Commit | Line | Data |
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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 |
252b5132 RH |
94 | #define TREG 24 |
95 | #define PIC_CALL_REG 25 | |
96 | #define KT0 26 | |
97 | #define KT1 27 | |
98 | #define GP 28 | |
99 | #define SP 29 | |
100 | #define FP 30 | |
101 | #define RA 31 | |
102 | ||
103 | #define ILLEGAL_REG (32) | |
104 | ||
741fe287 MR |
105 | #define AT mips_opts.at |
106 | ||
252b5132 RH |
107 | /* Allow override of standard little-endian ECOFF format. */ |
108 | ||
109 | #ifndef ECOFF_LITTLE_FORMAT | |
110 | #define ECOFF_LITTLE_FORMAT "ecoff-littlemips" | |
111 | #endif | |
112 | ||
113 | extern int target_big_endian; | |
114 | ||
252b5132 | 115 | /* The name of the readonly data section. */ |
4d0d148d | 116 | #define RDATA_SECTION_NAME (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ |
252b5132 | 117 | ? ".rdata" \ |
056350c6 NC |
118 | : OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
119 | ? ".rdata" \ | |
252b5132 RH |
120 | : OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
121 | ? ".rodata" \ | |
122 | : (abort (), "")) | |
123 | ||
47e39b9d RS |
124 | /* Information about an instruction, including its format, operands |
125 | and fixups. */ | |
126 | struct mips_cl_insn | |
127 | { | |
128 | /* The opcode's entry in mips_opcodes or mips16_opcodes. */ | |
129 | const struct mips_opcode *insn_mo; | |
130 | ||
131 | /* True if this is a mips16 instruction and if we want the extended | |
132 | form of INSN_MO. */ | |
133 | bfd_boolean use_extend; | |
134 | ||
135 | /* The 16-bit extension instruction to use when USE_EXTEND is true. */ | |
136 | unsigned short extend; | |
137 | ||
138 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is | |
139 | a copy of INSN_MO->match with the operands filled in. */ | |
140 | unsigned long insn_opcode; | |
141 | ||
142 | /* The frag that contains the instruction. */ | |
143 | struct frag *frag; | |
144 | ||
145 | /* The offset into FRAG of the first instruction byte. */ | |
146 | long where; | |
147 | ||
148 | /* The relocs associated with the instruction, if any. */ | |
149 | fixS *fixp[3]; | |
150 | ||
a38419a5 RS |
151 | /* True if this entry cannot be moved from its current position. */ |
152 | unsigned int fixed_p : 1; | |
47e39b9d | 153 | |
708587a4 | 154 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
155 | unsigned int noreorder_p : 1; |
156 | ||
2fa15973 RS |
157 | /* True for mips16 instructions that jump to an absolute address. */ |
158 | unsigned int mips16_absolute_jump_p : 1; | |
47e39b9d RS |
159 | }; |
160 | ||
a325df1d TS |
161 | /* The ABI to use. */ |
162 | enum mips_abi_level | |
163 | { | |
164 | NO_ABI = 0, | |
165 | O32_ABI, | |
166 | O64_ABI, | |
167 | N32_ABI, | |
168 | N64_ABI, | |
169 | EABI_ABI | |
170 | }; | |
171 | ||
172 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 173 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 174 | |
143d77c5 EC |
175 | /* Whether or not we have code that can call pic code. */ |
176 | int mips_abicalls = FALSE; | |
177 | ||
aa6975fb ILT |
178 | /* Whether or not we have code which can be put into a shared |
179 | library. */ | |
180 | static bfd_boolean mips_in_shared = TRUE; | |
181 | ||
252b5132 RH |
182 | /* This is the set of options which may be modified by the .set |
183 | pseudo-op. We use a struct so that .set push and .set pop are more | |
184 | reliable. */ | |
185 | ||
e972090a NC |
186 | struct mips_set_options |
187 | { | |
252b5132 RH |
188 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
189 | if it has not been initialized. Changed by `.set mipsN', and the | |
190 | -mipsN command line option, and the default CPU. */ | |
191 | int isa; | |
1f25f5d3 CD |
192 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
193 | if they have not been initialized. Changed by `.set <asename>', by | |
194 | command line options, and based on the default architecture. */ | |
195 | int ase_mips3d; | |
deec1734 | 196 | int ase_mdmx; |
e16bfa71 | 197 | int ase_smartmips; |
74cd071d | 198 | int ase_dsp; |
8b082fb1 | 199 | int ase_dspr2; |
ef2e4d86 | 200 | int ase_mt; |
252b5132 RH |
201 | /* Whether we are assembling for the mips16 processor. 0 if we are |
202 | not, 1 if we are, and -1 if the value has not been initialized. | |
203 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
204 | -nomips16 command line options, and the default CPU. */ | |
205 | int mips16; | |
206 | /* Non-zero if we should not reorder instructions. Changed by `.set | |
207 | reorder' and `.set noreorder'. */ | |
208 | int noreorder; | |
741fe287 MR |
209 | /* Non-zero if we should not permit the register designated "assembler |
210 | temporary" to be used in instructions. The value is the register | |
211 | number, normally $at ($1). Changed by `.set at=REG', `.set noat' | |
212 | (same as `.set at=$0') and `.set at' (same as `.set at=$1'). */ | |
213 | unsigned int at; | |
252b5132 RH |
214 | /* Non-zero if we should warn when a macro instruction expands into |
215 | more than one machine instruction. Changed by `.set nomacro' and | |
216 | `.set macro'. */ | |
217 | int warn_about_macros; | |
218 | /* Non-zero if we should not move instructions. Changed by `.set | |
219 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
220 | int nomove; | |
221 | /* Non-zero if we should not optimize branches by moving the target | |
222 | of the branch into the delay slot. Actually, we don't perform | |
223 | this optimization anyhow. Changed by `.set bopt' and `.set | |
224 | nobopt'. */ | |
225 | int nobopt; | |
226 | /* Non-zero if we should not autoextend mips16 instructions. | |
227 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
228 | int noautoextend; | |
a325df1d TS |
229 | /* Restrict general purpose registers and floating point registers |
230 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
231 | is passed but can changed if the assembler code uses .set mipsN. */ | |
232 | int gp32; | |
233 | int fp32; | |
fef14a42 TS |
234 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
235 | command line option, and the default CPU. */ | |
236 | int arch; | |
aed1a261 RS |
237 | /* True if ".set sym32" is in effect. */ |
238 | bfd_boolean sym32; | |
037b32b9 AN |
239 | /* True if floating-point operations are not allowed. Changed by .set |
240 | softfloat or .set hardfloat, by command line options -msoft-float or | |
241 | -mhard-float. The default is false. */ | |
242 | bfd_boolean soft_float; | |
243 | ||
244 | /* True if only single-precision floating-point operations are allowed. | |
245 | Changed by .set singlefloat or .set doublefloat, command-line options | |
246 | -msingle-float or -mdouble-float. The default is false. */ | |
247 | bfd_boolean single_float; | |
252b5132 RH |
248 | }; |
249 | ||
037b32b9 AN |
250 | /* This is the struct we use to hold the current set of options. Note |
251 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to | |
252 | -1 to indicate that they have not been initialized. */ | |
253 | ||
a325df1d | 254 | /* True if -mgp32 was passed. */ |
a8e8e863 | 255 | static int file_mips_gp32 = -1; |
a325df1d TS |
256 | |
257 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 258 | static int file_mips_fp32 = -1; |
a325df1d | 259 | |
037b32b9 AN |
260 | /* 1 if -msoft-float, 0 if -mhard-float. The default is 0. */ |
261 | static int file_mips_soft_float = 0; | |
262 | ||
263 | /* 1 if -msingle-float, 0 if -mdouble-float. The default is 0. */ | |
264 | static int file_mips_single_float = 0; | |
252b5132 | 265 | |
e972090a NC |
266 | static struct mips_set_options mips_opts = |
267 | { | |
037b32b9 AN |
268 | /* isa */ ISA_UNKNOWN, /* ase_mips3d */ -1, /* ase_mdmx */ -1, |
269 | /* ase_smartmips */ 0, /* ase_dsp */ -1, /* ase_dspr2 */ -1, /* ase_mt */ -1, | |
270 | /* mips16 */ -1, /* noreorder */ 0, /* at */ ATREG, | |
271 | /* warn_about_macros */ 0, /* nomove */ 0, /* nobopt */ 0, | |
272 | /* noautoextend */ 0, /* gp32 */ 0, /* fp32 */ 0, /* arch */ CPU_UNKNOWN, | |
273 | /* sym32 */ FALSE, /* soft_float */ FALSE, /* single_float */ FALSE | |
e7af610e | 274 | }; |
252b5132 RH |
275 | |
276 | /* These variables are filled in with the masks of registers used. | |
277 | The object format code reads them and puts them in the appropriate | |
278 | place. */ | |
279 | unsigned long mips_gprmask; | |
280 | unsigned long mips_cprmask[4]; | |
281 | ||
282 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 283 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 284 | |
a4672219 TS |
285 | /* True if -mips16 was passed or implied by arguments passed on the |
286 | command line (e.g., by -march). */ | |
287 | static int file_ase_mips16; | |
288 | ||
3994f87e TS |
289 | #define ISA_SUPPORTS_MIPS16E (mips_opts.isa == ISA_MIPS32 \ |
290 | || mips_opts.isa == ISA_MIPS32R2 \ | |
291 | || mips_opts.isa == ISA_MIPS64 \ | |
292 | || mips_opts.isa == ISA_MIPS64R2) | |
293 | ||
b12dd2e4 CF |
294 | /* True if we want to create R_MIPS_JALR for jalr $25. */ |
295 | #ifdef TE_IRIX | |
1180b5a4 | 296 | #define MIPS_JALR_HINT_P(EXPR) HAVE_NEWABI |
b12dd2e4 | 297 | #else |
1180b5a4 RS |
298 | /* As a GNU extension, we use R_MIPS_JALR for o32 too. However, |
299 | because there's no place for any addend, the only acceptable | |
300 | expression is a bare symbol. */ | |
301 | #define MIPS_JALR_HINT_P(EXPR) \ | |
302 | (!HAVE_IN_PLACE_ADDENDS \ | |
303 | || ((EXPR)->X_op == O_symbol && (EXPR)->X_add_number == 0)) | |
b12dd2e4 CF |
304 | #endif |
305 | ||
1f25f5d3 CD |
306 | /* True if -mips3d was passed or implied by arguments passed on the |
307 | command line (e.g., by -march). */ | |
308 | static int file_ase_mips3d; | |
309 | ||
deec1734 CD |
310 | /* True if -mdmx was passed or implied by arguments passed on the |
311 | command line (e.g., by -march). */ | |
312 | static int file_ase_mdmx; | |
313 | ||
e16bfa71 TS |
314 | /* True if -msmartmips was passed or implied by arguments passed on the |
315 | command line (e.g., by -march). */ | |
316 | static int file_ase_smartmips; | |
317 | ||
ad3fea08 TS |
318 | #define ISA_SUPPORTS_SMARTMIPS (mips_opts.isa == ISA_MIPS32 \ |
319 | || mips_opts.isa == ISA_MIPS32R2) | |
e16bfa71 | 320 | |
74cd071d CF |
321 | /* True if -mdsp was passed or implied by arguments passed on the |
322 | command line (e.g., by -march). */ | |
323 | static int file_ase_dsp; | |
324 | ||
ad3fea08 TS |
325 | #define ISA_SUPPORTS_DSP_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
326 | || mips_opts.isa == ISA_MIPS64R2) | |
327 | ||
65263ce3 TS |
328 | #define ISA_SUPPORTS_DSP64_ASE (mips_opts.isa == ISA_MIPS64R2) |
329 | ||
8b082fb1 TS |
330 | /* True if -mdspr2 was passed or implied by arguments passed on the |
331 | command line (e.g., by -march). */ | |
332 | static int file_ase_dspr2; | |
333 | ||
334 | #define ISA_SUPPORTS_DSPR2_ASE (mips_opts.isa == ISA_MIPS32R2 \ | |
335 | || mips_opts.isa == ISA_MIPS64R2) | |
336 | ||
ef2e4d86 CF |
337 | /* True if -mmt was passed or implied by arguments passed on the |
338 | command line (e.g., by -march). */ | |
339 | static int file_ase_mt; | |
340 | ||
ad3fea08 TS |
341 | #define ISA_SUPPORTS_MT_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
342 | || mips_opts.isa == ISA_MIPS64R2) | |
343 | ||
ec68c924 | 344 | /* The argument of the -march= flag. The architecture we are assembling. */ |
fef14a42 | 345 | static int file_mips_arch = CPU_UNKNOWN; |
316f5878 | 346 | static const char *mips_arch_string; |
ec68c924 EC |
347 | |
348 | /* The argument of the -mtune= flag. The architecture for which we | |
349 | are optimizing. */ | |
350 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 351 | static const char *mips_tune_string; |
ec68c924 | 352 | |
316f5878 | 353 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
354 | static int mips_32bitmode = 0; |
355 | ||
316f5878 RS |
356 | /* True if the given ABI requires 32-bit registers. */ |
357 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
358 | ||
359 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
360 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
361 | ((ABI) == N32_ABI \ | |
362 | || (ABI) == N64_ABI \ | |
316f5878 RS |
363 | || (ABI) == O64_ABI) |
364 | ||
ad3fea08 | 365 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
366 | #define ISA_HAS_64BIT_REGS(ISA) \ |
367 | ((ISA) == ISA_MIPS3 \ | |
368 | || (ISA) == ISA_MIPS4 \ | |
369 | || (ISA) == ISA_MIPS5 \ | |
370 | || (ISA) == ISA_MIPS64 \ | |
371 | || (ISA) == ISA_MIPS64R2) | |
9ce8a5dd | 372 | |
ad3fea08 TS |
373 | /* Return true if ISA supports 64 bit wide float registers. */ |
374 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
375 | ((ISA) == ISA_MIPS3 \ | |
376 | || (ISA) == ISA_MIPS4 \ | |
377 | || (ISA) == ISA_MIPS5 \ | |
378 | || (ISA) == ISA_MIPS32R2 \ | |
379 | || (ISA) == ISA_MIPS64 \ | |
380 | || (ISA) == ISA_MIPS64R2) | |
381 | ||
af7ee8bf CD |
382 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
383 | instructions. */ | |
707bfff6 TS |
384 | #define ISA_HAS_DROR(ISA) \ |
385 | ((ISA) == ISA_MIPS64R2) | |
af7ee8bf CD |
386 | |
387 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
388 | instructions. */ | |
707bfff6 TS |
389 | #define ISA_HAS_ROR(ISA) \ |
390 | ((ISA) == ISA_MIPS32R2 \ | |
391 | || (ISA) == ISA_MIPS64R2 \ | |
392 | || mips_opts.ase_smartmips) | |
393 | ||
7455baf8 TS |
394 | /* Return true if ISA supports single-precision floats in odd registers. */ |
395 | #define ISA_HAS_ODD_SINGLE_FPR(ISA) \ | |
396 | ((ISA) == ISA_MIPS32 \ | |
397 | || (ISA) == ISA_MIPS32R2 \ | |
398 | || (ISA) == ISA_MIPS64 \ | |
399 | || (ISA) == ISA_MIPS64R2) | |
af7ee8bf | 400 | |
ad3fea08 TS |
401 | /* Return true if ISA supports move to/from high part of a 64-bit |
402 | floating-point register. */ | |
403 | #define ISA_HAS_MXHC1(ISA) \ | |
404 | ((ISA) == ISA_MIPS32R2 \ | |
405 | || (ISA) == ISA_MIPS64R2) | |
406 | ||
e013f690 | 407 | #define HAVE_32BIT_GPRS \ |
ad3fea08 | 408 | (mips_opts.gp32 || !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 409 | |
e013f690 | 410 | #define HAVE_32BIT_FPRS \ |
ad3fea08 | 411 | (mips_opts.fp32 || !ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
ca4e0257 | 412 | |
ad3fea08 TS |
413 | #define HAVE_64BIT_GPRS (!HAVE_32BIT_GPRS) |
414 | #define HAVE_64BIT_FPRS (!HAVE_32BIT_FPRS) | |
ca4e0257 | 415 | |
316f5878 | 416 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 417 | |
316f5878 | 418 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 419 | |
3b91255e RS |
420 | /* True if relocations are stored in-place. */ |
421 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
422 | ||
aed1a261 RS |
423 | /* The ABI-derived address size. */ |
424 | #define HAVE_64BIT_ADDRESSES \ | |
425 | (HAVE_64BIT_GPRS && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) | |
426 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) | |
e013f690 | 427 | |
aed1a261 RS |
428 | /* The size of symbolic constants (i.e., expressions of the form |
429 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
430 | #define HAVE_32BIT_SYMBOLS \ | |
431 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
432 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 433 | |
b7c7d6c1 TS |
434 | /* Addresses are loaded in different ways, depending on the address size |
435 | in use. The n32 ABI Documentation also mandates the use of additions | |
436 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 437 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 438 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
439 | |
440 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 441 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
442 | |
443 | #define ADDRESS_LOAD_INSN \ | |
444 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
445 | ||
446 | #define ADDRESS_STORE_INSN \ | |
447 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
448 | ||
a4672219 | 449 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
450 | #define CPU_HAS_MIPS16(cpu) \ |
451 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
452 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 453 | |
60b63b72 RS |
454 | /* True if CPU has a dror instruction. */ |
455 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
456 | ||
457 | /* True if CPU has a ror instruction. */ | |
458 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
459 | ||
dd3cbb7e NC |
460 | /* True if CPU has seq/sne and seqi/snei instructions. */ |
461 | #define CPU_HAS_SEQ(CPU) ((CPU) == CPU_OCTEON) | |
462 | ||
b19e8a9b AN |
463 | /* True if CPU does not implement the all the coprocessor insns. For these |
464 | CPUs only those COP insns are accepted that are explicitly marked to be | |
465 | available on the CPU. ISA membership for COP insns is ignored. */ | |
466 | #define NO_ISA_COP(CPU) ((CPU) == CPU_OCTEON) | |
467 | ||
c8978940 CD |
468 | /* True if mflo and mfhi can be immediately followed by instructions |
469 | which write to the HI and LO registers. | |
470 | ||
471 | According to MIPS specifications, MIPS ISAs I, II, and III need | |
472 | (at least) two instructions between the reads of HI/LO and | |
473 | instructions which write them, and later ISAs do not. Contradicting | |
474 | the MIPS specifications, some MIPS IV processor user manuals (e.g. | |
475 | the UM for the NEC Vr5000) document needing the instructions between | |
476 | HI/LO reads and writes, as well. Therefore, we declare only MIPS32, | |
477 | MIPS64 and later ISAs to have the interlocks, plus any specific | |
478 | earlier-ISA CPUs for which CPU documentation declares that the | |
479 | instructions are really interlocked. */ | |
480 | #define hilo_interlocks \ | |
481 | (mips_opts.isa == ISA_MIPS32 \ | |
482 | || mips_opts.isa == ISA_MIPS32R2 \ | |
483 | || mips_opts.isa == ISA_MIPS64 \ | |
484 | || mips_opts.isa == ISA_MIPS64R2 \ | |
485 | || mips_opts.arch == CPU_R4010 \ | |
486 | || mips_opts.arch == CPU_R10000 \ | |
487 | || mips_opts.arch == CPU_R12000 \ | |
3aa3176b TS |
488 | || mips_opts.arch == CPU_R14000 \ |
489 | || mips_opts.arch == CPU_R16000 \ | |
c8978940 | 490 | || mips_opts.arch == CPU_RM7000 \ |
c8978940 CD |
491 | || mips_opts.arch == CPU_VR5500 \ |
492 | ) | |
252b5132 RH |
493 | |
494 | /* Whether the processor uses hardware interlocks to protect reads | |
81912461 ILT |
495 | from the GPRs after they are loaded from memory, and thus does not |
496 | require nops to be inserted. This applies to instructions marked | |
497 | INSN_LOAD_MEMORY_DELAY. These nops are only required at MIPS ISA | |
498 | level I. */ | |
252b5132 | 499 | #define gpr_interlocks \ |
e7af610e | 500 | (mips_opts.isa != ISA_MIPS1 \ |
fef14a42 | 501 | || mips_opts.arch == CPU_R3900) |
252b5132 | 502 | |
81912461 ILT |
503 | /* Whether the processor uses hardware interlocks to avoid delays |
504 | required by coprocessor instructions, and thus does not require | |
505 | nops to be inserted. This applies to instructions marked | |
506 | INSN_LOAD_COPROC_DELAY, INSN_COPROC_MOVE_DELAY, and to delays | |
507 | between instructions marked INSN_WRITE_COND_CODE and ones marked | |
508 | INSN_READ_COND_CODE. These nops are only required at MIPS ISA | |
509 | levels I, II, and III. */ | |
bdaaa2e1 | 510 | /* Itbl support may require additional care here. */ |
81912461 ILT |
511 | #define cop_interlocks \ |
512 | ((mips_opts.isa != ISA_MIPS1 \ | |
513 | && mips_opts.isa != ISA_MIPS2 \ | |
514 | && mips_opts.isa != ISA_MIPS3) \ | |
515 | || mips_opts.arch == CPU_R4300 \ | |
81912461 ILT |
516 | ) |
517 | ||
518 | /* Whether the processor uses hardware interlocks to protect reads | |
519 | from coprocessor registers after they are loaded from memory, and | |
520 | thus does not require nops to be inserted. This applies to | |
521 | instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only | |
522 | requires at MIPS ISA level I. */ | |
523 | #define cop_mem_interlocks (mips_opts.isa != ISA_MIPS1) | |
252b5132 | 524 | |
6b76fefe CM |
525 | /* Is this a mfhi or mflo instruction? */ |
526 | #define MF_HILO_INSN(PINFO) \ | |
b19e8a9b AN |
527 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) |
528 | ||
529 | /* Returns true for a (non floating-point) coprocessor instruction. Reading | |
530 | or writing the condition code is only possible on the coprocessors and | |
531 | these insns are not marked with INSN_COP. Thus for these insns use the | |
a242dc0d | 532 | condition-code flags. */ |
b19e8a9b AN |
533 | #define COP_INSN(PINFO) \ |
534 | (PINFO != INSN_MACRO \ | |
a242dc0d AN |
535 | && ((PINFO) & (FP_S | FP_D)) == 0 \ |
536 | && ((PINFO) & (INSN_COP | INSN_READ_COND_CODE | INSN_WRITE_COND_CODE))) | |
6b76fefe | 537 | |
252b5132 RH |
538 | /* MIPS PIC level. */ |
539 | ||
a161fe53 | 540 | enum mips_pic_level mips_pic; |
252b5132 | 541 | |
c9914766 | 542 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 543 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 544 | static int mips_big_got = 0; |
252b5132 RH |
545 | |
546 | /* 1 if trap instructions should used for overflow rather than break | |
547 | instructions. */ | |
c9914766 | 548 | static int mips_trap = 0; |
252b5132 | 549 | |
119d663a | 550 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 551 | by assembling two single width halves into two single width floating |
119d663a NC |
552 | point registers which just happen to alias the double width destination |
553 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 554 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
555 | automatically at assemble time. */ |
556 | static int mips_disable_float_construction; | |
557 | ||
252b5132 RH |
558 | /* Non-zero if any .set noreorder directives were used. */ |
559 | ||
560 | static int mips_any_noreorder; | |
561 | ||
6b76fefe CM |
562 | /* Non-zero if nops should be inserted when the register referenced in |
563 | an mfhi/mflo instruction is read in the next two instructions. */ | |
564 | static int mips_7000_hilo_fix; | |
565 | ||
02ffd3e4 | 566 | /* The size of objects in the small data section. */ |
156c2f8b | 567 | static unsigned int g_switch_value = 8; |
252b5132 RH |
568 | /* Whether the -G option was used. */ |
569 | static int g_switch_seen = 0; | |
570 | ||
571 | #define N_RMASK 0xc4 | |
572 | #define N_VFP 0xd4 | |
573 | ||
574 | /* If we can determine in advance that GP optimization won't be | |
575 | possible, we can skip the relaxation stuff that tries to produce | |
576 | GP-relative references. This makes delay slot optimization work | |
577 | better. | |
578 | ||
579 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
580 | gcc output. It needs to guess right for gcc, otherwise gcc |
581 | will put what it thinks is a GP-relative instruction in a branch | |
582 | delay slot. | |
252b5132 RH |
583 | |
584 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
585 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 586 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
587 | |
588 | /* handle of the OPCODE hash table */ | |
589 | static struct hash_control *op_hash = NULL; | |
590 | ||
591 | /* The opcode hash table we use for the mips16. */ | |
592 | static struct hash_control *mips16_op_hash = NULL; | |
593 | ||
594 | /* This array holds the chars that always start a comment. If the | |
595 | pre-processor is disabled, these aren't very useful */ | |
596 | const char comment_chars[] = "#"; | |
597 | ||
598 | /* This array holds the chars that only start a comment at the beginning of | |
599 | a line. If the line seems to have the form '# 123 filename' | |
600 | .line and .file directives will appear in the pre-processed output */ | |
601 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
602 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 603 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
604 | /* Also note that C style comments are always supported. */ |
605 | const char line_comment_chars[] = "#"; | |
606 | ||
bdaaa2e1 | 607 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 608 | const char line_separator_chars[] = ";"; |
252b5132 RH |
609 | |
610 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
611 | const char EXP_CHARS[] = "eE"; | |
612 | ||
613 | /* Chars that mean this number is a floating point constant */ | |
614 | /* As in 0f12.456 */ | |
615 | /* or 0d1.2345e12 */ | |
616 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
617 | ||
618 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
619 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
620 | but nothing is ideal around here. | |
621 | */ | |
622 | ||
623 | static char *insn_error; | |
624 | ||
625 | static int auto_align = 1; | |
626 | ||
627 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
628 | offset in the stack frame from which to restore the $gp register. | |
629 | This is set by the .cprestore pseudo-op, and saved in this | |
630 | variable. */ | |
631 | static offsetT mips_cprestore_offset = -1; | |
632 | ||
67c1ffbe | 633 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 634 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 635 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
636 | static offsetT mips_cpreturn_offset = -1; |
637 | static int mips_cpreturn_register = -1; | |
638 | static int mips_gp_register = GP; | |
def2e0dd | 639 | static int mips_gprel_offset = 0; |
6478892d | 640 | |
7a621144 DJ |
641 | /* Whether mips_cprestore_offset has been set in the current function |
642 | (or whether it has already been warned about, if not). */ | |
643 | static int mips_cprestore_valid = 0; | |
644 | ||
252b5132 RH |
645 | /* This is the register which holds the stack frame, as set by the |
646 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
647 | static int mips_frame_reg = SP; | |
648 | ||
7a621144 DJ |
649 | /* Whether mips_frame_reg has been set in the current function |
650 | (or whether it has already been warned about, if not). */ | |
651 | static int mips_frame_reg_valid = 0; | |
652 | ||
252b5132 RH |
653 | /* To output NOP instructions correctly, we need to keep information |
654 | about the previous two instructions. */ | |
655 | ||
656 | /* Whether we are optimizing. The default value of 2 means to remove | |
657 | unneeded NOPs and swap branch instructions when possible. A value | |
658 | of 1 means to not swap branches. A value of 0 means to always | |
659 | insert NOPs. */ | |
660 | static int mips_optimize = 2; | |
661 | ||
662 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
663 | equivalent to seeing no -g option at all. */ | |
664 | static int mips_debug = 0; | |
665 | ||
7d8e00cf RS |
666 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
667 | #define MAX_VR4130_NOPS 4 | |
668 | ||
669 | /* The maximum number of NOPs needed to fill delay slots. */ | |
670 | #define MAX_DELAY_NOPS 2 | |
671 | ||
672 | /* The maximum number of NOPs needed for any purpose. */ | |
673 | #define MAX_NOPS 4 | |
71400594 RS |
674 | |
675 | /* A list of previous instructions, with index 0 being the most recent. | |
676 | We need to look back MAX_NOPS instructions when filling delay slots | |
677 | or working around processor errata. We need to look back one | |
678 | instruction further if we're thinking about using history[0] to | |
679 | fill a branch delay slot. */ | |
680 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 681 | |
1e915849 RS |
682 | /* Nop instructions used by emit_nop. */ |
683 | static struct mips_cl_insn nop_insn, mips16_nop_insn; | |
684 | ||
685 | /* The appropriate nop for the current mode. */ | |
686 | #define NOP_INSN (mips_opts.mips16 ? &mips16_nop_insn : &nop_insn) | |
252b5132 | 687 | |
252b5132 RH |
688 | /* If this is set, it points to a frag holding nop instructions which |
689 | were inserted before the start of a noreorder section. If those | |
690 | nops turn out to be unnecessary, the size of the frag can be | |
691 | decreased. */ | |
692 | static fragS *prev_nop_frag; | |
693 | ||
694 | /* The number of nop instructions we created in prev_nop_frag. */ | |
695 | static int prev_nop_frag_holds; | |
696 | ||
697 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 698 | prev_nop_frag. */ |
252b5132 RH |
699 | static int prev_nop_frag_required; |
700 | ||
701 | /* The number of instructions we've seen since prev_nop_frag. */ | |
702 | static int prev_nop_frag_since; | |
703 | ||
704 | /* For ECOFF and ELF, relocations against symbols are done in two | |
705 | parts, with a HI relocation and a LO relocation. Each relocation | |
706 | has only 16 bits of space to store an addend. This means that in | |
707 | order for the linker to handle carries correctly, it must be able | |
708 | to locate both the HI and the LO relocation. This means that the | |
709 | relocations must appear in order in the relocation table. | |
710 | ||
711 | In order to implement this, we keep track of each unmatched HI | |
712 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 713 | corresponding LO relocation. */ |
252b5132 | 714 | |
e972090a NC |
715 | struct mips_hi_fixup |
716 | { | |
252b5132 RH |
717 | /* Next HI fixup. */ |
718 | struct mips_hi_fixup *next; | |
719 | /* This fixup. */ | |
720 | fixS *fixp; | |
721 | /* The section this fixup is in. */ | |
722 | segT seg; | |
723 | }; | |
724 | ||
725 | /* The list of unmatched HI relocs. */ | |
726 | ||
727 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
728 | ||
64bdfcaf RS |
729 | /* The frag containing the last explicit relocation operator. |
730 | Null if explicit relocations have not been used. */ | |
731 | ||
732 | static fragS *prev_reloc_op_frag; | |
733 | ||
252b5132 RH |
734 | /* Map normal MIPS register numbers to mips16 register numbers. */ |
735 | ||
736 | #define X ILLEGAL_REG | |
e972090a NC |
737 | static const int mips32_to_16_reg_map[] = |
738 | { | |
252b5132 RH |
739 | X, X, 2, 3, 4, 5, 6, 7, |
740 | X, X, X, X, X, X, X, X, | |
741 | 0, 1, X, X, X, X, X, X, | |
742 | X, X, X, X, X, X, X, X | |
743 | }; | |
744 | #undef X | |
745 | ||
746 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
747 | ||
e972090a NC |
748 | static const unsigned int mips16_to_32_reg_map[] = |
749 | { | |
252b5132 RH |
750 | 16, 17, 2, 3, 4, 5, 6, 7 |
751 | }; | |
60b63b72 | 752 | |
71400594 RS |
753 | /* Classifies the kind of instructions we're interested in when |
754 | implementing -mfix-vr4120. */ | |
c67a084a NC |
755 | enum fix_vr4120_class |
756 | { | |
71400594 RS |
757 | FIX_VR4120_MACC, |
758 | FIX_VR4120_DMACC, | |
759 | FIX_VR4120_MULT, | |
760 | FIX_VR4120_DMULT, | |
761 | FIX_VR4120_DIV, | |
762 | FIX_VR4120_MTHILO, | |
763 | NUM_FIX_VR4120_CLASSES | |
764 | }; | |
765 | ||
c67a084a NC |
766 | /* ...likewise -mfix-loongson2f-jump. */ |
767 | static bfd_boolean mips_fix_loongson2f_jump; | |
768 | ||
769 | /* ...likewise -mfix-loongson2f-nop. */ | |
770 | static bfd_boolean mips_fix_loongson2f_nop; | |
771 | ||
772 | /* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed. */ | |
773 | static bfd_boolean mips_fix_loongson2f; | |
774 | ||
71400594 RS |
775 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if |
776 | there must be at least one other instruction between an instruction | |
777 | of type X and an instruction of type Y. */ | |
778 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
779 | ||
780 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 781 | static int mips_fix_vr4120; |
4a6a3df4 | 782 | |
7d8e00cf RS |
783 | /* ...likewise -mfix-vr4130. */ |
784 | static int mips_fix_vr4130; | |
785 | ||
6a32d874 CM |
786 | /* ...likewise -mfix-24k. */ |
787 | static int mips_fix_24k; | |
788 | ||
d954098f DD |
789 | /* ...likewise -mfix-cn63xxp1 */ |
790 | static bfd_boolean mips_fix_cn63xxp1; | |
791 | ||
4a6a3df4 AO |
792 | /* We don't relax branches by default, since this causes us to expand |
793 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
794 | fail to compute the offset before expanding the macro to the most | |
795 | efficient expansion. */ | |
796 | ||
797 | static int mips_relax_branch; | |
252b5132 | 798 | \f |
4d7206a2 RS |
799 | /* The expansion of many macros depends on the type of symbol that |
800 | they refer to. For example, when generating position-dependent code, | |
801 | a macro that refers to a symbol may have two different expansions, | |
802 | one which uses GP-relative addresses and one which uses absolute | |
803 | addresses. When generating SVR4-style PIC, a macro may have | |
804 | different expansions for local and global symbols. | |
805 | ||
806 | We handle these situations by generating both sequences and putting | |
807 | them in variant frags. In position-dependent code, the first sequence | |
808 | will be the GP-relative one and the second sequence will be the | |
809 | absolute one. In SVR4 PIC, the first sequence will be for global | |
810 | symbols and the second will be for local symbols. | |
811 | ||
584892a6 RS |
812 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
813 | SECOND are the lengths of the two sequences in bytes. These fields | |
814 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
815 | the subtype has the following flags: | |
4d7206a2 | 816 | |
584892a6 RS |
817 | RELAX_USE_SECOND |
818 | Set if it has been decided that we should use the second | |
819 | sequence instead of the first. | |
820 | ||
821 | RELAX_SECOND_LONGER | |
822 | Set in the first variant frag if the macro's second implementation | |
823 | is longer than its first. This refers to the macro as a whole, | |
824 | not an individual relaxation. | |
825 | ||
826 | RELAX_NOMACRO | |
827 | Set in the first variant frag if the macro appeared in a .set nomacro | |
828 | block and if one alternative requires a warning but the other does not. | |
829 | ||
830 | RELAX_DELAY_SLOT | |
831 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
832 | delay slot. | |
4d7206a2 RS |
833 | |
834 | The frag's "opcode" points to the first fixup for relaxable code. | |
835 | ||
836 | Relaxable macros are generated using a sequence such as: | |
837 | ||
838 | relax_start (SYMBOL); | |
839 | ... generate first expansion ... | |
840 | relax_switch (); | |
841 | ... generate second expansion ... | |
842 | relax_end (); | |
843 | ||
844 | The code and fixups for the unwanted alternative are discarded | |
845 | by md_convert_frag. */ | |
584892a6 | 846 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 847 | |
584892a6 RS |
848 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
849 | #define RELAX_SECOND(X) ((X) & 0xff) | |
850 | #define RELAX_USE_SECOND 0x10000 | |
851 | #define RELAX_SECOND_LONGER 0x20000 | |
852 | #define RELAX_NOMACRO 0x40000 | |
853 | #define RELAX_DELAY_SLOT 0x80000 | |
252b5132 | 854 | |
4a6a3df4 AO |
855 | /* Branch without likely bit. If label is out of range, we turn: |
856 | ||
857 | beq reg1, reg2, label | |
858 | delay slot | |
859 | ||
860 | into | |
861 | ||
862 | bne reg1, reg2, 0f | |
863 | nop | |
864 | j label | |
865 | 0: delay slot | |
866 | ||
867 | with the following opcode replacements: | |
868 | ||
869 | beq <-> bne | |
870 | blez <-> bgtz | |
871 | bltz <-> bgez | |
872 | bc1f <-> bc1t | |
873 | ||
874 | bltzal <-> bgezal (with jal label instead of j label) | |
875 | ||
876 | Even though keeping the delay slot instruction in the delay slot of | |
877 | the branch would be more efficient, it would be very tricky to do | |
878 | correctly, because we'd have to introduce a variable frag *after* | |
879 | the delay slot instruction, and expand that instead. Let's do it | |
880 | the easy way for now, even if the branch-not-taken case now costs | |
881 | one additional instruction. Out-of-range branches are not supposed | |
882 | to be common, anyway. | |
883 | ||
884 | Branch likely. If label is out of range, we turn: | |
885 | ||
886 | beql reg1, reg2, label | |
887 | delay slot (annulled if branch not taken) | |
888 | ||
889 | into | |
890 | ||
891 | beql reg1, reg2, 1f | |
892 | nop | |
893 | beql $0, $0, 2f | |
894 | nop | |
895 | 1: j[al] label | |
896 | delay slot (executed only if branch taken) | |
897 | 2: | |
898 | ||
899 | It would be possible to generate a shorter sequence by losing the | |
900 | likely bit, generating something like: | |
b34976b6 | 901 | |
4a6a3df4 AO |
902 | bne reg1, reg2, 0f |
903 | nop | |
904 | j[al] label | |
905 | delay slot (executed only if branch taken) | |
906 | 0: | |
907 | ||
908 | beql -> bne | |
909 | bnel -> beq | |
910 | blezl -> bgtz | |
911 | bgtzl -> blez | |
912 | bltzl -> bgez | |
913 | bgezl -> bltz | |
914 | bc1fl -> bc1t | |
915 | bc1tl -> bc1f | |
916 | ||
917 | bltzall -> bgezal (with jal label instead of j label) | |
918 | bgezall -> bltzal (ditto) | |
919 | ||
920 | ||
921 | but it's not clear that it would actually improve performance. */ | |
af6ae2ad | 922 | #define RELAX_BRANCH_ENCODE(uncond, likely, link, toofar) \ |
4a6a3df4 AO |
923 | ((relax_substateT) \ |
924 | (0xc0000000 \ | |
925 | | ((toofar) ? 1 : 0) \ | |
926 | | ((link) ? 2 : 0) \ | |
927 | | ((likely) ? 4 : 0) \ | |
af6ae2ad | 928 | | ((uncond) ? 8 : 0))) |
4a6a3df4 | 929 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
4a6a3df4 AO |
930 | #define RELAX_BRANCH_UNCOND(i) (((i) & 8) != 0) |
931 | #define RELAX_BRANCH_LIKELY(i) (((i) & 4) != 0) | |
932 | #define RELAX_BRANCH_LINK(i) (((i) & 2) != 0) | |
ae6063d4 | 933 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 1) != 0) |
4a6a3df4 | 934 | |
252b5132 RH |
935 | /* For mips16 code, we use an entirely different form of relaxation. |
936 | mips16 supports two versions of most instructions which take | |
937 | immediate values: a small one which takes some small value, and a | |
938 | larger one which takes a 16 bit value. Since branches also follow | |
939 | this pattern, relaxing these values is required. | |
940 | ||
941 | We can assemble both mips16 and normal MIPS code in a single | |
942 | object. Therefore, we need to support this type of relaxation at | |
943 | the same time that we support the relaxation described above. We | |
944 | use the high bit of the subtype field to distinguish these cases. | |
945 | ||
946 | The information we store for this type of relaxation is the | |
947 | argument code found in the opcode file for this relocation, whether | |
948 | the user explicitly requested a small or extended form, and whether | |
949 | the relocation is in a jump or jal delay slot. That tells us the | |
950 | size of the value, and how it should be stored. We also store | |
951 | whether the fragment is considered to be extended or not. We also | |
952 | store whether this is known to be a branch to a different section, | |
953 | whether we have tried to relax this frag yet, and whether we have | |
954 | ever extended a PC relative fragment because of a shift count. */ | |
955 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
956 | (0x80000000 \ | |
957 | | ((type) & 0xff) \ | |
958 | | ((small) ? 0x100 : 0) \ | |
959 | | ((ext) ? 0x200 : 0) \ | |
960 | | ((dslot) ? 0x400 : 0) \ | |
961 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 962 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
963 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
964 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
965 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
966 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
967 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
968 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
969 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
970 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
971 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
972 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
973 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 CD |
974 | |
975 | /* Is the given value a sign-extended 32-bit value? */ | |
976 | #define IS_SEXT_32BIT_NUM(x) \ | |
977 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
978 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
979 | ||
980 | /* Is the given value a sign-extended 16-bit value? */ | |
981 | #define IS_SEXT_16BIT_NUM(x) \ | |
982 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
983 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
984 | ||
2051e8c4 MR |
985 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
986 | #define IS_ZEXT_32BIT_NUM(x) \ | |
987 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
988 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
989 | ||
bf12938e RS |
990 | /* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in |
991 | VALUE << SHIFT. VALUE is evaluated exactly once. */ | |
992 | #define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \ | |
993 | (STRUCT) = (((STRUCT) & ~((MASK) << (SHIFT))) \ | |
994 | | (((VALUE) & (MASK)) << (SHIFT))) | |
995 | ||
996 | /* Extract bits MASK << SHIFT from STRUCT and shift them right | |
997 | SHIFT places. */ | |
998 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
999 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
1000 | ||
1001 | /* Change INSN's opcode so that the operand given by FIELD has value VALUE. | |
1002 | INSN is a mips_cl_insn structure and VALUE is evaluated exactly once. | |
1003 | ||
1004 | include/opcode/mips.h specifies operand fields using the macros | |
1005 | OP_MASK_<FIELD> and OP_SH_<FIELD>. The MIPS16 equivalents start | |
1006 | with "MIPS16OP" instead of "OP". */ | |
1007 | #define INSERT_OPERAND(FIELD, INSN, VALUE) \ | |
1008 | INSERT_BITS ((INSN).insn_opcode, VALUE, OP_MASK_##FIELD, OP_SH_##FIELD) | |
1009 | #define MIPS16_INSERT_OPERAND(FIELD, INSN, VALUE) \ | |
1010 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1011 | MIPS16OP_MASK_##FIELD, MIPS16OP_SH_##FIELD) | |
1012 | ||
1013 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ | |
1014 | #define EXTRACT_OPERAND(FIELD, INSN) \ | |
1015 | EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) | |
1016 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ | |
1017 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
1018 | MIPS16OP_MASK_##FIELD, \ | |
1019 | MIPS16OP_SH_##FIELD) | |
4d7206a2 RS |
1020 | \f |
1021 | /* Global variables used when generating relaxable macros. See the | |
1022 | comment above RELAX_ENCODE for more details about how relaxation | |
1023 | is used. */ | |
1024 | static struct { | |
1025 | /* 0 if we're not emitting a relaxable macro. | |
1026 | 1 if we're emitting the first of the two relaxation alternatives. | |
1027 | 2 if we're emitting the second alternative. */ | |
1028 | int sequence; | |
1029 | ||
1030 | /* The first relaxable fixup in the current frag. (In other words, | |
1031 | the first fixup that refers to relaxable code.) */ | |
1032 | fixS *first_fixup; | |
1033 | ||
1034 | /* sizes[0] says how many bytes of the first alternative are stored in | |
1035 | the current frag. Likewise sizes[1] for the second alternative. */ | |
1036 | unsigned int sizes[2]; | |
1037 | ||
1038 | /* The symbol on which the choice of sequence depends. */ | |
1039 | symbolS *symbol; | |
1040 | } mips_relax; | |
252b5132 | 1041 | \f |
584892a6 RS |
1042 | /* Global variables used to decide whether a macro needs a warning. */ |
1043 | static struct { | |
1044 | /* True if the macro is in a branch delay slot. */ | |
1045 | bfd_boolean delay_slot_p; | |
1046 | ||
1047 | /* For relaxable macros, sizes[0] is the length of the first alternative | |
1048 | in bytes and sizes[1] is the length of the second alternative. | |
1049 | For non-relaxable macros, both elements give the length of the | |
1050 | macro in bytes. */ | |
1051 | unsigned int sizes[2]; | |
1052 | ||
1053 | /* The first variant frag for this macro. */ | |
1054 | fragS *first_frag; | |
1055 | } mips_macro_warning; | |
1056 | \f | |
252b5132 RH |
1057 | /* Prototypes for static functions. */ |
1058 | ||
17a2f251 | 1059 | #define internalError() \ |
252b5132 | 1060 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) |
252b5132 RH |
1061 | |
1062 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
1063 | ||
b34976b6 | 1064 | static void append_insn |
c67a084a | 1065 | (struct mips_cl_insn *, expressionS *, bfd_reloc_code_real_type *); |
7d10b47d | 1066 | static void mips_no_prev_insn (void); |
c67a084a | 1067 | static void macro_build (expressionS *, const char *, const char *, ...); |
b34976b6 | 1068 | static void mips16_macro_build |
03ea81db | 1069 | (expressionS *, const char *, const char *, va_list *); |
67c0d1eb | 1070 | static void load_register (int, expressionS *, int); |
584892a6 RS |
1071 | static void macro_start (void); |
1072 | static void macro_end (void); | |
17a2f251 TS |
1073 | static void macro (struct mips_cl_insn * ip); |
1074 | static void mips16_macro (struct mips_cl_insn * ip); | |
17a2f251 TS |
1075 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
1076 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 1077 | static void mips16_immed |
17a2f251 TS |
1078 | (char *, unsigned int, int, offsetT, bfd_boolean, bfd_boolean, bfd_boolean, |
1079 | unsigned long *, bfd_boolean *, unsigned short *); | |
5e0116d5 | 1080 | static size_t my_getSmallExpression |
17a2f251 TS |
1081 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1082 | static void my_getExpression (expressionS *, char *); | |
1083 | static void s_align (int); | |
1084 | static void s_change_sec (int); | |
1085 | static void s_change_section (int); | |
1086 | static void s_cons (int); | |
1087 | static void s_float_cons (int); | |
1088 | static void s_mips_globl (int); | |
1089 | static void s_option (int); | |
1090 | static void s_mipsset (int); | |
1091 | static void s_abicalls (int); | |
1092 | static void s_cpload (int); | |
1093 | static void s_cpsetup (int); | |
1094 | static void s_cplocal (int); | |
1095 | static void s_cprestore (int); | |
1096 | static void s_cpreturn (int); | |
741d6ea8 JM |
1097 | static void s_dtprelword (int); |
1098 | static void s_dtpreldword (int); | |
17a2f251 TS |
1099 | static void s_gpvalue (int); |
1100 | static void s_gpword (int); | |
1101 | static void s_gpdword (int); | |
1102 | static void s_cpadd (int); | |
1103 | static void s_insn (int); | |
1104 | static void md_obj_begin (void); | |
1105 | static void md_obj_end (void); | |
1106 | static void s_mips_ent (int); | |
1107 | static void s_mips_end (int); | |
1108 | static void s_mips_frame (int); | |
1109 | static void s_mips_mask (int reg_type); | |
1110 | static void s_mips_stab (int); | |
1111 | static void s_mips_weakext (int); | |
1112 | static void s_mips_file (int); | |
1113 | static void s_mips_loc (int); | |
1114 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1115 | static int relaxed_branch_length (fragS *, asection *, int); |
17a2f251 | 1116 | static int validate_mips_insn (const struct mips_opcode *); |
e7af610e NC |
1117 | |
1118 | /* Table and functions used to map between CPU/ISA names, and | |
1119 | ISA levels, and CPU numbers. */ | |
1120 | ||
e972090a NC |
1121 | struct mips_cpu_info |
1122 | { | |
e7af610e | 1123 | const char *name; /* CPU or ISA name. */ |
ad3fea08 | 1124 | int flags; /* ASEs available, or ISA flag. */ |
e7af610e NC |
1125 | int isa; /* ISA level. */ |
1126 | int cpu; /* CPU number (default CPU if ISA). */ | |
1127 | }; | |
1128 | ||
ad3fea08 TS |
1129 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
1130 | #define MIPS_CPU_ASE_SMARTMIPS 0x0002 /* CPU implements SmartMIPS ASE */ | |
1131 | #define MIPS_CPU_ASE_DSP 0x0004 /* CPU implements DSP ASE */ | |
1132 | #define MIPS_CPU_ASE_MT 0x0008 /* CPU implements MT ASE */ | |
1133 | #define MIPS_CPU_ASE_MIPS3D 0x0010 /* CPU implements MIPS-3D ASE */ | |
1134 | #define MIPS_CPU_ASE_MDMX 0x0020 /* CPU implements MDMX ASE */ | |
8b082fb1 | 1135 | #define MIPS_CPU_ASE_DSPR2 0x0040 /* CPU implements DSP R2 ASE */ |
ad3fea08 | 1136 | |
17a2f251 TS |
1137 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1138 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1139 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 RH |
1140 | \f |
1141 | /* Pseudo-op table. | |
1142 | ||
1143 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1144 | should be defined here, but are currently unsupported: .alias, | |
1145 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1146 | ||
1147 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1148 | specific to the type of debugging information being generated, and | |
1149 | should be defined by the object format: .aent, .begin, .bend, | |
1150 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1151 | .vreg. | |
1152 | ||
1153 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1154 | not MIPS CPU specific, but are also not specific to the object file | |
1155 | format. This file is probably the best place to define them, but | |
d84bcf09 | 1156 | they are not currently supported: .asm0, .endr, .lab, .struct. */ |
252b5132 | 1157 | |
e972090a NC |
1158 | static const pseudo_typeS mips_pseudo_table[] = |
1159 | { | |
beae10d5 | 1160 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1161 | {"option", s_option, 0}, |
1162 | {"set", s_mipsset, 0}, | |
1163 | {"rdata", s_change_sec, 'r'}, | |
1164 | {"sdata", s_change_sec, 's'}, | |
1165 | {"livereg", s_ignore, 0}, | |
1166 | {"abicalls", s_abicalls, 0}, | |
1167 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1168 | {"cpsetup", s_cpsetup, 0}, |
1169 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1170 | {"cprestore", s_cprestore, 0}, |
6478892d | 1171 | {"cpreturn", s_cpreturn, 0}, |
741d6ea8 JM |
1172 | {"dtprelword", s_dtprelword, 0}, |
1173 | {"dtpreldword", s_dtpreldword, 0}, | |
6478892d | 1174 | {"gpvalue", s_gpvalue, 0}, |
252b5132 | 1175 | {"gpword", s_gpword, 0}, |
10181a0d | 1176 | {"gpdword", s_gpdword, 0}, |
252b5132 RH |
1177 | {"cpadd", s_cpadd, 0}, |
1178 | {"insn", s_insn, 0}, | |
1179 | ||
beae10d5 | 1180 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 | 1181 | chips. */ |
38a57ae7 | 1182 | {"asciiz", stringer, 8 + 1}, |
252b5132 RH |
1183 | {"bss", s_change_sec, 'b'}, |
1184 | {"err", s_err, 0}, | |
1185 | {"half", s_cons, 1}, | |
1186 | {"dword", s_cons, 3}, | |
1187 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1188 | {"origin", s_org, 0}, |
1189 | {"repeat", s_rept, 0}, | |
252b5132 | 1190 | |
998b3c36 MR |
1191 | /* For MIPS this is non-standard, but we define it for consistency. */ |
1192 | {"sbss", s_change_sec, 'B'}, | |
1193 | ||
beae10d5 | 1194 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1195 | here for one reason or another. */ |
1196 | {"align", s_align, 0}, | |
1197 | {"byte", s_cons, 0}, | |
1198 | {"data", s_change_sec, 'd'}, | |
1199 | {"double", s_float_cons, 'd'}, | |
1200 | {"float", s_float_cons, 'f'}, | |
1201 | {"globl", s_mips_globl, 0}, | |
1202 | {"global", s_mips_globl, 0}, | |
1203 | {"hword", s_cons, 1}, | |
1204 | {"int", s_cons, 2}, | |
1205 | {"long", s_cons, 2}, | |
1206 | {"octa", s_cons, 4}, | |
1207 | {"quad", s_cons, 3}, | |
cca86cc8 | 1208 | {"section", s_change_section, 0}, |
252b5132 RH |
1209 | {"short", s_cons, 1}, |
1210 | {"single", s_float_cons, 'f'}, | |
1211 | {"stabn", s_mips_stab, 'n'}, | |
1212 | {"text", s_change_sec, 't'}, | |
1213 | {"word", s_cons, 2}, | |
add56521 | 1214 | |
add56521 | 1215 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1216 | |
43841e91 | 1217 | { NULL, NULL, 0 }, |
252b5132 RH |
1218 | }; |
1219 | ||
e972090a NC |
1220 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1221 | { | |
beae10d5 KH |
1222 | /* These pseudo-ops should be defined by the object file format. |
1223 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1224 | {"aent", s_mips_ent, 1}, |
1225 | {"bgnb", s_ignore, 0}, | |
1226 | {"end", s_mips_end, 0}, | |
1227 | {"endb", s_ignore, 0}, | |
1228 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1229 | {"file", s_mips_file, 0}, |
252b5132 RH |
1230 | {"fmask", s_mips_mask, 'F'}, |
1231 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1232 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1233 | {"mask", s_mips_mask, 'R'}, |
1234 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1235 | { NULL, NULL, 0 }, |
252b5132 RH |
1236 | }; |
1237 | ||
17a2f251 | 1238 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1239 | |
1240 | void | |
17a2f251 | 1241 | mips_pop_insert (void) |
252b5132 RH |
1242 | { |
1243 | pop_insert (mips_pseudo_table); | |
1244 | if (! ECOFF_DEBUGGING) | |
1245 | pop_insert (mips_nonecoff_pseudo_table); | |
1246 | } | |
1247 | \f | |
1248 | /* Symbols labelling the current insn. */ | |
1249 | ||
e972090a NC |
1250 | struct insn_label_list |
1251 | { | |
252b5132 RH |
1252 | struct insn_label_list *next; |
1253 | symbolS *label; | |
1254 | }; | |
1255 | ||
252b5132 | 1256 | static struct insn_label_list *free_insn_labels; |
742a56fe | 1257 | #define label_list tc_segment_info_data.labels |
252b5132 | 1258 | |
17a2f251 | 1259 | static void mips_clear_insn_labels (void); |
252b5132 RH |
1260 | |
1261 | static inline void | |
17a2f251 | 1262 | mips_clear_insn_labels (void) |
252b5132 RH |
1263 | { |
1264 | register struct insn_label_list **pl; | |
a8dbcb85 | 1265 | segment_info_type *si; |
252b5132 | 1266 | |
a8dbcb85 TS |
1267 | if (now_seg) |
1268 | { | |
1269 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1270 | ; | |
1271 | ||
1272 | si = seg_info (now_seg); | |
1273 | *pl = si->label_list; | |
1274 | si->label_list = NULL; | |
1275 | } | |
252b5132 | 1276 | } |
a8dbcb85 | 1277 | |
252b5132 RH |
1278 | \f |
1279 | static char *expr_end; | |
1280 | ||
1281 | /* Expressions which appear in instructions. These are set by | |
1282 | mips_ip. */ | |
1283 | ||
1284 | static expressionS imm_expr; | |
5f74bc13 | 1285 | static expressionS imm2_expr; |
252b5132 RH |
1286 | static expressionS offset_expr; |
1287 | ||
1288 | /* Relocs associated with imm_expr and offset_expr. */ | |
1289 | ||
f6688943 TS |
1290 | static bfd_reloc_code_real_type imm_reloc[3] |
1291 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
1292 | static bfd_reloc_code_real_type offset_reloc[3] | |
1293 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1294 | |
252b5132 RH |
1295 | /* These are set by mips16_ip if an explicit extension is used. */ |
1296 | ||
b34976b6 | 1297 | static bfd_boolean mips16_small, mips16_ext; |
252b5132 | 1298 | |
7ed4a06a | 1299 | #ifdef OBJ_ELF |
ecb4347a DJ |
1300 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1301 | ECOFF debugging. */ | |
252b5132 RH |
1302 | |
1303 | static segT pdr_seg; | |
7ed4a06a | 1304 | #endif |
252b5132 | 1305 | |
e013f690 TS |
1306 | /* The default target format to use. */ |
1307 | ||
1308 | const char * | |
17a2f251 | 1309 | mips_target_format (void) |
e013f690 TS |
1310 | { |
1311 | switch (OUTPUT_FLAVOR) | |
1312 | { | |
e013f690 TS |
1313 | case bfd_target_ecoff_flavour: |
1314 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
1315 | case bfd_target_coff_flavour: | |
1316 | return "pe-mips"; | |
1317 | case bfd_target_elf_flavour: | |
0a44bf69 RS |
1318 | #ifdef TE_VXWORKS |
1319 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1320 | return (target_big_endian | |
1321 | ? "elf32-bigmips-vxworks" | |
1322 | : "elf32-littlemips-vxworks"); | |
1323 | #endif | |
e013f690 | 1324 | #ifdef TE_TMIPS |
cfe86eaa | 1325 | /* This is traditional mips. */ |
e013f690 | 1326 | return (target_big_endian |
cfe86eaa TS |
1327 | ? (HAVE_64BIT_OBJECTS |
1328 | ? "elf64-tradbigmips" | |
1329 | : (HAVE_NEWABI | |
1330 | ? "elf32-ntradbigmips" : "elf32-tradbigmips")) | |
1331 | : (HAVE_64BIT_OBJECTS | |
1332 | ? "elf64-tradlittlemips" | |
1333 | : (HAVE_NEWABI | |
1334 | ? "elf32-ntradlittlemips" : "elf32-tradlittlemips"))); | |
e013f690 TS |
1335 | #else |
1336 | return (target_big_endian | |
cfe86eaa TS |
1337 | ? (HAVE_64BIT_OBJECTS |
1338 | ? "elf64-bigmips" | |
1339 | : (HAVE_NEWABI | |
1340 | ? "elf32-nbigmips" : "elf32-bigmips")) | |
1341 | : (HAVE_64BIT_OBJECTS | |
1342 | ? "elf64-littlemips" | |
1343 | : (HAVE_NEWABI | |
1344 | ? "elf32-nlittlemips" : "elf32-littlemips"))); | |
e013f690 TS |
1345 | #endif |
1346 | default: | |
1347 | abort (); | |
1348 | return NULL; | |
1349 | } | |
1350 | } | |
1351 | ||
1e915849 RS |
1352 | /* Return the length of instruction INSN. */ |
1353 | ||
1354 | static inline unsigned int | |
1355 | insn_length (const struct mips_cl_insn *insn) | |
1356 | { | |
1357 | if (!mips_opts.mips16) | |
1358 | return 4; | |
1359 | return insn->mips16_absolute_jump_p || insn->use_extend ? 4 : 2; | |
1360 | } | |
1361 | ||
1362 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
1363 | ||
1364 | static void | |
1365 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
1366 | { | |
1367 | size_t i; | |
1368 | ||
1369 | insn->insn_mo = mo; | |
1370 | insn->use_extend = FALSE; | |
1371 | insn->extend = 0; | |
1372 | insn->insn_opcode = mo->match; | |
1373 | insn->frag = NULL; | |
1374 | insn->where = 0; | |
1375 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1376 | insn->fixp[i] = NULL; | |
1377 | insn->fixed_p = (mips_opts.noreorder > 0); | |
1378 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
1379 | insn->mips16_absolute_jump_p = 0; | |
1380 | } | |
1381 | ||
742a56fe RS |
1382 | /* Record the current MIPS16 mode in now_seg. */ |
1383 | ||
1384 | static void | |
1385 | mips_record_mips16_mode (void) | |
1386 | { | |
1387 | segment_info_type *si; | |
1388 | ||
1389 | si = seg_info (now_seg); | |
1390 | if (si->tc_segment_info_data.mips16 != mips_opts.mips16) | |
1391 | si->tc_segment_info_data.mips16 = mips_opts.mips16; | |
1392 | } | |
1393 | ||
1e915849 RS |
1394 | /* Install INSN at the location specified by its "frag" and "where" fields. */ |
1395 | ||
1396 | static void | |
1397 | install_insn (const struct mips_cl_insn *insn) | |
1398 | { | |
1399 | char *f = insn->frag->fr_literal + insn->where; | |
1400 | if (!mips_opts.mips16) | |
1401 | md_number_to_chars (f, insn->insn_opcode, 4); | |
1402 | else if (insn->mips16_absolute_jump_p) | |
1403 | { | |
1404 | md_number_to_chars (f, insn->insn_opcode >> 16, 2); | |
1405 | md_number_to_chars (f + 2, insn->insn_opcode & 0xffff, 2); | |
1406 | } | |
1407 | else | |
1408 | { | |
1409 | if (insn->use_extend) | |
1410 | { | |
1411 | md_number_to_chars (f, 0xf000 | insn->extend, 2); | |
1412 | f += 2; | |
1413 | } | |
1414 | md_number_to_chars (f, insn->insn_opcode, 2); | |
1415 | } | |
742a56fe | 1416 | mips_record_mips16_mode (); |
1e915849 RS |
1417 | } |
1418 | ||
1419 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
1420 | and install the opcode in the new location. */ | |
1421 | ||
1422 | static void | |
1423 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
1424 | { | |
1425 | size_t i; | |
1426 | ||
1427 | insn->frag = frag; | |
1428 | insn->where = where; | |
1429 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1430 | if (insn->fixp[i] != NULL) | |
1431 | { | |
1432 | insn->fixp[i]->fx_frag = frag; | |
1433 | insn->fixp[i]->fx_where = where; | |
1434 | } | |
1435 | install_insn (insn); | |
1436 | } | |
1437 | ||
1438 | /* Add INSN to the end of the output. */ | |
1439 | ||
1440 | static void | |
1441 | add_fixed_insn (struct mips_cl_insn *insn) | |
1442 | { | |
1443 | char *f = frag_more (insn_length (insn)); | |
1444 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
1445 | } | |
1446 | ||
1447 | /* Start a variant frag and move INSN to the start of the variant part, | |
1448 | marking it as fixed. The other arguments are as for frag_var. */ | |
1449 | ||
1450 | static void | |
1451 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
1452 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
1453 | { | |
1454 | frag_grow (max_chars); | |
1455 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
1456 | insn->fixed_p = 1; | |
1457 | frag_var (rs_machine_dependent, max_chars, var, | |
1458 | subtype, symbol, offset, NULL); | |
1459 | } | |
1460 | ||
1461 | /* Insert N copies of INSN into the history buffer, starting at | |
1462 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
1463 | ||
1464 | static void | |
1465 | insert_into_history (unsigned int first, unsigned int n, | |
1466 | const struct mips_cl_insn *insn) | |
1467 | { | |
1468 | if (mips_relax.sequence != 2) | |
1469 | { | |
1470 | unsigned int i; | |
1471 | ||
1472 | for (i = ARRAY_SIZE (history); i-- > first;) | |
1473 | if (i >= first + n) | |
1474 | history[i] = history[i - n]; | |
1475 | else | |
1476 | history[i] = *insn; | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | /* Emit a nop instruction, recording it in the history buffer. */ | |
1481 | ||
1482 | static void | |
1483 | emit_nop (void) | |
1484 | { | |
1485 | add_fixed_insn (NOP_INSN); | |
1486 | insert_into_history (0, 1, NOP_INSN); | |
1487 | } | |
1488 | ||
71400594 RS |
1489 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
1490 | the idea is to make it obvious at a glance that each errata is | |
1491 | included. */ | |
1492 | ||
1493 | static void | |
1494 | init_vr4120_conflicts (void) | |
1495 | { | |
1496 | #define CONFLICT(FIRST, SECOND) \ | |
1497 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
1498 | ||
1499 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
1500 | CONFLICT (MACC, DIV); | |
1501 | CONFLICT (DMACC, DIV); | |
1502 | ||
1503 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
1504 | CONFLICT (DMULT, DMULT); | |
1505 | CONFLICT (DMULT, DMACC); | |
1506 | CONFLICT (DMACC, DMULT); | |
1507 | CONFLICT (DMACC, DMACC); | |
1508 | ||
1509 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
1510 | CONFLICT (MACC, MTHILO); | |
1511 | CONFLICT (DMACC, MTHILO); | |
1512 | ||
1513 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
1514 | instruction is executed immediately after a MACC or DMACC | |
1515 | instruction, the result of [either instruction] is incorrect." */ | |
1516 | CONFLICT (MACC, MULT); | |
1517 | CONFLICT (MACC, DMULT); | |
1518 | CONFLICT (DMACC, MULT); | |
1519 | CONFLICT (DMACC, DMULT); | |
1520 | ||
1521 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
1522 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
1523 | DDIV or DDIVU instruction, the result of the MACC or | |
1524 | DMACC instruction is incorrect.". */ | |
1525 | CONFLICT (DMULT, MACC); | |
1526 | CONFLICT (DMULT, DMACC); | |
1527 | CONFLICT (DIV, MACC); | |
1528 | CONFLICT (DIV, DMACC); | |
1529 | ||
1530 | #undef CONFLICT | |
1531 | } | |
1532 | ||
707bfff6 TS |
1533 | struct regname { |
1534 | const char *name; | |
1535 | unsigned int num; | |
1536 | }; | |
1537 | ||
1538 | #define RTYPE_MASK 0x1ff00 | |
1539 | #define RTYPE_NUM 0x00100 | |
1540 | #define RTYPE_FPU 0x00200 | |
1541 | #define RTYPE_FCC 0x00400 | |
1542 | #define RTYPE_VEC 0x00800 | |
1543 | #define RTYPE_GP 0x01000 | |
1544 | #define RTYPE_CP0 0x02000 | |
1545 | #define RTYPE_PC 0x04000 | |
1546 | #define RTYPE_ACC 0x08000 | |
1547 | #define RTYPE_CCC 0x10000 | |
1548 | #define RNUM_MASK 0x000ff | |
1549 | #define RWARN 0x80000 | |
1550 | ||
1551 | #define GENERIC_REGISTER_NUMBERS \ | |
1552 | {"$0", RTYPE_NUM | 0}, \ | |
1553 | {"$1", RTYPE_NUM | 1}, \ | |
1554 | {"$2", RTYPE_NUM | 2}, \ | |
1555 | {"$3", RTYPE_NUM | 3}, \ | |
1556 | {"$4", RTYPE_NUM | 4}, \ | |
1557 | {"$5", RTYPE_NUM | 5}, \ | |
1558 | {"$6", RTYPE_NUM | 6}, \ | |
1559 | {"$7", RTYPE_NUM | 7}, \ | |
1560 | {"$8", RTYPE_NUM | 8}, \ | |
1561 | {"$9", RTYPE_NUM | 9}, \ | |
1562 | {"$10", RTYPE_NUM | 10}, \ | |
1563 | {"$11", RTYPE_NUM | 11}, \ | |
1564 | {"$12", RTYPE_NUM | 12}, \ | |
1565 | {"$13", RTYPE_NUM | 13}, \ | |
1566 | {"$14", RTYPE_NUM | 14}, \ | |
1567 | {"$15", RTYPE_NUM | 15}, \ | |
1568 | {"$16", RTYPE_NUM | 16}, \ | |
1569 | {"$17", RTYPE_NUM | 17}, \ | |
1570 | {"$18", RTYPE_NUM | 18}, \ | |
1571 | {"$19", RTYPE_NUM | 19}, \ | |
1572 | {"$20", RTYPE_NUM | 20}, \ | |
1573 | {"$21", RTYPE_NUM | 21}, \ | |
1574 | {"$22", RTYPE_NUM | 22}, \ | |
1575 | {"$23", RTYPE_NUM | 23}, \ | |
1576 | {"$24", RTYPE_NUM | 24}, \ | |
1577 | {"$25", RTYPE_NUM | 25}, \ | |
1578 | {"$26", RTYPE_NUM | 26}, \ | |
1579 | {"$27", RTYPE_NUM | 27}, \ | |
1580 | {"$28", RTYPE_NUM | 28}, \ | |
1581 | {"$29", RTYPE_NUM | 29}, \ | |
1582 | {"$30", RTYPE_NUM | 30}, \ | |
1583 | {"$31", RTYPE_NUM | 31} | |
1584 | ||
1585 | #define FPU_REGISTER_NAMES \ | |
1586 | {"$f0", RTYPE_FPU | 0}, \ | |
1587 | {"$f1", RTYPE_FPU | 1}, \ | |
1588 | {"$f2", RTYPE_FPU | 2}, \ | |
1589 | {"$f3", RTYPE_FPU | 3}, \ | |
1590 | {"$f4", RTYPE_FPU | 4}, \ | |
1591 | {"$f5", RTYPE_FPU | 5}, \ | |
1592 | {"$f6", RTYPE_FPU | 6}, \ | |
1593 | {"$f7", RTYPE_FPU | 7}, \ | |
1594 | {"$f8", RTYPE_FPU | 8}, \ | |
1595 | {"$f9", RTYPE_FPU | 9}, \ | |
1596 | {"$f10", RTYPE_FPU | 10}, \ | |
1597 | {"$f11", RTYPE_FPU | 11}, \ | |
1598 | {"$f12", RTYPE_FPU | 12}, \ | |
1599 | {"$f13", RTYPE_FPU | 13}, \ | |
1600 | {"$f14", RTYPE_FPU | 14}, \ | |
1601 | {"$f15", RTYPE_FPU | 15}, \ | |
1602 | {"$f16", RTYPE_FPU | 16}, \ | |
1603 | {"$f17", RTYPE_FPU | 17}, \ | |
1604 | {"$f18", RTYPE_FPU | 18}, \ | |
1605 | {"$f19", RTYPE_FPU | 19}, \ | |
1606 | {"$f20", RTYPE_FPU | 20}, \ | |
1607 | {"$f21", RTYPE_FPU | 21}, \ | |
1608 | {"$f22", RTYPE_FPU | 22}, \ | |
1609 | {"$f23", RTYPE_FPU | 23}, \ | |
1610 | {"$f24", RTYPE_FPU | 24}, \ | |
1611 | {"$f25", RTYPE_FPU | 25}, \ | |
1612 | {"$f26", RTYPE_FPU | 26}, \ | |
1613 | {"$f27", RTYPE_FPU | 27}, \ | |
1614 | {"$f28", RTYPE_FPU | 28}, \ | |
1615 | {"$f29", RTYPE_FPU | 29}, \ | |
1616 | {"$f30", RTYPE_FPU | 30}, \ | |
1617 | {"$f31", RTYPE_FPU | 31} | |
1618 | ||
1619 | #define FPU_CONDITION_CODE_NAMES \ | |
1620 | {"$fcc0", RTYPE_FCC | 0}, \ | |
1621 | {"$fcc1", RTYPE_FCC | 1}, \ | |
1622 | {"$fcc2", RTYPE_FCC | 2}, \ | |
1623 | {"$fcc3", RTYPE_FCC | 3}, \ | |
1624 | {"$fcc4", RTYPE_FCC | 4}, \ | |
1625 | {"$fcc5", RTYPE_FCC | 5}, \ | |
1626 | {"$fcc6", RTYPE_FCC | 6}, \ | |
1627 | {"$fcc7", RTYPE_FCC | 7} | |
1628 | ||
1629 | #define COPROC_CONDITION_CODE_NAMES \ | |
1630 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
1631 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
1632 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
1633 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
1634 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
1635 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
1636 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
1637 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
1638 | ||
1639 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
1640 | {"$a4", RTYPE_GP | 8}, \ | |
1641 | {"$a5", RTYPE_GP | 9}, \ | |
1642 | {"$a6", RTYPE_GP | 10}, \ | |
1643 | {"$a7", RTYPE_GP | 11}, \ | |
1644 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
1645 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
1646 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
1647 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
1648 | {"$t0", RTYPE_GP | 12}, \ | |
1649 | {"$t1", RTYPE_GP | 13}, \ | |
1650 | {"$t2", RTYPE_GP | 14}, \ | |
1651 | {"$t3", RTYPE_GP | 15} | |
1652 | ||
1653 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
1654 | {"$t0", RTYPE_GP | 8}, \ | |
1655 | {"$t1", RTYPE_GP | 9}, \ | |
1656 | {"$t2", RTYPE_GP | 10}, \ | |
1657 | {"$t3", RTYPE_GP | 11}, \ | |
1658 | {"$t4", RTYPE_GP | 12}, \ | |
1659 | {"$t5", RTYPE_GP | 13}, \ | |
1660 | {"$t6", RTYPE_GP | 14}, \ | |
1661 | {"$t7", RTYPE_GP | 15}, \ | |
1662 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
1663 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
1664 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
1665 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ | |
1666 | ||
1667 | /* Remaining symbolic register names */ | |
1668 | #define SYMBOLIC_REGISTER_NAMES \ | |
1669 | {"$zero", RTYPE_GP | 0}, \ | |
1670 | {"$at", RTYPE_GP | 1}, \ | |
1671 | {"$AT", RTYPE_GP | 1}, \ | |
1672 | {"$v0", RTYPE_GP | 2}, \ | |
1673 | {"$v1", RTYPE_GP | 3}, \ | |
1674 | {"$a0", RTYPE_GP | 4}, \ | |
1675 | {"$a1", RTYPE_GP | 5}, \ | |
1676 | {"$a2", RTYPE_GP | 6}, \ | |
1677 | {"$a3", RTYPE_GP | 7}, \ | |
1678 | {"$s0", RTYPE_GP | 16}, \ | |
1679 | {"$s1", RTYPE_GP | 17}, \ | |
1680 | {"$s2", RTYPE_GP | 18}, \ | |
1681 | {"$s3", RTYPE_GP | 19}, \ | |
1682 | {"$s4", RTYPE_GP | 20}, \ | |
1683 | {"$s5", RTYPE_GP | 21}, \ | |
1684 | {"$s6", RTYPE_GP | 22}, \ | |
1685 | {"$s7", RTYPE_GP | 23}, \ | |
1686 | {"$t8", RTYPE_GP | 24}, \ | |
1687 | {"$t9", RTYPE_GP | 25}, \ | |
1688 | {"$k0", RTYPE_GP | 26}, \ | |
1689 | {"$kt0", RTYPE_GP | 26}, \ | |
1690 | {"$k1", RTYPE_GP | 27}, \ | |
1691 | {"$kt1", RTYPE_GP | 27}, \ | |
1692 | {"$gp", RTYPE_GP | 28}, \ | |
1693 | {"$sp", RTYPE_GP | 29}, \ | |
1694 | {"$s8", RTYPE_GP | 30}, \ | |
1695 | {"$fp", RTYPE_GP | 30}, \ | |
1696 | {"$ra", RTYPE_GP | 31} | |
1697 | ||
1698 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
1699 | {"$pc", RTYPE_PC | 0} | |
1700 | ||
1701 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
1702 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
1703 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
1704 | {"$v2", RTYPE_VEC | 2}, \ | |
1705 | {"$v3", RTYPE_VEC | 3}, \ | |
1706 | {"$v4", RTYPE_VEC | 4}, \ | |
1707 | {"$v5", RTYPE_VEC | 5}, \ | |
1708 | {"$v6", RTYPE_VEC | 6}, \ | |
1709 | {"$v7", RTYPE_VEC | 7}, \ | |
1710 | {"$v8", RTYPE_VEC | 8}, \ | |
1711 | {"$v9", RTYPE_VEC | 9}, \ | |
1712 | {"$v10", RTYPE_VEC | 10}, \ | |
1713 | {"$v11", RTYPE_VEC | 11}, \ | |
1714 | {"$v12", RTYPE_VEC | 12}, \ | |
1715 | {"$v13", RTYPE_VEC | 13}, \ | |
1716 | {"$v14", RTYPE_VEC | 14}, \ | |
1717 | {"$v15", RTYPE_VEC | 15}, \ | |
1718 | {"$v16", RTYPE_VEC | 16}, \ | |
1719 | {"$v17", RTYPE_VEC | 17}, \ | |
1720 | {"$v18", RTYPE_VEC | 18}, \ | |
1721 | {"$v19", RTYPE_VEC | 19}, \ | |
1722 | {"$v20", RTYPE_VEC | 20}, \ | |
1723 | {"$v21", RTYPE_VEC | 21}, \ | |
1724 | {"$v22", RTYPE_VEC | 22}, \ | |
1725 | {"$v23", RTYPE_VEC | 23}, \ | |
1726 | {"$v24", RTYPE_VEC | 24}, \ | |
1727 | {"$v25", RTYPE_VEC | 25}, \ | |
1728 | {"$v26", RTYPE_VEC | 26}, \ | |
1729 | {"$v27", RTYPE_VEC | 27}, \ | |
1730 | {"$v28", RTYPE_VEC | 28}, \ | |
1731 | {"$v29", RTYPE_VEC | 29}, \ | |
1732 | {"$v30", RTYPE_VEC | 30}, \ | |
1733 | {"$v31", RTYPE_VEC | 31} | |
1734 | ||
1735 | #define MIPS_DSP_ACCUMULATOR_NAMES \ | |
1736 | {"$ac0", RTYPE_ACC | 0}, \ | |
1737 | {"$ac1", RTYPE_ACC | 1}, \ | |
1738 | {"$ac2", RTYPE_ACC | 2}, \ | |
1739 | {"$ac3", RTYPE_ACC | 3} | |
1740 | ||
1741 | static const struct regname reg_names[] = { | |
1742 | GENERIC_REGISTER_NUMBERS, | |
1743 | FPU_REGISTER_NAMES, | |
1744 | FPU_CONDITION_CODE_NAMES, | |
1745 | COPROC_CONDITION_CODE_NAMES, | |
1746 | ||
1747 | /* The $txx registers depends on the abi, | |
1748 | these will be added later into the symbol table from | |
1749 | one of the tables below once mips_abi is set after | |
1750 | parsing of arguments from the command line. */ | |
1751 | SYMBOLIC_REGISTER_NAMES, | |
1752 | ||
1753 | MIPS16_SPECIAL_REGISTER_NAMES, | |
1754 | MDMX_VECTOR_REGISTER_NAMES, | |
1755 | MIPS_DSP_ACCUMULATOR_NAMES, | |
1756 | {0, 0} | |
1757 | }; | |
1758 | ||
1759 | static const struct regname reg_names_o32[] = { | |
1760 | O32_SYMBOLIC_REGISTER_NAMES, | |
1761 | {0, 0} | |
1762 | }; | |
1763 | ||
1764 | static const struct regname reg_names_n32n64[] = { | |
1765 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
1766 | {0, 0} | |
1767 | }; | |
1768 | ||
1769 | static int | |
1770 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
1771 | { | |
1772 | symbolS *symbolP; | |
1773 | char *e; | |
1774 | char save_c; | |
1775 | int reg = -1; | |
1776 | ||
1777 | /* Find end of name. */ | |
1778 | e = *s; | |
1779 | if (is_name_beginner (*e)) | |
1780 | ++e; | |
1781 | while (is_part_of_name (*e)) | |
1782 | ++e; | |
1783 | ||
1784 | /* Terminate name. */ | |
1785 | save_c = *e; | |
1786 | *e = '\0'; | |
1787 | ||
1788 | /* Look for a register symbol. */ | |
1789 | if ((symbolP = symbol_find (*s)) && S_GET_SEGMENT (symbolP) == reg_section) | |
1790 | { | |
1791 | int r = S_GET_VALUE (symbolP); | |
1792 | if (r & types) | |
1793 | reg = r & RNUM_MASK; | |
1794 | else if ((types & RTYPE_VEC) && (r & ~1) == (RTYPE_GP | 2)) | |
1795 | /* Convert GP reg $v0/1 to MDMX reg $v0/1! */ | |
1796 | reg = (r & RNUM_MASK) - 2; | |
1797 | } | |
1798 | /* Else see if this is a register defined in an itbl entry. */ | |
1799 | else if ((types & RTYPE_GP) && itbl_have_entries) | |
1800 | { | |
1801 | char *n = *s; | |
1802 | unsigned long r; | |
1803 | ||
1804 | if (*n == '$') | |
1805 | ++n; | |
1806 | if (itbl_get_reg_val (n, &r)) | |
1807 | reg = r & RNUM_MASK; | |
1808 | } | |
1809 | ||
1810 | /* Advance to next token if a register was recognised. */ | |
1811 | if (reg >= 0) | |
1812 | *s = e; | |
1813 | else if (types & RWARN) | |
20203fb9 | 1814 | as_warn (_("Unrecognized register name `%s'"), *s); |
707bfff6 TS |
1815 | |
1816 | *e = save_c; | |
1817 | if (regnop) | |
1818 | *regnop = reg; | |
1819 | return reg >= 0; | |
1820 | } | |
1821 | ||
037b32b9 | 1822 | /* Return TRUE if opcode MO is valid on the currently selected ISA and |
f79e2745 | 1823 | architecture. Use is_opcode_valid_16 for MIPS16 opcodes. */ |
037b32b9 AN |
1824 | |
1825 | static bfd_boolean | |
f79e2745 | 1826 | is_opcode_valid (const struct mips_opcode *mo) |
037b32b9 AN |
1827 | { |
1828 | int isa = mips_opts.isa; | |
1829 | int fp_s, fp_d; | |
1830 | ||
1831 | if (mips_opts.ase_mdmx) | |
1832 | isa |= INSN_MDMX; | |
1833 | if (mips_opts.ase_dsp) | |
1834 | isa |= INSN_DSP; | |
1835 | if (mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE) | |
1836 | isa |= INSN_DSP64; | |
1837 | if (mips_opts.ase_dspr2) | |
1838 | isa |= INSN_DSPR2; | |
1839 | if (mips_opts.ase_mt) | |
1840 | isa |= INSN_MT; | |
1841 | if (mips_opts.ase_mips3d) | |
1842 | isa |= INSN_MIPS3D; | |
1843 | if (mips_opts.ase_smartmips) | |
1844 | isa |= INSN_SMARTMIPS; | |
1845 | ||
b19e8a9b AN |
1846 | /* Don't accept instructions based on the ISA if the CPU does not implement |
1847 | all the coprocessor insns. */ | |
1848 | if (NO_ISA_COP (mips_opts.arch) | |
1849 | && COP_INSN (mo->pinfo)) | |
1850 | isa = 0; | |
1851 | ||
037b32b9 AN |
1852 | if (!OPCODE_IS_MEMBER (mo, isa, mips_opts.arch)) |
1853 | return FALSE; | |
1854 | ||
1855 | /* Check whether the instruction or macro requires single-precision or | |
1856 | double-precision floating-point support. Note that this information is | |
1857 | stored differently in the opcode table for insns and macros. */ | |
1858 | if (mo->pinfo == INSN_MACRO) | |
1859 | { | |
1860 | fp_s = mo->pinfo2 & INSN2_M_FP_S; | |
1861 | fp_d = mo->pinfo2 & INSN2_M_FP_D; | |
1862 | } | |
1863 | else | |
1864 | { | |
1865 | fp_s = mo->pinfo & FP_S; | |
1866 | fp_d = mo->pinfo & FP_D; | |
1867 | } | |
1868 | ||
1869 | if (fp_d && (mips_opts.soft_float || mips_opts.single_float)) | |
1870 | return FALSE; | |
1871 | ||
1872 | if (fp_s && mips_opts.soft_float) | |
1873 | return FALSE; | |
1874 | ||
1875 | return TRUE; | |
1876 | } | |
1877 | ||
1878 | /* Return TRUE if the MIPS16 opcode MO is valid on the currently | |
1879 | selected ISA and architecture. */ | |
1880 | ||
1881 | static bfd_boolean | |
1882 | is_opcode_valid_16 (const struct mips_opcode *mo) | |
1883 | { | |
1884 | return OPCODE_IS_MEMBER (mo, mips_opts.isa, mips_opts.arch) ? TRUE : FALSE; | |
1885 | } | |
1886 | ||
707bfff6 TS |
1887 | /* This function is called once, at assembler startup time. It should set up |
1888 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 1889 | |
252b5132 | 1890 | void |
17a2f251 | 1891 | md_begin (void) |
252b5132 | 1892 | { |
