Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-mips.c -- assemble code for a MIPS chip. |
81912461 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
e7c604dd | 3 | 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by the OSF and Ralph Campbell. |
5 | Written by Keith Knowles and Ralph Campbell, working independently. | |
6 | Modified for ECOFF and R4000 support by Ian Lance Taylor of Cygnus | |
7 | Support. | |
8 | ||
9 | This file is part of GAS. | |
10 | ||
11 | GAS is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 13 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
14 | any later version. |
15 | ||
16 | GAS is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
23 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
24 | 02110-1301, USA. */ | |
252b5132 RH |
25 | |
26 | #include "as.h" | |
27 | #include "config.h" | |
28 | #include "subsegs.h" | |
3882b010 | 29 | #include "safe-ctype.h" |
252b5132 | 30 | |
252b5132 RH |
31 | #include "opcode/mips.h" |
32 | #include "itbl-ops.h" | |
c5dd6aab | 33 | #include "dwarf2dbg.h" |
5862107c | 34 | #include "dw2gencfi.h" |
252b5132 RH |
35 | |
36 | #ifdef DEBUG | |
37 | #define DBG(x) printf x | |
38 | #else | |
39 | #define DBG(x) | |
40 | #endif | |
41 | ||
42 | #ifdef OBJ_MAYBE_ELF | |
43 | /* Clean up namespace so we can include obj-elf.h too. */ | |
17a2f251 TS |
44 | static int mips_output_flavor (void); |
45 | static int mips_output_flavor (void) { return OUTPUT_FLAVOR; } | |
252b5132 RH |
46 | #undef OBJ_PROCESS_STAB |
47 | #undef OUTPUT_FLAVOR | |
48 | #undef S_GET_ALIGN | |
49 | #undef S_GET_SIZE | |
50 | #undef S_SET_ALIGN | |
51 | #undef S_SET_SIZE | |
252b5132 RH |
52 | #undef obj_frob_file |
53 | #undef obj_frob_file_after_relocs | |
54 | #undef obj_frob_symbol | |
55 | #undef obj_pop_insert | |
56 | #undef obj_sec_sym_ok_for_reloc | |
57 | #undef OBJ_COPY_SYMBOL_ATTRIBUTES | |
58 | ||
59 | #include "obj-elf.h" | |
60 | /* Fix any of them that we actually care about. */ | |
61 | #undef OUTPUT_FLAVOR | |
62 | #define OUTPUT_FLAVOR mips_output_flavor() | |
63 | #endif | |
64 | ||
65 | #if defined (OBJ_ELF) | |
66 | #include "elf/mips.h" | |
67 | #endif | |
68 | ||
69 | #ifndef ECOFF_DEBUGGING | |
70 | #define NO_ECOFF_DEBUGGING | |
71 | #define ECOFF_DEBUGGING 0 | |
72 | #endif | |
73 | ||
ecb4347a DJ |
74 | int mips_flag_mdebug = -1; |
75 | ||
dcd410fe RO |
76 | /* Control generation of .pdr sections. Off by default on IRIX: the native |
77 | linker doesn't know about and discards them, but relocations against them | |
78 | remain, leading to rld crashes. */ | |
79 | #ifdef TE_IRIX | |
80 | int mips_flag_pdr = FALSE; | |
81 | #else | |
82 | int mips_flag_pdr = TRUE; | |
83 | #endif | |
84 | ||
252b5132 RH |
85 | #include "ecoff.h" |
86 | ||
87 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
88 | static char *mips_regmask_frag; | |
89 | #endif | |
90 | ||
85b51719 | 91 | #define ZERO 0 |
741fe287 | 92 | #define ATREG 1 |
252b5132 RH |
93 | #define TREG 24 |
94 | #define PIC_CALL_REG 25 | |
95 | #define KT0 26 | |
96 | #define KT1 27 | |
97 | #define GP 28 | |
98 | #define SP 29 | |
99 | #define FP 30 | |
100 | #define RA 31 | |
101 | ||
102 | #define ILLEGAL_REG (32) | |
103 | ||
741fe287 MR |
104 | #define AT mips_opts.at |
105 | ||
252b5132 RH |
106 | /* Allow override of standard little-endian ECOFF format. */ |
107 | ||
108 | #ifndef ECOFF_LITTLE_FORMAT | |
109 | #define ECOFF_LITTLE_FORMAT "ecoff-littlemips" | |
110 | #endif | |
111 | ||
112 | extern int target_big_endian; | |
113 | ||
252b5132 | 114 | /* The name of the readonly data section. */ |
4d0d148d | 115 | #define RDATA_SECTION_NAME (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ |
252b5132 | 116 | ? ".rdata" \ |
056350c6 NC |
117 | : OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
118 | ? ".rdata" \ | |
252b5132 RH |
119 | : OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
120 | ? ".rodata" \ | |
121 | : (abort (), "")) | |
122 | ||
47e39b9d RS |
123 | /* Information about an instruction, including its format, operands |
124 | and fixups. */ | |
125 | struct mips_cl_insn | |
126 | { | |
127 | /* The opcode's entry in mips_opcodes or mips16_opcodes. */ | |
128 | const struct mips_opcode *insn_mo; | |
129 | ||
130 | /* True if this is a mips16 instruction and if we want the extended | |
131 | form of INSN_MO. */ | |
132 | bfd_boolean use_extend; | |
133 | ||
134 | /* The 16-bit extension instruction to use when USE_EXTEND is true. */ | |
135 | unsigned short extend; | |
136 | ||
137 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is | |
138 | a copy of INSN_MO->match with the operands filled in. */ | |
139 | unsigned long insn_opcode; | |
140 | ||
141 | /* The frag that contains the instruction. */ | |
142 | struct frag *frag; | |
143 | ||
144 | /* The offset into FRAG of the first instruction byte. */ | |
145 | long where; | |
146 | ||
147 | /* The relocs associated with the instruction, if any. */ | |
148 | fixS *fixp[3]; | |
149 | ||
a38419a5 RS |
150 | /* True if this entry cannot be moved from its current position. */ |
151 | unsigned int fixed_p : 1; | |
47e39b9d | 152 | |
708587a4 | 153 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
154 | unsigned int noreorder_p : 1; |
155 | ||
2fa15973 RS |
156 | /* True for mips16 instructions that jump to an absolute address. */ |
157 | unsigned int mips16_absolute_jump_p : 1; | |
47e39b9d RS |
158 | }; |
159 | ||
a325df1d TS |
160 | /* The ABI to use. */ |
161 | enum mips_abi_level | |
162 | { | |
163 | NO_ABI = 0, | |
164 | O32_ABI, | |
165 | O64_ABI, | |
166 | N32_ABI, | |
167 | N64_ABI, | |
168 | EABI_ABI | |
169 | }; | |
170 | ||
171 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 172 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 173 | |
143d77c5 EC |
174 | /* Whether or not we have code that can call pic code. */ |
175 | int mips_abicalls = FALSE; | |
176 | ||
aa6975fb ILT |
177 | /* Whether or not we have code which can be put into a shared |
178 | library. */ | |
179 | static bfd_boolean mips_in_shared = TRUE; | |
180 | ||
252b5132 RH |
181 | /* This is the set of options which may be modified by the .set |
182 | pseudo-op. We use a struct so that .set push and .set pop are more | |
183 | reliable. */ | |
184 | ||
e972090a NC |
185 | struct mips_set_options |
186 | { | |
252b5132 RH |
187 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
188 | if it has not been initialized. Changed by `.set mipsN', and the | |
189 | -mipsN command line option, and the default CPU. */ | |
190 | int isa; | |
1f25f5d3 CD |
191 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
192 | if they have not been initialized. Changed by `.set <asename>', by | |
193 | command line options, and based on the default architecture. */ | |
194 | int ase_mips3d; | |
deec1734 | 195 | int ase_mdmx; |
e16bfa71 | 196 | int ase_smartmips; |
74cd071d | 197 | int ase_dsp; |
8b082fb1 | 198 | int ase_dspr2; |
ef2e4d86 | 199 | int ase_mt; |
252b5132 RH |
200 | /* Whether we are assembling for the mips16 processor. 0 if we are |
201 | not, 1 if we are, and -1 if the value has not been initialized. | |
202 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
203 | -nomips16 command line options, and the default CPU. */ | |
204 | int mips16; | |
205 | /* Non-zero if we should not reorder instructions. Changed by `.set | |
206 | reorder' and `.set noreorder'. */ | |
207 | int noreorder; | |
741fe287 MR |
208 | /* Non-zero if we should not permit the register designated "assembler |
209 | temporary" to be used in instructions. The value is the register | |
210 | number, normally $at ($1). Changed by `.set at=REG', `.set noat' | |
211 | (same as `.set at=$0') and `.set at' (same as `.set at=$1'). */ | |
212 | unsigned int at; | |
252b5132 RH |
213 | /* Non-zero if we should warn when a macro instruction expands into |
214 | more than one machine instruction. Changed by `.set nomacro' and | |
215 | `.set macro'. */ | |
216 | int warn_about_macros; | |
217 | /* Non-zero if we should not move instructions. Changed by `.set | |
218 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
219 | int nomove; | |
220 | /* Non-zero if we should not optimize branches by moving the target | |
221 | of the branch into the delay slot. Actually, we don't perform | |
222 | this optimization anyhow. Changed by `.set bopt' and `.set | |
223 | nobopt'. */ | |
224 | int nobopt; | |
225 | /* Non-zero if we should not autoextend mips16 instructions. | |
226 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
227 | int noautoextend; | |
a325df1d TS |
228 | /* Restrict general purpose registers and floating point registers |
229 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
230 | is passed but can changed if the assembler code uses .set mipsN. */ | |
231 | int gp32; | |
232 | int fp32; | |
fef14a42 TS |
233 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
234 | command line option, and the default CPU. */ | |
235 | int arch; | |
aed1a261 RS |
236 | /* True if ".set sym32" is in effect. */ |
237 | bfd_boolean sym32; | |
037b32b9 AN |
238 | /* True if floating-point operations are not allowed. Changed by .set |
239 | softfloat or .set hardfloat, by command line options -msoft-float or | |
240 | -mhard-float. The default is false. */ | |
241 | bfd_boolean soft_float; | |
242 | ||
243 | /* True if only single-precision floating-point operations are allowed. | |
244 | Changed by .set singlefloat or .set doublefloat, command-line options | |
245 | -msingle-float or -mdouble-float. The default is false. */ | |
246 | bfd_boolean single_float; | |
252b5132 RH |
247 | }; |
248 | ||
037b32b9 AN |
249 | /* This is the struct we use to hold the current set of options. Note |
250 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to | |
251 | -1 to indicate that they have not been initialized. */ | |
252 | ||
a325df1d | 253 | /* True if -mgp32 was passed. */ |
a8e8e863 | 254 | static int file_mips_gp32 = -1; |
a325df1d TS |
255 | |
256 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 257 | static int file_mips_fp32 = -1; |
a325df1d | 258 | |
037b32b9 AN |
259 | /* 1 if -msoft-float, 0 if -mhard-float. The default is 0. */ |
260 | static int file_mips_soft_float = 0; | |
261 | ||
262 | /* 1 if -msingle-float, 0 if -mdouble-float. The default is 0. */ | |
263 | static int file_mips_single_float = 0; | |
252b5132 | 264 | |
e972090a NC |
265 | static struct mips_set_options mips_opts = |
266 | { | |
037b32b9 AN |
267 | /* isa */ ISA_UNKNOWN, /* ase_mips3d */ -1, /* ase_mdmx */ -1, |
268 | /* ase_smartmips */ 0, /* ase_dsp */ -1, /* ase_dspr2 */ -1, /* ase_mt */ -1, | |
269 | /* mips16 */ -1, /* noreorder */ 0, /* at */ ATREG, | |
270 | /* warn_about_macros */ 0, /* nomove */ 0, /* nobopt */ 0, | |
271 | /* noautoextend */ 0, /* gp32 */ 0, /* fp32 */ 0, /* arch */ CPU_UNKNOWN, | |
272 | /* sym32 */ FALSE, /* soft_float */ FALSE, /* single_float */ FALSE | |
e7af610e | 273 | }; |
252b5132 RH |
274 | |
275 | /* These variables are filled in with the masks of registers used. | |
276 | The object format code reads them and puts them in the appropriate | |
277 | place. */ | |
278 | unsigned long mips_gprmask; | |
279 | unsigned long mips_cprmask[4]; | |
280 | ||
281 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 282 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 283 | |
a4672219 TS |
284 | /* True if -mips16 was passed or implied by arguments passed on the |
285 | command line (e.g., by -march). */ | |
286 | static int file_ase_mips16; | |
287 | ||
3994f87e TS |
288 | #define ISA_SUPPORTS_MIPS16E (mips_opts.isa == ISA_MIPS32 \ |
289 | || mips_opts.isa == ISA_MIPS32R2 \ | |
290 | || mips_opts.isa == ISA_MIPS64 \ | |
291 | || mips_opts.isa == ISA_MIPS64R2) | |
292 | ||
1f25f5d3 CD |
293 | /* True if -mips3d was passed or implied by arguments passed on the |
294 | command line (e.g., by -march). */ | |
295 | static int file_ase_mips3d; | |
296 | ||
deec1734 CD |
297 | /* True if -mdmx was passed or implied by arguments passed on the |
298 | command line (e.g., by -march). */ | |
299 | static int file_ase_mdmx; | |
300 | ||
e16bfa71 TS |
301 | /* True if -msmartmips was passed or implied by arguments passed on the |
302 | command line (e.g., by -march). */ | |
303 | static int file_ase_smartmips; | |
304 | ||
ad3fea08 TS |
305 | #define ISA_SUPPORTS_SMARTMIPS (mips_opts.isa == ISA_MIPS32 \ |
306 | || mips_opts.isa == ISA_MIPS32R2) | |
e16bfa71 | 307 | |
74cd071d CF |
308 | /* True if -mdsp was passed or implied by arguments passed on the |
309 | command line (e.g., by -march). */ | |
310 | static int file_ase_dsp; | |
311 | ||
ad3fea08 TS |
312 | #define ISA_SUPPORTS_DSP_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
313 | || mips_opts.isa == ISA_MIPS64R2) | |
314 | ||
65263ce3 TS |
315 | #define ISA_SUPPORTS_DSP64_ASE (mips_opts.isa == ISA_MIPS64R2) |
316 | ||
8b082fb1 TS |
317 | /* True if -mdspr2 was passed or implied by arguments passed on the |
318 | command line (e.g., by -march). */ | |
319 | static int file_ase_dspr2; | |
320 | ||
321 | #define ISA_SUPPORTS_DSPR2_ASE (mips_opts.isa == ISA_MIPS32R2 \ | |
322 | || mips_opts.isa == ISA_MIPS64R2) | |
323 | ||
ef2e4d86 CF |
324 | /* True if -mmt was passed or implied by arguments passed on the |
325 | command line (e.g., by -march). */ | |
326 | static int file_ase_mt; | |
327 | ||
ad3fea08 TS |
328 | #define ISA_SUPPORTS_MT_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
329 | || mips_opts.isa == ISA_MIPS64R2) | |
330 | ||
ec68c924 | 331 | /* The argument of the -march= flag. The architecture we are assembling. */ |
fef14a42 | 332 | static int file_mips_arch = CPU_UNKNOWN; |
316f5878 | 333 | static const char *mips_arch_string; |
ec68c924 EC |
334 | |
335 | /* The argument of the -mtune= flag. The architecture for which we | |
336 | are optimizing. */ | |
337 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 338 | static const char *mips_tune_string; |
ec68c924 | 339 | |
316f5878 | 340 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
341 | static int mips_32bitmode = 0; |
342 | ||
316f5878 RS |
343 | /* True if the given ABI requires 32-bit registers. */ |
344 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
345 | ||
346 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
347 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
348 | ((ABI) == N32_ABI \ | |
349 | || (ABI) == N64_ABI \ | |
316f5878 RS |
350 | || (ABI) == O64_ABI) |
351 | ||
ad3fea08 | 352 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
353 | #define ISA_HAS_64BIT_REGS(ISA) \ |
354 | ((ISA) == ISA_MIPS3 \ | |
355 | || (ISA) == ISA_MIPS4 \ | |
356 | || (ISA) == ISA_MIPS5 \ | |
357 | || (ISA) == ISA_MIPS64 \ | |
358 | || (ISA) == ISA_MIPS64R2) | |
9ce8a5dd | 359 | |
ad3fea08 TS |
360 | /* Return true if ISA supports 64 bit wide float registers. */ |
361 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
362 | ((ISA) == ISA_MIPS3 \ | |
363 | || (ISA) == ISA_MIPS4 \ | |
364 | || (ISA) == ISA_MIPS5 \ | |
365 | || (ISA) == ISA_MIPS32R2 \ | |
366 | || (ISA) == ISA_MIPS64 \ | |
367 | || (ISA) == ISA_MIPS64R2) | |
368 | ||
af7ee8bf CD |
369 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
370 | instructions. */ | |
707bfff6 TS |
371 | #define ISA_HAS_DROR(ISA) \ |
372 | ((ISA) == ISA_MIPS64R2) | |
af7ee8bf CD |
373 | |
374 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
375 | instructions. */ | |
707bfff6 TS |
376 | #define ISA_HAS_ROR(ISA) \ |
377 | ((ISA) == ISA_MIPS32R2 \ | |
378 | || (ISA) == ISA_MIPS64R2 \ | |
379 | || mips_opts.ase_smartmips) | |
380 | ||
7455baf8 TS |
381 | /* Return true if ISA supports single-precision floats in odd registers. */ |
382 | #define ISA_HAS_ODD_SINGLE_FPR(ISA) \ | |
383 | ((ISA) == ISA_MIPS32 \ | |
384 | || (ISA) == ISA_MIPS32R2 \ | |
385 | || (ISA) == ISA_MIPS64 \ | |
386 | || (ISA) == ISA_MIPS64R2) | |
af7ee8bf | 387 | |
ad3fea08 TS |
388 | /* Return true if ISA supports move to/from high part of a 64-bit |
389 | floating-point register. */ | |
390 | #define ISA_HAS_MXHC1(ISA) \ | |
391 | ((ISA) == ISA_MIPS32R2 \ | |
392 | || (ISA) == ISA_MIPS64R2) | |
393 | ||
e013f690 | 394 | #define HAVE_32BIT_GPRS \ |
ad3fea08 | 395 | (mips_opts.gp32 || !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 396 | |
e013f690 | 397 | #define HAVE_32BIT_FPRS \ |
ad3fea08 | 398 | (mips_opts.fp32 || !ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
ca4e0257 | 399 | |
ad3fea08 TS |
400 | #define HAVE_64BIT_GPRS (!HAVE_32BIT_GPRS) |
401 | #define HAVE_64BIT_FPRS (!HAVE_32BIT_FPRS) | |
ca4e0257 | 402 | |
316f5878 | 403 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 404 | |
316f5878 | 405 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 406 | |
3b91255e RS |
407 | /* True if relocations are stored in-place. */ |
408 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
409 | ||
aed1a261 RS |
410 | /* The ABI-derived address size. */ |
411 | #define HAVE_64BIT_ADDRESSES \ | |
412 | (HAVE_64BIT_GPRS && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) | |
413 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) | |
e013f690 | 414 | |
aed1a261 RS |
415 | /* The size of symbolic constants (i.e., expressions of the form |
416 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
417 | #define HAVE_32BIT_SYMBOLS \ | |
418 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
419 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 420 | |
b7c7d6c1 TS |
421 | /* Addresses are loaded in different ways, depending on the address size |
422 | in use. The n32 ABI Documentation also mandates the use of additions | |
423 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 424 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 425 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
426 | |
427 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 428 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
429 | |
430 | #define ADDRESS_LOAD_INSN \ | |
431 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
432 | ||
433 | #define ADDRESS_STORE_INSN \ | |
434 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
435 | ||
a4672219 | 436 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
437 | #define CPU_HAS_MIPS16(cpu) \ |
438 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
439 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 440 | |
60b63b72 RS |
441 | /* True if CPU has a dror instruction. */ |
442 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
443 | ||
444 | /* True if CPU has a ror instruction. */ | |
445 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
446 | ||
dd3cbb7e NC |
447 | /* True if CPU has seq/sne and seqi/snei instructions. */ |
448 | #define CPU_HAS_SEQ(CPU) ((CPU) == CPU_OCTEON) | |
449 | ||
b19e8a9b AN |
450 | /* True if CPU does not implement the all the coprocessor insns. For these |
451 | CPUs only those COP insns are accepted that are explicitly marked to be | |
452 | available on the CPU. ISA membership for COP insns is ignored. */ | |
453 | #define NO_ISA_COP(CPU) ((CPU) == CPU_OCTEON) | |
454 | ||
c8978940 CD |
455 | /* True if mflo and mfhi can be immediately followed by instructions |
456 | which write to the HI and LO registers. | |
457 | ||
458 | According to MIPS specifications, MIPS ISAs I, II, and III need | |
459 | (at least) two instructions between the reads of HI/LO and | |
460 | instructions which write them, and later ISAs do not. Contradicting | |
461 | the MIPS specifications, some MIPS IV processor user manuals (e.g. | |
462 | the UM for the NEC Vr5000) document needing the instructions between | |
463 | HI/LO reads and writes, as well. Therefore, we declare only MIPS32, | |
464 | MIPS64 and later ISAs to have the interlocks, plus any specific | |
465 | earlier-ISA CPUs for which CPU documentation declares that the | |
466 | instructions are really interlocked. */ | |
467 | #define hilo_interlocks \ | |
468 | (mips_opts.isa == ISA_MIPS32 \ | |
469 | || mips_opts.isa == ISA_MIPS32R2 \ | |
470 | || mips_opts.isa == ISA_MIPS64 \ | |
471 | || mips_opts.isa == ISA_MIPS64R2 \ | |
472 | || mips_opts.arch == CPU_R4010 \ | |
473 | || mips_opts.arch == CPU_R10000 \ | |
474 | || mips_opts.arch == CPU_R12000 \ | |
3aa3176b TS |
475 | || mips_opts.arch == CPU_R14000 \ |
476 | || mips_opts.arch == CPU_R16000 \ | |
c8978940 | 477 | || mips_opts.arch == CPU_RM7000 \ |
c8978940 CD |
478 | || mips_opts.arch == CPU_VR5500 \ |
479 | ) | |
252b5132 RH |
480 | |
481 | /* Whether the processor uses hardware interlocks to protect reads | |
81912461 ILT |
482 | from the GPRs after they are loaded from memory, and thus does not |
483 | require nops to be inserted. This applies to instructions marked | |
484 | INSN_LOAD_MEMORY_DELAY. These nops are only required at MIPS ISA | |
485 | level I. */ | |
252b5132 | 486 | #define gpr_interlocks \ |
e7af610e | 487 | (mips_opts.isa != ISA_MIPS1 \ |
fef14a42 | 488 | || mips_opts.arch == CPU_R3900) |
252b5132 | 489 | |
81912461 ILT |
490 | /* Whether the processor uses hardware interlocks to avoid delays |
491 | required by coprocessor instructions, and thus does not require | |
492 | nops to be inserted. This applies to instructions marked | |
493 | INSN_LOAD_COPROC_DELAY, INSN_COPROC_MOVE_DELAY, and to delays | |
494 | between instructions marked INSN_WRITE_COND_CODE and ones marked | |
495 | INSN_READ_COND_CODE. These nops are only required at MIPS ISA | |
496 | levels I, II, and III. */ | |
bdaaa2e1 | 497 | /* Itbl support may require additional care here. */ |
81912461 ILT |
498 | #define cop_interlocks \ |
499 | ((mips_opts.isa != ISA_MIPS1 \ | |
500 | && mips_opts.isa != ISA_MIPS2 \ | |
501 | && mips_opts.isa != ISA_MIPS3) \ | |
502 | || mips_opts.arch == CPU_R4300 \ | |
81912461 ILT |
503 | ) |
504 | ||
505 | /* Whether the processor uses hardware interlocks to protect reads | |
506 | from coprocessor registers after they are loaded from memory, and | |
507 | thus does not require nops to be inserted. This applies to | |
508 | instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only | |
509 | requires at MIPS ISA level I. */ | |
510 | #define cop_mem_interlocks (mips_opts.isa != ISA_MIPS1) | |
252b5132 | 511 | |
6b76fefe CM |
512 | /* Is this a mfhi or mflo instruction? */ |
513 | #define MF_HILO_INSN(PINFO) \ | |
b19e8a9b AN |
514 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) |
515 | ||
516 | /* Returns true for a (non floating-point) coprocessor instruction. Reading | |
517 | or writing the condition code is only possible on the coprocessors and | |
518 | these insns are not marked with INSN_COP. Thus for these insns use the | |
a242dc0d | 519 | condition-code flags. */ |
b19e8a9b AN |
520 | #define COP_INSN(PINFO) \ |
521 | (PINFO != INSN_MACRO \ | |
a242dc0d AN |
522 | && ((PINFO) & (FP_S | FP_D)) == 0 \ |
523 | && ((PINFO) & (INSN_COP | INSN_READ_COND_CODE | INSN_WRITE_COND_CODE))) | |
6b76fefe | 524 | |
252b5132 RH |
525 | /* MIPS PIC level. */ |
526 | ||
a161fe53 | 527 | enum mips_pic_level mips_pic; |
252b5132 | 528 | |
c9914766 | 529 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 530 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 531 | static int mips_big_got = 0; |
252b5132 RH |
532 | |
533 | /* 1 if trap instructions should used for overflow rather than break | |
534 | instructions. */ | |
c9914766 | 535 | static int mips_trap = 0; |
252b5132 | 536 | |
119d663a | 537 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 538 | by assembling two single width halves into two single width floating |
119d663a NC |
539 | point registers which just happen to alias the double width destination |
540 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 541 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
542 | automatically at assemble time. */ |
543 | static int mips_disable_float_construction; | |
544 | ||
252b5132 RH |
545 | /* Non-zero if any .set noreorder directives were used. */ |
546 | ||
547 | static int mips_any_noreorder; | |
548 | ||
6b76fefe CM |
549 | /* Non-zero if nops should be inserted when the register referenced in |
550 | an mfhi/mflo instruction is read in the next two instructions. */ | |
551 | static int mips_7000_hilo_fix; | |
552 | ||
02ffd3e4 | 553 | /* The size of objects in the small data section. */ |
156c2f8b | 554 | static unsigned int g_switch_value = 8; |
252b5132 RH |
555 | /* Whether the -G option was used. */ |
556 | static int g_switch_seen = 0; | |
557 | ||
558 | #define N_RMASK 0xc4 | |
559 | #define N_VFP 0xd4 | |
560 | ||
561 | /* If we can determine in advance that GP optimization won't be | |
562 | possible, we can skip the relaxation stuff that tries to produce | |
563 | GP-relative references. This makes delay slot optimization work | |
564 | better. | |
565 | ||
566 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
567 | gcc output. It needs to guess right for gcc, otherwise gcc |
568 | will put what it thinks is a GP-relative instruction in a branch | |
569 | delay slot. | |
252b5132 RH |
570 | |
571 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
572 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 573 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
574 | |
575 | /* handle of the OPCODE hash table */ | |
576 | static struct hash_control *op_hash = NULL; | |
577 | ||
578 | /* The opcode hash table we use for the mips16. */ | |
579 | static struct hash_control *mips16_op_hash = NULL; | |
580 | ||
581 | /* This array holds the chars that always start a comment. If the | |
582 | pre-processor is disabled, these aren't very useful */ | |
583 | const char comment_chars[] = "#"; | |
584 | ||
585 | /* This array holds the chars that only start a comment at the beginning of | |
586 | a line. If the line seems to have the form '# 123 filename' | |
587 | .line and .file directives will appear in the pre-processed output */ | |
588 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
589 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 590 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
591 | /* Also note that C style comments are always supported. */ |
592 | const char line_comment_chars[] = "#"; | |
593 | ||
bdaaa2e1 | 594 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 595 | const char line_separator_chars[] = ";"; |
252b5132 RH |
596 | |
597 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
598 | const char EXP_CHARS[] = "eE"; | |
599 | ||
600 | /* Chars that mean this number is a floating point constant */ | |
601 | /* As in 0f12.456 */ | |
602 | /* or 0d1.2345e12 */ | |
603 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
604 | ||
605 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
606 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
607 | but nothing is ideal around here. | |
608 | */ | |
609 | ||
610 | static char *insn_error; | |
611 | ||
612 | static int auto_align = 1; | |
613 | ||
614 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
615 | offset in the stack frame from which to restore the $gp register. | |
616 | This is set by the .cprestore pseudo-op, and saved in this | |
617 | variable. */ | |
618 | static offsetT mips_cprestore_offset = -1; | |
619 | ||
67c1ffbe | 620 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 621 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 622 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
623 | static offsetT mips_cpreturn_offset = -1; |
624 | static int mips_cpreturn_register = -1; | |
625 | static int mips_gp_register = GP; | |
def2e0dd | 626 | static int mips_gprel_offset = 0; |
6478892d | 627 | |
7a621144 DJ |
628 | /* Whether mips_cprestore_offset has been set in the current function |
629 | (or whether it has already been warned about, if not). */ | |
630 | static int mips_cprestore_valid = 0; | |
631 | ||
252b5132 RH |
632 | /* This is the register which holds the stack frame, as set by the |
633 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
634 | static int mips_frame_reg = SP; | |
635 | ||
7a621144 DJ |
636 | /* Whether mips_frame_reg has been set in the current function |
637 | (or whether it has already been warned about, if not). */ | |
638 | static int mips_frame_reg_valid = 0; | |
639 | ||
252b5132 RH |
640 | /* To output NOP instructions correctly, we need to keep information |
641 | about the previous two instructions. */ | |
642 | ||
643 | /* Whether we are optimizing. The default value of 2 means to remove | |
644 | unneeded NOPs and swap branch instructions when possible. A value | |
645 | of 1 means to not swap branches. A value of 0 means to always | |
646 | insert NOPs. */ | |
647 | static int mips_optimize = 2; | |
648 | ||
649 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
650 | equivalent to seeing no -g option at all. */ | |
651 | static int mips_debug = 0; | |
652 | ||
7d8e00cf RS |
653 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
654 | #define MAX_VR4130_NOPS 4 | |
655 | ||
656 | /* The maximum number of NOPs needed to fill delay slots. */ | |
657 | #define MAX_DELAY_NOPS 2 | |
658 | ||
659 | /* The maximum number of NOPs needed for any purpose. */ | |
660 | #define MAX_NOPS 4 | |
71400594 RS |
661 | |
662 | /* A list of previous instructions, with index 0 being the most recent. | |
663 | We need to look back MAX_NOPS instructions when filling delay slots | |
664 | or working around processor errata. We need to look back one | |
665 | instruction further if we're thinking about using history[0] to | |
666 | fill a branch delay slot. */ | |
667 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 668 | |
1e915849 RS |
669 | /* Nop instructions used by emit_nop. */ |
670 | static struct mips_cl_insn nop_insn, mips16_nop_insn; | |
671 | ||
672 | /* The appropriate nop for the current mode. */ | |
673 | #define NOP_INSN (mips_opts.mips16 ? &mips16_nop_insn : &nop_insn) | |
252b5132 | 674 | |
252b5132 RH |
675 | /* If this is set, it points to a frag holding nop instructions which |
676 | were inserted before the start of a noreorder section. If those | |
677 | nops turn out to be unnecessary, the size of the frag can be | |
678 | decreased. */ | |
679 | static fragS *prev_nop_frag; | |
680 | ||
681 | /* The number of nop instructions we created in prev_nop_frag. */ | |
682 | static int prev_nop_frag_holds; | |
683 | ||
684 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 685 | prev_nop_frag. */ |
252b5132 RH |
686 | static int prev_nop_frag_required; |
687 | ||
688 | /* The number of instructions we've seen since prev_nop_frag. */ | |
689 | static int prev_nop_frag_since; | |
690 | ||
691 | /* For ECOFF and ELF, relocations against symbols are done in two | |
692 | parts, with a HI relocation and a LO relocation. Each relocation | |
693 | has only 16 bits of space to store an addend. This means that in | |
694 | order for the linker to handle carries correctly, it must be able | |
695 | to locate both the HI and the LO relocation. This means that the | |
696 | relocations must appear in order in the relocation table. | |
697 | ||
698 | In order to implement this, we keep track of each unmatched HI | |
699 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 700 | corresponding LO relocation. */ |
252b5132 | 701 | |
e972090a NC |
702 | struct mips_hi_fixup |
703 | { | |
252b5132 RH |
704 | /* Next HI fixup. */ |
705 | struct mips_hi_fixup *next; | |
706 | /* This fixup. */ | |
707 | fixS *fixp; | |
708 | /* The section this fixup is in. */ | |
709 | segT seg; | |
710 | }; | |
711 | ||
712 | /* The list of unmatched HI relocs. */ | |
713 | ||
714 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
715 | ||
64bdfcaf RS |
716 | /* The frag containing the last explicit relocation operator. |
717 | Null if explicit relocations have not been used. */ | |
718 | ||
719 | static fragS *prev_reloc_op_frag; | |
720 | ||
252b5132 RH |
721 | /* Map normal MIPS register numbers to mips16 register numbers. */ |
722 | ||
723 | #define X ILLEGAL_REG | |
e972090a NC |
724 | static const int mips32_to_16_reg_map[] = |
725 | { | |
252b5132 RH |
726 | X, X, 2, 3, 4, 5, 6, 7, |
727 | X, X, X, X, X, X, X, X, | |
728 | 0, 1, X, X, X, X, X, X, | |
729 | X, X, X, X, X, X, X, X | |
730 | }; | |
731 | #undef X | |
732 | ||
733 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
734 | ||
e972090a NC |
735 | static const unsigned int mips16_to_32_reg_map[] = |
736 | { | |
252b5132 RH |
737 | 16, 17, 2, 3, 4, 5, 6, 7 |
738 | }; | |
60b63b72 | 739 | |
71400594 RS |
740 | /* Classifies the kind of instructions we're interested in when |
741 | implementing -mfix-vr4120. */ | |
742 | enum fix_vr4120_class { | |
743 | FIX_VR4120_MACC, | |
744 | FIX_VR4120_DMACC, | |
745 | FIX_VR4120_MULT, | |
746 | FIX_VR4120_DMULT, | |
747 | FIX_VR4120_DIV, | |
748 | FIX_VR4120_MTHILO, | |
749 | NUM_FIX_VR4120_CLASSES | |
750 | }; | |
751 | ||
752 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if | |
753 | there must be at least one other instruction between an instruction | |
754 | of type X and an instruction of type Y. */ | |
755 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
756 | ||
757 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 758 | static int mips_fix_vr4120; |
4a6a3df4 | 759 | |
7d8e00cf RS |
760 | /* ...likewise -mfix-vr4130. */ |
761 | static int mips_fix_vr4130; | |
762 | ||
4a6a3df4 AO |
763 | /* We don't relax branches by default, since this causes us to expand |
764 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
765 | fail to compute the offset before expanding the macro to the most | |
766 | efficient expansion. */ | |
767 | ||
768 | static int mips_relax_branch; | |
252b5132 | 769 | \f |
4d7206a2 RS |
770 | /* The expansion of many macros depends on the type of symbol that |
771 | they refer to. For example, when generating position-dependent code, | |
772 | a macro that refers to a symbol may have two different expansions, | |
773 | one which uses GP-relative addresses and one which uses absolute | |
774 | addresses. When generating SVR4-style PIC, a macro may have | |
775 | different expansions for local and global symbols. | |
776 | ||
777 | We handle these situations by generating both sequences and putting | |
778 | them in variant frags. In position-dependent code, the first sequence | |
779 | will be the GP-relative one and the second sequence will be the | |
780 | absolute one. In SVR4 PIC, the first sequence will be for global | |
781 | symbols and the second will be for local symbols. | |
782 | ||
584892a6 RS |
783 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
784 | SECOND are the lengths of the two sequences in bytes. These fields | |
785 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
786 | the subtype has the following flags: | |
4d7206a2 | 787 | |
584892a6 RS |
788 | RELAX_USE_SECOND |
789 | Set if it has been decided that we should use the second | |
790 | sequence instead of the first. | |
791 | ||
792 | RELAX_SECOND_LONGER | |
793 | Set in the first variant frag if the macro's second implementation | |
794 | is longer than its first. This refers to the macro as a whole, | |
795 | not an individual relaxation. | |
796 | ||
797 | RELAX_NOMACRO | |
798 | Set in the first variant frag if the macro appeared in a .set nomacro | |
799 | block and if one alternative requires a warning but the other does not. | |
800 | ||
801 | RELAX_DELAY_SLOT | |
802 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
803 | delay slot. | |
4d7206a2 RS |
804 | |
805 | The frag's "opcode" points to the first fixup for relaxable code. | |
806 | ||
807 | Relaxable macros are generated using a sequence such as: | |
808 | ||
809 | relax_start (SYMBOL); | |
810 | ... generate first expansion ... | |
811 | relax_switch (); | |
812 | ... generate second expansion ... | |
813 | relax_end (); | |
814 | ||
815 | The code and fixups for the unwanted alternative are discarded | |
816 | by md_convert_frag. */ | |
584892a6 | 817 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 818 | |
584892a6 RS |
819 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
820 | #define RELAX_SECOND(X) ((X) & 0xff) | |
821 | #define RELAX_USE_SECOND 0x10000 | |
822 | #define RELAX_SECOND_LONGER 0x20000 | |
823 | #define RELAX_NOMACRO 0x40000 | |
824 | #define RELAX_DELAY_SLOT 0x80000 | |
252b5132 | 825 | |
4a6a3df4 AO |
826 | /* Branch without likely bit. If label is out of range, we turn: |
827 | ||
828 | beq reg1, reg2, label | |
829 | delay slot | |
830 | ||
831 | into | |
832 | ||
833 | bne reg1, reg2, 0f | |
834 | nop | |
835 | j label | |
836 | 0: delay slot | |
837 | ||
838 | with the following opcode replacements: | |
839 | ||
840 | beq <-> bne | |
841 | blez <-> bgtz | |
842 | bltz <-> bgez | |
843 | bc1f <-> bc1t | |
844 | ||
845 | bltzal <-> bgezal (with jal label instead of j label) | |
846 | ||
847 | Even though keeping the delay slot instruction in the delay slot of | |
848 | the branch would be more efficient, it would be very tricky to do | |
849 | correctly, because we'd have to introduce a variable frag *after* | |
850 | the delay slot instruction, and expand that instead. Let's do it | |
851 | the easy way for now, even if the branch-not-taken case now costs | |
852 | one additional instruction. Out-of-range branches are not supposed | |
853 | to be common, anyway. | |
854 | ||
855 | Branch likely. If label is out of range, we turn: | |
856 | ||
857 | beql reg1, reg2, label | |
858 | delay slot (annulled if branch not taken) | |
859 | ||
860 | into | |
861 | ||
862 | beql reg1, reg2, 1f | |
863 | nop | |
864 | beql $0, $0, 2f | |
865 | nop | |
866 | 1: j[al] label | |
867 | delay slot (executed only if branch taken) | |
868 | 2: | |
869 | ||
870 | It would be possible to generate a shorter sequence by losing the | |
871 | likely bit, generating something like: | |
b34976b6 | 872 | |
4a6a3df4 AO |
873 | bne reg1, reg2, 0f |
874 | nop | |
875 | j[al] label | |
876 | delay slot (executed only if branch taken) | |
877 | 0: | |
878 | ||
879 | beql -> bne | |
880 | bnel -> beq | |
881 | blezl -> bgtz | |
882 | bgtzl -> blez | |
883 | bltzl -> bgez | |
884 | bgezl -> bltz | |
885 | bc1fl -> bc1t | |
886 | bc1tl -> bc1f | |
887 | ||
888 | bltzall -> bgezal (with jal label instead of j label) | |
889 | bgezall -> bltzal (ditto) | |
890 | ||
891 | ||
892 | but it's not clear that it would actually improve performance. */ | |
af6ae2ad | 893 | #define RELAX_BRANCH_ENCODE(uncond, likely, link, toofar) \ |
4a6a3df4 AO |
894 | ((relax_substateT) \ |
895 | (0xc0000000 \ | |
896 | | ((toofar) ? 1 : 0) \ | |
897 | | ((link) ? 2 : 0) \ | |
898 | | ((likely) ? 4 : 0) \ | |
af6ae2ad | 899 | | ((uncond) ? 8 : 0))) |
4a6a3df4 | 900 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
4a6a3df4 AO |
901 | #define RELAX_BRANCH_UNCOND(i) (((i) & 8) != 0) |
902 | #define RELAX_BRANCH_LIKELY(i) (((i) & 4) != 0) | |
903 | #define RELAX_BRANCH_LINK(i) (((i) & 2) != 0) | |
ae6063d4 | 904 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 1) != 0) |
4a6a3df4 | 905 | |
252b5132 RH |
906 | /* For mips16 code, we use an entirely different form of relaxation. |
907 | mips16 supports two versions of most instructions which take | |
908 | immediate values: a small one which takes some small value, and a | |
909 | larger one which takes a 16 bit value. Since branches also follow | |
910 | this pattern, relaxing these values is required. | |
911 | ||
912 | We can assemble both mips16 and normal MIPS code in a single | |
913 | object. Therefore, we need to support this type of relaxation at | |
914 | the same time that we support the relaxation described above. We | |
915 | use the high bit of the subtype field to distinguish these cases. | |
916 | ||
917 | The information we store for this type of relaxation is the | |
918 | argument code found in the opcode file for this relocation, whether | |
919 | the user explicitly requested a small or extended form, and whether | |
920 | the relocation is in a jump or jal delay slot. That tells us the | |
921 | size of the value, and how it should be stored. We also store | |
922 | whether the fragment is considered to be extended or not. We also | |
923 | store whether this is known to be a branch to a different section, | |
924 | whether we have tried to relax this frag yet, and whether we have | |
925 | ever extended a PC relative fragment because of a shift count. */ | |
926 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
927 | (0x80000000 \ | |
928 | | ((type) & 0xff) \ | |
929 | | ((small) ? 0x100 : 0) \ | |
930 | | ((ext) ? 0x200 : 0) \ | |
931 | | ((dslot) ? 0x400 : 0) \ | |
932 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 933 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
934 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
935 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
936 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
937 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
938 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
939 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
940 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
941 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
942 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
943 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
944 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 CD |
945 | |
946 | /* Is the given value a sign-extended 32-bit value? */ | |
947 | #define IS_SEXT_32BIT_NUM(x) \ | |
948 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
949 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
950 | ||
951 | /* Is the given value a sign-extended 16-bit value? */ | |
952 | #define IS_SEXT_16BIT_NUM(x) \ | |
953 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
954 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
955 | ||
2051e8c4 MR |
956 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
957 | #define IS_ZEXT_32BIT_NUM(x) \ | |
958 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
959 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
960 | ||
bf12938e RS |
961 | /* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in |
962 | VALUE << SHIFT. VALUE is evaluated exactly once. */ | |
963 | #define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \ | |
964 | (STRUCT) = (((STRUCT) & ~((MASK) << (SHIFT))) \ | |
965 | | (((VALUE) & (MASK)) << (SHIFT))) | |
966 | ||
967 | /* Extract bits MASK << SHIFT from STRUCT and shift them right | |
968 | SHIFT places. */ | |
969 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
970 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
971 | ||
972 | /* Change INSN's opcode so that the operand given by FIELD has value VALUE. | |
973 | INSN is a mips_cl_insn structure and VALUE is evaluated exactly once. | |
974 | ||
975 | include/opcode/mips.h specifies operand fields using the macros | |
976 | OP_MASK_<FIELD> and OP_SH_<FIELD>. The MIPS16 equivalents start | |
977 | with "MIPS16OP" instead of "OP". */ | |
978 | #define INSERT_OPERAND(FIELD, INSN, VALUE) \ | |
979 | INSERT_BITS ((INSN).insn_opcode, VALUE, OP_MASK_##FIELD, OP_SH_##FIELD) | |
980 | #define MIPS16_INSERT_OPERAND(FIELD, INSN, VALUE) \ | |
981 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
982 | MIPS16OP_MASK_##FIELD, MIPS16OP_SH_##FIELD) | |
983 | ||
984 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ | |
985 | #define EXTRACT_OPERAND(FIELD, INSN) \ | |
986 | EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) | |
987 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ | |
988 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
989 | MIPS16OP_MASK_##FIELD, \ | |
990 | MIPS16OP_SH_##FIELD) | |
4d7206a2 RS |
991 | \f |
992 | /* Global variables used when generating relaxable macros. See the | |
993 | comment above RELAX_ENCODE for more details about how relaxation | |
994 | is used. */ | |
995 | static struct { | |
996 | /* 0 if we're not emitting a relaxable macro. | |
997 | 1 if we're emitting the first of the two relaxation alternatives. | |
998 | 2 if we're emitting the second alternative. */ | |
999 | int sequence; | |
1000 | ||
1001 | /* The first relaxable fixup in the current frag. (In other words, | |
1002 | the first fixup that refers to relaxable code.) */ | |
1003 | fixS *first_fixup; | |
1004 | ||
1005 | /* sizes[0] says how many bytes of the first alternative are stored in | |
1006 | the current frag. Likewise sizes[1] for the second alternative. */ | |
1007 | unsigned int sizes[2]; | |
1008 | ||
1009 | /* The symbol on which the choice of sequence depends. */ | |
1010 | symbolS *symbol; | |
1011 | } mips_relax; | |
252b5132 | 1012 | \f |
584892a6 RS |
1013 | /* Global variables used to decide whether a macro needs a warning. */ |
1014 | static struct { | |
1015 | /* True if the macro is in a branch delay slot. */ | |
1016 | bfd_boolean delay_slot_p; | |
1017 | ||
1018 | /* For relaxable macros, sizes[0] is the length of the first alternative | |
1019 | in bytes and sizes[1] is the length of the second alternative. | |
1020 | For non-relaxable macros, both elements give the length of the | |
1021 | macro in bytes. */ | |
1022 | unsigned int sizes[2]; | |
1023 | ||
1024 | /* The first variant frag for this macro. */ | |
1025 | fragS *first_frag; | |
1026 | } mips_macro_warning; | |
1027 | \f | |
252b5132 RH |
1028 | /* Prototypes for static functions. */ |
1029 | ||
17a2f251 | 1030 | #define internalError() \ |
252b5132 | 1031 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) |
252b5132 RH |
1032 | |
1033 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
1034 | ||
b34976b6 | 1035 | static void append_insn |
4d7206a2 | 1036 | (struct mips_cl_insn *ip, expressionS *p, bfd_reloc_code_real_type *r); |
7d10b47d | 1037 | static void mips_no_prev_insn (void); |
b34976b6 | 1038 | static void mips16_macro_build |
67c0d1eb RS |
1039 | (expressionS *, const char *, const char *, va_list); |
1040 | static void load_register (int, expressionS *, int); | |
584892a6 RS |
1041 | static void macro_start (void); |
1042 | static void macro_end (void); | |
17a2f251 TS |
1043 | static void macro (struct mips_cl_insn * ip); |
1044 | static void mips16_macro (struct mips_cl_insn * ip); | |
252b5132 | 1045 | #ifdef LOSING_COMPILER |
17a2f251 | 1046 | static void macro2 (struct mips_cl_insn * ip); |
252b5132 | 1047 | #endif |
17a2f251 TS |
1048 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
1049 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 1050 | static void mips16_immed |
17a2f251 TS |
1051 | (char *, unsigned int, int, offsetT, bfd_boolean, bfd_boolean, bfd_boolean, |
1052 | unsigned long *, bfd_boolean *, unsigned short *); | |
5e0116d5 | 1053 | static size_t my_getSmallExpression |
17a2f251 TS |
1054 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1055 | static void my_getExpression (expressionS *, char *); | |
1056 | static void s_align (int); | |
1057 | static void s_change_sec (int); | |
1058 | static void s_change_section (int); | |
1059 | static void s_cons (int); | |
1060 | static void s_float_cons (int); | |
1061 | static void s_mips_globl (int); | |
1062 | static void s_option (int); | |
1063 | static void s_mipsset (int); | |
1064 | static void s_abicalls (int); | |
1065 | static void s_cpload (int); | |
1066 | static void s_cpsetup (int); | |
1067 | static void s_cplocal (int); | |
1068 | static void s_cprestore (int); | |
1069 | static void s_cpreturn (int); | |
741d6ea8 JM |
1070 | static void s_dtprelword (int); |
1071 | static void s_dtpreldword (int); | |
17a2f251 TS |
1072 | static void s_gpvalue (int); |
1073 | static void s_gpword (int); | |
1074 | static void s_gpdword (int); | |
1075 | static void s_cpadd (int); | |
1076 | static void s_insn (int); | |
1077 | static void md_obj_begin (void); | |
1078 | static void md_obj_end (void); | |
1079 | static void s_mips_ent (int); | |
1080 | static void s_mips_end (int); | |
1081 | static void s_mips_frame (int); | |
1082 | static void s_mips_mask (int reg_type); | |
1083 | static void s_mips_stab (int); | |
1084 | static void s_mips_weakext (int); | |
1085 | static void s_mips_file (int); | |
1086 | static void s_mips_loc (int); | |
1087 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1088 | static int relaxed_branch_length (fragS *, asection *, int); |
17a2f251 | 1089 | static int validate_mips_insn (const struct mips_opcode *); |
e7af610e NC |
1090 | |
1091 | /* Table and functions used to map between CPU/ISA names, and | |
1092 | ISA levels, and CPU numbers. */ | |
1093 | ||
e972090a NC |
1094 | struct mips_cpu_info |
1095 | { | |
e7af610e | 1096 | const char *name; /* CPU or ISA name. */ |
ad3fea08 | 1097 | int flags; /* ASEs available, or ISA flag. */ |
e7af610e NC |
1098 | int isa; /* ISA level. */ |
1099 | int cpu; /* CPU number (default CPU if ISA). */ | |
1100 | }; | |
1101 | ||
ad3fea08 TS |
1102 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
1103 | #define MIPS_CPU_ASE_SMARTMIPS 0x0002 /* CPU implements SmartMIPS ASE */ | |
1104 | #define MIPS_CPU_ASE_DSP 0x0004 /* CPU implements DSP ASE */ | |
1105 | #define MIPS_CPU_ASE_MT 0x0008 /* CPU implements MT ASE */ | |
1106 | #define MIPS_CPU_ASE_MIPS3D 0x0010 /* CPU implements MIPS-3D ASE */ | |
1107 | #define MIPS_CPU_ASE_MDMX 0x0020 /* CPU implements MDMX ASE */ | |
8b082fb1 | 1108 | #define MIPS_CPU_ASE_DSPR2 0x0040 /* CPU implements DSP R2 ASE */ |
ad3fea08 | 1109 | |
17a2f251 TS |
1110 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1111 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1112 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 RH |
1113 | \f |
1114 | /* Pseudo-op table. | |
1115 | ||
1116 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1117 | should be defined here, but are currently unsupported: .alias, | |
1118 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1119 | ||
1120 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1121 | specific to the type of debugging information being generated, and | |
1122 | should be defined by the object format: .aent, .begin, .bend, | |
1123 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1124 | .vreg. | |
1125 | ||
1126 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1127 | not MIPS CPU specific, but are also not specific to the object file | |
1128 | format. This file is probably the best place to define them, but | |
d84bcf09 | 1129 | they are not currently supported: .asm0, .endr, .lab, .struct. */ |
252b5132 | 1130 | |
e972090a NC |
1131 | static const pseudo_typeS mips_pseudo_table[] = |
1132 | { | |
beae10d5 | 1133 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1134 | {"option", s_option, 0}, |
1135 | {"set", s_mipsset, 0}, | |
1136 | {"rdata", s_change_sec, 'r'}, | |
1137 | {"sdata", s_change_sec, 's'}, | |
1138 | {"livereg", s_ignore, 0}, | |
1139 | {"abicalls", s_abicalls, 0}, | |
1140 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1141 | {"cpsetup", s_cpsetup, 0}, |
1142 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1143 | {"cprestore", s_cprestore, 0}, |
6478892d | 1144 | {"cpreturn", s_cpreturn, 0}, |
741d6ea8 JM |
1145 | {"dtprelword", s_dtprelword, 0}, |
1146 | {"dtpreldword", s_dtpreldword, 0}, | |
6478892d | 1147 | {"gpvalue", s_gpvalue, 0}, |
252b5132 | 1148 | {"gpword", s_gpword, 0}, |
10181a0d | 1149 | {"gpdword", s_gpdword, 0}, |
252b5132 RH |
1150 | {"cpadd", s_cpadd, 0}, |
1151 | {"insn", s_insn, 0}, | |
1152 | ||
beae10d5 | 1153 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 | 1154 | chips. */ |
38a57ae7 | 1155 | {"asciiz", stringer, 8 + 1}, |
252b5132 RH |
1156 | {"bss", s_change_sec, 'b'}, |
1157 | {"err", s_err, 0}, | |
1158 | {"half", s_cons, 1}, | |
1159 | {"dword", s_cons, 3}, | |
1160 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1161 | {"origin", s_org, 0}, |
1162 | {"repeat", s_rept, 0}, | |
252b5132 | 1163 | |
beae10d5 | 1164 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1165 | here for one reason or another. */ |
1166 | {"align", s_align, 0}, | |
1167 | {"byte", s_cons, 0}, | |
1168 | {"data", s_change_sec, 'd'}, | |
1169 | {"double", s_float_cons, 'd'}, | |
1170 | {"float", s_float_cons, 'f'}, | |
1171 | {"globl", s_mips_globl, 0}, | |
1172 | {"global", s_mips_globl, 0}, | |
1173 | {"hword", s_cons, 1}, | |
1174 | {"int", s_cons, 2}, | |
1175 | {"long", s_cons, 2}, | |
1176 | {"octa", s_cons, 4}, | |
1177 | {"quad", s_cons, 3}, | |
cca86cc8 | 1178 | {"section", s_change_section, 0}, |
252b5132 RH |
1179 | {"short", s_cons, 1}, |
1180 | {"single", s_float_cons, 'f'}, | |
1181 | {"stabn", s_mips_stab, 'n'}, | |
1182 | {"text", s_change_sec, 't'}, | |
1183 | {"word", s_cons, 2}, | |
add56521 | 1184 | |
add56521 | 1185 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1186 | |
43841e91 | 1187 | { NULL, NULL, 0 }, |
252b5132 RH |
1188 | }; |
1189 | ||
e972090a NC |
1190 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1191 | { | |
beae10d5 KH |
1192 | /* These pseudo-ops should be defined by the object file format. |
1193 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1194 | {"aent", s_mips_ent, 1}, |
1195 | {"bgnb", s_ignore, 0}, | |
1196 | {"end", s_mips_end, 0}, | |
1197 | {"endb", s_ignore, 0}, | |
1198 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1199 | {"file", s_mips_file, 0}, |
252b5132 RH |
1200 | {"fmask", s_mips_mask, 'F'}, |
1201 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1202 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1203 | {"mask", s_mips_mask, 'R'}, |
1204 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1205 | { NULL, NULL, 0 }, |
252b5132 RH |
1206 | }; |
1207 | ||
17a2f251 | 1208 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1209 | |
1210 | void | |
17a2f251 | 1211 | mips_pop_insert (void) |
252b5132 RH |
1212 | { |
1213 | pop_insert (mips_pseudo_table); | |
1214 | if (! ECOFF_DEBUGGING) | |
1215 | pop_insert (mips_nonecoff_pseudo_table); | |
1216 | } | |
1217 | \f | |
1218 | /* Symbols labelling the current insn. */ | |
1219 | ||
e972090a NC |
1220 | struct insn_label_list |
1221 | { | |
252b5132 RH |
1222 | struct insn_label_list *next; |
1223 | symbolS *label; | |
1224 | }; | |
1225 | ||
252b5132 | 1226 | static struct insn_label_list *free_insn_labels; |
742a56fe | 1227 | #define label_list tc_segment_info_data.labels |
252b5132 | 1228 | |
17a2f251 | 1229 | static void mips_clear_insn_labels (void); |
252b5132 RH |
1230 | |
1231 | static inline void | |
17a2f251 | 1232 | mips_clear_insn_labels (void) |
252b5132 RH |
1233 | { |
1234 | register struct insn_label_list **pl; | |
a8dbcb85 | 1235 | segment_info_type *si; |
252b5132 | 1236 | |
a8dbcb85 TS |
1237 | if (now_seg) |
1238 | { | |
1239 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1240 | ; | |
1241 | ||
1242 | si = seg_info (now_seg); | |
1243 | *pl = si->label_list; | |
1244 | si->label_list = NULL; | |
1245 | } | |
252b5132 | 1246 | } |
a8dbcb85 | 1247 | |
252b5132 RH |
1248 | \f |
1249 | static char *expr_end; | |
1250 | ||
1251 | /* Expressions which appear in instructions. These are set by | |
1252 | mips_ip. */ | |
1253 | ||
1254 | static expressionS imm_expr; | |
5f74bc13 | 1255 | static expressionS imm2_expr; |
252b5132 RH |
1256 | static expressionS offset_expr; |
1257 | ||
1258 | /* Relocs associated with imm_expr and offset_expr. */ | |
1259 | ||
f6688943 TS |
1260 | static bfd_reloc_code_real_type imm_reloc[3] |
1261 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
1262 | static bfd_reloc_code_real_type offset_reloc[3] | |
1263 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1264 | |
252b5132 RH |
1265 | /* These are set by mips16_ip if an explicit extension is used. */ |
1266 | ||
b34976b6 | 1267 | static bfd_boolean mips16_small, mips16_ext; |
252b5132 | 1268 | |
7ed4a06a | 1269 | #ifdef OBJ_ELF |
ecb4347a DJ |
1270 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1271 | ECOFF debugging. */ | |
252b5132 RH |
1272 | |
1273 | static segT pdr_seg; | |
7ed4a06a | 1274 | #endif |
252b5132 | 1275 | |
e013f690 TS |
1276 | /* The default target format to use. */ |
1277 | ||
1278 | const char * | |
17a2f251 | 1279 | mips_target_format (void) |
e013f690 TS |
1280 | { |
1281 | switch (OUTPUT_FLAVOR) | |
1282 | { | |
e013f690 TS |
1283 | case bfd_target_ecoff_flavour: |
1284 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
1285 | case bfd_target_coff_flavour: | |
1286 | return "pe-mips"; | |
1287 | case bfd_target_elf_flavour: | |
0a44bf69 RS |
1288 | #ifdef TE_VXWORKS |
1289 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1290 | return (target_big_endian | |
1291 | ? "elf32-bigmips-vxworks" | |
1292 | : "elf32-littlemips-vxworks"); | |
1293 | #endif | |
e013f690 | 1294 | #ifdef TE_TMIPS |
cfe86eaa | 1295 | /* This is traditional mips. */ |
e013f690 | 1296 | return (target_big_endian |
cfe86eaa TS |
1297 | ? (HAVE_64BIT_OBJECTS |
1298 | ? "elf64-tradbigmips" | |
1299 | : (HAVE_NEWABI | |
1300 | ? "elf32-ntradbigmips" : "elf32-tradbigmips")) | |
1301 | : (HAVE_64BIT_OBJECTS | |
1302 | ? "elf64-tradlittlemips" | |
1303 | : (HAVE_NEWABI | |
1304 | ? "elf32-ntradlittlemips" : "elf32-tradlittlemips"))); | |
e013f690 TS |
1305 | #else |
1306 | return (target_big_endian | |
cfe86eaa TS |
1307 | ? (HAVE_64BIT_OBJECTS |
1308 | ? "elf64-bigmips" | |
1309 | : (HAVE_NEWABI | |
1310 | ? "elf32-nbigmips" : "elf32-bigmips")) | |
1311 | : (HAVE_64BIT_OBJECTS | |
1312 | ? "elf64-littlemips" | |
1313 | : (HAVE_NEWABI | |
1314 | ? "elf32-nlittlemips" : "elf32-littlemips"))); | |
e013f690 TS |
1315 | #endif |
1316 | default: | |
1317 | abort (); | |
1318 | return NULL; | |
1319 | } | |
1320 | } | |
1321 | ||
1e915849 RS |
1322 | /* Return the length of instruction INSN. */ |
1323 | ||
1324 | static inline unsigned int | |
1325 | insn_length (const struct mips_cl_insn *insn) | |
1326 | { | |
1327 | if (!mips_opts.mips16) | |
1328 | return 4; | |
1329 | return insn->mips16_absolute_jump_p || insn->use_extend ? 4 : 2; | |
1330 | } | |
1331 | ||
1332 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
1333 | ||
1334 | static void | |
1335 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
1336 | { | |
1337 | size_t i; | |
1338 | ||
1339 | insn->insn_mo = mo; | |
1340 | insn->use_extend = FALSE; | |
1341 | insn->extend = 0; | |
1342 | insn->insn_opcode = mo->match; | |
1343 | insn->frag = NULL; | |
1344 | insn->where = 0; | |
1345 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1346 | insn->fixp[i] = NULL; | |
1347 | insn->fixed_p = (mips_opts.noreorder > 0); | |
1348 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
1349 | insn->mips16_absolute_jump_p = 0; | |
1350 | } | |
1351 | ||
742a56fe RS |
1352 | /* Record the current MIPS16 mode in now_seg. */ |
1353 | ||
1354 | static void | |
1355 | mips_record_mips16_mode (void) | |
1356 | { | |
1357 | segment_info_type *si; | |
1358 | ||
1359 | si = seg_info (now_seg); | |
1360 | if (si->tc_segment_info_data.mips16 != mips_opts.mips16) | |
1361 | si->tc_segment_info_data.mips16 = mips_opts.mips16; | |
1362 | } | |
1363 | ||
1e915849 RS |
1364 | /* Install INSN at the location specified by its "frag" and "where" fields. */ |
1365 | ||
1366 | static void | |
1367 | install_insn (const struct mips_cl_insn *insn) | |
1368 | { | |
1369 | char *f = insn->frag->fr_literal + insn->where; | |
1370 | if (!mips_opts.mips16) | |
1371 | md_number_to_chars (f, insn->insn_opcode, 4); | |
1372 | else if (insn->mips16_absolute_jump_p) | |
1373 | { | |
1374 | md_number_to_chars (f, insn->insn_opcode >> 16, 2); | |
1375 | md_number_to_chars (f + 2, insn->insn_opcode & 0xffff, 2); | |
1376 | } | |
1377 | else | |
1378 | { | |
1379 | if (insn->use_extend) | |
1380 | { | |
1381 | md_number_to_chars (f, 0xf000 | insn->extend, 2); | |
1382 | f += 2; | |
1383 | } | |
1384 | md_number_to_chars (f, insn->insn_opcode, 2); | |
1385 | } | |
742a56fe | 1386 | mips_record_mips16_mode (); |
1e915849 RS |
1387 | } |
1388 | ||
1389 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
1390 | and install the opcode in the new location. */ | |
1391 | ||
1392 | static void | |
1393 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
1394 | { | |
1395 | size_t i; | |
1396 | ||
1397 | insn->frag = frag; | |
1398 | insn->where = where; | |
1399 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1400 | if (insn->fixp[i] != NULL) | |
1401 | { | |
1402 | insn->fixp[i]->fx_frag = frag; | |
1403 | insn->fixp[i]->fx_where = where; | |
1404 | } | |
1405 | install_insn (insn); | |
1406 | } | |
1407 | ||
1408 | /* Add INSN to the end of the output. */ | |
1409 | ||
1410 | static void | |
1411 | add_fixed_insn (struct mips_cl_insn *insn) | |
1412 | { | |
1413 | char *f = frag_more (insn_length (insn)); | |
1414 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
1415 | } | |
1416 | ||
1417 | /* Start a variant frag and move INSN to the start of the variant part, | |
1418 | marking it as fixed. The other arguments are as for frag_var. */ | |
1419 | ||
1420 | static void | |
1421 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
1422 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
1423 | { | |
1424 | frag_grow (max_chars); | |
1425 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
1426 | insn->fixed_p = 1; | |
1427 | frag_var (rs_machine_dependent, max_chars, var, | |
