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, |
c67a084a NC |
3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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 | ||
148 | /* True if this is a mips16 instruction and if we want the extended | |
149 | form of INSN_MO. */ | |
150 | bfd_boolean use_extend; | |
151 | ||
152 | /* The 16-bit extension instruction to use when USE_EXTEND is true. */ | |
153 | unsigned short extend; | |
154 | ||
155 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is | |
156 | a copy of INSN_MO->match with the operands filled in. */ | |
157 | unsigned long insn_opcode; | |
158 | ||
159 | /* The frag that contains the instruction. */ | |
160 | struct frag *frag; | |
161 | ||
162 | /* The offset into FRAG of the first instruction byte. */ | |
163 | long where; | |
164 | ||
165 | /* The relocs associated with the instruction, if any. */ | |
166 | fixS *fixp[3]; | |
167 | ||
a38419a5 RS |
168 | /* True if this entry cannot be moved from its current position. */ |
169 | unsigned int fixed_p : 1; | |
47e39b9d | 170 | |
708587a4 | 171 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
172 | unsigned int noreorder_p : 1; |
173 | ||
2fa15973 RS |
174 | /* True for mips16 instructions that jump to an absolute address. */ |
175 | unsigned int mips16_absolute_jump_p : 1; | |
15be625d CM |
176 | |
177 | /* True if this instruction is complete. */ | |
178 | unsigned int complete_p : 1; | |
47e39b9d RS |
179 | }; |
180 | ||
a325df1d TS |
181 | /* The ABI to use. */ |
182 | enum mips_abi_level | |
183 | { | |
184 | NO_ABI = 0, | |
185 | O32_ABI, | |
186 | O64_ABI, | |
187 | N32_ABI, | |
188 | N64_ABI, | |
189 | EABI_ABI | |
190 | }; | |
191 | ||
192 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 193 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 194 | |
143d77c5 EC |
195 | /* Whether or not we have code that can call pic code. */ |
196 | int mips_abicalls = FALSE; | |
197 | ||
aa6975fb ILT |
198 | /* Whether or not we have code which can be put into a shared |
199 | library. */ | |
200 | static bfd_boolean mips_in_shared = TRUE; | |
201 | ||
252b5132 RH |
202 | /* This is the set of options which may be modified by the .set |
203 | pseudo-op. We use a struct so that .set push and .set pop are more | |
204 | reliable. */ | |
205 | ||
e972090a NC |
206 | struct mips_set_options |
207 | { | |
252b5132 RH |
208 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
209 | if it has not been initialized. Changed by `.set mipsN', and the | |
210 | -mipsN command line option, and the default CPU. */ | |
211 | int isa; | |
1f25f5d3 CD |
212 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
213 | if they have not been initialized. Changed by `.set <asename>', by | |
214 | command line options, and based on the default architecture. */ | |
215 | int ase_mips3d; | |
deec1734 | 216 | int ase_mdmx; |
e16bfa71 | 217 | int ase_smartmips; |
74cd071d | 218 | int ase_dsp; |
8b082fb1 | 219 | int ase_dspr2; |
ef2e4d86 | 220 | int ase_mt; |
252b5132 RH |
221 | /* Whether we are assembling for the mips16 processor. 0 if we are |
222 | not, 1 if we are, and -1 if the value has not been initialized. | |
223 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
224 | -nomips16 command line options, and the default CPU. */ | |
225 | int mips16; | |
df58fc94 RS |
226 | /* Whether we are assembling for the mipsMIPS ASE. 0 if we are not, |
227 | 1 if we are, and -1 if the value has not been initialized. Changed | |
228 | by `.set micromips' and `.set nomicromips', and the -mmicromips | |
229 | and -mno-micromips command line options, and the default CPU. */ | |
230 | int micromips; | |
252b5132 RH |
231 | /* Non-zero if we should not reorder instructions. Changed by `.set |
232 | reorder' and `.set noreorder'. */ | |
233 | int noreorder; | |
741fe287 MR |
234 | /* Non-zero if we should not permit the register designated "assembler |
235 | temporary" to be used in instructions. The value is the register | |
236 | number, normally $at ($1). Changed by `.set at=REG', `.set noat' | |
237 | (same as `.set at=$0') and `.set at' (same as `.set at=$1'). */ | |
238 | unsigned int at; | |
252b5132 RH |
239 | /* Non-zero if we should warn when a macro instruction expands into |
240 | more than one machine instruction. Changed by `.set nomacro' and | |
241 | `.set macro'. */ | |
242 | int warn_about_macros; | |
243 | /* Non-zero if we should not move instructions. Changed by `.set | |
244 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
245 | int nomove; | |
246 | /* Non-zero if we should not optimize branches by moving the target | |
247 | of the branch into the delay slot. Actually, we don't perform | |
248 | this optimization anyhow. Changed by `.set bopt' and `.set | |
249 | nobopt'. */ | |
250 | int nobopt; | |
251 | /* Non-zero if we should not autoextend mips16 instructions. | |
252 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
253 | int noautoextend; | |
a325df1d TS |
254 | /* Restrict general purpose registers and floating point registers |
255 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
256 | is passed but can changed if the assembler code uses .set mipsN. */ | |
257 | int gp32; | |
258 | int fp32; | |
fef14a42 TS |
259 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
260 | command line option, and the default CPU. */ | |
261 | int arch; | |
aed1a261 RS |
262 | /* True if ".set sym32" is in effect. */ |
263 | bfd_boolean sym32; | |
037b32b9 AN |
264 | /* True if floating-point operations are not allowed. Changed by .set |
265 | softfloat or .set hardfloat, by command line options -msoft-float or | |
266 | -mhard-float. The default is false. */ | |
267 | bfd_boolean soft_float; | |
268 | ||
269 | /* True if only single-precision floating-point operations are allowed. | |
270 | Changed by .set singlefloat or .set doublefloat, command-line options | |
271 | -msingle-float or -mdouble-float. The default is false. */ | |
272 | bfd_boolean single_float; | |
252b5132 RH |
273 | }; |
274 | ||
037b32b9 AN |
275 | /* This is the struct we use to hold the current set of options. Note |
276 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to | |
277 | -1 to indicate that they have not been initialized. */ | |
278 | ||
a325df1d | 279 | /* True if -mgp32 was passed. */ |
a8e8e863 | 280 | static int file_mips_gp32 = -1; |
a325df1d TS |
281 | |
282 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 283 | static int file_mips_fp32 = -1; |
a325df1d | 284 | |
037b32b9 AN |
285 | /* 1 if -msoft-float, 0 if -mhard-float. The default is 0. */ |
286 | static int file_mips_soft_float = 0; | |
287 | ||
288 | /* 1 if -msingle-float, 0 if -mdouble-float. The default is 0. */ | |
289 | static int file_mips_single_float = 0; | |
252b5132 | 290 | |
e972090a NC |
291 | static struct mips_set_options mips_opts = |
292 | { | |
037b32b9 AN |
293 | /* isa */ ISA_UNKNOWN, /* ase_mips3d */ -1, /* ase_mdmx */ -1, |
294 | /* ase_smartmips */ 0, /* ase_dsp */ -1, /* ase_dspr2 */ -1, /* ase_mt */ -1, | |
df58fc94 | 295 | /* mips16 */ -1, /* micromips */ -1, /* noreorder */ 0, /* at */ ATREG, |
037b32b9 AN |
296 | /* warn_about_macros */ 0, /* nomove */ 0, /* nobopt */ 0, |
297 | /* noautoextend */ 0, /* gp32 */ 0, /* fp32 */ 0, /* arch */ CPU_UNKNOWN, | |
298 | /* sym32 */ FALSE, /* soft_float */ FALSE, /* single_float */ FALSE | |
e7af610e | 299 | }; |
252b5132 RH |
300 | |
301 | /* These variables are filled in with the masks of registers used. | |
302 | The object format code reads them and puts them in the appropriate | |
303 | place. */ | |
304 | unsigned long mips_gprmask; | |
305 | unsigned long mips_cprmask[4]; | |
306 | ||
307 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 308 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 309 | |
738f4d98 | 310 | /* True if any MIPS16 code was produced. */ |
a4672219 TS |
311 | static int file_ase_mips16; |
312 | ||
3994f87e TS |
313 | #define ISA_SUPPORTS_MIPS16E (mips_opts.isa == ISA_MIPS32 \ |
314 | || mips_opts.isa == ISA_MIPS32R2 \ | |
315 | || mips_opts.isa == ISA_MIPS64 \ | |
316 | || mips_opts.isa == ISA_MIPS64R2) | |
317 | ||
df58fc94 RS |
318 | /* True if any microMIPS code was produced. */ |
319 | static int file_ase_micromips; | |
320 | ||
b12dd2e4 CF |
321 | /* True if we want to create R_MIPS_JALR for jalr $25. */ |
322 | #ifdef TE_IRIX | |
1180b5a4 | 323 | #define MIPS_JALR_HINT_P(EXPR) HAVE_NEWABI |
b12dd2e4 | 324 | #else |
1180b5a4 RS |
325 | /* As a GNU extension, we use R_MIPS_JALR for o32 too. However, |
326 | because there's no place for any addend, the only acceptable | |
327 | expression is a bare symbol. */ | |
328 | #define MIPS_JALR_HINT_P(EXPR) \ | |
329 | (!HAVE_IN_PLACE_ADDENDS \ | |
330 | || ((EXPR)->X_op == O_symbol && (EXPR)->X_add_number == 0)) | |
b12dd2e4 CF |
331 | #endif |
332 | ||
1f25f5d3 CD |
333 | /* True if -mips3d was passed or implied by arguments passed on the |
334 | command line (e.g., by -march). */ | |
335 | static int file_ase_mips3d; | |
336 | ||
deec1734 CD |
337 | /* True if -mdmx was passed or implied by arguments passed on the |
338 | command line (e.g., by -march). */ | |
339 | static int file_ase_mdmx; | |
340 | ||
e16bfa71 TS |
341 | /* True if -msmartmips was passed or implied by arguments passed on the |
342 | command line (e.g., by -march). */ | |
343 | static int file_ase_smartmips; | |
344 | ||
ad3fea08 TS |
345 | #define ISA_SUPPORTS_SMARTMIPS (mips_opts.isa == ISA_MIPS32 \ |
346 | || mips_opts.isa == ISA_MIPS32R2) | |
e16bfa71 | 347 | |
74cd071d CF |
348 | /* True if -mdsp was passed or implied by arguments passed on the |
349 | command line (e.g., by -march). */ | |
350 | static int file_ase_dsp; | |
351 | ||
ad3fea08 TS |
352 | #define ISA_SUPPORTS_DSP_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
353 | || mips_opts.isa == ISA_MIPS64R2) | |
354 | ||
65263ce3 TS |
355 | #define ISA_SUPPORTS_DSP64_ASE (mips_opts.isa == ISA_MIPS64R2) |
356 | ||
8b082fb1 TS |
357 | /* True if -mdspr2 was passed or implied by arguments passed on the |
358 | command line (e.g., by -march). */ | |
359 | static int file_ase_dspr2; | |
360 | ||
361 | #define ISA_SUPPORTS_DSPR2_ASE (mips_opts.isa == ISA_MIPS32R2 \ | |
362 | || mips_opts.isa == ISA_MIPS64R2) | |
363 | ||
ef2e4d86 CF |
364 | /* True if -mmt was passed or implied by arguments passed on the |
365 | command line (e.g., by -march). */ | |
366 | static int file_ase_mt; | |
367 | ||
ad3fea08 TS |
368 | #define ISA_SUPPORTS_MT_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
369 | || mips_opts.isa == ISA_MIPS64R2) | |
370 | ||
ec68c924 | 371 | /* The argument of the -march= flag. The architecture we are assembling. */ |
fef14a42 | 372 | static int file_mips_arch = CPU_UNKNOWN; |
316f5878 | 373 | static const char *mips_arch_string; |
ec68c924 EC |
374 | |
375 | /* The argument of the -mtune= flag. The architecture for which we | |
376 | are optimizing. */ | |
377 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 378 | static const char *mips_tune_string; |
ec68c924 | 379 | |
316f5878 | 380 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
381 | static int mips_32bitmode = 0; |
382 | ||
316f5878 RS |
383 | /* True if the given ABI requires 32-bit registers. */ |
384 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
385 | ||
386 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
387 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
388 | ((ABI) == N32_ABI \ | |
389 | || (ABI) == N64_ABI \ | |
316f5878 RS |
390 | || (ABI) == O64_ABI) |
391 | ||
ad3fea08 | 392 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
393 | #define ISA_HAS_64BIT_REGS(ISA) \ |
394 | ((ISA) == ISA_MIPS3 \ | |
395 | || (ISA) == ISA_MIPS4 \ | |
396 | || (ISA) == ISA_MIPS5 \ | |
397 | || (ISA) == ISA_MIPS64 \ | |
398 | || (ISA) == ISA_MIPS64R2) | |
9ce8a5dd | 399 | |
ad3fea08 TS |
400 | /* Return true if ISA supports 64 bit wide float registers. */ |
401 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
402 | ((ISA) == ISA_MIPS3 \ | |
403 | || (ISA) == ISA_MIPS4 \ | |
404 | || (ISA) == ISA_MIPS5 \ | |
405 | || (ISA) == ISA_MIPS32R2 \ | |
406 | || (ISA) == ISA_MIPS64 \ | |
407 | || (ISA) == ISA_MIPS64R2) | |
408 | ||
af7ee8bf CD |
409 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
410 | instructions. */ | |
707bfff6 | 411 | #define ISA_HAS_DROR(ISA) \ |
df58fc94 RS |
412 | ((ISA) == ISA_MIPS64R2 \ |
413 | || (mips_opts.micromips \ | |
414 | && ISA_HAS_64BIT_REGS (ISA)) \ | |
415 | ) | |
af7ee8bf CD |
416 | |
417 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
418 | instructions. */ | |
707bfff6 TS |
419 | #define ISA_HAS_ROR(ISA) \ |
420 | ((ISA) == ISA_MIPS32R2 \ | |
421 | || (ISA) == ISA_MIPS64R2 \ | |
df58fc94 RS |
422 | || mips_opts.ase_smartmips \ |
423 | || mips_opts.micromips \ | |
424 | ) | |
707bfff6 | 425 | |
7455baf8 TS |
426 | /* Return true if ISA supports single-precision floats in odd registers. */ |
427 | #define ISA_HAS_ODD_SINGLE_FPR(ISA) \ | |
428 | ((ISA) == ISA_MIPS32 \ | |
429 | || (ISA) == ISA_MIPS32R2 \ | |
430 | || (ISA) == ISA_MIPS64 \ | |
431 | || (ISA) == ISA_MIPS64R2) | |
af7ee8bf | 432 | |
ad3fea08 TS |
433 | /* Return true if ISA supports move to/from high part of a 64-bit |
434 | floating-point register. */ | |
435 | #define ISA_HAS_MXHC1(ISA) \ | |
436 | ((ISA) == ISA_MIPS32R2 \ | |
437 | || (ISA) == ISA_MIPS64R2) | |
438 | ||
e013f690 | 439 | #define HAVE_32BIT_GPRS \ |
ad3fea08 | 440 | (mips_opts.gp32 || !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 441 | |
e013f690 | 442 | #define HAVE_32BIT_FPRS \ |
ad3fea08 | 443 | (mips_opts.fp32 || !ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
ca4e0257 | 444 | |
ad3fea08 TS |
445 | #define HAVE_64BIT_GPRS (!HAVE_32BIT_GPRS) |
446 | #define HAVE_64BIT_FPRS (!HAVE_32BIT_FPRS) | |
ca4e0257 | 447 | |
316f5878 | 448 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 449 | |
316f5878 | 450 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 451 | |
3b91255e RS |
452 | /* True if relocations are stored in-place. */ |
453 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
454 | ||
aed1a261 RS |
455 | /* The ABI-derived address size. */ |
456 | #define HAVE_64BIT_ADDRESSES \ | |
457 | (HAVE_64BIT_GPRS && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) | |
458 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) | |
e013f690 | 459 | |
aed1a261 RS |
460 | /* The size of symbolic constants (i.e., expressions of the form |
461 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
462 | #define HAVE_32BIT_SYMBOLS \ | |
463 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
464 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 465 | |
b7c7d6c1 TS |
466 | /* Addresses are loaded in different ways, depending on the address size |
467 | in use. The n32 ABI Documentation also mandates the use of additions | |
468 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 469 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 470 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
471 | |
472 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 473 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
474 | |
475 | #define ADDRESS_LOAD_INSN \ | |
476 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
477 | ||
478 | #define ADDRESS_STORE_INSN \ | |
479 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
480 | ||
a4672219 | 481 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
482 | #define CPU_HAS_MIPS16(cpu) \ |
483 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
484 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 485 | |
2309ddf2 | 486 | /* Return true if the given CPU supports the microMIPS ASE. */ |
df58fc94 RS |
487 | #define CPU_HAS_MICROMIPS(cpu) 0 |
488 | ||
60b63b72 RS |
489 | /* True if CPU has a dror instruction. */ |
490 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
491 | ||
492 | /* True if CPU has a ror instruction. */ | |
493 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
494 | ||
dd3cbb7e NC |
495 | /* True if CPU has seq/sne and seqi/snei instructions. */ |
496 | #define CPU_HAS_SEQ(CPU) ((CPU) == CPU_OCTEON) | |
497 | ||
b19e8a9b AN |
498 | /* True if CPU does not implement the all the coprocessor insns. For these |
499 | CPUs only those COP insns are accepted that are explicitly marked to be | |
500 | available on the CPU. ISA membership for COP insns is ignored. */ | |
501 | #define NO_ISA_COP(CPU) ((CPU) == CPU_OCTEON) | |
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 | ||
573 | /* Returns true for a (non floating-point) coprocessor instruction. Reading | |
574 | or writing the condition code is only possible on the coprocessors and | |
575 | these insns are not marked with INSN_COP. Thus for these insns use the | |
a242dc0d | 576 | condition-code flags. */ |
b19e8a9b AN |
577 | #define COP_INSN(PINFO) \ |
578 | (PINFO != INSN_MACRO \ | |
a242dc0d AN |
579 | && ((PINFO) & (FP_S | FP_D)) == 0 \ |
580 | && ((PINFO) & (INSN_COP | INSN_READ_COND_CODE | INSN_WRITE_COND_CODE))) | |
6b76fefe | 581 | |
df58fc94 RS |
582 | /* Whether code compression (either of the MIPS16 or the microMIPS ASEs) |
583 | has been selected. This implies, in particular, that addresses of text | |
584 | labels have their LSB set. */ | |
585 | #define HAVE_CODE_COMPRESSION \ | |
586 | ((mips_opts.mips16 | mips_opts.micromips) != 0) | |
587 | ||
252b5132 RH |
588 | /* MIPS PIC level. */ |
589 | ||
a161fe53 | 590 | enum mips_pic_level mips_pic; |
252b5132 | 591 | |
c9914766 | 592 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 593 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 594 | static int mips_big_got = 0; |
252b5132 RH |
595 | |
596 | /* 1 if trap instructions should used for overflow rather than break | |
597 | instructions. */ | |
c9914766 | 598 | static int mips_trap = 0; |
252b5132 | 599 | |
119d663a | 600 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 601 | by assembling two single width halves into two single width floating |
119d663a NC |
602 | point registers which just happen to alias the double width destination |
603 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 604 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
605 | automatically at assemble time. */ |
606 | static int mips_disable_float_construction; | |
607 | ||
252b5132 RH |
608 | /* Non-zero if any .set noreorder directives were used. */ |
609 | ||
610 | static int mips_any_noreorder; | |
611 | ||
6b76fefe CM |
612 | /* Non-zero if nops should be inserted when the register referenced in |
613 | an mfhi/mflo instruction is read in the next two instructions. */ | |
614 | static int mips_7000_hilo_fix; | |
615 | ||
02ffd3e4 | 616 | /* The size of objects in the small data section. */ |
156c2f8b | 617 | static unsigned int g_switch_value = 8; |
252b5132 RH |
618 | /* Whether the -G option was used. */ |
619 | static int g_switch_seen = 0; | |
620 | ||
621 | #define N_RMASK 0xc4 | |
622 | #define N_VFP 0xd4 | |
623 | ||
624 | /* If we can determine in advance that GP optimization won't be | |
625 | possible, we can skip the relaxation stuff that tries to produce | |
626 | GP-relative references. This makes delay slot optimization work | |
627 | better. | |
628 | ||
629 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
630 | gcc output. It needs to guess right for gcc, otherwise gcc |
631 | will put what it thinks is a GP-relative instruction in a branch | |
632 | delay slot. | |
252b5132 RH |
633 | |
634 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
635 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 636 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
637 | |
638 | /* handle of the OPCODE hash table */ | |
639 | static struct hash_control *op_hash = NULL; | |
640 | ||
641 | /* The opcode hash table we use for the mips16. */ | |
642 | static struct hash_control *mips16_op_hash = NULL; | |
643 | ||
df58fc94 RS |
644 | /* The opcode hash table we use for the microMIPS ASE. */ |
645 | static struct hash_control *micromips_op_hash = NULL; | |
646 | ||
252b5132 RH |
647 | /* This array holds the chars that always start a comment. If the |
648 | pre-processor is disabled, these aren't very useful */ | |
649 | const char comment_chars[] = "#"; | |
650 | ||
651 | /* This array holds the chars that only start a comment at the beginning of | |
652 | a line. If the line seems to have the form '# 123 filename' | |
653 | .line and .file directives will appear in the pre-processed output */ | |
654 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
655 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 656 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
657 | /* Also note that C style comments are always supported. */ |
658 | const char line_comment_chars[] = "#"; | |
659 | ||
bdaaa2e1 | 660 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 661 | const char line_separator_chars[] = ";"; |
252b5132 RH |
662 | |
663 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
664 | const char EXP_CHARS[] = "eE"; | |
665 | ||
666 | /* Chars that mean this number is a floating point constant */ | |
667 | /* As in 0f12.456 */ | |
668 | /* or 0d1.2345e12 */ | |
669 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
670 | ||
671 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
672 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
673 | but nothing is ideal around here. | |
674 | */ | |
675 | ||
676 | static char *insn_error; | |
677 | ||
678 | static int auto_align = 1; | |
679 | ||
680 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
681 | offset in the stack frame from which to restore the $gp register. | |
682 | This is set by the .cprestore pseudo-op, and saved in this | |
683 | variable. */ | |
684 | static offsetT mips_cprestore_offset = -1; | |
685 | ||
67c1ffbe | 686 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 687 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 688 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
689 | static offsetT mips_cpreturn_offset = -1; |
690 | static int mips_cpreturn_register = -1; | |
691 | static int mips_gp_register = GP; | |
def2e0dd | 692 | static int mips_gprel_offset = 0; |
6478892d | 693 | |
7a621144 DJ |
694 | /* Whether mips_cprestore_offset has been set in the current function |
695 | (or whether it has already been warned about, if not). */ | |
696 | static int mips_cprestore_valid = 0; | |
697 | ||
252b5132 RH |
698 | /* This is the register which holds the stack frame, as set by the |
699 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
700 | static int mips_frame_reg = SP; | |
701 | ||
7a621144 DJ |
702 | /* Whether mips_frame_reg has been set in the current function |
703 | (or whether it has already been warned about, if not). */ | |
704 | static int mips_frame_reg_valid = 0; | |
705 | ||
252b5132 RH |
706 | /* To output NOP instructions correctly, we need to keep information |
707 | about the previous two instructions. */ | |
708 | ||
709 | /* Whether we are optimizing. The default value of 2 means to remove | |
710 | unneeded NOPs and swap branch instructions when possible. A value | |
711 | of 1 means to not swap branches. A value of 0 means to always | |
712 | insert NOPs. */ | |
713 | static int mips_optimize = 2; | |
714 | ||
715 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
716 | equivalent to seeing no -g option at all. */ | |
717 | static int mips_debug = 0; | |
718 | ||
7d8e00cf RS |
719 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
720 | #define MAX_VR4130_NOPS 4 | |
721 | ||
722 | /* The maximum number of NOPs needed to fill delay slots. */ | |
723 | #define MAX_DELAY_NOPS 2 | |
724 | ||
725 | /* The maximum number of NOPs needed for any purpose. */ | |
726 | #define MAX_NOPS 4 | |
71400594 RS |
727 | |
728 | /* A list of previous instructions, with index 0 being the most recent. | |
729 | We need to look back MAX_NOPS instructions when filling delay slots | |
730 | or working around processor errata. We need to look back one | |
731 | instruction further if we're thinking about using history[0] to | |
732 | fill a branch delay slot. */ | |
733 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 734 | |
1e915849 | 735 | /* Nop instructions used by emit_nop. */ |
df58fc94 RS |
736 | static struct mips_cl_insn nop_insn; |
737 | static struct mips_cl_insn mips16_nop_insn; | |
738 | static struct mips_cl_insn micromips_nop16_insn; | |
739 | static struct mips_cl_insn micromips_nop32_insn; | |
1e915849 RS |
740 | |
741 | /* The appropriate nop for the current mode. */ | |
df58fc94 RS |
742 | #define NOP_INSN (mips_opts.mips16 ? &mips16_nop_insn \ |
743 | : (mips_opts.micromips ? µmips_nop16_insn : &nop_insn)) | |
744 | ||
745 | /* The size of NOP_INSN in bytes. */ | |
746 | #define NOP_INSN_SIZE (HAVE_CODE_COMPRESSION ? 2 : 4) | |
252b5132 | 747 | |
252b5132 RH |
748 | /* If this is set, it points to a frag holding nop instructions which |
749 | were inserted before the start of a noreorder section. If those | |
750 | nops turn out to be unnecessary, the size of the frag can be | |
751 | decreased. */ | |
752 | static fragS *prev_nop_frag; | |
753 | ||
754 | /* The number of nop instructions we created in prev_nop_frag. */ | |
755 | static int prev_nop_frag_holds; | |
756 | ||
757 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 758 | prev_nop_frag. */ |
252b5132 RH |
759 | static int prev_nop_frag_required; |
760 | ||
761 | /* The number of instructions we've seen since prev_nop_frag. */ | |
762 | static int prev_nop_frag_since; | |
763 | ||
764 | /* For ECOFF and ELF, relocations against symbols are done in two | |
765 | parts, with a HI relocation and a LO relocation. Each relocation | |
766 | has only 16 bits of space to store an addend. This means that in | |
767 | order for the linker to handle carries correctly, it must be able | |
768 | to locate both the HI and the LO relocation. This means that the | |
769 | relocations must appear in order in the relocation table. | |
770 | ||
771 | In order to implement this, we keep track of each unmatched HI | |
772 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 773 | corresponding LO relocation. */ |
252b5132 | 774 | |
e972090a NC |
775 | struct mips_hi_fixup |
776 | { | |
252b5132 RH |
777 | /* Next HI fixup. */ |
778 | struct mips_hi_fixup *next; | |
779 | /* This fixup. */ | |
780 | fixS *fixp; | |
781 | /* The section this fixup is in. */ | |
782 | segT seg; | |
783 | }; | |
784 | ||
785 | /* The list of unmatched HI relocs. */ | |
786 | ||
787 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
788 | ||
64bdfcaf RS |
789 | /* The frag containing the last explicit relocation operator. |
790 | Null if explicit relocations have not been used. */ | |
791 | ||
792 | static fragS *prev_reloc_op_frag; | |
793 | ||
252b5132 RH |
794 | /* Map normal MIPS register numbers to mips16 register numbers. */ |
795 | ||
796 | #define X ILLEGAL_REG | |
e972090a NC |
797 | static const int mips32_to_16_reg_map[] = |
798 | { | |
252b5132 RH |
799 | X, X, 2, 3, 4, 5, 6, 7, |
800 | X, X, X, X, X, X, X, X, | |
801 | 0, 1, X, X, X, X, X, X, | |
802 | X, X, X, X, X, X, X, X | |
803 | }; | |
804 | #undef X | |
805 | ||
806 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
807 | ||
e972090a NC |
808 | static const unsigned int mips16_to_32_reg_map[] = |
809 | { | |
252b5132 RH |
810 | 16, 17, 2, 3, 4, 5, 6, 7 |
811 | }; | |
60b63b72 | 812 | |
df58fc94 RS |
813 | /* Map normal MIPS register numbers to microMIPS register numbers. */ |
814 | ||
815 | #define mips32_to_micromips_reg_b_map mips32_to_16_reg_map | |
816 | #define mips32_to_micromips_reg_c_map mips32_to_16_reg_map | |
817 | #define mips32_to_micromips_reg_d_map mips32_to_16_reg_map | |
818 | #define mips32_to_micromips_reg_e_map mips32_to_16_reg_map | |
819 | #define mips32_to_micromips_reg_f_map mips32_to_16_reg_map | |
820 | #define mips32_to_micromips_reg_g_map mips32_to_16_reg_map | |
821 | #define mips32_to_micromips_reg_l_map mips32_to_16_reg_map | |
822 | ||
823 | #define X ILLEGAL_REG | |
824 | /* reg type h: 4, 5, 6. */ | |
825 | static const int mips32_to_micromips_reg_h_map[] = | |
826 | { | |
827 | X, X, X, X, 4, 5, 6, X, | |
828 | X, X, X, X, X, X, X, X, | |
829 | X, X, X, X, X, X, X, X, | |
830 | X, X, X, X, X, X, X, X | |
831 | }; | |
832 | ||
833 | /* reg type m: 0, 17, 2, 3, 16, 18, 19, 20. */ | |
834 | static const int mips32_to_micromips_reg_m_map[] = | |
835 | { | |
836 | 0, X, 2, 3, X, X, X, X, | |
837 | X, X, X, X, X, X, X, X, | |
838 | 4, 1, 5, 6, 7, X, X, X, | |
839 | X, X, X, X, X, X, X, X | |
840 | }; | |
841 | ||
842 | /* reg type q: 0, 2-7. 17. */ | |
843 | static const int mips32_to_micromips_reg_q_map[] = | |
844 | { | |
845 | 0, X, 2, 3, 4, 5, 6, 7, | |
846 | X, X, X, X, X, X, X, X, | |
847 | X, 1, X, X, X, X, X, X, | |
848 | X, X, X, X, X, X, X, X | |
849 | }; | |
850 | ||
851 | #define mips32_to_micromips_reg_n_map mips32_to_micromips_reg_m_map | |
852 | #undef X | |
853 | ||
854 | /* Map microMIPS register numbers to normal MIPS register numbers. */ | |
855 | ||
856 | #define micromips_to_32_reg_b_map mips16_to_32_reg_map | |
857 | #define micromips_to_32_reg_c_map mips16_to_32_reg_map | |
858 | #define micromips_to_32_reg_d_map mips16_to_32_reg_map | |
859 | #define micromips_to_32_reg_e_map mips16_to_32_reg_map | |
860 | #define micromips_to_32_reg_f_map mips16_to_32_reg_map | |
861 | #define micromips_to_32_reg_g_map mips16_to_32_reg_map | |
862 | ||
863 | /* The microMIPS registers with type h. */ | |
864 | static const unsigned int micromips_to_32_reg_h_map[] = | |
865 | { | |
866 | 5, 5, 6, 4, 4, 4, 4, 4 | |
867 | }; | |
868 | ||
869 | /* The microMIPS registers with type i. */ | |
870 | static const unsigned int micromips_to_32_reg_i_map[] = | |
871 | { | |
872 | 6, 7, 7, 21, 22, 5, 6, 7 | |
873 | }; | |
874 | ||
875 | #define micromips_to_32_reg_l_map mips16_to_32_reg_map | |
876 | ||
877 | /* The microMIPS registers with type m. */ | |
878 | static const unsigned int micromips_to_32_reg_m_map[] = | |
879 | { | |
880 | 0, 17, 2, 3, 16, 18, 19, 20 | |
881 | }; | |
882 | ||
883 | #define micromips_to_32_reg_n_map micromips_to_32_reg_m_map | |
884 | ||
885 | /* The microMIPS registers with type q. */ | |
886 | static const unsigned int micromips_to_32_reg_q_map[] = | |
887 | { | |
888 | 0, 17, 2, 3, 4, 5, 6, 7 | |
889 | }; | |
890 | ||
891 | /* microMIPS imm type B. */ | |
892 | static const int micromips_imm_b_map[] = | |
893 | { | |
894 | 1, 4, 8, 12, 16, 20, 24, -1 | |
895 | }; | |
896 | ||
897 | /* microMIPS imm type C. */ | |
898 | static const int micromips_imm_c_map[] = | |
899 | { | |
900 | 128, 1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 255, 32768, 65535 | |
901 | }; | |
902 | ||
71400594 RS |
903 | /* Classifies the kind of instructions we're interested in when |
904 | implementing -mfix-vr4120. */ | |
c67a084a NC |
905 | enum fix_vr4120_class |
906 | { | |
71400594 RS |
907 | FIX_VR4120_MACC, |
908 | FIX_VR4120_DMACC, | |
909 | FIX_VR4120_MULT, | |
910 | FIX_VR4120_DMULT, | |
911 | FIX_VR4120_DIV, | |
912 | FIX_VR4120_MTHILO, | |
913 | NUM_FIX_VR4120_CLASSES | |
914 | }; | |
915 | ||
c67a084a NC |
916 | /* ...likewise -mfix-loongson2f-jump. */ |
917 | static bfd_boolean mips_fix_loongson2f_jump; | |
918 | ||
919 | /* ...likewise -mfix-loongson2f-nop. */ | |
920 | static bfd_boolean mips_fix_loongson2f_nop; | |
921 | ||
922 | /* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed. */ | |
923 | static bfd_boolean mips_fix_loongson2f; | |
924 | ||
71400594 RS |
925 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if |
926 | there must be at least one other instruction between an instruction | |
927 | of type X and an instruction of type Y. */ | |
928 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
929 | ||
930 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 931 | static int mips_fix_vr4120; |
4a6a3df4 | 932 | |
7d8e00cf RS |
933 | /* ...likewise -mfix-vr4130. */ |
934 | static int mips_fix_vr4130; | |
935 | ||
6a32d874 CM |
936 | /* ...likewise -mfix-24k. */ |
937 | static int mips_fix_24k; | |
938 | ||
d954098f DD |
939 | /* ...likewise -mfix-cn63xxp1 */ |
940 | static bfd_boolean mips_fix_cn63xxp1; | |
941 | ||
4a6a3df4 AO |
942 | /* We don't relax branches by default, since this causes us to expand |
943 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
944 | fail to compute the offset before expanding the macro to the most | |
945 | efficient expansion. */ | |
946 | ||
947 | static int mips_relax_branch; | |
252b5132 | 948 | \f |
4d7206a2 RS |
949 | /* The expansion of many macros depends on the type of symbol that |
950 | they refer to. For example, when generating position-dependent code, | |
951 | a macro that refers to a symbol may have two different expansions, | |
952 | one which uses GP-relative addresses and one which uses absolute | |
953 | addresses. When generating SVR4-style PIC, a macro may have | |
954 | different expansions for local and global symbols. | |
955 | ||
956 | We handle these situations by generating both sequences and putting | |
957 | them in variant frags. In position-dependent code, the first sequence | |
958 | will be the GP-relative one and the second sequence will be the | |
959 | absolute one. In SVR4 PIC, the first sequence will be for global | |
960 | symbols and the second will be for local symbols. | |
961 | ||
584892a6 RS |
962 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
963 | SECOND are the lengths of the two sequences in bytes. These fields | |
964 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
965 | the subtype has the following flags: | |
4d7206a2 | 966 | |
584892a6 RS |
967 | RELAX_USE_SECOND |
968 | Set if it has been decided that we should use the second | |
969 | sequence instead of the first. | |
970 | ||
971 | RELAX_SECOND_LONGER | |
972 | Set in the first variant frag if the macro's second implementation | |
973 | is longer than its first. This refers to the macro as a whole, | |
974 | not an individual relaxation. | |
975 | ||
976 | RELAX_NOMACRO | |
977 | Set in the first variant frag if the macro appeared in a .set nomacro | |
978 | block and if one alternative requires a warning but the other does not. | |
979 | ||
980 | RELAX_DELAY_SLOT | |
981 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
982 | delay slot. | |
4d7206a2 | 983 | |
df58fc94 RS |
984 | RELAX_DELAY_SLOT_16BIT |
985 | Like RELAX_DELAY_SLOT, but indicates that the delay slot requires a | |
986 | 16-bit instruction. | |
987 | ||
988 | RELAX_DELAY_SLOT_SIZE_FIRST | |
989 | Like RELAX_DELAY_SLOT, but indicates that the first implementation of | |
990 | the macro is of the wrong size for the branch delay slot. | |
991 | ||
992 | RELAX_DELAY_SLOT_SIZE_SECOND | |
993 | Like RELAX_DELAY_SLOT, but indicates that the second implementation of | |
994 | the macro is of the wrong size for the branch delay slot. | |
995 | ||
4d7206a2 RS |
996 | The frag's "opcode" points to the first fixup for relaxable code. |
997 | ||
998 | Relaxable macros are generated using a sequence such as: | |
999 | ||
1000 | relax_start (SYMBOL); | |
1001 | ... generate first expansion ... | |
1002 | relax_switch (); | |
1003 | ... generate second expansion ... | |
1004 | relax_end (); | |
1005 | ||
1006 | The code and fixups for the unwanted alternative are discarded | |
1007 | by md_convert_frag. */ | |
584892a6 | 1008 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 1009 | |
584892a6 RS |
1010 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
1011 | #define RELAX_SECOND(X) ((X) & 0xff) | |
1012 | #define RELAX_USE_SECOND 0x10000 | |
1013 | #define RELAX_SECOND_LONGER 0x20000 | |
1014 | #define RELAX_NOMACRO 0x40000 | |
1015 | #define RELAX_DELAY_SLOT 0x80000 | |
df58fc94 RS |
1016 | #define RELAX_DELAY_SLOT_16BIT 0x100000 |
1017 | #define RELAX_DELAY_SLOT_SIZE_FIRST 0x200000 | |
1018 | #define RELAX_DELAY_SLOT_SIZE_SECOND 0x400000 | |
252b5132 | 1019 | |
4a6a3df4 AO |
1020 | /* Branch without likely bit. If label is out of range, we turn: |
1021 | ||
1022 | beq reg1, reg2, label | |
1023 | delay slot | |
1024 | ||
1025 | into | |
1026 | ||
1027 | bne reg1, reg2, 0f | |
1028 | nop | |
1029 | j label | |
1030 | 0: delay slot | |
1031 | ||
1032 | with the following opcode replacements: | |
1033 | ||
1034 | beq <-> bne | |
1035 | blez <-> bgtz | |
1036 | bltz <-> bgez | |
1037 | bc1f <-> bc1t | |
1038 | ||
1039 | bltzal <-> bgezal (with jal label instead of j label) | |
1040 | ||
1041 | Even though keeping the delay slot instruction in the delay slot of | |
1042 | the branch would be more efficient, it would be very tricky to do | |
1043 | correctly, because we'd have to introduce a variable frag *after* | |
1044 | the delay slot instruction, and expand that instead. Let's do it | |
1045 | the easy way for now, even if the branch-not-taken case now costs | |
1046 | one additional instruction. Out-of-range branches are not supposed | |
1047 | to be common, anyway. | |
1048 | ||
1049 | Branch likely. If label is out of range, we turn: | |
1050 | ||
1051 | beql reg1, reg2, label | |
1052 | delay slot (annulled if branch not taken) | |
1053 | ||
1054 | into | |
1055 | ||
1056 | beql reg1, reg2, 1f | |
1057 | nop | |
1058 | beql $0, $0, 2f | |
1059 | nop | |
1060 | 1: j[al] label | |
1061 | delay slot (executed only if branch taken) | |
1062 | 2: | |
1063 | ||
1064 | It would be possible to generate a shorter sequence by losing the | |
1065 | likely bit, generating something like: | |
b34976b6 | 1066 | |
4a6a3df4 AO |
1067 | bne reg1, reg2, 0f |
1068 | nop | |
1069 | j[al] label | |
1070 | delay slot (executed only if branch taken) | |
1071 | 0: | |
1072 | ||
1073 | beql -> bne | |
1074 | bnel -> beq | |
1075 | blezl -> bgtz | |
1076 | bgtzl -> blez | |
1077 | bltzl -> bgez | |
1078 | bgezl -> bltz | |
1079 | bc1fl -> bc1t | |
1080 | bc1tl -> bc1f | |
1081 | ||
1082 | bltzall -> bgezal (with jal label instead of j label) | |
1083 | bgezall -> bltzal (ditto) | |
1084 | ||
1085 | ||
1086 | but it's not clear that it would actually improve performance. */ | |
66b3e8da MR |
1087 | #define RELAX_BRANCH_ENCODE(at, uncond, likely, link, toofar) \ |
1088 | ((relax_substateT) \ | |
1089 | (0xc0000000 \ | |
1090 | | ((at) & 0x1f) \ | |
1091 | | ((toofar) ? 0x20 : 0) \ | |
1092 | | ((link) ? 0x40 : 0) \ | |
1093 | | ((likely) ? 0x80 : 0) \ | |
1094 | | ((uncond) ? 0x100 : 0))) | |
4a6a3df4 | 1095 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
66b3e8da MR |
1096 | #define RELAX_BRANCH_UNCOND(i) (((i) & 0x100) != 0) |
1097 | #define RELAX_BRANCH_LIKELY(i) (((i) & 0x80) != 0) | |
1098 | #define RELAX_BRANCH_LINK(i) (((i) & 0x40) != 0) | |
1099 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 0x20) != 0) | |
1100 | #define RELAX_BRANCH_AT(i) ((i) & 0x1f) | |
4a6a3df4 | 1101 | |
252b5132 RH |
1102 | /* For mips16 code, we use an entirely different form of relaxation. |
1103 | mips16 supports two versions of most instructions which take | |
1104 | immediate values: a small one which takes some small value, and a | |
1105 | larger one which takes a 16 bit value. Since branches also follow | |
1106 | this pattern, relaxing these values is required. | |
1107 | ||
1108 | We can assemble both mips16 and normal MIPS code in a single | |
1109 | object. Therefore, we need to support this type of relaxation at | |
1110 | the same time that we support the relaxation described above. We | |
1111 | use the high bit of the subtype field to distinguish these cases. | |
1112 | ||
1113 | The information we store for this type of relaxation is the | |
1114 | argument code found in the opcode file for this relocation, whether | |
1115 | the user explicitly requested a small or extended form, and whether | |
1116 | the relocation is in a jump or jal delay slot. That tells us the | |
1117 | size of the value, and how it should be stored. We also store | |
1118 | whether the fragment is considered to be extended or not. We also | |
1119 | store whether this is known to be a branch to a different section, | |
1120 | whether we have tried to relax this frag yet, and whether we have | |
1121 | ever extended a PC relative fragment because of a shift count. */ | |
1122 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
1123 | (0x80000000 \ | |
1124 | | ((type) & 0xff) \ | |
1125 | | ((small) ? 0x100 : 0) \ | |
1126 | | ((ext) ? 0x200 : 0) \ | |
1127 | | ((dslot) ? 0x400 : 0) \ | |
1128 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 1129 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
1130 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
1131 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
1132 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
1133 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
1134 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
1135 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
1136 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
1137 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
1138 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
1139 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
1140 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 | 1141 | |
df58fc94 RS |
1142 | /* For microMIPS code, we use relaxation similar to one we use for |
1143 | MIPS16 code. Some instructions that take immediate values support | |
1144 | two encodings: a small one which takes some small value, and a | |
1145 | larger one which takes a 16 bit value. As some branches also follow | |
1146 | this pattern, relaxing these values is required. | |
1147 | ||
1148 | We can assemble both microMIPS and normal MIPS code in a single | |
1149 | object. Therefore, we need to support this type of relaxation at | |
1150 | the same time that we support the relaxation described above. We | |
1151 | use one of the high bits of the subtype field to distinguish these | |
1152 | cases. | |
1153 | ||
1154 | The information we store for this type of relaxation is the argument | |
1155 | code found in the opcode file for this relocation, the register | |
1156 | selected as the assembler temporary, whether the user explicitly | |
1157 | requested a 16-bit form, whether the branch is unconditional, whether | |
1158 | it is compact, whether it stores the link address implicitly in $ra, | |
1159 | whether relaxation of out-of-range 32-bit branches to a sequence of | |
1160 | instructions is enabled, and whether the displacement of a branch is | |
1161 | too large to fit as an immediate argument of a 16-bit and a 32-bit | |
1162 | branch, respectively. */ | |
1163 | #define RELAX_MICROMIPS_ENCODE(type, at, u16bit, uncond, compact, link, \ | |
1164 | relax32, toofar16, toofar32) \ | |
1165 | (0x40000000 \ | |
1166 | | ((type) & 0xff) \ | |
1167 | | (((at) & 0x1f) << 8) \ | |
1168 | | ((u16bit) ? 0x2000 : 0) \ | |
1169 | | ((uncond) ? 0x4000 : 0) \ | |
1170 | | ((compact) ? 0x8000 : 0) \ | |
1171 | | ((link) ? 0x10000 : 0) \ | |
1172 | | ((relax32) ? 0x20000 : 0) \ | |
1173 | | ((toofar16) ? 0x40000 : 0) \ | |
1174 | | ((toofar32) ? 0x80000 : 0)) | |
1175 | #define RELAX_MICROMIPS_P(i) (((i) & 0xc0000000) == 0x40000000) | |
1176 | #define RELAX_MICROMIPS_TYPE(i) ((i) & 0xff) | |
1177 | #define RELAX_MICROMIPS_AT(i) (((i) >> 8) & 0x1f) | |
1178 | #define RELAX_MICROMIPS_U16BIT(i) (((i) & 0x2000) != 0) | |
1179 | #define RELAX_MICROMIPS_UNCOND(i) (((i) & 0x4000) != 0) | |
1180 | #define RELAX_MICROMIPS_COMPACT(i) (((i) & 0x8000) != 0) | |
1181 | #define RELAX_MICROMIPS_LINK(i) (((i) & 0x10000) != 0) | |
1182 | #define RELAX_MICROMIPS_RELAX32(i) (((i) & 0x20000) != 0) | |
1183 | ||
1184 | #define RELAX_MICROMIPS_TOOFAR16(i) (((i) & 0x40000) != 0) | |
1185 | #define RELAX_MICROMIPS_MARK_TOOFAR16(i) ((i) | 0x40000) | |
1186 | #define RELAX_MICROMIPS_CLEAR_TOOFAR16(i) ((i) & ~0x40000) | |
1187 | #define RELAX_MICROMIPS_TOOFAR32(i) (((i) & 0x80000) != 0) | |
1188 | #define RELAX_MICROMIPS_MARK_TOOFAR32(i) ((i) | 0x80000) | |
1189 | #define RELAX_MICROMIPS_CLEAR_TOOFAR32(i) ((i) & ~0x80000) | |
1190 | ||
885add95 CD |
1191 | /* Is the given value a sign-extended 32-bit value? */ |
1192 | #define IS_SEXT_32BIT_NUM(x) \ | |
1193 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
1194 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
1195 | ||
1196 | /* Is the given value a sign-extended 16-bit value? */ | |
1197 | #define IS_SEXT_16BIT_NUM(x) \ | |
1198 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
1199 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
1200 | ||
df58fc94 RS |
1201 | /* Is the given value a sign-extended 12-bit value? */ |
1202 | #define IS_SEXT_12BIT_NUM(x) \ | |
1203 | (((((x) & 0xfff) ^ 0x800LL) - 0x800LL) == (x)) | |
1204 | ||
2051e8c4 MR |
1205 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
1206 | #define IS_ZEXT_32BIT_NUM(x) \ | |
1207 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
1208 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
1209 | ||
bf12938e RS |
1210 | /* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in |
1211 | VALUE << SHIFT. VALUE is evaluated exactly once. */ | |
1212 | #define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \ | |
1213 | (STRUCT) = (((STRUCT) & ~((MASK) << (SHIFT))) \ | |
1214 | | (((VALUE) & (MASK)) << (SHIFT))) | |
1215 | ||
1216 | /* Extract bits MASK << SHIFT from STRUCT and shift them right | |
1217 | SHIFT places. */ | |
1218 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
1219 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
1220 | ||
1221 | /* Change INSN's opcode so that the operand given by FIELD has value VALUE. | |
1222 | INSN is a mips_cl_insn structure and VALUE is evaluated exactly once. | |
1223 | ||
1224 | include/opcode/mips.h specifies operand fields using the macros | |
1225 | OP_MASK_<FIELD> and OP_SH_<FIELD>. The MIPS16 equivalents start | |
1226 | with "MIPS16OP" instead of "OP". */ | |
df58fc94 RS |
1227 | #define INSERT_OPERAND(MICROMIPS, FIELD, INSN, VALUE) \ |
1228 | do \ | |
1229 | if (!(MICROMIPS)) \ | |
1230 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1231 | OP_MASK_##FIELD, OP_SH_##FIELD); \ | |
1232 | else \ | |
1233 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1234 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD); \ | |
1235 | while (0) | |
bf12938e RS |
1236 | #define MIPS16_INSERT_OPERAND(FIELD, INSN, VALUE) \ |
1237 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1238 | MIPS16OP_MASK_##FIELD, MIPS16OP_SH_##FIELD) | |
1239 | ||
1240 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ | |
df58fc94 RS |
1241 | #define EXTRACT_OPERAND(MICROMIPS, FIELD, INSN) \ |
1242 | (!(MICROMIPS) \ | |
1243 | ? EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) \ | |
1244 | : EXTRACT_BITS ((INSN).insn_opcode, \ | |
1245 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD)) | |
bf12938e RS |
1246 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ |
1247 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
1248 | MIPS16OP_MASK_##FIELD, \ | |
1249 | MIPS16OP_SH_##FIELD) | |
4d7206a2 | 1250 | \f |
df58fc94 RS |
1251 | /* Whether or not we are emitting a branch-likely macro. */ |
1252 | static bfd_boolean emit_branch_likely_macro = FALSE; | |
1253 | ||
4d7206a2 RS |
1254 | /* Global variables used when generating relaxable macros. See the |
1255 | comment above RELAX_ENCODE for more details about how relaxation | |
1256 | is used. */ | |
1257 | static struct { | |
1258 | /* 0 if we're not emitting a relaxable macro. | |
1259 | 1 if we're emitting the first of the two relaxation alternatives. | |
1260 | 2 if we're emitting the second alternative. */ | |
1261 | int sequence; | |
1262 | ||
1263 | /* The first relaxable fixup in the current frag. (In other words, | |
1264 | the first fixup that refers to relaxable code.) */ | |
1265 | fixS *first_fixup; | |
1266 | ||
1267 | /* sizes[0] says how many bytes of the first alternative are stored in | |
1268 | the current frag. Likewise sizes[1] for the second alternative. */ | |
1269 | unsigned int sizes[2]; | |
1270 | ||
1271 | /* The symbol on which the choice of sequence depends. */ | |
1272 | symbolS *symbol; | |
1273 | } mips_relax; | |
252b5132 | 1274 | \f |
584892a6 RS |
1275 | /* Global variables used to decide whether a macro needs a warning. */ |
1276 | static struct { | |
1277 | /* True if the macro is in a branch delay slot. */ | |
1278 | bfd_boolean delay_slot_p; | |
1279 | ||
df58fc94 RS |
1280 | /* Set to the length in bytes required if the macro is in a delay slot |
1281 | that requires a specific length of instruction, otherwise zero. */ | |
1282 | unsigned int delay_slot_length; | |
1283 | ||
584892a6 RS |
1284 | /* For relaxable macros, sizes[0] is the length of the first alternative |
1285 | in bytes and sizes[1] is the length of the second alternative. | |
1286 | For non-relaxable macros, both elements give the length of the | |
1287 | macro in bytes. */ | |
1288 | unsigned int sizes[2]; | |
1289 | ||
df58fc94 RS |
1290 | /* For relaxable macros, first_insn_sizes[0] is the length of the first |
1291 | instruction of the first alternative in bytes and first_insn_sizes[1] | |
1292 | is the length of the first instruction of the second alternative. | |
1293 | For non-relaxable macros, both elements give the length of the first | |
1294 | instruction in bytes. | |
1295 | ||
1296 | Set to zero if we haven't yet seen the first instruction. */ | |
1297 | unsigned int first_insn_sizes[2]; | |
1298 | ||
1299 | /* For relaxable macros, insns[0] is the number of instructions for the | |
1300 | first alternative and insns[1] is the number of instructions for the | |
1301 | second alternative. | |
1302 | ||
1303 | For non-relaxable macros, both elements give the number of | |
1304 | instructions for the macro. */ | |
1305 | unsigned int insns[2]; | |
1306 | ||
584892a6 RS |
1307 | /* The first variant frag for this macro. */ |
1308 | fragS *first_frag; | |
1309 | } mips_macro_warning; | |
1310 | \f | |
252b5132 RH |
1311 | /* Prototypes for static functions. */ |
1312 | ||
17a2f251 | 1313 | #define internalError() \ |
252b5132 | 1314 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) |
252b5132 RH |
1315 | |
1316 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
1317 | ||
b34976b6 | 1318 | static void append_insn |
df58fc94 RS |
1319 | (struct mips_cl_insn *, expressionS *, bfd_reloc_code_real_type *, |
1320 | bfd_boolean expansionp); | |
7d10b47d | 1321 | static void mips_no_prev_insn (void); |
c67a084a | 1322 | static void macro_build (expressionS *, const char *, const char *, ...); |
b34976b6 | 1323 | static void mips16_macro_build |
03ea81db | 1324 | (expressionS *, const char *, const char *, va_list *); |
67c0d1eb | 1325 | static void load_register (int, expressionS *, int); |
584892a6 RS |
1326 | static void macro_start (void); |
1327 | static void macro_end (void); | |
17a2f251 TS |
1328 | static void macro (struct mips_cl_insn * ip); |
1329 | static void mips16_macro (struct mips_cl_insn * ip); | |
17a2f251 TS |
1330 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
1331 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 1332 | static void mips16_immed |
17a2f251 TS |
1333 | (char *, unsigned int, int, offsetT, bfd_boolean, bfd_boolean, bfd_boolean, |
1334 | unsigned long *, bfd_boolean *, unsigned short *); | |
5e0116d5 | 1335 | static size_t my_getSmallExpression |
17a2f251 TS |
1336 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1337 | static void my_getExpression (expressionS *, char *); | |
1338 | static void s_align (int); | |
1339 | static void s_change_sec (int); | |
1340 | static void s_change_section (int); | |
1341 | static void s_cons (int); | |
1342 | static void s_float_cons (int); | |
1343 | static void s_mips_globl (int); | |
1344 | static void s_option (int); | |
1345 | static void s_mipsset (int); | |
1346 | static void s_abicalls (int); | |
1347 | static void s_cpload (int); | |
1348 | static void s_cpsetup (int); | |
1349 | static void s_cplocal (int); | |
1350 | static void s_cprestore (int); | |
1351 | static void s_cpreturn (int); | |
741d6ea8 JM |
1352 | static void s_dtprelword (int); |
1353 | static void s_dtpreldword (int); | |
17a2f251 TS |
1354 | static void s_gpvalue (int); |
1355 | static void s_gpword (int); | |
1356 | static void s_gpdword (int); | |
1357 | static void s_cpadd (int); | |
1358 | static void s_insn (int); | |
1359 | static void md_obj_begin (void); | |
1360 | static void md_obj_end (void); | |
1361 | static void s_mips_ent (int); | |
1362 | static void s_mips_end (int); | |
1363 | static void s_mips_frame (int); | |
1364 | static void s_mips_mask (int reg_type); | |
1365 | static void s_mips_stab (int); | |
1366 | static void s_mips_weakext (int); | |
1367 | static void s_mips_file (int); | |
1368 | static void s_mips_loc (int); | |
1369 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1370 | static int relaxed_branch_length (fragS *, asection *, int); |
17a2f251 | 1371 | static int validate_mips_insn (const struct mips_opcode *); |
df58fc94 RS |
1372 | static int validate_micromips_insn (const struct mips_opcode *); |
1373 | static int relaxed_micromips_16bit_branch_length (fragS *, asection *, int); | |
1374 | static int relaxed_micromips_32bit_branch_length (fragS *, asection *, int); | |
e7af610e NC |
1375 | |
1376 | /* Table and functions used to map between CPU/ISA names, and | |
1377 | ISA levels, and CPU numbers. */ | |
1378 | ||
e972090a NC |
1379 | struct mips_cpu_info |
1380 | { | |
e7af610e | 1381 | const char *name; /* CPU or ISA name. */ |
ad3fea08 | 1382 | int flags; /* ASEs available, or ISA flag. */ |
e7af610e NC |
1383 | int isa; /* ISA level. */ |
1384 | int cpu; /* CPU number (default CPU if ISA). */ | |
1385 | }; | |
1386 | ||
ad3fea08 TS |
1387 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
1388 | #define MIPS_CPU_ASE_SMARTMIPS 0x0002 /* CPU implements SmartMIPS ASE */ | |
1389 | #define MIPS_CPU_ASE_DSP 0x0004 /* CPU implements DSP ASE */ | |
1390 | #define MIPS_CPU_ASE_MT 0x0008 /* CPU implements MT ASE */ | |
1391 | #define MIPS_CPU_ASE_MIPS3D 0x0010 /* CPU implements MIPS-3D ASE */ | |
1392 | #define MIPS_CPU_ASE_MDMX 0x0020 /* CPU implements MDMX ASE */ | |
8b082fb1 | 1393 | #define MIPS_CPU_ASE_DSPR2 0x0040 /* CPU implements DSP R2 ASE */ |
ad3fea08 | 1394 | |
17a2f251 TS |
1395 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1396 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1397 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 RH |
1398 | \f |
1399 | /* Pseudo-op table. | |
1400 | ||
1401 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1402 | should be defined here, but are currently unsupported: .alias, | |
1403 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1404 | ||
1405 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1406 | specific to the type of debugging information being generated, and | |
1407 | should be defined by the object format: .aent, .begin, .bend, | |
1408 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1409 | .vreg. | |
1410 | ||
1411 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1412 | not MIPS CPU specific, but are also not specific to the object file | |
1413 | format. This file is probably the best place to define them, but | |
d84bcf09 | 1414 | they are not currently supported: .asm0, .endr, .lab, .struct. */ |
252b5132 | 1415 | |
e972090a NC |
1416 | static const pseudo_typeS mips_pseudo_table[] = |
1417 | { | |
beae10d5 | 1418 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1419 | {"option", s_option, 0}, |
1420 | {"set", s_mipsset, 0}, | |
1421 | {"rdata", s_change_sec, 'r'}, | |
1422 | {"sdata", s_change_sec, 's'}, | |
1423 | {"livereg", s_ignore, 0}, | |
1424 | {"abicalls", s_abicalls, 0}, | |
1425 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1426 | {"cpsetup", s_cpsetup, 0}, |
1427 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1428 | {"cprestore", s_cprestore, 0}, |
6478892d | 1429 | {"cpreturn", s_cpreturn, 0}, |
741d6ea8 JM |
1430 | {"dtprelword", s_dtprelword, 0}, |
1431 | {"dtpreldword", s_dtpreldword, 0}, | |
6478892d | 1432 | {"gpvalue", s_gpvalue, 0}, |
252b5132 | 1433 | {"gpword", s_gpword, 0}, |
10181a0d | 1434 | {"gpdword", s_gpdword, 0}, |
252b5132 RH |
1435 | {"cpadd", s_cpadd, 0}, |
1436 | {"insn", s_insn, 0}, | |
1437 | ||
beae10d5 | 1438 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 | 1439 | chips. */ |
38a57ae7 | 1440 | {"asciiz", stringer, 8 + 1}, |
252b5132 RH |
1441 | {"bss", s_change_sec, 'b'}, |
1442 | {"err", s_err, 0}, | |
1443 | {"half", s_cons, 1}, | |
1444 | {"dword", s_cons, 3}, | |
1445 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1446 | {"origin", s_org, 0}, |
1447 | {"repeat", s_rept, 0}, | |
252b5132 | 1448 | |
998b3c36 MR |
1449 | /* For MIPS this is non-standard, but we define it for consistency. */ |
1450 | {"sbss", s_change_sec, 'B'}, | |
1451 | ||
beae10d5 | 1452 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1453 | here for one reason or another. */ |
1454 | {"align", s_align, 0}, | |
1455 | {"byte", s_cons, 0}, | |
1456 | {"data", s_change_sec, 'd'}, | |
1457 | {"double", s_float_cons, 'd'}, | |
1458 | {"float", s_float_cons, 'f'}, | |
1459 | {"globl", s_mips_globl, 0}, | |
1460 | {"global", s_mips_globl, 0}, | |
1461 | {"hword", s_cons, 1}, | |
1462 | {"int", s_cons, 2}, | |
1463 | {"long", s_cons, 2}, | |
1464 | {"octa", s_cons, 4}, | |
1465 | {"quad", s_cons, 3}, | |
cca86cc8 | 1466 | {"section", s_change_section, 0}, |
252b5132 RH |
1467 | {"short", s_cons, 1}, |
1468 | {"single", s_float_cons, 'f'}, | |
1469 | {"stabn", s_mips_stab, 'n'}, | |
1470 | {"text", s_change_sec, 't'}, | |
1471 | {"word", s_cons, 2}, | |
add56521 | 1472 | |
add56521 | 1473 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1474 | |
43841e91 | 1475 | { NULL, NULL, 0 }, |
252b5132 RH |
1476 | }; |
1477 | ||
e972090a NC |
1478 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1479 | { | |
beae10d5 KH |
1480 | /* These pseudo-ops should be defined by the object file format. |
1481 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1482 | {"aent", s_mips_ent, 1}, |
1483 | {"bgnb", s_ignore, 0}, | |
1484 | {"end", s_mips_end, 0}, | |
1485 | {"endb", s_ignore, 0}, | |
1486 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1487 | {"file", s_mips_file, 0}, |
252b5132 RH |
1488 | {"fmask", s_mips_mask, 'F'}, |
1489 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1490 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1491 | {"mask", s_mips_mask, 'R'}, |
1492 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1493 | { NULL, NULL, 0 }, |
252b5132 RH |
1494 | }; |
1495 | ||
3ae8dd8d MR |
1496 | /* Export the ABI address size for use by TC_ADDRESS_BYTES for the |
1497 | purpose of the `.dc.a' internal pseudo-op. */ | |
1498 | ||
1499 | int | |
1500 | mips_address_bytes (void) | |
1501 | { | |
1502 | return HAVE_64BIT_ADDRESSES ? 8 : 4; | |
1503 | } | |
1504 | ||
17a2f251 | 1505 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1506 | |
1507 | void | |
17a2f251 | 1508 | mips_pop_insert (void) |
252b5132 RH |
1509 | { |
1510 | pop_insert (mips_pseudo_table); | |
1511 | if (! ECOFF_DEBUGGING) | |
1512 | pop_insert (mips_nonecoff_pseudo_table); | |
1513 | } | |
1514 | \f | |
1515 | /* Symbols labelling the current insn. */ | |
1516 | ||
e972090a NC |
1517 | struct insn_label_list |
1518 | { | |
252b5132 RH |
1519 | struct insn_label_list *next; |
1520 | symbolS *label; | |
1521 | }; | |
1522 | ||
252b5132 | 1523 | static struct insn_label_list *free_insn_labels; |
742a56fe | 1524 | #define label_list tc_segment_info_data.labels |
252b5132 | 1525 | |
17a2f251 | 1526 | static void mips_clear_insn_labels (void); |
df58fc94 RS |
1527 | static void mips_mark_labels (void); |
1528 | static void mips_compressed_mark_labels (void); | |
252b5132 RH |
1529 | |
1530 | static inline void | |
17a2f251 | 1531 | mips_clear_insn_labels (void) |
252b5132 RH |
1532 | { |
1533 | register struct insn_label_list **pl; | |
a8dbcb85 | 1534 | segment_info_type *si; |
252b5132 | 1535 | |
a8dbcb85 TS |
1536 | if (now_seg) |
1537 | { | |
1538 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1539 | ; | |
1540 | ||
1541 | si = seg_info (now_seg); | |
1542 | *pl = si->label_list; | |
1543 | si->label_list = NULL; | |
1544 | } | |
252b5132 | 1545 | } |
a8dbcb85 | 1546 | |
df58fc94 RS |
1547 | /* Mark instruction labels in MIPS16/microMIPS mode. */ |
1548 | ||
1549 | static inline void | |
1550 | mips_mark_labels (void) | |
1551 | { | |
1552 | if (HAVE_CODE_COMPRESSION) | |
1553 | mips_compressed_mark_labels (); | |
1554 | } | |
252b5132 RH |
1555 | \f |
1556 | static char *expr_end; | |
1557 | ||
1558 | /* Expressions which appear in instructions. These are set by | |
1559 | mips_ip. */ | |
1560 | ||
1561 | static expressionS imm_expr; | |
5f74bc13 | 1562 | static expressionS imm2_expr; |
252b5132 RH |
1563 | static expressionS offset_expr; |
1564 | ||
1565 | /* Relocs associated with imm_expr and offset_expr. */ | |
1566 | ||
f6688943 TS |
1567 | static bfd_reloc_code_real_type imm_reloc[3] |
1568 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
1569 | static bfd_reloc_code_real_type offset_reloc[3] | |
1570 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1571 | |
df58fc94 RS |
1572 | /* This is set to the resulting size of the instruction to be produced |
1573 | by mips16_ip if an explicit extension is used or by mips_ip if an | |
1574 | explicit size is supplied. */ | |
252b5132 | 1575 | |
df58fc94 | 1576 | static unsigned int forced_insn_length; |
252b5132 | 1577 | |
7ed4a06a | 1578 | #ifdef OBJ_ELF |
ecb4347a DJ |
1579 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1580 | ECOFF debugging. */ | |
252b5132 RH |
1581 | |
1582 | static segT pdr_seg; | |
7ed4a06a | 1583 | #endif |
252b5132 | 1584 | |
e013f690 TS |
1585 | /* The default target format to use. */ |
1586 | ||
aeffff67 RS |
1587 | #if defined (TE_FreeBSD) |
1588 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips-freebsd" | |
1589 | #elif defined (TE_TMIPS) | |
1590 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips" | |
1591 | #else | |
1592 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX ENDIAN "mips" | |
1593 | #endif | |
1594 | ||
e013f690 | 1595 | const char * |
17a2f251 | 1596 | mips_target_format (void) |
e013f690 TS |
1597 | { |
1598 | switch (OUTPUT_FLAVOR) | |
1599 | { | |
e013f690 TS |
1600 | case bfd_target_ecoff_flavour: |
1601 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
1602 | case bfd_target_coff_flavour: | |
1603 | return "pe-mips"; | |
1604 | case bfd_target_elf_flavour: | |
0a44bf69 RS |
1605 | #ifdef TE_VXWORKS |
1606 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1607 | return (target_big_endian | |
1608 | ? "elf32-bigmips-vxworks" | |
1609 | : "elf32-littlemips-vxworks"); | |
1610 | #endif | |
e013f690 | 1611 | return (target_big_endian |
cfe86eaa | 1612 | ? (HAVE_64BIT_OBJECTS |
aeffff67 | 1613 | ? ELF_TARGET ("elf64-", "big") |
cfe86eaa | 1614 | : (HAVE_NEWABI |
aeffff67 RS |
1615 | ? ELF_TARGET ("elf32-n", "big") |
1616 | : ELF_TARGET ("elf32-", "big"))) | |
cfe86eaa | 1617 | : (HAVE_64BIT_OBJECTS |
aeffff67 | 1618 | ? ELF_TARGET ("elf64-", "little") |
cfe86eaa | 1619 | : (HAVE_NEWABI |
aeffff67 RS |
1620 | ? ELF_TARGET ("elf32-n", "little") |
1621 | : ELF_TARGET ("elf32-", "little")))); | |
e013f690 TS |
1622 | default: |
1623 | abort (); | |
1624 | return NULL; | |
1625 | } | |
1626 | } | |
1627 | ||
df58fc94 RS |
1628 | /* Return the length of a microMIPS instruction in bytes. If bits of |
1629 | the mask beyond the low 16 are 0, then it is a 16-bit instruction. | |
1630 | Otherwise assume a 32-bit instruction; 48-bit instructions (0x1f | |
1631 | major opcode) will require further modifications to the opcode | |
1632 | table. */ | |
1633 | ||
1634 | static inline unsigned int | |
1635 | micromips_insn_length (const struct mips_opcode *mo) | |
1636 | { | |
1637 | return (mo->mask >> 16) == 0 ? 2 : 4; | |
1638 | } | |
1639 | ||
1e915849 RS |
1640 | /* Return the length of instruction INSN. */ |
1641 | ||
1642 | static inline unsigned int | |
1643 | insn_length (const struct mips_cl_insn *insn) | |
1644 | { | |
df58fc94 RS |
1645 | if (mips_opts.micromips) |
1646 | return micromips_insn_length (insn->insn_mo); | |
1647 | else if (mips_opts.mips16) | |
1648 | return insn->mips16_absolute_jump_p || insn->use_extend ? 4 : 2; | |
1649 | else | |
1e915849 | 1650 | return 4; |
1e915849 RS |
1651 | } |
1652 | ||
1653 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
1654 | ||
1655 | static void | |
1656 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
1657 | { | |
1658 | size_t i; | |
1659 | ||
1660 | insn->insn_mo = mo; | |
1661 | insn->use_extend = FALSE; | |
1662 | insn->extend = 0; | |
1663 | insn->insn_opcode = mo->match; | |
1664 | insn->frag = NULL; | |
1665 | insn->where = 0; | |
1666 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1667 | insn->fixp[i] = NULL; | |
1668 | insn->fixed_p = (mips_opts.noreorder > 0); | |
1669 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
1670 | insn->mips16_absolute_jump_p = 0; | |
15be625d | 1671 | insn->complete_p = 0; |
1e915849 RS |
1672 | } |
1673 | ||
df58fc94 | 1674 | /* Record the current MIPS16/microMIPS mode in now_seg. */ |
742a56fe RS |
1675 | |
1676 | static void | |
df58fc94 | 1677 | mips_record_compressed_mode (void) |
742a56fe RS |
1678 | { |
1679 | segment_info_type *si; | |
1680 | ||
1681 | si = seg_info (now_seg); | |
1682 | if (si->tc_segment_info_data.mips16 != mips_opts.mips16) | |
1683 | si->tc_segment_info_data.mips16 = mips_opts.mips16; | |
df58fc94 RS |
1684 | if (si->tc_segment_info_data.micromips != mips_opts.micromips) |
1685 | si->tc_segment_info_data.micromips = mips_opts.micromips; | |
742a56fe RS |
1686 | } |
1687 | ||
1e915849 RS |
1688 | /* Install INSN at the location specified by its "frag" and "where" fields. */ |
1689 | ||
1690 | static void | |
1691 | install_insn (const struct mips_cl_insn *insn) | |
1692 | { | |
1693 | char *f = insn->frag->fr_literal + insn->where; | |
df58fc94 | 1694 | if (!HAVE_CODE_COMPRESSION) |
1e915849 | 1695 | md_number_to_chars (f, insn->insn_opcode, 4); |
df58fc94 RS |
1696 | else if (mips_opts.micromips) |
1697 | { | |
1698 | unsigned int length = insn_length (insn); | |
1699 | if (length == 2) | |
1700 | md_number_to_chars (f, insn->insn_opcode, 2); | |
1701 | else if (length == 4) | |
1702 | { | |
1703 | md_number_to_chars (f, insn->insn_opcode >> 16, 2); | |
1704 | f += 2; | |
1705 | md_number_to_chars (f, insn->insn_opcode & 0xffff, 2); | |
1706 | } | |
1707 | else | |
1708 | as_bad (_("48-bit microMIPS instructions are not supported")); | |
1709 | } | |
1e915849 RS |
1710 | else if (insn->mips16_absolute_jump_p) |
1711 | { | |
1712 | md_number_to_chars (f, insn->insn_opcode >> 16, 2); | |
1713 | md_number_to_chars (f + 2, insn->insn_opcode & 0xffff, 2); | |
1714 | } | |
1715 | else | |
1716 | { | |
1717 | if (insn->use_extend) | |
1718 | { | |
1719 | md_number_to_chars (f, 0xf000 | insn->extend, 2); | |
1720 | f += 2; | |
1721 | } | |
1722 | md_number_to_chars (f, insn->insn_opcode, 2); | |
1723 | } | |
df58fc94 | 1724 | mips_record_compressed_mode (); |
1e915849 RS |
1725 | } |
1726 | ||
1727 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
1728 | and install the opcode in the new location. */ | |
1729 | ||
1730 | static void | |
1731 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
1732 | { | |
1733 | size_t i; | |
1734 | ||
1735 | insn->frag = frag; | |
1736 | insn->where = where; | |
1737 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1738 | if (insn->fixp[i] != NULL) | |
1739 | { | |
1740 | insn->fixp[i]->fx_frag = frag; | |
1741 | insn->fixp[i]->fx_where = where; | |
1742 | } | |
1743 | install_insn (insn); | |
1744 | } | |
1745 | ||
1746 | /* Add INSN to the end of the output. */ | |
1747 | ||
1748 | static void | |
1749 | add_fixed_insn (struct mips_cl_insn *insn) | |
1750 | { | |
1751 | char *f = frag_more (insn_length (insn)); | |
1752 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
1753 | } | |
1754 | ||
1755 | /* Start a variant frag and move INSN to the start of the variant part, | |
1756 | marking it as fixed. The other arguments are as for frag_var. */ | |
1757 | ||
1758 | static void | |
1759 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
1760 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
1761 | { | |
1762 | frag_grow (max_chars); | |
1763 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
1764 | insn->fixed_p = 1; | |
1765 | frag_var (rs_machine_dependent, max_chars, var, | |
1766 | subtype, symbol, offset, NULL); | |
1767 | } | |
1768 | ||
1769 | /* Insert N copies of INSN into the history buffer, starting at | |
1770 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
1771 | ||
1772 | static void | |
1773 | insert_into_history (unsigned int first, unsigned int n, | |
1774 | const struct mips_cl_insn *insn) | |
1775 | { | |
1776 | if (mips_relax.sequence != 2) | |
1777 | { | |
1778 | unsigned int i; | |
1779 | ||
1780 | for (i = ARRAY_SIZE (history); i-- > first;) | |
1781 | if (i >= first + n) | |
1782 | history[i] = history[i - n]; | |
1783 | else | |
1784 | history[i] = *insn; | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | /* Emit a nop instruction, recording it in the history buffer. */ | |
1789 | ||
1790 | static void | |
1791 | emit_nop (void) | |
1792 | { | |
1793 | add_fixed_insn (NOP_INSN); | |
1794 | insert_into_history (0, 1, NOP_INSN); | |
1795 | } | |
1796 | ||
71400594 RS |
1797 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
1798 | the idea is to make it obvious at a glance that each errata is | |
1799 | included. */ | |
1800 | ||
1801 | static void | |
1802 | init_vr4120_conflicts (void) | |
1803 | { | |
1804 | #define CONFLICT(FIRST, SECOND) \ | |
1805 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
1806 | ||
1807 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
1808 | CONFLICT (MACC, DIV); | |
1809 | CONFLICT (DMACC, DIV); | |
1810 | ||
1811 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
1812 | CONFLICT (DMULT, DMULT); | |
1813 | CONFLICT (DMULT, DMACC); | |
1814 | CONFLICT (DMACC, DMULT); | |
1815 | CONFLICT (DMACC, DMACC); | |
1816 | ||
1817 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
1818 | CONFLICT (MACC, MTHILO); | |
1819 | CONFLICT (DMACC, MTHILO); | |
1820 | ||
1821 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
1822 | instruction is executed immediately after a MACC or DMACC | |
1823 | instruction, the result of [either instruction] is incorrect." */ | |
1824 | CONFLICT (MACC, MULT); | |
1825 | CONFLICT (MACC, DMULT); | |
1826 | CONFLICT (DMACC, MULT); | |
1827 | CONFLICT (DMACC, DMULT); | |
1828 | ||
1829 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
1830 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
1831 | DDIV or DDIVU instruction, the result of the MACC or | |
1832 | DMACC instruction is incorrect.". */ | |
1833 | CONFLICT (DMULT, MACC); | |
1834 | CONFLICT (DMULT, DMACC); | |
1835 | CONFLICT (DIV, MACC); | |
1836 | CONFLICT (DIV, DMACC); | |
1837 | ||
1838 | #undef CONFLICT | |
1839 | } | |
1840 | ||
707bfff6 TS |
1841 | struct regname { |
1842 | const char *name; | |
1843 | unsigned int num; | |
1844 | }; | |
1845 | ||
1846 | #define RTYPE_MASK 0x1ff00 | |
1847 | #define RTYPE_NUM 0x00100 | |
1848 | #define RTYPE_FPU 0x00200 | |
1849 | #define RTYPE_FCC 0x00400 | |
1850 | #define RTYPE_VEC 0x00800 | |
1851 | #define RTYPE_GP 0x01000 | |
1852 | #define RTYPE_CP0 0x02000 | |
1853 | #define RTYPE_PC 0x04000 | |
1854 | #define RTYPE_ACC 0x08000 | |
1855 | #define RTYPE_CCC 0x10000 | |
1856 | #define RNUM_MASK 0x000ff | |
1857 | #define RWARN 0x80000 | |
1858 | ||
1859 | #define GENERIC_REGISTER_NUMBERS \ | |
1860 | {"$0", RTYPE_NUM | 0}, \ | |
1861 | {"$1", RTYPE_NUM | 1}, \ | |
1862 | {"$2", RTYPE_NUM | 2}, \ | |
1863 | {"$3", RTYPE_NUM | 3}, \ | |
1864 | {"$4", RTYPE_NUM | 4}, \ | |
1865 | {"$5", RTYPE_NUM | 5}, \ | |
1866 | {"$6", RTYPE_NUM | 6}, \ | |
1867 | {"$7", RTYPE_NUM | 7}, \ | |
1868 | {"$8", RTYPE_NUM | 8}, \ | |
1869 | {"$9", RTYPE_NUM | 9}, \ | |
1870 | {"$10", RTYPE_NUM | 10}, \ | |
1871 | {"$11", RTYPE_NUM | 11}, \ | |
1872 | {"$12", RTYPE_NUM | 12}, \ | |
1873 | {"$13", RTYPE_NUM | 13}, \ | |
1874 | {"$14", RTYPE_NUM | 14}, \ | |
1875 | {"$15", RTYPE_NUM | 15}, \ | |
1876 | {"$16", RTYPE_NUM | 16}, \ | |
1877 | {"$17", RTYPE_NUM | 17}, \ | |
1878 | {"$18", RTYPE_NUM | 18}, \ | |
1879 | {"$19", RTYPE_NUM | 19}, \ | |
1880 | {"$20", RTYPE_NUM | 20}, \ | |
1881 | {"$21", RTYPE_NUM | 21}, \ | |
1882 | {"$22", RTYPE_NUM | 22}, \ | |
1883 | {"$23", RTYPE_NUM | 23}, \ | |
1884 | {"$24", RTYPE_NUM | 24}, \ | |
1885 | {"$25", RTYPE_NUM | 25}, \ | |
1886 | {"$26", RTYPE_NUM | 26}, \ | |
1887 | {"$27", RTYPE_NUM | 27}, \ | |
1888 | {"$28", RTYPE_NUM | 28}, \ | |
1889 | {"$29", RTYPE_NUM | 29}, \ | |
1890 | {"$30", RTYPE_NUM | 30}, \ | |
1891 | {"$31", RTYPE_NUM | 31} | |
1892 | ||
1893 | #define FPU_REGISTER_NAMES \ | |
1894 | {"$f0", RTYPE_FPU | 0}, \ | |
1895 | {"$f1", RTYPE_FPU | 1}, \ | |
1896 | {"$f2", RTYPE_FPU | 2}, \ | |
1897 | {"$f3", RTYPE_FPU | 3}, \ | |
1898 | {"$f4", RTYPE_FPU | 4}, \ | |
1899 | {"$f5", RTYPE_FPU | 5}, \ | |
1900 | {"$f6", RTYPE_FPU | 6}, \ | |
1901 | {"$f7", RTYPE_FPU | 7}, \ | |
1902 | {"$f8", RTYPE_FPU | 8}, \ | |
1903 | {"$f9", RTYPE_FPU | 9}, \ | |
1904 | {"$f10", RTYPE_FPU | 10}, \ | |
1905 | {"$f11", RTYPE_FPU | 11}, \ | |
1906 | {"$f12", RTYPE_FPU | 12}, \ | |
1907 | {"$f13", RTYPE_FPU | 13}, \ | |
1908 | {"$f14", RTYPE_FPU | 14}, \ | |
1909 | {"$f15", RTYPE_FPU | 15}, \ | |
1910 | {"$f16", RTYPE_FPU | 16}, \ | |
1911 | {"$f17", RTYPE_FPU | 17}, \ | |
1912 | {"$f18", RTYPE_FPU | 18}, \ | |
1913 | {"$f19", RTYPE_FPU | 19}, \ | |
1914 | {"$f20", RTYPE_FPU | 20}, \ | |
1915 | {"$f21", RTYPE_FPU | 21}, \ | |
1916 | {"$f22", RTYPE_FPU | 22}, \ | |
1917 | {"$f23", RTYPE_FPU | 23}, \ | |
1918 | {"$f24", RTYPE_FPU | 24}, \ | |
1919 | {"$f25", RTYPE_FPU | 25}, \ | |
1920 | {"$f26", RTYPE_FPU | 26}, \ | |
1921 | {"$f27", RTYPE_FPU | 27}, \ | |
1922 | {"$f28", RTYPE_FPU | 28}, \ | |
1923 | {"$f29", RTYPE_FPU | 29}, \ | |
1924 | {"$f30", RTYPE_FPU | 30}, \ | |
1925 | {"$f31", RTYPE_FPU | 31} | |
1926 | ||
1927 | #define FPU_CONDITION_CODE_NAMES \ | |
1928 | {"$fcc0", RTYPE_FCC | 0}, \ | |
1929 | {"$fcc1", RTYPE_FCC | 1}, \ | |
1930 | {"$fcc2", RTYPE_FCC | 2}, \ | |
1931 | {"$fcc3", RTYPE_FCC | 3}, \ | |
1932 | {"$fcc4", RTYPE_FCC | 4}, \ | |
1933 | {"$fcc5", RTYPE_FCC | 5}, \ | |
1934 | {"$fcc6", RTYPE_FCC | 6}, \ | |
1935 | {"$fcc7", RTYPE_FCC | 7} | |
1936 | ||
1937 | #define COPROC_CONDITION_CODE_NAMES \ | |
1938 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
1939 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
1940 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
1941 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
1942 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
1943 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
1944 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
1945 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
1946 | ||
1947 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
1948 | {"$a4", RTYPE_GP | 8}, \ | |
1949 | {"$a5", RTYPE_GP | 9}, \ | |
1950 | {"$a6", RTYPE_GP | 10}, \ | |
1951 | {"$a7", RTYPE_GP | 11}, \ | |
1952 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
1953 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
1954 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
1955 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
1956 | {"$t0", RTYPE_GP | 12}, \ | |
1957 | {"$t1", RTYPE_GP | 13}, \ | |
1958 | {"$t2", RTYPE_GP | 14}, \ | |
1959 | {"$t3", RTYPE_GP | 15} | |
1960 | ||
1961 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
1962 | {"$t0", RTYPE_GP | 8}, \ | |
1963 | {"$t1", RTYPE_GP | 9}, \ | |
1964 | {"$t2", RTYPE_GP | 10}, \ | |
1965 | {"$t3", RTYPE_GP | 11}, \ | |
1966 | {"$t4", RTYPE_GP | 12}, \ | |
1967 | {"$t5", RTYPE_GP | 13}, \ | |
1968 | {"$t6", RTYPE_GP | 14}, \ | |
1969 | {"$t7", RTYPE_GP | 15}, \ | |
1970 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
1971 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
1972 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
1973 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ | |
1974 | ||
1975 | /* Remaining symbolic register names */ | |
1976 | #define SYMBOLIC_REGISTER_NAMES \ | |
1977 | {"$zero", RTYPE_GP | 0}, \ | |
1978 | {"$at", RTYPE_GP | 1}, \ | |
1979 | {"$AT", RTYPE_GP | 1}, \ | |
1980 | {"$v0", RTYPE_GP | 2}, \ | |
1981 | {"$v1", RTYPE_GP | 3}, \ | |
1982 | {"$a0", RTYPE_GP | 4}, \ | |
1983 | {"$a1", RTYPE_GP | 5}, \ | |
1984 | {"$a2", RTYPE_GP | 6}, \ | |
1985 | {"$a3", RTYPE_GP | 7}, \ | |
1986 | {"$s0", RTYPE_GP | 16}, \ | |
1987 | {"$s1", RTYPE_GP | 17}, \ | |
1988 | {"$s2", RTYPE_GP | 18}, \ | |
1989 | {"$s3", RTYPE_GP | 19}, \ | |
1990 | {"$s4", RTYPE_GP | 20}, \ | |
1991 | {"$s5", RTYPE_GP | 21}, \ | |
1992 | {"$s6", RTYPE_GP | 22}, \ | |
1993 | {"$s7", RTYPE_GP | 23}, \ | |
1994 | {"$t8", RTYPE_GP | 24}, \ | |
1995 | {"$t9", RTYPE_GP | 25}, \ | |
1996 | {"$k0", RTYPE_GP | 26}, \ | |
1997 | {"$kt0", RTYPE_GP | 26}, \ | |
1998 | {"$k1", RTYPE_GP | 27}, \ | |
1999 | {"$kt1", RTYPE_GP | 27}, \ | |
2000 | {"$gp", RTYPE_GP | 28}, \ | |
2001 | {"$sp", RTYPE_GP | 29}, \ | |
2002 | {"$s8", RTYPE_GP | 30}, \ | |
2003 | {"$fp", RTYPE_GP | 30}, \ | |
2004 | {"$ra", RTYPE_GP | 31} | |
2005 | ||
2006 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
2007 | {"$pc", RTYPE_PC | 0} | |
2008 | ||
2009 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
2010 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
2011 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
2012 | {"$v2", RTYPE_VEC | 2}, \ | |
2013 | {"$v3", RTYPE_VEC | 3}, \ | |
2014 | {"$v4", RTYPE_VEC | 4}, \ | |
2015 | {"$v5", RTYPE_VEC | 5}, \ | |
2016 | {"$v6", RTYPE_VEC | 6}, \ | |
2017 | {"$v7", RTYPE_VEC | 7}, \ | |
2018 | {"$v8", RTYPE_VEC | 8}, \ | |
2019 | {"$v9", RTYPE_VEC | 9}, \ | |
2020 | {"$v10", RTYPE_VEC | 10}, \ | |
2021 | {"$v11", RTYPE_VEC | 11}, \ | |
2022 | {"$v12", RTYPE_VEC | 12}, \ | |
2023 | {"$v13", RTYPE_VEC | 13}, \ | |
2024 | {"$v14", RTYPE_VEC | 14}, \ | |
2025 | {"$v15", RTYPE_VEC | 15}, \ | |
2026 | {"$v16", RTYPE_VEC | 16}, \ | |
2027 | {"$v17", RTYPE_VEC | 17}, \ | |
2028 | {"$v18", RTYPE_VEC | 18}, \ | |
2029 | {"$v19", RTYPE_VEC | 19}, \ | |
2030 | {"$v20", RTYPE_VEC | 20}, \ | |
2031 | {"$v21", RTYPE_VEC | 21}, \ | |
2032 | {"$v22", RTYPE_VEC | 22}, \ | |
2033 | {"$v23", RTYPE_VEC | 23}, \ | |
2034 | {"$v24", RTYPE_VEC | 24}, \ | |
2035 | {"$v25", RTYPE_VEC | 25}, \ | |
2036 | {"$v26", RTYPE_VEC | 26}, \ | |
2037 | {"$v27", RTYPE_VEC | 27}, \ | |
2038 | {"$v28", RTYPE_VEC | 28}, \ | |
2039 | {"$v29", RTYPE_VEC | 29}, \ | |
2040 | {"$v30", RTYPE_VEC | 30}, \ | |
2041 | {"$v31", RTYPE_VEC | 31} | |
2042 | ||
2043 | #define MIPS_DSP_ACCUMULATOR_NAMES \ | |
2044 | {"$ac0", RTYPE_ACC | 0}, \ | |
2045 | {"$ac1", RTYPE_ACC | 1}, \ | |
2046 | {"$ac2", RTYPE_ACC | 2}, \ | |
2047 | {"$ac3", RTYPE_ACC | 3} | |
2048 | ||
2049 | static const struct regname reg_names[] = { | |
2050 | GENERIC_REGISTER_NUMBERS, | |
2051 | FPU_REGISTER_NAMES, | |
2052 | FPU_CONDITION_CODE_NAMES, | |
2053 | COPROC_CONDITION_CODE_NAMES, | |
2054 | ||
2055 | /* The $txx registers depends on the abi, | |
2056 | these will be added later into the symbol table from | |
2057 | one of the tables below once mips_abi is set after | |
2058 | parsing of arguments from the command line. */ | |
2059 | SYMBOLIC_REGISTER_NAMES, | |
2060 | ||
2061 | MIPS16_SPECIAL_REGISTER_NAMES, | |
2062 | MDMX_VECTOR_REGISTER_NAMES, | |
2063 | MIPS_DSP_ACCUMULATOR_NAMES, | |
2064 | {0, 0} | |
2065 | }; | |
2066 | ||
2067 | static const struct regname reg_names_o32[] = { | |
2068 | O32_SYMBOLIC_REGISTER_NAMES, | |
2069 | {0, 0} | |
2070 | }; | |
2071 | ||
2072 | static const struct regname reg_names_n32n64[] = { | |
2073 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
2074 | {0, 0} | |
2075 | }; | |
2076 | ||
df58fc94 RS |
2077 | /* Check if S points at a valid register specifier according to TYPES. |
2078 | If so, then return 1, advance S to consume the specifier and store | |
2079 | the register's number in REGNOP, otherwise return 0. */ | |
2080 | ||
707bfff6 TS |
2081 | static int |
2082 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
2083 | { | |
2084 | symbolS *symbolP; | |
2085 | char *e; | |
2086 | char save_c; | |
2087 | int reg = -1; | |
2088 | ||
2089 | /* Find end of name. */ | |
2090 | e = *s; | |
2091 | if (is_name_beginner (*e)) | |
2092 | ++e; | |
2093 | while (is_part_of_name (*e)) | |
2094 | ++e; | |
2095 | ||
2096 | /* Terminate name. */ | |
2097 | save_c = *e; | |
2098 | *e = '\0'; | |
2099 | ||
2100 | /* Look for a register symbol. */ | |
2101 | if ((symbolP = symbol_find (*s)) && S_GET_SEGMENT (symbolP) == reg_section) | |
2102 | { | |
2103 | int r = S_GET_VALUE (symbolP); | |
2104 | if (r & types) | |
2105 | reg = r & RNUM_MASK; | |
2106 | else if ((types & RTYPE_VEC) && (r & ~1) == (RTYPE_GP | 2)) | |
2107 | /* Convert GP reg $v0/1 to MDMX reg $v0/1! */ | |
2108 | reg = (r & RNUM_MASK) - 2; | |
2109 | } | |
2110 | /* Else see if this is a register defined in an itbl entry. */ | |
2111 | else if ((types & RTYPE_GP) && itbl_have_entries) | |
2112 | { | |
2113 | char *n = *s; | |
2114 | unsigned long r; | |
2115 | ||
2116 | if (*n == '$') | |
2117 | ++n; | |
2118 | if (itbl_get_reg_val (n, &r)) | |
2119 | reg = r & RNUM_MASK; | |
2120 | } | |
2121 | ||
2122 | /* Advance to next token if a register was recognised. */ | |
2123 | if (reg >= 0) | |
2124 | *s = e; | |
2125 | else if (types & RWARN) | |
20203fb9 | 2126 | as_warn (_("Unrecognized register name `%s'"), *s); |
707bfff6 TS |
2127 | |
2128 | *e = save_c; | |
2129 | if (regnop) | |
2130 | *regnop = reg; | |
2131 | return reg >= 0; | |
2132 | } | |
2133 | ||
df58fc94 RS |
2134 | /* Check if S points at a valid register list according to TYPES. |
2135 | If so, then return 1, advance S to consume the list and store | |
2136 | the registers present on the list as a bitmask of ones in REGLISTP, | |
2137 | otherwise return 0. A valid list comprises a comma-separated | |
2138 | enumeration of valid single registers and/or dash-separated | |
2139 | contiguous register ranges as determined by their numbers. | |
2140 | ||
2141 | As a special exception if one of s0-s7 registers is specified as | |
2142 | the range's lower delimiter and s8 (fp) is its upper one, then no | |
2143 | registers whose numbers place them between s7 and s8 (i.e. $24-$29) | |
2309ddf2 | 2144 | are selected; they have to be listed separately if needed. */ |
df58fc94 RS |
2145 | |
2146 | static int | |
2147 | reglist_lookup (char **s, unsigned int types, unsigned int *reglistp) | |
2148 | { | |
2149 | unsigned int reglist = 0; | |
2150 | unsigned int lastregno; | |
2151 | bfd_boolean ok = TRUE; | |
2152 | unsigned int regmask; | |
2309ddf2 | 2153 | char *s_endlist = *s; |
df58fc94 | 2154 | char *s_reset = *s; |
2309ddf2 | 2155 | unsigned int regno; |
df58fc94 RS |
2156 | |
2157 | while (reg_lookup (s, types, ®no)) | |
2158 | { | |
2159 | lastregno = regno; | |
2160 | if (**s == '-') | |
2161 | { | |
2162 | (*s)++; | |
2163 | ok = reg_lookup (s, types, &lastregno); | |
2164 | if (ok && lastregno < regno) | |
2165 | ok = FALSE; | |
2166 | if (!ok) | |
2167 | break; | |
2168 | } | |
2169 | ||
2170 | if (lastregno == FP && regno >= S0 && regno <= S7) | |
2171 | { | |
2172 | lastregno = S7; | |
2173 | reglist |= 1 << FP; | |
2174 | } | |
2175 | regmask = 1 << lastregno; | |
2176 | regmask = (regmask << 1) - 1; | |
2177 | regmask ^= (1 << regno) - 1; | |
2178 | reglist |= regmask; | |
2179 | ||
2309ddf2 | 2180 | s_endlist = *s; |
df58fc94 RS |
2181 | if (**s != ',') |
2182 | break; | |
2183 | (*s)++; | |
2184 | } | |
2185 | ||
2186 | if (ok) | |
2309ddf2 | 2187 | *s = s_endlist; |
df58fc94 RS |
2188 | else |
2189 | *s = s_reset; | |
2190 | if (reglistp) | |
2191 | *reglistp = reglist; | |
2192 | return ok && reglist != 0; | |
2193 | } | |
2194 | ||
037b32b9 | 2195 | /* Return TRUE if opcode MO is valid on the currently selected ISA and |
f79e2745 | 2196 | architecture. Use is_opcode_valid_16 for MIPS16 opcodes. */ |
037b32b9 AN |
2197 | |
2198 | static bfd_boolean | |
f79e2745 | 2199 | is_opcode_valid (const struct mips_opcode *mo) |
037b32b9 AN |
2200 | { |
2201 | int isa = mips_opts.isa; | |
2202 | int fp_s, fp_d; | |
2203 | ||
2204 | if (mips_opts.ase_mdmx) | |
2205 | isa |= INSN_MDMX; | |
2206 | if (mips_opts.ase_dsp) | |
2207 | isa |= INSN_DSP; | |
2208 | if (mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE) | |
2209 | isa |= INSN_DSP64; | |
2210 | if (mips_opts.ase_dspr2) | |
2211 | isa |= INSN_DSPR2; | |
2212 | if (mips_opts.ase_mt) | |
2213 | isa |= INSN_MT; | |
2214 | if (mips_opts.ase_mips3d) | |
2215 | isa |= INSN_MIPS3D; | |
2216 | if (mips_opts.ase_smartmips) | |
2217 | isa |= INSN_SMARTMIPS; | |
2218 | ||
b19e8a9b AN |
2219 | /* Don't accept instructions based on the ISA if the CPU does not implement |
2220 | all the coprocessor insns. */ | |
2221 | if (NO_ISA_COP (mips_opts.arch) | |
2222 | && COP_INSN (mo->pinfo)) | |
2223 | isa = 0; | |
2224 | ||
037b32b9 AN |
2225 | if (!OPCODE_IS_MEMBER (mo, isa, mips_opts.arch)) |
2226 | return FALSE; | |
2227 | ||
2228 | /* Check whether the instruction or macro requires single-precision or | |
2229 | double-precision floating-point support. Note that this information is | |
2230 | stored differently in the opcode table for insns and macros. */ | |
2231 | if (mo->pinfo == INSN_MACRO) | |
2232 | { | |
2233 | fp_s = mo->pinfo2 & INSN2_M_FP_S; | |
2234 | fp_d = mo->pinfo2 & INSN2_M_FP_D; | |
2235 | } | |
2236 | else | |
2237 | { | |
2238 | fp_s = mo->pinfo & FP_S; | |
2239 | fp_d = mo->pinfo & FP_D; | |
2240 | } | |
2241 | ||
2242 | if (fp_d && (mips_opts.soft_float || mips_opts.single_float)) | |
2243 | return FALSE; | |
2244 | ||
2245 | if (fp_s && mips_opts.soft_float) | |
2246 | return FALSE; | |
2247 | ||
2248 | return TRUE; | |
2249 | } | |
2250 | ||
2251 | /* Return TRUE if the MIPS16 opcode MO is valid on the currently | |
2252 | selected ISA and architecture. */ | |
2253 | ||
2254 | static bfd_boolean | |
2255 | is_opcode_valid_16 (const struct mips_opcode *mo) | |
2256 | { | |
2257 | return OPCODE_IS_MEMBER (mo, mips_opts.isa, mips_opts.arch) ? TRUE : FALSE; | |
2258 | } | |
2259 | ||
df58fc94 RS |
2260 | /* Return TRUE if the size of the microMIPS opcode MO matches one |
2261 | explicitly requested. Always TRUE in the standard MIPS mode. */ | |
2262 | ||
2263 | static bfd_boolean | |
2264 | is_size_valid (const struct mips_opcode *mo) | |
2265 | { | |
2266 | if (!mips_opts.micromips) | |
2267 | return TRUE; | |
2268 | ||
2269 | if (!forced_insn_length) | |
2270 | return TRUE; | |
2271 | if (mo->pinfo == INSN_MACRO) | |
2272 | return FALSE; | |
2273 | return forced_insn_length == micromips_insn_length (mo); | |
2274 | } | |
2275 | ||
2276 | /* Return TRUE if the microMIPS opcode MO is valid for the delay slot | |
2277 | of the preceding instruction. Always TRUE in the standard MIPS mode. */ | |
2278 | ||
2279 | static bfd_boolean | |
2280 | is_delay_slot_valid (const struct mips_opcode *mo) | |
2281 | { | |
2282 | if (!mips_opts.micromips) | |
2283 | return TRUE; | |
2284 | ||
2285 | if (mo->pinfo == INSN_MACRO) | |
2286 | return TRUE; | |
2287 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 | |
2288 | && micromips_insn_length (mo) != 4) | |
2289 | return FALSE; | |
2290 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
2291 | && micromips_insn_length (mo) != 2) | |
2292 | return FALSE; | |
2293 | ||
2294 | return TRUE; | |
2295 | } | |
2296 | ||
707bfff6 TS |
2297 | /* This function is called once, at assembler startup time. It should set up |
2298 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 2299 | |
252b5132 | 2300 | void |
17a2f251 | 2301 | md_begin (void) |
252b5132 | 2302 | { |
3994f87e | 2303 | const char *retval = NULL; |
156c2f8b | 2304 | int i = 0; |
252b5132 | 2305 | int broken = 0; |
1f25f5d3 | 2306 | |
0a44bf69 RS |
2307 | if (mips_pic != NO_PIC) |
2308 | { | |
2309 | if (g_switch_seen && g_switch_value != 0) | |
2310 | as_bad (_("-G may not be used in position-independent code")); | |
2311 | g_switch_value = 0; | |
2312 | } | |
2313 | ||
fef14a42 | 2314 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch)) |
252b5132 RH |
2315 | as_warn (_("Could not set architecture and machine")); |
2316 | ||
252b5132 RH |
2317 | op_hash = hash_new (); |
2318 | ||
2319 | for (i = 0; i < NUMOPCODES;) | |
2320 | { | |
2321 | const char *name = mips_opcodes[i].name; | |
2322 | ||
17a2f251 | 2323 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
2324 | if (retval != NULL) |
2325 | { | |
2326 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
2327 | mips_opcodes[i].name, retval); | |
2328 | /* Probably a memory allocation problem? Give up now. */ | |
2329 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
2330 | } | |
2331 | do | |
2332 | { | |
2333 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
2334 | { | |
2335 | if (!validate_mips_insn (&mips_opcodes[i])) | |
2336 | broken = 1; | |
1e915849 RS |
2337 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
2338 | { | |
2339 | create_insn (&nop_insn, mips_opcodes + i); | |
c67a084a NC |
2340 | if (mips_fix_loongson2f_nop) |
2341 | nop_insn.insn_opcode = LOONGSON2F_NOP_INSN; | |
1e915849 RS |
2342 | nop_insn.fixed_p = 1; |
2343 | } | |
252b5132 RH |
2344 | } |
2345 | ++i; | |
2346 | } | |
2347 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
2348 | } | |
2349 | ||
2350 | mips16_op_hash = hash_new (); | |
2351 | ||
2352 | i = 0; | |
2353 | while (i < bfd_mips16_num_opcodes) | |
2354 | { | |
2355 | const char *name = mips16_opcodes[i].name; | |
2356 | ||
17a2f251 | 2357 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
2358 | if (retval != NULL) |
2359 | as_fatal (_("internal: can't hash `%s': %s"), | |
2360 | mips16_opcodes[i].name, retval); | |
2361 | do | |
2362 | { | |
2363 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
2364 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
2365 | != mips16_opcodes[i].match)) | |
2366 | { | |
2367 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
2368 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
2369 | broken = 1; | |
2370 | } | |
1e915849 RS |
2371 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
2372 | { | |
2373 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
2374 | mips16_nop_insn.fixed_p = 1; | |
2375 | } | |
252b5132 RH |
2376 | ++i; |
2377 | } | |
2378 | while (i < bfd_mips16_num_opcodes | |
2379 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
2380 | } | |
2381 | ||
df58fc94 RS |
2382 | micromips_op_hash = hash_new (); |
2383 | ||
2384 | i = 0; | |
2385 | while (i < bfd_micromips_num_opcodes) | |
2386 | { | |
2387 | const char *name = micromips_opcodes[i].name; | |
2388 | ||
2389 | retval = hash_insert (micromips_op_hash, name, | |
2390 | (void *) µmips_opcodes[i]); | |
2391 | if (retval != NULL) | |
2392 | as_fatal (_("internal: can't hash `%s': %s"), | |
2393 | micromips_opcodes[i].name, retval); | |
2394 | do | |
2395 | if (micromips_opcodes[i].pinfo != INSN_MACRO) | |
2396 | { | |
2397 | struct mips_cl_insn *micromips_nop_insn; | |
2398 | ||
2399 | if (!validate_micromips_insn (µmips_opcodes[i])) | |
2400 | broken = 1; | |
2401 | ||
2402 | if (micromips_insn_length (micromips_opcodes + i) == 2) | |
2403 | micromips_nop_insn = µmips_nop16_insn; | |
2404 | else if (micromips_insn_length (micromips_opcodes + i) == 4) | |
2405 | micromips_nop_insn = µmips_nop32_insn; | |
2406 | else | |
2407 | continue; | |
2408 | ||
2409 | if (micromips_nop_insn->insn_mo == NULL | |
2410 | && strcmp (name, "nop") == 0) | |