3994f87e | 1893 | const char *retval = NULL; |
156c2f8b | 1894 | int i = 0; |
252b5132 | 1895 | int broken = 0; |
1f25f5d3 | 1896 | |
0a44bf69 RS |
1897 | if (mips_pic != NO_PIC) |
1898 | { | |
1899 | if (g_switch_seen && g_switch_value != 0) | |
1900 | as_bad (_("-G may not be used in position-independent code")); | |
1901 | g_switch_value = 0; | |
1902 | } | |
1903 | ||
fef14a42 | 1904 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch)) |
252b5132 RH |
1905 | as_warn (_("Could not set architecture and machine")); |
1906 | ||
252b5132 RH |
1907 | op_hash = hash_new (); |
1908 | ||
1909 | for (i = 0; i < NUMOPCODES;) | |
1910 | { | |
1911 | const char *name = mips_opcodes[i].name; | |
1912 | ||
17a2f251 | 1913 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
1914 | if (retval != NULL) |
1915 | { | |
1916 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
1917 | mips_opcodes[i].name, retval); | |
1918 | /* Probably a memory allocation problem? Give up now. */ | |
1919 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1920 | } | |
1921 | do | |
1922 | { | |
1923 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
1924 | { | |
1925 | if (!validate_mips_insn (&mips_opcodes[i])) | |
1926 | broken = 1; | |
1e915849 RS |
1927 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
1928 | { | |
1929 | create_insn (&nop_insn, mips_opcodes + i); | |
c67a084a NC |
1930 | if (mips_fix_loongson2f_nop) |
1931 | nop_insn.insn_opcode = LOONGSON2F_NOP_INSN; | |
1e915849 RS |
1932 | nop_insn.fixed_p = 1; |
1933 | } | |
252b5132 RH |
1934 | } |
1935 | ++i; | |
1936 | } | |
1937 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
1938 | } | |
1939 | ||
1940 | mips16_op_hash = hash_new (); | |
1941 | ||
1942 | i = 0; | |
1943 | while (i < bfd_mips16_num_opcodes) | |
1944 | { | |
1945 | const char *name = mips16_opcodes[i].name; | |
1946 | ||
17a2f251 | 1947 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
1948 | if (retval != NULL) |
1949 | as_fatal (_("internal: can't hash `%s': %s"), | |
1950 | mips16_opcodes[i].name, retval); | |
1951 | do | |
1952 | { | |
1953 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
1954 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
1955 | != mips16_opcodes[i].match)) | |
1956 | { | |
1957 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
1958 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
1959 | broken = 1; | |
1960 | } | |
1e915849 RS |
1961 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
1962 | { | |
1963 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
1964 | mips16_nop_insn.fixed_p = 1; | |
1965 | } | |
252b5132 RH |
1966 | ++i; |
1967 | } | |
1968 | while (i < bfd_mips16_num_opcodes | |
1969 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
1970 | } | |
1971 | ||
1972 | if (broken) | |
1973 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1974 | ||
1975 | /* We add all the general register names to the symbol table. This | |
1976 | helps us detect invalid uses of them. */ | |
707bfff6 TS |
1977 | for (i = 0; reg_names[i].name; i++) |
1978 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, | |
8fc4ee9b | 1979 | reg_names[i].num, /* & RNUM_MASK, */ |
707bfff6 TS |
1980 | &zero_address_frag)); |
1981 | if (HAVE_NEWABI) | |
1982 | for (i = 0; reg_names_n32n64[i].name; i++) | |
1983 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, | |
8fc4ee9b | 1984 | reg_names_n32n64[i].num, /* & RNUM_MASK, */ |
252b5132 | 1985 | &zero_address_frag)); |
707bfff6 TS |
1986 | else |
1987 | for (i = 0; reg_names_o32[i].name; i++) | |
1988 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, | |
8fc4ee9b | 1989 | reg_names_o32[i].num, /* & RNUM_MASK, */ |
6047c971 | 1990 | &zero_address_frag)); |
6047c971 | 1991 | |
7d10b47d | 1992 | mips_no_prev_insn (); |
252b5132 RH |
1993 | |
1994 | mips_gprmask = 0; | |
1995 | mips_cprmask[0] = 0; | |
1996 | mips_cprmask[1] = 0; | |
1997 | mips_cprmask[2] = 0; | |
1998 | mips_cprmask[3] = 0; | |
1999 | ||
2000 | /* set the default alignment for the text section (2**2) */ | |
2001 | record_alignment (text_section, 2); | |
2002 | ||
4d0d148d | 2003 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 2004 | |
707bfff6 | 2005 | #ifdef OBJ_ELF |
f43abd2b | 2006 | if (IS_ELF) |
252b5132 | 2007 | { |
0a44bf69 RS |
2008 | /* On a native system other than VxWorks, sections must be aligned |
2009 | to 16 byte boundaries. When configured for an embedded ELF | |
2010 | target, we don't bother. */ | |
c41e87e3 CF |
2011 | if (strncmp (TARGET_OS, "elf", 3) != 0 |
2012 | && strncmp (TARGET_OS, "vxworks", 7) != 0) | |
252b5132 RH |
2013 | { |
2014 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
2015 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
2016 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
2017 | } | |
2018 | ||
2019 | /* Create a .reginfo section for register masks and a .mdebug | |
2020 | section for debugging information. */ | |
2021 | { | |
2022 | segT seg; | |
2023 | subsegT subseg; | |
2024 | flagword flags; | |
2025 | segT sec; | |
2026 | ||
2027 | seg = now_seg; | |
2028 | subseg = now_subseg; | |
2029 | ||
2030 | /* The ABI says this section should be loaded so that the | |
2031 | running program can access it. However, we don't load it | |
2032 | if we are configured for an embedded target */ | |
2033 | flags = SEC_READONLY | SEC_DATA; | |
c41e87e3 | 2034 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
2035 | flags |= SEC_ALLOC | SEC_LOAD; |
2036 | ||
316f5878 | 2037 | if (mips_abi != N64_ABI) |
252b5132 RH |
2038 | { |
2039 | sec = subseg_new (".reginfo", (subsegT) 0); | |
2040 | ||
195325d2 TS |
2041 | bfd_set_section_flags (stdoutput, sec, flags); |
2042 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 2043 | |
252b5132 | 2044 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
252b5132 RH |
2045 | } |
2046 | else | |
2047 | { | |
2048 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
2049 | .reginfo section. */ | |
2050 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
2051 | bfd_set_section_flags (stdoutput, sec, flags); |
2052 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 2053 | |
252b5132 RH |
2054 | /* Set up the option header. */ |
2055 | { | |
2056 | Elf_Internal_Options opthdr; | |
2057 | char *f; | |
2058 | ||
2059 | opthdr.kind = ODK_REGINFO; | |
2060 | opthdr.size = (sizeof (Elf_External_Options) | |
2061 | + sizeof (Elf64_External_RegInfo)); | |
2062 | opthdr.section = 0; | |
2063 | opthdr.info = 0; | |
2064 | f = frag_more (sizeof (Elf_External_Options)); | |
2065 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
2066 | (Elf_External_Options *) f); | |
2067 | ||
2068 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
2069 | } | |
252b5132 RH |
2070 | } |
2071 | ||
2072 | if (ECOFF_DEBUGGING) | |
2073 | { | |
2074 | sec = subseg_new (".mdebug", (subsegT) 0); | |
2075 | (void) bfd_set_section_flags (stdoutput, sec, | |
2076 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2077 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
2078 | } | |
f43abd2b | 2079 | else if (mips_flag_pdr) |
ecb4347a DJ |
2080 | { |
2081 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
2082 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
2083 | SEC_READONLY | SEC_RELOC | |
2084 | | SEC_DEBUGGING); | |
2085 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
2086 | } | |
252b5132 RH |
2087 | |
2088 | subseg_set (seg, subseg); | |
2089 | } | |
2090 | } | |
707bfff6 | 2091 | #endif /* OBJ_ELF */ |
252b5132 RH |
2092 | |
2093 | if (! ECOFF_DEBUGGING) | |
2094 | md_obj_begin (); | |
71400594 RS |
2095 | |
2096 | if (mips_fix_vr4120) | |
2097 | init_vr4120_conflicts (); | |
252b5132 RH |
2098 | } |
2099 | ||
2100 | void | |
17a2f251 | 2101 | md_mips_end (void) |
252b5132 RH |
2102 | { |
2103 | if (! ECOFF_DEBUGGING) | |
2104 | md_obj_end (); | |
2105 | } | |
2106 | ||
2107 | void | |
17a2f251 | 2108 | md_assemble (char *str) |
252b5132 RH |
2109 | { |
2110 | struct mips_cl_insn insn; | |
f6688943 TS |
2111 | bfd_reloc_code_real_type unused_reloc[3] |
2112 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
2113 | |
2114 | imm_expr.X_op = O_absent; | |
5f74bc13 | 2115 | imm2_expr.X_op = O_absent; |
252b5132 | 2116 | offset_expr.X_op = O_absent; |
f6688943 TS |
2117 | imm_reloc[0] = BFD_RELOC_UNUSED; |
2118 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
2119 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
2120 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
2121 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
2122 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2123 | |
2124 | if (mips_opts.mips16) | |
2125 | mips16_ip (str, &insn); | |
2126 | else | |
2127 | { | |
2128 | mips_ip (str, &insn); | |
beae10d5 KH |
2129 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
2130 | str, insn.insn_opcode)); | |
252b5132 RH |
2131 | } |
2132 | ||
2133 | if (insn_error) | |
2134 | { | |
2135 | as_bad ("%s `%s'", insn_error, str); | |
2136 | return; | |
2137 | } | |
2138 | ||
2139 | if (insn.insn_mo->pinfo == INSN_MACRO) | |
2140 | { | |
584892a6 | 2141 | macro_start (); |
252b5132 RH |
2142 | if (mips_opts.mips16) |
2143 | mips16_macro (&insn); | |
2144 | else | |
2145 | macro (&insn); | |
584892a6 | 2146 | macro_end (); |
252b5132 RH |
2147 | } |
2148 | else | |
2149 | { | |
2150 | if (imm_expr.X_op != O_absent) | |
4d7206a2 | 2151 | append_insn (&insn, &imm_expr, imm_reloc); |
252b5132 | 2152 | else if (offset_expr.X_op != O_absent) |
4d7206a2 | 2153 | append_insn (&insn, &offset_expr, offset_reloc); |
252b5132 | 2154 | else |
4d7206a2 | 2155 | append_insn (&insn, NULL, unused_reloc); |
252b5132 RH |
2156 | } |
2157 | } | |
2158 | ||
738e5348 RS |
2159 | /* Convenience functions for abstracting away the differences between |
2160 | MIPS16 and non-MIPS16 relocations. */ | |
2161 | ||
2162 | static inline bfd_boolean | |
2163 | mips16_reloc_p (bfd_reloc_code_real_type reloc) | |
2164 | { | |
2165 | switch (reloc) | |
2166 | { | |
2167 | case BFD_RELOC_MIPS16_JMP: | |
2168 | case BFD_RELOC_MIPS16_GPREL: | |
2169 | case BFD_RELOC_MIPS16_GOT16: | |
2170 | case BFD_RELOC_MIPS16_CALL16: | |
2171 | case BFD_RELOC_MIPS16_HI16_S: | |
2172 | case BFD_RELOC_MIPS16_HI16: | |
2173 | case BFD_RELOC_MIPS16_LO16: | |
2174 | return TRUE; | |
2175 | ||
2176 | default: | |
2177 | return FALSE; | |
2178 | } | |
2179 | } | |
2180 | ||
2181 | static inline bfd_boolean | |
2182 | got16_reloc_p (bfd_reloc_code_real_type reloc) | |
2183 | { | |
2184 | return reloc == BFD_RELOC_MIPS_GOT16 || reloc == BFD_RELOC_MIPS16_GOT16; | |
2185 | } | |
2186 | ||
2187 | static inline bfd_boolean | |
2188 | hi16_reloc_p (bfd_reloc_code_real_type reloc) | |
2189 | { | |
2190 | return reloc == BFD_RELOC_HI16_S || reloc == BFD_RELOC_MIPS16_HI16_S; | |
2191 | } | |
2192 | ||
2193 | static inline bfd_boolean | |
2194 | lo16_reloc_p (bfd_reloc_code_real_type reloc) | |
2195 | { | |
2196 | return reloc == BFD_RELOC_LO16 || reloc == BFD_RELOC_MIPS16_LO16; | |
2197 | } | |
2198 | ||
5919d012 | 2199 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
2200 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
2201 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
2202 | |
2203 | static inline bfd_boolean | |
17a2f251 | 2204 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 2205 | { |
3b91255e | 2206 | return (HAVE_IN_PLACE_ADDENDS |
738e5348 | 2207 | && (hi16_reloc_p (reloc) |
0a44bf69 RS |
2208 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); |
2209 | all GOT16 relocations evaluate to "G". */ | |
738e5348 RS |
2210 | || (got16_reloc_p (reloc) && mips_pic != VXWORKS_PIC))); |
2211 | } | |
2212 | ||
2213 | /* Return the type of %lo() reloc needed by RELOC, given that | |
2214 | reloc_needs_lo_p. */ | |
2215 | ||
2216 | static inline bfd_reloc_code_real_type | |
2217 | matching_lo_reloc (bfd_reloc_code_real_type reloc) | |
2218 | { | |
2219 | return mips16_reloc_p (reloc) ? BFD_RELOC_MIPS16_LO16 : BFD_RELOC_LO16; | |
5919d012 RS |
2220 | } |
2221 | ||
2222 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
2223 | relocation. */ | |
2224 | ||
2225 | static inline bfd_boolean | |
17a2f251 | 2226 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
2227 | { |
2228 | return (fixp->fx_next != NULL | |
738e5348 | 2229 | && fixp->fx_next->fx_r_type == matching_lo_reloc (fixp->fx_r_type) |
5919d012 RS |
2230 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
2231 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
2232 | } | |
2233 | ||
252b5132 RH |
2234 | /* See whether instruction IP reads register REG. CLASS is the type |
2235 | of register. */ | |
2236 | ||
2237 | static int | |
71400594 | 2238 | insn_uses_reg (const struct mips_cl_insn *ip, unsigned int reg, |
96d56e9f | 2239 | enum mips_regclass regclass) |
252b5132 | 2240 | { |
96d56e9f | 2241 | if (regclass == MIPS16_REG) |
252b5132 | 2242 | { |
9c2799c2 | 2243 | gas_assert (mips_opts.mips16); |
252b5132 | 2244 | reg = mips16_to_32_reg_map[reg]; |
96d56e9f | 2245 | regclass = MIPS_GR_REG; |
252b5132 RH |
2246 | } |
2247 | ||
85b51719 | 2248 | /* Don't report on general register ZERO, since it never changes. */ |
96d56e9f | 2249 | if (regclass == MIPS_GR_REG && reg == ZERO) |
252b5132 RH |
2250 | return 0; |
2251 | ||
96d56e9f | 2252 | if (regclass == MIPS_FP_REG) |
252b5132 | 2253 | { |
9c2799c2 | 2254 | gas_assert (! mips_opts.mips16); |
252b5132 RH |
2255 | /* If we are called with either $f0 or $f1, we must check $f0. |
2256 | This is not optimal, because it will introduce an unnecessary | |
2257 | NOP between "lwc1 $f0" and "swc1 $f1". To fix this we would | |
2258 | need to distinguish reading both $f0 and $f1 or just one of | |
2259 | them. Note that we don't have to check the other way, | |
2260 | because there is no instruction that sets both $f0 and $f1 | |
2261 | and requires a delay. */ | |
2262 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_S) | |
bf12938e | 2263 | && ((EXTRACT_OPERAND (FS, *ip) & ~(unsigned) 1) |
252b5132 RH |
2264 | == (reg &~ (unsigned) 1))) |
2265 | return 1; | |
2266 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_T) | |
bf12938e | 2267 | && ((EXTRACT_OPERAND (FT, *ip) & ~(unsigned) 1) |
252b5132 RH |
2268 | == (reg &~ (unsigned) 1))) |
2269 | return 1; | |
2270 | } | |
2271 | else if (! mips_opts.mips16) | |
2272 | { | |
2273 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_S) | |
bf12938e | 2274 | && EXTRACT_OPERAND (RS, *ip) == reg) |
252b5132 RH |
2275 | return 1; |
2276 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_T) | |
bf12938e | 2277 | && EXTRACT_OPERAND (RT, *ip) == reg) |
252b5132 RH |
2278 | return 1; |
2279 | } | |
2280 | else | |
2281 | { | |
2282 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_X) | |
bf12938e | 2283 | && mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)] == reg) |
252b5132 RH |
2284 | return 1; |
2285 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Y) | |
bf12938e | 2286 | && mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)] == reg) |
252b5132 RH |
2287 | return 1; |
2288 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Z) | |
bf12938e | 2289 | && (mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip)] |
252b5132 RH |
2290 | == reg)) |
2291 | return 1; | |
2292 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_T) && reg == TREG) | |
2293 | return 1; | |
2294 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_SP) && reg == SP) | |
2295 | return 1; | |
2296 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_31) && reg == RA) | |
2297 | return 1; | |
2298 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_GPR_X) | |
bf12938e | 2299 | && MIPS16_EXTRACT_OPERAND (REGR32, *ip) == reg) |
252b5132 RH |
2300 | return 1; |
2301 | } | |
2302 | ||
2303 | return 0; | |
2304 | } | |
2305 | ||
2306 | /* This function returns true if modifying a register requires a | |
2307 | delay. */ | |
2308 | ||
2309 | static int | |
17a2f251 | 2310 | reg_needs_delay (unsigned int reg) |
252b5132 RH |
2311 | { |
2312 | unsigned long prev_pinfo; | |
2313 | ||
47e39b9d | 2314 | prev_pinfo = history[0].insn_mo->pinfo; |
252b5132 | 2315 | if (! mips_opts.noreorder |
81912461 ILT |
2316 | && (((prev_pinfo & INSN_LOAD_MEMORY_DELAY) |
2317 | && ! gpr_interlocks) | |
2318 | || ((prev_pinfo & INSN_LOAD_COPROC_DELAY) | |
2319 | && ! cop_interlocks))) | |
252b5132 | 2320 | { |
81912461 ILT |
2321 | /* A load from a coprocessor or from memory. All load delays |
2322 | delay the use of general register rt for one instruction. */ | |
bdaaa2e1 | 2323 | /* Itbl support may require additional care here. */ |
252b5132 | 2324 | know (prev_pinfo & INSN_WRITE_GPR_T); |
bf12938e | 2325 | if (reg == EXTRACT_OPERAND (RT, history[0])) |
252b5132 RH |
2326 | return 1; |
2327 | } | |
2328 | ||
2329 | return 0; | |
2330 | } | |
2331 | ||
404a8071 RS |
2332 | /* Move all labels in insn_labels to the current insertion point. */ |
2333 | ||
2334 | static void | |
2335 | mips_move_labels (void) | |
2336 | { | |
a8dbcb85 | 2337 | segment_info_type *si = seg_info (now_seg); |
404a8071 RS |
2338 | struct insn_label_list *l; |
2339 | valueT val; | |
2340 | ||
a8dbcb85 | 2341 | for (l = si->label_list; l != NULL; l = l->next) |
404a8071 | 2342 | { |
9c2799c2 | 2343 | gas_assert (S_GET_SEGMENT (l->label) == now_seg); |
404a8071 RS |
2344 | symbol_set_frag (l->label, frag_now); |
2345 | val = (valueT) frag_now_fix (); | |
2346 | /* mips16 text labels are stored as odd. */ | |
2347 | if (mips_opts.mips16) | |
2348 | ++val; | |
2349 | S_SET_VALUE (l->label, val); | |
2350 | } | |
2351 | } | |
2352 | ||
5f0fe04b TS |
2353 | static bfd_boolean |
2354 | s_is_linkonce (symbolS *sym, segT from_seg) | |
2355 | { | |
2356 | bfd_boolean linkonce = FALSE; | |
2357 | segT symseg = S_GET_SEGMENT (sym); | |
2358 | ||
2359 | if (symseg != from_seg && !S_IS_LOCAL (sym)) | |
2360 | { | |
2361 | if ((bfd_get_section_flags (stdoutput, symseg) & SEC_LINK_ONCE)) | |
2362 | linkonce = TRUE; | |
2363 | #ifdef OBJ_ELF | |
2364 | /* The GNU toolchain uses an extension for ELF: a section | |
2365 | beginning with the magic string .gnu.linkonce is a | |
2366 | linkonce section. */ | |
2367 | if (strncmp (segment_name (symseg), ".gnu.linkonce", | |
2368 | sizeof ".gnu.linkonce" - 1) == 0) | |
2369 | linkonce = TRUE; | |
2370 | #endif | |
2371 | } | |
2372 | return linkonce; | |
2373 | } | |
2374 | ||
252b5132 RH |
2375 | /* Mark instruction labels in mips16 mode. This permits the linker to |
2376 | handle them specially, such as generating jalx instructions when | |
2377 | needed. We also make them odd for the duration of the assembly, in | |
2378 | order to generate the right sort of code. We will make them even | |
2379 | in the adjust_symtab routine, while leaving them marked. This is | |
2380 | convenient for the debugger and the disassembler. The linker knows | |
2381 | to make them odd again. */ | |
2382 | ||
2383 | static void | |
17a2f251 | 2384 | mips16_mark_labels (void) |
252b5132 | 2385 | { |
a8dbcb85 TS |
2386 | segment_info_type *si = seg_info (now_seg); |
2387 | struct insn_label_list *l; | |
252b5132 | 2388 | |
a8dbcb85 TS |
2389 | if (!mips_opts.mips16) |
2390 | return; | |
2391 | ||
2392 | for (l = si->label_list; l != NULL; l = l->next) | |
2393 | { | |
2394 | symbolS *label = l->label; | |
2395 | ||
2396 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
f43abd2b | 2397 | if (IS_ELF) |
30c09090 | 2398 | S_SET_OTHER (label, ELF_ST_SET_MIPS16 (S_GET_OTHER (label))); |
252b5132 | 2399 | #endif |
5f0fe04b TS |
2400 | if ((S_GET_VALUE (label) & 1) == 0 |
2401 | /* Don't adjust the address if the label is global or weak, or | |
2402 | in a link-once section, since we'll be emitting symbol reloc | |
2403 | references to it which will be patched up by the linker, and | |
2404 | the final value of the symbol may or may not be MIPS16. */ | |
2405 | && ! S_IS_WEAK (label) | |
2406 | && ! S_IS_EXTERNAL (label) | |
2407 | && ! s_is_linkonce (label, now_seg)) | |
a8dbcb85 | 2408 | S_SET_VALUE (label, S_GET_VALUE (label) | 1); |
252b5132 RH |
2409 | } |
2410 | } | |
2411 | ||
4d7206a2 RS |
2412 | /* End the current frag. Make it a variant frag and record the |
2413 | relaxation info. */ | |
2414 | ||
2415 | static void | |
2416 | relax_close_frag (void) | |
2417 | { | |
584892a6 | 2418 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 2419 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 2420 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
2421 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
2422 | ||
2423 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
2424 | mips_relax.first_fixup = 0; | |
2425 | } | |
2426 | ||
2427 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
2428 | See the comment above RELAX_ENCODE for more details. */ | |
2429 | ||
2430 | static void | |
2431 | relax_start (symbolS *symbol) | |
2432 | { | |
9c2799c2 | 2433 | gas_assert (mips_relax.sequence == 0); |
4d7206a2 RS |
2434 | mips_relax.sequence = 1; |
2435 | mips_relax.symbol = symbol; | |
2436 | } | |
2437 | ||
2438 | /* Start generating the second version of a relaxable sequence. | |
2439 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
2440 | |
2441 | static void | |
4d7206a2 RS |
2442 | relax_switch (void) |
2443 | { | |
9c2799c2 | 2444 | gas_assert (mips_relax.sequence == 1); |
4d7206a2 RS |
2445 | mips_relax.sequence = 2; |
2446 | } | |
2447 | ||
2448 | /* End the current relaxable sequence. */ | |
2449 | ||
2450 | static void | |
2451 | relax_end (void) | |
2452 | { | |
9c2799c2 | 2453 | gas_assert (mips_relax.sequence == 2); |
4d7206a2 RS |
2454 | relax_close_frag (); |
2455 | mips_relax.sequence = 0; | |
2456 | } | |
2457 | ||
71400594 RS |
2458 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
2459 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
2460 | by VR4120 errata. */ | |
4d7206a2 | 2461 | |
71400594 RS |
2462 | static unsigned int |
2463 | classify_vr4120_insn (const char *name) | |
252b5132 | 2464 | { |
71400594 RS |
2465 | if (strncmp (name, "macc", 4) == 0) |
2466 | return FIX_VR4120_MACC; | |
2467 | if (strncmp (name, "dmacc", 5) == 0) | |
2468 | return FIX_VR4120_DMACC; | |
2469 | if (strncmp (name, "mult", 4) == 0) | |
2470 | return FIX_VR4120_MULT; | |
2471 | if (strncmp (name, "dmult", 5) == 0) | |
2472 | return FIX_VR4120_DMULT; | |
2473 | if (strstr (name, "div")) | |
2474 | return FIX_VR4120_DIV; | |
2475 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
2476 | return FIX_VR4120_MTHILO; | |
2477 | return NUM_FIX_VR4120_CLASSES; | |
2478 | } | |
252b5132 | 2479 | |
ff239038 CM |
2480 | #define INSN_ERET 0x42000018 |
2481 | #define INSN_DERET 0x4200001f | |
2482 | ||
71400594 RS |
2483 | /* Return the number of instructions that must separate INSN1 and INSN2, |
2484 | where INSN1 is the earlier instruction. Return the worst-case value | |
2485 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 2486 | |
71400594 RS |
2487 | static unsigned int |
2488 | insns_between (const struct mips_cl_insn *insn1, | |
2489 | const struct mips_cl_insn *insn2) | |
2490 | { | |
2491 | unsigned long pinfo1, pinfo2; | |
2492 | ||
2493 | /* This function needs to know which pinfo flags are set for INSN2 | |
2494 | and which registers INSN2 uses. The former is stored in PINFO2 and | |
2495 | the latter is tested via INSN2_USES_REG. If INSN2 is null, PINFO2 | |
2496 | will have every flag set and INSN2_USES_REG will always return true. */ | |
2497 | pinfo1 = insn1->insn_mo->pinfo; | |
2498 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 2499 | |
71400594 RS |
2500 | #define INSN2_USES_REG(REG, CLASS) \ |
2501 | (insn2 == NULL || insn_uses_reg (insn2, REG, CLASS)) | |
2502 | ||
2503 | /* For most targets, write-after-read dependencies on the HI and LO | |
2504 | registers must be separated by at least two instructions. */ | |
2505 | if (!hilo_interlocks) | |
252b5132 | 2506 | { |
71400594 RS |
2507 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
2508 | return 2; | |
2509 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
2510 | return 2; | |
2511 | } | |
2512 | ||
2513 | /* If we're working around r7000 errata, there must be two instructions | |
2514 | between an mfhi or mflo and any instruction that uses the result. */ | |
2515 | if (mips_7000_hilo_fix | |
2516 | && MF_HILO_INSN (pinfo1) | |
2517 | && INSN2_USES_REG (EXTRACT_OPERAND (RD, *insn1), MIPS_GR_REG)) | |
2518 | return 2; | |
2519 | ||
ff239038 CM |
2520 | /* If we're working around 24K errata, one instruction is required |
2521 | if an ERET or DERET is followed by a branch instruction. */ | |
2522 | if (mips_fix_24k) | |
2523 | { | |
2524 | if (insn1->insn_opcode == INSN_ERET | |
2525 | || insn1->insn_opcode == INSN_DERET) | |
2526 | { | |
2527 | if (insn2 == NULL | |
2528 | || insn2->insn_opcode == INSN_ERET | |
2529 | || insn2->insn_opcode == INSN_DERET | |
2530 | || (insn2->insn_mo->pinfo | |
2531 | & (INSN_UNCOND_BRANCH_DELAY | |
2532 | | INSN_COND_BRANCH_DELAY | |
2533 | | INSN_COND_BRANCH_LIKELY)) != 0) | |
2534 | return 1; | |
2535 | } | |
2536 | } | |
2537 | ||
71400594 RS |
2538 | /* If working around VR4120 errata, check for combinations that need |
2539 | a single intervening instruction. */ | |
2540 | if (mips_fix_vr4120) | |
2541 | { | |
2542 | unsigned int class1, class2; | |
252b5132 | 2543 | |
71400594 RS |
2544 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
2545 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 2546 | { |
71400594 RS |
2547 | if (insn2 == NULL) |
2548 | return 1; | |
2549 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
2550 | if (vr4120_conflicts[class1] & (1 << class2)) | |
2551 | return 1; | |
252b5132 | 2552 | } |
71400594 RS |
2553 | } |
2554 | ||
2555 | if (!mips_opts.mips16) | |
2556 | { | |
2557 | /* Check for GPR or coprocessor load delays. All such delays | |
2558 | are on the RT register. */ | |
2559 | /* Itbl support may require additional care here. */ | |
2560 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY_DELAY)) | |
2561 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC_DELAY))) | |
252b5132 | 2562 | { |
71400594 RS |
2563 | know (pinfo1 & INSN_WRITE_GPR_T); |
2564 | if (INSN2_USES_REG (EXTRACT_OPERAND (RT, *insn1), MIPS_GR_REG)) | |
2565 | return 1; | |
2566 | } | |
2567 | ||
2568 | /* Check for generic coprocessor hazards. | |
2569 | ||
2570 | This case is not handled very well. There is no special | |
2571 | knowledge of CP0 handling, and the coprocessors other than | |
2572 | the floating point unit are not distinguished at all. */ | |
2573 | /* Itbl support may require additional care here. FIXME! | |
2574 | Need to modify this to include knowledge about | |
2575 | user specified delays! */ | |
2576 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE_DELAY)) | |
2577 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) | |
2578 | { | |
2579 | /* Handle cases where INSN1 writes to a known general coprocessor | |
2580 | register. There must be a one instruction delay before INSN2 | |
2581 | if INSN2 reads that register, otherwise no delay is needed. */ | |
2582 | if (pinfo1 & INSN_WRITE_FPR_T) | |
252b5132 | 2583 | { |
71400594 RS |
2584 | if (INSN2_USES_REG (EXTRACT_OPERAND (FT, *insn1), MIPS_FP_REG)) |
2585 | return 1; | |
252b5132 | 2586 | } |
71400594 | 2587 | else if (pinfo1 & INSN_WRITE_FPR_S) |
252b5132 | 2588 | { |
71400594 RS |
2589 | if (INSN2_USES_REG (EXTRACT_OPERAND (FS, *insn1), MIPS_FP_REG)) |
2590 | return 1; | |
252b5132 RH |
2591 | } |
2592 | else | |
2593 | { | |
71400594 RS |
2594 | /* Read-after-write dependencies on the control registers |
2595 | require a two-instruction gap. */ | |
2596 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
2597 | && (pinfo2 & INSN_READ_COND_CODE)) | |
2598 | return 2; | |
2599 | ||
2600 | /* We don't know exactly what INSN1 does. If INSN2 is | |
2601 | also a coprocessor instruction, assume there must be | |
2602 | a one instruction gap. */ | |
2603 | if (pinfo2 & INSN_COP) | |
2604 | return 1; | |
252b5132 RH |
2605 | } |
2606 | } | |
6b76fefe | 2607 | |
71400594 RS |
2608 | /* Check for read-after-write dependencies on the coprocessor |
2609 | control registers in cases where INSN1 does not need a general | |
2610 | coprocessor delay. This means that INSN1 is a floating point | |
2611 | comparison instruction. */ | |
2612 | /* Itbl support may require additional care here. */ | |
2613 | else if (!cop_interlocks | |
2614 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
2615 | && (pinfo2 & INSN_READ_COND_CODE)) | |
2616 | return 1; | |
2617 | } | |
6b76fefe | 2618 | |
71400594 | 2619 | #undef INSN2_USES_REG |
6b76fefe | 2620 | |
71400594 RS |
2621 | return 0; |
2622 | } | |
6b76fefe | 2623 | |
7d8e00cf RS |
2624 | /* Return the number of nops that would be needed to work around the |
2625 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
91d6fa6a | 2626 | the MAX_VR4130_NOPS instructions described by HIST. */ |
7d8e00cf RS |
2627 | |
2628 | static int | |
91d6fa6a | 2629 | nops_for_vr4130 (const struct mips_cl_insn *hist, |
7d8e00cf RS |
2630 | const struct mips_cl_insn *insn) |
2631 | { | |
2632 | int i, j, reg; | |
2633 | ||
2634 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
2635 | are not affected by the errata. */ | |
2636 | if (insn != 0 | |
2637 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
2638 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
2639 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
2640 | return 0; | |
2641 | ||
2642 | /* Search for the first MFLO or MFHI. */ | |
2643 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
91d6fa6a | 2644 | if (MF_HILO_INSN (hist[i].insn_mo->pinfo)) |
7d8e00cf RS |
2645 | { |
2646 | /* Extract the destination register. */ | |
2647 | if (mips_opts.mips16) | |
91d6fa6a | 2648 | reg = mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, hist[i])]; |
7d8e00cf | 2649 | else |
91d6fa6a | 2650 | reg = EXTRACT_OPERAND (RD, hist[i]); |
7d8e00cf RS |
2651 | |
2652 | /* No nops are needed if INSN reads that register. */ | |
2653 | if (insn != NULL && insn_uses_reg (insn, reg, MIPS_GR_REG)) | |
2654 | return 0; | |
2655 | ||
2656 | /* ...or if any of the intervening instructions do. */ | |
2657 | for (j = 0; j < i; j++) | |
91d6fa6a | 2658 | if (insn_uses_reg (&hist[j], reg, MIPS_GR_REG)) |
7d8e00cf RS |
2659 | return 0; |
2660 | ||
2661 | return MAX_VR4130_NOPS - i; | |
2662 | } | |
2663 | return 0; | |
2664 | } | |
2665 | ||
71400594 | 2666 | /* Return the number of nops that would be needed if instruction INSN |
91d6fa6a NC |
2667 | immediately followed the MAX_NOPS instructions given by HIST, |
2668 | where HIST[0] is the most recent instruction. If INSN is null, | |
71400594 | 2669 | return the worse-case number of nops for any instruction. */ |
bdaaa2e1 | 2670 | |
71400594 | 2671 | static int |
91d6fa6a | 2672 | nops_for_insn (const struct mips_cl_insn *hist, |
71400594 RS |
2673 | const struct mips_cl_insn *insn) |
2674 | { | |
2675 | int i, nops, tmp_nops; | |
bdaaa2e1 | 2676 | |
71400594 | 2677 | nops = 0; |
7d8e00cf | 2678 | for (i = 0; i < MAX_DELAY_NOPS; i++) |
65b02341 | 2679 | { |
91d6fa6a | 2680 | tmp_nops = insns_between (hist + i, insn) - i; |
65b02341 RS |
2681 | if (tmp_nops > nops) |
2682 | nops = tmp_nops; | |
2683 | } | |
7d8e00cf RS |
2684 | |
2685 | if (mips_fix_vr4130) | |
2686 | { | |
91d6fa6a | 2687 | tmp_nops = nops_for_vr4130 (hist, insn); |
7d8e00cf RS |
2688 | if (tmp_nops > nops) |
2689 | nops = tmp_nops; | |
2690 | } | |
2691 | ||
71400594 RS |
2692 | return nops; |
2693 | } | |
252b5132 | 2694 | |
71400594 | 2695 | /* The variable arguments provide NUM_INSNS extra instructions that |
91d6fa6a | 2696 | might be added to HIST. Return the largest number of nops that |
71400594 | 2697 | would be needed after the extended sequence. */ |
252b5132 | 2698 | |
71400594 | 2699 | static int |
91d6fa6a | 2700 | nops_for_sequence (int num_insns, const struct mips_cl_insn *hist, ...) |
71400594 RS |
2701 | { |
2702 | va_list args; | |
2703 | struct mips_cl_insn buffer[MAX_NOPS]; | |
2704 | struct mips_cl_insn *cursor; | |
2705 | int nops; | |
2706 | ||
91d6fa6a | 2707 | va_start (args, hist); |
71400594 | 2708 | cursor = buffer + num_insns; |
91d6fa6a | 2709 | memcpy (cursor, hist, (MAX_NOPS - num_insns) * sizeof (*cursor)); |
71400594 RS |
2710 | while (cursor > buffer) |
2711 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
2712 | ||
2713 | nops = nops_for_insn (buffer, NULL); | |
2714 | va_end (args); | |
2715 | return nops; | |
2716 | } | |
252b5132 | 2717 | |
71400594 RS |
2718 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
2719 | worst-case delay for the branch target. */ | |
252b5132 | 2720 | |
71400594 | 2721 | static int |
91d6fa6a | 2722 | nops_for_insn_or_target (const struct mips_cl_insn *hist, |
71400594 RS |
2723 | const struct mips_cl_insn *insn) |
2724 | { | |
2725 | int nops, tmp_nops; | |
60b63b72 | 2726 | |
91d6fa6a | 2727 | nops = nops_for_insn (hist, insn); |
71400594 RS |
2728 | if (insn->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY |
2729 | | INSN_COND_BRANCH_DELAY | |
2730 | | INSN_COND_BRANCH_LIKELY)) | |
2731 | { | |
91d6fa6a | 2732 | tmp_nops = nops_for_sequence (2, hist, insn, NOP_INSN); |
71400594 RS |
2733 | if (tmp_nops > nops) |
2734 | nops = tmp_nops; | |
2735 | } | |
9a2c7088 MR |
2736 | else if (mips_opts.mips16 |
2737 | && (insn->insn_mo->pinfo & (MIPS16_INSN_UNCOND_BRANCH | |
2738 | | MIPS16_INSN_COND_BRANCH))) | |
71400594 | 2739 | { |
91d6fa6a | 2740 | tmp_nops = nops_for_sequence (1, hist, insn); |
71400594 RS |
2741 | if (tmp_nops > nops) |
2742 | nops = tmp_nops; | |
2743 | } | |
2744 | return nops; | |
2745 | } | |
2746 | ||
c67a084a NC |
2747 | /* Fix NOP issue: Replace nops by "or at,at,zero". */ |
2748 | ||
2749 | static void | |
2750 | fix_loongson2f_nop (struct mips_cl_insn * ip) | |
2751 | { | |
2752 | if (strcmp (ip->insn_mo->name, "nop") == 0) | |
2753 | ip->insn_opcode = LOONGSON2F_NOP_INSN; | |
2754 | } | |
2755 | ||
2756 | /* Fix Jump Issue: Eliminate instruction fetch from outside 256M region | |
2757 | jr target pc &= 'hffff_ffff_cfff_ffff. */ | |
2758 | ||
2759 | static void | |
2760 | fix_loongson2f_jump (struct mips_cl_insn * ip) | |
2761 | { | |
2762 | if (strcmp (ip->insn_mo->name, "j") == 0 | |
2763 | || strcmp (ip->insn_mo->name, "jr") == 0 | |
2764 | || strcmp (ip->insn_mo->name, "jalr") == 0) | |
2765 | { | |
2766 | int sreg; | |
2767 | expressionS ep; | |
2768 | ||
2769 | if (! mips_opts.at) | |
2770 | return; | |
2771 | ||
2772 | sreg = EXTRACT_OPERAND (RS, *ip); | |
2773 | if (sreg == ZERO || sreg == KT0 || sreg == KT1 || sreg == ATREG) | |
2774 | return; | |
2775 | ||
2776 | ep.X_op = O_constant; | |
2777 | ep.X_add_number = 0xcfff0000; | |
2778 | macro_build (&ep, "lui", "t,u", ATREG, BFD_RELOC_HI16); | |
2779 | ep.X_add_number = 0xffff; | |
2780 | macro_build (&ep, "ori", "t,r,i", ATREG, ATREG, BFD_RELOC_LO16); | |
2781 | macro_build (NULL, "and", "d,v,t", sreg, sreg, ATREG); | |
2782 | } | |
2783 | } | |
2784 | ||
2785 | static void | |
2786 | fix_loongson2f (struct mips_cl_insn * ip) | |
2787 | { | |
2788 | if (mips_fix_loongson2f_nop) | |
2789 | fix_loongson2f_nop (ip); | |
2790 | ||
2791 | if (mips_fix_loongson2f_jump) | |
2792 | fix_loongson2f_jump (ip); | |
2793 | } | |
2794 | ||
71400594 RS |
2795 | /* Output an instruction. IP is the instruction information. |
2796 | ADDRESS_EXPR is an operand of the instruction to be used with | |
2797 | RELOC_TYPE. */ | |
2798 | ||
2799 | static void | |
2800 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
2801 | bfd_reloc_code_real_type *reloc_type) | |
2802 | { | |
3994f87e | 2803 | unsigned long prev_pinfo, pinfo; |
71400594 RS |
2804 | relax_stateT prev_insn_frag_type = 0; |
2805 | bfd_boolean relaxed_branch = FALSE; | |
a8dbcb85 | 2806 | segment_info_type *si = seg_info (now_seg); |
71400594 | 2807 | |
c67a084a NC |
2808 | if (mips_fix_loongson2f) |
2809 | fix_loongson2f (ip); | |
2810 | ||
71400594 RS |
2811 | /* Mark instruction labels in mips16 mode. */ |
2812 | mips16_mark_labels (); | |
2813 | ||
2814 | prev_pinfo = history[0].insn_mo->pinfo; | |
2815 | pinfo = ip->insn_mo->pinfo; | |
2816 | ||
2817 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) | |
2818 | { | |
2819 | /* There are a lot of optimizations we could do that we don't. | |
2820 | In particular, we do not, in general, reorder instructions. | |
2821 | If you use gcc with optimization, it will reorder | |
2822 | instructions and generally do much more optimization then we | |
2823 | do here; repeating all that work in the assembler would only | |
2824 | benefit hand written assembly code, and does not seem worth | |
2825 | it. */ | |
2826 | int nops = (mips_optimize == 0 | |
2827 | ? nops_for_insn (history, NULL) | |
2828 | : nops_for_insn_or_target (history, ip)); | |
2829 | if (nops > 0) | |
252b5132 RH |
2830 | { |
2831 | fragS *old_frag; | |
2832 | unsigned long old_frag_offset; | |
2833 | int i; | |
252b5132 RH |
2834 | |
2835 | old_frag = frag_now; | |
2836 | old_frag_offset = frag_now_fix (); | |
2837 | ||
2838 | for (i = 0; i < nops; i++) | |
2839 | emit_nop (); | |
2840 | ||
2841 | if (listing) | |
2842 | { | |
2843 | listing_prev_line (); | |
2844 | /* We may be at the start of a variant frag. In case we | |
2845 | are, make sure there is enough space for the frag | |
2846 | after the frags created by listing_prev_line. The | |
2847 | argument to frag_grow here must be at least as large | |
2848 | as the argument to all other calls to frag_grow in | |
2849 | this file. We don't have to worry about being in the | |
2850 | middle of a variant frag, because the variants insert | |
2851 | all needed nop instructions themselves. */ | |
2852 | frag_grow (40); | |
2853 | } | |
2854 | ||
404a8071 | 2855 | mips_move_labels (); |
252b5132 RH |
2856 | |
2857 | #ifndef NO_ECOFF_DEBUGGING | |
2858 | if (ECOFF_DEBUGGING) | |
2859 | ecoff_fix_loc (old_frag, old_frag_offset); | |
2860 | #endif | |
2861 | } | |
71400594 RS |
2862 | } |
2863 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
2864 | { | |
2865 | /* Work out how many nops in prev_nop_frag are needed by IP. */ | |
2866 | int nops = nops_for_insn_or_target (history, ip); | |
9c2799c2 | 2867 | gas_assert (nops <= prev_nop_frag_holds); |
252b5132 | 2868 | |
71400594 RS |
2869 | /* Enforce NOPS as a minimum. */ |
2870 | if (nops > prev_nop_frag_required) | |
2871 | prev_nop_frag_required = nops; | |
252b5132 | 2872 | |
71400594 RS |
2873 | if (prev_nop_frag_holds == prev_nop_frag_required) |
2874 | { | |
2875 | /* Settle for the current number of nops. Update the history | |
2876 | accordingly (for the benefit of any future .set reorder code). */ | |
2877 | prev_nop_frag = NULL; | |
2878 | insert_into_history (prev_nop_frag_since, | |
2879 | prev_nop_frag_holds, NOP_INSN); | |
2880 | } | |
2881 | else | |
2882 | { | |
2883 | /* Allow this instruction to replace one of the nops that was | |
2884 | tentatively added to prev_nop_frag. */ | |
2885 | prev_nop_frag->fr_fix -= mips_opts.mips16 ? 2 : 4; | |
2886 | prev_nop_frag_holds--; | |
2887 | prev_nop_frag_since++; | |
252b5132 RH |
2888 | } |
2889 | } | |
2890 | ||
58e2ea4d MR |
2891 | #ifdef OBJ_ELF |
2892 | /* The value passed to dwarf2_emit_insn is the distance between | |
2893 | the beginning of the current instruction and the address that | |
2894 | should be recorded in the debug tables. For MIPS16 debug info | |
2895 | we want to use ISA-encoded addresses, so we pass -1 for an | |
2896 | address higher by one than the current. */ | |
2897 | dwarf2_emit_insn (mips_opts.mips16 ? -1 : 0); | |
2898 | #endif | |
2899 | ||
895921c9 | 2900 | /* Record the frag type before frag_var. */ |
47e39b9d RS |
2901 | if (history[0].frag) |
2902 | prev_insn_frag_type = history[0].frag->fr_type; | |
895921c9 | 2903 | |
4d7206a2 | 2904 | if (address_expr |
0b25d3e6 | 2905 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
4a6a3df4 AO |
2906 | && (pinfo & INSN_UNCOND_BRANCH_DELAY || pinfo & INSN_COND_BRANCH_DELAY |
2907 | || pinfo & INSN_COND_BRANCH_LIKELY) | |
2908 | && mips_relax_branch | |
2909 | /* Don't try branch relaxation within .set nomacro, or within | |
2910 | .set noat if we use $at for PIC computations. If it turns | |
2911 | out that the branch was out-of-range, we'll get an error. */ | |
2912 | && !mips_opts.warn_about_macros | |
741fe287 | 2913 | && (mips_opts.at || mips_pic == NO_PIC) |
4a6a3df4 AO |
2914 | && !mips_opts.mips16) |
2915 | { | |
895921c9 | 2916 | relaxed_branch = TRUE; |
1e915849 RS |
2917 | add_relaxed_insn (ip, (relaxed_branch_length |
2918 | (NULL, NULL, | |
2919 | (pinfo & INSN_UNCOND_BRANCH_DELAY) ? -1 | |
2920 | : (pinfo & INSN_COND_BRANCH_LIKELY) ? 1 | |
2921 | : 0)), 4, | |
2922 | RELAX_BRANCH_ENCODE | |
2923 | (pinfo & INSN_UNCOND_BRANCH_DELAY, | |
2924 | pinfo & INSN_COND_BRANCH_LIKELY, | |
2925 | pinfo & INSN_WRITE_GPR_31, | |
2926 | 0), | |
2927 | address_expr->X_add_symbol, | |
2928 | address_expr->X_add_number); | |
4a6a3df4 AO |
2929 | *reloc_type = BFD_RELOC_UNUSED; |
2930 | } | |
2931 | else if (*reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
2932 | { |
2933 | /* We need to set up a variant frag. */ | |
9c2799c2 | 2934 | gas_assert (mips_opts.mips16 && address_expr != NULL); |
1e915849 RS |
2935 | add_relaxed_insn (ip, 4, 0, |
2936 | RELAX_MIPS16_ENCODE | |
2937 | (*reloc_type - BFD_RELOC_UNUSED, | |
2938 | mips16_small, mips16_ext, | |
2939 | prev_pinfo & INSN_UNCOND_BRANCH_DELAY, | |
2940 | history[0].mips16_absolute_jump_p), | |
2941 | make_expr_symbol (address_expr), 0); | |
252b5132 | 2942 | } |
252b5132 RH |
2943 | else if (mips_opts.mips16 |
2944 | && ! ip->use_extend | |
f6688943 | 2945 | && *reloc_type != BFD_RELOC_MIPS16_JMP) |
9497f5ac | 2946 | { |
b8ee1a6e DU |
2947 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) == 0) |
2948 | /* Make sure there is enough room to swap this instruction with | |
2949 | a following jump instruction. */ | |
2950 | frag_grow (6); | |
1e915849 | 2951 | add_fixed_insn (ip); |
252b5132 RH |
2952 | } |
2953 | else | |
2954 | { | |
2955 | if (mips_opts.mips16 | |
2956 | && mips_opts.noreorder | |
2957 | && (prev_pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) | |
2958 | as_warn (_("extended instruction in delay slot")); | |
2959 | ||
4d7206a2 RS |
2960 | if (mips_relax.sequence) |
2961 | { | |
2962 | /* If we've reached the end of this frag, turn it into a variant | |
2963 | frag and record the information for the instructions we've | |
2964 | written so far. */ | |
2965 | if (frag_room () < 4) | |
2966 | relax_close_frag (); | |
2967 | mips_relax.sizes[mips_relax.sequence - 1] += 4; | |
2968 | } | |
2969 | ||
584892a6 RS |
2970 | if (mips_relax.sequence != 2) |
2971 | mips_macro_warning.sizes[0] += 4; | |
2972 | if (mips_relax.sequence != 1) | |
2973 | mips_macro_warning.sizes[1] += 4; | |
2974 | ||
1e915849 RS |
2975 | if (mips_opts.mips16) |
2976 | { | |
2977 | ip->fixed_p = 1; | |
2978 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
2979 | } | |
2980 | add_fixed_insn (ip); | |
252b5132 RH |
2981 | } |
2982 | ||
01a3f561 | 2983 | if (address_expr != NULL && *reloc_type <= BFD_RELOC_UNUSED) |
252b5132 RH |
2984 | { |
2985 | if (address_expr->X_op == O_constant) | |
2986 | { | |
f17c130b | 2987 | unsigned int tmp; |
f6688943 TS |
2988 | |
2989 | switch (*reloc_type) | |
252b5132 RH |
2990 | { |
2991 | case BFD_RELOC_32: | |
2992 | ip->insn_opcode |= address_expr->X_add_number; | |
2993 | break; | |
2994 | ||
f6688943 | 2995 | case BFD_RELOC_MIPS_HIGHEST: |
f17c130b AM |
2996 | tmp = (address_expr->X_add_number + 0x800080008000ull) >> 48; |
2997 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
2998 | break; |
2999 | ||
3000 | case BFD_RELOC_MIPS_HIGHER: | |
f17c130b AM |
3001 | tmp = (address_expr->X_add_number + 0x80008000ull) >> 32; |
3002 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
3003 | break; |
3004 | ||
3005 | case BFD_RELOC_HI16_S: | |
f17c130b AM |
3006 | tmp = (address_expr->X_add_number + 0x8000) >> 16; |
3007 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
3008 | break; |
3009 | ||
3010 | case BFD_RELOC_HI16: | |
3011 | ip->insn_opcode |= (address_expr->X_add_number >> 16) & 0xffff; | |
3012 | break; | |
3013 | ||
01a3f561 | 3014 | case BFD_RELOC_UNUSED: |
252b5132 | 3015 | case BFD_RELOC_LO16: |
ed6fb7bd | 3016 | case BFD_RELOC_MIPS_GOT_DISP: |
252b5132 RH |
3017 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; |
3018 | break; | |
3019 | ||
3020 | case BFD_RELOC_MIPS_JMP: | |
3021 | if ((address_expr->X_add_number & 3) != 0) | |
3022 | as_bad (_("jump to misaligned address (0x%lx)"), | |
3023 | (unsigned long) address_expr->X_add_number); | |
3024 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0x3ffffff; | |
3025 | break; | |
3026 | ||
3027 | case BFD_RELOC_MIPS16_JMP: | |
3028 | if ((address_expr->X_add_number & 3) != 0) | |
3029 | as_bad (_("jump to misaligned address (0x%lx)"), | |
3030 | (unsigned long) address_expr->X_add_number); | |
3031 | ip->insn_opcode |= | |
3032 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
3033 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
3034 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
3035 | break; | |
3036 | ||
252b5132 | 3037 | case BFD_RELOC_16_PCREL_S2: |
bad36eac DJ |
3038 | if ((address_expr->X_add_number & 3) != 0) |
3039 | as_bad (_("branch to misaligned address (0x%lx)"), | |
3040 | (unsigned long) address_expr->X_add_number); | |
3041 | if (mips_relax_branch) | |
3042 | goto need_reloc; | |
3043 | if ((address_expr->X_add_number + 0x20000) & ~0x3ffff) | |
3044 | as_bad (_("branch address range overflow (0x%lx)"), | |
3045 | (unsigned long) address_expr->X_add_number); | |
3046 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0xffff; | |
3047 | break; | |
252b5132 RH |
3048 | |
3049 | default: | |
3050 | internalError (); | |
3051 | } | |
3052 | } | |
01a3f561 | 3053 | else if (*reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 3054 | need_reloc: |
4d7206a2 RS |
3055 | { |
3056 | reloc_howto_type *howto; | |
3057 | int i; | |
34ce925e | 3058 | |
4d7206a2 RS |
3059 | /* In a compound relocation, it is the final (outermost) |
3060 | operator that determines the relocated field. */ | |
3061 | for (i = 1; i < 3; i++) | |
3062 | if (reloc_type[i] == BFD_RELOC_UNUSED) | |
3063 | break; | |
34ce925e | 3064 | |
4d7206a2 | 3065 | howto = bfd_reloc_type_lookup (stdoutput, reloc_type[i - 1]); |
23fce1e3 NC |
3066 | if (howto == NULL) |
3067 | { | |
3068 | /* To reproduce this failure try assembling gas/testsuites/ | |
3069 | gas/mips/mips16-intermix.s with a mips-ecoff targeted | |
3070 | assembler. */ | |
3071 | as_bad (_("Unsupported MIPS relocation number %d"), reloc_type[i - 1]); | |
3072 | howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_16); | |
3073 | } | |
3074 | ||
1e915849 RS |
3075 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
3076 | bfd_get_reloc_size (howto), | |
3077 | address_expr, | |
3078 | reloc_type[0] == BFD_RELOC_16_PCREL_S2, | |
3079 | reloc_type[0]); | |
4d7206a2 | 3080 | |
b314ec0e RS |
3081 | /* Tag symbols that have a R_MIPS16_26 relocation against them. */ |
3082 | if (reloc_type[0] == BFD_RELOC_MIPS16_JMP | |
3083 | && ip->fixp[0]->fx_addsy) | |
3084 | *symbol_get_tc (ip->fixp[0]->fx_addsy) = 1; | |
3085 | ||
4d7206a2 RS |
3086 | /* These relocations can have an addend that won't fit in |
3087 | 4 octets for 64bit assembly. */ | |
3088 | if (HAVE_64BIT_GPRS | |
3089 | && ! howto->partial_inplace | |
3090 | && (reloc_type[0] == BFD_RELOC_16 | |
3091 | || reloc_type[0] == BFD_RELOC_32 | |
3092 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
4d7206a2 RS |
3093 | || reloc_type[0] == BFD_RELOC_GPREL16 |
3094 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
3095 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
3096 | || reloc_type[0] == BFD_RELOC_64 | |
3097 | || reloc_type[0] == BFD_RELOC_CTOR | |
3098 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
3099 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
3100 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
3101 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
3102 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
d6f16593 MR |
3103 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT |
3104 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
738e5348 RS |
3105 | || hi16_reloc_p (reloc_type[0]) |
3106 | || lo16_reloc_p (reloc_type[0]))) | |
1e915849 | 3107 | ip->fixp[0]->fx_no_overflow = 1; |
4d7206a2 RS |
3108 | |
3109 | if (mips_relax.sequence) | |
3110 | { | |
3111 | if (mips_relax.first_fixup == 0) | |
1e915849 | 3112 | mips_relax.first_fixup = ip->fixp[0]; |
4d7206a2 RS |
3113 | } |
3114 | else if (reloc_needs_lo_p (*reloc_type)) | |
3115 | { | |
3116 | struct mips_hi_fixup *hi_fixup; | |
252b5132 | 3117 | |
4d7206a2 RS |
3118 | /* Reuse the last entry if it already has a matching %lo. */ |
3119 | hi_fixup = mips_hi_fixup_list; | |
3120 | if (hi_fixup == 0 | |
3121 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
3122 | { | |
3123 | hi_fixup = ((struct mips_hi_fixup *) | |
3124 | xmalloc (sizeof (struct mips_hi_fixup))); | |
3125 | hi_fixup->next = mips_hi_fixup_list; | |
3126 | mips_hi_fixup_list = hi_fixup; | |
252b5132 | 3127 | } |
1e915849 | 3128 | hi_fixup->fixp = ip->fixp[0]; |
4d7206a2 RS |
3129 | hi_fixup->seg = now_seg; |
3130 | } | |
f6688943 | 3131 | |
4d7206a2 RS |
3132 | /* Add fixups for the second and third relocations, if given. |
3133 | Note that the ABI allows the second relocation to be | |
3134 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
3135 | moment we only use RSS_UNDEF, but we could add support | |
3136 | for the others if it ever becomes necessary. */ | |
3137 | for (i = 1; i < 3; i++) | |
3138 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
3139 | { | |
1e915849 RS |
3140 | ip->fixp[i] = fix_new (ip->frag, ip->where, |
3141 | ip->fixp[0]->fx_size, NULL, 0, | |
3142 | FALSE, reloc_type[i]); | |
b1dca8ee RS |
3143 | |
3144 | /* Use fx_tcbit to mark compound relocs. */ | |
1e915849 RS |
3145 | ip->fixp[0]->fx_tcbit = 1; |
3146 | ip->fixp[i]->fx_tcbit = 1; | |
4d7206a2 | 3147 | } |
252b5132 RH |
3148 | } |
3149 | } | |
1e915849 | 3150 | install_insn (ip); |
252b5132 RH |
3151 | |
3152 | /* Update the register mask information. */ | |
3153 | if (! mips_opts.mips16) | |
3154 | { | |
3155 | if (pinfo & INSN_WRITE_GPR_D) | |
bf12938e | 3156 | mips_gprmask |= 1 << EXTRACT_OPERAND (RD, *ip); |
252b5132 | 3157 | if ((pinfo & (INSN_WRITE_GPR_T | INSN_READ_GPR_T)) != 0) |
bf12938e | 3158 | mips_gprmask |= 1 << EXTRACT_OPERAND (RT, *ip); |
252b5132 | 3159 | if (pinfo & INSN_READ_GPR_S) |
bf12938e | 3160 | mips_gprmask |= 1 << EXTRACT_OPERAND (RS, *ip); |
252b5132 | 3161 | if (pinfo & INSN_WRITE_GPR_31) |
f9419b05 | 3162 | mips_gprmask |= 1 << RA; |
252b5132 | 3163 | if (pinfo & INSN_WRITE_FPR_D) |
bf12938e | 3164 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FD, *ip); |
252b5132 | 3165 | if ((pinfo & (INSN_WRITE_FPR_S | INSN_READ_FPR_S)) != 0) |
bf12938e | 3166 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FS, *ip); |
252b5132 | 3167 | if ((pinfo & (INSN_WRITE_FPR_T | INSN_READ_FPR_T)) != 0) |
bf12938e | 3168 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FT, *ip); |
252b5132 | 3169 | if ((pinfo & INSN_READ_FPR_R) != 0) |
bf12938e | 3170 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FR, *ip); |
252b5132 RH |
3171 | if (pinfo & INSN_COP) |
3172 | { | |
bdaaa2e1 KH |
3173 | /* We don't keep enough information to sort these cases out. |
3174 | The itbl support does keep this information however, although | |
3175 | we currently don't support itbl fprmats as part of the cop | |
3176 | instruction. May want to add this support in the future. */ | |
252b5132 RH |
3177 | } |
3178 | /* Never set the bit for $0, which is always zero. */ | |
beae10d5 | 3179 | mips_gprmask &= ~1 << 0; |
252b5132 RH |
3180 | } |
3181 | else | |
3182 | { | |
3183 | if (pinfo & (MIPS16_INSN_WRITE_X | MIPS16_INSN_READ_X)) | |
bf12938e | 3184 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RX, *ip); |
252b5132 | 3185 | if (pinfo & (MIPS16_INSN_WRITE_Y | MIPS16_INSN_READ_Y)) |
bf12938e | 3186 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RY, *ip); |
252b5132 | 3187 | if (pinfo & MIPS16_INSN_WRITE_Z) |
bf12938e | 3188 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RZ, *ip); |
252b5132 RH |
3189 | if (pinfo & (MIPS16_INSN_WRITE_T | MIPS16_INSN_READ_T)) |
3190 | mips_gprmask |= 1 << TREG; | |
3191 | if (pinfo & (MIPS16_INSN_WRITE_SP | MIPS16_INSN_READ_SP)) | |
3192 | mips_gprmask |= 1 << SP; | |
3193 | if (pinfo & (MIPS16_INSN_WRITE_31 | MIPS16_INSN_READ_31)) | |
3194 | mips_gprmask |= 1 << RA; | |
3195 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
3196 | mips_gprmask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
3197 | if (pinfo & MIPS16_INSN_READ_Z) | |
bf12938e | 3198 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip); |
252b5132 | 3199 | if (pinfo & MIPS16_INSN_READ_GPR_X) |
bf12938e | 3200 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (REGR32, *ip); |
252b5132 RH |
3201 | } |
3202 | ||
4d7206a2 | 3203 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
252b5132 RH |
3204 | { |
3205 | /* Filling the branch delay slot is more complex. We try to | |
3206 | switch the branch with the previous instruction, which we can | |
3207 | do if the previous instruction does not set up a condition | |
3208 | that the branch tests and if the branch is not itself the | |
3209 | target of any branch. */ | |
3210 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) | |
3211 | || (pinfo & INSN_COND_BRANCH_DELAY)) | |
3212 | { | |
3213 | if (mips_optimize < 2 | |
3214 | /* If we have seen .set volatile or .set nomove, don't | |
3215 | optimize. */ | |
3216 | || mips_opts.nomove != 0 | |
a38419a5 RS |
3217 | /* We can't swap if the previous instruction's position |
3218 | is fixed. */ | |
3219 | || history[0].fixed_p | |
252b5132 RH |
3220 | /* If the previous previous insn was in a .set |
3221 | noreorder, we can't swap. Actually, the MIPS | |
3222 | assembler will swap in this situation. However, gcc | |
3223 | configured -with-gnu-as will generate code like | |
3224 | .set noreorder | |
3225 | lw $4,XXX | |
3226 | .set reorder | |
3227 | INSN | |
3228 | bne $4,$0,foo | |
3229 | in which we can not swap the bne and INSN. If gcc is | |
3230 | not configured -with-gnu-as, it does not output the | |
a38419a5 | 3231 | .set pseudo-ops. */ |
47e39b9d | 3232 | || history[1].noreorder_p |
252b5132 RH |
3233 | /* If the branch is itself the target of a branch, we |
3234 | can not swap. We cheat on this; all we check for is | |
3235 | whether there is a label on this instruction. If | |
3236 | there are any branches to anything other than a | |
3237 | label, users must use .set noreorder. */ | |
a8dbcb85 | 3238 | || si->label_list != NULL |
895921c9 MR |
3239 | /* If the previous instruction is in a variant frag |
3240 | other than this branch's one, we cannot do the swap. | |
3241 | This does not apply to the mips16, which uses variant | |
3242 | frags for different purposes. */ | |
252b5132 | 3243 | || (! mips_opts.mips16 |
895921c9 | 3244 | && prev_insn_frag_type == rs_machine_dependent) |
71400594 RS |
3245 | /* Check for conflicts between the branch and the instructions |
3246 | before the candidate delay slot. */ | |
3247 | || nops_for_insn (history + 1, ip) > 0 | |
3248 | /* Check for conflicts between the swapped sequence and the | |
3249 | target of the branch. */ | |
3250 | || nops_for_sequence (2, history + 1, ip, history) > 0 | |
252b5132 RH |
3251 | /* We do not swap with a trap instruction, since it |
3252 | complicates trap handlers to have the trap | |
3253 | instruction be in a delay slot. */ | |
3254 | || (prev_pinfo & INSN_TRAP) | |
3255 | /* If the branch reads a register that the previous | |
3256 | instruction sets, we can not swap. */ | |
3257 | || (! mips_opts.mips16 | |
3258 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
bf12938e | 3259 | && insn_uses_reg (ip, EXTRACT_OPERAND (RT, history[0]), |
252b5132 RH |
3260 | MIPS_GR_REG)) |
3261 | || (! mips_opts.mips16 | |
3262 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
bf12938e | 3263 | && insn_uses_reg (ip, EXTRACT_OPERAND (RD, history[0]), |
252b5132 RH |
3264 | MIPS_GR_REG)) |
3265 | || (mips_opts.mips16 | |
3266 | && (((prev_pinfo & MIPS16_INSN_WRITE_X) | |
bf12938e RS |
3267 | && (insn_uses_reg |
3268 | (ip, MIPS16_EXTRACT_OPERAND (RX, history[0]), | |
3269 | MIPS16_REG))) | |
252b5132 | 3270 | || ((prev_pinfo & MIPS16_INSN_WRITE_Y) |
bf12938e RS |
3271 | && (insn_uses_reg |
3272 | (ip, MIPS16_EXTRACT_OPERAND (RY, history[0]), | |
3273 | MIPS16_REG))) | |
252b5132 | 3274 | || ((prev_pinfo & MIPS16_INSN_WRITE_Z) |
bf12938e RS |
3275 | && (insn_uses_reg |
3276 | (ip, MIPS16_EXTRACT_OPERAND (RZ, history[0]), | |
3277 | MIPS16_REG))) | |
252b5132 RH |
3278 | || ((prev_pinfo & MIPS16_INSN_WRITE_T) |
3279 | && insn_uses_reg (ip, TREG, MIPS_GR_REG)) | |
3280 | || ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
3281 | && insn_uses_reg (ip, RA, MIPS_GR_REG)) | |
3282 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
3283 | && insn_uses_reg (ip, | |
47e39b9d RS |
3284 | MIPS16OP_EXTRACT_REG32R |
3285 | (history[0].insn_opcode), | |
252b5132 RH |
3286 | MIPS_GR_REG)))) |
3287 | /* If the branch writes a register that the previous | |
3288 | instruction sets, we can not swap (we know that | |
3289 | branches write only to RD or to $31). */ | |
3290 | || (! mips_opts.mips16 | |
3291 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
3292 | && (((pinfo & INSN_WRITE_GPR_D) | |
bf12938e RS |
3293 | && (EXTRACT_OPERAND (RT, history[0]) |
3294 | == EXTRACT_OPERAND (RD, *ip))) | |
252b5132 | 3295 | || ((pinfo & INSN_WRITE_GPR_31) |
bf12938e | 3296 | && EXTRACT_OPERAND (RT, history[0]) == RA))) |
252b5132 RH |
3297 | || (! mips_opts.mips16 |
3298 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
3299 | && (((pinfo & INSN_WRITE_GPR_D) | |
bf12938e RS |
3300 | && (EXTRACT_OPERAND (RD, history[0]) |
3301 | == EXTRACT_OPERAND (RD, *ip))) | |
252b5132 | 3302 | || ((pinfo & INSN_WRITE_GPR_31) |
bf12938e | 3303 | && EXTRACT_OPERAND (RD, history[0]) == RA))) |
252b5132 RH |
3304 | || (mips_opts.mips16 |
3305 | && (pinfo & MIPS16_INSN_WRITE_31) | |
3306 | && ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
3307 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
47e39b9d | 3308 | && (MIPS16OP_EXTRACT_REG32R (history[0].insn_opcode) |
252b5132 RH |
3309 | == RA)))) |
3310 | /* If the branch writes a register that the previous | |
3311 | instruction reads, we can not swap (we know that | |
3312 | branches only write to RD or to $31). */ | |
3313 | || (! mips_opts.mips16 | |
3314 | && (pinfo & INSN_WRITE_GPR_D) | |
47e39b9d | 3315 | && insn_uses_reg (&history[0], |
bf12938e | 3316 | EXTRACT_OPERAND (RD, *ip), |
252b5132 RH |
3317 | MIPS_GR_REG)) |
3318 | || (! mips_opts.mips16 | |
3319 | && (pinfo & INSN_WRITE_GPR_31) | |
47e39b9d | 3320 | && insn_uses_reg (&history[0], RA, MIPS_GR_REG)) |
252b5132 RH |
3321 | || (mips_opts.mips16 |
3322 | && (pinfo & MIPS16_INSN_WRITE_31) | |
47e39b9d | 3323 | && insn_uses_reg (&history[0], RA, MIPS_GR_REG)) |
252b5132 RH |
3324 | /* If one instruction sets a condition code and the |
3325 | other one uses a condition code, we can not swap. */ | |
3326 | || ((pinfo & INSN_READ_COND_CODE) | |
3327 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
3328 | || ((pinfo & INSN_WRITE_COND_CODE) | |
3329 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
3330 | /* If the previous instruction uses the PC, we can not | |
3331 | swap. */ | |
3332 | || (mips_opts.mips16 | |
3333 | && (prev_pinfo & MIPS16_INSN_READ_PC)) | |
252b5132 RH |
3334 | /* If the previous instruction had a fixup in mips16 |
3335 | mode, we can not swap. This normally means that the | |
3336 | previous instruction was a 4 byte branch anyhow. */ | |
47e39b9d | 3337 | || (mips_opts.mips16 && history[0].fixp[0]) |
bdaaa2e1 KH |
3338 | /* If the previous instruction is a sync, sync.l, or |
3339 | sync.p, we can not swap. */ | |
6a32d874 CM |
3340 | || (prev_pinfo & INSN_SYNC) |
3341 | /* If the previous instruction is an ERET or | |
3342 | DERET, avoid the swap. */ | |
3343 | || (history[0].insn_opcode == INSN_ERET) | |
3344 | || (history[0].insn_opcode == INSN_DERET)) | |
252b5132 | 3345 | { |
29024861 DU |
3346 | if (mips_opts.mips16 |
3347 | && (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
3348 | && (pinfo & (MIPS16_INSN_READ_X | MIPS16_INSN_READ_31)) | |
3994f87e | 3349 | && ISA_SUPPORTS_MIPS16E) |
29024861 DU |
3350 | { |
3351 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
3352 | ip->insn_opcode |= 0x0080; | |
3353 | install_insn (ip); | |
3354 | insert_into_history (0, 1, ip); | |
3355 | } | |
3356 | else | |
3357 | { | |
3358 | /* We could do even better for unconditional branches to | |
3359 | portions of this object file; we could pick up the | |
3360 | instruction at the destination, put it in the delay | |
3361 | slot, and bump the destination address. */ | |
3362 | insert_into_history (0, 1, ip); | |
3363 | emit_nop (); | |
3364 | } | |
3365 | ||
dd22970f ILT |
3366 | if (mips_relax.sequence) |
3367 | mips_relax.sizes[mips_relax.sequence - 1] += 4; | |
252b5132 RH |
3368 | } |
3369 | else | |
3370 | { | |
3371 | /* It looks like we can actually do the swap. */ | |
1e915849 RS |
3372 | struct mips_cl_insn delay = history[0]; |
3373 | if (mips_opts.mips16) | |
252b5132 | 3374 | { |
b8ee1a6e DU |
3375 | know (delay.frag == ip->frag); |
3376 | move_insn (ip, delay.frag, delay.where); | |
3377 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
1e915849 RS |
3378 | } |
3379 | else if (relaxed_branch) | |
3380 | { | |
3381 | /* Add the delay slot instruction to the end of the | |
3382 | current frag and shrink the fixed part of the | |
3383 | original frag. If the branch occupies the tail of | |
3384 | the latter, move it backwards to cover the gap. */ | |
3385 | delay.frag->fr_fix -= 4; | |
3386 | if (delay.frag == ip->frag) | |
3387 | move_insn (ip, ip->frag, ip->where - 4); | |
3388 | add_fixed_insn (&delay); | |
252b5132 RH |
3389 | } |
3390 | else | |
3391 | { | |
1e915849 RS |
3392 | move_insn (&delay, ip->frag, ip->where); |
3393 | move_insn (ip, history[0].frag, history[0].where); | |
252b5132 | 3394 | } |
1e915849 RS |
3395 | history[0] = *ip; |
3396 | delay.fixed_p = 1; | |
3397 | insert_into_history (0, 1, &delay); | |
252b5132 | 3398 | } |
252b5132 RH |
3399 | |
3400 | /* If that was an unconditional branch, forget the previous | |
3401 | insn information. */ | |
3402 | if (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
6a32d874 | 3403 | { |
6a32d874 CM |
3404 | mips_no_prev_insn (); |
3405 | } | |
252b5132 RH |
3406 | } |
3407 | else if (pinfo & INSN_COND_BRANCH_LIKELY) | |
3408 | { | |
3409 | /* We don't yet optimize a branch likely. What we should do | |
3410 | is look at the target, copy the instruction found there | |
3411 | into the delay slot, and increment the branch to jump to | |
3412 | the next instruction. */ | |
1e915849 | 3413 | insert_into_history (0, 1, ip); |
252b5132 | 3414 | emit_nop (); |
252b5132 RH |
3415 | } |
3416 | else | |
1e915849 | 3417 | insert_into_history (0, 1, ip); |
252b5132 | 3418 | } |
1e915849 RS |
3419 | else |
3420 | insert_into_history (0, 1, ip); | |
252b5132 RH |
3421 | |
3422 | /* We just output an insn, so the next one doesn't have a label. */ | |
3423 | mips_clear_insn_labels (); | |
252b5132 RH |
3424 | } |
3425 | ||
7d10b47d | 3426 | /* Forget that there was any previous instruction or label. */ |
252b5132 RH |
3427 | |
3428 | static void | |
7d10b47d | 3429 | mips_no_prev_insn (void) |
252b5132 | 3430 | { |
7d10b47d RS |
3431 | prev_nop_frag = NULL; |
3432 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
3433 | mips_clear_insn_labels (); |
3434 | } | |
3435 | ||
7d10b47d RS |
3436 | /* This function must be called before we emit something other than |
3437 | instructions. It is like mips_no_prev_insn except that it inserts | |
3438 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 3439 | |
7d10b47d RS |
3440 | void |
3441 | mips_emit_delays (void) | |
252b5132 RH |
3442 | { |
3443 | if (! mips_opts.noreorder) | |
3444 | { | |
71400594 | 3445 | int nops = nops_for_insn (history, NULL); |
252b5132 RH |
3446 | if (nops > 0) |
3447 | { | |
7d10b47d RS |
3448 | while (nops-- > 0) |
3449 | add_fixed_insn (NOP_INSN); | |
3450 | mips_move_labels (); | |
3451 | } | |
3452 | } | |
3453 | mips_no_prev_insn (); | |
3454 | } | |
3455 | ||
3456 | /* Start a (possibly nested) noreorder block. */ | |
3457 | ||
3458 | static void | |
3459 | start_noreorder (void) | |
3460 | { | |
3461 | if (mips_opts.noreorder == 0) | |
3462 | { | |
3463 | unsigned int i; | |
3464 | int nops; | |
3465 | ||
3466 | /* None of the instructions before the .set noreorder can be moved. */ | |
3467 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
3468 | history[i].fixed_p = 1; | |
3469 | ||
3470 | /* Insert any nops that might be needed between the .set noreorder | |
3471 | block and the previous instructions. We will later remove any | |
3472 | nops that turn out not to be needed. */ | |
3473 | nops = nops_for_insn (history, NULL); | |
3474 | if (nops > 0) | |
3475 | { | |
3476 | if (mips_optimize != 0) | |
252b5132 RH |
3477 | { |
3478 | /* Record the frag which holds the nop instructions, so | |
3479 | that we can remove them if we don't need them. */ | |
3480 | frag_grow (mips_opts.mips16 ? nops * 2 : nops * 4); | |
3481 | prev_nop_frag = frag_now; | |
3482 | prev_nop_frag_holds = nops; | |
3483 | prev_nop_frag_required = 0; | |
3484 | prev_nop_frag_since = 0; | |
3485 | } | |
3486 | ||
3487 | for (; nops > 0; --nops) | |
1e915849 | 3488 | add_fixed_insn (NOP_INSN); |
252b5132 | 3489 | |
7d10b47d RS |
3490 | /* Move on to a new frag, so that it is safe to simply |
3491 | decrease the size of prev_nop_frag. */ | |
3492 | frag_wane (frag_now); | |
3493 | frag_new (0); | |
404a8071 | 3494 | mips_move_labels (); |
252b5132 | 3495 | } |
7d10b47d RS |
3496 | mips16_mark_labels (); |
3497 | mips_clear_insn_labels (); | |
252b5132 | 3498 | } |
7d10b47d RS |
3499 | mips_opts.noreorder++; |
3500 | mips_any_noreorder = 1; | |
3501 | } | |
252b5132 | 3502 | |
7d10b47d | 3503 | /* End a nested noreorder block. */ |
252b5132 | 3504 | |
7d10b47d RS |
3505 | static void |
3506 | end_noreorder (void) | |
3507 | { | |
6a32d874 | 3508 | |
7d10b47d RS |
3509 | mips_opts.noreorder--; |
3510 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
3511 | { | |
3512 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
3513 | handling nop insertion the .set reorder way. */ | |
3514 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
3515 | * (mips_opts.mips16 ? 2 : 4)); | |
3516 | insert_into_history (prev_nop_frag_since, | |
3517 | prev_nop_frag_required, NOP_INSN); | |
3518 | prev_nop_frag = NULL; | |
3519 | } | |
252b5132 RH |
3520 | } |
3521 | ||
584892a6 RS |
3522 | /* Set up global variables for the start of a new macro. */ |
3523 | ||
3524 | static void | |
3525 | macro_start (void) | |
3526 | { | |
3527 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
3528 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder | |
47e39b9d | 3529 | && (history[0].insn_mo->pinfo |
584892a6 RS |
3530 | & (INSN_UNCOND_BRANCH_DELAY |
3531 | | INSN_COND_BRANCH_DELAY | |
3532 | | INSN_COND_BRANCH_LIKELY)) != 0); | |
3533 | } | |
3534 | ||
3535 | /* Given that a macro is longer than 4 bytes, return the appropriate warning | |
3536 | for it. Return null if no warning is needed. SUBTYPE is a bitmask of | |
3537 | RELAX_DELAY_SLOT and RELAX_NOMACRO. */ | |
3538 | ||
3539 | static const char * | |
3540 | macro_warning (relax_substateT subtype) | |
3541 | { | |
3542 | if (subtype & RELAX_DELAY_SLOT) | |
3543 | return _("Macro instruction expanded into multiple instructions" | |
3544 | " in a branch delay slot"); | |
3545 | else if (subtype & RELAX_NOMACRO) | |
3546 | return _("Macro instruction expanded into multiple instructions"); | |
3547 | else | |
3548 | return 0; | |
3549 | } | |
3550 | ||
3551 | /* Finish up a macro. Emit warnings as appropriate. */ | |
3552 | ||
3553 | static void | |
3554 | macro_end (void) | |
3555 | { | |
3556 | if (mips_macro_warning.sizes[0] > 4 || mips_macro_warning.sizes[1] > 4) | |
3557 | { | |
3558 | relax_substateT subtype; | |
3559 | ||
3560 | /* Set up the relaxation warning flags. */ | |
3561 | subtype = 0; | |
3562 | if (mips_macro_warning.sizes[1] > mips_macro_warning.sizes[0]) | |
3563 | subtype |= RELAX_SECOND_LONGER; | |
3564 | if (mips_opts.warn_about_macros) | |
3565 | subtype |= RELAX_NOMACRO; | |
3566 | if (mips_macro_warning.delay_slot_p) | |
3567 | subtype |= RELAX_DELAY_SLOT; | |
3568 | ||
3569 | if (mips_macro_warning.sizes[0] > 4 && mips_macro_warning.sizes[1] > 4) | |
3570 | { | |
3571 | /* Either the macro has a single implementation or both | |
3572 | implementations are longer than 4 bytes. Emit the | |
3573 | warning now. */ | |
3574 | const char *msg = macro_warning (subtype); | |
3575 | if (msg != 0) | |
520725ea | 3576 | as_warn ("%s", msg); |
584892a6 RS |
3577 | } |
3578 | else | |
3579 | { | |
3580 | /* One implementation might need a warning but the other | |
3581 | definitely doesn't. */ | |
3582 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
3583 | } | |
3584 | } | |
3585 | } | |
3586 | ||
6e1304d8 RS |
3587 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
3588 | The first argument in *ARGS will be either the code for a single | |
3589 | relocation or -1 followed by the three codes that make up a | |
3590 | composite relocation. */ | |
3591 | ||
3592 | static void | |
3593 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
3594 | { | |
3595 | int i, next; | |
3596 | ||
3597 | next = va_arg (*args, int); | |
3598 | if (next >= 0) | |
3599 | r[0] = (bfd_reloc_code_real_type) next; | |
3600 | else | |
3601 | for (i = 0; i < 3; i++) | |
3602 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
3603 | } | |
3604 | ||
252b5132 RH |
3605 | /* Build an instruction created by a macro expansion. This is passed |
3606 | a pointer to the count of instructions created so far, an | |
3607 | expression, the name of the instruction to build, an operand format | |
3608 | string, and corresponding arguments. */ | |
3609 | ||
252b5132 | 3610 | static void |
67c0d1eb | 3611 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 3612 | { |
1e915849 | 3613 | const struct mips_opcode *mo; |
252b5132 | 3614 | struct mips_cl_insn insn; |
f6688943 | 3615 | bfd_reloc_code_real_type r[3]; |
252b5132 | 3616 | va_list args; |
252b5132 | 3617 | |
252b5132 | 3618 | va_start (args, fmt); |
252b5132 | 3619 | |
252b5132 RH |
3620 | if (mips_opts.mips16) |
3621 | { | |
03ea81db | 3622 | mips16_macro_build (ep, name, fmt, &args); |
252b5132 RH |
3623 | va_end (args); |
3624 | return; | |
3625 | } | |
3626 | ||
f6688943 TS |
3627 | r[0] = BFD_RELOC_UNUSED; |
3628 | r[1] = BFD_RELOC_UNUSED; | |
3629 | r[2] = BFD_RELOC_UNUSED; | |
1e915849 | 3630 | mo = (struct mips_opcode *) hash_find (op_hash, name); |
9c2799c2 NC |
3631 | gas_assert (mo); |
3632 | gas_assert (strcmp (name, mo->name) == 0); | |
1e915849 | 3633 | |
8b082fb1 TS |
3634 | while (1) |
3635 | { | |
3636 | /* Search until we get a match for NAME. It is assumed here that | |
3637 | macros will never generate MDMX, MIPS-3D, or MT instructions. */ | |
3638 | if (strcmp (fmt, mo->args) == 0 | |
3639 | && mo->pinfo != INSN_MACRO | |
f79e2745 | 3640 | && is_opcode_valid (mo)) |
8b082fb1 TS |
3641 | break; |
3642 | ||
1e915849 | 3643 | ++mo; |
9c2799c2 NC |
3644 | gas_assert (mo->name); |
3645 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
3646 | } |
3647 | ||
1e915849 | 3648 | create_insn (&insn, mo); |
252b5132 RH |
3649 | for (;;) |
3650 | { | |
3651 | switch (*fmt++) | |
3652 | { | |
3653 | case '\0': | |
3654 | break; | |
3655 | ||
3656 | case ',': | |
3657 | case '(': | |
3658 | case ')': | |
3659 | continue; | |
3660 | ||
5f74bc13 CD |
3661 | case '+': |
3662 | switch (*fmt++) | |
3663 | { | |
3664 | case 'A': | |
3665 | case 'E': | |
bf12938e | 3666 | INSERT_OPERAND (SHAMT, insn, va_arg (args, int)); |
5f74bc13 CD |
3667 | continue; |
3668 | ||
3669 | case 'B': | |
3670 | case 'F': | |
3671 | /* Note that in the macro case, these arguments are already | |
3672 | in MSB form. (When handling the instruction in the | |
3673 | non-macro case, these arguments are sizes from which | |
3674 | MSB values must be calculated.) */ | |
bf12938e | 3675 | INSERT_OPERAND (INSMSB, insn, va_arg (args, int)); |
5f74bc13 CD |
3676 | continue; |
3677 | ||
3678 | case 'C': | |
3679 | case 'G': | |
3680 | case 'H': | |
3681 | /* Note that in the macro case, these arguments are already | |
3682 | in MSBD form. (When handling the instruction in the | |
3683 | non-macro case, these arguments are sizes from which | |
3684 | MSBD values must be calculated.) */ | |
bf12938e | 3685 | INSERT_OPERAND (EXTMSBD, insn, va_arg (args, int)); |
5f74bc13 CD |
3686 | continue; |
3687 | ||
dd3cbb7e NC |
3688 | case 'Q': |
3689 | INSERT_OPERAND (SEQI, insn, va_arg (args, int)); | |
3690 | continue; | |
3691 | ||
5f74bc13 CD |
3692 | default: |
3693 | internalError (); | |
3694 | } | |
3695 | continue; | |
3696 | ||
8b082fb1 TS |
3697 | case '2': |
3698 | INSERT_OPERAND (BP, insn, va_arg (args, int)); | |
3699 | continue; | |
3700 | ||
252b5132 RH |
3701 | case 't': |
3702 | case 'w': | |
3703 | case 'E': | |
bf12938e | 3704 | INSERT_OPERAND (RT, insn, va_arg (args, int)); |
252b5132 RH |
3705 | continue; |
3706 | ||
3707 | case 'c': | |
bf12938e | 3708 | INSERT_OPERAND (CODE, insn, va_arg (args, int)); |
38487616 TS |
3709 | continue; |
3710 | ||
252b5132 RH |
3711 | case 'T': |
3712 | case 'W': | |
bf12938e | 3713 | INSERT_OPERAND (FT, insn, va_arg (args, int)); |
252b5132 RH |
3714 | continue; |
3715 | ||
3716 | case 'd': | |
3717 | case 'G': | |
af7ee8bf | 3718 | case 'K': |
bf12938e | 3719 | INSERT_OPERAND (RD, insn, va_arg (args, int)); |
252b5132 RH |
3720 | continue; |
3721 | ||
4372b673 NC |
3722 | case 'U': |
3723 | { | |
3724 | int tmp = va_arg (args, int); | |
3725 | ||
bf12938e RS |
3726 | INSERT_OPERAND (RT, insn, tmp); |
3727 | INSERT_OPERAND (RD, insn, tmp); | |
beae10d5 | 3728 | continue; |
4372b673 NC |
3729 | } |
3730 | ||
252b5132 RH |
3731 | case 'V': |
3732 | case 'S': | |
bf12938e | 3733 | INSERT_OPERAND (FS, insn, va_arg (args, int)); |
252b5132 RH |
3734 | continue; |
3735 | ||
3736 | case 'z': | |
3737 | continue; | |
3738 | ||
3739 | case '<': | |
bf12938e | 3740 | INSERT_OPERAND (SHAMT, insn, va_arg (args, int)); |
252b5132 RH |
3741 | continue; |
3742 | ||
3743 | case 'D': | |
bf12938e | 3744 | INSERT_OPERAND (FD, insn, va_arg (args, int)); |
252b5132 RH |
3745 | continue; |
3746 | ||
3747 | case 'B': | |
bf12938e | 3748 | INSERT_OPERAND (CODE20, insn, va_arg (args, int)); |
252b5132 RH |
3749 | continue; |
3750 | ||
4372b673 | 3751 | case 'J': |
bf12938e | 3752 | INSERT_OPERAND (CODE19, insn, va_arg (args, int)); |
4372b673 NC |
3753 | continue; |
3754 | ||
252b5132 | 3755 | case 'q': |
bf12938e | 3756 | INSERT_OPERAND (CODE2, insn, va_arg (args, int)); |
252b5132 RH |
3757 | continue; |
3758 | ||