1428 | subtype, symbol, offset, NULL); | |
1429 | } | |
1430 | ||
1431 | /* Insert N copies of INSN into the history buffer, starting at | |
1432 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
1433 | ||
1434 | static void | |
1435 | insert_into_history (unsigned int first, unsigned int n, | |
1436 | const struct mips_cl_insn *insn) | |
1437 | { | |
1438 | if (mips_relax.sequence != 2) | |
1439 | { | |
1440 | unsigned int i; | |
1441 | ||
1442 | for (i = ARRAY_SIZE (history); i-- > first;) | |
1443 | if (i >= first + n) | |
1444 | history[i] = history[i - n]; | |
1445 | else | |
1446 | history[i] = *insn; | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | /* Emit a nop instruction, recording it in the history buffer. */ | |
1451 | ||
1452 | static void | |
1453 | emit_nop (void) | |
1454 | { | |
1455 | add_fixed_insn (NOP_INSN); | |
1456 | insert_into_history (0, 1, NOP_INSN); | |
1457 | } | |
1458 | ||
71400594 RS |
1459 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
1460 | the idea is to make it obvious at a glance that each errata is | |
1461 | included. */ | |
1462 | ||
1463 | static void | |
1464 | init_vr4120_conflicts (void) | |
1465 | { | |
1466 | #define CONFLICT(FIRST, SECOND) \ | |
1467 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
1468 | ||
1469 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
1470 | CONFLICT (MACC, DIV); | |
1471 | CONFLICT (DMACC, DIV); | |
1472 | ||
1473 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
1474 | CONFLICT (DMULT, DMULT); | |
1475 | CONFLICT (DMULT, DMACC); | |
1476 | CONFLICT (DMACC, DMULT); | |
1477 | CONFLICT (DMACC, DMACC); | |
1478 | ||
1479 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
1480 | CONFLICT (MACC, MTHILO); | |
1481 | CONFLICT (DMACC, MTHILO); | |
1482 | ||
1483 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
1484 | instruction is executed immediately after a MACC or DMACC | |
1485 | instruction, the result of [either instruction] is incorrect." */ | |
1486 | CONFLICT (MACC, MULT); | |
1487 | CONFLICT (MACC, DMULT); | |
1488 | CONFLICT (DMACC, MULT); | |
1489 | CONFLICT (DMACC, DMULT); | |
1490 | ||
1491 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
1492 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
1493 | DDIV or DDIVU instruction, the result of the MACC or | |
1494 | DMACC instruction is incorrect.". */ | |
1495 | CONFLICT (DMULT, MACC); | |
1496 | CONFLICT (DMULT, DMACC); | |
1497 | CONFLICT (DIV, MACC); | |
1498 | CONFLICT (DIV, DMACC); | |
1499 | ||
1500 | #undef CONFLICT | |
1501 | } | |
1502 | ||
707bfff6 TS |
1503 | struct regname { |
1504 | const char *name; | |
1505 | unsigned int num; | |
1506 | }; | |
1507 | ||
1508 | #define RTYPE_MASK 0x1ff00 | |
1509 | #define RTYPE_NUM 0x00100 | |
1510 | #define RTYPE_FPU 0x00200 | |
1511 | #define RTYPE_FCC 0x00400 | |
1512 | #define RTYPE_VEC 0x00800 | |
1513 | #define RTYPE_GP 0x01000 | |
1514 | #define RTYPE_CP0 0x02000 | |
1515 | #define RTYPE_PC 0x04000 | |
1516 | #define RTYPE_ACC 0x08000 | |
1517 | #define RTYPE_CCC 0x10000 | |
1518 | #define RNUM_MASK 0x000ff | |
1519 | #define RWARN 0x80000 | |
1520 | ||
1521 | #define GENERIC_REGISTER_NUMBERS \ | |
1522 | {"$0", RTYPE_NUM | 0}, \ | |
1523 | {"$1", RTYPE_NUM | 1}, \ | |
1524 | {"$2", RTYPE_NUM | 2}, \ | |
1525 | {"$3", RTYPE_NUM | 3}, \ | |
1526 | {"$4", RTYPE_NUM | 4}, \ | |
1527 | {"$5", RTYPE_NUM | 5}, \ | |
1528 | {"$6", RTYPE_NUM | 6}, \ | |
1529 | {"$7", RTYPE_NUM | 7}, \ | |
1530 | {"$8", RTYPE_NUM | 8}, \ | |
1531 | {"$9", RTYPE_NUM | 9}, \ | |
1532 | {"$10", RTYPE_NUM | 10}, \ | |
1533 | {"$11", RTYPE_NUM | 11}, \ | |
1534 | {"$12", RTYPE_NUM | 12}, \ | |
1535 | {"$13", RTYPE_NUM | 13}, \ | |
1536 | {"$14", RTYPE_NUM | 14}, \ | |
1537 | {"$15", RTYPE_NUM | 15}, \ | |
1538 | {"$16", RTYPE_NUM | 16}, \ | |
1539 | {"$17", RTYPE_NUM | 17}, \ | |
1540 | {"$18", RTYPE_NUM | 18}, \ | |
1541 | {"$19", RTYPE_NUM | 19}, \ | |
1542 | {"$20", RTYPE_NUM | 20}, \ | |
1543 | {"$21", RTYPE_NUM | 21}, \ | |
1544 | {"$22", RTYPE_NUM | 22}, \ | |
1545 | {"$23", RTYPE_NUM | 23}, \ | |
1546 | {"$24", RTYPE_NUM | 24}, \ | |
1547 | {"$25", RTYPE_NUM | 25}, \ | |
1548 | {"$26", RTYPE_NUM | 26}, \ | |
1549 | {"$27", RTYPE_NUM | 27}, \ | |
1550 | {"$28", RTYPE_NUM | 28}, \ | |
1551 | {"$29", RTYPE_NUM | 29}, \ | |
1552 | {"$30", RTYPE_NUM | 30}, \ | |
1553 | {"$31", RTYPE_NUM | 31} | |
1554 | ||
1555 | #define FPU_REGISTER_NAMES \ | |
1556 | {"$f0", RTYPE_FPU | 0}, \ | |
1557 | {"$f1", RTYPE_FPU | 1}, \ | |
1558 | {"$f2", RTYPE_FPU | 2}, \ | |
1559 | {"$f3", RTYPE_FPU | 3}, \ | |
1560 | {"$f4", RTYPE_FPU | 4}, \ | |
1561 | {"$f5", RTYPE_FPU | 5}, \ | |
1562 | {"$f6", RTYPE_FPU | 6}, \ | |
1563 | {"$f7", RTYPE_FPU | 7}, \ | |
1564 | {"$f8", RTYPE_FPU | 8}, \ | |
1565 | {"$f9", RTYPE_FPU | 9}, \ | |
1566 | {"$f10", RTYPE_FPU | 10}, \ | |
1567 | {"$f11", RTYPE_FPU | 11}, \ | |
1568 | {"$f12", RTYPE_FPU | 12}, \ | |
1569 | {"$f13", RTYPE_FPU | 13}, \ | |
1570 | {"$f14", RTYPE_FPU | 14}, \ | |
1571 | {"$f15", RTYPE_FPU | 15}, \ | |
1572 | {"$f16", RTYPE_FPU | 16}, \ | |
1573 | {"$f17", RTYPE_FPU | 17}, \ | |
1574 | {"$f18", RTYPE_FPU | 18}, \ | |
1575 | {"$f19", RTYPE_FPU | 19}, \ | |
1576 | {"$f20", RTYPE_FPU | 20}, \ | |
1577 | {"$f21", RTYPE_FPU | 21}, \ | |
1578 | {"$f22", RTYPE_FPU | 22}, \ | |
1579 | {"$f23", RTYPE_FPU | 23}, \ | |
1580 | {"$f24", RTYPE_FPU | 24}, \ | |
1581 | {"$f25", RTYPE_FPU | 25}, \ | |
1582 | {"$f26", RTYPE_FPU | 26}, \ | |
1583 | {"$f27", RTYPE_FPU | 27}, \ | |
1584 | {"$f28", RTYPE_FPU | 28}, \ | |
1585 | {"$f29", RTYPE_FPU | 29}, \ | |
1586 | {"$f30", RTYPE_FPU | 30}, \ | |
1587 | {"$f31", RTYPE_FPU | 31} | |
1588 | ||
1589 | #define FPU_CONDITION_CODE_NAMES \ | |
1590 | {"$fcc0", RTYPE_FCC | 0}, \ | |
1591 | {"$fcc1", RTYPE_FCC | 1}, \ | |
1592 | {"$fcc2", RTYPE_FCC | 2}, \ | |
1593 | {"$fcc3", RTYPE_FCC | 3}, \ | |
1594 | {"$fcc4", RTYPE_FCC | 4}, \ | |
1595 | {"$fcc5", RTYPE_FCC | 5}, \ | |
1596 | {"$fcc6", RTYPE_FCC | 6}, \ | |
1597 | {"$fcc7", RTYPE_FCC | 7} | |
1598 | ||
1599 | #define COPROC_CONDITION_CODE_NAMES \ | |
1600 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
1601 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
1602 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
1603 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
1604 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
1605 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
1606 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
1607 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
1608 | ||
1609 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
1610 | {"$a4", RTYPE_GP | 8}, \ | |
1611 | {"$a5", RTYPE_GP | 9}, \ | |
1612 | {"$a6", RTYPE_GP | 10}, \ | |
1613 | {"$a7", RTYPE_GP | 11}, \ | |
1614 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
1615 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
1616 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
1617 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
1618 | {"$t0", RTYPE_GP | 12}, \ | |
1619 | {"$t1", RTYPE_GP | 13}, \ | |
1620 | {"$t2", RTYPE_GP | 14}, \ | |
1621 | {"$t3", RTYPE_GP | 15} | |
1622 | ||
1623 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
1624 | {"$t0", RTYPE_GP | 8}, \ | |
1625 | {"$t1", RTYPE_GP | 9}, \ | |
1626 | {"$t2", RTYPE_GP | 10}, \ | |
1627 | {"$t3", RTYPE_GP | 11}, \ | |
1628 | {"$t4", RTYPE_GP | 12}, \ | |
1629 | {"$t5", RTYPE_GP | 13}, \ | |
1630 | {"$t6", RTYPE_GP | 14}, \ | |
1631 | {"$t7", RTYPE_GP | 15}, \ | |
1632 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
1633 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
1634 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
1635 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ | |
1636 | ||
1637 | /* Remaining symbolic register names */ | |
1638 | #define SYMBOLIC_REGISTER_NAMES \ | |
1639 | {"$zero", RTYPE_GP | 0}, \ | |
1640 | {"$at", RTYPE_GP | 1}, \ | |
1641 | {"$AT", RTYPE_GP | 1}, \ | |
1642 | {"$v0", RTYPE_GP | 2}, \ | |
1643 | {"$v1", RTYPE_GP | 3}, \ | |
1644 | {"$a0", RTYPE_GP | 4}, \ | |
1645 | {"$a1", RTYPE_GP | 5}, \ | |
1646 | {"$a2", RTYPE_GP | 6}, \ | |
1647 | {"$a3", RTYPE_GP | 7}, \ | |
1648 | {"$s0", RTYPE_GP | 16}, \ | |
1649 | {"$s1", RTYPE_GP | 17}, \ | |
1650 | {"$s2", RTYPE_GP | 18}, \ | |
1651 | {"$s3", RTYPE_GP | 19}, \ | |
1652 | {"$s4", RTYPE_GP | 20}, \ | |
1653 | {"$s5", RTYPE_GP | 21}, \ | |
1654 | {"$s6", RTYPE_GP | 22}, \ | |
1655 | {"$s7", RTYPE_GP | 23}, \ | |
1656 | {"$t8", RTYPE_GP | 24}, \ | |
1657 | {"$t9", RTYPE_GP | 25}, \ | |
1658 | {"$k0", RTYPE_GP | 26}, \ | |
1659 | {"$kt0", RTYPE_GP | 26}, \ | |
1660 | {"$k1", RTYPE_GP | 27}, \ | |
1661 | {"$kt1", RTYPE_GP | 27}, \ | |
1662 | {"$gp", RTYPE_GP | 28}, \ | |
1663 | {"$sp", RTYPE_GP | 29}, \ | |
1664 | {"$s8", RTYPE_GP | 30}, \ | |
1665 | {"$fp", RTYPE_GP | 30}, \ | |
1666 | {"$ra", RTYPE_GP | 31} | |
1667 | ||
1668 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
1669 | {"$pc", RTYPE_PC | 0} | |
1670 | ||
1671 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
1672 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
1673 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
1674 | {"$v2", RTYPE_VEC | 2}, \ | |
1675 | {"$v3", RTYPE_VEC | 3}, \ | |
1676 | {"$v4", RTYPE_VEC | 4}, \ | |
1677 | {"$v5", RTYPE_VEC | 5}, \ | |
1678 | {"$v6", RTYPE_VEC | 6}, \ | |
1679 | {"$v7", RTYPE_VEC | 7}, \ | |
1680 | {"$v8", RTYPE_VEC | 8}, \ | |
1681 | {"$v9", RTYPE_VEC | 9}, \ | |
1682 | {"$v10", RTYPE_VEC | 10}, \ | |
1683 | {"$v11", RTYPE_VEC | 11}, \ | |
1684 | {"$v12", RTYPE_VEC | 12}, \ | |
1685 | {"$v13", RTYPE_VEC | 13}, \ | |
1686 | {"$v14", RTYPE_VEC | 14}, \ | |
1687 | {"$v15", RTYPE_VEC | 15}, \ | |
1688 | {"$v16", RTYPE_VEC | 16}, \ | |
1689 | {"$v17", RTYPE_VEC | 17}, \ | |
1690 | {"$v18", RTYPE_VEC | 18}, \ | |
1691 | {"$v19", RTYPE_VEC | 19}, \ | |
1692 | {"$v20", RTYPE_VEC | 20}, \ | |
1693 | {"$v21", RTYPE_VEC | 21}, \ | |
1694 | {"$v22", RTYPE_VEC | 22}, \ | |
1695 | {"$v23", RTYPE_VEC | 23}, \ | |
1696 | {"$v24", RTYPE_VEC | 24}, \ | |
1697 | {"$v25", RTYPE_VEC | 25}, \ | |
1698 | {"$v26", RTYPE_VEC | 26}, \ | |
1699 | {"$v27", RTYPE_VEC | 27}, \ | |
1700 | {"$v28", RTYPE_VEC | 28}, \ | |
1701 | {"$v29", RTYPE_VEC | 29}, \ | |
1702 | {"$v30", RTYPE_VEC | 30}, \ | |
1703 | {"$v31", RTYPE_VEC | 31} | |
1704 | ||
1705 | #define MIPS_DSP_ACCUMULATOR_NAMES \ | |
1706 | {"$ac0", RTYPE_ACC | 0}, \ | |
1707 | {"$ac1", RTYPE_ACC | 1}, \ | |
1708 | {"$ac2", RTYPE_ACC | 2}, \ | |
1709 | {"$ac3", RTYPE_ACC | 3} | |
1710 | ||
1711 | static const struct regname reg_names[] = { | |
1712 | GENERIC_REGISTER_NUMBERS, | |
1713 | FPU_REGISTER_NAMES, | |
1714 | FPU_CONDITION_CODE_NAMES, | |
1715 | COPROC_CONDITION_CODE_NAMES, | |
1716 | ||
1717 | /* The $txx registers depends on the abi, | |
1718 | these will be added later into the symbol table from | |
1719 | one of the tables below once mips_abi is set after | |
1720 | parsing of arguments from the command line. */ | |
1721 | SYMBOLIC_REGISTER_NAMES, | |
1722 | ||
1723 | MIPS16_SPECIAL_REGISTER_NAMES, | |
1724 | MDMX_VECTOR_REGISTER_NAMES, | |
1725 | MIPS_DSP_ACCUMULATOR_NAMES, | |
1726 | {0, 0} | |
1727 | }; | |
1728 | ||
1729 | static const struct regname reg_names_o32[] = { | |
1730 | O32_SYMBOLIC_REGISTER_NAMES, | |
1731 | {0, 0} | |
1732 | }; | |
1733 | ||
1734 | static const struct regname reg_names_n32n64[] = { | |
1735 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
1736 | {0, 0} | |
1737 | }; | |
1738 | ||
1739 | static int | |
1740 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
1741 | { | |
1742 | symbolS *symbolP; | |
1743 | char *e; | |
1744 | char save_c; | |
1745 | int reg = -1; | |
1746 | ||
1747 | /* Find end of name. */ | |
1748 | e = *s; | |
1749 | if (is_name_beginner (*e)) | |
1750 | ++e; | |
1751 | while (is_part_of_name (*e)) | |
1752 | ++e; | |
1753 | ||
1754 | /* Terminate name. */ | |
1755 | save_c = *e; | |
1756 | *e = '\0'; | |
1757 | ||
1758 | /* Look for a register symbol. */ | |
1759 | if ((symbolP = symbol_find (*s)) && S_GET_SEGMENT (symbolP) == reg_section) | |
1760 | { | |
1761 | int r = S_GET_VALUE (symbolP); | |
1762 | if (r & types) | |
1763 | reg = r & RNUM_MASK; | |
1764 | else if ((types & RTYPE_VEC) && (r & ~1) == (RTYPE_GP | 2)) | |
1765 | /* Convert GP reg $v0/1 to MDMX reg $v0/1! */ | |
1766 | reg = (r & RNUM_MASK) - 2; | |
1767 | } | |
1768 | /* Else see if this is a register defined in an itbl entry. */ | |
1769 | else if ((types & RTYPE_GP) && itbl_have_entries) | |
1770 | { | |
1771 | char *n = *s; | |
1772 | unsigned long r; | |
1773 | ||
1774 | if (*n == '$') | |
1775 | ++n; | |
1776 | if (itbl_get_reg_val (n, &r)) | |
1777 | reg = r & RNUM_MASK; | |
1778 | } | |
1779 | ||
1780 | /* Advance to next token if a register was recognised. */ | |
1781 | if (reg >= 0) | |
1782 | *s = e; | |
1783 | else if (types & RWARN) | |
1784 | as_warn ("Unrecognized register name `%s'", *s); | |
1785 | ||
1786 | *e = save_c; | |
1787 | if (regnop) | |
1788 | *regnop = reg; | |
1789 | return reg >= 0; | |
1790 | } | |
1791 | ||
037b32b9 AN |
1792 | /* Return TRUE if opcode MO is valid on the currently selected ISA and |
1793 | architecture. If EXPANSIONP is TRUE then this check is done while | |
1794 | expanding a macro. Use is_opcode_valid_16 for MIPS16 opcodes. */ | |
1795 | ||
1796 | static bfd_boolean | |
1797 | is_opcode_valid (const struct mips_opcode *mo, bfd_boolean expansionp) | |
1798 | { | |
1799 | int isa = mips_opts.isa; | |
1800 | int fp_s, fp_d; | |
1801 | ||
1802 | if (mips_opts.ase_mdmx) | |
1803 | isa |= INSN_MDMX; | |
1804 | if (mips_opts.ase_dsp) | |
1805 | isa |= INSN_DSP; | |
1806 | if (mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE) | |
1807 | isa |= INSN_DSP64; | |
1808 | if (mips_opts.ase_dspr2) | |
1809 | isa |= INSN_DSPR2; | |
1810 | if (mips_opts.ase_mt) | |
1811 | isa |= INSN_MT; | |
1812 | if (mips_opts.ase_mips3d) | |
1813 | isa |= INSN_MIPS3D; | |
1814 | if (mips_opts.ase_smartmips) | |
1815 | isa |= INSN_SMARTMIPS; | |
1816 | ||
1817 | /* For user code we don't check for mips_opts.mips16 since we want | |
1818 | to allow jalx if -mips16 was specified on the command line. */ | |
1819 | if (expansionp ? mips_opts.mips16 : file_ase_mips16) | |
1820 | isa |= INSN_MIPS16; | |
1821 | ||
b19e8a9b AN |
1822 | /* Don't accept instructions based on the ISA if the CPU does not implement |
1823 | all the coprocessor insns. */ | |
1824 | if (NO_ISA_COP (mips_opts.arch) | |
1825 | && COP_INSN (mo->pinfo)) | |
1826 | isa = 0; | |
1827 | ||
037b32b9 AN |
1828 | if (!OPCODE_IS_MEMBER (mo, isa, mips_opts.arch)) |
1829 | return FALSE; | |
1830 | ||
1831 | /* Check whether the instruction or macro requires single-precision or | |
1832 | double-precision floating-point support. Note that this information is | |
1833 | stored differently in the opcode table for insns and macros. */ | |
1834 | if (mo->pinfo == INSN_MACRO) | |
1835 | { | |
1836 | fp_s = mo->pinfo2 & INSN2_M_FP_S; | |
1837 | fp_d = mo->pinfo2 & INSN2_M_FP_D; | |
1838 | } | |
1839 | else | |
1840 | { | |
1841 | fp_s = mo->pinfo & FP_S; | |
1842 | fp_d = mo->pinfo & FP_D; | |
1843 | } | |
1844 | ||
1845 | if (fp_d && (mips_opts.soft_float || mips_opts.single_float)) | |
1846 | return FALSE; | |
1847 | ||
1848 | if (fp_s && mips_opts.soft_float) | |
1849 | return FALSE; | |
1850 | ||
1851 | return TRUE; | |
1852 | } | |
1853 | ||
1854 | /* Return TRUE if the MIPS16 opcode MO is valid on the currently | |
1855 | selected ISA and architecture. */ | |
1856 | ||
1857 | static bfd_boolean | |
1858 | is_opcode_valid_16 (const struct mips_opcode *mo) | |
1859 | { | |
1860 | return OPCODE_IS_MEMBER (mo, mips_opts.isa, mips_opts.arch) ? TRUE : FALSE; | |
1861 | } | |
1862 | ||
707bfff6 TS |
1863 | /* This function is called once, at assembler startup time. It should set up |
1864 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 1865 | |
252b5132 | 1866 | void |
17a2f251 | 1867 | md_begin (void) |
252b5132 | 1868 | { |
3994f87e | 1869 | const char *retval = NULL; |
156c2f8b | 1870 | int i = 0; |
252b5132 | 1871 | int broken = 0; |
1f25f5d3 | 1872 | |
0a44bf69 RS |
1873 | if (mips_pic != NO_PIC) |
1874 | { | |
1875 | if (g_switch_seen && g_switch_value != 0) | |
1876 | as_bad (_("-G may not be used in position-independent code")); | |
1877 | g_switch_value = 0; | |
1878 | } | |
1879 | ||
fef14a42 | 1880 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch)) |
252b5132 RH |
1881 | as_warn (_("Could not set architecture and machine")); |
1882 | ||
252b5132 RH |
1883 | op_hash = hash_new (); |
1884 | ||
1885 | for (i = 0; i < NUMOPCODES;) | |
1886 | { | |
1887 | const char *name = mips_opcodes[i].name; | |
1888 | ||
17a2f251 | 1889 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
1890 | if (retval != NULL) |
1891 | { | |
1892 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
1893 | mips_opcodes[i].name, retval); | |
1894 | /* Probably a memory allocation problem? Give up now. */ | |
1895 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1896 | } | |
1897 | do | |
1898 | { | |
1899 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
1900 | { | |
1901 | if (!validate_mips_insn (&mips_opcodes[i])) | |
1902 | broken = 1; | |
1e915849 RS |
1903 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
1904 | { | |
1905 | create_insn (&nop_insn, mips_opcodes + i); | |
1906 | nop_insn.fixed_p = 1; | |
1907 | } | |
252b5132 RH |
1908 | } |
1909 | ++i; | |
1910 | } | |
1911 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
1912 | } | |
1913 | ||
1914 | mips16_op_hash = hash_new (); | |
1915 | ||
1916 | i = 0; | |
1917 | while (i < bfd_mips16_num_opcodes) | |
1918 | { | |
1919 | const char *name = mips16_opcodes[i].name; | |
1920 | ||
17a2f251 | 1921 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
1922 | if (retval != NULL) |
1923 | as_fatal (_("internal: can't hash `%s': %s"), | |
1924 | mips16_opcodes[i].name, retval); | |
1925 | do | |
1926 | { | |
1927 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
1928 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
1929 | != mips16_opcodes[i].match)) | |
1930 | { | |
1931 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
1932 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
1933 | broken = 1; | |
1934 | } | |
1e915849 RS |
1935 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
1936 | { | |
1937 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
1938 | mips16_nop_insn.fixed_p = 1; | |
1939 | } | |
252b5132 RH |
1940 | ++i; |
1941 | } | |
1942 | while (i < bfd_mips16_num_opcodes | |
1943 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
1944 | } | |
1945 | ||
1946 | if (broken) | |
1947 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1948 | ||
1949 | /* We add all the general register names to the symbol table. This | |
1950 | helps us detect invalid uses of them. */ | |
707bfff6 TS |
1951 | for (i = 0; reg_names[i].name; i++) |
1952 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, | |
8fc4ee9b | 1953 | reg_names[i].num, /* & RNUM_MASK, */ |
707bfff6 TS |
1954 | &zero_address_frag)); |
1955 | if (HAVE_NEWABI) | |
1956 | for (i = 0; reg_names_n32n64[i].name; i++) | |
1957 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, | |
8fc4ee9b | 1958 | reg_names_n32n64[i].num, /* & RNUM_MASK, */ |
252b5132 | 1959 | &zero_address_frag)); |
707bfff6 TS |
1960 | else |
1961 | for (i = 0; reg_names_o32[i].name; i++) | |
1962 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, | |
8fc4ee9b | 1963 | reg_names_o32[i].num, /* & RNUM_MASK, */ |
6047c971 | 1964 | &zero_address_frag)); |
6047c971 | 1965 | |
7d10b47d | 1966 | mips_no_prev_insn (); |
252b5132 RH |
1967 | |
1968 | mips_gprmask = 0; | |
1969 | mips_cprmask[0] = 0; | |
1970 | mips_cprmask[1] = 0; | |
1971 | mips_cprmask[2] = 0; | |
1972 | mips_cprmask[3] = 0; | |
1973 | ||
1974 | /* set the default alignment for the text section (2**2) */ | |
1975 | record_alignment (text_section, 2); | |
1976 | ||
4d0d148d | 1977 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 1978 | |
707bfff6 | 1979 | #ifdef OBJ_ELF |
f43abd2b | 1980 | if (IS_ELF) |
252b5132 | 1981 | { |
0a44bf69 RS |
1982 | /* On a native system other than VxWorks, sections must be aligned |
1983 | to 16 byte boundaries. When configured for an embedded ELF | |
1984 | target, we don't bother. */ | |
c41e87e3 CF |
1985 | if (strncmp (TARGET_OS, "elf", 3) != 0 |
1986 | && strncmp (TARGET_OS, "vxworks", 7) != 0) | |
252b5132 RH |
1987 | { |
1988 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
1989 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
1990 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
1991 | } | |
1992 | ||
1993 | /* Create a .reginfo section for register masks and a .mdebug | |
1994 | section for debugging information. */ | |
1995 | { | |
1996 | segT seg; | |
1997 | subsegT subseg; | |
1998 | flagword flags; | |
1999 | segT sec; | |
2000 | ||
2001 | seg = now_seg; | |
2002 | subseg = now_subseg; | |
2003 | ||
2004 | /* The ABI says this section should be loaded so that the | |
2005 | running program can access it. However, we don't load it | |
2006 | if we are configured for an embedded target */ | |
2007 | flags = SEC_READONLY | SEC_DATA; | |
c41e87e3 | 2008 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
2009 | flags |= SEC_ALLOC | SEC_LOAD; |
2010 | ||
316f5878 | 2011 | if (mips_abi != N64_ABI) |
252b5132 RH |
2012 | { |
2013 | sec = subseg_new (".reginfo", (subsegT) 0); | |
2014 | ||
195325d2 TS |
2015 | bfd_set_section_flags (stdoutput, sec, flags); |
2016 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 2017 | |
252b5132 | 2018 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
252b5132 RH |
2019 | } |
2020 | else | |
2021 | { | |
2022 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
2023 | .reginfo section. */ | |
2024 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
2025 | bfd_set_section_flags (stdoutput, sec, flags); |
2026 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 2027 | |
252b5132 RH |
2028 | /* Set up the option header. */ |
2029 | { | |
2030 | Elf_Internal_Options opthdr; | |
2031 | char *f; | |
2032 | ||
2033 | opthdr.kind = ODK_REGINFO; | |
2034 | opthdr.size = (sizeof (Elf_External_Options) | |
2035 | + sizeof (Elf64_External_RegInfo)); | |
2036 | opthdr.section = 0; | |
2037 | opthdr.info = 0; | |
2038 | f = frag_more (sizeof (Elf_External_Options)); | |
2039 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
2040 | (Elf_External_Options *) f); | |
2041 | ||
2042 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
2043 | } | |
252b5132 RH |
2044 | } |
2045 | ||
2046 | if (ECOFF_DEBUGGING) | |
2047 | { | |
2048 | sec = subseg_new (".mdebug", (subsegT) 0); | |
2049 | (void) bfd_set_section_flags (stdoutput, sec, | |
2050 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2051 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
2052 | } | |
f43abd2b | 2053 | else if (mips_flag_pdr) |
ecb4347a DJ |
2054 | { |
2055 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
2056 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
2057 | SEC_READONLY | SEC_RELOC | |
2058 | | SEC_DEBUGGING); | |
2059 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
2060 | } | |
252b5132 RH |
2061 | |
2062 | subseg_set (seg, subseg); | |
2063 | } | |
2064 | } | |
707bfff6 | 2065 | #endif /* OBJ_ELF */ |
252b5132 RH |
2066 | |
2067 | if (! ECOFF_DEBUGGING) | |
2068 | md_obj_begin (); | |
71400594 RS |
2069 | |
2070 | if (mips_fix_vr4120) | |
2071 | init_vr4120_conflicts (); | |
252b5132 RH |
2072 | } |
2073 | ||
2074 | void | |
17a2f251 | 2075 | md_mips_end (void) |
252b5132 RH |
2076 | { |
2077 | if (! ECOFF_DEBUGGING) | |
2078 | md_obj_end (); | |
2079 | } | |
2080 | ||
2081 | void | |
17a2f251 | 2082 | md_assemble (char *str) |
252b5132 RH |
2083 | { |
2084 | struct mips_cl_insn insn; | |
f6688943 TS |
2085 | bfd_reloc_code_real_type unused_reloc[3] |
2086 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
2087 | |
2088 | imm_expr.X_op = O_absent; | |
5f74bc13 | 2089 | imm2_expr.X_op = O_absent; |
252b5132 | 2090 | offset_expr.X_op = O_absent; |
f6688943 TS |
2091 | imm_reloc[0] = BFD_RELOC_UNUSED; |
2092 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
2093 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
2094 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
2095 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
2096 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2097 | |
2098 | if (mips_opts.mips16) | |
2099 | mips16_ip (str, &insn); | |
2100 | else | |
2101 | { | |
2102 | mips_ip (str, &insn); | |
beae10d5 KH |
2103 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
2104 | str, insn.insn_opcode)); | |
252b5132 RH |
2105 | } |
2106 | ||
2107 | if (insn_error) | |
2108 | { | |
2109 | as_bad ("%s `%s'", insn_error, str); | |
2110 | return; | |
2111 | } | |
2112 | ||
2113 | if (insn.insn_mo->pinfo == INSN_MACRO) | |
2114 | { | |
584892a6 | 2115 | macro_start (); |
252b5132 RH |
2116 | if (mips_opts.mips16) |
2117 | mips16_macro (&insn); | |
2118 | else | |
2119 | macro (&insn); | |
584892a6 | 2120 | macro_end (); |
252b5132 RH |
2121 | } |
2122 | else | |
2123 | { | |
2124 | if (imm_expr.X_op != O_absent) | |
4d7206a2 | 2125 | append_insn (&insn, &imm_expr, imm_reloc); |
252b5132 | 2126 | else if (offset_expr.X_op != O_absent) |
4d7206a2 | 2127 | append_insn (&insn, &offset_expr, offset_reloc); |
252b5132 | 2128 | else |
4d7206a2 | 2129 | append_insn (&insn, NULL, unused_reloc); |
252b5132 RH |
2130 | } |
2131 | } | |
2132 | ||
738e5348 RS |
2133 | /* Convenience functions for abstracting away the differences between |
2134 | MIPS16 and non-MIPS16 relocations. */ | |
2135 | ||
2136 | static inline bfd_boolean | |
2137 | mips16_reloc_p (bfd_reloc_code_real_type reloc) | |
2138 | { | |
2139 | switch (reloc) | |
2140 | { | |
2141 | case BFD_RELOC_MIPS16_JMP: | |
2142 | case BFD_RELOC_MIPS16_GPREL: | |
2143 | case BFD_RELOC_MIPS16_GOT16: | |
2144 | case BFD_RELOC_MIPS16_CALL16: | |
2145 | case BFD_RELOC_MIPS16_HI16_S: | |
2146 | case BFD_RELOC_MIPS16_HI16: | |
2147 | case BFD_RELOC_MIPS16_LO16: | |
2148 | return TRUE; | |
2149 | ||
2150 | default: | |
2151 | return FALSE; | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | static inline bfd_boolean | |
2156 | got16_reloc_p (bfd_reloc_code_real_type reloc) | |
2157 | { | |
2158 | return reloc == BFD_RELOC_MIPS_GOT16 || reloc == BFD_RELOC_MIPS16_GOT16; | |
2159 | } | |
2160 | ||
2161 | static inline bfd_boolean | |
2162 | hi16_reloc_p (bfd_reloc_code_real_type reloc) | |
2163 | { | |
2164 | return reloc == BFD_RELOC_HI16_S || reloc == BFD_RELOC_MIPS16_HI16_S; | |
2165 | } | |
2166 | ||
2167 | static inline bfd_boolean | |
2168 | lo16_reloc_p (bfd_reloc_code_real_type reloc) | |
2169 | { | |
2170 | return reloc == BFD_RELOC_LO16 || reloc == BFD_RELOC_MIPS16_LO16; | |
2171 | } | |
2172 | ||
5919d012 | 2173 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
2174 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
2175 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
2176 | |
2177 | static inline bfd_boolean | |
17a2f251 | 2178 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 2179 | { |
3b91255e | 2180 | return (HAVE_IN_PLACE_ADDENDS |
738e5348 | 2181 | && (hi16_reloc_p (reloc) |
0a44bf69 RS |
2182 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); |
2183 | all GOT16 relocations evaluate to "G". */ | |
738e5348 RS |
2184 | || (got16_reloc_p (reloc) && mips_pic != VXWORKS_PIC))); |
2185 | } | |
2186 | ||
2187 | /* Return the type of %lo() reloc needed by RELOC, given that | |
2188 | reloc_needs_lo_p. */ | |
2189 | ||
2190 | static inline bfd_reloc_code_real_type | |
2191 | matching_lo_reloc (bfd_reloc_code_real_type reloc) | |
2192 | { | |
2193 | return mips16_reloc_p (reloc) ? BFD_RELOC_MIPS16_LO16 : BFD_RELOC_LO16; | |
5919d012 RS |
2194 | } |
2195 | ||
2196 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
2197 | relocation. */ | |
2198 | ||
2199 | static inline bfd_boolean | |
17a2f251 | 2200 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
2201 | { |
2202 | return (fixp->fx_next != NULL | |
738e5348 | 2203 | && fixp->fx_next->fx_r_type == matching_lo_reloc (fixp->fx_r_type) |
5919d012 RS |
2204 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
2205 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
2206 | } | |
2207 | ||
252b5132 RH |
2208 | /* See whether instruction IP reads register REG. CLASS is the type |
2209 | of register. */ | |
2210 | ||
2211 | static int | |
71400594 | 2212 | insn_uses_reg (const struct mips_cl_insn *ip, unsigned int reg, |
17a2f251 | 2213 | enum mips_regclass class) |
252b5132 RH |
2214 | { |
2215 | if (class == MIPS16_REG) | |
2216 | { | |
2217 | assert (mips_opts.mips16); | |
2218 | reg = mips16_to_32_reg_map[reg]; | |
2219 | class = MIPS_GR_REG; | |
2220 | } | |
2221 | ||
85b51719 TS |
2222 | /* Don't report on general register ZERO, since it never changes. */ |
2223 | if (class == MIPS_GR_REG && reg == ZERO) | |
252b5132 RH |
2224 | return 0; |
2225 | ||
2226 | if (class == MIPS_FP_REG) | |
2227 | { | |
2228 | assert (! mips_opts.mips16); | |
2229 | /* If we are called with either $f0 or $f1, we must check $f0. | |
2230 | This is not optimal, because it will introduce an unnecessary | |
2231 | NOP between "lwc1 $f0" and "swc1 $f1". To fix this we would | |
2232 | need to distinguish reading both $f0 and $f1 or just one of | |
2233 | them. Note that we don't have to check the other way, | |
2234 | because there is no instruction that sets both $f0 and $f1 | |
2235 | and requires a delay. */ | |
2236 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_S) | |
bf12938e | 2237 | && ((EXTRACT_OPERAND (FS, *ip) & ~(unsigned) 1) |
252b5132 RH |
2238 | == (reg &~ (unsigned) 1))) |
2239 | return 1; | |
2240 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_T) | |
bf12938e | 2241 | && ((EXTRACT_OPERAND (FT, *ip) & ~(unsigned) 1) |
252b5132 RH |
2242 | == (reg &~ (unsigned) 1))) |
2243 | return 1; | |
2244 | } | |
2245 | else if (! mips_opts.mips16) | |
2246 | { | |
2247 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_S) | |
bf12938e | 2248 | && EXTRACT_OPERAND (RS, *ip) == reg) |
252b5132 RH |
2249 | return 1; |
2250 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_T) | |
bf12938e | 2251 | && EXTRACT_OPERAND (RT, *ip) == reg) |
252b5132 RH |
2252 | return 1; |
2253 | } | |
2254 | else | |
2255 | { | |
2256 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_X) | |
bf12938e | 2257 | && mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)] == reg) |
252b5132 RH |
2258 | return 1; |
2259 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Y) | |
bf12938e | 2260 | && mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)] == reg) |
252b5132 RH |
2261 | return 1; |
2262 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Z) | |
bf12938e | 2263 | && (mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip)] |
252b5132 RH |
2264 | == reg)) |
2265 | return 1; | |
2266 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_T) && reg == TREG) | |
2267 | return 1; | |
2268 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_SP) && reg == SP) | |
2269 | return 1; | |
2270 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_31) && reg == RA) | |
2271 | return 1; | |
2272 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_GPR_X) | |
bf12938e | 2273 | && MIPS16_EXTRACT_OPERAND (REGR32, *ip) == reg) |
252b5132 RH |
2274 | return 1; |
2275 | } | |
2276 | ||
2277 | return 0; | |
2278 | } | |
2279 | ||
2280 | /* This function returns true if modifying a register requires a | |
2281 | delay. */ | |
2282 | ||
2283 | static int | |
17a2f251 | 2284 | reg_needs_delay (unsigned int reg) |
252b5132 RH |
2285 | { |
2286 | unsigned long prev_pinfo; | |
2287 | ||
47e39b9d | 2288 | prev_pinfo = history[0].insn_mo->pinfo; |
252b5132 | 2289 | if (! mips_opts.noreorder |
81912461 ILT |
2290 | && (((prev_pinfo & INSN_LOAD_MEMORY_DELAY) |
2291 | && ! gpr_interlocks) | |
2292 | || ((prev_pinfo & INSN_LOAD_COPROC_DELAY) | |
2293 | && ! cop_interlocks))) | |
252b5132 | 2294 | { |
81912461 ILT |
2295 | /* A load from a coprocessor or from memory. All load delays |
2296 | delay the use of general register rt for one instruction. */ | |
bdaaa2e1 | 2297 | /* Itbl support may require additional care here. */ |
252b5132 | 2298 | know (prev_pinfo & INSN_WRITE_GPR_T); |
bf12938e | 2299 | if (reg == EXTRACT_OPERAND (RT, history[0])) |
252b5132 RH |
2300 | return 1; |
2301 | } | |
2302 | ||
2303 | return 0; | |
2304 | } | |
2305 | ||
404a8071 RS |
2306 | /* Move all labels in insn_labels to the current insertion point. */ |
2307 | ||
2308 | static void | |
2309 | mips_move_labels (void) | |
2310 | { | |
a8dbcb85 | 2311 | segment_info_type *si = seg_info (now_seg); |
404a8071 RS |
2312 | struct insn_label_list *l; |
2313 | valueT val; | |
2314 | ||
a8dbcb85 | 2315 | for (l = si->label_list; l != NULL; l = l->next) |
404a8071 RS |
2316 | { |
2317 | assert (S_GET_SEGMENT (l->label) == now_seg); | |
2318 | symbol_set_frag (l->label, frag_now); | |
2319 | val = (valueT) frag_now_fix (); | |
2320 | /* mips16 text labels are stored as odd. */ | |
2321 | if (mips_opts.mips16) | |
2322 | ++val; | |
2323 | S_SET_VALUE (l->label, val); | |
2324 | } | |
2325 | } | |
2326 | ||
5f0fe04b TS |
2327 | static bfd_boolean |
2328 | s_is_linkonce (symbolS *sym, segT from_seg) | |
2329 | { | |
2330 | bfd_boolean linkonce = FALSE; | |
2331 | segT symseg = S_GET_SEGMENT (sym); | |
2332 | ||
2333 | if (symseg != from_seg && !S_IS_LOCAL (sym)) | |
2334 | { | |
2335 | if ((bfd_get_section_flags (stdoutput, symseg) & SEC_LINK_ONCE)) | |
2336 | linkonce = TRUE; | |
2337 | #ifdef OBJ_ELF | |
2338 | /* The GNU toolchain uses an extension for ELF: a section | |
2339 | beginning with the magic string .gnu.linkonce is a | |
2340 | linkonce section. */ | |
2341 | if (strncmp (segment_name (symseg), ".gnu.linkonce", | |
2342 | sizeof ".gnu.linkonce" - 1) == 0) | |
2343 | linkonce = TRUE; | |
2344 | #endif | |
2345 | } | |
2346 | return linkonce; | |
2347 | } | |
2348 | ||
252b5132 RH |
2349 | /* Mark instruction labels in mips16 mode. This permits the linker to |
2350 | handle them specially, such as generating jalx instructions when | |
2351 | needed. We also make them odd for the duration of the assembly, in | |
2352 | order to generate the right sort of code. We will make them even | |
2353 | in the adjust_symtab routine, while leaving them marked. This is | |
2354 | convenient for the debugger and the disassembler. The linker knows | |
2355 | to make them odd again. */ | |
2356 | ||
2357 | static void | |
17a2f251 | 2358 | mips16_mark_labels (void) |
252b5132 | 2359 | { |
a8dbcb85 TS |
2360 | segment_info_type *si = seg_info (now_seg); |
2361 | struct insn_label_list *l; | |
252b5132 | 2362 | |
a8dbcb85 TS |
2363 | if (!mips_opts.mips16) |
2364 | return; | |
2365 | ||
2366 | for (l = si->label_list; l != NULL; l = l->next) | |
2367 | { | |
2368 | symbolS *label = l->label; | |
2369 | ||
2370 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
f43abd2b | 2371 | if (IS_ELF) |
30c09090 | 2372 | S_SET_OTHER (label, ELF_ST_SET_MIPS16 (S_GET_OTHER (label))); |
252b5132 | 2373 | #endif |
5f0fe04b TS |
2374 | if ((S_GET_VALUE (label) & 1) == 0 |
2375 | /* Don't adjust the address if the label is global or weak, or | |
2376 | in a link-once section, since we'll be emitting symbol reloc | |
2377 | references to it which will be patched up by the linker, and | |
2378 | the final value of the symbol may or may not be MIPS16. */ | |
2379 | && ! S_IS_WEAK (label) | |
2380 | && ! S_IS_EXTERNAL (label) | |
2381 | && ! s_is_linkonce (label, now_seg)) | |
a8dbcb85 | 2382 | S_SET_VALUE (label, S_GET_VALUE (label) | 1); |
252b5132 RH |
2383 | } |
2384 | } | |
2385 | ||
4d7206a2 RS |
2386 | /* End the current frag. Make it a variant frag and record the |
2387 | relaxation info. */ | |
2388 | ||
2389 | static void | |
2390 | relax_close_frag (void) | |
2391 | { | |
584892a6 | 2392 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 2393 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 2394 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
2395 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
2396 | ||
2397 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
2398 | mips_relax.first_fixup = 0; | |
2399 | } | |
2400 | ||
2401 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
2402 | See the comment above RELAX_ENCODE for more details. */ | |
2403 | ||
2404 | static void | |
2405 | relax_start (symbolS *symbol) | |
2406 | { | |
2407 | assert (mips_relax.sequence == 0); | |
2408 | mips_relax.sequence = 1; | |
2409 | mips_relax.symbol = symbol; | |
2410 | } | |
2411 | ||
2412 | /* Start generating the second version of a relaxable sequence. | |
2413 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
2414 | |
2415 | static void | |
4d7206a2 RS |
2416 | relax_switch (void) |
2417 | { | |
2418 | assert (mips_relax.sequence == 1); | |
2419 | mips_relax.sequence = 2; | |
2420 | } | |
2421 | ||
2422 | /* End the current relaxable sequence. */ | |
2423 | ||
2424 | static void | |
2425 | relax_end (void) | |
2426 | { | |
2427 | assert (mips_relax.sequence == 2); | |
2428 | relax_close_frag (); | |
2429 | mips_relax.sequence = 0; | |
2430 | } | |
2431 | ||
71400594 RS |
2432 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
2433 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
2434 | by VR4120 errata. */ | |
4d7206a2 | 2435 | |
71400594 RS |
2436 | static unsigned int |
2437 | classify_vr4120_insn (const char *name) | |
252b5132 | 2438 | { |
71400594 RS |
2439 | if (strncmp (name, "macc", 4) == 0) |
2440 | return FIX_VR4120_MACC; | |
2441 | if (strncmp (name, "dmacc", 5) == 0) | |
2442 | return FIX_VR4120_DMACC; | |
2443 | if (strncmp (name, "mult", 4) == 0) | |
2444 | return FIX_VR4120_MULT; | |
2445 | if (strncmp (name, "dmult", 5) == 0) | |
2446 | return FIX_VR4120_DMULT; | |
2447 | if (strstr (name, "div")) | |
2448 | return FIX_VR4120_DIV; | |
2449 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
2450 | return FIX_VR4120_MTHILO; | |
2451 | return NUM_FIX_VR4120_CLASSES; | |
2452 | } | |
252b5132 | 2453 | |
71400594 RS |
2454 | /* Return the number of instructions that must separate INSN1 and INSN2, |
2455 | where INSN1 is the earlier instruction. Return the worst-case value | |
2456 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 2457 | |
71400594 RS |
2458 | static unsigned int |
2459 | insns_between (const struct mips_cl_insn *insn1, | |
2460 | const struct mips_cl_insn *insn2) | |
2461 | { | |
2462 | unsigned long pinfo1, pinfo2; | |
2463 | ||
2464 | /* This function needs to know which pinfo flags are set for INSN2 | |
2465 | and which registers INSN2 uses. The former is stored in PINFO2 and | |
2466 | the latter is tested via INSN2_USES_REG. If INSN2 is null, PINFO2 | |
2467 | will have every flag set and INSN2_USES_REG will always return true. */ | |
2468 | pinfo1 = insn1->insn_mo->pinfo; | |
2469 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 2470 | |
71400594 RS |
2471 | #define INSN2_USES_REG(REG, CLASS) \ |
2472 | (insn2 == NULL || insn_uses_reg (insn2, REG, CLASS)) | |
2473 | ||
2474 | /* For most targets, write-after-read dependencies on the HI and LO | |
2475 | registers must be separated by at least two instructions. */ | |
2476 | if (!hilo_interlocks) | |
252b5132 | 2477 | { |
71400594 RS |
2478 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
2479 | return 2; | |
2480 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
2481 | return 2; | |
2482 | } | |
2483 | ||
2484 | /* If we're working around r7000 errata, there must be two instructions | |
2485 | between an mfhi or mflo and any instruction that uses the result. */ | |
2486 | if (mips_7000_hilo_fix | |
2487 | && MF_HILO_INSN (pinfo1) | |
2488 | && INSN2_USES_REG (EXTRACT_OPERAND (RD, *insn1), MIPS_GR_REG)) | |
2489 | return 2; | |
2490 | ||
2491 | /* If working around VR4120 errata, check for combinations that need | |
2492 | a single intervening instruction. */ | |
2493 | if (mips_fix_vr4120) | |
2494 | { | |
2495 | unsigned int class1, class2; | |
252b5132 | 2496 | |
71400594 RS |
2497 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
2498 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 2499 | { |
71400594 RS |
2500 | if (insn2 == NULL) |
2501 | return 1; | |
2502 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
2503 | if (vr4120_conflicts[class1] & (1 << class2)) | |
2504 | return 1; | |
252b5132 | 2505 | } |
71400594 RS |
2506 | } |
2507 | ||
2508 | if (!mips_opts.mips16) | |
2509 | { | |
2510 | /* Check for GPR or coprocessor load delays. All such delays | |
2511 | are on the RT register. */ | |
2512 | /* Itbl support may require additional care here. */ | |
2513 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY_DELAY)) | |
2514 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC_DELAY))) | |
252b5132 | 2515 | { |
71400594 RS |
2516 | know (pinfo1 & INSN_WRITE_GPR_T); |
2517 | if (INSN2_USES_REG (EXTRACT_OPERAND (RT, *insn1), MIPS_GR_REG)) | |
2518 | return 1; | |
2519 | } | |
2520 | ||
2521 | /* Check for generic coprocessor hazards. | |
2522 | ||
2523 | This case is not handled very well. There is no special | |
2524 | knowledge of CP0 handling, and the coprocessors other than | |
2525 | the floating point unit are not distinguished at all. */ | |
2526 | /* Itbl support may require additional care here. FIXME! | |
2527 | Need to modify this to include knowledge about | |
2528 | user specified delays! */ | |
2529 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE_DELAY)) | |
2530 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) | |
2531 | { | |
2532 | /* Handle cases where INSN1 writes to a known general coprocessor | |
2533 | register. There must be a one instruction delay before INSN2 | |
2534 | if INSN2 reads that register, otherwise no delay is needed. */ | |
2535 | if (pinfo1 & INSN_WRITE_FPR_T) | |
252b5132 | 2536 | { |
71400594 RS |
2537 | if (INSN2_USES_REG (EXTRACT_OPERAND (FT, *insn1), MIPS_FP_REG)) |
2538 | return 1; | |
252b5132 | 2539 | } |
71400594 | 2540 | else if (pinfo1 & INSN_WRITE_FPR_S) |
252b5132 | 2541 | { |
71400594 RS |
2542 | if (INSN2_USES_REG (EXTRACT_OPERAND (FS, *insn1), MIPS_FP_REG)) |
2543 | return 1; | |
252b5132 RH |
2544 | } |
2545 | else | |
2546 | { | |
71400594 RS |
2547 | /* Read-after-write dependencies on the control registers |
2548 | require a two-instruction gap. */ | |
2549 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
2550 | && (pinfo2 & INSN_READ_COND_CODE)) | |
2551 | return 2; | |
2552 | ||
2553 | /* We don't know exactly what INSN1 does. If INSN2 is | |
2554 | also a coprocessor instruction, assume there must be | |
2555 | a one instruction gap. */ | |
2556 | if (pinfo2 & INSN_COP) | |
2557 | return 1; | |
252b5132 RH |
2558 | } |
2559 | } | |
6b76fefe | 2560 | |
71400594 RS |
2561 | /* Check for read-after-write dependencies on the coprocessor |
2562 | control registers in cases where INSN1 does not need a general | |
2563 | coprocessor delay. This means that INSN1 is a floating point | |
2564 | comparison instruction. */ | |
2565 | /* Itbl support may require additional care here. */ | |
2566 | else if (!cop_interlocks | |
2567 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
2568 | && (pinfo2 & INSN_READ_COND_CODE)) | |
2569 | return 1; | |
2570 | } | |
6b76fefe | 2571 | |
71400594 | 2572 | #undef INSN2_USES_REG |
6b76fefe | 2573 | |
71400594 RS |
2574 | return 0; |
2575 | } | |
6b76fefe | 2576 | |
7d8e00cf RS |
2577 | /* Return the number of nops that would be needed to work around the |
2578 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
2579 | the MAX_VR4130_NOPS instructions described by HISTORY. */ | |
2580 | ||
2581 | static int | |
2582 | nops_for_vr4130 (const struct mips_cl_insn *history, | |
2583 | const struct mips_cl_insn *insn) | |
2584 | { | |
2585 | int i, j, reg; | |
2586 | ||
2587 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
2588 | are not affected by the errata. */ | |
2589 | if (insn != 0 | |
2590 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
2591 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
2592 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
2593 | return 0; | |
2594 | ||
2595 | /* Search for the first MFLO or MFHI. */ | |
2596 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
2597 | if (!history[i].noreorder_p && MF_HILO_INSN (history[i].insn_mo->pinfo)) | |
2598 | { | |
2599 | /* Extract the destination register. */ | |
2600 | if (mips_opts.mips16) | |
2601 | reg = mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, history[i])]; | |
2602 | else | |
2603 | reg = EXTRACT_OPERAND (RD, history[i]); | |
2604 | ||
2605 | /* No nops are needed if INSN reads that register. */ | |
2606 | if (insn != NULL && insn_uses_reg (insn, reg, MIPS_GR_REG)) | |
2607 | return 0; | |
2608 | ||
2609 | /* ...or if any of the intervening instructions do. */ | |
2610 | for (j = 0; j < i; j++) | |
2611 | if (insn_uses_reg (&history[j], reg, MIPS_GR_REG)) | |
2612 | return 0; | |
2613 | ||
2614 | return MAX_VR4130_NOPS - i; | |
2615 | } | |
2616 | return 0; | |
2617 | } | |
2618 | ||
71400594 RS |
2619 | /* Return the number of nops that would be needed if instruction INSN |
2620 | immediately followed the MAX_NOPS instructions given by HISTORY, | |
2621 | where HISTORY[0] is the most recent instruction. If INSN is null, | |
2622 | return the worse-case number of nops for any instruction. */ | |
bdaaa2e1 | 2623 | |
71400594 RS |
2624 | static int |
2625 | nops_for_insn (const struct mips_cl_insn *history, | |
2626 | const struct mips_cl_insn *insn) | |
2627 | { | |
2628 | int i, nops, tmp_nops; | |
bdaaa2e1 | 2629 | |
71400594 | 2630 | nops = 0; |
7d8e00cf | 2631 | for (i = 0; i < MAX_DELAY_NOPS; i++) |
71400594 RS |
2632 | if (!history[i].noreorder_p) |
2633 | { | |
2634 | tmp_nops = insns_between (history + i, insn) - i; | |
2635 | if (tmp_nops > nops) | |
2636 | nops = tmp_nops; | |
2637 | } | |
7d8e00cf RS |
2638 | |
2639 | if (mips_fix_vr4130) | |
2640 | { | |
2641 | tmp_nops = nops_for_vr4130 (history, insn); | |
2642 | if (tmp_nops > nops) | |
2643 | nops = tmp_nops; | |
2644 | } | |
2645 | ||
71400594 RS |
2646 | return nops; |
2647 | } | |
252b5132 | 2648 | |
71400594 RS |
2649 | /* The variable arguments provide NUM_INSNS extra instructions that |
2650 | might be added to HISTORY. Return the largest number of nops that | |
2651 | would be needed after the extended sequence. */ | |
252b5132 | 2652 | |
71400594 RS |
2653 | static int |
2654 | nops_for_sequence (int num_insns, const struct mips_cl_insn *history, ...) | |
2655 | { | |
2656 | va_list args; | |
2657 | struct mips_cl_insn buffer[MAX_NOPS]; | |
2658 | struct mips_cl_insn *cursor; | |
2659 | int nops; | |
2660 | ||
2661 | va_start (args, history); | |
2662 | cursor = buffer + num_insns; | |
2663 | memcpy (cursor, history, (MAX_NOPS - num_insns) * sizeof (*cursor)); | |
2664 | while (cursor > buffer) | |
2665 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
2666 | ||
2667 | nops = nops_for_insn (buffer, NULL); | |
2668 | va_end (args); | |
2669 | return nops; | |
2670 | } | |
252b5132 | 2671 | |
71400594 RS |
2672 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
2673 | worst-case delay for the branch target. */ | |
252b5132 | 2674 | |
71400594 RS |
2675 | static int |
2676 | nops_for_insn_or_target (const struct mips_cl_insn *history, | |
2677 | const struct mips_cl_insn *insn) | |
2678 | { | |
2679 | int nops, tmp_nops; | |
60b63b72 | 2680 | |
71400594 RS |
2681 | nops = nops_for_insn (history, insn); |
2682 | if (insn->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY | |
2683 | | INSN_COND_BRANCH_DELAY | |
2684 | | INSN_COND_BRANCH_LIKELY)) | |
2685 | { | |
2686 | tmp_nops = nops_for_sequence (2, history, insn, NOP_INSN); | |
2687 | if (tmp_nops > nops) | |
2688 | nops = tmp_nops; | |
2689 | } | |
2690 | else if (mips_opts.mips16 && (insn->insn_mo->pinfo & MIPS16_INSN_BRANCH)) | |
2691 | { | |
2692 | tmp_nops = nops_for_sequence (1, history, insn); | |
2693 | if (tmp_nops > nops) | |
2694 | nops = tmp_nops; | |
2695 | } | |
2696 | return nops; | |
2697 | } | |
2698 | ||
2699 | /* Output an instruction. IP is the instruction information. | |
2700 | ADDRESS_EXPR is an operand of the instruction to be used with | |
2701 | RELOC_TYPE. */ | |
2702 | ||
2703 | static void | |
2704 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
2705 | bfd_reloc_code_real_type *reloc_type) | |
2706 | { | |
3994f87e | 2707 | unsigned long prev_pinfo, pinfo; |
71400594 RS |
2708 | relax_stateT prev_insn_frag_type = 0; |
2709 | bfd_boolean relaxed_branch = FALSE; | |
a8dbcb85 | 2710 | segment_info_type *si = seg_info (now_seg); |
71400594 RS |
2711 | |
2712 | /* Mark instruction labels in mips16 mode. */ | |
2713 | mips16_mark_labels (); | |
2714 | ||
2715 | prev_pinfo = history[0].insn_mo->pinfo; | |
2716 | pinfo = ip->insn_mo->pinfo; | |
2717 | ||
2718 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) | |
2719 | { | |
2720 | /* There are a lot of optimizations we could do that we don't. | |
2721 | In particular, we do not, in general, reorder instructions. | |
2722 | If you use gcc with optimization, it will reorder | |
2723 | instructions and generally do much more optimization then we | |
2724 | do here; repeating all that work in the assembler would only | |
2725 | benefit hand written assembly code, and does not seem worth | |
2726 | it. */ | |
2727 | int nops = (mips_optimize == 0 | |
2728 | ? nops_for_insn (history, NULL) | |
2729 | : nops_for_insn_or_target (history, ip)); | |
2730 | if (nops > 0) | |
252b5132 RH |
2731 | { |
2732 | fragS *old_frag; | |
2733 | unsigned long old_frag_offset; | |
2734 | int i; | |
252b5132 RH |
2735 | |
2736 | old_frag = frag_now; | |
2737 | old_frag_offset = frag_now_fix (); | |
2738 | ||
2739 | for (i = 0; i < nops; i++) | |
2740 | emit_nop (); | |
2741 | ||
2742 | if (listing) | |
2743 | { | |
2744 | listing_prev_line (); | |
2745 | /* We may be at the start of a variant frag. In case we | |
2746 | are, make sure there is enough space for the frag | |
2747 | after the frags created by listing_prev_line. The | |
2748 | argument to frag_grow here must be at least as large | |
2749 | as the argument to all other calls to frag_grow in | |
2750 | this file. We don't have to worry about being in the | |
2751 | middle of a variant frag, because the variants insert | |
2752 | all needed nop instructions themselves. */ | |
2753 | frag_grow (40); | |
2754 | } | |
2755 | ||
404a8071 | 2756 | mips_move_labels (); |
252b5132 RH |
2757 | |
2758 | #ifndef NO_ECOFF_DEBUGGING | |
2759 | if (ECOFF_DEBUGGING) | |
2760 | ecoff_fix_loc (old_frag, old_frag_offset); | |
2761 | #endif | |
2762 | } | |
71400594 RS |
2763 | } |
2764 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
2765 | { | |
2766 | /* Work out how many nops in prev_nop_frag are needed by IP. */ | |
2767 | int nops = nops_for_insn_or_target (history, ip); | |
2768 | assert (nops <= prev_nop_frag_holds); | |
252b5132 | 2769 | |
71400594 RS |
2770 | /* Enforce NOPS as a minimum. */ |
2771 | if (nops > prev_nop_frag_required) | |
2772 | prev_nop_frag_required = nops; | |
252b5132 | 2773 | |
71400594 RS |
2774 | if (prev_nop_frag_holds == prev_nop_frag_required) |
2775 | { | |
2776 | /* Settle for the current number of nops. Update the history | |
2777 | accordingly (for the benefit of any future .set reorder code). */ | |
2778 | prev_nop_frag = NULL; | |
2779 | insert_into_history (prev_nop_frag_since, | |
2780 | prev_nop_frag_holds, NOP_INSN); | |
2781 | } | |
2782 | else | |
2783 | { | |
2784 | /* Allow this instruction to replace one of the nops that was | |
2785 | tentatively added to prev_nop_frag. */ | |
2786 | prev_nop_frag->fr_fix -= mips_opts.mips16 ? 2 : 4; | |
2787 | prev_nop_frag_holds--; | |
2788 | prev_nop_frag_since++; | |
252b5132 RH |
2789 | } |
2790 | } | |
2791 | ||
58e2ea4d MR |
2792 | #ifdef OBJ_ELF |
2793 | /* The value passed to dwarf2_emit_insn is the distance between | |
2794 | the beginning of the current instruction and the address that | |
2795 | should be recorded in the debug tables. For MIPS16 debug info | |
2796 | we want to use ISA-encoded addresses, so we pass -1 for an | |
2797 | address higher by one than the current. */ | |
2798 | dwarf2_emit_insn (mips_opts.mips16 ? -1 : 0); | |
2799 | #endif | |
2800 | ||
895921c9 | 2801 | /* Record the frag type before frag_var. */ |
47e39b9d RS |
2802 | if (history[0].frag) |
2803 | prev_insn_frag_type = history[0].frag->fr_type; | |
895921c9 | 2804 | |
4d7206a2 | 2805 | if (address_expr |
0b25d3e6 | 2806 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
4a6a3df4 AO |
2807 | && (pinfo & INSN_UNCOND_BRANCH_DELAY || pinfo & INSN_COND_BRANCH_DELAY |
2808 | || pinfo & INSN_COND_BRANCH_LIKELY) | |
2809 | && mips_relax_branch | |
2810 | /* Don't try branch relaxation within .set nomacro, or within | |
2811 | .set noat if we use $at for PIC computations. If it turns | |
2812 | out that the branch was out-of-range, we'll get an error. */ | |
2813 | && !mips_opts.warn_about_macros | |
741fe287 | 2814 | && (mips_opts.at || mips_pic == NO_PIC) |
4a6a3df4 AO |
2815 | && !mips_opts.mips16) |
2816 | { | |
895921c9 | 2817 | relaxed_branch = TRUE; |
1e915849 RS |
2818 | add_relaxed_insn (ip, (relaxed_branch_length |
2819 | (NULL, NULL, | |
2820 | (pinfo & INSN_UNCOND_BRANCH_DELAY) ? -1 | |
2821 | : (pinfo & INSN_COND_BRANCH_LIKELY) ? 1 | |
2822 | : 0)), 4, | |
2823 | RELAX_BRANCH_ENCODE | |
2824 | (pinfo & INSN_UNCOND_BRANCH_DELAY, | |
2825 | pinfo & INSN_COND_BRANCH_LIKELY, | |
2826 | pinfo & INSN_WRITE_GPR_31, | |
2827 | 0), | |
2828 | address_expr->X_add_symbol, | |
2829 | address_expr->X_add_number); | |
4a6a3df4 AO |
2830 | *reloc_type = BFD_RELOC_UNUSED; |
2831 | } | |
2832 | else if (*reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
2833 | { |
2834 | /* We need to set up a variant frag. */ | |
2835 | assert (mips_opts.mips16 && address_expr != NULL); | |
1e915849 RS |
2836 | add_relaxed_insn (ip, 4, 0, |
2837 | RELAX_MIPS16_ENCODE | |
2838 | (*reloc_type - BFD_RELOC_UNUSED, | |
2839 | mips16_small, mips16_ext, | |
2840 | prev_pinfo & INSN_UNCOND_BRANCH_DELAY, | |
2841 | history[0].mips16_absolute_jump_p), | |
2842 | make_expr_symbol (address_expr), 0); | |
252b5132 | 2843 | } |
252b5132 RH |
2844 | else if (mips_opts.mips16 |
2845 | && ! ip->use_extend | |
f6688943 | 2846 | && *reloc_type != BFD_RELOC_MIPS16_JMP) |
9497f5ac | 2847 | { |
b8ee1a6e DU |
2848 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) == 0) |
2849 | /* Make sure there is enough room to swap this instruction with | |
2850 | a following jump instruction. */ | |
2851 | frag_grow (6); | |
1e915849 | 2852 | add_fixed_insn (ip); |
252b5132 RH |
2853 | } |
2854 | else | |
2855 | { | |
2856 | if (mips_opts.mips16 | |
2857 | && mips_opts.noreorder | |
2858 | && (prev_pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) | |
2859 | as_warn (_("extended instruction in delay slot")); | |
2860 | ||
4d7206a2 RS |
2861 | if (mips_relax.sequence) |
2862 | { | |
2863 | /* If we've reached the end of this frag, turn it into a variant | |
2864 | frag and record the information for the instructions we've | |
2865 | written so far. */ | |
2866 | if (frag_room () < 4) | |
2867 | relax_close_frag (); | |
2868 | mips_relax.sizes[mips_relax.sequence - 1] += 4; | |
2869 | } | |
2870 | ||
584892a6 RS |
2871 | if (mips_relax.sequence != 2) |
2872 | mips_macro_warning.sizes[0] += 4; | |
2873 | if (mips_relax.sequence != 1) | |
2874 | mips_macro_warning.sizes[1] += 4; | |
2875 | ||
1e915849 RS |
2876 | if (mips_opts.mips16) |
2877 | { | |
2878 | ip->fixed_p = 1; | |
2879 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
2880 | } | |
2881 | add_fixed_insn (ip); | |
252b5132 RH |
2882 | } |
2883 | ||
01a3f561 | 2884 | if (address_expr != NULL && *reloc_type <= BFD_RELOC_UNUSED) |
252b5132 RH |
2885 | { |
2886 | if (address_expr->X_op == O_constant) | |
2887 | { | |
f17c130b | 2888 | unsigned int tmp; |
f6688943 TS |
2889 | |
2890 | switch (*reloc_type) | |
252b5132 RH |
2891 | { |
2892 | case BFD_RELOC_32: | |
2893 | ip->insn_opcode |= address_expr->X_add_number; | |
2894 | break; | |
2895 | ||
f6688943 | 2896 | case BFD_RELOC_MIPS_HIGHEST: |
f17c130b AM |
2897 | tmp = (address_expr->X_add_number + 0x800080008000ull) >> 48; |
2898 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
2899 | break; |
2900 | ||
2901 | case BFD_RELOC_MIPS_HIGHER: | |
f17c130b AM |
2902 | tmp = (address_expr->X_add_number + 0x80008000ull) >> 32; |
2903 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
2904 | break; |
2905 | ||
2906 | case BFD_RELOC_HI16_S: | |
f17c130b AM |
2907 | tmp = (address_expr->X_add_number + 0x8000) >> 16; |
2908 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
2909 | break; |
2910 | ||
2911 | case BFD_RELOC_HI16: | |
2912 | ip->insn_opcode |= (address_expr->X_add_number >> 16) & 0xffff; | |
2913 | break; | |
2914 | ||
01a3f561 | 2915 | case BFD_RELOC_UNUSED: |
252b5132 | 2916 | case BFD_RELOC_LO16: |
ed6fb7bd | 2917 | case BFD_RELOC_MIPS_GOT_DISP: |
252b5132 RH |
2918 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; |
2919 | break; | |
2920 | ||
2921 | case BFD_RELOC_MIPS_JMP: | |
2922 | if ((address_expr->X_add_number & 3) != 0) | |
2923 | as_bad (_("jump to misaligned address (0x%lx)"), | |
2924 | (unsigned long) address_expr->X_add_number); | |
2925 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0x3ffffff; | |
2926 | break; | |
2927 | ||
2928 | case BFD_RELOC_MIPS16_JMP: | |
2929 | if ((address_expr->X_add_number & 3) != 0) | |
2930 | as_bad (_("jump to misaligned address (0x%lx)"), | |
2931 | (unsigned long) address_expr->X_add_number); | |
2932 | ip->insn_opcode |= | |
2933 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
2934 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
2935 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
2936 | break; | |
2937 | ||
252b5132 | 2938 | case BFD_RELOC_16_PCREL_S2: |
bad36eac DJ |
2939 | if ((address_expr->X_add_number & 3) != 0) |
2940 | as_bad (_("branch to misaligned address (0x%lx)"), | |
2941 | (unsigned long) address_expr->X_add_number); | |
2942 | if (mips_relax_branch) | |
2943 | goto need_reloc; | |
2944 | if ((address_expr->X_add_number + 0x20000) & ~0x3ffff) | |
2945 | as_bad (_("branch address range overflow (0x%lx)"), | |
2946 | (unsigned long) address_expr->X_add_number); | |
2947 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0xffff; | |
2948 | break; | |
252b5132 RH |
2949 | |
2950 | default: | |
2951 | internalError (); | |
2952 | } | |
2953 | } | |
01a3f561 | 2954 | else if (*reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 2955 | need_reloc: |
4d7206a2 RS |
2956 | { |
2957 | reloc_howto_type *howto; | |
2958 | int i; | |
34ce925e | 2959 | |
4d7206a2 RS |
2960 | /* In a compound relocation, it is the final (outermost) |
2961 | operator that determines the relocated field. */ | |
2962 | for (i = 1; i < 3; i++) | |
2963 | if (reloc_type[i] == BFD_RELOC_UNUSED) | |
2964 | break; | |
34ce925e | 2965 | |
4d7206a2 | 2966 | howto = bfd_reloc_type_lookup (stdoutput, reloc_type[i - 1]); |
1e915849 RS |
2967 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
2968 | bfd_get_reloc_size (howto), | |
2969 | address_expr, | |
2970 | reloc_type[0] == BFD_RELOC_16_PCREL_S2, | |
2971 | reloc_type[0]); | |
4d7206a2 | 2972 | |
b314ec0e RS |
2973 | /* Tag symbols that have a R_MIPS16_26 relocation against them. */ |
2974 | if (reloc_type[0] == BFD_RELOC_MIPS16_JMP | |
2975 | && ip->fixp[0]->fx_addsy) | |
2976 | *symbol_get_tc (ip->fixp[0]->fx_addsy) = 1; | |
2977 | ||
4d7206a2 RS |
2978 | /* These relocations can have an addend that won't fit in |
2979 | 4 octets for 64bit assembly. */ | |
2980 | if (HAVE_64BIT_GPRS | |
2981 | && ! howto->partial_inplace | |
2982 | && (reloc_type[0] == BFD_RELOC_16 | |
2983 | || reloc_type[0] == BFD_RELOC_32 | |
2984 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
4d7206a2 RS |
2985 | || reloc_type[0] == BFD_RELOC_GPREL16 |
2986 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
2987 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
2988 | || reloc_type[0] == BFD_RELOC_64 | |
2989 | || reloc_type[0] == BFD_RELOC_CTOR | |
2990 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
2991 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
2992 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
2993 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
2994 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
d6f16593 MR |
2995 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT |
2996 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
738e5348 RS |
2997 | || hi16_reloc_p (reloc_type[0]) |
2998 | || lo16_reloc_p (reloc_type[0]))) | |
1e915849 | 2999 | ip->fixp[0]->fx_no_overflow = 1; |
4d7206a2 RS |
3000 | |
3001 | if (mips_relax.sequence) | |
3002 | { | |
3003 | if (mips_relax.first_fixup == 0) | |
1e915849 | 3004 | mips_relax.first_fixup = ip->fixp[0]; |