2411 | { | |
2412 | create_insn (micromips_nop_insn, micromips_opcodes + i); | |
2413 | micromips_nop_insn->fixed_p = 1; | |
2414 | } | |
2415 | } | |
2416 | while (++i < bfd_micromips_num_opcodes | |
2417 | && strcmp (micromips_opcodes[i].name, name) == 0); | |
2418 | } | |
2419 | ||
252b5132 RH |
2420 | if (broken) |
2421 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
2422 | ||
2423 | /* We add all the general register names to the symbol table. This | |
2424 | helps us detect invalid uses of them. */ | |
707bfff6 TS |
2425 | for (i = 0; reg_names[i].name; i++) |
2426 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, | |
8fc4ee9b | 2427 | reg_names[i].num, /* & RNUM_MASK, */ |
707bfff6 TS |
2428 | &zero_address_frag)); |
2429 | if (HAVE_NEWABI) | |
2430 | for (i = 0; reg_names_n32n64[i].name; i++) | |
2431 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, | |
8fc4ee9b | 2432 | reg_names_n32n64[i].num, /* & RNUM_MASK, */ |
252b5132 | 2433 | &zero_address_frag)); |
707bfff6 TS |
2434 | else |
2435 | for (i = 0; reg_names_o32[i].name; i++) | |
2436 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, | |
8fc4ee9b | 2437 | reg_names_o32[i].num, /* & RNUM_MASK, */ |
6047c971 | 2438 | &zero_address_frag)); |
6047c971 | 2439 | |
7d10b47d | 2440 | mips_no_prev_insn (); |
252b5132 RH |
2441 | |
2442 | mips_gprmask = 0; | |
2443 | mips_cprmask[0] = 0; | |
2444 | mips_cprmask[1] = 0; | |
2445 | mips_cprmask[2] = 0; | |
2446 | mips_cprmask[3] = 0; | |
2447 | ||
2448 | /* set the default alignment for the text section (2**2) */ | |
2449 | record_alignment (text_section, 2); | |
2450 | ||
4d0d148d | 2451 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 2452 | |
707bfff6 | 2453 | #ifdef OBJ_ELF |
f43abd2b | 2454 | if (IS_ELF) |
252b5132 | 2455 | { |
0a44bf69 RS |
2456 | /* On a native system other than VxWorks, sections must be aligned |
2457 | to 16 byte boundaries. When configured for an embedded ELF | |
2458 | target, we don't bother. */ | |
c41e87e3 CF |
2459 | if (strncmp (TARGET_OS, "elf", 3) != 0 |
2460 | && strncmp (TARGET_OS, "vxworks", 7) != 0) | |
252b5132 RH |
2461 | { |
2462 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
2463 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
2464 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
2465 | } | |
2466 | ||
2467 | /* Create a .reginfo section for register masks and a .mdebug | |
2468 | section for debugging information. */ | |
2469 | { | |
2470 | segT seg; | |
2471 | subsegT subseg; | |
2472 | flagword flags; | |
2473 | segT sec; | |
2474 | ||
2475 | seg = now_seg; | |
2476 | subseg = now_subseg; | |
2477 | ||
2478 | /* The ABI says this section should be loaded so that the | |
2479 | running program can access it. However, we don't load it | |
2480 | if we are configured for an embedded target */ | |
2481 | flags = SEC_READONLY | SEC_DATA; | |
c41e87e3 | 2482 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
2483 | flags |= SEC_ALLOC | SEC_LOAD; |
2484 | ||
316f5878 | 2485 | if (mips_abi != N64_ABI) |
252b5132 RH |
2486 | { |
2487 | sec = subseg_new (".reginfo", (subsegT) 0); | |
2488 | ||
195325d2 TS |
2489 | bfd_set_section_flags (stdoutput, sec, flags); |
2490 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 2491 | |
252b5132 | 2492 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
252b5132 RH |
2493 | } |
2494 | else | |
2495 | { | |
2496 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
2497 | .reginfo section. */ | |
2498 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
2499 | bfd_set_section_flags (stdoutput, sec, flags); |
2500 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 2501 | |
252b5132 RH |
2502 | /* Set up the option header. */ |
2503 | { | |
2504 | Elf_Internal_Options opthdr; | |
2505 | char *f; | |
2506 | ||
2507 | opthdr.kind = ODK_REGINFO; | |
2508 | opthdr.size = (sizeof (Elf_External_Options) | |
2509 | + sizeof (Elf64_External_RegInfo)); | |
2510 | opthdr.section = 0; | |
2511 | opthdr.info = 0; | |
2512 | f = frag_more (sizeof (Elf_External_Options)); | |
2513 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
2514 | (Elf_External_Options *) f); | |
2515 | ||
2516 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
2517 | } | |
252b5132 RH |
2518 | } |
2519 | ||
2520 | if (ECOFF_DEBUGGING) | |
2521 | { | |
2522 | sec = subseg_new (".mdebug", (subsegT) 0); | |
2523 | (void) bfd_set_section_flags (stdoutput, sec, | |
2524 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2525 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
2526 | } | |
f43abd2b | 2527 | else if (mips_flag_pdr) |
ecb4347a DJ |
2528 | { |
2529 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
2530 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
2531 | SEC_READONLY | SEC_RELOC | |
2532 | | SEC_DEBUGGING); | |
2533 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
2534 | } | |
252b5132 RH |
2535 | |
2536 | subseg_set (seg, subseg); | |
2537 | } | |
2538 | } | |
707bfff6 | 2539 | #endif /* OBJ_ELF */ |
252b5132 RH |
2540 | |
2541 | if (! ECOFF_DEBUGGING) | |
2542 | md_obj_begin (); | |
71400594 RS |
2543 | |
2544 | if (mips_fix_vr4120) | |
2545 | init_vr4120_conflicts (); | |
252b5132 RH |
2546 | } |
2547 | ||
2548 | void | |
17a2f251 | 2549 | md_mips_end (void) |
252b5132 | 2550 | { |
02b1ab82 | 2551 | mips_emit_delays (); |
252b5132 RH |
2552 | if (! ECOFF_DEBUGGING) |
2553 | md_obj_end (); | |
2554 | } | |
2555 | ||
2556 | void | |
17a2f251 | 2557 | md_assemble (char *str) |
252b5132 RH |
2558 | { |
2559 | struct mips_cl_insn insn; | |
f6688943 TS |
2560 | bfd_reloc_code_real_type unused_reloc[3] |
2561 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
2562 | |
2563 | imm_expr.X_op = O_absent; | |
5f74bc13 | 2564 | imm2_expr.X_op = O_absent; |
252b5132 | 2565 | offset_expr.X_op = O_absent; |
f6688943 TS |
2566 | imm_reloc[0] = BFD_RELOC_UNUSED; |
2567 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
2568 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
2569 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
2570 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
2571 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2572 | |
2573 | if (mips_opts.mips16) | |
2574 | mips16_ip (str, &insn); | |
2575 | else | |
2576 | { | |
2577 | mips_ip (str, &insn); | |
beae10d5 KH |
2578 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
2579 | str, insn.insn_opcode)); | |
252b5132 RH |
2580 | } |
2581 | ||
2582 | if (insn_error) | |
2583 | { | |
2584 | as_bad ("%s `%s'", insn_error, str); | |
2585 | return; | |
2586 | } | |
2587 | ||
2588 | if (insn.insn_mo->pinfo == INSN_MACRO) | |
2589 | { | |
584892a6 | 2590 | macro_start (); |
252b5132 RH |
2591 | if (mips_opts.mips16) |
2592 | mips16_macro (&insn); | |
2593 | else | |
2594 | macro (&insn); | |
584892a6 | 2595 | macro_end (); |
252b5132 RH |
2596 | } |
2597 | else | |
2598 | { | |
2599 | if (imm_expr.X_op != O_absent) | |
df58fc94 | 2600 | append_insn (&insn, &imm_expr, imm_reloc, FALSE); |
252b5132 | 2601 | else if (offset_expr.X_op != O_absent) |
df58fc94 | 2602 | append_insn (&insn, &offset_expr, offset_reloc, FALSE); |
252b5132 | 2603 | else |
df58fc94 | 2604 | append_insn (&insn, NULL, unused_reloc, FALSE); |
252b5132 RH |
2605 | } |
2606 | } | |
2607 | ||
738e5348 RS |
2608 | /* Convenience functions for abstracting away the differences between |
2609 | MIPS16 and non-MIPS16 relocations. */ | |
2610 | ||
2611 | static inline bfd_boolean | |
2612 | mips16_reloc_p (bfd_reloc_code_real_type reloc) | |
2613 | { | |
2614 | switch (reloc) | |
2615 | { | |
2616 | case BFD_RELOC_MIPS16_JMP: | |
2617 | case BFD_RELOC_MIPS16_GPREL: | |
2618 | case BFD_RELOC_MIPS16_GOT16: | |
2619 | case BFD_RELOC_MIPS16_CALL16: | |
2620 | case BFD_RELOC_MIPS16_HI16_S: | |
2621 | case BFD_RELOC_MIPS16_HI16: | |
2622 | case BFD_RELOC_MIPS16_LO16: | |
2623 | return TRUE; | |
2624 | ||
2625 | default: | |
2626 | return FALSE; | |
2627 | } | |
2628 | } | |
2629 | ||
df58fc94 RS |
2630 | static inline bfd_boolean |
2631 | micromips_reloc_p (bfd_reloc_code_real_type reloc) | |
2632 | { | |
2633 | switch (reloc) | |
2634 | { | |
2635 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
2636 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
2637 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
2638 | case BFD_RELOC_MICROMIPS_GPREL16: | |
2639 | case BFD_RELOC_MICROMIPS_JMP: | |
2640 | case BFD_RELOC_MICROMIPS_HI16: | |
2641 | case BFD_RELOC_MICROMIPS_HI16_S: | |
2642 | case BFD_RELOC_MICROMIPS_LO16: | |
2643 | case BFD_RELOC_MICROMIPS_LITERAL: | |
2644 | case BFD_RELOC_MICROMIPS_GOT16: | |
2645 | case BFD_RELOC_MICROMIPS_CALL16: | |
2646 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
2647 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
2648 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
2649 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
2650 | case BFD_RELOC_MICROMIPS_SUB: | |
2651 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
2652 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
2653 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
2654 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
2655 | case BFD_RELOC_MICROMIPS_HIGHER: | |
2656 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
2657 | case BFD_RELOC_MICROMIPS_JALR: | |
2658 | return TRUE; | |
2659 | ||
2660 | default: | |
2661 | return FALSE; | |
2662 | } | |
2663 | } | |
2664 | ||
2309ddf2 MR |
2665 | static inline bfd_boolean |
2666 | jmp_reloc_p (bfd_reloc_code_real_type reloc) | |
2667 | { | |
2668 | return reloc == BFD_RELOC_MIPS_JMP || reloc == BFD_RELOC_MICROMIPS_JMP; | |
2669 | } | |
2670 | ||
738e5348 RS |
2671 | static inline bfd_boolean |
2672 | got16_reloc_p (bfd_reloc_code_real_type reloc) | |
2673 | { | |
2309ddf2 | 2674 | return (reloc == BFD_RELOC_MIPS_GOT16 || reloc == BFD_RELOC_MIPS16_GOT16 |
df58fc94 | 2675 | || reloc == BFD_RELOC_MICROMIPS_GOT16); |
738e5348 RS |
2676 | } |
2677 | ||
2678 | static inline bfd_boolean | |
2679 | hi16_reloc_p (bfd_reloc_code_real_type reloc) | |
2680 | { | |
2309ddf2 | 2681 | return (reloc == BFD_RELOC_HI16_S || reloc == BFD_RELOC_MIPS16_HI16_S |
df58fc94 | 2682 | || reloc == BFD_RELOC_MICROMIPS_HI16_S); |
738e5348 RS |
2683 | } |
2684 | ||
2685 | static inline bfd_boolean | |
2686 | lo16_reloc_p (bfd_reloc_code_real_type reloc) | |
2687 | { | |
2309ddf2 | 2688 | return (reloc == BFD_RELOC_LO16 || reloc == BFD_RELOC_MIPS16_LO16 |
df58fc94 RS |
2689 | || reloc == BFD_RELOC_MICROMIPS_LO16); |
2690 | } | |
2691 | ||
df58fc94 RS |
2692 | static inline bfd_boolean |
2693 | jalr_reloc_p (bfd_reloc_code_real_type reloc) | |
2694 | { | |
2309ddf2 | 2695 | return reloc == BFD_RELOC_MIPS_JALR || reloc == BFD_RELOC_MICROMIPS_JALR; |
738e5348 RS |
2696 | } |
2697 | ||
5919d012 | 2698 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
2699 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
2700 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
2701 | |
2702 | static inline bfd_boolean | |
17a2f251 | 2703 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 2704 | { |
3b91255e | 2705 | return (HAVE_IN_PLACE_ADDENDS |
738e5348 | 2706 | && (hi16_reloc_p (reloc) |
0a44bf69 RS |
2707 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); |
2708 | all GOT16 relocations evaluate to "G". */ | |
738e5348 RS |
2709 | || (got16_reloc_p (reloc) && mips_pic != VXWORKS_PIC))); |
2710 | } | |
2711 | ||
2712 | /* Return the type of %lo() reloc needed by RELOC, given that | |
2713 | reloc_needs_lo_p. */ | |
2714 | ||
2715 | static inline bfd_reloc_code_real_type | |
2716 | matching_lo_reloc (bfd_reloc_code_real_type reloc) | |
2717 | { | |
df58fc94 RS |
2718 | return (mips16_reloc_p (reloc) ? BFD_RELOC_MIPS16_LO16 |
2719 | : (micromips_reloc_p (reloc) ? BFD_RELOC_MICROMIPS_LO16 | |
2720 | : BFD_RELOC_LO16)); | |
5919d012 RS |
2721 | } |
2722 | ||
2723 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
2724 | relocation. */ | |
2725 | ||
2726 | static inline bfd_boolean | |
17a2f251 | 2727 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
2728 | { |
2729 | return (fixp->fx_next != NULL | |
738e5348 | 2730 | && fixp->fx_next->fx_r_type == matching_lo_reloc (fixp->fx_r_type) |
5919d012 RS |
2731 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
2732 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
2733 | } | |
2734 | ||
252b5132 RH |
2735 | /* This function returns true if modifying a register requires a |
2736 | delay. */ | |
2737 | ||
2738 | static int | |
17a2f251 | 2739 | reg_needs_delay (unsigned int reg) |
252b5132 RH |
2740 | { |
2741 | unsigned long prev_pinfo; | |
2742 | ||
47e39b9d | 2743 | prev_pinfo = history[0].insn_mo->pinfo; |
252b5132 | 2744 | if (! mips_opts.noreorder |
81912461 ILT |
2745 | && (((prev_pinfo & INSN_LOAD_MEMORY_DELAY) |
2746 | && ! gpr_interlocks) | |
2747 | || ((prev_pinfo & INSN_LOAD_COPROC_DELAY) | |
2748 | && ! cop_interlocks))) | |
252b5132 | 2749 | { |
81912461 ILT |
2750 | /* A load from a coprocessor or from memory. All load delays |
2751 | delay the use of general register rt for one instruction. */ | |
bdaaa2e1 | 2752 | /* Itbl support may require additional care here. */ |
252b5132 | 2753 | know (prev_pinfo & INSN_WRITE_GPR_T); |
df58fc94 | 2754 | if (reg == EXTRACT_OPERAND (mips_opts.micromips, RT, history[0])) |
252b5132 RH |
2755 | return 1; |
2756 | } | |
2757 | ||
2758 | return 0; | |
2759 | } | |
2760 | ||
404a8071 RS |
2761 | /* Move all labels in insn_labels to the current insertion point. */ |
2762 | ||
2763 | static void | |
2764 | mips_move_labels (void) | |
2765 | { | |
a8dbcb85 | 2766 | segment_info_type *si = seg_info (now_seg); |
404a8071 RS |
2767 | struct insn_label_list *l; |
2768 | valueT val; | |
2769 | ||
a8dbcb85 | 2770 | for (l = si->label_list; l != NULL; l = l->next) |
404a8071 | 2771 | { |
9c2799c2 | 2772 | gas_assert (S_GET_SEGMENT (l->label) == now_seg); |
404a8071 RS |
2773 | symbol_set_frag (l->label, frag_now); |
2774 | val = (valueT) frag_now_fix (); | |
df58fc94 RS |
2775 | /* MIPS16/microMIPS text labels are stored as odd. */ |
2776 | if (HAVE_CODE_COMPRESSION) | |
404a8071 RS |
2777 | ++val; |
2778 | S_SET_VALUE (l->label, val); | |
2779 | } | |
2780 | } | |
2781 | ||
5f0fe04b TS |
2782 | static bfd_boolean |
2783 | s_is_linkonce (symbolS *sym, segT from_seg) | |
2784 | { | |
2785 | bfd_boolean linkonce = FALSE; | |
2786 | segT symseg = S_GET_SEGMENT (sym); | |
2787 | ||
2788 | if (symseg != from_seg && !S_IS_LOCAL (sym)) | |
2789 | { | |
2790 | if ((bfd_get_section_flags (stdoutput, symseg) & SEC_LINK_ONCE)) | |
2791 | linkonce = TRUE; | |
2792 | #ifdef OBJ_ELF | |
2793 | /* The GNU toolchain uses an extension for ELF: a section | |
2794 | beginning with the magic string .gnu.linkonce is a | |
2795 | linkonce section. */ | |
2796 | if (strncmp (segment_name (symseg), ".gnu.linkonce", | |
2797 | sizeof ".gnu.linkonce" - 1) == 0) | |
2798 | linkonce = TRUE; | |
2799 | #endif | |
2800 | } | |
2801 | return linkonce; | |
2802 | } | |
2803 | ||
df58fc94 RS |
2804 | /* Mark instruction labels in MIPS16/microMIPS mode. This permits the |
2805 | linker to handle them specially, such as generating jalx instructions | |
2806 | when needed. We also make them odd for the duration of the assembly, | |
2807 | in order to generate the right sort of code. We will make them even | |
252b5132 RH |
2808 | in the adjust_symtab routine, while leaving them marked. This is |
2809 | convenient for the debugger and the disassembler. The linker knows | |
2810 | to make them odd again. */ | |
2811 | ||
2812 | static void | |
df58fc94 | 2813 | mips_compressed_mark_labels (void) |
252b5132 | 2814 | { |
a8dbcb85 TS |
2815 | segment_info_type *si = seg_info (now_seg); |
2816 | struct insn_label_list *l; | |
252b5132 | 2817 | |
df58fc94 | 2818 | gas_assert (HAVE_CODE_COMPRESSION); |
a8dbcb85 TS |
2819 | |
2820 | for (l = si->label_list; l != NULL; l = l->next) | |
2821 | { | |
2822 | symbolS *label = l->label; | |
2823 | ||
2824 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
f43abd2b | 2825 | if (IS_ELF) |
df58fc94 RS |
2826 | { |
2827 | if (mips_opts.mips16) | |
2828 | S_SET_OTHER (label, ELF_ST_SET_MIPS16 (S_GET_OTHER (label))); | |
2829 | else | |
2830 | S_SET_OTHER (label, ELF_ST_SET_MICROMIPS (S_GET_OTHER (label))); | |
2831 | } | |
252b5132 | 2832 | #endif |
5f0fe04b TS |
2833 | if ((S_GET_VALUE (label) & 1) == 0 |
2834 | /* Don't adjust the address if the label is global or weak, or | |
2835 | in a link-once section, since we'll be emitting symbol reloc | |
2836 | references to it which will be patched up by the linker, and | |
df58fc94 | 2837 | the final value of the symbol may or may not be MIPS16/microMIPS. */ |
5f0fe04b TS |
2838 | && ! S_IS_WEAK (label) |
2839 | && ! S_IS_EXTERNAL (label) | |
2840 | && ! s_is_linkonce (label, now_seg)) | |
a8dbcb85 | 2841 | S_SET_VALUE (label, S_GET_VALUE (label) | 1); |
252b5132 RH |
2842 | } |
2843 | } | |
2844 | ||
4d7206a2 RS |
2845 | /* End the current frag. Make it a variant frag and record the |
2846 | relaxation info. */ | |
2847 | ||
2848 | static void | |
2849 | relax_close_frag (void) | |
2850 | { | |
584892a6 | 2851 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 2852 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 2853 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
2854 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
2855 | ||
2856 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
2857 | mips_relax.first_fixup = 0; | |
2858 | } | |
2859 | ||
2860 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
2861 | See the comment above RELAX_ENCODE for more details. */ | |
2862 | ||
2863 | static void | |
2864 | relax_start (symbolS *symbol) | |
2865 | { | |
9c2799c2 | 2866 | gas_assert (mips_relax.sequence == 0); |
4d7206a2 RS |
2867 | mips_relax.sequence = 1; |
2868 | mips_relax.symbol = symbol; | |
2869 | } | |
2870 | ||
2871 | /* Start generating the second version of a relaxable sequence. | |
2872 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
2873 | |
2874 | static void | |
4d7206a2 RS |
2875 | relax_switch (void) |
2876 | { | |
9c2799c2 | 2877 | gas_assert (mips_relax.sequence == 1); |
4d7206a2 RS |
2878 | mips_relax.sequence = 2; |
2879 | } | |
2880 | ||
2881 | /* End the current relaxable sequence. */ | |
2882 | ||
2883 | static void | |
2884 | relax_end (void) | |
2885 | { | |
9c2799c2 | 2886 | gas_assert (mips_relax.sequence == 2); |
4d7206a2 RS |
2887 | relax_close_frag (); |
2888 | mips_relax.sequence = 0; | |
2889 | } | |
2890 | ||
2309ddf2 | 2891 | /* Return the mask of core registers that IP reads or writes. */ |
df58fc94 RS |
2892 | |
2893 | static unsigned int | |
2894 | gpr_mod_mask (const struct mips_cl_insn *ip) | |
2895 | { | |
2309ddf2 | 2896 | unsigned long pinfo2; |
df58fc94 RS |
2897 | unsigned int mask; |
2898 | ||
2899 | mask = 0; | |
df58fc94 RS |
2900 | pinfo2 = ip->insn_mo->pinfo2; |
2901 | if (mips_opts.micromips) | |
2902 | { | |
2903 | if (pinfo2 & INSN2_MOD_GPR_MB) | |
2904 | mask |= 1 << micromips_to_32_reg_b_map[EXTRACT_OPERAND (1, MB, *ip)]; | |
2905 | if (pinfo2 & INSN2_MOD_GPR_MC) | |
2906 | mask |= 1 << micromips_to_32_reg_c_map[EXTRACT_OPERAND (1, MC, *ip)]; | |
2907 | if (pinfo2 & INSN2_MOD_GPR_MD) | |
2908 | mask |= 1 << micromips_to_32_reg_d_map[EXTRACT_OPERAND (1, MD, *ip)]; | |
2909 | if (pinfo2 & INSN2_MOD_GPR_ME) | |
2910 | mask |= 1 << micromips_to_32_reg_e_map[EXTRACT_OPERAND (1, ME, *ip)]; | |
2911 | if (pinfo2 & INSN2_MOD_GPR_MF) | |
2912 | mask |= 1 << micromips_to_32_reg_f_map[EXTRACT_OPERAND (1, MF, *ip)]; | |
2913 | if (pinfo2 & INSN2_MOD_GPR_MG) | |
2914 | mask |= 1 << micromips_to_32_reg_g_map[EXTRACT_OPERAND (1, MG, *ip)]; | |
2915 | if (pinfo2 & INSN2_MOD_GPR_MHI) | |
2916 | { | |
2917 | mask |= 1 << micromips_to_32_reg_h_map[EXTRACT_OPERAND (1, MH, *ip)]; | |
2918 | mask |= 1 << micromips_to_32_reg_i_map[EXTRACT_OPERAND (1, MI, *ip)]; | |
2919 | } | |
2920 | if (pinfo2 & INSN2_MOD_GPR_MJ) | |
2921 | mask |= 1 << EXTRACT_OPERAND (1, MJ, *ip); | |
2922 | if (pinfo2 & INSN2_MOD_GPR_MM) | |
2923 | mask |= 1 << micromips_to_32_reg_m_map[EXTRACT_OPERAND (1, MM, *ip)]; | |
2924 | if (pinfo2 & INSN2_MOD_GPR_MN) | |
2925 | mask |= 1 << micromips_to_32_reg_n_map[EXTRACT_OPERAND (1, MN, *ip)]; | |
2926 | if (pinfo2 & INSN2_MOD_GPR_MP) | |
2927 | mask |= 1 << EXTRACT_OPERAND (1, MP, *ip); | |
2928 | if (pinfo2 & INSN2_MOD_GPR_MQ) | |
2929 | mask |= 1 << micromips_to_32_reg_q_map[EXTRACT_OPERAND (1, MQ, *ip)]; | |
2930 | if (pinfo2 & INSN2_MOD_SP) | |
2931 | mask |= 1 << SP; | |
2932 | } | |
2933 | return mask; | |
2934 | } | |
2935 | ||
4c260379 RS |
2936 | /* Return the mask of core registers that IP reads. */ |
2937 | ||
2938 | static unsigned int | |
2939 | gpr_read_mask (const struct mips_cl_insn *ip) | |
2940 | { | |
2941 | unsigned long pinfo, pinfo2; | |
2942 | unsigned int mask; | |
2943 | ||
df58fc94 | 2944 | mask = gpr_mod_mask (ip); |
4c260379 RS |
2945 | pinfo = ip->insn_mo->pinfo; |
2946 | pinfo2 = ip->insn_mo->pinfo2; | |
2947 | if (mips_opts.mips16) | |
2948 | { | |
2949 | if (pinfo & MIPS16_INSN_READ_X) | |
2950 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)]; | |
2951 | if (pinfo & MIPS16_INSN_READ_Y) | |
2952 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)]; | |
2953 | if (pinfo & MIPS16_INSN_READ_T) | |
2954 | mask |= 1 << TREG; | |
2955 | if (pinfo & MIPS16_INSN_READ_SP) | |
2956 | mask |= 1 << SP; | |
2957 | if (pinfo & MIPS16_INSN_READ_31) | |
2958 | mask |= 1 << RA; | |
2959 | if (pinfo & MIPS16_INSN_READ_Z) | |
2960 | mask |= 1 << (mips16_to_32_reg_map | |
2961 | [MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip)]); | |
2962 | if (pinfo & MIPS16_INSN_READ_GPR_X) | |
2963 | mask |= 1 << MIPS16_EXTRACT_OPERAND (REGR32, *ip); | |
2964 | } | |
2965 | else | |
2966 | { | |
2967 | if (pinfo2 & INSN2_READ_GPR_D) | |
2309ddf2 | 2968 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); |
4c260379 | 2969 | if (pinfo & INSN_READ_GPR_T) |
2309ddf2 | 2970 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
4c260379 | 2971 | if (pinfo & INSN_READ_GPR_S) |
2309ddf2 MR |
2972 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); |
2973 | if (pinfo2 & INSN2_READ_GP) | |
2974 | mask |= 1 << GP; | |
2975 | if (pinfo2 & INSN2_READ_GPR_31) | |
2976 | mask |= 1 << RA; | |
4c260379 | 2977 | if (pinfo2 & INSN2_READ_GPR_Z) |
2309ddf2 | 2978 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RZ, *ip); |
4c260379 | 2979 | } |
fe35f09f RS |
2980 | /* Don't include register 0. */ |
2981 | return mask & ~1; | |
4c260379 RS |
2982 | } |
2983 | ||
2984 | /* Return the mask of core registers that IP writes. */ | |
2985 | ||
2986 | static unsigned int | |
2987 | gpr_write_mask (const struct mips_cl_insn *ip) | |
2988 | { | |
2989 | unsigned long pinfo, pinfo2; | |
2990 | unsigned int mask; | |
2991 | ||
df58fc94 | 2992 | mask = gpr_mod_mask (ip); |
4c260379 RS |
2993 | pinfo = ip->insn_mo->pinfo; |
2994 | pinfo2 = ip->insn_mo->pinfo2; | |
2995 | if (mips_opts.mips16) | |
2996 | { | |
2997 | if (pinfo & MIPS16_INSN_WRITE_X) | |
2998 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)]; | |
2999 | if (pinfo & MIPS16_INSN_WRITE_Y) | |
3000 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)]; | |
3001 | if (pinfo & MIPS16_INSN_WRITE_Z) | |
3002 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RZ, *ip)]; | |
3003 | if (pinfo & MIPS16_INSN_WRITE_T) | |
3004 | mask |= 1 << TREG; | |
3005 | if (pinfo & MIPS16_INSN_WRITE_SP) | |
3006 | mask |= 1 << SP; | |
3007 | if (pinfo & MIPS16_INSN_WRITE_31) | |
3008 | mask |= 1 << RA; | |
3009 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
3010 | mask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
3011 | } | |
3012 | else | |
3013 | { | |
3014 | if (pinfo & INSN_WRITE_GPR_D) | |
df58fc94 | 3015 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); |
4c260379 | 3016 | if (pinfo & INSN_WRITE_GPR_T) |
df58fc94 | 3017 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
2309ddf2 MR |
3018 | if (pinfo2 & INSN2_WRITE_GPR_S) |
3019 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); | |
4c260379 RS |
3020 | if (pinfo & INSN_WRITE_GPR_31) |
3021 | mask |= 1 << RA; | |
3022 | if (pinfo2 & INSN2_WRITE_GPR_Z) | |
df58fc94 | 3023 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RZ, *ip); |
4c260379 | 3024 | } |
fe35f09f RS |
3025 | /* Don't include register 0. */ |
3026 | return mask & ~1; | |
4c260379 RS |
3027 | } |
3028 | ||
3029 | /* Return the mask of floating-point registers that IP reads. */ | |
3030 | ||
3031 | static unsigned int | |
3032 | fpr_read_mask (const struct mips_cl_insn *ip) | |
3033 | { | |
3034 | unsigned long pinfo, pinfo2; | |
3035 | unsigned int mask; | |
3036 | ||
3037 | mask = 0; | |
3038 | pinfo = ip->insn_mo->pinfo; | |
3039 | pinfo2 = ip->insn_mo->pinfo2; | |
2309ddf2 | 3040 | if (!mips_opts.mips16) |
df58fc94 RS |
3041 | { |
3042 | if (pinfo2 & INSN2_READ_FPR_D) | |
2309ddf2 | 3043 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FD, *ip); |
4c260379 | 3044 | if (pinfo & INSN_READ_FPR_S) |
df58fc94 | 3045 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FS, *ip); |
4c260379 | 3046 | if (pinfo & INSN_READ_FPR_T) |
df58fc94 | 3047 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FT, *ip); |
4c260379 | 3048 | if (pinfo & INSN_READ_FPR_R) |
df58fc94 | 3049 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FR, *ip); |
4c260379 | 3050 | if (pinfo2 & INSN2_READ_FPR_Z) |
df58fc94 | 3051 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FZ, *ip); |
4c260379 RS |
3052 | } |
3053 | /* Conservatively treat all operands to an FP_D instruction are doubles. | |
3054 | (This is overly pessimistic for things like cvt.d.s.) */ | |
3055 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
3056 | mask |= mask << 1; | |
3057 | return mask; | |
3058 | } | |
3059 | ||
3060 | /* Return the mask of floating-point registers that IP writes. */ | |
3061 | ||
3062 | static unsigned int | |
3063 | fpr_write_mask (const struct mips_cl_insn *ip) | |
3064 | { | |
3065 | unsigned long pinfo, pinfo2; | |
3066 | unsigned int mask; | |
3067 | ||
3068 | mask = 0; | |
3069 | pinfo = ip->insn_mo->pinfo; | |
3070 | pinfo2 = ip->insn_mo->pinfo2; | |
2309ddf2 | 3071 | if (!mips_opts.mips16) |
4c260379 RS |
3072 | { |
3073 | if (pinfo & INSN_WRITE_FPR_D) | |
df58fc94 | 3074 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FD, *ip); |
4c260379 | 3075 | if (pinfo & INSN_WRITE_FPR_S) |
df58fc94 | 3076 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FS, *ip); |
4c260379 | 3077 | if (pinfo & INSN_WRITE_FPR_T) |
df58fc94 | 3078 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FT, *ip); |
4c260379 | 3079 | if (pinfo2 & INSN2_WRITE_FPR_Z) |
df58fc94 | 3080 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FZ, *ip); |
4c260379 RS |
3081 | } |
3082 | /* Conservatively treat all operands to an FP_D instruction are doubles. | |
3083 | (This is overly pessimistic for things like cvt.s.d.) */ | |
3084 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
3085 | mask |= mask << 1; | |
3086 | return mask; | |
3087 | } | |
3088 | ||
71400594 RS |
3089 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
3090 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
3091 | by VR4120 errata. */ | |
4d7206a2 | 3092 | |
71400594 RS |
3093 | static unsigned int |
3094 | classify_vr4120_insn (const char *name) | |
252b5132 | 3095 | { |
71400594 RS |
3096 | if (strncmp (name, "macc", 4) == 0) |
3097 | return FIX_VR4120_MACC; | |
3098 | if (strncmp (name, "dmacc", 5) == 0) | |
3099 | return FIX_VR4120_DMACC; | |
3100 | if (strncmp (name, "mult", 4) == 0) | |
3101 | return FIX_VR4120_MULT; | |
3102 | if (strncmp (name, "dmult", 5) == 0) | |
3103 | return FIX_VR4120_DMULT; | |
3104 | if (strstr (name, "div")) | |
3105 | return FIX_VR4120_DIV; | |
3106 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
3107 | return FIX_VR4120_MTHILO; | |
3108 | return NUM_FIX_VR4120_CLASSES; | |
3109 | } | |
252b5132 | 3110 | |
ff239038 CM |
3111 | #define INSN_ERET 0x42000018 |
3112 | #define INSN_DERET 0x4200001f | |
3113 | ||
71400594 RS |
3114 | /* Return the number of instructions that must separate INSN1 and INSN2, |
3115 | where INSN1 is the earlier instruction. Return the worst-case value | |
3116 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 3117 | |
71400594 RS |
3118 | static unsigned int |
3119 | insns_between (const struct mips_cl_insn *insn1, | |
3120 | const struct mips_cl_insn *insn2) | |
3121 | { | |
3122 | unsigned long pinfo1, pinfo2; | |
4c260379 | 3123 | unsigned int mask; |
71400594 RS |
3124 | |
3125 | /* This function needs to know which pinfo flags are set for INSN2 | |
3126 | and which registers INSN2 uses. The former is stored in PINFO2 and | |
4c260379 RS |
3127 | the latter is tested via INSN2_USES_GPR. If INSN2 is null, PINFO2 |
3128 | will have every flag set and INSN2_USES_GPR will always return true. */ | |
71400594 RS |
3129 | pinfo1 = insn1->insn_mo->pinfo; |
3130 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 3131 | |
4c260379 RS |
3132 | #define INSN2_USES_GPR(REG) \ |
3133 | (insn2 == NULL || (gpr_read_mask (insn2) & (1U << (REG))) != 0) | |
71400594 RS |
3134 | |
3135 | /* For most targets, write-after-read dependencies on the HI and LO | |
3136 | registers must be separated by at least two instructions. */ | |
3137 | if (!hilo_interlocks) | |
252b5132 | 3138 | { |
71400594 RS |
3139 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
3140 | return 2; | |
3141 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
3142 | return 2; | |
3143 | } | |
3144 | ||
3145 | /* If we're working around r7000 errata, there must be two instructions | |
3146 | between an mfhi or mflo and any instruction that uses the result. */ | |
3147 | if (mips_7000_hilo_fix | |
df58fc94 | 3148 | && !mips_opts.micromips |
71400594 | 3149 | && MF_HILO_INSN (pinfo1) |
df58fc94 | 3150 | && INSN2_USES_GPR (EXTRACT_OPERAND (0, RD, *insn1))) |
71400594 RS |
3151 | return 2; |
3152 | ||
ff239038 CM |
3153 | /* If we're working around 24K errata, one instruction is required |
3154 | if an ERET or DERET is followed by a branch instruction. */ | |
df58fc94 | 3155 | if (mips_fix_24k && !mips_opts.micromips) |
ff239038 CM |
3156 | { |
3157 | if (insn1->insn_opcode == INSN_ERET | |
3158 | || insn1->insn_opcode == INSN_DERET) | |
3159 | { | |
3160 | if (insn2 == NULL | |
3161 | || insn2->insn_opcode == INSN_ERET | |
3162 | || insn2->insn_opcode == INSN_DERET | |
3163 | || (insn2->insn_mo->pinfo | |
3164 | & (INSN_UNCOND_BRANCH_DELAY | |
3165 | | INSN_COND_BRANCH_DELAY | |
3166 | | INSN_COND_BRANCH_LIKELY)) != 0) | |
3167 | return 1; | |
3168 | } | |
3169 | } | |
3170 | ||
71400594 RS |
3171 | /* If working around VR4120 errata, check for combinations that need |
3172 | a single intervening instruction. */ | |
df58fc94 | 3173 | if (mips_fix_vr4120 && !mips_opts.micromips) |
71400594 RS |
3174 | { |
3175 | unsigned int class1, class2; | |
252b5132 | 3176 | |
71400594 RS |
3177 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
3178 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 3179 | { |
71400594 RS |
3180 | if (insn2 == NULL) |
3181 | return 1; | |
3182 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
3183 | if (vr4120_conflicts[class1] & (1 << class2)) | |
3184 | return 1; | |
252b5132 | 3185 | } |
71400594 RS |
3186 | } |
3187 | ||
df58fc94 | 3188 | if (!HAVE_CODE_COMPRESSION) |
71400594 RS |
3189 | { |
3190 | /* Check for GPR or coprocessor load delays. All such delays | |
3191 | are on the RT register. */ | |
3192 | /* Itbl support may require additional care here. */ | |
3193 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY_DELAY)) | |
3194 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC_DELAY))) | |
252b5132 | 3195 | { |
71400594 | 3196 | know (pinfo1 & INSN_WRITE_GPR_T); |
df58fc94 | 3197 | if (INSN2_USES_GPR (EXTRACT_OPERAND (0, RT, *insn1))) |
71400594 RS |
3198 | return 1; |
3199 | } | |
3200 | ||
3201 | /* Check for generic coprocessor hazards. | |
3202 | ||
3203 | This case is not handled very well. There is no special | |
3204 | knowledge of CP0 handling, and the coprocessors other than | |
3205 | the floating point unit are not distinguished at all. */ | |
3206 | /* Itbl support may require additional care here. FIXME! | |
3207 | Need to modify this to include knowledge about | |
3208 | user specified delays! */ | |
3209 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE_DELAY)) | |
3210 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) | |
3211 | { | |
3212 | /* Handle cases where INSN1 writes to a known general coprocessor | |
3213 | register. There must be a one instruction delay before INSN2 | |
3214 | if INSN2 reads that register, otherwise no delay is needed. */ | |
4c260379 RS |
3215 | mask = fpr_write_mask (insn1); |
3216 | if (mask != 0) | |
252b5132 | 3217 | { |
4c260379 | 3218 | if (!insn2 || (mask & fpr_read_mask (insn2)) != 0) |
71400594 | 3219 | return 1; |
252b5132 RH |
3220 | } |
3221 | else | |
3222 | { | |
71400594 RS |
3223 | /* Read-after-write dependencies on the control registers |
3224 | require a two-instruction gap. */ | |
3225 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
3226 | && (pinfo2 & INSN_READ_COND_CODE)) | |
3227 | return 2; | |
3228 | ||
3229 | /* We don't know exactly what INSN1 does. If INSN2 is | |
3230 | also a coprocessor instruction, assume there must be | |
3231 | a one instruction gap. */ | |
3232 | if (pinfo2 & INSN_COP) | |
3233 | return 1; | |
252b5132 RH |
3234 | } |
3235 | } | |
6b76fefe | 3236 | |
71400594 RS |
3237 | /* Check for read-after-write dependencies on the coprocessor |
3238 | control registers in cases where INSN1 does not need a general | |
3239 | coprocessor delay. This means that INSN1 is a floating point | |
3240 | comparison instruction. */ | |
3241 | /* Itbl support may require additional care here. */ | |
3242 | else if (!cop_interlocks | |
3243 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
3244 | && (pinfo2 & INSN_READ_COND_CODE)) | |
3245 | return 1; | |
3246 | } | |
6b76fefe | 3247 | |
4c260379 | 3248 | #undef INSN2_USES_GPR |
6b76fefe | 3249 | |
71400594 RS |
3250 | return 0; |
3251 | } | |
6b76fefe | 3252 | |
7d8e00cf RS |
3253 | /* Return the number of nops that would be needed to work around the |
3254 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
932d1a1b RS |
3255 | the MAX_VR4130_NOPS instructions described by HIST. Ignore hazards |
3256 | that are contained within the first IGNORE instructions of HIST. */ | |
7d8e00cf RS |
3257 | |
3258 | static int | |
932d1a1b | 3259 | nops_for_vr4130 (int ignore, const struct mips_cl_insn *hist, |
7d8e00cf RS |
3260 | const struct mips_cl_insn *insn) |
3261 | { | |
4c260379 RS |
3262 | int i, j; |
3263 | unsigned int mask; | |
7d8e00cf RS |
3264 | |
3265 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
3266 | are not affected by the errata. */ | |
3267 | if (insn != 0 | |
3268 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
3269 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
3270 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
3271 | return 0; | |
3272 | ||
3273 | /* Search for the first MFLO or MFHI. */ | |
3274 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
91d6fa6a | 3275 | if (MF_HILO_INSN (hist[i].insn_mo->pinfo)) |
7d8e00cf RS |
3276 | { |
3277 | /* Extract the destination register. */ | |
4c260379 | 3278 | mask = gpr_write_mask (&hist[i]); |
7d8e00cf RS |
3279 | |
3280 | /* No nops are needed if INSN reads that register. */ | |
4c260379 | 3281 | if (insn != NULL && (gpr_read_mask (insn) & mask) != 0) |
7d8e00cf RS |
3282 | return 0; |
3283 | ||
3284 | /* ...or if any of the intervening instructions do. */ | |
3285 | for (j = 0; j < i; j++) | |
4c260379 | 3286 | if (gpr_read_mask (&hist[j]) & mask) |
7d8e00cf RS |
3287 | return 0; |
3288 | ||
932d1a1b RS |
3289 | if (i >= ignore) |
3290 | return MAX_VR4130_NOPS - i; | |
7d8e00cf RS |
3291 | } |
3292 | return 0; | |
3293 | } | |
3294 | ||
15be625d CM |
3295 | #define BASE_REG_EQ(INSN1, INSN2) \ |
3296 | ((((INSN1) >> OP_SH_RS) & OP_MASK_RS) \ | |
3297 | == (((INSN2) >> OP_SH_RS) & OP_MASK_RS)) | |
3298 | ||
3299 | /* Return the minimum alignment for this store instruction. */ | |
3300 | ||
3301 | static int | |
3302 | fix_24k_align_to (const struct mips_opcode *mo) | |
3303 | { | |
3304 | if (strcmp (mo->name, "sh") == 0) | |
3305 | return 2; | |
3306 | ||
3307 | if (strcmp (mo->name, "swc1") == 0 | |
3308 | || strcmp (mo->name, "swc2") == 0 | |
3309 | || strcmp (mo->name, "sw") == 0 | |
3310 | || strcmp (mo->name, "sc") == 0 | |
3311 | || strcmp (mo->name, "s.s") == 0) | |
3312 | return 4; | |
3313 | ||
3314 | if (strcmp (mo->name, "sdc1") == 0 | |
3315 | || strcmp (mo->name, "sdc2") == 0 | |
3316 | || strcmp (mo->name, "s.d") == 0) | |
3317 | return 8; | |
3318 | ||
3319 | /* sb, swl, swr */ | |
3320 | return 1; | |
3321 | } | |
3322 | ||
3323 | struct fix_24k_store_info | |
3324 | { | |
3325 | /* Immediate offset, if any, for this store instruction. */ | |
3326 | short off; | |
3327 | /* Alignment required by this store instruction. */ | |
3328 | int align_to; | |
3329 | /* True for register offsets. */ | |
3330 | int register_offset; | |
3331 | }; | |
3332 | ||
3333 | /* Comparison function used by qsort. */ | |
3334 | ||
3335 | static int | |
3336 | fix_24k_sort (const void *a, const void *b) | |
3337 | { | |
3338 | const struct fix_24k_store_info *pos1 = a; | |
3339 | const struct fix_24k_store_info *pos2 = b; | |
3340 | ||
3341 | return (pos1->off - pos2->off); | |
3342 | } | |
3343 | ||
3344 | /* INSN is a store instruction. Try to record the store information | |
3345 | in STINFO. Return false if the information isn't known. */ | |
3346 | ||
3347 | static bfd_boolean | |
3348 | fix_24k_record_store_info (struct fix_24k_store_info *stinfo, | |
ab9794cf | 3349 | const struct mips_cl_insn *insn) |
15be625d CM |
3350 | { |
3351 | /* The instruction must have a known offset. */ | |
3352 | if (!insn->complete_p || !strstr (insn->insn_mo->args, "o(")) | |
3353 | return FALSE; | |
3354 | ||
3355 | stinfo->off = (insn->insn_opcode >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE; | |
3356 | stinfo->align_to = fix_24k_align_to (insn->insn_mo); | |
3357 | return TRUE; | |
3358 | } | |
3359 | ||
932d1a1b RS |
3360 | /* Return the number of nops that would be needed to work around the 24k |
3361 | "lost data on stores during refill" errata if instruction INSN | |
3362 | immediately followed the 2 instructions described by HIST. | |
3363 | Ignore hazards that are contained within the first IGNORE | |
3364 | instructions of HIST. | |
3365 | ||
3366 | Problem: The FSB (fetch store buffer) acts as an intermediate buffer | |
3367 | for the data cache refills and store data. The following describes | |
3368 | the scenario where the store data could be lost. | |
3369 | ||
3370 | * A data cache miss, due to either a load or a store, causing fill | |
3371 | data to be supplied by the memory subsystem | |
3372 | * The first three doublewords of fill data are returned and written | |
3373 | into the cache | |
3374 | * A sequence of four stores occurs in consecutive cycles around the | |
3375 | final doubleword of the fill: | |
3376 | * Store A | |
3377 | * Store B | |
3378 | * Store C | |
3379 | * Zero, One or more instructions | |
3380 | * Store D | |
3381 | ||
3382 | The four stores A-D must be to different doublewords of the line that | |
3383 | is being filled. The fourth instruction in the sequence above permits | |
3384 | the fill of the final doubleword to be transferred from the FSB into | |
3385 | the cache. In the sequence above, the stores may be either integer | |
3386 | (sb, sh, sw, swr, swl, sc) or coprocessor (swc1/swc2, sdc1/sdc2, | |
3387 | swxc1, sdxc1, suxc1) stores, as long as the four stores are to | |
3388 | different doublewords on the line. If the floating point unit is | |
3389 | running in 1:2 mode, it is not possible to create the sequence above | |
3390 | using only floating point store instructions. | |
15be625d CM |
3391 | |
3392 | In this case, the cache line being filled is incorrectly marked | |
3393 | invalid, thereby losing the data from any store to the line that | |
3394 | occurs between the original miss and the completion of the five | |
3395 | cycle sequence shown above. | |
3396 | ||
932d1a1b | 3397 | The workarounds are: |
15be625d | 3398 | |
932d1a1b RS |
3399 | * Run the data cache in write-through mode. |
3400 | * Insert a non-store instruction between | |
3401 | Store A and Store B or Store B and Store C. */ | |
15be625d CM |
3402 | |
3403 | static int | |
932d1a1b | 3404 | nops_for_24k (int ignore, const struct mips_cl_insn *hist, |
15be625d CM |
3405 | const struct mips_cl_insn *insn) |
3406 | { | |
3407 | struct fix_24k_store_info pos[3]; | |
3408 | int align, i, base_offset; | |
3409 | ||
932d1a1b RS |
3410 | if (ignore >= 2) |
3411 | return 0; | |
3412 | ||
ab9794cf RS |
3413 | /* If the previous instruction wasn't a store, there's nothing to |
3414 | worry about. */ | |
15be625d CM |
3415 | if ((hist[0].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) |
3416 | return 0; | |
3417 | ||
ab9794cf RS |
3418 | /* If the instructions after the previous one are unknown, we have |
3419 | to assume the worst. */ | |
3420 | if (!insn) | |
15be625d CM |
3421 | return 1; |
3422 | ||
ab9794cf RS |
3423 | /* Check whether we are dealing with three consecutive stores. */ |
3424 | if ((insn->insn_mo->pinfo & INSN_STORE_MEMORY) == 0 | |
3425 | || (hist[1].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) | |
15be625d CM |
3426 | return 0; |
3427 | ||
3428 | /* If we don't know the relationship between the store addresses, | |
3429 | assume the worst. */ | |
ab9794cf | 3430 | if (!BASE_REG_EQ (insn->insn_opcode, hist[0].insn_opcode) |
15be625d CM |
3431 | || !BASE_REG_EQ (insn->insn_opcode, hist[1].insn_opcode)) |
3432 | return 1; | |
3433 | ||
3434 | if (!fix_24k_record_store_info (&pos[0], insn) | |
3435 | || !fix_24k_record_store_info (&pos[1], &hist[0]) | |
3436 | || !fix_24k_record_store_info (&pos[2], &hist[1])) | |
3437 | return 1; | |
3438 | ||
3439 | qsort (&pos, 3, sizeof (struct fix_24k_store_info), fix_24k_sort); | |
3440 | ||
3441 | /* Pick a value of ALIGN and X such that all offsets are adjusted by | |
3442 | X bytes and such that the base register + X is known to be aligned | |
3443 | to align bytes. */ | |
3444 | ||
3445 | if (((insn->insn_opcode >> OP_SH_RS) & OP_MASK_RS) == SP) | |
3446 | align = 8; | |
3447 | else | |
3448 | { | |
3449 | align = pos[0].align_to; | |
3450 | base_offset = pos[0].off; | |
3451 | for (i = 1; i < 3; i++) | |
3452 | if (align < pos[i].align_to) | |
3453 | { | |
3454 | align = pos[i].align_to; | |
3455 | base_offset = pos[i].off; | |
3456 | } | |
3457 | for (i = 0; i < 3; i++) | |
3458 | pos[i].off -= base_offset; | |
3459 | } | |
3460 | ||
3461 | pos[0].off &= ~align + 1; | |
3462 | pos[1].off &= ~align + 1; | |
3463 | pos[2].off &= ~align + 1; | |
3464 | ||
3465 | /* If any two stores write to the same chunk, they also write to the | |
3466 | same doubleword. The offsets are still sorted at this point. */ | |
3467 | if (pos[0].off == pos[1].off || pos[1].off == pos[2].off) | |
3468 | return 0; | |
3469 | ||
3470 | /* A range of at least 9 bytes is needed for the stores to be in | |
3471 | non-overlapping doublewords. */ | |
3472 | if (pos[2].off - pos[0].off <= 8) | |
3473 | return 0; | |
3474 | ||
3475 | if (pos[2].off - pos[1].off >= 24 | |
3476 | || pos[1].off - pos[0].off >= 24 | |
3477 | || pos[2].off - pos[0].off >= 32) | |
3478 | return 0; | |
3479 | ||
3480 | return 1; | |
3481 | } | |
3482 | ||
71400594 | 3483 | /* Return the number of nops that would be needed if instruction INSN |
91d6fa6a | 3484 | immediately followed the MAX_NOPS instructions given by HIST, |
932d1a1b RS |
3485 | where HIST[0] is the most recent instruction. Ignore hazards |
3486 | between INSN and the first IGNORE instructions in HIST. | |
3487 | ||
3488 | If INSN is null, return the worse-case number of nops for any | |
3489 | instruction. */ | |
bdaaa2e1 | 3490 | |
71400594 | 3491 | static int |
932d1a1b | 3492 | nops_for_insn (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
3493 | const struct mips_cl_insn *insn) |
3494 | { | |
3495 | int i, nops, tmp_nops; | |
bdaaa2e1 | 3496 | |
71400594 | 3497 | nops = 0; |
932d1a1b | 3498 | for (i = ignore; i < MAX_DELAY_NOPS; i++) |
65b02341 | 3499 | { |
91d6fa6a | 3500 | tmp_nops = insns_between (hist + i, insn) - i; |
65b02341 RS |
3501 | if (tmp_nops > nops) |
3502 | nops = tmp_nops; | |
3503 | } | |
7d8e00cf | 3504 | |
df58fc94 | 3505 | if (mips_fix_vr4130 && !mips_opts.micromips) |
7d8e00cf | 3506 | { |
932d1a1b | 3507 | tmp_nops = nops_for_vr4130 (ignore, hist, insn); |
7d8e00cf RS |
3508 | if (tmp_nops > nops) |
3509 | nops = tmp_nops; | |
3510 | } | |
3511 | ||
df58fc94 | 3512 | if (mips_fix_24k && !mips_opts.micromips) |
15be625d | 3513 | { |
932d1a1b | 3514 | tmp_nops = nops_for_24k (ignore, hist, insn); |
15be625d CM |
3515 | if (tmp_nops > nops) |
3516 | nops = tmp_nops; | |
3517 | } | |
3518 | ||
71400594 RS |
3519 | return nops; |
3520 | } | |
252b5132 | 3521 | |
71400594 | 3522 | /* The variable arguments provide NUM_INSNS extra instructions that |
91d6fa6a | 3523 | might be added to HIST. Return the largest number of nops that |
932d1a1b RS |
3524 | would be needed after the extended sequence, ignoring hazards |
3525 | in the first IGNORE instructions. */ | |
252b5132 | 3526 | |
71400594 | 3527 | static int |
932d1a1b RS |
3528 | nops_for_sequence (int num_insns, int ignore, |
3529 | const struct mips_cl_insn *hist, ...) | |
71400594 RS |
3530 | { |
3531 | va_list args; | |
3532 | struct mips_cl_insn buffer[MAX_NOPS]; | |
3533 | struct mips_cl_insn *cursor; | |
3534 | int nops; | |
3535 | ||
91d6fa6a | 3536 | va_start (args, hist); |
71400594 | 3537 | cursor = buffer + num_insns; |
91d6fa6a | 3538 | memcpy (cursor, hist, (MAX_NOPS - num_insns) * sizeof (*cursor)); |
71400594 RS |
3539 | while (cursor > buffer) |
3540 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
3541 | ||
932d1a1b | 3542 | nops = nops_for_insn (ignore, buffer, NULL); |
71400594 RS |
3543 | va_end (args); |
3544 | return nops; | |
3545 | } | |
252b5132 | 3546 | |
71400594 RS |
3547 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
3548 | worst-case delay for the branch target. */ | |
252b5132 | 3549 | |
71400594 | 3550 | static int |
932d1a1b | 3551 | nops_for_insn_or_target (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
3552 | const struct mips_cl_insn *insn) |
3553 | { | |
3554 | int nops, tmp_nops; | |
60b63b72 | 3555 | |
932d1a1b | 3556 | nops = nops_for_insn (ignore, hist, insn); |
71400594 RS |
3557 | if (insn->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY |
3558 | | INSN_COND_BRANCH_DELAY | |
3559 | | INSN_COND_BRANCH_LIKELY)) | |
3560 | { | |
932d1a1b RS |
3561 | tmp_nops = nops_for_sequence (2, ignore ? ignore + 2 : 0, |
3562 | hist, insn, NOP_INSN); | |
71400594 RS |
3563 | if (tmp_nops > nops) |
3564 | nops = tmp_nops; | |
3565 | } | |
9a2c7088 MR |
3566 | else if (mips_opts.mips16 |
3567 | && (insn->insn_mo->pinfo & (MIPS16_INSN_UNCOND_BRANCH | |
3568 | | MIPS16_INSN_COND_BRANCH))) | |
71400594 | 3569 | { |
932d1a1b | 3570 | tmp_nops = nops_for_sequence (1, ignore ? ignore + 1 : 0, hist, insn); |
71400594 RS |
3571 | if (tmp_nops > nops) |
3572 | nops = tmp_nops; | |
3573 | } | |
3574 | return nops; | |
3575 | } | |
3576 | ||
c67a084a NC |
3577 | /* Fix NOP issue: Replace nops by "or at,at,zero". */ |
3578 | ||
3579 | static void | |
3580 | fix_loongson2f_nop (struct mips_cl_insn * ip) | |
3581 | { | |
df58fc94 | 3582 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
3583 | if (strcmp (ip->insn_mo->name, "nop") == 0) |
3584 | ip->insn_opcode = LOONGSON2F_NOP_INSN; | |
3585 | } | |
3586 | ||
3587 | /* Fix Jump Issue: Eliminate instruction fetch from outside 256M region | |
3588 | jr target pc &= 'hffff_ffff_cfff_ffff. */ | |
3589 | ||
3590 | static void | |
3591 | fix_loongson2f_jump (struct mips_cl_insn * ip) | |
3592 | { | |
df58fc94 | 3593 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
3594 | if (strcmp (ip->insn_mo->name, "j") == 0 |
3595 | || strcmp (ip->insn_mo->name, "jr") == 0 | |
3596 | || strcmp (ip->insn_mo->name, "jalr") == 0) | |
3597 | { | |
3598 | int sreg; | |
3599 | expressionS ep; | |
3600 | ||
3601 | if (! mips_opts.at) | |
3602 | return; | |
3603 | ||
df58fc94 | 3604 | sreg = EXTRACT_OPERAND (0, RS, *ip); |
c67a084a NC |
3605 | if (sreg == ZERO || sreg == KT0 || sreg == KT1 || sreg == ATREG) |
3606 | return; | |
3607 | ||
3608 | ep.X_op = O_constant; | |
3609 | ep.X_add_number = 0xcfff0000; | |
3610 | macro_build (&ep, "lui", "t,u", ATREG, BFD_RELOC_HI16); | |
3611 | ep.X_add_number = 0xffff; | |
3612 | macro_build (&ep, "ori", "t,r,i", ATREG, ATREG, BFD_RELOC_LO16); | |
3613 | macro_build (NULL, "and", "d,v,t", sreg, sreg, ATREG); | |
3614 | } | |
3615 | } | |
3616 | ||
3617 | static void | |
3618 | fix_loongson2f (struct mips_cl_insn * ip) | |
3619 | { | |
3620 | if (mips_fix_loongson2f_nop) | |
3621 | fix_loongson2f_nop (ip); | |
3622 | ||
3623 | if (mips_fix_loongson2f_jump) | |
3624 | fix_loongson2f_jump (ip); | |
3625 | } | |
3626 | ||
a4e06468 RS |
3627 | /* IP is a branch that has a delay slot, and we need to fill it |
3628 | automatically. Return true if we can do that by swapping IP | |
3629 | with the previous instruction. */ | |
3630 | ||
3631 | static bfd_boolean | |
3632 | can_swap_branch_p (struct mips_cl_insn *ip) | |
3633 | { | |
df58fc94 | 3634 | unsigned long pinfo, pinfo2, prev_pinfo; |
a4e06468 RS |
3635 | unsigned int gpr_read, gpr_write, prev_gpr_read, prev_gpr_write; |
3636 | ||
df58fc94 RS |
3637 | /* For microMIPS, disable reordering. */ |
3638 | if (mips_opts.micromips) | |
3639 | return FALSE; | |
3640 | ||
a4e06468 RS |
3641 | /* -O2 and above is required for this optimization. */ |
3642 | if (mips_optimize < 2) | |
3643 | return FALSE; | |
3644 | ||
3645 | /* If we have seen .set volatile or .set nomove, don't optimize. */ | |
3646 | if (mips_opts.nomove) | |
3647 | return FALSE; | |
3648 | ||
3649 | /* We can't swap if the previous instruction's position is fixed. */ | |
3650 | if (history[0].fixed_p) | |
3651 | return FALSE; | |
3652 | ||
3653 | /* If the previous previous insn was in a .set noreorder, we can't | |
3654 | swap. Actually, the MIPS assembler will swap in this situation. | |
3655 | However, gcc configured -with-gnu-as will generate code like | |
3656 | ||
3657 | .set noreorder | |
3658 | lw $4,XXX | |
3659 | .set reorder | |
3660 | INSN | |
3661 | bne $4,$0,foo | |
3662 | ||
3663 | in which we can not swap the bne and INSN. If gcc is not configured | |
3664 | -with-gnu-as, it does not output the .set pseudo-ops. */ | |
3665 | if (history[1].noreorder_p) | |
3666 | return FALSE; | |
3667 | ||
3668 | /* If the previous instruction had a fixup in mips16 mode, we can not | |
3669 | swap. This normally means that the previous instruction was a 4 | |
3670 | byte branch anyhow. */ | |
3671 | if (mips_opts.mips16 && history[0].fixp[0]) | |
3672 | return FALSE; | |
3673 | ||
3674 | /* If the branch is itself the target of a branch, we can not swap. | |
3675 | We cheat on this; all we check for is whether there is a label on | |
3676 | this instruction. If there are any branches to anything other than | |
3677 | a label, users must use .set noreorder. */ | |
3678 | if (seg_info (now_seg)->label_list) | |
3679 | return FALSE; | |
3680 | ||
3681 | /* If the previous instruction is in a variant frag other than this | |
2309ddf2 MR |
3682 | branch's one, we cannot do the swap. This does not apply to |
3683 | MIPS16/microMIPS code, which uses variant frags for different | |
3684 | purposes. */ | |
df58fc94 | 3685 | if (!HAVE_CODE_COMPRESSION |
a4e06468 RS |
3686 | && history[0].frag |
3687 | && history[0].frag->fr_type == rs_machine_dependent) | |
3688 | return FALSE; | |
3689 | ||
bcd530a7 RS |
3690 | /* We do not swap with instructions that cannot architecturally |
3691 | be placed in a branch delay slot, such as SYNC or ERET. We | |
3692 | also refrain from swapping with a trap instruction, since it | |
3693 | complicates trap handlers to have the trap instruction be in | |
3694 | a delay slot. */ | |
a4e06468 | 3695 | prev_pinfo = history[0].insn_mo->pinfo; |
bcd530a7 | 3696 | if (prev_pinfo & INSN_NO_DELAY_SLOT) |
a4e06468 RS |
3697 | return FALSE; |
3698 | ||
3699 | /* Check for conflicts between the branch and the instructions | |
3700 | before the candidate delay slot. */ | |
3701 | if (nops_for_insn (0, history + 1, ip) > 0) | |
3702 | return FALSE; | |
3703 | ||
3704 | /* Check for conflicts between the swapped sequence and the | |
3705 | target of the branch. */ | |
3706 | if (nops_for_sequence (2, 0, history + 1, ip, history) > 0) | |
3707 | return FALSE; | |
3708 | ||
3709 | /* If the branch reads a register that the previous | |
3710 | instruction sets, we can not swap. */ | |
3711 | gpr_read = gpr_read_mask (ip); | |
3712 | prev_gpr_write = gpr_write_mask (&history[0]); | |
3713 | if (gpr_read & prev_gpr_write) | |
3714 | return FALSE; | |
3715 | ||
3716 | /* If the branch writes a register that the previous | |
3717 | instruction sets, we can not swap. */ | |
3718 | gpr_write = gpr_write_mask (ip); | |
3719 | if (gpr_write & prev_gpr_write) | |
3720 | return FALSE; | |
3721 | ||
3722 | /* If the branch writes a register that the previous | |
3723 | instruction reads, we can not swap. */ | |
3724 | prev_gpr_read = gpr_read_mask (&history[0]); | |
3725 | if (gpr_write & prev_gpr_read) | |
3726 | return FALSE; | |
3727 | ||
3728 | /* If one instruction sets a condition code and the | |
3729 | other one uses a condition code, we can not swap. */ | |
3730 | pinfo = ip->insn_mo->pinfo; | |
3731 | if ((pinfo & INSN_READ_COND_CODE) | |
3732 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
3733 | return FALSE; | |
3734 | if ((pinfo & INSN_WRITE_COND_CODE) | |
3735 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
3736 | return FALSE; | |
3737 | ||
3738 | /* If the previous instruction uses the PC, we can not swap. */ | |
3739 | if (mips_opts.mips16 && (prev_pinfo & MIPS16_INSN_READ_PC)) | |
3740 | return FALSE; | |
3741 | ||
df58fc94 RS |
3742 | /* If the previous instruction has an incorrect size for a fixed |
3743 | branch delay slot in microMIPS mode, we cannot swap. */ | |
2309ddf2 MR |
3744 | pinfo2 = ip->insn_mo->pinfo2; |
3745 | if (mips_opts.micromips | |
3746 | && (pinfo2 & INSN2_BRANCH_DELAY_16BIT) | |
3747 | && insn_length (history) != 2) | |
3748 | return FALSE; | |
3749 | if (mips_opts.micromips | |
3750 | && (pinfo2 & INSN2_BRANCH_DELAY_32BIT) | |
3751 | && insn_length (history) != 4) | |
3752 | return FALSE; | |
3753 | ||
a4e06468 RS |
3754 | return TRUE; |
3755 | } | |
3756 | ||
3757 | /* Decide how we should add IP to the instruction stream. */ | |
3758 | ||
3759 | static enum append_method | |
3760 | get_append_method (struct mips_cl_insn *ip) | |
3761 | { | |
3762 | unsigned long pinfo; | |
3763 | ||
3764 | /* The relaxed version of a macro sequence must be inherently | |
3765 | hazard-free. */ | |
3766 | if (mips_relax.sequence == 2) | |
3767 | return APPEND_ADD; | |
3768 | ||
3769 | /* We must not dabble with instructions in a ".set norerorder" block. */ | |
3770 | if (mips_opts.noreorder) | |
3771 | return APPEND_ADD; | |
3772 | ||
3773 | /* Otherwise, it's our responsibility to fill branch delay slots. */ | |
3774 | pinfo = ip->insn_mo->pinfo; | |
3775 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) | |
3776 | || (pinfo & INSN_COND_BRANCH_DELAY)) | |
3777 | { | |
3778 | if (can_swap_branch_p (ip)) | |
3779 | return APPEND_SWAP; | |
3780 | ||
3781 | if (mips_opts.mips16 | |
3782 | && ISA_SUPPORTS_MIPS16E | |
3783 | && (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
3784 | && (pinfo & (MIPS16_INSN_READ_X | MIPS16_INSN_READ_31))) | |
3785 | return APPEND_ADD_COMPACT; | |
3786 | ||
3787 | return APPEND_ADD_WITH_NOP; | |
3788 | } | |
3789 | ||
3790 | /* We don't bother trying to track the target of branches, so there's | |
3791 | nothing we can use to fill a branch-likely slot. */ | |
3792 | if (pinfo & INSN_COND_BRANCH_LIKELY) | |
3793 | return APPEND_ADD_WITH_NOP; | |
3794 | ||
3795 | return APPEND_ADD; | |
3796 | } | |
3797 | ||
ceb94aa5 RS |
3798 | /* IP is a MIPS16 instruction whose opcode we have just changed. |
3799 | Point IP->insn_mo to the new opcode's definition. */ | |
3800 | ||
3801 | static void | |
3802 | find_altered_mips16_opcode (struct mips_cl_insn *ip) | |
3803 | { | |
3804 | const struct mips_opcode *mo, *end; | |
3805 | ||
3806 | end = &mips16_opcodes[bfd_mips16_num_opcodes]; | |
3807 | for (mo = ip->insn_mo; mo < end; mo++) | |
3808 | if ((ip->insn_opcode & mo->mask) == mo->match) | |
3809 | { | |
3810 | ip->insn_mo = mo; | |
3811 | return; | |
3812 | } | |
3813 | abort (); | |
3814 | } | |
3815 | ||
df58fc94 RS |
3816 | /* For microMIPS macros, we need to generate a local number label |
3817 | as the target of branches. */ | |
3818 | #define MICROMIPS_LABEL_CHAR '\037' | |
3819 | static unsigned long micromips_target_label; | |
3820 | static char micromips_target_name[32]; | |
3821 | ||
3822 | static char * | |
3823 | micromips_label_name (void) | |
3824 | { | |
3825 | char *p = micromips_target_name; | |
3826 | char symbol_name_temporary[24]; | |
3827 | unsigned long l; | |
3828 | int i; | |
3829 | ||
3830 | if (*p) | |
3831 | return p; | |
3832 | ||
3833 | i = 0; | |
3834 | l = micromips_target_label; | |
3835 | #ifdef LOCAL_LABEL_PREFIX | |
3836 | *p++ = LOCAL_LABEL_PREFIX; | |
3837 | #endif | |
3838 | *p++ = 'L'; | |
3839 | *p++ = MICROMIPS_LABEL_CHAR; | |
3840 | do | |
3841 | { | |
3842 | symbol_name_temporary[i++] = l % 10 + '0'; | |
3843 | l /= 10; | |
3844 | } | |
3845 | while (l != 0); | |
3846 | while (i > 0) | |
3847 | *p++ = symbol_name_temporary[--i]; | |
3848 | *p = '\0'; | |
3849 | ||
3850 | return micromips_target_name; | |
3851 | } | |
3852 | ||
3853 | static void | |
3854 | micromips_label_expr (expressionS *label_expr) | |
3855 | { | |
3856 | label_expr->X_op = O_symbol; | |
3857 | label_expr->X_add_symbol = symbol_find_or_make (micromips_label_name ()); | |
3858 | label_expr->X_add_number = 0; | |
3859 | } | |
3860 | ||
3861 | static void | |
3862 | micromips_label_inc (void) | |
3863 | { | |
3864 | micromips_target_label++; | |
3865 | *micromips_target_name = '\0'; | |
3866 | } | |
3867 | ||
3868 | static void | |
3869 | micromips_add_label (void) | |
3870 | { | |
3871 | symbolS *s; | |
3872 | ||
3873 | s = colon (micromips_label_name ()); | |
3874 | micromips_label_inc (); | |
3875 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
3876 | if (IS_ELF) | |
3877 | S_SET_OTHER (s, ELF_ST_SET_MICROMIPS (S_GET_OTHER (s))); | |
3878 | #endif | |
3879 | } | |
3880 | ||
3881 | /* If assembling microMIPS code, then return the microMIPS reloc | |
3882 | corresponding to the requested one if any. Otherwise return | |
3883 | the reloc unchanged. */ | |
3884 | ||
3885 | static bfd_reloc_code_real_type | |
3886 | micromips_map_reloc (bfd_reloc_code_real_type reloc) | |
3887 | { | |
3888 | static const bfd_reloc_code_real_type relocs[][2] = | |
3889 | { | |
3890 | /* Keep sorted incrementally by the left-hand key. */ | |
3891 | { BFD_RELOC_16_PCREL_S2, BFD_RELOC_MICROMIPS_16_PCREL_S1 }, | |
3892 | { BFD_RELOC_GPREL16, BFD_RELOC_MICROMIPS_GPREL16 }, | |
3893 | { BFD_RELOC_MIPS_JMP, BFD_RELOC_MICROMIPS_JMP }, | |
3894 | { BFD_RELOC_HI16, BFD_RELOC_MICROMIPS_HI16 }, | |
3895 | { BFD_RELOC_HI16_S, BFD_RELOC_MICROMIPS_HI16_S }, | |
3896 | { BFD_RELOC_LO16, BFD_RELOC_MICROMIPS_LO16 }, | |
3897 | { BFD_RELOC_MIPS_LITERAL, BFD_RELOC_MICROMIPS_LITERAL }, | |
3898 | { BFD_RELOC_MIPS_GOT16, BFD_RELOC_MICROMIPS_GOT16 }, | |
3899 | { BFD_RELOC_MIPS_CALL16, BFD_RELOC_MICROMIPS_CALL16 }, | |
3900 | { BFD_RELOC_MIPS_GOT_HI16, BFD_RELOC_MICROMIPS_GOT_HI16 }, | |
3901 | { BFD_RELOC_MIPS_GOT_LO16, BFD_RELOC_MICROMIPS_GOT_LO16 }, | |
3902 | { BFD_RELOC_MIPS_CALL_HI16, BFD_RELOC_MICROMIPS_CALL_HI16 }, | |
3903 | { BFD_RELOC_MIPS_CALL_LO16, BFD_RELOC_MICROMIPS_CALL_LO16 }, | |
3904 | { BFD_RELOC_MIPS_SUB, BFD_RELOC_MICROMIPS_SUB }, | |
3905 | { BFD_RELOC_MIPS_GOT_PAGE, BFD_RELOC_MICROMIPS_GOT_PAGE }, | |
3906 | { BFD_RELOC_MIPS_GOT_OFST, BFD_RELOC_MICROMIPS_GOT_OFST }, | |
3907 | { BFD_RELOC_MIPS_GOT_DISP, BFD_RELOC_MICROMIPS_GOT_DISP }, | |
3908 | { BFD_RELOC_MIPS_HIGHEST, BFD_RELOC_MICROMIPS_HIGHEST }, | |
3909 | { BFD_RELOC_MIPS_HIGHER, BFD_RELOC_MICROMIPS_HIGHER }, | |
3910 | { BFD_RELOC_MIPS_SCN_DISP, BFD_RELOC_MICROMIPS_SCN_DISP }, | |
3911 | { BFD_RELOC_MIPS_TLS_GD, BFD_RELOC_MICROMIPS_TLS_GD }, | |
3912 | { BFD_RELOC_MIPS_TLS_LDM, BFD_RELOC_MICROMIPS_TLS_LDM }, | |
3913 | { BFD_RELOC_MIPS_TLS_DTPREL_HI16, BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16 }, | |
3914 | { BFD_RELOC_MIPS_TLS_DTPREL_LO16, BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16 }, | |
3915 | { BFD_RELOC_MIPS_TLS_GOTTPREL, BFD_RELOC_MICROMIPS_TLS_GOTTPREL }, | |
3916 | { BFD_RELOC_MIPS_TLS_TPREL_HI16, BFD_RELOC_MICROMIPS_TLS_TPREL_HI16 }, | |
3917 | { BFD_RELOC_MIPS_TLS_TPREL_LO16, BFD_RELOC_MICROMIPS_TLS_TPREL_LO16 } | |
3918 | }; | |
3919 | bfd_reloc_code_real_type r; | |
3920 | size_t i; | |
3921 | ||
3922 | if (!mips_opts.micromips) | |
3923 | return reloc; | |
3924 | for (i = 0; i < ARRAY_SIZE (relocs); i++) | |
3925 | { | |
3926 | r = relocs[i][0]; | |
3927 | if (r > reloc) | |
3928 | return reloc; | |
3929 | if (r == reloc) | |
3930 | return relocs[i][1]; | |
3931 | } | |
3932 | return reloc; | |
3933 | } | |
3934 | ||
71400594 RS |
3935 | /* Output an instruction. IP is the instruction information. |
3936 | ADDRESS_EXPR is an operand of the instruction to be used with | |
df58fc94 RS |
3937 | RELOC_TYPE. EXPANSIONP is true if the instruction is part of |
3938 | a macro expansion. */ | |
71400594 RS |
3939 | |
3940 | static void | |
3941 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
df58fc94 | 3942 | bfd_reloc_code_real_type *reloc_type, bfd_boolean expansionp) |
71400594 | 3943 | { |
df58fc94 | 3944 | unsigned long prev_pinfo, prev_pinfo2, pinfo, pinfo2; |
71400594 | 3945 | bfd_boolean relaxed_branch = FALSE; |
a4e06468 | 3946 | enum append_method method; |
2309ddf2 | 3947 | bfd_boolean relax32; |
71400594 | 3948 | |
2309ddf2 | 3949 | if (mips_fix_loongson2f && !HAVE_CODE_COMPRESSION) |
c67a084a NC |
3950 | fix_loongson2f (ip); |
3951 | ||
df58fc94 | 3952 | mips_mark_labels (); |
71400594 | 3953 | |
738f4d98 | 3954 | file_ase_mips16 |= mips_opts.mips16; |
df58fc94 | 3955 | file_ase_micromips |= mips_opts.micromips; |
738f4d98 | 3956 | |
71400594 | 3957 | prev_pinfo = history[0].insn_mo->pinfo; |
df58fc94 | 3958 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
71400594 | 3959 | pinfo = ip->insn_mo->pinfo; |
df58fc94 RS |
3960 | pinfo2 = ip->insn_mo->pinfo2; |
3961 | ||
3962 | if (mips_opts.micromips | |
3963 | && !expansionp | |
3964 | && (((prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
3965 | && micromips_insn_length (ip->insn_mo) != 2) | |
3966 | || ((prev_pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 | |
3967 | && micromips_insn_length (ip->insn_mo) != 4))) | |
3968 | as_warn (_("Wrong size instruction in a %u-bit branch delay slot"), | |
3969 | (prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 ? 16 : 32); | |
71400594 | 3970 | |
15be625d CM |
3971 | if (address_expr == NULL) |
3972 | ip->complete_p = 1; | |
3973 | else if (*reloc_type <= BFD_RELOC_UNUSED | |
3974 | && address_expr->X_op == O_constant) | |
3975 | { | |
3976 | unsigned int tmp; | |
3977 | ||
3978 | ip->complete_p = 1; | |
3979 | switch (*reloc_type) | |
3980 | { | |
3981 | case BFD_RELOC_32: | |
3982 | ip->insn_opcode |= address_expr->X_add_number; | |
3983 | break; | |
3984 | ||
3985 | case BFD_RELOC_MIPS_HIGHEST: | |
3986 | tmp = (address_expr->X_add_number + 0x800080008000ull) >> 48; | |
3987 | ip->insn_opcode |= tmp & 0xffff; | |
3988 | break; | |
3989 | ||
3990 | case BFD_RELOC_MIPS_HIGHER: | |
3991 | tmp = (address_expr->X_add_number + 0x80008000ull) >> 32; | |
3992 | ip->insn_opcode |= tmp & 0xffff; | |
3993 | break; | |
3994 | ||
3995 | case BFD_RELOC_HI16_S: | |
3996 | tmp = (address_expr->X_add_number + 0x8000) >> 16; | |
3997 | ip->insn_opcode |= tmp & 0xffff; | |
3998 | break; | |
3999 | ||
4000 | case BFD_RELOC_HI16: | |
4001 | ip->insn_opcode |= (address_expr->X_add_number >> 16) & 0xffff; | |
4002 | break; | |
4003 | ||
4004 | case BFD_RELOC_UNUSED: | |
4005 | case BFD_RELOC_LO16: | |
4006 | case BFD_RELOC_MIPS_GOT_DISP: | |
4007 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; | |
4008 | break; | |
4009 | ||
4010 | case BFD_RELOC_MIPS_JMP: | |
df58fc94 RS |
4011 | { |
4012 | int shift; | |
4013 | ||
4014 | shift = mips_opts.micromips ? 1 : 2; | |
4015 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
4016 | as_bad (_("jump to misaligned address (0x%lx)"), | |
4017 | (unsigned long) address_expr->X_add_number); | |
4018 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
4019 | & 0x3ffffff); | |
4020 | ip->complete_p = 0; | |
4021 | } | |
15be625d CM |
4022 | break; |
4023 | ||
4024 | case BFD_RELOC_MIPS16_JMP: | |
4025 | if ((address_expr->X_add_number & 3) != 0) | |
4026 | as_bad (_("jump to misaligned address (0x%lx)"), | |
4027 | (unsigned long) address_expr->X_add_number); | |
4028 | ip->insn_opcode |= | |
4029 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
4030 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
4031 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
4032 | ip->complete_p = 0; | |
4033 | break; | |
4034 | ||
4035 | case BFD_RELOC_16_PCREL_S2: | |
df58fc94 RS |
4036 | { |
4037 | int shift; | |
4038 | ||
4039 | shift = mips_opts.micromips ? 1 : 2; | |
4040 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
4041 | as_bad (_("branch to misaligned address (0x%lx)"), | |
4042 | (unsigned long) address_expr->X_add_number); | |
4043 | if (!mips_relax_branch) | |
4044 | { | |
4045 | if ((address_expr->X_add_number + (1 << (shift + 15))) | |
4046 | & ~((1 << (shift + 16)) - 1)) | |
4047 | as_bad (_("branch address range overflow (0x%lx)"), | |
4048 | (unsigned long) address_expr->X_add_number); | |
4049 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
4050 | & 0xffff); | |
4051 | } | |
4052 | ip->complete_p = 0; | |
4053 | } | |
15be625d CM |
4054 | break; |
4055 | ||
4056 | default: | |
4057 | internalError (); | |
4058 | } | |
4059 | } | |
4060 | ||
71400594 RS |
4061 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
4062 | { | |
4063 | /* There are a lot of optimizations we could do that we don't. | |
4064 | In particular, we do not, in general, reorder instructions. | |
4065 | If you use gcc with optimization, it will reorder | |
4066 | instructions and generally do much more optimization then we | |
4067 | do here; repeating all that work in the assembler would only | |
4068 | benefit hand written assembly code, and does not seem worth | |
4069 | it. */ | |
4070 | int nops = (mips_optimize == 0 | |
932d1a1b RS |
4071 | ? nops_for_insn (0, history, NULL) |
4072 | : nops_for_insn_or_target (0, history, ip)); | |
71400594 | 4073 | if (nops > 0) |
252b5132 RH |
4074 | { |
4075 | fragS *old_frag; | |
4076 | unsigned long old_frag_offset; | |
4077 | int i; | |
252b5132 RH |
4078 | |
4079 | old_frag = frag_now; | |
4080 | old_frag_offset = frag_now_fix (); | |
4081 | ||
4082 | for (i = 0; i < nops; i++) | |
4083 | emit_nop (); | |
4084 | ||
4085 | if (listing) | |
4086 | { | |
4087 | listing_prev_line (); | |
4088 | /* We may be at the start of a variant frag. In case we | |
4089 | are, make sure there is enough space for the frag | |
4090 | after the frags created by listing_prev_line. The | |
4091 | argument to frag_grow here must be at least as large | |
4092 | as the argument to all other calls to frag_grow in | |
4093 | this file. We don't have to worry about being in the | |
4094 | middle of a variant frag, because the variants insert | |
4095 | all needed nop instructions themselves. */ | |
4096 | frag_grow (40); | |
4097 | } | |
4098 | ||
404a8071 | 4099 | mips_move_labels (); |
252b5132 RH |
4100 | |
4101 | #ifndef NO_ECOFF_DEBUGGING | |
4102 | if (ECOFF_DEBUGGING) | |
4103 | ecoff_fix_loc (old_frag, old_frag_offset); | |
4104 | #endif | |
4105 | } | |
71400594 RS |
4106 | } |
4107 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
4108 | { | |
932d1a1b RS |
4109 | int nops; |
4110 | ||
4111 | /* Work out how many nops in prev_nop_frag are needed by IP, | |
4112 | ignoring hazards generated by the first prev_nop_frag_since | |
4113 | instructions. */ | |
4114 | nops = nops_for_insn_or_target (prev_nop_frag_since, history, ip); | |
9c2799c2 | 4115 | gas_assert (nops <= prev_nop_frag_holds); |
252b5132 | 4116 | |
71400594 RS |
4117 | /* Enforce NOPS as a minimum. */ |
4118 | if (nops > prev_nop_frag_required) | |
4119 | prev_nop_frag_required = nops; | |
252b5132 | 4120 | |
71400594 RS |
4121 | if (prev_nop_frag_holds == prev_nop_frag_required) |
4122 | { | |
4123 | /* Settle for the current number of nops. Update the history | |
4124 | accordingly (for the benefit of any future .set reorder code). */ | |
4125 | prev_nop_frag = NULL; | |
4126 | insert_into_history (prev_nop_frag_since, | |
4127 | prev_nop_frag_holds, NOP_INSN); | |
4128 | } | |
4129 | else | |
4130 | { | |
4131 | /* Allow this instruction to replace one of the nops that was | |
4132 | tentatively added to prev_nop_frag. */ | |
df58fc94 | 4133 | prev_nop_frag->fr_fix -= NOP_INSN_SIZE; |
71400594 RS |
4134 | prev_nop_frag_holds--; |
4135 | prev_nop_frag_since++; | |
252b5132 RH |
4136 | } |
4137 | } | |
4138 | ||
a4e06468 RS |
4139 | method = get_append_method (ip); |
4140 | ||
58e2ea4d MR |
4141 | #ifdef OBJ_ELF |
4142 | /* The value passed to dwarf2_emit_insn is the distance between | |
4143 | the beginning of the current instruction and the address that | |
e3a82c8e MR |
4144 | should be recorded in the debug tables. This is normally the |
4145 | current address. | |
4146 | ||
df58fc94 RS |
4147 | For MIPS16/microMIPS debug info we want to use ISA-encoded |
4148 | addresses, so we use -1 for an address higher by one than the | |
4149 | current one. | |
e3a82c8e MR |
4150 | |
4151 | If the instruction produced is a branch that we will swap with | |
4152 | the preceding instruction, then we add the displacement by which | |
4153 | the branch will be moved backwards. This is more appropriate | |
2309ddf2 MR |
4154 | and for MIPS16/microMIPS code also prevents a debugger from |
4155 | placing a breakpoint in the middle of the branch (and corrupting | |
4156 | code if software breakpoints are used). */ | |
df58fc94 | 4157 | dwarf2_emit_insn ((HAVE_CODE_COMPRESSION ? -1 : 0) |
e3a82c8e | 4158 | + (method == APPEND_SWAP ? insn_length (history) : 0)); |
58e2ea4d MR |
4159 | #endif |
4160 | ||
df58fc94 RS |
4161 | relax32 = (mips_relax_branch |
4162 | /* Don't try branch relaxation within .set nomacro, or within | |
4163 | .set noat if we use $at for PIC computations. If it turns | |
4164 | out that the branch was out-of-range, we'll get an error. */ | |
4165 | && !mips_opts.warn_about_macros | |
4166 | && (mips_opts.at || mips_pic == NO_PIC) | |
4167 | /* Don't relax BPOSGE32/64 as they have no complementing | |
4168 | branches. */ | |
4169 | && !(ip->insn_mo->membership & (INSN_DSP64 | INSN_DSP)) | |
4170 | /* Don't try 32-bit branch relaxation when users specify | |
4171 | 16-bit/32-bit instructions. */ | |
4172 | && !forced_insn_length); | |
4173 | ||
4174 | if (!HAVE_CODE_COMPRESSION | |
4175 | && address_expr | |
4176 | && relax32 | |
0b25d3e6 | 4177 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
4a6a3df4 | 4178 | && (pinfo & INSN_UNCOND_BRANCH_DELAY || pinfo & INSN_COND_BRANCH_DELAY |
df58fc94 | 4179 | || pinfo & INSN_COND_BRANCH_LIKELY)) |
4a6a3df4 | 4180 | { |
895921c9 | 4181 | relaxed_branch = TRUE; |
1e915849 RS |
4182 | add_relaxed_insn (ip, (relaxed_branch_length |
4183 | (NULL, NULL, | |
4184 | (pinfo & INSN_UNCOND_BRANCH_DELAY) ? -1 | |
4185 | : (pinfo & INSN_COND_BRANCH_LIKELY) ? 1 | |
4186 | : 0)), 4, | |
4187 | RELAX_BRANCH_ENCODE | |
66b3e8da MR |
4188 | (AT, |
4189 | pinfo & INSN_UNCOND_BRANCH_DELAY, | |
1e915849 RS |
4190 | pinfo & INSN_COND_BRANCH_LIKELY, |
4191 | pinfo & INSN_WRITE_GPR_31, | |
4192 | 0), | |
4193 | address_expr->X_add_symbol, | |
4194 | address_expr->X_add_number); | |
4a6a3df4 AO |
4195 | *reloc_type = BFD_RELOC_UNUSED; |
4196 | } | |
df58fc94 RS |
4197 | else if (mips_opts.micromips |
4198 | && address_expr | |
4199 | && ((relax32 && *reloc_type == BFD_RELOC_16_PCREL_S2) | |
4200 | || *reloc_type > BFD_RELOC_UNUSED) | |
4201 | && (pinfo & INSN_UNCOND_BRANCH_DELAY | |
4202 | || pinfo & INSN_COND_BRANCH_DELAY | |
4203 | || (pinfo2 & ~INSN2_ALIAS) == INSN2_UNCOND_BRANCH | |
4204 | || pinfo2 & INSN2_COND_BRANCH)) | |
4205 | { | |
4206 | bfd_boolean relax16 = *reloc_type > BFD_RELOC_UNUSED; | |
4207 | int type = relax16 ? *reloc_type - BFD_RELOC_UNUSED : 0; | |
4208 | int uncond = (pinfo & INSN_UNCOND_BRANCH_DELAY | |
4209 | || pinfo2 & INSN2_UNCOND_BRANCH) ? -1 : 0; | |
4210 | int compact = pinfo2 & (INSN2_COND_BRANCH | INSN2_UNCOND_BRANCH); | |
4211 | int al = pinfo & INSN_WRITE_GPR_31; | |
4212 | int length32; | |
4213 | ||
4214 | gas_assert (address_expr != NULL); | |
4215 | gas_assert (!mips_relax.sequence); | |
4216 | ||
4217 | length32 = relaxed_micromips_32bit_branch_length (NULL, NULL, uncond); | |
4218 | add_relaxed_insn (ip, relax32 ? length32 : 4, relax16 ? 2 : 4, | |
4219 | RELAX_MICROMIPS_ENCODE (type, AT, | |
4220 | forced_insn_length == 2, | |
4221 | uncond, compact, al, relax32, | |
4222 | 0, 0), | |
4223 | address_expr->X_add_symbol, | |
4224 | address_expr->X_add_number); | |
4225 | *reloc_type = BFD_RELOC_UNUSED; | |
4226 | } | |
4227 | else if (mips_opts.mips16 && *reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
4228 | { |
4229 | /* We need to set up a variant frag. */ | |
df58fc94 | 4230 | gas_assert (address_expr != NULL); |
1e915849 RS |
4231 | add_relaxed_insn (ip, 4, 0, |
4232 | RELAX_MIPS16_ENCODE | |
4233 | (*reloc_type - BFD_RELOC_UNUSED, | |
df58fc94 | 4234 | forced_insn_length == 2, forced_insn_length == 4, |
1e915849 RS |
4235 | prev_pinfo & INSN_UNCOND_BRANCH_DELAY, |
4236 | history[0].mips16_absolute_jump_p), | |
4237 | make_expr_symbol (address_expr), 0); | |
252b5132 | 4238 | } |
252b5132 RH |
4239 | else if (mips_opts.mips16 |
4240 | && ! ip->use_extend | |
f6688943 | 4241 | && *reloc_type != BFD_RELOC_MIPS16_JMP) |
9497f5ac | 4242 | { |
b8ee1a6e DU |
4243 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) == 0) |
4244 | /* Make sure there is enough room to swap this instruction with | |
4245 | a following jump instruction. */ | |
4246 | frag_grow (6); | |
1e915849 | 4247 | add_fixed_insn (ip); |
252b5132 RH |
4248 | } |
4249 | else | |
4250 | { | |
4251 | if (mips_opts.mips16 | |
4252 | && mips_opts.noreorder | |
4253 | && (prev_pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) | |
4254 | as_warn (_("extended instruction in delay slot")); | |
4255 | ||
4d7206a2 RS |
4256 | if (mips_relax.sequence) |
4257 | { | |
4258 | /* If we've reached the end of this frag, turn it into a variant | |
4259 | frag and record the information for the instructions we've | |
4260 | written so far. */ | |
4261 | if (frag_room () < 4) | |
4262 | relax_close_frag (); | |
df58fc94 | 4263 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (ip); |
4d7206a2 RS |
4264 | } |
4265 | ||
584892a6 | 4266 | if (mips_relax.sequence != 2) |
df58fc94 RS |
4267 | { |
4268 | if (mips_macro_warning.first_insn_sizes[0] == 0) | |
4269 | mips_macro_warning.first_insn_sizes[0] = insn_length (ip); | |
4270 | mips_macro_warning.sizes[0] += insn_length (ip); | |
4271 | mips_macro_warning.insns[0]++; | |
4272 | } | |
584892a6 | 4273 | if (mips_relax.sequence != 1) |
df58fc94 RS |
4274 | { |
4275 | if (mips_macro_warning.first_insn_sizes[1] == 0) | |
4276 | mips_macro_warning.first_insn_sizes[1] = insn_length (ip); | |
4277 | mips_macro_warning.sizes[1] += insn_length (ip); | |
4278 | mips_macro_warning.insns[1]++; | |
4279 | } | |
584892a6 | 4280 | |
1e915849 RS |
4281 | if (mips_opts.mips16) |
4282 | { | |
4283 | ip->fixed_p = 1; | |
4284 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
4285 | } | |
4286 | add_fixed_insn (ip); | |
252b5132 RH |
4287 | } |
4288 | ||
9fe77896 | 4289 | if (!ip->complete_p && *reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 4290 | { |
df58fc94 | 4291 | bfd_reloc_code_real_type final_type[3]; |
2309ddf2 | 4292 | reloc_howto_type *howto0; |
9fe77896 RS |
4293 | reloc_howto_type *howto; |
4294 | int i; | |
34ce925e | 4295 | |
df58fc94 RS |
4296 | /* Perform any necessary conversion to microMIPS relocations |
4297 | and find out how many relocations there actually are. */ | |
4298 | for (i = 0; i < 3 && reloc_type[i] != BFD_RELOC_UNUSED; i++) | |
4299 | final_type[i] = micromips_map_reloc (reloc_type[i]); | |
4300 | ||
9fe77896 RS |
4301 | /* In a compound relocation, it is the final (outermost) |
4302 | operator that determines the relocated field. */ | |
2309ddf2 MR |
4303 | howto = howto0 = bfd_reloc_type_lookup (stdoutput, final_type[i - 1]); |
4304 | ||
9fe77896 RS |
4305 | if (howto == NULL) |
4306 | { | |
4307 | /* To reproduce this failure try assembling gas/testsuites/ | |
4308 | gas/mips/mips16-intermix.s with a mips-ecoff targeted | |
4309 | assembler. */ | |
df58fc94 RS |
4310 | as_bad (_("Unsupported MIPS relocation number %d"), |
4311 | final_type[i - 1]); | |
9fe77896 RS |
4312 | howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_16); |
4313 | } | |
2309ddf2 MR |
4314 | |
4315 | if (i > 1) | |
4316 | howto0 = bfd_reloc_type_lookup (stdoutput, final_type[0]); | |
9fe77896 RS |
4317 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
4318 | bfd_get_reloc_size (howto), | |
4319 | address_expr, | |
2309ddf2 MR |
4320 | howto0 && howto0->pc_relative, |
4321 | final_type[0]); | |
9fe77896 RS |
4322 | |
4323 | /* Tag symbols that have a R_MIPS16_26 relocation against them. */ | |
2309ddf2 | 4324 | if (final_type[0] == BFD_RELOC_MIPS16_JMP && ip->fixp[0]->fx_addsy) |
9fe77896 RS |
4325 | *symbol_get_tc (ip->fixp[0]->fx_addsy) = 1; |
4326 | ||
4327 | /* These relocations can have an addend that won't fit in | |
4328 | 4 octets for 64bit assembly. */ | |
4329 | if (HAVE_64BIT_GPRS | |
4330 | && ! howto->partial_inplace | |
4331 | && (reloc_type[0] == BFD_RELOC_16 | |
4332 | || reloc_type[0] == BFD_RELOC_32 | |
4333 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
4334 | || reloc_type[0] == BFD_RELOC_GPREL16 | |
4335 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
4336 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
4337 | || reloc_type[0] == BFD_RELOC_64 | |
4338 | || reloc_type[0] == BFD_RELOC_CTOR | |
4339 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
4340 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
4341 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
4342 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
4343 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
4344 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT | |
4345 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
4346 | || hi16_reloc_p (reloc_type[0]) | |
4347 | || lo16_reloc_p (reloc_type[0]))) | |
4348 | ip->fixp[0]->fx_no_overflow = 1; | |
4349 | ||
4350 | if (mips_relax.sequence) | |
4351 | { | |
4352 | if (mips_relax.first_fixup == 0) | |
4353 | mips_relax.first_fixup = ip->fixp[0]; | |
4354 | } | |
4355 | else if (reloc_needs_lo_p (*reloc_type)) | |
4356 | { | |
4357 | struct mips_hi_fixup *hi_fixup; | |
4358 | ||
4359 | /* Reuse the last entry if it already has a matching %lo. */ | |
4360 | hi_fixup = mips_hi_fixup_list; | |
4361 | if (hi_fixup == 0 | |
4362 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
4d7206a2 | 4363 | { |
9fe77896 RS |
4364 | hi_fixup = ((struct mips_hi_fixup *) |
4365 | xmalloc (sizeof (struct mips_hi_fixup))); | |
4366 | hi_fixup->next = mips_hi_fixup_list; | |
4367 | mips_hi_fixup_list = hi_fixup; | |
4d7206a2 | 4368 | } |
9fe77896 RS |
4369 | hi_fixup->fixp = ip->fixp[0]; |
4370 | hi_fixup->seg = now_seg; | |
4371 | } | |
252b5132 | 4372 | |
9fe77896 RS |
4373 | /* Add fixups for the second and third relocations, if given. |
4374 | Note that the ABI allows the second relocation to be | |
4375 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
4376 | moment we only use RSS_UNDEF, but we could add support | |
4377 | for the others if it ever becomes necessary. */ | |
4378 | for (i = 1; i < 3; i++) | |
4379 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
4380 | { | |
4381 | ip->fixp[i] = fix_new (ip->frag, ip->where, | |
4382 | ip->fixp[0]->fx_size, NULL, 0, | |
df58fc94 | 4383 | FALSE, final_type[i]); |
f6688943 | 4384 | |
9fe77896 RS |
4385 | /* Use fx_tcbit to mark compound relocs. */ |
4386 | ip->fixp[0]->fx_tcbit = 1; | |
4387 | ip->fixp[i]->fx_tcbit = 1; | |
4388 | } | |
252b5132 | 4389 | } |
1e915849 | 4390 | install_insn (ip); |
252b5132 RH |
4391 | |
4392 | /* Update the register mask information. */ | |
4c260379 RS |
4393 | mips_gprmask |= gpr_read_mask (ip) | gpr_write_mask (ip); |
4394 | mips_cprmask[1] |= fpr_read_mask (ip) | fpr_write_mask (ip); | |
252b5132 | 4395 | |
a4e06468 | 4396 | switch (method) |
252b5132 | 4397 | { |
a4e06468 RS |
4398 | case APPEND_ADD: |
4399 | insert_into_history (0, 1, ip); | |
4400 | break; | |
4401 | ||
4402 | case APPEND_ADD_WITH_NOP: | |
4403 | insert_into_history (0, 1, ip); | |
df58fc94 RS |
4404 | if (mips_opts.micromips |
4405 | && (pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
4406 | { | |
4407 | add_fixed_insn (µmips_nop32_insn); | |
4408 | insert_into_history (0, 1, µmips_nop32_insn); | |
4409 | if (mips_relax.sequence) | |
4410 | mips_relax.sizes[mips_relax.sequence - 1] += 4; | |
4411 | } | |
4412 | else | |
4413 | { | |
4414 | emit_nop (); | |
4415 | if (mips_relax.sequence) | |
4416 | mips_relax.sizes[mips_relax.sequence - 1] += NOP_INSN_SIZE; | |
4417 | } | |
a4e06468 RS |
4418 | break; |
4419 | ||
4420 | case APPEND_ADD_COMPACT: | |
4421 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
4422 | gas_assert (mips_opts.mips16); | |
4423 | ip->insn_opcode |= 0x0080; | |
4424 | find_altered_mips16_opcode (ip); | |
4425 | install_insn (ip); | |
4426 | insert_into_history (0, 1, ip); | |
4427 | break; | |
4428 | ||
4429 | case APPEND_SWAP: | |
4430 | { | |
4431 | struct mips_cl_insn delay = history[0]; | |
4432 | if (mips_opts.mips16) | |
4433 | { | |
4434 | know (delay.frag == ip->frag); | |
4435 | move_insn (ip, delay.frag, delay.where); | |
4436 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
4437 | } | |
df58fc94 RS |
4438 | else if (mips_opts.micromips) |
4439 | { | |
4440 | /* We don't reorder for micromips. */ | |
4441 | abort (); | |
4442 | } | |
a4e06468 RS |
4443 | else if (relaxed_branch) |
4444 | { | |
4445 | /* Add the delay slot instruction to the end of the | |
4446 | current frag and shrink the fixed part of the | |
4447 | original frag. If the branch occupies the tail of | |
4448 | the latter, move it backwards to cover the gap. */ | |
4449 | delay.frag->fr_fix -= 4; | |
4450 | if (delay.frag == ip->frag) | |
4451 | move_insn (ip, ip->frag, ip->where - 4); | |
4452 | add_fixed_insn (&delay); | |
4453 | } | |
4454 | else | |
4455 | { | |
4456 | move_insn (&delay, ip->frag, ip->where); | |
4457 | move_insn (ip, history[0].frag, history[0].where); | |
4458 | } | |
4459 | history[0] = *ip; | |
4460 | delay.fixed_p = 1; | |
4461 | insert_into_history (0, 1, &delay); | |
4462 | } | |
4463 | break; | |
252b5132 RH |
4464 | } |
4465 | ||
13408f1e RS |
4466 | /* If we have just completed an unconditional branch, clear the history. */ |
4467 | if ((history[1].insn_mo->pinfo & INSN_UNCOND_BRANCH_DELAY) | |
4468 | || (mips_opts.mips16 | |
4469 | && (history[0].insn_mo->pinfo & MIPS16_INSN_UNCOND_BRANCH))) | |
4470 | mips_no_prev_insn (); | |
4471 | ||
df58fc94 RS |
4472 | /* We need to emit a label at the end of branch-likely macros. */ |
4473 | if (emit_branch_likely_macro) | |
4474 | { | |
4475 | emit_branch_likely_macro = FALSE; | |
4476 | micromips_add_label (); | |
4477 | } | |
4478 | ||
252b5132 RH |
4479 | /* We just output an insn, so the next one doesn't have a label. */ |
4480 | mips_clear_insn_labels (); | |
252b5132 RH |
4481 | } |
4482 | ||
7d10b47d | 4483 | /* Forget that there was any previous instruction or label. */ |
252b5132 RH |
4484 | |
4485 | static void | |
7d10b47d | 4486 | mips_no_prev_insn (void) |
252b5132 | 4487 | { |
7d10b47d RS |
4488 | prev_nop_frag = NULL; |
4489 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
4490 | mips_clear_insn_labels (); |
4491 | } | |
4492 | ||
7d10b47d RS |
4493 | /* This function must be called before we emit something other than |
4494 | instructions. It is like mips_no_prev_insn except that it inserts | |
4495 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 4496 | |
7d10b47d RS |
4497 | void |
4498 | mips_emit_delays (void) | |
252b5132 RH |
4499 | { |
4500 | if (! mips_opts.noreorder) | |
4501 | { | |
932d1a1b | 4502 | int nops = nops_for_insn (0, history, NULL); |
252b5132 RH |
4503 | if (nops > 0) |
4504 | { | |
7d10b47d RS |
4505 | while (nops-- > 0) |
4506 | add_fixed_insn (NOP_INSN); | |
4507 | mips_move_labels (); | |
4508 | } | |
4509 | } | |
4510 | mips_no_prev_insn (); | |
4511 | } | |
4512 | ||
4513 | /* Start a (possibly nested) noreorder block. */ | |
4514 | ||
4515 | static void | |
4516 | start_noreorder (void) | |
4517 | { | |
4518 | if (mips_opts.noreorder == 0) | |
4519 | { | |
4520 | unsigned int i; | |
4521 | int nops; | |
4522 | ||
4523 | /* None of the instructions before the .set noreorder can be moved. */ | |
4524 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
4525 | history[i].fixed_p = 1; | |
4526 | ||
4527 | /* Insert any nops that might be needed between the .set noreorder | |
4528 | block and the previous instructions. We will later remove any | |
4529 | nops that turn out not to be needed. */ | |
932d1a1b | 4530 | nops = nops_for_insn (0, history, NULL); |
7d10b47d RS |
4531 | if (nops > 0) |
4532 | { | |
4533 | if (mips_optimize != 0) | |
252b5132 RH |
4534 | { |
4535 | /* Record the frag which holds the nop instructions, so | |
4536 | that we can remove them if we don't need them. */ | |
df58fc94 | 4537 | frag_grow (nops * NOP_INSN_SIZE); |
252b5132 RH |
4538 | prev_nop_frag = frag_now; |
4539 | prev_nop_frag_holds = nops; | |
4540 | prev_nop_frag_required = 0; | |
4541 | prev_nop_frag_since = 0; | |
4542 | } | |
4543 | ||
4544 | for (; nops > 0; --nops) | |
1e915849 | 4545 | add_fixed_insn (NOP_INSN); |
252b5132 | 4546 | |
7d10b47d RS |
4547 | /* Move on to a new frag, so that it is safe to simply |
4548 | decrease the size of prev_nop_frag. */ | |
4549 | frag_wane (frag_now); | |
4550 | frag_new (0); | |
404a8071 | 4551 | mips_move_labels (); |
252b5132 | 4552 | } |
df58fc94 | 4553 | mips_mark_labels (); |
7d10b47d | 4554 | mips_clear_insn_labels (); |
252b5132 | 4555 | } |
7d10b47d RS |
4556 | mips_opts.noreorder++; |
4557 | mips_any_noreorder = 1; | |
4558 | } | |
252b5132 | 4559 | |
7d10b47d | 4560 | /* End a nested noreorder block. */ |
252b5132 | 4561 | |
7d10b47d RS |
4562 | static void |
4563 | end_noreorder (void) | |
4564 | { | |
6a32d874 | 4565 | |
7d10b47d RS |
4566 | mips_opts.noreorder--; |
4567 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
4568 | { | |
4569 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
4570 | handling nop insertion the .set reorder way. */ | |
4571 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
df58fc94 | 4572 | * NOP_INSN_SIZE); |
7d10b47d RS |
4573 | insert_into_history (prev_nop_frag_since, |
4574 | prev_nop_frag_required, NOP_INSN); | |
4575 | prev_nop_frag = NULL; | |
4576 | } | |
252b5132 RH |
4577 | } |
4578 | ||
584892a6 RS |
4579 | /* Set up global variables for the start of a new macro. */ |
4580 | ||
4581 | static void | |
4582 | macro_start (void) | |
4583 | { | |
4584 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
df58fc94 RS |
4585 | memset (&mips_macro_warning.first_insn_sizes, 0, |
4586 | sizeof (mips_macro_warning.first_insn_sizes)); | |
4587 | memset (&mips_macro_warning.insns, 0, sizeof (mips_macro_warning.insns)); | |
584892a6 | 4588 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder |
47e39b9d | 4589 | && (history[0].insn_mo->pinfo |
584892a6 RS |
4590 | & (INSN_UNCOND_BRANCH_DELAY |
4591 | | INSN_COND_BRANCH_DELAY | |
4592 | | INSN_COND_BRANCH_LIKELY)) != 0); | |
df58fc94 RS |
4593 | switch (history[0].insn_mo->pinfo2 |
4594 | & (INSN2_BRANCH_DELAY_32BIT | INSN2_BRANCH_DELAY_16BIT)) | |
4595 | { | |
4596 | case INSN2_BRANCH_DELAY_32BIT: | |
4597 | mips_macro_warning.delay_slot_length = 4; | |
4598 | break; | |
4599 | case INSN2_BRANCH_DELAY_16BIT: | |
4600 | mips_macro_warning.delay_slot_length = 2; | |
4601 | break; | |
4602 | default: | |
4603 | mips_macro_warning.delay_slot_length = 0; | |
4604 | break; | |
4605 | } | |
4606 | mips_macro_warning.first_frag = NULL; | |
584892a6 RS |
4607 | } |
4608 | ||
df58fc94 RS |
4609 | /* Given that a macro is longer than one instruction or of the wrong size, |
4610 | return the appropriate warning for it. Return null if no warning is | |
4611 | needed. SUBTYPE is a bitmask of RELAX_DELAY_SLOT, RELAX_DELAY_SLOT_16BIT, | |
4612 | RELAX_DELAY_SLOT_SIZE_FIRST, RELAX_DELAY_SLOT_SIZE_SECOND, | |
4613 | and RELAX_NOMACRO. */ | |
584892a6 RS |
4614 | |
4615 | static const char * | |
4616 | macro_warning (relax_substateT subtype) | |
4617 | { | |
4618 | if (subtype & RELAX_DELAY_SLOT) | |
4619 | return _("Macro instruction expanded into multiple instructions" | |
4620 | " in a branch delay slot"); | |
4621 | else if (subtype & RELAX_NOMACRO) | |
4622 | return _("Macro instruction expanded into multiple instructions"); | |
df58fc94 RS |
4623 | else if (subtype & (RELAX_DELAY_SLOT_SIZE_FIRST |
4624 | | RELAX_DELAY_SLOT_SIZE_SECOND)) | |
4625 | return ((subtype & RELAX_DELAY_SLOT_16BIT) | |
4626 | ? _("Macro instruction expanded into a wrong size instruction" | |
4627 | " in a 16-bit branch delay slot") | |
4628 | : _("Macro instruction expanded into a wrong size instruction" | |
4629 | " in a 32-bit branch delay slot")); | |
584892a6 RS |
4630 | else |
4631 | return 0; | |
4632 | } | |
4633 | ||
4634 | /* Finish up a macro. Emit warnings as appropriate. */ | |
4635 | ||
4636 | static void | |
4637 | macro_end (void) | |
4638 | { | |
df58fc94 RS |
4639 | /* Relaxation warning flags. */ |
4640 | relax_substateT subtype = 0; | |
4641 | ||
4642 | /* Check delay slot size requirements. */ | |
4643 | if (mips_macro_warning.delay_slot_length == 2) | |
4644 | subtype |= RELAX_DELAY_SLOT_16BIT; | |
4645 | if (mips_macro_warning.delay_slot_length != 0) | |
584892a6 | 4646 | { |
df58fc94 RS |
4647 | if (mips_macro_warning.delay_slot_length |
4648 | != mips_macro_warning.first_insn_sizes[0]) | |
4649 | subtype |= RELAX_DELAY_SLOT_SIZE_FIRST; | |
4650 | if (mips_macro_warning.delay_slot_length | |
4651 | != mips_macro_warning.first_insn_sizes[1]) | |
4652 | subtype |= RELAX_DELAY_SLOT_SIZE_SECOND; | |
4653 | } | |
584892a6 | 4654 | |
df58fc94 RS |
4655 | /* Check instruction count requirements. */ |
4656 | if (mips_macro_warning.insns[0] > 1 || mips_macro_warning.insns[1] > 1) | |
4657 | { | |
4658 | if (mips_macro_warning.insns[1] > mips_macro_warning.insns[0]) | |
584892a6 RS |
4659 | subtype |= RELAX_SECOND_LONGER; |
4660 | if (mips_opts.warn_about_macros) | |
4661 | subtype |= RELAX_NOMACRO; | |
4662 | if (mips_macro_warning.delay_slot_p) | |
4663 | subtype |= RELAX_DELAY_SLOT; | |