3759 | case 'b': | |
3760 | case 's': | |
3761 | case 'r': | |
3762 | case 'v': | |
bf12938e | 3763 | INSERT_OPERAND (RS, insn, va_arg (args, int)); |
252b5132 RH |
3764 | continue; |
3765 | ||
3766 | case 'i': | |
3767 | case 'j': | |
3768 | case 'o': | |
6e1304d8 | 3769 | macro_read_relocs (&args, r); |
9c2799c2 | 3770 | gas_assert (*r == BFD_RELOC_GPREL16 |
f6688943 TS |
3771 | || *r == BFD_RELOC_MIPS_LITERAL |
3772 | || *r == BFD_RELOC_MIPS_HIGHER | |
3773 | || *r == BFD_RELOC_HI16_S | |
3774 | || *r == BFD_RELOC_LO16 | |
3775 | || *r == BFD_RELOC_MIPS_GOT16 | |
3776 | || *r == BFD_RELOC_MIPS_CALL16 | |
438c16b8 TS |
3777 | || *r == BFD_RELOC_MIPS_GOT_DISP |
3778 | || *r == BFD_RELOC_MIPS_GOT_PAGE | |
3779 | || *r == BFD_RELOC_MIPS_GOT_OFST | |
f6688943 | 3780 | || *r == BFD_RELOC_MIPS_GOT_LO16 |
3e722fb5 | 3781 | || *r == BFD_RELOC_MIPS_CALL_LO16); |
252b5132 RH |
3782 | continue; |
3783 | ||
3784 | case 'u': | |
6e1304d8 | 3785 | macro_read_relocs (&args, r); |
9c2799c2 | 3786 | gas_assert (ep != NULL |
252b5132 RH |
3787 | && (ep->X_op == O_constant |
3788 | || (ep->X_op == O_symbol | |
f6688943 TS |
3789 | && (*r == BFD_RELOC_MIPS_HIGHEST |
3790 | || *r == BFD_RELOC_HI16_S | |
3791 | || *r == BFD_RELOC_HI16 | |
3792 | || *r == BFD_RELOC_GPREL16 | |
3793 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
3e722fb5 | 3794 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); |
252b5132 RH |
3795 | continue; |
3796 | ||
3797 | case 'p': | |
9c2799c2 | 3798 | gas_assert (ep != NULL); |
bad36eac | 3799 | |
252b5132 RH |
3800 | /* |
3801 | * This allows macro() to pass an immediate expression for | |
3802 | * creating short branches without creating a symbol. | |
bad36eac DJ |
3803 | * |
3804 | * We don't allow branch relaxation for these branches, as | |
3805 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
3806 | */ |
3807 | if (ep->X_op == O_constant) | |
3808 | { | |
bad36eac DJ |
3809 | if ((ep->X_add_number & 3) != 0) |
3810 | as_bad (_("branch to misaligned address (0x%lx)"), | |
3811 | (unsigned long) ep->X_add_number); | |
3812 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
3813 | as_bad (_("branch address range overflow (0x%lx)"), | |
3814 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
3815 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
3816 | ep = NULL; | |
3817 | } | |
3818 | else | |
0b25d3e6 | 3819 | *r = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
3820 | continue; |
3821 | ||
3822 | case 'a': | |
9c2799c2 | 3823 | gas_assert (ep != NULL); |
f6688943 | 3824 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
3825 | continue; |
3826 | ||
3827 | case 'C': | |
a9e24354 | 3828 | INSERT_OPERAND (COPZ, insn, va_arg (args, unsigned long)); |
252b5132 RH |
3829 | continue; |
3830 | ||
d43b4baf | 3831 | case 'k': |
a9e24354 | 3832 | INSERT_OPERAND (CACHE, insn, va_arg (args, unsigned long)); |
d43b4baf TS |
3833 | continue; |
3834 | ||
252b5132 RH |
3835 | default: |
3836 | internalError (); | |
3837 | } | |
3838 | break; | |
3839 | } | |
3840 | va_end (args); | |
9c2799c2 | 3841 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3842 | |
4d7206a2 | 3843 | append_insn (&insn, ep, r); |
252b5132 RH |
3844 | } |
3845 | ||
3846 | static void | |
67c0d1eb | 3847 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
03ea81db | 3848 | va_list *args) |
252b5132 | 3849 | { |
1e915849 | 3850 | struct mips_opcode *mo; |
252b5132 | 3851 | struct mips_cl_insn insn; |
f6688943 TS |
3852 | bfd_reloc_code_real_type r[3] |
3853 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 3854 | |
1e915849 | 3855 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
9c2799c2 NC |
3856 | gas_assert (mo); |
3857 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 | 3858 | |
1e915849 | 3859 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 3860 | { |
1e915849 | 3861 | ++mo; |
9c2799c2 NC |
3862 | gas_assert (mo->name); |
3863 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
3864 | } |
3865 | ||
1e915849 | 3866 | create_insn (&insn, mo); |
252b5132 RH |
3867 | for (;;) |
3868 | { | |
3869 | int c; | |
3870 | ||
3871 | c = *fmt++; | |
3872 | switch (c) | |
3873 | { | |
3874 | case '\0': | |
3875 | break; | |
3876 | ||
3877 | case ',': | |
3878 | case '(': | |
3879 | case ')': | |
3880 | continue; | |
3881 | ||
3882 | case 'y': | |
3883 | case 'w': | |
03ea81db | 3884 | MIPS16_INSERT_OPERAND (RY, insn, va_arg (*args, int)); |
252b5132 RH |
3885 | continue; |
3886 | ||
3887 | case 'x': | |
3888 | case 'v': | |
03ea81db | 3889 | MIPS16_INSERT_OPERAND (RX, insn, va_arg (*args, int)); |
252b5132 RH |
3890 | continue; |
3891 | ||
3892 | case 'z': | |
03ea81db | 3893 | MIPS16_INSERT_OPERAND (RZ, insn, va_arg (*args, int)); |
252b5132 RH |
3894 | continue; |
3895 | ||
3896 | case 'Z': | |
03ea81db | 3897 | MIPS16_INSERT_OPERAND (MOVE32Z, insn, va_arg (*args, int)); |
252b5132 RH |
3898 | continue; |
3899 | ||
3900 | case '0': | |
3901 | case 'S': | |
3902 | case 'P': | |
3903 | case 'R': | |
3904 | continue; | |
3905 | ||
3906 | case 'X': | |
03ea81db | 3907 | MIPS16_INSERT_OPERAND (REGR32, insn, va_arg (*args, int)); |
252b5132 RH |
3908 | continue; |
3909 | ||
3910 | case 'Y': | |
3911 | { | |
3912 | int regno; | |
3913 | ||
03ea81db | 3914 | regno = va_arg (*args, int); |
252b5132 | 3915 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); |
a9e24354 | 3916 | MIPS16_INSERT_OPERAND (REG32R, insn, regno); |
252b5132 RH |
3917 | } |
3918 | continue; | |
3919 | ||
3920 | case '<': | |
3921 | case '>': | |
3922 | case '4': | |
3923 | case '5': | |
3924 | case 'H': | |
3925 | case 'W': | |
3926 | case 'D': | |
3927 | case 'j': | |
3928 | case '8': | |
3929 | case 'V': | |
3930 | case 'C': | |
3931 | case 'U': | |
3932 | case 'k': | |
3933 | case 'K': | |
3934 | case 'p': | |
3935 | case 'q': | |
3936 | { | |
9c2799c2 | 3937 | gas_assert (ep != NULL); |
252b5132 RH |
3938 | |
3939 | if (ep->X_op != O_constant) | |
874e8986 | 3940 | *r = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
3941 | else |
3942 | { | |
b34976b6 AM |
3943 | mips16_immed (NULL, 0, c, ep->X_add_number, FALSE, FALSE, |
3944 | FALSE, &insn.insn_opcode, &insn.use_extend, | |
c4e7957c | 3945 | &insn.extend); |
252b5132 | 3946 | ep = NULL; |
f6688943 | 3947 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
3948 | } |
3949 | } | |
3950 | continue; | |
3951 | ||
3952 | case '6': | |
03ea81db | 3953 | MIPS16_INSERT_OPERAND (IMM6, insn, va_arg (*args, int)); |
252b5132 RH |
3954 | continue; |
3955 | } | |
3956 | ||
3957 | break; | |
3958 | } | |
3959 | ||
9c2799c2 | 3960 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3961 | |
4d7206a2 | 3962 | append_insn (&insn, ep, r); |
252b5132 RH |
3963 | } |
3964 | ||
2051e8c4 MR |
3965 | /* |
3966 | * Sign-extend 32-bit mode constants that have bit 31 set and all | |
3967 | * higher bits unset. | |
3968 | */ | |
9f872bbe | 3969 | static void |
2051e8c4 MR |
3970 | normalize_constant_expr (expressionS *ex) |
3971 | { | |
9ee2a2d4 | 3972 | if (ex->X_op == O_constant |
2051e8c4 MR |
3973 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) |
3974 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
3975 | - 0x80000000); | |
3976 | } | |
3977 | ||
3978 | /* | |
3979 | * Sign-extend 32-bit mode address offsets that have bit 31 set and | |
3980 | * all higher bits unset. | |
3981 | */ | |
3982 | static void | |
3983 | normalize_address_expr (expressionS *ex) | |
3984 | { | |
3985 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
3986 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
3987 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
3988 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
3989 | - 0x80000000); | |
3990 | } | |
3991 | ||
438c16b8 TS |
3992 | /* |
3993 | * Generate a "jalr" instruction with a relocation hint to the called | |
3994 | * function. This occurs in NewABI PIC code. | |
3995 | */ | |
3996 | static void | |
67c0d1eb | 3997 | macro_build_jalr (expressionS *ep) |
438c16b8 | 3998 | { |
685736be | 3999 | char *f = NULL; |
b34976b6 | 4000 | |
1180b5a4 | 4001 | if (MIPS_JALR_HINT_P (ep)) |
f21f8242 | 4002 | { |
cc3d92a5 | 4003 | frag_grow (8); |
f21f8242 AO |
4004 | f = frag_more (0); |
4005 | } | |
67c0d1eb | 4006 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); |
1180b5a4 | 4007 | if (MIPS_JALR_HINT_P (ep)) |
f21f8242 | 4008 | fix_new_exp (frag_now, f - frag_now->fr_literal, |
a105a300 | 4009 | 4, ep, FALSE, BFD_RELOC_MIPS_JALR); |
438c16b8 TS |
4010 | } |
4011 | ||
252b5132 RH |
4012 | /* |
4013 | * Generate a "lui" instruction. | |
4014 | */ | |
4015 | static void | |
67c0d1eb | 4016 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 RH |
4017 | { |
4018 | expressionS high_expr; | |
1e915849 | 4019 | const struct mips_opcode *mo; |
252b5132 | 4020 | struct mips_cl_insn insn; |
f6688943 TS |
4021 | bfd_reloc_code_real_type r[3] |
4022 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
5a38dc70 AM |
4023 | const char *name = "lui"; |
4024 | const char *fmt = "t,u"; | |
252b5132 | 4025 | |
9c2799c2 | 4026 | gas_assert (! mips_opts.mips16); |
252b5132 | 4027 | |
4d7206a2 | 4028 | high_expr = *ep; |
252b5132 RH |
4029 | |
4030 | if (high_expr.X_op == O_constant) | |
4031 | { | |
54f4ddb3 | 4032 | /* We can compute the instruction now without a relocation entry. */ |
e7d556df TS |
4033 | high_expr.X_add_number = ((high_expr.X_add_number + 0x8000) |
4034 | >> 16) & 0xffff; | |
f6688943 | 4035 | *r = BFD_RELOC_UNUSED; |
252b5132 | 4036 | } |
78e1bb40 | 4037 | else |
252b5132 | 4038 | { |
9c2799c2 | 4039 | gas_assert (ep->X_op == O_symbol); |
bbe506e8 TS |
4040 | /* _gp_disp is a special case, used from s_cpload. |
4041 | __gnu_local_gp is used if mips_no_shared. */ | |
9c2799c2 | 4042 | gas_assert (mips_pic == NO_PIC |
78e1bb40 | 4043 | || (! HAVE_NEWABI |
aa6975fb ILT |
4044 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
4045 | || (! mips_in_shared | |
bbe506e8 TS |
4046 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
4047 | "__gnu_local_gp") == 0)); | |
f6688943 | 4048 | *r = BFD_RELOC_HI16_S; |
252b5132 RH |
4049 | } |
4050 | ||
1e915849 | 4051 | mo = hash_find (op_hash, name); |
9c2799c2 NC |
4052 | gas_assert (strcmp (name, mo->name) == 0); |
4053 | gas_assert (strcmp (fmt, mo->args) == 0); | |
1e915849 | 4054 | create_insn (&insn, mo); |
252b5132 | 4055 | |
bf12938e RS |
4056 | insn.insn_opcode = insn.insn_mo->match; |
4057 | INSERT_OPERAND (RT, insn, regnum); | |
f6688943 | 4058 | if (*r == BFD_RELOC_UNUSED) |
252b5132 RH |
4059 | { |
4060 | insn.insn_opcode |= high_expr.X_add_number; | |
4d7206a2 | 4061 | append_insn (&insn, NULL, r); |
252b5132 RH |
4062 | } |
4063 | else | |
4d7206a2 | 4064 | append_insn (&insn, &high_expr, r); |
252b5132 RH |
4065 | } |
4066 | ||
885add95 CD |
4067 | /* Generate a sequence of instructions to do a load or store from a constant |
4068 | offset off of a base register (breg) into/from a target register (treg), | |
4069 | using AT if necessary. */ | |
4070 | static void | |
67c0d1eb RS |
4071 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
4072 | int treg, int breg, int dbl) | |
885add95 | 4073 | { |
9c2799c2 | 4074 | gas_assert (ep->X_op == O_constant); |
885add95 | 4075 | |
256ab948 | 4076 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
4077 | if (!dbl) |
4078 | normalize_constant_expr (ep); | |
256ab948 | 4079 | |
67c1ffbe | 4080 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 4081 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
4082 | as_warn (_("operand overflow")); |
4083 | ||
4084 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
4085 | { | |
4086 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 4087 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
4088 | } |
4089 | else | |
4090 | { | |
4091 | /* 32-bit offset, need multiple instructions and AT, like: | |
4092 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
4093 | addu $tempreg,$tempreg,$breg | |
4094 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
4095 | to handle the complete offset. */ | |
67c0d1eb RS |
4096 | macro_build_lui (ep, AT); |
4097 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
4098 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 | 4099 | |
741fe287 | 4100 | if (!mips_opts.at) |
8fc2e39e | 4101 | as_bad (_("Macro used $at after \".set noat\"")); |
885add95 CD |
4102 | } |
4103 | } | |
4104 | ||
252b5132 RH |
4105 | /* set_at() |
4106 | * Generates code to set the $at register to true (one) | |
4107 | * if reg is less than the immediate expression. | |
4108 | */ | |
4109 | static void | |
67c0d1eb | 4110 | set_at (int reg, int unsignedp) |
252b5132 RH |
4111 | { |
4112 | if (imm_expr.X_op == O_constant | |
4113 | && imm_expr.X_add_number >= -0x8000 | |
4114 | && imm_expr.X_add_number < 0x8000) | |
67c0d1eb RS |
4115 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
4116 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
4117 | else |
4118 | { | |
67c0d1eb RS |
4119 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4120 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); | |
252b5132 RH |
4121 | } |
4122 | } | |
4123 | ||
4124 | /* Warn if an expression is not a constant. */ | |
4125 | ||
4126 | static void | |
17a2f251 | 4127 | check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex) |
252b5132 RH |
4128 | { |
4129 | if (ex->X_op == O_big) | |
4130 | as_bad (_("unsupported large constant")); | |
4131 | else if (ex->X_op != O_constant) | |
9ee2a2d4 MR |
4132 | as_bad (_("Instruction %s requires absolute expression"), |
4133 | ip->insn_mo->name); | |
13757d0c | 4134 | |
9ee2a2d4 MR |
4135 | if (HAVE_32BIT_GPRS) |
4136 | normalize_constant_expr (ex); | |
252b5132 RH |
4137 | } |
4138 | ||
4139 | /* Count the leading zeroes by performing a binary chop. This is a | |
4140 | bulky bit of source, but performance is a LOT better for the | |
4141 | majority of values than a simple loop to count the bits: | |
4142 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
4143 | if ((v) & (1 << (31 - lcnt))) | |
4144 | break; | |
4145 | However it is not code size friendly, and the gain will drop a bit | |
4146 | on certain cached systems. | |
4147 | */ | |
4148 | #define COUNT_TOP_ZEROES(v) \ | |
4149 | (((v) & ~0xffff) == 0 \ | |
4150 | ? ((v) & ~0xff) == 0 \ | |
4151 | ? ((v) & ~0xf) == 0 \ | |
4152 | ? ((v) & ~0x3) == 0 \ | |
4153 | ? ((v) & ~0x1) == 0 \ | |
4154 | ? !(v) \ | |
4155 | ? 32 \ | |
4156 | : 31 \ | |
4157 | : 30 \ | |
4158 | : ((v) & ~0x7) == 0 \ | |
4159 | ? 29 \ | |
4160 | : 28 \ | |
4161 | : ((v) & ~0x3f) == 0 \ | |
4162 | ? ((v) & ~0x1f) == 0 \ | |
4163 | ? 27 \ | |
4164 | : 26 \ | |
4165 | : ((v) & ~0x7f) == 0 \ | |
4166 | ? 25 \ | |
4167 | : 24 \ | |
4168 | : ((v) & ~0xfff) == 0 \ | |
4169 | ? ((v) & ~0x3ff) == 0 \ | |
4170 | ? ((v) & ~0x1ff) == 0 \ | |
4171 | ? 23 \ | |
4172 | : 22 \ | |
4173 | : ((v) & ~0x7ff) == 0 \ | |
4174 | ? 21 \ | |
4175 | : 20 \ | |
4176 | : ((v) & ~0x3fff) == 0 \ | |
4177 | ? ((v) & ~0x1fff) == 0 \ | |
4178 | ? 19 \ | |
4179 | : 18 \ | |
4180 | : ((v) & ~0x7fff) == 0 \ | |
4181 | ? 17 \ | |
4182 | : 16 \ | |
4183 | : ((v) & ~0xffffff) == 0 \ | |
4184 | ? ((v) & ~0xfffff) == 0 \ | |
4185 | ? ((v) & ~0x3ffff) == 0 \ | |
4186 | ? ((v) & ~0x1ffff) == 0 \ | |
4187 | ? 15 \ | |
4188 | : 14 \ | |
4189 | : ((v) & ~0x7ffff) == 0 \ | |
4190 | ? 13 \ | |
4191 | : 12 \ | |
4192 | : ((v) & ~0x3fffff) == 0 \ | |
4193 | ? ((v) & ~0x1fffff) == 0 \ | |
4194 | ? 11 \ | |
4195 | : 10 \ | |
4196 | : ((v) & ~0x7fffff) == 0 \ | |
4197 | ? 9 \ | |
4198 | : 8 \ | |
4199 | : ((v) & ~0xfffffff) == 0 \ | |
4200 | ? ((v) & ~0x3ffffff) == 0 \ | |
4201 | ? ((v) & ~0x1ffffff) == 0 \ | |
4202 | ? 7 \ | |
4203 | : 6 \ | |
4204 | : ((v) & ~0x7ffffff) == 0 \ | |
4205 | ? 5 \ | |
4206 | : 4 \ | |
4207 | : ((v) & ~0x3fffffff) == 0 \ | |
4208 | ? ((v) & ~0x1fffffff) == 0 \ | |
4209 | ? 3 \ | |
4210 | : 2 \ | |
4211 | : ((v) & ~0x7fffffff) == 0 \ | |
4212 | ? 1 \ | |
4213 | : 0) | |
4214 | ||
4215 | /* load_register() | |
67c1ffbe | 4216 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
4217 | * an absolute expression value into a register. |
4218 | */ | |
4219 | static void | |
67c0d1eb | 4220 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
4221 | { |
4222 | int freg; | |
4223 | expressionS hi32, lo32; | |
4224 | ||
4225 | if (ep->X_op != O_big) | |
4226 | { | |
9c2799c2 | 4227 | gas_assert (ep->X_op == O_constant); |
256ab948 TS |
4228 | |
4229 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
4230 | if (!dbl) |
4231 | normalize_constant_expr (ep); | |
256ab948 TS |
4232 | |
4233 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
4234 | { |
4235 | /* We can handle 16 bit signed values with an addiu to | |
4236 | $zero. No need to ever use daddiu here, since $zero and | |
4237 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 4238 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
4239 | return; |
4240 | } | |
4241 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
4242 | { | |
4243 | /* We can handle 16 bit unsigned values with an ori to | |
4244 | $zero. */ | |
67c0d1eb | 4245 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
4246 | return; |
4247 | } | |
256ab948 | 4248 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
4249 | { |
4250 | /* 32 bit values require an lui. */ | |
67c0d1eb | 4251 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_HI16); |
252b5132 | 4252 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 4253 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
4254 | return; |
4255 | } | |
4256 | } | |
4257 | ||
4258 | /* The value is larger than 32 bits. */ | |
4259 | ||
2051e8c4 | 4260 | if (!dbl || HAVE_32BIT_GPRS) |
252b5132 | 4261 | { |
55e08f71 NC |
4262 | char value[32]; |
4263 | ||
4264 | sprintf_vma (value, ep->X_add_number); | |
20e1fcfd | 4265 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 4266 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
4267 | return; |
4268 | } | |
4269 | ||
4270 | if (ep->X_op != O_big) | |
4271 | { | |
4272 | hi32 = *ep; | |
4273 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
4274 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
4275 | hi32.X_add_number &= 0xffffffff; | |
4276 | lo32 = *ep; | |
4277 | lo32.X_add_number &= 0xffffffff; | |
4278 | } | |
4279 | else | |
4280 | { | |
9c2799c2 | 4281 | gas_assert (ep->X_add_number > 2); |
252b5132 RH |
4282 | if (ep->X_add_number == 3) |
4283 | generic_bignum[3] = 0; | |
4284 | else if (ep->X_add_number > 4) | |
4285 | as_bad (_("Number larger than 64 bits")); | |
4286 | lo32.X_op = O_constant; | |
4287 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
4288 | hi32.X_op = O_constant; | |
4289 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
4290 | } | |
4291 | ||
4292 | if (hi32.X_add_number == 0) | |
4293 | freg = 0; | |
4294 | else | |
4295 | { | |
4296 | int shift, bit; | |
4297 | unsigned long hi, lo; | |
4298 | ||
956cd1d6 | 4299 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
4300 | { |
4301 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
4302 | { | |
67c0d1eb | 4303 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
4304 | return; |
4305 | } | |
4306 | if (lo32.X_add_number & 0x80000000) | |
4307 | { | |
67c0d1eb | 4308 | macro_build (&lo32, "lui", "t,u", reg, BFD_RELOC_HI16); |
252b5132 | 4309 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 4310 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
4311 | return; |
4312 | } | |
4313 | } | |
252b5132 RH |
4314 | |
4315 | /* Check for 16bit shifted constant. We know that hi32 is | |
4316 | non-zero, so start the mask on the first bit of the hi32 | |
4317 | value. */ | |
4318 | shift = 17; | |
4319 | do | |
beae10d5 KH |
4320 | { |
4321 | unsigned long himask, lomask; | |
4322 | ||
4323 | if (shift < 32) | |
4324 | { | |
4325 | himask = 0xffff >> (32 - shift); | |
4326 | lomask = (0xffff << shift) & 0xffffffff; | |
4327 | } | |
4328 | else | |
4329 | { | |
4330 | himask = 0xffff << (shift - 32); | |
4331 | lomask = 0; | |
4332 | } | |
4333 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
4334 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
4335 | { | |
4336 | expressionS tmp; | |
4337 | ||
4338 | tmp.X_op = O_constant; | |
4339 | if (shift < 32) | |
4340 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
4341 | | (lo32.X_add_number >> shift)); | |
4342 | else | |
4343 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb RS |
4344 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
4345 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", "d,w,<", | |
4346 | reg, reg, (shift >= 32) ? shift - 32 : shift); | |
beae10d5 KH |
4347 | return; |
4348 | } | |
f9419b05 | 4349 | ++shift; |
beae10d5 KH |
4350 | } |
4351 | while (shift <= (64 - 16)); | |
252b5132 RH |
4352 | |
4353 | /* Find the bit number of the lowest one bit, and store the | |
4354 | shifted value in hi/lo. */ | |
4355 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
4356 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
4357 | if (lo != 0) | |
4358 | { | |
4359 | bit = 0; | |
4360 | while ((lo & 1) == 0) | |
4361 | { | |
4362 | lo >>= 1; | |
4363 | ++bit; | |
4364 | } | |
4365 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
4366 | hi >>= bit; | |
4367 | } | |
4368 | else | |
4369 | { | |
4370 | bit = 32; | |
4371 | while ((hi & 1) == 0) | |
4372 | { | |
4373 | hi >>= 1; | |
4374 | ++bit; | |
4375 | } | |
4376 | lo = hi; | |
4377 | hi = 0; | |
4378 | } | |
4379 | ||
4380 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
4381 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
4382 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
4383 | { |
4384 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 4385 | if (shift != 0) |
beae10d5 | 4386 | { |
252b5132 RH |
4387 | expressionS tmp; |
4388 | ||
4389 | /* This instruction will set the register to be all | |
4390 | ones. */ | |
beae10d5 KH |
4391 | tmp.X_op = O_constant; |
4392 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 4393 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
4394 | if (bit != 0) |
4395 | { | |
4396 | bit += shift; | |
67c0d1eb RS |
4397 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", "d,w,<", |
4398 | reg, reg, (bit >= 32) ? bit - 32 : bit); | |
beae10d5 | 4399 | } |
67c0d1eb RS |
4400 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", "d,w,<", |
4401 | reg, reg, (shift >= 32) ? shift - 32 : shift); | |
beae10d5 KH |
4402 | return; |
4403 | } | |
4404 | } | |
252b5132 RH |
4405 | |
4406 | /* Sign extend hi32 before calling load_register, because we can | |
4407 | generally get better code when we load a sign extended value. */ | |
4408 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 4409 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 4410 | load_register (reg, &hi32, 0); |
252b5132 RH |
4411 | freg = reg; |
4412 | } | |
4413 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
4414 | { | |
4415 | if (freg != 0) | |
4416 | { | |
67c0d1eb | 4417 | macro_build (NULL, "dsll32", "d,w,<", reg, freg, 0); |
252b5132 RH |
4418 | freg = reg; |
4419 | } | |
4420 | } | |
4421 | else | |
4422 | { | |
4423 | expressionS mid16; | |
4424 | ||
956cd1d6 | 4425 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 4426 | { |
67c0d1eb RS |
4427 | macro_build (&lo32, "lui", "t,u", reg, BFD_RELOC_HI16); |
4428 | macro_build (NULL, "dsrl32", "d,w,<", reg, reg, 0); | |
beae10d5 KH |
4429 | return; |
4430 | } | |
252b5132 RH |
4431 | |
4432 | if (freg != 0) | |
4433 | { | |
67c0d1eb | 4434 | macro_build (NULL, "dsll", "d,w,<", reg, freg, 16); |
252b5132 RH |
4435 | freg = reg; |
4436 | } | |
4437 | mid16 = lo32; | |
4438 | mid16.X_add_number >>= 16; | |
67c0d1eb RS |
4439 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
4440 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
252b5132 RH |
4441 | freg = reg; |
4442 | } | |
4443 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 4444 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
4445 | } |
4446 | ||
269137b2 TS |
4447 | static inline void |
4448 | load_delay_nop (void) | |
4449 | { | |
4450 | if (!gpr_interlocks) | |
4451 | macro_build (NULL, "nop", ""); | |
4452 | } | |
4453 | ||
252b5132 RH |
4454 | /* Load an address into a register. */ |
4455 | ||
4456 | static void | |
67c0d1eb | 4457 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 4458 | { |
252b5132 RH |
4459 | if (ep->X_op != O_constant |
4460 | && ep->X_op != O_symbol) | |
4461 | { | |
4462 | as_bad (_("expression too complex")); | |
4463 | ep->X_op = O_constant; | |
4464 | } | |
4465 | ||
4466 | if (ep->X_op == O_constant) | |
4467 | { | |
67c0d1eb | 4468 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
4469 | return; |
4470 | } | |
4471 | ||
4472 | if (mips_pic == NO_PIC) | |
4473 | { | |
4474 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 4475 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
4476 | Otherwise we want |
4477 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
4478 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 4479 | If we have an addend, we always use the latter form. |
76b3015f | 4480 | |
d6bc6245 TS |
4481 | With 64bit address space and a usable $at we want |
4482 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4483 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
4484 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4485 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
4486 | dsll32 $reg,0 | |
3a482fd5 | 4487 | daddu $reg,$reg,$at |
76b3015f | 4488 | |
c03099e6 | 4489 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
4490 | on superscalar processors. |
4491 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4492 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4493 | dsll $reg,16 | |
4494 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
4495 | dsll $reg,16 | |
4496 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
4497 | |
4498 | For GP relative symbols in 64bit address space we can use | |
4499 | the same sequence as in 32bit address space. */ | |
aed1a261 | 4500 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 4501 | { |
6caf9ef4 TS |
4502 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
4503 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
4504 | { | |
4505 | relax_start (ep->X_add_symbol); | |
4506 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
4507 | mips_gp_register, BFD_RELOC_GPREL16); | |
4508 | relax_switch (); | |
4509 | } | |
d6bc6245 | 4510 | |
741fe287 | 4511 | if (*used_at == 0 && mips_opts.at) |
d6bc6245 | 4512 | { |
67c0d1eb RS |
4513 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_HIGHEST); |
4514 | macro_build (ep, "lui", "t,u", AT, BFD_RELOC_HI16_S); | |
4515 | macro_build (ep, "daddiu", "t,r,j", reg, reg, | |
4516 | BFD_RELOC_MIPS_HIGHER); | |
4517 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
4518 | macro_build (NULL, "dsll32", "d,w,<", reg, reg, 0); | |
4519 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); | |
d6bc6245 TS |
4520 | *used_at = 1; |
4521 | } | |
4522 | else | |
4523 | { | |
67c0d1eb RS |
4524 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_HIGHEST); |
4525 | macro_build (ep, "daddiu", "t,r,j", reg, reg, | |
4526 | BFD_RELOC_MIPS_HIGHER); | |
4527 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
4528 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); | |
4529 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
4530 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); | |
d6bc6245 | 4531 | } |
6caf9ef4 TS |
4532 | |
4533 | if (mips_relax.sequence) | |
4534 | relax_end (); | |
d6bc6245 | 4535 | } |
252b5132 RH |
4536 | else |
4537 | { | |
d6bc6245 | 4538 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 4539 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 4540 | { |
4d7206a2 | 4541 | relax_start (ep->X_add_symbol); |
67c0d1eb | 4542 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 4543 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 4544 | relax_switch (); |
d6bc6245 | 4545 | } |
67c0d1eb RS |
4546 | macro_build_lui (ep, reg); |
4547 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
4548 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
4549 | if (mips_relax.sequence) |
4550 | relax_end (); | |
d6bc6245 | 4551 | } |
252b5132 | 4552 | } |
0a44bf69 | 4553 | else if (!mips_big_got) |
252b5132 RH |
4554 | { |
4555 | expressionS ex; | |
4556 | ||
4557 | /* If this is a reference to an external symbol, we want | |
4558 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4559 | Otherwise we want | |
4560 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4561 | nop | |
4562 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
4563 | If there is a constant, it must be added in after. |
4564 | ||
ed6fb7bd | 4565 | If we have NewABI, we want |
f5040a92 AO |
4566 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
4567 | unless we're referencing a global symbol with a non-zero | |
4568 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
4569 | if (HAVE_NEWABI) |
4570 | { | |
f5040a92 AO |
4571 | if (ep->X_add_number) |
4572 | { | |
4d7206a2 | 4573 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 4574 | ep->X_add_number = 0; |
4d7206a2 | 4575 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4576 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
4577 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
4578 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
4579 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4580 | ex.X_op = O_constant; | |
67c0d1eb | 4581 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 4582 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 4583 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 4584 | relax_switch (); |
f5040a92 | 4585 | } |
67c0d1eb | 4586 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4587 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
4588 | if (mips_relax.sequence) |
4589 | relax_end (); | |
ed6fb7bd SC |
4590 | } |
4591 | else | |
4592 | { | |
f5040a92 AO |
4593 | ex.X_add_number = ep->X_add_number; |
4594 | ep->X_add_number = 0; | |
67c0d1eb RS |
4595 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
4596 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 4597 | load_delay_nop (); |
4d7206a2 RS |
4598 | relax_start (ep->X_add_symbol); |
4599 | relax_switch (); | |
67c0d1eb | 4600 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 4601 | BFD_RELOC_LO16); |
4d7206a2 | 4602 | relax_end (); |
ed6fb7bd | 4603 | |
f5040a92 AO |
4604 | if (ex.X_add_number != 0) |
4605 | { | |
4606 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4607 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4608 | ex.X_op = O_constant; | |
67c0d1eb | 4609 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 4610 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 4611 | } |
252b5132 RH |
4612 | } |
4613 | } | |
0a44bf69 | 4614 | else if (mips_big_got) |
252b5132 RH |
4615 | { |
4616 | expressionS ex; | |
252b5132 RH |
4617 | |
4618 | /* This is the large GOT case. If this is a reference to an | |
4619 | external symbol, we want | |
4620 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
4621 | addu $reg,$reg,$gp | |
4622 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
4623 | |
4624 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
4625 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
4626 | nop | |
4627 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 4628 | If there is a constant, it must be added in after. |
f5040a92 AO |
4629 | |
4630 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
4631 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
4632 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 4633 | */ |
438c16b8 TS |
4634 | if (HAVE_NEWABI) |
4635 | { | |
4d7206a2 | 4636 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 4637 | ep->X_add_number = 0; |
4d7206a2 | 4638 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4639 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_GOT_HI16); |
4640 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
4641 | reg, reg, mips_gp_register); | |
4642 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
4643 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
4644 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
4645 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4646 | else if (ex.X_add_number) | |
4647 | { | |
4648 | ex.X_op = O_constant; | |
67c0d1eb RS |
4649 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4650 | BFD_RELOC_LO16); | |
f5040a92 AO |
4651 | } |
4652 | ||
4653 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 4654 | relax_switch (); |
67c0d1eb | 4655 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4656 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
4657 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4658 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 4659 | relax_end (); |
438c16b8 | 4660 | } |
252b5132 | 4661 | else |
438c16b8 | 4662 | { |
f5040a92 AO |
4663 | ex.X_add_number = ep->X_add_number; |
4664 | ep->X_add_number = 0; | |
4d7206a2 | 4665 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4666 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_GOT_HI16); |
4667 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
4668 | reg, reg, mips_gp_register); | |
4669 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
4670 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
4671 | relax_switch (); |
4672 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
4673 | { |
4674 | /* We need a nop before loading from $gp. This special | |
4675 | check is required because the lui which starts the main | |
4676 | instruction stream does not refer to $gp, and so will not | |
4677 | insert the nop which may be required. */ | |
67c0d1eb | 4678 | macro_build (NULL, "nop", ""); |
438c16b8 | 4679 | } |
67c0d1eb | 4680 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4681 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 4682 | load_delay_nop (); |
67c0d1eb | 4683 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 4684 | BFD_RELOC_LO16); |
4d7206a2 | 4685 | relax_end (); |
438c16b8 | 4686 | |
f5040a92 AO |
4687 | if (ex.X_add_number != 0) |
4688 | { | |
4689 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4690 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4691 | ex.X_op = O_constant; | |
67c0d1eb RS |
4692 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4693 | BFD_RELOC_LO16); | |
f5040a92 | 4694 | } |
252b5132 RH |
4695 | } |
4696 | } | |
252b5132 RH |
4697 | else |
4698 | abort (); | |
8fc2e39e | 4699 | |
741fe287 | 4700 | if (!mips_opts.at && *used_at == 1) |
8fc2e39e | 4701 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
4702 | } |
4703 | ||
ea1fb5dc RS |
4704 | /* Move the contents of register SOURCE into register DEST. */ |
4705 | ||
4706 | static void | |
67c0d1eb | 4707 | move_register (int dest, int source) |
ea1fb5dc | 4708 | { |
67c0d1eb RS |
4709 | macro_build (NULL, HAVE_32BIT_GPRS ? "addu" : "daddu", "d,v,t", |
4710 | dest, source, 0); | |
ea1fb5dc RS |
4711 | } |
4712 | ||
4d7206a2 | 4713 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
4714 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
4715 | The two alternatives are: | |
4d7206a2 RS |
4716 | |
4717 | Global symbol Local sybmol | |
4718 | ------------- ------------ | |
4719 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
4720 | ... ... | |
4721 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
4722 | ||
4723 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
4724 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
4725 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
4726 | |
4727 | static void | |
67c0d1eb | 4728 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
4729 | { |
4730 | expressionS global; | |
4731 | ||
4732 | global = *local; | |
4733 | global.X_add_number = 0; | |
4734 | ||
4735 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
4736 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
4737 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 4738 | relax_switch (); |
67c0d1eb RS |
4739 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
4740 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
4741 | relax_end (); |
4742 | } | |
4743 | ||
4744 | static void | |
67c0d1eb | 4745 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
4746 | { |
4747 | expressionS global; | |
4748 | ||
4749 | global.X_op = O_constant; | |
4750 | global.X_op_symbol = NULL; | |
4751 | global.X_add_symbol = NULL; | |
4752 | global.X_add_number = local->X_add_number; | |
4753 | ||
4754 | relax_start (local->X_add_symbol); | |
67c0d1eb | 4755 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
4756 | dest, dest, BFD_RELOC_LO16); |
4757 | relax_switch (); | |
67c0d1eb | 4758 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
4759 | relax_end (); |
4760 | } | |
4761 | ||
f6a22291 MR |
4762 | static void |
4763 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
4764 | { | |
4765 | expressionS global; | |
4766 | int hold_mips_optimize; | |
4767 | ||
4768 | global.X_op = O_constant; | |
4769 | global.X_op_symbol = NULL; | |
4770 | global.X_add_symbol = NULL; | |
4771 | global.X_add_number = local->X_add_number; | |
4772 | ||
4773 | relax_start (local->X_add_symbol); | |
4774 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
4775 | relax_switch (); | |
4776 | /* Set mips_optimize around the lui instruction to avoid | |
4777 | inserting an unnecessary nop after the lw. */ | |
4778 | hold_mips_optimize = mips_optimize; | |
4779 | mips_optimize = 2; | |
4780 | macro_build_lui (&global, tmp); | |
4781 | mips_optimize = hold_mips_optimize; | |
4782 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
4783 | relax_end (); | |
4784 | ||
4785 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
4786 | } | |
4787 | ||
252b5132 RH |
4788 | /* |
4789 | * Build macros | |
4790 | * This routine implements the seemingly endless macro or synthesized | |
4791 | * instructions and addressing modes in the mips assembly language. Many | |
4792 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 4793 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
4794 | * this verbose method. Others are not simple macros but are more like |
4795 | * optimizing code generation. | |
4796 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 4797 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
4798 | * The ensuing load upper instructions are ommited. This implies some kind |
4799 | * of global optimization. We currently only optimize within a single macro. | |
4800 | * For many of the load and store macros if the address is specified as a | |
4801 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
4802 | * first load register 'at' with zero and use it as the base register. The | |
4803 | * mips assembler simply uses register $zero. Just one tiny optimization | |
4804 | * we're missing. | |
4805 | */ | |
4806 | static void | |
17a2f251 | 4807 | macro (struct mips_cl_insn *ip) |
252b5132 | 4808 | { |
741fe287 MR |
4809 | unsigned int treg, sreg, dreg, breg; |
4810 | unsigned int tempreg; | |
252b5132 | 4811 | int mask; |
43841e91 | 4812 | int used_at = 0; |
252b5132 RH |
4813 | expressionS expr1; |
4814 | const char *s; | |
4815 | const char *s2; | |
4816 | const char *fmt; | |
4817 | int likely = 0; | |
4818 | int dbl = 0; | |
4819 | int coproc = 0; | |
4820 | int lr = 0; | |
4821 | int imm = 0; | |
1abe91b1 | 4822 | int call = 0; |
252b5132 | 4823 | int off; |
67c0d1eb | 4824 | offsetT maxnum; |
252b5132 | 4825 | bfd_reloc_code_real_type r; |
252b5132 RH |
4826 | int hold_mips_optimize; |
4827 | ||
9c2799c2 | 4828 | gas_assert (! mips_opts.mips16); |
252b5132 RH |
4829 | |
4830 | treg = (ip->insn_opcode >> 16) & 0x1f; | |
4831 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
4832 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
4833 | mask = ip->insn_mo->mask; | |
4834 | ||
4835 | expr1.X_op = O_constant; | |
4836 | expr1.X_op_symbol = NULL; | |
4837 | expr1.X_add_symbol = NULL; | |
4838 | expr1.X_add_number = 1; | |
4839 | ||
4840 | switch (mask) | |
4841 | { | |
4842 | case M_DABS: | |
4843 | dbl = 1; | |
4844 | case M_ABS: | |
4845 | /* bgez $a0,.+12 | |
4846 | move v0,$a0 | |
4847 | sub v0,$zero,$a0 | |
4848 | */ | |
4849 | ||
7d10b47d | 4850 | start_noreorder (); |
252b5132 RH |
4851 | |
4852 | expr1.X_add_number = 8; | |
67c0d1eb | 4853 | macro_build (&expr1, "bgez", "s,p", sreg); |
252b5132 | 4854 | if (dreg == sreg) |
67c0d1eb | 4855 | macro_build (NULL, "nop", "", 0); |
252b5132 | 4856 | else |
67c0d1eb RS |
4857 | move_register (dreg, sreg); |
4858 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); | |
252b5132 | 4859 | |
7d10b47d | 4860 | end_noreorder (); |
8fc2e39e | 4861 | break; |
252b5132 RH |
4862 | |
4863 | case M_ADD_I: | |
4864 | s = "addi"; | |
4865 | s2 = "add"; | |
4866 | goto do_addi; | |
4867 | case M_ADDU_I: | |
4868 | s = "addiu"; | |
4869 | s2 = "addu"; | |
4870 | goto do_addi; | |
4871 | case M_DADD_I: | |
4872 | dbl = 1; | |
4873 | s = "daddi"; | |
4874 | s2 = "dadd"; | |
4875 | goto do_addi; | |
4876 | case M_DADDU_I: | |
4877 | dbl = 1; | |
4878 | s = "daddiu"; | |
4879 | s2 = "daddu"; | |
4880 | do_addi: | |
4881 | if (imm_expr.X_op == O_constant | |
4882 | && imm_expr.X_add_number >= -0x8000 | |
4883 | && imm_expr.X_add_number < 0x8000) | |
4884 | { | |
67c0d1eb | 4885 | macro_build (&imm_expr, s, "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 4886 | break; |
252b5132 | 4887 | } |
8fc2e39e | 4888 | used_at = 1; |
67c0d1eb RS |
4889 | load_register (AT, &imm_expr, dbl); |
4890 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
4891 | break; |
4892 | ||
4893 | case M_AND_I: | |
4894 | s = "andi"; | |
4895 | s2 = "and"; | |
4896 | goto do_bit; | |
4897 | case M_OR_I: | |
4898 | s = "ori"; | |
4899 | s2 = "or"; | |
4900 | goto do_bit; | |
4901 | case M_NOR_I: | |
4902 | s = ""; | |
4903 | s2 = "nor"; | |
4904 | goto do_bit; | |
4905 | case M_XOR_I: | |
4906 | s = "xori"; | |
4907 | s2 = "xor"; | |
4908 | do_bit: | |
4909 | if (imm_expr.X_op == O_constant | |
4910 | && imm_expr.X_add_number >= 0 | |
4911 | && imm_expr.X_add_number < 0x10000) | |
4912 | { | |
4913 | if (mask != M_NOR_I) | |
67c0d1eb | 4914 | macro_build (&imm_expr, s, "t,r,i", treg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
4915 | else |
4916 | { | |
67c0d1eb RS |
4917 | macro_build (&imm_expr, "ori", "t,r,i", |
4918 | treg, sreg, BFD_RELOC_LO16); | |
4919 | macro_build (NULL, "nor", "d,v,t", treg, treg, 0); | |
252b5132 | 4920 | } |
8fc2e39e | 4921 | break; |
252b5132 RH |
4922 | } |
4923 | ||
8fc2e39e | 4924 | used_at = 1; |
67c0d1eb RS |
4925 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4926 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
4927 | break; |
4928 | ||
8b082fb1 TS |
4929 | case M_BALIGN: |
4930 | switch (imm_expr.X_add_number) | |
4931 | { | |
4932 | case 0: | |
4933 | macro_build (NULL, "nop", ""); | |
4934 | break; | |
4935 | case 2: | |
4936 | macro_build (NULL, "packrl.ph", "d,s,t", treg, treg, sreg); | |
4937 | break; | |
4938 | default: | |
4939 | macro_build (NULL, "balign", "t,s,2", treg, sreg, | |
4940 | (int)imm_expr.X_add_number); | |
4941 | break; | |
4942 | } | |
4943 | break; | |
4944 | ||
252b5132 RH |
4945 | case M_BEQ_I: |
4946 | s = "beq"; | |
4947 | goto beq_i; | |
4948 | case M_BEQL_I: | |
4949 | s = "beql"; | |
4950 | likely = 1; | |
4951 | goto beq_i; | |
4952 | case M_BNE_I: | |
4953 | s = "bne"; | |
4954 | goto beq_i; | |
4955 | case M_BNEL_I: | |
4956 | s = "bnel"; | |
4957 | likely = 1; | |
4958 | beq_i: | |
4959 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4960 | { | |
67c0d1eb | 4961 | macro_build (&offset_expr, s, "s,t,p", sreg, 0); |
8fc2e39e | 4962 | break; |
252b5132 | 4963 | } |
8fc2e39e | 4964 | used_at = 1; |
67c0d1eb RS |
4965 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4966 | macro_build (&offset_expr, s, "s,t,p", sreg, AT); | |
252b5132 RH |
4967 | break; |
4968 | ||
4969 | case M_BGEL: | |
4970 | likely = 1; | |
4971 | case M_BGE: | |
4972 | if (treg == 0) | |
4973 | { | |
67c0d1eb | 4974 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", sreg); |
8fc2e39e | 4975 | break; |
252b5132 RH |
4976 | } |
4977 | if (sreg == 0) | |
4978 | { | |
67c0d1eb | 4979 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", treg); |
8fc2e39e | 4980 | break; |
252b5132 | 4981 | } |
8fc2e39e | 4982 | used_at = 1; |
67c0d1eb RS |
4983 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); |
4984 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4985 | break; |
4986 | ||
4987 | case M_BGTL_I: | |
4988 | likely = 1; | |
4989 | case M_BGT_I: | |
4990 | /* check for > max integer */ | |
4991 | maxnum = 0x7fffffff; | |
ca4e0257 | 4992 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4993 | { |
4994 | maxnum <<= 16; | |
4995 | maxnum |= 0xffff; | |
4996 | maxnum <<= 16; | |
4997 | maxnum |= 0xffff; | |
4998 | } | |
4999 | if (imm_expr.X_op == O_constant | |
5000 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 5001 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
5002 | { |
5003 | do_false: | |
5004 | /* result is always false */ | |
5005 | if (! likely) | |
67c0d1eb | 5006 | macro_build (NULL, "nop", "", 0); |
252b5132 | 5007 | else |
67c0d1eb | 5008 | macro_build (&offset_expr, "bnel", "s,t,p", 0, 0); |
8fc2e39e | 5009 | break; |
252b5132 RH |
5010 | } |
5011 | if (imm_expr.X_op != O_constant) | |
5012 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 5013 | ++imm_expr.X_add_number; |
252b5132 RH |
5014 | /* FALLTHROUGH */ |
5015 | case M_BGE_I: | |
5016 | case M_BGEL_I: | |
5017 | if (mask == M_BGEL_I) | |
5018 | likely = 1; | |
5019 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5020 | { | |
67c0d1eb | 5021 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", sreg); |
8fc2e39e | 5022 | break; |
252b5132 RH |
5023 | } |
5024 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5025 | { | |
67c0d1eb | 5026 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", sreg); |
8fc2e39e | 5027 | break; |
252b5132 RH |
5028 | } |
5029 | maxnum = 0x7fffffff; | |
ca4e0257 | 5030 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
5031 | { |
5032 | maxnum <<= 16; | |
5033 | maxnum |= 0xffff; | |
5034 | maxnum <<= 16; | |
5035 | maxnum |= 0xffff; | |
5036 | } | |
5037 | maxnum = - maxnum - 1; | |
5038 | if (imm_expr.X_op == O_constant | |
5039 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 5040 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
5041 | { |
5042 | do_true: | |
5043 | /* result is always true */ | |
5044 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
67c0d1eb | 5045 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 5046 | break; |
252b5132 | 5047 | } |
8fc2e39e | 5048 | used_at = 1; |
67c0d1eb RS |
5049 | set_at (sreg, 0); |
5050 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
5051 | break; |
5052 | ||
5053 | case M_BGEUL: | |
5054 | likely = 1; | |
5055 | case M_BGEU: | |
5056 | if (treg == 0) | |
5057 | goto do_true; | |
5058 | if (sreg == 0) | |
5059 | { | |
67c0d1eb | 5060 | macro_build (&offset_expr, likely ? "beql" : "beq", |
17a2f251 | 5061 | "s,t,p", 0, treg); |
8fc2e39e | 5062 | break; |
252b5132 | 5063 | } |
8fc2e39e | 5064 | used_at = 1; |
67c0d1eb RS |
5065 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); |
5066 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
5067 | break; |
5068 | ||
5069 | case M_BGTUL_I: | |
5070 | likely = 1; | |
5071 | case M_BGTU_I: | |
5072 | if (sreg == 0 | |
ca4e0257 | 5073 | || (HAVE_32BIT_GPRS |
252b5132 | 5074 | && imm_expr.X_op == O_constant |
956cd1d6 | 5075 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
5076 | goto do_false; |
5077 | if (imm_expr.X_op != O_constant) | |
5078 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 5079 | ++imm_expr.X_add_number; |
252b5132 RH |
5080 | /* FALLTHROUGH */ |
5081 | case M_BGEU_I: | |
5082 | case M_BGEUL_I: | |
5083 | if (mask == M_BGEUL_I) | |
5084 | likely = 1; | |
5085 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5086 | goto do_true; | |
5087 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5088 | { | |
67c0d1eb | 5089 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 5090 | "s,t,p", sreg, 0); |
8fc2e39e | 5091 | break; |
252b5132 | 5092 | } |
8fc2e39e | 5093 | used_at = 1; |
67c0d1eb RS |
5094 | set_at (sreg, 1); |
5095 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
5096 | break; |
5097 | ||
5098 | case M_BGTL: | |
5099 | likely = 1; | |
5100 | case M_BGT: | |
5101 | if (treg == 0) | |
5102 | { | |
67c0d1eb | 5103 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", sreg); |
8fc2e39e | 5104 | break; |
252b5132 RH |
5105 | } |
5106 | if (sreg == 0) | |
5107 | { | |
67c0d1eb | 5108 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", treg); |
8fc2e39e | 5109 | break; |
252b5132 | 5110 | } |
8fc2e39e | 5111 | used_at = 1; |
67c0d1eb RS |
5112 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); |
5113 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5114 | break; |
5115 | ||
5116 | case M_BGTUL: | |
5117 | likely = 1; | |
5118 | case M_BGTU: | |
5119 | if (treg == 0) | |
5120 | { | |
67c0d1eb | 5121 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 5122 | "s,t,p", sreg, 0); |
8fc2e39e | 5123 | break; |
252b5132 RH |
5124 | } |
5125 | if (sreg == 0) | |
5126 | goto do_false; | |
8fc2e39e | 5127 | used_at = 1; |
67c0d1eb RS |
5128 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); |
5129 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5130 | break; |
5131 | ||
5132 | case M_BLEL: | |
5133 | likely = 1; | |
5134 | case M_BLE: | |
5135 | if (treg == 0) | |
5136 | { | |
67c0d1eb | 5137 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", sreg); |
8fc2e39e | 5138 | break; |
252b5132 RH |
5139 | } |
5140 | if (sreg == 0) | |
5141 | { | |
67c0d1eb | 5142 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", treg); |
8fc2e39e | 5143 | break; |
252b5132 | 5144 | } |
8fc2e39e | 5145 | used_at = 1; |
67c0d1eb RS |
5146 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); |
5147 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
5148 | break; |
5149 | ||
5150 | case M_BLEL_I: | |
5151 | likely = 1; | |
5152 | case M_BLE_I: | |
5153 | maxnum = 0x7fffffff; | |
ca4e0257 | 5154 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
5155 | { |
5156 | maxnum <<= 16; | |
5157 | maxnum |= 0xffff; | |
5158 | maxnum <<= 16; | |
5159 | maxnum |= 0xffff; | |
5160 | } | |
5161 | if (imm_expr.X_op == O_constant | |
5162 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 5163 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
5164 | goto do_true; |
5165 | if (imm_expr.X_op != O_constant) | |
5166 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 5167 | ++imm_expr.X_add_number; |
252b5132 RH |
5168 | /* FALLTHROUGH */ |
5169 | case M_BLT_I: | |
5170 | case M_BLTL_I: | |
5171 | if (mask == M_BLTL_I) | |
5172 | likely = 1; | |
5173 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5174 | { | |
67c0d1eb | 5175 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", sreg); |
8fc2e39e | 5176 | break; |
252b5132 RH |
5177 | } |
5178 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5179 | { | |
67c0d1eb | 5180 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", sreg); |
8fc2e39e | 5181 | break; |
252b5132 | 5182 | } |
8fc2e39e | 5183 | used_at = 1; |
67c0d1eb RS |
5184 | set_at (sreg, 0); |
5185 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5186 | break; |
5187 | ||
5188 | case M_BLEUL: | |
5189 | likely = 1; | |
5190 | case M_BLEU: | |
5191 | if (treg == 0) | |
5192 | { | |
67c0d1eb | 5193 | macro_build (&offset_expr, likely ? "beql" : "beq", |
17a2f251 | 5194 | "s,t,p", sreg, 0); |
8fc2e39e | 5195 | break; |
252b5132 RH |
5196 | } |
5197 | if (sreg == 0) | |
5198 | goto do_true; | |
8fc2e39e | 5199 | used_at = 1; |
67c0d1eb RS |
5200 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); |
5201 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
5202 | break; |
5203 | ||
5204 | case M_BLEUL_I: | |
5205 | likely = 1; | |
5206 | case M_BLEU_I: | |
5207 | if (sreg == 0 | |
ca4e0257 | 5208 | || (HAVE_32BIT_GPRS |
252b5132 | 5209 | && imm_expr.X_op == O_constant |
956cd1d6 | 5210 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
5211 | goto do_true; |
5212 | if (imm_expr.X_op != O_constant) | |
5213 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 5214 | ++imm_expr.X_add_number; |
252b5132 RH |
5215 | /* FALLTHROUGH */ |
5216 | case M_BLTU_I: | |
5217 | case M_BLTUL_I: | |
5218 | if (mask == M_BLTUL_I) | |
5219 | likely = 1; | |
5220 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5221 | goto do_false; | |
5222 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5223 | { | |
67c0d1eb | 5224 | macro_build (&offset_expr, likely ? "beql" : "beq", |
252b5132 | 5225 | "s,t,p", sreg, 0); |
8fc2e39e | 5226 | break; |
252b5132 | 5227 | } |
8fc2e39e | 5228 | used_at = 1; |
67c0d1eb RS |
5229 | set_at (sreg, 1); |
5230 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5231 | break; |
5232 | ||
5233 | case M_BLTL: | |
5234 | likely = 1; | |
5235 | case M_BLT: | |
5236 | if (treg == 0) | |
5237 | { | |
67c0d1eb | 5238 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", sreg); |
8fc2e39e | 5239 | break; |
252b5132 RH |
5240 | } |
5241 | if (sreg == 0) | |
5242 | { | |
67c0d1eb | 5243 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", treg); |
8fc2e39e | 5244 | break; |
252b5132 | 5245 | } |
8fc2e39e | 5246 | used_at = 1; |
67c0d1eb RS |
5247 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); |
5248 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5249 | break; |
5250 | ||
5251 | case M_BLTUL: | |
5252 | likely = 1; | |
5253 | case M_BLTU: | |
5254 | if (treg == 0) | |
5255 | goto do_false; | |
5256 | if (sreg == 0) | |
5257 | { | |
67c0d1eb | 5258 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 5259 | "s,t,p", 0, treg); |
8fc2e39e | 5260 | break; |
252b5132 | 5261 | } |
8fc2e39e | 5262 | used_at = 1; |
67c0d1eb RS |
5263 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); |
5264 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5265 | break; |
5266 | ||
5f74bc13 CD |
5267 | case M_DEXT: |
5268 | { | |
5269 | unsigned long pos; | |
5270 | unsigned long size; | |
5271 | ||
5272 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) | |
5273 | { | |
5274 | as_bad (_("Unsupported large constant")); | |
5275 | pos = size = 1; | |
5276 | } | |
5277 | else | |
5278 | { | |
5279 | pos = (unsigned long) imm_expr.X_add_number; | |
5280 | size = (unsigned long) imm2_expr.X_add_number; | |
5281 | } | |
5282 | ||
5283 | if (pos > 63) | |
5284 | { | |
5285 | as_bad (_("Improper position (%lu)"), pos); | |
5286 | pos = 1; | |
5287 | } | |
5288 | if (size == 0 || size > 64 | |
5289 | || (pos + size - 1) > 63) | |
5290 | { | |
5291 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
5292 | size, pos); | |
5293 | size = 1; | |
5294 | } | |
5295 | ||
5296 | if (size <= 32 && pos < 32) | |
5297 | { | |
5298 | s = "dext"; | |
5299 | fmt = "t,r,+A,+C"; | |
5300 | } | |
5301 | else if (size <= 32) | |
5302 | { | |
5303 | s = "dextu"; | |
5304 | fmt = "t,r,+E,+H"; | |
5305 | } | |
5306 | else | |
5307 | { | |
5308 | s = "dextm"; | |
5309 | fmt = "t,r,+A,+G"; | |
5310 | } | |
67c0d1eb | 5311 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, pos, size - 1); |
5f74bc13 | 5312 | } |
8fc2e39e | 5313 | break; |
5f74bc13 CD |
5314 | |
5315 | case M_DINS: | |
5316 | { | |
5317 | unsigned long pos; | |
5318 | unsigned long size; | |
5319 | ||
5320 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) | |
5321 | { | |
5322 | as_bad (_("Unsupported large constant")); | |
5323 | pos = size = 1; | |
5324 | } | |
5325 | else | |
5326 | { | |
5327 | pos = (unsigned long) imm_expr.X_add_number; | |
5328 | size = (unsigned long) imm2_expr.X_add_number; | |
5329 | } | |
5330 | ||
5331 | if (pos > 63) | |
5332 | { | |
5333 | as_bad (_("Improper position (%lu)"), pos); | |
5334 | pos = 1; | |
5335 | } | |
5336 | if (size == 0 || size > 64 | |
5337 | || (pos + size - 1) > 63) | |
5338 | { | |
5339 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
5340 | size, pos); | |
5341 | size = 1; | |
5342 | } | |
5343 | ||
5344 | if (pos < 32 && (pos + size - 1) < 32) | |
5345 | { | |
5346 | s = "dins"; | |
5347 | fmt = "t,r,+A,+B"; | |
5348 | } | |
5349 | else if (pos >= 32) | |
5350 | { | |
5351 | s = "dinsu"; | |
5352 | fmt = "t,r,+E,+F"; | |
5353 | } | |
5354 | else | |
5355 | { | |
5356 | s = "dinsm"; | |
5357 | fmt = "t,r,+A,+F"; | |
5358 | } | |
750bdd57 AS |
5359 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, (int) pos, |
5360 | (int) (pos + size - 1)); | |
5f74bc13 | 5361 | } |
8fc2e39e | 5362 | break; |
5f74bc13 | 5363 | |
252b5132 RH |
5364 | case M_DDIV_3: |
5365 | dbl = 1; | |
5366 | case M_DIV_3: | |
5367 | s = "mflo"; | |
5368 | goto do_div3; | |
5369 | case M_DREM_3: | |
5370 | dbl = 1; | |
5371 | case M_REM_3: | |
5372 | s = "mfhi"; | |
5373 | do_div3: | |
5374 | if (treg == 0) | |
5375 | { | |
5376 | as_warn (_("Divide by zero.")); | |
5377 | if (mips_trap) | |
67c0d1eb | 5378 | macro_build (NULL, "teq", "s,t,q", 0, 0, 7); |
252b5132 | 5379 | else |
67c0d1eb | 5380 | macro_build (NULL, "break", "c", 7); |
8fc2e39e | 5381 | break; |
252b5132 RH |
5382 | } |
5383 | ||
7d10b47d | 5384 | start_noreorder (); |
252b5132 RH |
5385 | if (mips_trap) |
5386 | { | |
67c0d1eb RS |
5387 | macro_build (NULL, "teq", "s,t,q", treg, 0, 7); |
5388 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); | |
252b5132 RH |
5389 | } |
5390 | else | |
5391 | { | |
5392 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5393 | macro_build (&expr1, "bne", "s,t,p", treg, 0); |
5394 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); | |
5395 | macro_build (NULL, "break", "c", 7); | |
252b5132 RH |
5396 | } |
5397 | expr1.X_add_number = -1; | |
8fc2e39e | 5398 | used_at = 1; |
f6a22291 | 5399 | load_register (AT, &expr1, dbl); |
252b5132 | 5400 | expr1.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); |
67c0d1eb | 5401 | macro_build (&expr1, "bne", "s,t,p", treg, AT); |
252b5132 RH |
5402 | if (dbl) |
5403 | { | |
5404 | expr1.X_add_number = 1; | |
f6a22291 | 5405 | load_register (AT, &expr1, dbl); |
67c0d1eb | 5406 | macro_build (NULL, "dsll32", "d,w,<", AT, AT, 31); |
252b5132 RH |
5407 | } |
5408 | else | |
5409 | { | |
5410 | expr1.X_add_number = 0x80000000; | |
67c0d1eb | 5411 | macro_build (&expr1, "lui", "t,u", AT, BFD_RELOC_HI16); |
252b5132 RH |
5412 | } |
5413 | if (mips_trap) | |
5414 | { | |
67c0d1eb | 5415 | macro_build (NULL, "teq", "s,t,q", sreg, AT, 6); |
252b5132 RH |
5416 | /* We want to close the noreorder block as soon as possible, so |
5417 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5418 | end_noreorder (); |
252b5132 RH |
5419 | } |
5420 | else | |
5421 | { | |
5422 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5423 | macro_build (&expr1, "bne", "s,t,p", sreg, AT); |
5424 | macro_build (NULL, "nop", "", 0); | |
252b5132 RH |
5425 | |
5426 | /* We want to close the noreorder block as soon as possible, so | |
5427 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5428 | end_noreorder (); |
252b5132 | 5429 | |
67c0d1eb | 5430 | macro_build (NULL, "break", "c", 6); |
252b5132 | 5431 | } |
67c0d1eb | 5432 | macro_build (NULL, s, "d", dreg); |
252b5132 RH |
5433 | break; |
5434 | ||
5435 | case M_DIV_3I: | |
5436 | s = "div"; | |
5437 | s2 = "mflo"; | |
5438 | goto do_divi; | |
5439 | case M_DIVU_3I: | |
5440 | s = "divu"; | |
5441 | s2 = "mflo"; | |
5442 | goto do_divi; | |
5443 | case M_REM_3I: | |
5444 | s = "div"; | |
5445 | s2 = "mfhi"; | |
5446 | goto do_divi; | |
5447 | case M_REMU_3I: | |
5448 | s = "divu"; | |
5449 | s2 = "mfhi"; | |
5450 | goto do_divi; | |
5451 | case M_DDIV_3I: | |
5452 | dbl = 1; | |
5453 | s = "ddiv"; | |
5454 | s2 = "mflo"; | |
5455 | goto do_divi; | |
5456 | case M_DDIVU_3I: | |
5457 | dbl = 1; | |
5458 | s = "ddivu"; | |
5459 | s2 = "mflo"; | |
5460 | goto do_divi; | |
5461 | case M_DREM_3I: | |
5462 | dbl = 1; | |
5463 | s = "ddiv"; | |
5464 | s2 = "mfhi"; | |
5465 | goto do_divi; | |
5466 | case M_DREMU_3I: | |
5467 | dbl = 1; | |
5468 | s = "ddivu"; | |
5469 | s2 = "mfhi"; | |
5470 | do_divi: | |
5471 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5472 | { | |
5473 | as_warn (_("Divide by zero.")); | |
5474 | if (mips_trap) | |
67c0d1eb | 5475 | macro_build (NULL, "teq", "s,t,q", 0, 0, 7); |
252b5132 | 5476 | else |
67c0d1eb | 5477 | macro_build (NULL, "break", "c", 7); |
8fc2e39e | 5478 | break; |
252b5132 RH |
5479 | } |
5480 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5481 | { | |
5482 | if (strcmp (s2, "mflo") == 0) | |
67c0d1eb | 5483 | move_register (dreg, sreg); |
252b5132 | 5484 | else |
67c0d1eb | 5485 | move_register (dreg, 0); |
8fc2e39e | 5486 | break; |
252b5132 RH |
5487 | } |
5488 | if (imm_expr.X_op == O_constant | |
5489 | && imm_expr.X_add_number == -1 | |
5490 | && s[strlen (s) - 1] != 'u') | |
5491 | { | |
5492 | if (strcmp (s2, "mflo") == 0) | |
5493 | { | |
67c0d1eb | 5494 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", dreg, sreg); |
252b5132 RH |
5495 | } |
5496 | else | |
67c0d1eb | 5497 | move_register (dreg, 0); |
8fc2e39e | 5498 | break; |
252b5132 RH |
5499 | } |
5500 | ||
8fc2e39e | 5501 | used_at = 1; |
67c0d1eb RS |
5502 | load_register (AT, &imm_expr, dbl); |
5503 | macro_build (NULL, s, "z,s,t", sreg, AT); | |
5504 | macro_build (NULL, s2, "d", dreg); | |
252b5132 RH |
5505 | break; |
5506 | ||
5507 | case M_DIVU_3: | |
5508 | s = "divu"; | |
5509 | s2 = "mflo"; | |
5510 | goto do_divu3; | |
5511 | case M_REMU_3: | |
5512 | s = "divu"; | |
5513 | s2 = "mfhi"; | |
5514 | goto do_divu3; | |
5515 | case M_DDIVU_3: | |
5516 | s = "ddivu"; | |
5517 | s2 = "mflo"; | |
5518 | goto do_divu3; | |
5519 | case M_DREMU_3: | |
5520 | s = "ddivu"; | |
5521 | s2 = "mfhi"; | |
5522 | do_divu3: | |
7d10b47d | 5523 | start_noreorder (); |
252b5132 RH |
5524 | if (mips_trap) |
5525 | { | |
67c0d1eb RS |
5526 | macro_build (NULL, "teq", "s,t,q", treg, 0, 7); |
5527 | macro_build (NULL, s, "z,s,t", sreg, treg); | |
252b5132 RH |
5528 | /* We want to close the noreorder block as soon as possible, so |
5529 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5530 | end_noreorder (); |
252b5132 RH |
5531 | } |
5532 | else | |
5533 | { | |
5534 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5535 | macro_build (&expr1, "bne", "s,t,p", treg, 0); |
5536 | macro_build (NULL, s, "z,s,t", sreg, treg); | |
252b5132 RH |
5537 | |
5538 | /* We want to close the noreorder block as soon as possible, so | |
5539 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5540 | end_noreorder (); |
67c0d1eb | 5541 | macro_build (NULL, "break", "c", 7); |
252b5132 | 5542 | } |
67c0d1eb | 5543 | macro_build (NULL, s2, "d", dreg); |
8fc2e39e | 5544 | break; |
252b5132 | 5545 | |
1abe91b1 MR |
5546 | case M_DLCA_AB: |
5547 | dbl = 1; | |
5548 | case M_LCA_AB: | |
5549 | call = 1; | |
5550 | goto do_la; | |
252b5132 RH |
5551 | case M_DLA_AB: |
5552 | dbl = 1; | |
5553 | case M_LA_AB: | |
1abe91b1 | 5554 | do_la: |
252b5132 RH |
5555 | /* Load the address of a symbol into a register. If breg is not |
5556 | zero, we then add a base register to it. */ | |
5557 | ||
3bec30a8 TS |
5558 | if (dbl && HAVE_32BIT_GPRS) |
5559 | as_warn (_("dla used to load 32-bit register")); | |
5560 | ||
c90bbe5b | 5561 | if (! dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
5562 | as_warn (_("la used to load 64-bit address")); |
5563 | ||
0c11417f MR |
5564 | if (offset_expr.X_op == O_constant |
5565 | && offset_expr.X_add_number >= -0x8000 | |
5566 | && offset_expr.X_add_number < 0x8000) | |
5567 | { | |
aed1a261 | 5568 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
17a2f251 | 5569 | "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 5570 | break; |
0c11417f MR |
5571 | } |
5572 | ||
741fe287 | 5573 | if (mips_opts.at && (treg == breg)) |
afdbd6d0 CD |
5574 | { |
5575 | tempreg = AT; | |
5576 | used_at = 1; | |
5577 | } | |
5578 | else | |
5579 | { | |
5580 | tempreg = treg; | |
afdbd6d0 CD |
5581 | } |
5582 | ||
252b5132 RH |
5583 | if (offset_expr.X_op != O_symbol |
5584 | && offset_expr.X_op != O_constant) | |
5585 | { | |
5586 | as_bad (_("expression too complex")); | |
5587 | offset_expr.X_op = O_constant; | |
5588 | } | |
5589 | ||
252b5132 | 5590 | if (offset_expr.X_op == O_constant) |
aed1a261 | 5591 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
5592 | else if (mips_pic == NO_PIC) |
5593 | { | |
d6bc6245 | 5594 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 5595 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
5596 | Otherwise we want |
5597 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5598 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5599 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 5600 | so we may as well always use the latter form. |
76b3015f | 5601 | |
6caf9ef4 TS |
5602 | With 64bit address space and a usable $at we want |
5603 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5604 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5605 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5606 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
5607 | dsll32 $tempreg,0 | |
5608 | daddu $tempreg,$tempreg,$at | |
5609 | ||
5610 | If $at is already in use, we use a path which is suboptimal | |
5611 | on superscalar processors. | |
5612 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5613 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5614 | dsll $tempreg,16 | |
5615 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5616 | dsll $tempreg,16 | |
5617 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
5618 | ||
5619 | For GP relative symbols in 64bit address space we can use | |
5620 | the same sequence as in 32bit address space. */ | |
aed1a261 | 5621 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 5622 | { |
6caf9ef4 TS |
5623 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
5624 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
5625 | { | |
5626 | relax_start (offset_expr.X_add_symbol); | |
5627 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
5628 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
5629 | relax_switch (); | |
5630 | } | |
d6bc6245 | 5631 | |
741fe287 | 5632 | if (used_at == 0 && mips_opts.at) |
98d3f06f | 5633 | { |
67c0d1eb | 5634 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5635 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 5636 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5637 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 5638 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5639 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 5640 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5641 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb RS |
5642 | macro_build (NULL, "dsll32", "d,w,<", tempreg, tempreg, 0); |
5643 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); | |
98d3f06f KH |
5644 | used_at = 1; |
5645 | } | |
5646 | else | |
5647 | { | |
67c0d1eb | 5648 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5649 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 5650 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5651 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb RS |
5652 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); |
5653 | macro_build (&offset_expr, "daddiu", "t,r,j", | |
17a2f251 | 5654 | tempreg, tempreg, BFD_RELOC_HI16_S); |
67c0d1eb RS |
5655 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); |
5656 | macro_build (&offset_expr, "daddiu", "t,r,j", | |
17a2f251 | 5657 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 5658 | } |
6caf9ef4 TS |
5659 | |
5660 | if (mips_relax.sequence) | |
5661 | relax_end (); | |
98d3f06f KH |
5662 | } |
5663 | else | |
5664 | { | |
5665 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 5666 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 5667 | { |
4d7206a2 | 5668 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5669 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5670 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 5671 | relax_switch (); |
98d3f06f | 5672 | } |
6943caf0 ILT |
5673 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
5674 | as_bad (_("offset too large")); | |
67c0d1eb RS |
5675 | macro_build_lui (&offset_expr, tempreg); |
5676 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
5677 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
5678 | if (mips_relax.sequence) |
5679 | relax_end (); | |
98d3f06f | 5680 | } |
252b5132 | 5681 | } |
0a44bf69 | 5682 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 5683 | { |
9117d219 NC |
5684 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
5685 | ||
252b5132 RH |
5686 | /* If this is a reference to an external symbol, and there |
5687 | is no constant, we want | |
5688 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 5689 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 5690 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
5691 | For a local symbol, we want |
5692 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5693 | nop | |
5694 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5695 | ||
5696 | If we have a small constant, and this is a reference to | |
5697 | an external symbol, we want | |
5698 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5699 | nop | |
5700 | addiu $tempreg,$tempreg,<constant> | |
5701 | For a local symbol, we want the same instruction | |
5702 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
5703 | addiu instruction. | |
5704 | ||
5705 | If we have a large constant, and this is a reference to | |
5706 | an external symbol, we want | |
5707 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5708 | lui $at,<hiconstant> | |
5709 | addiu $at,$at,<loconstant> | |
5710 | addu $tempreg,$tempreg,$at | |
5711 | For a local symbol, we want the same instruction | |
5712 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 5713 | addiu instruction. |
ed6fb7bd SC |
5714 | */ |
5715 | ||
4d7206a2 | 5716 | if (offset_expr.X_add_number == 0) |
252b5132 | 5717 | { |
0a44bf69 RS |
5718 | if (mips_pic == SVR4_PIC |
5719 | && breg == 0 | |
5720 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
5721 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
5722 | ||
5723 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
5724 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5725 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 5726 | if (breg != 0) |
252b5132 RH |
5727 | { |
5728 | /* We're going to put in an addu instruction using | |
5729 | tempreg, so we may as well insert the nop right | |
5730 | now. */ | |
269137b2 | 5731 | load_delay_nop (); |
252b5132 | 5732 | } |
4d7206a2 | 5733 | relax_switch (); |
67c0d1eb RS |
5734 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5735 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 5736 | load_delay_nop (); |
67c0d1eb RS |
5737 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5738 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 5739 | relax_end (); |
252b5132 RH |
5740 | /* FIXME: If breg == 0, and the next instruction uses |
5741 | $tempreg, then if this variant case is used an extra | |
5742 | nop will be generated. */ | |
5743 | } | |
4d7206a2 RS |
5744 | else if (offset_expr.X_add_number >= -0x8000 |
5745 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 5746 | { |
67c0d1eb | 5747 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 5748 | load_delay_nop (); |
67c0d1eb | 5749 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
5750 | } |
5751 | else | |
5752 | { | |
4d7206a2 RS |
5753 | expr1.X_add_number = offset_expr.X_add_number; |
5754 | offset_expr.X_add_number = | |
5755 | ((offset_expr.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
67c0d1eb | 5756 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 5757 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
5758 | /* If we are going to add in a base register, and the |
5759 | target register and the base register are the same, | |
5760 | then we are using AT as a temporary register. Since | |
5761 | we want to load the constant into AT, we add our | |
5762 | current AT (from the global offset table) and the | |
5763 | register into the register now, and pretend we were | |
5764 | not using a base register. */ | |
67c0d1eb | 5765 | if (breg == treg) |
252b5132 | 5766 | { |
269137b2 | 5767 | load_delay_nop (); |
67c0d1eb | 5768 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5769 | treg, AT, breg); |
252b5132 RH |
5770 | breg = 0; |
5771 | tempreg = treg; | |
252b5132 | 5772 | } |
f6a22291 | 5773 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
5774 | used_at = 1; |
5775 | } | |
5776 | } | |
0a44bf69 | 5777 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 5778 | { |
67c0d1eb | 5779 | int add_breg_early = 0; |
f5040a92 AO |
5780 | |
5781 | /* If this is a reference to an external, and there is no | |
5782 | constant, or local symbol (*), with or without a | |
5783 | constant, we want | |
5784 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 5785 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
5786 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
5787 | ||
5788 | If we have a small constant, and this is a reference to | |
5789 | an external symbol, we want | |
5790 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5791 | addiu $tempreg,$tempreg,<constant> | |
5792 | ||
5793 | If we have a large constant, and this is a reference to | |
5794 | an external symbol, we want | |
5795 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5796 | lui $at,<hiconstant> | |
5797 | addiu $at,$at,<loconstant> | |
5798 | addu $tempreg,$tempreg,$at | |
5799 | ||
5800 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
5801 | local symbols, even though it introduces an additional | |
5802 | instruction. */ | |
5803 | ||
f5040a92 AO |
5804 | if (offset_expr.X_add_number) |
5805 | { | |
4d7206a2 | 5806 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
5807 | offset_expr.X_add_number = 0; |
5808 | ||
4d7206a2 | 5809 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5810 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5811 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5812 | |
5813 | if (expr1.X_add_number >= -0x8000 | |
5814 | && expr1.X_add_number < 0x8000) | |
5815 | { | |
67c0d1eb RS |
5816 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
5817 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 5818 | } |
ecd13cd3 | 5819 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 5820 | { |
f5040a92 AO |
5821 | /* If we are going to add in a base register, and the |
5822 | target register and the base register are the same, | |
5823 | then we are using AT as a temporary register. Since | |
5824 | we want to load the constant into AT, we add our | |
5825 | current AT (from the global offset table) and the | |
5826 | register into the register now, and pretend we were | |
5827 | not using a base register. */ | |
5828 | if (breg != treg) | |
5829 | dreg = tempreg; | |
5830 | else | |
5831 | { | |
9c2799c2 | 5832 | gas_assert (tempreg == AT); |
67c0d1eb RS |
