvalue, 0}, |
252b5132 | 1432 | {"gpword", s_gpword, 0}, |
10181a0d | 1433 | {"gpdword", s_gpdword, 0}, |
252b5132 RH |
1434 | {"cpadd", s_cpadd, 0}, |
1435 | {"insn", s_insn, 0}, | |
1436 | ||
beae10d5 | 1437 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 | 1438 | chips. */ |
38a57ae7 | 1439 | {"asciiz", stringer, 8 + 1}, |
252b5132 RH |
1440 | {"bss", s_change_sec, 'b'}, |
1441 | {"err", s_err, 0}, | |
1442 | {"half", s_cons, 1}, | |
1443 | {"dword", s_cons, 3}, | |
1444 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1445 | {"origin", s_org, 0}, |
1446 | {"repeat", s_rept, 0}, | |
252b5132 | 1447 | |
998b3c36 MR |
1448 | /* For MIPS this is non-standard, but we define it for consistency. */ |
1449 | {"sbss", s_change_sec, 'B'}, | |
1450 | ||
beae10d5 | 1451 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1452 | here for one reason or another. */ |
1453 | {"align", s_align, 0}, | |
1454 | {"byte", s_cons, 0}, | |
1455 | {"data", s_change_sec, 'd'}, | |
1456 | {"double", s_float_cons, 'd'}, | |
1457 | {"float", s_float_cons, 'f'}, | |
1458 | {"globl", s_mips_globl, 0}, | |
1459 | {"global", s_mips_globl, 0}, | |
1460 | {"hword", s_cons, 1}, | |
1461 | {"int", s_cons, 2}, | |
1462 | {"long", s_cons, 2}, | |
1463 | {"octa", s_cons, 4}, | |
1464 | {"quad", s_cons, 3}, | |
cca86cc8 | 1465 | {"section", s_change_section, 0}, |
252b5132 RH |
1466 | {"short", s_cons, 1}, |
1467 | {"single", s_float_cons, 'f'}, | |
1468 | {"stabn", s_mips_stab, 'n'}, | |
1469 | {"text", s_change_sec, 't'}, | |
1470 | {"word", s_cons, 2}, | |
add56521 | 1471 | |
add56521 | 1472 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1473 | |
43841e91 | 1474 | { NULL, NULL, 0 }, |
252b5132 RH |
1475 | }; |
1476 | ||
e972090a NC |
1477 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1478 | { | |
beae10d5 KH |
1479 | /* These pseudo-ops should be defined by the object file format. |
1480 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1481 | {"aent", s_mips_ent, 1}, |
1482 | {"bgnb", s_ignore, 0}, | |
1483 | {"end", s_mips_end, 0}, | |
1484 | {"endb", s_ignore, 0}, | |
1485 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1486 | {"file", s_mips_file, 0}, |
252b5132 RH |
1487 | {"fmask", s_mips_mask, 'F'}, |
1488 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1489 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1490 | {"mask", s_mips_mask, 'R'}, |
1491 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1492 | { NULL, NULL, 0 }, |
252b5132 RH |
1493 | }; |
1494 | ||
3ae8dd8d MR |
1495 | /* Export the ABI address size for use by TC_ADDRESS_BYTES for the |
1496 | purpose of the `.dc.a' internal pseudo-op. */ | |
1497 | ||
1498 | int | |
1499 | mips_address_bytes (void) | |
1500 | { | |
1501 | return HAVE_64BIT_ADDRESSES ? 8 : 4; | |
1502 | } | |
1503 | ||
17a2f251 | 1504 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1505 | |
1506 | void | |
17a2f251 | 1507 | mips_pop_insert (void) |
252b5132 RH |
1508 | { |
1509 | pop_insert (mips_pseudo_table); | |
1510 | if (! ECOFF_DEBUGGING) | |
1511 | pop_insert (mips_nonecoff_pseudo_table); | |
1512 | } | |
1513 | \f | |
1514 | /* Symbols labelling the current insn. */ | |
1515 | ||
e972090a NC |
1516 | struct insn_label_list |
1517 | { | |
252b5132 RH |
1518 | struct insn_label_list *next; |
1519 | symbolS *label; | |
1520 | }; | |
1521 | ||
252b5132 | 1522 | static struct insn_label_list *free_insn_labels; |
742a56fe | 1523 | #define label_list tc_segment_info_data.labels |
252b5132 | 1524 | |
17a2f251 | 1525 | static void mips_clear_insn_labels (void); |
df58fc94 RS |
1526 | static void mips_mark_labels (void); |
1527 | static void mips_compressed_mark_labels (void); | |
252b5132 RH |
1528 | |
1529 | static inline void | |
17a2f251 | 1530 | mips_clear_insn_labels (void) |
252b5132 RH |
1531 | { |
1532 | register struct insn_label_list **pl; | |
a8dbcb85 | 1533 | segment_info_type *si; |
252b5132 | 1534 | |
a8dbcb85 TS |
1535 | if (now_seg) |
1536 | { | |
1537 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1538 | ; | |
1539 | ||
1540 | si = seg_info (now_seg); | |
1541 | *pl = si->label_list; | |
1542 | si->label_list = NULL; | |
1543 | } | |
252b5132 | 1544 | } |
a8dbcb85 | 1545 | |
df58fc94 RS |
1546 | /* Mark instruction labels in MIPS16/microMIPS mode. */ |
1547 | ||
1548 | static inline void | |
1549 | mips_mark_labels (void) | |
1550 | { | |
1551 | if (HAVE_CODE_COMPRESSION) | |
1552 | mips_compressed_mark_labels (); | |
1553 | } | |
252b5132 RH |
1554 | \f |
1555 | static char *expr_end; | |
1556 | ||
1557 | /* Expressions which appear in instructions. These are set by | |
1558 | mips_ip. */ | |
1559 | ||
1560 | static expressionS imm_expr; | |
5f74bc13 | 1561 | static expressionS imm2_expr; |
252b5132 RH |
1562 | static expressionS offset_expr; |
1563 | ||
1564 | /* Relocs associated with imm_expr and offset_expr. */ | |
1565 | ||
f6688943 TS |
1566 | static bfd_reloc_code_real_type imm_reloc[3] |
1567 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
1568 | static bfd_reloc_code_real_type offset_reloc[3] | |
1569 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1570 | |
df58fc94 RS |
1571 | /* This is set to the resulting size of the instruction to be produced |
1572 | by mips16_ip if an explicit extension is used or by mips_ip if an | |
1573 | explicit size is supplied. */ | |
252b5132 | 1574 | |
df58fc94 | 1575 | static unsigned int forced_insn_length; |
252b5132 | 1576 | |
e1b47bd5 RS |
1577 | /* True if we are assembling an instruction. All dot symbols defined during |
1578 | this time should be treated as code labels. */ | |
1579 | ||
1580 | static bfd_boolean mips_assembling_insn; | |
1581 | ||
7ed4a06a | 1582 | #ifdef OBJ_ELF |
ecb4347a DJ |
1583 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1584 | ECOFF debugging. */ | |
252b5132 RH |
1585 | |
1586 | static segT pdr_seg; | |
7ed4a06a | 1587 | #endif |
252b5132 | 1588 | |
e013f690 TS |
1589 | /* The default target format to use. */ |
1590 | ||
aeffff67 RS |
1591 | #if defined (TE_FreeBSD) |
1592 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips-freebsd" | |
1593 | #elif defined (TE_TMIPS) | |
1594 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips" | |
1595 | #else | |
1596 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX ENDIAN "mips" | |
1597 | #endif | |
1598 | ||
e013f690 | 1599 | const char * |
17a2f251 | 1600 | mips_target_format (void) |
e013f690 TS |
1601 | { |
1602 | switch (OUTPUT_FLAVOR) | |
1603 | { | |
e013f690 TS |
1604 | case bfd_target_ecoff_flavour: |
1605 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
1606 | case bfd_target_coff_flavour: | |
1607 | return "pe-mips"; | |
1608 | case bfd_target_elf_flavour: | |
0a44bf69 RS |
1609 | #ifdef TE_VXWORKS |
1610 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1611 | return (target_big_endian | |
1612 | ? "elf32-bigmips-vxworks" | |
1613 | : "elf32-littlemips-vxworks"); | |
1614 | #endif | |
e013f690 | 1615 | return (target_big_endian |
cfe86eaa | 1616 | ? (HAVE_64BIT_OBJECTS |
aeffff67 | 1617 | ? ELF_TARGET ("elf64-", "big") |
cfe86eaa | 1618 | : (HAVE_NEWABI |
aeffff67 RS |
1619 | ? ELF_TARGET ("elf32-n", "big") |
1620 | : ELF_TARGET ("elf32-", "big"))) | |
cfe86eaa | 1621 | : (HAVE_64BIT_OBJECTS |
aeffff67 | 1622 | ? ELF_TARGET ("elf64-", "little") |
cfe86eaa | 1623 | : (HAVE_NEWABI |
aeffff67 RS |
1624 | ? ELF_TARGET ("elf32-n", "little") |
1625 | : ELF_TARGET ("elf32-", "little")))); | |
e013f690 TS |
1626 | default: |
1627 | abort (); | |
1628 | return NULL; | |
1629 | } | |
1630 | } | |
1631 | ||
df58fc94 RS |
1632 | /* Return the length of a microMIPS instruction in bytes. If bits of |
1633 | the mask beyond the low 16 are 0, then it is a 16-bit instruction. | |
1634 | Otherwise assume a 32-bit instruction; 48-bit instructions (0x1f | |
1635 | major opcode) will require further modifications to the opcode | |
1636 | table. */ | |
1637 | ||
1638 | static inline unsigned int | |
1639 | micromips_insn_length (const struct mips_opcode *mo) | |
1640 | { | |
1641 | return (mo->mask >> 16) == 0 ? 2 : 4; | |
1642 | } | |
1643 | ||
5c04167a RS |
1644 | /* Return the length of MIPS16 instruction OPCODE. */ |
1645 | ||
1646 | static inline unsigned int | |
1647 | mips16_opcode_length (unsigned long opcode) | |
1648 | { | |
1649 | return (opcode >> 16) == 0 ? 2 : 4; | |
1650 | } | |
1651 | ||
1e915849 RS |
1652 | /* Return the length of instruction INSN. */ |
1653 | ||
1654 | static inline unsigned int | |
1655 | insn_length (const struct mips_cl_insn *insn) | |
1656 | { | |
df58fc94 RS |
1657 | if (mips_opts.micromips) |
1658 | return micromips_insn_length (insn->insn_mo); | |
1659 | else if (mips_opts.mips16) | |
5c04167a | 1660 | return mips16_opcode_length (insn->insn_opcode); |
df58fc94 | 1661 | else |
1e915849 | 1662 | return 4; |
1e915849 RS |
1663 | } |
1664 | ||
1665 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
1666 | ||
1667 | static void | |
1668 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
1669 | { | |
1670 | size_t i; | |
1671 | ||
1672 | insn->insn_mo = mo; | |
1e915849 RS |
1673 | insn->insn_opcode = mo->match; |
1674 | insn->frag = NULL; | |
1675 | insn->where = 0; | |
1676 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1677 | insn->fixp[i] = NULL; | |
1678 | insn->fixed_p = (mips_opts.noreorder > 0); | |
1679 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
1680 | insn->mips16_absolute_jump_p = 0; | |
15be625d | 1681 | insn->complete_p = 0; |
1e915849 RS |
1682 | } |
1683 | ||
df58fc94 | 1684 | /* Record the current MIPS16/microMIPS mode in now_seg. */ |
742a56fe RS |
1685 | |
1686 | static void | |
df58fc94 | 1687 | mips_record_compressed_mode (void) |
742a56fe RS |
1688 | { |
1689 | segment_info_type *si; | |
1690 | ||
1691 | si = seg_info (now_seg); | |
1692 | if (si->tc_segment_info_data.mips16 != mips_opts.mips16) | |
1693 | si->tc_segment_info_data.mips16 = mips_opts.mips16; | |
df58fc94 RS |
1694 | if (si->tc_segment_info_data.micromips != mips_opts.micromips) |
1695 | si->tc_segment_info_data.micromips = mips_opts.micromips; | |
742a56fe RS |
1696 | } |
1697 | ||
4d68580a RS |
1698 | /* Read a standard MIPS instruction from BUF. */ |
1699 | ||
1700 | static unsigned long | |
1701 | read_insn (char *buf) | |
1702 | { | |
1703 | if (target_big_endian) | |
1704 | return bfd_getb32 ((bfd_byte *) buf); | |
1705 | else | |
1706 | return bfd_getl32 ((bfd_byte *) buf); | |
1707 | } | |
1708 | ||
1709 | /* Write standard MIPS instruction INSN to BUF. Return a pointer to | |
1710 | the next byte. */ | |
1711 | ||
1712 | static char * | |
1713 | write_insn (char *buf, unsigned int insn) | |
1714 | { | |
1715 | md_number_to_chars (buf, insn, 4); | |
1716 | return buf + 4; | |
1717 | } | |
1718 | ||
1719 | /* Read a microMIPS or MIPS16 opcode from BUF, given that it | |
1720 | has length LENGTH. */ | |
1721 | ||
1722 | static unsigned long | |
1723 | read_compressed_insn (char *buf, unsigned int length) | |
1724 | { | |
1725 | unsigned long insn; | |
1726 | unsigned int i; | |
1727 | ||
1728 | insn = 0; | |
1729 | for (i = 0; i < length; i += 2) | |
1730 | { | |
1731 | insn <<= 16; | |
1732 | if (target_big_endian) | |
1733 | insn |= bfd_getb16 ((char *) buf); | |
1734 | else | |
1735 | insn |= bfd_getl16 ((char *) buf); | |
1736 | buf += 2; | |
1737 | } | |
1738 | return insn; | |
1739 | } | |
1740 | ||
5c04167a RS |
1741 | /* Write microMIPS or MIPS16 instruction INSN to BUF, given that the |
1742 | instruction is LENGTH bytes long. Return a pointer to the next byte. */ | |
1743 | ||
1744 | static char * | |
1745 | write_compressed_insn (char *buf, unsigned int insn, unsigned int length) | |
1746 | { | |
1747 | unsigned int i; | |
1748 | ||
1749 | for (i = 0; i < length; i += 2) | |
1750 | md_number_to_chars (buf + i, insn >> ((length - i - 2) * 8), 2); | |
1751 | return buf + length; | |
1752 | } | |
1753 | ||
1e915849 RS |
1754 | /* Install INSN at the location specified by its "frag" and "where" fields. */ |
1755 | ||
1756 | static void | |
1757 | install_insn (const struct mips_cl_insn *insn) | |
1758 | { | |
1759 | char *f = insn->frag->fr_literal + insn->where; | |
5c04167a RS |
1760 | if (HAVE_CODE_COMPRESSION) |
1761 | write_compressed_insn (f, insn->insn_opcode, insn_length (insn)); | |
1e915849 | 1762 | else |
4d68580a | 1763 | write_insn (f, insn->insn_opcode); |
df58fc94 | 1764 | mips_record_compressed_mode (); |
1e915849 RS |
1765 | } |
1766 | ||
1767 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
1768 | and install the opcode in the new location. */ | |
1769 | ||
1770 | static void | |
1771 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
1772 | { | |
1773 | size_t i; | |
1774 | ||
1775 | insn->frag = frag; | |
1776 | insn->where = where; | |
1777 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1778 | if (insn->fixp[i] != NULL) | |
1779 | { | |
1780 | insn->fixp[i]->fx_frag = frag; | |
1781 | insn->fixp[i]->fx_where = where; | |
1782 | } | |
1783 | install_insn (insn); | |
1784 | } | |
1785 | ||
1786 | /* Add INSN to the end of the output. */ | |
1787 | ||
1788 | static void | |
1789 | add_fixed_insn (struct mips_cl_insn *insn) | |
1790 | { | |
1791 | char *f = frag_more (insn_length (insn)); | |
1792 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
1793 | } | |
1794 | ||
1795 | /* Start a variant frag and move INSN to the start of the variant part, | |
1796 | marking it as fixed. The other arguments are as for frag_var. */ | |
1797 | ||
1798 | static void | |
1799 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
1800 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
1801 | { | |
1802 | frag_grow (max_chars); | |
1803 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
1804 | insn->fixed_p = 1; | |
1805 | frag_var (rs_machine_dependent, max_chars, var, | |
1806 | subtype, symbol, offset, NULL); | |
1807 | } | |
1808 | ||
1809 | /* Insert N copies of INSN into the history buffer, starting at | |
1810 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
1811 | ||
1812 | static void | |
1813 | insert_into_history (unsigned int first, unsigned int n, | |
1814 | const struct mips_cl_insn *insn) | |
1815 | { | |
1816 | if (mips_relax.sequence != 2) | |
1817 | { | |
1818 | unsigned int i; | |
1819 | ||
1820 | for (i = ARRAY_SIZE (history); i-- > first;) | |
1821 | if (i >= first + n) | |
1822 | history[i] = history[i - n]; | |
1823 | else | |
1824 | history[i] = *insn; | |
1825 | } | |
1826 | } | |
1827 | ||
71400594 RS |
1828 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
1829 | the idea is to make it obvious at a glance that each errata is | |
1830 | included. */ | |
1831 | ||
1832 | static void | |
1833 | init_vr4120_conflicts (void) | |
1834 | { | |
1835 | #define CONFLICT(FIRST, SECOND) \ | |
1836 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
1837 | ||
1838 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
1839 | CONFLICT (MACC, DIV); | |
1840 | CONFLICT (DMACC, DIV); | |
1841 | ||
1842 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
1843 | CONFLICT (DMULT, DMULT); | |
1844 | CONFLICT (DMULT, DMACC); | |
1845 | CONFLICT (DMACC, DMULT); | |
1846 | CONFLICT (DMACC, DMACC); | |
1847 | ||
1848 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
1849 | CONFLICT (MACC, MTHILO); | |
1850 | CONFLICT (DMACC, MTHILO); | |
1851 | ||
1852 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
1853 | instruction is executed immediately after a MACC or DMACC | |
1854 | instruction, the result of [either instruction] is incorrect." */ | |
1855 | CONFLICT (MACC, MULT); | |
1856 | CONFLICT (MACC, DMULT); | |
1857 | CONFLICT (DMACC, MULT); | |
1858 | CONFLICT (DMACC, DMULT); | |
1859 | ||
1860 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
1861 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
1862 | DDIV or DDIVU instruction, the result of the MACC or | |
1863 | DMACC instruction is incorrect.". */ | |
1864 | CONFLICT (DMULT, MACC); | |
1865 | CONFLICT (DMULT, DMACC); | |
1866 | CONFLICT (DIV, MACC); | |
1867 | CONFLICT (DIV, DMACC); | |
1868 | ||
1869 | #undef CONFLICT | |
1870 | } | |
1871 | ||
707bfff6 TS |
1872 | struct regname { |
1873 | const char *name; | |
1874 | unsigned int num; | |
1875 | }; | |
1876 | ||
1877 | #define RTYPE_MASK 0x1ff00 | |
1878 | #define RTYPE_NUM 0x00100 | |
1879 | #define RTYPE_FPU 0x00200 | |
1880 | #define RTYPE_FCC 0x00400 | |
1881 | #define RTYPE_VEC 0x00800 | |
1882 | #define RTYPE_GP 0x01000 | |
1883 | #define RTYPE_CP0 0x02000 | |
1884 | #define RTYPE_PC 0x04000 | |
1885 | #define RTYPE_ACC 0x08000 | |
1886 | #define RTYPE_CCC 0x10000 | |
1887 | #define RNUM_MASK 0x000ff | |
1888 | #define RWARN 0x80000 | |
1889 | ||
1890 | #define GENERIC_REGISTER_NUMBERS \ | |
1891 | {"$0", RTYPE_NUM | 0}, \ | |
1892 | {"$1", RTYPE_NUM | 1}, \ | |
1893 | {"$2", RTYPE_NUM | 2}, \ | |
1894 | {"$3", RTYPE_NUM | 3}, \ | |
1895 | {"$4", RTYPE_NUM | 4}, \ | |
1896 | {"$5", RTYPE_NUM | 5}, \ | |
1897 | {"$6", RTYPE_NUM | 6}, \ | |
1898 | {"$7", RTYPE_NUM | 7}, \ | |
1899 | {"$8", RTYPE_NUM | 8}, \ | |
1900 | {"$9", RTYPE_NUM | 9}, \ | |
1901 | {"$10", RTYPE_NUM | 10}, \ | |
1902 | {"$11", RTYPE_NUM | 11}, \ | |
1903 | {"$12", RTYPE_NUM | 12}, \ | |
1904 | {"$13", RTYPE_NUM | 13}, \ | |
1905 | {"$14", RTYPE_NUM | 14}, \ | |
1906 | {"$15", RTYPE_NUM | 15}, \ | |
1907 | {"$16", RTYPE_NUM | 16}, \ | |
1908 | {"$17", RTYPE_NUM | 17}, \ | |
1909 | {"$18", RTYPE_NUM | 18}, \ | |
1910 | {"$19", RTYPE_NUM | 19}, \ | |
1911 | {"$20", RTYPE_NUM | 20}, \ | |
1912 | {"$21", RTYPE_NUM | 21}, \ | |
1913 | {"$22", RTYPE_NUM | 22}, \ | |
1914 | {"$23", RTYPE_NUM | 23}, \ | |
1915 | {"$24", RTYPE_NUM | 24}, \ | |
1916 | {"$25", RTYPE_NUM | 25}, \ | |
1917 | {"$26", RTYPE_NUM | 26}, \ | |
1918 | {"$27", RTYPE_NUM | 27}, \ | |
1919 | {"$28", RTYPE_NUM | 28}, \ | |
1920 | {"$29", RTYPE_NUM | 29}, \ | |
1921 | {"$30", RTYPE_NUM | 30}, \ | |
1922 | {"$31", RTYPE_NUM | 31} | |
1923 | ||
1924 | #define FPU_REGISTER_NAMES \ | |
1925 | {"$f0", RTYPE_FPU | 0}, \ | |
1926 | {"$f1", RTYPE_FPU | 1}, \ | |
1927 | {"$f2", RTYPE_FPU | 2}, \ | |
1928 | {"$f3", RTYPE_FPU | 3}, \ | |
1929 | {"$f4", RTYPE_FPU | 4}, \ | |
1930 | {"$f5", RTYPE_FPU | 5}, \ | |
1931 | {"$f6", RTYPE_FPU | 6}, \ | |
1932 | {"$f7", RTYPE_FPU | 7}, \ | |
1933 | {"$f8", RTYPE_FPU | 8}, \ | |
1934 | {"$f9", RTYPE_FPU | 9}, \ | |
1935 | {"$f10", RTYPE_FPU | 10}, \ | |
1936 | {"$f11", RTYPE_FPU | 11}, \ | |
1937 | {"$f12", RTYPE_FPU | 12}, \ | |
1938 | {"$f13", RTYPE_FPU | 13}, \ | |
1939 | {"$f14", RTYPE_FPU | 14}, \ | |
1940 | {"$f15", RTYPE_FPU | 15}, \ | |
1941 | {"$f16", RTYPE_FPU | 16}, \ | |
1942 | {"$f17", RTYPE_FPU | 17}, \ | |
1943 | {"$f18", RTYPE_FPU | 18}, \ | |
1944 | {"$f19", RTYPE_FPU | 19}, \ | |
1945 | {"$f20", RTYPE_FPU | 20}, \ | |
1946 | {"$f21", RTYPE_FPU | 21}, \ | |
1947 | {"$f22", RTYPE_FPU | 22}, \ | |
1948 | {"$f23", RTYPE_FPU | 23}, \ | |
1949 | {"$f24", RTYPE_FPU | 24}, \ | |
1950 | {"$f25", RTYPE_FPU | 25}, \ | |
1951 | {"$f26", RTYPE_FPU | 26}, \ | |
1952 | {"$f27", RTYPE_FPU | 27}, \ | |
1953 | {"$f28", RTYPE_FPU | 28}, \ | |
1954 | {"$f29", RTYPE_FPU | 29}, \ | |
1955 | {"$f30", RTYPE_FPU | 30}, \ | |
1956 | {"$f31", RTYPE_FPU | 31} | |
1957 | ||
1958 | #define FPU_CONDITION_CODE_NAMES \ | |
1959 | {"$fcc0", RTYPE_FCC | 0}, \ | |
1960 | {"$fcc1", RTYPE_FCC | 1}, \ | |
1961 | {"$fcc2", RTYPE_FCC | 2}, \ | |
1962 | {"$fcc3", RTYPE_FCC | 3}, \ | |
1963 | {"$fcc4", RTYPE_FCC | 4}, \ | |
1964 | {"$fcc5", RTYPE_FCC | 5}, \ | |
1965 | {"$fcc6", RTYPE_FCC | 6}, \ | |
1966 | {"$fcc7", RTYPE_FCC | 7} | |
1967 | ||
1968 | #define COPROC_CONDITION_CODE_NAMES \ | |
1969 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
1970 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
1971 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
1972 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
1973 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
1974 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
1975 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
1976 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
1977 | ||
1978 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
1979 | {"$a4", RTYPE_GP | 8}, \ | |
1980 | {"$a5", RTYPE_GP | 9}, \ | |
1981 | {"$a6", RTYPE_GP | 10}, \ | |
1982 | {"$a7", RTYPE_GP | 11}, \ | |
1983 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
1984 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
1985 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
1986 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
1987 | {"$t0", RTYPE_GP | 12}, \ | |
1988 | {"$t1", RTYPE_GP | 13}, \ | |
1989 | {"$t2", RTYPE_GP | 14}, \ | |
1990 | {"$t3", RTYPE_GP | 15} | |
1991 | ||
1992 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
1993 | {"$t0", RTYPE_GP | 8}, \ | |
1994 | {"$t1", RTYPE_GP | 9}, \ | |
1995 | {"$t2", RTYPE_GP | 10}, \ | |
1996 | {"$t3", RTYPE_GP | 11}, \ | |
1997 | {"$t4", RTYPE_GP | 12}, \ | |
1998 | {"$t5", RTYPE_GP | 13}, \ | |
1999 | {"$t6", RTYPE_GP | 14}, \ | |
2000 | {"$t7", RTYPE_GP | 15}, \ | |
2001 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
2002 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
2003 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
2004 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ | |
2005 | ||
2006 | /* Remaining symbolic register names */ | |
2007 | #define SYMBOLIC_REGISTER_NAMES \ | |
2008 | {"$zero", RTYPE_GP | 0}, \ | |
2009 | {"$at", RTYPE_GP | 1}, \ | |
2010 | {"$AT", RTYPE_GP | 1}, \ | |
2011 | {"$v0", RTYPE_GP | 2}, \ | |
2012 | {"$v1", RTYPE_GP | 3}, \ | |
2013 | {"$a0", RTYPE_GP | 4}, \ | |
2014 | {"$a1", RTYPE_GP | 5}, \ | |
2015 | {"$a2", RTYPE_GP | 6}, \ | |
2016 | {"$a3", RTYPE_GP | 7}, \ | |
2017 | {"$s0", RTYPE_GP | 16}, \ | |
2018 | {"$s1", RTYPE_GP | 17}, \ | |
2019 | {"$s2", RTYPE_GP | 18}, \ | |
2020 | {"$s3", RTYPE_GP | 19}, \ | |
2021 | {"$s4", RTYPE_GP | 20}, \ | |
2022 | {"$s5", RTYPE_GP | 21}, \ | |
2023 | {"$s6", RTYPE_GP | 22}, \ | |
2024 | {"$s7", RTYPE_GP | 23}, \ | |
2025 | {"$t8", RTYPE_GP | 24}, \ | |
2026 | {"$t9", RTYPE_GP | 25}, \ | |
2027 | {"$k0", RTYPE_GP | 26}, \ | |
2028 | {"$kt0", RTYPE_GP | 26}, \ | |
2029 | {"$k1", RTYPE_GP | 27}, \ | |
2030 | {"$kt1", RTYPE_GP | 27}, \ | |
2031 | {"$gp", RTYPE_GP | 28}, \ | |
2032 | {"$sp", RTYPE_GP | 29}, \ | |
2033 | {"$s8", RTYPE_GP | 30}, \ | |
2034 | {"$fp", RTYPE_GP | 30}, \ | |
2035 | {"$ra", RTYPE_GP | 31} | |
2036 | ||
2037 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
2038 | {"$pc", RTYPE_PC | 0} | |
2039 | ||
2040 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
2041 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
2042 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
2043 | {"$v2", RTYPE_VEC | 2}, \ | |
2044 | {"$v3", RTYPE_VEC | 3}, \ | |
2045 | {"$v4", RTYPE_VEC | 4}, \ | |
2046 | {"$v5", RTYPE_VEC | 5}, \ | |
2047 | {"$v6", RTYPE_VEC | 6}, \ | |
2048 | {"$v7", RTYPE_VEC | 7}, \ | |
2049 | {"$v8", RTYPE_VEC | 8}, \ | |
2050 | {"$v9", RTYPE_VEC | 9}, \ | |
2051 | {"$v10", RTYPE_VEC | 10}, \ | |
2052 | {"$v11", RTYPE_VEC | 11}, \ | |
2053 | {"$v12", RTYPE_VEC | 12}, \ | |
2054 | {"$v13", RTYPE_VEC | 13}, \ | |
2055 | {"$v14", RTYPE_VEC | 14}, \ | |
2056 | {"$v15", RTYPE_VEC | 15}, \ | |
2057 | {"$v16", RTYPE_VEC | 16}, \ | |
2058 | {"$v17", RTYPE_VEC | 17}, \ | |
2059 | {"$v18", RTYPE_VEC | 18}, \ | |
2060 | {"$v19", RTYPE_VEC | 19}, \ | |
2061 | {"$v20", RTYPE_VEC | 20}, \ | |
2062 | {"$v21", RTYPE_VEC | 21}, \ | |
2063 | {"$v22", RTYPE_VEC | 22}, \ | |
2064 | {"$v23", RTYPE_VEC | 23}, \ | |
2065 | {"$v24", RTYPE_VEC | 24}, \ | |
2066 | {"$v25", RTYPE_VEC | 25}, \ | |
2067 | {"$v26", RTYPE_VEC | 26}, \ | |
2068 | {"$v27", RTYPE_VEC | 27}, \ | |
2069 | {"$v28", RTYPE_VEC | 28}, \ | |
2070 | {"$v29", RTYPE_VEC | 29}, \ | |
2071 | {"$v30", RTYPE_VEC | 30}, \ | |
2072 | {"$v31", RTYPE_VEC | 31} | |
2073 | ||
2074 | #define MIPS_DSP_ACCUMULATOR_NAMES \ | |
2075 | {"$ac0", RTYPE_ACC | 0}, \ | |
2076 | {"$ac1", RTYPE_ACC | 1}, \ | |
2077 | {"$ac2", RTYPE_ACC | 2}, \ | |
2078 | {"$ac3", RTYPE_ACC | 3} | |
2079 | ||
2080 | static const struct regname reg_names[] = { | |
2081 | GENERIC_REGISTER_NUMBERS, | |
2082 | FPU_REGISTER_NAMES, | |
2083 | FPU_CONDITION_CODE_NAMES, | |
2084 | COPROC_CONDITION_CODE_NAMES, | |
2085 | ||
2086 | /* The $txx registers depends on the abi, | |
2087 | these will be added later into the symbol table from | |
2088 | one of the tables below once mips_abi is set after | |
2089 | parsing of arguments from the command line. */ | |
2090 | SYMBOLIC_REGISTER_NAMES, | |
2091 | ||
2092 | MIPS16_SPECIAL_REGISTER_NAMES, | |
2093 | MDMX_VECTOR_REGISTER_NAMES, | |
2094 | MIPS_DSP_ACCUMULATOR_NAMES, | |
2095 | {0, 0} | |
2096 | }; | |
2097 | ||
2098 | static const struct regname reg_names_o32[] = { | |
2099 | O32_SYMBOLIC_REGISTER_NAMES, | |
2100 | {0, 0} | |
2101 | }; | |
2102 | ||
2103 | static const struct regname reg_names_n32n64[] = { | |
2104 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
2105 | {0, 0} | |
2106 | }; | |
2107 | ||
df58fc94 RS |
2108 | /* Check if S points at a valid register specifier according to TYPES. |
2109 | If so, then return 1, advance S to consume the specifier and store | |
2110 | the register's number in REGNOP, otherwise return 0. */ | |
2111 | ||
707bfff6 TS |
2112 | static int |
2113 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
2114 | { | |
2115 | symbolS *symbolP; | |
2116 | char *e; | |
2117 | char save_c; | |
2118 | int reg = -1; | |
2119 | ||
2120 | /* Find end of name. */ | |
2121 | e = *s; | |
2122 | if (is_name_beginner (*e)) | |
2123 | ++e; | |
2124 | while (is_part_of_name (*e)) | |
2125 | ++e; | |
2126 | ||
2127 | /* Terminate name. */ | |
2128 | save_c = *e; | |
2129 | *e = '\0'; | |
2130 | ||
2131 | /* Look for a register symbol. */ | |
2132 | if ((symbolP = symbol_find (*s)) && S_GET_SEGMENT (symbolP) == reg_section) | |
2133 | { | |
2134 | int r = S_GET_VALUE (symbolP); | |
2135 | if (r & types) | |
2136 | reg = r & RNUM_MASK; | |
2137 | else if ((types & RTYPE_VEC) && (r & ~1) == (RTYPE_GP | 2)) | |
2138 | /* Convert GP reg $v0/1 to MDMX reg $v0/1! */ | |
2139 | reg = (r & RNUM_MASK) - 2; | |
2140 | } | |
2141 | /* Else see if this is a register defined in an itbl entry. */ | |
2142 | else if ((types & RTYPE_GP) && itbl_have_entries) | |
2143 | { | |
2144 | char *n = *s; | |
2145 | unsigned long r; | |
2146 | ||
2147 | if (*n == '$') | |
2148 | ++n; | |
2149 | if (itbl_get_reg_val (n, &r)) | |
2150 | reg = r & RNUM_MASK; | |
2151 | } | |
2152 | ||
2153 | /* Advance to next token if a register was recognised. */ | |
2154 | if (reg >= 0) | |
2155 | *s = e; | |
2156 | else if (types & RWARN) | |
20203fb9 | 2157 | as_warn (_("Unrecognized register name `%s'"), *s); |
707bfff6 TS |
2158 | |
2159 | *e = save_c; | |
2160 | if (regnop) | |
2161 | *regnop = reg; | |
2162 | return reg >= 0; | |
2163 | } | |
2164 | ||
df58fc94 RS |
2165 | /* Check if S points at a valid register list according to TYPES. |
2166 | If so, then return 1, advance S to consume the list and store | |
2167 | the registers present on the list as a bitmask of ones in REGLISTP, | |
2168 | otherwise return 0. A valid list comprises a comma-separated | |
2169 | enumeration of valid single registers and/or dash-separated | |
2170 | contiguous register ranges as determined by their numbers. | |
2171 | ||
2172 | As a special exception if one of s0-s7 registers is specified as | |
2173 | the range's lower delimiter and s8 (fp) is its upper one, then no | |
2174 | registers whose numbers place them between s7 and s8 (i.e. $24-$29) | |
2309ddf2 | 2175 | are selected; they have to be listed separately if needed. */ |
df58fc94 RS |
2176 | |
2177 | static int | |
2178 | reglist_lookup (char **s, unsigned int types, unsigned int *reglistp) | |
2179 | { | |
2180 | unsigned int reglist = 0; | |
2181 | unsigned int lastregno; | |
2182 | bfd_boolean ok = TRUE; | |
2183 | unsigned int regmask; | |
2309ddf2 | 2184 | char *s_endlist = *s; |
df58fc94 | 2185 | char *s_reset = *s; |
2309ddf2 | 2186 | unsigned int regno; |
df58fc94 RS |
2187 | |
2188 | while (reg_lookup (s, types, ®no)) | |
2189 | { | |
2190 | lastregno = regno; | |
2191 | if (**s == '-') | |
2192 | { | |
2193 | (*s)++; | |
2194 | ok = reg_lookup (s, types, &lastregno); | |
2195 | if (ok && lastregno < regno) | |
2196 | ok = FALSE; | |
2197 | if (!ok) | |
2198 | break; | |
2199 | } | |
2200 | ||
2201 | if (lastregno == FP && regno >= S0 && regno <= S7) | |
2202 | { | |
2203 | lastregno = S7; | |
2204 | reglist |= 1 << FP; | |
2205 | } | |
2206 | regmask = 1 << lastregno; | |
2207 | regmask = (regmask << 1) - 1; | |
2208 | regmask ^= (1 << regno) - 1; | |
2209 | reglist |= regmask; | |
2210 | ||
2309ddf2 | 2211 | s_endlist = *s; |
df58fc94 RS |
2212 | if (**s != ',') |
2213 | break; | |
2214 | (*s)++; | |
2215 | } | |
2216 | ||
2217 | if (ok) | |
2309ddf2 | 2218 | *s = s_endlist; |
df58fc94 RS |
2219 | else |
2220 | *s = s_reset; | |
2221 | if (reglistp) | |
2222 | *reglistp = reglist; | |
2223 | return ok && reglist != 0; | |
2224 | } | |
2225 | ||
037b32b9 | 2226 | /* Return TRUE if opcode MO is valid on the currently selected ISA and |
f79e2745 | 2227 | architecture. Use is_opcode_valid_16 for MIPS16 opcodes. */ |
037b32b9 AN |
2228 | |
2229 | static bfd_boolean | |
f79e2745 | 2230 | is_opcode_valid (const struct mips_opcode *mo) |
037b32b9 AN |
2231 | { |
2232 | int isa = mips_opts.isa; | |
2233 | int fp_s, fp_d; | |
2234 | ||
2235 | if (mips_opts.ase_mdmx) | |
2236 | isa |= INSN_MDMX; | |
2237 | if (mips_opts.ase_dsp) | |
2238 | isa |= INSN_DSP; | |
2239 | if (mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE) | |
2240 | isa |= INSN_DSP64; | |
2241 | if (mips_opts.ase_dspr2) | |
2242 | isa |= INSN_DSPR2; | |
2243 | if (mips_opts.ase_mt) | |
2244 | isa |= INSN_MT; | |
2245 | if (mips_opts.ase_mips3d) | |
2246 | isa |= INSN_MIPS3D; | |
2247 | if (mips_opts.ase_smartmips) | |
2248 | isa |= INSN_SMARTMIPS; | |
dec0624d MR |
2249 | if (mips_opts.ase_mcu) |
2250 | isa |= INSN_MCU; | |
037b32b9 | 2251 | |
35d0a169 | 2252 | if (!opcode_is_member (mo, isa, mips_opts.arch)) |
037b32b9 AN |
2253 | return FALSE; |
2254 | ||
2255 | /* Check whether the instruction or macro requires single-precision or | |
2256 | double-precision floating-point support. Note that this information is | |
2257 | stored differently in the opcode table for insns and macros. */ | |
2258 | if (mo->pinfo == INSN_MACRO) | |
2259 | { | |
2260 | fp_s = mo->pinfo2 & INSN2_M_FP_S; | |
2261 | fp_d = mo->pinfo2 & INSN2_M_FP_D; | |
2262 | } | |
2263 | else | |
2264 | { | |
2265 | fp_s = mo->pinfo & FP_S; | |
2266 | fp_d = mo->pinfo & FP_D; | |
2267 | } | |
2268 | ||
2269 | if (fp_d && (mips_opts.soft_float || mips_opts.single_float)) | |
2270 | return FALSE; | |
2271 | ||
2272 | if (fp_s && mips_opts.soft_float) | |
2273 | return FALSE; | |
2274 | ||
2275 | return TRUE; | |
2276 | } | |
2277 | ||
2278 | /* Return TRUE if the MIPS16 opcode MO is valid on the currently | |
2279 | selected ISA and architecture. */ | |
2280 | ||
2281 | static bfd_boolean | |
2282 | is_opcode_valid_16 (const struct mips_opcode *mo) | |
2283 | { | |
35d0a169 | 2284 | return opcode_is_member (mo, mips_opts.isa, mips_opts.arch); |
037b32b9 AN |
2285 | } |
2286 | ||
df58fc94 RS |
2287 | /* Return TRUE if the size of the microMIPS opcode MO matches one |
2288 | explicitly requested. Always TRUE in the standard MIPS mode. */ | |
2289 | ||
2290 | static bfd_boolean | |
2291 | is_size_valid (const struct mips_opcode *mo) | |
2292 | { | |
2293 | if (!mips_opts.micromips) | |
2294 | return TRUE; | |
2295 | ||
2296 | if (!forced_insn_length) | |
2297 | return TRUE; | |
2298 | if (mo->pinfo == INSN_MACRO) | |
2299 | return FALSE; | |
2300 | return forced_insn_length == micromips_insn_length (mo); | |
2301 | } | |
2302 | ||
2303 | /* Return TRUE if the microMIPS opcode MO is valid for the delay slot | |
e64af278 MR |
2304 | of the preceding instruction. Always TRUE in the standard MIPS mode. |
2305 | ||
2306 | We don't accept macros in 16-bit delay slots to avoid a case where | |
2307 | a macro expansion fails because it relies on a preceding 32-bit real | |
2308 | instruction to have matched and does not handle the operands correctly. | |
2309 | The only macros that may expand to 16-bit instructions are JAL that | |
2310 | cannot be placed in a delay slot anyway, and corner cases of BALIGN | |
2311 | and BGT (that likewise cannot be placed in a delay slot) that decay to | |
2312 | a NOP. In all these cases the macros precede any corresponding real | |
2313 | instruction definitions in the opcode table, so they will match in the | |
2314 | second pass where the size of the delay slot is ignored and therefore | |
2315 | produce correct code. */ | |
df58fc94 RS |
2316 | |
2317 | static bfd_boolean | |
2318 | is_delay_slot_valid (const struct mips_opcode *mo) | |
2319 | { | |
2320 | if (!mips_opts.micromips) | |
2321 | return TRUE; | |
2322 | ||
2323 | if (mo->pinfo == INSN_MACRO) | |
e64af278 MR |
2324 | return ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) == 0 |
2325 | ? TRUE : FALSE); | |
df58fc94 RS |
2326 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 |
2327 | && micromips_insn_length (mo) != 4) | |
2328 | return FALSE; | |
2329 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
2330 | && micromips_insn_length (mo) != 2) | |
2331 | return FALSE; | |
2332 | ||
2333 | return TRUE; | |
2334 | } | |
2335 | ||
707bfff6 TS |
2336 | /* This function is called once, at assembler startup time. It should set up |
2337 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 2338 | |
252b5132 | 2339 | void |
17a2f251 | 2340 | md_begin (void) |
252b5132 | 2341 | { |
3994f87e | 2342 | const char *retval = NULL; |
156c2f8b | 2343 | int i = 0; |
252b5132 | 2344 | int broken = 0; |
1f25f5d3 | 2345 | |
0a44bf69 RS |
2346 | if (mips_pic != NO_PIC) |
2347 | { | |
2348 | if (g_switch_seen && g_switch_value != 0) | |
2349 | as_bad (_("-G may not be used in position-independent code")); | |
2350 | g_switch_value = 0; | |
2351 | } | |
2352 | ||
fef14a42 | 2353 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch)) |
252b5132 RH |
2354 | as_warn (_("Could not set architecture and machine")); |
2355 | ||
252b5132 RH |
2356 | op_hash = hash_new (); |
2357 | ||
2358 | for (i = 0; i < NUMOPCODES;) | |
2359 | { | |
2360 | const char *name = mips_opcodes[i].name; | |
2361 | ||
17a2f251 | 2362 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
2363 | if (retval != NULL) |
2364 | { | |
2365 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
2366 | mips_opcodes[i].name, retval); | |
2367 | /* Probably a memory allocation problem? Give up now. */ | |
2368 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
2369 | } | |
2370 | do | |
2371 | { | |
2372 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
2373 | { | |
2374 | if (!validate_mips_insn (&mips_opcodes[i])) | |
2375 | broken = 1; | |
1e915849 RS |
2376 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
2377 | { | |
2378 | create_insn (&nop_insn, mips_opcodes + i); | |
c67a084a NC |
2379 | if (mips_fix_loongson2f_nop) |
2380 | nop_insn.insn_opcode = LOONGSON2F_NOP_INSN; | |
1e915849 RS |
2381 | nop_insn.fixed_p = 1; |
2382 | } | |
252b5132 RH |
2383 | } |
2384 | ++i; | |
2385 | } | |
2386 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
2387 | } | |
2388 | ||
2389 | mips16_op_hash = hash_new (); | |
2390 | ||
2391 | i = 0; | |
2392 | while (i < bfd_mips16_num_opcodes) | |
2393 | { | |
2394 | const char *name = mips16_opcodes[i].name; | |
2395 | ||
17a2f251 | 2396 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
2397 | if (retval != NULL) |
2398 | as_fatal (_("internal: can't hash `%s': %s"), | |
2399 | mips16_opcodes[i].name, retval); | |
2400 | do | |
2401 | { | |
2402 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
2403 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
2404 | != mips16_opcodes[i].match)) | |
2405 | { | |
2406 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
2407 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
2408 | broken = 1; | |
2409 | } | |
1e915849 RS |
2410 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
2411 | { | |
2412 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
2413 | mips16_nop_insn.fixed_p = 1; | |
2414 | } | |
252b5132 RH |
2415 | ++i; |
2416 | } | |
2417 | while (i < bfd_mips16_num_opcodes | |
2418 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
2419 | } | |
2420 | ||
df58fc94 RS |
2421 | micromips_op_hash = hash_new (); |
2422 | ||
2423 | i = 0; | |
2424 | while (i < bfd_micromips_num_opcodes) | |
2425 | { | |
2426 | const char *name = micromips_opcodes[i].name; | |
2427 | ||
2428 | retval = hash_insert (micromips_op_hash, name, | |
2429 | (void *) µmips_opcodes[i]); | |
2430 | if (retval != NULL) | |
2431 | as_fatal (_("internal: can't hash `%s': %s"), | |
2432 | micromips_opcodes[i].name, retval); | |
2433 | do | |
2434 | if (micromips_opcodes[i].pinfo != INSN_MACRO) | |
2435 | { | |
2436 | struct mips_cl_insn *micromips_nop_insn; | |
2437 | ||
2438 | if (!validate_micromips_insn (µmips_opcodes[i])) | |
2439 | broken = 1; | |
2440 | ||
2441 | if (micromips_insn_length (micromips_opcodes + i) == 2) | |
2442 | micromips_nop_insn = µmips_nop16_insn; | |
2443 | else if (micromips_insn_length (micromips_opcodes + i) == 4) | |
2444 | micromips_nop_insn = µmips_nop32_insn; | |
2445 | else | |
2446 | continue; | |
2447 | ||
2448 | if (micromips_nop_insn->insn_mo == NULL | |
2449 | && strcmp (name, "nop") == 0) | |
2450 | { | |
2451 | create_insn (micromips_nop_insn, micromips_opcodes + i); | |
2452 | micromips_nop_insn->fixed_p = 1; | |
2453 | } | |
2454 | } | |
2455 | while (++i < bfd_micromips_num_opcodes | |
2456 | && strcmp (micromips_opcodes[i].name, name) == 0); | |
2457 | } | |
2458 | ||
252b5132 RH |
2459 | if (broken) |
2460 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
2461 | ||
2462 | /* We add all the general register names to the symbol table. This | |
2463 | helps us detect invalid uses of them. */ | |
707bfff6 TS |
2464 | for (i = 0; reg_names[i].name; i++) |
2465 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, | |
8fc4ee9b | 2466 | reg_names[i].num, /* & RNUM_MASK, */ |
707bfff6 TS |
2467 | &zero_address_frag)); |
2468 | if (HAVE_NEWABI) | |
2469 | for (i = 0; reg_names_n32n64[i].name; i++) | |
2470 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, | |
8fc4ee9b | 2471 | reg_names_n32n64[i].num, /* & RNUM_MASK, */ |
252b5132 | 2472 | &zero_address_frag)); |
707bfff6 TS |
2473 | else |
2474 | for (i = 0; reg_names_o32[i].name; i++) | |
2475 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, | |
8fc4ee9b | 2476 | reg_names_o32[i].num, /* & RNUM_MASK, */ |
6047c971 | 2477 | &zero_address_frag)); |
6047c971 | 2478 | |
7d10b47d | 2479 | mips_no_prev_insn (); |
252b5132 RH |
2480 | |
2481 | mips_gprmask = 0; | |
2482 | mips_cprmask[0] = 0; | |
2483 | mips_cprmask[1] = 0; | |
2484 | mips_cprmask[2] = 0; | |
2485 | mips_cprmask[3] = 0; | |
2486 | ||
2487 | /* set the default alignment for the text section (2**2) */ | |
2488 | record_alignment (text_section, 2); | |
2489 | ||
4d0d148d | 2490 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 2491 | |
707bfff6 | 2492 | #ifdef OBJ_ELF |
f43abd2b | 2493 | if (IS_ELF) |
252b5132 | 2494 | { |
0a44bf69 RS |
2495 | /* On a native system other than VxWorks, sections must be aligned |
2496 | to 16 byte boundaries. When configured for an embedded ELF | |
2497 | target, we don't bother. */ | |
c41e87e3 CF |
2498 | if (strncmp (TARGET_OS, "elf", 3) != 0 |
2499 | && strncmp (TARGET_OS, "vxworks", 7) != 0) | |
252b5132 RH |
2500 | { |
2501 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
2502 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
2503 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
2504 | } | |
2505 | ||
2506 | /* Create a .reginfo section for register masks and a .mdebug | |
2507 | section for debugging information. */ | |
2508 | { | |
2509 | segT seg; | |
2510 | subsegT subseg; | |
2511 | flagword flags; | |
2512 | segT sec; | |
2513 | ||
2514 | seg = now_seg; | |
2515 | subseg = now_subseg; | |
2516 | ||
2517 | /* The ABI says this section should be loaded so that the | |
2518 | running program can access it. However, we don't load it | |
2519 | if we are configured for an embedded target */ | |
2520 | flags = SEC_READONLY | SEC_DATA; | |
c41e87e3 | 2521 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
2522 | flags |= SEC_ALLOC | SEC_LOAD; |
2523 | ||
316f5878 | 2524 | if (mips_abi != N64_ABI) |
252b5132 RH |
2525 | { |
2526 | sec = subseg_new (".reginfo", (subsegT) 0); | |
2527 | ||
195325d2 TS |
2528 | bfd_set_section_flags (stdoutput, sec, flags); |
2529 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 2530 | |
252b5132 | 2531 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
252b5132 RH |
2532 | } |
2533 | else | |
2534 | { | |
2535 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
2536 | .reginfo section. */ | |
2537 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
2538 | bfd_set_section_flags (stdoutput, sec, flags); |
2539 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 2540 | |
252b5132 RH |
2541 | /* Set up the option header. */ |
2542 | { | |
2543 | Elf_Internal_Options opthdr; | |
2544 | char *f; | |
2545 | ||
2546 | opthdr.kind = ODK_REGINFO; | |
2547 | opthdr.size = (sizeof (Elf_External_Options) | |
2548 | + sizeof (Elf64_External_RegInfo)); | |
2549 | opthdr.section = 0; | |
2550 | opthdr.info = 0; | |
2551 | f = frag_more (sizeof (Elf_External_Options)); | |
2552 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
2553 | (Elf_External_Options *) f); | |
2554 | ||
2555 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
2556 | } | |
252b5132 RH |
2557 | } |
2558 | ||
2559 | if (ECOFF_DEBUGGING) | |
2560 | { | |
2561 | sec = subseg_new (".mdebug", (subsegT) 0); | |
2562 | (void) bfd_set_section_flags (stdoutput, sec, | |
2563 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2564 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
2565 | } | |
f43abd2b | 2566 | else if (mips_flag_pdr) |
ecb4347a DJ |
2567 | { |
2568 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
2569 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
2570 | SEC_READONLY | SEC_RELOC | |
2571 | | SEC_DEBUGGING); | |
2572 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
2573 | } | |
252b5132 RH |
2574 | |
2575 | subseg_set (seg, subseg); | |
2576 | } | |
2577 | } | |
707bfff6 | 2578 | #endif /* OBJ_ELF */ |
252b5132 RH |
2579 | |
2580 | if (! ECOFF_DEBUGGING) | |
2581 | md_obj_begin (); | |
71400594 RS |
2582 | |
2583 | if (mips_fix_vr4120) | |
2584 | init_vr4120_conflicts (); | |
252b5132 RH |
2585 | } |
2586 | ||
2587 | void | |
17a2f251 | 2588 | md_mips_end (void) |
252b5132 | 2589 | { |
02b1ab82 | 2590 | mips_emit_delays (); |
252b5132 RH |
2591 | if (! ECOFF_DEBUGGING) |
2592 | md_obj_end (); | |
2593 | } | |
2594 | ||
2595 | void | |
17a2f251 | 2596 | md_assemble (char *str) |
252b5132 RH |
2597 | { |
2598 | struct mips_cl_insn insn; | |
f6688943 TS |
2599 | bfd_reloc_code_real_type unused_reloc[3] |
2600 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
2601 | |
2602 | imm_expr.X_op = O_absent; | |
5f74bc13 | 2603 | imm2_expr.X_op = O_absent; |
252b5132 | 2604 | offset_expr.X_op = O_absent; |
f6688943 TS |
2605 | imm_reloc[0] = BFD_RELOC_UNUSED; |
2606 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
2607 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
2608 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
2609 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
2610 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 | 2611 | |
e1b47bd5 RS |
2612 | mips_mark_labels (); |
2613 | mips_assembling_insn = TRUE; | |
2614 | ||
252b5132 RH |
2615 | if (mips_opts.mips16) |
2616 | mips16_ip (str, &insn); | |
2617 | else | |
2618 | { | |
2619 | mips_ip (str, &insn); | |
beae10d5 KH |
2620 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
2621 | str, insn.insn_opcode)); | |
252b5132 RH |
2622 | } |
2623 | ||
2624 | if (insn_error) | |
e1b47bd5 RS |
2625 | as_bad ("%s `%s'", insn_error, str); |
2626 | else if (insn.insn_mo->pinfo == INSN_MACRO) | |
252b5132 | 2627 | { |
584892a6 | 2628 | macro_start (); |
252b5132 RH |
2629 | if (mips_opts.mips16) |
2630 | mips16_macro (&insn); | |
2631 | else | |
2632 | macro (&insn); | |
584892a6 | 2633 | macro_end (); |
252b5132 RH |
2634 | } |
2635 | else | |
2636 | { | |
2637 | if (imm_expr.X_op != O_absent) | |
df58fc94 | 2638 | append_insn (&insn, &imm_expr, imm_reloc, FALSE); |
252b5132 | 2639 | else if (offset_expr.X_op != O_absent) |
df58fc94 | 2640 | append_insn (&insn, &offset_expr, offset_reloc, FALSE); |
252b5132 | 2641 | else |
df58fc94 | 2642 | append_insn (&insn, NULL, unused_reloc, FALSE); |
252b5132 | 2643 | } |
e1b47bd5 RS |
2644 | |
2645 | mips_assembling_insn = FALSE; | |
252b5132 RH |
2646 | } |
2647 | ||
738e5348 RS |
2648 | /* Convenience functions for abstracting away the differences between |
2649 | MIPS16 and non-MIPS16 relocations. */ | |
2650 | ||
2651 | static inline bfd_boolean | |
2652 | mips16_reloc_p (bfd_reloc_code_real_type reloc) | |
2653 | { | |
2654 | switch (reloc) | |
2655 | { | |
2656 | case BFD_RELOC_MIPS16_JMP: | |
2657 | case BFD_RELOC_MIPS16_GPREL: | |
2658 | case BFD_RELOC_MIPS16_GOT16: | |
2659 | case BFD_RELOC_MIPS16_CALL16: | |
2660 | case BFD_RELOC_MIPS16_HI16_S: | |
2661 | case BFD_RELOC_MIPS16_HI16: | |
2662 | case BFD_RELOC_MIPS16_LO16: | |
2663 | return TRUE; | |
2664 | ||
2665 | default: | |
2666 | return FALSE; | |
2667 | } | |
2668 | } | |
2669 | ||
df58fc94 RS |
2670 | static inline bfd_boolean |
2671 | micromips_reloc_p (bfd_reloc_code_real_type reloc) | |
2672 | { | |
2673 | switch (reloc) | |
2674 | { | |
2675 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
2676 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
2677 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
2678 | case BFD_RELOC_MICROMIPS_GPREL16: | |
2679 | case BFD_RELOC_MICROMIPS_JMP: | |
2680 | case BFD_RELOC_MICROMIPS_HI16: | |
2681 | case BFD_RELOC_MICROMIPS_HI16_S: | |
2682 | case BFD_RELOC_MICROMIPS_LO16: | |
2683 | case BFD_RELOC_MICROMIPS_LITERAL: | |
2684 | case BFD_RELOC_MICROMIPS_GOT16: | |
2685 | case BFD_RELOC_MICROMIPS_CALL16: | |
2686 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
2687 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
2688 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
2689 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
2690 | case BFD_RELOC_MICROMIPS_SUB: | |
2691 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
2692 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
2693 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
2694 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
2695 | case BFD_RELOC_MICROMIPS_HIGHER: | |
2696 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
2697 | case BFD_RELOC_MICROMIPS_JALR: | |
2698 | return TRUE; | |
2699 | ||
2700 | default: | |
2701 | return FALSE; | |
2702 | } | |
2703 | } | |
2704 | ||
2309ddf2 MR |
2705 | static inline bfd_boolean |
2706 | jmp_reloc_p (bfd_reloc_code_real_type reloc) | |
2707 | { | |
2708 | return reloc == BFD_RELOC_MIPS_JMP || reloc == BFD_RELOC_MICROMIPS_JMP; | |
2709 | } | |
2710 | ||
738e5348 RS |
2711 | static inline bfd_boolean |
2712 | got16_reloc_p (bfd_reloc_code_real_type reloc) | |
2713 | { | |
2309ddf2 | 2714 | return (reloc == BFD_RELOC_MIPS_GOT16 || reloc == BFD_RELOC_MIPS16_GOT16 |
df58fc94 | 2715 | || reloc == BFD_RELOC_MICROMIPS_GOT16); |
738e5348 RS |
2716 | } |
2717 | ||
2718 | static inline bfd_boolean | |
2719 | hi16_reloc_p (bfd_reloc_code_real_type reloc) | |
2720 | { | |
2309ddf2 | 2721 | return (reloc == BFD_RELOC_HI16_S || reloc == BFD_RELOC_MIPS16_HI16_S |
df58fc94 | 2722 | || reloc == BFD_RELOC_MICROMIPS_HI16_S); |
738e5348 RS |
2723 | } |
2724 | ||
2725 | static inline bfd_boolean | |
2726 | lo16_reloc_p (bfd_reloc_code_real_type reloc) | |
2727 | { | |
2309ddf2 | 2728 | return (reloc == BFD_RELOC_LO16 || reloc == BFD_RELOC_MIPS16_LO16 |
df58fc94 RS |
2729 | || reloc == BFD_RELOC_MICROMIPS_LO16); |
2730 | } | |
2731 | ||
df58fc94 RS |
2732 | static inline bfd_boolean |
2733 | jalr_reloc_p (bfd_reloc_code_real_type reloc) | |
2734 | { | |
2309ddf2 | 2735 | return reloc == BFD_RELOC_MIPS_JALR || reloc == BFD_RELOC_MICROMIPS_JALR; |
738e5348 RS |
2736 | } |
2737 | ||
5919d012 | 2738 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
2739 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
2740 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
2741 | |
2742 | static inline bfd_boolean | |
17a2f251 | 2743 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 2744 | { |
3b91255e | 2745 | return (HAVE_IN_PLACE_ADDENDS |
738e5348 | 2746 | && (hi16_reloc_p (reloc) |
0a44bf69 RS |
2747 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); |
2748 | all GOT16 relocations evaluate to "G". */ | |
738e5348 RS |
2749 | || (got16_reloc_p (reloc) && mips_pic != VXWORKS_PIC))); |
2750 | } | |
2751 | ||
2752 | /* Return the type of %lo() reloc needed by RELOC, given that | |
2753 | reloc_needs_lo_p. */ | |
2754 | ||
2755 | static inline bfd_reloc_code_real_type | |
2756 | matching_lo_reloc (bfd_reloc_code_real_type reloc) | |
2757 | { | |
df58fc94 RS |
2758 | return (mips16_reloc_p (reloc) ? BFD_RELOC_MIPS16_LO16 |
2759 | : (micromips_reloc_p (reloc) ? BFD_RELOC_MICROMIPS_LO16 | |
2760 | : BFD_RELOC_LO16)); | |
5919d012 RS |
2761 | } |
2762 | ||
2763 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
2764 | relocation. */ | |
2765 | ||
2766 | static inline bfd_boolean | |
17a2f251 | 2767 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
2768 | { |
2769 | return (fixp->fx_next != NULL | |
738e5348 | 2770 | && fixp->fx_next->fx_r_type == matching_lo_reloc (fixp->fx_r_type) |
5919d012 RS |
2771 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
2772 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
2773 | } | |
2774 | ||
252b5132 RH |
2775 | /* This function returns true if modifying a register requires a |
2776 | delay. */ | |
2777 | ||
2778 | static int | |
17a2f251 | 2779 | reg_needs_delay (unsigned int reg) |
252b5132 RH |
2780 | { |
2781 | unsigned long prev_pinfo; | |
2782 | ||
47e39b9d | 2783 | prev_pinfo = history[0].insn_mo->pinfo; |
252b5132 | 2784 | if (! mips_opts.noreorder |
81912461 ILT |
2785 | && (((prev_pinfo & INSN_LOAD_MEMORY_DELAY) |
2786 | && ! gpr_interlocks) | |
2787 | || ((prev_pinfo & INSN_LOAD_COPROC_DELAY) | |
2788 | && ! cop_interlocks))) | |
252b5132 | 2789 | { |
81912461 ILT |
2790 | /* A load from a coprocessor or from memory. All load delays |
2791 | delay the use of general register rt for one instruction. */ | |
bdaaa2e1 | 2792 | /* Itbl support may require additional care here. */ |
252b5132 | 2793 | know (prev_pinfo & INSN_WRITE_GPR_T); |
df58fc94 | 2794 | if (reg == EXTRACT_OPERAND (mips_opts.micromips, RT, history[0])) |
252b5132 RH |
2795 | return 1; |
2796 | } | |
2797 | ||
2798 | return 0; | |
2799 | } | |
2800 | ||
462427c4 RS |
2801 | /* Move all labels in LABELS to the current insertion point. TEXT_P |
2802 | says whether the labels refer to text or data. */ | |
404a8071 RS |
2803 | |
2804 | static void | |
462427c4 | 2805 | mips_move_labels (struct insn_label_list *labels, bfd_boolean text_p) |
404a8071 RS |
2806 | { |
2807 | struct insn_label_list *l; | |
2808 | valueT val; | |
2809 | ||
462427c4 | 2810 | for (l = labels; l != NULL; l = l->next) |
404a8071 | 2811 | { |
9c2799c2 | 2812 | gas_assert (S_GET_SEGMENT (l->label) == now_seg); |
404a8071 RS |
2813 | symbol_set_frag (l->label, frag_now); |
2814 | val = (valueT) frag_now_fix (); | |
df58fc94 | 2815 | /* MIPS16/microMIPS text labels are stored as odd. */ |
462427c4 | 2816 | if (text_p && HAVE_CODE_COMPRESSION) |
404a8071 RS |
2817 | ++val; |
2818 | S_SET_VALUE (l->label, val); | |
2819 | } | |
2820 | } | |
2821 | ||
462427c4 RS |
2822 | /* Move all labels in insn_labels to the current insertion point |
2823 | and treat them as text labels. */ | |
2824 | ||
2825 | static void | |
2826 | mips_move_text_labels (void) | |
2827 | { | |
2828 | mips_move_labels (seg_info (now_seg)->label_list, TRUE); | |
2829 | } | |
2830 | ||
5f0fe04b TS |
2831 | static bfd_boolean |
2832 | s_is_linkonce (symbolS *sym, segT from_seg) | |
2833 | { | |
2834 | bfd_boolean linkonce = FALSE; | |
2835 | segT symseg = S_GET_SEGMENT (sym); | |
2836 | ||
2837 | if (symseg != from_seg && !S_IS_LOCAL (sym)) | |
2838 | { | |
2839 | if ((bfd_get_section_flags (stdoutput, symseg) & SEC_LINK_ONCE)) | |
2840 | linkonce = TRUE; | |
2841 | #ifdef OBJ_ELF | |
2842 | /* The GNU toolchain uses an extension for ELF: a section | |
2843 | beginning with the magic string .gnu.linkonce is a | |
2844 | linkonce section. */ | |
2845 | if (strncmp (segment_name (symseg), ".gnu.linkonce", | |
2846 | sizeof ".gnu.linkonce" - 1) == 0) | |
2847 | linkonce = TRUE; | |
2848 | #endif | |
2849 | } | |
2850 | return linkonce; | |
2851 | } | |
2852 | ||
e1b47bd5 | 2853 | /* Mark MIPS16 or microMIPS instruction label LABEL. This permits the |
df58fc94 RS |
2854 | linker to handle them specially, such as generating jalx instructions |
2855 | when needed. We also make them odd for the duration of the assembly, | |
2856 | in order to generate the right sort of code. We will make them even | |
252b5132 RH |
2857 | in the adjust_symtab routine, while leaving them marked. This is |
2858 | convenient for the debugger and the disassembler. The linker knows | |
2859 | to make them odd again. */ | |
2860 | ||
2861 | static void | |
e1b47bd5 | 2862 | mips_compressed_mark_label (symbolS *label) |
252b5132 | 2863 | { |
df58fc94 | 2864 | gas_assert (HAVE_CODE_COMPRESSION); |
a8dbcb85 | 2865 | |
a8dbcb85 | 2866 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) |
e1b47bd5 RS |
2867 | if (IS_ELF) |
2868 | { | |
2869 | if (mips_opts.mips16) | |
2870 | S_SET_OTHER (label, ELF_ST_SET_MIPS16 (S_GET_OTHER (label))); | |
2871 | else | |
2872 | S_SET_OTHER (label, ELF_ST_SET_MICROMIPS (S_GET_OTHER (label))); | |
252b5132 | 2873 | } |
e1b47bd5 RS |
2874 | #endif |
2875 | if ((S_GET_VALUE (label) & 1) == 0 | |
2876 | /* Don't adjust the address if the label is global or weak, or | |
2877 | in a link-once section, since we'll be emitting symbol reloc | |
2878 | references to it which will be patched up by the linker, and | |
2879 | the final value of the symbol may or may not be MIPS16/microMIPS. */ | |
2880 | && !S_IS_WEAK (label) | |
2881 | && !S_IS_EXTERNAL (label) | |
2882 | && !s_is_linkonce (label, now_seg)) | |
2883 | S_SET_VALUE (label, S_GET_VALUE (label) | 1); | |
2884 | } | |
2885 | ||
2886 | /* Mark preceding MIPS16 or microMIPS instruction labels. */ | |
2887 | ||
2888 | static void | |
2889 | mips_compressed_mark_labels (void) | |
2890 | { | |
2891 | struct insn_label_list *l; | |
2892 | ||
2893 | for (l = seg_info (now_seg)->label_list; l != NULL; l = l->next) | |
2894 | mips_compressed_mark_label (l->label); | |
252b5132 RH |
2895 | } |
2896 | ||
4d7206a2 RS |
2897 | /* End the current frag. Make it a variant frag and record the |
2898 | relaxation info. */ | |
2899 | ||
2900 | static void | |
2901 | relax_close_frag (void) | |
2902 | { | |
584892a6 | 2903 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 2904 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 2905 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
2906 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
2907 | ||
2908 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
2909 | mips_relax.first_fixup = 0; | |
2910 | } | |
2911 | ||
2912 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
2913 | See the comment above RELAX_ENCODE for more details. */ | |
2914 | ||
2915 | static void | |
2916 | relax_start (symbolS *symbol) | |
2917 | { | |
9c2799c2 | 2918 | gas_assert (mips_relax.sequence == 0); |
4d7206a2 RS |
2919 | mips_relax.sequence = 1; |
2920 | mips_relax.symbol = symbol; | |
2921 | } | |
2922 | ||
2923 | /* Start generating the second version of a relaxable sequence. | |
2924 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
2925 | |
2926 | static void | |
4d7206a2 RS |
2927 | relax_switch (void) |
2928 | { | |
9c2799c2 | 2929 | gas_assert (mips_relax.sequence == 1); |
4d7206a2 RS |
2930 | mips_relax.sequence = 2; |
2931 | } | |
2932 | ||
2933 | /* End the current relaxable sequence. */ | |
2934 | ||
2935 | static void | |
2936 | relax_end (void) | |
2937 | { | |
9c2799c2 | 2938 | gas_assert (mips_relax.sequence == 2); |
4d7206a2 RS |
2939 | relax_close_frag (); |
2940 | mips_relax.sequence = 0; | |
2941 | } | |
2942 | ||
11625dd8 RS |
2943 | /* Return true if IP is a delayed branch or jump. */ |
2944 | ||
2945 | static inline bfd_boolean | |
2946 | delayed_branch_p (const struct mips_cl_insn *ip) | |
2947 | { | |
2948 | return (ip->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY | |
2949 | | INSN_COND_BRANCH_DELAY | |
2950 | | INSN_COND_BRANCH_LIKELY)) != 0; | |
2951 | } | |
2952 | ||
2953 | /* Return true if IP is a compact branch or jump. */ | |
2954 | ||
2955 | static inline bfd_boolean | |
2956 | compact_branch_p (const struct mips_cl_insn *ip) | |
2957 | { | |
2958 | if (mips_opts.mips16) | |
2959 | return (ip->insn_mo->pinfo & (MIPS16_INSN_UNCOND_BRANCH | |
2960 | | MIPS16_INSN_COND_BRANCH)) != 0; | |
2961 | else | |
2962 | return (ip->insn_mo->pinfo2 & (INSN2_UNCOND_BRANCH | |
2963 | | INSN2_COND_BRANCH)) != 0; | |
2964 | } | |
2965 | ||
2966 | /* Return true if IP is an unconditional branch or jump. */ | |
2967 | ||
2968 | static inline bfd_boolean | |
2969 | uncond_branch_p (const struct mips_cl_insn *ip) | |
2970 | { | |
2971 | return ((ip->insn_mo->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0 | |
2972 | || (mips_opts.mips16 | |
2973 | ? (ip->insn_mo->pinfo & MIPS16_INSN_UNCOND_BRANCH) != 0 | |
2974 | : (ip->insn_mo->pinfo2 & INSN2_UNCOND_BRANCH) != 0)); | |
2975 | } | |
2976 | ||
2977 | /* Return true if IP is a branch-likely instruction. */ | |
2978 | ||
2979 | static inline bfd_boolean | |
2980 | branch_likely_p (const struct mips_cl_insn *ip) | |
2981 | { | |
2982 | return (ip->insn_mo->pinfo & INSN_COND_BRANCH_LIKELY) != 0; | |
2983 | } | |
2984 | ||
14fe068b RS |
2985 | /* Return the type of nop that should be used to fill the delay slot |
2986 | of delayed branch IP. */ | |
2987 | ||
2988 | static struct mips_cl_insn * | |
2989 | get_delay_slot_nop (const struct mips_cl_insn *ip) | |
2990 | { | |
2991 | if (mips_opts.micromips | |
2992 | && (ip->insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
2993 | return µmips_nop32_insn; | |
2994 | return NOP_INSN; | |
2995 | } | |
2996 | ||
2309ddf2 | 2997 | /* Return the mask of core registers that IP reads or writes. */ |
df58fc94 RS |
2998 | |
2999 | static unsigned int | |
3000 | gpr_mod_mask (const struct mips_cl_insn *ip) | |
3001 | { | |
2309ddf2 | 3002 | unsigned long pinfo2; |
df58fc94 RS |
3003 | unsigned int mask; |
3004 | ||
3005 | mask = 0; | |
df58fc94 RS |
3006 | pinfo2 = ip->insn_mo->pinfo2; |
3007 | if (mips_opts.micromips) | |
3008 | { | |
df58fc94 RS |
3009 | if (pinfo2 & INSN2_MOD_GPR_MD) |
3010 | mask |= 1 << micromips_to_32_reg_d_map[EXTRACT_OPERAND (1, MD, *ip)]; | |
df58fc94 RS |
3011 | if (pinfo2 & INSN2_MOD_GPR_MF) |
3012 | mask |= 1 << micromips_to_32_reg_f_map[EXTRACT_OPERAND (1, MF, *ip)]; | |
df58fc94 RS |
3013 | if (pinfo2 & INSN2_MOD_SP) |
3014 | mask |= 1 << SP; | |
3015 | } | |
3016 | return mask; | |
3017 | } | |
3018 | ||
4c260379 RS |
3019 | /* Return the mask of core registers that IP reads. */ |
3020 | ||
3021 | static unsigned int | |
3022 | gpr_read_mask (const struct mips_cl_insn *ip) | |
3023 | { | |
3024 | unsigned long pinfo, pinfo2; | |
3025 | unsigned int mask; | |
3026 | ||
df58fc94 | 3027 | mask = gpr_mod_mask (ip); |
4c260379 RS |
3028 | pinfo = ip->insn_mo->pinfo; |
3029 | pinfo2 = ip->insn_mo->pinfo2; | |
3030 | if (mips_opts.mips16) | |
3031 | { | |
3032 | if (pinfo & MIPS16_INSN_READ_X) | |
3033 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)]; | |
3034 | if (pinfo & MIPS16_INSN_READ_Y) | |
3035 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)]; | |
3036 | if (pinfo & MIPS16_INSN_READ_T) | |
3037 | mask |= 1 << TREG; | |
3038 | if (pinfo & MIPS16_INSN_READ_SP) | |
3039 | mask |= 1 << SP; | |
3040 | if (pinfo & MIPS16_INSN_READ_31) | |
3041 | mask |= 1 << RA; | |
3042 | if (pinfo & MIPS16_INSN_READ_Z) | |
3043 | mask |= 1 << (mips16_to_32_reg_map | |
3044 | [MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip)]); | |
3045 | if (pinfo & MIPS16_INSN_READ_GPR_X) | |
3046 | mask |= 1 << MIPS16_EXTRACT_OPERAND (REGR32, *ip); | |
3047 | } | |
3048 | else | |
3049 | { | |
3050 | if (pinfo2 & INSN2_READ_GPR_D) | |
2309ddf2 | 3051 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); |
4c260379 | 3052 | if (pinfo & INSN_READ_GPR_T) |
2309ddf2 | 3053 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
4c260379 | 3054 | if (pinfo & INSN_READ_GPR_S) |
2309ddf2 MR |
3055 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); |
3056 | if (pinfo2 & INSN2_READ_GP) | |
3057 | mask |= 1 << GP; | |
3058 | if (pinfo2 & INSN2_READ_GPR_31) | |
3059 | mask |= 1 << RA; | |
4c260379 | 3060 | if (pinfo2 & INSN2_READ_GPR_Z) |
2309ddf2 | 3061 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RZ, *ip); |
4c260379 | 3062 | } |
2b0c8b40 MR |
3063 | if (mips_opts.micromips) |
3064 | { | |
3065 | if (pinfo2 & INSN2_READ_GPR_MC) | |
3066 | mask |= 1 << micromips_to_32_reg_c_map[EXTRACT_OPERAND (1, MC, *ip)]; | |
3067 | if (pinfo2 & INSN2_READ_GPR_ME) | |
3068 | mask |= 1 << micromips_to_32_reg_e_map[EXTRACT_OPERAND (1, ME, *ip)]; | |
3069 | if (pinfo2 & INSN2_READ_GPR_MG) | |
3070 | mask |= 1 << micromips_to_32_reg_g_map[EXTRACT_OPERAND (1, MG, *ip)]; | |
3071 | if (pinfo2 & INSN2_READ_GPR_MJ) | |
3072 | mask |= 1 << EXTRACT_OPERAND (1, MJ, *ip); | |
3073 | if (pinfo2 & INSN2_READ_GPR_MMN) | |
3074 | { | |
3075 | mask |= 1 << micromips_to_32_reg_m_map[EXTRACT_OPERAND (1, MM, *ip)]; | |
3076 | mask |= 1 << micromips_to_32_reg_n_map[EXTRACT_OPERAND (1, MN, *ip)]; | |
3077 | } | |
3078 | if (pinfo2 & INSN2_READ_GPR_MP) | |
3079 | mask |= 1 << EXTRACT_OPERAND (1, MP, *ip); | |
3080 | if (pinfo2 & INSN2_READ_GPR_MQ) | |
3081 | mask |= 1 << micromips_to_32_reg_q_map[EXTRACT_OPERAND (1, MQ, *ip)]; | |
3082 | } | |
fe35f09f RS |
3083 | /* Don't include register 0. */ |
3084 | return mask & ~1; | |
4c260379 RS |
3085 | } |
3086 | ||
3087 | /* Return the mask of core registers that IP writes. */ | |
3088 | ||
3089 | static unsigned int | |
3090 | gpr_write_mask (const struct mips_cl_insn *ip) | |
3091 | { | |
3092 | unsigned long pinfo, pinfo2; | |
3093 | unsigned int mask; | |
3094 | ||
df58fc94 | 3095 | mask = gpr_mod_mask (ip); |
4c260379 RS |
3096 | pinfo = ip->insn_mo->pinfo; |
3097 | pinfo2 = ip->insn_mo->pinfo2; | |
3098 | if (mips_opts.mips16) | |
3099 | { | |
3100 | if (pinfo & MIPS16_INSN_WRITE_X) | |
3101 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)]; | |
3102 | if (pinfo & MIPS16_INSN_WRITE_Y) | |
3103 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)]; | |
3104 | if (pinfo & MIPS16_INSN_WRITE_Z) | |
3105 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RZ, *ip)]; | |
3106 | if (pinfo & MIPS16_INSN_WRITE_T) | |
3107 | mask |= 1 << TREG; | |
3108 | if (pinfo & MIPS16_INSN_WRITE_SP) | |
3109 | mask |= 1 << SP; | |
3110 | if (pinfo & MIPS16_INSN_WRITE_31) | |
3111 | mask |= 1 << RA; | |
3112 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
3113 | mask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
3114 | } | |
3115 | else | |
3116 | { | |
3117 | if (pinfo & INSN_WRITE_GPR_D) | |
df58fc94 | 3118 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); |
4c260379 | 3119 | if (pinfo & INSN_WRITE_GPR_T) |
df58fc94 | 3120 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
2b0c8b40 | 3121 | if (pinfo & INSN_WRITE_GPR_S) |
2309ddf2 | 3122 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); |
4c260379 RS |
3123 | if (pinfo & INSN_WRITE_GPR_31) |
3124 | mask |= 1 << RA; | |
3125 | if (pinfo2 & INSN2_WRITE_GPR_Z) | |
df58fc94 | 3126 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RZ, *ip); |
4c260379 | 3127 | } |
2b0c8b40 MR |
3128 | if (mips_opts.micromips) |
3129 | { | |
3130 | if (pinfo2 & INSN2_WRITE_GPR_MB) | |
3131 | mask |= 1 << micromips_to_32_reg_b_map[EXTRACT_OPERAND (1, MB, *ip)]; | |
3132 | if (pinfo2 & INSN2_WRITE_GPR_MHI) | |
3133 | { | |
3134 | mask |= 1 << micromips_to_32_reg_h_map[EXTRACT_OPERAND (1, MH, *ip)]; | |
3135 | mask |= 1 << micromips_to_32_reg_i_map[EXTRACT_OPERAND (1, MI, *ip)]; | |
3136 | } | |
3137 | if (pinfo2 & INSN2_WRITE_GPR_MJ) | |
3138 | mask |= 1 << EXTRACT_OPERAND (1, MJ, *ip); | |
3139 | if (pinfo2 & INSN2_WRITE_GPR_MP) | |
3140 | mask |= 1 << EXTRACT_OPERAND (1, MP, *ip); | |
3141 | } | |
fe35f09f RS |
3142 | /* Don't include register 0. */ |
3143 | return mask & ~1; | |
4c260379 RS |
3144 | } |
3145 | ||
3146 | /* Return the mask of floating-point registers that IP reads. */ | |
3147 | ||
3148 | static unsigned int | |
3149 | fpr_read_mask (const struct mips_cl_insn *ip) | |
3150 | { | |
3151 | unsigned long pinfo, pinfo2; | |
3152 | unsigned int mask; | |
3153 | ||
3154 | mask = 0; | |
3155 | pinfo = ip->insn_mo->pinfo; | |
3156 | pinfo2 = ip->insn_mo->pinfo2; | |
2309ddf2 | 3157 | if (!mips_opts.mips16) |
df58fc94 RS |
3158 | { |
3159 | if (pinfo2 & INSN2_READ_FPR_D) | |
2309ddf2 | 3160 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FD, *ip); |
4c260379 | 3161 | if (pinfo & INSN_READ_FPR_S) |
df58fc94 | 3162 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FS, *ip); |
4c260379 | 3163 | if (pinfo & INSN_READ_FPR_T) |
df58fc94 | 3164 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FT, *ip); |
4c260379 | 3165 | if (pinfo & INSN_READ_FPR_R) |
df58fc94 | 3166 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FR, *ip); |
4c260379 | 3167 | if (pinfo2 & INSN2_READ_FPR_Z) |
df58fc94 | 3168 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FZ, *ip); |
4c260379 RS |
3169 | } |
3170 | /* Conservatively treat all operands to an FP_D instruction are doubles. | |
3171 | (This is overly pessimistic for things like cvt.d.s.) */ | |
3172 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
3173 | mask |= mask << 1; | |
3174 | return mask; | |
3175 | } | |
3176 | ||
3177 | /* Return the mask of floating-point registers that IP writes. */ | |
3178 | ||
3179 | static unsigned int | |
3180 | fpr_write_mask (const struct mips_cl_insn *ip) | |
3181 | { | |
3182 | unsigned long pinfo, pinfo2; | |
3183 | unsigned int mask; | |
3184 | ||
3185 | mask = 0; | |
3186 | pinfo = ip->insn_mo->pinfo; | |
3187 | pinfo2 = ip->insn_mo->pinfo2; | |
2309ddf2 | 3188 | if (!mips_opts.mips16) |
4c260379 RS |
3189 | { |
3190 | if (pinfo & INSN_WRITE_FPR_D) | |
df58fc94 | 3191 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FD, *ip); |
4c260379 | 3192 | if (pinfo & INSN_WRITE_FPR_S) |
df58fc94 | 3193 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FS, *ip); |
4c260379 | 3194 | if (pinfo & INSN_WRITE_FPR_T) |
df58fc94 | 3195 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FT, *ip); |
4c260379 | 3196 | if (pinfo2 & INSN2_WRITE_FPR_Z) |
df58fc94 | 3197 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FZ, *ip); |
4c260379 RS |
3198 | } |
3199 | /* Conservatively treat all operands to an FP_D instruction are doubles. | |
3200 | (This is overly pessimistic for things like cvt.s.d.) */ | |
3201 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
3202 | mask |= mask << 1; | |
3203 | return mask; | |
3204 | } | |
3205 | ||
71400594 RS |
3206 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
3207 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
3208 | by VR4120 errata. */ | |
4d7206a2 | 3209 | |
71400594 RS |
3210 | static unsigned int |
3211 | classify_vr4120_insn (const char *name) | |
252b5132 | 3212 | { |
71400594 RS |
3213 | if (strncmp (name, "macc", 4) == 0) |
3214 | return FIX_VR4120_MACC; | |
3215 | if (strncmp (name, "dmacc", 5) == 0) | |
3216 | return FIX_VR4120_DMACC; | |
3217 | if (strncmp (name, "mult", 4) == 0) | |
3218 | return FIX_VR4120_MULT; | |
3219 | if (strncmp (name, "dmult", 5) == 0) | |
3220 | return FIX_VR4120_DMULT; | |
3221 | if (strstr (name, "div")) | |
3222 | return FIX_VR4120_DIV; | |
3223 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
3224 | return FIX_VR4120_MTHILO; | |
3225 | return NUM_FIX_VR4120_CLASSES; | |
3226 | } | |
252b5132 | 3227 | |
ff239038 CM |
3228 | #define INSN_ERET 0x42000018 |
3229 | #define INSN_DERET 0x4200001f | |
3230 | ||
71400594 RS |
3231 | /* Return the number of instructions that must separate INSN1 and INSN2, |
3232 | where INSN1 is the earlier instruction. Return the worst-case value | |
3233 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 3234 | |
71400594 RS |
3235 | static unsigned int |
3236 | insns_between (const struct mips_cl_insn *insn1, | |
3237 | const struct mips_cl_insn *insn2) | |
3238 | { | |
3239 | unsigned long pinfo1, pinfo2; | |
4c260379 | 3240 | unsigned int mask; |
71400594 RS |
3241 | |
3242 | /* This function needs to know which pinfo flags are set for INSN2 | |
3243 | and which registers INSN2 uses. The former is stored in PINFO2 and | |
4c260379 RS |
3244 | the latter is tested via INSN2_USES_GPR. If INSN2 is null, PINFO2 |
3245 | will have every flag set and INSN2_USES_GPR will always return true. */ | |
71400594 RS |
3246 | pinfo1 = insn1->insn_mo->pinfo; |
3247 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 3248 | |
4c260379 RS |
3249 | #define INSN2_USES_GPR(REG) \ |
3250 | (insn2 == NULL || (gpr_read_mask (insn2) & (1U << (REG))) != 0) | |
71400594 RS |
3251 | |
3252 | /* For most targets, write-after-read dependencies on the HI and LO | |
3253 | registers must be separated by at least two instructions. */ | |
3254 | if (!hilo_interlocks) | |
252b5132 | 3255 | { |
71400594 RS |
3256 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
3257 | return 2; | |
3258 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
3259 | return 2; | |
3260 | } | |
3261 | ||
3262 | /* If we're working around r7000 errata, there must be two instructions | |
3263 | between an mfhi or mflo and any instruction that uses the result. */ | |
3264 | if (mips_7000_hilo_fix | |
df58fc94 | 3265 | && !mips_opts.micromips |
71400594 | 3266 | && MF_HILO_INSN (pinfo1) |
df58fc94 | 3267 | && INSN2_USES_GPR (EXTRACT_OPERAND (0, RD, *insn1))) |
71400594 RS |
3268 | return 2; |
3269 | ||
ff239038 CM |
3270 | /* If we're working around 24K errata, one instruction is required |
3271 | if an ERET or DERET is followed by a branch instruction. */ | |
df58fc94 | 3272 | if (mips_fix_24k && !mips_opts.micromips) |
ff239038 CM |
3273 | { |
3274 | if (insn1->insn_opcode == INSN_ERET | |
3275 | || insn1->insn_opcode == INSN_DERET) | |
3276 | { | |
3277 | if (insn2 == NULL | |
3278 | || insn2->insn_opcode == INSN_ERET | |
3279 | || insn2->insn_opcode == INSN_DERET | |
11625dd8 | 3280 | || delayed_branch_p (insn2)) |
ff239038 CM |
3281 | return 1; |
3282 | } | |
3283 | } | |
3284 | ||
71400594 RS |
3285 | /* If working around VR4120 errata, check for combinations that need |
3286 | a single intervening instruction. */ | |
df58fc94 | 3287 | if (mips_fix_vr4120 && !mips_opts.micromips) |
71400594 RS |
3288 | { |
3289 | unsigned int class1, class2; | |
252b5132 | 3290 | |
71400594 RS |
3291 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
3292 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 3293 | { |
71400594 RS |
3294 | if (insn2 == NULL) |
3295 | return 1; | |
3296 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
3297 | if (vr4120_conflicts[class1] & (1 << class2)) | |
3298 | return 1; | |
252b5132 | 3299 | } |
71400594 RS |
3300 | } |
3301 | ||
df58fc94 | 3302 | if (!HAVE_CODE_COMPRESSION) |
71400594 RS |
3303 | { |
3304 | /* Check for GPR or coprocessor load delays. All such delays | |
3305 | are on the RT register. */ | |
3306 | /* Itbl support may require additional care here. */ | |
3307 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY_DELAY)) | |
3308 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC_DELAY))) | |
252b5132 | 3309 | { |
71400594 | 3310 | know (pinfo1 & INSN_WRITE_GPR_T); |
df58fc94 | 3311 | if (INSN2_USES_GPR (EXTRACT_OPERAND (0, RT, *insn1))) |
71400594 RS |
3312 | return 1; |
3313 | } | |
3314 | ||
3315 | /* Check for generic coprocessor hazards. | |
3316 | ||
3317 | This case is not handled very well. There is no special | |
3318 | knowledge of CP0 handling, and the coprocessors other than | |
3319 | the floating point unit are not distinguished at all. */ | |
3320 | /* Itbl support may require additional care here. FIXME! | |
3321 | Need to modify this to include knowledge about | |
3322 | user specified delays! */ | |
3323 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE_DELAY)) | |
3324 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) | |
3325 | { | |
3326 | /* Handle cases where INSN1 writes to a known general coprocessor | |
3327 | register. There must be a one instruction delay before INSN2 | |
3328 | if INSN2 reads that register, otherwise no delay is needed. */ | |
4c260379 RS |
3329 | mask = fpr_write_mask (insn1); |
3330 | if (mask != 0) | |
252b5132 | 3331 | { |
4c260379 | 3332 | if (!insn2 || (mask & fpr_read_mask (insn2)) != 0) |
71400594 | 3333 | return 1; |
252b5132 RH |
3334 | } |
3335 | else | |
3336 | { | |
71400594 RS |
3337 | /* Read-after-write dependencies on the control registers |
3338 | require a two-instruction gap. */ | |
3339 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
3340 | && (pinfo2 & INSN_READ_COND_CODE)) | |
3341 | return 2; | |
3342 | ||
3343 | /* We don't know exactly what INSN1 does. If INSN2 is | |
3344 | also a coprocessor instruction, assume there must be | |
3345 | a one instruction gap. */ | |
3346 | if (pinfo2 & INSN_COP) | |
3347 | return 1; | |
252b5132 RH |
3348 | } |
3349 | } | |
6b76fefe | 3350 | |
71400594 RS |
3351 | /* Check for read-after-write dependencies on the coprocessor |
3352 | control registers in cases where INSN1 does not need a general | |
3353 | coprocessor delay. This means that INSN1 is a floating point | |
3354 | comparison instruction. */ | |
3355 | /* Itbl support may require additional care here. */ | |
3356 | else if (!cop_interlocks | |
3357 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
3358 | && (pinfo2 & INSN_READ_COND_CODE)) | |
3359 | return 1; | |
3360 | } | |
6b76fefe | 3361 | |
4c260379 | 3362 | #undef INSN2_USES_GPR |
6b76fefe | 3363 | |
71400594 RS |
3364 | return 0; |
3365 | } | |
6b76fefe | 3366 | |
7d8e00cf RS |
3367 | /* Return the number of nops that would be needed to work around the |
3368 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
932d1a1b RS |
3369 | the MAX_VR4130_NOPS instructions described by HIST. Ignore hazards |
3370 | that are contained within the first IGNORE instructions of HIST. */ | |
7d8e00cf RS |
3371 | |
3372 | static int | |
932d1a1b | 3373 | nops_for_vr4130 (int ignore, const struct mips_cl_insn *hist, |
7d8e00cf RS |
3374 | const struct mips_cl_insn *insn) |
3375 | { | |
4c260379 RS |
3376 | int i, j; |
3377 | unsigned int mask; | |
7d8e00cf RS |
3378 | |
3379 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
3380 | are not affected by the errata. */ | |
3381 | if (insn != 0 | |
3382 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
3383 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
3384 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
3385 | return 0; | |
3386 | ||
3387 | /* Search for the first MFLO or MFHI. */ | |
3388 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
91d6fa6a | 3389 | if (MF_HILO_INSN (hist[i].insn_mo->pinfo)) |
7d8e00cf RS |
3390 | { |
3391 | /* Extract the destination register. */ | |
4c260379 | 3392 | mask = gpr_write_mask (&hist[i]); |
7d8e00cf RS |
3393 | |
3394 | /* No nops are needed if INSN reads that register. */ | |
4c260379 | 3395 | if (insn != NULL && (gpr_read_mask (insn) & mask) != 0) |
7d8e00cf RS |
3396 | return 0; |
3397 | ||
3398 | /* ...or if any of the intervening instructions do. */ | |
3399 | for (j = 0; j < i; j++) | |
4c260379 | 3400 | if (gpr_read_mask (&hist[j]) & mask) |
7d8e00cf RS |
3401 | return 0; |
3402 | ||
932d1a1b RS |
3403 | if (i >= ignore) |
3404 | return MAX_VR4130_NOPS - i; | |
7d8e00cf RS |
3405 | } |
3406 | return 0; | |
3407 | } | |
3408 | ||
15be625d CM |
3409 | #define BASE_REG_EQ(INSN1, INSN2) \ |
3410 | ((((INSN1) >> OP_SH_RS) & OP_MASK_RS) \ | |
3411 | == (((INSN2) >> OP_SH_RS) & OP_MASK_RS)) | |
3412 | ||
3413 | /* Return the minimum alignment for this store instruction. */ | |
3414 | ||
3415 | static int | |
3416 | fix_24k_align_to (const struct mips_opcode *mo) | |
3417 | { | |
3418 | if (strcmp (mo->name, "sh") == 0) | |
3419 | return 2; | |
3420 | ||
3421 | if (strcmp (mo->name, "swc1") == 0 | |
3422 | || strcmp (mo->name, "swc2") == 0 | |
3423 | || strcmp (mo->name, "sw") == 0 | |
3424 | || strcmp (mo->name, "sc") == 0 | |
3425 | || strcmp (mo->name, "s.s") == 0) | |
3426 | return 4; | |
3427 | ||
3428 | if (strcmp (mo->name, "sdc1") == 0 | |
3429 | || strcmp (mo->name, "sdc2") == 0 | |
3430 | || strcmp (mo->name, "s.d") == 0) | |
3431 | return 8; | |
3432 | ||
3433 | /* sb, swl, swr */ | |
3434 | return 1; | |
3435 | } | |
3436 | ||
3437 | struct fix_24k_store_info | |
3438 | { | |
3439 | /* Immediate offset, if any, for this store instruction. */ | |
3440 | short off; | |
3441 | /* Alignment required by this store instruction. */ | |
3442 | int align_to; | |
3443 | /* True for register offsets. */ | |
3444 | int register_offset; | |
3445 | }; | |
3446 | ||
3447 | /* Comparison function used by qsort. */ | |
3448 | ||
3449 | static int | |
3450 | fix_24k_sort (const void *a, const void *b) | |
3451 | { | |
3452 | const struct fix_24k_store_info *pos1 = a; | |
3453 | const struct fix_24k_store_info *pos2 = b; | |
3454 | ||
3455 | return (pos1->off - pos2->off); | |
3456 | } | |
3457 | ||
3458 | /* INSN is a store instruction. Try to record the store information | |
3459 | in STINFO. Return false if the information isn't known. */ | |
3460 | ||
3461 | static bfd_boolean | |
3462 | fix_24k_record_store_info (struct fix_24k_store_info *stinfo, | |
ab9794cf | 3463 | const struct mips_cl_insn *insn) |
15be625d CM |
3464 | { |
3465 | /* The instruction must have a known offset. */ | |
3466 | if (!insn->complete_p || !strstr (insn->insn_mo->args, "o(")) | |
3467 | return FALSE; | |
3468 | ||
3469 | stinfo->off = (insn->insn_opcode >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE; | |
3470 | stinfo->align_to = fix_24k_align_to (insn->insn_mo); | |
3471 | return TRUE; | |
3472 | } | |
3473 | ||
932d1a1b RS |
3474 | /* Return the number of nops that would be needed to work around the 24k |
3475 | "lost data on stores during refill" errata if instruction INSN | |
3476 | immediately followed the 2 instructions described by HIST. | |
3477 | Ignore hazards that are contained within the first IGNORE | |
3478 | instructions of HIST. | |
3479 | ||
3480 | Problem: The FSB (fetch store buffer) acts as an intermediate buffer | |
3481 | for the data cache refills and store data. The following describes | |
3482 | the scenario where the store data could be lost. | |
3483 | ||
3484 | * A data cache miss, due to either a load or a store, causing fill | |
3485 | data to be supplied by the memory subsystem | |
3486 | * The first three doublewords of fill data are returned and written | |
3487 | into the cache | |
3488 | * A sequence of four stores occurs in consecutive cycles around the | |
3489 | final doubleword of the fill: | |
3490 | * Store A | |
3491 | * Store B | |
3492 | * Store C | |
3493 | * Zero, One or more instructions | |
3494 | * Store D | |
3495 | ||
3496 | The four stores A-D must be to different doublewords of the line that | |
3497 | is being filled. The fourth instruction in the sequence above permits | |
3498 | the fill of the final doubleword to be transferred from the FSB into | |
3499 | the cache. In the sequence above, the stores may be either integer | |
3500 | (sb, sh, sw, swr, swl, sc) or coprocessor (swc1/swc2, sdc1/sdc2, | |
3501 | swxc1, sdxc1, suxc1) stores, as long as the four stores are to | |
3502 | different doublewords on the line. If the floating point unit is | |
3503 | running in 1:2 mode, it is not possible to create the sequence above | |
3504 | using only floating point store instructions. | |
15be625d CM |
3505 | |
3506 | In this case, the cache line being filled is incorrectly marked | |
3507 | invalid, thereby losing the data from any store to the line that | |
3508 | occurs between the original miss and the completion of the five | |
3509 | cycle sequence shown above. | |
3510 | ||
932d1a1b | 3511 | The workarounds are: |
15be625d | 3512 | |
932d1a1b RS |
3513 | * Run the data cache in write-through mode. |
3514 | * Insert a non-store instruction between | |
3515 | Store A and Store B or Store B and Store C. */ | |
15be625d CM |
3516 | |
3517 | static int | |
932d1a1b | 3518 | nops_for_24k (int ignore, const struct mips_cl_insn *hist, |
15be625d CM |
3519 | const struct mips_cl_insn *insn) |
3520 | { | |
3521 | struct fix_24k_store_info pos[3]; | |
3522 | int align, i, base_offset; | |
3523 | ||
932d1a1b RS |
3524 | if (ignore >= 2) |
3525 | return 0; | |
3526 | ||
ab9794cf RS |
3527 | /* If the previous instruction wasn't a store, there's nothing to |
3528 | worry about. */ | |
15be625d CM |
3529 | if ((hist[0].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) |
3530 | return 0; | |
3531 | ||
ab9794cf RS |
3532 | /* If the instructions after the previous one are unknown, we have |
3533 | to assume the worst. */ | |
3534 | if (!insn) | |
15be625d CM |
3535 | return 1; |
3536 | ||
ab9794cf RS |
3537 | /* Check whether we are dealing with three consecutive stores. */ |
3538 | if ((insn->insn_mo->pinfo & INSN_STORE_MEMORY) == 0 | |
3539 | || (hist[1].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) | |
15be625d CM |
3540 | return 0; |
3541 | ||
3542 | /* If we don't know the relationship between the store addresses, | |
3543 | assume the worst. */ | |
ab9794cf | 3544 | if (!BASE_REG_EQ (insn->insn_opcode, hist[0].insn_opcode) |
15be625d CM |
3545 | || !BASE_REG_EQ (insn->insn_opcode, hist[1].insn_opcode)) |
3546 | return 1; | |
3547 | ||
3548 | if (!fix_24k_record_store_info (&pos[0], insn) | |
3549 | || !fix_24k_record_store_info (&pos[1], &hist[0]) | |
3550 | || !fix_24k_record_store_info (&pos[2], &hist[1])) | |
3551 | return 1; | |
3552 | ||
3553 | qsort (&pos, 3, sizeof (struct fix_24k_store_info), fix_24k_sort); | |
3554 | ||
3555 | /* Pick a value of ALIGN and X such that all offsets are adjusted by | |
3556 | X bytes and such that the base register + X is known to be aligned | |
3557 | to align bytes. */ | |
3558 | ||
3559 | if (((insn->insn_opcode >> OP_SH_RS) & OP_MASK_RS) == SP) | |
3560 | align = 8; | |
3561 | else | |
3562 | { | |
3563 | align = pos[0].align_to; | |
3564 | base_offset = pos[0].off; | |
3565 | for (i = 1; i < 3; i++) | |
3566 | if (align < pos[i].align_to) | |
3567 | { | |
3568 | align = pos[i].align_to; | |
3569 | base_offset = pos[i].off; | |
3570 | } | |
3571 | for (i = 0; i < 3; i++) | |
3572 | pos[i].off -= base_offset; | |
3573 | } | |
3574 | ||
3575 | pos[0].off &= ~align + 1; | |
3576 | pos[1].off &= ~align + 1; | |
3577 | pos[2].off &= ~align + 1; | |
3578 | ||
3579 | /* If any two stores write to the same chunk, they also write to the | |
3580 | same doubleword. The offsets are still sorted at this point. */ | |
3581 | if (pos[0].off == pos[1].off || pos[1].off == pos[2].off) | |
3582 | return 0; | |
3583 | ||
3584 | /* A range of at least 9 bytes is needed for the stores to be in | |
3585 | non-overlapping doublewords. */ | |
3586 | if (pos[2].off - pos[0].off <= 8) | |
3587 | return 0; | |
3588 | ||
3589 | if (pos[2].off - pos[1].off >= 24 | |
3590 | || pos[1].off - pos[0].off >= 24 | |
3591 | || pos[2].off - pos[0].off >= 32) | |
3592 | return 0; | |
3593 | ||
3594 | return 1; | |
3595 | } | |
3596 | ||
71400594 | 3597 | /* Return the number of nops that would be needed if instruction INSN |
91d6fa6a | 3598 | immediately followed the MAX_NOPS instructions given by HIST, |
932d1a1b RS |
3599 | where HIST[0] is the most recent instruction. Ignore hazards |
3600 | between INSN and the first IGNORE instructions in HIST. | |
3601 | ||
3602 | If INSN is null, return the worse-case number of nops for any | |
3603 | instruction. */ | |
bdaaa2e1 | 3604 | |
71400594 | 3605 | static int |
932d1a1b | 3606 | nops_for_insn (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
3607 | const struct mips_cl_insn *insn) |
3608 | { | |
3609 | int i, nops, tmp_nops; | |
bdaaa2e1 | 3610 | |
71400594 | 3611 | nops = 0; |
932d1a1b | 3612 | for (i = ignore; i < MAX_DELAY_NOPS; i++) |
65b02341 | 3613 | { |
91d6fa6a | 3614 | tmp_nops = insns_between (hist + i, insn) - i; |
65b02341 RS |
3615 | if (tmp_nops > nops) |
3616 | nops = tmp_nops; | |
3617 | } | |
7d8e00cf | 3618 | |
df58fc94 | 3619 | if (mips_fix_vr4130 && !mips_opts.micromips) |
7d8e00cf | 3620 | { |
932d1a1b | 3621 | tmp_nops = nops_for_vr4130 (ignore, hist, insn); |
7d8e00cf RS |
3622 | if (tmp_nops > nops) |
3623 | nops = tmp_nops; | |
3624 | } | |
3625 | ||
df58fc94 | 3626 | if (mips_fix_24k && !mips_opts.micromips) |
15be625d | 3627 | { |
932d1a1b | 3628 | tmp_nops = nops_for_24k (ignore, hist, insn); |
15be625d CM |
3629 | if (tmp_nops > nops) |
3630 | nops = tmp_nops; | |
3631 | } | |
3632 | ||
71400594 RS |
3633 | return nops; |
3634 | } | |
252b5132 | 3635 | |
71400594 | 3636 | /* The variable arguments provide NUM_INSNS extra instructions that |
91d6fa6a | 3637 | might be added to HIST. Return the largest number of nops that |
932d1a1b RS |
3638 | would be needed after the extended sequence, ignoring hazards |
3639 | in the first IGNORE instructions. */ | |
252b5132 | 3640 | |
71400594 | 3641 | static int |
932d1a1b RS |
3642 | nops_for_sequence (int num_insns, int ignore, |
3643 | const struct mips_cl_insn *hist, ...) | |
71400594 RS |
3644 | { |
3645 | va_list args; | |
3646 | struct mips_cl_insn buffer[MAX_NOPS]; | |
3647 | struct mips_cl_insn *cursor; | |
3648 | int nops; | |
3649 | ||
91d6fa6a | 3650 | va_start (args, hist); |
71400594 | 3651 | cursor = buffer + num_insns; |
91d6fa6a | 3652 | memcpy (cursor, hist, (MAX_NOPS - num_insns) * sizeof (*cursor)); |