4d7206a2 RS |
3005 | } |
3006 | else if (reloc_needs_lo_p (*reloc_type)) | |
3007 | { | |
3008 | struct mips_hi_fixup *hi_fixup; | |
252b5132 | 3009 | |
4d7206a2 RS |
3010 | /* Reuse the last entry if it already has a matching %lo. */ |
3011 | hi_fixup = mips_hi_fixup_list; | |
3012 | if (hi_fixup == 0 | |
3013 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
3014 | { | |
3015 | hi_fixup = ((struct mips_hi_fixup *) | |
3016 | xmalloc (sizeof (struct mips_hi_fixup))); | |
3017 | hi_fixup->next = mips_hi_fixup_list; | |
3018 | mips_hi_fixup_list = hi_fixup; | |
252b5132 | 3019 | } |
1e915849 | 3020 | hi_fixup->fixp = ip->fixp[0]; |
4d7206a2 RS |
3021 | hi_fixup->seg = now_seg; |
3022 | } | |
f6688943 | 3023 | |
4d7206a2 RS |
3024 | /* Add fixups for the second and third relocations, if given. |
3025 | Note that the ABI allows the second relocation to be | |
3026 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
3027 | moment we only use RSS_UNDEF, but we could add support | |
3028 | for the others if it ever becomes necessary. */ | |
3029 | for (i = 1; i < 3; i++) | |
3030 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
3031 | { | |
1e915849 RS |
3032 | ip->fixp[i] = fix_new (ip->frag, ip->where, |
3033 | ip->fixp[0]->fx_size, NULL, 0, | |
3034 | FALSE, reloc_type[i]); | |
b1dca8ee RS |
3035 | |
3036 | /* Use fx_tcbit to mark compound relocs. */ | |
1e915849 RS |
3037 | ip->fixp[0]->fx_tcbit = 1; |
3038 | ip->fixp[i]->fx_tcbit = 1; | |
4d7206a2 | 3039 | } |
252b5132 RH |
3040 | } |
3041 | } | |
1e915849 | 3042 | install_insn (ip); |
252b5132 RH |
3043 | |
3044 | /* Update the register mask information. */ | |
3045 | if (! mips_opts.mips16) | |
3046 | { | |
3047 | if (pinfo & INSN_WRITE_GPR_D) | |
bf12938e | 3048 | mips_gprmask |= 1 << EXTRACT_OPERAND (RD, *ip); |
252b5132 | 3049 | if ((pinfo & (INSN_WRITE_GPR_T | INSN_READ_GPR_T)) != 0) |
bf12938e | 3050 | mips_gprmask |= 1 << EXTRACT_OPERAND (RT, *ip); |
252b5132 | 3051 | if (pinfo & INSN_READ_GPR_S) |
bf12938e | 3052 | mips_gprmask |= 1 << EXTRACT_OPERAND (RS, *ip); |
252b5132 | 3053 | if (pinfo & INSN_WRITE_GPR_31) |
f9419b05 | 3054 | mips_gprmask |= 1 << RA; |
252b5132 | 3055 | if (pinfo & INSN_WRITE_FPR_D) |
bf12938e | 3056 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FD, *ip); |
252b5132 | 3057 | if ((pinfo & (INSN_WRITE_FPR_S | INSN_READ_FPR_S)) != 0) |
bf12938e | 3058 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FS, *ip); |
252b5132 | 3059 | if ((pinfo & (INSN_WRITE_FPR_T | INSN_READ_FPR_T)) != 0) |
bf12938e | 3060 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FT, *ip); |
252b5132 | 3061 | if ((pinfo & INSN_READ_FPR_R) != 0) |
bf12938e | 3062 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FR, *ip); |
252b5132 RH |
3063 | if (pinfo & INSN_COP) |
3064 | { | |
bdaaa2e1 KH |
3065 | /* We don't keep enough information to sort these cases out. |
3066 | The itbl support does keep this information however, although | |
3067 | we currently don't support itbl fprmats as part of the cop | |
3068 | instruction. May want to add this support in the future. */ | |
252b5132 RH |
3069 | } |
3070 | /* Never set the bit for $0, which is always zero. */ | |
beae10d5 | 3071 | mips_gprmask &= ~1 << 0; |
252b5132 RH |
3072 | } |
3073 | else | |
3074 | { | |
3075 | if (pinfo & (MIPS16_INSN_WRITE_X | MIPS16_INSN_READ_X)) | |
bf12938e | 3076 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RX, *ip); |
252b5132 | 3077 | if (pinfo & (MIPS16_INSN_WRITE_Y | MIPS16_INSN_READ_Y)) |
bf12938e | 3078 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RY, *ip); |
252b5132 | 3079 | if (pinfo & MIPS16_INSN_WRITE_Z) |
bf12938e | 3080 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RZ, *ip); |
252b5132 RH |
3081 | if (pinfo & (MIPS16_INSN_WRITE_T | MIPS16_INSN_READ_T)) |
3082 | mips_gprmask |= 1 << TREG; | |
3083 | if (pinfo & (MIPS16_INSN_WRITE_SP | MIPS16_INSN_READ_SP)) | |
3084 | mips_gprmask |= 1 << SP; | |
3085 | if (pinfo & (MIPS16_INSN_WRITE_31 | MIPS16_INSN_READ_31)) | |
3086 | mips_gprmask |= 1 << RA; | |
3087 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
3088 | mips_gprmask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
3089 | if (pinfo & MIPS16_INSN_READ_Z) | |
bf12938e | 3090 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip); |
252b5132 | 3091 | if (pinfo & MIPS16_INSN_READ_GPR_X) |
bf12938e | 3092 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (REGR32, *ip); |
252b5132 RH |
3093 | } |
3094 | ||
4d7206a2 | 3095 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
252b5132 RH |
3096 | { |
3097 | /* Filling the branch delay slot is more complex. We try to | |
3098 | switch the branch with the previous instruction, which we can | |
3099 | do if the previous instruction does not set up a condition | |
3100 | that the branch tests and if the branch is not itself the | |
3101 | target of any branch. */ | |
3102 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) | |
3103 | || (pinfo & INSN_COND_BRANCH_DELAY)) | |
3104 | { | |
3105 | if (mips_optimize < 2 | |
3106 | /* If we have seen .set volatile or .set nomove, don't | |
3107 | optimize. */ | |
3108 | || mips_opts.nomove != 0 | |
a38419a5 RS |
3109 | /* We can't swap if the previous instruction's position |
3110 | is fixed. */ | |
3111 | || history[0].fixed_p | |
252b5132 RH |
3112 | /* If the previous previous insn was in a .set |
3113 | noreorder, we can't swap. Actually, the MIPS | |
3114 | assembler will swap in this situation. However, gcc | |
3115 | configured -with-gnu-as will generate code like | |
3116 | .set noreorder | |
3117 | lw $4,XXX | |
3118 | .set reorder | |
3119 | INSN | |
3120 | bne $4,$0,foo | |
3121 | in which we can not swap the bne and INSN. If gcc is | |
3122 | not configured -with-gnu-as, it does not output the | |
a38419a5 | 3123 | .set pseudo-ops. */ |
47e39b9d | 3124 | || history[1].noreorder_p |
252b5132 RH |
3125 | /* If the branch is itself the target of a branch, we |
3126 | can not swap. We cheat on this; all we check for is | |
3127 | whether there is a label on this instruction. If | |
3128 | there are any branches to anything other than a | |
3129 | label, users must use .set noreorder. */ | |
a8dbcb85 | 3130 | || si->label_list != NULL |
895921c9 MR |
3131 | /* If the previous instruction is in a variant frag |
3132 | other than this branch's one, we cannot do the swap. | |
3133 | This does not apply to the mips16, which uses variant | |
3134 | frags for different purposes. */ | |
252b5132 | 3135 | || (! mips_opts.mips16 |
895921c9 | 3136 | && prev_insn_frag_type == rs_machine_dependent) |
71400594 RS |
3137 | /* Check for conflicts between the branch and the instructions |
3138 | before the candidate delay slot. */ | |
3139 | || nops_for_insn (history + 1, ip) > 0 | |
3140 | /* Check for conflicts between the swapped sequence and the | |
3141 | target of the branch. */ | |
3142 | || nops_for_sequence (2, history + 1, ip, history) > 0 | |
252b5132 RH |
3143 | /* We do not swap with a trap instruction, since it |
3144 | complicates trap handlers to have the trap | |
3145 | instruction be in a delay slot. */ | |
3146 | || (prev_pinfo & INSN_TRAP) | |
3147 | /* If the branch reads a register that the previous | |
3148 | instruction sets, we can not swap. */ | |
3149 | || (! mips_opts.mips16 | |
3150 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
bf12938e | 3151 | && insn_uses_reg (ip, EXTRACT_OPERAND (RT, history[0]), |
252b5132 RH |
3152 | MIPS_GR_REG)) |
3153 | || (! mips_opts.mips16 | |
3154 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
bf12938e | 3155 | && insn_uses_reg (ip, EXTRACT_OPERAND (RD, history[0]), |
252b5132 RH |
3156 | MIPS_GR_REG)) |
3157 | || (mips_opts.mips16 | |
3158 | && (((prev_pinfo & MIPS16_INSN_WRITE_X) | |
bf12938e RS |
3159 | && (insn_uses_reg |
3160 | (ip, MIPS16_EXTRACT_OPERAND (RX, history[0]), | |
3161 | MIPS16_REG))) | |
252b5132 | 3162 | || ((prev_pinfo & MIPS16_INSN_WRITE_Y) |
bf12938e RS |
3163 | && (insn_uses_reg |
3164 | (ip, MIPS16_EXTRACT_OPERAND (RY, history[0]), | |
3165 | MIPS16_REG))) | |
252b5132 | 3166 | || ((prev_pinfo & MIPS16_INSN_WRITE_Z) |
bf12938e RS |
3167 | && (insn_uses_reg |
3168 | (ip, MIPS16_EXTRACT_OPERAND (RZ, history[0]), | |
3169 | MIPS16_REG))) | |
252b5132 RH |
3170 | || ((prev_pinfo & MIPS16_INSN_WRITE_T) |
3171 | && insn_uses_reg (ip, TREG, MIPS_GR_REG)) | |
3172 | || ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
3173 | && insn_uses_reg (ip, RA, MIPS_GR_REG)) | |
3174 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
3175 | && insn_uses_reg (ip, | |
47e39b9d RS |
3176 | MIPS16OP_EXTRACT_REG32R |
3177 | (history[0].insn_opcode), | |
252b5132 RH |
3178 | MIPS_GR_REG)))) |
3179 | /* If the branch writes a register that the previous | |
3180 | instruction sets, we can not swap (we know that | |
3181 | branches write only to RD or to $31). */ | |
3182 | || (! mips_opts.mips16 | |
3183 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
3184 | && (((pinfo & INSN_WRITE_GPR_D) | |
bf12938e RS |
3185 | && (EXTRACT_OPERAND (RT, history[0]) |
3186 | == EXTRACT_OPERAND (RD, *ip))) | |
252b5132 | 3187 | || ((pinfo & INSN_WRITE_GPR_31) |
bf12938e | 3188 | && EXTRACT_OPERAND (RT, history[0]) == RA))) |
252b5132 RH |
3189 | || (! mips_opts.mips16 |
3190 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
3191 | && (((pinfo & INSN_WRITE_GPR_D) | |
bf12938e RS |
3192 | && (EXTRACT_OPERAND (RD, history[0]) |
3193 | == EXTRACT_OPERAND (RD, *ip))) | |
252b5132 | 3194 | || ((pinfo & INSN_WRITE_GPR_31) |
bf12938e | 3195 | && EXTRACT_OPERAND (RD, history[0]) == RA))) |
252b5132 RH |
3196 | || (mips_opts.mips16 |
3197 | && (pinfo & MIPS16_INSN_WRITE_31) | |
3198 | && ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
3199 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
47e39b9d | 3200 | && (MIPS16OP_EXTRACT_REG32R (history[0].insn_opcode) |
252b5132 RH |
3201 | == RA)))) |
3202 | /* If the branch writes a register that the previous | |
3203 | instruction reads, we can not swap (we know that | |
3204 | branches only write to RD or to $31). */ | |
3205 | || (! mips_opts.mips16 | |
3206 | && (pinfo & INSN_WRITE_GPR_D) | |
47e39b9d | 3207 | && insn_uses_reg (&history[0], |
bf12938e | 3208 | EXTRACT_OPERAND (RD, *ip), |
252b5132 RH |
3209 | MIPS_GR_REG)) |
3210 | || (! mips_opts.mips16 | |
3211 | && (pinfo & INSN_WRITE_GPR_31) | |
47e39b9d | 3212 | && insn_uses_reg (&history[0], RA, MIPS_GR_REG)) |
252b5132 RH |
3213 | || (mips_opts.mips16 |
3214 | && (pinfo & MIPS16_INSN_WRITE_31) | |
47e39b9d | 3215 | && insn_uses_reg (&history[0], RA, MIPS_GR_REG)) |
252b5132 RH |
3216 | /* If one instruction sets a condition code and the |
3217 | other one uses a condition code, we can not swap. */ | |
3218 | || ((pinfo & INSN_READ_COND_CODE) | |
3219 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
3220 | || ((pinfo & INSN_WRITE_COND_CODE) | |
3221 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
3222 | /* If the previous instruction uses the PC, we can not | |
3223 | swap. */ | |
3224 | || (mips_opts.mips16 | |
3225 | && (prev_pinfo & MIPS16_INSN_READ_PC)) | |
252b5132 RH |
3226 | /* If the previous instruction had a fixup in mips16 |
3227 | mode, we can not swap. This normally means that the | |
3228 | previous instruction was a 4 byte branch anyhow. */ | |
47e39b9d | 3229 | || (mips_opts.mips16 && history[0].fixp[0]) |
bdaaa2e1 KH |
3230 | /* If the previous instruction is a sync, sync.l, or |
3231 | sync.p, we can not swap. */ | |
f173e82e | 3232 | || (prev_pinfo & INSN_SYNC)) |
252b5132 | 3233 | { |
29024861 DU |
3234 | if (mips_opts.mips16 |
3235 | && (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
3236 | && (pinfo & (MIPS16_INSN_READ_X | MIPS16_INSN_READ_31)) | |
3994f87e | 3237 | && ISA_SUPPORTS_MIPS16E) |
29024861 DU |
3238 | { |
3239 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
3240 | ip->insn_opcode |= 0x0080; | |
3241 | install_insn (ip); | |
3242 | insert_into_history (0, 1, ip); | |
3243 | } | |
3244 | else | |
3245 | { | |
3246 | /* We could do even better for unconditional branches to | |
3247 | portions of this object file; we could pick up the | |
3248 | instruction at the destination, put it in the delay | |
3249 | slot, and bump the destination address. */ | |
3250 | insert_into_history (0, 1, ip); | |
3251 | emit_nop (); | |
3252 | } | |
3253 | ||
dd22970f ILT |
3254 | if (mips_relax.sequence) |
3255 | mips_relax.sizes[mips_relax.sequence - 1] += 4; | |
252b5132 RH |
3256 | } |
3257 | else | |
3258 | { | |
3259 | /* It looks like we can actually do the swap. */ | |
1e915849 RS |
3260 | struct mips_cl_insn delay = history[0]; |
3261 | if (mips_opts.mips16) | |
252b5132 | 3262 | { |
b8ee1a6e DU |
3263 | know (delay.frag == ip->frag); |
3264 | move_insn (ip, delay.frag, delay.where); | |
3265 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
1e915849 RS |
3266 | } |
3267 | else if (relaxed_branch) | |
3268 | { | |
3269 | /* Add the delay slot instruction to the end of the | |
3270 | current frag and shrink the fixed part of the | |
3271 | original frag. If the branch occupies the tail of | |
3272 | the latter, move it backwards to cover the gap. */ | |
3273 | delay.frag->fr_fix -= 4; | |
3274 | if (delay.frag == ip->frag) | |
3275 | move_insn (ip, ip->frag, ip->where - 4); | |
3276 | add_fixed_insn (&delay); | |
252b5132 RH |
3277 | } |
3278 | else | |
3279 | { | |
1e915849 RS |
3280 | move_insn (&delay, ip->frag, ip->where); |
3281 | move_insn (ip, history[0].frag, history[0].where); | |
252b5132 | 3282 | } |
1e915849 RS |
3283 | history[0] = *ip; |
3284 | delay.fixed_p = 1; | |
3285 | insert_into_history (0, 1, &delay); | |
252b5132 | 3286 | } |
252b5132 RH |
3287 | |
3288 | /* If that was an unconditional branch, forget the previous | |
3289 | insn information. */ | |
3290 | if (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
7d10b47d | 3291 | mips_no_prev_insn (); |
252b5132 RH |
3292 | } |
3293 | else if (pinfo & INSN_COND_BRANCH_LIKELY) | |
3294 | { | |
3295 | /* We don't yet optimize a branch likely. What we should do | |
3296 | is look at the target, copy the instruction found there | |
3297 | into the delay slot, and increment the branch to jump to | |
3298 | the next instruction. */ | |
1e915849 | 3299 | insert_into_history (0, 1, ip); |
252b5132 | 3300 | emit_nop (); |
252b5132 RH |
3301 | } |
3302 | else | |
1e915849 | 3303 | insert_into_history (0, 1, ip); |
252b5132 | 3304 | } |
1e915849 RS |
3305 | else |
3306 | insert_into_history (0, 1, ip); | |
252b5132 RH |
3307 | |
3308 | /* We just output an insn, so the next one doesn't have a label. */ | |
3309 | mips_clear_insn_labels (); | |
252b5132 RH |
3310 | } |
3311 | ||
7d10b47d | 3312 | /* Forget that there was any previous instruction or label. */ |
252b5132 RH |
3313 | |
3314 | static void | |
7d10b47d | 3315 | mips_no_prev_insn (void) |
252b5132 | 3316 | { |
7d10b47d RS |
3317 | prev_nop_frag = NULL; |
3318 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
3319 | mips_clear_insn_labels (); |
3320 | } | |
3321 | ||
7d10b47d RS |
3322 | /* This function must be called before we emit something other than |
3323 | instructions. It is like mips_no_prev_insn except that it inserts | |
3324 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 3325 | |
7d10b47d RS |
3326 | void |
3327 | mips_emit_delays (void) | |
252b5132 RH |
3328 | { |
3329 | if (! mips_opts.noreorder) | |
3330 | { | |
71400594 | 3331 | int nops = nops_for_insn (history, NULL); |
252b5132 RH |
3332 | if (nops > 0) |
3333 | { | |
7d10b47d RS |
3334 | while (nops-- > 0) |
3335 | add_fixed_insn (NOP_INSN); | |
3336 | mips_move_labels (); | |
3337 | } | |
3338 | } | |
3339 | mips_no_prev_insn (); | |
3340 | } | |
3341 | ||
3342 | /* Start a (possibly nested) noreorder block. */ | |
3343 | ||
3344 | static void | |
3345 | start_noreorder (void) | |
3346 | { | |
3347 | if (mips_opts.noreorder == 0) | |
3348 | { | |
3349 | unsigned int i; | |
3350 | int nops; | |
3351 | ||
3352 | /* None of the instructions before the .set noreorder can be moved. */ | |
3353 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
3354 | history[i].fixed_p = 1; | |
3355 | ||
3356 | /* Insert any nops that might be needed between the .set noreorder | |
3357 | block and the previous instructions. We will later remove any | |
3358 | nops that turn out not to be needed. */ | |
3359 | nops = nops_for_insn (history, NULL); | |
3360 | if (nops > 0) | |
3361 | { | |
3362 | if (mips_optimize != 0) | |
252b5132 RH |
3363 | { |
3364 | /* Record the frag which holds the nop instructions, so | |
3365 | that we can remove them if we don't need them. */ | |
3366 | frag_grow (mips_opts.mips16 ? nops * 2 : nops * 4); | |
3367 | prev_nop_frag = frag_now; | |
3368 | prev_nop_frag_holds = nops; | |
3369 | prev_nop_frag_required = 0; | |
3370 | prev_nop_frag_since = 0; | |
3371 | } | |
3372 | ||
3373 | for (; nops > 0; --nops) | |
1e915849 | 3374 | add_fixed_insn (NOP_INSN); |
252b5132 | 3375 | |
7d10b47d RS |
3376 | /* Move on to a new frag, so that it is safe to simply |
3377 | decrease the size of prev_nop_frag. */ | |
3378 | frag_wane (frag_now); | |
3379 | frag_new (0); | |
404a8071 | 3380 | mips_move_labels (); |
252b5132 | 3381 | } |
7d10b47d RS |
3382 | mips16_mark_labels (); |
3383 | mips_clear_insn_labels (); | |
252b5132 | 3384 | } |
7d10b47d RS |
3385 | mips_opts.noreorder++; |
3386 | mips_any_noreorder = 1; | |
3387 | } | |
252b5132 | 3388 | |
7d10b47d | 3389 | /* End a nested noreorder block. */ |
252b5132 | 3390 | |
7d10b47d RS |
3391 | static void |
3392 | end_noreorder (void) | |
3393 | { | |
3394 | mips_opts.noreorder--; | |
3395 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
3396 | { | |
3397 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
3398 | handling nop insertion the .set reorder way. */ | |
3399 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
3400 | * (mips_opts.mips16 ? 2 : 4)); | |
3401 | insert_into_history (prev_nop_frag_since, | |
3402 | prev_nop_frag_required, NOP_INSN); | |
3403 | prev_nop_frag = NULL; | |
3404 | } | |
252b5132 RH |
3405 | } |
3406 | ||
584892a6 RS |
3407 | /* Set up global variables for the start of a new macro. */ |
3408 | ||
3409 | static void | |
3410 | macro_start (void) | |
3411 | { | |
3412 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
3413 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder | |
47e39b9d | 3414 | && (history[0].insn_mo->pinfo |
584892a6 RS |
3415 | & (INSN_UNCOND_BRANCH_DELAY |
3416 | | INSN_COND_BRANCH_DELAY | |
3417 | | INSN_COND_BRANCH_LIKELY)) != 0); | |
3418 | } | |
3419 | ||
3420 | /* Given that a macro is longer than 4 bytes, return the appropriate warning | |
3421 | for it. Return null if no warning is needed. SUBTYPE is a bitmask of | |
3422 | RELAX_DELAY_SLOT and RELAX_NOMACRO. */ | |
3423 | ||
3424 | static const char * | |
3425 | macro_warning (relax_substateT subtype) | |
3426 | { | |
3427 | if (subtype & RELAX_DELAY_SLOT) | |
3428 | return _("Macro instruction expanded into multiple instructions" | |
3429 | " in a branch delay slot"); | |
3430 | else if (subtype & RELAX_NOMACRO) | |
3431 | return _("Macro instruction expanded into multiple instructions"); | |
3432 | else | |
3433 | return 0; | |
3434 | } | |
3435 | ||
3436 | /* Finish up a macro. Emit warnings as appropriate. */ | |
3437 | ||
3438 | static void | |
3439 | macro_end (void) | |
3440 | { | |
3441 | if (mips_macro_warning.sizes[0] > 4 || mips_macro_warning.sizes[1] > 4) | |
3442 | { | |
3443 | relax_substateT subtype; | |
3444 | ||
3445 | /* Set up the relaxation warning flags. */ | |
3446 | subtype = 0; | |
3447 | if (mips_macro_warning.sizes[1] > mips_macro_warning.sizes[0]) | |
3448 | subtype |= RELAX_SECOND_LONGER; | |
3449 | if (mips_opts.warn_about_macros) | |
3450 | subtype |= RELAX_NOMACRO; | |
3451 | if (mips_macro_warning.delay_slot_p) | |
3452 | subtype |= RELAX_DELAY_SLOT; | |
3453 | ||
3454 | if (mips_macro_warning.sizes[0] > 4 && mips_macro_warning.sizes[1] > 4) | |
3455 | { | |
3456 | /* Either the macro has a single implementation or both | |
3457 | implementations are longer than 4 bytes. Emit the | |
3458 | warning now. */ | |
3459 | const char *msg = macro_warning (subtype); | |
3460 | if (msg != 0) | |
3461 | as_warn (msg); | |
3462 | } | |
3463 | else | |
3464 | { | |
3465 | /* One implementation might need a warning but the other | |
3466 | definitely doesn't. */ | |
3467 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
3468 | } | |
3469 | } | |
3470 | } | |
3471 | ||
6e1304d8 RS |
3472 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
3473 | The first argument in *ARGS will be either the code for a single | |
3474 | relocation or -1 followed by the three codes that make up a | |
3475 | composite relocation. */ | |
3476 | ||
3477 | static void | |
3478 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
3479 | { | |
3480 | int i, next; | |
3481 | ||
3482 | next = va_arg (*args, int); | |
3483 | if (next >= 0) | |
3484 | r[0] = (bfd_reloc_code_real_type) next; | |
3485 | else | |
3486 | for (i = 0; i < 3; i++) | |
3487 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
3488 | } | |
3489 | ||
252b5132 RH |
3490 | /* Build an instruction created by a macro expansion. This is passed |
3491 | a pointer to the count of instructions created so far, an | |
3492 | expression, the name of the instruction to build, an operand format | |
3493 | string, and corresponding arguments. */ | |
3494 | ||
252b5132 | 3495 | static void |
67c0d1eb | 3496 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 3497 | { |
1e915849 | 3498 | const struct mips_opcode *mo; |
252b5132 | 3499 | struct mips_cl_insn insn; |
f6688943 | 3500 | bfd_reloc_code_real_type r[3]; |
252b5132 | 3501 | va_list args; |
252b5132 | 3502 | |
252b5132 | 3503 | va_start (args, fmt); |
252b5132 | 3504 | |
252b5132 RH |
3505 | if (mips_opts.mips16) |
3506 | { | |
67c0d1eb | 3507 | mips16_macro_build (ep, name, fmt, args); |
252b5132 RH |
3508 | va_end (args); |
3509 | return; | |
3510 | } | |
3511 | ||
f6688943 TS |
3512 | r[0] = BFD_RELOC_UNUSED; |
3513 | r[1] = BFD_RELOC_UNUSED; | |
3514 | r[2] = BFD_RELOC_UNUSED; | |
1e915849 RS |
3515 | mo = (struct mips_opcode *) hash_find (op_hash, name); |
3516 | assert (mo); | |
3517 | assert (strcmp (name, mo->name) == 0); | |
3518 | ||
8b082fb1 TS |
3519 | while (1) |
3520 | { | |
3521 | /* Search until we get a match for NAME. It is assumed here that | |
3522 | macros will never generate MDMX, MIPS-3D, or MT instructions. */ | |
3523 | if (strcmp (fmt, mo->args) == 0 | |
3524 | && mo->pinfo != INSN_MACRO | |
037b32b9 | 3525 | && is_opcode_valid (mo, TRUE)) |
8b082fb1 TS |
3526 | break; |
3527 | ||
1e915849 RS |
3528 | ++mo; |
3529 | assert (mo->name); | |
3530 | assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
3531 | } |
3532 | ||
1e915849 | 3533 | create_insn (&insn, mo); |
252b5132 RH |
3534 | for (;;) |
3535 | { | |
3536 | switch (*fmt++) | |
3537 | { | |
3538 | case '\0': | |
3539 | break; | |
3540 | ||
3541 | case ',': | |
3542 | case '(': | |
3543 | case ')': | |
3544 | continue; | |
3545 | ||
5f74bc13 CD |
3546 | case '+': |
3547 | switch (*fmt++) | |
3548 | { | |
3549 | case 'A': | |
3550 | case 'E': | |
bf12938e | 3551 | INSERT_OPERAND (SHAMT, insn, va_arg (args, int)); |
5f74bc13 CD |
3552 | continue; |
3553 | ||
3554 | case 'B': | |
3555 | case 'F': | |
3556 | /* Note that in the macro case, these arguments are already | |
3557 | in MSB form. (When handling the instruction in the | |
3558 | non-macro case, these arguments are sizes from which | |
3559 | MSB values must be calculated.) */ | |
bf12938e | 3560 | INSERT_OPERAND (INSMSB, insn, va_arg (args, int)); |
5f74bc13 CD |
3561 | continue; |
3562 | ||
3563 | case 'C': | |
3564 | case 'G': | |
3565 | case 'H': | |
3566 | /* Note that in the macro case, these arguments are already | |
3567 | in MSBD form. (When handling the instruction in the | |
3568 | non-macro case, these arguments are sizes from which | |
3569 | MSBD values must be calculated.) */ | |
bf12938e | 3570 | INSERT_OPERAND (EXTMSBD, insn, va_arg (args, int)); |
5f74bc13 CD |
3571 | continue; |
3572 | ||
dd3cbb7e NC |
3573 | case 'Q': |
3574 | INSERT_OPERAND (SEQI, insn, va_arg (args, int)); | |
3575 | continue; | |
3576 | ||
5f74bc13 CD |
3577 | default: |
3578 | internalError (); | |
3579 | } | |
3580 | continue; | |
3581 | ||
8b082fb1 TS |
3582 | case '2': |
3583 | INSERT_OPERAND (BP, insn, va_arg (args, int)); | |
3584 | continue; | |
3585 | ||
252b5132 RH |
3586 | case 't': |
3587 | case 'w': | |
3588 | case 'E': | |
bf12938e | 3589 | INSERT_OPERAND (RT, insn, va_arg (args, int)); |
252b5132 RH |
3590 | continue; |
3591 | ||
3592 | case 'c': | |
bf12938e | 3593 | INSERT_OPERAND (CODE, insn, va_arg (args, int)); |
38487616 TS |
3594 | continue; |
3595 | ||
252b5132 RH |
3596 | case 'T': |
3597 | case 'W': | |
bf12938e | 3598 | INSERT_OPERAND (FT, insn, va_arg (args, int)); |
252b5132 RH |
3599 | continue; |
3600 | ||
3601 | case 'd': | |
3602 | case 'G': | |
af7ee8bf | 3603 | case 'K': |
bf12938e | 3604 | INSERT_OPERAND (RD, insn, va_arg (args, int)); |
252b5132 RH |
3605 | continue; |
3606 | ||
4372b673 NC |
3607 | case 'U': |
3608 | { | |
3609 | int tmp = va_arg (args, int); | |
3610 | ||
bf12938e RS |
3611 | INSERT_OPERAND (RT, insn, tmp); |
3612 | INSERT_OPERAND (RD, insn, tmp); | |
beae10d5 | 3613 | continue; |
4372b673 NC |
3614 | } |
3615 | ||
252b5132 RH |
3616 | case 'V': |
3617 | case 'S': | |
bf12938e | 3618 | INSERT_OPERAND (FS, insn, va_arg (args, int)); |
252b5132 RH |
3619 | continue; |
3620 | ||
3621 | case 'z': | |
3622 | continue; | |
3623 | ||
3624 | case '<': | |
bf12938e | 3625 | INSERT_OPERAND (SHAMT, insn, va_arg (args, int)); |
252b5132 RH |
3626 | continue; |
3627 | ||
3628 | case 'D': | |
bf12938e | 3629 | INSERT_OPERAND (FD, insn, va_arg (args, int)); |
252b5132 RH |
3630 | continue; |
3631 | ||
3632 | case 'B': | |
bf12938e | 3633 | INSERT_OPERAND (CODE20, insn, va_arg (args, int)); |
252b5132 RH |
3634 | continue; |
3635 | ||
4372b673 | 3636 | case 'J': |
bf12938e | 3637 | INSERT_OPERAND (CODE19, insn, va_arg (args, int)); |
4372b673 NC |
3638 | continue; |
3639 | ||
252b5132 | 3640 | case 'q': |
bf12938e | 3641 | INSERT_OPERAND (CODE2, insn, va_arg (args, int)); |
252b5132 RH |
3642 | continue; |
3643 | ||
3644 | case 'b': | |
3645 | case 's': | |
3646 | case 'r': | |
3647 | case 'v': | |
bf12938e | 3648 | INSERT_OPERAND (RS, insn, va_arg (args, int)); |
252b5132 RH |
3649 | continue; |
3650 | ||
3651 | case 'i': | |
3652 | case 'j': | |
3653 | case 'o': | |
6e1304d8 | 3654 | macro_read_relocs (&args, r); |
cdf6fd85 | 3655 | assert (*r == BFD_RELOC_GPREL16 |
f6688943 TS |
3656 | || *r == BFD_RELOC_MIPS_LITERAL |
3657 | || *r == BFD_RELOC_MIPS_HIGHER | |
3658 | || *r == BFD_RELOC_HI16_S | |
3659 | || *r == BFD_RELOC_LO16 | |
3660 | || *r == BFD_RELOC_MIPS_GOT16 | |
3661 | || *r == BFD_RELOC_MIPS_CALL16 | |
438c16b8 TS |
3662 | || *r == BFD_RELOC_MIPS_GOT_DISP |
3663 | || *r == BFD_RELOC_MIPS_GOT_PAGE | |
3664 | || *r == BFD_RELOC_MIPS_GOT_OFST | |
f6688943 | 3665 | || *r == BFD_RELOC_MIPS_GOT_LO16 |
3e722fb5 | 3666 | || *r == BFD_RELOC_MIPS_CALL_LO16); |
252b5132 RH |
3667 | continue; |
3668 | ||
3669 | case 'u': | |
6e1304d8 | 3670 | macro_read_relocs (&args, r); |
252b5132 RH |
3671 | assert (ep != NULL |
3672 | && (ep->X_op == O_constant | |
3673 | || (ep->X_op == O_symbol | |
f6688943 TS |
3674 | && (*r == BFD_RELOC_MIPS_HIGHEST |
3675 | || *r == BFD_RELOC_HI16_S | |
3676 | || *r == BFD_RELOC_HI16 | |
3677 | || *r == BFD_RELOC_GPREL16 | |
3678 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
3e722fb5 | 3679 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); |
252b5132 RH |
3680 | continue; |
3681 | ||
3682 | case 'p': | |
3683 | assert (ep != NULL); | |
bad36eac | 3684 | |
252b5132 RH |
3685 | /* |
3686 | * This allows macro() to pass an immediate expression for | |
3687 | * creating short branches without creating a symbol. | |
bad36eac DJ |
3688 | * |
3689 | * We don't allow branch relaxation for these branches, as | |
3690 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
3691 | */ |
3692 | if (ep->X_op == O_constant) | |
3693 | { | |
bad36eac DJ |
3694 | if ((ep->X_add_number & 3) != 0) |
3695 | as_bad (_("branch to misaligned address (0x%lx)"), | |
3696 | (unsigned long) ep->X_add_number); | |
3697 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
3698 | as_bad (_("branch address range overflow (0x%lx)"), | |
3699 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
3700 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
3701 | ep = NULL; | |
3702 | } | |
3703 | else | |
0b25d3e6 | 3704 | *r = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
3705 | continue; |
3706 | ||
3707 | case 'a': | |
3708 | assert (ep != NULL); | |
f6688943 | 3709 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
3710 | continue; |
3711 | ||
3712 | case 'C': | |
a9e24354 | 3713 | INSERT_OPERAND (COPZ, insn, va_arg (args, unsigned long)); |
252b5132 RH |
3714 | continue; |
3715 | ||
d43b4baf | 3716 | case 'k': |
a9e24354 | 3717 | INSERT_OPERAND (CACHE, insn, va_arg (args, unsigned long)); |
d43b4baf TS |
3718 | continue; |
3719 | ||
252b5132 RH |
3720 | default: |
3721 | internalError (); | |
3722 | } | |
3723 | break; | |
3724 | } | |
3725 | va_end (args); | |
f6688943 | 3726 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3727 | |
4d7206a2 | 3728 | append_insn (&insn, ep, r); |
252b5132 RH |
3729 | } |
3730 | ||
3731 | static void | |
67c0d1eb | 3732 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
17a2f251 | 3733 | va_list args) |
252b5132 | 3734 | { |
1e915849 | 3735 | struct mips_opcode *mo; |
252b5132 | 3736 | struct mips_cl_insn insn; |
f6688943 TS |
3737 | bfd_reloc_code_real_type r[3] |
3738 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 3739 | |
1e915849 RS |
3740 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
3741 | assert (mo); | |
3742 | assert (strcmp (name, mo->name) == 0); | |
252b5132 | 3743 | |
1e915849 | 3744 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 3745 | { |
1e915849 RS |
3746 | ++mo; |
3747 | assert (mo->name); | |
3748 | assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
3749 | } |
3750 | ||
1e915849 | 3751 | create_insn (&insn, mo); |
252b5132 RH |
3752 | for (;;) |
3753 | { | |
3754 | int c; | |
3755 | ||
3756 | c = *fmt++; | |
3757 | switch (c) | |
3758 | { | |
3759 | case '\0': | |
3760 | break; | |
3761 | ||
3762 | case ',': | |
3763 | case '(': | |
3764 | case ')': | |
3765 | continue; | |
3766 | ||
3767 | case 'y': | |
3768 | case 'w': | |
bf12938e | 3769 | MIPS16_INSERT_OPERAND (RY, insn, va_arg (args, int)); |
252b5132 RH |
3770 | continue; |
3771 | ||
3772 | case 'x': | |
3773 | case 'v': | |
bf12938e | 3774 | MIPS16_INSERT_OPERAND (RX, insn, va_arg (args, int)); |
252b5132 RH |
3775 | continue; |
3776 | ||
3777 | case 'z': | |
bf12938e | 3778 | MIPS16_INSERT_OPERAND (RZ, insn, va_arg (args, int)); |
252b5132 RH |
3779 | continue; |
3780 | ||
3781 | case 'Z': | |
bf12938e | 3782 | MIPS16_INSERT_OPERAND (MOVE32Z, insn, va_arg (args, int)); |
252b5132 RH |
3783 | continue; |
3784 | ||
3785 | case '0': | |
3786 | case 'S': | |
3787 | case 'P': | |
3788 | case 'R': | |
3789 | continue; | |
3790 | ||
3791 | case 'X': | |
bf12938e | 3792 | MIPS16_INSERT_OPERAND (REGR32, insn, va_arg (args, int)); |
252b5132 RH |
3793 | continue; |
3794 | ||
3795 | case 'Y': | |
3796 | { | |
3797 | int regno; | |
3798 | ||
3799 | regno = va_arg (args, int); | |
3800 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
a9e24354 | 3801 | MIPS16_INSERT_OPERAND (REG32R, insn, regno); |
252b5132 RH |
3802 | } |
3803 | continue; | |
3804 | ||
3805 | case '<': | |
3806 | case '>': | |
3807 | case '4': | |
3808 | case '5': | |
3809 | case 'H': | |
3810 | case 'W': | |
3811 | case 'D': | |
3812 | case 'j': | |
3813 | case '8': | |
3814 | case 'V': | |
3815 | case 'C': | |
3816 | case 'U': | |
3817 | case 'k': | |
3818 | case 'K': | |
3819 | case 'p': | |
3820 | case 'q': | |
3821 | { | |
3822 | assert (ep != NULL); | |
3823 | ||
3824 | if (ep->X_op != O_constant) | |
874e8986 | 3825 | *r = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
3826 | else |
3827 | { | |
b34976b6 AM |
3828 | mips16_immed (NULL, 0, c, ep->X_add_number, FALSE, FALSE, |
3829 | FALSE, &insn.insn_opcode, &insn.use_extend, | |
c4e7957c | 3830 | &insn.extend); |
252b5132 | 3831 | ep = NULL; |
f6688943 | 3832 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
3833 | } |
3834 | } | |
3835 | continue; | |
3836 | ||
3837 | case '6': | |
bf12938e | 3838 | MIPS16_INSERT_OPERAND (IMM6, insn, va_arg (args, int)); |
252b5132 RH |
3839 | continue; |
3840 | } | |
3841 | ||
3842 | break; | |
3843 | } | |
3844 | ||
f6688943 | 3845 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3846 | |
4d7206a2 | 3847 | append_insn (&insn, ep, r); |
252b5132 RH |
3848 | } |
3849 | ||
2051e8c4 MR |
3850 | /* |
3851 | * Sign-extend 32-bit mode constants that have bit 31 set and all | |
3852 | * higher bits unset. | |
3853 | */ | |
9f872bbe | 3854 | static void |
2051e8c4 MR |
3855 | normalize_constant_expr (expressionS *ex) |
3856 | { | |
9ee2a2d4 | 3857 | if (ex->X_op == O_constant |
2051e8c4 MR |
3858 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) |
3859 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
3860 | - 0x80000000); | |
3861 | } | |
3862 | ||
3863 | /* | |
3864 | * Sign-extend 32-bit mode address offsets that have bit 31 set and | |
3865 | * all higher bits unset. | |
3866 | */ | |
3867 | static void | |
3868 | normalize_address_expr (expressionS *ex) | |
3869 | { | |
3870 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
3871 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
3872 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
3873 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
3874 | - 0x80000000); | |
3875 | } | |
3876 | ||
438c16b8 TS |
3877 | /* |
3878 | * Generate a "jalr" instruction with a relocation hint to the called | |
3879 | * function. This occurs in NewABI PIC code. | |
3880 | */ | |
3881 | static void | |
67c0d1eb | 3882 | macro_build_jalr (expressionS *ep) |
438c16b8 | 3883 | { |
685736be | 3884 | char *f = NULL; |
b34976b6 | 3885 | |
438c16b8 | 3886 | if (HAVE_NEWABI) |
f21f8242 | 3887 | { |
cc3d92a5 | 3888 | frag_grow (8); |
f21f8242 AO |
3889 | f = frag_more (0); |
3890 | } | |
67c0d1eb | 3891 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); |
438c16b8 | 3892 | if (HAVE_NEWABI) |
f21f8242 | 3893 | fix_new_exp (frag_now, f - frag_now->fr_literal, |
a105a300 | 3894 | 4, ep, FALSE, BFD_RELOC_MIPS_JALR); |
438c16b8 TS |
3895 | } |
3896 | ||
252b5132 RH |
3897 | /* |
3898 | * Generate a "lui" instruction. | |
3899 | */ | |
3900 | static void | |
67c0d1eb | 3901 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 RH |
3902 | { |
3903 | expressionS high_expr; | |
1e915849 | 3904 | const struct mips_opcode *mo; |
252b5132 | 3905 | struct mips_cl_insn insn; |
f6688943 TS |
3906 | bfd_reloc_code_real_type r[3] |
3907 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
5a38dc70 AM |
3908 | const char *name = "lui"; |
3909 | const char *fmt = "t,u"; | |
252b5132 RH |
3910 | |
3911 | assert (! mips_opts.mips16); | |
3912 | ||
4d7206a2 | 3913 | high_expr = *ep; |
252b5132 RH |
3914 | |
3915 | if (high_expr.X_op == O_constant) | |
3916 | { | |
54f4ddb3 | 3917 | /* We can compute the instruction now without a relocation entry. */ |
e7d556df TS |
3918 | high_expr.X_add_number = ((high_expr.X_add_number + 0x8000) |
3919 | >> 16) & 0xffff; | |
f6688943 | 3920 | *r = BFD_RELOC_UNUSED; |
252b5132 | 3921 | } |
78e1bb40 | 3922 | else |
252b5132 RH |
3923 | { |
3924 | assert (ep->X_op == O_symbol); | |
bbe506e8 TS |
3925 | /* _gp_disp is a special case, used from s_cpload. |
3926 | __gnu_local_gp is used if mips_no_shared. */ | |
252b5132 | 3927 | assert (mips_pic == NO_PIC |
78e1bb40 | 3928 | || (! HAVE_NEWABI |
aa6975fb ILT |
3929 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
3930 | || (! mips_in_shared | |
bbe506e8 TS |
3931 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
3932 | "__gnu_local_gp") == 0)); | |
f6688943 | 3933 | *r = BFD_RELOC_HI16_S; |
252b5132 RH |
3934 | } |
3935 | ||
1e915849 RS |
3936 | mo = hash_find (op_hash, name); |
3937 | assert (strcmp (name, mo->name) == 0); | |
3938 | assert (strcmp (fmt, mo->args) == 0); | |
3939 | create_insn (&insn, mo); | |
252b5132 | 3940 | |
bf12938e RS |
3941 | insn.insn_opcode = insn.insn_mo->match; |
3942 | INSERT_OPERAND (RT, insn, regnum); | |
f6688943 | 3943 | if (*r == BFD_RELOC_UNUSED) |
252b5132 RH |
3944 | { |
3945 | insn.insn_opcode |= high_expr.X_add_number; | |
4d7206a2 | 3946 | append_insn (&insn, NULL, r); |
252b5132 RH |
3947 | } |
3948 | else | |
4d7206a2 | 3949 | append_insn (&insn, &high_expr, r); |
252b5132 RH |
3950 | } |
3951 | ||
885add95 CD |
3952 | /* Generate a sequence of instructions to do a load or store from a constant |
3953 | offset off of a base register (breg) into/from a target register (treg), | |
3954 | using AT if necessary. */ | |
3955 | static void | |
67c0d1eb RS |
3956 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
3957 | int treg, int breg, int dbl) | |
885add95 CD |
3958 | { |
3959 | assert (ep->X_op == O_constant); | |
3960 | ||
256ab948 | 3961 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
3962 | if (!dbl) |
3963 | normalize_constant_expr (ep); | |
256ab948 | 3964 | |
67c1ffbe | 3965 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 3966 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
3967 | as_warn (_("operand overflow")); |
3968 | ||
3969 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
3970 | { | |
3971 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 3972 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
3973 | } |
3974 | else | |
3975 | { | |
3976 | /* 32-bit offset, need multiple instructions and AT, like: | |
3977 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
3978 | addu $tempreg,$tempreg,$breg | |
3979 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
3980 | to handle the complete offset. */ | |
67c0d1eb RS |
3981 | macro_build_lui (ep, AT); |
3982 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
3983 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 | 3984 | |
741fe287 | 3985 | if (!mips_opts.at) |
8fc2e39e | 3986 | as_bad (_("Macro used $at after \".set noat\"")); |
885add95 CD |
3987 | } |
3988 | } | |
3989 | ||
252b5132 RH |
3990 | /* set_at() |
3991 | * Generates code to set the $at register to true (one) | |
3992 | * if reg is less than the immediate expression. | |
3993 | */ | |
3994 | static void | |
67c0d1eb | 3995 | set_at (int reg, int unsignedp) |
252b5132 RH |
3996 | { |
3997 | if (imm_expr.X_op == O_constant | |
3998 | && imm_expr.X_add_number >= -0x8000 | |
3999 | && imm_expr.X_add_number < 0x8000) | |
67c0d1eb RS |
4000 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
4001 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
4002 | else |
4003 | { | |
67c0d1eb RS |
4004 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4005 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); | |
252b5132 RH |
4006 | } |
4007 | } | |
4008 | ||
4009 | /* Warn if an expression is not a constant. */ | |
4010 | ||
4011 | static void | |
17a2f251 | 4012 | check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex) |
252b5132 RH |
4013 | { |
4014 | if (ex->X_op == O_big) | |
4015 | as_bad (_("unsupported large constant")); | |
4016 | else if (ex->X_op != O_constant) | |
9ee2a2d4 MR |
4017 | as_bad (_("Instruction %s requires absolute expression"), |
4018 | ip->insn_mo->name); | |
13757d0c | 4019 | |
9ee2a2d4 MR |
4020 | if (HAVE_32BIT_GPRS) |
4021 | normalize_constant_expr (ex); | |
252b5132 RH |
4022 | } |
4023 | ||
4024 | /* Count the leading zeroes by performing a binary chop. This is a | |
4025 | bulky bit of source, but performance is a LOT better for the | |
4026 | majority of values than a simple loop to count the bits: | |
4027 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
4028 | if ((v) & (1 << (31 - lcnt))) | |
4029 | break; | |
4030 | However it is not code size friendly, and the gain will drop a bit | |
4031 | on certain cached systems. | |
4032 | */ | |
4033 | #define COUNT_TOP_ZEROES(v) \ | |
4034 | (((v) & ~0xffff) == 0 \ | |
4035 | ? ((v) & ~0xff) == 0 \ | |
4036 | ? ((v) & ~0xf) == 0 \ | |
4037 | ? ((v) & ~0x3) == 0 \ | |
4038 | ? ((v) & ~0x1) == 0 \ | |
4039 | ? !(v) \ | |
4040 | ? 32 \ | |
4041 | : 31 \ | |
4042 | : 30 \ | |
4043 | : ((v) & ~0x7) == 0 \ | |
4044 | ? 29 \ | |
4045 | : 28 \ | |
4046 | : ((v) & ~0x3f) == 0 \ | |
4047 | ? ((v) & ~0x1f) == 0 \ | |
4048 | ? 27 \ | |
4049 | : 26 \ | |
4050 | : ((v) & ~0x7f) == 0 \ | |
4051 | ? 25 \ | |
4052 | : 24 \ | |
4053 | : ((v) & ~0xfff) == 0 \ | |
4054 | ? ((v) & ~0x3ff) == 0 \ | |
4055 | ? ((v) & ~0x1ff) == 0 \ | |
4056 | ? 23 \ | |
4057 | : 22 \ | |
4058 | : ((v) & ~0x7ff) == 0 \ | |
4059 | ? 21 \ | |
4060 | : 20 \ | |
4061 | : ((v) & ~0x3fff) == 0 \ | |
4062 | ? ((v) & ~0x1fff) == 0 \ | |
4063 | ? 19 \ | |
4064 | : 18 \ | |
4065 | : ((v) & ~0x7fff) == 0 \ | |
4066 | ? 17 \ | |
4067 | : 16 \ | |
4068 | : ((v) & ~0xffffff) == 0 \ | |
4069 | ? ((v) & ~0xfffff) == 0 \ | |
4070 | ? ((v) & ~0x3ffff) == 0 \ | |
4071 | ? ((v) & ~0x1ffff) == 0 \ | |
4072 | ? 15 \ | |
4073 | : 14 \ | |
4074 | : ((v) & ~0x7ffff) == 0 \ | |
4075 | ? 13 \ | |
4076 | : 12 \ | |
4077 | : ((v) & ~0x3fffff) == 0 \ | |
4078 | ? ((v) & ~0x1fffff) == 0 \ | |
4079 | ? 11 \ | |
4080 | : 10 \ | |
4081 | : ((v) & ~0x7fffff) == 0 \ | |
4082 | ? 9 \ | |
4083 | : 8 \ | |
4084 | : ((v) & ~0xfffffff) == 0 \ | |
4085 | ? ((v) & ~0x3ffffff) == 0 \ | |
4086 | ? ((v) & ~0x1ffffff) == 0 \ | |
4087 | ? 7 \ | |
4088 | : 6 \ | |
4089 | : ((v) & ~0x7ffffff) == 0 \ | |
4090 | ? 5 \ | |
4091 | : 4 \ | |
4092 | : ((v) & ~0x3fffffff) == 0 \ | |
4093 | ? ((v) & ~0x1fffffff) == 0 \ | |
4094 | ? 3 \ | |
4095 | : 2 \ | |
4096 | : ((v) & ~0x7fffffff) == 0 \ | |
4097 | ? 1 \ | |
4098 | : 0) | |
4099 | ||
4100 | /* load_register() | |
67c1ffbe | 4101 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
4102 | * an absolute expression value into a register. |
4103 | */ | |
4104 | static void | |
67c0d1eb | 4105 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
4106 | { |
4107 | int freg; | |
4108 | expressionS hi32, lo32; | |
4109 | ||
4110 | if (ep->X_op != O_big) | |
4111 | { | |
4112 | assert (ep->X_op == O_constant); | |
256ab948 TS |
4113 | |
4114 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
4115 | if (!dbl) |
4116 | normalize_constant_expr (ep); | |
256ab948 TS |
4117 | |
4118 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
4119 | { |
4120 | /* We can handle 16 bit signed values with an addiu to | |
4121 | $zero. No need to ever use daddiu here, since $zero and | |
4122 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 4123 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
4124 | return; |
4125 | } | |
4126 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
4127 | { | |
4128 | /* We can handle 16 bit unsigned values with an ori to | |
4129 | $zero. */ | |
67c0d1eb | 4130 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
4131 | return; |
4132 | } | |
256ab948 | 4133 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
4134 | { |
4135 | /* 32 bit values require an lui. */ | |
67c0d1eb | 4136 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_HI16); |
252b5132 | 4137 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 4138 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
4139 | return; |
4140 | } | |
4141 | } | |
4142 | ||
4143 | /* The value is larger than 32 bits. */ | |
4144 | ||
2051e8c4 | 4145 | if (!dbl || HAVE_32BIT_GPRS) |
252b5132 | 4146 | { |
55e08f71 NC |
4147 | char value[32]; |
4148 | ||
4149 | sprintf_vma (value, ep->X_add_number); | |
20e1fcfd | 4150 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 4151 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
4152 | return; |
4153 | } | |
4154 | ||
4155 | if (ep->X_op != O_big) | |
4156 | { | |
4157 | hi32 = *ep; | |
4158 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
4159 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
4160 | hi32.X_add_number &= 0xffffffff; | |
4161 | lo32 = *ep; | |
4162 | lo32.X_add_number &= 0xffffffff; | |
4163 | } | |
4164 | else | |
4165 | { | |
4166 | assert (ep->X_add_number > 2); | |
4167 | if (ep->X_add_number == 3) | |
4168 | generic_bignum[3] = 0; | |
4169 | else if (ep->X_add_number > 4) | |
4170 | as_bad (_("Number larger than 64 bits")); | |
4171 | lo32.X_op = O_constant; | |
4172 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
4173 | hi32.X_op = O_constant; | |
4174 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
4175 | } | |
4176 | ||
4177 | if (hi32.X_add_number == 0) | |
4178 | freg = 0; | |
4179 | else | |
4180 | { | |
4181 | int shift, bit; | |
4182 | unsigned long hi, lo; | |
4183 | ||
956cd1d6 | 4184 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
4185 | { |
4186 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
4187 | { | |
67c0d1eb | 4188 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
4189 | return; |
4190 | } | |
4191 | if (lo32.X_add_number & 0x80000000) | |
4192 | { | |
67c0d1eb | 4193 | macro_build (&lo32, "lui", "t,u", reg, BFD_RELOC_HI16); |
252b5132 | 4194 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 4195 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
4196 | return; |
4197 | } | |
4198 | } | |
252b5132 RH |
4199 | |
4200 | /* Check for 16bit shifted constant. We know that hi32 is | |
4201 | non-zero, so start the mask on the first bit of the hi32 | |
4202 | value. */ | |
4203 | shift = 17; | |
4204 | do | |
beae10d5 KH |
4205 | { |
4206 | unsigned long himask, lomask; | |
4207 | ||
4208 | if (shift < 32) | |
4209 | { | |
4210 | himask = 0xffff >> (32 - shift); | |
4211 | lomask = (0xffff << shift) & 0xffffffff; | |
4212 | } | |
4213 | else | |
4214 | { | |
4215 | himask = 0xffff << (shift - 32); | |
4216 | lomask = 0; | |
4217 | } | |
4218 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
4219 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
4220 | { | |
4221 | expressionS tmp; | |
4222 | ||
4223 | tmp.X_op = O_constant; | |
4224 | if (shift < 32) | |
4225 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
4226 | | (lo32.X_add_number >> shift)); | |
4227 | else | |
4228 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb RS |
4229 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
4230 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", "d,w,<", | |
4231 | reg, reg, (shift >= 32) ? shift - 32 : shift); | |
beae10d5 KH |
4232 | return; |
4233 | } | |
f9419b05 | 4234 | ++shift; |
beae10d5 KH |
4235 | } |
4236 | while (shift <= (64 - 16)); | |
252b5132 RH |
4237 | |
4238 | /* Find the bit number of the lowest one bit, and store the | |
4239 | shifted value in hi/lo. */ | |
4240 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
4241 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
4242 | if (lo != 0) | |
4243 | { | |
4244 | bit = 0; | |
4245 | while ((lo & 1) == 0) | |
4246 | { | |
4247 | lo >>= 1; | |
4248 | ++bit; | |
4249 | } | |
4250 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
4251 | hi >>= bit; | |
4252 | } | |
4253 | else | |
4254 | { | |
4255 | bit = 32; | |
4256 | while ((hi & 1) == 0) | |
4257 | { | |
4258 | hi >>= 1; | |
4259 | ++bit; | |
4260 | } | |
4261 | lo = hi; | |
4262 | hi = 0; | |
4263 | } | |
4264 | ||
4265 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
4266 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
4267 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
4268 | { |
4269 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 4270 | if (shift != 0) |
beae10d5 | 4271 | { |
252b5132 RH |
4272 | expressionS tmp; |
4273 | ||
4274 | /* This instruction will set the register to be all | |
4275 | ones. */ | |
beae10d5 KH |
4276 | tmp.X_op = O_constant; |
4277 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 4278 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
4279 | if (bit != 0) |
4280 | { | |
4281 | bit += shift; | |
67c0d1eb RS |
4282 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", "d,w,<", |
4283 | reg, reg, (bit >= 32) ? bit - 32 : bit); | |
beae10d5 | 4284 | } |
67c0d1eb RS |
4285 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", "d,w,<", |
4286 | reg, reg, (shift >= 32) ? shift - 32 : shift); | |
beae10d5 KH |
4287 | return; |
4288 | } | |
4289 | } | |
252b5132 RH |
4290 | |
4291 | /* Sign extend hi32 before calling load_register, because we can | |
4292 | generally get better code when we load a sign extended value. */ | |
4293 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 4294 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 4295 | load_register (reg, &hi32, 0); |
252b5132 RH |
4296 | freg = reg; |
4297 | } | |
4298 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
4299 | { | |
4300 | if (freg != 0) | |
4301 | { | |
67c0d1eb | 4302 | macro_build (NULL, "dsll32", "d,w,<", reg, freg, 0); |
252b5132 RH |
4303 | freg = reg; |
4304 | } | |
4305 | } | |
4306 | else | |
4307 | { | |
4308 | expressionS mid16; | |
4309 | ||
956cd1d6 | 4310 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 4311 | { |
67c0d1eb RS |
4312 | macro_build (&lo32, "lui", "t,u", reg, BFD_RELOC_HI16); |
4313 | macro_build (NULL, "dsrl32", "d,w,<", reg, reg, 0); | |
beae10d5 KH |
4314 | return; |
4315 | } | |
252b5132 RH |
4316 | |
4317 | if (freg != 0) | |
4318 | { | |
67c0d1eb | 4319 | macro_build (NULL, "dsll", "d,w,<", reg, freg, 16); |
252b5132 RH |
4320 | freg = reg; |
4321 | } | |
4322 | mid16 = lo32; | |
4323 | mid16.X_add_number >>= 16; | |
67c0d1eb RS |
4324 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
4325 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
252b5132 RH |
4326 | freg = reg; |
4327 | } | |
4328 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 4329 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
4330 | } |
4331 | ||
269137b2 TS |
4332 | static inline void |
4333 | load_delay_nop (void) | |
4334 | { | |
4335 | if (!gpr_interlocks) | |
4336 | macro_build (NULL, "nop", ""); | |
4337 | } | |
4338 | ||
252b5132 RH |
4339 | /* Load an address into a register. */ |
4340 | ||
4341 | static void | |
67c0d1eb | 4342 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 4343 | { |
252b5132 RH |
4344 | if (ep->X_op != O_constant |
4345 | && ep->X_op != O_symbol) | |
4346 | { | |
4347 | as_bad (_("expression too complex")); | |
4348 | ep->X_op = O_constant; | |
4349 | } | |
4350 | ||
4351 | if (ep->X_op == O_constant) | |
4352 | { | |
67c0d1eb | 4353 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
4354 | return; |
4355 | } | |
4356 | ||
4357 | if (mips_pic == NO_PIC) | |
4358 | { | |
4359 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 4360 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
4361 | Otherwise we want |
4362 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
4363 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 4364 | If we have an addend, we always use the latter form. |
76b3015f | 4365 | |
d6bc6245 TS |
4366 | With 64bit address space and a usable $at we want |
4367 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4368 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
4369 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4370 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
4371 | dsll32 $reg,0 | |
3a482fd5 | 4372 | daddu $reg,$reg,$at |
76b3015f | 4373 | |
c03099e6 | 4374 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
4375 | on superscalar processors. |
4376 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4377 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4378 | dsll $reg,16 | |
4379 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
4380 | dsll $reg,16 | |
4381 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
4382 | |
4383 | For GP relative symbols in 64bit address space we can use | |
4384 | the same sequence as in 32bit address space. */ | |
aed1a261 | 4385 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 4386 | { |
6caf9ef4 TS |
4387 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
4388 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
4389 | { | |
4390 | relax_start (ep->X_add_symbol); | |
4391 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
4392 | mips_gp_register, BFD_RELOC_GPREL16); | |
4393 | relax_switch (); | |
4394 | } | |
d6bc6245 | 4395 | |
741fe287 | 4396 | if (*used_at == 0 && mips_opts.at) |
d6bc6245 | 4397 | { |
67c0d1eb RS |
4398 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_HIGHEST); |
4399 | macro_build (ep, "lui", "t,u", AT, BFD_RELOC_HI16_S); | |
4400 | macro_build (ep, "daddiu", "t,r,j", reg, reg, | |
4401 | BFD_RELOC_MIPS_HIGHER); | |
4402 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
4403 | macro_build (NULL, "dsll32", "d,w,<", reg, reg, 0); | |
4404 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); | |
d6bc6245 TS |
4405 | *used_at = 1; |
4406 | } | |
4407 | else | |
4408 | { | |
67c0d1eb RS |
4409 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_HIGHEST); |
4410 | macro_build (ep, "daddiu", "t,r,j", reg, reg, | |
4411 | BFD_RELOC_MIPS_HIGHER); | |
4412 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
4413 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); | |
4414 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
4415 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); | |
d6bc6245 | 4416 | } |
6caf9ef4 TS |
4417 | |
4418 | if (mips_relax.sequence) | |
4419 | relax_end (); | |
d6bc6245 | 4420 | } |
252b5132 RH |
4421 | else |
4422 | { | |
d6bc6245 | 4423 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 4424 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 4425 | { |
4d7206a2 | 4426 | relax_start (ep->X_add_symbol); |
67c0d1eb | 4427 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 4428 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 4429 | relax_switch (); |
d6bc6245 | 4430 | } |
67c0d1eb RS |
4431 | macro_build_lui (ep, reg); |
4432 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
4433 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
4434 | if (mips_relax.sequence) |
4435 | relax_end (); | |
d6bc6245 | 4436 | } |
252b5132 | 4437 | } |
0a44bf69 | 4438 | else if (!mips_big_got) |
252b5132 RH |
4439 | { |
4440 | expressionS ex; | |
4441 | ||
4442 | /* If this is a reference to an external symbol, we want | |
4443 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4444 | Otherwise we want | |
4445 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4446 | nop | |
4447 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
4448 | If there is a constant, it must be added in after. |
4449 | ||
ed6fb7bd | 4450 | If we have NewABI, we want |
f5040a92 AO |
4451 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
4452 | unless we're referencing a global symbol with a non-zero | |
4453 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
4454 | if (HAVE_NEWABI) |
4455 | { | |
f5040a92 AO |
4456 | if (ep->X_add_number) |
4457 | { | |
4d7206a2 | 4458 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 4459 | ep->X_add_number = 0; |
4d7206a2 | 4460 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4461 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
4462 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
4463 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
4464 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4465 | ex.X_op = O_constant; | |
67c0d1eb | 4466 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 4467 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 4468 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 4469 | relax_switch (); |
f5040a92 | 4470 | } |
67c0d1eb | 4471 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4472 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
4473 | if (mips_relax.sequence) |
4474 | relax_end (); | |
ed6fb7bd SC |
4475 | } |
4476 | else | |
4477 | { | |
f5040a92 AO |
4478 | ex.X_add_number = ep->X_add_number; |
4479 | ep->X_add_number = 0; | |
67c0d1eb RS |
4480 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
4481 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 4482 | load_delay_nop (); |
4d7206a2 RS |
4483 | relax_start (ep->X_add_symbol); |
4484 | relax_switch (); | |
67c0d1eb | 4485 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 4486 | BFD_RELOC_LO16); |
4d7206a2 | 4487 | relax_end (); |
ed6fb7bd | 4488 | |
f5040a92 AO |
4489 | if (ex.X_add_number != 0) |
4490 | { | |
4491 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4492 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4493 | ex.X_op = O_constant; | |
67c0d1eb | 4494 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 4495 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 4496 | } |
252b5132 RH |
4497 | } |
4498 | } | |
0a44bf69 | 4499 | else if (mips_big_got) |
252b5132 RH |
4500 | { |
4501 | expressionS ex; | |
252b5132 RH |
4502 | |
4503 | /* This is the large GOT case. If this is a reference to an | |
4504 | external symbol, we want | |
4505 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
4506 | addu $reg,$reg,$gp | |
4507 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
4508 | |
4509 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
4510 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
4511 | nop | |
4512 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 4513 | If there is a constant, it must be added in after. |
f5040a92 AO |
4514 | |
4515 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
4516 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
4517 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 4518 | */ |
438c16b8 TS |
4519 | if (HAVE_NEWABI) |
4520 | { | |
4d7206a2 | 4521 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 4522 | ep->X_add_number = 0; |
4d7206a2 | 4523 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4524 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_GOT_HI16); |
4525 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
4526 | reg, reg, mips_gp_register); | |
4527 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
4528 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
4529 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
4530 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4531 | else if (ex.X_add_number) | |
4532 | { | |
4533 | ex.X_op = O_constant; | |
67c0d1eb RS |
4534 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4535 | BFD_RELOC_LO16); | |
f5040a92 AO |
4536 | } |
4537 | ||
4538 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 4539 | relax_switch (); |
67c0d1eb | 4540 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4541 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
4542 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4543 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 4544 | relax_end (); |
438c16b8 | 4545 | } |
252b5132 | 4546 | else |
438c16b8 | 4547 | { |
f5040a92 AO |
4548 | ex.X_add_number = ep->X_add_number; |
4549 | ep->X_add_number = 0; | |
4d7206a2 | 4550 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4551 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_GOT_HI16); |
4552 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
4553 | reg, reg, mips_gp_register); | |
4554 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
4555 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
4556 | relax_switch (); |
4557 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
4558 | { |
4559 | /* We need a nop before loading from $gp. This special | |
4560 | check is required because the lui which starts the main | |
4561 | instruction stream does not refer to $gp, and so will not | |
4562 | insert the nop which may be required. */ | |
67c0d1eb | 4563 | macro_build (NULL, "nop", ""); |
438c16b8 | 4564 | } |
67c0d1eb | 4565 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4566 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 4567 | load_delay_nop (); |
67c0d1eb | 4568 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 4569 | BFD_RELOC_LO16); |
4d7206a2 | 4570 | relax_end (); |
438c16b8 | 4571 | |
f5040a92 AO |
4572 | if (ex.X_add_number != 0) |
4573 | { | |
4574 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4575 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4576 | ex.X_op = O_constant; | |
67c0d1eb RS |
4577 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4578 | BFD_RELOC_LO16); | |
f5040a92 | 4579 | } |
252b5132 RH |
4580 | } |
4581 | } | |
252b5132 RH |
4582 | else |
4583 | abort (); | |
8fc2e39e | 4584 | |
741fe287 | 4585 | if (!mips_opts.at && *used_at == 1) |
8fc2e39e | 4586 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
4587 | } |
4588 | ||
ea1fb5dc RS |
4589 | /* Move the contents of register SOURCE into register DEST. */ |
4590 | ||
4591 | static void | |
67c0d1eb | 4592 | move_register (int dest, int source) |
ea1fb5dc | 4593 | { |
67c0d1eb RS |
4594 | macro_build (NULL, HAVE_32BIT_GPRS ? "addu" : "daddu", "d,v,t", |