df58fc94 | 4664 | } |
584892a6 | 4665 | |
df58fc94 RS |
4666 | /* If both alternatives fail to fill a delay slot correctly, |
4667 | emit the warning now. */ | |
4668 | if ((subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0 | |
4669 | && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0) | |
4670 | { | |
4671 | relax_substateT s; | |
4672 | const char *msg; | |
4673 | ||
4674 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
4675 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
4676 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
4677 | msg = macro_warning (s); | |
4678 | if (msg != NULL) | |
4679 | as_warn ("%s", msg); | |
4680 | subtype &= ~s; | |
4681 | } | |
4682 | ||
4683 | /* If both implementations are longer than 1 instruction, then emit the | |
4684 | warning now. */ | |
4685 | if (mips_macro_warning.insns[0] > 1 && mips_macro_warning.insns[1] > 1) | |
4686 | { | |
4687 | relax_substateT s; | |
4688 | const char *msg; | |
4689 | ||
4690 | s = subtype & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT); | |
4691 | msg = macro_warning (s); | |
4692 | if (msg != NULL) | |
4693 | as_warn ("%s", msg); | |
4694 | subtype &= ~s; | |
584892a6 | 4695 | } |
df58fc94 RS |
4696 | |
4697 | /* If any flags still set, then one implementation might need a warning | |
4698 | and the other either will need one of a different kind or none at all. | |
4699 | Pass any remaining flags over to relaxation. */ | |
4700 | if (mips_macro_warning.first_frag != NULL) | |
4701 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
584892a6 RS |
4702 | } |
4703 | ||
df58fc94 RS |
4704 | /* Instruction operand formats used in macros that vary between |
4705 | standard MIPS and microMIPS code. */ | |
4706 | ||
4707 | static const char * const brk_fmt[2] = { "c", "mF" }; | |
4708 | static const char * const cop12_fmt[2] = { "E,o(b)", "E,~(b)" }; | |
4709 | static const char * const jalr_fmt[2] = { "d,s", "t,s" }; | |
4710 | static const char * const lui_fmt[2] = { "t,u", "s,u" }; | |
4711 | static const char * const mem12_fmt[2] = { "t,o(b)", "t,~(b)" }; | |
4712 | static const char * const mfhl_fmt[2] = { "d", "mj" }; | |
4713 | static const char * const shft_fmt[2] = { "d,w,<", "t,r,<" }; | |
4714 | static const char * const trap_fmt[2] = { "s,t,q", "s,t,|" }; | |
4715 | ||
4716 | #define BRK_FMT (brk_fmt[mips_opts.micromips]) | |
4717 | #define COP12_FMT (cop12_fmt[mips_opts.micromips]) | |
4718 | #define JALR_FMT (jalr_fmt[mips_opts.micromips]) | |
4719 | #define LUI_FMT (lui_fmt[mips_opts.micromips]) | |
4720 | #define MEM12_FMT (mem12_fmt[mips_opts.micromips]) | |
4721 | #define MFHL_FMT (mfhl_fmt[mips_opts.micromips]) | |
4722 | #define SHFT_FMT (shft_fmt[mips_opts.micromips]) | |
4723 | #define TRAP_FMT (trap_fmt[mips_opts.micromips]) | |
4724 | ||
6e1304d8 RS |
4725 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
4726 | The first argument in *ARGS will be either the code for a single | |
4727 | relocation or -1 followed by the three codes that make up a | |
4728 | composite relocation. */ | |
4729 | ||
4730 | static void | |
4731 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
4732 | { | |
4733 | int i, next; | |
4734 | ||
4735 | next = va_arg (*args, int); | |
4736 | if (next >= 0) | |
4737 | r[0] = (bfd_reloc_code_real_type) next; | |
4738 | else | |
4739 | for (i = 0; i < 3; i++) | |
4740 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
4741 | } | |
4742 | ||
252b5132 RH |
4743 | /* Build an instruction created by a macro expansion. This is passed |
4744 | a pointer to the count of instructions created so far, an | |
4745 | expression, the name of the instruction to build, an operand format | |
4746 | string, and corresponding arguments. */ | |
4747 | ||
252b5132 | 4748 | static void |
67c0d1eb | 4749 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 4750 | { |
df58fc94 | 4751 | const struct mips_opcode *mo = NULL; |
f6688943 | 4752 | bfd_reloc_code_real_type r[3]; |
df58fc94 RS |
4753 | const struct mips_opcode *amo; |
4754 | struct hash_control *hash; | |
4755 | struct mips_cl_insn insn; | |
252b5132 | 4756 | va_list args; |
252b5132 | 4757 | |
252b5132 | 4758 | va_start (args, fmt); |
252b5132 | 4759 | |
252b5132 RH |
4760 | if (mips_opts.mips16) |
4761 | { | |
03ea81db | 4762 | mips16_macro_build (ep, name, fmt, &args); |
252b5132 RH |
4763 | va_end (args); |
4764 | return; | |
4765 | } | |
4766 | ||
f6688943 TS |
4767 | r[0] = BFD_RELOC_UNUSED; |
4768 | r[1] = BFD_RELOC_UNUSED; | |
4769 | r[2] = BFD_RELOC_UNUSED; | |
df58fc94 RS |
4770 | hash = mips_opts.micromips ? micromips_op_hash : op_hash; |
4771 | amo = (struct mips_opcode *) hash_find (hash, name); | |
4772 | gas_assert (amo); | |
4773 | gas_assert (strcmp (name, amo->name) == 0); | |
1e915849 | 4774 | |
df58fc94 | 4775 | do |
8b082fb1 TS |
4776 | { |
4777 | /* Search until we get a match for NAME. It is assumed here that | |
df58fc94 RS |
4778 | macros will never generate MDMX, MIPS-3D, or MT instructions. |
4779 | We try to match an instruction that fulfils the branch delay | |
4780 | slot instruction length requirement (if any) of the previous | |
4781 | instruction. While doing this we record the first instruction | |
4782 | seen that matches all the other conditions and use it anyway | |
4783 | if the requirement cannot be met; we will issue an appropriate | |
4784 | warning later on. */ | |
4785 | if (strcmp (fmt, amo->args) == 0 | |
4786 | && amo->pinfo != INSN_MACRO | |
4787 | && is_opcode_valid (amo) | |
4788 | && is_size_valid (amo)) | |
4789 | { | |
4790 | if (is_delay_slot_valid (amo)) | |
4791 | { | |
4792 | mo = amo; | |
4793 | break; | |
4794 | } | |
4795 | else if (!mo) | |
4796 | mo = amo; | |
4797 | } | |
8b082fb1 | 4798 | |
df58fc94 RS |
4799 | ++amo; |
4800 | gas_assert (amo->name); | |
252b5132 | 4801 | } |
df58fc94 | 4802 | while (strcmp (name, amo->name) == 0); |
252b5132 | 4803 | |
df58fc94 | 4804 | gas_assert (mo); |
1e915849 | 4805 | create_insn (&insn, mo); |
252b5132 RH |
4806 | for (;;) |
4807 | { | |
4808 | switch (*fmt++) | |
4809 | { | |
4810 | case '\0': | |
4811 | break; | |
4812 | ||
4813 | case ',': | |
4814 | case '(': | |
4815 | case ')': | |
4816 | continue; | |
4817 | ||
5f74bc13 CD |
4818 | case '+': |
4819 | switch (*fmt++) | |
4820 | { | |
4821 | case 'A': | |
4822 | case 'E': | |
df58fc94 RS |
4823 | INSERT_OPERAND (mips_opts.micromips, |
4824 | EXTLSB, insn, va_arg (args, int)); | |
5f74bc13 CD |
4825 | continue; |
4826 | ||
4827 | case 'B': | |
4828 | case 'F': | |
4829 | /* Note that in the macro case, these arguments are already | |
4830 | in MSB form. (When handling the instruction in the | |
4831 | non-macro case, these arguments are sizes from which | |
4832 | MSB values must be calculated.) */ | |
df58fc94 RS |
4833 | INSERT_OPERAND (mips_opts.micromips, |
4834 | INSMSB, insn, va_arg (args, int)); | |
5f74bc13 CD |
4835 | continue; |
4836 | ||
4837 | case 'C': | |
4838 | case 'G': | |
4839 | case 'H': | |
4840 | /* Note that in the macro case, these arguments are already | |
4841 | in MSBD form. (When handling the instruction in the | |
4842 | non-macro case, these arguments are sizes from which | |
4843 | MSBD values must be calculated.) */ | |
df58fc94 RS |
4844 | INSERT_OPERAND (mips_opts.micromips, |
4845 | EXTMSBD, insn, va_arg (args, int)); | |
5f74bc13 CD |
4846 | continue; |
4847 | ||
dd3cbb7e | 4848 | case 'Q': |
df58fc94 RS |
4849 | gas_assert (!mips_opts.micromips); |
4850 | INSERT_OPERAND (0, SEQI, insn, va_arg (args, int)); | |
dd3cbb7e NC |
4851 | continue; |
4852 | ||
5f74bc13 CD |
4853 | default: |
4854 | internalError (); | |
4855 | } | |
4856 | continue; | |
4857 | ||
8b082fb1 | 4858 | case '2': |
df58fc94 RS |
4859 | gas_assert (!mips_opts.micromips); |
4860 | INSERT_OPERAND (0, BP, insn, va_arg (args, int)); | |
8b082fb1 TS |
4861 | continue; |
4862 | ||
df58fc94 RS |
4863 | case 'n': |
4864 | gas_assert (mips_opts.micromips); | |
252b5132 RH |
4865 | case 't': |
4866 | case 'w': | |
4867 | case 'E': | |
df58fc94 | 4868 | INSERT_OPERAND (mips_opts.micromips, RT, insn, va_arg (args, int)); |
252b5132 RH |
4869 | continue; |
4870 | ||
4871 | case 'c': | |
df58fc94 RS |
4872 | gas_assert (!mips_opts.micromips); |
4873 | INSERT_OPERAND (0, CODE, insn, va_arg (args, int)); | |
38487616 TS |
4874 | continue; |
4875 | ||
252b5132 | 4876 | case 'W': |
df58fc94 RS |
4877 | gas_assert (!mips_opts.micromips); |
4878 | case 'T': | |
4879 | INSERT_OPERAND (mips_opts.micromips, FT, insn, va_arg (args, int)); | |
252b5132 RH |
4880 | continue; |
4881 | ||
252b5132 | 4882 | case 'G': |
df58fc94 RS |
4883 | if (mips_opts.micromips) |
4884 | INSERT_OPERAND (1, RS, insn, va_arg (args, int)); | |
4885 | else | |
4886 | INSERT_OPERAND (0, RD, insn, va_arg (args, int)); | |
4887 | continue; | |
4888 | ||
af7ee8bf | 4889 | case 'K': |
df58fc94 RS |
4890 | gas_assert (!mips_opts.micromips); |
4891 | case 'd': | |
4892 | INSERT_OPERAND (mips_opts.micromips, RD, insn, va_arg (args, int)); | |
252b5132 RH |
4893 | continue; |
4894 | ||
4372b673 | 4895 | case 'U': |
df58fc94 | 4896 | gas_assert (!mips_opts.micromips); |
4372b673 NC |
4897 | { |
4898 | int tmp = va_arg (args, int); | |
4899 | ||
df58fc94 RS |
4900 | INSERT_OPERAND (0, RT, insn, tmp); |
4901 | INSERT_OPERAND (0, RD, insn, tmp); | |
4372b673 | 4902 | } |
df58fc94 | 4903 | continue; |
4372b673 | 4904 | |
252b5132 RH |
4905 | case 'V': |
4906 | case 'S': | |
df58fc94 RS |
4907 | gas_assert (!mips_opts.micromips); |
4908 | INSERT_OPERAND (0, FS, insn, va_arg (args, int)); | |
252b5132 RH |
4909 | continue; |
4910 | ||
4911 | case 'z': | |
4912 | continue; | |
4913 | ||
4914 | case '<': | |
df58fc94 RS |
4915 | INSERT_OPERAND (mips_opts.micromips, |
4916 | SHAMT, insn, va_arg (args, int)); | |
252b5132 RH |
4917 | continue; |
4918 | ||
4919 | case 'D': | |
df58fc94 RS |
4920 | gas_assert (!mips_opts.micromips); |
4921 | INSERT_OPERAND (0, FD, insn, va_arg (args, int)); | |
252b5132 RH |
4922 | continue; |
4923 | ||
4924 | case 'B': | |
df58fc94 RS |
4925 | gas_assert (!mips_opts.micromips); |
4926 | INSERT_OPERAND (0, CODE20, insn, va_arg (args, int)); | |
252b5132 RH |
4927 | continue; |
4928 | ||
4372b673 | 4929 | case 'J': |
df58fc94 RS |
4930 | gas_assert (!mips_opts.micromips); |
4931 | INSERT_OPERAND (0, CODE19, insn, va_arg (args, int)); | |
4372b673 NC |
4932 | continue; |
4933 | ||
252b5132 | 4934 | case 'q': |
df58fc94 RS |
4935 | gas_assert (!mips_opts.micromips); |
4936 | INSERT_OPERAND (0, CODE2, insn, va_arg (args, int)); | |
252b5132 RH |
4937 | continue; |
4938 | ||
4939 | case 'b': | |
4940 | case 's': | |
4941 | case 'r': | |
4942 | case 'v': | |
df58fc94 | 4943 | INSERT_OPERAND (mips_opts.micromips, RS, insn, va_arg (args, int)); |
252b5132 RH |
4944 | continue; |
4945 | ||
4946 | case 'i': | |
4947 | case 'j': | |
6e1304d8 | 4948 | macro_read_relocs (&args, r); |
9c2799c2 | 4949 | gas_assert (*r == BFD_RELOC_GPREL16 |
e391c024 RS |
4950 | || *r == BFD_RELOC_MIPS_HIGHER |
4951 | || *r == BFD_RELOC_HI16_S | |
4952 | || *r == BFD_RELOC_LO16 | |
4953 | || *r == BFD_RELOC_MIPS_GOT_OFST); | |
4954 | continue; | |
4955 | ||
4956 | case 'o': | |
4957 | macro_read_relocs (&args, r); | |
252b5132 RH |
4958 | continue; |
4959 | ||
4960 | case 'u': | |
6e1304d8 | 4961 | macro_read_relocs (&args, r); |
9c2799c2 | 4962 | gas_assert (ep != NULL |
90ecf173 MR |
4963 | && (ep->X_op == O_constant |
4964 | || (ep->X_op == O_symbol | |
4965 | && (*r == BFD_RELOC_MIPS_HIGHEST | |
4966 | || *r == BFD_RELOC_HI16_S | |
4967 | || *r == BFD_RELOC_HI16 | |
4968 | || *r == BFD_RELOC_GPREL16 | |
4969 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
4970 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); | |
252b5132 RH |
4971 | continue; |
4972 | ||
4973 | case 'p': | |
9c2799c2 | 4974 | gas_assert (ep != NULL); |
bad36eac | 4975 | |
252b5132 RH |
4976 | /* |
4977 | * This allows macro() to pass an immediate expression for | |
4978 | * creating short branches without creating a symbol. | |
bad36eac DJ |
4979 | * |
4980 | * We don't allow branch relaxation for these branches, as | |
4981 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
4982 | */ |
4983 | if (ep->X_op == O_constant) | |
4984 | { | |
df58fc94 RS |
4985 | /* For microMIPS we always use relocations for branches. |
4986 | So we should not resolve immediate values. */ | |
4987 | gas_assert (!mips_opts.micromips); | |
4988 | ||
bad36eac DJ |
4989 | if ((ep->X_add_number & 3) != 0) |
4990 | as_bad (_("branch to misaligned address (0x%lx)"), | |
4991 | (unsigned long) ep->X_add_number); | |
4992 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
4993 | as_bad (_("branch address range overflow (0x%lx)"), | |
4994 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
4995 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
4996 | ep = NULL; | |
4997 | } | |
4998 | else | |
0b25d3e6 | 4999 | *r = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
5000 | continue; |
5001 | ||
5002 | case 'a': | |
9c2799c2 | 5003 | gas_assert (ep != NULL); |
f6688943 | 5004 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
5005 | continue; |
5006 | ||
5007 | case 'C': | |
df58fc94 RS |
5008 | gas_assert (!mips_opts.micromips); |
5009 | INSERT_OPERAND (0, COPZ, insn, va_arg (args, unsigned long)); | |
252b5132 RH |
5010 | continue; |
5011 | ||
d43b4baf | 5012 | case 'k': |
df58fc94 RS |
5013 | INSERT_OPERAND (mips_opts.micromips, |
5014 | CACHE, insn, va_arg (args, unsigned long)); | |
5015 | continue; | |
5016 | ||
5017 | case '|': | |
5018 | gas_assert (mips_opts.micromips); | |
5019 | INSERT_OPERAND (1, TRAP, insn, va_arg (args, int)); | |
5020 | continue; | |
5021 | ||
5022 | case '.': | |
5023 | gas_assert (mips_opts.micromips); | |
5024 | INSERT_OPERAND (1, OFFSET10, insn, va_arg (args, int)); | |
5025 | continue; | |
5026 | ||
5027 | case '~': | |
5028 | gas_assert (mips_opts.micromips); | |
5029 | INSERT_OPERAND (1, OFFSET12, insn, va_arg (args, unsigned long)); | |
5030 | continue; | |
5031 | ||
5032 | case 'N': | |
5033 | gas_assert (mips_opts.micromips); | |
5034 | INSERT_OPERAND (1, BCC, insn, va_arg (args, int)); | |
5035 | continue; | |
5036 | ||
5037 | case 'm': /* Opcode extension character. */ | |
5038 | gas_assert (mips_opts.micromips); | |
5039 | switch (*fmt++) | |
5040 | { | |
5041 | case 'j': | |
5042 | INSERT_OPERAND (1, MJ, insn, va_arg (args, int)); | |
5043 | break; | |
5044 | ||
5045 | case 'p': | |
5046 | INSERT_OPERAND (1, MP, insn, va_arg (args, int)); | |
5047 | break; | |
5048 | ||
5049 | case 'F': | |
5050 | INSERT_OPERAND (1, IMMF, insn, va_arg (args, int)); | |
5051 | break; | |
5052 | ||
5053 | default: | |
5054 | internalError (); | |
5055 | } | |
d43b4baf TS |
5056 | continue; |
5057 | ||
252b5132 RH |
5058 | default: |
5059 | internalError (); | |
5060 | } | |
5061 | break; | |
5062 | } | |
5063 | va_end (args); | |
9c2799c2 | 5064 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 5065 | |
df58fc94 | 5066 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
5067 | } |
5068 | ||
5069 | static void | |
67c0d1eb | 5070 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
03ea81db | 5071 | va_list *args) |
252b5132 | 5072 | { |
1e915849 | 5073 | struct mips_opcode *mo; |
252b5132 | 5074 | struct mips_cl_insn insn; |
f6688943 TS |
5075 | bfd_reloc_code_real_type r[3] |
5076 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 5077 | |
1e915849 | 5078 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
9c2799c2 NC |
5079 | gas_assert (mo); |
5080 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 | 5081 | |
1e915849 | 5082 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 5083 | { |
1e915849 | 5084 | ++mo; |
9c2799c2 NC |
5085 | gas_assert (mo->name); |
5086 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
5087 | } |
5088 | ||
1e915849 | 5089 | create_insn (&insn, mo); |
252b5132 RH |
5090 | for (;;) |
5091 | { | |
5092 | int c; | |
5093 | ||
5094 | c = *fmt++; | |
5095 | switch (c) | |
5096 | { | |
5097 | case '\0': | |
5098 | break; | |
5099 | ||
5100 | case ',': | |
5101 | case '(': | |
5102 | case ')': | |
5103 | continue; | |
5104 | ||
5105 | case 'y': | |
5106 | case 'w': | |
03ea81db | 5107 | MIPS16_INSERT_OPERAND (RY, insn, va_arg (*args, int)); |
252b5132 RH |
5108 | continue; |
5109 | ||
5110 | case 'x': | |
5111 | case 'v': | |
03ea81db | 5112 | MIPS16_INSERT_OPERAND (RX, insn, va_arg (*args, int)); |
252b5132 RH |
5113 | continue; |
5114 | ||
5115 | case 'z': | |
03ea81db | 5116 | MIPS16_INSERT_OPERAND (RZ, insn, va_arg (*args, int)); |
252b5132 RH |
5117 | continue; |
5118 | ||
5119 | case 'Z': | |
03ea81db | 5120 | MIPS16_INSERT_OPERAND (MOVE32Z, insn, va_arg (*args, int)); |
252b5132 RH |
5121 | continue; |
5122 | ||
5123 | case '0': | |
5124 | case 'S': | |
5125 | case 'P': | |
5126 | case 'R': | |
5127 | continue; | |
5128 | ||
5129 | case 'X': | |
03ea81db | 5130 | MIPS16_INSERT_OPERAND (REGR32, insn, va_arg (*args, int)); |
252b5132 RH |
5131 | continue; |
5132 | ||
5133 | case 'Y': | |
5134 | { | |
5135 | int regno; | |
5136 | ||
03ea81db | 5137 | regno = va_arg (*args, int); |
252b5132 | 5138 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); |
a9e24354 | 5139 | MIPS16_INSERT_OPERAND (REG32R, insn, regno); |
252b5132 RH |
5140 | } |
5141 | continue; | |
5142 | ||
5143 | case '<': | |
5144 | case '>': | |
5145 | case '4': | |
5146 | case '5': | |
5147 | case 'H': | |
5148 | case 'W': | |
5149 | case 'D': | |
5150 | case 'j': | |
5151 | case '8': | |
5152 | case 'V': | |
5153 | case 'C': | |
5154 | case 'U': | |
5155 | case 'k': | |
5156 | case 'K': | |
5157 | case 'p': | |
5158 | case 'q': | |
5159 | { | |
9c2799c2 | 5160 | gas_assert (ep != NULL); |
252b5132 RH |
5161 | |
5162 | if (ep->X_op != O_constant) | |
874e8986 | 5163 | *r = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
5164 | else |
5165 | { | |
b34976b6 AM |
5166 | mips16_immed (NULL, 0, c, ep->X_add_number, FALSE, FALSE, |
5167 | FALSE, &insn.insn_opcode, &insn.use_extend, | |
c4e7957c | 5168 | &insn.extend); |
252b5132 | 5169 | ep = NULL; |
f6688943 | 5170 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
5171 | } |
5172 | } | |
5173 | continue; | |
5174 | ||
5175 | case '6': | |
03ea81db | 5176 | MIPS16_INSERT_OPERAND (IMM6, insn, va_arg (*args, int)); |
252b5132 RH |
5177 | continue; |
5178 | } | |
5179 | ||
5180 | break; | |
5181 | } | |
5182 | ||
9c2799c2 | 5183 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 5184 | |
df58fc94 | 5185 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
5186 | } |
5187 | ||
2051e8c4 MR |
5188 | /* |
5189 | * Sign-extend 32-bit mode constants that have bit 31 set and all | |
5190 | * higher bits unset. | |
5191 | */ | |
9f872bbe | 5192 | static void |
2051e8c4 MR |
5193 | normalize_constant_expr (expressionS *ex) |
5194 | { | |
9ee2a2d4 | 5195 | if (ex->X_op == O_constant |
2051e8c4 MR |
5196 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) |
5197 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
5198 | - 0x80000000); | |
5199 | } | |
5200 | ||
5201 | /* | |
5202 | * Sign-extend 32-bit mode address offsets that have bit 31 set and | |
5203 | * all higher bits unset. | |
5204 | */ | |
5205 | static void | |
5206 | normalize_address_expr (expressionS *ex) | |
5207 | { | |
5208 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
5209 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
5210 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
5211 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
5212 | - 0x80000000); | |
5213 | } | |
5214 | ||
438c16b8 TS |
5215 | /* |
5216 | * Generate a "jalr" instruction with a relocation hint to the called | |
5217 | * function. This occurs in NewABI PIC code. | |
5218 | */ | |
5219 | static void | |
df58fc94 | 5220 | macro_build_jalr (expressionS *ep, int cprestore) |
438c16b8 | 5221 | { |
df58fc94 RS |
5222 | static const bfd_reloc_code_real_type jalr_relocs[2] |
5223 | = { BFD_RELOC_MIPS_JALR, BFD_RELOC_MICROMIPS_JALR }; | |
5224 | bfd_reloc_code_real_type jalr_reloc = jalr_relocs[mips_opts.micromips]; | |
5225 | const char *jalr; | |
685736be | 5226 | char *f = NULL; |
b34976b6 | 5227 | |
1180b5a4 | 5228 | if (MIPS_JALR_HINT_P (ep)) |
f21f8242 | 5229 | { |
cc3d92a5 | 5230 | frag_grow (8); |
f21f8242 AO |
5231 | f = frag_more (0); |
5232 | } | |
df58fc94 RS |
5233 | if (!mips_opts.micromips) |
5234 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); | |
5235 | else | |
5236 | { | |
5237 | jalr = mips_opts.noreorder && !cprestore ? "jalr" : "jalrs"; | |
5238 | if (MIPS_JALR_HINT_P (ep)) | |
5239 | macro_build (NULL, jalr, "t,s", RA, PIC_CALL_REG); | |
5240 | else | |
5241 | macro_build (NULL, jalr, "mj", PIC_CALL_REG); | |
5242 | } | |
1180b5a4 | 5243 | if (MIPS_JALR_HINT_P (ep)) |
df58fc94 | 5244 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, ep, FALSE, jalr_reloc); |
438c16b8 TS |
5245 | } |
5246 | ||
252b5132 RH |
5247 | /* |
5248 | * Generate a "lui" instruction. | |
5249 | */ | |
5250 | static void | |
67c0d1eb | 5251 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 | 5252 | { |
9c2799c2 | 5253 | gas_assert (! mips_opts.mips16); |
252b5132 | 5254 | |
df58fc94 | 5255 | if (ep->X_op != O_constant) |
252b5132 | 5256 | { |
9c2799c2 | 5257 | gas_assert (ep->X_op == O_symbol); |
bbe506e8 TS |
5258 | /* _gp_disp is a special case, used from s_cpload. |
5259 | __gnu_local_gp is used if mips_no_shared. */ | |
9c2799c2 | 5260 | gas_assert (mips_pic == NO_PIC |
78e1bb40 | 5261 | || (! HAVE_NEWABI |
aa6975fb ILT |
5262 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
5263 | || (! mips_in_shared | |
bbe506e8 TS |
5264 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
5265 | "__gnu_local_gp") == 0)); | |
252b5132 RH |
5266 | } |
5267 | ||
df58fc94 | 5268 | macro_build (ep, "lui", LUI_FMT, regnum, BFD_RELOC_HI16_S); |
252b5132 RH |
5269 | } |
5270 | ||
885add95 CD |
5271 | /* Generate a sequence of instructions to do a load or store from a constant |
5272 | offset off of a base register (breg) into/from a target register (treg), | |
5273 | using AT if necessary. */ | |
5274 | static void | |
67c0d1eb RS |
5275 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
5276 | int treg, int breg, int dbl) | |
885add95 | 5277 | { |
9c2799c2 | 5278 | gas_assert (ep->X_op == O_constant); |
885add95 | 5279 | |
256ab948 | 5280 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
5281 | if (!dbl) |
5282 | normalize_constant_expr (ep); | |
256ab948 | 5283 | |
67c1ffbe | 5284 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 5285 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
5286 | as_warn (_("operand overflow")); |
5287 | ||
5288 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
5289 | { | |
5290 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 5291 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
5292 | } |
5293 | else | |
5294 | { | |
5295 | /* 32-bit offset, need multiple instructions and AT, like: | |
5296 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
5297 | addu $tempreg,$tempreg,$breg | |
5298 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
5299 | to handle the complete offset. */ | |
67c0d1eb RS |
5300 | macro_build_lui (ep, AT); |
5301 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
5302 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 | 5303 | |
741fe287 | 5304 | if (!mips_opts.at) |
8fc2e39e | 5305 | as_bad (_("Macro used $at after \".set noat\"")); |
885add95 CD |
5306 | } |
5307 | } | |
5308 | ||
252b5132 RH |
5309 | /* set_at() |
5310 | * Generates code to set the $at register to true (one) | |
5311 | * if reg is less than the immediate expression. | |
5312 | */ | |
5313 | static void | |
67c0d1eb | 5314 | set_at (int reg, int unsignedp) |
252b5132 RH |
5315 | { |
5316 | if (imm_expr.X_op == O_constant | |
5317 | && imm_expr.X_add_number >= -0x8000 | |
5318 | && imm_expr.X_add_number < 0x8000) | |
67c0d1eb RS |
5319 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
5320 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
5321 | else |
5322 | { | |
67c0d1eb RS |
5323 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
5324 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); | |
252b5132 RH |
5325 | } |
5326 | } | |
5327 | ||
5328 | /* Warn if an expression is not a constant. */ | |
5329 | ||
5330 | static void | |
17a2f251 | 5331 | check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex) |
252b5132 RH |
5332 | { |
5333 | if (ex->X_op == O_big) | |
5334 | as_bad (_("unsupported large constant")); | |
5335 | else if (ex->X_op != O_constant) | |
9ee2a2d4 MR |
5336 | as_bad (_("Instruction %s requires absolute expression"), |
5337 | ip->insn_mo->name); | |
13757d0c | 5338 | |
9ee2a2d4 MR |
5339 | if (HAVE_32BIT_GPRS) |
5340 | normalize_constant_expr (ex); | |
252b5132 RH |
5341 | } |
5342 | ||
5343 | /* Count the leading zeroes by performing a binary chop. This is a | |
5344 | bulky bit of source, but performance is a LOT better for the | |
5345 | majority of values than a simple loop to count the bits: | |
5346 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
5347 | if ((v) & (1 << (31 - lcnt))) | |
5348 | break; | |
5349 | However it is not code size friendly, and the gain will drop a bit | |
5350 | on certain cached systems. | |
5351 | */ | |
5352 | #define COUNT_TOP_ZEROES(v) \ | |
5353 | (((v) & ~0xffff) == 0 \ | |
5354 | ? ((v) & ~0xff) == 0 \ | |
5355 | ? ((v) & ~0xf) == 0 \ | |
5356 | ? ((v) & ~0x3) == 0 \ | |
5357 | ? ((v) & ~0x1) == 0 \ | |
5358 | ? !(v) \ | |
5359 | ? 32 \ | |
5360 | : 31 \ | |
5361 | : 30 \ | |
5362 | : ((v) & ~0x7) == 0 \ | |
5363 | ? 29 \ | |
5364 | : 28 \ | |
5365 | : ((v) & ~0x3f) == 0 \ | |
5366 | ? ((v) & ~0x1f) == 0 \ | |
5367 | ? 27 \ | |
5368 | : 26 \ | |
5369 | : ((v) & ~0x7f) == 0 \ | |
5370 | ? 25 \ | |
5371 | : 24 \ | |
5372 | : ((v) & ~0xfff) == 0 \ | |
5373 | ? ((v) & ~0x3ff) == 0 \ | |
5374 | ? ((v) & ~0x1ff) == 0 \ | |
5375 | ? 23 \ | |
5376 | : 22 \ | |
5377 | : ((v) & ~0x7ff) == 0 \ | |
5378 | ? 21 \ | |
5379 | : 20 \ | |
5380 | : ((v) & ~0x3fff) == 0 \ | |
5381 | ? ((v) & ~0x1fff) == 0 \ | |
5382 | ? 19 \ | |
5383 | : 18 \ | |
5384 | : ((v) & ~0x7fff) == 0 \ | |
5385 | ? 17 \ | |
5386 | : 16 \ | |
5387 | : ((v) & ~0xffffff) == 0 \ | |
5388 | ? ((v) & ~0xfffff) == 0 \ | |
5389 | ? ((v) & ~0x3ffff) == 0 \ | |
5390 | ? ((v) & ~0x1ffff) == 0 \ | |
5391 | ? 15 \ | |
5392 | : 14 \ | |
5393 | : ((v) & ~0x7ffff) == 0 \ | |
5394 | ? 13 \ | |
5395 | : 12 \ | |
5396 | : ((v) & ~0x3fffff) == 0 \ | |
5397 | ? ((v) & ~0x1fffff) == 0 \ | |
5398 | ? 11 \ | |
5399 | : 10 \ | |
5400 | : ((v) & ~0x7fffff) == 0 \ | |
5401 | ? 9 \ | |
5402 | : 8 \ | |
5403 | : ((v) & ~0xfffffff) == 0 \ | |
5404 | ? ((v) & ~0x3ffffff) == 0 \ | |
5405 | ? ((v) & ~0x1ffffff) == 0 \ | |
5406 | ? 7 \ | |
5407 | : 6 \ | |
5408 | : ((v) & ~0x7ffffff) == 0 \ | |
5409 | ? 5 \ | |
5410 | : 4 \ | |
5411 | : ((v) & ~0x3fffffff) == 0 \ | |
5412 | ? ((v) & ~0x1fffffff) == 0 \ | |
5413 | ? 3 \ | |
5414 | : 2 \ | |
5415 | : ((v) & ~0x7fffffff) == 0 \ | |
5416 | ? 1 \ | |
5417 | : 0) | |
5418 | ||
5419 | /* load_register() | |
67c1ffbe | 5420 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
5421 | * an absolute expression value into a register. |
5422 | */ | |
5423 | static void | |
67c0d1eb | 5424 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
5425 | { |
5426 | int freg; | |
5427 | expressionS hi32, lo32; | |
5428 | ||
5429 | if (ep->X_op != O_big) | |
5430 | { | |
9c2799c2 | 5431 | gas_assert (ep->X_op == O_constant); |
256ab948 TS |
5432 | |
5433 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
5434 | if (!dbl) |
5435 | normalize_constant_expr (ep); | |
256ab948 TS |
5436 | |
5437 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
5438 | { |
5439 | /* We can handle 16 bit signed values with an addiu to | |
5440 | $zero. No need to ever use daddiu here, since $zero and | |
5441 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 5442 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5443 | return; |
5444 | } | |
5445 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
5446 | { | |
5447 | /* We can handle 16 bit unsigned values with an ori to | |
5448 | $zero. */ | |
67c0d1eb | 5449 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5450 | return; |
5451 | } | |
256ab948 | 5452 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
5453 | { |
5454 | /* 32 bit values require an lui. */ | |
df58fc94 | 5455 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 5456 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 5457 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
5458 | return; |
5459 | } | |
5460 | } | |
5461 | ||
5462 | /* The value is larger than 32 bits. */ | |
5463 | ||
2051e8c4 | 5464 | if (!dbl || HAVE_32BIT_GPRS) |
252b5132 | 5465 | { |
55e08f71 NC |
5466 | char value[32]; |
5467 | ||
5468 | sprintf_vma (value, ep->X_add_number); | |
20e1fcfd | 5469 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 5470 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5471 | return; |
5472 | } | |
5473 | ||
5474 | if (ep->X_op != O_big) | |
5475 | { | |
5476 | hi32 = *ep; | |
5477 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
5478 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
5479 | hi32.X_add_number &= 0xffffffff; | |
5480 | lo32 = *ep; | |
5481 | lo32.X_add_number &= 0xffffffff; | |
5482 | } | |
5483 | else | |
5484 | { | |
9c2799c2 | 5485 | gas_assert (ep->X_add_number > 2); |
252b5132 RH |
5486 | if (ep->X_add_number == 3) |
5487 | generic_bignum[3] = 0; | |
5488 | else if (ep->X_add_number > 4) | |
5489 | as_bad (_("Number larger than 64 bits")); | |
5490 | lo32.X_op = O_constant; | |
5491 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
5492 | hi32.X_op = O_constant; | |
5493 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
5494 | } | |
5495 | ||
5496 | if (hi32.X_add_number == 0) | |
5497 | freg = 0; | |
5498 | else | |
5499 | { | |
5500 | int shift, bit; | |
5501 | unsigned long hi, lo; | |
5502 | ||
956cd1d6 | 5503 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
5504 | { |
5505 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
5506 | { | |
67c0d1eb | 5507 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
5508 | return; |
5509 | } | |
5510 | if (lo32.X_add_number & 0x80000000) | |
5511 | { | |
df58fc94 | 5512 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 5513 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 5514 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
5515 | return; |
5516 | } | |
5517 | } | |
252b5132 RH |
5518 | |
5519 | /* Check for 16bit shifted constant. We know that hi32 is | |
5520 | non-zero, so start the mask on the first bit of the hi32 | |
5521 | value. */ | |
5522 | shift = 17; | |
5523 | do | |
beae10d5 KH |
5524 | { |
5525 | unsigned long himask, lomask; | |
5526 | ||
5527 | if (shift < 32) | |
5528 | { | |
5529 | himask = 0xffff >> (32 - shift); | |
5530 | lomask = (0xffff << shift) & 0xffffffff; | |
5531 | } | |
5532 | else | |
5533 | { | |
5534 | himask = 0xffff << (shift - 32); | |
5535 | lomask = 0; | |
5536 | } | |
5537 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
5538 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
5539 | { | |
5540 | expressionS tmp; | |
5541 | ||
5542 | tmp.X_op = O_constant; | |
5543 | if (shift < 32) | |
5544 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
5545 | | (lo32.X_add_number >> shift)); | |
5546 | else | |
5547 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb | 5548 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
df58fc94 | 5549 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 5550 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
5551 | return; |
5552 | } | |
f9419b05 | 5553 | ++shift; |
beae10d5 KH |
5554 | } |
5555 | while (shift <= (64 - 16)); | |
252b5132 RH |
5556 | |
5557 | /* Find the bit number of the lowest one bit, and store the | |
5558 | shifted value in hi/lo. */ | |
5559 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
5560 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
5561 | if (lo != 0) | |
5562 | { | |
5563 | bit = 0; | |
5564 | while ((lo & 1) == 0) | |
5565 | { | |
5566 | lo >>= 1; | |
5567 | ++bit; | |
5568 | } | |
5569 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
5570 | hi >>= bit; | |
5571 | } | |
5572 | else | |
5573 | { | |
5574 | bit = 32; | |
5575 | while ((hi & 1) == 0) | |
5576 | { | |
5577 | hi >>= 1; | |
5578 | ++bit; | |
5579 | } | |
5580 | lo = hi; | |
5581 | hi = 0; | |
5582 | } | |
5583 | ||
5584 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
5585 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
5586 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
5587 | { |
5588 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 5589 | if (shift != 0) |
beae10d5 | 5590 | { |
252b5132 RH |
5591 | expressionS tmp; |
5592 | ||
5593 | /* This instruction will set the register to be all | |
5594 | ones. */ | |
beae10d5 KH |
5595 | tmp.X_op = O_constant; |
5596 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 5597 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
5598 | if (bit != 0) |
5599 | { | |
5600 | bit += shift; | |
df58fc94 | 5601 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 5602 | reg, reg, (bit >= 32) ? bit - 32 : bit); |
beae10d5 | 5603 | } |
df58fc94 | 5604 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", SHFT_FMT, |
67c0d1eb | 5605 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
5606 | return; |
5607 | } | |
5608 | } | |
252b5132 RH |
5609 | |
5610 | /* Sign extend hi32 before calling load_register, because we can | |
5611 | generally get better code when we load a sign extended value. */ | |
5612 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 5613 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 5614 | load_register (reg, &hi32, 0); |
252b5132 RH |
5615 | freg = reg; |
5616 | } | |
5617 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
5618 | { | |
5619 | if (freg != 0) | |
5620 | { | |
df58fc94 | 5621 | macro_build (NULL, "dsll32", SHFT_FMT, reg, freg, 0); |
252b5132 RH |
5622 | freg = reg; |
5623 | } | |
5624 | } | |
5625 | else | |
5626 | { | |
5627 | expressionS mid16; | |
5628 | ||
956cd1d6 | 5629 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 5630 | { |
df58fc94 RS |
5631 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
5632 | macro_build (NULL, "dsrl32", SHFT_FMT, reg, reg, 0); | |
beae10d5 KH |
5633 | return; |
5634 | } | |
252b5132 RH |
5635 | |
5636 | if (freg != 0) | |
5637 | { | |
df58fc94 | 5638 | macro_build (NULL, "dsll", SHFT_FMT, reg, freg, 16); |
252b5132 RH |
5639 | freg = reg; |
5640 | } | |
5641 | mid16 = lo32; | |
5642 | mid16.X_add_number >>= 16; | |
67c0d1eb | 5643 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
df58fc94 | 5644 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
252b5132 RH |
5645 | freg = reg; |
5646 | } | |
5647 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 5648 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
5649 | } |
5650 | ||
269137b2 TS |
5651 | static inline void |
5652 | load_delay_nop (void) | |
5653 | { | |
5654 | if (!gpr_interlocks) | |
5655 | macro_build (NULL, "nop", ""); | |
5656 | } | |
5657 | ||
252b5132 RH |
5658 | /* Load an address into a register. */ |
5659 | ||
5660 | static void | |
67c0d1eb | 5661 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 5662 | { |
252b5132 RH |
5663 | if (ep->X_op != O_constant |
5664 | && ep->X_op != O_symbol) | |
5665 | { | |
5666 | as_bad (_("expression too complex")); | |
5667 | ep->X_op = O_constant; | |
5668 | } | |
5669 | ||
5670 | if (ep->X_op == O_constant) | |
5671 | { | |
67c0d1eb | 5672 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
5673 | return; |
5674 | } | |
5675 | ||
5676 | if (mips_pic == NO_PIC) | |
5677 | { | |
5678 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 5679 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
5680 | Otherwise we want |
5681 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
5682 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 5683 | If we have an addend, we always use the latter form. |
76b3015f | 5684 | |
d6bc6245 TS |
5685 | With 64bit address space and a usable $at we want |
5686 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5687 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5688 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5689 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
5690 | dsll32 $reg,0 | |
3a482fd5 | 5691 | daddu $reg,$reg,$at |
76b3015f | 5692 | |
c03099e6 | 5693 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
5694 | on superscalar processors. |
5695 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5696 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5697 | dsll $reg,16 | |
5698 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
5699 | dsll $reg,16 | |
5700 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
5701 | |
5702 | For GP relative symbols in 64bit address space we can use | |
5703 | the same sequence as in 32bit address space. */ | |
aed1a261 | 5704 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 5705 | { |
6caf9ef4 TS |
5706 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
5707 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
5708 | { | |
5709 | relax_start (ep->X_add_symbol); | |
5710 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
5711 | mips_gp_register, BFD_RELOC_GPREL16); | |
5712 | relax_switch (); | |
5713 | } | |
d6bc6245 | 5714 | |
741fe287 | 5715 | if (*used_at == 0 && mips_opts.at) |
d6bc6245 | 5716 | { |
df58fc94 RS |
5717 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
5718 | macro_build (ep, "lui", LUI_FMT, AT, BFD_RELOC_HI16_S); | |
67c0d1eb RS |
5719 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
5720 | BFD_RELOC_MIPS_HIGHER); | |
5721 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
df58fc94 | 5722 | macro_build (NULL, "dsll32", SHFT_FMT, reg, reg, 0); |
67c0d1eb | 5723 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); |
d6bc6245 TS |
5724 | *used_at = 1; |
5725 | } | |
5726 | else | |
5727 | { | |
df58fc94 | 5728 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb RS |
5729 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
5730 | BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 5731 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 5732 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); |
df58fc94 | 5733 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 5734 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); |
d6bc6245 | 5735 | } |
6caf9ef4 TS |
5736 | |
5737 | if (mips_relax.sequence) | |
5738 | relax_end (); | |
d6bc6245 | 5739 | } |
252b5132 RH |
5740 | else |
5741 | { | |
d6bc6245 | 5742 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 5743 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 5744 | { |
4d7206a2 | 5745 | relax_start (ep->X_add_symbol); |
67c0d1eb | 5746 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 5747 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 5748 | relax_switch (); |
d6bc6245 | 5749 | } |
67c0d1eb RS |
5750 | macro_build_lui (ep, reg); |
5751 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
5752 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
5753 | if (mips_relax.sequence) |
5754 | relax_end (); | |
d6bc6245 | 5755 | } |
252b5132 | 5756 | } |
0a44bf69 | 5757 | else if (!mips_big_got) |
252b5132 RH |
5758 | { |
5759 | expressionS ex; | |
5760 | ||
5761 | /* If this is a reference to an external symbol, we want | |
5762 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5763 | Otherwise we want | |
5764 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5765 | nop | |
5766 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
5767 | If there is a constant, it must be added in after. |
5768 | ||
ed6fb7bd | 5769 | If we have NewABI, we want |
f5040a92 AO |
5770 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
5771 | unless we're referencing a global symbol with a non-zero | |
5772 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
5773 | if (HAVE_NEWABI) |
5774 | { | |
f5040a92 AO |
5775 | if (ep->X_add_number) |
5776 | { | |
4d7206a2 | 5777 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 5778 | ep->X_add_number = 0; |
4d7206a2 | 5779 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
5780 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
5781 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5782 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
5783 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5784 | ex.X_op = O_constant; | |
67c0d1eb | 5785 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5786 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 5787 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 5788 | relax_switch (); |
f5040a92 | 5789 | } |
67c0d1eb | 5790 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5791 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
5792 | if (mips_relax.sequence) |
5793 | relax_end (); | |
ed6fb7bd SC |
5794 | } |
5795 | else | |
5796 | { | |
f5040a92 AO |
5797 | ex.X_add_number = ep->X_add_number; |
5798 | ep->X_add_number = 0; | |
67c0d1eb RS |
5799 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
5800 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 5801 | load_delay_nop (); |
4d7206a2 RS |
5802 | relax_start (ep->X_add_symbol); |
5803 | relax_switch (); | |
67c0d1eb | 5804 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 5805 | BFD_RELOC_LO16); |
4d7206a2 | 5806 | relax_end (); |
ed6fb7bd | 5807 | |
f5040a92 AO |
5808 | if (ex.X_add_number != 0) |
5809 | { | |
5810 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
5811 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5812 | ex.X_op = O_constant; | |
67c0d1eb | 5813 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5814 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 5815 | } |
252b5132 RH |
5816 | } |
5817 | } | |
0a44bf69 | 5818 | else if (mips_big_got) |
252b5132 RH |
5819 | { |
5820 | expressionS ex; | |
252b5132 RH |
5821 | |
5822 | /* This is the large GOT case. If this is a reference to an | |
5823 | external symbol, we want | |
5824 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5825 | addu $reg,$reg,$gp | |
5826 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
5827 | |
5828 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
5829 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
5830 | nop | |
5831 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 5832 | If there is a constant, it must be added in after. |
f5040a92 AO |
5833 | |
5834 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
5835 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
5836 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 5837 | */ |
438c16b8 TS |
5838 | if (HAVE_NEWABI) |
5839 | { | |
4d7206a2 | 5840 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 5841 | ep->X_add_number = 0; |
4d7206a2 | 5842 | relax_start (ep->X_add_symbol); |
df58fc94 | 5843 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
5844 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5845 | reg, reg, mips_gp_register); | |
5846 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
5847 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
5848 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
5849 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5850 | else if (ex.X_add_number) | |
5851 | { | |
5852 | ex.X_op = O_constant; | |
67c0d1eb RS |
5853 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5854 | BFD_RELOC_LO16); | |
f5040a92 AO |
5855 | } |
5856 | ||
5857 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 5858 | relax_switch (); |
67c0d1eb | 5859 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5860 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
5861 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5862 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 5863 | relax_end (); |
438c16b8 | 5864 | } |
252b5132 | 5865 | else |
438c16b8 | 5866 | { |
f5040a92 AO |
5867 | ex.X_add_number = ep->X_add_number; |
5868 | ep->X_add_number = 0; | |
4d7206a2 | 5869 | relax_start (ep->X_add_symbol); |
df58fc94 | 5870 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
5871 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5872 | reg, reg, mips_gp_register); | |
5873 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
5874 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
5875 | relax_switch (); |
5876 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
5877 | { |
5878 | /* We need a nop before loading from $gp. This special | |
5879 | check is required because the lui which starts the main | |
5880 | instruction stream does not refer to $gp, and so will not | |
5881 | insert the nop which may be required. */ | |
67c0d1eb | 5882 | macro_build (NULL, "nop", ""); |
438c16b8 | 5883 | } |
67c0d1eb | 5884 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5885 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 5886 | load_delay_nop (); |
67c0d1eb | 5887 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 5888 | BFD_RELOC_LO16); |
4d7206a2 | 5889 | relax_end (); |
438c16b8 | 5890 | |
f5040a92 AO |
5891 | if (ex.X_add_number != 0) |
5892 | { | |
5893 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
5894 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5895 | ex.X_op = O_constant; | |
67c0d1eb RS |
5896 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5897 | BFD_RELOC_LO16); | |
f5040a92 | 5898 | } |
252b5132 RH |
5899 | } |
5900 | } | |
252b5132 RH |
5901 | else |
5902 | abort (); | |
8fc2e39e | 5903 | |
741fe287 | 5904 | if (!mips_opts.at && *used_at == 1) |
8fc2e39e | 5905 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
5906 | } |
5907 | ||
ea1fb5dc RS |
5908 | /* Move the contents of register SOURCE into register DEST. */ |
5909 | ||
5910 | static void | |
67c0d1eb | 5911 | move_register (int dest, int source) |
ea1fb5dc | 5912 | { |
df58fc94 RS |
5913 | /* Prefer to use a 16-bit microMIPS instruction unless the previous |
5914 | instruction specifically requires a 32-bit one. */ | |
5915 | if (mips_opts.micromips | |
5916 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
5917 | macro_build (NULL, "move", "mp,mj", dest, source ); | |
5918 | else | |
5919 | macro_build (NULL, HAVE_32BIT_GPRS ? "addu" : "daddu", "d,v,t", | |
5920 | dest, source, 0); | |
ea1fb5dc RS |
5921 | } |
5922 | ||
4d7206a2 | 5923 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
5924 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
5925 | The two alternatives are: | |
4d7206a2 RS |
5926 | |
5927 | Global symbol Local sybmol | |
5928 | ------------- ------------ | |
5929 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
5930 | ... ... | |
5931 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
5932 | ||
5933 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
5934 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
5935 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
5936 | |
5937 | static void | |
67c0d1eb | 5938 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
5939 | { |
5940 | expressionS global; | |
5941 | ||
5942 | global = *local; | |
5943 | global.X_add_number = 0; | |
5944 | ||
5945 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
5946 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
5947 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 5948 | relax_switch (); |
67c0d1eb RS |
5949 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
5950 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
5951 | relax_end (); |
5952 | } | |
5953 | ||
5954 | static void | |
67c0d1eb | 5955 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
5956 | { |
5957 | expressionS global; | |
5958 | ||
5959 | global.X_op = O_constant; | |
5960 | global.X_op_symbol = NULL; | |
5961 | global.X_add_symbol = NULL; | |
5962 | global.X_add_number = local->X_add_number; | |
5963 | ||
5964 | relax_start (local->X_add_symbol); | |
67c0d1eb | 5965 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
5966 | dest, dest, BFD_RELOC_LO16); |
5967 | relax_switch (); | |
67c0d1eb | 5968 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
5969 | relax_end (); |
5970 | } | |
5971 | ||
f6a22291 MR |
5972 | static void |
5973 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
5974 | { | |
5975 | expressionS global; | |
5976 | int hold_mips_optimize; | |
5977 | ||
5978 | global.X_op = O_constant; | |
5979 | global.X_op_symbol = NULL; | |
5980 | global.X_add_symbol = NULL; | |
5981 | global.X_add_number = local->X_add_number; | |
5982 | ||
5983 | relax_start (local->X_add_symbol); | |
5984 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
5985 | relax_switch (); | |
5986 | /* Set mips_optimize around the lui instruction to avoid | |
5987 | inserting an unnecessary nop after the lw. */ | |
5988 | hold_mips_optimize = mips_optimize; | |
5989 | mips_optimize = 2; | |
5990 | macro_build_lui (&global, tmp); | |
5991 | mips_optimize = hold_mips_optimize; | |
5992 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
5993 | relax_end (); | |
5994 | ||
5995 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
5996 | } | |
5997 | ||
df58fc94 RS |
5998 | /* Emit a sequence of instructions to emulate a branch likely operation. |
5999 | BR is an ordinary branch corresponding to one to be emulated. BRNEG | |
6000 | is its complementing branch with the original condition negated. | |
6001 | CALL is set if the original branch specified the link operation. | |
6002 | EP, FMT, SREG and TREG specify the usual macro_build() parameters. | |
6003 | ||
6004 | Code like this is produced in the noreorder mode: | |
6005 | ||
6006 | BRNEG <args>, 1f | |
6007 | nop | |
6008 | b <sym> | |
6009 | delay slot (executed only if branch taken) | |
6010 | 1: | |
6011 | ||
6012 | or, if CALL is set: | |
6013 | ||
6014 | BRNEG <args>, 1f | |
6015 | nop | |
6016 | bal <sym> | |
6017 | delay slot (executed only if branch taken) | |
6018 | 1: | |
6019 | ||
6020 | In the reorder mode the delay slot would be filled with a nop anyway, | |
6021 | so code produced is simply: | |
6022 | ||
6023 | BR <args>, <sym> | |
6024 | nop | |
6025 | ||
6026 | This function is used when producing code for the microMIPS ASE that | |
6027 | does not implement branch likely instructions in hardware. */ | |
6028 | ||
6029 | static void | |
6030 | macro_build_branch_likely (const char *br, const char *brneg, | |
6031 | int call, expressionS *ep, const char *fmt, | |
6032 | unsigned int sreg, unsigned int treg) | |
6033 | { | |
6034 | int noreorder = mips_opts.noreorder; | |
6035 | expressionS expr1; | |
6036 | ||
6037 | gas_assert (mips_opts.micromips); | |
6038 | start_noreorder (); | |
6039 | if (noreorder) | |
6040 | { | |
6041 | micromips_label_expr (&expr1); | |
6042 | macro_build (&expr1, brneg, fmt, sreg, treg); | |
6043 | macro_build (NULL, "nop", ""); | |
6044 | macro_build (ep, call ? "bal" : "b", "p"); | |
6045 | ||
6046 | /* Set to true so that append_insn adds a label. */ | |
6047 | emit_branch_likely_macro = TRUE; | |
6048 | } | |
6049 | else | |
6050 | { | |
6051 | macro_build (ep, br, fmt, sreg, treg); | |
6052 | macro_build (NULL, "nop", ""); | |
6053 | } | |
6054 | end_noreorder (); | |
6055 | } | |
6056 | ||
6057 | /* Emit a coprocessor branch-likely macro specified by TYPE, using CC as | |
6058 | the condition code tested. EP specifies the branch target. */ | |
6059 | ||
6060 | static void | |
6061 | macro_build_branch_ccl (int type, expressionS *ep, unsigned int cc) | |
6062 | { | |
6063 | const int call = 0; | |
6064 | const char *brneg; | |
6065 | const char *br; | |
6066 | ||
6067 | switch (type) | |
6068 | { | |
6069 | case M_BC1FL: | |
6070 | br = "bc1f"; | |
6071 | brneg = "bc1t"; | |
6072 | break; | |
6073 | case M_BC1TL: | |
6074 | br = "bc1t"; | |
6075 | brneg = "bc1f"; | |
6076 | break; | |
6077 | case M_BC2FL: | |
6078 | br = "bc2f"; | |
6079 | brneg = "bc2t"; | |
6080 | break; | |
6081 | case M_BC2TL: | |
6082 | br = "bc2t"; | |
6083 | brneg = "bc2f"; | |
6084 | break; | |
6085 | default: | |
6086 | abort (); | |
6087 | } | |
6088 | macro_build_branch_likely (br, brneg, call, ep, "N,p", cc, ZERO); | |
6089 | } | |
6090 | ||
6091 | /* Emit a two-argument branch macro specified by TYPE, using SREG as | |
6092 | the register tested. EP specifies the branch target. */ | |
6093 | ||
6094 | static void | |
6095 | macro_build_branch_rs (int type, expressionS *ep, unsigned int sreg) | |
6096 | { | |
6097 | const char *brneg = NULL; | |
6098 | const char *br; | |
6099 | int call = 0; | |
6100 | ||
6101 | switch (type) | |
6102 | { | |
6103 | case M_BGEZ: | |
6104 | br = "bgez"; | |
6105 | break; | |
6106 | case M_BGEZL: | |
6107 | br = mips_opts.micromips ? "bgez" : "bgezl"; | |
6108 | brneg = "bltz"; | |
6109 | break; | |
6110 | case M_BGEZALL: | |
6111 | gas_assert (mips_opts.micromips); | |
6112 | br = "bgezals"; | |
6113 | brneg = "bltz"; | |
6114 | call = 1; | |
6115 | break; | |
6116 | case M_BGTZ: | |
6117 | br = "bgtz"; | |
6118 | break; | |
6119 | case M_BGTZL: | |
6120 | br = mips_opts.micromips ? "bgtz" : "bgtzl"; | |
6121 | brneg = "blez"; | |
6122 | break; | |
6123 | case M_BLEZ: | |
6124 | br = "blez"; | |
6125 | break; | |
6126 | case M_BLEZL: | |
6127 | br = mips_opts.micromips ? "blez" : "blezl"; | |
6128 | brneg = "bgtz"; | |
6129 | break; | |
6130 | case M_BLTZ: | |
6131 | br = "bltz"; | |
6132 | break; | |
6133 | case M_BLTZL: | |
6134 | br = mips_opts.micromips ? "bltz" : "bltzl"; | |
6135 | brneg = "bgez"; | |
6136 | break; | |
6137 | case M_BLTZALL: | |
6138 | gas_assert (mips_opts.micromips); | |
6139 | br = "bltzals"; | |
6140 | brneg = "bgez"; | |
6141 | call = 1; | |
6142 | break; | |
6143 | default: | |
6144 | abort (); | |
6145 | } | |
6146 | if (mips_opts.micromips && brneg) | |
6147 | macro_build_branch_likely (br, brneg, call, ep, "s,p", sreg, ZERO); | |
6148 | else | |
6149 | macro_build (ep, br, "s,p", sreg); | |
6150 | } | |
6151 | ||
6152 | /* Emit a three-argument branch macro specified by TYPE, using SREG and | |
6153 | TREG as the registers tested. EP specifies the branch target. */ | |
6154 | ||
6155 | static void | |
6156 | macro_build_branch_rsrt (int type, expressionS *ep, | |
6157 | unsigned int sreg, unsigned int treg) | |
6158 | { | |
6159 | const char *brneg = NULL; | |
6160 | const int call = 0; | |
6161 | const char *br; | |
6162 | ||
6163 | switch (type) | |
6164 | { | |
6165 | case M_BEQ: | |
6166 | case M_BEQ_I: | |
6167 | br = "beq"; | |
6168 | break; | |
6169 | case M_BEQL: | |
6170 | case M_BEQL_I: | |
6171 | br = mips_opts.micromips ? "beq" : "beql"; | |
6172 | brneg = "bne"; | |
6173 | break; | |
6174 | case M_BNE: | |
6175 | case M_BNE_I: | |
6176 | br = "bne"; | |
6177 | break; | |
6178 | case M_BNEL: | |
6179 | case M_BNEL_I: | |
6180 | br = mips_opts.micromips ? "bne" : "bnel"; | |
6181 | brneg = "beq"; | |
6182 | break; | |
6183 | default: | |
6184 | abort (); | |
6185 | } | |
6186 | if (mips_opts.micromips && brneg) | |
6187 | macro_build_branch_likely (br, brneg, call, ep, "s,t,p", sreg, treg); | |
6188 | else | |
6189 | macro_build (ep, br, "s,t,p", sreg, treg); | |
6190 | } | |
6191 | ||
252b5132 RH |
6192 | /* |
6193 | * Build macros | |
6194 | * This routine implements the seemingly endless macro or synthesized | |
6195 | * instructions and addressing modes in the mips assembly language. Many | |
6196 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 6197 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
6198 | * this verbose method. Others are not simple macros but are more like |
6199 | * optimizing code generation. | |
6200 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 6201 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
6202 | * The ensuing load upper instructions are ommited. This implies some kind |
6203 | * of global optimization. We currently only optimize within a single macro. | |
6204 | * For many of the load and store macros if the address is specified as a | |
6205 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
6206 | * first load register 'at' with zero and use it as the base register. The | |
6207 | * mips assembler simply uses register $zero. Just one tiny optimization | |
6208 | * we're missing. | |
6209 | */ | |
6210 | static void | |
17a2f251 | 6211 | macro (struct mips_cl_insn *ip) |
252b5132 | 6212 | { |
741fe287 MR |
6213 | unsigned int treg, sreg, dreg, breg; |
6214 | unsigned int tempreg; | |
252b5132 | 6215 | int mask; |
43841e91 | 6216 | int used_at = 0; |
df58fc94 | 6217 | expressionS label_expr; |
252b5132 | 6218 | expressionS expr1; |
df58fc94 | 6219 | expressionS *ep; |
252b5132 RH |
6220 | const char *s; |
6221 | const char *s2; | |
6222 | const char *fmt; | |
6223 | int likely = 0; | |
252b5132 | 6224 | int coproc = 0; |
df58fc94 | 6225 | int off12 = 0; |
1abe91b1 | 6226 | int call = 0; |
df58fc94 RS |
6227 | int jals = 0; |
6228 | int dbl = 0; | |
6229 | int imm = 0; | |
6230 | int ust = 0; | |
6231 | int lp = 0; | |
6232 | int ab = 0; | |
252b5132 | 6233 | int off; |
67c0d1eb | 6234 | offsetT maxnum; |
252b5132 | 6235 | bfd_reloc_code_real_type r; |
252b5132 RH |
6236 | int hold_mips_optimize; |
6237 | ||
9c2799c2 | 6238 | gas_assert (! mips_opts.mips16); |
252b5132 | 6239 | |
df58fc94 RS |
6240 | treg = EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
6241 | dreg = EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); | |
6242 | sreg = breg = EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); | |
252b5132 RH |
6243 | mask = ip->insn_mo->mask; |
6244 | ||
df58fc94 RS |
6245 | label_expr.X_op = O_constant; |
6246 | label_expr.X_op_symbol = NULL; | |
6247 | label_expr.X_add_symbol = NULL; | |
6248 | label_expr.X_add_number = 0; | |
6249 | ||
252b5132 RH |
6250 | expr1.X_op = O_constant; |
6251 | expr1.X_op_symbol = NULL; | |
6252 | expr1.X_add_symbol = NULL; | |
6253 | expr1.X_add_number = 1; | |
6254 | ||
6255 | switch (mask) | |
6256 | { | |
6257 | case M_DABS: | |
6258 | dbl = 1; | |
6259 | case M_ABS: | |
df58fc94 RS |
6260 | /* bgez $a0,1f |
6261 | move v0,$a0 | |
6262 | sub v0,$zero,$a0 | |
6263 | 1: | |
6264 | */ | |
252b5132 | 6265 | |
7d10b47d | 6266 | start_noreorder (); |
252b5132 | 6267 | |
df58fc94 RS |
6268 | if (mips_opts.micromips) |
6269 | micromips_label_expr (&label_expr); | |
6270 | else | |
6271 | label_expr.X_add_number = 8; | |
6272 | macro_build (&label_expr, "bgez", "s,p", sreg); | |
252b5132 | 6273 | if (dreg == sreg) |
a605d2b3 | 6274 | macro_build (NULL, "nop", ""); |
252b5132 | 6275 | else |
67c0d1eb RS |
6276 | move_register (dreg, sreg); |
6277 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); | |
df58fc94 RS |
6278 | if (mips_opts.micromips) |
6279 | micromips_add_label (); | |
252b5132 | 6280 | |
7d10b47d | 6281 | end_noreorder (); |
8fc2e39e | 6282 | break; |
252b5132 RH |
6283 | |
6284 | case M_ADD_I: | |
6285 | s = "addi"; | |
6286 | s2 = "add"; | |
6287 | goto do_addi; | |
6288 | case M_ADDU_I: | |
6289 | s = "addiu"; | |
6290 | s2 = "addu"; | |
6291 | goto do_addi; | |
6292 | case M_DADD_I: | |
6293 | dbl = 1; | |
6294 | s = "daddi"; | |
6295 | s2 = "dadd"; | |
df58fc94 RS |
6296 | if (!mips_opts.micromips) |
6297 | goto do_addi; | |
6298 | if (imm_expr.X_op == O_constant | |
6299 | && imm_expr.X_add_number >= -0x200 | |
6300 | && imm_expr.X_add_number < 0x200) | |
6301 | { | |
6302 | macro_build (NULL, s, "t,r,.", treg, sreg, imm_expr.X_add_number); | |
6303 | break; | |
6304 | } | |
6305 | goto do_addi_i; | |
252b5132 RH |
6306 | case M_DADDU_I: |
6307 | dbl = 1; | |
6308 | s = "daddiu"; | |
6309 | s2 = "daddu"; | |
6310 | do_addi: | |
6311 | if (imm_expr.X_op == O_constant | |
6312 | && imm_expr.X_add_number >= -0x8000 | |
6313 | && imm_expr.X_add_number < 0x8000) | |
6314 | { | |
67c0d1eb | 6315 | macro_build (&imm_expr, s, "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 6316 | break; |
252b5132 | 6317 | } |
df58fc94 | 6318 | do_addi_i: |
8fc2e39e | 6319 | used_at = 1; |
67c0d1eb RS |
6320 | load_register (AT, &imm_expr, dbl); |
6321 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
6322 | break; |
6323 | ||
6324 | case M_AND_I: | |
6325 | s = "andi"; | |
6326 | s2 = "and"; | |
6327 | goto do_bit; | |
6328 | case M_OR_I: | |
6329 | s = "ori"; | |
6330 | s2 = "or"; | |
6331 | goto do_bit; | |
6332 | case M_NOR_I: | |
6333 | s = ""; | |
6334 | s2 = "nor"; | |
6335 | goto do_bit; | |
6336 | case M_XOR_I: | |
6337 | s = "xori"; | |
6338 | s2 = "xor"; | |
6339 | do_bit: | |
6340 | if (imm_expr.X_op == O_constant | |
6341 | && imm_expr.X_add_number >= 0 | |
6342 | && imm_expr.X_add_number < 0x10000) | |
6343 | { | |
6344 | if (mask != M_NOR_I) | |
67c0d1eb | 6345 | macro_build (&imm_expr, s, "t,r,i", treg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
6346 | else |
6347 | { | |
67c0d1eb RS |
6348 | macro_build (&imm_expr, "ori", "t,r,i", |
6349 | treg, sreg, BFD_RELOC_LO16); | |
6350 | macro_build (NULL, "nor", "d,v,t", treg, treg, 0); | |
252b5132 | 6351 | } |
8fc2e39e | 6352 | break; |
252b5132 RH |
6353 | } |
6354 | ||
8fc2e39e | 6355 | used_at = 1; |
67c0d1eb RS |
6356 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
6357 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
6358 | break; |
6359 | ||
8b082fb1 TS |
6360 | case M_BALIGN: |
6361 | switch (imm_expr.X_add_number) | |
6362 | { | |
6363 | case 0: | |
6364 | macro_build (NULL, "nop", ""); | |
6365 | break; | |
6366 | case 2: | |
6367 | macro_build (NULL, "packrl.ph", "d,s,t", treg, treg, sreg); | |
6368 | break; | |
6369 | default: | |
6370 | macro_build (NULL, "balign", "t,s,2", treg, sreg, | |
90ecf173 | 6371 | (int) imm_expr.X_add_number); |
8b082fb1 TS |
6372 | break; |
6373 | } | |
6374 | break; | |
6375 | ||
df58fc94 RS |
6376 | case M_BC1FL: |
6377 | case M_BC1TL: | |
6378 | case M_BC2FL: | |
6379 | case M_BC2TL: | |
6380 | gas_assert (mips_opts.micromips); | |
6381 | macro_build_branch_ccl (mask, &offset_expr, | |
6382 | EXTRACT_OPERAND (1, BCC, *ip)); | |
6383 | break; | |
6384 | ||
252b5132 | 6385 | case M_BEQ_I: |
252b5132 | 6386 | case M_BEQL_I: |
252b5132 | 6387 | case M_BNE_I: |
252b5132 | 6388 | case M_BNEL_I: |
252b5132 | 6389 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) |
df58fc94 RS |
6390 | treg = 0; |
6391 | else | |
252b5132 | 6392 | { |
df58fc94 RS |
6393 | treg = AT; |
6394 | used_at = 1; | |
6395 | load_register (treg, &imm_expr, HAVE_64BIT_GPRS); | |
252b5132 | 6396 | } |
df58fc94 RS |
6397 | /* Fall through. */ |
6398 | case M_BEQL: | |
6399 | case M_BNEL: | |
6400 | macro_build_branch_rsrt (mask, &offset_expr, sreg, treg); | |
252b5132 RH |
6401 | break; |
6402 | ||
6403 | case M_BGEL: | |
6404 | likely = 1; | |
6405 | case M_BGE: | |
6406 | if (treg == 0) | |
df58fc94 RS |
6407 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, sreg); |
6408 | else if (sreg == 0) | |
6409 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, treg); | |
6410 | else | |
252b5132 | 6411 | { |
df58fc94 RS |
6412 | used_at = 1; |
6413 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); | |
6414 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6415 | &offset_expr, AT, ZERO); | |
252b5132 | 6416 | } |
df58fc94 RS |
6417 | break; |
6418 | ||
6419 | case M_BGEZL: | |
6420 | case M_BGEZALL: | |
6421 | case M_BGTZL: | |
6422 | case M_BLEZL: | |
6423 | case M_BLTZL: | |
6424 | case M_BLTZALL: | |
6425 | macro_build_branch_rs (mask, &offset_expr, sreg); | |
252b5132 RH |
6426 | break; |
6427 | ||
6428 | case M_BGTL_I: | |
6429 | likely = 1; | |
6430 | case M_BGT_I: | |
90ecf173 | 6431 | /* Check for > max integer. */ |
252b5132 | 6432 | maxnum = 0x7fffffff; |
ca4e0257 | 6433 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6434 | { |
6435 | maxnum <<= 16; | |
6436 | maxnum |= 0xffff; | |
6437 | maxnum <<= 16; | |
6438 | maxnum |= 0xffff; | |
6439 | } | |
6440 | if (imm_expr.X_op == O_constant | |
6441 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 6442 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6443 | { |
6444 | do_false: | |
90ecf173 | 6445 | /* Result is always false. */ |
252b5132 | 6446 | if (! likely) |
a605d2b3 | 6447 | macro_build (NULL, "nop", ""); |
252b5132 | 6448 | else |
df58fc94 | 6449 | macro_build_branch_rsrt (M_BNEL, &offset_expr, ZERO, ZERO); |
8fc2e39e | 6450 | break; |
252b5132 RH |
6451 | } |
6452 | if (imm_expr.X_op != O_constant) | |
6453 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6454 | ++imm_expr.X_add_number; |
252b5132 RH |
6455 | /* FALLTHROUGH */ |
6456 | case M_BGE_I: | |
6457 | case M_BGEL_I: | |
6458 | if (mask == M_BGEL_I) | |
6459 | likely = 1; | |
6460 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6461 | { | |
df58fc94 RS |
6462 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, |
6463 | &offset_expr, sreg); | |
8fc2e39e | 6464 | break; |
252b5132 RH |
6465 | } |
6466 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6467 | { | |
df58fc94 RS |
6468 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, |
6469 | &offset_expr, sreg); | |
8fc2e39e | 6470 | break; |
252b5132 RH |
6471 | } |
6472 | maxnum = 0x7fffffff; | |
ca4e0257 | 6473 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6474 | { |
6475 | maxnum <<= 16; | |
6476 | maxnum |= 0xffff; | |
6477 | maxnum <<= 16; | |
6478 | maxnum |= 0xffff; | |
6479 | } | |
6480 | maxnum = - maxnum - 1; | |
6481 | if (imm_expr.X_op == O_constant | |
6482 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 6483 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6484 | { |
6485 | do_true: | |
6486 | /* result is always true */ | |
6487 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
67c0d1eb | 6488 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 6489 | break; |
252b5132 | 6490 | } |
8fc2e39e | 6491 | used_at = 1; |
67c0d1eb | 6492 | set_at (sreg, 0); |
df58fc94 RS |
6493 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
6494 | &offset_expr, AT, ZERO); | |
252b5132 RH |
6495 | break; |
6496 | ||
6497 | case M_BGEUL: | |
6498 | likely = 1; | |
6499 | case M_BGEU: | |
6500 | if (treg == 0) | |
6501 | goto do_true; | |
df58fc94 RS |
6502 | else if (sreg == 0) |
6503 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6504 | &offset_expr, ZERO, treg); | |
6505 | else | |
252b5132 | 6506 | { |
df58fc94 RS |
6507 | used_at = 1; |
6508 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); | |
6509 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6510 | &offset_expr, AT, ZERO); | |
252b5132 | 6511 | } |
252b5132 RH |
6512 | break; |
6513 | ||
6514 | case M_BGTUL_I: | |
6515 | likely = 1; | |
6516 | case M_BGTU_I: | |
6517 | if (sreg == 0 | |
ca4e0257 | 6518 | || (HAVE_32BIT_GPRS |
252b5132 | 6519 | && imm_expr.X_op == O_constant |
f01dc953 | 6520 | && imm_expr.X_add_number == -1)) |
252b5132 RH |
6521 | goto do_false; |
6522 | if (imm_expr.X_op != O_constant) | |
6523 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6524 | ++imm_expr.X_add_number; |
252b5132 RH |
6525 | /* FALLTHROUGH */ |
6526 | case M_BGEU_I: | |
6527 | case M_BGEUL_I: | |
6528 | if (mask == M_BGEUL_I) | |
6529 | likely = 1; | |
6530 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6531 | goto do_true; | |
df58fc94 RS |
6532 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) |
6533 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6534 | &offset_expr, sreg, ZERO); | |
6535 | else | |
252b5132 | 6536 | { |
df58fc94 RS |
6537 | used_at = 1; |
6538 | set_at (sreg, 1); | |
6539 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6540 | &offset_expr, AT, ZERO); | |
252b5132 | 6541 | } |
252b5132 RH |
6542 | break; |
6543 | ||
6544 | case M_BGTL: | |
6545 | likely = 1; | |
6546 | case M_BGT: | |
6547 | if (treg == 0) | |
df58fc94 RS |
6548 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, sreg); |
6549 | else if (sreg == 0) | |
6550 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, treg); | |
6551 | else | |
252b5132 | 6552 | { |
df58fc94 RS |
6553 | used_at = 1; |
6554 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); | |
6555 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6556 | &offset_expr, AT, ZERO); | |
252b5132 | 6557 | } |
252b5132 RH |
6558 | break; |
6559 | ||
6560 | case M_BGTUL: | |
6561 | likely = 1; | |
6562 | case M_BGTU: | |
6563 | if (treg == 0) | |
df58fc94 RS |
6564 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
6565 | &offset_expr, sreg, ZERO); | |
6566 | else if (sreg == 0) | |
6567 | goto do_false; | |
6568 | else | |
252b5132 | 6569 | { |
df58fc94 RS |
6570 | used_at = 1; |
6571 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); | |
6572 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6573 | &offset_expr, AT, ZERO); | |
252b5132 | 6574 | } |
252b5132 RH |
6575 | break; |
6576 | ||
6577 | case M_BLEL: | |
6578 | likely = 1; | |
6579 | case M_BLE: | |
6580 | if (treg == 0) | |
df58fc94 RS |
6581 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, sreg); |
6582 | else if (sreg == 0) | |
6583 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, treg); | |
6584 | else | |
252b5132 | 6585 | { |
df58fc94 RS |
6586 | used_at = 1; |
6587 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); | |
6588 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6589 | &offset_expr, AT, ZERO); | |
252b5132 | 6590 | } |
252b5132 RH |
6591 | break; |
6592 | ||
6593 | case M_BLEL_I: | |
6594 | likely = 1; | |
6595 | case M_BLE_I: | |
6596 | maxnum = 0x7fffffff; | |
ca4e0257 | 6597 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6598 | { |
6599 | maxnum <<= 16; | |
6600 | maxnum |= 0xffff; | |
6601 | maxnum <<= 16; | |
6602 | maxnum |= 0xffff; | |
6603 | } | |
6604 | if (imm_expr.X_op == O_constant | |
6605 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 6606 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6607 | goto do_true; |
6608 | if (imm_expr.X_op != O_constant) | |
6609 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6610 | ++imm_expr.X_add_number; |
252b5132 RH |
6611 | /* FALLTHROUGH */ |
6612 | case M_BLT_I: | |
6613 | case M_BLTL_I: | |
6614 | if (mask == M_BLTL_I) | |
6615 | likely = 1; | |
6616 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
df58fc94 RS |
6617 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, sreg); |
6618 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6619 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, sreg); | |
6620 | else | |
252b5132 | 6621 | { |
df58fc94 RS |
6622 | used_at = 1; |
6623 | set_at (sreg, 0); | |
6624 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6625 | &offset_expr, AT, ZERO); | |
252b5132 | 6626 | } |
252b5132 RH |
6627 | break; |
6628 | ||
6629 | case M_BLEUL: | |
6630 | likely = 1; | |
6631 | case M_BLEU: | |
6632 | if (treg == 0) | |
df58fc94 RS |
6633 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
6634 | &offset_expr, sreg, ZERO); | |
6635 | else if (sreg == 0) | |
6636 | goto do_true; | |
6637 | else | |
252b5132 | 6638 | { |
df58fc94 RS |
6639 | used_at = 1; |
6640 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); | |
6641 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6642 | &offset_expr, AT, ZERO); | |
252b5132 | 6643 | } |
252b5132 RH |
6644 | break; |
6645 | ||
6646 | case M_BLEUL_I: | |
6647 | likely = 1; | |
6648 | case M_BLEU_I: | |
6649 | if (sreg == 0 | |
ca4e0257 | 6650 | || (HAVE_32BIT_GPRS |
252b5132 | 6651 | && imm_expr.X_op == O_constant |
f01dc953 | 6652 | && imm_expr.X_add_number == -1)) |
252b5132 RH |
6653 | goto do_true; |
6654 | if (imm_expr.X_op != O_constant) | |
6655 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6656 | ++imm_expr.X_add_number; |
252b5132 RH |
6657 | /* FALLTHROUGH */ |
6658 | case M_BLTU_I: | |
6659 | case M_BLTUL_I: | |
6660 | if (mask == M_BLTUL_I) | |
6661 | likely = 1; | |
6662 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6663 | goto do_false; | |
df58fc94 RS |
6664 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) |
6665 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6666 | &offset_expr, sreg, ZERO); | |
6667 | else | |
252b5132 | 6668 | { |
df58fc94 RS |
6669 | used_at = 1; |
6670 | set_at (sreg, 1); | |
6671 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6672 | &offset_expr, AT, ZERO); | |
252b5132 | 6673 | } |
252b5132 RH |
6674 | break; |
6675 | ||
6676 | case M_BLTL: | |
6677 | likely = 1; | |
6678 | case M_BLT: | |
6679 | if (treg == 0) | |
df58fc94 RS |
6680 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, sreg); |
6681 | else if (sreg == 0) | |
6682 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, treg); | |
6683 | else | |
252b5132 | 6684 | { |
df58fc94 RS |
6685 | used_at = 1; |
6686 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); | |
6687 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6688 | &offset_expr, AT, ZERO); | |
252b5132 | 6689 | } |
252b5132 RH |
6690 | break; |
6691 | ||
6692 | case M_BLTUL: | |
6693 | likely = 1; | |
6694 | case M_BLTU: | |
6695 | if (treg == 0) | |
6696 | goto do_false; | |
df58fc94 RS |
6697 | else if (sreg == 0) |
6698 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6699 | &offset_expr, ZERO, treg); | |
6700 | else | |
252b5132 | 6701 | { |
df58fc94 RS |
6702 | used_at = 1; |
6703 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); | |
6704 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6705 | &offset_expr, AT, ZERO); | |
252b5132 | 6706 | } |
252b5132 RH |
6707 | break; |
6708 | ||
5f74bc13 CD |
6709 | case M_DEXT: |
6710 | { | |
d5818fca MR |
6711 | /* Use unsigned arithmetic. */ |
6712 | addressT pos; | |
6713 | addressT size; | |
5f74bc13 | 6714 | |
90ecf173 | 6715 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) |
5f74bc13 CD |
6716 | { |
6717 | as_bad (_("Unsupported large constant")); | |
6718 | pos = size = 1; | |
6719 | } | |
6720 | else | |
6721 | { | |
d5818fca MR |
6722 | pos = imm_expr.X_add_number; |
6723 | size = imm2_expr.X_add_number; | |
5f74bc13 CD |
6724 | } |
6725 | ||
6726 | if (pos > 63) | |
6727 | { | |
d5818fca | 6728 | as_bad (_("Improper position (%lu)"), (unsigned long) pos); |
5f74bc13 CD |
6729 | pos = 1; |
6730 | } | |
90ecf173 | 6731 | if (size == 0 || size > 64 || (pos + size - 1) > 63) |
5f74bc13 CD |
6732 | { |
6733 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
d5818fca | 6734 | (unsigned long) size, (unsigned long) pos); |
5f74bc13 CD |
6735 | size = 1; |
6736 | } | |
6737 | ||
6738 | if (size <= 32 && pos < 32) | |
6739 | { | |
6740 | s = "dext"; | |
6741 | fmt = "t,r,+A,+C"; | |
6742 | } | |
6743 | else if (size <= 32) | |
6744 | { | |
6745 | s = "dextu"; | |
6746 | fmt = "t,r,+E,+H"; | |
6747 | } | |
6748 | else | |
6749 | { | |
6750 | s = "dextm"; | |
6751 | fmt = "t,r,+A,+G"; | |
6752 | } | |
d5818fca MR |
6753 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, (int) pos, |
6754 | (int) (size - 1)); | |
5f74bc13 | 6755 | } |
8fc2e39e | 6756 | break; |
5f74bc13 CD |
6757 | |
6758 | case M_DINS: | |
6759 | { | |
d5818fca MR |
6760 | /* Use unsigned arithmetic. */ |
6761 | addressT pos; | |
6762 | addressT size; | |
5f74bc13 | 6763 | |
90ecf173 | 6764 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) |
5f74bc13 CD |
6765 | { |
6766 | as_bad (_("Unsupported large constant")); | |
6767 | pos = size = 1; | |
6768 | } | |
6769 | else | |
6770 | { | |
d5818fca MR |
6771 | pos = imm_expr.X_add_number; |
6772 | size = imm2_expr.X_add_number; | |
5f74bc13 CD |
6773 | } |
6774 | ||
6775 | if (pos > 63) | |
6776 | { | |
d5818fca | 6777 | as_bad (_("Improper position (%lu)"), (unsigned long) pos); |
5f74bc13 CD |
6778 | pos = 1; |
6779 | } | |
90ecf173 | 6780 | if (size == 0 || size > 64 || (pos + size - 1) > 63) |
5f74bc13 CD |
6781 | { |
6782 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
d5818fca | 6783 | (unsigned long) size, (unsigned long) pos); |
5f74bc13 CD |
6784 | size = 1; |
6785 | } | |
6786 | ||
6787 | if (pos < 32 && (pos + size - 1) < 32) | |
6788 | { | |
6789 | s = "dins"; | |
6790 | fmt = "t,r,+A,+B"; | |
6791 | } | |
6792 | else if (pos >= 32) | |
6793 | { | |
6794 | s = "dinsu"; | |
6795 | fmt = "t,r,+E,+F"; | |
6796 | } | |
6797 | else | |
6798 | { | |
6799 | s = "dinsm"; | |
6800 | fmt = "t,r,+A,+F"; | |
6801 | } | |
750bdd57 AS |
6802 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, (int) pos, |
6803 | (int) (pos + size - 1)); | |
5f74bc13 | 6804 | } |
8fc2e39e | 6805 | break; |
5f74bc13 | 6806 | |
252b5132 RH |
6807 | case M_DDIV_3: |
6808 | dbl = 1; | |
6809 | case M_DIV_3: | |
6810 | s = "mflo"; | |
6811 | goto do_div3; | |
6812 | case M_DREM_3: | |
6813 | dbl = 1; | |
6814 | case M_REM_3: | |
6815 | s = "mfhi"; | |
6816 | do_div3: | |
6817 | if (treg == 0) | |
6818 | { | |
6819 | as_warn (_("Divide by zero.")); | |
6820 | if (mips_trap) | |
df58fc94 | 6821 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 6822 | else |
df58fc94 | 6823 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 6824 | break; |
252b5132 RH |
6825 | } |
6826 | ||
7d10b47d | 6827 | start_noreorder (); |
252b5132 RH |
6828 | if (mips_trap) |
6829 | { | |
df58fc94 | 6830 | macro_build (NULL, "teq", TRAP_FMT, treg, ZERO, 7); |
67c0d1eb | 6831 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
252b5132 RH |
6832 | } |
6833 | else | |
6834 | { | |
df58fc94 RS |
6835 | if (mips_opts.micromips) |
6836 | micromips_label_expr (&label_expr); | |
6837 | else | |
6838 | label_expr.X_add_number = 8; | |
6839 | macro_build (&label_expr, "bne", "s,t,p", treg, ZERO); | |
67c0d1eb | 6840 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
df58fc94 RS |
6841 | macro_build (NULL, "break", BRK_FMT, 7); |
6842 | if (mips_opts.micromips) | |
6843 | micromips_add_label (); | |
252b5132 RH |
6844 | } |
6845 | expr1.X_add_number = -1; | |
8fc2e39e | 6846 | used_at = 1; |
f6a22291 | 6847 | load_register (AT, &expr1, dbl); |
df58fc94 RS |
6848 | if (mips_opts.micromips) |
6849 | micromips_label_expr (&label_expr); | |
6850 | else | |
6851 | label_expr.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); | |
6852 | macro_build (&label_expr, "bne", "s,t,p", treg, AT); | |
252b5132 RH |
6853 | if (dbl) |
6854 | { | |
6855 | expr1.X_add_number = 1; | |
f6a22291 | 6856 | load_register (AT, &expr1, dbl); |
df58fc94 | 6857 | macro_build (NULL, "dsll32", SHFT_FMT, AT, AT, 31); |
252b5132 RH |
6858 | } |
6859 | else | |
6860 | { | |
6861 | expr1.X_add_number = 0x80000000; | |
df58fc94 | 6862 | macro_build (&expr1, "lui", LUI_FMT, AT, BFD_RELOC_HI16); |
252b5132 RH |
6863 | } |
6864 | if (mips_trap) | |
6865 | { | |
df58fc94 | 6866 | macro_build (NULL, "teq", TRAP_FMT, sreg, AT, 6); |
252b5132 RH |
6867 | /* We want to close the noreorder block as soon as possible, so |
6868 | that later insns are available for delay slot filling. */ | |
7d10b47d | 6869 | end_noreorder (); |
252b5132 RH |
6870 | } |
6871 | else | |
6872 | { | |
df58fc94 RS |
6873 | if (mips_opts.micromips) |
6874 | micromips_label_expr (&label_expr); | |
6875 | else | |
6876 | label_expr.X_add_number = 8; | |
6877 | macro_build (&label_expr, "bne", "s,t,p", sreg, AT); | |
a605d2b3 | 6878 | macro_build (NULL, "nop", ""); |
252b5132 RH |
6879 | |
6880 | /* We want to close the noreorder block as soon as possible, so | |
6881 | that later insns are available for delay slot filling. */ | |
7d10b47d | 6882 | end_noreorder (); |
252b5132 | 6883 | |
df58fc94 | 6884 | macro_build (NULL, "break", BRK_FMT, 6); |
252b5132 | 6885 | } |
df58fc94 RS |
6886 | if (mips_opts.micromips) |
6887 | micromips_add_label (); | |
6888 | macro_build (NULL, s, MFHL_FMT, dreg); | |
252b5132 RH |
6889 | break; |
6890 | ||
6891 | case M_DIV_3I: | |
6892 | s = "div"; | |
6893 | s2 = "mflo"; | |
6894 | goto do_divi; | |
6895 | case M_DIVU_3I: | |
6896 | s = "divu"; | |
6897 | s2 = "mflo"; | |
6898 | goto do_divi; | |
6899 | case M_REM_3I: | |
6900 | s = "div"; | |
6901 | s2 = "mfhi"; | |
6902 | goto do_divi; | |
6903 | case M_REMU_3I: | |
6904 | s = "divu"; | |
6905 | s2 = "mfhi"; | |
6906 | goto do_divi; | |
6907 | case M_DDIV_3I: | |
6908 | dbl = 1; | |
6909 | s = "ddiv"; | |
6910 | s2 = "mflo"; | |
6911 | goto do_divi; | |
6912 | case M_DDIVU_3I: | |
6913 | dbl = 1; | |
6914 | s = "ddivu"; | |
6915 | s2 = "mflo"; | |
6916 | goto do_divi; | |
6917 | case M_DREM_3I: | |
6918 | dbl = 1; | |
6919 | s = "ddiv"; | |
6920 | s2 = "mfhi"; | |
6921 | goto do_divi; | |
6922 | case M_DREMU_3I: | |
6923 | dbl = 1; | |
6924 | s = "ddivu"; | |
6925 | s2 = "mfhi"; | |
6926 | do_divi: | |
6927 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6928 | { | |
6929 | as_warn (_("Divide by zero.")); | |
6930 | if (mips_trap) | |
df58fc94 | 6931 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 6932 | else |
df58fc94 | 6933 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 6934 | break; |
252b5132 RH |
6935 | } |
6936 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6937 | { | |
6938 | if (strcmp (s2, "mflo") == 0) | |
67c0d1eb | 6939 | move_register (dreg, sreg); |
252b5132 | 6940 | else |
c80c840e | 6941 | move_register (dreg, ZERO); |
8fc2e39e | 6942 | break; |
252b5132 RH |
6943 | } |
6944 | if (imm_expr.X_op == O_constant | |
6945 | && imm_expr.X_add_number == -1 | |
6946 | && s[strlen (s) - 1] != 'u') | |
6947 | { | |
6948 | if (strcmp (s2, "mflo") == 0) | |
6949 | { | |
67c0d1eb | 6950 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", dreg, sreg); |
252b5132 RH |
6951 | } |
6952 | else | |
c80c840e | 6953 | move_register (dreg, ZERO); |
8fc2e39e | 6954 | break; |
252b5132 RH |
6955 | } |
6956 | ||
8fc2e39e | 6957 | used_at = 1; |
67c0d1eb RS |
6958 | load_register (AT, &imm_expr, dbl); |
6959 | macro_build (NULL, s, "z,s,t", sreg, AT); | |
df58fc94 | 6960 | macro_build (NULL, s2, MFHL_FMT, dreg); |
252b5132 RH |
6961 | break; |
6962 | ||
6963 | case M_DIVU_3: | |
6964 | s = "divu"; | |
6965 | s2 = "mflo"; | |
6966 | goto do_divu3; | |
6967 | case M_REMU_3: | |
6968 | s = "divu"; | |
6969 | s2 = "mfhi"; | |
6970 | goto do_divu3; | |
6971 | case M_DDIVU_3: | |
6972 | s = "ddivu"; | |
6973 | s2 = "mflo"; | |
6974 | goto do_divu3; | |
6975 | case M_DREMU_3: | |
6976 | s = "ddivu"; | |
6977 | s2 = "mfhi"; | |
6978 | do_divu3: | |
7d10b47d | 6979 | start_noreorder (); |
252b5132 RH |
6980 | if (mips_trap) |
6981 | { | |
df58fc94 | 6982 | macro_build (NULL, "teq", TRAP_FMT, treg, ZERO, 7); |
67c0d1eb | 6983 | macro_build (NULL, s, "z,s,t", sreg, treg); |
252b5132 RH |
6984 | /* We want to close the noreorder block as soon as possible, so |
6985 | that later insns are available for delay slot filling. */ | |
7d10b47d | 6986 | end_noreorder (); |
252b5132 RH |
6987 | } |
6988 | else | |
6989 | { | |
df58fc94 RS |
6990 | if (mips_opts.micromips) |
6991 | micromips_label_expr (&label_expr); | |
6992 | else | |
6993 | label_expr.X_add_number = 8; | |
6994 | macro_build (&label_expr, "bne", "s,t,p", treg, ZERO); | |
67c0d1eb | 6995 | macro_build (NULL, s, "z,s,t", sreg, treg); |
252b5132 RH |
6996 | |
6997 | /* We want to close the noreorder block as soon as possible, so | |
6998 | that later insns are available for delay slot filling. */ | |
7d10b47d | 6999 | end_noreorder (); |
df58fc94 RS |
7000 | macro_build (NULL, "break", BRK_FMT, 7); |
7001 | if (mips_opts.micromips) | |
7002 | micromips_add_label (); | |
252b5132 | 7003 | } |
df58fc94 | 7004 | macro_build (NULL, s2, MFHL_FMT, dreg); |
8fc2e39e | 7005 | break; |
252b5132 | 7006 | |
1abe91b1 MR |
7007 | case M_DLCA_AB: |
7008 | dbl = 1; | |
7009 | case M_LCA_AB: | |
7010 | call = 1; | |
7011 | goto do_la; | |
252b5132 RH |
7012 | case M_DLA_AB: |
7013 | dbl = 1; | |
7014 | case M_LA_AB: | |
1abe91b1 | 7015 | do_la: |
252b5132 RH |
7016 | /* Load the address of a symbol into a register. If breg is not |
7017 | zero, we then add a base register to it. */ | |
7018 | ||
3bec30a8 TS |
7019 | if (dbl && HAVE_32BIT_GPRS) |
7020 | as_warn (_("dla used to load 32-bit register")); | |
7021 | ||
90ecf173 | 7022 | if (!dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
7023 | as_warn (_("la used to load 64-bit address")); |
7024 | ||
0c11417f MR |
7025 | if (offset_expr.X_op == O_constant |
7026 | && offset_expr.X_add_number >= -0x8000 | |
7027 | && offset_expr.X_add_number < 0x8000) | |
7028 | { | |
aed1a261 | 7029 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
17a2f251 | 7030 | "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7031 | break; |
0c11417f MR |
7032 | } |
7033 | ||
741fe287 | 7034 | if (mips_opts.at && (treg == breg)) |
afdbd6d0 CD |
7035 | { |
7036 | tempreg = AT; | |
7037 | used_at = 1; | |
7038 | } | |
7039 | else | |
7040 | { | |
7041 | tempreg = treg; | |
afdbd6d0 CD |
7042 | } |
7043 | ||
252b5132 RH |
7044 | if (offset_expr.X_op != O_symbol |
7045 | && offset_expr.X_op != O_constant) | |
7046 | { | |
f71d0d44 | 7047 | as_bad (_("Expression too complex")); |
252b5132 RH |
7048 | offset_expr.X_op = O_constant; |
7049 | } | |
7050 | ||
252b5132 | 7051 | if (offset_expr.X_op == O_constant) |
aed1a261 | 7052 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
7053 | else if (mips_pic == NO_PIC) |
7054 | { | |
d6bc6245 | 7055 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 7056 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
7057 | Otherwise we want |
7058 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
7059 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7060 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 7061 | so we may as well always use the latter form. |
76b3015f | 7062 | |
6caf9ef4 TS |
7063 | With 64bit address space and a usable $at we want |
7064 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
7065 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
7066 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
7067 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
7068 | dsll32 $tempreg,0 | |
7069 | daddu $tempreg,$tempreg,$at | |
7070 | ||
7071 | If $at is already in use, we use a path which is suboptimal | |
7072 | on superscalar processors. | |
7073 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
7074 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
7075 | dsll $tempreg,16 | |
7076 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
7077 | dsll $tempreg,16 | |
7078 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
7079 | ||
7080 | For GP relative symbols in 64bit address space we can use | |
7081 | the same sequence as in 32bit address space. */ | |
aed1a261 | 7082 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 7083 | { |
6caf9ef4 TS |
7084 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
7085 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
7086 | { | |
7087 | relax_start (offset_expr.X_add_symbol); | |
7088 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7089 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
7090 | relax_switch (); | |
7091 | } | |
d6bc6245 | 7092 | |
741fe287 | 7093 | if (used_at == 0 && mips_opts.at) |
98d3f06f | 7094 | { |
df58fc94 | 7095 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7096 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 7097 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7098 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 7099 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7100 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 7101 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7102 | AT, AT, BFD_RELOC_LO16); |
df58fc94 | 7103 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb | 7104 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
98d3f06f KH |
7105 | used_at = 1; |
7106 | } | |
7107 | else | |
7108 | { | |
df58fc94 | 7109 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7110 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 7111 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7112 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
df58fc94 | 7113 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 7114 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7115 | tempreg, tempreg, BFD_RELOC_HI16_S); |
df58fc94 | 7116 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 7117 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7118 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 7119 | } |
6caf9ef4 TS |
7120 | |
7121 | if (mips_relax.sequence) | |
7122 | relax_end (); | |
98d3f06f KH |
7123 | } |
7124 | else | |
7125 | { | |
7126 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 7127 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 7128 | { |
4d7206a2 | 7129 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7130 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7131 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 7132 | relax_switch (); |
98d3f06f | 7133 | } |
6943caf0 | 7134 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
f71d0d44 | 7135 | as_bad (_("Offset too large")); |
67c0d1eb RS |
7136 | macro_build_lui (&offset_expr, tempreg); |
7137 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7138 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
7139 | if (mips_relax.sequence) |
7140 | relax_end (); | |
98d3f06f | 7141 | } |
252b5132 | 7142 | } |
0a44bf69 | 7143 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 7144 | { |
9117d219 NC |
7145 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
7146 | ||
252b5132 RH |
7147 | /* If this is a reference to an external symbol, and there |
7148 | is no constant, we want | |
7149 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 7150 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 7151 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
7152 | For a local symbol, we want |
7153 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7154 | nop | |
7155 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7156 | ||
7157 | If we have a small constant, and this is a reference to | |
7158 | an external symbol, we want | |
7159 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7160 | nop | |
7161 | addiu $tempreg,$tempreg,<constant> | |
7162 | For a local symbol, we want the same instruction | |
7163 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
7164 | addiu instruction. | |
7165 | ||
7166 | If we have a large constant, and this is a reference to | |
7167 | an external symbol, we want | |
7168 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7169 | lui $at,<hiconstant> | |
7170 | addiu $at,$at,<loconstant> | |
7171 | addu $tempreg,$tempreg,$at | |
7172 | For a local symbol, we want the same instruction | |
7173 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 7174 | addiu instruction. |
ed6fb7bd SC |
7175 | */ |
7176 | ||
4d7206a2 | 7177 | if (offset_expr.X_add_number == 0) |
252b5132 | 7178 | { |
0a44bf69 RS |
7179 | if (mips_pic == SVR4_PIC |
7180 | && breg == 0 | |
7181 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
7182 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
7183 | ||
7184 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
7185 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7186 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 7187 | if (breg != 0) |
252b5132 RH |
7188 | { |
7189 | /* We're going to put in an addu instruction using | |
7190 | tempreg, so we may as well insert the nop right | |
7191 | now. */ | |
269137b2 | 7192 | load_delay_nop (); |
252b5132 | 7193 | } |
4d7206a2 | 7194 | relax_switch (); |
67c0d1eb RS |
7195 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7196 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 7197 | load_delay_nop (); |
67c0d1eb RS |
7198 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7199 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 7200 | relax_end (); |
252b5132 RH |
7201 | /* FIXME: If breg == 0, and the next instruction uses |
7202 | $tempreg, then if this variant case is used an extra | |
7203 | nop will be generated. */ | |
7204 | } | |
4d7206a2 RS |
7205 | else if (offset_expr.X_add_number >= -0x8000 |
7206 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 7207 | { |