71400594 RS |
3653 | while (cursor > buffer) |
3654 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
3655 | ||
932d1a1b | 3656 | nops = nops_for_insn (ignore, buffer, NULL); |
71400594 RS |
3657 | va_end (args); |
3658 | return nops; | |
3659 | } | |
252b5132 | 3660 | |
71400594 RS |
3661 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
3662 | worst-case delay for the branch target. */ | |
252b5132 | 3663 | |
71400594 | 3664 | static int |
932d1a1b | 3665 | nops_for_insn_or_target (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
3666 | const struct mips_cl_insn *insn) |
3667 | { | |
3668 | int nops, tmp_nops; | |
60b63b72 | 3669 | |
932d1a1b | 3670 | nops = nops_for_insn (ignore, hist, insn); |
11625dd8 | 3671 | if (delayed_branch_p (insn)) |
71400594 | 3672 | { |
932d1a1b | 3673 | tmp_nops = nops_for_sequence (2, ignore ? ignore + 2 : 0, |
14fe068b | 3674 | hist, insn, get_delay_slot_nop (insn)); |
71400594 RS |
3675 | if (tmp_nops > nops) |
3676 | nops = tmp_nops; | |
3677 | } | |
11625dd8 | 3678 | else if (compact_branch_p (insn)) |
71400594 | 3679 | { |
932d1a1b | 3680 | tmp_nops = nops_for_sequence (1, ignore ? ignore + 1 : 0, hist, insn); |
71400594 RS |
3681 | if (tmp_nops > nops) |
3682 | nops = tmp_nops; | |
3683 | } | |
3684 | return nops; | |
3685 | } | |
3686 | ||
c67a084a NC |
3687 | /* Fix NOP issue: Replace nops by "or at,at,zero". */ |
3688 | ||
3689 | static void | |
3690 | fix_loongson2f_nop (struct mips_cl_insn * ip) | |
3691 | { | |
df58fc94 | 3692 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
3693 | if (strcmp (ip->insn_mo->name, "nop") == 0) |
3694 | ip->insn_opcode = LOONGSON2F_NOP_INSN; | |
3695 | } | |
3696 | ||
3697 | /* Fix Jump Issue: Eliminate instruction fetch from outside 256M region | |
3698 | jr target pc &= 'hffff_ffff_cfff_ffff. */ | |
3699 | ||
3700 | static void | |
3701 | fix_loongson2f_jump (struct mips_cl_insn * ip) | |
3702 | { | |
df58fc94 | 3703 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
3704 | if (strcmp (ip->insn_mo->name, "j") == 0 |
3705 | || strcmp (ip->insn_mo->name, "jr") == 0 | |
3706 | || strcmp (ip->insn_mo->name, "jalr") == 0) | |
3707 | { | |
3708 | int sreg; | |
3709 | expressionS ep; | |
3710 | ||
3711 | if (! mips_opts.at) | |
3712 | return; | |
3713 | ||
df58fc94 | 3714 | sreg = EXTRACT_OPERAND (0, RS, *ip); |
c67a084a NC |
3715 | if (sreg == ZERO || sreg == KT0 || sreg == KT1 || sreg == ATREG) |
3716 | return; | |
3717 | ||
3718 | ep.X_op = O_constant; | |
3719 | ep.X_add_number = 0xcfff0000; | |
3720 | macro_build (&ep, "lui", "t,u", ATREG, BFD_RELOC_HI16); | |
3721 | ep.X_add_number = 0xffff; | |
3722 | macro_build (&ep, "ori", "t,r,i", ATREG, ATREG, BFD_RELOC_LO16); | |
3723 | macro_build (NULL, "and", "d,v,t", sreg, sreg, ATREG); | |
3724 | } | |
3725 | } | |
3726 | ||
3727 | static void | |
3728 | fix_loongson2f (struct mips_cl_insn * ip) | |
3729 | { | |
3730 | if (mips_fix_loongson2f_nop) | |
3731 | fix_loongson2f_nop (ip); | |
3732 | ||
3733 | if (mips_fix_loongson2f_jump) | |
3734 | fix_loongson2f_jump (ip); | |
3735 | } | |
3736 | ||
a4e06468 RS |
3737 | /* IP is a branch that has a delay slot, and we need to fill it |
3738 | automatically. Return true if we can do that by swapping IP | |
3739 | with the previous instruction. */ | |
3740 | ||
3741 | static bfd_boolean | |
3742 | can_swap_branch_p (struct mips_cl_insn *ip) | |
3743 | { | |
2b0c8b40 | 3744 | unsigned long pinfo, pinfo2, prev_pinfo, prev_pinfo2; |
a4e06468 RS |
3745 | unsigned int gpr_read, gpr_write, prev_gpr_read, prev_gpr_write; |
3746 | ||
3747 | /* -O2 and above is required for this optimization. */ | |
3748 | if (mips_optimize < 2) | |
3749 | return FALSE; | |
3750 | ||
3751 | /* If we have seen .set volatile or .set nomove, don't optimize. */ | |
3752 | if (mips_opts.nomove) | |
3753 | return FALSE; | |
3754 | ||
3755 | /* We can't swap if the previous instruction's position is fixed. */ | |
3756 | if (history[0].fixed_p) | |
3757 | return FALSE; | |
3758 | ||
3759 | /* If the previous previous insn was in a .set noreorder, we can't | |
3760 | swap. Actually, the MIPS assembler will swap in this situation. | |
3761 | However, gcc configured -with-gnu-as will generate code like | |
3762 | ||
3763 | .set noreorder | |
3764 | lw $4,XXX | |
3765 | .set reorder | |
3766 | INSN | |
3767 | bne $4,$0,foo | |
3768 | ||
3769 | in which we can not swap the bne and INSN. If gcc is not configured | |
3770 | -with-gnu-as, it does not output the .set pseudo-ops. */ | |
3771 | if (history[1].noreorder_p) | |
3772 | return FALSE; | |
3773 | ||
87333bb7 MR |
3774 | /* If the previous instruction had a fixup in mips16 mode, we can not swap. |
3775 | This means that the previous instruction was a 4-byte one anyhow. */ | |
a4e06468 RS |
3776 | if (mips_opts.mips16 && history[0].fixp[0]) |
3777 | return FALSE; | |
3778 | ||
3779 | /* If the branch is itself the target of a branch, we can not swap. | |
3780 | We cheat on this; all we check for is whether there is a label on | |
3781 | this instruction. If there are any branches to anything other than | |
3782 | a label, users must use .set noreorder. */ | |
3783 | if (seg_info (now_seg)->label_list) | |
3784 | return FALSE; | |
3785 | ||
3786 | /* If the previous instruction is in a variant frag other than this | |
2309ddf2 | 3787 | branch's one, we cannot do the swap. This does not apply to |
9301f9c3 MR |
3788 | MIPS16 code, which uses variant frags for different purposes. */ |
3789 | if (!mips_opts.mips16 | |
a4e06468 RS |
3790 | && history[0].frag |
3791 | && history[0].frag->fr_type == rs_machine_dependent) | |
3792 | return FALSE; | |
3793 | ||
bcd530a7 RS |
3794 | /* We do not swap with instructions that cannot architecturally |
3795 | be placed in a branch delay slot, such as SYNC or ERET. We | |
3796 | also refrain from swapping with a trap instruction, since it | |
3797 | complicates trap handlers to have the trap instruction be in | |
3798 | a delay slot. */ | |
a4e06468 | 3799 | prev_pinfo = history[0].insn_mo->pinfo; |
bcd530a7 | 3800 | if (prev_pinfo & INSN_NO_DELAY_SLOT) |
a4e06468 RS |
3801 | return FALSE; |
3802 | ||
3803 | /* Check for conflicts between the branch and the instructions | |
3804 | before the candidate delay slot. */ | |
3805 | if (nops_for_insn (0, history + 1, ip) > 0) | |
3806 | return FALSE; | |
3807 | ||
3808 | /* Check for conflicts between the swapped sequence and the | |
3809 | target of the branch. */ | |
3810 | if (nops_for_sequence (2, 0, history + 1, ip, history) > 0) | |
3811 | return FALSE; | |
3812 | ||
3813 | /* If the branch reads a register that the previous | |
3814 | instruction sets, we can not swap. */ | |
3815 | gpr_read = gpr_read_mask (ip); | |
3816 | prev_gpr_write = gpr_write_mask (&history[0]); | |
3817 | if (gpr_read & prev_gpr_write) | |
3818 | return FALSE; | |
3819 | ||
3820 | /* If the branch writes a register that the previous | |
3821 | instruction sets, we can not swap. */ | |
3822 | gpr_write = gpr_write_mask (ip); | |
3823 | if (gpr_write & prev_gpr_write) | |
3824 | return FALSE; | |
3825 | ||
3826 | /* If the branch writes a register that the previous | |
3827 | instruction reads, we can not swap. */ | |
3828 | prev_gpr_read = gpr_read_mask (&history[0]); | |
3829 | if (gpr_write & prev_gpr_read) | |
3830 | return FALSE; | |
3831 | ||
3832 | /* If one instruction sets a condition code and the | |
3833 | other one uses a condition code, we can not swap. */ | |
3834 | pinfo = ip->insn_mo->pinfo; | |
3835 | if ((pinfo & INSN_READ_COND_CODE) | |
3836 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
3837 | return FALSE; | |
3838 | if ((pinfo & INSN_WRITE_COND_CODE) | |
3839 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
3840 | return FALSE; | |
3841 | ||
3842 | /* If the previous instruction uses the PC, we can not swap. */ | |
2b0c8b40 | 3843 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
a4e06468 RS |
3844 | if (mips_opts.mips16 && (prev_pinfo & MIPS16_INSN_READ_PC)) |
3845 | return FALSE; | |
2b0c8b40 MR |
3846 | if (mips_opts.micromips && (prev_pinfo2 & INSN2_READ_PC)) |
3847 | return FALSE; | |
a4e06468 | 3848 | |
df58fc94 RS |
3849 | /* If the previous instruction has an incorrect size for a fixed |
3850 | branch delay slot in microMIPS mode, we cannot swap. */ | |
2309ddf2 MR |
3851 | pinfo2 = ip->insn_mo->pinfo2; |
3852 | if (mips_opts.micromips | |
3853 | && (pinfo2 & INSN2_BRANCH_DELAY_16BIT) | |
3854 | && insn_length (history) != 2) | |
3855 | return FALSE; | |
3856 | if (mips_opts.micromips | |
3857 | && (pinfo2 & INSN2_BRANCH_DELAY_32BIT) | |
3858 | && insn_length (history) != 4) | |
3859 | return FALSE; | |
3860 | ||
a4e06468 RS |
3861 | return TRUE; |
3862 | } | |
3863 | ||
3864 | /* Decide how we should add IP to the instruction stream. */ | |
3865 | ||
3866 | static enum append_method | |
3867 | get_append_method (struct mips_cl_insn *ip) | |
3868 | { | |
3869 | unsigned long pinfo; | |
3870 | ||
3871 | /* The relaxed version of a macro sequence must be inherently | |
3872 | hazard-free. */ | |
3873 | if (mips_relax.sequence == 2) | |
3874 | return APPEND_ADD; | |
3875 | ||
3876 | /* We must not dabble with instructions in a ".set norerorder" block. */ | |
3877 | if (mips_opts.noreorder) | |
3878 | return APPEND_ADD; | |
3879 | ||
3880 | /* Otherwise, it's our responsibility to fill branch delay slots. */ | |
11625dd8 | 3881 | if (delayed_branch_p (ip)) |
a4e06468 | 3882 | { |
11625dd8 | 3883 | if (!branch_likely_p (ip) && can_swap_branch_p (ip)) |
a4e06468 RS |
3884 | return APPEND_SWAP; |
3885 | ||
11625dd8 | 3886 | pinfo = ip->insn_mo->pinfo; |
a4e06468 RS |
3887 | if (mips_opts.mips16 |
3888 | && ISA_SUPPORTS_MIPS16E | |
a4e06468 RS |
3889 | && (pinfo & (MIPS16_INSN_READ_X | MIPS16_INSN_READ_31))) |
3890 | return APPEND_ADD_COMPACT; | |
3891 | ||
3892 | return APPEND_ADD_WITH_NOP; | |
3893 | } | |
3894 | ||
a4e06468 RS |
3895 | return APPEND_ADD; |
3896 | } | |
3897 | ||
ceb94aa5 RS |
3898 | /* IP is a MIPS16 instruction whose opcode we have just changed. |
3899 | Point IP->insn_mo to the new opcode's definition. */ | |
3900 | ||
3901 | static void | |
3902 | find_altered_mips16_opcode (struct mips_cl_insn *ip) | |
3903 | { | |
3904 | const struct mips_opcode *mo, *end; | |
3905 | ||
3906 | end = &mips16_opcodes[bfd_mips16_num_opcodes]; | |
3907 | for (mo = ip->insn_mo; mo < end; mo++) | |
3908 | if ((ip->insn_opcode & mo->mask) == mo->match) | |
3909 | { | |
3910 | ip->insn_mo = mo; | |
3911 | return; | |
3912 | } | |
3913 | abort (); | |
3914 | } | |
3915 | ||
df58fc94 RS |
3916 | /* For microMIPS macros, we need to generate a local number label |
3917 | as the target of branches. */ | |
3918 | #define MICROMIPS_LABEL_CHAR '\037' | |
3919 | static unsigned long micromips_target_label; | |
3920 | static char micromips_target_name[32]; | |
3921 | ||
3922 | static char * | |
3923 | micromips_label_name (void) | |
3924 | { | |
3925 | char *p = micromips_target_name; | |
3926 | char symbol_name_temporary[24]; | |
3927 | unsigned long l; | |
3928 | int i; | |
3929 | ||
3930 | if (*p) | |
3931 | return p; | |
3932 | ||
3933 | i = 0; | |
3934 | l = micromips_target_label; | |
3935 | #ifdef LOCAL_LABEL_PREFIX | |
3936 | *p++ = LOCAL_LABEL_PREFIX; | |
3937 | #endif | |
3938 | *p++ = 'L'; | |
3939 | *p++ = MICROMIPS_LABEL_CHAR; | |
3940 | do | |
3941 | { | |
3942 | symbol_name_temporary[i++] = l % 10 + '0'; | |
3943 | l /= 10; | |
3944 | } | |
3945 | while (l != 0); | |
3946 | while (i > 0) | |
3947 | *p++ = symbol_name_temporary[--i]; | |
3948 | *p = '\0'; | |
3949 | ||
3950 | return micromips_target_name; | |
3951 | } | |
3952 | ||
3953 | static void | |
3954 | micromips_label_expr (expressionS *label_expr) | |
3955 | { | |
3956 | label_expr->X_op = O_symbol; | |
3957 | label_expr->X_add_symbol = symbol_find_or_make (micromips_label_name ()); | |
3958 | label_expr->X_add_number = 0; | |
3959 | } | |
3960 | ||
3961 | static void | |
3962 | micromips_label_inc (void) | |
3963 | { | |
3964 | micromips_target_label++; | |
3965 | *micromips_target_name = '\0'; | |
3966 | } | |
3967 | ||
3968 | static void | |
3969 | micromips_add_label (void) | |
3970 | { | |
3971 | symbolS *s; | |
3972 | ||
3973 | s = colon (micromips_label_name ()); | |
3974 | micromips_label_inc (); | |
3975 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
3976 | if (IS_ELF) | |
3977 | S_SET_OTHER (s, ELF_ST_SET_MICROMIPS (S_GET_OTHER (s))); | |
db9b2be4 AM |
3978 | #else |
3979 | (void) s; | |
df58fc94 RS |
3980 | #endif |
3981 | } | |
3982 | ||
3983 | /* If assembling microMIPS code, then return the microMIPS reloc | |
3984 | corresponding to the requested one if any. Otherwise return | |
3985 | the reloc unchanged. */ | |
3986 | ||
3987 | static bfd_reloc_code_real_type | |
3988 | micromips_map_reloc (bfd_reloc_code_real_type reloc) | |
3989 | { | |
3990 | static const bfd_reloc_code_real_type relocs[][2] = | |
3991 | { | |
3992 | /* Keep sorted incrementally by the left-hand key. */ | |
3993 | { BFD_RELOC_16_PCREL_S2, BFD_RELOC_MICROMIPS_16_PCREL_S1 }, | |
3994 | { BFD_RELOC_GPREL16, BFD_RELOC_MICROMIPS_GPREL16 }, | |
3995 | { BFD_RELOC_MIPS_JMP, BFD_RELOC_MICROMIPS_JMP }, | |
3996 | { BFD_RELOC_HI16, BFD_RELOC_MICROMIPS_HI16 }, | |
3997 | { BFD_RELOC_HI16_S, BFD_RELOC_MICROMIPS_HI16_S }, | |
3998 | { BFD_RELOC_LO16, BFD_RELOC_MICROMIPS_LO16 }, | |
3999 | { BFD_RELOC_MIPS_LITERAL, BFD_RELOC_MICROMIPS_LITERAL }, | |
4000 | { BFD_RELOC_MIPS_GOT16, BFD_RELOC_MICROMIPS_GOT16 }, | |
4001 | { BFD_RELOC_MIPS_CALL16, BFD_RELOC_MICROMIPS_CALL16 }, | |
4002 | { BFD_RELOC_MIPS_GOT_HI16, BFD_RELOC_MICROMIPS_GOT_HI16 }, | |
4003 | { BFD_RELOC_MIPS_GOT_LO16, BFD_RELOC_MICROMIPS_GOT_LO16 }, | |
4004 | { BFD_RELOC_MIPS_CALL_HI16, BFD_RELOC_MICROMIPS_CALL_HI16 }, | |
4005 | { BFD_RELOC_MIPS_CALL_LO16, BFD_RELOC_MICROMIPS_CALL_LO16 }, | |
4006 | { BFD_RELOC_MIPS_SUB, BFD_RELOC_MICROMIPS_SUB }, | |
4007 | { BFD_RELOC_MIPS_GOT_PAGE, BFD_RELOC_MICROMIPS_GOT_PAGE }, | |
4008 | { BFD_RELOC_MIPS_GOT_OFST, BFD_RELOC_MICROMIPS_GOT_OFST }, | |
4009 | { BFD_RELOC_MIPS_GOT_DISP, BFD_RELOC_MICROMIPS_GOT_DISP }, | |
4010 | { BFD_RELOC_MIPS_HIGHEST, BFD_RELOC_MICROMIPS_HIGHEST }, | |
4011 | { BFD_RELOC_MIPS_HIGHER, BFD_RELOC_MICROMIPS_HIGHER }, | |
4012 | { BFD_RELOC_MIPS_SCN_DISP, BFD_RELOC_MICROMIPS_SCN_DISP }, | |
4013 | { BFD_RELOC_MIPS_TLS_GD, BFD_RELOC_MICROMIPS_TLS_GD }, | |
4014 | { BFD_RELOC_MIPS_TLS_LDM, BFD_RELOC_MICROMIPS_TLS_LDM }, | |
4015 | { BFD_RELOC_MIPS_TLS_DTPREL_HI16, BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16 }, | |
4016 | { BFD_RELOC_MIPS_TLS_DTPREL_LO16, BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16 }, | |
4017 | { BFD_RELOC_MIPS_TLS_GOTTPREL, BFD_RELOC_MICROMIPS_TLS_GOTTPREL }, | |
4018 | { BFD_RELOC_MIPS_TLS_TPREL_HI16, BFD_RELOC_MICROMIPS_TLS_TPREL_HI16 }, | |
4019 | { BFD_RELOC_MIPS_TLS_TPREL_LO16, BFD_RELOC_MICROMIPS_TLS_TPREL_LO16 } | |
4020 | }; | |
4021 | bfd_reloc_code_real_type r; | |
4022 | size_t i; | |
4023 | ||
4024 | if (!mips_opts.micromips) | |
4025 | return reloc; | |
4026 | for (i = 0; i < ARRAY_SIZE (relocs); i++) | |
4027 | { | |
4028 | r = relocs[i][0]; | |
4029 | if (r > reloc) | |
4030 | return reloc; | |
4031 | if (r == reloc) | |
4032 | return relocs[i][1]; | |
4033 | } | |
4034 | return reloc; | |
4035 | } | |
4036 | ||
b886a2ab RS |
4037 | /* Try to resolve relocation RELOC against constant OPERAND at assembly time. |
4038 | Return true on success, storing the resolved value in RESULT. */ | |
4039 | ||
4040 | static bfd_boolean | |
4041 | calculate_reloc (bfd_reloc_code_real_type reloc, offsetT operand, | |
4042 | offsetT *result) | |
4043 | { | |
4044 | switch (reloc) | |
4045 | { | |
4046 | case BFD_RELOC_MIPS_HIGHEST: | |
4047 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
4048 | *result = ((operand + 0x800080008000ull) >> 48) & 0xffff; | |
4049 | return TRUE; | |
4050 | ||
4051 | case BFD_RELOC_MIPS_HIGHER: | |
4052 | case BFD_RELOC_MICROMIPS_HIGHER: | |
4053 | *result = ((operand + 0x80008000ull) >> 32) & 0xffff; | |
4054 | return TRUE; | |
4055 | ||
4056 | case BFD_RELOC_HI16_S: | |
4057 | case BFD_RELOC_MICROMIPS_HI16_S: | |
4058 | case BFD_RELOC_MIPS16_HI16_S: | |
4059 | *result = ((operand + 0x8000) >> 16) & 0xffff; | |
4060 | return TRUE; | |
4061 | ||
4062 | case BFD_RELOC_HI16: | |
4063 | case BFD_RELOC_MICROMIPS_HI16: | |
4064 | case BFD_RELOC_MIPS16_HI16: | |
4065 | *result = (operand >> 16) & 0xffff; | |
4066 | return TRUE; | |
4067 | ||
4068 | case BFD_RELOC_LO16: | |
4069 | case BFD_RELOC_MICROMIPS_LO16: | |
4070 | case BFD_RELOC_MIPS16_LO16: | |
4071 | *result = operand & 0xffff; | |
4072 | return TRUE; | |
4073 | ||
4074 | case BFD_RELOC_UNUSED: | |
4075 | *result = operand; | |
4076 | return TRUE; | |
4077 | ||
4078 | default: | |
4079 | return FALSE; | |
4080 | } | |
4081 | } | |
4082 | ||
71400594 RS |
4083 | /* Output an instruction. IP is the instruction information. |
4084 | ADDRESS_EXPR is an operand of the instruction to be used with | |
df58fc94 RS |
4085 | RELOC_TYPE. EXPANSIONP is true if the instruction is part of |
4086 | a macro expansion. */ | |
71400594 RS |
4087 | |
4088 | static void | |
4089 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
df58fc94 | 4090 | bfd_reloc_code_real_type *reloc_type, bfd_boolean expansionp) |
71400594 | 4091 | { |
14fe068b | 4092 | unsigned long prev_pinfo2, pinfo; |
71400594 | 4093 | bfd_boolean relaxed_branch = FALSE; |
a4e06468 | 4094 | enum append_method method; |
2309ddf2 | 4095 | bfd_boolean relax32; |
2b0c8b40 | 4096 | int branch_disp; |
71400594 | 4097 | |
2309ddf2 | 4098 | if (mips_fix_loongson2f && !HAVE_CODE_COMPRESSION) |
c67a084a NC |
4099 | fix_loongson2f (ip); |
4100 | ||
738f4d98 | 4101 | file_ase_mips16 |= mips_opts.mips16; |
df58fc94 | 4102 | file_ase_micromips |= mips_opts.micromips; |
738f4d98 | 4103 | |
df58fc94 | 4104 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
71400594 | 4105 | pinfo = ip->insn_mo->pinfo; |
df58fc94 RS |
4106 | |
4107 | if (mips_opts.micromips | |
4108 | && !expansionp | |
4109 | && (((prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
4110 | && micromips_insn_length (ip->insn_mo) != 2) | |
4111 | || ((prev_pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 | |
4112 | && micromips_insn_length (ip->insn_mo) != 4))) | |
4113 | as_warn (_("Wrong size instruction in a %u-bit branch delay slot"), | |
4114 | (prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 ? 16 : 32); | |
71400594 | 4115 | |
15be625d CM |
4116 | if (address_expr == NULL) |
4117 | ip->complete_p = 1; | |
b886a2ab RS |
4118 | else if (reloc_type[0] <= BFD_RELOC_UNUSED |
4119 | && reloc_type[1] == BFD_RELOC_UNUSED | |
4120 | && reloc_type[2] == BFD_RELOC_UNUSED | |
15be625d CM |
4121 | && address_expr->X_op == O_constant) |
4122 | { | |
15be625d CM |
4123 | switch (*reloc_type) |
4124 | { | |
15be625d | 4125 | case BFD_RELOC_MIPS_JMP: |
df58fc94 RS |
4126 | { |
4127 | int shift; | |
4128 | ||
4129 | shift = mips_opts.micromips ? 1 : 2; | |
4130 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
4131 | as_bad (_("jump to misaligned address (0x%lx)"), | |
4132 | (unsigned long) address_expr->X_add_number); | |
4133 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
4134 | & 0x3ffffff); | |
335574df | 4135 | ip->complete_p = 1; |
df58fc94 | 4136 | } |
15be625d CM |
4137 | break; |
4138 | ||
4139 | case BFD_RELOC_MIPS16_JMP: | |
4140 | if ((address_expr->X_add_number & 3) != 0) | |
4141 | as_bad (_("jump to misaligned address (0x%lx)"), | |
4142 | (unsigned long) address_expr->X_add_number); | |
4143 | ip->insn_opcode |= | |
4144 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
4145 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
4146 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
335574df | 4147 | ip->complete_p = 1; |
15be625d CM |
4148 | break; |
4149 | ||
4150 | case BFD_RELOC_16_PCREL_S2: | |
df58fc94 RS |
4151 | { |
4152 | int shift; | |
4153 | ||
4154 | shift = mips_opts.micromips ? 1 : 2; | |
4155 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
4156 | as_bad (_("branch to misaligned address (0x%lx)"), | |
4157 | (unsigned long) address_expr->X_add_number); | |
4158 | if (!mips_relax_branch) | |
4159 | { | |
4160 | if ((address_expr->X_add_number + (1 << (shift + 15))) | |
4161 | & ~((1 << (shift + 16)) - 1)) | |
4162 | as_bad (_("branch address range overflow (0x%lx)"), | |
4163 | (unsigned long) address_expr->X_add_number); | |
4164 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
4165 | & 0xffff); | |
4166 | } | |
df58fc94 | 4167 | } |
15be625d CM |
4168 | break; |
4169 | ||
4170 | default: | |
b886a2ab RS |
4171 | { |
4172 | offsetT value; | |
4173 | ||
4174 | if (calculate_reloc (*reloc_type, address_expr->X_add_number, | |
4175 | &value)) | |
4176 | { | |
4177 | ip->insn_opcode |= value & 0xffff; | |
4178 | ip->complete_p = 1; | |
4179 | } | |
4180 | } | |
4181 | break; | |
4182 | } | |
15be625d CM |
4183 | } |
4184 | ||
71400594 RS |
4185 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
4186 | { | |
4187 | /* There are a lot of optimizations we could do that we don't. | |
4188 | In particular, we do not, in general, reorder instructions. | |
4189 | If you use gcc with optimization, it will reorder | |
4190 | instructions and generally do much more optimization then we | |
4191 | do here; repeating all that work in the assembler would only | |
4192 | benefit hand written assembly code, and does not seem worth | |
4193 | it. */ | |
4194 | int nops = (mips_optimize == 0 | |
932d1a1b RS |
4195 | ? nops_for_insn (0, history, NULL) |
4196 | : nops_for_insn_or_target (0, history, ip)); | |
71400594 | 4197 | if (nops > 0) |
252b5132 RH |
4198 | { |
4199 | fragS *old_frag; | |
4200 | unsigned long old_frag_offset; | |
4201 | int i; | |
252b5132 RH |
4202 | |
4203 | old_frag = frag_now; | |
4204 | old_frag_offset = frag_now_fix (); | |
4205 | ||
4206 | for (i = 0; i < nops; i++) | |
14fe068b RS |
4207 | add_fixed_insn (NOP_INSN); |
4208 | insert_into_history (0, nops, NOP_INSN); | |
252b5132 RH |
4209 | |
4210 | if (listing) | |
4211 | { | |
4212 | listing_prev_line (); | |
4213 | /* We may be at the start of a variant frag. In case we | |
4214 | are, make sure there is enough space for the frag | |
4215 | after the frags created by listing_prev_line. The | |
4216 | argument to frag_grow here must be at least as large | |
4217 | as the argument to all other calls to frag_grow in | |
4218 | this file. We don't have to worry about being in the | |
4219 | middle of a variant frag, because the variants insert | |
4220 | all needed nop instructions themselves. */ | |
4221 | frag_grow (40); | |
4222 | } | |
4223 | ||
462427c4 | 4224 | mips_move_text_labels (); |
252b5132 RH |
4225 | |
4226 | #ifndef NO_ECOFF_DEBUGGING | |
4227 | if (ECOFF_DEBUGGING) | |
4228 | ecoff_fix_loc (old_frag, old_frag_offset); | |
4229 | #endif | |
4230 | } | |
71400594 RS |
4231 | } |
4232 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
4233 | { | |
932d1a1b RS |
4234 | int nops; |
4235 | ||
4236 | /* Work out how many nops in prev_nop_frag are needed by IP, | |
4237 | ignoring hazards generated by the first prev_nop_frag_since | |
4238 | instructions. */ | |
4239 | nops = nops_for_insn_or_target (prev_nop_frag_since, history, ip); | |
9c2799c2 | 4240 | gas_assert (nops <= prev_nop_frag_holds); |
252b5132 | 4241 | |
71400594 RS |
4242 | /* Enforce NOPS as a minimum. */ |
4243 | if (nops > prev_nop_frag_required) | |
4244 | prev_nop_frag_required = nops; | |
252b5132 | 4245 | |
71400594 RS |
4246 | if (prev_nop_frag_holds == prev_nop_frag_required) |
4247 | { | |
4248 | /* Settle for the current number of nops. Update the history | |
4249 | accordingly (for the benefit of any future .set reorder code). */ | |
4250 | prev_nop_frag = NULL; | |
4251 | insert_into_history (prev_nop_frag_since, | |
4252 | prev_nop_frag_holds, NOP_INSN); | |
4253 | } | |
4254 | else | |
4255 | { | |
4256 | /* Allow this instruction to replace one of the nops that was | |
4257 | tentatively added to prev_nop_frag. */ | |
df58fc94 | 4258 | prev_nop_frag->fr_fix -= NOP_INSN_SIZE; |
71400594 RS |
4259 | prev_nop_frag_holds--; |
4260 | prev_nop_frag_since++; | |
252b5132 RH |
4261 | } |
4262 | } | |
4263 | ||
a4e06468 | 4264 | method = get_append_method (ip); |
2b0c8b40 | 4265 | branch_disp = method == APPEND_SWAP ? insn_length (history) : 0; |
a4e06468 | 4266 | |
58e2ea4d MR |
4267 | #ifdef OBJ_ELF |
4268 | /* The value passed to dwarf2_emit_insn is the distance between | |
4269 | the beginning of the current instruction and the address that | |
e3a82c8e MR |
4270 | should be recorded in the debug tables. This is normally the |
4271 | current address. | |
4272 | ||
df58fc94 RS |
4273 | For MIPS16/microMIPS debug info we want to use ISA-encoded |
4274 | addresses, so we use -1 for an address higher by one than the | |
4275 | current one. | |
e3a82c8e MR |
4276 | |
4277 | If the instruction produced is a branch that we will swap with | |
4278 | the preceding instruction, then we add the displacement by which | |
4279 | the branch will be moved backwards. This is more appropriate | |
2309ddf2 MR |
4280 | and for MIPS16/microMIPS code also prevents a debugger from |
4281 | placing a breakpoint in the middle of the branch (and corrupting | |
4282 | code if software breakpoints are used). */ | |
2b0c8b40 | 4283 | dwarf2_emit_insn ((HAVE_CODE_COMPRESSION ? -1 : 0) + branch_disp); |
58e2ea4d MR |
4284 | #endif |
4285 | ||
df58fc94 RS |
4286 | relax32 = (mips_relax_branch |
4287 | /* Don't try branch relaxation within .set nomacro, or within | |
4288 | .set noat if we use $at for PIC computations. If it turns | |
4289 | out that the branch was out-of-range, we'll get an error. */ | |
4290 | && !mips_opts.warn_about_macros | |
4291 | && (mips_opts.at || mips_pic == NO_PIC) | |
4292 | /* Don't relax BPOSGE32/64 as they have no complementing | |
4293 | branches. */ | |
40209cad | 4294 | && !(ip->insn_mo->membership & (INSN_DSP64 | INSN_DSP))); |
df58fc94 RS |
4295 | |
4296 | if (!HAVE_CODE_COMPRESSION | |
4297 | && address_expr | |
4298 | && relax32 | |
0b25d3e6 | 4299 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
11625dd8 | 4300 | && delayed_branch_p (ip)) |
4a6a3df4 | 4301 | { |
895921c9 | 4302 | relaxed_branch = TRUE; |
1e915849 RS |
4303 | add_relaxed_insn (ip, (relaxed_branch_length |
4304 | (NULL, NULL, | |
11625dd8 RS |
4305 | uncond_branch_p (ip) ? -1 |
4306 | : branch_likely_p (ip) ? 1 | |
1e915849 RS |
4307 | : 0)), 4, |
4308 | RELAX_BRANCH_ENCODE | |
66b3e8da | 4309 | (AT, |
11625dd8 RS |
4310 | uncond_branch_p (ip), |
4311 | branch_likely_p (ip), | |
1e915849 RS |
4312 | pinfo & INSN_WRITE_GPR_31, |
4313 | 0), | |
4314 | address_expr->X_add_symbol, | |
4315 | address_expr->X_add_number); | |
4a6a3df4 AO |
4316 | *reloc_type = BFD_RELOC_UNUSED; |
4317 | } | |
df58fc94 RS |
4318 | else if (mips_opts.micromips |
4319 | && address_expr | |
4320 | && ((relax32 && *reloc_type == BFD_RELOC_16_PCREL_S2) | |
4321 | || *reloc_type > BFD_RELOC_UNUSED) | |
40209cad MR |
4322 | && (delayed_branch_p (ip) || compact_branch_p (ip)) |
4323 | /* Don't try branch relaxation when users specify | |
4324 | 16-bit/32-bit instructions. */ | |
4325 | && !forced_insn_length) | |
df58fc94 RS |
4326 | { |
4327 | bfd_boolean relax16 = *reloc_type > BFD_RELOC_UNUSED; | |
4328 | int type = relax16 ? *reloc_type - BFD_RELOC_UNUSED : 0; | |
11625dd8 RS |
4329 | int uncond = uncond_branch_p (ip) ? -1 : 0; |
4330 | int compact = compact_branch_p (ip); | |
df58fc94 RS |
4331 | int al = pinfo & INSN_WRITE_GPR_31; |
4332 | int length32; | |
4333 | ||
4334 | gas_assert (address_expr != NULL); | |
4335 | gas_assert (!mips_relax.sequence); | |
4336 | ||
2b0c8b40 | 4337 | relaxed_branch = TRUE; |
df58fc94 RS |
4338 | length32 = relaxed_micromips_32bit_branch_length (NULL, NULL, uncond); |
4339 | add_relaxed_insn (ip, relax32 ? length32 : 4, relax16 ? 2 : 4, | |
40209cad MR |
4340 | RELAX_MICROMIPS_ENCODE (type, AT, uncond, compact, al, |
4341 | relax32, 0, 0), | |
df58fc94 RS |
4342 | address_expr->X_add_symbol, |
4343 | address_expr->X_add_number); | |
4344 | *reloc_type = BFD_RELOC_UNUSED; | |
4345 | } | |
4346 | else if (mips_opts.mips16 && *reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
4347 | { |
4348 | /* We need to set up a variant frag. */ | |
df58fc94 | 4349 | gas_assert (address_expr != NULL); |
1e915849 RS |
4350 | add_relaxed_insn (ip, 4, 0, |
4351 | RELAX_MIPS16_ENCODE | |
4352 | (*reloc_type - BFD_RELOC_UNUSED, | |
df58fc94 | 4353 | forced_insn_length == 2, forced_insn_length == 4, |
11625dd8 | 4354 | delayed_branch_p (&history[0]), |
1e915849 RS |
4355 | history[0].mips16_absolute_jump_p), |
4356 | make_expr_symbol (address_expr), 0); | |
252b5132 | 4357 | } |
5c04167a | 4358 | else if (mips_opts.mips16 && insn_length (ip) == 2) |
9497f5ac | 4359 | { |
11625dd8 | 4360 | if (!delayed_branch_p (ip)) |
b8ee1a6e DU |
4361 | /* Make sure there is enough room to swap this instruction with |
4362 | a following jump instruction. */ | |
4363 | frag_grow (6); | |
1e915849 | 4364 | add_fixed_insn (ip); |
252b5132 RH |
4365 | } |
4366 | else | |
4367 | { | |
4368 | if (mips_opts.mips16 | |
4369 | && mips_opts.noreorder | |
11625dd8 | 4370 | && delayed_branch_p (&history[0])) |
252b5132 RH |
4371 | as_warn (_("extended instruction in delay slot")); |
4372 | ||
4d7206a2 RS |
4373 | if (mips_relax.sequence) |
4374 | { | |
4375 | /* If we've reached the end of this frag, turn it into a variant | |
4376 | frag and record the information for the instructions we've | |
4377 | written so far. */ | |
4378 | if (frag_room () < 4) | |
4379 | relax_close_frag (); | |
df58fc94 | 4380 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (ip); |
4d7206a2 RS |
4381 | } |
4382 | ||
584892a6 | 4383 | if (mips_relax.sequence != 2) |
df58fc94 RS |
4384 | { |
4385 | if (mips_macro_warning.first_insn_sizes[0] == 0) | |
4386 | mips_macro_warning.first_insn_sizes[0] = insn_length (ip); | |
4387 | mips_macro_warning.sizes[0] += insn_length (ip); | |
4388 | mips_macro_warning.insns[0]++; | |
4389 | } | |
584892a6 | 4390 | if (mips_relax.sequence != 1) |
df58fc94 RS |
4391 | { |
4392 | if (mips_macro_warning.first_insn_sizes[1] == 0) | |
4393 | mips_macro_warning.first_insn_sizes[1] = insn_length (ip); | |
4394 | mips_macro_warning.sizes[1] += insn_length (ip); | |
4395 | mips_macro_warning.insns[1]++; | |
4396 | } | |
584892a6 | 4397 | |
1e915849 RS |
4398 | if (mips_opts.mips16) |
4399 | { | |
4400 | ip->fixed_p = 1; | |
4401 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
4402 | } | |
4403 | add_fixed_insn (ip); | |
252b5132 RH |
4404 | } |
4405 | ||
9fe77896 | 4406 | if (!ip->complete_p && *reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 4407 | { |
df58fc94 | 4408 | bfd_reloc_code_real_type final_type[3]; |
2309ddf2 | 4409 | reloc_howto_type *howto0; |
9fe77896 RS |
4410 | reloc_howto_type *howto; |
4411 | int i; | |
34ce925e | 4412 | |
df58fc94 RS |
4413 | /* Perform any necessary conversion to microMIPS relocations |
4414 | and find out how many relocations there actually are. */ | |
4415 | for (i = 0; i < 3 && reloc_type[i] != BFD_RELOC_UNUSED; i++) | |
4416 | final_type[i] = micromips_map_reloc (reloc_type[i]); | |
4417 | ||
9fe77896 RS |
4418 | /* In a compound relocation, it is the final (outermost) |
4419 | operator that determines the relocated field. */ | |
2309ddf2 MR |
4420 | howto = howto0 = bfd_reloc_type_lookup (stdoutput, final_type[i - 1]); |
4421 | ||
9fe77896 RS |
4422 | if (howto == NULL) |
4423 | { | |
4424 | /* To reproduce this failure try assembling gas/testsuites/ | |
4425 | gas/mips/mips16-intermix.s with a mips-ecoff targeted | |
4426 | assembler. */ | |
df58fc94 RS |
4427 | as_bad (_("Unsupported MIPS relocation number %d"), |
4428 | final_type[i - 1]); | |
9fe77896 RS |
4429 | howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_16); |
4430 | } | |
2309ddf2 MR |
4431 | |
4432 | if (i > 1) | |
4433 | howto0 = bfd_reloc_type_lookup (stdoutput, final_type[0]); | |
9fe77896 RS |
4434 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
4435 | bfd_get_reloc_size (howto), | |
4436 | address_expr, | |
2309ddf2 MR |
4437 | howto0 && howto0->pc_relative, |
4438 | final_type[0]); | |
9fe77896 RS |
4439 | |
4440 | /* Tag symbols that have a R_MIPS16_26 relocation against them. */ | |
2309ddf2 | 4441 | if (final_type[0] == BFD_RELOC_MIPS16_JMP && ip->fixp[0]->fx_addsy) |
9fe77896 RS |
4442 | *symbol_get_tc (ip->fixp[0]->fx_addsy) = 1; |
4443 | ||
4444 | /* These relocations can have an addend that won't fit in | |
4445 | 4 octets for 64bit assembly. */ | |
4446 | if (HAVE_64BIT_GPRS | |
4447 | && ! howto->partial_inplace | |
4448 | && (reloc_type[0] == BFD_RELOC_16 | |
4449 | || reloc_type[0] == BFD_RELOC_32 | |
4450 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
4451 | || reloc_type[0] == BFD_RELOC_GPREL16 | |
4452 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
4453 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
4454 | || reloc_type[0] == BFD_RELOC_64 | |
4455 | || reloc_type[0] == BFD_RELOC_CTOR | |
4456 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
4457 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
4458 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
4459 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
4460 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
4461 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT | |
4462 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
4463 | || hi16_reloc_p (reloc_type[0]) | |
4464 | || lo16_reloc_p (reloc_type[0]))) | |
4465 | ip->fixp[0]->fx_no_overflow = 1; | |
4466 | ||
ddaf2c41 MR |
4467 | /* These relocations can have an addend that won't fit in 2 octets. */ |
4468 | if (reloc_type[0] == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
4469 | || reloc_type[0] == BFD_RELOC_MICROMIPS_10_PCREL_S1) | |
4470 | ip->fixp[0]->fx_no_overflow = 1; | |
4471 | ||
9fe77896 RS |
4472 | if (mips_relax.sequence) |
4473 | { | |
4474 | if (mips_relax.first_fixup == 0) | |
4475 | mips_relax.first_fixup = ip->fixp[0]; | |
4476 | } | |
4477 | else if (reloc_needs_lo_p (*reloc_type)) | |
4478 | { | |
4479 | struct mips_hi_fixup *hi_fixup; | |
4480 | ||
4481 | /* Reuse the last entry if it already has a matching %lo. */ | |
4482 | hi_fixup = mips_hi_fixup_list; | |
4483 | if (hi_fixup == 0 | |
4484 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
4d7206a2 | 4485 | { |
9fe77896 RS |
4486 | hi_fixup = ((struct mips_hi_fixup *) |
4487 | xmalloc (sizeof (struct mips_hi_fixup))); | |
4488 | hi_fixup->next = mips_hi_fixup_list; | |
4489 | mips_hi_fixup_list = hi_fixup; | |
4d7206a2 | 4490 | } |
9fe77896 RS |
4491 | hi_fixup->fixp = ip->fixp[0]; |
4492 | hi_fixup->seg = now_seg; | |
4493 | } | |
252b5132 | 4494 | |
9fe77896 RS |
4495 | /* Add fixups for the second and third relocations, if given. |
4496 | Note that the ABI allows the second relocation to be | |
4497 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
4498 | moment we only use RSS_UNDEF, but we could add support | |
4499 | for the others if it ever becomes necessary. */ | |
4500 | for (i = 1; i < 3; i++) | |
4501 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
4502 | { | |
4503 | ip->fixp[i] = fix_new (ip->frag, ip->where, | |
4504 | ip->fixp[0]->fx_size, NULL, 0, | |
df58fc94 | 4505 | FALSE, final_type[i]); |
f6688943 | 4506 | |
9fe77896 RS |
4507 | /* Use fx_tcbit to mark compound relocs. */ |
4508 | ip->fixp[0]->fx_tcbit = 1; | |
4509 | ip->fixp[i]->fx_tcbit = 1; | |
4510 | } | |
252b5132 | 4511 | } |
1e915849 | 4512 | install_insn (ip); |
252b5132 RH |
4513 | |
4514 | /* Update the register mask information. */ | |
4c260379 RS |
4515 | mips_gprmask |= gpr_read_mask (ip) | gpr_write_mask (ip); |
4516 | mips_cprmask[1] |= fpr_read_mask (ip) | fpr_write_mask (ip); | |
252b5132 | 4517 | |
a4e06468 | 4518 | switch (method) |
252b5132 | 4519 | { |
a4e06468 RS |
4520 | case APPEND_ADD: |
4521 | insert_into_history (0, 1, ip); | |
4522 | break; | |
4523 | ||
4524 | case APPEND_ADD_WITH_NOP: | |
14fe068b RS |
4525 | { |
4526 | struct mips_cl_insn *nop; | |
4527 | ||
4528 | insert_into_history (0, 1, ip); | |
4529 | nop = get_delay_slot_nop (ip); | |
4530 | add_fixed_insn (nop); | |
4531 | insert_into_history (0, 1, nop); | |
4532 | if (mips_relax.sequence) | |
4533 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (nop); | |
4534 | } | |
a4e06468 RS |
4535 | break; |
4536 | ||
4537 | case APPEND_ADD_COMPACT: | |
4538 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
4539 | gas_assert (mips_opts.mips16); | |
4540 | ip->insn_opcode |= 0x0080; | |
4541 | find_altered_mips16_opcode (ip); | |
4542 | install_insn (ip); | |
4543 | insert_into_history (0, 1, ip); | |
4544 | break; | |
4545 | ||
4546 | case APPEND_SWAP: | |
4547 | { | |
4548 | struct mips_cl_insn delay = history[0]; | |
4549 | if (mips_opts.mips16) | |
4550 | { | |
4551 | know (delay.frag == ip->frag); | |
4552 | move_insn (ip, delay.frag, delay.where); | |
4553 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
4554 | } | |
464ab0e5 | 4555 | else if (relaxed_branch || delay.frag != ip->frag) |
a4e06468 RS |
4556 | { |
4557 | /* Add the delay slot instruction to the end of the | |
4558 | current frag and shrink the fixed part of the | |
4559 | original frag. If the branch occupies the tail of | |
4560 | the latter, move it backwards to cover the gap. */ | |
2b0c8b40 | 4561 | delay.frag->fr_fix -= branch_disp; |
a4e06468 | 4562 | if (delay.frag == ip->frag) |
2b0c8b40 | 4563 | move_insn (ip, ip->frag, ip->where - branch_disp); |
a4e06468 RS |
4564 | add_fixed_insn (&delay); |
4565 | } | |
4566 | else | |
4567 | { | |
2b0c8b40 MR |
4568 | move_insn (&delay, ip->frag, |
4569 | ip->where - branch_disp + insn_length (ip)); | |
a4e06468 RS |
4570 | move_insn (ip, history[0].frag, history[0].where); |
4571 | } | |
4572 | history[0] = *ip; | |
4573 | delay.fixed_p = 1; | |
4574 | insert_into_history (0, 1, &delay); | |
4575 | } | |
4576 | break; | |
252b5132 RH |
4577 | } |
4578 | ||
13408f1e | 4579 | /* If we have just completed an unconditional branch, clear the history. */ |
11625dd8 RS |
4580 | if ((delayed_branch_p (&history[1]) && uncond_branch_p (&history[1])) |
4581 | || (compact_branch_p (&history[0]) && uncond_branch_p (&history[0]))) | |
13408f1e RS |
4582 | mips_no_prev_insn (); |
4583 | ||
df58fc94 RS |
4584 | /* We need to emit a label at the end of branch-likely macros. */ |
4585 | if (emit_branch_likely_macro) | |
4586 | { | |
4587 | emit_branch_likely_macro = FALSE; | |
4588 | micromips_add_label (); | |
4589 | } | |
4590 | ||
252b5132 RH |
4591 | /* We just output an insn, so the next one doesn't have a label. */ |
4592 | mips_clear_insn_labels (); | |
252b5132 RH |
4593 | } |
4594 | ||
7d10b47d | 4595 | /* Forget that there was any previous instruction or label. */ |
252b5132 RH |
4596 | |
4597 | static void | |
7d10b47d | 4598 | mips_no_prev_insn (void) |
252b5132 | 4599 | { |
7d10b47d RS |
4600 | prev_nop_frag = NULL; |
4601 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
4602 | mips_clear_insn_labels (); |
4603 | } | |
4604 | ||
7d10b47d RS |
4605 | /* This function must be called before we emit something other than |
4606 | instructions. It is like mips_no_prev_insn except that it inserts | |
4607 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 4608 | |
7d10b47d RS |
4609 | void |
4610 | mips_emit_delays (void) | |
252b5132 RH |
4611 | { |
4612 | if (! mips_opts.noreorder) | |
4613 | { | |
932d1a1b | 4614 | int nops = nops_for_insn (0, history, NULL); |
252b5132 RH |
4615 | if (nops > 0) |
4616 | { | |
7d10b47d RS |
4617 | while (nops-- > 0) |
4618 | add_fixed_insn (NOP_INSN); | |
462427c4 | 4619 | mips_move_text_labels (); |
7d10b47d RS |
4620 | } |
4621 | } | |
4622 | mips_no_prev_insn (); | |
4623 | } | |
4624 | ||
4625 | /* Start a (possibly nested) noreorder block. */ | |
4626 | ||
4627 | static void | |
4628 | start_noreorder (void) | |
4629 | { | |
4630 | if (mips_opts.noreorder == 0) | |
4631 | { | |
4632 | unsigned int i; | |
4633 | int nops; | |
4634 | ||
4635 | /* None of the instructions before the .set noreorder can be moved. */ | |
4636 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
4637 | history[i].fixed_p = 1; | |
4638 | ||
4639 | /* Insert any nops that might be needed between the .set noreorder | |
4640 | block and the previous instructions. We will later remove any | |
4641 | nops that turn out not to be needed. */ | |
932d1a1b | 4642 | nops = nops_for_insn (0, history, NULL); |
7d10b47d RS |
4643 | if (nops > 0) |
4644 | { | |
4645 | if (mips_optimize != 0) | |
252b5132 RH |
4646 | { |
4647 | /* Record the frag which holds the nop instructions, so | |
4648 | that we can remove them if we don't need them. */ | |
df58fc94 | 4649 | frag_grow (nops * NOP_INSN_SIZE); |
252b5132 RH |
4650 | prev_nop_frag = frag_now; |
4651 | prev_nop_frag_holds = nops; | |
4652 | prev_nop_frag_required = 0; | |
4653 | prev_nop_frag_since = 0; | |
4654 | } | |
4655 | ||
4656 | for (; nops > 0; --nops) | |
1e915849 | 4657 | add_fixed_insn (NOP_INSN); |
252b5132 | 4658 | |
7d10b47d RS |
4659 | /* Move on to a new frag, so that it is safe to simply |
4660 | decrease the size of prev_nop_frag. */ | |
4661 | frag_wane (frag_now); | |
4662 | frag_new (0); | |
462427c4 | 4663 | mips_move_text_labels (); |
252b5132 | 4664 | } |
df58fc94 | 4665 | mips_mark_labels (); |
7d10b47d | 4666 | mips_clear_insn_labels (); |
252b5132 | 4667 | } |
7d10b47d RS |
4668 | mips_opts.noreorder++; |
4669 | mips_any_noreorder = 1; | |
4670 | } | |
252b5132 | 4671 | |
7d10b47d | 4672 | /* End a nested noreorder block. */ |
252b5132 | 4673 | |
7d10b47d RS |
4674 | static void |
4675 | end_noreorder (void) | |
4676 | { | |
4677 | mips_opts.noreorder--; | |
4678 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
4679 | { | |
4680 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
4681 | handling nop insertion the .set reorder way. */ | |
4682 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
df58fc94 | 4683 | * NOP_INSN_SIZE); |
7d10b47d RS |
4684 | insert_into_history (prev_nop_frag_since, |
4685 | prev_nop_frag_required, NOP_INSN); | |
4686 | prev_nop_frag = NULL; | |
4687 | } | |
252b5132 RH |
4688 | } |
4689 | ||
584892a6 RS |
4690 | /* Set up global variables for the start of a new macro. */ |
4691 | ||
4692 | static void | |
4693 | macro_start (void) | |
4694 | { | |
4695 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
df58fc94 RS |
4696 | memset (&mips_macro_warning.first_insn_sizes, 0, |
4697 | sizeof (mips_macro_warning.first_insn_sizes)); | |
4698 | memset (&mips_macro_warning.insns, 0, sizeof (mips_macro_warning.insns)); | |
584892a6 | 4699 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder |
11625dd8 | 4700 | && delayed_branch_p (&history[0])); |
df58fc94 RS |
4701 | switch (history[0].insn_mo->pinfo2 |
4702 | & (INSN2_BRANCH_DELAY_32BIT | INSN2_BRANCH_DELAY_16BIT)) | |
4703 | { | |
4704 | case INSN2_BRANCH_DELAY_32BIT: | |
4705 | mips_macro_warning.delay_slot_length = 4; | |
4706 | break; | |
4707 | case INSN2_BRANCH_DELAY_16BIT: | |
4708 | mips_macro_warning.delay_slot_length = 2; | |
4709 | break; | |
4710 | default: | |
4711 | mips_macro_warning.delay_slot_length = 0; | |
4712 | break; | |
4713 | } | |
4714 | mips_macro_warning.first_frag = NULL; | |
584892a6 RS |
4715 | } |
4716 | ||
df58fc94 RS |
4717 | /* Given that a macro is longer than one instruction or of the wrong size, |
4718 | return the appropriate warning for it. Return null if no warning is | |
4719 | needed. SUBTYPE is a bitmask of RELAX_DELAY_SLOT, RELAX_DELAY_SLOT_16BIT, | |
4720 | RELAX_DELAY_SLOT_SIZE_FIRST, RELAX_DELAY_SLOT_SIZE_SECOND, | |
4721 | and RELAX_NOMACRO. */ | |
584892a6 RS |
4722 | |
4723 | static const char * | |
4724 | macro_warning (relax_substateT subtype) | |
4725 | { | |
4726 | if (subtype & RELAX_DELAY_SLOT) | |
4727 | return _("Macro instruction expanded into multiple instructions" | |
4728 | " in a branch delay slot"); | |
4729 | else if (subtype & RELAX_NOMACRO) | |
4730 | return _("Macro instruction expanded into multiple instructions"); | |
df58fc94 RS |
4731 | else if (subtype & (RELAX_DELAY_SLOT_SIZE_FIRST |
4732 | | RELAX_DELAY_SLOT_SIZE_SECOND)) | |
4733 | return ((subtype & RELAX_DELAY_SLOT_16BIT) | |
4734 | ? _("Macro instruction expanded into a wrong size instruction" | |
4735 | " in a 16-bit branch delay slot") | |
4736 | : _("Macro instruction expanded into a wrong size instruction" | |
4737 | " in a 32-bit branch delay slot")); | |
584892a6 RS |
4738 | else |
4739 | return 0; | |
4740 | } | |
4741 | ||
4742 | /* Finish up a macro. Emit warnings as appropriate. */ | |
4743 | ||
4744 | static void | |
4745 | macro_end (void) | |
4746 | { | |
df58fc94 RS |
4747 | /* Relaxation warning flags. */ |
4748 | relax_substateT subtype = 0; | |
4749 | ||
4750 | /* Check delay slot size requirements. */ | |
4751 | if (mips_macro_warning.delay_slot_length == 2) | |
4752 | subtype |= RELAX_DELAY_SLOT_16BIT; | |
4753 | if (mips_macro_warning.delay_slot_length != 0) | |
584892a6 | 4754 | { |
df58fc94 RS |
4755 | if (mips_macro_warning.delay_slot_length |
4756 | != mips_macro_warning.first_insn_sizes[0]) | |
4757 | subtype |= RELAX_DELAY_SLOT_SIZE_FIRST; | |
4758 | if (mips_macro_warning.delay_slot_length | |
4759 | != mips_macro_warning.first_insn_sizes[1]) | |
4760 | subtype |= RELAX_DELAY_SLOT_SIZE_SECOND; | |
4761 | } | |
584892a6 | 4762 | |
df58fc94 RS |
4763 | /* Check instruction count requirements. */ |
4764 | if (mips_macro_warning.insns[0] > 1 || mips_macro_warning.insns[1] > 1) | |
4765 | { | |
4766 | if (mips_macro_warning.insns[1] > mips_macro_warning.insns[0]) | |
584892a6 RS |
4767 | subtype |= RELAX_SECOND_LONGER; |
4768 | if (mips_opts.warn_about_macros) | |
4769 | subtype |= RELAX_NOMACRO; | |
4770 | if (mips_macro_warning.delay_slot_p) | |
4771 | subtype |= RELAX_DELAY_SLOT; | |
df58fc94 | 4772 | } |
584892a6 | 4773 | |
df58fc94 RS |
4774 | /* If both alternatives fail to fill a delay slot correctly, |
4775 | emit the warning now. */ | |
4776 | if ((subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0 | |
4777 | && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0) | |
4778 | { | |
4779 | relax_substateT s; | |
4780 | const char *msg; | |
4781 | ||
4782 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
4783 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
4784 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
4785 | msg = macro_warning (s); | |
4786 | if (msg != NULL) | |
4787 | as_warn ("%s", msg); | |
4788 | subtype &= ~s; | |
4789 | } | |
4790 | ||
4791 | /* If both implementations are longer than 1 instruction, then emit the | |
4792 | warning now. */ | |
4793 | if (mips_macro_warning.insns[0] > 1 && mips_macro_warning.insns[1] > 1) | |
4794 | { | |
4795 | relax_substateT s; | |
4796 | const char *msg; | |
4797 | ||
4798 | s = subtype & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT); | |
4799 | msg = macro_warning (s); | |
4800 | if (msg != NULL) | |
4801 | as_warn ("%s", msg); | |
4802 | subtype &= ~s; | |
584892a6 | 4803 | } |
df58fc94 RS |
4804 | |
4805 | /* If any flags still set, then one implementation might need a warning | |
4806 | and the other either will need one of a different kind or none at all. | |
4807 | Pass any remaining flags over to relaxation. */ | |
4808 | if (mips_macro_warning.first_frag != NULL) | |
4809 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
584892a6 RS |
4810 | } |
4811 | ||
df58fc94 RS |
4812 | /* Instruction operand formats used in macros that vary between |
4813 | standard MIPS and microMIPS code. */ | |
4814 | ||
4815 | static const char * const brk_fmt[2] = { "c", "mF" }; | |
4816 | static const char * const cop12_fmt[2] = { "E,o(b)", "E,~(b)" }; | |
4817 | static const char * const jalr_fmt[2] = { "d,s", "t,s" }; | |
4818 | static const char * const lui_fmt[2] = { "t,u", "s,u" }; | |
4819 | static const char * const mem12_fmt[2] = { "t,o(b)", "t,~(b)" }; | |
4820 | static const char * const mfhl_fmt[2] = { "d", "mj" }; | |
4821 | static const char * const shft_fmt[2] = { "d,w,<", "t,r,<" }; | |
4822 | static const char * const trap_fmt[2] = { "s,t,q", "s,t,|" }; | |
4823 | ||
4824 | #define BRK_FMT (brk_fmt[mips_opts.micromips]) | |
4825 | #define COP12_FMT (cop12_fmt[mips_opts.micromips]) | |
4826 | #define JALR_FMT (jalr_fmt[mips_opts.micromips]) | |
4827 | #define LUI_FMT (lui_fmt[mips_opts.micromips]) | |
4828 | #define MEM12_FMT (mem12_fmt[mips_opts.micromips]) | |
4829 | #define MFHL_FMT (mfhl_fmt[mips_opts.micromips]) | |
4830 | #define SHFT_FMT (shft_fmt[mips_opts.micromips]) | |
4831 | #define TRAP_FMT (trap_fmt[mips_opts.micromips]) | |
4832 | ||
6e1304d8 RS |
4833 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
4834 | The first argument in *ARGS will be either the code for a single | |
4835 | relocation or -1 followed by the three codes that make up a | |
4836 | composite relocation. */ | |
4837 | ||
4838 | static void | |
4839 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
4840 | { | |
4841 | int i, next; | |
4842 | ||
4843 | next = va_arg (*args, int); | |
4844 | if (next >= 0) | |
4845 | r[0] = (bfd_reloc_code_real_type) next; | |
4846 | else | |
4847 | for (i = 0; i < 3; i++) | |
4848 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
4849 | } | |
4850 | ||
252b5132 RH |
4851 | /* Build an instruction created by a macro expansion. This is passed |
4852 | a pointer to the count of instructions created so far, an | |
4853 | expression, the name of the instruction to build, an operand format | |
4854 | string, and corresponding arguments. */ | |
4855 | ||
252b5132 | 4856 | static void |
67c0d1eb | 4857 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 4858 | { |
df58fc94 | 4859 | const struct mips_opcode *mo = NULL; |
f6688943 | 4860 | bfd_reloc_code_real_type r[3]; |
df58fc94 RS |
4861 | const struct mips_opcode *amo; |
4862 | struct hash_control *hash; | |
4863 | struct mips_cl_insn insn; | |
252b5132 | 4864 | va_list args; |
252b5132 | 4865 | |
252b5132 | 4866 | va_start (args, fmt); |
252b5132 | 4867 | |
252b5132 RH |
4868 | if (mips_opts.mips16) |
4869 | { | |
03ea81db | 4870 | mips16_macro_build (ep, name, fmt, &args); |
252b5132 RH |
4871 | va_end (args); |
4872 | return; | |
4873 | } | |
4874 | ||
f6688943 TS |
4875 | r[0] = BFD_RELOC_UNUSED; |
4876 | r[1] = BFD_RELOC_UNUSED; | |
4877 | r[2] = BFD_RELOC_UNUSED; | |
df58fc94 RS |
4878 | hash = mips_opts.micromips ? micromips_op_hash : op_hash; |
4879 | amo = (struct mips_opcode *) hash_find (hash, name); | |
4880 | gas_assert (amo); | |
4881 | gas_assert (strcmp (name, amo->name) == 0); | |
1e915849 | 4882 | |
df58fc94 | 4883 | do |
8b082fb1 TS |
4884 | { |
4885 | /* Search until we get a match for NAME. It is assumed here that | |
df58fc94 RS |
4886 | macros will never generate MDMX, MIPS-3D, or MT instructions. |
4887 | We try to match an instruction that fulfils the branch delay | |
4888 | slot instruction length requirement (if any) of the previous | |
4889 | instruction. While doing this we record the first instruction | |
4890 | seen that matches all the other conditions and use it anyway | |
4891 | if the requirement cannot be met; we will issue an appropriate | |
4892 | warning later on. */ | |
4893 | if (strcmp (fmt, amo->args) == 0 | |
4894 | && amo->pinfo != INSN_MACRO | |
4895 | && is_opcode_valid (amo) | |
4896 | && is_size_valid (amo)) | |
4897 | { | |
4898 | if (is_delay_slot_valid (amo)) | |
4899 | { | |
4900 | mo = amo; | |
4901 | break; | |
4902 | } | |
4903 | else if (!mo) | |
4904 | mo = amo; | |
4905 | } | |
8b082fb1 | 4906 | |
df58fc94 RS |
4907 | ++amo; |
4908 | gas_assert (amo->name); | |
252b5132 | 4909 | } |
df58fc94 | 4910 | while (strcmp (name, amo->name) == 0); |
252b5132 | 4911 | |
df58fc94 | 4912 | gas_assert (mo); |
1e915849 | 4913 | create_insn (&insn, mo); |
252b5132 RH |
4914 | for (;;) |
4915 | { | |
4916 | switch (*fmt++) | |
4917 | { | |
4918 | case '\0': | |
4919 | break; | |
4920 | ||
4921 | case ',': | |
4922 | case '(': | |
4923 | case ')': | |
4924 | continue; | |
4925 | ||
5f74bc13 CD |
4926 | case '+': |
4927 | switch (*fmt++) | |
4928 | { | |
4929 | case 'A': | |
4930 | case 'E': | |
df58fc94 RS |
4931 | INSERT_OPERAND (mips_opts.micromips, |
4932 | EXTLSB, insn, va_arg (args, int)); | |
5f74bc13 CD |
4933 | continue; |
4934 | ||
4935 | case 'B': | |
4936 | case 'F': | |
4937 | /* Note that in the macro case, these arguments are already | |
4938 | in MSB form. (When handling the instruction in the | |
4939 | non-macro case, these arguments are sizes from which | |
4940 | MSB values must be calculated.) */ | |
df58fc94 RS |
4941 | INSERT_OPERAND (mips_opts.micromips, |
4942 | INSMSB, insn, va_arg (args, int)); | |
5f74bc13 CD |
4943 | continue; |
4944 | ||
4945 | case 'C': | |
4946 | case 'G': | |
4947 | case 'H': | |
4948 | /* Note that in the macro case, these arguments are already | |
4949 | in MSBD form. (When handling the instruction in the | |
4950 | non-macro case, these arguments are sizes from which | |
4951 | MSBD values must be calculated.) */ | |
df58fc94 RS |
4952 | INSERT_OPERAND (mips_opts.micromips, |
4953 | EXTMSBD, insn, va_arg (args, int)); | |
5f74bc13 CD |
4954 | continue; |
4955 | ||
dd3cbb7e | 4956 | case 'Q': |
df58fc94 RS |
4957 | gas_assert (!mips_opts.micromips); |
4958 | INSERT_OPERAND (0, SEQI, insn, va_arg (args, int)); | |
dd3cbb7e NC |
4959 | continue; |
4960 | ||
5f74bc13 CD |
4961 | default: |
4962 | internalError (); | |
4963 | } | |
4964 | continue; | |
4965 | ||
8b082fb1 | 4966 | case '2': |
03f66e8a | 4967 | INSERT_OPERAND (mips_opts.micromips, BP, insn, va_arg (args, int)); |
8b082fb1 TS |
4968 | continue; |
4969 | ||
df58fc94 RS |
4970 | case 'n': |
4971 | gas_assert (mips_opts.micromips); | |
252b5132 RH |
4972 | case 't': |
4973 | case 'w': | |
4974 | case 'E': | |
df58fc94 | 4975 | INSERT_OPERAND (mips_opts.micromips, RT, insn, va_arg (args, int)); |
252b5132 RH |
4976 | continue; |
4977 | ||
4978 | case 'c': | |
df58fc94 RS |
4979 | gas_assert (!mips_opts.micromips); |
4980 | INSERT_OPERAND (0, CODE, insn, va_arg (args, int)); | |
38487616 TS |
4981 | continue; |
4982 | ||
252b5132 | 4983 | case 'W': |
df58fc94 RS |
4984 | gas_assert (!mips_opts.micromips); |
4985 | case 'T': | |
4986 | INSERT_OPERAND (mips_opts.micromips, FT, insn, va_arg (args, int)); | |
252b5132 RH |
4987 | continue; |
4988 | ||
252b5132 | 4989 | case 'G': |
df58fc94 RS |
4990 | if (mips_opts.micromips) |
4991 | INSERT_OPERAND (1, RS, insn, va_arg (args, int)); | |
4992 | else | |
4993 | INSERT_OPERAND (0, RD, insn, va_arg (args, int)); | |
4994 | continue; | |
4995 | ||
af7ee8bf | 4996 | case 'K': |
df58fc94 RS |
4997 | gas_assert (!mips_opts.micromips); |
4998 | case 'd': | |
4999 | INSERT_OPERAND (mips_opts.micromips, RD, insn, va_arg (args, int)); | |
252b5132 RH |
5000 | continue; |
5001 | ||
4372b673 | 5002 | case 'U': |
df58fc94 | 5003 | gas_assert (!mips_opts.micromips); |
4372b673 NC |
5004 | { |
5005 | int tmp = va_arg (args, int); | |
5006 | ||
df58fc94 RS |
5007 | INSERT_OPERAND (0, RT, insn, tmp); |
5008 | INSERT_OPERAND (0, RD, insn, tmp); | |
4372b673 | 5009 | } |
df58fc94 | 5010 | continue; |
4372b673 | 5011 | |
252b5132 RH |
5012 | case 'V': |
5013 | case 'S': | |
df58fc94 RS |
5014 | gas_assert (!mips_opts.micromips); |
5015 | INSERT_OPERAND (0, FS, insn, va_arg (args, int)); | |
252b5132 RH |
5016 | continue; |
5017 | ||
5018 | case 'z': | |
5019 | continue; | |
5020 | ||
5021 | case '<': | |
df58fc94 RS |
5022 | INSERT_OPERAND (mips_opts.micromips, |
5023 | SHAMT, insn, va_arg (args, int)); | |
252b5132 RH |
5024 | continue; |
5025 | ||
5026 | case 'D': | |
df58fc94 RS |
5027 | gas_assert (!mips_opts.micromips); |
5028 | INSERT_OPERAND (0, FD, insn, va_arg (args, int)); | |
252b5132 RH |
5029 | continue; |
5030 | ||
5031 | case 'B': | |
df58fc94 RS |
5032 | gas_assert (!mips_opts.micromips); |
5033 | INSERT_OPERAND (0, CODE20, insn, va_arg (args, int)); | |
252b5132 RH |
5034 | continue; |
5035 | ||
4372b673 | 5036 | case 'J': |
df58fc94 RS |
5037 | gas_assert (!mips_opts.micromips); |
5038 | INSERT_OPERAND (0, CODE19, insn, va_arg (args, int)); | |
4372b673 NC |
5039 | continue; |
5040 | ||
252b5132 | 5041 | case 'q': |
df58fc94 RS |
5042 | gas_assert (!mips_opts.micromips); |
5043 | INSERT_OPERAND (0, CODE2, insn, va_arg (args, int)); | |
252b5132 RH |
5044 | continue; |
5045 | ||
5046 | case 'b': | |
5047 | case 's': | |
5048 | case 'r': | |
5049 | case 'v': | |
df58fc94 | 5050 | INSERT_OPERAND (mips_opts.micromips, RS, insn, va_arg (args, int)); |
252b5132 RH |
5051 | continue; |
5052 | ||
5053 | case 'i': | |
5054 | case 'j': | |
6e1304d8 | 5055 | macro_read_relocs (&args, r); |
9c2799c2 | 5056 | gas_assert (*r == BFD_RELOC_GPREL16 |
e391c024 RS |
5057 | || *r == BFD_RELOC_MIPS_HIGHER |
5058 | || *r == BFD_RELOC_HI16_S | |
5059 | || *r == BFD_RELOC_LO16 | |
5060 | || *r == BFD_RELOC_MIPS_GOT_OFST); | |
5061 | continue; | |
5062 | ||
5063 | case 'o': | |
5064 | macro_read_relocs (&args, r); | |
252b5132 RH |
5065 | continue; |
5066 | ||
5067 | case 'u': | |
6e1304d8 | 5068 | macro_read_relocs (&args, r); |
9c2799c2 | 5069 | gas_assert (ep != NULL |
90ecf173 MR |
5070 | && (ep->X_op == O_constant |
5071 | || (ep->X_op == O_symbol | |
5072 | && (*r == BFD_RELOC_MIPS_HIGHEST | |
5073 | || *r == BFD_RELOC_HI16_S | |
5074 | || *r == BFD_RELOC_HI16 | |
5075 | || *r == BFD_RELOC_GPREL16 | |
5076 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
5077 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); | |
252b5132 RH |
5078 | continue; |
5079 | ||
5080 | case 'p': | |
9c2799c2 | 5081 | gas_assert (ep != NULL); |
bad36eac | 5082 | |
252b5132 RH |
5083 | /* |
5084 | * This allows macro() to pass an immediate expression for | |
5085 | * creating short branches without creating a symbol. | |
bad36eac DJ |
5086 | * |
5087 | * We don't allow branch relaxation for these branches, as | |
5088 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
5089 | */ |
5090 | if (ep->X_op == O_constant) | |
5091 | { | |
df58fc94 RS |
5092 | /* For microMIPS we always use relocations for branches. |
5093 | So we should not resolve immediate values. */ | |
5094 | gas_assert (!mips_opts.micromips); | |
5095 | ||
bad36eac DJ |
5096 | if ((ep->X_add_number & 3) != 0) |
5097 | as_bad (_("branch to misaligned address (0x%lx)"), | |
5098 | (unsigned long) ep->X_add_number); | |
5099 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
5100 | as_bad (_("branch address range overflow (0x%lx)"), | |
5101 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
5102 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
5103 | ep = NULL; | |
5104 | } | |
5105 | else | |
0b25d3e6 | 5106 | *r = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
5107 | continue; |
5108 | ||
5109 | case 'a': | |
9c2799c2 | 5110 | gas_assert (ep != NULL); |
f6688943 | 5111 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
5112 | continue; |
5113 | ||
5114 | case 'C': | |
df58fc94 RS |
5115 | gas_assert (!mips_opts.micromips); |
5116 | INSERT_OPERAND (0, COPZ, insn, va_arg (args, unsigned long)); | |
252b5132 RH |
5117 | continue; |
5118 | ||
d43b4baf | 5119 | case 'k': |
df58fc94 RS |
5120 | INSERT_OPERAND (mips_opts.micromips, |
5121 | CACHE, insn, va_arg (args, unsigned long)); | |
5122 | continue; | |
5123 | ||
5124 | case '|': | |
5125 | gas_assert (mips_opts.micromips); | |
5126 | INSERT_OPERAND (1, TRAP, insn, va_arg (args, int)); | |
5127 | continue; | |
5128 | ||
5129 | case '.': | |
5130 | gas_assert (mips_opts.micromips); | |
5131 | INSERT_OPERAND (1, OFFSET10, insn, va_arg (args, int)); | |
5132 | continue; | |
5133 | ||
dec0624d MR |
5134 | case '\\': |
5135 | INSERT_OPERAND (mips_opts.micromips, | |
5136 | 3BITPOS, insn, va_arg (args, unsigned int)); | |
5137 | continue; | |
5138 | ||
df58fc94 | 5139 | case '~': |
dec0624d MR |
5140 | INSERT_OPERAND (mips_opts.micromips, |
5141 | OFFSET12, insn, va_arg (args, unsigned long)); | |
df58fc94 RS |
5142 | continue; |
5143 | ||
5144 | case 'N': | |
5145 | gas_assert (mips_opts.micromips); | |
5146 | INSERT_OPERAND (1, BCC, insn, va_arg (args, int)); | |
5147 | continue; | |
5148 | ||
5149 | case 'm': /* Opcode extension character. */ | |
5150 | gas_assert (mips_opts.micromips); | |
5151 | switch (*fmt++) | |
5152 | { | |
5153 | case 'j': | |
5154 | INSERT_OPERAND (1, MJ, insn, va_arg (args, int)); | |
5155 | break; | |
5156 | ||
5157 | case 'p': | |
5158 | INSERT_OPERAND (1, MP, insn, va_arg (args, int)); | |
5159 | break; | |
5160 | ||
5161 | case 'F': | |
5162 | INSERT_OPERAND (1, IMMF, insn, va_arg (args, int)); | |
5163 | break; | |
5164 | ||
5165 | default: | |
5166 | internalError (); | |
5167 | } | |
d43b4baf TS |
5168 | continue; |
5169 | ||
252b5132 RH |
5170 | default: |
5171 | internalError (); | |
5172 | } | |
5173 | break; | |
5174 | } | |
5175 | va_end (args); | |
9c2799c2 | 5176 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 5177 | |
df58fc94 | 5178 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
5179 | } |
5180 | ||
5181 | static void | |
67c0d1eb | 5182 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
03ea81db | 5183 | va_list *args) |
252b5132 | 5184 | { |
1e915849 | 5185 | struct mips_opcode *mo; |
252b5132 | 5186 | struct mips_cl_insn insn; |
f6688943 TS |
5187 | bfd_reloc_code_real_type r[3] |
5188 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 5189 | |
1e915849 | 5190 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
9c2799c2 NC |
5191 | gas_assert (mo); |
5192 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 | 5193 | |
1e915849 | 5194 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 5195 | { |
1e915849 | 5196 | ++mo; |
9c2799c2 NC |
5197 | gas_assert (mo->name); |
5198 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
5199 | } |
5200 | ||
1e915849 | 5201 | create_insn (&insn, mo); |
252b5132 RH |
5202 | for (;;) |
5203 | { | |
5204 | int c; | |
5205 | ||
5206 | c = *fmt++; | |
5207 | switch (c) | |
5208 | { | |
5209 | case '\0': | |
5210 | break; | |
5211 | ||
5212 | case ',': | |
5213 | case '(': | |
5214 | case ')': | |
5215 | continue; | |
5216 | ||
5217 | case 'y': | |
5218 | case 'w': | |
03ea81db | 5219 | MIPS16_INSERT_OPERAND (RY, insn, va_arg (*args, int)); |
252b5132 RH |
5220 | continue; |
5221 | ||
5222 | case 'x': | |
5223 | case 'v': | |
03ea81db | 5224 | MIPS16_INSERT_OPERAND (RX, insn, va_arg (*args, int)); |
252b5132 RH |
5225 | continue; |
5226 | ||
5227 | case 'z': | |
03ea81db | 5228 | MIPS16_INSERT_OPERAND (RZ, insn, va_arg (*args, int)); |
252b5132 RH |
5229 | continue; |
5230 | ||
5231 | case 'Z': | |
03ea81db | 5232 | MIPS16_INSERT_OPERAND (MOVE32Z, insn, va_arg (*args, int)); |
252b5132 RH |
5233 | continue; |
5234 | ||
5235 | case '0': | |
5236 | case 'S': | |
5237 | case 'P': | |
5238 | case 'R': | |
5239 | continue; | |
5240 | ||
5241 | case 'X': | |
03ea81db | 5242 | MIPS16_INSERT_OPERAND (REGR32, insn, va_arg (*args, int)); |
252b5132 RH |
5243 | continue; |
5244 | ||
5245 | case 'Y': | |
5246 | { | |
5247 | int regno; | |
5248 | ||
03ea81db | 5249 | regno = va_arg (*args, int); |
252b5132 | 5250 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); |
a9e24354 | 5251 | MIPS16_INSERT_OPERAND (REG32R, insn, regno); |
252b5132 RH |
5252 | } |
5253 | continue; | |
5254 | ||
5255 | case '<': | |
5256 | case '>': | |
5257 | case '4': | |
5258 | case '5': | |
5259 | case 'H': | |
5260 | case 'W': | |
5261 | case 'D': | |
5262 | case 'j': | |
5263 | case '8': | |
5264 | case 'V': | |
5265 | case 'C': | |
5266 | case 'U': | |
5267 | case 'k': | |
5268 | case 'K': | |
5269 | case 'p': | |
5270 | case 'q': | |
5271 | { | |
b886a2ab RS |
5272 | offsetT value; |
5273 | ||
9c2799c2 | 5274 | gas_assert (ep != NULL); |
252b5132 RH |
5275 | |
5276 | if (ep->X_op != O_constant) | |
874e8986 | 5277 | *r = (int) BFD_RELOC_UNUSED + c; |
b886a2ab | 5278 | else if (calculate_reloc (*r, ep->X_add_number, &value)) |
252b5132 | 5279 | { |
b886a2ab | 5280 | mips16_immed (NULL, 0, c, *r, value, 0, &insn.insn_opcode); |
252b5132 | 5281 | ep = NULL; |
f6688943 | 5282 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
5283 | } |
5284 | } | |
5285 | continue; | |
5286 | ||
5287 | case '6': | |
03ea81db | 5288 | MIPS16_INSERT_OPERAND (IMM6, insn, va_arg (*args, int)); |
252b5132 RH |
5289 | continue; |
5290 | } | |
5291 | ||
5292 | break; | |
5293 | } | |
5294 | ||
9c2799c2 | 5295 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 5296 | |
df58fc94 | 5297 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
5298 | } |
5299 | ||
2051e8c4 MR |
5300 | /* |
5301 | * Sign-extend 32-bit mode constants that have bit 31 set and all | |
5302 | * higher bits unset. | |
5303 | */ | |
9f872bbe | 5304 | static void |
2051e8c4 MR |
5305 | normalize_constant_expr (expressionS *ex) |
5306 | { | |
9ee2a2d4 | 5307 | if (ex->X_op == O_constant |
2051e8c4 MR |
5308 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) |
5309 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
5310 | - 0x80000000); | |
5311 | } | |
5312 | ||
5313 | /* | |
5314 | * Sign-extend 32-bit mode address offsets that have bit 31 set and | |
5315 | * all higher bits unset. | |
5316 | */ | |
5317 | static void | |
5318 | normalize_address_expr (expressionS *ex) | |
5319 | { | |
5320 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
5321 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
5322 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
5323 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
5324 | - 0x80000000); | |
5325 | } | |
5326 | ||
438c16b8 TS |
5327 | /* |
5328 | * Generate a "jalr" instruction with a relocation hint to the called | |
5329 | * function. This occurs in NewABI PIC code. | |
5330 | */ | |
5331 | static void | |
df58fc94 | 5332 | macro_build_jalr (expressionS *ep, int cprestore) |
438c16b8 | 5333 | { |
df58fc94 RS |
5334 | static const bfd_reloc_code_real_type jalr_relocs[2] |
5335 | = { BFD_RELOC_MIPS_JALR, BFD_RELOC_MICROMIPS_JALR }; | |
5336 | bfd_reloc_code_real_type jalr_reloc = jalr_relocs[mips_opts.micromips]; | |
5337 | const char *jalr; | |
685736be | 5338 | char *f = NULL; |
b34976b6 | 5339 | |
1180b5a4 | 5340 | if (MIPS_JALR_HINT_P (ep)) |
f21f8242 | 5341 | { |
cc3d92a5 | 5342 | frag_grow (8); |
f21f8242 AO |
5343 | f = frag_more (0); |
5344 | } | |
2906b037 | 5345 | if (mips_opts.micromips) |
df58fc94 RS |
5346 | { |
5347 | jalr = mips_opts.noreorder && !cprestore ? "jalr" : "jalrs"; | |
e64af278 MR |
5348 | if (MIPS_JALR_HINT_P (ep) |
5349 | || (history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
df58fc94 RS |
5350 | macro_build (NULL, jalr, "t,s", RA, PIC_CALL_REG); |
5351 | else | |
5352 | macro_build (NULL, jalr, "mj", PIC_CALL_REG); | |
5353 | } | |
2906b037 MR |
5354 | else |
5355 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); | |
1180b5a4 | 5356 | if (MIPS_JALR_HINT_P (ep)) |
df58fc94 | 5357 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, ep, FALSE, jalr_reloc); |
438c16b8 TS |
5358 | } |
5359 | ||
252b5132 RH |
5360 | /* |
5361 | * Generate a "lui" instruction. | |
5362 | */ | |
5363 | static void | |
67c0d1eb | 5364 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 | 5365 | { |
9c2799c2 | 5366 | gas_assert (! mips_opts.mips16); |
252b5132 | 5367 | |
df58fc94 | 5368 | if (ep->X_op != O_constant) |
252b5132 | 5369 | { |
9c2799c2 | 5370 | gas_assert (ep->X_op == O_symbol); |
bbe506e8 TS |
5371 | /* _gp_disp is a special case, used from s_cpload. |
5372 | __gnu_local_gp is used if mips_no_shared. */ | |
9c2799c2 | 5373 | gas_assert (mips_pic == NO_PIC |
78e1bb40 | 5374 | || (! HAVE_NEWABI |
aa6975fb ILT |
5375 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
5376 | || (! mips_in_shared | |
bbe506e8 TS |
5377 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
5378 | "__gnu_local_gp") == 0)); | |
252b5132 RH |
5379 | } |
5380 | ||
df58fc94 | 5381 | macro_build (ep, "lui", LUI_FMT, regnum, BFD_RELOC_HI16_S); |
252b5132 RH |
5382 | } |
5383 | ||
885add95 CD |
5384 | /* Generate a sequence of instructions to do a load or store from a constant |
5385 | offset off of a base register (breg) into/from a target register (treg), | |
5386 | using AT if necessary. */ | |
5387 | static void | |
67c0d1eb RS |
5388 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
5389 | int treg, int breg, int dbl) | |
885add95 | 5390 | { |
9c2799c2 | 5391 | gas_assert (ep->X_op == O_constant); |
885add95 | 5392 | |
256ab948 | 5393 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
5394 | if (!dbl) |
5395 | normalize_constant_expr (ep); | |
256ab948 | 5396 | |
67c1ffbe | 5397 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 5398 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
5399 | as_warn (_("operand overflow")); |
5400 | ||
5401 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
5402 | { | |
5403 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 5404 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
5405 | } |
5406 | else | |
5407 | { | |
5408 | /* 32-bit offset, need multiple instructions and AT, like: | |
5409 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
5410 | addu $tempreg,$tempreg,$breg | |
5411 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
5412 | to handle the complete offset. */ | |
67c0d1eb RS |
5413 | macro_build_lui (ep, AT); |
5414 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
5415 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 | 5416 | |
741fe287 | 5417 | if (!mips_opts.at) |
8fc2e39e | 5418 | as_bad (_("Macro used $at after \".set noat\"")); |
885add95 CD |
5419 | } |
5420 | } | |
5421 | ||
252b5132 RH |
5422 | /* set_at() |
5423 | * Generates code to set the $at register to true (one) | |
5424 | * if reg is less than the immediate expression. | |
5425 | */ | |
5426 | static void | |
67c0d1eb | 5427 | set_at (int reg, int unsignedp) |
252b5132 RH |
5428 | { |
5429 | if (imm_expr.X_op == O_constant | |
5430 | && imm_expr.X_add_number >= -0x8000 | |
5431 | && imm_expr.X_add_number < 0x8000) | |
67c0d1eb RS |
5432 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
5433 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
5434 | else |
5435 | { | |
67c0d1eb RS |
5436 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
5437 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); | |
252b5132 RH |
5438 | } |
5439 | } | |
5440 | ||
5441 | /* Warn if an expression is not a constant. */ | |
5442 | ||
5443 | static void | |
17a2f251 | 5444 | check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex) |
252b5132 RH |
5445 | { |
5446 | if (ex->X_op == O_big) | |
5447 | as_bad (_("unsupported large constant")); | |
5448 | else if (ex->X_op != O_constant) | |
9ee2a2d4 MR |
5449 | as_bad (_("Instruction %s requires absolute expression"), |
5450 | ip->insn_mo->name); | |
13757d0c | 5451 | |
9ee2a2d4 MR |
5452 | if (HAVE_32BIT_GPRS) |
5453 | normalize_constant_expr (ex); | |
252b5132 RH |
5454 | } |
5455 | ||
5456 | /* Count the leading zeroes by performing a binary chop. This is a | |
5457 | bulky bit of source, but performance is a LOT better for the | |
5458 | majority of values than a simple loop to count the bits: | |
5459 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
5460 | if ((v) & (1 << (31 - lcnt))) | |
5461 | break; | |
5462 | However it is not code size friendly, and the gain will drop a bit | |
5463 | on certain cached systems. | |
5464 | */ | |
5465 | #define COUNT_TOP_ZEROES(v) \ | |
5466 | (((v) & ~0xffff) == 0 \ | |
5467 | ? ((v) & ~0xff) == 0 \ | |
5468 | ? ((v) & ~0xf) == 0 \ | |
5469 | ? ((v) & ~0x3) == 0 \ | |
5470 | ? ((v) & ~0x1) == 0 \ | |
5471 | ? !(v) \ | |
5472 | ? 32 \ | |
5473 | : 31 \ | |
5474 | : 30 \ | |
5475 | : ((v) & ~0x7) == 0 \ | |
5476 | ? 29 \ | |
5477 | : 28 \ | |
5478 | : ((v) & ~0x3f) == 0 \ | |
5479 | ? ((v) & ~0x1f) == 0 \ | |
5480 | ? 27 \ | |
5481 | : 26 \ | |
5482 | : ((v) & ~0x7f) == 0 \ | |
5483 | ? 25 \ | |
5484 | : 24 \ | |
5485 | : ((v) & ~0xfff) == 0 \ | |
5486 | ? ((v) & ~0x3ff) == 0 \ | |
5487 | ? ((v) & ~0x1ff) == 0 \ | |
5488 | ? 23 \ | |
5489 | : 22 \ | |
5490 | : ((v) & ~0x7ff) == 0 \ | |
5491 | ? 21 \ | |
5492 | : 20 \ | |
5493 | : ((v) & ~0x3fff) == 0 \ | |
5494 | ? ((v) & ~0x1fff) == 0 \ | |
5495 | ? 19 \ | |
5496 | : 18 \ | |
5497 | : ((v) & ~0x7fff) == 0 \ | |
5498 | ? 17 \ | |
5499 | : 16 \ | |
5500 | : ((v) & ~0xffffff) == 0 \ | |
5501 | ? ((v) & ~0xfffff) == 0 \ | |
5502 | ? ((v) & ~0x3ffff) == 0 \ | |
5503 | ? ((v) & ~0x1ffff) == 0 \ | |
5504 | ? 15 \ | |
5505 | : 14 \ | |
5506 | : ((v) & ~0x7ffff) == 0 \ | |
5507 | ? 13 \ | |
5508 | : 12 \ | |
5509 | : ((v) & ~0x3fffff) == 0 \ | |
5510 | ? ((v) & ~0x1fffff) == 0 \ | |
5511 | ? 11 \ | |
5512 | : 10 \ | |
5513 | : ((v) & ~0x7fffff) == 0 \ | |
5514 | ? 9 \ | |
5515 | : 8 \ | |
5516 | : ((v) & ~0xfffffff) == 0 \ | |
5517 | ? ((v) & ~0x3ffffff) == 0 \ | |
5518 | ? ((v) & ~0x1ffffff) == 0 \ | |
5519 | ? 7 \ | |
5520 | : 6 \ | |
5521 | : ((v) & ~0x7ffffff) == 0 \ | |
5522 | ? 5 \ | |
5523 | : 4 \ | |
5524 | : ((v) & ~0x3fffffff) == 0 \ | |
5525 | ? ((v) & ~0x1fffffff) == 0 \ | |
5526 | ? 3 \ | |
5527 | : 2 \ | |
5528 | : ((v) & ~0x7fffffff) == 0 \ | |
5529 | ? 1 \ | |
5530 | : 0) | |
5531 | ||
5532 | /* load_register() | |
67c1ffbe | 5533 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
5534 | * an absolute expression value into a register. |
5535 | */ | |
5536 | static void | |
67c0d1eb | 5537 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
5538 | { |
5539 | int freg; | |
5540 | expressionS hi32, lo32; | |
5541 | ||
5542 | if (ep->X_op != O_big) | |
5543 | { | |
9c2799c2 | 5544 | gas_assert (ep->X_op == O_constant); |
256ab948 TS |
5545 | |
5546 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
5547 | if (!dbl) |
5548 | normalize_constant_expr (ep); | |
256ab948 TS |
5549 | |
5550 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
5551 | { |
5552 | /* We can handle 16 bit signed values with an addiu to | |
5553 | $zero. No need to ever use daddiu here, since $zero and | |
5554 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 5555 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5556 | return; |
5557 | } | |
5558 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
5559 | { | |
5560 | /* We can handle 16 bit unsigned values with an ori to | |
5561 | $zero. */ | |
67c0d1eb | 5562 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5563 | return; |
5564 | } | |
256ab948 | 5565 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
5566 | { |
5567 | /* 32 bit values require an lui. */ | |
df58fc94 | 5568 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 5569 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 5570 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
5571 | return; |
5572 | } | |
5573 | } | |
5574 | ||
5575 | /* The value is larger than 32 bits. */ | |
5576 | ||
2051e8c4 | 5577 | if (!dbl || HAVE_32BIT_GPRS) |
252b5132 | 5578 | { |
55e08f71 NC |
5579 | char value[32]; |
5580 | ||
5581 | sprintf_vma (value, ep->X_add_number); | |
20e1fcfd | 5582 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 5583 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5584 | return; |
5585 | } | |
5586 | ||
5587 | if (ep->X_op != O_big) | |
5588 | { | |
5589 | hi32 = *ep; | |
5590 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
5591 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
5592 | hi32.X_add_number &= 0xffffffff; | |
5593 | lo32 = *ep; | |
5594 | lo32.X_add_number &= 0xffffffff; | |
5595 | } | |
5596 | else | |
5597 | { | |
9c2799c2 | 5598 | gas_assert (ep->X_add_number > 2); |
252b5132 RH |
5599 | if (ep->X_add_number == 3) |
5600 | generic_bignum[3] = 0; | |
5601 | else if (ep->X_add_number > 4) | |
5602 | as_bad (_("Number larger than 64 bits")); | |
5603 | lo32.X_op = O_constant; | |
5604 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
5605 | hi32.X_op = O_constant; | |
5606 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
5607 | } | |
5608 | ||
5609 | if (hi32.X_add_number == 0) | |
5610 | freg = 0; | |
5611 | else | |
5612 | { | |
5613 | int shift, bit; | |
5614 | unsigned long hi, lo; | |
5615 | ||
956cd1d6 | 5616 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
5617 | { |
5618 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
5619 | { | |
67c0d1eb | 5620 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
5621 | return; |
5622 | } | |
5623 | if (lo32.X_add_number & 0x80000000) | |
5624 | { | |
df58fc94 | 5625 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 5626 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 5627 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
5628 | return; |
5629 | } | |
5630 | } | |
252b5132 RH |
5631 | |
5632 | /* Check for 16bit shifted constant. We know that hi32 is | |
5633 | non-zero, so start the mask on the first bit of the hi32 | |
5634 | value. */ | |
5635 | shift = 17; | |
5636 | do | |
beae10d5 KH |
5637 | { |
5638 | unsigned long himask, lomask; | |
5639 | ||
5640 | if (shift < 32) | |
5641 | { | |
5642 | himask = 0xffff >> (32 - shift); | |
5643 | lomask = (0xffff << shift) & 0xffffffff; | |
5644 | } | |
5645 | else | |
5646 | { | |
5647 | himask = 0xffff << (shift - 32); | |
5648 | lomask = 0; | |
5649 | } | |
5650 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
5651 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
5652 | { | |
5653 | expressionS tmp; | |
5654 | ||
5655 | tmp.X_op = O_constant; | |
5656 | if (shift < 32) | |
5657 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
5658 | | (lo32.X_add_number >> shift)); | |
5659 | else | |
5660 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb | 5661 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
df58fc94 | 5662 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 5663 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
5664 | return; |
5665 | } | |
f9419b05 | 5666 | ++shift; |
beae10d5 KH |
5667 | } |
5668 | while (shift <= (64 - 16)); | |
252b5132 RH |
5669 | |
5670 | /* Find the bit number of the lowest one bit, and store the | |
5671 | shifted value in hi/lo. */ | |
5672 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
5673 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
5674 | if (lo != 0) | |
5675 | { | |
5676 | bit = 0; | |
5677 | while ((lo & 1) == 0) | |
5678 | { | |
5679 | lo >>= 1; | |
5680 | ++bit; | |
5681 | } | |
5682 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
5683 | hi >>= bit; | |
5684 | } | |
5685 | else | |
5686 | { | |
5687 | bit = 32; | |
5688 | while ((hi & 1) == 0) | |
5689 | { | |
5690 | hi >>= 1; | |
5691 | ++bit; | |
5692 | } | |
5693 | lo = hi; | |
5694 | hi = 0; | |
5695 | } | |
5696 | ||
5697 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
5698 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
5699 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
5700 | { |
5701 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 5702 | if (shift != 0) |
beae10d5 | 5703 | { |
252b5132 RH |
5704 | expressionS tmp; |
5705 | ||
5706 | /* This instruction will set the register to be all | |
5707 | ones. */ | |
beae10d5 KH |
5708 | tmp.X_op = O_constant; |
5709 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 5710 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
5711 | if (bit != 0) |
5712 | { | |
5713 | bit += shift; | |
df58fc94 | 5714 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 5715 | reg, reg, (bit >= 32) ? bit - 32 : bit); |
beae10d5 | 5716 | } |
df58fc94 | 5717 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", SHFT_FMT, |
67c0d1eb | 5718 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
5719 | return; |
5720 | } | |
5721 | } | |
252b5132 RH |
5722 | |
5723 | /* Sign extend hi32 before calling load_register, because we can | |
5724 | generally get better code when we load a sign extended value. */ | |
5725 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 5726 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 5727 | load_register (reg, &hi32, 0); |
252b5132 RH |
5728 | freg = reg; |
5729 | } | |
5730 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
5731 | { | |
5732 | if (freg != 0) | |
5733 | { | |
df58fc94 | 5734 | macro_build (NULL, "dsll32", SHFT_FMT, reg, freg, 0); |
252b5132 RH |
5735 | freg = reg; |
5736 | } | |
5737 | } | |
5738 | else | |
5739 | { | |
5740 | expressionS mid16; | |
5741 | ||
956cd1d6 | 5742 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 5743 | { |
df58fc94 RS |
5744 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
5745 | macro_build (NULL, "dsrl32", SHFT_FMT, reg, reg, 0); | |
beae10d5 KH |
5746 | return; |
5747 | } | |
252b5132 RH |
5748 | |
5749 | if (freg != 0) | |
5750 | { | |
df58fc94 | 5751 | macro_build (NULL, "dsll", SHFT_FMT, reg, freg, 16); |
252b5132 RH |
5752 | freg = reg; |
5753 | } | |
5754 | mid16 = lo32; | |
5755 | mid16.X_add_number >>= 16; | |
67c0d1eb | 5756 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
df58fc94 | 5757 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
252b5132 RH |
5758 | freg = reg; |
5759 | } | |
5760 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 5761 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
5762 | } |
5763 | ||
269137b2 TS |
5764 | static inline void |
5765 | load_delay_nop (void) | |
5766 | { | |
5767 | if (!gpr_interlocks) | |
5768 | macro_build (NULL, "nop", ""); | |
5769 | } | |
5770 | ||
252b5132 RH |
5771 | /* Load an address into a register. */ |
5772 | ||
5773 | static void | |
67c0d1eb | 5774 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 5775 | { |
252b5132 RH |
5776 | if (ep->X_op != O_constant |
5777 | && ep->X_op != O_symbol) | |
5778 | { | |
5779 | as_bad (_("expression too complex")); | |
5780 | ep->X_op = O_constant; | |
5781 | } | |
5782 | ||
5783 | if (ep->X_op == O_constant) | |
5784 | { | |
67c0d1eb | 5785 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
5786 | return; |
5787 | } | |
5788 | ||
5789 | if (mips_pic == NO_PIC) | |
5790 | { | |
5791 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 5792 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
5793 | Otherwise we want |
5794 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
5795 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 5796 | If we have an addend, we always use the latter form. |
76b3015f | 5797 | |
d6bc6245 TS |
5798 | With 64bit address space and a usable $at we want |
5799 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5800 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5801 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5802 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
5803 | dsll32 $reg,0 | |
3a482fd5 | 5804 | daddu $reg,$reg,$at |
76b3015f | 5805 | |
c03099e6 | 5806 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
5807 | on superscalar processors. |
5808 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5809 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5810 | dsll $reg,16 | |
5811 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
5812 | dsll $reg,16 | |
5813 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
5814 | |
5815 | For GP relative symbols in 64bit address space we can use | |
5816 | the same sequence as in 32bit address space. */ | |
aed1a261 | 5817 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 5818 | { |
6caf9ef4 TS |
5819 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
5820 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
5821 | { | |
5822 | relax_start (ep->X_add_symbol); | |
5823 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
5824 | mips_gp_register, BFD_RELOC_GPREL16); | |
5825 | relax_switch (); | |
5826 | } | |
d6bc6245 | 5827 | |
741fe287 | 5828 | if (*used_at == 0 && mips_opts.at) |
d6bc6245 | 5829 | { |
df58fc94 RS |
5830 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
5831 | macro_build (ep, "lui", LUI_FMT, AT, BFD_RELOC_HI16_S); | |
67c0d1eb RS |
5832 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
5833 | BFD_RELOC_MIPS_HIGHER); | |
5834 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
df58fc94 | 5835 | macro_build (NULL, "dsll32", SHFT_FMT, reg, reg, 0); |
67c0d1eb | 5836 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); |
d6bc6245 TS |
5837 | *used_at = 1; |
5838 | } | |
5839 | else | |
5840 | { | |
df58fc94 | 5841 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb RS |
5842 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
5843 | BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 5844 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 5845 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); |
df58fc94 | 5846 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 5847 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); |
d6bc6245 | 5848 | } |
6caf9ef4 TS |
5849 | |
5850 | if (mips_relax.sequence) | |
5851 | relax_end (); | |
d6bc6245 | 5852 | } |
252b5132 RH |
5853 | else |
5854 | { | |
d6bc6245 | 5855 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 5856 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 5857 | { |
4d7206a2 | 5858 | relax_start (ep->X_add_symbol); |
67c0d1eb | 5859 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 5860 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 5861 | relax_switch (); |
d6bc6245 | 5862 | } |
67c0d1eb RS |
5863 | macro_build_lui (ep, reg); |
5864 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
5865 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
5866 | if (mips_relax.sequence) |
5867 | relax_end (); | |
d6bc6245 | 5868 | } |
252b5132 | 5869 | } |
0a44bf69 | 5870 | else if (!mips_big_got) |
252b5132 RH |
5871 | { |
5872 | expressionS ex; | |
5873 | ||
5874 | /* If this is a reference to an external symbol, we want | |
5875 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5876 | Otherwise we want | |
5877 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5878 | nop | |
5879 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
5880 | If there is a constant, it must be added in after. |
5881 | ||
ed6fb7bd | 5882 | If we have NewABI, we want |
f5040a92 AO |
5883 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
5884 | unless we're referencing a global symbol with a non-zero | |
5885 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
5886 | if (HAVE_NEWABI) |
5887 | { | |
f5040a92 AO |
5888 | if (ep->X_add_number) |
5889 | { | |
4d7206a2 | 5890 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 5891 | ep->X_add_number = 0; |