4595 | dest, source, 0); | |
ea1fb5dc RS |
4596 | } |
4597 | ||
4d7206a2 | 4598 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
4599 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
4600 | The two alternatives are: | |
4d7206a2 RS |
4601 | |
4602 | Global symbol Local sybmol | |
4603 | ------------- ------------ | |
4604 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
4605 | ... ... | |
4606 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
4607 | ||
4608 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
4609 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
4610 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
4611 | |
4612 | static void | |
67c0d1eb | 4613 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
4614 | { |
4615 | expressionS global; | |
4616 | ||
4617 | global = *local; | |
4618 | global.X_add_number = 0; | |
4619 | ||
4620 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
4621 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
4622 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 4623 | relax_switch (); |
67c0d1eb RS |
4624 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
4625 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
4626 | relax_end (); |
4627 | } | |
4628 | ||
4629 | static void | |
67c0d1eb | 4630 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
4631 | { |
4632 | expressionS global; | |
4633 | ||
4634 | global.X_op = O_constant; | |
4635 | global.X_op_symbol = NULL; | |
4636 | global.X_add_symbol = NULL; | |
4637 | global.X_add_number = local->X_add_number; | |
4638 | ||
4639 | relax_start (local->X_add_symbol); | |
67c0d1eb | 4640 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
4641 | dest, dest, BFD_RELOC_LO16); |
4642 | relax_switch (); | |
67c0d1eb | 4643 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
4644 | relax_end (); |
4645 | } | |
4646 | ||
f6a22291 MR |
4647 | static void |
4648 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
4649 | { | |
4650 | expressionS global; | |
4651 | int hold_mips_optimize; | |
4652 | ||
4653 | global.X_op = O_constant; | |
4654 | global.X_op_symbol = NULL; | |
4655 | global.X_add_symbol = NULL; | |
4656 | global.X_add_number = local->X_add_number; | |
4657 | ||
4658 | relax_start (local->X_add_symbol); | |
4659 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
4660 | relax_switch (); | |
4661 | /* Set mips_optimize around the lui instruction to avoid | |
4662 | inserting an unnecessary nop after the lw. */ | |
4663 | hold_mips_optimize = mips_optimize; | |
4664 | mips_optimize = 2; | |
4665 | macro_build_lui (&global, tmp); | |
4666 | mips_optimize = hold_mips_optimize; | |
4667 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
4668 | relax_end (); | |
4669 | ||
4670 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
4671 | } | |
4672 | ||
252b5132 RH |
4673 | /* |
4674 | * Build macros | |
4675 | * This routine implements the seemingly endless macro or synthesized | |
4676 | * instructions and addressing modes in the mips assembly language. Many | |
4677 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 4678 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
4679 | * this verbose method. Others are not simple macros but are more like |
4680 | * optimizing code generation. | |
4681 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 4682 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
4683 | * The ensuing load upper instructions are ommited. This implies some kind |
4684 | * of global optimization. We currently only optimize within a single macro. | |
4685 | * For many of the load and store macros if the address is specified as a | |
4686 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
4687 | * first load register 'at' with zero and use it as the base register. The | |
4688 | * mips assembler simply uses register $zero. Just one tiny optimization | |
4689 | * we're missing. | |
4690 | */ | |
4691 | static void | |
17a2f251 | 4692 | macro (struct mips_cl_insn *ip) |
252b5132 | 4693 | { |
741fe287 MR |
4694 | unsigned int treg, sreg, dreg, breg; |
4695 | unsigned int tempreg; | |
252b5132 | 4696 | int mask; |
43841e91 | 4697 | int used_at = 0; |
252b5132 RH |
4698 | expressionS expr1; |
4699 | const char *s; | |
4700 | const char *s2; | |
4701 | const char *fmt; | |
4702 | int likely = 0; | |
4703 | int dbl = 0; | |
4704 | int coproc = 0; | |
4705 | int lr = 0; | |
4706 | int imm = 0; | |
1abe91b1 | 4707 | int call = 0; |
252b5132 | 4708 | int off; |
67c0d1eb | 4709 | offsetT maxnum; |
252b5132 | 4710 | bfd_reloc_code_real_type r; |
252b5132 RH |
4711 | int hold_mips_optimize; |
4712 | ||
4713 | assert (! mips_opts.mips16); | |
4714 | ||
4715 | treg = (ip->insn_opcode >> 16) & 0x1f; | |
4716 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
4717 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
4718 | mask = ip->insn_mo->mask; | |
4719 | ||
4720 | expr1.X_op = O_constant; | |
4721 | expr1.X_op_symbol = NULL; | |
4722 | expr1.X_add_symbol = NULL; | |
4723 | expr1.X_add_number = 1; | |
4724 | ||
4725 | switch (mask) | |
4726 | { | |
4727 | case M_DABS: | |
4728 | dbl = 1; | |
4729 | case M_ABS: | |
4730 | /* bgez $a0,.+12 | |
4731 | move v0,$a0 | |
4732 | sub v0,$zero,$a0 | |
4733 | */ | |
4734 | ||
7d10b47d | 4735 | start_noreorder (); |
252b5132 RH |
4736 | |
4737 | expr1.X_add_number = 8; | |
67c0d1eb | 4738 | macro_build (&expr1, "bgez", "s,p", sreg); |
252b5132 | 4739 | if (dreg == sreg) |
67c0d1eb | 4740 | macro_build (NULL, "nop", "", 0); |
252b5132 | 4741 | else |
67c0d1eb RS |
4742 | move_register (dreg, sreg); |
4743 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); | |
252b5132 | 4744 | |
7d10b47d | 4745 | end_noreorder (); |
8fc2e39e | 4746 | break; |
252b5132 RH |
4747 | |
4748 | case M_ADD_I: | |
4749 | s = "addi"; | |
4750 | s2 = "add"; | |
4751 | goto do_addi; | |
4752 | case M_ADDU_I: | |
4753 | s = "addiu"; | |
4754 | s2 = "addu"; | |
4755 | goto do_addi; | |
4756 | case M_DADD_I: | |
4757 | dbl = 1; | |
4758 | s = "daddi"; | |
4759 | s2 = "dadd"; | |
4760 | goto do_addi; | |
4761 | case M_DADDU_I: | |
4762 | dbl = 1; | |
4763 | s = "daddiu"; | |
4764 | s2 = "daddu"; | |
4765 | do_addi: | |
4766 | if (imm_expr.X_op == O_constant | |
4767 | && imm_expr.X_add_number >= -0x8000 | |
4768 | && imm_expr.X_add_number < 0x8000) | |
4769 | { | |
67c0d1eb | 4770 | macro_build (&imm_expr, s, "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 4771 | break; |
252b5132 | 4772 | } |
8fc2e39e | 4773 | used_at = 1; |
67c0d1eb RS |
4774 | load_register (AT, &imm_expr, dbl); |
4775 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
4776 | break; |
4777 | ||
4778 | case M_AND_I: | |
4779 | s = "andi"; | |
4780 | s2 = "and"; | |
4781 | goto do_bit; | |
4782 | case M_OR_I: | |
4783 | s = "ori"; | |
4784 | s2 = "or"; | |
4785 | goto do_bit; | |
4786 | case M_NOR_I: | |
4787 | s = ""; | |
4788 | s2 = "nor"; | |
4789 | goto do_bit; | |
4790 | case M_XOR_I: | |
4791 | s = "xori"; | |
4792 | s2 = "xor"; | |
4793 | do_bit: | |
4794 | if (imm_expr.X_op == O_constant | |
4795 | && imm_expr.X_add_number >= 0 | |
4796 | && imm_expr.X_add_number < 0x10000) | |
4797 | { | |
4798 | if (mask != M_NOR_I) | |
67c0d1eb | 4799 | macro_build (&imm_expr, s, "t,r,i", treg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
4800 | else |
4801 | { | |
67c0d1eb RS |
4802 | macro_build (&imm_expr, "ori", "t,r,i", |
4803 | treg, sreg, BFD_RELOC_LO16); | |
4804 | macro_build (NULL, "nor", "d,v,t", treg, treg, 0); | |
252b5132 | 4805 | } |
8fc2e39e | 4806 | break; |
252b5132 RH |
4807 | } |
4808 | ||
8fc2e39e | 4809 | used_at = 1; |
67c0d1eb RS |
4810 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4811 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
4812 | break; |
4813 | ||
8b082fb1 TS |
4814 | case M_BALIGN: |
4815 | switch (imm_expr.X_add_number) | |
4816 | { | |
4817 | case 0: | |
4818 | macro_build (NULL, "nop", ""); | |
4819 | break; | |
4820 | case 2: | |
4821 | macro_build (NULL, "packrl.ph", "d,s,t", treg, treg, sreg); | |
4822 | break; | |
4823 | default: | |
4824 | macro_build (NULL, "balign", "t,s,2", treg, sreg, | |
4825 | (int)imm_expr.X_add_number); | |
4826 | break; | |
4827 | } | |
4828 | break; | |
4829 | ||
252b5132 RH |
4830 | case M_BEQ_I: |
4831 | s = "beq"; | |
4832 | goto beq_i; | |
4833 | case M_BEQL_I: | |
4834 | s = "beql"; | |
4835 | likely = 1; | |
4836 | goto beq_i; | |
4837 | case M_BNE_I: | |
4838 | s = "bne"; | |
4839 | goto beq_i; | |
4840 | case M_BNEL_I: | |
4841 | s = "bnel"; | |
4842 | likely = 1; | |
4843 | beq_i: | |
4844 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4845 | { | |
67c0d1eb | 4846 | macro_build (&offset_expr, s, "s,t,p", sreg, 0); |
8fc2e39e | 4847 | break; |
252b5132 | 4848 | } |
8fc2e39e | 4849 | used_at = 1; |
67c0d1eb RS |
4850 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4851 | macro_build (&offset_expr, s, "s,t,p", sreg, AT); | |
252b5132 RH |
4852 | break; |
4853 | ||
4854 | case M_BGEL: | |
4855 | likely = 1; | |
4856 | case M_BGE: | |
4857 | if (treg == 0) | |
4858 | { | |
67c0d1eb | 4859 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", sreg); |
8fc2e39e | 4860 | break; |
252b5132 RH |
4861 | } |
4862 | if (sreg == 0) | |
4863 | { | |
67c0d1eb | 4864 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", treg); |
8fc2e39e | 4865 | break; |
252b5132 | 4866 | } |
8fc2e39e | 4867 | used_at = 1; |
67c0d1eb RS |
4868 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); |
4869 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4870 | break; |
4871 | ||
4872 | case M_BGTL_I: | |
4873 | likely = 1; | |
4874 | case M_BGT_I: | |
4875 | /* check for > max integer */ | |
4876 | maxnum = 0x7fffffff; | |
ca4e0257 | 4877 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4878 | { |
4879 | maxnum <<= 16; | |
4880 | maxnum |= 0xffff; | |
4881 | maxnum <<= 16; | |
4882 | maxnum |= 0xffff; | |
4883 | } | |
4884 | if (imm_expr.X_op == O_constant | |
4885 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 4886 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4887 | { |
4888 | do_false: | |
4889 | /* result is always false */ | |
4890 | if (! likely) | |
67c0d1eb | 4891 | macro_build (NULL, "nop", "", 0); |
252b5132 | 4892 | else |
67c0d1eb | 4893 | macro_build (&offset_expr, "bnel", "s,t,p", 0, 0); |
8fc2e39e | 4894 | break; |
252b5132 RH |
4895 | } |
4896 | if (imm_expr.X_op != O_constant) | |
4897 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4898 | ++imm_expr.X_add_number; |
252b5132 RH |
4899 | /* FALLTHROUGH */ |
4900 | case M_BGE_I: | |
4901 | case M_BGEL_I: | |
4902 | if (mask == M_BGEL_I) | |
4903 | likely = 1; | |
4904 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4905 | { | |
67c0d1eb | 4906 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", sreg); |
8fc2e39e | 4907 | break; |
252b5132 RH |
4908 | } |
4909 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4910 | { | |
67c0d1eb | 4911 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", sreg); |
8fc2e39e | 4912 | break; |
252b5132 RH |
4913 | } |
4914 | maxnum = 0x7fffffff; | |
ca4e0257 | 4915 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4916 | { |
4917 | maxnum <<= 16; | |
4918 | maxnum |= 0xffff; | |
4919 | maxnum <<= 16; | |
4920 | maxnum |= 0xffff; | |
4921 | } | |
4922 | maxnum = - maxnum - 1; | |
4923 | if (imm_expr.X_op == O_constant | |
4924 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 4925 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4926 | { |
4927 | do_true: | |
4928 | /* result is always true */ | |
4929 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
67c0d1eb | 4930 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 4931 | break; |
252b5132 | 4932 | } |
8fc2e39e | 4933 | used_at = 1; |
67c0d1eb RS |
4934 | set_at (sreg, 0); |
4935 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4936 | break; |
4937 | ||
4938 | case M_BGEUL: | |
4939 | likely = 1; | |
4940 | case M_BGEU: | |
4941 | if (treg == 0) | |
4942 | goto do_true; | |
4943 | if (sreg == 0) | |
4944 | { | |
67c0d1eb | 4945 | macro_build (&offset_expr, likely ? "beql" : "beq", |
17a2f251 | 4946 | "s,t,p", 0, treg); |
8fc2e39e | 4947 | break; |
252b5132 | 4948 | } |
8fc2e39e | 4949 | used_at = 1; |
67c0d1eb RS |
4950 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); |
4951 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4952 | break; |
4953 | ||
4954 | case M_BGTUL_I: | |
4955 | likely = 1; | |
4956 | case M_BGTU_I: | |
4957 | if (sreg == 0 | |
ca4e0257 | 4958 | || (HAVE_32BIT_GPRS |
252b5132 | 4959 | && imm_expr.X_op == O_constant |
956cd1d6 | 4960 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
4961 | goto do_false; |
4962 | if (imm_expr.X_op != O_constant) | |
4963 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4964 | ++imm_expr.X_add_number; |
252b5132 RH |
4965 | /* FALLTHROUGH */ |
4966 | case M_BGEU_I: | |
4967 | case M_BGEUL_I: | |
4968 | if (mask == M_BGEUL_I) | |
4969 | likely = 1; | |
4970 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4971 | goto do_true; | |
4972 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4973 | { | |
67c0d1eb | 4974 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 4975 | "s,t,p", sreg, 0); |
8fc2e39e | 4976 | break; |
252b5132 | 4977 | } |
8fc2e39e | 4978 | used_at = 1; |
67c0d1eb RS |
4979 | set_at (sreg, 1); |
4980 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4981 | break; |
4982 | ||
4983 | case M_BGTL: | |
4984 | likely = 1; | |
4985 | case M_BGT: | |
4986 | if (treg == 0) | |
4987 | { | |
67c0d1eb | 4988 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", sreg); |
8fc2e39e | 4989 | break; |
252b5132 RH |
4990 | } |
4991 | if (sreg == 0) | |
4992 | { | |
67c0d1eb | 4993 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", treg); |
8fc2e39e | 4994 | break; |
252b5132 | 4995 | } |
8fc2e39e | 4996 | used_at = 1; |
67c0d1eb RS |
4997 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); |
4998 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
4999 | break; |
5000 | ||
5001 | case M_BGTUL: | |
5002 | likely = 1; | |
5003 | case M_BGTU: | |
5004 | if (treg == 0) | |
5005 | { | |
67c0d1eb | 5006 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 5007 | "s,t,p", sreg, 0); |
8fc2e39e | 5008 | break; |
252b5132 RH |
5009 | } |
5010 | if (sreg == 0) | |
5011 | goto do_false; | |
8fc2e39e | 5012 | used_at = 1; |
67c0d1eb RS |
5013 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); |
5014 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5015 | break; |
5016 | ||
5017 | case M_BLEL: | |
5018 | likely = 1; | |
5019 | case M_BLE: | |
5020 | if (treg == 0) | |
5021 | { | |
67c0d1eb | 5022 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", sreg); |
8fc2e39e | 5023 | break; |
252b5132 RH |
5024 | } |
5025 | if (sreg == 0) | |
5026 | { | |
67c0d1eb | 5027 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", treg); |
8fc2e39e | 5028 | break; |
252b5132 | 5029 | } |
8fc2e39e | 5030 | used_at = 1; |
67c0d1eb RS |
5031 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); |
5032 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
5033 | break; |
5034 | ||
5035 | case M_BLEL_I: | |
5036 | likely = 1; | |
5037 | case M_BLE_I: | |
5038 | maxnum = 0x7fffffff; | |
ca4e0257 | 5039 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
5040 | { |
5041 | maxnum <<= 16; | |
5042 | maxnum |= 0xffff; | |
5043 | maxnum <<= 16; | |
5044 | maxnum |= 0xffff; | |
5045 | } | |
5046 | if (imm_expr.X_op == O_constant | |
5047 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 5048 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
5049 | goto do_true; |
5050 | if (imm_expr.X_op != O_constant) | |
5051 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 5052 | ++imm_expr.X_add_number; |
252b5132 RH |
5053 | /* FALLTHROUGH */ |
5054 | case M_BLT_I: | |
5055 | case M_BLTL_I: | |
5056 | if (mask == M_BLTL_I) | |
5057 | likely = 1; | |
5058 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5059 | { | |
67c0d1eb | 5060 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", sreg); |
8fc2e39e | 5061 | break; |
252b5132 RH |
5062 | } |
5063 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5064 | { | |
67c0d1eb | 5065 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", sreg); |
8fc2e39e | 5066 | break; |
252b5132 | 5067 | } |
8fc2e39e | 5068 | used_at = 1; |
67c0d1eb RS |
5069 | set_at (sreg, 0); |
5070 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5071 | break; |
5072 | ||
5073 | case M_BLEUL: | |
5074 | likely = 1; | |
5075 | case M_BLEU: | |
5076 | if (treg == 0) | |
5077 | { | |
67c0d1eb | 5078 | macro_build (&offset_expr, likely ? "beql" : "beq", |
17a2f251 | 5079 | "s,t,p", sreg, 0); |
8fc2e39e | 5080 | break; |
252b5132 RH |
5081 | } |
5082 | if (sreg == 0) | |
5083 | goto do_true; | |
8fc2e39e | 5084 | used_at = 1; |
67c0d1eb RS |
5085 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); |
5086 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
5087 | break; |
5088 | ||
5089 | case M_BLEUL_I: | |
5090 | likely = 1; | |
5091 | case M_BLEU_I: | |
5092 | if (sreg == 0 | |
ca4e0257 | 5093 | || (HAVE_32BIT_GPRS |
252b5132 | 5094 | && imm_expr.X_op == O_constant |
956cd1d6 | 5095 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
5096 | goto do_true; |
5097 | if (imm_expr.X_op != O_constant) | |
5098 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 5099 | ++imm_expr.X_add_number; |
252b5132 RH |
5100 | /* FALLTHROUGH */ |
5101 | case M_BLTU_I: | |
5102 | case M_BLTUL_I: | |
5103 | if (mask == M_BLTUL_I) | |
5104 | likely = 1; | |
5105 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5106 | goto do_false; | |
5107 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5108 | { | |
67c0d1eb | 5109 | macro_build (&offset_expr, likely ? "beql" : "beq", |
252b5132 | 5110 | "s,t,p", sreg, 0); |
8fc2e39e | 5111 | break; |
252b5132 | 5112 | } |
8fc2e39e | 5113 | used_at = 1; |
67c0d1eb RS |
5114 | set_at (sreg, 1); |
5115 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5116 | break; |
5117 | ||
5118 | case M_BLTL: | |
5119 | likely = 1; | |
5120 | case M_BLT: | |
5121 | if (treg == 0) | |
5122 | { | |
67c0d1eb | 5123 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", sreg); |
8fc2e39e | 5124 | break; |
252b5132 RH |
5125 | } |
5126 | if (sreg == 0) | |
5127 | { | |
67c0d1eb | 5128 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", treg); |
8fc2e39e | 5129 | break; |
252b5132 | 5130 | } |
8fc2e39e | 5131 | used_at = 1; |
67c0d1eb RS |
5132 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); |
5133 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5134 | break; |
5135 | ||
5136 | case M_BLTUL: | |
5137 | likely = 1; | |
5138 | case M_BLTU: | |
5139 | if (treg == 0) | |
5140 | goto do_false; | |
5141 | if (sreg == 0) | |
5142 | { | |
67c0d1eb | 5143 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 5144 | "s,t,p", 0, treg); |
8fc2e39e | 5145 | break; |
252b5132 | 5146 | } |
8fc2e39e | 5147 | used_at = 1; |
67c0d1eb RS |
5148 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); |
5149 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
5150 | break; |
5151 | ||
5f74bc13 CD |
5152 | case M_DEXT: |
5153 | { | |
5154 | unsigned long pos; | |
5155 | unsigned long size; | |
5156 | ||
5157 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) | |
5158 | { | |
5159 | as_bad (_("Unsupported large constant")); | |
5160 | pos = size = 1; | |
5161 | } | |
5162 | else | |
5163 | { | |
5164 | pos = (unsigned long) imm_expr.X_add_number; | |
5165 | size = (unsigned long) imm2_expr.X_add_number; | |
5166 | } | |
5167 | ||
5168 | if (pos > 63) | |
5169 | { | |
5170 | as_bad (_("Improper position (%lu)"), pos); | |
5171 | pos = 1; | |
5172 | } | |
5173 | if (size == 0 || size > 64 | |
5174 | || (pos + size - 1) > 63) | |
5175 | { | |
5176 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
5177 | size, pos); | |
5178 | size = 1; | |
5179 | } | |
5180 | ||
5181 | if (size <= 32 && pos < 32) | |
5182 | { | |
5183 | s = "dext"; | |
5184 | fmt = "t,r,+A,+C"; | |
5185 | } | |
5186 | else if (size <= 32) | |
5187 | { | |
5188 | s = "dextu"; | |
5189 | fmt = "t,r,+E,+H"; | |
5190 | } | |
5191 | else | |
5192 | { | |
5193 | s = "dextm"; | |
5194 | fmt = "t,r,+A,+G"; | |
5195 | } | |
67c0d1eb | 5196 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, pos, size - 1); |
5f74bc13 | 5197 | } |
8fc2e39e | 5198 | break; |
5f74bc13 CD |
5199 | |
5200 | case M_DINS: | |
5201 | { | |
5202 | unsigned long pos; | |
5203 | unsigned long size; | |
5204 | ||
5205 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) | |
5206 | { | |
5207 | as_bad (_("Unsupported large constant")); | |
5208 | pos = size = 1; | |
5209 | } | |
5210 | else | |
5211 | { | |
5212 | pos = (unsigned long) imm_expr.X_add_number; | |
5213 | size = (unsigned long) imm2_expr.X_add_number; | |
5214 | } | |
5215 | ||
5216 | if (pos > 63) | |
5217 | { | |
5218 | as_bad (_("Improper position (%lu)"), pos); | |
5219 | pos = 1; | |
5220 | } | |
5221 | if (size == 0 || size > 64 | |
5222 | || (pos + size - 1) > 63) | |
5223 | { | |
5224 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
5225 | size, pos); | |
5226 | size = 1; | |
5227 | } | |
5228 | ||
5229 | if (pos < 32 && (pos + size - 1) < 32) | |
5230 | { | |
5231 | s = "dins"; | |
5232 | fmt = "t,r,+A,+B"; | |
5233 | } | |
5234 | else if (pos >= 32) | |
5235 | { | |
5236 | s = "dinsu"; | |
5237 | fmt = "t,r,+E,+F"; | |
5238 | } | |
5239 | else | |
5240 | { | |
5241 | s = "dinsm"; | |
5242 | fmt = "t,r,+A,+F"; | |
5243 | } | |
67c0d1eb RS |
5244 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, pos, |
5245 | pos + size - 1); | |
5f74bc13 | 5246 | } |
8fc2e39e | 5247 | break; |
5f74bc13 | 5248 | |
252b5132 RH |
5249 | case M_DDIV_3: |
5250 | dbl = 1; | |
5251 | case M_DIV_3: | |
5252 | s = "mflo"; | |
5253 | goto do_div3; | |
5254 | case M_DREM_3: | |
5255 | dbl = 1; | |
5256 | case M_REM_3: | |
5257 | s = "mfhi"; | |
5258 | do_div3: | |
5259 | if (treg == 0) | |
5260 | { | |
5261 | as_warn (_("Divide by zero.")); | |
5262 | if (mips_trap) | |
67c0d1eb | 5263 | macro_build (NULL, "teq", "s,t,q", 0, 0, 7); |
252b5132 | 5264 | else |
67c0d1eb | 5265 | macro_build (NULL, "break", "c", 7); |
8fc2e39e | 5266 | break; |
252b5132 RH |
5267 | } |
5268 | ||
7d10b47d | 5269 | start_noreorder (); |
252b5132 RH |
5270 | if (mips_trap) |
5271 | { | |
67c0d1eb RS |
5272 | macro_build (NULL, "teq", "s,t,q", treg, 0, 7); |
5273 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); | |
252b5132 RH |
5274 | } |
5275 | else | |
5276 | { | |
5277 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5278 | macro_build (&expr1, "bne", "s,t,p", treg, 0); |
5279 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); | |
5280 | macro_build (NULL, "break", "c", 7); | |
252b5132 RH |
5281 | } |
5282 | expr1.X_add_number = -1; | |
8fc2e39e | 5283 | used_at = 1; |
f6a22291 | 5284 | load_register (AT, &expr1, dbl); |
252b5132 | 5285 | expr1.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); |
67c0d1eb | 5286 | macro_build (&expr1, "bne", "s,t,p", treg, AT); |
252b5132 RH |
5287 | if (dbl) |
5288 | { | |
5289 | expr1.X_add_number = 1; | |
f6a22291 | 5290 | load_register (AT, &expr1, dbl); |
67c0d1eb | 5291 | macro_build (NULL, "dsll32", "d,w,<", AT, AT, 31); |
252b5132 RH |
5292 | } |
5293 | else | |
5294 | { | |
5295 | expr1.X_add_number = 0x80000000; | |
67c0d1eb | 5296 | macro_build (&expr1, "lui", "t,u", AT, BFD_RELOC_HI16); |
252b5132 RH |
5297 | } |
5298 | if (mips_trap) | |
5299 | { | |
67c0d1eb | 5300 | macro_build (NULL, "teq", "s,t,q", sreg, AT, 6); |
252b5132 RH |
5301 | /* We want to close the noreorder block as soon as possible, so |
5302 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5303 | end_noreorder (); |
252b5132 RH |
5304 | } |
5305 | else | |
5306 | { | |
5307 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5308 | macro_build (&expr1, "bne", "s,t,p", sreg, AT); |
5309 | macro_build (NULL, "nop", "", 0); | |
252b5132 RH |
5310 | |
5311 | /* We want to close the noreorder block as soon as possible, so | |
5312 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5313 | end_noreorder (); |
252b5132 | 5314 | |
67c0d1eb | 5315 | macro_build (NULL, "break", "c", 6); |
252b5132 | 5316 | } |
67c0d1eb | 5317 | macro_build (NULL, s, "d", dreg); |
252b5132 RH |
5318 | break; |
5319 | ||
5320 | case M_DIV_3I: | |
5321 | s = "div"; | |
5322 | s2 = "mflo"; | |
5323 | goto do_divi; | |
5324 | case M_DIVU_3I: | |
5325 | s = "divu"; | |
5326 | s2 = "mflo"; | |
5327 | goto do_divi; | |
5328 | case M_REM_3I: | |
5329 | s = "div"; | |
5330 | s2 = "mfhi"; | |
5331 | goto do_divi; | |
5332 | case M_REMU_3I: | |
5333 | s = "divu"; | |
5334 | s2 = "mfhi"; | |
5335 | goto do_divi; | |
5336 | case M_DDIV_3I: | |
5337 | dbl = 1; | |
5338 | s = "ddiv"; | |
5339 | s2 = "mflo"; | |
5340 | goto do_divi; | |
5341 | case M_DDIVU_3I: | |
5342 | dbl = 1; | |
5343 | s = "ddivu"; | |
5344 | s2 = "mflo"; | |
5345 | goto do_divi; | |
5346 | case M_DREM_3I: | |
5347 | dbl = 1; | |
5348 | s = "ddiv"; | |
5349 | s2 = "mfhi"; | |
5350 | goto do_divi; | |
5351 | case M_DREMU_3I: | |
5352 | dbl = 1; | |
5353 | s = "ddivu"; | |
5354 | s2 = "mfhi"; | |
5355 | do_divi: | |
5356 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5357 | { | |
5358 | as_warn (_("Divide by zero.")); | |
5359 | if (mips_trap) | |
67c0d1eb | 5360 | macro_build (NULL, "teq", "s,t,q", 0, 0, 7); |
252b5132 | 5361 | else |
67c0d1eb | 5362 | macro_build (NULL, "break", "c", 7); |
8fc2e39e | 5363 | break; |
252b5132 RH |
5364 | } |
5365 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5366 | { | |
5367 | if (strcmp (s2, "mflo") == 0) | |
67c0d1eb | 5368 | move_register (dreg, sreg); |
252b5132 | 5369 | else |
67c0d1eb | 5370 | move_register (dreg, 0); |
8fc2e39e | 5371 | break; |
252b5132 RH |
5372 | } |
5373 | if (imm_expr.X_op == O_constant | |
5374 | && imm_expr.X_add_number == -1 | |
5375 | && s[strlen (s) - 1] != 'u') | |
5376 | { | |
5377 | if (strcmp (s2, "mflo") == 0) | |
5378 | { | |
67c0d1eb | 5379 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", dreg, sreg); |
252b5132 RH |
5380 | } |
5381 | else | |
67c0d1eb | 5382 | move_register (dreg, 0); |
8fc2e39e | 5383 | break; |
252b5132 RH |
5384 | } |
5385 | ||
8fc2e39e | 5386 | used_at = 1; |
67c0d1eb RS |
5387 | load_register (AT, &imm_expr, dbl); |
5388 | macro_build (NULL, s, "z,s,t", sreg, AT); | |
5389 | macro_build (NULL, s2, "d", dreg); | |
252b5132 RH |
5390 | break; |
5391 | ||
5392 | case M_DIVU_3: | |
5393 | s = "divu"; | |
5394 | s2 = "mflo"; | |
5395 | goto do_divu3; | |
5396 | case M_REMU_3: | |
5397 | s = "divu"; | |
5398 | s2 = "mfhi"; | |
5399 | goto do_divu3; | |
5400 | case M_DDIVU_3: | |
5401 | s = "ddivu"; | |
5402 | s2 = "mflo"; | |
5403 | goto do_divu3; | |
5404 | case M_DREMU_3: | |
5405 | s = "ddivu"; | |
5406 | s2 = "mfhi"; | |
5407 | do_divu3: | |
7d10b47d | 5408 | start_noreorder (); |
252b5132 RH |
5409 | if (mips_trap) |
5410 | { | |
67c0d1eb RS |
5411 | macro_build (NULL, "teq", "s,t,q", treg, 0, 7); |
5412 | macro_build (NULL, s, "z,s,t", sreg, treg); | |
252b5132 RH |
5413 | /* We want to close the noreorder block as soon as possible, so |
5414 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5415 | end_noreorder (); |
252b5132 RH |
5416 | } |
5417 | else | |
5418 | { | |
5419 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5420 | macro_build (&expr1, "bne", "s,t,p", treg, 0); |
5421 | macro_build (NULL, s, "z,s,t", sreg, treg); | |
252b5132 RH |
5422 | |
5423 | /* We want to close the noreorder block as soon as possible, so | |
5424 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5425 | end_noreorder (); |
67c0d1eb | 5426 | macro_build (NULL, "break", "c", 7); |
252b5132 | 5427 | } |
67c0d1eb | 5428 | macro_build (NULL, s2, "d", dreg); |
8fc2e39e | 5429 | break; |
252b5132 | 5430 | |
1abe91b1 MR |
5431 | case M_DLCA_AB: |
5432 | dbl = 1; | |
5433 | case M_LCA_AB: | |
5434 | call = 1; | |
5435 | goto do_la; | |
252b5132 RH |
5436 | case M_DLA_AB: |
5437 | dbl = 1; | |
5438 | case M_LA_AB: | |
1abe91b1 | 5439 | do_la: |
252b5132 RH |
5440 | /* Load the address of a symbol into a register. If breg is not |
5441 | zero, we then add a base register to it. */ | |
5442 | ||
3bec30a8 TS |
5443 | if (dbl && HAVE_32BIT_GPRS) |
5444 | as_warn (_("dla used to load 32-bit register")); | |
5445 | ||
c90bbe5b | 5446 | if (! dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
5447 | as_warn (_("la used to load 64-bit address")); |
5448 | ||
0c11417f MR |
5449 | if (offset_expr.X_op == O_constant |
5450 | && offset_expr.X_add_number >= -0x8000 | |
5451 | && offset_expr.X_add_number < 0x8000) | |
5452 | { | |
aed1a261 | 5453 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
17a2f251 | 5454 | "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 5455 | break; |
0c11417f MR |
5456 | } |
5457 | ||
741fe287 | 5458 | if (mips_opts.at && (treg == breg)) |
afdbd6d0 CD |
5459 | { |
5460 | tempreg = AT; | |
5461 | used_at = 1; | |
5462 | } | |
5463 | else | |
5464 | { | |
5465 | tempreg = treg; | |
afdbd6d0 CD |
5466 | } |
5467 | ||
252b5132 RH |
5468 | if (offset_expr.X_op != O_symbol |
5469 | && offset_expr.X_op != O_constant) | |
5470 | { | |
5471 | as_bad (_("expression too complex")); | |
5472 | offset_expr.X_op = O_constant; | |
5473 | } | |
5474 | ||
252b5132 | 5475 | if (offset_expr.X_op == O_constant) |
aed1a261 | 5476 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
5477 | else if (mips_pic == NO_PIC) |
5478 | { | |
d6bc6245 | 5479 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 5480 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
5481 | Otherwise we want |
5482 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5483 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5484 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 5485 | so we may as well always use the latter form. |
76b3015f | 5486 | |
6caf9ef4 TS |
5487 | With 64bit address space and a usable $at we want |
5488 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5489 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5490 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5491 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
5492 | dsll32 $tempreg,0 | |
5493 | daddu $tempreg,$tempreg,$at | |
5494 | ||
5495 | If $at is already in use, we use a path which is suboptimal | |
5496 | on superscalar processors. | |
5497 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5498 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5499 | dsll $tempreg,16 | |
5500 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5501 | dsll $tempreg,16 | |
5502 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
5503 | ||
5504 | For GP relative symbols in 64bit address space we can use | |
5505 | the same sequence as in 32bit address space. */ | |
aed1a261 | 5506 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 5507 | { |
6caf9ef4 TS |
5508 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
5509 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
5510 | { | |
5511 | relax_start (offset_expr.X_add_symbol); | |
5512 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
5513 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
5514 | relax_switch (); | |
5515 | } | |
d6bc6245 | 5516 | |
741fe287 | 5517 | if (used_at == 0 && mips_opts.at) |
98d3f06f | 5518 | { |
67c0d1eb | 5519 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5520 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 5521 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5522 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 5523 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5524 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 5525 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5526 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb RS |
5527 | macro_build (NULL, "dsll32", "d,w,<", tempreg, tempreg, 0); |
5528 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); | |
98d3f06f KH |
5529 | used_at = 1; |
5530 | } | |
5531 | else | |
5532 | { | |
67c0d1eb | 5533 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5534 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 5535 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5536 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb RS |
5537 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); |
5538 | macro_build (&offset_expr, "daddiu", "t,r,j", | |
17a2f251 | 5539 | tempreg, tempreg, BFD_RELOC_HI16_S); |
67c0d1eb RS |
5540 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); |
5541 | macro_build (&offset_expr, "daddiu", "t,r,j", | |
17a2f251 | 5542 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 5543 | } |
6caf9ef4 TS |
5544 | |
5545 | if (mips_relax.sequence) | |
5546 | relax_end (); | |
98d3f06f KH |
5547 | } |
5548 | else | |
5549 | { | |
5550 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 5551 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 5552 | { |
4d7206a2 | 5553 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5554 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5555 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 5556 | relax_switch (); |
98d3f06f | 5557 | } |
6943caf0 ILT |
5558 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
5559 | as_bad (_("offset too large")); | |
67c0d1eb RS |
5560 | macro_build_lui (&offset_expr, tempreg); |
5561 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
5562 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
5563 | if (mips_relax.sequence) |
5564 | relax_end (); | |
98d3f06f | 5565 | } |
252b5132 | 5566 | } |
0a44bf69 | 5567 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 5568 | { |
9117d219 NC |
5569 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
5570 | ||
252b5132 RH |
5571 | /* If this is a reference to an external symbol, and there |
5572 | is no constant, we want | |
5573 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 5574 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 5575 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
5576 | For a local symbol, we want |
5577 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5578 | nop | |
5579 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5580 | ||
5581 | If we have a small constant, and this is a reference to | |
5582 | an external symbol, we want | |
5583 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5584 | nop | |
5585 | addiu $tempreg,$tempreg,<constant> | |
5586 | For a local symbol, we want the same instruction | |
5587 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
5588 | addiu instruction. | |
5589 | ||
5590 | If we have a large constant, and this is a reference to | |
5591 | an external symbol, we want | |
5592 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5593 | lui $at,<hiconstant> | |
5594 | addiu $at,$at,<loconstant> | |
5595 | addu $tempreg,$tempreg,$at | |
5596 | For a local symbol, we want the same instruction | |
5597 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 5598 | addiu instruction. |
ed6fb7bd SC |
5599 | */ |
5600 | ||
4d7206a2 | 5601 | if (offset_expr.X_add_number == 0) |
252b5132 | 5602 | { |
0a44bf69 RS |
5603 | if (mips_pic == SVR4_PIC |
5604 | && breg == 0 | |
5605 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
5606 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
5607 | ||
5608 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
5609 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5610 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 5611 | if (breg != 0) |
252b5132 RH |
5612 | { |
5613 | /* We're going to put in an addu instruction using | |
5614 | tempreg, so we may as well insert the nop right | |
5615 | now. */ | |
269137b2 | 5616 | load_delay_nop (); |
252b5132 | 5617 | } |
4d7206a2 | 5618 | relax_switch (); |
67c0d1eb RS |
5619 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5620 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 5621 | load_delay_nop (); |
67c0d1eb RS |
5622 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5623 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 5624 | relax_end (); |
252b5132 RH |
5625 | /* FIXME: If breg == 0, and the next instruction uses |
5626 | $tempreg, then if this variant case is used an extra | |
5627 | nop will be generated. */ | |
5628 | } | |
4d7206a2 RS |
5629 | else if (offset_expr.X_add_number >= -0x8000 |
5630 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 5631 | { |
67c0d1eb | 5632 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 5633 | load_delay_nop (); |
67c0d1eb | 5634 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
5635 | } |
5636 | else | |
5637 | { | |
4d7206a2 RS |
5638 | expr1.X_add_number = offset_expr.X_add_number; |
5639 | offset_expr.X_add_number = | |
5640 | ((offset_expr.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
67c0d1eb | 5641 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 5642 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
5643 | /* If we are going to add in a base register, and the |
5644 | target register and the base register are the same, | |
5645 | then we are using AT as a temporary register. Since | |
5646 | we want to load the constant into AT, we add our | |
5647 | current AT (from the global offset table) and the | |
5648 | register into the register now, and pretend we were | |
5649 | not using a base register. */ | |
67c0d1eb | 5650 | if (breg == treg) |
252b5132 | 5651 | { |
269137b2 | 5652 | load_delay_nop (); |
67c0d1eb | 5653 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5654 | treg, AT, breg); |
252b5132 RH |
5655 | breg = 0; |
5656 | tempreg = treg; | |
252b5132 | 5657 | } |
f6a22291 | 5658 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
5659 | used_at = 1; |
5660 | } | |
5661 | } | |
0a44bf69 | 5662 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 5663 | { |
67c0d1eb | 5664 | int add_breg_early = 0; |
f5040a92 AO |
5665 | |
5666 | /* If this is a reference to an external, and there is no | |
5667 | constant, or local symbol (*), with or without a | |
5668 | constant, we want | |
5669 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 5670 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
5671 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
5672 | ||
5673 | If we have a small constant, and this is a reference to | |
5674 | an external symbol, we want | |
5675 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5676 | addiu $tempreg,$tempreg,<constant> | |
5677 | ||
5678 | If we have a large constant, and this is a reference to | |
5679 | an external symbol, we want | |
5680 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5681 | lui $at,<hiconstant> | |
5682 | addiu $at,$at,<loconstant> | |
5683 | addu $tempreg,$tempreg,$at | |
5684 | ||
5685 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
5686 | local symbols, even though it introduces an additional | |
5687 | instruction. */ | |
5688 | ||
f5040a92 AO |
5689 | if (offset_expr.X_add_number) |
5690 | { | |
4d7206a2 | 5691 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
5692 | offset_expr.X_add_number = 0; |
5693 | ||
4d7206a2 | 5694 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5695 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5696 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5697 | |
5698 | if (expr1.X_add_number >= -0x8000 | |
5699 | && expr1.X_add_number < 0x8000) | |
5700 | { | |
67c0d1eb RS |
5701 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
5702 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 5703 | } |
ecd13cd3 | 5704 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 AO |
5705 | { |
5706 | int dreg; | |
5707 | ||
5708 | /* If we are going to add in a base register, and the | |
5709 | target register and the base register are the same, | |
5710 | then we are using AT as a temporary register. Since | |
5711 | we want to load the constant into AT, we add our | |
5712 | current AT (from the global offset table) and the | |
5713 | register into the register now, and pretend we were | |
5714 | not using a base register. */ | |
5715 | if (breg != treg) | |
5716 | dreg = tempreg; | |
5717 | else | |
5718 | { | |
5719 | assert (tempreg == AT); | |
67c0d1eb RS |
5720 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5721 | treg, AT, breg); | |
f5040a92 | 5722 | dreg = treg; |
67c0d1eb | 5723 | add_breg_early = 1; |
f5040a92 AO |
5724 | } |
5725 | ||
f6a22291 | 5726 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 5727 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5728 | dreg, dreg, AT); |
f5040a92 | 5729 | |
f5040a92 AO |
5730 | used_at = 1; |
5731 | } | |
5732 | else | |
5733 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
5734 | ||
4d7206a2 | 5735 | relax_switch (); |
f5040a92 AO |
5736 | offset_expr.X_add_number = expr1.X_add_number; |
5737 | ||
67c0d1eb RS |
5738 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5739 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
5740 | if (add_breg_early) | |
f5040a92 | 5741 | { |
67c0d1eb | 5742 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
f899b4b8 | 5743 | treg, tempreg, breg); |
f5040a92 AO |
5744 | breg = 0; |
5745 | tempreg = treg; | |
5746 | } | |
4d7206a2 | 5747 | relax_end (); |
f5040a92 | 5748 | } |
4d7206a2 | 5749 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 5750 | { |
4d7206a2 | 5751 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5752 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5753 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 5754 | relax_switch (); |
67c0d1eb RS |
5755 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5756 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 5757 | relax_end (); |
f5040a92 | 5758 | } |
4d7206a2 | 5759 | else |
f5040a92 | 5760 | { |
67c0d1eb RS |
5761 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5762 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5763 | } |
5764 | } | |
0a44bf69 | 5765 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 5766 | { |
67c0d1eb | 5767 | int gpdelay; |
9117d219 NC |
5768 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
5769 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 5770 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
5771 | |
5772 | /* This is the large GOT case. If this is a reference to an | |
5773 | external symbol, and there is no constant, we want | |
5774 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5775 | addu $tempreg,$tempreg,$gp | |
5776 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 5777 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
5778 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
5779 | addu $tempreg,$tempreg,$gp | |
5780 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
5781 | For a local symbol, we want |
5782 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5783 | nop | |
5784 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5785 | ||
5786 | If we have a small constant, and this is a reference to | |
5787 | an external symbol, we want | |
5788 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5789 | addu $tempreg,$tempreg,$gp | |
5790 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5791 | nop | |
5792 | addiu $tempreg,$tempreg,<constant> | |
5793 | For a local symbol, we want | |
5794 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5795 | nop | |
5796 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
5797 | ||
5798 | If we have a large constant, and this is a reference to | |
5799 | an external symbol, we want | |
5800 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5801 | addu $tempreg,$tempreg,$gp | |
5802 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5803 | lui $at,<hiconstant> | |
5804 | addiu $at,$at,<loconstant> | |
5805 | addu $tempreg,$tempreg,$at | |
5806 | For a local symbol, we want | |
5807 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5808 | lui $at,<hiconstant> | |
5809 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
5810 | addu $tempreg,$tempreg,$at | |
f5040a92 | 5811 | */ |
438c16b8 | 5812 | |
252b5132 RH |
5813 | expr1.X_add_number = offset_expr.X_add_number; |
5814 | offset_expr.X_add_number = 0; | |
4d7206a2 | 5815 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 5816 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
5817 | if (expr1.X_add_number == 0 && breg == 0 |
5818 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
5819 | { |
5820 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
5821 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
5822 | } | |
67c0d1eb RS |
5823 | macro_build (&offset_expr, "lui", "t,u", tempreg, lui_reloc_type); |
5824 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 5825 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 5826 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 5827 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
5828 | if (expr1.X_add_number == 0) |
5829 | { | |
67c0d1eb | 5830 | if (breg != 0) |
252b5132 RH |
5831 | { |
5832 | /* We're going to put in an addu instruction using | |
5833 | tempreg, so we may as well insert the nop right | |
5834 | now. */ | |
269137b2 | 5835 | load_delay_nop (); |
252b5132 | 5836 | } |
252b5132 RH |
5837 | } |
5838 | else if (expr1.X_add_number >= -0x8000 | |
5839 | && expr1.X_add_number < 0x8000) | |
5840 | { | |
269137b2 | 5841 | load_delay_nop (); |
67c0d1eb | 5842 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5843 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
5844 | } |
5845 | else | |
5846 | { | |
67c0d1eb | 5847 | int dreg; |
252b5132 RH |
5848 | |
5849 | /* If we are going to add in a base register, and the | |
5850 | target register and the base register are the same, | |
5851 | then we are using AT as a temporary register. Since | |
5852 | we want to load the constant into AT, we add our | |
5853 | current AT (from the global offset table) and the | |
5854 | register into the register now, and pretend we were | |
5855 | not using a base register. */ | |
5856 | if (breg != treg) | |
67c0d1eb | 5857 | dreg = tempreg; |
252b5132 RH |
5858 | else |
5859 | { | |
5860 | assert (tempreg == AT); | |
269137b2 | 5861 | load_delay_nop (); |
67c0d1eb | 5862 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5863 | treg, AT, breg); |
252b5132 | 5864 | dreg = treg; |
252b5132 RH |
5865 | } |
5866 | ||
f6a22291 | 5867 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 5868 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 5869 | |
252b5132 RH |
5870 | used_at = 1; |
5871 | } | |
4d7206a2 RS |
5872 | offset_expr.X_add_number = |
5873 | ((expr1.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
5874 | relax_switch (); | |
252b5132 | 5875 | |
67c0d1eb | 5876 | if (gpdelay) |
252b5132 RH |
5877 | { |
5878 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 5879 | the first instruction on the main stream does not. */ |
67c0d1eb | 5880 | macro_build (NULL, "nop", ""); |
252b5132 | 5881 | } |
ed6fb7bd | 5882 | |
67c0d1eb RS |
5883 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5884 | local_reloc_type, mips_gp_register); | |
f5040a92 | 5885 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
5886 | && expr1.X_add_number < 0x8000) |
5887 | { | |
269137b2 | 5888 | load_delay_nop (); |
67c0d1eb RS |
5889 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5890 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 5891 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
5892 | register, the external symbol case ended with a load, |
5893 | so if the symbol turns out to not be external, and | |
5894 | the next instruction uses tempreg, an unnecessary nop | |
5895 | will be inserted. */ | |
252b5132 RH |
5896 | } |
5897 | else | |
5898 | { | |
5899 | if (breg == treg) | |
5900 | { | |
5901 | /* We must add in the base register now, as in the | |
f5040a92 | 5902 | external symbol case. */ |
252b5132 | 5903 | assert (tempreg == AT); |
269137b2 | 5904 | load_delay_nop (); |
67c0d1eb | 5905 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5906 | treg, AT, breg); |
252b5132 RH |
5907 | tempreg = treg; |
5908 | /* We set breg to 0 because we have arranged to add | |
f5040a92 | 5909 | it in in both cases. */ |
252b5132 RH |
5910 | breg = 0; |
5911 | } | |
5912 | ||
67c0d1eb RS |
5913 | macro_build_lui (&expr1, AT); |
5914 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 5915 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 5916 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5917 | tempreg, tempreg, AT); |
8fc2e39e | 5918 | used_at = 1; |
252b5132 | 5919 | } |
4d7206a2 | 5920 | relax_end (); |
252b5132 | 5921 | } |
0a44bf69 | 5922 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 5923 | { |
f5040a92 AO |
5924 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
5925 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 5926 | int add_breg_early = 0; |
f5040a92 AO |
5927 | |
5928 | /* This is the large GOT case. If this is a reference to an | |
5929 | external symbol, and there is no constant, we want | |
5930 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5931 | add $tempreg,$tempreg,$gp | |
5932 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 5933 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
5934 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
5935 | add $tempreg,$tempreg,$gp | |
5936 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
5937 | ||
5938 | If we have a small constant, and this is a reference to | |
5939 | an external symbol, we want | |
5940 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5941 | add $tempreg,$tempreg,$gp | |
5942 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5943 | addi $tempreg,$tempreg,<constant> | |
5944 | ||
5945 | If we have a large constant, and this is a reference to | |
5946 | an external symbol, we want | |
5947 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5948 | addu $tempreg,$tempreg,$gp | |
5949 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5950 | lui $at,<hiconstant> | |
5951 | addi $at,$at,<loconstant> | |
5952 | add $tempreg,$tempreg,$at | |
5953 | ||
5954 | If we have NewABI, and we know it's a local symbol, we want | |
5955 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
5956 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
5957 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
5958 | ||
4d7206a2 | 5959 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 5960 | |
4d7206a2 | 5961 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
5962 | offset_expr.X_add_number = 0; |
5963 | ||
1abe91b1 MR |
5964 | if (expr1.X_add_number == 0 && breg == 0 |
5965 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
5966 | { |
5967 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
5968 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
5969 | } | |
67c0d1eb RS |
5970 | macro_build (&offset_expr, "lui", "t,u", tempreg, lui_reloc_type); |
5971 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 5972 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
5973 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5974 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
5975 | |
5976 | if (expr1.X_add_number == 0) | |
4d7206a2 | 5977 | ; |
f5040a92 AO |
5978 | else if (expr1.X_add_number >= -0x8000 |
5979 | && expr1.X_add_number < 0x8000) | |
5980 | { | |
67c0d1eb | 5981 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5982 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 5983 | } |
ecd13cd3 | 5984 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 AO |
5985 | { |
5986 | int dreg; | |
5987 | ||
5988 | /* If we are going to add in a base register, and the | |
5989 | target register and the base register are the same, | |
5990 | then we are using AT as a temporary register. Since | |
5991 | we want to load the constant into AT, we add our | |
5992 | current AT (from the global offset table) and the | |
5993 | register into the register now, and pretend we were | |
5994 | not using a base register. */ | |
5995 | if (breg != treg) | |
5996 | dreg = tempreg; | |
5997 | else | |
5998 | { | |
5999 | assert (tempreg == AT); | |
67c0d1eb | 6000 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6001 | treg, AT, breg); |
f5040a92 | 6002 | dreg = treg; |
67c0d1eb | 6003 | add_breg_early = 1; |
f5040a92 AO |
6004 | } |
6005 | ||
f6a22291 | 6006 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 6007 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 6008 | |
f5040a92 AO |
6009 | used_at = 1; |
6010 | } | |
6011 | else | |
6012 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
6013 | ||
4d7206a2 | 6014 | relax_switch (); |
f5040a92 | 6015 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
6016 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6017 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
6018 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
6019 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
6020 | if (add_breg_early) | |
f5040a92 | 6021 | { |
67c0d1eb | 6022 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6023 | treg, tempreg, breg); |
f5040a92 AO |
6024 | breg = 0; |
6025 | tempreg = treg; | |
6026 | } | |
4d7206a2 | 6027 | relax_end (); |
f5040a92 | 6028 | } |
252b5132 RH |
6029 | else |
6030 | abort (); | |
6031 | ||
6032 | if (breg != 0) | |
aed1a261 | 6033 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", treg, tempreg, breg); |
252b5132 RH |
6034 | break; |
6035 | ||
6036 | case M_J_A: | |
6037 | /* The j instruction may not be used in PIC code, since it | |
6038 | requires an absolute address. We convert it to a b | |
6039 | instruction. */ | |
6040 | if (mips_pic == NO_PIC) | |
67c0d1eb | 6041 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 6042 | else |
67c0d1eb | 6043 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 6044 | break; |
252b5132 RH |
6045 | |
6046 | /* The jal instructions must be handled as macros because when | |
6047 | generating PIC code they expand to multi-instruction | |
6048 | sequences. Normally they are simple instructions. */ | |
6049 | case M_JAL_1: | |
6050 | dreg = RA; | |
6051 | /* Fall through. */ | |
6052 | case M_JAL_2: | |
3e722fb5 | 6053 | if (mips_pic == NO_PIC) |
67c0d1eb | 6054 | macro_build (NULL, "jalr", "d,s", dreg, sreg); |
0a44bf69 | 6055 | else |
252b5132 RH |
6056 | { |
6057 | if (sreg != PIC_CALL_REG) | |
6058 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 6059 | |
67c0d1eb | 6060 | macro_build (NULL, "jalr", "d,s", dreg, sreg); |
0a44bf69 | 6061 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 6062 | { |
6478892d TS |
6063 | if (mips_cprestore_offset < 0) |
6064 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6065 | else | |
6066 | { | |
7a621144 DJ |
6067 | if (! mips_frame_reg_valid) |
6068 | { | |
6069 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
6070 | /* Quiet this warning. */ | |
6071 | mips_frame_reg_valid = 1; | |
6072 | } | |
6073 | if (! mips_cprestore_valid) | |
6074 | { | |
6075 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6076 | /* Quiet this warning. */ | |
6077 | mips_cprestore_valid = 1; | |
6078 | } | |
6478892d | 6079 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 6080 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 6081 | mips_gp_register, |
256ab948 TS |
6082 | mips_frame_reg, |
6083 | HAVE_64BIT_ADDRESSES); | |
6478892d | 6084 | } |
252b5132 RH |
6085 | } |
6086 | } | |
252b5132 | 6087 | |
8fc2e39e | 6088 | break; |
252b5132 RH |
6089 | |
6090 | case M_JAL_A: | |
6091 | if (mips_pic == NO_PIC) | |
67c0d1eb | 6092 | macro_build (&offset_expr, "jal", "a"); |
252b5132 RH |
6093 | else if (mips_pic == SVR4_PIC) |
6094 | { | |
6095 | /* If this is a reference to an external symbol, and we are | |
6096 | using a small GOT, we want | |
6097 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
6098 | nop | |
f9419b05 | 6099 | jalr $ra,$25 |
252b5132 RH |
6100 | nop |
6101 | lw $gp,cprestore($sp) | |
6102 | The cprestore value is set using the .cprestore | |
6103 | pseudo-op. If we are using a big GOT, we want | |
6104 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
6105 | addu $25,$25,$gp | |
6106 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
6107 | nop | |
f9419b05 | 6108 | jalr $ra,$25 |
252b5132 RH |
6109 | nop |
6110 | lw $gp,cprestore($sp) | |
6111 | If the symbol is not external, we want | |
6112 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6113 | nop | |
6114 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 6115 | jalr $ra,$25 |
252b5132 | 6116 | nop |
438c16b8 | 6117 | lw $gp,cprestore($sp) |
f5040a92 AO |
6118 | |
6119 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
6120 | sequences above, minus nops, unless the symbol is local, | |
6121 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
6122 | GOT_DISP. */ | |
438c16b8 | 6123 | if (HAVE_NEWABI) |
252b5132 | 6124 | { |
f5040a92 AO |
6125 | if (! mips_big_got) |
6126 | { | |
4d7206a2 | 6127 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6128 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6129 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 6130 | mips_gp_register); |
4d7206a2 | 6131 | relax_switch (); |
67c0d1eb RS |
6132 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6133 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
6134 | mips_gp_register); |
6135 | relax_end (); | |
f5040a92 AO |
6136 | } |
6137 | else | |
6138 | { | |
4d7206a2 | 6139 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6140 | macro_build (&offset_expr, "lui", "t,u", PIC_CALL_REG, |
6141 | BFD_RELOC_MIPS_CALL_HI16); | |
6142 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
6143 | PIC_CALL_REG, mips_gp_register); | |
6144 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
6145 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
6146 | PIC_CALL_REG); | |
4d7206a2 | 6147 | relax_switch (); |
67c0d1eb RS |
6148 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6149 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
6150 | mips_gp_register); | |
6151 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
6152 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 6153 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 6154 | relax_end (); |
f5040a92 | 6155 | } |
684022ea | 6156 | |
67c0d1eb | 6157 | macro_build_jalr (&offset_expr); |
252b5132 RH |
6158 | } |
6159 | else | |
6160 | { | |
4d7206a2 | 6161 | relax_start (offset_expr.X_add_symbol); |
438c16b8 TS |
6162 | if (! mips_big_got) |
6163 | { | |
67c0d1eb RS |
6164 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6165 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 6166 | mips_gp_register); |
269137b2 | 6167 | load_delay_nop (); |
4d7206a2 | 6168 | relax_switch (); |
438c16b8 | 6169 | } |
252b5132 | 6170 | else |
252b5132 | 6171 | { |
67c0d1eb RS |
6172 | int gpdelay; |
6173 | ||
6174 | gpdelay = reg_needs_delay (mips_gp_register); | |
6175 | macro_build (&offset_expr, "lui", "t,u", PIC_CALL_REG, | |
6176 | BFD_RELOC_MIPS_CALL_HI16); | |
6177 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
6178 | PIC_CALL_REG, mips_gp_register); | |
6179 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
6180 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
6181 | PIC_CALL_REG); | |
269137b2 | 6182 | load_delay_nop (); |
4d7206a2 | 6183 | relax_switch (); |
67c0d1eb RS |
6184 | if (gpdelay) |
6185 | macro_build (NULL, "nop", ""); | |
252b5132 | 6186 | } |
67c0d1eb RS |
6187 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
6188 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 6189 | mips_gp_register); |
269137b2 | 6190 | load_delay_nop (); |
67c0d1eb RS |
6191 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
6192 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 6193 | relax_end (); |
67c0d1eb | 6194 | macro_build_jalr (&offset_expr); |
438c16b8 | 6195 | |
6478892d TS |
6196 | if (mips_cprestore_offset < 0) |
6197 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6198 | else | |
6199 | { | |
7a621144 DJ |
6200 | if (! mips_frame_reg_valid) |
6201 | { | |
6202 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
6203 | /* Quiet this warning. */ | |
6204 | mips_frame_reg_valid = 1; | |
6205 | } | |
6206 | if (! mips_cprestore_valid) | |
6207 | { | |
6208 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
6209 | /* Quiet this warning. */ | |
6210 | mips_cprestore_valid = 1; | |
6211 | } | |
6478892d | 6212 | if (mips_opts.noreorder) |
67c0d1eb | 6213 | macro_build (NULL, "nop", ""); |
6478892d | 6214 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 6215 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 6216 | mips_gp_register, |
256ab948 TS |
6217 | mips_frame_reg, |
6218 | HAVE_64BIT_ADDRESSES); | |
6478892d | 6219 | } |
252b5132 RH |
6220 | } |
6221 | } | |
0a44bf69 RS |
6222 | else if (mips_pic == VXWORKS_PIC) |
6223 | as_bad (_("Non-PIC jump used in PIC library")); | |
252b5132 RH |
6224 | else |
6225 | abort (); | |
6226 | ||
8fc2e39e | 6227 | break; |
252b5132 RH |
6228 | |
6229 | case M_LB_AB: | |
6230 | s = "lb"; | |
6231 | goto ld; | |
6232 | case M_LBU_AB: | |