5833 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5834 | treg, AT, breg); | |
f5040a92 | 5835 | dreg = treg; |
67c0d1eb | 5836 | add_breg_early = 1; |
f5040a92 AO |
5837 | } |
5838 | ||
f6a22291 | 5839 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 5840 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5841 | dreg, dreg, AT); |
f5040a92 | 5842 | |
f5040a92 AO |
5843 | used_at = 1; |
5844 | } | |
5845 | else | |
5846 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
5847 | ||
4d7206a2 | 5848 | relax_switch (); |
f5040a92 AO |
5849 | offset_expr.X_add_number = expr1.X_add_number; |
5850 | ||
67c0d1eb RS |
5851 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5852 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
5853 | if (add_breg_early) | |
f5040a92 | 5854 | { |
67c0d1eb | 5855 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
f899b4b8 | 5856 | treg, tempreg, breg); |
f5040a92 AO |
5857 | breg = 0; |
5858 | tempreg = treg; | |
5859 | } | |
4d7206a2 | 5860 | relax_end (); |
f5040a92 | 5861 | } |
4d7206a2 | 5862 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 5863 | { |
4d7206a2 | 5864 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5865 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5866 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 5867 | relax_switch (); |
67c0d1eb RS |
5868 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5869 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 5870 | relax_end (); |
f5040a92 | 5871 | } |
4d7206a2 | 5872 | else |
f5040a92 | 5873 | { |
67c0d1eb RS |
5874 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5875 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5876 | } |
5877 | } | |
0a44bf69 | 5878 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 5879 | { |
67c0d1eb | 5880 | int gpdelay; |
9117d219 NC |
5881 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
5882 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 5883 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
5884 | |
5885 | /* This is the large GOT case. If this is a reference to an | |
5886 | external symbol, and there is no constant, we want | |
5887 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5888 | addu $tempreg,$tempreg,$gp | |
5889 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 5890 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
5891 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
5892 | addu $tempreg,$tempreg,$gp | |
5893 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
5894 | For a local symbol, we want |
5895 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5896 | nop | |
5897 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5898 | ||
5899 | If we have a small constant, and this is a reference to | |
5900 | an external symbol, we want | |
5901 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5902 | addu $tempreg,$tempreg,$gp | |
5903 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5904 | nop | |
5905 | addiu $tempreg,$tempreg,<constant> | |
5906 | For a local symbol, we want | |
5907 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5908 | nop | |
5909 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
5910 | ||
5911 | If we have a large constant, and this is a reference to | |
5912 | an external symbol, we want | |
5913 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5914 | addu $tempreg,$tempreg,$gp | |
5915 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5916 | lui $at,<hiconstant> | |
5917 | addiu $at,$at,<loconstant> | |
5918 | addu $tempreg,$tempreg,$at | |
5919 | For a local symbol, we want | |
5920 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5921 | lui $at,<hiconstant> | |
5922 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
5923 | addu $tempreg,$tempreg,$at | |
f5040a92 | 5924 | */ |
438c16b8 | 5925 | |
252b5132 RH |
5926 | expr1.X_add_number = offset_expr.X_add_number; |
5927 | offset_expr.X_add_number = 0; | |
4d7206a2 | 5928 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 5929 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
5930 | if (expr1.X_add_number == 0 && breg == 0 |
5931 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
5932 | { |
5933 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
5934 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
5935 | } | |
67c0d1eb RS |
5936 | macro_build (&offset_expr, "lui", "t,u", tempreg, lui_reloc_type); |
5937 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 5938 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 5939 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 5940 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
5941 | if (expr1.X_add_number == 0) |
5942 | { | |
67c0d1eb | 5943 | if (breg != 0) |
252b5132 RH |
5944 | { |
5945 | /* We're going to put in an addu instruction using | |
5946 | tempreg, so we may as well insert the nop right | |
5947 | now. */ | |
269137b2 | 5948 | load_delay_nop (); |
252b5132 | 5949 | } |
252b5132 RH |
5950 | } |
5951 | else if (expr1.X_add_number >= -0x8000 | |
5952 | && expr1.X_add_number < 0x8000) | |
5953 | { | |
269137b2 | 5954 | load_delay_nop (); |
67c0d1eb | 5955 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5956 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
5957 | } |
5958 | else | |
5959 | { | |
252b5132 RH |
5960 | /* If we are going to add in a base register, and the |
5961 | target register and the base register are the same, | |
5962 | then we are using AT as a temporary register. Since | |
5963 | we want to load the constant into AT, we add our | |
5964 | current AT (from the global offset table) and the | |
5965 | register into the register now, and pretend we were | |
5966 | not using a base register. */ | |
5967 | if (breg != treg) | |
67c0d1eb | 5968 | dreg = tempreg; |
252b5132 RH |
5969 | else |
5970 | { | |
9c2799c2 | 5971 | gas_assert (tempreg == AT); |
269137b2 | 5972 | load_delay_nop (); |
67c0d1eb | 5973 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5974 | treg, AT, breg); |
252b5132 | 5975 | dreg = treg; |
252b5132 RH |
5976 | } |
5977 | ||
f6a22291 | 5978 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 5979 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 5980 | |
252b5132 RH |
5981 | used_at = 1; |
5982 | } | |
4d7206a2 RS |
5983 | offset_expr.X_add_number = |
5984 | ((expr1.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
5985 | relax_switch (); | |
252b5132 | 5986 | |
67c0d1eb | 5987 | if (gpdelay) |
252b5132 RH |
5988 | { |
5989 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 5990 | the first instruction on the main stream does not. */ |
67c0d1eb | 5991 | macro_build (NULL, "nop", ""); |
252b5132 | 5992 | } |
ed6fb7bd | 5993 | |
67c0d1eb RS |
5994 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5995 | local_reloc_type, mips_gp_register); | |
f5040a92 | 5996 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
5997 | && expr1.X_add_number < 0x8000) |
5998 | { | |
269137b2 | 5999 | load_delay_nop (); |
67c0d1eb RS |
6000 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
6001 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 6002 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
6003 | register, the external symbol case ended with a load, |
6004 | so if the symbol turns out to not be external, and | |
6005 | the next instruction uses tempreg, an unnecessary nop | |
6006 | will be inserted. */ | |
252b5132 RH |
6007 | } |
6008 | else | |
6009 | { | |
6010 | if (breg == treg) | |
6011 | { | |
6012 | /* We must add in the base register now, as in the | |
f5040a92 | 6013 | external symbol case. */ |
9c2799c2 | 6014 | gas_assert (tempreg == AT); |
269137b2 | 6015 | load_delay_nop (); |
67c0d1eb | 6016 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6017 | treg, AT, breg); |
252b5132 RH |
6018 | tempreg = treg; |
6019 | /* We set breg to 0 because we have arranged to add | |
f5040a92 | 6020 | it in in both cases. */ |
252b5132 RH |
6021 | breg = 0; |
6022 | } | |
6023 | ||
67c0d1eb RS |
6024 | macro_build_lui (&expr1, AT); |
6025 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 6026 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 6027 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6028 | tempreg, tempreg, AT); |
8fc2e39e | 6029 | used_at = 1; |
252b5132 | 6030 | } |
4d7206a2 | 6031 | relax_end (); |
252b5132 | 6032 | } |
0a44bf69 | 6033 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 6034 | { |
f5040a92 AO |
6035 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
6036 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 6037 | int add_breg_early = 0; |
f5040a92 AO |
6038 | |
6039 | /* This is the large GOT case. If this is a reference to an | |
6040 | external symbol, and there is no constant, we want | |
6041 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6042 | add $tempreg,$tempreg,$gp | |
6043 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 6044 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
6045 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
6046 | add $tempreg,$tempreg,$gp | |
6047 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
6048 | ||
6049 | If we have a small constant, and this is a reference to | |
6050 | an external symbol, we want | |
6051 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6052 | add $tempreg,$tempreg,$gp | |
6053 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6054 | addi $tempreg,$tempreg,<constant> | |
6055 | ||
6056 | If we have a large constant, and this is a reference to | |
6057 | an external symbol, we want | |
6058 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6059 | addu $tempreg,$tempreg,$gp | |
6060 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6061 | lui $at,<hiconstant> | |
6062 | addi $at,$at,<loconstant> | |
6063 | add $tempreg,$tempreg,$at | |
6064 | ||
6065 | If we have NewABI, and we know it's a local symbol, we want | |
6066 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6067 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
6068 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
6069 | ||
4d7206a2 | 6070 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 6071 | |
4d7206a2 | 6072 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
6073 | offset_expr.X_add_number = 0; |
6074 | ||
1abe91b1 MR |
6075 | if (expr1.X_add_number == 0 && breg == 0 |
6076 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
6077 | { |
6078 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
6079 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
6080 | } | |
67c0d1eb RS |
6081 | macro_build (&offset_expr, "lui", "t,u", tempreg, lui_reloc_type); |
6082 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 6083 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
6084 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6085 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
6086 | |
6087 | if (expr1.X_add_number == 0) | |
4d7206a2 | 6088 | ; |
f5040a92 AO |
6089 | else if (expr1.X_add_number >= -0x8000 |
6090 | && expr1.X_add_number < 0x8000) | |
6091 | { | |
67c0d1eb | 6092 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 6093 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 6094 | } |
ecd13cd3 | 6095 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 6096 | { |
f5040a92 AO |
6097 | /* If we are going to add in a base register, and the |
6098 | target register and the base register are the same, | |
6099 | then we are using AT as a temporary register. Since | |
6100 | we want to load the constant into AT, we add our | |
6101 | current AT (from the global offset table) and the | |
6102 | register into the register now, and pretend we were | |
6103 | not using a base register. */ | |
6104 | if (breg != treg) | |
6105 | dreg = tempreg; | |
6106 | else | |
6107 | { | |
9c2799c2 | 6108 | gas_assert (tempreg == AT); |
67c0d1eb | 6109 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6110 | treg, AT, breg); |
f5040a92 | 6111 | dreg = treg; |
67c0d1eb | 6112 | add_breg_early = 1; |
f5040a92 AO |
6113 | } |
6114 | ||
f6a22291 | 6115 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 6116 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 6117 | |
f5040a92 AO |
6118 | used_at = 1; |
6119 | } | |
6120 | else | |
6121 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
6122 | ||
4d7206a2 | 6123 | relax_switch (); |
f5040a92 | 6124 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
6125 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6126 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
6127 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
6128 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
6129 | if (add_breg_early) | |
f5040a92 | 6130 | { |
67c0d1eb | 6131 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6132 | treg, tempreg, breg); |
f5040a92 AO |
6133 | breg = 0; |
6134 | tempreg = treg; | |
6135 | } | |
4d7206a2 | 6136 | relax_end (); |
f5040a92 | 6137 | } |
252b5132 RH |
6138 | else |
6139 | abort (); | |
6140 | ||
6141 | if (breg != 0) | |
aed1a261 | 6142 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", treg, tempreg, breg); |
252b5132 RH |
6143 | break; |
6144 | ||
52b6b6b9 JM |
6145 | case M_MSGSND: |
6146 | { | |
6147 | unsigned long temp = (treg << 16) | (0x01); | |
6148 | macro_build (NULL, "c2", "C", temp); | |
6149 | } | |
6150 | /* AT is not used, just return */ | |
6151 | return; | |
6152 | ||
6153 | case M_MSGLD: | |
6154 | { | |
6155 | unsigned long temp = (0x02); | |
6156 | macro_build (NULL, "c2", "C", temp); | |
6157 | } | |
6158 | /* AT is not used, just return */ | |
6159 | return; | |
6160 | ||
6161 | case M_MSGLD_T: | |
6162 | { | |
6163 | unsigned long temp = (treg << 16) | (0x02); | |
6164 | macro_build (NULL, "c2", "C", temp); | |
6165 | } | |
6166 | /* AT is not used, just return */ | |
6167 | return; | |
6168 | ||
6169 | case M_MSGWAIT: | |
6170 | macro_build (NULL, "c2", "C", 3); | |
6171 | /* AT is not used, just return */ | |
6172 | return; | |
6173 | ||
6174 | case M_MSGWAIT_T: | |
6175 | { | |
6176 | unsigned long temp = (treg << 16) | 0x03; | |
6177 | macro_build (NULL, "c2", "C", temp); | |
6178 | } | |
6179 | /* AT is not used, just return */ | |
6180 | return; | |
6181 | ||
252b5132 RH |
6182 | case M_J_A: |
6183 | /* The j instruction may not be used in PIC code, since it | |
6184 | requires an absolute address. We convert it to a b | |
6185 | instruction. */ | |
6186 | if (mips_pic == NO_PIC) | |
67c0d1eb | 6187 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 6188 | else |
67c0d1eb | 6189 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 6190 | break; |
252b5132 RH |
6191 | |
6192 | /* The jal instructions must be handled as macros because when | |
6193 | generating PIC code they expand to multi-instruction | |
6194 | sequences. Normally they are simple instructions. */ | |
6195 | case M_JAL_1: | |
6196 | dreg = RA; | |
6197 | /* Fall through. */ | |
6198 | case M_JAL_2: | |
3e722fb5 | 6199 | if (mips_pic == NO_PIC) |
67c0d1eb | 6200 | macro_build (NULL, "jalr", "d,s", dreg, sreg); |
0a44bf69 | 6201 | else |
252b5132 RH |
6202 | { |
6203 | if (sreg != PIC_CALL_REG) | |
6204 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 6205 | |
67c0d1eb | 6206 | macro_build (NULL, "jalr", "d,s", dreg, sreg); |
0a44bf69 | 6207 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 6208 | { |
6478892d TS |
6209 | if (mips_cprestore_offset < 0) |
6210 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6211 | else | |
6212 | { | |
7a621144 DJ |
6213 | if (! mips_frame_reg_valid) |
6214 | { | |
6215 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
6216 | /* Quiet this warning. */ | |
6217 | mips_frame_reg_valid = 1; | |
6218 | } | |
6219 | if (! mips_cprestore_valid) | |
6220 | { | |
6221 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6222 | /* Quiet this warning. */ | |
6223 | mips_cprestore_valid = 1; | |
6224 | } | |
d3fca0b5 MR |
6225 | if (mips_opts.noreorder) |
6226 | macro_build (NULL, "nop", ""); | |
6478892d | 6227 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 6228 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 6229 | mips_gp_register, |
256ab948 TS |
6230 | mips_frame_reg, |
6231 | HAVE_64BIT_ADDRESSES); | |
6478892d | 6232 | } |
252b5132 RH |
6233 | } |
6234 | } | |
252b5132 | 6235 | |
8fc2e39e | 6236 | break; |
252b5132 RH |
6237 | |
6238 | case M_JAL_A: | |
6239 | if (mips_pic == NO_PIC) | |
67c0d1eb | 6240 | macro_build (&offset_expr, "jal", "a"); |
252b5132 RH |
6241 | else if (mips_pic == SVR4_PIC) |
6242 | { | |
6243 | /* If this is a reference to an external symbol, and we are | |
6244 | using a small GOT, we want | |
6245 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
6246 | nop | |
f9419b05 | 6247 | jalr $ra,$25 |
252b5132 RH |
6248 | nop |
6249 | lw $gp,cprestore($sp) | |
6250 | The cprestore value is set using the .cprestore | |
6251 | pseudo-op. If we are using a big GOT, we want | |
6252 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
6253 | addu $25,$25,$gp | |
6254 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
6255 | nop | |
f9419b05 | 6256 | jalr $ra,$25 |
252b5132 RH |
6257 | nop |
6258 | lw $gp,cprestore($sp) | |
6259 | If the symbol is not external, we want | |
6260 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6261 | nop | |
6262 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 6263 | jalr $ra,$25 |
252b5132 | 6264 | nop |
438c16b8 | 6265 | lw $gp,cprestore($sp) |
f5040a92 AO |
6266 | |
6267 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
6268 | sequences above, minus nops, unless the symbol is local, | |
6269 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
6270 | GOT_DISP. */ | |
438c16b8 | 6271 | if (HAVE_NEWABI) |
252b5132 | 6272 | { |
f5040a92 AO |
6273 | if (! mips_big_got) |
6274 | { | |
4d7206a2 | 6275 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6276 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6277 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 6278 | mips_gp_register); |
4d7206a2 | 6279 | relax_switch (); |
67c0d1eb RS |
6280 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6281 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
6282 | mips_gp_register); |
6283 | relax_end (); | |
f5040a92 AO |
6284 | } |
6285 | else | |
6286 | { | |
4d7206a2 | 6287 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6288 | macro_build (&offset_expr, "lui", "t,u", PIC_CALL_REG, |
6289 | BFD_RELOC_MIPS_CALL_HI16); | |
6290 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
6291 | PIC_CALL_REG, mips_gp_register); | |
6292 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
6293 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
6294 | PIC_CALL_REG); | |
4d7206a2 | 6295 | relax_switch (); |
67c0d1eb RS |
6296 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6297 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
6298 | mips_gp_register); | |
6299 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
6300 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 6301 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 6302 | relax_end (); |
f5040a92 | 6303 | } |
684022ea | 6304 | |
67c0d1eb | 6305 | macro_build_jalr (&offset_expr); |
252b5132 RH |
6306 | } |
6307 | else | |
6308 | { | |
4d7206a2 | 6309 | relax_start (offset_expr.X_add_symbol); |
438c16b8 TS |
6310 | if (! mips_big_got) |
6311 | { | |
67c0d1eb RS |
6312 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6313 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 6314 | mips_gp_register); |
269137b2 | 6315 | load_delay_nop (); |
4d7206a2 | 6316 | relax_switch (); |
438c16b8 | 6317 | } |
252b5132 | 6318 | else |
252b5132 | 6319 | { |
67c0d1eb RS |
6320 | int gpdelay; |
6321 | ||
6322 | gpdelay = reg_needs_delay (mips_gp_register); | |
6323 | macro_build (&offset_expr, "lui", "t,u", PIC_CALL_REG, | |
6324 | BFD_RELOC_MIPS_CALL_HI16); | |
6325 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
6326 | PIC_CALL_REG, mips_gp_register); | |
6327 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
6328 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
6329 | PIC_CALL_REG); | |
269137b2 | 6330 | load_delay_nop (); |
4d7206a2 | 6331 | relax_switch (); |
67c0d1eb RS |
6332 | if (gpdelay) |
6333 | macro_build (NULL, "nop", ""); | |
252b5132 | 6334 | } |
67c0d1eb RS |
6335 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6336 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 6337 | mips_gp_register); |
269137b2 | 6338 | load_delay_nop (); |
67c0d1eb RS |
6339 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
6340 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 6341 | relax_end (); |
67c0d1eb | 6342 | macro_build_jalr (&offset_expr); |
438c16b8 | 6343 | |
6478892d TS |
6344 | if (mips_cprestore_offset < 0) |
6345 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6346 | else | |
6347 | { | |
7a621144 DJ |
6348 | if (! mips_frame_reg_valid) |
6349 | { | |
6350 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
6351 | /* Quiet this warning. */ | |
6352 | mips_frame_reg_valid = 1; | |
6353 | } | |
6354 | if (! mips_cprestore_valid) | |
6355 | { | |
6356 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6357 | /* Quiet this warning. */ | |
6358 | mips_cprestore_valid = 1; | |
6359 | } | |
6478892d | 6360 | if (mips_opts.noreorder) |
67c0d1eb | 6361 | macro_build (NULL, "nop", ""); |
6478892d | 6362 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 6363 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 6364 | mips_gp_register, |
256ab948 TS |
6365 | mips_frame_reg, |
6366 | HAVE_64BIT_ADDRESSES); | |
6478892d | 6367 | } |
252b5132 RH |
6368 | } |
6369 | } | |
0a44bf69 RS |
6370 | else if (mips_pic == VXWORKS_PIC) |
6371 | as_bad (_("Non-PIC jump used in PIC library")); | |
252b5132 RH |
6372 | else |
6373 | abort (); | |
6374 | ||
8fc2e39e | 6375 | break; |
252b5132 RH |
6376 | |
6377 | case M_LB_AB: | |
6378 | s = "lb"; | |
6379 | goto ld; | |
6380 | case M_LBU_AB: | |
6381 | s = "lbu"; | |
6382 | goto ld; | |
6383 | case M_LH_AB: | |
6384 | s = "lh"; | |
6385 | goto ld; | |
6386 | case M_LHU_AB: | |
6387 | s = "lhu"; | |
6388 | goto ld; | |
6389 | case M_LW_AB: | |
6390 | s = "lw"; | |
6391 | goto ld; | |
6392 | case M_LWC0_AB: | |
6393 | s = "lwc0"; | |
bdaaa2e1 | 6394 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6395 | coproc = 1; |
6396 | goto ld; | |
6397 | case M_LWC1_AB: | |
6398 | s = "lwc1"; | |
bdaaa2e1 | 6399 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6400 | coproc = 1; |
6401 | goto ld; | |
6402 | case M_LWC2_AB: | |
6403 | s = "lwc2"; | |
bdaaa2e1 | 6404 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6405 | coproc = 1; |
6406 | goto ld; | |
6407 | case M_LWC3_AB: | |
6408 | s = "lwc3"; | |
bdaaa2e1 | 6409 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6410 | coproc = 1; |
6411 | goto ld; | |
6412 | case M_LWL_AB: | |
6413 | s = "lwl"; | |
6414 | lr = 1; | |
6415 | goto ld; | |
6416 | case M_LWR_AB: | |
6417 | s = "lwr"; | |
6418 | lr = 1; | |
6419 | goto ld; | |
6420 | case M_LDC1_AB: | |
252b5132 | 6421 | s = "ldc1"; |
bdaaa2e1 | 6422 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6423 | coproc = 1; |
6424 | goto ld; | |
6425 | case M_LDC2_AB: | |
6426 | s = "ldc2"; | |
bdaaa2e1 | 6427 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6428 | coproc = 1; |
6429 | goto ld; | |
6430 | case M_LDC3_AB: | |
6431 | s = "ldc3"; | |
bdaaa2e1 | 6432 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6433 | coproc = 1; |
6434 | goto ld; | |
6435 | case M_LDL_AB: | |
6436 | s = "ldl"; | |
6437 | lr = 1; | |
6438 | goto ld; | |
6439 | case M_LDR_AB: | |
6440 | s = "ldr"; | |
6441 | lr = 1; | |
6442 | goto ld; | |
6443 | case M_LL_AB: | |
6444 | s = "ll"; | |
6445 | goto ld; | |
6446 | case M_LLD_AB: | |
6447 | s = "lld"; | |
6448 | goto ld; | |
6449 | case M_LWU_AB: | |
6450 | s = "lwu"; | |
6451 | ld: | |
8fc2e39e | 6452 | if (breg == treg || coproc || lr) |
252b5132 RH |
6453 | { |
6454 | tempreg = AT; | |
6455 | used_at = 1; | |
6456 | } | |
6457 | else | |
6458 | { | |
6459 | tempreg = treg; | |
252b5132 RH |
6460 | } |
6461 | goto ld_st; | |
6462 | case M_SB_AB: | |
6463 | s = "sb"; | |
6464 | goto st; | |
6465 | case M_SH_AB: | |
6466 | s = "sh"; | |
6467 | goto st; | |
6468 | case M_SW_AB: | |
6469 | s = "sw"; | |
6470 | goto st; | |
6471 | case M_SWC0_AB: | |
6472 | s = "swc0"; | |
bdaaa2e1 | 6473 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6474 | coproc = 1; |
6475 | goto st; | |
6476 | case M_SWC1_AB: | |
6477 | s = "swc1"; | |
bdaaa2e1 | 6478 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6479 | coproc = 1; |
6480 | goto st; | |
6481 | case M_SWC2_AB: | |
6482 | s = "swc2"; | |
bdaaa2e1 | 6483 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6484 | coproc = 1; |
6485 | goto st; | |
6486 | case M_SWC3_AB: | |
6487 | s = "swc3"; | |
bdaaa2e1 | 6488 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6489 | coproc = 1; |
6490 | goto st; | |
6491 | case M_SWL_AB: | |
6492 | s = "swl"; | |
6493 | goto st; | |
6494 | case M_SWR_AB: | |
6495 | s = "swr"; | |
6496 | goto st; | |
6497 | case M_SC_AB: | |
6498 | s = "sc"; | |
6499 | goto st; | |
6500 | case M_SCD_AB: | |
6501 | s = "scd"; | |
6502 | goto st; | |
d43b4baf TS |
6503 | case M_CACHE_AB: |
6504 | s = "cache"; | |
6505 | goto st; | |
252b5132 | 6506 | case M_SDC1_AB: |
252b5132 RH |
6507 | s = "sdc1"; |
6508 | coproc = 1; | |
bdaaa2e1 | 6509 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6510 | goto st; |
6511 | case M_SDC2_AB: | |
6512 | s = "sdc2"; | |
bdaaa2e1 | 6513 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6514 | coproc = 1; |
6515 | goto st; | |
6516 | case M_SDC3_AB: | |
6517 | s = "sdc3"; | |
bdaaa2e1 | 6518 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6519 | coproc = 1; |
6520 | goto st; | |
6521 | case M_SDL_AB: | |
6522 | s = "sdl"; | |
6523 | goto st; | |
6524 | case M_SDR_AB: | |
6525 | s = "sdr"; | |
6526 | st: | |
8fc2e39e TS |
6527 | tempreg = AT; |
6528 | used_at = 1; | |
252b5132 | 6529 | ld_st: |
b19e8a9b AN |
6530 | if (coproc |
6531 | && NO_ISA_COP (mips_opts.arch) | |
6532 | && (ip->insn_mo->pinfo2 & (INSN2_M_FP_S | INSN2_M_FP_D)) == 0) | |
6533 | { | |
6534 | as_bad (_("opcode not supported on this processor: %s"), | |
6535 | mips_cpu_info_from_arch (mips_opts.arch)->name); | |
6536 | break; | |
6537 | } | |
6538 | ||
bdaaa2e1 | 6539 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6540 | if (mask == M_LWC1_AB |
6541 | || mask == M_SWC1_AB | |
6542 | || mask == M_LDC1_AB | |
6543 | || mask == M_SDC1_AB | |
6544 | || mask == M_L_DAB | |
6545 | || mask == M_S_DAB) | |
6546 | fmt = "T,o(b)"; | |
d43b4baf TS |
6547 | else if (mask == M_CACHE_AB) |
6548 | fmt = "k,o(b)"; | |
252b5132 RH |
6549 | else if (coproc) |
6550 | fmt = "E,o(b)"; | |
6551 | else | |
6552 | fmt = "t,o(b)"; | |
6553 | ||
6554 | if (offset_expr.X_op != O_constant | |
6555 | && offset_expr.X_op != O_symbol) | |
6556 | { | |
6557 | as_bad (_("expression too complex")); | |
6558 | offset_expr.X_op = O_constant; | |
6559 | } | |
6560 | ||
2051e8c4 MR |
6561 | if (HAVE_32BIT_ADDRESSES |
6562 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
6563 | { |
6564 | char value [32]; | |
6565 | ||
6566 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 6567 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 6568 | } |
2051e8c4 | 6569 | |
252b5132 RH |
6570 | /* A constant expression in PIC code can be handled just as it |
6571 | is in non PIC code. */ | |
aed1a261 RS |
6572 | if (offset_expr.X_op == O_constant) |
6573 | { | |
aed1a261 RS |
6574 | expr1.X_add_number = ((offset_expr.X_add_number + 0x8000) |
6575 | & ~(bfd_vma) 0xffff); | |
2051e8c4 | 6576 | normalize_address_expr (&expr1); |
aed1a261 RS |
6577 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
6578 | if (breg != 0) | |
6579 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
6580 | tempreg, tempreg, breg); | |
6581 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, tempreg); | |
6582 | } | |
6583 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
6584 | { |
6585 | /* If this is a reference to a GP relative symbol, and there | |
6586 | is no base register, we want | |
cdf6fd85 | 6587 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
6588 | Otherwise, if there is no base register, we want |
6589 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6590 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6591 | If we have a constant, we need two instructions anyhow, | |
6592 | so we always use the latter form. | |
6593 | ||
6594 | If we have a base register, and this is a reference to a | |
6595 | GP relative symbol, we want | |
6596 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 6597 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
6598 | Otherwise we want |
6599 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6600 | addu $tempreg,$tempreg,$breg | |
6601 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 6602 | With a constant we always use the latter case. |
76b3015f | 6603 | |
d6bc6245 TS |
6604 | With 64bit address space and no base register and $at usable, |
6605 | we want | |
6606 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6607 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6608 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6609 | dsll32 $tempreg,0 | |
6610 | daddu $tempreg,$at | |
6611 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6612 | If we have a base register, we want | |
6613 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6614 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6615 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6616 | daddu $at,$breg | |
6617 | dsll32 $tempreg,0 | |
6618 | daddu $tempreg,$at | |
6619 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6620 | ||
6621 | Without $at we can't generate the optimal path for superscalar | |
6622 | processors here since this would require two temporary registers. | |
6623 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6624 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6625 | dsll $tempreg,16 | |
6626 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6627 | dsll $tempreg,16 | |
6628 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6629 | If we have a base register, we want | |
6630 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6631 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6632 | dsll $tempreg,16 | |
6633 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6634 | dsll $tempreg,16 | |
6635 | daddu $tempreg,$tempreg,$breg | |
6636 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 | 6637 | |
6caf9ef4 | 6638 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
6639 | the same sequence as in 32bit address space. */ |
6640 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 6641 | { |
aed1a261 | 6642 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
6643 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
6644 | { | |
6645 | relax_start (offset_expr.X_add_symbol); | |
6646 | if (breg == 0) | |
6647 | { | |
6648 | macro_build (&offset_expr, s, fmt, treg, | |
6649 | BFD_RELOC_GPREL16, mips_gp_register); | |
6650 | } | |
6651 | else | |
6652 | { | |
6653 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
6654 | tempreg, breg, mips_gp_register); | |
6655 | macro_build (&offset_expr, s, fmt, treg, | |
6656 | BFD_RELOC_GPREL16, tempreg); | |
6657 | } | |
6658 | relax_switch (); | |
6659 | } | |
d6bc6245 | 6660 | |
741fe287 | 6661 | if (used_at == 0 && mips_opts.at) |
d6bc6245 | 6662 | { |
67c0d1eb RS |
6663 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
6664 | BFD_RELOC_MIPS_HIGHEST); | |
6665 | macro_build (&offset_expr, "lui", "t,u", AT, | |
6666 | BFD_RELOC_HI16_S); | |
6667 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6668 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 6669 | if (breg != 0) |
67c0d1eb RS |
6670 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
6671 | macro_build (NULL, "dsll32", "d,w,<", tempreg, tempreg, 0); | |
6672 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); | |
6673 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, | |
6674 | tempreg); | |
d6bc6245 TS |
6675 | used_at = 1; |
6676 | } | |
6677 | else | |
6678 | { | |
67c0d1eb RS |
6679 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
6680 | BFD_RELOC_MIPS_HIGHEST); | |
6681 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6682 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
6683 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); | |
6684 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6685 | tempreg, BFD_RELOC_HI16_S); | |
6686 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); | |
d6bc6245 | 6687 | if (breg != 0) |
67c0d1eb | 6688 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 6689 | tempreg, tempreg, breg); |
67c0d1eb | 6690 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6691 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 6692 | } |
6caf9ef4 TS |
6693 | |
6694 | if (mips_relax.sequence) | |
6695 | relax_end (); | |
8fc2e39e | 6696 | break; |
d6bc6245 | 6697 | } |
256ab948 | 6698 | |
252b5132 RH |
6699 | if (breg == 0) |
6700 | { | |
67c0d1eb | 6701 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 6702 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 6703 | { |
4d7206a2 | 6704 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6705 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_GPREL16, |
6706 | mips_gp_register); | |
4d7206a2 | 6707 | relax_switch (); |
252b5132 | 6708 | } |
67c0d1eb RS |
6709 | macro_build_lui (&offset_expr, tempreg); |
6710 | macro_build (&offset_expr, s, fmt, treg, | |
17a2f251 | 6711 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
6712 | if (mips_relax.sequence) |
6713 | relax_end (); | |
252b5132 RH |
6714 | } |
6715 | else | |
6716 | { | |
67c0d1eb | 6717 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 6718 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 6719 | { |
4d7206a2 | 6720 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6721 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6722 | tempreg, breg, mips_gp_register); |
67c0d1eb | 6723 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6724 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 6725 | relax_switch (); |
252b5132 | 6726 | } |
67c0d1eb RS |
6727 | macro_build_lui (&offset_expr, tempreg); |
6728 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 6729 | tempreg, tempreg, breg); |
67c0d1eb | 6730 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6731 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
6732 | if (mips_relax.sequence) |
6733 | relax_end (); | |
252b5132 RH |
6734 | } |
6735 | } | |
0a44bf69 | 6736 | else if (!mips_big_got) |
252b5132 | 6737 | { |
ed6fb7bd | 6738 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 6739 | |
252b5132 RH |
6740 | /* If this is a reference to an external symbol, we want |
6741 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6742 | nop | |
6743 | <op> $treg,0($tempreg) | |
6744 | Otherwise we want | |
6745 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6746 | nop | |
6747 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6748 | <op> $treg,0($tempreg) | |
f5040a92 AO |
6749 | |
6750 | For NewABI, we want | |
6751 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6752 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) | |
6753 | ||
252b5132 RH |
6754 | If there is a base register, we add it to $tempreg before |
6755 | the <op>. If there is a constant, we stick it in the | |
6756 | <op> instruction. We don't handle constants larger than | |
6757 | 16 bits, because we have no way to load the upper 16 bits | |
6758 | (actually, we could handle them for the subset of cases | |
6759 | in which we are not using $at). */ | |
9c2799c2 | 6760 | gas_assert (offset_expr.X_op == O_symbol); |
f5040a92 AO |
6761 | if (HAVE_NEWABI) |
6762 | { | |
67c0d1eb RS |
6763 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6764 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 6765 | if (breg != 0) |
67c0d1eb | 6766 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6767 | tempreg, tempreg, breg); |
67c0d1eb | 6768 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6769 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
6770 | break; |
6771 | } | |
252b5132 RH |
6772 | expr1.X_add_number = offset_expr.X_add_number; |
6773 | offset_expr.X_add_number = 0; | |
6774 | if (expr1.X_add_number < -0x8000 | |
6775 | || expr1.X_add_number >= 0x8000) | |
6776 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
6777 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6778 | lw_reloc_type, mips_gp_register); | |
269137b2 | 6779 | load_delay_nop (); |
4d7206a2 RS |
6780 | relax_start (offset_expr.X_add_symbol); |
6781 | relax_switch (); | |
67c0d1eb RS |
6782 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
6783 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 6784 | relax_end (); |
252b5132 | 6785 | if (breg != 0) |
67c0d1eb | 6786 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6787 | tempreg, tempreg, breg); |
67c0d1eb | 6788 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 6789 | } |
0a44bf69 | 6790 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 6791 | { |
67c0d1eb | 6792 | int gpdelay; |
252b5132 RH |
6793 | |
6794 | /* If this is a reference to an external symbol, we want | |
6795 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6796 | addu $tempreg,$tempreg,$gp | |
6797 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6798 | <op> $treg,0($tempreg) | |
6799 | Otherwise we want | |
6800 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6801 | nop | |
6802 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6803 | <op> $treg,0($tempreg) | |
6804 | If there is a base register, we add it to $tempreg before | |
6805 | the <op>. If there is a constant, we stick it in the | |
6806 | <op> instruction. We don't handle constants larger than | |
6807 | 16 bits, because we have no way to load the upper 16 bits | |
6808 | (actually, we could handle them for the subset of cases | |
f5040a92 | 6809 | in which we are not using $at). */ |
9c2799c2 | 6810 | gas_assert (offset_expr.X_op == O_symbol); |
252b5132 RH |
6811 | expr1.X_add_number = offset_expr.X_add_number; |
6812 | offset_expr.X_add_number = 0; | |
6813 | if (expr1.X_add_number < -0x8000 | |
6814 | || expr1.X_add_number >= 0x8000) | |
6815 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 6816 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 6817 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6818 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
17a2f251 | 6819 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
6820 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
6821 | mips_gp_register); | |
6822 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6823 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 6824 | relax_switch (); |
67c0d1eb RS |
6825 | if (gpdelay) |
6826 | macro_build (NULL, "nop", ""); | |
6827 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6828 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 6829 | load_delay_nop (); |
67c0d1eb RS |
6830 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
6831 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
6832 | relax_end (); |
6833 | ||
252b5132 | 6834 | if (breg != 0) |
67c0d1eb | 6835 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6836 | tempreg, tempreg, breg); |
67c0d1eb | 6837 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 6838 | } |
0a44bf69 | 6839 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 6840 | { |
f5040a92 AO |
6841 | /* If this is a reference to an external symbol, we want |
6842 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6843 | add $tempreg,$tempreg,$gp | |
6844 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6845 | <op> $treg,<ofst>($tempreg) | |
6846 | Otherwise, for local symbols, we want: | |
6847 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6848 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ | |
9c2799c2 | 6849 | gas_assert (offset_expr.X_op == O_symbol); |
4d7206a2 | 6850 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
6851 | offset_expr.X_add_number = 0; |
6852 | if (expr1.X_add_number < -0x8000 | |
6853 | || expr1.X_add_number >= 0x8000) | |
6854 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 6855 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6856 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
17a2f251 | 6857 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
6858 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
6859 | mips_gp_register); | |
6860 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6861 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 6862 | if (breg != 0) |
67c0d1eb | 6863 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6864 | tempreg, tempreg, breg); |
67c0d1eb | 6865 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
684022ea | 6866 | |
4d7206a2 | 6867 | relax_switch (); |
f5040a92 | 6868 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
6869 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6870 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 6871 | if (breg != 0) |
67c0d1eb | 6872 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6873 | tempreg, tempreg, breg); |
67c0d1eb | 6874 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6875 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 6876 | relax_end (); |
f5040a92 | 6877 | } |
252b5132 RH |
6878 | else |
6879 | abort (); | |
6880 | ||
252b5132 RH |
6881 | break; |
6882 | ||
6883 | case M_LI: | |
6884 | case M_LI_S: | |
67c0d1eb | 6885 | load_register (treg, &imm_expr, 0); |
8fc2e39e | 6886 | break; |
252b5132 RH |
6887 | |
6888 | case M_DLI: | |
67c0d1eb | 6889 | load_register (treg, &imm_expr, 1); |
8fc2e39e | 6890 | break; |
252b5132 RH |
6891 | |
6892 | case M_LI_SS: | |
6893 | if (imm_expr.X_op == O_constant) | |
6894 | { | |
8fc2e39e | 6895 | used_at = 1; |
67c0d1eb RS |
6896 | load_register (AT, &imm_expr, 0); |
6897 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
6898 | break; |
6899 | } | |
6900 | else | |
6901 | { | |
9c2799c2 | 6902 | gas_assert (offset_expr.X_op == O_symbol |
252b5132 RH |
6903 | && strcmp (segment_name (S_GET_SEGMENT |
6904 | (offset_expr.X_add_symbol)), | |
6905 | ".lit4") == 0 | |
6906 | && offset_expr.X_add_number == 0); | |
67c0d1eb | 6907 | macro_build (&offset_expr, "lwc1", "T,o(b)", treg, |
17a2f251 | 6908 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 6909 | break; |
252b5132 RH |
6910 | } |
6911 | ||
6912 | case M_LI_D: | |
ca4e0257 RS |
6913 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
6914 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
6915 | order 32 bits of the value and the low order 32 bits are either | |
6916 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
6917 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6918 | { | |
ca4e0257 | 6919 | if (HAVE_64BIT_GPRS) |
67c0d1eb | 6920 | load_register (treg, &imm_expr, 1); |
252b5132 RH |
6921 | else |
6922 | { | |
6923 | int hreg, lreg; | |
6924 | ||
6925 | if (target_big_endian) | |
6926 | { | |
6927 | hreg = treg; | |
6928 | lreg = treg + 1; | |
6929 | } | |
6930 | else | |
6931 | { | |
6932 | hreg = treg + 1; | |
6933 | lreg = treg; | |
6934 | } | |
6935 | ||
6936 | if (hreg <= 31) | |
67c0d1eb | 6937 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
6938 | if (lreg <= 31) |
6939 | { | |
6940 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 6941 | move_register (lreg, 0); |
252b5132 RH |
6942 | else |
6943 | { | |
9c2799c2 | 6944 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 6945 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
6946 | } |
6947 | } | |
6948 | } | |
8fc2e39e | 6949 | break; |
252b5132 RH |
6950 | } |
6951 | ||
6952 | /* We know that sym is in the .rdata section. First we get the | |
6953 | upper 16 bits of the address. */ | |
6954 | if (mips_pic == NO_PIC) | |
6955 | { | |
67c0d1eb | 6956 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 6957 | used_at = 1; |
252b5132 | 6958 | } |
0a44bf69 | 6959 | else |
252b5132 | 6960 | { |
67c0d1eb RS |
6961 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
6962 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 6963 | used_at = 1; |
252b5132 | 6964 | } |
bdaaa2e1 | 6965 | |
252b5132 | 6966 | /* Now we load the register(s). */ |
ca4e0257 | 6967 | if (HAVE_64BIT_GPRS) |
8fc2e39e TS |
6968 | { |
6969 | used_at = 1; | |
6970 | macro_build (&offset_expr, "ld", "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
6971 | } | |
252b5132 RH |
6972 | else |
6973 | { | |
8fc2e39e | 6974 | used_at = 1; |
67c0d1eb | 6975 | macro_build (&offset_expr, "lw", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
f9419b05 | 6976 | if (treg != RA) |
252b5132 RH |
6977 | { |
6978 | /* FIXME: How in the world do we deal with the possible | |
6979 | overflow here? */ | |
6980 | offset_expr.X_add_number += 4; | |
67c0d1eb | 6981 | macro_build (&offset_expr, "lw", "t,o(b)", |
17a2f251 | 6982 | treg + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
6983 | } |
6984 | } | |
252b5132 RH |
6985 | break; |
6986 | ||
6987 | case M_LI_DD: | |
ca4e0257 RS |
6988 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
6989 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
6990 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
6991 | the value and the low order 32 bits are either zero or in | |
6992 | OFFSET_EXPR. */ | |
252b5132 RH |
6993 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6994 | { | |
8fc2e39e | 6995 | used_at = 1; |
67c0d1eb | 6996 | load_register (AT, &imm_expr, HAVE_64BIT_FPRS); |
ca4e0257 RS |
6997 | if (HAVE_64BIT_FPRS) |
6998 | { | |
9c2799c2 | 6999 | gas_assert (HAVE_64BIT_GPRS); |
67c0d1eb | 7000 | macro_build (NULL, "dmtc1", "t,S", AT, treg); |
ca4e0257 | 7001 | } |
252b5132 RH |
7002 | else |
7003 | { | |
67c0d1eb | 7004 | macro_build (NULL, "mtc1", "t,G", AT, treg + 1); |
252b5132 | 7005 | if (offset_expr.X_op == O_absent) |
67c0d1eb | 7006 | macro_build (NULL, "mtc1", "t,G", 0, treg); |
252b5132 RH |
7007 | else |
7008 | { | |
9c2799c2 | 7009 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb RS |
7010 | load_register (AT, &offset_expr, 0); |
7011 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
7012 | } |
7013 | } | |
7014 | break; | |
7015 | } | |
7016 | ||
9c2799c2 | 7017 | gas_assert (offset_expr.X_op == O_symbol |
252b5132 RH |
7018 | && offset_expr.X_add_number == 0); |
7019 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); | |
7020 | if (strcmp (s, ".lit8") == 0) | |
7021 | { | |
e7af610e | 7022 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 | 7023 | { |
67c0d1eb | 7024 | macro_build (&offset_expr, "ldc1", "T,o(b)", treg, |
17a2f251 | 7025 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 7026 | break; |
252b5132 | 7027 | } |
c9914766 | 7028 | breg = mips_gp_register; |
252b5132 RH |
7029 | r = BFD_RELOC_MIPS_LITERAL; |
7030 | goto dob; | |
7031 | } | |
7032 | else | |
7033 | { | |
9c2799c2 | 7034 | gas_assert (strcmp (s, RDATA_SECTION_NAME) == 0); |
8fc2e39e | 7035 | used_at = 1; |
0a44bf69 | 7036 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
7037 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
7038 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
7039 | else |
7040 | { | |
7041 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 7042 | macro_build_lui (&offset_expr, AT); |
252b5132 | 7043 | } |
bdaaa2e1 | 7044 | |
e7af610e | 7045 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 | 7046 | { |
67c0d1eb RS |
7047 | macro_build (&offset_expr, "ldc1", "T,o(b)", |
7048 | treg, BFD_RELOC_LO16, AT); | |
252b5132 RH |
7049 | break; |
7050 | } | |
7051 | breg = AT; | |
7052 | r = BFD_RELOC_LO16; | |
7053 | goto dob; | |
7054 | } | |
7055 | ||
7056 | case M_L_DOB: | |
252b5132 RH |
7057 | /* Even on a big endian machine $fn comes before $fn+1. We have |
7058 | to adjust when loading from memory. */ | |
7059 | r = BFD_RELOC_LO16; | |
7060 | dob: | |
9c2799c2 | 7061 | gas_assert (mips_opts.isa == ISA_MIPS1); |
67c0d1eb | 7062 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 7063 | target_big_endian ? treg + 1 : treg, r, breg); |
252b5132 RH |
7064 | /* FIXME: A possible overflow which I don't know how to deal |
7065 | with. */ | |
7066 | offset_expr.X_add_number += 4; | |
67c0d1eb | 7067 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 7068 | target_big_endian ? treg : treg + 1, r, breg); |
252b5132 RH |
7069 | break; |
7070 | ||
7071 | case M_L_DAB: | |
7072 | /* | |
7073 | * The MIPS assembler seems to check for X_add_number not | |
7074 | * being double aligned and generating: | |
7075 | * lui at,%hi(foo+1) | |
7076 | * addu at,at,v1 | |
7077 | * addiu at,at,%lo(foo+1) | |
7078 | * lwc1 f2,0(at) | |
7079 | * lwc1 f3,4(at) | |
7080 | * But, the resulting address is the same after relocation so why | |
7081 | * generate the extra instruction? | |
7082 | */ | |
bdaaa2e1 | 7083 | /* Itbl support may require additional care here. */ |
252b5132 | 7084 | coproc = 1; |
e7af610e | 7085 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
7086 | { |
7087 | s = "ldc1"; | |
7088 | goto ld; | |
7089 | } | |
7090 | ||
7091 | s = "lwc1"; | |
7092 | fmt = "T,o(b)"; | |
7093 | goto ldd_std; | |
7094 | ||
7095 | case M_S_DAB: | |
e7af610e | 7096 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
7097 | { |
7098 | s = "sdc1"; | |
7099 | goto st; | |
7100 | } | |
7101 | ||
7102 | s = "swc1"; | |
7103 | fmt = "T,o(b)"; | |
bdaaa2e1 | 7104 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7105 | coproc = 1; |
7106 | goto ldd_std; | |
7107 | ||
7108 | case M_LD_AB: | |
ca4e0257 | 7109 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
7110 | { |
7111 | s = "ld"; | |
7112 | goto ld; | |
7113 | } | |
7114 | ||
7115 | s = "lw"; | |
7116 | fmt = "t,o(b)"; | |
7117 | goto ldd_std; | |
7118 | ||
7119 | case M_SD_AB: | |
ca4e0257 | 7120 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
7121 | { |
7122 | s = "sd"; | |
7123 | goto st; | |
7124 | } | |
7125 | ||
7126 | s = "sw"; | |
7127 | fmt = "t,o(b)"; | |
7128 | ||
7129 | ldd_std: | |
7130 | if (offset_expr.X_op != O_symbol | |
7131 | && offset_expr.X_op != O_constant) | |
7132 | { | |
7133 | as_bad (_("expression too complex")); | |
7134 | offset_expr.X_op = O_constant; | |
7135 | } | |
7136 | ||
2051e8c4 MR |
7137 | if (HAVE_32BIT_ADDRESSES |
7138 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
7139 | { |
7140 | char value [32]; | |
7141 | ||
7142 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 7143 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 7144 | } |
2051e8c4 | 7145 | |
252b5132 RH |
7146 | /* Even on a big endian machine $fn comes before $fn+1. We have |
7147 | to adjust when loading from memory. We set coproc if we must | |
7148 | load $fn+1 first. */ | |
bdaaa2e1 | 7149 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7150 | if (! target_big_endian) |
7151 | coproc = 0; | |
7152 | ||
7153 | if (mips_pic == NO_PIC | |
7154 | || offset_expr.X_op == O_constant) | |
7155 | { | |
7156 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 TS |
7157 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
7158 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
7159 | If we have a base register, we use this |
7160 | addu $at,$breg,$gp | |
cdf6fd85 TS |
7161 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
7162 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
7163 | If this is not a GP relative symbol, we want |
7164 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
7165 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7166 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7167 | If there is a base register, we add it to $at after the | |
7168 | lui instruction. If there is a constant, we always use | |
7169 | the last case. */ | |
39a59cf8 MR |
7170 | if (offset_expr.X_op == O_symbol |
7171 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 7172 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 7173 | { |
4d7206a2 | 7174 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
7175 | if (breg == 0) |
7176 | { | |
c9914766 | 7177 | tempreg = mips_gp_register; |
252b5132 RH |
7178 | } |
7179 | else | |
7180 | { | |
67c0d1eb | 7181 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7182 | AT, breg, mips_gp_register); |
252b5132 | 7183 | tempreg = AT; |
252b5132 RH |
7184 | used_at = 1; |
7185 | } | |
7186 | ||
beae10d5 | 7187 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7188 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 7189 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
7190 | offset_expr.X_add_number += 4; |
7191 | ||
7192 | /* Set mips_optimize to 2 to avoid inserting an | |
7193 | undesired nop. */ | |
7194 | hold_mips_optimize = mips_optimize; | |
7195 | mips_optimize = 2; | |
beae10d5 | 7196 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7197 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 7198 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
7199 | mips_optimize = hold_mips_optimize; |
7200 | ||
4d7206a2 | 7201 | relax_switch (); |
252b5132 | 7202 | |
0970e49e | 7203 | offset_expr.X_add_number -= 4; |
252b5132 | 7204 | } |
8fc2e39e | 7205 | used_at = 1; |
67c0d1eb | 7206 | macro_build_lui (&offset_expr, AT); |
252b5132 | 7207 | if (breg != 0) |
67c0d1eb | 7208 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 7209 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7210 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 7211 | BFD_RELOC_LO16, AT); |
252b5132 RH |
7212 | /* FIXME: How do we handle overflow here? */ |
7213 | offset_expr.X_add_number += 4; | |
beae10d5 | 7214 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7215 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 7216 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
7217 | if (mips_relax.sequence) |
7218 | relax_end (); | |
bdaaa2e1 | 7219 | } |
0a44bf69 | 7220 | else if (!mips_big_got) |
252b5132 | 7221 | { |
252b5132 RH |
7222 | /* If this is a reference to an external symbol, we want |
7223 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7224 | nop | |
7225 | <op> $treg,0($at) | |
7226 | <op> $treg+1,4($at) | |
7227 | Otherwise we want | |
7228 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7229 | nop | |
7230 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7231 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7232 | If there is a base register we add it to $at before the | |
7233 | lwc1 instructions. If there is a constant we include it | |
7234 | in the lwc1 instructions. */ | |
7235 | used_at = 1; | |
7236 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
7237 | if (expr1.X_add_number < -0x8000 |
7238 | || expr1.X_add_number >= 0x8000 - 4) | |
7239 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 7240 | load_got_offset (AT, &offset_expr); |
269137b2 | 7241 | load_delay_nop (); |
252b5132 | 7242 | if (breg != 0) |
67c0d1eb | 7243 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
7244 | |
7245 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7246 | nop. */ | |
7247 | hold_mips_optimize = mips_optimize; | |
7248 | mips_optimize = 2; | |
4d7206a2 | 7249 | |
beae10d5 | 7250 | /* Itbl support may require additional care here. */ |
4d7206a2 | 7251 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7252 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
7253 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7254 | expr1.X_add_number += 4; |
67c0d1eb RS |
7255 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
7256 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7257 | relax_switch (); |
67c0d1eb RS |
7258 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
7259 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7260 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
7261 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
7262 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7263 | relax_end (); |
252b5132 | 7264 | |
4d7206a2 | 7265 | mips_optimize = hold_mips_optimize; |
252b5132 | 7266 | } |
0a44bf69 | 7267 | else if (mips_big_got) |
252b5132 | 7268 | { |
67c0d1eb | 7269 | int gpdelay; |
252b5132 RH |
7270 | |
7271 | /* If this is a reference to an external symbol, we want | |
7272 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7273 | addu $at,$at,$gp | |
7274 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
7275 | nop | |
7276 | <op> $treg,0($at) | |
7277 | <op> $treg+1,4($at) | |
7278 | Otherwise we want | |
7279 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7280 | nop | |
7281 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7282 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7283 | If there is a base register we add it to $at before the | |
7284 | lwc1 instructions. If there is a constant we include it | |
7285 | in the lwc1 instructions. */ | |
7286 | used_at = 1; | |
7287 | expr1.X_add_number = offset_expr.X_add_number; | |
7288 | offset_expr.X_add_number = 0; | |
7289 | if (expr1.X_add_number < -0x8000 | |
7290 | || expr1.X_add_number >= 0x8000 - 4) | |
7291 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 7292 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 7293 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7294 | macro_build (&offset_expr, "lui", "t,u", |
7295 | AT, BFD_RELOC_MIPS_GOT_HI16); | |
7296 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 7297 | AT, AT, mips_gp_register); |
67c0d1eb | 7298 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 7299 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 7300 | load_delay_nop (); |
252b5132 | 7301 | if (breg != 0) |
67c0d1eb | 7302 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 7303 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7304 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 7305 | BFD_RELOC_LO16, AT); |
252b5132 RH |
7306 | expr1.X_add_number += 4; |
7307 | ||
7308 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7309 | nop. */ | |
7310 | hold_mips_optimize = mips_optimize; | |
7311 | mips_optimize = 2; | |
beae10d5 | 7312 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7313 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 7314 | BFD_RELOC_LO16, AT); |
252b5132 RH |
7315 | mips_optimize = hold_mips_optimize; |
7316 | expr1.X_add_number -= 4; | |
7317 | ||
4d7206a2 RS |
7318 | relax_switch (); |
7319 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
7320 | if (gpdelay) |
7321 | macro_build (NULL, "nop", ""); | |
7322 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
7323 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 7324 | load_delay_nop (); |
252b5132 | 7325 | if (breg != 0) |
67c0d1eb | 7326 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 7327 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
7328 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
7329 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7330 | offset_expr.X_add_number += 4; |
252b5132 RH |
7331 | |
7332 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7333 | nop. */ | |
7334 | hold_mips_optimize = mips_optimize; | |
7335 | mips_optimize = 2; | |
beae10d5 | 7336 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
7337 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
7338 | BFD_RELOC_LO16, AT); | |
252b5132 | 7339 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 7340 | relax_end (); |
252b5132 | 7341 | } |
252b5132 RH |
7342 | else |
7343 | abort (); | |
7344 | ||
252b5132 RH |
7345 | break; |
7346 | ||
7347 | case M_LD_OB: | |
704897fb | 7348 | s = HAVE_64BIT_GPRS ? "ld" : "lw"; |
252b5132 RH |
7349 | goto sd_ob; |
7350 | case M_SD_OB: | |
704897fb | 7351 | s = HAVE_64BIT_GPRS ? "sd" : "sw"; |
252b5132 | 7352 | sd_ob: |
67c0d1eb | 7353 | macro_build (&offset_expr, s, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
704897fb MR |
7354 | if (!HAVE_64BIT_GPRS) |
7355 | { | |
7356 | offset_expr.X_add_number += 4; | |
7357 | macro_build (&offset_expr, s, "t,o(b)", treg + 1, | |
7358 | BFD_RELOC_LO16, breg); | |
7359 | } | |
8fc2e39e | 7360 | break; |
252b5132 RH |
7361 | |
7362 | /* New code added to support COPZ instructions. | |
7363 | This code builds table entries out of the macros in mip_opcodes. | |
7364 | R4000 uses interlocks to handle coproc delays. | |
7365 | Other chips (like the R3000) require nops to be inserted for delays. | |
7366 | ||
f72c8c98 | 7367 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
7368 | In order to fill delay slots for non-interlocked chips, |
7369 | we must have a way to specify delays based on the coprocessor. | |
7370 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
7371 | What are the side-effects of the cop instruction? | |
7372 | What cache support might we have and what are its effects? | |
7373 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 7374 | What registers are read/set/modified? |
252b5132 RH |
7375 | |
7376 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 7377 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
7378 | |
7379 | case M_COP0: | |
7380 | s = "c0"; | |
7381 | goto copz; | |
7382 | case M_COP1: | |
7383 | s = "c1"; | |
7384 | goto copz; | |
7385 | case M_COP2: | |
7386 | s = "c2"; | |
7387 | goto copz; | |
7388 | case M_COP3: | |
7389 | s = "c3"; | |
7390 | copz: | |
b19e8a9b AN |
7391 | if (NO_ISA_COP (mips_opts.arch) |
7392 | && (ip->insn_mo->pinfo2 & INSN2_M_FP_S) == 0) | |
7393 | { | |
7394 | as_bad (_("opcode not supported on this processor: %s"), | |
7395 | mips_cpu_info_from_arch (mips_opts.arch)->name); | |
7396 | break; | |
7397 | } | |
7398 | ||
252b5132 RH |
7399 | /* For now we just do C (same as Cz). The parameter will be |
7400 | stored in insn_opcode by mips_ip. */ | |
67c0d1eb | 7401 | macro_build (NULL, s, "C", ip->insn_opcode); |
8fc2e39e | 7402 | break; |
252b5132 | 7403 | |
ea1fb5dc | 7404 | case M_MOVE: |
67c0d1eb | 7405 | move_register (dreg, sreg); |
8fc2e39e | 7406 | break; |
ea1fb5dc | 7407 | |
252b5132 RH |
7408 | case M_DMUL: |
7409 | dbl = 1; | |
7410 | case M_MUL: | |
67c0d1eb RS |
7411 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", sreg, treg); |
7412 | macro_build (NULL, "mflo", "d", dreg); | |
8fc2e39e | 7413 | break; |
252b5132 RH |
7414 | |
7415 | case M_DMUL_I: | |
7416 | dbl = 1; | |
7417 | case M_MUL_I: | |
7418 | /* The MIPS assembler some times generates shifts and adds. I'm | |
7419 | not trying to be that fancy. GCC should do this for us | |
7420 | anyway. */ | |
8fc2e39e | 7421 | used_at = 1; |
67c0d1eb RS |
7422 | load_register (AT, &imm_expr, dbl); |
7423 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, AT); | |
7424 | macro_build (NULL, "mflo", "d", dreg); | |
252b5132 RH |
7425 | break; |
7426 | ||
7427 | case M_DMULO_I: | |
7428 | dbl = 1; | |
7429 | case M_MULO_I: | |
7430 | imm = 1; | |
7431 | goto do_mulo; | |
7432 | ||
7433 | case M_DMULO: | |
7434 | dbl = 1; | |
7435 | case M_MULO: | |
7436 | do_mulo: | |
7d10b47d | 7437 | start_noreorder (); |
8fc2e39e | 7438 | used_at = 1; |
252b5132 | 7439 | if (imm) |
67c0d1eb RS |
7440 | load_register (AT, &imm_expr, dbl); |
7441 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); | |
7442 | macro_build (NULL, "mflo", "d", dreg); | |
7443 | macro_build (NULL, dbl ? "dsra32" : "sra", "d,w,<", dreg, dreg, RA); | |
7444 | macro_build (NULL, "mfhi", "d", AT); | |
252b5132 | 7445 | if (mips_trap) |
67c0d1eb | 7446 | macro_build (NULL, "tne", "s,t,q", dreg, AT, 6); |
252b5132 RH |
7447 | else |
7448 | { | |
7449 | expr1.X_add_number = 8; | |
67c0d1eb RS |
7450 | macro_build (&expr1, "beq", "s,t,p", dreg, AT); |
7451 | macro_build (NULL, "nop", "", 0); | |
7452 | macro_build (NULL, "break", "c", 6); | |
252b5132 | 7453 | } |
7d10b47d | 7454 | end_noreorder (); |
67c0d1eb | 7455 | macro_build (NULL, "mflo", "d", dreg); |
252b5132 RH |
7456 | break; |
7457 | ||
7458 | case M_DMULOU_I: | |
7459 | dbl = 1; | |
7460 | case M_MULOU_I: | |
7461 | imm = 1; | |
7462 | goto do_mulou; | |
7463 | ||
7464 | case M_DMULOU: | |
7465 | dbl = 1; | |
7466 | case M_MULOU: | |
7467 | do_mulou: | |
7d10b47d | 7468 | start_noreorder (); |
8fc2e39e | 7469 | used_at = 1; |
252b5132 | 7470 | if (imm) |
67c0d1eb RS |
7471 | load_register (AT, &imm_expr, dbl); |
7472 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
17a2f251 | 7473 | sreg, imm ? AT : treg); |
67c0d1eb RS |
7474 | macro_build (NULL, "mfhi", "d", AT); |
7475 | macro_build (NULL, "mflo", "d", dreg); | |
252b5132 | 7476 | if (mips_trap) |
67c0d1eb | 7477 | macro_build (NULL, "tne", "s,t,q", AT, 0, 6); |
252b5132 RH |
7478 | else |
7479 | { | |
7480 | expr1.X_add_number = 8; | |
67c0d1eb RS |
7481 | macro_build (&expr1, "beq", "s,t,p", AT, 0); |
7482 | macro_build (NULL, "nop", "", 0); | |
7483 | macro_build (NULL, "break", "c", 6); | |
252b5132 | 7484 | } |
7d10b47d | 7485 | end_noreorder (); |
252b5132 RH |
7486 | break; |
7487 | ||
771c7ce4 | 7488 | case M_DROL: |
fef14a42 | 7489 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
7490 | { |
7491 | if (dreg == sreg) | |
7492 | { | |
7493 | tempreg = AT; | |
7494 | used_at = 1; | |
7495 | } | |
7496 | else | |
7497 | { | |
7498 | tempreg = dreg; | |
82dd0097 | 7499 | } |
67c0d1eb RS |
7500 | macro_build (NULL, "dnegu", "d,w", tempreg, treg); |
7501 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 7502 | break; |
82dd0097 | 7503 | } |
8fc2e39e | 7504 | used_at = 1; |
67c0d1eb RS |
7505 | macro_build (NULL, "dsubu", "d,v,t", AT, 0, treg); |
7506 | macro_build (NULL, "dsrlv", "d,t,s", AT, sreg, AT); | |
7507 | macro_build (NULL, "dsllv", "d,t,s", dreg, sreg, treg); | |
7508 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7509 | break; |
7510 | ||
252b5132 | 7511 | case M_ROL: |
fef14a42 | 7512 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 CD |
7513 | { |
7514 | if (dreg == sreg) | |
7515 | { | |
7516 | tempreg = AT; | |
7517 | used_at = 1; | |
7518 | } | |
7519 | else | |
7520 | { | |
7521 | tempreg = dreg; | |
82dd0097 | 7522 | } |
67c0d1eb RS |
7523 | macro_build (NULL, "negu", "d,w", tempreg, treg); |
7524 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 7525 | break; |
82dd0097 | 7526 | } |
8fc2e39e | 7527 | used_at = 1; |
67c0d1eb RS |
7528 | macro_build (NULL, "subu", "d,v,t", AT, 0, treg); |
7529 | macro_build (NULL, "srlv", "d,t,s", AT, sreg, AT); | |
7530 | macro_build (NULL, "sllv", "d,t,s", dreg, sreg, treg); | |
7531 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7532 | break; |
7533 | ||
771c7ce4 TS |
7534 | case M_DROL_I: |
7535 | { | |
7536 | unsigned int rot; | |
91d6fa6a NC |
7537 | char *l; |
7538 | char *rr; | |
771c7ce4 TS |
7539 | |
7540 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7541 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7542 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 7543 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
7544 | { |
7545 | rot = (64 - rot) & 0x3f; | |
7546 | if (rot >= 32) | |
67c0d1eb | 7547 | macro_build (NULL, "dror32", "d,w,<", dreg, sreg, rot - 32); |
60b63b72 | 7548 | else |
67c0d1eb | 7549 | macro_build (NULL, "dror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7550 | break; |
60b63b72 | 7551 | } |
483fc7cd | 7552 | if (rot == 0) |
483fc7cd | 7553 | { |
67c0d1eb | 7554 | macro_build (NULL, "dsrl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7555 | break; |
483fc7cd | 7556 | } |
82dd0097 | 7557 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
91d6fa6a | 7558 | rr = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 | 7559 | rot &= 0x1f; |
8fc2e39e | 7560 | used_at = 1; |
67c0d1eb | 7561 | macro_build (NULL, l, "d,w,<", AT, sreg, rot); |
91d6fa6a | 7562 | macro_build (NULL, rr, "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); |
67c0d1eb | 7563 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
7564 | } |
7565 | break; | |
7566 | ||
252b5132 | 7567 | case M_ROL_I: |
771c7ce4 TS |
7568 | { |
7569 | unsigned int rot; | |
7570 | ||
7571 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7572 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7573 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 7574 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 7575 | { |
67c0d1eb | 7576 | macro_build (NULL, "ror", "d,w,<", dreg, sreg, (32 - rot) & 0x1f); |
8fc2e39e | 7577 | break; |
60b63b72 | 7578 | } |
483fc7cd | 7579 | if (rot == 0) |
483fc7cd | 7580 | { |
67c0d1eb | 7581 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7582 | break; |
483fc7cd | 7583 | } |
8fc2e39e | 7584 | used_at = 1; |
67c0d1eb RS |
7585 | macro_build (NULL, "sll", "d,w,<", AT, sreg, rot); |
7586 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7587 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7588 | } |
7589 | break; | |
7590 | ||
7591 | case M_DROR: | |
fef14a42 | 7592 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 7593 | { |
67c0d1eb | 7594 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 7595 | break; |
82dd0097 | 7596 | } |
8fc2e39e | 7597 | used_at = 1; |
67c0d1eb RS |
7598 | macro_build (NULL, "dsubu", "d,v,t", AT, 0, treg); |
7599 | macro_build (NULL, "dsllv", "d,t,s", AT, sreg, AT); | |
7600 | macro_build (NULL, "dsrlv", "d,t,s", dreg, sreg, treg); | |
7601 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7602 | break; |
7603 | ||
7604 | case M_ROR: | |
fef14a42 | 7605 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 7606 | { |
67c0d1eb | 7607 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 7608 | break; |
82dd0097 | 7609 | } |
8fc2e39e | 7610 | used_at = 1; |
67c0d1eb RS |
7611 | macro_build (NULL, "subu", "d,v,t", AT, 0, treg); |
7612 | macro_build (NULL, "sllv", "d,t,s", AT, sreg, AT); | |
7613 | macro_build (NULL, "srlv", "d,t,s", dreg, sreg, treg); | |
7614 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7615 | break; |
7616 | ||
771c7ce4 TS |
7617 | case M_DROR_I: |
7618 | { | |
7619 | unsigned int rot; | |
91d6fa6a NC |
7620 | char *l; |
7621 | char *rr; | |
771c7ce4 TS |
7622 | |
7623 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7624 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7625 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 7626 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
7627 | { |
7628 | if (rot >= 32) | |
67c0d1eb | 7629 | macro_build (NULL, "dror32", "d,w,<", dreg, sreg, rot - 32); |
82dd0097 | 7630 | else |
67c0d1eb | 7631 | macro_build (NULL, "dror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7632 | break; |
82dd0097 | 7633 | } |
483fc7cd | 7634 | if (rot == 0) |
483fc7cd | 7635 | { |
67c0d1eb | 7636 | macro_build (NULL, "dsrl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7637 | break; |
483fc7cd | 7638 | } |
91d6fa6a | 7639 | rr = (rot < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 CD |
7640 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; |
7641 | rot &= 0x1f; | |
8fc2e39e | 7642 | used_at = 1; |
91d6fa6a | 7643 | macro_build (NULL, rr, "d,w,<", AT, sreg, rot); |
67c0d1eb RS |
7644 | macro_build (NULL, l, "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); |
7645 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7646 | } |
7647 | break; | |
7648 | ||
252b5132 | 7649 | case M_ROR_I: |
771c7ce4 TS |
7650 | { |
7651 | unsigned int rot; | |
7652 | ||
7653 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7654 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7655 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 7656 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 7657 | { |
67c0d1eb | 7658 | macro_build (NULL, "ror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7659 | break; |
82dd0097 | 7660 | } |
483fc7cd | 7661 | if (rot == 0) |
483fc7cd | 7662 | { |
67c0d1eb | 7663 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7664 | break; |
483fc7cd | 7665 | } |
8fc2e39e | 7666 | used_at = 1; |
67c0d1eb RS |
7667 | macro_build (NULL, "srl", "d,w,<", AT, sreg, rot); |
7668 | macro_build (NULL, "sll", "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7669 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 | 7670 | } |
252b5132 RH |
7671 | break; |
7672 | ||
7673 | case M_S_DOB: | |
9c2799c2 | 7674 | gas_assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
7675 | /* Even on a big endian machine $fn comes before $fn+1. We have |
7676 | to adjust when storing to memory. */ | |
67c0d1eb RS |
7677 | macro_build (&offset_expr, "swc1", "T,o(b)", |
7678 | target_big_endian ? treg + 1 : treg, BFD_RELOC_LO16, breg); | |
252b5132 | 7679 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
7680 | macro_build (&offset_expr, "swc1", "T,o(b)", |
7681 | target_big_endian ? treg : treg + 1, BFD_RELOC_LO16, breg); | |
8fc2e39e | 7682 | break; |
252b5132 RH |
7683 | |
7684 | case M_SEQ: | |
7685 | if (sreg == 0) | |
67c0d1eb | 7686 | macro_build (&expr1, "sltiu", "t,r,j", dreg, treg, BFD_RELOC_LO16); |
252b5132 | 7687 | else if (treg == 0) |
67c0d1eb | 7688 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7689 | else |
7690 | { | |
67c0d1eb RS |
7691 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
7692 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 | 7693 | } |
8fc2e39e | 7694 | break; |
252b5132 RH |
7695 | |
7696 | case M_SEQ_I: | |
7697 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7698 | { | |
67c0d1eb | 7699 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7700 | break; |
252b5132 RH |
7701 | } |
7702 | if (sreg == 0) | |
7703 | { | |
7704 | as_warn (_("Instruction %s: result is always false"), | |
7705 | ip->insn_mo->name); | |
67c0d1eb | 7706 | move_register (dreg, 0); |
8fc2e39e | 7707 | break; |
252b5132 | 7708 | } |
dd3cbb7e NC |
7709 | if (CPU_HAS_SEQ (mips_opts.arch) |
7710 | && -512 <= imm_expr.X_add_number | |
7711 | && imm_expr.X_add_number < 512) | |
7712 | { | |
7713 | macro_build (NULL, "seqi", "t,r,+Q", dreg, sreg, | |
750bdd57 | 7714 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
7715 | break; |
7716 | } | |
252b5132 RH |
7717 | if (imm_expr.X_op == O_constant |
7718 | && imm_expr.X_add_number >= 0 | |
7719 | && imm_expr.X_add_number < 0x10000) | |
7720 | { | |
67c0d1eb | 7721 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7722 | } |
7723 | else if (imm_expr.X_op == O_constant | |
7724 | && imm_expr.X_add_number > -0x8000 | |
7725 | && imm_expr.X_add_number < 0) | |
7726 | { | |
7727 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7728 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 7729 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 7730 | } |
dd3cbb7e NC |
7731 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
7732 | { | |
7733 | used_at = 1; | |
7734 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
7735 | macro_build (NULL, "seq", "d,v,t", dreg, sreg, AT); | |
7736 | break; | |
7737 | } | |
252b5132 RH |
7738 | else |
7739 | { | |
67c0d1eb RS |
7740 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7741 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7742 | used_at = 1; |
7743 | } | |
67c0d1eb | 7744 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 7745 | break; |
252b5132 RH |
7746 | |
7747 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
7748 | s = "slt"; | |
7749 | goto sge; | |
7750 | case M_SGEU: | |
7751 | s = "sltu"; | |
7752 | sge: | |
67c0d1eb RS |
7753 | macro_build (NULL, s, "d,v,t", dreg, sreg, treg); |