4d7206a2 | 5892 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
5893 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
5894 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5895 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
5896 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5897 | ex.X_op = O_constant; | |
67c0d1eb | 5898 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5899 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 5900 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 5901 | relax_switch (); |
f5040a92 | 5902 | } |
67c0d1eb | 5903 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5904 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
5905 | if (mips_relax.sequence) |
5906 | relax_end (); | |
ed6fb7bd SC |
5907 | } |
5908 | else | |
5909 | { | |
f5040a92 AO |
5910 | ex.X_add_number = ep->X_add_number; |
5911 | ep->X_add_number = 0; | |
67c0d1eb RS |
5912 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
5913 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 5914 | load_delay_nop (); |
4d7206a2 RS |
5915 | relax_start (ep->X_add_symbol); |
5916 | relax_switch (); | |
67c0d1eb | 5917 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 5918 | BFD_RELOC_LO16); |
4d7206a2 | 5919 | relax_end (); |
ed6fb7bd | 5920 | |
f5040a92 AO |
5921 | if (ex.X_add_number != 0) |
5922 | { | |
5923 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
5924 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5925 | ex.X_op = O_constant; | |
67c0d1eb | 5926 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5927 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 5928 | } |
252b5132 RH |
5929 | } |
5930 | } | |
0a44bf69 | 5931 | else if (mips_big_got) |
252b5132 RH |
5932 | { |
5933 | expressionS ex; | |
252b5132 RH |
5934 | |
5935 | /* This is the large GOT case. If this is a reference to an | |
5936 | external symbol, we want | |
5937 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5938 | addu $reg,$reg,$gp | |
5939 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
5940 | |
5941 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
5942 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
5943 | nop | |
5944 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 5945 | If there is a constant, it must be added in after. |
f5040a92 AO |
5946 | |
5947 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
5948 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
5949 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 5950 | */ |
438c16b8 TS |
5951 | if (HAVE_NEWABI) |
5952 | { | |
4d7206a2 | 5953 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 5954 | ep->X_add_number = 0; |
4d7206a2 | 5955 | relax_start (ep->X_add_symbol); |
df58fc94 | 5956 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
5957 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5958 | reg, reg, mips_gp_register); | |
5959 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
5960 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
5961 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
5962 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5963 | else if (ex.X_add_number) | |
5964 | { | |
5965 | ex.X_op = O_constant; | |
67c0d1eb RS |
5966 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5967 | BFD_RELOC_LO16); | |
f5040a92 AO |
5968 | } |
5969 | ||
5970 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 5971 | relax_switch (); |
67c0d1eb | 5972 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5973 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
5974 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5975 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 5976 | relax_end (); |
438c16b8 | 5977 | } |
252b5132 | 5978 | else |
438c16b8 | 5979 | { |
f5040a92 AO |
5980 | ex.X_add_number = ep->X_add_number; |
5981 | ep->X_add_number = 0; | |
4d7206a2 | 5982 | relax_start (ep->X_add_symbol); |
df58fc94 | 5983 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
5984 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5985 | reg, reg, mips_gp_register); | |
5986 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
5987 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
5988 | relax_switch (); |
5989 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
5990 | { |
5991 | /* We need a nop before loading from $gp. This special | |
5992 | check is required because the lui which starts the main | |
5993 | instruction stream does not refer to $gp, and so will not | |
5994 | insert the nop which may be required. */ | |
67c0d1eb | 5995 | macro_build (NULL, "nop", ""); |
438c16b8 | 5996 | } |
67c0d1eb | 5997 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5998 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 5999 | load_delay_nop (); |
67c0d1eb | 6000 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 6001 | BFD_RELOC_LO16); |
4d7206a2 | 6002 | relax_end (); |
438c16b8 | 6003 | |
f5040a92 AO |
6004 | if (ex.X_add_number != 0) |
6005 | { | |
6006 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
6007 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
6008 | ex.X_op = O_constant; | |
67c0d1eb RS |
6009 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
6010 | BFD_RELOC_LO16); | |
f5040a92 | 6011 | } |
252b5132 RH |
6012 | } |
6013 | } | |
252b5132 RH |
6014 | else |
6015 | abort (); | |
8fc2e39e | 6016 | |
741fe287 | 6017 | if (!mips_opts.at && *used_at == 1) |
8fc2e39e | 6018 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
6019 | } |
6020 | ||
ea1fb5dc RS |
6021 | /* Move the contents of register SOURCE into register DEST. */ |
6022 | ||
6023 | static void | |
67c0d1eb | 6024 | move_register (int dest, int source) |
ea1fb5dc | 6025 | { |
df58fc94 RS |
6026 | /* Prefer to use a 16-bit microMIPS instruction unless the previous |
6027 | instruction specifically requires a 32-bit one. */ | |
6028 | if (mips_opts.micromips | |
6029 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
7951ca42 | 6030 | macro_build (NULL, "move", "mp,mj", dest, source); |
df58fc94 RS |
6031 | else |
6032 | macro_build (NULL, HAVE_32BIT_GPRS ? "addu" : "daddu", "d,v,t", | |
6033 | dest, source, 0); | |
ea1fb5dc RS |
6034 | } |
6035 | ||
4d7206a2 | 6036 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
6037 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
6038 | The two alternatives are: | |
4d7206a2 RS |
6039 | |
6040 | Global symbol Local sybmol | |
6041 | ------------- ------------ | |
6042 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
6043 | ... ... | |
6044 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
6045 | ||
6046 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
6047 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
6048 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
6049 | |
6050 | static void | |
67c0d1eb | 6051 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
6052 | { |
6053 | expressionS global; | |
6054 | ||
6055 | global = *local; | |
6056 | global.X_add_number = 0; | |
6057 | ||
6058 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
6059 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
6060 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 6061 | relax_switch (); |
67c0d1eb RS |
6062 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
6063 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
6064 | relax_end (); |
6065 | } | |
6066 | ||
6067 | static void | |
67c0d1eb | 6068 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
6069 | { |
6070 | expressionS global; | |
6071 | ||
6072 | global.X_op = O_constant; | |
6073 | global.X_op_symbol = NULL; | |
6074 | global.X_add_symbol = NULL; | |
6075 | global.X_add_number = local->X_add_number; | |
6076 | ||
6077 | relax_start (local->X_add_symbol); | |
67c0d1eb | 6078 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
6079 | dest, dest, BFD_RELOC_LO16); |
6080 | relax_switch (); | |
67c0d1eb | 6081 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
6082 | relax_end (); |
6083 | } | |
6084 | ||
f6a22291 MR |
6085 | static void |
6086 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
6087 | { | |
6088 | expressionS global; | |
6089 | int hold_mips_optimize; | |
6090 | ||
6091 | global.X_op = O_constant; | |
6092 | global.X_op_symbol = NULL; | |
6093 | global.X_add_symbol = NULL; | |
6094 | global.X_add_number = local->X_add_number; | |
6095 | ||
6096 | relax_start (local->X_add_symbol); | |
6097 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
6098 | relax_switch (); | |
6099 | /* Set mips_optimize around the lui instruction to avoid | |
6100 | inserting an unnecessary nop after the lw. */ | |
6101 | hold_mips_optimize = mips_optimize; | |
6102 | mips_optimize = 2; | |
6103 | macro_build_lui (&global, tmp); | |
6104 | mips_optimize = hold_mips_optimize; | |
6105 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
6106 | relax_end (); | |
6107 | ||
6108 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
6109 | } | |
6110 | ||
df58fc94 RS |
6111 | /* Emit a sequence of instructions to emulate a branch likely operation. |
6112 | BR is an ordinary branch corresponding to one to be emulated. BRNEG | |
6113 | is its complementing branch with the original condition negated. | |
6114 | CALL is set if the original branch specified the link operation. | |
6115 | EP, FMT, SREG and TREG specify the usual macro_build() parameters. | |
6116 | ||
6117 | Code like this is produced in the noreorder mode: | |
6118 | ||
6119 | BRNEG <args>, 1f | |
6120 | nop | |
6121 | b <sym> | |
6122 | delay slot (executed only if branch taken) | |
6123 | 1: | |
6124 | ||
6125 | or, if CALL is set: | |
6126 | ||
6127 | BRNEG <args>, 1f | |
6128 | nop | |
6129 | bal <sym> | |
6130 | delay slot (executed only if branch taken) | |
6131 | 1: | |
6132 | ||
6133 | In the reorder mode the delay slot would be filled with a nop anyway, | |
6134 | so code produced is simply: | |
6135 | ||
6136 | BR <args>, <sym> | |
6137 | nop | |
6138 | ||
6139 | This function is used when producing code for the microMIPS ASE that | |
6140 | does not implement branch likely instructions in hardware. */ | |
6141 | ||
6142 | static void | |
6143 | macro_build_branch_likely (const char *br, const char *brneg, | |
6144 | int call, expressionS *ep, const char *fmt, | |
6145 | unsigned int sreg, unsigned int treg) | |
6146 | { | |
6147 | int noreorder = mips_opts.noreorder; | |
6148 | expressionS expr1; | |
6149 | ||
6150 | gas_assert (mips_opts.micromips); | |
6151 | start_noreorder (); | |
6152 | if (noreorder) | |
6153 | { | |
6154 | micromips_label_expr (&expr1); | |
6155 | macro_build (&expr1, brneg, fmt, sreg, treg); | |
6156 | macro_build (NULL, "nop", ""); | |
6157 | macro_build (ep, call ? "bal" : "b", "p"); | |
6158 | ||
6159 | /* Set to true so that append_insn adds a label. */ | |
6160 | emit_branch_likely_macro = TRUE; | |
6161 | } | |
6162 | else | |
6163 | { | |
6164 | macro_build (ep, br, fmt, sreg, treg); | |
6165 | macro_build (NULL, "nop", ""); | |
6166 | } | |
6167 | end_noreorder (); | |
6168 | } | |
6169 | ||
6170 | /* Emit a coprocessor branch-likely macro specified by TYPE, using CC as | |
6171 | the condition code tested. EP specifies the branch target. */ | |
6172 | ||
6173 | static void | |
6174 | macro_build_branch_ccl (int type, expressionS *ep, unsigned int cc) | |
6175 | { | |
6176 | const int call = 0; | |
6177 | const char *brneg; | |
6178 | const char *br; | |
6179 | ||
6180 | switch (type) | |
6181 | { | |
6182 | case M_BC1FL: | |
6183 | br = "bc1f"; | |
6184 | brneg = "bc1t"; | |
6185 | break; | |
6186 | case M_BC1TL: | |
6187 | br = "bc1t"; | |
6188 | brneg = "bc1f"; | |
6189 | break; | |
6190 | case M_BC2FL: | |
6191 | br = "bc2f"; | |
6192 | brneg = "bc2t"; | |
6193 | break; | |
6194 | case M_BC2TL: | |
6195 | br = "bc2t"; | |
6196 | brneg = "bc2f"; | |
6197 | break; | |
6198 | default: | |
6199 | abort (); | |
6200 | } | |
6201 | macro_build_branch_likely (br, brneg, call, ep, "N,p", cc, ZERO); | |
6202 | } | |
6203 | ||
6204 | /* Emit a two-argument branch macro specified by TYPE, using SREG as | |
6205 | the register tested. EP specifies the branch target. */ | |
6206 | ||
6207 | static void | |
6208 | macro_build_branch_rs (int type, expressionS *ep, unsigned int sreg) | |
6209 | { | |
6210 | const char *brneg = NULL; | |
6211 | const char *br; | |
6212 | int call = 0; | |
6213 | ||
6214 | switch (type) | |
6215 | { | |
6216 | case M_BGEZ: | |
6217 | br = "bgez"; | |
6218 | break; | |
6219 | case M_BGEZL: | |
6220 | br = mips_opts.micromips ? "bgez" : "bgezl"; | |
6221 | brneg = "bltz"; | |
6222 | break; | |
6223 | case M_BGEZALL: | |
6224 | gas_assert (mips_opts.micromips); | |
6225 | br = "bgezals"; | |
6226 | brneg = "bltz"; | |
6227 | call = 1; | |
6228 | break; | |
6229 | case M_BGTZ: | |
6230 | br = "bgtz"; | |
6231 | break; | |
6232 | case M_BGTZL: | |
6233 | br = mips_opts.micromips ? "bgtz" : "bgtzl"; | |
6234 | brneg = "blez"; | |
6235 | break; | |
6236 | case M_BLEZ: | |
6237 | br = "blez"; | |
6238 | break; | |
6239 | case M_BLEZL: | |
6240 | br = mips_opts.micromips ? "blez" : "blezl"; | |
6241 | brneg = "bgtz"; | |
6242 | break; | |
6243 | case M_BLTZ: | |
6244 | br = "bltz"; | |
6245 | break; | |
6246 | case M_BLTZL: | |
6247 | br = mips_opts.micromips ? "bltz" : "bltzl"; | |
6248 | brneg = "bgez"; | |
6249 | break; | |
6250 | case M_BLTZALL: | |
6251 | gas_assert (mips_opts.micromips); | |
6252 | br = "bltzals"; | |
6253 | brneg = "bgez"; | |
6254 | call = 1; | |
6255 | break; | |
6256 | default: | |
6257 | abort (); | |
6258 | } | |
6259 | if (mips_opts.micromips && brneg) | |
6260 | macro_build_branch_likely (br, brneg, call, ep, "s,p", sreg, ZERO); | |
6261 | else | |
6262 | macro_build (ep, br, "s,p", sreg); | |
6263 | } | |
6264 | ||
6265 | /* Emit a three-argument branch macro specified by TYPE, using SREG and | |
6266 | TREG as the registers tested. EP specifies the branch target. */ | |
6267 | ||
6268 | static void | |
6269 | macro_build_branch_rsrt (int type, expressionS *ep, | |
6270 | unsigned int sreg, unsigned int treg) | |
6271 | { | |
6272 | const char *brneg = NULL; | |
6273 | const int call = 0; | |
6274 | const char *br; | |
6275 | ||
6276 | switch (type) | |
6277 | { | |
6278 | case M_BEQ: | |
6279 | case M_BEQ_I: | |
6280 | br = "beq"; | |
6281 | break; | |
6282 | case M_BEQL: | |
6283 | case M_BEQL_I: | |
6284 | br = mips_opts.micromips ? "beq" : "beql"; | |
6285 | brneg = "bne"; | |
6286 | break; | |
6287 | case M_BNE: | |
6288 | case M_BNE_I: | |
6289 | br = "bne"; | |
6290 | break; | |
6291 | case M_BNEL: | |
6292 | case M_BNEL_I: | |
6293 | br = mips_opts.micromips ? "bne" : "bnel"; | |
6294 | brneg = "beq"; | |
6295 | break; | |
6296 | default: | |
6297 | abort (); | |
6298 | } | |
6299 | if (mips_opts.micromips && brneg) | |
6300 | macro_build_branch_likely (br, brneg, call, ep, "s,t,p", sreg, treg); | |
6301 | else | |
6302 | macro_build (ep, br, "s,t,p", sreg, treg); | |
6303 | } | |
6304 | ||
252b5132 RH |
6305 | /* |
6306 | * Build macros | |
6307 | * This routine implements the seemingly endless macro or synthesized | |
6308 | * instructions and addressing modes in the mips assembly language. Many | |
6309 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 6310 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
6311 | * this verbose method. Others are not simple macros but are more like |
6312 | * optimizing code generation. | |
6313 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 6314 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
6315 | * The ensuing load upper instructions are ommited. This implies some kind |
6316 | * of global optimization. We currently only optimize within a single macro. | |
6317 | * For many of the load and store macros if the address is specified as a | |
6318 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
6319 | * first load register 'at' with zero and use it as the base register. The | |
6320 | * mips assembler simply uses register $zero. Just one tiny optimization | |
6321 | * we're missing. | |
6322 | */ | |
6323 | static void | |
17a2f251 | 6324 | macro (struct mips_cl_insn *ip) |
252b5132 | 6325 | { |
741fe287 MR |
6326 | unsigned int treg, sreg, dreg, breg; |
6327 | unsigned int tempreg; | |
252b5132 | 6328 | int mask; |
43841e91 | 6329 | int used_at = 0; |
df58fc94 | 6330 | expressionS label_expr; |
252b5132 | 6331 | expressionS expr1; |
df58fc94 | 6332 | expressionS *ep; |
252b5132 RH |
6333 | const char *s; |
6334 | const char *s2; | |
6335 | const char *fmt; | |
6336 | int likely = 0; | |
252b5132 | 6337 | int coproc = 0; |
df58fc94 | 6338 | int off12 = 0; |
1abe91b1 | 6339 | int call = 0; |
df58fc94 RS |
6340 | int jals = 0; |
6341 | int dbl = 0; | |
6342 | int imm = 0; | |
6343 | int ust = 0; | |
6344 | int lp = 0; | |
6345 | int ab = 0; | |
dd6a37e7 | 6346 | int off0 = 0; |
252b5132 | 6347 | int off; |
67c0d1eb | 6348 | offsetT maxnum; |
252b5132 | 6349 | bfd_reloc_code_real_type r; |
252b5132 RH |
6350 | int hold_mips_optimize; |
6351 | ||
9c2799c2 | 6352 | gas_assert (! mips_opts.mips16); |
252b5132 | 6353 | |
df58fc94 RS |
6354 | treg = EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
6355 | dreg = EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); | |
6356 | sreg = breg = EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); | |
252b5132 RH |
6357 | mask = ip->insn_mo->mask; |
6358 | ||
df58fc94 RS |
6359 | label_expr.X_op = O_constant; |
6360 | label_expr.X_op_symbol = NULL; | |
6361 | label_expr.X_add_symbol = NULL; | |
6362 | label_expr.X_add_number = 0; | |
6363 | ||
252b5132 RH |
6364 | expr1.X_op = O_constant; |
6365 | expr1.X_op_symbol = NULL; | |
6366 | expr1.X_add_symbol = NULL; | |
6367 | expr1.X_add_number = 1; | |
6368 | ||
6369 | switch (mask) | |
6370 | { | |
6371 | case M_DABS: | |
6372 | dbl = 1; | |
6373 | case M_ABS: | |
df58fc94 RS |
6374 | /* bgez $a0,1f |
6375 | move v0,$a0 | |
6376 | sub v0,$zero,$a0 | |
6377 | 1: | |
6378 | */ | |
252b5132 | 6379 | |
7d10b47d | 6380 | start_noreorder (); |
252b5132 | 6381 | |
df58fc94 RS |
6382 | if (mips_opts.micromips) |
6383 | micromips_label_expr (&label_expr); | |
6384 | else | |
6385 | label_expr.X_add_number = 8; | |
6386 | macro_build (&label_expr, "bgez", "s,p", sreg); | |
252b5132 | 6387 | if (dreg == sreg) |
a605d2b3 | 6388 | macro_build (NULL, "nop", ""); |
252b5132 | 6389 | else |
67c0d1eb RS |
6390 | move_register (dreg, sreg); |
6391 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); | |
df58fc94 RS |
6392 | if (mips_opts.micromips) |
6393 | micromips_add_label (); | |
252b5132 | 6394 | |
7d10b47d | 6395 | end_noreorder (); |
8fc2e39e | 6396 | break; |
252b5132 RH |
6397 | |
6398 | case M_ADD_I: | |
6399 | s = "addi"; | |
6400 | s2 = "add"; | |
6401 | goto do_addi; | |
6402 | case M_ADDU_I: | |
6403 | s = "addiu"; | |
6404 | s2 = "addu"; | |
6405 | goto do_addi; | |
6406 | case M_DADD_I: | |
6407 | dbl = 1; | |
6408 | s = "daddi"; | |
6409 | s2 = "dadd"; | |
df58fc94 RS |
6410 | if (!mips_opts.micromips) |
6411 | goto do_addi; | |
6412 | if (imm_expr.X_op == O_constant | |
6413 | && imm_expr.X_add_number >= -0x200 | |
6414 | && imm_expr.X_add_number < 0x200) | |
6415 | { | |
6416 | macro_build (NULL, s, "t,r,.", treg, sreg, imm_expr.X_add_number); | |
6417 | break; | |
6418 | } | |
6419 | goto do_addi_i; | |
252b5132 RH |
6420 | case M_DADDU_I: |
6421 | dbl = 1; | |
6422 | s = "daddiu"; | |
6423 | s2 = "daddu"; | |
6424 | do_addi: | |
6425 | if (imm_expr.X_op == O_constant | |
6426 | && imm_expr.X_add_number >= -0x8000 | |
6427 | && imm_expr.X_add_number < 0x8000) | |
6428 | { | |
67c0d1eb | 6429 | macro_build (&imm_expr, s, "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 6430 | break; |
252b5132 | 6431 | } |
df58fc94 | 6432 | do_addi_i: |
8fc2e39e | 6433 | used_at = 1; |
67c0d1eb RS |
6434 | load_register (AT, &imm_expr, dbl); |
6435 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
6436 | break; |
6437 | ||
6438 | case M_AND_I: | |
6439 | s = "andi"; | |
6440 | s2 = "and"; | |
6441 | goto do_bit; | |
6442 | case M_OR_I: | |
6443 | s = "ori"; | |
6444 | s2 = "or"; | |
6445 | goto do_bit; | |
6446 | case M_NOR_I: | |
6447 | s = ""; | |
6448 | s2 = "nor"; | |
6449 | goto do_bit; | |
6450 | case M_XOR_I: | |
6451 | s = "xori"; | |
6452 | s2 = "xor"; | |
6453 | do_bit: | |
6454 | if (imm_expr.X_op == O_constant | |
6455 | && imm_expr.X_add_number >= 0 | |
6456 | && imm_expr.X_add_number < 0x10000) | |
6457 | { | |
6458 | if (mask != M_NOR_I) | |
67c0d1eb | 6459 | macro_build (&imm_expr, s, "t,r,i", treg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
6460 | else |
6461 | { | |
67c0d1eb RS |
6462 | macro_build (&imm_expr, "ori", "t,r,i", |
6463 | treg, sreg, BFD_RELOC_LO16); | |
6464 | macro_build (NULL, "nor", "d,v,t", treg, treg, 0); | |
252b5132 | 6465 | } |
8fc2e39e | 6466 | break; |
252b5132 RH |
6467 | } |
6468 | ||
8fc2e39e | 6469 | used_at = 1; |
67c0d1eb RS |
6470 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
6471 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
6472 | break; |
6473 | ||
8b082fb1 TS |
6474 | case M_BALIGN: |
6475 | switch (imm_expr.X_add_number) | |
6476 | { | |
6477 | case 0: | |
6478 | macro_build (NULL, "nop", ""); | |
6479 | break; | |
6480 | case 2: | |
6481 | macro_build (NULL, "packrl.ph", "d,s,t", treg, treg, sreg); | |
6482 | break; | |
03f66e8a MR |
6483 | case 1: |
6484 | case 3: | |
8b082fb1 | 6485 | macro_build (NULL, "balign", "t,s,2", treg, sreg, |
90ecf173 | 6486 | (int) imm_expr.X_add_number); |
8b082fb1 | 6487 | break; |
03f66e8a MR |
6488 | default: |
6489 | as_bad (_("BALIGN immediate not 0, 1, 2 or 3 (%lu)"), | |
6490 | (unsigned long) imm_expr.X_add_number); | |
6491 | break; | |
8b082fb1 TS |
6492 | } |
6493 | break; | |
6494 | ||
df58fc94 RS |
6495 | case M_BC1FL: |
6496 | case M_BC1TL: | |
6497 | case M_BC2FL: | |
6498 | case M_BC2TL: | |
6499 | gas_assert (mips_opts.micromips); | |
6500 | macro_build_branch_ccl (mask, &offset_expr, | |
6501 | EXTRACT_OPERAND (1, BCC, *ip)); | |
6502 | break; | |
6503 | ||
252b5132 | 6504 | case M_BEQ_I: |
252b5132 | 6505 | case M_BEQL_I: |
252b5132 | 6506 | case M_BNE_I: |
252b5132 | 6507 | case M_BNEL_I: |
252b5132 | 6508 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) |
df58fc94 RS |
6509 | treg = 0; |
6510 | else | |
252b5132 | 6511 | { |
df58fc94 RS |
6512 | treg = AT; |
6513 | used_at = 1; | |
6514 | load_register (treg, &imm_expr, HAVE_64BIT_GPRS); | |
252b5132 | 6515 | } |
df58fc94 RS |
6516 | /* Fall through. */ |
6517 | case M_BEQL: | |
6518 | case M_BNEL: | |
6519 | macro_build_branch_rsrt (mask, &offset_expr, sreg, treg); | |
252b5132 RH |
6520 | break; |
6521 | ||
6522 | case M_BGEL: | |
6523 | likely = 1; | |
6524 | case M_BGE: | |
6525 | if (treg == 0) | |
df58fc94 RS |
6526 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, sreg); |
6527 | else if (sreg == 0) | |
6528 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, treg); | |
6529 | else | |
252b5132 | 6530 | { |
df58fc94 RS |
6531 | used_at = 1; |
6532 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); | |
6533 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6534 | &offset_expr, AT, ZERO); | |
252b5132 | 6535 | } |
df58fc94 RS |
6536 | break; |
6537 | ||
6538 | case M_BGEZL: | |
6539 | case M_BGEZALL: | |
6540 | case M_BGTZL: | |
6541 | case M_BLEZL: | |
6542 | case M_BLTZL: | |
6543 | case M_BLTZALL: | |
6544 | macro_build_branch_rs (mask, &offset_expr, sreg); | |
252b5132 RH |
6545 | break; |
6546 | ||
6547 | case M_BGTL_I: | |
6548 | likely = 1; | |
6549 | case M_BGT_I: | |
90ecf173 | 6550 | /* Check for > max integer. */ |
252b5132 | 6551 | maxnum = 0x7fffffff; |
ca4e0257 | 6552 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6553 | { |
6554 | maxnum <<= 16; | |
6555 | maxnum |= 0xffff; | |
6556 | maxnum <<= 16; | |
6557 | maxnum |= 0xffff; | |
6558 | } | |
6559 | if (imm_expr.X_op == O_constant | |
6560 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 6561 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6562 | { |
6563 | do_false: | |
90ecf173 | 6564 | /* Result is always false. */ |
252b5132 | 6565 | if (! likely) |
a605d2b3 | 6566 | macro_build (NULL, "nop", ""); |
252b5132 | 6567 | else |
df58fc94 | 6568 | macro_build_branch_rsrt (M_BNEL, &offset_expr, ZERO, ZERO); |
8fc2e39e | 6569 | break; |
252b5132 RH |
6570 | } |
6571 | if (imm_expr.X_op != O_constant) | |
6572 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6573 | ++imm_expr.X_add_number; |
252b5132 RH |
6574 | /* FALLTHROUGH */ |
6575 | case M_BGE_I: | |
6576 | case M_BGEL_I: | |
6577 | if (mask == M_BGEL_I) | |
6578 | likely = 1; | |
6579 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6580 | { | |
df58fc94 RS |
6581 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, |
6582 | &offset_expr, sreg); | |
8fc2e39e | 6583 | break; |
252b5132 RH |
6584 | } |
6585 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6586 | { | |
df58fc94 RS |
6587 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, |
6588 | &offset_expr, sreg); | |
8fc2e39e | 6589 | break; |
252b5132 RH |
6590 | } |
6591 | maxnum = 0x7fffffff; | |
ca4e0257 | 6592 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6593 | { |
6594 | maxnum <<= 16; | |
6595 | maxnum |= 0xffff; | |
6596 | maxnum <<= 16; | |
6597 | maxnum |= 0xffff; | |
6598 | } | |
6599 | maxnum = - maxnum - 1; | |
6600 | if (imm_expr.X_op == O_constant | |
6601 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 6602 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6603 | { |
6604 | do_true: | |
6605 | /* result is always true */ | |
6606 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
67c0d1eb | 6607 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 6608 | break; |
252b5132 | 6609 | } |
8fc2e39e | 6610 | used_at = 1; |
67c0d1eb | 6611 | set_at (sreg, 0); |
df58fc94 RS |
6612 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
6613 | &offset_expr, AT, ZERO); | |
252b5132 RH |
6614 | break; |
6615 | ||
6616 | case M_BGEUL: | |
6617 | likely = 1; | |
6618 | case M_BGEU: | |
6619 | if (treg == 0) | |
6620 | goto do_true; | |
df58fc94 RS |
6621 | else if (sreg == 0) |
6622 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6623 | &offset_expr, ZERO, treg); | |
6624 | else | |
252b5132 | 6625 | { |
df58fc94 RS |
6626 | used_at = 1; |
6627 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); | |
6628 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6629 | &offset_expr, AT, ZERO); | |
252b5132 | 6630 | } |
252b5132 RH |
6631 | break; |
6632 | ||
6633 | case M_BGTUL_I: | |
6634 | likely = 1; | |
6635 | case M_BGTU_I: | |
6636 | if (sreg == 0 | |
ca4e0257 | 6637 | || (HAVE_32BIT_GPRS |
252b5132 | 6638 | && imm_expr.X_op == O_constant |
f01dc953 | 6639 | && imm_expr.X_add_number == -1)) |
252b5132 RH |
6640 | goto do_false; |
6641 | if (imm_expr.X_op != O_constant) | |
6642 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6643 | ++imm_expr.X_add_number; |
252b5132 RH |
6644 | /* FALLTHROUGH */ |
6645 | case M_BGEU_I: | |
6646 | case M_BGEUL_I: | |
6647 | if (mask == M_BGEUL_I) | |
6648 | likely = 1; | |
6649 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6650 | goto do_true; | |
df58fc94 RS |
6651 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) |
6652 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6653 | &offset_expr, sreg, ZERO); | |
6654 | else | |
252b5132 | 6655 | { |
df58fc94 RS |
6656 | used_at = 1; |
6657 | set_at (sreg, 1); | |
6658 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6659 | &offset_expr, AT, ZERO); | |
252b5132 | 6660 | } |
252b5132 RH |
6661 | break; |
6662 | ||
6663 | case M_BGTL: | |
6664 | likely = 1; | |
6665 | case M_BGT: | |
6666 | if (treg == 0) | |
df58fc94 RS |
6667 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, sreg); |
6668 | else if (sreg == 0) | |
6669 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, treg); | |
6670 | else | |
252b5132 | 6671 | { |
df58fc94 RS |
6672 | used_at = 1; |
6673 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); | |
6674 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6675 | &offset_expr, AT, ZERO); | |
252b5132 | 6676 | } |
252b5132 RH |
6677 | break; |
6678 | ||
6679 | case M_BGTUL: | |
6680 | likely = 1; | |
6681 | case M_BGTU: | |
6682 | if (treg == 0) | |
df58fc94 RS |
6683 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
6684 | &offset_expr, sreg, ZERO); | |
6685 | else if (sreg == 0) | |
6686 | goto do_false; | |
6687 | else | |
252b5132 | 6688 | { |
df58fc94 RS |
6689 | used_at = 1; |
6690 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); | |
6691 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6692 | &offset_expr, AT, ZERO); | |
252b5132 | 6693 | } |
252b5132 RH |
6694 | break; |
6695 | ||
6696 | case M_BLEL: | |
6697 | likely = 1; | |
6698 | case M_BLE: | |
6699 | if (treg == 0) | |
df58fc94 RS |
6700 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, sreg); |
6701 | else if (sreg == 0) | |
6702 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, treg); | |
6703 | else | |
252b5132 | 6704 | { |
df58fc94 RS |
6705 | used_at = 1; |
6706 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); | |
6707 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6708 | &offset_expr, AT, ZERO); | |
252b5132 | 6709 | } |
252b5132 RH |
6710 | break; |
6711 | ||
6712 | case M_BLEL_I: | |
6713 | likely = 1; | |
6714 | case M_BLE_I: | |
6715 | maxnum = 0x7fffffff; | |
ca4e0257 | 6716 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6717 | { |
6718 | maxnum <<= 16; | |
6719 | maxnum |= 0xffff; | |
6720 | maxnum <<= 16; | |
6721 | maxnum |= 0xffff; | |
6722 | } | |
6723 | if (imm_expr.X_op == O_constant | |
6724 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 6725 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6726 | goto do_true; |
6727 | if (imm_expr.X_op != O_constant) | |
6728 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6729 | ++imm_expr.X_add_number; |
252b5132 RH |
6730 | /* FALLTHROUGH */ |
6731 | case M_BLT_I: | |
6732 | case M_BLTL_I: | |
6733 | if (mask == M_BLTL_I) | |
6734 | likely = 1; | |
6735 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
df58fc94 RS |
6736 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, sreg); |
6737 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6738 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, sreg); | |
6739 | else | |
252b5132 | 6740 | { |
df58fc94 RS |
6741 | used_at = 1; |
6742 | set_at (sreg, 0); | |
6743 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6744 | &offset_expr, AT, ZERO); | |
252b5132 | 6745 | } |
252b5132 RH |
6746 | break; |
6747 | ||
6748 | case M_BLEUL: | |
6749 | likely = 1; | |
6750 | case M_BLEU: | |
6751 | if (treg == 0) | |
df58fc94 RS |
6752 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
6753 | &offset_expr, sreg, ZERO); | |
6754 | else if (sreg == 0) | |
6755 | goto do_true; | |
6756 | else | |
252b5132 | 6757 | { |
df58fc94 RS |
6758 | used_at = 1; |
6759 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); | |
6760 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6761 | &offset_expr, AT, ZERO); | |
252b5132 | 6762 | } |
252b5132 RH |
6763 | break; |
6764 | ||
6765 | case M_BLEUL_I: | |
6766 | likely = 1; | |
6767 | case M_BLEU_I: | |
6768 | if (sreg == 0 | |
ca4e0257 | 6769 | || (HAVE_32BIT_GPRS |
252b5132 | 6770 | && imm_expr.X_op == O_constant |
f01dc953 | 6771 | && imm_expr.X_add_number == -1)) |
252b5132 RH |
6772 | goto do_true; |
6773 | if (imm_expr.X_op != O_constant) | |
6774 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6775 | ++imm_expr.X_add_number; |
252b5132 RH |
6776 | /* FALLTHROUGH */ |
6777 | case M_BLTU_I: | |
6778 | case M_BLTUL_I: | |
6779 | if (mask == M_BLTUL_I) | |
6780 | likely = 1; | |
6781 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6782 | goto do_false; | |
df58fc94 RS |
6783 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) |
6784 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6785 | &offset_expr, sreg, ZERO); | |
6786 | else | |
252b5132 | 6787 | { |
df58fc94 RS |
6788 | used_at = 1; |
6789 | set_at (sreg, 1); | |
6790 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6791 | &offset_expr, AT, ZERO); | |
252b5132 | 6792 | } |
252b5132 RH |
6793 | break; |
6794 | ||
6795 | case M_BLTL: | |
6796 | likely = 1; | |
6797 | case M_BLT: | |
6798 | if (treg == 0) | |
df58fc94 RS |
6799 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, sreg); |
6800 | else if (sreg == 0) | |
6801 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, treg); | |
6802 | else | |
252b5132 | 6803 | { |
df58fc94 RS |
6804 | used_at = 1; |
6805 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); | |
6806 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6807 | &offset_expr, AT, ZERO); | |
252b5132 | 6808 | } |
252b5132 RH |
6809 | break; |
6810 | ||
6811 | case M_BLTUL: | |
6812 | likely = 1; | |
6813 | case M_BLTU: | |
6814 | if (treg == 0) | |
6815 | goto do_false; | |
df58fc94 RS |
6816 | else if (sreg == 0) |
6817 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6818 | &offset_expr, ZERO, treg); | |
6819 | else | |
252b5132 | 6820 | { |
df58fc94 RS |
6821 | used_at = 1; |
6822 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); | |
6823 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6824 | &offset_expr, AT, ZERO); | |
252b5132 | 6825 | } |
252b5132 RH |
6826 | break; |
6827 | ||
5f74bc13 CD |
6828 | case M_DEXT: |
6829 | { | |
d5818fca MR |
6830 | /* Use unsigned arithmetic. */ |
6831 | addressT pos; | |
6832 | addressT size; | |
5f74bc13 | 6833 | |
90ecf173 | 6834 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) |
5f74bc13 CD |
6835 | { |
6836 | as_bad (_("Unsupported large constant")); | |
6837 | pos = size = 1; | |
6838 | } | |
6839 | else | |
6840 | { | |
d5818fca MR |
6841 | pos = imm_expr.X_add_number; |
6842 | size = imm2_expr.X_add_number; | |
5f74bc13 CD |
6843 | } |
6844 | ||
6845 | if (pos > 63) | |
6846 | { | |
d5818fca | 6847 | as_bad (_("Improper position (%lu)"), (unsigned long) pos); |
5f74bc13 CD |
6848 | pos = 1; |
6849 | } | |
90ecf173 | 6850 | if (size == 0 || size > 64 || (pos + size - 1) > 63) |
5f74bc13 CD |
6851 | { |
6852 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
d5818fca | 6853 | (unsigned long) size, (unsigned long) pos); |
5f74bc13 CD |
6854 | size = 1; |
6855 | } | |
6856 | ||
6857 | if (size <= 32 && pos < 32) | |
6858 | { | |
6859 | s = "dext"; | |
6860 | fmt = "t,r,+A,+C"; | |
6861 | } | |
6862 | else if (size <= 32) | |
6863 | { | |
6864 | s = "dextu"; | |
6865 | fmt = "t,r,+E,+H"; | |
6866 | } | |
6867 | else | |
6868 | { | |
6869 | s = "dextm"; | |
6870 | fmt = "t,r,+A,+G"; | |
6871 | } | |
d5818fca MR |
6872 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, (int) pos, |
6873 | (int) (size - 1)); | |
5f74bc13 | 6874 | } |
8fc2e39e | 6875 | break; |
5f74bc13 CD |
6876 | |
6877 | case M_DINS: | |
6878 | { | |
d5818fca MR |
6879 | /* Use unsigned arithmetic. */ |
6880 | addressT pos; | |
6881 | addressT size; | |
5f74bc13 | 6882 | |
90ecf173 | 6883 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) |
5f74bc13 CD |
6884 | { |
6885 | as_bad (_("Unsupported large constant")); | |
6886 | pos = size = 1; | |
6887 | } | |
6888 | else | |
6889 | { | |
d5818fca MR |
6890 | pos = imm_expr.X_add_number; |
6891 | size = imm2_expr.X_add_number; | |
5f74bc13 CD |
6892 | } |
6893 | ||
6894 | if (pos > 63) | |
6895 | { | |
d5818fca | 6896 | as_bad (_("Improper position (%lu)"), (unsigned long) pos); |
5f74bc13 CD |
6897 | pos = 1; |
6898 | } | |
90ecf173 | 6899 | if (size == 0 || size > 64 || (pos + size - 1) > 63) |
5f74bc13 CD |
6900 | { |
6901 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
d5818fca | 6902 | (unsigned long) size, (unsigned long) pos); |
5f74bc13 CD |
6903 | size = 1; |
6904 | } | |
6905 | ||
6906 | if (pos < 32 && (pos + size - 1) < 32) | |
6907 | { | |
6908 | s = "dins"; | |
6909 | fmt = "t,r,+A,+B"; | |
6910 | } | |
6911 | else if (pos >= 32) | |
6912 | { | |
6913 | s = "dinsu"; | |
6914 | fmt = "t,r,+E,+F"; | |
6915 | } | |
6916 | else | |
6917 | { | |
6918 | s = "dinsm"; | |
6919 | fmt = "t,r,+A,+F"; | |
6920 | } | |
750bdd57 AS |
6921 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, (int) pos, |
6922 | (int) (pos + size - 1)); | |
5f74bc13 | 6923 | } |
8fc2e39e | 6924 | break; |
5f74bc13 | 6925 | |
252b5132 RH |
6926 | case M_DDIV_3: |
6927 | dbl = 1; | |
6928 | case M_DIV_3: | |
6929 | s = "mflo"; | |
6930 | goto do_div3; | |
6931 | case M_DREM_3: | |
6932 | dbl = 1; | |
6933 | case M_REM_3: | |
6934 | s = "mfhi"; | |
6935 | do_div3: | |
6936 | if (treg == 0) | |
6937 | { | |
6938 | as_warn (_("Divide by zero.")); | |
6939 | if (mips_trap) | |
df58fc94 | 6940 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 6941 | else |
df58fc94 | 6942 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 6943 | break; |
252b5132 RH |
6944 | } |
6945 | ||
7d10b47d | 6946 | start_noreorder (); |
252b5132 RH |
6947 | if (mips_trap) |
6948 | { | |
df58fc94 | 6949 | macro_build (NULL, "teq", TRAP_FMT, treg, ZERO, 7); |
67c0d1eb | 6950 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
252b5132 RH |
6951 | } |
6952 | else | |
6953 | { | |
df58fc94 RS |
6954 | if (mips_opts.micromips) |
6955 | micromips_label_expr (&label_expr); | |
6956 | else | |
6957 | label_expr.X_add_number = 8; | |
6958 | macro_build (&label_expr, "bne", "s,t,p", treg, ZERO); | |
67c0d1eb | 6959 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
df58fc94 RS |
6960 | macro_build (NULL, "break", BRK_FMT, 7); |
6961 | if (mips_opts.micromips) | |
6962 | micromips_add_label (); | |
252b5132 RH |
6963 | } |
6964 | expr1.X_add_number = -1; | |
8fc2e39e | 6965 | used_at = 1; |
f6a22291 | 6966 | load_register (AT, &expr1, dbl); |
df58fc94 RS |
6967 | if (mips_opts.micromips) |
6968 | micromips_label_expr (&label_expr); | |
6969 | else | |
6970 | label_expr.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); | |
6971 | macro_build (&label_expr, "bne", "s,t,p", treg, AT); | |
252b5132 RH |
6972 | if (dbl) |
6973 | { | |
6974 | expr1.X_add_number = 1; | |
f6a22291 | 6975 | load_register (AT, &expr1, dbl); |
df58fc94 | 6976 | macro_build (NULL, "dsll32", SHFT_FMT, AT, AT, 31); |
252b5132 RH |
6977 | } |
6978 | else | |
6979 | { | |
6980 | expr1.X_add_number = 0x80000000; | |
df58fc94 | 6981 | macro_build (&expr1, "lui", LUI_FMT, AT, BFD_RELOC_HI16); |
252b5132 RH |
6982 | } |
6983 | if (mips_trap) | |
6984 | { | |
df58fc94 | 6985 | macro_build (NULL, "teq", TRAP_FMT, sreg, AT, 6); |
252b5132 RH |
6986 | /* We want to close the noreorder block as soon as possible, so |
6987 | that later insns are available for delay slot filling. */ | |
7d10b47d | 6988 | end_noreorder (); |
252b5132 RH |
6989 | } |
6990 | else | |
6991 | { | |
df58fc94 RS |
6992 | if (mips_opts.micromips) |
6993 | micromips_label_expr (&label_expr); | |
6994 | else | |
6995 | label_expr.X_add_number = 8; | |
6996 | macro_build (&label_expr, "bne", "s,t,p", sreg, AT); | |
a605d2b3 | 6997 | macro_build (NULL, "nop", ""); |
252b5132 RH |
6998 | |
6999 | /* We want to close the noreorder block as soon as possible, so | |
7000 | that later insns are available for delay slot filling. */ | |
7d10b47d | 7001 | end_noreorder (); |
252b5132 | 7002 | |
df58fc94 | 7003 | macro_build (NULL, "break", BRK_FMT, 6); |
252b5132 | 7004 | } |
df58fc94 RS |
7005 | if (mips_opts.micromips) |
7006 | micromips_add_label (); | |
7007 | macro_build (NULL, s, MFHL_FMT, dreg); | |
252b5132 RH |
7008 | break; |
7009 | ||
7010 | case M_DIV_3I: | |
7011 | s = "div"; | |
7012 | s2 = "mflo"; | |
7013 | goto do_divi; | |
7014 | case M_DIVU_3I: | |
7015 | s = "divu"; | |
7016 | s2 = "mflo"; | |
7017 | goto do_divi; | |
7018 | case M_REM_3I: | |
7019 | s = "div"; | |
7020 | s2 = "mfhi"; | |
7021 | goto do_divi; | |
7022 | case M_REMU_3I: | |
7023 | s = "divu"; | |
7024 | s2 = "mfhi"; | |
7025 | goto do_divi; | |
7026 | case M_DDIV_3I: | |
7027 | dbl = 1; | |
7028 | s = "ddiv"; | |
7029 | s2 = "mflo"; | |
7030 | goto do_divi; | |
7031 | case M_DDIVU_3I: | |
7032 | dbl = 1; | |
7033 | s = "ddivu"; | |
7034 | s2 = "mflo"; | |
7035 | goto do_divi; | |
7036 | case M_DREM_3I: | |
7037 | dbl = 1; | |
7038 | s = "ddiv"; | |
7039 | s2 = "mfhi"; | |
7040 | goto do_divi; | |
7041 | case M_DREMU_3I: | |
7042 | dbl = 1; | |
7043 | s = "ddivu"; | |
7044 | s2 = "mfhi"; | |
7045 | do_divi: | |
7046 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7047 | { | |
7048 | as_warn (_("Divide by zero.")); | |
7049 | if (mips_trap) | |
df58fc94 | 7050 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 7051 | else |
df58fc94 | 7052 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 7053 | break; |
252b5132 RH |
7054 | } |
7055 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
7056 | { | |
7057 | if (strcmp (s2, "mflo") == 0) | |
67c0d1eb | 7058 | move_register (dreg, sreg); |
252b5132 | 7059 | else |
c80c840e | 7060 | move_register (dreg, ZERO); |
8fc2e39e | 7061 | break; |
252b5132 RH |
7062 | } |
7063 | if (imm_expr.X_op == O_constant | |
7064 | && imm_expr.X_add_number == -1 | |
7065 | && s[strlen (s) - 1] != 'u') | |
7066 | { | |
7067 | if (strcmp (s2, "mflo") == 0) | |
7068 | { | |
67c0d1eb | 7069 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", dreg, sreg); |
252b5132 RH |
7070 | } |
7071 | else | |
c80c840e | 7072 | move_register (dreg, ZERO); |
8fc2e39e | 7073 | break; |
252b5132 RH |
7074 | } |
7075 | ||
8fc2e39e | 7076 | used_at = 1; |
67c0d1eb RS |
7077 | load_register (AT, &imm_expr, dbl); |
7078 | macro_build (NULL, s, "z,s,t", sreg, AT); | |
df58fc94 | 7079 | macro_build (NULL, s2, MFHL_FMT, dreg); |
252b5132 RH |
7080 | break; |
7081 | ||
7082 | case M_DIVU_3: | |
7083 | s = "divu"; | |
7084 | s2 = "mflo"; | |
7085 | goto do_divu3; | |
7086 | case M_REMU_3: | |
7087 | s = "divu"; | |
7088 | s2 = "mfhi"; | |
7089 | goto do_divu3; | |
7090 | case M_DDIVU_3: | |
7091 | s = "ddivu"; | |
7092 | s2 = "mflo"; | |
7093 | goto do_divu3; | |
7094 | case M_DREMU_3: | |
7095 | s = "ddivu"; | |
7096 | s2 = "mfhi"; | |
7097 | do_divu3: | |
7d10b47d | 7098 | start_noreorder (); |
252b5132 RH |
7099 | if (mips_trap) |
7100 | { | |
df58fc94 | 7101 | macro_build (NULL, "teq", TRAP_FMT, treg, ZERO, 7); |
67c0d1eb | 7102 | macro_build (NULL, s, "z,s,t", sreg, treg); |
252b5132 RH |
7103 | /* We want to close the noreorder block as soon as possible, so |
7104 | that later insns are available for delay slot filling. */ | |
7d10b47d | 7105 | end_noreorder (); |
252b5132 RH |
7106 | } |
7107 | else | |
7108 | { | |
df58fc94 RS |
7109 | if (mips_opts.micromips) |
7110 | micromips_label_expr (&label_expr); | |
7111 | else | |
7112 | label_expr.X_add_number = 8; | |
7113 | macro_build (&label_expr, "bne", "s,t,p", treg, ZERO); | |
67c0d1eb | 7114 | macro_build (NULL, s, "z,s,t", sreg, treg); |
252b5132 RH |
7115 | |
7116 | /* We want to close the noreorder block as soon as possible, so | |
7117 | that later insns are available for delay slot filling. */ | |
7d10b47d | 7118 | end_noreorder (); |
df58fc94 RS |
7119 | macro_build (NULL, "break", BRK_FMT, 7); |
7120 | if (mips_opts.micromips) | |
7121 | micromips_add_label (); | |
252b5132 | 7122 | } |
df58fc94 | 7123 | macro_build (NULL, s2, MFHL_FMT, dreg); |
8fc2e39e | 7124 | break; |
252b5132 | 7125 | |
1abe91b1 MR |
7126 | case M_DLCA_AB: |
7127 | dbl = 1; | |
7128 | case M_LCA_AB: | |
7129 | call = 1; | |
7130 | goto do_la; | |
252b5132 RH |
7131 | case M_DLA_AB: |
7132 | dbl = 1; | |
7133 | case M_LA_AB: | |
1abe91b1 | 7134 | do_la: |
252b5132 RH |
7135 | /* Load the address of a symbol into a register. If breg is not |
7136 | zero, we then add a base register to it. */ | |
7137 | ||
3bec30a8 TS |
7138 | if (dbl && HAVE_32BIT_GPRS) |
7139 | as_warn (_("dla used to load 32-bit register")); | |
7140 | ||
90ecf173 | 7141 | if (!dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
7142 | as_warn (_("la used to load 64-bit address")); |
7143 | ||
0c11417f MR |
7144 | if (offset_expr.X_op == O_constant |
7145 | && offset_expr.X_add_number >= -0x8000 | |
7146 | && offset_expr.X_add_number < 0x8000) | |
7147 | { | |
aed1a261 | 7148 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
17a2f251 | 7149 | "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7150 | break; |
0c11417f MR |
7151 | } |
7152 | ||
741fe287 | 7153 | if (mips_opts.at && (treg == breg)) |
afdbd6d0 CD |
7154 | { |
7155 | tempreg = AT; | |
7156 | used_at = 1; | |
7157 | } | |
7158 | else | |
7159 | { | |
7160 | tempreg = treg; | |
afdbd6d0 CD |
7161 | } |
7162 | ||
252b5132 RH |
7163 | if (offset_expr.X_op != O_symbol |
7164 | && offset_expr.X_op != O_constant) | |
7165 | { | |
f71d0d44 | 7166 | as_bad (_("Expression too complex")); |
252b5132 RH |
7167 | offset_expr.X_op = O_constant; |
7168 | } | |
7169 | ||
252b5132 | 7170 | if (offset_expr.X_op == O_constant) |
aed1a261 | 7171 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
7172 | else if (mips_pic == NO_PIC) |
7173 | { | |
d6bc6245 | 7174 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 7175 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
7176 | Otherwise we want |
7177 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
7178 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7179 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 7180 | so we may as well always use the latter form. |
76b3015f | 7181 | |
6caf9ef4 TS |
7182 | With 64bit address space and a usable $at we want |
7183 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
7184 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
7185 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
7186 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
7187 | dsll32 $tempreg,0 | |
7188 | daddu $tempreg,$tempreg,$at | |
7189 | ||
7190 | If $at is already in use, we use a path which is suboptimal | |
7191 | on superscalar processors. | |
7192 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
7193 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
7194 | dsll $tempreg,16 | |
7195 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
7196 | dsll $tempreg,16 | |
7197 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
7198 | ||
7199 | For GP relative symbols in 64bit address space we can use | |
7200 | the same sequence as in 32bit address space. */ | |
aed1a261 | 7201 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 7202 | { |
6caf9ef4 TS |
7203 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
7204 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
7205 | { | |
7206 | relax_start (offset_expr.X_add_symbol); | |
7207 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7208 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
7209 | relax_switch (); | |
7210 | } | |
d6bc6245 | 7211 | |
741fe287 | 7212 | if (used_at == 0 && mips_opts.at) |
98d3f06f | 7213 | { |
df58fc94 | 7214 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7215 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 7216 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7217 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 7218 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7219 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 7220 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7221 | AT, AT, BFD_RELOC_LO16); |
df58fc94 | 7222 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb | 7223 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
98d3f06f KH |
7224 | used_at = 1; |
7225 | } | |
7226 | else | |
7227 | { | |
df58fc94 | 7228 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7229 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 7230 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7231 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
df58fc94 | 7232 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 7233 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7234 | tempreg, tempreg, BFD_RELOC_HI16_S); |
df58fc94 | 7235 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 7236 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7237 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 7238 | } |
6caf9ef4 TS |
7239 | |
7240 | if (mips_relax.sequence) | |
7241 | relax_end (); | |
98d3f06f KH |
7242 | } |
7243 | else | |
7244 | { | |
7245 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 7246 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 7247 | { |
4d7206a2 | 7248 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7249 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7250 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 7251 | relax_switch (); |
98d3f06f | 7252 | } |
6943caf0 | 7253 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
f71d0d44 | 7254 | as_bad (_("Offset too large")); |
67c0d1eb RS |
7255 | macro_build_lui (&offset_expr, tempreg); |
7256 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7257 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
7258 | if (mips_relax.sequence) |
7259 | relax_end (); | |
98d3f06f | 7260 | } |
252b5132 | 7261 | } |
0a44bf69 | 7262 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 7263 | { |
9117d219 NC |
7264 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
7265 | ||
252b5132 RH |
7266 | /* If this is a reference to an external symbol, and there |
7267 | is no constant, we want | |
7268 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 7269 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 7270 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
7271 | For a local symbol, we want |
7272 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7273 | nop | |
7274 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7275 | ||
7276 | If we have a small constant, and this is a reference to | |
7277 | an external symbol, we want | |
7278 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7279 | nop | |
7280 | addiu $tempreg,$tempreg,<constant> | |
7281 | For a local symbol, we want the same instruction | |
7282 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
7283 | addiu instruction. | |
7284 | ||
7285 | If we have a large constant, and this is a reference to | |
7286 | an external symbol, we want | |
7287 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7288 | lui $at,<hiconstant> | |
7289 | addiu $at,$at,<loconstant> | |
7290 | addu $tempreg,$tempreg,$at | |
7291 | For a local symbol, we want the same instruction | |
7292 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 7293 | addiu instruction. |
ed6fb7bd SC |
7294 | */ |
7295 | ||
4d7206a2 | 7296 | if (offset_expr.X_add_number == 0) |
252b5132 | 7297 | { |
0a44bf69 RS |
7298 | if (mips_pic == SVR4_PIC |
7299 | && breg == 0 | |
7300 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
7301 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
7302 | ||
7303 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
7304 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7305 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 7306 | if (breg != 0) |
252b5132 RH |
7307 | { |
7308 | /* We're going to put in an addu instruction using | |
7309 | tempreg, so we may as well insert the nop right | |
7310 | now. */ | |
269137b2 | 7311 | load_delay_nop (); |
252b5132 | 7312 | } |
4d7206a2 | 7313 | relax_switch (); |
67c0d1eb RS |
7314 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7315 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 7316 | load_delay_nop (); |
67c0d1eb RS |
7317 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7318 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 7319 | relax_end (); |
252b5132 RH |
7320 | /* FIXME: If breg == 0, and the next instruction uses |
7321 | $tempreg, then if this variant case is used an extra | |
7322 | nop will be generated. */ | |
7323 | } | |
4d7206a2 RS |
7324 | else if (offset_expr.X_add_number >= -0x8000 |
7325 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 7326 | { |
67c0d1eb | 7327 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 7328 | load_delay_nop (); |
67c0d1eb | 7329 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
7330 | } |
7331 | else | |
7332 | { | |
4d7206a2 RS |
7333 | expr1.X_add_number = offset_expr.X_add_number; |
7334 | offset_expr.X_add_number = | |
43c0598f | 7335 | SEXT_16BIT (offset_expr.X_add_number); |
67c0d1eb | 7336 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 7337 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
7338 | /* If we are going to add in a base register, and the |
7339 | target register and the base register are the same, | |
7340 | then we are using AT as a temporary register. Since | |
7341 | we want to load the constant into AT, we add our | |
7342 | current AT (from the global offset table) and the | |
7343 | register into the register now, and pretend we were | |
7344 | not using a base register. */ | |
67c0d1eb | 7345 | if (breg == treg) |
252b5132 | 7346 | { |
269137b2 | 7347 | load_delay_nop (); |
67c0d1eb | 7348 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7349 | treg, AT, breg); |
252b5132 RH |
7350 | breg = 0; |
7351 | tempreg = treg; | |
252b5132 | 7352 | } |
f6a22291 | 7353 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
7354 | used_at = 1; |
7355 | } | |
7356 | } | |
0a44bf69 | 7357 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 7358 | { |
67c0d1eb | 7359 | int add_breg_early = 0; |
f5040a92 AO |
7360 | |
7361 | /* If this is a reference to an external, and there is no | |
7362 | constant, or local symbol (*), with or without a | |
7363 | constant, we want | |
7364 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 7365 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
7366 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
7367 | ||
7368 | If we have a small constant, and this is a reference to | |
7369 | an external symbol, we want | |
7370 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
7371 | addiu $tempreg,$tempreg,<constant> | |
7372 | ||
7373 | If we have a large constant, and this is a reference to | |
7374 | an external symbol, we want | |
7375 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
7376 | lui $at,<hiconstant> | |
7377 | addiu $at,$at,<loconstant> | |
7378 | addu $tempreg,$tempreg,$at | |
7379 | ||
7380 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
7381 | local symbols, even though it introduces an additional | |
7382 | instruction. */ | |
7383 | ||
f5040a92 AO |
7384 | if (offset_expr.X_add_number) |
7385 | { | |
4d7206a2 | 7386 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
7387 | offset_expr.X_add_number = 0; |
7388 | ||
4d7206a2 | 7389 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7390 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7391 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
7392 | |
7393 | if (expr1.X_add_number >= -0x8000 | |
7394 | && expr1.X_add_number < 0x8000) | |
7395 | { | |
67c0d1eb RS |
7396 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
7397 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 7398 | } |
ecd13cd3 | 7399 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 7400 | { |
f5040a92 AO |
7401 | /* If we are going to add in a base register, and the |
7402 | target register and the base register are the same, | |
7403 | then we are using AT as a temporary register. Since | |
7404 | we want to load the constant into AT, we add our | |
7405 | current AT (from the global offset table) and the | |
7406 | register into the register now, and pretend we were | |
7407 | not using a base register. */ | |
7408 | if (breg != treg) | |
7409 | dreg = tempreg; | |
7410 | else | |
7411 | { | |
9c2799c2 | 7412 | gas_assert (tempreg == AT); |
67c0d1eb RS |
7413 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
7414 | treg, AT, breg); | |
f5040a92 | 7415 | dreg = treg; |
67c0d1eb | 7416 | add_breg_early = 1; |
f5040a92 AO |
7417 | } |
7418 | ||
f6a22291 | 7419 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7420 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7421 | dreg, dreg, AT); |
f5040a92 | 7422 | |
f5040a92 AO |
7423 | used_at = 1; |
7424 | } | |
7425 | else | |
7426 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
7427 | ||
4d7206a2 | 7428 | relax_switch (); |
f5040a92 AO |
7429 | offset_expr.X_add_number = expr1.X_add_number; |
7430 | ||
67c0d1eb RS |
7431 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7432 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
7433 | if (add_breg_early) | |
f5040a92 | 7434 | { |
67c0d1eb | 7435 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
f899b4b8 | 7436 | treg, tempreg, breg); |
f5040a92 AO |
7437 | breg = 0; |
7438 | tempreg = treg; | |
7439 | } | |
4d7206a2 | 7440 | relax_end (); |
f5040a92 | 7441 | } |
4d7206a2 | 7442 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 7443 | { |
4d7206a2 | 7444 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7445 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7446 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 7447 | relax_switch (); |
67c0d1eb RS |
7448 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7449 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 7450 | relax_end (); |
f5040a92 | 7451 | } |
4d7206a2 | 7452 | else |
f5040a92 | 7453 | { |
67c0d1eb RS |
7454 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7455 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
7456 | } |
7457 | } | |
0a44bf69 | 7458 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 7459 | { |
67c0d1eb | 7460 | int gpdelay; |
9117d219 NC |
7461 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
7462 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 7463 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
7464 | |
7465 | /* This is the large GOT case. If this is a reference to an | |
7466 | external symbol, and there is no constant, we want | |
7467 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7468 | addu $tempreg,$tempreg,$gp | |
7469 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 7470 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
7471 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
7472 | addu $tempreg,$tempreg,$gp | |
7473 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
7474 | For a local symbol, we want |
7475 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7476 | nop | |
7477 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7478 | ||
7479 | If we have a small constant, and this is a reference to | |
7480 | an external symbol, we want | |
7481 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7482 | addu $tempreg,$tempreg,$gp | |
7483 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7484 | nop | |
7485 | addiu $tempreg,$tempreg,<constant> | |
7486 | For a local symbol, we want | |
7487 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7488 | nop | |
7489 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
7490 | ||
7491 | If we have a large constant, and this is a reference to | |
7492 | an external symbol, we want | |
7493 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7494 | addu $tempreg,$tempreg,$gp | |
7495 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7496 | lui $at,<hiconstant> | |
7497 | addiu $at,$at,<loconstant> | |
7498 | addu $tempreg,$tempreg,$at | |
7499 | For a local symbol, we want | |
7500 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7501 | lui $at,<hiconstant> | |
7502 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
7503 | addu $tempreg,$tempreg,$at | |
f5040a92 | 7504 | */ |
438c16b8 | 7505 | |
252b5132 RH |
7506 | expr1.X_add_number = offset_expr.X_add_number; |
7507 | offset_expr.X_add_number = 0; | |
4d7206a2 | 7508 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 7509 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
7510 | if (expr1.X_add_number == 0 && breg == 0 |
7511 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
7512 | { |
7513 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
7514 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
7515 | } | |
df58fc94 | 7516 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 7517 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7518 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 7519 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 7520 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
7521 | if (expr1.X_add_number == 0) |
7522 | { | |
67c0d1eb | 7523 | if (breg != 0) |
252b5132 RH |
7524 | { |
7525 | /* We're going to put in an addu instruction using | |
7526 | tempreg, so we may as well insert the nop right | |
7527 | now. */ | |
269137b2 | 7528 | load_delay_nop (); |
252b5132 | 7529 | } |
252b5132 RH |
7530 | } |
7531 | else if (expr1.X_add_number >= -0x8000 | |
7532 | && expr1.X_add_number < 0x8000) | |
7533 | { | |
269137b2 | 7534 | load_delay_nop (); |
67c0d1eb | 7535 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 7536 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
7537 | } |
7538 | else | |
7539 | { | |
252b5132 RH |
7540 | /* If we are going to add in a base register, and the |
7541 | target register and the base register are the same, | |
7542 | then we are using AT as a temporary register. Since | |
7543 | we want to load the constant into AT, we add our | |
7544 | current AT (from the global offset table) and the | |
7545 | register into the register now, and pretend we were | |
7546 | not using a base register. */ | |
7547 | if (breg != treg) | |
67c0d1eb | 7548 | dreg = tempreg; |
252b5132 RH |
7549 | else |
7550 | { | |
9c2799c2 | 7551 | gas_assert (tempreg == AT); |
269137b2 | 7552 | load_delay_nop (); |
67c0d1eb | 7553 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7554 | treg, AT, breg); |
252b5132 | 7555 | dreg = treg; |
252b5132 RH |
7556 | } |
7557 | ||
f6a22291 | 7558 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7559 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 7560 | |
252b5132 RH |
7561 | used_at = 1; |
7562 | } | |
43c0598f | 7563 | offset_expr.X_add_number = SEXT_16BIT (expr1.X_add_number); |
4d7206a2 | 7564 | relax_switch (); |
252b5132 | 7565 | |
67c0d1eb | 7566 | if (gpdelay) |
252b5132 RH |
7567 | { |
7568 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 7569 | the first instruction on the main stream does not. */ |
67c0d1eb | 7570 | macro_build (NULL, "nop", ""); |
252b5132 | 7571 | } |
ed6fb7bd | 7572 | |
67c0d1eb RS |
7573 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7574 | local_reloc_type, mips_gp_register); | |
f5040a92 | 7575 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
7576 | && expr1.X_add_number < 0x8000) |
7577 | { | |
269137b2 | 7578 | load_delay_nop (); |
67c0d1eb RS |
7579 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7580 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 7581 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
7582 | register, the external symbol case ended with a load, |
7583 | so if the symbol turns out to not be external, and | |
7584 | the next instruction uses tempreg, an unnecessary nop | |
7585 | will be inserted. */ | |
252b5132 RH |
7586 | } |
7587 | else | |
7588 | { | |
7589 | if (breg == treg) | |
7590 | { | |
7591 | /* We must add in the base register now, as in the | |
f5040a92 | 7592 | external symbol case. */ |
9c2799c2 | 7593 | gas_assert (tempreg == AT); |
269137b2 | 7594 | load_delay_nop (); |
67c0d1eb | 7595 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7596 | treg, AT, breg); |
252b5132 RH |
7597 | tempreg = treg; |
7598 | /* We set breg to 0 because we have arranged to add | |
f5040a92 | 7599 | it in in both cases. */ |
252b5132 RH |
7600 | breg = 0; |
7601 | } | |
7602 | ||
67c0d1eb RS |
7603 | macro_build_lui (&expr1, AT); |
7604 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 7605 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 7606 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7607 | tempreg, tempreg, AT); |
8fc2e39e | 7608 | used_at = 1; |
252b5132 | 7609 | } |
4d7206a2 | 7610 | relax_end (); |
252b5132 | 7611 | } |
0a44bf69 | 7612 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 7613 | { |
f5040a92 AO |
7614 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
7615 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 7616 | int add_breg_early = 0; |
f5040a92 AO |
7617 | |
7618 | /* This is the large GOT case. If this is a reference to an | |
7619 | external symbol, and there is no constant, we want | |
7620 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7621 | add $tempreg,$tempreg,$gp | |
7622 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 7623 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
7624 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
7625 | add $tempreg,$tempreg,$gp | |
7626 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
7627 | ||
7628 | If we have a small constant, and this is a reference to | |
7629 | an external symbol, we want | |
7630 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7631 | add $tempreg,$tempreg,$gp | |
7632 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7633 | addi $tempreg,$tempreg,<constant> | |
7634 | ||
7635 | If we have a large constant, and this is a reference to | |
7636 | an external symbol, we want | |
7637 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7638 | addu $tempreg,$tempreg,$gp | |
7639 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7640 | lui $at,<hiconstant> | |
7641 | addi $at,$at,<loconstant> | |
7642 | add $tempreg,$tempreg,$at | |
7643 | ||
7644 | If we have NewABI, and we know it's a local symbol, we want | |
7645 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
7646 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
7647 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
7648 | ||
4d7206a2 | 7649 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 7650 | |
4d7206a2 | 7651 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
7652 | offset_expr.X_add_number = 0; |
7653 | ||
1abe91b1 MR |
7654 | if (expr1.X_add_number == 0 && breg == 0 |
7655 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
7656 | { |
7657 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
7658 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
7659 | } | |
df58fc94 | 7660 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 7661 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7662 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
7663 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7664 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
7665 | |
7666 | if (expr1.X_add_number == 0) | |
4d7206a2 | 7667 | ; |
f5040a92 AO |
7668 | else if (expr1.X_add_number >= -0x8000 |
7669 | && expr1.X_add_number < 0x8000) | |
7670 | { | |
67c0d1eb | 7671 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 7672 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 7673 | } |
ecd13cd3 | 7674 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 7675 | { |
f5040a92 AO |
7676 | /* If we are going to add in a base register, and the |
7677 | target register and the base register are the same, | |
7678 | then we are using AT as a temporary register. Since | |
7679 | we want to load the constant into AT, we add our | |
7680 | current AT (from the global offset table) and the | |
7681 | register into the register now, and pretend we were | |
7682 | not using a base register. */ | |
7683 | if (breg != treg) | |
7684 | dreg = tempreg; | |
7685 | else | |
7686 | { | |
9c2799c2 | 7687 | gas_assert (tempreg == AT); |
67c0d1eb | 7688 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7689 | treg, AT, breg); |
f5040a92 | 7690 | dreg = treg; |
67c0d1eb | 7691 | add_breg_early = 1; |
f5040a92 AO |
7692 | } |
7693 | ||
f6a22291 | 7694 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7695 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 7696 | |
f5040a92 AO |
7697 | used_at = 1; |
7698 | } | |
7699 | else | |
7700 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
7701 | ||
4d7206a2 | 7702 | relax_switch (); |
f5040a92 | 7703 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
7704 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7705 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
7706 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
7707 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
7708 | if (add_breg_early) | |
f5040a92 | 7709 | { |
67c0d1eb | 7710 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7711 | treg, tempreg, breg); |
f5040a92 AO |
7712 | breg = 0; |
7713 | tempreg = treg; | |
7714 | } | |
4d7206a2 | 7715 | relax_end (); |
f5040a92 | 7716 | } |
252b5132 RH |
7717 | else |
7718 | abort (); | |
7719 | ||
7720 | if (breg != 0) | |
aed1a261 | 7721 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", treg, tempreg, breg); |
252b5132 RH |
7722 | break; |
7723 | ||
52b6b6b9 | 7724 | case M_MSGSND: |
df58fc94 | 7725 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7726 | { |
7727 | unsigned long temp = (treg << 16) | (0x01); | |
7728 | macro_build (NULL, "c2", "C", temp); | |
7729 | } | |
c7af4273 | 7730 | break; |
52b6b6b9 JM |
7731 | |
7732 | case M_MSGLD: | |
df58fc94 | 7733 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7734 | { |
7735 | unsigned long temp = (0x02); | |
7736 | macro_build (NULL, "c2", "C", temp); | |
7737 | } | |
c7af4273 | 7738 | break; |
52b6b6b9 JM |
7739 | |
7740 | case M_MSGLD_T: | |
df58fc94 | 7741 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7742 | { |
7743 | unsigned long temp = (treg << 16) | (0x02); | |
7744 | macro_build (NULL, "c2", "C", temp); | |
7745 | } | |
c7af4273 | 7746 | break; |
52b6b6b9 JM |
7747 | |
7748 | case M_MSGWAIT: | |
df58fc94 | 7749 | gas_assert (!mips_opts.micromips); |
52b6b6b9 | 7750 | macro_build (NULL, "c2", "C", 3); |
c7af4273 | 7751 | break; |
52b6b6b9 JM |
7752 | |
7753 | case M_MSGWAIT_T: | |
df58fc94 | 7754 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7755 | { |
7756 | unsigned long temp = (treg << 16) | 0x03; | |
7757 | macro_build (NULL, "c2", "C", temp); | |
7758 | } | |
c7af4273 | 7759 | break; |
52b6b6b9 | 7760 | |
252b5132 RH |
7761 | case M_J_A: |
7762 | /* The j instruction may not be used in PIC code, since it | |
7763 | requires an absolute address. We convert it to a b | |
7764 | instruction. */ | |
7765 | if (mips_pic == NO_PIC) | |
67c0d1eb | 7766 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 7767 | else |
67c0d1eb | 7768 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 7769 | break; |
252b5132 RH |
7770 | |
7771 | /* The jal instructions must be handled as macros because when | |
7772 | generating PIC code they expand to multi-instruction | |
7773 | sequences. Normally they are simple instructions. */ | |
df58fc94 RS |
7774 | case M_JALS_1: |
7775 | dreg = RA; | |
7776 | /* Fall through. */ | |
7777 | case M_JALS_2: | |
7778 | gas_assert (mips_opts.micromips); | |
7779 | jals = 1; | |
7780 | goto jal; | |
252b5132 RH |
7781 | case M_JAL_1: |
7782 | dreg = RA; | |
7783 | /* Fall through. */ | |
7784 | case M_JAL_2: | |
df58fc94 | 7785 | jal: |
3e722fb5 | 7786 | if (mips_pic == NO_PIC) |
df58fc94 RS |
7787 | { |
7788 | s = jals ? "jalrs" : "jalr"; | |
e64af278 MR |
7789 | if (mips_opts.micromips |
7790 | && dreg == RA | |
7791 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
df58fc94 RS |
7792 | macro_build (NULL, s, "mj", sreg); |
7793 | else | |
7794 | macro_build (NULL, s, JALR_FMT, dreg, sreg); | |
7795 | } | |
0a44bf69 | 7796 | else |
252b5132 | 7797 | { |
df58fc94 RS |
7798 | int cprestore = (mips_pic == SVR4_PIC && !HAVE_NEWABI |
7799 | && mips_cprestore_offset >= 0); | |
7800 | ||
252b5132 RH |
7801 | if (sreg != PIC_CALL_REG) |
7802 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 7803 | |
df58fc94 RS |
7804 | s = (mips_opts.micromips && (!mips_opts.noreorder || cprestore) |
7805 | ? "jalrs" : "jalr"); | |
e64af278 MR |
7806 | if (mips_opts.micromips |
7807 | && dreg == RA | |
7808 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
df58fc94 RS |
7809 | macro_build (NULL, s, "mj", sreg); |
7810 | else | |
7811 | macro_build (NULL, s, JALR_FMT, dreg, sreg); | |
0a44bf69 | 7812 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 7813 | { |
6478892d TS |
7814 | if (mips_cprestore_offset < 0) |
7815 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7816 | else | |
7817 | { | |
90ecf173 | 7818 | if (!mips_frame_reg_valid) |
7a621144 DJ |
7819 | { |
7820 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
7821 | /* Quiet this warning. */ | |
7822 | mips_frame_reg_valid = 1; | |
7823 | } | |
90ecf173 | 7824 | if (!mips_cprestore_valid) |
7a621144 DJ |
7825 | { |
7826 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7827 | /* Quiet this warning. */ | |
7828 | mips_cprestore_valid = 1; | |
7829 | } | |
d3fca0b5 MR |
7830 | if (mips_opts.noreorder) |
7831 | macro_build (NULL, "nop", ""); | |
6478892d | 7832 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 7833 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 7834 | mips_gp_register, |
256ab948 TS |
7835 | mips_frame_reg, |
7836 | HAVE_64BIT_ADDRESSES); | |
6478892d | 7837 | } |
252b5132 RH |
7838 | } |
7839 | } | |
252b5132 | 7840 | |
8fc2e39e | 7841 | break; |
252b5132 | 7842 | |
df58fc94 RS |
7843 | case M_JALS_A: |
7844 | gas_assert (mips_opts.micromips); | |
7845 | jals = 1; | |
7846 | /* Fall through. */ | |
252b5132 RH |
7847 | case M_JAL_A: |
7848 | if (mips_pic == NO_PIC) | |
df58fc94 | 7849 | macro_build (&offset_expr, jals ? "jals" : "jal", "a"); |
252b5132 RH |
7850 | else if (mips_pic == SVR4_PIC) |
7851 | { | |
7852 | /* If this is a reference to an external symbol, and we are | |
7853 | using a small GOT, we want | |
7854 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
7855 | nop | |
f9419b05 | 7856 | jalr $ra,$25 |
252b5132 RH |
7857 | nop |
7858 | lw $gp,cprestore($sp) | |
7859 | The cprestore value is set using the .cprestore | |
7860 | pseudo-op. If we are using a big GOT, we want | |
7861 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
7862 | addu $25,$25,$gp | |
7863 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
7864 | nop | |
f9419b05 | 7865 | jalr $ra,$25 |
252b5132 RH |
7866 | nop |
7867 | lw $gp,cprestore($sp) | |
7868 | If the symbol is not external, we want | |
7869 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7870 | nop | |
7871 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 7872 | jalr $ra,$25 |
252b5132 | 7873 | nop |
438c16b8 | 7874 | lw $gp,cprestore($sp) |
f5040a92 AO |
7875 | |
7876 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
7877 | sequences above, minus nops, unless the symbol is local, | |
7878 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
7879 | GOT_DISP. */ | |
438c16b8 | 7880 | if (HAVE_NEWABI) |
252b5132 | 7881 | { |
90ecf173 | 7882 | if (!mips_big_got) |
f5040a92 | 7883 | { |
4d7206a2 | 7884 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7885 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7886 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 7887 | mips_gp_register); |
4d7206a2 | 7888 | relax_switch (); |
67c0d1eb RS |
7889 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7890 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
7891 | mips_gp_register); |
7892 | relax_end (); | |
f5040a92 AO |
7893 | } |
7894 | else | |
7895 | { | |
4d7206a2 | 7896 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 7897 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
7898 | BFD_RELOC_MIPS_CALL_HI16); |
7899 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
7900 | PIC_CALL_REG, mips_gp_register); | |
7901 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
7902 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
7903 | PIC_CALL_REG); | |
4d7206a2 | 7904 | relax_switch (); |
67c0d1eb RS |
7905 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7906 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
7907 | mips_gp_register); | |
7908 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7909 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 7910 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 7911 | relax_end (); |
f5040a92 | 7912 | } |
684022ea | 7913 | |
df58fc94 | 7914 | macro_build_jalr (&offset_expr, 0); |
252b5132 RH |
7915 | } |
7916 | else | |
7917 | { | |
4d7206a2 | 7918 | relax_start (offset_expr.X_add_symbol); |
90ecf173 | 7919 | if (!mips_big_got) |
438c16b8 | 7920 | { |
67c0d1eb RS |
7921 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7922 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 7923 | mips_gp_register); |
269137b2 | 7924 | load_delay_nop (); |
4d7206a2 | 7925 | relax_switch (); |
438c16b8 | 7926 | } |
252b5132 | 7927 | else |
252b5132 | 7928 | { |
67c0d1eb RS |
7929 | int gpdelay; |
7930 | ||
7931 | gpdelay = reg_needs_delay (mips_gp_register); | |
df58fc94 | 7932 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
7933 | BFD_RELOC_MIPS_CALL_HI16); |
7934 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
7935 | PIC_CALL_REG, mips_gp_register); | |
7936 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
7937 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
7938 | PIC_CALL_REG); | |
269137b2 | 7939 | load_delay_nop (); |
4d7206a2 | 7940 | relax_switch (); |
67c0d1eb RS |
7941 | if (gpdelay) |
7942 | macro_build (NULL, "nop", ""); | |
252b5132 | 7943 | } |
67c0d1eb RS |
7944 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7945 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 7946 | mips_gp_register); |
269137b2 | 7947 | load_delay_nop (); |
67c0d1eb RS |
7948 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7949 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 7950 | relax_end (); |
df58fc94 | 7951 | macro_build_jalr (&offset_expr, mips_cprestore_offset >= 0); |
438c16b8 | 7952 | |
6478892d TS |
7953 | if (mips_cprestore_offset < 0) |
7954 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7955 | else | |
7956 | { | |
90ecf173 | 7957 | if (!mips_frame_reg_valid) |
7a621144 DJ |
7958 | { |
7959 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
7960 | /* Quiet this warning. */ | |
7961 | mips_frame_reg_valid = 1; | |
7962 | } | |
90ecf173 | 7963 | if (!mips_cprestore_valid) |
7a621144 DJ |
7964 | { |
7965 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7966 | /* Quiet this warning. */ | |
7967 | mips_cprestore_valid = 1; | |
7968 | } | |
6478892d | 7969 | if (mips_opts.noreorder) |
67c0d1eb | 7970 | macro_build (NULL, "nop", ""); |
6478892d | 7971 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 7972 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 7973 | mips_gp_register, |
256ab948 TS |
7974 | mips_frame_reg, |
7975 | HAVE_64BIT_ADDRESSES); | |
6478892d | 7976 | } |
252b5132 RH |
7977 | } |
7978 | } | |
0a44bf69 RS |
7979 | else if (mips_pic == VXWORKS_PIC) |
7980 | as_bad (_("Non-PIC jump used in PIC library")); | |
252b5132 RH |
7981 | else |
7982 | abort (); | |
7983 | ||
8fc2e39e | 7984 | break; |
252b5132 | 7985 | |
dec0624d MR |
7986 | case M_ACLR_AB: |
7987 | ab = 1; | |
7988 | case M_ACLR_OB: | |
7989 | s = "aclr"; | |
7990 | treg = EXTRACT_OPERAND (mips_opts.micromips, 3BITPOS, *ip); | |
7991 | fmt = "\\,~(b)"; | |
7992 | off12 = 1; | |
7993 | goto ld_st; | |
7994 | case M_ASET_AB: | |
7995 | ab = 1; | |
7996 | case M_ASET_OB: | |
7997 | s = "aset"; | |
7998 | treg = EXTRACT_OPERAND (mips_opts.micromips, 3BITPOS, *ip); | |
7999 | fmt = "\\,~(b)"; | |
8000 | off12 = 1; | |
8001 | goto ld_st; | |
252b5132 | 8002 | case M_LB_AB: |
df58fc94 | 8003 | ab = 1; |
252b5132 | 8004 | s = "lb"; |
df58fc94 | 8005 | fmt = "t,o(b)"; |
252b5132 RH |
8006 | goto ld; |
8007 | case M_LBU_AB: | |
df58fc94 | 8008 | ab = 1; |
252b5132 | 8009 | s = "lbu"; |
df58fc94 | 8010 | fmt = "t,o(b)"; |
252b5132 RH |
8011 | goto ld; |
8012 | case M_LH_AB: | |
df58fc94 | 8013 | ab = 1; |
252b5132 | 8014 | s = "lh"; |
df58fc94 | 8015 | fmt = "t,o(b)"; |
252b5132 RH |
8016 | goto ld; |
8017 | case M_LHU_AB: | |
df58fc94 | 8018 | ab = 1; |
252b5132 | 8019 | s = "lhu"; |
df58fc94 | 8020 | fmt = "t,o(b)"; |
252b5132 RH |
8021 | goto ld; |
8022 | case M_LW_AB: | |
df58fc94 | 8023 | ab = 1; |
252b5132 | 8024 | s = "lw"; |
df58fc94 | 8025 | fmt = "t,o(b)"; |
252b5132 RH |
8026 | goto ld; |
8027 | case M_LWC0_AB: | |
df58fc94 RS |
8028 | ab = 1; |
8029 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8030 | s = "lwc0"; |
df58fc94 | 8031 | fmt = "E,o(b)"; |
bdaaa2e1 | 8032 | /* Itbl support may require additional care here. */ |
252b5132 | 8033 | coproc = 1; |
df58fc94 | 8034 | goto ld_st; |
252b5132 | 8035 | case M_LWC1_AB: |
df58fc94 | 8036 | ab = 1; |
252b5132 | 8037 | s = "lwc1"; |
df58fc94 | 8038 | fmt = "T,o(b)"; |
bdaaa2e1 | 8039 | /* Itbl support may require additional care here. */ |
252b5132 | 8040 | coproc = 1; |
df58fc94 | 8041 | goto ld_st; |
252b5132 | 8042 | case M_LWC2_AB: |
df58fc94 RS |
8043 | ab = 1; |
8044 | case M_LWC2_OB: | |
252b5132 | 8045 | s = "lwc2"; |
df58fc94 RS |
8046 | fmt = COP12_FMT; |
8047 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8048 | /* Itbl support may require additional care here. */ |
252b5132 | 8049 | coproc = 1; |
df58fc94 | 8050 | goto ld_st; |
252b5132 | 8051 | case M_LWC3_AB: |
df58fc94 RS |
8052 | ab = 1; |
8053 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8054 | s = "lwc3"; |
df58fc94 | 8055 | fmt = "E,o(b)"; |
bdaaa2e1 | 8056 | /* Itbl support may require additional care here. */ |
252b5132 | 8057 | coproc = 1; |
df58fc94 | 8058 | goto ld_st; |
252b5132 | 8059 | case M_LWL_AB: |
df58fc94 RS |
8060 | ab = 1; |
8061 | case M_LWL_OB: | |
252b5132 | 8062 | s = "lwl"; |
df58fc94 RS |
8063 | fmt = MEM12_FMT; |
8064 | off12 = mips_opts.micromips; | |
8065 | goto ld_st; | |
252b5132 | 8066 | case M_LWR_AB: |
df58fc94 RS |
8067 | ab = 1; |
8068 | case M_LWR_OB: | |
252b5132 | 8069 | s = "lwr"; |
df58fc94 RS |
8070 | fmt = MEM12_FMT; |
8071 | off12 = mips_opts.micromips; | |
8072 | goto ld_st; | |
252b5132 | 8073 | case M_LDC1_AB: |
df58fc94 | 8074 | ab = 1; |
252b5132 | 8075 | s = "ldc1"; |
df58fc94 | 8076 | fmt = "T,o(b)"; |
bdaaa2e1 | 8077 | /* Itbl support may require additional care here. */ |
252b5132 | 8078 | coproc = 1; |
df58fc94 | 8079 | goto ld_st; |
252b5132 | 8080 | case M_LDC2_AB: |
df58fc94 RS |
8081 | ab = 1; |
8082 | case M_LDC2_OB: | |
252b5132 | 8083 | s = "ldc2"; |
df58fc94 RS |
8084 | fmt = COP12_FMT; |
8085 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8086 | /* Itbl support may require additional care here. */ |
252b5132 | 8087 | coproc = 1; |
df58fc94 | 8088 | goto ld_st; |
252b5132 | 8089 | case M_LDC3_AB: |
df58fc94 | 8090 | ab = 1; |
252b5132 | 8091 | s = "ldc3"; |
df58fc94 | 8092 | fmt = "E,o(b)"; |
bdaaa2e1 | 8093 | /* Itbl support may require additional care here. */ |
252b5132 | 8094 | coproc = 1; |
df58fc94 | 8095 | goto ld_st; |
252b5132 | 8096 | case M_LDL_AB: |
df58fc94 RS |
8097 | ab = 1; |
8098 | case M_LDL_OB: | |
252b5132 | 8099 | s = "ldl"; |
df58fc94 RS |
8100 | fmt = MEM12_FMT; |
8101 | off12 = mips_opts.micromips; | |
8102 | goto ld_st; | |
252b5132 | 8103 | case M_LDR_AB: |
df58fc94 RS |
8104 | ab = 1; |
8105 | case M_LDR_OB: | |
252b5132 | 8106 | s = "ldr"; |
df58fc94 RS |
8107 | fmt = MEM12_FMT; |
8108 | off12 = mips_opts.micromips; | |
8109 | goto ld_st; | |
252b5132 | 8110 | case M_LL_AB: |
df58fc94 RS |
8111 | ab = 1; |
8112 | case M_LL_OB: | |
252b5132 | 8113 | s = "ll"; |
df58fc94 RS |
8114 | fmt = MEM12_FMT; |
8115 | off12 = mips_opts.micromips; | |
252b5132 RH |
8116 | goto ld; |
8117 | case M_LLD_AB: | |
df58fc94 RS |
8118 | ab = 1; |
8119 | case M_LLD_OB: | |
252b5132 | 8120 | s = "lld"; |
df58fc94 RS |
8121 | fmt = MEM12_FMT; |
8122 | off12 = mips_opts.micromips; | |
252b5132 RH |
8123 | goto ld; |
8124 | case M_LWU_AB: | |
df58fc94 RS |
8125 | ab = 1; |
8126 | case M_LWU_OB: | |
252b5132 | 8127 | s = "lwu"; |
df58fc94 RS |
8128 | fmt = MEM12_FMT; |
8129 | off12 = mips_opts.micromips; | |
8130 | goto ld; | |
8131 | case M_LWP_AB: | |
8132 | ab = 1; | |
8133 | case M_LWP_OB: | |
8134 | gas_assert (mips_opts.micromips); | |
8135 | s = "lwp"; | |
8136 | fmt = "t,~(b)"; | |
8137 | off12 = 1; | |
8138 | lp = 1; | |
8139 | goto ld; | |
8140 | case M_LDP_AB: | |
8141 | ab = 1; | |
8142 | case M_LDP_OB: | |
8143 | gas_assert (mips_opts.micromips); | |
8144 | s = "ldp"; | |
8145 | fmt = "t,~(b)"; | |
8146 | off12 = 1; | |
8147 | lp = 1; | |
8148 | goto ld; | |
8149 | case M_LWM_AB: | |
8150 | ab = 1; | |
8151 | case M_LWM_OB: | |
8152 | gas_assert (mips_opts.micromips); | |
8153 | s = "lwm"; | |
8154 | fmt = "n,~(b)"; | |
8155 | off12 = 1; | |
8156 | goto ld_st; | |
8157 | case M_LDM_AB: | |
8158 | ab = 1; | |
8159 | case M_LDM_OB: | |
8160 | gas_assert (mips_opts.micromips); | |
8161 | s = "ldm"; | |
8162 | fmt = "n,~(b)"; | |
8163 | off12 = 1; | |
8164 | goto ld_st; | |
8165 | ||
252b5132 | 8166 | ld: |
df58fc94 RS |
8167 | if (breg == treg + lp) |
8168 | goto ld_st; | |
252b5132 | 8169 | else |
df58fc94 RS |
8170 | tempreg = treg + lp; |
8171 | goto ld_noat; | |
8172 | ||
252b5132 | 8173 | case M_SB_AB: |
df58fc94 | 8174 | ab = 1; |
252b5132 | 8175 | s = "sb"; |
df58fc94 RS |
8176 | fmt = "t,o(b)"; |
8177 | goto ld_st; | |
252b5132 | 8178 | case M_SH_AB: |
df58fc94 | 8179 | ab = 1; |
252b5132 | 8180 | s = "sh"; |
df58fc94 RS |
8181 | fmt = "t,o(b)"; |
8182 | goto ld_st; | |
252b5132 | 8183 | case M_SW_AB: |
df58fc94 | 8184 | ab = 1; |
252b5132 | 8185 | s = "sw"; |
df58fc94 RS |
8186 | fmt = "t,o(b)"; |
8187 | goto ld_st; | |
252b5132 | 8188 | case M_SWC0_AB: |
df58fc94 RS |
8189 | ab = 1; |
8190 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8191 | s = "swc0"; |
df58fc94 | 8192 | fmt = "E,o(b)"; |
bdaaa2e1 | 8193 | /* Itbl support may require additional care here. */ |
252b5132 | 8194 | coproc = 1; |
df58fc94 | 8195 | goto ld_st; |
252b5132 | 8196 | case M_SWC1_AB: |
df58fc94 | 8197 | ab = 1; |
252b5132 | 8198 | s = "swc1"; |
df58fc94 | 8199 | fmt = "T,o(b)"; |
bdaaa2e1 | 8200 | /* Itbl support may require additional care here. */ |
252b5132 | 8201 | coproc = 1; |
df58fc94 | 8202 | goto ld_st; |
252b5132 | 8203 | case M_SWC2_AB: |
df58fc94 RS |
8204 | ab = 1; |
8205 | case M_SWC2_OB: | |
252b5132 | 8206 | s = "swc2"; |
df58fc94 RS |
8207 | fmt = COP12_FMT; |
8208 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8209 | /* Itbl support may require additional care here. */ |
252b5132 | 8210 | coproc = 1; |
df58fc94 | 8211 | goto ld_st; |
252b5132 | 8212 | case M_SWC3_AB: |
df58fc94 RS |
8213 | ab = 1; |
8214 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8215 | s = "swc3"; |
df58fc94 | 8216 | fmt = "E,o(b)"; |
bdaaa2e1 | 8217 | /* Itbl support may require additional care here. */ |