6233 | s = "lbu"; | |
6234 | goto ld; | |
6235 | case M_LH_AB: | |
6236 | s = "lh"; | |
6237 | goto ld; | |
6238 | case M_LHU_AB: | |
6239 | s = "lhu"; | |
6240 | goto ld; | |
6241 | case M_LW_AB: | |
6242 | s = "lw"; | |
6243 | goto ld; | |
6244 | case M_LWC0_AB: | |
6245 | s = "lwc0"; | |
bdaaa2e1 | 6246 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6247 | coproc = 1; |
6248 | goto ld; | |
6249 | case M_LWC1_AB: | |
6250 | s = "lwc1"; | |
bdaaa2e1 | 6251 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6252 | coproc = 1; |
6253 | goto ld; | |
6254 | case M_LWC2_AB: | |
6255 | s = "lwc2"; | |
bdaaa2e1 | 6256 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6257 | coproc = 1; |
6258 | goto ld; | |
6259 | case M_LWC3_AB: | |
6260 | s = "lwc3"; | |
bdaaa2e1 | 6261 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6262 | coproc = 1; |
6263 | goto ld; | |
6264 | case M_LWL_AB: | |
6265 | s = "lwl"; | |
6266 | lr = 1; | |
6267 | goto ld; | |
6268 | case M_LWR_AB: | |
6269 | s = "lwr"; | |
6270 | lr = 1; | |
6271 | goto ld; | |
6272 | case M_LDC1_AB: | |
252b5132 | 6273 | s = "ldc1"; |
bdaaa2e1 | 6274 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6275 | coproc = 1; |
6276 | goto ld; | |
6277 | case M_LDC2_AB: | |
6278 | s = "ldc2"; | |
bdaaa2e1 | 6279 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6280 | coproc = 1; |
6281 | goto ld; | |
6282 | case M_LDC3_AB: | |
6283 | s = "ldc3"; | |
bdaaa2e1 | 6284 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6285 | coproc = 1; |
6286 | goto ld; | |
6287 | case M_LDL_AB: | |
6288 | s = "ldl"; | |
6289 | lr = 1; | |
6290 | goto ld; | |
6291 | case M_LDR_AB: | |
6292 | s = "ldr"; | |
6293 | lr = 1; | |
6294 | goto ld; | |
6295 | case M_LL_AB: | |
6296 | s = "ll"; | |
6297 | goto ld; | |
6298 | case M_LLD_AB: | |
6299 | s = "lld"; | |
6300 | goto ld; | |
6301 | case M_LWU_AB: | |
6302 | s = "lwu"; | |
6303 | ld: | |
8fc2e39e | 6304 | if (breg == treg || coproc || lr) |
252b5132 RH |
6305 | { |
6306 | tempreg = AT; | |
6307 | used_at = 1; | |
6308 | } | |
6309 | else | |
6310 | { | |
6311 | tempreg = treg; | |
252b5132 RH |
6312 | } |
6313 | goto ld_st; | |
6314 | case M_SB_AB: | |
6315 | s = "sb"; | |
6316 | goto st; | |
6317 | case M_SH_AB: | |
6318 | s = "sh"; | |
6319 | goto st; | |
6320 | case M_SW_AB: | |
6321 | s = "sw"; | |
6322 | goto st; | |
6323 | case M_SWC0_AB: | |
6324 | s = "swc0"; | |
bdaaa2e1 | 6325 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6326 | coproc = 1; |
6327 | goto st; | |
6328 | case M_SWC1_AB: | |
6329 | s = "swc1"; | |
bdaaa2e1 | 6330 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6331 | coproc = 1; |
6332 | goto st; | |
6333 | case M_SWC2_AB: | |
6334 | s = "swc2"; | |
bdaaa2e1 | 6335 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6336 | coproc = 1; |
6337 | goto st; | |
6338 | case M_SWC3_AB: | |
6339 | s = "swc3"; | |
bdaaa2e1 | 6340 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6341 | coproc = 1; |
6342 | goto st; | |
6343 | case M_SWL_AB: | |
6344 | s = "swl"; | |
6345 | goto st; | |
6346 | case M_SWR_AB: | |
6347 | s = "swr"; | |
6348 | goto st; | |
6349 | case M_SC_AB: | |
6350 | s = "sc"; | |
6351 | goto st; | |
6352 | case M_SCD_AB: | |
6353 | s = "scd"; | |
6354 | goto st; | |
d43b4baf TS |
6355 | case M_CACHE_AB: |
6356 | s = "cache"; | |
6357 | goto st; | |
252b5132 | 6358 | case M_SDC1_AB: |
252b5132 RH |
6359 | s = "sdc1"; |
6360 | coproc = 1; | |
bdaaa2e1 | 6361 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6362 | goto st; |
6363 | case M_SDC2_AB: | |
6364 | s = "sdc2"; | |
bdaaa2e1 | 6365 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6366 | coproc = 1; |
6367 | goto st; | |
6368 | case M_SDC3_AB: | |
6369 | s = "sdc3"; | |
bdaaa2e1 | 6370 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6371 | coproc = 1; |
6372 | goto st; | |
6373 | case M_SDL_AB: | |
6374 | s = "sdl"; | |
6375 | goto st; | |
6376 | case M_SDR_AB: | |
6377 | s = "sdr"; | |
6378 | st: | |
8fc2e39e TS |
6379 | tempreg = AT; |
6380 | used_at = 1; | |
252b5132 | 6381 | ld_st: |
b19e8a9b AN |
6382 | if (coproc |
6383 | && NO_ISA_COP (mips_opts.arch) | |
6384 | && (ip->insn_mo->pinfo2 & (INSN2_M_FP_S | INSN2_M_FP_D)) == 0) | |
6385 | { | |
6386 | as_bad (_("opcode not supported on this processor: %s"), | |
6387 | mips_cpu_info_from_arch (mips_opts.arch)->name); | |
6388 | break; | |
6389 | } | |
6390 | ||
bdaaa2e1 | 6391 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6392 | if (mask == M_LWC1_AB |
6393 | || mask == M_SWC1_AB | |
6394 | || mask == M_LDC1_AB | |
6395 | || mask == M_SDC1_AB | |
6396 | || mask == M_L_DAB | |
6397 | || mask == M_S_DAB) | |
6398 | fmt = "T,o(b)"; | |
d43b4baf TS |
6399 | else if (mask == M_CACHE_AB) |
6400 | fmt = "k,o(b)"; | |
252b5132 RH |
6401 | else if (coproc) |
6402 | fmt = "E,o(b)"; | |
6403 | else | |
6404 | fmt = "t,o(b)"; | |
6405 | ||
6406 | if (offset_expr.X_op != O_constant | |
6407 | && offset_expr.X_op != O_symbol) | |
6408 | { | |
6409 | as_bad (_("expression too complex")); | |
6410 | offset_expr.X_op = O_constant; | |
6411 | } | |
6412 | ||
2051e8c4 MR |
6413 | if (HAVE_32BIT_ADDRESSES |
6414 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
6415 | { |
6416 | char value [32]; | |
6417 | ||
6418 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 6419 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 6420 | } |
2051e8c4 | 6421 | |
252b5132 RH |
6422 | /* A constant expression in PIC code can be handled just as it |
6423 | is in non PIC code. */ | |
aed1a261 RS |
6424 | if (offset_expr.X_op == O_constant) |
6425 | { | |
aed1a261 RS |
6426 | expr1.X_add_number = ((offset_expr.X_add_number + 0x8000) |
6427 | & ~(bfd_vma) 0xffff); | |
2051e8c4 | 6428 | normalize_address_expr (&expr1); |
aed1a261 RS |
6429 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
6430 | if (breg != 0) | |
6431 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
6432 | tempreg, tempreg, breg); | |
6433 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, tempreg); | |
6434 | } | |
6435 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
6436 | { |
6437 | /* If this is a reference to a GP relative symbol, and there | |
6438 | is no base register, we want | |
cdf6fd85 | 6439 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
6440 | Otherwise, if there is no base register, we want |
6441 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6442 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6443 | If we have a constant, we need two instructions anyhow, | |
6444 | so we always use the latter form. | |
6445 | ||
6446 | If we have a base register, and this is a reference to a | |
6447 | GP relative symbol, we want | |
6448 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 6449 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
6450 | Otherwise we want |
6451 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6452 | addu $tempreg,$tempreg,$breg | |
6453 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 6454 | With a constant we always use the latter case. |
76b3015f | 6455 | |
d6bc6245 TS |
6456 | With 64bit address space and no base register and $at usable, |
6457 | we want | |
6458 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6459 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6460 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6461 | dsll32 $tempreg,0 | |
6462 | daddu $tempreg,$at | |
6463 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6464 | If we have a base register, we want | |
6465 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6466 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6467 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6468 | daddu $at,$breg | |
6469 | dsll32 $tempreg,0 | |
6470 | daddu $tempreg,$at | |
6471 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6472 | ||
6473 | Without $at we can't generate the optimal path for superscalar | |
6474 | processors here since this would require two temporary registers. | |
6475 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6476 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6477 | dsll $tempreg,16 | |
6478 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6479 | dsll $tempreg,16 | |
6480 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6481 | If we have a base register, we want | |
6482 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6483 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6484 | dsll $tempreg,16 | |
6485 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6486 | dsll $tempreg,16 | |
6487 | daddu $tempreg,$tempreg,$breg | |
6488 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 | 6489 | |
6caf9ef4 | 6490 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
6491 | the same sequence as in 32bit address space. */ |
6492 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 6493 | { |
aed1a261 | 6494 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
6495 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
6496 | { | |
6497 | relax_start (offset_expr.X_add_symbol); | |
6498 | if (breg == 0) | |
6499 | { | |
6500 | macro_build (&offset_expr, s, fmt, treg, | |
6501 | BFD_RELOC_GPREL16, mips_gp_register); | |
6502 | } | |
6503 | else | |
6504 | { | |
6505 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
6506 | tempreg, breg, mips_gp_register); | |
6507 | macro_build (&offset_expr, s, fmt, treg, | |
6508 | BFD_RELOC_GPREL16, tempreg); | |
6509 | } | |
6510 | relax_switch (); | |
6511 | } | |
d6bc6245 | 6512 | |
741fe287 | 6513 | if (used_at == 0 && mips_opts.at) |
d6bc6245 | 6514 | { |
67c0d1eb RS |
6515 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
6516 | BFD_RELOC_MIPS_HIGHEST); | |
6517 | macro_build (&offset_expr, "lui", "t,u", AT, | |
6518 | BFD_RELOC_HI16_S); | |
6519 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6520 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 6521 | if (breg != 0) |
67c0d1eb RS |
6522 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
6523 | macro_build (NULL, "dsll32", "d,w,<", tempreg, tempreg, 0); | |
6524 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); | |
6525 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, | |
6526 | tempreg); | |
d6bc6245 TS |
6527 | used_at = 1; |
6528 | } | |
6529 | else | |
6530 | { | |
67c0d1eb RS |
6531 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
6532 | BFD_RELOC_MIPS_HIGHEST); | |
6533 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6534 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
6535 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); | |
6536 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6537 | tempreg, BFD_RELOC_HI16_S); | |
6538 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); | |
d6bc6245 | 6539 | if (breg != 0) |
67c0d1eb | 6540 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 6541 | tempreg, tempreg, breg); |
67c0d1eb | 6542 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6543 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 6544 | } |
6caf9ef4 TS |
6545 | |
6546 | if (mips_relax.sequence) | |
6547 | relax_end (); | |
8fc2e39e | 6548 | break; |
d6bc6245 | 6549 | } |
256ab948 | 6550 | |
252b5132 RH |
6551 | if (breg == 0) |
6552 | { | |
67c0d1eb | 6553 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 6554 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 6555 | { |
4d7206a2 | 6556 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6557 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_GPREL16, |
6558 | mips_gp_register); | |
4d7206a2 | 6559 | relax_switch (); |
252b5132 | 6560 | } |
67c0d1eb RS |
6561 | macro_build_lui (&offset_expr, tempreg); |
6562 | macro_build (&offset_expr, s, fmt, treg, | |
17a2f251 | 6563 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
6564 | if (mips_relax.sequence) |
6565 | relax_end (); | |
252b5132 RH |
6566 | } |
6567 | else | |
6568 | { | |
67c0d1eb | 6569 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 6570 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 6571 | { |
4d7206a2 | 6572 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6573 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6574 | tempreg, breg, mips_gp_register); |
67c0d1eb | 6575 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6576 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 6577 | relax_switch (); |
252b5132 | 6578 | } |
67c0d1eb RS |
6579 | macro_build_lui (&offset_expr, tempreg); |
6580 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 6581 | tempreg, tempreg, breg); |
67c0d1eb | 6582 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6583 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
6584 | if (mips_relax.sequence) |
6585 | relax_end (); | |
252b5132 RH |
6586 | } |
6587 | } | |
0a44bf69 | 6588 | else if (!mips_big_got) |
252b5132 | 6589 | { |
ed6fb7bd | 6590 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 6591 | |
252b5132 RH |
6592 | /* If this is a reference to an external symbol, we want |
6593 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6594 | nop | |
6595 | <op> $treg,0($tempreg) | |
6596 | Otherwise we want | |
6597 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6598 | nop | |
6599 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6600 | <op> $treg,0($tempreg) | |
f5040a92 AO |
6601 | |
6602 | For NewABI, we want | |
6603 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6604 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) | |
6605 | ||
252b5132 RH |
6606 | If there is a base register, we add it to $tempreg before |
6607 | the <op>. If there is a constant, we stick it in the | |
6608 | <op> instruction. We don't handle constants larger than | |
6609 | 16 bits, because we have no way to load the upper 16 bits | |
6610 | (actually, we could handle them for the subset of cases | |
6611 | in which we are not using $at). */ | |
6612 | assert (offset_expr.X_op == O_symbol); | |
f5040a92 AO |
6613 | if (HAVE_NEWABI) |
6614 | { | |
67c0d1eb RS |
6615 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6616 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 6617 | if (breg != 0) |
67c0d1eb | 6618 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6619 | tempreg, tempreg, breg); |
67c0d1eb | 6620 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6621 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
6622 | break; |
6623 | } | |
252b5132 RH |
6624 | expr1.X_add_number = offset_expr.X_add_number; |
6625 | offset_expr.X_add_number = 0; | |
6626 | if (expr1.X_add_number < -0x8000 | |
6627 | || expr1.X_add_number >= 0x8000) | |
6628 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
6629 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6630 | lw_reloc_type, mips_gp_register); | |
269137b2 | 6631 | load_delay_nop (); |
4d7206a2 RS |
6632 | relax_start (offset_expr.X_add_symbol); |
6633 | relax_switch (); | |
67c0d1eb RS |
6634 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
6635 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 6636 | relax_end (); |
252b5132 | 6637 | if (breg != 0) |
67c0d1eb | 6638 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6639 | tempreg, tempreg, breg); |
67c0d1eb | 6640 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 6641 | } |
0a44bf69 | 6642 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 6643 | { |
67c0d1eb | 6644 | int gpdelay; |
252b5132 RH |
6645 | |
6646 | /* If this is a reference to an external symbol, we want | |
6647 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6648 | addu $tempreg,$tempreg,$gp | |
6649 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6650 | <op> $treg,0($tempreg) | |
6651 | Otherwise we want | |
6652 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6653 | nop | |
6654 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6655 | <op> $treg,0($tempreg) | |
6656 | If there is a base register, we add it to $tempreg before | |
6657 | the <op>. If there is a constant, we stick it in the | |
6658 | <op> instruction. We don't handle constants larger than | |
6659 | 16 bits, because we have no way to load the upper 16 bits | |
6660 | (actually, we could handle them for the subset of cases | |
f5040a92 | 6661 | in which we are not using $at). */ |
252b5132 RH |
6662 | assert (offset_expr.X_op == O_symbol); |
6663 | expr1.X_add_number = offset_expr.X_add_number; | |
6664 | offset_expr.X_add_number = 0; | |
6665 | if (expr1.X_add_number < -0x8000 | |
6666 | || expr1.X_add_number >= 0x8000) | |
6667 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 6668 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 6669 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6670 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
17a2f251 | 6671 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
6672 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
6673 | mips_gp_register); | |
6674 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6675 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 6676 | relax_switch (); |
67c0d1eb RS |
6677 | if (gpdelay) |
6678 | macro_build (NULL, "nop", ""); | |
6679 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6680 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 6681 | load_delay_nop (); |
67c0d1eb RS |
6682 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
6683 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
6684 | relax_end (); |
6685 | ||
252b5132 | 6686 | if (breg != 0) |
67c0d1eb | 6687 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6688 | tempreg, tempreg, breg); |
67c0d1eb | 6689 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 6690 | } |
0a44bf69 | 6691 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 6692 | { |
f5040a92 AO |
6693 | /* If this is a reference to an external symbol, we want |
6694 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6695 | add $tempreg,$tempreg,$gp | |
6696 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6697 | <op> $treg,<ofst>($tempreg) | |
6698 | Otherwise, for local symbols, we want: | |
6699 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6700 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ | |
6701 | assert (offset_expr.X_op == O_symbol); | |
4d7206a2 | 6702 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
6703 | offset_expr.X_add_number = 0; |
6704 | if (expr1.X_add_number < -0x8000 | |
6705 | || expr1.X_add_number >= 0x8000) | |
6706 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 6707 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6708 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
17a2f251 | 6709 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
6710 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
6711 | mips_gp_register); | |
6712 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6713 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 6714 | if (breg != 0) |
67c0d1eb | 6715 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6716 | tempreg, tempreg, breg); |
67c0d1eb | 6717 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
684022ea | 6718 | |
4d7206a2 | 6719 | relax_switch (); |
f5040a92 | 6720 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
6721 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6722 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 6723 | if (breg != 0) |
67c0d1eb | 6724 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6725 | tempreg, tempreg, breg); |
67c0d1eb | 6726 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6727 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 6728 | relax_end (); |
f5040a92 | 6729 | } |
252b5132 RH |
6730 | else |
6731 | abort (); | |
6732 | ||
252b5132 RH |
6733 | break; |
6734 | ||
6735 | case M_LI: | |
6736 | case M_LI_S: | |
67c0d1eb | 6737 | load_register (treg, &imm_expr, 0); |
8fc2e39e | 6738 | break; |
252b5132 RH |
6739 | |
6740 | case M_DLI: | |
67c0d1eb | 6741 | load_register (treg, &imm_expr, 1); |
8fc2e39e | 6742 | break; |
252b5132 RH |
6743 | |
6744 | case M_LI_SS: | |
6745 | if (imm_expr.X_op == O_constant) | |
6746 | { | |
8fc2e39e | 6747 | used_at = 1; |
67c0d1eb RS |
6748 | load_register (AT, &imm_expr, 0); |
6749 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
6750 | break; |
6751 | } | |
6752 | else | |
6753 | { | |
6754 | assert (offset_expr.X_op == O_symbol | |
6755 | && strcmp (segment_name (S_GET_SEGMENT | |
6756 | (offset_expr.X_add_symbol)), | |
6757 | ".lit4") == 0 | |
6758 | && offset_expr.X_add_number == 0); | |
67c0d1eb | 6759 | macro_build (&offset_expr, "lwc1", "T,o(b)", treg, |
17a2f251 | 6760 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 6761 | break; |
252b5132 RH |
6762 | } |
6763 | ||
6764 | case M_LI_D: | |
ca4e0257 RS |
6765 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
6766 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
6767 | order 32 bits of the value and the low order 32 bits are either | |
6768 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
6769 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6770 | { | |
ca4e0257 | 6771 | if (HAVE_64BIT_GPRS) |
67c0d1eb | 6772 | load_register (treg, &imm_expr, 1); |
252b5132 RH |
6773 | else |
6774 | { | |
6775 | int hreg, lreg; | |
6776 | ||
6777 | if (target_big_endian) | |
6778 | { | |
6779 | hreg = treg; | |
6780 | lreg = treg + 1; | |
6781 | } | |
6782 | else | |
6783 | { | |
6784 | hreg = treg + 1; | |
6785 | lreg = treg; | |
6786 | } | |
6787 | ||
6788 | if (hreg <= 31) | |
67c0d1eb | 6789 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
6790 | if (lreg <= 31) |
6791 | { | |
6792 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 6793 | move_register (lreg, 0); |
252b5132 RH |
6794 | else |
6795 | { | |
6796 | assert (offset_expr.X_op == O_constant); | |
67c0d1eb | 6797 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
6798 | } |
6799 | } | |
6800 | } | |
8fc2e39e | 6801 | break; |
252b5132 RH |
6802 | } |
6803 | ||
6804 | /* We know that sym is in the .rdata section. First we get the | |
6805 | upper 16 bits of the address. */ | |
6806 | if (mips_pic == NO_PIC) | |
6807 | { | |
67c0d1eb | 6808 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 6809 | used_at = 1; |
252b5132 | 6810 | } |
0a44bf69 | 6811 | else |
252b5132 | 6812 | { |
67c0d1eb RS |
6813 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
6814 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 6815 | used_at = 1; |
252b5132 | 6816 | } |
bdaaa2e1 | 6817 | |
252b5132 | 6818 | /* Now we load the register(s). */ |
ca4e0257 | 6819 | if (HAVE_64BIT_GPRS) |
8fc2e39e TS |
6820 | { |
6821 | used_at = 1; | |
6822 | macro_build (&offset_expr, "ld", "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
6823 | } | |
252b5132 RH |
6824 | else |
6825 | { | |
8fc2e39e | 6826 | used_at = 1; |
67c0d1eb | 6827 | macro_build (&offset_expr, "lw", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
f9419b05 | 6828 | if (treg != RA) |
252b5132 RH |
6829 | { |
6830 | /* FIXME: How in the world do we deal with the possible | |
6831 | overflow here? */ | |
6832 | offset_expr.X_add_number += 4; | |
67c0d1eb | 6833 | macro_build (&offset_expr, "lw", "t,o(b)", |
17a2f251 | 6834 | treg + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
6835 | } |
6836 | } | |
252b5132 RH |
6837 | break; |
6838 | ||
6839 | case M_LI_DD: | |
ca4e0257 RS |
6840 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
6841 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
6842 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
6843 | the value and the low order 32 bits are either zero or in | |
6844 | OFFSET_EXPR. */ | |
252b5132 RH |
6845 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6846 | { | |
8fc2e39e | 6847 | used_at = 1; |
67c0d1eb | 6848 | load_register (AT, &imm_expr, HAVE_64BIT_FPRS); |
ca4e0257 RS |
6849 | if (HAVE_64BIT_FPRS) |
6850 | { | |
6851 | assert (HAVE_64BIT_GPRS); | |
67c0d1eb | 6852 | macro_build (NULL, "dmtc1", "t,S", AT, treg); |
ca4e0257 | 6853 | } |
252b5132 RH |
6854 | else |
6855 | { | |
67c0d1eb | 6856 | macro_build (NULL, "mtc1", "t,G", AT, treg + 1); |
252b5132 | 6857 | if (offset_expr.X_op == O_absent) |
67c0d1eb | 6858 | macro_build (NULL, "mtc1", "t,G", 0, treg); |
252b5132 RH |
6859 | else |
6860 | { | |
6861 | assert (offset_expr.X_op == O_constant); | |
67c0d1eb RS |
6862 | load_register (AT, &offset_expr, 0); |
6863 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
6864 | } |
6865 | } | |
6866 | break; | |
6867 | } | |
6868 | ||
6869 | assert (offset_expr.X_op == O_symbol | |
6870 | && offset_expr.X_add_number == 0); | |
6871 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); | |
6872 | if (strcmp (s, ".lit8") == 0) | |
6873 | { | |
e7af610e | 6874 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 | 6875 | { |
67c0d1eb | 6876 | macro_build (&offset_expr, "ldc1", "T,o(b)", treg, |
17a2f251 | 6877 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 6878 | break; |
252b5132 | 6879 | } |
c9914766 | 6880 | breg = mips_gp_register; |
252b5132 RH |
6881 | r = BFD_RELOC_MIPS_LITERAL; |
6882 | goto dob; | |
6883 | } | |
6884 | else | |
6885 | { | |
6886 | assert (strcmp (s, RDATA_SECTION_NAME) == 0); | |
8fc2e39e | 6887 | used_at = 1; |
0a44bf69 | 6888 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
6889 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
6890 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
6891 | else |
6892 | { | |
6893 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 6894 | macro_build_lui (&offset_expr, AT); |
252b5132 | 6895 | } |
bdaaa2e1 | 6896 | |
e7af610e | 6897 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 | 6898 | { |
67c0d1eb RS |
6899 | macro_build (&offset_expr, "ldc1", "T,o(b)", |
6900 | treg, BFD_RELOC_LO16, AT); | |
252b5132 RH |
6901 | break; |
6902 | } | |
6903 | breg = AT; | |
6904 | r = BFD_RELOC_LO16; | |
6905 | goto dob; | |
6906 | } | |
6907 | ||
6908 | case M_L_DOB: | |
252b5132 RH |
6909 | /* Even on a big endian machine $fn comes before $fn+1. We have |
6910 | to adjust when loading from memory. */ | |
6911 | r = BFD_RELOC_LO16; | |
6912 | dob: | |
e7af610e | 6913 | assert (mips_opts.isa == ISA_MIPS1); |
67c0d1eb | 6914 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 6915 | target_big_endian ? treg + 1 : treg, r, breg); |
252b5132 RH |
6916 | /* FIXME: A possible overflow which I don't know how to deal |
6917 | with. */ | |
6918 | offset_expr.X_add_number += 4; | |
67c0d1eb | 6919 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 6920 | target_big_endian ? treg : treg + 1, r, breg); |
252b5132 RH |
6921 | break; |
6922 | ||
6923 | case M_L_DAB: | |
6924 | /* | |
6925 | * The MIPS assembler seems to check for X_add_number not | |
6926 | * being double aligned and generating: | |
6927 | * lui at,%hi(foo+1) | |
6928 | * addu at,at,v1 | |
6929 | * addiu at,at,%lo(foo+1) | |
6930 | * lwc1 f2,0(at) | |
6931 | * lwc1 f3,4(at) | |
6932 | * But, the resulting address is the same after relocation so why | |
6933 | * generate the extra instruction? | |
6934 | */ | |
bdaaa2e1 | 6935 | /* Itbl support may require additional care here. */ |
252b5132 | 6936 | coproc = 1; |
e7af610e | 6937 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6938 | { |
6939 | s = "ldc1"; | |
6940 | goto ld; | |
6941 | } | |
6942 | ||
6943 | s = "lwc1"; | |
6944 | fmt = "T,o(b)"; | |
6945 | goto ldd_std; | |
6946 | ||
6947 | case M_S_DAB: | |
e7af610e | 6948 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6949 | { |
6950 | s = "sdc1"; | |
6951 | goto st; | |
6952 | } | |
6953 | ||
6954 | s = "swc1"; | |
6955 | fmt = "T,o(b)"; | |
bdaaa2e1 | 6956 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6957 | coproc = 1; |
6958 | goto ldd_std; | |
6959 | ||
6960 | case M_LD_AB: | |
ca4e0257 | 6961 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6962 | { |
6963 | s = "ld"; | |
6964 | goto ld; | |
6965 | } | |
6966 | ||
6967 | s = "lw"; | |
6968 | fmt = "t,o(b)"; | |
6969 | goto ldd_std; | |
6970 | ||
6971 | case M_SD_AB: | |
ca4e0257 | 6972 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6973 | { |
6974 | s = "sd"; | |
6975 | goto st; | |
6976 | } | |
6977 | ||
6978 | s = "sw"; | |
6979 | fmt = "t,o(b)"; | |
6980 | ||
6981 | ldd_std: | |
6982 | if (offset_expr.X_op != O_symbol | |
6983 | && offset_expr.X_op != O_constant) | |
6984 | { | |
6985 | as_bad (_("expression too complex")); | |
6986 | offset_expr.X_op = O_constant; | |
6987 | } | |
6988 | ||
2051e8c4 MR |
6989 | if (HAVE_32BIT_ADDRESSES |
6990 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
6991 | { |
6992 | char value [32]; | |
6993 | ||
6994 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 6995 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 6996 | } |
2051e8c4 | 6997 | |
252b5132 RH |
6998 | /* Even on a big endian machine $fn comes before $fn+1. We have |
6999 | to adjust when loading from memory. We set coproc if we must | |
7000 | load $fn+1 first. */ | |
bdaaa2e1 | 7001 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7002 | if (! target_big_endian) |
7003 | coproc = 0; | |
7004 | ||
7005 | if (mips_pic == NO_PIC | |
7006 | || offset_expr.X_op == O_constant) | |
7007 | { | |
7008 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 TS |
7009 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
7010 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
7011 | If we have a base register, we use this |
7012 | addu $at,$breg,$gp | |
cdf6fd85 TS |
7013 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
7014 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
7015 | If this is not a GP relative symbol, we want |
7016 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
7017 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7018 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7019 | If there is a base register, we add it to $at after the | |
7020 | lui instruction. If there is a constant, we always use | |
7021 | the last case. */ | |
39a59cf8 MR |
7022 | if (offset_expr.X_op == O_symbol |
7023 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 7024 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 7025 | { |
4d7206a2 | 7026 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
7027 | if (breg == 0) |
7028 | { | |
c9914766 | 7029 | tempreg = mips_gp_register; |
252b5132 RH |
7030 | } |
7031 | else | |
7032 | { | |
67c0d1eb | 7033 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7034 | AT, breg, mips_gp_register); |
252b5132 | 7035 | tempreg = AT; |
252b5132 RH |
7036 | used_at = 1; |
7037 | } | |
7038 | ||
beae10d5 | 7039 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7040 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 7041 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
7042 | offset_expr.X_add_number += 4; |
7043 | ||
7044 | /* Set mips_optimize to 2 to avoid inserting an | |
7045 | undesired nop. */ | |
7046 | hold_mips_optimize = mips_optimize; | |
7047 | mips_optimize = 2; | |
beae10d5 | 7048 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7049 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 7050 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
7051 | mips_optimize = hold_mips_optimize; |
7052 | ||
4d7206a2 | 7053 | relax_switch (); |
252b5132 RH |
7054 | |
7055 | /* We just generated two relocs. When tc_gen_reloc | |
7056 | handles this case, it will skip the first reloc and | |
7057 | handle the second. The second reloc already has an | |
7058 | extra addend of 4, which we added above. We must | |
7059 | subtract it out, and then subtract another 4 to make | |
7060 | the first reloc come out right. The second reloc | |
7061 | will come out right because we are going to add 4 to | |
7062 | offset_expr when we build its instruction below. | |
7063 | ||
7064 | If we have a symbol, then we don't want to include | |
7065 | the offset, because it will wind up being included | |
7066 | when we generate the reloc. */ | |
7067 | ||
7068 | if (offset_expr.X_op == O_constant) | |
7069 | offset_expr.X_add_number -= 8; | |
7070 | else | |
7071 | { | |
7072 | offset_expr.X_add_number = -4; | |
7073 | offset_expr.X_op = O_constant; | |
7074 | } | |
7075 | } | |
8fc2e39e | 7076 | used_at = 1; |
67c0d1eb | 7077 | macro_build_lui (&offset_expr, AT); |
252b5132 | 7078 | if (breg != 0) |
67c0d1eb | 7079 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 7080 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7081 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 7082 | BFD_RELOC_LO16, AT); |
252b5132 RH |
7083 | /* FIXME: How do we handle overflow here? */ |
7084 | offset_expr.X_add_number += 4; | |
beae10d5 | 7085 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7086 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 7087 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
7088 | if (mips_relax.sequence) |
7089 | relax_end (); | |
bdaaa2e1 | 7090 | } |
0a44bf69 | 7091 | else if (!mips_big_got) |
252b5132 | 7092 | { |
252b5132 RH |
7093 | /* If this is a reference to an external symbol, we want |
7094 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7095 | nop | |
7096 | <op> $treg,0($at) | |
7097 | <op> $treg+1,4($at) | |
7098 | Otherwise we want | |
7099 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7100 | nop | |
7101 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7102 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7103 | If there is a base register we add it to $at before the | |
7104 | lwc1 instructions. If there is a constant we include it | |
7105 | in the lwc1 instructions. */ | |
7106 | used_at = 1; | |
7107 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
7108 | if (expr1.X_add_number < -0x8000 |
7109 | || expr1.X_add_number >= 0x8000 - 4) | |
7110 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 7111 | load_got_offset (AT, &offset_expr); |
269137b2 | 7112 | load_delay_nop (); |
252b5132 | 7113 | if (breg != 0) |
67c0d1eb | 7114 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
7115 | |
7116 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7117 | nop. */ | |
7118 | hold_mips_optimize = mips_optimize; | |
7119 | mips_optimize = 2; | |
4d7206a2 | 7120 | |
beae10d5 | 7121 | /* Itbl support may require additional care here. */ |
4d7206a2 | 7122 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7123 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
7124 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7125 | expr1.X_add_number += 4; |
67c0d1eb RS |
7126 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
7127 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7128 | relax_switch (); |
67c0d1eb RS |
7129 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
7130 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7131 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
7132 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
7133 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7134 | relax_end (); |
252b5132 | 7135 | |
4d7206a2 | 7136 | mips_optimize = hold_mips_optimize; |
252b5132 | 7137 | } |
0a44bf69 | 7138 | else if (mips_big_got) |
252b5132 | 7139 | { |
67c0d1eb | 7140 | int gpdelay; |
252b5132 RH |
7141 | |
7142 | /* If this is a reference to an external symbol, we want | |
7143 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7144 | addu $at,$at,$gp | |
7145 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
7146 | nop | |
7147 | <op> $treg,0($at) | |
7148 | <op> $treg+1,4($at) | |
7149 | Otherwise we want | |
7150 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7151 | nop | |
7152 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7153 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7154 | If there is a base register we add it to $at before the | |
7155 | lwc1 instructions. If there is a constant we include it | |
7156 | in the lwc1 instructions. */ | |
7157 | used_at = 1; | |
7158 | expr1.X_add_number = offset_expr.X_add_number; | |
7159 | offset_expr.X_add_number = 0; | |
7160 | if (expr1.X_add_number < -0x8000 | |
7161 | || expr1.X_add_number >= 0x8000 - 4) | |
7162 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 7163 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 7164 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7165 | macro_build (&offset_expr, "lui", "t,u", |
7166 | AT, BFD_RELOC_MIPS_GOT_HI16); | |
7167 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 7168 | AT, AT, mips_gp_register); |
67c0d1eb | 7169 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 7170 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 7171 | load_delay_nop (); |
252b5132 | 7172 | if (breg != 0) |
67c0d1eb | 7173 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 7174 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7175 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 7176 | BFD_RELOC_LO16, AT); |
252b5132 RH |
7177 | expr1.X_add_number += 4; |
7178 | ||
7179 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7180 | nop. */ | |
7181 | hold_mips_optimize = mips_optimize; | |
7182 | mips_optimize = 2; | |
beae10d5 | 7183 | /* Itbl support may require additional care here. */ |
67c0d1eb | 7184 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 7185 | BFD_RELOC_LO16, AT); |
252b5132 RH |
7186 | mips_optimize = hold_mips_optimize; |
7187 | expr1.X_add_number -= 4; | |
7188 | ||
4d7206a2 RS |
7189 | relax_switch (); |
7190 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
7191 | if (gpdelay) |
7192 | macro_build (NULL, "nop", ""); | |
7193 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
7194 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 7195 | load_delay_nop (); |
252b5132 | 7196 | if (breg != 0) |
67c0d1eb | 7197 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 7198 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
7199 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
7200 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 7201 | offset_expr.X_add_number += 4; |
252b5132 RH |
7202 | |
7203 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7204 | nop. */ | |
7205 | hold_mips_optimize = mips_optimize; | |
7206 | mips_optimize = 2; | |
beae10d5 | 7207 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
7208 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
7209 | BFD_RELOC_LO16, AT); | |
252b5132 | 7210 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 7211 | relax_end (); |
252b5132 | 7212 | } |
252b5132 RH |
7213 | else |
7214 | abort (); | |
7215 | ||
252b5132 RH |
7216 | break; |
7217 | ||
7218 | case M_LD_OB: | |
7219 | s = "lw"; | |
7220 | goto sd_ob; | |
7221 | case M_SD_OB: | |
7222 | s = "sw"; | |
7223 | sd_ob: | |
ca4e0257 | 7224 | assert (HAVE_32BIT_ADDRESSES); |
67c0d1eb | 7225 | macro_build (&offset_expr, s, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
252b5132 | 7226 | offset_expr.X_add_number += 4; |
67c0d1eb | 7227 | macro_build (&offset_expr, s, "t,o(b)", treg + 1, BFD_RELOC_LO16, breg); |
8fc2e39e | 7228 | break; |
252b5132 RH |
7229 | |
7230 | /* New code added to support COPZ instructions. | |
7231 | This code builds table entries out of the macros in mip_opcodes. | |
7232 | R4000 uses interlocks to handle coproc delays. | |
7233 | Other chips (like the R3000) require nops to be inserted for delays. | |
7234 | ||
f72c8c98 | 7235 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
7236 | In order to fill delay slots for non-interlocked chips, |
7237 | we must have a way to specify delays based on the coprocessor. | |
7238 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
7239 | What are the side-effects of the cop instruction? | |
7240 | What cache support might we have and what are its effects? | |
7241 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 7242 | What registers are read/set/modified? |
252b5132 RH |
7243 | |
7244 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 7245 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
7246 | |
7247 | case M_COP0: | |
7248 | s = "c0"; | |
7249 | goto copz; | |
7250 | case M_COP1: | |
7251 | s = "c1"; | |
7252 | goto copz; | |
7253 | case M_COP2: | |
7254 | s = "c2"; | |
7255 | goto copz; | |
7256 | case M_COP3: | |
7257 | s = "c3"; | |
7258 | copz: | |
b19e8a9b AN |
7259 | if (NO_ISA_COP (mips_opts.arch) |
7260 | && (ip->insn_mo->pinfo2 & INSN2_M_FP_S) == 0) | |
7261 | { | |
7262 | as_bad (_("opcode not supported on this processor: %s"), | |
7263 | mips_cpu_info_from_arch (mips_opts.arch)->name); | |
7264 | break; | |
7265 | } | |
7266 | ||
252b5132 RH |
7267 | /* For now we just do C (same as Cz). The parameter will be |
7268 | stored in insn_opcode by mips_ip. */ | |
67c0d1eb | 7269 | macro_build (NULL, s, "C", ip->insn_opcode); |
8fc2e39e | 7270 | break; |
252b5132 | 7271 | |
ea1fb5dc | 7272 | case M_MOVE: |
67c0d1eb | 7273 | move_register (dreg, sreg); |
8fc2e39e | 7274 | break; |
ea1fb5dc | 7275 | |
252b5132 RH |
7276 | #ifdef LOSING_COMPILER |
7277 | default: | |
7278 | /* Try and see if this is a new itbl instruction. | |
7279 | This code builds table entries out of the macros in mip_opcodes. | |
7280 | FIXME: For now we just assemble the expression and pass it's | |
7281 | value along as a 32-bit immediate. | |
bdaaa2e1 | 7282 | We may want to have the assembler assemble this value, |
252b5132 RH |
7283 | so that we gain the assembler's knowledge of delay slots, |
7284 | symbols, etc. | |
7285 | Would it be more efficient to use mask (id) here? */ | |
bdaaa2e1 | 7286 | if (itbl_have_entries |
252b5132 | 7287 | && (immed_expr = itbl_assemble (ip->insn_mo->name, ""))) |
beae10d5 | 7288 | { |
252b5132 RH |
7289 | s = ip->insn_mo->name; |
7290 | s2 = "cop3"; | |
7291 | coproc = ITBL_DECODE_PNUM (immed_expr);; | |
67c0d1eb | 7292 | macro_build (&immed_expr, s, "C"); |
8fc2e39e | 7293 | break; |
beae10d5 | 7294 | } |
252b5132 | 7295 | macro2 (ip); |
8fc2e39e | 7296 | break; |
252b5132 | 7297 | } |
741fe287 | 7298 | if (!mips_opts.at && used_at) |
8fc2e39e | 7299 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 | 7300 | } |
bdaaa2e1 | 7301 | |
252b5132 | 7302 | static void |
17a2f251 | 7303 | macro2 (struct mips_cl_insn *ip) |
252b5132 | 7304 | { |
741fe287 MR |
7305 | unsigned int treg, sreg, dreg, breg; |
7306 | unsigned int tempreg; | |
252b5132 | 7307 | int mask; |
252b5132 RH |
7308 | int used_at; |
7309 | expressionS expr1; | |
7310 | const char *s; | |
7311 | const char *s2; | |
7312 | const char *fmt; | |
7313 | int likely = 0; | |
7314 | int dbl = 0; | |
7315 | int coproc = 0; | |
7316 | int lr = 0; | |
7317 | int imm = 0; | |
7318 | int off; | |
7319 | offsetT maxnum; | |
7320 | bfd_reloc_code_real_type r; | |
bdaaa2e1 | 7321 | |
252b5132 RH |
7322 | treg = (ip->insn_opcode >> 16) & 0x1f; |
7323 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
7324 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
7325 | mask = ip->insn_mo->mask; | |
bdaaa2e1 | 7326 | |
252b5132 RH |
7327 | expr1.X_op = O_constant; |
7328 | expr1.X_op_symbol = NULL; | |
7329 | expr1.X_add_symbol = NULL; | |
7330 | expr1.X_add_number = 1; | |
bdaaa2e1 | 7331 | |
252b5132 RH |
7332 | switch (mask) |
7333 | { | |
7334 | #endif /* LOSING_COMPILER */ | |
7335 | ||
7336 | case M_DMUL: | |
7337 | dbl = 1; | |
7338 | case M_MUL: | |
67c0d1eb RS |
7339 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", sreg, treg); |
7340 | macro_build (NULL, "mflo", "d", dreg); | |
8fc2e39e | 7341 | break; |
252b5132 RH |
7342 | |
7343 | case M_DMUL_I: | |
7344 | dbl = 1; | |
7345 | case M_MUL_I: | |
7346 | /* The MIPS assembler some times generates shifts and adds. I'm | |
7347 | not trying to be that fancy. GCC should do this for us | |
7348 | anyway. */ | |
8fc2e39e | 7349 | used_at = 1; |
67c0d1eb RS |
7350 | load_register (AT, &imm_expr, dbl); |
7351 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, AT); | |
7352 | macro_build (NULL, "mflo", "d", dreg); | |
252b5132 RH |
7353 | break; |
7354 | ||
7355 | case M_DMULO_I: | |
7356 | dbl = 1; | |
7357 | case M_MULO_I: | |
7358 | imm = 1; | |
7359 | goto do_mulo; | |
7360 | ||
7361 | case M_DMULO: | |
7362 | dbl = 1; | |
7363 | case M_MULO: | |
7364 | do_mulo: | |
7d10b47d | 7365 | start_noreorder (); |
8fc2e39e | 7366 | used_at = 1; |
252b5132 | 7367 | if (imm) |
67c0d1eb RS |
7368 | load_register (AT, &imm_expr, dbl); |
7369 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); | |
7370 | macro_build (NULL, "mflo", "d", dreg); | |
7371 | macro_build (NULL, dbl ? "dsra32" : "sra", "d,w,<", dreg, dreg, RA); | |
7372 | macro_build (NULL, "mfhi", "d", AT); | |
252b5132 | 7373 | if (mips_trap) |
67c0d1eb | 7374 | macro_build (NULL, "tne", "s,t,q", dreg, AT, 6); |
252b5132 RH |
7375 | else |
7376 | { | |
7377 | expr1.X_add_number = 8; | |
67c0d1eb RS |
7378 | macro_build (&expr1, "beq", "s,t,p", dreg, AT); |
7379 | macro_build (NULL, "nop", "", 0); | |
7380 | macro_build (NULL, "break", "c", 6); | |
252b5132 | 7381 | } |
7d10b47d | 7382 | end_noreorder (); |
67c0d1eb | 7383 | macro_build (NULL, "mflo", "d", dreg); |
252b5132 RH |
7384 | break; |
7385 | ||
7386 | case M_DMULOU_I: | |
7387 | dbl = 1; | |
7388 | case M_MULOU_I: | |
7389 | imm = 1; | |
7390 | goto do_mulou; | |
7391 | ||
7392 | case M_DMULOU: | |
7393 | dbl = 1; | |
7394 | case M_MULOU: | |
7395 | do_mulou: | |
7d10b47d | 7396 | start_noreorder (); |
8fc2e39e | 7397 | used_at = 1; |
252b5132 | 7398 | if (imm) |
67c0d1eb RS |
7399 | load_register (AT, &imm_expr, dbl); |
7400 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
17a2f251 | 7401 | sreg, imm ? AT : treg); |
67c0d1eb RS |
7402 | macro_build (NULL, "mfhi", "d", AT); |
7403 | macro_build (NULL, "mflo", "d", dreg); | |
252b5132 | 7404 | if (mips_trap) |
67c0d1eb | 7405 | macro_build (NULL, "tne", "s,t,q", AT, 0, 6); |
252b5132 RH |
7406 | else |
7407 | { | |
7408 | expr1.X_add_number = 8; | |
67c0d1eb RS |
7409 | macro_build (&expr1, "beq", "s,t,p", AT, 0); |
7410 | macro_build (NULL, "nop", "", 0); | |
7411 | macro_build (NULL, "break", "c", 6); | |
252b5132 | 7412 | } |
7d10b47d | 7413 | end_noreorder (); |
252b5132 RH |
7414 | break; |
7415 | ||
771c7ce4 | 7416 | case M_DROL: |
fef14a42 | 7417 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
7418 | { |
7419 | if (dreg == sreg) | |
7420 | { | |
7421 | tempreg = AT; | |
7422 | used_at = 1; | |
7423 | } | |
7424 | else | |
7425 | { | |
7426 | tempreg = dreg; | |
82dd0097 | 7427 | } |
67c0d1eb RS |
7428 | macro_build (NULL, "dnegu", "d,w", tempreg, treg); |
7429 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 7430 | break; |
82dd0097 | 7431 | } |
8fc2e39e | 7432 | used_at = 1; |
67c0d1eb RS |
7433 | macro_build (NULL, "dsubu", "d,v,t", AT, 0, treg); |
7434 | macro_build (NULL, "dsrlv", "d,t,s", AT, sreg, AT); | |
7435 | macro_build (NULL, "dsllv", "d,t,s", dreg, sreg, treg); | |
7436 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7437 | break; |
7438 | ||
252b5132 | 7439 | case M_ROL: |
fef14a42 | 7440 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 CD |
7441 | { |
7442 | if (dreg == sreg) | |
7443 | { | |
7444 | tempreg = AT; | |
7445 | used_at = 1; | |
7446 | } | |
7447 | else | |
7448 | { | |
7449 | tempreg = dreg; | |
82dd0097 | 7450 | } |
67c0d1eb RS |
7451 | macro_build (NULL, "negu", "d,w", tempreg, treg); |
7452 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 7453 | break; |
82dd0097 | 7454 | } |
8fc2e39e | 7455 | used_at = 1; |
67c0d1eb RS |
7456 | macro_build (NULL, "subu", "d,v,t", AT, 0, treg); |
7457 | macro_build (NULL, "srlv", "d,t,s", AT, sreg, AT); | |
7458 | macro_build (NULL, "sllv", "d,t,s", dreg, sreg, treg); | |
7459 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7460 | break; |
7461 | ||
771c7ce4 TS |
7462 | case M_DROL_I: |
7463 | { | |
7464 | unsigned int rot; | |
82dd0097 | 7465 | char *l, *r; |
771c7ce4 TS |
7466 | |
7467 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7468 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7469 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 7470 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
7471 | { |
7472 | rot = (64 - rot) & 0x3f; | |
7473 | if (rot >= 32) | |
67c0d1eb | 7474 | macro_build (NULL, "dror32", "d,w,<", dreg, sreg, rot - 32); |
60b63b72 | 7475 | else |
67c0d1eb | 7476 | macro_build (NULL, "dror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7477 | break; |
60b63b72 | 7478 | } |
483fc7cd | 7479 | if (rot == 0) |
483fc7cd | 7480 | { |
67c0d1eb | 7481 | macro_build (NULL, "dsrl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7482 | break; |
483fc7cd | 7483 | } |
82dd0097 CD |
7484 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
7485 | r = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; | |
7486 | rot &= 0x1f; | |
8fc2e39e | 7487 | used_at = 1; |
67c0d1eb RS |
7488 | macro_build (NULL, l, "d,w,<", AT, sreg, rot); |
7489 | macro_build (NULL, r, "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7490 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7491 | } |
7492 | break; | |
7493 | ||
252b5132 | 7494 | case M_ROL_I: |
771c7ce4 TS |
7495 | { |
7496 | unsigned int rot; | |
7497 | ||
7498 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7499 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7500 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 7501 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 7502 | { |
67c0d1eb | 7503 | macro_build (NULL, "ror", "d,w,<", dreg, sreg, (32 - rot) & 0x1f); |
8fc2e39e | 7504 | break; |
60b63b72 | 7505 | } |
483fc7cd | 7506 | if (rot == 0) |
483fc7cd | 7507 | { |
67c0d1eb | 7508 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7509 | break; |
483fc7cd | 7510 | } |
8fc2e39e | 7511 | used_at = 1; |
67c0d1eb RS |
7512 | macro_build (NULL, "sll", "d,w,<", AT, sreg, rot); |
7513 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7514 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7515 | } |
7516 | break; | |
7517 | ||
7518 | case M_DROR: | |
fef14a42 | 7519 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 7520 | { |
67c0d1eb | 7521 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 7522 | break; |
82dd0097 | 7523 | } |
8fc2e39e | 7524 | used_at = 1; |
67c0d1eb RS |
7525 | macro_build (NULL, "dsubu", "d,v,t", AT, 0, treg); |
7526 | macro_build (NULL, "dsllv", "d,t,s", AT, sreg, AT); | |
7527 | macro_build (NULL, "dsrlv", "d,t,s", dreg, sreg, treg); | |
7528 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7529 | break; |
7530 | ||
7531 | case M_ROR: | |
fef14a42 | 7532 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 7533 | { |
67c0d1eb | 7534 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 7535 | break; |
82dd0097 | 7536 | } |
8fc2e39e | 7537 | used_at = 1; |
67c0d1eb RS |
7538 | macro_build (NULL, "subu", "d,v,t", AT, 0, treg); |
7539 | macro_build (NULL, "sllv", "d,t,s", AT, sreg, AT); | |
7540 | macro_build (NULL, "srlv", "d,t,s", dreg, sreg, treg); | |
7541 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7542 | break; |
7543 | ||
771c7ce4 TS |
7544 | case M_DROR_I: |
7545 | { | |
7546 | unsigned int rot; | |
82dd0097 | 7547 | char *l, *r; |
771c7ce4 TS |
7548 | |
7549 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7550 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7551 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 7552 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
7553 | { |
7554 | if (rot >= 32) | |
67c0d1eb | 7555 | macro_build (NULL, "dror32", "d,w,<", dreg, sreg, rot - 32); |
82dd0097 | 7556 | else |
67c0d1eb | 7557 | macro_build (NULL, "dror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7558 | break; |
82dd0097 | 7559 | } |
483fc7cd | 7560 | if (rot == 0) |
483fc7cd | 7561 | { |
67c0d1eb | 7562 | macro_build (NULL, "dsrl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7563 | break; |
483fc7cd | 7564 | } |
82dd0097 CD |
7565 | r = (rot < 0x20) ? "dsrl" : "dsrl32"; |
7566 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; | |
7567 | rot &= 0x1f; | |
8fc2e39e | 7568 | used_at = 1; |
67c0d1eb RS |
7569 | macro_build (NULL, r, "d,w,<", AT, sreg, rot); |
7570 | macro_build (NULL, l, "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7571 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7572 | } |
7573 | break; | |
7574 | ||
252b5132 | 7575 | case M_ROR_I: |
771c7ce4 TS |
7576 | { |
7577 | unsigned int rot; | |
7578 | ||
7579 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7580 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7581 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 7582 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 7583 | { |
67c0d1eb | 7584 | macro_build (NULL, "ror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7585 | break; |
82dd0097 | 7586 | } |
483fc7cd | 7587 | if (rot == 0) |
483fc7cd | 7588 | { |
67c0d1eb | 7589 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7590 | break; |
483fc7cd | 7591 | } |
8fc2e39e | 7592 | used_at = 1; |
67c0d1eb RS |
7593 | macro_build (NULL, "srl", "d,w,<", AT, sreg, rot); |
7594 | macro_build (NULL, "sll", "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7595 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 | 7596 | } |
252b5132 RH |
7597 | break; |
7598 | ||
7599 | case M_S_DOB: | |
e7af610e | 7600 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
7601 | /* Even on a big endian machine $fn comes before $fn+1. We have |
7602 | to adjust when storing to memory. */ | |
67c0d1eb RS |
7603 | macro_build (&offset_expr, "swc1", "T,o(b)", |
7604 | target_big_endian ? treg + 1 : treg, BFD_RELOC_LO16, breg); | |
252b5132 | 7605 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
7606 | macro_build (&offset_expr, "swc1", "T,o(b)", |
7607 | target_big_endian ? treg : treg + 1, BFD_RELOC_LO16, breg); | |
8fc2e39e | 7608 | break; |
252b5132 RH |
7609 | |
7610 | case M_SEQ: | |
7611 | if (sreg == 0) | |
67c0d1eb | 7612 | macro_build (&expr1, "sltiu", "t,r,j", dreg, treg, BFD_RELOC_LO16); |
252b5132 | 7613 | else if (treg == 0) |
67c0d1eb | 7614 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7615 | else |
7616 | { | |
67c0d1eb RS |
7617 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
7618 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 | 7619 | } |
8fc2e39e | 7620 | break; |
252b5132 RH |
7621 | |
7622 | case M_SEQ_I: | |
7623 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7624 | { | |
67c0d1eb | 7625 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7626 | break; |
252b5132 RH |
7627 | } |
7628 | if (sreg == 0) | |
7629 | { | |
7630 | as_warn (_("Instruction %s: result is always false"), | |
7631 | ip->insn_mo->name); | |
67c0d1eb | 7632 | move_register (dreg, 0); |
8fc2e39e | 7633 | break; |
252b5132 | 7634 | } |
dd3cbb7e NC |
7635 | if (CPU_HAS_SEQ (mips_opts.arch) |
7636 | && -512 <= imm_expr.X_add_number | |
7637 | && imm_expr.X_add_number < 512) | |
7638 | { | |
7639 | macro_build (NULL, "seqi", "t,r,+Q", dreg, sreg, | |
7640 | imm_expr.X_add_number); | |
7641 | break; | |
7642 | } | |
252b5132 RH |
7643 | if (imm_expr.X_op == O_constant |
7644 | && imm_expr.X_add_number >= 0 | |
7645 | && imm_expr.X_add_number < 0x10000) | |
7646 | { | |
67c0d1eb | 7647 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7648 | } |
7649 | else if (imm_expr.X_op == O_constant | |
7650 | && imm_expr.X_add_number > -0x8000 | |
7651 | && imm_expr.X_add_number < 0) | |
7652 | { | |
7653 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7654 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 7655 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 7656 | } |
dd3cbb7e NC |
7657 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
7658 | { | |
7659 | used_at = 1; | |
7660 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
7661 | macro_build (NULL, "seq", "d,v,t", dreg, sreg, AT); | |
7662 | break; | |
7663 | } | |
252b5132 RH |
7664 | else |
7665 | { | |
67c0d1eb RS |
7666 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7667 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7668 | used_at = 1; |
7669 | } | |
67c0d1eb | 7670 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 7671 | break; |
252b5132 RH |
7672 | |
7673 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
7674 | s = "slt"; | |
7675 | goto sge; | |
7676 | case M_SGEU: | |
7677 | s = "sltu"; | |
7678 | sge: | |
67c0d1eb RS |
7679 | macro_build (NULL, s, "d,v,t", dreg, sreg, treg); |
7680 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 7681 | break; |
252b5132 RH |
7682 | |
7683 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
7684 | case M_SGEU_I: | |
7685 | if (imm_expr.X_op == O_constant | |
7686 | && imm_expr.X_add_number >= -0x8000 | |
7687 | && imm_expr.X_add_number < 0x8000) | |
7688 | { | |
67c0d1eb RS |
7689 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
7690 | dreg, sreg, BFD_RELOC_LO16); | |
252b5132 RH |
7691 | } |
7692 | else | |
7693 | { | |
67c0d1eb RS |
7694 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7695 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", | |
7696 | dreg, sreg, AT); | |
252b5132 RH |
7697 | used_at = 1; |
7698 | } | |
67c0d1eb | 7699 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 7700 | break; |
252b5132 RH |
7701 | |
7702 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
7703 | s = "slt"; | |
7704 | goto sgt; | |
7705 | case M_SGTU: | |
7706 | s = "sltu"; | |
7707 | sgt: | |
67c0d1eb | 7708 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
8fc2e39e | 7709 | break; |
252b5132 RH |
7710 | |
7711 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
7712 | s = "slt"; | |
7713 | goto sgti; | |
7714 | case M_SGTU_I: | |
7715 | s = "sltu"; | |
7716 | sgti: | |
8fc2e39e | 7717 | used_at = 1; |
67c0d1eb RS |
7718 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7719 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
252b5132 RH |
7720 | break; |
7721 | ||
2396cfb9 | 7722 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
7723 | s = "slt"; |
7724 | goto sle; | |
7725 | case M_SLEU: | |
7726 | s = "sltu"; | |
7727 | sle: | |
67c0d1eb RS |
7728 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
7729 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 7730 | break; |
252b5132 | 7731 | |
2396cfb9 | 7732 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
7733 | s = "slt"; |
7734 | goto slei; | |
7735 | case M_SLEU_I: | |
7736 | s = "sltu"; | |
7737 | slei: | |
8fc2e39e | 7738 | used_at = 1; |
67c0d1eb RS |
7739 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7740 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
7741 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 RH |
7742 | break; |
7743 | ||
7744 | case M_SLT_I: | |
7745 | if (imm_expr.X_op == O_constant | |
7746 | && imm_expr.X_add_number >= -0x8000 | |
7747 | && imm_expr.X_add_number < 0x8000) | |
7748 | { | |
67c0d1eb | 7749 | macro_build (&imm_expr, "slti", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7750 | break; |
252b5132 | 7751 | } |
8fc2e39e | 7752 | used_at = 1; |
67c0d1eb RS |
7753 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7754 | macro_build (NULL, "slt", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7755 | break; |
7756 | ||
7757 | case M_SLTU_I: | |
7758 | if (imm_expr.X_op == O_constant | |
7759 | && imm_expr.X_add_number >= -0x8000 | |
7760 | && imm_expr.X_add_number < 0x8000) | |
7761 | { | |
67c0d1eb | 7762 | macro_build (&imm_expr, "sltiu", "t,r,j", dreg, sreg, |
17a2f251 | 7763 | BFD_RELOC_LO16); |
8fc2e39e | 7764 | break; |
252b5132 | 7765 | } |
8fc2e39e | 7766 | used_at = 1; |
67c0d1eb RS |
7767 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7768 | macro_build (NULL, "sltu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7769 | break; |
7770 | ||
7771 | case M_SNE: | |
7772 | if (sreg == 0) | |
67c0d1eb | 7773 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, treg); |
252b5132 | 7774 | else if (treg == 0) |
67c0d1eb | 7775 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
7776 | else |
7777 | { | |
67c0d1eb RS |
7778 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
7779 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); | |
252b5132 | 7780 | } |
8fc2e39e | 7781 | break; |
252b5132 RH |
7782 | |
7783 | case M_SNE_I: | |
7784 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7785 | { | |
67c0d1eb | 7786 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
8fc2e39e | 7787 | break; |
252b5132 RH |
7788 | } |
7789 | if (sreg == 0) | |
7790 | { | |
7791 | as_warn (_("Instruction %s: result is always true"), | |
7792 | ip->insn_mo->name); | |
67c0d1eb RS |
7793 | macro_build (&expr1, HAVE_32BIT_GPRS ? "addiu" : "daddiu", "t,r,j", |
7794 | dreg, 0, BFD_RELOC_LO16); | |
8fc2e39e | 7795 | break; |
252b5132 | 7796 | } |
dd3cbb7e NC |
7797 | if (CPU_HAS_SEQ (mips_opts.arch) |
7798 | && -512 <= imm_expr.X_add_number | |
7799 | && imm_expr.X_add_number < 512) | |
7800 | { | |
7801 | macro_build (NULL, "snei", "t,r,+Q", dreg, sreg, | |
7802 | imm_expr.X_add_number); | |
7803 | break; | |
7804 | } | |
252b5132 RH |
7805 | if (imm_expr.X_op == O_constant |
7806 | && imm_expr.X_add_number >= 0 | |
7807 | && imm_expr.X_add_number < 0x10000) | |
7808 | { | |
67c0d1eb | 7809 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7810 | } |
7811 | else if (imm_expr.X_op == O_constant | |
7812 | && imm_expr.X_add_number > -0x8000 | |
7813 | && imm_expr.X_add_number < 0) | |