7754 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 7755 | break; |
252b5132 RH |
7756 | |
7757 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
7758 | case M_SGEU_I: | |
7759 | if (imm_expr.X_op == O_constant | |
7760 | && imm_expr.X_add_number >= -0x8000 | |
7761 | && imm_expr.X_add_number < 0x8000) | |
7762 | { | |
67c0d1eb RS |
7763 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
7764 | dreg, sreg, BFD_RELOC_LO16); | |
252b5132 RH |
7765 | } |
7766 | else | |
7767 | { | |
67c0d1eb RS |
7768 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7769 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", | |
7770 | dreg, sreg, AT); | |
252b5132 RH |
7771 | used_at = 1; |
7772 | } | |
67c0d1eb | 7773 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 7774 | break; |
252b5132 RH |
7775 | |
7776 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
7777 | s = "slt"; | |
7778 | goto sgt; | |
7779 | case M_SGTU: | |
7780 | s = "sltu"; | |
7781 | sgt: | |
67c0d1eb | 7782 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
8fc2e39e | 7783 | break; |
252b5132 RH |
7784 | |
7785 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
7786 | s = "slt"; | |
7787 | goto sgti; | |
7788 | case M_SGTU_I: | |
7789 | s = "sltu"; | |
7790 | sgti: | |
8fc2e39e | 7791 | used_at = 1; |
67c0d1eb RS |
7792 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7793 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
252b5132 RH |
7794 | break; |
7795 | ||
2396cfb9 | 7796 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
7797 | s = "slt"; |
7798 | goto sle; | |
7799 | case M_SLEU: | |
7800 | s = "sltu"; | |
7801 | sle: | |
67c0d1eb RS |
7802 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
7803 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 7804 | break; |
252b5132 | 7805 | |
2396cfb9 | 7806 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
7807 | s = "slt"; |
7808 | goto slei; | |
7809 | case M_SLEU_I: | |
7810 | s = "sltu"; | |
7811 | slei: | |
8fc2e39e | 7812 | used_at = 1; |
67c0d1eb RS |
7813 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7814 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
7815 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 RH |
7816 | break; |
7817 | ||
7818 | case M_SLT_I: | |
7819 | if (imm_expr.X_op == O_constant | |
7820 | && imm_expr.X_add_number >= -0x8000 | |
7821 | && imm_expr.X_add_number < 0x8000) | |
7822 | { | |
67c0d1eb | 7823 | macro_build (&imm_expr, "slti", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7824 | break; |
252b5132 | 7825 | } |
8fc2e39e | 7826 | used_at = 1; |
67c0d1eb RS |
7827 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7828 | macro_build (NULL, "slt", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7829 | break; |
7830 | ||
7831 | case M_SLTU_I: | |
7832 | if (imm_expr.X_op == O_constant | |
7833 | && imm_expr.X_add_number >= -0x8000 | |
7834 | && imm_expr.X_add_number < 0x8000) | |
7835 | { | |
67c0d1eb | 7836 | macro_build (&imm_expr, "sltiu", "t,r,j", dreg, sreg, |
17a2f251 | 7837 | BFD_RELOC_LO16); |
8fc2e39e | 7838 | break; |
252b5132 | 7839 | } |
8fc2e39e | 7840 | used_at = 1; |
67c0d1eb RS |
7841 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7842 | macro_build (NULL, "sltu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7843 | break; |
7844 | ||
7845 | case M_SNE: | |
7846 | if (sreg == 0) | |
67c0d1eb | 7847 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, treg); |
252b5132 | 7848 | else if (treg == 0) |
67c0d1eb | 7849 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
7850 | else |
7851 | { | |
67c0d1eb RS |
7852 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
7853 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); | |
252b5132 | 7854 | } |
8fc2e39e | 7855 | break; |
252b5132 RH |
7856 | |
7857 | case M_SNE_I: | |
7858 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7859 | { | |
67c0d1eb | 7860 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
8fc2e39e | 7861 | break; |
252b5132 RH |
7862 | } |
7863 | if (sreg == 0) | |
7864 | { | |
7865 | as_warn (_("Instruction %s: result is always true"), | |
7866 | ip->insn_mo->name); | |
67c0d1eb RS |
7867 | macro_build (&expr1, HAVE_32BIT_GPRS ? "addiu" : "daddiu", "t,r,j", |
7868 | dreg, 0, BFD_RELOC_LO16); | |
8fc2e39e | 7869 | break; |
252b5132 | 7870 | } |
dd3cbb7e NC |
7871 | if (CPU_HAS_SEQ (mips_opts.arch) |
7872 | && -512 <= imm_expr.X_add_number | |
7873 | && imm_expr.X_add_number < 512) | |
7874 | { | |
7875 | macro_build (NULL, "snei", "t,r,+Q", dreg, sreg, | |
750bdd57 | 7876 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
7877 | break; |
7878 | } | |
252b5132 RH |
7879 | if (imm_expr.X_op == O_constant |
7880 | && imm_expr.X_add_number >= 0 | |
7881 | && imm_expr.X_add_number < 0x10000) | |
7882 | { | |
67c0d1eb | 7883 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7884 | } |
7885 | else if (imm_expr.X_op == O_constant | |
7886 | && imm_expr.X_add_number > -0x8000 | |
7887 | && imm_expr.X_add_number < 0) | |
7888 | { | |
7889 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7890 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 7891 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 7892 | } |
dd3cbb7e NC |
7893 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
7894 | { | |
7895 | used_at = 1; | |
7896 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
7897 | macro_build (NULL, "sne", "d,v,t", dreg, sreg, AT); | |
7898 | break; | |
7899 | } | |
252b5132 RH |
7900 | else |
7901 | { | |
67c0d1eb RS |
7902 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7903 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7904 | used_at = 1; |
7905 | } | |
67c0d1eb | 7906 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); |
8fc2e39e | 7907 | break; |
252b5132 RH |
7908 | |
7909 | case M_DSUB_I: | |
7910 | dbl = 1; | |
7911 | case M_SUB_I: | |
7912 | if (imm_expr.X_op == O_constant | |
7913 | && imm_expr.X_add_number > -0x8000 | |
7914 | && imm_expr.X_add_number <= 0x8000) | |
7915 | { | |
7916 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb RS |
7917 | macro_build (&imm_expr, dbl ? "daddi" : "addi", "t,r,j", |
7918 | dreg, sreg, BFD_RELOC_LO16); | |
8fc2e39e | 7919 | break; |
252b5132 | 7920 | } |
8fc2e39e | 7921 | used_at = 1; |
67c0d1eb RS |
7922 | load_register (AT, &imm_expr, dbl); |
7923 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7924 | break; |
7925 | ||
7926 | case M_DSUBU_I: | |
7927 | dbl = 1; | |
7928 | case M_SUBU_I: | |
7929 | if (imm_expr.X_op == O_constant | |
7930 | && imm_expr.X_add_number > -0x8000 | |
7931 | && imm_expr.X_add_number <= 0x8000) | |
7932 | { | |
7933 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb RS |
7934 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "t,r,j", |
7935 | dreg, sreg, BFD_RELOC_LO16); | |
8fc2e39e | 7936 | break; |
252b5132 | 7937 | } |
8fc2e39e | 7938 | used_at = 1; |
67c0d1eb RS |
7939 | load_register (AT, &imm_expr, dbl); |
7940 | macro_build (NULL, dbl ? "dsubu" : "subu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7941 | break; |
7942 | ||
7943 | case M_TEQ_I: | |
7944 | s = "teq"; | |
7945 | goto trap; | |
7946 | case M_TGE_I: | |
7947 | s = "tge"; | |
7948 | goto trap; | |
7949 | case M_TGEU_I: | |
7950 | s = "tgeu"; | |
7951 | goto trap; | |
7952 | case M_TLT_I: | |
7953 | s = "tlt"; | |
7954 | goto trap; | |
7955 | case M_TLTU_I: | |
7956 | s = "tltu"; | |
7957 | goto trap; | |
7958 | case M_TNE_I: | |
7959 | s = "tne"; | |
7960 | trap: | |
8fc2e39e | 7961 | used_at = 1; |
67c0d1eb RS |
7962 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7963 | macro_build (NULL, s, "s,t", sreg, AT); | |
252b5132 RH |
7964 | break; |
7965 | ||
252b5132 | 7966 | case M_TRUNCWS: |
43841e91 | 7967 | case M_TRUNCWD: |
9c2799c2 | 7968 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 7969 | used_at = 1; |
252b5132 RH |
7970 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
7971 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
7972 | ||
7973 | /* | |
7974 | * Is the double cfc1 instruction a bug in the mips assembler; | |
7975 | * or is there a reason for it? | |
7976 | */ | |
7d10b47d | 7977 | start_noreorder (); |
67c0d1eb RS |
7978 | macro_build (NULL, "cfc1", "t,G", treg, RA); |
7979 | macro_build (NULL, "cfc1", "t,G", treg, RA); | |
7980 | macro_build (NULL, "nop", ""); | |
252b5132 | 7981 | expr1.X_add_number = 3; |
67c0d1eb | 7982 | macro_build (&expr1, "ori", "t,r,i", AT, treg, BFD_RELOC_LO16); |
252b5132 | 7983 | expr1.X_add_number = 2; |
67c0d1eb RS |
7984 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
7985 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
7986 | macro_build (NULL, "nop", ""); | |
7987 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
7988 | dreg, sreg); | |
7989 | macro_build (NULL, "ctc1", "t,G", treg, RA); | |
7990 | macro_build (NULL, "nop", ""); | |
7d10b47d | 7991 | end_noreorder (); |
252b5132 RH |
7992 | break; |
7993 | ||
7994 | case M_ULH: | |
7995 | s = "lb"; | |
7996 | goto ulh; | |
7997 | case M_ULHU: | |
7998 | s = "lbu"; | |
7999 | ulh: | |
8fc2e39e | 8000 | used_at = 1; |
252b5132 RH |
8001 | if (offset_expr.X_add_number >= 0x7fff) |
8002 | as_bad (_("operand overflow")); | |
252b5132 | 8003 | if (! target_big_endian) |
f9419b05 | 8004 | ++offset_expr.X_add_number; |
67c0d1eb | 8005 | macro_build (&offset_expr, s, "t,o(b)", AT, BFD_RELOC_LO16, breg); |
252b5132 | 8006 | if (! target_big_endian) |
f9419b05 | 8007 | --offset_expr.X_add_number; |
252b5132 | 8008 | else |
f9419b05 | 8009 | ++offset_expr.X_add_number; |
67c0d1eb RS |
8010 | macro_build (&offset_expr, "lbu", "t,o(b)", treg, BFD_RELOC_LO16, breg); |
8011 | macro_build (NULL, "sll", "d,w,<", AT, AT, 8); | |
8012 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
8013 | break; |
8014 | ||
8015 | case M_ULD: | |
8016 | s = "ldl"; | |
8017 | s2 = "ldr"; | |
8018 | off = 7; | |
8019 | goto ulw; | |
8020 | case M_ULW: | |
8021 | s = "lwl"; | |
8022 | s2 = "lwr"; | |
8023 | off = 3; | |
8024 | ulw: | |
8025 | if (offset_expr.X_add_number >= 0x8000 - off) | |
8026 | as_bad (_("operand overflow")); | |
af22f5b2 CD |
8027 | if (treg != breg) |
8028 | tempreg = treg; | |
8029 | else | |
8fc2e39e TS |
8030 | { |
8031 | used_at = 1; | |
8032 | tempreg = AT; | |
8033 | } | |
252b5132 RH |
8034 | if (! target_big_endian) |
8035 | offset_expr.X_add_number += off; | |
67c0d1eb | 8036 | macro_build (&offset_expr, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); |
252b5132 RH |
8037 | if (! target_big_endian) |
8038 | offset_expr.X_add_number -= off; | |
8039 | else | |
8040 | offset_expr.X_add_number += off; | |
67c0d1eb | 8041 | macro_build (&offset_expr, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); |
af22f5b2 CD |
8042 | |
8043 | /* If necessary, move the result in tempreg the final destination. */ | |
8044 | if (treg == tempreg) | |
8fc2e39e | 8045 | break; |
af22f5b2 | 8046 | /* Protect second load's delay slot. */ |
017315e4 | 8047 | load_delay_nop (); |
67c0d1eb | 8048 | move_register (treg, tempreg); |
af22f5b2 | 8049 | break; |
252b5132 RH |
8050 | |
8051 | case M_ULD_A: | |
8052 | s = "ldl"; | |
8053 | s2 = "ldr"; | |
8054 | off = 7; | |
8055 | goto ulwa; | |
8056 | case M_ULW_A: | |
8057 | s = "lwl"; | |
8058 | s2 = "lwr"; | |
8059 | off = 3; | |
8060 | ulwa: | |
d6bc6245 | 8061 | used_at = 1; |
67c0d1eb | 8062 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 8063 | if (breg != 0) |
67c0d1eb | 8064 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
8065 | if (! target_big_endian) |
8066 | expr1.X_add_number = off; | |
8067 | else | |
8068 | expr1.X_add_number = 0; | |
67c0d1eb | 8069 | macro_build (&expr1, s, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8070 | if (! target_big_endian) |
8071 | expr1.X_add_number = 0; | |
8072 | else | |
8073 | expr1.X_add_number = off; | |
67c0d1eb | 8074 | macro_build (&expr1, s2, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8075 | break; |
8076 | ||
8077 | case M_ULH_A: | |
8078 | case M_ULHU_A: | |
d6bc6245 | 8079 | used_at = 1; |
67c0d1eb | 8080 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 8081 | if (breg != 0) |
67c0d1eb | 8082 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
8083 | if (target_big_endian) |
8084 | expr1.X_add_number = 0; | |
67c0d1eb | 8085 | macro_build (&expr1, mask == M_ULH_A ? "lb" : "lbu", "t,o(b)", |
17a2f251 | 8086 | treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8087 | if (target_big_endian) |
8088 | expr1.X_add_number = 1; | |
8089 | else | |
8090 | expr1.X_add_number = 0; | |
67c0d1eb RS |
8091 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); |
8092 | macro_build (NULL, "sll", "d,w,<", treg, treg, 8); | |
8093 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
8094 | break; |
8095 | ||
8096 | case M_USH: | |
8fc2e39e | 8097 | used_at = 1; |
252b5132 RH |
8098 | if (offset_expr.X_add_number >= 0x7fff) |
8099 | as_bad (_("operand overflow")); | |
8100 | if (target_big_endian) | |
f9419b05 | 8101 | ++offset_expr.X_add_number; |
67c0d1eb RS |
8102 | macro_build (&offset_expr, "sb", "t,o(b)", treg, BFD_RELOC_LO16, breg); |
8103 | macro_build (NULL, "srl", "d,w,<", AT, treg, 8); | |
252b5132 | 8104 | if (target_big_endian) |
f9419b05 | 8105 | --offset_expr.X_add_number; |
252b5132 | 8106 | else |
f9419b05 | 8107 | ++offset_expr.X_add_number; |
67c0d1eb | 8108 | macro_build (&offset_expr, "sb", "t,o(b)", AT, BFD_RELOC_LO16, breg); |
252b5132 RH |
8109 | break; |
8110 | ||
8111 | case M_USD: | |
8112 | s = "sdl"; | |
8113 | s2 = "sdr"; | |
8114 | off = 7; | |
8115 | goto usw; | |
8116 | case M_USW: | |
8117 | s = "swl"; | |
8118 | s2 = "swr"; | |
8119 | off = 3; | |
8120 | usw: | |
8121 | if (offset_expr.X_add_number >= 0x8000 - off) | |
8122 | as_bad (_("operand overflow")); | |
8123 | if (! target_big_endian) | |
8124 | offset_expr.X_add_number += off; | |
67c0d1eb | 8125 | macro_build (&offset_expr, s, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
252b5132 RH |
8126 | if (! target_big_endian) |
8127 | offset_expr.X_add_number -= off; | |
8128 | else | |
8129 | offset_expr.X_add_number += off; | |
67c0d1eb | 8130 | macro_build (&offset_expr, s2, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
8fc2e39e | 8131 | break; |
252b5132 RH |
8132 | |
8133 | case M_USD_A: | |
8134 | s = "sdl"; | |
8135 | s2 = "sdr"; | |
8136 | off = 7; | |
8137 | goto uswa; | |
8138 | case M_USW_A: | |
8139 | s = "swl"; | |
8140 | s2 = "swr"; | |
8141 | off = 3; | |
8142 | uswa: | |
d6bc6245 | 8143 | used_at = 1; |
67c0d1eb | 8144 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 8145 | if (breg != 0) |
67c0d1eb | 8146 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
8147 | if (! target_big_endian) |
8148 | expr1.X_add_number = off; | |
8149 | else | |
8150 | expr1.X_add_number = 0; | |
67c0d1eb | 8151 | macro_build (&expr1, s, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8152 | if (! target_big_endian) |
8153 | expr1.X_add_number = 0; | |
8154 | else | |
8155 | expr1.X_add_number = off; | |
67c0d1eb | 8156 | macro_build (&expr1, s2, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8157 | break; |
8158 | ||
8159 | case M_USH_A: | |
d6bc6245 | 8160 | used_at = 1; |
67c0d1eb | 8161 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 8162 | if (breg != 0) |
67c0d1eb | 8163 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
8164 | if (! target_big_endian) |
8165 | expr1.X_add_number = 0; | |
67c0d1eb RS |
8166 | macro_build (&expr1, "sb", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
8167 | macro_build (NULL, "srl", "d,w,<", treg, treg, 8); | |
252b5132 RH |
8168 | if (! target_big_endian) |
8169 | expr1.X_add_number = 1; | |
8170 | else | |
8171 | expr1.X_add_number = 0; | |
67c0d1eb | 8172 | macro_build (&expr1, "sb", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8173 | if (! target_big_endian) |
8174 | expr1.X_add_number = 0; | |
8175 | else | |
8176 | expr1.X_add_number = 1; | |
67c0d1eb RS |
8177 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); |
8178 | macro_build (NULL, "sll", "d,w,<", treg, treg, 8); | |
8179 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
8180 | break; |
8181 | ||
8182 | default: | |
8183 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 8184 | are added dynamically. */ |
252b5132 RH |
8185 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
8186 | break; | |
8187 | } | |
741fe287 | 8188 | if (!mips_opts.at && used_at) |
8fc2e39e | 8189 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
8190 | } |
8191 | ||
8192 | /* Implement macros in mips16 mode. */ | |
8193 | ||
8194 | static void | |
17a2f251 | 8195 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 RH |
8196 | { |
8197 | int mask; | |
8198 | int xreg, yreg, zreg, tmp; | |
252b5132 RH |
8199 | expressionS expr1; |
8200 | int dbl; | |
8201 | const char *s, *s2, *s3; | |
8202 | ||
8203 | mask = ip->insn_mo->mask; | |
8204 | ||
bf12938e RS |
8205 | xreg = MIPS16_EXTRACT_OPERAND (RX, *ip); |
8206 | yreg = MIPS16_EXTRACT_OPERAND (RY, *ip); | |
8207 | zreg = MIPS16_EXTRACT_OPERAND (RZ, *ip); | |
252b5132 | 8208 | |
252b5132 RH |
8209 | expr1.X_op = O_constant; |
8210 | expr1.X_op_symbol = NULL; | |
8211 | expr1.X_add_symbol = NULL; | |
8212 | expr1.X_add_number = 1; | |
8213 | ||
8214 | dbl = 0; | |
8215 | ||
8216 | switch (mask) | |
8217 | { | |
8218 | default: | |
8219 | internalError (); | |
8220 | ||
8221 | case M_DDIV_3: | |
8222 | dbl = 1; | |
8223 | case M_DIV_3: | |
8224 | s = "mflo"; | |
8225 | goto do_div3; | |
8226 | case M_DREM_3: | |
8227 | dbl = 1; | |
8228 | case M_REM_3: | |
8229 | s = "mfhi"; | |
8230 | do_div3: | |
7d10b47d | 8231 | start_noreorder (); |
67c0d1eb | 8232 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", xreg, yreg); |
252b5132 | 8233 | expr1.X_add_number = 2; |
67c0d1eb RS |
8234 | macro_build (&expr1, "bnez", "x,p", yreg); |
8235 | macro_build (NULL, "break", "6", 7); | |
bdaaa2e1 | 8236 | |
252b5132 RH |
8237 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
8238 | since that causes an overflow. We should do that as well, | |
8239 | but I don't see how to do the comparisons without a temporary | |
8240 | register. */ | |
7d10b47d | 8241 | end_noreorder (); |
67c0d1eb | 8242 | macro_build (NULL, s, "x", zreg); |
252b5132 RH |
8243 | break; |
8244 | ||
8245 | case M_DIVU_3: | |
8246 | s = "divu"; | |
8247 | s2 = "mflo"; | |
8248 | goto do_divu3; | |
8249 | case M_REMU_3: | |
8250 | s = "divu"; | |
8251 | s2 = "mfhi"; | |
8252 | goto do_divu3; | |
8253 | case M_DDIVU_3: | |
8254 | s = "ddivu"; | |
8255 | s2 = "mflo"; | |
8256 | goto do_divu3; | |
8257 | case M_DREMU_3: | |
8258 | s = "ddivu"; | |
8259 | s2 = "mfhi"; | |
8260 | do_divu3: | |
7d10b47d | 8261 | start_noreorder (); |
67c0d1eb | 8262 | macro_build (NULL, s, "0,x,y", xreg, yreg); |
252b5132 | 8263 | expr1.X_add_number = 2; |
67c0d1eb RS |
8264 | macro_build (&expr1, "bnez", "x,p", yreg); |
8265 | macro_build (NULL, "break", "6", 7); | |
7d10b47d | 8266 | end_noreorder (); |
67c0d1eb | 8267 | macro_build (NULL, s2, "x", zreg); |
252b5132 RH |
8268 | break; |
8269 | ||
8270 | case M_DMUL: | |
8271 | dbl = 1; | |
8272 | case M_MUL: | |
67c0d1eb RS |
8273 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
8274 | macro_build (NULL, "mflo", "x", zreg); | |
8fc2e39e | 8275 | break; |
252b5132 RH |
8276 | |
8277 | case M_DSUBU_I: | |
8278 | dbl = 1; | |
8279 | goto do_subu; | |
8280 | case M_SUBU_I: | |
8281 | do_subu: | |
8282 | if (imm_expr.X_op != O_constant) | |
8283 | as_bad (_("Unsupported large constant")); | |
8284 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 8285 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
8286 | break; |
8287 | ||
8288 | case M_SUBU_I_2: | |
8289 | if (imm_expr.X_op != O_constant) | |
8290 | as_bad (_("Unsupported large constant")); | |
8291 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 8292 | macro_build (&imm_expr, "addiu", "x,k", xreg); |
252b5132 RH |
8293 | break; |
8294 | ||
8295 | case M_DSUBU_I_2: | |
8296 | if (imm_expr.X_op != O_constant) | |
8297 | as_bad (_("Unsupported large constant")); | |
8298 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 8299 | macro_build (&imm_expr, "daddiu", "y,j", yreg); |
252b5132 RH |
8300 | break; |
8301 | ||
8302 | case M_BEQ: | |
8303 | s = "cmp"; | |
8304 | s2 = "bteqz"; | |
8305 | goto do_branch; | |
8306 | case M_BNE: | |
8307 | s = "cmp"; | |
8308 | s2 = "btnez"; | |
8309 | goto do_branch; | |
8310 | case M_BLT: | |
8311 | s = "slt"; | |
8312 | s2 = "btnez"; | |
8313 | goto do_branch; | |
8314 | case M_BLTU: | |
8315 | s = "sltu"; | |
8316 | s2 = "btnez"; | |
8317 | goto do_branch; | |
8318 | case M_BLE: | |
8319 | s = "slt"; | |
8320 | s2 = "bteqz"; | |
8321 | goto do_reverse_branch; | |
8322 | case M_BLEU: | |
8323 | s = "sltu"; | |
8324 | s2 = "bteqz"; | |
8325 | goto do_reverse_branch; | |
8326 | case M_BGE: | |
8327 | s = "slt"; | |
8328 | s2 = "bteqz"; | |
8329 | goto do_branch; | |
8330 | case M_BGEU: | |
8331 | s = "sltu"; | |
8332 | s2 = "bteqz"; | |
8333 | goto do_branch; | |
8334 | case M_BGT: | |
8335 | s = "slt"; | |
8336 | s2 = "btnez"; | |
8337 | goto do_reverse_branch; | |
8338 | case M_BGTU: | |
8339 | s = "sltu"; | |
8340 | s2 = "btnez"; | |
8341 | ||
8342 | do_reverse_branch: | |
8343 | tmp = xreg; | |
8344 | xreg = yreg; | |
8345 | yreg = tmp; | |
8346 | ||
8347 | do_branch: | |
67c0d1eb RS |
8348 | macro_build (NULL, s, "x,y", xreg, yreg); |
8349 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
8350 | break; |
8351 | ||
8352 | case M_BEQ_I: | |
8353 | s = "cmpi"; | |
8354 | s2 = "bteqz"; | |
8355 | s3 = "x,U"; | |
8356 | goto do_branch_i; | |
8357 | case M_BNE_I: | |
8358 | s = "cmpi"; | |
8359 | s2 = "btnez"; | |
8360 | s3 = "x,U"; | |
8361 | goto do_branch_i; | |
8362 | case M_BLT_I: | |
8363 | s = "slti"; | |
8364 | s2 = "btnez"; | |
8365 | s3 = "x,8"; | |
8366 | goto do_branch_i; | |
8367 | case M_BLTU_I: | |
8368 | s = "sltiu"; | |
8369 | s2 = "btnez"; | |
8370 | s3 = "x,8"; | |
8371 | goto do_branch_i; | |
8372 | case M_BLE_I: | |
8373 | s = "slti"; | |
8374 | s2 = "btnez"; | |
8375 | s3 = "x,8"; | |
8376 | goto do_addone_branch_i; | |
8377 | case M_BLEU_I: | |
8378 | s = "sltiu"; | |
8379 | s2 = "btnez"; | |
8380 | s3 = "x,8"; | |
8381 | goto do_addone_branch_i; | |
8382 | case M_BGE_I: | |
8383 | s = "slti"; | |
8384 | s2 = "bteqz"; | |
8385 | s3 = "x,8"; | |
8386 | goto do_branch_i; | |
8387 | case M_BGEU_I: | |
8388 | s = "sltiu"; | |
8389 | s2 = "bteqz"; | |
8390 | s3 = "x,8"; | |
8391 | goto do_branch_i; | |
8392 | case M_BGT_I: | |
8393 | s = "slti"; | |
8394 | s2 = "bteqz"; | |
8395 | s3 = "x,8"; | |
8396 | goto do_addone_branch_i; | |
8397 | case M_BGTU_I: | |
8398 | s = "sltiu"; | |
8399 | s2 = "bteqz"; | |
8400 | s3 = "x,8"; | |
8401 | ||
8402 | do_addone_branch_i: | |
8403 | if (imm_expr.X_op != O_constant) | |
8404 | as_bad (_("Unsupported large constant")); | |
8405 | ++imm_expr.X_add_number; | |
8406 | ||
8407 | do_branch_i: | |
67c0d1eb RS |
8408 | macro_build (&imm_expr, s, s3, xreg); |
8409 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
8410 | break; |
8411 | ||
8412 | case M_ABS: | |
8413 | expr1.X_add_number = 0; | |
67c0d1eb | 8414 | macro_build (&expr1, "slti", "x,8", yreg); |
252b5132 | 8415 | if (xreg != yreg) |
67c0d1eb | 8416 | move_register (xreg, yreg); |
252b5132 | 8417 | expr1.X_add_number = 2; |
67c0d1eb RS |
8418 | macro_build (&expr1, "bteqz", "p"); |
8419 | macro_build (NULL, "neg", "x,w", xreg, xreg); | |
252b5132 RH |
8420 | } |
8421 | } | |
8422 | ||
8423 | /* For consistency checking, verify that all bits are specified either | |
8424 | by the match/mask part of the instruction definition, or by the | |
8425 | operand list. */ | |
8426 | static int | |
17a2f251 | 8427 | validate_mips_insn (const struct mips_opcode *opc) |
252b5132 RH |
8428 | { |
8429 | const char *p = opc->args; | |
8430 | char c; | |
8431 | unsigned long used_bits = opc->mask; | |
8432 | ||
8433 | if ((used_bits & opc->match) != opc->match) | |
8434 | { | |
8435 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
8436 | opc->name, opc->args); | |
8437 | return 0; | |
8438 | } | |
8439 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
8440 | while (*p) | |
8441 | switch (c = *p++) | |
8442 | { | |
8443 | case ',': break; | |
8444 | case '(': break; | |
8445 | case ')': break; | |
af7ee8bf CD |
8446 | case '+': |
8447 | switch (c = *p++) | |
8448 | { | |
9bcd4f99 TS |
8449 | case '1': USE_BITS (OP_MASK_UDI1, OP_SH_UDI1); break; |
8450 | case '2': USE_BITS (OP_MASK_UDI2, OP_SH_UDI2); break; | |
8451 | case '3': USE_BITS (OP_MASK_UDI3, OP_SH_UDI3); break; | |
8452 | case '4': USE_BITS (OP_MASK_UDI4, OP_SH_UDI4); break; | |
af7ee8bf CD |
8453 | case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8454 | case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
8455 | case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
bbcc0807 CD |
8456 | case 'D': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8457 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
5f74bc13 CD |
8458 | case 'E': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8459 | case 'F': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
8460 | case 'G': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
8461 | case 'H': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
8462 | case 'I': break; | |
ef2e4d86 CF |
8463 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; |
8464 | case 'T': USE_BITS (OP_MASK_RT, OP_SH_RT); | |
8465 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
bb35fb24 NC |
8466 | case 'x': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; |
8467 | case 'X': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; | |
8468 | case 'p': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
8469 | case 'P': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
dd3cbb7e | 8470 | case 'Q': USE_BITS (OP_MASK_SEQI, OP_SH_SEQI); break; |
bb35fb24 NC |
8471 | case 's': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; |
8472 | case 'S': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; | |
8473 | ||
af7ee8bf CD |
8474 | default: |
8475 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
8476 | c, opc->name, opc->args); | |
8477 | return 0; | |
8478 | } | |
8479 | break; | |
252b5132 RH |
8480 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8481 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
8482 | case 'A': break; | |
4372b673 | 8483 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
8484 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
8485 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
8486 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8487 | case 'F': break; | |
8488 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 8489 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 8490 | case 'I': break; |
e972090a | 8491 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
af7ee8bf | 8492 | case 'K': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
8493 | case 'L': break; |
8494 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
8495 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
8496 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
8497 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
8498 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8499 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
8500 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8501 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
8502 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8503 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
8504 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
8505 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8506 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8507 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
8508 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8509 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
8510 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
8511 | case 'f': break; | |
8512 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
8513 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8514 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8515 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
8516 | case 'l': break; | |
8517 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8518 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8519 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
8520 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8521 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8522 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8523 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8524 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8525 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8526 | case 'x': break; | |
8527 | case 'z': break; | |
8528 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
8529 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8530 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
60b63b72 RS |
8531 | case 'e': USE_BITS (OP_MASK_VECBYTE, OP_SH_VECBYTE); break; |
8532 | case '%': USE_BITS (OP_MASK_VECALIGN, OP_SH_VECALIGN); break; | |
8533 | case '[': break; | |
8534 | case ']': break; | |
620edafd | 8535 | case '1': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8b082fb1 | 8536 | case '2': USE_BITS (OP_MASK_BP, OP_SH_BP); break; |
74cd071d CF |
8537 | case '3': USE_BITS (OP_MASK_SA3, OP_SH_SA3); break; |
8538 | case '4': USE_BITS (OP_MASK_SA4, OP_SH_SA4); break; | |
8539 | case '5': USE_BITS (OP_MASK_IMM8, OP_SH_IMM8); break; | |
8540 | case '6': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8541 | case '7': USE_BITS (OP_MASK_DSPACC, OP_SH_DSPACC); break; | |
8542 | case '8': USE_BITS (OP_MASK_WRDSP, OP_SH_WRDSP); break; | |
8543 | case '9': USE_BITS (OP_MASK_DSPACC_S, OP_SH_DSPACC_S);break; | |
8544 | case '0': USE_BITS (OP_MASK_DSPSFT, OP_SH_DSPSFT); break; | |
8545 | case '\'': USE_BITS (OP_MASK_RDDSP, OP_SH_RDDSP); break; | |
8546 | case ':': USE_BITS (OP_MASK_DSPSFT_7, OP_SH_DSPSFT_7);break; | |
8547 | case '@': USE_BITS (OP_MASK_IMM10, OP_SH_IMM10); break; | |
ef2e4d86 CF |
8548 | case '!': USE_BITS (OP_MASK_MT_U, OP_SH_MT_U); break; |
8549 | case '$': USE_BITS (OP_MASK_MT_H, OP_SH_MT_H); break; | |
8550 | case '*': USE_BITS (OP_MASK_MTACC_T, OP_SH_MTACC_T); break; | |
8551 | case '&': USE_BITS (OP_MASK_MTACC_D, OP_SH_MTACC_D); break; | |
8552 | case 'g': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
252b5132 RH |
8553 | default: |
8554 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
8555 | c, opc->name, opc->args); | |
8556 | return 0; | |
8557 | } | |
8558 | #undef USE_BITS | |
8559 | if (used_bits != 0xffffffff) | |
8560 | { | |
8561 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
8562 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
8563 | return 0; | |
8564 | } | |
8565 | return 1; | |
8566 | } | |
8567 | ||
9bcd4f99 TS |
8568 | /* UDI immediates. */ |
8569 | struct mips_immed { | |
8570 | char type; | |
8571 | unsigned int shift; | |
8572 | unsigned long mask; | |
8573 | const char * desc; | |
8574 | }; | |
8575 | ||
8576 | static const struct mips_immed mips_immed[] = { | |
8577 | { '1', OP_SH_UDI1, OP_MASK_UDI1, 0}, | |
8578 | { '2', OP_SH_UDI2, OP_MASK_UDI2, 0}, | |
8579 | { '3', OP_SH_UDI3, OP_MASK_UDI3, 0}, | |
8580 | { '4', OP_SH_UDI4, OP_MASK_UDI4, 0}, | |
8581 | { 0,0,0,0 } | |
8582 | }; | |
8583 | ||
7455baf8 TS |
8584 | /* Check whether an odd floating-point register is allowed. */ |
8585 | static int | |
8586 | mips_oddfpreg_ok (const struct mips_opcode *insn, int argnum) | |
8587 | { | |
8588 | const char *s = insn->name; | |
8589 | ||
8590 | if (insn->pinfo == INSN_MACRO) | |
8591 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
8592 | return 1; | |
8593 | ||
8594 | if (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa)) | |
8595 | { | |
8596 | /* Allow odd registers for single-precision ops. */ | |
8597 | switch (insn->pinfo & (FP_S | FP_D)) | |
8598 | { | |
8599 | case FP_S: | |
8600 | case 0: | |
8601 | return 1; /* both single precision - ok */ | |
8602 | case FP_D: | |
8603 | return 0; /* both double precision - fail */ | |
8604 | default: | |
8605 | break; | |
8606 | } | |
8607 | ||
8608 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ | |
8609 | s = strchr (insn->name, '.'); | |
8610 | if (argnum == 2) | |
8611 | s = s != NULL ? strchr (s + 1, '.') : NULL; | |
8612 | return (s != NULL && (s[1] == 'w' || s[1] == 's')); | |
8613 | } | |
8614 | ||
8615 | /* Single-precision coprocessor loads and moves are OK too. */ | |
8616 | if ((insn->pinfo & FP_S) | |
8617 | && (insn->pinfo & (INSN_COPROC_MEMORY_DELAY | INSN_STORE_MEMORY | |
8618 | | INSN_LOAD_COPROC_DELAY | INSN_COPROC_MOVE_DELAY))) | |
8619 | return 1; | |
8620 | ||
8621 | return 0; | |
8622 | } | |
8623 | ||
252b5132 RH |
8624 | /* This routine assembles an instruction into its binary format. As a |
8625 | side effect, it sets one of the global variables imm_reloc or | |
8626 | offset_reloc to the type of relocation to do if one of the operands | |
8627 | is an address expression. */ | |
8628 | ||
8629 | static void | |
17a2f251 | 8630 | mips_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
8631 | { |
8632 | char *s; | |
8633 | const char *args; | |
43841e91 | 8634 | char c = 0; |
252b5132 RH |
8635 | struct mips_opcode *insn; |
8636 | char *argsStart; | |
8637 | unsigned int regno; | |
8638 | unsigned int lastregno = 0; | |
af7ee8bf | 8639 | unsigned int lastpos = 0; |
071742cf | 8640 | unsigned int limlo, limhi; |
252b5132 RH |
8641 | char *s_reset; |
8642 | char save_c = 0; | |
74cd071d | 8643 | offsetT min_range, max_range; |
707bfff6 TS |
8644 | int argnum; |
8645 | unsigned int rtype; | |
252b5132 RH |
8646 | |
8647 | insn_error = NULL; | |
8648 | ||
8649 | /* If the instruction contains a '.', we first try to match an instruction | |
8650 | including the '.'. Then we try again without the '.'. */ | |
8651 | insn = NULL; | |
3882b010 | 8652 | for (s = str; *s != '\0' && !ISSPACE (*s); ++s) |
252b5132 RH |
8653 | continue; |
8654 | ||
8655 | /* If we stopped on whitespace, then replace the whitespace with null for | |
8656 | the call to hash_find. Save the character we replaced just in case we | |
8657 | have to re-parse the instruction. */ | |
3882b010 | 8658 | if (ISSPACE (*s)) |
252b5132 RH |
8659 | { |
8660 | save_c = *s; | |
8661 | *s++ = '\0'; | |
8662 | } | |
bdaaa2e1 | 8663 | |
252b5132 RH |
8664 | insn = (struct mips_opcode *) hash_find (op_hash, str); |
8665 | ||
8666 | /* If we didn't find the instruction in the opcode table, try again, but | |
8667 | this time with just the instruction up to, but not including the | |
8668 | first '.'. */ | |
8669 | if (insn == NULL) | |
8670 | { | |
bdaaa2e1 | 8671 | /* Restore the character we overwrite above (if any). */ |
252b5132 RH |
8672 | if (save_c) |
8673 | *(--s) = save_c; | |
8674 | ||
8675 | /* Scan up to the first '.' or whitespace. */ | |
3882b010 L |
8676 | for (s = str; |
8677 | *s != '\0' && *s != '.' && !ISSPACE (*s); | |
8678 | ++s) | |
252b5132 RH |
8679 | continue; |
8680 | ||
8681 | /* If we did not find a '.', then we can quit now. */ | |
8682 | if (*s != '.') | |
8683 | { | |
20203fb9 | 8684 | insn_error = _("unrecognized opcode"); |
252b5132 RH |
8685 | return; |
8686 | } | |
8687 | ||
8688 | /* Lookup the instruction in the hash table. */ | |
8689 | *s++ = '\0'; | |
8690 | if ((insn = (struct mips_opcode *) hash_find (op_hash, str)) == NULL) | |
8691 | { | |
20203fb9 | 8692 | insn_error = _("unrecognized opcode"); |
252b5132 RH |
8693 | return; |
8694 | } | |
252b5132 RH |
8695 | } |
8696 | ||
8697 | argsStart = s; | |
8698 | for (;;) | |
8699 | { | |
b34976b6 | 8700 | bfd_boolean ok; |
252b5132 | 8701 | |
9c2799c2 | 8702 | gas_assert (strcmp (insn->name, str) == 0); |
252b5132 | 8703 | |
f79e2745 | 8704 | ok = is_opcode_valid (insn); |
252b5132 RH |
8705 | if (! ok) |
8706 | { | |
8707 | if (insn + 1 < &mips_opcodes[NUMOPCODES] | |
8708 | && strcmp (insn->name, insn[1].name) == 0) | |
8709 | { | |
8710 | ++insn; | |
8711 | continue; | |
8712 | } | |
252b5132 | 8713 | else |
beae10d5 | 8714 | { |
268f6bed L |
8715 | if (!insn_error) |
8716 | { | |
8717 | static char buf[100]; | |
fef14a42 TS |
8718 | sprintf (buf, |
8719 | _("opcode not supported on this processor: %s (%s)"), | |
8720 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
8721 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
268f6bed L |
8722 | insn_error = buf; |
8723 | } | |
8724 | if (save_c) | |
8725 | *(--s) = save_c; | |
2bd7f1f3 | 8726 | return; |
252b5132 | 8727 | } |
252b5132 RH |
8728 | } |
8729 | ||
1e915849 | 8730 | create_insn (ip, insn); |
268f6bed | 8731 | insn_error = NULL; |
707bfff6 | 8732 | argnum = 1; |
24864476 | 8733 | lastregno = 0xffffffff; |
252b5132 RH |
8734 | for (args = insn->args;; ++args) |
8735 | { | |
deec1734 CD |
8736 | int is_mdmx; |
8737 | ||
ad8d3bb3 | 8738 | s += strspn (s, " \t"); |
deec1734 | 8739 | is_mdmx = 0; |
252b5132 RH |
8740 | switch (*args) |
8741 | { | |
8742 | case '\0': /* end of args */ | |
8743 | if (*s == '\0') | |
8744 | return; | |
8745 | break; | |
8746 | ||
8b082fb1 TS |
8747 | case '2': /* dsp 2-bit unsigned immediate in bit 11 */ |
8748 | my_getExpression (&imm_expr, s); | |
8749 | check_absolute_expr (ip, &imm_expr); | |
8750 | if ((unsigned long) imm_expr.X_add_number != 1 | |
8751 | && (unsigned long) imm_expr.X_add_number != 3) | |
8752 | { | |
8753 | as_bad (_("BALIGN immediate not 1 or 3 (%lu)"), | |
8754 | (unsigned long) imm_expr.X_add_number); | |
8755 | } | |
8756 | INSERT_OPERAND (BP, *ip, imm_expr.X_add_number); | |
8757 | imm_expr.X_op = O_absent; | |
8758 | s = expr_end; | |
8759 | continue; | |
8760 | ||
74cd071d CF |
8761 | case '3': /* dsp 3-bit unsigned immediate in bit 21 */ |
8762 | my_getExpression (&imm_expr, s); | |
8763 | check_absolute_expr (ip, &imm_expr); | |
8764 | if (imm_expr.X_add_number & ~OP_MASK_SA3) | |
8765 | { | |
a9e24354 TS |
8766 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8767 | OP_MASK_SA3, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8768 | } |
a9e24354 | 8769 | INSERT_OPERAND (SA3, *ip, imm_expr.X_add_number); |
74cd071d CF |
8770 | imm_expr.X_op = O_absent; |
8771 | s = expr_end; | |
8772 | continue; | |
8773 | ||
8774 | case '4': /* dsp 4-bit unsigned immediate in bit 21 */ | |
8775 | my_getExpression (&imm_expr, s); | |
8776 | check_absolute_expr (ip, &imm_expr); | |
8777 | if (imm_expr.X_add_number & ~OP_MASK_SA4) | |
8778 | { | |
a9e24354 TS |
8779 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8780 | OP_MASK_SA4, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8781 | } |
a9e24354 | 8782 | INSERT_OPERAND (SA4, *ip, imm_expr.X_add_number); |
74cd071d CF |
8783 | imm_expr.X_op = O_absent; |
8784 | s = expr_end; | |
8785 | continue; | |
8786 | ||
8787 | case '5': /* dsp 8-bit unsigned immediate in bit 16 */ | |
8788 | my_getExpression (&imm_expr, s); | |
8789 | check_absolute_expr (ip, &imm_expr); | |
8790 | if (imm_expr.X_add_number & ~OP_MASK_IMM8) | |
8791 | { | |
a9e24354 TS |
8792 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8793 | OP_MASK_IMM8, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8794 | } |
a9e24354 | 8795 | INSERT_OPERAND (IMM8, *ip, imm_expr.X_add_number); |
74cd071d CF |
8796 | imm_expr.X_op = O_absent; |
8797 | s = expr_end; | |
8798 | continue; | |
8799 | ||
8800 | case '6': /* dsp 5-bit unsigned immediate in bit 21 */ | |
8801 | my_getExpression (&imm_expr, s); | |
8802 | check_absolute_expr (ip, &imm_expr); | |
8803 | if (imm_expr.X_add_number & ~OP_MASK_RS) | |
8804 | { | |
a9e24354 TS |
8805 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8806 | OP_MASK_RS, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8807 | } |
a9e24354 | 8808 | INSERT_OPERAND (RS, *ip, imm_expr.X_add_number); |
74cd071d CF |
8809 | imm_expr.X_op = O_absent; |
8810 | s = expr_end; | |
8811 | continue; | |
8812 | ||
8813 | case '7': /* four dsp accumulators in bits 11,12 */ | |
8814 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8815 | s[3] >= '0' && s[3] <= '3') | |
8816 | { | |
8817 | regno = s[3] - '0'; | |
8818 | s += 4; | |
a9e24354 | 8819 | INSERT_OPERAND (DSPACC, *ip, regno); |
74cd071d CF |
8820 | continue; |
8821 | } | |
8822 | else | |
8823 | as_bad (_("Invalid dsp acc register")); | |
8824 | break; | |
8825 | ||
8826 | case '8': /* dsp 6-bit unsigned immediate in bit 11 */ | |
8827 | my_getExpression (&imm_expr, s); | |
8828 | check_absolute_expr (ip, &imm_expr); | |
8829 | if (imm_expr.X_add_number & ~OP_MASK_WRDSP) | |
8830 | { | |
a9e24354 TS |
8831 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8832 | OP_MASK_WRDSP, | |
8833 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8834 | } |
a9e24354 | 8835 | INSERT_OPERAND (WRDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
8836 | imm_expr.X_op = O_absent; |
8837 | s = expr_end; | |
8838 | continue; | |
8839 | ||
8840 | case '9': /* four dsp accumulators in bits 21,22 */ | |
8841 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8842 | s[3] >= '0' && s[3] <= '3') | |
8843 | { | |
8844 | regno = s[3] - '0'; | |
8845 | s += 4; | |
a9e24354 | 8846 | INSERT_OPERAND (DSPACC_S, *ip, regno); |
74cd071d CF |
8847 | continue; |
8848 | } | |
8849 | else | |
8850 | as_bad (_("Invalid dsp acc register")); | |
8851 | break; | |
8852 | ||
8853 | case '0': /* dsp 6-bit signed immediate in bit 20 */ | |
8854 | my_getExpression (&imm_expr, s); | |
8855 | check_absolute_expr (ip, &imm_expr); | |
8856 | min_range = -((OP_MASK_DSPSFT + 1) >> 1); | |
8857 | max_range = ((OP_MASK_DSPSFT + 1) >> 1) - 1; | |
8858 | if (imm_expr.X_add_number < min_range || | |
8859 | imm_expr.X_add_number > max_range) | |
8860 | { | |
a9e24354 TS |
8861 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8862 | (long) min_range, (long) max_range, | |
8863 | (long) imm_expr.X_add_number); | |
74cd071d | 8864 | } |
a9e24354 | 8865 | INSERT_OPERAND (DSPSFT, *ip, imm_expr.X_add_number); |
74cd071d CF |
8866 | imm_expr.X_op = O_absent; |
8867 | s = expr_end; | |
8868 | continue; | |
8869 | ||
8870 | case '\'': /* dsp 6-bit unsigned immediate in bit 16 */ | |
8871 | my_getExpression (&imm_expr, s); | |
8872 | check_absolute_expr (ip, &imm_expr); | |
8873 | if (imm_expr.X_add_number & ~OP_MASK_RDDSP) | |
8874 | { | |
a9e24354 TS |
8875 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8876 | OP_MASK_RDDSP, | |
8877 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8878 | } |
a9e24354 | 8879 | INSERT_OPERAND (RDDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
8880 | imm_expr.X_op = O_absent; |
8881 | s = expr_end; | |
8882 | continue; | |
8883 | ||
8884 | case ':': /* dsp 7-bit signed immediate in bit 19 */ | |
8885 | my_getExpression (&imm_expr, s); | |
8886 | check_absolute_expr (ip, &imm_expr); | |
8887 | min_range = -((OP_MASK_DSPSFT_7 + 1) >> 1); | |
8888 | max_range = ((OP_MASK_DSPSFT_7 + 1) >> 1) - 1; | |
8889 | if (imm_expr.X_add_number < min_range || | |
8890 | imm_expr.X_add_number > max_range) | |
8891 | { | |
a9e24354 TS |
8892 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8893 | (long) min_range, (long) max_range, | |
8894 | (long) imm_expr.X_add_number); | |
74cd071d | 8895 | } |
a9e24354 | 8896 | INSERT_OPERAND (DSPSFT_7, *ip, imm_expr.X_add_number); |
74cd071d CF |
8897 | imm_expr.X_op = O_absent; |
8898 | s = expr_end; | |
8899 | continue; | |
8900 | ||
8901 | case '@': /* dsp 10-bit signed immediate in bit 16 */ | |
8902 | my_getExpression (&imm_expr, s); | |
8903 | check_absolute_expr (ip, &imm_expr); | |
8904 | min_range = -((OP_MASK_IMM10 + 1) >> 1); | |
8905 | max_range = ((OP_MASK_IMM10 + 1) >> 1) - 1; | |
8906 | if (imm_expr.X_add_number < min_range || | |
8907 | imm_expr.X_add_number > max_range) | |
8908 | { | |
a9e24354 TS |
8909 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8910 | (long) min_range, (long) max_range, | |
8911 | (long) imm_expr.X_add_number); | |
74cd071d | 8912 | } |
a9e24354 | 8913 | INSERT_OPERAND (IMM10, *ip, imm_expr.X_add_number); |
74cd071d CF |
8914 | imm_expr.X_op = O_absent; |
8915 | s = expr_end; | |
8916 | continue; | |
8917 | ||
a9e24354 | 8918 | case '!': /* MT usermode flag bit. */ |
ef2e4d86 CF |
8919 | my_getExpression (&imm_expr, s); |
8920 | check_absolute_expr (ip, &imm_expr); | |
8921 | if (imm_expr.X_add_number & ~OP_MASK_MT_U) | |
a9e24354 TS |
8922 | as_bad (_("MT usermode bit not 0 or 1 (%lu)"), |
8923 | (unsigned long) imm_expr.X_add_number); | |
8924 | INSERT_OPERAND (MT_U, *ip, imm_expr.X_add_number); | |
ef2e4d86 CF |
8925 | imm_expr.X_op = O_absent; |
8926 | s = expr_end; | |
8927 | continue; | |
8928 | ||
a9e24354 | 8929 | case '$': /* MT load high flag bit. */ |
ef2e4d86 CF |
8930 | my_getExpression (&imm_expr, s); |
8931 | check_absolute_expr (ip, &imm_expr); | |
8932 | if (imm_expr.X_add_number & ~OP_MASK_MT_H) | |
a9e24354 TS |
8933 | as_bad (_("MT load high bit not 0 or 1 (%lu)"), |
8934 | (unsigned long) imm_expr.X_add_number); | |
8935 | INSERT_OPERAND (MT_H, *ip, imm_expr.X_add_number); | |
ef2e4d86 CF |
8936 | imm_expr.X_op = O_absent; |
8937 | s = expr_end; | |
8938 | continue; | |
8939 | ||
8940 | case '*': /* four dsp accumulators in bits 18,19 */ | |
8941 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8942 | s[3] >= '0' && s[3] <= '3') | |
8943 | { | |
8944 | regno = s[3] - '0'; | |
8945 | s += 4; | |
a9e24354 | 8946 | INSERT_OPERAND (MTACC_T, *ip, regno); |
ef2e4d86 CF |
8947 | continue; |
8948 | } | |
8949 | else | |
8950 | as_bad (_("Invalid dsp/smartmips acc register")); | |
8951 | break; | |
8952 | ||
8953 | case '&': /* four dsp accumulators in bits 13,14 */ | |
8954 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8955 | s[3] >= '0' && s[3] <= '3') | |
8956 | { | |
8957 | regno = s[3] - '0'; | |
8958 | s += 4; | |
a9e24354 | 8959 | INSERT_OPERAND (MTACC_D, *ip, regno); |
ef2e4d86 CF |
8960 | continue; |
8961 | } | |
8962 | else | |
8963 | as_bad (_("Invalid dsp/smartmips acc register")); | |
8964 | break; | |
8965 | ||
252b5132 | 8966 | case ',': |
a339155f | 8967 | ++argnum; |
252b5132 RH |
8968 | if (*s++ == *args) |
8969 | continue; | |
8970 | s--; | |
8971 | switch (*++args) | |
8972 | { | |
8973 | case 'r': | |
8974 | case 'v': | |
bf12938e | 8975 | INSERT_OPERAND (RS, *ip, lastregno); |
252b5132 RH |
8976 | continue; |
8977 | ||
8978 | case 'w': | |
bf12938e | 8979 | INSERT_OPERAND (RT, *ip, lastregno); |
38487616 TS |
8980 | continue; |
8981 | ||
252b5132 | 8982 | case 'W': |
bf12938e | 8983 | INSERT_OPERAND (FT, *ip, lastregno); |
252b5132 RH |
8984 | continue; |
8985 | ||
8986 | case 'V': | |
bf12938e | 8987 | INSERT_OPERAND (FS, *ip, lastregno); |
252b5132 RH |
8988 | continue; |
8989 | } | |
8990 | break; | |
8991 | ||
8992 | case '(': | |
8993 | /* Handle optional base register. | |
8994 | Either the base register is omitted or | |
bdaaa2e1 | 8995 | we must have a left paren. */ |
252b5132 RH |
8996 | /* This is dependent on the next operand specifier |
8997 | is a base register specification. */ | |
9c2799c2 | 8998 | gas_assert (args[1] == 'b' || args[1] == '5' |
252b5132 RH |
8999 | || args[1] == '-' || args[1] == '4'); |
9000 | if (*s == '\0') | |
9001 | return; | |
9002 | ||
9003 | case ')': /* these must match exactly */ | |
60b63b72 RS |
9004 | case '[': |
9005 | case ']': | |
252b5132 RH |
9006 | if (*s++ == *args) |
9007 | continue; | |
9008 | break; | |
9009 | ||
af7ee8bf CD |
9010 | case '+': /* Opcode extension character. */ |
9011 | switch (*++args) | |
9012 | { | |
9bcd4f99 TS |
9013 | case '1': /* UDI immediates. */ |
9014 | case '2': | |
9015 | case '3': | |
9016 | case '4': | |
9017 | { | |
9018 | const struct mips_immed *imm = mips_immed; | |
9019 | ||
9020 | while (imm->type && imm->type != *args) | |
9021 | ++imm; | |
9022 | if (! imm->type) | |
9023 | internalError (); | |
9024 | my_getExpression (&imm_expr, s); | |
9025 | check_absolute_expr (ip, &imm_expr); | |
9026 | if ((unsigned long) imm_expr.X_add_number & ~imm->mask) | |
9027 | { | |
9028 | as_warn (_("Illegal %s number (%lu, 0x%lx)"), | |
9029 | imm->desc ? imm->desc : ip->insn_mo->name, | |
9030 | (unsigned long) imm_expr.X_add_number, | |
9031 | (unsigned long) imm_expr.X_add_number); | |
9032 | imm_expr.X_add_number &= imm->mask; | |
9033 | } | |
9034 | ip->insn_opcode |= ((unsigned long) imm_expr.X_add_number | |
9035 | << imm->shift); | |
9036 | imm_expr.X_op = O_absent; | |
9037 | s = expr_end; | |
9038 | } | |
9039 | continue; | |
9040 | ||
071742cf CD |
9041 | case 'A': /* ins/ext position, becomes LSB. */ |
9042 | limlo = 0; | |
9043 | limhi = 31; | |
5f74bc13 CD |
9044 | goto do_lsb; |
9045 | case 'E': | |
9046 | limlo = 32; | |
9047 | limhi = 63; | |
9048 | goto do_lsb; | |
9049 | do_lsb: | |
071742cf CD |
9050 | my_getExpression (&imm_expr, s); |
9051 | check_absolute_expr (ip, &imm_expr); | |
9052 | if ((unsigned long) imm_expr.X_add_number < limlo | |
9053 | || (unsigned long) imm_expr.X_add_number > limhi) | |
9054 | { | |
9055 | as_bad (_("Improper position (%lu)"), | |
9056 | (unsigned long) imm_expr.X_add_number); | |
9057 | imm_expr.X_add_number = limlo; | |
9058 | } | |
9059 | lastpos = imm_expr.X_add_number; | |
bf12938e | 9060 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); |
071742cf CD |
9061 | imm_expr.X_op = O_absent; |
9062 | s = expr_end; | |
9063 | continue; | |
9064 | ||
9065 | case 'B': /* ins size, becomes MSB. */ | |
9066 | limlo = 1; | |
9067 | limhi = 32; | |
5f74bc13 CD |
9068 | goto do_msb; |
9069 | case 'F': | |
9070 | limlo = 33; | |
9071 | limhi = 64; | |
9072 | goto do_msb; | |
9073 | do_msb: | |
071742cf CD |
9074 | my_getExpression (&imm_expr, s); |
9075 | check_absolute_expr (ip, &imm_expr); | |
9076 | /* Check for negative input so that small negative numbers | |
9077 | will not succeed incorrectly. The checks against | |
9078 | (pos+size) transitively check "size" itself, | |
9079 | assuming that "pos" is reasonable. */ | |
9080 | if ((long) imm_expr.X_add_number < 0 | |
9081 | || ((unsigned long) imm_expr.X_add_number | |
9082 | + lastpos) < limlo | |
9083 | || ((unsigned long) imm_expr.X_add_number | |
9084 | + lastpos) > limhi) | |
9085 | { | |
9086 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
9087 | (unsigned long) imm_expr.X_add_number, | |
9088 | (unsigned long) lastpos); | |
9089 | imm_expr.X_add_number = limlo - lastpos; | |
9090 | } | |
bf12938e RS |
9091 | INSERT_OPERAND (INSMSB, *ip, |
9092 | lastpos + imm_expr.X_add_number - 1); | |
071742cf CD |
9093 | imm_expr.X_op = O_absent; |
9094 | s = expr_end; | |
9095 | continue; | |
9096 | ||
9097 | case 'C': /* ext size, becomes MSBD. */ | |
9098 | limlo = 1; | |
9099 | limhi = 32; | |
5f74bc13 CD |
9100 | goto do_msbd; |
9101 | case 'G': | |
9102 | limlo = 33; | |
9103 | limhi = 64; | |
9104 | goto do_msbd; | |
9105 | case 'H': | |
9106 | limlo = 33; | |
9107 | limhi = 64; | |
9108 | goto do_msbd; | |
9109 | do_msbd: | |
071742cf CD |
9110 | my_getExpression (&imm_expr, s); |
9111 | check_absolute_expr (ip, &imm_expr); | |
9112 | /* Check for negative input so that small negative numbers | |
9113 | will not succeed incorrectly. The checks against | |
9114 | (pos+size) transitively check "size" itself, | |
9115 | assuming that "pos" is reasonable. */ | |
9116 | if ((long) imm_expr.X_add_number < 0 | |
9117 | || ((unsigned long) imm_expr.X_add_number | |
9118 | + lastpos) < limlo | |
9119 | || ((unsigned long) imm_expr.X_add_number | |
9120 | + lastpos) > limhi) | |
9121 | { | |
9122 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
9123 | (unsigned long) imm_expr.X_add_number, | |
9124 | (unsigned long) lastpos); | |
9125 | imm_expr.X_add_number = limlo - lastpos; | |
9126 | } | |
bf12938e | 9127 | INSERT_OPERAND (EXTMSBD, *ip, imm_expr.X_add_number - 1); |
071742cf CD |
9128 | imm_expr.X_op = O_absent; |
9129 | s = expr_end; | |
9130 | continue; | |
af7ee8bf | 9131 | |
bbcc0807 CD |
9132 | case 'D': |
9133 | /* +D is for disassembly only; never match. */ | |
9134 | break; | |
9135 | ||
5f74bc13 CD |
9136 | case 'I': |
9137 | /* "+I" is like "I", except that imm2_expr is used. */ | |
9138 | my_getExpression (&imm2_expr, s); | |
9139 | if (imm2_expr.X_op != O_big | |
9140 | && imm2_expr.X_op != O_constant) | |
9141 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
9142 | if (HAVE_32BIT_GPRS) |
9143 | normalize_constant_expr (&imm2_expr); | |
5f74bc13 CD |
9144 | s = expr_end; |
9145 | continue; | |
9146 | ||
707bfff6 | 9147 | case 'T': /* Coprocessor register. */ |
ef2e4d86 CF |
9148 | /* +T is for disassembly only; never match. */ |
9149 | break; | |
9150 | ||
707bfff6 | 9151 | case 't': /* Coprocessor register number. */ |
ef2e4d86 CF |
9152 | if (s[0] == '$' && ISDIGIT (s[1])) |
9153 | { | |
9154 | ++s; | |
9155 | regno = 0; | |
9156 | do | |
9157 | { | |
9158 | regno *= 10; | |
9159 | regno += *s - '0'; | |
9160 | ++s; | |
9161 | } | |
9162 | while (ISDIGIT (*s)); | |
9163 | if (regno > 31) | |
9164 | as_bad (_("Invalid register number (%d)"), regno); | |
9165 | else | |
9166 | { | |
a9e24354 | 9167 | INSERT_OPERAND (RT, *ip, regno); |
ef2e4d86 CF |
9168 | continue; |
9169 | } | |
9170 | } | |
9171 | else | |
9172 | as_bad (_("Invalid coprocessor 0 register number")); | |
9173 | break; | |
9174 | ||
bb35fb24 NC |
9175 | case 'x': |
9176 | /* bbit[01] and bbit[01]32 bit index. Give error if index | |
9177 | is not in the valid range. */ | |
9178 | my_getExpression (&imm_expr, s); | |
9179 | check_absolute_expr (ip, &imm_expr); | |
9180 | if ((unsigned) imm_expr.X_add_number > 31) | |
9181 | { | |
9182 | as_bad (_("Improper bit index (%lu)"), | |
9183 | (unsigned long) imm_expr.X_add_number); | |
9184 | imm_expr.X_add_number = 0; | |
9185 | } | |
9186 | INSERT_OPERAND (BBITIND, *ip, imm_expr.X_add_number); | |
9187 | imm_expr.X_op = O_absent; | |
9188 | s = expr_end; | |
9189 | continue; | |
9190 | ||
9191 | case 'X': | |
9192 | /* bbit[01] bit index when bbit is used but we generate | |
9193 | bbit[01]32 because the index is over 32. Move to the | |
9194 | next candidate if index is not in the valid range. */ | |
9195 | my_getExpression (&imm_expr, s); | |
9196 | check_absolute_expr (ip, &imm_expr); | |
9197 | if ((unsigned) imm_expr.X_add_number < 32 | |
9198 | || (unsigned) imm_expr.X_add_number > 63) | |
9199 | break; | |
9200 | INSERT_OPERAND (BBITIND, *ip, imm_expr.X_add_number - 32); | |
9201 | imm_expr.X_op = O_absent; | |
9202 | s = expr_end; | |
9203 | continue; | |
9204 | ||
9205 | case 'p': | |
9206 | /* cins, cins32, exts and exts32 position field. Give error | |
9207 | if it's not in the valid range. */ | |
9208 | my_getExpression (&imm_expr, s); | |
9209 | check_absolute_expr (ip, &imm_expr); | |
9210 | if ((unsigned) imm_expr.X_add_number > 31) | |
9211 | { | |
9212 | as_bad (_("Improper position (%lu)"), | |
9213 | (unsigned long) imm_expr.X_add_number); | |
9214 | imm_expr.X_add_number = 0; | |
9215 | } | |
9216 | /* Make the pos explicit to simplify +S. */ | |
9217 | lastpos = imm_expr.X_add_number + 32; | |
9218 | INSERT_OPERAND (CINSPOS, *ip, imm_expr.X_add_number); | |
9219 | imm_expr.X_op = O_absent; | |
9220 | s = expr_end; | |
9221 | continue; | |
9222 | ||
9223 | case 'P': | |
9224 | /* cins, cins32, exts and exts32 position field. Move to | |
9225 | the next candidate if it's not in the valid range. */ | |
9226 | my_getExpression (&imm_expr, s); | |
9227 | check_absolute_expr (ip, &imm_expr); | |
9228 | if ((unsigned) imm_expr.X_add_number < 32 | |
9229 | || (unsigned) imm_expr.X_add_number > 63) | |
9230 | break; | |
9231 | lastpos = imm_expr.X_add_number; | |
9232 | INSERT_OPERAND (CINSPOS, *ip, imm_expr.X_add_number - 32); | |
9233 | imm_expr.X_op = O_absent; | |
9234 | s = expr_end; | |
9235 | continue; | |
9236 | ||
9237 | case 's': | |
9238 | /* cins and exts length-minus-one field. */ | |
9239 | my_getExpression (&imm_expr, s); | |
9240 | check_absolute_expr (ip, &imm_expr); | |
9241 | if ((unsigned long) imm_expr.X_add_number > 31) | |
9242 | { | |
9243 | as_bad (_("Improper size (%lu)"), | |
9244 | (unsigned long) imm_expr.X_add_number); | |
9245 | imm_expr.X_add_number = 0; | |
9246 | } | |
9247 | INSERT_OPERAND (CINSLM1, *ip, imm_expr.X_add_number); | |
9248 | imm_expr.X_op = O_absent; | |
9249 | s = expr_end; | |
9250 | continue; | |
9251 | ||
9252 | case 'S': | |
9253 | /* cins32/exts32 and cins/exts aliasing cint32/exts32 | |
9254 | length-minus-one field. */ | |
9255 | my_getExpression (&imm_expr, s); | |
9256 | check_absolute_expr (ip, &imm_expr); | |
9257 | if ((long) imm_expr.X_add_number < 0 | |
9258 | || (unsigned long) imm_expr.X_add_number + lastpos > 63) | |
9259 | { | |
9260 | as_bad (_("Improper size (%lu)"), | |
9261 | (unsigned long) imm_expr.X_add_number); | |
9262 | imm_expr.X_add_number = 0; | |
9263 | } | |
9264 | INSERT_OPERAND (CINSLM1, *ip, imm_expr.X_add_number); | |
9265 | imm_expr.X_op = O_absent; | |
9266 | s = expr_end; | |
9267 | continue; | |
9268 | ||
dd3cbb7e NC |
9269 | case 'Q': |
9270 | /* seqi/snei immediate field. */ | |
9271 | my_getExpression (&imm_expr, s); | |
9272 | check_absolute_expr (ip, &imm_expr); | |
9273 | if ((long) imm_expr.X_add_number < -512 | |
9274 | || (long) imm_expr.X_add_number >= 512) | |
9275 | { | |
9276 | as_bad (_("Improper immediate (%ld)"), | |
9277 | (long) imm_expr.X_add_number); | |
9278 | imm_expr.X_add_number = 0; | |
9279 | } | |
9280 | INSERT_OPERAND (SEQI, *ip, imm_expr.X_add_number); | |
9281 | imm_expr.X_op = O_absent; | |
9282 | s = expr_end; | |
9283 | continue; | |
9284 | ||
af7ee8bf CD |
9285 | default: |
9286 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
9287 | *args, insn->name, insn->args); | |
9288 | /* Further processing is fruitless. */ | |
9289 | return; | |
9290 | } | |
9291 | break; | |
9292 | ||
252b5132 RH |
9293 | case '<': /* must be at least one digit */ |
9294 | /* | |
9295 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
9296 | * than 31 or less than 0, then the shift amount should be |
9297 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
9298 | * We issue a warning and mask out all but the low 5 bits. |
9299 | */ | |
9300 | my_getExpression (&imm_expr, s); | |
9301 | check_absolute_expr (ip, &imm_expr); | |
9302 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
9303 | as_warn (_("Improper shift amount (%lu)"), |
9304 | (unsigned long) imm_expr.X_add_number); | |
9305 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9306 | imm_expr.X_op = O_absent; |
9307 | s = expr_end; | |
9308 | continue; | |
9309 | ||
9310 | case '>': /* shift amount minus 32 */ | |
9311 | my_getExpression (&imm_expr, s); | |
9312 | check_absolute_expr (ip, &imm_expr); | |
9313 | if ((unsigned long) imm_expr.X_add_number < 32 | |
9314 | || (unsigned long) imm_expr.X_add_number > 63) | |
9315 | break; | |
bf12938e | 9316 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number - 32); |
252b5132 RH |
9317 | imm_expr.X_op = O_absent; |
9318 | s = expr_end; | |
9319 | continue; | |
9320 | ||
252b5132 RH |
9321 | case 'k': /* cache code */ |
9322 | case 'h': /* prefx code */ | |
620edafd | 9323 | case '1': /* sync type */ |
252b5132 RH |
9324 | my_getExpression (&imm_expr, s); |
9325 | check_absolute_expr (ip, &imm_expr); | |
9326 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
9327 | as_warn (_("Invalid value for `%s' (%lu)"), |
9328 | ip->insn_mo->name, | |
9329 | (unsigned long) imm_expr.X_add_number); | |
252b5132 | 9330 | if (*args == 'k') |
d954098f DD |
9331 | { |
9332 | if (mips_fix_cn63xxp1 && strcmp ("pref", insn->name) == 0) | |
9333 | switch (imm_expr.X_add_number) | |
9334 | { | |
9335 | case 5: | |
9336 | case 25: | |
9337 | case 26: | |
9338 | case 27: | |
9339 | case 28: | |
9340 | case 29: | |
9341 | case 30: | |
9342 | case 31: /* These are ok. */ | |
9343 | break; | |
9344 | ||
9345 | default: /* The rest must be changed to 28. */ | |
9346 | imm_expr.X_add_number = 28; | |
9347 | break; | |
9348 | } | |
9349 | INSERT_OPERAND (CACHE, *ip, imm_expr.X_add_number); | |
9350 | } | |
620edafd | 9351 | else if (*args == 'h') |
bf12938e | 9352 | INSERT_OPERAND (PREFX, *ip, imm_expr.X_add_number); |
620edafd CF |
9353 | else |
9354 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9355 | imm_expr.X_op = O_absent; |
9356 | s = expr_end; | |
9357 | continue; | |
9358 | ||
9359 | case 'c': /* break code */ | |
9360 | my_getExpression (&imm_expr, s); | |
9361 | check_absolute_expr (ip, &imm_expr); | |
a9e24354 TS |
9362 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE) |
9363 | as_warn (_("Code for %s not in range 0..1023 (%lu)"), | |
9364 | ip->insn_mo->name, | |
bf12938e RS |
9365 | (unsigned long) imm_expr.X_add_number); |
9366 | INSERT_OPERAND (CODE, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9367 | imm_expr.X_op = O_absent; |
9368 | s = expr_end; | |
9369 | continue; | |
9370 | ||
9371 | case 'q': /* lower break code */ | |
9372 | my_getExpression (&imm_expr, s); | |
9373 | check_absolute_expr (ip, &imm_expr); | |
a9e24354 TS |
9374 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE2) |
9375 | as_warn (_("Lower code for %s not in range 0..1023 (%lu)"), | |
9376 | ip->insn_mo->name, | |
bf12938e RS |
9377 | (unsigned long) imm_expr.X_add_number); |
9378 | INSERT_OPERAND (CODE2, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9379 | imm_expr.X_op = O_absent; |
9380 | s = expr_end; | |
9381 | continue; | |
9382 | ||
4372b673 | 9383 | case 'B': /* 20-bit syscall/break code. */ |
156c2f8b | 9384 | my_getExpression (&imm_expr, s); |
156c2f8b | 9385 | check_absolute_expr (ip, &imm_expr); |
793b27f4 | 9386 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE20) |
a9e24354 TS |
9387 | as_warn (_("Code for %s not in range 0..1048575 (%lu)"), |
9388 | ip->insn_mo->name, | |
793b27f4 | 9389 | (unsigned long) imm_expr.X_add_number); |
bf12938e | 9390 | INSERT_OPERAND (CODE20, *ip, imm_expr.X_add_number); |
252b5132 RH |
9391 | imm_expr.X_op = O_absent; |
9392 | s = expr_end; | |
9393 | continue; | |
9394 | ||
98d3f06f | 9395 | case 'C': /* Coprocessor code */ |
beae10d5 | 9396 | my_getExpression (&imm_expr, s); |
252b5132 | 9397 | check_absolute_expr (ip, &imm_expr); |
a9e24354 | 9398 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_COPZ) |
252b5132 | 9399 | { |
793b27f4 TS |
9400 | as_warn (_("Coproccesor code > 25 bits (%lu)"), |
9401 | (unsigned long) imm_expr.X_add_number); | |
a9e24354 | 9402 | imm_expr.X_add_number &= OP_MASK_COPZ; |
252b5132 | 9403 | } |
a9e24354 | 9404 | INSERT_OPERAND (COPZ, *ip, imm_expr.X_add_number); |
beae10d5 KH |
9405 | imm_expr.X_op = O_absent; |
9406 | s = expr_end; | |
9407 | continue; | |
252b5132 | 9408 | |
4372b673 NC |
9409 | case 'J': /* 19-bit wait code. */ |
9410 | my_getExpression (&imm_expr, s); | |
9411 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 9412 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
a9e24354 TS |
9413 | { |
9414 | as_warn (_("Illegal 19-bit code (%lu)"), | |
9415 | (unsigned long) imm_expr.X_add_number); | |
9416 | imm_expr.X_add_number &= OP_MASK_CODE19; | |
9417 | } | |
bf12938e | 9418 | INSERT_OPERAND (CODE19, *ip, imm_expr.X_add_number); |
4372b673 NC |
9419 | imm_expr.X_op = O_absent; |
9420 | s = expr_end; | |
9421 | continue; | |
9422 | ||
707bfff6 | 9423 | case 'P': /* Performance register. */ |
beae10d5 | 9424 | my_getExpression (&imm_expr, s); |
252b5132 | 9425 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 9426 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
bf12938e RS |
9427 | as_warn (_("Invalid performance register (%lu)"), |
9428 | (unsigned long) imm_expr.X_add_number); | |
9429 | INSERT_OPERAND (PERFREG, *ip, imm_expr.X_add_number); | |
beae10d5 KH |
9430 | imm_expr.X_op = O_absent; |
9431 | s = expr_end; | |
9432 | continue; | |
252b5132 | 9433 | |
707bfff6 TS |
9434 | case 'G': /* Coprocessor destination register. */ |
9435 | if (((ip->insn_opcode >> OP_SH_OP) & OP_MASK_OP) == OP_OP_COP0) | |
9436 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_CP0, ®no); | |
9437 | else | |
9438 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
a9e24354 | 9439 | INSERT_OPERAND (RD, *ip, regno); |
707bfff6 TS |
9440 | if (ok) |
9441 | { | |
9442 | lastregno = regno; | |
9443 | continue; | |
9444 | } | |
9445 | else | |
9446 | break; | |
9447 | ||
252b5132 RH |
9448 | case 'b': /* base register */ |
9449 | case 'd': /* destination register */ | |
9450 | case 's': /* source register */ | |
9451 | case 't': /* target register */ | |
9452 | case 'r': /* both target and source */ | |
9453 | case 'v': /* both dest and source */ | |
9454 | case 'w': /* both dest and target */ | |
9455 | case 'E': /* coprocessor target register */ | |
af7ee8bf | 9456 | case 'K': /* 'rdhwr' destination register */ |
252b5132 RH |
9457 | case 'x': /* ignore register name */ |
9458 | case 'z': /* must be zero register */ | |
4372b673 | 9459 | case 'U': /* destination register (clo/clz). */ |
ef2e4d86 | 9460 | case 'g': /* coprocessor destination register */ |
707bfff6 TS |
9461 | s_reset = s; |
9462 | if (*args == 'E' || *args == 'K') | |
9463 | ok = reg_lookup (&s, RTYPE_NUM, ®no); | |
9464 | else | |
9465 | { | |
9466 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
741fe287 MR |
9467 | if (regno == AT && mips_opts.at) |
9468 | { | |
9469 | if (mips_opts.at == ATREG) | |
9470 | as_warn (_("used $at without \".set noat\"")); | |
9471 | else | |
9472 | as_warn (_("used $%u with \".set at=$%u\""), | |
9473 | regno, mips_opts.at); | |
9474 | } | |
707bfff6 TS |
9475 | } |
9476 | if (ok) | |
252b5132 | 9477 | { |
252b5132 RH |
9478 | c = *args; |
9479 | if (*s == ' ') | |
f9419b05 | 9480 | ++s; |
252b5132 RH |
9481 | if (args[1] != *s) |
9482 | { | |
9483 | if (c == 'r' || c == 'v' || c == 'w') | |
9484 | { | |
9485 | regno = lastregno; | |
9486 | s = s_reset; | |
f9419b05 | 9487 | ++args; |
252b5132 RH |
9488 | } |
9489 | } | |
9490 | /* 'z' only matches $0. */ | |
9491 | if (c == 'z' && regno != 0) | |
9492 | break; | |
9493 | ||
24864476 | 9494 | if (c == 's' && !strncmp (ip->insn_mo->name, "jalr", 4)) |
e7c604dd CM |
9495 | { |
9496 | if (regno == lastregno) | |
9497 | { | |
24864476 | 9498 | insn_error = _("source and destination must be different"); |
e7c604dd CM |
9499 | continue; |
9500 | } | |
24864476 | 9501 | if (regno == 31 && lastregno == 0xffffffff) |
e7c604dd CM |
9502 | { |
9503 | insn_error = _("a destination register must be supplied"); | |
9504 | continue; | |
9505 | } | |
9506 | } | |
bdaaa2e1 KH |
9507 | /* Now that we have assembled one operand, we use the args string |
9508 | * to figure out where it goes in the instruction. */ | |
252b5132 RH |
9509 | switch (c) |
9510 | { | |
9511 | case 'r': | |
9512 | case 's': | |
9513 | case 'v': | |
9514 | case 'b': | |
bf12938e | 9515 | INSERT_OPERAND (RS, *ip, regno); |
252b5132 RH |
9516 | break; |
9517 | case 'd': | |
9518 | case 'G': | |
af7ee8bf | 9519 | case 'K': |
ef2e4d86 | 9520 | case 'g': |
bf12938e | 9521 | INSERT_OPERAND (RD, *ip, regno); |
252b5132 | 9522 | break; |
4372b673 | 9523 | case 'U': |
bf12938e RS |
9524 | INSERT_OPERAND (RD, *ip, regno); |
9525 | INSERT_OPERAND (RT, *ip, regno); | |
4372b673 | 9526 | break; |
252b5132 RH |
9527 | case 'w': |
9528 | case 't': | |
9529 | case 'E': | |
bf12938e | 9530 | INSERT_OPERAND (RT, *ip, regno); |
252b5132 RH |
9531 | break; |
9532 | case 'x': | |
9533 | /* This case exists because on the r3000 trunc | |
9534 | expands into a macro which requires a gp | |
9535 | register. On the r6000 or r4000 it is | |
9536 | assembled into a single instruction which | |
9537 | ignores the register. Thus the insn version | |
9538 | is MIPS_ISA2 and uses 'x', and the macro | |
9539 | version is MIPS_ISA1 and uses 't'. */ | |
9540 | break; | |
9541 | case 'z': | |
9542 | /* This case is for the div instruction, which | |
9543 | acts differently if the destination argument | |
9544 | is $0. This only matches $0, and is checked | |
9545 | outside the switch. */ | |
9546 | break; | |
9547 | case 'D': | |
9548 | /* Itbl operand; not yet implemented. FIXME ?? */ | |
9549 | break; | |
9550 | /* What about all other operands like 'i', which | |
9551 | can be specified in the opcode table? */ | |
9552 | } | |
9553 | lastregno = regno; | |
9554 | continue; | |
9555 | } | |
252b5132 RH |
9556 | switch (*args++) |
9557 | { | |
9558 | case 'r': | |
9559 | case 'v': | |
bf12938e | 9560 | INSERT_OPERAND (RS, *ip, lastregno); |
252b5132 RH |
9561 | continue; |
9562 | case 'w': | |
bf12938e | 9563 | INSERT_OPERAND (RT, *ip, lastregno); |
252b5132 RH |
9564 | continue; |
9565 | } | |
9566 | break; | |
9567 | ||
deec1734 CD |
9568 | case 'O': /* MDMX alignment immediate constant. */ |
9569 | my_getExpression (&imm_expr, s); | |
9570 | check_absolute_expr (ip, &imm_expr); | |
9571 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
20203fb9 | 9572 | as_warn (_("Improper align amount (%ld), using low bits"), |
bf12938e RS |
9573 | (long) imm_expr.X_add_number); |
9574 | INSERT_OPERAND (ALN, *ip, imm_expr.X_add_number); | |
deec1734 CD |
9575 | imm_expr.X_op = O_absent; |
9576 | s = expr_end; | |
9577 | continue; | |
9578 | ||
9579 | case 'Q': /* MDMX vector, element sel, or const. */ | |
9580 | if (s[0] != '$') | |
9581 | { | |
9582 | /* MDMX Immediate. */ | |
9583 | my_getExpression (&imm_expr, s); | |
9584 | check_absolute_expr (ip, &imm_expr); | |
9585 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
bf12938e RS |
9586 | as_warn (_("Invalid MDMX Immediate (%ld)"), |
9587 | (long) imm_expr.X_add_number); | |
9588 | INSERT_OPERAND (FT, *ip, imm_expr.X_add_number); | |
deec1734 CD |
9589 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) |
9590 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
9591 | else | |
9592 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
deec1734 CD |
9593 | imm_expr.X_op = O_absent; |
9594 | s = expr_end; | |
9595 | continue; | |
9596 | } | |
9597 | /* Not MDMX Immediate. Fall through. */ | |
9598 | case 'X': /* MDMX destination register. */ | |
9599 | case 'Y': /* MDMX source register. */ | |
9600 | case 'Z': /* MDMX target register. */ | |
9601 | is_mdmx = 1; | |
252b5132 RH |
9602 | case 'D': /* floating point destination register */ |
9603 | case 'S': /* floating point source register */ | |
9604 | case 'T': /* floating point target register */ | |
9605 | case 'R': /* floating point source register */ | |
9606 | case 'V': | |
9607 | case 'W': | |
707bfff6 TS |
9608 | rtype = RTYPE_FPU; |
9609 | if (is_mdmx | |
9610 | || (mips_opts.ase_mdmx | |
9611 | && (ip->insn_mo->pinfo & FP_D) | |
9612 | && (ip->insn_mo->pinfo & (INSN_COPROC_MOVE_DELAY | |
9613 | | INSN_COPROC_MEMORY_DELAY | |
9614 | | INSN_LOAD_COPROC_DELAY | |
9615 | | INSN_LOAD_MEMORY_DELAY | |
9616 | | INSN_STORE_MEMORY)))) | |
9617 | rtype |= RTYPE_VEC; | |
252b5132 | 9618 | s_reset = s; |
707bfff6 | 9619 | if (reg_lookup (&s, rtype, ®no)) |
252b5132 | 9620 | { |
252b5132 | 9621 | if ((regno & 1) != 0 |
ca4e0257 | 9622 | && HAVE_32BIT_FPRS |
7455baf8 | 9623 | && ! mips_oddfpreg_ok (ip->insn_mo, argnum)) |
252b5132 RH |
9624 | as_warn (_("Float register should be even, was %d"), |
9625 | regno); | |
9626 | ||
9627 | c = *args; | |
9628 | if (*s == ' ') | |
f9419b05 | 9629 | ++s; |
252b5132 RH |
9630 | if (args[1] != *s) |
9631 | { | |
9632 | if (c == 'V' || c == 'W') | |
9633 | { | |
9634 | regno = lastregno; | |
9635 | s = s_reset; | |
f9419b05 | 9636 | ++args; |
252b5132 RH |
9637 | } |
9638 | } | |
9639 | switch (c) | |
9640 | { | |
9641 | case 'D': | |
deec1734 | 9642 | case 'X': |
bf12938e | 9643 | INSERT_OPERAND (FD, *ip, regno); |
252b5132 RH |
9644 | break; |
9645 | case 'V': | |
9646 | case 'S': | |
deec1734 | 9647 | case 'Y': |
bf12938e | 9648 | INSERT_OPERAND (FS, *ip, regno); |
252b5132 | 9649 | break; |
deec1734 CD |
9650 | case 'Q': |
9651 | /* This is like 'Z', but also needs to fix the MDMX | |
9652 | vector/scalar select bits. Note that the | |
9653 | scalar immediate case is handled above. */ | |
9654 | if (*s == '[') | |
9655 | { | |
9656 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
9657 | int max_el = (is_qh ? 3 : 7); | |
9658 | s++; | |
9659 | my_getExpression(&imm_expr, s); | |
9660 | check_absolute_expr (ip, &imm_expr); | |
9661 | s = expr_end; | |
9662 | if (imm_expr.X_add_number > max_el) | |
20203fb9 NC |
9663 | as_bad (_("Bad element selector %ld"), |
9664 | (long) imm_expr.X_add_number); | |
deec1734 CD |
9665 | imm_expr.X_add_number &= max_el; |
9666 | ip->insn_opcode |= (imm_expr.X_add_number | |
9667 | << (OP_SH_VSEL + | |
9668 | (is_qh ? 2 : 1))); | |
01a3f561 | 9669 | imm_expr.X_op = O_absent; |
deec1734 | 9670 | if (*s != ']') |
20203fb9 | 9671 | as_warn (_("Expecting ']' found '%s'"), s); |
deec1734 CD |
9672 | else |
9673 | s++; | |
9674 | } | |
9675 | else | |
9676 | { | |
9677 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
9678 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
9679 | << OP_SH_VSEL); | |
9680 | else | |
9681 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
9682 | OP_SH_VSEL); | |
9683 | } | |
9684 | /* Fall through */ | |
252b5132 RH |
9685 | case 'W': |
9686 | case 'T': | |
deec1734 | 9687 | case 'Z': |
bf12938e | 9688 | INSERT_OPERAND (FT, *ip, regno); |
252b5132 RH |
9689 | break; |
9690 | case 'R': | |
bf12938e | 9691 | INSERT_OPERAND (FR, *ip, regno); |
252b5132 RH |
9692 | break; |
9693 | } | |
9694 | lastregno = regno; | |
9695 | continue; | |
9696 | } | |
9697 | ||
252b5132 RH |
9698 | switch (*args++) |
9699 | { | |
9700 | case 'V': | |
bf12938e | 9701 | INSERT_OPERAND (FS, *ip, lastregno); |
252b5132 RH |
9702 | continue; |
9703 | case 'W': | |
bf12938e | 9704 | INSERT_OPERAND (FT, *ip, lastregno); |
252b5132 RH |
9705 | continue; |
9706 | } | |
9707 | break; | |
9708 | ||
9709 | case 'I': | |
9710 | my_getExpression (&imm_expr, s); | |
9711 | if (imm_expr.X_op != O_big | |
9712 | && imm_expr.X_op != O_constant) | |
9713 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
9714 | if (HAVE_32BIT_GPRS) |
9715 | normalize_constant_expr (&imm_expr); | |
252b5132 RH |
9716 | s = expr_end; |
9717 | continue; | |
9718 | ||
9719 | case 'A': | |
9720 | my_getExpression (&offset_expr, s); | |
2051e8c4 | 9721 | normalize_address_expr (&offset_expr); |
f6688943 | 9722 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
9723 | s = expr_end; |
9724 | continue; | |
9725 | ||
9726 | case 'F': | |
9727 | case 'L': | |
9728 | case 'f': | |
9729 | case 'l': | |
9730 | { | |
9731 | int f64; | |
ca4e0257 | 9732 | int using_gprs; |
252b5132 RH |
9733 | char *save_in; |
9734 | char *err; | |
9735 | unsigned char temp[8]; | |
9736 | int len; | |
9737 | unsigned int length; | |
9738 | segT seg; | |
9739 | subsegT subseg; | |
9740 | char *p; | |
9741 | ||
9742 | /* These only appear as the last operand in an | |
9743 | instruction, and every instruction that accepts | |
9744 | them in any variant accepts them in all variants. | |
9745 | This means we don't have to worry about backing out | |
9746 | any changes if the instruction does not match. | |
9747 | ||
9748 | The difference between them is the size of the | |
9749 | floating point constant and where it goes. For 'F' | |
9750 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
9751 | is 32 bits. Where the constant is placed is based | |