252b5132 | 8218 | coproc = 1; |
df58fc94 | 8219 | goto ld_st; |
252b5132 | 8220 | case M_SWL_AB: |
df58fc94 RS |
8221 | ab = 1; |
8222 | case M_SWL_OB: | |
252b5132 | 8223 | s = "swl"; |
df58fc94 RS |
8224 | fmt = MEM12_FMT; |
8225 | off12 = mips_opts.micromips; | |
8226 | goto ld_st; | |
252b5132 | 8227 | case M_SWR_AB: |
df58fc94 RS |
8228 | ab = 1; |
8229 | case M_SWR_OB: | |
252b5132 | 8230 | s = "swr"; |
df58fc94 RS |
8231 | fmt = MEM12_FMT; |
8232 | off12 = mips_opts.micromips; | |
8233 | goto ld_st; | |
252b5132 | 8234 | case M_SC_AB: |
df58fc94 RS |
8235 | ab = 1; |
8236 | case M_SC_OB: | |
252b5132 | 8237 | s = "sc"; |
df58fc94 RS |
8238 | fmt = MEM12_FMT; |
8239 | off12 = mips_opts.micromips; | |
8240 | goto ld_st; | |
252b5132 | 8241 | case M_SCD_AB: |
df58fc94 RS |
8242 | ab = 1; |
8243 | case M_SCD_OB: | |
252b5132 | 8244 | s = "scd"; |
df58fc94 RS |
8245 | fmt = MEM12_FMT; |
8246 | off12 = mips_opts.micromips; | |
8247 | goto ld_st; | |
d43b4baf | 8248 | case M_CACHE_AB: |
df58fc94 RS |
8249 | ab = 1; |
8250 | case M_CACHE_OB: | |
d43b4baf | 8251 | s = "cache"; |
df58fc94 RS |
8252 | fmt = mips_opts.micromips ? "k,~(b)" : "k,o(b)"; |
8253 | off12 = mips_opts.micromips; | |
8254 | goto ld_st; | |
3eebd5eb | 8255 | case M_PREF_AB: |
df58fc94 RS |
8256 | ab = 1; |
8257 | case M_PREF_OB: | |
3eebd5eb | 8258 | s = "pref"; |
df58fc94 RS |
8259 | fmt = !mips_opts.micromips ? "k,o(b)" : "k,~(b)"; |
8260 | off12 = mips_opts.micromips; | |
8261 | goto ld_st; | |
252b5132 | 8262 | case M_SDC1_AB: |
df58fc94 | 8263 | ab = 1; |
252b5132 | 8264 | s = "sdc1"; |
df58fc94 | 8265 | fmt = "T,o(b)"; |
252b5132 | 8266 | coproc = 1; |
bdaaa2e1 | 8267 | /* Itbl support may require additional care here. */ |
df58fc94 | 8268 | goto ld_st; |
252b5132 | 8269 | case M_SDC2_AB: |
df58fc94 RS |
8270 | ab = 1; |
8271 | case M_SDC2_OB: | |
252b5132 | 8272 | s = "sdc2"; |
df58fc94 RS |
8273 | fmt = COP12_FMT; |
8274 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8275 | /* Itbl support may require additional care here. */ |
252b5132 | 8276 | coproc = 1; |
df58fc94 | 8277 | goto ld_st; |
252b5132 | 8278 | case M_SDC3_AB: |
df58fc94 RS |
8279 | ab = 1; |
8280 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8281 | s = "sdc3"; |
df58fc94 | 8282 | fmt = "E,o(b)"; |
bdaaa2e1 | 8283 | /* Itbl support may require additional care here. */ |
252b5132 | 8284 | coproc = 1; |
df58fc94 | 8285 | goto ld_st; |
252b5132 | 8286 | case M_SDL_AB: |
df58fc94 RS |
8287 | ab = 1; |
8288 | case M_SDL_OB: | |
252b5132 | 8289 | s = "sdl"; |
df58fc94 RS |
8290 | fmt = MEM12_FMT; |
8291 | off12 = mips_opts.micromips; | |
8292 | goto ld_st; | |
252b5132 | 8293 | case M_SDR_AB: |
df58fc94 RS |
8294 | ab = 1; |
8295 | case M_SDR_OB: | |
252b5132 | 8296 | s = "sdr"; |
df58fc94 RS |
8297 | fmt = MEM12_FMT; |
8298 | off12 = mips_opts.micromips; | |
8299 | goto ld_st; | |
8300 | case M_SWP_AB: | |
8301 | ab = 1; | |
8302 | case M_SWP_OB: | |
8303 | gas_assert (mips_opts.micromips); | |
8304 | s = "swp"; | |
8305 | fmt = "t,~(b)"; | |
8306 | off12 = 1; | |
8307 | goto ld_st; | |
8308 | case M_SDP_AB: | |
8309 | ab = 1; | |
8310 | case M_SDP_OB: | |
8311 | gas_assert (mips_opts.micromips); | |
8312 | s = "sdp"; | |
8313 | fmt = "t,~(b)"; | |
8314 | off12 = 1; | |
8315 | goto ld_st; | |
8316 | case M_SWM_AB: | |
8317 | ab = 1; | |
8318 | case M_SWM_OB: | |
8319 | gas_assert (mips_opts.micromips); | |
8320 | s = "swm"; | |
8321 | fmt = "n,~(b)"; | |
8322 | off12 = 1; | |
8323 | goto ld_st; | |
8324 | case M_SDM_AB: | |
8325 | ab = 1; | |
8326 | case M_SDM_OB: | |
8327 | gas_assert (mips_opts.micromips); | |
8328 | s = "sdm"; | |
8329 | fmt = "n,~(b)"; | |
8330 | off12 = 1; | |
8331 | ||
8332 | ld_st: | |
8fc2e39e TS |
8333 | tempreg = AT; |
8334 | used_at = 1; | |
df58fc94 | 8335 | ld_noat: |
252b5132 RH |
8336 | if (offset_expr.X_op != O_constant |
8337 | && offset_expr.X_op != O_symbol) | |
8338 | { | |
f71d0d44 | 8339 | as_bad (_("Expression too complex")); |
252b5132 RH |
8340 | offset_expr.X_op = O_constant; |
8341 | } | |
8342 | ||
2051e8c4 MR |
8343 | if (HAVE_32BIT_ADDRESSES |
8344 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
8345 | { |
8346 | char value [32]; | |
8347 | ||
8348 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 8349 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 8350 | } |
2051e8c4 | 8351 | |
252b5132 RH |
8352 | /* A constant expression in PIC code can be handled just as it |
8353 | is in non PIC code. */ | |
aed1a261 RS |
8354 | if (offset_expr.X_op == O_constant) |
8355 | { | |
df58fc94 RS |
8356 | int hipart = 0; |
8357 | ||
842f8b2a | 8358 | expr1.X_add_number = offset_expr.X_add_number; |
2051e8c4 | 8359 | normalize_address_expr (&expr1); |
df58fc94 | 8360 | if (!off12 && !IS_SEXT_16BIT_NUM (expr1.X_add_number)) |
842f8b2a MR |
8361 | { |
8362 | expr1.X_add_number = ((expr1.X_add_number + 0x8000) | |
8363 | & ~(bfd_vma) 0xffff); | |
df58fc94 RS |
8364 | hipart = 1; |
8365 | } | |
8366 | else if (off12 && !IS_SEXT_12BIT_NUM (expr1.X_add_number)) | |
8367 | { | |
8368 | expr1.X_add_number = ((expr1.X_add_number + 0x800) | |
8369 | & ~(bfd_vma) 0xfff); | |
8370 | hipart = 1; | |
8371 | } | |
8372 | if (hipart) | |
8373 | { | |
842f8b2a MR |
8374 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
8375 | if (breg != 0) | |
8376 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8377 | tempreg, tempreg, breg); | |
8378 | breg = tempreg; | |
8379 | } | |
dd6a37e7 AP |
8380 | if (off0) |
8381 | { | |
8382 | if (offset_expr.X_add_number == 0) | |
8383 | tempreg = breg; | |
8384 | else | |
8385 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, | |
8386 | "t,r,j", tempreg, breg, BFD_RELOC_LO16); | |
8387 | macro_build (NULL, s, fmt, treg, tempreg); | |
8388 | } | |
8389 | else if (!off12) | |
df58fc94 RS |
8390 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, breg); |
8391 | else | |
8392 | macro_build (NULL, s, fmt, | |
8393 | treg, (unsigned long) offset_expr.X_add_number, breg); | |
8394 | } | |
dd6a37e7 | 8395 | else if (off12 || off0) |
df58fc94 | 8396 | { |
dd6a37e7 AP |
8397 | /* A 12-bit or 0-bit offset field is too narrow to be used |
8398 | for a low-part relocation, so load the whole address into | |
8399 | the auxillary register. In the case of "A(b)" addresses, | |
8400 | we first load absolute address "A" into the register and | |
8401 | then add base register "b". In the case of "o(b)" addresses, | |
8402 | we simply need to add 16-bit offset "o" to base register "b", and | |
df58fc94 RS |
8403 | offset_reloc already contains the relocations associated |
8404 | with "o". */ | |
8405 | if (ab) | |
8406 | { | |
8407 | load_address (tempreg, &offset_expr, &used_at); | |
8408 | if (breg != 0) | |
8409 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8410 | tempreg, tempreg, breg); | |
8411 | } | |
8412 | else | |
8413 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
8414 | tempreg, breg, -1, | |
8415 | offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
8416 | expr1.X_add_number = 0; | |
dd6a37e7 AP |
8417 | if (off0) |
8418 | macro_build (NULL, s, fmt, treg, tempreg); | |
8419 | else | |
8420 | macro_build (NULL, s, fmt, | |
8421 | treg, (unsigned long) expr1.X_add_number, tempreg); | |
aed1a261 RS |
8422 | } |
8423 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
8424 | { |
8425 | /* If this is a reference to a GP relative symbol, and there | |
8426 | is no base register, we want | |
cdf6fd85 | 8427 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
8428 | Otherwise, if there is no base register, we want |
8429 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8430 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8431 | If we have a constant, we need two instructions anyhow, | |
8432 | so we always use the latter form. | |
8433 | ||
8434 | If we have a base register, and this is a reference to a | |
8435 | GP relative symbol, we want | |
8436 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 8437 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
8438 | Otherwise we want |
8439 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8440 | addu $tempreg,$tempreg,$breg | |
8441 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 8442 | With a constant we always use the latter case. |
76b3015f | 8443 | |
d6bc6245 TS |
8444 | With 64bit address space and no base register and $at usable, |
8445 | we want | |
8446 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8447 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8448 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8449 | dsll32 $tempreg,0 | |
8450 | daddu $tempreg,$at | |
8451 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8452 | If we have a base register, we want | |
8453 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8454 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8455 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8456 | daddu $at,$breg | |
8457 | dsll32 $tempreg,0 | |
8458 | daddu $tempreg,$at | |
8459 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8460 | ||
8461 | Without $at we can't generate the optimal path for superscalar | |
8462 | processors here since this would require two temporary registers. | |
8463 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8464 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8465 | dsll $tempreg,16 | |
8466 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8467 | dsll $tempreg,16 | |
8468 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8469 | If we have a base register, we want | |
8470 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8471 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8472 | dsll $tempreg,16 | |
8473 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8474 | dsll $tempreg,16 | |
8475 | daddu $tempreg,$tempreg,$breg | |
8476 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 | 8477 | |
6caf9ef4 | 8478 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
8479 | the same sequence as in 32bit address space. */ |
8480 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 8481 | { |
aed1a261 | 8482 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
8483 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
8484 | { | |
8485 | relax_start (offset_expr.X_add_symbol); | |
8486 | if (breg == 0) | |
8487 | { | |
8488 | macro_build (&offset_expr, s, fmt, treg, | |
8489 | BFD_RELOC_GPREL16, mips_gp_register); | |
8490 | } | |
8491 | else | |
8492 | { | |
8493 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8494 | tempreg, breg, mips_gp_register); | |
8495 | macro_build (&offset_expr, s, fmt, treg, | |
8496 | BFD_RELOC_GPREL16, tempreg); | |
8497 | } | |
8498 | relax_switch (); | |
8499 | } | |
d6bc6245 | 8500 | |
741fe287 | 8501 | if (used_at == 0 && mips_opts.at) |
d6bc6245 | 8502 | { |
df58fc94 | 8503 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb | 8504 | BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 8505 | macro_build (&offset_expr, "lui", LUI_FMT, AT, |
67c0d1eb RS |
8506 | BFD_RELOC_HI16_S); |
8507 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
8508 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 8509 | if (breg != 0) |
67c0d1eb | 8510 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
df58fc94 | 8511 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb RS |
8512 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
8513 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, | |
8514 | tempreg); | |
d6bc6245 TS |
8515 | used_at = 1; |
8516 | } | |
8517 | else | |
8518 | { | |
df58fc94 | 8519 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb RS |
8520 | BFD_RELOC_MIPS_HIGHEST); |
8521 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
8522 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 8523 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb RS |
8524 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, |
8525 | tempreg, BFD_RELOC_HI16_S); | |
df58fc94 | 8526 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
d6bc6245 | 8527 | if (breg != 0) |
67c0d1eb | 8528 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 8529 | tempreg, tempreg, breg); |
67c0d1eb | 8530 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8531 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 8532 | } |
6caf9ef4 TS |
8533 | |
8534 | if (mips_relax.sequence) | |
8535 | relax_end (); | |
8fc2e39e | 8536 | break; |
d6bc6245 | 8537 | } |
256ab948 | 8538 | |
252b5132 RH |
8539 | if (breg == 0) |
8540 | { | |
67c0d1eb | 8541 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 8542 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8543 | { |
4d7206a2 | 8544 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
8545 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_GPREL16, |
8546 | mips_gp_register); | |
4d7206a2 | 8547 | relax_switch (); |
252b5132 | 8548 | } |
67c0d1eb RS |
8549 | macro_build_lui (&offset_expr, tempreg); |
8550 | macro_build (&offset_expr, s, fmt, treg, | |
17a2f251 | 8551 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
8552 | if (mips_relax.sequence) |
8553 | relax_end (); | |
252b5132 RH |
8554 | } |
8555 | else | |
8556 | { | |
67c0d1eb | 8557 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 8558 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8559 | { |
4d7206a2 | 8560 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 8561 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8562 | tempreg, breg, mips_gp_register); |
67c0d1eb | 8563 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8564 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 8565 | relax_switch (); |
252b5132 | 8566 | } |
67c0d1eb RS |
8567 | macro_build_lui (&offset_expr, tempreg); |
8568 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 8569 | tempreg, tempreg, breg); |
67c0d1eb | 8570 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8571 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
8572 | if (mips_relax.sequence) |
8573 | relax_end (); | |
252b5132 RH |
8574 | } |
8575 | } | |
0a44bf69 | 8576 | else if (!mips_big_got) |
252b5132 | 8577 | { |
ed6fb7bd | 8578 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 8579 | |
252b5132 RH |
8580 | /* If this is a reference to an external symbol, we want |
8581 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8582 | nop | |
8583 | <op> $treg,0($tempreg) | |
8584 | Otherwise we want | |
8585 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8586 | nop | |
8587 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
8588 | <op> $treg,0($tempreg) | |
f5040a92 AO |
8589 | |
8590 | For NewABI, we want | |
8591 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
8592 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) | |
8593 | ||
252b5132 RH |
8594 | If there is a base register, we add it to $tempreg before |
8595 | the <op>. If there is a constant, we stick it in the | |
8596 | <op> instruction. We don't handle constants larger than | |
8597 | 16 bits, because we have no way to load the upper 16 bits | |
8598 | (actually, we could handle them for the subset of cases | |
8599 | in which we are not using $at). */ | |
9c2799c2 | 8600 | gas_assert (offset_expr.X_op == O_symbol); |
f5040a92 AO |
8601 | if (HAVE_NEWABI) |
8602 | { | |
67c0d1eb RS |
8603 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8604 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 8605 | if (breg != 0) |
67c0d1eb | 8606 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8607 | tempreg, tempreg, breg); |
67c0d1eb | 8608 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8609 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
8610 | break; |
8611 | } | |
252b5132 RH |
8612 | expr1.X_add_number = offset_expr.X_add_number; |
8613 | offset_expr.X_add_number = 0; | |
8614 | if (expr1.X_add_number < -0x8000 | |
8615 | || expr1.X_add_number >= 0x8000) | |
8616 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
8617 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8618 | lw_reloc_type, mips_gp_register); | |
269137b2 | 8619 | load_delay_nop (); |
4d7206a2 RS |
8620 | relax_start (offset_expr.X_add_symbol); |
8621 | relax_switch (); | |
67c0d1eb RS |
8622 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
8623 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 8624 | relax_end (); |
252b5132 | 8625 | if (breg != 0) |
67c0d1eb | 8626 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8627 | tempreg, tempreg, breg); |
67c0d1eb | 8628 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 8629 | } |
0a44bf69 | 8630 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 8631 | { |
67c0d1eb | 8632 | int gpdelay; |
252b5132 RH |
8633 | |
8634 | /* If this is a reference to an external symbol, we want | |
8635 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8636 | addu $tempreg,$tempreg,$gp | |
8637 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
8638 | <op> $treg,0($tempreg) | |
8639 | Otherwise we want | |
8640 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8641 | nop | |
8642 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
8643 | <op> $treg,0($tempreg) | |
8644 | If there is a base register, we add it to $tempreg before | |
8645 | the <op>. If there is a constant, we stick it in the | |
8646 | <op> instruction. We don't handle constants larger than | |
8647 | 16 bits, because we have no way to load the upper 16 bits | |
8648 | (actually, we could handle them for the subset of cases | |
f5040a92 | 8649 | in which we are not using $at). */ |
9c2799c2 | 8650 | gas_assert (offset_expr.X_op == O_symbol); |
252b5132 RH |
8651 | expr1.X_add_number = offset_expr.X_add_number; |
8652 | offset_expr.X_add_number = 0; | |
8653 | if (expr1.X_add_number < -0x8000 | |
8654 | || expr1.X_add_number >= 0x8000) | |
8655 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 8656 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 8657 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 8658 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 8659 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8660 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
8661 | mips_gp_register); | |
8662 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8663 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 8664 | relax_switch (); |
67c0d1eb RS |
8665 | if (gpdelay) |
8666 | macro_build (NULL, "nop", ""); | |
8667 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8668 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 8669 | load_delay_nop (); |
67c0d1eb RS |
8670 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
8671 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
8672 | relax_end (); |
8673 | ||
252b5132 | 8674 | if (breg != 0) |
67c0d1eb | 8675 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8676 | tempreg, tempreg, breg); |
67c0d1eb | 8677 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 8678 | } |
0a44bf69 | 8679 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 8680 | { |
f5040a92 AO |
8681 | /* If this is a reference to an external symbol, we want |
8682 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8683 | add $tempreg,$tempreg,$gp | |
8684 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
8685 | <op> $treg,<ofst>($tempreg) | |
8686 | Otherwise, for local symbols, we want: | |
8687 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
8688 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ | |
9c2799c2 | 8689 | gas_assert (offset_expr.X_op == O_symbol); |
4d7206a2 | 8690 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
8691 | offset_expr.X_add_number = 0; |
8692 | if (expr1.X_add_number < -0x8000 | |
8693 | || expr1.X_add_number >= 0x8000) | |
8694 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 8695 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 8696 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 8697 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8698 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
8699 | mips_gp_register); | |
8700 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8701 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 8702 | if (breg != 0) |
67c0d1eb | 8703 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8704 | tempreg, tempreg, breg); |
67c0d1eb | 8705 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
684022ea | 8706 | |
4d7206a2 | 8707 | relax_switch (); |
f5040a92 | 8708 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
8709 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8710 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 8711 | if (breg != 0) |
67c0d1eb | 8712 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8713 | tempreg, tempreg, breg); |
67c0d1eb | 8714 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8715 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 8716 | relax_end (); |
f5040a92 | 8717 | } |
252b5132 RH |
8718 | else |
8719 | abort (); | |
8720 | ||
252b5132 RH |
8721 | break; |
8722 | ||
8723 | case M_LI: | |
8724 | case M_LI_S: | |
67c0d1eb | 8725 | load_register (treg, &imm_expr, 0); |
8fc2e39e | 8726 | break; |
252b5132 RH |
8727 | |
8728 | case M_DLI: | |
67c0d1eb | 8729 | load_register (treg, &imm_expr, 1); |
8fc2e39e | 8730 | break; |
252b5132 RH |
8731 | |
8732 | case M_LI_SS: | |
8733 | if (imm_expr.X_op == O_constant) | |
8734 | { | |
8fc2e39e | 8735 | used_at = 1; |
67c0d1eb RS |
8736 | load_register (AT, &imm_expr, 0); |
8737 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
8738 | break; |
8739 | } | |
8740 | else | |
8741 | { | |
9c2799c2 | 8742 | gas_assert (offset_expr.X_op == O_symbol |
90ecf173 MR |
8743 | && strcmp (segment_name (S_GET_SEGMENT |
8744 | (offset_expr.X_add_symbol)), | |
8745 | ".lit4") == 0 | |
8746 | && offset_expr.X_add_number == 0); | |
67c0d1eb | 8747 | macro_build (&offset_expr, "lwc1", "T,o(b)", treg, |
17a2f251 | 8748 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 8749 | break; |
252b5132 RH |
8750 | } |
8751 | ||
8752 | case M_LI_D: | |
ca4e0257 RS |
8753 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
8754 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
8755 | order 32 bits of the value and the low order 32 bits are either | |
8756 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
8757 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
8758 | { | |
ca4e0257 | 8759 | if (HAVE_64BIT_GPRS) |
67c0d1eb | 8760 | load_register (treg, &imm_expr, 1); |
252b5132 RH |
8761 | else |
8762 | { | |
8763 | int hreg, lreg; | |
8764 | ||
8765 | if (target_big_endian) | |
8766 | { | |
8767 | hreg = treg; | |
8768 | lreg = treg + 1; | |
8769 | } | |
8770 | else | |
8771 | { | |
8772 | hreg = treg + 1; | |
8773 | lreg = treg; | |
8774 | } | |
8775 | ||
8776 | if (hreg <= 31) | |
67c0d1eb | 8777 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
8778 | if (lreg <= 31) |
8779 | { | |
8780 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 8781 | move_register (lreg, 0); |
252b5132 RH |
8782 | else |
8783 | { | |
9c2799c2 | 8784 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 8785 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
8786 | } |
8787 | } | |
8788 | } | |
8fc2e39e | 8789 | break; |
252b5132 RH |
8790 | } |
8791 | ||
8792 | /* We know that sym is in the .rdata section. First we get the | |
8793 | upper 16 bits of the address. */ | |
8794 | if (mips_pic == NO_PIC) | |
8795 | { | |
67c0d1eb | 8796 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 8797 | used_at = 1; |
252b5132 | 8798 | } |
0a44bf69 | 8799 | else |
252b5132 | 8800 | { |
67c0d1eb RS |
8801 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
8802 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 8803 | used_at = 1; |
252b5132 | 8804 | } |
bdaaa2e1 | 8805 | |
252b5132 | 8806 | /* Now we load the register(s). */ |
ca4e0257 | 8807 | if (HAVE_64BIT_GPRS) |
8fc2e39e TS |
8808 | { |
8809 | used_at = 1; | |
8810 | macro_build (&offset_expr, "ld", "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
8811 | } | |
252b5132 RH |
8812 | else |
8813 | { | |
8fc2e39e | 8814 | used_at = 1; |
67c0d1eb | 8815 | macro_build (&offset_expr, "lw", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
f9419b05 | 8816 | if (treg != RA) |
252b5132 RH |
8817 | { |
8818 | /* FIXME: How in the world do we deal with the possible | |
8819 | overflow here? */ | |
8820 | offset_expr.X_add_number += 4; | |
67c0d1eb | 8821 | macro_build (&offset_expr, "lw", "t,o(b)", |
17a2f251 | 8822 | treg + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
8823 | } |
8824 | } | |
252b5132 RH |
8825 | break; |
8826 | ||
8827 | case M_LI_DD: | |
ca4e0257 RS |
8828 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
8829 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
8830 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
8831 | the value and the low order 32 bits are either zero or in | |
8832 | OFFSET_EXPR. */ | |
252b5132 RH |
8833 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
8834 | { | |
8fc2e39e | 8835 | used_at = 1; |
67c0d1eb | 8836 | load_register (AT, &imm_expr, HAVE_64BIT_FPRS); |
ca4e0257 RS |
8837 | if (HAVE_64BIT_FPRS) |
8838 | { | |
9c2799c2 | 8839 | gas_assert (HAVE_64BIT_GPRS); |
67c0d1eb | 8840 | macro_build (NULL, "dmtc1", "t,S", AT, treg); |
ca4e0257 | 8841 | } |
252b5132 RH |
8842 | else |
8843 | { | |
67c0d1eb | 8844 | macro_build (NULL, "mtc1", "t,G", AT, treg + 1); |
252b5132 | 8845 | if (offset_expr.X_op == O_absent) |
67c0d1eb | 8846 | macro_build (NULL, "mtc1", "t,G", 0, treg); |
252b5132 RH |
8847 | else |
8848 | { | |
9c2799c2 | 8849 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb RS |
8850 | load_register (AT, &offset_expr, 0); |
8851 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
8852 | } |
8853 | } | |
8854 | break; | |
8855 | } | |
8856 | ||
9c2799c2 | 8857 | gas_assert (offset_expr.X_op == O_symbol |
90ecf173 | 8858 | && offset_expr.X_add_number == 0); |
252b5132 RH |
8859 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); |
8860 | if (strcmp (s, ".lit8") == 0) | |
8861 | { | |
df58fc94 | 8862 | if (mips_opts.isa != ISA_MIPS1 || mips_opts.micromips) |
252b5132 | 8863 | { |
67c0d1eb | 8864 | macro_build (&offset_expr, "ldc1", "T,o(b)", treg, |
17a2f251 | 8865 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 8866 | break; |
252b5132 | 8867 | } |
c9914766 | 8868 | breg = mips_gp_register; |
252b5132 RH |
8869 | r = BFD_RELOC_MIPS_LITERAL; |
8870 | goto dob; | |
8871 | } | |
8872 | else | |
8873 | { | |
9c2799c2 | 8874 | gas_assert (strcmp (s, RDATA_SECTION_NAME) == 0); |
8fc2e39e | 8875 | used_at = 1; |
0a44bf69 | 8876 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
8877 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
8878 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
8879 | else |
8880 | { | |
8881 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 8882 | macro_build_lui (&offset_expr, AT); |
252b5132 | 8883 | } |
bdaaa2e1 | 8884 | |
df58fc94 | 8885 | if (mips_opts.isa != ISA_MIPS1 || mips_opts.micromips) |
252b5132 | 8886 | { |
67c0d1eb RS |
8887 | macro_build (&offset_expr, "ldc1", "T,o(b)", |
8888 | treg, BFD_RELOC_LO16, AT); | |
252b5132 RH |
8889 | break; |
8890 | } | |
8891 | breg = AT; | |
8892 | r = BFD_RELOC_LO16; | |
8893 | goto dob; | |
8894 | } | |
8895 | ||
8896 | case M_L_DOB: | |
252b5132 RH |
8897 | /* Even on a big endian machine $fn comes before $fn+1. We have |
8898 | to adjust when loading from memory. */ | |
8899 | r = BFD_RELOC_LO16; | |
8900 | dob: | |
df58fc94 | 8901 | gas_assert (!mips_opts.micromips); |
9c2799c2 | 8902 | gas_assert (mips_opts.isa == ISA_MIPS1); |
67c0d1eb | 8903 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 8904 | target_big_endian ? treg + 1 : treg, r, breg); |
252b5132 RH |
8905 | /* FIXME: A possible overflow which I don't know how to deal |
8906 | with. */ | |
8907 | offset_expr.X_add_number += 4; | |
67c0d1eb | 8908 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 8909 | target_big_endian ? treg : treg + 1, r, breg); |
252b5132 RH |
8910 | break; |
8911 | ||
c4a68bea | 8912 | case M_S_DOB: |
df58fc94 | 8913 | gas_assert (!mips_opts.micromips); |
c4a68bea MR |
8914 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8915 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
8916 | to adjust when storing to memory. */ | |
8917 | macro_build (&offset_expr, "swc1", "T,o(b)", | |
8918 | target_big_endian ? treg + 1 : treg, BFD_RELOC_LO16, breg); | |
8919 | offset_expr.X_add_number += 4; | |
8920 | macro_build (&offset_expr, "swc1", "T,o(b)", | |
8921 | target_big_endian ? treg : treg + 1, BFD_RELOC_LO16, breg); | |
8922 | break; | |
8923 | ||
252b5132 | 8924 | case M_L_DAB: |
df58fc94 | 8925 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
8926 | /* |
8927 | * The MIPS assembler seems to check for X_add_number not | |
8928 | * being double aligned and generating: | |
8929 | * lui at,%hi(foo+1) | |
8930 | * addu at,at,v1 | |
8931 | * addiu at,at,%lo(foo+1) | |
8932 | * lwc1 f2,0(at) | |
8933 | * lwc1 f3,4(at) | |
8934 | * But, the resulting address is the same after relocation so why | |
8935 | * generate the extra instruction? | |
8936 | */ | |
bdaaa2e1 | 8937 | /* Itbl support may require additional care here. */ |
252b5132 | 8938 | coproc = 1; |
df58fc94 | 8939 | fmt = "T,o(b)"; |
e7af610e | 8940 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
8941 | { |
8942 | s = "ldc1"; | |
df58fc94 | 8943 | goto ld_st; |
252b5132 | 8944 | } |
252b5132 | 8945 | s = "lwc1"; |
252b5132 RH |
8946 | goto ldd_std; |
8947 | ||
8948 | case M_S_DAB: | |
df58fc94 RS |
8949 | gas_assert (!mips_opts.micromips); |
8950 | /* Itbl support may require additional care here. */ | |
8951 | coproc = 1; | |
8952 | fmt = "T,o(b)"; | |
e7af610e | 8953 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
8954 | { |
8955 | s = "sdc1"; | |
df58fc94 | 8956 | goto ld_st; |
252b5132 | 8957 | } |
252b5132 | 8958 | s = "swc1"; |
252b5132 RH |
8959 | goto ldd_std; |
8960 | ||
8961 | case M_LD_AB: | |
df58fc94 | 8962 | fmt = "t,o(b)"; |
ca4e0257 | 8963 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
8964 | { |
8965 | s = "ld"; | |
8966 | goto ld; | |
8967 | } | |
252b5132 | 8968 | s = "lw"; |
252b5132 RH |
8969 | goto ldd_std; |
8970 | ||
8971 | case M_SD_AB: | |
df58fc94 | 8972 | fmt = "t,o(b)"; |
ca4e0257 | 8973 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
8974 | { |
8975 | s = "sd"; | |
df58fc94 | 8976 | goto ld_st; |
252b5132 | 8977 | } |
252b5132 | 8978 | s = "sw"; |
252b5132 RH |
8979 | |
8980 | ldd_std: | |
8981 | if (offset_expr.X_op != O_symbol | |
8982 | && offset_expr.X_op != O_constant) | |
8983 | { | |
f71d0d44 | 8984 | as_bad (_("Expression too complex")); |
252b5132 RH |
8985 | offset_expr.X_op = O_constant; |
8986 | } | |
8987 | ||
2051e8c4 MR |
8988 | if (HAVE_32BIT_ADDRESSES |
8989 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
8990 | { |
8991 | char value [32]; | |
8992 | ||
8993 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 8994 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 8995 | } |
2051e8c4 | 8996 | |
252b5132 RH |
8997 | /* Even on a big endian machine $fn comes before $fn+1. We have |
8998 | to adjust when loading from memory. We set coproc if we must | |
8999 | load $fn+1 first. */ | |
bdaaa2e1 | 9000 | /* Itbl support may require additional care here. */ |
90ecf173 | 9001 | if (!target_big_endian) |
252b5132 RH |
9002 | coproc = 0; |
9003 | ||
90ecf173 | 9004 | if (mips_pic == NO_PIC || offset_expr.X_op == O_constant) |
252b5132 RH |
9005 | { |
9006 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 TS |
9007 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
9008 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
9009 | If we have a base register, we use this |
9010 | addu $at,$breg,$gp | |
cdf6fd85 TS |
9011 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
9012 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
9013 | If this is not a GP relative symbol, we want |
9014 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
9015 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
9016 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
9017 | If there is a base register, we add it to $at after the | |
9018 | lui instruction. If there is a constant, we always use | |
9019 | the last case. */ | |
39a59cf8 MR |
9020 | if (offset_expr.X_op == O_symbol |
9021 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 9022 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 9023 | { |
4d7206a2 | 9024 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
9025 | if (breg == 0) |
9026 | { | |
c9914766 | 9027 | tempreg = mips_gp_register; |
252b5132 RH |
9028 | } |
9029 | else | |
9030 | { | |
67c0d1eb | 9031 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 9032 | AT, breg, mips_gp_register); |
252b5132 | 9033 | tempreg = AT; |
252b5132 RH |
9034 | used_at = 1; |
9035 | } | |
9036 | ||
beae10d5 | 9037 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9038 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 9039 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
9040 | offset_expr.X_add_number += 4; |
9041 | ||
9042 | /* Set mips_optimize to 2 to avoid inserting an | |
9043 | undesired nop. */ | |
9044 | hold_mips_optimize = mips_optimize; | |
9045 | mips_optimize = 2; | |
beae10d5 | 9046 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9047 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 9048 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
9049 | mips_optimize = hold_mips_optimize; |
9050 | ||
4d7206a2 | 9051 | relax_switch (); |
252b5132 | 9052 | |
0970e49e | 9053 | offset_expr.X_add_number -= 4; |
252b5132 | 9054 | } |
8fc2e39e | 9055 | used_at = 1; |
67c0d1eb | 9056 | macro_build_lui (&offset_expr, AT); |
252b5132 | 9057 | if (breg != 0) |
67c0d1eb | 9058 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 9059 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9060 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 9061 | BFD_RELOC_LO16, AT); |
252b5132 RH |
9062 | /* FIXME: How do we handle overflow here? */ |
9063 | offset_expr.X_add_number += 4; | |
beae10d5 | 9064 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9065 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 9066 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
9067 | if (mips_relax.sequence) |
9068 | relax_end (); | |
bdaaa2e1 | 9069 | } |
0a44bf69 | 9070 | else if (!mips_big_got) |
252b5132 | 9071 | { |
252b5132 RH |
9072 | /* If this is a reference to an external symbol, we want |
9073 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9074 | nop | |
9075 | <op> $treg,0($at) | |
9076 | <op> $treg+1,4($at) | |
9077 | Otherwise we want | |
9078 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9079 | nop | |
9080 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
9081 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
9082 | If there is a base register we add it to $at before the | |
9083 | lwc1 instructions. If there is a constant we include it | |
9084 | in the lwc1 instructions. */ | |
9085 | used_at = 1; | |
9086 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
9087 | if (expr1.X_add_number < -0x8000 |
9088 | || expr1.X_add_number >= 0x8000 - 4) | |
9089 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 9090 | load_got_offset (AT, &offset_expr); |
269137b2 | 9091 | load_delay_nop (); |
252b5132 | 9092 | if (breg != 0) |
67c0d1eb | 9093 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
9094 | |
9095 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9096 | nop. */ | |
9097 | hold_mips_optimize = mips_optimize; | |
9098 | mips_optimize = 2; | |
4d7206a2 | 9099 | |
beae10d5 | 9100 | /* Itbl support may require additional care here. */ |
4d7206a2 | 9101 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
9102 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
9103 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9104 | expr1.X_add_number += 4; |
67c0d1eb RS |
9105 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
9106 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9107 | relax_switch (); |
67c0d1eb RS |
9108 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
9109 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9110 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
9111 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
9112 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9113 | relax_end (); |
252b5132 | 9114 | |
4d7206a2 | 9115 | mips_optimize = hold_mips_optimize; |
252b5132 | 9116 | } |
0a44bf69 | 9117 | else if (mips_big_got) |
252b5132 | 9118 | { |
67c0d1eb | 9119 | int gpdelay; |
252b5132 RH |
9120 | |
9121 | /* If this is a reference to an external symbol, we want | |
9122 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
9123 | addu $at,$at,$gp | |
9124 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
9125 | nop | |
9126 | <op> $treg,0($at) | |
9127 | <op> $treg+1,4($at) | |
9128 | Otherwise we want | |
9129 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9130 | nop | |
9131 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
9132 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
9133 | If there is a base register we add it to $at before the | |
9134 | lwc1 instructions. If there is a constant we include it | |
9135 | in the lwc1 instructions. */ | |
9136 | used_at = 1; | |
9137 | expr1.X_add_number = offset_expr.X_add_number; | |
9138 | offset_expr.X_add_number = 0; | |
9139 | if (expr1.X_add_number < -0x8000 | |
9140 | || expr1.X_add_number >= 0x8000 - 4) | |
9141 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 9142 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 9143 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 9144 | macro_build (&offset_expr, "lui", LUI_FMT, |
67c0d1eb RS |
9145 | AT, BFD_RELOC_MIPS_GOT_HI16); |
9146 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 9147 | AT, AT, mips_gp_register); |
67c0d1eb | 9148 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 9149 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 9150 | load_delay_nop (); |
252b5132 | 9151 | if (breg != 0) |
67c0d1eb | 9152 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 9153 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9154 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 9155 | BFD_RELOC_LO16, AT); |
252b5132 RH |
9156 | expr1.X_add_number += 4; |
9157 | ||
9158 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9159 | nop. */ | |
9160 | hold_mips_optimize = mips_optimize; | |
9161 | mips_optimize = 2; | |
beae10d5 | 9162 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9163 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 9164 | BFD_RELOC_LO16, AT); |
252b5132 RH |
9165 | mips_optimize = hold_mips_optimize; |
9166 | expr1.X_add_number -= 4; | |
9167 | ||
4d7206a2 RS |
9168 | relax_switch (); |
9169 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
9170 | if (gpdelay) |
9171 | macro_build (NULL, "nop", ""); | |
9172 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
9173 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 9174 | load_delay_nop (); |
252b5132 | 9175 | if (breg != 0) |
67c0d1eb | 9176 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 9177 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
9178 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
9179 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9180 | offset_expr.X_add_number += 4; |
252b5132 RH |
9181 | |
9182 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9183 | nop. */ | |
9184 | hold_mips_optimize = mips_optimize; | |
9185 | mips_optimize = 2; | |
beae10d5 | 9186 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
9187 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
9188 | BFD_RELOC_LO16, AT); | |
252b5132 | 9189 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 9190 | relax_end (); |
252b5132 | 9191 | } |
252b5132 RH |
9192 | else |
9193 | abort (); | |
9194 | ||
252b5132 RH |
9195 | break; |
9196 | ||
9197 | case M_LD_OB: | |
704897fb | 9198 | s = HAVE_64BIT_GPRS ? "ld" : "lw"; |
252b5132 RH |
9199 | goto sd_ob; |
9200 | case M_SD_OB: | |
704897fb | 9201 | s = HAVE_64BIT_GPRS ? "sd" : "sw"; |
252b5132 | 9202 | sd_ob: |
4614d845 MR |
9203 | macro_build (&offset_expr, s, "t,o(b)", treg, |
9204 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2], | |
9205 | breg); | |
704897fb MR |
9206 | if (!HAVE_64BIT_GPRS) |
9207 | { | |
9208 | offset_expr.X_add_number += 4; | |
9209 | macro_build (&offset_expr, s, "t,o(b)", treg + 1, | |
4614d845 MR |
9210 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2], |
9211 | breg); | |
704897fb | 9212 | } |
8fc2e39e | 9213 | break; |
252b5132 | 9214 | |
dd6a37e7 AP |
9215 | |
9216 | case M_SAA_AB: | |
9217 | ab = 1; | |
9218 | case M_SAA_OB: | |
9219 | s = "saa"; | |
9220 | off0 = 1; | |
9221 | fmt = "t,(b)"; | |
9222 | goto ld_st; | |
9223 | case M_SAAD_AB: | |
9224 | ab = 1; | |
9225 | case M_SAAD_OB: | |
9226 | s = "saad"; | |
9227 | off0 = 1; | |
9228 | fmt = "t,(b)"; | |
9229 | goto ld_st; | |
9230 | ||
252b5132 RH |
9231 | /* New code added to support COPZ instructions. |
9232 | This code builds table entries out of the macros in mip_opcodes. | |
9233 | R4000 uses interlocks to handle coproc delays. | |
9234 | Other chips (like the R3000) require nops to be inserted for delays. | |
9235 | ||
f72c8c98 | 9236 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
9237 | In order to fill delay slots for non-interlocked chips, |
9238 | we must have a way to specify delays based on the coprocessor. | |
9239 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
9240 | What are the side-effects of the cop instruction? | |
9241 | What cache support might we have and what are its effects? | |
9242 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 9243 | What registers are read/set/modified? |
252b5132 RH |
9244 | |
9245 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 9246 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
9247 | |
9248 | case M_COP0: | |
9249 | s = "c0"; | |
9250 | goto copz; | |
9251 | case M_COP1: | |
9252 | s = "c1"; | |
9253 | goto copz; | |
9254 | case M_COP2: | |
9255 | s = "c2"; | |
9256 | goto copz; | |
9257 | case M_COP3: | |
9258 | s = "c3"; | |
9259 | copz: | |
df58fc94 | 9260 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
9261 | /* For now we just do C (same as Cz). The parameter will be |
9262 | stored in insn_opcode by mips_ip. */ | |
67c0d1eb | 9263 | macro_build (NULL, s, "C", ip->insn_opcode); |
8fc2e39e | 9264 | break; |
252b5132 | 9265 | |
ea1fb5dc | 9266 | case M_MOVE: |
67c0d1eb | 9267 | move_register (dreg, sreg); |
8fc2e39e | 9268 | break; |
ea1fb5dc | 9269 | |
252b5132 RH |
9270 | case M_DMUL: |
9271 | dbl = 1; | |
9272 | case M_MUL: | |
67c0d1eb | 9273 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", sreg, treg); |
df58fc94 | 9274 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
8fc2e39e | 9275 | break; |
252b5132 RH |
9276 | |
9277 | case M_DMUL_I: | |
9278 | dbl = 1; | |
9279 | case M_MUL_I: | |
9280 | /* The MIPS assembler some times generates shifts and adds. I'm | |
9281 | not trying to be that fancy. GCC should do this for us | |
9282 | anyway. */ | |
8fc2e39e | 9283 | used_at = 1; |
67c0d1eb RS |
9284 | load_register (AT, &imm_expr, dbl); |
9285 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, AT); | |
df58fc94 | 9286 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
252b5132 RH |
9287 | break; |
9288 | ||
9289 | case M_DMULO_I: | |
9290 | dbl = 1; | |
9291 | case M_MULO_I: | |
9292 | imm = 1; | |
9293 | goto do_mulo; | |
9294 | ||
9295 | case M_DMULO: | |
9296 | dbl = 1; | |
9297 | case M_MULO: | |
9298 | do_mulo: | |
7d10b47d | 9299 | start_noreorder (); |
8fc2e39e | 9300 | used_at = 1; |
252b5132 | 9301 | if (imm) |
67c0d1eb RS |
9302 | load_register (AT, &imm_expr, dbl); |
9303 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); | |
df58fc94 RS |
9304 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
9305 | macro_build (NULL, dbl ? "dsra32" : "sra", SHFT_FMT, dreg, dreg, RA); | |
9306 | macro_build (NULL, "mfhi", MFHL_FMT, AT); | |
252b5132 | 9307 | if (mips_trap) |
df58fc94 | 9308 | macro_build (NULL, "tne", TRAP_FMT, dreg, AT, 6); |
252b5132 RH |
9309 | else |
9310 | { | |
df58fc94 RS |
9311 | if (mips_opts.micromips) |
9312 | micromips_label_expr (&label_expr); | |
9313 | else | |
9314 | label_expr.X_add_number = 8; | |
9315 | macro_build (&label_expr, "beq", "s,t,p", dreg, AT); | |
a605d2b3 | 9316 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
9317 | macro_build (NULL, "break", BRK_FMT, 6); |
9318 | if (mips_opts.micromips) | |
9319 | micromips_add_label (); | |
252b5132 | 9320 | } |
7d10b47d | 9321 | end_noreorder (); |
df58fc94 | 9322 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
252b5132 RH |
9323 | break; |
9324 | ||
9325 | case M_DMULOU_I: | |
9326 | dbl = 1; | |
9327 | case M_MULOU_I: | |
9328 | imm = 1; | |
9329 | goto do_mulou; | |
9330 | ||
9331 | case M_DMULOU: | |
9332 | dbl = 1; | |
9333 | case M_MULOU: | |
9334 | do_mulou: | |
7d10b47d | 9335 | start_noreorder (); |
8fc2e39e | 9336 | used_at = 1; |
252b5132 | 9337 | if (imm) |
67c0d1eb RS |
9338 | load_register (AT, &imm_expr, dbl); |
9339 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
17a2f251 | 9340 | sreg, imm ? AT : treg); |
df58fc94 RS |
9341 | macro_build (NULL, "mfhi", MFHL_FMT, AT); |
9342 | macro_build (NULL, "mflo", MFHL_FMT, dreg); | |
252b5132 | 9343 | if (mips_trap) |
df58fc94 | 9344 | macro_build (NULL, "tne", TRAP_FMT, AT, ZERO, 6); |
252b5132 RH |
9345 | else |
9346 | { | |
df58fc94 RS |
9347 | if (mips_opts.micromips) |
9348 | micromips_label_expr (&label_expr); | |
9349 | else | |
9350 | label_expr.X_add_number = 8; | |
9351 | macro_build (&label_expr, "beq", "s,t,p", AT, ZERO); | |
a605d2b3 | 9352 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
9353 | macro_build (NULL, "break", BRK_FMT, 6); |
9354 | if (mips_opts.micromips) | |
9355 | micromips_add_label (); | |
252b5132 | 9356 | } |
7d10b47d | 9357 | end_noreorder (); |
252b5132 RH |
9358 | break; |
9359 | ||
771c7ce4 | 9360 | case M_DROL: |
fef14a42 | 9361 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
9362 | { |
9363 | if (dreg == sreg) | |
9364 | { | |
9365 | tempreg = AT; | |
9366 | used_at = 1; | |
9367 | } | |
9368 | else | |
9369 | { | |
9370 | tempreg = dreg; | |
82dd0097 | 9371 | } |
67c0d1eb RS |
9372 | macro_build (NULL, "dnegu", "d,w", tempreg, treg); |
9373 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 9374 | break; |
82dd0097 | 9375 | } |
8fc2e39e | 9376 | used_at = 1; |
c80c840e | 9377 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9378 | macro_build (NULL, "dsrlv", "d,t,s", AT, sreg, AT); |
9379 | macro_build (NULL, "dsllv", "d,t,s", dreg, sreg, treg); | |
9380 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
9381 | break; |
9382 | ||
252b5132 | 9383 | case M_ROL: |
fef14a42 | 9384 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 CD |
9385 | { |
9386 | if (dreg == sreg) | |
9387 | { | |
9388 | tempreg = AT; | |
9389 | used_at = 1; | |
9390 | } | |
9391 | else | |
9392 | { | |
9393 | tempreg = dreg; | |
82dd0097 | 9394 | } |
67c0d1eb RS |
9395 | macro_build (NULL, "negu", "d,w", tempreg, treg); |
9396 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 9397 | break; |
82dd0097 | 9398 | } |
8fc2e39e | 9399 | used_at = 1; |
c80c840e | 9400 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9401 | macro_build (NULL, "srlv", "d,t,s", AT, sreg, AT); |
9402 | macro_build (NULL, "sllv", "d,t,s", dreg, sreg, treg); | |
9403 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9404 | break; |
9405 | ||
771c7ce4 TS |
9406 | case M_DROL_I: |
9407 | { | |
9408 | unsigned int rot; | |
91d6fa6a NC |
9409 | char *l; |
9410 | char *rr; | |
771c7ce4 TS |
9411 | |
9412 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9413 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9414 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 9415 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
9416 | { |
9417 | rot = (64 - rot) & 0x3f; | |
9418 | if (rot >= 32) | |
df58fc94 | 9419 | macro_build (NULL, "dror32", SHFT_FMT, dreg, sreg, rot - 32); |
60b63b72 | 9420 | else |
df58fc94 | 9421 | macro_build (NULL, "dror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9422 | break; |
60b63b72 | 9423 | } |
483fc7cd | 9424 | if (rot == 0) |
483fc7cd | 9425 | { |
df58fc94 | 9426 | macro_build (NULL, "dsrl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9427 | break; |
483fc7cd | 9428 | } |
82dd0097 | 9429 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
91d6fa6a | 9430 | rr = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 | 9431 | rot &= 0x1f; |
8fc2e39e | 9432 | used_at = 1; |
df58fc94 RS |
9433 | macro_build (NULL, l, SHFT_FMT, AT, sreg, rot); |
9434 | macro_build (NULL, rr, SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9435 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9436 | } |
9437 | break; | |
9438 | ||
252b5132 | 9439 | case M_ROL_I: |
771c7ce4 TS |
9440 | { |
9441 | unsigned int rot; | |
9442 | ||
9443 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9444 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9445 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 9446 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 9447 | { |
df58fc94 | 9448 | macro_build (NULL, "ror", SHFT_FMT, dreg, sreg, (32 - rot) & 0x1f); |
8fc2e39e | 9449 | break; |
60b63b72 | 9450 | } |
483fc7cd | 9451 | if (rot == 0) |
483fc7cd | 9452 | { |
df58fc94 | 9453 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9454 | break; |
483fc7cd | 9455 | } |
8fc2e39e | 9456 | used_at = 1; |
df58fc94 RS |
9457 | macro_build (NULL, "sll", SHFT_FMT, AT, sreg, rot); |
9458 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9459 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9460 | } |
9461 | break; | |
9462 | ||
9463 | case M_DROR: | |
fef14a42 | 9464 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 9465 | { |
67c0d1eb | 9466 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 9467 | break; |
82dd0097 | 9468 | } |
8fc2e39e | 9469 | used_at = 1; |
c80c840e | 9470 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9471 | macro_build (NULL, "dsllv", "d,t,s", AT, sreg, AT); |
9472 | macro_build (NULL, "dsrlv", "d,t,s", dreg, sreg, treg); | |
9473 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9474 | break; |
9475 | ||
9476 | case M_ROR: | |
fef14a42 | 9477 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 9478 | { |
67c0d1eb | 9479 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 9480 | break; |
82dd0097 | 9481 | } |
8fc2e39e | 9482 | used_at = 1; |
c80c840e | 9483 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9484 | macro_build (NULL, "sllv", "d,t,s", AT, sreg, AT); |
9485 | macro_build (NULL, "srlv", "d,t,s", dreg, sreg, treg); | |
9486 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9487 | break; |
9488 | ||
771c7ce4 TS |
9489 | case M_DROR_I: |
9490 | { | |
9491 | unsigned int rot; | |
91d6fa6a NC |
9492 | char *l; |
9493 | char *rr; | |
771c7ce4 TS |
9494 | |
9495 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9496 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9497 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 9498 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
9499 | { |
9500 | if (rot >= 32) | |
df58fc94 | 9501 | macro_build (NULL, "dror32", SHFT_FMT, dreg, sreg, rot - 32); |
82dd0097 | 9502 | else |
df58fc94 | 9503 | macro_build (NULL, "dror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9504 | break; |
82dd0097 | 9505 | } |
483fc7cd | 9506 | if (rot == 0) |
483fc7cd | 9507 | { |
df58fc94 | 9508 | macro_build (NULL, "dsrl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9509 | break; |
483fc7cd | 9510 | } |
91d6fa6a | 9511 | rr = (rot < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 CD |
9512 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; |
9513 | rot &= 0x1f; | |
8fc2e39e | 9514 | used_at = 1; |
df58fc94 RS |
9515 | macro_build (NULL, rr, SHFT_FMT, AT, sreg, rot); |
9516 | macro_build (NULL, l, SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9517 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9518 | } |
9519 | break; | |
9520 | ||
252b5132 | 9521 | case M_ROR_I: |
771c7ce4 TS |
9522 | { |
9523 | unsigned int rot; | |
9524 | ||
9525 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9526 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9527 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 9528 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 9529 | { |
df58fc94 | 9530 | macro_build (NULL, "ror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9531 | break; |
82dd0097 | 9532 | } |
483fc7cd | 9533 | if (rot == 0) |
483fc7cd | 9534 | { |
df58fc94 | 9535 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9536 | break; |
483fc7cd | 9537 | } |
8fc2e39e | 9538 | used_at = 1; |
df58fc94 RS |
9539 | macro_build (NULL, "srl", SHFT_FMT, AT, sreg, rot); |
9540 | macro_build (NULL, "sll", SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9541 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 | 9542 | } |
252b5132 RH |
9543 | break; |
9544 | ||
252b5132 RH |
9545 | case M_SEQ: |
9546 | if (sreg == 0) | |
67c0d1eb | 9547 | macro_build (&expr1, "sltiu", "t,r,j", dreg, treg, BFD_RELOC_LO16); |
252b5132 | 9548 | else if (treg == 0) |
67c0d1eb | 9549 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9550 | else |
9551 | { | |
67c0d1eb RS |
9552 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
9553 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 | 9554 | } |
8fc2e39e | 9555 | break; |
252b5132 RH |
9556 | |
9557 | case M_SEQ_I: | |
9558 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
9559 | { | |
67c0d1eb | 9560 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9561 | break; |
252b5132 RH |
9562 | } |
9563 | if (sreg == 0) | |
9564 | { | |
9565 | as_warn (_("Instruction %s: result is always false"), | |
9566 | ip->insn_mo->name); | |
67c0d1eb | 9567 | move_register (dreg, 0); |
8fc2e39e | 9568 | break; |
252b5132 | 9569 | } |
dd3cbb7e NC |
9570 | if (CPU_HAS_SEQ (mips_opts.arch) |
9571 | && -512 <= imm_expr.X_add_number | |
9572 | && imm_expr.X_add_number < 512) | |
9573 | { | |
9574 | macro_build (NULL, "seqi", "t,r,+Q", dreg, sreg, | |
750bdd57 | 9575 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
9576 | break; |
9577 | } | |
252b5132 RH |
9578 | if (imm_expr.X_op == O_constant |
9579 | && imm_expr.X_add_number >= 0 | |
9580 | && imm_expr.X_add_number < 0x10000) | |
9581 | { | |
67c0d1eb | 9582 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9583 | } |
9584 | else if (imm_expr.X_op == O_constant | |
9585 | && imm_expr.X_add_number > -0x8000 | |
9586 | && imm_expr.X_add_number < 0) | |
9587 | { | |
9588 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9589 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 9590 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 9591 | } |
dd3cbb7e NC |
9592 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
9593 | { | |
9594 | used_at = 1; | |
9595 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
9596 | macro_build (NULL, "seq", "d,v,t", dreg, sreg, AT); | |
9597 | break; | |
9598 | } | |
252b5132 RH |
9599 | else |
9600 | { | |
67c0d1eb RS |
9601 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9602 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9603 | used_at = 1; |
9604 | } | |
67c0d1eb | 9605 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 9606 | break; |
252b5132 RH |
9607 | |
9608 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
9609 | s = "slt"; | |
9610 | goto sge; | |
9611 | case M_SGEU: | |
9612 | s = "sltu"; | |
9613 | sge: | |
67c0d1eb RS |
9614 | macro_build (NULL, s, "d,v,t", dreg, sreg, treg); |
9615 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 9616 | break; |
252b5132 RH |
9617 | |
9618 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
9619 | case M_SGEU_I: | |
9620 | if (imm_expr.X_op == O_constant | |
9621 | && imm_expr.X_add_number >= -0x8000 | |
9622 | && imm_expr.X_add_number < 0x8000) | |
9623 | { | |
67c0d1eb RS |
9624 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
9625 | dreg, sreg, BFD_RELOC_LO16); | |
252b5132 RH |
9626 | } |
9627 | else | |
9628 | { | |
67c0d1eb RS |
9629 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9630 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", | |
9631 | dreg, sreg, AT); | |
252b5132 RH |
9632 | used_at = 1; |
9633 | } | |
67c0d1eb | 9634 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 9635 | break; |
252b5132 RH |
9636 | |
9637 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
9638 | s = "slt"; | |
9639 | goto sgt; | |
9640 | case M_SGTU: | |
9641 | s = "sltu"; | |
9642 | sgt: | |
67c0d1eb | 9643 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
8fc2e39e | 9644 | break; |
252b5132 RH |
9645 | |
9646 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
9647 | s = "slt"; | |
9648 | goto sgti; | |
9649 | case M_SGTU_I: | |
9650 | s = "sltu"; | |
9651 | sgti: | |
8fc2e39e | 9652 | used_at = 1; |
67c0d1eb RS |
9653 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9654 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
252b5132 RH |
9655 | break; |
9656 | ||
2396cfb9 | 9657 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
9658 | s = "slt"; |
9659 | goto sle; | |
9660 | case M_SLEU: | |
9661 | s = "sltu"; | |
9662 | sle: | |
67c0d1eb RS |
9663 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
9664 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 9665 | break; |
252b5132 | 9666 | |
2396cfb9 | 9667 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
9668 | s = "slt"; |
9669 | goto slei; | |
9670 | case M_SLEU_I: | |
9671 | s = "sltu"; | |
9672 | slei: | |
8fc2e39e | 9673 | used_at = 1; |
67c0d1eb RS |
9674 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9675 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
9676 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 RH |
9677 | break; |
9678 | ||
9679 | case M_SLT_I: | |
9680 | if (imm_expr.X_op == O_constant | |
9681 | && imm_expr.X_add_number >= -0x8000 | |
9682 | && imm_expr.X_add_number < 0x8000) | |
9683 | { | |
67c0d1eb | 9684 | macro_build (&imm_expr, "slti", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9685 | break; |
252b5132 | 9686 | } |
8fc2e39e | 9687 | used_at = 1; |
67c0d1eb RS |
9688 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9689 | macro_build (NULL, "slt", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9690 | break; |
9691 | ||
9692 | case M_SLTU_I: | |
9693 | if (imm_expr.X_op == O_constant | |
9694 | && imm_expr.X_add_number >= -0x8000 | |
9695 | && imm_expr.X_add_number < 0x8000) | |
9696 | { | |
67c0d1eb | 9697 | macro_build (&imm_expr, "sltiu", "t,r,j", dreg, sreg, |
17a2f251 | 9698 | BFD_RELOC_LO16); |
8fc2e39e | 9699 | break; |
252b5132 | 9700 | } |
8fc2e39e | 9701 | used_at = 1; |
67c0d1eb RS |
9702 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9703 | macro_build (NULL, "sltu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9704 | break; |
9705 | ||
9706 | case M_SNE: | |
9707 | if (sreg == 0) | |
67c0d1eb | 9708 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, treg); |
252b5132 | 9709 | else if (treg == 0) |
67c0d1eb | 9710 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
9711 | else |
9712 | { | |
67c0d1eb RS |
9713 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
9714 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); | |
252b5132 | 9715 | } |
8fc2e39e | 9716 | break; |
252b5132 RH |
9717 | |
9718 | case M_SNE_I: | |
9719 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
9720 | { | |
67c0d1eb | 9721 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
8fc2e39e | 9722 | break; |
252b5132 RH |
9723 | } |
9724 | if (sreg == 0) | |
9725 | { | |
9726 | as_warn (_("Instruction %s: result is always true"), | |
9727 | ip->insn_mo->name); | |
67c0d1eb RS |
9728 | macro_build (&expr1, HAVE_32BIT_GPRS ? "addiu" : "daddiu", "t,r,j", |
9729 | dreg, 0, BFD_RELOC_LO16); | |
8fc2e39e | 9730 | break; |
252b5132 | 9731 | } |
dd3cbb7e NC |
9732 | if (CPU_HAS_SEQ (mips_opts.arch) |
9733 | && -512 <= imm_expr.X_add_number | |
9734 | && imm_expr.X_add_number < 512) | |
9735 | { | |
9736 | macro_build (NULL, "snei", "t,r,+Q", dreg, sreg, | |
750bdd57 | 9737 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
9738 | break; |
9739 | } | |
252b5132 RH |
9740 | if (imm_expr.X_op == O_constant |
9741 | && imm_expr.X_add_number >= 0 | |
9742 | && imm_expr.X_add_number < 0x10000) | |
9743 | { | |
67c0d1eb | 9744 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9745 | } |
9746 | else if (imm_expr.X_op == O_constant | |
9747 | && imm_expr.X_add_number > -0x8000 | |
9748 | && imm_expr.X_add_number < 0) | |
9749 | { | |
9750 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9751 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 9752 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 9753 | } |
dd3cbb7e NC |
9754 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
9755 | { | |
9756 | used_at = 1; | |
9757 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
9758 | macro_build (NULL, "sne", "d,v,t", dreg, sreg, AT); | |
9759 | break; | |
9760 | } | |
252b5132 RH |
9761 | else |
9762 | { | |
67c0d1eb RS |
9763 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9764 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9765 | used_at = 1; |
9766 | } | |
67c0d1eb | 9767 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); |
8fc2e39e | 9768 | break; |
252b5132 | 9769 | |
df58fc94 RS |
9770 | case M_SUB_I: |
9771 | s = "addi"; | |
9772 | s2 = "sub"; | |
9773 | goto do_subi; | |
9774 | case M_SUBU_I: | |
9775 | s = "addiu"; | |
9776 | s2 = "subu"; | |
9777 | goto do_subi; | |
252b5132 RH |
9778 | case M_DSUB_I: |
9779 | dbl = 1; | |
df58fc94 RS |
9780 | s = "daddi"; |
9781 | s2 = "dsub"; | |
9782 | if (!mips_opts.micromips) | |
9783 | goto do_subi; | |
252b5132 | 9784 | if (imm_expr.X_op == O_constant |
df58fc94 RS |
9785 | && imm_expr.X_add_number > -0x200 |
9786 | && imm_expr.X_add_number <= 0x200) | |
252b5132 | 9787 | { |
df58fc94 | 9788 | macro_build (NULL, s, "t,r,.", dreg, sreg, -imm_expr.X_add_number); |
8fc2e39e | 9789 | break; |
252b5132 | 9790 | } |
df58fc94 | 9791 | goto do_subi_i; |
252b5132 RH |
9792 | case M_DSUBU_I: |
9793 | dbl = 1; | |
df58fc94 RS |
9794 | s = "daddiu"; |
9795 | s2 = "dsubu"; | |
9796 | do_subi: | |
252b5132 RH |
9797 | if (imm_expr.X_op == O_constant |
9798 | && imm_expr.X_add_number > -0x8000 | |
9799 | && imm_expr.X_add_number <= 0x8000) | |
9800 | { | |
9801 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
df58fc94 | 9802 | macro_build (&imm_expr, s, "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9803 | break; |
252b5132 | 9804 | } |
df58fc94 | 9805 | do_subi_i: |
8fc2e39e | 9806 | used_at = 1; |
67c0d1eb | 9807 | load_register (AT, &imm_expr, dbl); |
df58fc94 | 9808 | macro_build (NULL, s2, "d,v,t", dreg, sreg, AT); |
252b5132 RH |
9809 | break; |
9810 | ||
9811 | case M_TEQ_I: | |
9812 | s = "teq"; | |
9813 | goto trap; | |
9814 | case M_TGE_I: | |
9815 | s = "tge"; | |
9816 | goto trap; | |
9817 | case M_TGEU_I: | |
9818 | s = "tgeu"; | |
9819 | goto trap; | |
9820 | case M_TLT_I: | |
9821 | s = "tlt"; | |
9822 | goto trap; | |
9823 | case M_TLTU_I: | |
9824 | s = "tltu"; | |
9825 | goto trap; | |
9826 | case M_TNE_I: | |
9827 | s = "tne"; | |
9828 | trap: | |
8fc2e39e | 9829 | used_at = 1; |
67c0d1eb RS |
9830 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9831 | macro_build (NULL, s, "s,t", sreg, AT); | |
252b5132 RH |
9832 | break; |
9833 | ||
252b5132 | 9834 | case M_TRUNCWS: |
43841e91 | 9835 | case M_TRUNCWD: |
df58fc94 | 9836 | gas_assert (!mips_opts.micromips); |
9c2799c2 | 9837 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 9838 | used_at = 1; |
252b5132 RH |
9839 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
9840 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
9841 | ||
9842 | /* | |
9843 | * Is the double cfc1 instruction a bug in the mips assembler; | |
9844 | * or is there a reason for it? | |
9845 | */ | |
7d10b47d | 9846 | start_noreorder (); |
67c0d1eb RS |
9847 | macro_build (NULL, "cfc1", "t,G", treg, RA); |
9848 | macro_build (NULL, "cfc1", "t,G", treg, RA); | |
9849 | macro_build (NULL, "nop", ""); | |
252b5132 | 9850 | expr1.X_add_number = 3; |
67c0d1eb | 9851 | macro_build (&expr1, "ori", "t,r,i", AT, treg, BFD_RELOC_LO16); |
252b5132 | 9852 | expr1.X_add_number = 2; |
67c0d1eb RS |
9853 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
9854 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
9855 | macro_build (NULL, "nop", ""); | |
9856 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
9857 | dreg, sreg); | |
9858 | macro_build (NULL, "ctc1", "t,G", treg, RA); | |
9859 | macro_build (NULL, "nop", ""); | |
7d10b47d | 9860 | end_noreorder (); |
252b5132 RH |
9861 | break; |
9862 | ||
df58fc94 RS |
9863 | case M_ULH_A: |
9864 | ab = 1; | |
252b5132 RH |
9865 | case M_ULH: |
9866 | s = "lb"; | |
df58fc94 RS |
9867 | s2 = "lbu"; |
9868 | off = 1; | |
9869 | goto uld_st; | |
9870 | case M_ULHU_A: | |
9871 | ab = 1; | |
252b5132 RH |
9872 | case M_ULHU: |
9873 | s = "lbu"; | |
df58fc94 RS |
9874 | s2 = "lbu"; |
9875 | off = 1; | |
9876 | goto uld_st; | |
9877 | case M_ULW_A: | |
9878 | ab = 1; | |
9879 | case M_ULW: | |
9880 | s = "lwl"; | |
9881 | s2 = "lwr"; | |
9882 | off12 = mips_opts.micromips; | |
9883 | off = 3; | |
9884 | goto uld_st; | |
9885 | case M_ULD_A: | |
9886 | ab = 1; | |
252b5132 RH |
9887 | case M_ULD: |
9888 | s = "ldl"; | |
9889 | s2 = "ldr"; | |
df58fc94 | 9890 | off12 = mips_opts.micromips; |
252b5132 | 9891 | off = 7; |
df58fc94 RS |
9892 | goto uld_st; |
9893 | case M_USH_A: | |
9894 | ab = 1; | |
9895 | case M_USH: | |
9896 | s = "sb"; | |
9897 | s2 = "sb"; | |
9898 | off = 1; | |
9899 | ust = 1; | |
9900 | goto uld_st; | |
9901 | case M_USW_A: | |
9902 | ab = 1; | |
9903 | case M_USW: | |
9904 | s = "swl"; | |
9905 | s2 = "swr"; | |
9906 | off12 = mips_opts.micromips; | |
252b5132 | 9907 | off = 3; |
df58fc94 RS |
9908 | ust = 1; |
9909 | goto uld_st; | |
9910 | case M_USD_A: | |
9911 | ab = 1; | |
9912 | case M_USD: | |
9913 | s = "sdl"; | |
9914 | s2 = "sdr"; | |
9915 | off12 = mips_opts.micromips; | |
9916 | off = 7; | |
9917 | ust = 1; | |
9918 | ||
9919 | uld_st: | |
9920 | if (!ab && offset_expr.X_add_number >= 0x8000 - off) | |
f71d0d44 | 9921 | as_bad (_("Operand overflow")); |
df58fc94 RS |
9922 | |
9923 | ep = &offset_expr; | |
9924 | expr1.X_add_number = 0; | |
9925 | if (ab) | |
9926 | { | |
9927 | used_at = 1; | |
9928 | tempreg = AT; | |
9929 | load_address (tempreg, ep, &used_at); | |
9930 | if (breg != 0) | |
9931 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
9932 | tempreg, tempreg, breg); | |
9933 | breg = tempreg; | |
9934 | tempreg = treg; | |
9935 | ep = &expr1; | |
9936 | } | |
9937 | else if (off12 | |
9938 | && (offset_expr.X_op != O_constant | |
9939 | || !IS_SEXT_12BIT_NUM (offset_expr.X_add_number) | |
9940 | || !IS_SEXT_12BIT_NUM (offset_expr.X_add_number + off))) | |
9941 | { | |
9942 | used_at = 1; | |
9943 | tempreg = AT; | |
9944 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", tempreg, breg, | |
9945 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
9946 | breg = tempreg; | |
9947 | tempreg = treg; | |
9948 | ep = &expr1; | |
9949 | } | |
9950 | else if (!ust && treg == breg) | |
8fc2e39e TS |
9951 | { |
9952 | used_at = 1; | |
9953 | tempreg = AT; | |
9954 | } | |
252b5132 | 9955 | else |
df58fc94 | 9956 | tempreg = treg; |
af22f5b2 | 9957 | |
df58fc94 RS |
9958 | if (off == 1) |
9959 | goto ulh_sh; | |
252b5132 | 9960 | |
90ecf173 | 9961 | if (!target_big_endian) |
df58fc94 RS |
9962 | ep->X_add_number += off; |
9963 | if (!off12) | |
9964 | macro_build (ep, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
252b5132 | 9965 | else |
df58fc94 RS |
9966 | macro_build (NULL, s, "t,~(b)", |
9967 | tempreg, (unsigned long) ep->X_add_number, breg); | |
9968 | ||
90ecf173 | 9969 | if (!target_big_endian) |
df58fc94 | 9970 | ep->X_add_number -= off; |
252b5132 | 9971 | else |
df58fc94 RS |
9972 | ep->X_add_number += off; |
9973 | if (!off12) | |
9974 | macro_build (ep, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
9975 | else | |
9976 | macro_build (NULL, s2, "t,~(b)", | |
9977 | tempreg, (unsigned long) ep->X_add_number, breg); | |
252b5132 | 9978 | |
df58fc94 RS |
9979 | /* If necessary, move the result in tempreg to the final destination. */ |
9980 | if (!ust && treg != tempreg) | |
9981 | { | |
9982 | /* Protect second load's delay slot. */ | |
9983 | load_delay_nop (); | |
9984 | move_register (treg, tempreg); | |
9985 | } | |
8fc2e39e | 9986 | break; |
252b5132 | 9987 | |
df58fc94 | 9988 | ulh_sh: |
d6bc6245 | 9989 | used_at = 1; |
df58fc94 RS |
9990 | if (target_big_endian == ust) |
9991 | ep->X_add_number += off; | |
9992 | tempreg = ust || ab ? treg : AT; | |
9993 | macro_build (ep, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
9994 | ||
9995 | /* For halfword transfers we need a temporary register to shuffle | |
9996 | bytes. Unfortunately for M_USH_A we have none available before | |
9997 | the next store as AT holds the base address. We deal with this | |
9998 | case by clobbering TREG and then restoring it as with ULH. */ | |
9999 | tempreg = ust == ab ? treg : AT; | |
10000 | if (ust) | |
10001 | macro_build (NULL, "srl", SHFT_FMT, tempreg, treg, 8); | |
10002 | ||
10003 | if (target_big_endian == ust) | |
10004 | ep->X_add_number -= off; | |
252b5132 | 10005 | else |
df58fc94 RS |
10006 | ep->X_add_number += off; |
10007 | macro_build (ep, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
252b5132 | 10008 | |
df58fc94 RS |
10009 | /* For M_USH_A re-retrieve the LSB. */ |
10010 | if (ust && ab) | |
10011 | { | |
10012 | if (target_big_endian) | |
10013 | ep->X_add_number += off; | |
10014 | else | |
10015 | ep->X_add_number -= off; | |
10016 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); | |
10017 | } | |
10018 | /* For ULH and M_USH_A OR the LSB in. */ | |
10019 | if (!ust || ab) | |
10020 | { | |
10021 | tempreg = !ab ? AT : treg; | |
10022 | macro_build (NULL, "sll", SHFT_FMT, tempreg, tempreg, 8); | |
10023 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
10024 | } | |
252b5132 RH |
10025 | break; |
10026 | ||
10027 | default: | |
10028 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 10029 | are added dynamically. */ |
252b5132 RH |
10030 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
10031 | break; | |
10032 | } | |
741fe287 | 10033 | if (!mips_opts.at && used_at) |
8fc2e39e | 10034 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
10035 | } |
10036 | ||
10037 | /* Implement macros in mips16 mode. */ | |
10038 | ||
10039 | static void | |
17a2f251 | 10040 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 RH |
10041 | { |
10042 | int mask; | |
10043 | int xreg, yreg, zreg, tmp; | |
252b5132 RH |
10044 | expressionS expr1; |
10045 | int dbl; | |
10046 | const char *s, *s2, *s3; | |
10047 | ||
10048 | mask = ip->insn_mo->mask; | |
10049 | ||
bf12938e RS |
10050 | xreg = MIPS16_EXTRACT_OPERAND (RX, *ip); |
10051 | yreg = MIPS16_EXTRACT_OPERAND (RY, *ip); | |
10052 | zreg = MIPS16_EXTRACT_OPERAND (RZ, *ip); | |
252b5132 | 10053 | |
252b5132 RH |
10054 | expr1.X_op = O_constant; |
10055 | expr1.X_op_symbol = NULL; | |
10056 | expr1.X_add_symbol = NULL; | |
10057 | expr1.X_add_number = 1; | |
10058 | ||
10059 | dbl = 0; | |
10060 | ||
10061 | switch (mask) | |
10062 | { | |
10063 | default: | |
10064 | internalError (); | |
10065 | ||
10066 | case M_DDIV_3: | |
10067 | dbl = 1; | |
10068 | case M_DIV_3: | |
10069 | s = "mflo"; | |
10070 | goto do_div3; | |
10071 | case M_DREM_3: | |
10072 | dbl = 1; | |
10073 | case M_REM_3: | |
10074 | s = "mfhi"; | |
10075 | do_div3: | |
7d10b47d | 10076 | start_noreorder (); |
67c0d1eb | 10077 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", xreg, yreg); |
252b5132 | 10078 | expr1.X_add_number = 2; |
67c0d1eb RS |
10079 | macro_build (&expr1, "bnez", "x,p", yreg); |
10080 | macro_build (NULL, "break", "6", 7); | |
bdaaa2e1 | 10081 | |
252b5132 RH |
10082 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
10083 | since that causes an overflow. We should do that as well, | |
10084 | but I don't see how to do the comparisons without a temporary | |
10085 | register. */ | |
7d10b47d | 10086 | end_noreorder (); |
67c0d1eb | 10087 | macro_build (NULL, s, "x", zreg); |
252b5132 RH |
10088 | break; |
10089 | ||
10090 | case M_DIVU_3: | |
10091 | s = "divu"; | |
10092 | s2 = "mflo"; | |
10093 | goto do_divu3; | |
10094 | case M_REMU_3: | |
10095 | s = "divu"; | |
10096 | s2 = "mfhi"; | |
10097 | goto do_divu3; | |
10098 | case M_DDIVU_3: | |
10099 | s = "ddivu"; | |
10100 | s2 = "mflo"; | |
10101 | goto do_divu3; | |
10102 | case M_DREMU_3: | |
10103 | s = "ddivu"; | |
10104 | s2 = "mfhi"; | |
10105 | do_divu3: | |
7d10b47d | 10106 | start_noreorder (); |
67c0d1eb | 10107 | macro_build (NULL, s, "0,x,y", xreg, yreg); |
252b5132 | 10108 | expr1.X_add_number = 2; |
67c0d1eb RS |
10109 | macro_build (&expr1, "bnez", "x,p", yreg); |
10110 | macro_build (NULL, "break", "6", 7); | |
7d10b47d | 10111 | end_noreorder (); |
67c0d1eb | 10112 | macro_build (NULL, s2, "x", zreg); |
252b5132 RH |
10113 | break; |
10114 | ||
10115 | case M_DMUL: | |
10116 | dbl = 1; | |
10117 | case M_MUL: | |
67c0d1eb RS |
10118 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
10119 | macro_build (NULL, "mflo", "x", zreg); | |
8fc2e39e | 10120 | break; |
252b5132 RH |
10121 | |
10122 | case M_DSUBU_I: | |
10123 | dbl = 1; | |
10124 | goto do_subu; | |
10125 | case M_SUBU_I: | |
10126 | do_subu: | |
10127 | if (imm_expr.X_op != O_constant) | |
10128 | as_bad (_("Unsupported large constant")); | |
10129 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 10130 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
10131 | break; |
10132 | ||
10133 | case M_SUBU_I_2: | |
10134 | if (imm_expr.X_op != O_constant) | |
10135 | as_bad (_("Unsupported large constant")); | |
10136 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 10137 | macro_build (&imm_expr, "addiu", "x,k", xreg); |
252b5132 RH |
10138 | break; |
10139 | ||
10140 | case M_DSUBU_I_2: | |
10141 | if (imm_expr.X_op != O_constant) | |
10142 | as_bad (_("Unsupported large constant")); | |
10143 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 10144 | macro_build (&imm_expr, "daddiu", "y,j", yreg); |
252b5132 RH |
10145 | break; |
10146 | ||
10147 | case M_BEQ: | |
10148 | s = "cmp"; | |
10149 | s2 = "bteqz"; | |
10150 | goto do_branch; | |
10151 | case M_BNE: | |
10152 | s = "cmp"; | |
10153 | s2 = "btnez"; | |
10154 | goto do_branch; | |
10155 | case M_BLT: | |
10156 | s = "slt"; | |
10157 | s2 = "btnez"; | |
10158 | goto do_branch; | |
10159 | case M_BLTU: | |
10160 | s = "sltu"; | |
10161 | s2 = "btnez"; | |
10162 | goto do_branch; | |
10163 | case M_BLE: | |
10164 | s = "slt"; | |
10165 | s2 = "bteqz"; | |
10166 | goto do_reverse_branch; | |
10167 | case M_BLEU: | |
10168 | s = "sltu"; | |
10169 | s2 = "bteqz"; | |
10170 | goto do_reverse_branch; | |
10171 | case M_BGE: | |
10172 | s = "slt"; | |
10173 | s2 = "bteqz"; | |
10174 | goto do_branch; | |
10175 | case M_BGEU: | |
10176 | s = "sltu"; | |
10177 | s2 = "bteqz"; | |
10178 | goto do_branch; | |
10179 | case M_BGT: | |
10180 | s = "slt"; | |
10181 | s2 = "btnez"; | |
10182 | goto do_reverse_branch; | |
10183 | case M_BGTU: | |
10184 | s = "sltu"; | |
10185 | s2 = "btnez"; | |
10186 | ||
10187 | do_reverse_branch: | |
10188 | tmp = xreg; | |
10189 | xreg = yreg; | |
10190 | yreg = tmp; | |
10191 | ||
10192 | do_branch: | |
67c0d1eb RS |
10193 | macro_build (NULL, s, "x,y", xreg, yreg); |
10194 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
10195 | break; |
10196 | ||
10197 | case M_BEQ_I: | |
10198 | s = "cmpi"; | |
10199 | s2 = "bteqz"; | |
10200 | s3 = "x,U"; | |
10201 | goto do_branch_i; | |
10202 | case M_BNE_I: | |
10203 | s = "cmpi"; | |
10204 | s2 = "btnez"; | |
10205 | s3 = "x,U"; | |
10206 | goto do_branch_i; | |
10207 | case M_BLT_I: | |
10208 | s = "slti"; | |
10209 | s2 = "btnez"; | |
10210 | s3 = "x,8"; | |
10211 | goto do_branch_i; | |
10212 | case M_BLTU_I: | |
10213 | s = "sltiu"; | |
10214 | s2 = "btnez"; | |
10215 | s3 = "x,8"; | |
10216 | goto do_branch_i; | |
10217 | case M_BLE_I: | |
10218 | s = "slti"; | |
10219 | s2 = "btnez"; | |
10220 | s3 = "x,8"; | |
10221 | goto do_addone_branch_i; | |
10222 | case M_BLEU_I: | |
10223 | s = "sltiu"; | |
10224 | s2 = "btnez"; | |
10225 | s3 = "x,8"; | |
10226 | goto do_addone_branch_i; | |
10227 | case M_BGE_I: | |
10228 | s = "slti"; | |
10229 | s2 = "bteqz"; | |
10230 | s3 = "x,8"; | |
10231 | goto do_branch_i; | |
10232 | case M_BGEU_I: | |
10233 | s = "sltiu"; | |
10234 | s2 = "bteqz"; | |
10235 | s3 = "x,8"; | |
10236 | goto do_branch_i; | |
10237 | case M_BGT_I: | |
10238 | s = "slti"; | |
10239 | s2 = "bteqz"; | |
10240 | s3 = "x,8"; | |
10241 | goto do_addone_branch_i; | |
10242 | case M_BGTU_I: | |
10243 | s = "sltiu"; | |
10244 | s2 = "bteqz"; | |
10245 | s3 = "x,8"; | |
10246 | ||
10247 | do_addone_branch_i: | |
10248 | if (imm_expr.X_op != O_constant) | |
10249 | as_bad (_("Unsupported large constant")); | |
10250 | ++imm_expr.X_add_number; | |
10251 | ||
10252 | do_branch_i: | |
67c0d1eb RS |
10253 | macro_build (&imm_expr, s, s3, xreg); |
10254 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
10255 | break; |
10256 | ||
10257 | case M_ABS: | |
10258 | expr1.X_add_number = 0; | |
67c0d1eb | 10259 | macro_build (&expr1, "slti", "x,8", yreg); |
252b5132 | 10260 | if (xreg != yreg) |
67c0d1eb | 10261 | move_register (xreg, yreg); |
252b5132 | 10262 | expr1.X_add_number = 2; |
67c0d1eb RS |
10263 | macro_build (&expr1, "bteqz", "p"); |
10264 | macro_build (NULL, "neg", "x,w", xreg, xreg); | |
252b5132 RH |
10265 | } |
10266 | } | |
10267 | ||
10268 | /* For consistency checking, verify that all bits are specified either | |
10269 | by the match/mask part of the instruction definition, or by the | |
10270 | operand list. */ | |
10271 | static int | |
17a2f251 | 10272 | validate_mips_insn (const struct mips_opcode *opc) |
252b5132 RH |
10273 | { |
10274 | const char *p = opc->args; | |
10275 | char c; | |
10276 | unsigned long used_bits = opc->mask; | |
10277 | ||
10278 | if ((used_bits & opc->match) != opc->match) | |
10279 | { | |
10280 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
10281 | opc->name, opc->args); | |
10282 | return 0; | |
10283 | } | |
10284 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
10285 | while (*p) | |
10286 | switch (c = *p++) | |
10287 | { | |
10288 | case ',': break; | |
10289 | case '(': break; | |
10290 | case ')': break; | |
af7ee8bf CD |
10291 | case '+': |
10292 | switch (c = *p++) | |
10293 | { | |
9bcd4f99 TS |
10294 | case '1': USE_BITS (OP_MASK_UDI1, OP_SH_UDI1); break; |
10295 | case '2': USE_BITS (OP_MASK_UDI2, OP_SH_UDI2); break; | |
10296 | case '3': USE_BITS (OP_MASK_UDI3, OP_SH_UDI3); break; | |
10297 | case '4': USE_BITS (OP_MASK_UDI4, OP_SH_UDI4); break; | |
af7ee8bf CD |
10298 | case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10299 | case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
10300 | case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
bbcc0807 CD |
10301 | case 'D': USE_BITS (OP_MASK_RD, OP_SH_RD); |
10302 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
5f74bc13 CD |
10303 | case 'E': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10304 | case 'F': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
10305 | case 'G': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
10306 | case 'H': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
10307 | case 'I': break; | |
ef2e4d86 CF |
10308 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; |
10309 | case 'T': USE_BITS (OP_MASK_RT, OP_SH_RT); | |
10310 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
bb35fb24 NC |
10311 | case 'x': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; |
10312 | case 'X': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; | |
10313 | case 'p': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
10314 | case 'P': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
dd3cbb7e | 10315 | case 'Q': USE_BITS (OP_MASK_SEQI, OP_SH_SEQI); break; |
bb35fb24 NC |
10316 | case 's': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; |
10317 | case 'S': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; | |
98675402 RS |
10318 | case 'z': USE_BITS (OP_MASK_RZ, OP_SH_RZ); break; |
10319 | case 'Z': USE_BITS (OP_MASK_FZ, OP_SH_FZ); break; | |
10320 | case 'a': USE_BITS (OP_MASK_OFFSET_A, OP_SH_OFFSET_A); break; | |
10321 | case 'b': USE_BITS (OP_MASK_OFFSET_B, OP_SH_OFFSET_B); break; | |
10322 | case 'c': USE_BITS (OP_MASK_OFFSET_C, OP_SH_OFFSET_C); break; | |
bb35fb24 | 10323 | |
af7ee8bf CD |
10324 | default: |
10325 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
10326 | c, opc->name, opc->args); | |
10327 | return 0; | |
10328 | } | |
10329 | break; | |
252b5132 RH |
10330 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10331 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
10332 | case 'A': break; | |
4372b673 | 10333 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
10334 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
10335 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
10336 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10337 | case 'F': break; | |
10338 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 10339 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 10340 | case 'I': break; |
e972090a | 10341 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
af7ee8bf | 10342 | case 'K': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
10343 | case 'L': break; |
10344 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
10345 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
10346 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
10347 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
10348 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
10349 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
10350 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10351 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
10352 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10353 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
10354 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
10355 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10356 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
10357 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
10358 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10359 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
10360 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
10361 | case 'f': break; | |
10362 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
10363 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
10364 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10365 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
10366 | case 'l': break; | |
10367 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10368 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10369 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
10370 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10371 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10372 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10373 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
10374 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10375 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10376 | case 'x': break; | |
10377 | case 'z': break; | |
10378 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
10379 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
10380 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
60b63b72 RS |
10381 | case 'e': USE_BITS (OP_MASK_VECBYTE, OP_SH_VECBYTE); break; |
10382 | case '%': USE_BITS (OP_MASK_VECALIGN, OP_SH_VECALIGN); break; | |
10383 | case '[': break; | |
10384 | case ']': break; | |
620edafd | 10385 | case '1': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8b082fb1 | 10386 | case '2': USE_BITS (OP_MASK_BP, OP_SH_BP); break; |
74cd071d CF |
10387 | case '3': USE_BITS (OP_MASK_SA3, OP_SH_SA3); break; |
10388 | case '4': USE_BITS (OP_MASK_SA4, OP_SH_SA4); break; | |
10389 | case '5': USE_BITS (OP_MASK_IMM8, OP_SH_IMM8); break; | |
10390 | case '6': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10391 | case '7': USE_BITS (OP_MASK_DSPACC, OP_SH_DSPACC); break; | |
10392 | case '8': USE_BITS (OP_MASK_WRDSP, OP_SH_WRDSP); break; | |
10393 | case '9': USE_BITS (OP_MASK_DSPACC_S, OP_SH_DSPACC_S);break; | |
10394 | case '0': USE_BITS (OP_MASK_DSPSFT, OP_SH_DSPSFT); break; | |
10395 | case '\'': USE_BITS (OP_MASK_RDDSP, OP_SH_RDDSP); break; | |
10396 | case ':': USE_BITS (OP_MASK_DSPSFT_7, OP_SH_DSPSFT_7);break; | |
10397 | case '@': USE_BITS (OP_MASK_IMM10, OP_SH_IMM10); break; | |
ef2e4d86 CF |
10398 | case '!': USE_BITS (OP_MASK_MT_U, OP_SH_MT_U); break; |
10399 | case '$': USE_BITS (OP_MASK_MT_H, OP_SH_MT_H); break; | |
10400 | case '*': USE_BITS (OP_MASK_MTACC_T, OP_SH_MTACC_T); break; | |
10401 | case '&': USE_BITS (OP_MASK_MTACC_D, OP_SH_MTACC_D); break; | |
dec0624d MR |
10402 | case '\\': USE_BITS (OP_MASK_3BITPOS, OP_SH_3BITPOS); break; |
10403 | case '~': USE_BITS (OP_MASK_OFFSET12, OP_SH_OFFSET12); break; | |
ef2e4d86 | 10404 | case 'g': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
10405 | default: |
10406 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
10407 | c, opc->name, opc->args); | |
10408 | return 0; | |
10409 | } | |
10410 | #undef USE_BITS | |
10411 | if (used_bits != 0xffffffff) | |
10412 | { | |
10413 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
10414 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
10415 | return 0; | |
10416 | } | |
10417 | return 1; | |
10418 | } | |
10419 | ||
df58fc94 RS |
10420 | /* For consistency checking, verify that the length implied matches the |
10421 | major opcode and that all bits are specified either by the match/mask | |
10422 | part of the instruction definition, or by the operand list. */ | |
10423 | ||
10424 | static int | |
10425 | validate_micromips_insn (const struct mips_opcode *opc) | |