7814 | { | |
7815 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7816 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 7817 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 7818 | } |
dd3cbb7e NC |
7819 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
7820 | { | |
7821 | used_at = 1; | |
7822 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
7823 | macro_build (NULL, "sne", "d,v,t", dreg, sreg, AT); | |
7824 | break; | |
7825 | } | |
252b5132 RH |
7826 | else |
7827 | { | |
67c0d1eb RS |
7828 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7829 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7830 | used_at = 1; |
7831 | } | |
67c0d1eb | 7832 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); |
8fc2e39e | 7833 | break; |
252b5132 RH |
7834 | |
7835 | case M_DSUB_I: | |
7836 | dbl = 1; | |
7837 | case M_SUB_I: | |
7838 | if (imm_expr.X_op == O_constant | |
7839 | && imm_expr.X_add_number > -0x8000 | |
7840 | && imm_expr.X_add_number <= 0x8000) | |
7841 | { | |
7842 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb RS |
7843 | macro_build (&imm_expr, dbl ? "daddi" : "addi", "t,r,j", |
7844 | dreg, sreg, BFD_RELOC_LO16); | |
8fc2e39e | 7845 | break; |
252b5132 | 7846 | } |
8fc2e39e | 7847 | used_at = 1; |
67c0d1eb RS |
7848 | load_register (AT, &imm_expr, dbl); |
7849 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7850 | break; |
7851 | ||
7852 | case M_DSUBU_I: | |
7853 | dbl = 1; | |
7854 | case M_SUBU_I: | |
7855 | if (imm_expr.X_op == O_constant | |
7856 | && imm_expr.X_add_number > -0x8000 | |
7857 | && imm_expr.X_add_number <= 0x8000) | |
7858 | { | |
7859 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb RS |
7860 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "t,r,j", |
7861 | dreg, sreg, BFD_RELOC_LO16); | |
8fc2e39e | 7862 | break; |
252b5132 | 7863 | } |
8fc2e39e | 7864 | used_at = 1; |
67c0d1eb RS |
7865 | load_register (AT, &imm_expr, dbl); |
7866 | macro_build (NULL, dbl ? "dsubu" : "subu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7867 | break; |
7868 | ||
7869 | case M_TEQ_I: | |
7870 | s = "teq"; | |
7871 | goto trap; | |
7872 | case M_TGE_I: | |
7873 | s = "tge"; | |
7874 | goto trap; | |
7875 | case M_TGEU_I: | |
7876 | s = "tgeu"; | |
7877 | goto trap; | |
7878 | case M_TLT_I: | |
7879 | s = "tlt"; | |
7880 | goto trap; | |
7881 | case M_TLTU_I: | |
7882 | s = "tltu"; | |
7883 | goto trap; | |
7884 | case M_TNE_I: | |
7885 | s = "tne"; | |
7886 | trap: | |
8fc2e39e | 7887 | used_at = 1; |
67c0d1eb RS |
7888 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7889 | macro_build (NULL, s, "s,t", sreg, AT); | |
252b5132 RH |
7890 | break; |
7891 | ||
252b5132 | 7892 | case M_TRUNCWS: |
43841e91 | 7893 | case M_TRUNCWD: |
e7af610e | 7894 | assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 7895 | used_at = 1; |
252b5132 RH |
7896 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
7897 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
7898 | ||
7899 | /* | |
7900 | * Is the double cfc1 instruction a bug in the mips assembler; | |
7901 | * or is there a reason for it? | |
7902 | */ | |
7d10b47d | 7903 | start_noreorder (); |
67c0d1eb RS |
7904 | macro_build (NULL, "cfc1", "t,G", treg, RA); |
7905 | macro_build (NULL, "cfc1", "t,G", treg, RA); | |
7906 | macro_build (NULL, "nop", ""); | |
252b5132 | 7907 | expr1.X_add_number = 3; |
67c0d1eb | 7908 | macro_build (&expr1, "ori", "t,r,i", AT, treg, BFD_RELOC_LO16); |
252b5132 | 7909 | expr1.X_add_number = 2; |
67c0d1eb RS |
7910 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
7911 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
7912 | macro_build (NULL, "nop", ""); | |
7913 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
7914 | dreg, sreg); | |
7915 | macro_build (NULL, "ctc1", "t,G", treg, RA); | |
7916 | macro_build (NULL, "nop", ""); | |
7d10b47d | 7917 | end_noreorder (); |
252b5132 RH |
7918 | break; |
7919 | ||
7920 | case M_ULH: | |
7921 | s = "lb"; | |
7922 | goto ulh; | |
7923 | case M_ULHU: | |
7924 | s = "lbu"; | |
7925 | ulh: | |
8fc2e39e | 7926 | used_at = 1; |
252b5132 RH |
7927 | if (offset_expr.X_add_number >= 0x7fff) |
7928 | as_bad (_("operand overflow")); | |
252b5132 | 7929 | if (! target_big_endian) |
f9419b05 | 7930 | ++offset_expr.X_add_number; |
67c0d1eb | 7931 | macro_build (&offset_expr, s, "t,o(b)", AT, BFD_RELOC_LO16, breg); |
252b5132 | 7932 | if (! target_big_endian) |
f9419b05 | 7933 | --offset_expr.X_add_number; |
252b5132 | 7934 | else |
f9419b05 | 7935 | ++offset_expr.X_add_number; |
67c0d1eb RS |
7936 | macro_build (&offset_expr, "lbu", "t,o(b)", treg, BFD_RELOC_LO16, breg); |
7937 | macro_build (NULL, "sll", "d,w,<", AT, AT, 8); | |
7938 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
7939 | break; |
7940 | ||
7941 | case M_ULD: | |
7942 | s = "ldl"; | |
7943 | s2 = "ldr"; | |
7944 | off = 7; | |
7945 | goto ulw; | |
7946 | case M_ULW: | |
7947 | s = "lwl"; | |
7948 | s2 = "lwr"; | |
7949 | off = 3; | |
7950 | ulw: | |
7951 | if (offset_expr.X_add_number >= 0x8000 - off) | |
7952 | as_bad (_("operand overflow")); | |
af22f5b2 CD |
7953 | if (treg != breg) |
7954 | tempreg = treg; | |
7955 | else | |
8fc2e39e TS |
7956 | { |
7957 | used_at = 1; | |
7958 | tempreg = AT; | |
7959 | } | |
252b5132 RH |
7960 | if (! target_big_endian) |
7961 | offset_expr.X_add_number += off; | |
67c0d1eb | 7962 | macro_build (&offset_expr, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); |
252b5132 RH |
7963 | if (! target_big_endian) |
7964 | offset_expr.X_add_number -= off; | |
7965 | else | |
7966 | offset_expr.X_add_number += off; | |
67c0d1eb | 7967 | macro_build (&offset_expr, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); |
af22f5b2 CD |
7968 | |
7969 | /* If necessary, move the result in tempreg the final destination. */ | |
7970 | if (treg == tempreg) | |
8fc2e39e | 7971 | break; |
af22f5b2 | 7972 | /* Protect second load's delay slot. */ |
017315e4 | 7973 | load_delay_nop (); |
67c0d1eb | 7974 | move_register (treg, tempreg); |
af22f5b2 | 7975 | break; |
252b5132 RH |
7976 | |
7977 | case M_ULD_A: | |
7978 | s = "ldl"; | |
7979 | s2 = "ldr"; | |
7980 | off = 7; | |
7981 | goto ulwa; | |
7982 | case M_ULW_A: | |
7983 | s = "lwl"; | |
7984 | s2 = "lwr"; | |
7985 | off = 3; | |
7986 | ulwa: | |
d6bc6245 | 7987 | used_at = 1; |
67c0d1eb | 7988 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 7989 | if (breg != 0) |
67c0d1eb | 7990 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
7991 | if (! target_big_endian) |
7992 | expr1.X_add_number = off; | |
7993 | else | |
7994 | expr1.X_add_number = 0; | |
67c0d1eb | 7995 | macro_build (&expr1, s, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
7996 | if (! target_big_endian) |
7997 | expr1.X_add_number = 0; | |
7998 | else | |
7999 | expr1.X_add_number = off; | |
67c0d1eb | 8000 | macro_build (&expr1, s2, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8001 | break; |
8002 | ||
8003 | case M_ULH_A: | |
8004 | case M_ULHU_A: | |
d6bc6245 | 8005 | used_at = 1; |
67c0d1eb | 8006 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 8007 | if (breg != 0) |
67c0d1eb | 8008 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
8009 | if (target_big_endian) |
8010 | expr1.X_add_number = 0; | |
67c0d1eb | 8011 | macro_build (&expr1, mask == M_ULH_A ? "lb" : "lbu", "t,o(b)", |
17a2f251 | 8012 | treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8013 | if (target_big_endian) |
8014 | expr1.X_add_number = 1; | |
8015 | else | |
8016 | expr1.X_add_number = 0; | |
67c0d1eb RS |
8017 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); |
8018 | macro_build (NULL, "sll", "d,w,<", treg, treg, 8); | |
8019 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
8020 | break; |
8021 | ||
8022 | case M_USH: | |
8fc2e39e | 8023 | used_at = 1; |
252b5132 RH |
8024 | if (offset_expr.X_add_number >= 0x7fff) |
8025 | as_bad (_("operand overflow")); | |
8026 | if (target_big_endian) | |
f9419b05 | 8027 | ++offset_expr.X_add_number; |
67c0d1eb RS |
8028 | macro_build (&offset_expr, "sb", "t,o(b)", treg, BFD_RELOC_LO16, breg); |
8029 | macro_build (NULL, "srl", "d,w,<", AT, treg, 8); | |
252b5132 | 8030 | if (target_big_endian) |
f9419b05 | 8031 | --offset_expr.X_add_number; |
252b5132 | 8032 | else |
f9419b05 | 8033 | ++offset_expr.X_add_number; |
67c0d1eb | 8034 | macro_build (&offset_expr, "sb", "t,o(b)", AT, BFD_RELOC_LO16, breg); |
252b5132 RH |
8035 | break; |
8036 | ||
8037 | case M_USD: | |
8038 | s = "sdl"; | |
8039 | s2 = "sdr"; | |
8040 | off = 7; | |
8041 | goto usw; | |
8042 | case M_USW: | |
8043 | s = "swl"; | |
8044 | s2 = "swr"; | |
8045 | off = 3; | |
8046 | usw: | |
8047 | if (offset_expr.X_add_number >= 0x8000 - off) | |
8048 | as_bad (_("operand overflow")); | |
8049 | if (! target_big_endian) | |
8050 | offset_expr.X_add_number += off; | |
67c0d1eb | 8051 | macro_build (&offset_expr, s, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
252b5132 RH |
8052 | if (! target_big_endian) |
8053 | offset_expr.X_add_number -= off; | |
8054 | else | |
8055 | offset_expr.X_add_number += off; | |
67c0d1eb | 8056 | macro_build (&offset_expr, s2, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
8fc2e39e | 8057 | break; |
252b5132 RH |
8058 | |
8059 | case M_USD_A: | |
8060 | s = "sdl"; | |
8061 | s2 = "sdr"; | |
8062 | off = 7; | |
8063 | goto uswa; | |
8064 | case M_USW_A: | |
8065 | s = "swl"; | |
8066 | s2 = "swr"; | |
8067 | off = 3; | |
8068 | uswa: | |
d6bc6245 | 8069 | used_at = 1; |
67c0d1eb | 8070 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 8071 | if (breg != 0) |
67c0d1eb | 8072 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
8073 | if (! target_big_endian) |
8074 | expr1.X_add_number = off; | |
8075 | else | |
8076 | expr1.X_add_number = 0; | |
67c0d1eb | 8077 | macro_build (&expr1, s, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8078 | if (! target_big_endian) |
8079 | expr1.X_add_number = 0; | |
8080 | else | |
8081 | expr1.X_add_number = off; | |
67c0d1eb | 8082 | macro_build (&expr1, s2, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8083 | break; |
8084 | ||
8085 | case M_USH_A: | |
d6bc6245 | 8086 | used_at = 1; |
67c0d1eb | 8087 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 8088 | if (breg != 0) |
67c0d1eb | 8089 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
8090 | if (! target_big_endian) |
8091 | expr1.X_add_number = 0; | |
67c0d1eb RS |
8092 | macro_build (&expr1, "sb", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
8093 | macro_build (NULL, "srl", "d,w,<", treg, treg, 8); | |
252b5132 RH |
8094 | if (! target_big_endian) |
8095 | expr1.X_add_number = 1; | |
8096 | else | |
8097 | expr1.X_add_number = 0; | |
67c0d1eb | 8098 | macro_build (&expr1, "sb", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
8099 | if (! target_big_endian) |
8100 | expr1.X_add_number = 0; | |
8101 | else | |
8102 | expr1.X_add_number = 1; | |
67c0d1eb RS |
8103 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); |
8104 | macro_build (NULL, "sll", "d,w,<", treg, treg, 8); | |
8105 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
8106 | break; |
8107 | ||
8108 | default: | |
8109 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 8110 | are added dynamically. */ |
252b5132 RH |
8111 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
8112 | break; | |
8113 | } | |
741fe287 | 8114 | if (!mips_opts.at && used_at) |
8fc2e39e | 8115 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
8116 | } |
8117 | ||
8118 | /* Implement macros in mips16 mode. */ | |
8119 | ||
8120 | static void | |
17a2f251 | 8121 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 RH |
8122 | { |
8123 | int mask; | |
8124 | int xreg, yreg, zreg, tmp; | |
252b5132 RH |
8125 | expressionS expr1; |
8126 | int dbl; | |
8127 | const char *s, *s2, *s3; | |
8128 | ||
8129 | mask = ip->insn_mo->mask; | |
8130 | ||
bf12938e RS |
8131 | xreg = MIPS16_EXTRACT_OPERAND (RX, *ip); |
8132 | yreg = MIPS16_EXTRACT_OPERAND (RY, *ip); | |
8133 | zreg = MIPS16_EXTRACT_OPERAND (RZ, *ip); | |
252b5132 | 8134 | |
252b5132 RH |
8135 | expr1.X_op = O_constant; |
8136 | expr1.X_op_symbol = NULL; | |
8137 | expr1.X_add_symbol = NULL; | |
8138 | expr1.X_add_number = 1; | |
8139 | ||
8140 | dbl = 0; | |
8141 | ||
8142 | switch (mask) | |
8143 | { | |
8144 | default: | |
8145 | internalError (); | |
8146 | ||
8147 | case M_DDIV_3: | |
8148 | dbl = 1; | |
8149 | case M_DIV_3: | |
8150 | s = "mflo"; | |
8151 | goto do_div3; | |
8152 | case M_DREM_3: | |
8153 | dbl = 1; | |
8154 | case M_REM_3: | |
8155 | s = "mfhi"; | |
8156 | do_div3: | |
7d10b47d | 8157 | start_noreorder (); |
67c0d1eb | 8158 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", xreg, yreg); |
252b5132 | 8159 | expr1.X_add_number = 2; |
67c0d1eb RS |
8160 | macro_build (&expr1, "bnez", "x,p", yreg); |
8161 | macro_build (NULL, "break", "6", 7); | |
bdaaa2e1 | 8162 | |
252b5132 RH |
8163 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
8164 | since that causes an overflow. We should do that as well, | |
8165 | but I don't see how to do the comparisons without a temporary | |
8166 | register. */ | |
7d10b47d | 8167 | end_noreorder (); |
67c0d1eb | 8168 | macro_build (NULL, s, "x", zreg); |
252b5132 RH |
8169 | break; |
8170 | ||
8171 | case M_DIVU_3: | |
8172 | s = "divu"; | |
8173 | s2 = "mflo"; | |
8174 | goto do_divu3; | |
8175 | case M_REMU_3: | |
8176 | s = "divu"; | |
8177 | s2 = "mfhi"; | |
8178 | goto do_divu3; | |
8179 | case M_DDIVU_3: | |
8180 | s = "ddivu"; | |
8181 | s2 = "mflo"; | |
8182 | goto do_divu3; | |
8183 | case M_DREMU_3: | |
8184 | s = "ddivu"; | |
8185 | s2 = "mfhi"; | |
8186 | do_divu3: | |
7d10b47d | 8187 | start_noreorder (); |
67c0d1eb | 8188 | macro_build (NULL, s, "0,x,y", xreg, yreg); |
252b5132 | 8189 | expr1.X_add_number = 2; |
67c0d1eb RS |
8190 | macro_build (&expr1, "bnez", "x,p", yreg); |
8191 | macro_build (NULL, "break", "6", 7); | |
7d10b47d | 8192 | end_noreorder (); |
67c0d1eb | 8193 | macro_build (NULL, s2, "x", zreg); |
252b5132 RH |
8194 | break; |
8195 | ||
8196 | case M_DMUL: | |
8197 | dbl = 1; | |
8198 | case M_MUL: | |
67c0d1eb RS |
8199 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
8200 | macro_build (NULL, "mflo", "x", zreg); | |
8fc2e39e | 8201 | break; |
252b5132 RH |
8202 | |
8203 | case M_DSUBU_I: | |
8204 | dbl = 1; | |
8205 | goto do_subu; | |
8206 | case M_SUBU_I: | |
8207 | do_subu: | |
8208 | if (imm_expr.X_op != O_constant) | |
8209 | as_bad (_("Unsupported large constant")); | |
8210 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 8211 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
8212 | break; |
8213 | ||
8214 | case M_SUBU_I_2: | |
8215 | if (imm_expr.X_op != O_constant) | |
8216 | as_bad (_("Unsupported large constant")); | |
8217 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 8218 | macro_build (&imm_expr, "addiu", "x,k", xreg); |
252b5132 RH |
8219 | break; |
8220 | ||
8221 | case M_DSUBU_I_2: | |
8222 | if (imm_expr.X_op != O_constant) | |
8223 | as_bad (_("Unsupported large constant")); | |
8224 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 8225 | macro_build (&imm_expr, "daddiu", "y,j", yreg); |
252b5132 RH |
8226 | break; |
8227 | ||
8228 | case M_BEQ: | |
8229 | s = "cmp"; | |
8230 | s2 = "bteqz"; | |
8231 | goto do_branch; | |
8232 | case M_BNE: | |
8233 | s = "cmp"; | |
8234 | s2 = "btnez"; | |
8235 | goto do_branch; | |
8236 | case M_BLT: | |
8237 | s = "slt"; | |
8238 | s2 = "btnez"; | |
8239 | goto do_branch; | |
8240 | case M_BLTU: | |
8241 | s = "sltu"; | |
8242 | s2 = "btnez"; | |
8243 | goto do_branch; | |
8244 | case M_BLE: | |
8245 | s = "slt"; | |
8246 | s2 = "bteqz"; | |
8247 | goto do_reverse_branch; | |
8248 | case M_BLEU: | |
8249 | s = "sltu"; | |
8250 | s2 = "bteqz"; | |
8251 | goto do_reverse_branch; | |
8252 | case M_BGE: | |
8253 | s = "slt"; | |
8254 | s2 = "bteqz"; | |
8255 | goto do_branch; | |
8256 | case M_BGEU: | |
8257 | s = "sltu"; | |
8258 | s2 = "bteqz"; | |
8259 | goto do_branch; | |
8260 | case M_BGT: | |
8261 | s = "slt"; | |
8262 | s2 = "btnez"; | |
8263 | goto do_reverse_branch; | |
8264 | case M_BGTU: | |
8265 | s = "sltu"; | |
8266 | s2 = "btnez"; | |
8267 | ||
8268 | do_reverse_branch: | |
8269 | tmp = xreg; | |
8270 | xreg = yreg; | |
8271 | yreg = tmp; | |
8272 | ||
8273 | do_branch: | |
67c0d1eb RS |
8274 | macro_build (NULL, s, "x,y", xreg, yreg); |
8275 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
8276 | break; |
8277 | ||
8278 | case M_BEQ_I: | |
8279 | s = "cmpi"; | |
8280 | s2 = "bteqz"; | |
8281 | s3 = "x,U"; | |
8282 | goto do_branch_i; | |
8283 | case M_BNE_I: | |
8284 | s = "cmpi"; | |
8285 | s2 = "btnez"; | |
8286 | s3 = "x,U"; | |
8287 | goto do_branch_i; | |
8288 | case M_BLT_I: | |
8289 | s = "slti"; | |
8290 | s2 = "btnez"; | |
8291 | s3 = "x,8"; | |
8292 | goto do_branch_i; | |
8293 | case M_BLTU_I: | |
8294 | s = "sltiu"; | |
8295 | s2 = "btnez"; | |
8296 | s3 = "x,8"; | |
8297 | goto do_branch_i; | |
8298 | case M_BLE_I: | |
8299 | s = "slti"; | |
8300 | s2 = "btnez"; | |
8301 | s3 = "x,8"; | |
8302 | goto do_addone_branch_i; | |
8303 | case M_BLEU_I: | |
8304 | s = "sltiu"; | |
8305 | s2 = "btnez"; | |
8306 | s3 = "x,8"; | |
8307 | goto do_addone_branch_i; | |
8308 | case M_BGE_I: | |
8309 | s = "slti"; | |
8310 | s2 = "bteqz"; | |
8311 | s3 = "x,8"; | |
8312 | goto do_branch_i; | |
8313 | case M_BGEU_I: | |
8314 | s = "sltiu"; | |
8315 | s2 = "bteqz"; | |
8316 | s3 = "x,8"; | |
8317 | goto do_branch_i; | |
8318 | case M_BGT_I: | |
8319 | s = "slti"; | |
8320 | s2 = "bteqz"; | |
8321 | s3 = "x,8"; | |
8322 | goto do_addone_branch_i; | |
8323 | case M_BGTU_I: | |
8324 | s = "sltiu"; | |
8325 | s2 = "bteqz"; | |
8326 | s3 = "x,8"; | |
8327 | ||
8328 | do_addone_branch_i: | |
8329 | if (imm_expr.X_op != O_constant) | |
8330 | as_bad (_("Unsupported large constant")); | |
8331 | ++imm_expr.X_add_number; | |
8332 | ||
8333 | do_branch_i: | |
67c0d1eb RS |
8334 | macro_build (&imm_expr, s, s3, xreg); |
8335 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
8336 | break; |
8337 | ||
8338 | case M_ABS: | |
8339 | expr1.X_add_number = 0; | |
67c0d1eb | 8340 | macro_build (&expr1, "slti", "x,8", yreg); |
252b5132 | 8341 | if (xreg != yreg) |
67c0d1eb | 8342 | move_register (xreg, yreg); |
252b5132 | 8343 | expr1.X_add_number = 2; |
67c0d1eb RS |
8344 | macro_build (&expr1, "bteqz", "p"); |
8345 | macro_build (NULL, "neg", "x,w", xreg, xreg); | |
252b5132 RH |
8346 | } |
8347 | } | |
8348 | ||
8349 | /* For consistency checking, verify that all bits are specified either | |
8350 | by the match/mask part of the instruction definition, or by the | |
8351 | operand list. */ | |
8352 | static int | |
17a2f251 | 8353 | validate_mips_insn (const struct mips_opcode *opc) |
252b5132 RH |
8354 | { |
8355 | const char *p = opc->args; | |
8356 | char c; | |
8357 | unsigned long used_bits = opc->mask; | |
8358 | ||
8359 | if ((used_bits & opc->match) != opc->match) | |
8360 | { | |
8361 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
8362 | opc->name, opc->args); | |
8363 | return 0; | |
8364 | } | |
8365 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
8366 | while (*p) | |
8367 | switch (c = *p++) | |
8368 | { | |
8369 | case ',': break; | |
8370 | case '(': break; | |
8371 | case ')': break; | |
af7ee8bf CD |
8372 | case '+': |
8373 | switch (c = *p++) | |
8374 | { | |
9bcd4f99 TS |
8375 | case '1': USE_BITS (OP_MASK_UDI1, OP_SH_UDI1); break; |
8376 | case '2': USE_BITS (OP_MASK_UDI2, OP_SH_UDI2); break; | |
8377 | case '3': USE_BITS (OP_MASK_UDI3, OP_SH_UDI3); break; | |
8378 | case '4': USE_BITS (OP_MASK_UDI4, OP_SH_UDI4); break; | |
af7ee8bf CD |
8379 | case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8380 | case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
8381 | case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
bbcc0807 CD |
8382 | case 'D': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8383 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
5f74bc13 CD |
8384 | case 'E': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8385 | case 'F': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
8386 | case 'G': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
8387 | case 'H': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
8388 | case 'I': break; | |
ef2e4d86 CF |
8389 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; |
8390 | case 'T': USE_BITS (OP_MASK_RT, OP_SH_RT); | |
8391 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
bb35fb24 NC |
8392 | case 'x': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; |
8393 | case 'X': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; | |
8394 | case 'p': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
8395 | case 'P': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
dd3cbb7e | 8396 | case 'Q': USE_BITS (OP_MASK_SEQI, OP_SH_SEQI); break; |
bb35fb24 NC |
8397 | case 's': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; |
8398 | case 'S': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; | |
8399 | ||
af7ee8bf CD |
8400 | default: |
8401 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
8402 | c, opc->name, opc->args); | |
8403 | return 0; | |
8404 | } | |
8405 | break; | |
252b5132 RH |
8406 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8407 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
8408 | case 'A': break; | |
4372b673 | 8409 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
8410 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
8411 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
8412 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8413 | case 'F': break; | |
8414 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 8415 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 8416 | case 'I': break; |
e972090a | 8417 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
af7ee8bf | 8418 | case 'K': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
8419 | case 'L': break; |
8420 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
8421 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
8422 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
8423 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
8424 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8425 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
8426 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8427 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
8428 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8429 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
8430 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
8431 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8432 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8433 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
8434 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8435 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
8436 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
8437 | case 'f': break; | |
8438 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
8439 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8440 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8441 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
8442 | case 'l': break; | |
8443 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8444 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8445 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
8446 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8447 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8448 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8449 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8450 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8451 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8452 | case 'x': break; | |
8453 | case 'z': break; | |
8454 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
8455 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8456 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
60b63b72 RS |
8457 | case 'e': USE_BITS (OP_MASK_VECBYTE, OP_SH_VECBYTE); break; |
8458 | case '%': USE_BITS (OP_MASK_VECALIGN, OP_SH_VECALIGN); break; | |
8459 | case '[': break; | |
8460 | case ']': break; | |
620edafd | 8461 | case '1': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8b082fb1 | 8462 | case '2': USE_BITS (OP_MASK_BP, OP_SH_BP); break; |
74cd071d CF |
8463 | case '3': USE_BITS (OP_MASK_SA3, OP_SH_SA3); break; |
8464 | case '4': USE_BITS (OP_MASK_SA4, OP_SH_SA4); break; | |
8465 | case '5': USE_BITS (OP_MASK_IMM8, OP_SH_IMM8); break; | |
8466 | case '6': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8467 | case '7': USE_BITS (OP_MASK_DSPACC, OP_SH_DSPACC); break; | |
8468 | case '8': USE_BITS (OP_MASK_WRDSP, OP_SH_WRDSP); break; | |
8469 | case '9': USE_BITS (OP_MASK_DSPACC_S, OP_SH_DSPACC_S);break; | |
8470 | case '0': USE_BITS (OP_MASK_DSPSFT, OP_SH_DSPSFT); break; | |
8471 | case '\'': USE_BITS (OP_MASK_RDDSP, OP_SH_RDDSP); break; | |
8472 | case ':': USE_BITS (OP_MASK_DSPSFT_7, OP_SH_DSPSFT_7);break; | |
8473 | case '@': USE_BITS (OP_MASK_IMM10, OP_SH_IMM10); break; | |
ef2e4d86 CF |
8474 | case '!': USE_BITS (OP_MASK_MT_U, OP_SH_MT_U); break; |
8475 | case '$': USE_BITS (OP_MASK_MT_H, OP_SH_MT_H); break; | |
8476 | case '*': USE_BITS (OP_MASK_MTACC_T, OP_SH_MTACC_T); break; | |
8477 | case '&': USE_BITS (OP_MASK_MTACC_D, OP_SH_MTACC_D); break; | |
8478 | case 'g': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
252b5132 RH |
8479 | default: |
8480 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
8481 | c, opc->name, opc->args); | |
8482 | return 0; | |
8483 | } | |
8484 | #undef USE_BITS | |
8485 | if (used_bits != 0xffffffff) | |
8486 | { | |
8487 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
8488 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
8489 | return 0; | |
8490 | } | |
8491 | return 1; | |
8492 | } | |
8493 | ||
9bcd4f99 TS |
8494 | /* UDI immediates. */ |
8495 | struct mips_immed { | |
8496 | char type; | |
8497 | unsigned int shift; | |
8498 | unsigned long mask; | |
8499 | const char * desc; | |
8500 | }; | |
8501 | ||
8502 | static const struct mips_immed mips_immed[] = { | |
8503 | { '1', OP_SH_UDI1, OP_MASK_UDI1, 0}, | |
8504 | { '2', OP_SH_UDI2, OP_MASK_UDI2, 0}, | |
8505 | { '3', OP_SH_UDI3, OP_MASK_UDI3, 0}, | |
8506 | { '4', OP_SH_UDI4, OP_MASK_UDI4, 0}, | |
8507 | { 0,0,0,0 } | |
8508 | }; | |
8509 | ||
7455baf8 TS |
8510 | /* Check whether an odd floating-point register is allowed. */ |
8511 | static int | |
8512 | mips_oddfpreg_ok (const struct mips_opcode *insn, int argnum) | |
8513 | { | |
8514 | const char *s = insn->name; | |
8515 | ||
8516 | if (insn->pinfo == INSN_MACRO) | |
8517 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
8518 | return 1; | |
8519 | ||
8520 | if (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa)) | |
8521 | { | |
8522 | /* Allow odd registers for single-precision ops. */ | |
8523 | switch (insn->pinfo & (FP_S | FP_D)) | |
8524 | { | |
8525 | case FP_S: | |
8526 | case 0: | |
8527 | return 1; /* both single precision - ok */ | |
8528 | case FP_D: | |
8529 | return 0; /* both double precision - fail */ | |
8530 | default: | |
8531 | break; | |
8532 | } | |
8533 | ||
8534 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ | |
8535 | s = strchr (insn->name, '.'); | |
8536 | if (argnum == 2) | |
8537 | s = s != NULL ? strchr (s + 1, '.') : NULL; | |
8538 | return (s != NULL && (s[1] == 'w' || s[1] == 's')); | |
8539 | } | |
8540 | ||
8541 | /* Single-precision coprocessor loads and moves are OK too. */ | |
8542 | if ((insn->pinfo & FP_S) | |
8543 | && (insn->pinfo & (INSN_COPROC_MEMORY_DELAY | INSN_STORE_MEMORY | |
8544 | | INSN_LOAD_COPROC_DELAY | INSN_COPROC_MOVE_DELAY))) | |
8545 | return 1; | |
8546 | ||
8547 | return 0; | |
8548 | } | |
8549 | ||
252b5132 RH |
8550 | /* This routine assembles an instruction into its binary format. As a |
8551 | side effect, it sets one of the global variables imm_reloc or | |
8552 | offset_reloc to the type of relocation to do if one of the operands | |
8553 | is an address expression. */ | |
8554 | ||
8555 | static void | |
17a2f251 | 8556 | mips_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
8557 | { |
8558 | char *s; | |
8559 | const char *args; | |
43841e91 | 8560 | char c = 0; |
252b5132 RH |
8561 | struct mips_opcode *insn; |
8562 | char *argsStart; | |
8563 | unsigned int regno; | |
8564 | unsigned int lastregno = 0; | |
af7ee8bf | 8565 | unsigned int lastpos = 0; |
071742cf | 8566 | unsigned int limlo, limhi; |
252b5132 RH |
8567 | char *s_reset; |
8568 | char save_c = 0; | |
74cd071d | 8569 | offsetT min_range, max_range; |
707bfff6 TS |
8570 | int argnum; |
8571 | unsigned int rtype; | |
252b5132 RH |
8572 | |
8573 | insn_error = NULL; | |
8574 | ||
8575 | /* If the instruction contains a '.', we first try to match an instruction | |
8576 | including the '.'. Then we try again without the '.'. */ | |
8577 | insn = NULL; | |
3882b010 | 8578 | for (s = str; *s != '\0' && !ISSPACE (*s); ++s) |
252b5132 RH |
8579 | continue; |
8580 | ||
8581 | /* If we stopped on whitespace, then replace the whitespace with null for | |
8582 | the call to hash_find. Save the character we replaced just in case we | |
8583 | have to re-parse the instruction. */ | |
3882b010 | 8584 | if (ISSPACE (*s)) |
252b5132 RH |
8585 | { |
8586 | save_c = *s; | |
8587 | *s++ = '\0'; | |
8588 | } | |
bdaaa2e1 | 8589 | |
252b5132 RH |
8590 | insn = (struct mips_opcode *) hash_find (op_hash, str); |
8591 | ||
8592 | /* If we didn't find the instruction in the opcode table, try again, but | |
8593 | this time with just the instruction up to, but not including the | |
8594 | first '.'. */ | |
8595 | if (insn == NULL) | |
8596 | { | |
bdaaa2e1 | 8597 | /* Restore the character we overwrite above (if any). */ |
252b5132 RH |
8598 | if (save_c) |
8599 | *(--s) = save_c; | |
8600 | ||
8601 | /* Scan up to the first '.' or whitespace. */ | |
3882b010 L |
8602 | for (s = str; |
8603 | *s != '\0' && *s != '.' && !ISSPACE (*s); | |
8604 | ++s) | |
252b5132 RH |
8605 | continue; |
8606 | ||
8607 | /* If we did not find a '.', then we can quit now. */ | |
8608 | if (*s != '.') | |
8609 | { | |
8610 | insn_error = "unrecognized opcode"; | |
8611 | return; | |
8612 | } | |
8613 | ||
8614 | /* Lookup the instruction in the hash table. */ | |
8615 | *s++ = '\0'; | |
8616 | if ((insn = (struct mips_opcode *) hash_find (op_hash, str)) == NULL) | |
8617 | { | |
8618 | insn_error = "unrecognized opcode"; | |
8619 | return; | |
8620 | } | |
252b5132 RH |
8621 | } |
8622 | ||
8623 | argsStart = s; | |
8624 | for (;;) | |
8625 | { | |
b34976b6 | 8626 | bfd_boolean ok; |
252b5132 RH |
8627 | |
8628 | assert (strcmp (insn->name, str) == 0); | |
8629 | ||
037b32b9 | 8630 | ok = is_opcode_valid (insn, FALSE); |
252b5132 RH |
8631 | if (! ok) |
8632 | { | |
8633 | if (insn + 1 < &mips_opcodes[NUMOPCODES] | |
8634 | && strcmp (insn->name, insn[1].name) == 0) | |
8635 | { | |
8636 | ++insn; | |
8637 | continue; | |
8638 | } | |
252b5132 | 8639 | else |
beae10d5 | 8640 | { |
268f6bed L |
8641 | if (!insn_error) |
8642 | { | |
8643 | static char buf[100]; | |
fef14a42 TS |
8644 | sprintf (buf, |
8645 | _("opcode not supported on this processor: %s (%s)"), | |
8646 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
8647 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
268f6bed L |
8648 | insn_error = buf; |
8649 | } | |
8650 | if (save_c) | |
8651 | *(--s) = save_c; | |
2bd7f1f3 | 8652 | return; |
252b5132 | 8653 | } |
252b5132 RH |
8654 | } |
8655 | ||
1e915849 | 8656 | create_insn (ip, insn); |
268f6bed | 8657 | insn_error = NULL; |
707bfff6 | 8658 | argnum = 1; |
24864476 | 8659 | lastregno = 0xffffffff; |
252b5132 RH |
8660 | for (args = insn->args;; ++args) |
8661 | { | |
deec1734 CD |
8662 | int is_mdmx; |
8663 | ||
ad8d3bb3 | 8664 | s += strspn (s, " \t"); |
deec1734 | 8665 | is_mdmx = 0; |
252b5132 RH |
8666 | switch (*args) |
8667 | { | |
8668 | case '\0': /* end of args */ | |
8669 | if (*s == '\0') | |
8670 | return; | |
8671 | break; | |
8672 | ||
8b082fb1 TS |
8673 | case '2': /* dsp 2-bit unsigned immediate in bit 11 */ |
8674 | my_getExpression (&imm_expr, s); | |
8675 | check_absolute_expr (ip, &imm_expr); | |
8676 | if ((unsigned long) imm_expr.X_add_number != 1 | |
8677 | && (unsigned long) imm_expr.X_add_number != 3) | |
8678 | { | |
8679 | as_bad (_("BALIGN immediate not 1 or 3 (%lu)"), | |
8680 | (unsigned long) imm_expr.X_add_number); | |
8681 | } | |
8682 | INSERT_OPERAND (BP, *ip, imm_expr.X_add_number); | |
8683 | imm_expr.X_op = O_absent; | |
8684 | s = expr_end; | |
8685 | continue; | |
8686 | ||
74cd071d CF |
8687 | case '3': /* dsp 3-bit unsigned immediate in bit 21 */ |
8688 | my_getExpression (&imm_expr, s); | |
8689 | check_absolute_expr (ip, &imm_expr); | |
8690 | if (imm_expr.X_add_number & ~OP_MASK_SA3) | |
8691 | { | |
a9e24354 TS |
8692 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8693 | OP_MASK_SA3, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8694 | } |
a9e24354 | 8695 | INSERT_OPERAND (SA3, *ip, imm_expr.X_add_number); |
74cd071d CF |
8696 | imm_expr.X_op = O_absent; |
8697 | s = expr_end; | |
8698 | continue; | |
8699 | ||
8700 | case '4': /* dsp 4-bit unsigned immediate in bit 21 */ | |
8701 | my_getExpression (&imm_expr, s); | |
8702 | check_absolute_expr (ip, &imm_expr); | |
8703 | if (imm_expr.X_add_number & ~OP_MASK_SA4) | |
8704 | { | |
a9e24354 TS |
8705 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8706 | OP_MASK_SA4, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8707 | } |
a9e24354 | 8708 | INSERT_OPERAND (SA4, *ip, imm_expr.X_add_number); |
74cd071d CF |
8709 | imm_expr.X_op = O_absent; |
8710 | s = expr_end; | |
8711 | continue; | |
8712 | ||
8713 | case '5': /* dsp 8-bit unsigned immediate in bit 16 */ | |
8714 | my_getExpression (&imm_expr, s); | |
8715 | check_absolute_expr (ip, &imm_expr); | |
8716 | if (imm_expr.X_add_number & ~OP_MASK_IMM8) | |
8717 | { | |
a9e24354 TS |
8718 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8719 | OP_MASK_IMM8, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8720 | } |
a9e24354 | 8721 | INSERT_OPERAND (IMM8, *ip, imm_expr.X_add_number); |
74cd071d CF |
8722 | imm_expr.X_op = O_absent; |
8723 | s = expr_end; | |
8724 | continue; | |
8725 | ||
8726 | case '6': /* dsp 5-bit unsigned immediate in bit 21 */ | |
8727 | my_getExpression (&imm_expr, s); | |
8728 | check_absolute_expr (ip, &imm_expr); | |
8729 | if (imm_expr.X_add_number & ~OP_MASK_RS) | |
8730 | { | |
a9e24354 TS |
8731 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8732 | OP_MASK_RS, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8733 | } |
a9e24354 | 8734 | INSERT_OPERAND (RS, *ip, imm_expr.X_add_number); |
74cd071d CF |
8735 | imm_expr.X_op = O_absent; |
8736 | s = expr_end; | |
8737 | continue; | |
8738 | ||
8739 | case '7': /* four dsp accumulators in bits 11,12 */ | |
8740 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8741 | s[3] >= '0' && s[3] <= '3') | |
8742 | { | |
8743 | regno = s[3] - '0'; | |
8744 | s += 4; | |
a9e24354 | 8745 | INSERT_OPERAND (DSPACC, *ip, regno); |
74cd071d CF |
8746 | continue; |
8747 | } | |
8748 | else | |
8749 | as_bad (_("Invalid dsp acc register")); | |
8750 | break; | |
8751 | ||
8752 | case '8': /* dsp 6-bit unsigned immediate in bit 11 */ | |
8753 | my_getExpression (&imm_expr, s); | |
8754 | check_absolute_expr (ip, &imm_expr); | |
8755 | if (imm_expr.X_add_number & ~OP_MASK_WRDSP) | |
8756 | { | |
a9e24354 TS |
8757 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8758 | OP_MASK_WRDSP, | |
8759 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8760 | } |
a9e24354 | 8761 | INSERT_OPERAND (WRDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
8762 | imm_expr.X_op = O_absent; |
8763 | s = expr_end; | |
8764 | continue; | |
8765 | ||
8766 | case '9': /* four dsp accumulators in bits 21,22 */ | |
8767 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8768 | s[3] >= '0' && s[3] <= '3') | |
8769 | { | |
8770 | regno = s[3] - '0'; | |
8771 | s += 4; | |
a9e24354 | 8772 | INSERT_OPERAND (DSPACC_S, *ip, regno); |
74cd071d CF |
8773 | continue; |
8774 | } | |
8775 | else | |
8776 | as_bad (_("Invalid dsp acc register")); | |
8777 | break; | |
8778 | ||
8779 | case '0': /* dsp 6-bit signed immediate in bit 20 */ | |
8780 | my_getExpression (&imm_expr, s); | |
8781 | check_absolute_expr (ip, &imm_expr); | |
8782 | min_range = -((OP_MASK_DSPSFT + 1) >> 1); | |
8783 | max_range = ((OP_MASK_DSPSFT + 1) >> 1) - 1; | |
8784 | if (imm_expr.X_add_number < min_range || | |
8785 | imm_expr.X_add_number > max_range) | |
8786 | { | |
a9e24354 TS |
8787 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8788 | (long) min_range, (long) max_range, | |
8789 | (long) imm_expr.X_add_number); | |
74cd071d | 8790 | } |
a9e24354 | 8791 | INSERT_OPERAND (DSPSFT, *ip, imm_expr.X_add_number); |
74cd071d CF |
8792 | imm_expr.X_op = O_absent; |
8793 | s = expr_end; | |
8794 | continue; | |
8795 | ||
8796 | case '\'': /* dsp 6-bit unsigned immediate in bit 16 */ | |
8797 | my_getExpression (&imm_expr, s); | |
8798 | check_absolute_expr (ip, &imm_expr); | |
8799 | if (imm_expr.X_add_number & ~OP_MASK_RDDSP) | |
8800 | { | |
a9e24354 TS |
8801 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8802 | OP_MASK_RDDSP, | |
8803 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8804 | } |
a9e24354 | 8805 | INSERT_OPERAND (RDDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
8806 | imm_expr.X_op = O_absent; |
8807 | s = expr_end; | |
8808 | continue; | |
8809 | ||
8810 | case ':': /* dsp 7-bit signed immediate in bit 19 */ | |
8811 | my_getExpression (&imm_expr, s); | |
8812 | check_absolute_expr (ip, &imm_expr); | |
8813 | min_range = -((OP_MASK_DSPSFT_7 + 1) >> 1); | |
8814 | max_range = ((OP_MASK_DSPSFT_7 + 1) >> 1) - 1; | |
8815 | if (imm_expr.X_add_number < min_range || | |
8816 | imm_expr.X_add_number > max_range) | |
8817 | { | |
a9e24354 TS |
8818 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8819 | (long) min_range, (long) max_range, | |
8820 | (long) imm_expr.X_add_number); | |
74cd071d | 8821 | } |
a9e24354 | 8822 | INSERT_OPERAND (DSPSFT_7, *ip, imm_expr.X_add_number); |
74cd071d CF |
8823 | imm_expr.X_op = O_absent; |
8824 | s = expr_end; | |
8825 | continue; | |
8826 | ||
8827 | case '@': /* dsp 10-bit signed immediate in bit 16 */ | |
8828 | my_getExpression (&imm_expr, s); | |
8829 | check_absolute_expr (ip, &imm_expr); | |
8830 | min_range = -((OP_MASK_IMM10 + 1) >> 1); | |
8831 | max_range = ((OP_MASK_IMM10 + 1) >> 1) - 1; | |
8832 | if (imm_expr.X_add_number < min_range || | |
8833 | imm_expr.X_add_number > max_range) | |
8834 | { | |
a9e24354 TS |
8835 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8836 | (long) min_range, (long) max_range, | |
8837 | (long) imm_expr.X_add_number); | |
74cd071d | 8838 | } |
a9e24354 | 8839 | INSERT_OPERAND (IMM10, *ip, imm_expr.X_add_number); |
74cd071d CF |
8840 | imm_expr.X_op = O_absent; |
8841 | s = expr_end; | |
8842 | continue; | |
8843 | ||
a9e24354 | 8844 | case '!': /* MT usermode flag bit. */ |
ef2e4d86 CF |
8845 | my_getExpression (&imm_expr, s); |
8846 | check_absolute_expr (ip, &imm_expr); | |
8847 | if (imm_expr.X_add_number & ~OP_MASK_MT_U) | |
a9e24354 TS |
8848 | as_bad (_("MT usermode bit not 0 or 1 (%lu)"), |
8849 | (unsigned long) imm_expr.X_add_number); | |
8850 | INSERT_OPERAND (MT_U, *ip, imm_expr.X_add_number); | |
ef2e4d86 CF |
8851 | imm_expr.X_op = O_absent; |
8852 | s = expr_end; | |
8853 | continue; | |
8854 | ||
a9e24354 | 8855 | case '$': /* MT load high flag bit. */ |
ef2e4d86 CF |
8856 | my_getExpression (&imm_expr, s); |
8857 | check_absolute_expr (ip, &imm_expr); | |
8858 | if (imm_expr.X_add_number & ~OP_MASK_MT_H) | |
a9e24354 TS |
8859 | as_bad (_("MT load high bit not 0 or 1 (%lu)"), |
8860 | (unsigned long) imm_expr.X_add_number); | |
8861 | INSERT_OPERAND (MT_H, *ip, imm_expr.X_add_number); | |
ef2e4d86 CF |
8862 | imm_expr.X_op = O_absent; |
8863 | s = expr_end; | |
8864 | continue; | |
8865 | ||
8866 | case '*': /* four dsp accumulators in bits 18,19 */ | |
8867 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8868 | s[3] >= '0' && s[3] <= '3') | |
8869 | { | |
8870 | regno = s[3] - '0'; | |
8871 | s += 4; | |
a9e24354 | 8872 | INSERT_OPERAND (MTACC_T, *ip, regno); |
ef2e4d86 CF |
8873 | continue; |
8874 | } | |
8875 | else | |
8876 | as_bad (_("Invalid dsp/smartmips acc register")); | |
8877 | break; | |
8878 | ||
8879 | case '&': /* four dsp accumulators in bits 13,14 */ | |
8880 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8881 | s[3] >= '0' && s[3] <= '3') | |
8882 | { | |
8883 | regno = s[3] - '0'; | |
8884 | s += 4; | |
a9e24354 | 8885 | INSERT_OPERAND (MTACC_D, *ip, regno); |
ef2e4d86 CF |
8886 | continue; |
8887 | } | |
8888 | else | |
8889 | as_bad (_("Invalid dsp/smartmips acc register")); | |
8890 | break; | |
8891 | ||
252b5132 | 8892 | case ',': |
a339155f | 8893 | ++argnum; |
252b5132 RH |
8894 | if (*s++ == *args) |
8895 | continue; | |
8896 | s--; | |
8897 | switch (*++args) | |
8898 | { | |
8899 | case 'r': | |
8900 | case 'v': | |
bf12938e | 8901 | INSERT_OPERAND (RS, *ip, lastregno); |
252b5132 RH |
8902 | continue; |
8903 | ||
8904 | case 'w': | |
bf12938e | 8905 | INSERT_OPERAND (RT, *ip, lastregno); |
38487616 TS |
8906 | continue; |
8907 | ||
252b5132 | 8908 | case 'W': |
bf12938e | 8909 | INSERT_OPERAND (FT, *ip, lastregno); |
252b5132 RH |
8910 | continue; |
8911 | ||
8912 | case 'V': | |
bf12938e | 8913 | INSERT_OPERAND (FS, *ip, lastregno); |
252b5132 RH |
8914 | continue; |
8915 | } | |
8916 | break; | |
8917 | ||
8918 | case '(': | |
8919 | /* Handle optional base register. | |
8920 | Either the base register is omitted or | |
bdaaa2e1 | 8921 | we must have a left paren. */ |
252b5132 RH |
8922 | /* This is dependent on the next operand specifier |
8923 | is a base register specification. */ | |
8924 | assert (args[1] == 'b' || args[1] == '5' | |
8925 | || args[1] == '-' || args[1] == '4'); | |
8926 | if (*s == '\0') | |
8927 | return; | |
8928 | ||
8929 | case ')': /* these must match exactly */ | |
60b63b72 RS |
8930 | case '[': |
8931 | case ']': | |
252b5132 RH |
8932 | if (*s++ == *args) |
8933 | continue; | |
8934 | break; | |
8935 | ||
af7ee8bf CD |
8936 | case '+': /* Opcode extension character. */ |
8937 | switch (*++args) | |
8938 | { | |
9bcd4f99 TS |
8939 | case '1': /* UDI immediates. */ |
8940 | case '2': | |
8941 | case '3': | |
8942 | case '4': | |
8943 | { | |
8944 | const struct mips_immed *imm = mips_immed; | |
8945 | ||
8946 | while (imm->type && imm->type != *args) | |
8947 | ++imm; | |
8948 | if (! imm->type) | |
8949 | internalError (); | |
8950 | my_getExpression (&imm_expr, s); | |
8951 | check_absolute_expr (ip, &imm_expr); | |
8952 | if ((unsigned long) imm_expr.X_add_number & ~imm->mask) | |
8953 | { | |
8954 | as_warn (_("Illegal %s number (%lu, 0x%lx)"), | |
8955 | imm->desc ? imm->desc : ip->insn_mo->name, | |
8956 | (unsigned long) imm_expr.X_add_number, | |
8957 | (unsigned long) imm_expr.X_add_number); | |
8958 | imm_expr.X_add_number &= imm->mask; | |
8959 | } | |
8960 | ip->insn_opcode |= ((unsigned long) imm_expr.X_add_number | |
8961 | << imm->shift); | |
8962 | imm_expr.X_op = O_absent; | |
8963 | s = expr_end; | |
8964 | } | |
8965 | continue; | |
8966 | ||
071742cf CD |
8967 | case 'A': /* ins/ext position, becomes LSB. */ |
8968 | limlo = 0; | |
8969 | limhi = 31; | |
5f74bc13 CD |
8970 | goto do_lsb; |
8971 | case 'E': | |
8972 | limlo = 32; | |
8973 | limhi = 63; | |
8974 | goto do_lsb; | |
8975 | do_lsb: | |
071742cf CD |
8976 | my_getExpression (&imm_expr, s); |
8977 | check_absolute_expr (ip, &imm_expr); | |
8978 | if ((unsigned long) imm_expr.X_add_number < limlo | |
8979 | || (unsigned long) imm_expr.X_add_number > limhi) | |
8980 | { | |
8981 | as_bad (_("Improper position (%lu)"), | |
8982 | (unsigned long) imm_expr.X_add_number); | |
8983 | imm_expr.X_add_number = limlo; | |
8984 | } | |
8985 | lastpos = imm_expr.X_add_number; | |
bf12938e | 8986 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); |
071742cf CD |
8987 | imm_expr.X_op = O_absent; |
8988 | s = expr_end; | |
8989 | continue; | |
8990 | ||
8991 | case 'B': /* ins size, becomes MSB. */ | |
8992 | limlo = 1; | |
8993 | limhi = 32; | |
5f74bc13 CD |
8994 | goto do_msb; |
8995 | case 'F': | |
8996 | limlo = 33; | |
8997 | limhi = 64; | |
8998 | goto do_msb; | |
8999 | do_msb: | |
071742cf CD |
9000 | my_getExpression (&imm_expr, s); |
9001 | check_absolute_expr (ip, &imm_expr); | |
9002 | /* Check for negative input so that small negative numbers | |
9003 | will not succeed incorrectly. The checks against | |
9004 | (pos+size) transitively check "size" itself, | |
9005 | assuming that "pos" is reasonable. */ | |
9006 | if ((long) imm_expr.X_add_number < 0 | |
9007 | || ((unsigned long) imm_expr.X_add_number | |
9008 | + lastpos) < limlo | |
9009 | || ((unsigned long) imm_expr.X_add_number | |
9010 | + lastpos) > limhi) | |
9011 | { | |
9012 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
9013 | (unsigned long) imm_expr.X_add_number, | |
9014 | (unsigned long) lastpos); | |
9015 | imm_expr.X_add_number = limlo - lastpos; | |
9016 | } | |
bf12938e RS |
9017 | INSERT_OPERAND (INSMSB, *ip, |
9018 | lastpos + imm_expr.X_add_number - 1); | |
071742cf CD |
9019 | imm_expr.X_op = O_absent; |
9020 | s = expr_end; | |
9021 | continue; | |
9022 | ||
9023 | case 'C': /* ext size, becomes MSBD. */ | |
9024 | limlo = 1; | |
9025 | limhi = 32; | |
5f74bc13 CD |
9026 | goto do_msbd; |
9027 | case 'G': | |
9028 | limlo = 33; | |
9029 | limhi = 64; | |
9030 | goto do_msbd; | |
9031 | case 'H': | |
9032 | limlo = 33; | |
9033 | limhi = 64; | |
9034 | goto do_msbd; | |
9035 | do_msbd: | |
071742cf CD |
9036 | my_getExpression (&imm_expr, s); |
9037 | check_absolute_expr (ip, &imm_expr); | |
9038 | /* Check for negative input so that small negative numbers | |
9039 | will not succeed incorrectly. The checks against | |
9040 | (pos+size) transitively check "size" itself, | |
9041 | assuming that "pos" is reasonable. */ | |
9042 | if ((long) imm_expr.X_add_number < 0 | |
9043 | || ((unsigned long) imm_expr.X_add_number | |
9044 | + lastpos) < limlo | |
9045 | || ((unsigned long) imm_expr.X_add_number | |
9046 | + lastpos) > limhi) | |
9047 | { | |
9048 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
9049 | (unsigned long) imm_expr.X_add_number, | |
9050 | (unsigned long) lastpos); | |
9051 | imm_expr.X_add_number = limlo - lastpos; | |
9052 | } | |
bf12938e | 9053 | INSERT_OPERAND (EXTMSBD, *ip, imm_expr.X_add_number - 1); |
071742cf CD |
9054 | imm_expr.X_op = O_absent; |
9055 | s = expr_end; | |
9056 | continue; | |
af7ee8bf | 9057 | |
bbcc0807 CD |
9058 | case 'D': |
9059 | /* +D is for disassembly only; never match. */ | |
9060 | break; | |
9061 | ||
5f74bc13 CD |
9062 | case 'I': |
9063 | /* "+I" is like "I", except that imm2_expr is used. */ | |
9064 | my_getExpression (&imm2_expr, s); | |
9065 | if (imm2_expr.X_op != O_big | |
9066 | && imm2_expr.X_op != O_constant) | |
9067 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
9068 | if (HAVE_32BIT_GPRS) |
9069 | normalize_constant_expr (&imm2_expr); | |
5f74bc13 CD |
9070 | s = expr_end; |
9071 | continue; | |
9072 | ||
707bfff6 | 9073 | case 'T': /* Coprocessor register. */ |
ef2e4d86 CF |
9074 | /* +T is for disassembly only; never match. */ |
9075 | break; | |
9076 | ||
707bfff6 | 9077 | case 't': /* Coprocessor register number. */ |
ef2e4d86 CF |
9078 | if (s[0] == '$' && ISDIGIT (s[1])) |
9079 | { | |
9080 | ++s; | |
9081 | regno = 0; | |
9082 | do | |
9083 | { | |
9084 | regno *= 10; | |
9085 | regno += *s - '0'; | |
9086 | ++s; | |
9087 | } | |
9088 | while (ISDIGIT (*s)); | |
9089 | if (regno > 31) | |
9090 | as_bad (_("Invalid register number (%d)"), regno); | |
9091 | else | |
9092 | { | |
a9e24354 | 9093 | INSERT_OPERAND (RT, *ip, regno); |
ef2e4d86 CF |
9094 | continue; |
9095 | } | |
9096 | } | |
9097 | else | |
9098 | as_bad (_("Invalid coprocessor 0 register number")); | |
9099 | break; | |
9100 | ||
bb35fb24 NC |
9101 | case 'x': |
9102 | /* bbit[01] and bbit[01]32 bit index. Give error if index | |
9103 | is not in the valid range. */ | |
9104 | my_getExpression (&imm_expr, s); | |
9105 | check_absolute_expr (ip, &imm_expr); | |
9106 | if ((unsigned) imm_expr.X_add_number > 31) | |
9107 | { | |
9108 | as_bad (_("Improper bit index (%lu)"), | |
9109 | (unsigned long) imm_expr.X_add_number); | |
9110 | imm_expr.X_add_number = 0; | |
9111 | } | |
9112 | INSERT_OPERAND (BBITIND, *ip, imm_expr.X_add_number); | |
9113 | imm_expr.X_op = O_absent; | |
9114 | s = expr_end; | |
9115 | continue; | |
9116 | ||
9117 | case 'X': | |
9118 | /* bbit[01] bit index when bbit is used but we generate | |
9119 | bbit[01]32 because the index is over 32. Move to the | |
9120 | next candidate if index is not in the valid range. */ | |
9121 | my_getExpression (&imm_expr, s); | |
9122 | check_absolute_expr (ip, &imm_expr); | |
9123 | if ((unsigned) imm_expr.X_add_number < 32 | |
9124 | || (unsigned) imm_expr.X_add_number > 63) | |
9125 | break; | |
9126 | INSERT_OPERAND (BBITIND, *ip, imm_expr.X_add_number - 32); | |
9127 | imm_expr.X_op = O_absent; | |
9128 | s = expr_end; | |
9129 | continue; | |
9130 | ||
9131 | case 'p': | |
9132 | /* cins, cins32, exts and exts32 position field. Give error | |
9133 | if it's not in the valid range. */ | |
9134 | my_getExpression (&imm_expr, s); | |
9135 | check_absolute_expr (ip, &imm_expr); | |
9136 | if ((unsigned) imm_expr.X_add_number > 31) | |
9137 | { | |
9138 | as_bad (_("Improper position (%lu)"), | |
9139 | (unsigned long) imm_expr.X_add_number); | |
9140 | imm_expr.X_add_number = 0; | |
9141 | } | |
9142 | /* Make the pos explicit to simplify +S. */ | |
9143 | lastpos = imm_expr.X_add_number + 32; | |
9144 | INSERT_OPERAND (CINSPOS, *ip, imm_expr.X_add_number); | |
9145 | imm_expr.X_op = O_absent; | |
9146 | s = expr_end; | |
9147 | continue; | |
9148 | ||
9149 | case 'P': | |
9150 | /* cins, cins32, exts and exts32 position field. Move to | |
9151 | the next candidate if it's not in the valid range. */ | |
9152 | my_getExpression (&imm_expr, s); | |
9153 | check_absolute_expr (ip, &imm_expr); | |
9154 | if ((unsigned) imm_expr.X_add_number < 32 | |
9155 | || (unsigned) imm_expr.X_add_number > 63) | |
9156 | break; | |
9157 | lastpos = imm_expr.X_add_number; | |
9158 | INSERT_OPERAND (CINSPOS, *ip, imm_expr.X_add_number - 32); | |
9159 | imm_expr.X_op = O_absent; | |
9160 | s = expr_end; | |
9161 | continue; | |
9162 | ||
9163 | case 's': | |
9164 | /* cins and exts length-minus-one field. */ | |
9165 | my_getExpression (&imm_expr, s); | |
9166 | check_absolute_expr (ip, &imm_expr); | |
9167 | if ((unsigned long) imm_expr.X_add_number > 31) | |
9168 | { | |
9169 | as_bad (_("Improper size (%lu)"), | |
9170 | (unsigned long) imm_expr.X_add_number); | |
9171 | imm_expr.X_add_number = 0; | |
9172 | } | |
9173 | INSERT_OPERAND (CINSLM1, *ip, imm_expr.X_add_number); | |
9174 | imm_expr.X_op = O_absent; | |
9175 | s = expr_end; | |
9176 | continue; | |
9177 | ||
9178 | case 'S': | |
9179 | /* cins32/exts32 and cins/exts aliasing cint32/exts32 | |
9180 | length-minus-one field. */ | |
9181 | my_getExpression (&imm_expr, s); | |
9182 | check_absolute_expr (ip, &imm_expr); | |
9183 | if ((long) imm_expr.X_add_number < 0 | |
9184 | || (unsigned long) imm_expr.X_add_number + lastpos > 63) | |
9185 | { | |
9186 | as_bad (_("Improper size (%lu)"), | |
9187 | (unsigned long) imm_expr.X_add_number); | |
9188 | imm_expr.X_add_number = 0; | |
9189 | } | |
9190 | INSERT_OPERAND (CINSLM1, *ip, imm_expr.X_add_number); | |
9191 | imm_expr.X_op = O_absent; | |
9192 | s = expr_end; | |
9193 | continue; | |
9194 | ||
dd3cbb7e NC |
9195 | case 'Q': |
9196 | /* seqi/snei immediate field. */ | |
9197 | my_getExpression (&imm_expr, s); | |
9198 | check_absolute_expr (ip, &imm_expr); | |
9199 | if ((long) imm_expr.X_add_number < -512 | |
9200 | || (long) imm_expr.X_add_number >= 512) | |
9201 | { | |
9202 | as_bad (_("Improper immediate (%ld)"), | |
9203 | (long) imm_expr.X_add_number); | |
9204 | imm_expr.X_add_number = 0; | |
9205 | } | |
9206 | INSERT_OPERAND (SEQI, *ip, imm_expr.X_add_number); | |
9207 | imm_expr.X_op = O_absent; | |
9208 | s = expr_end; | |
9209 | continue; | |
9210 | ||
af7ee8bf CD |
9211 | default: |
9212 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
9213 | *args, insn->name, insn->args); | |
9214 | /* Further processing is fruitless. */ | |
9215 | return; | |
9216 | } | |
9217 | break; | |
9218 | ||
252b5132 RH |
9219 | case '<': /* must be at least one digit */ |
9220 | /* | |
9221 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
9222 | * than 31 or less than 0, then the shift amount should be |
9223 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
9224 | * We issue a warning and mask out all but the low 5 bits. |
9225 | */ | |
9226 | my_getExpression (&imm_expr, s); | |
9227 | check_absolute_expr (ip, &imm_expr); | |
9228 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
9229 | as_warn (_("Improper shift amount (%lu)"), |
9230 | (unsigned long) imm_expr.X_add_number); | |
9231 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9232 | imm_expr.X_op = O_absent; |
9233 | s = expr_end; | |
9234 | continue; | |
9235 | ||
9236 | case '>': /* shift amount minus 32 */ | |
9237 | my_getExpression (&imm_expr, s); | |
9238 | check_absolute_expr (ip, &imm_expr); | |
9239 | if ((unsigned long) imm_expr.X_add_number < 32 | |
9240 | || (unsigned long) imm_expr.X_add_number > 63) | |
9241 | break; | |
bf12938e | 9242 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number - 32); |
252b5132 RH |
9243 | imm_expr.X_op = O_absent; |
9244 | s = expr_end; | |
9245 | continue; | |
9246 | ||
252b5132 RH |
9247 | case 'k': /* cache code */ |
9248 | case 'h': /* prefx code */ | |
620edafd | 9249 | case '1': /* sync type */ |
252b5132 RH |
9250 | my_getExpression (&imm_expr, s); |
9251 | check_absolute_expr (ip, &imm_expr); | |
9252 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
9253 | as_warn (_("Invalid value for `%s' (%lu)"), |
9254 | ip->insn_mo->name, | |
9255 | (unsigned long) imm_expr.X_add_number); | |
252b5132 | 9256 | if (*args == 'k') |
bf12938e | 9257 | INSERT_OPERAND (CACHE, *ip, imm_expr.X_add_number); |
620edafd | 9258 | else if (*args == 'h') |
bf12938e | 9259 | INSERT_OPERAND (PREFX, *ip, imm_expr.X_add_number); |
620edafd CF |
9260 | else |
9261 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9262 | imm_expr.X_op = O_absent; |
9263 | s = expr_end; | |
9264 | continue; | |
9265 | ||
9266 | case 'c': /* break code */ | |
9267 | my_getExpression (&imm_expr, s); | |
9268 | check_absolute_expr (ip, &imm_expr); | |
a9e24354 TS |
9269 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE) |
9270 | as_warn (_("Code for %s not in range 0..1023 (%lu)"), | |
9271 | ip->insn_mo->name, | |
bf12938e RS |
9272 | (unsigned long) imm_expr.X_add_number); |
9273 | INSERT_OPERAND (CODE, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9274 | imm_expr.X_op = O_absent; |
9275 | s = expr_end; | |
9276 | continue; | |
9277 | ||
9278 | case 'q': /* lower break code */ | |
9279 | my_getExpression (&imm_expr, s); | |
9280 | check_absolute_expr (ip, &imm_expr); | |
a9e24354 TS |
9281 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE2) |
9282 | as_warn (_("Lower code for %s not in range 0..1023 (%lu)"), | |
9283 | ip->insn_mo->name, | |
bf12938e RS |
9284 | (unsigned long) imm_expr.X_add_number); |
9285 | INSERT_OPERAND (CODE2, *ip, imm_expr.X_add_number); | |
252b5132 RH |
9286 | imm_expr.X_op = O_absent; |
9287 | s = expr_end; | |
9288 | continue; | |
9289 | ||
4372b673 | 9290 | case 'B': /* 20-bit syscall/break code. */ |
156c2f8b | 9291 | my_getExpression (&imm_expr, s); |
156c2f8b | 9292 | check_absolute_expr (ip, &imm_expr); |
793b27f4 | 9293 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE20) |
a9e24354 TS |
9294 | as_warn (_("Code for %s not in range 0..1048575 (%lu)"), |
9295 | ip->insn_mo->name, | |
793b27f4 | 9296 | (unsigned long) imm_expr.X_add_number); |
bf12938e | 9297 | INSERT_OPERAND (CODE20, *ip, imm_expr.X_add_number); |
252b5132 RH |
9298 | imm_expr.X_op = O_absent; |
9299 | s = expr_end; | |
9300 | continue; | |
9301 | ||
98d3f06f | 9302 | case 'C': /* Coprocessor code */ |
beae10d5 | 9303 | my_getExpression (&imm_expr, s); |
252b5132 | 9304 | check_absolute_expr (ip, &imm_expr); |
a9e24354 | 9305 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_COPZ) |
252b5132 | 9306 | { |
793b27f4 TS |
9307 | as_warn (_("Coproccesor code > 25 bits (%lu)"), |
9308 | (unsigned long) imm_expr.X_add_number); | |
a9e24354 | 9309 | imm_expr.X_add_number &= OP_MASK_COPZ; |
252b5132 | 9310 | } |
a9e24354 | 9311 | INSERT_OPERAND (COPZ, *ip, imm_expr.X_add_number); |
beae10d5 KH |
9312 | imm_expr.X_op = O_absent; |
9313 | s = expr_end; | |
9314 | continue; | |
252b5132 | 9315 | |
4372b673 NC |
9316 | case 'J': /* 19-bit wait code. */ |
9317 | my_getExpression (&imm_expr, s); | |
9318 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 9319 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
a9e24354 TS |
9320 | { |
9321 | as_warn (_("Illegal 19-bit code (%lu)"), | |
9322 | (unsigned long) imm_expr.X_add_number); | |
9323 | imm_expr.X_add_number &= OP_MASK_CODE19; | |
9324 | } | |
bf12938e | 9325 | INSERT_OPERAND (CODE19, *ip, imm_expr.X_add_number); |
4372b673 NC |
9326 | imm_expr.X_op = O_absent; |
9327 | s = expr_end; | |
9328 | continue; | |
9329 | ||
707bfff6 | 9330 | case 'P': /* Performance register. */ |
beae10d5 | 9331 | my_getExpression (&imm_expr, s); |
252b5132 | 9332 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 9333 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
bf12938e RS |
9334 | as_warn (_("Invalid performance register (%lu)"), |
9335 | (unsigned long) imm_expr.X_add_number); | |
9336 | INSERT_OPERAND (PERFREG, *ip, imm_expr.X_add_number); | |
beae10d5 KH |
9337 | imm_expr.X_op = O_absent; |
9338 | s = expr_end; | |
9339 | continue; | |
252b5132 | 9340 | |
707bfff6 TS |
9341 | case 'G': /* Coprocessor destination register. */ |
9342 | if (((ip->insn_opcode >> OP_SH_OP) & OP_MASK_OP) == OP_OP_COP0) | |
9343 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_CP0, ®no); | |
9344 | else | |
9345 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
a9e24354 | 9346 | INSERT_OPERAND (RD, *ip, regno); |
707bfff6 TS |
9347 | if (ok) |
9348 | { | |
9349 | lastregno = regno; | |
9350 | continue; | |
9351 | } | |
9352 | else | |
9353 | break; | |
9354 | ||
252b5132 RH |
9355 | case 'b': /* base register */ |
9356 | case 'd': /* destination register */ | |
9357 | case 's': /* source register */ | |
9358 | case 't': /* target register */ | |
9359 | case 'r': /* both target and source */ | |
9360 | case 'v': /* both dest and source */ | |
9361 | case 'w': /* both dest and target */ | |
9362 | case 'E': /* coprocessor target register */ | |
af7ee8bf | 9363 | case 'K': /* 'rdhwr' destination register */ |
252b5132 RH |
9364 | case 'x': /* ignore register name */ |
9365 | case 'z': /* must be zero register */ | |
4372b673 | 9366 | case 'U': /* destination register (clo/clz). */ |
ef2e4d86 | 9367 | case 'g': /* coprocessor destination register */ |
707bfff6 TS |
9368 | s_reset = s; |
9369 | if (*args == 'E' || *args == 'K') | |
9370 | ok = reg_lookup (&s, RTYPE_NUM, ®no); | |
9371 | else | |
9372 | { | |
9373 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
741fe287 MR |
9374 | if (regno == AT && mips_opts.at) |
9375 | { | |
9376 | if (mips_opts.at == ATREG) | |
9377 | as_warn (_("used $at without \".set noat\"")); | |
9378 | else | |
9379 | as_warn (_("used $%u with \".set at=$%u\""), | |
9380 | regno, mips_opts.at); | |
9381 | } | |
707bfff6 TS |
9382 | } |
9383 | if (ok) | |
252b5132 | 9384 | { |
252b5132 RH |
9385 | c = *args; |
9386 | if (*s == ' ') | |
f9419b05 | 9387 | ++s; |
252b5132 RH |
9388 | if (args[1] != *s) |
9389 | { | |
9390 | if (c == 'r' || c == 'v' || c == 'w') | |
9391 | { | |
9392 | regno = lastregno; | |
9393 | s = s_reset; | |
f9419b05 | 9394 | ++args; |
252b5132 RH |
9395 | } |
9396 | } | |
9397 | /* 'z' only matches $0. */ | |
9398 | if (c == 'z' && regno != 0) | |
9399 | break; | |
9400 | ||
24864476 | 9401 | if (c == 's' && !strncmp (ip->insn_mo->name, "jalr", 4)) |
e7c604dd CM |
9402 | { |
9403 | if (regno == lastregno) | |
9404 | { | |
24864476 | 9405 | insn_error = _("source and destination must be different"); |
e7c604dd CM |
9406 | continue; |
9407 | } | |
24864476 | 9408 | if (regno == 31 && lastregno == 0xffffffff) |
e7c604dd CM |
9409 | { |
9410 | insn_error = _("a destination register must be supplied"); | |
9411 | continue; | |
9412 | } | |
9413 | } | |
bdaaa2e1 KH |
9414 | /* Now that we have assembled one operand, we use the args string |
9415 | * to figure out where it goes in the instruction. */ | |
252b5132 RH |
9416 | switch (c) |
9417 | { | |
9418 | case 'r': | |