9752 | on how the MIPS assembler does things: | |
9753 | F -- .rdata | |
9754 | L -- .lit8 | |
9755 | f -- immediate value | |
9756 | l -- .lit4 | |
9757 | ||
9758 | The .lit4 and .lit8 sections are only used if | |
9759 | permitted by the -G argument. | |
9760 | ||
ca4e0257 RS |
9761 | The code below needs to know whether the target register |
9762 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
9763 | 'F' are used with GPR-based instructions and 'l' and | |
9764 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
9765 | |
9766 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 9767 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
9768 | |
9769 | save_in = input_line_pointer; | |
9770 | input_line_pointer = s; | |
9771 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
9772 | length = len; | |
9773 | s = input_line_pointer; | |
9774 | input_line_pointer = save_in; | |
9775 | if (err != NULL && *err != '\0') | |
9776 | { | |
9777 | as_bad (_("Bad floating point constant: %s"), err); | |
9778 | memset (temp, '\0', sizeof temp); | |
9779 | length = f64 ? 8 : 4; | |
9780 | } | |
9781 | ||
9c2799c2 | 9782 | gas_assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
9783 | |
9784 | if (*args == 'f' | |
9785 | || (*args == 'l' | |
3e722fb5 | 9786 | && (g_switch_value < 4 |
252b5132 RH |
9787 | || (temp[0] == 0 && temp[1] == 0) |
9788 | || (temp[2] == 0 && temp[3] == 0)))) | |
9789 | { | |
9790 | imm_expr.X_op = O_constant; | |
9791 | if (! target_big_endian) | |
9792 | imm_expr.X_add_number = bfd_getl32 (temp); | |
9793 | else | |
9794 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9795 | } | |
9796 | else if (length > 4 | |
119d663a | 9797 | && ! mips_disable_float_construction |
ca4e0257 RS |
9798 | /* Constants can only be constructed in GPRs and |
9799 | copied to FPRs if the GPRs are at least as wide | |
9800 | as the FPRs. Force the constant into memory if | |
9801 | we are using 64-bit FPRs but the GPRs are only | |
9802 | 32 bits wide. */ | |
9803 | && (using_gprs | |
9804 | || ! (HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) | |
252b5132 RH |
9805 | && ((temp[0] == 0 && temp[1] == 0) |
9806 | || (temp[2] == 0 && temp[3] == 0)) | |
9807 | && ((temp[4] == 0 && temp[5] == 0) | |
9808 | || (temp[6] == 0 && temp[7] == 0))) | |
9809 | { | |
ca4e0257 RS |
9810 | /* The value is simple enough to load with a couple of |
9811 | instructions. If using 32-bit registers, set | |
9812 | imm_expr to the high order 32 bits and offset_expr to | |
9813 | the low order 32 bits. Otherwise, set imm_expr to | |
9814 | the entire 64 bit constant. */ | |
9815 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) | |
252b5132 RH |
9816 | { |
9817 | imm_expr.X_op = O_constant; | |
9818 | offset_expr.X_op = O_constant; | |
9819 | if (! target_big_endian) | |
9820 | { | |
9821 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
9822 | offset_expr.X_add_number = bfd_getl32 (temp); | |
9823 | } | |
9824 | else | |
9825 | { | |
9826 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9827 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
9828 | } | |
9829 | if (offset_expr.X_add_number == 0) | |
9830 | offset_expr.X_op = O_absent; | |
9831 | } | |
9832 | else if (sizeof (imm_expr.X_add_number) > 4) | |
9833 | { | |
9834 | imm_expr.X_op = O_constant; | |
9835 | if (! target_big_endian) | |
9836 | imm_expr.X_add_number = bfd_getl64 (temp); | |
9837 | else | |
9838 | imm_expr.X_add_number = bfd_getb64 (temp); | |
9839 | } | |
9840 | else | |
9841 | { | |
9842 | imm_expr.X_op = O_big; | |
9843 | imm_expr.X_add_number = 4; | |
9844 | if (! target_big_endian) | |
9845 | { | |
9846 | generic_bignum[0] = bfd_getl16 (temp); | |
9847 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
9848 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
9849 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
9850 | } | |
9851 | else | |
9852 | { | |
9853 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
9854 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
9855 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
9856 | generic_bignum[3] = bfd_getb16 (temp); | |
9857 | } | |
9858 | } | |
9859 | } | |
9860 | else | |
9861 | { | |
9862 | const char *newname; | |
9863 | segT new_seg; | |
9864 | ||
9865 | /* Switch to the right section. */ | |
9866 | seg = now_seg; | |
9867 | subseg = now_subseg; | |
9868 | switch (*args) | |
9869 | { | |
9870 | default: /* unused default case avoids warnings. */ | |
9871 | case 'L': | |
9872 | newname = RDATA_SECTION_NAME; | |
3e722fb5 | 9873 | if (g_switch_value >= 8) |
252b5132 RH |
9874 | newname = ".lit8"; |
9875 | break; | |
9876 | case 'F': | |
3e722fb5 | 9877 | newname = RDATA_SECTION_NAME; |
252b5132 RH |
9878 | break; |
9879 | case 'l': | |
9c2799c2 | 9880 | gas_assert (g_switch_value >= 4); |
252b5132 RH |
9881 | newname = ".lit4"; |
9882 | break; | |
9883 | } | |
9884 | new_seg = subseg_new (newname, (subsegT) 0); | |
f43abd2b | 9885 | if (IS_ELF) |
252b5132 RH |
9886 | bfd_set_section_flags (stdoutput, new_seg, |
9887 | (SEC_ALLOC | |
9888 | | SEC_LOAD | |
9889 | | SEC_READONLY | |
9890 | | SEC_DATA)); | |
9891 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
c41e87e3 | 9892 | if (IS_ELF && strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
9893 | record_alignment (new_seg, 4); |
9894 | else | |
9895 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
9896 | if (seg == now_seg) | |
9897 | as_bad (_("Can't use floating point insn in this section")); | |
9898 | ||
9899 | /* Set the argument to the current address in the | |
9900 | section. */ | |
9901 | offset_expr.X_op = O_symbol; | |
8680f6e1 | 9902 | offset_expr.X_add_symbol = symbol_temp_new_now (); |
252b5132 RH |
9903 | offset_expr.X_add_number = 0; |
9904 | ||
9905 | /* Put the floating point number into the section. */ | |
9906 | p = frag_more ((int) length); | |
9907 | memcpy (p, temp, length); | |
9908 | ||
9909 | /* Switch back to the original section. */ | |
9910 | subseg_set (seg, subseg); | |
9911 | } | |
9912 | } | |
9913 | continue; | |
9914 | ||
9915 | case 'i': /* 16 bit unsigned immediate */ | |
9916 | case 'j': /* 16 bit signed immediate */ | |
f6688943 | 9917 | *imm_reloc = BFD_RELOC_LO16; |
5e0116d5 | 9918 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0) |
252b5132 RH |
9919 | { |
9920 | int more; | |
5e0116d5 RS |
9921 | offsetT minval, maxval; |
9922 | ||
9923 | more = (insn + 1 < &mips_opcodes[NUMOPCODES] | |
9924 | && strcmp (insn->name, insn[1].name) == 0); | |
9925 | ||
9926 | /* If the expression was written as an unsigned number, | |
9927 | only treat it as signed if there are no more | |
9928 | alternatives. */ | |
9929 | if (more | |
9930 | && *args == 'j' | |
9931 | && sizeof (imm_expr.X_add_number) <= 4 | |
9932 | && imm_expr.X_op == O_constant | |
9933 | && imm_expr.X_add_number < 0 | |
9934 | && imm_expr.X_unsigned | |
9935 | && HAVE_64BIT_GPRS) | |
9936 | break; | |
9937 | ||
9938 | /* For compatibility with older assemblers, we accept | |
9939 | 0x8000-0xffff as signed 16-bit numbers when only | |
9940 | signed numbers are allowed. */ | |
9941 | if (*args == 'i') | |
9942 | minval = 0, maxval = 0xffff; | |
9943 | else if (more) | |
9944 | minval = -0x8000, maxval = 0x7fff; | |
252b5132 | 9945 | else |
5e0116d5 RS |
9946 | minval = -0x8000, maxval = 0xffff; |
9947 | ||
9948 | if (imm_expr.X_op != O_constant | |
9949 | || imm_expr.X_add_number < minval | |
9950 | || imm_expr.X_add_number > maxval) | |
252b5132 RH |
9951 | { |
9952 | if (more) | |
9953 | break; | |
2ae7e77b AH |
9954 | if (imm_expr.X_op == O_constant |
9955 | || imm_expr.X_op == O_big) | |
5e0116d5 | 9956 | as_bad (_("expression out of range")); |
252b5132 RH |
9957 | } |
9958 | } | |
9959 | s = expr_end; | |
9960 | continue; | |
9961 | ||
9962 | case 'o': /* 16 bit offset */ | |
5e0116d5 RS |
9963 | /* Check whether there is only a single bracketed expression |
9964 | left. If so, it must be the base register and the | |
9965 | constant must be zero. */ | |
9966 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
9967 | { | |
9968 | offset_expr.X_op = O_constant; | |
9969 | offset_expr.X_add_number = 0; | |
9970 | continue; | |
9971 | } | |
252b5132 RH |
9972 | |
9973 | /* If this value won't fit into a 16 bit offset, then go | |
9974 | find a macro that will generate the 32 bit offset | |
afdbd6d0 | 9975 | code pattern. */ |
5e0116d5 | 9976 | if (my_getSmallExpression (&offset_expr, offset_reloc, s) == 0 |
252b5132 RH |
9977 | && (offset_expr.X_op != O_constant |
9978 | || offset_expr.X_add_number >= 0x8000 | |
afdbd6d0 | 9979 | || offset_expr.X_add_number < -0x8000)) |
252b5132 RH |
9980 | break; |
9981 | ||
252b5132 RH |
9982 | s = expr_end; |
9983 | continue; | |
9984 | ||
9985 | case 'p': /* pc relative offset */ | |
0b25d3e6 | 9986 | *offset_reloc = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
9987 | my_getExpression (&offset_expr, s); |
9988 | s = expr_end; | |
9989 | continue; | |
9990 | ||
9991 | case 'u': /* upper 16 bits */ | |
5e0116d5 RS |
9992 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0 |
9993 | && imm_expr.X_op == O_constant | |
9994 | && (imm_expr.X_add_number < 0 | |
9995 | || imm_expr.X_add_number >= 0x10000)) | |
252b5132 RH |
9996 | as_bad (_("lui expression not in range 0..65535")); |
9997 | s = expr_end; | |
9998 | continue; | |
9999 | ||
10000 | case 'a': /* 26 bit address */ | |
10001 | my_getExpression (&offset_expr, s); | |
10002 | s = expr_end; | |
f6688943 | 10003 | *offset_reloc = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
10004 | continue; |
10005 | ||
10006 | case 'N': /* 3 bit branch condition code */ | |
10007 | case 'M': /* 3 bit compare condition code */ | |
707bfff6 TS |
10008 | rtype = RTYPE_CCC; |
10009 | if (ip->insn_mo->pinfo & (FP_D| FP_S)) | |
10010 | rtype |= RTYPE_FCC; | |
10011 | if (!reg_lookup (&s, rtype, ®no)) | |
252b5132 | 10012 | break; |
30c378fd CD |
10013 | if ((strcmp(str + strlen(str) - 3, ".ps") == 0 |
10014 | || strcmp(str + strlen(str) - 5, "any2f") == 0 | |
10015 | || strcmp(str + strlen(str) - 5, "any2t") == 0) | |
10016 | && (regno & 1) != 0) | |
20203fb9 NC |
10017 | as_warn (_("Condition code register should be even for %s, was %d"), |
10018 | str, regno); | |
30c378fd CD |
10019 | if ((strcmp(str + strlen(str) - 5, "any4f") == 0 |
10020 | || strcmp(str + strlen(str) - 5, "any4t") == 0) | |
10021 | && (regno & 3) != 0) | |
20203fb9 NC |
10022 | as_warn (_("Condition code register should be 0 or 4 for %s, was %d"), |
10023 | str, regno); | |
252b5132 | 10024 | if (*args == 'N') |
bf12938e | 10025 | INSERT_OPERAND (BCC, *ip, regno); |
252b5132 | 10026 | else |
bf12938e | 10027 | INSERT_OPERAND (CCC, *ip, regno); |
beae10d5 | 10028 | continue; |
252b5132 | 10029 | |
156c2f8b NC |
10030 | case 'H': |
10031 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
10032 | s += 2; | |
3882b010 | 10033 | if (ISDIGIT (*s)) |
156c2f8b NC |
10034 | { |
10035 | c = 0; | |
10036 | do | |
10037 | { | |
10038 | c *= 10; | |
10039 | c += *s - '0'; | |
10040 | ++s; | |
10041 | } | |
3882b010 | 10042 | while (ISDIGIT (*s)); |
156c2f8b NC |
10043 | } |
10044 | else | |
10045 | c = 8; /* Invalid sel value. */ | |
10046 | ||
10047 | if (c > 7) | |
10048 | as_bad (_("invalid coprocessor sub-selection value (0-7)")); | |
10049 | ip->insn_opcode |= c; | |
10050 | continue; | |
10051 | ||
60b63b72 RS |
10052 | case 'e': |
10053 | /* Must be at least one digit. */ | |
10054 | my_getExpression (&imm_expr, s); | |
10055 | check_absolute_expr (ip, &imm_expr); | |
10056 | ||
10057 | if ((unsigned long) imm_expr.X_add_number | |
10058 | > (unsigned long) OP_MASK_VECBYTE) | |
10059 | { | |
10060 | as_bad (_("bad byte vector index (%ld)"), | |
10061 | (long) imm_expr.X_add_number); | |
10062 | imm_expr.X_add_number = 0; | |
10063 | } | |
10064 | ||
bf12938e | 10065 | INSERT_OPERAND (VECBYTE, *ip, imm_expr.X_add_number); |
60b63b72 RS |
10066 | imm_expr.X_op = O_absent; |
10067 | s = expr_end; | |
10068 | continue; | |
10069 | ||
10070 | case '%': | |
10071 | my_getExpression (&imm_expr, s); | |
10072 | check_absolute_expr (ip, &imm_expr); | |
10073 | ||
10074 | if ((unsigned long) imm_expr.X_add_number | |
10075 | > (unsigned long) OP_MASK_VECALIGN) | |
10076 | { | |
10077 | as_bad (_("bad byte vector index (%ld)"), | |
10078 | (long) imm_expr.X_add_number); | |
10079 | imm_expr.X_add_number = 0; | |
10080 | } | |
10081 | ||
bf12938e | 10082 | INSERT_OPERAND (VECALIGN, *ip, imm_expr.X_add_number); |
60b63b72 RS |
10083 | imm_expr.X_op = O_absent; |
10084 | s = expr_end; | |
10085 | continue; | |
10086 | ||
252b5132 RH |
10087 | default: |
10088 | as_bad (_("bad char = '%c'\n"), *args); | |
10089 | internalError (); | |
10090 | } | |
10091 | break; | |
10092 | } | |
10093 | /* Args don't match. */ | |
10094 | if (insn + 1 < &mips_opcodes[NUMOPCODES] && | |
10095 | !strcmp (insn->name, insn[1].name)) | |
10096 | { | |
10097 | ++insn; | |
10098 | s = argsStart; | |
268f6bed | 10099 | insn_error = _("illegal operands"); |
252b5132 RH |
10100 | continue; |
10101 | } | |
268f6bed | 10102 | if (save_c) |
570de991 | 10103 | *(--argsStart) = save_c; |
252b5132 RH |
10104 | insn_error = _("illegal operands"); |
10105 | return; | |
10106 | } | |
10107 | } | |
10108 | ||
0499d65b TS |
10109 | #define SKIP_SPACE_TABS(S) { while (*(S) == ' ' || *(S) == '\t') ++(S); } |
10110 | ||
252b5132 RH |
10111 | /* This routine assembles an instruction into its binary format when |
10112 | assembling for the mips16. As a side effect, it sets one of the | |
10113 | global variables imm_reloc or offset_reloc to the type of | |
10114 | relocation to do if one of the operands is an address expression. | |
10115 | It also sets mips16_small and mips16_ext if the user explicitly | |
10116 | requested a small or extended instruction. */ | |
10117 | ||
10118 | static void | |
17a2f251 | 10119 | mips16_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
10120 | { |
10121 | char *s; | |
10122 | const char *args; | |
10123 | struct mips_opcode *insn; | |
10124 | char *argsstart; | |
10125 | unsigned int regno; | |
10126 | unsigned int lastregno = 0; | |
10127 | char *s_reset; | |
d6f16593 | 10128 | size_t i; |
252b5132 RH |
10129 | |
10130 | insn_error = NULL; | |
10131 | ||
b34976b6 AM |
10132 | mips16_small = FALSE; |
10133 | mips16_ext = FALSE; | |
252b5132 | 10134 | |
3882b010 | 10135 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
10136 | ; |
10137 | switch (*s) | |
10138 | { | |
10139 | case '\0': | |
10140 | break; | |
10141 | ||
10142 | case ' ': | |
10143 | *s++ = '\0'; | |
10144 | break; | |
10145 | ||
10146 | case '.': | |
10147 | if (s[1] == 't' && s[2] == ' ') | |
10148 | { | |
10149 | *s = '\0'; | |
b34976b6 | 10150 | mips16_small = TRUE; |
252b5132 RH |
10151 | s += 3; |
10152 | break; | |
10153 | } | |
10154 | else if (s[1] == 'e' && s[2] == ' ') | |
10155 | { | |
10156 | *s = '\0'; | |
b34976b6 | 10157 | mips16_ext = TRUE; |
252b5132 RH |
10158 | s += 3; |
10159 | break; | |
10160 | } | |
10161 | /* Fall through. */ | |
10162 | default: | |
10163 | insn_error = _("unknown opcode"); | |
10164 | return; | |
10165 | } | |
10166 | ||
10167 | if (mips_opts.noautoextend && ! mips16_ext) | |
b34976b6 | 10168 | mips16_small = TRUE; |
252b5132 RH |
10169 | |
10170 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
10171 | { | |
10172 | insn_error = _("unrecognized opcode"); | |
10173 | return; | |
10174 | } | |
10175 | ||
10176 | argsstart = s; | |
10177 | for (;;) | |
10178 | { | |
9b3f89ee TS |
10179 | bfd_boolean ok; |
10180 | ||
9c2799c2 | 10181 | gas_assert (strcmp (insn->name, str) == 0); |
252b5132 | 10182 | |
037b32b9 | 10183 | ok = is_opcode_valid_16 (insn); |
9b3f89ee TS |
10184 | if (! ok) |
10185 | { | |
10186 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] | |
10187 | && strcmp (insn->name, insn[1].name) == 0) | |
10188 | { | |
10189 | ++insn; | |
10190 | continue; | |
10191 | } | |
10192 | else | |
10193 | { | |
10194 | if (!insn_error) | |
10195 | { | |
10196 | static char buf[100]; | |
10197 | sprintf (buf, | |
10198 | _("opcode not supported on this processor: %s (%s)"), | |
10199 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
10200 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
10201 | insn_error = buf; | |
10202 | } | |
10203 | return; | |
10204 | } | |
10205 | } | |
10206 | ||
1e915849 | 10207 | create_insn (ip, insn); |
252b5132 | 10208 | imm_expr.X_op = O_absent; |
f6688943 TS |
10209 | imm_reloc[0] = BFD_RELOC_UNUSED; |
10210 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
10211 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
5f74bc13 | 10212 | imm2_expr.X_op = O_absent; |
252b5132 | 10213 | offset_expr.X_op = O_absent; |
f6688943 TS |
10214 | offset_reloc[0] = BFD_RELOC_UNUSED; |
10215 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
10216 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
10217 | for (args = insn->args; 1; ++args) |
10218 | { | |
10219 | int c; | |
10220 | ||
10221 | if (*s == ' ') | |
10222 | ++s; | |
10223 | ||
10224 | /* In this switch statement we call break if we did not find | |
10225 | a match, continue if we did find a match, or return if we | |
10226 | are done. */ | |
10227 | ||
10228 | c = *args; | |
10229 | switch (c) | |
10230 | { | |
10231 | case '\0': | |
10232 | if (*s == '\0') | |
10233 | { | |
10234 | /* Stuff the immediate value in now, if we can. */ | |
10235 | if (imm_expr.X_op == O_constant | |
f6688943 | 10236 | && *imm_reloc > BFD_RELOC_UNUSED |
738e5348 RS |
10237 | && *imm_reloc != BFD_RELOC_MIPS16_GOT16 |
10238 | && *imm_reloc != BFD_RELOC_MIPS16_CALL16 | |
252b5132 RH |
10239 | && insn->pinfo != INSN_MACRO) |
10240 | { | |
d6f16593 MR |
10241 | valueT tmp; |
10242 | ||
10243 | switch (*offset_reloc) | |
10244 | { | |
10245 | case BFD_RELOC_MIPS16_HI16_S: | |
10246 | tmp = (imm_expr.X_add_number + 0x8000) >> 16; | |
10247 | break; | |
10248 | ||
10249 | case BFD_RELOC_MIPS16_HI16: | |
10250 | tmp = imm_expr.X_add_number >> 16; | |
10251 | break; | |
10252 | ||
10253 | case BFD_RELOC_MIPS16_LO16: | |
10254 | tmp = ((imm_expr.X_add_number + 0x8000) & 0xffff) | |
10255 | - 0x8000; | |
10256 | break; | |
10257 | ||
10258 | case BFD_RELOC_UNUSED: | |
10259 | tmp = imm_expr.X_add_number; | |
10260 | break; | |
10261 | ||
10262 | default: | |
10263 | internalError (); | |
10264 | } | |
10265 | *offset_reloc = BFD_RELOC_UNUSED; | |
10266 | ||
c4e7957c | 10267 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
d6f16593 | 10268 | tmp, TRUE, mips16_small, |
252b5132 RH |
10269 | mips16_ext, &ip->insn_opcode, |
10270 | &ip->use_extend, &ip->extend); | |
10271 | imm_expr.X_op = O_absent; | |
f6688943 | 10272 | *imm_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
10273 | } |
10274 | ||
10275 | return; | |
10276 | } | |
10277 | break; | |
10278 | ||
10279 | case ',': | |
10280 | if (*s++ == c) | |
10281 | continue; | |
10282 | s--; | |
10283 | switch (*++args) | |
10284 | { | |
10285 | case 'v': | |
bf12938e | 10286 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 RH |
10287 | continue; |
10288 | case 'w': | |
bf12938e | 10289 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
10290 | continue; |
10291 | } | |
10292 | break; | |
10293 | ||
10294 | case '(': | |
10295 | case ')': | |
10296 | if (*s++ == c) | |
10297 | continue; | |
10298 | break; | |
10299 | ||
10300 | case 'v': | |
10301 | case 'w': | |
10302 | if (s[0] != '$') | |
10303 | { | |
10304 | if (c == 'v') | |
bf12938e | 10305 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 | 10306 | else |
bf12938e | 10307 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
10308 | ++args; |
10309 | continue; | |
10310 | } | |
10311 | /* Fall through. */ | |
10312 | case 'x': | |
10313 | case 'y': | |
10314 | case 'z': | |
10315 | case 'Z': | |
10316 | case '0': | |
10317 | case 'S': | |
10318 | case 'R': | |
10319 | case 'X': | |
10320 | case 'Y': | |
707bfff6 TS |
10321 | s_reset = s; |
10322 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) | |
252b5132 | 10323 | { |
707bfff6 | 10324 | if (c == 'v' || c == 'w') |
85b51719 | 10325 | { |
707bfff6 | 10326 | if (c == 'v') |
a9e24354 | 10327 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
707bfff6 | 10328 | else |
a9e24354 | 10329 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
707bfff6 TS |
10330 | ++args; |
10331 | continue; | |
85b51719 | 10332 | } |
707bfff6 | 10333 | break; |
252b5132 RH |
10334 | } |
10335 | ||
10336 | if (*s == ' ') | |
10337 | ++s; | |
10338 | if (args[1] != *s) | |
10339 | { | |
10340 | if (c == 'v' || c == 'w') | |
10341 | { | |
10342 | regno = mips16_to_32_reg_map[lastregno]; | |
10343 | s = s_reset; | |
f9419b05 | 10344 | ++args; |
252b5132 RH |
10345 | } |
10346 | } | |
10347 | ||
10348 | switch (c) | |
10349 | { | |
10350 | case 'x': | |
10351 | case 'y': | |
10352 | case 'z': | |
10353 | case 'v': | |
10354 | case 'w': | |
10355 | case 'Z': | |
10356 | regno = mips32_to_16_reg_map[regno]; | |
10357 | break; | |
10358 | ||
10359 | case '0': | |
10360 | if (regno != 0) | |
10361 | regno = ILLEGAL_REG; | |
10362 | break; | |
10363 | ||
10364 | case 'S': | |
10365 | if (regno != SP) | |
10366 | regno = ILLEGAL_REG; | |
10367 | break; | |
10368 | ||
10369 | case 'R': | |
10370 | if (regno != RA) | |
10371 | regno = ILLEGAL_REG; | |
10372 | break; | |
10373 | ||
10374 | case 'X': | |
10375 | case 'Y': | |
741fe287 MR |
10376 | if (regno == AT && mips_opts.at) |
10377 | { | |
10378 | if (mips_opts.at == ATREG) | |
10379 | as_warn (_("used $at without \".set noat\"")); | |
10380 | else | |
10381 | as_warn (_("used $%u with \".set at=$%u\""), | |
10382 | regno, mips_opts.at); | |
10383 | } | |
252b5132 RH |
10384 | break; |
10385 | ||
10386 | default: | |
10387 | internalError (); | |
10388 | } | |
10389 | ||
10390 | if (regno == ILLEGAL_REG) | |
10391 | break; | |
10392 | ||
10393 | switch (c) | |
10394 | { | |
10395 | case 'x': | |
10396 | case 'v': | |
bf12938e | 10397 | MIPS16_INSERT_OPERAND (RX, *ip, regno); |
252b5132 RH |
10398 | break; |
10399 | case 'y': | |
10400 | case 'w': | |
bf12938e | 10401 | MIPS16_INSERT_OPERAND (RY, *ip, regno); |
252b5132 RH |
10402 | break; |
10403 | case 'z': | |
bf12938e | 10404 | MIPS16_INSERT_OPERAND (RZ, *ip, regno); |
252b5132 RH |
10405 | break; |
10406 | case 'Z': | |
bf12938e | 10407 | MIPS16_INSERT_OPERAND (MOVE32Z, *ip, regno); |
252b5132 RH |
10408 | case '0': |
10409 | case 'S': | |
10410 | case 'R': | |
10411 | break; | |
10412 | case 'X': | |
bf12938e | 10413 | MIPS16_INSERT_OPERAND (REGR32, *ip, regno); |
252b5132 RH |
10414 | break; |
10415 | case 'Y': | |
10416 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
bf12938e | 10417 | MIPS16_INSERT_OPERAND (REG32R, *ip, regno); |
252b5132 RH |
10418 | break; |
10419 | default: | |
10420 | internalError (); | |
10421 | } | |
10422 | ||
10423 | lastregno = regno; | |
10424 | continue; | |
10425 | ||
10426 | case 'P': | |
10427 | if (strncmp (s, "$pc", 3) == 0) | |
10428 | { | |
10429 | s += 3; | |
10430 | continue; | |
10431 | } | |
10432 | break; | |
10433 | ||
252b5132 RH |
10434 | case '5': |
10435 | case 'H': | |
10436 | case 'W': | |
10437 | case 'D': | |
10438 | case 'j': | |
252b5132 RH |
10439 | case 'V': |
10440 | case 'C': | |
10441 | case 'U': | |
10442 | case 'k': | |
10443 | case 'K': | |
d6f16593 MR |
10444 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); |
10445 | if (i > 0) | |
252b5132 | 10446 | { |
d6f16593 | 10447 | if (imm_expr.X_op != O_constant) |
252b5132 | 10448 | { |
b34976b6 | 10449 | mips16_ext = TRUE; |
b34976b6 | 10450 | ip->use_extend = TRUE; |
252b5132 | 10451 | ip->extend = 0; |
252b5132 | 10452 | } |
d6f16593 MR |
10453 | else |
10454 | { | |
10455 | /* We need to relax this instruction. */ | |
10456 | *offset_reloc = *imm_reloc; | |
10457 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; | |
10458 | } | |
10459 | s = expr_end; | |
10460 | continue; | |
252b5132 | 10461 | } |
d6f16593 MR |
10462 | *imm_reloc = BFD_RELOC_UNUSED; |
10463 | /* Fall through. */ | |
10464 | case '<': | |
10465 | case '>': | |
10466 | case '[': | |
10467 | case ']': | |
10468 | case '4': | |
10469 | case '8': | |
10470 | my_getExpression (&imm_expr, s); | |
252b5132 RH |
10471 | if (imm_expr.X_op == O_register) |
10472 | { | |
10473 | /* What we thought was an expression turned out to | |
10474 | be a register. */ | |
10475 | ||
10476 | if (s[0] == '(' && args[1] == '(') | |
10477 | { | |
10478 | /* It looks like the expression was omitted | |
10479 | before a register indirection, which means | |
10480 | that the expression is implicitly zero. We | |
10481 | still set up imm_expr, so that we handle | |
10482 | explicit extensions correctly. */ | |
10483 | imm_expr.X_op = O_constant; | |
10484 | imm_expr.X_add_number = 0; | |
f6688943 | 10485 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10486 | continue; |
10487 | } | |
10488 | ||
10489 | break; | |
10490 | } | |
10491 | ||
10492 | /* We need to relax this instruction. */ | |
f6688943 | 10493 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10494 | s = expr_end; |
10495 | continue; | |
10496 | ||
10497 | case 'p': | |
10498 | case 'q': | |
10499 | case 'A': | |
10500 | case 'B': | |
10501 | case 'E': | |
10502 | /* We use offset_reloc rather than imm_reloc for the PC | |
10503 | relative operands. This lets macros with both | |
10504 | immediate and address operands work correctly. */ | |
10505 | my_getExpression (&offset_expr, s); | |
10506 | ||
10507 | if (offset_expr.X_op == O_register) | |
10508 | break; | |
10509 | ||
10510 | /* We need to relax this instruction. */ | |
f6688943 | 10511 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10512 | s = expr_end; |
10513 | continue; | |
10514 | ||
10515 | case '6': /* break code */ | |
10516 | my_getExpression (&imm_expr, s); | |
10517 | check_absolute_expr (ip, &imm_expr); | |
10518 | if ((unsigned long) imm_expr.X_add_number > 63) | |
bf12938e RS |
10519 | as_warn (_("Invalid value for `%s' (%lu)"), |
10520 | ip->insn_mo->name, | |
10521 | (unsigned long) imm_expr.X_add_number); | |
10522 | MIPS16_INSERT_OPERAND (IMM6, *ip, imm_expr.X_add_number); | |
252b5132 RH |
10523 | imm_expr.X_op = O_absent; |
10524 | s = expr_end; | |
10525 | continue; | |
10526 | ||
10527 | case 'a': /* 26 bit address */ | |
10528 | my_getExpression (&offset_expr, s); | |
10529 | s = expr_end; | |
f6688943 | 10530 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
10531 | ip->insn_opcode <<= 16; |
10532 | continue; | |
10533 | ||
10534 | case 'l': /* register list for entry macro */ | |
10535 | case 'L': /* register list for exit macro */ | |
10536 | { | |
10537 | int mask; | |
10538 | ||
10539 | if (c == 'l') | |
10540 | mask = 0; | |
10541 | else | |
10542 | mask = 7 << 3; | |
10543 | while (*s != '\0') | |
10544 | { | |
707bfff6 | 10545 | unsigned int freg, reg1, reg2; |
252b5132 RH |
10546 | |
10547 | while (*s == ' ' || *s == ',') | |
10548 | ++s; | |
707bfff6 | 10549 | if (reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
252b5132 | 10550 | freg = 0; |
707bfff6 TS |
10551 | else if (reg_lookup (&s, RTYPE_FPU, ®1)) |
10552 | freg = 1; | |
252b5132 RH |
10553 | else |
10554 | { | |
707bfff6 TS |
10555 | as_bad (_("can't parse register list")); |
10556 | break; | |
252b5132 RH |
10557 | } |
10558 | if (*s == ' ') | |
10559 | ++s; | |
10560 | if (*s != '-') | |
10561 | reg2 = reg1; | |
10562 | else | |
10563 | { | |
10564 | ++s; | |
707bfff6 TS |
10565 | if (!reg_lookup (&s, freg ? RTYPE_FPU |
10566 | : (RTYPE_GP | RTYPE_NUM), ®2)) | |
252b5132 | 10567 | { |
707bfff6 TS |
10568 | as_bad (_("invalid register list")); |
10569 | break; | |
252b5132 RH |
10570 | } |
10571 | } | |
10572 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
10573 | { | |
10574 | mask &= ~ (7 << 3); | |
10575 | mask |= 5 << 3; | |
10576 | } | |
10577 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
10578 | { | |
10579 | mask &= ~ (7 << 3); | |
10580 | mask |= 6 << 3; | |
10581 | } | |
10582 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
10583 | mask |= (reg2 - 3) << 3; | |
10584 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
10585 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 10586 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
10587 | mask |= 1; |
10588 | else | |
10589 | { | |
10590 | as_bad (_("invalid register list")); | |
10591 | break; | |
10592 | } | |
10593 | } | |
10594 | /* The mask is filled in in the opcode table for the | |
10595 | benefit of the disassembler. We remove it before | |
10596 | applying the actual mask. */ | |
10597 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
10598 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
10599 | } | |
10600 | continue; | |
10601 | ||
0499d65b TS |
10602 | case 'm': /* Register list for save insn. */ |
10603 | case 'M': /* Register list for restore insn. */ | |
10604 | { | |
10605 | int opcode = 0; | |
10606 | int framesz = 0, seen_framesz = 0; | |
91d6fa6a | 10607 | int nargs = 0, statics = 0, sregs = 0; |
0499d65b TS |
10608 | |
10609 | while (*s != '\0') | |
10610 | { | |
10611 | unsigned int reg1, reg2; | |
10612 | ||
10613 | SKIP_SPACE_TABS (s); | |
10614 | while (*s == ',') | |
10615 | ++s; | |
10616 | SKIP_SPACE_TABS (s); | |
10617 | ||
10618 | my_getExpression (&imm_expr, s); | |
10619 | if (imm_expr.X_op == O_constant) | |
10620 | { | |
10621 | /* Handle the frame size. */ | |
10622 | if (seen_framesz) | |
10623 | { | |
10624 | as_bad (_("more than one frame size in list")); | |
10625 | break; | |
10626 | } | |
10627 | seen_framesz = 1; | |
10628 | framesz = imm_expr.X_add_number; | |
10629 | imm_expr.X_op = O_absent; | |
10630 | s = expr_end; | |
10631 | continue; | |
10632 | } | |
10633 | ||
707bfff6 | 10634 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
0499d65b TS |
10635 | { |
10636 | as_bad (_("can't parse register list")); | |
10637 | break; | |
10638 | } | |
0499d65b | 10639 | |
707bfff6 TS |
10640 | while (*s == ' ') |
10641 | ++s; | |
10642 | ||
0499d65b TS |
10643 | if (*s != '-') |
10644 | reg2 = reg1; | |
10645 | else | |
10646 | { | |
10647 | ++s; | |
707bfff6 TS |
10648 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®2) |
10649 | || reg2 < reg1) | |
0499d65b TS |
10650 | { |
10651 | as_bad (_("can't parse register list")); | |
10652 | break; | |
10653 | } | |
0499d65b TS |
10654 | } |
10655 | ||
10656 | while (reg1 <= reg2) | |
10657 | { | |
10658 | if (reg1 >= 4 && reg1 <= 7) | |
10659 | { | |
3a93f742 | 10660 | if (!seen_framesz) |
0499d65b | 10661 | /* args $a0-$a3 */ |
91d6fa6a | 10662 | nargs |= 1 << (reg1 - 4); |
0499d65b TS |
10663 | else |
10664 | /* statics $a0-$a3 */ | |
10665 | statics |= 1 << (reg1 - 4); | |
10666 | } | |
10667 | else if ((reg1 >= 16 && reg1 <= 23) || reg1 == 30) | |
10668 | { | |
10669 | /* $s0-$s8 */ | |
10670 | sregs |= 1 << ((reg1 == 30) ? 8 : (reg1 - 16)); | |
10671 | } | |
10672 | else if (reg1 == 31) | |
10673 | { | |
10674 | /* Add $ra to insn. */ | |
10675 | opcode |= 0x40; | |
10676 | } | |
10677 | else | |
10678 | { | |
10679 | as_bad (_("unexpected register in list")); | |
10680 | break; | |
10681 | } | |
10682 | if (++reg1 == 24) | |
10683 | reg1 = 30; | |
10684 | } | |
10685 | } | |
10686 | ||
10687 | /* Encode args/statics combination. */ | |
91d6fa6a | 10688 | if (nargs & statics) |
0499d65b | 10689 | as_bad (_("arg/static registers overlap")); |
91d6fa6a | 10690 | else if (nargs == 0xf) |
0499d65b TS |
10691 | /* All $a0-$a3 are args. */ |
10692 | opcode |= MIPS16_ALL_ARGS << 16; | |
10693 | else if (statics == 0xf) | |
10694 | /* All $a0-$a3 are statics. */ | |
10695 | opcode |= MIPS16_ALL_STATICS << 16; | |
10696 | else | |
10697 | { | |
10698 | int narg = 0, nstat = 0; | |
10699 | ||
10700 | /* Count arg registers. */ | |
91d6fa6a | 10701 | while (nargs & 0x1) |
0499d65b | 10702 | { |
91d6fa6a | 10703 | nargs >>= 1; |
0499d65b TS |
10704 | narg++; |
10705 | } | |
91d6fa6a | 10706 | if (nargs != 0) |
0499d65b TS |
10707 | as_bad (_("invalid arg register list")); |
10708 | ||
10709 | /* Count static registers. */ | |
10710 | while (statics & 0x8) | |
10711 | { | |
10712 | statics = (statics << 1) & 0xf; | |
10713 | nstat++; | |
10714 | } | |
10715 | if (statics != 0) | |
10716 | as_bad (_("invalid static register list")); | |
10717 | ||
10718 | /* Encode args/statics. */ | |
10719 | opcode |= ((narg << 2) | nstat) << 16; | |
10720 | } | |
10721 | ||
10722 | /* Encode $s0/$s1. */ | |
10723 | if (sregs & (1 << 0)) /* $s0 */ | |
10724 | opcode |= 0x20; | |
10725 | if (sregs & (1 << 1)) /* $s1 */ | |
10726 | opcode |= 0x10; | |
10727 | sregs >>= 2; | |
10728 | ||
10729 | if (sregs != 0) | |
10730 | { | |
10731 | /* Count regs $s2-$s8. */ | |
10732 | int nsreg = 0; | |
10733 | while (sregs & 1) | |
10734 | { | |
10735 | sregs >>= 1; | |
10736 | nsreg++; | |
10737 | } | |
10738 | if (sregs != 0) | |
10739 | as_bad (_("invalid static register list")); | |
10740 | /* Encode $s2-$s8. */ | |
10741 | opcode |= nsreg << 24; | |
10742 | } | |
10743 | ||
10744 | /* Encode frame size. */ | |
10745 | if (!seen_framesz) | |
10746 | as_bad (_("missing frame size")); | |
10747 | else if ((framesz & 7) != 0 || framesz < 0 | |
10748 | || framesz > 0xff * 8) | |
10749 | as_bad (_("invalid frame size")); | |
10750 | else if (framesz != 128 || (opcode >> 16) != 0) | |
10751 | { | |
10752 | framesz /= 8; | |
10753 | opcode |= (((framesz & 0xf0) << 16) | |
10754 | | (framesz & 0x0f)); | |
10755 | } | |
10756 | ||
10757 | /* Finally build the instruction. */ | |
10758 | if ((opcode >> 16) != 0 || framesz == 0) | |
10759 | { | |
10760 | ip->use_extend = TRUE; | |
10761 | ip->extend = opcode >> 16; | |
10762 | } | |
10763 | ip->insn_opcode |= opcode & 0x7f; | |
10764 | } | |
10765 | continue; | |
10766 | ||
252b5132 RH |
10767 | case 'e': /* extend code */ |
10768 | my_getExpression (&imm_expr, s); | |
10769 | check_absolute_expr (ip, &imm_expr); | |
10770 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
10771 | { | |
10772 | as_warn (_("Invalid value for `%s' (%lu)"), | |
10773 | ip->insn_mo->name, | |
10774 | (unsigned long) imm_expr.X_add_number); | |
10775 | imm_expr.X_add_number &= 0x7ff; | |
10776 | } | |
10777 | ip->insn_opcode |= imm_expr.X_add_number; | |
10778 | imm_expr.X_op = O_absent; | |
10779 | s = expr_end; | |
10780 | continue; | |
10781 | ||
10782 | default: | |
10783 | internalError (); | |
10784 | } | |
10785 | break; | |
10786 | } | |
10787 | ||
10788 | /* Args don't match. */ | |
10789 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
10790 | strcmp (insn->name, insn[1].name) == 0) | |
10791 | { | |
10792 | ++insn; | |
10793 | s = argsstart; | |
10794 | continue; | |
10795 | } | |
10796 | ||
10797 | insn_error = _("illegal operands"); | |
10798 | ||
10799 | return; | |
10800 | } | |
10801 | } | |
10802 | ||
10803 | /* This structure holds information we know about a mips16 immediate | |
10804 | argument type. */ | |
10805 | ||
e972090a NC |
10806 | struct mips16_immed_operand |
10807 | { | |
252b5132 RH |
10808 | /* The type code used in the argument string in the opcode table. */ |
10809 | int type; | |
10810 | /* The number of bits in the short form of the opcode. */ | |
10811 | int nbits; | |
10812 | /* The number of bits in the extended form of the opcode. */ | |
10813 | int extbits; | |
10814 | /* The amount by which the short form is shifted when it is used; | |
10815 | for example, the sw instruction has a shift count of 2. */ | |
10816 | int shift; | |
10817 | /* The amount by which the short form is shifted when it is stored | |
10818 | into the instruction code. */ | |
10819 | int op_shift; | |
10820 | /* Non-zero if the short form is unsigned. */ | |
10821 | int unsp; | |
10822 | /* Non-zero if the extended form is unsigned. */ | |
10823 | int extu; | |
10824 | /* Non-zero if the value is PC relative. */ | |
10825 | int pcrel; | |
10826 | }; | |
10827 | ||
10828 | /* The mips16 immediate operand types. */ | |
10829 | ||
10830 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
10831 | { | |
10832 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10833 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10834 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10835 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10836 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
10837 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10838 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10839 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10840 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10841 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
10842 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10843 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10844 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10845 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
10846 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10847 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10848 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10849 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10850 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
10851 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
10852 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
10853 | }; | |
10854 | ||
10855 | #define MIPS16_NUM_IMMED \ | |
10856 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
10857 | ||
10858 | /* Handle a mips16 instruction with an immediate value. This or's the | |
10859 | small immediate value into *INSN. It sets *USE_EXTEND to indicate | |
10860 | whether an extended value is needed; if one is needed, it sets | |
10861 | *EXTEND to the value. The argument type is TYPE. The value is VAL. | |
10862 | If SMALL is true, an unextended opcode was explicitly requested. | |
10863 | If EXT is true, an extended opcode was explicitly requested. If | |
10864 | WARN is true, warn if EXT does not match reality. */ | |
10865 | ||
10866 | static void | |
17a2f251 TS |
10867 | mips16_immed (char *file, unsigned int line, int type, offsetT val, |
10868 | bfd_boolean warn, bfd_boolean small, bfd_boolean ext, | |
10869 | unsigned long *insn, bfd_boolean *use_extend, | |
10870 | unsigned short *extend) | |
252b5132 | 10871 | { |
3994f87e | 10872 | const struct mips16_immed_operand *op; |
252b5132 | 10873 | int mintiny, maxtiny; |
b34976b6 | 10874 | bfd_boolean needext; |
252b5132 RH |
10875 | |
10876 | op = mips16_immed_operands; | |
10877 | while (op->type != type) | |
10878 | { | |
10879 | ++op; | |
9c2799c2 | 10880 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
10881 | } |
10882 | ||
10883 | if (op->unsp) | |
10884 | { | |
10885 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
10886 | { | |
10887 | mintiny = 1; | |
10888 | maxtiny = 1 << op->nbits; | |
10889 | } | |
10890 | else | |
10891 | { | |
10892 | mintiny = 0; | |
10893 | maxtiny = (1 << op->nbits) - 1; | |
10894 | } | |
10895 | } | |
10896 | else | |
10897 | { | |
10898 | mintiny = - (1 << (op->nbits - 1)); | |
10899 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
10900 | } | |
10901 | ||
10902 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
10903 | if (type == 'p' || type == 'q') | |
10904 | val /= 2; | |
10905 | ||
10906 | if ((val & ((1 << op->shift) - 1)) != 0 | |
10907 | || val < (mintiny << op->shift) | |
10908 | || val > (maxtiny << op->shift)) | |
b34976b6 | 10909 | needext = TRUE; |
252b5132 | 10910 | else |
b34976b6 | 10911 | needext = FALSE; |
252b5132 RH |
10912 | |
10913 | if (warn && ext && ! needext) | |
beae10d5 KH |
10914 | as_warn_where (file, line, |
10915 | _("extended operand requested but not required")); | |
252b5132 RH |
10916 | if (small && needext) |
10917 | as_bad_where (file, line, _("invalid unextended operand value")); | |
10918 | ||
10919 | if (small || (! ext && ! needext)) | |
10920 | { | |
10921 | int insnval; | |
10922 | ||
b34976b6 | 10923 | *use_extend = FALSE; |
252b5132 RH |
10924 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); |
10925 | insnval <<= op->op_shift; | |
10926 | *insn |= insnval; | |
10927 | } | |
10928 | else | |
10929 | { | |
10930 | long minext, maxext; | |
10931 | int extval; | |
10932 | ||
10933 | if (op->extu) | |
10934 | { | |
10935 | minext = 0; | |
10936 | maxext = (1 << op->extbits) - 1; | |
10937 | } | |
10938 | else | |
10939 | { | |
10940 | minext = - (1 << (op->extbits - 1)); | |
10941 | maxext = (1 << (op->extbits - 1)) - 1; | |
10942 | } | |
10943 | if (val < minext || val > maxext) | |
10944 | as_bad_where (file, line, | |
10945 | _("operand value out of range for instruction")); | |
10946 | ||
b34976b6 | 10947 | *use_extend = TRUE; |
252b5132 RH |
10948 | if (op->extbits == 16) |
10949 | { | |
10950 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
10951 | val &= 0x1f; | |
10952 | } | |
10953 | else if (op->extbits == 15) | |
10954 | { | |
10955 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
10956 | val &= 0xf; | |
10957 | } | |
10958 | else | |
10959 | { | |
10960 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
10961 | val = 0; | |
10962 | } | |
10963 | ||
10964 | *extend = (unsigned short) extval; | |
10965 | *insn |= val; | |
10966 | } | |
10967 | } | |
10968 | \f | |
d6f16593 | 10969 | struct percent_op_match |
ad8d3bb3 | 10970 | { |
5e0116d5 RS |
10971 | const char *str; |
10972 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
10973 | }; |
10974 | ||
10975 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 10976 | { |
5e0116d5 | 10977 | {"%lo", BFD_RELOC_LO16}, |
ad8d3bb3 | 10978 | #ifdef OBJ_ELF |
5e0116d5 RS |
10979 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
10980 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
10981 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
10982 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
10983 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
10984 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
10985 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
10986 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
10987 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
10988 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
10989 | {"%half", BFD_RELOC_16}, | |
10990 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
10991 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
10992 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
10993 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
10994 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
10995 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
10996 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
10997 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
10998 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
10999 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
ad8d3bb3 | 11000 | #endif |
5e0116d5 | 11001 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
11002 | }; |
11003 | ||
d6f16593 MR |
11004 | static const struct percent_op_match mips16_percent_op[] = |
11005 | { | |
11006 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
11007 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
738e5348 RS |
11008 | {"%got", BFD_RELOC_MIPS16_GOT16}, |
11009 | {"%call16", BFD_RELOC_MIPS16_CALL16}, | |
d6f16593 MR |
11010 | {"%hi", BFD_RELOC_MIPS16_HI16_S} |
11011 | }; | |
11012 | ||
252b5132 | 11013 | |
5e0116d5 RS |
11014 | /* Return true if *STR points to a relocation operator. When returning true, |
11015 | move *STR over the operator and store its relocation code in *RELOC. | |
11016 | Leave both *STR and *RELOC alone when returning false. */ | |
11017 | ||
11018 | static bfd_boolean | |
17a2f251 | 11019 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 11020 | { |
d6f16593 MR |
11021 | const struct percent_op_match *percent_op; |
11022 | size_t limit, i; | |
11023 | ||
11024 | if (mips_opts.mips16) | |
11025 | { | |
11026 | percent_op = mips16_percent_op; | |
11027 | limit = ARRAY_SIZE (mips16_percent_op); | |
11028 | } | |
11029 | else | |
11030 | { | |
11031 | percent_op = mips_percent_op; | |
11032 | limit = ARRAY_SIZE (mips_percent_op); | |
11033 | } | |
76b3015f | 11034 | |
d6f16593 | 11035 | for (i = 0; i < limit; i++) |
5e0116d5 | 11036 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 11037 | { |
3f98094e DJ |
11038 | int len = strlen (percent_op[i].str); |
11039 | ||
11040 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
11041 | continue; | |
11042 | ||
5e0116d5 RS |
11043 | *str += strlen (percent_op[i].str); |
11044 | *reloc = percent_op[i].reloc; | |
394f9b3a | 11045 | |
5e0116d5 RS |
11046 | /* Check whether the output BFD supports this relocation. |
11047 | If not, issue an error and fall back on something safe. */ | |
11048 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 11049 | { |
20203fb9 | 11050 | as_bad (_("relocation %s isn't supported by the current ABI"), |
5e0116d5 | 11051 | percent_op[i].str); |
01a3f561 | 11052 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 11053 | } |
5e0116d5 | 11054 | return TRUE; |
394f9b3a | 11055 | } |
5e0116d5 | 11056 | return FALSE; |
394f9b3a | 11057 | } |
ad8d3bb3 | 11058 | |
ad8d3bb3 | 11059 | |
5e0116d5 RS |
11060 | /* Parse string STR as a 16-bit relocatable operand. Store the |
11061 | expression in *EP and the relocations in the array starting | |
11062 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 11063 | |
01a3f561 | 11064 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 11065 | |
5e0116d5 | 11066 | static size_t |
17a2f251 TS |
11067 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
11068 | char *str) | |
ad8d3bb3 | 11069 | { |
5e0116d5 RS |
11070 | bfd_reloc_code_real_type reversed_reloc[3]; |
11071 | size_t reloc_index, i; | |
09b8f35a RS |
11072 | int crux_depth, str_depth; |
11073 | char *crux; | |
5e0116d5 RS |
11074 | |
11075 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
11076 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
11077 | of the main expression and with CRUX_DEPTH containing the number | |
11078 | of open brackets at that point. */ | |
11079 | reloc_index = -1; | |
11080 | str_depth = 0; | |
11081 | do | |
fb1b3232 | 11082 | { |
09b8f35a RS |
11083 | reloc_index++; |
11084 | crux = str; | |
11085 | crux_depth = str_depth; | |
11086 | ||
11087 | /* Skip over whitespace and brackets, keeping count of the number | |
11088 | of brackets. */ | |
11089 | while (*str == ' ' || *str == '\t' || *str == '(') | |
11090 | if (*str++ == '(') | |
11091 | str_depth++; | |
5e0116d5 | 11092 | } |
09b8f35a RS |
11093 | while (*str == '%' |
11094 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
11095 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 11096 | |
09b8f35a | 11097 | my_getExpression (ep, crux); |
5e0116d5 | 11098 | str = expr_end; |
394f9b3a | 11099 | |
5e0116d5 | 11100 | /* Match every open bracket. */ |
09b8f35a | 11101 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 11102 | if (*str++ == ')') |
09b8f35a | 11103 | crux_depth--; |
394f9b3a | 11104 | |
09b8f35a | 11105 | if (crux_depth > 0) |
20203fb9 | 11106 | as_bad (_("unclosed '('")); |
394f9b3a | 11107 | |
5e0116d5 | 11108 | expr_end = str; |
252b5132 | 11109 | |
01a3f561 | 11110 | if (reloc_index != 0) |
64bdfcaf RS |
11111 | { |
11112 | prev_reloc_op_frag = frag_now; | |
11113 | for (i = 0; i < reloc_index; i++) | |
11114 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
11115 | } | |
fb1b3232 | 11116 | |
5e0116d5 | 11117 | return reloc_index; |
252b5132 RH |
11118 | } |
11119 | ||
11120 | static void | |
17a2f251 | 11121 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
11122 | { |
11123 | char *save_in; | |
98aa84af | 11124 | valueT val; |
252b5132 RH |
11125 | |
11126 | save_in = input_line_pointer; | |
11127 | input_line_pointer = str; | |
11128 | expression (ep); | |
11129 | expr_end = input_line_pointer; | |
11130 | input_line_pointer = save_in; | |
11131 | ||
11132 | /* If we are in mips16 mode, and this is an expression based on `.', | |
11133 | then we bump the value of the symbol by 1 since that is how other | |
11134 | text symbols are handled. We don't bother to handle complex | |
11135 | expressions, just `.' plus or minus a constant. */ | |
11136 | if (mips_opts.mips16 | |
11137 | && ep->X_op == O_symbol | |
11138 | && strcmp (S_GET_NAME (ep->X_add_symbol), FAKE_LABEL_NAME) == 0 | |
11139 | && S_GET_SEGMENT (ep->X_add_symbol) == now_seg | |
49309057 ILT |
11140 | && symbol_get_frag (ep->X_add_symbol) == frag_now |
11141 | && symbol_constant_p (ep->X_add_symbol) | |
98aa84af AM |
11142 | && (val = S_GET_VALUE (ep->X_add_symbol)) == frag_now_fix ()) |
11143 | S_SET_VALUE (ep->X_add_symbol, val + 1); | |
252b5132 RH |
11144 | } |
11145 | ||
252b5132 | 11146 | char * |
17a2f251 | 11147 | md_atof (int type, char *litP, int *sizeP) |
252b5132 | 11148 | { |
499ac353 | 11149 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
252b5132 RH |
11150 | } |
11151 | ||
11152 | void | |
17a2f251 | 11153 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
11154 | { |
11155 | if (target_big_endian) | |
11156 | number_to_chars_bigendian (buf, val, n); | |
11157 | else | |
11158 | number_to_chars_littleendian (buf, val, n); | |
11159 | } | |
11160 | \f | |
ae948b86 | 11161 | #ifdef OBJ_ELF |
e013f690 TS |
11162 | static int support_64bit_objects(void) |
11163 | { | |
11164 | const char **list, **l; | |
aa3d8fdf | 11165 | int yes; |
e013f690 TS |
11166 | |
11167 | list = bfd_target_list (); | |
11168 | for (l = list; *l != NULL; l++) | |
11169 | #ifdef TE_TMIPS | |
11170 | /* This is traditional mips */ | |
11171 | if (strcmp (*l, "elf64-tradbigmips") == 0 | |
11172 | || strcmp (*l, "elf64-tradlittlemips") == 0) | |
11173 | #else | |
11174 | if (strcmp (*l, "elf64-bigmips") == 0 | |
11175 | || strcmp (*l, "elf64-littlemips") == 0) | |
11176 | #endif | |
11177 | break; | |
aa3d8fdf | 11178 | yes = (*l != NULL); |
e013f690 | 11179 | free (list); |
aa3d8fdf | 11180 | return yes; |
e013f690 | 11181 | } |
ae948b86 | 11182 | #endif /* OBJ_ELF */ |
e013f690 | 11183 | |
78849248 | 11184 | const char *md_shortopts = "O::g::G:"; |
252b5132 | 11185 | |
23fce1e3 NC |
11186 | enum options |
11187 | { | |
11188 | OPTION_MARCH = OPTION_MD_BASE, | |
11189 | OPTION_MTUNE, | |
11190 | OPTION_MIPS1, | |
11191 | OPTION_MIPS2, | |
11192 | OPTION_MIPS3, | |
11193 | OPTION_MIPS4, | |
11194 | OPTION_MIPS5, | |
11195 | OPTION_MIPS32, | |
11196 | OPTION_MIPS64, | |
11197 | OPTION_MIPS32R2, | |
11198 | OPTION_MIPS64R2, | |
11199 | OPTION_MIPS16, | |
11200 | OPTION_NO_MIPS16, | |
11201 | OPTION_MIPS3D, | |
11202 | OPTION_NO_MIPS3D, | |
11203 | OPTION_MDMX, | |
11204 | OPTION_NO_MDMX, | |
11205 | OPTION_DSP, | |
11206 | OPTION_NO_DSP, | |
11207 | OPTION_MT, | |
11208 | OPTION_NO_MT, | |
11209 | OPTION_SMARTMIPS, | |
11210 | OPTION_NO_SMARTMIPS, | |
11211 | OPTION_DSPR2, | |
11212 | OPTION_NO_DSPR2, | |
11213 | OPTION_COMPAT_ARCH_BASE, | |
11214 | OPTION_M4650, | |
11215 | OPTION_NO_M4650, | |
11216 | OPTION_M4010, | |
11217 | OPTION_NO_M4010, | |
11218 | OPTION_M4100, | |
11219 | OPTION_NO_M4100, | |
11220 | OPTION_M3900, | |
11221 | OPTION_NO_M3900, | |
11222 | OPTION_M7000_HILO_FIX, | |
6a32d874 CM |
11223 | OPTION_MNO_7000_HILO_FIX, |
11224 | OPTION_FIX_24K, | |
11225 | OPTION_NO_FIX_24K, | |
c67a084a NC |
11226 | OPTION_FIX_LOONGSON2F_JUMP, |
11227 | OPTION_NO_FIX_LOONGSON2F_JUMP, | |
11228 | OPTION_FIX_LOONGSON2F_NOP, | |
11229 | OPTION_NO_FIX_LOONGSON2F_NOP, | |
23fce1e3 NC |
11230 | OPTION_FIX_VR4120, |
11231 | OPTION_NO_FIX_VR4120, | |
11232 | OPTION_FIX_VR4130, | |
11233 | OPTION_NO_FIX_VR4130, | |
d954098f DD |
11234 | OPTION_FIX_CN63XXP1, |
11235 | OPTION_NO_FIX_CN63XXP1, | |
23fce1e3 NC |
11236 | OPTION_TRAP, |
11237 | OPTION_BREAK, | |
11238 | OPTION_EB, | |
11239 | OPTION_EL, | |
11240 | OPTION_FP32, | |
11241 | OPTION_GP32, | |
11242 | OPTION_CONSTRUCT_FLOATS, | |
11243 | OPTION_NO_CONSTRUCT_FLOATS, | |
11244 | OPTION_FP64, | |
11245 | OPTION_GP64, | |
11246 | OPTION_RELAX_BRANCH, | |
11247 | OPTION_NO_RELAX_BRANCH, | |
11248 | OPTION_MSHARED, | |
11249 | OPTION_MNO_SHARED, | |
11250 | OPTION_MSYM32, | |
11251 | OPTION_MNO_SYM32, | |
11252 | OPTION_SOFT_FLOAT, | |
11253 | OPTION_HARD_FLOAT, | |
11254 | OPTION_SINGLE_FLOAT, | |
11255 | OPTION_DOUBLE_FLOAT, | |
11256 | OPTION_32, | |
11257 | #ifdef OBJ_ELF | |
11258 | OPTION_CALL_SHARED, | |
11259 | OPTION_CALL_NONPIC, | |
11260 | OPTION_NON_SHARED, | |
11261 | OPTION_XGOT, | |
11262 | OPTION_MABI, | |
11263 | OPTION_N32, | |
11264 | OPTION_64, | |
11265 | OPTION_MDEBUG, | |
11266 | OPTION_NO_MDEBUG, | |
11267 | OPTION_PDR, | |
11268 | OPTION_NO_PDR, | |
11269 | OPTION_MVXWORKS_PIC, | |
11270 | #endif /* OBJ_ELF */ | |
11271 | OPTION_END_OF_ENUM | |
11272 | }; | |
11273 | ||
e972090a NC |
11274 | struct option md_longopts[] = |
11275 | { | |
f9b4148d | 11276 | /* Options which specify architecture. */ |
f9b4148d | 11277 | {"march", required_argument, NULL, OPTION_MARCH}, |
f9b4148d | 11278 | {"mtune", required_argument, NULL, OPTION_MTUNE}, |
252b5132 RH |
11279 | {"mips0", no_argument, NULL, OPTION_MIPS1}, |
11280 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
252b5132 | 11281 | {"mips2", no_argument, NULL, OPTION_MIPS2}, |
252b5132 | 11282 | {"mips3", no_argument, NULL, OPTION_MIPS3}, |
252b5132 | 11283 | {"mips4", no_argument, NULL, OPTION_MIPS4}, |
ae948b86 | 11284 | {"mips5", no_argument, NULL, OPTION_MIPS5}, |
ae948b86 | 11285 | {"mips32", no_argument, NULL, OPTION_MIPS32}, |
ae948b86 | 11286 | {"mips64", no_argument, NULL, OPTION_MIPS64}, |
f9b4148d | 11287 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, |
5f74bc13 | 11288 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, |
f9b4148d CD |
11289 | |
11290 | /* Options which specify Application Specific Extensions (ASEs). */ | |
f9b4148d | 11291 | {"mips16", no_argument, NULL, OPTION_MIPS16}, |
f9b4148d | 11292 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, |
f9b4148d | 11293 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, |
f9b4148d | 11294 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, |
f9b4148d | 11295 | {"mdmx", no_argument, NULL, OPTION_MDMX}, |
f9b4148d | 11296 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, |
74cd071d | 11297 | {"mdsp", no_argument, NULL, OPTION_DSP}, |
74cd071d | 11298 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, |
ef2e4d86 | 11299 | {"mmt", no_argument, NULL, OPTION_MT}, |
ef2e4d86 | 11300 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, |
e16bfa71 | 11301 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, |
e16bfa71 | 11302 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, |
8b082fb1 | 11303 | {"mdspr2", no_argument, NULL, OPTION_DSPR2}, |
8b082fb1 | 11304 | {"mno-dspr2", no_argument, NULL, OPTION_NO_DSPR2}, |
f9b4148d CD |
11305 | |
11306 | /* Old-style architecture options. Don't add more of these. */ | |
f9b4148d | 11307 | {"m4650", no_argument, NULL, OPTION_M4650}, |
f9b4148d | 11308 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, |
f9b4148d | 11309 | {"m4010", no_argument, NULL, OPTION_M4010}, |
f9b4148d | 11310 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, |
f9b4148d | 11311 | {"m4100", no_argument, NULL, OPTION_M4100}, |
f9b4148d | 11312 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, |
f9b4148d | 11313 | {"m3900", no_argument, NULL, OPTION_M3900}, |
f9b4148d CD |
11314 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, |
11315 | ||
11316 | /* Options which enable bug fixes. */ | |
f9b4148d | 11317 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, |
f9b4148d CD |
11318 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, |
11319 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
c67a084a NC |
11320 | {"mfix-loongson2f-jump", no_argument, NULL, OPTION_FIX_LOONGSON2F_JUMP}, |
11321 | {"mno-fix-loongson2f-jump", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_JUMP}, | |
11322 | {"mfix-loongson2f-nop", no_argument, NULL, OPTION_FIX_LOONGSON2F_NOP}, | |
11323 | {"mno-fix-loongson2f-nop", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_NOP}, | |
d766e8ec RS |
11324 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, |
11325 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
7d8e00cf RS |
11326 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, |
11327 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
6a32d874 CM |
11328 | {"mfix-24k", no_argument, NULL, OPTION_FIX_24K}, |
11329 | {"mno-fix-24k", no_argument, NULL, OPTION_NO_FIX_24K}, | |
d954098f DD |
11330 | {"mfix-cn63xxp1", no_argument, NULL, OPTION_FIX_CN63XXP1}, |
11331 | {"mno-fix-cn63xxp1", no_argument, NULL, OPTION_NO_FIX_CN63XXP1}, | |
f9b4148d CD |
11332 | |
11333 | /* Miscellaneous options. */ | |
252b5132 RH |
11334 | {"trap", no_argument, NULL, OPTION_TRAP}, |
11335 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
252b5132 RH |
11336 | {"break", no_argument, NULL, OPTION_BREAK}, |
11337 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
252b5132 | 11338 | {"EB", no_argument, NULL, OPTION_EB}, |
252b5132 | 11339 | {"EL", no_argument, NULL, OPTION_EL}, |
ae948b86 | 11340 | {"mfp32", no_argument, NULL, OPTION_FP32}, |
c97ef257 | 11341 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
119d663a | 11342 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
119d663a | 11343 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
316f5878 | 11344 | {"mfp64", no_argument, NULL, OPTION_FP64}, |
ae948b86 | 11345 | {"mgp64", no_argument, NULL, OPTION_GP64}, |
4a6a3df4 AO |
11346 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, |
11347 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
aa6975fb ILT |
11348 | {"mshared", no_argument, NULL, OPTION_MSHARED}, |
11349 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
aed1a261 RS |
11350 | {"msym32", no_argument, NULL, OPTION_MSYM32}, |
11351 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
037b32b9 AN |
11352 | {"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT}, |
11353 | {"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT}, | |
037b32b9 AN |
11354 | {"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT}, |
11355 | {"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT}, | |
23fce1e3 NC |
11356 | |
11357 | /* Strictly speaking this next option is ELF specific, | |
11358 | but we allow it for other ports as well in order to | |
11359 | make testing easier. */ | |
11360 | {"32", no_argument, NULL, OPTION_32}, | |
037b32b9 | 11361 | |
f9b4148d | 11362 | /* ELF-specific options. */ |
156c2f8b | 11363 | #ifdef OBJ_ELF |
156c2f8b NC |
11364 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
11365 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
861fb55a | 11366 | {"call_nonpic", no_argument, NULL, OPTION_CALL_NONPIC}, |
156c2f8b NC |
11367 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
11368 | {"xgot", no_argument, NULL, OPTION_XGOT}, | |
ae948b86 | 11369 | {"mabi", required_argument, NULL, OPTION_MABI}, |
e013f690 | 11370 | {"n32", no_argument, NULL, OPTION_N32}, |
156c2f8b | 11371 | {"64", no_argument, NULL, OPTION_64}, |
ecb4347a | 11372 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, |
ecb4347a | 11373 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, |
dcd410fe | 11374 | {"mpdr", no_argument, NULL, OPTION_PDR}, |
dcd410fe | 11375 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, |
0a44bf69 | 11376 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, |
ae948b86 | 11377 | #endif /* OBJ_ELF */ |
f9b4148d | 11378 | |
252b5132 RH |
11379 | {NULL, no_argument, NULL, 0} |
11380 | }; | |
156c2f8b | 11381 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 11382 | |
316f5878 RS |
11383 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
11384 | NEW_VALUE. Warn if another value was already specified. Note: | |
11385 | we have to defer parsing the -march and -mtune arguments in order | |
11386 | to handle 'from-abi' correctly, since the ABI might be specified | |
11387 | in a later argument. */ | |
11388 | ||
11389 | static void | |
17a2f251 | 11390 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
11391 | { |
11392 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
11393 | as_warn (_("A different %s was already specified, is now %s"), | |
11394 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
11395 | new_value); | |
11396 | ||
11397 | *string_ptr = new_value; | |
11398 | } | |
11399 | ||
252b5132 | 11400 | int |
17a2f251 | 11401 | md_parse_option (int c, char *arg) |
252b5132 RH |
11402 | { |
11403 | switch (c) | |
11404 | { | |
119d663a NC |
11405 | case OPTION_CONSTRUCT_FLOATS: |
11406 | mips_disable_float_construction = 0; | |
11407 | break; | |
bdaaa2e1 | 11408 | |
119d663a NC |
11409 | case OPTION_NO_CONSTRUCT_FLOATS: |
11410 | mips_disable_float_construction = 1; | |
11411 | break; | |
bdaaa2e1 | 11412 | |
252b5132 RH |
11413 | case OPTION_TRAP: |
11414 | mips_trap = 1; | |
11415 | break; | |
11416 | ||
11417 | case OPTION_BREAK: | |
11418 | mips_trap = 0; | |
11419 | break; | |
11420 | ||
11421 | case OPTION_EB: | |
11422 | target_big_endian = 1; | |
11423 | break; | |
11424 | ||
11425 | case OPTION_EL: | |
11426 | target_big_endian = 0; | |
11427 | break; | |
11428 | ||
11429 | case 'O': | |
4ffff32f TS |
11430 | if (arg == NULL) |
11431 | mips_optimize = 1; | |
11432 | else if (arg[0] == '0') | |
11433 | mips_optimize = 0; | |
11434 | else if (arg[0] == '1') | |
252b5132 RH |
11435 | mips_optimize = 1; |
11436 | else | |
11437 | mips_optimize = 2; | |
11438 | break; | |
11439 | ||
11440 | case 'g': | |
11441 | if (arg == NULL) | |
11442 | mips_debug = 2; | |
11443 | else | |
11444 | mips_debug = atoi (arg); | |
252b5132 RH |
11445 | break; |
11446 | ||
11447 | case OPTION_MIPS1: | |
316f5878 | 11448 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
11449 | break; |
11450 | ||
11451 | case OPTION_MIPS2: | |
316f5878 | 11452 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
11453 | break; |
11454 | ||
11455 | case OPTION_MIPS3: | |
316f5878 | 11456 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
11457 | break; |
11458 | ||
11459 | case OPTION_MIPS4: | |
316f5878 | 11460 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
11461 | break; |
11462 | ||
84ea6cf2 | 11463 | case OPTION_MIPS5: |
316f5878 | 11464 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
11465 | break; |
11466 | ||
e7af610e | 11467 | case OPTION_MIPS32: |
316f5878 | 11468 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
11469 | break; |
11470 | ||
af7ee8bf CD |
11471 | case OPTION_MIPS32R2: |
11472 | file_mips_isa = ISA_MIPS32R2; | |
11473 | break; | |
11474 | ||
5f74bc13 CD |
11475 | case OPTION_MIPS64R2: |
11476 | file_mips_isa = ISA_MIPS64R2; | |
11477 | break; | |
11478 | ||
84ea6cf2 | 11479 | case OPTION_MIPS64: |
316f5878 | 11480 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
11481 | break; |
11482 | ||
ec68c924 | 11483 | case OPTION_MTUNE: |
316f5878 RS |
11484 | mips_set_option_string (&mips_tune_string, arg); |
11485 | break; | |
ec68c924 | 11486 | |
316f5878 RS |
11487 | case OPTION_MARCH: |
11488 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
11489 | break; |
11490 | ||
11491 | case OPTION_M4650: | |
316f5878 RS |
11492 | mips_set_option_string (&mips_arch_string, "4650"); |
11493 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
11494 | break; |
11495 | ||
11496 | case OPTION_NO_M4650: | |
11497 | break; | |
11498 | ||
11499 | case OPTION_M4010: | |
316f5878 RS |
11500 | mips_set_option_string (&mips_arch_string, "4010"); |
11501 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
11502 | break; |
11503 | ||
11504 | case OPTION_NO_M4010: | |
11505 | break; | |
11506 | ||
11507 | case OPTION_M4100: | |
316f5878 RS |
11508 | mips_set_option_string (&mips_arch_string, "4100"); |
11509 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
11510 | break; |
11511 | ||
11512 | case OPTION_NO_M4100: | |
11513 | break; | |
11514 | ||
252b5132 | 11515 | case OPTION_M3900: |
316f5878 RS |
11516 | mips_set_option_string (&mips_arch_string, "3900"); |
11517 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 11518 | break; |
bdaaa2e1 | 11519 | |
252b5132 RH |
11520 | case OPTION_NO_M3900: |
11521 | break; | |
11522 | ||
deec1734 CD |
11523 | case OPTION_MDMX: |
11524 | mips_opts.ase_mdmx = 1; | |
11525 | break; | |
11526 | ||
11527 | case OPTION_NO_MDMX: | |
11528 | mips_opts.ase_mdmx = 0; | |
11529 | break; | |
11530 | ||
74cd071d CF |
11531 | case OPTION_DSP: |
11532 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 11533 | mips_opts.ase_dspr2 = 0; |
74cd071d CF |
11534 | break; |
11535 | ||
11536 | case OPTION_NO_DSP: | |
8b082fb1 TS |
11537 | mips_opts.ase_dsp = 0; |
11538 | mips_opts.ase_dspr2 = 0; | |
11539 | break; | |
11540 | ||
11541 | case OPTION_DSPR2: | |
11542 | mips_opts.ase_dspr2 = 1; | |
11543 | mips_opts.ase_dsp = 1; | |
11544 | break; | |
11545 | ||
11546 | case OPTION_NO_DSPR2: | |
11547 | mips_opts.ase_dspr2 = 0; | |
74cd071d CF |
11548 | mips_opts.ase_dsp = 0; |
11549 | break; | |
11550 | ||
ef2e4d86 CF |
11551 | case OPTION_MT: |
11552 | mips_opts.ase_mt = 1; | |
11553 | break; | |
11554 | ||
11555 | case OPTION_NO_MT: | |
11556 | mips_opts.ase_mt = 0; | |
11557 | break; | |
11558 | ||
252b5132 RH |
11559 | case OPTION_MIPS16: |
11560 | mips_opts.mips16 = 1; | |
7d10b47d | 11561 | mips_no_prev_insn (); |
252b5132 RH |
11562 | break; |
11563 | ||
11564 | case OPTION_NO_MIPS16: | |
11565 | mips_opts.mips16 = 0; | |
7d10b47d | 11566 | mips_no_prev_insn (); |
252b5132 RH |
11567 | break; |
11568 | ||
1f25f5d3 CD |
11569 | case OPTION_MIPS3D: |
11570 | mips_opts.ase_mips3d = 1; | |
11571 | break; | |
11572 | ||
11573 | case OPTION_NO_MIPS3D: | |
11574 | mips_opts.ase_mips3d = 0; | |
11575 | break; | |
11576 | ||
e16bfa71 TS |
11577 | case OPTION_SMARTMIPS: |
11578 | mips_opts.ase_smartmips = 1; | |
11579 | break; | |
11580 | ||
11581 | case OPTION_NO_SMARTMIPS: | |
11582 | mips_opts.ase_smartmips = 0; | |
11583 | break; | |
11584 | ||
6a32d874 CM |
11585 | case OPTION_FIX_24K: |
11586 | mips_fix_24k = 1; | |
11587 | break; | |
11588 | ||
11589 | case OPTION_NO_FIX_24K: | |
11590 | mips_fix_24k = 0; | |
11591 | break; | |
11592 | ||
c67a084a NC |
11593 | case OPTION_FIX_LOONGSON2F_JUMP: |
11594 | mips_fix_loongson2f_jump = TRUE; | |
11595 | break; | |
11596 | ||
11597 | case OPTION_NO_FIX_LOONGSON2F_JUMP: | |
11598 | mips_fix_loongson2f_jump = FALSE; | |
11599 | break; | |
11600 | ||
11601 | case OPTION_FIX_LOONGSON2F_NOP: | |
11602 | mips_fix_loongson2f_nop = TRUE; | |
11603 | break; | |
11604 | ||
11605 | case OPTION_NO_FIX_LOONGSON2F_NOP: | |
11606 | mips_fix_loongson2f_nop = FALSE; | |
11607 | break; | |
11608 | ||
d766e8ec RS |
11609 | case OPTION_FIX_VR4120: |
11610 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
11611 | break; |
11612 | ||
d766e8ec RS |
11613 | case OPTION_NO_FIX_VR4120: |
11614 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
11615 | break; |
11616 | ||
7d8e00cf RS |
11617 | case OPTION_FIX_VR4130: |
11618 | mips_fix_vr4130 = 1; | |
11619 | break; | |
11620 | ||
11621 | case OPTION_NO_FIX_VR4130: | |
11622 | mips_fix_vr4130 = 0; | |
11623 | break; | |
11624 | ||
d954098f DD |
11625 | case OPTION_FIX_CN63XXP1: |
11626 | mips_fix_cn63xxp1 = TRUE; | |
11627 | break; | |
11628 | ||
11629 | case OPTION_NO_FIX_CN63XXP1: | |
11630 | mips_fix_cn63xxp1 = FALSE; | |
11631 | break; | |
11632 | ||
4a6a3df4 AO |
11633 | case OPTION_RELAX_BRANCH: |
11634 | mips_relax_branch = 1; | |
11635 | break; | |
11636 | ||
11637 | case OPTION_NO_RELAX_BRANCH: | |
11638 | mips_relax_branch = 0; | |
11639 | break; | |
11640 | ||
aa6975fb ILT |
11641 | case OPTION_MSHARED: |
11642 | mips_in_shared = TRUE; | |
11643 | break; | |
11644 | ||
11645 | case OPTION_MNO_SHARED: | |
11646 | mips_in_shared = FALSE; | |
11647 | break; | |
11648 | ||
aed1a261 RS |
11649 | case OPTION_MSYM32: |
11650 | mips_opts.sym32 = TRUE; | |
11651 | break; | |
11652 | ||
11653 | case OPTION_MNO_SYM32: | |
11654 | mips_opts.sym32 = FALSE; | |
11655 | break; | |
11656 | ||
0f074f60 | 11657 | #ifdef OBJ_ELF |
252b5132 RH |
11658 | /* When generating ELF code, we permit -KPIC and -call_shared to |
11659 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
11660 | intended to be compatible with Irix 5. */ | |
11661 | case OPTION_CALL_SHARED: | |
f43abd2b | 11662 | if (!IS_ELF) |
252b5132 RH |
11663 | { |
11664 | as_bad (_("-call_shared is supported only for ELF format")); | |
11665 | return 0; | |
11666 | } | |
11667 | mips_pic = SVR4_PIC; | |
143d77c5 | 11668 | mips_abicalls = TRUE; |
252b5132 RH |
11669 | break; |
11670 | ||
861fb55a DJ |
11671 | case OPTION_CALL_NONPIC: |
11672 | if (!IS_ELF) | |
11673 | { | |
11674 | as_bad (_("-call_nonpic is supported only for ELF format")); | |
11675 | return 0; | |
11676 | } | |
11677 | mips_pic = NO_PIC; | |
11678 | mips_abicalls = TRUE; | |
11679 | break; | |
11680 | ||
252b5132 | 11681 | case OPTION_NON_SHARED: |
f43abd2b | 11682 | if (!IS_ELF) |
252b5132 RH |
11683 | { |
11684 | as_bad (_("-non_shared is supported only for ELF format")); | |
11685 | return 0; | |
11686 | } | |
11687 | mips_pic = NO_PIC; | |
143d77c5 | 11688 | mips_abicalls = FALSE; |
252b5132 RH |
11689 | break; |
11690 | ||
44075ae2 TS |
11691 | /* The -xgot option tells the assembler to use 32 bit offsets |
11692 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
11693 | compatibility. */ |
11694 | case OPTION_XGOT: | |
11695 | mips_big_got = 1; | |
11696 | break; | |
0f074f60 | 11697 | #endif /* OBJ_ELF */ |
252b5132 RH |
11698 | |
11699 | case 'G': | |
6caf9ef4 TS |
11700 | g_switch_value = atoi (arg); |
11701 | g_switch_seen = 1; | |
252b5132 RH |
11702 | break; |
11703 | ||
34ba82a8 TS |
11704 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
11705 | and -mabi=64. */ | |
252b5132 | 11706 | case OPTION_32: |
23fce1e3 NC |
11707 | if (IS_ELF) |
11708 | mips_abi = O32_ABI; | |
11709 | /* We silently ignore -32 for non-ELF targets. This greatly | |
11710 | simplifies the construction of the MIPS GAS test cases. */ | |
252b5132 RH |
11711 | break; |
11712 | ||
23fce1e3 | 11713 | #ifdef OBJ_ELF |
e013f690 | 11714 | case OPTION_N32: |
f43abd2b | 11715 | if (!IS_ELF) |
34ba82a8 TS |
11716 | { |
11717 | as_bad (_("-n32 is supported for ELF format only")); | |
11718 | return 0; | |
11719 | } | |
316f5878 | 11720 | mips_abi = N32_ABI; |
e013f690 | 11721 | break; |
252b5132 | 11722 | |
e013f690 | 11723 | case OPTION_64: |
f43abd2b | 11724 | if (!IS_ELF) |
34ba82a8 TS |
11725 | { |
11726 | as_bad (_("-64 is supported for ELF format only")); | |
11727 | return 0; | |
11728 | } | |
316f5878 | 11729 | mips_abi = N64_ABI; |
f43abd2b | 11730 | if (!support_64bit_objects()) |
e013f690 | 11731 | as_fatal (_("No compiled in support for 64 bit object file format")); |
252b5132 | 11732 | break; |
ae948b86 | 11733 | #endif /* OBJ_ELF */ |
252b5132 | 11734 | |
c97ef257 | 11735 | case OPTION_GP32: |
a325df1d | 11736 | file_mips_gp32 = 1; |
c97ef257 AH |
11737 | break; |
11738 | ||
11739 | case OPTION_GP64: | |
a325df1d | 11740 | file_mips_gp32 = 0; |
c97ef257 | 11741 | break; |
252b5132 | 11742 | |
ca4e0257 | 11743 | case OPTION_FP32: |
a325df1d | 11744 | file_mips_fp32 = 1; |
316f5878 RS |
11745 | break; |
11746 | ||
11747 | case OPTION_FP64: | |
11748 | file_mips_fp32 = 0; | |
ca4e0257 RS |
11749 | break; |
11750 | ||
037b32b9 AN |
11751 | case OPTION_SINGLE_FLOAT: |
11752 | file_mips_single_float = 1; | |
11753 | break; | |
11754 | ||
11755 | case OPTION_DOUBLE_FLOAT: | |
11756 | file_mips_single_float = 0; | |
11757 | break; | |
11758 | ||
11759 | case OPTION_SOFT_FLOAT: | |
11760 | file_mips_soft_float = 1; | |
11761 | break; | |
11762 | ||
11763 | case OPTION_HARD_FLOAT: | |
11764 | file_mips_soft_float = 0; | |
11765 | break; | |
11766 | ||
ae948b86 | 11767 | #ifdef OBJ_ELF |
252b5132 | 11768 | case OPTION_MABI: |
f43abd2b | 11769 | if (!IS_ELF) |
34ba82a8 TS |
11770 | { |
11771 | as_bad (_("-mabi is supported for ELF format only")); | |
11772 | return 0; | |
11773 | } | |
e013f690 | 11774 | if (strcmp (arg, "32") == 0) |
316f5878 | 11775 | mips_abi = O32_ABI; |
e013f690 | 11776 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 11777 | mips_abi = O64_ABI; |
e013f690 | 11778 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 11779 | mips_abi = N32_ABI; |
e013f690 TS |
11780 | else if (strcmp (arg, "64") == 0) |
11781 | { | |
316f5878 | 11782 | mips_abi = N64_ABI; |
e013f690 TS |
11783 | if (! support_64bit_objects()) |
11784 | as_fatal (_("No compiled in support for 64 bit object file " | |
11785 | "format")); | |
11786 | } | |
11787 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 11788 | mips_abi = EABI_ABI; |
e013f690 | 11789 | else |
da0e507f TS |
11790 | { |
11791 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
11792 | return 0; | |
11793 | } | |
252b5132 | 11794 | break; |
e013f690 | 11795 | #endif /* OBJ_ELF */ |
252b5132 | 11796 | |
6b76fefe | 11797 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 11798 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
11799 | break; |
11800 | ||
9ee72ff1 | 11801 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 11802 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
11803 | break; |
11804 | ||
ecb4347a DJ |
11805 | #ifdef OBJ_ELF |
11806 | case OPTION_MDEBUG: | |
b34976b6 | 11807 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
11808 | break; |
11809 | ||
11810 | case OPTION_NO_MDEBUG: | |
b34976b6 | 11811 | mips_flag_mdebug = FALSE; |
ecb4347a | 11812 | break; |
dcd410fe RO |
11813 | |
11814 | case OPTION_PDR: | |
11815 | mips_flag_pdr = TRUE; | |
11816 | break; | |
11817 | ||
11818 | case OPTION_NO_PDR: | |
11819 | mips_flag_pdr = FALSE; | |
11820 | break; | |
0a44bf69 RS |
11821 | |
11822 | case OPTION_MVXWORKS_PIC: | |
11823 | mips_pic = VXWORKS_PIC; | |
11824 | break; | |
ecb4347a DJ |
11825 | #endif /* OBJ_ELF */ |
11826 | ||
252b5132 RH |
11827 | default: |
11828 | return 0; | |
11829 | } | |
11830 | ||
c67a084a NC |
11831 | mips_fix_loongson2f = mips_fix_loongson2f_nop || mips_fix_loongson2f_jump; |
11832 | ||
252b5132 RH |
11833 | return 1; |
11834 | } | |
316f5878 RS |
11835 | \f |
11836 | /* Set up globals to generate code for the ISA or processor | |
11837 | described by INFO. */ | |
252b5132 | 11838 | |
252b5132 | 11839 | static void |
17a2f251 | 11840 | mips_set_architecture (const struct mips_cpu_info *info) |
252b5132 | 11841 | { |
316f5878 | 11842 | if (info != 0) |
252b5132 | 11843 | { |
fef14a42 TS |
11844 | file_mips_arch = info->cpu; |
11845 | mips_opts.arch = info->cpu; | |
316f5878 | 11846 | mips_opts.isa = info->isa; |
252b5132 | 11847 | } |
252b5132 RH |
11848 | } |
11849 | ||
252b5132 | 11850 | |
316f5878 | 11851 | /* Likewise for tuning. */ |
252b5132 | 11852 | |
316f5878 | 11853 | static void |
17a2f251 | 11854 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
11855 | { |
11856 | if (info != 0) | |
fef14a42 | 11857 | mips_tune = info->cpu; |
316f5878 | 11858 | } |
80cc45a5 | 11859 | |
34ba82a8 | 11860 | |
252b5132 | 11861 | void |
17a2f251 | 11862 | mips_after_parse_args (void) |
e9670677 | 11863 | { |
fef14a42 TS |
11864 | const struct mips_cpu_info *arch_info = 0; |
11865 | const struct mips_cpu_info *tune_info = 0; | |
11866 | ||
e9670677 | 11867 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 11868 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 11869 | { |