10426 | { | |
10427 | unsigned long match = opc->match; | |
10428 | unsigned long mask = opc->mask; | |
10429 | const char *p = opc->args; | |
10430 | unsigned long insn_bits; | |
10431 | unsigned long used_bits; | |
10432 | unsigned long major; | |
10433 | unsigned int length; | |
10434 | char e; | |
10435 | char c; | |
10436 | ||
10437 | if ((mask & match) != match) | |
10438 | { | |
10439 | as_bad (_("Internal error: bad microMIPS opcode (mask error): %s %s"), | |
10440 | opc->name, opc->args); | |
10441 | return 0; | |
10442 | } | |
10443 | length = micromips_insn_length (opc); | |
10444 | if (length != 2 && length != 4) | |
10445 | { | |
10446 | as_bad (_("Internal error: bad microMIPS opcode (incorrect length: %u): " | |
10447 | "%s %s"), length, opc->name, opc->args); | |
10448 | return 0; | |
10449 | } | |
10450 | major = match >> (10 + 8 * (length - 2)); | |
10451 | if ((length == 2 && (major & 7) != 1 && (major & 6) != 2) | |
10452 | || (length == 4 && (major & 7) != 0 && (major & 4) != 4)) | |
10453 | { | |
10454 | as_bad (_("Internal error: bad microMIPS opcode " | |
10455 | "(opcode/length mismatch): %s %s"), opc->name, opc->args); | |
10456 | return 0; | |
10457 | } | |
10458 | ||
10459 | /* Shift piecewise to avoid an overflow where unsigned long is 32-bit. */ | |
10460 | insn_bits = 1 << 4 * length; | |
10461 | insn_bits <<= 4 * length; | |
10462 | insn_bits -= 1; | |
10463 | used_bits = mask; | |
10464 | #define USE_BITS(field) \ | |
10465 | (used_bits |= MICROMIPSOP_MASK_##field << MICROMIPSOP_SH_##field) | |
10466 | while (*p) | |
10467 | switch (c = *p++) | |
10468 | { | |
10469 | case ',': break; | |
10470 | case '(': break; | |
10471 | case ')': break; | |
10472 | case '+': | |
10473 | e = c; | |
10474 | switch (c = *p++) | |
10475 | { | |
10476 | case 'A': USE_BITS (EXTLSB); break; | |
10477 | case 'B': USE_BITS (INSMSB); break; | |
10478 | case 'C': USE_BITS (EXTMSBD); break; | |
10479 | case 'D': USE_BITS (RS); USE_BITS (SEL); break; | |
10480 | case 'E': USE_BITS (EXTLSB); break; | |
10481 | case 'F': USE_BITS (INSMSB); break; | |
10482 | case 'G': USE_BITS (EXTMSBD); break; | |
10483 | case 'H': USE_BITS (EXTMSBD); break; | |
10484 | default: | |
10485 | as_bad (_("Internal error: bad mips opcode " | |
10486 | "(unknown extension operand type `%c%c'): %s %s"), | |
10487 | e, c, opc->name, opc->args); | |
10488 | return 0; | |
10489 | } | |
10490 | break; | |
10491 | case 'm': | |
10492 | e = c; | |
10493 | switch (c = *p++) | |
10494 | { | |
10495 | case 'A': USE_BITS (IMMA); break; | |
10496 | case 'B': USE_BITS (IMMB); break; | |
10497 | case 'C': USE_BITS (IMMC); break; | |
10498 | case 'D': USE_BITS (IMMD); break; | |
10499 | case 'E': USE_BITS (IMME); break; | |
10500 | case 'F': USE_BITS (IMMF); break; | |
10501 | case 'G': USE_BITS (IMMG); break; | |
10502 | case 'H': USE_BITS (IMMH); break; | |
10503 | case 'I': USE_BITS (IMMI); break; | |
10504 | case 'J': USE_BITS (IMMJ); break; | |
10505 | case 'L': USE_BITS (IMML); break; | |
10506 | case 'M': USE_BITS (IMMM); break; | |
10507 | case 'N': USE_BITS (IMMN); break; | |
10508 | case 'O': USE_BITS (IMMO); break; | |
10509 | case 'P': USE_BITS (IMMP); break; | |
10510 | case 'Q': USE_BITS (IMMQ); break; | |
10511 | case 'U': USE_BITS (IMMU); break; | |
10512 | case 'W': USE_BITS (IMMW); break; | |
10513 | case 'X': USE_BITS (IMMX); break; | |
10514 | case 'Y': USE_BITS (IMMY); break; | |
10515 | case 'Z': break; | |
10516 | case 'a': break; | |
10517 | case 'b': USE_BITS (MB); break; | |
10518 | case 'c': USE_BITS (MC); break; | |
10519 | case 'd': USE_BITS (MD); break; | |
10520 | case 'e': USE_BITS (ME); break; | |
10521 | case 'f': USE_BITS (MF); break; | |
10522 | case 'g': USE_BITS (MG); break; | |
10523 | case 'h': USE_BITS (MH); break; | |
10524 | case 'i': USE_BITS (MI); break; | |
10525 | case 'j': USE_BITS (MJ); break; | |
10526 | case 'l': USE_BITS (ML); break; | |
10527 | case 'm': USE_BITS (MM); break; | |
10528 | case 'n': USE_BITS (MN); break; | |
10529 | case 'p': USE_BITS (MP); break; | |
10530 | case 'q': USE_BITS (MQ); break; | |
10531 | case 'r': break; | |
10532 | case 's': break; | |
10533 | case 't': break; | |
10534 | case 'x': break; | |
10535 | case 'y': break; | |
10536 | case 'z': break; | |
10537 | default: | |
10538 | as_bad (_("Internal error: bad mips opcode " | |
10539 | "(unknown extension operand type `%c%c'): %s %s"), | |
10540 | e, c, opc->name, opc->args); | |
10541 | return 0; | |
10542 | } | |
10543 | break; | |
10544 | case '.': USE_BITS (OFFSET10); break; | |
10545 | case '1': USE_BITS (STYPE); break; | |
03f66e8a MR |
10546 | case '2': USE_BITS (BP); break; |
10547 | case '3': USE_BITS (SA3); break; | |
10548 | case '4': USE_BITS (SA4); break; | |
10549 | case '5': USE_BITS (IMM8); break; | |
10550 | case '6': USE_BITS (RS); break; | |
10551 | case '7': USE_BITS (DSPACC); break; | |
10552 | case '8': USE_BITS (WRDSP); break; | |
10553 | case '0': USE_BITS (DSPSFT); break; | |
df58fc94 RS |
10554 | case '<': USE_BITS (SHAMT); break; |
10555 | case '>': USE_BITS (SHAMT); break; | |
03f66e8a | 10556 | case '@': USE_BITS (IMM10); break; |
df58fc94 RS |
10557 | case 'B': USE_BITS (CODE10); break; |
10558 | case 'C': USE_BITS (COPZ); break; | |
10559 | case 'D': USE_BITS (FD); break; | |
10560 | case 'E': USE_BITS (RT); break; | |
10561 | case 'G': USE_BITS (RS); break; | |
444d75be | 10562 | case 'H': USE_BITS (SEL); break; |
df58fc94 RS |
10563 | case 'K': USE_BITS (RS); break; |
10564 | case 'M': USE_BITS (CCC); break; | |
10565 | case 'N': USE_BITS (BCC); break; | |
10566 | case 'R': USE_BITS (FR); break; | |
10567 | case 'S': USE_BITS (FS); break; | |
10568 | case 'T': USE_BITS (FT); break; | |
10569 | case 'V': USE_BITS (FS); break; | |
dec0624d | 10570 | case '\\': USE_BITS (3BITPOS); break; |
03f66e8a | 10571 | case '^': USE_BITS (RD); break; |
df58fc94 RS |
10572 | case 'a': USE_BITS (TARGET); break; |
10573 | case 'b': USE_BITS (RS); break; | |
10574 | case 'c': USE_BITS (CODE); break; | |
10575 | case 'd': USE_BITS (RD); break; | |
10576 | case 'h': USE_BITS (PREFX); break; | |
10577 | case 'i': USE_BITS (IMMEDIATE); break; | |
10578 | case 'j': USE_BITS (DELTA); break; | |
10579 | case 'k': USE_BITS (CACHE); break; | |
10580 | case 'n': USE_BITS (RT); break; | |
10581 | case 'o': USE_BITS (DELTA); break; | |
10582 | case 'p': USE_BITS (DELTA); break; | |
10583 | case 'q': USE_BITS (CODE2); break; | |
10584 | case 'r': USE_BITS (RS); break; | |
10585 | case 's': USE_BITS (RS); break; | |
10586 | case 't': USE_BITS (RT); break; | |
10587 | case 'u': USE_BITS (IMMEDIATE); break; | |
10588 | case 'v': USE_BITS (RS); break; | |
10589 | case 'w': USE_BITS (RT); break; | |
10590 | case 'y': USE_BITS (RS3); break; | |
10591 | case 'z': break; | |
10592 | case '|': USE_BITS (TRAP); break; | |
10593 | case '~': USE_BITS (OFFSET12); break; | |
10594 | default: | |
10595 | as_bad (_("Internal error: bad microMIPS opcode " | |
10596 | "(unknown operand type `%c'): %s %s"), | |
10597 | c, opc->name, opc->args); | |
10598 | return 0; | |
10599 | } | |
10600 | #undef USE_BITS | |
10601 | if (used_bits != insn_bits) | |
10602 | { | |
10603 | if (~used_bits & insn_bits) | |
10604 | as_bad (_("Internal error: bad microMIPS opcode " | |
10605 | "(bits 0x%lx undefined): %s %s"), | |
10606 | ~used_bits & insn_bits, opc->name, opc->args); | |
10607 | if (used_bits & ~insn_bits) | |
10608 | as_bad (_("Internal error: bad microMIPS opcode " | |
10609 | "(bits 0x%lx defined): %s %s"), | |
10610 | used_bits & ~insn_bits, opc->name, opc->args); | |
10611 | return 0; | |
10612 | } | |
10613 | return 1; | |
10614 | } | |
10615 | ||
9bcd4f99 TS |
10616 | /* UDI immediates. */ |
10617 | struct mips_immed { | |
10618 | char type; | |
10619 | unsigned int shift; | |
10620 | unsigned long mask; | |
10621 | const char * desc; | |
10622 | }; | |
10623 | ||
10624 | static const struct mips_immed mips_immed[] = { | |
10625 | { '1', OP_SH_UDI1, OP_MASK_UDI1, 0}, | |
10626 | { '2', OP_SH_UDI2, OP_MASK_UDI2, 0}, | |
10627 | { '3', OP_SH_UDI3, OP_MASK_UDI3, 0}, | |
10628 | { '4', OP_SH_UDI4, OP_MASK_UDI4, 0}, | |
10629 | { 0,0,0,0 } | |
10630 | }; | |
10631 | ||
7455baf8 TS |
10632 | /* Check whether an odd floating-point register is allowed. */ |
10633 | static int | |
10634 | mips_oddfpreg_ok (const struct mips_opcode *insn, int argnum) | |
10635 | { | |
10636 | const char *s = insn->name; | |
10637 | ||
10638 | if (insn->pinfo == INSN_MACRO) | |
10639 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
10640 | return 1; | |
10641 | ||
10642 | if (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa)) | |
10643 | { | |
10644 | /* Allow odd registers for single-precision ops. */ | |
10645 | switch (insn->pinfo & (FP_S | FP_D)) | |
10646 | { | |
10647 | case FP_S: | |
10648 | case 0: | |
10649 | return 1; /* both single precision - ok */ | |
10650 | case FP_D: | |
10651 | return 0; /* both double precision - fail */ | |
10652 | default: | |
10653 | break; | |
10654 | } | |
10655 | ||
10656 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ | |
10657 | s = strchr (insn->name, '.'); | |
10658 | if (argnum == 2) | |
10659 | s = s != NULL ? strchr (s + 1, '.') : NULL; | |
10660 | return (s != NULL && (s[1] == 'w' || s[1] == 's')); | |
10661 | } | |
10662 | ||
10663 | /* Single-precision coprocessor loads and moves are OK too. */ | |
10664 | if ((insn->pinfo & FP_S) | |
10665 | && (insn->pinfo & (INSN_COPROC_MEMORY_DELAY | INSN_STORE_MEMORY | |
10666 | | INSN_LOAD_COPROC_DELAY | INSN_COPROC_MOVE_DELAY))) | |
10667 | return 1; | |
10668 | ||
10669 | return 0; | |
10670 | } | |
10671 | ||
df58fc94 RS |
10672 | /* Check if EXPR is a constant between MIN (inclusive) and MAX (exclusive) |
10673 | taking bits from BIT up. */ | |
10674 | static int | |
10675 | expr_const_in_range (expressionS *ep, offsetT min, offsetT max, int bit) | |
10676 | { | |
10677 | return (ep->X_op == O_constant | |
10678 | && (ep->X_add_number & ((1 << bit) - 1)) == 0 | |
10679 | && ep->X_add_number >= min << bit | |
10680 | && ep->X_add_number < max << bit); | |
10681 | } | |
10682 | ||
252b5132 RH |
10683 | /* This routine assembles an instruction into its binary format. As a |
10684 | side effect, it sets one of the global variables imm_reloc or | |
10685 | offset_reloc to the type of relocation to do if one of the operands | |
10686 | is an address expression. */ | |
10687 | ||
10688 | static void | |
17a2f251 | 10689 | mips_ip (char *str, struct mips_cl_insn *ip) |
252b5132 | 10690 | { |
df58fc94 RS |
10691 | bfd_boolean wrong_delay_slot_insns = FALSE; |
10692 | bfd_boolean need_delay_slot_ok = TRUE; | |
10693 | struct mips_opcode *firstinsn = NULL; | |
10694 | const struct mips_opcode *past; | |
10695 | struct hash_control *hash; | |
252b5132 RH |
10696 | char *s; |
10697 | const char *args; | |
43841e91 | 10698 | char c = 0; |
252b5132 RH |
10699 | struct mips_opcode *insn; |
10700 | char *argsStart; | |
10701 | unsigned int regno; | |
34224acf | 10702 | unsigned int lastregno; |
df58fc94 | 10703 | unsigned int destregno = 0; |
af7ee8bf | 10704 | unsigned int lastpos = 0; |
071742cf | 10705 | unsigned int limlo, limhi; |
252b5132 | 10706 | char *s_reset; |
74cd071d | 10707 | offsetT min_range, max_range; |
df58fc94 | 10708 | long opend; |
a40bc9dd | 10709 | char *name; |
707bfff6 TS |
10710 | int argnum; |
10711 | unsigned int rtype; | |
df58fc94 | 10712 | char *dot; |
a40bc9dd | 10713 | long end; |
252b5132 RH |
10714 | |
10715 | insn_error = NULL; | |
10716 | ||
df58fc94 RS |
10717 | if (mips_opts.micromips) |
10718 | { | |
10719 | hash = micromips_op_hash; | |
10720 | past = µmips_opcodes[bfd_micromips_num_opcodes]; | |
10721 | } | |
10722 | else | |
10723 | { | |
10724 | hash = op_hash; | |
10725 | past = &mips_opcodes[NUMOPCODES]; | |
10726 | } | |
10727 | forced_insn_length = 0; | |
252b5132 | 10728 | insn = NULL; |
252b5132 | 10729 | |
df58fc94 | 10730 | /* We first try to match an instruction up to a space or to the end. */ |
a40bc9dd RS |
10731 | for (end = 0; str[end] != '\0' && !ISSPACE (str[end]); end++) |
10732 | continue; | |
bdaaa2e1 | 10733 | |
a40bc9dd RS |
10734 | /* Make a copy of the instruction so that we can fiddle with it. */ |
10735 | name = alloca (end + 1); | |
10736 | memcpy (name, str, end); | |
10737 | name[end] = '\0'; | |
252b5132 | 10738 | |
df58fc94 RS |
10739 | for (;;) |
10740 | { | |
10741 | insn = (struct mips_opcode *) hash_find (hash, name); | |
10742 | ||
10743 | if (insn != NULL || !mips_opts.micromips) | |
10744 | break; | |
10745 | if (forced_insn_length) | |
10746 | break; | |
10747 | ||
10748 | /* See if there's an instruction size override suffix, | |
10749 | either `16' or `32', at the end of the mnemonic proper, | |
10750 | that defines the operation, i.e. before the first `.' | |
10751 | character if any. Strip it and retry. */ | |
10752 | dot = strchr (name, '.'); | |
10753 | opend = dot != NULL ? dot - name : end; | |
10754 | if (opend < 3) | |
10755 | break; | |
10756 | if (name[opend - 2] == '1' && name[opend - 1] == '6') | |
10757 | forced_insn_length = 2; | |
10758 | else if (name[opend - 2] == '3' && name[opend - 1] == '2') | |
10759 | forced_insn_length = 4; | |
10760 | else | |
10761 | break; | |
10762 | memcpy (name + opend - 2, name + opend, end - opend + 1); | |
10763 | } | |
252b5132 RH |
10764 | if (insn == NULL) |
10765 | { | |
a40bc9dd RS |
10766 | insn_error = _("Unrecognized opcode"); |
10767 | return; | |
252b5132 RH |
10768 | } |
10769 | ||
df58fc94 RS |
10770 | /* For microMIPS instructions placed in a fixed-length branch delay slot |
10771 | we make up to two passes over the relevant fragment of the opcode | |
10772 | table. First we try instructions that meet the delay slot's length | |
10773 | requirement. If none matched, then we retry with the remaining ones | |
10774 | and if one matches, then we use it and then issue an appropriate | |
10775 | warning later on. */ | |
a40bc9dd | 10776 | argsStart = s = str + end; |
252b5132 RH |
10777 | for (;;) |
10778 | { | |
df58fc94 RS |
10779 | bfd_boolean delay_slot_ok; |
10780 | bfd_boolean size_ok; | |
b34976b6 | 10781 | bfd_boolean ok; |
252b5132 | 10782 | |
a40bc9dd | 10783 | gas_assert (strcmp (insn->name, name) == 0); |
252b5132 | 10784 | |
f79e2745 | 10785 | ok = is_opcode_valid (insn); |
df58fc94 RS |
10786 | size_ok = is_size_valid (insn); |
10787 | delay_slot_ok = is_delay_slot_valid (insn); | |
10788 | if (!delay_slot_ok && !wrong_delay_slot_insns) | |
252b5132 | 10789 | { |
df58fc94 RS |
10790 | firstinsn = insn; |
10791 | wrong_delay_slot_insns = TRUE; | |
10792 | } | |
10793 | if (!ok || !size_ok || delay_slot_ok != need_delay_slot_ok) | |
10794 | { | |
10795 | static char buf[256]; | |
10796 | ||
10797 | if (insn + 1 < past && strcmp (insn->name, insn[1].name) == 0) | |
252b5132 RH |
10798 | { |
10799 | ++insn; | |
10800 | continue; | |
10801 | } | |
df58fc94 | 10802 | if (wrong_delay_slot_insns && need_delay_slot_ok) |
beae10d5 | 10803 | { |
df58fc94 RS |
10804 | gas_assert (firstinsn); |
10805 | need_delay_slot_ok = FALSE; | |
10806 | past = insn + 1; | |
10807 | insn = firstinsn; | |
10808 | continue; | |
252b5132 | 10809 | } |
df58fc94 RS |
10810 | |
10811 | if (insn_error) | |
10812 | return; | |
10813 | ||
10814 | if (!ok) | |
7bd942df | 10815 | sprintf (buf, _("Opcode not supported on this processor: %s (%s)"), |
df58fc94 RS |
10816 | mips_cpu_info_from_arch (mips_opts.arch)->name, |
10817 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
10818 | else | |
10819 | sprintf (buf, _("Unrecognized %u-bit version of microMIPS opcode"), | |
10820 | 8 * forced_insn_length); | |
10821 | insn_error = buf; | |
10822 | ||
10823 | return; | |
252b5132 RH |
10824 | } |
10825 | ||
1e915849 | 10826 | create_insn (ip, insn); |
268f6bed | 10827 | insn_error = NULL; |
707bfff6 | 10828 | argnum = 1; |
24864476 | 10829 | lastregno = 0xffffffff; |
252b5132 RH |
10830 | for (args = insn->args;; ++args) |
10831 | { | |
deec1734 CD |
10832 | int is_mdmx; |
10833 | ||
ad8d3bb3 | 10834 | s += strspn (s, " \t"); |
deec1734 | 10835 | is_mdmx = 0; |
252b5132 RH |
10836 | switch (*args) |
10837 | { | |
10838 | case '\0': /* end of args */ | |
10839 | if (*s == '\0') | |
10840 | return; | |
10841 | break; | |
10842 | ||
03f66e8a MR |
10843 | case '2': |
10844 | /* DSP 2-bit unsigned immediate in bit 11 (for standard MIPS | |
10845 | code) or 14 (for microMIPS code). */ | |
8b082fb1 TS |
10846 | my_getExpression (&imm_expr, s); |
10847 | check_absolute_expr (ip, &imm_expr); | |
10848 | if ((unsigned long) imm_expr.X_add_number != 1 | |
10849 | && (unsigned long) imm_expr.X_add_number != 3) | |
10850 | { | |
10851 | as_bad (_("BALIGN immediate not 1 or 3 (%lu)"), | |
10852 | (unsigned long) imm_expr.X_add_number); | |
10853 | } | |
03f66e8a MR |
10854 | INSERT_OPERAND (mips_opts.micromips, |
10855 | BP, *ip, imm_expr.X_add_number); | |
8b082fb1 TS |
10856 | imm_expr.X_op = O_absent; |
10857 | s = expr_end; | |
10858 | continue; | |
10859 | ||
03f66e8a MR |
10860 | case '3': |
10861 | /* DSP 3-bit unsigned immediate in bit 13 (for standard MIPS | |
10862 | code) or 21 (for microMIPS code). */ | |
10863 | { | |
10864 | unsigned long mask = (mips_opts.micromips | |
10865 | ? MICROMIPSOP_MASK_SA3 : OP_MASK_SA3); | |
10866 | ||
10867 | my_getExpression (&imm_expr, s); | |
10868 | check_absolute_expr (ip, &imm_expr); | |
10869 | if ((unsigned long) imm_expr.X_add_number > mask) | |
10870 | as_bad (_("DSP immediate not in range 0..%lu (%lu)"), | |
10871 | mask, (unsigned long) imm_expr.X_add_number); | |
10872 | INSERT_OPERAND (mips_opts.micromips, | |
10873 | SA3, *ip, imm_expr.X_add_number); | |
10874 | imm_expr.X_op = O_absent; | |
10875 | s = expr_end; | |
10876 | } | |
74cd071d CF |
10877 | continue; |
10878 | ||
03f66e8a MR |
10879 | case '4': |
10880 | /* DSP 4-bit unsigned immediate in bit 12 (for standard MIPS | |
10881 | code) or 21 (for microMIPS code). */ | |
10882 | { | |
10883 | unsigned long mask = (mips_opts.micromips | |
10884 | ? MICROMIPSOP_MASK_SA4 : OP_MASK_SA4); | |
10885 | ||
10886 | my_getExpression (&imm_expr, s); | |
10887 | check_absolute_expr (ip, &imm_expr); | |
10888 | if ((unsigned long) imm_expr.X_add_number > mask) | |
10889 | as_bad (_("DSP immediate not in range 0..%lu (%lu)"), | |
10890 | mask, (unsigned long) imm_expr.X_add_number); | |
10891 | INSERT_OPERAND (mips_opts.micromips, | |
10892 | SA4, *ip, imm_expr.X_add_number); | |
10893 | imm_expr.X_op = O_absent; | |
10894 | s = expr_end; | |
10895 | } | |
74cd071d CF |
10896 | continue; |
10897 | ||
03f66e8a MR |
10898 | case '5': |
10899 | /* DSP 8-bit unsigned immediate in bit 13 (for standard MIPS | |
10900 | code) or 16 (for microMIPS code). */ | |
10901 | { | |
10902 | unsigned long mask = (mips_opts.micromips | |
10903 | ? MICROMIPSOP_MASK_IMM8 : OP_MASK_IMM8); | |
10904 | ||
10905 | my_getExpression (&imm_expr, s); | |
10906 | check_absolute_expr (ip, &imm_expr); | |
10907 | if ((unsigned long) imm_expr.X_add_number > mask) | |
10908 | as_bad (_("DSP immediate not in range 0..%lu (%lu)"), | |
10909 | mask, (unsigned long) imm_expr.X_add_number); | |
10910 | INSERT_OPERAND (mips_opts.micromips, | |
10911 | IMM8, *ip, imm_expr.X_add_number); | |
10912 | imm_expr.X_op = O_absent; | |
10913 | s = expr_end; | |
10914 | } | |
74cd071d CF |
10915 | continue; |
10916 | ||
03f66e8a MR |
10917 | case '6': |
10918 | /* DSP 5-bit unsigned immediate in bit 16 (for standard MIPS | |
10919 | code) or 21 (for microMIPS code). */ | |
10920 | { | |
10921 | unsigned long mask = (mips_opts.micromips | |
10922 | ? MICROMIPSOP_MASK_RS : OP_MASK_RS); | |
10923 | ||
10924 | my_getExpression (&imm_expr, s); | |
10925 | check_absolute_expr (ip, &imm_expr); | |
10926 | if ((unsigned long) imm_expr.X_add_number > mask) | |
10927 | as_bad (_("DSP immediate not in range 0..%lu (%lu)"), | |
10928 | mask, (unsigned long) imm_expr.X_add_number); | |
10929 | INSERT_OPERAND (mips_opts.micromips, | |
10930 | RS, *ip, imm_expr.X_add_number); | |
10931 | imm_expr.X_op = O_absent; | |
10932 | s = expr_end; | |
10933 | } | |
74cd071d CF |
10934 | continue; |
10935 | ||
90ecf173 | 10936 | case '7': /* Four DSP accumulators in bits 11,12. */ |
03f66e8a MR |
10937 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' |
10938 | && s[3] >= '0' && s[3] <= '3') | |
74cd071d CF |
10939 | { |
10940 | regno = s[3] - '0'; | |
10941 | s += 4; | |
03f66e8a | 10942 | INSERT_OPERAND (mips_opts.micromips, DSPACC, *ip, regno); |
74cd071d CF |
10943 | continue; |
10944 | } | |
10945 | else | |
10946 | as_bad (_("Invalid dsp acc register")); | |
10947 | break; | |
10948 | ||
03f66e8a MR |
10949 | case '8': |
10950 | /* DSP 6-bit unsigned immediate in bit 11 (for standard MIPS | |
10951 | code) or 14 (for microMIPS code). */ | |
10952 | { | |
10953 | unsigned long mask = (mips_opts.micromips | |
10954 | ? MICROMIPSOP_MASK_WRDSP | |
10955 | : OP_MASK_WRDSP); | |
10956 | ||
10957 | my_getExpression (&imm_expr, s); | |
10958 | check_absolute_expr (ip, &imm_expr); | |
10959 | if ((unsigned long) imm_expr.X_add_number > mask) | |
10960 | as_bad (_("DSP immediate not in range 0..%lu (%lu)"), | |
10961 | mask, (unsigned long) imm_expr.X_add_number); | |
10962 | INSERT_OPERAND (mips_opts.micromips, | |
10963 | WRDSP, *ip, imm_expr.X_add_number); | |
10964 | imm_expr.X_op = O_absent; | |
10965 | s = expr_end; | |
10966 | } | |
74cd071d CF |
10967 | continue; |
10968 | ||
90ecf173 | 10969 | case '9': /* Four DSP accumulators in bits 21,22. */ |
df58fc94 | 10970 | gas_assert (!mips_opts.micromips); |
03f66e8a MR |
10971 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' |
10972 | && s[3] >= '0' && s[3] <= '3') | |
74cd071d CF |
10973 | { |
10974 | regno = s[3] - '0'; | |
10975 | s += 4; | |
df58fc94 | 10976 | INSERT_OPERAND (0, DSPACC_S, *ip, regno); |
74cd071d CF |
10977 | continue; |
10978 | } | |
10979 | else | |
10980 | as_bad (_("Invalid dsp acc register")); | |
10981 | break; | |
10982 | ||
03f66e8a MR |
10983 | case '0': |
10984 | /* DSP 6-bit signed immediate in bit 16 (for standard MIPS | |
10985 | code) or 20 (for microMIPS code). */ | |
10986 | { | |
10987 | long mask = (mips_opts.micromips | |
10988 | ? MICROMIPSOP_MASK_DSPSFT : OP_MASK_DSPSFT); | |
10989 | ||
10990 | my_getExpression (&imm_expr, s); | |
10991 | check_absolute_expr (ip, &imm_expr); | |
10992 | min_range = -((mask + 1) >> 1); | |
10993 | max_range = ((mask + 1) >> 1) - 1; | |
10994 | if (imm_expr.X_add_number < min_range | |
10995 | || imm_expr.X_add_number > max_range) | |
a9e24354 TS |
10996 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
10997 | (long) min_range, (long) max_range, | |
10998 | (long) imm_expr.X_add_number); | |
03f66e8a MR |
10999 | INSERT_OPERAND (mips_opts.micromips, |
11000 | DSPSFT, *ip, imm_expr.X_add_number); | |
11001 | imm_expr.X_op = O_absent; | |
11002 | s = expr_end; | |
11003 | } | |
74cd071d CF |
11004 | continue; |
11005 | ||
90ecf173 | 11006 | case '\'': /* DSP 6-bit unsigned immediate in bit 16. */ |
df58fc94 | 11007 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
11008 | my_getExpression (&imm_expr, s); |
11009 | check_absolute_expr (ip, &imm_expr); | |
11010 | if (imm_expr.X_add_number & ~OP_MASK_RDDSP) | |
11011 | { | |
a9e24354 TS |
11012 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
11013 | OP_MASK_RDDSP, | |
11014 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 11015 | } |
df58fc94 | 11016 | INSERT_OPERAND (0, RDDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
11017 | imm_expr.X_op = O_absent; |
11018 | s = expr_end; | |
11019 | continue; | |
11020 | ||
90ecf173 | 11021 | case ':': /* DSP 7-bit signed immediate in bit 19. */ |
df58fc94 | 11022 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
11023 | my_getExpression (&imm_expr, s); |
11024 | check_absolute_expr (ip, &imm_expr); | |
11025 | min_range = -((OP_MASK_DSPSFT_7 + 1) >> 1); | |
11026 | max_range = ((OP_MASK_DSPSFT_7 + 1) >> 1) - 1; | |
11027 | if (imm_expr.X_add_number < min_range || | |
11028 | imm_expr.X_add_number > max_range) | |
11029 | { | |
a9e24354 TS |
11030 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
11031 | (long) min_range, (long) max_range, | |
11032 | (long) imm_expr.X_add_number); | |
74cd071d | 11033 | } |
df58fc94 | 11034 | INSERT_OPERAND (0, DSPSFT_7, *ip, imm_expr.X_add_number); |
74cd071d CF |
11035 | imm_expr.X_op = O_absent; |
11036 | s = expr_end; | |
11037 | continue; | |
11038 | ||
90ecf173 | 11039 | case '@': /* DSP 10-bit signed immediate in bit 16. */ |
03f66e8a MR |
11040 | { |
11041 | long mask = (mips_opts.micromips | |
11042 | ? MICROMIPSOP_MASK_IMM10 : OP_MASK_IMM10); | |
11043 | ||
11044 | my_getExpression (&imm_expr, s); | |
11045 | check_absolute_expr (ip, &imm_expr); | |
11046 | min_range = -((mask + 1) >> 1); | |
11047 | max_range = ((mask + 1) >> 1) - 1; | |
11048 | if (imm_expr.X_add_number < min_range | |
11049 | || imm_expr.X_add_number > max_range) | |
a9e24354 TS |
11050 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
11051 | (long) min_range, (long) max_range, | |
11052 | (long) imm_expr.X_add_number); | |
03f66e8a MR |
11053 | INSERT_OPERAND (mips_opts.micromips, |
11054 | IMM10, *ip, imm_expr.X_add_number); | |
11055 | imm_expr.X_op = O_absent; | |
11056 | s = expr_end; | |
11057 | } | |
11058 | continue; | |
11059 | ||
11060 | case '^': /* DSP 5-bit unsigned immediate in bit 11. */ | |
11061 | gas_assert (mips_opts.micromips); | |
11062 | my_getExpression (&imm_expr, s); | |
11063 | check_absolute_expr (ip, &imm_expr); | |
11064 | if (imm_expr.X_add_number & ~MICROMIPSOP_MASK_RD) | |
11065 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), | |
11066 | MICROMIPSOP_MASK_RD, | |
11067 | (unsigned long) imm_expr.X_add_number); | |
11068 | INSERT_OPERAND (1, RD, *ip, imm_expr.X_add_number); | |
74cd071d CF |
11069 | imm_expr.X_op = O_absent; |
11070 | s = expr_end; | |
11071 | continue; | |
11072 | ||
a9e24354 | 11073 | case '!': /* MT usermode flag bit. */ |
df58fc94 | 11074 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11075 | my_getExpression (&imm_expr, s); |
11076 | check_absolute_expr (ip, &imm_expr); | |
11077 | if (imm_expr.X_add_number & ~OP_MASK_MT_U) | |
a9e24354 TS |
11078 | as_bad (_("MT usermode bit not 0 or 1 (%lu)"), |
11079 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11080 | INSERT_OPERAND (0, MT_U, *ip, imm_expr.X_add_number); |
ef2e4d86 CF |
11081 | imm_expr.X_op = O_absent; |
11082 | s = expr_end; | |
11083 | continue; | |
11084 | ||
a9e24354 | 11085 | case '$': /* MT load high flag bit. */ |
df58fc94 | 11086 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11087 | my_getExpression (&imm_expr, s); |
11088 | check_absolute_expr (ip, &imm_expr); | |
11089 | if (imm_expr.X_add_number & ~OP_MASK_MT_H) | |
a9e24354 TS |
11090 | as_bad (_("MT load high bit not 0 or 1 (%lu)"), |
11091 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11092 | INSERT_OPERAND (0, MT_H, *ip, imm_expr.X_add_number); |
ef2e4d86 CF |
11093 | imm_expr.X_op = O_absent; |
11094 | s = expr_end; | |
11095 | continue; | |
11096 | ||
90ecf173 | 11097 | case '*': /* Four DSP accumulators in bits 18,19. */ |
df58fc94 | 11098 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11099 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
11100 | s[3] >= '0' && s[3] <= '3') | |
11101 | { | |
11102 | regno = s[3] - '0'; | |
11103 | s += 4; | |
df58fc94 | 11104 | INSERT_OPERAND (0, MTACC_T, *ip, regno); |
ef2e4d86 CF |
11105 | continue; |
11106 | } | |
11107 | else | |
11108 | as_bad (_("Invalid dsp/smartmips acc register")); | |
11109 | break; | |
11110 | ||
90ecf173 | 11111 | case '&': /* Four DSP accumulators in bits 13,14. */ |
df58fc94 | 11112 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11113 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
11114 | s[3] >= '0' && s[3] <= '3') | |
11115 | { | |
11116 | regno = s[3] - '0'; | |
11117 | s += 4; | |
df58fc94 | 11118 | INSERT_OPERAND (0, MTACC_D, *ip, regno); |
ef2e4d86 CF |
11119 | continue; |
11120 | } | |
11121 | else | |
11122 | as_bad (_("Invalid dsp/smartmips acc register")); | |
11123 | break; | |
11124 | ||
dec0624d MR |
11125 | case '\\': /* 3-bit bit position. */ |
11126 | { | |
2906b037 MR |
11127 | unsigned long mask = (mips_opts.micromips |
11128 | ? MICROMIPSOP_MASK_3BITPOS | |
11129 | : OP_MASK_3BITPOS); | |
dec0624d MR |
11130 | |
11131 | my_getExpression (&imm_expr, s); | |
11132 | check_absolute_expr (ip, &imm_expr); | |
11133 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11134 | as_warn (_("Bit position for %s not in range 0..%lu (%lu)"), | |
11135 | ip->insn_mo->name, | |
11136 | mask, (unsigned long) imm_expr.X_add_number); | |
11137 | INSERT_OPERAND (mips_opts.micromips, | |
11138 | 3BITPOS, *ip, imm_expr.X_add_number); | |
11139 | imm_expr.X_op = O_absent; | |
11140 | s = expr_end; | |
11141 | } | |
11142 | continue; | |
11143 | ||
252b5132 | 11144 | case ',': |
a339155f | 11145 | ++argnum; |
252b5132 RH |
11146 | if (*s++ == *args) |
11147 | continue; | |
11148 | s--; | |
11149 | switch (*++args) | |
11150 | { | |
11151 | case 'r': | |
11152 | case 'v': | |
df58fc94 | 11153 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, lastregno); |
252b5132 RH |
11154 | continue; |
11155 | ||
11156 | case 'w': | |
df58fc94 | 11157 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, lastregno); |
38487616 TS |
11158 | continue; |
11159 | ||
252b5132 | 11160 | case 'W': |
df58fc94 RS |
11161 | gas_assert (!mips_opts.micromips); |
11162 | INSERT_OPERAND (0, FT, *ip, lastregno); | |
252b5132 RH |
11163 | continue; |
11164 | ||
11165 | case 'V': | |
df58fc94 | 11166 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, lastregno); |
252b5132 RH |
11167 | continue; |
11168 | } | |
11169 | break; | |
11170 | ||
11171 | case '(': | |
11172 | /* Handle optional base register. | |
11173 | Either the base register is omitted or | |
bdaaa2e1 | 11174 | we must have a left paren. */ |
252b5132 RH |
11175 | /* This is dependent on the next operand specifier |
11176 | is a base register specification. */ | |
df58fc94 RS |
11177 | gas_assert (args[1] == 'b' |
11178 | || (mips_opts.micromips | |
11179 | && args[1] == 'm' | |
11180 | && (args[2] == 'l' || args[2] == 'n' | |
11181 | || args[2] == 's' || args[2] == 'a'))); | |
11182 | if (*s == '\0' && args[1] == 'b') | |
252b5132 | 11183 | return; |
df58fc94 | 11184 | /* Fall through. */ |
252b5132 | 11185 | |
90ecf173 | 11186 | case ')': /* These must match exactly. */ |
df58fc94 RS |
11187 | if (*s++ == *args) |
11188 | continue; | |
11189 | break; | |
11190 | ||
11191 | case '[': /* These must match exactly. */ | |
60b63b72 | 11192 | case ']': |
df58fc94 | 11193 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
11194 | if (*s++ == *args) |
11195 | continue; | |
11196 | break; | |
11197 | ||
af7ee8bf CD |
11198 | case '+': /* Opcode extension character. */ |
11199 | switch (*++args) | |
11200 | { | |
9bcd4f99 TS |
11201 | case '1': /* UDI immediates. */ |
11202 | case '2': | |
11203 | case '3': | |
11204 | case '4': | |
df58fc94 | 11205 | gas_assert (!mips_opts.micromips); |
9bcd4f99 TS |
11206 | { |
11207 | const struct mips_immed *imm = mips_immed; | |
11208 | ||
11209 | while (imm->type && imm->type != *args) | |
11210 | ++imm; | |
11211 | if (! imm->type) | |
11212 | internalError (); | |
11213 | my_getExpression (&imm_expr, s); | |
11214 | check_absolute_expr (ip, &imm_expr); | |
11215 | if ((unsigned long) imm_expr.X_add_number & ~imm->mask) | |
11216 | { | |
11217 | as_warn (_("Illegal %s number (%lu, 0x%lx)"), | |
11218 | imm->desc ? imm->desc : ip->insn_mo->name, | |
11219 | (unsigned long) imm_expr.X_add_number, | |
11220 | (unsigned long) imm_expr.X_add_number); | |
90ecf173 | 11221 | imm_expr.X_add_number &= imm->mask; |
9bcd4f99 TS |
11222 | } |
11223 | ip->insn_opcode |= ((unsigned long) imm_expr.X_add_number | |
11224 | << imm->shift); | |
11225 | imm_expr.X_op = O_absent; | |
11226 | s = expr_end; | |
11227 | } | |
11228 | continue; | |
90ecf173 | 11229 | |
071742cf CD |
11230 | case 'A': /* ins/ext position, becomes LSB. */ |
11231 | limlo = 0; | |
11232 | limhi = 31; | |
5f74bc13 CD |
11233 | goto do_lsb; |
11234 | case 'E': | |
11235 | limlo = 32; | |
11236 | limhi = 63; | |
11237 | goto do_lsb; | |
90ecf173 | 11238 | do_lsb: |
071742cf CD |
11239 | my_getExpression (&imm_expr, s); |
11240 | check_absolute_expr (ip, &imm_expr); | |
11241 | if ((unsigned long) imm_expr.X_add_number < limlo | |
11242 | || (unsigned long) imm_expr.X_add_number > limhi) | |
11243 | { | |
11244 | as_bad (_("Improper position (%lu)"), | |
11245 | (unsigned long) imm_expr.X_add_number); | |
11246 | imm_expr.X_add_number = limlo; | |
11247 | } | |
11248 | lastpos = imm_expr.X_add_number; | |
df58fc94 RS |
11249 | INSERT_OPERAND (mips_opts.micromips, |
11250 | EXTLSB, *ip, imm_expr.X_add_number); | |
071742cf CD |
11251 | imm_expr.X_op = O_absent; |
11252 | s = expr_end; | |
11253 | continue; | |
11254 | ||
11255 | case 'B': /* ins size, becomes MSB. */ | |
11256 | limlo = 1; | |
11257 | limhi = 32; | |
5f74bc13 CD |
11258 | goto do_msb; |
11259 | case 'F': | |
11260 | limlo = 33; | |
11261 | limhi = 64; | |
11262 | goto do_msb; | |
90ecf173 | 11263 | do_msb: |
071742cf CD |
11264 | my_getExpression (&imm_expr, s); |
11265 | check_absolute_expr (ip, &imm_expr); | |
11266 | /* Check for negative input so that small negative numbers | |
11267 | will not succeed incorrectly. The checks against | |
11268 | (pos+size) transitively check "size" itself, | |
11269 | assuming that "pos" is reasonable. */ | |
11270 | if ((long) imm_expr.X_add_number < 0 | |
11271 | || ((unsigned long) imm_expr.X_add_number | |
11272 | + lastpos) < limlo | |
11273 | || ((unsigned long) imm_expr.X_add_number | |
11274 | + lastpos) > limhi) | |
11275 | { | |
11276 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
11277 | (unsigned long) imm_expr.X_add_number, | |
11278 | (unsigned long) lastpos); | |
11279 | imm_expr.X_add_number = limlo - lastpos; | |
11280 | } | |
df58fc94 RS |
11281 | INSERT_OPERAND (mips_opts.micromips, INSMSB, *ip, |
11282 | lastpos + imm_expr.X_add_number - 1); | |
071742cf CD |
11283 | imm_expr.X_op = O_absent; |
11284 | s = expr_end; | |
11285 | continue; | |
11286 | ||
11287 | case 'C': /* ext size, becomes MSBD. */ | |
11288 | limlo = 1; | |
11289 | limhi = 32; | |
5f74bc13 CD |
11290 | goto do_msbd; |
11291 | case 'G': | |
11292 | limlo = 33; | |
11293 | limhi = 64; | |
11294 | goto do_msbd; | |
11295 | case 'H': | |
11296 | limlo = 33; | |
11297 | limhi = 64; | |
11298 | goto do_msbd; | |
90ecf173 | 11299 | do_msbd: |
071742cf CD |
11300 | my_getExpression (&imm_expr, s); |
11301 | check_absolute_expr (ip, &imm_expr); | |
11302 | /* Check for negative input so that small negative numbers | |
11303 | will not succeed incorrectly. The checks against | |
11304 | (pos+size) transitively check "size" itself, | |
11305 | assuming that "pos" is reasonable. */ | |
11306 | if ((long) imm_expr.X_add_number < 0 | |
11307 | || ((unsigned long) imm_expr.X_add_number | |
11308 | + lastpos) < limlo | |
11309 | || ((unsigned long) imm_expr.X_add_number | |
11310 | + lastpos) > limhi) | |
11311 | { | |
11312 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
11313 | (unsigned long) imm_expr.X_add_number, | |
11314 | (unsigned long) lastpos); | |
11315 | imm_expr.X_add_number = limlo - lastpos; | |
11316 | } | |
df58fc94 RS |
11317 | INSERT_OPERAND (mips_opts.micromips, |
11318 | EXTMSBD, *ip, imm_expr.X_add_number - 1); | |
071742cf CD |
11319 | imm_expr.X_op = O_absent; |
11320 | s = expr_end; | |
11321 | continue; | |
af7ee8bf | 11322 | |
bbcc0807 CD |
11323 | case 'D': |
11324 | /* +D is for disassembly only; never match. */ | |
11325 | break; | |
11326 | ||
5f74bc13 CD |
11327 | case 'I': |
11328 | /* "+I" is like "I", except that imm2_expr is used. */ | |
11329 | my_getExpression (&imm2_expr, s); | |
11330 | if (imm2_expr.X_op != O_big | |
11331 | && imm2_expr.X_op != O_constant) | |
11332 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
11333 | if (HAVE_32BIT_GPRS) |
11334 | normalize_constant_expr (&imm2_expr); | |
5f74bc13 CD |
11335 | s = expr_end; |
11336 | continue; | |
11337 | ||
707bfff6 | 11338 | case 'T': /* Coprocessor register. */ |
df58fc94 | 11339 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11340 | /* +T is for disassembly only; never match. */ |
11341 | break; | |
11342 | ||
707bfff6 | 11343 | case 't': /* Coprocessor register number. */ |
df58fc94 | 11344 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11345 | if (s[0] == '$' && ISDIGIT (s[1])) |
11346 | { | |
11347 | ++s; | |
11348 | regno = 0; | |
11349 | do | |
11350 | { | |
11351 | regno *= 10; | |
11352 | regno += *s - '0'; | |
11353 | ++s; | |
11354 | } | |
11355 | while (ISDIGIT (*s)); | |
11356 | if (regno > 31) | |
11357 | as_bad (_("Invalid register number (%d)"), regno); | |
11358 | else | |
11359 | { | |
df58fc94 | 11360 | INSERT_OPERAND (0, RT, *ip, regno); |
ef2e4d86 CF |
11361 | continue; |
11362 | } | |
11363 | } | |
11364 | else | |
11365 | as_bad (_("Invalid coprocessor 0 register number")); | |
11366 | break; | |
11367 | ||
bb35fb24 NC |
11368 | case 'x': |
11369 | /* bbit[01] and bbit[01]32 bit index. Give error if index | |
11370 | is not in the valid range. */ | |
df58fc94 | 11371 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11372 | my_getExpression (&imm_expr, s); |
11373 | check_absolute_expr (ip, &imm_expr); | |
11374 | if ((unsigned) imm_expr.X_add_number > 31) | |
11375 | { | |
11376 | as_bad (_("Improper bit index (%lu)"), | |
11377 | (unsigned long) imm_expr.X_add_number); | |
11378 | imm_expr.X_add_number = 0; | |
11379 | } | |
df58fc94 | 11380 | INSERT_OPERAND (0, BBITIND, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11381 | imm_expr.X_op = O_absent; |
11382 | s = expr_end; | |
11383 | continue; | |
11384 | ||
11385 | case 'X': | |
11386 | /* bbit[01] bit index when bbit is used but we generate | |
11387 | bbit[01]32 because the index is over 32. Move to the | |
11388 | next candidate if index is not in the valid range. */ | |
df58fc94 | 11389 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11390 | my_getExpression (&imm_expr, s); |
11391 | check_absolute_expr (ip, &imm_expr); | |
11392 | if ((unsigned) imm_expr.X_add_number < 32 | |
11393 | || (unsigned) imm_expr.X_add_number > 63) | |
11394 | break; | |
df58fc94 | 11395 | INSERT_OPERAND (0, BBITIND, *ip, imm_expr.X_add_number - 32); |
bb35fb24 NC |
11396 | imm_expr.X_op = O_absent; |
11397 | s = expr_end; | |
11398 | continue; | |
11399 | ||
11400 | case 'p': | |
11401 | /* cins, cins32, exts and exts32 position field. Give error | |
11402 | if it's not in the valid range. */ | |
df58fc94 | 11403 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11404 | my_getExpression (&imm_expr, s); |
11405 | check_absolute_expr (ip, &imm_expr); | |
11406 | if ((unsigned) imm_expr.X_add_number > 31) | |
11407 | { | |
11408 | as_bad (_("Improper position (%lu)"), | |
11409 | (unsigned long) imm_expr.X_add_number); | |
11410 | imm_expr.X_add_number = 0; | |
11411 | } | |
11412 | /* Make the pos explicit to simplify +S. */ | |
11413 | lastpos = imm_expr.X_add_number + 32; | |
df58fc94 | 11414 | INSERT_OPERAND (0, CINSPOS, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11415 | imm_expr.X_op = O_absent; |
11416 | s = expr_end; | |
11417 | continue; | |
11418 | ||
11419 | case 'P': | |
11420 | /* cins, cins32, exts and exts32 position field. Move to | |
11421 | the next candidate if it's not in the valid range. */ | |
df58fc94 | 11422 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11423 | my_getExpression (&imm_expr, s); |
11424 | check_absolute_expr (ip, &imm_expr); | |
11425 | if ((unsigned) imm_expr.X_add_number < 32 | |
11426 | || (unsigned) imm_expr.X_add_number > 63) | |
11427 | break; | |
11428 | lastpos = imm_expr.X_add_number; | |
df58fc94 | 11429 | INSERT_OPERAND (0, CINSPOS, *ip, imm_expr.X_add_number - 32); |
bb35fb24 NC |
11430 | imm_expr.X_op = O_absent; |
11431 | s = expr_end; | |
11432 | continue; | |
11433 | ||
11434 | case 's': | |
11435 | /* cins and exts length-minus-one field. */ | |
df58fc94 | 11436 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11437 | my_getExpression (&imm_expr, s); |
11438 | check_absolute_expr (ip, &imm_expr); | |
11439 | if ((unsigned long) imm_expr.X_add_number > 31) | |
11440 | { | |
11441 | as_bad (_("Improper size (%lu)"), | |
11442 | (unsigned long) imm_expr.X_add_number); | |
11443 | imm_expr.X_add_number = 0; | |
11444 | } | |
df58fc94 | 11445 | INSERT_OPERAND (0, CINSLM1, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11446 | imm_expr.X_op = O_absent; |
11447 | s = expr_end; | |
11448 | continue; | |
11449 | ||
11450 | case 'S': | |
11451 | /* cins32/exts32 and cins/exts aliasing cint32/exts32 | |
11452 | length-minus-one field. */ | |
df58fc94 | 11453 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11454 | my_getExpression (&imm_expr, s); |
11455 | check_absolute_expr (ip, &imm_expr); | |
11456 | if ((long) imm_expr.X_add_number < 0 | |
11457 | || (unsigned long) imm_expr.X_add_number + lastpos > 63) | |
11458 | { | |
11459 | as_bad (_("Improper size (%lu)"), | |
11460 | (unsigned long) imm_expr.X_add_number); | |
11461 | imm_expr.X_add_number = 0; | |
11462 | } | |
df58fc94 | 11463 | INSERT_OPERAND (0, CINSLM1, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11464 | imm_expr.X_op = O_absent; |
11465 | s = expr_end; | |
11466 | continue; | |
11467 | ||
dd3cbb7e NC |
11468 | case 'Q': |
11469 | /* seqi/snei immediate field. */ | |
df58fc94 | 11470 | gas_assert (!mips_opts.micromips); |
dd3cbb7e NC |
11471 | my_getExpression (&imm_expr, s); |
11472 | check_absolute_expr (ip, &imm_expr); | |
11473 | if ((long) imm_expr.X_add_number < -512 | |
11474 | || (long) imm_expr.X_add_number >= 512) | |
11475 | { | |
11476 | as_bad (_("Improper immediate (%ld)"), | |
11477 | (long) imm_expr.X_add_number); | |
11478 | imm_expr.X_add_number = 0; | |
11479 | } | |
df58fc94 | 11480 | INSERT_OPERAND (0, SEQI, *ip, imm_expr.X_add_number); |
dd3cbb7e NC |
11481 | imm_expr.X_op = O_absent; |
11482 | s = expr_end; | |
11483 | continue; | |
11484 | ||
98675402 | 11485 | case 'a': /* 8-bit signed offset in bit 6 */ |
df58fc94 | 11486 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11487 | my_getExpression (&imm_expr, s); |
11488 | check_absolute_expr (ip, &imm_expr); | |
11489 | min_range = -((OP_MASK_OFFSET_A + 1) >> 1); | |
11490 | max_range = ((OP_MASK_OFFSET_A + 1) >> 1) - 1; | |
11491 | if (imm_expr.X_add_number < min_range | |
11492 | || imm_expr.X_add_number > max_range) | |
11493 | { | |
c95354ed | 11494 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11495 | (long) min_range, (long) max_range, |
11496 | (long) imm_expr.X_add_number); | |
11497 | } | |
df58fc94 | 11498 | INSERT_OPERAND (0, OFFSET_A, *ip, imm_expr.X_add_number); |
98675402 RS |
11499 | imm_expr.X_op = O_absent; |
11500 | s = expr_end; | |
11501 | continue; | |
11502 | ||
11503 | case 'b': /* 8-bit signed offset in bit 3 */ | |
df58fc94 | 11504 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11505 | my_getExpression (&imm_expr, s); |
11506 | check_absolute_expr (ip, &imm_expr); | |
11507 | min_range = -((OP_MASK_OFFSET_B + 1) >> 1); | |
11508 | max_range = ((OP_MASK_OFFSET_B + 1) >> 1) - 1; | |
11509 | if (imm_expr.X_add_number < min_range | |
11510 | || imm_expr.X_add_number > max_range) | |
11511 | { | |
c95354ed | 11512 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11513 | (long) min_range, (long) max_range, |
11514 | (long) imm_expr.X_add_number); | |
11515 | } | |
df58fc94 | 11516 | INSERT_OPERAND (0, OFFSET_B, *ip, imm_expr.X_add_number); |
98675402 RS |
11517 | imm_expr.X_op = O_absent; |
11518 | s = expr_end; | |
11519 | continue; | |
11520 | ||
11521 | case 'c': /* 9-bit signed offset in bit 6 */ | |
df58fc94 | 11522 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11523 | my_getExpression (&imm_expr, s); |
11524 | check_absolute_expr (ip, &imm_expr); | |
11525 | min_range = -((OP_MASK_OFFSET_C + 1) >> 1); | |
11526 | max_range = ((OP_MASK_OFFSET_C + 1) >> 1) - 1; | |
c95354ed MX |
11527 | /* We check the offset range before adjusted. */ |
11528 | min_range <<= 4; | |
11529 | max_range <<= 4; | |
98675402 RS |
11530 | if (imm_expr.X_add_number < min_range |
11531 | || imm_expr.X_add_number > max_range) | |
11532 | { | |
c95354ed | 11533 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11534 | (long) min_range, (long) max_range, |
11535 | (long) imm_expr.X_add_number); | |
11536 | } | |
c95354ed MX |
11537 | if (imm_expr.X_add_number & 0xf) |
11538 | { | |
11539 | as_bad (_("Offset not 16 bytes alignment (%ld)"), | |
11540 | (long) imm_expr.X_add_number); | |
11541 | } | |
11542 | /* Right shift 4 bits to adjust the offset operand. */ | |
df58fc94 RS |
11543 | INSERT_OPERAND (0, OFFSET_C, *ip, |
11544 | imm_expr.X_add_number >> 4); | |
98675402 RS |
11545 | imm_expr.X_op = O_absent; |
11546 | s = expr_end; | |
11547 | continue; | |
11548 | ||
11549 | case 'z': | |
df58fc94 | 11550 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11551 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) |
11552 | break; | |
11553 | if (regno == AT && mips_opts.at) | |
11554 | { | |
11555 | if (mips_opts.at == ATREG) | |
11556 | as_warn (_("used $at without \".set noat\"")); | |
11557 | else | |
11558 | as_warn (_("used $%u with \".set at=$%u\""), | |
11559 | regno, mips_opts.at); | |
11560 | } | |
df58fc94 | 11561 | INSERT_OPERAND (0, RZ, *ip, regno); |
98675402 RS |
11562 | continue; |
11563 | ||
11564 | case 'Z': | |
df58fc94 | 11565 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11566 | if (!reg_lookup (&s, RTYPE_FPU, ®no)) |
11567 | break; | |
df58fc94 | 11568 | INSERT_OPERAND (0, FZ, *ip, regno); |
98675402 RS |
11569 | continue; |
11570 | ||
af7ee8bf | 11571 | default: |
df58fc94 | 11572 | as_bad (_("Internal error: bad %s opcode " |
90ecf173 | 11573 | "(unknown extension operand type `+%c'): %s %s"), |
df58fc94 | 11574 | mips_opts.micromips ? "microMIPS" : "MIPS", |
90ecf173 | 11575 | *args, insn->name, insn->args); |
af7ee8bf CD |
11576 | /* Further processing is fruitless. */ |
11577 | return; | |
11578 | } | |
11579 | break; | |
11580 | ||
df58fc94 | 11581 | case '.': /* 10-bit offset. */ |
df58fc94 | 11582 | gas_assert (mips_opts.micromips); |
dec0624d | 11583 | case '~': /* 12-bit offset. */ |
df58fc94 RS |
11584 | { |
11585 | int shift = *args == '.' ? 9 : 11; | |
11586 | size_t i; | |
11587 | ||
11588 | /* Check whether there is only a single bracketed expression | |
11589 | left. If so, it must be the base register and the | |
11590 | constant must be zero. */ | |
11591 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
11592 | continue; | |
11593 | ||
11594 | /* If this value won't fit into the offset, then go find | |
11595 | a macro that will generate a 16- or 32-bit offset code | |
11596 | pattern. */ | |
11597 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); | |
11598 | if ((i == 0 && (imm_expr.X_op != O_constant | |
11599 | || imm_expr.X_add_number >= 1 << shift | |
11600 | || imm_expr.X_add_number < -1 << shift)) | |
11601 | || i > 0) | |
11602 | { | |
11603 | imm_expr.X_op = O_absent; | |
11604 | break; | |
11605 | } | |
11606 | if (shift == 9) | |
11607 | INSERT_OPERAND (1, OFFSET10, *ip, imm_expr.X_add_number); | |
11608 | else | |
dec0624d MR |
11609 | INSERT_OPERAND (mips_opts.micromips, |
11610 | OFFSET12, *ip, imm_expr.X_add_number); | |
df58fc94 RS |
11611 | imm_expr.X_op = O_absent; |
11612 | s = expr_end; | |
11613 | } | |
11614 | continue; | |
11615 | ||
252b5132 RH |
11616 | case '<': /* must be at least one digit */ |
11617 | /* | |
11618 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
11619 | * than 31 or less than 0, then the shift amount should be |
11620 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
11621 | * We issue a warning and mask out all but the low 5 bits. |
11622 | */ | |
11623 | my_getExpression (&imm_expr, s); | |
11624 | check_absolute_expr (ip, &imm_expr); | |
11625 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
11626 | as_warn (_("Improper shift amount (%lu)"), |
11627 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 RS |
11628 | INSERT_OPERAND (mips_opts.micromips, |
11629 | SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
11630 | imm_expr.X_op = O_absent; |
11631 | s = expr_end; | |
11632 | continue; | |
11633 | ||
11634 | case '>': /* shift amount minus 32 */ | |
11635 | my_getExpression (&imm_expr, s); | |
11636 | check_absolute_expr (ip, &imm_expr); | |
11637 | if ((unsigned long) imm_expr.X_add_number < 32 | |
11638 | || (unsigned long) imm_expr.X_add_number > 63) | |
11639 | break; | |
df58fc94 RS |
11640 | INSERT_OPERAND (mips_opts.micromips, |
11641 | SHAMT, *ip, imm_expr.X_add_number - 32); | |
252b5132 RH |
11642 | imm_expr.X_op = O_absent; |
11643 | s = expr_end; | |
11644 | continue; | |
11645 | ||
90ecf173 MR |
11646 | case 'k': /* CACHE code. */ |
11647 | case 'h': /* PREFX code. */ | |
11648 | case '1': /* SYNC type. */ | |
252b5132 RH |
11649 | my_getExpression (&imm_expr, s); |
11650 | check_absolute_expr (ip, &imm_expr); | |
11651 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
11652 | as_warn (_("Invalid value for `%s' (%lu)"), |
11653 | ip->insn_mo->name, | |
11654 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11655 | switch (*args) |
d954098f | 11656 | { |
df58fc94 RS |
11657 | case 'k': |
11658 | if (mips_fix_cn63xxp1 | |
11659 | && !mips_opts.micromips | |
11660 | && strcmp ("pref", insn->name) == 0) | |
d954098f DD |
11661 | switch (imm_expr.X_add_number) |
11662 | { | |
11663 | case 5: | |
11664 | case 25: | |
11665 | case 26: | |
11666 | case 27: | |
11667 | case 28: | |
11668 | case 29: | |
11669 | case 30: | |
11670 | case 31: /* These are ok. */ | |
11671 | break; | |
11672 | ||
11673 | default: /* The rest must be changed to 28. */ | |
11674 | imm_expr.X_add_number = 28; | |
11675 | break; | |
11676 | } | |
df58fc94 RS |
11677 | INSERT_OPERAND (mips_opts.micromips, |
11678 | CACHE, *ip, imm_expr.X_add_number); | |
11679 | break; | |
11680 | case 'h': | |
11681 | INSERT_OPERAND (mips_opts.micromips, | |
11682 | PREFX, *ip, imm_expr.X_add_number); | |
11683 | break; | |
11684 | case '1': | |
11685 | INSERT_OPERAND (mips_opts.micromips, | |
11686 | STYPE, *ip, imm_expr.X_add_number); | |
11687 | break; | |
d954098f | 11688 | } |
252b5132 RH |
11689 | imm_expr.X_op = O_absent; |
11690 | s = expr_end; | |
11691 | continue; | |
11692 | ||
90ecf173 | 11693 | case 'c': /* BREAK code. */ |
df58fc94 RS |
11694 | { |
11695 | unsigned long mask = (mips_opts.micromips | |
11696 | ? MICROMIPSOP_MASK_CODE | |
11697 | : OP_MASK_CODE); | |
11698 | ||
11699 | my_getExpression (&imm_expr, s); | |
11700 | check_absolute_expr (ip, &imm_expr); | |
11701 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11702 | as_warn (_("Code for %s not in range 0..%lu (%lu)"), | |
11703 | ip->insn_mo->name, | |
11704 | mask, (unsigned long) imm_expr.X_add_number); | |
11705 | INSERT_OPERAND (mips_opts.micromips, | |
11706 | CODE, *ip, imm_expr.X_add_number); | |
11707 | imm_expr.X_op = O_absent; | |
11708 | s = expr_end; | |
11709 | } | |
252b5132 RH |
11710 | continue; |
11711 | ||
90ecf173 | 11712 | case 'q': /* Lower BREAK code. */ |
df58fc94 RS |
11713 | { |
11714 | unsigned long mask = (mips_opts.micromips | |
11715 | ? MICROMIPSOP_MASK_CODE2 | |
11716 | : OP_MASK_CODE2); | |
11717 | ||
11718 | my_getExpression (&imm_expr, s); | |
11719 | check_absolute_expr (ip, &imm_expr); | |
11720 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11721 | as_warn (_("Lower code for %s not in range 0..%lu (%lu)"), | |
11722 | ip->insn_mo->name, | |
11723 | mask, (unsigned long) imm_expr.X_add_number); | |
11724 | INSERT_OPERAND (mips_opts.micromips, | |
11725 | CODE2, *ip, imm_expr.X_add_number); | |
11726 | imm_expr.X_op = O_absent; | |
11727 | s = expr_end; | |
11728 | } | |
252b5132 RH |
11729 | continue; |
11730 | ||
df58fc94 RS |
11731 | case 'B': /* 20- or 10-bit syscall/break/wait code. */ |
11732 | { | |
11733 | unsigned long mask = (mips_opts.micromips | |
11734 | ? MICROMIPSOP_MASK_CODE10 | |
11735 | : OP_MASK_CODE20); | |
11736 | ||
11737 | my_getExpression (&imm_expr, s); | |
11738 | check_absolute_expr (ip, &imm_expr); | |
11739 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11740 | as_warn (_("Code for %s not in range 0..%lu (%lu)"), | |
11741 | ip->insn_mo->name, | |
11742 | mask, (unsigned long) imm_expr.X_add_number); | |
11743 | if (mips_opts.micromips) | |
11744 | INSERT_OPERAND (1, CODE10, *ip, imm_expr.X_add_number); | |
11745 | else | |
11746 | INSERT_OPERAND (0, CODE20, *ip, imm_expr.X_add_number); | |
11747 | imm_expr.X_op = O_absent; | |
11748 | s = expr_end; | |
11749 | } | |
252b5132 RH |
11750 | continue; |
11751 | ||
df58fc94 RS |
11752 | case 'C': /* 25- or 23-bit coprocessor code. */ |
11753 | { | |
11754 | unsigned long mask = (mips_opts.micromips | |
11755 | ? MICROMIPSOP_MASK_COPZ | |
11756 | : OP_MASK_COPZ); | |
11757 | ||
11758 | my_getExpression (&imm_expr, s); | |
11759 | check_absolute_expr (ip, &imm_expr); | |
11760 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11761 | as_warn (_("Coproccesor code > %u bits (%lu)"), | |
11762 | mips_opts.micromips ? 23U : 25U, | |
793b27f4 | 11763 | (unsigned long) imm_expr.X_add_number); |
df58fc94 RS |
11764 | INSERT_OPERAND (mips_opts.micromips, |
11765 | COPZ, *ip, imm_expr.X_add_number); | |
11766 | imm_expr.X_op = O_absent; | |
11767 | s = expr_end; | |
11768 | } | |
beae10d5 | 11769 | continue; |
252b5132 | 11770 | |
df58fc94 RS |
11771 | case 'J': /* 19-bit WAIT code. */ |
11772 | gas_assert (!mips_opts.micromips); | |
4372b673 NC |
11773 | my_getExpression (&imm_expr, s); |
11774 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 11775 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
df58fc94 RS |
11776 | { |
11777 | as_warn (_("Illegal 19-bit code (%lu)"), | |
a9e24354 | 11778 | (unsigned long) imm_expr.X_add_number); |
df58fc94 RS |
11779 | imm_expr.X_add_number &= OP_MASK_CODE19; |
11780 | } | |
11781 | INSERT_OPERAND (0, CODE19, *ip, imm_expr.X_add_number); | |
4372b673 NC |
11782 | imm_expr.X_op = O_absent; |
11783 | s = expr_end; | |
11784 | continue; | |
11785 | ||
707bfff6 | 11786 | case 'P': /* Performance register. */ |
df58fc94 | 11787 | gas_assert (!mips_opts.micromips); |
beae10d5 | 11788 | my_getExpression (&imm_expr, s); |
252b5132 | 11789 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 11790 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
bf12938e RS |
11791 | as_warn (_("Invalid performance register (%lu)"), |
11792 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11793 | INSERT_OPERAND (0, PERFREG, *ip, imm_expr.X_add_number); |
beae10d5 KH |
11794 | imm_expr.X_op = O_absent; |
11795 | s = expr_end; | |
11796 | continue; | |
252b5132 | 11797 | |
707bfff6 | 11798 | case 'G': /* Coprocessor destination register. */ |
df58fc94 RS |
11799 | { |
11800 | unsigned long opcode = ip->insn_opcode; | |
11801 | unsigned long mask; | |
11802 | unsigned int types; | |
11803 | int cop0; | |
11804 | ||
11805 | if (mips_opts.micromips) | |
11806 | { | |
11807 | mask = ~((MICROMIPSOP_MASK_RT << MICROMIPSOP_SH_RT) | |
11808 | | (MICROMIPSOP_MASK_RS << MICROMIPSOP_SH_RS) | |
11809 | | (MICROMIPSOP_MASK_SEL << MICROMIPSOP_SH_SEL)); | |
11810 | opcode &= mask; | |
11811 | switch (opcode) | |
11812 | { | |
11813 | case 0x000000fc: /* mfc0 */ | |
11814 | case 0x000002fc: /* mtc0 */ | |
11815 | case 0x580000fc: /* dmfc0 */ | |
11816 | case 0x580002fc: /* dmtc0 */ | |
11817 | cop0 = 1; | |
11818 | break; | |
11819 | default: | |
11820 | cop0 = 0; | |
11821 | break; | |
11822 | } | |
11823 | } | |
11824 | else | |
11825 | { | |
11826 | opcode = (opcode >> OP_SH_OP) & OP_MASK_OP; | |
11827 | cop0 = opcode == OP_OP_COP0; | |
11828 | } | |
11829 | types = RTYPE_NUM | (cop0 ? RTYPE_CP0 : RTYPE_GP); | |
11830 | ok = reg_lookup (&s, types, ®no); | |
11831 | if (mips_opts.micromips) | |
11832 | INSERT_OPERAND (1, RS, *ip, regno); | |
11833 | else | |
11834 | INSERT_OPERAND (0, RD, *ip, regno); | |
11835 | if (ok) | |
11836 | { | |
11837 | lastregno = regno; | |
11838 | continue; | |
11839 | } | |
11840 | } | |
11841 | break; | |
707bfff6 | 11842 | |
df58fc94 RS |
11843 | case 'y': /* ALNV.PS source register. */ |
11844 | gas_assert (mips_opts.micromips); | |
11845 | goto do_reg; | |
11846 | case 'x': /* Ignore register name. */ | |
11847 | case 'U': /* Destination register (CLO/CLZ). */ | |
11848 | case 'g': /* Coprocessor destination register. */ | |
11849 | gas_assert (!mips_opts.micromips); | |
90ecf173 MR |
11850 | case 'b': /* Base register. */ |
11851 | case 'd': /* Destination register. */ | |
11852 | case 's': /* Source register. */ | |
11853 | case 't': /* Target register. */ | |
11854 | case 'r': /* Both target and source. */ | |
11855 | case 'v': /* Both dest and source. */ | |
11856 | case 'w': /* Both dest and target. */ | |
11857 | case 'E': /* Coprocessor target register. */ | |
11858 | case 'K': /* RDHWR destination register. */ | |
90ecf173 | 11859 | case 'z': /* Must be zero register. */ |
df58fc94 | 11860 | do_reg: |
90ecf173 | 11861 | s_reset = s; |
707bfff6 TS |
11862 | if (*args == 'E' || *args == 'K') |
11863 | ok = reg_lookup (&s, RTYPE_NUM, ®no); | |
11864 | else | |
11865 | { | |
11866 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
741fe287 MR |
11867 | if (regno == AT && mips_opts.at) |
11868 | { | |
11869 | if (mips_opts.at == ATREG) | |
f71d0d44 | 11870 | as_warn (_("Used $at without \".set noat\"")); |
741fe287 | 11871 | else |
f71d0d44 | 11872 | as_warn (_("Used $%u with \".set at=$%u\""), |
741fe287 MR |
11873 | regno, mips_opts.at); |
11874 | } | |
707bfff6 TS |
11875 | } |
11876 | if (ok) | |
252b5132 | 11877 | { |
252b5132 RH |
11878 | c = *args; |
11879 | if (*s == ' ') | |
f9419b05 | 11880 | ++s; |
252b5132 RH |
11881 | if (args[1] != *s) |
11882 | { | |
11883 | if (c == 'r' || c == 'v' || c == 'w') | |
11884 | { | |
11885 | regno = lastregno; | |
11886 | s = s_reset; | |
f9419b05 | 11887 | ++args; |
252b5132 RH |
11888 | } |
11889 | } | |
11890 | /* 'z' only matches $0. */ | |
11891 | if (c == 'z' && regno != 0) | |
11892 | break; | |
11893 | ||
24864476 | 11894 | if (c == 's' && !strncmp (ip->insn_mo->name, "jalr", 4)) |
e7c604dd CM |
11895 | { |
11896 | if (regno == lastregno) | |
90ecf173 MR |
11897 | { |
11898 | insn_error | |
f71d0d44 | 11899 | = _("Source and destination must be different"); |
e7c604dd | 11900 | continue; |
90ecf173 | 11901 | } |
24864476 | 11902 | if (regno == 31 && lastregno == 0xffffffff) |
90ecf173 MR |
11903 | { |
11904 | insn_error | |
f71d0d44 | 11905 | = _("A destination register must be supplied"); |
e7c604dd | 11906 | continue; |
90ecf173 | 11907 | } |
e7c604dd | 11908 | } |
90ecf173 MR |
11909 | /* Now that we have assembled one operand, we use the args |
11910 | string to figure out where it goes in the instruction. */ | |
252b5132 RH |
11911 | switch (c) |
11912 | { | |
11913 | case 'r': | |
11914 | case 's': | |
11915 | case 'v': | |
11916 | case 'b': | |
df58fc94 | 11917 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, regno); |
252b5132 | 11918 | break; |
df58fc94 | 11919 | |
af7ee8bf | 11920 | case 'K': |
df58fc94 RS |
11921 | if (mips_opts.micromips) |
11922 | INSERT_OPERAND (1, RS, *ip, regno); | |
11923 | else | |
11924 | INSERT_OPERAND (0, RD, *ip, regno); | |
11925 | break; | |
11926 | ||
11927 | case 'd': | |
ef2e4d86 | 11928 | case 'g': |
df58fc94 | 11929 | INSERT_OPERAND (mips_opts.micromips, RD, *ip, regno); |
252b5132 | 11930 | break; |
df58fc94 | 11931 | |
4372b673 | 11932 | case 'U': |
df58fc94 RS |
11933 | gas_assert (!mips_opts.micromips); |
11934 | INSERT_OPERAND (0, RD, *ip, regno); | |
11935 | INSERT_OPERAND (0, RT, *ip, regno); | |
4372b673 | 11936 | break; |
df58fc94 | 11937 | |
252b5132 RH |
11938 | case 'w': |
11939 | case 't': | |
11940 | case 'E': | |
df58fc94 RS |
11941 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, regno); |
11942 | break; | |
11943 | ||
11944 | case 'y': | |
11945 | gas_assert (mips_opts.micromips); | |
11946 | INSERT_OPERAND (1, RS3, *ip, regno); | |
252b5132 | 11947 | break; |
df58fc94 | 11948 | |
252b5132 RH |
11949 | case 'x': |
11950 | /* This case exists because on the r3000 trunc | |
11951 | expands into a macro which requires a gp | |
11952 | register. On the r6000 or r4000 it is | |
11953 | assembled into a single instruction which | |
11954 | ignores the register. Thus the insn version | |
11955 | is MIPS_ISA2 and uses 'x', and the macro | |
11956 | version is MIPS_ISA1 and uses 't'. */ | |
11957 | break; | |
df58fc94 | 11958 | |
252b5132 RH |
11959 | case 'z': |
11960 | /* This case is for the div instruction, which | |
11961 | acts differently if the destination argument | |
11962 | is $0. This only matches $0, and is checked | |
11963 | outside the switch. */ | |
11964 | break; | |
252b5132 RH |
11965 | } |
11966 | lastregno = regno; | |
11967 | continue; | |
11968 | } | |
252b5132 RH |
11969 | switch (*args++) |
11970 | { | |
11971 | case 'r': | |
11972 | case 'v': | |
df58fc94 | 11973 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, lastregno); |
252b5132 | 11974 | continue; |
df58fc94 | 11975 | |
252b5132 | 11976 | case 'w': |
df58fc94 | 11977 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, lastregno); |
252b5132 RH |
11978 | continue; |
11979 | } | |
11980 | break; | |
11981 | ||
deec1734 | 11982 | case 'O': /* MDMX alignment immediate constant. */ |
df58fc94 | 11983 | gas_assert (!mips_opts.micromips); |
deec1734 CD |
11984 | my_getExpression (&imm_expr, s); |
11985 | check_absolute_expr (ip, &imm_expr); | |
11986 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
20203fb9 | 11987 | as_warn (_("Improper align amount (%ld), using low bits"), |
bf12938e | 11988 | (long) imm_expr.X_add_number); |
df58fc94 | 11989 | INSERT_OPERAND (0, ALN, *ip, imm_expr.X_add_number); |
deec1734 CD |
11990 | imm_expr.X_op = O_absent; |
11991 | s = expr_end; | |
11992 | continue; | |
11993 | ||
11994 | case 'Q': /* MDMX vector, element sel, or const. */ | |
11995 | if (s[0] != '$') | |
11996 | { | |
11997 | /* MDMX Immediate. */ | |
df58fc94 | 11998 | gas_assert (!mips_opts.micromips); |
deec1734 CD |
11999 | my_getExpression (&imm_expr, s); |
12000 | check_absolute_expr (ip, &imm_expr); | |
12001 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
bf12938e RS |
12002 | as_warn (_("Invalid MDMX Immediate (%ld)"), |
12003 | (long) imm_expr.X_add_number); | |
df58fc94 | 12004 | INSERT_OPERAND (0, FT, *ip, imm_expr.X_add_number); |
deec1734 CD |
12005 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) |
12006 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
12007 | else | |
12008 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
deec1734 CD |
12009 | imm_expr.X_op = O_absent; |
12010 | s = expr_end; | |
12011 | continue; | |
12012 | } | |
12013 | /* Not MDMX Immediate. Fall through. */ | |
12014 | case 'X': /* MDMX destination register. */ | |
12015 | case 'Y': /* MDMX source register. */ | |
12016 | case 'Z': /* MDMX target register. */ | |
12017 | is_mdmx = 1; | |
df58fc94 RS |
12018 | case 'W': |
12019 | gas_assert (!mips_opts.micromips); | |
90ecf173 MR |
12020 | case 'D': /* Floating point destination register. */ |
12021 | case 'S': /* Floating point source register. */ | |
12022 | case 'T': /* Floating point target register. */ | |
12023 | case 'R': /* Floating point source register. */ | |
252b5132 | 12024 | case 'V': |
707bfff6 TS |
12025 | rtype = RTYPE_FPU; |
12026 | if (is_mdmx | |
12027 | || (mips_opts.ase_mdmx | |
12028 | && (ip->insn_mo->pinfo & FP_D) | |
12029 | && (ip->insn_mo->pinfo & (INSN_COPROC_MOVE_DELAY | |
12030 | | INSN_COPROC_MEMORY_DELAY | |
12031 | | INSN_LOAD_COPROC_DELAY | |
12032 | | INSN_LOAD_MEMORY_DELAY | |
12033 | | INSN_STORE_MEMORY)))) | |
12034 | rtype |= RTYPE_VEC; | |
252b5132 | 12035 | s_reset = s; |
707bfff6 | 12036 | if (reg_lookup (&s, rtype, ®no)) |
252b5132 | 12037 | { |
252b5132 | 12038 | if ((regno & 1) != 0 |
ca4e0257 | 12039 | && HAVE_32BIT_FPRS |
90ecf173 | 12040 | && !mips_oddfpreg_ok (ip->insn_mo, argnum)) |
252b5132 RH |
12041 | as_warn (_("Float register should be even, was %d"), |
12042 | regno); | |
12043 | ||
12044 | c = *args; | |
12045 | if (*s == ' ') | |
f9419b05 | 12046 | ++s; |
252b5132 RH |
12047 | if (args[1] != *s) |
12048 | { | |
12049 | if (c == 'V' || c == 'W') | |
12050 | { | |
12051 | regno = lastregno; | |
12052 | s = s_reset; | |
f9419b05 | 12053 | ++args; |
252b5132 RH |
12054 | } |
12055 | } | |
12056 | switch (c) | |
12057 | { | |
12058 | case 'D': | |
deec1734 | 12059 | case 'X': |
df58fc94 | 12060 | INSERT_OPERAND (mips_opts.micromips, FD, *ip, regno); |
252b5132 | 12061 | break; |
df58fc94 | 12062 | |
252b5132 RH |
12063 | case 'V': |
12064 | case 'S': | |
deec1734 | 12065 | case 'Y': |
df58fc94 | 12066 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, regno); |
252b5132 | 12067 | break; |
df58fc94 | 12068 | |
deec1734 CD |
12069 | case 'Q': |
12070 | /* This is like 'Z', but also needs to fix the MDMX | |
12071 | vector/scalar select bits. Note that the | |
12072 | scalar immediate case is handled above. */ | |
12073 | if (*s == '[') | |
12074 | { | |
12075 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
12076 | int max_el = (is_qh ? 3 : 7); | |
12077 | s++; | |
12078 | my_getExpression(&imm_expr, s); | |
12079 | check_absolute_expr (ip, &imm_expr); | |
12080 | s = expr_end; | |
12081 | if (imm_expr.X_add_number > max_el) | |
20203fb9 NC |
12082 | as_bad (_("Bad element selector %ld"), |
12083 | (long) imm_expr.X_add_number); | |
deec1734 CD |
12084 | imm_expr.X_add_number &= max_el; |
12085 | ip->insn_opcode |= (imm_expr.X_add_number | |
12086 | << (OP_SH_VSEL + | |
12087 | (is_qh ? 2 : 1))); | |
01a3f561 | 12088 | imm_expr.X_op = O_absent; |
deec1734 | 12089 | if (*s != ']') |
20203fb9 | 12090 | as_warn (_("Expecting ']' found '%s'"), s); |
deec1734 CD |
12091 | else |
12092 | s++; | |
12093 | } | |
12094 | else | |
12095 | { | |
12096 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
12097 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
12098 | << OP_SH_VSEL); | |
12099 | else | |
12100 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
12101 | OP_SH_VSEL); | |
12102 | } | |
90ecf173 | 12103 | /* Fall through. */ |
252b5132 RH |
12104 | case 'W': |
12105 | case 'T': | |
deec1734 | 12106 | case 'Z': |
df58fc94 | 12107 | INSERT_OPERAND (mips_opts.micromips, FT, *ip, regno); |
252b5132 | 12108 | break; |
df58fc94 | 12109 | |
252b5132 | 12110 | case 'R': |
df58fc94 | 12111 | INSERT_OPERAND (mips_opts.micromips, FR, *ip, regno); |
252b5132 RH |
12112 | break; |
12113 | } | |
12114 | lastregno = regno; | |
12115 | continue; | |
12116 | } | |
12117 | ||
252b5132 RH |
12118 | switch (*args++) |
12119 | { | |
12120 | case 'V': | |
df58fc94 | 12121 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, lastregno); |
252b5132 | 12122 | continue; |
df58fc94 | 12123 | |
252b5132 | 12124 | case 'W': |
df58fc94 | 12125 | INSERT_OPERAND (mips_opts.micromips, FT, *ip, lastregno); |
252b5132 RH |
12126 | continue; |
12127 | } | |
12128 | break; | |
12129 | ||
12130 | case 'I': | |
12131 | my_getExpression (&imm_expr, s); | |
12132 | if (imm_expr.X_op != O_big | |
12133 | && imm_expr.X_op != O_constant) | |
12134 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
12135 | if (HAVE_32BIT_GPRS) |
12136 | normalize_constant_expr (&imm_expr); | |
252b5132 RH |
12137 | s = expr_end; |
12138 | continue; | |
12139 | ||
12140 | case 'A': | |
12141 | my_getExpression (&offset_expr, s); | |
2051e8c4 | 12142 | normalize_address_expr (&offset_expr); |
f6688943 | 12143 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
12144 | s = expr_end; |
12145 | continue; | |
12146 | ||
12147 | case 'F': | |
12148 | case 'L': | |
12149 | case 'f': | |
12150 | case 'l': | |
12151 | { | |
12152 | int f64; | |
ca4e0257 | 12153 | int using_gprs; |
252b5132 RH |
12154 | char *save_in; |
12155 | char *err; | |
12156 | unsigned char temp[8]; | |
12157 | int len; | |
12158 | unsigned int length; | |
12159 | segT seg; | |
12160 | subsegT subseg; | |
12161 | char *p; | |
12162 | ||
12163 | /* These only appear as the last operand in an | |
12164 | instruction, and every instruction that accepts | |
12165 | them in any variant accepts them in all variants. | |
12166 | This means we don't have to worry about backing out | |
12167 | any changes if the instruction does not match. | |
12168 | ||
12169 | The difference between them is the size of the | |
12170 | floating point constant and where it goes. For 'F' | |
12171 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
12172 | is 32 bits. Where the constant is placed is based | |
12173 | on how the MIPS assembler does things: | |
12174 | F -- .rdata | |
12175 | L -- .lit8 | |
12176 | f -- immediate value | |
12177 | l -- .lit4 | |
12178 | ||
12179 | The .lit4 and .lit8 sections are only used if | |
12180 | permitted by the -G argument. | |
12181 | ||
ca4e0257 RS |
12182 | The code below needs to know whether the target register |
12183 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
12184 | 'F' are used with GPR-based instructions and 'l' and | |
12185 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
12186 | |
12187 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 12188 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
12189 | |
12190 | save_in = input_line_pointer; | |
12191 | input_line_pointer = s; | |
12192 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
12193 | length = len; | |
12194 | s = input_line_pointer; | |
12195 | input_line_pointer = save_in; | |
12196 | if (err != NULL && *err != '\0') | |
12197 | { | |
12198 | as_bad (_("Bad floating point constant: %s"), err); | |
12199 | memset (temp, '\0', sizeof temp); | |
12200 | length = f64 ? 8 : 4; | |
12201 | } | |
12202 | ||
9c2799c2 | 12203 | gas_assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
12204 | |
12205 | if (*args == 'f' | |
12206 | || (*args == 'l' | |
3e722fb5 | 12207 | && (g_switch_value < 4 |
252b5132 RH |
12208 | || (temp[0] == 0 && temp[1] == 0) |
12209 | || (temp[2] == 0 && temp[3] == 0)))) | |
12210 | { | |
12211 | imm_expr.X_op = O_constant; | |
90ecf173 | 12212 | if (!target_big_endian) |
252b5132 RH |
12213 | imm_expr.X_add_number = bfd_getl32 (temp); |
12214 | else | |
12215 | imm_expr.X_add_number = bfd_getb32 (temp); | |
12216 | } | |
12217 | else if (length > 4 | |
90ecf173 | 12218 | && !mips_disable_float_construction |
ca4e0257 RS |
12219 | /* Constants can only be constructed in GPRs and |
12220 | copied to FPRs if the GPRs are at least as wide | |
12221 | as the FPRs. Force the constant into memory if | |
12222 | we are using 64-bit FPRs but the GPRs are only | |
12223 | 32 bits wide. */ | |
12224 | && (using_gprs | |
90ecf173 | 12225 | || !(HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) |
252b5132 RH |
12226 | && ((temp[0] == 0 && temp[1] == 0) |
12227 | || (temp[2] == 0 && temp[3] == 0)) | |
12228 | && ((temp[4] == 0 && temp[5] == 0) | |
12229 | || (temp[6] == 0 && temp[7] == 0))) | |
12230 | { | |
ca4e0257 | 12231 | /* The value is simple enough to load with a couple of |
90ecf173 MR |
12232 | instructions. If using 32-bit registers, set |
12233 | imm_expr to the high order 32 bits and offset_expr to | |
12234 | the low order 32 bits. Otherwise, set imm_expr to | |
12235 | the entire 64 bit constant. */ | |
ca4e0257 | 12236 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) |
252b5132 RH |
12237 | { |
12238 | imm_expr.X_op = O_constant; | |
12239 | offset_expr.X_op = O_constant; | |
90ecf173 | 12240 | if (!target_big_endian) |
252b5132 RH |
12241 | { |
12242 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
12243 | offset_expr.X_add_number = bfd_getl32 (temp); | |
12244 | } | |
12245 | else | |
12246 | { | |
12247 | imm_expr.X_add_number = bfd_getb32 (temp); | |
12248 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
12249 | } | |
12250 | if (offset_expr.X_add_number == 0) | |
12251 | offset_expr.X_op = O_absent; | |
12252 | } | |
12253 | else if (sizeof (imm_expr.X_add_number) > 4) | |
12254 | { | |
12255 | imm_expr.X_op = O_constant; | |
90ecf173 | 12256 | if (!target_big_endian) |
252b5132 RH |
12257 | imm_expr.X_add_number = bfd_getl64 (temp); |
12258 | else | |
12259 | imm_expr.X_add_number = bfd_getb64 (temp); | |
12260 | } | |
12261 | else | |
12262 | { | |
12263 | imm_expr.X_op = O_big; | |
12264 | imm_expr.X_add_number = 4; | |
90ecf173 | 12265 | if (!target_big_endian) |
252b5132 RH |
12266 | { |
12267 | generic_bignum[0] = bfd_getl16 (temp); | |
12268 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
12269 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
12270 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
12271 | } | |
12272 | else | |
12273 | { | |
12274 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
12275 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
12276 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
12277 | generic_bignum[3] = bfd_getb16 (temp); | |
12278 | } | |
12279 | } | |
12280 | } | |
12281 | else | |
12282 | { | |
12283 | const char *newname; | |
12284 | segT new_seg; | |
12285 | ||
12286 | /* Switch to the right section. */ | |
12287 | seg = now_seg; | |
12288 | subseg = now_subseg; | |
12289 | switch (*args) | |
12290 | { | |
12291 | default: /* unused default case avoids warnings. */ | |
12292 | case 'L': | |
12293 | newname = RDATA_SECTION_NAME; | |
3e722fb5 | 12294 | if (g_switch_value >= 8) |
252b5132 RH |
12295 | newname = ".lit8"; |
12296 | break; | |
12297 | case 'F': | |
3e722fb5 | 12298 | newname = RDATA_SECTION_NAME; |
252b5132 RH |
12299 | break; |
12300 | case 'l': | |
9c2799c2 | 12301 | gas_assert (g_switch_value >= 4); |
252b5132 RH |
12302 | newname = ".lit4"; |
12303 | break; | |
12304 | } | |
12305 | new_seg = subseg_new (newname, (subsegT) 0); | |
f43abd2b | 12306 | if (IS_ELF) |
252b5132 RH |
12307 | bfd_set_section_flags (stdoutput, new_seg, |
12308 | (SEC_ALLOC | |
12309 | | SEC_LOAD | |
12310 | | SEC_READONLY | |
12311 | | SEC_DATA)); | |
12312 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
c41e87e3 | 12313 | if (IS_ELF && strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
12314 | record_alignment (new_seg, 4); |
12315 | else | |
12316 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
12317 | if (seg == now_seg) | |
12318 | as_bad (_("Can't use floating point insn in this section")); | |
12319 | ||
df58fc94 RS |
12320 | /* Set the argument to the current address in the |
12321 | section. */ | |
12322 | offset_expr.X_op = O_symbol; | |
12323 | offset_expr.X_add_symbol = symbol_temp_new_now (); | |
12324 | offset_expr.X_add_number = 0; | |
12325 | ||
12326 | /* Put the floating point number into the section. */ | |
12327 | p = frag_more ((int) length); | |
12328 | memcpy (p, temp, length); | |
12329 | ||
12330 | /* Switch back to the original section. */ | |
12331 | subseg_set (seg, subseg); | |
12332 | } | |
12333 | } | |
12334 | continue; | |
12335 | ||
12336 | case 'i': /* 16-bit unsigned immediate. */ | |
12337 | case 'j': /* 16-bit signed immediate. */ | |
12338 | *imm_reloc = BFD_RELOC_LO16; | |
12339 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0) | |
12340 | { | |
12341 | int more; | |
12342 | offsetT minval, maxval; | |
12343 | ||
12344 | more = (insn + 1 < past | |
12345 | && strcmp (insn->name, insn[1].name) == 0); | |
12346 | ||
12347 | /* If the expression was written as an unsigned number, | |
12348 | only treat it as signed if there are no more | |
12349 | alternatives. */ | |
12350 | if (more | |
12351 | && *args == 'j' | |
12352 | && sizeof (imm_expr.X_add_number) <= 4 | |
12353 | && imm_expr.X_op == O_constant | |
12354 | && imm_expr.X_add_number < 0 | |
12355 | && imm_expr.X_unsigned | |
12356 | && HAVE_64BIT_GPRS) | |
12357 | break; | |
12358 | ||
12359 | /* For compatibility with older assemblers, we accept | |
12360 | 0x8000-0xffff as signed 16-bit numbers when only | |
12361 | signed numbers are allowed. */ | |
12362 | if (*args == 'i') | |
12363 | minval = 0, maxval = 0xffff; | |
12364 | else if (more) | |
12365 | minval = -0x8000, maxval = 0x7fff; | |
12366 | else | |
12367 | minval = -0x8000, maxval = 0xffff; | |
12368 | ||
12369 | if (imm_expr.X_op != O_constant | |
12370 | || imm_expr.X_add_number < minval | |
12371 | || imm_expr.X_add_number > maxval) | |
12372 | { | |
12373 | if (more) | |
12374 | break; | |
12375 | if (imm_expr.X_op == O_constant | |
12376 | || imm_expr.X_op == O_big) | |
12377 | as_bad (_("Expression out of range")); | |
12378 | } | |
12379 | } | |
12380 | s = expr_end; | |
12381 | continue; | |
12382 | ||
12383 | case 'o': /* 16-bit offset. */ | |
12384 | offset_reloc[0] = BFD_RELOC_LO16; | |
12385 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
12386 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
12387 | ||
12388 | /* Check whether there is only a single bracketed expression | |
12389 | left. If so, it must be the base register and the | |
12390 | constant must be zero. */ | |
12391 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12392 | { | |
12393 | offset_expr.X_op = O_constant; | |
12394 | offset_expr.X_add_number = 0; | |
12395 | continue; | |
12396 | } | |
12397 | ||
12398 | /* If this value won't fit into a 16 bit offset, then go | |
12399 | find a macro that will generate the 32 bit offset | |
12400 | code pattern. */ | |
12401 | if (my_getSmallExpression (&offset_expr, offset_reloc, s) == 0 | |
12402 | && (offset_expr.X_op != O_constant | |
12403 | || offset_expr.X_add_number >= 0x8000 | |
12404 | || offset_expr.X_add_number < -0x8000)) | |
12405 | break; | |
12406 | ||
12407 | s = expr_end; | |
12408 | continue; | |
12409 | ||
12410 | case 'p': /* PC-relative offset. */ | |
12411 | *offset_reloc = BFD_RELOC_16_PCREL_S2; | |
12412 | my_getExpression (&offset_expr, s); | |
12413 | s = expr_end; | |
12414 | continue; | |
12415 | ||
12416 | case 'u': /* Upper 16 bits. */ | |
12417 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0 | |
12418 | && imm_expr.X_op == O_constant | |
12419 | && (imm_expr.X_add_number < 0 | |
12420 | || imm_expr.X_add_number >= 0x10000)) | |
12421 | as_bad (_("lui expression (%lu) not in range 0..65535"), | |
12422 | (unsigned long) imm_expr.X_add_number); | |
12423 | s = expr_end; | |
12424 | continue; | |
12425 | ||
12426 | case 'a': /* 26-bit address. */ | |
12427 | *offset_reloc = BFD_RELOC_MIPS_JMP; | |
12428 | my_getExpression (&offset_expr, s); | |
12429 | s = expr_end; | |
12430 | continue; | |
12431 | ||
12432 | case 'N': /* 3-bit branch condition code. */ | |
12433 | case 'M': /* 3-bit compare condition code. */ | |
12434 | rtype = RTYPE_CCC; | |
12435 | if (ip->insn_mo->pinfo & (FP_D | FP_S)) | |
12436 | rtype |= RTYPE_FCC; | |
12437 | if (!reg_lookup (&s, rtype, ®no)) | |
12438 | break; | |
12439 | if ((strcmp (str + strlen (str) - 3, ".ps") == 0 | |
12440 | || strcmp (str + strlen (str) - 5, "any2f") == 0 | |
12441 | || strcmp (str + strlen (str) - 5, "any2t") == 0) | |
12442 | && (regno & 1) != 0) | |
12443 | as_warn (_("Condition code register should be even for %s, " | |
12444 | "was %d"), | |
12445 | str, regno); | |
12446 | if ((strcmp (str + strlen (str) - 5, "any4f") == 0 | |
12447 | || strcmp (str + strlen (str) - 5, "any4t") == 0) | |
12448 | && (regno & 3) != 0) | |
12449 | as_warn (_("Condition code register should be 0 or 4 for %s, " | |
12450 | "was %d"), | |
12451 | str, regno); | |
12452 | if (*args == 'N') | |
12453 | INSERT_OPERAND (mips_opts.micromips, BCC, *ip, regno); | |
12454 | else | |
12455 | INSERT_OPERAND (mips_opts.micromips, CCC, *ip, regno); | |
12456 | continue; | |
12457 | ||
12458 | case 'H': | |
12459 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
12460 | s += 2; | |
12461 | if (ISDIGIT (*s)) | |
12462 | { | |
12463 | c = 0; | |
12464 | do | |
12465 | { | |
12466 | c *= 10; | |
12467 | c += *s - '0'; | |
12468 | ++s; | |
12469 | } | |
12470 | while (ISDIGIT (*s)); | |
12471 | } | |
12472 | else | |
12473 | c = 8; /* Invalid sel value. */ | |
12474 | ||
12475 | if (c > 7) | |
12476 | as_bad (_("Invalid coprocessor sub-selection value (0-7)")); | |
12477 | INSERT_OPERAND (mips_opts.micromips, SEL, *ip, c); | |
12478 | continue; | |
12479 | ||
12480 | case 'e': | |
12481 | gas_assert (!mips_opts.micromips); | |
12482 | /* Must be at least one digit. */ | |
12483 | my_getExpression (&imm_expr, s); | |
12484 | check_absolute_expr (ip, &imm_expr); | |
12485 | ||
12486 | if ((unsigned long) imm_expr.X_add_number | |
12487 | > (unsigned long) OP_MASK_VECBYTE) | |
12488 | { | |
12489 | as_bad (_("bad byte vector index (%ld)"), | |
12490 | (long) imm_expr.X_add_number); | |
12491 | imm_expr.X_add_number = 0; | |
12492 | } | |
12493 | ||
12494 | INSERT_OPERAND (0, VECBYTE, *ip, imm_expr.X_add_number); | |
12495 | imm_expr.X_op = O_absent; | |
12496 | s = expr_end; | |
12497 | continue; | |
12498 | ||
12499 | case '%': | |
12500 | gas_assert (!mips_opts.micromips); | |
12501 | my_getExpression (&imm_expr, s); | |
12502 | check_absolute_expr (ip, &imm_expr); | |
12503 | ||
12504 | if ((unsigned long) imm_expr.X_add_number | |
12505 | > (unsigned long) OP_MASK_VECALIGN) | |
12506 | { | |
12507 | as_bad (_("bad byte vector index (%ld)"), | |
12508 | (long) imm_expr.X_add_number); | |
12509 | imm_expr.X_add_number = 0; | |
12510 | } | |
12511 | ||
12512 | INSERT_OPERAND (0, VECALIGN, *ip, imm_expr.X_add_number); | |
12513 | imm_expr.X_op = O_absent; | |
12514 | s = expr_end; | |
12515 | continue; | |
12516 | ||
12517 | case 'm': /* Opcode extension character. */ | |
12518 | gas_assert (mips_opts.micromips); | |
12519 | c = *++args; | |
12520 | switch (c) | |
12521 | { | |
12522 | case 'r': | |
12523 | if (strncmp (s, "$pc", 3) == 0) | |
12524 | { | |
12525 | s += 3; | |
12526 | continue; | |
12527 | } | |
12528 | break; | |
12529 | ||
12530 | case 'a': | |
12531 | case 'b': | |
12532 | case 'c': | |
12533 | case 'd': | |
12534 | case 'e': | |
12535 | case 'f': | |
12536 | case 'g': | |
12537 | case 'h': | |
12538 | case 'i': | |
12539 | case 'j': | |
12540 | case 'l': | |
12541 | case 'm': | |
12542 | case 'n': | |
12543 | case 'p': | |
12544 | case 'q': | |
12545 | case 's': | |
12546 | case 't': | |
12547 | case 'x': | |
12548 | case 'y': | |
12549 | case 'z': | |
12550 | s_reset = s; | |
12551 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
12552 | if (regno == AT && mips_opts.at) | |
12553 | { | |
12554 | if (mips_opts.at == ATREG) | |
12555 | as_warn (_("Used $at without \".set noat\"")); | |
12556 | else | |
12557 | as_warn (_("Used $%u with \".set at=$%u\""), | |
12558 | regno, mips_opts.at); | |
12559 | } | |
12560 | if (!ok) | |
12561 | { | |
12562 | if (c == 'c') | |
12563 | { | |
12564 | gas_assert (args[1] == ','); | |
12565 | regno = lastregno; | |
12566 | ++args; | |
12567 | } | |
12568 | else if (c == 't') | |
12569 | { | |
12570 | gas_assert (args[1] == ','); | |
12571 | ++args; | |
12572 | continue; /* Nothing to do. */ | |
12573 | } | |
12574 | else | |
12575 | break; | |
12576 | } | |
12577 | ||
12578 | if (c == 'j' && !strncmp (ip->insn_mo->name, "jalr", 4)) | |
12579 | { | |
12580 | if (regno == lastregno) | |
12581 | { | |
12582 | insn_error | |
12583 | = _("Source and destination must be different"); | |
12584 | continue; | |
12585 | } | |
12586 | if (regno == 31 && lastregno == 0xffffffff) | |
12587 | { | |
12588 | insn_error | |
12589 | = _("A destination register must be supplied"); | |
12590 | continue; | |
12591 | } | |
12592 | } | |
12593 | ||
12594 | if (*s == ' ') | |
12595 | ++s; | |
12596 | if (args[1] != *s) | |
12597 | { | |
12598 | if (c == 'e') | |
12599 | { | |
12600 | gas_assert (args[1] == ','); | |
12601 | regno = lastregno; | |
12602 | s = s_reset; | |
12603 | ++args; | |
12604 | } | |
12605 | else if (c == 't') | |
12606 | { | |
12607 | gas_assert (args[1] == ','); | |
12608 | s = s_reset; | |
12609 | ++args; | |
12610 | continue; /* Nothing to do. */ | |
12611 | } | |
12612 | } | |
12613 | ||
12614 | /* Make sure regno is the same as lastregno. */ | |
12615 | if (c == 't' && regno != lastregno) | |
12616 | break; | |
12617 | ||
12618 | /* Make sure regno is the same as destregno. */ | |
12619 | if (c == 'x' && regno != destregno) | |
12620 | break; | |
12621 | ||
12622 | /* We need to save regno, before regno maps to the | |
12623 | microMIPS register encoding. */ | |
12624 | lastregno = regno; | |
12625 | ||
12626 | if (c == 'f') | |
12627 | destregno = regno; | |
12628 | ||
12629 | switch (c) | |
12630 | { | |
12631 | case 'a': | |
12632 | if (regno != GP) | |
12633 | regno = ILLEGAL_REG; | |
12634 | break; | |
12635 | ||
12636 | case 'b': | |
12637 | regno = mips32_to_micromips_reg_b_map[regno]; | |
12638 | break; | |
12639 | ||
12640 | case 'c': | |
12641 | regno = mips32_to_micromips_reg_c_map[regno]; | |
12642 | break; | |
12643 | ||
12644 | case 'd': | |
12645 | regno = mips32_to_micromips_reg_d_map[regno]; | |
12646 | break; | |
12647 | ||
12648 | case 'e': | |
12649 | regno = mips32_to_micromips_reg_e_map[regno]; | |
12650 | break; | |
12651 | ||
12652 | case 'f': | |
12653 | regno = mips32_to_micromips_reg_f_map[regno]; | |
12654 | break; | |
12655 | ||
12656 | case 'g': | |
12657 | regno = mips32_to_micromips_reg_g_map[regno]; | |
12658 | break; | |
12659 | ||
12660 | case 'h': | |
12661 | regno = mips32_to_micromips_reg_h_map[regno]; | |
12662 | break; | |
12663 | ||
12664 | case 'i': | |
12665 | switch (EXTRACT_OPERAND (1, MI, *ip)) | |
12666 | { | |
12667 | case 4: | |
12668 | if (regno == 21) | |
12669 | regno = 3; | |
12670 | else if (regno == 22) | |
12671 | regno = 4; | |
12672 | else if (regno == 5) | |
12673 | regno = 5; | |
12674 | else if (regno == 6) | |
12675 | regno = 6; | |
12676 | else if (regno == 7) | |
12677 | regno = 7; | |
12678 | else | |
12679 | regno = ILLEGAL_REG; | |
12680 | break; | |
12681 | ||
12682 | case 5: | |
12683 | if (regno == 6) | |
12684 | regno = 0; | |
12685 | else if (regno == 7) | |
12686 | regno = 1; | |
12687 | else | |
12688 | regno = ILLEGAL_REG; | |
12689 | break; | |
12690 | ||
12691 | case 6: | |
12692 | if (regno == 7) | |
12693 | regno = 2; | |
12694 | else | |
12695 | regno = ILLEGAL_REG; | |
12696 | break; | |
12697 | ||
12698 | default: | |
12699 | regno = ILLEGAL_REG; | |
12700 | break; | |
12701 | } | |