67c0d1eb | 7208 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 7209 | load_delay_nop (); |
67c0d1eb | 7210 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
7211 | } |
7212 | else | |
7213 | { | |
4d7206a2 RS |
7214 | expr1.X_add_number = offset_expr.X_add_number; |
7215 | offset_expr.X_add_number = | |
7216 | ((offset_expr.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
67c0d1eb | 7217 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 7218 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
7219 | /* If we are going to add in a base register, and the |
7220 | target register and the base register are the same, | |
7221 | then we are using AT as a temporary register. Since | |
7222 | we want to load the constant into AT, we add our | |
7223 | current AT (from the global offset table) and the | |
7224 | register into the register now, and pretend we were | |
7225 | not using a base register. */ | |
67c0d1eb | 7226 | if (breg == treg) |
252b5132 | 7227 | { |
269137b2 | 7228 | load_delay_nop (); |
67c0d1eb | 7229 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7230 | treg, AT, breg); |
252b5132 RH |
7231 | breg = 0; |
7232 | tempreg = treg; | |
252b5132 | 7233 | } |
f6a22291 | 7234 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
7235 | used_at = 1; |
7236 | } | |
7237 | } | |
0a44bf69 | 7238 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 7239 | { |
67c0d1eb | 7240 | int add_breg_early = 0; |
f5040a92 AO |
7241 | |
7242 | /* If this is a reference to an external, and there is no | |
7243 | constant, or local symbol (*), with or without a | |
7244 | constant, we want | |
7245 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 7246 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
7247 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
7248 | ||
7249 | If we have a small constant, and this is a reference to | |
7250 | an external symbol, we want | |
7251 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
7252 | addiu $tempreg,$tempreg,<constant> | |
7253 | ||
7254 | If we have a large constant, and this is a reference to | |
7255 | an external symbol, we want | |
7256 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
7257 | lui $at,<hiconstant> | |
7258 | addiu $at,$at,<loconstant> | |
7259 | addu $tempreg,$tempreg,$at | |
7260 | ||
7261 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
7262 | local symbols, even though it introduces an additional | |
7263 | instruction. */ | |
7264 | ||
f5040a92 AO |
7265 | if (offset_expr.X_add_number) |
7266 | { | |
4d7206a2 | 7267 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
7268 | offset_expr.X_add_number = 0; |
7269 | ||
4d7206a2 | 7270 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7271 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7272 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
7273 | |
7274 | if (expr1.X_add_number >= -0x8000 | |
7275 | && expr1.X_add_number < 0x8000) | |
7276 | { | |
67c0d1eb RS |
7277 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
7278 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 7279 | } |
ecd13cd3 | 7280 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 7281 | { |
f5040a92 AO |
7282 | /* If we are going to add in a base register, and the |
7283 | target register and the base register are the same, | |
7284 | then we are using AT as a temporary register. Since | |
7285 | we want to load the constant into AT, we add our | |
7286 | current AT (from the global offset table) and the | |
7287 | register into the register now, and pretend we were | |
7288 | not using a base register. */ | |
7289 | if (breg != treg) | |
7290 | dreg = tempreg; | |
7291 | else | |
7292 | { | |
9c2799c2 | 7293 | gas_assert (tempreg == AT); |
67c0d1eb RS |
7294 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
7295 | treg, AT, breg); | |
f5040a92 | 7296 | dreg = treg; |
67c0d1eb | 7297 | add_breg_early = 1; |
f5040a92 AO |
7298 | } |
7299 | ||
f6a22291 | 7300 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7301 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7302 | dreg, dreg, AT); |
f5040a92 | 7303 | |
f5040a92 AO |
7304 | used_at = 1; |
7305 | } | |
7306 | else | |
7307 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
7308 | ||
4d7206a2 | 7309 | relax_switch (); |
f5040a92 AO |
7310 | offset_expr.X_add_number = expr1.X_add_number; |
7311 | ||
67c0d1eb RS |
7312 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7313 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
7314 | if (add_breg_early) | |
f5040a92 | 7315 | { |
67c0d1eb | 7316 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
f899b4b8 | 7317 | treg, tempreg, breg); |
f5040a92 AO |
7318 | breg = 0; |
7319 | tempreg = treg; | |
7320 | } | |
4d7206a2 | 7321 | relax_end (); |
f5040a92 | 7322 | } |
4d7206a2 | 7323 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 7324 | { |
4d7206a2 | 7325 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7326 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7327 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 7328 | relax_switch (); |
67c0d1eb RS |
7329 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7330 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 7331 | relax_end (); |
f5040a92 | 7332 | } |
4d7206a2 | 7333 | else |
f5040a92 | 7334 | { |
67c0d1eb RS |
7335 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7336 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
7337 | } |
7338 | } | |
0a44bf69 | 7339 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 7340 | { |
67c0d1eb | 7341 | int gpdelay; |
9117d219 NC |
7342 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
7343 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 7344 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
7345 | |
7346 | /* This is the large GOT case. If this is a reference to an | |
7347 | external symbol, and there is no constant, we want | |
7348 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7349 | addu $tempreg,$tempreg,$gp | |
7350 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 7351 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
7352 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
7353 | addu $tempreg,$tempreg,$gp | |
7354 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
7355 | For a local symbol, we want |
7356 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7357 | nop | |
7358 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7359 | ||
7360 | If we have a small constant, and this is a reference to | |
7361 | an external symbol, we want | |
7362 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7363 | addu $tempreg,$tempreg,$gp | |
7364 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7365 | nop | |
7366 | addiu $tempreg,$tempreg,<constant> | |
7367 | For a local symbol, we want | |
7368 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7369 | nop | |
7370 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
7371 | ||
7372 | If we have a large constant, and this is a reference to | |
7373 | an external symbol, we want | |
7374 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7375 | addu $tempreg,$tempreg,$gp | |
7376 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7377 | lui $at,<hiconstant> | |
7378 | addiu $at,$at,<loconstant> | |
7379 | addu $tempreg,$tempreg,$at | |
7380 | For a local symbol, we want | |
7381 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7382 | lui $at,<hiconstant> | |
7383 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
7384 | addu $tempreg,$tempreg,$at | |
f5040a92 | 7385 | */ |
438c16b8 | 7386 | |
252b5132 RH |
7387 | expr1.X_add_number = offset_expr.X_add_number; |
7388 | offset_expr.X_add_number = 0; | |
4d7206a2 | 7389 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 7390 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
7391 | if (expr1.X_add_number == 0 && breg == 0 |
7392 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
7393 | { |
7394 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
7395 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
7396 | } | |
df58fc94 | 7397 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 7398 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7399 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 7400 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 7401 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
7402 | if (expr1.X_add_number == 0) |
7403 | { | |
67c0d1eb | 7404 | if (breg != 0) |
252b5132 RH |
7405 | { |
7406 | /* We're going to put in an addu instruction using | |
7407 | tempreg, so we may as well insert the nop right | |
7408 | now. */ | |
269137b2 | 7409 | load_delay_nop (); |
252b5132 | 7410 | } |
252b5132 RH |
7411 | } |
7412 | else if (expr1.X_add_number >= -0x8000 | |
7413 | && expr1.X_add_number < 0x8000) | |
7414 | { | |
269137b2 | 7415 | load_delay_nop (); |
67c0d1eb | 7416 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 7417 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
7418 | } |
7419 | else | |
7420 | { | |
252b5132 RH |
7421 | /* If we are going to add in a base register, and the |
7422 | target register and the base register are the same, | |
7423 | then we are using AT as a temporary register. Since | |
7424 | we want to load the constant into AT, we add our | |
7425 | current AT (from the global offset table) and the | |
7426 | register into the register now, and pretend we were | |
7427 | not using a base register. */ | |
7428 | if (breg != treg) | |
67c0d1eb | 7429 | dreg = tempreg; |
252b5132 RH |
7430 | else |
7431 | { | |
9c2799c2 | 7432 | gas_assert (tempreg == AT); |
269137b2 | 7433 | load_delay_nop (); |
67c0d1eb | 7434 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7435 | treg, AT, breg); |
252b5132 | 7436 | dreg = treg; |
252b5132 RH |
7437 | } |
7438 | ||
f6a22291 | 7439 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7440 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 7441 | |
252b5132 RH |
7442 | used_at = 1; |
7443 | } | |
4d7206a2 RS |
7444 | offset_expr.X_add_number = |
7445 | ((expr1.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
7446 | relax_switch (); | |
252b5132 | 7447 | |
67c0d1eb | 7448 | if (gpdelay) |
252b5132 RH |
7449 | { |
7450 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 7451 | the first instruction on the main stream does not. */ |
67c0d1eb | 7452 | macro_build (NULL, "nop", ""); |
252b5132 | 7453 | } |
ed6fb7bd | 7454 | |
67c0d1eb RS |
7455 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7456 | local_reloc_type, mips_gp_register); | |
f5040a92 | 7457 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
7458 | && expr1.X_add_number < 0x8000) |
7459 | { | |
269137b2 | 7460 | load_delay_nop (); |
67c0d1eb RS |
7461 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7462 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 7463 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
7464 | register, the external symbol case ended with a load, |
7465 | so if the symbol turns out to not be external, and | |
7466 | the next instruction uses tempreg, an unnecessary nop | |
7467 | will be inserted. */ | |
252b5132 RH |
7468 | } |
7469 | else | |
7470 | { | |
7471 | if (breg == treg) | |
7472 | { | |
7473 | /* We must add in the base register now, as in the | |
f5040a92 | 7474 | external symbol case. */ |
9c2799c2 | 7475 | gas_assert (tempreg == AT); |
269137b2 | 7476 | load_delay_nop (); |
67c0d1eb | 7477 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7478 | treg, AT, breg); |
252b5132 RH |
7479 | tempreg = treg; |
7480 | /* We set breg to 0 because we have arranged to add | |
f5040a92 | 7481 | it in in both cases. */ |
252b5132 RH |
7482 | breg = 0; |
7483 | } | |
7484 | ||
67c0d1eb RS |
7485 | macro_build_lui (&expr1, AT); |
7486 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 7487 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 7488 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7489 | tempreg, tempreg, AT); |
8fc2e39e | 7490 | used_at = 1; |
252b5132 | 7491 | } |
4d7206a2 | 7492 | relax_end (); |
252b5132 | 7493 | } |
0a44bf69 | 7494 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 7495 | { |
f5040a92 AO |
7496 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
7497 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 7498 | int add_breg_early = 0; |
f5040a92 AO |
7499 | |
7500 | /* This is the large GOT case. If this is a reference to an | |
7501 | external symbol, and there is no constant, we want | |
7502 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7503 | add $tempreg,$tempreg,$gp | |
7504 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 7505 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
7506 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
7507 | add $tempreg,$tempreg,$gp | |
7508 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
7509 | ||
7510 | If we have a small constant, and this is a reference to | |
7511 | an external symbol, we want | |
7512 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7513 | add $tempreg,$tempreg,$gp | |
7514 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7515 | addi $tempreg,$tempreg,<constant> | |
7516 | ||
7517 | If we have a large constant, and this is a reference to | |
7518 | an external symbol, we want | |
7519 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7520 | addu $tempreg,$tempreg,$gp | |
7521 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7522 | lui $at,<hiconstant> | |
7523 | addi $at,$at,<loconstant> | |
7524 | add $tempreg,$tempreg,$at | |
7525 | ||
7526 | If we have NewABI, and we know it's a local symbol, we want | |
7527 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
7528 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
7529 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
7530 | ||
4d7206a2 | 7531 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 7532 | |
4d7206a2 | 7533 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
7534 | offset_expr.X_add_number = 0; |
7535 | ||
1abe91b1 MR |
7536 | if (expr1.X_add_number == 0 && breg == 0 |
7537 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
7538 | { |
7539 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
7540 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
7541 | } | |
df58fc94 | 7542 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 7543 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7544 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
7545 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7546 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
7547 | |
7548 | if (expr1.X_add_number == 0) | |
4d7206a2 | 7549 | ; |
f5040a92 AO |
7550 | else if (expr1.X_add_number >= -0x8000 |
7551 | && expr1.X_add_number < 0x8000) | |
7552 | { | |
67c0d1eb | 7553 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 7554 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 7555 | } |
ecd13cd3 | 7556 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 7557 | { |
f5040a92 AO |
7558 | /* If we are going to add in a base register, and the |
7559 | target register and the base register are the same, | |
7560 | then we are using AT as a temporary register. Since | |
7561 | we want to load the constant into AT, we add our | |
7562 | current AT (from the global offset table) and the | |
7563 | register into the register now, and pretend we were | |
7564 | not using a base register. */ | |
7565 | if (breg != treg) | |
7566 | dreg = tempreg; | |
7567 | else | |
7568 | { | |
9c2799c2 | 7569 | gas_assert (tempreg == AT); |
67c0d1eb | 7570 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7571 | treg, AT, breg); |
f5040a92 | 7572 | dreg = treg; |
67c0d1eb | 7573 | add_breg_early = 1; |
f5040a92 AO |
7574 | } |
7575 | ||
f6a22291 | 7576 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7577 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 7578 | |
f5040a92 AO |
7579 | used_at = 1; |
7580 | } | |
7581 | else | |
7582 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
7583 | ||
4d7206a2 | 7584 | relax_switch (); |
f5040a92 | 7585 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
7586 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7587 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
7588 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
7589 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
7590 | if (add_breg_early) | |
f5040a92 | 7591 | { |
67c0d1eb | 7592 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7593 | treg, tempreg, breg); |
f5040a92 AO |
7594 | breg = 0; |
7595 | tempreg = treg; | |
7596 | } | |
4d7206a2 | 7597 | relax_end (); |
f5040a92 | 7598 | } |
252b5132 RH |
7599 | else |
7600 | abort (); | |
7601 | ||
7602 | if (breg != 0) | |
aed1a261 | 7603 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", treg, tempreg, breg); |
252b5132 RH |
7604 | break; |
7605 | ||
52b6b6b9 | 7606 | case M_MSGSND: |
df58fc94 | 7607 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7608 | { |
7609 | unsigned long temp = (treg << 16) | (0x01); | |
7610 | macro_build (NULL, "c2", "C", temp); | |
7611 | } | |
c7af4273 | 7612 | break; |
52b6b6b9 JM |
7613 | |
7614 | case M_MSGLD: | |
df58fc94 | 7615 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7616 | { |
7617 | unsigned long temp = (0x02); | |
7618 | macro_build (NULL, "c2", "C", temp); | |
7619 | } | |
c7af4273 | 7620 | break; |
52b6b6b9 JM |
7621 | |
7622 | case M_MSGLD_T: | |
df58fc94 | 7623 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7624 | { |
7625 | unsigned long temp = (treg << 16) | (0x02); | |
7626 | macro_build (NULL, "c2", "C", temp); | |
7627 | } | |
c7af4273 | 7628 | break; |
52b6b6b9 JM |
7629 | |
7630 | case M_MSGWAIT: | |
df58fc94 | 7631 | gas_assert (!mips_opts.micromips); |
52b6b6b9 | 7632 | macro_build (NULL, "c2", "C", 3); |
c7af4273 | 7633 | break; |
52b6b6b9 JM |
7634 | |
7635 | case M_MSGWAIT_T: | |
df58fc94 | 7636 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7637 | { |
7638 | unsigned long temp = (treg << 16) | 0x03; | |
7639 | macro_build (NULL, "c2", "C", temp); | |
7640 | } | |
c7af4273 | 7641 | break; |
52b6b6b9 | 7642 | |
252b5132 RH |
7643 | case M_J_A: |
7644 | /* The j instruction may not be used in PIC code, since it | |
7645 | requires an absolute address. We convert it to a b | |
7646 | instruction. */ | |
7647 | if (mips_pic == NO_PIC) | |
67c0d1eb | 7648 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 7649 | else |
67c0d1eb | 7650 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 7651 | break; |
252b5132 RH |
7652 | |
7653 | /* The jal instructions must be handled as macros because when | |
7654 | generating PIC code they expand to multi-instruction | |
7655 | sequences. Normally they are simple instructions. */ | |
df58fc94 RS |
7656 | case M_JALS_1: |
7657 | dreg = RA; | |
7658 | /* Fall through. */ | |
7659 | case M_JALS_2: | |
7660 | gas_assert (mips_opts.micromips); | |
7661 | jals = 1; | |
7662 | goto jal; | |
252b5132 RH |
7663 | case M_JAL_1: |
7664 | dreg = RA; | |
7665 | /* Fall through. */ | |
7666 | case M_JAL_2: | |
df58fc94 | 7667 | jal: |
3e722fb5 | 7668 | if (mips_pic == NO_PIC) |
df58fc94 RS |
7669 | { |
7670 | s = jals ? "jalrs" : "jalr"; | |
7671 | if (mips_opts.micromips && dreg == RA) | |
7672 | macro_build (NULL, s, "mj", sreg); | |
7673 | else | |
7674 | macro_build (NULL, s, JALR_FMT, dreg, sreg); | |
7675 | } | |
0a44bf69 | 7676 | else |
252b5132 | 7677 | { |
df58fc94 RS |
7678 | int cprestore = (mips_pic == SVR4_PIC && !HAVE_NEWABI |
7679 | && mips_cprestore_offset >= 0); | |
7680 | ||
252b5132 RH |
7681 | if (sreg != PIC_CALL_REG) |
7682 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 7683 | |
df58fc94 RS |
7684 | s = (mips_opts.micromips && (!mips_opts.noreorder || cprestore) |
7685 | ? "jalrs" : "jalr"); | |
7686 | if (mips_opts.micromips && dreg == RA) | |
7687 | macro_build (NULL, s, "mj", sreg); | |
7688 | else | |
7689 | macro_build (NULL, s, JALR_FMT, dreg, sreg); | |
0a44bf69 | 7690 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 7691 | { |
6478892d TS |
7692 | if (mips_cprestore_offset < 0) |
7693 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7694 | else | |
7695 | { | |
90ecf173 | 7696 | if (!mips_frame_reg_valid) |
7a621144 DJ |
7697 | { |
7698 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
7699 | /* Quiet this warning. */ | |
7700 | mips_frame_reg_valid = 1; | |
7701 | } | |
90ecf173 | 7702 | if (!mips_cprestore_valid) |
7a621144 DJ |
7703 | { |
7704 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7705 | /* Quiet this warning. */ | |
7706 | mips_cprestore_valid = 1; | |
7707 | } | |
d3fca0b5 MR |
7708 | if (mips_opts.noreorder) |
7709 | macro_build (NULL, "nop", ""); | |
6478892d | 7710 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 7711 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 7712 | mips_gp_register, |
256ab948 TS |
7713 | mips_frame_reg, |
7714 | HAVE_64BIT_ADDRESSES); | |
6478892d | 7715 | } |
252b5132 RH |
7716 | } |
7717 | } | |
252b5132 | 7718 | |
8fc2e39e | 7719 | break; |
252b5132 | 7720 | |
df58fc94 RS |
7721 | case M_JALS_A: |
7722 | gas_assert (mips_opts.micromips); | |
7723 | jals = 1; | |
7724 | /* Fall through. */ | |
252b5132 RH |
7725 | case M_JAL_A: |
7726 | if (mips_pic == NO_PIC) | |
df58fc94 | 7727 | macro_build (&offset_expr, jals ? "jals" : "jal", "a"); |
252b5132 RH |
7728 | else if (mips_pic == SVR4_PIC) |
7729 | { | |
7730 | /* If this is a reference to an external symbol, and we are | |
7731 | using a small GOT, we want | |
7732 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
7733 | nop | |
f9419b05 | 7734 | jalr $ra,$25 |
252b5132 RH |
7735 | nop |
7736 | lw $gp,cprestore($sp) | |
7737 | The cprestore value is set using the .cprestore | |
7738 | pseudo-op. If we are using a big GOT, we want | |
7739 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
7740 | addu $25,$25,$gp | |
7741 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
7742 | nop | |
f9419b05 | 7743 | jalr $ra,$25 |
252b5132 RH |
7744 | nop |
7745 | lw $gp,cprestore($sp) | |
7746 | If the symbol is not external, we want | |
7747 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7748 | nop | |
7749 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 7750 | jalr $ra,$25 |
252b5132 | 7751 | nop |
438c16b8 | 7752 | lw $gp,cprestore($sp) |
f5040a92 AO |
7753 | |
7754 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
7755 | sequences above, minus nops, unless the symbol is local, | |
7756 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
7757 | GOT_DISP. */ | |
438c16b8 | 7758 | if (HAVE_NEWABI) |
252b5132 | 7759 | { |
90ecf173 | 7760 | if (!mips_big_got) |
f5040a92 | 7761 | { |
4d7206a2 | 7762 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7763 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7764 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 7765 | mips_gp_register); |
4d7206a2 | 7766 | relax_switch (); |
67c0d1eb RS |
7767 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7768 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
7769 | mips_gp_register); |
7770 | relax_end (); | |
f5040a92 AO |
7771 | } |
7772 | else | |
7773 | { | |
4d7206a2 | 7774 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 7775 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
7776 | BFD_RELOC_MIPS_CALL_HI16); |
7777 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
7778 | PIC_CALL_REG, mips_gp_register); | |
7779 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
7780 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
7781 | PIC_CALL_REG); | |
4d7206a2 | 7782 | relax_switch (); |
67c0d1eb RS |
7783 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7784 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
7785 | mips_gp_register); | |
7786 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7787 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 7788 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 7789 | relax_end (); |
f5040a92 | 7790 | } |
684022ea | 7791 | |
df58fc94 | 7792 | macro_build_jalr (&offset_expr, 0); |
252b5132 RH |
7793 | } |
7794 | else | |
7795 | { | |
4d7206a2 | 7796 | relax_start (offset_expr.X_add_symbol); |
90ecf173 | 7797 | if (!mips_big_got) |
438c16b8 | 7798 | { |
67c0d1eb RS |
7799 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7800 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 7801 | mips_gp_register); |
269137b2 | 7802 | load_delay_nop (); |
4d7206a2 | 7803 | relax_switch (); |
438c16b8 | 7804 | } |
252b5132 | 7805 | else |
252b5132 | 7806 | { |
67c0d1eb RS |
7807 | int gpdelay; |
7808 | ||
7809 | gpdelay = reg_needs_delay (mips_gp_register); | |
df58fc94 | 7810 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
7811 | BFD_RELOC_MIPS_CALL_HI16); |
7812 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
7813 | PIC_CALL_REG, mips_gp_register); | |
7814 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
7815 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
7816 | PIC_CALL_REG); | |
269137b2 | 7817 | load_delay_nop (); |
4d7206a2 | 7818 | relax_switch (); |
67c0d1eb RS |
7819 | if (gpdelay) |
7820 | macro_build (NULL, "nop", ""); | |
252b5132 | 7821 | } |
67c0d1eb RS |
7822 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7823 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 7824 | mips_gp_register); |
269137b2 | 7825 | load_delay_nop (); |
67c0d1eb RS |
7826 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7827 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 7828 | relax_end (); |
df58fc94 | 7829 | macro_build_jalr (&offset_expr, mips_cprestore_offset >= 0); |
438c16b8 | 7830 | |
6478892d TS |
7831 | if (mips_cprestore_offset < 0) |
7832 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7833 | else | |
7834 | { | |
90ecf173 | 7835 | if (!mips_frame_reg_valid) |
7a621144 DJ |
7836 | { |
7837 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
7838 | /* Quiet this warning. */ | |
7839 | mips_frame_reg_valid = 1; | |
7840 | } | |
90ecf173 | 7841 | if (!mips_cprestore_valid) |
7a621144 DJ |
7842 | { |
7843 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7844 | /* Quiet this warning. */ | |
7845 | mips_cprestore_valid = 1; | |
7846 | } | |
6478892d | 7847 | if (mips_opts.noreorder) |
67c0d1eb | 7848 | macro_build (NULL, "nop", ""); |
6478892d | 7849 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 7850 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 7851 | mips_gp_register, |
256ab948 TS |
7852 | mips_frame_reg, |
7853 | HAVE_64BIT_ADDRESSES); | |
6478892d | 7854 | } |
252b5132 RH |
7855 | } |
7856 | } | |
0a44bf69 RS |
7857 | else if (mips_pic == VXWORKS_PIC) |
7858 | as_bad (_("Non-PIC jump used in PIC library")); | |
252b5132 RH |
7859 | else |
7860 | abort (); | |
7861 | ||
8fc2e39e | 7862 | break; |
252b5132 RH |
7863 | |
7864 | case M_LB_AB: | |
df58fc94 | 7865 | ab = 1; |
252b5132 | 7866 | s = "lb"; |
df58fc94 | 7867 | fmt = "t,o(b)"; |
252b5132 RH |
7868 | goto ld; |
7869 | case M_LBU_AB: | |
df58fc94 | 7870 | ab = 1; |
252b5132 | 7871 | s = "lbu"; |
df58fc94 | 7872 | fmt = "t,o(b)"; |
252b5132 RH |
7873 | goto ld; |
7874 | case M_LH_AB: | |
df58fc94 | 7875 | ab = 1; |
252b5132 | 7876 | s = "lh"; |
df58fc94 | 7877 | fmt = "t,o(b)"; |
252b5132 RH |
7878 | goto ld; |
7879 | case M_LHU_AB: | |
df58fc94 | 7880 | ab = 1; |
252b5132 | 7881 | s = "lhu"; |
df58fc94 | 7882 | fmt = "t,o(b)"; |
252b5132 RH |
7883 | goto ld; |
7884 | case M_LW_AB: | |
df58fc94 | 7885 | ab = 1; |
252b5132 | 7886 | s = "lw"; |
df58fc94 | 7887 | fmt = "t,o(b)"; |
252b5132 RH |
7888 | goto ld; |
7889 | case M_LWC0_AB: | |
df58fc94 RS |
7890 | ab = 1; |
7891 | gas_assert (!mips_opts.micromips); | |
252b5132 | 7892 | s = "lwc0"; |
df58fc94 | 7893 | fmt = "E,o(b)"; |
bdaaa2e1 | 7894 | /* Itbl support may require additional care here. */ |
252b5132 | 7895 | coproc = 1; |
df58fc94 | 7896 | goto ld_st; |
252b5132 | 7897 | case M_LWC1_AB: |
df58fc94 | 7898 | ab = 1; |
252b5132 | 7899 | s = "lwc1"; |
df58fc94 | 7900 | fmt = "T,o(b)"; |
bdaaa2e1 | 7901 | /* Itbl support may require additional care here. */ |
252b5132 | 7902 | coproc = 1; |
df58fc94 | 7903 | goto ld_st; |
252b5132 | 7904 | case M_LWC2_AB: |
df58fc94 RS |
7905 | ab = 1; |
7906 | case M_LWC2_OB: | |
252b5132 | 7907 | s = "lwc2"; |
df58fc94 RS |
7908 | fmt = COP12_FMT; |
7909 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 7910 | /* Itbl support may require additional care here. */ |
252b5132 | 7911 | coproc = 1; |
df58fc94 | 7912 | goto ld_st; |
252b5132 | 7913 | case M_LWC3_AB: |
df58fc94 RS |
7914 | ab = 1; |
7915 | gas_assert (!mips_opts.micromips); | |
252b5132 | 7916 | s = "lwc3"; |
df58fc94 | 7917 | fmt = "E,o(b)"; |
bdaaa2e1 | 7918 | /* Itbl support may require additional care here. */ |
252b5132 | 7919 | coproc = 1; |
df58fc94 | 7920 | goto ld_st; |
252b5132 | 7921 | case M_LWL_AB: |
df58fc94 RS |
7922 | ab = 1; |
7923 | case M_LWL_OB: | |
252b5132 | 7924 | s = "lwl"; |
df58fc94 RS |
7925 | fmt = MEM12_FMT; |
7926 | off12 = mips_opts.micromips; | |
7927 | goto ld_st; | |
252b5132 | 7928 | case M_LWR_AB: |
df58fc94 RS |
7929 | ab = 1; |
7930 | case M_LWR_OB: | |
252b5132 | 7931 | s = "lwr"; |
df58fc94 RS |
7932 | fmt = MEM12_FMT; |
7933 | off12 = mips_opts.micromips; | |
7934 | goto ld_st; | |
252b5132 | 7935 | case M_LDC1_AB: |
df58fc94 | 7936 | ab = 1; |
252b5132 | 7937 | s = "ldc1"; |
df58fc94 | 7938 | fmt = "T,o(b)"; |
bdaaa2e1 | 7939 | /* Itbl support may require additional care here. */ |
252b5132 | 7940 | coproc = 1; |
df58fc94 | 7941 | goto ld_st; |
252b5132 | 7942 | case M_LDC2_AB: |
df58fc94 RS |
7943 | ab = 1; |
7944 | case M_LDC2_OB: | |
252b5132 | 7945 | s = "ldc2"; |
df58fc94 RS |
7946 | fmt = COP12_FMT; |
7947 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 7948 | /* Itbl support may require additional care here. */ |
252b5132 | 7949 | coproc = 1; |
df58fc94 | 7950 | goto ld_st; |
252b5132 | 7951 | case M_LDC3_AB: |
df58fc94 | 7952 | ab = 1; |
252b5132 | 7953 | s = "ldc3"; |
df58fc94 | 7954 | fmt = "E,o(b)"; |
bdaaa2e1 | 7955 | /* Itbl support may require additional care here. */ |
252b5132 | 7956 | coproc = 1; |
df58fc94 | 7957 | goto ld_st; |
252b5132 | 7958 | case M_LDL_AB: |
df58fc94 RS |
7959 | ab = 1; |
7960 | case M_LDL_OB: | |
252b5132 | 7961 | s = "ldl"; |
df58fc94 RS |
7962 | fmt = MEM12_FMT; |
7963 | off12 = mips_opts.micromips; | |
7964 | goto ld_st; | |
252b5132 | 7965 | case M_LDR_AB: |
df58fc94 RS |
7966 | ab = 1; |
7967 | case M_LDR_OB: | |
252b5132 | 7968 | s = "ldr"; |
df58fc94 RS |
7969 | fmt = MEM12_FMT; |
7970 | off12 = mips_opts.micromips; | |
7971 | goto ld_st; | |
252b5132 | 7972 | case M_LL_AB: |
df58fc94 RS |
7973 | ab = 1; |
7974 | case M_LL_OB: | |
252b5132 | 7975 | s = "ll"; |
df58fc94 RS |
7976 | fmt = MEM12_FMT; |
7977 | off12 = mips_opts.micromips; | |
252b5132 RH |
7978 | goto ld; |
7979 | case M_LLD_AB: | |
df58fc94 RS |
7980 | ab = 1; |
7981 | case M_LLD_OB: | |
252b5132 | 7982 | s = "lld"; |
df58fc94 RS |
7983 | fmt = MEM12_FMT; |
7984 | off12 = mips_opts.micromips; | |
252b5132 RH |
7985 | goto ld; |
7986 | case M_LWU_AB: | |
df58fc94 RS |
7987 | ab = 1; |
7988 | case M_LWU_OB: | |
252b5132 | 7989 | s = "lwu"; |
df58fc94 RS |
7990 | fmt = MEM12_FMT; |
7991 | off12 = mips_opts.micromips; | |
7992 | goto ld; | |
7993 | case M_LWP_AB: | |
7994 | ab = 1; | |
7995 | case M_LWP_OB: | |
7996 | gas_assert (mips_opts.micromips); | |
7997 | s = "lwp"; | |
7998 | fmt = "t,~(b)"; | |
7999 | off12 = 1; | |
8000 | lp = 1; | |
8001 | goto ld; | |
8002 | case M_LDP_AB: | |
8003 | ab = 1; | |
8004 | case M_LDP_OB: | |
8005 | gas_assert (mips_opts.micromips); | |
8006 | s = "ldp"; | |
8007 | fmt = "t,~(b)"; | |
8008 | off12 = 1; | |
8009 | lp = 1; | |
8010 | goto ld; | |
8011 | case M_LWM_AB: | |
8012 | ab = 1; | |
8013 | case M_LWM_OB: | |
8014 | gas_assert (mips_opts.micromips); | |
8015 | s = "lwm"; | |
8016 | fmt = "n,~(b)"; | |
8017 | off12 = 1; | |
8018 | goto ld_st; | |
8019 | case M_LDM_AB: | |
8020 | ab = 1; | |
8021 | case M_LDM_OB: | |
8022 | gas_assert (mips_opts.micromips); | |
8023 | s = "ldm"; | |
8024 | fmt = "n,~(b)"; | |
8025 | off12 = 1; | |
8026 | goto ld_st; | |
8027 | ||
252b5132 | 8028 | ld: |
df58fc94 RS |
8029 | if (breg == treg + lp) |
8030 | goto ld_st; | |
252b5132 | 8031 | else |
df58fc94 RS |
8032 | tempreg = treg + lp; |
8033 | goto ld_noat; | |
8034 | ||
252b5132 | 8035 | case M_SB_AB: |
df58fc94 | 8036 | ab = 1; |
252b5132 | 8037 | s = "sb"; |
df58fc94 RS |
8038 | fmt = "t,o(b)"; |
8039 | goto ld_st; | |
252b5132 | 8040 | case M_SH_AB: |
df58fc94 | 8041 | ab = 1; |
252b5132 | 8042 | s = "sh"; |
df58fc94 RS |
8043 | fmt = "t,o(b)"; |
8044 | goto ld_st; | |
252b5132 | 8045 | case M_SW_AB: |
df58fc94 | 8046 | ab = 1; |
252b5132 | 8047 | s = "sw"; |
df58fc94 RS |
8048 | fmt = "t,o(b)"; |
8049 | goto ld_st; | |
252b5132 | 8050 | case M_SWC0_AB: |
df58fc94 RS |
8051 | ab = 1; |
8052 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8053 | s = "swc0"; |
df58fc94 | 8054 | fmt = "E,o(b)"; |
bdaaa2e1 | 8055 | /* Itbl support may require additional care here. */ |
252b5132 | 8056 | coproc = 1; |
df58fc94 | 8057 | goto ld_st; |
252b5132 | 8058 | case M_SWC1_AB: |
df58fc94 | 8059 | ab = 1; |
252b5132 | 8060 | s = "swc1"; |
df58fc94 | 8061 | fmt = "T,o(b)"; |
bdaaa2e1 | 8062 | /* Itbl support may require additional care here. */ |
252b5132 | 8063 | coproc = 1; |
df58fc94 | 8064 | goto ld_st; |
252b5132 | 8065 | case M_SWC2_AB: |
df58fc94 RS |
8066 | ab = 1; |
8067 | case M_SWC2_OB: | |
252b5132 | 8068 | s = "swc2"; |
df58fc94 RS |
8069 | fmt = COP12_FMT; |
8070 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8071 | /* Itbl support may require additional care here. */ |
252b5132 | 8072 | coproc = 1; |
df58fc94 | 8073 | goto ld_st; |
252b5132 | 8074 | case M_SWC3_AB: |
df58fc94 RS |
8075 | ab = 1; |
8076 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8077 | s = "swc3"; |
df58fc94 | 8078 | fmt = "E,o(b)"; |
bdaaa2e1 | 8079 | /* Itbl support may require additional care here. */ |
252b5132 | 8080 | coproc = 1; |
df58fc94 | 8081 | goto ld_st; |
252b5132 | 8082 | case M_SWL_AB: |
df58fc94 RS |
8083 | ab = 1; |
8084 | case M_SWL_OB: | |
252b5132 | 8085 | s = "swl"; |
df58fc94 RS |
8086 | fmt = MEM12_FMT; |
8087 | off12 = mips_opts.micromips; | |
8088 | goto ld_st; | |
252b5132 | 8089 | case M_SWR_AB: |
df58fc94 RS |
8090 | ab = 1; |
8091 | case M_SWR_OB: | |
252b5132 | 8092 | s = "swr"; |
df58fc94 RS |
8093 | fmt = MEM12_FMT; |
8094 | off12 = mips_opts.micromips; | |
8095 | goto ld_st; | |
252b5132 | 8096 | case M_SC_AB: |
df58fc94 RS |
8097 | ab = 1; |
8098 | case M_SC_OB: | |
252b5132 | 8099 | s = "sc"; |
df58fc94 RS |
8100 | fmt = MEM12_FMT; |
8101 | off12 = mips_opts.micromips; | |
8102 | goto ld_st; | |
252b5132 | 8103 | case M_SCD_AB: |
df58fc94 RS |
8104 | ab = 1; |
8105 | case M_SCD_OB: | |
252b5132 | 8106 | s = "scd"; |
df58fc94 RS |
8107 | fmt = MEM12_FMT; |
8108 | off12 = mips_opts.micromips; | |
8109 | goto ld_st; | |
d43b4baf | 8110 | case M_CACHE_AB: |
df58fc94 RS |
8111 | ab = 1; |
8112 | case M_CACHE_OB: | |
d43b4baf | 8113 | s = "cache"; |
df58fc94 RS |
8114 | fmt = mips_opts.micromips ? "k,~(b)" : "k,o(b)"; |
8115 | off12 = mips_opts.micromips; | |
8116 | goto ld_st; | |
3eebd5eb | 8117 | case M_PREF_AB: |
df58fc94 RS |
8118 | ab = 1; |
8119 | case M_PREF_OB: | |
3eebd5eb | 8120 | s = "pref"; |
df58fc94 RS |
8121 | fmt = !mips_opts.micromips ? "k,o(b)" : "k,~(b)"; |
8122 | off12 = mips_opts.micromips; | |
8123 | goto ld_st; | |
252b5132 | 8124 | case M_SDC1_AB: |
df58fc94 | 8125 | ab = 1; |
252b5132 | 8126 | s = "sdc1"; |
df58fc94 | 8127 | fmt = "T,o(b)"; |
252b5132 | 8128 | coproc = 1; |
bdaaa2e1 | 8129 | /* Itbl support may require additional care here. */ |
df58fc94 | 8130 | goto ld_st; |
252b5132 | 8131 | case M_SDC2_AB: |
df58fc94 RS |
8132 | ab = 1; |
8133 | case M_SDC2_OB: | |
252b5132 | 8134 | s = "sdc2"; |
df58fc94 RS |
8135 | fmt = COP12_FMT; |
8136 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8137 | /* Itbl support may require additional care here. */ |
252b5132 | 8138 | coproc = 1; |
df58fc94 | 8139 | goto ld_st; |
252b5132 | 8140 | case M_SDC3_AB: |
df58fc94 RS |
8141 | ab = 1; |
8142 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8143 | s = "sdc3"; |
df58fc94 | 8144 | fmt = "E,o(b)"; |
bdaaa2e1 | 8145 | /* Itbl support may require additional care here. */ |
252b5132 | 8146 | coproc = 1; |
df58fc94 | 8147 | goto ld_st; |
252b5132 | 8148 | case M_SDL_AB: |
df58fc94 RS |
8149 | ab = 1; |
8150 | case M_SDL_OB: | |
252b5132 | 8151 | s = "sdl"; |
df58fc94 RS |
8152 | fmt = MEM12_FMT; |
8153 | off12 = mips_opts.micromips; | |
8154 | goto ld_st; | |
252b5132 | 8155 | case M_SDR_AB: |
df58fc94 RS |
8156 | ab = 1; |
8157 | case M_SDR_OB: | |
252b5132 | 8158 | s = "sdr"; |
df58fc94 RS |
8159 | fmt = MEM12_FMT; |
8160 | off12 = mips_opts.micromips; | |
8161 | goto ld_st; | |
8162 | case M_SWP_AB: | |
8163 | ab = 1; | |
8164 | case M_SWP_OB: | |
8165 | gas_assert (mips_opts.micromips); | |
8166 | s = "swp"; | |
8167 | fmt = "t,~(b)"; | |
8168 | off12 = 1; | |
8169 | goto ld_st; | |
8170 | case M_SDP_AB: | |
8171 | ab = 1; | |
8172 | case M_SDP_OB: | |
8173 | gas_assert (mips_opts.micromips); | |
8174 | s = "sdp"; | |
8175 | fmt = "t,~(b)"; | |
8176 | off12 = 1; | |
8177 | goto ld_st; | |
8178 | case M_SWM_AB: | |
8179 | ab = 1; | |
8180 | case M_SWM_OB: | |
8181 | gas_assert (mips_opts.micromips); | |
8182 | s = "swm"; | |
8183 | fmt = "n,~(b)"; | |
8184 | off12 = 1; | |
8185 | goto ld_st; | |
8186 | case M_SDM_AB: | |
8187 | ab = 1; | |
8188 | case M_SDM_OB: | |
8189 | gas_assert (mips_opts.micromips); | |
8190 | s = "sdm"; | |
8191 | fmt = "n,~(b)"; | |
8192 | off12 = 1; | |
8193 | ||
8194 | ld_st: | |
8fc2e39e TS |
8195 | tempreg = AT; |
8196 | used_at = 1; | |
df58fc94 | 8197 | ld_noat: |
b19e8a9b AN |
8198 | if (coproc |
8199 | && NO_ISA_COP (mips_opts.arch) | |
8200 | && (ip->insn_mo->pinfo2 & (INSN2_M_FP_S | INSN2_M_FP_D)) == 0) | |
8201 | { | |
f71d0d44 | 8202 | as_bad (_("Opcode not supported on this processor: %s"), |
b19e8a9b AN |
8203 | mips_cpu_info_from_arch (mips_opts.arch)->name); |
8204 | break; | |
8205 | } | |
8206 | ||
252b5132 RH |
8207 | if (offset_expr.X_op != O_constant |
8208 | && offset_expr.X_op != O_symbol) | |
8209 | { | |
f71d0d44 | 8210 | as_bad (_("Expression too complex")); |
252b5132 RH |
8211 | offset_expr.X_op = O_constant; |
8212 | } | |
8213 | ||
2051e8c4 MR |
8214 | if (HAVE_32BIT_ADDRESSES |
8215 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
8216 | { |
8217 | char value [32]; | |
8218 | ||
8219 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 8220 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 8221 | } |
2051e8c4 | 8222 | |
252b5132 RH |
8223 | /* A constant expression in PIC code can be handled just as it |
8224 | is in non PIC code. */ | |
aed1a261 RS |
8225 | if (offset_expr.X_op == O_constant) |
8226 | { | |
df58fc94 RS |
8227 | int hipart = 0; |
8228 | ||
842f8b2a | 8229 | expr1.X_add_number = offset_expr.X_add_number; |
2051e8c4 | 8230 | normalize_address_expr (&expr1); |
df58fc94 | 8231 | if (!off12 && !IS_SEXT_16BIT_NUM (expr1.X_add_number)) |
842f8b2a MR |
8232 | { |
8233 | expr1.X_add_number = ((expr1.X_add_number + 0x8000) | |
8234 | & ~(bfd_vma) 0xffff); | |
df58fc94 RS |
8235 | hipart = 1; |
8236 | } | |
8237 | else if (off12 && !IS_SEXT_12BIT_NUM (expr1.X_add_number)) | |
8238 | { | |
8239 | expr1.X_add_number = ((expr1.X_add_number + 0x800) | |
8240 | & ~(bfd_vma) 0xfff); | |
8241 | hipart = 1; | |
8242 | } | |
8243 | if (hipart) | |
8244 | { | |
842f8b2a MR |
8245 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
8246 | if (breg != 0) | |
8247 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8248 | tempreg, tempreg, breg); | |
8249 | breg = tempreg; | |
8250 | } | |
df58fc94 RS |
8251 | if (!off12) |
8252 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, breg); | |
8253 | else | |
8254 | macro_build (NULL, s, fmt, | |
8255 | treg, (unsigned long) offset_expr.X_add_number, breg); | |
8256 | } | |
8257 | else if (off12) | |
8258 | { | |
8259 | /* A 12-bit offset field is too narrow to be used for a low-part | |
8260 | relocation, so load the whole address into the auxillary | |
8261 | register. In the case of "A(b)" addresses, we first load | |
8262 | absolute address "A" into the register and then add base | |
8263 | register "b". In the case of "o(b)" addresses, we simply | |
8264 | need to add 16-bit offset "o" to base register "b", and | |
8265 | offset_reloc already contains the relocations associated | |
8266 | with "o". */ | |
8267 | if (ab) | |
8268 | { | |
8269 | load_address (tempreg, &offset_expr, &used_at); | |
8270 | if (breg != 0) | |
8271 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8272 | tempreg, tempreg, breg); | |
8273 | } | |
8274 | else | |
8275 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
8276 | tempreg, breg, -1, | |
8277 | offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
8278 | expr1.X_add_number = 0; | |
8279 | macro_build (NULL, s, fmt, | |
8280 | treg, (unsigned long) expr1.X_add_number, tempreg); | |
aed1a261 RS |
8281 | } |
8282 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
8283 | { |
8284 | /* If this is a reference to a GP relative symbol, and there | |
8285 | is no base register, we want | |
cdf6fd85 | 8286 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
8287 | Otherwise, if there is no base register, we want |
8288 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8289 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8290 | If we have a constant, we need two instructions anyhow, | |
8291 | so we always use the latter form. | |
8292 | ||
8293 | If we have a base register, and this is a reference to a | |
8294 | GP relative symbol, we want | |
8295 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 8296 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
8297 | Otherwise we want |
8298 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8299 | addu $tempreg,$tempreg,$breg | |
8300 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 8301 | With a constant we always use the latter case. |
76b3015f | 8302 | |
d6bc6245 TS |
8303 | With 64bit address space and no base register and $at usable, |
8304 | we want | |
8305 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8306 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8307 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8308 | dsll32 $tempreg,0 | |
8309 | daddu $tempreg,$at | |
8310 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8311 | If we have a base register, we want | |
8312 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8313 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8314 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8315 | daddu $at,$breg | |
8316 | dsll32 $tempreg,0 | |
8317 | daddu $tempreg,$at | |
8318 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8319 | ||
8320 | Without $at we can't generate the optimal path for superscalar | |
8321 | processors here since this would require two temporary registers. | |
8322 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8323 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8324 | dsll $tempreg,16 | |
8325 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8326 | dsll $tempreg,16 | |
8327 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8328 | If we have a base register, we want | |
8329 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8330 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8331 | dsll $tempreg,16 | |
8332 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8333 | dsll $tempreg,16 | |
8334 | daddu $tempreg,$tempreg,$breg | |
8335 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 | 8336 | |
6caf9ef4 | 8337 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
8338 | the same sequence as in 32bit address space. */ |
8339 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 8340 | { |
aed1a261 | 8341 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
8342 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
8343 | { | |
8344 | relax_start (offset_expr.X_add_symbol); | |
8345 | if (breg == 0) | |
8346 | { | |
8347 | macro_build (&offset_expr, s, fmt, treg, | |
8348 | BFD_RELOC_GPREL16, mips_gp_register); | |
8349 | } | |
8350 | else | |
8351 | { | |
8352 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8353 | tempreg, breg, mips_gp_register); | |
8354 | macro_build (&offset_expr, s, fmt, treg, | |
8355 | BFD_RELOC_GPREL16, tempreg); | |
8356 | } | |
8357 | relax_switch (); | |
8358 | } | |
d6bc6245 | 8359 | |
741fe287 | 8360 | if (used_at == 0 && mips_opts.at) |
d6bc6245 | 8361 | { |
df58fc94 | 8362 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb | 8363 | BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 8364 | macro_build (&offset_expr, "lui", LUI_FMT, AT, |
67c0d1eb RS |
8365 | BFD_RELOC_HI16_S); |
8366 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
8367 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 8368 | if (breg != 0) |
67c0d1eb | 8369 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
df58fc94 | 8370 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb RS |
8371 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
8372 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, | |
8373 | tempreg); | |
d6bc6245 TS |
8374 | used_at = 1; |
8375 | } | |
8376 | else | |
8377 | { | |
df58fc94 | 8378 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb RS |
8379 | BFD_RELOC_MIPS_HIGHEST); |
8380 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
8381 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 8382 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb RS |
8383 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, |
8384 | tempreg, BFD_RELOC_HI16_S); | |
df58fc94 | 8385 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
d6bc6245 | 8386 | if (breg != 0) |
67c0d1eb | 8387 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 8388 | tempreg, tempreg, breg); |
67c0d1eb | 8389 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8390 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 8391 | } |
6caf9ef4 TS |
8392 | |
8393 | if (mips_relax.sequence) | |
8394 | relax_end (); | |
8fc2e39e | 8395 | break; |
d6bc6245 | 8396 | } |
256ab948 | 8397 | |
252b5132 RH |
8398 | if (breg == 0) |
8399 | { | |
67c0d1eb | 8400 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 8401 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8402 | { |
4d7206a2 | 8403 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
8404 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_GPREL16, |
8405 | mips_gp_register); | |
4d7206a2 | 8406 | relax_switch (); |
252b5132 | 8407 | } |
67c0d1eb RS |
8408 | macro_build_lui (&offset_expr, tempreg); |
8409 | macro_build (&offset_expr, s, fmt, treg, | |
17a2f251 | 8410 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
8411 | if (mips_relax.sequence) |
8412 | relax_end (); | |
252b5132 RH |
8413 | } |
8414 | else | |
8415 | { | |
67c0d1eb | 8416 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 8417 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8418 | { |
4d7206a2 | 8419 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 8420 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8421 | tempreg, breg, mips_gp_register); |
67c0d1eb | 8422 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8423 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 8424 | relax_switch (); |
252b5132 | 8425 | } |
67c0d1eb RS |
8426 | macro_build_lui (&offset_expr, tempreg); |
8427 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 8428 | tempreg, tempreg, breg); |
67c0d1eb | 8429 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8430 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
8431 | if (mips_relax.sequence) |
8432 | relax_end (); | |
252b5132 RH |
8433 | } |
8434 | } | |
0a44bf69 | 8435 | else if (!mips_big_got) |
252b5132 | 8436 | { |
ed6fb7bd | 8437 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 8438 | |
252b5132 RH |
8439 | /* If this is a reference to an external symbol, we want |
8440 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8441 | nop | |
8442 | <op> $treg,0($tempreg) | |
8443 | Otherwise we want | |
8444 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8445 | nop | |
8446 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
8447 | <op> $treg,0($tempreg) | |
f5040a92 AO |
8448 | |
8449 | For NewABI, we want | |
8450 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
8451 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) | |
8452 | ||
252b5132 RH |
8453 | If there is a base register, we add it to $tempreg before |
8454 | the <op>. If there is a constant, we stick it in the | |
8455 | <op> instruction. We don't handle constants larger than | |
8456 | 16 bits, because we have no way to load the upper 16 bits | |
8457 | (actually, we could handle them for the subset of cases | |
8458 | in which we are not using $at). */ | |
9c2799c2 | 8459 | gas_assert (offset_expr.X_op == O_symbol); |
f5040a92 AO |
8460 | if (HAVE_NEWABI) |
8461 | { | |
67c0d1eb RS |
8462 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8463 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 8464 | if (breg != 0) |
67c0d1eb | 8465 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8466 | tempreg, tempreg, breg); |
67c0d1eb | 8467 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8468 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
8469 | break; |
8470 | } | |
252b5132 RH |
8471 | expr1.X_add_number = offset_expr.X_add_number; |
8472 | offset_expr.X_add_number = 0; | |
8473 | if (expr1.X_add_number < -0x8000 | |
8474 | || expr1.X_add_number >= 0x8000) | |
8475 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
8476 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8477 | lw_reloc_type, mips_gp_register); | |
269137b2 | 8478 | load_delay_nop (); |
4d7206a2 RS |
8479 | relax_start (offset_expr.X_add_symbol); |
8480 | relax_switch (); | |
67c0d1eb RS |
8481 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
8482 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 8483 | relax_end (); |
252b5132 | 8484 | if (breg != 0) |
67c0d1eb | 8485 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8486 | tempreg, tempreg, breg); |
67c0d1eb | 8487 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 8488 | } |
0a44bf69 | 8489 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 8490 | { |
67c0d1eb | 8491 | int gpdelay; |
252b5132 RH |
8492 | |
8493 | /* If this is a reference to an external symbol, we want | |
8494 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8495 | addu $tempreg,$tempreg,$gp | |
8496 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
8497 | <op> $treg,0($tempreg) | |
8498 | Otherwise we want | |
8499 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8500 | nop | |
8501 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
8502 | <op> $treg,0($tempreg) | |
8503 | If there is a base register, we add it to $tempreg before | |
8504 | the <op>. If there is a constant, we stick it in the | |
8505 | <op> instruction. We don't handle constants larger than | |
8506 | 16 bits, because we have no way to load the upper 16 bits | |
8507 | (actually, we could handle them for the subset of cases | |
f5040a92 | 8508 | in which we are not using $at). */ |
9c2799c2 | 8509 | gas_assert (offset_expr.X_op == O_symbol); |
252b5132 RH |
8510 | expr1.X_add_number = offset_expr.X_add_number; |
8511 | offset_expr.X_add_number = 0; | |
8512 | if (expr1.X_add_number < -0x8000 | |
8513 | || expr1.X_add_number >= 0x8000) | |
8514 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 8515 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 8516 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 8517 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 8518 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8519 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
8520 | mips_gp_register); | |
8521 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8522 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 8523 | relax_switch (); |
67c0d1eb RS |
8524 | if (gpdelay) |
8525 | macro_build (NULL, "nop", ""); | |
8526 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8527 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 8528 | load_delay_nop (); |
67c0d1eb RS |
8529 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
8530 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
8531 | relax_end (); |
8532 | ||
252b5132 | 8533 | if (breg != 0) |
67c0d1eb | 8534 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8535 | tempreg, tempreg, breg); |
67c0d1eb | 8536 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 8537 | } |
0a44bf69 | 8538 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 8539 | { |
f5040a92 AO |
8540 | /* If this is a reference to an external symbol, we want |
8541 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8542 | add $tempreg,$tempreg,$gp | |
8543 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
8544 | <op> $treg,<ofst>($tempreg) | |
8545 | Otherwise, for local symbols, we want: | |
8546 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
8547 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ | |
9c2799c2 | 8548 | gas_assert (offset_expr.X_op == O_symbol); |
4d7206a2 | 8549 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
8550 | offset_expr.X_add_number = 0; |
8551 | if (expr1.X_add_number < -0x8000 | |
8552 | || expr1.X_add_number >= 0x8000) | |
8553 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 8554 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 8555 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 8556 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8557 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
8558 | mips_gp_register); | |
8559 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8560 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 8561 | if (breg != 0) |
67c0d1eb | 8562 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8563 | tempreg, tempreg, breg); |
67c0d1eb | 8564 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
684022ea | 8565 | |
4d7206a2 | 8566 | relax_switch (); |
f5040a92 | 8567 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
8568 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8569 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 8570 | if (breg != 0) |
67c0d1eb | 8571 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8572 | tempreg, tempreg, breg); |
67c0d1eb | 8573 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8574 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 8575 | relax_end (); |
f5040a92 | 8576 | } |
252b5132 RH |
8577 | else |
8578 | abort (); | |
8579 | ||
252b5132 RH |
8580 | break; |
8581 | ||
8582 | case M_LI: | |
8583 | case M_LI_S: | |
67c0d1eb | 8584 | load_register (treg, &imm_expr, 0); |
8fc2e39e | 8585 | break; |
252b5132 RH |
8586 | |
8587 | case M_DLI: | |
67c0d1eb | 8588 | load_register (treg, &imm_expr, 1); |
8fc2e39e | 8589 | break; |
252b5132 RH |
8590 | |
8591 | case M_LI_SS: | |
8592 | if (imm_expr.X_op == O_constant) | |
8593 | { | |
8fc2e39e | 8594 | used_at = 1; |
67c0d1eb RS |
8595 | load_register (AT, &imm_expr, 0); |
8596 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
8597 | break; |
8598 | } | |
8599 | else | |
8600 | { | |
9c2799c2 | 8601 | gas_assert (offset_expr.X_op == O_symbol |
90ecf173 MR |
8602 | && strcmp (segment_name (S_GET_SEGMENT |
8603 | (offset_expr.X_add_symbol)), | |
8604 | ".lit4") == 0 | |
8605 | && offset_expr.X_add_number == 0); | |
67c0d1eb | 8606 | macro_build (&offset_expr, "lwc1", "T,o(b)", treg, |
17a2f251 | 8607 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 8608 | break; |
252b5132 RH |
8609 | } |
8610 | ||
8611 | case M_LI_D: | |
ca4e0257 RS |
8612 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
8613 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
8614 | order 32 bits of the value and the low order 32 bits are either | |
8615 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
8616 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
8617 | { | |
ca4e0257 | 8618 | if (HAVE_64BIT_GPRS) |
67c0d1eb | 8619 | load_register (treg, &imm_expr, 1); |
252b5132 RH |
8620 | else |
8621 | { | |
8622 | int hreg, lreg; | |
8623 | ||
8624 | if (target_big_endian) | |
8625 | { | |
8626 | hreg = treg; | |
8627 | lreg = treg + 1; | |
8628 | } | |
8629 | else | |
8630 | { | |
8631 | hreg = treg + 1; | |
8632 | lreg = treg; | |
8633 | } | |
8634 | ||
8635 | if (hreg <= 31) | |
67c0d1eb | 8636 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
8637 | if (lreg <= 31) |
8638 | { | |
8639 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 8640 | move_register (lreg, 0); |
252b5132 RH |
8641 | else |
8642 | { | |
9c2799c2 | 8643 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 8644 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
8645 | } |
8646 | } | |
8647 | } | |
8fc2e39e | 8648 | break; |
252b5132 RH |
8649 | } |
8650 | ||
8651 | /* We know that sym is in the .rdata section. First we get the | |
8652 | upper 16 bits of the address. */ | |
8653 | if (mips_pic == NO_PIC) | |
8654 | { | |
67c0d1eb | 8655 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 8656 | used_at = 1; |
252b5132 | 8657 | } |
0a44bf69 | 8658 | else |
252b5132 | 8659 | { |
67c0d1eb RS |
8660 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
8661 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 8662 | used_at = 1; |
252b5132 | 8663 | } |
bdaaa2e1 | 8664 | |
252b5132 | 8665 | /* Now we load the register(s). */ |
ca4e0257 | 8666 | if (HAVE_64BIT_GPRS) |
8fc2e39e TS |
8667 | { |
8668 | used_at = 1; | |
8669 | macro_build (&offset_expr, "ld", "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
8670 | } | |
252b5132 RH |
8671 | else |
8672 | { | |
8fc2e39e | 8673 | used_at = 1; |
67c0d1eb | 8674 | macro_build (&offset_expr, "lw", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
f9419b05 | 8675 | if (treg != RA) |
252b5132 RH |
8676 | { |
8677 | /* FIXME: How in the world do we deal with the possible | |
8678 | overflow here? */ | |
8679 | offset_expr.X_add_number += 4; | |
67c0d1eb | 8680 | macro_build (&offset_expr, "lw", "t,o(b)", |
17a2f251 | 8681 | treg + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
8682 | } |
8683 | } | |
252b5132 RH |
8684 | break; |
8685 | ||
8686 | case M_LI_DD: | |
ca4e0257 RS |
8687 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
8688 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
8689 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
8690 | the value and the low order 32 bits are either zero or in | |
8691 | OFFSET_EXPR. */ | |
252b5132 RH |
8692 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
8693 | { | |
8fc2e39e | 8694 | used_at = 1; |
67c0d1eb | 8695 | load_register (AT, &imm_expr, HAVE_64BIT_FPRS); |
ca4e0257 RS |
8696 | if (HAVE_64BIT_FPRS) |
8697 | { | |
9c2799c2 | 8698 | gas_assert (HAVE_64BIT_GPRS); |
67c0d1eb | 8699 | macro_build (NULL, "dmtc1", "t,S", AT, treg); |
ca4e0257 | 8700 | } |
252b5132 RH |
8701 | else |
8702 | { | |
67c0d1eb | 8703 | macro_build (NULL, "mtc1", "t,G", AT, treg + 1); |
252b5132 | 8704 | if (offset_expr.X_op == O_absent) |
67c0d1eb | 8705 | macro_build (NULL, "mtc1", "t,G", 0, treg); |
252b5132 RH |
8706 | else |
8707 | { | |
9c2799c2 | 8708 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb RS |
8709 | load_register (AT, &offset_expr, 0); |
8710 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
8711 | } |
8712 | } | |
8713 | break; | |
8714 | } | |
8715 | ||
9c2799c2 | 8716 | gas_assert (offset_expr.X_op == O_symbol |
90ecf173 | 8717 | && offset_expr.X_add_number == 0); |
252b5132 RH |
8718 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); |
8719 | if (strcmp (s, ".lit8") == 0) | |
8720 | { | |
df58fc94 | 8721 | if (mips_opts.isa != ISA_MIPS1 || mips_opts.micromips) |
252b5132 | 8722 | { |
67c0d1eb | 8723 | macro_build (&offset_expr, "ldc1", "T,o(b)", treg, |
17a2f251 | 8724 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 8725 | break; |
252b5132 | 8726 | } |
c9914766 | 8727 | breg = mips_gp_register; |
252b5132 RH |
8728 | r = BFD_RELOC_MIPS_LITERAL; |
8729 | goto dob; | |
8730 | } | |
8731 | else | |
8732 | { | |
9c2799c2 | 8733 | gas_assert (strcmp (s, RDATA_SECTION_NAME) == 0); |
8fc2e39e | 8734 | used_at = 1; |
0a44bf69 | 8735 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
8736 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
8737 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
8738 | else |
8739 | { | |
8740 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 8741 | macro_build_lui (&offset_expr, AT); |
252b5132 | 8742 | } |
bdaaa2e1 | 8743 | |
df58fc94 | 8744 | if (mips_opts.isa != ISA_MIPS1 || mips_opts.micromips) |
252b5132 | 8745 | { |
67c0d1eb RS |
8746 | macro_build (&offset_expr, "ldc1", "T,o(b)", |
8747 | treg, BFD_RELOC_LO16, AT); | |
252b5132 RH |
8748 | break; |
8749 | } | |
8750 | breg = AT; | |
8751 | r = BFD_RELOC_LO16; | |
8752 | goto dob; | |
8753 | } | |
8754 | ||
8755 | case M_L_DOB: | |
252b5132 RH |
8756 | /* Even on a big endian machine $fn comes before $fn+1. We have |
8757 | to adjust when loading from memory. */ | |
8758 | r = BFD_RELOC_LO16; | |
8759 | dob: | |
df58fc94 | 8760 | gas_assert (!mips_opts.micromips); |
9c2799c2 | 8761 | gas_assert (mips_opts.isa == ISA_MIPS1); |
67c0d1eb | 8762 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 8763 | target_big_endian ? treg + 1 : treg, r, breg); |
252b5132 RH |
8764 | /* FIXME: A possible overflow which I don't know how to deal |
8765 | with. */ | |
8766 | offset_expr.X_add_number += 4; | |
67c0d1eb | 8767 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 8768 | target_big_endian ? treg : treg + 1, r, breg); |
252b5132 RH |
8769 | break; |
8770 | ||
c4a68bea | 8771 | case M_S_DOB: |
df58fc94 | 8772 | gas_assert (!mips_opts.micromips); |
c4a68bea MR |
8773 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8774 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
8775 | to adjust when storing to memory. */ | |
8776 | macro_build (&offset_expr, "swc1", "T,o(b)", | |
8777 | target_big_endian ? treg + 1 : treg, BFD_RELOC_LO16, breg); | |
8778 | offset_expr.X_add_number += 4; | |
8779 | macro_build (&offset_expr, "swc1", "T,o(b)", | |
8780 | target_big_endian ? treg : treg + 1, BFD_RELOC_LO16, breg); | |
8781 | break; | |
8782 | ||
252b5132 | 8783 | case M_L_DAB: |
df58fc94 | 8784 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
8785 | /* |
8786 | * The MIPS assembler seems to check for X_add_number not | |
8787 | * being double aligned and generating: | |
8788 | * lui at,%hi(foo+1) | |
8789 | * addu at,at,v1 | |
8790 | * addiu at,at,%lo(foo+1) | |
8791 | * lwc1 f2,0(at) | |
8792 | * lwc1 f3,4(at) | |
8793 | * But, the resulting address is the same after relocation so why | |
8794 | * generate the extra instruction? | |
8795 | */ | |
bdaaa2e1 | 8796 | /* Itbl support may require additional care here. */ |
252b5132 | 8797 | coproc = 1; |
df58fc94 | 8798 | fmt = "T,o(b)"; |
e7af610e | 8799 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
8800 | { |
8801 | s = "ldc1"; | |
df58fc94 | 8802 | goto ld_st; |
252b5132 | 8803 | } |
252b5132 | 8804 | s = "lwc1"; |
252b5132 RH |
8805 | goto ldd_std; |
8806 | ||
8807 | case M_S_DAB: | |
df58fc94 RS |
8808 | gas_assert (!mips_opts.micromips); |
8809 | /* Itbl support may require additional care here. */ | |
8810 | coproc = 1; | |
8811 | fmt = "T,o(b)"; | |
e7af610e | 8812 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
8813 | { |
8814 | s = "sdc1"; | |
df58fc94 | 8815 | goto ld_st; |
252b5132 | 8816 | } |
252b5132 | 8817 | s = "swc1"; |
252b5132 RH |
8818 | goto ldd_std; |
8819 | ||
8820 | case M_LD_AB: | |
df58fc94 | 8821 | fmt = "t,o(b)"; |
ca4e0257 | 8822 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
8823 | { |
8824 | s = "ld"; | |
8825 | goto ld; | |
8826 | } | |
252b5132 | 8827 | s = "lw"; |
252b5132 RH |
8828 | goto ldd_std; |
8829 | ||
8830 | case M_SD_AB: | |
df58fc94 | 8831 | fmt = "t,o(b)"; |
ca4e0257 | 8832 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
8833 | { |
8834 | s = "sd"; | |
df58fc94 | 8835 | goto ld_st; |
252b5132 | 8836 | } |
252b5132 | 8837 | s = "sw"; |
252b5132 RH |
8838 | |
8839 | ldd_std: | |
8840 | if (offset_expr.X_op != O_symbol | |
8841 | && offset_expr.X_op != O_constant) | |
8842 | { | |
f71d0d44 | 8843 | as_bad (_("Expression too complex")); |
252b5132 RH |
8844 | offset_expr.X_op = O_constant; |
8845 | } | |
8846 | ||
2051e8c4 MR |
8847 | if (HAVE_32BIT_ADDRESSES |
8848 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
8849 | { |
8850 | char value [32]; | |
8851 | ||
8852 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 8853 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 8854 | } |
2051e8c4 | 8855 | |
252b5132 RH |
8856 | /* Even on a big endian machine $fn comes before $fn+1. We have |
8857 | to adjust when loading from memory. We set coproc if we must | |
8858 | load $fn+1 first. */ | |
bdaaa2e1 | 8859 | /* Itbl support may require additional care here. */ |
90ecf173 | 8860 | if (!target_big_endian) |
252b5132 RH |
8861 | coproc = 0; |
8862 | ||
90ecf173 | 8863 | if (mips_pic == NO_PIC || offset_expr.X_op == O_constant) |
252b5132 RH |
8864 | { |
8865 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 TS |
8866 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
8867 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
8868 | If we have a base register, we use this |
8869 | addu $at,$breg,$gp | |
cdf6fd85 TS |
8870 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
8871 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
8872 | If this is not a GP relative symbol, we want |
8873 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8874 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
8875 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
8876 | If there is a base register, we add it to $at after the | |
8877 | lui instruction. If there is a constant, we always use | |
8878 | the last case. */ | |
39a59cf8 MR |
8879 | if (offset_expr.X_op == O_symbol |
8880 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 8881 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8882 | { |
4d7206a2 | 8883 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
8884 | if (breg == 0) |
8885 | { | |
c9914766 | 8886 | tempreg = mips_gp_register; |
252b5132 RH |
8887 | } |
8888 | else | |
8889 | { | |
67c0d1eb | 8890 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8891 | AT, breg, mips_gp_register); |
252b5132 | 8892 | tempreg = AT; |
252b5132 RH |
8893 | used_at = 1; |
8894 | } | |
8895 | ||
beae10d5 | 8896 | /* Itbl support may require additional care here. */ |
67c0d1eb | 8897 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 8898 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
8899 | offset_expr.X_add_number += 4; |
8900 | ||
8901 | /* Set mips_optimize to 2 to avoid inserting an | |
8902 | undesired nop. */ | |
8903 | hold_mips_optimize = mips_optimize; | |
8904 | mips_optimize = 2; | |
beae10d5 | 8905 | /* Itbl support may require additional care here. */ |
67c0d1eb | 8906 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 8907 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
8908 | mips_optimize = hold_mips_optimize; |
8909 | ||
4d7206a2 | 8910 | relax_switch (); |
252b5132 | 8911 | |
0970e49e | 8912 | offset_expr.X_add_number -= 4; |
252b5132 | 8913 | } |
8fc2e39e | 8914 | used_at = 1; |
67c0d1eb | 8915 | macro_build_lui (&offset_expr, AT); |
252b5132 | 8916 | if (breg != 0) |
67c0d1eb | 8917 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 8918 | /* Itbl support may require additional care here. */ |
67c0d1eb | 8919 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 8920 | BFD_RELOC_LO16, AT); |
252b5132 RH |
8921 | /* FIXME: How do we handle overflow here? */ |
8922 | offset_expr.X_add_number += 4; | |
beae10d5 | 8923 | /* Itbl support may require additional care here. */ |
67c0d1eb | 8924 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 8925 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
8926 | if (mips_relax.sequence) |
8927 | relax_end (); | |
bdaaa2e1 | 8928 | } |
0a44bf69 | 8929 | else if (!mips_big_got) |
252b5132 | 8930 | { |
252b5132 RH |
8931 | /* If this is a reference to an external symbol, we want |
8932 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8933 | nop | |
8934 | <op> $treg,0($at) | |
8935 | <op> $treg+1,4($at) | |
8936 | Otherwise we want | |
8937 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8938 | nop | |
8939 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
8940 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
8941 | If there is a base register we add it to $at before the | |
8942 | lwc1 instructions. If there is a constant we include it | |
8943 | in the lwc1 instructions. */ | |
8944 | used_at = 1; | |
8945 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
8946 | if (expr1.X_add_number < -0x8000 |
8947 | || expr1.X_add_number >= 0x8000 - 4) | |
8948 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 8949 | load_got_offset (AT, &offset_expr); |
269137b2 | 8950 | load_delay_nop (); |
252b5132 | 8951 | if (breg != 0) |
67c0d1eb | 8952 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
8953 | |
8954 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
8955 | nop. */ | |
8956 | hold_mips_optimize = mips_optimize; | |
8957 | mips_optimize = 2; | |
4d7206a2 | 8958 | |
beae10d5 | 8959 | /* Itbl support may require additional care here. */ |
4d7206a2 | 8960 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
8961 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
8962 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 8963 | expr1.X_add_number += 4; |
67c0d1eb RS |
8964 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
8965 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 8966 | relax_switch (); |
67c0d1eb RS |
8967 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
8968 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 8969 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
8970 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
8971 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 8972 | relax_end (); |
252b5132 | 8973 | |
4d7206a2 | 8974 | mips_optimize = hold_mips_optimize; |
252b5132 | 8975 | } |
0a44bf69 | 8976 | else if (mips_big_got) |
252b5132 | 8977 | { |
67c0d1eb | 8978 | int gpdelay; |
252b5132 RH |
8979 | |
8980 | /* If this is a reference to an external symbol, we want | |
8981 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8982 | addu $at,$at,$gp | |
8983 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
8984 | nop | |
8985 | <op> $treg,0($at) | |
8986 | <op> $treg+1,4($at) | |
8987 | Otherwise we want | |
8988 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8989 | nop | |
8990 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
8991 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
8992 | If there is a base register we add it to $at before the | |
8993 | lwc1 instructions. If there is a constant we include it | |
8994 | in the lwc1 instructions. */ | |
8995 | used_at = 1; | |
8996 | expr1.X_add_number = offset_expr.X_add_number; | |
8997 | offset_expr.X_add_number = 0; | |
8998 | if (expr1.X_add_number < -0x8000 | |
8999 | || expr1.X_add_number >= 0x8000 - 4) | |
9000 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 9001 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 9002 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 9003 | macro_build (&offset_expr, "lui", LUI_FMT, |
67c0d1eb RS |
9004 | AT, BFD_RELOC_MIPS_GOT_HI16); |
9005 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 9006 | AT, AT, mips_gp_register); |
67c0d1eb | 9007 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 9008 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 9009 | load_delay_nop (); |
252b5132 | 9010 | if (breg != 0) |
67c0d1eb | 9011 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 9012 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9013 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 9014 | BFD_RELOC_LO16, AT); |
252b5132 RH |
9015 | expr1.X_add_number += 4; |
9016 | ||
9017 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9018 | nop. */ | |
9019 | hold_mips_optimize = mips_optimize; | |
9020 | mips_optimize = 2; | |
beae10d5 | 9021 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9022 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 9023 | BFD_RELOC_LO16, AT); |
252b5132 RH |
9024 | mips_optimize = hold_mips_optimize; |
9025 | expr1.X_add_number -= 4; | |
9026 | ||
4d7206a2 RS |
9027 | relax_switch (); |
9028 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
9029 | if (gpdelay) |
9030 | macro_build (NULL, "nop", ""); | |
9031 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
9032 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 9033 | load_delay_nop (); |
252b5132 | 9034 | if (breg != 0) |
67c0d1eb | 9035 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 9036 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
9037 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
9038 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9039 | offset_expr.X_add_number += 4; |
252b5132 RH |
9040 | |
9041 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9042 | nop. */ | |
9043 | hold_mips_optimize = mips_optimize; | |
9044 | mips_optimize = 2; | |
beae10d5 | 9045 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
9046 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
9047 | BFD_RELOC_LO16, AT); | |
252b5132 | 9048 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 9049 | relax_end (); |
252b5132 | 9050 | } |
252b5132 RH |
9051 | else |
9052 | abort (); | |
9053 | ||
252b5132 RH |
9054 | break; |
9055 | ||
9056 | case M_LD_OB: | |
704897fb | 9057 | s = HAVE_64BIT_GPRS ? "ld" : "lw"; |
252b5132 RH |
9058 | goto sd_ob; |
9059 | case M_SD_OB: | |
704897fb | 9060 | s = HAVE_64BIT_GPRS ? "sd" : "sw"; |
252b5132 | 9061 | sd_ob: |
4614d845 MR |
9062 | macro_build (&offset_expr, s, "t,o(b)", treg, |
9063 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2], | |
9064 | breg); | |
704897fb MR |
9065 | if (!HAVE_64BIT_GPRS) |
9066 | { | |
9067 | offset_expr.X_add_number += 4; | |
9068 | macro_build (&offset_expr, s, "t,o(b)", treg + 1, | |
4614d845 MR |
9069 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2], |
9070 | breg); | |
704897fb | 9071 | } |
8fc2e39e | 9072 | break; |
252b5132 RH |
9073 | |
9074 | /* New code added to support COPZ instructions. | |
9075 | This code builds table entries out of the macros in mip_opcodes. | |
9076 | R4000 uses interlocks to handle coproc delays. | |
9077 | Other chips (like the R3000) require nops to be inserted for delays. | |
9078 | ||
f72c8c98 | 9079 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
9080 | In order to fill delay slots for non-interlocked chips, |
9081 | we must have a way to specify delays based on the coprocessor. | |
9082 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
9083 | What are the side-effects of the cop instruction? | |
9084 | What cache support might we have and what are its effects? | |
9085 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 9086 | What registers are read/set/modified? |
252b5132 RH |
9087 | |
9088 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 9089 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
9090 | |
9091 | case M_COP0: | |
9092 | s = "c0"; | |
9093 | goto copz; | |
9094 | case M_COP1: | |
9095 | s = "c1"; | |
9096 | goto copz; | |
9097 | case M_COP2: | |
9098 | s = "c2"; | |
9099 | goto copz; | |
9100 | case M_COP3: | |
9101 | s = "c3"; | |
9102 | copz: | |
df58fc94 | 9103 | gas_assert (!mips_opts.micromips); |
b19e8a9b AN |
9104 | if (NO_ISA_COP (mips_opts.arch) |
9105 | && (ip->insn_mo->pinfo2 & INSN2_M_FP_S) == 0) | |
9106 | { | |
9107 | as_bad (_("opcode not supported on this processor: %s"), | |
9108 | mips_cpu_info_from_arch (mips_opts.arch)->name); | |
9109 | break; | |
9110 | } | |
9111 | ||
252b5132 RH |
9112 | /* For now we just do C (same as Cz). The parameter will be |
9113 | stored in insn_opcode by mips_ip. */ | |
67c0d1eb | 9114 | macro_build (NULL, s, "C", ip->insn_opcode); |
8fc2e39e | 9115 | break; |
252b5132 | 9116 | |
ea1fb5dc | 9117 | case M_MOVE: |
67c0d1eb | 9118 | move_register (dreg, sreg); |
8fc2e39e | 9119 | break; |
ea1fb5dc | 9120 | |
252b5132 RH |
9121 | case M_DMUL: |
9122 | dbl = 1; | |
9123 | case M_MUL: | |
67c0d1eb | 9124 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", sreg, treg); |
df58fc94 | 9125 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
8fc2e39e | 9126 | break; |
252b5132 RH |
9127 | |
9128 | case M_DMUL_I: | |
9129 | dbl = 1; | |
9130 | case M_MUL_I: | |
9131 | /* The MIPS assembler some times generates shifts and adds. I'm | |
9132 | not trying to be that fancy. GCC should do this for us | |
9133 | anyway. */ | |
8fc2e39e | 9134 | used_at = 1; |
67c0d1eb RS |
9135 | load_register (AT, &imm_expr, dbl); |
9136 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, AT); | |
df58fc94 | 9137 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
252b5132 RH |
9138 | break; |
9139 | ||
9140 | case M_DMULO_I: | |
9141 | dbl = 1; | |
9142 | case M_MULO_I: | |
9143 | imm = 1; | |
9144 | goto do_mulo; | |
9145 | ||
9146 | case M_DMULO: | |
9147 | dbl = 1; | |
9148 | case M_MULO: | |
9149 | do_mulo: | |
7d10b47d | 9150 | start_noreorder (); |
8fc2e39e | 9151 | used_at = 1; |
252b5132 | 9152 | if (imm) |
67c0d1eb RS |
9153 | load_register (AT, &imm_expr, dbl); |
9154 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); | |
df58fc94 RS |
9155 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
9156 | macro_build (NULL, dbl ? "dsra32" : "sra", SHFT_FMT, dreg, dreg, RA); | |
9157 | macro_build (NULL, "mfhi", MFHL_FMT, AT); | |
252b5132 | 9158 | if (mips_trap) |
df58fc94 | 9159 | macro_build (NULL, "tne", TRAP_FMT, dreg, AT, 6); |
252b5132 RH |
9160 | else |
9161 | { | |
df58fc94 RS |
9162 | if (mips_opts.micromips) |
9163 | micromips_label_expr (&label_expr); | |
9164 | else | |
9165 | label_expr.X_add_number = 8; | |
9166 | macro_build (&label_expr, "beq", "s,t,p", dreg, AT); | |
a605d2b3 | 9167 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
9168 | macro_build (NULL, "break", BRK_FMT, 6); |
9169 | if (mips_opts.micromips) | |
9170 | micromips_add_label (); | |
252b5132 | 9171 | } |
7d10b47d | 9172 | end_noreorder (); |
df58fc94 | 9173 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
252b5132 RH |
9174 | break; |
9175 | ||
9176 | case M_DMULOU_I: | |
9177 | dbl = 1; | |
9178 | case M_MULOU_I: | |
9179 | imm = 1; | |
9180 | goto do_mulou; | |
9181 | ||
9182 | case M_DMULOU: | |
9183 | dbl = 1; | |
9184 | case M_MULOU: | |
9185 | do_mulou: | |
7d10b47d | 9186 | start_noreorder (); |
8fc2e39e | 9187 | used_at = 1; |
252b5132 | 9188 | if (imm) |
67c0d1eb RS |
9189 | load_register (AT, &imm_expr, dbl); |
9190 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
17a2f251 | 9191 | sreg, imm ? AT : treg); |
df58fc94 RS |
9192 | macro_build (NULL, "mfhi", MFHL_FMT, AT); |
9193 | macro_build (NULL, "mflo", MFHL_FMT, dreg); | |
252b5132 | 9194 | if (mips_trap) |
df58fc94 | 9195 | macro_build (NULL, "tne", TRAP_FMT, AT, ZERO, 6); |
252b5132 RH |
9196 | else |
9197 | { | |
df58fc94 RS |
9198 | if (mips_opts.micromips) |
9199 | micromips_label_expr (&label_expr); | |
9200 | else | |
9201 | label_expr.X_add_number = 8; | |
9202 | macro_build (&label_expr, "beq", "s,t,p", AT, ZERO); | |
a605d2b3 | 9203 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
9204 | macro_build (NULL, "break", BRK_FMT, 6); |
9205 | if (mips_opts.micromips) | |
9206 | micromips_add_label (); | |
252b5132 | 9207 | } |
7d10b47d | 9208 | end_noreorder (); |
252b5132 RH |
9209 | break; |
9210 | ||
771c7ce4 | 9211 | case M_DROL: |
fef14a42 | 9212 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
9213 | { |
9214 | if (dreg == sreg) | |
9215 | { | |
9216 | tempreg = AT; | |
9217 | used_at = 1; | |
9218 | } | |
9219 | else | |
9220 | { | |
9221 | tempreg = dreg; | |
82dd0097 | 9222 | } |
67c0d1eb RS |
9223 | macro_build (NULL, "dnegu", "d,w", tempreg, treg); |
9224 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 9225 | break; |
82dd0097 | 9226 | } |
8fc2e39e | 9227 | used_at = 1; |
c80c840e | 9228 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9229 | macro_build (NULL, "dsrlv", "d,t,s", AT, sreg, AT); |
9230 | macro_build (NULL, "dsllv", "d,t,s", dreg, sreg, treg); | |
9231 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
9232 | break; |
9233 | ||
252b5132 | 9234 | case M_ROL: |
fef14a42 | 9235 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 CD |
9236 | { |
9237 | if (dreg == sreg) | |
9238 | { | |
9239 | tempreg = AT; | |
9240 | used_at = 1; | |
9241 | } | |
9242 | else | |
9243 | { | |
9244 | tempreg = dreg; | |
82dd0097 | 9245 | } |
67c0d1eb RS |
9246 | macro_build (NULL, "negu", "d,w", tempreg, treg); |
9247 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 9248 | break; |
82dd0097 | 9249 | } |
8fc2e39e | 9250 | used_at = 1; |
c80c840e | 9251 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9252 | macro_build (NULL, "srlv", "d,t,s", AT, sreg, AT); |
9253 | macro_build (NULL, "sllv", "d,t,s", dreg, sreg, treg); | |
9254 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9255 | break; |
9256 | ||
771c7ce4 TS |
9257 | case M_DROL_I: |
9258 | { | |
9259 | unsigned int rot; | |
91d6fa6a NC |
9260 | char *l; |
9261 | char *rr; | |
771c7ce4 TS |
9262 | |
9263 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9264 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9265 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 9266 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
9267 | { |
9268 | rot = (64 - rot) & 0x3f; | |
9269 | if (rot >= 32) | |
df58fc94 | 9270 | macro_build (NULL, "dror32", SHFT_FMT, dreg, sreg, rot - 32); |
60b63b72 | 9271 | else |
df58fc94 | 9272 | macro_build (NULL, "dror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9273 | break; |
60b63b72 | 9274 | } |
483fc7cd | 9275 | if (rot == 0) |
483fc7cd | 9276 | { |
df58fc94 | 9277 | macro_build (NULL, "dsrl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9278 | break; |
483fc7cd | 9279 | } |
82dd0097 | 9280 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
91d6fa6a | 9281 | rr = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 | 9282 | rot &= 0x1f; |
8fc2e39e | 9283 | used_at = 1; |
df58fc94 RS |
9284 | macro_build (NULL, l, SHFT_FMT, AT, sreg, rot); |
9285 | macro_build (NULL, rr, SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9286 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9287 | } |
9288 | break; | |
9289 | ||
252b5132 | 9290 | case M_ROL_I: |
771c7ce4 TS |
9291 | { |
9292 | unsigned int rot; | |
9293 | ||
9294 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9295 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9296 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 9297 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 9298 | { |
df58fc94 | 9299 | macro_build (NULL, "ror", SHFT_FMT, dreg, sreg, (32 - rot) & 0x1f); |
8fc2e39e | 9300 | break; |
60b63b72 | 9301 | } |
483fc7cd | 9302 | if (rot == 0) |
483fc7cd | 9303 | { |
df58fc94 | 9304 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9305 | break; |
483fc7cd | 9306 | } |
8fc2e39e | 9307 | used_at = 1; |
df58fc94 RS |
9308 | macro_build (NULL, "sll", SHFT_FMT, AT, sreg, rot); |
9309 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9310 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9311 | } |
9312 | break; | |
9313 | ||
9314 | case M_DROR: | |
fef14a42 | 9315 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 9316 | { |
67c0d1eb | 9317 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 9318 | break; |
82dd0097 | 9319 | } |
8fc2e39e | 9320 | used_at = 1; |
c80c840e | 9321 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9322 | macro_build (NULL, "dsllv", "d,t,s", AT, sreg, AT); |
9323 | macro_build (NULL, "dsrlv", "d,t,s", dreg, sreg, treg); | |
9324 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9325 | break; |
9326 | ||
9327 | case M_ROR: | |
fef14a42 | 9328 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 9329 | { |
67c0d1eb | 9330 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 9331 | break; |
82dd0097 | 9332 | } |
8fc2e39e | 9333 | used_at = 1; |
c80c840e | 9334 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9335 | macro_build (NULL, "sllv", "d,t,s", AT, sreg, AT); |
9336 | macro_build (NULL, "srlv", "d,t,s", dreg, sreg, treg); | |
9337 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9338 | break; |
9339 | ||
771c7ce4 TS |
9340 | case M_DROR_I: |
9341 | { | |
9342 | unsigned int rot; | |
91d6fa6a NC |
9343 | char *l; |
9344 | char *rr; | |
771c7ce4 TS |
9345 | |
9346 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9347 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9348 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 9349 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
9350 | { |
9351 | if (rot >= 32) | |
df58fc94 | 9352 | macro_build (NULL, "dror32", SHFT_FMT, dreg, sreg, rot - 32); |
82dd0097 | 9353 | else |
df58fc94 | 9354 | macro_build (NULL, "dror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9355 | break; |
82dd0097 | 9356 | } |
483fc7cd | 9357 | if (rot == 0) |
483fc7cd | 9358 | { |
df58fc94 | 9359 | macro_build (NULL, "dsrl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9360 | break; |
483fc7cd | 9361 | } |
91d6fa6a | 9362 | rr = (rot < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 CD |
9363 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; |
9364 | rot &= 0x1f; | |
8fc2e39e | 9365 | used_at = 1; |
df58fc94 RS |
9366 | macro_build (NULL, rr, SHFT_FMT, AT, sreg, rot); |
9367 | macro_build (NULL, l, SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9368 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9369 | } |
9370 | break; | |
9371 | ||
252b5132 | 9372 | case M_ROR_I: |
771c7ce4 TS |
9373 | { |
9374 | unsigned int rot; | |
9375 | ||
9376 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9377 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9378 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 9379 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 9380 | { |
df58fc94 | 9381 | macro_build (NULL, "ror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9382 | break; |
82dd0097 | 9383 | } |
483fc7cd | 9384 | if (rot == 0) |
483fc7cd | 9385 | { |
df58fc94 | 9386 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9387 | break; |
483fc7cd | 9388 | } |
8fc2e39e | 9389 | used_at = 1; |
df58fc94 RS |
9390 | macro_build (NULL, "srl", SHFT_FMT, AT, sreg, rot); |
9391 | macro_build (NULL, "sll", SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9392 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 | 9393 | } |
252b5132 RH |
9394 | break; |
9395 | ||
252b5132 RH |
9396 | case M_SEQ: |
9397 | if (sreg == 0) | |
67c0d1eb | 9398 | macro_build (&expr1, "sltiu", "t,r,j", dreg, treg, BFD_RELOC_LO16); |
252b5132 | 9399 | else if (treg == 0) |
67c0d1eb | 9400 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9401 | else |
9402 | { | |
67c0d1eb RS |
9403 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
9404 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 | 9405 | } |
8fc2e39e | 9406 | break; |
252b5132 RH |
9407 | |
9408 | case M_SEQ_I: | |
9409 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
9410 | { | |
67c0d1eb | 9411 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9412 | break; |
252b5132 RH |
9413 | } |
9414 | if (sreg == 0) | |
9415 | { | |
9416 | as_warn (_("Instruction %s: result is always false"), | |
9417 | ip->insn_mo->name); | |
67c0d1eb | 9418 | move_register (dreg, 0); |
8fc2e39e | 9419 | break; |
252b5132 | 9420 | } |
dd3cbb7e NC |
9421 | if (CPU_HAS_SEQ (mips_opts.arch) |
9422 | && -512 <= imm_expr.X_add_number | |
9423 | && imm_expr.X_add_number < 512) | |
9424 | { | |
9425 | macro_build (NULL, "seqi", "t,r,+Q", dreg, sreg, | |
750bdd57 | 9426 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
9427 | break; |
9428 | } | |
252b5132 RH |
9429 | if (imm_expr.X_op == O_constant |
9430 | && imm_expr.X_add_number >= 0 | |
9431 | && imm_expr.X_add_number < 0x10000) | |
9432 | { | |
67c0d1eb | 9433 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9434 | } |
9435 | else if (imm_expr.X_op == O_constant | |
9436 | && imm_expr.X_add_number > -0x8000 | |
9437 | && imm_expr.X_add_number < 0) | |
9438 | { | |
9439 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9440 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 9441 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 9442 | } |
dd3cbb7e NC |
9443 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
9444 | { | |
9445 | used_at = 1; | |
9446 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
9447 | macro_build (NULL, "seq", "d,v,t", dreg, sreg, AT); | |
9448 | break; | |
9449 | } | |
252b5132 RH |
9450 | else |
9451 | { | |
67c0d1eb RS |
9452 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9453 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9454 | used_at = 1; |
9455 | } | |
67c0d1eb | 9456 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 9457 | break; |
252b5132 RH |
9458 | |
9459 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
9460 | s = "slt"; | |
9461 | goto sge; | |
9462 | case M_SGEU: | |
9463 | s = "sltu"; | |
9464 | sge: | |
67c0d1eb RS |
9465 | macro_build (NULL, s, "d,v,t", dreg, sreg, treg); |
9466 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 9467 | break; |
252b5132 RH |
9468 | |
9469 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
9470 | case M_SGEU_I: | |
9471 | if (imm_expr.X_op == O_constant | |
9472 | && imm_expr.X_add_number >= -0x8000 | |
9473 | && imm_expr.X_add_number < 0x8000) | |
9474 | { | |
67c0d1eb RS |
9475 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
9476 | dreg, sreg, BFD_RELOC_LO16); | |
252b5132 RH |
9477 | } |
9478 | else | |
9479 | { | |
67c0d1eb RS |
9480 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9481 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", | |
9482 | dreg, sreg, AT); | |
252b5132 RH |
9483 | used_at = 1; |
9484 | } | |
67c0d1eb | 9485 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 9486 | break; |
252b5132 RH |
9487 | |
9488 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
9489 | s = "slt"; | |
9490 | goto sgt; | |
9491 | case M_SGTU: | |
9492 | s = "sltu"; | |
9493 | sgt: | |
67c0d1eb | 9494 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
8fc2e39e | 9495 | break; |
252b5132 RH |
9496 | |
9497 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
9498 | s = "slt"; | |
9499 | goto sgti; | |
9500 | case M_SGTU_I: | |
9501 | s = "sltu"; | |
9502 | sgti: | |
8fc2e39e | 9503 | used_at = 1; |
67c0d1eb RS |
9504 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9505 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
252b5132 RH |
9506 | break; |
9507 | ||
2396cfb9 | 9508 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
9509 | s = "slt"; |
9510 | goto sle; | |
9511 | case M_SLEU: | |
9512 | s = "sltu"; | |
9513 | sle: | |
67c0d1eb RS |
9514 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
9515 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 9516 | break; |
252b5132 | 9517 | |
2396cfb9 | 9518 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
9519 | s = "slt"; |
9520 | goto slei; | |
9521 | case M_SLEU_I: | |
9522 | s = "sltu"; | |
9523 | slei: | |
8fc2e39e | 9524 | used_at = 1; |
67c0d1eb RS |
9525 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9526 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