9419 | case 's': | |
9420 | case 'v': | |
9421 | case 'b': | |
bf12938e | 9422 | INSERT_OPERAND (RS, *ip, regno); |
252b5132 RH |
9423 | break; |
9424 | case 'd': | |
9425 | case 'G': | |
af7ee8bf | 9426 | case 'K': |
ef2e4d86 | 9427 | case 'g': |
bf12938e | 9428 | INSERT_OPERAND (RD, *ip, regno); |
252b5132 | 9429 | break; |
4372b673 | 9430 | case 'U': |
bf12938e RS |
9431 | INSERT_OPERAND (RD, *ip, regno); |
9432 | INSERT_OPERAND (RT, *ip, regno); | |
4372b673 | 9433 | break; |
252b5132 RH |
9434 | case 'w': |
9435 | case 't': | |
9436 | case 'E': | |
bf12938e | 9437 | INSERT_OPERAND (RT, *ip, regno); |
252b5132 RH |
9438 | break; |
9439 | case 'x': | |
9440 | /* This case exists because on the r3000 trunc | |
9441 | expands into a macro which requires a gp | |
9442 | register. On the r6000 or r4000 it is | |
9443 | assembled into a single instruction which | |
9444 | ignores the register. Thus the insn version | |
9445 | is MIPS_ISA2 and uses 'x', and the macro | |
9446 | version is MIPS_ISA1 and uses 't'. */ | |
9447 | break; | |
9448 | case 'z': | |
9449 | /* This case is for the div instruction, which | |
9450 | acts differently if the destination argument | |
9451 | is $0. This only matches $0, and is checked | |
9452 | outside the switch. */ | |
9453 | break; | |
9454 | case 'D': | |
9455 | /* Itbl operand; not yet implemented. FIXME ?? */ | |
9456 | break; | |
9457 | /* What about all other operands like 'i', which | |
9458 | can be specified in the opcode table? */ | |
9459 | } | |
9460 | lastregno = regno; | |
9461 | continue; | |
9462 | } | |
252b5132 RH |
9463 | switch (*args++) |
9464 | { | |
9465 | case 'r': | |
9466 | case 'v': | |
bf12938e | 9467 | INSERT_OPERAND (RS, *ip, lastregno); |
252b5132 RH |
9468 | continue; |
9469 | case 'w': | |
bf12938e | 9470 | INSERT_OPERAND (RT, *ip, lastregno); |
252b5132 RH |
9471 | continue; |
9472 | } | |
9473 | break; | |
9474 | ||
deec1734 CD |
9475 | case 'O': /* MDMX alignment immediate constant. */ |
9476 | my_getExpression (&imm_expr, s); | |
9477 | check_absolute_expr (ip, &imm_expr); | |
9478 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
bf12938e RS |
9479 | as_warn ("Improper align amount (%ld), using low bits", |
9480 | (long) imm_expr.X_add_number); | |
9481 | INSERT_OPERAND (ALN, *ip, imm_expr.X_add_number); | |
deec1734 CD |
9482 | imm_expr.X_op = O_absent; |
9483 | s = expr_end; | |
9484 | continue; | |
9485 | ||
9486 | case 'Q': /* MDMX vector, element sel, or const. */ | |
9487 | if (s[0] != '$') | |
9488 | { | |
9489 | /* MDMX Immediate. */ | |
9490 | my_getExpression (&imm_expr, s); | |
9491 | check_absolute_expr (ip, &imm_expr); | |
9492 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
bf12938e RS |
9493 | as_warn (_("Invalid MDMX Immediate (%ld)"), |
9494 | (long) imm_expr.X_add_number); | |
9495 | INSERT_OPERAND (FT, *ip, imm_expr.X_add_number); | |
deec1734 CD |
9496 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) |
9497 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
9498 | else | |
9499 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
deec1734 CD |
9500 | imm_expr.X_op = O_absent; |
9501 | s = expr_end; | |
9502 | continue; | |
9503 | } | |
9504 | /* Not MDMX Immediate. Fall through. */ | |
9505 | case 'X': /* MDMX destination register. */ | |
9506 | case 'Y': /* MDMX source register. */ | |
9507 | case 'Z': /* MDMX target register. */ | |
9508 | is_mdmx = 1; | |
252b5132 RH |
9509 | case 'D': /* floating point destination register */ |
9510 | case 'S': /* floating point source register */ | |
9511 | case 'T': /* floating point target register */ | |
9512 | case 'R': /* floating point source register */ | |
9513 | case 'V': | |
9514 | case 'W': | |
707bfff6 TS |
9515 | rtype = RTYPE_FPU; |
9516 | if (is_mdmx | |
9517 | || (mips_opts.ase_mdmx | |
9518 | && (ip->insn_mo->pinfo & FP_D) | |
9519 | && (ip->insn_mo->pinfo & (INSN_COPROC_MOVE_DELAY | |
9520 | | INSN_COPROC_MEMORY_DELAY | |
9521 | | INSN_LOAD_COPROC_DELAY | |
9522 | | INSN_LOAD_MEMORY_DELAY | |
9523 | | INSN_STORE_MEMORY)))) | |
9524 | rtype |= RTYPE_VEC; | |
252b5132 | 9525 | s_reset = s; |
707bfff6 | 9526 | if (reg_lookup (&s, rtype, ®no)) |
252b5132 | 9527 | { |
252b5132 | 9528 | if ((regno & 1) != 0 |
ca4e0257 | 9529 | && HAVE_32BIT_FPRS |
7455baf8 | 9530 | && ! mips_oddfpreg_ok (ip->insn_mo, argnum)) |
252b5132 RH |
9531 | as_warn (_("Float register should be even, was %d"), |
9532 | regno); | |
9533 | ||
9534 | c = *args; | |
9535 | if (*s == ' ') | |
f9419b05 | 9536 | ++s; |
252b5132 RH |
9537 | if (args[1] != *s) |
9538 | { | |
9539 | if (c == 'V' || c == 'W') | |
9540 | { | |
9541 | regno = lastregno; | |
9542 | s = s_reset; | |
f9419b05 | 9543 | ++args; |
252b5132 RH |
9544 | } |
9545 | } | |
9546 | switch (c) | |
9547 | { | |
9548 | case 'D': | |
deec1734 | 9549 | case 'X': |
bf12938e | 9550 | INSERT_OPERAND (FD, *ip, regno); |
252b5132 RH |
9551 | break; |
9552 | case 'V': | |
9553 | case 'S': | |
deec1734 | 9554 | case 'Y': |
bf12938e | 9555 | INSERT_OPERAND (FS, *ip, regno); |
252b5132 | 9556 | break; |
deec1734 CD |
9557 | case 'Q': |
9558 | /* This is like 'Z', but also needs to fix the MDMX | |
9559 | vector/scalar select bits. Note that the | |
9560 | scalar immediate case is handled above. */ | |
9561 | if (*s == '[') | |
9562 | { | |
9563 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
9564 | int max_el = (is_qh ? 3 : 7); | |
9565 | s++; | |
9566 | my_getExpression(&imm_expr, s); | |
9567 | check_absolute_expr (ip, &imm_expr); | |
9568 | s = expr_end; | |
9569 | if (imm_expr.X_add_number > max_el) | |
9570 | as_bad(_("Bad element selector %ld"), | |
9571 | (long) imm_expr.X_add_number); | |
9572 | imm_expr.X_add_number &= max_el; | |
9573 | ip->insn_opcode |= (imm_expr.X_add_number | |
9574 | << (OP_SH_VSEL + | |
9575 | (is_qh ? 2 : 1))); | |
01a3f561 | 9576 | imm_expr.X_op = O_absent; |
deec1734 CD |
9577 | if (*s != ']') |
9578 | as_warn(_("Expecting ']' found '%s'"), s); | |
9579 | else | |
9580 | s++; | |
9581 | } | |
9582 | else | |
9583 | { | |
9584 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
9585 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
9586 | << OP_SH_VSEL); | |
9587 | else | |
9588 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
9589 | OP_SH_VSEL); | |
9590 | } | |
9591 | /* Fall through */ | |
252b5132 RH |
9592 | case 'W': |
9593 | case 'T': | |
deec1734 | 9594 | case 'Z': |
bf12938e | 9595 | INSERT_OPERAND (FT, *ip, regno); |
252b5132 RH |
9596 | break; |
9597 | case 'R': | |
bf12938e | 9598 | INSERT_OPERAND (FR, *ip, regno); |
252b5132 RH |
9599 | break; |
9600 | } | |
9601 | lastregno = regno; | |
9602 | continue; | |
9603 | } | |
9604 | ||
252b5132 RH |
9605 | switch (*args++) |
9606 | { | |
9607 | case 'V': | |
bf12938e | 9608 | INSERT_OPERAND (FS, *ip, lastregno); |
252b5132 RH |
9609 | continue; |
9610 | case 'W': | |
bf12938e | 9611 | INSERT_OPERAND (FT, *ip, lastregno); |
252b5132 RH |
9612 | continue; |
9613 | } | |
9614 | break; | |
9615 | ||
9616 | case 'I': | |
9617 | my_getExpression (&imm_expr, s); | |
9618 | if (imm_expr.X_op != O_big | |
9619 | && imm_expr.X_op != O_constant) | |
9620 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
9621 | if (HAVE_32BIT_GPRS) |
9622 | normalize_constant_expr (&imm_expr); | |
252b5132 RH |
9623 | s = expr_end; |
9624 | continue; | |
9625 | ||
9626 | case 'A': | |
9627 | my_getExpression (&offset_expr, s); | |
2051e8c4 | 9628 | normalize_address_expr (&offset_expr); |
f6688943 | 9629 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
9630 | s = expr_end; |
9631 | continue; | |
9632 | ||
9633 | case 'F': | |
9634 | case 'L': | |
9635 | case 'f': | |
9636 | case 'l': | |
9637 | { | |
9638 | int f64; | |
ca4e0257 | 9639 | int using_gprs; |
252b5132 RH |
9640 | char *save_in; |
9641 | char *err; | |
9642 | unsigned char temp[8]; | |
9643 | int len; | |
9644 | unsigned int length; | |
9645 | segT seg; | |
9646 | subsegT subseg; | |
9647 | char *p; | |
9648 | ||
9649 | /* These only appear as the last operand in an | |
9650 | instruction, and every instruction that accepts | |
9651 | them in any variant accepts them in all variants. | |
9652 | This means we don't have to worry about backing out | |
9653 | any changes if the instruction does not match. | |
9654 | ||
9655 | The difference between them is the size of the | |
9656 | floating point constant and where it goes. For 'F' | |
9657 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
9658 | is 32 bits. Where the constant is placed is based | |
9659 | on how the MIPS assembler does things: | |
9660 | F -- .rdata | |
9661 | L -- .lit8 | |
9662 | f -- immediate value | |
9663 | l -- .lit4 | |
9664 | ||
9665 | The .lit4 and .lit8 sections are only used if | |
9666 | permitted by the -G argument. | |
9667 | ||
ca4e0257 RS |
9668 | The code below needs to know whether the target register |
9669 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
9670 | 'F' are used with GPR-based instructions and 'l' and | |
9671 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
9672 | |
9673 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 9674 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
9675 | |
9676 | save_in = input_line_pointer; | |
9677 | input_line_pointer = s; | |
9678 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
9679 | length = len; | |
9680 | s = input_line_pointer; | |
9681 | input_line_pointer = save_in; | |
9682 | if (err != NULL && *err != '\0') | |
9683 | { | |
9684 | as_bad (_("Bad floating point constant: %s"), err); | |
9685 | memset (temp, '\0', sizeof temp); | |
9686 | length = f64 ? 8 : 4; | |
9687 | } | |
9688 | ||
156c2f8b | 9689 | assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
9690 | |
9691 | if (*args == 'f' | |
9692 | || (*args == 'l' | |
3e722fb5 | 9693 | && (g_switch_value < 4 |
252b5132 RH |
9694 | || (temp[0] == 0 && temp[1] == 0) |
9695 | || (temp[2] == 0 && temp[3] == 0)))) | |
9696 | { | |
9697 | imm_expr.X_op = O_constant; | |
9698 | if (! target_big_endian) | |
9699 | imm_expr.X_add_number = bfd_getl32 (temp); | |
9700 | else | |
9701 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9702 | } | |
9703 | else if (length > 4 | |
119d663a | 9704 | && ! mips_disable_float_construction |
ca4e0257 RS |
9705 | /* Constants can only be constructed in GPRs and |
9706 | copied to FPRs if the GPRs are at least as wide | |
9707 | as the FPRs. Force the constant into memory if | |
9708 | we are using 64-bit FPRs but the GPRs are only | |
9709 | 32 bits wide. */ | |
9710 | && (using_gprs | |
9711 | || ! (HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) | |
252b5132 RH |
9712 | && ((temp[0] == 0 && temp[1] == 0) |
9713 | || (temp[2] == 0 && temp[3] == 0)) | |
9714 | && ((temp[4] == 0 && temp[5] == 0) | |
9715 | || (temp[6] == 0 && temp[7] == 0))) | |
9716 | { | |
ca4e0257 RS |
9717 | /* The value is simple enough to load with a couple of |
9718 | instructions. If using 32-bit registers, set | |
9719 | imm_expr to the high order 32 bits and offset_expr to | |
9720 | the low order 32 bits. Otherwise, set imm_expr to | |
9721 | the entire 64 bit constant. */ | |
9722 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) | |
252b5132 RH |
9723 | { |
9724 | imm_expr.X_op = O_constant; | |
9725 | offset_expr.X_op = O_constant; | |
9726 | if (! target_big_endian) | |
9727 | { | |
9728 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
9729 | offset_expr.X_add_number = bfd_getl32 (temp); | |
9730 | } | |
9731 | else | |
9732 | { | |
9733 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9734 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
9735 | } | |
9736 | if (offset_expr.X_add_number == 0) | |
9737 | offset_expr.X_op = O_absent; | |
9738 | } | |
9739 | else if (sizeof (imm_expr.X_add_number) > 4) | |
9740 | { | |
9741 | imm_expr.X_op = O_constant; | |
9742 | if (! target_big_endian) | |
9743 | imm_expr.X_add_number = bfd_getl64 (temp); | |
9744 | else | |
9745 | imm_expr.X_add_number = bfd_getb64 (temp); | |
9746 | } | |
9747 | else | |
9748 | { | |
9749 | imm_expr.X_op = O_big; | |
9750 | imm_expr.X_add_number = 4; | |
9751 | if (! target_big_endian) | |
9752 | { | |
9753 | generic_bignum[0] = bfd_getl16 (temp); | |
9754 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
9755 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
9756 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
9757 | } | |
9758 | else | |
9759 | { | |
9760 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
9761 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
9762 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
9763 | generic_bignum[3] = bfd_getb16 (temp); | |
9764 | } | |
9765 | } | |
9766 | } | |
9767 | else | |
9768 | { | |
9769 | const char *newname; | |
9770 | segT new_seg; | |
9771 | ||
9772 | /* Switch to the right section. */ | |
9773 | seg = now_seg; | |
9774 | subseg = now_subseg; | |
9775 | switch (*args) | |
9776 | { | |
9777 | default: /* unused default case avoids warnings. */ | |
9778 | case 'L': | |
9779 | newname = RDATA_SECTION_NAME; | |
3e722fb5 | 9780 | if (g_switch_value >= 8) |
252b5132 RH |
9781 | newname = ".lit8"; |
9782 | break; | |
9783 | case 'F': | |
3e722fb5 | 9784 | newname = RDATA_SECTION_NAME; |
252b5132 RH |
9785 | break; |
9786 | case 'l': | |
4d0d148d | 9787 | assert (g_switch_value >= 4); |
252b5132 RH |
9788 | newname = ".lit4"; |
9789 | break; | |
9790 | } | |
9791 | new_seg = subseg_new (newname, (subsegT) 0); | |
f43abd2b | 9792 | if (IS_ELF) |
252b5132 RH |
9793 | bfd_set_section_flags (stdoutput, new_seg, |
9794 | (SEC_ALLOC | |
9795 | | SEC_LOAD | |
9796 | | SEC_READONLY | |
9797 | | SEC_DATA)); | |
9798 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
c41e87e3 | 9799 | if (IS_ELF && strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
9800 | record_alignment (new_seg, 4); |
9801 | else | |
9802 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
9803 | if (seg == now_seg) | |
9804 | as_bad (_("Can't use floating point insn in this section")); | |
9805 | ||
9806 | /* Set the argument to the current address in the | |
9807 | section. */ | |
9808 | offset_expr.X_op = O_symbol; | |
9809 | offset_expr.X_add_symbol = | |
9810 | symbol_new ("L0\001", now_seg, | |
9811 | (valueT) frag_now_fix (), frag_now); | |
9812 | offset_expr.X_add_number = 0; | |
9813 | ||
9814 | /* Put the floating point number into the section. */ | |
9815 | p = frag_more ((int) length); | |
9816 | memcpy (p, temp, length); | |
9817 | ||
9818 | /* Switch back to the original section. */ | |
9819 | subseg_set (seg, subseg); | |
9820 | } | |
9821 | } | |
9822 | continue; | |
9823 | ||
9824 | case 'i': /* 16 bit unsigned immediate */ | |
9825 | case 'j': /* 16 bit signed immediate */ | |
f6688943 | 9826 | *imm_reloc = BFD_RELOC_LO16; |
5e0116d5 | 9827 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0) |
252b5132 RH |
9828 | { |
9829 | int more; | |
5e0116d5 RS |
9830 | offsetT minval, maxval; |
9831 | ||
9832 | more = (insn + 1 < &mips_opcodes[NUMOPCODES] | |
9833 | && strcmp (insn->name, insn[1].name) == 0); | |
9834 | ||
9835 | /* If the expression was written as an unsigned number, | |
9836 | only treat it as signed if there are no more | |
9837 | alternatives. */ | |
9838 | if (more | |
9839 | && *args == 'j' | |
9840 | && sizeof (imm_expr.X_add_number) <= 4 | |
9841 | && imm_expr.X_op == O_constant | |
9842 | && imm_expr.X_add_number < 0 | |
9843 | && imm_expr.X_unsigned | |
9844 | && HAVE_64BIT_GPRS) | |
9845 | break; | |
9846 | ||
9847 | /* For compatibility with older assemblers, we accept | |
9848 | 0x8000-0xffff as signed 16-bit numbers when only | |
9849 | signed numbers are allowed. */ | |
9850 | if (*args == 'i') | |
9851 | minval = 0, maxval = 0xffff; | |
9852 | else if (more) | |
9853 | minval = -0x8000, maxval = 0x7fff; | |
252b5132 | 9854 | else |
5e0116d5 RS |
9855 | minval = -0x8000, maxval = 0xffff; |
9856 | ||
9857 | if (imm_expr.X_op != O_constant | |
9858 | || imm_expr.X_add_number < minval | |
9859 | || imm_expr.X_add_number > maxval) | |
252b5132 RH |
9860 | { |
9861 | if (more) | |
9862 | break; | |
2ae7e77b AH |
9863 | if (imm_expr.X_op == O_constant |
9864 | || imm_expr.X_op == O_big) | |
5e0116d5 | 9865 | as_bad (_("expression out of range")); |
252b5132 RH |
9866 | } |
9867 | } | |
9868 | s = expr_end; | |
9869 | continue; | |
9870 | ||
9871 | case 'o': /* 16 bit offset */ | |
5e0116d5 RS |
9872 | /* Check whether there is only a single bracketed expression |
9873 | left. If so, it must be the base register and the | |
9874 | constant must be zero. */ | |
9875 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
9876 | { | |
9877 | offset_expr.X_op = O_constant; | |
9878 | offset_expr.X_add_number = 0; | |
9879 | continue; | |
9880 | } | |
252b5132 RH |
9881 | |
9882 | /* If this value won't fit into a 16 bit offset, then go | |
9883 | find a macro that will generate the 32 bit offset | |
afdbd6d0 | 9884 | code pattern. */ |
5e0116d5 | 9885 | if (my_getSmallExpression (&offset_expr, offset_reloc, s) == 0 |
252b5132 RH |
9886 | && (offset_expr.X_op != O_constant |
9887 | || offset_expr.X_add_number >= 0x8000 | |
afdbd6d0 | 9888 | || offset_expr.X_add_number < -0x8000)) |
252b5132 RH |
9889 | break; |
9890 | ||
252b5132 RH |
9891 | s = expr_end; |
9892 | continue; | |
9893 | ||
9894 | case 'p': /* pc relative offset */ | |
0b25d3e6 | 9895 | *offset_reloc = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
9896 | my_getExpression (&offset_expr, s); |
9897 | s = expr_end; | |
9898 | continue; | |
9899 | ||
9900 | case 'u': /* upper 16 bits */ | |
5e0116d5 RS |
9901 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0 |
9902 | && imm_expr.X_op == O_constant | |
9903 | && (imm_expr.X_add_number < 0 | |
9904 | || imm_expr.X_add_number >= 0x10000)) | |
252b5132 RH |
9905 | as_bad (_("lui expression not in range 0..65535")); |
9906 | s = expr_end; | |
9907 | continue; | |
9908 | ||
9909 | case 'a': /* 26 bit address */ | |
9910 | my_getExpression (&offset_expr, s); | |
9911 | s = expr_end; | |
f6688943 | 9912 | *offset_reloc = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
9913 | continue; |
9914 | ||
9915 | case 'N': /* 3 bit branch condition code */ | |
9916 | case 'M': /* 3 bit compare condition code */ | |
707bfff6 TS |
9917 | rtype = RTYPE_CCC; |
9918 | if (ip->insn_mo->pinfo & (FP_D| FP_S)) | |
9919 | rtype |= RTYPE_FCC; | |
9920 | if (!reg_lookup (&s, rtype, ®no)) | |
252b5132 | 9921 | break; |
30c378fd CD |
9922 | if ((strcmp(str + strlen(str) - 3, ".ps") == 0 |
9923 | || strcmp(str + strlen(str) - 5, "any2f") == 0 | |
9924 | || strcmp(str + strlen(str) - 5, "any2t") == 0) | |
9925 | && (regno & 1) != 0) | |
9926 | as_warn(_("Condition code register should be even for %s, was %d"), | |
9927 | str, regno); | |
9928 | if ((strcmp(str + strlen(str) - 5, "any4f") == 0 | |
9929 | || strcmp(str + strlen(str) - 5, "any4t") == 0) | |
9930 | && (regno & 3) != 0) | |
9931 | as_warn(_("Condition code register should be 0 or 4 for %s, was %d"), | |
9932 | str, regno); | |
252b5132 | 9933 | if (*args == 'N') |
bf12938e | 9934 | INSERT_OPERAND (BCC, *ip, regno); |
252b5132 | 9935 | else |
bf12938e | 9936 | INSERT_OPERAND (CCC, *ip, regno); |
beae10d5 | 9937 | continue; |
252b5132 | 9938 | |
156c2f8b NC |
9939 | case 'H': |
9940 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
9941 | s += 2; | |
3882b010 | 9942 | if (ISDIGIT (*s)) |
156c2f8b NC |
9943 | { |
9944 | c = 0; | |
9945 | do | |
9946 | { | |
9947 | c *= 10; | |
9948 | c += *s - '0'; | |
9949 | ++s; | |
9950 | } | |
3882b010 | 9951 | while (ISDIGIT (*s)); |
156c2f8b NC |
9952 | } |
9953 | else | |
9954 | c = 8; /* Invalid sel value. */ | |
9955 | ||
9956 | if (c > 7) | |
9957 | as_bad (_("invalid coprocessor sub-selection value (0-7)")); | |
9958 | ip->insn_opcode |= c; | |
9959 | continue; | |
9960 | ||
60b63b72 RS |
9961 | case 'e': |
9962 | /* Must be at least one digit. */ | |
9963 | my_getExpression (&imm_expr, s); | |
9964 | check_absolute_expr (ip, &imm_expr); | |
9965 | ||
9966 | if ((unsigned long) imm_expr.X_add_number | |
9967 | > (unsigned long) OP_MASK_VECBYTE) | |
9968 | { | |
9969 | as_bad (_("bad byte vector index (%ld)"), | |
9970 | (long) imm_expr.X_add_number); | |
9971 | imm_expr.X_add_number = 0; | |
9972 | } | |
9973 | ||
bf12938e | 9974 | INSERT_OPERAND (VECBYTE, *ip, imm_expr.X_add_number); |
60b63b72 RS |
9975 | imm_expr.X_op = O_absent; |
9976 | s = expr_end; | |
9977 | continue; | |
9978 | ||
9979 | case '%': | |
9980 | my_getExpression (&imm_expr, s); | |
9981 | check_absolute_expr (ip, &imm_expr); | |
9982 | ||
9983 | if ((unsigned long) imm_expr.X_add_number | |
9984 | > (unsigned long) OP_MASK_VECALIGN) | |
9985 | { | |
9986 | as_bad (_("bad byte vector index (%ld)"), | |
9987 | (long) imm_expr.X_add_number); | |
9988 | imm_expr.X_add_number = 0; | |
9989 | } | |
9990 | ||
bf12938e | 9991 | INSERT_OPERAND (VECALIGN, *ip, imm_expr.X_add_number); |
60b63b72 RS |
9992 | imm_expr.X_op = O_absent; |
9993 | s = expr_end; | |
9994 | continue; | |
9995 | ||
252b5132 RH |
9996 | default: |
9997 | as_bad (_("bad char = '%c'\n"), *args); | |
9998 | internalError (); | |
9999 | } | |
10000 | break; | |
10001 | } | |
10002 | /* Args don't match. */ | |
10003 | if (insn + 1 < &mips_opcodes[NUMOPCODES] && | |
10004 | !strcmp (insn->name, insn[1].name)) | |
10005 | { | |
10006 | ++insn; | |
10007 | s = argsStart; | |
268f6bed | 10008 | insn_error = _("illegal operands"); |
252b5132 RH |
10009 | continue; |
10010 | } | |
268f6bed | 10011 | if (save_c) |
570de991 | 10012 | *(--argsStart) = save_c; |
252b5132 RH |
10013 | insn_error = _("illegal operands"); |
10014 | return; | |
10015 | } | |
10016 | } | |
10017 | ||
0499d65b TS |
10018 | #define SKIP_SPACE_TABS(S) { while (*(S) == ' ' || *(S) == '\t') ++(S); } |
10019 | ||
252b5132 RH |
10020 | /* This routine assembles an instruction into its binary format when |
10021 | assembling for the mips16. As a side effect, it sets one of the | |
10022 | global variables imm_reloc or offset_reloc to the type of | |
10023 | relocation to do if one of the operands is an address expression. | |
10024 | It also sets mips16_small and mips16_ext if the user explicitly | |
10025 | requested a small or extended instruction. */ | |
10026 | ||
10027 | static void | |
17a2f251 | 10028 | mips16_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
10029 | { |
10030 | char *s; | |
10031 | const char *args; | |
10032 | struct mips_opcode *insn; | |
10033 | char *argsstart; | |
10034 | unsigned int regno; | |
10035 | unsigned int lastregno = 0; | |
10036 | char *s_reset; | |
d6f16593 | 10037 | size_t i; |
252b5132 RH |
10038 | |
10039 | insn_error = NULL; | |
10040 | ||
b34976b6 AM |
10041 | mips16_small = FALSE; |
10042 | mips16_ext = FALSE; | |
252b5132 | 10043 | |
3882b010 | 10044 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
10045 | ; |
10046 | switch (*s) | |
10047 | { | |
10048 | case '\0': | |
10049 | break; | |
10050 | ||
10051 | case ' ': | |
10052 | *s++ = '\0'; | |
10053 | break; | |
10054 | ||
10055 | case '.': | |
10056 | if (s[1] == 't' && s[2] == ' ') | |
10057 | { | |
10058 | *s = '\0'; | |
b34976b6 | 10059 | mips16_small = TRUE; |
252b5132 RH |
10060 | s += 3; |
10061 | break; | |
10062 | } | |
10063 | else if (s[1] == 'e' && s[2] == ' ') | |
10064 | { | |
10065 | *s = '\0'; | |
b34976b6 | 10066 | mips16_ext = TRUE; |
252b5132 RH |
10067 | s += 3; |
10068 | break; | |
10069 | } | |
10070 | /* Fall through. */ | |
10071 | default: | |
10072 | insn_error = _("unknown opcode"); | |
10073 | return; | |
10074 | } | |
10075 | ||
10076 | if (mips_opts.noautoextend && ! mips16_ext) | |
b34976b6 | 10077 | mips16_small = TRUE; |
252b5132 RH |
10078 | |
10079 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
10080 | { | |
10081 | insn_error = _("unrecognized opcode"); | |
10082 | return; | |
10083 | } | |
10084 | ||
10085 | argsstart = s; | |
10086 | for (;;) | |
10087 | { | |
9b3f89ee TS |
10088 | bfd_boolean ok; |
10089 | ||
252b5132 RH |
10090 | assert (strcmp (insn->name, str) == 0); |
10091 | ||
037b32b9 | 10092 | ok = is_opcode_valid_16 (insn); |
9b3f89ee TS |
10093 | if (! ok) |
10094 | { | |
10095 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] | |
10096 | && strcmp (insn->name, insn[1].name) == 0) | |
10097 | { | |
10098 | ++insn; | |
10099 | continue; | |
10100 | } | |
10101 | else | |
10102 | { | |
10103 | if (!insn_error) | |
10104 | { | |
10105 | static char buf[100]; | |
10106 | sprintf (buf, | |
10107 | _("opcode not supported on this processor: %s (%s)"), | |
10108 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
10109 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
10110 | insn_error = buf; | |
10111 | } | |
10112 | return; | |
10113 | } | |
10114 | } | |
10115 | ||
1e915849 | 10116 | create_insn (ip, insn); |
252b5132 | 10117 | imm_expr.X_op = O_absent; |
f6688943 TS |
10118 | imm_reloc[0] = BFD_RELOC_UNUSED; |
10119 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
10120 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
5f74bc13 | 10121 | imm2_expr.X_op = O_absent; |
252b5132 | 10122 | offset_expr.X_op = O_absent; |
f6688943 TS |
10123 | offset_reloc[0] = BFD_RELOC_UNUSED; |
10124 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
10125 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
10126 | for (args = insn->args; 1; ++args) |
10127 | { | |
10128 | int c; | |
10129 | ||
10130 | if (*s == ' ') | |
10131 | ++s; | |
10132 | ||
10133 | /* In this switch statement we call break if we did not find | |
10134 | a match, continue if we did find a match, or return if we | |
10135 | are done. */ | |
10136 | ||
10137 | c = *args; | |
10138 | switch (c) | |
10139 | { | |
10140 | case '\0': | |
10141 | if (*s == '\0') | |
10142 | { | |
10143 | /* Stuff the immediate value in now, if we can. */ | |
10144 | if (imm_expr.X_op == O_constant | |
f6688943 | 10145 | && *imm_reloc > BFD_RELOC_UNUSED |
738e5348 RS |
10146 | && *imm_reloc != BFD_RELOC_MIPS16_GOT16 |
10147 | && *imm_reloc != BFD_RELOC_MIPS16_CALL16 | |
252b5132 RH |
10148 | && insn->pinfo != INSN_MACRO) |
10149 | { | |
d6f16593 MR |
10150 | valueT tmp; |
10151 | ||
10152 | switch (*offset_reloc) | |
10153 | { | |
10154 | case BFD_RELOC_MIPS16_HI16_S: | |
10155 | tmp = (imm_expr.X_add_number + 0x8000) >> 16; | |
10156 | break; | |
10157 | ||
10158 | case BFD_RELOC_MIPS16_HI16: | |
10159 | tmp = imm_expr.X_add_number >> 16; | |
10160 | break; | |
10161 | ||
10162 | case BFD_RELOC_MIPS16_LO16: | |
10163 | tmp = ((imm_expr.X_add_number + 0x8000) & 0xffff) | |
10164 | - 0x8000; | |
10165 | break; | |
10166 | ||
10167 | case BFD_RELOC_UNUSED: | |
10168 | tmp = imm_expr.X_add_number; | |
10169 | break; | |
10170 | ||
10171 | default: | |
10172 | internalError (); | |
10173 | } | |
10174 | *offset_reloc = BFD_RELOC_UNUSED; | |
10175 | ||
c4e7957c | 10176 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
d6f16593 | 10177 | tmp, TRUE, mips16_small, |
252b5132 RH |
10178 | mips16_ext, &ip->insn_opcode, |
10179 | &ip->use_extend, &ip->extend); | |
10180 | imm_expr.X_op = O_absent; | |
f6688943 | 10181 | *imm_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
10182 | } |
10183 | ||
10184 | return; | |
10185 | } | |
10186 | break; | |
10187 | ||
10188 | case ',': | |
10189 | if (*s++ == c) | |
10190 | continue; | |
10191 | s--; | |
10192 | switch (*++args) | |
10193 | { | |
10194 | case 'v': | |
bf12938e | 10195 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 RH |
10196 | continue; |
10197 | case 'w': | |
bf12938e | 10198 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
10199 | continue; |
10200 | } | |
10201 | break; | |
10202 | ||
10203 | case '(': | |
10204 | case ')': | |
10205 | if (*s++ == c) | |
10206 | continue; | |
10207 | break; | |
10208 | ||
10209 | case 'v': | |
10210 | case 'w': | |
10211 | if (s[0] != '$') | |
10212 | { | |
10213 | if (c == 'v') | |
bf12938e | 10214 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 | 10215 | else |
bf12938e | 10216 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
10217 | ++args; |
10218 | continue; | |
10219 | } | |
10220 | /* Fall through. */ | |
10221 | case 'x': | |
10222 | case 'y': | |
10223 | case 'z': | |
10224 | case 'Z': | |
10225 | case '0': | |
10226 | case 'S': | |
10227 | case 'R': | |
10228 | case 'X': | |
10229 | case 'Y': | |
707bfff6 TS |
10230 | s_reset = s; |
10231 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) | |
252b5132 | 10232 | { |
707bfff6 | 10233 | if (c == 'v' || c == 'w') |
85b51719 | 10234 | { |
707bfff6 | 10235 | if (c == 'v') |
a9e24354 | 10236 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
707bfff6 | 10237 | else |
a9e24354 | 10238 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
707bfff6 TS |
10239 | ++args; |
10240 | continue; | |
85b51719 | 10241 | } |
707bfff6 | 10242 | break; |
252b5132 RH |
10243 | } |
10244 | ||
10245 | if (*s == ' ') | |
10246 | ++s; | |
10247 | if (args[1] != *s) | |
10248 | { | |
10249 | if (c == 'v' || c == 'w') | |
10250 | { | |
10251 | regno = mips16_to_32_reg_map[lastregno]; | |
10252 | s = s_reset; | |
f9419b05 | 10253 | ++args; |
252b5132 RH |
10254 | } |
10255 | } | |
10256 | ||
10257 | switch (c) | |
10258 | { | |
10259 | case 'x': | |
10260 | case 'y': | |
10261 | case 'z': | |
10262 | case 'v': | |
10263 | case 'w': | |
10264 | case 'Z': | |
10265 | regno = mips32_to_16_reg_map[regno]; | |
10266 | break; | |
10267 | ||
10268 | case '0': | |
10269 | if (regno != 0) | |
10270 | regno = ILLEGAL_REG; | |
10271 | break; | |
10272 | ||
10273 | case 'S': | |
10274 | if (regno != SP) | |
10275 | regno = ILLEGAL_REG; | |
10276 | break; | |
10277 | ||
10278 | case 'R': | |
10279 | if (regno != RA) | |
10280 | regno = ILLEGAL_REG; | |
10281 | break; | |
10282 | ||
10283 | case 'X': | |
10284 | case 'Y': | |
741fe287 MR |
10285 | if (regno == AT && mips_opts.at) |
10286 | { | |
10287 | if (mips_opts.at == ATREG) | |
10288 | as_warn (_("used $at without \".set noat\"")); | |
10289 | else | |
10290 | as_warn (_("used $%u with \".set at=$%u\""), | |
10291 | regno, mips_opts.at); | |
10292 | } | |
252b5132 RH |
10293 | break; |
10294 | ||
10295 | default: | |
10296 | internalError (); | |
10297 | } | |
10298 | ||
10299 | if (regno == ILLEGAL_REG) | |
10300 | break; | |
10301 | ||
10302 | switch (c) | |
10303 | { | |
10304 | case 'x': | |
10305 | case 'v': | |
bf12938e | 10306 | MIPS16_INSERT_OPERAND (RX, *ip, regno); |
252b5132 RH |
10307 | break; |
10308 | case 'y': | |
10309 | case 'w': | |
bf12938e | 10310 | MIPS16_INSERT_OPERAND (RY, *ip, regno); |
252b5132 RH |
10311 | break; |
10312 | case 'z': | |
bf12938e | 10313 | MIPS16_INSERT_OPERAND (RZ, *ip, regno); |
252b5132 RH |
10314 | break; |
10315 | case 'Z': | |
bf12938e | 10316 | MIPS16_INSERT_OPERAND (MOVE32Z, *ip, regno); |
252b5132 RH |
10317 | case '0': |
10318 | case 'S': | |
10319 | case 'R': | |
10320 | break; | |
10321 | case 'X': | |
bf12938e | 10322 | MIPS16_INSERT_OPERAND (REGR32, *ip, regno); |
252b5132 RH |
10323 | break; |
10324 | case 'Y': | |
10325 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
bf12938e | 10326 | MIPS16_INSERT_OPERAND (REG32R, *ip, regno); |
252b5132 RH |
10327 | break; |
10328 | default: | |
10329 | internalError (); | |
10330 | } | |
10331 | ||
10332 | lastregno = regno; | |
10333 | continue; | |
10334 | ||
10335 | case 'P': | |
10336 | if (strncmp (s, "$pc", 3) == 0) | |
10337 | { | |
10338 | s += 3; | |
10339 | continue; | |
10340 | } | |
10341 | break; | |
10342 | ||
252b5132 RH |
10343 | case '5': |
10344 | case 'H': | |
10345 | case 'W': | |
10346 | case 'D': | |
10347 | case 'j': | |
252b5132 RH |
10348 | case 'V': |
10349 | case 'C': | |
10350 | case 'U': | |
10351 | case 'k': | |
10352 | case 'K': | |
d6f16593 MR |
10353 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); |
10354 | if (i > 0) | |
252b5132 | 10355 | { |
d6f16593 | 10356 | if (imm_expr.X_op != O_constant) |
252b5132 | 10357 | { |
b34976b6 | 10358 | mips16_ext = TRUE; |
b34976b6 | 10359 | ip->use_extend = TRUE; |
252b5132 | 10360 | ip->extend = 0; |
252b5132 | 10361 | } |
d6f16593 MR |
10362 | else |
10363 | { | |
10364 | /* We need to relax this instruction. */ | |
10365 | *offset_reloc = *imm_reloc; | |
10366 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; | |
10367 | } | |
10368 | s = expr_end; | |
10369 | continue; | |
252b5132 | 10370 | } |
d6f16593 MR |
10371 | *imm_reloc = BFD_RELOC_UNUSED; |
10372 | /* Fall through. */ | |
10373 | case '<': | |
10374 | case '>': | |
10375 | case '[': | |
10376 | case ']': | |
10377 | case '4': | |
10378 | case '8': | |
10379 | my_getExpression (&imm_expr, s); | |
252b5132 RH |
10380 | if (imm_expr.X_op == O_register) |
10381 | { | |
10382 | /* What we thought was an expression turned out to | |
10383 | be a register. */ | |
10384 | ||
10385 | if (s[0] == '(' && args[1] == '(') | |
10386 | { | |
10387 | /* It looks like the expression was omitted | |
10388 | before a register indirection, which means | |
10389 | that the expression is implicitly zero. We | |
10390 | still set up imm_expr, so that we handle | |
10391 | explicit extensions correctly. */ | |
10392 | imm_expr.X_op = O_constant; | |
10393 | imm_expr.X_add_number = 0; | |
f6688943 | 10394 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10395 | continue; |
10396 | } | |
10397 | ||
10398 | break; | |
10399 | } | |
10400 | ||
10401 | /* We need to relax this instruction. */ | |
f6688943 | 10402 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10403 | s = expr_end; |
10404 | continue; | |
10405 | ||
10406 | case 'p': | |
10407 | case 'q': | |
10408 | case 'A': | |
10409 | case 'B': | |
10410 | case 'E': | |
10411 | /* We use offset_reloc rather than imm_reloc for the PC | |
10412 | relative operands. This lets macros with both | |
10413 | immediate and address operands work correctly. */ | |
10414 | my_getExpression (&offset_expr, s); | |
10415 | ||
10416 | if (offset_expr.X_op == O_register) | |
10417 | break; | |
10418 | ||
10419 | /* We need to relax this instruction. */ | |
f6688943 | 10420 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10421 | s = expr_end; |
10422 | continue; | |
10423 | ||
10424 | case '6': /* break code */ | |
10425 | my_getExpression (&imm_expr, s); | |
10426 | check_absolute_expr (ip, &imm_expr); | |
10427 | if ((unsigned long) imm_expr.X_add_number > 63) | |
bf12938e RS |
10428 | as_warn (_("Invalid value for `%s' (%lu)"), |
10429 | ip->insn_mo->name, | |
10430 | (unsigned long) imm_expr.X_add_number); | |
10431 | MIPS16_INSERT_OPERAND (IMM6, *ip, imm_expr.X_add_number); | |
252b5132 RH |
10432 | imm_expr.X_op = O_absent; |
10433 | s = expr_end; | |
10434 | continue; | |
10435 | ||
10436 | case 'a': /* 26 bit address */ | |
10437 | my_getExpression (&offset_expr, s); | |
10438 | s = expr_end; | |
f6688943 | 10439 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
10440 | ip->insn_opcode <<= 16; |
10441 | continue; | |
10442 | ||
10443 | case 'l': /* register list for entry macro */ | |
10444 | case 'L': /* register list for exit macro */ | |
10445 | { | |
10446 | int mask; | |
10447 | ||
10448 | if (c == 'l') | |
10449 | mask = 0; | |
10450 | else | |
10451 | mask = 7 << 3; | |
10452 | while (*s != '\0') | |
10453 | { | |
707bfff6 | 10454 | unsigned int freg, reg1, reg2; |
252b5132 RH |
10455 | |
10456 | while (*s == ' ' || *s == ',') | |
10457 | ++s; | |
707bfff6 | 10458 | if (reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
252b5132 | 10459 | freg = 0; |
707bfff6 TS |
10460 | else if (reg_lookup (&s, RTYPE_FPU, ®1)) |
10461 | freg = 1; | |
252b5132 RH |
10462 | else |
10463 | { | |
707bfff6 TS |
10464 | as_bad (_("can't parse register list")); |
10465 | break; | |
252b5132 RH |
10466 | } |
10467 | if (*s == ' ') | |
10468 | ++s; | |
10469 | if (*s != '-') | |
10470 | reg2 = reg1; | |
10471 | else | |
10472 | { | |
10473 | ++s; | |
707bfff6 TS |
10474 | if (!reg_lookup (&s, freg ? RTYPE_FPU |
10475 | : (RTYPE_GP | RTYPE_NUM), ®2)) | |
252b5132 | 10476 | { |
707bfff6 TS |
10477 | as_bad (_("invalid register list")); |
10478 | break; | |
252b5132 RH |
10479 | } |
10480 | } | |
10481 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
10482 | { | |
10483 | mask &= ~ (7 << 3); | |
10484 | mask |= 5 << 3; | |
10485 | } | |
10486 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
10487 | { | |
10488 | mask &= ~ (7 << 3); | |
10489 | mask |= 6 << 3; | |
10490 | } | |
10491 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
10492 | mask |= (reg2 - 3) << 3; | |
10493 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
10494 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 10495 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
10496 | mask |= 1; |
10497 | else | |
10498 | { | |
10499 | as_bad (_("invalid register list")); | |
10500 | break; | |
10501 | } | |
10502 | } | |
10503 | /* The mask is filled in in the opcode table for the | |
10504 | benefit of the disassembler. We remove it before | |
10505 | applying the actual mask. */ | |
10506 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
10507 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
10508 | } | |
10509 | continue; | |
10510 | ||
0499d65b TS |
10511 | case 'm': /* Register list for save insn. */ |
10512 | case 'M': /* Register list for restore insn. */ | |
10513 | { | |
10514 | int opcode = 0; | |
10515 | int framesz = 0, seen_framesz = 0; | |
10516 | int args = 0, statics = 0, sregs = 0; | |
10517 | ||
10518 | while (*s != '\0') | |
10519 | { | |
10520 | unsigned int reg1, reg2; | |
10521 | ||
10522 | SKIP_SPACE_TABS (s); | |
10523 | while (*s == ',') | |
10524 | ++s; | |
10525 | SKIP_SPACE_TABS (s); | |
10526 | ||
10527 | my_getExpression (&imm_expr, s); | |
10528 | if (imm_expr.X_op == O_constant) | |
10529 | { | |
10530 | /* Handle the frame size. */ | |
10531 | if (seen_framesz) | |
10532 | { | |
10533 | as_bad (_("more than one frame size in list")); | |
10534 | break; | |
10535 | } | |
10536 | seen_framesz = 1; | |
10537 | framesz = imm_expr.X_add_number; | |
10538 | imm_expr.X_op = O_absent; | |
10539 | s = expr_end; | |
10540 | continue; | |
10541 | } | |
10542 | ||
707bfff6 | 10543 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
0499d65b TS |
10544 | { |
10545 | as_bad (_("can't parse register list")); | |
10546 | break; | |
10547 | } | |
0499d65b | 10548 | |
707bfff6 TS |
10549 | while (*s == ' ') |
10550 | ++s; | |
10551 | ||
0499d65b TS |
10552 | if (*s != '-') |
10553 | reg2 = reg1; | |
10554 | else | |
10555 | { | |
10556 | ++s; | |
707bfff6 TS |
10557 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®2) |
10558 | || reg2 < reg1) | |
0499d65b TS |
10559 | { |
10560 | as_bad (_("can't parse register list")); | |
10561 | break; | |
10562 | } | |
0499d65b TS |
10563 | } |
10564 | ||
10565 | while (reg1 <= reg2) | |
10566 | { | |
10567 | if (reg1 >= 4 && reg1 <= 7) | |
10568 | { | |
3a93f742 | 10569 | if (!seen_framesz) |
0499d65b TS |
10570 | /* args $a0-$a3 */ |
10571 | args |= 1 << (reg1 - 4); | |
10572 | else | |
10573 | /* statics $a0-$a3 */ | |
10574 | statics |= 1 << (reg1 - 4); | |
10575 | } | |
10576 | else if ((reg1 >= 16 && reg1 <= 23) || reg1 == 30) | |
10577 | { | |
10578 | /* $s0-$s8 */ | |
10579 | sregs |= 1 << ((reg1 == 30) ? 8 : (reg1 - 16)); | |
10580 | } | |
10581 | else if (reg1 == 31) | |
10582 | { | |
10583 | /* Add $ra to insn. */ | |
10584 | opcode |= 0x40; | |
10585 | } | |
10586 | else | |
10587 | { | |
10588 | as_bad (_("unexpected register in list")); | |
10589 | break; | |
10590 | } | |
10591 | if (++reg1 == 24) | |
10592 | reg1 = 30; | |
10593 | } | |
10594 | } | |
10595 | ||
10596 | /* Encode args/statics combination. */ | |
10597 | if (args & statics) | |
10598 | as_bad (_("arg/static registers overlap")); | |
10599 | else if (args == 0xf) | |
10600 | /* All $a0-$a3 are args. */ | |
10601 | opcode |= MIPS16_ALL_ARGS << 16; | |
10602 | else if (statics == 0xf) | |
10603 | /* All $a0-$a3 are statics. */ | |
10604 | opcode |= MIPS16_ALL_STATICS << 16; | |
10605 | else | |
10606 | { | |
10607 | int narg = 0, nstat = 0; | |
10608 | ||
10609 | /* Count arg registers. */ | |
10610 | while (args & 0x1) | |
10611 | { | |
10612 | args >>= 1; | |
10613 | narg++; | |
10614 | } | |
10615 | if (args != 0) | |
10616 | as_bad (_("invalid arg register list")); | |
10617 | ||
10618 | /* Count static registers. */ | |
10619 | while (statics & 0x8) | |
10620 | { | |
10621 | statics = (statics << 1) & 0xf; | |
10622 | nstat++; | |
10623 | } | |
10624 | if (statics != 0) | |
10625 | as_bad (_("invalid static register list")); | |
10626 | ||
10627 | /* Encode args/statics. */ | |
10628 | opcode |= ((narg << 2) | nstat) << 16; | |
10629 | } | |
10630 | ||
10631 | /* Encode $s0/$s1. */ | |
10632 | if (sregs & (1 << 0)) /* $s0 */ | |
10633 | opcode |= 0x20; | |
10634 | if (sregs & (1 << 1)) /* $s1 */ | |
10635 | opcode |= 0x10; | |
10636 | sregs >>= 2; | |
10637 | ||
10638 | if (sregs != 0) | |
10639 | { | |
10640 | /* Count regs $s2-$s8. */ | |
10641 | int nsreg = 0; | |
10642 | while (sregs & 1) | |
10643 | { | |
10644 | sregs >>= 1; | |
10645 | nsreg++; | |
10646 | } | |
10647 | if (sregs != 0) | |
10648 | as_bad (_("invalid static register list")); | |
10649 | /* Encode $s2-$s8. */ | |
10650 | opcode |= nsreg << 24; | |
10651 | } | |
10652 | ||
10653 | /* Encode frame size. */ | |
10654 | if (!seen_framesz) | |
10655 | as_bad (_("missing frame size")); | |
10656 | else if ((framesz & 7) != 0 || framesz < 0 | |
10657 | || framesz > 0xff * 8) | |
10658 | as_bad (_("invalid frame size")); | |
10659 | else if (framesz != 128 || (opcode >> 16) != 0) | |
10660 | { | |
10661 | framesz /= 8; | |
10662 | opcode |= (((framesz & 0xf0) << 16) | |
10663 | | (framesz & 0x0f)); | |
10664 | } | |
10665 | ||
10666 | /* Finally build the instruction. */ | |
10667 | if ((opcode >> 16) != 0 || framesz == 0) | |
10668 | { | |
10669 | ip->use_extend = TRUE; | |
10670 | ip->extend = opcode >> 16; | |
10671 | } | |
10672 | ip->insn_opcode |= opcode & 0x7f; | |
10673 | } | |
10674 | continue; | |
10675 | ||
252b5132 RH |
10676 | case 'e': /* extend code */ |
10677 | my_getExpression (&imm_expr, s); | |
10678 | check_absolute_expr (ip, &imm_expr); | |
10679 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
10680 | { | |
10681 | as_warn (_("Invalid value for `%s' (%lu)"), | |
10682 | ip->insn_mo->name, | |
10683 | (unsigned long) imm_expr.X_add_number); | |
10684 | imm_expr.X_add_number &= 0x7ff; | |
10685 | } | |
10686 | ip->insn_opcode |= imm_expr.X_add_number; | |
10687 | imm_expr.X_op = O_absent; | |
10688 | s = expr_end; | |
10689 | continue; | |
10690 | ||
10691 | default: | |
10692 | internalError (); | |
10693 | } | |
10694 | break; | |
10695 | } | |
10696 | ||
10697 | /* Args don't match. */ | |
10698 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
10699 | strcmp (insn->name, insn[1].name) == 0) | |
10700 | { | |
10701 | ++insn; | |
10702 | s = argsstart; | |
10703 | continue; | |
10704 | } | |
10705 | ||
10706 | insn_error = _("illegal operands"); | |
10707 | ||
10708 | return; | |
10709 | } | |
10710 | } | |
10711 | ||
10712 | /* This structure holds information we know about a mips16 immediate | |
10713 | argument type. */ | |
10714 | ||
e972090a NC |
10715 | struct mips16_immed_operand |
10716 | { | |
252b5132 RH |
10717 | /* The type code used in the argument string in the opcode table. */ |
10718 | int type; | |
10719 | /* The number of bits in the short form of the opcode. */ | |
10720 | int nbits; | |
10721 | /* The number of bits in the extended form of the opcode. */ | |
10722 | int extbits; | |
10723 | /* The amount by which the short form is shifted when it is used; | |
10724 | for example, the sw instruction has a shift count of 2. */ | |
10725 | int shift; | |
10726 | /* The amount by which the short form is shifted when it is stored | |
10727 | into the instruction code. */ | |
10728 | int op_shift; | |
10729 | /* Non-zero if the short form is unsigned. */ | |
10730 | int unsp; | |
10731 | /* Non-zero if the extended form is unsigned. */ | |
10732 | int extu; | |
10733 | /* Non-zero if the value is PC relative. */ | |
10734 | int pcrel; | |
10735 | }; | |
10736 | ||
10737 | /* The mips16 immediate operand types. */ | |
10738 | ||
10739 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
10740 | { | |
10741 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10742 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10743 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10744 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10745 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
10746 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10747 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10748 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10749 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10750 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
10751 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10752 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10753 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10754 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
10755 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10756 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10757 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10758 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10759 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
10760 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
10761 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
10762 | }; | |
10763 | ||
10764 | #define MIPS16_NUM_IMMED \ | |
10765 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
10766 | ||
10767 | /* Handle a mips16 instruction with an immediate value. This or's the | |
10768 | small immediate value into *INSN. It sets *USE_EXTEND to indicate | |
10769 | whether an extended value is needed; if one is needed, it sets | |
10770 | *EXTEND to the value. The argument type is TYPE. The value is VAL. | |
10771 | If SMALL is true, an unextended opcode was explicitly requested. | |
10772 | If EXT is true, an extended opcode was explicitly requested. If | |
10773 | WARN is true, warn if EXT does not match reality. */ | |
10774 | ||
10775 | static void | |
17a2f251 TS |
10776 | mips16_immed (char *file, unsigned int line, int type, offsetT val, |
10777 | bfd_boolean warn, bfd_boolean small, bfd_boolean ext, | |
10778 | unsigned long *insn, bfd_boolean *use_extend, | |
10779 | unsigned short *extend) | |
252b5132 | 10780 | { |
3994f87e | 10781 | const struct mips16_immed_operand *op; |
252b5132 | 10782 | int mintiny, maxtiny; |
b34976b6 | 10783 | bfd_boolean needext; |
252b5132 RH |
10784 | |
10785 | op = mips16_immed_operands; | |
10786 | while (op->type != type) | |
10787 | { | |
10788 | ++op; | |
10789 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
10790 | } | |
10791 | ||
10792 | if (op->unsp) | |
10793 | { | |
10794 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
10795 | { | |
10796 | mintiny = 1; | |
10797 | maxtiny = 1 << op->nbits; | |
10798 | } | |
10799 | else | |
10800 | { | |
10801 | mintiny = 0; | |
10802 | maxtiny = (1 << op->nbits) - 1; | |
10803 | } | |
10804 | } | |
10805 | else | |
10806 | { | |
10807 | mintiny = - (1 << (op->nbits - 1)); | |
10808 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
10809 | } | |
10810 | ||
10811 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
10812 | if (type == 'p' || type == 'q') | |
10813 | val /= 2; | |
10814 | ||
10815 | if ((val & ((1 << op->shift) - 1)) != 0 | |
10816 | || val < (mintiny << op->shift) | |
10817 | || val > (maxtiny << op->shift)) | |
b34976b6 | 10818 | needext = TRUE; |
252b5132 | 10819 | else |
b34976b6 | 10820 | needext = FALSE; |
252b5132 RH |
10821 | |
10822 | if (warn && ext && ! needext) | |
beae10d5 KH |
10823 | as_warn_where (file, line, |
10824 | _("extended operand requested but not required")); | |
252b5132 RH |
10825 | if (small && needext) |
10826 | as_bad_where (file, line, _("invalid unextended operand value")); | |
10827 | ||
10828 | if (small || (! ext && ! needext)) | |
10829 | { | |
10830 | int insnval; | |
10831 | ||
b34976b6 | 10832 | *use_extend = FALSE; |
252b5132 RH |
10833 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); |
10834 | insnval <<= op->op_shift; | |
10835 | *insn |= insnval; | |
10836 | } | |
10837 | else | |
10838 | { | |
10839 | long minext, maxext; | |
10840 | int extval; | |
10841 | ||
10842 | if (op->extu) | |
10843 | { | |
10844 | minext = 0; | |
10845 | maxext = (1 << op->extbits) - 1; | |
10846 | } | |
10847 | else | |
10848 | { | |
10849 | minext = - (1 << (op->extbits - 1)); | |
10850 | maxext = (1 << (op->extbits - 1)) - 1; | |
10851 | } | |
10852 | if (val < minext || val > maxext) | |
10853 | as_bad_where (file, line, | |
10854 | _("operand value out of range for instruction")); | |
10855 | ||
b34976b6 | 10856 | *use_extend = TRUE; |
252b5132 RH |
10857 | if (op->extbits == 16) |
10858 | { | |
10859 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
10860 | val &= 0x1f; | |
10861 | } | |
10862 | else if (op->extbits == 15) | |
10863 | { | |
10864 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
10865 | val &= 0xf; | |
10866 | } | |
10867 | else | |
10868 | { | |
10869 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
10870 | val = 0; | |
10871 | } | |
10872 | ||
10873 | *extend = (unsigned short) extval; | |
10874 | *insn |= val; | |
10875 | } | |
10876 | } | |
10877 | \f | |
d6f16593 | 10878 | struct percent_op_match |
ad8d3bb3 | 10879 | { |
5e0116d5 RS |
10880 | const char *str; |
10881 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
10882 | }; |
10883 | ||
10884 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 10885 | { |
5e0116d5 | 10886 | {"%lo", BFD_RELOC_LO16}, |
ad8d3bb3 | 10887 | #ifdef OBJ_ELF |
5e0116d5 RS |
10888 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
10889 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
10890 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
10891 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
10892 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
10893 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
10894 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
10895 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
10896 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
10897 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
10898 | {"%half", BFD_RELOC_16}, | |
10899 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
10900 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
10901 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
10902 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
10903 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
10904 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
10905 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
10906 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
10907 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
10908 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
ad8d3bb3 | 10909 | #endif |
5e0116d5 | 10910 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
10911 | }; |
10912 | ||
d6f16593 MR |
10913 | static const struct percent_op_match mips16_percent_op[] = |
10914 | { | |
10915 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
10916 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
738e5348 RS |
10917 | {"%got", BFD_RELOC_MIPS16_GOT16}, |
10918 | {"%call16", BFD_RELOC_MIPS16_CALL16}, | |
d6f16593 MR |
10919 | {"%hi", BFD_RELOC_MIPS16_HI16_S} |
10920 | }; | |
10921 | ||
252b5132 | 10922 | |
5e0116d5 RS |
10923 | /* Return true if *STR points to a relocation operator. When returning true, |
10924 | move *STR over the operator and store its relocation code in *RELOC. | |
10925 | Leave both *STR and *RELOC alone when returning false. */ | |
10926 | ||
10927 | static bfd_boolean | |
17a2f251 | 10928 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 10929 | { |
d6f16593 MR |
10930 | const struct percent_op_match *percent_op; |
10931 | size_t limit, i; | |
10932 | ||
10933 | if (mips_opts.mips16) | |
10934 | { | |
10935 | percent_op = mips16_percent_op; | |
10936 | limit = ARRAY_SIZE (mips16_percent_op); | |
10937 | } | |
10938 | else | |
10939 | { | |
10940 | percent_op = mips_percent_op; | |
10941 | limit = ARRAY_SIZE (mips_percent_op); | |
10942 | } | |
76b3015f | 10943 | |
d6f16593 | 10944 | for (i = 0; i < limit; i++) |
5e0116d5 | 10945 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 10946 | { |
3f98094e DJ |
10947 | int len = strlen (percent_op[i].str); |
10948 | ||
10949 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
10950 | continue; | |
10951 | ||
5e0116d5 RS |
10952 | *str += strlen (percent_op[i].str); |
10953 | *reloc = percent_op[i].reloc; | |
394f9b3a | 10954 | |
5e0116d5 RS |
10955 | /* Check whether the output BFD supports this relocation. |
10956 | If not, issue an error and fall back on something safe. */ | |
10957 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 10958 | { |
5e0116d5 RS |
10959 | as_bad ("relocation %s isn't supported by the current ABI", |
10960 | percent_op[i].str); | |
01a3f561 | 10961 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 10962 | } |
5e0116d5 | 10963 | return TRUE; |
394f9b3a | 10964 | } |
5e0116d5 | 10965 | return FALSE; |
394f9b3a | 10966 | } |
ad8d3bb3 | 10967 | |
ad8d3bb3 | 10968 | |
5e0116d5 RS |
10969 | /* Parse string STR as a 16-bit relocatable operand. Store the |
10970 | expression in *EP and the relocations in the array starting | |
10971 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 10972 | |
01a3f561 | 10973 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 10974 | |
5e0116d5 | 10975 | static size_t |
17a2f251 TS |
10976 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
10977 | char *str) | |
ad8d3bb3 | 10978 | { |
5e0116d5 RS |
10979 | bfd_reloc_code_real_type reversed_reloc[3]; |
10980 | size_t reloc_index, i; | |
09b8f35a RS |
10981 | int crux_depth, str_depth; |
10982 | char *crux; | |
5e0116d5 RS |
10983 | |
10984 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
10985 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
10986 | of the main expression and with CRUX_DEPTH containing the number | |
10987 | of open brackets at that point. */ | |
10988 | reloc_index = -1; | |
10989 | str_depth = 0; | |
10990 | do | |
fb1b3232 | 10991 | { |
09b8f35a RS |
10992 | reloc_index++; |
10993 | crux = str; | |
10994 | crux_depth = str_depth; | |
10995 | ||
10996 | /* Skip over whitespace and brackets, keeping count of the number | |
10997 | of brackets. */ | |
10998 | while (*str == ' ' || *str == '\t' || *str == '(') | |
10999 | if (*str++ == '(') | |
11000 | str_depth++; | |
5e0116d5 | 11001 | } |
09b8f35a RS |
11002 | while (*str == '%' |
11003 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
11004 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 11005 | |
09b8f35a | 11006 | my_getExpression (ep, crux); |
5e0116d5 | 11007 | str = expr_end; |
394f9b3a | 11008 | |
5e0116d5 | 11009 | /* Match every open bracket. */ |
09b8f35a | 11010 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 11011 | if (*str++ == ')') |
09b8f35a | 11012 | crux_depth--; |
394f9b3a | 11013 | |
09b8f35a | 11014 | if (crux_depth > 0) |
5e0116d5 | 11015 | as_bad ("unclosed '('"); |
394f9b3a | 11016 | |
5e0116d5 | 11017 | expr_end = str; |
252b5132 | 11018 | |
01a3f561 | 11019 | if (reloc_index != 0) |
64bdfcaf RS |
11020 | { |
11021 | prev_reloc_op_frag = frag_now; | |
11022 | for (i = 0; i < reloc_index; i++) | |
11023 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
11024 | } | |
fb1b3232 | 11025 | |
5e0116d5 | 11026 | return reloc_index; |
252b5132 RH |
11027 | } |
11028 | ||
11029 | static void | |
17a2f251 | 11030 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
11031 | { |
11032 | char *save_in; | |
98aa84af | 11033 | valueT val; |
252b5132 RH |
11034 | |
11035 | save_in = input_line_pointer; | |
11036 | input_line_pointer = str; | |
11037 | expression (ep); | |
11038 | expr_end = input_line_pointer; | |
11039 | input_line_pointer = save_in; | |
11040 | ||
11041 | /* If we are in mips16 mode, and this is an expression based on `.', | |
11042 | then we bump the value of the symbol by 1 since that is how other | |
11043 | text symbols are handled. We don't bother to handle complex | |
11044 | expressions, just `.' plus or minus a constant. */ | |
11045 | if (mips_opts.mips16 | |
11046 | && ep->X_op == O_symbol | |
11047 | && strcmp (S_GET_NAME (ep->X_add_symbol), FAKE_LABEL_NAME) == 0 | |
11048 | && S_GET_SEGMENT (ep->X_add_symbol) == now_seg | |
49309057 ILT |
11049 | && symbol_get_frag (ep->X_add_symbol) == frag_now |
11050 | && symbol_constant_p (ep->X_add_symbol) | |
98aa84af AM |
11051 | && (val = S_GET_VALUE (ep->X_add_symbol)) == frag_now_fix ()) |
11052 | S_SET_VALUE (ep->X_add_symbol, val + 1); | |
252b5132 RH |
11053 | } |
11054 | ||
252b5132 | 11055 | char * |
17a2f251 | 11056 | md_atof (int type, char *litP, int *sizeP) |
252b5132 | 11057 | { |
499ac353 | 11058 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
252b5132 RH |
11059 | } |
11060 | ||
11061 | void | |
17a2f251 | 11062 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
11063 | { |
11064 | if (target_big_endian) | |
11065 | number_to_chars_bigendian (buf, val, n); | |
11066 | else | |
11067 | number_to_chars_littleendian (buf, val, n); | |
11068 | } | |
11069 | \f | |
ae948b86 | 11070 | #ifdef OBJ_ELF |
e013f690 TS |
11071 | static int support_64bit_objects(void) |
11072 | { | |
11073 | const char **list, **l; | |
aa3d8fdf | 11074 | int yes; |
e013f690 TS |
11075 | |
11076 | list = bfd_target_list (); | |
11077 | for (l = list; *l != NULL; l++) | |
11078 | #ifdef TE_TMIPS | |
11079 | /* This is traditional mips */ | |
11080 | if (strcmp (*l, "elf64-tradbigmips") == 0 | |
11081 | || strcmp (*l, "elf64-tradlittlemips") == 0) | |
11082 | #else | |
11083 | if (strcmp (*l, "elf64-bigmips") == 0 | |
11084 | || strcmp (*l, "elf64-littlemips") == 0) | |
11085 | #endif | |
11086 | break; | |
aa3d8fdf | 11087 | yes = (*l != NULL); |
e013f690 | 11088 | free (list); |
aa3d8fdf | 11089 | return yes; |
e013f690 | 11090 | } |
ae948b86 | 11091 | #endif /* OBJ_ELF */ |
e013f690 | 11092 | |
78849248 | 11093 | const char *md_shortopts = "O::g::G:"; |
252b5132 | 11094 | |
e972090a NC |
11095 | struct option md_longopts[] = |
11096 | { | |
f9b4148d CD |
11097 | /* Options which specify architecture. */ |
11098 | #define OPTION_ARCH_BASE (OPTION_MD_BASE) | |
11099 | #define OPTION_MARCH (OPTION_ARCH_BASE + 0) | |
11100 | {"march", required_argument, NULL, OPTION_MARCH}, | |
11101 | #define OPTION_MTUNE (OPTION_ARCH_BASE + 1) | |
11102 | {"mtune", required_argument, NULL, OPTION_MTUNE}, | |
11103 | #define OPTION_MIPS1 (OPTION_ARCH_BASE + 2) | |
252b5132 RH |
11104 | {"mips0", no_argument, NULL, OPTION_MIPS1}, |
11105 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
f9b4148d | 11106 | #define OPTION_MIPS2 (OPTION_ARCH_BASE + 3) |
252b5132 | 11107 | {"mips2", no_argument, NULL, OPTION_MIPS2}, |
f9b4148d | 11108 | #define OPTION_MIPS3 (OPTION_ARCH_BASE + 4) |
252b5132 | 11109 | {"mips3", no_argument, NULL, OPTION_MIPS3}, |
f9b4148d | 11110 | #define OPTION_MIPS4 (OPTION_ARCH_BASE + 5) |
252b5132 | 11111 | {"mips4", no_argument, NULL, OPTION_MIPS4}, |
f9b4148d | 11112 | #define OPTION_MIPS5 (OPTION_ARCH_BASE + 6) |
ae948b86 | 11113 | {"mips5", no_argument, NULL, OPTION_MIPS5}, |
f9b4148d | 11114 | #define OPTION_MIPS32 (OPTION_ARCH_BASE + 7) |
ae948b86 | 11115 | {"mips32", no_argument, NULL, OPTION_MIPS32}, |
f9b4148d | 11116 | #define OPTION_MIPS64 (OPTION_ARCH_BASE + 8) |
ae948b86 | 11117 | {"mips64", no_argument, NULL, OPTION_MIPS64}, |
f9b4148d CD |
11118 | #define OPTION_MIPS32R2 (OPTION_ARCH_BASE + 9) |
11119 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, | |
5f74bc13 CD |
11120 | #define OPTION_MIPS64R2 (OPTION_ARCH_BASE + 10) |
11121 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, | |
f9b4148d CD |
11122 | |
11123 | /* Options which specify Application Specific Extensions (ASEs). */ | |
5f74bc13 | 11124 | #define OPTION_ASE_BASE (OPTION_ARCH_BASE + 11) |
f9b4148d CD |
11125 | #define OPTION_MIPS16 (OPTION_ASE_BASE + 0) |
11126 | {"mips16", no_argument, NULL, OPTION_MIPS16}, | |
11127 | #define OPTION_NO_MIPS16 (OPTION_ASE_BASE + 1) | |
11128 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, | |
11129 | #define OPTION_MIPS3D (OPTION_ASE_BASE + 2) | |
11130 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, | |
11131 | #define OPTION_NO_MIPS3D (OPTION_ASE_BASE + 3) | |
11132 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, | |
11133 | #define OPTION_MDMX (OPTION_ASE_BASE + 4) | |
11134 | {"mdmx", no_argument, NULL, OPTION_MDMX}, | |
11135 | #define OPTION_NO_MDMX (OPTION_ASE_BASE + 5) | |
11136 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, | |
74cd071d CF |
11137 | #define OPTION_DSP (OPTION_ASE_BASE + 6) |
11138 | {"mdsp", no_argument, NULL, OPTION_DSP}, | |
11139 | #define OPTION_NO_DSP (OPTION_ASE_BASE + 7) | |