12702 | break; | |
12703 | ||
12704 | case 'l': | |
12705 | regno = mips32_to_micromips_reg_l_map[regno]; | |
12706 | break; | |
12707 | ||
12708 | case 'm': | |
12709 | regno = mips32_to_micromips_reg_m_map[regno]; | |
12710 | break; | |
12711 | ||
12712 | case 'n': | |
12713 | regno = mips32_to_micromips_reg_n_map[regno]; | |
12714 | break; | |
12715 | ||
12716 | case 'q': | |
12717 | regno = mips32_to_micromips_reg_q_map[regno]; | |
12718 | break; | |
12719 | ||
12720 | case 's': | |
12721 | if (regno != SP) | |
12722 | regno = ILLEGAL_REG; | |
12723 | break; | |
12724 | ||
12725 | case 'y': | |
12726 | if (regno != 31) | |
12727 | regno = ILLEGAL_REG; | |
12728 | break; | |
12729 | ||
12730 | case 'z': | |
12731 | if (regno != ZERO) | |
12732 | regno = ILLEGAL_REG; | |
12733 | break; | |
12734 | ||
12735 | case 'j': /* Do nothing. */ | |
12736 | case 'p': | |
12737 | case 't': | |
12738 | case 'x': | |
12739 | break; | |
12740 | ||
12741 | default: | |
12742 | internalError (); | |
12743 | } | |
12744 | ||
12745 | if (regno == ILLEGAL_REG) | |
12746 | break; | |
12747 | ||
12748 | switch (c) | |
12749 | { | |
12750 | case 'b': | |
12751 | INSERT_OPERAND (1, MB, *ip, regno); | |
12752 | break; | |
12753 | ||
12754 | case 'c': | |
12755 | INSERT_OPERAND (1, MC, *ip, regno); | |
12756 | break; | |
12757 | ||
12758 | case 'd': | |
12759 | INSERT_OPERAND (1, MD, *ip, regno); | |
12760 | break; | |
12761 | ||
12762 | case 'e': | |
12763 | INSERT_OPERAND (1, ME, *ip, regno); | |
12764 | break; | |
12765 | ||
12766 | case 'f': | |
12767 | INSERT_OPERAND (1, MF, *ip, regno); | |
12768 | break; | |
12769 | ||
12770 | case 'g': | |
12771 | INSERT_OPERAND (1, MG, *ip, regno); | |
12772 | break; | |
12773 | ||
12774 | case 'h': | |
12775 | INSERT_OPERAND (1, MH, *ip, regno); | |
12776 | break; | |
12777 | ||
12778 | case 'i': | |
12779 | INSERT_OPERAND (1, MI, *ip, regno); | |
12780 | break; | |
12781 | ||
12782 | case 'j': | |
12783 | INSERT_OPERAND (1, MJ, *ip, regno); | |
12784 | break; | |
12785 | ||
12786 | case 'l': | |
12787 | INSERT_OPERAND (1, ML, *ip, regno); | |
12788 | break; | |
12789 | ||
12790 | case 'm': | |
12791 | INSERT_OPERAND (1, MM, *ip, regno); | |
12792 | break; | |
12793 | ||
12794 | case 'n': | |
12795 | INSERT_OPERAND (1, MN, *ip, regno); | |
12796 | break; | |
12797 | ||
12798 | case 'p': | |
12799 | INSERT_OPERAND (1, MP, *ip, regno); | |
12800 | break; | |
12801 | ||
12802 | case 'q': | |
12803 | INSERT_OPERAND (1, MQ, *ip, regno); | |
12804 | break; | |
12805 | ||
12806 | case 'a': /* Do nothing. */ | |
12807 | case 's': /* Do nothing. */ | |
12808 | case 't': /* Do nothing. */ | |
12809 | case 'x': /* Do nothing. */ | |
12810 | case 'y': /* Do nothing. */ | |
12811 | case 'z': /* Do nothing. */ | |
12812 | break; | |
12813 | ||
12814 | default: | |
12815 | internalError (); | |
12816 | } | |
12817 | continue; | |
12818 | ||
12819 | case 'A': | |
12820 | { | |
12821 | bfd_reloc_code_real_type r[3]; | |
12822 | expressionS ep; | |
12823 | int imm; | |
12824 | ||
12825 | /* Check whether there is only a single bracketed | |
12826 | expression left. If so, it must be the base register | |
12827 | and the constant must be zero. */ | |
12828 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12829 | { | |
12830 | INSERT_OPERAND (1, IMMA, *ip, 0); | |
12831 | continue; | |
12832 | } | |
12833 | ||
12834 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12835 | || !expr_const_in_range (&ep, -64, 64, 2)) | |
12836 | break; | |
12837 | ||
12838 | imm = ep.X_add_number >> 2; | |
12839 | INSERT_OPERAND (1, IMMA, *ip, imm); | |
12840 | } | |
12841 | s = expr_end; | |
12842 | continue; | |
12843 | ||
12844 | case 'B': | |
12845 | { | |
12846 | bfd_reloc_code_real_type r[3]; | |
12847 | expressionS ep; | |
12848 | int imm; | |
12849 | ||
12850 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12851 | || ep.X_op != O_constant) | |
12852 | break; | |
12853 | ||
12854 | for (imm = 0; imm < 8; imm++) | |
12855 | if (micromips_imm_b_map[imm] == ep.X_add_number) | |
12856 | break; | |
12857 | if (imm >= 8) | |
12858 | break; | |
12859 | ||
12860 | INSERT_OPERAND (1, IMMB, *ip, imm); | |
12861 | } | |
12862 | s = expr_end; | |
12863 | continue; | |
12864 | ||
12865 | case 'C': | |
12866 | { | |
12867 | bfd_reloc_code_real_type r[3]; | |
12868 | expressionS ep; | |
12869 | int imm; | |
12870 | ||
12871 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12872 | || ep.X_op != O_constant) | |
12873 | break; | |
12874 | ||
12875 | for (imm = 0; imm < 16; imm++) | |
12876 | if (micromips_imm_c_map[imm] == ep.X_add_number) | |
12877 | break; | |
12878 | if (imm >= 16) | |
12879 | break; | |
12880 | ||
12881 | INSERT_OPERAND (1, IMMC, *ip, imm); | |
12882 | } | |
12883 | s = expr_end; | |
12884 | continue; | |
12885 | ||
12886 | case 'D': /* pc relative offset */ | |
12887 | case 'E': /* pc relative offset */ | |
12888 | my_getExpression (&offset_expr, s); | |
12889 | if (offset_expr.X_op == O_register) | |
12890 | break; | |
12891 | ||
40209cad MR |
12892 | if (!forced_insn_length) |
12893 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; | |
12894 | else if (c == 'D') | |
12895 | *offset_reloc = BFD_RELOC_MICROMIPS_10_PCREL_S1; | |
12896 | else | |
12897 | *offset_reloc = BFD_RELOC_MICROMIPS_7_PCREL_S1; | |
df58fc94 RS |
12898 | s = expr_end; |
12899 | continue; | |
12900 | ||
12901 | case 'F': | |
12902 | { | |
12903 | bfd_reloc_code_real_type r[3]; | |
12904 | expressionS ep; | |
12905 | int imm; | |
12906 | ||
12907 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12908 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
12909 | break; | |
12910 | ||
12911 | imm = ep.X_add_number; | |
12912 | INSERT_OPERAND (1, IMMF, *ip, imm); | |
12913 | } | |
12914 | s = expr_end; | |
12915 | continue; | |
12916 | ||
12917 | case 'G': | |
12918 | { | |
12919 | bfd_reloc_code_real_type r[3]; | |
12920 | expressionS ep; | |
12921 | int imm; | |
12922 | ||
12923 | /* Check whether there is only a single bracketed | |
12924 | expression left. If so, it must be the base register | |
12925 | and the constant must be zero. */ | |
12926 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12927 | { | |
12928 | INSERT_OPERAND (1, IMMG, *ip, 0); | |
12929 | continue; | |
12930 | } | |
12931 | ||
12932 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12933 | || !expr_const_in_range (&ep, -1, 15, 0)) | |
12934 | break; | |
12935 | ||
12936 | imm = ep.X_add_number & 15; | |
12937 | INSERT_OPERAND (1, IMMG, *ip, imm); | |
12938 | } | |
12939 | s = expr_end; | |
12940 | continue; | |
12941 | ||
12942 | case 'H': | |
12943 | { | |
12944 | bfd_reloc_code_real_type r[3]; | |
12945 | expressionS ep; | |
12946 | int imm; | |
12947 | ||
12948 | /* Check whether there is only a single bracketed | |
12949 | expression left. If so, it must be the base register | |
12950 | and the constant must be zero. */ | |
12951 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12952 | { | |
12953 | INSERT_OPERAND (1, IMMH, *ip, 0); | |
12954 | continue; | |
12955 | } | |
12956 | ||
12957 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12958 | || !expr_const_in_range (&ep, 0, 16, 1)) | |
12959 | break; | |
12960 | ||
12961 | imm = ep.X_add_number >> 1; | |
12962 | INSERT_OPERAND (1, IMMH, *ip, imm); | |
12963 | } | |
12964 | s = expr_end; | |
12965 | continue; | |
12966 | ||
12967 | case 'I': | |
12968 | { | |
12969 | bfd_reloc_code_real_type r[3]; | |
12970 | expressionS ep; | |
12971 | int imm; | |
12972 | ||
12973 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12974 | || !expr_const_in_range (&ep, -1, 127, 0)) | |
12975 | break; | |
12976 | ||
12977 | imm = ep.X_add_number & 127; | |
12978 | INSERT_OPERAND (1, IMMI, *ip, imm); | |
12979 | } | |
12980 | s = expr_end; | |
12981 | continue; | |
12982 | ||
12983 | case 'J': | |
12984 | { | |
12985 | bfd_reloc_code_real_type r[3]; | |
12986 | expressionS ep; | |
12987 | int imm; | |
12988 | ||
12989 | /* Check whether there is only a single bracketed | |
12990 | expression left. If so, it must be the base register | |
12991 | and the constant must be zero. */ | |
12992 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12993 | { | |
12994 | INSERT_OPERAND (1, IMMJ, *ip, 0); | |
12995 | continue; | |
12996 | } | |
12997 | ||
12998 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12999 | || !expr_const_in_range (&ep, 0, 16, 2)) | |
13000 | break; | |
13001 | ||
13002 | imm = ep.X_add_number >> 2; | |
13003 | INSERT_OPERAND (1, IMMJ, *ip, imm); | |
13004 | } | |
13005 | s = expr_end; | |
13006 | continue; | |
13007 | ||
13008 | case 'L': | |
13009 | { | |
13010 | bfd_reloc_code_real_type r[3]; | |
13011 | expressionS ep; | |
13012 | int imm; | |
13013 | ||
13014 | /* Check whether there is only a single bracketed | |
13015 | expression left. If so, it must be the base register | |
13016 | and the constant must be zero. */ | |
13017 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
13018 | { | |
13019 | INSERT_OPERAND (1, IMML, *ip, 0); | |
13020 | continue; | |
13021 | } | |
13022 | ||
13023 | if (my_getSmallExpression (&ep, r, s) > 0 | |
13024 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
13025 | break; | |
13026 | ||
13027 | imm = ep.X_add_number; | |
13028 | INSERT_OPERAND (1, IMML, *ip, imm); | |
13029 | } | |
13030 | s = expr_end; | |
13031 | continue; | |
13032 | ||
13033 | case 'M': | |
13034 | { | |
13035 | bfd_reloc_code_real_type r[3]; | |
13036 | expressionS ep; | |
13037 | int imm; | |
13038 | ||
13039 | if (my_getSmallExpression (&ep, r, s) > 0 | |
13040 | || !expr_const_in_range (&ep, 1, 9, 0)) | |
13041 | break; | |
13042 | ||
13043 | imm = ep.X_add_number & 7; | |
13044 | INSERT_OPERAND (1, IMMM, *ip, imm); | |
13045 | } | |
13046 | s = expr_end; | |
13047 | continue; | |
13048 | ||
13049 | case 'N': /* Register list for lwm and swm. */ | |
13050 | { | |
13051 | /* A comma-separated list of registers and/or | |
13052 | dash-separated contiguous ranges including | |
13053 | both ra and a set of one or more registers | |
13054 | starting at s0 up to s3 which have to be | |
13055 | consecutive, e.g.: | |
13056 | ||
13057 | s0, ra | |
13058 | s0, s1, ra, s2, s3 | |
13059 | s0-s2, ra | |
13060 | ||
13061 | and any permutations of these. */ | |
13062 | unsigned int reglist; | |
13063 | int imm; | |
13064 | ||
13065 | if (!reglist_lookup (&s, RTYPE_NUM | RTYPE_GP, ®list)) | |
13066 | break; | |
13067 | ||
13068 | if ((reglist & 0xfff1ffff) != 0x80010000) | |
13069 | break; | |
13070 | ||
13071 | reglist = (reglist >> 17) & 7; | |
13072 | reglist += 1; | |
13073 | if ((reglist & -reglist) != reglist) | |
13074 | break; | |
252b5132 | 13075 | |
df58fc94 RS |
13076 | imm = ffs (reglist) - 1; |
13077 | INSERT_OPERAND (1, IMMN, *ip, imm); | |
13078 | } | |
13079 | continue; | |
252b5132 | 13080 | |
df58fc94 RS |
13081 | case 'O': /* sdbbp 4-bit code. */ |
13082 | { | |
13083 | bfd_reloc_code_real_type r[3]; | |
13084 | expressionS ep; | |
13085 | int imm; | |
13086 | ||
13087 | if (my_getSmallExpression (&ep, r, s) > 0 | |
13088 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
13089 | break; | |
13090 | ||
13091 | imm = ep.X_add_number; | |
13092 | INSERT_OPERAND (1, IMMO, *ip, imm); | |
252b5132 | 13093 | } |
df58fc94 RS |
13094 | s = expr_end; |
13095 | continue; | |
252b5132 | 13096 | |
df58fc94 RS |
13097 | case 'P': |
13098 | { | |
13099 | bfd_reloc_code_real_type r[3]; | |
13100 | expressionS ep; | |
13101 | int imm; | |
5e0116d5 | 13102 | |
df58fc94 RS |
13103 | if (my_getSmallExpression (&ep, r, s) > 0 |
13104 | || !expr_const_in_range (&ep, 0, 32, 2)) | |
13105 | break; | |
5e0116d5 | 13106 | |
df58fc94 RS |
13107 | imm = ep.X_add_number >> 2; |
13108 | INSERT_OPERAND (1, IMMP, *ip, imm); | |
13109 | } | |
13110 | s = expr_end; | |
13111 | continue; | |
5e0116d5 | 13112 | |
df58fc94 RS |
13113 | case 'Q': |
13114 | { | |
13115 | bfd_reloc_code_real_type r[3]; | |
13116 | expressionS ep; | |
13117 | int imm; | |
5e0116d5 | 13118 | |
df58fc94 RS |
13119 | if (my_getSmallExpression (&ep, r, s) > 0 |
13120 | || !expr_const_in_range (&ep, -0x400000, 0x400000, 2)) | |
13121 | break; | |
252b5132 | 13122 | |
df58fc94 RS |
13123 | imm = ep.X_add_number >> 2; |
13124 | INSERT_OPERAND (1, IMMQ, *ip, imm); | |
13125 | } | |
13126 | s = expr_end; | |
13127 | continue; | |
4614d845 | 13128 | |
df58fc94 RS |
13129 | case 'U': |
13130 | { | |
13131 | bfd_reloc_code_real_type r[3]; | |
13132 | expressionS ep; | |
13133 | int imm; | |
13134 | ||
13135 | /* Check whether there is only a single bracketed | |
13136 | expression left. If so, it must be the base register | |
13137 | and the constant must be zero. */ | |
13138 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
13139 | { | |
13140 | INSERT_OPERAND (1, IMMU, *ip, 0); | |
13141 | continue; | |
13142 | } | |
13143 | ||
13144 | if (my_getSmallExpression (&ep, r, s) > 0 | |
13145 | || !expr_const_in_range (&ep, 0, 32, 2)) | |
13146 | break; | |
13147 | ||
13148 | imm = ep.X_add_number >> 2; | |
13149 | INSERT_OPERAND (1, IMMU, *ip, imm); | |
13150 | } | |
13151 | s = expr_end; | |
5e0116d5 | 13152 | continue; |
252b5132 | 13153 | |
df58fc94 RS |
13154 | case 'W': |
13155 | { | |
13156 | bfd_reloc_code_real_type r[3]; | |
13157 | expressionS ep; | |
13158 | int imm; | |
252b5132 | 13159 | |
df58fc94 RS |
13160 | if (my_getSmallExpression (&ep, r, s) > 0 |
13161 | || !expr_const_in_range (&ep, 0, 64, 2)) | |
13162 | break; | |
252b5132 | 13163 | |
df58fc94 RS |
13164 | imm = ep.X_add_number >> 2; |
13165 | INSERT_OPERAND (1, IMMW, *ip, imm); | |
13166 | } | |
13167 | s = expr_end; | |
13168 | continue; | |
252b5132 | 13169 | |
df58fc94 RS |
13170 | case 'X': |
13171 | { | |
13172 | bfd_reloc_code_real_type r[3]; | |
13173 | expressionS ep; | |
13174 | int imm; | |
252b5132 | 13175 | |
df58fc94 RS |
13176 | if (my_getSmallExpression (&ep, r, s) > 0 |
13177 | || !expr_const_in_range (&ep, -8, 8, 0)) | |
13178 | break; | |
252b5132 | 13179 | |
df58fc94 RS |
13180 | imm = ep.X_add_number; |
13181 | INSERT_OPERAND (1, IMMX, *ip, imm); | |
13182 | } | |
13183 | s = expr_end; | |
13184 | continue; | |
252b5132 | 13185 | |
df58fc94 RS |
13186 | case 'Y': |
13187 | { | |
13188 | bfd_reloc_code_real_type r[3]; | |
13189 | expressionS ep; | |
13190 | int imm; | |
156c2f8b | 13191 | |
df58fc94 RS |
13192 | if (my_getSmallExpression (&ep, r, s) > 0 |
13193 | || expr_const_in_range (&ep, -2, 2, 2) | |
13194 | || !expr_const_in_range (&ep, -258, 258, 2)) | |
13195 | break; | |
156c2f8b | 13196 | |
df58fc94 RS |
13197 | imm = ep.X_add_number >> 2; |
13198 | imm = ((imm >> 1) & ~0xff) | (imm & 0xff); | |
13199 | INSERT_OPERAND (1, IMMY, *ip, imm); | |
13200 | } | |
13201 | s = expr_end; | |
13202 | continue; | |
60b63b72 | 13203 | |
df58fc94 RS |
13204 | case 'Z': |
13205 | { | |
13206 | bfd_reloc_code_real_type r[3]; | |
13207 | expressionS ep; | |
13208 | ||
13209 | if (my_getSmallExpression (&ep, r, s) > 0 | |
13210 | || !expr_const_in_range (&ep, 0, 1, 0)) | |
13211 | break; | |
13212 | } | |
13213 | s = expr_end; | |
13214 | continue; | |
13215 | ||
13216 | default: | |
13217 | as_bad (_("Internal error: bad microMIPS opcode " | |
13218 | "(unknown extension operand type `m%c'): %s %s"), | |
13219 | *args, insn->name, insn->args); | |
13220 | /* Further processing is fruitless. */ | |
13221 | return; | |
60b63b72 | 13222 | } |
df58fc94 | 13223 | break; |
60b63b72 | 13224 | |
df58fc94 RS |
13225 | case 'n': /* Register list for 32-bit lwm and swm. */ |
13226 | gas_assert (mips_opts.micromips); | |
13227 | { | |
13228 | /* A comma-separated list of registers and/or | |
13229 | dash-separated contiguous ranges including | |
13230 | at least one of ra and a set of one or more | |
13231 | registers starting at s0 up to s7 and then | |
13232 | s8 which have to be consecutive, e.g.: | |
13233 | ||
13234 | ra | |
13235 | s0 | |
13236 | ra, s0, s1, s2 | |
13237 | s0-s8 | |
13238 | s0-s5, ra | |
13239 | ||
13240 | and any permutations of these. */ | |
13241 | unsigned int reglist; | |
13242 | int imm; | |
13243 | int ra; | |
13244 | ||
13245 | if (!reglist_lookup (&s, RTYPE_NUM | RTYPE_GP, ®list)) | |
13246 | break; | |
13247 | ||
13248 | if ((reglist & 0x3f00ffff) != 0) | |
13249 | break; | |
13250 | ||
13251 | ra = (reglist >> 27) & 0x10; | |
13252 | reglist = ((reglist >> 22) & 0x100) | ((reglist >> 16) & 0xff); | |
13253 | reglist += 1; | |
13254 | if ((reglist & -reglist) != reglist) | |
13255 | break; | |
13256 | ||
13257 | imm = (ffs (reglist) - 1) | ra; | |
13258 | INSERT_OPERAND (1, RT, *ip, imm); | |
13259 | imm_expr.X_op = O_absent; | |
13260 | } | |
60b63b72 RS |
13261 | continue; |
13262 | ||
df58fc94 RS |
13263 | case '|': /* 4-bit trap code. */ |
13264 | gas_assert (mips_opts.micromips); | |
60b63b72 RS |
13265 | my_getExpression (&imm_expr, s); |
13266 | check_absolute_expr (ip, &imm_expr); | |
60b63b72 | 13267 | if ((unsigned long) imm_expr.X_add_number |
df58fc94 RS |
13268 | > MICROMIPSOP_MASK_TRAP) |
13269 | as_bad (_("Trap code (%lu) for %s not in 0..15 range"), | |
13270 | (unsigned long) imm_expr.X_add_number, | |
13271 | ip->insn_mo->name); | |
13272 | INSERT_OPERAND (1, TRAP, *ip, imm_expr.X_add_number); | |
60b63b72 RS |
13273 | imm_expr.X_op = O_absent; |
13274 | s = expr_end; | |
13275 | continue; | |
13276 | ||
252b5132 | 13277 | default: |
f71d0d44 | 13278 | as_bad (_("Bad char = '%c'\n"), *args); |
252b5132 RH |
13279 | internalError (); |
13280 | } | |
13281 | break; | |
13282 | } | |
13283 | /* Args don't match. */ | |
df58fc94 RS |
13284 | s = argsStart; |
13285 | insn_error = _("Illegal operands"); | |
13286 | if (insn + 1 < past && !strcmp (insn->name, insn[1].name)) | |
252b5132 RH |
13287 | { |
13288 | ++insn; | |
252b5132 RH |
13289 | continue; |
13290 | } | |
df58fc94 RS |
13291 | else if (wrong_delay_slot_insns && need_delay_slot_ok) |
13292 | { | |
13293 | gas_assert (firstinsn); | |
13294 | need_delay_slot_ok = FALSE; | |
13295 | past = insn + 1; | |
13296 | insn = firstinsn; | |
13297 | continue; | |
13298 | } | |
252b5132 RH |
13299 | return; |
13300 | } | |
13301 | } | |
13302 | ||
0499d65b TS |
13303 | #define SKIP_SPACE_TABS(S) { while (*(S) == ' ' || *(S) == '\t') ++(S); } |
13304 | ||
252b5132 RH |
13305 | /* This routine assembles an instruction into its binary format when |
13306 | assembling for the mips16. As a side effect, it sets one of the | |
df58fc94 RS |
13307 | global variables imm_reloc or offset_reloc to the type of relocation |
13308 | to do if one of the operands is an address expression. It also sets | |
13309 | forced_insn_length to the resulting instruction size in bytes if the | |
13310 | user explicitly requested a small or extended instruction. */ | |
252b5132 RH |
13311 | |
13312 | static void | |
17a2f251 | 13313 | mips16_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
13314 | { |
13315 | char *s; | |
13316 | const char *args; | |
13317 | struct mips_opcode *insn; | |
13318 | char *argsstart; | |
13319 | unsigned int regno; | |
13320 | unsigned int lastregno = 0; | |
13321 | char *s_reset; | |
d6f16593 | 13322 | size_t i; |
252b5132 RH |
13323 | |
13324 | insn_error = NULL; | |
13325 | ||
df58fc94 | 13326 | forced_insn_length = 0; |
252b5132 | 13327 | |
3882b010 | 13328 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
13329 | ; |
13330 | switch (*s) | |
13331 | { | |
13332 | case '\0': | |
13333 | break; | |
13334 | ||
13335 | case ' ': | |
13336 | *s++ = '\0'; | |
13337 | break; | |
13338 | ||
13339 | case '.': | |
13340 | if (s[1] == 't' && s[2] == ' ') | |
13341 | { | |
13342 | *s = '\0'; | |
df58fc94 | 13343 | forced_insn_length = 2; |
252b5132 RH |
13344 | s += 3; |
13345 | break; | |
13346 | } | |
13347 | else if (s[1] == 'e' && s[2] == ' ') | |
13348 | { | |
13349 | *s = '\0'; | |
df58fc94 | 13350 | forced_insn_length = 4; |
252b5132 RH |
13351 | s += 3; |
13352 | break; | |
13353 | } | |
13354 | /* Fall through. */ | |
13355 | default: | |
13356 | insn_error = _("unknown opcode"); | |
13357 | return; | |
13358 | } | |
13359 | ||
df58fc94 RS |
13360 | if (mips_opts.noautoextend && !forced_insn_length) |
13361 | forced_insn_length = 2; | |
252b5132 RH |
13362 | |
13363 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
13364 | { | |
13365 | insn_error = _("unrecognized opcode"); | |
13366 | return; | |
13367 | } | |
13368 | ||
13369 | argsstart = s; | |
13370 | for (;;) | |
13371 | { | |
9b3f89ee TS |
13372 | bfd_boolean ok; |
13373 | ||
9c2799c2 | 13374 | gas_assert (strcmp (insn->name, str) == 0); |
252b5132 | 13375 | |
037b32b9 | 13376 | ok = is_opcode_valid_16 (insn); |
9b3f89ee TS |
13377 | if (! ok) |
13378 | { | |
13379 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] | |
13380 | && strcmp (insn->name, insn[1].name) == 0) | |
13381 | { | |
13382 | ++insn; | |
13383 | continue; | |
13384 | } | |
13385 | else | |
13386 | { | |
13387 | if (!insn_error) | |
13388 | { | |
13389 | static char buf[100]; | |
13390 | sprintf (buf, | |
7bd942df | 13391 | _("Opcode not supported on this processor: %s (%s)"), |
9b3f89ee TS |
13392 | mips_cpu_info_from_arch (mips_opts.arch)->name, |
13393 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
13394 | insn_error = buf; | |
13395 | } | |
13396 | return; | |
13397 | } | |
13398 | } | |
13399 | ||
1e915849 | 13400 | create_insn (ip, insn); |
252b5132 | 13401 | imm_expr.X_op = O_absent; |
f6688943 TS |
13402 | imm_reloc[0] = BFD_RELOC_UNUSED; |
13403 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
13404 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
5f74bc13 | 13405 | imm2_expr.X_op = O_absent; |
252b5132 | 13406 | offset_expr.X_op = O_absent; |
f6688943 TS |
13407 | offset_reloc[0] = BFD_RELOC_UNUSED; |
13408 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
13409 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
13410 | for (args = insn->args; 1; ++args) |
13411 | { | |
13412 | int c; | |
13413 | ||
13414 | if (*s == ' ') | |
13415 | ++s; | |
13416 | ||
13417 | /* In this switch statement we call break if we did not find | |
13418 | a match, continue if we did find a match, or return if we | |
13419 | are done. */ | |
13420 | ||
13421 | c = *args; | |
13422 | switch (c) | |
13423 | { | |
13424 | case '\0': | |
13425 | if (*s == '\0') | |
13426 | { | |
b886a2ab RS |
13427 | offsetT value; |
13428 | ||
252b5132 RH |
13429 | /* Stuff the immediate value in now, if we can. */ |
13430 | if (imm_expr.X_op == O_constant | |
f6688943 | 13431 | && *imm_reloc > BFD_RELOC_UNUSED |
b886a2ab RS |
13432 | && insn->pinfo != INSN_MACRO |
13433 | && calculate_reloc (*offset_reloc, | |
13434 | imm_expr.X_add_number, &value)) | |
252b5132 | 13435 | { |
c4e7957c | 13436 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
b886a2ab | 13437 | *offset_reloc, value, forced_insn_length, |
43c0598f | 13438 | &ip->insn_opcode); |
252b5132 | 13439 | imm_expr.X_op = O_absent; |
f6688943 | 13440 | *imm_reloc = BFD_RELOC_UNUSED; |
43c0598f | 13441 | *offset_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
13442 | } |
13443 | ||
13444 | return; | |
13445 | } | |
13446 | break; | |
13447 | ||
13448 | case ',': | |
13449 | if (*s++ == c) | |
13450 | continue; | |
13451 | s--; | |
13452 | switch (*++args) | |
13453 | { | |
13454 | case 'v': | |
bf12938e | 13455 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 RH |
13456 | continue; |
13457 | case 'w': | |
bf12938e | 13458 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
13459 | continue; |
13460 | } | |
13461 | break; | |
13462 | ||
13463 | case '(': | |
13464 | case ')': | |
13465 | if (*s++ == c) | |
13466 | continue; | |
13467 | break; | |
13468 | ||
13469 | case 'v': | |
13470 | case 'w': | |
13471 | if (s[0] != '$') | |
13472 | { | |
13473 | if (c == 'v') | |
bf12938e | 13474 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 | 13475 | else |
bf12938e | 13476 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
13477 | ++args; |
13478 | continue; | |
13479 | } | |
13480 | /* Fall through. */ | |
13481 | case 'x': | |
13482 | case 'y': | |
13483 | case 'z': | |
13484 | case 'Z': | |
13485 | case '0': | |
13486 | case 'S': | |
13487 | case 'R': | |
13488 | case 'X': | |
13489 | case 'Y': | |
707bfff6 TS |
13490 | s_reset = s; |
13491 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) | |
252b5132 | 13492 | { |
707bfff6 | 13493 | if (c == 'v' || c == 'w') |
85b51719 | 13494 | { |
707bfff6 | 13495 | if (c == 'v') |
a9e24354 | 13496 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
707bfff6 | 13497 | else |
a9e24354 | 13498 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
707bfff6 TS |
13499 | ++args; |
13500 | continue; | |
85b51719 | 13501 | } |
707bfff6 | 13502 | break; |
252b5132 RH |
13503 | } |
13504 | ||
13505 | if (*s == ' ') | |
13506 | ++s; | |
13507 | if (args[1] != *s) | |
13508 | { | |
13509 | if (c == 'v' || c == 'w') | |
13510 | { | |
13511 | regno = mips16_to_32_reg_map[lastregno]; | |
13512 | s = s_reset; | |
f9419b05 | 13513 | ++args; |
252b5132 RH |
13514 | } |
13515 | } | |
13516 | ||
13517 | switch (c) | |
13518 | { | |
13519 | case 'x': | |
13520 | case 'y': | |
13521 | case 'z': | |
13522 | case 'v': | |
13523 | case 'w': | |
13524 | case 'Z': | |
13525 | regno = mips32_to_16_reg_map[regno]; | |
13526 | break; | |
13527 | ||
13528 | case '0': | |
13529 | if (regno != 0) | |
13530 | regno = ILLEGAL_REG; | |
13531 | break; | |
13532 | ||
13533 | case 'S': | |
13534 | if (regno != SP) | |
13535 | regno = ILLEGAL_REG; | |
13536 | break; | |
13537 | ||
13538 | case 'R': | |
13539 | if (regno != RA) | |
13540 | regno = ILLEGAL_REG; | |
13541 | break; | |
13542 | ||
13543 | case 'X': | |
13544 | case 'Y': | |
741fe287 MR |
13545 | if (regno == AT && mips_opts.at) |
13546 | { | |
13547 | if (mips_opts.at == ATREG) | |
13548 | as_warn (_("used $at without \".set noat\"")); | |
13549 | else | |
13550 | as_warn (_("used $%u with \".set at=$%u\""), | |
13551 | regno, mips_opts.at); | |
13552 | } | |
252b5132 RH |
13553 | break; |
13554 | ||
13555 | default: | |
13556 | internalError (); | |
13557 | } | |
13558 | ||
13559 | if (regno == ILLEGAL_REG) | |
13560 | break; | |
13561 | ||
13562 | switch (c) | |
13563 | { | |
13564 | case 'x': | |
13565 | case 'v': | |
bf12938e | 13566 | MIPS16_INSERT_OPERAND (RX, *ip, regno); |
252b5132 RH |
13567 | break; |
13568 | case 'y': | |
13569 | case 'w': | |
bf12938e | 13570 | MIPS16_INSERT_OPERAND (RY, *ip, regno); |
252b5132 RH |
13571 | break; |
13572 | case 'z': | |
bf12938e | 13573 | MIPS16_INSERT_OPERAND (RZ, *ip, regno); |
252b5132 RH |
13574 | break; |
13575 | case 'Z': | |
bf12938e | 13576 | MIPS16_INSERT_OPERAND (MOVE32Z, *ip, regno); |
252b5132 RH |
13577 | case '0': |
13578 | case 'S': | |
13579 | case 'R': | |
13580 | break; | |
13581 | case 'X': | |
bf12938e | 13582 | MIPS16_INSERT_OPERAND (REGR32, *ip, regno); |
252b5132 RH |
13583 | break; |
13584 | case 'Y': | |
13585 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
bf12938e | 13586 | MIPS16_INSERT_OPERAND (REG32R, *ip, regno); |
252b5132 RH |
13587 | break; |
13588 | default: | |
13589 | internalError (); | |
13590 | } | |
13591 | ||
13592 | lastregno = regno; | |
13593 | continue; | |
13594 | ||
13595 | case 'P': | |
13596 | if (strncmp (s, "$pc", 3) == 0) | |
13597 | { | |
13598 | s += 3; | |
13599 | continue; | |
13600 | } | |
13601 | break; | |
13602 | ||
252b5132 RH |
13603 | case '5': |
13604 | case 'H': | |
13605 | case 'W': | |
13606 | case 'D': | |
13607 | case 'j': | |
252b5132 RH |
13608 | case 'V': |
13609 | case 'C': | |
13610 | case 'U': | |
13611 | case 'k': | |
13612 | case 'K': | |
d6f16593 MR |
13613 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); |
13614 | if (i > 0) | |
252b5132 | 13615 | { |
d6f16593 | 13616 | if (imm_expr.X_op != O_constant) |
252b5132 | 13617 | { |
df58fc94 | 13618 | forced_insn_length = 4; |
5c04167a | 13619 | ip->insn_opcode |= MIPS16_EXTEND; |
252b5132 | 13620 | } |
d6f16593 MR |
13621 | else |
13622 | { | |
13623 | /* We need to relax this instruction. */ | |
13624 | *offset_reloc = *imm_reloc; | |
13625 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; | |
13626 | } | |
13627 | s = expr_end; | |
13628 | continue; | |
252b5132 | 13629 | } |
d6f16593 MR |
13630 | *imm_reloc = BFD_RELOC_UNUSED; |
13631 | /* Fall through. */ | |
13632 | case '<': | |
13633 | case '>': | |
13634 | case '[': | |
13635 | case ']': | |
13636 | case '4': | |
13637 | case '8': | |
13638 | my_getExpression (&imm_expr, s); | |
252b5132 RH |
13639 | if (imm_expr.X_op == O_register) |
13640 | { | |
13641 | /* What we thought was an expression turned out to | |
13642 | be a register. */ | |
13643 | ||
13644 | if (s[0] == '(' && args[1] == '(') | |
13645 | { | |
13646 | /* It looks like the expression was omitted | |
13647 | before a register indirection, which means | |
13648 | that the expression is implicitly zero. We | |
13649 | still set up imm_expr, so that we handle | |
13650 | explicit extensions correctly. */ | |
13651 | imm_expr.X_op = O_constant; | |
13652 | imm_expr.X_add_number = 0; | |
f6688943 | 13653 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13654 | continue; |
13655 | } | |
13656 | ||
13657 | break; | |
13658 | } | |
13659 | ||
13660 | /* We need to relax this instruction. */ | |
f6688943 | 13661 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13662 | s = expr_end; |
13663 | continue; | |
13664 | ||
13665 | case 'p': | |
13666 | case 'q': | |
13667 | case 'A': | |
13668 | case 'B': | |
13669 | case 'E': | |
13670 | /* We use offset_reloc rather than imm_reloc for the PC | |
13671 | relative operands. This lets macros with both | |
13672 | immediate and address operands work correctly. */ | |
13673 | my_getExpression (&offset_expr, s); | |
13674 | ||
13675 | if (offset_expr.X_op == O_register) | |
13676 | break; | |
13677 | ||
13678 | /* We need to relax this instruction. */ | |
f6688943 | 13679 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13680 | s = expr_end; |
13681 | continue; | |
13682 | ||
13683 | case '6': /* break code */ | |
13684 | my_getExpression (&imm_expr, s); | |
13685 | check_absolute_expr (ip, &imm_expr); | |
13686 | if ((unsigned long) imm_expr.X_add_number > 63) | |
bf12938e RS |
13687 | as_warn (_("Invalid value for `%s' (%lu)"), |
13688 | ip->insn_mo->name, | |
13689 | (unsigned long) imm_expr.X_add_number); | |
13690 | MIPS16_INSERT_OPERAND (IMM6, *ip, imm_expr.X_add_number); | |
252b5132 RH |
13691 | imm_expr.X_op = O_absent; |
13692 | s = expr_end; | |
13693 | continue; | |
13694 | ||
13695 | case 'a': /* 26 bit address */ | |
13696 | my_getExpression (&offset_expr, s); | |
13697 | s = expr_end; | |
f6688943 | 13698 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
13699 | ip->insn_opcode <<= 16; |
13700 | continue; | |
13701 | ||
13702 | case 'l': /* register list for entry macro */ | |
13703 | case 'L': /* register list for exit macro */ | |
13704 | { | |
13705 | int mask; | |
13706 | ||
13707 | if (c == 'l') | |
13708 | mask = 0; | |
13709 | else | |
13710 | mask = 7 << 3; | |
13711 | while (*s != '\0') | |
13712 | { | |
707bfff6 | 13713 | unsigned int freg, reg1, reg2; |
252b5132 RH |
13714 | |
13715 | while (*s == ' ' || *s == ',') | |
13716 | ++s; | |
707bfff6 | 13717 | if (reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
252b5132 | 13718 | freg = 0; |
707bfff6 TS |
13719 | else if (reg_lookup (&s, RTYPE_FPU, ®1)) |
13720 | freg = 1; | |
252b5132 RH |
13721 | else |
13722 | { | |
707bfff6 TS |
13723 | as_bad (_("can't parse register list")); |
13724 | break; | |
252b5132 RH |
13725 | } |
13726 | if (*s == ' ') | |
13727 | ++s; | |
13728 | if (*s != '-') | |
13729 | reg2 = reg1; | |
13730 | else | |
13731 | { | |
13732 | ++s; | |
707bfff6 TS |
13733 | if (!reg_lookup (&s, freg ? RTYPE_FPU |
13734 | : (RTYPE_GP | RTYPE_NUM), ®2)) | |
252b5132 | 13735 | { |
707bfff6 TS |
13736 | as_bad (_("invalid register list")); |
13737 | break; | |
252b5132 RH |
13738 | } |
13739 | } | |
13740 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
13741 | { | |
13742 | mask &= ~ (7 << 3); | |
13743 | mask |= 5 << 3; | |
13744 | } | |
13745 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
13746 | { | |
13747 | mask &= ~ (7 << 3); | |
13748 | mask |= 6 << 3; | |
13749 | } | |
13750 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
13751 | mask |= (reg2 - 3) << 3; | |
13752 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
13753 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 13754 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
13755 | mask |= 1; |
13756 | else | |
13757 | { | |
13758 | as_bad (_("invalid register list")); | |
13759 | break; | |
13760 | } | |
13761 | } | |
13762 | /* The mask is filled in in the opcode table for the | |
13763 | benefit of the disassembler. We remove it before | |
13764 | applying the actual mask. */ | |
13765 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
13766 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
13767 | } | |
13768 | continue; | |
13769 | ||
0499d65b TS |
13770 | case 'm': /* Register list for save insn. */ |
13771 | case 'M': /* Register list for restore insn. */ | |
13772 | { | |
5c04167a | 13773 | int opcode = ip->insn_opcode; |
0499d65b | 13774 | int framesz = 0, seen_framesz = 0; |
91d6fa6a | 13775 | int nargs = 0, statics = 0, sregs = 0; |
0499d65b TS |
13776 | |
13777 | while (*s != '\0') | |
13778 | { | |
13779 | unsigned int reg1, reg2; | |
13780 | ||
13781 | SKIP_SPACE_TABS (s); | |
13782 | while (*s == ',') | |
13783 | ++s; | |
13784 | SKIP_SPACE_TABS (s); | |
13785 | ||
13786 | my_getExpression (&imm_expr, s); | |
13787 | if (imm_expr.X_op == O_constant) | |
13788 | { | |
13789 | /* Handle the frame size. */ | |
13790 | if (seen_framesz) | |
13791 | { | |
13792 | as_bad (_("more than one frame size in list")); | |
13793 | break; | |
13794 | } | |
13795 | seen_framesz = 1; | |
13796 | framesz = imm_expr.X_add_number; | |
13797 | imm_expr.X_op = O_absent; | |
13798 | s = expr_end; | |
13799 | continue; | |
13800 | } | |
13801 | ||
707bfff6 | 13802 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
0499d65b TS |
13803 | { |
13804 | as_bad (_("can't parse register list")); | |
13805 | break; | |
13806 | } | |
0499d65b | 13807 | |
707bfff6 TS |
13808 | while (*s == ' ') |
13809 | ++s; | |
13810 | ||
0499d65b TS |
13811 | if (*s != '-') |
13812 | reg2 = reg1; | |
13813 | else | |
13814 | { | |
13815 | ++s; | |
707bfff6 TS |
13816 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®2) |
13817 | || reg2 < reg1) | |
0499d65b TS |
13818 | { |
13819 | as_bad (_("can't parse register list")); | |
13820 | break; | |
13821 | } | |
0499d65b TS |
13822 | } |
13823 | ||
13824 | while (reg1 <= reg2) | |
13825 | { | |
13826 | if (reg1 >= 4 && reg1 <= 7) | |
13827 | { | |
3a93f742 | 13828 | if (!seen_framesz) |
0499d65b | 13829 | /* args $a0-$a3 */ |
91d6fa6a | 13830 | nargs |= 1 << (reg1 - 4); |
0499d65b TS |
13831 | else |
13832 | /* statics $a0-$a3 */ | |
13833 | statics |= 1 << (reg1 - 4); | |
13834 | } | |
13835 | else if ((reg1 >= 16 && reg1 <= 23) || reg1 == 30) | |
13836 | { | |
13837 | /* $s0-$s8 */ | |
13838 | sregs |= 1 << ((reg1 == 30) ? 8 : (reg1 - 16)); | |
13839 | } | |
13840 | else if (reg1 == 31) | |
13841 | { | |
13842 | /* Add $ra to insn. */ | |
13843 | opcode |= 0x40; | |
13844 | } | |
13845 | else | |
13846 | { | |
13847 | as_bad (_("unexpected register in list")); | |
13848 | break; | |
13849 | } | |
13850 | if (++reg1 == 24) | |
13851 | reg1 = 30; | |
13852 | } | |
13853 | } | |
13854 | ||
13855 | /* Encode args/statics combination. */ | |
91d6fa6a | 13856 | if (nargs & statics) |
0499d65b | 13857 | as_bad (_("arg/static registers overlap")); |
91d6fa6a | 13858 | else if (nargs == 0xf) |
0499d65b TS |
13859 | /* All $a0-$a3 are args. */ |
13860 | opcode |= MIPS16_ALL_ARGS << 16; | |
13861 | else if (statics == 0xf) | |
13862 | /* All $a0-$a3 are statics. */ | |
13863 | opcode |= MIPS16_ALL_STATICS << 16; | |
13864 | else | |
13865 | { | |
13866 | int narg = 0, nstat = 0; | |
13867 | ||
13868 | /* Count arg registers. */ | |
91d6fa6a | 13869 | while (nargs & 0x1) |
0499d65b | 13870 | { |
91d6fa6a | 13871 | nargs >>= 1; |
0499d65b TS |
13872 | narg++; |
13873 | } | |
91d6fa6a | 13874 | if (nargs != 0) |
0499d65b TS |
13875 | as_bad (_("invalid arg register list")); |
13876 | ||
13877 | /* Count static registers. */ | |
13878 | while (statics & 0x8) | |
13879 | { | |
13880 | statics = (statics << 1) & 0xf; | |
13881 | nstat++; | |
13882 | } | |
13883 | if (statics != 0) | |
13884 | as_bad (_("invalid static register list")); | |
13885 | ||
13886 | /* Encode args/statics. */ | |
13887 | opcode |= ((narg << 2) | nstat) << 16; | |
13888 | } | |
13889 | ||
13890 | /* Encode $s0/$s1. */ | |
13891 | if (sregs & (1 << 0)) /* $s0 */ | |
13892 | opcode |= 0x20; | |
13893 | if (sregs & (1 << 1)) /* $s1 */ | |
13894 | opcode |= 0x10; | |
13895 | sregs >>= 2; | |
13896 | ||
13897 | if (sregs != 0) | |
13898 | { | |
13899 | /* Count regs $s2-$s8. */ | |
13900 | int nsreg = 0; | |
13901 | while (sregs & 1) | |
13902 | { | |
13903 | sregs >>= 1; | |
13904 | nsreg++; | |
13905 | } | |
13906 | if (sregs != 0) | |
13907 | as_bad (_("invalid static register list")); | |
13908 | /* Encode $s2-$s8. */ | |
13909 | opcode |= nsreg << 24; | |
13910 | } | |
13911 | ||
13912 | /* Encode frame size. */ | |
13913 | if (!seen_framesz) | |
13914 | as_bad (_("missing frame size")); | |
13915 | else if ((framesz & 7) != 0 || framesz < 0 | |
13916 | || framesz > 0xff * 8) | |
13917 | as_bad (_("invalid frame size")); | |
13918 | else if (framesz != 128 || (opcode >> 16) != 0) | |
13919 | { | |
13920 | framesz /= 8; | |
13921 | opcode |= (((framesz & 0xf0) << 16) | |
13922 | | (framesz & 0x0f)); | |
13923 | } | |
13924 | ||
13925 | /* Finally build the instruction. */ | |
13926 | if ((opcode >> 16) != 0 || framesz == 0) | |
5c04167a RS |
13927 | opcode |= MIPS16_EXTEND; |
13928 | ip->insn_opcode = opcode; | |
0499d65b TS |
13929 | } |
13930 | continue; | |
13931 | ||
252b5132 RH |
13932 | case 'e': /* extend code */ |
13933 | my_getExpression (&imm_expr, s); | |
13934 | check_absolute_expr (ip, &imm_expr); | |
13935 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
13936 | { | |
13937 | as_warn (_("Invalid value for `%s' (%lu)"), | |
13938 | ip->insn_mo->name, | |
13939 | (unsigned long) imm_expr.X_add_number); | |
13940 | imm_expr.X_add_number &= 0x7ff; | |
13941 | } | |
13942 | ip->insn_opcode |= imm_expr.X_add_number; | |
13943 | imm_expr.X_op = O_absent; | |
13944 | s = expr_end; | |
13945 | continue; | |
13946 | ||
13947 | default: | |
13948 | internalError (); | |
13949 | } | |
13950 | break; | |
13951 | } | |
13952 | ||
13953 | /* Args don't match. */ | |
13954 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
13955 | strcmp (insn->name, insn[1].name) == 0) | |
13956 | { | |
13957 | ++insn; | |
13958 | s = argsstart; | |
13959 | continue; | |
13960 | } | |
13961 | ||
13962 | insn_error = _("illegal operands"); | |
13963 | ||
13964 | return; | |
13965 | } | |
13966 | } | |
13967 | ||
13968 | /* This structure holds information we know about a mips16 immediate | |
13969 | argument type. */ | |
13970 | ||
e972090a NC |
13971 | struct mips16_immed_operand |
13972 | { | |
252b5132 RH |
13973 | /* The type code used in the argument string in the opcode table. */ |
13974 | int type; | |
13975 | /* The number of bits in the short form of the opcode. */ | |
13976 | int nbits; | |
13977 | /* The number of bits in the extended form of the opcode. */ | |
13978 | int extbits; | |
13979 | /* The amount by which the short form is shifted when it is used; | |
13980 | for example, the sw instruction has a shift count of 2. */ | |
13981 | int shift; | |
13982 | /* The amount by which the short form is shifted when it is stored | |
13983 | into the instruction code. */ | |
13984 | int op_shift; | |
13985 | /* Non-zero if the short form is unsigned. */ | |
13986 | int unsp; | |
13987 | /* Non-zero if the extended form is unsigned. */ | |
13988 | int extu; | |
13989 | /* Non-zero if the value is PC relative. */ | |
13990 | int pcrel; | |
13991 | }; | |
13992 | ||
13993 | /* The mips16 immediate operand types. */ | |
13994 | ||
13995 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
13996 | { | |
13997 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
13998 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
13999 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
14000 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
14001 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
14002 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
14003 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
14004 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
14005 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
14006 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
14007 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
14008 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
14009 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
14010 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
14011 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
14012 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
14013 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
14014 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
14015 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
14016 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
14017 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
14018 | }; | |
14019 | ||
14020 | #define MIPS16_NUM_IMMED \ | |
14021 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
14022 | ||
b886a2ab RS |
14023 | /* Marshal immediate value VAL for an extended MIPS16 instruction. |
14024 | NBITS is the number of significant bits in VAL. */ | |
14025 | ||
14026 | static unsigned long | |
14027 | mips16_immed_extend (offsetT val, unsigned int nbits) | |
14028 | { | |
14029 | int extval; | |
14030 | if (nbits == 16) | |
14031 | { | |
14032 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
14033 | val &= 0x1f; | |
14034 | } | |
14035 | else if (nbits == 15) | |
14036 | { | |
14037 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
14038 | val &= 0xf; | |
14039 | } | |
14040 | else | |
14041 | { | |
14042 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
14043 | val = 0; | |
14044 | } | |
14045 | return (extval << 16) | val; | |
14046 | } | |
14047 | ||
5c04167a RS |
14048 | /* Install immediate value VAL into MIPS16 instruction *INSN, |
14049 | extending it if necessary. The instruction in *INSN may | |
14050 | already be extended. | |
14051 | ||
43c0598f RS |
14052 | RELOC is the relocation that produced VAL, or BFD_RELOC_UNUSED |
14053 | if none. In the former case, VAL is a 16-bit number with no | |
14054 | defined signedness. | |
14055 | ||
14056 | TYPE is the type of the immediate field. USER_INSN_LENGTH | |
14057 | is the length that the user requested, or 0 if none. */ | |
252b5132 RH |
14058 | |
14059 | static void | |
43c0598f RS |
14060 | mips16_immed (char *file, unsigned int line, int type, |
14061 | bfd_reloc_code_real_type reloc, offsetT val, | |
5c04167a | 14062 | unsigned int user_insn_length, unsigned long *insn) |
252b5132 | 14063 | { |
3994f87e | 14064 | const struct mips16_immed_operand *op; |
252b5132 | 14065 | int mintiny, maxtiny; |
252b5132 RH |
14066 | |
14067 | op = mips16_immed_operands; | |
14068 | while (op->type != type) | |
14069 | { | |
14070 | ++op; | |
9c2799c2 | 14071 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
14072 | } |
14073 | ||
14074 | if (op->unsp) | |
14075 | { | |
14076 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
14077 | { | |
14078 | mintiny = 1; | |
14079 | maxtiny = 1 << op->nbits; | |
14080 | } | |
14081 | else | |
14082 | { | |
14083 | mintiny = 0; | |
14084 | maxtiny = (1 << op->nbits) - 1; | |
14085 | } | |
43c0598f RS |
14086 | if (reloc != BFD_RELOC_UNUSED) |
14087 | val &= 0xffff; | |
252b5132 RH |
14088 | } |
14089 | else | |
14090 | { | |
14091 | mintiny = - (1 << (op->nbits - 1)); | |
14092 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
43c0598f RS |
14093 | if (reloc != BFD_RELOC_UNUSED) |
14094 | val = SEXT_16BIT (val); | |
252b5132 RH |
14095 | } |
14096 | ||
14097 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
14098 | if (type == 'p' || type == 'q') | |
14099 | val /= 2; | |
14100 | ||
14101 | if ((val & ((1 << op->shift) - 1)) != 0 | |
14102 | || val < (mintiny << op->shift) | |
14103 | || val > (maxtiny << op->shift)) | |
5c04167a RS |
14104 | { |
14105 | /* We need an extended instruction. */ | |
14106 | if (user_insn_length == 2) | |
14107 | as_bad_where (file, line, _("invalid unextended operand value")); | |
14108 | else | |
14109 | *insn |= MIPS16_EXTEND; | |
14110 | } | |
14111 | else if (user_insn_length == 4) | |
14112 | { | |
14113 | /* The operand doesn't force an unextended instruction to be extended. | |
14114 | Warn if the user wanted an extended instruction anyway. */ | |
14115 | *insn |= MIPS16_EXTEND; | |
14116 | as_warn_where (file, line, | |
14117 | _("extended operand requested but not required")); | |
14118 | } | |
252b5132 | 14119 | |
5c04167a | 14120 | if (mips16_opcode_length (*insn) == 2) |
252b5132 RH |
14121 | { |
14122 | int insnval; | |
14123 | ||
252b5132 RH |
14124 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); |
14125 | insnval <<= op->op_shift; | |
14126 | *insn |= insnval; | |
14127 | } | |
14128 | else | |
14129 | { | |
14130 | long minext, maxext; | |
252b5132 | 14131 | |
43c0598f | 14132 | if (reloc == BFD_RELOC_UNUSED) |
252b5132 | 14133 | { |
43c0598f RS |
14134 | if (op->extu) |
14135 | { | |
14136 | minext = 0; | |
14137 | maxext = (1 << op->extbits) - 1; | |
14138 | } | |
14139 | else | |
14140 | { | |
14141 | minext = - (1 << (op->extbits - 1)); | |
14142 | maxext = (1 << (op->extbits - 1)) - 1; | |
14143 | } | |
14144 | if (val < minext || val > maxext) | |
14145 | as_bad_where (file, line, | |
14146 | _("operand value out of range for instruction")); | |
252b5132 | 14147 | } |
252b5132 | 14148 | |
b886a2ab | 14149 | *insn |= mips16_immed_extend (val, op->extbits); |
252b5132 RH |
14150 | } |
14151 | } | |
14152 | \f | |
d6f16593 | 14153 | struct percent_op_match |
ad8d3bb3 | 14154 | { |
5e0116d5 RS |
14155 | const char *str; |
14156 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
14157 | }; |
14158 | ||
14159 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 14160 | { |
5e0116d5 | 14161 | {"%lo", BFD_RELOC_LO16}, |
ad8d3bb3 | 14162 | #ifdef OBJ_ELF |
5e0116d5 RS |
14163 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
14164 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
14165 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
14166 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
14167 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
14168 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
14169 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
14170 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
14171 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
14172 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
14173 | {"%half", BFD_RELOC_16}, | |
14174 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
14175 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
14176 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
14177 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
14178 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
14179 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
14180 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
14181 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
14182 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
14183 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
ad8d3bb3 | 14184 | #endif |
5e0116d5 | 14185 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
14186 | }; |
14187 | ||
d6f16593 MR |
14188 | static const struct percent_op_match mips16_percent_op[] = |
14189 | { | |
14190 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
14191 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
738e5348 RS |
14192 | {"%got", BFD_RELOC_MIPS16_GOT16}, |
14193 | {"%call16", BFD_RELOC_MIPS16_CALL16}, | |
d0f13682 CLT |
14194 | {"%hi", BFD_RELOC_MIPS16_HI16_S}, |
14195 | {"%tlsgd", BFD_RELOC_MIPS16_TLS_GD}, | |
14196 | {"%tlsldm", BFD_RELOC_MIPS16_TLS_LDM}, | |
14197 | {"%dtprel_hi", BFD_RELOC_MIPS16_TLS_DTPREL_HI16}, | |
14198 | {"%dtprel_lo", BFD_RELOC_MIPS16_TLS_DTPREL_LO16}, | |
14199 | {"%tprel_hi", BFD_RELOC_MIPS16_TLS_TPREL_HI16}, | |
14200 | {"%tprel_lo", BFD_RELOC_MIPS16_TLS_TPREL_LO16}, | |
14201 | {"%gottprel", BFD_RELOC_MIPS16_TLS_GOTTPREL} | |
d6f16593 MR |
14202 | }; |
14203 | ||
252b5132 | 14204 | |
5e0116d5 RS |
14205 | /* Return true if *STR points to a relocation operator. When returning true, |
14206 | move *STR over the operator and store its relocation code in *RELOC. | |
14207 | Leave both *STR and *RELOC alone when returning false. */ | |
14208 | ||
14209 | static bfd_boolean | |
17a2f251 | 14210 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 14211 | { |
d6f16593 MR |
14212 | const struct percent_op_match *percent_op; |
14213 | size_t limit, i; | |
14214 | ||
14215 | if (mips_opts.mips16) | |
14216 | { | |
14217 | percent_op = mips16_percent_op; | |
14218 | limit = ARRAY_SIZE (mips16_percent_op); | |
14219 | } | |
14220 | else | |
14221 | { | |
14222 | percent_op = mips_percent_op; | |
14223 | limit = ARRAY_SIZE (mips_percent_op); | |
14224 | } | |
76b3015f | 14225 | |
d6f16593 | 14226 | for (i = 0; i < limit; i++) |
5e0116d5 | 14227 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 14228 | { |
3f98094e DJ |
14229 | int len = strlen (percent_op[i].str); |
14230 | ||
14231 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
14232 | continue; | |
14233 | ||
5e0116d5 RS |
14234 | *str += strlen (percent_op[i].str); |
14235 | *reloc = percent_op[i].reloc; | |
394f9b3a | 14236 | |
5e0116d5 RS |
14237 | /* Check whether the output BFD supports this relocation. |
14238 | If not, issue an error and fall back on something safe. */ | |
14239 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 14240 | { |
20203fb9 | 14241 | as_bad (_("relocation %s isn't supported by the current ABI"), |
5e0116d5 | 14242 | percent_op[i].str); |
01a3f561 | 14243 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 14244 | } |
5e0116d5 | 14245 | return TRUE; |
394f9b3a | 14246 | } |
5e0116d5 | 14247 | return FALSE; |
394f9b3a | 14248 | } |
ad8d3bb3 | 14249 | |
ad8d3bb3 | 14250 | |
5e0116d5 RS |
14251 | /* Parse string STR as a 16-bit relocatable operand. Store the |
14252 | expression in *EP and the relocations in the array starting | |
14253 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 14254 | |
01a3f561 | 14255 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 14256 | |
5e0116d5 | 14257 | static size_t |
17a2f251 TS |
14258 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
14259 | char *str) | |
ad8d3bb3 | 14260 | { |
5e0116d5 RS |
14261 | bfd_reloc_code_real_type reversed_reloc[3]; |
14262 | size_t reloc_index, i; | |
09b8f35a RS |
14263 | int crux_depth, str_depth; |
14264 | char *crux; | |
5e0116d5 RS |
14265 | |
14266 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
14267 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
14268 | of the main expression and with CRUX_DEPTH containing the number | |
14269 | of open brackets at that point. */ | |
14270 | reloc_index = -1; | |
14271 | str_depth = 0; | |
14272 | do | |
fb1b3232 | 14273 | { |
09b8f35a RS |
14274 | reloc_index++; |
14275 | crux = str; | |
14276 | crux_depth = str_depth; | |
14277 | ||
14278 | /* Skip over whitespace and brackets, keeping count of the number | |
14279 | of brackets. */ | |
14280 | while (*str == ' ' || *str == '\t' || *str == '(') | |
14281 | if (*str++ == '(') | |
14282 | str_depth++; | |
5e0116d5 | 14283 | } |
09b8f35a RS |
14284 | while (*str == '%' |
14285 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
14286 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 14287 | |
09b8f35a | 14288 | my_getExpression (ep, crux); |
5e0116d5 | 14289 | str = expr_end; |
394f9b3a | 14290 | |
5e0116d5 | 14291 | /* Match every open bracket. */ |
09b8f35a | 14292 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 14293 | if (*str++ == ')') |
09b8f35a | 14294 | crux_depth--; |
394f9b3a | 14295 | |
09b8f35a | 14296 | if (crux_depth > 0) |
20203fb9 | 14297 | as_bad (_("unclosed '('")); |
394f9b3a | 14298 | |
5e0116d5 | 14299 | expr_end = str; |
252b5132 | 14300 | |
01a3f561 | 14301 | if (reloc_index != 0) |
64bdfcaf RS |
14302 | { |
14303 | prev_reloc_op_frag = frag_now; | |
14304 | for (i = 0; i < reloc_index; i++) | |
14305 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
14306 | } | |
fb1b3232 | 14307 | |
5e0116d5 | 14308 | return reloc_index; |
252b5132 RH |
14309 | } |
14310 | ||
14311 | static void | |
17a2f251 | 14312 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
14313 | { |
14314 | char *save_in; | |
14315 | ||
14316 | save_in = input_line_pointer; | |
14317 | input_line_pointer = str; | |
14318 | expression (ep); | |
14319 | expr_end = input_line_pointer; | |
14320 | input_line_pointer = save_in; | |
252b5132 RH |
14321 | } |
14322 | ||
252b5132 | 14323 | char * |
17a2f251 | 14324 | md_atof (int type, char *litP, int *sizeP) |
252b5132 | 14325 | { |
499ac353 | 14326 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
252b5132 RH |
14327 | } |
14328 | ||
14329 | void | |
17a2f251 | 14330 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
14331 | { |
14332 | if (target_big_endian) | |
14333 | number_to_chars_bigendian (buf, val, n); | |
14334 | else | |
14335 | number_to_chars_littleendian (buf, val, n); | |
14336 | } | |
14337 | \f | |
ae948b86 | 14338 | #ifdef OBJ_ELF |
e013f690 TS |
14339 | static int support_64bit_objects(void) |
14340 | { | |
14341 | const char **list, **l; | |
aa3d8fdf | 14342 | int yes; |
e013f690 TS |
14343 | |
14344 | list = bfd_target_list (); | |
14345 | for (l = list; *l != NULL; l++) | |
aeffff67 RS |
14346 | if (strcmp (*l, ELF_TARGET ("elf64-", "big")) == 0 |
14347 | || strcmp (*l, ELF_TARGET ("elf64-", "little")) == 0) | |
e013f690 | 14348 | break; |
aa3d8fdf | 14349 | yes = (*l != NULL); |
e013f690 | 14350 | free (list); |
aa3d8fdf | 14351 | return yes; |
e013f690 | 14352 | } |
ae948b86 | 14353 | #endif /* OBJ_ELF */ |
e013f690 | 14354 | |
78849248 | 14355 | const char *md_shortopts = "O::g::G:"; |
252b5132 | 14356 | |
23fce1e3 NC |
14357 | enum options |
14358 | { | |
14359 | OPTION_MARCH = OPTION_MD_BASE, | |
14360 | OPTION_MTUNE, | |
14361 | OPTION_MIPS1, | |
14362 | OPTION_MIPS2, | |
14363 | OPTION_MIPS3, | |
14364 | OPTION_MIPS4, | |
14365 | OPTION_MIPS5, | |
14366 | OPTION_MIPS32, | |
14367 | OPTION_MIPS64, | |
14368 | OPTION_MIPS32R2, | |
14369 | OPTION_MIPS64R2, | |
14370 | OPTION_MIPS16, | |
14371 | OPTION_NO_MIPS16, | |
14372 | OPTION_MIPS3D, | |
14373 | OPTION_NO_MIPS3D, | |
14374 | OPTION_MDMX, | |
14375 | OPTION_NO_MDMX, | |
14376 | OPTION_DSP, | |
14377 | OPTION_NO_DSP, | |
14378 | OPTION_MT, | |
14379 | OPTION_NO_MT, | |
14380 | OPTION_SMARTMIPS, | |
14381 | OPTION_NO_SMARTMIPS, | |
14382 | OPTION_DSPR2, | |
14383 | OPTION_NO_DSPR2, | |
df58fc94 RS |
14384 | OPTION_MICROMIPS, |
14385 | OPTION_NO_MICROMIPS, | |
dec0624d MR |
14386 | OPTION_MCU, |
14387 | OPTION_NO_MCU, | |
23fce1e3 NC |
14388 | OPTION_COMPAT_ARCH_BASE, |
14389 | OPTION_M4650, | |
14390 | OPTION_NO_M4650, | |
14391 | OPTION_M4010, | |
14392 | OPTION_NO_M4010, | |
14393 | OPTION_M4100, | |
14394 | OPTION_NO_M4100, | |
14395 | OPTION_M3900, | |
14396 | OPTION_NO_M3900, | |
14397 | OPTION_M7000_HILO_FIX, | |
6a32d874 CM |
14398 | OPTION_MNO_7000_HILO_FIX, |
14399 | OPTION_FIX_24K, | |
14400 | OPTION_NO_FIX_24K, | |
c67a084a NC |
14401 | OPTION_FIX_LOONGSON2F_JUMP, |
14402 | OPTION_NO_FIX_LOONGSON2F_JUMP, | |
14403 | OPTION_FIX_LOONGSON2F_NOP, | |
14404 | OPTION_NO_FIX_LOONGSON2F_NOP, | |
23fce1e3 NC |
14405 | OPTION_FIX_VR4120, |
14406 | OPTION_NO_FIX_VR4120, | |
14407 | OPTION_FIX_VR4130, | |
14408 | OPTION_NO_FIX_VR4130, | |
d954098f DD |
14409 | OPTION_FIX_CN63XXP1, |
14410 | OPTION_NO_FIX_CN63XXP1, | |
23fce1e3 NC |
14411 | OPTION_TRAP, |
14412 | OPTION_BREAK, | |
14413 | OPTION_EB, | |
14414 | OPTION_EL, | |
14415 | OPTION_FP32, | |
14416 | OPTION_GP32, | |
14417 | OPTION_CONSTRUCT_FLOATS, | |
14418 | OPTION_NO_CONSTRUCT_FLOATS, | |
14419 | OPTION_FP64, | |
14420 | OPTION_GP64, | |
14421 | OPTION_RELAX_BRANCH, | |
14422 | OPTION_NO_RELAX_BRANCH, | |
14423 | OPTION_MSHARED, | |
14424 | OPTION_MNO_SHARED, | |
14425 | OPTION_MSYM32, | |
14426 | OPTION_MNO_SYM32, | |
14427 | OPTION_SOFT_FLOAT, | |
14428 | OPTION_HARD_FLOAT, | |
14429 | OPTION_SINGLE_FLOAT, | |
14430 | OPTION_DOUBLE_FLOAT, | |
14431 | OPTION_32, | |
14432 | #ifdef OBJ_ELF | |
14433 | OPTION_CALL_SHARED, | |
14434 | OPTION_CALL_NONPIC, | |
14435 | OPTION_NON_SHARED, | |
14436 | OPTION_XGOT, | |
14437 | OPTION_MABI, | |
14438 | OPTION_N32, | |
14439 | OPTION_64, | |
14440 | OPTION_MDEBUG, | |
14441 | OPTION_NO_MDEBUG, | |
14442 | OPTION_PDR, | |
14443 | OPTION_NO_PDR, | |
14444 | OPTION_MVXWORKS_PIC, | |
14445 | #endif /* OBJ_ELF */ | |
14446 | OPTION_END_OF_ENUM | |
14447 | }; | |
14448 | ||
e972090a NC |
14449 | struct option md_longopts[] = |
14450 | { | |
f9b4148d | 14451 | /* Options which specify architecture. */ |
f9b4148d | 14452 | {"march", required_argument, NULL, OPTION_MARCH}, |
f9b4148d | 14453 | {"mtune", required_argument, NULL, OPTION_MTUNE}, |
252b5132 RH |
14454 | {"mips0", no_argument, NULL, OPTION_MIPS1}, |
14455 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
252b5132 | 14456 | {"mips2", no_argument, NULL, OPTION_MIPS2}, |
252b5132 | 14457 | {"mips3", no_argument, NULL, OPTION_MIPS3}, |
252b5132 | 14458 | {"mips4", no_argument, NULL, OPTION_MIPS4}, |
ae948b86 | 14459 | {"mips5", no_argument, NULL, OPTION_MIPS5}, |
ae948b86 | 14460 | {"mips32", no_argument, NULL, OPTION_MIPS32}, |
ae948b86 | 14461 | {"mips64", no_argument, NULL, OPTION_MIPS64}, |
f9b4148d | 14462 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, |
5f74bc13 | 14463 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, |
f9b4148d CD |
14464 | |
14465 | /* Options which specify Application Specific Extensions (ASEs). */ | |
f9b4148d | 14466 | {"mips16", no_argument, NULL, OPTION_MIPS16}, |
f9b4148d | 14467 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, |
f9b4148d | 14468 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, |
f9b4148d | 14469 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, |
f9b4148d | 14470 | {"mdmx", no_argument, NULL, OPTION_MDMX}, |
f9b4148d | 14471 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, |
74cd071d | 14472 | {"mdsp", no_argument, NULL, OPTION_DSP}, |
74cd071d | 14473 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, |
ef2e4d86 | 14474 | {"mmt", no_argument, NULL, OPTION_MT}, |
ef2e4d86 | 14475 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, |
e16bfa71 | 14476 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, |
e16bfa71 | 14477 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, |
8b082fb1 | 14478 | {"mdspr2", no_argument, NULL, OPTION_DSPR2}, |
8b082fb1 | 14479 | {"mno-dspr2", no_argument, NULL, OPTION_NO_DSPR2}, |
df58fc94 RS |
14480 | {"mmicromips", no_argument, NULL, OPTION_MICROMIPS}, |
14481 | {"mno-micromips", no_argument, NULL, OPTION_NO_MICROMIPS}, | |
dec0624d MR |
14482 | {"mmcu", no_argument, NULL, OPTION_MCU}, |
14483 | {"mno-mcu", no_argument, NULL, OPTION_NO_MCU}, | |
f9b4148d CD |
14484 | |
14485 | /* Old-style architecture options. Don't add more of these. */ | |
f9b4148d | 14486 | {"m4650", no_argument, NULL, OPTION_M4650}, |
f9b4148d | 14487 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, |
f9b4148d | 14488 | {"m4010", no_argument, NULL, OPTION_M4010}, |
f9b4148d | 14489 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, |
f9b4148d | 14490 | {"m4100", no_argument, NULL, OPTION_M4100}, |
f9b4148d | 14491 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, |
f9b4148d | 14492 | {"m3900", no_argument, NULL, OPTION_M3900}, |
f9b4148d CD |
14493 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, |
14494 | ||
14495 | /* Options which enable bug fixes. */ | |
f9b4148d | 14496 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, |
f9b4148d CD |
14497 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, |
14498 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
c67a084a NC |
14499 | {"mfix-loongson2f-jump", no_argument, NULL, OPTION_FIX_LOONGSON2F_JUMP}, |
14500 | {"mno-fix-loongson2f-jump", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_JUMP}, | |
14501 | {"mfix-loongson2f-nop", no_argument, NULL, OPTION_FIX_LOONGSON2F_NOP}, | |
14502 | {"mno-fix-loongson2f-nop", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_NOP}, | |
d766e8ec RS |
14503 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, |
14504 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
7d8e00cf RS |
14505 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, |
14506 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
6a32d874 CM |
14507 | {"mfix-24k", no_argument, NULL, OPTION_FIX_24K}, |
14508 | {"mno-fix-24k", no_argument, NULL, OPTION_NO_FIX_24K}, | |
d954098f DD |
14509 | {"mfix-cn63xxp1", no_argument, NULL, OPTION_FIX_CN63XXP1}, |
14510 | {"mno-fix-cn63xxp1", no_argument, NULL, OPTION_NO_FIX_CN63XXP1}, | |
f9b4148d CD |
14511 | |
14512 | /* Miscellaneous options. */ | |
252b5132 RH |
14513 | {"trap", no_argument, NULL, OPTION_TRAP}, |
14514 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
252b5132 RH |
14515 | {"break", no_argument, NULL, OPTION_BREAK}, |
14516 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
252b5132 | 14517 | {"EB", no_argument, NULL, OPTION_EB}, |
252b5132 | 14518 | {"EL", no_argument, NULL, OPTION_EL}, |
ae948b86 | 14519 | {"mfp32", no_argument, NULL, OPTION_FP32}, |
c97ef257 | 14520 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
119d663a | 14521 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
119d663a | 14522 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
316f5878 | 14523 | {"mfp64", no_argument, NULL, OPTION_FP64}, |
ae948b86 | 14524 | {"mgp64", no_argument, NULL, OPTION_GP64}, |
4a6a3df4 AO |
14525 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, |
14526 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
aa6975fb ILT |
14527 | {"mshared", no_argument, NULL, OPTION_MSHARED}, |
14528 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
aed1a261 RS |
14529 | {"msym32", no_argument, NULL, OPTION_MSYM32}, |
14530 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
037b32b9 AN |
14531 | {"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT}, |
14532 | {"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT}, | |
037b32b9 AN |
14533 | {"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT}, |
14534 | {"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT}, | |
23fce1e3 NC |
14535 | |
14536 | /* Strictly speaking this next option is ELF specific, | |
14537 | but we allow it for other ports as well in order to | |
14538 | make testing easier. */ | |
14539 | {"32", no_argument, NULL, OPTION_32}, | |
037b32b9 | 14540 | |
f9b4148d | 14541 | /* ELF-specific options. */ |
156c2f8b | 14542 | #ifdef OBJ_ELF |
156c2f8b NC |
14543 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
14544 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
861fb55a | 14545 | {"call_nonpic", no_argument, NULL, OPTION_CALL_NONPIC}, |
156c2f8b NC |
14546 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
14547 | {"xgot", no_argument, NULL, OPTION_XGOT}, | |
ae948b86 | 14548 | {"mabi", required_argument, NULL, OPTION_MABI}, |
e013f690 | 14549 | {"n32", no_argument, NULL, OPTION_N32}, |
156c2f8b | 14550 | {"64", no_argument, NULL, OPTION_64}, |
ecb4347a | 14551 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, |
ecb4347a | 14552 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, |
dcd410fe | 14553 | {"mpdr", no_argument, NULL, OPTION_PDR}, |
dcd410fe | 14554 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, |
0a44bf69 | 14555 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, |
ae948b86 | 14556 | #endif /* OBJ_ELF */ |
f9b4148d | 14557 | |
252b5132 RH |
14558 | {NULL, no_argument, NULL, 0} |
14559 | }; | |
156c2f8b | 14560 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 14561 | |
316f5878 RS |
14562 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
14563 | NEW_VALUE. Warn if another value was already specified. Note: | |
14564 | we have to defer parsing the -march and -mtune arguments in order | |
14565 | to handle 'from-abi' correctly, since the ABI might be specified | |
14566 | in a later argument. */ | |
14567 | ||
14568 | static void | |
17a2f251 | 14569 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
14570 | { |
14571 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
14572 | as_warn (_("A different %s was already specified, is now %s"), | |
14573 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
14574 | new_value); | |
14575 | ||
14576 | *string_ptr = new_value; | |
14577 | } | |
14578 | ||
252b5132 | 14579 | int |
17a2f251 | 14580 | md_parse_option (int c, char *arg) |
252b5132 RH |
14581 | { |
14582 | switch (c) | |
14583 | { | |
119d663a NC |
14584 | case OPTION_CONSTRUCT_FLOATS: |
14585 | mips_disable_float_construction = 0; | |
14586 | break; | |
bdaaa2e1 | 14587 | |
119d663a NC |
14588 | case OPTION_NO_CONSTRUCT_FLOATS: |
14589 | mips_disable_float_construction = 1; | |
14590 | break; | |
bdaaa2e1 | 14591 | |
252b5132 RH |
14592 | case OPTION_TRAP: |
14593 | mips_trap = 1; | |
14594 | break; | |
14595 | ||
14596 | case OPTION_BREAK: | |
14597 | mips_trap = 0; | |
14598 | break; | |
14599 | ||
14600 | case OPTION_EB: | |
14601 | target_big_endian = 1; | |
14602 | break; | |
14603 | ||
14604 | case OPTION_EL: | |
14605 | target_big_endian = 0; | |
14606 | break; | |
14607 | ||
14608 | case 'O': | |
4ffff32f TS |
14609 | if (arg == NULL) |
14610 | mips_optimize = 1; | |
14611 | else if (arg[0] == '0') | |
14612 | mips_optimize = 0; | |
14613 | else if (arg[0] == '1') | |
252b5132 RH |
14614 | mips_optimize = 1; |
14615 | else | |
14616 | mips_optimize = 2; | |
14617 | break; | |
14618 | ||
14619 | case 'g': | |
14620 | if (arg == NULL) | |
14621 | mips_debug = 2; | |
14622 | else | |
14623 | mips_debug = atoi (arg); | |
252b5132 RH |
14624 | break; |
14625 | ||
14626 | case OPTION_MIPS1: | |
316f5878 | 14627 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
14628 | break; |
14629 | ||
14630 | case OPTION_MIPS2: | |
316f5878 | 14631 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
14632 | break; |
14633 | ||
14634 | case OPTION_MIPS3: | |
316f5878 | 14635 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
14636 | break; |
14637 | ||
14638 | case OPTION_MIPS4: | |
316f5878 | 14639 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
14640 | break; |
14641 | ||
84ea6cf2 | 14642 | case OPTION_MIPS5: |
316f5878 | 14643 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
14644 | break; |
14645 | ||
e7af610e | 14646 | case OPTION_MIPS32: |
316f5878 | 14647 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
14648 | break; |
14649 | ||
af7ee8bf CD |
14650 | case OPTION_MIPS32R2: |
14651 | file_mips_isa = ISA_MIPS32R2; | |
14652 | break; | |
14653 | ||
5f74bc13 CD |
14654 | case OPTION_MIPS64R2: |
14655 | file_mips_isa = ISA_MIPS64R2; | |
14656 | break; | |
14657 | ||
84ea6cf2 | 14658 | case OPTION_MIPS64: |
316f5878 | 14659 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
14660 | break; |
14661 | ||
ec68c924 | 14662 | case OPTION_MTUNE: |
316f5878 RS |
14663 | mips_set_option_string (&mips_tune_string, arg); |
14664 | break; | |
ec68c924 | 14665 | |
316f5878 RS |
14666 | case OPTION_MARCH: |
14667 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
14668 | break; |
14669 | ||
14670 | case OPTION_M4650: | |
316f5878 RS |
14671 | mips_set_option_string (&mips_arch_string, "4650"); |
14672 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
14673 | break; |
14674 | ||
14675 | case OPTION_NO_M4650: | |
14676 | break; | |
14677 | ||
14678 | case OPTION_M4010: | |
316f5878 RS |
14679 | mips_set_option_string (&mips_arch_string, "4010"); |
14680 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
14681 | break; |
14682 | ||
14683 | case OPTION_NO_M4010: | |
14684 | break; | |
14685 | ||
14686 | case OPTION_M4100: | |
316f5878 RS |
14687 | mips_set_option_string (&mips_arch_string, "4100"); |
14688 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
14689 | break; |
14690 | ||
14691 | case OPTION_NO_M4100: | |
14692 | break; | |
14693 | ||
252b5132 | 14694 | case OPTION_M3900: |
316f5878 RS |
14695 | mips_set_option_string (&mips_arch_string, "3900"); |
14696 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 14697 | break; |
bdaaa2e1 | 14698 | |
252b5132 RH |
14699 | case OPTION_NO_M3900: |
14700 | break; | |
14701 | ||
deec1734 CD |
14702 | case OPTION_MDMX: |
14703 | mips_opts.ase_mdmx = 1; | |
14704 | break; | |
14705 | ||
14706 | case OPTION_NO_MDMX: | |
14707 | mips_opts.ase_mdmx = 0; | |
14708 | break; | |
14709 | ||
74cd071d CF |
14710 | case OPTION_DSP: |
14711 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 14712 | mips_opts.ase_dspr2 = 0; |
74cd071d CF |
14713 | break; |
14714 | ||
14715 | case OPTION_NO_DSP: | |
8b082fb1 TS |
14716 | mips_opts.ase_dsp = 0; |
14717 | mips_opts.ase_dspr2 = 0; | |
14718 | break; | |
14719 | ||
14720 | case OPTION_DSPR2: | |
14721 | mips_opts.ase_dspr2 = 1; | |
14722 | mips_opts.ase_dsp = 1; | |
14723 | break; | |
14724 | ||
14725 | case OPTION_NO_DSPR2: | |
14726 | mips_opts.ase_dspr2 = 0; | |
74cd071d CF |
14727 | mips_opts.ase_dsp = 0; |
14728 | break; | |
14729 | ||
ef2e4d86 CF |
14730 | case OPTION_MT: |
14731 | mips_opts.ase_mt = 1; | |
14732 | break; | |
14733 | ||
14734 | case OPTION_NO_MT: | |
14735 | mips_opts.ase_mt = 0; | |
14736 | break; | |
14737 | ||
dec0624d MR |
14738 | case OPTION_MCU: |
14739 | mips_opts.ase_mcu = 1; | |
14740 | break; | |
14741 | ||
14742 | case OPTION_NO_MCU: | |
14743 | mips_opts.ase_mcu = 0; | |
14744 | break; | |
14745 | ||
df58fc94 RS |
14746 | case OPTION_MICROMIPS: |
14747 | if (mips_opts.mips16 == 1) | |
14748 | { | |
14749 | as_bad (_("-mmicromips cannot be used with -mips16")); | |
14750 | return 0; | |
14751 | } | |
14752 | mips_opts.micromips = 1; | |
14753 | mips_no_prev_insn (); | |
14754 | break; | |
14755 | ||
14756 | case OPTION_NO_MICROMIPS: | |
14757 | mips_opts.micromips = 0; | |
14758 | mips_no_prev_insn (); | |
14759 | break; | |
14760 | ||
252b5132 | 14761 | case OPTION_MIPS16: |
df58fc94 RS |
14762 | if (mips_opts.micromips == 1) |
14763 | { | |
14764 | as_bad (_("-mips16 cannot be used with -micromips")); | |
14765 | return 0; | |
14766 | } | |
252b5132 | 14767 | mips_opts.mips16 = 1; |
7d10b47d | 14768 | mips_no_prev_insn (); |
252b5132 RH |
14769 | break; |
14770 | ||
14771 | case OPTION_NO_MIPS16: | |
14772 | mips_opts.mips16 = 0; | |
7d10b47d | 14773 | mips_no_prev_insn (); |
252b5132 RH |
14774 | break; |
14775 | ||
1f25f5d3 CD |
14776 | case OPTION_MIPS3D: |
14777 | mips_opts.ase_mips3d = 1; | |
14778 | break; | |
14779 | ||
14780 | case OPTION_NO_MIPS3D: | |
14781 | mips_opts.ase_mips3d = 0; | |
14782 | break; | |
14783 | ||
e16bfa71 TS |
14784 | case OPTION_SMARTMIPS: |
14785 | mips_opts.ase_smartmips = 1; | |
14786 | break; | |
14787 | ||
14788 | case OPTION_NO_SMARTMIPS: | |
14789 | mips_opts.ase_smartmips = 0; | |
14790 | break; | |
14791 | ||
6a32d874 CM |
14792 | case OPTION_FIX_24K: |
14793 | mips_fix_24k = 1; | |
14794 | break; | |
14795 | ||
14796 | case OPTION_NO_FIX_24K: | |
14797 | mips_fix_24k = 0; | |
14798 | break; | |
14799 | ||
c67a084a NC |
14800 | case OPTION_FIX_LOONGSON2F_JUMP: |
14801 | mips_fix_loongson2f_jump = TRUE; | |
14802 | break; | |
14803 | ||
14804 | case OPTION_NO_FIX_LOONGSON2F_JUMP: | |
14805 | mips_fix_loongson2f_jump = FALSE; | |
14806 | break; | |
14807 | ||
14808 | case OPTION_FIX_LOONGSON2F_NOP: | |
14809 | mips_fix_loongson2f_nop = TRUE; | |
14810 | break; | |
14811 | ||
14812 | case OPTION_NO_FIX_LOONGSON2F_NOP: | |
14813 | mips_fix_loongson2f_nop = FALSE; | |
14814 | break; | |
14815 | ||
d766e8ec RS |
14816 | case OPTION_FIX_VR4120: |
14817 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
14818 | break; |
14819 | ||
d766e8ec RS |
14820 | case OPTION_NO_FIX_VR4120: |
14821 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
14822 | break; |
14823 | ||
7d8e00cf RS |
14824 | case OPTION_FIX_VR4130: |
14825 | mips_fix_vr4130 = 1; | |
14826 | break; | |
14827 | ||
14828 | case OPTION_NO_FIX_VR4130: | |
14829 | mips_fix_vr4130 = 0; | |
14830 | break; | |
14831 | ||
d954098f DD |
14832 | case OPTION_FIX_CN63XXP1: |
14833 | mips_fix_cn63xxp1 = TRUE; | |
14834 | break; | |
14835 | ||
14836 | case OPTION_NO_FIX_CN63XXP1: | |
14837 | mips_fix_cn63xxp1 = FALSE; | |
14838 | break; | |
14839 | ||
4a6a3df4 AO |
14840 | case OPTION_RELAX_BRANCH: |
14841 | mips_relax_branch = 1; | |
14842 | break; | |
14843 | ||
14844 | case OPTION_NO_RELAX_BRANCH: | |
14845 | mips_relax_branch = 0; | |
14846 | break; | |
14847 | ||
aa6975fb ILT |
14848 | case OPTION_MSHARED: |
14849 | mips_in_shared = TRUE; | |
14850 | break; | |
14851 | ||
14852 | case OPTION_MNO_SHARED: | |
14853 | mips_in_shared = FALSE; | |
14854 | break; | |
14855 | ||
aed1a261 RS |
14856 | case OPTION_MSYM32: |
14857 | mips_opts.sym32 = TRUE; | |
14858 | break; | |
14859 | ||
14860 | case OPTION_MNO_SYM32: | |
14861 | mips_opts.sym32 = FALSE; | |
14862 | break; | |
14863 | ||
0f074f60 | 14864 | #ifdef OBJ_ELF |
252b5132 RH |
14865 | /* When generating ELF code, we permit -KPIC and -call_shared to |
14866 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
14867 | intended to be compatible with Irix 5. */ | |
14868 | case OPTION_CALL_SHARED: | |
f43abd2b | 14869 | if (!IS_ELF) |
252b5132 RH |
14870 | { |
14871 | as_bad (_("-call_shared is supported only for ELF format")); | |
14872 | return 0; | |
14873 | } | |
14874 | mips_pic = SVR4_PIC; | |
143d77c5 | 14875 | mips_abicalls = TRUE; |
252b5132 RH |
14876 | break; |
14877 | ||
861fb55a DJ |
14878 | case OPTION_CALL_NONPIC: |
14879 | if (!IS_ELF) | |
14880 | { | |
14881 | as_bad (_("-call_nonpic is supported only for ELF format")); | |
14882 | return 0; | |
14883 | } | |
14884 | mips_pic = NO_PIC; | |
14885 | mips_abicalls = TRUE; | |
14886 | break; | |
14887 | ||
252b5132 | 14888 | case OPTION_NON_SHARED: |
f43abd2b | 14889 | if (!IS_ELF) |
252b5132 RH |
14890 | { |
14891 | as_bad (_("-non_shared is supported only for ELF format")); | |
14892 | return 0; | |
14893 | } | |
14894 | mips_pic = NO_PIC; | |
143d77c5 | 14895 | mips_abicalls = FALSE; |
252b5132 RH |
14896 | break; |
14897 | ||
44075ae2 TS |
14898 | /* The -xgot option tells the assembler to use 32 bit offsets |
14899 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
14900 | compatibility. */ |
14901 | case OPTION_XGOT: | |
14902 | mips_big_got = 1; | |
14903 | break; | |
0f074f60 | 14904 | #endif /* OBJ_ELF */ |
252b5132 RH |
14905 | |
14906 | case 'G': | |
6caf9ef4 TS |
14907 | g_switch_value = atoi (arg); |
14908 | g_switch_seen = 1; | |
252b5132 RH |
14909 | break; |
14910 | ||
34ba82a8 TS |
14911 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
14912 | and -mabi=64. */ | |
252b5132 | 14913 | case OPTION_32: |
23fce1e3 NC |
14914 | if (IS_ELF) |
14915 | mips_abi = O32_ABI; | |
14916 | /* We silently ignore -32 for non-ELF targets. This greatly | |
14917 | simplifies the construction of the MIPS GAS test cases. */ | |
252b5132 RH |
14918 | break; |
14919 | ||
23fce1e3 | 14920 | #ifdef OBJ_ELF |
e013f690 | 14921 | case OPTION_N32: |
f43abd2b | 14922 | if (!IS_ELF) |
34ba82a8 TS |
14923 | { |
14924 | as_bad (_("-n32 is supported for ELF format only")); | |
14925 | return 0; | |
14926 | } | |
316f5878 | 14927 | mips_abi = N32_ABI; |
e013f690 | 14928 | break; |
252b5132 | 14929 | |
e013f690 | 14930 | case OPTION_64: |
f43abd2b | 14931 | if (!IS_ELF) |
34ba82a8 TS |
14932 | { |
14933 | as_bad (_("-64 is supported for ELF format only")); | |
14934 | return 0; | |
14935 | } | |
316f5878 | 14936 | mips_abi = N64_ABI; |
f43abd2b | 14937 | if (!support_64bit_objects()) |
e013f690 | 14938 | as_fatal (_("No compiled in support for 64 bit object file format")); |
252b5132 | 14939 | break; |
ae948b86 | 14940 | #endif /* OBJ_ELF */ |
252b5132 | 14941 | |
c97ef257 | 14942 | case OPTION_GP32: |
a325df1d | 14943 | file_mips_gp32 = 1; |
c97ef257 AH |
14944 | break; |
14945 | ||
14946 | case OPTION_GP64: | |
a325df1d | 14947 | file_mips_gp32 = 0; |
c97ef257 | 14948 | break; |
252b5132 | 14949 | |
ca4e0257 | 14950 | case OPTION_FP32: |
a325df1d | 14951 | file_mips_fp32 = 1; |
316f5878 RS |
14952 | break; |
14953 | ||
14954 | case OPTION_FP64: | |
14955 | file_mips_fp32 = 0; | |
ca4e0257 RS |
14956 | break; |
14957 | ||
037b32b9 AN |
14958 | case OPTION_SINGLE_FLOAT: |
14959 | file_mips_single_float = 1; | |
14960 | break; | |
14961 | ||
14962 | case OPTION_DOUBLE_FLOAT: | |
14963 | file_mips_single_float = 0; | |
14964 | break; | |
14965 | ||
14966 | case OPTION_SOFT_FLOAT: | |
14967 | file_mips_soft_float = 1; | |
14968 | break; | |
14969 | ||
14970 | case OPTION_HARD_FLOAT: | |
14971 | file_mips_soft_float = 0; | |
14972 | break; | |
14973 | ||
ae948b86 | 14974 | #ifdef OBJ_ELF |
252b5132 | 14975 | case OPTION_MABI: |
f43abd2b | 14976 | if (!IS_ELF) |
34ba82a8 TS |
14977 | { |
14978 | as_bad (_("-mabi is supported for ELF format only")); | |
14979 | return 0; | |
14980 | } | |
e013f690 | 14981 | if (strcmp (arg, "32") == 0) |
316f5878 | 14982 | mips_abi = O32_ABI; |
e013f690 | 14983 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 14984 | mips_abi = O64_ABI; |
e013f690 | 14985 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 14986 | mips_abi = N32_ABI; |
e013f690 TS |
14987 | else if (strcmp (arg, "64") == 0) |
14988 | { | |
316f5878 | 14989 | mips_abi = N64_ABI; |
e013f690 TS |
14990 | if (! support_64bit_objects()) |
14991 | as_fatal (_("No compiled in support for 64 bit object file " | |
14992 | "format")); | |
14993 | } | |
14994 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 14995 | mips_abi = EABI_ABI; |
e013f690 | 14996 | else |
da0e507f TS |
14997 | { |
14998 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
14999 | return 0; | |
15000 | } | |
252b5132 | 15001 | break; |
e013f690 | 15002 | #endif /* OBJ_ELF */ |
252b5132 | 15003 | |
6b76fefe | 15004 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 15005 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
15006 | break; |
15007 | ||
9ee72ff1 | 15008 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 15009 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
15010 | break; |
15011 | ||
ecb4347a DJ |
15012 | #ifdef OBJ_ELF |
15013 | case OPTION_MDEBUG: | |
b34976b6 | 15014 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
15015 | break; |
15016 | ||
15017 | case OPTION_NO_MDEBUG: | |
b34976b6 | 15018 | mips_flag_mdebug = FALSE; |
ecb4347a | 15019 | break; |
dcd410fe RO |
15020 | |
15021 | case OPTION_PDR: | |
15022 | mips_flag_pdr = TRUE; | |
15023 | break; | |
15024 | ||
15025 | case OPTION_NO_PDR: | |
15026 | mips_flag_pdr = FALSE; | |
15027 | break; | |
0a44bf69 RS |
15028 | |
15029 | case OPTION_MVXWORKS_PIC: | |
15030 | mips_pic = VXWORKS_PIC; | |
15031 | break; | |
ecb4347a DJ |
15032 | #endif /* OBJ_ELF */ |
15033 | ||
252b5132 RH |
15034 | default: |
15035 | return 0; | |
15036 | } | |
15037 | ||
c67a084a NC |
15038 | mips_fix_loongson2f = mips_fix_loongson2f_nop || mips_fix_loongson2f_jump; |
15039 | ||
252b5132 RH |
15040 | return 1; |
15041 | } | |
316f5878 RS |
15042 | \f |
15043 | /* Set up globals to generate code for the ISA or processor | |
15044 | described by INFO. */ | |
252b5132 | 15045 | |
252b5132 | 15046 | static void |
17a2f251 | 15047 | mips_set_architecture (const struct mips_cpu_info *info) |
252b5132 | 15048 | { |
316f5878 | 15049 | if (info != 0) |
252b5132 | 15050 | { |
fef14a42 TS |
15051 | file_mips_arch = info->cpu; |
15052 | mips_opts.arch = info->cpu; | |
316f5878 | 15053 | mips_opts.isa = info->isa; |
252b5132 | 15054 | } |
252b5132 RH |
15055 | } |
15056 | ||
252b5132 | 15057 | |
316f5878 | 15058 | /* Likewise for tuning. */ |
252b5132 | 15059 | |
316f5878 | 15060 | static void |
17a2f251 | 15061 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
15062 | { |
15063 | if (info != 0) | |
fef14a42 | 15064 | mips_tune = info->cpu; |
316f5878 | 15065 | } |
80cc45a5 | 15066 | |
34ba82a8 | 15067 | |
252b5132 | 15068 | void |
17a2f251 | 15069 | mips_after_parse_args (void) |
e9670677 | 15070 | { |
fef14a42 TS |
15071 | const struct mips_cpu_info *arch_info = 0; |
15072 | const struct mips_cpu_info *tune_info = 0; | |
15073 | ||
e9670677 | 15074 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 15075 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 15076 | { |
6caf9ef4 | 15077 | if (g_switch_seen && g_switch_value != 0) |
e9670677 MR |
15078 | as_bad (_("-G not supported in this configuration.")); |
15079 | g_switch_value = 0; | |
15080 | } | |
15081 | ||
cac012d6 AO |
15082 | if (mips_abi == NO_ABI) |
15083 | mips_abi = MIPS_DEFAULT_ABI; | |
15084 | ||
22923709 RS |
15085 | /* The following code determines the architecture and register size. |
15086 | Similar code was added to GCC 3.3 (see override_options() in | |
15087 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
15088 | as much as possible. */ | |
e9670677 | 15089 | |
316f5878 | 15090 | if (mips_arch_string != 0) |
fef14a42 | 15091 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 15092 | |
316f5878 | 15093 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 15094 | { |
316f5878 | 15095 | /* Handle -mipsN. At this point, file_mips_isa contains the |
fef14a42 | 15096 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 15097 | the -march selection (if any). */ |
fef14a42 | 15098 | if (arch_info != 0) |
e9670677 | 15099 | { |
316f5878 RS |
15100 | /* -march takes precedence over -mipsN, since it is more descriptive. |
15101 | There's no harm in specifying both as long as the ISA levels | |
15102 | are the same. */ | |
fef14a42 | 15103 | if (file_mips_isa != arch_info->isa) |
316f5878 RS |
15104 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), |
15105 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
fef14a42 | 15106 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 15107 | } |
316f5878 | 15108 | else |
fef14a42 | 15109 | arch_info = mips_cpu_info_from_isa (file_mips_isa); |
e9670677 MR |
15110 | } |
15111 | ||
fef14a42 | 15112 | if (arch_info == 0) |
95bfe26e MF |
15113 | { |
15114 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
15115 | gas_assert (arch_info); | |
15116 | } | |
e9670677 | 15117 | |
fef14a42 | 15118 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
20203fb9 | 15119 | as_bad (_("-march=%s is not compatible with the selected ABI"), |
fef14a42 TS |
15120 | arch_info->name); |
15121 | ||
15122 | mips_set_architecture (arch_info); | |
15123 | ||
15124 | /* Optimize for file_mips_arch, unless -mtune selects a different processor. */ | |
15125 | if (mips_tune_string != 0) | |
15126 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 15127 | |
fef14a42 TS |
15128 | if (tune_info == 0) |
15129 | mips_set_tune (arch_info); | |
15130 | else | |
15131 | mips_set_tune (tune_info); | |
e9670677 | 15132 | |
316f5878 | 15133 | if (file_mips_gp32 >= 0) |
e9670677 | 15134 | { |
316f5878 RS |
15135 | /* The user specified the size of the integer registers. Make sure |
15136 | it agrees with the ABI and ISA. */ | |
15137 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
15138 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
15139 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
15140 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
15141 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
15142 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
15143 | } |
15144 | else | |
15145 | { | |
316f5878 RS |
15146 | /* Infer the integer register size from the ABI and processor. |
15147 | Restrict ourselves to 32-bit registers if that's all the | |
15148 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
15149 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
15150 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
15151 | } |
15152 | ||
ad3fea08 TS |
15153 | switch (file_mips_fp32) |
15154 | { | |
15155 | default: | |
15156 | case -1: | |
15157 | /* No user specified float register size. | |
15158 | ??? GAS treats single-float processors as though they had 64-bit | |
15159 | float registers (although it complains when double-precision | |
15160 | instructions are used). As things stand, saying they have 32-bit | |
15161 | registers would lead to spurious "register must be even" messages. | |
15162 | So here we assume float registers are never smaller than the | |
15163 | integer ones. */ | |
15164 | if (file_mips_gp32 == 0) | |
15165 | /* 64-bit integer registers implies 64-bit float registers. */ | |
15166 | file_mips_fp32 = 0; | |
15167 | else if ((mips_opts.ase_mips3d > 0 || mips_opts.ase_mdmx > 0) | |
15168 | && ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
15169 | /* -mips3d and -mdmx imply 64-bit float registers, if possible. */ | |
15170 | file_mips_fp32 = 0; | |
15171 | else | |
15172 | /* 32-bit float registers. */ | |
15173 | file_mips_fp32 = 1; | |
15174 | break; | |
15175 | ||
15176 | /* The user specified the size of the float registers. Check if it | |
15177 | agrees with the ABI and ISA. */ | |
15178 | case 0: | |
15179 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
15180 | as_bad (_("-mfp64 used with a 32-bit fpu")); | |
15181 | else if (ABI_NEEDS_32BIT_REGS (mips_abi) | |
15182 | && !ISA_HAS_MXHC1 (mips_opts.isa)) | |
15183 | as_warn (_("-mfp64 used with a 32-bit ABI")); | |
15184 | break; | |
15185 | case 1: | |
15186 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
15187 | as_warn (_("-mfp32 used with a 64-bit ABI")); | |
15188 | break; | |
15189 | } | |
e9670677 | 15190 | |
316f5878 | 15191 | /* End of GCC-shared inference code. */ |
e9670677 | 15192 | |
17a2f251 TS |
15193 | /* This flag is set when we have a 64-bit capable CPU but use only |
15194 | 32-bit wide registers. Note that EABI does not use it. */ | |
15195 | if (ISA_HAS_64BIT_REGS (mips_opts.isa) | |