9527 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 RH |
9528 | break; |
9529 | ||
9530 | case M_SLT_I: | |
9531 | if (imm_expr.X_op == O_constant | |
9532 | && imm_expr.X_add_number >= -0x8000 | |
9533 | && imm_expr.X_add_number < 0x8000) | |
9534 | { | |
67c0d1eb | 9535 | macro_build (&imm_expr, "slti", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9536 | break; |
252b5132 | 9537 | } |
8fc2e39e | 9538 | used_at = 1; |
67c0d1eb RS |
9539 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9540 | macro_build (NULL, "slt", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9541 | break; |
9542 | ||
9543 | case M_SLTU_I: | |
9544 | if (imm_expr.X_op == O_constant | |
9545 | && imm_expr.X_add_number >= -0x8000 | |
9546 | && imm_expr.X_add_number < 0x8000) | |
9547 | { | |
67c0d1eb | 9548 | macro_build (&imm_expr, "sltiu", "t,r,j", dreg, sreg, |
17a2f251 | 9549 | BFD_RELOC_LO16); |
8fc2e39e | 9550 | break; |
252b5132 | 9551 | } |
8fc2e39e | 9552 | used_at = 1; |
67c0d1eb RS |
9553 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9554 | macro_build (NULL, "sltu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9555 | break; |
9556 | ||
9557 | case M_SNE: | |
9558 | if (sreg == 0) | |
67c0d1eb | 9559 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, treg); |
252b5132 | 9560 | else if (treg == 0) |
67c0d1eb | 9561 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
9562 | else |
9563 | { | |
67c0d1eb RS |
9564 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
9565 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); | |
252b5132 | 9566 | } |
8fc2e39e | 9567 | break; |
252b5132 RH |
9568 | |
9569 | case M_SNE_I: | |
9570 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
9571 | { | |
67c0d1eb | 9572 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
8fc2e39e | 9573 | break; |
252b5132 RH |
9574 | } |
9575 | if (sreg == 0) | |
9576 | { | |
9577 | as_warn (_("Instruction %s: result is always true"), | |
9578 | ip->insn_mo->name); | |
67c0d1eb RS |
9579 | macro_build (&expr1, HAVE_32BIT_GPRS ? "addiu" : "daddiu", "t,r,j", |
9580 | dreg, 0, BFD_RELOC_LO16); | |
8fc2e39e | 9581 | break; |
252b5132 | 9582 | } |
dd3cbb7e NC |
9583 | if (CPU_HAS_SEQ (mips_opts.arch) |
9584 | && -512 <= imm_expr.X_add_number | |
9585 | && imm_expr.X_add_number < 512) | |
9586 | { | |
9587 | macro_build (NULL, "snei", "t,r,+Q", dreg, sreg, | |
750bdd57 | 9588 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
9589 | break; |
9590 | } | |
252b5132 RH |
9591 | if (imm_expr.X_op == O_constant |
9592 | && imm_expr.X_add_number >= 0 | |
9593 | && imm_expr.X_add_number < 0x10000) | |
9594 | { | |
67c0d1eb | 9595 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9596 | } |
9597 | else if (imm_expr.X_op == O_constant | |
9598 | && imm_expr.X_add_number > -0x8000 | |
9599 | && imm_expr.X_add_number < 0) | |
9600 | { | |
9601 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9602 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 9603 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 9604 | } |
dd3cbb7e NC |
9605 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
9606 | { | |
9607 | used_at = 1; | |
9608 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
9609 | macro_build (NULL, "sne", "d,v,t", dreg, sreg, AT); | |
9610 | break; | |
9611 | } | |
252b5132 RH |
9612 | else |
9613 | { | |
67c0d1eb RS |
9614 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9615 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9616 | used_at = 1; |
9617 | } | |
67c0d1eb | 9618 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); |
8fc2e39e | 9619 | break; |
252b5132 | 9620 | |
df58fc94 RS |
9621 | case M_SUB_I: |
9622 | s = "addi"; | |
9623 | s2 = "sub"; | |
9624 | goto do_subi; | |
9625 | case M_SUBU_I: | |
9626 | s = "addiu"; | |
9627 | s2 = "subu"; | |
9628 | goto do_subi; | |
252b5132 RH |
9629 | case M_DSUB_I: |
9630 | dbl = 1; | |
df58fc94 RS |
9631 | s = "daddi"; |
9632 | s2 = "dsub"; | |
9633 | if (!mips_opts.micromips) | |
9634 | goto do_subi; | |
252b5132 | 9635 | if (imm_expr.X_op == O_constant |
df58fc94 RS |
9636 | && imm_expr.X_add_number > -0x200 |
9637 | && imm_expr.X_add_number <= 0x200) | |
252b5132 | 9638 | { |
df58fc94 | 9639 | macro_build (NULL, s, "t,r,.", dreg, sreg, -imm_expr.X_add_number); |
8fc2e39e | 9640 | break; |
252b5132 | 9641 | } |
df58fc94 | 9642 | goto do_subi_i; |
252b5132 RH |
9643 | case M_DSUBU_I: |
9644 | dbl = 1; | |
df58fc94 RS |
9645 | s = "daddiu"; |
9646 | s2 = "dsubu"; | |
9647 | do_subi: | |
252b5132 RH |
9648 | if (imm_expr.X_op == O_constant |
9649 | && imm_expr.X_add_number > -0x8000 | |
9650 | && imm_expr.X_add_number <= 0x8000) | |
9651 | { | |
9652 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
df58fc94 | 9653 | macro_build (&imm_expr, s, "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9654 | break; |
252b5132 | 9655 | } |
df58fc94 | 9656 | do_subi_i: |
8fc2e39e | 9657 | used_at = 1; |
67c0d1eb | 9658 | load_register (AT, &imm_expr, dbl); |
df58fc94 | 9659 | macro_build (NULL, s2, "d,v,t", dreg, sreg, AT); |
252b5132 RH |
9660 | break; |
9661 | ||
9662 | case M_TEQ_I: | |
9663 | s = "teq"; | |
9664 | goto trap; | |
9665 | case M_TGE_I: | |
9666 | s = "tge"; | |
9667 | goto trap; | |
9668 | case M_TGEU_I: | |
9669 | s = "tgeu"; | |
9670 | goto trap; | |
9671 | case M_TLT_I: | |
9672 | s = "tlt"; | |
9673 | goto trap; | |
9674 | case M_TLTU_I: | |
9675 | s = "tltu"; | |
9676 | goto trap; | |
9677 | case M_TNE_I: | |
9678 | s = "tne"; | |
9679 | trap: | |
8fc2e39e | 9680 | used_at = 1; |
67c0d1eb RS |
9681 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9682 | macro_build (NULL, s, "s,t", sreg, AT); | |
252b5132 RH |
9683 | break; |
9684 | ||
252b5132 | 9685 | case M_TRUNCWS: |
43841e91 | 9686 | case M_TRUNCWD: |
df58fc94 | 9687 | gas_assert (!mips_opts.micromips); |
9c2799c2 | 9688 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 9689 | used_at = 1; |
252b5132 RH |
9690 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
9691 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
9692 | ||
9693 | /* | |
9694 | * Is the double cfc1 instruction a bug in the mips assembler; | |
9695 | * or is there a reason for it? | |
9696 | */ | |
7d10b47d | 9697 | start_noreorder (); |
67c0d1eb RS |
9698 | macro_build (NULL, "cfc1", "t,G", treg, RA); |
9699 | macro_build (NULL, "cfc1", "t,G", treg, RA); | |
9700 | macro_build (NULL, "nop", ""); | |
252b5132 | 9701 | expr1.X_add_number = 3; |
67c0d1eb | 9702 | macro_build (&expr1, "ori", "t,r,i", AT, treg, BFD_RELOC_LO16); |
252b5132 | 9703 | expr1.X_add_number = 2; |
67c0d1eb RS |
9704 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
9705 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
9706 | macro_build (NULL, "nop", ""); | |
9707 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
9708 | dreg, sreg); | |
9709 | macro_build (NULL, "ctc1", "t,G", treg, RA); | |
9710 | macro_build (NULL, "nop", ""); | |
7d10b47d | 9711 | end_noreorder (); |
252b5132 RH |
9712 | break; |
9713 | ||
df58fc94 RS |
9714 | case M_ULH_A: |
9715 | ab = 1; | |
252b5132 RH |
9716 | case M_ULH: |
9717 | s = "lb"; | |
df58fc94 RS |
9718 | s2 = "lbu"; |
9719 | off = 1; | |
9720 | goto uld_st; | |
9721 | case M_ULHU_A: | |
9722 | ab = 1; | |
252b5132 RH |
9723 | case M_ULHU: |
9724 | s = "lbu"; | |
df58fc94 RS |
9725 | s2 = "lbu"; |
9726 | off = 1; | |
9727 | goto uld_st; | |
9728 | case M_ULW_A: | |
9729 | ab = 1; | |
9730 | case M_ULW: | |
9731 | s = "lwl"; | |
9732 | s2 = "lwr"; | |
9733 | off12 = mips_opts.micromips; | |
9734 | off = 3; | |
9735 | goto uld_st; | |
9736 | case M_ULD_A: | |
9737 | ab = 1; | |
252b5132 RH |
9738 | case M_ULD: |
9739 | s = "ldl"; | |
9740 | s2 = "ldr"; | |
df58fc94 | 9741 | off12 = mips_opts.micromips; |
252b5132 | 9742 | off = 7; |
df58fc94 RS |
9743 | goto uld_st; |
9744 | case M_USH_A: | |
9745 | ab = 1; | |
9746 | case M_USH: | |
9747 | s = "sb"; | |
9748 | s2 = "sb"; | |
9749 | off = 1; | |
9750 | ust = 1; | |
9751 | goto uld_st; | |
9752 | case M_USW_A: | |
9753 | ab = 1; | |
9754 | case M_USW: | |
9755 | s = "swl"; | |
9756 | s2 = "swr"; | |
9757 | off12 = mips_opts.micromips; | |
252b5132 | 9758 | off = 3; |
df58fc94 RS |
9759 | ust = 1; |
9760 | goto uld_st; | |
9761 | case M_USD_A: | |
9762 | ab = 1; | |
9763 | case M_USD: | |
9764 | s = "sdl"; | |
9765 | s2 = "sdr"; | |
9766 | off12 = mips_opts.micromips; | |
9767 | off = 7; | |
9768 | ust = 1; | |
9769 | ||
9770 | uld_st: | |
9771 | if (!ab && offset_expr.X_add_number >= 0x8000 - off) | |
f71d0d44 | 9772 | as_bad (_("Operand overflow")); |
df58fc94 RS |
9773 | |
9774 | ep = &offset_expr; | |
9775 | expr1.X_add_number = 0; | |
9776 | if (ab) | |
9777 | { | |
9778 | used_at = 1; | |
9779 | tempreg = AT; | |
9780 | load_address (tempreg, ep, &used_at); | |
9781 | if (breg != 0) | |
9782 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
9783 | tempreg, tempreg, breg); | |
9784 | breg = tempreg; | |
9785 | tempreg = treg; | |
9786 | ep = &expr1; | |
9787 | } | |
9788 | else if (off12 | |
9789 | && (offset_expr.X_op != O_constant | |
9790 | || !IS_SEXT_12BIT_NUM (offset_expr.X_add_number) | |
9791 | || !IS_SEXT_12BIT_NUM (offset_expr.X_add_number + off))) | |
9792 | { | |
9793 | used_at = 1; | |
9794 | tempreg = AT; | |
9795 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", tempreg, breg, | |
9796 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
9797 | breg = tempreg; | |
9798 | tempreg = treg; | |
9799 | ep = &expr1; | |
9800 | } | |
9801 | else if (!ust && treg == breg) | |
8fc2e39e TS |
9802 | { |
9803 | used_at = 1; | |
9804 | tempreg = AT; | |
9805 | } | |
252b5132 | 9806 | else |
df58fc94 | 9807 | tempreg = treg; |
af22f5b2 | 9808 | |
df58fc94 RS |
9809 | if (off == 1) |
9810 | goto ulh_sh; | |
252b5132 | 9811 | |
90ecf173 | 9812 | if (!target_big_endian) |
df58fc94 RS |
9813 | ep->X_add_number += off; |
9814 | if (!off12) | |
9815 | macro_build (ep, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
252b5132 | 9816 | else |
df58fc94 RS |
9817 | macro_build (NULL, s, "t,~(b)", |
9818 | tempreg, (unsigned long) ep->X_add_number, breg); | |
9819 | ||
90ecf173 | 9820 | if (!target_big_endian) |
df58fc94 | 9821 | ep->X_add_number -= off; |
252b5132 | 9822 | else |
df58fc94 RS |
9823 | ep->X_add_number += off; |
9824 | if (!off12) | |
9825 | macro_build (ep, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
9826 | else | |
9827 | macro_build (NULL, s2, "t,~(b)", | |
9828 | tempreg, (unsigned long) ep->X_add_number, breg); | |
252b5132 | 9829 | |
df58fc94 RS |
9830 | /* If necessary, move the result in tempreg to the final destination. */ |
9831 | if (!ust && treg != tempreg) | |
9832 | { | |
9833 | /* Protect second load's delay slot. */ | |
9834 | load_delay_nop (); | |
9835 | move_register (treg, tempreg); | |
9836 | } | |
8fc2e39e | 9837 | break; |
252b5132 | 9838 | |
df58fc94 | 9839 | ulh_sh: |
d6bc6245 | 9840 | used_at = 1; |
df58fc94 RS |
9841 | if (target_big_endian == ust) |
9842 | ep->X_add_number += off; | |
9843 | tempreg = ust || ab ? treg : AT; | |
9844 | macro_build (ep, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
9845 | ||
9846 | /* For halfword transfers we need a temporary register to shuffle | |
9847 | bytes. Unfortunately for M_USH_A we have none available before | |
9848 | the next store as AT holds the base address. We deal with this | |
9849 | case by clobbering TREG and then restoring it as with ULH. */ | |
9850 | tempreg = ust == ab ? treg : AT; | |
9851 | if (ust) | |
9852 | macro_build (NULL, "srl", SHFT_FMT, tempreg, treg, 8); | |
9853 | ||
9854 | if (target_big_endian == ust) | |
9855 | ep->X_add_number -= off; | |
252b5132 | 9856 | else |
df58fc94 RS |
9857 | ep->X_add_number += off; |
9858 | macro_build (ep, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
252b5132 | 9859 | |
df58fc94 RS |
9860 | /* For M_USH_A re-retrieve the LSB. */ |
9861 | if (ust && ab) | |
9862 | { | |
9863 | if (target_big_endian) | |
9864 | ep->X_add_number += off; | |
9865 | else | |
9866 | ep->X_add_number -= off; | |
9867 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); | |
9868 | } | |
9869 | /* For ULH and M_USH_A OR the LSB in. */ | |
9870 | if (!ust || ab) | |
9871 | { | |
9872 | tempreg = !ab ? AT : treg; | |
9873 | macro_build (NULL, "sll", SHFT_FMT, tempreg, tempreg, 8); | |
9874 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
9875 | } | |
252b5132 RH |
9876 | break; |
9877 | ||
9878 | default: | |
9879 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 9880 | are added dynamically. */ |
252b5132 RH |
9881 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
9882 | break; | |
9883 | } | |
741fe287 | 9884 | if (!mips_opts.at && used_at) |
8fc2e39e | 9885 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
9886 | } |
9887 | ||
9888 | /* Implement macros in mips16 mode. */ | |
9889 | ||
9890 | static void | |
17a2f251 | 9891 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 RH |
9892 | { |
9893 | int mask; | |
9894 | int xreg, yreg, zreg, tmp; | |
252b5132 RH |
9895 | expressionS expr1; |
9896 | int dbl; | |
9897 | const char *s, *s2, *s3; | |
9898 | ||
9899 | mask = ip->insn_mo->mask; | |
9900 | ||
bf12938e RS |
9901 | xreg = MIPS16_EXTRACT_OPERAND (RX, *ip); |
9902 | yreg = MIPS16_EXTRACT_OPERAND (RY, *ip); | |
9903 | zreg = MIPS16_EXTRACT_OPERAND (RZ, *ip); | |
252b5132 | 9904 | |
252b5132 RH |
9905 | expr1.X_op = O_constant; |
9906 | expr1.X_op_symbol = NULL; | |
9907 | expr1.X_add_symbol = NULL; | |
9908 | expr1.X_add_number = 1; | |
9909 | ||
9910 | dbl = 0; | |
9911 | ||
9912 | switch (mask) | |
9913 | { | |
9914 | default: | |
9915 | internalError (); | |
9916 | ||
9917 | case M_DDIV_3: | |
9918 | dbl = 1; | |
9919 | case M_DIV_3: | |
9920 | s = "mflo"; | |
9921 | goto do_div3; | |
9922 | case M_DREM_3: | |
9923 | dbl = 1; | |
9924 | case M_REM_3: | |
9925 | s = "mfhi"; | |
9926 | do_div3: | |
7d10b47d | 9927 | start_noreorder (); |
67c0d1eb | 9928 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", xreg, yreg); |
252b5132 | 9929 | expr1.X_add_number = 2; |
67c0d1eb RS |
9930 | macro_build (&expr1, "bnez", "x,p", yreg); |
9931 | macro_build (NULL, "break", "6", 7); | |
bdaaa2e1 | 9932 | |
252b5132 RH |
9933 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
9934 | since that causes an overflow. We should do that as well, | |
9935 | but I don't see how to do the comparisons without a temporary | |
9936 | register. */ | |
7d10b47d | 9937 | end_noreorder (); |
67c0d1eb | 9938 | macro_build (NULL, s, "x", zreg); |
252b5132 RH |
9939 | break; |
9940 | ||
9941 | case M_DIVU_3: | |
9942 | s = "divu"; | |
9943 | s2 = "mflo"; | |
9944 | goto do_divu3; | |
9945 | case M_REMU_3: | |
9946 | s = "divu"; | |
9947 | s2 = "mfhi"; | |
9948 | goto do_divu3; | |
9949 | case M_DDIVU_3: | |
9950 | s = "ddivu"; | |
9951 | s2 = "mflo"; | |
9952 | goto do_divu3; | |
9953 | case M_DREMU_3: | |
9954 | s = "ddivu"; | |
9955 | s2 = "mfhi"; | |
9956 | do_divu3: | |
7d10b47d | 9957 | start_noreorder (); |
67c0d1eb | 9958 | macro_build (NULL, s, "0,x,y", xreg, yreg); |
252b5132 | 9959 | expr1.X_add_number = 2; |
67c0d1eb RS |
9960 | macro_build (&expr1, "bnez", "x,p", yreg); |
9961 | macro_build (NULL, "break", "6", 7); | |
7d10b47d | 9962 | end_noreorder (); |
67c0d1eb | 9963 | macro_build (NULL, s2, "x", zreg); |
252b5132 RH |
9964 | break; |
9965 | ||
9966 | case M_DMUL: | |
9967 | dbl = 1; | |
9968 | case M_MUL: | |
67c0d1eb RS |
9969 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
9970 | macro_build (NULL, "mflo", "x", zreg); | |
8fc2e39e | 9971 | break; |
252b5132 RH |
9972 | |
9973 | case M_DSUBU_I: | |
9974 | dbl = 1; | |
9975 | goto do_subu; | |
9976 | case M_SUBU_I: | |
9977 | do_subu: | |
9978 | if (imm_expr.X_op != O_constant) | |
9979 | as_bad (_("Unsupported large constant")); | |
9980 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9981 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
9982 | break; |
9983 | ||
9984 | case M_SUBU_I_2: | |
9985 | if (imm_expr.X_op != O_constant) | |
9986 | as_bad (_("Unsupported large constant")); | |
9987 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9988 | macro_build (&imm_expr, "addiu", "x,k", xreg); |
252b5132 RH |
9989 | break; |
9990 | ||
9991 | case M_DSUBU_I_2: | |
9992 | if (imm_expr.X_op != O_constant) | |
9993 | as_bad (_("Unsupported large constant")); | |
9994 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9995 | macro_build (&imm_expr, "daddiu", "y,j", yreg); |
252b5132 RH |
9996 | break; |
9997 | ||
9998 | case M_BEQ: | |
9999 | s = "cmp"; | |
10000 | s2 = "bteqz"; | |
10001 | goto do_branch; | |
10002 | case M_BNE: | |
10003 | s = "cmp"; | |
10004 | s2 = "btnez"; | |
10005 | goto do_branch; | |
10006 | case M_BLT: | |
10007 | s = "slt"; | |
10008 | s2 = "btnez"; | |
10009 | goto do_branch; | |
10010 | case M_BLTU: | |
10011 | s = "sltu"; | |
10012 | s2 = "btnez"; | |
10013 | goto do_branch; | |
10014 | case M_BLE: | |
10015 | s = "slt"; | |
10016 | s2 = "bteqz"; | |
10017 | goto do_reverse_branch; | |
10018 | case M_BLEU: | |
10019 | s = "sltu"; | |
10020 | s2 = "bteqz"; | |
10021 | goto do_reverse_branch; | |
10022 | case M_BGE: | |
10023 | s = "slt"; | |
10024 | s2 = "bteqz"; | |
10025 | goto do_branch; | |
10026 | case M_BGEU: | |
10027 | s = "sltu"; | |
10028 | s2 = "bteqz"; | |
10029 | goto do_branch; | |
10030 | case M_BGT: | |
10031 | s = "slt"; | |
10032 | s2 = "btnez"; | |
10033 | goto do_reverse_branch; | |
10034 | case M_BGTU: | |
10035 | s = "sltu"; | |
10036 | s2 = "btnez"; | |
10037 | ||
10038 | do_reverse_branch: | |
10039 | tmp = xreg; | |
10040 | xreg = yreg; | |
10041 | yreg = tmp; | |
10042 | ||
10043 | do_branch: | |
67c0d1eb RS |
10044 | macro_build (NULL, s, "x,y", xreg, yreg); |
10045 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
10046 | break; |
10047 | ||
10048 | case M_BEQ_I: | |
10049 | s = "cmpi"; | |
10050 | s2 = "bteqz"; | |
10051 | s3 = "x,U"; | |
10052 | goto do_branch_i; | |
10053 | case M_BNE_I: | |
10054 | s = "cmpi"; | |
10055 | s2 = "btnez"; | |
10056 | s3 = "x,U"; | |
10057 | goto do_branch_i; | |
10058 | case M_BLT_I: | |
10059 | s = "slti"; | |
10060 | s2 = "btnez"; | |
10061 | s3 = "x,8"; | |
10062 | goto do_branch_i; | |
10063 | case M_BLTU_I: | |
10064 | s = "sltiu"; | |
10065 | s2 = "btnez"; | |
10066 | s3 = "x,8"; | |
10067 | goto do_branch_i; | |
10068 | case M_BLE_I: | |
10069 | s = "slti"; | |
10070 | s2 = "btnez"; | |
10071 | s3 = "x,8"; | |
10072 | goto do_addone_branch_i; | |
10073 | case M_BLEU_I: | |
10074 | s = "sltiu"; | |
10075 | s2 = "btnez"; | |
10076 | s3 = "x,8"; | |
10077 | goto do_addone_branch_i; | |
10078 | case M_BGE_I: | |
10079 | s = "slti"; | |
10080 | s2 = "bteqz"; | |
10081 | s3 = "x,8"; | |
10082 | goto do_branch_i; | |
10083 | case M_BGEU_I: | |
10084 | s = "sltiu"; | |
10085 | s2 = "bteqz"; | |
10086 | s3 = "x,8"; | |
10087 | goto do_branch_i; | |
10088 | case M_BGT_I: | |
10089 | s = "slti"; | |
10090 | s2 = "bteqz"; | |
10091 | s3 = "x,8"; | |
10092 | goto do_addone_branch_i; | |
10093 | case M_BGTU_I: | |
10094 | s = "sltiu"; | |
10095 | s2 = "bteqz"; | |
10096 | s3 = "x,8"; | |
10097 | ||
10098 | do_addone_branch_i: | |
10099 | if (imm_expr.X_op != O_constant) | |
10100 | as_bad (_("Unsupported large constant")); | |
10101 | ++imm_expr.X_add_number; | |
10102 | ||
10103 | do_branch_i: | |
67c0d1eb RS |
10104 | macro_build (&imm_expr, s, s3, xreg); |
10105 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
10106 | break; |
10107 | ||
10108 | case M_ABS: | |
10109 | expr1.X_add_number = 0; | |
67c0d1eb | 10110 | macro_build (&expr1, "slti", "x,8", yreg); |
252b5132 | 10111 | if (xreg != yreg) |
67c0d1eb | 10112 | move_register (xreg, yreg); |
252b5132 | 10113 | expr1.X_add_number = 2; |
67c0d1eb RS |
10114 | macro_build (&expr1, "bteqz", "p"); |
10115 | macro_build (NULL, "neg", "x,w", xreg, xreg); | |
252b5132 RH |
10116 | } |
10117 | } | |
10118 | ||
10119 | /* For consistency checking, verify that all bits are specified either | |
10120 | by the match/mask part of the instruction definition, or by the | |
10121 | operand list. */ | |
10122 | static int | |
17a2f251 | 10123 | validate_mips_insn (const struct mips_opcode *opc) |
252b5132 RH |
10124 | { |
10125 | const char *p = opc->args; | |
10126 | char c; | |
10127 | unsigned long used_bits = opc->mask; | |
10128 | ||
10129 | if ((used_bits & opc->match) != opc->match) | |
10130 | { | |
10131 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
10132 | opc->name, opc->args); | |
10133 | return 0; | |
10134 | } | |
10135 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
10136 | while (*p) | |
10137 | switch (c = *p++) | |
10138 | { | |
10139 | case ',': break; | |
10140 | case '(': break; | |
10141 | case ')': break; | |
af7ee8bf CD |
10142 | case '+': |
10143 | switch (c = *p++) | |
10144 | { | |
9bcd4f99 TS |
10145 | case '1': USE_BITS (OP_MASK_UDI1, OP_SH_UDI1); break; |
10146 | case '2': USE_BITS (OP_MASK_UDI2, OP_SH_UDI2); break; | |
10147 | case '3': USE_BITS (OP_MASK_UDI3, OP_SH_UDI3); break; | |
10148 | case '4': USE_BITS (OP_MASK_UDI4, OP_SH_UDI4); break; | |
af7ee8bf CD |
10149 | case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10150 | case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
10151 | case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
bbcc0807 CD |
10152 | case 'D': USE_BITS (OP_MASK_RD, OP_SH_RD); |
10153 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
5f74bc13 CD |
10154 | case 'E': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10155 | case 'F': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
10156 | case 'G': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
10157 | case 'H': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
10158 | case 'I': break; | |
ef2e4d86 CF |
10159 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; |
10160 | case 'T': USE_BITS (OP_MASK_RT, OP_SH_RT); | |
10161 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
bb35fb24 NC |
10162 | case 'x': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; |
10163 | case 'X': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; | |
10164 | case 'p': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
10165 | case 'P': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
dd3cbb7e | 10166 | case 'Q': USE_BITS (OP_MASK_SEQI, OP_SH_SEQI); break; |
bb35fb24 NC |
10167 | case 's': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; |
10168 | case 'S': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; | |
98675402 RS |
10169 | case 'z': USE_BITS (OP_MASK_RZ, OP_SH_RZ); break; |
10170 | case 'Z': USE_BITS (OP_MASK_FZ, OP_SH_FZ); break; | |
10171 | case 'a': USE_BITS (OP_MASK_OFFSET_A, OP_SH_OFFSET_A); break; | |
10172 | case 'b': USE_BITS (OP_MASK_OFFSET_B, OP_SH_OFFSET_B); break; | |
10173 | case 'c': USE_BITS (OP_MASK_OFFSET_C, OP_SH_OFFSET_C); break; | |
bb35fb24 | 10174 | |
af7ee8bf CD |
10175 | default: |
10176 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
10177 | c, opc->name, opc->args); | |
10178 | return 0; | |
10179 | } | |
10180 | break; | |
252b5132 RH |
10181 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10182 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
10183 | case 'A': break; | |
4372b673 | 10184 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
10185 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
10186 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
10187 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10188 | case 'F': break; | |
10189 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 10190 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 10191 | case 'I': break; |
e972090a | 10192 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
af7ee8bf | 10193 | case 'K': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
10194 | case 'L': break; |
10195 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
10196 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
10197 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
10198 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
10199 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
10200 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
10201 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10202 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
10203 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10204 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
10205 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
10206 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10207 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
10208 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
10209 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10210 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
10211 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
10212 | case 'f': break; | |
10213 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
10214 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
10215 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10216 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
10217 | case 'l': break; | |
10218 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10219 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10220 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
10221 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10222 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10223 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10224 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
10225 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10226 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10227 | case 'x': break; | |
10228 | case 'z': break; | |
10229 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
10230 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
10231 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
60b63b72 RS |
10232 | case 'e': USE_BITS (OP_MASK_VECBYTE, OP_SH_VECBYTE); break; |
10233 | case '%': USE_BITS (OP_MASK_VECALIGN, OP_SH_VECALIGN); break; | |
10234 | case '[': break; | |
10235 | case ']': break; | |
620edafd | 10236 | case '1': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8b082fb1 | 10237 | case '2': USE_BITS (OP_MASK_BP, OP_SH_BP); break; |
74cd071d CF |
10238 | case '3': USE_BITS (OP_MASK_SA3, OP_SH_SA3); break; |
10239 | case '4': USE_BITS (OP_MASK_SA4, OP_SH_SA4); break; | |
10240 | case '5': USE_BITS (OP_MASK_IMM8, OP_SH_IMM8); break; | |
10241 | case '6': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10242 | case '7': USE_BITS (OP_MASK_DSPACC, OP_SH_DSPACC); break; | |
10243 | case '8': USE_BITS (OP_MASK_WRDSP, OP_SH_WRDSP); break; | |
10244 | case '9': USE_BITS (OP_MASK_DSPACC_S, OP_SH_DSPACC_S);break; | |
10245 | case '0': USE_BITS (OP_MASK_DSPSFT, OP_SH_DSPSFT); break; | |
10246 | case '\'': USE_BITS (OP_MASK_RDDSP, OP_SH_RDDSP); break; | |
10247 | case ':': USE_BITS (OP_MASK_DSPSFT_7, OP_SH_DSPSFT_7);break; | |
10248 | case '@': USE_BITS (OP_MASK_IMM10, OP_SH_IMM10); break; | |
ef2e4d86 CF |
10249 | case '!': USE_BITS (OP_MASK_MT_U, OP_SH_MT_U); break; |
10250 | case '$': USE_BITS (OP_MASK_MT_H, OP_SH_MT_H); break; | |
10251 | case '*': USE_BITS (OP_MASK_MTACC_T, OP_SH_MTACC_T); break; | |
10252 | case '&': USE_BITS (OP_MASK_MTACC_D, OP_SH_MTACC_D); break; | |
10253 | case 'g': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
252b5132 RH |
10254 | default: |
10255 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
10256 | c, opc->name, opc->args); | |
10257 | return 0; | |
10258 | } | |
10259 | #undef USE_BITS | |
10260 | if (used_bits != 0xffffffff) | |
10261 | { | |
10262 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
10263 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
10264 | return 0; | |
10265 | } | |
10266 | return 1; | |
10267 | } | |
10268 | ||
df58fc94 RS |
10269 | /* For consistency checking, verify that the length implied matches the |
10270 | major opcode and that all bits are specified either by the match/mask | |
10271 | part of the instruction definition, or by the operand list. */ | |
10272 | ||
10273 | static int | |
10274 | validate_micromips_insn (const struct mips_opcode *opc) | |
10275 | { | |
10276 | unsigned long match = opc->match; | |
10277 | unsigned long mask = opc->mask; | |
10278 | const char *p = opc->args; | |
10279 | unsigned long insn_bits; | |
10280 | unsigned long used_bits; | |
10281 | unsigned long major; | |
10282 | unsigned int length; | |
10283 | char e; | |
10284 | char c; | |
10285 | ||
10286 | if ((mask & match) != match) | |
10287 | { | |
10288 | as_bad (_("Internal error: bad microMIPS opcode (mask error): %s %s"), | |
10289 | opc->name, opc->args); | |
10290 | return 0; | |
10291 | } | |
10292 | length = micromips_insn_length (opc); | |
10293 | if (length != 2 && length != 4) | |
10294 | { | |
10295 | as_bad (_("Internal error: bad microMIPS opcode (incorrect length: %u): " | |
10296 | "%s %s"), length, opc->name, opc->args); | |
10297 | return 0; | |
10298 | } | |
10299 | major = match >> (10 + 8 * (length - 2)); | |
10300 | if ((length == 2 && (major & 7) != 1 && (major & 6) != 2) | |
10301 | || (length == 4 && (major & 7) != 0 && (major & 4) != 4)) | |
10302 | { | |
10303 | as_bad (_("Internal error: bad microMIPS opcode " | |
10304 | "(opcode/length mismatch): %s %s"), opc->name, opc->args); | |
10305 | return 0; | |
10306 | } | |
10307 | ||
10308 | /* Shift piecewise to avoid an overflow where unsigned long is 32-bit. */ | |
10309 | insn_bits = 1 << 4 * length; | |
10310 | insn_bits <<= 4 * length; | |
10311 | insn_bits -= 1; | |
10312 | used_bits = mask; | |
10313 | #define USE_BITS(field) \ | |
10314 | (used_bits |= MICROMIPSOP_MASK_##field << MICROMIPSOP_SH_##field) | |
10315 | while (*p) | |
10316 | switch (c = *p++) | |
10317 | { | |
10318 | case ',': break; | |
10319 | case '(': break; | |
10320 | case ')': break; | |
10321 | case '+': | |
10322 | e = c; | |
10323 | switch (c = *p++) | |
10324 | { | |
10325 | case 'A': USE_BITS (EXTLSB); break; | |
10326 | case 'B': USE_BITS (INSMSB); break; | |
10327 | case 'C': USE_BITS (EXTMSBD); break; | |
10328 | case 'D': USE_BITS (RS); USE_BITS (SEL); break; | |
10329 | case 'E': USE_BITS (EXTLSB); break; | |
10330 | case 'F': USE_BITS (INSMSB); break; | |
10331 | case 'G': USE_BITS (EXTMSBD); break; | |
10332 | case 'H': USE_BITS (EXTMSBD); break; | |
10333 | default: | |
10334 | as_bad (_("Internal error: bad mips opcode " | |
10335 | "(unknown extension operand type `%c%c'): %s %s"), | |
10336 | e, c, opc->name, opc->args); | |
10337 | return 0; | |
10338 | } | |
10339 | break; | |
10340 | case 'm': | |
10341 | e = c; | |
10342 | switch (c = *p++) | |
10343 | { | |
10344 | case 'A': USE_BITS (IMMA); break; | |
10345 | case 'B': USE_BITS (IMMB); break; | |
10346 | case 'C': USE_BITS (IMMC); break; | |
10347 | case 'D': USE_BITS (IMMD); break; | |
10348 | case 'E': USE_BITS (IMME); break; | |
10349 | case 'F': USE_BITS (IMMF); break; | |
10350 | case 'G': USE_BITS (IMMG); break; | |
10351 | case 'H': USE_BITS (IMMH); break; | |
10352 | case 'I': USE_BITS (IMMI); break; | |
10353 | case 'J': USE_BITS (IMMJ); break; | |
10354 | case 'L': USE_BITS (IMML); break; | |
10355 | case 'M': USE_BITS (IMMM); break; | |
10356 | case 'N': USE_BITS (IMMN); break; | |
10357 | case 'O': USE_BITS (IMMO); break; | |
10358 | case 'P': USE_BITS (IMMP); break; | |
10359 | case 'Q': USE_BITS (IMMQ); break; | |
10360 | case 'U': USE_BITS (IMMU); break; | |
10361 | case 'W': USE_BITS (IMMW); break; | |
10362 | case 'X': USE_BITS (IMMX); break; | |
10363 | case 'Y': USE_BITS (IMMY); break; | |
10364 | case 'Z': break; | |
10365 | case 'a': break; | |
10366 | case 'b': USE_BITS (MB); break; | |
10367 | case 'c': USE_BITS (MC); break; | |
10368 | case 'd': USE_BITS (MD); break; | |
10369 | case 'e': USE_BITS (ME); break; | |
10370 | case 'f': USE_BITS (MF); break; | |
10371 | case 'g': USE_BITS (MG); break; | |
10372 | case 'h': USE_BITS (MH); break; | |
10373 | case 'i': USE_BITS (MI); break; | |
10374 | case 'j': USE_BITS (MJ); break; | |
10375 | case 'l': USE_BITS (ML); break; | |
10376 | case 'm': USE_BITS (MM); break; | |
10377 | case 'n': USE_BITS (MN); break; | |
10378 | case 'p': USE_BITS (MP); break; | |
10379 | case 'q': USE_BITS (MQ); break; | |
10380 | case 'r': break; | |
10381 | case 's': break; | |
10382 | case 't': break; | |
10383 | case 'x': break; | |
10384 | case 'y': break; | |
10385 | case 'z': break; | |
10386 | default: | |
10387 | as_bad (_("Internal error: bad mips opcode " | |
10388 | "(unknown extension operand type `%c%c'): %s %s"), | |
10389 | e, c, opc->name, opc->args); | |
10390 | return 0; | |
10391 | } | |
10392 | break; | |
10393 | case '.': USE_BITS (OFFSET10); break; | |
10394 | case '1': USE_BITS (STYPE); break; | |
10395 | case '<': USE_BITS (SHAMT); break; | |
10396 | case '>': USE_BITS (SHAMT); break; | |
10397 | case 'B': USE_BITS (CODE10); break; | |
10398 | case 'C': USE_BITS (COPZ); break; | |
10399 | case 'D': USE_BITS (FD); break; | |
10400 | case 'E': USE_BITS (RT); break; | |
10401 | case 'G': USE_BITS (RS); break; | |
10402 | case 'H': USE_BITS (SEL); break; | |
10403 | case 'K': USE_BITS (RS); break; | |
10404 | case 'M': USE_BITS (CCC); break; | |
10405 | case 'N': USE_BITS (BCC); break; | |
10406 | case 'R': USE_BITS (FR); break; | |
10407 | case 'S': USE_BITS (FS); break; | |
10408 | case 'T': USE_BITS (FT); break; | |
10409 | case 'V': USE_BITS (FS); break; | |
10410 | case 'a': USE_BITS (TARGET); break; | |
10411 | case 'b': USE_BITS (RS); break; | |
10412 | case 'c': USE_BITS (CODE); break; | |
10413 | case 'd': USE_BITS (RD); break; | |
10414 | case 'h': USE_BITS (PREFX); break; | |
10415 | case 'i': USE_BITS (IMMEDIATE); break; | |
10416 | case 'j': USE_BITS (DELTA); break; | |
10417 | case 'k': USE_BITS (CACHE); break; | |
10418 | case 'n': USE_BITS (RT); break; | |
10419 | case 'o': USE_BITS (DELTA); break; | |
10420 | case 'p': USE_BITS (DELTA); break; | |
10421 | case 'q': USE_BITS (CODE2); break; | |
10422 | case 'r': USE_BITS (RS); break; | |
10423 | case 's': USE_BITS (RS); break; | |
10424 | case 't': USE_BITS (RT); break; | |
10425 | case 'u': USE_BITS (IMMEDIATE); break; | |
10426 | case 'v': USE_BITS (RS); break; | |
10427 | case 'w': USE_BITS (RT); break; | |
10428 | case 'y': USE_BITS (RS3); break; | |
10429 | case 'z': break; | |
10430 | case '|': USE_BITS (TRAP); break; | |
10431 | case '~': USE_BITS (OFFSET12); break; | |
10432 | default: | |
10433 | as_bad (_("Internal error: bad microMIPS opcode " | |
10434 | "(unknown operand type `%c'): %s %s"), | |
10435 | c, opc->name, opc->args); | |
10436 | return 0; | |
10437 | } | |
10438 | #undef USE_BITS | |
10439 | if (used_bits != insn_bits) | |
10440 | { | |
10441 | if (~used_bits & insn_bits) | |
10442 | as_bad (_("Internal error: bad microMIPS opcode " | |
10443 | "(bits 0x%lx undefined): %s %s"), | |
10444 | ~used_bits & insn_bits, opc->name, opc->args); | |
10445 | if (used_bits & ~insn_bits) | |
10446 | as_bad (_("Internal error: bad microMIPS opcode " | |
10447 | "(bits 0x%lx defined): %s %s"), | |
10448 | used_bits & ~insn_bits, opc->name, opc->args); | |
10449 | return 0; | |
10450 | } | |
10451 | return 1; | |
10452 | } | |
10453 | ||
9bcd4f99 TS |
10454 | /* UDI immediates. */ |
10455 | struct mips_immed { | |
10456 | char type; | |
10457 | unsigned int shift; | |
10458 | unsigned long mask; | |
10459 | const char * desc; | |
10460 | }; | |
10461 | ||
10462 | static const struct mips_immed mips_immed[] = { | |
10463 | { '1', OP_SH_UDI1, OP_MASK_UDI1, 0}, | |
10464 | { '2', OP_SH_UDI2, OP_MASK_UDI2, 0}, | |
10465 | { '3', OP_SH_UDI3, OP_MASK_UDI3, 0}, | |
10466 | { '4', OP_SH_UDI4, OP_MASK_UDI4, 0}, | |
10467 | { 0,0,0,0 } | |
10468 | }; | |
10469 | ||
7455baf8 TS |
10470 | /* Check whether an odd floating-point register is allowed. */ |
10471 | static int | |
10472 | mips_oddfpreg_ok (const struct mips_opcode *insn, int argnum) | |
10473 | { | |
10474 | const char *s = insn->name; | |
10475 | ||
10476 | if (insn->pinfo == INSN_MACRO) | |
10477 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
10478 | return 1; | |
10479 | ||
10480 | if (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa)) | |
10481 | { | |
10482 | /* Allow odd registers for single-precision ops. */ | |
10483 | switch (insn->pinfo & (FP_S | FP_D)) | |
10484 | { | |
10485 | case FP_S: | |
10486 | case 0: | |
10487 | return 1; /* both single precision - ok */ | |
10488 | case FP_D: | |
10489 | return 0; /* both double precision - fail */ | |
10490 | default: | |
10491 | break; | |
10492 | } | |
10493 | ||
10494 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ | |
10495 | s = strchr (insn->name, '.'); | |
10496 | if (argnum == 2) | |
10497 | s = s != NULL ? strchr (s + 1, '.') : NULL; | |
10498 | return (s != NULL && (s[1] == 'w' || s[1] == 's')); | |
10499 | } | |
10500 | ||
10501 | /* Single-precision coprocessor loads and moves are OK too. */ | |
10502 | if ((insn->pinfo & FP_S) | |
10503 | && (insn->pinfo & (INSN_COPROC_MEMORY_DELAY | INSN_STORE_MEMORY | |
10504 | | INSN_LOAD_COPROC_DELAY | INSN_COPROC_MOVE_DELAY))) | |
10505 | return 1; | |
10506 | ||
10507 | return 0; | |
10508 | } | |
10509 | ||
df58fc94 RS |
10510 | /* Check if EXPR is a constant between MIN (inclusive) and MAX (exclusive) |
10511 | taking bits from BIT up. */ | |
10512 | static int | |
10513 | expr_const_in_range (expressionS *ep, offsetT min, offsetT max, int bit) | |
10514 | { | |
10515 | return (ep->X_op == O_constant | |
10516 | && (ep->X_add_number & ((1 << bit) - 1)) == 0 | |
10517 | && ep->X_add_number >= min << bit | |
10518 | && ep->X_add_number < max << bit); | |
10519 | } | |
10520 | ||
252b5132 RH |
10521 | /* This routine assembles an instruction into its binary format. As a |
10522 | side effect, it sets one of the global variables imm_reloc or | |
10523 | offset_reloc to the type of relocation to do if one of the operands | |
10524 | is an address expression. */ | |
10525 | ||
10526 | static void | |
17a2f251 | 10527 | mips_ip (char *str, struct mips_cl_insn *ip) |
252b5132 | 10528 | { |
df58fc94 RS |
10529 | bfd_boolean wrong_delay_slot_insns = FALSE; |
10530 | bfd_boolean need_delay_slot_ok = TRUE; | |
10531 | struct mips_opcode *firstinsn = NULL; | |
10532 | const struct mips_opcode *past; | |
10533 | struct hash_control *hash; | |
252b5132 RH |
10534 | char *s; |
10535 | const char *args; | |
43841e91 | 10536 | char c = 0; |
252b5132 RH |
10537 | struct mips_opcode *insn; |
10538 | char *argsStart; | |
10539 | unsigned int regno; | |
34224acf | 10540 | unsigned int lastregno; |
df58fc94 | 10541 | unsigned int destregno = 0; |
af7ee8bf | 10542 | unsigned int lastpos = 0; |
071742cf | 10543 | unsigned int limlo, limhi; |
252b5132 | 10544 | char *s_reset; |
74cd071d | 10545 | offsetT min_range, max_range; |
df58fc94 | 10546 | long opend; |
a40bc9dd | 10547 | char *name; |
707bfff6 TS |
10548 | int argnum; |
10549 | unsigned int rtype; | |
df58fc94 | 10550 | char *dot; |
a40bc9dd | 10551 | long end; |
252b5132 RH |
10552 | |
10553 | insn_error = NULL; | |
10554 | ||
df58fc94 RS |
10555 | if (mips_opts.micromips) |
10556 | { | |
10557 | hash = micromips_op_hash; | |
10558 | past = µmips_opcodes[bfd_micromips_num_opcodes]; | |
10559 | } | |
10560 | else | |
10561 | { | |
10562 | hash = op_hash; | |
10563 | past = &mips_opcodes[NUMOPCODES]; | |
10564 | } | |
10565 | forced_insn_length = 0; | |
252b5132 | 10566 | insn = NULL; |
252b5132 | 10567 | |
df58fc94 | 10568 | /* We first try to match an instruction up to a space or to the end. */ |
a40bc9dd RS |
10569 | for (end = 0; str[end] != '\0' && !ISSPACE (str[end]); end++) |
10570 | continue; | |
bdaaa2e1 | 10571 | |
a40bc9dd RS |
10572 | /* Make a copy of the instruction so that we can fiddle with it. */ |
10573 | name = alloca (end + 1); | |
10574 | memcpy (name, str, end); | |
10575 | name[end] = '\0'; | |
252b5132 | 10576 | |
df58fc94 RS |
10577 | for (;;) |
10578 | { | |
10579 | insn = (struct mips_opcode *) hash_find (hash, name); | |
10580 | ||
10581 | if (insn != NULL || !mips_opts.micromips) | |
10582 | break; | |
10583 | if (forced_insn_length) | |
10584 | break; | |
10585 | ||
10586 | /* See if there's an instruction size override suffix, | |
10587 | either `16' or `32', at the end of the mnemonic proper, | |
10588 | that defines the operation, i.e. before the first `.' | |
10589 | character if any. Strip it and retry. */ | |
10590 | dot = strchr (name, '.'); | |
10591 | opend = dot != NULL ? dot - name : end; | |
10592 | if (opend < 3) | |
10593 | break; | |
10594 | if (name[opend - 2] == '1' && name[opend - 1] == '6') | |
10595 | forced_insn_length = 2; | |
10596 | else if (name[opend - 2] == '3' && name[opend - 1] == '2') | |
10597 | forced_insn_length = 4; | |
10598 | else | |
10599 | break; | |
10600 | memcpy (name + opend - 2, name + opend, end - opend + 1); | |
10601 | } | |
252b5132 RH |
10602 | if (insn == NULL) |
10603 | { | |
a40bc9dd RS |
10604 | insn_error = _("Unrecognized opcode"); |
10605 | return; | |
252b5132 RH |
10606 | } |
10607 | ||
df58fc94 RS |
10608 | /* For microMIPS instructions placed in a fixed-length branch delay slot |
10609 | we make up to two passes over the relevant fragment of the opcode | |
10610 | table. First we try instructions that meet the delay slot's length | |
10611 | requirement. If none matched, then we retry with the remaining ones | |
10612 | and if one matches, then we use it and then issue an appropriate | |
10613 | warning later on. */ | |
a40bc9dd | 10614 | argsStart = s = str + end; |
252b5132 RH |
10615 | for (;;) |
10616 | { | |
df58fc94 RS |
10617 | bfd_boolean delay_slot_ok; |
10618 | bfd_boolean size_ok; | |
b34976b6 | 10619 | bfd_boolean ok; |
252b5132 | 10620 | |
a40bc9dd | 10621 | gas_assert (strcmp (insn->name, name) == 0); |
252b5132 | 10622 | |
f79e2745 | 10623 | ok = is_opcode_valid (insn); |
df58fc94 RS |
10624 | size_ok = is_size_valid (insn); |
10625 | delay_slot_ok = is_delay_slot_valid (insn); | |
10626 | if (!delay_slot_ok && !wrong_delay_slot_insns) | |
252b5132 | 10627 | { |
df58fc94 RS |
10628 | firstinsn = insn; |
10629 | wrong_delay_slot_insns = TRUE; | |
10630 | } | |
10631 | if (!ok || !size_ok || delay_slot_ok != need_delay_slot_ok) | |
10632 | { | |
10633 | static char buf[256]; | |
10634 | ||
10635 | if (insn + 1 < past && strcmp (insn->name, insn[1].name) == 0) | |
252b5132 RH |
10636 | { |
10637 | ++insn; | |
10638 | continue; | |
10639 | } | |
df58fc94 | 10640 | if (wrong_delay_slot_insns && need_delay_slot_ok) |
beae10d5 | 10641 | { |
df58fc94 RS |
10642 | gas_assert (firstinsn); |
10643 | need_delay_slot_ok = FALSE; | |
10644 | past = insn + 1; | |
10645 | insn = firstinsn; | |
10646 | continue; | |
252b5132 | 10647 | } |
df58fc94 RS |
10648 | |
10649 | if (insn_error) | |
10650 | return; | |
10651 | ||
10652 | if (!ok) | |
10653 | sprintf (buf, _("opcode not supported on this processor: %s (%s)"), | |
10654 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
10655 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
10656 | else | |
10657 | sprintf (buf, _("Unrecognized %u-bit version of microMIPS opcode"), | |
10658 | 8 * forced_insn_length); | |
10659 | insn_error = buf; | |
10660 | ||
10661 | return; | |
252b5132 RH |
10662 | } |
10663 | ||
1e915849 | 10664 | create_insn (ip, insn); |
268f6bed | 10665 | insn_error = NULL; |
707bfff6 | 10666 | argnum = 1; |
24864476 | 10667 | lastregno = 0xffffffff; |
252b5132 RH |
10668 | for (args = insn->args;; ++args) |
10669 | { | |
deec1734 CD |
10670 | int is_mdmx; |
10671 | ||
ad8d3bb3 | 10672 | s += strspn (s, " \t"); |
deec1734 | 10673 | is_mdmx = 0; |
252b5132 RH |
10674 | switch (*args) |
10675 | { | |
10676 | case '\0': /* end of args */ | |
10677 | if (*s == '\0') | |
10678 | return; | |
10679 | break; | |
10680 | ||
90ecf173 | 10681 | case '2': /* DSP 2-bit unsigned immediate in bit 11. */ |
df58fc94 | 10682 | gas_assert (!mips_opts.micromips); |
8b082fb1 TS |
10683 | my_getExpression (&imm_expr, s); |
10684 | check_absolute_expr (ip, &imm_expr); | |
10685 | if ((unsigned long) imm_expr.X_add_number != 1 | |
10686 | && (unsigned long) imm_expr.X_add_number != 3) | |
10687 | { | |
10688 | as_bad (_("BALIGN immediate not 1 or 3 (%lu)"), | |
10689 | (unsigned long) imm_expr.X_add_number); | |
10690 | } | |
df58fc94 | 10691 | INSERT_OPERAND (0, BP, *ip, imm_expr.X_add_number); |
8b082fb1 TS |
10692 | imm_expr.X_op = O_absent; |
10693 | s = expr_end; | |
10694 | continue; | |
10695 | ||
90ecf173 | 10696 | case '3': /* DSP 3-bit unsigned immediate in bit 21. */ |
df58fc94 | 10697 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10698 | my_getExpression (&imm_expr, s); |
10699 | check_absolute_expr (ip, &imm_expr); | |
10700 | if (imm_expr.X_add_number & ~OP_MASK_SA3) | |
10701 | { | |
a9e24354 TS |
10702 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10703 | OP_MASK_SA3, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10704 | } |
df58fc94 | 10705 | INSERT_OPERAND (0, SA3, *ip, imm_expr.X_add_number); |
74cd071d CF |
10706 | imm_expr.X_op = O_absent; |
10707 | s = expr_end; | |
10708 | continue; | |
10709 | ||
90ecf173 | 10710 | case '4': /* DSP 4-bit unsigned immediate in bit 21. */ |
df58fc94 | 10711 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10712 | my_getExpression (&imm_expr, s); |
10713 | check_absolute_expr (ip, &imm_expr); | |
10714 | if (imm_expr.X_add_number & ~OP_MASK_SA4) | |
10715 | { | |
a9e24354 TS |
10716 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10717 | OP_MASK_SA4, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10718 | } |
df58fc94 | 10719 | INSERT_OPERAND (0, SA4, *ip, imm_expr.X_add_number); |
74cd071d CF |
10720 | imm_expr.X_op = O_absent; |
10721 | s = expr_end; | |
10722 | continue; | |
10723 | ||
90ecf173 | 10724 | case '5': /* DSP 8-bit unsigned immediate in bit 16. */ |
df58fc94 | 10725 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10726 | my_getExpression (&imm_expr, s); |
10727 | check_absolute_expr (ip, &imm_expr); | |
10728 | if (imm_expr.X_add_number & ~OP_MASK_IMM8) | |
10729 | { | |
a9e24354 TS |
10730 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10731 | OP_MASK_IMM8, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10732 | } |
df58fc94 | 10733 | INSERT_OPERAND (0, IMM8, *ip, imm_expr.X_add_number); |
74cd071d CF |
10734 | imm_expr.X_op = O_absent; |
10735 | s = expr_end; | |
10736 | continue; | |
10737 | ||
90ecf173 | 10738 | case '6': /* DSP 5-bit unsigned immediate in bit 21. */ |
df58fc94 | 10739 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10740 | my_getExpression (&imm_expr, s); |
10741 | check_absolute_expr (ip, &imm_expr); | |
10742 | if (imm_expr.X_add_number & ~OP_MASK_RS) | |
10743 | { | |
a9e24354 TS |
10744 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10745 | OP_MASK_RS, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10746 | } |
df58fc94 | 10747 | INSERT_OPERAND (0, RS, *ip, imm_expr.X_add_number); |
74cd071d CF |
10748 | imm_expr.X_op = O_absent; |
10749 | s = expr_end; | |
10750 | continue; | |
10751 | ||
90ecf173 | 10752 | case '7': /* Four DSP accumulators in bits 11,12. */ |
df58fc94 | 10753 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10754 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
10755 | s[3] >= '0' && s[3] <= '3') | |
10756 | { | |
10757 | regno = s[3] - '0'; | |
10758 | s += 4; | |
df58fc94 | 10759 | INSERT_OPERAND (0, DSPACC, *ip, regno); |
74cd071d CF |
10760 | continue; |
10761 | } | |
10762 | else | |
10763 | as_bad (_("Invalid dsp acc register")); | |
10764 | break; | |
10765 | ||
90ecf173 | 10766 | case '8': /* DSP 6-bit unsigned immediate in bit 11. */ |
df58fc94 | 10767 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10768 | my_getExpression (&imm_expr, s); |
10769 | check_absolute_expr (ip, &imm_expr); | |
10770 | if (imm_expr.X_add_number & ~OP_MASK_WRDSP) | |
10771 | { | |
a9e24354 TS |
10772 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10773 | OP_MASK_WRDSP, | |
10774 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10775 | } |
df58fc94 | 10776 | INSERT_OPERAND (0, WRDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
10777 | imm_expr.X_op = O_absent; |
10778 | s = expr_end; | |
10779 | continue; | |
10780 | ||
90ecf173 | 10781 | case '9': /* Four DSP accumulators in bits 21,22. */ |
df58fc94 | 10782 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10783 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
10784 | s[3] >= '0' && s[3] <= '3') | |
10785 | { | |
10786 | regno = s[3] - '0'; | |
10787 | s += 4; | |
df58fc94 | 10788 | INSERT_OPERAND (0, DSPACC_S, *ip, regno); |
74cd071d CF |
10789 | continue; |
10790 | } | |
10791 | else | |
10792 | as_bad (_("Invalid dsp acc register")); | |
10793 | break; | |
10794 | ||
90ecf173 | 10795 | case '0': /* DSP 6-bit signed immediate in bit 20. */ |
df58fc94 | 10796 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10797 | my_getExpression (&imm_expr, s); |
10798 | check_absolute_expr (ip, &imm_expr); | |
10799 | min_range = -((OP_MASK_DSPSFT + 1) >> 1); | |
10800 | max_range = ((OP_MASK_DSPSFT + 1) >> 1) - 1; | |
10801 | if (imm_expr.X_add_number < min_range || | |
10802 | imm_expr.X_add_number > max_range) | |
10803 | { | |
a9e24354 TS |
10804 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
10805 | (long) min_range, (long) max_range, | |
10806 | (long) imm_expr.X_add_number); | |
74cd071d | 10807 | } |
df58fc94 | 10808 | INSERT_OPERAND (0, DSPSFT, *ip, imm_expr.X_add_number); |
74cd071d CF |
10809 | imm_expr.X_op = O_absent; |
10810 | s = expr_end; | |
10811 | continue; | |
10812 | ||
90ecf173 | 10813 | case '\'': /* DSP 6-bit unsigned immediate in bit 16. */ |
df58fc94 | 10814 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10815 | my_getExpression (&imm_expr, s); |
10816 | check_absolute_expr (ip, &imm_expr); | |
10817 | if (imm_expr.X_add_number & ~OP_MASK_RDDSP) | |
10818 | { | |
a9e24354 TS |
10819 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10820 | OP_MASK_RDDSP, | |
10821 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10822 | } |
df58fc94 | 10823 | INSERT_OPERAND (0, RDDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
10824 | imm_expr.X_op = O_absent; |
10825 | s = expr_end; | |
10826 | continue; | |
10827 | ||
90ecf173 | 10828 | case ':': /* DSP 7-bit signed immediate in bit 19. */ |
df58fc94 | 10829 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10830 | my_getExpression (&imm_expr, s); |
10831 | check_absolute_expr (ip, &imm_expr); | |
10832 | min_range = -((OP_MASK_DSPSFT_7 + 1) >> 1); | |
10833 | max_range = ((OP_MASK_DSPSFT_7 + 1) >> 1) - 1; | |
10834 | if (imm_expr.X_add_number < min_range || | |
10835 | imm_expr.X_add_number > max_range) | |
10836 | { | |
a9e24354 TS |
10837 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
10838 | (long) min_range, (long) max_range, | |
10839 | (long) imm_expr.X_add_number); | |
74cd071d | 10840 | } |
df58fc94 | 10841 | INSERT_OPERAND (0, DSPSFT_7, *ip, imm_expr.X_add_number); |
74cd071d CF |
10842 | imm_expr.X_op = O_absent; |
10843 | s = expr_end; | |
10844 | continue; | |
10845 | ||
90ecf173 | 10846 | case '@': /* DSP 10-bit signed immediate in bit 16. */ |
df58fc94 | 10847 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10848 | my_getExpression (&imm_expr, s); |
10849 | check_absolute_expr (ip, &imm_expr); | |
10850 | min_range = -((OP_MASK_IMM10 + 1) >> 1); | |
10851 | max_range = ((OP_MASK_IMM10 + 1) >> 1) - 1; | |
10852 | if (imm_expr.X_add_number < min_range || | |
10853 | imm_expr.X_add_number > max_range) | |
10854 | { | |
a9e24354 TS |
10855 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
10856 | (long) min_range, (long) max_range, | |
10857 | (long) imm_expr.X_add_number); | |
74cd071d | 10858 | } |
df58fc94 | 10859 | INSERT_OPERAND (0, IMM10, *ip, imm_expr.X_add_number); |
74cd071d CF |
10860 | imm_expr.X_op = O_absent; |
10861 | s = expr_end; | |
10862 | continue; | |
10863 | ||
a9e24354 | 10864 | case '!': /* MT usermode flag bit. */ |
df58fc94 | 10865 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10866 | my_getExpression (&imm_expr, s); |
10867 | check_absolute_expr (ip, &imm_expr); | |
10868 | if (imm_expr.X_add_number & ~OP_MASK_MT_U) | |
a9e24354 TS |
10869 | as_bad (_("MT usermode bit not 0 or 1 (%lu)"), |
10870 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 10871 | INSERT_OPERAND (0, MT_U, *ip, imm_expr.X_add_number); |
ef2e4d86 CF |
10872 | imm_expr.X_op = O_absent; |
10873 | s = expr_end; | |
10874 | continue; | |
10875 | ||
a9e24354 | 10876 | case '$': /* MT load high flag bit. */ |
df58fc94 | 10877 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10878 | my_getExpression (&imm_expr, s); |
10879 | check_absolute_expr (ip, &imm_expr); | |
10880 | if (imm_expr.X_add_number & ~OP_MASK_MT_H) | |
a9e24354 TS |
10881 | as_bad (_("MT load high bit not 0 or 1 (%lu)"), |
10882 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 10883 | INSERT_OPERAND (0, MT_H, *ip, imm_expr.X_add_number); |
ef2e4d86 CF |
10884 | imm_expr.X_op = O_absent; |
10885 | s = expr_end; | |
10886 | continue; | |
10887 | ||
90ecf173 | 10888 | case '*': /* Four DSP accumulators in bits 18,19. */ |
df58fc94 | 10889 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10890 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
10891 | s[3] >= '0' && s[3] <= '3') | |
10892 | { | |
10893 | regno = s[3] - '0'; | |
10894 | s += 4; | |
df58fc94 | 10895 | INSERT_OPERAND (0, MTACC_T, *ip, regno); |
ef2e4d86 CF |
10896 | continue; |
10897 | } | |
10898 | else | |
10899 | as_bad (_("Invalid dsp/smartmips acc register")); | |
10900 | break; | |
10901 | ||
90ecf173 | 10902 | case '&': /* Four DSP accumulators in bits 13,14. */ |
df58fc94 | 10903 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10904 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
10905 | s[3] >= '0' && s[3] <= '3') | |
10906 | { | |
10907 | regno = s[3] - '0'; | |
10908 | s += 4; | |
df58fc94 | 10909 | INSERT_OPERAND (0, MTACC_D, *ip, regno); |
ef2e4d86 CF |
10910 | continue; |
10911 | } | |
10912 | else | |
10913 | as_bad (_("Invalid dsp/smartmips acc register")); | |
10914 | break; | |
10915 | ||
252b5132 | 10916 | case ',': |
a339155f | 10917 | ++argnum; |
252b5132 RH |
10918 | if (*s++ == *args) |
10919 | continue; | |
10920 | s--; | |
10921 | switch (*++args) | |
10922 | { | |
10923 | case 'r': | |
10924 | case 'v': | |
df58fc94 | 10925 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, lastregno); |
252b5132 RH |
10926 | continue; |
10927 | ||
10928 | case 'w': | |
df58fc94 | 10929 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, lastregno); |
38487616 TS |
10930 | continue; |
10931 | ||
252b5132 | 10932 | case 'W': |
df58fc94 RS |
10933 | gas_assert (!mips_opts.micromips); |
10934 | INSERT_OPERAND (0, FT, *ip, lastregno); | |
252b5132 RH |
10935 | continue; |
10936 | ||
10937 | case 'V': | |
df58fc94 | 10938 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, lastregno); |
252b5132 RH |
10939 | continue; |
10940 | } | |
10941 | break; | |
10942 | ||
10943 | case '(': | |
10944 | /* Handle optional base register. | |
10945 | Either the base register is omitted or | |
bdaaa2e1 | 10946 | we must have a left paren. */ |
252b5132 RH |
10947 | /* This is dependent on the next operand specifier |
10948 | is a base register specification. */ | |
df58fc94 RS |
10949 | gas_assert (args[1] == 'b' |
10950 | || (mips_opts.micromips | |
10951 | && args[1] == 'm' | |
10952 | && (args[2] == 'l' || args[2] == 'n' | |
10953 | || args[2] == 's' || args[2] == 'a'))); | |
10954 | if (*s == '\0' && args[1] == 'b') | |
252b5132 | 10955 | return; |
df58fc94 | 10956 | /* Fall through. */ |
252b5132 | 10957 | |
90ecf173 | 10958 | case ')': /* These must match exactly. */ |
df58fc94 RS |
10959 | if (*s++ == *args) |
10960 | continue; | |
10961 | break; | |
10962 | ||
10963 | case '[': /* These must match exactly. */ | |
60b63b72 | 10964 | case ']': |
df58fc94 | 10965 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
10966 | if (*s++ == *args) |
10967 | continue; | |
10968 | break; | |
10969 | ||
af7ee8bf CD |
10970 | case '+': /* Opcode extension character. */ |
10971 | switch (*++args) | |
10972 | { | |
9bcd4f99 TS |
10973 | case '1': /* UDI immediates. */ |
10974 | case '2': | |
10975 | case '3': | |
10976 | case '4': | |
df58fc94 | 10977 | gas_assert (!mips_opts.micromips); |
9bcd4f99 TS |
10978 | { |
10979 | const struct mips_immed *imm = mips_immed; | |
10980 | ||
10981 | while (imm->type && imm->type != *args) | |
10982 | ++imm; | |
10983 | if (! imm->type) | |
10984 | internalError (); | |
10985 | my_getExpression (&imm_expr, s); | |
10986 | check_absolute_expr (ip, &imm_expr); | |
10987 | if ((unsigned long) imm_expr.X_add_number & ~imm->mask) | |
10988 | { | |
10989 | as_warn (_("Illegal %s number (%lu, 0x%lx)"), | |
10990 | imm->desc ? imm->desc : ip->insn_mo->name, | |
10991 | (unsigned long) imm_expr.X_add_number, | |
10992 | (unsigned long) imm_expr.X_add_number); | |
90ecf173 | 10993 | imm_expr.X_add_number &= imm->mask; |
9bcd4f99 TS |
10994 | } |
10995 | ip->insn_opcode |= ((unsigned long) imm_expr.X_add_number | |
10996 | << imm->shift); | |
10997 | imm_expr.X_op = O_absent; | |
10998 | s = expr_end; | |
10999 | } | |
11000 | continue; | |
90ecf173 | 11001 | |
071742cf CD |
11002 | case 'A': /* ins/ext position, becomes LSB. */ |
11003 | limlo = 0; | |
11004 | limhi = 31; | |
5f74bc13 CD |
11005 | goto do_lsb; |
11006 | case 'E': | |
11007 | limlo = 32; | |
11008 | limhi = 63; | |
11009 | goto do_lsb; | |
90ecf173 | 11010 | do_lsb: |
071742cf CD |
11011 | my_getExpression (&imm_expr, s); |
11012 | check_absolute_expr (ip, &imm_expr); | |
11013 | if ((unsigned long) imm_expr.X_add_number < limlo | |
11014 | || (unsigned long) imm_expr.X_add_number > limhi) | |
11015 | { | |
11016 | as_bad (_("Improper position (%lu)"), | |
11017 | (unsigned long) imm_expr.X_add_number); | |
11018 | imm_expr.X_add_number = limlo; | |
11019 | } | |
11020 | lastpos = imm_expr.X_add_number; | |
df58fc94 RS |
11021 | INSERT_OPERAND (mips_opts.micromips, |
11022 | EXTLSB, *ip, imm_expr.X_add_number); | |
071742cf CD |
11023 | imm_expr.X_op = O_absent; |
11024 | s = expr_end; | |
11025 | continue; | |
11026 | ||
11027 | case 'B': /* ins size, becomes MSB. */ | |
11028 | limlo = 1; | |
11029 | limhi = 32; | |
5f74bc13 CD |
11030 | goto do_msb; |
11031 | case 'F': | |
11032 | limlo = 33; | |
11033 | limhi = 64; | |
11034 | goto do_msb; | |
90ecf173 | 11035 | do_msb: |
071742cf CD |
11036 | my_getExpression (&imm_expr, s); |
11037 | check_absolute_expr (ip, &imm_expr); | |
11038 | /* Check for negative input so that small negative numbers | |
11039 | will not succeed incorrectly. The checks against | |
11040 | (pos+size) transitively check "size" itself, | |
11041 | assuming that "pos" is reasonable. */ | |
11042 | if ((long) imm_expr.X_add_number < 0 | |
11043 | || ((unsigned long) imm_expr.X_add_number | |
11044 | + lastpos) < limlo | |
11045 | || ((unsigned long) imm_expr.X_add_number | |
11046 | + lastpos) > limhi) | |
11047 | { | |
11048 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
11049 | (unsigned long) imm_expr.X_add_number, | |
11050 | (unsigned long) lastpos); | |
11051 | imm_expr.X_add_number = limlo - lastpos; | |
11052 | } | |
df58fc94 RS |
11053 | INSERT_OPERAND (mips_opts.micromips, INSMSB, *ip, |
11054 | lastpos + imm_expr.X_add_number - 1); | |
071742cf CD |
11055 | imm_expr.X_op = O_absent; |
11056 | s = expr_end; | |
11057 | continue; | |
11058 | ||
11059 | case 'C': /* ext size, becomes MSBD. */ | |
11060 | limlo = 1; | |
11061 | limhi = 32; | |
5f74bc13 CD |
11062 | goto do_msbd; |
11063 | case 'G': | |
11064 | limlo = 33; | |
11065 | limhi = 64; | |
11066 | goto do_msbd; | |
11067 | case 'H': | |
11068 | limlo = 33; | |
11069 | limhi = 64; | |
11070 | goto do_msbd; | |
90ecf173 | 11071 | do_msbd: |
071742cf CD |
11072 | my_getExpression (&imm_expr, s); |
11073 | check_absolute_expr (ip, &imm_expr); | |
11074 | /* Check for negative input so that small negative numbers | |
11075 | will not succeed incorrectly. The checks against | |
11076 | (pos+size) transitively check "size" itself, | |
11077 | assuming that "pos" is reasonable. */ | |
11078 | if ((long) imm_expr.X_add_number < 0 | |
11079 | || ((unsigned long) imm_expr.X_add_number | |
11080 | + lastpos) < limlo | |
11081 | || ((unsigned long) imm_expr.X_add_number | |
11082 | + lastpos) > limhi) | |
11083 | { | |
11084 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
11085 | (unsigned long) imm_expr.X_add_number, | |
11086 | (unsigned long) lastpos); | |
11087 | imm_expr.X_add_number = limlo - lastpos; | |
11088 | } | |
df58fc94 RS |
11089 | INSERT_OPERAND (mips_opts.micromips, |
11090 | EXTMSBD, *ip, imm_expr.X_add_number - 1); | |
071742cf CD |
11091 | imm_expr.X_op = O_absent; |
11092 | s = expr_end; | |
11093 | continue; | |
af7ee8bf | 11094 | |
bbcc0807 CD |
11095 | case 'D': |
11096 | /* +D is for disassembly only; never match. */ | |
11097 | break; | |
11098 | ||
5f74bc13 CD |
11099 | case 'I': |
11100 | /* "+I" is like "I", except that imm2_expr is used. */ | |
11101 | my_getExpression (&imm2_expr, s); | |
11102 | if (imm2_expr.X_op != O_big | |
11103 | && imm2_expr.X_op != O_constant) | |
11104 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
11105 | if (HAVE_32BIT_GPRS) |
11106 | normalize_constant_expr (&imm2_expr); | |
5f74bc13 CD |
11107 | s = expr_end; |
11108 | continue; | |
11109 | ||
707bfff6 | 11110 | case 'T': /* Coprocessor register. */ |
df58fc94 | 11111 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11112 | /* +T is for disassembly only; never match. */ |
11113 | break; | |
11114 | ||
707bfff6 | 11115 | case 't': /* Coprocessor register number. */ |
df58fc94 | 11116 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11117 | if (s[0] == '$' && ISDIGIT (s[1])) |
11118 | { | |
11119 | ++s; | |
11120 | regno = 0; | |
11121 | do | |
11122 | { | |
11123 | regno *= 10; | |
11124 | regno += *s - '0'; | |
11125 | ++s; | |
11126 | } | |
11127 | while (ISDIGIT (*s)); | |
11128 | if (regno > 31) | |
11129 | as_bad (_("Invalid register number (%d)"), regno); | |
11130 | else | |
11131 | { | |
df58fc94 | 11132 | INSERT_OPERAND (0, RT, *ip, regno); |
ef2e4d86 CF |
11133 | continue; |
11134 | } | |
11135 | } | |
11136 | else | |
11137 | as_bad (_("Invalid coprocessor 0 register number")); | |
11138 | break; | |
11139 | ||
bb35fb24 NC |
11140 | case 'x': |
11141 | /* bbit[01] and bbit[01]32 bit index. Give error if index | |
11142 | is not in the valid range. */ | |
df58fc94 | 11143 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11144 | my_getExpression (&imm_expr, s); |
11145 | check_absolute_expr (ip, &imm_expr); | |
11146 | if ((unsigned) imm_expr.X_add_number > 31) | |
11147 | { | |
11148 | as_bad (_("Improper bit index (%lu)"), | |
11149 | (unsigned long) imm_expr.X_add_number); | |
11150 | imm_expr.X_add_number = 0; | |
11151 | } | |
df58fc94 | 11152 | INSERT_OPERAND (0, BBITIND, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11153 | imm_expr.X_op = O_absent; |
11154 | s = expr_end; | |
11155 | continue; | |
11156 | ||
11157 | case 'X': | |
11158 | /* bbit[01] bit index when bbit is used but we generate | |
11159 | bbit[01]32 because the index is over 32. Move to the | |
11160 | next candidate if index is not in the valid range. */ | |
df58fc94 | 11161 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11162 | my_getExpression (&imm_expr, s); |
11163 | check_absolute_expr (ip, &imm_expr); | |
11164 | if ((unsigned) imm_expr.X_add_number < 32 | |
11165 | || (unsigned) imm_expr.X_add_number > 63) | |
11166 | break; | |
df58fc94 | 11167 | INSERT_OPERAND (0, BBITIND, *ip, imm_expr.X_add_number - 32); |
bb35fb24 NC |
11168 | imm_expr.X_op = O_absent; |
11169 | s = expr_end; | |
11170 | continue; | |
11171 | ||
11172 | case 'p': | |
11173 | /* cins, cins32, exts and exts32 position field. Give error | |
11174 | if it's not in the valid range. */ | |
df58fc94 | 11175 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11176 | my_getExpression (&imm_expr, s); |
11177 | check_absolute_expr (ip, &imm_expr); | |
11178 | if ((unsigned) imm_expr.X_add_number > 31) | |
11179 | { | |
11180 | as_bad (_("Improper position (%lu)"), | |
11181 | (unsigned long) imm_expr.X_add_number); | |
11182 | imm_expr.X_add_number = 0; | |
11183 | } | |
11184 | /* Make the pos explicit to simplify +S. */ | |
11185 | lastpos = imm_expr.X_add_number + 32; | |
df58fc94 | 11186 | INSERT_OPERAND (0, CINSPOS, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11187 | imm_expr.X_op = O_absent; |
11188 | s = expr_end; | |
11189 | continue; | |
11190 | ||
11191 | case 'P': | |
11192 | /* cins, cins32, exts and exts32 position field. Move to | |
11193 | the next candidate if it's not in the valid range. */ | |
df58fc94 | 11194 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11195 | my_getExpression (&imm_expr, s); |
11196 | check_absolute_expr (ip, &imm_expr); | |
11197 | if ((unsigned) imm_expr.X_add_number < 32 | |
11198 | || (unsigned) imm_expr.X_add_number > 63) | |
11199 | break; | |
11200 | lastpos = imm_expr.X_add_number; | |
df58fc94 | 11201 | INSERT_OPERAND (0, CINSPOS, *ip, imm_expr.X_add_number - 32); |
bb35fb24 NC |
11202 | imm_expr.X_op = O_absent; |
11203 | s = expr_end; | |
11204 | continue; | |
11205 | ||
11206 | case 's': | |
11207 | /* cins and exts length-minus-one field. */ | |
df58fc94 | 11208 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11209 | my_getExpression (&imm_expr, s); |
11210 | check_absolute_expr (ip, &imm_expr); | |
11211 | if ((unsigned long) imm_expr.X_add_number > 31) | |
11212 | { | |
11213 | as_bad (_("Improper size (%lu)"), | |
11214 | (unsigned long) imm_expr.X_add_number); | |
11215 | imm_expr.X_add_number = 0; | |
11216 | } | |
df58fc94 | 11217 | INSERT_OPERAND (0, CINSLM1, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11218 | imm_expr.X_op = O_absent; |
11219 | s = expr_end; | |
11220 | continue; | |
11221 | ||
11222 | case 'S': | |
11223 | /* cins32/exts32 and cins/exts aliasing cint32/exts32 | |
11224 | length-minus-one field. */ | |
df58fc94 | 11225 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11226 | my_getExpression (&imm_expr, s); |
11227 | check_absolute_expr (ip, &imm_expr); | |
11228 | if ((long) imm_expr.X_add_number < 0 | |
11229 | || (unsigned long) imm_expr.X_add_number + lastpos > 63) | |
11230 | { | |
11231 | as_bad (_("Improper size (%lu)"), | |
11232 | (unsigned long) imm_expr.X_add_number); | |
11233 | imm_expr.X_add_number = 0; | |
11234 | } | |
df58fc94 | 11235 | INSERT_OPERAND (0, CINSLM1, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11236 | imm_expr.X_op = O_absent; |
11237 | s = expr_end; | |
11238 | continue; | |
11239 | ||
dd3cbb7e NC |
11240 | case 'Q': |
11241 | /* seqi/snei immediate field. */ | |
df58fc94 | 11242 | gas_assert (!mips_opts.micromips); |
dd3cbb7e NC |
11243 | my_getExpression (&imm_expr, s); |
11244 | check_absolute_expr (ip, &imm_expr); | |
11245 | if ((long) imm_expr.X_add_number < -512 | |
11246 | || (long) imm_expr.X_add_number >= 512) | |
11247 | { | |
11248 | as_bad (_("Improper immediate (%ld)"), | |
11249 | (long) imm_expr.X_add_number); | |
11250 | imm_expr.X_add_number = 0; | |
11251 | } | |
df58fc94 | 11252 | INSERT_OPERAND (0, SEQI, *ip, imm_expr.X_add_number); |
dd3cbb7e NC |
11253 | imm_expr.X_op = O_absent; |
11254 | s = expr_end; | |
11255 | continue; | |
11256 | ||
98675402 | 11257 | case 'a': /* 8-bit signed offset in bit 6 */ |
df58fc94 | 11258 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11259 | my_getExpression (&imm_expr, s); |
11260 | check_absolute_expr (ip, &imm_expr); | |
11261 | min_range = -((OP_MASK_OFFSET_A + 1) >> 1); | |
11262 | max_range = ((OP_MASK_OFFSET_A + 1) >> 1) - 1; | |
11263 | if (imm_expr.X_add_number < min_range | |
11264 | || imm_expr.X_add_number > max_range) | |
11265 | { | |
c95354ed | 11266 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11267 | (long) min_range, (long) max_range, |
11268 | (long) imm_expr.X_add_number); | |
11269 | } | |
df58fc94 | 11270 | INSERT_OPERAND (0, OFFSET_A, *ip, imm_expr.X_add_number); |
98675402 RS |
11271 | imm_expr.X_op = O_absent; |
11272 | s = expr_end; | |
11273 | continue; | |
11274 | ||
11275 | case 'b': /* 8-bit signed offset in bit 3 */ | |
df58fc94 | 11276 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11277 | my_getExpression (&imm_expr, s); |
11278 | check_absolute_expr (ip, &imm_expr); | |
11279 | min_range = -((OP_MASK_OFFSET_B + 1) >> 1); | |
11280 | max_range = ((OP_MASK_OFFSET_B + 1) >> 1) - 1; | |
11281 | if (imm_expr.X_add_number < min_range | |
11282 | || imm_expr.X_add_number > max_range) | |
11283 | { | |
c95354ed | 11284 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11285 | (long) min_range, (long) max_range, |
11286 | (long) imm_expr.X_add_number); | |
11287 | } | |
df58fc94 | 11288 | INSERT_OPERAND (0, OFFSET_B, *ip, imm_expr.X_add_number); |
98675402 RS |
11289 | imm_expr.X_op = O_absent; |
11290 | s = expr_end; | |
11291 | continue; | |
11292 | ||
11293 | case 'c': /* 9-bit signed offset in bit 6 */ | |
df58fc94 | 11294 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11295 | my_getExpression (&imm_expr, s); |
11296 | check_absolute_expr (ip, &imm_expr); | |
11297 | min_range = -((OP_MASK_OFFSET_C + 1) >> 1); | |
11298 | max_range = ((OP_MASK_OFFSET_C + 1) >> 1) - 1; | |
c95354ed MX |
11299 | /* We check the offset range before adjusted. */ |
11300 | min_range <<= 4; | |
11301 | max_range <<= 4; | |
98675402 RS |
11302 | if (imm_expr.X_add_number < min_range |
11303 | || imm_expr.X_add_number > max_range) | |
11304 | { | |
c95354ed | 11305 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11306 | (long) min_range, (long) max_range, |
11307 | (long) imm_expr.X_add_number); | |
11308 | } | |
c95354ed MX |
11309 | if (imm_expr.X_add_number & 0xf) |
11310 | { | |
11311 | as_bad (_("Offset not 16 bytes alignment (%ld)"), | |
11312 | (long) imm_expr.X_add_number); | |
11313 | } | |
11314 | /* Right shift 4 bits to adjust the offset operand. */ | |
df58fc94 RS |
11315 | INSERT_OPERAND (0, OFFSET_C, *ip, |
11316 | imm_expr.X_add_number >> 4); | |
98675402 RS |
11317 | imm_expr.X_op = O_absent; |
11318 | s = expr_end; | |
11319 | continue; | |
11320 | ||
11321 | case 'z': | |
df58fc94 | 11322 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11323 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) |
11324 | break; | |
11325 | if (regno == AT && mips_opts.at) | |
11326 | { | |
11327 | if (mips_opts.at == ATREG) | |
11328 | as_warn (_("used $at without \".set noat\"")); | |
11329 | else | |
11330 | as_warn (_("used $%u with \".set at=$%u\""), | |
11331 | regno, mips_opts.at); | |
11332 | } | |
df58fc94 | 11333 | INSERT_OPERAND (0, RZ, *ip, regno); |
98675402 RS |
11334 | continue; |
11335 | ||
11336 | case 'Z': | |
df58fc94 | 11337 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11338 | if (!reg_lookup (&s, RTYPE_FPU, ®no)) |
11339 | break; | |
df58fc94 | 11340 | INSERT_OPERAND (0, FZ, *ip, regno); |
98675402 RS |
11341 | continue; |
11342 | ||
af7ee8bf | 11343 | default: |
df58fc94 | 11344 | as_bad (_("Internal error: bad %s opcode " |
90ecf173 | 11345 | "(unknown extension operand type `+%c'): %s %s"), |
df58fc94 | 11346 | mips_opts.micromips ? "microMIPS" : "MIPS", |
90ecf173 | 11347 | *args, insn->name, insn->args); |
af7ee8bf CD |
11348 | /* Further processing is fruitless. */ |
11349 | return; | |
11350 | } | |
11351 | break; | |
11352 | ||
df58fc94 RS |
11353 | case '.': /* 10-bit offset. */ |
11354 | case '~': /* 12-bit offset. */ | |
11355 | gas_assert (mips_opts.micromips); | |
11356 | { | |
11357 | int shift = *args == '.' ? 9 : 11; | |
11358 | size_t i; | |
11359 | ||
11360 | /* Check whether there is only a single bracketed expression | |
11361 | left. If so, it must be the base register and the | |
11362 | constant must be zero. */ | |
11363 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
11364 | continue; | |
11365 | ||
11366 | /* If this value won't fit into the offset, then go find | |
11367 | a macro that will generate a 16- or 32-bit offset code | |
11368 | pattern. */ | |
11369 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); | |
11370 | if ((i == 0 && (imm_expr.X_op != O_constant | |
11371 | || imm_expr.X_add_number >= 1 << shift | |
11372 | || imm_expr.X_add_number < -1 << shift)) | |
11373 | || i > 0) | |
11374 | { | |
11375 | imm_expr.X_op = O_absent; | |
11376 | break; | |
11377 | } | |
11378 | if (shift == 9) | |
11379 | INSERT_OPERAND (1, OFFSET10, *ip, imm_expr.X_add_number); | |
11380 | else | |
11381 | INSERT_OPERAND (1, OFFSET12, *ip, imm_expr.X_add_number); | |
11382 | imm_expr.X_op = O_absent; | |
11383 | s = expr_end; | |
11384 | } | |
11385 | continue; | |
11386 | ||
252b5132 RH |
11387 | case '<': /* must be at least one digit */ |
11388 | /* | |
11389 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
11390 | * than 31 or less than 0, then the shift amount should be |
11391 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
11392 | * We issue a warning and mask out all but the low 5 bits. |
11393 | */ | |
11394 | my_getExpression (&imm_expr, s); | |
11395 | check_absolute_expr (ip, &imm_expr); | |
11396 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
11397 | as_warn (_("Improper shift amount (%lu)"), |
11398 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 RS |
11399 | INSERT_OPERAND (mips_opts.micromips, |
11400 | SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
11401 | imm_expr.X_op = O_absent; |
11402 | s = expr_end; | |
11403 | continue; | |
11404 | ||
11405 | case '>': /* shift amount minus 32 */ | |
11406 | my_getExpression (&imm_expr, s); | |
11407 | check_absolute_expr (ip, &imm_expr); | |
11408 | if ((unsigned long) imm_expr.X_add_number < 32 | |
11409 | || (unsigned long) imm_expr.X_add_number > 63) | |
11410 | break; | |
df58fc94 RS |
11411 | INSERT_OPERAND (mips_opts.micromips, |
11412 | SHAMT, *ip, imm_expr.X_add_number - 32); | |
252b5132 RH |
11413 | imm_expr.X_op = O_absent; |
11414 | s = expr_end; | |
11415 | continue; | |
11416 | ||
90ecf173 MR |
11417 | case 'k': /* CACHE code. */ |
11418 | case 'h': /* PREFX code. */ | |
11419 | case '1': /* SYNC type. */ | |
252b5132 RH |
11420 | my_getExpression (&imm_expr, s); |
11421 | check_absolute_expr (ip, &imm_expr); | |
11422 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
11423 | as_warn (_("Invalid value for `%s' (%lu)"), |
11424 | ip->insn_mo->name, | |
11425 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11426 | switch (*args) |
d954098f | 11427 | { |
df58fc94 RS |
11428 | case 'k': |
11429 | if (mips_fix_cn63xxp1 | |
11430 | && !mips_opts.micromips | |
11431 | && strcmp ("pref", insn->name) == 0) | |
d954098f DD |
11432 | switch (imm_expr.X_add_number) |
11433 | { | |
11434 | case 5: | |
11435 | case 25: | |
11436 | case 26: | |
11437 | case 27: | |
11438 | case 28: | |
11439 | case 29: | |
11440 | case 30: | |
11441 | case 31: /* These are ok. */ | |
11442 | break; | |
11443 | ||
11444 | default: /* The rest must be changed to 28. */ | |
11445 | imm_expr.X_add_number = 28; | |
11446 | break; | |
11447 | } | |
df58fc94 RS |
11448 | INSERT_OPERAND (mips_opts.micromips, |
11449 | CACHE, *ip, imm_expr.X_add_number); | |
11450 | break; | |
11451 | case 'h': | |
11452 | INSERT_OPERAND (mips_opts.micromips, | |
11453 | PREFX, *ip, imm_expr.X_add_number); | |
11454 | break; | |
11455 | case '1': | |
11456 | INSERT_OPERAND (mips_opts.micromips, | |
11457 | STYPE, *ip, imm_expr.X_add_number); | |
11458 | break; | |
d954098f | 11459 | } |
252b5132 RH |
11460 | imm_expr.X_op = O_absent; |
11461 | s = expr_end; | |
11462 | continue; | |
11463 | ||
90ecf173 | 11464 | case 'c': /* BREAK code. */ |
df58fc94 RS |
11465 | { |
11466 | unsigned long mask = (mips_opts.micromips | |
11467 | ? MICROMIPSOP_MASK_CODE | |
11468 | : OP_MASK_CODE); | |
11469 | ||
11470 | my_getExpression (&imm_expr, s); | |
11471 | check_absolute_expr (ip, &imm_expr); | |
11472 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11473 | as_warn (_("Code for %s not in range 0..%lu (%lu)"), | |
11474 | ip->insn_mo->name, | |
11475 | mask, (unsigned long) imm_expr.X_add_number); | |
11476 | INSERT_OPERAND (mips_opts.micromips, | |
11477 | CODE, *ip, imm_expr.X_add_number); | |
11478 | imm_expr.X_op = O_absent; | |
11479 | s = expr_end; | |
11480 | } | |
252b5132 RH |
11481 | continue; |
11482 | ||
90ecf173 | 11483 | case 'q': /* Lower BREAK code. */ |
df58fc94 RS |
11484 | { |
11485 | unsigned long mask = (mips_opts.micromips | |
11486 | ? MICROMIPSOP_MASK_CODE2 | |
11487 | : OP_MASK_CODE2); | |
11488 | ||
11489 | my_getExpression (&imm_expr, s); | |
11490 | check_absolute_expr (ip, &imm_expr); | |
11491 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11492 | as_warn (_("Lower code for %s not in range 0..%lu (%lu)"), | |
11493 | ip->insn_mo->name, | |
11494 | mask, (unsigned long) imm_expr.X_add_number); | |
11495 | INSERT_OPERAND (mips_opts.micromips, | |
11496 | CODE2, *ip, imm_expr.X_add_number); | |
11497 | imm_expr.X_op = O_absent; | |
11498 | s = expr_end; | |
11499 | } | |
252b5132 RH |
11500 | continue; |
11501 | ||
df58fc94 RS |
11502 | case 'B': /* 20- or 10-bit syscall/break/wait code. */ |
11503 | { | |
11504 | unsigned long mask = (mips_opts.micromips | |
11505 | ? MICROMIPSOP_MASK_CODE10 | |
11506 | : OP_MASK_CODE20); | |
11507 | ||
11508 | my_getExpression (&imm_expr, s); | |
11509 | check_absolute_expr (ip, &imm_expr); | |
11510 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11511 | as_warn (_("Code for %s not in range 0..%lu (%lu)"), | |
11512 | ip->insn_mo->name, | |
11513 | mask, (unsigned long) imm_expr.X_add_number); | |
11514 | if (mips_opts.micromips) | |
11515 | INSERT_OPERAND (1, CODE10, *ip, imm_expr.X_add_number); | |
11516 | else | |
11517 | INSERT_OPERAND (0, CODE20, *ip, imm_expr.X_add_number); | |
11518 | imm_expr.X_op = O_absent; | |
11519 | s = expr_end; | |
11520 | } | |
252b5132 RH |
11521 | continue; |
11522 | ||
df58fc94 RS |
11523 | case 'C': /* 25- or 23-bit coprocessor code. */ |
11524 | { | |
11525 | unsigned long mask = (mips_opts.micromips | |
11526 | ? MICROMIPSOP_MASK_COPZ | |
11527 | : OP_MASK_COPZ); | |
11528 | ||
11529 | my_getExpression (&imm_expr, s); | |
11530 | check_absolute_expr (ip, &imm_expr); | |
11531 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11532 | as_warn (_("Coproccesor code > %u bits (%lu)"), | |
11533 | mips_opts.micromips ? 23U : 25U, | |
793b27f4 | 11534 | (unsigned long) imm_expr.X_add_number); |
df58fc94 RS |
11535 | INSERT_OPERAND (mips_opts.micromips, |
11536 | COPZ, *ip, imm_expr.X_add_number); | |
11537 | imm_expr.X_op = O_absent; | |
11538 | s = expr_end; | |
11539 | } | |
beae10d5 | 11540 | continue; |
252b5132 | 11541 | |
df58fc94 RS |
11542 | case 'J': /* 19-bit WAIT code. */ |
11543 | gas_assert (!mips_opts.micromips); | |
4372b673 NC |
11544 | my_getExpression (&imm_expr, s); |
11545 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 11546 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
df58fc94 RS |
11547 | { |
11548 | as_warn (_("Illegal 19-bit code (%lu)"), | |
a9e24354 | 11549 | (unsigned long) imm_expr.X_add_number); |
df58fc94 RS |
11550 | imm_expr.X_add_number &= OP_MASK_CODE19; |
11551 | } | |
11552 | INSERT_OPERAND (0, CODE19, *ip, imm_expr.X_add_number); | |
4372b673 NC |
11553 | imm_expr.X_op = O_absent; |
11554 | s = expr_end; | |
11555 | continue; | |
11556 | ||
707bfff6 | 11557 | case 'P': /* Performance register. */ |
df58fc94 | 11558 | gas_assert (!mips_opts.micromips); |
beae10d5 | 11559 | my_getExpression (&imm_expr, s); |
252b5132 | 11560 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 11561 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
bf12938e RS |
11562 | as_warn (_("Invalid performance register (%lu)"), |
11563 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11564 | INSERT_OPERAND (0, PERFREG, *ip, imm_expr.X_add_number); |
beae10d5 KH |
11565 | imm_expr.X_op = O_absent; |
11566 | s = expr_end; | |
11567 | continue; | |
252b5132 | 11568 | |
707bfff6 | 11569 | case 'G': /* Coprocessor destination register. */ |
df58fc94 RS |
11570 | { |
11571 | unsigned long opcode = ip->insn_opcode; | |
11572 | unsigned long mask; | |
11573 | unsigned int types; | |
11574 | int cop0; | |
11575 | ||
11576 | if (mips_opts.micromips) | |
11577 | { | |
11578 | mask = ~((MICROMIPSOP_MASK_RT << MICROMIPSOP_SH_RT) | |
11579 | | (MICROMIPSOP_MASK_RS << MICROMIPSOP_SH_RS) | |
11580 | | (MICROMIPSOP_MASK_SEL << MICROMIPSOP_SH_SEL)); | |
11581 | opcode &= mask; | |
11582 | switch (opcode) | |
11583 | { | |
11584 | case 0x000000fc: /* mfc0 */ | |
11585 | case 0x000002fc: /* mtc0 */ | |
11586 | case 0x580000fc: /* dmfc0 */ | |
11587 | case 0x580002fc: /* dmtc0 */ | |
11588 | cop0 = 1; | |
11589 | break; | |
11590 | default: | |
11591 | cop0 = 0; | |
11592 | break; | |
11593 | } | |
11594 | } | |
11595 | else | |
11596 | { | |
11597 | opcode = (opcode >> OP_SH_OP) & OP_MASK_OP; | |
11598 | cop0 = opcode == OP_OP_COP0; | |
11599 | } | |
11600 | types = RTYPE_NUM | (cop0 ? RTYPE_CP0 : RTYPE_GP); | |
11601 | ok = reg_lookup (&s, types, ®no); | |
11602 | if (mips_opts.micromips) | |
11603 | INSERT_OPERAND (1, RS, *ip, regno); | |
11604 | else | |
11605 | INSERT_OPERAND (0, RD, *ip, regno); | |
11606 | if (ok) | |
11607 | { | |
11608 | lastregno = regno; | |
11609 | continue; | |
11610 | } | |
11611 | } | |
11612 | break; | |
707bfff6 | 11613 | |
df58fc94 RS |
11614 | case 'y': /* ALNV.PS source register. */ |
11615 | gas_assert (mips_opts.micromips); | |
11616 | goto do_reg; | |
11617 | case 'x': /* Ignore register name. */ | |
11618 | case 'U': /* Destination register (CLO/CLZ). */ | |
11619 | case 'g': /* Coprocessor destination register. */ | |
11620 | gas_assert (!mips_opts.micromips); | |
90ecf173 MR |
11621 | case 'b': /* Base register. */ |
11622 | case 'd': /* Destination register. */ | |
11623 | case 's': /* Source register. */ | |
11624 | case 't': /* Target register. */ | |
11625 | case 'r': /* Both target and source. */ | |
11626 | case 'v': /* Both dest and source. */ | |
11627 | case 'w': /* Both dest and target. */ | |
11628 | case 'E': /* Coprocessor target register. */ | |
11629 | case 'K': /* RDHWR destination register. */ | |
90ecf173 | 11630 | case 'z': /* Must be zero register. */ |
df58fc94 | 11631 | do_reg: |
90ecf173 | 11632 | s_reset = s; |
707bfff6 TS |
11633 | if (*args == 'E' || *args == 'K') |
11634 | ok = reg_lookup (&s, RTYPE_NUM, ®no); | |
11635 | else | |
11636 | { | |
11637 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
741fe287 MR |
11638 | if (regno == AT && mips_opts.at) |
11639 | { | |
11640 | if (mips_opts.at == ATREG) | |
f71d0d44 | 11641 | as_warn (_("Used $at without \".set noat\"")); |
741fe287 | 11642 | else |
f71d0d44 | 11643 | as_warn (_("Used $%u with \".set at=$%u\""), |
741fe287 MR |
11644 | regno, mips_opts.at); |
11645 | } | |
707bfff6 TS |
11646 | } |
11647 | if (ok) | |
252b5132 | 11648 | { |
252b5132 RH |
11649 | c = *args; |
11650 | if (*s == ' ') | |
f9419b05 | 11651 | ++s; |
252b5132 RH |
11652 | if (args[1] != *s) |
11653 | { | |
11654 | if (c == 'r' || c == 'v' || c == 'w') | |
11655 | { | |
11656 | regno = lastregno; | |
11657 | s = s_reset; | |
f9419b05 | 11658 | ++args; |
252b5132 RH |
11659 | } |
11660 | } | |
11661 | /* 'z' only matches $0. */ | |
11662 | if (c == 'z' && regno != 0) | |
11663 | break; | |
11664 | ||
24864476 | 11665 | if (c == 's' && !strncmp (ip->insn_mo->name, "jalr", 4)) |
e7c604dd CM |
11666 | { |
11667 | if (regno == lastregno) | |
90ecf173 MR |
11668 | { |
11669 | insn_error | |
f71d0d44 | 11670 | = _("Source and destination must be different"); |
e7c604dd | 11671 | continue; |
90ecf173 | 11672 | } |
24864476 | 11673 | if (regno == 31 && lastregno == 0xffffffff) |
90ecf173 MR |
11674 | { |
11675 | insn_error | |
f71d0d44 | 11676 | = _("A destination register must be supplied"); |
e7c604dd | 11677 | continue; |
90ecf173 | 11678 | } |
e7c604dd | 11679 | } |
90ecf173 MR |
11680 | /* Now that we have assembled one operand, we use the args |
11681 | string to figure out where it goes in the instruction. */ | |
252b5132 RH |
11682 | switch (c) |
11683 | { | |
11684 | case 'r': | |
11685 | case 's': | |
11686 | case 'v': | |
11687 | case 'b': | |
df58fc94 | 11688 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, regno); |
252b5132 | 11689 | break; |
df58fc94 | 11690 | |
af7ee8bf | 11691 | case 'K': |
df58fc94 RS |
11692 | if (mips_opts.micromips) |
11693 | INSERT_OPERAND (1, RS, *ip, regno); | |
11694 | else | |
11695 | INSERT_OPERAND (0, RD, *ip, regno); | |
11696 | break; | |
11697 | ||
11698 | case 'd': | |
ef2e4d86 | 11699 | case 'g': |
df58fc94 | 11700 | INSERT_OPERAND (mips_opts.micromips, RD, *ip, regno); |
252b5132 | 11701 | break; |
df58fc94 | 11702 | |
4372b673 | 11703 | case 'U': |
df58fc94 RS |
11704 | gas_assert (!mips_opts.micromips); |
11705 | INSERT_OPERAND (0, RD, *ip, regno); | |
11706 | INSERT_OPERAND (0, RT, *ip, regno); | |
4372b673 | 11707 | break; |
df58fc94 | 11708 | |
252b5132 RH |
11709 | case 'w': |
11710 | case 't': | |
11711 | case 'E': | |
df58fc94 RS |
11712 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, regno); |
11713 | break; | |
11714 | ||
11715 | case 'y': | |
11716 | gas_assert (mips_opts.micromips); | |
11717 | INSERT_OPERAND (1, RS3, *ip, regno); | |
252b5132 | 11718 | break; |
df58fc94 | 11719 | |
252b5132 RH |
11720 | case 'x': |
11721 | /* This case exists because on the r3000 trunc | |
11722 | expands into a macro which requires a gp | |
11723 | register. On the r6000 or r4000 it is | |
11724 | assembled into a single instruction which | |
11725 | ignores the register. Thus the insn version | |
11726 | is MIPS_ISA2 and uses 'x', and the macro | |
11727 | version is MIPS_ISA1 and uses 't'. */ | |
11728 | break; | |
df58fc94 | 11729 | |
252b5132 RH |
11730 | case 'z': |
11731 | /* This case is for the div instruction, which | |
11732 | acts differently if the destination argument | |
11733 | is $0. This only matches $0, and is checked | |
11734 | outside the switch. */ | |
11735 | break; | |
252b5132 RH |
11736 | } |
11737 | lastregno = regno; | |
11738 | continue; | |
11739 | } | |
252b5132 RH |
11740 | switch (*args++) |
11741 | { | |
11742 | case 'r': | |
11743 | case 'v': | |
df58fc94 | 11744 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, lastregno); |
252b5132 | 11745 | continue; |
df58fc94 | 11746 | |
252b5132 | 11747 | case 'w': |
df58fc94 | 11748 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, lastregno); |
252b5132 RH |
11749 | continue; |
11750 | } | |
11751 | break; | |
11752 | ||
deec1734 | 11753 | case 'O': /* MDMX alignment immediate constant. */ |
df58fc94 | 11754 | gas_assert (!mips_opts.micromips); |
deec1734 CD |
11755 | my_getExpression (&imm_expr, s); |
11756 | check_absolute_expr (ip, &imm_expr); | |
11757 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
20203fb9 | 11758 | as_warn (_("Improper align amount (%ld), using low bits"), |
bf12938e | 11759 | (long) imm_expr.X_add_number); |
df58fc94 | 11760 | INSERT_OPERAND (0, ALN, *ip, imm_expr.X_add_number); |
deec1734 CD |
11761 | imm_expr.X_op = O_absent; |
11762 | s = expr_end; | |
11763 | continue; | |
11764 | ||
11765 | case 'Q': /* MDMX vector, element sel, or const. */ | |
11766 | if (s[0] != '$') | |
11767 | { | |
11768 | /* MDMX Immediate. */ | |
df58fc94 | 11769 | gas_assert (!mips_opts.micromips); |
deec1734 CD |
11770 | my_getExpression (&imm_expr, s); |
11771 | check_absolute_expr (ip, &imm_expr); | |
11772 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
bf12938e RS |
11773 | as_warn (_("Invalid MDMX Immediate (%ld)"), |
11774 | (long) imm_expr.X_add_number); | |
df58fc94 | 11775 | INSERT_OPERAND (0, FT, *ip, imm_expr.X_add_number); |
deec1734 CD |
11776 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) |
11777 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
11778 | else | |
11779 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
deec1734 CD |
11780 | imm_expr.X_op = O_absent; |
11781 | s = expr_end; | |
11782 | continue; | |
11783 | } | |
11784 | /* Not MDMX Immediate. Fall through. */ | |
11785 | case 'X': /* MDMX destination register. */ | |
11786 | case 'Y': /* MDMX source register. */ | |
11787 | case 'Z': /* MDMX target register. */ | |
11788 | is_mdmx = 1; | |
df58fc94 RS |
11789 | case 'W': |
11790 | gas_assert (!mips_opts.micromips); | |
90ecf173 MR |
11791 | case 'D': /* Floating point destination register. */ |
11792 | case 'S': /* Floating point source register. */ | |
11793 | case 'T': /* Floating point target register. */ | |
11794 | case 'R': /* Floating point source register. */ | |
252b5132 | 11795 | case 'V': |
707bfff6 TS |
11796 | rtype = RTYPE_FPU; |
11797 | if (is_mdmx | |
11798 | || (mips_opts.ase_mdmx | |
11799 | && (ip->insn_mo->pinfo & FP_D) | |
11800 | && (ip->insn_mo->pinfo & (INSN_COPROC_MOVE_DELAY | |
11801 | | INSN_COPROC_MEMORY_DELAY | |
11802 | | INSN_LOAD_COPROC_DELAY | |
11803 | | INSN_LOAD_MEMORY_DELAY | |
11804 | | INSN_STORE_MEMORY)))) | |
11805 | rtype |= RTYPE_VEC; | |
252b5132 | 11806 | s_reset = s; |
707bfff6 | 11807 | if (reg_lookup (&s, rtype, ®no)) |
252b5132 | 11808 | { |
252b5132 | 11809 | if ((regno & 1) != 0 |
ca4e0257 | 11810 | && HAVE_32BIT_FPRS |
90ecf173 | 11811 | && !mips_oddfpreg_ok (ip->insn_mo, argnum)) |
252b5132 RH |
11812 | as_warn (_("Float register should be even, was %d"), |
11813 | regno); | |
11814 | ||
11815 | c = *args; | |
11816 | if (*s == ' ') | |
f9419b05 | 11817 | ++s; |
252b5132 RH |
11818 | if (args[1] != *s) |
11819 | { | |
11820 | if (c == 'V' || c == 'W') | |
11821 | { | |
11822 | regno = lastregno; | |
11823 | s = s_reset; | |
f9419b05 | 11824 | ++args; |
252b5132 RH |
11825 | } |
11826 | } | |
11827 | switch (c) | |
11828 | { | |
11829 | case 'D': | |
deec1734 | 11830 | case 'X': |
df58fc94 | 11831 | INSERT_OPERAND (mips_opts.micromips, FD, *ip, regno); |
252b5132 | 11832 | break; |
df58fc94 | 11833 | |
252b5132 RH |
11834 | case 'V': |
11835 | case 'S': | |
deec1734 | 11836 | case 'Y': |
df58fc94 | 11837 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, regno); |
252b5132 | 11838 | break; |
df58fc94 | 11839 | |
deec1734 CD |
11840 | case 'Q': |
11841 | /* This is like 'Z', but also needs to fix the MDMX | |
11842 | vector/scalar select bits. Note that the | |
11843 | scalar immediate case is handled above. */ | |
11844 | if (*s == '[') | |
11845 | { | |
11846 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
11847 | int max_el = (is_qh ? 3 : 7); | |
11848 | s++; | |
11849 | my_getExpression(&imm_expr, s); | |
11850 | check_absolute_expr (ip, &imm_expr); | |
11851 | s = expr_end; | |
11852 | if (imm_expr.X_add_number > max_el) | |
20203fb9 NC |
11853 | as_bad (_("Bad element selector %ld"), |
11854 | (long) imm_expr.X_add_number); | |
deec1734 CD |
11855 | imm_expr.X_add_number &= max_el; |
11856 | ip->insn_opcode |= (imm_expr.X_add_number | |
11857 | << (OP_SH_VSEL + | |
11858 | (is_qh ? 2 : 1))); | |
01a3f561 | 11859 | imm_expr.X_op = O_absent; |
deec1734 | 11860 | if (*s != ']') |
20203fb9 | 11861 | as_warn (_("Expecting ']' found '%s'"), s); |
deec1734 CD |
11862 | else |
11863 | s++; | |
11864 | } | |
11865 | else | |
11866 | { | |
11867 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
11868 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
11869 | << OP_SH_VSEL); | |
11870 | else | |
11871 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
11872 | OP_SH_VSEL); | |
11873 | } | |
90ecf173 | 11874 | /* Fall through. */ |
252b5132 RH |
11875 | case 'W': |
11876 | case 'T': | |