6caf9ef4 | 11870 | if (g_switch_seen && g_switch_value != 0) |
e9670677 MR |
11871 | as_bad (_("-G not supported in this configuration.")); |
11872 | g_switch_value = 0; | |
11873 | } | |
11874 | ||
cac012d6 AO |
11875 | if (mips_abi == NO_ABI) |
11876 | mips_abi = MIPS_DEFAULT_ABI; | |
11877 | ||
22923709 RS |
11878 | /* The following code determines the architecture and register size. |
11879 | Similar code was added to GCC 3.3 (see override_options() in | |
11880 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
11881 | as much as possible. */ | |
e9670677 | 11882 | |
316f5878 | 11883 | if (mips_arch_string != 0) |
fef14a42 | 11884 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 11885 | |
316f5878 | 11886 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 11887 | { |
316f5878 | 11888 | /* Handle -mipsN. At this point, file_mips_isa contains the |
fef14a42 | 11889 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 11890 | the -march selection (if any). */ |
fef14a42 | 11891 | if (arch_info != 0) |
e9670677 | 11892 | { |
316f5878 RS |
11893 | /* -march takes precedence over -mipsN, since it is more descriptive. |
11894 | There's no harm in specifying both as long as the ISA levels | |
11895 | are the same. */ | |
fef14a42 | 11896 | if (file_mips_isa != arch_info->isa) |
316f5878 RS |
11897 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), |
11898 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
fef14a42 | 11899 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 11900 | } |
316f5878 | 11901 | else |
fef14a42 | 11902 | arch_info = mips_cpu_info_from_isa (file_mips_isa); |
e9670677 MR |
11903 | } |
11904 | ||
fef14a42 TS |
11905 | if (arch_info == 0) |
11906 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
e9670677 | 11907 | |
fef14a42 | 11908 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
20203fb9 | 11909 | as_bad (_("-march=%s is not compatible with the selected ABI"), |
fef14a42 TS |
11910 | arch_info->name); |
11911 | ||
11912 | mips_set_architecture (arch_info); | |
11913 | ||
11914 | /* Optimize for file_mips_arch, unless -mtune selects a different processor. */ | |
11915 | if (mips_tune_string != 0) | |
11916 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 11917 | |
fef14a42 TS |
11918 | if (tune_info == 0) |
11919 | mips_set_tune (arch_info); | |
11920 | else | |
11921 | mips_set_tune (tune_info); | |
e9670677 | 11922 | |
316f5878 | 11923 | if (file_mips_gp32 >= 0) |
e9670677 | 11924 | { |
316f5878 RS |
11925 | /* The user specified the size of the integer registers. Make sure |
11926 | it agrees with the ABI and ISA. */ | |
11927 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
11928 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
11929 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
11930 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
11931 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
11932 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
11933 | } |
11934 | else | |
11935 | { | |
316f5878 RS |
11936 | /* Infer the integer register size from the ABI and processor. |
11937 | Restrict ourselves to 32-bit registers if that's all the | |
11938 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
11939 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
11940 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
11941 | } |
11942 | ||
ad3fea08 TS |
11943 | switch (file_mips_fp32) |
11944 | { | |
11945 | default: | |
11946 | case -1: | |
11947 | /* No user specified float register size. | |
11948 | ??? GAS treats single-float processors as though they had 64-bit | |
11949 | float registers (although it complains when double-precision | |
11950 | instructions are used). As things stand, saying they have 32-bit | |
11951 | registers would lead to spurious "register must be even" messages. | |
11952 | So here we assume float registers are never smaller than the | |
11953 | integer ones. */ | |
11954 | if (file_mips_gp32 == 0) | |
11955 | /* 64-bit integer registers implies 64-bit float registers. */ | |
11956 | file_mips_fp32 = 0; | |
11957 | else if ((mips_opts.ase_mips3d > 0 || mips_opts.ase_mdmx > 0) | |
11958 | && ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
11959 | /* -mips3d and -mdmx imply 64-bit float registers, if possible. */ | |
11960 | file_mips_fp32 = 0; | |
11961 | else | |
11962 | /* 32-bit float registers. */ | |
11963 | file_mips_fp32 = 1; | |
11964 | break; | |
11965 | ||
11966 | /* The user specified the size of the float registers. Check if it | |
11967 | agrees with the ABI and ISA. */ | |
11968 | case 0: | |
11969 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
11970 | as_bad (_("-mfp64 used with a 32-bit fpu")); | |
11971 | else if (ABI_NEEDS_32BIT_REGS (mips_abi) | |
11972 | && !ISA_HAS_MXHC1 (mips_opts.isa)) | |
11973 | as_warn (_("-mfp64 used with a 32-bit ABI")); | |
11974 | break; | |
11975 | case 1: | |
11976 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
11977 | as_warn (_("-mfp32 used with a 64-bit ABI")); | |
11978 | break; | |
11979 | } | |
e9670677 | 11980 | |
316f5878 | 11981 | /* End of GCC-shared inference code. */ |
e9670677 | 11982 | |
17a2f251 TS |
11983 | /* This flag is set when we have a 64-bit capable CPU but use only |
11984 | 32-bit wide registers. Note that EABI does not use it. */ | |
11985 | if (ISA_HAS_64BIT_REGS (mips_opts.isa) | |
11986 | && ((mips_abi == NO_ABI && file_mips_gp32 == 1) | |
11987 | || mips_abi == O32_ABI)) | |
316f5878 | 11988 | mips_32bitmode = 1; |
e9670677 MR |
11989 | |
11990 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
11991 | as_bad (_("trap exception not supported at ISA 1")); | |
11992 | ||
e9670677 MR |
11993 | /* If the selected architecture includes support for ASEs, enable |
11994 | generation of code for them. */ | |
a4672219 | 11995 | if (mips_opts.mips16 == -1) |
fef14a42 | 11996 | mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_arch)) ? 1 : 0; |
ffdefa66 | 11997 | if (mips_opts.ase_mips3d == -1) |
65263ce3 | 11998 | mips_opts.ase_mips3d = ((arch_info->flags & MIPS_CPU_ASE_MIPS3D) |
ad3fea08 TS |
11999 | && file_mips_fp32 == 0) ? 1 : 0; |
12000 | if (mips_opts.ase_mips3d && file_mips_fp32 == 1) | |
12001 | as_bad (_("-mfp32 used with -mips3d")); | |
12002 | ||
ffdefa66 | 12003 | if (mips_opts.ase_mdmx == -1) |
65263ce3 | 12004 | mips_opts.ase_mdmx = ((arch_info->flags & MIPS_CPU_ASE_MDMX) |
ad3fea08 TS |
12005 | && file_mips_fp32 == 0) ? 1 : 0; |
12006 | if (mips_opts.ase_mdmx && file_mips_fp32 == 1) | |
12007 | as_bad (_("-mfp32 used with -mdmx")); | |
12008 | ||
12009 | if (mips_opts.ase_smartmips == -1) | |
12010 | mips_opts.ase_smartmips = (arch_info->flags & MIPS_CPU_ASE_SMARTMIPS) ? 1 : 0; | |
12011 | if (mips_opts.ase_smartmips && !ISA_SUPPORTS_SMARTMIPS) | |
20203fb9 NC |
12012 | as_warn (_("%s ISA does not support SmartMIPS"), |
12013 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 12014 | |
74cd071d | 12015 | if (mips_opts.ase_dsp == -1) |
ad3fea08 TS |
12016 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; |
12017 | if (mips_opts.ase_dsp && !ISA_SUPPORTS_DSP_ASE) | |
20203fb9 NC |
12018 | as_warn (_("%s ISA does not support DSP ASE"), |
12019 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 12020 | |
8b082fb1 TS |
12021 | if (mips_opts.ase_dspr2 == -1) |
12022 | { | |
12023 | mips_opts.ase_dspr2 = (arch_info->flags & MIPS_CPU_ASE_DSPR2) ? 1 : 0; | |
12024 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; | |
12025 | } | |
12026 | if (mips_opts.ase_dspr2 && !ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 NC |
12027 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
12028 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
8b082fb1 | 12029 | |
ef2e4d86 | 12030 | if (mips_opts.ase_mt == -1) |
ad3fea08 TS |
12031 | mips_opts.ase_mt = (arch_info->flags & MIPS_CPU_ASE_MT) ? 1 : 0; |
12032 | if (mips_opts.ase_mt && !ISA_SUPPORTS_MT_ASE) | |
20203fb9 NC |
12033 | as_warn (_("%s ISA does not support MT ASE"), |
12034 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
e9670677 | 12035 | |
e9670677 | 12036 | file_mips_isa = mips_opts.isa; |
a4672219 | 12037 | file_ase_mips16 = mips_opts.mips16; |
e9670677 MR |
12038 | file_ase_mips3d = mips_opts.ase_mips3d; |
12039 | file_ase_mdmx = mips_opts.ase_mdmx; | |
e16bfa71 | 12040 | file_ase_smartmips = mips_opts.ase_smartmips; |
74cd071d | 12041 | file_ase_dsp = mips_opts.ase_dsp; |
8b082fb1 | 12042 | file_ase_dspr2 = mips_opts.ase_dspr2; |
ef2e4d86 | 12043 | file_ase_mt = mips_opts.ase_mt; |
e9670677 MR |
12044 | mips_opts.gp32 = file_mips_gp32; |
12045 | mips_opts.fp32 = file_mips_fp32; | |
037b32b9 AN |
12046 | mips_opts.soft_float = file_mips_soft_float; |
12047 | mips_opts.single_float = file_mips_single_float; | |
e9670677 | 12048 | |
ecb4347a DJ |
12049 | if (mips_flag_mdebug < 0) |
12050 | { | |
12051 | #ifdef OBJ_MAYBE_ECOFF | |
12052 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
12053 | mips_flag_mdebug = 1; | |
12054 | else | |
12055 | #endif /* OBJ_MAYBE_ECOFF */ | |
12056 | mips_flag_mdebug = 0; | |
12057 | } | |
e9670677 MR |
12058 | } |
12059 | \f | |
12060 | void | |
17a2f251 | 12061 | mips_init_after_args (void) |
252b5132 RH |
12062 | { |
12063 | /* initialize opcodes */ | |
12064 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 12065 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
12066 | } |
12067 | ||
12068 | long | |
17a2f251 | 12069 | md_pcrel_from (fixS *fixP) |
252b5132 | 12070 | { |
a7ebbfdf TS |
12071 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
12072 | switch (fixP->fx_r_type) | |
12073 | { | |
12074 | case BFD_RELOC_16_PCREL_S2: | |
12075 | case BFD_RELOC_MIPS_JMP: | |
12076 | /* Return the address of the delay slot. */ | |
12077 | return addr + 4; | |
12078 | default: | |
58ea3d6a | 12079 | /* We have no relocation type for PC relative MIPS16 instructions. */ |
64817874 TS |
12080 | if (fixP->fx_addsy && S_GET_SEGMENT (fixP->fx_addsy) != now_seg) |
12081 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
12082 | _("PC relative MIPS16 instruction references a different section")); | |
a7ebbfdf TS |
12083 | return addr; |
12084 | } | |
252b5132 RH |
12085 | } |
12086 | ||
252b5132 RH |
12087 | /* This is called before the symbol table is processed. In order to |
12088 | work with gcc when using mips-tfile, we must keep all local labels. | |
12089 | However, in other cases, we want to discard them. If we were | |
12090 | called with -g, but we didn't see any debugging information, it may | |
12091 | mean that gcc is smuggling debugging information through to | |
12092 | mips-tfile, in which case we must generate all local labels. */ | |
12093 | ||
12094 | void | |
17a2f251 | 12095 | mips_frob_file_before_adjust (void) |
252b5132 RH |
12096 | { |
12097 | #ifndef NO_ECOFF_DEBUGGING | |
12098 | if (ECOFF_DEBUGGING | |
12099 | && mips_debug != 0 | |
12100 | && ! ecoff_debugging_seen) | |
12101 | flag_keep_locals = 1; | |
12102 | #endif | |
12103 | } | |
12104 | ||
3b91255e | 12105 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 12106 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
12107 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
12108 | relocation operators. | |
12109 | ||
12110 | For our purposes, a %lo() expression matches a %got() or %hi() | |
12111 | expression if: | |
12112 | ||
12113 | (a) it refers to the same symbol; and | |
12114 | (b) the offset applied in the %lo() expression is no lower than | |
12115 | the offset applied in the %got() or %hi(). | |
12116 | ||
12117 | (b) allows us to cope with code like: | |
12118 | ||
12119 | lui $4,%hi(foo) | |
12120 | lh $4,%lo(foo+2)($4) | |
12121 | ||
12122 | ...which is legal on RELA targets, and has a well-defined behaviour | |
12123 | if the user knows that adding 2 to "foo" will not induce a carry to | |
12124 | the high 16 bits. | |
12125 | ||
12126 | When several %lo()s match a particular %got() or %hi(), we use the | |
12127 | following rules to distinguish them: | |
12128 | ||
12129 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
12130 | higher offsets. | |
12131 | ||
12132 | (2) %lo()s with no matching %got() or %hi() are better than those | |
12133 | that already have a matching %got() or %hi(). | |
12134 | ||
12135 | (3) later %lo()s are better than earlier %lo()s. | |
12136 | ||
12137 | These rules are applied in order. | |
12138 | ||
12139 | (1) means, among other things, that %lo()s with identical offsets are | |
12140 | chosen if they exist. | |
12141 | ||
12142 | (2) means that we won't associate several high-part relocations with | |
12143 | the same low-part relocation unless there's no alternative. Having | |
12144 | several high parts for the same low part is a GNU extension; this rule | |
12145 | allows careful users to avoid it. | |
12146 | ||
12147 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
12148 | with the last high-part relocation being at the front of the list. | |
12149 | It therefore makes sense to choose the last matching low-part | |
12150 | relocation, all other things being equal. It's also easier | |
12151 | to code that way. */ | |
252b5132 RH |
12152 | |
12153 | void | |
17a2f251 | 12154 | mips_frob_file (void) |
252b5132 RH |
12155 | { |
12156 | struct mips_hi_fixup *l; | |
35903be0 | 12157 | bfd_reloc_code_real_type looking_for_rtype = BFD_RELOC_UNUSED; |
252b5132 RH |
12158 | |
12159 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
12160 | { | |
12161 | segment_info_type *seginfo; | |
3b91255e RS |
12162 | bfd_boolean matched_lo_p; |
12163 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 12164 | |
9c2799c2 | 12165 | gas_assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 12166 | |
5919d012 RS |
12167 | /* If a GOT16 relocation turns out to be against a global symbol, |
12168 | there isn't supposed to be a matching LO. */ | |
738e5348 | 12169 | if (got16_reloc_p (l->fixp->fx_r_type) |
5919d012 RS |
12170 | && !pic_need_relax (l->fixp->fx_addsy, l->seg)) |
12171 | continue; | |
12172 | ||
12173 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
12174 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
12175 | continue; |
12176 | ||
252b5132 | 12177 | seginfo = seg_info (l->seg); |
252b5132 | 12178 | |
3b91255e RS |
12179 | /* Set HI_POS to the position of this relocation in the chain. |
12180 | Set LO_POS to the position of the chosen low-part relocation. | |
12181 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
12182 | relocation that matches an immediately-preceding high-part | |
12183 | relocation. */ | |
12184 | hi_pos = NULL; | |
12185 | lo_pos = NULL; | |
12186 | matched_lo_p = FALSE; | |
738e5348 | 12187 | looking_for_rtype = matching_lo_reloc (l->fixp->fx_r_type); |
35903be0 | 12188 | |
3b91255e RS |
12189 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) |
12190 | { | |
12191 | if (*pos == l->fixp) | |
12192 | hi_pos = pos; | |
12193 | ||
35903be0 | 12194 | if ((*pos)->fx_r_type == looking_for_rtype |
30cfc97a | 12195 | && symbol_same_p ((*pos)->fx_addsy, l->fixp->fx_addsy) |
3b91255e RS |
12196 | && (*pos)->fx_offset >= l->fixp->fx_offset |
12197 | && (lo_pos == NULL | |
12198 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
12199 | || (!matched_lo_p | |
12200 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
12201 | lo_pos = pos; | |
12202 | ||
12203 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
12204 | && fixup_has_matching_lo_p (*pos)); | |
12205 | } | |
12206 | ||
12207 | /* If we found a match, remove the high-part relocation from its | |
12208 | current position and insert it before the low-part relocation. | |
12209 | Make the offsets match so that fixup_has_matching_lo_p() | |
12210 | will return true. | |
12211 | ||
12212 | We don't warn about unmatched high-part relocations since some | |
12213 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
12214 | instructions. */ | |
12215 | if (lo_pos != NULL) | |
12216 | { | |
12217 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
12218 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 12219 | { |
3b91255e RS |
12220 | *hi_pos = l->fixp->fx_next; |
12221 | l->fixp->fx_next = *lo_pos; | |
12222 | *lo_pos = l->fixp; | |
252b5132 | 12223 | } |
252b5132 RH |
12224 | } |
12225 | } | |
12226 | } | |
12227 | ||
3e722fb5 | 12228 | /* We may have combined relocations without symbols in the N32/N64 ABI. |
f6688943 | 12229 | We have to prevent gas from dropping them. */ |
252b5132 | 12230 | |
252b5132 | 12231 | int |
17a2f251 | 12232 | mips_force_relocation (fixS *fixp) |
252b5132 | 12233 | { |
ae6063d4 | 12234 | if (generic_force_reloc (fixp)) |
252b5132 RH |
12235 | return 1; |
12236 | ||
f6688943 TS |
12237 | if (HAVE_NEWABI |
12238 | && S_GET_SEGMENT (fixp->fx_addsy) == bfd_abs_section_ptr | |
12239 | && (fixp->fx_r_type == BFD_RELOC_MIPS_SUB | |
738e5348 RS |
12240 | || hi16_reloc_p (fixp->fx_r_type) |
12241 | || lo16_reloc_p (fixp->fx_r_type))) | |
f6688943 TS |
12242 | return 1; |
12243 | ||
3e722fb5 | 12244 | return 0; |
252b5132 RH |
12245 | } |
12246 | ||
12247 | /* Apply a fixup to the object file. */ | |
12248 | ||
94f592af | 12249 | void |
55cf6793 | 12250 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 12251 | { |
874e8986 | 12252 | bfd_byte *buf; |
98aa84af | 12253 | long insn; |
a7ebbfdf | 12254 | reloc_howto_type *howto; |
252b5132 | 12255 | |
a7ebbfdf TS |
12256 | /* We ignore generic BFD relocations we don't know about. */ |
12257 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
12258 | if (! howto) | |
12259 | return; | |
65551fa4 | 12260 | |
9c2799c2 | 12261 | gas_assert (fixP->fx_size == 4 |
252b5132 RH |
12262 | || fixP->fx_r_type == BFD_RELOC_16 |
12263 | || fixP->fx_r_type == BFD_RELOC_64 | |
f6688943 TS |
12264 | || fixP->fx_r_type == BFD_RELOC_CTOR |
12265 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
252b5132 | 12266 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
741d6ea8 JM |
12267 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
12268 | || fixP->fx_r_type == BFD_RELOC_MIPS_TLS_DTPREL64); | |
252b5132 | 12269 | |
a7ebbfdf | 12270 | buf = (bfd_byte *) (fixP->fx_frag->fr_literal + fixP->fx_where); |
252b5132 | 12271 | |
9c2799c2 | 12272 | gas_assert (!fixP->fx_pcrel || fixP->fx_r_type == BFD_RELOC_16_PCREL_S2); |
b1dca8ee RS |
12273 | |
12274 | /* Don't treat parts of a composite relocation as done. There are two | |
12275 | reasons for this: | |
12276 | ||
12277 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
12278 | should nevertheless be emitted if the first part is. | |
12279 | ||
12280 | (2) In normal usage, composite relocations are never assembly-time | |
12281 | constants. The easiest way of dealing with the pathological | |
12282 | exceptions is to generate a relocation against STN_UNDEF and | |
12283 | leave everything up to the linker. */ | |
3994f87e | 12284 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
12285 | fixP->fx_done = 1; |
12286 | ||
12287 | switch (fixP->fx_r_type) | |
12288 | { | |
3f98094e DJ |
12289 | case BFD_RELOC_MIPS_TLS_GD: |
12290 | case BFD_RELOC_MIPS_TLS_LDM: | |
741d6ea8 JM |
12291 | case BFD_RELOC_MIPS_TLS_DTPREL32: |
12292 | case BFD_RELOC_MIPS_TLS_DTPREL64: | |
3f98094e DJ |
12293 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: |
12294 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
12295 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
12296 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: | |
12297 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
12298 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
12299 | /* fall through */ | |
12300 | ||
252b5132 | 12301 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
12302 | case BFD_RELOC_MIPS_SHIFT5: |
12303 | case BFD_RELOC_MIPS_SHIFT6: | |
12304 | case BFD_RELOC_MIPS_GOT_DISP: | |
12305 | case BFD_RELOC_MIPS_GOT_PAGE: | |
12306 | case BFD_RELOC_MIPS_GOT_OFST: | |
12307 | case BFD_RELOC_MIPS_SUB: | |
12308 | case BFD_RELOC_MIPS_INSERT_A: | |
12309 | case BFD_RELOC_MIPS_INSERT_B: | |
12310 | case BFD_RELOC_MIPS_DELETE: | |
12311 | case BFD_RELOC_MIPS_HIGHEST: | |
12312 | case BFD_RELOC_MIPS_HIGHER: | |
12313 | case BFD_RELOC_MIPS_SCN_DISP: | |
12314 | case BFD_RELOC_MIPS_REL16: | |
12315 | case BFD_RELOC_MIPS_RELGOT: | |
12316 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
12317 | case BFD_RELOC_HI16: |
12318 | case BFD_RELOC_HI16_S: | |
cdf6fd85 | 12319 | case BFD_RELOC_GPREL16: |
252b5132 RH |
12320 | case BFD_RELOC_MIPS_LITERAL: |
12321 | case BFD_RELOC_MIPS_CALL16: | |
12322 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 12323 | case BFD_RELOC_GPREL32: |
252b5132 RH |
12324 | case BFD_RELOC_MIPS_GOT_HI16: |
12325 | case BFD_RELOC_MIPS_GOT_LO16: | |
12326 | case BFD_RELOC_MIPS_CALL_HI16: | |
12327 | case BFD_RELOC_MIPS_CALL_LO16: | |
12328 | case BFD_RELOC_MIPS16_GPREL: | |
738e5348 RS |
12329 | case BFD_RELOC_MIPS16_GOT16: |
12330 | case BFD_RELOC_MIPS16_CALL16: | |
d6f16593 MR |
12331 | case BFD_RELOC_MIPS16_HI16: |
12332 | case BFD_RELOC_MIPS16_HI16_S: | |
252b5132 | 12333 | case BFD_RELOC_MIPS16_JMP: |
54f4ddb3 | 12334 | /* Nothing needed to do. The value comes from the reloc entry. */ |
252b5132 RH |
12335 | break; |
12336 | ||
252b5132 RH |
12337 | case BFD_RELOC_64: |
12338 | /* This is handled like BFD_RELOC_32, but we output a sign | |
12339 | extended value if we are only 32 bits. */ | |
3e722fb5 | 12340 | if (fixP->fx_done) |
252b5132 RH |
12341 | { |
12342 | if (8 <= sizeof (valueT)) | |
2132e3a3 | 12343 | md_number_to_chars ((char *) buf, *valP, 8); |
252b5132 RH |
12344 | else |
12345 | { | |
a7ebbfdf | 12346 | valueT hiv; |
252b5132 | 12347 | |
a7ebbfdf | 12348 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
12349 | hiv = 0xffffffff; |
12350 | else | |
12351 | hiv = 0; | |
b215186b | 12352 | md_number_to_chars ((char *)(buf + (target_big_endian ? 4 : 0)), |
a7ebbfdf | 12353 | *valP, 4); |
b215186b | 12354 | md_number_to_chars ((char *)(buf + (target_big_endian ? 0 : 4)), |
a7ebbfdf | 12355 | hiv, 4); |
252b5132 RH |
12356 | } |
12357 | } | |
12358 | break; | |
12359 | ||
056350c6 | 12360 | case BFD_RELOC_RVA: |
252b5132 | 12361 | case BFD_RELOC_32: |
252b5132 RH |
12362 | case BFD_RELOC_16: |
12363 | /* If we are deleting this reloc entry, we must fill in the | |
54f4ddb3 TS |
12364 | value now. This can happen if we have a .word which is not |
12365 | resolved when it appears but is later defined. */ | |
252b5132 | 12366 | if (fixP->fx_done) |
54f4ddb3 | 12367 | md_number_to_chars ((char *) buf, *valP, fixP->fx_size); |
252b5132 RH |
12368 | break; |
12369 | ||
12370 | case BFD_RELOC_LO16: | |
d6f16593 | 12371 | case BFD_RELOC_MIPS16_LO16: |
3e722fb5 CD |
12372 | /* FIXME: Now that embedded-PIC is gone, some of this code/comment |
12373 | may be safe to remove, but if so it's not obvious. */ | |
252b5132 RH |
12374 | /* When handling an embedded PIC switch statement, we can wind |
12375 | up deleting a LO16 reloc. See the 'o' case in mips_ip. */ | |
12376 | if (fixP->fx_done) | |
12377 | { | |
a7ebbfdf | 12378 | if (*valP + 0x8000 > 0xffff) |
252b5132 RH |
12379 | as_bad_where (fixP->fx_file, fixP->fx_line, |
12380 | _("relocation overflow")); | |
252b5132 RH |
12381 | if (target_big_endian) |
12382 | buf += 2; | |
2132e3a3 | 12383 | md_number_to_chars ((char *) buf, *valP, 2); |
252b5132 RH |
12384 | } |
12385 | break; | |
12386 | ||
12387 | case BFD_RELOC_16_PCREL_S2: | |
a7ebbfdf | 12388 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 12389 | as_bad_where (fixP->fx_file, fixP->fx_line, |
bad36eac | 12390 | _("Branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 12391 | |
54f4ddb3 TS |
12392 | /* We need to save the bits in the instruction since fixup_segment() |
12393 | might be deleting the relocation entry (i.e., a branch within | |
12394 | the current segment). */ | |
a7ebbfdf | 12395 | if (! fixP->fx_done) |
bb2d6cd7 | 12396 | break; |
252b5132 | 12397 | |
54f4ddb3 | 12398 | /* Update old instruction data. */ |
252b5132 RH |
12399 | if (target_big_endian) |
12400 | insn = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
12401 | else | |
12402 | insn = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | |
12403 | ||
a7ebbfdf TS |
12404 | if (*valP + 0x20000 <= 0x3ffff) |
12405 | { | |
12406 | insn |= (*valP >> 2) & 0xffff; | |
2132e3a3 | 12407 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
12408 | } |
12409 | else if (mips_pic == NO_PIC | |
12410 | && fixP->fx_done | |
12411 | && fixP->fx_frag->fr_address >= text_section->vma | |
12412 | && (fixP->fx_frag->fr_address | |
587aac4e | 12413 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
12414 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
12415 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
12416 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
12417 | { |
12418 | /* The branch offset is too large. If this is an | |
12419 | unconditional branch, and we are not generating PIC code, | |
12420 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
12421 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
12422 | insn = 0x0c000000; /* jal */ | |
252b5132 | 12423 | else |
a7ebbfdf TS |
12424 | insn = 0x08000000; /* j */ |
12425 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
12426 | fixP->fx_done = 0; | |
12427 | fixP->fx_addsy = section_symbol (text_section); | |
12428 | *valP += md_pcrel_from (fixP); | |
2132e3a3 | 12429 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
12430 | } |
12431 | else | |
12432 | { | |
12433 | /* If we got here, we have branch-relaxation disabled, | |
12434 | and there's nothing we can do to fix this instruction | |
12435 | without turning it into a longer sequence. */ | |
12436 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
12437 | _("Branch out of range")); | |
252b5132 | 12438 | } |
252b5132 RH |
12439 | break; |
12440 | ||
12441 | case BFD_RELOC_VTABLE_INHERIT: | |
12442 | fixP->fx_done = 0; | |
12443 | if (fixP->fx_addsy | |
12444 | && !S_IS_DEFINED (fixP->fx_addsy) | |
12445 | && !S_IS_WEAK (fixP->fx_addsy)) | |
12446 | S_SET_WEAK (fixP->fx_addsy); | |
12447 | break; | |
12448 | ||
12449 | case BFD_RELOC_VTABLE_ENTRY: | |
12450 | fixP->fx_done = 0; | |
12451 | break; | |
12452 | ||
12453 | default: | |
12454 | internalError (); | |
12455 | } | |
a7ebbfdf TS |
12456 | |
12457 | /* Remember value for tc_gen_reloc. */ | |
12458 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
12459 | } |
12460 | ||
252b5132 | 12461 | static symbolS * |
17a2f251 | 12462 | get_symbol (void) |
252b5132 RH |
12463 | { |
12464 | int c; | |
12465 | char *name; | |
12466 | symbolS *p; | |
12467 | ||
12468 | name = input_line_pointer; | |
12469 | c = get_symbol_end (); | |
12470 | p = (symbolS *) symbol_find_or_make (name); | |
12471 | *input_line_pointer = c; | |
12472 | return p; | |
12473 | } | |
12474 | ||
742a56fe RS |
12475 | /* Align the current frag to a given power of two. If a particular |
12476 | fill byte should be used, FILL points to an integer that contains | |
12477 | that byte, otherwise FILL is null. | |
12478 | ||
12479 | The MIPS assembler also automatically adjusts any preceding | |
12480 | label. */ | |
252b5132 RH |
12481 | |
12482 | static void | |
742a56fe | 12483 | mips_align (int to, int *fill, symbolS *label) |
252b5132 | 12484 | { |
7d10b47d | 12485 | mips_emit_delays (); |
742a56fe RS |
12486 | mips_record_mips16_mode (); |
12487 | if (fill == NULL && subseg_text_p (now_seg)) | |
12488 | frag_align_code (to, 0); | |
12489 | else | |
12490 | frag_align (to, fill ? *fill : 0, 0); | |
252b5132 RH |
12491 | record_alignment (now_seg, to); |
12492 | if (label != NULL) | |
12493 | { | |
9c2799c2 | 12494 | gas_assert (S_GET_SEGMENT (label) == now_seg); |
49309057 | 12495 | symbol_set_frag (label, frag_now); |
252b5132 RH |
12496 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
12497 | } | |
12498 | } | |
12499 | ||
12500 | /* Align to a given power of two. .align 0 turns off the automatic | |
12501 | alignment used by the data creating pseudo-ops. */ | |
12502 | ||
12503 | static void | |
17a2f251 | 12504 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 12505 | { |
742a56fe | 12506 | int temp, fill_value, *fill_ptr; |
49954fb4 | 12507 | long max_alignment = 28; |
252b5132 | 12508 | |
54f4ddb3 | 12509 | /* o Note that the assembler pulls down any immediately preceding label |
252b5132 | 12510 | to the aligned address. |
54f4ddb3 | 12511 | o It's not documented but auto alignment is reinstated by |
252b5132 | 12512 | a .align pseudo instruction. |
54f4ddb3 | 12513 | o Note also that after auto alignment is turned off the mips assembler |
252b5132 | 12514 | issues an error on attempt to assemble an improperly aligned data item. |
54f4ddb3 | 12515 | We don't. */ |
252b5132 RH |
12516 | |
12517 | temp = get_absolute_expression (); | |
12518 | if (temp > max_alignment) | |
12519 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
12520 | else if (temp < 0) | |
12521 | { | |
12522 | as_warn (_("Alignment negative: 0 assumed.")); | |
12523 | temp = 0; | |
12524 | } | |
12525 | if (*input_line_pointer == ',') | |
12526 | { | |
f9419b05 | 12527 | ++input_line_pointer; |
742a56fe RS |
12528 | fill_value = get_absolute_expression (); |
12529 | fill_ptr = &fill_value; | |
252b5132 RH |
12530 | } |
12531 | else | |
742a56fe | 12532 | fill_ptr = 0; |
252b5132 RH |
12533 | if (temp) |
12534 | { | |
a8dbcb85 TS |
12535 | segment_info_type *si = seg_info (now_seg); |
12536 | struct insn_label_list *l = si->label_list; | |
54f4ddb3 | 12537 | /* Auto alignment should be switched on by next section change. */ |
252b5132 | 12538 | auto_align = 1; |
742a56fe | 12539 | mips_align (temp, fill_ptr, l != NULL ? l->label : NULL); |
252b5132 RH |
12540 | } |
12541 | else | |
12542 | { | |
12543 | auto_align = 0; | |
12544 | } | |
12545 | ||
12546 | demand_empty_rest_of_line (); | |
12547 | } | |
12548 | ||
252b5132 | 12549 | static void |
17a2f251 | 12550 | s_change_sec (int sec) |
252b5132 RH |
12551 | { |
12552 | segT seg; | |
12553 | ||
252b5132 RH |
12554 | #ifdef OBJ_ELF |
12555 | /* The ELF backend needs to know that we are changing sections, so | |
12556 | that .previous works correctly. We could do something like check | |
b6ff326e | 12557 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
12558 | as it would not be appropriate to use it in the section changing |
12559 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
12560 | This should be cleaner, somehow. */ | |
f43abd2b TS |
12561 | if (IS_ELF) |
12562 | obj_elf_section_change_hook (); | |
252b5132 RH |
12563 | #endif |
12564 | ||
7d10b47d | 12565 | mips_emit_delays (); |
6a32d874 | 12566 | |
252b5132 RH |
12567 | switch (sec) |
12568 | { | |
12569 | case 't': | |
12570 | s_text (0); | |
12571 | break; | |
12572 | case 'd': | |
12573 | s_data (0); | |
12574 | break; | |
12575 | case 'b': | |
12576 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
12577 | demand_empty_rest_of_line (); | |
12578 | break; | |
12579 | ||
12580 | case 'r': | |
4d0d148d TS |
12581 | seg = subseg_new (RDATA_SECTION_NAME, |
12582 | (subsegT) get_absolute_expression ()); | |
f43abd2b | 12583 | if (IS_ELF) |
252b5132 | 12584 | { |
4d0d148d TS |
12585 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
12586 | | SEC_READONLY | SEC_RELOC | |
12587 | | SEC_DATA)); | |
c41e87e3 | 12588 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 12589 | record_alignment (seg, 4); |
252b5132 | 12590 | } |
4d0d148d | 12591 | demand_empty_rest_of_line (); |
252b5132 RH |
12592 | break; |
12593 | ||
12594 | case 's': | |
4d0d148d | 12595 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
f43abd2b | 12596 | if (IS_ELF) |
252b5132 | 12597 | { |
4d0d148d TS |
12598 | bfd_set_section_flags (stdoutput, seg, |
12599 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
c41e87e3 | 12600 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 12601 | record_alignment (seg, 4); |
252b5132 | 12602 | } |
4d0d148d TS |
12603 | demand_empty_rest_of_line (); |
12604 | break; | |
998b3c36 MR |
12605 | |
12606 | case 'B': | |
12607 | seg = subseg_new (".sbss", (subsegT) get_absolute_expression ()); | |
12608 | if (IS_ELF) | |
12609 | { | |
12610 | bfd_set_section_flags (stdoutput, seg, SEC_ALLOC); | |
12611 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
12612 | record_alignment (seg, 4); | |
12613 | } | |
12614 | demand_empty_rest_of_line (); | |
12615 | break; | |
252b5132 RH |
12616 | } |
12617 | ||
12618 | auto_align = 1; | |
12619 | } | |
b34976b6 | 12620 | |
cca86cc8 | 12621 | void |
17a2f251 | 12622 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 12623 | { |
7ed4a06a | 12624 | #ifdef OBJ_ELF |
cca86cc8 SC |
12625 | char *section_name; |
12626 | char c; | |
684022ea | 12627 | char next_c = 0; |
cca86cc8 SC |
12628 | int section_type; |
12629 | int section_flag; | |
12630 | int section_entry_size; | |
12631 | int section_alignment; | |
b34976b6 | 12632 | |
f43abd2b | 12633 | if (!IS_ELF) |
7ed4a06a TS |
12634 | return; |
12635 | ||
cca86cc8 SC |
12636 | section_name = input_line_pointer; |
12637 | c = get_symbol_end (); | |
a816d1ed AO |
12638 | if (c) |
12639 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 12640 | |
4cf0dd0d TS |
12641 | /* Do we have .section Name<,"flags">? */ |
12642 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 12643 | { |
4cf0dd0d TS |
12644 | /* just after name is now '\0'. */ |
12645 | *input_line_pointer = c; | |
cca86cc8 SC |
12646 | input_line_pointer = section_name; |
12647 | obj_elf_section (ignore); | |
12648 | return; | |
12649 | } | |
12650 | input_line_pointer++; | |
12651 | ||
12652 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
12653 | if (c == ',') | |
12654 | section_type = get_absolute_expression (); | |
12655 | else | |
12656 | section_type = 0; | |
12657 | if (*input_line_pointer++ == ',') | |
12658 | section_flag = get_absolute_expression (); | |
12659 | else | |
12660 | section_flag = 0; | |
12661 | if (*input_line_pointer++ == ',') | |
12662 | section_entry_size = get_absolute_expression (); | |
12663 | else | |
12664 | section_entry_size = 0; | |
12665 | if (*input_line_pointer++ == ',') | |
12666 | section_alignment = get_absolute_expression (); | |
12667 | else | |
12668 | section_alignment = 0; | |
87975d2a AM |
12669 | /* FIXME: really ignore? */ |
12670 | (void) section_alignment; | |
cca86cc8 | 12671 | |
a816d1ed AO |
12672 | section_name = xstrdup (section_name); |
12673 | ||
8ab8a5c8 RS |
12674 | /* When using the generic form of .section (as implemented by obj-elf.c), |
12675 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
12676 | traditionally had to fall back on the more common @progbits instead. | |
12677 | ||
12678 | There's nothing really harmful in this, since bfd will correct | |
12679 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 12680 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
12681 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
12682 | ||
12683 | Even so, we shouldn't force users of the MIPS .section syntax to | |
12684 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
12685 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
12686 | generic type-checking code. */ | |
12687 | if (section_type == SHT_MIPS_DWARF) | |
12688 | section_type = SHT_PROGBITS; | |
12689 | ||
cca86cc8 SC |
12690 | obj_elf_change_section (section_name, section_type, section_flag, |
12691 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
12692 | |
12693 | if (now_seg->name != section_name) | |
12694 | free (section_name); | |
7ed4a06a | 12695 | #endif /* OBJ_ELF */ |
cca86cc8 | 12696 | } |
252b5132 RH |
12697 | |
12698 | void | |
17a2f251 | 12699 | mips_enable_auto_align (void) |
252b5132 RH |
12700 | { |
12701 | auto_align = 1; | |
12702 | } | |
12703 | ||
12704 | static void | |
17a2f251 | 12705 | s_cons (int log_size) |
252b5132 | 12706 | { |
a8dbcb85 TS |
12707 | segment_info_type *si = seg_info (now_seg); |
12708 | struct insn_label_list *l = si->label_list; | |
252b5132 RH |
12709 | symbolS *label; |
12710 | ||
a8dbcb85 | 12711 | label = l != NULL ? l->label : NULL; |
7d10b47d | 12712 | mips_emit_delays (); |
252b5132 RH |
12713 | if (log_size > 0 && auto_align) |
12714 | mips_align (log_size, 0, label); | |
12715 | mips_clear_insn_labels (); | |
12716 | cons (1 << log_size); | |
12717 | } | |
12718 | ||
12719 | static void | |
17a2f251 | 12720 | s_float_cons (int type) |
252b5132 | 12721 | { |
a8dbcb85 TS |
12722 | segment_info_type *si = seg_info (now_seg); |
12723 | struct insn_label_list *l = si->label_list; | |
252b5132 RH |
12724 | symbolS *label; |
12725 | ||
a8dbcb85 | 12726 | label = l != NULL ? l->label : NULL; |
252b5132 | 12727 | |
7d10b47d | 12728 | mips_emit_delays (); |
252b5132 RH |
12729 | |
12730 | if (auto_align) | |
49309057 ILT |
12731 | { |
12732 | if (type == 'd') | |
12733 | mips_align (3, 0, label); | |
12734 | else | |
12735 | mips_align (2, 0, label); | |
12736 | } | |
252b5132 RH |
12737 | |
12738 | mips_clear_insn_labels (); | |
12739 | ||
12740 | float_cons (type); | |
12741 | } | |
12742 | ||
12743 | /* Handle .globl. We need to override it because on Irix 5 you are | |
12744 | permitted to say | |
12745 | .globl foo .text | |
12746 | where foo is an undefined symbol, to mean that foo should be | |
12747 | considered to be the address of a function. */ | |
12748 | ||
12749 | static void | |
17a2f251 | 12750 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12751 | { |
12752 | char *name; | |
12753 | int c; | |
12754 | symbolS *symbolP; | |
12755 | flagword flag; | |
12756 | ||
8a06b769 | 12757 | do |
252b5132 | 12758 | { |
8a06b769 | 12759 | name = input_line_pointer; |
252b5132 | 12760 | c = get_symbol_end (); |
8a06b769 TS |
12761 | symbolP = symbol_find_or_make (name); |
12762 | S_SET_EXTERNAL (symbolP); | |
12763 | ||
252b5132 | 12764 | *input_line_pointer = c; |
8a06b769 | 12765 | SKIP_WHITESPACE (); |
252b5132 | 12766 | |
8a06b769 TS |
12767 | /* On Irix 5, every global symbol that is not explicitly labelled as |
12768 | being a function is apparently labelled as being an object. */ | |
12769 | flag = BSF_OBJECT; | |
252b5132 | 12770 | |
8a06b769 TS |
12771 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
12772 | && (*input_line_pointer != ',')) | |
12773 | { | |
12774 | char *secname; | |
12775 | asection *sec; | |
12776 | ||
12777 | secname = input_line_pointer; | |
12778 | c = get_symbol_end (); | |
12779 | sec = bfd_get_section_by_name (stdoutput, secname); | |
12780 | if (sec == NULL) | |
12781 | as_bad (_("%s: no such section"), secname); | |
12782 | *input_line_pointer = c; | |
12783 | ||
12784 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
12785 | flag = BSF_FUNCTION; | |
12786 | } | |
12787 | ||
12788 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
12789 | ||
12790 | c = *input_line_pointer; | |
12791 | if (c == ',') | |
12792 | { | |
12793 | input_line_pointer++; | |
12794 | SKIP_WHITESPACE (); | |
12795 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
12796 | c = '\n'; | |
12797 | } | |
12798 | } | |
12799 | while (c == ','); | |
252b5132 | 12800 | |
252b5132 RH |
12801 | demand_empty_rest_of_line (); |
12802 | } | |
12803 | ||
12804 | static void | |
17a2f251 | 12805 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12806 | { |
12807 | char *opt; | |
12808 | char c; | |
12809 | ||
12810 | opt = input_line_pointer; | |
12811 | c = get_symbol_end (); | |
12812 | ||
12813 | if (*opt == 'O') | |
12814 | { | |
12815 | /* FIXME: What does this mean? */ | |
12816 | } | |
12817 | else if (strncmp (opt, "pic", 3) == 0) | |
12818 | { | |
12819 | int i; | |
12820 | ||
12821 | i = atoi (opt + 3); | |
12822 | if (i == 0) | |
12823 | mips_pic = NO_PIC; | |
12824 | else if (i == 2) | |
143d77c5 | 12825 | { |
252b5132 | 12826 | mips_pic = SVR4_PIC; |
143d77c5 EC |
12827 | mips_abicalls = TRUE; |
12828 | } | |
252b5132 RH |
12829 | else |
12830 | as_bad (_(".option pic%d not supported"), i); | |
12831 | ||
4d0d148d | 12832 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
12833 | { |
12834 | if (g_switch_seen && g_switch_value != 0) | |
12835 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
12836 | g_switch_value = 0; | |
12837 | bfd_set_gp_size (stdoutput, 0); | |
12838 | } | |
12839 | } | |
12840 | else | |
12841 | as_warn (_("Unrecognized option \"%s\""), opt); | |
12842 | ||
12843 | *input_line_pointer = c; | |
12844 | demand_empty_rest_of_line (); | |
12845 | } | |
12846 | ||
12847 | /* This structure is used to hold a stack of .set values. */ | |
12848 | ||
e972090a NC |
12849 | struct mips_option_stack |
12850 | { | |
252b5132 RH |
12851 | struct mips_option_stack *next; |
12852 | struct mips_set_options options; | |
12853 | }; | |
12854 | ||
12855 | static struct mips_option_stack *mips_opts_stack; | |
12856 | ||
12857 | /* Handle the .set pseudo-op. */ | |
12858 | ||
12859 | static void | |
17a2f251 | 12860 | s_mipsset (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12861 | { |
12862 | char *name = input_line_pointer, ch; | |
12863 | ||
12864 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 12865 | ++input_line_pointer; |
252b5132 RH |
12866 | ch = *input_line_pointer; |
12867 | *input_line_pointer = '\0'; | |
12868 | ||
12869 | if (strcmp (name, "reorder") == 0) | |
12870 | { | |
7d10b47d RS |
12871 | if (mips_opts.noreorder) |
12872 | end_noreorder (); | |
252b5132 RH |
12873 | } |
12874 | else if (strcmp (name, "noreorder") == 0) | |
12875 | { | |
7d10b47d RS |
12876 | if (!mips_opts.noreorder) |
12877 | start_noreorder (); | |
252b5132 | 12878 | } |
741fe287 MR |
12879 | else if (strncmp (name, "at=", 3) == 0) |
12880 | { | |
12881 | char *s = name + 3; | |
12882 | ||
12883 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, &mips_opts.at)) | |
12884 | as_bad (_("Unrecognized register name `%s'"), s); | |
12885 | } | |
252b5132 RH |
12886 | else if (strcmp (name, "at") == 0) |
12887 | { | |
741fe287 | 12888 | mips_opts.at = ATREG; |
252b5132 RH |
12889 | } |
12890 | else if (strcmp (name, "noat") == 0) | |
12891 | { | |
741fe287 | 12892 | mips_opts.at = ZERO; |
252b5132 RH |
12893 | } |
12894 | else if (strcmp (name, "macro") == 0) | |
12895 | { | |
12896 | mips_opts.warn_about_macros = 0; | |
12897 | } | |
12898 | else if (strcmp (name, "nomacro") == 0) | |
12899 | { | |
12900 | if (mips_opts.noreorder == 0) | |
12901 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
12902 | mips_opts.warn_about_macros = 1; | |
12903 | } | |
12904 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
12905 | { | |
12906 | mips_opts.nomove = 0; | |
12907 | } | |
12908 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
12909 | { | |
12910 | mips_opts.nomove = 1; | |
12911 | } | |
12912 | else if (strcmp (name, "bopt") == 0) | |
12913 | { | |
12914 | mips_opts.nobopt = 0; | |
12915 | } | |
12916 | else if (strcmp (name, "nobopt") == 0) | |
12917 | { | |
12918 | mips_opts.nobopt = 1; | |
12919 | } | |
ad3fea08 TS |
12920 | else if (strcmp (name, "gp=default") == 0) |
12921 | mips_opts.gp32 = file_mips_gp32; | |
12922 | else if (strcmp (name, "gp=32") == 0) | |
12923 | mips_opts.gp32 = 1; | |
12924 | else if (strcmp (name, "gp=64") == 0) | |
12925 | { | |
12926 | if (!ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
20203fb9 | 12927 | as_warn (_("%s isa does not support 64-bit registers"), |
ad3fea08 TS |
12928 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
12929 | mips_opts.gp32 = 0; | |
12930 | } | |
12931 | else if (strcmp (name, "fp=default") == 0) | |
12932 | mips_opts.fp32 = file_mips_fp32; | |
12933 | else if (strcmp (name, "fp=32") == 0) | |
12934 | mips_opts.fp32 = 1; | |
12935 | else if (strcmp (name, "fp=64") == 0) | |
12936 | { | |
12937 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
20203fb9 | 12938 | as_warn (_("%s isa does not support 64-bit floating point registers"), |
ad3fea08 TS |
12939 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
12940 | mips_opts.fp32 = 0; | |
12941 | } | |
037b32b9 AN |
12942 | else if (strcmp (name, "softfloat") == 0) |
12943 | mips_opts.soft_float = 1; | |
12944 | else if (strcmp (name, "hardfloat") == 0) | |
12945 | mips_opts.soft_float = 0; | |
12946 | else if (strcmp (name, "singlefloat") == 0) | |
12947 | mips_opts.single_float = 1; | |
12948 | else if (strcmp (name, "doublefloat") == 0) | |
12949 | mips_opts.single_float = 0; | |
252b5132 RH |
12950 | else if (strcmp (name, "mips16") == 0 |
12951 | || strcmp (name, "MIPS-16") == 0) | |
12952 | mips_opts.mips16 = 1; | |
12953 | else if (strcmp (name, "nomips16") == 0 | |
12954 | || strcmp (name, "noMIPS-16") == 0) | |
12955 | mips_opts.mips16 = 0; | |
e16bfa71 TS |
12956 | else if (strcmp (name, "smartmips") == 0) |
12957 | { | |
ad3fea08 | 12958 | if (!ISA_SUPPORTS_SMARTMIPS) |
20203fb9 | 12959 | as_warn (_("%s ISA does not support SmartMIPS ASE"), |
e16bfa71 TS |
12960 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
12961 | mips_opts.ase_smartmips = 1; | |
12962 | } | |
12963 | else if (strcmp (name, "nosmartmips") == 0) | |
12964 | mips_opts.ase_smartmips = 0; | |
1f25f5d3 CD |
12965 | else if (strcmp (name, "mips3d") == 0) |
12966 | mips_opts.ase_mips3d = 1; | |
12967 | else if (strcmp (name, "nomips3d") == 0) | |
12968 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
12969 | else if (strcmp (name, "mdmx") == 0) |
12970 | mips_opts.ase_mdmx = 1; | |
12971 | else if (strcmp (name, "nomdmx") == 0) | |
12972 | mips_opts.ase_mdmx = 0; | |
74cd071d | 12973 | else if (strcmp (name, "dsp") == 0) |
ad3fea08 TS |
12974 | { |
12975 | if (!ISA_SUPPORTS_DSP_ASE) | |
20203fb9 | 12976 | as_warn (_("%s ISA does not support DSP ASE"), |
ad3fea08 TS |
12977 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
12978 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 12979 | mips_opts.ase_dspr2 = 0; |
ad3fea08 | 12980 | } |
74cd071d | 12981 | else if (strcmp (name, "nodsp") == 0) |
8b082fb1 TS |
12982 | { |
12983 | mips_opts.ase_dsp = 0; | |
12984 | mips_opts.ase_dspr2 = 0; | |
12985 | } | |
12986 | else if (strcmp (name, "dspr2") == 0) | |
12987 | { | |
12988 | if (!ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 | 12989 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
8b082fb1 TS |
12990 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
12991 | mips_opts.ase_dspr2 = 1; | |
12992 | mips_opts.ase_dsp = 1; | |
12993 | } | |
12994 | else if (strcmp (name, "nodspr2") == 0) | |
12995 | { | |
12996 | mips_opts.ase_dspr2 = 0; | |
12997 | mips_opts.ase_dsp = 0; | |
12998 | } | |
ef2e4d86 | 12999 | else if (strcmp (name, "mt") == 0) |
ad3fea08 TS |
13000 | { |
13001 | if (!ISA_SUPPORTS_MT_ASE) | |
20203fb9 | 13002 | as_warn (_("%s ISA does not support MT ASE"), |
ad3fea08 TS |
13003 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
13004 | mips_opts.ase_mt = 1; | |
13005 | } | |
ef2e4d86 CF |
13006 | else if (strcmp (name, "nomt") == 0) |
13007 | mips_opts.ase_mt = 0; | |
1a2c1fad | 13008 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 13009 | { |
af7ee8bf | 13010 | int reset = 0; |
252b5132 | 13011 | |
1a2c1fad CD |
13012 | /* Permit the user to change the ISA and architecture on the fly. |
13013 | Needless to say, misuse can cause serious problems. */ | |
81a21e38 | 13014 | if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) |
af7ee8bf CD |
13015 | { |
13016 | reset = 1; | |
13017 | mips_opts.isa = file_mips_isa; | |
1a2c1fad | 13018 | mips_opts.arch = file_mips_arch; |
1a2c1fad CD |
13019 | } |
13020 | else if (strncmp (name, "arch=", 5) == 0) | |
13021 | { | |
13022 | const struct mips_cpu_info *p; | |
13023 | ||
13024 | p = mips_parse_cpu("internal use", name + 5); | |
13025 | if (!p) | |
13026 | as_bad (_("unknown architecture %s"), name + 5); | |
13027 | else | |
13028 | { | |
13029 | mips_opts.arch = p->cpu; | |
13030 | mips_opts.isa = p->isa; | |
13031 | } | |
13032 | } | |
81a21e38 TS |
13033 | else if (strncmp (name, "mips", 4) == 0) |
13034 | { | |
13035 | const struct mips_cpu_info *p; | |
13036 | ||
13037 | p = mips_parse_cpu("internal use", name); | |
13038 | if (!p) | |
13039 | as_bad (_("unknown ISA level %s"), name + 4); | |
13040 | else | |
13041 | { | |
13042 | mips_opts.arch = p->cpu; | |
13043 | mips_opts.isa = p->isa; | |
13044 | } | |
13045 | } | |
af7ee8bf | 13046 | else |
81a21e38 | 13047 | as_bad (_("unknown ISA or architecture %s"), name); |
af7ee8bf CD |
13048 | |
13049 | switch (mips_opts.isa) | |
98d3f06f KH |
13050 | { |
13051 | case 0: | |
98d3f06f | 13052 | break; |
af7ee8bf CD |
13053 | case ISA_MIPS1: |
13054 | case ISA_MIPS2: | |
13055 | case ISA_MIPS32: | |
13056 | case ISA_MIPS32R2: | |
98d3f06f KH |
13057 | mips_opts.gp32 = 1; |
13058 | mips_opts.fp32 = 1; | |
13059 | break; | |
af7ee8bf CD |
13060 | case ISA_MIPS3: |
13061 | case ISA_MIPS4: | |
13062 | case ISA_MIPS5: | |
13063 | case ISA_MIPS64: | |
5f74bc13 | 13064 | case ISA_MIPS64R2: |
98d3f06f KH |
13065 | mips_opts.gp32 = 0; |
13066 | mips_opts.fp32 = 0; | |
13067 | break; | |
13068 | default: | |
13069 | as_bad (_("unknown ISA level %s"), name + 4); | |
13070 | break; | |
13071 | } | |
af7ee8bf | 13072 | if (reset) |
98d3f06f | 13073 | { |
af7ee8bf CD |
13074 | mips_opts.gp32 = file_mips_gp32; |
13075 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 13076 | } |
252b5132 RH |
13077 | } |
13078 | else if (strcmp (name, "autoextend") == 0) | |
13079 | mips_opts.noautoextend = 0; | |
13080 | else if (strcmp (name, "noautoextend") == 0) | |
13081 | mips_opts.noautoextend = 1; | |
13082 | else if (strcmp (name, "push") == 0) | |
13083 | { | |
13084 | struct mips_option_stack *s; | |
13085 | ||
13086 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
13087 | s->next = mips_opts_stack; | |
13088 | s->options = mips_opts; | |
13089 | mips_opts_stack = s; | |
13090 | } | |
13091 | else if (strcmp (name, "pop") == 0) | |
13092 | { | |
13093 | struct mips_option_stack *s; | |
13094 | ||
13095 | s = mips_opts_stack; | |
13096 | if (s == NULL) | |
13097 | as_bad (_(".set pop with no .set push")); | |
13098 | else | |
13099 | { | |
13100 | /* If we're changing the reorder mode we need to handle | |
13101 | delay slots correctly. */ | |
13102 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 13103 | start_noreorder (); |
252b5132 | 13104 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 13105 | end_noreorder (); |
252b5132 RH |
13106 | |
13107 | mips_opts = s->options; | |
13108 | mips_opts_stack = s->next; | |
13109 | free (s); | |
13110 | } | |
13111 | } | |
aed1a261 RS |
13112 | else if (strcmp (name, "sym32") == 0) |
13113 | mips_opts.sym32 = TRUE; | |
13114 | else if (strcmp (name, "nosym32") == 0) | |
13115 | mips_opts.sym32 = FALSE; | |
e6559e01 JM |
13116 | else if (strchr (name, ',')) |
13117 | { | |
13118 | /* Generic ".set" directive; use the generic handler. */ | |
13119 | *input_line_pointer = ch; | |
13120 | input_line_pointer = name; | |
13121 | s_set (0); | |
13122 | return; | |
13123 | } | |
252b5132 RH |
13124 | else |
13125 | { | |
13126 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
13127 | } | |
13128 | *input_line_pointer = ch; | |
13129 | demand_empty_rest_of_line (); | |
13130 | } | |
13131 | ||
13132 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
13133 | .option pic2. It means to generate SVR4 PIC calls. */ | |
13134 | ||
13135 | static void | |
17a2f251 | 13136 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
13137 | { |
13138 | mips_pic = SVR4_PIC; | |
143d77c5 | 13139 | mips_abicalls = TRUE; |
4d0d148d TS |
13140 | |
13141 | if (g_switch_seen && g_switch_value != 0) | |
13142 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
13143 | g_switch_value = 0; | |
13144 | ||
252b5132 RH |
13145 | bfd_set_gp_size (stdoutput, 0); |
13146 | demand_empty_rest_of_line (); | |
13147 | } | |
13148 | ||
13149 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
13150 | PIC code. It sets the $gp register for the function based on the | |
13151 | function address, which is in the register named in the argument. | |
13152 | This uses a relocation against _gp_disp, which is handled specially | |
13153 | by the linker. The result is: | |
13154 | lui $gp,%hi(_gp_disp) | |
13155 | addiu $gp,$gp,%lo(_gp_disp) | |
13156 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
13157 | The .cpload argument is normally $25 == $t9. |
13158 | ||
13159 | The -mno-shared option changes this to: | |
bbe506e8 TS |
13160 | lui $gp,%hi(__gnu_local_gp) |
13161 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
13162 | and the argument is ignored. This saves an instruction, but the |
13163 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
13164 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
13165 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
13166 | |
13167 | static void | |
17a2f251 | 13168 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
13169 | { |
13170 | expressionS ex; | |
aa6975fb ILT |
13171 | int reg; |
13172 | int in_shared; | |
252b5132 | 13173 | |
6478892d TS |
13174 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
13175 | .cpload is ignored. */ | |
13176 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
13177 | { |
13178 | s_ignore (0); | |
13179 | return; | |
13180 | } | |
13181 | ||
d3ecfc59 | 13182 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
13183 | if (mips_opts.noreorder == 0) |
13184 | as_warn (_(".cpload not in noreorder section")); | |
13185 | ||
aa6975fb ILT |
13186 | reg = tc_get_register (0); |
13187 | ||
13188 | /* If we need to produce a 64-bit address, we are better off using | |
13189 | the default instruction sequence. */ | |
aed1a261 | 13190 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 13191 | |
252b5132 | 13192 | ex.X_op = O_symbol; |
bbe506e8 TS |
13193 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
13194 | "__gnu_local_gp"); | |
252b5132 RH |
13195 | ex.X_op_symbol = NULL; |
13196 | ex.X_add_number = 0; | |
13197 | ||
13198 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 13199 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 13200 | |
584892a6 | 13201 | macro_start (); |
67c0d1eb RS |
13202 | macro_build_lui (&ex, mips_gp_register); |
13203 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 13204 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
13205 | if (in_shared) |
13206 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
13207 | mips_gp_register, reg); | |
584892a6 | 13208 | macro_end (); |
252b5132 RH |
13209 | |
13210 | demand_empty_rest_of_line (); | |
13211 | } | |
13212 | ||
6478892d TS |
13213 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
13214 | .cpsetup $reg1, offset|$reg2, label | |
13215 | ||
13216 | If offset is given, this results in: | |
13217 | sd $gp, offset($sp) | |
956cd1d6 | 13218 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
13219 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
13220 | daddu $gp, $gp, $reg1 | |
6478892d TS |
13221 | |
13222 | If $reg2 is given, this results in: | |
13223 | daddu $reg2, $gp, $0 | |
956cd1d6 | 13224 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
13225 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
13226 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
13227 | $reg1 is normally $25 == $t9. |
13228 | ||
13229 | The -mno-shared option replaces the last three instructions with | |
13230 | lui $gp,%hi(_gp) | |
54f4ddb3 | 13231 | addiu $gp,$gp,%lo(_gp) */ |
aa6975fb | 13232 | |
6478892d | 13233 | static void |
17a2f251 | 13234 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13235 | { |
13236 | expressionS ex_off; | |
13237 | expressionS ex_sym; | |
13238 | int reg1; | |
6478892d | 13239 | |
8586fc66 | 13240 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
13241 | We also need NewABI support. */ |
13242 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
13243 | { | |
13244 | s_ignore (0); | |
13245 | return; | |
13246 | } | |
13247 | ||
13248 | reg1 = tc_get_register (0); | |
13249 | SKIP_WHITESPACE (); | |
13250 | if (*input_line_pointer != ',') | |
13251 | { | |
13252 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
13253 | return; | |
13254 | } | |
13255 | else | |
80245285 | 13256 | ++input_line_pointer; |
6478892d TS |
13257 | SKIP_WHITESPACE (); |
13258 | if (*input_line_pointer == '$') | |
80245285 TS |
13259 | { |
13260 | mips_cpreturn_register = tc_get_register (0); | |
13261 | mips_cpreturn_offset = -1; | |
13262 | } | |
6478892d | 13263 | else |
80245285 TS |
13264 | { |
13265 | mips_cpreturn_offset = get_absolute_expression (); | |
13266 | mips_cpreturn_register = -1; | |
13267 | } | |
6478892d TS |
13268 | SKIP_WHITESPACE (); |
13269 | if (*input_line_pointer != ',') | |
13270 | { | |
13271 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
13272 | return; | |
13273 | } | |
13274 | else | |
f9419b05 | 13275 | ++input_line_pointer; |
6478892d | 13276 | SKIP_WHITESPACE (); |
f21f8242 | 13277 | expression (&ex_sym); |
6478892d | 13278 | |
584892a6 | 13279 | macro_start (); |
6478892d TS |
13280 | if (mips_cpreturn_register == -1) |
13281 | { | |
13282 | ex_off.X_op = O_constant; | |
13283 | ex_off.X_add_symbol = NULL; | |
13284 | ex_off.X_op_symbol = NULL; | |
13285 | ex_off.X_add_number = mips_cpreturn_offset; | |
13286 | ||
67c0d1eb | 13287 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 13288 | BFD_RELOC_LO16, SP); |
6478892d TS |
13289 | } |
13290 | else | |
67c0d1eb | 13291 | macro_build (NULL, "daddu", "d,v,t", mips_cpreturn_register, |
17a2f251 | 13292 | mips_gp_register, 0); |
6478892d | 13293 | |
aed1a261 | 13294 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb ILT |
13295 | { |
13296 | macro_build (&ex_sym, "lui", "t,u", mips_gp_register, | |
13297 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, | |
13298 | BFD_RELOC_HI16_S); | |
13299 | ||
13300 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
13301 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
13302 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
13303 | ||
13304 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
13305 | mips_gp_register, reg1); | |
13306 | } | |
13307 | else | |
13308 | { | |
13309 | expressionS ex; | |
13310 | ||
13311 | ex.X_op = O_symbol; | |
4184909a | 13312 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
13313 | ex.X_op_symbol = NULL; |
13314 | ex.X_add_number = 0; | |
6e1304d8 | 13315 | |
aa6975fb ILT |
13316 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
13317 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
13318 | ||
13319 | macro_build_lui (&ex, mips_gp_register); | |
13320 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
13321 | mips_gp_register, BFD_RELOC_LO16); | |
13322 | } | |
f21f8242 | 13323 | |
584892a6 | 13324 | macro_end (); |
6478892d TS |
13325 | |
13326 | demand_empty_rest_of_line (); | |
13327 | } | |
13328 | ||
13329 | static void | |
17a2f251 | 13330 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13331 | { |
13332 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
54f4ddb3 | 13333 | .cplocal is ignored. */ |
6478892d TS |
13334 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) |
13335 | { | |
13336 | s_ignore (0); | |
13337 | return; | |
13338 | } | |
13339 | ||
13340 | mips_gp_register = tc_get_register (0); | |
85b51719 | 13341 | demand_empty_rest_of_line (); |
6478892d TS |
13342 | } |
13343 | ||
252b5132 RH |
13344 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
13345 | offset from $sp. The offset is remembered, and after making a PIC | |
13346 | call $gp is restored from that location. */ | |
13347 | ||
13348 | static void | |
17a2f251 | 13349 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
13350 | { |
13351 | expressionS ex; | |
252b5132 | 13352 | |
6478892d | 13353 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 13354 | .cprestore is ignored. */ |
6478892d | 13355 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
13356 | { |
13357 | s_ignore (0); | |
13358 | return; | |
13359 | } | |
13360 | ||
13361 | mips_cprestore_offset = get_absolute_expression (); | |
7a621144 | 13362 | mips_cprestore_valid = 1; |
252b5132 RH |
13363 | |
13364 | ex.X_op = O_constant; | |
13365 | ex.X_add_symbol = NULL; | |
13366 | ex.X_op_symbol = NULL; | |
13367 | ex.X_add_number = mips_cprestore_offset; | |
13368 | ||
584892a6 | 13369 | macro_start (); |
67c0d1eb RS |
13370 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
13371 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 13372 | macro_end (); |
252b5132 RH |
13373 | |
13374 | demand_empty_rest_of_line (); | |
13375 | } | |
13376 | ||
6478892d | 13377 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 13378 | was given in the preceding .cpsetup, it results in: |
6478892d | 13379 | ld $gp, offset($sp) |
76b3015f | 13380 | |
6478892d | 13381 | If a register $reg2 was given there, it results in: |
54f4ddb3 TS |
13382 | daddu $gp, $reg2, $0 */ |
13383 | ||
6478892d | 13384 | static void |
17a2f251 | 13385 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13386 | { |
13387 | expressionS ex; | |
6478892d TS |
13388 | |
13389 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
13390 | We also need NewABI support. */ | |
13391 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
13392 | { | |
13393 | s_ignore (0); | |
13394 | return; | |
13395 | } | |
13396 | ||
584892a6 | 13397 | macro_start (); |
6478892d TS |
13398 | if (mips_cpreturn_register == -1) |
13399 | { | |
13400 | ex.X_op = O_constant; | |
13401 | ex.X_add_symbol = NULL; | |
13402 | ex.X_op_symbol = NULL; | |
13403 | ex.X_add_number = mips_cpreturn_offset; | |
13404 | ||
67c0d1eb | 13405 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
13406 | } |
13407 | else | |
67c0d1eb | 13408 | macro_build (NULL, "daddu", "d,v,t", mips_gp_register, |
17a2f251 | 13409 | mips_cpreturn_register, 0); |
584892a6 | 13410 | macro_end (); |
6478892d TS |
13411 | |
13412 | demand_empty_rest_of_line (); | |
13413 | } | |
13414 | ||
741d6ea8 JM |
13415 | /* Handle the .dtprelword and .dtpreldword pseudo-ops. They generate |
13416 | a 32-bit or 64-bit DTP-relative relocation (BYTES says which) for | |
13417 | use in DWARF debug information. */ | |
13418 | ||
13419 | static void | |
13420 | s_dtprel_internal (size_t bytes) | |
13421 | { | |
13422 | expressionS ex; | |
13423 | char *p; | |
13424 | ||
13425 | expression (&ex); | |
13426 | ||
13427 | if (ex.X_op != O_symbol) | |
13428 | { | |
13429 | as_bad (_("Unsupported use of %s"), (bytes == 8 | |
13430 | ? ".dtpreldword" | |
13431 | : ".dtprelword")); | |
13432 | ignore_rest_of_line (); | |
13433 | } | |
13434 | ||
13435 | p = frag_more (bytes); | |
13436 | md_number_to_chars (p, 0, bytes); | |
13437 | fix_new_exp (frag_now, p - frag_now->fr_literal, bytes, &ex, FALSE, | |
13438 | (bytes == 8 | |
13439 | ? BFD_RELOC_MIPS_TLS_DTPREL64 | |
13440 | : BFD_RELOC_MIPS_TLS_DTPREL32)); | |
13441 | ||
13442 | demand_empty_rest_of_line (); | |
13443 | } | |
13444 | ||
13445 | /* Handle .dtprelword. */ | |
13446 | ||
13447 | static void | |
13448 | s_dtprelword (int ignore ATTRIBUTE_UNUSED) | |
13449 | { | |
13450 | s_dtprel_internal (4); | |
13451 | } | |
13452 | ||
13453 | /* Handle .dtpreldword. */ | |
13454 | ||
13455 | static void | |
13456 | s_dtpreldword (int ignore ATTRIBUTE_UNUSED) | |
13457 | { | |
13458 | s_dtprel_internal (8); | |
13459 | } | |
13460 | ||
6478892d TS |
13461 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC |
13462 | code. It sets the offset to use in gp_rel relocations. */ | |
13463 | ||
13464 | static void | |
17a2f251 | 13465 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13466 | { |
13467 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
13468 | We also need NewABI support. */ | |
13469 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
13470 | { | |
13471 | s_ignore (0); | |
13472 | return; | |
13473 | } | |
13474 | ||
def2e0dd | 13475 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
13476 | |
13477 | demand_empty_rest_of_line (); | |
13478 | } | |
13479 | ||
252b5132 RH |
13480 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
13481 | code. It generates a 32 bit GP relative reloc. */ | |
13482 | ||
13483 | static void | |
17a2f251 | 13484 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 13485 | { |
a8dbcb85 TS |
13486 | segment_info_type *si; |
13487 | struct insn_label_list *l; | |
252b5132 RH |
13488 | symbolS *label; |
13489 | expressionS ex; | |
13490 | char *p; | |
13491 | ||
13492 | /* When not generating PIC code, this is treated as .word. */ | |
13493 | if (mips_pic != SVR4_PIC) | |
13494 | { | |
13495 | s_cons (2); | |
13496 | return; | |
13497 | } | |
13498 | ||
a8dbcb85 TS |
13499 | si = seg_info (now_seg); |
13500 | l = si->label_list; | |
13501 | label = l != NULL ? l->label : NULL; | |
7d10b47d | 13502 | mips_emit_delays (); |
252b5132 RH |
13503 | if (auto_align) |
13504 | mips_align (2, 0, label); | |
13505 | mips_clear_insn_labels (); | |
13506 | ||
13507 | expression (&ex); | |
13508 | ||
13509 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
13510 | { | |
13511 | as_bad (_("Unsupported use of .gpword")); | |
13512 | ignore_rest_of_line (); | |
13513 | } | |
13514 | ||
13515 | p = frag_more (4); | |
17a2f251 | 13516 | md_number_to_chars (p, 0, 4); |
b34976b6 | 13517 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 13518 | BFD_RELOC_GPREL32); |
252b5132 RH |
13519 | |
13520 | demand_empty_rest_of_line (); | |
13521 | } | |
13522 | ||
10181a0d | 13523 | static void |
17a2f251 | 13524 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d | 13525 | { |
a8dbcb85 TS |
13526 | segment_info_type *si; |
13527 | struct insn_label_list *l; | |
10181a0d AO |
13528 | symbolS *label; |
13529 | expressionS ex; | |
13530 | char *p; | |
13531 | ||
13532 | /* When not generating PIC code, this is treated as .dword. */ | |
13533 | if (mips_pic != SVR4_PIC) | |
13534 | { | |
13535 | s_cons (3); | |
13536 | return; | |
13537 | } | |
13538 | ||
a8dbcb85 TS |
13539 | si = seg_info (now_seg); |
13540 | l = si->label_list; | |
13541 | label = l != NULL ? l->label : NULL; | |
7d10b47d | 13542 | mips_emit_delays (); |
10181a0d AO |
13543 | if (auto_align) |
13544 | mips_align (3, 0, label); | |
13545 | mips_clear_insn_labels (); | |
13546 | ||
13547 | expression (&ex); | |
13548 | ||
13549 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
13550 | { | |
13551 | as_bad (_("Unsupported use of .gpdword")); | |
13552 | ignore_rest_of_line (); | |
13553 | } | |
13554 | ||
13555 | p = frag_more (8); | |
17a2f251 | 13556 | md_number_to_chars (p, 0, 8); |
a105a300 | 13557 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 13558 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
13559 | |
13560 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
13561 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
13562 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
13563 | |
13564 | demand_empty_rest_of_line (); | |
13565 | } | |
13566 | ||
252b5132 RH |
13567 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
13568 | tables in SVR4 PIC code. */ | |
13569 | ||
13570 | static void | |
17a2f251 | 13571 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 13572 | { |
252b5132 RH |
13573 | int reg; |
13574 | ||
10181a0d AO |
13575 | /* This is ignored when not generating SVR4 PIC code. */ |
13576 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
13577 | { |
13578 | s_ignore (0); | |
13579 | return; | |
13580 | } | |
13581 | ||
13582 | /* Add $gp to the register named as an argument. */ | |
584892a6 | 13583 | macro_start (); |
252b5132 | 13584 | reg = tc_get_register (0); |
67c0d1eb | 13585 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 13586 | macro_end (); |
252b5132 | 13587 | |
bdaaa2e1 | 13588 | demand_empty_rest_of_line (); |
252b5132 RH |
13589 | } |
13590 | ||
13591 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
13592 | mips16 mode. This permits the linker to handle them specially, | |
13593 | such as generating jalx instructions when needed. We also make | |
13594 | them odd for the duration of the assembly, in order to generate the | |
13595 | right sort of code. We will make them even in the adjust_symtab | |
13596 | routine, while leaving them marked. This is convenient for the | |
13597 | debugger and the disassembler. The linker knows to make them odd | |
13598 | again. */ | |
13599 | ||
13600 | static void | |
17a2f251 | 13601 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 13602 | { |
f9419b05 | 13603 | mips16_mark_labels (); |
252b5132 RH |
13604 | |
13605 | demand_empty_rest_of_line (); | |
13606 | } | |
13607 | ||
13608 | /* Handle a .stabn directive. We need these in order to mark a label | |
13609 | as being a mips16 text label correctly. Sometimes the compiler | |
13610 | will emit a label, followed by a .stabn, and then switch sections. | |
13611 | If the label and .stabn are in mips16 mode, then the label is | |
13612 | really a mips16 text label. */ | |
13613 | ||
13614 | static void | |
17a2f251 | 13615 | s_mips_stab (int type) |
252b5132 | 13616 | { |
f9419b05 | 13617 | if (type == 'n') |
252b5132 RH |
13618 | mips16_mark_labels (); |
13619 | ||
13620 | s_stab (type); | |
13621 | } | |
13622 | ||
54f4ddb3 | 13623 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
252b5132 RH |
13624 | |
13625 | static void | |
17a2f251 | 13626 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
13627 | { |
13628 | char *name; | |
13629 | int c; | |
13630 | symbolS *symbolP; | |
13631 | expressionS exp; | |
13632 | ||
13633 | name = input_line_pointer; | |
13634 | c = get_symbol_end (); | |
13635 | symbolP = symbol_find_or_make (name); | |
13636 | S_SET_WEAK (symbolP); | |
13637 | *input_line_pointer = c; | |
13638 | ||
13639 | SKIP_WHITESPACE (); | |
13640 | ||
13641 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
13642 | { | |
13643 | if (S_IS_DEFINED (symbolP)) | |
13644 | { | |
20203fb9 | 13645 | as_bad (_("ignoring attempt to redefine symbol %s"), |
252b5132 RH |
13646 | S_GET_NAME (symbolP)); |
13647 | ignore_rest_of_line (); | |
13648 | return; | |
13649 | } | |
bdaaa2e1 | 13650 | |
252b5132 RH |
13651 | if (*input_line_pointer == ',') |
13652 | { | |
13653 | ++input_line_pointer; | |
13654 | SKIP_WHITESPACE (); | |
13655 | } | |
bdaaa2e1 | 13656 | |
252b5132 RH |
13657 | expression (&exp); |
13658 | if (exp.X_op != O_symbol) | |
13659 | { | |
20203fb9 | 13660 | as_bad (_("bad .weakext directive")); |
98d3f06f | 13661 | ignore_rest_of_line (); |
252b5132 RH |
13662 | return; |
13663 | } | |
49309057 | 13664 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
13665 | } |
13666 | ||
13667 | demand_empty_rest_of_line (); | |
13668 | } | |
13669 | ||
13670 | /* Parse a register string into a number. Called from the ECOFF code | |
13671 | to parse .frame. The argument is non-zero if this is the frame | |
13672 | register, so that we can record it in mips_frame_reg. */ | |
13673 | ||
13674 | int | |
17a2f251 | 13675 | tc_get_register (int frame) |
252b5132 | 13676 | { |
707bfff6 | 13677 | unsigned int reg; |
252b5132 RH |
13678 | |
13679 | SKIP_WHITESPACE (); | |
707bfff6 TS |
13680 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
13681 | reg = 0; | |
252b5132 | 13682 | if (frame) |
7a621144 DJ |
13683 | { |
13684 | mips_frame_reg = reg != 0 ? reg : SP; | |
13685 | mips_frame_reg_valid = 1; | |
13686 | mips_cprestore_valid = 0; | |
13687 | } | |
252b5132 RH |
13688 | return reg; |
13689 | } | |
13690 | ||
13691 | valueT | |
17a2f251 | 13692 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
13693 | { |
13694 | int align = bfd_get_section_alignment (stdoutput, seg); | |
13695 | ||
b4c71f56 TS |
13696 | if (IS_ELF) |
13697 | { | |
13698 | /* We don't need to align ELF sections to the full alignment. | |
13699 | However, Irix 5 may prefer that we align them at least to a 16 | |
13700 | byte boundary. We don't bother to align the sections if we | |
13701 | are targeted for an embedded system. */ | |
c41e87e3 | 13702 | if (strncmp (TARGET_OS, "elf", 3) == 0) |
b4c71f56 TS |
13703 | return addr; |
13704 | if (align > 4) | |
13705 | align = 4; | |
13706 | } | |
252b5132 RH |
13707 | |
13708 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
13709 | } | |
13710 | ||
13711 | /* Utility routine, called from above as well. If called while the | |
13712 | input file is still being read, it's only an approximation. (For | |
13713 | example, a symbol may later become defined which appeared to be | |
13714 | undefined earlier.) */ | |
13715 | ||
13716 | static int | |
17a2f251 | 13717 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
13718 | { |
13719 | if (sym == 0) | |
13720 | return 0; | |
13721 | ||
4d0d148d | 13722 | if (g_switch_value > 0) |
252b5132 RH |
13723 | { |
13724 | const char *symname; | |
13725 | int change; | |
13726 | ||
c9914766 | 13727 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
13728 | register. It can be if it is smaller than the -G size or if |
13729 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 13730 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
13731 | they can. */ |
13732 | symname = S_GET_NAME (sym); | |
13733 | if (symname != (const char *) NULL | |
13734 | && (strcmp (symname, "eprol") == 0 | |
13735 | || strcmp (symname, "etext") == 0 | |
13736 | || strcmp (symname, "_gp") == 0 | |
13737 | || strcmp (symname, "edata") == 0 | |
13738 | || strcmp (symname, "_fbss") == 0 | |
13739 | || strcmp (symname, "_fdata") == 0 | |
13740 | || strcmp (symname, "_ftext") == 0 | |
13741 | || strcmp (symname, "end") == 0 | |
13742 | || strcmp (symname, "_gp_disp") == 0)) | |
13743 | change = 1; | |
13744 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
13745 | && (0 | |
13746 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
13747 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
13748 | && (symbol_get_obj (sym)->ecoff_extern_size | |
13749 | <= g_switch_value)) | |
252b5132 RH |
13750 | #endif |
13751 | /* We must defer this decision until after the whole | |
13752 | file has been read, since there might be a .extern | |
13753 | after the first use of this symbol. */ | |
13754 | || (before_relaxing | |
13755 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 13756 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
13757 | #endif |
13758 | && S_GET_VALUE (sym) == 0) | |
13759 | || (S_GET_VALUE (sym) != 0 | |
13760 | && S_GET_VALUE (sym) <= g_switch_value))) | |
13761 | change = 0; | |
13762 | else | |
13763 | { | |
13764 | const char *segname; | |
13765 | ||
13766 | segname = segment_name (S_GET_SEGMENT (sym)); | |
9c2799c2 | 13767 | gas_assert (strcmp (segname, ".lit8") != 0 |
252b5132 RH |
13768 | && strcmp (segname, ".lit4") != 0); |
13769 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
13770 | && strcmp (segname, ".sbss") != 0 |
13771 | && strncmp (segname, ".sdata.", 7) != 0 | |
d4dc2f22 TS |
13772 | && strncmp (segname, ".sbss.", 6) != 0 |
13773 | && strncmp (segname, ".gnu.linkonce.sb.", 17) != 0 | |
fba2b7f9 | 13774 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); |
252b5132 RH |
13775 | } |
13776 | return change; | |
13777 | } | |
13778 | else | |
c9914766 | 13779 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
13780 | return 1; |
13781 | } | |
13782 | ||
5919d012 RS |
13783 | |
13784 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
13785 | ||
13786 | static bfd_boolean | |
17a2f251 | 13787 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