15196 | && ((mips_abi == NO_ABI && file_mips_gp32 == 1) | |
15197 | || mips_abi == O32_ABI)) | |
316f5878 | 15198 | mips_32bitmode = 1; |
e9670677 MR |
15199 | |
15200 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
15201 | as_bad (_("trap exception not supported at ISA 1")); | |
15202 | ||
e9670677 MR |
15203 | /* If the selected architecture includes support for ASEs, enable |
15204 | generation of code for them. */ | |
a4672219 | 15205 | if (mips_opts.mips16 == -1) |
fef14a42 | 15206 | mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_arch)) ? 1 : 0; |
df58fc94 RS |
15207 | if (mips_opts.micromips == -1) |
15208 | mips_opts.micromips = (CPU_HAS_MICROMIPS (file_mips_arch)) ? 1 : 0; | |
ffdefa66 | 15209 | if (mips_opts.ase_mips3d == -1) |
65263ce3 | 15210 | mips_opts.ase_mips3d = ((arch_info->flags & MIPS_CPU_ASE_MIPS3D) |
ad3fea08 TS |
15211 | && file_mips_fp32 == 0) ? 1 : 0; |
15212 | if (mips_opts.ase_mips3d && file_mips_fp32 == 1) | |
15213 | as_bad (_("-mfp32 used with -mips3d")); | |
15214 | ||
ffdefa66 | 15215 | if (mips_opts.ase_mdmx == -1) |
65263ce3 | 15216 | mips_opts.ase_mdmx = ((arch_info->flags & MIPS_CPU_ASE_MDMX) |
ad3fea08 TS |
15217 | && file_mips_fp32 == 0) ? 1 : 0; |
15218 | if (mips_opts.ase_mdmx && file_mips_fp32 == 1) | |
15219 | as_bad (_("-mfp32 used with -mdmx")); | |
15220 | ||
15221 | if (mips_opts.ase_smartmips == -1) | |
15222 | mips_opts.ase_smartmips = (arch_info->flags & MIPS_CPU_ASE_SMARTMIPS) ? 1 : 0; | |
15223 | if (mips_opts.ase_smartmips && !ISA_SUPPORTS_SMARTMIPS) | |
20203fb9 NC |
15224 | as_warn (_("%s ISA does not support SmartMIPS"), |
15225 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 15226 | |
74cd071d | 15227 | if (mips_opts.ase_dsp == -1) |
ad3fea08 TS |
15228 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; |
15229 | if (mips_opts.ase_dsp && !ISA_SUPPORTS_DSP_ASE) | |
20203fb9 NC |
15230 | as_warn (_("%s ISA does not support DSP ASE"), |
15231 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 15232 | |
8b082fb1 TS |
15233 | if (mips_opts.ase_dspr2 == -1) |
15234 | { | |
15235 | mips_opts.ase_dspr2 = (arch_info->flags & MIPS_CPU_ASE_DSPR2) ? 1 : 0; | |
15236 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; | |
15237 | } | |
15238 | if (mips_opts.ase_dspr2 && !ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 NC |
15239 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
15240 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
8b082fb1 | 15241 | |
ef2e4d86 | 15242 | if (mips_opts.ase_mt == -1) |
ad3fea08 TS |
15243 | mips_opts.ase_mt = (arch_info->flags & MIPS_CPU_ASE_MT) ? 1 : 0; |
15244 | if (mips_opts.ase_mt && !ISA_SUPPORTS_MT_ASE) | |
20203fb9 NC |
15245 | as_warn (_("%s ISA does not support MT ASE"), |
15246 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
e9670677 | 15247 | |
dec0624d MR |
15248 | if (mips_opts.ase_mcu == -1) |
15249 | mips_opts.ase_mcu = (arch_info->flags & MIPS_CPU_ASE_MCU) ? 1 : 0; | |
15250 | if (mips_opts.ase_mcu && !ISA_SUPPORTS_MCU_ASE) | |
15251 | as_warn (_("%s ISA does not support MCU ASE"), | |
15252 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
15253 | ||
e9670677 | 15254 | file_mips_isa = mips_opts.isa; |
e9670677 MR |
15255 | file_ase_mips3d = mips_opts.ase_mips3d; |
15256 | file_ase_mdmx = mips_opts.ase_mdmx; | |
e16bfa71 | 15257 | file_ase_smartmips = mips_opts.ase_smartmips; |
74cd071d | 15258 | file_ase_dsp = mips_opts.ase_dsp; |
8b082fb1 | 15259 | file_ase_dspr2 = mips_opts.ase_dspr2; |
ef2e4d86 | 15260 | file_ase_mt = mips_opts.ase_mt; |
e9670677 MR |
15261 | mips_opts.gp32 = file_mips_gp32; |
15262 | mips_opts.fp32 = file_mips_fp32; | |
037b32b9 AN |
15263 | mips_opts.soft_float = file_mips_soft_float; |
15264 | mips_opts.single_float = file_mips_single_float; | |
e9670677 | 15265 | |
ecb4347a DJ |
15266 | if (mips_flag_mdebug < 0) |
15267 | { | |
15268 | #ifdef OBJ_MAYBE_ECOFF | |
15269 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
15270 | mips_flag_mdebug = 1; | |
15271 | else | |
15272 | #endif /* OBJ_MAYBE_ECOFF */ | |
15273 | mips_flag_mdebug = 0; | |
15274 | } | |
e9670677 MR |
15275 | } |
15276 | \f | |
15277 | void | |
17a2f251 | 15278 | mips_init_after_args (void) |
252b5132 RH |
15279 | { |
15280 | /* initialize opcodes */ | |
15281 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 15282 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
15283 | } |
15284 | ||
15285 | long | |
17a2f251 | 15286 | md_pcrel_from (fixS *fixP) |
252b5132 | 15287 | { |
a7ebbfdf TS |
15288 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
15289 | switch (fixP->fx_r_type) | |
15290 | { | |
df58fc94 RS |
15291 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
15292 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
15293 | /* Return the address of the delay slot. */ | |
15294 | return addr + 2; | |
15295 | ||
15296 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
15297 | case BFD_RELOC_MICROMIPS_JMP: | |
a7ebbfdf TS |
15298 | case BFD_RELOC_16_PCREL_S2: |
15299 | case BFD_RELOC_MIPS_JMP: | |
15300 | /* Return the address of the delay slot. */ | |
15301 | return addr + 4; | |
df58fc94 | 15302 | |
a7ebbfdf | 15303 | default: |
58ea3d6a | 15304 | /* We have no relocation type for PC relative MIPS16 instructions. */ |
64817874 TS |
15305 | if (fixP->fx_addsy && S_GET_SEGMENT (fixP->fx_addsy) != now_seg) |
15306 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15307 | _("PC relative MIPS16 instruction references a different section")); | |
a7ebbfdf TS |
15308 | return addr; |
15309 | } | |
252b5132 RH |
15310 | } |
15311 | ||
252b5132 RH |
15312 | /* This is called before the symbol table is processed. In order to |
15313 | work with gcc when using mips-tfile, we must keep all local labels. | |
15314 | However, in other cases, we want to discard them. If we were | |
15315 | called with -g, but we didn't see any debugging information, it may | |
15316 | mean that gcc is smuggling debugging information through to | |
15317 | mips-tfile, in which case we must generate all local labels. */ | |
15318 | ||
15319 | void | |
17a2f251 | 15320 | mips_frob_file_before_adjust (void) |
252b5132 RH |
15321 | { |
15322 | #ifndef NO_ECOFF_DEBUGGING | |
15323 | if (ECOFF_DEBUGGING | |
15324 | && mips_debug != 0 | |
15325 | && ! ecoff_debugging_seen) | |
15326 | flag_keep_locals = 1; | |
15327 | #endif | |
15328 | } | |
15329 | ||
3b91255e | 15330 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 15331 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
15332 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
15333 | relocation operators. | |
15334 | ||
15335 | For our purposes, a %lo() expression matches a %got() or %hi() | |
15336 | expression if: | |
15337 | ||
15338 | (a) it refers to the same symbol; and | |
15339 | (b) the offset applied in the %lo() expression is no lower than | |
15340 | the offset applied in the %got() or %hi(). | |
15341 | ||
15342 | (b) allows us to cope with code like: | |
15343 | ||
15344 | lui $4,%hi(foo) | |
15345 | lh $4,%lo(foo+2)($4) | |
15346 | ||
15347 | ...which is legal on RELA targets, and has a well-defined behaviour | |
15348 | if the user knows that adding 2 to "foo" will not induce a carry to | |
15349 | the high 16 bits. | |
15350 | ||
15351 | When several %lo()s match a particular %got() or %hi(), we use the | |
15352 | following rules to distinguish them: | |
15353 | ||
15354 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
15355 | higher offsets. | |
15356 | ||
15357 | (2) %lo()s with no matching %got() or %hi() are better than those | |
15358 | that already have a matching %got() or %hi(). | |
15359 | ||
15360 | (3) later %lo()s are better than earlier %lo()s. | |
15361 | ||
15362 | These rules are applied in order. | |
15363 | ||
15364 | (1) means, among other things, that %lo()s with identical offsets are | |
15365 | chosen if they exist. | |
15366 | ||
15367 | (2) means that we won't associate several high-part relocations with | |
15368 | the same low-part relocation unless there's no alternative. Having | |
15369 | several high parts for the same low part is a GNU extension; this rule | |
15370 | allows careful users to avoid it. | |
15371 | ||
15372 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
15373 | with the last high-part relocation being at the front of the list. | |
15374 | It therefore makes sense to choose the last matching low-part | |
15375 | relocation, all other things being equal. It's also easier | |
15376 | to code that way. */ | |
252b5132 RH |
15377 | |
15378 | void | |
17a2f251 | 15379 | mips_frob_file (void) |
252b5132 RH |
15380 | { |
15381 | struct mips_hi_fixup *l; | |
35903be0 | 15382 | bfd_reloc_code_real_type looking_for_rtype = BFD_RELOC_UNUSED; |
252b5132 RH |
15383 | |
15384 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
15385 | { | |
15386 | segment_info_type *seginfo; | |
3b91255e RS |
15387 | bfd_boolean matched_lo_p; |
15388 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 15389 | |
9c2799c2 | 15390 | gas_assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 15391 | |
5919d012 | 15392 | /* If a GOT16 relocation turns out to be against a global symbol, |
b886a2ab RS |
15393 | there isn't supposed to be a matching LO. Ignore %gots against |
15394 | constants; we'll report an error for those later. */ | |
738e5348 | 15395 | if (got16_reloc_p (l->fixp->fx_r_type) |
b886a2ab RS |
15396 | && !(l->fixp->fx_addsy |
15397 | && pic_need_relax (l->fixp->fx_addsy, l->seg))) | |
5919d012 RS |
15398 | continue; |
15399 | ||
15400 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
15401 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
15402 | continue; |
15403 | ||
252b5132 | 15404 | seginfo = seg_info (l->seg); |
252b5132 | 15405 | |
3b91255e RS |
15406 | /* Set HI_POS to the position of this relocation in the chain. |
15407 | Set LO_POS to the position of the chosen low-part relocation. | |
15408 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
15409 | relocation that matches an immediately-preceding high-part | |
15410 | relocation. */ | |
15411 | hi_pos = NULL; | |
15412 | lo_pos = NULL; | |
15413 | matched_lo_p = FALSE; | |
738e5348 | 15414 | looking_for_rtype = matching_lo_reloc (l->fixp->fx_r_type); |
35903be0 | 15415 | |
3b91255e RS |
15416 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) |
15417 | { | |
15418 | if (*pos == l->fixp) | |
15419 | hi_pos = pos; | |
15420 | ||
35903be0 | 15421 | if ((*pos)->fx_r_type == looking_for_rtype |
30cfc97a | 15422 | && symbol_same_p ((*pos)->fx_addsy, l->fixp->fx_addsy) |
3b91255e RS |
15423 | && (*pos)->fx_offset >= l->fixp->fx_offset |
15424 | && (lo_pos == NULL | |
15425 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
15426 | || (!matched_lo_p | |
15427 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
15428 | lo_pos = pos; | |
15429 | ||
15430 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
15431 | && fixup_has_matching_lo_p (*pos)); | |
15432 | } | |
15433 | ||
15434 | /* If we found a match, remove the high-part relocation from its | |
15435 | current position and insert it before the low-part relocation. | |
15436 | Make the offsets match so that fixup_has_matching_lo_p() | |
15437 | will return true. | |
15438 | ||
15439 | We don't warn about unmatched high-part relocations since some | |
15440 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
15441 | instructions. */ | |
15442 | if (lo_pos != NULL) | |
15443 | { | |
15444 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
15445 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 15446 | { |
3b91255e RS |
15447 | *hi_pos = l->fixp->fx_next; |
15448 | l->fixp->fx_next = *lo_pos; | |
15449 | *lo_pos = l->fixp; | |
252b5132 | 15450 | } |
252b5132 RH |
15451 | } |
15452 | } | |
15453 | } | |
15454 | ||
252b5132 | 15455 | int |
17a2f251 | 15456 | mips_force_relocation (fixS *fixp) |
252b5132 | 15457 | { |
ae6063d4 | 15458 | if (generic_force_reloc (fixp)) |
252b5132 RH |
15459 | return 1; |
15460 | ||
df58fc94 RS |
15461 | /* We want to keep BFD_RELOC_MICROMIPS_*_PCREL_S1 relocation, |
15462 | so that the linker relaxation can update targets. */ | |
15463 | if (fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
15464 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
15465 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1) | |
15466 | return 1; | |
15467 | ||
3e722fb5 | 15468 | return 0; |
252b5132 RH |
15469 | } |
15470 | ||
b886a2ab RS |
15471 | /* Read the instruction associated with RELOC from BUF. */ |
15472 | ||
15473 | static unsigned int | |
15474 | read_reloc_insn (char *buf, bfd_reloc_code_real_type reloc) | |
15475 | { | |
15476 | if (mips16_reloc_p (reloc) || micromips_reloc_p (reloc)) | |
15477 | return read_compressed_insn (buf, 4); | |
15478 | else | |
15479 | return read_insn (buf); | |
15480 | } | |
15481 | ||
15482 | /* Write instruction INSN to BUF, given that it has been relocated | |
15483 | by RELOC. */ | |
15484 | ||
15485 | static void | |
15486 | write_reloc_insn (char *buf, bfd_reloc_code_real_type reloc, | |
15487 | unsigned long insn) | |
15488 | { | |
15489 | if (mips16_reloc_p (reloc) || micromips_reloc_p (reloc)) | |
15490 | write_compressed_insn (buf, insn, 4); | |
15491 | else | |
15492 | write_insn (buf, insn); | |
15493 | } | |
15494 | ||
252b5132 RH |
15495 | /* Apply a fixup to the object file. */ |
15496 | ||
94f592af | 15497 | void |
55cf6793 | 15498 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 15499 | { |
4d68580a | 15500 | char *buf; |
b886a2ab | 15501 | unsigned long insn; |
a7ebbfdf | 15502 | reloc_howto_type *howto; |
252b5132 | 15503 | |
a7ebbfdf TS |
15504 | /* We ignore generic BFD relocations we don't know about. */ |
15505 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
15506 | if (! howto) | |
15507 | return; | |
65551fa4 | 15508 | |
df58fc94 RS |
15509 | gas_assert (fixP->fx_size == 2 |
15510 | || fixP->fx_size == 4 | |
90ecf173 MR |
15511 | || fixP->fx_r_type == BFD_RELOC_16 |
15512 | || fixP->fx_r_type == BFD_RELOC_64 | |
15513 | || fixP->fx_r_type == BFD_RELOC_CTOR | |
15514 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
df58fc94 | 15515 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_SUB |
90ecf173 MR |
15516 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
15517 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY | |
15518 | || fixP->fx_r_type == BFD_RELOC_MIPS_TLS_DTPREL64); | |
252b5132 | 15519 | |
4d68580a | 15520 | buf = fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 | 15521 | |
df58fc94 RS |
15522 | gas_assert (!fixP->fx_pcrel || fixP->fx_r_type == BFD_RELOC_16_PCREL_S2 |
15523 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
15524 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
15525 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
b1dca8ee RS |
15526 | |
15527 | /* Don't treat parts of a composite relocation as done. There are two | |
15528 | reasons for this: | |
15529 | ||
15530 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
15531 | should nevertheless be emitted if the first part is. | |
15532 | ||
15533 | (2) In normal usage, composite relocations are never assembly-time | |
15534 | constants. The easiest way of dealing with the pathological | |
15535 | exceptions is to generate a relocation against STN_UNDEF and | |
15536 | leave everything up to the linker. */ | |
3994f87e | 15537 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
15538 | fixP->fx_done = 1; |
15539 | ||
15540 | switch (fixP->fx_r_type) | |
15541 | { | |
3f98094e DJ |
15542 | case BFD_RELOC_MIPS_TLS_GD: |
15543 | case BFD_RELOC_MIPS_TLS_LDM: | |
741d6ea8 JM |
15544 | case BFD_RELOC_MIPS_TLS_DTPREL32: |
15545 | case BFD_RELOC_MIPS_TLS_DTPREL64: | |
3f98094e DJ |
15546 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: |
15547 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
15548 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
d0f13682 CLT |
15549 | case BFD_RELOC_MIPS_TLS_TPREL32: |
15550 | case BFD_RELOC_MIPS_TLS_TPREL64: | |
3f98094e DJ |
15551 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: |
15552 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
df58fc94 RS |
15553 | case BFD_RELOC_MICROMIPS_TLS_GD: |
15554 | case BFD_RELOC_MICROMIPS_TLS_LDM: | |
15555 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16: | |
15556 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16: | |
15557 | case BFD_RELOC_MICROMIPS_TLS_GOTTPREL: | |
15558 | case BFD_RELOC_MICROMIPS_TLS_TPREL_HI16: | |
15559 | case BFD_RELOC_MICROMIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
15560 | case BFD_RELOC_MIPS16_TLS_GD: |
15561 | case BFD_RELOC_MIPS16_TLS_LDM: | |
15562 | case BFD_RELOC_MIPS16_TLS_DTPREL_HI16: | |
15563 | case BFD_RELOC_MIPS16_TLS_DTPREL_LO16: | |
15564 | case BFD_RELOC_MIPS16_TLS_GOTTPREL: | |
15565 | case BFD_RELOC_MIPS16_TLS_TPREL_HI16: | |
15566 | case BFD_RELOC_MIPS16_TLS_TPREL_LO16: | |
b886a2ab RS |
15567 | if (!fixP->fx_addsy) |
15568 | { | |
15569 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15570 | _("TLS relocation against a constant")); | |
15571 | break; | |
15572 | } | |
3f98094e DJ |
15573 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
15574 | /* fall through */ | |
15575 | ||
252b5132 | 15576 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
15577 | case BFD_RELOC_MIPS_SHIFT5: |
15578 | case BFD_RELOC_MIPS_SHIFT6: | |
15579 | case BFD_RELOC_MIPS_GOT_DISP: | |
15580 | case BFD_RELOC_MIPS_GOT_PAGE: | |
15581 | case BFD_RELOC_MIPS_GOT_OFST: | |
15582 | case BFD_RELOC_MIPS_SUB: | |
15583 | case BFD_RELOC_MIPS_INSERT_A: | |
15584 | case BFD_RELOC_MIPS_INSERT_B: | |
15585 | case BFD_RELOC_MIPS_DELETE: | |
15586 | case BFD_RELOC_MIPS_HIGHEST: | |
15587 | case BFD_RELOC_MIPS_HIGHER: | |
15588 | case BFD_RELOC_MIPS_SCN_DISP: | |
15589 | case BFD_RELOC_MIPS_REL16: | |
15590 | case BFD_RELOC_MIPS_RELGOT: | |
15591 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
15592 | case BFD_RELOC_HI16: |
15593 | case BFD_RELOC_HI16_S: | |
b886a2ab | 15594 | case BFD_RELOC_LO16: |
cdf6fd85 | 15595 | case BFD_RELOC_GPREL16: |
252b5132 RH |
15596 | case BFD_RELOC_MIPS_LITERAL: |
15597 | case BFD_RELOC_MIPS_CALL16: | |
15598 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 15599 | case BFD_RELOC_GPREL32: |
252b5132 RH |
15600 | case BFD_RELOC_MIPS_GOT_HI16: |
15601 | case BFD_RELOC_MIPS_GOT_LO16: | |
15602 | case BFD_RELOC_MIPS_CALL_HI16: | |
15603 | case BFD_RELOC_MIPS_CALL_LO16: | |
15604 | case BFD_RELOC_MIPS16_GPREL: | |
738e5348 RS |
15605 | case BFD_RELOC_MIPS16_GOT16: |
15606 | case BFD_RELOC_MIPS16_CALL16: | |
d6f16593 MR |
15607 | case BFD_RELOC_MIPS16_HI16: |
15608 | case BFD_RELOC_MIPS16_HI16_S: | |
b886a2ab | 15609 | case BFD_RELOC_MIPS16_LO16: |
252b5132 | 15610 | case BFD_RELOC_MIPS16_JMP: |
df58fc94 RS |
15611 | case BFD_RELOC_MICROMIPS_JMP: |
15612 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
15613 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
15614 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
15615 | case BFD_RELOC_MICROMIPS_SUB: | |
15616 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
15617 | case BFD_RELOC_MICROMIPS_HIGHER: | |
15618 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
15619 | case BFD_RELOC_MICROMIPS_JALR: | |
15620 | case BFD_RELOC_MICROMIPS_HI16: | |
15621 | case BFD_RELOC_MICROMIPS_HI16_S: | |
b886a2ab | 15622 | case BFD_RELOC_MICROMIPS_LO16: |
df58fc94 RS |
15623 | case BFD_RELOC_MICROMIPS_GPREL16: |
15624 | case BFD_RELOC_MICROMIPS_LITERAL: | |
15625 | case BFD_RELOC_MICROMIPS_CALL16: | |
15626 | case BFD_RELOC_MICROMIPS_GOT16: | |
15627 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
15628 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
15629 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
15630 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
b886a2ab RS |
15631 | if (fixP->fx_done) |
15632 | { | |
15633 | offsetT value; | |
15634 | ||
15635 | if (calculate_reloc (fixP->fx_r_type, *valP, &value)) | |
15636 | { | |
15637 | insn = read_reloc_insn (buf, fixP->fx_r_type); | |
15638 | if (mips16_reloc_p (fixP->fx_r_type)) | |
15639 | insn |= mips16_immed_extend (value, 16); | |
15640 | else | |
15641 | insn |= (value & 0xffff); | |
15642 | write_reloc_insn (buf, fixP->fx_r_type, insn); | |
15643 | } | |
15644 | else | |
15645 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15646 | _("Unsupported constant in relocation")); | |
15647 | } | |
252b5132 RH |
15648 | break; |
15649 | ||
252b5132 RH |
15650 | case BFD_RELOC_64: |
15651 | /* This is handled like BFD_RELOC_32, but we output a sign | |
15652 | extended value if we are only 32 bits. */ | |
3e722fb5 | 15653 | if (fixP->fx_done) |
252b5132 RH |
15654 | { |
15655 | if (8 <= sizeof (valueT)) | |
4d68580a | 15656 | md_number_to_chars (buf, *valP, 8); |
252b5132 RH |
15657 | else |
15658 | { | |
a7ebbfdf | 15659 | valueT hiv; |
252b5132 | 15660 | |
a7ebbfdf | 15661 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
15662 | hiv = 0xffffffff; |
15663 | else | |
15664 | hiv = 0; | |
4d68580a RS |
15665 | md_number_to_chars (buf + (target_big_endian ? 4 : 0), *valP, 4); |
15666 | md_number_to_chars (buf + (target_big_endian ? 0 : 4), hiv, 4); | |
252b5132 RH |
15667 | } |
15668 | } | |
15669 | break; | |
15670 | ||
056350c6 | 15671 | case BFD_RELOC_RVA: |
252b5132 | 15672 | case BFD_RELOC_32: |
252b5132 RH |
15673 | case BFD_RELOC_16: |
15674 | /* If we are deleting this reloc entry, we must fill in the | |
54f4ddb3 TS |
15675 | value now. This can happen if we have a .word which is not |
15676 | resolved when it appears but is later defined. */ | |
252b5132 | 15677 | if (fixP->fx_done) |
4d68580a | 15678 | md_number_to_chars (buf, *valP, fixP->fx_size); |
252b5132 RH |
15679 | break; |
15680 | ||
252b5132 | 15681 | case BFD_RELOC_16_PCREL_S2: |
a7ebbfdf | 15682 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 15683 | as_bad_where (fixP->fx_file, fixP->fx_line, |
bad36eac | 15684 | _("Branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 15685 | |
54f4ddb3 TS |
15686 | /* We need to save the bits in the instruction since fixup_segment() |
15687 | might be deleting the relocation entry (i.e., a branch within | |
15688 | the current segment). */ | |
a7ebbfdf | 15689 | if (! fixP->fx_done) |
bb2d6cd7 | 15690 | break; |
252b5132 | 15691 | |
54f4ddb3 | 15692 | /* Update old instruction data. */ |
4d68580a | 15693 | insn = read_insn (buf); |
252b5132 | 15694 | |
a7ebbfdf TS |
15695 | if (*valP + 0x20000 <= 0x3ffff) |
15696 | { | |
15697 | insn |= (*valP >> 2) & 0xffff; | |
4d68580a | 15698 | write_insn (buf, insn); |
a7ebbfdf TS |
15699 | } |
15700 | else if (mips_pic == NO_PIC | |
15701 | && fixP->fx_done | |
15702 | && fixP->fx_frag->fr_address >= text_section->vma | |
15703 | && (fixP->fx_frag->fr_address | |
587aac4e | 15704 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
15705 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
15706 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
15707 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
15708 | { |
15709 | /* The branch offset is too large. If this is an | |
15710 | unconditional branch, and we are not generating PIC code, | |
15711 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
15712 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
15713 | insn = 0x0c000000; /* jal */ | |
252b5132 | 15714 | else |
a7ebbfdf TS |
15715 | insn = 0x08000000; /* j */ |
15716 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
15717 | fixP->fx_done = 0; | |
15718 | fixP->fx_addsy = section_symbol (text_section); | |
15719 | *valP += md_pcrel_from (fixP); | |
4d68580a | 15720 | write_insn (buf, insn); |
a7ebbfdf TS |
15721 | } |
15722 | else | |
15723 | { | |
15724 | /* If we got here, we have branch-relaxation disabled, | |
15725 | and there's nothing we can do to fix this instruction | |
15726 | without turning it into a longer sequence. */ | |
15727 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15728 | _("Branch out of range")); | |
252b5132 | 15729 | } |
252b5132 RH |
15730 | break; |
15731 | ||
df58fc94 RS |
15732 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
15733 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
15734 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
15735 | /* We adjust the offset back to even. */ | |
15736 | if ((*valP & 0x1) != 0) | |
15737 | --(*valP); | |
15738 | ||
15739 | if (! fixP->fx_done) | |
15740 | break; | |
15741 | ||
15742 | /* Should never visit here, because we keep the relocation. */ | |
15743 | abort (); | |
15744 | break; | |
15745 | ||
252b5132 RH |
15746 | case BFD_RELOC_VTABLE_INHERIT: |
15747 | fixP->fx_done = 0; | |
15748 | if (fixP->fx_addsy | |
15749 | && !S_IS_DEFINED (fixP->fx_addsy) | |
15750 | && !S_IS_WEAK (fixP->fx_addsy)) | |
15751 | S_SET_WEAK (fixP->fx_addsy); | |
15752 | break; | |
15753 | ||
15754 | case BFD_RELOC_VTABLE_ENTRY: | |
15755 | fixP->fx_done = 0; | |
15756 | break; | |
15757 | ||
15758 | default: | |
15759 | internalError (); | |
15760 | } | |
a7ebbfdf TS |
15761 | |
15762 | /* Remember value for tc_gen_reloc. */ | |
15763 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
15764 | } |
15765 | ||
252b5132 | 15766 | static symbolS * |
17a2f251 | 15767 | get_symbol (void) |
252b5132 RH |
15768 | { |
15769 | int c; | |
15770 | char *name; | |
15771 | symbolS *p; | |
15772 | ||
15773 | name = input_line_pointer; | |
15774 | c = get_symbol_end (); | |
15775 | p = (symbolS *) symbol_find_or_make (name); | |
15776 | *input_line_pointer = c; | |
15777 | return p; | |
15778 | } | |
15779 | ||
742a56fe RS |
15780 | /* Align the current frag to a given power of two. If a particular |
15781 | fill byte should be used, FILL points to an integer that contains | |
15782 | that byte, otherwise FILL is null. | |
15783 | ||
462427c4 RS |
15784 | This function used to have the comment: |
15785 | ||
15786 | The MIPS assembler also automatically adjusts any preceding label. | |
15787 | ||
15788 | The implementation therefore applied the adjustment to a maximum of | |
15789 | one label. However, other label adjustments are applied to batches | |
15790 | of labels, and adjusting just one caused problems when new labels | |
15791 | were added for the sake of debugging or unwind information. | |
15792 | We therefore adjust all preceding labels (given as LABELS) instead. */ | |
252b5132 RH |
15793 | |
15794 | static void | |
462427c4 | 15795 | mips_align (int to, int *fill, struct insn_label_list *labels) |
252b5132 | 15796 | { |
7d10b47d | 15797 | mips_emit_delays (); |
df58fc94 | 15798 | mips_record_compressed_mode (); |
742a56fe RS |
15799 | if (fill == NULL && subseg_text_p (now_seg)) |
15800 | frag_align_code (to, 0); | |
15801 | else | |
15802 | frag_align (to, fill ? *fill : 0, 0); | |
252b5132 | 15803 | record_alignment (now_seg, to); |
462427c4 | 15804 | mips_move_labels (labels, FALSE); |
252b5132 RH |
15805 | } |
15806 | ||
15807 | /* Align to a given power of two. .align 0 turns off the automatic | |
15808 | alignment used by the data creating pseudo-ops. */ | |
15809 | ||
15810 | static void | |
17a2f251 | 15811 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 15812 | { |
742a56fe | 15813 | int temp, fill_value, *fill_ptr; |
49954fb4 | 15814 | long max_alignment = 28; |
252b5132 | 15815 | |
54f4ddb3 | 15816 | /* o Note that the assembler pulls down any immediately preceding label |
252b5132 | 15817 | to the aligned address. |
54f4ddb3 | 15818 | o It's not documented but auto alignment is reinstated by |
252b5132 | 15819 | a .align pseudo instruction. |
54f4ddb3 | 15820 | o Note also that after auto alignment is turned off the mips assembler |
252b5132 | 15821 | issues an error on attempt to assemble an improperly aligned data item. |
54f4ddb3 | 15822 | We don't. */ |
252b5132 RH |
15823 | |
15824 | temp = get_absolute_expression (); | |
15825 | if (temp > max_alignment) | |
15826 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
15827 | else if (temp < 0) | |
15828 | { | |
15829 | as_warn (_("Alignment negative: 0 assumed.")); | |
15830 | temp = 0; | |
15831 | } | |
15832 | if (*input_line_pointer == ',') | |
15833 | { | |
f9419b05 | 15834 | ++input_line_pointer; |
742a56fe RS |
15835 | fill_value = get_absolute_expression (); |
15836 | fill_ptr = &fill_value; | |
252b5132 RH |
15837 | } |
15838 | else | |
742a56fe | 15839 | fill_ptr = 0; |
252b5132 RH |
15840 | if (temp) |
15841 | { | |
a8dbcb85 TS |
15842 | segment_info_type *si = seg_info (now_seg); |
15843 | struct insn_label_list *l = si->label_list; | |
54f4ddb3 | 15844 | /* Auto alignment should be switched on by next section change. */ |
252b5132 | 15845 | auto_align = 1; |
462427c4 | 15846 | mips_align (temp, fill_ptr, l); |
252b5132 RH |
15847 | } |
15848 | else | |
15849 | { | |
15850 | auto_align = 0; | |
15851 | } | |
15852 | ||
15853 | demand_empty_rest_of_line (); | |
15854 | } | |
15855 | ||
252b5132 | 15856 | static void |
17a2f251 | 15857 | s_change_sec (int sec) |
252b5132 RH |
15858 | { |
15859 | segT seg; | |
15860 | ||
252b5132 RH |
15861 | #ifdef OBJ_ELF |
15862 | /* The ELF backend needs to know that we are changing sections, so | |
15863 | that .previous works correctly. We could do something like check | |
b6ff326e | 15864 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
15865 | as it would not be appropriate to use it in the section changing |
15866 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
15867 | This should be cleaner, somehow. */ | |
f43abd2b TS |
15868 | if (IS_ELF) |
15869 | obj_elf_section_change_hook (); | |
252b5132 RH |
15870 | #endif |
15871 | ||
7d10b47d | 15872 | mips_emit_delays (); |
6a32d874 | 15873 | |
252b5132 RH |
15874 | switch (sec) |
15875 | { | |
15876 | case 't': | |
15877 | s_text (0); | |
15878 | break; | |
15879 | case 'd': | |
15880 | s_data (0); | |
15881 | break; | |
15882 | case 'b': | |
15883 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
15884 | demand_empty_rest_of_line (); | |
15885 | break; | |
15886 | ||
15887 | case 'r': | |
4d0d148d TS |
15888 | seg = subseg_new (RDATA_SECTION_NAME, |
15889 | (subsegT) get_absolute_expression ()); | |
f43abd2b | 15890 | if (IS_ELF) |
252b5132 | 15891 | { |
4d0d148d TS |
15892 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
15893 | | SEC_READONLY | SEC_RELOC | |
15894 | | SEC_DATA)); | |
c41e87e3 | 15895 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 15896 | record_alignment (seg, 4); |
252b5132 | 15897 | } |
4d0d148d | 15898 | demand_empty_rest_of_line (); |
252b5132 RH |
15899 | break; |
15900 | ||
15901 | case 's': | |
4d0d148d | 15902 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
f43abd2b | 15903 | if (IS_ELF) |
252b5132 | 15904 | { |
4d0d148d TS |
15905 | bfd_set_section_flags (stdoutput, seg, |
15906 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
c41e87e3 | 15907 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 15908 | record_alignment (seg, 4); |
252b5132 | 15909 | } |
4d0d148d TS |
15910 | demand_empty_rest_of_line (); |
15911 | break; | |
998b3c36 MR |
15912 | |
15913 | case 'B': | |
15914 | seg = subseg_new (".sbss", (subsegT) get_absolute_expression ()); | |
15915 | if (IS_ELF) | |
15916 | { | |
15917 | bfd_set_section_flags (stdoutput, seg, SEC_ALLOC); | |
15918 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
15919 | record_alignment (seg, 4); | |
15920 | } | |
15921 | demand_empty_rest_of_line (); | |
15922 | break; | |
252b5132 RH |
15923 | } |
15924 | ||
15925 | auto_align = 1; | |
15926 | } | |
b34976b6 | 15927 | |
cca86cc8 | 15928 | void |
17a2f251 | 15929 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 15930 | { |
7ed4a06a | 15931 | #ifdef OBJ_ELF |
cca86cc8 SC |
15932 | char *section_name; |
15933 | char c; | |
684022ea | 15934 | char next_c = 0; |
cca86cc8 SC |
15935 | int section_type; |
15936 | int section_flag; | |
15937 | int section_entry_size; | |
15938 | int section_alignment; | |
b34976b6 | 15939 | |
f43abd2b | 15940 | if (!IS_ELF) |
7ed4a06a TS |
15941 | return; |
15942 | ||
cca86cc8 SC |
15943 | section_name = input_line_pointer; |
15944 | c = get_symbol_end (); | |
a816d1ed AO |
15945 | if (c) |
15946 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 15947 | |
4cf0dd0d TS |
15948 | /* Do we have .section Name<,"flags">? */ |
15949 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 15950 | { |
4cf0dd0d TS |
15951 | /* just after name is now '\0'. */ |
15952 | *input_line_pointer = c; | |
cca86cc8 SC |
15953 | input_line_pointer = section_name; |
15954 | obj_elf_section (ignore); | |
15955 | return; | |
15956 | } | |
15957 | input_line_pointer++; | |
15958 | ||
15959 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
15960 | if (c == ',') | |
15961 | section_type = get_absolute_expression (); | |
15962 | else | |
15963 | section_type = 0; | |
15964 | if (*input_line_pointer++ == ',') | |
15965 | section_flag = get_absolute_expression (); | |
15966 | else | |
15967 | section_flag = 0; | |
15968 | if (*input_line_pointer++ == ',') | |
15969 | section_entry_size = get_absolute_expression (); | |
15970 | else | |
15971 | section_entry_size = 0; | |
15972 | if (*input_line_pointer++ == ',') | |
15973 | section_alignment = get_absolute_expression (); | |
15974 | else | |
15975 | section_alignment = 0; | |
87975d2a AM |
15976 | /* FIXME: really ignore? */ |
15977 | (void) section_alignment; | |
cca86cc8 | 15978 | |
a816d1ed AO |
15979 | section_name = xstrdup (section_name); |
15980 | ||
8ab8a5c8 RS |
15981 | /* When using the generic form of .section (as implemented by obj-elf.c), |
15982 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
15983 | traditionally had to fall back on the more common @progbits instead. | |
15984 | ||
15985 | There's nothing really harmful in this, since bfd will correct | |
15986 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 15987 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
15988 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
15989 | ||
15990 | Even so, we shouldn't force users of the MIPS .section syntax to | |
15991 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
15992 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
15993 | generic type-checking code. */ | |
15994 | if (section_type == SHT_MIPS_DWARF) | |
15995 | section_type = SHT_PROGBITS; | |
15996 | ||
cca86cc8 SC |
15997 | obj_elf_change_section (section_name, section_type, section_flag, |
15998 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
15999 | |
16000 | if (now_seg->name != section_name) | |
16001 | free (section_name); | |
7ed4a06a | 16002 | #endif /* OBJ_ELF */ |
cca86cc8 | 16003 | } |
252b5132 RH |
16004 | |
16005 | void | |
17a2f251 | 16006 | mips_enable_auto_align (void) |
252b5132 RH |
16007 | { |
16008 | auto_align = 1; | |
16009 | } | |
16010 | ||
16011 | static void | |
17a2f251 | 16012 | s_cons (int log_size) |
252b5132 | 16013 | { |
a8dbcb85 TS |
16014 | segment_info_type *si = seg_info (now_seg); |
16015 | struct insn_label_list *l = si->label_list; | |
252b5132 | 16016 | |
7d10b47d | 16017 | mips_emit_delays (); |
252b5132 | 16018 | if (log_size > 0 && auto_align) |
462427c4 | 16019 | mips_align (log_size, 0, l); |
252b5132 | 16020 | cons (1 << log_size); |
a1facbec | 16021 | mips_clear_insn_labels (); |
252b5132 RH |
16022 | } |
16023 | ||
16024 | static void | |
17a2f251 | 16025 | s_float_cons (int type) |
252b5132 | 16026 | { |
a8dbcb85 TS |
16027 | segment_info_type *si = seg_info (now_seg); |
16028 | struct insn_label_list *l = si->label_list; | |
252b5132 | 16029 | |
7d10b47d | 16030 | mips_emit_delays (); |
252b5132 RH |
16031 | |
16032 | if (auto_align) | |
49309057 ILT |
16033 | { |
16034 | if (type == 'd') | |
462427c4 | 16035 | mips_align (3, 0, l); |
49309057 | 16036 | else |
462427c4 | 16037 | mips_align (2, 0, l); |
49309057 | 16038 | } |
252b5132 | 16039 | |
252b5132 | 16040 | float_cons (type); |
a1facbec | 16041 | mips_clear_insn_labels (); |
252b5132 RH |
16042 | } |
16043 | ||
16044 | /* Handle .globl. We need to override it because on Irix 5 you are | |
16045 | permitted to say | |
16046 | .globl foo .text | |
16047 | where foo is an undefined symbol, to mean that foo should be | |
16048 | considered to be the address of a function. */ | |
16049 | ||
16050 | static void | |
17a2f251 | 16051 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
16052 | { |
16053 | char *name; | |
16054 | int c; | |
16055 | symbolS *symbolP; | |
16056 | flagword flag; | |
16057 | ||
8a06b769 | 16058 | do |
252b5132 | 16059 | { |
8a06b769 | 16060 | name = input_line_pointer; |
252b5132 | 16061 | c = get_symbol_end (); |
8a06b769 TS |
16062 | symbolP = symbol_find_or_make (name); |
16063 | S_SET_EXTERNAL (symbolP); | |
16064 | ||
252b5132 | 16065 | *input_line_pointer = c; |
8a06b769 | 16066 | SKIP_WHITESPACE (); |
252b5132 | 16067 | |
8a06b769 TS |
16068 | /* On Irix 5, every global symbol that is not explicitly labelled as |
16069 | being a function is apparently labelled as being an object. */ | |
16070 | flag = BSF_OBJECT; | |
252b5132 | 16071 | |
8a06b769 TS |
16072 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
16073 | && (*input_line_pointer != ',')) | |
16074 | { | |
16075 | char *secname; | |
16076 | asection *sec; | |
16077 | ||
16078 | secname = input_line_pointer; | |
16079 | c = get_symbol_end (); | |
16080 | sec = bfd_get_section_by_name (stdoutput, secname); | |
16081 | if (sec == NULL) | |
16082 | as_bad (_("%s: no such section"), secname); | |
16083 | *input_line_pointer = c; | |
16084 | ||
16085 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
16086 | flag = BSF_FUNCTION; | |
16087 | } | |
16088 | ||
16089 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
16090 | ||
16091 | c = *input_line_pointer; | |
16092 | if (c == ',') | |
16093 | { | |
16094 | input_line_pointer++; | |
16095 | SKIP_WHITESPACE (); | |
16096 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
16097 | c = '\n'; | |
16098 | } | |
16099 | } | |
16100 | while (c == ','); | |
252b5132 | 16101 | |
252b5132 RH |
16102 | demand_empty_rest_of_line (); |
16103 | } | |
16104 | ||
16105 | static void | |
17a2f251 | 16106 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
16107 | { |
16108 | char *opt; | |
16109 | char c; | |
16110 | ||
16111 | opt = input_line_pointer; | |
16112 | c = get_symbol_end (); | |
16113 | ||
16114 | if (*opt == 'O') | |
16115 | { | |
16116 | /* FIXME: What does this mean? */ | |
16117 | } | |
16118 | else if (strncmp (opt, "pic", 3) == 0) | |
16119 | { | |
16120 | int i; | |
16121 | ||
16122 | i = atoi (opt + 3); | |
16123 | if (i == 0) | |
16124 | mips_pic = NO_PIC; | |
16125 | else if (i == 2) | |
143d77c5 | 16126 | { |
8b828383 | 16127 | mips_pic = SVR4_PIC; |
143d77c5 EC |
16128 | mips_abicalls = TRUE; |
16129 | } | |
252b5132 RH |
16130 | else |
16131 | as_bad (_(".option pic%d not supported"), i); | |
16132 | ||
4d0d148d | 16133 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
16134 | { |
16135 | if (g_switch_seen && g_switch_value != 0) | |
16136 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
16137 | g_switch_value = 0; | |
16138 | bfd_set_gp_size (stdoutput, 0); | |
16139 | } | |
16140 | } | |
16141 | else | |
16142 | as_warn (_("Unrecognized option \"%s\""), opt); | |
16143 | ||
16144 | *input_line_pointer = c; | |
16145 | demand_empty_rest_of_line (); | |
16146 | } | |
16147 | ||
16148 | /* This structure is used to hold a stack of .set values. */ | |
16149 | ||
e972090a NC |
16150 | struct mips_option_stack |
16151 | { | |
252b5132 RH |
16152 | struct mips_option_stack *next; |
16153 | struct mips_set_options options; | |
16154 | }; | |
16155 | ||
16156 | static struct mips_option_stack *mips_opts_stack; | |
16157 | ||
16158 | /* Handle the .set pseudo-op. */ | |
16159 | ||
16160 | static void | |
17a2f251 | 16161 | s_mipsset (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
16162 | { |
16163 | char *name = input_line_pointer, ch; | |
16164 | ||
16165 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 16166 | ++input_line_pointer; |
252b5132 RH |
16167 | ch = *input_line_pointer; |
16168 | *input_line_pointer = '\0'; | |
16169 | ||
16170 | if (strcmp (name, "reorder") == 0) | |
16171 | { | |
7d10b47d RS |
16172 | if (mips_opts.noreorder) |
16173 | end_noreorder (); | |
252b5132 RH |
16174 | } |
16175 | else if (strcmp (name, "noreorder") == 0) | |
16176 | { | |
7d10b47d RS |
16177 | if (!mips_opts.noreorder) |
16178 | start_noreorder (); | |
252b5132 | 16179 | } |
741fe287 MR |
16180 | else if (strncmp (name, "at=", 3) == 0) |
16181 | { | |
16182 | char *s = name + 3; | |
16183 | ||
16184 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, &mips_opts.at)) | |
16185 | as_bad (_("Unrecognized register name `%s'"), s); | |
16186 | } | |
252b5132 RH |
16187 | else if (strcmp (name, "at") == 0) |
16188 | { | |
741fe287 | 16189 | mips_opts.at = ATREG; |
252b5132 RH |
16190 | } |
16191 | else if (strcmp (name, "noat") == 0) | |
16192 | { | |
741fe287 | 16193 | mips_opts.at = ZERO; |
252b5132 RH |
16194 | } |
16195 | else if (strcmp (name, "macro") == 0) | |
16196 | { | |
16197 | mips_opts.warn_about_macros = 0; | |
16198 | } | |
16199 | else if (strcmp (name, "nomacro") == 0) | |
16200 | { | |
16201 | if (mips_opts.noreorder == 0) | |
16202 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
16203 | mips_opts.warn_about_macros = 1; | |
16204 | } | |
16205 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
16206 | { | |
16207 | mips_opts.nomove = 0; | |
16208 | } | |
16209 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
16210 | { | |
16211 | mips_opts.nomove = 1; | |
16212 | } | |
16213 | else if (strcmp (name, "bopt") == 0) | |
16214 | { | |
16215 | mips_opts.nobopt = 0; | |
16216 | } | |
16217 | else if (strcmp (name, "nobopt") == 0) | |
16218 | { | |
16219 | mips_opts.nobopt = 1; | |
16220 | } | |
ad3fea08 TS |
16221 | else if (strcmp (name, "gp=default") == 0) |
16222 | mips_opts.gp32 = file_mips_gp32; | |
16223 | else if (strcmp (name, "gp=32") == 0) | |
16224 | mips_opts.gp32 = 1; | |
16225 | else if (strcmp (name, "gp=64") == 0) | |
16226 | { | |
16227 | if (!ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
20203fb9 | 16228 | as_warn (_("%s isa does not support 64-bit registers"), |
ad3fea08 TS |
16229 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16230 | mips_opts.gp32 = 0; | |
16231 | } | |
16232 | else if (strcmp (name, "fp=default") == 0) | |
16233 | mips_opts.fp32 = file_mips_fp32; | |
16234 | else if (strcmp (name, "fp=32") == 0) | |
16235 | mips_opts.fp32 = 1; | |
16236 | else if (strcmp (name, "fp=64") == 0) | |
16237 | { | |
16238 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
20203fb9 | 16239 | as_warn (_("%s isa does not support 64-bit floating point registers"), |
ad3fea08 TS |
16240 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16241 | mips_opts.fp32 = 0; | |
16242 | } | |
037b32b9 AN |
16243 | else if (strcmp (name, "softfloat") == 0) |
16244 | mips_opts.soft_float = 1; | |
16245 | else if (strcmp (name, "hardfloat") == 0) | |
16246 | mips_opts.soft_float = 0; | |
16247 | else if (strcmp (name, "singlefloat") == 0) | |
16248 | mips_opts.single_float = 1; | |
16249 | else if (strcmp (name, "doublefloat") == 0) | |
16250 | mips_opts.single_float = 0; | |
252b5132 RH |
16251 | else if (strcmp (name, "mips16") == 0 |
16252 | || strcmp (name, "MIPS-16") == 0) | |
df58fc94 RS |
16253 | { |
16254 | if (mips_opts.micromips == 1) | |
16255 | as_fatal (_("`mips16' cannot be used with `micromips'")); | |
16256 | mips_opts.mips16 = 1; | |
16257 | } | |
252b5132 RH |
16258 | else if (strcmp (name, "nomips16") == 0 |
16259 | || strcmp (name, "noMIPS-16") == 0) | |
16260 | mips_opts.mips16 = 0; | |
df58fc94 RS |
16261 | else if (strcmp (name, "micromips") == 0) |
16262 | { | |
16263 | if (mips_opts.mips16 == 1) | |
16264 | as_fatal (_("`micromips' cannot be used with `mips16'")); | |
16265 | mips_opts.micromips = 1; | |
16266 | } | |
16267 | else if (strcmp (name, "nomicromips") == 0) | |
16268 | mips_opts.micromips = 0; | |
e16bfa71 TS |
16269 | else if (strcmp (name, "smartmips") == 0) |
16270 | { | |
ad3fea08 | 16271 | if (!ISA_SUPPORTS_SMARTMIPS) |
20203fb9 | 16272 | as_warn (_("%s ISA does not support SmartMIPS ASE"), |
e16bfa71 TS |
16273 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16274 | mips_opts.ase_smartmips = 1; | |
16275 | } | |
16276 | else if (strcmp (name, "nosmartmips") == 0) | |
16277 | mips_opts.ase_smartmips = 0; | |
1f25f5d3 CD |
16278 | else if (strcmp (name, "mips3d") == 0) |
16279 | mips_opts.ase_mips3d = 1; | |
16280 | else if (strcmp (name, "nomips3d") == 0) | |
16281 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
16282 | else if (strcmp (name, "mdmx") == 0) |
16283 | mips_opts.ase_mdmx = 1; | |
16284 | else if (strcmp (name, "nomdmx") == 0) | |
16285 | mips_opts.ase_mdmx = 0; | |
74cd071d | 16286 | else if (strcmp (name, "dsp") == 0) |
ad3fea08 TS |
16287 | { |
16288 | if (!ISA_SUPPORTS_DSP_ASE) | |
20203fb9 | 16289 | as_warn (_("%s ISA does not support DSP ASE"), |
ad3fea08 TS |
16290 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16291 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 16292 | mips_opts.ase_dspr2 = 0; |
ad3fea08 | 16293 | } |
74cd071d | 16294 | else if (strcmp (name, "nodsp") == 0) |
8b082fb1 TS |
16295 | { |
16296 | mips_opts.ase_dsp = 0; | |
16297 | mips_opts.ase_dspr2 = 0; | |
16298 | } | |
16299 | else if (strcmp (name, "dspr2") == 0) | |
16300 | { | |
16301 | if (!ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 | 16302 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
8b082fb1 TS |
16303 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16304 | mips_opts.ase_dspr2 = 1; | |
16305 | mips_opts.ase_dsp = 1; | |
16306 | } | |
16307 | else if (strcmp (name, "nodspr2") == 0) | |
16308 | { | |
16309 | mips_opts.ase_dspr2 = 0; | |
16310 | mips_opts.ase_dsp = 0; | |
16311 | } | |
ef2e4d86 | 16312 | else if (strcmp (name, "mt") == 0) |
ad3fea08 TS |
16313 | { |
16314 | if (!ISA_SUPPORTS_MT_ASE) | |
20203fb9 | 16315 | as_warn (_("%s ISA does not support MT ASE"), |
ad3fea08 TS |
16316 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16317 | mips_opts.ase_mt = 1; | |
16318 | } | |
ef2e4d86 CF |
16319 | else if (strcmp (name, "nomt") == 0) |
16320 | mips_opts.ase_mt = 0; | |
dec0624d MR |
16321 | else if (strcmp (name, "mcu") == 0) |
16322 | mips_opts.ase_mcu = 1; | |
16323 | else if (strcmp (name, "nomcu") == 0) | |
16324 | mips_opts.ase_mcu = 0; | |
1a2c1fad | 16325 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 16326 | { |
af7ee8bf | 16327 | int reset = 0; |
252b5132 | 16328 | |
1a2c1fad CD |
16329 | /* Permit the user to change the ISA and architecture on the fly. |
16330 | Needless to say, misuse can cause serious problems. */ | |
81a21e38 | 16331 | if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) |
af7ee8bf CD |
16332 | { |
16333 | reset = 1; | |
16334 | mips_opts.isa = file_mips_isa; | |
1a2c1fad | 16335 | mips_opts.arch = file_mips_arch; |
1a2c1fad CD |
16336 | } |
16337 | else if (strncmp (name, "arch=", 5) == 0) | |
16338 | { | |
16339 | const struct mips_cpu_info *p; | |
16340 | ||
16341 | p = mips_parse_cpu("internal use", name + 5); | |
16342 | if (!p) | |
16343 | as_bad (_("unknown architecture %s"), name + 5); | |
16344 | else | |
16345 | { | |
16346 | mips_opts.arch = p->cpu; | |
16347 | mips_opts.isa = p->isa; | |
16348 | } | |
16349 | } | |
81a21e38 TS |
16350 | else if (strncmp (name, "mips", 4) == 0) |
16351 | { | |
16352 | const struct mips_cpu_info *p; | |
16353 | ||
16354 | p = mips_parse_cpu("internal use", name); | |
16355 | if (!p) | |
16356 | as_bad (_("unknown ISA level %s"), name + 4); | |
16357 | else | |
16358 | { | |
16359 | mips_opts.arch = p->cpu; | |
16360 | mips_opts.isa = p->isa; | |
16361 | } | |
16362 | } | |
af7ee8bf | 16363 | else |
81a21e38 | 16364 | as_bad (_("unknown ISA or architecture %s"), name); |
af7ee8bf CD |
16365 | |
16366 | switch (mips_opts.isa) | |
98d3f06f KH |
16367 | { |
16368 | case 0: | |
98d3f06f | 16369 | break; |
af7ee8bf CD |
16370 | case ISA_MIPS1: |
16371 | case ISA_MIPS2: | |
16372 | case ISA_MIPS32: | |
16373 | case ISA_MIPS32R2: | |
98d3f06f KH |
16374 | mips_opts.gp32 = 1; |
16375 | mips_opts.fp32 = 1; | |
16376 | break; | |
af7ee8bf CD |
16377 | case ISA_MIPS3: |
16378 | case ISA_MIPS4: | |
16379 | case ISA_MIPS5: | |
16380 | case ISA_MIPS64: | |
5f74bc13 | 16381 | case ISA_MIPS64R2: |
98d3f06f KH |
16382 | mips_opts.gp32 = 0; |
16383 | mips_opts.fp32 = 0; | |
16384 | break; | |
16385 | default: | |
16386 | as_bad (_("unknown ISA level %s"), name + 4); | |
16387 | break; | |
16388 | } | |
af7ee8bf | 16389 | if (reset) |
98d3f06f | 16390 | { |
af7ee8bf CD |
16391 | mips_opts.gp32 = file_mips_gp32; |
16392 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 16393 | } |
252b5132 RH |
16394 | } |
16395 | else if (strcmp (name, "autoextend") == 0) | |
16396 | mips_opts.noautoextend = 0; | |
16397 | else if (strcmp (name, "noautoextend") == 0) | |
16398 | mips_opts.noautoextend = 1; | |
16399 | else if (strcmp (name, "push") == 0) | |
16400 | { | |
16401 | struct mips_option_stack *s; | |
16402 | ||
16403 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
16404 | s->next = mips_opts_stack; | |
16405 | s->options = mips_opts; | |
16406 | mips_opts_stack = s; | |
16407 | } | |
16408 | else if (strcmp (name, "pop") == 0) | |
16409 | { | |
16410 | struct mips_option_stack *s; | |
16411 | ||
16412 | s = mips_opts_stack; | |
16413 | if (s == NULL) | |
16414 | as_bad (_(".set pop with no .set push")); | |
16415 | else | |
16416 | { | |
16417 | /* If we're changing the reorder mode we need to handle | |
16418 | delay slots correctly. */ | |
16419 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 16420 | start_noreorder (); |
252b5132 | 16421 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 16422 | end_noreorder (); |
252b5132 RH |
16423 | |
16424 | mips_opts = s->options; | |
16425 | mips_opts_stack = s->next; | |
16426 | free (s); | |
16427 | } | |
16428 | } | |
aed1a261 RS |
16429 | else if (strcmp (name, "sym32") == 0) |
16430 | mips_opts.sym32 = TRUE; | |
16431 | else if (strcmp (name, "nosym32") == 0) | |
16432 | mips_opts.sym32 = FALSE; | |
e6559e01 JM |
16433 | else if (strchr (name, ',')) |
16434 | { | |
16435 | /* Generic ".set" directive; use the generic handler. */ | |
16436 | *input_line_pointer = ch; | |
16437 | input_line_pointer = name; | |
16438 | s_set (0); | |
16439 | return; | |
16440 | } | |
252b5132 RH |
16441 | else |
16442 | { | |
16443 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
16444 | } | |
16445 | *input_line_pointer = ch; | |
16446 | demand_empty_rest_of_line (); | |
16447 | } | |
16448 | ||
16449 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
16450 | .option pic2. It means to generate SVR4 PIC calls. */ | |
16451 | ||
16452 | static void | |
17a2f251 | 16453 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16454 | { |
16455 | mips_pic = SVR4_PIC; | |
143d77c5 | 16456 | mips_abicalls = TRUE; |
4d0d148d TS |
16457 | |
16458 | if (g_switch_seen && g_switch_value != 0) | |
16459 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
16460 | g_switch_value = 0; | |
16461 | ||
252b5132 RH |
16462 | bfd_set_gp_size (stdoutput, 0); |
16463 | demand_empty_rest_of_line (); | |
16464 | } | |
16465 | ||
16466 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
16467 | PIC code. It sets the $gp register for the function based on the | |
16468 | function address, which is in the register named in the argument. | |
16469 | This uses a relocation against _gp_disp, which is handled specially | |
16470 | by the linker. The result is: | |
16471 | lui $gp,%hi(_gp_disp) | |
16472 | addiu $gp,$gp,%lo(_gp_disp) | |
16473 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
16474 | The .cpload argument is normally $25 == $t9. |
16475 | ||
16476 | The -mno-shared option changes this to: | |
bbe506e8 TS |
16477 | lui $gp,%hi(__gnu_local_gp) |
16478 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
16479 | and the argument is ignored. This saves an instruction, but the |
16480 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
16481 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
16482 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
16483 | |
16484 | static void | |
17a2f251 | 16485 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16486 | { |
16487 | expressionS ex; | |
aa6975fb ILT |
16488 | int reg; |
16489 | int in_shared; | |
252b5132 | 16490 | |
6478892d TS |
16491 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
16492 | .cpload is ignored. */ | |
16493 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
16494 | { |
16495 | s_ignore (0); | |
16496 | return; | |
16497 | } | |
16498 | ||
a276b80c MR |
16499 | if (mips_opts.mips16) |
16500 | { | |
16501 | as_bad (_("%s not supported in MIPS16 mode"), ".cpload"); | |
16502 | ignore_rest_of_line (); | |
16503 | return; | |
16504 | } | |
16505 | ||
d3ecfc59 | 16506 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
16507 | if (mips_opts.noreorder == 0) |
16508 | as_warn (_(".cpload not in noreorder section")); | |
16509 | ||
aa6975fb ILT |
16510 | reg = tc_get_register (0); |
16511 | ||
16512 | /* If we need to produce a 64-bit address, we are better off using | |
16513 | the default instruction sequence. */ | |
aed1a261 | 16514 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 16515 | |
252b5132 | 16516 | ex.X_op = O_symbol; |
bbe506e8 TS |
16517 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
16518 | "__gnu_local_gp"); | |
252b5132 RH |
16519 | ex.X_op_symbol = NULL; |
16520 | ex.X_add_number = 0; | |
16521 | ||
16522 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 16523 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 16524 | |
584892a6 | 16525 | macro_start (); |
67c0d1eb RS |
16526 | macro_build_lui (&ex, mips_gp_register); |
16527 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 16528 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
16529 | if (in_shared) |
16530 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
16531 | mips_gp_register, reg); | |
584892a6 | 16532 | macro_end (); |
252b5132 RH |
16533 | |
16534 | demand_empty_rest_of_line (); | |
16535 | } | |
16536 | ||
6478892d TS |
16537 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
16538 | .cpsetup $reg1, offset|$reg2, label | |
16539 | ||
16540 | If offset is given, this results in: | |
16541 | sd $gp, offset($sp) | |
956cd1d6 | 16542 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
16543 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
16544 | daddu $gp, $gp, $reg1 | |
6478892d TS |
16545 | |
16546 | If $reg2 is given, this results in: | |
16547 | daddu $reg2, $gp, $0 | |
956cd1d6 | 16548 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
16549 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
16550 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
16551 | $reg1 is normally $25 == $t9. |
16552 | ||
16553 | The -mno-shared option replaces the last three instructions with | |
16554 | lui $gp,%hi(_gp) | |
54f4ddb3 | 16555 | addiu $gp,$gp,%lo(_gp) */ |
aa6975fb | 16556 | |
6478892d | 16557 | static void |
17a2f251 | 16558 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16559 | { |
16560 | expressionS ex_off; | |
16561 | expressionS ex_sym; | |
16562 | int reg1; | |
6478892d | 16563 | |
8586fc66 | 16564 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
16565 | We also need NewABI support. */ |
16566 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16567 | { | |
16568 | s_ignore (0); | |
16569 | return; | |
16570 | } | |
16571 | ||
a276b80c MR |
16572 | if (mips_opts.mips16) |
16573 | { | |
16574 | as_bad (_("%s not supported in MIPS16 mode"), ".cpsetup"); | |
16575 | ignore_rest_of_line (); | |
16576 | return; | |
16577 | } | |
16578 | ||
6478892d TS |
16579 | reg1 = tc_get_register (0); |
16580 | SKIP_WHITESPACE (); | |
16581 | if (*input_line_pointer != ',') | |
16582 | { | |
16583 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
16584 | return; | |
16585 | } | |
16586 | else | |
80245285 | 16587 | ++input_line_pointer; |
6478892d TS |
16588 | SKIP_WHITESPACE (); |
16589 | if (*input_line_pointer == '$') | |
80245285 TS |
16590 | { |
16591 | mips_cpreturn_register = tc_get_register (0); | |
16592 | mips_cpreturn_offset = -1; | |
16593 | } | |
6478892d | 16594 | else |
80245285 TS |
16595 | { |
16596 | mips_cpreturn_offset = get_absolute_expression (); | |
16597 | mips_cpreturn_register = -1; | |
16598 | } | |
6478892d TS |
16599 | SKIP_WHITESPACE (); |
16600 | if (*input_line_pointer != ',') | |
16601 | { | |
16602 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
16603 | return; | |
16604 | } | |
16605 | else | |
f9419b05 | 16606 | ++input_line_pointer; |
6478892d | 16607 | SKIP_WHITESPACE (); |
f21f8242 | 16608 | expression (&ex_sym); |
6478892d | 16609 | |
584892a6 | 16610 | macro_start (); |
6478892d TS |
16611 | if (mips_cpreturn_register == -1) |
16612 | { | |
16613 | ex_off.X_op = O_constant; | |
16614 | ex_off.X_add_symbol = NULL; | |
16615 | ex_off.X_op_symbol = NULL; | |
16616 | ex_off.X_add_number = mips_cpreturn_offset; | |
16617 | ||
67c0d1eb | 16618 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 16619 | BFD_RELOC_LO16, SP); |
6478892d TS |
16620 | } |
16621 | else | |
67c0d1eb | 16622 | macro_build (NULL, "daddu", "d,v,t", mips_cpreturn_register, |
17a2f251 | 16623 | mips_gp_register, 0); |
6478892d | 16624 | |
aed1a261 | 16625 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb | 16626 | { |
df58fc94 | 16627 | macro_build (&ex_sym, "lui", LUI_FMT, mips_gp_register, |
aa6975fb ILT |
16628 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, |
16629 | BFD_RELOC_HI16_S); | |
16630 | ||
16631 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
16632 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
16633 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
16634 | ||
16635 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
16636 | mips_gp_register, reg1); | |
16637 | } | |
16638 | else | |
16639 | { | |
16640 | expressionS ex; | |
16641 | ||
16642 | ex.X_op = O_symbol; | |
4184909a | 16643 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
16644 | ex.X_op_symbol = NULL; |
16645 | ex.X_add_number = 0; | |
6e1304d8 | 16646 | |
aa6975fb ILT |
16647 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
16648 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
16649 | ||
16650 | macro_build_lui (&ex, mips_gp_register); | |
16651 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
16652 | mips_gp_register, BFD_RELOC_LO16); | |
16653 | } | |
f21f8242 | 16654 | |
584892a6 | 16655 | macro_end (); |
6478892d TS |
16656 | |
16657 | demand_empty_rest_of_line (); | |
16658 | } | |
16659 | ||
16660 | static void | |
17a2f251 | 16661 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16662 | { |
16663 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
54f4ddb3 | 16664 | .cplocal is ignored. */ |
6478892d TS |
16665 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) |
16666 | { | |
16667 | s_ignore (0); | |
16668 | return; | |
16669 | } | |
16670 | ||
a276b80c MR |
16671 | if (mips_opts.mips16) |
16672 | { | |
16673 | as_bad (_("%s not supported in MIPS16 mode"), ".cplocal"); | |
16674 | ignore_rest_of_line (); | |
16675 | return; | |
16676 | } | |
16677 | ||
6478892d | 16678 | mips_gp_register = tc_get_register (0); |
85b51719 | 16679 | demand_empty_rest_of_line (); |
6478892d TS |
16680 | } |
16681 | ||
252b5132 RH |
16682 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
16683 | offset from $sp. The offset is remembered, and after making a PIC | |
16684 | call $gp is restored from that location. */ | |
16685 | ||
16686 | static void | |
17a2f251 | 16687 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16688 | { |
16689 | expressionS ex; | |
252b5132 | 16690 | |
6478892d | 16691 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 16692 | .cprestore is ignored. */ |
6478892d | 16693 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
16694 | { |
16695 | s_ignore (0); | |
16696 | return; | |
16697 | } | |
16698 | ||
a276b80c MR |
16699 | if (mips_opts.mips16) |
16700 | { | |
16701 | as_bad (_("%s not supported in MIPS16 mode"), ".cprestore"); | |
16702 | ignore_rest_of_line (); | |
16703 | return; | |
16704 | } | |
16705 | ||
252b5132 | 16706 | mips_cprestore_offset = get_absolute_expression (); |
7a621144 | 16707 | mips_cprestore_valid = 1; |
252b5132 RH |
16708 | |
16709 | ex.X_op = O_constant; | |
16710 | ex.X_add_symbol = NULL; | |
16711 | ex.X_op_symbol = NULL; | |
16712 | ex.X_add_number = mips_cprestore_offset; | |
16713 | ||
584892a6 | 16714 | macro_start (); |
67c0d1eb RS |
16715 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
16716 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 16717 | macro_end (); |
252b5132 RH |
16718 | |
16719 | demand_empty_rest_of_line (); | |
16720 | } | |
16721 | ||
6478892d | 16722 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 16723 | was given in the preceding .cpsetup, it results in: |
6478892d | 16724 | ld $gp, offset($sp) |
76b3015f | 16725 | |
6478892d | 16726 | If a register $reg2 was given there, it results in: |
54f4ddb3 TS |
16727 | daddu $gp, $reg2, $0 */ |
16728 | ||
6478892d | 16729 | static void |
17a2f251 | 16730 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16731 | { |
16732 | expressionS ex; | |
6478892d TS |
16733 | |
16734 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
16735 | We also need NewABI support. */ | |
16736 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16737 | { | |
16738 | s_ignore (0); | |
16739 | return; | |
16740 | } | |
16741 | ||
a276b80c MR |
16742 | if (mips_opts.mips16) |
16743 | { | |
16744 | as_bad (_("%s not supported in MIPS16 mode"), ".cpreturn"); | |
16745 | ignore_rest_of_line (); | |
16746 | return; | |
16747 | } | |
16748 | ||
584892a6 | 16749 | macro_start (); |
6478892d TS |
16750 | if (mips_cpreturn_register == -1) |
16751 | { | |
16752 | ex.X_op = O_constant; | |
16753 | ex.X_add_symbol = NULL; | |
16754 | ex.X_op_symbol = NULL; | |
16755 | ex.X_add_number = mips_cpreturn_offset; | |
16756 | ||
67c0d1eb | 16757 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
16758 | } |
16759 | else | |
67c0d1eb | 16760 | macro_build (NULL, "daddu", "d,v,t", mips_gp_register, |
17a2f251 | 16761 | mips_cpreturn_register, 0); |
584892a6 | 16762 | macro_end (); |
6478892d TS |
16763 | |
16764 | demand_empty_rest_of_line (); | |
16765 | } | |
16766 | ||
d0f13682 CLT |
16767 | /* Handle a .dtprelword, .dtpreldword, .tprelword, or .tpreldword |
16768 | pseudo-op; DIRSTR says which. The pseudo-op generates a BYTES-size | |
16769 | DTP- or TP-relative relocation of type RTYPE, for use in either DWARF | |
16770 | debug information or MIPS16 TLS. */ | |
741d6ea8 JM |
16771 | |
16772 | static void | |
d0f13682 CLT |
16773 | s_tls_rel_directive (const size_t bytes, const char *dirstr, |
16774 | bfd_reloc_code_real_type rtype) | |
741d6ea8 JM |
16775 | { |
16776 | expressionS ex; | |
16777 | char *p; | |
16778 | ||
16779 | expression (&ex); | |
16780 | ||
16781 | if (ex.X_op != O_symbol) | |
16782 | { | |
d0f13682 | 16783 | as_bad (_("Unsupported use of %s"), dirstr); |
741d6ea8 JM |
16784 | ignore_rest_of_line (); |
16785 | } | |
16786 | ||
16787 | p = frag_more (bytes); | |
16788 | md_number_to_chars (p, 0, bytes); | |
d0f13682 | 16789 | fix_new_exp (frag_now, p - frag_now->fr_literal, bytes, &ex, FALSE, rtype); |
741d6ea8 | 16790 | demand_empty_rest_of_line (); |
de64cffd | 16791 | mips_clear_insn_labels (); |
741d6ea8 JM |
16792 | } |
16793 | ||
16794 | /* Handle .dtprelword. */ | |
16795 | ||
16796 | static void | |
16797 | s_dtprelword (int ignore ATTRIBUTE_UNUSED) | |
16798 | { | |
d0f13682 | 16799 | s_tls_rel_directive (4, ".dtprelword", BFD_RELOC_MIPS_TLS_DTPREL32); |
741d6ea8 JM |
16800 | } |
16801 | ||
16802 | /* Handle .dtpreldword. */ | |
16803 | ||
16804 | static void | |
16805 | s_dtpreldword (int ignore ATTRIBUTE_UNUSED) | |
16806 | { | |
d0f13682 CLT |
16807 | s_tls_rel_directive (8, ".dtpreldword", BFD_RELOC_MIPS_TLS_DTPREL64); |
16808 | } | |
16809 | ||
16810 | /* Handle .tprelword. */ | |
16811 | ||
16812 | static void | |
16813 | s_tprelword (int ignore ATTRIBUTE_UNUSED) | |
16814 | { | |
16815 | s_tls_rel_directive (4, ".tprelword", BFD_RELOC_MIPS_TLS_TPREL32); | |
16816 | } | |
16817 | ||
16818 | /* Handle .tpreldword. */ | |
16819 | ||
16820 | static void | |
16821 | s_tpreldword (int ignore ATTRIBUTE_UNUSED) | |
16822 | { | |
16823 | s_tls_rel_directive (8, ".tpreldword", BFD_RELOC_MIPS_TLS_TPREL64); | |
741d6ea8 JM |
16824 | } |
16825 | ||
6478892d TS |
16826 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC |
16827 | code. It sets the offset to use in gp_rel relocations. */ | |
16828 | ||
16829 | static void | |
17a2f251 | 16830 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16831 | { |
16832 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
16833 | We also need NewABI support. */ | |
16834 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16835 | { | |
16836 | s_ignore (0); | |
16837 | return; | |
16838 | } | |
16839 | ||
def2e0dd | 16840 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
16841 | |
16842 | demand_empty_rest_of_line (); | |
16843 | } | |
16844 | ||
252b5132 RH |
16845 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
16846 | code. It generates a 32 bit GP relative reloc. */ | |
16847 | ||
16848 | static void | |
17a2f251 | 16849 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16850 | { |
a8dbcb85 TS |
16851 | segment_info_type *si; |
16852 | struct insn_label_list *l; | |
252b5132 RH |
16853 | expressionS ex; |
16854 | char *p; | |
16855 | ||
16856 | /* When not generating PIC code, this is treated as .word. */ | |
16857 | if (mips_pic != SVR4_PIC) | |
16858 | { | |
16859 | s_cons (2); | |
16860 | return; | |
16861 | } | |
16862 | ||
a8dbcb85 TS |
16863 | si = seg_info (now_seg); |
16864 | l = si->label_list; | |
7d10b47d | 16865 | mips_emit_delays (); |
252b5132 | 16866 | if (auto_align) |
462427c4 | 16867 | mips_align (2, 0, l); |
252b5132 RH |
16868 | |
16869 | expression (&ex); | |
a1facbec | 16870 | mips_clear_insn_labels (); |
252b5132 RH |
16871 | |
16872 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16873 | { | |
16874 | as_bad (_("Unsupported use of .gpword")); | |
16875 | ignore_rest_of_line (); | |
16876 | } | |
16877 | ||
16878 | p = frag_more (4); | |
17a2f251 | 16879 | md_number_to_chars (p, 0, 4); |
b34976b6 | 16880 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 16881 | BFD_RELOC_GPREL32); |
252b5132 RH |
16882 | |
16883 | demand_empty_rest_of_line (); | |
16884 | } | |
16885 | ||
10181a0d | 16886 | static void |
17a2f251 | 16887 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d | 16888 | { |
a8dbcb85 TS |
16889 | segment_info_type *si; |
16890 | struct insn_label_list *l; | |
10181a0d AO |
16891 | expressionS ex; |
16892 | char *p; | |
16893 | ||
16894 | /* When not generating PIC code, this is treated as .dword. */ | |
16895 | if (mips_pic != SVR4_PIC) | |
16896 | { | |
16897 | s_cons (3); | |
16898 | return; | |
16899 | } | |
16900 | ||
a8dbcb85 TS |
16901 | si = seg_info (now_seg); |
16902 | l = si->label_list; | |
7d10b47d | 16903 | mips_emit_delays (); |
10181a0d | 16904 | if (auto_align) |
462427c4 | 16905 | mips_align (3, 0, l); |
10181a0d AO |
16906 | |
16907 | expression (&ex); | |
a1facbec | 16908 | mips_clear_insn_labels (); |
10181a0d AO |
16909 | |
16910 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16911 | { | |
16912 | as_bad (_("Unsupported use of .gpdword")); | |
16913 | ignore_rest_of_line (); | |
16914 | } | |
16915 | ||
16916 | p = frag_more (8); | |
17a2f251 | 16917 | md_number_to_chars (p, 0, 8); |
a105a300 | 16918 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 16919 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
16920 | |
16921 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
16922 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
16923 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
16924 | |
16925 | demand_empty_rest_of_line (); | |
16926 | } | |
16927 | ||
252b5132 RH |
16928 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
16929 | tables in SVR4 PIC code. */ | |
16930 | ||
16931 | static void | |
17a2f251 | 16932 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16933 | { |
252b5132 RH |
16934 | int reg; |
16935 | ||
10181a0d AO |
16936 | /* This is ignored when not generating SVR4 PIC code. */ |
16937 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
16938 | { |
16939 | s_ignore (0); | |
16940 | return; | |
16941 | } | |
16942 | ||
16943 | /* Add $gp to the register named as an argument. */ | |
584892a6 | 16944 | macro_start (); |
252b5132 | 16945 | reg = tc_get_register (0); |
67c0d1eb | 16946 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 16947 | macro_end (); |
252b5132 | 16948 | |
bdaaa2e1 | 16949 | demand_empty_rest_of_line (); |
252b5132 RH |
16950 | } |
16951 | ||
16952 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
df58fc94 | 16953 | mips16/micromips mode. This permits the linker to handle them specially, |
252b5132 RH |
16954 | such as generating jalx instructions when needed. We also make |
16955 | them odd for the duration of the assembly, in order to generate the | |
16956 | right sort of code. We will make them even in the adjust_symtab | |
16957 | routine, while leaving them marked. This is convenient for the | |
16958 | debugger and the disassembler. The linker knows to make them odd | |
16959 | again. */ | |
16960 | ||
16961 | static void | |
17a2f251 | 16962 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16963 | { |
df58fc94 | 16964 | mips_mark_labels (); |
252b5132 RH |
16965 | |
16966 | demand_empty_rest_of_line (); | |
16967 | } | |
16968 | ||
16969 | /* Handle a .stabn directive. We need these in order to mark a label | |
16970 | as being a mips16 text label correctly. Sometimes the compiler | |
16971 | will emit a label, followed by a .stabn, and then switch sections. | |
16972 | If the label and .stabn are in mips16 mode, then the label is | |
16973 | really a mips16 text label. */ | |
16974 | ||
16975 | static void | |
17a2f251 | 16976 | s_mips_stab (int type) |
252b5132 | 16977 | { |
f9419b05 | 16978 | if (type == 'n') |
df58fc94 | 16979 | mips_mark_labels (); |
252b5132 RH |
16980 | |
16981 | s_stab (type); | |
16982 | } | |
16983 | ||
54f4ddb3 | 16984 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
252b5132 RH |
16985 | |
16986 | static void | |
17a2f251 | 16987 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16988 | { |
16989 | char *name; | |
16990 | int c; | |
16991 | symbolS *symbolP; | |
16992 | expressionS exp; | |
16993 | ||
16994 | name = input_line_pointer; | |
16995 | c = get_symbol_end (); | |
16996 | symbolP = symbol_find_or_make (name); | |
16997 | S_SET_WEAK (symbolP); | |
16998 | *input_line_pointer = c; | |
16999 | ||
17000 | SKIP_WHITESPACE (); | |
17001 | ||
17002 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
17003 | { | |
17004 | if (S_IS_DEFINED (symbolP)) | |
17005 | { | |
20203fb9 | 17006 | as_bad (_("ignoring attempt to redefine symbol %s"), |
252b5132 RH |
17007 | S_GET_NAME (symbolP)); |
17008 | ignore_rest_of_line (); | |
17009 | return; | |
17010 | } | |
bdaaa2e1 | 17011 | |
252b5132 RH |
17012 | if (*input_line_pointer == ',') |
17013 | { | |
17014 | ++input_line_pointer; | |
17015 | SKIP_WHITESPACE (); | |
17016 | } | |
bdaaa2e1 | 17017 | |
252b5132 RH |
17018 | expression (&exp); |
17019 | if (exp.X_op != O_symbol) | |
17020 | { | |
20203fb9 | 17021 | as_bad (_("bad .weakext directive")); |
98d3f06f | 17022 | ignore_rest_of_line (); |
252b5132 RH |
17023 | return; |
17024 | } | |
49309057 | 17025 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
17026 | } |
17027 | ||
17028 | demand_empty_rest_of_line (); | |
17029 | } | |
17030 | ||
17031 | /* Parse a register string into a number. Called from the ECOFF code | |
17032 | to parse .frame. The argument is non-zero if this is the frame | |
17033 | register, so that we can record it in mips_frame_reg. */ | |
17034 | ||
17035 | int | |
17a2f251 | 17036 | tc_get_register (int frame) |
252b5132 | 17037 | { |
707bfff6 | 17038 | unsigned int reg; |
252b5132 RH |
17039 | |
17040 | SKIP_WHITESPACE (); | |
707bfff6 TS |
17041 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
17042 | reg = 0; | |
252b5132 | 17043 | if (frame) |
7a621144 DJ |
17044 | { |
17045 | mips_frame_reg = reg != 0 ? reg : SP; | |
17046 | mips_frame_reg_valid = 1; | |
17047 | mips_cprestore_valid = 0; | |
17048 | } | |
252b5132 RH |
17049 | return reg; |
17050 | } | |
17051 | ||
17052 | valueT | |
17a2f251 | 17053 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
17054 | { |
17055 | int align = bfd_get_section_alignment (stdoutput, seg); | |
17056 | ||
b4c71f56 TS |
17057 | if (IS_ELF) |
17058 | { | |
17059 | /* We don't need to align ELF sections to the full alignment. | |
17060 | However, Irix 5 may prefer that we align them at least to a 16 | |
17061 | byte boundary. We don't bother to align the sections if we | |
17062 | are targeted for an embedded system. */ | |
c41e87e3 | 17063 | if (strncmp (TARGET_OS, "elf", 3) == 0) |
b4c71f56 TS |
17064 | return addr; |
17065 | if (align > 4) | |
17066 | align = 4; | |
17067 | } | |
252b5132 RH |
17068 | |
17069 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
17070 | } | |
17071 | ||
17072 | /* Utility routine, called from above as well. If called while the | |
17073 | input file is still being read, it's only an approximation. (For | |
17074 | example, a symbol may later become defined which appeared to be | |
17075 | undefined earlier.) */ | |
17076 | ||
17077 | static int | |
17a2f251 | 17078 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
17079 | { |
17080 | if (sym == 0) | |
17081 | return 0; | |
17082 | ||
4d0d148d | 17083 | if (g_switch_value > 0) |
252b5132 RH |
17084 | { |
17085 | const char *symname; | |
17086 | int change; | |
17087 | ||
c9914766 | 17088 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
17089 | register. It can be if it is smaller than the -G size or if |
17090 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 17091 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
17092 | they can. */ |
17093 | symname = S_GET_NAME (sym); | |
17094 | if (symname != (const char *) NULL | |
17095 | && (strcmp (symname, "eprol") == 0 | |
17096 | || strcmp (symname, "etext") == 0 | |
17097 | || strcmp (symname, "_gp") == 0 | |
17098 | || strcmp (symname, "edata") == 0 | |
17099 | || strcmp (symname, "_fbss") == 0 | |
17100 | || strcmp (symname, "_fdata") == 0 | |
17101 | || strcmp (symname, "_ftext") == 0 | |
17102 | || strcmp (symname, "end") == 0 | |
17103 | || strcmp (symname, "_gp_disp") == 0)) | |
17104 | change = 1; | |
17105 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
17106 | && (0 | |
17107 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
17108 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
17109 | && (symbol_get_obj (sym)->ecoff_extern_size | |
17110 | <= g_switch_value)) | |
252b5132 RH |
17111 | #endif |
17112 | /* We must defer this decision until after the whole | |
17113 | file has been read, since there might be a .extern | |
17114 | after the first use of this symbol. */ | |
17115 | || (before_relaxing | |
17116 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 17117 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
17118 | #endif |
17119 | && S_GET_VALUE (sym) == 0) | |
17120 | || (S_GET_VALUE (sym) != 0 | |
17121 | && S_GET_VALUE (sym) <= g_switch_value))) | |
17122 | change = 0; | |
17123 | else | |
17124 | { | |
17125 | const char *segname; | |
17126 | ||
17127 | segname = segment_name (S_GET_SEGMENT (sym)); | |
9c2799c2 | 17128 | gas_assert (strcmp (segname, ".lit8") != 0 |
252b5132 RH |
17129 | && strcmp (segname, ".lit4") != 0); |
17130 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
17131 | && strcmp (segname, ".sbss") != 0 |
17132 | && strncmp (segname, ".sdata.", 7) != 0 | |
d4dc2f22 TS |
17133 | && strncmp (segname, ".sbss.", 6) != 0 |
17134 | && strncmp (segname, ".gnu.linkonce.sb.", 17) != 0 | |
fba2b7f9 | 17135 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); |
252b5132 RH |
17136 | } |
17137 | return change; | |
17138 | } | |
17139 | else | |
c9914766 | 17140 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
17141 | return 1; |
17142 | } | |
17143 | ||
5919d012 RS |
17144 | |
17145 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
17146 | ||
17147 | static bfd_boolean | |
17a2f251 | 17148 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
17149 | { |
17150 | asection *symsec; | |
5919d012 RS |
17151 | |
17152 | /* Handle the case of a symbol equated to another symbol. */ | |
17153 | while (symbol_equated_reloc_p (sym)) | |
17154 | { | |
17155 | symbolS *n; | |
17156 | ||
5f0fe04b | 17157 | /* It's possible to get a loop here in a badly written program. */ |
5919d012 RS |
17158 | n = symbol_get_value_expression (sym)->X_add_symbol; |
17159 | if (n == sym) | |
17160 | break; | |
17161 | sym = n; | |
17162 | } | |
17163 | ||
df1f3cda DD |
17164 | if (symbol_section_p (sym)) |
17165 | return TRUE; | |
17166 | ||
5919d012 RS |
17167 | symsec = S_GET_SEGMENT (sym); |
17168 | ||
5919d012 | 17169 | /* This must duplicate the test in adjust_reloc_syms. */ |
45dfa85a AM |
17170 | return (!bfd_is_und_section (symsec) |
17171 | && !bfd_is_abs_section (symsec) | |
5f0fe04b TS |
17172 | && !bfd_is_com_section (symsec) |
17173 | && !s_is_linkonce (sym, segtype) | |
5919d012 RS |
17174 | #ifdef OBJ_ELF |
17175 | /* A global or weak symbol is treated as external. */ | |
f43abd2b | 17176 | && (!IS_ELF || (! S_IS_WEAK (sym) && ! S_IS_EXTERNAL (sym))) |
5919d012 RS |
17177 | #endif |
17178 | ); | |
17179 | } | |
17180 | ||
17181 | ||
252b5132 RH |
17182 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
17183 | extended opcode. SEC is the section the frag is in. */ | |
17184 | ||
17185 | static int | |
17a2f251 | 17186 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
17187 | { |
17188 | int type; | |
3994f87e | 17189 | const struct mips16_immed_operand *op; |
252b5132 RH |
17190 | offsetT val; |
17191 | int mintiny, maxtiny; | |
17192 | segT symsec; | |
98aa84af | 17193 | fragS *sym_frag; |
252b5132 RH |
17194 | |
17195 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
17196 | return 0; | |
17197 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
17198 | return 1; | |
17199 | ||
17200 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
17201 | op = mips16_immed_operands; | |
17202 | while (op->type != type) | |
17203 | { | |
17204 | ++op; | |
9c2799c2 | 17205 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
17206 | } |
17207 | ||
17208 | if (op->unsp) | |
17209 | { | |
17210 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
17211 | { | |
17212 | mintiny = 1; | |
17213 | maxtiny = 1 << op->nbits; | |
17214 | } | |
17215 | else | |
17216 | { | |
17217 | mintiny = 0; | |
17218 | maxtiny = (1 << op->nbits) - 1; | |
17219 | } | |
17220 | } | |
17221 | else | |
17222 | { | |
17223 | mintiny = - (1 << (op->nbits - 1)); | |
17224 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
17225 | } | |
17226 | ||
98aa84af | 17227 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 17228 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 17229 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
17230 | |
17231 | if (op->pcrel) | |
17232 | { | |
17233 | addressT addr; | |
17234 | ||
17235 | /* We won't have the section when we are called from | |
17236 | mips_relax_frag. However, we will always have been called | |
17237 | from md_estimate_size_before_relax first. If this is a | |
17238 | branch to a different section, we mark it as such. If SEC is | |
17239 | NULL, and the frag is not marked, then it must be a branch to | |
17240 | the same section. */ | |
17241 | if (sec == NULL) | |
17242 | { | |
17243 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
17244 | return 1; | |
17245 | } | |
17246 | else | |
17247 | { | |
98aa84af | 17248 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
17249 | if (symsec != sec) |
17250 | { | |
17251 | fragp->fr_subtype = | |
17252 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17253 | ||
17254 | /* FIXME: We should support this, and let the linker | |
17255 | catch branches and loads that are out of range. */ | |
17256 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
17257 | _("unsupported PC relative reference to different section")); | |
17258 | ||
17259 | return 1; | |
17260 | } | |
98aa84af AM |
17261 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
17262 | /* Assume non-extended on the first relaxation pass. | |
17263 | The address we have calculated will be bogus if this is | |
17264 | a forward branch to another frag, as the forward frag | |
17265 | will have fr_address == 0. */ | |
17266 | return 0; | |
252b5132 RH |
17267 | } |
17268 | ||
17269 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
17270 | the same section. If the relax_marker of the symbol fragment |
17271 | differs from the relax_marker of this fragment, we have not | |
17272 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
17273 | in STRETCH in order to get a better estimate of the address. |
17274 | This particularly matters because of the shift bits. */ | |
17275 | if (stretch != 0 | |
98aa84af | 17276 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
17277 | { |
17278 | fragS *f; | |
17279 | ||
17280 | /* Adjust stretch for any alignment frag. Note that if have | |
17281 | been expanding the earlier code, the symbol may be | |
17282 | defined in what appears to be an earlier frag. FIXME: | |
17283 | This doesn't handle the fr_subtype field, which specifies | |
17284 | a maximum number of bytes to skip when doing an | |
17285 | alignment. */ | |
98aa84af | 17286 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
17287 | { |
17288 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
17289 | { | |
17290 | if (stretch < 0) | |
17291 | stretch = - ((- stretch) | |
17292 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
17293 | else | |
17294 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
17295 | if (stretch == 0) | |
17296 | break; | |
17297 | } | |
17298 | } | |
17299 | if (f != NULL) | |
17300 | val += stretch; | |
17301 | } | |
17302 | ||
17303 | addr = fragp->fr_address + fragp->fr_fix; | |
17304 | ||
17305 | /* The base address rules are complicated. The base address of | |
17306 | a branch is the following instruction. The base address of a | |
17307 | PC relative load or add is the instruction itself, but if it | |
17308 | is in a delay slot (in which case it can not be extended) use | |
17309 | the address of the instruction whose delay slot it is in. */ | |
17310 | if (type == 'p' || type == 'q') | |
17311 | { | |
17312 | addr += 2; | |
17313 | ||
17314 | /* If we are currently assuming that this frag should be | |
17315 | extended, then, the current address is two bytes | |
bdaaa2e1 | 17316 | higher. */ |
252b5132 RH |
17317 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
17318 | addr += 2; | |
17319 | ||
17320 | /* Ignore the low bit in the target, since it will be set | |
17321 | for a text label. */ | |
17322 | if ((val & 1) != 0) | |
17323 | --val; | |
17324 | } | |
17325 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
17326 | addr -= 4; | |
17327 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
17328 | addr -= 2; | |
17329 | ||
17330 | val -= addr & ~ ((1 << op->shift) - 1); | |
17331 | ||
17332 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
17333 | if (type == 'p' || type == 'q') | |
17334 | val /= 2; | |
17335 | ||
17336 | /* If any of the shifted bits are set, we must use an extended | |
17337 | opcode. If the address depends on the size of this | |
17338 | instruction, this can lead to a loop, so we arrange to always | |
17339 | use an extended opcode. We only check this when we are in | |
17340 | the main relaxation loop, when SEC is NULL. */ | |
17341 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
17342 | { | |
17343 | fragp->fr_subtype = | |
17344 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17345 | return 1; | |
17346 | } | |
17347 | ||
17348 | /* If we are about to mark a frag as extended because the value | |
17349 | is precisely maxtiny + 1, then there is a chance of an | |
17350 | infinite loop as in the following code: | |
17351 | la $4,foo | |
17352 | .skip 1020 | |
17353 | .align 2 | |
17354 | foo: | |
17355 | In this case when the la is extended, foo is 0x3fc bytes | |
17356 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
17357 | the la must be extended. To avoid this loop, we mark the | |
17358 | frag as extended if it was small, and is about to become | |
17359 | extended with a value of maxtiny + 1. */ | |
17360 | if (val == ((maxtiny + 1) << op->shift) | |
17361 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
17362 | && sec == NULL) | |
17363 | { | |
17364 | fragp->fr_subtype = | |
17365 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17366 | return 1; | |
17367 | } | |
17368 | } | |
17369 | else if (symsec != absolute_section && sec != NULL) | |
17370 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
17371 | ||
17372 | if ((val & ((1 << op->shift) - 1)) != 0 | |
17373 | || val < (mintiny << op->shift) | |
17374 | || val > (maxtiny << op->shift)) | |
17375 | return 1; | |
17376 | else | |
17377 | return 0; | |
17378 | } | |
17379 | ||
4a6a3df4 AO |
17380 | /* Compute the length of a branch sequence, and adjust the |
17381 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
17382 | worst-case length is computed, with UPDATE being used to indicate | |
17383 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
17384 | branch is to be computed. */ | |
17385 | static int | |
17a2f251 | 17386 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 17387 | { |
b34976b6 | 17388 | bfd_boolean toofar; |
4a6a3df4 AO |
17389 | int length; |
17390 | ||
17391 | if (fragp | |
17392 | && S_IS_DEFINED (fragp->fr_symbol) | |
17393 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17394 | { | |
17395 | addressT addr; | |
17396 | offsetT val; | |
17397 | ||
17398 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17399 | ||
17400 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
17401 | ||
17402 | val -= addr; | |