deec1734 | 11877 | case 'Z': |
df58fc94 | 11878 | INSERT_OPERAND (mips_opts.micromips, FT, *ip, regno); |
252b5132 | 11879 | break; |
df58fc94 | 11880 | |
252b5132 | 11881 | case 'R': |
df58fc94 | 11882 | INSERT_OPERAND (mips_opts.micromips, FR, *ip, regno); |
252b5132 RH |
11883 | break; |
11884 | } | |
11885 | lastregno = regno; | |
11886 | continue; | |
11887 | } | |
11888 | ||
252b5132 RH |
11889 | switch (*args++) |
11890 | { | |
11891 | case 'V': | |
df58fc94 | 11892 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, lastregno); |
252b5132 | 11893 | continue; |
df58fc94 | 11894 | |
252b5132 | 11895 | case 'W': |
df58fc94 | 11896 | INSERT_OPERAND (mips_opts.micromips, FT, *ip, lastregno); |
252b5132 RH |
11897 | continue; |
11898 | } | |
11899 | break; | |
11900 | ||
11901 | case 'I': | |
11902 | my_getExpression (&imm_expr, s); | |
11903 | if (imm_expr.X_op != O_big | |
11904 | && imm_expr.X_op != O_constant) | |
11905 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
11906 | if (HAVE_32BIT_GPRS) |
11907 | normalize_constant_expr (&imm_expr); | |
252b5132 RH |
11908 | s = expr_end; |
11909 | continue; | |
11910 | ||
11911 | case 'A': | |
11912 | my_getExpression (&offset_expr, s); | |
2051e8c4 | 11913 | normalize_address_expr (&offset_expr); |
f6688943 | 11914 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
11915 | s = expr_end; |
11916 | continue; | |
11917 | ||
11918 | case 'F': | |
11919 | case 'L': | |
11920 | case 'f': | |
11921 | case 'l': | |
11922 | { | |
11923 | int f64; | |
ca4e0257 | 11924 | int using_gprs; |
252b5132 RH |
11925 | char *save_in; |
11926 | char *err; | |
11927 | unsigned char temp[8]; | |
11928 | int len; | |
11929 | unsigned int length; | |
11930 | segT seg; | |
11931 | subsegT subseg; | |
11932 | char *p; | |
11933 | ||
11934 | /* These only appear as the last operand in an | |
11935 | instruction, and every instruction that accepts | |
11936 | them in any variant accepts them in all variants. | |
11937 | This means we don't have to worry about backing out | |
11938 | any changes if the instruction does not match. | |
11939 | ||
11940 | The difference between them is the size of the | |
11941 | floating point constant and where it goes. For 'F' | |
11942 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
11943 | is 32 bits. Where the constant is placed is based | |
11944 | on how the MIPS assembler does things: | |
11945 | F -- .rdata | |
11946 | L -- .lit8 | |
11947 | f -- immediate value | |
11948 | l -- .lit4 | |
11949 | ||
11950 | The .lit4 and .lit8 sections are only used if | |
11951 | permitted by the -G argument. | |
11952 | ||
ca4e0257 RS |
11953 | The code below needs to know whether the target register |
11954 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
11955 | 'F' are used with GPR-based instructions and 'l' and | |
11956 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
11957 | |
11958 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 11959 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
11960 | |
11961 | save_in = input_line_pointer; | |
11962 | input_line_pointer = s; | |
11963 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
11964 | length = len; | |
11965 | s = input_line_pointer; | |
11966 | input_line_pointer = save_in; | |
11967 | if (err != NULL && *err != '\0') | |
11968 | { | |
11969 | as_bad (_("Bad floating point constant: %s"), err); | |
11970 | memset (temp, '\0', sizeof temp); | |
11971 | length = f64 ? 8 : 4; | |
11972 | } | |
11973 | ||
9c2799c2 | 11974 | gas_assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
11975 | |
11976 | if (*args == 'f' | |
11977 | || (*args == 'l' | |
3e722fb5 | 11978 | && (g_switch_value < 4 |
252b5132 RH |
11979 | || (temp[0] == 0 && temp[1] == 0) |
11980 | || (temp[2] == 0 && temp[3] == 0)))) | |
11981 | { | |
11982 | imm_expr.X_op = O_constant; | |
90ecf173 | 11983 | if (!target_big_endian) |
252b5132 RH |
11984 | imm_expr.X_add_number = bfd_getl32 (temp); |
11985 | else | |
11986 | imm_expr.X_add_number = bfd_getb32 (temp); | |
11987 | } | |
11988 | else if (length > 4 | |
90ecf173 | 11989 | && !mips_disable_float_construction |
ca4e0257 RS |
11990 | /* Constants can only be constructed in GPRs and |
11991 | copied to FPRs if the GPRs are at least as wide | |
11992 | as the FPRs. Force the constant into memory if | |
11993 | we are using 64-bit FPRs but the GPRs are only | |
11994 | 32 bits wide. */ | |
11995 | && (using_gprs | |
90ecf173 | 11996 | || !(HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) |
252b5132 RH |
11997 | && ((temp[0] == 0 && temp[1] == 0) |
11998 | || (temp[2] == 0 && temp[3] == 0)) | |
11999 | && ((temp[4] == 0 && temp[5] == 0) | |
12000 | || (temp[6] == 0 && temp[7] == 0))) | |
12001 | { | |
ca4e0257 | 12002 | /* The value is simple enough to load with a couple of |
90ecf173 MR |
12003 | instructions. If using 32-bit registers, set |
12004 | imm_expr to the high order 32 bits and offset_expr to | |
12005 | the low order 32 bits. Otherwise, set imm_expr to | |
12006 | the entire 64 bit constant. */ | |
ca4e0257 | 12007 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) |
252b5132 RH |
12008 | { |
12009 | imm_expr.X_op = O_constant; | |
12010 | offset_expr.X_op = O_constant; | |
90ecf173 | 12011 | if (!target_big_endian) |
252b5132 RH |
12012 | { |
12013 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
12014 | offset_expr.X_add_number = bfd_getl32 (temp); | |
12015 | } | |
12016 | else | |
12017 | { | |
12018 | imm_expr.X_add_number = bfd_getb32 (temp); | |
12019 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
12020 | } | |
12021 | if (offset_expr.X_add_number == 0) | |
12022 | offset_expr.X_op = O_absent; | |
12023 | } | |
12024 | else if (sizeof (imm_expr.X_add_number) > 4) | |
12025 | { | |
12026 | imm_expr.X_op = O_constant; | |
90ecf173 | 12027 | if (!target_big_endian) |
252b5132 RH |
12028 | imm_expr.X_add_number = bfd_getl64 (temp); |
12029 | else | |
12030 | imm_expr.X_add_number = bfd_getb64 (temp); | |
12031 | } | |
12032 | else | |
12033 | { | |
12034 | imm_expr.X_op = O_big; | |
12035 | imm_expr.X_add_number = 4; | |
90ecf173 | 12036 | if (!target_big_endian) |
252b5132 RH |
12037 | { |
12038 | generic_bignum[0] = bfd_getl16 (temp); | |
12039 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
12040 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
12041 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
12042 | } | |
12043 | else | |
12044 | { | |
12045 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
12046 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
12047 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
12048 | generic_bignum[3] = bfd_getb16 (temp); | |
12049 | } | |
12050 | } | |
12051 | } | |
12052 | else | |
12053 | { | |
12054 | const char *newname; | |
12055 | segT new_seg; | |
12056 | ||
12057 | /* Switch to the right section. */ | |
12058 | seg = now_seg; | |
12059 | subseg = now_subseg; | |
12060 | switch (*args) | |
12061 | { | |
12062 | default: /* unused default case avoids warnings. */ | |
12063 | case 'L': | |
12064 | newname = RDATA_SECTION_NAME; | |
3e722fb5 | 12065 | if (g_switch_value >= 8) |
252b5132 RH |
12066 | newname = ".lit8"; |
12067 | break; | |
12068 | case 'F': | |
3e722fb5 | 12069 | newname = RDATA_SECTION_NAME; |
252b5132 RH |
12070 | break; |
12071 | case 'l': | |
9c2799c2 | 12072 | gas_assert (g_switch_value >= 4); |
252b5132 RH |
12073 | newname = ".lit4"; |
12074 | break; | |
12075 | } | |
12076 | new_seg = subseg_new (newname, (subsegT) 0); | |
f43abd2b | 12077 | if (IS_ELF) |
252b5132 RH |
12078 | bfd_set_section_flags (stdoutput, new_seg, |
12079 | (SEC_ALLOC | |
12080 | | SEC_LOAD | |
12081 | | SEC_READONLY | |
12082 | | SEC_DATA)); | |
12083 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
c41e87e3 | 12084 | if (IS_ELF && strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
12085 | record_alignment (new_seg, 4); |
12086 | else | |
12087 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
12088 | if (seg == now_seg) | |
12089 | as_bad (_("Can't use floating point insn in this section")); | |
12090 | ||
df58fc94 RS |
12091 | /* Set the argument to the current address in the |
12092 | section. */ | |
12093 | offset_expr.X_op = O_symbol; | |
12094 | offset_expr.X_add_symbol = symbol_temp_new_now (); | |
12095 | offset_expr.X_add_number = 0; | |
12096 | ||
12097 | /* Put the floating point number into the section. */ | |
12098 | p = frag_more ((int) length); | |
12099 | memcpy (p, temp, length); | |
12100 | ||
12101 | /* Switch back to the original section. */ | |
12102 | subseg_set (seg, subseg); | |
12103 | } | |
12104 | } | |
12105 | continue; | |
12106 | ||
12107 | case 'i': /* 16-bit unsigned immediate. */ | |
12108 | case 'j': /* 16-bit signed immediate. */ | |
12109 | *imm_reloc = BFD_RELOC_LO16; | |
12110 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0) | |
12111 | { | |
12112 | int more; | |
12113 | offsetT minval, maxval; | |
12114 | ||
12115 | more = (insn + 1 < past | |
12116 | && strcmp (insn->name, insn[1].name) == 0); | |
12117 | ||
12118 | /* If the expression was written as an unsigned number, | |
12119 | only treat it as signed if there are no more | |
12120 | alternatives. */ | |
12121 | if (more | |
12122 | && *args == 'j' | |
12123 | && sizeof (imm_expr.X_add_number) <= 4 | |
12124 | && imm_expr.X_op == O_constant | |
12125 | && imm_expr.X_add_number < 0 | |
12126 | && imm_expr.X_unsigned | |
12127 | && HAVE_64BIT_GPRS) | |
12128 | break; | |
12129 | ||
12130 | /* For compatibility with older assemblers, we accept | |
12131 | 0x8000-0xffff as signed 16-bit numbers when only | |
12132 | signed numbers are allowed. */ | |
12133 | if (*args == 'i') | |
12134 | minval = 0, maxval = 0xffff; | |
12135 | else if (more) | |
12136 | minval = -0x8000, maxval = 0x7fff; | |
12137 | else | |
12138 | minval = -0x8000, maxval = 0xffff; | |
12139 | ||
12140 | if (imm_expr.X_op != O_constant | |
12141 | || imm_expr.X_add_number < minval | |
12142 | || imm_expr.X_add_number > maxval) | |
12143 | { | |
12144 | if (more) | |
12145 | break; | |
12146 | if (imm_expr.X_op == O_constant | |
12147 | || imm_expr.X_op == O_big) | |
12148 | as_bad (_("Expression out of range")); | |
12149 | } | |
12150 | } | |
12151 | s = expr_end; | |
12152 | continue; | |
12153 | ||
12154 | case 'o': /* 16-bit offset. */ | |
12155 | offset_reloc[0] = BFD_RELOC_LO16; | |
12156 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
12157 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
12158 | ||
12159 | /* Check whether there is only a single bracketed expression | |
12160 | left. If so, it must be the base register and the | |
12161 | constant must be zero. */ | |
12162 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12163 | { | |
12164 | offset_expr.X_op = O_constant; | |
12165 | offset_expr.X_add_number = 0; | |
12166 | continue; | |
12167 | } | |
12168 | ||
12169 | /* If this value won't fit into a 16 bit offset, then go | |
12170 | find a macro that will generate the 32 bit offset | |
12171 | code pattern. */ | |
12172 | if (my_getSmallExpression (&offset_expr, offset_reloc, s) == 0 | |
12173 | && (offset_expr.X_op != O_constant | |
12174 | || offset_expr.X_add_number >= 0x8000 | |
12175 | || offset_expr.X_add_number < -0x8000)) | |
12176 | break; | |
12177 | ||
12178 | s = expr_end; | |
12179 | continue; | |
12180 | ||
12181 | case 'p': /* PC-relative offset. */ | |
12182 | *offset_reloc = BFD_RELOC_16_PCREL_S2; | |
12183 | my_getExpression (&offset_expr, s); | |
12184 | s = expr_end; | |
12185 | continue; | |
12186 | ||
12187 | case 'u': /* Upper 16 bits. */ | |
12188 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0 | |
12189 | && imm_expr.X_op == O_constant | |
12190 | && (imm_expr.X_add_number < 0 | |
12191 | || imm_expr.X_add_number >= 0x10000)) | |
12192 | as_bad (_("lui expression (%lu) not in range 0..65535"), | |
12193 | (unsigned long) imm_expr.X_add_number); | |
12194 | s = expr_end; | |
12195 | continue; | |
12196 | ||
12197 | case 'a': /* 26-bit address. */ | |
12198 | *offset_reloc = BFD_RELOC_MIPS_JMP; | |
12199 | my_getExpression (&offset_expr, s); | |
12200 | s = expr_end; | |
12201 | continue; | |
12202 | ||
12203 | case 'N': /* 3-bit branch condition code. */ | |
12204 | case 'M': /* 3-bit compare condition code. */ | |
12205 | rtype = RTYPE_CCC; | |
12206 | if (ip->insn_mo->pinfo & (FP_D | FP_S)) | |
12207 | rtype |= RTYPE_FCC; | |
12208 | if (!reg_lookup (&s, rtype, ®no)) | |
12209 | break; | |
12210 | if ((strcmp (str + strlen (str) - 3, ".ps") == 0 | |
12211 | || strcmp (str + strlen (str) - 5, "any2f") == 0 | |
12212 | || strcmp (str + strlen (str) - 5, "any2t") == 0) | |
12213 | && (regno & 1) != 0) | |
12214 | as_warn (_("Condition code register should be even for %s, " | |
12215 | "was %d"), | |
12216 | str, regno); | |
12217 | if ((strcmp (str + strlen (str) - 5, "any4f") == 0 | |
12218 | || strcmp (str + strlen (str) - 5, "any4t") == 0) | |
12219 | && (regno & 3) != 0) | |
12220 | as_warn (_("Condition code register should be 0 or 4 for %s, " | |
12221 | "was %d"), | |
12222 | str, regno); | |
12223 | if (*args == 'N') | |
12224 | INSERT_OPERAND (mips_opts.micromips, BCC, *ip, regno); | |
12225 | else | |
12226 | INSERT_OPERAND (mips_opts.micromips, CCC, *ip, regno); | |
12227 | continue; | |
12228 | ||
12229 | case 'H': | |
12230 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
12231 | s += 2; | |
12232 | if (ISDIGIT (*s)) | |
12233 | { | |
12234 | c = 0; | |
12235 | do | |
12236 | { | |
12237 | c *= 10; | |
12238 | c += *s - '0'; | |
12239 | ++s; | |
12240 | } | |
12241 | while (ISDIGIT (*s)); | |
12242 | } | |
12243 | else | |
12244 | c = 8; /* Invalid sel value. */ | |
12245 | ||
12246 | if (c > 7) | |
12247 | as_bad (_("Invalid coprocessor sub-selection value (0-7)")); | |
12248 | INSERT_OPERAND (mips_opts.micromips, SEL, *ip, c); | |
12249 | continue; | |
12250 | ||
12251 | case 'e': | |
12252 | gas_assert (!mips_opts.micromips); | |
12253 | /* Must be at least one digit. */ | |
12254 | my_getExpression (&imm_expr, s); | |
12255 | check_absolute_expr (ip, &imm_expr); | |
12256 | ||
12257 | if ((unsigned long) imm_expr.X_add_number | |
12258 | > (unsigned long) OP_MASK_VECBYTE) | |
12259 | { | |
12260 | as_bad (_("bad byte vector index (%ld)"), | |
12261 | (long) imm_expr.X_add_number); | |
12262 | imm_expr.X_add_number = 0; | |
12263 | } | |
12264 | ||
12265 | INSERT_OPERAND (0, VECBYTE, *ip, imm_expr.X_add_number); | |
12266 | imm_expr.X_op = O_absent; | |
12267 | s = expr_end; | |
12268 | continue; | |
12269 | ||
12270 | case '%': | |
12271 | gas_assert (!mips_opts.micromips); | |
12272 | my_getExpression (&imm_expr, s); | |
12273 | check_absolute_expr (ip, &imm_expr); | |
12274 | ||
12275 | if ((unsigned long) imm_expr.X_add_number | |
12276 | > (unsigned long) OP_MASK_VECALIGN) | |
12277 | { | |
12278 | as_bad (_("bad byte vector index (%ld)"), | |
12279 | (long) imm_expr.X_add_number); | |
12280 | imm_expr.X_add_number = 0; | |
12281 | } | |
12282 | ||
12283 | INSERT_OPERAND (0, VECALIGN, *ip, imm_expr.X_add_number); | |
12284 | imm_expr.X_op = O_absent; | |
12285 | s = expr_end; | |
12286 | continue; | |
12287 | ||
12288 | case 'm': /* Opcode extension character. */ | |
12289 | gas_assert (mips_opts.micromips); | |
12290 | c = *++args; | |
12291 | switch (c) | |
12292 | { | |
12293 | case 'r': | |
12294 | if (strncmp (s, "$pc", 3) == 0) | |
12295 | { | |
12296 | s += 3; | |
12297 | continue; | |
12298 | } | |
12299 | break; | |
12300 | ||
12301 | case 'a': | |
12302 | case 'b': | |
12303 | case 'c': | |
12304 | case 'd': | |
12305 | case 'e': | |
12306 | case 'f': | |
12307 | case 'g': | |
12308 | case 'h': | |
12309 | case 'i': | |
12310 | case 'j': | |
12311 | case 'l': | |
12312 | case 'm': | |
12313 | case 'n': | |
12314 | case 'p': | |
12315 | case 'q': | |
12316 | case 's': | |
12317 | case 't': | |
12318 | case 'x': | |
12319 | case 'y': | |
12320 | case 'z': | |
12321 | s_reset = s; | |
12322 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
12323 | if (regno == AT && mips_opts.at) | |
12324 | { | |
12325 | if (mips_opts.at == ATREG) | |
12326 | as_warn (_("Used $at without \".set noat\"")); | |
12327 | else | |
12328 | as_warn (_("Used $%u with \".set at=$%u\""), | |
12329 | regno, mips_opts.at); | |
12330 | } | |
12331 | if (!ok) | |
12332 | { | |
12333 | if (c == 'c') | |
12334 | { | |
12335 | gas_assert (args[1] == ','); | |
12336 | regno = lastregno; | |
12337 | ++args; | |
12338 | } | |
12339 | else if (c == 't') | |
12340 | { | |
12341 | gas_assert (args[1] == ','); | |
12342 | ++args; | |
12343 | continue; /* Nothing to do. */ | |
12344 | } | |
12345 | else | |
12346 | break; | |
12347 | } | |
12348 | ||
12349 | if (c == 'j' && !strncmp (ip->insn_mo->name, "jalr", 4)) | |
12350 | { | |
12351 | if (regno == lastregno) | |
12352 | { | |
12353 | insn_error | |
12354 | = _("Source and destination must be different"); | |
12355 | continue; | |
12356 | } | |
12357 | if (regno == 31 && lastregno == 0xffffffff) | |
12358 | { | |
12359 | insn_error | |
12360 | = _("A destination register must be supplied"); | |
12361 | continue; | |
12362 | } | |
12363 | } | |
12364 | ||
12365 | if (*s == ' ') | |
12366 | ++s; | |
12367 | if (args[1] != *s) | |
12368 | { | |
12369 | if (c == 'e') | |
12370 | { | |
12371 | gas_assert (args[1] == ','); | |
12372 | regno = lastregno; | |
12373 | s = s_reset; | |
12374 | ++args; | |
12375 | } | |
12376 | else if (c == 't') | |
12377 | { | |
12378 | gas_assert (args[1] == ','); | |
12379 | s = s_reset; | |
12380 | ++args; | |
12381 | continue; /* Nothing to do. */ | |
12382 | } | |
12383 | } | |
12384 | ||
12385 | /* Make sure regno is the same as lastregno. */ | |
12386 | if (c == 't' && regno != lastregno) | |
12387 | break; | |
12388 | ||
12389 | /* Make sure regno is the same as destregno. */ | |
12390 | if (c == 'x' && regno != destregno) | |
12391 | break; | |
12392 | ||
12393 | /* We need to save regno, before regno maps to the | |
12394 | microMIPS register encoding. */ | |
12395 | lastregno = regno; | |
12396 | ||
12397 | if (c == 'f') | |
12398 | destregno = regno; | |
12399 | ||
12400 | switch (c) | |
12401 | { | |
12402 | case 'a': | |
12403 | if (regno != GP) | |
12404 | regno = ILLEGAL_REG; | |
12405 | break; | |
12406 | ||
12407 | case 'b': | |
12408 | regno = mips32_to_micromips_reg_b_map[regno]; | |
12409 | break; | |
12410 | ||
12411 | case 'c': | |
12412 | regno = mips32_to_micromips_reg_c_map[regno]; | |
12413 | break; | |
12414 | ||
12415 | case 'd': | |
12416 | regno = mips32_to_micromips_reg_d_map[regno]; | |
12417 | break; | |
12418 | ||
12419 | case 'e': | |
12420 | regno = mips32_to_micromips_reg_e_map[regno]; | |
12421 | break; | |
12422 | ||
12423 | case 'f': | |
12424 | regno = mips32_to_micromips_reg_f_map[regno]; | |
12425 | break; | |
12426 | ||
12427 | case 'g': | |
12428 | regno = mips32_to_micromips_reg_g_map[regno]; | |
12429 | break; | |
12430 | ||
12431 | case 'h': | |
12432 | regno = mips32_to_micromips_reg_h_map[regno]; | |
12433 | break; | |
12434 | ||
12435 | case 'i': | |
12436 | switch (EXTRACT_OPERAND (1, MI, *ip)) | |
12437 | { | |
12438 | case 4: | |
12439 | if (regno == 21) | |
12440 | regno = 3; | |
12441 | else if (regno == 22) | |
12442 | regno = 4; | |
12443 | else if (regno == 5) | |
12444 | regno = 5; | |
12445 | else if (regno == 6) | |
12446 | regno = 6; | |
12447 | else if (regno == 7) | |
12448 | regno = 7; | |
12449 | else | |
12450 | regno = ILLEGAL_REG; | |
12451 | break; | |
12452 | ||
12453 | case 5: | |
12454 | if (regno == 6) | |
12455 | regno = 0; | |
12456 | else if (regno == 7) | |
12457 | regno = 1; | |
12458 | else | |
12459 | regno = ILLEGAL_REG; | |
12460 | break; | |
12461 | ||
12462 | case 6: | |
12463 | if (regno == 7) | |
12464 | regno = 2; | |
12465 | else | |
12466 | regno = ILLEGAL_REG; | |
12467 | break; | |
12468 | ||
12469 | default: | |
12470 | regno = ILLEGAL_REG; | |
12471 | break; | |
12472 | } | |
12473 | break; | |
12474 | ||
12475 | case 'l': | |
12476 | regno = mips32_to_micromips_reg_l_map[regno]; | |
12477 | break; | |
12478 | ||
12479 | case 'm': | |
12480 | regno = mips32_to_micromips_reg_m_map[regno]; | |
12481 | break; | |
12482 | ||
12483 | case 'n': | |
12484 | regno = mips32_to_micromips_reg_n_map[regno]; | |
12485 | break; | |
12486 | ||
12487 | case 'q': | |
12488 | regno = mips32_to_micromips_reg_q_map[regno]; | |
12489 | break; | |
12490 | ||
12491 | case 's': | |
12492 | if (regno != SP) | |
12493 | regno = ILLEGAL_REG; | |
12494 | break; | |
12495 | ||
12496 | case 'y': | |
12497 | if (regno != 31) | |
12498 | regno = ILLEGAL_REG; | |
12499 | break; | |
12500 | ||
12501 | case 'z': | |
12502 | if (regno != ZERO) | |
12503 | regno = ILLEGAL_REG; | |
12504 | break; | |
12505 | ||
12506 | case 'j': /* Do nothing. */ | |
12507 | case 'p': | |
12508 | case 't': | |
12509 | case 'x': | |
12510 | break; | |
12511 | ||
12512 | default: | |
12513 | internalError (); | |
12514 | } | |
12515 | ||
12516 | if (regno == ILLEGAL_REG) | |
12517 | break; | |
12518 | ||
12519 | switch (c) | |
12520 | { | |
12521 | case 'b': | |
12522 | INSERT_OPERAND (1, MB, *ip, regno); | |
12523 | break; | |
12524 | ||
12525 | case 'c': | |
12526 | INSERT_OPERAND (1, MC, *ip, regno); | |
12527 | break; | |
12528 | ||
12529 | case 'd': | |
12530 | INSERT_OPERAND (1, MD, *ip, regno); | |
12531 | break; | |
12532 | ||
12533 | case 'e': | |
12534 | INSERT_OPERAND (1, ME, *ip, regno); | |
12535 | break; | |
12536 | ||
12537 | case 'f': | |
12538 | INSERT_OPERAND (1, MF, *ip, regno); | |
12539 | break; | |
12540 | ||
12541 | case 'g': | |
12542 | INSERT_OPERAND (1, MG, *ip, regno); | |
12543 | break; | |
12544 | ||
12545 | case 'h': | |
12546 | INSERT_OPERAND (1, MH, *ip, regno); | |
12547 | break; | |
12548 | ||
12549 | case 'i': | |
12550 | INSERT_OPERAND (1, MI, *ip, regno); | |
12551 | break; | |
12552 | ||
12553 | case 'j': | |
12554 | INSERT_OPERAND (1, MJ, *ip, regno); | |
12555 | break; | |
12556 | ||
12557 | case 'l': | |
12558 | INSERT_OPERAND (1, ML, *ip, regno); | |
12559 | break; | |
12560 | ||
12561 | case 'm': | |
12562 | INSERT_OPERAND (1, MM, *ip, regno); | |
12563 | break; | |
12564 | ||
12565 | case 'n': | |
12566 | INSERT_OPERAND (1, MN, *ip, regno); | |
12567 | break; | |
12568 | ||
12569 | case 'p': | |
12570 | INSERT_OPERAND (1, MP, *ip, regno); | |
12571 | break; | |
12572 | ||
12573 | case 'q': | |
12574 | INSERT_OPERAND (1, MQ, *ip, regno); | |
12575 | break; | |
12576 | ||
12577 | case 'a': /* Do nothing. */ | |
12578 | case 's': /* Do nothing. */ | |
12579 | case 't': /* Do nothing. */ | |
12580 | case 'x': /* Do nothing. */ | |
12581 | case 'y': /* Do nothing. */ | |
12582 | case 'z': /* Do nothing. */ | |
12583 | break; | |
12584 | ||
12585 | default: | |
12586 | internalError (); | |
12587 | } | |
12588 | continue; | |
12589 | ||
12590 | case 'A': | |
12591 | { | |
12592 | bfd_reloc_code_real_type r[3]; | |
12593 | expressionS ep; | |
12594 | int imm; | |
12595 | ||
12596 | /* Check whether there is only a single bracketed | |
12597 | expression left. If so, it must be the base register | |
12598 | and the constant must be zero. */ | |
12599 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12600 | { | |
12601 | INSERT_OPERAND (1, IMMA, *ip, 0); | |
12602 | continue; | |
12603 | } | |
12604 | ||
12605 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12606 | || !expr_const_in_range (&ep, -64, 64, 2)) | |
12607 | break; | |
12608 | ||
12609 | imm = ep.X_add_number >> 2; | |
12610 | INSERT_OPERAND (1, IMMA, *ip, imm); | |
12611 | } | |
12612 | s = expr_end; | |
12613 | continue; | |
12614 | ||
12615 | case 'B': | |
12616 | { | |
12617 | bfd_reloc_code_real_type r[3]; | |
12618 | expressionS ep; | |
12619 | int imm; | |
12620 | ||
12621 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12622 | || ep.X_op != O_constant) | |
12623 | break; | |
12624 | ||
12625 | for (imm = 0; imm < 8; imm++) | |
12626 | if (micromips_imm_b_map[imm] == ep.X_add_number) | |
12627 | break; | |
12628 | if (imm >= 8) | |
12629 | break; | |
12630 | ||
12631 | INSERT_OPERAND (1, IMMB, *ip, imm); | |
12632 | } | |
12633 | s = expr_end; | |
12634 | continue; | |
12635 | ||
12636 | case 'C': | |
12637 | { | |
12638 | bfd_reloc_code_real_type r[3]; | |
12639 | expressionS ep; | |
12640 | int imm; | |
12641 | ||
12642 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12643 | || ep.X_op != O_constant) | |
12644 | break; | |
12645 | ||
12646 | for (imm = 0; imm < 16; imm++) | |
12647 | if (micromips_imm_c_map[imm] == ep.X_add_number) | |
12648 | break; | |
12649 | if (imm >= 16) | |
12650 | break; | |
12651 | ||
12652 | INSERT_OPERAND (1, IMMC, *ip, imm); | |
12653 | } | |
12654 | s = expr_end; | |
12655 | continue; | |
12656 | ||
12657 | case 'D': /* pc relative offset */ | |
12658 | case 'E': /* pc relative offset */ | |
12659 | my_getExpression (&offset_expr, s); | |
12660 | if (offset_expr.X_op == O_register) | |
12661 | break; | |
12662 | ||
12663 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; | |
12664 | s = expr_end; | |
12665 | continue; | |
12666 | ||
12667 | case 'F': | |
12668 | { | |
12669 | bfd_reloc_code_real_type r[3]; | |
12670 | expressionS ep; | |
12671 | int imm; | |
12672 | ||
12673 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12674 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
12675 | break; | |
12676 | ||
12677 | imm = ep.X_add_number; | |
12678 | INSERT_OPERAND (1, IMMF, *ip, imm); | |
12679 | } | |
12680 | s = expr_end; | |
12681 | continue; | |
12682 | ||
12683 | case 'G': | |
12684 | { | |
12685 | bfd_reloc_code_real_type r[3]; | |
12686 | expressionS ep; | |
12687 | int imm; | |
12688 | ||
12689 | /* Check whether there is only a single bracketed | |
12690 | expression left. If so, it must be the base register | |
12691 | and the constant must be zero. */ | |
12692 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12693 | { | |
12694 | INSERT_OPERAND (1, IMMG, *ip, 0); | |
12695 | continue; | |
12696 | } | |
12697 | ||
12698 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12699 | || !expr_const_in_range (&ep, -1, 15, 0)) | |
12700 | break; | |
12701 | ||
12702 | imm = ep.X_add_number & 15; | |
12703 | INSERT_OPERAND (1, IMMG, *ip, imm); | |
12704 | } | |
12705 | s = expr_end; | |
12706 | continue; | |
12707 | ||
12708 | case 'H': | |
12709 | { | |
12710 | bfd_reloc_code_real_type r[3]; | |
12711 | expressionS ep; | |
12712 | int imm; | |
12713 | ||
12714 | /* Check whether there is only a single bracketed | |
12715 | expression left. If so, it must be the base register | |
12716 | and the constant must be zero. */ | |
12717 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12718 | { | |
12719 | INSERT_OPERAND (1, IMMH, *ip, 0); | |
12720 | continue; | |
12721 | } | |
12722 | ||
12723 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12724 | || !expr_const_in_range (&ep, 0, 16, 1)) | |
12725 | break; | |
12726 | ||
12727 | imm = ep.X_add_number >> 1; | |
12728 | INSERT_OPERAND (1, IMMH, *ip, imm); | |
12729 | } | |
12730 | s = expr_end; | |
12731 | continue; | |
12732 | ||
12733 | case 'I': | |
12734 | { | |
12735 | bfd_reloc_code_real_type r[3]; | |
12736 | expressionS ep; | |
12737 | int imm; | |
12738 | ||
12739 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12740 | || !expr_const_in_range (&ep, -1, 127, 0)) | |
12741 | break; | |
12742 | ||
12743 | imm = ep.X_add_number & 127; | |
12744 | INSERT_OPERAND (1, IMMI, *ip, imm); | |
12745 | } | |
12746 | s = expr_end; | |
12747 | continue; | |
12748 | ||
12749 | case 'J': | |
12750 | { | |
12751 | bfd_reloc_code_real_type r[3]; | |
12752 | expressionS ep; | |
12753 | int imm; | |
12754 | ||
12755 | /* Check whether there is only a single bracketed | |
12756 | expression left. If so, it must be the base register | |
12757 | and the constant must be zero. */ | |
12758 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12759 | { | |
12760 | INSERT_OPERAND (1, IMMJ, *ip, 0); | |
12761 | continue; | |
12762 | } | |
12763 | ||
12764 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12765 | || !expr_const_in_range (&ep, 0, 16, 2)) | |
12766 | break; | |
12767 | ||
12768 | imm = ep.X_add_number >> 2; | |
12769 | INSERT_OPERAND (1, IMMJ, *ip, imm); | |
12770 | } | |
12771 | s = expr_end; | |
12772 | continue; | |
12773 | ||
12774 | case 'L': | |
12775 | { | |
12776 | bfd_reloc_code_real_type r[3]; | |
12777 | expressionS ep; | |
12778 | int imm; | |
12779 | ||
12780 | /* Check whether there is only a single bracketed | |
12781 | expression left. If so, it must be the base register | |
12782 | and the constant must be zero. */ | |
12783 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12784 | { | |
12785 | INSERT_OPERAND (1, IMML, *ip, 0); | |
12786 | continue; | |
12787 | } | |
12788 | ||
12789 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12790 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
12791 | break; | |
12792 | ||
12793 | imm = ep.X_add_number; | |
12794 | INSERT_OPERAND (1, IMML, *ip, imm); | |
12795 | } | |
12796 | s = expr_end; | |
12797 | continue; | |
12798 | ||
12799 | case 'M': | |
12800 | { | |
12801 | bfd_reloc_code_real_type r[3]; | |
12802 | expressionS ep; | |
12803 | int imm; | |
12804 | ||
12805 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12806 | || !expr_const_in_range (&ep, 1, 9, 0)) | |
12807 | break; | |
12808 | ||
12809 | imm = ep.X_add_number & 7; | |
12810 | INSERT_OPERAND (1, IMMM, *ip, imm); | |
12811 | } | |
12812 | s = expr_end; | |
12813 | continue; | |
12814 | ||
12815 | case 'N': /* Register list for lwm and swm. */ | |
12816 | { | |
12817 | /* A comma-separated list of registers and/or | |
12818 | dash-separated contiguous ranges including | |
12819 | both ra and a set of one or more registers | |
12820 | starting at s0 up to s3 which have to be | |
12821 | consecutive, e.g.: | |
12822 | ||
12823 | s0, ra | |
12824 | s0, s1, ra, s2, s3 | |
12825 | s0-s2, ra | |
12826 | ||
12827 | and any permutations of these. */ | |
12828 | unsigned int reglist; | |
12829 | int imm; | |
12830 | ||
12831 | if (!reglist_lookup (&s, RTYPE_NUM | RTYPE_GP, ®list)) | |
12832 | break; | |
12833 | ||
12834 | if ((reglist & 0xfff1ffff) != 0x80010000) | |
12835 | break; | |
12836 | ||
12837 | reglist = (reglist >> 17) & 7; | |
12838 | reglist += 1; | |
12839 | if ((reglist & -reglist) != reglist) | |
12840 | break; | |
252b5132 | 12841 | |
df58fc94 RS |
12842 | imm = ffs (reglist) - 1; |
12843 | INSERT_OPERAND (1, IMMN, *ip, imm); | |
12844 | } | |
12845 | continue; | |
252b5132 | 12846 | |
df58fc94 RS |
12847 | case 'O': /* sdbbp 4-bit code. */ |
12848 | { | |
12849 | bfd_reloc_code_real_type r[3]; | |
12850 | expressionS ep; | |
12851 | int imm; | |
12852 | ||
12853 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12854 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
12855 | break; | |
12856 | ||
12857 | imm = ep.X_add_number; | |
12858 | INSERT_OPERAND (1, IMMO, *ip, imm); | |
252b5132 | 12859 | } |
df58fc94 RS |
12860 | s = expr_end; |
12861 | continue; | |
252b5132 | 12862 | |
df58fc94 RS |
12863 | case 'P': |
12864 | { | |
12865 | bfd_reloc_code_real_type r[3]; | |
12866 | expressionS ep; | |
12867 | int imm; | |
5e0116d5 | 12868 | |
df58fc94 RS |
12869 | if (my_getSmallExpression (&ep, r, s) > 0 |
12870 | || !expr_const_in_range (&ep, 0, 32, 2)) | |
12871 | break; | |
5e0116d5 | 12872 | |
df58fc94 RS |
12873 | imm = ep.X_add_number >> 2; |
12874 | INSERT_OPERAND (1, IMMP, *ip, imm); | |
12875 | } | |
12876 | s = expr_end; | |
12877 | continue; | |
5e0116d5 | 12878 | |
df58fc94 RS |
12879 | case 'Q': |
12880 | { | |
12881 | bfd_reloc_code_real_type r[3]; | |
12882 | expressionS ep; | |
12883 | int imm; | |
5e0116d5 | 12884 | |
df58fc94 RS |
12885 | if (my_getSmallExpression (&ep, r, s) > 0 |
12886 | || !expr_const_in_range (&ep, -0x400000, 0x400000, 2)) | |
12887 | break; | |
252b5132 | 12888 | |
df58fc94 RS |
12889 | imm = ep.X_add_number >> 2; |
12890 | INSERT_OPERAND (1, IMMQ, *ip, imm); | |
12891 | } | |
12892 | s = expr_end; | |
12893 | continue; | |
4614d845 | 12894 | |
df58fc94 RS |
12895 | case 'U': |
12896 | { | |
12897 | bfd_reloc_code_real_type r[3]; | |
12898 | expressionS ep; | |
12899 | int imm; | |
12900 | ||
12901 | /* Check whether there is only a single bracketed | |
12902 | expression left. If so, it must be the base register | |
12903 | and the constant must be zero. */ | |
12904 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12905 | { | |
12906 | INSERT_OPERAND (1, IMMU, *ip, 0); | |
12907 | continue; | |
12908 | } | |
12909 | ||
12910 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12911 | || !expr_const_in_range (&ep, 0, 32, 2)) | |
12912 | break; | |
12913 | ||
12914 | imm = ep.X_add_number >> 2; | |
12915 | INSERT_OPERAND (1, IMMU, *ip, imm); | |
12916 | } | |
12917 | s = expr_end; | |
5e0116d5 | 12918 | continue; |
252b5132 | 12919 | |
df58fc94 RS |
12920 | case 'W': |
12921 | { | |
12922 | bfd_reloc_code_real_type r[3]; | |
12923 | expressionS ep; | |
12924 | int imm; | |
252b5132 | 12925 | |
df58fc94 RS |
12926 | if (my_getSmallExpression (&ep, r, s) > 0 |
12927 | || !expr_const_in_range (&ep, 0, 64, 2)) | |
12928 | break; | |
252b5132 | 12929 | |
df58fc94 RS |
12930 | imm = ep.X_add_number >> 2; |
12931 | INSERT_OPERAND (1, IMMW, *ip, imm); | |
12932 | } | |
12933 | s = expr_end; | |
12934 | continue; | |
252b5132 | 12935 | |
df58fc94 RS |
12936 | case 'X': |
12937 | { | |
12938 | bfd_reloc_code_real_type r[3]; | |
12939 | expressionS ep; | |
12940 | int imm; | |
252b5132 | 12941 | |
df58fc94 RS |
12942 | if (my_getSmallExpression (&ep, r, s) > 0 |
12943 | || !expr_const_in_range (&ep, -8, 8, 0)) | |
12944 | break; | |
252b5132 | 12945 | |
df58fc94 RS |
12946 | imm = ep.X_add_number; |
12947 | INSERT_OPERAND (1, IMMX, *ip, imm); | |
12948 | } | |
12949 | s = expr_end; | |
12950 | continue; | |
252b5132 | 12951 | |
df58fc94 RS |
12952 | case 'Y': |
12953 | { | |
12954 | bfd_reloc_code_real_type r[3]; | |
12955 | expressionS ep; | |
12956 | int imm; | |
156c2f8b | 12957 | |
df58fc94 RS |
12958 | if (my_getSmallExpression (&ep, r, s) > 0 |
12959 | || expr_const_in_range (&ep, -2, 2, 2) | |
12960 | || !expr_const_in_range (&ep, -258, 258, 2)) | |
12961 | break; | |
156c2f8b | 12962 | |
df58fc94 RS |
12963 | imm = ep.X_add_number >> 2; |
12964 | imm = ((imm >> 1) & ~0xff) | (imm & 0xff); | |
12965 | INSERT_OPERAND (1, IMMY, *ip, imm); | |
12966 | } | |
12967 | s = expr_end; | |
12968 | continue; | |
60b63b72 | 12969 | |
df58fc94 RS |
12970 | case 'Z': |
12971 | { | |
12972 | bfd_reloc_code_real_type r[3]; | |
12973 | expressionS ep; | |
12974 | ||
12975 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12976 | || !expr_const_in_range (&ep, 0, 1, 0)) | |
12977 | break; | |
12978 | } | |
12979 | s = expr_end; | |
12980 | continue; | |
12981 | ||
12982 | default: | |
12983 | as_bad (_("Internal error: bad microMIPS opcode " | |
12984 | "(unknown extension operand type `m%c'): %s %s"), | |
12985 | *args, insn->name, insn->args); | |
12986 | /* Further processing is fruitless. */ | |
12987 | return; | |
60b63b72 | 12988 | } |
df58fc94 | 12989 | break; |
60b63b72 | 12990 | |
df58fc94 RS |
12991 | case 'n': /* Register list for 32-bit lwm and swm. */ |
12992 | gas_assert (mips_opts.micromips); | |
12993 | { | |
12994 | /* A comma-separated list of registers and/or | |
12995 | dash-separated contiguous ranges including | |
12996 | at least one of ra and a set of one or more | |
12997 | registers starting at s0 up to s7 and then | |
12998 | s8 which have to be consecutive, e.g.: | |
12999 | ||
13000 | ra | |
13001 | s0 | |
13002 | ra, s0, s1, s2 | |
13003 | s0-s8 | |
13004 | s0-s5, ra | |
13005 | ||
13006 | and any permutations of these. */ | |
13007 | unsigned int reglist; | |
13008 | int imm; | |
13009 | int ra; | |
13010 | ||
13011 | if (!reglist_lookup (&s, RTYPE_NUM | RTYPE_GP, ®list)) | |
13012 | break; | |
13013 | ||
13014 | if ((reglist & 0x3f00ffff) != 0) | |
13015 | break; | |
13016 | ||
13017 | ra = (reglist >> 27) & 0x10; | |
13018 | reglist = ((reglist >> 22) & 0x100) | ((reglist >> 16) & 0xff); | |
13019 | reglist += 1; | |
13020 | if ((reglist & -reglist) != reglist) | |
13021 | break; | |
13022 | ||
13023 | imm = (ffs (reglist) - 1) | ra; | |
13024 | INSERT_OPERAND (1, RT, *ip, imm); | |
13025 | imm_expr.X_op = O_absent; | |
13026 | } | |
60b63b72 RS |
13027 | continue; |
13028 | ||
df58fc94 RS |
13029 | case '|': /* 4-bit trap code. */ |
13030 | gas_assert (mips_opts.micromips); | |
60b63b72 RS |
13031 | my_getExpression (&imm_expr, s); |
13032 | check_absolute_expr (ip, &imm_expr); | |
60b63b72 | 13033 | if ((unsigned long) imm_expr.X_add_number |
df58fc94 RS |
13034 | > MICROMIPSOP_MASK_TRAP) |
13035 | as_bad (_("Trap code (%lu) for %s not in 0..15 range"), | |
13036 | (unsigned long) imm_expr.X_add_number, | |
13037 | ip->insn_mo->name); | |
13038 | INSERT_OPERAND (1, TRAP, *ip, imm_expr.X_add_number); | |
60b63b72 RS |
13039 | imm_expr.X_op = O_absent; |
13040 | s = expr_end; | |
13041 | continue; | |
13042 | ||
252b5132 | 13043 | default: |
f71d0d44 | 13044 | as_bad (_("Bad char = '%c'\n"), *args); |
252b5132 RH |
13045 | internalError (); |
13046 | } | |
13047 | break; | |
13048 | } | |
13049 | /* Args don't match. */ | |
df58fc94 RS |
13050 | s = argsStart; |
13051 | insn_error = _("Illegal operands"); | |
13052 | if (insn + 1 < past && !strcmp (insn->name, insn[1].name)) | |
252b5132 RH |
13053 | { |
13054 | ++insn; | |
252b5132 RH |
13055 | continue; |
13056 | } | |
df58fc94 RS |
13057 | else if (wrong_delay_slot_insns && need_delay_slot_ok) |
13058 | { | |
13059 | gas_assert (firstinsn); | |
13060 | need_delay_slot_ok = FALSE; | |
13061 | past = insn + 1; | |
13062 | insn = firstinsn; | |
13063 | continue; | |
13064 | } | |
252b5132 RH |
13065 | return; |
13066 | } | |
13067 | } | |
13068 | ||
0499d65b TS |
13069 | #define SKIP_SPACE_TABS(S) { while (*(S) == ' ' || *(S) == '\t') ++(S); } |
13070 | ||
252b5132 RH |
13071 | /* This routine assembles an instruction into its binary format when |
13072 | assembling for the mips16. As a side effect, it sets one of the | |
df58fc94 RS |
13073 | global variables imm_reloc or offset_reloc to the type of relocation |
13074 | to do if one of the operands is an address expression. It also sets | |
13075 | forced_insn_length to the resulting instruction size in bytes if the | |
13076 | user explicitly requested a small or extended instruction. */ | |
252b5132 RH |
13077 | |
13078 | static void | |
17a2f251 | 13079 | mips16_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
13080 | { |
13081 | char *s; | |
13082 | const char *args; | |
13083 | struct mips_opcode *insn; | |
13084 | char *argsstart; | |
13085 | unsigned int regno; | |
13086 | unsigned int lastregno = 0; | |
13087 | char *s_reset; | |
d6f16593 | 13088 | size_t i; |
252b5132 RH |
13089 | |
13090 | insn_error = NULL; | |
13091 | ||
df58fc94 | 13092 | forced_insn_length = 0; |
252b5132 | 13093 | |
3882b010 | 13094 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
13095 | ; |
13096 | switch (*s) | |
13097 | { | |
13098 | case '\0': | |
13099 | break; | |
13100 | ||
13101 | case ' ': | |
13102 | *s++ = '\0'; | |
13103 | break; | |
13104 | ||
13105 | case '.': | |
13106 | if (s[1] == 't' && s[2] == ' ') | |
13107 | { | |
13108 | *s = '\0'; | |
df58fc94 | 13109 | forced_insn_length = 2; |
252b5132 RH |
13110 | s += 3; |
13111 | break; | |
13112 | } | |
13113 | else if (s[1] == 'e' && s[2] == ' ') | |
13114 | { | |
13115 | *s = '\0'; | |
df58fc94 | 13116 | forced_insn_length = 4; |
252b5132 RH |
13117 | s += 3; |
13118 | break; | |
13119 | } | |
13120 | /* Fall through. */ | |
13121 | default: | |
13122 | insn_error = _("unknown opcode"); | |
13123 | return; | |
13124 | } | |
13125 | ||
df58fc94 RS |
13126 | if (mips_opts.noautoextend && !forced_insn_length) |
13127 | forced_insn_length = 2; | |
252b5132 RH |
13128 | |
13129 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
13130 | { | |
13131 | insn_error = _("unrecognized opcode"); | |
13132 | return; | |
13133 | } | |
13134 | ||
13135 | argsstart = s; | |
13136 | for (;;) | |
13137 | { | |
9b3f89ee TS |
13138 | bfd_boolean ok; |
13139 | ||
9c2799c2 | 13140 | gas_assert (strcmp (insn->name, str) == 0); |
252b5132 | 13141 | |
037b32b9 | 13142 | ok = is_opcode_valid_16 (insn); |
9b3f89ee TS |
13143 | if (! ok) |
13144 | { | |
13145 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] | |
13146 | && strcmp (insn->name, insn[1].name) == 0) | |
13147 | { | |
13148 | ++insn; | |
13149 | continue; | |
13150 | } | |
13151 | else | |
13152 | { | |
13153 | if (!insn_error) | |
13154 | { | |
13155 | static char buf[100]; | |
13156 | sprintf (buf, | |
13157 | _("opcode not supported on this processor: %s (%s)"), | |
13158 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
13159 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
13160 | insn_error = buf; | |
13161 | } | |
13162 | return; | |
13163 | } | |
13164 | } | |
13165 | ||
1e915849 | 13166 | create_insn (ip, insn); |
252b5132 | 13167 | imm_expr.X_op = O_absent; |
f6688943 TS |
13168 | imm_reloc[0] = BFD_RELOC_UNUSED; |
13169 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
13170 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
5f74bc13 | 13171 | imm2_expr.X_op = O_absent; |
252b5132 | 13172 | offset_expr.X_op = O_absent; |
f6688943 TS |
13173 | offset_reloc[0] = BFD_RELOC_UNUSED; |
13174 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
13175 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
13176 | for (args = insn->args; 1; ++args) |
13177 | { | |
13178 | int c; | |
13179 | ||
13180 | if (*s == ' ') | |
13181 | ++s; | |
13182 | ||
13183 | /* In this switch statement we call break if we did not find | |
13184 | a match, continue if we did find a match, or return if we | |
13185 | are done. */ | |
13186 | ||
13187 | c = *args; | |
13188 | switch (c) | |
13189 | { | |
13190 | case '\0': | |
13191 | if (*s == '\0') | |
13192 | { | |
13193 | /* Stuff the immediate value in now, if we can. */ | |
13194 | if (imm_expr.X_op == O_constant | |
f6688943 | 13195 | && *imm_reloc > BFD_RELOC_UNUSED |
738e5348 RS |
13196 | && *imm_reloc != BFD_RELOC_MIPS16_GOT16 |
13197 | && *imm_reloc != BFD_RELOC_MIPS16_CALL16 | |
252b5132 RH |
13198 | && insn->pinfo != INSN_MACRO) |
13199 | { | |
d6f16593 MR |
13200 | valueT tmp; |
13201 | ||
13202 | switch (*offset_reloc) | |
13203 | { | |
13204 | case BFD_RELOC_MIPS16_HI16_S: | |
13205 | tmp = (imm_expr.X_add_number + 0x8000) >> 16; | |
13206 | break; | |
13207 | ||
13208 | case BFD_RELOC_MIPS16_HI16: | |
13209 | tmp = imm_expr.X_add_number >> 16; | |
13210 | break; | |
13211 | ||
13212 | case BFD_RELOC_MIPS16_LO16: | |
13213 | tmp = ((imm_expr.X_add_number + 0x8000) & 0xffff) | |
13214 | - 0x8000; | |
13215 | break; | |
13216 | ||
13217 | case BFD_RELOC_UNUSED: | |
13218 | tmp = imm_expr.X_add_number; | |
13219 | break; | |
13220 | ||
13221 | default: | |
13222 | internalError (); | |
13223 | } | |
13224 | *offset_reloc = BFD_RELOC_UNUSED; | |
13225 | ||
c4e7957c | 13226 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
df58fc94 RS |
13227 | tmp, TRUE, forced_insn_length == 2, |
13228 | forced_insn_length == 4, &ip->insn_opcode, | |
252b5132 RH |
13229 | &ip->use_extend, &ip->extend); |
13230 | imm_expr.X_op = O_absent; | |
f6688943 | 13231 | *imm_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
13232 | } |
13233 | ||
13234 | return; | |
13235 | } | |
13236 | break; | |
13237 | ||
13238 | case ',': | |
13239 | if (*s++ == c) | |
13240 | continue; | |
13241 | s--; | |
13242 | switch (*++args) | |
13243 | { | |
13244 | case 'v': | |
bf12938e | 13245 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 RH |
13246 | continue; |
13247 | case 'w': | |
bf12938e | 13248 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
13249 | continue; |
13250 | } | |
13251 | break; | |
13252 | ||
13253 | case '(': | |
13254 | case ')': | |
13255 | if (*s++ == c) | |
13256 | continue; | |
13257 | break; | |
13258 | ||
13259 | case 'v': | |
13260 | case 'w': | |
13261 | if (s[0] != '$') | |
13262 | { | |
13263 | if (c == 'v') | |
bf12938e | 13264 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 | 13265 | else |
bf12938e | 13266 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
13267 | ++args; |
13268 | continue; | |
13269 | } | |
13270 | /* Fall through. */ | |
13271 | case 'x': | |
13272 | case 'y': | |
13273 | case 'z': | |
13274 | case 'Z': | |
13275 | case '0': | |
13276 | case 'S': | |
13277 | case 'R': | |
13278 | case 'X': | |
13279 | case 'Y': | |
707bfff6 TS |
13280 | s_reset = s; |
13281 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) | |
252b5132 | 13282 | { |
707bfff6 | 13283 | if (c == 'v' || c == 'w') |
85b51719 | 13284 | { |
707bfff6 | 13285 | if (c == 'v') |
a9e24354 | 13286 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
707bfff6 | 13287 | else |
a9e24354 | 13288 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
707bfff6 TS |
13289 | ++args; |
13290 | continue; | |
85b51719 | 13291 | } |
707bfff6 | 13292 | break; |
252b5132 RH |
13293 | } |
13294 | ||
13295 | if (*s == ' ') | |
13296 | ++s; | |
13297 | if (args[1] != *s) | |
13298 | { | |
13299 | if (c == 'v' || c == 'w') | |
13300 | { | |
13301 | regno = mips16_to_32_reg_map[lastregno]; | |
13302 | s = s_reset; | |
f9419b05 | 13303 | ++args; |
252b5132 RH |
13304 | } |
13305 | } | |
13306 | ||
13307 | switch (c) | |
13308 | { | |
13309 | case 'x': | |
13310 | case 'y': | |
13311 | case 'z': | |
13312 | case 'v': | |
13313 | case 'w': | |
13314 | case 'Z': | |
13315 | regno = mips32_to_16_reg_map[regno]; | |
13316 | break; | |
13317 | ||
13318 | case '0': | |
13319 | if (regno != 0) | |
13320 | regno = ILLEGAL_REG; | |
13321 | break; | |
13322 | ||
13323 | case 'S': | |
13324 | if (regno != SP) | |
13325 | regno = ILLEGAL_REG; | |
13326 | break; | |
13327 | ||
13328 | case 'R': | |
13329 | if (regno != RA) | |
13330 | regno = ILLEGAL_REG; | |
13331 | break; | |
13332 | ||
13333 | case 'X': | |
13334 | case 'Y': | |
741fe287 MR |
13335 | if (regno == AT && mips_opts.at) |
13336 | { | |
13337 | if (mips_opts.at == ATREG) | |
13338 | as_warn (_("used $at without \".set noat\"")); | |
13339 | else | |
13340 | as_warn (_("used $%u with \".set at=$%u\""), | |
13341 | regno, mips_opts.at); | |
13342 | } | |
252b5132 RH |
13343 | break; |
13344 | ||
13345 | default: | |
13346 | internalError (); | |
13347 | } | |
13348 | ||
13349 | if (regno == ILLEGAL_REG) | |
13350 | break; | |
13351 | ||
13352 | switch (c) | |
13353 | { | |
13354 | case 'x': | |
13355 | case 'v': | |
bf12938e | 13356 | MIPS16_INSERT_OPERAND (RX, *ip, regno); |
252b5132 RH |
13357 | break; |
13358 | case 'y': | |
13359 | case 'w': | |
bf12938e | 13360 | MIPS16_INSERT_OPERAND (RY, *ip, regno); |
252b5132 RH |
13361 | break; |
13362 | case 'z': | |
bf12938e | 13363 | MIPS16_INSERT_OPERAND (RZ, *ip, regno); |
252b5132 RH |
13364 | break; |
13365 | case 'Z': | |
bf12938e | 13366 | MIPS16_INSERT_OPERAND (MOVE32Z, *ip, regno); |
252b5132 RH |
13367 | case '0': |
13368 | case 'S': | |
13369 | case 'R': | |
13370 | break; | |
13371 | case 'X': | |
bf12938e | 13372 | MIPS16_INSERT_OPERAND (REGR32, *ip, regno); |
252b5132 RH |
13373 | break; |
13374 | case 'Y': | |
13375 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
bf12938e | 13376 | MIPS16_INSERT_OPERAND (REG32R, *ip, regno); |
252b5132 RH |
13377 | break; |
13378 | default: | |
13379 | internalError (); | |
13380 | } | |
13381 | ||
13382 | lastregno = regno; | |
13383 | continue; | |
13384 | ||
13385 | case 'P': | |
13386 | if (strncmp (s, "$pc", 3) == 0) | |
13387 | { | |
13388 | s += 3; | |
13389 | continue; | |
13390 | } | |
13391 | break; | |
13392 | ||
252b5132 RH |
13393 | case '5': |
13394 | case 'H': | |
13395 | case 'W': | |
13396 | case 'D': | |
13397 | case 'j': | |
252b5132 RH |
13398 | case 'V': |
13399 | case 'C': | |
13400 | case 'U': | |
13401 | case 'k': | |
13402 | case 'K': | |
d6f16593 MR |
13403 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); |
13404 | if (i > 0) | |
252b5132 | 13405 | { |
d6f16593 | 13406 | if (imm_expr.X_op != O_constant) |
252b5132 | 13407 | { |
df58fc94 | 13408 | forced_insn_length = 4; |
b34976b6 | 13409 | ip->use_extend = TRUE; |
252b5132 | 13410 | ip->extend = 0; |
252b5132 | 13411 | } |
d6f16593 MR |
13412 | else |
13413 | { | |
13414 | /* We need to relax this instruction. */ | |
13415 | *offset_reloc = *imm_reloc; | |
13416 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; | |
13417 | } | |
13418 | s = expr_end; | |
13419 | continue; | |
252b5132 | 13420 | } |
d6f16593 MR |
13421 | *imm_reloc = BFD_RELOC_UNUSED; |
13422 | /* Fall through. */ | |
13423 | case '<': | |
13424 | case '>': | |
13425 | case '[': | |
13426 | case ']': | |
13427 | case '4': | |
13428 | case '8': | |
13429 | my_getExpression (&imm_expr, s); | |
252b5132 RH |
13430 | if (imm_expr.X_op == O_register) |
13431 | { | |
13432 | /* What we thought was an expression turned out to | |
13433 | be a register. */ | |
13434 | ||
13435 | if (s[0] == '(' && args[1] == '(') | |
13436 | { | |
13437 | /* It looks like the expression was omitted | |
13438 | before a register indirection, which means | |
13439 | that the expression is implicitly zero. We | |
13440 | still set up imm_expr, so that we handle | |
13441 | explicit extensions correctly. */ | |
13442 | imm_expr.X_op = O_constant; | |
13443 | imm_expr.X_add_number = 0; | |
f6688943 | 13444 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13445 | continue; |
13446 | } | |
13447 | ||
13448 | break; | |
13449 | } | |
13450 | ||
13451 | /* We need to relax this instruction. */ | |
f6688943 | 13452 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13453 | s = expr_end; |
13454 | continue; | |
13455 | ||
13456 | case 'p': | |
13457 | case 'q': | |
13458 | case 'A': | |
13459 | case 'B': | |
13460 | case 'E': | |
13461 | /* We use offset_reloc rather than imm_reloc for the PC | |
13462 | relative operands. This lets macros with both | |
13463 | immediate and address operands work correctly. */ | |
13464 | my_getExpression (&offset_expr, s); | |
13465 | ||
13466 | if (offset_expr.X_op == O_register) | |
13467 | break; | |
13468 | ||
13469 | /* We need to relax this instruction. */ | |
f6688943 | 13470 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13471 | s = expr_end; |
13472 | continue; | |
13473 | ||
13474 | case '6': /* break code */ | |
13475 | my_getExpression (&imm_expr, s); | |
13476 | check_absolute_expr (ip, &imm_expr); | |
13477 | if ((unsigned long) imm_expr.X_add_number > 63) | |
bf12938e RS |
13478 | as_warn (_("Invalid value for `%s' (%lu)"), |
13479 | ip->insn_mo->name, | |
13480 | (unsigned long) imm_expr.X_add_number); | |
13481 | MIPS16_INSERT_OPERAND (IMM6, *ip, imm_expr.X_add_number); | |
252b5132 RH |
13482 | imm_expr.X_op = O_absent; |
13483 | s = expr_end; | |
13484 | continue; | |
13485 | ||
13486 | case 'a': /* 26 bit address */ | |
13487 | my_getExpression (&offset_expr, s); | |
13488 | s = expr_end; | |
f6688943 | 13489 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
13490 | ip->insn_opcode <<= 16; |
13491 | continue; | |
13492 | ||
13493 | case 'l': /* register list for entry macro */ | |
13494 | case 'L': /* register list for exit macro */ | |
13495 | { | |
13496 | int mask; | |
13497 | ||
13498 | if (c == 'l') | |
13499 | mask = 0; | |
13500 | else | |
13501 | mask = 7 << 3; | |
13502 | while (*s != '\0') | |
13503 | { | |
707bfff6 | 13504 | unsigned int freg, reg1, reg2; |
252b5132 RH |
13505 | |
13506 | while (*s == ' ' || *s == ',') | |
13507 | ++s; | |
707bfff6 | 13508 | if (reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
252b5132 | 13509 | freg = 0; |
707bfff6 TS |
13510 | else if (reg_lookup (&s, RTYPE_FPU, ®1)) |
13511 | freg = 1; | |
252b5132 RH |
13512 | else |
13513 | { | |
707bfff6 TS |
13514 | as_bad (_("can't parse register list")); |
13515 | break; | |
252b5132 RH |
13516 | } |
13517 | if (*s == ' ') | |
13518 | ++s; | |
13519 | if (*s != '-') | |
13520 | reg2 = reg1; | |
13521 | else | |
13522 | { | |
13523 | ++s; | |
707bfff6 TS |
13524 | if (!reg_lookup (&s, freg ? RTYPE_FPU |
13525 | : (RTYPE_GP | RTYPE_NUM), ®2)) | |
252b5132 | 13526 | { |
707bfff6 TS |
13527 | as_bad (_("invalid register list")); |
13528 | break; | |
252b5132 RH |
13529 | } |
13530 | } | |
13531 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
13532 | { | |
13533 | mask &= ~ (7 << 3); | |
13534 | mask |= 5 << 3; | |
13535 | } | |
13536 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
13537 | { | |
13538 | mask &= ~ (7 << 3); | |
13539 | mask |= 6 << 3; | |
13540 | } | |
13541 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
13542 | mask |= (reg2 - 3) << 3; | |
13543 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
13544 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 13545 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
13546 | mask |= 1; |
13547 | else | |
13548 | { | |
13549 | as_bad (_("invalid register list")); | |
13550 | break; | |
13551 | } | |
13552 | } | |
13553 | /* The mask is filled in in the opcode table for the | |
13554 | benefit of the disassembler. We remove it before | |
13555 | applying the actual mask. */ | |
13556 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
13557 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
13558 | } | |
13559 | continue; | |
13560 | ||
0499d65b TS |
13561 | case 'm': /* Register list for save insn. */ |
13562 | case 'M': /* Register list for restore insn. */ | |
13563 | { | |
13564 | int opcode = 0; | |
13565 | int framesz = 0, seen_framesz = 0; | |
91d6fa6a | 13566 | int nargs = 0, statics = 0, sregs = 0; |
0499d65b TS |
13567 | |
13568 | while (*s != '\0') | |
13569 | { | |
13570 | unsigned int reg1, reg2; | |
13571 | ||
13572 | SKIP_SPACE_TABS (s); | |
13573 | while (*s == ',') | |
13574 | ++s; | |
13575 | SKIP_SPACE_TABS (s); | |
13576 | ||
13577 | my_getExpression (&imm_expr, s); | |
13578 | if (imm_expr.X_op == O_constant) | |
13579 | { | |
13580 | /* Handle the frame size. */ | |
13581 | if (seen_framesz) | |
13582 | { | |
13583 | as_bad (_("more than one frame size in list")); | |
13584 | break; | |
13585 | } | |
13586 | seen_framesz = 1; | |
13587 | framesz = imm_expr.X_add_number; | |
13588 | imm_expr.X_op = O_absent; | |
13589 | s = expr_end; | |
13590 | continue; | |
13591 | } | |
13592 | ||
707bfff6 | 13593 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
0499d65b TS |
13594 | { |
13595 | as_bad (_("can't parse register list")); | |
13596 | break; | |
13597 | } | |
0499d65b | 13598 | |
707bfff6 TS |
13599 | while (*s == ' ') |
13600 | ++s; | |
13601 | ||
0499d65b TS |
13602 | if (*s != '-') |
13603 | reg2 = reg1; | |
13604 | else | |
13605 | { | |
13606 | ++s; | |
707bfff6 TS |
13607 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®2) |
13608 | || reg2 < reg1) | |
0499d65b TS |
13609 | { |
13610 | as_bad (_("can't parse register list")); | |
13611 | break; | |
13612 | } | |
0499d65b TS |
13613 | } |
13614 | ||
13615 | while (reg1 <= reg2) | |
13616 | { | |
13617 | if (reg1 >= 4 && reg1 <= 7) | |
13618 | { | |
3a93f742 | 13619 | if (!seen_framesz) |
0499d65b | 13620 | /* args $a0-$a3 */ |
91d6fa6a | 13621 | nargs |= 1 << (reg1 - 4); |
0499d65b TS |
13622 | else |
13623 | /* statics $a0-$a3 */ | |
13624 | statics |= 1 << (reg1 - 4); | |
13625 | } | |
13626 | else if ((reg1 >= 16 && reg1 <= 23) || reg1 == 30) | |
13627 | { | |
13628 | /* $s0-$s8 */ | |
13629 | sregs |= 1 << ((reg1 == 30) ? 8 : (reg1 - 16)); | |
13630 | } | |
13631 | else if (reg1 == 31) | |
13632 | { | |
13633 | /* Add $ra to insn. */ | |
13634 | opcode |= 0x40; | |
13635 | } | |
13636 | else | |
13637 | { | |
13638 | as_bad (_("unexpected register in list")); | |
13639 | break; | |
13640 | } | |
13641 | if (++reg1 == 24) | |
13642 | reg1 = 30; | |
13643 | } | |
13644 | } | |
13645 | ||
13646 | /* Encode args/statics combination. */ | |
91d6fa6a | 13647 | if (nargs & statics) |
0499d65b | 13648 | as_bad (_("arg/static registers overlap")); |
91d6fa6a | 13649 | else if (nargs == 0xf) |
0499d65b TS |
13650 | /* All $a0-$a3 are args. */ |
13651 | opcode |= MIPS16_ALL_ARGS << 16; | |
13652 | else if (statics == 0xf) | |
13653 | /* All $a0-$a3 are statics. */ | |
13654 | opcode |= MIPS16_ALL_STATICS << 16; | |
13655 | else | |
13656 | { | |
13657 | int narg = 0, nstat = 0; | |
13658 | ||
13659 | /* Count arg registers. */ | |
91d6fa6a | 13660 | while (nargs & 0x1) |
0499d65b | 13661 | { |
91d6fa6a | 13662 | nargs >>= 1; |
0499d65b TS |
13663 | narg++; |
13664 | } | |
91d6fa6a | 13665 | if (nargs != 0) |
0499d65b TS |
13666 | as_bad (_("invalid arg register list")); |
13667 | ||
13668 | /* Count static registers. */ | |
13669 | while (statics & 0x8) | |
13670 | { | |
13671 | statics = (statics << 1) & 0xf; | |
13672 | nstat++; | |
13673 | } | |
13674 | if (statics != 0) | |
13675 | as_bad (_("invalid static register list")); | |
13676 | ||
13677 | /* Encode args/statics. */ | |
13678 | opcode |= ((narg << 2) | nstat) << 16; | |
13679 | } | |
13680 | ||
13681 | /* Encode $s0/$s1. */ | |
13682 | if (sregs & (1 << 0)) /* $s0 */ | |
13683 | opcode |= 0x20; | |
13684 | if (sregs & (1 << 1)) /* $s1 */ | |
13685 | opcode |= 0x10; | |
13686 | sregs >>= 2; | |
13687 | ||
13688 | if (sregs != 0) | |
13689 | { | |
13690 | /* Count regs $s2-$s8. */ | |
13691 | int nsreg = 0; | |
13692 | while (sregs & 1) | |
13693 | { | |
13694 | sregs >>= 1; | |
13695 | nsreg++; | |
13696 | } | |
13697 | if (sregs != 0) | |
13698 | as_bad (_("invalid static register list")); | |
13699 | /* Encode $s2-$s8. */ | |
13700 | opcode |= nsreg << 24; | |
13701 | } | |
13702 | ||
13703 | /* Encode frame size. */ | |
13704 | if (!seen_framesz) | |
13705 | as_bad (_("missing frame size")); | |
13706 | else if ((framesz & 7) != 0 || framesz < 0 | |
13707 | || framesz > 0xff * 8) | |
13708 | as_bad (_("invalid frame size")); | |
13709 | else if (framesz != 128 || (opcode >> 16) != 0) | |
13710 | { | |
13711 | framesz /= 8; | |
13712 | opcode |= (((framesz & 0xf0) << 16) | |
13713 | | (framesz & 0x0f)); | |
13714 | } | |
13715 | ||
13716 | /* Finally build the instruction. */ | |
13717 | if ((opcode >> 16) != 0 || framesz == 0) | |
13718 | { | |
13719 | ip->use_extend = TRUE; | |
13720 | ip->extend = opcode >> 16; | |
13721 | } | |
13722 | ip->insn_opcode |= opcode & 0x7f; | |
13723 | } | |
13724 | continue; | |
13725 | ||
252b5132 RH |
13726 | case 'e': /* extend code */ |
13727 | my_getExpression (&imm_expr, s); | |
13728 | check_absolute_expr (ip, &imm_expr); | |
13729 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
13730 | { | |
13731 | as_warn (_("Invalid value for `%s' (%lu)"), | |
13732 | ip->insn_mo->name, | |
13733 | (unsigned long) imm_expr.X_add_number); | |
13734 | imm_expr.X_add_number &= 0x7ff; | |
13735 | } | |
13736 | ip->insn_opcode |= imm_expr.X_add_number; | |
13737 | imm_expr.X_op = O_absent; | |
13738 | s = expr_end; | |
13739 | continue; | |
13740 | ||
13741 | default: | |
13742 | internalError (); | |
13743 | } | |
13744 | break; | |
13745 | } | |
13746 | ||
13747 | /* Args don't match. */ | |
13748 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
13749 | strcmp (insn->name, insn[1].name) == 0) | |
13750 | { | |
13751 | ++insn; | |
13752 | s = argsstart; | |
13753 | continue; | |
13754 | } | |
13755 | ||
13756 | insn_error = _("illegal operands"); | |
13757 | ||
13758 | return; | |
13759 | } | |
13760 | } | |
13761 | ||
13762 | /* This structure holds information we know about a mips16 immediate | |
13763 | argument type. */ | |
13764 | ||
e972090a NC |
13765 | struct mips16_immed_operand |
13766 | { | |
252b5132 RH |
13767 | /* The type code used in the argument string in the opcode table. */ |
13768 | int type; | |
13769 | /* The number of bits in the short form of the opcode. */ | |
13770 | int nbits; | |
13771 | /* The number of bits in the extended form of the opcode. */ | |
13772 | int extbits; | |
13773 | /* The amount by which the short form is shifted when it is used; | |
13774 | for example, the sw instruction has a shift count of 2. */ | |
13775 | int shift; | |
13776 | /* The amount by which the short form is shifted when it is stored | |
13777 | into the instruction code. */ | |
13778 | int op_shift; | |
13779 | /* Non-zero if the short form is unsigned. */ | |
13780 | int unsp; | |
13781 | /* Non-zero if the extended form is unsigned. */ | |
13782 | int extu; | |
13783 | /* Non-zero if the value is PC relative. */ | |
13784 | int pcrel; | |
13785 | }; | |
13786 | ||
13787 | /* The mips16 immediate operand types. */ | |
13788 | ||
13789 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
13790 | { | |
13791 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
13792 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
13793 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
13794 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
13795 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
13796 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13797 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13798 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13799 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13800 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
13801 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
13802 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
13803 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
13804 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
13805 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
13806 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
13807 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
13808 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
13809 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
13810 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
13811 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
13812 | }; | |
13813 | ||
13814 | #define MIPS16_NUM_IMMED \ | |
13815 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
13816 | ||
13817 | /* Handle a mips16 instruction with an immediate value. This or's the | |
13818 | small immediate value into *INSN. It sets *USE_EXTEND to indicate | |
13819 | whether an extended value is needed; if one is needed, it sets | |
13820 | *EXTEND to the value. The argument type is TYPE. The value is VAL. | |
13821 | If SMALL is true, an unextended opcode was explicitly requested. | |
13822 | If EXT is true, an extended opcode was explicitly requested. If | |
13823 | WARN is true, warn if EXT does not match reality. */ | |
13824 | ||
13825 | static void | |
17a2f251 TS |
13826 | mips16_immed (char *file, unsigned int line, int type, offsetT val, |
13827 | bfd_boolean warn, bfd_boolean small, bfd_boolean ext, | |
13828 | unsigned long *insn, bfd_boolean *use_extend, | |
13829 | unsigned short *extend) | |
252b5132 | 13830 | { |
3994f87e | 13831 | const struct mips16_immed_operand *op; |
252b5132 | 13832 | int mintiny, maxtiny; |
b34976b6 | 13833 | bfd_boolean needext; |
252b5132 RH |
13834 | |
13835 | op = mips16_immed_operands; | |
13836 | while (op->type != type) | |
13837 | { | |
13838 | ++op; | |
9c2799c2 | 13839 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
13840 | } |
13841 | ||
13842 | if (op->unsp) | |
13843 | { | |
13844 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
13845 | { | |
13846 | mintiny = 1; | |
13847 | maxtiny = 1 << op->nbits; | |
13848 | } | |
13849 | else | |
13850 | { | |
13851 | mintiny = 0; | |
13852 | maxtiny = (1 << op->nbits) - 1; | |
13853 | } | |
13854 | } | |
13855 | else | |
13856 | { | |
13857 | mintiny = - (1 << (op->nbits - 1)); | |
13858 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
13859 | } | |
13860 | ||
13861 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
13862 | if (type == 'p' || type == 'q') | |
13863 | val /= 2; | |
13864 | ||
13865 | if ((val & ((1 << op->shift) - 1)) != 0 | |
13866 | || val < (mintiny << op->shift) | |
13867 | || val > (maxtiny << op->shift)) | |
b34976b6 | 13868 | needext = TRUE; |
252b5132 | 13869 | else |
b34976b6 | 13870 | needext = FALSE; |
252b5132 RH |
13871 | |
13872 | if (warn && ext && ! needext) | |
beae10d5 KH |
13873 | as_warn_where (file, line, |
13874 | _("extended operand requested but not required")); | |
252b5132 RH |
13875 | if (small && needext) |
13876 | as_bad_where (file, line, _("invalid unextended operand value")); | |
13877 | ||
13878 | if (small || (! ext && ! needext)) | |
13879 | { | |
13880 | int insnval; | |
13881 | ||
b34976b6 | 13882 | *use_extend = FALSE; |
252b5132 RH |
13883 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); |
13884 | insnval <<= op->op_shift; | |
13885 | *insn |= insnval; | |
13886 | } | |
13887 | else | |
13888 | { | |
13889 | long minext, maxext; | |
13890 | int extval; | |
13891 | ||
13892 | if (op->extu) | |
13893 | { | |
13894 | minext = 0; | |
13895 | maxext = (1 << op->extbits) - 1; | |
13896 | } | |
13897 | else | |
13898 | { | |
13899 | minext = - (1 << (op->extbits - 1)); | |
13900 | maxext = (1 << (op->extbits - 1)) - 1; | |
13901 | } | |
13902 | if (val < minext || val > maxext) | |
13903 | as_bad_where (file, line, | |
13904 | _("operand value out of range for instruction")); | |
13905 | ||
b34976b6 | 13906 | *use_extend = TRUE; |
252b5132 RH |
13907 | if (op->extbits == 16) |
13908 | { | |
13909 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
13910 | val &= 0x1f; | |
13911 | } | |
13912 | else if (op->extbits == 15) | |
13913 | { | |
13914 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
13915 | val &= 0xf; | |
13916 | } | |
13917 | else | |
13918 | { | |
13919 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
13920 | val = 0; | |
13921 | } | |
13922 | ||
13923 | *extend = (unsigned short) extval; | |
13924 | *insn |= val; | |
13925 | } | |
13926 | } | |
13927 | \f | |
d6f16593 | 13928 | struct percent_op_match |
ad8d3bb3 | 13929 | { |
5e0116d5 RS |
13930 | const char *str; |
13931 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
13932 | }; |
13933 | ||
13934 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 13935 | { |
5e0116d5 | 13936 | {"%lo", BFD_RELOC_LO16}, |
ad8d3bb3 | 13937 | #ifdef OBJ_ELF |
5e0116d5 RS |
13938 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
13939 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
13940 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
13941 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
13942 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
13943 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
13944 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
13945 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
13946 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
13947 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
13948 | {"%half", BFD_RELOC_16}, | |
13949 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
13950 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
13951 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
13952 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
13953 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
13954 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
13955 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
13956 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
13957 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
13958 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
ad8d3bb3 | 13959 | #endif |
5e0116d5 | 13960 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
13961 | }; |
13962 | ||
d6f16593 MR |
13963 | static const struct percent_op_match mips16_percent_op[] = |
13964 | { | |
13965 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
13966 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
738e5348 RS |
13967 | {"%got", BFD_RELOC_MIPS16_GOT16}, |
13968 | {"%call16", BFD_RELOC_MIPS16_CALL16}, | |
d6f16593 MR |
13969 | {"%hi", BFD_RELOC_MIPS16_HI16_S} |
13970 | }; | |
13971 | ||
252b5132 | 13972 | |
5e0116d5 RS |
13973 | /* Return true if *STR points to a relocation operator. When returning true, |
13974 | move *STR over the operator and store its relocation code in *RELOC. | |
13975 | Leave both *STR and *RELOC alone when returning false. */ | |
13976 | ||
13977 | static bfd_boolean | |
17a2f251 | 13978 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 13979 | { |
d6f16593 MR |
13980 | const struct percent_op_match *percent_op; |
13981 | size_t limit, i; | |
13982 | ||
13983 | if (mips_opts.mips16) | |
13984 | { | |
13985 | percent_op = mips16_percent_op; | |
13986 | limit = ARRAY_SIZE (mips16_percent_op); | |
13987 | } | |
13988 | else | |
13989 | { | |
13990 | percent_op = mips_percent_op; | |
13991 | limit = ARRAY_SIZE (mips_percent_op); | |
13992 | } | |
76b3015f | 13993 | |
d6f16593 | 13994 | for (i = 0; i < limit; i++) |
5e0116d5 | 13995 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 13996 | { |
3f98094e DJ |
13997 | int len = strlen (percent_op[i].str); |
13998 | ||
13999 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
14000 | continue; | |
14001 | ||
5e0116d5 RS |
14002 | *str += strlen (percent_op[i].str); |
14003 | *reloc = percent_op[i].reloc; | |
394f9b3a | 14004 | |
5e0116d5 RS |
14005 | /* Check whether the output BFD supports this relocation. |
14006 | If not, issue an error and fall back on something safe. */ | |
14007 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 14008 | { |
20203fb9 | 14009 | as_bad (_("relocation %s isn't supported by the current ABI"), |
5e0116d5 | 14010 | percent_op[i].str); |
01a3f561 | 14011 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 14012 | } |
5e0116d5 | 14013 | return TRUE; |
394f9b3a | 14014 | } |
5e0116d5 | 14015 | return FALSE; |
394f9b3a | 14016 | } |
ad8d3bb3 | 14017 | |
ad8d3bb3 | 14018 | |
5e0116d5 RS |
14019 | /* Parse string STR as a 16-bit relocatable operand. Store the |
14020 | expression in *EP and the relocations in the array starting | |
14021 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 14022 | |
01a3f561 | 14023 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 14024 | |
5e0116d5 | 14025 | static size_t |
17a2f251 TS |
14026 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
14027 | char *str) | |
ad8d3bb3 | 14028 | { |
5e0116d5 RS |
14029 | bfd_reloc_code_real_type reversed_reloc[3]; |
14030 | size_t reloc_index, i; | |
09b8f35a RS |
14031 | int crux_depth, str_depth; |
14032 | char *crux; | |
5e0116d5 RS |
14033 | |
14034 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
14035 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
14036 | of the main expression and with CRUX_DEPTH containing the number | |
14037 | of open brackets at that point. */ | |
14038 | reloc_index = -1; | |
14039 | str_depth = 0; | |
14040 | do | |
fb1b3232 | 14041 | { |
09b8f35a RS |
14042 | reloc_index++; |
14043 | crux = str; | |
14044 | crux_depth = str_depth; | |
14045 | ||
14046 | /* Skip over whitespace and brackets, keeping count of the number | |
14047 | of brackets. */ | |
14048 | while (*str == ' ' || *str == '\t' || *str == '(') | |
14049 | if (*str++ == '(') | |
14050 | str_depth++; | |
5e0116d5 | 14051 | } |
09b8f35a RS |
14052 | while (*str == '%' |
14053 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
14054 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 14055 | |
09b8f35a | 14056 | my_getExpression (ep, crux); |
5e0116d5 | 14057 | str = expr_end; |
394f9b3a | 14058 | |
5e0116d5 | 14059 | /* Match every open bracket. */ |
09b8f35a | 14060 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 14061 | if (*str++ == ')') |
09b8f35a | 14062 | crux_depth--; |
394f9b3a | 14063 | |
09b8f35a | 14064 | if (crux_depth > 0) |
20203fb9 | 14065 | as_bad (_("unclosed '('")); |
394f9b3a | 14066 | |
5e0116d5 | 14067 | expr_end = str; |
252b5132 | 14068 | |
01a3f561 | 14069 | if (reloc_index != 0) |
64bdfcaf RS |
14070 | { |
14071 | prev_reloc_op_frag = frag_now; | |
14072 | for (i = 0; i < reloc_index; i++) | |
14073 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
14074 | } | |
fb1b3232 | 14075 | |
5e0116d5 | 14076 | return reloc_index; |
252b5132 RH |
14077 | } |
14078 | ||
14079 | static void | |
17a2f251 | 14080 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
14081 | { |
14082 | char *save_in; | |
14083 | ||
14084 | save_in = input_line_pointer; | |
14085 | input_line_pointer = str; | |
14086 | expression (ep); | |
14087 | expr_end = input_line_pointer; | |
14088 | input_line_pointer = save_in; | |
252b5132 RH |
14089 | } |
14090 | ||
252b5132 | 14091 | char * |
17a2f251 | 14092 | md_atof (int type, char *litP, int *sizeP) |
252b5132 | 14093 | { |
499ac353 | 14094 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
252b5132 RH |
14095 | } |
14096 | ||
14097 | void | |
17a2f251 | 14098 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
14099 | { |
14100 | if (target_big_endian) | |
14101 | number_to_chars_bigendian (buf, val, n); | |
14102 | else | |
14103 | number_to_chars_littleendian (buf, val, n); | |
14104 | } | |
14105 | \f | |
ae948b86 | 14106 | #ifdef OBJ_ELF |
e013f690 TS |
14107 | static int support_64bit_objects(void) |
14108 | { | |
14109 | const char **list, **l; | |
aa3d8fdf | 14110 | int yes; |
e013f690 TS |
14111 | |
14112 | list = bfd_target_list (); | |
14113 | for (l = list; *l != NULL; l++) | |
aeffff67 RS |
14114 | if (strcmp (*l, ELF_TARGET ("elf64-", "big")) == 0 |
14115 | || strcmp (*l, ELF_TARGET ("elf64-", "little")) == 0) | |
e013f690 | 14116 | break; |
aa3d8fdf | 14117 | yes = (*l != NULL); |
e013f690 | 14118 | free (list); |
aa3d8fdf | 14119 | return yes; |
e013f690 | 14120 | } |
ae948b86 | 14121 | #endif /* OBJ_ELF */ |
e013f690 | 14122 | |
78849248 | 14123 | const char *md_shortopts = "O::g::G:"; |
252b5132 | 14124 | |
23fce1e3 NC |
14125 | enum options |
14126 | { | |
14127 | OPTION_MARCH = OPTION_MD_BASE, | |
14128 | OPTION_MTUNE, | |
14129 | OPTION_MIPS1, | |
14130 | OPTION_MIPS2, | |
14131 | OPTION_MIPS3, | |
14132 | OPTION_MIPS4, | |
14133 | OPTION_MIPS5, | |
14134 | OPTION_MIPS32, | |
14135 | OPTION_MIPS64, | |
14136 | OPTION_MIPS32R2, | |
14137 | OPTION_MIPS64R2, | |
14138 | OPTION_MIPS16, | |
14139 | OPTION_NO_MIPS16, | |
14140 | OPTION_MIPS3D, | |
14141 | OPTION_NO_MIPS3D, | |
14142 | OPTION_MDMX, | |
14143 | OPTION_NO_MDMX, | |
14144 | OPTION_DSP, | |
14145 | OPTION_NO_DSP, | |
14146 | OPTION_MT, | |
14147 | OPTION_NO_MT, | |
14148 | OPTION_SMARTMIPS, | |
14149 | OPTION_NO_SMARTMIPS, | |
14150 | OPTION_DSPR2, | |
14151 | OPTION_NO_DSPR2, | |
df58fc94 RS |
14152 | OPTION_MICROMIPS, |
14153 | OPTION_NO_MICROMIPS, | |
23fce1e3 NC |
14154 | OPTION_COMPAT_ARCH_BASE, |
14155 | OPTION_M4650, | |
14156 | OPTION_NO_M4650, | |
14157 | OPTION_M4010, | |
14158 | OPTION_NO_M4010, | |
14159 | OPTION_M4100, | |
14160 | OPTION_NO_M4100, | |
14161 | OPTION_M3900, | |
14162 | OPTION_NO_M3900, | |
14163 | OPTION_M7000_HILO_FIX, | |
6a32d874 CM |
14164 | OPTION_MNO_7000_HILO_FIX, |
14165 | OPTION_FIX_24K, | |
14166 | OPTION_NO_FIX_24K, | |
c67a084a NC |
14167 | OPTION_FIX_LOONGSON2F_JUMP, |
14168 | OPTION_NO_FIX_LOONGSON2F_JUMP, | |
14169 | OPTION_FIX_LOONGSON2F_NOP, | |
14170 | OPTION_NO_FIX_LOONGSON2F_NOP, | |
23fce1e3 NC |
14171 | OPTION_FIX_VR4120, |
14172 | OPTION_NO_FIX_VR4120, | |
14173 | OPTION_FIX_VR4130, | |
14174 | OPTION_NO_FIX_VR4130, | |
d954098f DD |
14175 | OPTION_FIX_CN63XXP1, |
14176 | OPTION_NO_FIX_CN63XXP1, | |
23fce1e3 NC |
14177 | OPTION_TRAP, |
14178 | OPTION_BREAK, | |
14179 | OPTION_EB, | |
14180 | OPTION_EL, | |
14181 | OPTION_FP32, | |
14182 | OPTION_GP32, | |
14183 | OPTION_CONSTRUCT_FLOATS, | |
14184 | OPTION_NO_CONSTRUCT_FLOATS, | |
14185 | OPTION_FP64, | |
14186 | OPTION_GP64, | |
14187 | OPTION_RELAX_BRANCH, | |
14188 | OPTION_NO_RELAX_BRANCH, | |
14189 | OPTION_MSHARED, | |
14190 | OPTION_MNO_SHARED, | |
14191 | OPTION_MSYM32, | |
14192 | OPTION_MNO_SYM32, | |
14193 | OPTION_SOFT_FLOAT, | |
14194 | OPTION_HARD_FLOAT, | |
14195 | OPTION_SINGLE_FLOAT, | |
14196 | OPTION_DOUBLE_FLOAT, | |
14197 | OPTION_32, | |
14198 | #ifdef OBJ_ELF | |
14199 | OPTION_CALL_SHARED, | |
14200 | OPTION_CALL_NONPIC, | |
14201 | OPTION_NON_SHARED, | |
14202 | OPTION_XGOT, | |
14203 | OPTION_MABI, | |
14204 | OPTION_N32, | |
14205 | OPTION_64, | |
14206 | OPTION_MDEBUG, | |
14207 | OPTION_NO_MDEBUG, | |
14208 | OPTION_PDR, | |
14209 | OPTION_NO_PDR, | |
14210 | OPTION_MVXWORKS_PIC, | |
14211 | #endif /* OBJ_ELF */ | |
14212 | OPTION_END_OF_ENUM | |
14213 | }; | |
14214 | ||
e972090a NC |
14215 | struct option md_longopts[] = |
14216 | { | |
f9b4148d | 14217 | /* Options which specify architecture. */ |
f9b4148d | 14218 | {"march", required_argument, NULL, OPTION_MARCH}, |
f9b4148d | 14219 | {"mtune", required_argument, NULL, OPTION_MTUNE}, |
252b5132 RH |
14220 | {"mips0", no_argument, NULL, OPTION_MIPS1}, |
14221 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
252b5132 | 14222 | {"mips2", no_argument, NULL, OPTION_MIPS2}, |
252b5132 | 14223 | {"mips3", no_argument, NULL, OPTION_MIPS3}, |
252b5132 | 14224 | {"mips4", no_argument, NULL, OPTION_MIPS4}, |
ae948b86 | 14225 | {"mips5", no_argument, NULL, OPTION_MIPS5}, |
ae948b86 | 14226 | {"mips32", no_argument, NULL, OPTION_MIPS32}, |
ae948b86 | 14227 | {"mips64", no_argument, NULL, OPTION_MIPS64}, |
f9b4148d | 14228 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, |
5f74bc13 | 14229 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, |
f9b4148d CD |
14230 | |
14231 | /* Options which specify Application Specific Extensions (ASEs). */ | |
f9b4148d | 14232 | {"mips16", no_argument, NULL, OPTION_MIPS16}, |
f9b4148d | 14233 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, |
f9b4148d | 14234 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, |
f9b4148d | 14235 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, |
f9b4148d | 14236 | {"mdmx", no_argument, NULL, OPTION_MDMX}, |
f9b4148d | 14237 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, |
74cd071d | 14238 | {"mdsp", no_argument, NULL, OPTION_DSP}, |
74cd071d | 14239 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, |
ef2e4d86 | 14240 | {"mmt", no_argument, NULL, OPTION_MT}, |
ef2e4d86 | 14241 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, |
e16bfa71 | 14242 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, |
e16bfa71 | 14243 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, |
8b082fb1 | 14244 | {"mdspr2", no_argument, NULL, OPTION_DSPR2}, |
8b082fb1 | 14245 | {"mno-dspr2", no_argument, NULL, OPTION_NO_DSPR2}, |
df58fc94 RS |
14246 | {"mmicromips", no_argument, NULL, OPTION_MICROMIPS}, |
14247 | {"mno-micromips", no_argument, NULL, OPTION_NO_MICROMIPS}, | |
f9b4148d CD |
14248 | |
14249 | /* Old-style architecture options. Don't add more of these. */ | |
f9b4148d | 14250 | {"m4650", no_argument, NULL, OPTION_M4650}, |
f9b4148d | 14251 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, |
f9b4148d | 14252 | {"m4010", no_argument, NULL, OPTION_M4010}, |
f9b4148d | 14253 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, |
f9b4148d | 14254 | {"m4100", no_argument, NULL, OPTION_M4100}, |
f9b4148d | 14255 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, |
f9b4148d | 14256 | {"m3900", no_argument, NULL, OPTION_M3900}, |
f9b4148d CD |
14257 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, |
14258 | ||
14259 | /* Options which enable bug fixes. */ | |
f9b4148d | 14260 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, |
f9b4148d CD |
14261 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, |
14262 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
c67a084a NC |
14263 | {"mfix-loongson2f-jump", no_argument, NULL, OPTION_FIX_LOONGSON2F_JUMP}, |
14264 | {"mno-fix-loongson2f-jump", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_JUMP}, | |
14265 | {"mfix-loongson2f-nop", no_argument, NULL, OPTION_FIX_LOONGSON2F_NOP}, | |
14266 | {"mno-fix-loongson2f-nop", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_NOP}, | |
d766e8ec RS |
14267 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, |
14268 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
7d8e00cf RS |
14269 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, |
14270 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
6a32d874 CM |
14271 | {"mfix-24k", no_argument, NULL, OPTION_FIX_24K}, |
14272 | {"mno-fix-24k", no_argument, NULL, OPTION_NO_FIX_24K}, | |
d954098f DD |
14273 | {"mfix-cn63xxp1", no_argument, NULL, OPTION_FIX_CN63XXP1}, |
14274 | {"mno-fix-cn63xxp1", no_argument, NULL, OPTION_NO_FIX_CN63XXP1}, | |
f9b4148d CD |
14275 | |
14276 | /* Miscellaneous options. */ | |
252b5132 RH |
14277 | {"trap", no_argument, NULL, OPTION_TRAP}, |
14278 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
252b5132 RH |
14279 | {"break", no_argument, NULL, OPTION_BREAK}, |
14280 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
252b5132 | 14281 | {"EB", no_argument, NULL, OPTION_EB}, |
252b5132 | 14282 | {"EL", no_argument, NULL, OPTION_EL}, |
ae948b86 | 14283 | {"mfp32", no_argument, NULL, OPTION_FP32}, |
c97ef257 | 14284 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
119d663a | 14285 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
119d663a | 14286 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
316f5878 | 14287 | {"mfp64", no_argument, NULL, OPTION_FP64}, |
ae948b86 | 14288 | {"mgp64", no_argument, NULL, OPTION_GP64}, |
4a6a3df4 AO |
14289 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, |
14290 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
aa6975fb ILT |
14291 | {"mshared", no_argument, NULL, OPTION_MSHARED}, |
14292 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
aed1a261 RS |
14293 | {"msym32", no_argument, NULL, OPTION_MSYM32}, |
14294 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
037b32b9 AN |
14295 | {"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT}, |
14296 | {"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT}, | |
037b32b9 AN |
14297 | {"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT}, |
14298 | {"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT}, | |
23fce1e3 NC |
14299 | |
14300 | /* Strictly speaking this next option is ELF specific, | |
14301 | but we allow it for other ports as well in order to | |
14302 | make testing easier. */ | |
14303 | {"32", no_argument, NULL, OPTION_32}, | |
037b32b9 | 14304 | |
f9b4148d | 14305 | /* ELF-specific options. */ |
156c2f8b | 14306 | #ifdef OBJ_ELF |
156c2f8b NC |
14307 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
14308 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
861fb55a | 14309 | {"call_nonpic", no_argument, NULL, OPTION_CALL_NONPIC}, |
156c2f8b NC |
14310 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
14311 | {"xgot", no_argument, NULL, OPTION_XGOT}, | |
ae948b86 | 14312 | {"mabi", required_argument, NULL, OPTION_MABI}, |
e013f690 | 14313 | {"n32", no_argument, NULL, OPTION_N32}, |
156c2f8b | 14314 | {"64", no_argument, NULL, OPTION_64}, |
ecb4347a | 14315 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, |
ecb4347a | 14316 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, |
dcd410fe | 14317 | {"mpdr", no_argument, NULL, OPTION_PDR}, |
dcd410fe | 14318 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, |
0a44bf69 | 14319 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, |
ae948b86 | 14320 | #endif /* OBJ_ELF */ |
f9b4148d | 14321 | |
252b5132 RH |
14322 | {NULL, no_argument, NULL, 0} |
14323 | }; | |
156c2f8b | 14324 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 14325 | |
316f5878 RS |
14326 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
14327 | NEW_VALUE. Warn if another value was already specified. Note: | |
14328 | we have to defer parsing the -march and -mtune arguments in order | |
14329 | to handle 'from-abi' correctly, since the ABI might be specified | |
14330 | in a later argument. */ | |
14331 | ||
14332 | static void | |
17a2f251 | 14333 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
14334 | { |
14335 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
14336 | as_warn (_("A different %s was already specified, is now %s"), | |
14337 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
14338 | new_value); | |
14339 | ||
14340 | *string_ptr = new_value; | |
14341 | } | |
14342 | ||
252b5132 | 14343 | int |
17a2f251 | 14344 | md_parse_option (int c, char *arg) |
252b5132 RH |
14345 | { |
14346 | switch (c) | |
14347 | { | |
119d663a NC |
14348 | case OPTION_CONSTRUCT_FLOATS: |
14349 | mips_disable_float_construction = 0; | |
14350 | break; | |
bdaaa2e1 | 14351 | |
119d663a NC |
14352 | case OPTION_NO_CONSTRUCT_FLOATS: |
14353 | mips_disable_float_construction = 1; | |
14354 | break; | |
bdaaa2e1 | 14355 | |
252b5132 RH |
14356 | case OPTION_TRAP: |
14357 | mips_trap = 1; | |
14358 | break; | |
14359 | ||
14360 | case OPTION_BREAK: | |
14361 | mips_trap = 0; | |
14362 | break; | |
14363 | ||
14364 | case OPTION_EB: | |
14365 | target_big_endian = 1; | |
14366 | break; | |
14367 | ||
14368 | case OPTION_EL: | |
14369 | target_big_endian = 0; | |
14370 | break; | |
14371 | ||
14372 | case 'O': | |
4ffff32f TS |
14373 | if (arg == NULL) |
14374 | mips_optimize = 1; | |
14375 | else if (arg[0] == '0') | |
14376 | mips_optimize = 0; | |
14377 | else if (arg[0] == '1') | |
252b5132 RH |
14378 | mips_optimize = 1; |
14379 | else | |
14380 | mips_optimize = 2; | |
14381 | break; | |
14382 | ||
14383 | case 'g': | |
14384 | if (arg == NULL) | |
14385 | mips_debug = 2; | |
14386 | else | |
14387 | mips_debug = atoi (arg); | |
252b5132 RH |
14388 | break; |
14389 | ||
14390 | case OPTION_MIPS1: | |
316f5878 | 14391 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
14392 | break; |
14393 | ||
14394 | case OPTION_MIPS2: | |
316f5878 | 14395 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
14396 | break; |
14397 | ||
14398 | case OPTION_MIPS3: | |
316f5878 | 14399 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
14400 | break; |
14401 | ||
14402 | case OPTION_MIPS4: | |
316f5878 | 14403 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
14404 | break; |
14405 | ||
84ea6cf2 | 14406 | case OPTION_MIPS5: |
316f5878 | 14407 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
14408 | break; |
14409 | ||
e7af610e | 14410 | case OPTION_MIPS32: |
316f5878 | 14411 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
14412 | break; |
14413 | ||
af7ee8bf CD |
14414 | case OPTION_MIPS32R2: |
14415 | file_mips_isa = ISA_MIPS32R2; | |
14416 | break; | |
14417 | ||
5f74bc13 CD |
14418 | case OPTION_MIPS64R2: |
14419 | file_mips_isa = ISA_MIPS64R2; | |
14420 | break; | |
14421 | ||
84ea6cf2 | 14422 | case OPTION_MIPS64: |
316f5878 | 14423 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
14424 | break; |
14425 | ||
ec68c924 | 14426 | case OPTION_MTUNE: |
316f5878 RS |
14427 | mips_set_option_string (&mips_tune_string, arg); |
14428 | break; | |
ec68c924 | 14429 | |
316f5878 RS |
14430 | case OPTION_MARCH: |
14431 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
14432 | break; |
14433 | ||
14434 | case OPTION_M4650: | |
316f5878 RS |
14435 | mips_set_option_string (&mips_arch_string, "4650"); |
14436 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
14437 | break; |
14438 | ||
14439 | case OPTION_NO_M4650: | |
14440 | break; | |
14441 | ||
14442 | case OPTION_M4010: | |
316f5878 RS |
14443 | mips_set_option_string (&mips_arch_string, "4010"); |
14444 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
14445 | break; |
14446 | ||
14447 | case OPTION_NO_M4010: | |
14448 | break; | |
14449 | ||
14450 | case OPTION_M4100: | |
316f5878 RS |
14451 | mips_set_option_string (&mips_arch_string, "4100"); |
14452 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
14453 | break; |
14454 | ||
14455 | case OPTION_NO_M4100: | |
14456 | break; | |
14457 | ||
252b5132 | 14458 | case OPTION_M3900: |
316f5878 RS |
14459 | mips_set_option_string (&mips_arch_string, "3900"); |
14460 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 14461 | break; |
bdaaa2e1 | 14462 | |
252b5132 RH |
14463 | case OPTION_NO_M3900: |
14464 | break; | |
14465 | ||
deec1734 CD |
14466 | case OPTION_MDMX: |
14467 | mips_opts.ase_mdmx = 1; | |
14468 | break; | |
14469 | ||
14470 | case OPTION_NO_MDMX: | |
14471 | mips_opts.ase_mdmx = 0; | |
14472 | break; | |
14473 | ||
74cd071d CF |
14474 | case OPTION_DSP: |
14475 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 14476 | mips_opts.ase_dspr2 = 0; |
74cd071d CF |
14477 | break; |
14478 | ||
14479 | case OPTION_NO_DSP: | |
8b082fb1 TS |
14480 | mips_opts.ase_dsp = 0; |
14481 | mips_opts.ase_dspr2 = 0; | |
14482 | break; | |
14483 | ||
14484 | case OPTION_DSPR2: | |
14485 | mips_opts.ase_dspr2 = 1; | |
14486 | mips_opts.ase_dsp = 1; | |
14487 | break; | |
14488 | ||
14489 | case OPTION_NO_DSPR2: | |
14490 | mips_opts.ase_dspr2 = 0; | |
74cd071d CF |
14491 | mips_opts.ase_dsp = 0; |
14492 | break; | |
14493 | ||
ef2e4d86 CF |
14494 | case OPTION_MT: |
14495 | mips_opts.ase_mt = 1; | |
14496 | break; | |
14497 | ||
14498 | case OPTION_NO_MT: | |
14499 | mips_opts.ase_mt = 0; | |
14500 | break; | |
14501 | ||
df58fc94 RS |
14502 | case OPTION_MICROMIPS: |
14503 | if (mips_opts.mips16 == 1) | |
14504 | { | |
14505 | as_bad (_("-mmicromips cannot be used with -mips16")); | |
14506 | return 0; | |
14507 | } | |
14508 | mips_opts.micromips = 1; | |
14509 | mips_no_prev_insn (); | |
14510 | break; | |
14511 | ||
14512 | case OPTION_NO_MICROMIPS: | |
14513 | mips_opts.micromips = 0; | |
14514 | mips_no_prev_insn (); | |
14515 | break; | |
14516 | ||
252b5132 | 14517 | case OPTION_MIPS16: |
df58fc94 RS |
14518 | if (mips_opts.micromips == 1) |
14519 | { | |
14520 | as_bad (_("-mips16 cannot be used with -micromips")); | |
14521 | return 0; | |
14522 | } | |
252b5132 | 14523 | mips_opts.mips16 = 1; |
7d10b47d | 14524 | mips_no_prev_insn (); |
252b5132 RH |
14525 | break; |
14526 | ||
14527 | case OPTION_NO_MIPS16: | |
14528 | mips_opts.mips16 = 0; | |
7d10b47d | 14529 | mips_no_prev_insn (); |
252b5132 RH |
14530 | break; |
14531 | ||
1f25f5d3 CD |
14532 | case OPTION_MIPS3D: |
14533 | mips_opts.ase_mips3d = 1; | |
14534 | break; | |
14535 | ||
14536 | case OPTION_NO_MIPS3D: | |
14537 | mips_opts.ase_mips3d = 0; | |
14538 | break; | |
14539 | ||
e16bfa71 TS |
14540 | case OPTION_SMARTMIPS: |
14541 | mips_opts.ase_smartmips = 1; | |
14542 | break; | |
14543 | ||
14544 | case OPTION_NO_SMARTMIPS: | |
14545 | mips_opts.ase_smartmips = 0; | |
14546 | break; | |
14547 | ||
6a32d874 CM |
14548 | case OPTION_FIX_24K: |
14549 | mips_fix_24k = 1; | |
14550 | break; | |
14551 | ||
14552 | case OPTION_NO_FIX_24K: | |
14553 | mips_fix_24k = 0; | |
14554 | break; | |
14555 | ||
c67a084a NC |
14556 | case OPTION_FIX_LOONGSON2F_JUMP: |
14557 | mips_fix_loongson2f_jump = TRUE; | |
14558 | break; | |
14559 | ||
14560 | case OPTION_NO_FIX_LOONGSON2F_JUMP: | |
14561 | mips_fix_loongson2f_jump = FALSE; | |
14562 | break; | |
14563 | ||
14564 | case OPTION_FIX_LOONGSON2F_NOP: | |
14565 | mips_fix_loongson2f_nop = TRUE; | |
14566 | break; | |
14567 | ||
14568 | case OPTION_NO_FIX_LOONGSON2F_NOP: | |
14569 | mips_fix_loongson2f_nop = FALSE; | |
14570 | break; | |
14571 | ||
d766e8ec RS |
14572 | case OPTION_FIX_VR4120: |
14573 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
14574 | break; |
14575 | ||
d766e8ec RS |
14576 | case OPTION_NO_FIX_VR4120: |
14577 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
14578 | break; |
14579 | ||
7d8e00cf RS |
14580 | case OPTION_FIX_VR4130: |
14581 | mips_fix_vr4130 = 1; | |
14582 | break; | |
14583 | ||
14584 | case OPTION_NO_FIX_VR4130: | |
14585 | mips_fix_vr4130 = 0; | |
14586 | break; | |
14587 | ||
d954098f DD |
14588 | case OPTION_FIX_CN63XXP1: |
14589 | mips_fix_cn63xxp1 = TRUE; | |