13788 | { |
13789 | asection *symsec; | |
5919d012 RS |
13790 | |
13791 | /* Handle the case of a symbol equated to another symbol. */ | |
13792 | while (symbol_equated_reloc_p (sym)) | |
13793 | { | |
13794 | symbolS *n; | |
13795 | ||
5f0fe04b | 13796 | /* It's possible to get a loop here in a badly written program. */ |
5919d012 RS |
13797 | n = symbol_get_value_expression (sym)->X_add_symbol; |
13798 | if (n == sym) | |
13799 | break; | |
13800 | sym = n; | |
13801 | } | |
13802 | ||
df1f3cda DD |
13803 | if (symbol_section_p (sym)) |
13804 | return TRUE; | |
13805 | ||
5919d012 RS |
13806 | symsec = S_GET_SEGMENT (sym); |
13807 | ||
5919d012 RS |
13808 | /* This must duplicate the test in adjust_reloc_syms. */ |
13809 | return (symsec != &bfd_und_section | |
13810 | && symsec != &bfd_abs_section | |
5f0fe04b TS |
13811 | && !bfd_is_com_section (symsec) |
13812 | && !s_is_linkonce (sym, segtype) | |
5919d012 RS |
13813 | #ifdef OBJ_ELF |
13814 | /* A global or weak symbol is treated as external. */ | |
f43abd2b | 13815 | && (!IS_ELF || (! S_IS_WEAK (sym) && ! S_IS_EXTERNAL (sym))) |
5919d012 RS |
13816 | #endif |
13817 | ); | |
13818 | } | |
13819 | ||
13820 | ||
252b5132 RH |
13821 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
13822 | extended opcode. SEC is the section the frag is in. */ | |
13823 | ||
13824 | static int | |
17a2f251 | 13825 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
13826 | { |
13827 | int type; | |
3994f87e | 13828 | const struct mips16_immed_operand *op; |
252b5132 RH |
13829 | offsetT val; |
13830 | int mintiny, maxtiny; | |
13831 | segT symsec; | |
98aa84af | 13832 | fragS *sym_frag; |
252b5132 RH |
13833 | |
13834 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
13835 | return 0; | |
13836 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
13837 | return 1; | |
13838 | ||
13839 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
13840 | op = mips16_immed_operands; | |
13841 | while (op->type != type) | |
13842 | { | |
13843 | ++op; | |
9c2799c2 | 13844 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
13845 | } |
13846 | ||
13847 | if (op->unsp) | |
13848 | { | |
13849 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
13850 | { | |
13851 | mintiny = 1; | |
13852 | maxtiny = 1 << op->nbits; | |
13853 | } | |
13854 | else | |
13855 | { | |
13856 | mintiny = 0; | |
13857 | maxtiny = (1 << op->nbits) - 1; | |
13858 | } | |
13859 | } | |
13860 | else | |
13861 | { | |
13862 | mintiny = - (1 << (op->nbits - 1)); | |
13863 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
13864 | } | |
13865 | ||
98aa84af | 13866 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 13867 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 13868 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
13869 | |
13870 | if (op->pcrel) | |
13871 | { | |
13872 | addressT addr; | |
13873 | ||
13874 | /* We won't have the section when we are called from | |
13875 | mips_relax_frag. However, we will always have been called | |
13876 | from md_estimate_size_before_relax first. If this is a | |
13877 | branch to a different section, we mark it as such. If SEC is | |
13878 | NULL, and the frag is not marked, then it must be a branch to | |
13879 | the same section. */ | |
13880 | if (sec == NULL) | |
13881 | { | |
13882 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
13883 | return 1; | |
13884 | } | |
13885 | else | |
13886 | { | |
98aa84af | 13887 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
13888 | if (symsec != sec) |
13889 | { | |
13890 | fragp->fr_subtype = | |
13891 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13892 | ||
13893 | /* FIXME: We should support this, and let the linker | |
13894 | catch branches and loads that are out of range. */ | |
13895 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
13896 | _("unsupported PC relative reference to different section")); | |
13897 | ||
13898 | return 1; | |
13899 | } | |
98aa84af AM |
13900 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
13901 | /* Assume non-extended on the first relaxation pass. | |
13902 | The address we have calculated will be bogus if this is | |
13903 | a forward branch to another frag, as the forward frag | |
13904 | will have fr_address == 0. */ | |
13905 | return 0; | |
252b5132 RH |
13906 | } |
13907 | ||
13908 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
13909 | the same section. If the relax_marker of the symbol fragment |
13910 | differs from the relax_marker of this fragment, we have not | |
13911 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
13912 | in STRETCH in order to get a better estimate of the address. |
13913 | This particularly matters because of the shift bits. */ | |
13914 | if (stretch != 0 | |
98aa84af | 13915 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
13916 | { |
13917 | fragS *f; | |
13918 | ||
13919 | /* Adjust stretch for any alignment frag. Note that if have | |
13920 | been expanding the earlier code, the symbol may be | |
13921 | defined in what appears to be an earlier frag. FIXME: | |
13922 | This doesn't handle the fr_subtype field, which specifies | |
13923 | a maximum number of bytes to skip when doing an | |
13924 | alignment. */ | |
98aa84af | 13925 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
13926 | { |
13927 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
13928 | { | |
13929 | if (stretch < 0) | |
13930 | stretch = - ((- stretch) | |
13931 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
13932 | else | |
13933 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
13934 | if (stretch == 0) | |
13935 | break; | |
13936 | } | |
13937 | } | |
13938 | if (f != NULL) | |
13939 | val += stretch; | |
13940 | } | |
13941 | ||
13942 | addr = fragp->fr_address + fragp->fr_fix; | |
13943 | ||
13944 | /* The base address rules are complicated. The base address of | |
13945 | a branch is the following instruction. The base address of a | |
13946 | PC relative load or add is the instruction itself, but if it | |
13947 | is in a delay slot (in which case it can not be extended) use | |
13948 | the address of the instruction whose delay slot it is in. */ | |
13949 | if (type == 'p' || type == 'q') | |
13950 | { | |
13951 | addr += 2; | |
13952 | ||
13953 | /* If we are currently assuming that this frag should be | |
13954 | extended, then, the current address is two bytes | |
bdaaa2e1 | 13955 | higher. */ |
252b5132 RH |
13956 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
13957 | addr += 2; | |
13958 | ||
13959 | /* Ignore the low bit in the target, since it will be set | |
13960 | for a text label. */ | |
13961 | if ((val & 1) != 0) | |
13962 | --val; | |
13963 | } | |
13964 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
13965 | addr -= 4; | |
13966 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
13967 | addr -= 2; | |
13968 | ||
13969 | val -= addr & ~ ((1 << op->shift) - 1); | |
13970 | ||
13971 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
13972 | if (type == 'p' || type == 'q') | |
13973 | val /= 2; | |
13974 | ||
13975 | /* If any of the shifted bits are set, we must use an extended | |
13976 | opcode. If the address depends on the size of this | |
13977 | instruction, this can lead to a loop, so we arrange to always | |
13978 | use an extended opcode. We only check this when we are in | |
13979 | the main relaxation loop, when SEC is NULL. */ | |
13980 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
13981 | { | |
13982 | fragp->fr_subtype = | |
13983 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13984 | return 1; | |
13985 | } | |
13986 | ||
13987 | /* If we are about to mark a frag as extended because the value | |
13988 | is precisely maxtiny + 1, then there is a chance of an | |
13989 | infinite loop as in the following code: | |
13990 | la $4,foo | |
13991 | .skip 1020 | |
13992 | .align 2 | |
13993 | foo: | |
13994 | In this case when the la is extended, foo is 0x3fc bytes | |
13995 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
13996 | the la must be extended. To avoid this loop, we mark the | |
13997 | frag as extended if it was small, and is about to become | |
13998 | extended with a value of maxtiny + 1. */ | |
13999 | if (val == ((maxtiny + 1) << op->shift) | |
14000 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
14001 | && sec == NULL) | |
14002 | { | |
14003 | fragp->fr_subtype = | |
14004 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
14005 | return 1; | |
14006 | } | |
14007 | } | |
14008 | else if (symsec != absolute_section && sec != NULL) | |
14009 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
14010 | ||
14011 | if ((val & ((1 << op->shift) - 1)) != 0 | |
14012 | || val < (mintiny << op->shift) | |
14013 | || val > (maxtiny << op->shift)) | |
14014 | return 1; | |
14015 | else | |
14016 | return 0; | |
14017 | } | |
14018 | ||
4a6a3df4 AO |
14019 | /* Compute the length of a branch sequence, and adjust the |
14020 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
14021 | worst-case length is computed, with UPDATE being used to indicate | |
14022 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
14023 | branch is to be computed. */ | |
14024 | static int | |
17a2f251 | 14025 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 14026 | { |
b34976b6 | 14027 | bfd_boolean toofar; |
4a6a3df4 AO |
14028 | int length; |
14029 | ||
14030 | if (fragp | |
14031 | && S_IS_DEFINED (fragp->fr_symbol) | |
14032 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
14033 | { | |
14034 | addressT addr; | |
14035 | offsetT val; | |
14036 | ||
14037 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
14038 | ||
14039 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
14040 | ||
14041 | val -= addr; | |
14042 | ||
14043 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
14044 | } | |
14045 | else if (fragp) | |
14046 | /* If the symbol is not defined or it's in a different segment, | |
14047 | assume the user knows what's going on and emit a short | |
14048 | branch. */ | |
b34976b6 | 14049 | toofar = FALSE; |
4a6a3df4 | 14050 | else |
b34976b6 | 14051 | toofar = TRUE; |
4a6a3df4 AO |
14052 | |
14053 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
14054 | fragp->fr_subtype | |
af6ae2ad | 14055 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_UNCOND (fragp->fr_subtype), |
4a6a3df4 AO |
14056 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
14057 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
14058 | toofar); | |
14059 | ||
14060 | length = 4; | |
14061 | if (toofar) | |
14062 | { | |
14063 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
14064 | length += 8; | |
14065 | ||
14066 | if (mips_pic != NO_PIC) | |
14067 | { | |
14068 | /* Additional space for PIC loading of target address. */ | |
14069 | length += 8; | |
14070 | if (mips_opts.isa == ISA_MIPS1) | |
14071 | /* Additional space for $at-stabilizing nop. */ | |
14072 | length += 4; | |
14073 | } | |
14074 | ||
14075 | /* If branch is conditional. */ | |
14076 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
14077 | length += 8; | |
14078 | } | |
b34976b6 | 14079 | |
4a6a3df4 AO |
14080 | return length; |
14081 | } | |
14082 | ||
252b5132 RH |
14083 | /* Estimate the size of a frag before relaxing. Unless this is the |
14084 | mips16, we are not really relaxing here, and the final size is | |
14085 | encoded in the subtype information. For the mips16, we have to | |
14086 | decide whether we are using an extended opcode or not. */ | |
14087 | ||
252b5132 | 14088 | int |
17a2f251 | 14089 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 14090 | { |
5919d012 | 14091 | int change; |
252b5132 | 14092 | |
4a6a3df4 AO |
14093 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
14094 | { | |
14095 | ||
b34976b6 AM |
14096 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
14097 | ||
4a6a3df4 AO |
14098 | return fragp->fr_var; |
14099 | } | |
14100 | ||
252b5132 | 14101 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
14102 | /* We don't want to modify the EXTENDED bit here; it might get us |
14103 | into infinite loops. We change it only in mips_relax_frag(). */ | |
14104 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 RH |
14105 | |
14106 | if (mips_pic == NO_PIC) | |
5919d012 | 14107 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 14108 | else if (mips_pic == SVR4_PIC) |
5919d012 | 14109 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
14110 | else if (mips_pic == VXWORKS_PIC) |
14111 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
14112 | change = 0; | |
252b5132 RH |
14113 | else |
14114 | abort (); | |
14115 | ||
14116 | if (change) | |
14117 | { | |
4d7206a2 | 14118 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 14119 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 14120 | } |
4d7206a2 RS |
14121 | else |
14122 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
14123 | } |
14124 | ||
14125 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 14126 | should be converted into a reloc against a section. */ |
252b5132 RH |
14127 | |
14128 | int | |
17a2f251 | 14129 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 14130 | { |
252b5132 RH |
14131 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
14132 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
14133 | return 0; | |
a161fe53 | 14134 | |
252b5132 RH |
14135 | if (fixp->fx_addsy == NULL) |
14136 | return 1; | |
a161fe53 | 14137 | |
de7e6852 RS |
14138 | /* If symbol SYM is in a mergeable section, relocations of the form |
14139 | SYM + 0 can usually be made section-relative. The mergeable data | |
14140 | is then identified by the section offset rather than by the symbol. | |
14141 | ||
14142 | However, if we're generating REL LO16 relocations, the offset is split | |
14143 | between the LO16 and parterning high part relocation. The linker will | |
14144 | need to recalculate the complete offset in order to correctly identify | |
14145 | the merge data. | |
14146 | ||
14147 | The linker has traditionally not looked for the parterning high part | |
14148 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
14149 | placed anywhere. Rather than break backwards compatibility by changing | |
14150 | this, it seems better not to force the issue, and instead keep the | |
14151 | original symbol. This will work with either linker behavior. */ | |
738e5348 | 14152 | if ((lo16_reloc_p (fixp->fx_r_type) |
704803a9 | 14153 | || reloc_needs_lo_p (fixp->fx_r_type)) |
de7e6852 RS |
14154 | && HAVE_IN_PLACE_ADDENDS |
14155 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
14156 | return 0; | |
14157 | ||
1180b5a4 RS |
14158 | /* There is no place to store an in-place offset for JALR relocations. */ |
14159 | if (fixp->fx_r_type == BFD_RELOC_MIPS_JALR && HAVE_IN_PLACE_ADDENDS) | |
14160 | return 0; | |
14161 | ||
252b5132 | 14162 | #ifdef OBJ_ELF |
b314ec0e RS |
14163 | /* R_MIPS16_26 relocations against non-MIPS16 functions might resolve |
14164 | to a floating-point stub. The same is true for non-R_MIPS16_26 | |
14165 | relocations against MIPS16 functions; in this case, the stub becomes | |
14166 | the function's canonical address. | |
14167 | ||
14168 | Floating-point stubs are stored in unique .mips16.call.* or | |
14169 | .mips16.fn.* sections. If a stub T for function F is in section S, | |
14170 | the first relocation in section S must be against F; this is how the | |
14171 | linker determines the target function. All relocations that might | |
14172 | resolve to T must also be against F. We therefore have the following | |
14173 | restrictions, which are given in an intentionally-redundant way: | |
14174 | ||
14175 | 1. We cannot reduce R_MIPS16_26 relocations against non-MIPS16 | |
14176 | symbols. | |
14177 | ||
14178 | 2. We cannot reduce a stub's relocations against non-MIPS16 symbols | |
14179 | if that stub might be used. | |
14180 | ||
14181 | 3. We cannot reduce non-R_MIPS16_26 relocations against MIPS16 | |
14182 | symbols. | |
14183 | ||
14184 | 4. We cannot reduce a stub's relocations against MIPS16 symbols if | |
14185 | that stub might be used. | |
14186 | ||
14187 | There is a further restriction: | |
14188 | ||
14189 | 5. We cannot reduce R_MIPS16_26 relocations against MIPS16 symbols | |
14190 | on targets with in-place addends; the relocation field cannot | |
14191 | encode the low bit. | |
14192 | ||
14193 | For simplicity, we deal with (3)-(5) by not reducing _any_ relocation | |
14194 | against a MIPS16 symbol. | |
14195 | ||
14196 | We deal with (1)-(2) by saying that, if there's a R_MIPS16_26 | |
14197 | relocation against some symbol R, no relocation against R may be | |
14198 | reduced. (Note that this deals with (2) as well as (1) because | |
14199 | relocations against global symbols will never be reduced on ELF | |
14200 | targets.) This approach is a little simpler than trying to detect | |
14201 | stub sections, and gives the "all or nothing" per-symbol consistency | |
14202 | that we have for MIPS16 symbols. */ | |
f43abd2b | 14203 | if (IS_ELF |
b314ec0e | 14204 | && fixp->fx_subsy == NULL |
30c09090 | 14205 | && (ELF_ST_IS_MIPS16 (S_GET_OTHER (fixp->fx_addsy)) |
b314ec0e | 14206 | || *symbol_get_tc (fixp->fx_addsy))) |
252b5132 RH |
14207 | return 0; |
14208 | #endif | |
a161fe53 | 14209 | |
252b5132 RH |
14210 | return 1; |
14211 | } | |
14212 | ||
14213 | /* Translate internal representation of relocation info to BFD target | |
14214 | format. */ | |
14215 | ||
14216 | arelent ** | |
17a2f251 | 14217 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
14218 | { |
14219 | static arelent *retval[4]; | |
14220 | arelent *reloc; | |
14221 | bfd_reloc_code_real_type code; | |
14222 | ||
4b0cff4e TS |
14223 | memset (retval, 0, sizeof(retval)); |
14224 | reloc = retval[0] = (arelent *) xcalloc (1, sizeof (arelent)); | |
49309057 ILT |
14225 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
14226 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
14227 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
14228 | ||
bad36eac DJ |
14229 | if (fixp->fx_pcrel) |
14230 | { | |
9c2799c2 | 14231 | gas_assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2); |
bad36eac DJ |
14232 | |
14233 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
14234 | Relocations want only the symbol offset. */ | |
14235 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
f43abd2b | 14236 | if (!IS_ELF) |
bad36eac DJ |
14237 | { |
14238 | /* A gruesome hack which is a result of the gruesome gas | |
14239 | reloc handling. What's worse, for COFF (as opposed to | |
14240 | ECOFF), we might need yet another copy of reloc->address. | |
14241 | See bfd_install_relocation. */ | |
14242 | reloc->addend += reloc->address; | |
14243 | } | |
14244 | } | |
14245 | else | |
14246 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 14247 | |
438c16b8 TS |
14248 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
14249 | entry to be used in the relocation's section offset. */ | |
14250 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
14251 | { |
14252 | reloc->address = reloc->addend; | |
14253 | reloc->addend = 0; | |
14254 | } | |
14255 | ||
252b5132 | 14256 | code = fixp->fx_r_type; |
252b5132 | 14257 | |
bad36eac | 14258 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
14259 | if (reloc->howto == NULL) |
14260 | { | |
14261 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
14262 | _("Can not represent %s relocation in this object file format"), | |
14263 | bfd_get_reloc_code_name (code)); | |
14264 | retval[0] = NULL; | |
14265 | } | |
14266 | ||
14267 | return retval; | |
14268 | } | |
14269 | ||
14270 | /* Relax a machine dependent frag. This returns the amount by which | |
14271 | the current size of the frag should change. */ | |
14272 | ||
14273 | int | |
17a2f251 | 14274 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 14275 | { |
4a6a3df4 AO |
14276 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
14277 | { | |
14278 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
14279 | |
14280 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
14281 | |
14282 | return fragp->fr_var - old_var; | |
14283 | } | |
14284 | ||
252b5132 RH |
14285 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
14286 | return 0; | |
14287 | ||
c4e7957c | 14288 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
14289 | { |
14290 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14291 | return 0; | |
14292 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
14293 | return 2; | |
14294 | } | |
14295 | else | |
14296 | { | |
14297 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14298 | return 0; | |
14299 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
14300 | return -2; | |
14301 | } | |
14302 | ||
14303 | return 0; | |
14304 | } | |
14305 | ||
14306 | /* Convert a machine dependent frag. */ | |
14307 | ||
14308 | void | |
17a2f251 | 14309 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 14310 | { |
4a6a3df4 AO |
14311 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
14312 | { | |
14313 | bfd_byte *buf; | |
14314 | unsigned long insn; | |
14315 | expressionS exp; | |
14316 | fixS *fixp; | |
b34976b6 | 14317 | |
4a6a3df4 AO |
14318 | buf = (bfd_byte *)fragp->fr_literal + fragp->fr_fix; |
14319 | ||
14320 | if (target_big_endian) | |
14321 | insn = bfd_getb32 (buf); | |
14322 | else | |
14323 | insn = bfd_getl32 (buf); | |
b34976b6 | 14324 | |
4a6a3df4 AO |
14325 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
14326 | { | |
14327 | /* We generate a fixup instead of applying it right now | |
14328 | because, if there are linker relaxations, we're going to | |
14329 | need the relocations. */ | |
14330 | exp.X_op = O_symbol; | |
14331 | exp.X_add_symbol = fragp->fr_symbol; | |
14332 | exp.X_add_number = fragp->fr_offset; | |
14333 | ||
14334 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14335 | 4, &exp, TRUE, BFD_RELOC_16_PCREL_S2); |
4a6a3df4 AO |
14336 | fixp->fx_file = fragp->fr_file; |
14337 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 14338 | |
2132e3a3 | 14339 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14340 | buf += 4; |
14341 | } | |
14342 | else | |
14343 | { | |
14344 | int i; | |
14345 | ||
14346 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
14347 | _("relaxed out-of-range branch into a jump")); | |
14348 | ||
14349 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
14350 | goto uncond; | |
14351 | ||
14352 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14353 | { | |
14354 | /* Reverse the branch. */ | |
14355 | switch ((insn >> 28) & 0xf) | |
14356 | { | |
14357 | case 4: | |
14358 | /* bc[0-3][tf]l? and bc1any[24][ft] instructions can | |
14359 | have the condition reversed by tweaking a single | |
14360 | bit, and their opcodes all have 0x4???????. */ | |
9c2799c2 | 14361 | gas_assert ((insn & 0xf1000000) == 0x41000000); |
4a6a3df4 AO |
14362 | insn ^= 0x00010000; |
14363 | break; | |
14364 | ||
14365 | case 0: | |
14366 | /* bltz 0x04000000 bgez 0x04010000 | |
54f4ddb3 | 14367 | bltzal 0x04100000 bgezal 0x04110000 */ |
9c2799c2 | 14368 | gas_assert ((insn & 0xfc0e0000) == 0x04000000); |
4a6a3df4 AO |
14369 | insn ^= 0x00010000; |
14370 | break; | |
b34976b6 | 14371 | |
4a6a3df4 AO |
14372 | case 1: |
14373 | /* beq 0x10000000 bne 0x14000000 | |
54f4ddb3 | 14374 | blez 0x18000000 bgtz 0x1c000000 */ |
4a6a3df4 AO |
14375 | insn ^= 0x04000000; |
14376 | break; | |
14377 | ||
14378 | default: | |
14379 | abort (); | |
14380 | } | |
14381 | } | |
14382 | ||
14383 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
14384 | { | |
14385 | /* Clear the and-link bit. */ | |
9c2799c2 | 14386 | gas_assert ((insn & 0xfc1c0000) == 0x04100000); |
4a6a3df4 | 14387 | |
54f4ddb3 TS |
14388 | /* bltzal 0x04100000 bgezal 0x04110000 |
14389 | bltzall 0x04120000 bgezall 0x04130000 */ | |
4a6a3df4 AO |
14390 | insn &= ~0x00100000; |
14391 | } | |
14392 | ||
14393 | /* Branch over the branch (if the branch was likely) or the | |
14394 | full jump (not likely case). Compute the offset from the | |
14395 | current instruction to branch to. */ | |
14396 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14397 | i = 16; | |
14398 | else | |
14399 | { | |
14400 | /* How many bytes in instructions we've already emitted? */ | |
14401 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
14402 | /* How many bytes in instructions from here to the end? */ | |
14403 | i = fragp->fr_var - i; | |
14404 | } | |
14405 | /* Convert to instruction count. */ | |
14406 | i >>= 2; | |
14407 | /* Branch counts from the next instruction. */ | |
b34976b6 | 14408 | i--; |
4a6a3df4 AO |
14409 | insn |= i; |
14410 | /* Branch over the jump. */ | |
2132e3a3 | 14411 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14412 | buf += 4; |
14413 | ||
54f4ddb3 | 14414 | /* nop */ |
2132e3a3 | 14415 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
14416 | buf += 4; |
14417 | ||
14418 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14419 | { | |
14420 | /* beql $0, $0, 2f */ | |
14421 | insn = 0x50000000; | |
14422 | /* Compute the PC offset from the current instruction to | |
14423 | the end of the variable frag. */ | |
14424 | /* How many bytes in instructions we've already emitted? */ | |
14425 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
14426 | /* How many bytes in instructions from here to the end? */ | |
14427 | i = fragp->fr_var - i; | |
14428 | /* Convert to instruction count. */ | |
14429 | i >>= 2; | |
14430 | /* Don't decrement i, because we want to branch over the | |
14431 | delay slot. */ | |
14432 | ||
14433 | insn |= i; | |
2132e3a3 | 14434 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14435 | buf += 4; |
14436 | ||
2132e3a3 | 14437 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
14438 | buf += 4; |
14439 | } | |
14440 | ||
14441 | uncond: | |
14442 | if (mips_pic == NO_PIC) | |
14443 | { | |
14444 | /* j or jal. */ | |
14445 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
14446 | ? 0x0c000000 : 0x08000000); | |
14447 | exp.X_op = O_symbol; | |
14448 | exp.X_add_symbol = fragp->fr_symbol; | |
14449 | exp.X_add_number = fragp->fr_offset; | |
14450 | ||
14451 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14452 | 4, &exp, FALSE, BFD_RELOC_MIPS_JMP); |
4a6a3df4 AO |
14453 | fixp->fx_file = fragp->fr_file; |
14454 | fixp->fx_line = fragp->fr_line; | |
14455 | ||
2132e3a3 | 14456 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14457 | buf += 4; |
14458 | } | |
14459 | else | |
14460 | { | |
14461 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ | |
14462 | insn = HAVE_64BIT_ADDRESSES ? 0xdf810000 : 0x8f810000; | |
14463 | exp.X_op = O_symbol; | |
14464 | exp.X_add_symbol = fragp->fr_symbol; | |
14465 | exp.X_add_number = fragp->fr_offset; | |
14466 | ||
14467 | if (fragp->fr_offset) | |
14468 | { | |
14469 | exp.X_add_symbol = make_expr_symbol (&exp); | |
14470 | exp.X_add_number = 0; | |
14471 | } | |
14472 | ||
14473 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14474 | 4, &exp, FALSE, BFD_RELOC_MIPS_GOT16); |
4a6a3df4 AO |
14475 | fixp->fx_file = fragp->fr_file; |
14476 | fixp->fx_line = fragp->fr_line; | |
14477 | ||
2132e3a3 | 14478 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 | 14479 | buf += 4; |
b34976b6 | 14480 | |
4a6a3df4 AO |
14481 | if (mips_opts.isa == ISA_MIPS1) |
14482 | { | |
14483 | /* nop */ | |
2132e3a3 | 14484 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
14485 | buf += 4; |
14486 | } | |
14487 | ||
14488 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
14489 | insn = HAVE_64BIT_ADDRESSES ? 0x64210000 : 0x24210000; | |
14490 | ||
14491 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14492 | 4, &exp, FALSE, BFD_RELOC_LO16); |
4a6a3df4 AO |
14493 | fixp->fx_file = fragp->fr_file; |
14494 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 14495 | |
2132e3a3 | 14496 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14497 | buf += 4; |
14498 | ||
14499 | /* j(al)r $at. */ | |
14500 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
14501 | insn = 0x0020f809; | |
14502 | else | |
14503 | insn = 0x00200008; | |
14504 | ||
2132e3a3 | 14505 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14506 | buf += 4; |
14507 | } | |
14508 | } | |
14509 | ||
9c2799c2 | 14510 | gas_assert (buf == (bfd_byte *)fragp->fr_literal |
4a6a3df4 AO |
14511 | + fragp->fr_fix + fragp->fr_var); |
14512 | ||
14513 | fragp->fr_fix += fragp->fr_var; | |
14514 | ||
14515 | return; | |
14516 | } | |
14517 | ||
252b5132 RH |
14518 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
14519 | { | |
14520 | int type; | |
3994f87e | 14521 | const struct mips16_immed_operand *op; |
b34976b6 | 14522 | bfd_boolean small, ext; |
252b5132 RH |
14523 | offsetT val; |
14524 | bfd_byte *buf; | |
14525 | unsigned long insn; | |
b34976b6 | 14526 | bfd_boolean use_extend; |
252b5132 RH |
14527 | unsigned short extend; |
14528 | ||
14529 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
14530 | op = mips16_immed_operands; | |
14531 | while (op->type != type) | |
14532 | ++op; | |
14533 | ||
14534 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14535 | { | |
b34976b6 AM |
14536 | small = FALSE; |
14537 | ext = TRUE; | |
252b5132 RH |
14538 | } |
14539 | else | |
14540 | { | |
b34976b6 AM |
14541 | small = TRUE; |
14542 | ext = FALSE; | |
252b5132 RH |
14543 | } |
14544 | ||
6386f3a7 | 14545 | resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
14546 | val = S_GET_VALUE (fragp->fr_symbol); |
14547 | if (op->pcrel) | |
14548 | { | |
14549 | addressT addr; | |
14550 | ||
14551 | addr = fragp->fr_address + fragp->fr_fix; | |
14552 | ||
14553 | /* The rules for the base address of a PC relative reloc are | |
14554 | complicated; see mips16_extended_frag. */ | |
14555 | if (type == 'p' || type == 'q') | |
14556 | { | |
14557 | addr += 2; | |
14558 | if (ext) | |
14559 | addr += 2; | |
14560 | /* Ignore the low bit in the target, since it will be | |
14561 | set for a text label. */ | |
14562 | if ((val & 1) != 0) | |
14563 | --val; | |
14564 | } | |
14565 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
14566 | addr -= 4; | |
14567 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
14568 | addr -= 2; | |
14569 | ||
14570 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
14571 | val -= addr; | |
14572 | ||
14573 | /* Make sure the section winds up with the alignment we have | |
14574 | assumed. */ | |
14575 | if (op->shift > 0) | |
14576 | record_alignment (asec, op->shift); | |
14577 | } | |
14578 | ||
14579 | if (ext | |
14580 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
14581 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
14582 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
14583 | _("extended instruction in delay slot")); | |
14584 | ||
14585 | buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
14586 | ||
14587 | if (target_big_endian) | |
14588 | insn = bfd_getb16 (buf); | |
14589 | else | |
14590 | insn = bfd_getl16 (buf); | |
14591 | ||
14592 | mips16_immed (fragp->fr_file, fragp->fr_line, type, val, | |
14593 | RELAX_MIPS16_USER_EXT (fragp->fr_subtype), | |
14594 | small, ext, &insn, &use_extend, &extend); | |
14595 | ||
14596 | if (use_extend) | |
14597 | { | |
2132e3a3 | 14598 | md_number_to_chars ((char *) buf, 0xf000 | extend, 2); |
252b5132 RH |
14599 | fragp->fr_fix += 2; |
14600 | buf += 2; | |
14601 | } | |
14602 | ||
2132e3a3 | 14603 | md_number_to_chars ((char *) buf, insn, 2); |
252b5132 RH |
14604 | fragp->fr_fix += 2; |
14605 | buf += 2; | |
14606 | } | |
14607 | else | |
14608 | { | |
4d7206a2 RS |
14609 | int first, second; |
14610 | fixS *fixp; | |
252b5132 | 14611 | |
4d7206a2 RS |
14612 | first = RELAX_FIRST (fragp->fr_subtype); |
14613 | second = RELAX_SECOND (fragp->fr_subtype); | |
14614 | fixp = (fixS *) fragp->fr_opcode; | |
252b5132 | 14615 | |
584892a6 RS |
14616 | /* Possibly emit a warning if we've chosen the longer option. */ |
14617 | if (((fragp->fr_subtype & RELAX_USE_SECOND) != 0) | |
14618 | == ((fragp->fr_subtype & RELAX_SECOND_LONGER) != 0)) | |
14619 | { | |
14620 | const char *msg = macro_warning (fragp->fr_subtype); | |
14621 | if (msg != 0) | |
520725ea | 14622 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
584892a6 RS |
14623 | } |
14624 | ||
4d7206a2 RS |
14625 | /* Go through all the fixups for the first sequence. Disable them |
14626 | (by marking them as done) if we're going to use the second | |
14627 | sequence instead. */ | |
14628 | while (fixp | |
14629 | && fixp->fx_frag == fragp | |
14630 | && fixp->fx_where < fragp->fr_fix - second) | |
14631 | { | |
14632 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
14633 | fixp->fx_done = 1; | |
14634 | fixp = fixp->fx_next; | |
14635 | } | |
252b5132 | 14636 | |
4d7206a2 RS |
14637 | /* Go through the fixups for the second sequence. Disable them if |
14638 | we're going to use the first sequence, otherwise adjust their | |
14639 | addresses to account for the relaxation. */ | |
14640 | while (fixp && fixp->fx_frag == fragp) | |
14641 | { | |
14642 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
14643 | fixp->fx_where -= first; | |
14644 | else | |
14645 | fixp->fx_done = 1; | |
14646 | fixp = fixp->fx_next; | |
14647 | } | |
14648 | ||
14649 | /* Now modify the frag contents. */ | |
14650 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
14651 | { | |
14652 | char *start; | |
14653 | ||
14654 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
14655 | memmove (start, start + first, second); | |
14656 | fragp->fr_fix -= first; | |
14657 | } | |
14658 | else | |
14659 | fragp->fr_fix -= second; | |
252b5132 RH |
14660 | } |
14661 | } | |
14662 | ||
14663 | #ifdef OBJ_ELF | |
14664 | ||
14665 | /* This function is called after the relocs have been generated. | |
14666 | We've been storing mips16 text labels as odd. Here we convert them | |
14667 | back to even for the convenience of the debugger. */ | |
14668 | ||
14669 | void | |
17a2f251 | 14670 | mips_frob_file_after_relocs (void) |
252b5132 RH |
14671 | { |
14672 | asymbol **syms; | |
14673 | unsigned int count, i; | |
14674 | ||
f43abd2b | 14675 | if (!IS_ELF) |
252b5132 RH |
14676 | return; |
14677 | ||
14678 | syms = bfd_get_outsymbols (stdoutput); | |
14679 | count = bfd_get_symcount (stdoutput); | |
14680 | for (i = 0; i < count; i++, syms++) | |
14681 | { | |
30c09090 | 14682 | if (ELF_ST_IS_MIPS16 (elf_symbol (*syms)->internal_elf_sym.st_other) |
252b5132 RH |
14683 | && ((*syms)->value & 1) != 0) |
14684 | { | |
14685 | (*syms)->value &= ~1; | |
14686 | /* If the symbol has an odd size, it was probably computed | |
14687 | incorrectly, so adjust that as well. */ | |
14688 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
14689 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
14690 | } | |
14691 | } | |
14692 | } | |
14693 | ||
14694 | #endif | |
14695 | ||
14696 | /* This function is called whenever a label is defined. It is used | |
14697 | when handling branch delays; if a branch has a label, we assume we | |
14698 | can not move it. */ | |
14699 | ||
14700 | void | |
17a2f251 | 14701 | mips_define_label (symbolS *sym) |
252b5132 | 14702 | { |
a8dbcb85 | 14703 | segment_info_type *si = seg_info (now_seg); |
252b5132 RH |
14704 | struct insn_label_list *l; |
14705 | ||
14706 | if (free_insn_labels == NULL) | |
14707 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
14708 | else | |
14709 | { | |
14710 | l = free_insn_labels; | |
14711 | free_insn_labels = l->next; | |
14712 | } | |
14713 | ||
14714 | l->label = sym; | |
a8dbcb85 TS |
14715 | l->next = si->label_list; |
14716 | si->label_list = l; | |
07a53e5c RH |
14717 | |
14718 | #ifdef OBJ_ELF | |
14719 | dwarf2_emit_label (sym); | |
14720 | #endif | |
252b5132 RH |
14721 | } |
14722 | \f | |
14723 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
14724 | ||
14725 | /* Some special processing for a MIPS ELF file. */ | |
14726 | ||
14727 | void | |
17a2f251 | 14728 | mips_elf_final_processing (void) |
252b5132 RH |
14729 | { |
14730 | /* Write out the register information. */ | |
316f5878 | 14731 | if (mips_abi != N64_ABI) |
252b5132 RH |
14732 | { |
14733 | Elf32_RegInfo s; | |
14734 | ||
14735 | s.ri_gprmask = mips_gprmask; | |
14736 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14737 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14738 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14739 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14740 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14741 | ||
14742 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
14743 | ((Elf32_External_RegInfo *) | |
14744 | mips_regmask_frag)); | |
14745 | } | |
14746 | else | |
14747 | { | |
14748 | Elf64_Internal_RegInfo s; | |
14749 | ||
14750 | s.ri_gprmask = mips_gprmask; | |
14751 | s.ri_pad = 0; | |
14752 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14753 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14754 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14755 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14756 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14757 | ||
14758 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
14759 | ((Elf64_External_RegInfo *) | |
14760 | mips_regmask_frag)); | |
14761 | } | |
14762 | ||
14763 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
14764 | sort of BFD interface for this. */ | |
14765 | if (mips_any_noreorder) | |
14766 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
14767 | if (mips_pic != NO_PIC) | |
143d77c5 | 14768 | { |
252b5132 | 14769 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
14770 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
14771 | } | |
14772 | if (mips_abicalls) | |
14773 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 14774 | |
98d3f06f | 14775 | /* Set MIPS ELF flags for ASEs. */ |
74cd071d CF |
14776 | /* We may need to define a new flag for DSP ASE, and set this flag when |
14777 | file_ase_dsp is true. */ | |
8b082fb1 | 14778 | /* Same for DSP R2. */ |
ef2e4d86 CF |
14779 | /* We may need to define a new flag for MT ASE, and set this flag when |
14780 | file_ase_mt is true. */ | |
a4672219 TS |
14781 | if (file_ase_mips16) |
14782 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
1f25f5d3 CD |
14783 | #if 0 /* XXX FIXME */ |
14784 | if (file_ase_mips3d) | |
14785 | elf_elfheader (stdoutput)->e_flags |= ???; | |
14786 | #endif | |
deec1734 CD |
14787 | if (file_ase_mdmx) |
14788 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 14789 | |
bdaaa2e1 | 14790 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 14791 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 14792 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 14793 | else if (mips_abi == O64_ABI) |
252b5132 | 14794 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 14795 | else if (mips_abi == EABI_ABI) |
252b5132 | 14796 | { |
316f5878 | 14797 | if (!file_mips_gp32) |
252b5132 RH |
14798 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
14799 | else | |
14800 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
14801 | } | |
316f5878 | 14802 | else if (mips_abi == N32_ABI) |
be00bddd TS |
14803 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
14804 | ||
c9914766 | 14805 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
14806 | |
14807 | if (mips_32bitmode) | |
14808 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 TS |
14809 | |
14810 | #if 0 /* XXX FIXME */ | |
14811 | /* 32 bit code with 64 bit FP registers. */ | |
14812 | if (!file_mips_fp32 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
14813 | elf_elfheader (stdoutput)->e_flags |= ???; | |
14814 | #endif | |
252b5132 RH |
14815 | } |
14816 | ||
14817 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
14818 | \f | |
beae10d5 | 14819 | typedef struct proc { |
9b2f1d35 EC |
14820 | symbolS *func_sym; |
14821 | symbolS *func_end_sym; | |
beae10d5 KH |
14822 | unsigned long reg_mask; |
14823 | unsigned long reg_offset; | |
14824 | unsigned long fpreg_mask; | |
14825 | unsigned long fpreg_offset; | |
14826 | unsigned long frame_offset; | |
14827 | unsigned long frame_reg; | |
14828 | unsigned long pc_reg; | |
14829 | } procS; | |
252b5132 RH |
14830 | |
14831 | static procS cur_proc; | |
14832 | static procS *cur_proc_ptr; | |
14833 | static int numprocs; | |
14834 | ||
742a56fe RS |
14835 | /* Implement NOP_OPCODE. We encode a MIPS16 nop as "1" and a normal |
14836 | nop as "0". */ | |
14837 | ||
14838 | char | |
14839 | mips_nop_opcode (void) | |
14840 | { | |
14841 | return seg_info (now_seg)->tc_segment_info_data.mips16; | |
14842 | } | |
14843 | ||
14844 | /* Fill in an rs_align_code fragment. This only needs to do something | |
14845 | for MIPS16 code, where 0 is not a nop. */ | |
a19d8eb0 | 14846 | |
0a9ef439 | 14847 | void |
17a2f251 | 14848 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 14849 | { |
742a56fe | 14850 | char *p; |
c67a084a NC |
14851 | int bytes, size, excess; |
14852 | valueT opcode; | |
742a56fe | 14853 | |
0a9ef439 RH |
14854 | if (fragp->fr_type != rs_align_code) |
14855 | return; | |
14856 | ||
742a56fe RS |
14857 | p = fragp->fr_literal + fragp->fr_fix; |
14858 | if (*p) | |
a19d8eb0 | 14859 | { |
c67a084a NC |
14860 | opcode = mips16_nop_insn.insn_opcode; |
14861 | size = 2; | |
14862 | } | |
14863 | else | |
14864 | { | |
14865 | opcode = nop_insn.insn_opcode; | |
14866 | size = 4; | |
14867 | } | |
a19d8eb0 | 14868 | |
c67a084a NC |
14869 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
14870 | excess = bytes % size; | |
14871 | if (excess != 0) | |
14872 | { | |
14873 | /* If we're not inserting a whole number of instructions, | |
14874 | pad the end of the fixed part of the frag with zeros. */ | |
14875 | memset (p, 0, excess); | |
14876 | p += excess; | |
14877 | fragp->fr_fix += excess; | |
a19d8eb0 | 14878 | } |
c67a084a NC |
14879 | |
14880 | md_number_to_chars (p, opcode, size); | |
14881 | fragp->fr_var = size; | |
a19d8eb0 CP |
14882 | } |
14883 | ||
252b5132 | 14884 | static void |
17a2f251 | 14885 | md_obj_begin (void) |
252b5132 RH |
14886 | { |
14887 | } | |
14888 | ||
14889 | static void | |
17a2f251 | 14890 | md_obj_end (void) |
252b5132 | 14891 | { |
54f4ddb3 | 14892 | /* Check for premature end, nesting errors, etc. */ |
252b5132 | 14893 | if (cur_proc_ptr) |
9a41af64 | 14894 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
14895 | } |
14896 | ||
14897 | static long | |
17a2f251 | 14898 | get_number (void) |
252b5132 RH |
14899 | { |
14900 | int negative = 0; | |
14901 | long val = 0; | |
14902 | ||
14903 | if (*input_line_pointer == '-') | |
14904 | { | |
14905 | ++input_line_pointer; | |
14906 | negative = 1; | |
14907 | } | |
3882b010 | 14908 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 14909 | as_bad (_("expected simple number")); |
252b5132 RH |
14910 | if (input_line_pointer[0] == '0') |
14911 | { | |
14912 | if (input_line_pointer[1] == 'x') | |
14913 | { | |
14914 | input_line_pointer += 2; | |
3882b010 | 14915 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
14916 | { |
14917 | val <<= 4; | |
14918 | val |= hex_value (*input_line_pointer++); | |
14919 | } | |
14920 | return negative ? -val : val; | |
14921 | } | |
14922 | else | |
14923 | { | |
14924 | ++input_line_pointer; | |
3882b010 | 14925 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14926 | { |
14927 | val <<= 3; | |
14928 | val |= *input_line_pointer++ - '0'; | |
14929 | } | |
14930 | return negative ? -val : val; | |
14931 | } | |
14932 | } | |
3882b010 | 14933 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14934 | { |
14935 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
14936 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 14937 | as_warn (_("invalid number")); |
252b5132 RH |
14938 | return -1; |
14939 | } | |
3882b010 | 14940 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14941 | { |
14942 | val *= 10; | |
14943 | val += *input_line_pointer++ - '0'; | |
14944 | } | |
14945 | return negative ? -val : val; | |
14946 | } | |
14947 | ||
14948 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
14949 | is an initial number which is the ECOFF file index. In the non-ECOFF |
14950 | case .file implies DWARF-2. */ | |
14951 | ||
14952 | static void | |
17a2f251 | 14953 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 14954 | { |
ecb4347a DJ |
14955 | static int first_file_directive = 0; |
14956 | ||
c5dd6aab DJ |
14957 | if (ECOFF_DEBUGGING) |
14958 | { | |
14959 | get_number (); | |
14960 | s_app_file (0); | |
14961 | } | |
14962 | else | |
ecb4347a DJ |
14963 | { |
14964 | char *filename; | |
14965 | ||
14966 | filename = dwarf2_directive_file (0); | |
14967 | ||
14968 | /* Versions of GCC up to 3.1 start files with a ".file" | |
14969 | directive even for stabs output. Make sure that this | |
14970 | ".file" is handled. Note that you need a version of GCC | |
14971 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
14972 | if (filename != NULL && ! first_file_directive) | |
14973 | { | |
14974 | (void) new_logical_line (filename, -1); | |
c04f5787 | 14975 | s_app_file_string (filename, 0); |
ecb4347a DJ |
14976 | } |
14977 | first_file_directive = 1; | |
14978 | } | |
c5dd6aab DJ |
14979 | } |
14980 | ||
14981 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
14982 | |
14983 | static void | |
17a2f251 | 14984 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 14985 | { |
c5dd6aab DJ |
14986 | if (!ECOFF_DEBUGGING) |
14987 | dwarf2_directive_loc (0); | |
252b5132 RH |
14988 | } |
14989 | ||
252b5132 RH |
14990 | /* The .end directive. */ |
14991 | ||
14992 | static void | |
17a2f251 | 14993 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
14994 | { |
14995 | symbolS *p; | |
252b5132 | 14996 | |
7a621144 DJ |
14997 | /* Following functions need their own .frame and .cprestore directives. */ |
14998 | mips_frame_reg_valid = 0; | |
14999 | mips_cprestore_valid = 0; | |
15000 | ||
252b5132 RH |
15001 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
15002 | { | |
15003 | p = get_symbol (); | |
15004 | demand_empty_rest_of_line (); | |
15005 | } | |
15006 | else | |
15007 | p = NULL; | |
15008 | ||
14949570 | 15009 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
15010 | as_warn (_(".end not in text section")); |
15011 | ||
15012 | if (!cur_proc_ptr) | |
15013 | { | |
15014 | as_warn (_(".end directive without a preceding .ent directive.")); | |
15015 | demand_empty_rest_of_line (); | |
15016 | return; | |
15017 | } | |
15018 | ||
15019 | if (p != NULL) | |
15020 | { | |
9c2799c2 | 15021 | gas_assert (S_GET_NAME (p)); |
9b2f1d35 | 15022 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
252b5132 | 15023 | as_warn (_(".end symbol does not match .ent symbol.")); |
ecb4347a DJ |
15024 | |
15025 | if (debug_type == DEBUG_STABS) | |
15026 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
15027 | S_GET_NAME (p)); | |
252b5132 RH |
15028 | } |
15029 | else | |
15030 | as_warn (_(".end directive missing or unknown symbol")); | |
15031 | ||
2132e3a3 | 15032 | #ifdef OBJ_ELF |
9b2f1d35 EC |
15033 | /* Create an expression to calculate the size of the function. */ |
15034 | if (p && cur_proc_ptr) | |
15035 | { | |
15036 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
15037 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
15038 | ||
15039 | obj->size = exp; | |
15040 | exp->X_op = O_subtract; | |
15041 | exp->X_add_symbol = symbol_temp_new_now (); | |
15042 | exp->X_op_symbol = p; | |
15043 | exp->X_add_number = 0; | |
15044 | ||
15045 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
15046 | } | |
15047 | ||
ecb4347a | 15048 | /* Generate a .pdr section. */ |
f43abd2b | 15049 | if (IS_ELF && !ECOFF_DEBUGGING && mips_flag_pdr) |
ecb4347a DJ |
15050 | { |
15051 | segT saved_seg = now_seg; | |
15052 | subsegT saved_subseg = now_subseg; | |
ecb4347a DJ |
15053 | expressionS exp; |
15054 | char *fragp; | |
252b5132 | 15055 | |
252b5132 | 15056 | #ifdef md_flush_pending_output |
ecb4347a | 15057 | md_flush_pending_output (); |
252b5132 RH |
15058 | #endif |
15059 | ||
9c2799c2 | 15060 | gas_assert (pdr_seg); |
ecb4347a | 15061 | subseg_set (pdr_seg, 0); |
252b5132 | 15062 | |
ecb4347a DJ |
15063 | /* Write the symbol. */ |
15064 | exp.X_op = O_symbol; | |
15065 | exp.X_add_symbol = p; | |
15066 | exp.X_add_number = 0; | |
15067 | emit_expr (&exp, 4); | |
252b5132 | 15068 | |
ecb4347a | 15069 | fragp = frag_more (7 * 4); |
252b5132 | 15070 | |
17a2f251 TS |
15071 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
15072 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
15073 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
15074 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
15075 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
15076 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
15077 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 15078 | |
ecb4347a DJ |
15079 | subseg_set (saved_seg, saved_subseg); |
15080 | } | |
15081 | #endif /* OBJ_ELF */ | |
252b5132 RH |
15082 | |
15083 | cur_proc_ptr = NULL; | |
15084 | } | |
15085 | ||
15086 | /* The .aent and .ent directives. */ | |
15087 | ||
15088 | static void | |
17a2f251 | 15089 | s_mips_ent (int aent) |
252b5132 | 15090 | { |
252b5132 | 15091 | symbolS *symbolP; |
252b5132 RH |
15092 | |
15093 | symbolP = get_symbol (); | |
15094 | if (*input_line_pointer == ',') | |
f9419b05 | 15095 | ++input_line_pointer; |
252b5132 | 15096 | SKIP_WHITESPACE (); |
3882b010 | 15097 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 15098 | || *input_line_pointer == '-') |
874e8986 | 15099 | get_number (); |
252b5132 | 15100 | |
14949570 | 15101 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
15102 | as_warn (_(".ent or .aent not in text section.")); |
15103 | ||
15104 | if (!aent && cur_proc_ptr) | |
9a41af64 | 15105 | as_warn (_("missing .end")); |
252b5132 RH |
15106 | |
15107 | if (!aent) | |
15108 | { | |
7a621144 DJ |
15109 | /* This function needs its own .frame and .cprestore directives. */ |
15110 | mips_frame_reg_valid = 0; | |
15111 | mips_cprestore_valid = 0; | |
15112 | ||
252b5132 RH |
15113 | cur_proc_ptr = &cur_proc; |
15114 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
15115 | ||
9b2f1d35 | 15116 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 15117 | |
f9419b05 | 15118 | ++numprocs; |
ecb4347a DJ |
15119 | |
15120 | if (debug_type == DEBUG_STABS) | |
15121 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
15122 | S_GET_NAME (symbolP)); | |
252b5132 RH |
15123 | } |
15124 | ||
7c0fc524 MR |
15125 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
15126 | ||
252b5132 RH |
15127 | demand_empty_rest_of_line (); |
15128 | } | |
15129 | ||
15130 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 15131 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 15132 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 15133 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
15134 | symbol table (in the mdebug section). */ |
15135 | ||
15136 | static void | |
17a2f251 | 15137 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 15138 | { |
ecb4347a | 15139 | #ifdef OBJ_ELF |
f43abd2b | 15140 | if (IS_ELF && !ECOFF_DEBUGGING) |
ecb4347a DJ |
15141 | { |
15142 | long val; | |
252b5132 | 15143 | |
ecb4347a DJ |
15144 | if (cur_proc_ptr == (procS *) NULL) |
15145 | { | |
15146 | as_warn (_(".frame outside of .ent")); | |
15147 | demand_empty_rest_of_line (); | |
15148 | return; | |
15149 | } | |
252b5132 | 15150 | |
ecb4347a DJ |
15151 | cur_proc_ptr->frame_reg = tc_get_register (1); |
15152 | ||
15153 | SKIP_WHITESPACE (); | |
15154 | if (*input_line_pointer++ != ',' | |
15155 | || get_absolute_expression_and_terminator (&val) != ',') | |
15156 | { | |
15157 | as_warn (_("Bad .frame directive")); | |
15158 | --input_line_pointer; | |
15159 | demand_empty_rest_of_line (); | |
15160 | return; | |
15161 | } | |
252b5132 | 15162 | |
ecb4347a DJ |
15163 | cur_proc_ptr->frame_offset = val; |
15164 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 15165 | |
252b5132 | 15166 | demand_empty_rest_of_line (); |
252b5132 | 15167 | } |
ecb4347a DJ |
15168 | else |
15169 | #endif /* OBJ_ELF */ | |
15170 | s_ignore (ignore); | |
252b5132 RH |
15171 | } |
15172 | ||
bdaaa2e1 KH |
15173 | /* The .fmask and .mask directives. If the mdebug section is present |
15174 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 15175 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 15176 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
15177 | make reference to the ecoff symbol table (in the mdebug section). */ |
15178 | ||
15179 | static void | |
17a2f251 | 15180 | s_mips_mask (int reg_type) |
252b5132 | 15181 | { |
ecb4347a | 15182 | #ifdef OBJ_ELF |
f43abd2b | 15183 | if (IS_ELF && !ECOFF_DEBUGGING) |
252b5132 | 15184 | { |
ecb4347a | 15185 | long mask, off; |
252b5132 | 15186 | |
ecb4347a DJ |
15187 | if (cur_proc_ptr == (procS *) NULL) |
15188 | { | |
15189 | as_warn (_(".mask/.fmask outside of .ent")); | |
15190 | demand_empty_rest_of_line (); | |
15191 | return; | |
15192 | } | |
252b5132 | 15193 | |
ecb4347a DJ |
15194 | if (get_absolute_expression_and_terminator (&mask) != ',') |
15195 | { | |
15196 | as_warn (_("Bad .mask/.fmask directive")); | |
15197 | --input_line_pointer; | |
15198 | demand_empty_rest_of_line (); | |
15199 | return; | |
15200 | } | |
252b5132 | 15201 | |
ecb4347a DJ |
15202 | off = get_absolute_expression (); |
15203 | ||
15204 | if (reg_type == 'F') | |
15205 | { | |
15206 | cur_proc_ptr->fpreg_mask = mask; | |
15207 | cur_proc_ptr->fpreg_offset = off; | |
15208 | } | |
15209 | else | |
15210 | { | |
15211 | cur_proc_ptr->reg_mask = mask; | |
15212 | cur_proc_ptr->reg_offset = off; | |
15213 | } | |
15214 | ||
15215 | demand_empty_rest_of_line (); | |
252b5132 RH |
15216 | } |
15217 | else | |
ecb4347a DJ |
15218 | #endif /* OBJ_ELF */ |
15219 | s_ignore (reg_type); | |
252b5132 RH |
15220 | } |
15221 | ||
316f5878 RS |
15222 | /* A table describing all the processors gas knows about. Names are |
15223 | matched in the order listed. | |
e7af610e | 15224 | |
316f5878 RS |
15225 | To ease comparison, please keep this table in the same order as |
15226 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
15227 | static const struct mips_cpu_info mips_cpu_info_table[] = |
15228 | { | |
316f5878 | 15229 | /* Entries for generic ISAs */ |
ad3fea08 TS |
15230 | { "mips1", MIPS_CPU_IS_ISA, ISA_MIPS1, CPU_R3000 }, |
15231 | { "mips2", MIPS_CPU_IS_ISA, ISA_MIPS2, CPU_R6000 }, | |
15232 | { "mips3", MIPS_CPU_IS_ISA, ISA_MIPS3, CPU_R4000 }, | |
15233 | { "mips4", MIPS_CPU_IS_ISA, ISA_MIPS4, CPU_R8000 }, | |
15234 | { "mips5", MIPS_CPU_IS_ISA, ISA_MIPS5, CPU_MIPS5 }, | |
15235 | { "mips32", MIPS_CPU_IS_ISA, ISA_MIPS32, CPU_MIPS32 }, | |
15236 | { "mips32r2", MIPS_CPU_IS_ISA, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15237 | { "mips64", MIPS_CPU_IS_ISA, ISA_MIPS64, CPU_MIPS64 }, | |
15238 | { "mips64r2", MIPS_CPU_IS_ISA, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
316f5878 RS |
15239 | |
15240 | /* MIPS I */ | |
ad3fea08 TS |
15241 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, |
15242 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
15243 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
15244 | |
15245 | /* MIPS II */ | |
ad3fea08 | 15246 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
15247 | |
15248 | /* MIPS III */ | |
ad3fea08 TS |
15249 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, |
15250 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
15251 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
15252 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
15253 | { "vr4120", 0, ISA_MIPS3, CPU_VR4120 }, | |
15254 | { "vr4130", 0, ISA_MIPS3, CPU_VR4120 }, | |
15255 | { "vr4181", 0, ISA_MIPS3, CPU_R4111 }, | |
15256 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, | |
15257 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
15258 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
15259 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
15260 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
b15591bb AN |
15261 | /* ST Microelectronics Loongson 2E and 2F cores */ |
15262 | { "loongson2e", 0, ISA_MIPS3, CPU_LOONGSON_2E }, | |
15263 | { "loongson2f", 0, ISA_MIPS3, CPU_LOONGSON_2F }, | |
316f5878 RS |
15264 | |
15265 | /* MIPS IV */ | |
ad3fea08 TS |
15266 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, |
15267 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
15268 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
3aa3176b TS |
15269 | { "r14000", 0, ISA_MIPS4, CPU_R14000 }, |
15270 | { "r16000", 0, ISA_MIPS4, CPU_R16000 }, | |
ad3fea08 TS |
15271 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, |
15272 | { "vr5400", 0, ISA_MIPS4, CPU_VR5400 }, | |
15273 | { "vr5500", 0, ISA_MIPS4, CPU_VR5500 }, | |
15274 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, | |
15275 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
15276 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
15277 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
15278 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
15279 | { "rm7000", 0, ISA_MIPS4, CPU_RM7000 }, | |
15280 | { "rm9000", 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
15281 | |
15282 | /* MIPS 32 */ | |
ad3fea08 TS |
15283 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32 }, |
15284 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
15285 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
15286 | { "4ksc", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
15287 | ||
15288 | /* MIPS 32 Release 2 */ | |
15289 | { "4kec", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15290 | { "4kem", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15291 | { "4kep", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15292 | { "4ksd", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15293 | { "m4k", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15294 | { "m4kp", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 15295 | { "24kc", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 15296 | { "24kf2_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 15297 | { "24kf", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
15298 | { "24kf1_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
15299 | /* Deprecated forms of the above. */ | |
15300 | { "24kfx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 15301 | { "24kx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 15302 | /* 24KE is a 24K with DSP ASE, other ASEs are optional. */ |
ad3fea08 | 15303 | { "24kec", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 15304 | { "24kef2_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 15305 | { "24kef", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
15306 | { "24kef1_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
15307 | /* Deprecated forms of the above. */ | |
15308 | { "24kefx", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
65263ce3 | 15309 | { "24kex", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 15310 | /* 34K is a 24K with DSP and MT ASE, other ASEs are optional. */ |
a360e743 TS |
15311 | { "34kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15312 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15313 | { "34kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15314 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
15315 | { "34kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15316 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15317 | { "34kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15318 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15319 | /* Deprecated forms of the above. */ | |
15320 | { "34kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
15321 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
15322 | { "34kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15323 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
15324 | /* 74K with DSP and DSPR2 ASE, other ASEs are optional. */ |
15325 | { "74kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
15326 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15327 | { "74kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15328 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
15329 | { "74kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15330 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15331 | { "74kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15332 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15333 | { "74kf3_2", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
15334 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15335 | /* Deprecated forms of the above. */ | |
15336 | { "74kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
15337 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
15338 | { "74kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15339 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
30f8113a SL |
15340 | /* 1004K cores are multiprocessor versions of the 34K. */ |
15341 | { "1004kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
15342 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15343 | { "1004kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
15344 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15345 | { "1004kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
15346 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15347 | { "1004kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
15348 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
32b26a03 | 15349 | |
316f5878 | 15350 | /* MIPS 64 */ |
ad3fea08 TS |
15351 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, |
15352 | { "5kf", 0, ISA_MIPS64, CPU_MIPS64 }, | |
15353 | { "20kc", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
7764b395 | 15354 | { "25kf", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, |
ad3fea08 | 15355 | |
c7a23324 | 15356 | /* Broadcom SB-1 CPU core */ |
65263ce3 TS |
15357 | { "sb1", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, |
15358 | ISA_MIPS64, CPU_SB1 }, | |
1e85aad8 JW |
15359 | /* Broadcom SB-1A CPU core */ |
15360 | { "sb1a", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, | |
15361 | ISA_MIPS64, CPU_SB1 }, | |
e7af610e | 15362 | |
ed163775 MR |
15363 | /* MIPS 64 Release 2 */ |
15364 | ||
967344c6 AN |
15365 | /* Cavium Networks Octeon CPU core */ |
15366 | { "octeon", 0, ISA_MIPS64R2, CPU_OCTEON }, | |
15367 | ||
52b6b6b9 JM |
15368 | /* RMI Xlr */ |
15369 | { "xlr", 0, ISA_MIPS64, CPU_XLR }, | |
15370 | ||
316f5878 RS |
15371 | /* End marker */ |
15372 | { NULL, 0, 0, 0 } | |
15373 | }; | |
e7af610e | 15374 | |
84ea6cf2 | 15375 | |
316f5878 RS |
15376 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
15377 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 15378 | |
316f5878 | 15379 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 15380 | |
b34976b6 | 15381 | static bfd_boolean |
17a2f251 | 15382 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
15383 | { |
15384 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
15385 | given++, canonical++; | |
15386 | ||
15387 | return ((*given == 0 && *canonical == 0) | |
15388 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
15389 | } | |
15390 | ||
15391 | ||
15392 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
15393 | CPU name. We've traditionally allowed a lot of variation here. | |
15394 | ||
15395 | Note: this function is shared between GCC and GAS. */ | |
15396 | ||
b34976b6 | 15397 | static bfd_boolean |
17a2f251 | 15398 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
15399 | { |
15400 | /* First see if the name matches exactly, or with a final "000" | |
15401 | turned into "k". */ | |
15402 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 15403 | return TRUE; |
316f5878 RS |
15404 | |
15405 | /* If not, try comparing based on numerical designation alone. | |
15406 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
15407 | if (TOLOWER (*given) == 'r') | |
15408 | given++; | |
15409 | if (!ISDIGIT (*given)) | |
b34976b6 | 15410 | return FALSE; |
316f5878 RS |
15411 | |
15412 | /* Skip over some well-known prefixes in the canonical name, | |
15413 | hoping to find a number there too. */ | |
15414 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
15415 | canonical += 2; | |
15416 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
15417 | canonical += 2; | |
15418 | else if (TOLOWER (canonical[0]) == 'r') | |
15419 | canonical += 1; | |
15420 | ||
15421 | return mips_strict_matching_cpu_name_p (canonical, given); | |
15422 | } | |
15423 | ||
15424 | ||
15425 | /* Parse an option that takes the name of a processor as its argument. | |
15426 | OPTION is the name of the option and CPU_STRING is the argument. | |
15427 | Return the corresponding processor enumeration if the CPU_STRING is | |
15428 | recognized, otherwise report an error and return null. | |
15429 | ||
15430 | A similar function exists in GCC. */ | |
e7af610e NC |
15431 | |
15432 | static const struct mips_cpu_info * | |
17a2f251 | 15433 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 15434 | { |
316f5878 | 15435 | const struct mips_cpu_info *p; |
e7af610e | 15436 | |
316f5878 RS |
15437 | /* 'from-abi' selects the most compatible architecture for the given |
15438 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
15439 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
15440 | version. Look first at the -mgp options, if given, otherwise base | |
15441 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 15442 | |
316f5878 RS |
15443 | Treat NO_ABI like the EABIs. One reason to do this is that the |
15444 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
15445 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
15446 | 'mips64', just as we did in the days before 'from-abi'. */ | |
15447 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
15448 | { | |
15449 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
15450 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
15451 | ||
15452 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
15453 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
15454 | ||
15455 | if (file_mips_gp32 >= 0) | |
15456 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
15457 | ||
15458 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
15459 | ? ISA_MIPS3 | |
15460 | : ISA_MIPS1); | |
15461 | } | |
15462 | ||
15463 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
15464 | if (strcasecmp (cpu_string, "default") == 0) | |
15465 | return 0; | |
15466 | ||
15467 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
15468 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
15469 | return p; | |
15470 | ||
20203fb9 | 15471 | as_bad (_("Bad value (%s) for %s"), cpu_string, option); |
316f5878 | 15472 | return 0; |
e7af610e NC |
15473 | } |
15474 | ||
316f5878 RS |
15475 | /* Return the canonical processor information for ISA (a member of the |
15476 | ISA_MIPS* enumeration). */ | |
15477 | ||
e7af610e | 15478 | static const struct mips_cpu_info * |
17a2f251 | 15479 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
15480 | { |
15481 | int i; | |
15482 | ||
15483 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 15484 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 15485 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
15486 | return (&mips_cpu_info_table[i]); |
15487 | ||
e972090a | 15488 | return NULL; |
e7af610e | 15489 | } |
fef14a42 TS |
15490 | |
15491 | static const struct mips_cpu_info * | |
17a2f251 | 15492 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
15493 | { |
15494 | int i; | |
15495 | ||
15496 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
15497 | if (arch == mips_cpu_info_table[i].cpu) | |
15498 | return (&mips_cpu_info_table[i]); | |
15499 | ||
15500 | return NULL; | |
15501 | } | |
316f5878 RS |
15502 | \f |
15503 | static void | |
17a2f251 | 15504 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
15505 | { |
15506 | if (*first_p) | |
15507 | { | |
15508 | fprintf (stream, "%24s", ""); | |
15509 | *col_p = 24; | |
15510 | } | |
15511 | else | |
15512 | { | |
15513 | fprintf (stream, ", "); | |
15514 | *col_p += 2; | |
15515 | } | |
e7af610e | 15516 | |
316f5878 RS |
15517 | if (*col_p + strlen (string) > 72) |
15518 | { | |
15519 | fprintf (stream, "\n%24s", ""); | |
15520 | *col_p = 24; | |
15521 | } | |
15522 | ||
15523 | fprintf (stream, "%s", string); | |
15524 | *col_p += strlen (string); | |
15525 | ||
15526 | *first_p = 0; | |
15527 | } | |
15528 | ||
15529 | void | |
17a2f251 | 15530 | md_show_usage (FILE *stream) |
e7af610e | 15531 | { |
316f5878 RS |
15532 | int column, first; |
15533 | size_t i; | |
15534 | ||
15535 | fprintf (stream, _("\ | |
15536 | MIPS options:\n\ | |
316f5878 RS |
15537 | -EB generate big endian output\n\ |
15538 | -EL generate little endian output\n\ | |
15539 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
15540 | -G NUM allow referencing objects up to NUM bytes\n\ | |
15541 | implicitly with the gp register [default 8]\n")); | |
15542 | fprintf (stream, _("\ | |
15543 | -mips1 generate MIPS ISA I instructions\n\ | |
15544 | -mips2 generate MIPS ISA II instructions\n\ | |
15545 | -mips3 generate MIPS ISA III instructions\n\ | |
15546 | -mips4 generate MIPS ISA IV instructions\n\ | |
15547 | -mips5 generate MIPS ISA V instructions\n\ | |
15548 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 15549 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 | 15550 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 15551 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
316f5878 RS |
15552 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
15553 | ||
15554 | first = 1; | |
e7af610e NC |
15555 | |
15556 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
15557 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
15558 | show (stream, "from-abi", &column, &first); | |
15559 | fputc ('\n', stream); | |
e7af610e | 15560 | |
316f5878 RS |
15561 | fprintf (stream, _("\ |
15562 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
15563 | -no-mCPU don't generate code specific to CPU.\n\ | |
15564 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
15565 | ||
15566 | first = 1; | |
15567 | ||
15568 | show (stream, "3900", &column, &first); | |
15569 | show (stream, "4010", &column, &first); | |
15570 | show (stream, "4100", &column, &first); | |
15571 | show (stream, "4650", &column, &first); | |
15572 | fputc ('\n', stream); | |
15573 | ||
15574 | fprintf (stream, _("\ | |
15575 | -mips16 generate mips16 instructions\n\ | |
15576 | -no-mips16 do not generate mips16 instructions\n")); | |
15577 | fprintf (stream, _("\ | |
e16bfa71 TS |
15578 | -msmartmips generate smartmips instructions\n\ |
15579 | -mno-smartmips do not generate smartmips instructions\n")); | |
15580 | fprintf (stream, _("\ | |
74cd071d CF |
15581 | -mdsp generate DSP instructions\n\ |
15582 | -mno-dsp do not generate DSP instructions\n")); | |
15583 | fprintf (stream, _("\ | |
8b082fb1 TS |
15584 | -mdspr2 generate DSP R2 instructions\n\ |
15585 | -mno-dspr2 do not generate DSP R2 instructions\n")); | |
15586 | fprintf (stream, _("\ | |
ef2e4d86 CF |
15587 | -mmt generate MT instructions\n\ |
15588 | -mno-mt do not generate MT instructions\n")); | |
15589 | fprintf (stream, _("\ | |
c67a084a NC |
15590 | -mfix-loongson2f-jump work around Loongson2F JUMP instructions\n\ |
15591 | -mfix-loongson2f-nop work around Loongson2F NOP errata\n\ | |
d766e8ec | 15592 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 15593 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
6a32d874 | 15594 | -mfix-24k insert a nop after ERET and DERET instructions\n\ |
d954098f | 15595 | -mfix-cn63xxp1 work around CN63XXP1 PREF errata\n\ |
316f5878 RS |
15596 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
15597 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 | 15598 | -msym32 assume all symbols have 32-bit values\n\ |
316f5878 RS |
15599 | -O0 remove unneeded NOPs, do not swap branches\n\ |
15600 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
15601 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ |
15602 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
037b32b9 AN |
15603 | fprintf (stream, _("\ |
15604 | -mhard-float allow floating-point instructions\n\ | |
15605 | -msoft-float do not allow floating-point instructions\n\ | |
15606 | -msingle-float only allow 32-bit floating-point operations\n\ | |
15607 | -mdouble-float allow 32-bit and 64-bit floating-point operations\n\ | |
15608 | --[no-]construct-floats [dis]allow floating point values to be constructed\n" | |
15609 | )); | |
316f5878 RS |
15610 | #ifdef OBJ_ELF |
15611 | fprintf (stream, _("\ | |
15612 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
861fb55a | 15613 | -call_nonpic generate non-PIC code that can operate with DSOs\n\ |
0c000745 | 15614 | -mvxworks-pic generate VxWorks position independent code\n\ |
861fb55a | 15615 | -non_shared do not generate code that can operate with DSOs\n\ |
316f5878 | 15616 | -xgot assume a 32 bit GOT\n\ |
dcd410fe | 15617 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 | 15618 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
d821e36b | 15619 | position dependent (non shared) code\n\ |
316f5878 RS |
15620 | -mabi=ABI create ABI conformant object file for:\n")); |
15621 | ||
15622 | first = 1; | |
15623 | ||
15624 | show (stream, "32", &column, &first); | |
15625 | show (stream, "o64", &column, &first); | |
15626 | show (stream, "n32", &column, &first); | |
15627 | show (stream, "64", &column, &first); | |
15628 | show (stream, "eabi", &column, &first); | |
15629 | ||
15630 | fputc ('\n', stream); | |
15631 | ||
15632 | fprintf (stream, _("\ | |
15633 | -32 create o32 ABI object file (default)\n\ | |
15634 | -n32 create n32 ABI object file\n\ | |
15635 | -64 create 64 ABI object file\n")); | |
15636 | #endif | |
e7af610e | 15637 | } |
14e777e0 | 15638 | |
1575952e | 15639 | #ifdef TE_IRIX |
14e777e0 | 15640 | enum dwarf2_format |
413a266c | 15641 | mips_dwarf2_format (asection *sec ATTRIBUTE_UNUSED) |
14e777e0 | 15642 | { |
369943fe | 15643 | if (HAVE_64BIT_SYMBOLS) |
1575952e | 15644 | return dwarf2_format_64bit_irix; |
14e777e0 KB |
15645 | else |
15646 | return dwarf2_format_32bit; | |
15647 | } | |
1575952e | 15648 | #endif |
73369e65 EC |
15649 | |
15650 | int | |
15651 | mips_dwarf2_addr_size (void) | |
15652 | { | |
6b6b3450 | 15653 | if (HAVE_64BIT_OBJECTS) |
73369e65 | 15654 | return 8; |
73369e65 EC |
15655 | else |
15656 | return 4; | |
15657 | } | |
5862107c EC |
15658 | |
15659 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
15660 | void | |
15661 | mips_cfi_frame_initial_instructions (void) | |
15662 | { | |
15663 | cfi_add_CFA_def_cfa_register (SP); | |
15664 | } | |
15665 | ||
707bfff6 TS |
15666 | int |
15667 | tc_mips_regname_to_dw2regnum (char *regname) | |
15668 | { | |
15669 | unsigned int regnum = -1; | |
15670 | unsigned int reg; | |
15671 | ||
15672 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
15673 | regnum = reg; | |
15674 | ||
15675 | return regnum; | |
15676 | } |