17403 | ||
17404 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
17405 | } | |
17406 | else if (fragp) | |
17407 | /* If the symbol is not defined or it's in a different segment, | |
17408 | assume the user knows what's going on and emit a short | |
17409 | branch. */ | |
b34976b6 | 17410 | toofar = FALSE; |
4a6a3df4 | 17411 | else |
b34976b6 | 17412 | toofar = TRUE; |
4a6a3df4 AO |
17413 | |
17414 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
17415 | fragp->fr_subtype | |
66b3e8da MR |
17416 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_AT (fragp->fr_subtype), |
17417 | RELAX_BRANCH_UNCOND (fragp->fr_subtype), | |
4a6a3df4 AO |
17418 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
17419 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
17420 | toofar); | |
17421 | ||
17422 | length = 4; | |
17423 | if (toofar) | |
17424 | { | |
17425 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
17426 | length += 8; | |
17427 | ||
17428 | if (mips_pic != NO_PIC) | |
17429 | { | |
17430 | /* Additional space for PIC loading of target address. */ | |
17431 | length += 8; | |
17432 | if (mips_opts.isa == ISA_MIPS1) | |
17433 | /* Additional space for $at-stabilizing nop. */ | |
17434 | length += 4; | |
17435 | } | |
17436 | ||
17437 | /* If branch is conditional. */ | |
17438 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
17439 | length += 8; | |
17440 | } | |
b34976b6 | 17441 | |
4a6a3df4 AO |
17442 | return length; |
17443 | } | |
17444 | ||
df58fc94 RS |
17445 | /* Compute the length of a branch sequence, and adjust the |
17446 | RELAX_MICROMIPS_TOOFAR32 bit accordingly. If FRAGP is NULL, the | |
17447 | worst-case length is computed, with UPDATE being used to indicate | |
17448 | whether an unconditional (-1), or regular (0) branch is to be | |
17449 | computed. */ | |
17450 | ||
17451 | static int | |
17452 | relaxed_micromips_32bit_branch_length (fragS *fragp, asection *sec, int update) | |
17453 | { | |
17454 | bfd_boolean toofar; | |
17455 | int length; | |
17456 | ||
17457 | if (fragp | |
17458 | && S_IS_DEFINED (fragp->fr_symbol) | |
17459 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17460 | { | |
17461 | addressT addr; | |
17462 | offsetT val; | |
17463 | ||
17464 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17465 | /* Ignore the low bit in the target, since it will be set | |
17466 | for a text label. */ | |
17467 | if ((val & 1) != 0) | |
17468 | --val; | |
17469 | ||
17470 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
17471 | ||
17472 | val -= addr; | |
17473 | ||
17474 | toofar = val < - (0x8000 << 1) || val >= (0x8000 << 1); | |
17475 | } | |
17476 | else if (fragp) | |
17477 | /* If the symbol is not defined or it's in a different segment, | |
17478 | assume the user knows what's going on and emit a short | |
17479 | branch. */ | |
17480 | toofar = FALSE; | |
17481 | else | |
17482 | toofar = TRUE; | |
17483 | ||
17484 | if (fragp && update | |
17485 | && toofar != RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17486 | fragp->fr_subtype = (toofar | |
17487 | ? RELAX_MICROMIPS_MARK_TOOFAR32 (fragp->fr_subtype) | |
17488 | : RELAX_MICROMIPS_CLEAR_TOOFAR32 (fragp->fr_subtype)); | |
17489 | ||
17490 | length = 4; | |
17491 | if (toofar) | |
17492 | { | |
17493 | bfd_boolean compact_known = fragp != NULL; | |
17494 | bfd_boolean compact = FALSE; | |
17495 | bfd_boolean uncond; | |
17496 | ||
17497 | if (compact_known) | |
17498 | compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); | |
17499 | if (fragp) | |
17500 | uncond = RELAX_MICROMIPS_UNCOND (fragp->fr_subtype); | |
17501 | else | |
17502 | uncond = update < 0; | |
17503 | ||
17504 | /* If label is out of range, we turn branch <br>: | |
17505 | ||
17506 | <br> label # 4 bytes | |
17507 | 0: | |
17508 | ||
17509 | into: | |
17510 | ||
17511 | j label # 4 bytes | |
17512 | nop # 2 bytes if compact && !PIC | |
17513 | 0: | |
17514 | */ | |
17515 | if (mips_pic == NO_PIC && (!compact_known || compact)) | |
17516 | length += 2; | |
17517 | ||
17518 | /* If assembling PIC code, we further turn: | |
17519 | ||
17520 | j label # 4 bytes | |
17521 | ||
17522 | into: | |
17523 | ||
17524 | lw/ld at, %got(label)(gp) # 4 bytes | |
17525 | d/addiu at, %lo(label) # 4 bytes | |
17526 | jr/c at # 2 bytes | |
17527 | */ | |
17528 | if (mips_pic != NO_PIC) | |
17529 | length += 6; | |
17530 | ||
17531 | /* If branch <br> is conditional, we prepend negated branch <brneg>: | |
17532 | ||
17533 | <brneg> 0f # 4 bytes | |
17534 | nop # 2 bytes if !compact | |
17535 | */ | |
17536 | if (!uncond) | |
17537 | length += (compact_known && compact) ? 4 : 6; | |
17538 | } | |
17539 | ||
17540 | return length; | |
17541 | } | |
17542 | ||
17543 | /* Compute the length of a branch, and adjust the RELAX_MICROMIPS_TOOFAR16 | |
17544 | bit accordingly. */ | |
17545 | ||
17546 | static int | |
17547 | relaxed_micromips_16bit_branch_length (fragS *fragp, asection *sec, int update) | |
17548 | { | |
17549 | bfd_boolean toofar; | |
17550 | ||
df58fc94 RS |
17551 | if (fragp |
17552 | && S_IS_DEFINED (fragp->fr_symbol) | |
17553 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17554 | { | |
17555 | addressT addr; | |
17556 | offsetT val; | |
17557 | int type; | |
17558 | ||
17559 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17560 | /* Ignore the low bit in the target, since it will be set | |
17561 | for a text label. */ | |
17562 | if ((val & 1) != 0) | |
17563 | --val; | |
17564 | ||
17565 | /* Assume this is a 2-byte branch. */ | |
17566 | addr = fragp->fr_address + fragp->fr_fix + 2; | |
17567 | ||
17568 | /* We try to avoid the infinite loop by not adding 2 more bytes for | |
17569 | long branches. */ | |
17570 | ||
17571 | val -= addr; | |
17572 | ||
17573 | type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
17574 | if (type == 'D') | |
17575 | toofar = val < - (0x200 << 1) || val >= (0x200 << 1); | |
17576 | else if (type == 'E') | |
17577 | toofar = val < - (0x40 << 1) || val >= (0x40 << 1); | |
17578 | else | |
17579 | abort (); | |
17580 | } | |
17581 | else | |
17582 | /* If the symbol is not defined or it's in a different segment, | |
17583 | we emit a normal 32-bit branch. */ | |
17584 | toofar = TRUE; | |
17585 | ||
17586 | if (fragp && update | |
17587 | && toofar != RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
17588 | fragp->fr_subtype | |
17589 | = toofar ? RELAX_MICROMIPS_MARK_TOOFAR16 (fragp->fr_subtype) | |
17590 | : RELAX_MICROMIPS_CLEAR_TOOFAR16 (fragp->fr_subtype); | |
17591 | ||
17592 | if (toofar) | |
17593 | return 4; | |
17594 | ||
17595 | return 2; | |
17596 | } | |
17597 | ||
252b5132 RH |
17598 | /* Estimate the size of a frag before relaxing. Unless this is the |
17599 | mips16, we are not really relaxing here, and the final size is | |
17600 | encoded in the subtype information. For the mips16, we have to | |
17601 | decide whether we are using an extended opcode or not. */ | |
17602 | ||
252b5132 | 17603 | int |
17a2f251 | 17604 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 17605 | { |
5919d012 | 17606 | int change; |
252b5132 | 17607 | |
4a6a3df4 AO |
17608 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17609 | { | |
17610 | ||
b34976b6 AM |
17611 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
17612 | ||
4a6a3df4 AO |
17613 | return fragp->fr_var; |
17614 | } | |
17615 | ||
252b5132 | 17616 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
17617 | /* We don't want to modify the EXTENDED bit here; it might get us |
17618 | into infinite loops. We change it only in mips_relax_frag(). */ | |
17619 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 | 17620 | |
df58fc94 RS |
17621 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17622 | { | |
17623 | int length = 4; | |
17624 | ||
17625 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17626 | length = relaxed_micromips_16bit_branch_length (fragp, segtype, FALSE); | |
17627 | if (length == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17628 | length = relaxed_micromips_32bit_branch_length (fragp, segtype, FALSE); | |
17629 | fragp->fr_var = length; | |
17630 | ||
17631 | return length; | |
17632 | } | |
17633 | ||
252b5132 | 17634 | if (mips_pic == NO_PIC) |
5919d012 | 17635 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 17636 | else if (mips_pic == SVR4_PIC) |
5919d012 | 17637 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
17638 | else if (mips_pic == VXWORKS_PIC) |
17639 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
17640 | change = 0; | |
252b5132 RH |
17641 | else |
17642 | abort (); | |
17643 | ||
17644 | if (change) | |
17645 | { | |
4d7206a2 | 17646 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 17647 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 17648 | } |
4d7206a2 RS |
17649 | else |
17650 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
17651 | } |
17652 | ||
17653 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 17654 | should be converted into a reloc against a section. */ |
252b5132 RH |
17655 | |
17656 | int | |
17a2f251 | 17657 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 17658 | { |
252b5132 RH |
17659 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
17660 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
17661 | return 0; | |
a161fe53 | 17662 | |
252b5132 RH |
17663 | if (fixp->fx_addsy == NULL) |
17664 | return 1; | |
a161fe53 | 17665 | |
de7e6852 RS |
17666 | /* If symbol SYM is in a mergeable section, relocations of the form |
17667 | SYM + 0 can usually be made section-relative. The mergeable data | |
17668 | is then identified by the section offset rather than by the symbol. | |
17669 | ||
17670 | However, if we're generating REL LO16 relocations, the offset is split | |
17671 | between the LO16 and parterning high part relocation. The linker will | |
17672 | need to recalculate the complete offset in order to correctly identify | |
17673 | the merge data. | |
17674 | ||
17675 | The linker has traditionally not looked for the parterning high part | |
17676 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
17677 | placed anywhere. Rather than break backwards compatibility by changing | |
17678 | this, it seems better not to force the issue, and instead keep the | |
17679 | original symbol. This will work with either linker behavior. */ | |
738e5348 | 17680 | if ((lo16_reloc_p (fixp->fx_r_type) |
704803a9 | 17681 | || reloc_needs_lo_p (fixp->fx_r_type)) |
de7e6852 RS |
17682 | && HAVE_IN_PLACE_ADDENDS |
17683 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
17684 | return 0; | |
17685 | ||
ce70d90a MR |
17686 | /* There is no place to store an in-place offset for JALR relocations. |
17687 | Likewise an in-range offset of PC-relative relocations may overflow | |
17688 | the in-place relocatable field if recalculated against the start | |
17689 | address of the symbol's containing section. */ | |
17690 | if (HAVE_IN_PLACE_ADDENDS | |
df58fc94 | 17691 | && (fixp->fx_pcrel || jalr_reloc_p (fixp->fx_r_type))) |
1180b5a4 RS |
17692 | return 0; |
17693 | ||
252b5132 | 17694 | #ifdef OBJ_ELF |
b314ec0e RS |
17695 | /* R_MIPS16_26 relocations against non-MIPS16 functions might resolve |
17696 | to a floating-point stub. The same is true for non-R_MIPS16_26 | |
17697 | relocations against MIPS16 functions; in this case, the stub becomes | |
17698 | the function's canonical address. | |
17699 | ||
17700 | Floating-point stubs are stored in unique .mips16.call.* or | |
17701 | .mips16.fn.* sections. If a stub T for function F is in section S, | |
17702 | the first relocation in section S must be against F; this is how the | |
17703 | linker determines the target function. All relocations that might | |
17704 | resolve to T must also be against F. We therefore have the following | |
17705 | restrictions, which are given in an intentionally-redundant way: | |
17706 | ||
17707 | 1. We cannot reduce R_MIPS16_26 relocations against non-MIPS16 | |
17708 | symbols. | |
17709 | ||
17710 | 2. We cannot reduce a stub's relocations against non-MIPS16 symbols | |
17711 | if that stub might be used. | |
17712 | ||
17713 | 3. We cannot reduce non-R_MIPS16_26 relocations against MIPS16 | |
17714 | symbols. | |
17715 | ||
17716 | 4. We cannot reduce a stub's relocations against MIPS16 symbols if | |
17717 | that stub might be used. | |
17718 | ||
17719 | There is a further restriction: | |
17720 | ||
df58fc94 RS |
17721 | 5. We cannot reduce jump relocations (R_MIPS_26, R_MIPS16_26 or |
17722 | R_MICROMIPS_26_S1) against MIPS16 or microMIPS symbols on | |
17723 | targets with in-place addends; the relocation field cannot | |
b314ec0e RS |
17724 | encode the low bit. |
17725 | ||
df58fc94 RS |
17726 | For simplicity, we deal with (3)-(4) by not reducing _any_ relocation |
17727 | against a MIPS16 symbol. We deal with (5) by by not reducing any | |
17728 | such relocations on REL targets. | |
b314ec0e RS |
17729 | |
17730 | We deal with (1)-(2) by saying that, if there's a R_MIPS16_26 | |
17731 | relocation against some symbol R, no relocation against R may be | |
17732 | reduced. (Note that this deals with (2) as well as (1) because | |
17733 | relocations against global symbols will never be reduced on ELF | |
17734 | targets.) This approach is a little simpler than trying to detect | |
17735 | stub sections, and gives the "all or nothing" per-symbol consistency | |
17736 | that we have for MIPS16 symbols. */ | |
f43abd2b | 17737 | if (IS_ELF |
b314ec0e | 17738 | && fixp->fx_subsy == NULL |
30c09090 | 17739 | && (ELF_ST_IS_MIPS16 (S_GET_OTHER (fixp->fx_addsy)) |
df58fc94 RS |
17740 | || *symbol_get_tc (fixp->fx_addsy) |
17741 | || (HAVE_IN_PLACE_ADDENDS | |
17742 | && ELF_ST_IS_MICROMIPS (S_GET_OTHER (fixp->fx_addsy)) | |
17743 | && jmp_reloc_p (fixp->fx_r_type)))) | |
252b5132 RH |
17744 | return 0; |
17745 | #endif | |
a161fe53 | 17746 | |
252b5132 RH |
17747 | return 1; |
17748 | } | |
17749 | ||
17750 | /* Translate internal representation of relocation info to BFD target | |
17751 | format. */ | |
17752 | ||
17753 | arelent ** | |
17a2f251 | 17754 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
17755 | { |
17756 | static arelent *retval[4]; | |
17757 | arelent *reloc; | |
17758 | bfd_reloc_code_real_type code; | |
17759 | ||
4b0cff4e TS |
17760 | memset (retval, 0, sizeof(retval)); |
17761 | reloc = retval[0] = (arelent *) xcalloc (1, sizeof (arelent)); | |
49309057 ILT |
17762 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
17763 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
17764 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
17765 | ||
bad36eac DJ |
17766 | if (fixp->fx_pcrel) |
17767 | { | |
df58fc94 RS |
17768 | gas_assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2 |
17769 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
17770 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
17771 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
bad36eac DJ |
17772 | |
17773 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
17774 | Relocations want only the symbol offset. */ | |
17775 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
f43abd2b | 17776 | if (!IS_ELF) |
bad36eac DJ |
17777 | { |
17778 | /* A gruesome hack which is a result of the gruesome gas | |
17779 | reloc handling. What's worse, for COFF (as opposed to | |
17780 | ECOFF), we might need yet another copy of reloc->address. | |
17781 | See bfd_install_relocation. */ | |
17782 | reloc->addend += reloc->address; | |
17783 | } | |
17784 | } | |
17785 | else | |
17786 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 17787 | |
438c16b8 TS |
17788 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
17789 | entry to be used in the relocation's section offset. */ | |
17790 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
17791 | { |
17792 | reloc->address = reloc->addend; | |
17793 | reloc->addend = 0; | |
17794 | } | |
17795 | ||
252b5132 | 17796 | code = fixp->fx_r_type; |
252b5132 | 17797 | |
bad36eac | 17798 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
17799 | if (reloc->howto == NULL) |
17800 | { | |
17801 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
17802 | _("Can not represent %s relocation in this object file format"), | |
17803 | bfd_get_reloc_code_name (code)); | |
17804 | retval[0] = NULL; | |
17805 | } | |
17806 | ||
17807 | return retval; | |
17808 | } | |
17809 | ||
17810 | /* Relax a machine dependent frag. This returns the amount by which | |
17811 | the current size of the frag should change. */ | |
17812 | ||
17813 | int | |
17a2f251 | 17814 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 17815 | { |
4a6a3df4 AO |
17816 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17817 | { | |
17818 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
17819 | |
17820 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
17821 | |
17822 | return fragp->fr_var - old_var; | |
17823 | } | |
17824 | ||
df58fc94 RS |
17825 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17826 | { | |
17827 | offsetT old_var = fragp->fr_var; | |
17828 | offsetT new_var = 4; | |
17829 | ||
17830 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17831 | new_var = relaxed_micromips_16bit_branch_length (fragp, sec, TRUE); | |
17832 | if (new_var == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17833 | new_var = relaxed_micromips_32bit_branch_length (fragp, sec, TRUE); | |
17834 | fragp->fr_var = new_var; | |
17835 | ||
17836 | return new_var - old_var; | |
17837 | } | |
17838 | ||
252b5132 RH |
17839 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
17840 | return 0; | |
17841 | ||
c4e7957c | 17842 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
17843 | { |
17844 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17845 | return 0; | |
17846 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
17847 | return 2; | |
17848 | } | |
17849 | else | |
17850 | { | |
17851 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17852 | return 0; | |
17853 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
17854 | return -2; | |
17855 | } | |
17856 | ||
17857 | return 0; | |
17858 | } | |
17859 | ||
17860 | /* Convert a machine dependent frag. */ | |
17861 | ||
17862 | void | |
17a2f251 | 17863 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 17864 | { |
4a6a3df4 AO |
17865 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17866 | { | |
4d68580a | 17867 | char *buf; |
4a6a3df4 AO |
17868 | unsigned long insn; |
17869 | expressionS exp; | |
17870 | fixS *fixp; | |
b34976b6 | 17871 | |
4d68580a RS |
17872 | buf = fragp->fr_literal + fragp->fr_fix; |
17873 | insn = read_insn (buf); | |
b34976b6 | 17874 | |
4a6a3df4 AO |
17875 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
17876 | { | |
17877 | /* We generate a fixup instead of applying it right now | |
17878 | because, if there are linker relaxations, we're going to | |
17879 | need the relocations. */ | |
17880 | exp.X_op = O_symbol; | |
17881 | exp.X_add_symbol = fragp->fr_symbol; | |
17882 | exp.X_add_number = fragp->fr_offset; | |
17883 | ||
4d68580a RS |
17884 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, TRUE, |
17885 | BFD_RELOC_16_PCREL_S2); | |
4a6a3df4 AO |
17886 | fixp->fx_file = fragp->fr_file; |
17887 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 17888 | |
4d68580a | 17889 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
17890 | } |
17891 | else | |
17892 | { | |
17893 | int i; | |
17894 | ||
17895 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
5c4f07ba | 17896 | _("Relaxed out-of-range branch into a jump")); |
4a6a3df4 AO |
17897 | |
17898 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
17899 | goto uncond; | |
17900 | ||
17901 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17902 | { | |
17903 | /* Reverse the branch. */ | |
17904 | switch ((insn >> 28) & 0xf) | |
17905 | { | |
17906 | case 4: | |
17907 | /* bc[0-3][tf]l? and bc1any[24][ft] instructions can | |
17908 | have the condition reversed by tweaking a single | |
17909 | bit, and their opcodes all have 0x4???????. */ | |
9c2799c2 | 17910 | gas_assert ((insn & 0xf1000000) == 0x41000000); |
4a6a3df4 AO |
17911 | insn ^= 0x00010000; |
17912 | break; | |
17913 | ||
17914 | case 0: | |
17915 | /* bltz 0x04000000 bgez 0x04010000 | |
54f4ddb3 | 17916 | bltzal 0x04100000 bgezal 0x04110000 */ |
9c2799c2 | 17917 | gas_assert ((insn & 0xfc0e0000) == 0x04000000); |
4a6a3df4 AO |
17918 | insn ^= 0x00010000; |
17919 | break; | |
b34976b6 | 17920 | |
4a6a3df4 AO |
17921 | case 1: |
17922 | /* beq 0x10000000 bne 0x14000000 | |
54f4ddb3 | 17923 | blez 0x18000000 bgtz 0x1c000000 */ |
4a6a3df4 AO |
17924 | insn ^= 0x04000000; |
17925 | break; | |
17926 | ||
17927 | default: | |
17928 | abort (); | |
17929 | } | |
17930 | } | |
17931 | ||
17932 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
17933 | { | |
17934 | /* Clear the and-link bit. */ | |
9c2799c2 | 17935 | gas_assert ((insn & 0xfc1c0000) == 0x04100000); |
4a6a3df4 | 17936 | |
54f4ddb3 TS |
17937 | /* bltzal 0x04100000 bgezal 0x04110000 |
17938 | bltzall 0x04120000 bgezall 0x04130000 */ | |
4a6a3df4 AO |
17939 | insn &= ~0x00100000; |
17940 | } | |
17941 | ||
17942 | /* Branch over the branch (if the branch was likely) or the | |
17943 | full jump (not likely case). Compute the offset from the | |
17944 | current instruction to branch to. */ | |
17945 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17946 | i = 16; | |
17947 | else | |
17948 | { | |
17949 | /* How many bytes in instructions we've already emitted? */ | |
4d68580a | 17950 | i = buf - fragp->fr_literal - fragp->fr_fix; |
4a6a3df4 AO |
17951 | /* How many bytes in instructions from here to the end? */ |
17952 | i = fragp->fr_var - i; | |
17953 | } | |
17954 | /* Convert to instruction count. */ | |
17955 | i >>= 2; | |
17956 | /* Branch counts from the next instruction. */ | |
b34976b6 | 17957 | i--; |
4a6a3df4 AO |
17958 | insn |= i; |
17959 | /* Branch over the jump. */ | |
4d68580a | 17960 | buf = write_insn (buf, insn); |
4a6a3df4 | 17961 | |
54f4ddb3 | 17962 | /* nop */ |
4d68580a | 17963 | buf = write_insn (buf, 0); |
4a6a3df4 AO |
17964 | |
17965 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17966 | { | |
17967 | /* beql $0, $0, 2f */ | |
17968 | insn = 0x50000000; | |
17969 | /* Compute the PC offset from the current instruction to | |
17970 | the end of the variable frag. */ | |
17971 | /* How many bytes in instructions we've already emitted? */ | |
4d68580a | 17972 | i = buf - fragp->fr_literal - fragp->fr_fix; |
4a6a3df4 AO |
17973 | /* How many bytes in instructions from here to the end? */ |
17974 | i = fragp->fr_var - i; | |
17975 | /* Convert to instruction count. */ | |
17976 | i >>= 2; | |
17977 | /* Don't decrement i, because we want to branch over the | |
17978 | delay slot. */ | |
4a6a3df4 | 17979 | insn |= i; |
4a6a3df4 | 17980 | |
4d68580a RS |
17981 | buf = write_insn (buf, insn); |
17982 | buf = write_insn (buf, 0); | |
4a6a3df4 AO |
17983 | } |
17984 | ||
17985 | uncond: | |
17986 | if (mips_pic == NO_PIC) | |
17987 | { | |
17988 | /* j or jal. */ | |
17989 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
17990 | ? 0x0c000000 : 0x08000000); | |
17991 | exp.X_op = O_symbol; | |
17992 | exp.X_add_symbol = fragp->fr_symbol; | |
17993 | exp.X_add_number = fragp->fr_offset; | |
17994 | ||
4d68580a RS |
17995 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
17996 | FALSE, BFD_RELOC_MIPS_JMP); | |
4a6a3df4 AO |
17997 | fixp->fx_file = fragp->fr_file; |
17998 | fixp->fx_line = fragp->fr_line; | |
17999 | ||
4d68580a | 18000 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
18001 | } |
18002 | else | |
18003 | { | |
66b3e8da MR |
18004 | unsigned long at = RELAX_BRANCH_AT (fragp->fr_subtype); |
18005 | ||
4a6a3df4 | 18006 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ |
66b3e8da MR |
18007 | insn = HAVE_64BIT_ADDRESSES ? 0xdf800000 : 0x8f800000; |
18008 | insn |= at << OP_SH_RT; | |
4a6a3df4 AO |
18009 | exp.X_op = O_symbol; |
18010 | exp.X_add_symbol = fragp->fr_symbol; | |
18011 | exp.X_add_number = fragp->fr_offset; | |
18012 | ||
18013 | if (fragp->fr_offset) | |
18014 | { | |
18015 | exp.X_add_symbol = make_expr_symbol (&exp); | |
18016 | exp.X_add_number = 0; | |
18017 | } | |
18018 | ||
4d68580a RS |
18019 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
18020 | FALSE, BFD_RELOC_MIPS_GOT16); | |
4a6a3df4 AO |
18021 | fixp->fx_file = fragp->fr_file; |
18022 | fixp->fx_line = fragp->fr_line; | |
18023 | ||
4d68580a | 18024 | buf = write_insn (buf, insn); |
b34976b6 | 18025 | |
4a6a3df4 | 18026 | if (mips_opts.isa == ISA_MIPS1) |
4d68580a RS |
18027 | /* nop */ |
18028 | buf = write_insn (buf, 0); | |
4a6a3df4 AO |
18029 | |
18030 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
66b3e8da MR |
18031 | insn = HAVE_64BIT_ADDRESSES ? 0x64000000 : 0x24000000; |
18032 | insn |= at << OP_SH_RS | at << OP_SH_RT; | |
4a6a3df4 | 18033 | |
4d68580a RS |
18034 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, |
18035 | FALSE, BFD_RELOC_LO16); | |
4a6a3df4 AO |
18036 | fixp->fx_file = fragp->fr_file; |
18037 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 18038 | |
4d68580a | 18039 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
18040 | |
18041 | /* j(al)r $at. */ | |
18042 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
66b3e8da | 18043 | insn = 0x0000f809; |
4a6a3df4 | 18044 | else |
66b3e8da MR |
18045 | insn = 0x00000008; |
18046 | insn |= at << OP_SH_RS; | |
4a6a3df4 | 18047 | |
4d68580a | 18048 | buf = write_insn (buf, insn); |
4a6a3df4 AO |
18049 | } |
18050 | } | |
18051 | ||
4a6a3df4 | 18052 | fragp->fr_fix += fragp->fr_var; |
4d68580a | 18053 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); |
4a6a3df4 AO |
18054 | return; |
18055 | } | |
18056 | ||
df58fc94 RS |
18057 | /* Relax microMIPS branches. */ |
18058 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) | |
18059 | { | |
4d68580a | 18060 | char *buf = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
18061 | bfd_boolean compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); |
18062 | bfd_boolean al = RELAX_MICROMIPS_LINK (fragp->fr_subtype); | |
18063 | int type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
2309ddf2 | 18064 | bfd_boolean short_ds; |
df58fc94 RS |
18065 | unsigned long insn; |
18066 | expressionS exp; | |
18067 | fixS *fixp; | |
18068 | ||
18069 | exp.X_op = O_symbol; | |
18070 | exp.X_add_symbol = fragp->fr_symbol; | |
18071 | exp.X_add_number = fragp->fr_offset; | |
18072 | ||
18073 | fragp->fr_fix += fragp->fr_var; | |
18074 | ||
18075 | /* Handle 16-bit branches that fit or are forced to fit. */ | |
18076 | if (type != 0 && !RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
18077 | { | |
18078 | /* We generate a fixup instead of applying it right now, | |
18079 | because if there is linker relaxation, we're going to | |
18080 | need the relocations. */ | |
18081 | if (type == 'D') | |
4d68580a | 18082 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 2, &exp, TRUE, |
df58fc94 RS |
18083 | BFD_RELOC_MICROMIPS_10_PCREL_S1); |
18084 | else if (type == 'E') | |
4d68580a | 18085 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 2, &exp, TRUE, |
df58fc94 RS |
18086 | BFD_RELOC_MICROMIPS_7_PCREL_S1); |
18087 | else | |
18088 | abort (); | |
18089 | ||
18090 | fixp->fx_file = fragp->fr_file; | |
18091 | fixp->fx_line = fragp->fr_line; | |
18092 | ||
18093 | /* These relocations can have an addend that won't fit in | |
18094 | 2 octets. */ | |
18095 | fixp->fx_no_overflow = 1; | |
18096 | ||
18097 | return; | |
18098 | } | |
18099 | ||
2309ddf2 | 18100 | /* Handle 32-bit branches that fit or are forced to fit. */ |
df58fc94 RS |
18101 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) |
18102 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
18103 | { | |
18104 | /* We generate a fixup instead of applying it right now, | |
18105 | because if there is linker relaxation, we're going to | |
18106 | need the relocations. */ | |
4d68580a RS |
18107 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, TRUE, |
18108 | BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
df58fc94 RS |
18109 | fixp->fx_file = fragp->fr_file; |
18110 | fixp->fx_line = fragp->fr_line; | |
18111 | ||
18112 | if (type == 0) | |
18113 | return; | |
18114 | } | |
18115 | ||
18116 | /* Relax 16-bit branches to 32-bit branches. */ | |
18117 | if (type != 0) | |
18118 | { | |
4d68580a | 18119 | insn = read_compressed_insn (buf, 2); |
df58fc94 RS |
18120 | |
18121 | if ((insn & 0xfc00) == 0xcc00) /* b16 */ | |
18122 | insn = 0x94000000; /* beq */ | |
18123 | else if ((insn & 0xdc00) == 0x8c00) /* beqz16/bnez16 */ | |
18124 | { | |
18125 | unsigned long regno; | |
18126 | ||
18127 | regno = (insn >> MICROMIPSOP_SH_MD) & MICROMIPSOP_MASK_MD; | |
18128 | regno = micromips_to_32_reg_d_map [regno]; | |
18129 | insn = ((insn & 0x2000) << 16) | 0x94000000; /* beq/bne */ | |
18130 | insn |= regno << MICROMIPSOP_SH_RS; | |
18131 | } | |
18132 | else | |
18133 | abort (); | |
18134 | ||
18135 | /* Nothing else to do, just write it out. */ | |
18136 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) | |
18137 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
18138 | { | |
4d68580a RS |
18139 | buf = write_compressed_insn (buf, insn, 4); |
18140 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); | |
df58fc94 RS |
18141 | return; |
18142 | } | |
18143 | } | |
18144 | else | |
4d68580a | 18145 | insn = read_compressed_insn (buf, 4); |
df58fc94 RS |
18146 | |
18147 | /* Relax 32-bit branches to a sequence of instructions. */ | |
18148 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
18149 | _("Relaxed out-of-range branch into a jump")); | |
18150 | ||
2309ddf2 MR |
18151 | /* Set the short-delay-slot bit. */ |
18152 | short_ds = al && (insn & 0x02000000) != 0; | |
df58fc94 RS |
18153 | |
18154 | if (!RELAX_MICROMIPS_UNCOND (fragp->fr_subtype)) | |
18155 | { | |
18156 | symbolS *l; | |
18157 | ||
18158 | /* Reverse the branch. */ | |
18159 | if ((insn & 0xfc000000) == 0x94000000 /* beq */ | |
18160 | || (insn & 0xfc000000) == 0xb4000000) /* bne */ | |
18161 | insn ^= 0x20000000; | |
18162 | else if ((insn & 0xffe00000) == 0x40000000 /* bltz */ | |
18163 | || (insn & 0xffe00000) == 0x40400000 /* bgez */ | |
18164 | || (insn & 0xffe00000) == 0x40800000 /* blez */ | |
18165 | || (insn & 0xffe00000) == 0x40c00000 /* bgtz */ | |
18166 | || (insn & 0xffe00000) == 0x40a00000 /* bnezc */ | |
18167 | || (insn & 0xffe00000) == 0x40e00000 /* beqzc */ | |
18168 | || (insn & 0xffe00000) == 0x40200000 /* bltzal */ | |
18169 | || (insn & 0xffe00000) == 0x40600000 /* bgezal */ | |
18170 | || (insn & 0xffe00000) == 0x42200000 /* bltzals */ | |
18171 | || (insn & 0xffe00000) == 0x42600000) /* bgezals */ | |
18172 | insn ^= 0x00400000; | |
18173 | else if ((insn & 0xffe30000) == 0x43800000 /* bc1f */ | |
18174 | || (insn & 0xffe30000) == 0x43a00000 /* bc1t */ | |
18175 | || (insn & 0xffe30000) == 0x42800000 /* bc2f */ | |
18176 | || (insn & 0xffe30000) == 0x42a00000) /* bc2t */ | |
18177 | insn ^= 0x00200000; | |
18178 | else | |
18179 | abort (); | |
18180 | ||
18181 | if (al) | |
18182 | { | |
18183 | /* Clear the and-link and short-delay-slot bits. */ | |
18184 | gas_assert ((insn & 0xfda00000) == 0x40200000); | |
18185 | ||
18186 | /* bltzal 0x40200000 bgezal 0x40600000 */ | |
18187 | /* bltzals 0x42200000 bgezals 0x42600000 */ | |
18188 | insn &= ~0x02200000; | |
18189 | } | |
18190 | ||
18191 | /* Make a label at the end for use with the branch. */ | |
18192 | l = symbol_new (micromips_label_name (), asec, fragp->fr_fix, fragp); | |
18193 | micromips_label_inc (); | |
18194 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
18195 | if (IS_ELF) | |
18196 | S_SET_OTHER (l, ELF_ST_SET_MICROMIPS (S_GET_OTHER (l))); | |
18197 | #endif | |
18198 | ||
18199 | /* Refer to it. */ | |
4d68580a RS |
18200 | fixp = fix_new (fragp, buf - fragp->fr_literal, 4, l, 0, TRUE, |
18201 | BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
df58fc94 RS |
18202 | fixp->fx_file = fragp->fr_file; |
18203 | fixp->fx_line = fragp->fr_line; | |
18204 | ||
18205 | /* Branch over the jump. */ | |
4d68580a | 18206 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 | 18207 | if (!compact) |
4d68580a RS |
18208 | /* nop */ |
18209 | buf = write_compressed_insn (buf, 0x0c00, 2); | |
df58fc94 RS |
18210 | } |
18211 | ||
18212 | if (mips_pic == NO_PIC) | |
18213 | { | |
2309ddf2 MR |
18214 | unsigned long jal = short_ds ? 0x74000000 : 0xf4000000; /* jal/s */ |
18215 | ||
df58fc94 RS |
18216 | /* j/jal/jals <sym> R_MICROMIPS_26_S1 */ |
18217 | insn = al ? jal : 0xd4000000; | |
18218 | ||
4d68580a RS |
18219 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
18220 | BFD_RELOC_MICROMIPS_JMP); | |
df58fc94 RS |
18221 | fixp->fx_file = fragp->fr_file; |
18222 | fixp->fx_line = fragp->fr_line; | |
18223 | ||
4d68580a | 18224 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 | 18225 | if (compact) |
4d68580a RS |
18226 | /* nop */ |
18227 | buf = write_compressed_insn (buf, 0x0c00, 2); | |
df58fc94 RS |
18228 | } |
18229 | else | |
18230 | { | |
18231 | unsigned long at = RELAX_MICROMIPS_AT (fragp->fr_subtype); | |
2309ddf2 MR |
18232 | unsigned long jalr = short_ds ? 0x45e0 : 0x45c0; /* jalr/s */ |
18233 | unsigned long jr = compact ? 0x45a0 : 0x4580; /* jr/c */ | |
df58fc94 RS |
18234 | |
18235 | /* lw/ld $at, <sym>($gp) R_MICROMIPS_GOT16 */ | |
18236 | insn = HAVE_64BIT_ADDRESSES ? 0xdc1c0000 : 0xfc1c0000; | |
18237 | insn |= at << MICROMIPSOP_SH_RT; | |
18238 | ||
18239 | if (exp.X_add_number) | |
18240 | { | |
18241 | exp.X_add_symbol = make_expr_symbol (&exp); | |
18242 | exp.X_add_number = 0; | |
18243 | } | |
18244 | ||
4d68580a RS |
18245 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
18246 | BFD_RELOC_MICROMIPS_GOT16); | |
df58fc94 RS |
18247 | fixp->fx_file = fragp->fr_file; |
18248 | fixp->fx_line = fragp->fr_line; | |
18249 | ||
4d68580a | 18250 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 RS |
18251 | |
18252 | /* d/addiu $at, $at, <sym> R_MICROMIPS_LO16 */ | |
18253 | insn = HAVE_64BIT_ADDRESSES ? 0x5c000000 : 0x30000000; | |
18254 | insn |= at << MICROMIPSOP_SH_RT | at << MICROMIPSOP_SH_RS; | |
18255 | ||
4d68580a RS |
18256 | fixp = fix_new_exp (fragp, buf - fragp->fr_literal, 4, &exp, FALSE, |
18257 | BFD_RELOC_MICROMIPS_LO16); | |
df58fc94 RS |
18258 | fixp->fx_file = fragp->fr_file; |
18259 | fixp->fx_line = fragp->fr_line; | |
18260 | ||
4d68580a | 18261 | buf = write_compressed_insn (buf, insn, 4); |
df58fc94 RS |
18262 | |
18263 | /* jr/jrc/jalr/jalrs $at */ | |
18264 | insn = al ? jalr : jr; | |
18265 | insn |= at << MICROMIPSOP_SH_MJ; | |
18266 | ||
4d68580a | 18267 | buf = write_compressed_insn (buf, insn, 2); |
df58fc94 RS |
18268 | } |
18269 | ||
4d68580a | 18270 | gas_assert (buf == fragp->fr_literal + fragp->fr_fix); |
df58fc94 RS |
18271 | return; |
18272 | } | |
18273 | ||
252b5132 RH |
18274 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
18275 | { | |
18276 | int type; | |
3994f87e | 18277 | const struct mips16_immed_operand *op; |
252b5132 | 18278 | offsetT val; |
5c04167a RS |
18279 | char *buf; |
18280 | unsigned int user_length, length; | |
252b5132 | 18281 | unsigned long insn; |
5c04167a | 18282 | bfd_boolean ext; |
252b5132 RH |
18283 | |
18284 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
18285 | op = mips16_immed_operands; | |
18286 | while (op->type != type) | |
18287 | ++op; | |
18288 | ||
5c04167a | 18289 | ext = RELAX_MIPS16_EXTENDED (fragp->fr_subtype); |
5f5f22c0 | 18290 | val = resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
18291 | if (op->pcrel) |
18292 | { | |
18293 | addressT addr; | |
18294 | ||
18295 | addr = fragp->fr_address + fragp->fr_fix; | |
18296 | ||
18297 | /* The rules for the base address of a PC relative reloc are | |
18298 | complicated; see mips16_extended_frag. */ | |
18299 | if (type == 'p' || type == 'q') | |
18300 | { | |
18301 | addr += 2; | |
18302 | if (ext) | |
18303 | addr += 2; | |
18304 | /* Ignore the low bit in the target, since it will be | |
18305 | set for a text label. */ | |
18306 | if ((val & 1) != 0) | |
18307 | --val; | |
18308 | } | |
18309 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
18310 | addr -= 4; | |
18311 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
18312 | addr -= 2; | |
18313 | ||
18314 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
18315 | val -= addr; | |
18316 | ||
18317 | /* Make sure the section winds up with the alignment we have | |
18318 | assumed. */ | |
18319 | if (op->shift > 0) | |
18320 | record_alignment (asec, op->shift); | |
18321 | } | |
18322 | ||
18323 | if (ext | |
18324 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
18325 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
18326 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
18327 | _("extended instruction in delay slot")); | |
18328 | ||
5c04167a | 18329 | buf = fragp->fr_literal + fragp->fr_fix; |
252b5132 | 18330 | |
4d68580a | 18331 | insn = read_compressed_insn (buf, 2); |
5c04167a RS |
18332 | if (ext) |
18333 | insn |= MIPS16_EXTEND; | |
252b5132 | 18334 | |
5c04167a RS |
18335 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) |
18336 | user_length = 4; | |
18337 | else if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
18338 | user_length = 2; | |
18339 | else | |
18340 | user_length = 0; | |
18341 | ||
43c0598f | 18342 | mips16_immed (fragp->fr_file, fragp->fr_line, type, |
c150d1d2 | 18343 | BFD_RELOC_UNUSED, val, user_length, &insn); |
252b5132 | 18344 | |
5c04167a RS |
18345 | length = (ext ? 4 : 2); |
18346 | gas_assert (mips16_opcode_length (insn) == length); | |
18347 | write_compressed_insn (buf, insn, length); | |
18348 | fragp->fr_fix += length; | |
252b5132 RH |
18349 | } |
18350 | else | |
18351 | { | |
df58fc94 RS |
18352 | relax_substateT subtype = fragp->fr_subtype; |
18353 | bfd_boolean second_longer = (subtype & RELAX_SECOND_LONGER) != 0; | |
18354 | bfd_boolean use_second = (subtype & RELAX_USE_SECOND) != 0; | |
4d7206a2 RS |
18355 | int first, second; |
18356 | fixS *fixp; | |
252b5132 | 18357 | |
df58fc94 RS |
18358 | first = RELAX_FIRST (subtype); |
18359 | second = RELAX_SECOND (subtype); | |
4d7206a2 | 18360 | fixp = (fixS *) fragp->fr_opcode; |
252b5132 | 18361 | |
df58fc94 RS |
18362 | /* If the delay slot chosen does not match the size of the instruction, |
18363 | then emit a warning. */ | |
18364 | if ((!use_second && (subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0) | |
18365 | || (use_second && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0)) | |
18366 | { | |
18367 | relax_substateT s; | |
18368 | const char *msg; | |
18369 | ||
18370 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
18371 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
18372 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
18373 | msg = macro_warning (s); | |
18374 | if (msg != NULL) | |
db9b2be4 | 18375 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 RS |
18376 | subtype &= ~s; |
18377 | } | |
18378 | ||
584892a6 | 18379 | /* Possibly emit a warning if we've chosen the longer option. */ |
df58fc94 | 18380 | if (use_second == second_longer) |
584892a6 | 18381 | { |
df58fc94 RS |
18382 | relax_substateT s; |
18383 | const char *msg; | |
18384 | ||
18385 | s = (subtype | |
18386 | & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT)); | |
18387 | msg = macro_warning (s); | |
18388 | if (msg != NULL) | |
db9b2be4 | 18389 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 | 18390 | subtype &= ~s; |
584892a6 RS |
18391 | } |
18392 | ||
4d7206a2 RS |
18393 | /* Go through all the fixups for the first sequence. Disable them |
18394 | (by marking them as done) if we're going to use the second | |
18395 | sequence instead. */ | |
18396 | while (fixp | |
18397 | && fixp->fx_frag == fragp | |
18398 | && fixp->fx_where < fragp->fr_fix - second) | |
18399 | { | |
df58fc94 | 18400 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18401 | fixp->fx_done = 1; |
18402 | fixp = fixp->fx_next; | |
18403 | } | |
252b5132 | 18404 | |
4d7206a2 RS |
18405 | /* Go through the fixups for the second sequence. Disable them if |
18406 | we're going to use the first sequence, otherwise adjust their | |
18407 | addresses to account for the relaxation. */ | |
18408 | while (fixp && fixp->fx_frag == fragp) | |
18409 | { | |
df58fc94 | 18410 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18411 | fixp->fx_where -= first; |
18412 | else | |
18413 | fixp->fx_done = 1; | |
18414 | fixp = fixp->fx_next; | |
18415 | } | |
18416 | ||
18417 | /* Now modify the frag contents. */ | |
df58fc94 | 18418 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18419 | { |
18420 | char *start; | |
18421 | ||
18422 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
18423 | memmove (start, start + first, second); | |
18424 | fragp->fr_fix -= first; | |
18425 | } | |
18426 | else | |
18427 | fragp->fr_fix -= second; | |
252b5132 RH |
18428 | } |
18429 | } | |
18430 | ||
18431 | #ifdef OBJ_ELF | |
18432 | ||
18433 | /* This function is called after the relocs have been generated. | |
18434 | We've been storing mips16 text labels as odd. Here we convert them | |
18435 | back to even for the convenience of the debugger. */ | |
18436 | ||
18437 | void | |
17a2f251 | 18438 | mips_frob_file_after_relocs (void) |
252b5132 RH |
18439 | { |
18440 | asymbol **syms; | |
18441 | unsigned int count, i; | |
18442 | ||
f43abd2b | 18443 | if (!IS_ELF) |
252b5132 RH |
18444 | return; |
18445 | ||
18446 | syms = bfd_get_outsymbols (stdoutput); | |
18447 | count = bfd_get_symcount (stdoutput); | |
18448 | for (i = 0; i < count; i++, syms++) | |
df58fc94 RS |
18449 | if (ELF_ST_IS_COMPRESSED (elf_symbol (*syms)->internal_elf_sym.st_other) |
18450 | && ((*syms)->value & 1) != 0) | |
18451 | { | |
18452 | (*syms)->value &= ~1; | |
18453 | /* If the symbol has an odd size, it was probably computed | |
18454 | incorrectly, so adjust that as well. */ | |
18455 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
18456 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
18457 | } | |
252b5132 RH |
18458 | } |
18459 | ||
18460 | #endif | |
18461 | ||
a1facbec MR |
18462 | /* This function is called whenever a label is defined, including fake |
18463 | labels instantiated off the dot special symbol. It is used when | |
18464 | handling branch delays; if a branch has a label, we assume we cannot | |
18465 | move it. This also bumps the value of the symbol by 1 in compressed | |
18466 | code. */ | |
252b5132 | 18467 | |
e1b47bd5 | 18468 | static void |
a1facbec | 18469 | mips_record_label (symbolS *sym) |
252b5132 | 18470 | { |
a8dbcb85 | 18471 | segment_info_type *si = seg_info (now_seg); |
252b5132 RH |
18472 | struct insn_label_list *l; |
18473 | ||
18474 | if (free_insn_labels == NULL) | |
18475 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
18476 | else | |
18477 | { | |
18478 | l = free_insn_labels; | |
18479 | free_insn_labels = l->next; | |
18480 | } | |
18481 | ||
18482 | l->label = sym; | |
a8dbcb85 TS |
18483 | l->next = si->label_list; |
18484 | si->label_list = l; | |
a1facbec | 18485 | } |
07a53e5c | 18486 | |
a1facbec MR |
18487 | /* This function is called as tc_frob_label() whenever a label is defined |
18488 | and adds a DWARF-2 record we only want for true labels. */ | |
18489 | ||
18490 | void | |
18491 | mips_define_label (symbolS *sym) | |
18492 | { | |
18493 | mips_record_label (sym); | |
07a53e5c RH |
18494 | #ifdef OBJ_ELF |
18495 | dwarf2_emit_label (sym); | |
18496 | #endif | |
252b5132 | 18497 | } |
e1b47bd5 RS |
18498 | |
18499 | /* This function is called by tc_new_dot_label whenever a new dot symbol | |
18500 | is defined. */ | |
18501 | ||
18502 | void | |
18503 | mips_add_dot_label (symbolS *sym) | |
18504 | { | |
18505 | mips_record_label (sym); | |
18506 | if (mips_assembling_insn && HAVE_CODE_COMPRESSION) | |
18507 | mips_compressed_mark_label (sym); | |
18508 | } | |
252b5132 RH |
18509 | \f |
18510 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
18511 | ||
18512 | /* Some special processing for a MIPS ELF file. */ | |
18513 | ||
18514 | void | |
17a2f251 | 18515 | mips_elf_final_processing (void) |
252b5132 RH |
18516 | { |
18517 | /* Write out the register information. */ | |
316f5878 | 18518 | if (mips_abi != N64_ABI) |
252b5132 RH |
18519 | { |
18520 | Elf32_RegInfo s; | |
18521 | ||
18522 | s.ri_gprmask = mips_gprmask; | |
18523 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18524 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18525 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18526 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18527 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18528 | ||
18529 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
18530 | ((Elf32_External_RegInfo *) | |
18531 | mips_regmask_frag)); | |
18532 | } | |
18533 | else | |
18534 | { | |
18535 | Elf64_Internal_RegInfo s; | |
18536 | ||
18537 | s.ri_gprmask = mips_gprmask; | |
18538 | s.ri_pad = 0; | |
18539 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18540 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18541 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18542 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18543 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18544 | ||
18545 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
18546 | ((Elf64_External_RegInfo *) | |
18547 | mips_regmask_frag)); | |
18548 | } | |
18549 | ||
18550 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
18551 | sort of BFD interface for this. */ | |
18552 | if (mips_any_noreorder) | |
18553 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
18554 | if (mips_pic != NO_PIC) | |
143d77c5 | 18555 | { |
8b828383 | 18556 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
18557 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
18558 | } | |
18559 | if (mips_abicalls) | |
18560 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 18561 | |
98d3f06f | 18562 | /* Set MIPS ELF flags for ASEs. */ |
74cd071d CF |
18563 | /* We may need to define a new flag for DSP ASE, and set this flag when |
18564 | file_ase_dsp is true. */ | |
8b082fb1 | 18565 | /* Same for DSP R2. */ |
ef2e4d86 CF |
18566 | /* We may need to define a new flag for MT ASE, and set this flag when |
18567 | file_ase_mt is true. */ | |
a4672219 TS |
18568 | if (file_ase_mips16) |
18569 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
df58fc94 RS |
18570 | if (file_ase_micromips) |
18571 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MICROMIPS; | |
1f25f5d3 CD |
18572 | #if 0 /* XXX FIXME */ |
18573 | if (file_ase_mips3d) | |
18574 | elf_elfheader (stdoutput)->e_flags |= ???; | |
18575 | #endif | |
deec1734 CD |
18576 | if (file_ase_mdmx) |
18577 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 18578 | |
bdaaa2e1 | 18579 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 18580 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 18581 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 18582 | else if (mips_abi == O64_ABI) |
252b5132 | 18583 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 18584 | else if (mips_abi == EABI_ABI) |
252b5132 | 18585 | { |
316f5878 | 18586 | if (!file_mips_gp32) |
252b5132 RH |
18587 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
18588 | else | |
18589 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
18590 | } | |
316f5878 | 18591 | else if (mips_abi == N32_ABI) |
be00bddd TS |
18592 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
18593 | ||
c9914766 | 18594 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
18595 | |
18596 | if (mips_32bitmode) | |
18597 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 TS |
18598 | |
18599 | #if 0 /* XXX FIXME */ | |
18600 | /* 32 bit code with 64 bit FP registers. */ | |
18601 | if (!file_mips_fp32 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
18602 | elf_elfheader (stdoutput)->e_flags |= ???; | |
18603 | #endif | |
252b5132 RH |
18604 | } |
18605 | ||
18606 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
18607 | \f | |
beae10d5 | 18608 | typedef struct proc { |
9b2f1d35 EC |
18609 | symbolS *func_sym; |
18610 | symbolS *func_end_sym; | |
beae10d5 KH |
18611 | unsigned long reg_mask; |
18612 | unsigned long reg_offset; | |
18613 | unsigned long fpreg_mask; | |
18614 | unsigned long fpreg_offset; | |
18615 | unsigned long frame_offset; | |
18616 | unsigned long frame_reg; | |
18617 | unsigned long pc_reg; | |
18618 | } procS; | |
252b5132 RH |
18619 | |
18620 | static procS cur_proc; | |
18621 | static procS *cur_proc_ptr; | |
18622 | static int numprocs; | |
18623 | ||
df58fc94 RS |
18624 | /* Implement NOP_OPCODE. We encode a MIPS16 nop as "1", a microMIPS nop |
18625 | as "2", and a normal nop as "0". */ | |
18626 | ||
18627 | #define NOP_OPCODE_MIPS 0 | |
18628 | #define NOP_OPCODE_MIPS16 1 | |
18629 | #define NOP_OPCODE_MICROMIPS 2 | |
742a56fe RS |
18630 | |
18631 | char | |
18632 | mips_nop_opcode (void) | |
18633 | { | |
df58fc94 RS |
18634 | if (seg_info (now_seg)->tc_segment_info_data.micromips) |
18635 | return NOP_OPCODE_MICROMIPS; | |
18636 | else if (seg_info (now_seg)->tc_segment_info_data.mips16) | |
18637 | return NOP_OPCODE_MIPS16; | |
18638 | else | |
18639 | return NOP_OPCODE_MIPS; | |
742a56fe RS |
18640 | } |
18641 | ||
df58fc94 RS |
18642 | /* Fill in an rs_align_code fragment. Unlike elsewhere we want to use |
18643 | 32-bit microMIPS NOPs here (if applicable). */ | |
a19d8eb0 | 18644 | |
0a9ef439 | 18645 | void |
17a2f251 | 18646 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 18647 | { |
df58fc94 | 18648 | char nop_opcode; |
742a56fe | 18649 | char *p; |
c67a084a NC |
18650 | int bytes, size, excess; |
18651 | valueT opcode; | |
742a56fe | 18652 | |
0a9ef439 RH |
18653 | if (fragp->fr_type != rs_align_code) |
18654 | return; | |
18655 | ||
742a56fe | 18656 | p = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
18657 | nop_opcode = *p; |
18658 | switch (nop_opcode) | |
a19d8eb0 | 18659 | { |
df58fc94 RS |
18660 | case NOP_OPCODE_MICROMIPS: |
18661 | opcode = micromips_nop32_insn.insn_opcode; | |
18662 | size = 4; | |
18663 | break; | |
18664 | case NOP_OPCODE_MIPS16: | |
c67a084a NC |
18665 | opcode = mips16_nop_insn.insn_opcode; |
18666 | size = 2; | |
df58fc94 RS |
18667 | break; |
18668 | case NOP_OPCODE_MIPS: | |
18669 | default: | |
c67a084a NC |
18670 | opcode = nop_insn.insn_opcode; |
18671 | size = 4; | |
df58fc94 | 18672 | break; |
c67a084a | 18673 | } |
a19d8eb0 | 18674 | |
c67a084a NC |
18675 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
18676 | excess = bytes % size; | |
df58fc94 RS |
18677 | |
18678 | /* Handle the leading part if we're not inserting a whole number of | |
18679 | instructions, and make it the end of the fixed part of the frag. | |
18680 | Try to fit in a short microMIPS NOP if applicable and possible, | |
18681 | and use zeroes otherwise. */ | |
18682 | gas_assert (excess < 4); | |
18683 | fragp->fr_fix += excess; | |
18684 | switch (excess) | |
c67a084a | 18685 | { |
df58fc94 RS |
18686 | case 3: |
18687 | *p++ = '\0'; | |
18688 | /* Fall through. */ | |
18689 | case 2: | |
18690 | if (nop_opcode == NOP_OPCODE_MICROMIPS) | |
18691 | { | |
4d68580a | 18692 | p = write_compressed_insn (p, micromips_nop16_insn.insn_opcode, 2); |
df58fc94 RS |
18693 | break; |
18694 | } | |
18695 | *p++ = '\0'; | |
18696 | /* Fall through. */ | |
18697 | case 1: | |
18698 | *p++ = '\0'; | |
18699 | /* Fall through. */ | |
18700 | case 0: | |
18701 | break; | |
a19d8eb0 | 18702 | } |
c67a084a NC |
18703 | |
18704 | md_number_to_chars (p, opcode, size); | |
18705 | fragp->fr_var = size; | |
a19d8eb0 CP |
18706 | } |
18707 | ||
252b5132 | 18708 | static void |
17a2f251 | 18709 | md_obj_begin (void) |
252b5132 RH |
18710 | { |
18711 | } | |
18712 | ||
18713 | static void | |
17a2f251 | 18714 | md_obj_end (void) |
252b5132 | 18715 | { |
54f4ddb3 | 18716 | /* Check for premature end, nesting errors, etc. */ |
252b5132 | 18717 | if (cur_proc_ptr) |
9a41af64 | 18718 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
18719 | } |
18720 | ||
18721 | static long | |
17a2f251 | 18722 | get_number (void) |
252b5132 RH |
18723 | { |
18724 | int negative = 0; | |
18725 | long val = 0; | |
18726 | ||
18727 | if (*input_line_pointer == '-') | |
18728 | { | |
18729 | ++input_line_pointer; | |
18730 | negative = 1; | |
18731 | } | |
3882b010 | 18732 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 18733 | as_bad (_("expected simple number")); |
252b5132 RH |
18734 | if (input_line_pointer[0] == '0') |
18735 | { | |
18736 | if (input_line_pointer[1] == 'x') | |
18737 | { | |
18738 | input_line_pointer += 2; | |
3882b010 | 18739 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
18740 | { |
18741 | val <<= 4; | |
18742 | val |= hex_value (*input_line_pointer++); | |
18743 | } | |
18744 | return negative ? -val : val; | |
18745 | } | |
18746 | else | |
18747 | { | |
18748 | ++input_line_pointer; | |
3882b010 | 18749 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18750 | { |
18751 | val <<= 3; | |
18752 | val |= *input_line_pointer++ - '0'; | |
18753 | } | |
18754 | return negative ? -val : val; | |
18755 | } | |
18756 | } | |
3882b010 | 18757 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18758 | { |
18759 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
18760 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 18761 | as_warn (_("invalid number")); |
252b5132 RH |
18762 | return -1; |
18763 | } | |
3882b010 | 18764 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18765 | { |
18766 | val *= 10; | |
18767 | val += *input_line_pointer++ - '0'; | |
18768 | } | |
18769 | return negative ? -val : val; | |
18770 | } | |
18771 | ||
18772 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
18773 | is an initial number which is the ECOFF file index. In the non-ECOFF |
18774 | case .file implies DWARF-2. */ | |
18775 | ||
18776 | static void | |
17a2f251 | 18777 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 18778 | { |
ecb4347a DJ |
18779 | static int first_file_directive = 0; |
18780 | ||
c5dd6aab DJ |
18781 | if (ECOFF_DEBUGGING) |
18782 | { | |
18783 | get_number (); | |
18784 | s_app_file (0); | |
18785 | } | |
18786 | else | |
ecb4347a DJ |
18787 | { |
18788 | char *filename; | |
18789 | ||
18790 | filename = dwarf2_directive_file (0); | |
18791 | ||
18792 | /* Versions of GCC up to 3.1 start files with a ".file" | |
18793 | directive even for stabs output. Make sure that this | |
18794 | ".file" is handled. Note that you need a version of GCC | |
18795 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
18796 | if (filename != NULL && ! first_file_directive) | |
18797 | { | |
18798 | (void) new_logical_line (filename, -1); | |
c04f5787 | 18799 | s_app_file_string (filename, 0); |
ecb4347a DJ |
18800 | } |
18801 | first_file_directive = 1; | |
18802 | } | |
c5dd6aab DJ |
18803 | } |
18804 | ||
18805 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
18806 | |
18807 | static void | |
17a2f251 | 18808 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 18809 | { |
c5dd6aab DJ |
18810 | if (!ECOFF_DEBUGGING) |
18811 | dwarf2_directive_loc (0); | |
252b5132 RH |
18812 | } |
18813 | ||
252b5132 RH |
18814 | /* The .end directive. */ |
18815 | ||
18816 | static void | |
17a2f251 | 18817 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
18818 | { |
18819 | symbolS *p; | |
252b5132 | 18820 | |
7a621144 DJ |
18821 | /* Following functions need their own .frame and .cprestore directives. */ |
18822 | mips_frame_reg_valid = 0; | |
18823 | mips_cprestore_valid = 0; | |
18824 | ||
252b5132 RH |
18825 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
18826 | { | |
18827 | p = get_symbol (); | |
18828 | demand_empty_rest_of_line (); | |
18829 | } | |
18830 | else | |
18831 | p = NULL; | |
18832 | ||
14949570 | 18833 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
18834 | as_warn (_(".end not in text section")); |
18835 | ||
18836 | if (!cur_proc_ptr) | |
18837 | { | |
18838 | as_warn (_(".end directive without a preceding .ent directive.")); | |
18839 | demand_empty_rest_of_line (); | |
18840 | return; | |
18841 | } | |
18842 | ||
18843 | if (p != NULL) | |
18844 | { | |
9c2799c2 | 18845 | gas_assert (S_GET_NAME (p)); |
9b2f1d35 | 18846 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
252b5132 | 18847 | as_warn (_(".end symbol does not match .ent symbol.")); |
ecb4347a DJ |
18848 | |
18849 | if (debug_type == DEBUG_STABS) | |
18850 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
18851 | S_GET_NAME (p)); | |
252b5132 RH |
18852 | } |
18853 | else | |
18854 | as_warn (_(".end directive missing or unknown symbol")); | |
18855 | ||
2132e3a3 | 18856 | #ifdef OBJ_ELF |
9b2f1d35 EC |
18857 | /* Create an expression to calculate the size of the function. */ |
18858 | if (p && cur_proc_ptr) | |
18859 | { | |
18860 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
18861 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
18862 | ||
18863 | obj->size = exp; | |
18864 | exp->X_op = O_subtract; | |
18865 | exp->X_add_symbol = symbol_temp_new_now (); | |
18866 | exp->X_op_symbol = p; | |
18867 | exp->X_add_number = 0; | |
18868 | ||
18869 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
18870 | } | |
18871 | ||
ecb4347a | 18872 | /* Generate a .pdr section. */ |
f43abd2b | 18873 | if (IS_ELF && !ECOFF_DEBUGGING && mips_flag_pdr) |
ecb4347a DJ |
18874 | { |
18875 | segT saved_seg = now_seg; | |
18876 | subsegT saved_subseg = now_subseg; | |
ecb4347a DJ |
18877 | expressionS exp; |
18878 | char *fragp; | |
252b5132 | 18879 | |
252b5132 | 18880 | #ifdef md_flush_pending_output |
ecb4347a | 18881 | md_flush_pending_output (); |
252b5132 RH |
18882 | #endif |
18883 | ||
9c2799c2 | 18884 | gas_assert (pdr_seg); |
ecb4347a | 18885 | subseg_set (pdr_seg, 0); |
252b5132 | 18886 | |
ecb4347a DJ |
18887 | /* Write the symbol. */ |
18888 | exp.X_op = O_symbol; | |
18889 | exp.X_add_symbol = p; | |
18890 | exp.X_add_number = 0; | |
18891 | emit_expr (&exp, 4); | |
252b5132 | 18892 | |
ecb4347a | 18893 | fragp = frag_more (7 * 4); |
252b5132 | 18894 | |
17a2f251 TS |
18895 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
18896 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
18897 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
18898 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
18899 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
18900 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
18901 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 18902 | |
ecb4347a DJ |
18903 | subseg_set (saved_seg, saved_subseg); |
18904 | } | |
18905 | #endif /* OBJ_ELF */ | |
252b5132 RH |
18906 | |
18907 | cur_proc_ptr = NULL; | |
18908 | } | |
18909 | ||
18910 | /* The .aent and .ent directives. */ | |
18911 | ||
18912 | static void | |
17a2f251 | 18913 | s_mips_ent (int aent) |
252b5132 | 18914 | { |
252b5132 | 18915 | symbolS *symbolP; |
252b5132 RH |
18916 | |
18917 | symbolP = get_symbol (); | |
18918 | if (*input_line_pointer == ',') | |
f9419b05 | 18919 | ++input_line_pointer; |
252b5132 | 18920 | SKIP_WHITESPACE (); |
3882b010 | 18921 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 18922 | || *input_line_pointer == '-') |
874e8986 | 18923 | get_number (); |
252b5132 | 18924 | |
14949570 | 18925 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
18926 | as_warn (_(".ent or .aent not in text section.")); |
18927 | ||
18928 | if (!aent && cur_proc_ptr) | |
9a41af64 | 18929 | as_warn (_("missing .end")); |
252b5132 RH |
18930 | |
18931 | if (!aent) | |
18932 | { | |
7a621144 DJ |
18933 | /* This function needs its own .frame and .cprestore directives. */ |
18934 | mips_frame_reg_valid = 0; | |
18935 | mips_cprestore_valid = 0; | |
18936 | ||
252b5132 RH |
18937 | cur_proc_ptr = &cur_proc; |
18938 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
18939 | ||
9b2f1d35 | 18940 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 18941 | |
f9419b05 | 18942 | ++numprocs; |
ecb4347a DJ |
18943 | |
18944 | if (debug_type == DEBUG_STABS) | |
18945 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
18946 | S_GET_NAME (symbolP)); | |
252b5132 RH |
18947 | } |
18948 | ||
7c0fc524 MR |
18949 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
18950 | ||
252b5132 RH |
18951 | demand_empty_rest_of_line (); |
18952 | } | |
18953 | ||
18954 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 18955 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 18956 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 18957 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
18958 | symbol table (in the mdebug section). */ |
18959 | ||
18960 | static void | |
17a2f251 | 18961 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 18962 | { |
ecb4347a | 18963 | #ifdef OBJ_ELF |
f43abd2b | 18964 | if (IS_ELF && !ECOFF_DEBUGGING) |
ecb4347a DJ |
18965 | { |
18966 | long val; | |
252b5132 | 18967 | |
ecb4347a DJ |
18968 | if (cur_proc_ptr == (procS *) NULL) |
18969 | { | |
18970 | as_warn (_(".frame outside of .ent")); | |
18971 | demand_empty_rest_of_line (); | |
18972 | return; | |
18973 | } | |
252b5132 | 18974 | |
ecb4347a DJ |
18975 | cur_proc_ptr->frame_reg = tc_get_register (1); |
18976 | ||
18977 | SKIP_WHITESPACE (); | |
18978 | if (*input_line_pointer++ != ',' | |
18979 | || get_absolute_expression_and_terminator (&val) != ',') | |
18980 | { | |
18981 | as_warn (_("Bad .frame directive")); | |
18982 | --input_line_pointer; | |
18983 | demand_empty_rest_of_line (); | |
18984 | return; | |
18985 | } | |
252b5132 | 18986 | |
ecb4347a DJ |
18987 | cur_proc_ptr->frame_offset = val; |
18988 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 18989 | |
252b5132 | 18990 | demand_empty_rest_of_line (); |
252b5132 | 18991 | } |
ecb4347a DJ |
18992 | else |
18993 | #endif /* OBJ_ELF */ | |
18994 | s_ignore (ignore); | |
252b5132 RH |
18995 | } |
18996 | ||
bdaaa2e1 KH |
18997 | /* The .fmask and .mask directives. If the mdebug section is present |
18998 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 18999 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 19000 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
19001 | make reference to the ecoff symbol table (in the mdebug section). */ |
19002 | ||
19003 | static void | |
17a2f251 | 19004 | s_mips_mask (int reg_type) |
252b5132 | 19005 | { |
ecb4347a | 19006 | #ifdef OBJ_ELF |
f43abd2b | 19007 | if (IS_ELF && !ECOFF_DEBUGGING) |
252b5132 | 19008 | { |
ecb4347a | 19009 | long mask, off; |
252b5132 | 19010 | |
ecb4347a DJ |
19011 | if (cur_proc_ptr == (procS *) NULL) |
19012 | { | |
19013 | as_warn (_(".mask/.fmask outside of .ent")); | |
19014 | demand_empty_rest_of_line (); | |
19015 | return; | |
19016 | } | |
252b5132 | 19017 | |
ecb4347a DJ |
19018 | if (get_absolute_expression_and_terminator (&mask) != ',') |
19019 | { | |
19020 | as_warn (_("Bad .mask/.fmask directive")); | |
19021 | --input_line_pointer; | |
19022 | demand_empty_rest_of_line (); | |
19023 | return; | |
19024 | } | |
252b5132 | 19025 | |
ecb4347a DJ |
19026 | off = get_absolute_expression (); |
19027 | ||
19028 | if (reg_type == 'F') | |
19029 | { | |
19030 | cur_proc_ptr->fpreg_mask = mask; | |
19031 | cur_proc_ptr->fpreg_offset = off; | |
19032 | } | |
19033 | else | |
19034 | { | |
19035 | cur_proc_ptr->reg_mask = mask; | |
19036 | cur_proc_ptr->reg_offset = off; | |
19037 | } | |
19038 | ||
19039 | demand_empty_rest_of_line (); | |
252b5132 RH |
19040 | } |
19041 | else | |
ecb4347a DJ |
19042 | #endif /* OBJ_ELF */ |
19043 | s_ignore (reg_type); | |
252b5132 RH |
19044 | } |
19045 | ||
316f5878 RS |
19046 | /* A table describing all the processors gas knows about. Names are |
19047 | matched in the order listed. | |
e7af610e | 19048 | |
316f5878 RS |
19049 | To ease comparison, please keep this table in the same order as |
19050 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
19051 | static const struct mips_cpu_info mips_cpu_info_table[] = |
19052 | { | |
316f5878 | 19053 | /* Entries for generic ISAs */ |
ad3fea08 TS |
19054 | { "mips1", MIPS_CPU_IS_ISA, ISA_MIPS1, CPU_R3000 }, |
19055 | { "mips2", MIPS_CPU_IS_ISA, ISA_MIPS2, CPU_R6000 }, | |
19056 | { "mips3", MIPS_CPU_IS_ISA, ISA_MIPS3, CPU_R4000 }, | |
19057 | { "mips4", MIPS_CPU_IS_ISA, ISA_MIPS4, CPU_R8000 }, | |
19058 | { "mips5", MIPS_CPU_IS_ISA, ISA_MIPS5, CPU_MIPS5 }, | |
19059 | { "mips32", MIPS_CPU_IS_ISA, ISA_MIPS32, CPU_MIPS32 }, | |
19060 | { "mips32r2", MIPS_CPU_IS_ISA, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19061 | { "mips64", MIPS_CPU_IS_ISA, ISA_MIPS64, CPU_MIPS64 }, | |
19062 | { "mips64r2", MIPS_CPU_IS_ISA, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
316f5878 RS |
19063 | |
19064 | /* MIPS I */ | |
ad3fea08 TS |
19065 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, |
19066 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
19067 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
19068 | |
19069 | /* MIPS II */ | |
ad3fea08 | 19070 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
19071 | |
19072 | /* MIPS III */ | |
ad3fea08 TS |
19073 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, |
19074 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
19075 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
19076 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
19077 | { "vr4120", 0, ISA_MIPS3, CPU_VR4120 }, | |
19078 | { "vr4130", 0, ISA_MIPS3, CPU_VR4120 }, | |
19079 | { "vr4181", 0, ISA_MIPS3, CPU_R4111 }, | |
19080 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, | |
19081 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
19082 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
19083 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
19084 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
b15591bb AN |
19085 | /* ST Microelectronics Loongson 2E and 2F cores */ |
19086 | { "loongson2e", 0, ISA_MIPS3, CPU_LOONGSON_2E }, | |
19087 | { "loongson2f", 0, ISA_MIPS3, CPU_LOONGSON_2F }, | |
316f5878 RS |
19088 | |
19089 | /* MIPS IV */ | |
ad3fea08 TS |
19090 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, |
19091 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
19092 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
3aa3176b TS |
19093 | { "r14000", 0, ISA_MIPS4, CPU_R14000 }, |
19094 | { "r16000", 0, ISA_MIPS4, CPU_R16000 }, | |
ad3fea08 TS |
19095 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, |
19096 | { "vr5400", 0, ISA_MIPS4, CPU_VR5400 }, | |
19097 | { "vr5500", 0, ISA_MIPS4, CPU_VR5500 }, | |
19098 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, | |
19099 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
19100 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
19101 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
19102 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
19103 | { "rm7000", 0, ISA_MIPS4, CPU_RM7000 }, | |
19104 | { "rm9000", 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
19105 | |
19106 | /* MIPS 32 */ | |
ad3fea08 TS |
19107 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32 }, |
19108 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
19109 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
19110 | { "4ksc", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
19111 | ||
19112 | /* MIPS 32 Release 2 */ | |
19113 | { "4kec", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19114 | { "4kem", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19115 | { "4kep", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19116 | { "4ksd", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19117 | { "m4k", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19118 | { "m4kp", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
b5503c7b MR |
19119 | { "m14k", MIPS_CPU_ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, |
19120 | { "m14kc", MIPS_CPU_ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
7a795ef4 MR |
19121 | { "m14ke", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2 | MIPS_CPU_ASE_MCU, |
19122 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19123 | { "m14kec", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2 | MIPS_CPU_ASE_MCU, | |
19124 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 19125 | { "24kc", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 19126 | { "24kf2_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 19127 | { "24kf", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
19128 | { "24kf1_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
19129 | /* Deprecated forms of the above. */ | |
19130 | { "24kfx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 19131 | { "24kx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 19132 | /* 24KE is a 24K with DSP ASE, other ASEs are optional. */ |
ad3fea08 | 19133 | { "24kec", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 19134 | { "24kef2_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 19135 | { "24kef", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
19136 | { "24kef1_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
19137 | /* Deprecated forms of the above. */ | |
19138 | { "24kefx", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
65263ce3 | 19139 | { "24kex", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 19140 | /* 34K is a 24K with DSP and MT ASE, other ASEs are optional. */ |
a360e743 TS |
19141 | { "34kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19142 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19143 | { "34kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19144 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
19145 | { "34kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19146 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19147 | { "34kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19148 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19149 | /* Deprecated forms of the above. */ | |
19150 | { "34kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19151 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
19152 | { "34kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19153 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
711eefe4 SL |
19154 | /* 34Kn is a 34kc without DSP. */ |
19155 | { "34kn", MIPS_CPU_ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
19156 | /* 74K with DSP and DSPR2 ASE, other ASEs are optional. */ |
19157 | { "74kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
19158 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19159 | { "74kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19160 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
19161 | { "74kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19162 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19163 | { "74kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19164 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19165 | { "74kf3_2", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
19166 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19167 | /* Deprecated forms of the above. */ | |
19168 | { "74kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
19169 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
19170 | { "74kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19171 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
30f8113a SL |
19172 | /* 1004K cores are multiprocessor versions of the 34K. */ |
19173 | { "1004kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19174 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19175 | { "1004kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19176 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19177 | { "1004kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19178 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19179 | { "1004kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19180 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
32b26a03 | 19181 | |
316f5878 | 19182 | /* MIPS 64 */ |
ad3fea08 TS |
19183 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, |
19184 | { "5kf", 0, ISA_MIPS64, CPU_MIPS64 }, | |
19185 | { "20kc", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
7764b395 | 19186 | { "25kf", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, |
ad3fea08 | 19187 | |
c7a23324 | 19188 | /* Broadcom SB-1 CPU core */ |
65263ce3 TS |
19189 | { "sb1", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, |
19190 | ISA_MIPS64, CPU_SB1 }, | |
1e85aad8 JW |
19191 | /* Broadcom SB-1A CPU core */ |
19192 | { "sb1a", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, | |
19193 | ISA_MIPS64, CPU_SB1 }, | |
d051516a NC |
19194 | |
19195 | { "loongson3a", 0, ISA_MIPS64, CPU_LOONGSON_3A }, | |
e7af610e | 19196 | |
ed163775 MR |
19197 | /* MIPS 64 Release 2 */ |
19198 | ||
967344c6 AN |
19199 | /* Cavium Networks Octeon CPU core */ |
19200 | { "octeon", 0, ISA_MIPS64R2, CPU_OCTEON }, | |
dd6a37e7 | 19201 | { "octeon+", 0, ISA_MIPS64R2, CPU_OCTEONP }, |
432233b3 | 19202 | { "octeon2", 0, ISA_MIPS64R2, CPU_OCTEON2 }, |
967344c6 | 19203 | |
52b6b6b9 JM |
19204 | /* RMI Xlr */ |
19205 | { "xlr", 0, ISA_MIPS64, CPU_XLR }, | |
19206 | ||
55a36193 MK |
19207 | /* Broadcom XLP. |
19208 | XLP is mostly like XLR, with the prominent exception that it is | |
19209 | MIPS64R2 rather than MIPS64. */ | |
19210 | { "xlp", 0, ISA_MIPS64R2, CPU_XLR }, | |
19211 | ||
316f5878 RS |
19212 | /* End marker */ |
19213 | { NULL, 0, 0, 0 } | |
19214 | }; | |
e7af610e | 19215 | |
84ea6cf2 | 19216 | |
316f5878 RS |
19217 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
19218 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 19219 | |
316f5878 | 19220 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 19221 | |
b34976b6 | 19222 | static bfd_boolean |
17a2f251 | 19223 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
19224 | { |
19225 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
19226 | given++, canonical++; | |
19227 | ||
19228 | return ((*given == 0 && *canonical == 0) | |
19229 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
19230 | } | |
19231 | ||
19232 | ||
19233 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
19234 | CPU name. We've traditionally allowed a lot of variation here. | |
19235 | ||
19236 | Note: this function is shared between GCC and GAS. */ | |
19237 | ||
b34976b6 | 19238 | static bfd_boolean |
17a2f251 | 19239 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
19240 | { |
19241 | /* First see if the name matches exactly, or with a final "000" | |
19242 | turned into "k". */ | |
19243 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 19244 | return TRUE; |
316f5878 RS |
19245 | |
19246 | /* If not, try comparing based on numerical designation alone. | |
19247 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
19248 | if (TOLOWER (*given) == 'r') | |
19249 | given++; | |
19250 | if (!ISDIGIT (*given)) | |
b34976b6 | 19251 | return FALSE; |
316f5878 RS |
19252 | |
19253 | /* Skip over some well-known prefixes in the canonical name, | |
19254 | hoping to find a number there too. */ | |
19255 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
19256 | canonical += 2; | |
19257 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
19258 | canonical += 2; | |
19259 | else if (TOLOWER (canonical[0]) == 'r') | |
19260 | canonical += 1; | |
19261 | ||
19262 | return mips_strict_matching_cpu_name_p (canonical, given); | |
19263 | } | |
19264 | ||
19265 | ||
19266 | /* Parse an option that takes the name of a processor as its argument. | |
19267 | OPTION is the name of the option and CPU_STRING is the argument. | |
19268 | Return the corresponding processor enumeration if the CPU_STRING is | |
19269 | recognized, otherwise report an error and return null. | |
19270 | ||
19271 | A similar function exists in GCC. */ | |
e7af610e NC |
19272 | |
19273 | static const struct mips_cpu_info * | |
17a2f251 | 19274 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 19275 | { |
316f5878 | 19276 | const struct mips_cpu_info *p; |
e7af610e | 19277 | |
316f5878 RS |
19278 | /* 'from-abi' selects the most compatible architecture for the given |
19279 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
19280 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
19281 | version. Look first at the -mgp options, if given, otherwise base | |
19282 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 19283 | |
316f5878 RS |
19284 | Treat NO_ABI like the EABIs. One reason to do this is that the |
19285 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
19286 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
19287 | 'mips64', just as we did in the days before 'from-abi'. */ | |
19288 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
19289 | { | |
19290 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
19291 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
19292 | ||
19293 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
19294 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
19295 | ||
19296 | if (file_mips_gp32 >= 0) | |
19297 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
19298 | ||
19299 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
19300 | ? ISA_MIPS3 | |
19301 | : ISA_MIPS1); | |
19302 | } | |
19303 | ||
19304 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
19305 | if (strcasecmp (cpu_string, "default") == 0) | |
19306 | return 0; | |
19307 | ||
19308 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
19309 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
19310 | return p; | |
19311 | ||
20203fb9 | 19312 | as_bad (_("Bad value (%s) for %s"), cpu_string, option); |
316f5878 | 19313 | return 0; |
e7af610e NC |
19314 | } |
19315 | ||
316f5878 RS |
19316 | /* Return the canonical processor information for ISA (a member of the |
19317 | ISA_MIPS* enumeration). */ | |
19318 | ||
e7af610e | 19319 | static const struct mips_cpu_info * |
17a2f251 | 19320 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
19321 | { |
19322 | int i; | |
19323 | ||
19324 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 19325 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 19326 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
19327 | return (&mips_cpu_info_table[i]); |
19328 | ||
e972090a | 19329 | return NULL; |
e7af610e | 19330 | } |
fef14a42 TS |
19331 | |
19332 | static const struct mips_cpu_info * | |
17a2f251 | 19333 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
19334 | { |
19335 | int i; | |
19336 | ||
19337 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
19338 | if (arch == mips_cpu_info_table[i].cpu) | |
19339 | return (&mips_cpu_info_table[i]); | |
19340 | ||
19341 | return NULL; | |
19342 | } | |
316f5878 RS |
19343 | \f |
19344 | static void | |
17a2f251 | 19345 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
19346 | { |
19347 | if (*first_p) | |
19348 | { | |
19349 | fprintf (stream, "%24s", ""); | |
19350 | *col_p = 24; | |
19351 | } | |
19352 | else | |
19353 | { | |
19354 | fprintf (stream, ", "); | |
19355 | *col_p += 2; | |
19356 | } | |
e7af610e | 19357 | |
316f5878 RS |
19358 | if (*col_p + strlen (string) > 72) |
19359 | { | |
19360 | fprintf (stream, "\n%24s", ""); | |
19361 | *col_p = 24; | |
19362 | } | |
19363 | ||
19364 | fprintf (stream, "%s", string); | |
19365 | *col_p += strlen (string); | |
19366 | ||
19367 | *first_p = 0; | |
19368 | } | |
19369 | ||
19370 | void | |
17a2f251 | 19371 | md_show_usage (FILE *stream) |
e7af610e | 19372 | { |
316f5878 RS |
19373 | int column, first; |
19374 | size_t i; | |
19375 | ||
19376 | fprintf (stream, _("\ | |
19377 | MIPS options:\n\ | |
316f5878 RS |
19378 | -EB generate big endian output\n\ |
19379 | -EL generate little endian output\n\ | |
19380 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
19381 | -G NUM allow referencing objects up to NUM bytes\n\ | |
19382 | implicitly with the gp register [default 8]\n")); | |
19383 | fprintf (stream, _("\ | |
19384 | -mips1 generate MIPS ISA I instructions\n\ | |
19385 | -mips2 generate MIPS ISA II instructions\n\ | |
19386 | -mips3 generate MIPS ISA III instructions\n\ | |
19387 | -mips4 generate MIPS ISA IV instructions\n\ | |
19388 | -mips5 generate MIPS ISA V instructions\n\ | |
19389 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 19390 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 | 19391 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 19392 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
316f5878 RS |
19393 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
19394 | ||
19395 | first = 1; | |
e7af610e NC |
19396 | |
19397 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
19398 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
19399 | show (stream, "from-abi", &column, &first); | |
19400 | fputc ('\n', stream); | |
e7af610e | 19401 | |
316f5878 RS |
19402 | fprintf (stream, _("\ |
19403 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
19404 | -no-mCPU don't generate code specific to CPU.\n\ | |
19405 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
19406 | ||
19407 | first = 1; | |
19408 | ||
19409 | show (stream, "3900", &column, &first); | |
19410 | show (stream, "4010", &column, &first); | |
19411 | show (stream, "4100", &column, &first); | |
19412 | show (stream, "4650", &column, &first); | |
19413 | fputc ('\n', stream); | |
19414 | ||
19415 | fprintf (stream, _("\ | |
19416 | -mips16 generate mips16 instructions\n\ | |
19417 | -no-mips16 do not generate mips16 instructions\n")); | |
19418 | fprintf (stream, _("\ | |
df58fc94 RS |
19419 | -mmicromips generate microMIPS instructions\n\ |
19420 | -mno-micromips do not generate microMIPS instructions\n")); | |
19421 | fprintf (stream, _("\ | |
e16bfa71 TS |
19422 | -msmartmips generate smartmips instructions\n\ |
19423 | -mno-smartmips do not generate smartmips instructions\n")); | |
19424 | fprintf (stream, _("\ | |
74cd071d CF |
19425 | -mdsp generate DSP instructions\n\ |
19426 | -mno-dsp do not generate DSP instructions\n")); | |
19427 | fprintf (stream, _("\ | |
8b082fb1 TS |
19428 | -mdspr2 generate DSP R2 instructions\n\ |
19429 | -mno-dspr2 do not generate DSP R2 instructions\n")); | |
19430 | fprintf (stream, _("\ | |
ef2e4d86 CF |
19431 | -mmt generate MT instructions\n\ |
19432 | -mno-mt do not generate MT instructions\n")); | |
19433 | fprintf (stream, _("\ | |
dec0624d MR |
19434 | -mmcu generate MCU instructions\n\ |
19435 | -mno-mcu do not generate MCU instructions\n")); | |
19436 | fprintf (stream, _("\ | |
c67a084a NC |
19437 | -mfix-loongson2f-jump work around Loongson2F JUMP instructions\n\ |
19438 | -mfix-loongson2f-nop work around Loongson2F NOP errata\n\ | |
d766e8ec | 19439 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 19440 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
6a32d874 | 19441 | -mfix-24k insert a nop after ERET and DERET instructions\n\ |
d954098f | 19442 | -mfix-cn63xxp1 work around CN63XXP1 PREF errata\n\ |
316f5878 RS |
19443 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
19444 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 | 19445 | -msym32 assume all symbols have 32-bit values\n\ |
316f5878 RS |
19446 | -O0 remove unneeded NOPs, do not swap branches\n\ |
19447 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
19448 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ |
19449 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
037b32b9 AN |
19450 | fprintf (stream, _("\ |
19451 | -mhard-float allow floating-point instructions\n\ | |
19452 | -msoft-float do not allow floating-point instructions\n\ | |
19453 | -msingle-float only allow 32-bit floating-point operations\n\ | |
19454 | -mdouble-float allow 32-bit and 64-bit floating-point operations\n\ | |
19455 | --[no-]construct-floats [dis]allow floating point values to be constructed\n" | |
19456 | )); | |
316f5878 RS |
19457 | #ifdef OBJ_ELF |
19458 | fprintf (stream, _("\ | |
19459 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
861fb55a | 19460 | -call_nonpic generate non-PIC code that can operate with DSOs\n\ |
0c000745 | 19461 | -mvxworks-pic generate VxWorks position independent code\n\ |
861fb55a | 19462 | -non_shared do not generate code that can operate with DSOs\n\ |
316f5878 | 19463 | -xgot assume a 32 bit GOT\n\ |
dcd410fe | 19464 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 | 19465 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
d821e36b | 19466 | position dependent (non shared) code\n\ |
316f5878 RS |
19467 | -mabi=ABI create ABI conformant object file for:\n")); |
19468 | ||
19469 | first = 1; | |
19470 | ||
19471 | show (stream, "32", &column, &first); | |
19472 | show (stream, "o64", &column, &first); | |
19473 | show (stream, "n32", &column, &first); | |
19474 | show (stream, "64", &column, &first); | |
19475 | show (stream, "eabi", &column, &first); | |
19476 | ||
19477 | fputc ('\n', stream); | |
19478 | ||
19479 | fprintf (stream, _("\ | |
19480 | -32 create o32 ABI object file (default)\n\ | |
19481 | -n32 create n32 ABI object file\n\ | |
19482 | -64 create 64 ABI object file\n")); | |
19483 | #endif | |
e7af610e | 19484 | } |
14e777e0 | 19485 | |
1575952e | 19486 | #ifdef TE_IRIX |
14e777e0 | 19487 | enum dwarf2_format |
413a266c | 19488 | mips_dwarf2_format (asection *sec ATTRIBUTE_UNUSED) |
14e777e0 | 19489 | { |
369943fe | 19490 | if (HAVE_64BIT_SYMBOLS) |
1575952e | 19491 | return dwarf2_format_64bit_irix; |
14e777e0 KB |
19492 | else |
19493 | return dwarf2_format_32bit; | |
19494 | } | |
1575952e | 19495 | #endif |
73369e65 EC |
19496 | |
19497 | int | |
19498 | mips_dwarf2_addr_size (void) | |
19499 | { | |
6b6b3450 | 19500 | if (HAVE_64BIT_OBJECTS) |
73369e65 | 19501 | return 8; |
73369e65 EC |
19502 | else |
19503 | return 4; | |
19504 | } | |
5862107c EC |
19505 | |
19506 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
19507 | void | |
19508 | mips_cfi_frame_initial_instructions (void) | |
19509 | { | |
19510 | cfi_add_CFA_def_cfa_register (SP); | |
19511 | } | |
19512 | ||
707bfff6 TS |
19513 | int |
19514 | tc_mips_regname_to_dw2regnum (char *regname) | |
19515 | { | |
19516 | unsigned int regnum = -1; | |
19517 | unsigned int reg; | |
19518 | ||
19519 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
19520 | regnum = reg; | |
19521 | ||
19522 | return regnum; | |
19523 | } |