14590 | break; | |
14591 | ||
14592 | case OPTION_NO_FIX_CN63XXP1: | |
14593 | mips_fix_cn63xxp1 = FALSE; | |
14594 | break; | |
14595 | ||
4a6a3df4 AO |
14596 | case OPTION_RELAX_BRANCH: |
14597 | mips_relax_branch = 1; | |
14598 | break; | |
14599 | ||
14600 | case OPTION_NO_RELAX_BRANCH: | |
14601 | mips_relax_branch = 0; | |
14602 | break; | |
14603 | ||
aa6975fb ILT |
14604 | case OPTION_MSHARED: |
14605 | mips_in_shared = TRUE; | |
14606 | break; | |
14607 | ||
14608 | case OPTION_MNO_SHARED: | |
14609 | mips_in_shared = FALSE; | |
14610 | break; | |
14611 | ||
aed1a261 RS |
14612 | case OPTION_MSYM32: |
14613 | mips_opts.sym32 = TRUE; | |
14614 | break; | |
14615 | ||
14616 | case OPTION_MNO_SYM32: | |
14617 | mips_opts.sym32 = FALSE; | |
14618 | break; | |
14619 | ||
0f074f60 | 14620 | #ifdef OBJ_ELF |
252b5132 RH |
14621 | /* When generating ELF code, we permit -KPIC and -call_shared to |
14622 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
14623 | intended to be compatible with Irix 5. */ | |
14624 | case OPTION_CALL_SHARED: | |
f43abd2b | 14625 | if (!IS_ELF) |
252b5132 RH |
14626 | { |
14627 | as_bad (_("-call_shared is supported only for ELF format")); | |
14628 | return 0; | |
14629 | } | |
14630 | mips_pic = SVR4_PIC; | |
143d77c5 | 14631 | mips_abicalls = TRUE; |
252b5132 RH |
14632 | break; |
14633 | ||
861fb55a DJ |
14634 | case OPTION_CALL_NONPIC: |
14635 | if (!IS_ELF) | |
14636 | { | |
14637 | as_bad (_("-call_nonpic is supported only for ELF format")); | |
14638 | return 0; | |
14639 | } | |
14640 | mips_pic = NO_PIC; | |
14641 | mips_abicalls = TRUE; | |
14642 | break; | |
14643 | ||
252b5132 | 14644 | case OPTION_NON_SHARED: |
f43abd2b | 14645 | if (!IS_ELF) |
252b5132 RH |
14646 | { |
14647 | as_bad (_("-non_shared is supported only for ELF format")); | |
14648 | return 0; | |
14649 | } | |
14650 | mips_pic = NO_PIC; | |
143d77c5 | 14651 | mips_abicalls = FALSE; |
252b5132 RH |
14652 | break; |
14653 | ||
44075ae2 TS |
14654 | /* The -xgot option tells the assembler to use 32 bit offsets |
14655 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
14656 | compatibility. */ |
14657 | case OPTION_XGOT: | |
14658 | mips_big_got = 1; | |
14659 | break; | |
0f074f60 | 14660 | #endif /* OBJ_ELF */ |
252b5132 RH |
14661 | |
14662 | case 'G': | |
6caf9ef4 TS |
14663 | g_switch_value = atoi (arg); |
14664 | g_switch_seen = 1; | |
252b5132 RH |
14665 | break; |
14666 | ||
34ba82a8 TS |
14667 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
14668 | and -mabi=64. */ | |
252b5132 | 14669 | case OPTION_32: |
23fce1e3 NC |
14670 | if (IS_ELF) |
14671 | mips_abi = O32_ABI; | |
14672 | /* We silently ignore -32 for non-ELF targets. This greatly | |
14673 | simplifies the construction of the MIPS GAS test cases. */ | |
252b5132 RH |
14674 | break; |
14675 | ||
23fce1e3 | 14676 | #ifdef OBJ_ELF |
e013f690 | 14677 | case OPTION_N32: |
f43abd2b | 14678 | if (!IS_ELF) |
34ba82a8 TS |
14679 | { |
14680 | as_bad (_("-n32 is supported for ELF format only")); | |
14681 | return 0; | |
14682 | } | |
316f5878 | 14683 | mips_abi = N32_ABI; |
e013f690 | 14684 | break; |
252b5132 | 14685 | |
e013f690 | 14686 | case OPTION_64: |
f43abd2b | 14687 | if (!IS_ELF) |
34ba82a8 TS |
14688 | { |
14689 | as_bad (_("-64 is supported for ELF format only")); | |
14690 | return 0; | |
14691 | } | |
316f5878 | 14692 | mips_abi = N64_ABI; |
f43abd2b | 14693 | if (!support_64bit_objects()) |
e013f690 | 14694 | as_fatal (_("No compiled in support for 64 bit object file format")); |
252b5132 | 14695 | break; |
ae948b86 | 14696 | #endif /* OBJ_ELF */ |
252b5132 | 14697 | |
c97ef257 | 14698 | case OPTION_GP32: |
a325df1d | 14699 | file_mips_gp32 = 1; |
c97ef257 AH |
14700 | break; |
14701 | ||
14702 | case OPTION_GP64: | |
a325df1d | 14703 | file_mips_gp32 = 0; |
c97ef257 | 14704 | break; |
252b5132 | 14705 | |
ca4e0257 | 14706 | case OPTION_FP32: |
a325df1d | 14707 | file_mips_fp32 = 1; |
316f5878 RS |
14708 | break; |
14709 | ||
14710 | case OPTION_FP64: | |
14711 | file_mips_fp32 = 0; | |
ca4e0257 RS |
14712 | break; |
14713 | ||
037b32b9 AN |
14714 | case OPTION_SINGLE_FLOAT: |
14715 | file_mips_single_float = 1; | |
14716 | break; | |
14717 | ||
14718 | case OPTION_DOUBLE_FLOAT: | |
14719 | file_mips_single_float = 0; | |
14720 | break; | |
14721 | ||
14722 | case OPTION_SOFT_FLOAT: | |
14723 | file_mips_soft_float = 1; | |
14724 | break; | |
14725 | ||
14726 | case OPTION_HARD_FLOAT: | |
14727 | file_mips_soft_float = 0; | |
14728 | break; | |
14729 | ||
ae948b86 | 14730 | #ifdef OBJ_ELF |
252b5132 | 14731 | case OPTION_MABI: |
f43abd2b | 14732 | if (!IS_ELF) |
34ba82a8 TS |
14733 | { |
14734 | as_bad (_("-mabi is supported for ELF format only")); | |
14735 | return 0; | |
14736 | } | |
e013f690 | 14737 | if (strcmp (arg, "32") == 0) |
316f5878 | 14738 | mips_abi = O32_ABI; |
e013f690 | 14739 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 14740 | mips_abi = O64_ABI; |
e013f690 | 14741 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 14742 | mips_abi = N32_ABI; |
e013f690 TS |
14743 | else if (strcmp (arg, "64") == 0) |
14744 | { | |
316f5878 | 14745 | mips_abi = N64_ABI; |
e013f690 TS |
14746 | if (! support_64bit_objects()) |
14747 | as_fatal (_("No compiled in support for 64 bit object file " | |
14748 | "format")); | |
14749 | } | |
14750 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 14751 | mips_abi = EABI_ABI; |
e013f690 | 14752 | else |
da0e507f TS |
14753 | { |
14754 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
14755 | return 0; | |
14756 | } | |
252b5132 | 14757 | break; |
e013f690 | 14758 | #endif /* OBJ_ELF */ |
252b5132 | 14759 | |
6b76fefe | 14760 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 14761 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
14762 | break; |
14763 | ||
9ee72ff1 | 14764 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 14765 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
14766 | break; |
14767 | ||
ecb4347a DJ |
14768 | #ifdef OBJ_ELF |
14769 | case OPTION_MDEBUG: | |
b34976b6 | 14770 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
14771 | break; |
14772 | ||
14773 | case OPTION_NO_MDEBUG: | |
b34976b6 | 14774 | mips_flag_mdebug = FALSE; |
ecb4347a | 14775 | break; |
dcd410fe RO |
14776 | |
14777 | case OPTION_PDR: | |
14778 | mips_flag_pdr = TRUE; | |
14779 | break; | |
14780 | ||
14781 | case OPTION_NO_PDR: | |
14782 | mips_flag_pdr = FALSE; | |
14783 | break; | |
0a44bf69 RS |
14784 | |
14785 | case OPTION_MVXWORKS_PIC: | |
14786 | mips_pic = VXWORKS_PIC; | |
14787 | break; | |
ecb4347a DJ |
14788 | #endif /* OBJ_ELF */ |
14789 | ||
252b5132 RH |
14790 | default: |
14791 | return 0; | |
14792 | } | |
14793 | ||
c67a084a NC |
14794 | mips_fix_loongson2f = mips_fix_loongson2f_nop || mips_fix_loongson2f_jump; |
14795 | ||
252b5132 RH |
14796 | return 1; |
14797 | } | |
316f5878 RS |
14798 | \f |
14799 | /* Set up globals to generate code for the ISA or processor | |
14800 | described by INFO. */ | |
252b5132 | 14801 | |
252b5132 | 14802 | static void |
17a2f251 | 14803 | mips_set_architecture (const struct mips_cpu_info *info) |
252b5132 | 14804 | { |
316f5878 | 14805 | if (info != 0) |
252b5132 | 14806 | { |
fef14a42 TS |
14807 | file_mips_arch = info->cpu; |
14808 | mips_opts.arch = info->cpu; | |
316f5878 | 14809 | mips_opts.isa = info->isa; |
252b5132 | 14810 | } |
252b5132 RH |
14811 | } |
14812 | ||
252b5132 | 14813 | |
316f5878 | 14814 | /* Likewise for tuning. */ |
252b5132 | 14815 | |
316f5878 | 14816 | static void |
17a2f251 | 14817 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
14818 | { |
14819 | if (info != 0) | |
fef14a42 | 14820 | mips_tune = info->cpu; |
316f5878 | 14821 | } |
80cc45a5 | 14822 | |
34ba82a8 | 14823 | |
252b5132 | 14824 | void |
17a2f251 | 14825 | mips_after_parse_args (void) |
e9670677 | 14826 | { |
fef14a42 TS |
14827 | const struct mips_cpu_info *arch_info = 0; |
14828 | const struct mips_cpu_info *tune_info = 0; | |
14829 | ||
e9670677 | 14830 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 14831 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 14832 | { |
6caf9ef4 | 14833 | if (g_switch_seen && g_switch_value != 0) |
e9670677 MR |
14834 | as_bad (_("-G not supported in this configuration.")); |
14835 | g_switch_value = 0; | |
14836 | } | |
14837 | ||
cac012d6 AO |
14838 | if (mips_abi == NO_ABI) |
14839 | mips_abi = MIPS_DEFAULT_ABI; | |
14840 | ||
22923709 RS |
14841 | /* The following code determines the architecture and register size. |
14842 | Similar code was added to GCC 3.3 (see override_options() in | |
14843 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
14844 | as much as possible. */ | |
e9670677 | 14845 | |
316f5878 | 14846 | if (mips_arch_string != 0) |
fef14a42 | 14847 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 14848 | |
316f5878 | 14849 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 14850 | { |
316f5878 | 14851 | /* Handle -mipsN. At this point, file_mips_isa contains the |
fef14a42 | 14852 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 14853 | the -march selection (if any). */ |
fef14a42 | 14854 | if (arch_info != 0) |
e9670677 | 14855 | { |
316f5878 RS |
14856 | /* -march takes precedence over -mipsN, since it is more descriptive. |
14857 | There's no harm in specifying both as long as the ISA levels | |
14858 | are the same. */ | |
fef14a42 | 14859 | if (file_mips_isa != arch_info->isa) |
316f5878 RS |
14860 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), |
14861 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
fef14a42 | 14862 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 14863 | } |
316f5878 | 14864 | else |
fef14a42 | 14865 | arch_info = mips_cpu_info_from_isa (file_mips_isa); |
e9670677 MR |
14866 | } |
14867 | ||
fef14a42 TS |
14868 | if (arch_info == 0) |
14869 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
e9670677 | 14870 | |
fef14a42 | 14871 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
20203fb9 | 14872 | as_bad (_("-march=%s is not compatible with the selected ABI"), |
fef14a42 TS |
14873 | arch_info->name); |
14874 | ||
14875 | mips_set_architecture (arch_info); | |
14876 | ||
14877 | /* Optimize for file_mips_arch, unless -mtune selects a different processor. */ | |
14878 | if (mips_tune_string != 0) | |
14879 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 14880 | |
fef14a42 TS |
14881 | if (tune_info == 0) |
14882 | mips_set_tune (arch_info); | |
14883 | else | |
14884 | mips_set_tune (tune_info); | |
e9670677 | 14885 | |
316f5878 | 14886 | if (file_mips_gp32 >= 0) |
e9670677 | 14887 | { |
316f5878 RS |
14888 | /* The user specified the size of the integer registers. Make sure |
14889 | it agrees with the ABI and ISA. */ | |
14890 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
14891 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
14892 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
14893 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
14894 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
14895 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
14896 | } |
14897 | else | |
14898 | { | |
316f5878 RS |
14899 | /* Infer the integer register size from the ABI and processor. |
14900 | Restrict ourselves to 32-bit registers if that's all the | |
14901 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
14902 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
14903 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
14904 | } |
14905 | ||
ad3fea08 TS |
14906 | switch (file_mips_fp32) |
14907 | { | |
14908 | default: | |
14909 | case -1: | |
14910 | /* No user specified float register size. | |
14911 | ??? GAS treats single-float processors as though they had 64-bit | |
14912 | float registers (although it complains when double-precision | |
14913 | instructions are used). As things stand, saying they have 32-bit | |
14914 | registers would lead to spurious "register must be even" messages. | |
14915 | So here we assume float registers are never smaller than the | |
14916 | integer ones. */ | |
14917 | if (file_mips_gp32 == 0) | |
14918 | /* 64-bit integer registers implies 64-bit float registers. */ | |
14919 | file_mips_fp32 = 0; | |
14920 | else if ((mips_opts.ase_mips3d > 0 || mips_opts.ase_mdmx > 0) | |
14921 | && ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
14922 | /* -mips3d and -mdmx imply 64-bit float registers, if possible. */ | |
14923 | file_mips_fp32 = 0; | |
14924 | else | |
14925 | /* 32-bit float registers. */ | |
14926 | file_mips_fp32 = 1; | |
14927 | break; | |
14928 | ||
14929 | /* The user specified the size of the float registers. Check if it | |
14930 | agrees with the ABI and ISA. */ | |
14931 | case 0: | |
14932 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
14933 | as_bad (_("-mfp64 used with a 32-bit fpu")); | |
14934 | else if (ABI_NEEDS_32BIT_REGS (mips_abi) | |
14935 | && !ISA_HAS_MXHC1 (mips_opts.isa)) | |
14936 | as_warn (_("-mfp64 used with a 32-bit ABI")); | |
14937 | break; | |
14938 | case 1: | |
14939 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
14940 | as_warn (_("-mfp32 used with a 64-bit ABI")); | |
14941 | break; | |
14942 | } | |
e9670677 | 14943 | |
316f5878 | 14944 | /* End of GCC-shared inference code. */ |
e9670677 | 14945 | |
17a2f251 TS |
14946 | /* This flag is set when we have a 64-bit capable CPU but use only |
14947 | 32-bit wide registers. Note that EABI does not use it. */ | |
14948 | if (ISA_HAS_64BIT_REGS (mips_opts.isa) | |
14949 | && ((mips_abi == NO_ABI && file_mips_gp32 == 1) | |
14950 | || mips_abi == O32_ABI)) | |
316f5878 | 14951 | mips_32bitmode = 1; |
e9670677 MR |
14952 | |
14953 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
14954 | as_bad (_("trap exception not supported at ISA 1")); | |
14955 | ||
e9670677 MR |
14956 | /* If the selected architecture includes support for ASEs, enable |
14957 | generation of code for them. */ | |
a4672219 | 14958 | if (mips_opts.mips16 == -1) |
fef14a42 | 14959 | mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_arch)) ? 1 : 0; |
df58fc94 RS |
14960 | if (mips_opts.micromips == -1) |
14961 | mips_opts.micromips = (CPU_HAS_MICROMIPS (file_mips_arch)) ? 1 : 0; | |
ffdefa66 | 14962 | if (mips_opts.ase_mips3d == -1) |
65263ce3 | 14963 | mips_opts.ase_mips3d = ((arch_info->flags & MIPS_CPU_ASE_MIPS3D) |
ad3fea08 TS |
14964 | && file_mips_fp32 == 0) ? 1 : 0; |
14965 | if (mips_opts.ase_mips3d && file_mips_fp32 == 1) | |
14966 | as_bad (_("-mfp32 used with -mips3d")); | |
14967 | ||
ffdefa66 | 14968 | if (mips_opts.ase_mdmx == -1) |
65263ce3 | 14969 | mips_opts.ase_mdmx = ((arch_info->flags & MIPS_CPU_ASE_MDMX) |
ad3fea08 TS |
14970 | && file_mips_fp32 == 0) ? 1 : 0; |
14971 | if (mips_opts.ase_mdmx && file_mips_fp32 == 1) | |
14972 | as_bad (_("-mfp32 used with -mdmx")); | |
14973 | ||
14974 | if (mips_opts.ase_smartmips == -1) | |
14975 | mips_opts.ase_smartmips = (arch_info->flags & MIPS_CPU_ASE_SMARTMIPS) ? 1 : 0; | |
14976 | if (mips_opts.ase_smartmips && !ISA_SUPPORTS_SMARTMIPS) | |
20203fb9 NC |
14977 | as_warn (_("%s ISA does not support SmartMIPS"), |
14978 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 14979 | |
74cd071d | 14980 | if (mips_opts.ase_dsp == -1) |
ad3fea08 TS |
14981 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; |
14982 | if (mips_opts.ase_dsp && !ISA_SUPPORTS_DSP_ASE) | |
20203fb9 NC |
14983 | as_warn (_("%s ISA does not support DSP ASE"), |
14984 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 14985 | |
8b082fb1 TS |
14986 | if (mips_opts.ase_dspr2 == -1) |
14987 | { | |
14988 | mips_opts.ase_dspr2 = (arch_info->flags & MIPS_CPU_ASE_DSPR2) ? 1 : 0; | |
14989 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; | |
14990 | } | |
14991 | if (mips_opts.ase_dspr2 && !ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 NC |
14992 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
14993 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
8b082fb1 | 14994 | |
ef2e4d86 | 14995 | if (mips_opts.ase_mt == -1) |
ad3fea08 TS |
14996 | mips_opts.ase_mt = (arch_info->flags & MIPS_CPU_ASE_MT) ? 1 : 0; |
14997 | if (mips_opts.ase_mt && !ISA_SUPPORTS_MT_ASE) | |
20203fb9 NC |
14998 | as_warn (_("%s ISA does not support MT ASE"), |
14999 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
e9670677 | 15000 | |
e9670677 | 15001 | file_mips_isa = mips_opts.isa; |
e9670677 MR |
15002 | file_ase_mips3d = mips_opts.ase_mips3d; |
15003 | file_ase_mdmx = mips_opts.ase_mdmx; | |
e16bfa71 | 15004 | file_ase_smartmips = mips_opts.ase_smartmips; |
74cd071d | 15005 | file_ase_dsp = mips_opts.ase_dsp; |
8b082fb1 | 15006 | file_ase_dspr2 = mips_opts.ase_dspr2; |
ef2e4d86 | 15007 | file_ase_mt = mips_opts.ase_mt; |
e9670677 MR |
15008 | mips_opts.gp32 = file_mips_gp32; |
15009 | mips_opts.fp32 = file_mips_fp32; | |
037b32b9 AN |
15010 | mips_opts.soft_float = file_mips_soft_float; |
15011 | mips_opts.single_float = file_mips_single_float; | |
e9670677 | 15012 | |
ecb4347a DJ |
15013 | if (mips_flag_mdebug < 0) |
15014 | { | |
15015 | #ifdef OBJ_MAYBE_ECOFF | |
15016 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
15017 | mips_flag_mdebug = 1; | |
15018 | else | |
15019 | #endif /* OBJ_MAYBE_ECOFF */ | |
15020 | mips_flag_mdebug = 0; | |
15021 | } | |
e9670677 MR |
15022 | } |
15023 | \f | |
15024 | void | |
17a2f251 | 15025 | mips_init_after_args (void) |
252b5132 RH |
15026 | { |
15027 | /* initialize opcodes */ | |
15028 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 15029 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
15030 | } |
15031 | ||
15032 | long | |
17a2f251 | 15033 | md_pcrel_from (fixS *fixP) |
252b5132 | 15034 | { |
a7ebbfdf TS |
15035 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
15036 | switch (fixP->fx_r_type) | |
15037 | { | |
df58fc94 RS |
15038 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
15039 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
15040 | /* Return the address of the delay slot. */ | |
15041 | return addr + 2; | |
15042 | ||
15043 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
15044 | case BFD_RELOC_MICROMIPS_JMP: | |
a7ebbfdf TS |
15045 | case BFD_RELOC_16_PCREL_S2: |
15046 | case BFD_RELOC_MIPS_JMP: | |
15047 | /* Return the address of the delay slot. */ | |
15048 | return addr + 4; | |
df58fc94 | 15049 | |
a7ebbfdf | 15050 | default: |
58ea3d6a | 15051 | /* We have no relocation type for PC relative MIPS16 instructions. */ |
64817874 TS |
15052 | if (fixP->fx_addsy && S_GET_SEGMENT (fixP->fx_addsy) != now_seg) |
15053 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15054 | _("PC relative MIPS16 instruction references a different section")); | |
a7ebbfdf TS |
15055 | return addr; |
15056 | } | |
252b5132 RH |
15057 | } |
15058 | ||
252b5132 RH |
15059 | /* This is called before the symbol table is processed. In order to |
15060 | work with gcc when using mips-tfile, we must keep all local labels. | |
15061 | However, in other cases, we want to discard them. If we were | |
15062 | called with -g, but we didn't see any debugging information, it may | |
15063 | mean that gcc is smuggling debugging information through to | |
15064 | mips-tfile, in which case we must generate all local labels. */ | |
15065 | ||
15066 | void | |
17a2f251 | 15067 | mips_frob_file_before_adjust (void) |
252b5132 RH |
15068 | { |
15069 | #ifndef NO_ECOFF_DEBUGGING | |
15070 | if (ECOFF_DEBUGGING | |
15071 | && mips_debug != 0 | |
15072 | && ! ecoff_debugging_seen) | |
15073 | flag_keep_locals = 1; | |
15074 | #endif | |
15075 | } | |
15076 | ||
3b91255e | 15077 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 15078 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
15079 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
15080 | relocation operators. | |
15081 | ||
15082 | For our purposes, a %lo() expression matches a %got() or %hi() | |
15083 | expression if: | |
15084 | ||
15085 | (a) it refers to the same symbol; and | |
15086 | (b) the offset applied in the %lo() expression is no lower than | |
15087 | the offset applied in the %got() or %hi(). | |
15088 | ||
15089 | (b) allows us to cope with code like: | |
15090 | ||
15091 | lui $4,%hi(foo) | |
15092 | lh $4,%lo(foo+2)($4) | |
15093 | ||
15094 | ...which is legal on RELA targets, and has a well-defined behaviour | |
15095 | if the user knows that adding 2 to "foo" will not induce a carry to | |
15096 | the high 16 bits. | |
15097 | ||
15098 | When several %lo()s match a particular %got() or %hi(), we use the | |
15099 | following rules to distinguish them: | |
15100 | ||
15101 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
15102 | higher offsets. | |
15103 | ||
15104 | (2) %lo()s with no matching %got() or %hi() are better than those | |
15105 | that already have a matching %got() or %hi(). | |
15106 | ||
15107 | (3) later %lo()s are better than earlier %lo()s. | |
15108 | ||
15109 | These rules are applied in order. | |
15110 | ||
15111 | (1) means, among other things, that %lo()s with identical offsets are | |
15112 | chosen if they exist. | |
15113 | ||
15114 | (2) means that we won't associate several high-part relocations with | |
15115 | the same low-part relocation unless there's no alternative. Having | |
15116 | several high parts for the same low part is a GNU extension; this rule | |
15117 | allows careful users to avoid it. | |
15118 | ||
15119 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
15120 | with the last high-part relocation being at the front of the list. | |
15121 | It therefore makes sense to choose the last matching low-part | |
15122 | relocation, all other things being equal. It's also easier | |
15123 | to code that way. */ | |
252b5132 RH |
15124 | |
15125 | void | |
17a2f251 | 15126 | mips_frob_file (void) |
252b5132 RH |
15127 | { |
15128 | struct mips_hi_fixup *l; | |
35903be0 | 15129 | bfd_reloc_code_real_type looking_for_rtype = BFD_RELOC_UNUSED; |
252b5132 RH |
15130 | |
15131 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
15132 | { | |
15133 | segment_info_type *seginfo; | |
3b91255e RS |
15134 | bfd_boolean matched_lo_p; |
15135 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 15136 | |
9c2799c2 | 15137 | gas_assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 15138 | |
5919d012 RS |
15139 | /* If a GOT16 relocation turns out to be against a global symbol, |
15140 | there isn't supposed to be a matching LO. */ | |
738e5348 | 15141 | if (got16_reloc_p (l->fixp->fx_r_type) |
5919d012 RS |
15142 | && !pic_need_relax (l->fixp->fx_addsy, l->seg)) |
15143 | continue; | |
15144 | ||
15145 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
15146 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
15147 | continue; |
15148 | ||
252b5132 | 15149 | seginfo = seg_info (l->seg); |
252b5132 | 15150 | |
3b91255e RS |
15151 | /* Set HI_POS to the position of this relocation in the chain. |
15152 | Set LO_POS to the position of the chosen low-part relocation. | |
15153 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
15154 | relocation that matches an immediately-preceding high-part | |
15155 | relocation. */ | |
15156 | hi_pos = NULL; | |
15157 | lo_pos = NULL; | |
15158 | matched_lo_p = FALSE; | |
738e5348 | 15159 | looking_for_rtype = matching_lo_reloc (l->fixp->fx_r_type); |
35903be0 | 15160 | |
3b91255e RS |
15161 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) |
15162 | { | |
15163 | if (*pos == l->fixp) | |
15164 | hi_pos = pos; | |
15165 | ||
35903be0 | 15166 | if ((*pos)->fx_r_type == looking_for_rtype |
30cfc97a | 15167 | && symbol_same_p ((*pos)->fx_addsy, l->fixp->fx_addsy) |
3b91255e RS |
15168 | && (*pos)->fx_offset >= l->fixp->fx_offset |
15169 | && (lo_pos == NULL | |
15170 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
15171 | || (!matched_lo_p | |
15172 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
15173 | lo_pos = pos; | |
15174 | ||
15175 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
15176 | && fixup_has_matching_lo_p (*pos)); | |
15177 | } | |
15178 | ||
15179 | /* If we found a match, remove the high-part relocation from its | |
15180 | current position and insert it before the low-part relocation. | |
15181 | Make the offsets match so that fixup_has_matching_lo_p() | |
15182 | will return true. | |
15183 | ||
15184 | We don't warn about unmatched high-part relocations since some | |
15185 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
15186 | instructions. */ | |
15187 | if (lo_pos != NULL) | |
15188 | { | |
15189 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
15190 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 15191 | { |
3b91255e RS |
15192 | *hi_pos = l->fixp->fx_next; |
15193 | l->fixp->fx_next = *lo_pos; | |
15194 | *lo_pos = l->fixp; | |
252b5132 | 15195 | } |
252b5132 RH |
15196 | } |
15197 | } | |
15198 | } | |
15199 | ||
3e722fb5 | 15200 | /* We may have combined relocations without symbols in the N32/N64 ABI. |
f6688943 | 15201 | We have to prevent gas from dropping them. */ |
252b5132 | 15202 | |
252b5132 | 15203 | int |
17a2f251 | 15204 | mips_force_relocation (fixS *fixp) |
252b5132 | 15205 | { |
ae6063d4 | 15206 | if (generic_force_reloc (fixp)) |
252b5132 RH |
15207 | return 1; |
15208 | ||
df58fc94 RS |
15209 | /* We want to keep BFD_RELOC_MICROMIPS_*_PCREL_S1 relocation, |
15210 | so that the linker relaxation can update targets. */ | |
15211 | if (fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
15212 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
15213 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1) | |
15214 | return 1; | |
15215 | ||
f6688943 TS |
15216 | if (HAVE_NEWABI |
15217 | && S_GET_SEGMENT (fixp->fx_addsy) == bfd_abs_section_ptr | |
15218 | && (fixp->fx_r_type == BFD_RELOC_MIPS_SUB | |
738e5348 RS |
15219 | || hi16_reloc_p (fixp->fx_r_type) |
15220 | || lo16_reloc_p (fixp->fx_r_type))) | |
f6688943 TS |
15221 | return 1; |
15222 | ||
3e722fb5 | 15223 | return 0; |
252b5132 RH |
15224 | } |
15225 | ||
15226 | /* Apply a fixup to the object file. */ | |
15227 | ||
94f592af | 15228 | void |
55cf6793 | 15229 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 15230 | { |
874e8986 | 15231 | bfd_byte *buf; |
98aa84af | 15232 | long insn; |
a7ebbfdf | 15233 | reloc_howto_type *howto; |
252b5132 | 15234 | |
a7ebbfdf TS |
15235 | /* We ignore generic BFD relocations we don't know about. */ |
15236 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
15237 | if (! howto) | |
15238 | return; | |
65551fa4 | 15239 | |
df58fc94 RS |
15240 | gas_assert (fixP->fx_size == 2 |
15241 | || fixP->fx_size == 4 | |
90ecf173 MR |
15242 | || fixP->fx_r_type == BFD_RELOC_16 |
15243 | || fixP->fx_r_type == BFD_RELOC_64 | |
15244 | || fixP->fx_r_type == BFD_RELOC_CTOR | |
15245 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
df58fc94 | 15246 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_SUB |
90ecf173 MR |
15247 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
15248 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY | |
15249 | || fixP->fx_r_type == BFD_RELOC_MIPS_TLS_DTPREL64); | |
252b5132 | 15250 | |
a7ebbfdf | 15251 | buf = (bfd_byte *) (fixP->fx_frag->fr_literal + fixP->fx_where); |
252b5132 | 15252 | |
df58fc94 RS |
15253 | gas_assert (!fixP->fx_pcrel || fixP->fx_r_type == BFD_RELOC_16_PCREL_S2 |
15254 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
15255 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
15256 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
b1dca8ee RS |
15257 | |
15258 | /* Don't treat parts of a composite relocation as done. There are two | |
15259 | reasons for this: | |
15260 | ||
15261 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
15262 | should nevertheless be emitted if the first part is. | |
15263 | ||
15264 | (2) In normal usage, composite relocations are never assembly-time | |
15265 | constants. The easiest way of dealing with the pathological | |
15266 | exceptions is to generate a relocation against STN_UNDEF and | |
15267 | leave everything up to the linker. */ | |
3994f87e | 15268 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
15269 | fixP->fx_done = 1; |
15270 | ||
15271 | switch (fixP->fx_r_type) | |
15272 | { | |
3f98094e DJ |
15273 | case BFD_RELOC_MIPS_TLS_GD: |
15274 | case BFD_RELOC_MIPS_TLS_LDM: | |
741d6ea8 JM |
15275 | case BFD_RELOC_MIPS_TLS_DTPREL32: |
15276 | case BFD_RELOC_MIPS_TLS_DTPREL64: | |
3f98094e DJ |
15277 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: |
15278 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
15279 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
15280 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: | |
15281 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
df58fc94 RS |
15282 | case BFD_RELOC_MICROMIPS_TLS_GD: |
15283 | case BFD_RELOC_MICROMIPS_TLS_LDM: | |
15284 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16: | |
15285 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16: | |
15286 | case BFD_RELOC_MICROMIPS_TLS_GOTTPREL: | |
15287 | case BFD_RELOC_MICROMIPS_TLS_TPREL_HI16: | |
15288 | case BFD_RELOC_MICROMIPS_TLS_TPREL_LO16: | |
3f98094e DJ |
15289 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
15290 | /* fall through */ | |
15291 | ||
252b5132 | 15292 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
15293 | case BFD_RELOC_MIPS_SHIFT5: |
15294 | case BFD_RELOC_MIPS_SHIFT6: | |
15295 | case BFD_RELOC_MIPS_GOT_DISP: | |
15296 | case BFD_RELOC_MIPS_GOT_PAGE: | |
15297 | case BFD_RELOC_MIPS_GOT_OFST: | |
15298 | case BFD_RELOC_MIPS_SUB: | |
15299 | case BFD_RELOC_MIPS_INSERT_A: | |
15300 | case BFD_RELOC_MIPS_INSERT_B: | |
15301 | case BFD_RELOC_MIPS_DELETE: | |
15302 | case BFD_RELOC_MIPS_HIGHEST: | |
15303 | case BFD_RELOC_MIPS_HIGHER: | |
15304 | case BFD_RELOC_MIPS_SCN_DISP: | |
15305 | case BFD_RELOC_MIPS_REL16: | |
15306 | case BFD_RELOC_MIPS_RELGOT: | |
15307 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
15308 | case BFD_RELOC_HI16: |
15309 | case BFD_RELOC_HI16_S: | |
cdf6fd85 | 15310 | case BFD_RELOC_GPREL16: |
252b5132 RH |
15311 | case BFD_RELOC_MIPS_LITERAL: |
15312 | case BFD_RELOC_MIPS_CALL16: | |
15313 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 15314 | case BFD_RELOC_GPREL32: |
252b5132 RH |
15315 | case BFD_RELOC_MIPS_GOT_HI16: |
15316 | case BFD_RELOC_MIPS_GOT_LO16: | |
15317 | case BFD_RELOC_MIPS_CALL_HI16: | |
15318 | case BFD_RELOC_MIPS_CALL_LO16: | |
15319 | case BFD_RELOC_MIPS16_GPREL: | |
738e5348 RS |
15320 | case BFD_RELOC_MIPS16_GOT16: |
15321 | case BFD_RELOC_MIPS16_CALL16: | |
d6f16593 MR |
15322 | case BFD_RELOC_MIPS16_HI16: |
15323 | case BFD_RELOC_MIPS16_HI16_S: | |
252b5132 | 15324 | case BFD_RELOC_MIPS16_JMP: |
df58fc94 RS |
15325 | case BFD_RELOC_MICROMIPS_JMP: |
15326 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
15327 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
15328 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
15329 | case BFD_RELOC_MICROMIPS_SUB: | |
15330 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
15331 | case BFD_RELOC_MICROMIPS_HIGHER: | |
15332 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
15333 | case BFD_RELOC_MICROMIPS_JALR: | |
15334 | case BFD_RELOC_MICROMIPS_HI16: | |
15335 | case BFD_RELOC_MICROMIPS_HI16_S: | |
15336 | case BFD_RELOC_MICROMIPS_GPREL16: | |
15337 | case BFD_RELOC_MICROMIPS_LITERAL: | |
15338 | case BFD_RELOC_MICROMIPS_CALL16: | |
15339 | case BFD_RELOC_MICROMIPS_GOT16: | |
15340 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
15341 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
15342 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
15343 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
54f4ddb3 | 15344 | /* Nothing needed to do. The value comes from the reloc entry. */ |
252b5132 RH |
15345 | break; |
15346 | ||
252b5132 RH |
15347 | case BFD_RELOC_64: |
15348 | /* This is handled like BFD_RELOC_32, but we output a sign | |
15349 | extended value if we are only 32 bits. */ | |
3e722fb5 | 15350 | if (fixP->fx_done) |
252b5132 RH |
15351 | { |
15352 | if (8 <= sizeof (valueT)) | |
2132e3a3 | 15353 | md_number_to_chars ((char *) buf, *valP, 8); |
252b5132 RH |
15354 | else |
15355 | { | |
a7ebbfdf | 15356 | valueT hiv; |
252b5132 | 15357 | |
a7ebbfdf | 15358 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
15359 | hiv = 0xffffffff; |
15360 | else | |
15361 | hiv = 0; | |
b215186b | 15362 | md_number_to_chars ((char *)(buf + (target_big_endian ? 4 : 0)), |
a7ebbfdf | 15363 | *valP, 4); |
b215186b | 15364 | md_number_to_chars ((char *)(buf + (target_big_endian ? 0 : 4)), |
a7ebbfdf | 15365 | hiv, 4); |
252b5132 RH |
15366 | } |
15367 | } | |
15368 | break; | |
15369 | ||
056350c6 | 15370 | case BFD_RELOC_RVA: |
252b5132 | 15371 | case BFD_RELOC_32: |
252b5132 RH |
15372 | case BFD_RELOC_16: |
15373 | /* If we are deleting this reloc entry, we must fill in the | |
54f4ddb3 TS |
15374 | value now. This can happen if we have a .word which is not |
15375 | resolved when it appears but is later defined. */ | |
252b5132 | 15376 | if (fixP->fx_done) |
54f4ddb3 | 15377 | md_number_to_chars ((char *) buf, *valP, fixP->fx_size); |
252b5132 RH |
15378 | break; |
15379 | ||
15380 | case BFD_RELOC_LO16: | |
d6f16593 | 15381 | case BFD_RELOC_MIPS16_LO16: |
df58fc94 | 15382 | case BFD_RELOC_MICROMIPS_LO16: |
3e722fb5 CD |
15383 | /* FIXME: Now that embedded-PIC is gone, some of this code/comment |
15384 | may be safe to remove, but if so it's not obvious. */ | |
252b5132 RH |
15385 | /* When handling an embedded PIC switch statement, we can wind |
15386 | up deleting a LO16 reloc. See the 'o' case in mips_ip. */ | |
15387 | if (fixP->fx_done) | |
15388 | { | |
a7ebbfdf | 15389 | if (*valP + 0x8000 > 0xffff) |
252b5132 RH |
15390 | as_bad_where (fixP->fx_file, fixP->fx_line, |
15391 | _("relocation overflow")); | |
df58fc94 RS |
15392 | /* 32-bit microMIPS instructions are divided into two halfwords. |
15393 | Relocations always refer to the second halfword, regardless | |
15394 | of endianness. */ | |
15395 | if (target_big_endian || fixP->fx_r_type == BFD_RELOC_MICROMIPS_LO16) | |
252b5132 | 15396 | buf += 2; |
2132e3a3 | 15397 | md_number_to_chars ((char *) buf, *valP, 2); |
252b5132 RH |
15398 | } |
15399 | break; | |
15400 | ||
15401 | case BFD_RELOC_16_PCREL_S2: | |
a7ebbfdf | 15402 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 15403 | as_bad_where (fixP->fx_file, fixP->fx_line, |
bad36eac | 15404 | _("Branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 15405 | |
54f4ddb3 TS |
15406 | /* We need to save the bits in the instruction since fixup_segment() |
15407 | might be deleting the relocation entry (i.e., a branch within | |
15408 | the current segment). */ | |
a7ebbfdf | 15409 | if (! fixP->fx_done) |
bb2d6cd7 | 15410 | break; |
252b5132 | 15411 | |
54f4ddb3 | 15412 | /* Update old instruction data. */ |
252b5132 RH |
15413 | if (target_big_endian) |
15414 | insn = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
15415 | else | |
15416 | insn = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | |
15417 | ||
a7ebbfdf TS |
15418 | if (*valP + 0x20000 <= 0x3ffff) |
15419 | { | |
15420 | insn |= (*valP >> 2) & 0xffff; | |
2132e3a3 | 15421 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
15422 | } |
15423 | else if (mips_pic == NO_PIC | |
15424 | && fixP->fx_done | |
15425 | && fixP->fx_frag->fr_address >= text_section->vma | |
15426 | && (fixP->fx_frag->fr_address | |
587aac4e | 15427 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
15428 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
15429 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
15430 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
15431 | { |
15432 | /* The branch offset is too large. If this is an | |
15433 | unconditional branch, and we are not generating PIC code, | |
15434 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
15435 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
15436 | insn = 0x0c000000; /* jal */ | |
252b5132 | 15437 | else |
a7ebbfdf TS |
15438 | insn = 0x08000000; /* j */ |
15439 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
15440 | fixP->fx_done = 0; | |
15441 | fixP->fx_addsy = section_symbol (text_section); | |
15442 | *valP += md_pcrel_from (fixP); | |
2132e3a3 | 15443 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
15444 | } |
15445 | else | |
15446 | { | |
15447 | /* If we got here, we have branch-relaxation disabled, | |
15448 | and there's nothing we can do to fix this instruction | |
15449 | without turning it into a longer sequence. */ | |
15450 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15451 | _("Branch out of range")); | |
252b5132 | 15452 | } |
252b5132 RH |
15453 | break; |
15454 | ||
df58fc94 RS |
15455 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
15456 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
15457 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
15458 | /* We adjust the offset back to even. */ | |
15459 | if ((*valP & 0x1) != 0) | |
15460 | --(*valP); | |
15461 | ||
15462 | if (! fixP->fx_done) | |
15463 | break; | |
15464 | ||
15465 | /* Should never visit here, because we keep the relocation. */ | |
15466 | abort (); | |
15467 | break; | |
15468 | ||
252b5132 RH |
15469 | case BFD_RELOC_VTABLE_INHERIT: |
15470 | fixP->fx_done = 0; | |
15471 | if (fixP->fx_addsy | |
15472 | && !S_IS_DEFINED (fixP->fx_addsy) | |
15473 | && !S_IS_WEAK (fixP->fx_addsy)) | |
15474 | S_SET_WEAK (fixP->fx_addsy); | |
15475 | break; | |
15476 | ||
15477 | case BFD_RELOC_VTABLE_ENTRY: | |
15478 | fixP->fx_done = 0; | |
15479 | break; | |
15480 | ||
15481 | default: | |
15482 | internalError (); | |
15483 | } | |
a7ebbfdf TS |
15484 | |
15485 | /* Remember value for tc_gen_reloc. */ | |
15486 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
15487 | } |
15488 | ||
252b5132 | 15489 | static symbolS * |
17a2f251 | 15490 | get_symbol (void) |
252b5132 RH |
15491 | { |
15492 | int c; | |
15493 | char *name; | |
15494 | symbolS *p; | |
15495 | ||
15496 | name = input_line_pointer; | |
15497 | c = get_symbol_end (); | |
15498 | p = (symbolS *) symbol_find_or_make (name); | |
15499 | *input_line_pointer = c; | |
15500 | return p; | |
15501 | } | |
15502 | ||
742a56fe RS |
15503 | /* Align the current frag to a given power of two. If a particular |
15504 | fill byte should be used, FILL points to an integer that contains | |
15505 | that byte, otherwise FILL is null. | |
15506 | ||
15507 | The MIPS assembler also automatically adjusts any preceding | |
15508 | label. */ | |
252b5132 RH |
15509 | |
15510 | static void | |
742a56fe | 15511 | mips_align (int to, int *fill, symbolS *label) |
252b5132 | 15512 | { |
7d10b47d | 15513 | mips_emit_delays (); |
df58fc94 | 15514 | mips_record_compressed_mode (); |
742a56fe RS |
15515 | if (fill == NULL && subseg_text_p (now_seg)) |
15516 | frag_align_code (to, 0); | |
15517 | else | |
15518 | frag_align (to, fill ? *fill : 0, 0); | |
252b5132 RH |
15519 | record_alignment (now_seg, to); |
15520 | if (label != NULL) | |
15521 | { | |
9c2799c2 | 15522 | gas_assert (S_GET_SEGMENT (label) == now_seg); |
49309057 | 15523 | symbol_set_frag (label, frag_now); |
252b5132 RH |
15524 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
15525 | } | |
15526 | } | |
15527 | ||
15528 | /* Align to a given power of two. .align 0 turns off the automatic | |
15529 | alignment used by the data creating pseudo-ops. */ | |
15530 | ||
15531 | static void | |
17a2f251 | 15532 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 15533 | { |
742a56fe | 15534 | int temp, fill_value, *fill_ptr; |
49954fb4 | 15535 | long max_alignment = 28; |
252b5132 | 15536 | |
54f4ddb3 | 15537 | /* o Note that the assembler pulls down any immediately preceding label |
252b5132 | 15538 | to the aligned address. |
54f4ddb3 | 15539 | o It's not documented but auto alignment is reinstated by |
252b5132 | 15540 | a .align pseudo instruction. |
54f4ddb3 | 15541 | o Note also that after auto alignment is turned off the mips assembler |
252b5132 | 15542 | issues an error on attempt to assemble an improperly aligned data item. |
54f4ddb3 | 15543 | We don't. */ |
252b5132 RH |
15544 | |
15545 | temp = get_absolute_expression (); | |
15546 | if (temp > max_alignment) | |
15547 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
15548 | else if (temp < 0) | |
15549 | { | |
15550 | as_warn (_("Alignment negative: 0 assumed.")); | |
15551 | temp = 0; | |
15552 | } | |
15553 | if (*input_line_pointer == ',') | |
15554 | { | |
f9419b05 | 15555 | ++input_line_pointer; |
742a56fe RS |
15556 | fill_value = get_absolute_expression (); |
15557 | fill_ptr = &fill_value; | |
252b5132 RH |
15558 | } |
15559 | else | |
742a56fe | 15560 | fill_ptr = 0; |
252b5132 RH |
15561 | if (temp) |
15562 | { | |
a8dbcb85 TS |
15563 | segment_info_type *si = seg_info (now_seg); |
15564 | struct insn_label_list *l = si->label_list; | |
54f4ddb3 | 15565 | /* Auto alignment should be switched on by next section change. */ |
252b5132 | 15566 | auto_align = 1; |
742a56fe | 15567 | mips_align (temp, fill_ptr, l != NULL ? l->label : NULL); |
252b5132 RH |
15568 | } |
15569 | else | |
15570 | { | |
15571 | auto_align = 0; | |
15572 | } | |
15573 | ||
15574 | demand_empty_rest_of_line (); | |
15575 | } | |
15576 | ||
252b5132 | 15577 | static void |
17a2f251 | 15578 | s_change_sec (int sec) |
252b5132 RH |
15579 | { |
15580 | segT seg; | |
15581 | ||
252b5132 RH |
15582 | #ifdef OBJ_ELF |
15583 | /* The ELF backend needs to know that we are changing sections, so | |
15584 | that .previous works correctly. We could do something like check | |
b6ff326e | 15585 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
15586 | as it would not be appropriate to use it in the section changing |
15587 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
15588 | This should be cleaner, somehow. */ | |
f43abd2b TS |
15589 | if (IS_ELF) |
15590 | obj_elf_section_change_hook (); | |
252b5132 RH |
15591 | #endif |
15592 | ||
7d10b47d | 15593 | mips_emit_delays (); |
6a32d874 | 15594 | |
252b5132 RH |
15595 | switch (sec) |
15596 | { | |
15597 | case 't': | |
15598 | s_text (0); | |
15599 | break; | |
15600 | case 'd': | |
15601 | s_data (0); | |
15602 | break; | |
15603 | case 'b': | |
15604 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
15605 | demand_empty_rest_of_line (); | |
15606 | break; | |
15607 | ||
15608 | case 'r': | |
4d0d148d TS |
15609 | seg = subseg_new (RDATA_SECTION_NAME, |
15610 | (subsegT) get_absolute_expression ()); | |
f43abd2b | 15611 | if (IS_ELF) |
252b5132 | 15612 | { |
4d0d148d TS |
15613 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
15614 | | SEC_READONLY | SEC_RELOC | |
15615 | | SEC_DATA)); | |
c41e87e3 | 15616 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 15617 | record_alignment (seg, 4); |
252b5132 | 15618 | } |
4d0d148d | 15619 | demand_empty_rest_of_line (); |
252b5132 RH |
15620 | break; |
15621 | ||
15622 | case 's': | |
4d0d148d | 15623 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
f43abd2b | 15624 | if (IS_ELF) |
252b5132 | 15625 | { |
4d0d148d TS |
15626 | bfd_set_section_flags (stdoutput, seg, |
15627 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
c41e87e3 | 15628 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 15629 | record_alignment (seg, 4); |
252b5132 | 15630 | } |
4d0d148d TS |
15631 | demand_empty_rest_of_line (); |
15632 | break; | |
998b3c36 MR |
15633 | |
15634 | case 'B': | |
15635 | seg = subseg_new (".sbss", (subsegT) get_absolute_expression ()); | |
15636 | if (IS_ELF) | |
15637 | { | |
15638 | bfd_set_section_flags (stdoutput, seg, SEC_ALLOC); | |
15639 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
15640 | record_alignment (seg, 4); | |
15641 | } | |
15642 | demand_empty_rest_of_line (); | |
15643 | break; | |
252b5132 RH |
15644 | } |
15645 | ||
15646 | auto_align = 1; | |
15647 | } | |
b34976b6 | 15648 | |
cca86cc8 | 15649 | void |
17a2f251 | 15650 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 15651 | { |
7ed4a06a | 15652 | #ifdef OBJ_ELF |
cca86cc8 SC |
15653 | char *section_name; |
15654 | char c; | |
684022ea | 15655 | char next_c = 0; |
cca86cc8 SC |
15656 | int section_type; |
15657 | int section_flag; | |
15658 | int section_entry_size; | |
15659 | int section_alignment; | |
b34976b6 | 15660 | |
f43abd2b | 15661 | if (!IS_ELF) |
7ed4a06a TS |
15662 | return; |
15663 | ||
cca86cc8 SC |
15664 | section_name = input_line_pointer; |
15665 | c = get_symbol_end (); | |
a816d1ed AO |
15666 | if (c) |
15667 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 15668 | |
4cf0dd0d TS |
15669 | /* Do we have .section Name<,"flags">? */ |
15670 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 15671 | { |
4cf0dd0d TS |
15672 | /* just after name is now '\0'. */ |
15673 | *input_line_pointer = c; | |
cca86cc8 SC |
15674 | input_line_pointer = section_name; |
15675 | obj_elf_section (ignore); | |
15676 | return; | |
15677 | } | |
15678 | input_line_pointer++; | |
15679 | ||
15680 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
15681 | if (c == ',') | |
15682 | section_type = get_absolute_expression (); | |
15683 | else | |
15684 | section_type = 0; | |
15685 | if (*input_line_pointer++ == ',') | |
15686 | section_flag = get_absolute_expression (); | |
15687 | else | |
15688 | section_flag = 0; | |
15689 | if (*input_line_pointer++ == ',') | |
15690 | section_entry_size = get_absolute_expression (); | |
15691 | else | |
15692 | section_entry_size = 0; | |
15693 | if (*input_line_pointer++ == ',') | |
15694 | section_alignment = get_absolute_expression (); | |
15695 | else | |
15696 | section_alignment = 0; | |
87975d2a AM |
15697 | /* FIXME: really ignore? */ |
15698 | (void) section_alignment; | |
cca86cc8 | 15699 | |
a816d1ed AO |
15700 | section_name = xstrdup (section_name); |
15701 | ||
8ab8a5c8 RS |
15702 | /* When using the generic form of .section (as implemented by obj-elf.c), |
15703 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
15704 | traditionally had to fall back on the more common @progbits instead. | |
15705 | ||
15706 | There's nothing really harmful in this, since bfd will correct | |
15707 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 15708 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
15709 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
15710 | ||
15711 | Even so, we shouldn't force users of the MIPS .section syntax to | |
15712 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
15713 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
15714 | generic type-checking code. */ | |
15715 | if (section_type == SHT_MIPS_DWARF) | |
15716 | section_type = SHT_PROGBITS; | |
15717 | ||
cca86cc8 SC |
15718 | obj_elf_change_section (section_name, section_type, section_flag, |
15719 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
15720 | |
15721 | if (now_seg->name != section_name) | |
15722 | free (section_name); | |
7ed4a06a | 15723 | #endif /* OBJ_ELF */ |
cca86cc8 | 15724 | } |
252b5132 RH |
15725 | |
15726 | void | |
17a2f251 | 15727 | mips_enable_auto_align (void) |
252b5132 RH |
15728 | { |
15729 | auto_align = 1; | |
15730 | } | |
15731 | ||
15732 | static void | |
17a2f251 | 15733 | s_cons (int log_size) |
252b5132 | 15734 | { |
a8dbcb85 TS |
15735 | segment_info_type *si = seg_info (now_seg); |
15736 | struct insn_label_list *l = si->label_list; | |
252b5132 RH |
15737 | symbolS *label; |
15738 | ||
a8dbcb85 | 15739 | label = l != NULL ? l->label : NULL; |
7d10b47d | 15740 | mips_emit_delays (); |
252b5132 RH |
15741 | if (log_size > 0 && auto_align) |
15742 | mips_align (log_size, 0, label); | |
252b5132 | 15743 | cons (1 << log_size); |
a1facbec | 15744 | mips_clear_insn_labels (); |
252b5132 RH |
15745 | } |
15746 | ||
15747 | static void | |
17a2f251 | 15748 | s_float_cons (int type) |
252b5132 | 15749 | { |
a8dbcb85 TS |
15750 | segment_info_type *si = seg_info (now_seg); |
15751 | struct insn_label_list *l = si->label_list; | |
252b5132 RH |
15752 | symbolS *label; |
15753 | ||
a8dbcb85 | 15754 | label = l != NULL ? l->label : NULL; |
252b5132 | 15755 | |
7d10b47d | 15756 | mips_emit_delays (); |
252b5132 RH |
15757 | |
15758 | if (auto_align) | |
49309057 ILT |
15759 | { |
15760 | if (type == 'd') | |
15761 | mips_align (3, 0, label); | |
15762 | else | |
15763 | mips_align (2, 0, label); | |
15764 | } | |
252b5132 | 15765 | |
252b5132 | 15766 | float_cons (type); |
a1facbec | 15767 | mips_clear_insn_labels (); |
252b5132 RH |
15768 | } |
15769 | ||
15770 | /* Handle .globl. We need to override it because on Irix 5 you are | |
15771 | permitted to say | |
15772 | .globl foo .text | |
15773 | where foo is an undefined symbol, to mean that foo should be | |
15774 | considered to be the address of a function. */ | |
15775 | ||
15776 | static void | |
17a2f251 | 15777 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
15778 | { |
15779 | char *name; | |
15780 | int c; | |
15781 | symbolS *symbolP; | |
15782 | flagword flag; | |
15783 | ||
8a06b769 | 15784 | do |
252b5132 | 15785 | { |
8a06b769 | 15786 | name = input_line_pointer; |
252b5132 | 15787 | c = get_symbol_end (); |
8a06b769 TS |
15788 | symbolP = symbol_find_or_make (name); |
15789 | S_SET_EXTERNAL (symbolP); | |
15790 | ||
252b5132 | 15791 | *input_line_pointer = c; |
8a06b769 | 15792 | SKIP_WHITESPACE (); |
252b5132 | 15793 | |
8a06b769 TS |
15794 | /* On Irix 5, every global symbol that is not explicitly labelled as |
15795 | being a function is apparently labelled as being an object. */ | |
15796 | flag = BSF_OBJECT; | |
252b5132 | 15797 | |
8a06b769 TS |
15798 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
15799 | && (*input_line_pointer != ',')) | |
15800 | { | |
15801 | char *secname; | |
15802 | asection *sec; | |
15803 | ||
15804 | secname = input_line_pointer; | |
15805 | c = get_symbol_end (); | |
15806 | sec = bfd_get_section_by_name (stdoutput, secname); | |
15807 | if (sec == NULL) | |
15808 | as_bad (_("%s: no such section"), secname); | |
15809 | *input_line_pointer = c; | |
15810 | ||
15811 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
15812 | flag = BSF_FUNCTION; | |
15813 | } | |
15814 | ||
15815 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
15816 | ||
15817 | c = *input_line_pointer; | |
15818 | if (c == ',') | |
15819 | { | |
15820 | input_line_pointer++; | |
15821 | SKIP_WHITESPACE (); | |
15822 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
15823 | c = '\n'; | |
15824 | } | |
15825 | } | |
15826 | while (c == ','); | |
252b5132 | 15827 | |
252b5132 RH |
15828 | demand_empty_rest_of_line (); |
15829 | } | |
15830 | ||
15831 | static void | |
17a2f251 | 15832 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
15833 | { |
15834 | char *opt; | |
15835 | char c; | |
15836 | ||
15837 | opt = input_line_pointer; | |
15838 | c = get_symbol_end (); | |
15839 | ||
15840 | if (*opt == 'O') | |
15841 | { | |
15842 | /* FIXME: What does this mean? */ | |
15843 | } | |
15844 | else if (strncmp (opt, "pic", 3) == 0) | |
15845 | { | |
15846 | int i; | |
15847 | ||
15848 | i = atoi (opt + 3); | |
15849 | if (i == 0) | |
15850 | mips_pic = NO_PIC; | |
15851 | else if (i == 2) | |
143d77c5 | 15852 | { |
252b5132 | 15853 | mips_pic = SVR4_PIC; |
143d77c5 EC |
15854 | mips_abicalls = TRUE; |
15855 | } | |
252b5132 RH |
15856 | else |
15857 | as_bad (_(".option pic%d not supported"), i); | |
15858 | ||
4d0d148d | 15859 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
15860 | { |
15861 | if (g_switch_seen && g_switch_value != 0) | |
15862 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
15863 | g_switch_value = 0; | |
15864 | bfd_set_gp_size (stdoutput, 0); | |
15865 | } | |
15866 | } | |
15867 | else | |
15868 | as_warn (_("Unrecognized option \"%s\""), opt); | |
15869 | ||
15870 | *input_line_pointer = c; | |
15871 | demand_empty_rest_of_line (); | |
15872 | } | |
15873 | ||
15874 | /* This structure is used to hold a stack of .set values. */ | |
15875 | ||
e972090a NC |
15876 | struct mips_option_stack |
15877 | { | |
252b5132 RH |
15878 | struct mips_option_stack *next; |
15879 | struct mips_set_options options; | |
15880 | }; | |
15881 | ||
15882 | static struct mips_option_stack *mips_opts_stack; | |
15883 | ||
15884 | /* Handle the .set pseudo-op. */ | |
15885 | ||
15886 | static void | |
17a2f251 | 15887 | s_mipsset (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
15888 | { |
15889 | char *name = input_line_pointer, ch; | |
15890 | ||
15891 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 15892 | ++input_line_pointer; |
252b5132 RH |
15893 | ch = *input_line_pointer; |
15894 | *input_line_pointer = '\0'; | |
15895 | ||
15896 | if (strcmp (name, "reorder") == 0) | |
15897 | { | |
7d10b47d RS |
15898 | if (mips_opts.noreorder) |
15899 | end_noreorder (); | |
252b5132 RH |
15900 | } |
15901 | else if (strcmp (name, "noreorder") == 0) | |
15902 | { | |
7d10b47d RS |
15903 | if (!mips_opts.noreorder) |
15904 | start_noreorder (); | |
252b5132 | 15905 | } |
741fe287 MR |
15906 | else if (strncmp (name, "at=", 3) == 0) |
15907 | { | |
15908 | char *s = name + 3; | |
15909 | ||
15910 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, &mips_opts.at)) | |
15911 | as_bad (_("Unrecognized register name `%s'"), s); | |
15912 | } | |
252b5132 RH |
15913 | else if (strcmp (name, "at") == 0) |
15914 | { | |
741fe287 | 15915 | mips_opts.at = ATREG; |
252b5132 RH |
15916 | } |
15917 | else if (strcmp (name, "noat") == 0) | |
15918 | { | |
741fe287 | 15919 | mips_opts.at = ZERO; |
252b5132 RH |
15920 | } |
15921 | else if (strcmp (name, "macro") == 0) | |
15922 | { | |
15923 | mips_opts.warn_about_macros = 0; | |
15924 | } | |
15925 | else if (strcmp (name, "nomacro") == 0) | |
15926 | { | |
15927 | if (mips_opts.noreorder == 0) | |
15928 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
15929 | mips_opts.warn_about_macros = 1; | |
15930 | } | |
15931 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
15932 | { | |
15933 | mips_opts.nomove = 0; | |
15934 | } | |
15935 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
15936 | { | |
15937 | mips_opts.nomove = 1; | |
15938 | } | |
15939 | else if (strcmp (name, "bopt") == 0) | |
15940 | { | |
15941 | mips_opts.nobopt = 0; | |
15942 | } | |
15943 | else if (strcmp (name, "nobopt") == 0) | |
15944 | { | |
15945 | mips_opts.nobopt = 1; | |
15946 | } | |
ad3fea08 TS |
15947 | else if (strcmp (name, "gp=default") == 0) |
15948 | mips_opts.gp32 = file_mips_gp32; | |
15949 | else if (strcmp (name, "gp=32") == 0) | |
15950 | mips_opts.gp32 = 1; | |
15951 | else if (strcmp (name, "gp=64") == 0) | |
15952 | { | |
15953 | if (!ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
20203fb9 | 15954 | as_warn (_("%s isa does not support 64-bit registers"), |
ad3fea08 TS |
15955 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
15956 | mips_opts.gp32 = 0; | |
15957 | } | |
15958 | else if (strcmp (name, "fp=default") == 0) | |
15959 | mips_opts.fp32 = file_mips_fp32; | |
15960 | else if (strcmp (name, "fp=32") == 0) | |
15961 | mips_opts.fp32 = 1; | |
15962 | else if (strcmp (name, "fp=64") == 0) | |
15963 | { | |
15964 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
20203fb9 | 15965 | as_warn (_("%s isa does not support 64-bit floating point registers"), |
ad3fea08 TS |
15966 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
15967 | mips_opts.fp32 = 0; | |
15968 | } | |
037b32b9 AN |
15969 | else if (strcmp (name, "softfloat") == 0) |
15970 | mips_opts.soft_float = 1; | |
15971 | else if (strcmp (name, "hardfloat") == 0) | |
15972 | mips_opts.soft_float = 0; | |
15973 | else if (strcmp (name, "singlefloat") == 0) | |
15974 | mips_opts.single_float = 1; | |
15975 | else if (strcmp (name, "doublefloat") == 0) | |
15976 | mips_opts.single_float = 0; | |
252b5132 RH |
15977 | else if (strcmp (name, "mips16") == 0 |
15978 | || strcmp (name, "MIPS-16") == 0) | |
df58fc94 RS |
15979 | { |
15980 | if (mips_opts.micromips == 1) | |
15981 | as_fatal (_("`mips16' cannot be used with `micromips'")); | |
15982 | mips_opts.mips16 = 1; | |
15983 | } | |
252b5132 RH |
15984 | else if (strcmp (name, "nomips16") == 0 |
15985 | || strcmp (name, "noMIPS-16") == 0) | |
15986 | mips_opts.mips16 = 0; | |
df58fc94 RS |
15987 | else if (strcmp (name, "micromips") == 0) |
15988 | { | |
15989 | if (mips_opts.mips16 == 1) | |
15990 | as_fatal (_("`micromips' cannot be used with `mips16'")); | |
15991 | mips_opts.micromips = 1; | |
15992 | } | |
15993 | else if (strcmp (name, "nomicromips") == 0) | |
15994 | mips_opts.micromips = 0; | |
e16bfa71 TS |
15995 | else if (strcmp (name, "smartmips") == 0) |
15996 | { | |
ad3fea08 | 15997 | if (!ISA_SUPPORTS_SMARTMIPS) |
20203fb9 | 15998 | as_warn (_("%s ISA does not support SmartMIPS ASE"), |
e16bfa71 TS |
15999 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16000 | mips_opts.ase_smartmips = 1; | |
16001 | } | |
16002 | else if (strcmp (name, "nosmartmips") == 0) | |
16003 | mips_opts.ase_smartmips = 0; | |
1f25f5d3 CD |
16004 | else if (strcmp (name, "mips3d") == 0) |
16005 | mips_opts.ase_mips3d = 1; | |
16006 | else if (strcmp (name, "nomips3d") == 0) | |
16007 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
16008 | else if (strcmp (name, "mdmx") == 0) |
16009 | mips_opts.ase_mdmx = 1; | |
16010 | else if (strcmp (name, "nomdmx") == 0) | |
16011 | mips_opts.ase_mdmx = 0; | |
74cd071d | 16012 | else if (strcmp (name, "dsp") == 0) |
ad3fea08 TS |
16013 | { |
16014 | if (!ISA_SUPPORTS_DSP_ASE) | |
20203fb9 | 16015 | as_warn (_("%s ISA does not support DSP ASE"), |
ad3fea08 TS |
16016 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16017 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 16018 | mips_opts.ase_dspr2 = 0; |
ad3fea08 | 16019 | } |
74cd071d | 16020 | else if (strcmp (name, "nodsp") == 0) |
8b082fb1 TS |
16021 | { |
16022 | mips_opts.ase_dsp = 0; | |
16023 | mips_opts.ase_dspr2 = 0; | |
16024 | } | |
16025 | else if (strcmp (name, "dspr2") == 0) | |
16026 | { | |
16027 | if (!ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 | 16028 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
8b082fb1 TS |
16029 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16030 | mips_opts.ase_dspr2 = 1; | |
16031 | mips_opts.ase_dsp = 1; | |
16032 | } | |
16033 | else if (strcmp (name, "nodspr2") == 0) | |
16034 | { | |
16035 | mips_opts.ase_dspr2 = 0; | |
16036 | mips_opts.ase_dsp = 0; | |
16037 | } | |
ef2e4d86 | 16038 | else if (strcmp (name, "mt") == 0) |
ad3fea08 TS |
16039 | { |
16040 | if (!ISA_SUPPORTS_MT_ASE) | |
20203fb9 | 16041 | as_warn (_("%s ISA does not support MT ASE"), |
ad3fea08 TS |
16042 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16043 | mips_opts.ase_mt = 1; | |
16044 | } | |
ef2e4d86 CF |
16045 | else if (strcmp (name, "nomt") == 0) |
16046 | mips_opts.ase_mt = 0; | |
1a2c1fad | 16047 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 16048 | { |
af7ee8bf | 16049 | int reset = 0; |
252b5132 | 16050 | |
1a2c1fad CD |
16051 | /* Permit the user to change the ISA and architecture on the fly. |
16052 | Needless to say, misuse can cause serious problems. */ | |
81a21e38 | 16053 | if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) |
af7ee8bf CD |
16054 | { |
16055 | reset = 1; | |
16056 | mips_opts.isa = file_mips_isa; | |
1a2c1fad | 16057 | mips_opts.arch = file_mips_arch; |
1a2c1fad CD |
16058 | } |
16059 | else if (strncmp (name, "arch=", 5) == 0) | |
16060 | { | |
16061 | const struct mips_cpu_info *p; | |
16062 | ||
16063 | p = mips_parse_cpu("internal use", name + 5); | |
16064 | if (!p) | |
16065 | as_bad (_("unknown architecture %s"), name + 5); | |
16066 | else | |
16067 | { | |
16068 | mips_opts.arch = p->cpu; | |
16069 | mips_opts.isa = p->isa; | |
16070 | } | |
16071 | } | |
81a21e38 TS |
16072 | else if (strncmp (name, "mips", 4) == 0) |
16073 | { | |
16074 | const struct mips_cpu_info *p; | |
16075 | ||
16076 | p = mips_parse_cpu("internal use", name); | |
16077 | if (!p) | |
16078 | as_bad (_("unknown ISA level %s"), name + 4); | |
16079 | else | |
16080 | { | |
16081 | mips_opts.arch = p->cpu; | |
16082 | mips_opts.isa = p->isa; | |
16083 | } | |
16084 | } | |
af7ee8bf | 16085 | else |
81a21e38 | 16086 | as_bad (_("unknown ISA or architecture %s"), name); |
af7ee8bf CD |
16087 | |
16088 | switch (mips_opts.isa) | |
98d3f06f KH |
16089 | { |
16090 | case 0: | |
98d3f06f | 16091 | break; |
af7ee8bf CD |
16092 | case ISA_MIPS1: |
16093 | case ISA_MIPS2: | |
16094 | case ISA_MIPS32: | |
16095 | case ISA_MIPS32R2: | |
98d3f06f KH |
16096 | mips_opts.gp32 = 1; |
16097 | mips_opts.fp32 = 1; | |
16098 | break; | |
af7ee8bf CD |
16099 | case ISA_MIPS3: |
16100 | case ISA_MIPS4: | |
16101 | case ISA_MIPS5: | |
16102 | case ISA_MIPS64: | |
5f74bc13 | 16103 | case ISA_MIPS64R2: |
98d3f06f KH |
16104 | mips_opts.gp32 = 0; |
16105 | mips_opts.fp32 = 0; | |
16106 | break; | |
16107 | default: | |
16108 | as_bad (_("unknown ISA level %s"), name + 4); | |
16109 | break; | |
16110 | } | |
af7ee8bf | 16111 | if (reset) |
98d3f06f | 16112 | { |
af7ee8bf CD |
16113 | mips_opts.gp32 = file_mips_gp32; |
16114 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 16115 | } |
252b5132 RH |
16116 | } |
16117 | else if (strcmp (name, "autoextend") == 0) | |
16118 | mips_opts.noautoextend = 0; | |
16119 | else if (strcmp (name, "noautoextend") == 0) | |
16120 | mips_opts.noautoextend = 1; | |
16121 | else if (strcmp (name, "push") == 0) | |
16122 | { | |
16123 | struct mips_option_stack *s; | |
16124 | ||
16125 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
16126 | s->next = mips_opts_stack; | |
16127 | s->options = mips_opts; | |
16128 | mips_opts_stack = s; | |
16129 | } | |
16130 | else if (strcmp (name, "pop") == 0) | |
16131 | { | |
16132 | struct mips_option_stack *s; | |
16133 | ||
16134 | s = mips_opts_stack; | |
16135 | if (s == NULL) | |
16136 | as_bad (_(".set pop with no .set push")); | |
16137 | else | |
16138 | { | |
16139 | /* If we're changing the reorder mode we need to handle | |
16140 | delay slots correctly. */ | |
16141 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 16142 | start_noreorder (); |
252b5132 | 16143 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 16144 | end_noreorder (); |
252b5132 RH |
16145 | |
16146 | mips_opts = s->options; | |
16147 | mips_opts_stack = s->next; | |
16148 | free (s); | |
16149 | } | |
16150 | } | |
aed1a261 RS |
16151 | else if (strcmp (name, "sym32") == 0) |
16152 | mips_opts.sym32 = TRUE; | |
16153 | else if (strcmp (name, "nosym32") == 0) | |
16154 | mips_opts.sym32 = FALSE; | |
e6559e01 JM |
16155 | else if (strchr (name, ',')) |
16156 | { | |
16157 | /* Generic ".set" directive; use the generic handler. */ | |
16158 | *input_line_pointer = ch; | |
16159 | input_line_pointer = name; | |
16160 | s_set (0); | |
16161 | return; | |
16162 | } | |
252b5132 RH |
16163 | else |
16164 | { | |
16165 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
16166 | } | |
16167 | *input_line_pointer = ch; | |
16168 | demand_empty_rest_of_line (); | |
16169 | } | |
16170 | ||
16171 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
16172 | .option pic2. It means to generate SVR4 PIC calls. */ | |
16173 | ||
16174 | static void | |
17a2f251 | 16175 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16176 | { |
16177 | mips_pic = SVR4_PIC; | |
143d77c5 | 16178 | mips_abicalls = TRUE; |
4d0d148d TS |
16179 | |
16180 | if (g_switch_seen && g_switch_value != 0) | |
16181 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
16182 | g_switch_value = 0; | |
16183 | ||
252b5132 RH |
16184 | bfd_set_gp_size (stdoutput, 0); |
16185 | demand_empty_rest_of_line (); | |
16186 | } | |
16187 | ||
16188 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
16189 | PIC code. It sets the $gp register for the function based on the | |
16190 | function address, which is in the register named in the argument. | |
16191 | This uses a relocation against _gp_disp, which is handled specially | |
16192 | by the linker. The result is: | |
16193 | lui $gp,%hi(_gp_disp) | |
16194 | addiu $gp,$gp,%lo(_gp_disp) | |
16195 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
16196 | The .cpload argument is normally $25 == $t9. |
16197 | ||
16198 | The -mno-shared option changes this to: | |
bbe506e8 TS |
16199 | lui $gp,%hi(__gnu_local_gp) |
16200 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
16201 | and the argument is ignored. This saves an instruction, but the |
16202 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
16203 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
16204 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
16205 | |
16206 | static void | |
17a2f251 | 16207 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16208 | { |
16209 | expressionS ex; | |
aa6975fb ILT |
16210 | int reg; |
16211 | int in_shared; | |
252b5132 | 16212 | |
6478892d TS |
16213 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
16214 | .cpload is ignored. */ | |
16215 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
16216 | { |
16217 | s_ignore (0); | |
16218 | return; | |
16219 | } | |
16220 | ||
d3ecfc59 | 16221 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
16222 | if (mips_opts.noreorder == 0) |
16223 | as_warn (_(".cpload not in noreorder section")); | |
16224 | ||
aa6975fb ILT |
16225 | reg = tc_get_register (0); |
16226 | ||
16227 | /* If we need to produce a 64-bit address, we are better off using | |
16228 | the default instruction sequence. */ | |
aed1a261 | 16229 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 16230 | |
252b5132 | 16231 | ex.X_op = O_symbol; |
bbe506e8 TS |
16232 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
16233 | "__gnu_local_gp"); | |
252b5132 RH |
16234 | ex.X_op_symbol = NULL; |
16235 | ex.X_add_number = 0; | |
16236 | ||
16237 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 16238 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 16239 | |
584892a6 | 16240 | macro_start (); |
67c0d1eb RS |
16241 | macro_build_lui (&ex, mips_gp_register); |
16242 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 16243 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
16244 | if (in_shared) |
16245 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
16246 | mips_gp_register, reg); | |
584892a6 | 16247 | macro_end (); |
252b5132 RH |
16248 | |
16249 | demand_empty_rest_of_line (); | |
16250 | } | |
16251 | ||
6478892d TS |
16252 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
16253 | .cpsetup $reg1, offset|$reg2, label | |
16254 | ||
16255 | If offset is given, this results in: | |
16256 | sd $gp, offset($sp) | |
956cd1d6 | 16257 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
16258 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
16259 | daddu $gp, $gp, $reg1 | |
6478892d TS |
16260 | |
16261 | If $reg2 is given, this results in: | |
16262 | daddu $reg2, $gp, $0 | |
956cd1d6 | 16263 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
16264 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
16265 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
16266 | $reg1 is normally $25 == $t9. |
16267 | ||
16268 | The -mno-shared option replaces the last three instructions with | |
16269 | lui $gp,%hi(_gp) | |
54f4ddb3 | 16270 | addiu $gp,$gp,%lo(_gp) */ |
aa6975fb | 16271 | |
6478892d | 16272 | static void |
17a2f251 | 16273 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16274 | { |
16275 | expressionS ex_off; | |
16276 | expressionS ex_sym; | |
16277 | int reg1; | |
6478892d | 16278 | |
8586fc66 | 16279 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
16280 | We also need NewABI support. */ |
16281 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16282 | { | |
16283 | s_ignore (0); | |
16284 | return; | |
16285 | } | |
16286 | ||
16287 | reg1 = tc_get_register (0); | |
16288 | SKIP_WHITESPACE (); | |
16289 | if (*input_line_pointer != ',') | |
16290 | { | |
16291 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
16292 | return; | |
16293 | } | |
16294 | else | |
80245285 | 16295 | ++input_line_pointer; |
6478892d TS |
16296 | SKIP_WHITESPACE (); |
16297 | if (*input_line_pointer == '$') | |
80245285 TS |
16298 | { |
16299 | mips_cpreturn_register = tc_get_register (0); | |
16300 | mips_cpreturn_offset = -1; | |
16301 | } | |
6478892d | 16302 | else |
80245285 TS |
16303 | { |
16304 | mips_cpreturn_offset = get_absolute_expression (); | |
16305 | mips_cpreturn_register = -1; | |
16306 | } | |
6478892d TS |
16307 | SKIP_WHITESPACE (); |
16308 | if (*input_line_pointer != ',') | |
16309 | { | |
16310 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
16311 | return; | |
16312 | } | |
16313 | else | |
f9419b05 | 16314 | ++input_line_pointer; |
6478892d | 16315 | SKIP_WHITESPACE (); |
f21f8242 | 16316 | expression (&ex_sym); |
6478892d | 16317 | |
584892a6 | 16318 | macro_start (); |
6478892d TS |
16319 | if (mips_cpreturn_register == -1) |
16320 | { | |
16321 | ex_off.X_op = O_constant; | |
16322 | ex_off.X_add_symbol = NULL; | |
16323 | ex_off.X_op_symbol = NULL; | |
16324 | ex_off.X_add_number = mips_cpreturn_offset; | |
16325 | ||
67c0d1eb | 16326 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 16327 | BFD_RELOC_LO16, SP); |
6478892d TS |
16328 | } |
16329 | else | |
67c0d1eb | 16330 | macro_build (NULL, "daddu", "d,v,t", mips_cpreturn_register, |
17a2f251 | 16331 | mips_gp_register, 0); |
6478892d | 16332 | |
aed1a261 | 16333 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb | 16334 | { |
df58fc94 | 16335 | macro_build (&ex_sym, "lui", LUI_FMT, mips_gp_register, |
aa6975fb ILT |
16336 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, |
16337 | BFD_RELOC_HI16_S); | |
16338 | ||
16339 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
16340 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
16341 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
16342 | ||
16343 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
16344 | mips_gp_register, reg1); | |
16345 | } | |
16346 | else | |
16347 | { | |
16348 | expressionS ex; | |
16349 | ||
16350 | ex.X_op = O_symbol; | |
4184909a | 16351 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
16352 | ex.X_op_symbol = NULL; |
16353 | ex.X_add_number = 0; | |
6e1304d8 | 16354 | |
aa6975fb ILT |
16355 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
16356 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
16357 | ||
16358 | macro_build_lui (&ex, mips_gp_register); | |
16359 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
16360 | mips_gp_register, BFD_RELOC_LO16); | |
16361 | } | |
f21f8242 | 16362 | |
584892a6 | 16363 | macro_end (); |
6478892d TS |
16364 | |
16365 | demand_empty_rest_of_line (); | |
16366 | } | |
16367 | ||
16368 | static void | |
17a2f251 | 16369 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16370 | { |
16371 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
54f4ddb3 | 16372 | .cplocal is ignored. */ |
6478892d TS |
16373 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) |
16374 | { | |
16375 | s_ignore (0); | |
16376 | return; | |
16377 | } | |
16378 | ||
16379 | mips_gp_register = tc_get_register (0); | |
85b51719 | 16380 | demand_empty_rest_of_line (); |
6478892d TS |
16381 | } |
16382 | ||
252b5132 RH |
16383 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
16384 | offset from $sp. The offset is remembered, and after making a PIC | |
16385 | call $gp is restored from that location. */ | |
16386 | ||
16387 | static void | |
17a2f251 | 16388 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16389 | { |
16390 | expressionS ex; | |
252b5132 | 16391 | |
6478892d | 16392 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 16393 | .cprestore is ignored. */ |
6478892d | 16394 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
16395 | { |
16396 | s_ignore (0); | |
16397 | return; | |
16398 | } | |
16399 | ||
16400 | mips_cprestore_offset = get_absolute_expression (); | |
7a621144 | 16401 | mips_cprestore_valid = 1; |
252b5132 RH |
16402 | |
16403 | ex.X_op = O_constant; | |
16404 | ex.X_add_symbol = NULL; | |
16405 | ex.X_op_symbol = NULL; | |
16406 | ex.X_add_number = mips_cprestore_offset; | |
16407 | ||
584892a6 | 16408 | macro_start (); |
67c0d1eb RS |
16409 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
16410 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 16411 | macro_end (); |
252b5132 RH |
16412 | |
16413 | demand_empty_rest_of_line (); | |
16414 | } | |
16415 | ||
6478892d | 16416 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 16417 | was given in the preceding .cpsetup, it results in: |
6478892d | 16418 | ld $gp, offset($sp) |
76b3015f | 16419 | |
6478892d | 16420 | If a register $reg2 was given there, it results in: |
54f4ddb3 TS |
16421 | daddu $gp, $reg2, $0 */ |
16422 | ||
6478892d | 16423 | static void |
17a2f251 | 16424 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16425 | { |
16426 | expressionS ex; | |
6478892d TS |
16427 | |
16428 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
16429 | We also need NewABI support. */ | |
16430 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16431 | { | |
16432 | s_ignore (0); | |
16433 | return; | |
16434 | } | |
16435 | ||
584892a6 | 16436 | macro_start (); |
6478892d TS |
16437 | if (mips_cpreturn_register == -1) |
16438 | { | |
16439 | ex.X_op = O_constant; | |
16440 | ex.X_add_symbol = NULL; | |
16441 | ex.X_op_symbol = NULL; | |
16442 | ex.X_add_number = mips_cpreturn_offset; | |
16443 | ||
67c0d1eb | 16444 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
16445 | } |
16446 | else | |
67c0d1eb | 16447 | macro_build (NULL, "daddu", "d,v,t", mips_gp_register, |
17a2f251 | 16448 | mips_cpreturn_register, 0); |
584892a6 | 16449 | macro_end (); |
6478892d TS |
16450 | |
16451 | demand_empty_rest_of_line (); | |
16452 | } | |
16453 | ||
741d6ea8 JM |
16454 | /* Handle the .dtprelword and .dtpreldword pseudo-ops. They generate |
16455 | a 32-bit or 64-bit DTP-relative relocation (BYTES says which) for | |
16456 | use in DWARF debug information. */ | |
16457 | ||
16458 | static void | |
16459 | s_dtprel_internal (size_t bytes) | |
16460 | { | |
16461 | expressionS ex; | |
16462 | char *p; | |
16463 | ||
16464 | expression (&ex); | |
16465 | ||
16466 | if (ex.X_op != O_symbol) | |
16467 | { | |
16468 | as_bad (_("Unsupported use of %s"), (bytes == 8 | |
16469 | ? ".dtpreldword" | |
16470 | : ".dtprelword")); | |
16471 | ignore_rest_of_line (); | |
16472 | } | |
16473 | ||
16474 | p = frag_more (bytes); | |
16475 | md_number_to_chars (p, 0, bytes); | |
16476 | fix_new_exp (frag_now, p - frag_now->fr_literal, bytes, &ex, FALSE, | |
16477 | (bytes == 8 | |
16478 | ? BFD_RELOC_MIPS_TLS_DTPREL64 | |
16479 | : BFD_RELOC_MIPS_TLS_DTPREL32)); | |
16480 | ||
16481 | demand_empty_rest_of_line (); | |
16482 | } | |
16483 | ||
16484 | /* Handle .dtprelword. */ | |
16485 | ||
16486 | static void | |
16487 | s_dtprelword (int ignore ATTRIBUTE_UNUSED) | |
16488 | { | |
16489 | s_dtprel_internal (4); | |
16490 | } | |
16491 | ||
16492 | /* Handle .dtpreldword. */ | |
16493 | ||
16494 | static void | |
16495 | s_dtpreldword (int ignore ATTRIBUTE_UNUSED) | |
16496 | { | |
16497 | s_dtprel_internal (8); | |
16498 | } | |
16499 | ||
6478892d TS |
16500 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC |
16501 | code. It sets the offset to use in gp_rel relocations. */ | |
16502 | ||
16503 | static void | |
17a2f251 | 16504 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16505 | { |
16506 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
16507 | We also need NewABI support. */ | |
16508 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16509 | { | |
16510 | s_ignore (0); | |
16511 | return; | |
16512 | } | |
16513 | ||
def2e0dd | 16514 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
16515 | |
16516 | demand_empty_rest_of_line (); | |
16517 | } | |
16518 | ||
252b5132 RH |
16519 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
16520 | code. It generates a 32 bit GP relative reloc. */ | |
16521 | ||
16522 | static void | |
17a2f251 | 16523 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16524 | { |
a8dbcb85 TS |
16525 | segment_info_type *si; |
16526 | struct insn_label_list *l; | |
252b5132 RH |
16527 | symbolS *label; |
16528 | expressionS ex; | |
16529 | char *p; | |
16530 | ||
16531 | /* When not generating PIC code, this is treated as .word. */ | |
16532 | if (mips_pic != SVR4_PIC) | |
16533 | { | |
16534 | s_cons (2); | |
16535 | return; | |
16536 | } | |
16537 | ||
a8dbcb85 TS |
16538 | si = seg_info (now_seg); |
16539 | l = si->label_list; | |
16540 | label = l != NULL ? l->label : NULL; | |
7d10b47d | 16541 | mips_emit_delays (); |
252b5132 RH |
16542 | if (auto_align) |
16543 | mips_align (2, 0, label); | |
252b5132 RH |
16544 | |
16545 | expression (&ex); | |
a1facbec | 16546 | mips_clear_insn_labels (); |
252b5132 RH |
16547 | |
16548 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16549 | { | |
16550 | as_bad (_("Unsupported use of .gpword")); | |
16551 | ignore_rest_of_line (); | |
16552 | } | |
16553 | ||
16554 | p = frag_more (4); | |
17a2f251 | 16555 | md_number_to_chars (p, 0, 4); |
b34976b6 | 16556 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 16557 | BFD_RELOC_GPREL32); |
252b5132 RH |
16558 | |
16559 | demand_empty_rest_of_line (); | |
16560 | } | |
16561 | ||
10181a0d | 16562 | static void |
17a2f251 | 16563 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d | 16564 | { |
a8dbcb85 TS |
16565 | segment_info_type *si; |
16566 | struct insn_label_list *l; | |
10181a0d AO |
16567 | symbolS *label; |
16568 | expressionS ex; | |
16569 | char *p; | |
16570 | ||
16571 | /* When not generating PIC code, this is treated as .dword. */ | |
16572 | if (mips_pic != SVR4_PIC) | |
16573 | { | |
16574 | s_cons (3); | |
16575 | return; | |
16576 | } | |
16577 | ||
a8dbcb85 TS |
16578 | si = seg_info (now_seg); |
16579 | l = si->label_list; | |
16580 | label = l != NULL ? l->label : NULL; | |
7d10b47d | 16581 | mips_emit_delays (); |
10181a0d AO |
16582 | if (auto_align) |
16583 | mips_align (3, 0, label); | |
10181a0d AO |
16584 | |
16585 | expression (&ex); | |
a1facbec | 16586 | mips_clear_insn_labels (); |
10181a0d AO |
16587 | |
16588 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16589 | { | |
16590 | as_bad (_("Unsupported use of .gpdword")); | |
16591 | ignore_rest_of_line (); | |
16592 | } | |
16593 | ||
16594 | p = frag_more (8); | |
17a2f251 | 16595 | md_number_to_chars (p, 0, 8); |
a105a300 | 16596 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 16597 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
16598 | |
16599 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
16600 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
16601 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
16602 | |
16603 | demand_empty_rest_of_line (); | |
16604 | } | |
16605 | ||
252b5132 RH |
16606 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
16607 | tables in SVR4 PIC code. */ | |
16608 | ||
16609 | static void | |
17a2f251 | 16610 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16611 | { |
252b5132 RH |
16612 | int reg; |
16613 | ||
10181a0d AO |
16614 | /* This is ignored when not generating SVR4 PIC code. */ |
16615 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
16616 | { |
16617 | s_ignore (0); | |
16618 | return; | |
16619 | } | |
16620 | ||
16621 | /* Add $gp to the register named as an argument. */ | |
584892a6 | 16622 | macro_start (); |
252b5132 | 16623 | reg = tc_get_register (0); |
67c0d1eb | 16624 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 16625 | macro_end (); |
252b5132 | 16626 | |
bdaaa2e1 | 16627 | demand_empty_rest_of_line (); |
252b5132 RH |
16628 | } |
16629 | ||
16630 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
df58fc94 | 16631 | mips16/micromips mode. This permits the linker to handle them specially, |
252b5132 RH |
16632 | such as generating jalx instructions when needed. We also make |
16633 | them odd for the duration of the assembly, in order to generate the | |
16634 | right sort of code. We will make them even in the adjust_symtab | |
16635 | routine, while leaving them marked. This is convenient for the | |
16636 | debugger and the disassembler. The linker knows to make them odd | |
16637 | again. */ | |
16638 | ||
16639 | static void | |
17a2f251 | 16640 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16641 | { |
df58fc94 | 16642 | mips_mark_labels (); |
252b5132 RH |
16643 | |
16644 | demand_empty_rest_of_line (); | |
16645 | } | |
16646 | ||
16647 | /* Handle a .stabn directive. We need these in order to mark a label | |
16648 | as being a mips16 text label correctly. Sometimes the compiler | |
16649 | will emit a label, followed by a .stabn, and then switch sections. | |
16650 | If the label and .stabn are in mips16 mode, then the label is | |
16651 | really a mips16 text label. */ | |
16652 | ||
16653 | static void | |
17a2f251 | 16654 | s_mips_stab (int type) |
252b5132 | 16655 | { |
f9419b05 | 16656 | if (type == 'n') |
df58fc94 | 16657 | mips_mark_labels (); |
252b5132 RH |
16658 | |
16659 | s_stab (type); | |
16660 | } | |
16661 | ||
54f4ddb3 | 16662 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
252b5132 RH |
16663 | |
16664 | static void | |
17a2f251 | 16665 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16666 | { |
16667 | char *name; | |
16668 | int c; | |
16669 | symbolS *symbolP; | |
16670 | expressionS exp; | |
16671 | ||
16672 | name = input_line_pointer; | |
16673 | c = get_symbol_end (); | |
16674 | symbolP = symbol_find_or_make (name); | |
16675 | S_SET_WEAK (symbolP); | |
16676 | *input_line_pointer = c; | |
16677 | ||
16678 | SKIP_WHITESPACE (); | |
16679 | ||
16680 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
16681 | { | |
16682 | if (S_IS_DEFINED (symbolP)) | |
16683 | { | |
20203fb9 | 16684 | as_bad (_("ignoring attempt to redefine symbol %s"), |
252b5132 RH |
16685 | S_GET_NAME (symbolP)); |
16686 | ignore_rest_of_line (); | |
16687 | return; | |
16688 | } | |
bdaaa2e1 | 16689 | |
252b5132 RH |
16690 | if (*input_line_pointer == ',') |
16691 | { | |
16692 | ++input_line_pointer; | |
16693 | SKIP_WHITESPACE (); | |
16694 | } | |
bdaaa2e1 | 16695 | |
252b5132 RH |
16696 | expression (&exp); |
16697 | if (exp.X_op != O_symbol) | |
16698 | { | |
20203fb9 | 16699 | as_bad (_("bad .weakext directive")); |
98d3f06f | 16700 | ignore_rest_of_line (); |
252b5132 RH |
16701 | return; |
16702 | } | |
49309057 | 16703 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
16704 | } |
16705 | ||
16706 | demand_empty_rest_of_line (); | |
16707 | } | |
16708 | ||
16709 | /* Parse a register string into a number. Called from the ECOFF code | |
16710 | to parse .frame. The argument is non-zero if this is the frame | |
16711 | register, so that we can record it in mips_frame_reg. */ | |
16712 | ||
16713 | int | |
17a2f251 | 16714 | tc_get_register (int frame) |
252b5132 | 16715 | { |
707bfff6 | 16716 | unsigned int reg; |
252b5132 RH |
16717 | |
16718 | SKIP_WHITESPACE (); | |
707bfff6 TS |
16719 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
16720 | reg = 0; | |
252b5132 | 16721 | if (frame) |
7a621144 DJ |
16722 | { |
16723 | mips_frame_reg = reg != 0 ? reg : SP; | |
16724 | mips_frame_reg_valid = 1; | |
16725 | mips_cprestore_valid = 0; | |
16726 | } | |
252b5132 RH |
16727 | return reg; |
16728 | } | |
16729 | ||
16730 | valueT | |
17a2f251 | 16731 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
16732 | { |
16733 | int align = bfd_get_section_alignment (stdoutput, seg); | |
16734 | ||
b4c71f56 TS |
16735 | if (IS_ELF) |
16736 | { | |
16737 | /* We don't need to align ELF sections to the full alignment. | |
16738 | However, Irix 5 may prefer that we align them at least to a 16 | |
16739 | byte boundary. We don't bother to align the sections if we | |
16740 | are targeted for an embedded system. */ | |
c41e87e3 | 16741 | if (strncmp (TARGET_OS, "elf", 3) == 0) |
b4c71f56 TS |
16742 | return addr; |
16743 | if (align > 4) | |
16744 | align = 4; | |
16745 | } | |
252b5132 RH |
16746 | |
16747 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
16748 | } | |
16749 | ||
16750 | /* Utility routine, called from above as well. If called while the | |
16751 | input file is still being read, it's only an approximation. (For | |
16752 | example, a symbol may later become defined which appeared to be | |
16753 | undefined earlier.) */ | |
16754 | ||
16755 | static int | |
17a2f251 | 16756 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
16757 | { |
16758 | if (sym == 0) | |
16759 | return 0; | |
16760 | ||
4d0d148d | 16761 | if (g_switch_value > 0) |
252b5132 RH |
16762 | { |
16763 | const char *symname; | |
16764 | int change; | |
16765 | ||
c9914766 | 16766 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
16767 | register. It can be if it is smaller than the -G size or if |
16768 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 16769 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
16770 | they can. */ |
16771 | symname = S_GET_NAME (sym); | |
16772 | if (symname != (const char *) NULL | |
16773 | && (strcmp (symname, "eprol") == 0 | |
16774 | || strcmp (symname, "etext") == 0 | |
16775 | || strcmp (symname, "_gp") == 0 | |
16776 | || strcmp (symname, "edata") == 0 | |
16777 | || strcmp (symname, "_fbss") == 0 | |
16778 | || strcmp (symname, "_fdata") == 0 | |
16779 | || strcmp (symname, "_ftext") == 0 | |
16780 | || strcmp (symname, "end") == 0 | |
16781 | || strcmp (symname, "_gp_disp") == 0)) | |
16782 | change = 1; | |
16783 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
16784 | && (0 | |
16785 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
16786 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
16787 | && (symbol_get_obj (sym)->ecoff_extern_size | |
16788 | <= g_switch_value)) | |
252b5132 RH |
16789 | #endif |
16790 | /* We must defer this decision until after the whole | |
16791 | file has been read, since there might be a .extern | |
16792 | after the first use of this symbol. */ | |
16793 | || (before_relaxing | |
16794 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 16795 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
16796 | #endif |
16797 | && S_GET_VALUE (sym) == 0) | |
16798 | || (S_GET_VALUE (sym) != 0 | |
16799 | && S_GET_VALUE (sym) <= g_switch_value))) | |
16800 | change = 0; | |
16801 | else | |
16802 | { | |
16803 | const char *segname; | |
16804 | ||
16805 | segname = segment_name (S_GET_SEGMENT (sym)); | |
9c2799c2 | 16806 | gas_assert (strcmp (segname, ".lit8") != 0 |
252b5132 RH |
16807 | && strcmp (segname, ".lit4") != 0); |
16808 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
16809 | && strcmp (segname, ".sbss") != 0 |
16810 | && strncmp (segname, ".sdata.", 7) != 0 | |
d4dc2f22 TS |
16811 | && strncmp (segname, ".sbss.", 6) != 0 |
16812 | && strncmp (segname, ".gnu.linkonce.sb.", 17) != 0 | |
fba2b7f9 | 16813 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); |
252b5132 RH |
16814 | } |
16815 | return change; | |
16816 | } | |
16817 | else | |
c9914766 | 16818 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
16819 | return 1; |
16820 | } | |
16821 | ||
5919d012 RS |
16822 | |
16823 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
16824 | ||
16825 | static bfd_boolean | |
17a2f251 | 16826 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
16827 | { |
16828 | asection *symsec; | |
5919d012 RS |
16829 | |
16830 | /* Handle the case of a symbol equated to another symbol. */ | |
16831 | while (symbol_equated_reloc_p (sym)) | |
16832 | { | |
16833 | symbolS *n; | |
16834 | ||
5f0fe04b | 16835 | /* It's possible to get a loop here in a badly written program. */ |
5919d012 RS |
16836 | n = symbol_get_value_expression (sym)->X_add_symbol; |
16837 | if (n == sym) | |
16838 | break; | |
16839 | sym = n; | |
16840 | } | |
16841 | ||
df1f3cda DD |
16842 | if (symbol_section_p (sym)) |
16843 | return TRUE; | |
16844 | ||
5919d012 RS |
16845 | symsec = S_GET_SEGMENT (sym); |
16846 | ||
5919d012 RS |
16847 | /* This must duplicate the test in adjust_reloc_syms. */ |
16848 | return (symsec != &bfd_und_section | |
16849 | && symsec != &bfd_abs_section | |
5f0fe04b TS |
16850 | && !bfd_is_com_section (symsec) |
16851 | && !s_is_linkonce (sym, segtype) | |
5919d012 RS |
16852 | #ifdef OBJ_ELF |
16853 | /* A global or weak symbol is treated as external. */ | |
f43abd2b | 16854 | && (!IS_ELF || (! S_IS_WEAK (sym) && ! S_IS_EXTERNAL (sym))) |
5919d012 RS |
16855 | #endif |
16856 | ); | |
16857 | } | |
16858 | ||
16859 | ||
252b5132 RH |
16860 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
16861 | extended opcode. SEC is the section the frag is in. */ | |
16862 | ||
16863 | static int | |
17a2f251 | 16864 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
16865 | { |
16866 | int type; | |
3994f87e | 16867 | const struct mips16_immed_operand *op; |
252b5132 RH |
16868 | offsetT val; |
16869 | int mintiny, maxtiny; | |
16870 | segT symsec; | |
98aa84af | 16871 | fragS *sym_frag; |
252b5132 RH |
16872 | |
16873 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
16874 | return 0; | |
16875 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
16876 | return 1; | |
16877 | ||
16878 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
16879 | op = mips16_immed_operands; | |
16880 | while (op->type != type) | |
16881 | { | |
16882 | ++op; | |
9c2799c2 | 16883 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
16884 | } |
16885 | ||
16886 | if (op->unsp) | |
16887 | { | |
16888 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
16889 | { | |
16890 | mintiny = 1; | |
16891 | maxtiny = 1 << op->nbits; | |
16892 | } | |
16893 | else | |
16894 | { | |
16895 | mintiny = 0; | |
16896 | maxtiny = (1 << op->nbits) - 1; | |
16897 | } | |
16898 | } | |
16899 | else | |
16900 | { | |
16901 | mintiny = - (1 << (op->nbits - 1)); | |
16902 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
16903 | } | |
16904 | ||
98aa84af | 16905 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 16906 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 16907 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
16908 | |
16909 | if (op->pcrel) | |
16910 | { | |
16911 | addressT addr; | |
16912 | ||
16913 | /* We won't have the section when we are called from | |
16914 | mips_relax_frag. However, we will always have been called | |
16915 | from md_estimate_size_before_relax first. If this is a | |
16916 | branch to a different section, we mark it as such. If SEC is | |
16917 | NULL, and the frag is not marked, then it must be a branch to | |
16918 | the same section. */ | |
16919 | if (sec == NULL) | |
16920 | { | |
16921 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
16922 | return 1; | |
16923 | } | |
16924 | else | |
16925 | { | |
98aa84af | 16926 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
16927 | if (symsec != sec) |
16928 | { | |
16929 | fragp->fr_subtype = | |
16930 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
16931 | ||
16932 | /* FIXME: We should support this, and let the linker | |
16933 | catch branches and loads that are out of range. */ | |
16934 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
16935 | _("unsupported PC relative reference to different section")); | |
16936 | ||
16937 | return 1; | |
16938 | } | |
98aa84af AM |
16939 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
16940 | /* Assume non-extended on the first relaxation pass. | |
16941 | The address we have calculated will be bogus if this is | |
16942 | a forward branch to another frag, as the forward frag | |
16943 | will have fr_address == 0. */ | |
16944 | return 0; | |
252b5132 RH |
16945 | } |
16946 | ||
16947 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
16948 | the same section. If the relax_marker of the symbol fragment |
16949 | differs from the relax_marker of this fragment, we have not | |
16950 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
16951 | in STRETCH in order to get a better estimate of the address. |
16952 | This particularly matters because of the shift bits. */ | |
16953 | if (stretch != 0 | |
98aa84af | 16954 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
16955 | { |
16956 | fragS *f; | |
16957 | ||
16958 | /* Adjust stretch for any alignment frag. Note that if have | |
16959 | been expanding the earlier code, the symbol may be | |
16960 | defined in what appears to be an earlier frag. FIXME: | |
16961 | This doesn't handle the fr_subtype field, which specifies | |
16962 | a maximum number of bytes to skip when doing an | |
16963 | alignment. */ | |
98aa84af | 16964 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
16965 | { |
16966 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
16967 | { | |
16968 | if (stretch < 0) | |
16969 | stretch = - ((- stretch) | |
16970 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
16971 | else | |
16972 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
16973 | if (stretch == 0) | |
16974 | break; | |
16975 | } | |
16976 | } | |
16977 | if (f != NULL) | |
16978 | val += stretch; | |
16979 | } | |
16980 | ||
16981 | addr = fragp->fr_address + fragp->fr_fix; | |
16982 | ||
16983 | /* The base address rules are complicated. The base address of | |
16984 | a branch is the following instruction. The base address of a | |
16985 | PC relative load or add is the instruction itself, but if it | |
16986 | is in a delay slot (in which case it can not be extended) use | |
16987 | the address of the instruction whose delay slot it is in. */ | |
16988 | if (type == 'p' || type == 'q') | |
16989 | { | |
16990 | addr += 2; | |
16991 | ||
16992 | /* If we are currently assuming that this frag should be | |
16993 | extended, then, the current address is two bytes | |
bdaaa2e1 | 16994 | higher. */ |
252b5132 RH |
16995 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
16996 | addr += 2; | |
16997 | ||
16998 | /* Ignore the low bit in the target, since it will be set | |
16999 | for a text label. */ | |
17000 | if ((val & 1) != 0) | |
17001 | --val; | |
17002 | } | |
17003 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
17004 | addr -= 4; | |
17005 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
17006 | addr -= 2; | |
17007 | ||
17008 | val -= addr & ~ ((1 << op->shift) - 1); | |
17009 | ||
17010 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
17011 | if (type == 'p' || type == 'q') | |
17012 | val /= 2; | |
17013 | ||
17014 | /* If any of the shifted bits are set, we must use an extended | |
17015 | opcode. If the address depends on the size of this | |
17016 | instruction, this can lead to a loop, so we arrange to always | |
17017 | use an extended opcode. We only check this when we are in | |
17018 | the main relaxation loop, when SEC is NULL. */ | |
17019 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
17020 | { | |
17021 | fragp->fr_subtype = | |
17022 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17023 | return 1; | |
17024 | } | |
17025 | ||
17026 | /* If we are about to mark a frag as extended because the value | |
17027 | is precisely maxtiny + 1, then there is a chance of an | |
17028 | infinite loop as in the following code: | |
17029 | la $4,foo | |
17030 | .skip 1020 | |
17031 | .align 2 | |
17032 | foo: | |
17033 | In this case when the la is extended, foo is 0x3fc bytes | |
17034 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
17035 | the la must be extended. To avoid this loop, we mark the | |
17036 | frag as extended if it was small, and is about to become | |
17037 | extended with a value of maxtiny + 1. */ | |
17038 | if (val == ((maxtiny + 1) << op->shift) | |
17039 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
17040 | && sec == NULL) | |
17041 | { | |
17042 | fragp->fr_subtype = | |
17043 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17044 | return 1; | |
17045 | } | |
17046 | } | |
17047 | else if (symsec != absolute_section && sec != NULL) | |
17048 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
17049 | ||
17050 | if ((val & ((1 << op->shift) - 1)) != 0 | |
17051 | || val < (mintiny << op->shift) | |
17052 | || val > (maxtiny << op->shift)) | |
17053 | return 1; | |
17054 | else | |
17055 | return 0; | |
17056 | } | |
17057 | ||
4a6a3df4 AO |
17058 | /* Compute the length of a branch sequence, and adjust the |
17059 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
17060 | worst-case length is computed, with UPDATE being used to indicate | |
17061 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
17062 | branch is to be computed. */ | |
17063 | static int | |
17a2f251 | 17064 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 17065 | { |
b34976b6 | 17066 | bfd_boolean toofar; |
4a6a3df4 AO |
17067 | int length; |
17068 | ||
17069 | if (fragp | |
17070 | && S_IS_DEFINED (fragp->fr_symbol) | |
17071 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17072 | { | |
17073 | addressT addr; | |
17074 | offsetT val; | |
17075 | ||
17076 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17077 | ||
17078 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
17079 | ||
17080 | val -= addr; | |
17081 | ||
17082 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
17083 | } | |
17084 | else if (fragp) | |
17085 | /* If the symbol is not defined or it's in a different segment, | |
17086 | assume the user knows what's going on and emit a short | |
17087 | branch. */ | |
b34976b6 | 17088 | toofar = FALSE; |
4a6a3df4 | 17089 | else |
b34976b6 | 17090 | toofar = TRUE; |
4a6a3df4 AO |
17091 | |
17092 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
17093 | fragp->fr_subtype | |
66b3e8da MR |
17094 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_AT (fragp->fr_subtype), |
17095 | RELAX_BRANCH_UNCOND (fragp->fr_subtype), | |
4a6a3df4 AO |
17096 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
17097 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
17098 | toofar); | |
17099 | ||
17100 | length = 4; | |
17101 | if (toofar) | |
17102 | { | |
17103 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
17104 | length += 8; | |
17105 | ||
17106 | if (mips_pic != NO_PIC) | |
17107 | { | |
17108 | /* Additional space for PIC loading of target address. */ | |
17109 | length += 8; | |
17110 | if (mips_opts.isa == ISA_MIPS1) | |
17111 | /* Additional space for $at-stabilizing nop. */ | |
17112 | length += 4; | |
17113 | } | |
17114 | ||
17115 | /* If branch is conditional. */ | |
17116 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
17117 | length += 8; | |
17118 | } | |
b34976b6 | 17119 | |
4a6a3df4 AO |
17120 | return length; |
17121 | } | |
17122 | ||
df58fc94 RS |
17123 | /* Compute the length of a branch sequence, and adjust the |
17124 | RELAX_MICROMIPS_TOOFAR32 bit accordingly. If FRAGP is NULL, the | |
17125 | worst-case length is computed, with UPDATE being used to indicate | |
17126 | whether an unconditional (-1), or regular (0) branch is to be | |
17127 | computed. */ | |
17128 | ||
17129 | static int | |
17130 | relaxed_micromips_32bit_branch_length (fragS *fragp, asection *sec, int update) | |
17131 | { | |
17132 | bfd_boolean toofar; | |
17133 | int length; | |
17134 | ||
17135 | if (fragp | |
17136 | && S_IS_DEFINED (fragp->fr_symbol) | |
17137 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17138 | { | |
17139 | addressT addr; | |
17140 | offsetT val; | |
17141 | ||
17142 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17143 | /* Ignore the low bit in the target, since it will be set | |
17144 | for a text label. */ | |
17145 | if ((val & 1) != 0) | |
17146 | --val; | |
17147 | ||
17148 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
17149 | ||
17150 | val -= addr; | |
17151 | ||
17152 | toofar = val < - (0x8000 << 1) || val >= (0x8000 << 1); | |
17153 | } | |
17154 | else if (fragp) | |
17155 | /* If the symbol is not defined or it's in a different segment, | |
17156 | assume the user knows what's going on and emit a short | |
17157 | branch. */ | |
17158 | toofar = FALSE; | |
17159 | else | |
17160 | toofar = TRUE; | |
17161 | ||
17162 | if (fragp && update | |
17163 | && toofar != RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17164 | fragp->fr_subtype = (toofar | |
17165 | ? RELAX_MICROMIPS_MARK_TOOFAR32 (fragp->fr_subtype) | |
17166 | : RELAX_MICROMIPS_CLEAR_TOOFAR32 (fragp->fr_subtype)); | |
17167 | ||
17168 | length = 4; | |
17169 | if (toofar) | |
17170 | { | |
17171 | bfd_boolean compact_known = fragp != NULL; | |
17172 | bfd_boolean compact = FALSE; | |
17173 | bfd_boolean uncond; | |
17174 | ||
17175 | if (compact_known) | |
17176 | compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); | |
17177 | if (fragp) | |
17178 | uncond = RELAX_MICROMIPS_UNCOND (fragp->fr_subtype); | |
17179 | else | |
17180 | uncond = update < 0; | |
17181 | ||
17182 | /* If label is out of range, we turn branch <br>: | |
17183 | ||
17184 | <br> label # 4 bytes | |
17185 | 0: | |
17186 | ||
17187 | into: | |
17188 | ||
17189 | j label # 4 bytes | |
17190 | nop # 2 bytes if compact && !PIC | |
17191 | 0: | |
17192 | */ | |
17193 | if (mips_pic == NO_PIC && (!compact_known || compact)) | |
17194 | length += 2; | |
17195 | ||
17196 | /* If assembling PIC code, we further turn: | |
17197 | ||
17198 | j label # 4 bytes | |
17199 | ||
17200 | into: | |
17201 | ||
17202 | lw/ld at, %got(label)(gp) # 4 bytes | |
17203 | d/addiu at, %lo(label) # 4 bytes | |
17204 | jr/c at # 2 bytes | |
17205 | */ | |
17206 | if (mips_pic != NO_PIC) | |
17207 | length += 6; | |
17208 | ||
17209 | /* If branch <br> is conditional, we prepend negated branch <brneg>: | |
17210 | ||
17211 | <brneg> 0f # 4 bytes | |
17212 | nop # 2 bytes if !compact | |
17213 | */ | |
17214 | if (!uncond) | |
17215 | length += (compact_known && compact) ? 4 : 6; | |
17216 | } | |
17217 | ||
17218 | return length; | |
17219 | } | |
17220 | ||
17221 | /* Compute the length of a branch, and adjust the RELAX_MICROMIPS_TOOFAR16 | |
17222 | bit accordingly. */ | |
17223 | ||
17224 | static int | |
17225 | relaxed_micromips_16bit_branch_length (fragS *fragp, asection *sec, int update) | |
17226 | { | |
17227 | bfd_boolean toofar; | |
17228 | ||
17229 | if (RELAX_MICROMIPS_U16BIT (fragp->fr_subtype)) | |
17230 | return 2; | |
17231 | ||
17232 | if (fragp | |
17233 | && S_IS_DEFINED (fragp->fr_symbol) | |
17234 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17235 | { | |
17236 | addressT addr; | |
17237 | offsetT val; | |
17238 | int type; | |
17239 | ||
17240 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17241 | /* Ignore the low bit in the target, since it will be set | |
17242 | for a text label. */ | |
17243 | if ((val & 1) != 0) | |
17244 | --val; | |
17245 | ||
17246 | /* Assume this is a 2-byte branch. */ | |
17247 | addr = fragp->fr_address + fragp->fr_fix + 2; | |
17248 | ||
17249 | /* We try to avoid the infinite loop by not adding 2 more bytes for | |
17250 | long branches. */ | |
17251 | ||
17252 | val -= addr; | |
17253 | ||
17254 | type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
17255 | if (type == 'D') | |
17256 | toofar = val < - (0x200 << 1) || val >= (0x200 << 1); | |
17257 | else if (type == 'E') | |
17258 | toofar = val < - (0x40 << 1) || val >= (0x40 << 1); | |
17259 | else | |
17260 | abort (); | |
17261 | } | |
17262 | else | |
17263 | /* If the symbol is not defined or it's in a different segment, | |
17264 | we emit a normal 32-bit branch. */ | |
17265 | toofar = TRUE; | |
17266 | ||
17267 | if (fragp && update | |
17268 | && toofar != RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
17269 | fragp->fr_subtype | |
17270 | = toofar ? RELAX_MICROMIPS_MARK_TOOFAR16 (fragp->fr_subtype) | |
17271 | : RELAX_MICROMIPS_CLEAR_TOOFAR16 (fragp->fr_subtype); | |
17272 | ||
17273 | if (toofar) | |
17274 | return 4; | |
17275 | ||
17276 | return 2; | |
17277 | } | |
17278 | ||
252b5132 RH |
17279 | /* Estimate the size of a frag before relaxing. Unless this is the |
17280 | mips16, we are not really relaxing here, and the final size is | |
17281 | encoded in the subtype information. For the mips16, we have to | |
17282 | decide whether we are using an extended opcode or not. */ | |
17283 | ||
252b5132 | 17284 | int |
17a2f251 | 17285 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 17286 | { |
5919d012 | 17287 | int change; |
252b5132 | 17288 | |
4a6a3df4 AO |
17289 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17290 | { | |
17291 | ||
b34976b6 AM |
17292 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
17293 | ||
4a6a3df4 AO |
17294 | return fragp->fr_var; |
17295 | } | |
17296 | ||
252b5132 | 17297 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
17298 | /* We don't want to modify the EXTENDED bit here; it might get us |
17299 | into infinite loops. We change it only in mips_relax_frag(). */ | |
17300 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 | 17301 | |
df58fc94 RS |
17302 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17303 | { | |
17304 | int length = 4; | |
17305 | ||
17306 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17307 | length = relaxed_micromips_16bit_branch_length (fragp, segtype, FALSE); | |
17308 | if (length == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17309 | length = relaxed_micromips_32bit_branch_length (fragp, segtype, FALSE); | |
17310 | fragp->fr_var = length; | |
17311 | ||
17312 | return length; | |
17313 | } | |
17314 | ||
252b5132 | 17315 | if (mips_pic == NO_PIC) |
5919d012 | 17316 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 17317 | else if (mips_pic == SVR4_PIC) |
5919d012 | 17318 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
17319 | else if (mips_pic == VXWORKS_PIC) |
17320 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
17321 | change = 0; | |
252b5132 RH |
17322 | else |
17323 | abort (); | |
17324 | ||
17325 | if (change) | |
17326 | { | |
4d7206a2 | 17327 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 17328 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 17329 | } |
4d7206a2 RS |
17330 | else |
17331 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
17332 | } |
17333 | ||
17334 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 17335 | should be converted into a reloc against a section. */ |
252b5132 RH |
17336 | |
17337 | int | |
17a2f251 | 17338 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 17339 | { |
252b5132 RH |
17340 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
17341 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
17342 | return 0; | |
a161fe53 | 17343 | |
252b5132 RH |
17344 | if (fixp->fx_addsy == NULL) |
17345 | return 1; | |
a161fe53 | 17346 | |
de7e6852 RS |
17347 | /* If symbol SYM is in a mergeable section, relocations of the form |
17348 | SYM + 0 can usually be made section-relative. The mergeable data | |
17349 | is then identified by the section offset rather than by the symbol. | |
17350 | ||
17351 | However, if we're generating REL LO16 relocations, the offset is split | |
17352 | between the LO16 and parterning high part relocation. The linker will | |
17353 | need to recalculate the complete offset in order to correctly identify | |
17354 | the merge data. | |
17355 | ||
17356 | The linker has traditionally not looked for the parterning high part | |
17357 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
17358 | placed anywhere. Rather than break backwards compatibility by changing | |
17359 | this, it seems better not to force the issue, and instead keep the | |
17360 | original symbol. This will work with either linker behavior. */ | |
738e5348 | 17361 | if ((lo16_reloc_p (fixp->fx_r_type) |
704803a9 | 17362 | || reloc_needs_lo_p (fixp->fx_r_type)) |
de7e6852 RS |
17363 | && HAVE_IN_PLACE_ADDENDS |
17364 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
17365 | return 0; | |
17366 | ||
ce70d90a MR |
17367 | /* There is no place to store an in-place offset for JALR relocations. |
17368 | Likewise an in-range offset of PC-relative relocations may overflow | |
17369 | the in-place relocatable field if recalculated against the start | |
17370 | address of the symbol's containing section. */ | |
17371 | if (HAVE_IN_PLACE_ADDENDS | |
df58fc94 | 17372 | && (fixp->fx_pcrel || jalr_reloc_p (fixp->fx_r_type))) |
1180b5a4 RS |
17373 | return 0; |
17374 | ||
252b5132 | 17375 | #ifdef OBJ_ELF |
b314ec0e RS |
17376 | /* R_MIPS16_26 relocations against non-MIPS16 functions might resolve |
17377 | to a floating-point stub. The same is true for non-R_MIPS16_26 | |
17378 | relocations against MIPS16 functions; in this case, the stub becomes | |
17379 | the function's canonical address. | |
17380 | ||
17381 | Floating-point stubs are stored in unique .mips16.call.* or | |
17382 | .mips16.fn.* sections. If a stub T for function F is in section S, | |
17383 | the first relocation in section S must be against F; this is how the | |
17384 | linker determines the target function. All relocations that might | |
17385 | resolve to T must also be against F. We therefore have the following | |
17386 | restrictions, which are given in an intentionally-redundant way: | |
17387 | ||
17388 | 1. We cannot reduce R_MIPS16_26 relocations against non-MIPS16 | |
17389 | symbols. | |
17390 | ||
17391 | 2. We cannot reduce a stub's relocations against non-MIPS16 symbols | |
17392 | if that stub might be used. | |
17393 | ||
17394 | 3. We cannot reduce non-R_MIPS16_26 relocations against MIPS16 | |
17395 | symbols. | |
17396 | ||
17397 | 4. We cannot reduce a stub's relocations against MIPS16 symbols if | |
17398 | that stub might be used. | |
17399 | ||
17400 | There is a further restriction: | |
17401 | ||
df58fc94 RS |
17402 | 5. We cannot reduce jump relocations (R_MIPS_26, R_MIPS16_26 or |
17403 | R_MICROMIPS_26_S1) against MIPS16 or microMIPS symbols on | |
17404 | targets with in-place addends; the relocation field cannot | |
b314ec0e RS |
17405 | encode the low bit. |
17406 | ||
df58fc94 RS |
17407 | For simplicity, we deal with (3)-(4) by not reducing _any_ relocation |
17408 | against a MIPS16 symbol. We deal with (5) by by not reducing any | |
17409 | such relocations on REL targets. | |
b314ec0e RS |
17410 | |
17411 | We deal with (1)-(2) by saying that, if there's a R_MIPS16_26 | |
17412 | relocation against some symbol R, no relocation against R may be | |
17413 | reduced. (Note that this deals with (2) as well as (1) because | |
17414 | relocations against global symbols will never be reduced on ELF | |
17415 | targets.) This approach is a little simpler than trying to detect | |
17416 | stub sections, and gives the "all or nothing" per-symbol consistency | |
17417 | that we have for MIPS16 symbols. */ | |
f43abd2b | 17418 | if (IS_ELF |
b314ec0e | 17419 | && fixp->fx_subsy == NULL |
30c09090 | 17420 | && (ELF_ST_IS_MIPS16 (S_GET_OTHER (fixp->fx_addsy)) |
df58fc94 RS |
17421 | || *symbol_get_tc (fixp->fx_addsy) |
17422 | || (HAVE_IN_PLACE_ADDENDS | |
17423 | && ELF_ST_IS_MICROMIPS (S_GET_OTHER (fixp->fx_addsy)) | |
17424 | && jmp_reloc_p (fixp->fx_r_type)))) | |
252b5132 RH |
17425 | return 0; |
17426 | #endif | |
a161fe53 | 17427 | |
252b5132 RH |
17428 | return 1; |
17429 | } | |
17430 | ||
17431 | /* Translate internal representation of relocation info to BFD target | |
17432 | format. */ | |
17433 | ||
17434 | arelent ** | |
17a2f251 | 17435 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
17436 | { |
17437 | static arelent *retval[4]; | |
17438 | arelent *reloc; | |
17439 | bfd_reloc_code_real_type code; | |
17440 | ||
4b0cff4e TS |
17441 | memset (retval, 0, sizeof(retval)); |
17442 | reloc = retval[0] = (arelent *) xcalloc (1, sizeof (arelent)); | |
49309057 ILT |
17443 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
17444 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
17445 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
17446 | ||
bad36eac DJ |
17447 | if (fixp->fx_pcrel) |
17448 | { | |
df58fc94 RS |
17449 | gas_assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2 |
17450 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
17451 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
17452 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
bad36eac DJ |
17453 | |
17454 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
17455 | Relocations want only the symbol offset. */ | |
17456 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
f43abd2b | 17457 | if (!IS_ELF) |
bad36eac DJ |
17458 | { |
17459 | /* A gruesome hack which is a result of the gruesome gas | |
17460 | reloc handling. What's worse, for COFF (as opposed to | |
17461 | ECOFF), we might need yet another copy of reloc->address. | |
17462 | See bfd_install_relocation. */ | |
17463 | reloc->addend += reloc->address; | |
17464 | } | |
17465 | } | |
17466 | else | |
17467 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 17468 | |
438c16b8 TS |
17469 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
17470 | entry to be used in the relocation's section offset. */ | |
17471 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
17472 | { |
17473 | reloc->address = reloc->addend; | |
17474 | reloc->addend = 0; | |
17475 | } | |
17476 | ||
252b5132 | 17477 | code = fixp->fx_r_type; |
252b5132 | 17478 | |
bad36eac | 17479 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
17480 | if (reloc->howto == NULL) |
17481 | { | |
17482 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
17483 | _("Can not represent %s relocation in this object file format"), | |
17484 | bfd_get_reloc_code_name (code)); | |
17485 | retval[0] = NULL; | |
17486 | } | |
17487 | ||
17488 | return retval; | |
17489 | } | |
17490 | ||
17491 | /* Relax a machine dependent frag. This returns the amount by which | |
17492 | the current size of the frag should change. */ | |
17493 | ||
17494 | int | |
17a2f251 | 17495 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 17496 | { |
4a6a3df4 AO |
17497 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17498 | { | |
17499 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
17500 | |
17501 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
17502 | |
17503 | return fragp->fr_var - old_var; | |
17504 | } | |
17505 | ||
df58fc94 RS |
17506 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17507 | { | |
17508 | offsetT old_var = fragp->fr_var; | |
17509 | offsetT new_var = 4; | |
17510 | ||
17511 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17512 | new_var = relaxed_micromips_16bit_branch_length (fragp, sec, TRUE); | |
17513 | if (new_var == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17514 | new_var = relaxed_micromips_32bit_branch_length (fragp, sec, TRUE); | |
17515 | fragp->fr_var = new_var; | |
17516 | ||
17517 | return new_var - old_var; | |
17518 | } | |
17519 | ||
252b5132 RH |
17520 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
17521 | return 0; | |
17522 | ||
c4e7957c | 17523 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
17524 | { |
17525 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17526 | return 0; | |
17527 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
17528 | return 2; | |
17529 | } | |
17530 | else | |
17531 | { | |
17532 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17533 | return 0; | |
17534 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
17535 | return -2; | |
17536 | } | |
17537 | ||
17538 | return 0; | |
17539 | } | |
17540 | ||
17541 | /* Convert a machine dependent frag. */ | |
17542 | ||
17543 | void | |
17a2f251 | 17544 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 17545 | { |
4a6a3df4 AO |
17546 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17547 | { | |
17548 | bfd_byte *buf; | |
17549 | unsigned long insn; | |
17550 | expressionS exp; | |
17551 | fixS *fixp; | |
b34976b6 | 17552 | |
4a6a3df4 AO |
17553 | buf = (bfd_byte *)fragp->fr_literal + fragp->fr_fix; |
17554 | ||
17555 | if (target_big_endian) | |
17556 | insn = bfd_getb32 (buf); | |
17557 | else | |
17558 | insn = bfd_getl32 (buf); | |
b34976b6 | 17559 | |
4a6a3df4 AO |
17560 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
17561 | { | |
17562 | /* We generate a fixup instead of applying it right now | |
17563 | because, if there are linker relaxations, we're going to | |
17564 | need the relocations. */ | |
17565 | exp.X_op = O_symbol; | |
17566 | exp.X_add_symbol = fragp->fr_symbol; | |
17567 | exp.X_add_number = fragp->fr_offset; | |
17568 | ||
17569 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17570 | 4, &exp, TRUE, BFD_RELOC_16_PCREL_S2); |
4a6a3df4 AO |
17571 | fixp->fx_file = fragp->fr_file; |
17572 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 17573 | |
2132e3a3 | 17574 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17575 | buf += 4; |
17576 | } | |
17577 | else | |
17578 | { | |
17579 | int i; | |
17580 | ||
17581 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
5c4f07ba | 17582 | _("Relaxed out-of-range branch into a jump")); |
4a6a3df4 AO |
17583 | |
17584 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
17585 | goto uncond; | |
17586 | ||
17587 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17588 | { | |
17589 | /* Reverse the branch. */ | |
17590 | switch ((insn >> 28) & 0xf) | |
17591 | { | |
17592 | case 4: | |
17593 | /* bc[0-3][tf]l? and bc1any[24][ft] instructions can | |
17594 | have the condition reversed by tweaking a single | |
17595 | bit, and their opcodes all have 0x4???????. */ | |
9c2799c2 | 17596 | gas_assert ((insn & 0xf1000000) == 0x41000000); |
4a6a3df4 AO |
17597 | insn ^= 0x00010000; |
17598 | break; | |
17599 | ||
17600 | case 0: | |
17601 | /* bltz 0x04000000 bgez 0x04010000 | |
54f4ddb3 | 17602 | bltzal 0x04100000 bgezal 0x04110000 */ |
9c2799c2 | 17603 | gas_assert ((insn & 0xfc0e0000) == 0x04000000); |
4a6a3df4 AO |
17604 | insn ^= 0x00010000; |
17605 | break; | |
b34976b6 | 17606 | |
4a6a3df4 AO |
17607 | case 1: |
17608 | /* beq 0x10000000 bne 0x14000000 | |
54f4ddb3 | 17609 | blez 0x18000000 bgtz 0x1c000000 */ |
4a6a3df4 AO |
17610 | insn ^= 0x04000000; |
17611 | break; | |
17612 | ||
17613 | default: | |
17614 | abort (); | |
17615 | } | |
17616 | } | |
17617 | ||
17618 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
17619 | { | |
17620 | /* Clear the and-link bit. */ | |
9c2799c2 | 17621 | gas_assert ((insn & 0xfc1c0000) == 0x04100000); |
4a6a3df4 | 17622 | |
54f4ddb3 TS |
17623 | /* bltzal 0x04100000 bgezal 0x04110000 |
17624 | bltzall 0x04120000 bgezall 0x04130000 */ | |
4a6a3df4 AO |
17625 | insn &= ~0x00100000; |
17626 | } | |
17627 | ||
17628 | /* Branch over the branch (if the branch was likely) or the | |
17629 | full jump (not likely case). Compute the offset from the | |
17630 | current instruction to branch to. */ | |
17631 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17632 | i = 16; | |
17633 | else | |
17634 | { | |
17635 | /* How many bytes in instructions we've already emitted? */ | |
17636 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
17637 | /* How many bytes in instructions from here to the end? */ | |
17638 | i = fragp->fr_var - i; | |
17639 | } | |
17640 | /* Convert to instruction count. */ | |
17641 | i >>= 2; | |
17642 | /* Branch counts from the next instruction. */ | |
b34976b6 | 17643 | i--; |
4a6a3df4 AO |
17644 | insn |= i; |
17645 | /* Branch over the jump. */ | |
2132e3a3 | 17646 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17647 | buf += 4; |
17648 | ||
54f4ddb3 | 17649 | /* nop */ |
2132e3a3 | 17650 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
17651 | buf += 4; |
17652 | ||
17653 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17654 | { | |
17655 | /* beql $0, $0, 2f */ | |
17656 | insn = 0x50000000; | |
17657 | /* Compute the PC offset from the current instruction to | |
17658 | the end of the variable frag. */ | |
17659 | /* How many bytes in instructions we've already emitted? */ | |
17660 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
17661 | /* How many bytes in instructions from here to the end? */ | |
17662 | i = fragp->fr_var - i; | |
17663 | /* Convert to instruction count. */ | |
17664 | i >>= 2; | |
17665 | /* Don't decrement i, because we want to branch over the | |
17666 | delay slot. */ | |
17667 | ||
17668 | insn |= i; | |
2132e3a3 | 17669 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17670 | buf += 4; |
17671 | ||
2132e3a3 | 17672 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
17673 | buf += 4; |
17674 | } | |
17675 | ||
17676 | uncond: | |
17677 | if (mips_pic == NO_PIC) | |
17678 | { | |
17679 | /* j or jal. */ | |
17680 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
17681 | ? 0x0c000000 : 0x08000000); | |
17682 | exp.X_op = O_symbol; | |
17683 | exp.X_add_symbol = fragp->fr_symbol; | |
17684 | exp.X_add_number = fragp->fr_offset; | |
17685 | ||
17686 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17687 | 4, &exp, FALSE, BFD_RELOC_MIPS_JMP); |
4a6a3df4 AO |
17688 | fixp->fx_file = fragp->fr_file; |
17689 | fixp->fx_line = fragp->fr_line; | |
17690 | ||
2132e3a3 | 17691 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17692 | buf += 4; |
17693 | } | |
17694 | else | |
17695 | { | |
66b3e8da MR |
17696 | unsigned long at = RELAX_BRANCH_AT (fragp->fr_subtype); |
17697 | ||
4a6a3df4 | 17698 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ |
66b3e8da MR |
17699 | insn = HAVE_64BIT_ADDRESSES ? 0xdf800000 : 0x8f800000; |
17700 | insn |= at << OP_SH_RT; | |
4a6a3df4 AO |
17701 | exp.X_op = O_symbol; |
17702 | exp.X_add_symbol = fragp->fr_symbol; | |
17703 | exp.X_add_number = fragp->fr_offset; | |
17704 | ||
17705 | if (fragp->fr_offset) | |
17706 | { | |
17707 | exp.X_add_symbol = make_expr_symbol (&exp); | |
17708 | exp.X_add_number = 0; | |
17709 | } | |
17710 | ||
17711 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17712 | 4, &exp, FALSE, BFD_RELOC_MIPS_GOT16); |
4a6a3df4 AO |
17713 | fixp->fx_file = fragp->fr_file; |
17714 | fixp->fx_line = fragp->fr_line; | |
17715 | ||
2132e3a3 | 17716 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 | 17717 | buf += 4; |
b34976b6 | 17718 | |
4a6a3df4 AO |
17719 | if (mips_opts.isa == ISA_MIPS1) |
17720 | { | |
17721 | /* nop */ | |
2132e3a3 | 17722 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
17723 | buf += 4; |
17724 | } | |
17725 | ||
17726 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
66b3e8da MR |
17727 | insn = HAVE_64BIT_ADDRESSES ? 0x64000000 : 0x24000000; |
17728 | insn |= at << OP_SH_RS | at << OP_SH_RT; | |
4a6a3df4 AO |
17729 | |
17730 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17731 | 4, &exp, FALSE, BFD_RELOC_LO16); |
4a6a3df4 AO |
17732 | fixp->fx_file = fragp->fr_file; |
17733 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 17734 | |
2132e3a3 | 17735 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17736 | buf += 4; |
17737 | ||
17738 | /* j(al)r $at. */ | |
17739 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
66b3e8da | 17740 | insn = 0x0000f809; |
4a6a3df4 | 17741 | else |
66b3e8da MR |
17742 | insn = 0x00000008; |
17743 | insn |= at << OP_SH_RS; | |
4a6a3df4 | 17744 | |
2132e3a3 | 17745 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17746 | buf += 4; |
17747 | } | |
17748 | } | |
17749 | ||
9c2799c2 | 17750 | gas_assert (buf == (bfd_byte *)fragp->fr_literal |
4a6a3df4 AO |
17751 | + fragp->fr_fix + fragp->fr_var); |
17752 | ||
17753 | fragp->fr_fix += fragp->fr_var; | |
17754 | ||
17755 | return; | |
17756 | } | |
17757 | ||
df58fc94 RS |
17758 | /* Relax microMIPS branches. */ |
17759 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) | |
17760 | { | |
17761 | bfd_byte *buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
17762 | bfd_boolean compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); | |
17763 | bfd_boolean al = RELAX_MICROMIPS_LINK (fragp->fr_subtype); | |
17764 | int type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
2309ddf2 | 17765 | bfd_boolean short_ds; |
df58fc94 RS |
17766 | unsigned long insn; |
17767 | expressionS exp; | |
17768 | fixS *fixp; | |
17769 | ||
17770 | exp.X_op = O_symbol; | |
17771 | exp.X_add_symbol = fragp->fr_symbol; | |
17772 | exp.X_add_number = fragp->fr_offset; | |
17773 | ||
17774 | fragp->fr_fix += fragp->fr_var; | |
17775 | ||
17776 | /* Handle 16-bit branches that fit or are forced to fit. */ | |
17777 | if (type != 0 && !RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
17778 | { | |
17779 | /* We generate a fixup instead of applying it right now, | |
17780 | because if there is linker relaxation, we're going to | |
17781 | need the relocations. */ | |
17782 | if (type == 'D') | |
17783 | fixp = fix_new_exp (fragp, | |
17784 | buf - (bfd_byte *) fragp->fr_literal, | |
17785 | 2, &exp, TRUE, | |
17786 | BFD_RELOC_MICROMIPS_10_PCREL_S1); | |
17787 | else if (type == 'E') | |
17788 | fixp = fix_new_exp (fragp, | |
17789 | buf - (bfd_byte *) fragp->fr_literal, | |
17790 | 2, &exp, TRUE, | |
17791 | BFD_RELOC_MICROMIPS_7_PCREL_S1); | |
17792 | else | |
17793 | abort (); | |
17794 | ||
17795 | fixp->fx_file = fragp->fr_file; | |
17796 | fixp->fx_line = fragp->fr_line; | |
17797 | ||
17798 | /* These relocations can have an addend that won't fit in | |
17799 | 2 octets. */ | |
17800 | fixp->fx_no_overflow = 1; | |
17801 | ||
17802 | return; | |
17803 | } | |
17804 | ||
2309ddf2 | 17805 | /* Handle 32-bit branches that fit or are forced to fit. */ |
df58fc94 RS |
17806 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) |
17807 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17808 | { | |
17809 | /* We generate a fixup instead of applying it right now, | |
17810 | because if there is linker relaxation, we're going to | |
17811 | need the relocations. */ | |
17812 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
17813 | 4, &exp, TRUE, BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
17814 | fixp->fx_file = fragp->fr_file; | |
17815 | fixp->fx_line = fragp->fr_line; | |
17816 | ||
17817 | if (type == 0) | |
17818 | return; | |
17819 | } | |
17820 | ||
17821 | /* Relax 16-bit branches to 32-bit branches. */ | |
17822 | if (type != 0) | |
17823 | { | |
17824 | if (target_big_endian) | |
17825 | insn = bfd_getb16 (buf); | |
17826 | else | |
17827 | insn = bfd_getl16 (buf); | |
17828 | ||
17829 | if ((insn & 0xfc00) == 0xcc00) /* b16 */ | |
17830 | insn = 0x94000000; /* beq */ | |
17831 | else if ((insn & 0xdc00) == 0x8c00) /* beqz16/bnez16 */ | |
17832 | { | |
17833 | unsigned long regno; | |
17834 | ||
17835 | regno = (insn >> MICROMIPSOP_SH_MD) & MICROMIPSOP_MASK_MD; | |
17836 | regno = micromips_to_32_reg_d_map [regno]; | |
17837 | insn = ((insn & 0x2000) << 16) | 0x94000000; /* beq/bne */ | |
17838 | insn |= regno << MICROMIPSOP_SH_RS; | |
17839 | } | |
17840 | else | |
17841 | abort (); | |
17842 | ||
17843 | /* Nothing else to do, just write it out. */ | |
17844 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) | |
17845 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17846 | { | |
17847 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
17848 | buf += 2; | |
17849 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
17850 | buf += 2; | |
17851 | ||
17852 | gas_assert (buf == ((bfd_byte *) fragp->fr_literal | |
17853 | + fragp->fr_fix)); | |
17854 | return; | |
17855 | } | |
17856 | } | |
17857 | else | |
17858 | { | |
17859 | unsigned long next; | |
17860 | ||
17861 | if (target_big_endian) | |
17862 | { | |
17863 | insn = bfd_getb16 (buf); | |
17864 | next = bfd_getb16 (buf + 2); | |
17865 | } | |
17866 | else | |
17867 | { | |
17868 | insn = bfd_getl16 (buf); | |
17869 | next = bfd_getl16 (buf + 2); | |
17870 | } | |
17871 | insn = (insn << 16) | next; | |
17872 | } | |
17873 | ||
17874 | /* Relax 32-bit branches to a sequence of instructions. */ | |
17875 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
17876 | _("Relaxed out-of-range branch into a jump")); | |
17877 | ||
2309ddf2 MR |
17878 | /* Set the short-delay-slot bit. */ |
17879 | short_ds = al && (insn & 0x02000000) != 0; | |
df58fc94 RS |
17880 | |
17881 | if (!RELAX_MICROMIPS_UNCOND (fragp->fr_subtype)) | |
17882 | { | |
17883 | symbolS *l; | |
17884 | ||
17885 | /* Reverse the branch. */ | |
17886 | if ((insn & 0xfc000000) == 0x94000000 /* beq */ | |
17887 | || (insn & 0xfc000000) == 0xb4000000) /* bne */ | |
17888 | insn ^= 0x20000000; | |
17889 | else if ((insn & 0xffe00000) == 0x40000000 /* bltz */ | |
17890 | || (insn & 0xffe00000) == 0x40400000 /* bgez */ | |
17891 | || (insn & 0xffe00000) == 0x40800000 /* blez */ | |
17892 | || (insn & 0xffe00000) == 0x40c00000 /* bgtz */ | |
17893 | || (insn & 0xffe00000) == 0x40a00000 /* bnezc */ | |
17894 | || (insn & 0xffe00000) == 0x40e00000 /* beqzc */ | |
17895 | || (insn & 0xffe00000) == 0x40200000 /* bltzal */ | |
17896 | || (insn & 0xffe00000) == 0x40600000 /* bgezal */ | |
17897 | || (insn & 0xffe00000) == 0x42200000 /* bltzals */ | |
17898 | || (insn & 0xffe00000) == 0x42600000) /* bgezals */ | |
17899 | insn ^= 0x00400000; | |
17900 | else if ((insn & 0xffe30000) == 0x43800000 /* bc1f */ | |
17901 | || (insn & 0xffe30000) == 0x43a00000 /* bc1t */ | |
17902 | || (insn & 0xffe30000) == 0x42800000 /* bc2f */ | |
17903 | || (insn & 0xffe30000) == 0x42a00000) /* bc2t */ | |
17904 | insn ^= 0x00200000; | |
17905 | else | |
17906 | abort (); | |
17907 | ||
17908 | if (al) | |
17909 | { | |
17910 | /* Clear the and-link and short-delay-slot bits. */ | |
17911 | gas_assert ((insn & 0xfda00000) == 0x40200000); | |
17912 | ||
17913 | /* bltzal 0x40200000 bgezal 0x40600000 */ | |
17914 | /* bltzals 0x42200000 bgezals 0x42600000 */ | |
17915 | insn &= ~0x02200000; | |
17916 | } | |
17917 | ||
17918 | /* Make a label at the end for use with the branch. */ | |
17919 | l = symbol_new (micromips_label_name (), asec, fragp->fr_fix, fragp); | |
17920 | micromips_label_inc (); | |
17921 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
17922 | if (IS_ELF) | |
17923 | S_SET_OTHER (l, ELF_ST_SET_MICROMIPS (S_GET_OTHER (l))); | |
17924 | #endif | |
17925 | ||
17926 | /* Refer to it. */ | |
17927 | fixp = fix_new (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
17928 | 4, l, 0, TRUE, BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
17929 | fixp->fx_file = fragp->fr_file; | |
17930 | fixp->fx_line = fragp->fr_line; | |
17931 | ||
17932 | /* Branch over the jump. */ | |
17933 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
17934 | buf += 2; | |
17935 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
17936 | buf += 2; | |
17937 | ||
17938 | if (!compact) | |
17939 | { | |
17940 | /* nop */ | |
17941 | insn = 0x0c00; | |
17942 | md_number_to_chars ((char *) buf, insn, 2); | |
17943 | buf += 2; | |
17944 | } | |
17945 | } | |
17946 | ||
17947 | if (mips_pic == NO_PIC) | |
17948 | { | |
2309ddf2 MR |
17949 | unsigned long jal = short_ds ? 0x74000000 : 0xf4000000; /* jal/s */ |
17950 | ||
df58fc94 RS |
17951 | /* j/jal/jals <sym> R_MICROMIPS_26_S1 */ |
17952 | insn = al ? jal : 0xd4000000; | |
17953 | ||
17954 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
17955 | 4, &exp, FALSE, BFD_RELOC_MICROMIPS_JMP); | |
17956 | fixp->fx_file = fragp->fr_file; | |
17957 | fixp->fx_line = fragp->fr_line; | |
17958 | ||
17959 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
17960 | buf += 2; | |
17961 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
17962 | buf += 2; | |
17963 | ||
17964 | if (compact) | |
17965 | { | |
17966 | /* nop */ | |
17967 | insn = 0x0c00; | |
17968 | md_number_to_chars ((char *) buf, insn, 2); | |
17969 | buf += 2; | |
17970 | } | |
17971 | } | |
17972 | else | |
17973 | { | |
17974 | unsigned long at = RELAX_MICROMIPS_AT (fragp->fr_subtype); | |
2309ddf2 MR |
17975 | unsigned long jalr = short_ds ? 0x45e0 : 0x45c0; /* jalr/s */ |
17976 | unsigned long jr = compact ? 0x45a0 : 0x4580; /* jr/c */ | |
df58fc94 RS |
17977 | |
17978 | /* lw/ld $at, <sym>($gp) R_MICROMIPS_GOT16 */ | |
17979 | insn = HAVE_64BIT_ADDRESSES ? 0xdc1c0000 : 0xfc1c0000; | |
17980 | insn |= at << MICROMIPSOP_SH_RT; | |
17981 | ||
17982 | if (exp.X_add_number) | |
17983 | { | |
17984 | exp.X_add_symbol = make_expr_symbol (&exp); | |
17985 | exp.X_add_number = 0; | |
17986 | } | |
17987 | ||
17988 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
17989 | 4, &exp, FALSE, BFD_RELOC_MICROMIPS_GOT16); | |
17990 | fixp->fx_file = fragp->fr_file; | |
17991 | fixp->fx_line = fragp->fr_line; | |
17992 | ||
17993 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
17994 | buf += 2; | |
17995 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
17996 | buf += 2; | |
17997 | ||
17998 | /* d/addiu $at, $at, <sym> R_MICROMIPS_LO16 */ | |
17999 | insn = HAVE_64BIT_ADDRESSES ? 0x5c000000 : 0x30000000; | |
18000 | insn |= at << MICROMIPSOP_SH_RT | at << MICROMIPSOP_SH_RS; | |
18001 | ||
18002 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
18003 | 4, &exp, FALSE, BFD_RELOC_MICROMIPS_LO16); | |
18004 | fixp->fx_file = fragp->fr_file; | |
18005 | fixp->fx_line = fragp->fr_line; | |
18006 | ||
18007 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
18008 | buf += 2; | |
18009 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18010 | buf += 2; | |
18011 | ||
18012 | /* jr/jrc/jalr/jalrs $at */ | |
18013 | insn = al ? jalr : jr; | |
18014 | insn |= at << MICROMIPSOP_SH_MJ; | |
18015 | ||
18016 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18017 | buf += 2; | |
18018 | } | |
18019 | ||
18020 | gas_assert (buf == (bfd_byte *) fragp->fr_literal + fragp->fr_fix); | |
18021 | return; | |
18022 | } | |
18023 | ||
252b5132 RH |
18024 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
18025 | { | |
18026 | int type; | |
3994f87e | 18027 | const struct mips16_immed_operand *op; |
b34976b6 | 18028 | bfd_boolean small, ext; |
252b5132 RH |
18029 | offsetT val; |
18030 | bfd_byte *buf; | |
18031 | unsigned long insn; | |
b34976b6 | 18032 | bfd_boolean use_extend; |
252b5132 RH |
18033 | unsigned short extend; |
18034 | ||
18035 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
18036 | op = mips16_immed_operands; | |
18037 | while (op->type != type) | |
18038 | ++op; | |
18039 | ||
18040 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
18041 | { | |
b34976b6 AM |
18042 | small = FALSE; |
18043 | ext = TRUE; | |
252b5132 RH |
18044 | } |
18045 | else | |
18046 | { | |
b34976b6 AM |
18047 | small = TRUE; |
18048 | ext = FALSE; | |
252b5132 RH |
18049 | } |
18050 | ||
5f5f22c0 | 18051 | val = resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
18052 | if (op->pcrel) |
18053 | { | |
18054 | addressT addr; | |
18055 | ||
18056 | addr = fragp->fr_address + fragp->fr_fix; | |
18057 | ||
18058 | /* The rules for the base address of a PC relative reloc are | |
18059 | complicated; see mips16_extended_frag. */ | |
18060 | if (type == 'p' || type == 'q') | |
18061 | { | |
18062 | addr += 2; | |
18063 | if (ext) | |
18064 | addr += 2; | |
18065 | /* Ignore the low bit in the target, since it will be | |
18066 | set for a text label. */ | |
18067 | if ((val & 1) != 0) | |
18068 | --val; | |
18069 | } | |
18070 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
18071 | addr -= 4; | |
18072 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
18073 | addr -= 2; | |
18074 | ||
18075 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
18076 | val -= addr; | |
18077 | ||
18078 | /* Make sure the section winds up with the alignment we have | |
18079 | assumed. */ | |
18080 | if (op->shift > 0) | |
18081 | record_alignment (asec, op->shift); | |
18082 | } | |
18083 | ||
18084 | if (ext | |
18085 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
18086 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
18087 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
18088 | _("extended instruction in delay slot")); | |
18089 | ||
18090 | buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
18091 | ||
18092 | if (target_big_endian) | |
18093 | insn = bfd_getb16 (buf); | |
18094 | else | |
18095 | insn = bfd_getl16 (buf); | |
18096 | ||
18097 | mips16_immed (fragp->fr_file, fragp->fr_line, type, val, | |
18098 | RELAX_MIPS16_USER_EXT (fragp->fr_subtype), | |
18099 | small, ext, &insn, &use_extend, &extend); | |
18100 | ||
18101 | if (use_extend) | |
18102 | { | |
2132e3a3 | 18103 | md_number_to_chars ((char *) buf, 0xf000 | extend, 2); |
252b5132 RH |
18104 | fragp->fr_fix += 2; |
18105 | buf += 2; | |
18106 | } | |
18107 | ||
2132e3a3 | 18108 | md_number_to_chars ((char *) buf, insn, 2); |
252b5132 RH |
18109 | fragp->fr_fix += 2; |
18110 | buf += 2; | |
18111 | } | |
18112 | else | |
18113 | { | |
df58fc94 RS |
18114 | relax_substateT subtype = fragp->fr_subtype; |
18115 | bfd_boolean second_longer = (subtype & RELAX_SECOND_LONGER) != 0; | |
18116 | bfd_boolean use_second = (subtype & RELAX_USE_SECOND) != 0; | |
4d7206a2 RS |
18117 | int first, second; |
18118 | fixS *fixp; | |
252b5132 | 18119 | |
df58fc94 RS |
18120 | first = RELAX_FIRST (subtype); |
18121 | second = RELAX_SECOND (subtype); | |
4d7206a2 | 18122 | fixp = (fixS *) fragp->fr_opcode; |
252b5132 | 18123 | |
df58fc94 RS |
18124 | /* If the delay slot chosen does not match the size of the instruction, |
18125 | then emit a warning. */ | |
18126 | if ((!use_second && (subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0) | |
18127 | || (use_second && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0)) | |
18128 | { | |
18129 | relax_substateT s; | |
18130 | const char *msg; | |
18131 | ||
18132 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
18133 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
18134 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
18135 | msg = macro_warning (s); | |
18136 | if (msg != NULL) | |
18137 | as_warn_where (fragp->fr_file, fragp->fr_line, msg); | |
18138 | subtype &= ~s; | |
18139 | } | |
18140 | ||
584892a6 | 18141 | /* Possibly emit a warning if we've chosen the longer option. */ |
df58fc94 | 18142 | if (use_second == second_longer) |
584892a6 | 18143 | { |
df58fc94 RS |
18144 | relax_substateT s; |
18145 | const char *msg; | |
18146 | ||
18147 | s = (subtype | |
18148 | & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT)); | |
18149 | msg = macro_warning (s); | |
18150 | if (msg != NULL) | |
18151 | as_warn_where (fragp->fr_file, fragp->fr_line, msg); | |
18152 | subtype &= ~s; | |
584892a6 RS |
18153 | } |
18154 | ||
4d7206a2 RS |
18155 | /* Go through all the fixups for the first sequence. Disable them |
18156 | (by marking them as done) if we're going to use the second | |
18157 | sequence instead. */ | |
18158 | while (fixp | |
18159 | && fixp->fx_frag == fragp | |
18160 | && fixp->fx_where < fragp->fr_fix - second) | |
18161 | { | |
df58fc94 | 18162 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18163 | fixp->fx_done = 1; |
18164 | fixp = fixp->fx_next; | |
18165 | } | |
252b5132 | 18166 | |
4d7206a2 RS |
18167 | /* Go through the fixups for the second sequence. Disable them if |
18168 | we're going to use the first sequence, otherwise adjust their | |
18169 | addresses to account for the relaxation. */ | |
18170 | while (fixp && fixp->fx_frag == fragp) | |
18171 | { | |
df58fc94 | 18172 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18173 | fixp->fx_where -= first; |
18174 | else | |
18175 | fixp->fx_done = 1; | |
18176 | fixp = fixp->fx_next; | |
18177 | } | |
18178 | ||
18179 | /* Now modify the frag contents. */ | |
df58fc94 | 18180 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18181 | { |
18182 | char *start; | |
18183 | ||
18184 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
18185 | memmove (start, start + first, second); | |
18186 | fragp->fr_fix -= first; | |
18187 | } | |
18188 | else | |
18189 | fragp->fr_fix -= second; | |
252b5132 RH |
18190 | } |
18191 | } | |
18192 | ||
18193 | #ifdef OBJ_ELF | |
18194 | ||
18195 | /* This function is called after the relocs have been generated. | |
18196 | We've been storing mips16 text labels as odd. Here we convert them | |
18197 | back to even for the convenience of the debugger. */ | |
18198 | ||
18199 | void | |
17a2f251 | 18200 | mips_frob_file_after_relocs (void) |
252b5132 RH |
18201 | { |
18202 | asymbol **syms; | |
18203 | unsigned int count, i; | |
18204 | ||
f43abd2b | 18205 | if (!IS_ELF) |
252b5132 RH |
18206 | return; |
18207 | ||
18208 | syms = bfd_get_outsymbols (stdoutput); | |
18209 | count = bfd_get_symcount (stdoutput); | |
18210 | for (i = 0; i < count; i++, syms++) | |
df58fc94 RS |
18211 | if (ELF_ST_IS_COMPRESSED (elf_symbol (*syms)->internal_elf_sym.st_other) |
18212 | && ((*syms)->value & 1) != 0) | |
18213 | { | |
18214 | (*syms)->value &= ~1; | |
18215 | /* If the symbol has an odd size, it was probably computed | |
18216 | incorrectly, so adjust that as well. */ | |
18217 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
18218 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
18219 | } | |
252b5132 RH |
18220 | } |
18221 | ||
18222 | #endif | |
18223 | ||
a1facbec MR |
18224 | /* This function is called whenever a label is defined, including fake |
18225 | labels instantiated off the dot special symbol. It is used when | |
18226 | handling branch delays; if a branch has a label, we assume we cannot | |
18227 | move it. This also bumps the value of the symbol by 1 in compressed | |
18228 | code. */ | |
252b5132 RH |
18229 | |
18230 | void | |
a1facbec | 18231 | mips_record_label (symbolS *sym) |
252b5132 | 18232 | { |
a8dbcb85 | 18233 | segment_info_type *si = seg_info (now_seg); |
252b5132 RH |
18234 | struct insn_label_list *l; |
18235 | ||
18236 | if (free_insn_labels == NULL) | |
18237 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
18238 | else | |
18239 | { | |
18240 | l = free_insn_labels; | |
18241 | free_insn_labels = l->next; | |
18242 | } | |
18243 | ||
18244 | l->label = sym; | |
a8dbcb85 TS |
18245 | l->next = si->label_list; |
18246 | si->label_list = l; | |
a1facbec | 18247 | } |
07a53e5c | 18248 | |
a1facbec MR |
18249 | /* This function is called as tc_frob_label() whenever a label is defined |
18250 | and adds a DWARF-2 record we only want for true labels. */ | |
18251 | ||
18252 | void | |
18253 | mips_define_label (symbolS *sym) | |
18254 | { | |
18255 | mips_record_label (sym); | |
07a53e5c RH |
18256 | #ifdef OBJ_ELF |
18257 | dwarf2_emit_label (sym); | |
18258 | #endif | |
252b5132 RH |
18259 | } |
18260 | \f | |
18261 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
18262 | ||
18263 | /* Some special processing for a MIPS ELF file. */ | |
18264 | ||
18265 | void | |
17a2f251 | 18266 | mips_elf_final_processing (void) |
252b5132 RH |
18267 | { |
18268 | /* Write out the register information. */ | |
316f5878 | 18269 | if (mips_abi != N64_ABI) |
252b5132 RH |
18270 | { |
18271 | Elf32_RegInfo s; | |
18272 | ||
18273 | s.ri_gprmask = mips_gprmask; | |
18274 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18275 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18276 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18277 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18278 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18279 | ||
18280 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
18281 | ((Elf32_External_RegInfo *) | |
18282 | mips_regmask_frag)); | |
18283 | } | |
18284 | else | |
18285 | { | |
18286 | Elf64_Internal_RegInfo s; | |
18287 | ||
18288 | s.ri_gprmask = mips_gprmask; | |
18289 | s.ri_pad = 0; | |
18290 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18291 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18292 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18293 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18294 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18295 | ||
18296 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
18297 | ((Elf64_External_RegInfo *) | |
18298 | mips_regmask_frag)); | |
18299 | } | |
18300 | ||
18301 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
18302 | sort of BFD interface for this. */ | |
18303 | if (mips_any_noreorder) | |
18304 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
18305 | if (mips_pic != NO_PIC) | |
143d77c5 | 18306 | { |
252b5132 | 18307 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
18308 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
18309 | } | |
18310 | if (mips_abicalls) | |
18311 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 18312 | |
98d3f06f | 18313 | /* Set MIPS ELF flags for ASEs. */ |
74cd071d CF |
18314 | /* We may need to define a new flag for DSP ASE, and set this flag when |
18315 | file_ase_dsp is true. */ | |
8b082fb1 | 18316 | /* Same for DSP R2. */ |
ef2e4d86 CF |
18317 | /* We may need to define a new flag for MT ASE, and set this flag when |
18318 | file_ase_mt is true. */ | |
a4672219 TS |
18319 | if (file_ase_mips16) |
18320 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
df58fc94 RS |
18321 | if (file_ase_micromips) |
18322 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MICROMIPS; | |
1f25f5d3 CD |
18323 | #if 0 /* XXX FIXME */ |
18324 | if (file_ase_mips3d) | |
18325 | elf_elfheader (stdoutput)->e_flags |= ???; | |
18326 | #endif | |
deec1734 CD |
18327 | if (file_ase_mdmx) |
18328 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 18329 | |
bdaaa2e1 | 18330 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 18331 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 18332 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 18333 | else if (mips_abi == O64_ABI) |
252b5132 | 18334 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 18335 | else if (mips_abi == EABI_ABI) |
252b5132 | 18336 | { |
316f5878 | 18337 | if (!file_mips_gp32) |
252b5132 RH |
18338 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
18339 | else | |
18340 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
18341 | } | |
316f5878 | 18342 | else if (mips_abi == N32_ABI) |
be00bddd TS |
18343 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
18344 | ||
c9914766 | 18345 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
18346 | |
18347 | if (mips_32bitmode) | |
18348 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 TS |
18349 | |
18350 | #if 0 /* XXX FIXME */ | |
18351 | /* 32 bit code with 64 bit FP registers. */ | |
18352 | if (!file_mips_fp32 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
18353 | elf_elfheader (stdoutput)->e_flags |= ???; | |
18354 | #endif | |
252b5132 RH |
18355 | } |
18356 | ||
18357 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
18358 | \f | |
beae10d5 | 18359 | typedef struct proc { |
9b2f1d35 EC |
18360 | symbolS *func_sym; |
18361 | symbolS *func_end_sym; | |
beae10d5 KH |
18362 | unsigned long reg_mask; |
18363 | unsigned long reg_offset; | |
18364 | unsigned long fpreg_mask; | |
18365 | unsigned long fpreg_offset; | |
18366 | unsigned long frame_offset; | |
18367 | unsigned long frame_reg; | |
18368 | unsigned long pc_reg; | |
18369 | } procS; | |
252b5132 RH |
18370 | |
18371 | static procS cur_proc; | |
18372 | static procS *cur_proc_ptr; | |
18373 | static int numprocs; | |
18374 | ||
df58fc94 RS |
18375 | /* Implement NOP_OPCODE. We encode a MIPS16 nop as "1", a microMIPS nop |
18376 | as "2", and a normal nop as "0". */ | |
18377 | ||
18378 | #define NOP_OPCODE_MIPS 0 | |
18379 | #define NOP_OPCODE_MIPS16 1 | |
18380 | #define NOP_OPCODE_MICROMIPS 2 | |
742a56fe RS |
18381 | |
18382 | char | |
18383 | mips_nop_opcode (void) | |
18384 | { | |
df58fc94 RS |
18385 | if (seg_info (now_seg)->tc_segment_info_data.micromips) |
18386 | return NOP_OPCODE_MICROMIPS; | |
18387 | else if (seg_info (now_seg)->tc_segment_info_data.mips16) | |
18388 | return NOP_OPCODE_MIPS16; | |
18389 | else | |
18390 | return NOP_OPCODE_MIPS; | |
742a56fe RS |
18391 | } |
18392 | ||
df58fc94 RS |
18393 | /* Fill in an rs_align_code fragment. Unlike elsewhere we want to use |
18394 | 32-bit microMIPS NOPs here (if applicable). */ | |
a19d8eb0 | 18395 | |
0a9ef439 | 18396 | void |
17a2f251 | 18397 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 18398 | { |
df58fc94 | 18399 | char nop_opcode; |
742a56fe | 18400 | char *p; |
c67a084a NC |
18401 | int bytes, size, excess; |
18402 | valueT opcode; | |
742a56fe | 18403 | |
0a9ef439 RH |
18404 | if (fragp->fr_type != rs_align_code) |
18405 | return; | |
18406 | ||
742a56fe | 18407 | p = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
18408 | nop_opcode = *p; |
18409 | switch (nop_opcode) | |
a19d8eb0 | 18410 | { |
df58fc94 RS |
18411 | case NOP_OPCODE_MICROMIPS: |
18412 | opcode = micromips_nop32_insn.insn_opcode; | |
18413 | size = 4; | |
18414 | break; | |
18415 | case NOP_OPCODE_MIPS16: | |
c67a084a NC |
18416 | opcode = mips16_nop_insn.insn_opcode; |
18417 | size = 2; | |
df58fc94 RS |
18418 | break; |
18419 | case NOP_OPCODE_MIPS: | |
18420 | default: | |
c67a084a NC |
18421 | opcode = nop_insn.insn_opcode; |
18422 | size = 4; | |
df58fc94 | 18423 | break; |
c67a084a | 18424 | } |
a19d8eb0 | 18425 | |
c67a084a NC |
18426 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
18427 | excess = bytes % size; | |
df58fc94 RS |
18428 | |
18429 | /* Handle the leading part if we're not inserting a whole number of | |
18430 | instructions, and make it the end of the fixed part of the frag. | |
18431 | Try to fit in a short microMIPS NOP if applicable and possible, | |
18432 | and use zeroes otherwise. */ | |
18433 | gas_assert (excess < 4); | |
18434 | fragp->fr_fix += excess; | |
18435 | switch (excess) | |
c67a084a | 18436 | { |
df58fc94 RS |
18437 | case 3: |
18438 | *p++ = '\0'; | |
18439 | /* Fall through. */ | |
18440 | case 2: | |
18441 | if (nop_opcode == NOP_OPCODE_MICROMIPS) | |
18442 | { | |
18443 | md_number_to_chars (p, micromips_nop16_insn.insn_opcode, 2); | |
18444 | p += 2; | |
18445 | break; | |
18446 | } | |
18447 | *p++ = '\0'; | |
18448 | /* Fall through. */ | |
18449 | case 1: | |
18450 | *p++ = '\0'; | |
18451 | /* Fall through. */ | |
18452 | case 0: | |
18453 | break; | |
a19d8eb0 | 18454 | } |
c67a084a NC |
18455 | |
18456 | md_number_to_chars (p, opcode, size); | |
18457 | fragp->fr_var = size; | |
a19d8eb0 CP |
18458 | } |
18459 | ||
252b5132 | 18460 | static void |
17a2f251 | 18461 | md_obj_begin (void) |
252b5132 RH |
18462 | { |
18463 | } | |
18464 | ||
18465 | static void | |
17a2f251 | 18466 | md_obj_end (void) |
252b5132 | 18467 | { |
54f4ddb3 | 18468 | /* Check for premature end, nesting errors, etc. */ |
252b5132 | 18469 | if (cur_proc_ptr) |
9a41af64 | 18470 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
18471 | } |
18472 | ||
18473 | static long | |
17a2f251 | 18474 | get_number (void) |
252b5132 RH |
18475 | { |
18476 | int negative = 0; | |
18477 | long val = 0; | |
18478 | ||
18479 | if (*input_line_pointer == '-') | |
18480 | { | |
18481 | ++input_line_pointer; | |
18482 | negative = 1; | |
18483 | } | |
3882b010 | 18484 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 18485 | as_bad (_("expected simple number")); |
252b5132 RH |
18486 | if (input_line_pointer[0] == '0') |
18487 | { | |
18488 | if (input_line_pointer[1] == 'x') | |
18489 | { | |
18490 | input_line_pointer += 2; | |
3882b010 | 18491 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
18492 | { |
18493 | val <<= 4; | |
18494 | val |= hex_value (*input_line_pointer++); | |
18495 | } | |
18496 | return negative ? -val : val; | |
18497 | } | |
18498 | else | |
18499 | { | |
18500 | ++input_line_pointer; | |
3882b010 | 18501 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18502 | { |
18503 | val <<= 3; | |
18504 | val |= *input_line_pointer++ - '0'; | |
18505 | } | |
18506 | return negative ? -val : val; | |
18507 | } | |
18508 | } | |
3882b010 | 18509 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18510 | { |
18511 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
18512 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 18513 | as_warn (_("invalid number")); |
252b5132 RH |
18514 | return -1; |
18515 | } | |
3882b010 | 18516 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18517 | { |
18518 | val *= 10; | |
18519 | val += *input_line_pointer++ - '0'; | |
18520 | } | |
18521 | return negative ? -val : val; | |
18522 | } | |
18523 | ||
18524 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
18525 | is an initial number which is the ECOFF file index. In the non-ECOFF |
18526 | case .file implies DWARF-2. */ | |
18527 | ||
18528 | static void | |
17a2f251 | 18529 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 18530 | { |
ecb4347a DJ |
18531 | static int first_file_directive = 0; |
18532 | ||
c5dd6aab DJ |
18533 | if (ECOFF_DEBUGGING) |
18534 | { | |
18535 | get_number (); | |
18536 | s_app_file (0); | |
18537 | } | |
18538 | else | |
ecb4347a DJ |
18539 | { |
18540 | char *filename; | |
18541 | ||
18542 | filename = dwarf2_directive_file (0); | |
18543 | ||
18544 | /* Versions of GCC up to 3.1 start files with a ".file" | |
18545 | directive even for stabs output. Make sure that this | |
18546 | ".file" is handled. Note that you need a version of GCC | |
18547 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
18548 | if (filename != NULL && ! first_file_directive) | |
18549 | { | |
18550 | (void) new_logical_line (filename, -1); | |
c04f5787 | 18551 | s_app_file_string (filename, 0); |
ecb4347a DJ |
18552 | } |
18553 | first_file_directive = 1; | |
18554 | } | |
c5dd6aab DJ |
18555 | } |
18556 | ||
18557 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
18558 | |
18559 | static void | |
17a2f251 | 18560 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 18561 | { |
c5dd6aab DJ |
18562 | if (!ECOFF_DEBUGGING) |
18563 | dwarf2_directive_loc (0); | |
252b5132 RH |
18564 | } |
18565 | ||
252b5132 RH |
18566 | /* The .end directive. */ |
18567 | ||
18568 | static void | |
17a2f251 | 18569 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
18570 | { |
18571 | symbolS *p; | |
252b5132 | 18572 | |
7a621144 DJ |
18573 | /* Following functions need their own .frame and .cprestore directives. */ |
18574 | mips_frame_reg_valid = 0; | |
18575 | mips_cprestore_valid = 0; | |
18576 | ||
252b5132 RH |
18577 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
18578 | { | |
18579 | p = get_symbol (); | |
18580 | demand_empty_rest_of_line (); | |
18581 | } | |
18582 | else | |
18583 | p = NULL; | |
18584 | ||
14949570 | 18585 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
18586 | as_warn (_(".end not in text section")); |
18587 | ||
18588 | if (!cur_proc_ptr) | |
18589 | { | |
18590 | as_warn (_(".end directive without a preceding .ent directive.")); | |
18591 | demand_empty_rest_of_line (); | |
18592 | return; | |
18593 | } | |
18594 | ||
18595 | if (p != NULL) | |
18596 | { | |
9c2799c2 | 18597 | gas_assert (S_GET_NAME (p)); |
9b2f1d35 | 18598 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
252b5132 | 18599 | as_warn (_(".end symbol does not match .ent symbol.")); |
ecb4347a DJ |
18600 | |
18601 | if (debug_type == DEBUG_STABS) | |
18602 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
18603 | S_GET_NAME (p)); | |
252b5132 RH |
18604 | } |
18605 | else | |
18606 | as_warn (_(".end directive missing or unknown symbol")); | |
18607 | ||
2132e3a3 | 18608 | #ifdef OBJ_ELF |
9b2f1d35 EC |
18609 | /* Create an expression to calculate the size of the function. */ |
18610 | if (p && cur_proc_ptr) | |
18611 | { | |
18612 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
18613 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
18614 | ||
18615 | obj->size = exp; | |
18616 | exp->X_op = O_subtract; | |
18617 | exp->X_add_symbol = symbol_temp_new_now (); | |
18618 | exp->X_op_symbol = p; | |
18619 | exp->X_add_number = 0; | |
18620 | ||
18621 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
18622 | } | |
18623 | ||
ecb4347a | 18624 | /* Generate a .pdr section. */ |
f43abd2b | 18625 | if (IS_ELF && !ECOFF_DEBUGGING && mips_flag_pdr) |
ecb4347a DJ |
18626 | { |
18627 | segT saved_seg = now_seg; | |
18628 | subsegT saved_subseg = now_subseg; | |
ecb4347a DJ |
18629 | expressionS exp; |
18630 | char *fragp; | |
252b5132 | 18631 | |
252b5132 | 18632 | #ifdef md_flush_pending_output |
ecb4347a | 18633 | md_flush_pending_output (); |
252b5132 RH |
18634 | #endif |
18635 | ||
9c2799c2 | 18636 | gas_assert (pdr_seg); |
ecb4347a | 18637 | subseg_set (pdr_seg, 0); |
252b5132 | 18638 | |
ecb4347a DJ |
18639 | /* Write the symbol. */ |
18640 | exp.X_op = O_symbol; | |
18641 | exp.X_add_symbol = p; | |
18642 | exp.X_add_number = 0; | |
18643 | emit_expr (&exp, 4); | |
252b5132 | 18644 | |
ecb4347a | 18645 | fragp = frag_more (7 * 4); |
252b5132 | 18646 | |
17a2f251 TS |
18647 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
18648 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
18649 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
18650 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
18651 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
18652 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
18653 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 18654 | |
ecb4347a DJ |
18655 | subseg_set (saved_seg, saved_subseg); |
18656 | } | |
18657 | #endif /* OBJ_ELF */ | |
252b5132 RH |
18658 | |
18659 | cur_proc_ptr = NULL; | |
18660 | } | |
18661 | ||
18662 | /* The .aent and .ent directives. */ | |
18663 | ||
18664 | static void | |
17a2f251 | 18665 | s_mips_ent (int aent) |
252b5132 | 18666 | { |
252b5132 | 18667 | symbolS *symbolP; |
252b5132 RH |
18668 | |
18669 | symbolP = get_symbol (); | |
18670 | if (*input_line_pointer == ',') | |
f9419b05 | 18671 | ++input_line_pointer; |
252b5132 | 18672 | SKIP_WHITESPACE (); |
3882b010 | 18673 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 18674 | || *input_line_pointer == '-') |
874e8986 | 18675 | get_number (); |
252b5132 | 18676 | |
14949570 | 18677 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
18678 | as_warn (_(".ent or .aent not in text section.")); |
18679 | ||
18680 | if (!aent && cur_proc_ptr) | |
9a41af64 | 18681 | as_warn (_("missing .end")); |
252b5132 RH |
18682 | |
18683 | if (!aent) | |
18684 | { | |
7a621144 DJ |
18685 | /* This function needs its own .frame and .cprestore directives. */ |
18686 | mips_frame_reg_valid = 0; | |
18687 | mips_cprestore_valid = 0; | |
18688 | ||
252b5132 RH |
18689 | cur_proc_ptr = &cur_proc; |
18690 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
18691 | ||
9b2f1d35 | 18692 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 18693 | |
f9419b05 | 18694 | ++numprocs; |
ecb4347a DJ |
18695 | |
18696 | if (debug_type == DEBUG_STABS) | |
18697 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
18698 | S_GET_NAME (symbolP)); | |
252b5132 RH |
18699 | } |
18700 | ||
7c0fc524 MR |
18701 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
18702 | ||
252b5132 RH |
18703 | demand_empty_rest_of_line (); |
18704 | } | |
18705 | ||
18706 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 18707 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 18708 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 18709 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
18710 | symbol table (in the mdebug section). */ |
18711 | ||
18712 | static void | |
17a2f251 | 18713 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 18714 | { |
ecb4347a | 18715 | #ifdef OBJ_ELF |
f43abd2b | 18716 | if (IS_ELF && !ECOFF_DEBUGGING) |
ecb4347a DJ |
18717 | { |
18718 | long val; | |
252b5132 | 18719 | |
ecb4347a DJ |
18720 | if (cur_proc_ptr == (procS *) NULL) |
18721 | { | |
18722 | as_warn (_(".frame outside of .ent")); | |
18723 | demand_empty_rest_of_line (); | |
18724 | return; | |
18725 | } | |
252b5132 | 18726 | |
ecb4347a DJ |
18727 | cur_proc_ptr->frame_reg = tc_get_register (1); |
18728 | ||
18729 | SKIP_WHITESPACE (); | |
18730 | if (*input_line_pointer++ != ',' | |
18731 | || get_absolute_expression_and_terminator (&val) != ',') | |
18732 | { | |
18733 | as_warn (_("Bad .frame directive")); | |
18734 | --input_line_pointer; | |
18735 | demand_empty_rest_of_line (); | |
18736 | return; | |
18737 | } | |
252b5132 | 18738 | |
ecb4347a DJ |
18739 | cur_proc_ptr->frame_offset = val; |
18740 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 18741 | |
252b5132 | 18742 | demand_empty_rest_of_line (); |
252b5132 | 18743 | } |
ecb4347a DJ |
18744 | else |
18745 | #endif /* OBJ_ELF */ | |
18746 | s_ignore (ignore); | |
252b5132 RH |
18747 | } |
18748 | ||
bdaaa2e1 KH |
18749 | /* The .fmask and .mask directives. If the mdebug section is present |
18750 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 18751 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 18752 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
18753 | make reference to the ecoff symbol table (in the mdebug section). */ |
18754 | ||
18755 | static void | |
17a2f251 | 18756 | s_mips_mask (int reg_type) |
252b5132 | 18757 | { |
ecb4347a | 18758 | #ifdef OBJ_ELF |
f43abd2b | 18759 | if (IS_ELF && !ECOFF_DEBUGGING) |
252b5132 | 18760 | { |
ecb4347a | 18761 | long mask, off; |
252b5132 | 18762 | |
ecb4347a DJ |
18763 | if (cur_proc_ptr == (procS *) NULL) |
18764 | { | |
18765 | as_warn (_(".mask/.fmask outside of .ent")); | |
18766 | demand_empty_rest_of_line (); | |
18767 | return; | |
18768 | } | |
252b5132 | 18769 | |
ecb4347a DJ |
18770 | if (get_absolute_expression_and_terminator (&mask) != ',') |
18771 | { | |
18772 | as_warn (_("Bad .mask/.fmask directive")); | |
18773 | --input_line_pointer; | |
18774 | demand_empty_rest_of_line (); | |
18775 | return; | |
18776 | } | |
252b5132 | 18777 | |
ecb4347a DJ |
18778 | off = get_absolute_expression (); |
18779 | ||
18780 | if (reg_type == 'F') | |
18781 | { | |
18782 | cur_proc_ptr->fpreg_mask = mask; | |
18783 | cur_proc_ptr->fpreg_offset = off; | |
18784 | } | |
18785 | else | |
18786 | { | |
18787 | cur_proc_ptr->reg_mask = mask; | |
18788 | cur_proc_ptr->reg_offset = off; | |
18789 | } | |
18790 | ||
18791 | demand_empty_rest_of_line (); | |
252b5132 RH |
18792 | } |
18793 | else | |
ecb4347a DJ |
18794 | #endif /* OBJ_ELF */ |
18795 | s_ignore (reg_type); | |
252b5132 RH |
18796 | } |
18797 | ||
316f5878 RS |
18798 | /* A table describing all the processors gas knows about. Names are |
18799 | matched in the order listed. | |
e7af610e | 18800 | |
316f5878 RS |
18801 | To ease comparison, please keep this table in the same order as |
18802 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
18803 | static const struct mips_cpu_info mips_cpu_info_table[] = |
18804 | { | |
316f5878 | 18805 | /* Entries for generic ISAs */ |
ad3fea08 TS |
18806 | { "mips1", MIPS_CPU_IS_ISA, ISA_MIPS1, CPU_R3000 }, |
18807 | { "mips2", MIPS_CPU_IS_ISA, ISA_MIPS2, CPU_R6000 }, | |
18808 | { "mips3", MIPS_CPU_IS_ISA, ISA_MIPS3, CPU_R4000 }, | |
18809 | { "mips4", MIPS_CPU_IS_ISA, ISA_MIPS4, CPU_R8000 }, | |
18810 | { "mips5", MIPS_CPU_IS_ISA, ISA_MIPS5, CPU_MIPS5 }, | |
18811 | { "mips32", MIPS_CPU_IS_ISA, ISA_MIPS32, CPU_MIPS32 }, | |
18812 | { "mips32r2", MIPS_CPU_IS_ISA, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18813 | { "mips64", MIPS_CPU_IS_ISA, ISA_MIPS64, CPU_MIPS64 }, | |
18814 | { "mips64r2", MIPS_CPU_IS_ISA, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
316f5878 RS |
18815 | |
18816 | /* MIPS I */ | |
ad3fea08 TS |
18817 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, |
18818 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
18819 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
18820 | |
18821 | /* MIPS II */ | |
ad3fea08 | 18822 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
18823 | |
18824 | /* MIPS III */ | |
ad3fea08 TS |
18825 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, |
18826 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
18827 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
18828 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
18829 | { "vr4120", 0, ISA_MIPS3, CPU_VR4120 }, | |
18830 | { "vr4130", 0, ISA_MIPS3, CPU_VR4120 }, | |
18831 | { "vr4181", 0, ISA_MIPS3, CPU_R4111 }, | |
18832 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, | |
18833 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
18834 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
18835 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
18836 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
b15591bb AN |
18837 | /* ST Microelectronics Loongson 2E and 2F cores */ |
18838 | { "loongson2e", 0, ISA_MIPS3, CPU_LOONGSON_2E }, | |
18839 | { "loongson2f", 0, ISA_MIPS3, CPU_LOONGSON_2F }, | |
316f5878 RS |
18840 | |
18841 | /* MIPS IV */ | |
ad3fea08 TS |
18842 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, |
18843 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
18844 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
3aa3176b TS |
18845 | { "r14000", 0, ISA_MIPS4, CPU_R14000 }, |
18846 | { "r16000", 0, ISA_MIPS4, CPU_R16000 }, | |
ad3fea08 TS |
18847 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, |
18848 | { "vr5400", 0, ISA_MIPS4, CPU_VR5400 }, | |
18849 | { "vr5500", 0, ISA_MIPS4, CPU_VR5500 }, | |
18850 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, | |
18851 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
18852 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
18853 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
18854 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
18855 | { "rm7000", 0, ISA_MIPS4, CPU_RM7000 }, | |
18856 | { "rm9000", 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
18857 | |
18858 | /* MIPS 32 */ | |
ad3fea08 TS |
18859 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32 }, |
18860 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
18861 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
18862 | { "4ksc", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
18863 | ||
18864 | /* MIPS 32 Release 2 */ | |
18865 | { "4kec", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18866 | { "4kem", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18867 | { "4kep", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18868 | { "4ksd", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18869 | { "m4k", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18870 | { "m4kp", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 18871 | { "24kc", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 18872 | { "24kf2_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 18873 | { "24kf", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
18874 | { "24kf1_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18875 | /* Deprecated forms of the above. */ | |
18876 | { "24kfx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 18877 | { "24kx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 18878 | /* 24KE is a 24K with DSP ASE, other ASEs are optional. */ |
ad3fea08 | 18879 | { "24kec", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 18880 | { "24kef2_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 18881 | { "24kef", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
18882 | { "24kef1_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
18883 | /* Deprecated forms of the above. */ | |
18884 | { "24kefx", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
65263ce3 | 18885 | { "24kex", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 18886 | /* 34K is a 24K with DSP and MT ASE, other ASEs are optional. */ |
a360e743 TS |
18887 | { "34kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
18888 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
18889 | { "34kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
18890 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
18891 | { "34kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
18892 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
18893 | { "34kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
18894 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18895 | /* Deprecated forms of the above. */ | |
18896 | { "34kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
18897 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
18898 | { "34kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
18899 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
18900 | /* 74K with DSP and DSPR2 ASE, other ASEs are optional. */ |
18901 | { "74kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
18902 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
18903 | { "74kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
18904 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
18905 | { "74kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
18906 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
18907 | { "74kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
18908 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18909 | { "74kf3_2", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
18910 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18911 | /* Deprecated forms of the above. */ | |
18912 | { "74kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
18913 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
18914 | { "74kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
18915 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
30f8113a SL |
18916 | /* 1004K cores are multiprocessor versions of the 34K. */ |
18917 | { "1004kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
18918 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18919 | { "1004kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
18920 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18921 | { "1004kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
18922 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18923 | { "1004kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
18924 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
32b26a03 | 18925 | |
316f5878 | 18926 | /* MIPS 64 */ |
ad3fea08 TS |
18927 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, |
18928 | { "5kf", 0, ISA_MIPS64, CPU_MIPS64 }, | |
18929 | { "20kc", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
7764b395 | 18930 | { "25kf", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, |
ad3fea08 | 18931 | |
c7a23324 | 18932 | /* Broadcom SB-1 CPU core */ |
65263ce3 TS |
18933 | { "sb1", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, |
18934 | ISA_MIPS64, CPU_SB1 }, | |
1e85aad8 JW |
18935 | /* Broadcom SB-1A CPU core */ |
18936 | { "sb1a", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, | |
18937 | ISA_MIPS64, CPU_SB1 }, | |
d051516a NC |
18938 | |
18939 | { "loongson3a", 0, ISA_MIPS64, CPU_LOONGSON_3A }, | |
e7af610e | 18940 | |
ed163775 MR |
18941 | /* MIPS 64 Release 2 */ |
18942 | ||
967344c6 AN |
18943 | /* Cavium Networks Octeon CPU core */ |
18944 | { "octeon", 0, ISA_MIPS64R2, CPU_OCTEON }, | |
18945 | ||
52b6b6b9 JM |
18946 | /* RMI Xlr */ |
18947 | { "xlr", 0, ISA_MIPS64, CPU_XLR }, | |
18948 | ||
316f5878 RS |
18949 | /* End marker */ |
18950 | { NULL, 0, 0, 0 } | |
18951 | }; | |
e7af610e | 18952 | |
84ea6cf2 | 18953 | |
316f5878 RS |
18954 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
18955 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 18956 | |
316f5878 | 18957 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 18958 | |
b34976b6 | 18959 | static bfd_boolean |
17a2f251 | 18960 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
18961 | { |
18962 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
18963 | given++, canonical++; | |
18964 | ||
18965 | return ((*given == 0 && *canonical == 0) | |
18966 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
18967 | } | |
18968 | ||
18969 | ||
18970 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
18971 | CPU name. We've traditionally allowed a lot of variation here. | |
18972 | ||
18973 | Note: this function is shared between GCC and GAS. */ | |
18974 | ||
b34976b6 | 18975 | static bfd_boolean |
17a2f251 | 18976 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
18977 | { |
18978 | /* First see if the name matches exactly, or with a final "000" | |
18979 | turned into "k". */ | |
18980 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 18981 | return TRUE; |
316f5878 RS |
18982 | |
18983 | /* If not, try comparing based on numerical designation alone. | |
18984 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
18985 | if (TOLOWER (*given) == 'r') | |
18986 | given++; | |
18987 | if (!ISDIGIT (*given)) | |
b34976b6 | 18988 | return FALSE; |
316f5878 RS |
18989 | |
18990 | /* Skip over some well-known prefixes in the canonical name, | |
18991 | hoping to find a number there too. */ | |
18992 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
18993 | canonical += 2; | |
18994 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
18995 | canonical += 2; | |
18996 | else if (TOLOWER (canonical[0]) == 'r') | |
18997 | canonical += 1; | |
18998 | ||
18999 | return mips_strict_matching_cpu_name_p (canonical, given); | |
19000 | } | |
19001 | ||
19002 | ||
19003 | /* Parse an option that takes the name of a processor as its argument. | |
19004 | OPTION is the name of the option and CPU_STRING is the argument. | |
19005 | Return the corresponding processor enumeration if the CPU_STRING is | |
19006 | recognized, otherwise report an error and return null. | |
19007 | ||
19008 | A similar function exists in GCC. */ | |
e7af610e NC |
19009 | |
19010 | static const struct mips_cpu_info * | |
17a2f251 | 19011 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 19012 | { |
316f5878 | 19013 | const struct mips_cpu_info *p; |
e7af610e | 19014 | |
316f5878 RS |
19015 | /* 'from-abi' selects the most compatible architecture for the given |
19016 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
19017 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
19018 | version. Look first at the -mgp options, if given, otherwise base | |
19019 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 19020 | |
316f5878 RS |
19021 | Treat NO_ABI like the EABIs. One reason to do this is that the |
19022 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
19023 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
19024 | 'mips64', just as we did in the days before 'from-abi'. */ | |
19025 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
19026 | { | |
19027 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
19028 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
19029 | ||
19030 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
19031 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
19032 | ||
19033 | if (file_mips_gp32 >= 0) | |
19034 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
19035 | ||
19036 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
19037 | ? ISA_MIPS3 | |
19038 | : ISA_MIPS1); | |
19039 | } | |
19040 | ||
19041 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
19042 | if (strcasecmp (cpu_string, "default") == 0) | |
19043 | return 0; | |
19044 | ||
19045 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
19046 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
19047 | return p; | |
19048 | ||
20203fb9 | 19049 | as_bad (_("Bad value (%s) for %s"), cpu_string, option); |
316f5878 | 19050 | return 0; |
e7af610e NC |
19051 | } |
19052 | ||
316f5878 RS |
19053 | /* Return the canonical processor information for ISA (a member of the |
19054 | ISA_MIPS* enumeration). */ | |
19055 | ||
e7af610e | 19056 | static const struct mips_cpu_info * |
17a2f251 | 19057 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
19058 | { |
19059 | int i; | |
19060 | ||
19061 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 19062 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 19063 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
19064 | return (&mips_cpu_info_table[i]); |
19065 | ||
e972090a | 19066 | return NULL; |
e7af610e | 19067 | } |
fef14a42 TS |
19068 | |
19069 | static const struct mips_cpu_info * | |
17a2f251 | 19070 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
19071 | { |
19072 | int i; | |
19073 | ||
19074 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
19075 | if (arch == mips_cpu_info_table[i].cpu) | |
19076 | return (&mips_cpu_info_table[i]); | |
19077 | ||
19078 | return NULL; | |
19079 | } | |
316f5878 RS |
19080 | \f |
19081 | static void | |
17a2f251 | 19082 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
19083 | { |
19084 | if (*first_p) | |
19085 | { | |
19086 | fprintf (stream, "%24s", ""); | |
19087 | *col_p = 24; | |
19088 | } | |
19089 | else | |
19090 | { | |
19091 | fprintf (stream, ", "); | |
19092 | *col_p += 2; | |
19093 | } | |
e7af610e | 19094 | |
316f5878 RS |
19095 | if (*col_p + strlen (string) > 72) |
19096 | { | |
19097 | fprintf (stream, "\n%24s", ""); | |
19098 | *col_p = 24; | |
19099 | } | |
19100 | ||
19101 | fprintf (stream, "%s", string); | |
19102 | *col_p += strlen (string); | |
19103 | ||
19104 | *first_p = 0; | |
19105 | } | |
19106 | ||
19107 | void | |
17a2f251 | 19108 | md_show_usage (FILE *stream) |
e7af610e | 19109 | { |
316f5878 RS |
19110 | int column, first; |
19111 | size_t i; | |
19112 | ||
19113 | fprintf (stream, _("\ | |
19114 | MIPS options:\n\ | |
316f5878 RS |
19115 | -EB generate big endian output\n\ |
19116 | -EL generate little endian output\n\ | |
19117 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
19118 | -G NUM allow referencing objects up to NUM bytes\n\ | |
19119 | implicitly with the gp register [default 8]\n")); | |
19120 | fprintf (stream, _("\ | |
19121 | -mips1 generate MIPS ISA I instructions\n\ | |
19122 | -mips2 generate MIPS ISA II instructions\n\ | |
19123 | -mips3 generate MIPS ISA III instructions\n\ | |
19124 | -mips4 generate MIPS ISA IV instructions\n\ | |
19125 | -mips5 generate MIPS ISA V instructions\n\ | |
19126 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 19127 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 | 19128 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 19129 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
316f5878 RS |
19130 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
19131 | ||
19132 | first = 1; | |
e7af610e NC |
19133 | |
19134 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
19135 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
19136 | show (stream, "from-abi", &column, &first); | |
19137 | fputc ('\n', stream); | |
e7af610e | 19138 | |
316f5878 RS |
19139 | fprintf (stream, _("\ |
19140 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
19141 | -no-mCPU don't generate code specific to CPU.\n\ | |
19142 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
19143 | ||
19144 | first = 1; | |
19145 | ||
19146 | show (stream, "3900", &column, &first); | |
19147 | show (stream, "4010", &column, &first); | |
19148 | show (stream, "4100", &column, &first); | |
19149 | show (stream, "4650", &column, &first); | |
19150 | fputc ('\n', stream); | |
19151 | ||
19152 | fprintf (stream, _("\ | |
19153 | -mips16 generate mips16 instructions\n\ | |
19154 | -no-mips16 do not generate mips16 instructions\n")); | |
19155 | fprintf (stream, _("\ | |
df58fc94 RS |
19156 | -mmicromips generate microMIPS instructions\n\ |
19157 | -mno-micromips do not generate microMIPS instructions\n")); | |
19158 | fprintf (stream, _("\ | |
e16bfa71 TS |
19159 | -msmartmips generate smartmips instructions\n\ |
19160 | -mno-smartmips do not generate smartmips instructions\n")); | |
19161 | fprintf (stream, _("\ | |
74cd071d CF |
19162 | -mdsp generate DSP instructions\n\ |
19163 | -mno-dsp do not generate DSP instructions\n")); | |
19164 | fprintf (stream, _("\ | |
8b082fb1 TS |
19165 | -mdspr2 generate DSP R2 instructions\n\ |
19166 | -mno-dspr2 do not generate DSP R2 instructions\n")); | |
19167 | fprintf (stream, _("\ | |
ef2e4d86 CF |
19168 | -mmt generate MT instructions\n\ |
19169 | -mno-mt do not generate MT instructions\n")); | |
19170 | fprintf (stream, _("\ | |
c67a084a NC |
19171 | -mfix-loongson2f-jump work around Loongson2F JUMP instructions\n\ |
19172 | -mfix-loongson2f-nop work around Loongson2F NOP errata\n\ | |
d766e8ec | 19173 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 19174 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
6a32d874 | 19175 | -mfix-24k insert a nop after ERET and DERET instructions\n\ |
d954098f | 19176 | -mfix-cn63xxp1 work around CN63XXP1 PREF errata\n\ |
316f5878 RS |
19177 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
19178 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 | 19179 | -msym32 assume all symbols have 32-bit values\n\ |
316f5878 RS |
19180 | -O0 remove unneeded NOPs, do not swap branches\n\ |
19181 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
19182 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ |
19183 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
037b32b9 AN |
19184 | fprintf (stream, _("\ |
19185 | -mhard-float allow floating-point instructions\n\ | |
19186 | -msoft-float do not allow floating-point instructions\n\ | |
19187 | -msingle-float only allow 32-bit floating-point operations\n\ | |
19188 | -mdouble-float allow 32-bit and 64-bit floating-point operations\n\ | |
19189 | --[no-]construct-floats [dis]allow floating point values to be constructed\n" | |
19190 | )); | |
316f5878 RS |
19191 | #ifdef OBJ_ELF |
19192 | fprintf (stream, _("\ | |
19193 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
861fb55a | 19194 | -call_nonpic generate non-PIC code that can operate with DSOs\n\ |
0c000745 | 19195 | -mvxworks-pic generate VxWorks position independent code\n\ |
861fb55a | 19196 | -non_shared do not generate code that can operate with DSOs\n\ |
316f5878 | 19197 | -xgot assume a 32 bit GOT\n\ |
dcd410fe | 19198 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 | 19199 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
d821e36b | 19200 | position dependent (non shared) code\n\ |
316f5878 RS |
19201 | -mabi=ABI create ABI conformant object file for:\n")); |
19202 | ||
19203 | first = 1; | |
19204 | ||
19205 | show (stream, "32", &column, &first); | |
19206 | show (stream, "o64", &column, &first); | |
19207 | show (stream, "n32", &column, &first); | |
19208 | show (stream, "64", &column, &first); | |
19209 | show (stream, "eabi", &column, &first); | |
19210 | ||
19211 | fputc ('\n', stream); | |
19212 | ||
19213 | fprintf (stream, _("\ | |
19214 | -32 create o32 ABI object file (default)\n\ | |
19215 | -n32 create n32 ABI object file\n\ | |
19216 | -64 create 64 ABI object file\n")); | |
19217 | #endif | |
e7af610e | 19218 | } |
14e777e0 | 19219 | |
1575952e | 19220 | #ifdef TE_IRIX |
14e777e0 | 19221 | enum dwarf2_format |
413a266c | 19222 | mips_dwarf2_format (asection *sec ATTRIBUTE_UNUSED) |
14e777e0 | 19223 | { |
369943fe | 19224 | if (HAVE_64BIT_SYMBOLS) |
1575952e | 19225 | return dwarf2_format_64bit_irix; |
14e777e0 KB |
19226 | else |
19227 | return dwarf2_format_32bit; | |
19228 | } | |
1575952e | 19229 | #endif |
73369e65 EC |
19230 | |
19231 | int | |
19232 | mips_dwarf2_addr_size (void) | |
19233 | { | |
6b6b3450 | 19234 | if (HAVE_64BIT_OBJECTS) |
73369e65 | 19235 | return 8; |
73369e65 EC |
19236 | else |
19237 | return 4; | |
19238 | } | |
5862107c EC |
19239 | |
19240 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
19241 | void | |
19242 | mips_cfi_frame_initial_instructions (void) | |
19243 | { | |
19244 | cfi_add_CFA_def_cfa_register (SP); | |
19245 | } | |
19246 | ||
707bfff6 TS |
19247 | int |
19248 | tc_mips_regname_to_dw2regnum (char *regname) | |
19249 | { | |
19250 | unsigned int regnum = -1; | |
19251 | unsigned int reg; | |
19252 | ||
19253 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
19254 | regnum = reg; | |
19255 | ||
19256 | return regnum; | |
19257 | } |