11140 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, | |
ef2e4d86 CF |
11141 | #define OPTION_MT (OPTION_ASE_BASE + 8) |
11142 | {"mmt", no_argument, NULL, OPTION_MT}, | |
11143 | #define OPTION_NO_MT (OPTION_ASE_BASE + 9) | |
11144 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, | |
e16bfa71 TS |
11145 | #define OPTION_SMARTMIPS (OPTION_ASE_BASE + 10) |
11146 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, | |
11147 | #define OPTION_NO_SMARTMIPS (OPTION_ASE_BASE + 11) | |
11148 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, | |
8b082fb1 TS |
11149 | #define OPTION_DSPR2 (OPTION_ASE_BASE + 12) |
11150 | {"mdspr2", no_argument, NULL, OPTION_DSPR2}, | |
11151 | #define OPTION_NO_DSPR2 (OPTION_ASE_BASE + 13) | |
11152 | {"mno-dspr2", no_argument, NULL, OPTION_NO_DSPR2}, | |
f9b4148d CD |
11153 | |
11154 | /* Old-style architecture options. Don't add more of these. */ | |
8b082fb1 | 11155 | #define OPTION_COMPAT_ARCH_BASE (OPTION_ASE_BASE + 14) |
f9b4148d CD |
11156 | #define OPTION_M4650 (OPTION_COMPAT_ARCH_BASE + 0) |
11157 | {"m4650", no_argument, NULL, OPTION_M4650}, | |
11158 | #define OPTION_NO_M4650 (OPTION_COMPAT_ARCH_BASE + 1) | |
11159 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, | |
11160 | #define OPTION_M4010 (OPTION_COMPAT_ARCH_BASE + 2) | |
11161 | {"m4010", no_argument, NULL, OPTION_M4010}, | |
11162 | #define OPTION_NO_M4010 (OPTION_COMPAT_ARCH_BASE + 3) | |
11163 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, | |
11164 | #define OPTION_M4100 (OPTION_COMPAT_ARCH_BASE + 4) | |
11165 | {"m4100", no_argument, NULL, OPTION_M4100}, | |
11166 | #define OPTION_NO_M4100 (OPTION_COMPAT_ARCH_BASE + 5) | |
11167 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, | |
11168 | #define OPTION_M3900 (OPTION_COMPAT_ARCH_BASE + 6) | |
11169 | {"m3900", no_argument, NULL, OPTION_M3900}, | |
11170 | #define OPTION_NO_M3900 (OPTION_COMPAT_ARCH_BASE + 7) | |
11171 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, | |
11172 | ||
11173 | /* Options which enable bug fixes. */ | |
11174 | #define OPTION_FIX_BASE (OPTION_COMPAT_ARCH_BASE + 8) | |
11175 | #define OPTION_M7000_HILO_FIX (OPTION_FIX_BASE + 0) | |
11176 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, | |
11177 | #define OPTION_MNO_7000_HILO_FIX (OPTION_FIX_BASE + 1) | |
11178 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
11179 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
d766e8ec RS |
11180 | #define OPTION_FIX_VR4120 (OPTION_FIX_BASE + 2) |
11181 | #define OPTION_NO_FIX_VR4120 (OPTION_FIX_BASE + 3) | |
11182 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, | |
11183 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
7d8e00cf RS |
11184 | #define OPTION_FIX_VR4130 (OPTION_FIX_BASE + 4) |
11185 | #define OPTION_NO_FIX_VR4130 (OPTION_FIX_BASE + 5) | |
11186 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, | |
11187 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
f9b4148d CD |
11188 | |
11189 | /* Miscellaneous options. */ | |
7d8e00cf | 11190 | #define OPTION_MISC_BASE (OPTION_FIX_BASE + 6) |
1ffcab4b | 11191 | #define OPTION_TRAP (OPTION_MISC_BASE + 0) |
252b5132 RH |
11192 | {"trap", no_argument, NULL, OPTION_TRAP}, |
11193 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
1ffcab4b | 11194 | #define OPTION_BREAK (OPTION_MISC_BASE + 1) |
252b5132 RH |
11195 | {"break", no_argument, NULL, OPTION_BREAK}, |
11196 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
1ffcab4b | 11197 | #define OPTION_EB (OPTION_MISC_BASE + 2) |
252b5132 | 11198 | {"EB", no_argument, NULL, OPTION_EB}, |
1ffcab4b | 11199 | #define OPTION_EL (OPTION_MISC_BASE + 3) |
252b5132 | 11200 | {"EL", no_argument, NULL, OPTION_EL}, |
1ffcab4b | 11201 | #define OPTION_FP32 (OPTION_MISC_BASE + 4) |
ae948b86 | 11202 | {"mfp32", no_argument, NULL, OPTION_FP32}, |
1ffcab4b | 11203 | #define OPTION_GP32 (OPTION_MISC_BASE + 5) |
c97ef257 | 11204 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
1ffcab4b | 11205 | #define OPTION_CONSTRUCT_FLOATS (OPTION_MISC_BASE + 6) |
119d663a | 11206 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
1ffcab4b | 11207 | #define OPTION_NO_CONSTRUCT_FLOATS (OPTION_MISC_BASE + 7) |
119d663a | 11208 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
1ffcab4b | 11209 | #define OPTION_FP64 (OPTION_MISC_BASE + 8) |
316f5878 | 11210 | {"mfp64", no_argument, NULL, OPTION_FP64}, |
1ffcab4b | 11211 | #define OPTION_GP64 (OPTION_MISC_BASE + 9) |
ae948b86 | 11212 | {"mgp64", no_argument, NULL, OPTION_GP64}, |
1ffcab4b CD |
11213 | #define OPTION_RELAX_BRANCH (OPTION_MISC_BASE + 10) |
11214 | #define OPTION_NO_RELAX_BRANCH (OPTION_MISC_BASE + 11) | |
4a6a3df4 AO |
11215 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, |
11216 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
aa6975fb ILT |
11217 | #define OPTION_MSHARED (OPTION_MISC_BASE + 12) |
11218 | #define OPTION_MNO_SHARED (OPTION_MISC_BASE + 13) | |
11219 | {"mshared", no_argument, NULL, OPTION_MSHARED}, | |
11220 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
aed1a261 RS |
11221 | #define OPTION_MSYM32 (OPTION_MISC_BASE + 14) |
11222 | #define OPTION_MNO_SYM32 (OPTION_MISC_BASE + 15) | |
11223 | {"msym32", no_argument, NULL, OPTION_MSYM32}, | |
11224 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
037b32b9 AN |
11225 | #define OPTION_SOFT_FLOAT (OPTION_MISC_BASE + 16) |
11226 | #define OPTION_HARD_FLOAT (OPTION_MISC_BASE + 17) | |
11227 | {"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT}, | |
11228 | {"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT}, | |
11229 | #define OPTION_SINGLE_FLOAT (OPTION_MISC_BASE + 18) | |
11230 | #define OPTION_DOUBLE_FLOAT (OPTION_MISC_BASE + 19) | |
11231 | {"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT}, | |
11232 | {"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT}, | |
11233 | ||
f9b4148d | 11234 | /* ELF-specific options. */ |
156c2f8b | 11235 | #ifdef OBJ_ELF |
037b32b9 | 11236 | #define OPTION_ELF_BASE (OPTION_MISC_BASE + 20) |
156c2f8b | 11237 | #define OPTION_CALL_SHARED (OPTION_ELF_BASE + 0) |
156c2f8b NC |
11238 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
11239 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
861fb55a DJ |
11240 | #define OPTION_CALL_NONPIC (OPTION_ELF_BASE + 1) |
11241 | {"call_nonpic", no_argument, NULL, OPTION_CALL_NONPIC}, | |
11242 | #define OPTION_NON_SHARED (OPTION_ELF_BASE + 2) | |
156c2f8b | 11243 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
861fb55a | 11244 | #define OPTION_XGOT (OPTION_ELF_BASE + 3) |
156c2f8b | 11245 | {"xgot", no_argument, NULL, OPTION_XGOT}, |
861fb55a | 11246 | #define OPTION_MABI (OPTION_ELF_BASE + 4) |
ae948b86 | 11247 | {"mabi", required_argument, NULL, OPTION_MABI}, |
861fb55a | 11248 | #define OPTION_32 (OPTION_ELF_BASE + 5) |
156c2f8b | 11249 | {"32", no_argument, NULL, OPTION_32}, |
861fb55a | 11250 | #define OPTION_N32 (OPTION_ELF_BASE + 6) |
e013f690 | 11251 | {"n32", no_argument, NULL, OPTION_N32}, |
861fb55a | 11252 | #define OPTION_64 (OPTION_ELF_BASE + 7) |
156c2f8b | 11253 | {"64", no_argument, NULL, OPTION_64}, |
861fb55a | 11254 | #define OPTION_MDEBUG (OPTION_ELF_BASE + 8) |
ecb4347a | 11255 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, |
861fb55a | 11256 | #define OPTION_NO_MDEBUG (OPTION_ELF_BASE + 9) |
ecb4347a | 11257 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, |
861fb55a | 11258 | #define OPTION_PDR (OPTION_ELF_BASE + 10) |
dcd410fe | 11259 | {"mpdr", no_argument, NULL, OPTION_PDR}, |
861fb55a | 11260 | #define OPTION_NO_PDR (OPTION_ELF_BASE + 11) |
dcd410fe | 11261 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, |
861fb55a | 11262 | #define OPTION_MVXWORKS_PIC (OPTION_ELF_BASE + 12) |
0a44bf69 | 11263 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, |
ae948b86 | 11264 | #endif /* OBJ_ELF */ |
f9b4148d | 11265 | |
252b5132 RH |
11266 | {NULL, no_argument, NULL, 0} |
11267 | }; | |
156c2f8b | 11268 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 11269 | |
316f5878 RS |
11270 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
11271 | NEW_VALUE. Warn if another value was already specified. Note: | |
11272 | we have to defer parsing the -march and -mtune arguments in order | |
11273 | to handle 'from-abi' correctly, since the ABI might be specified | |
11274 | in a later argument. */ | |
11275 | ||
11276 | static void | |
17a2f251 | 11277 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
11278 | { |
11279 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
11280 | as_warn (_("A different %s was already specified, is now %s"), | |
11281 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
11282 | new_value); | |
11283 | ||
11284 | *string_ptr = new_value; | |
11285 | } | |
11286 | ||
252b5132 | 11287 | int |
17a2f251 | 11288 | md_parse_option (int c, char *arg) |
252b5132 RH |
11289 | { |
11290 | switch (c) | |
11291 | { | |
119d663a NC |
11292 | case OPTION_CONSTRUCT_FLOATS: |
11293 | mips_disable_float_construction = 0; | |
11294 | break; | |
bdaaa2e1 | 11295 | |
119d663a NC |
11296 | case OPTION_NO_CONSTRUCT_FLOATS: |
11297 | mips_disable_float_construction = 1; | |
11298 | break; | |
bdaaa2e1 | 11299 | |
252b5132 RH |
11300 | case OPTION_TRAP: |
11301 | mips_trap = 1; | |
11302 | break; | |
11303 | ||
11304 | case OPTION_BREAK: | |
11305 | mips_trap = 0; | |
11306 | break; | |
11307 | ||
11308 | case OPTION_EB: | |
11309 | target_big_endian = 1; | |
11310 | break; | |
11311 | ||
11312 | case OPTION_EL: | |
11313 | target_big_endian = 0; | |
11314 | break; | |
11315 | ||
11316 | case 'O': | |
4ffff32f TS |
11317 | if (arg == NULL) |
11318 | mips_optimize = 1; | |
11319 | else if (arg[0] == '0') | |
11320 | mips_optimize = 0; | |
11321 | else if (arg[0] == '1') | |
252b5132 RH |
11322 | mips_optimize = 1; |
11323 | else | |
11324 | mips_optimize = 2; | |
11325 | break; | |
11326 | ||
11327 | case 'g': | |
11328 | if (arg == NULL) | |
11329 | mips_debug = 2; | |
11330 | else | |
11331 | mips_debug = atoi (arg); | |
252b5132 RH |
11332 | break; |
11333 | ||
11334 | case OPTION_MIPS1: | |
316f5878 | 11335 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
11336 | break; |
11337 | ||
11338 | case OPTION_MIPS2: | |
316f5878 | 11339 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
11340 | break; |
11341 | ||
11342 | case OPTION_MIPS3: | |
316f5878 | 11343 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
11344 | break; |
11345 | ||
11346 | case OPTION_MIPS4: | |
316f5878 | 11347 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
11348 | break; |
11349 | ||
84ea6cf2 | 11350 | case OPTION_MIPS5: |
316f5878 | 11351 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
11352 | break; |
11353 | ||
e7af610e | 11354 | case OPTION_MIPS32: |
316f5878 | 11355 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
11356 | break; |
11357 | ||
af7ee8bf CD |
11358 | case OPTION_MIPS32R2: |
11359 | file_mips_isa = ISA_MIPS32R2; | |
11360 | break; | |
11361 | ||
5f74bc13 CD |
11362 | case OPTION_MIPS64R2: |
11363 | file_mips_isa = ISA_MIPS64R2; | |
11364 | break; | |
11365 | ||
84ea6cf2 | 11366 | case OPTION_MIPS64: |
316f5878 | 11367 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
11368 | break; |
11369 | ||
ec68c924 | 11370 | case OPTION_MTUNE: |
316f5878 RS |
11371 | mips_set_option_string (&mips_tune_string, arg); |
11372 | break; | |
ec68c924 | 11373 | |
316f5878 RS |
11374 | case OPTION_MARCH: |
11375 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
11376 | break; |
11377 | ||
11378 | case OPTION_M4650: | |
316f5878 RS |
11379 | mips_set_option_string (&mips_arch_string, "4650"); |
11380 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
11381 | break; |
11382 | ||
11383 | case OPTION_NO_M4650: | |
11384 | break; | |
11385 | ||
11386 | case OPTION_M4010: | |
316f5878 RS |
11387 | mips_set_option_string (&mips_arch_string, "4010"); |
11388 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
11389 | break; |
11390 | ||
11391 | case OPTION_NO_M4010: | |
11392 | break; | |
11393 | ||
11394 | case OPTION_M4100: | |
316f5878 RS |
11395 | mips_set_option_string (&mips_arch_string, "4100"); |
11396 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
11397 | break; |
11398 | ||
11399 | case OPTION_NO_M4100: | |
11400 | break; | |
11401 | ||
252b5132 | 11402 | case OPTION_M3900: |
316f5878 RS |
11403 | mips_set_option_string (&mips_arch_string, "3900"); |
11404 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 11405 | break; |
bdaaa2e1 | 11406 | |
252b5132 RH |
11407 | case OPTION_NO_M3900: |
11408 | break; | |
11409 | ||
deec1734 CD |
11410 | case OPTION_MDMX: |
11411 | mips_opts.ase_mdmx = 1; | |
11412 | break; | |
11413 | ||
11414 | case OPTION_NO_MDMX: | |
11415 | mips_opts.ase_mdmx = 0; | |
11416 | break; | |
11417 | ||
74cd071d CF |
11418 | case OPTION_DSP: |
11419 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 11420 | mips_opts.ase_dspr2 = 0; |
74cd071d CF |
11421 | break; |
11422 | ||
11423 | case OPTION_NO_DSP: | |
8b082fb1 TS |
11424 | mips_opts.ase_dsp = 0; |
11425 | mips_opts.ase_dspr2 = 0; | |
11426 | break; | |
11427 | ||
11428 | case OPTION_DSPR2: | |
11429 | mips_opts.ase_dspr2 = 1; | |
11430 | mips_opts.ase_dsp = 1; | |
11431 | break; | |
11432 | ||
11433 | case OPTION_NO_DSPR2: | |
11434 | mips_opts.ase_dspr2 = 0; | |
74cd071d CF |
11435 | mips_opts.ase_dsp = 0; |
11436 | break; | |
11437 | ||
ef2e4d86 CF |
11438 | case OPTION_MT: |
11439 | mips_opts.ase_mt = 1; | |
11440 | break; | |
11441 | ||
11442 | case OPTION_NO_MT: | |
11443 | mips_opts.ase_mt = 0; | |
11444 | break; | |
11445 | ||
252b5132 RH |
11446 | case OPTION_MIPS16: |
11447 | mips_opts.mips16 = 1; | |
7d10b47d | 11448 | mips_no_prev_insn (); |
252b5132 RH |
11449 | break; |
11450 | ||
11451 | case OPTION_NO_MIPS16: | |
11452 | mips_opts.mips16 = 0; | |
7d10b47d | 11453 | mips_no_prev_insn (); |
252b5132 RH |
11454 | break; |
11455 | ||
1f25f5d3 CD |
11456 | case OPTION_MIPS3D: |
11457 | mips_opts.ase_mips3d = 1; | |
11458 | break; | |
11459 | ||
11460 | case OPTION_NO_MIPS3D: | |
11461 | mips_opts.ase_mips3d = 0; | |
11462 | break; | |
11463 | ||
e16bfa71 TS |
11464 | case OPTION_SMARTMIPS: |
11465 | mips_opts.ase_smartmips = 1; | |
11466 | break; | |
11467 | ||
11468 | case OPTION_NO_SMARTMIPS: | |
11469 | mips_opts.ase_smartmips = 0; | |
11470 | break; | |
11471 | ||
d766e8ec RS |
11472 | case OPTION_FIX_VR4120: |
11473 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
11474 | break; |
11475 | ||
d766e8ec RS |
11476 | case OPTION_NO_FIX_VR4120: |
11477 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
11478 | break; |
11479 | ||
7d8e00cf RS |
11480 | case OPTION_FIX_VR4130: |
11481 | mips_fix_vr4130 = 1; | |
11482 | break; | |
11483 | ||
11484 | case OPTION_NO_FIX_VR4130: | |
11485 | mips_fix_vr4130 = 0; | |
11486 | break; | |
11487 | ||
4a6a3df4 AO |
11488 | case OPTION_RELAX_BRANCH: |
11489 | mips_relax_branch = 1; | |
11490 | break; | |
11491 | ||
11492 | case OPTION_NO_RELAX_BRANCH: | |
11493 | mips_relax_branch = 0; | |
11494 | break; | |
11495 | ||
aa6975fb ILT |
11496 | case OPTION_MSHARED: |
11497 | mips_in_shared = TRUE; | |
11498 | break; | |
11499 | ||
11500 | case OPTION_MNO_SHARED: | |
11501 | mips_in_shared = FALSE; | |
11502 | break; | |
11503 | ||
aed1a261 RS |
11504 | case OPTION_MSYM32: |
11505 | mips_opts.sym32 = TRUE; | |
11506 | break; | |
11507 | ||
11508 | case OPTION_MNO_SYM32: | |
11509 | mips_opts.sym32 = FALSE; | |
11510 | break; | |
11511 | ||
0f074f60 | 11512 | #ifdef OBJ_ELF |
252b5132 RH |
11513 | /* When generating ELF code, we permit -KPIC and -call_shared to |
11514 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
11515 | intended to be compatible with Irix 5. */ | |
11516 | case OPTION_CALL_SHARED: | |
f43abd2b | 11517 | if (!IS_ELF) |
252b5132 RH |
11518 | { |
11519 | as_bad (_("-call_shared is supported only for ELF format")); | |
11520 | return 0; | |
11521 | } | |
11522 | mips_pic = SVR4_PIC; | |
143d77c5 | 11523 | mips_abicalls = TRUE; |
252b5132 RH |
11524 | break; |
11525 | ||
861fb55a DJ |
11526 | case OPTION_CALL_NONPIC: |
11527 | if (!IS_ELF) | |
11528 | { | |
11529 | as_bad (_("-call_nonpic is supported only for ELF format")); | |
11530 | return 0; | |
11531 | } | |
11532 | mips_pic = NO_PIC; | |
11533 | mips_abicalls = TRUE; | |
11534 | break; | |
11535 | ||
252b5132 | 11536 | case OPTION_NON_SHARED: |
f43abd2b | 11537 | if (!IS_ELF) |
252b5132 RH |
11538 | { |
11539 | as_bad (_("-non_shared is supported only for ELF format")); | |
11540 | return 0; | |
11541 | } | |
11542 | mips_pic = NO_PIC; | |
143d77c5 | 11543 | mips_abicalls = FALSE; |
252b5132 RH |
11544 | break; |
11545 | ||
44075ae2 TS |
11546 | /* The -xgot option tells the assembler to use 32 bit offsets |
11547 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
11548 | compatibility. */ |
11549 | case OPTION_XGOT: | |
11550 | mips_big_got = 1; | |
11551 | break; | |
0f074f60 | 11552 | #endif /* OBJ_ELF */ |
252b5132 RH |
11553 | |
11554 | case 'G': | |
6caf9ef4 TS |
11555 | g_switch_value = atoi (arg); |
11556 | g_switch_seen = 1; | |
252b5132 RH |
11557 | break; |
11558 | ||
0f074f60 | 11559 | #ifdef OBJ_ELF |
34ba82a8 TS |
11560 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
11561 | and -mabi=64. */ | |
252b5132 | 11562 | case OPTION_32: |
f43abd2b | 11563 | if (!IS_ELF) |
34ba82a8 TS |
11564 | { |
11565 | as_bad (_("-32 is supported for ELF format only")); | |
11566 | return 0; | |
11567 | } | |
316f5878 | 11568 | mips_abi = O32_ABI; |
252b5132 RH |
11569 | break; |
11570 | ||
e013f690 | 11571 | case OPTION_N32: |
f43abd2b | 11572 | if (!IS_ELF) |
34ba82a8 TS |
11573 | { |
11574 | as_bad (_("-n32 is supported for ELF format only")); | |
11575 | return 0; | |
11576 | } | |
316f5878 | 11577 | mips_abi = N32_ABI; |
e013f690 | 11578 | break; |
252b5132 | 11579 | |
e013f690 | 11580 | case OPTION_64: |
f43abd2b | 11581 | if (!IS_ELF) |
34ba82a8 TS |
11582 | { |
11583 | as_bad (_("-64 is supported for ELF format only")); | |
11584 | return 0; | |
11585 | } | |
316f5878 | 11586 | mips_abi = N64_ABI; |
f43abd2b | 11587 | if (!support_64bit_objects()) |
e013f690 | 11588 | as_fatal (_("No compiled in support for 64 bit object file format")); |
252b5132 | 11589 | break; |
ae948b86 | 11590 | #endif /* OBJ_ELF */ |
252b5132 | 11591 | |
c97ef257 | 11592 | case OPTION_GP32: |
a325df1d | 11593 | file_mips_gp32 = 1; |
c97ef257 AH |
11594 | break; |
11595 | ||
11596 | case OPTION_GP64: | |
a325df1d | 11597 | file_mips_gp32 = 0; |
c97ef257 | 11598 | break; |
252b5132 | 11599 | |
ca4e0257 | 11600 | case OPTION_FP32: |
a325df1d | 11601 | file_mips_fp32 = 1; |
316f5878 RS |
11602 | break; |
11603 | ||
11604 | case OPTION_FP64: | |
11605 | file_mips_fp32 = 0; | |
ca4e0257 RS |
11606 | break; |
11607 | ||
037b32b9 AN |
11608 | case OPTION_SINGLE_FLOAT: |
11609 | file_mips_single_float = 1; | |
11610 | break; | |
11611 | ||
11612 | case OPTION_DOUBLE_FLOAT: | |
11613 | file_mips_single_float = 0; | |
11614 | break; | |
11615 | ||
11616 | case OPTION_SOFT_FLOAT: | |
11617 | file_mips_soft_float = 1; | |
11618 | break; | |
11619 | ||
11620 | case OPTION_HARD_FLOAT: | |
11621 | file_mips_soft_float = 0; | |
11622 | break; | |
11623 | ||
ae948b86 | 11624 | #ifdef OBJ_ELF |
252b5132 | 11625 | case OPTION_MABI: |
f43abd2b | 11626 | if (!IS_ELF) |
34ba82a8 TS |
11627 | { |
11628 | as_bad (_("-mabi is supported for ELF format only")); | |
11629 | return 0; | |
11630 | } | |
e013f690 | 11631 | if (strcmp (arg, "32") == 0) |
316f5878 | 11632 | mips_abi = O32_ABI; |
e013f690 | 11633 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 11634 | mips_abi = O64_ABI; |
e013f690 | 11635 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 11636 | mips_abi = N32_ABI; |
e013f690 TS |
11637 | else if (strcmp (arg, "64") == 0) |
11638 | { | |
316f5878 | 11639 | mips_abi = N64_ABI; |
e013f690 TS |
11640 | if (! support_64bit_objects()) |
11641 | as_fatal (_("No compiled in support for 64 bit object file " | |
11642 | "format")); | |
11643 | } | |
11644 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 11645 | mips_abi = EABI_ABI; |
e013f690 | 11646 | else |
da0e507f TS |
11647 | { |
11648 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
11649 | return 0; | |
11650 | } | |
252b5132 | 11651 | break; |
e013f690 | 11652 | #endif /* OBJ_ELF */ |
252b5132 | 11653 | |
6b76fefe | 11654 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 11655 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
11656 | break; |
11657 | ||
9ee72ff1 | 11658 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 11659 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
11660 | break; |
11661 | ||
ecb4347a DJ |
11662 | #ifdef OBJ_ELF |
11663 | case OPTION_MDEBUG: | |
b34976b6 | 11664 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
11665 | break; |
11666 | ||
11667 | case OPTION_NO_MDEBUG: | |
b34976b6 | 11668 | mips_flag_mdebug = FALSE; |
ecb4347a | 11669 | break; |
dcd410fe RO |
11670 | |
11671 | case OPTION_PDR: | |
11672 | mips_flag_pdr = TRUE; | |
11673 | break; | |
11674 | ||
11675 | case OPTION_NO_PDR: | |
11676 | mips_flag_pdr = FALSE; | |
11677 | break; | |
0a44bf69 RS |
11678 | |
11679 | case OPTION_MVXWORKS_PIC: | |
11680 | mips_pic = VXWORKS_PIC; | |
11681 | break; | |
ecb4347a DJ |
11682 | #endif /* OBJ_ELF */ |
11683 | ||
252b5132 RH |
11684 | default: |
11685 | return 0; | |
11686 | } | |
11687 | ||
11688 | return 1; | |
11689 | } | |
316f5878 RS |
11690 | \f |
11691 | /* Set up globals to generate code for the ISA or processor | |
11692 | described by INFO. */ | |
252b5132 | 11693 | |
252b5132 | 11694 | static void |
17a2f251 | 11695 | mips_set_architecture (const struct mips_cpu_info *info) |
252b5132 | 11696 | { |
316f5878 | 11697 | if (info != 0) |
252b5132 | 11698 | { |
fef14a42 TS |
11699 | file_mips_arch = info->cpu; |
11700 | mips_opts.arch = info->cpu; | |
316f5878 | 11701 | mips_opts.isa = info->isa; |
252b5132 | 11702 | } |
252b5132 RH |
11703 | } |
11704 | ||
252b5132 | 11705 | |
316f5878 | 11706 | /* Likewise for tuning. */ |
252b5132 | 11707 | |
316f5878 | 11708 | static void |
17a2f251 | 11709 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
11710 | { |
11711 | if (info != 0) | |
fef14a42 | 11712 | mips_tune = info->cpu; |
316f5878 | 11713 | } |
80cc45a5 | 11714 | |
34ba82a8 | 11715 | |
252b5132 | 11716 | void |
17a2f251 | 11717 | mips_after_parse_args (void) |
e9670677 | 11718 | { |
fef14a42 TS |
11719 | const struct mips_cpu_info *arch_info = 0; |
11720 | const struct mips_cpu_info *tune_info = 0; | |
11721 | ||
e9670677 | 11722 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 11723 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 11724 | { |
6caf9ef4 | 11725 | if (g_switch_seen && g_switch_value != 0) |
e9670677 MR |
11726 | as_bad (_("-G not supported in this configuration.")); |
11727 | g_switch_value = 0; | |
11728 | } | |
11729 | ||
cac012d6 AO |
11730 | if (mips_abi == NO_ABI) |
11731 | mips_abi = MIPS_DEFAULT_ABI; | |
11732 | ||
22923709 RS |
11733 | /* The following code determines the architecture and register size. |
11734 | Similar code was added to GCC 3.3 (see override_options() in | |
11735 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
11736 | as much as possible. */ | |
e9670677 | 11737 | |
316f5878 | 11738 | if (mips_arch_string != 0) |
fef14a42 | 11739 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 11740 | |
316f5878 | 11741 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 11742 | { |
316f5878 | 11743 | /* Handle -mipsN. At this point, file_mips_isa contains the |
fef14a42 | 11744 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 11745 | the -march selection (if any). */ |
fef14a42 | 11746 | if (arch_info != 0) |
e9670677 | 11747 | { |
316f5878 RS |
11748 | /* -march takes precedence over -mipsN, since it is more descriptive. |
11749 | There's no harm in specifying both as long as the ISA levels | |
11750 | are the same. */ | |
fef14a42 | 11751 | if (file_mips_isa != arch_info->isa) |
316f5878 RS |
11752 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), |
11753 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
fef14a42 | 11754 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 11755 | } |
316f5878 | 11756 | else |
fef14a42 | 11757 | arch_info = mips_cpu_info_from_isa (file_mips_isa); |
e9670677 MR |
11758 | } |
11759 | ||
fef14a42 TS |
11760 | if (arch_info == 0) |
11761 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
e9670677 | 11762 | |
fef14a42 | 11763 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
316f5878 | 11764 | as_bad ("-march=%s is not compatible with the selected ABI", |
fef14a42 TS |
11765 | arch_info->name); |
11766 | ||
11767 | mips_set_architecture (arch_info); | |
11768 | ||
11769 | /* Optimize for file_mips_arch, unless -mtune selects a different processor. */ | |
11770 | if (mips_tune_string != 0) | |
11771 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 11772 | |
fef14a42 TS |
11773 | if (tune_info == 0) |
11774 | mips_set_tune (arch_info); | |
11775 | else | |
11776 | mips_set_tune (tune_info); | |
e9670677 | 11777 | |
316f5878 | 11778 | if (file_mips_gp32 >= 0) |
e9670677 | 11779 | { |
316f5878 RS |
11780 | /* The user specified the size of the integer registers. Make sure |
11781 | it agrees with the ABI and ISA. */ | |
11782 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
11783 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
11784 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
11785 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
11786 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
11787 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
11788 | } |
11789 | else | |
11790 | { | |
316f5878 RS |
11791 | /* Infer the integer register size from the ABI and processor. |
11792 | Restrict ourselves to 32-bit registers if that's all the | |
11793 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
11794 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
11795 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
11796 | } |
11797 | ||
ad3fea08 TS |
11798 | switch (file_mips_fp32) |
11799 | { | |
11800 | default: | |
11801 | case -1: | |
11802 | /* No user specified float register size. | |
11803 | ??? GAS treats single-float processors as though they had 64-bit | |
11804 | float registers (although it complains when double-precision | |
11805 | instructions are used). As things stand, saying they have 32-bit | |
11806 | registers would lead to spurious "register must be even" messages. | |
11807 | So here we assume float registers are never smaller than the | |
11808 | integer ones. */ | |
11809 | if (file_mips_gp32 == 0) | |
11810 | /* 64-bit integer registers implies 64-bit float registers. */ | |
11811 | file_mips_fp32 = 0; | |
11812 | else if ((mips_opts.ase_mips3d > 0 || mips_opts.ase_mdmx > 0) | |
11813 | && ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
11814 | /* -mips3d and -mdmx imply 64-bit float registers, if possible. */ | |
11815 | file_mips_fp32 = 0; | |
11816 | else | |
11817 | /* 32-bit float registers. */ | |
11818 | file_mips_fp32 = 1; | |
11819 | break; | |
11820 | ||
11821 | /* The user specified the size of the float registers. Check if it | |
11822 | agrees with the ABI and ISA. */ | |
11823 | case 0: | |
11824 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
11825 | as_bad (_("-mfp64 used with a 32-bit fpu")); | |
11826 | else if (ABI_NEEDS_32BIT_REGS (mips_abi) | |
11827 | && !ISA_HAS_MXHC1 (mips_opts.isa)) | |
11828 | as_warn (_("-mfp64 used with a 32-bit ABI")); | |
11829 | break; | |
11830 | case 1: | |
11831 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
11832 | as_warn (_("-mfp32 used with a 64-bit ABI")); | |
11833 | break; | |
11834 | } | |
e9670677 | 11835 | |
316f5878 | 11836 | /* End of GCC-shared inference code. */ |
e9670677 | 11837 | |
17a2f251 TS |
11838 | /* This flag is set when we have a 64-bit capable CPU but use only |
11839 | 32-bit wide registers. Note that EABI does not use it. */ | |
11840 | if (ISA_HAS_64BIT_REGS (mips_opts.isa) | |
11841 | && ((mips_abi == NO_ABI && file_mips_gp32 == 1) | |
11842 | || mips_abi == O32_ABI)) | |
316f5878 | 11843 | mips_32bitmode = 1; |
e9670677 MR |
11844 | |
11845 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
11846 | as_bad (_("trap exception not supported at ISA 1")); | |
11847 | ||
e9670677 MR |
11848 | /* If the selected architecture includes support for ASEs, enable |
11849 | generation of code for them. */ | |
a4672219 | 11850 | if (mips_opts.mips16 == -1) |
fef14a42 | 11851 | mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_arch)) ? 1 : 0; |
ffdefa66 | 11852 | if (mips_opts.ase_mips3d == -1) |
65263ce3 | 11853 | mips_opts.ase_mips3d = ((arch_info->flags & MIPS_CPU_ASE_MIPS3D) |
ad3fea08 TS |
11854 | && file_mips_fp32 == 0) ? 1 : 0; |
11855 | if (mips_opts.ase_mips3d && file_mips_fp32 == 1) | |
11856 | as_bad (_("-mfp32 used with -mips3d")); | |
11857 | ||
ffdefa66 | 11858 | if (mips_opts.ase_mdmx == -1) |
65263ce3 | 11859 | mips_opts.ase_mdmx = ((arch_info->flags & MIPS_CPU_ASE_MDMX) |
ad3fea08 TS |
11860 | && file_mips_fp32 == 0) ? 1 : 0; |
11861 | if (mips_opts.ase_mdmx && file_mips_fp32 == 1) | |
11862 | as_bad (_("-mfp32 used with -mdmx")); | |
11863 | ||
11864 | if (mips_opts.ase_smartmips == -1) | |
11865 | mips_opts.ase_smartmips = (arch_info->flags & MIPS_CPU_ASE_SMARTMIPS) ? 1 : 0; | |
11866 | if (mips_opts.ase_smartmips && !ISA_SUPPORTS_SMARTMIPS) | |
11867 | as_warn ("%s ISA does not support SmartMIPS", | |
11868 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
11869 | ||
74cd071d | 11870 | if (mips_opts.ase_dsp == -1) |
ad3fea08 TS |
11871 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; |
11872 | if (mips_opts.ase_dsp && !ISA_SUPPORTS_DSP_ASE) | |
11873 | as_warn ("%s ISA does not support DSP ASE", | |
11874 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
11875 | ||
8b082fb1 TS |
11876 | if (mips_opts.ase_dspr2 == -1) |
11877 | { | |
11878 | mips_opts.ase_dspr2 = (arch_info->flags & MIPS_CPU_ASE_DSPR2) ? 1 : 0; | |
11879 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; | |
11880 | } | |
11881 | if (mips_opts.ase_dspr2 && !ISA_SUPPORTS_DSPR2_ASE) | |
11882 | as_warn ("%s ISA does not support DSP R2 ASE", | |
11883 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
11884 | ||
ef2e4d86 | 11885 | if (mips_opts.ase_mt == -1) |
ad3fea08 TS |
11886 | mips_opts.ase_mt = (arch_info->flags & MIPS_CPU_ASE_MT) ? 1 : 0; |
11887 | if (mips_opts.ase_mt && !ISA_SUPPORTS_MT_ASE) | |
8b082fb1 | 11888 | as_warn ("%s ISA does not support MT ASE", |
ad3fea08 | 11889 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
e9670677 | 11890 | |
e9670677 | 11891 | file_mips_isa = mips_opts.isa; |
a4672219 | 11892 | file_ase_mips16 = mips_opts.mips16; |
e9670677 MR |
11893 | file_ase_mips3d = mips_opts.ase_mips3d; |
11894 | file_ase_mdmx = mips_opts.ase_mdmx; | |
e16bfa71 | 11895 | file_ase_smartmips = mips_opts.ase_smartmips; |
74cd071d | 11896 | file_ase_dsp = mips_opts.ase_dsp; |
8b082fb1 | 11897 | file_ase_dspr2 = mips_opts.ase_dspr2; |
ef2e4d86 | 11898 | file_ase_mt = mips_opts.ase_mt; |
e9670677 MR |
11899 | mips_opts.gp32 = file_mips_gp32; |
11900 | mips_opts.fp32 = file_mips_fp32; | |
037b32b9 AN |
11901 | mips_opts.soft_float = file_mips_soft_float; |
11902 | mips_opts.single_float = file_mips_single_float; | |
e9670677 | 11903 | |
ecb4347a DJ |
11904 | if (mips_flag_mdebug < 0) |
11905 | { | |
11906 | #ifdef OBJ_MAYBE_ECOFF | |
11907 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
11908 | mips_flag_mdebug = 1; | |
11909 | else | |
11910 | #endif /* OBJ_MAYBE_ECOFF */ | |
11911 | mips_flag_mdebug = 0; | |
11912 | } | |
e9670677 MR |
11913 | } |
11914 | \f | |
11915 | void | |
17a2f251 | 11916 | mips_init_after_args (void) |
252b5132 RH |
11917 | { |
11918 | /* initialize opcodes */ | |
11919 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 11920 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
11921 | } |
11922 | ||
11923 | long | |
17a2f251 | 11924 | md_pcrel_from (fixS *fixP) |
252b5132 | 11925 | { |
a7ebbfdf TS |
11926 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
11927 | switch (fixP->fx_r_type) | |
11928 | { | |
11929 | case BFD_RELOC_16_PCREL_S2: | |
11930 | case BFD_RELOC_MIPS_JMP: | |
11931 | /* Return the address of the delay slot. */ | |
11932 | return addr + 4; | |
11933 | default: | |
58ea3d6a | 11934 | /* We have no relocation type for PC relative MIPS16 instructions. */ |
64817874 TS |
11935 | if (fixP->fx_addsy && S_GET_SEGMENT (fixP->fx_addsy) != now_seg) |
11936 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
11937 | _("PC relative MIPS16 instruction references a different section")); | |
a7ebbfdf TS |
11938 | return addr; |
11939 | } | |
252b5132 RH |
11940 | } |
11941 | ||
252b5132 RH |
11942 | /* This is called before the symbol table is processed. In order to |
11943 | work with gcc when using mips-tfile, we must keep all local labels. | |
11944 | However, in other cases, we want to discard them. If we were | |
11945 | called with -g, but we didn't see any debugging information, it may | |
11946 | mean that gcc is smuggling debugging information through to | |
11947 | mips-tfile, in which case we must generate all local labels. */ | |
11948 | ||
11949 | void | |
17a2f251 | 11950 | mips_frob_file_before_adjust (void) |
252b5132 RH |
11951 | { |
11952 | #ifndef NO_ECOFF_DEBUGGING | |
11953 | if (ECOFF_DEBUGGING | |
11954 | && mips_debug != 0 | |
11955 | && ! ecoff_debugging_seen) | |
11956 | flag_keep_locals = 1; | |
11957 | #endif | |
11958 | } | |
11959 | ||
3b91255e | 11960 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 11961 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
11962 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
11963 | relocation operators. | |
11964 | ||
11965 | For our purposes, a %lo() expression matches a %got() or %hi() | |
11966 | expression if: | |
11967 | ||
11968 | (a) it refers to the same symbol; and | |
11969 | (b) the offset applied in the %lo() expression is no lower than | |
11970 | the offset applied in the %got() or %hi(). | |
11971 | ||
11972 | (b) allows us to cope with code like: | |
11973 | ||
11974 | lui $4,%hi(foo) | |
11975 | lh $4,%lo(foo+2)($4) | |
11976 | ||
11977 | ...which is legal on RELA targets, and has a well-defined behaviour | |
11978 | if the user knows that adding 2 to "foo" will not induce a carry to | |
11979 | the high 16 bits. | |
11980 | ||
11981 | When several %lo()s match a particular %got() or %hi(), we use the | |
11982 | following rules to distinguish them: | |
11983 | ||
11984 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
11985 | higher offsets. | |
11986 | ||
11987 | (2) %lo()s with no matching %got() or %hi() are better than those | |
11988 | that already have a matching %got() or %hi(). | |
11989 | ||
11990 | (3) later %lo()s are better than earlier %lo()s. | |
11991 | ||
11992 | These rules are applied in order. | |
11993 | ||
11994 | (1) means, among other things, that %lo()s with identical offsets are | |
11995 | chosen if they exist. | |
11996 | ||
11997 | (2) means that we won't associate several high-part relocations with | |
11998 | the same low-part relocation unless there's no alternative. Having | |
11999 | several high parts for the same low part is a GNU extension; this rule | |
12000 | allows careful users to avoid it. | |
12001 | ||
12002 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
12003 | with the last high-part relocation being at the front of the list. | |
12004 | It therefore makes sense to choose the last matching low-part | |
12005 | relocation, all other things being equal. It's also easier | |
12006 | to code that way. */ | |
252b5132 RH |
12007 | |
12008 | void | |
17a2f251 | 12009 | mips_frob_file (void) |
252b5132 RH |
12010 | { |
12011 | struct mips_hi_fixup *l; | |
35903be0 | 12012 | bfd_reloc_code_real_type looking_for_rtype = BFD_RELOC_UNUSED; |
252b5132 RH |
12013 | |
12014 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
12015 | { | |
12016 | segment_info_type *seginfo; | |
3b91255e RS |
12017 | bfd_boolean matched_lo_p; |
12018 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 12019 | |
5919d012 | 12020 | assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 12021 | |
5919d012 RS |
12022 | /* If a GOT16 relocation turns out to be against a global symbol, |
12023 | there isn't supposed to be a matching LO. */ | |
738e5348 | 12024 | if (got16_reloc_p (l->fixp->fx_r_type) |
5919d012 RS |
12025 | && !pic_need_relax (l->fixp->fx_addsy, l->seg)) |
12026 | continue; | |
12027 | ||
12028 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
12029 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
12030 | continue; |
12031 | ||
252b5132 | 12032 | seginfo = seg_info (l->seg); |
252b5132 | 12033 | |
3b91255e RS |
12034 | /* Set HI_POS to the position of this relocation in the chain. |
12035 | Set LO_POS to the position of the chosen low-part relocation. | |
12036 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
12037 | relocation that matches an immediately-preceding high-part | |
12038 | relocation. */ | |
12039 | hi_pos = NULL; | |
12040 | lo_pos = NULL; | |
12041 | matched_lo_p = FALSE; | |
738e5348 | 12042 | looking_for_rtype = matching_lo_reloc (l->fixp->fx_r_type); |
35903be0 | 12043 | |
3b91255e RS |
12044 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) |
12045 | { | |
12046 | if (*pos == l->fixp) | |
12047 | hi_pos = pos; | |
12048 | ||
35903be0 | 12049 | if ((*pos)->fx_r_type == looking_for_rtype |
3b91255e RS |
12050 | && (*pos)->fx_addsy == l->fixp->fx_addsy |
12051 | && (*pos)->fx_offset >= l->fixp->fx_offset | |
12052 | && (lo_pos == NULL | |
12053 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
12054 | || (!matched_lo_p | |
12055 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
12056 | lo_pos = pos; | |
12057 | ||
12058 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
12059 | && fixup_has_matching_lo_p (*pos)); | |
12060 | } | |
12061 | ||
12062 | /* If we found a match, remove the high-part relocation from its | |
12063 | current position and insert it before the low-part relocation. | |
12064 | Make the offsets match so that fixup_has_matching_lo_p() | |
12065 | will return true. | |
12066 | ||
12067 | We don't warn about unmatched high-part relocations since some | |
12068 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
12069 | instructions. */ | |
12070 | if (lo_pos != NULL) | |
12071 | { | |
12072 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
12073 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 12074 | { |
3b91255e RS |
12075 | *hi_pos = l->fixp->fx_next; |
12076 | l->fixp->fx_next = *lo_pos; | |
12077 | *lo_pos = l->fixp; | |
252b5132 | 12078 | } |
252b5132 RH |
12079 | } |
12080 | } | |
12081 | } | |
12082 | ||
3e722fb5 | 12083 | /* We may have combined relocations without symbols in the N32/N64 ABI. |
f6688943 | 12084 | We have to prevent gas from dropping them. */ |
252b5132 | 12085 | |
252b5132 | 12086 | int |
17a2f251 | 12087 | mips_force_relocation (fixS *fixp) |
252b5132 | 12088 | { |
ae6063d4 | 12089 | if (generic_force_reloc (fixp)) |
252b5132 RH |
12090 | return 1; |
12091 | ||
f6688943 TS |
12092 | if (HAVE_NEWABI |
12093 | && S_GET_SEGMENT (fixp->fx_addsy) == bfd_abs_section_ptr | |
12094 | && (fixp->fx_r_type == BFD_RELOC_MIPS_SUB | |
738e5348 RS |
12095 | || hi16_reloc_p (fixp->fx_r_type) |
12096 | || lo16_reloc_p (fixp->fx_r_type))) | |
f6688943 TS |
12097 | return 1; |
12098 | ||
3e722fb5 | 12099 | return 0; |
252b5132 RH |
12100 | } |
12101 | ||
12102 | /* Apply a fixup to the object file. */ | |
12103 | ||
94f592af | 12104 | void |
55cf6793 | 12105 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 12106 | { |
874e8986 | 12107 | bfd_byte *buf; |
98aa84af | 12108 | long insn; |
a7ebbfdf | 12109 | reloc_howto_type *howto; |
252b5132 | 12110 | |
a7ebbfdf TS |
12111 | /* We ignore generic BFD relocations we don't know about. */ |
12112 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
12113 | if (! howto) | |
12114 | return; | |
65551fa4 | 12115 | |
252b5132 RH |
12116 | assert (fixP->fx_size == 4 |
12117 | || fixP->fx_r_type == BFD_RELOC_16 | |
12118 | || fixP->fx_r_type == BFD_RELOC_64 | |
f6688943 TS |
12119 | || fixP->fx_r_type == BFD_RELOC_CTOR |
12120 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
252b5132 | 12121 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
741d6ea8 JM |
12122 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
12123 | || fixP->fx_r_type == BFD_RELOC_MIPS_TLS_DTPREL64); | |
252b5132 | 12124 | |
a7ebbfdf | 12125 | buf = (bfd_byte *) (fixP->fx_frag->fr_literal + fixP->fx_where); |
252b5132 | 12126 | |
3994f87e | 12127 | assert (!fixP->fx_pcrel || fixP->fx_r_type == BFD_RELOC_16_PCREL_S2); |
b1dca8ee RS |
12128 | |
12129 | /* Don't treat parts of a composite relocation as done. There are two | |
12130 | reasons for this: | |
12131 | ||
12132 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
12133 | should nevertheless be emitted if the first part is. | |
12134 | ||
12135 | (2) In normal usage, composite relocations are never assembly-time | |
12136 | constants. The easiest way of dealing with the pathological | |
12137 | exceptions is to generate a relocation against STN_UNDEF and | |
12138 | leave everything up to the linker. */ | |
3994f87e | 12139 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
12140 | fixP->fx_done = 1; |
12141 | ||
12142 | switch (fixP->fx_r_type) | |
12143 | { | |
3f98094e DJ |
12144 | case BFD_RELOC_MIPS_TLS_GD: |
12145 | case BFD_RELOC_MIPS_TLS_LDM: | |
741d6ea8 JM |
12146 | case BFD_RELOC_MIPS_TLS_DTPREL32: |
12147 | case BFD_RELOC_MIPS_TLS_DTPREL64: | |
3f98094e DJ |
12148 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: |
12149 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
12150 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
12151 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: | |
12152 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
12153 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
12154 | /* fall through */ | |
12155 | ||
252b5132 | 12156 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
12157 | case BFD_RELOC_MIPS_SHIFT5: |
12158 | case BFD_RELOC_MIPS_SHIFT6: | |
12159 | case BFD_RELOC_MIPS_GOT_DISP: | |
12160 | case BFD_RELOC_MIPS_GOT_PAGE: | |
12161 | case BFD_RELOC_MIPS_GOT_OFST: | |
12162 | case BFD_RELOC_MIPS_SUB: | |
12163 | case BFD_RELOC_MIPS_INSERT_A: | |
12164 | case BFD_RELOC_MIPS_INSERT_B: | |
12165 | case BFD_RELOC_MIPS_DELETE: | |
12166 | case BFD_RELOC_MIPS_HIGHEST: | |
12167 | case BFD_RELOC_MIPS_HIGHER: | |
12168 | case BFD_RELOC_MIPS_SCN_DISP: | |
12169 | case BFD_RELOC_MIPS_REL16: | |
12170 | case BFD_RELOC_MIPS_RELGOT: | |
12171 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
12172 | case BFD_RELOC_HI16: |
12173 | case BFD_RELOC_HI16_S: | |
cdf6fd85 | 12174 | case BFD_RELOC_GPREL16: |
252b5132 RH |
12175 | case BFD_RELOC_MIPS_LITERAL: |
12176 | case BFD_RELOC_MIPS_CALL16: | |
12177 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 12178 | case BFD_RELOC_GPREL32: |
252b5132 RH |
12179 | case BFD_RELOC_MIPS_GOT_HI16: |
12180 | case BFD_RELOC_MIPS_GOT_LO16: | |
12181 | case BFD_RELOC_MIPS_CALL_HI16: | |
12182 | case BFD_RELOC_MIPS_CALL_LO16: | |
12183 | case BFD_RELOC_MIPS16_GPREL: | |
738e5348 RS |
12184 | case BFD_RELOC_MIPS16_GOT16: |
12185 | case BFD_RELOC_MIPS16_CALL16: | |
d6f16593 MR |
12186 | case BFD_RELOC_MIPS16_HI16: |
12187 | case BFD_RELOC_MIPS16_HI16_S: | |
252b5132 | 12188 | case BFD_RELOC_MIPS16_JMP: |
54f4ddb3 | 12189 | /* Nothing needed to do. The value comes from the reloc entry. */ |
252b5132 RH |
12190 | break; |
12191 | ||
252b5132 RH |
12192 | case BFD_RELOC_64: |
12193 | /* This is handled like BFD_RELOC_32, but we output a sign | |
12194 | extended value if we are only 32 bits. */ | |
3e722fb5 | 12195 | if (fixP->fx_done) |
252b5132 RH |
12196 | { |
12197 | if (8 <= sizeof (valueT)) | |
2132e3a3 | 12198 | md_number_to_chars ((char *) buf, *valP, 8); |
252b5132 RH |
12199 | else |
12200 | { | |
a7ebbfdf | 12201 | valueT hiv; |
252b5132 | 12202 | |
a7ebbfdf | 12203 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
12204 | hiv = 0xffffffff; |
12205 | else | |
12206 | hiv = 0; | |
b215186b | 12207 | md_number_to_chars ((char *)(buf + (target_big_endian ? 4 : 0)), |
a7ebbfdf | 12208 | *valP, 4); |
b215186b | 12209 | md_number_to_chars ((char *)(buf + (target_big_endian ? 0 : 4)), |
a7ebbfdf | 12210 | hiv, 4); |
252b5132 RH |
12211 | } |
12212 | } | |
12213 | break; | |
12214 | ||
056350c6 | 12215 | case BFD_RELOC_RVA: |
252b5132 | 12216 | case BFD_RELOC_32: |
252b5132 RH |
12217 | case BFD_RELOC_16: |
12218 | /* If we are deleting this reloc entry, we must fill in the | |
54f4ddb3 TS |
12219 | value now. This can happen if we have a .word which is not |
12220 | resolved when it appears but is later defined. */ | |
252b5132 | 12221 | if (fixP->fx_done) |
54f4ddb3 | 12222 | md_number_to_chars ((char *) buf, *valP, fixP->fx_size); |
252b5132 RH |
12223 | break; |
12224 | ||
12225 | case BFD_RELOC_LO16: | |
d6f16593 | 12226 | case BFD_RELOC_MIPS16_LO16: |
3e722fb5 CD |
12227 | /* FIXME: Now that embedded-PIC is gone, some of this code/comment |
12228 | may be safe to remove, but if so it's not obvious. */ | |
252b5132 RH |
12229 | /* When handling an embedded PIC switch statement, we can wind |
12230 | up deleting a LO16 reloc. See the 'o' case in mips_ip. */ | |
12231 | if (fixP->fx_done) | |
12232 | { | |
a7ebbfdf | 12233 | if (*valP + 0x8000 > 0xffff) |
252b5132 RH |
12234 | as_bad_where (fixP->fx_file, fixP->fx_line, |
12235 | _("relocation overflow")); | |
252b5132 RH |
12236 | if (target_big_endian) |
12237 | buf += 2; | |
2132e3a3 | 12238 | md_number_to_chars ((char *) buf, *valP, 2); |
252b5132 RH |
12239 | } |
12240 | break; | |
12241 | ||
12242 | case BFD_RELOC_16_PCREL_S2: | |
a7ebbfdf | 12243 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 12244 | as_bad_where (fixP->fx_file, fixP->fx_line, |
bad36eac | 12245 | _("Branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 12246 | |
54f4ddb3 TS |
12247 | /* We need to save the bits in the instruction since fixup_segment() |
12248 | might be deleting the relocation entry (i.e., a branch within | |
12249 | the current segment). */ | |
a7ebbfdf | 12250 | if (! fixP->fx_done) |
bb2d6cd7 | 12251 | break; |
252b5132 | 12252 | |
54f4ddb3 | 12253 | /* Update old instruction data. */ |
252b5132 RH |
12254 | if (target_big_endian) |
12255 | insn = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
12256 | else | |
12257 | insn = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | |
12258 | ||
a7ebbfdf TS |
12259 | if (*valP + 0x20000 <= 0x3ffff) |
12260 | { | |
12261 | insn |= (*valP >> 2) & 0xffff; | |
2132e3a3 | 12262 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
12263 | } |
12264 | else if (mips_pic == NO_PIC | |
12265 | && fixP->fx_done | |
12266 | && fixP->fx_frag->fr_address >= text_section->vma | |
12267 | && (fixP->fx_frag->fr_address | |
587aac4e | 12268 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
12269 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
12270 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
12271 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
12272 | { |
12273 | /* The branch offset is too large. If this is an | |
12274 | unconditional branch, and we are not generating PIC code, | |
12275 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
12276 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
12277 | insn = 0x0c000000; /* jal */ | |
252b5132 | 12278 | else |
a7ebbfdf TS |
12279 | insn = 0x08000000; /* j */ |
12280 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
12281 | fixP->fx_done = 0; | |
12282 | fixP->fx_addsy = section_symbol (text_section); | |
12283 | *valP += md_pcrel_from (fixP); | |
2132e3a3 | 12284 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
12285 | } |
12286 | else | |
12287 | { | |
12288 | /* If we got here, we have branch-relaxation disabled, | |
12289 | and there's nothing we can do to fix this instruction | |
12290 | without turning it into a longer sequence. */ | |
12291 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
12292 | _("Branch out of range")); | |
252b5132 | 12293 | } |
252b5132 RH |
12294 | break; |
12295 | ||
12296 | case BFD_RELOC_VTABLE_INHERIT: | |
12297 | fixP->fx_done = 0; | |
12298 | if (fixP->fx_addsy | |
12299 | && !S_IS_DEFINED (fixP->fx_addsy) | |
12300 | && !S_IS_WEAK (fixP->fx_addsy)) | |
12301 | S_SET_WEAK (fixP->fx_addsy); | |
12302 | break; | |
12303 | ||
12304 | case BFD_RELOC_VTABLE_ENTRY: | |
12305 | fixP->fx_done = 0; | |
12306 | break; | |
12307 | ||
12308 | default: | |
12309 | internalError (); | |
12310 | } | |
a7ebbfdf TS |
12311 | |
12312 | /* Remember value for tc_gen_reloc. */ | |
12313 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
12314 | } |
12315 | ||
252b5132 | 12316 | static symbolS * |
17a2f251 | 12317 | get_symbol (void) |
252b5132 RH |
12318 | { |
12319 | int c; | |
12320 | char *name; | |
12321 | symbolS *p; | |
12322 | ||
12323 | name = input_line_pointer; | |
12324 | c = get_symbol_end (); | |
12325 | p = (symbolS *) symbol_find_or_make (name); | |
12326 | *input_line_pointer = c; | |
12327 | return p; | |
12328 | } | |
12329 | ||
742a56fe RS |
12330 | /* Align the current frag to a given power of two. If a particular |
12331 | fill byte should be used, FILL points to an integer that contains | |
12332 | that byte, otherwise FILL is null. | |
12333 | ||
12334 | The MIPS assembler also automatically adjusts any preceding | |
12335 | label. */ | |
252b5132 RH |
12336 | |
12337 | static void | |
742a56fe | 12338 | mips_align (int to, int *fill, symbolS *label) |
252b5132 | 12339 | { |
7d10b47d | 12340 | mips_emit_delays (); |
742a56fe RS |
12341 | mips_record_mips16_mode (); |
12342 | if (fill == NULL && subseg_text_p (now_seg)) | |
12343 | frag_align_code (to, 0); | |
12344 | else | |
12345 | frag_align (to, fill ? *fill : 0, 0); | |
252b5132 RH |
12346 | record_alignment (now_seg, to); |
12347 | if (label != NULL) | |
12348 | { | |
12349 | assert (S_GET_SEGMENT (label) == now_seg); | |
49309057 | 12350 | symbol_set_frag (label, frag_now); |
252b5132 RH |
12351 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
12352 | } | |
12353 | } | |
12354 | ||
12355 | /* Align to a given power of two. .align 0 turns off the automatic | |
12356 | alignment used by the data creating pseudo-ops. */ | |
12357 | ||
12358 | static void | |
17a2f251 | 12359 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 12360 | { |
742a56fe | 12361 | int temp, fill_value, *fill_ptr; |
49954fb4 | 12362 | long max_alignment = 28; |
252b5132 | 12363 | |
54f4ddb3 | 12364 | /* o Note that the assembler pulls down any immediately preceding label |
252b5132 | 12365 | to the aligned address. |
54f4ddb3 | 12366 | o It's not documented but auto alignment is reinstated by |
252b5132 | 12367 | a .align pseudo instruction. |
54f4ddb3 | 12368 | o Note also that after auto alignment is turned off the mips assembler |
252b5132 | 12369 | issues an error on attempt to assemble an improperly aligned data item. |
54f4ddb3 | 12370 | We don't. */ |
252b5132 RH |
12371 | |
12372 | temp = get_absolute_expression (); | |
12373 | if (temp > max_alignment) | |
12374 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
12375 | else if (temp < 0) | |
12376 | { | |
12377 | as_warn (_("Alignment negative: 0 assumed.")); | |
12378 | temp = 0; | |
12379 | } | |
12380 | if (*input_line_pointer == ',') | |
12381 | { | |
f9419b05 | 12382 | ++input_line_pointer; |
742a56fe RS |
12383 | fill_value = get_absolute_expression (); |
12384 | fill_ptr = &fill_value; | |
252b5132 RH |
12385 | } |
12386 | else | |
742a56fe | 12387 | fill_ptr = 0; |
252b5132 RH |
12388 | if (temp) |
12389 | { | |
a8dbcb85 TS |
12390 | segment_info_type *si = seg_info (now_seg); |
12391 | struct insn_label_list *l = si->label_list; | |
54f4ddb3 | 12392 | /* Auto alignment should be switched on by next section change. */ |
252b5132 | 12393 | auto_align = 1; |
742a56fe | 12394 | mips_align (temp, fill_ptr, l != NULL ? l->label : NULL); |
252b5132 RH |
12395 | } |
12396 | else | |
12397 | { | |
12398 | auto_align = 0; | |
12399 | } | |
12400 | ||
12401 | demand_empty_rest_of_line (); | |
12402 | } | |
12403 | ||
252b5132 | 12404 | static void |
17a2f251 | 12405 | s_change_sec (int sec) |
252b5132 RH |
12406 | { |
12407 | segT seg; | |
12408 | ||
252b5132 RH |
12409 | #ifdef OBJ_ELF |
12410 | /* The ELF backend needs to know that we are changing sections, so | |
12411 | that .previous works correctly. We could do something like check | |
b6ff326e | 12412 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
12413 | as it would not be appropriate to use it in the section changing |
12414 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
12415 | This should be cleaner, somehow. */ | |
f43abd2b TS |
12416 | if (IS_ELF) |
12417 | obj_elf_section_change_hook (); | |
252b5132 RH |
12418 | #endif |
12419 | ||
7d10b47d | 12420 | mips_emit_delays (); |
252b5132 RH |
12421 | switch (sec) |
12422 | { | |
12423 | case 't': | |
12424 | s_text (0); | |
12425 | break; | |
12426 | case 'd': | |
12427 | s_data (0); | |
12428 | break; | |
12429 | case 'b': | |
12430 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
12431 | demand_empty_rest_of_line (); | |
12432 | break; | |
12433 | ||
12434 | case 'r': | |
4d0d148d TS |
12435 | seg = subseg_new (RDATA_SECTION_NAME, |
12436 | (subsegT) get_absolute_expression ()); | |
f43abd2b | 12437 | if (IS_ELF) |
252b5132 | 12438 | { |
4d0d148d TS |
12439 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
12440 | | SEC_READONLY | SEC_RELOC | |
12441 | | SEC_DATA)); | |
c41e87e3 | 12442 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 12443 | record_alignment (seg, 4); |
252b5132 | 12444 | } |
4d0d148d | 12445 | demand_empty_rest_of_line (); |
252b5132 RH |
12446 | break; |
12447 | ||
12448 | case 's': | |
4d0d148d | 12449 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
f43abd2b | 12450 | if (IS_ELF) |
252b5132 | 12451 | { |
4d0d148d TS |
12452 | bfd_set_section_flags (stdoutput, seg, |
12453 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
c41e87e3 | 12454 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 12455 | record_alignment (seg, 4); |
252b5132 | 12456 | } |
4d0d148d TS |
12457 | demand_empty_rest_of_line (); |
12458 | break; | |
252b5132 RH |
12459 | } |
12460 | ||
12461 | auto_align = 1; | |
12462 | } | |
b34976b6 | 12463 | |
cca86cc8 | 12464 | void |
17a2f251 | 12465 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 12466 | { |
7ed4a06a | 12467 | #ifdef OBJ_ELF |
cca86cc8 SC |
12468 | char *section_name; |
12469 | char c; | |
684022ea | 12470 | char next_c = 0; |
cca86cc8 SC |
12471 | int section_type; |
12472 | int section_flag; | |
12473 | int section_entry_size; | |
12474 | int section_alignment; | |
b34976b6 | 12475 | |
f43abd2b | 12476 | if (!IS_ELF) |
7ed4a06a TS |
12477 | return; |
12478 | ||
cca86cc8 SC |
12479 | section_name = input_line_pointer; |
12480 | c = get_symbol_end (); | |
a816d1ed AO |
12481 | if (c) |
12482 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 12483 | |
4cf0dd0d TS |
12484 | /* Do we have .section Name<,"flags">? */ |
12485 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 12486 | { |
4cf0dd0d TS |
12487 | /* just after name is now '\0'. */ |
12488 | *input_line_pointer = c; | |
cca86cc8 SC |
12489 | input_line_pointer = section_name; |
12490 | obj_elf_section (ignore); | |
12491 | return; | |
12492 | } | |
12493 | input_line_pointer++; | |
12494 | ||
12495 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
12496 | if (c == ',') | |
12497 | section_type = get_absolute_expression (); | |
12498 | else | |
12499 | section_type = 0; | |
12500 | if (*input_line_pointer++ == ',') | |
12501 | section_flag = get_absolute_expression (); | |
12502 | else | |
12503 | section_flag = 0; | |
12504 | if (*input_line_pointer++ == ',') | |
12505 | section_entry_size = get_absolute_expression (); | |
12506 | else | |
12507 | section_entry_size = 0; | |
12508 | if (*input_line_pointer++ == ',') | |
12509 | section_alignment = get_absolute_expression (); | |
12510 | else | |
12511 | section_alignment = 0; | |
12512 | ||
a816d1ed AO |
12513 | section_name = xstrdup (section_name); |
12514 | ||
8ab8a5c8 RS |
12515 | /* When using the generic form of .section (as implemented by obj-elf.c), |
12516 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
12517 | traditionally had to fall back on the more common @progbits instead. | |
12518 | ||
12519 | There's nothing really harmful in this, since bfd will correct | |
12520 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 12521 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
12522 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
12523 | ||
12524 | Even so, we shouldn't force users of the MIPS .section syntax to | |
12525 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
12526 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
12527 | generic type-checking code. */ | |
12528 | if (section_type == SHT_MIPS_DWARF) | |
12529 | section_type = SHT_PROGBITS; | |
12530 | ||
cca86cc8 SC |
12531 | obj_elf_change_section (section_name, section_type, section_flag, |
12532 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
12533 | |
12534 | if (now_seg->name != section_name) | |
12535 | free (section_name); | |
7ed4a06a | 12536 | #endif /* OBJ_ELF */ |
cca86cc8 | 12537 | } |
252b5132 RH |
12538 | |
12539 | void | |
17a2f251 | 12540 | mips_enable_auto_align (void) |
252b5132 RH |
12541 | { |
12542 | auto_align = 1; | |
12543 | } | |
12544 | ||
12545 | static void | |
17a2f251 | 12546 | s_cons (int log_size) |
252b5132 | 12547 | { |
a8dbcb85 TS |
12548 | segment_info_type *si = seg_info (now_seg); |
12549 | struct insn_label_list *l = si->label_list; | |
252b5132 RH |
12550 | symbolS *label; |
12551 | ||
a8dbcb85 | 12552 | label = l != NULL ? l->label : NULL; |
7d10b47d | 12553 | mips_emit_delays (); |
252b5132 RH |
12554 | if (log_size > 0 && auto_align) |
12555 | mips_align (log_size, 0, label); | |
12556 | mips_clear_insn_labels (); | |
12557 | cons (1 << log_size); | |
12558 | } | |
12559 | ||
12560 | static void | |
17a2f251 | 12561 | s_float_cons (int type) |
252b5132 | 12562 | { |
a8dbcb85 TS |
12563 | segment_info_type *si = seg_info (now_seg); |
12564 | struct insn_label_list *l = si->label_list; | |
252b5132 RH |
12565 | symbolS *label; |
12566 | ||
a8dbcb85 | 12567 | label = l != NULL ? l->label : NULL; |
252b5132 | 12568 | |
7d10b47d | 12569 | mips_emit_delays (); |
252b5132 RH |
12570 | |
12571 | if (auto_align) | |
49309057 ILT |
12572 | { |
12573 | if (type == 'd') | |
12574 | mips_align (3, 0, label); | |
12575 | else | |
12576 | mips_align (2, 0, label); | |
12577 | } | |
252b5132 RH |
12578 | |
12579 | mips_clear_insn_labels (); | |
12580 | ||
12581 | float_cons (type); | |
12582 | } | |
12583 | ||
12584 | /* Handle .globl. We need to override it because on Irix 5 you are | |
12585 | permitted to say | |
12586 | .globl foo .text | |
12587 | where foo is an undefined symbol, to mean that foo should be | |
12588 | considered to be the address of a function. */ | |
12589 | ||
12590 | static void | |
17a2f251 | 12591 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12592 | { |
12593 | char *name; | |
12594 | int c; | |
12595 | symbolS *symbolP; | |
12596 | flagword flag; | |
12597 | ||
8a06b769 | 12598 | do |
252b5132 | 12599 | { |
8a06b769 | 12600 | name = input_line_pointer; |
252b5132 | 12601 | c = get_symbol_end (); |
8a06b769 TS |
12602 | symbolP = symbol_find_or_make (name); |
12603 | S_SET_EXTERNAL (symbolP); | |
12604 | ||
252b5132 | 12605 | *input_line_pointer = c; |
8a06b769 | 12606 | SKIP_WHITESPACE (); |
252b5132 | 12607 | |
8a06b769 TS |
12608 | /* On Irix 5, every global symbol that is not explicitly labelled as |
12609 | being a function is apparently labelled as being an object. */ | |
12610 | flag = BSF_OBJECT; | |
252b5132 | 12611 | |
8a06b769 TS |
12612 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
12613 | && (*input_line_pointer != ',')) | |
12614 | { | |
12615 | char *secname; | |
12616 | asection *sec; | |
12617 | ||
12618 | secname = input_line_pointer; | |
12619 | c = get_symbol_end (); | |
12620 | sec = bfd_get_section_by_name (stdoutput, secname); | |
12621 | if (sec == NULL) | |
12622 | as_bad (_("%s: no such section"), secname); | |
12623 | *input_line_pointer = c; | |
12624 | ||
12625 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
12626 | flag = BSF_FUNCTION; | |
12627 | } | |
12628 | ||
12629 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
12630 | ||
12631 | c = *input_line_pointer; | |
12632 | if (c == ',') | |
12633 | { | |
12634 | input_line_pointer++; | |
12635 | SKIP_WHITESPACE (); | |
12636 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
12637 | c = '\n'; | |
12638 | } | |
12639 | } | |
12640 | while (c == ','); | |
252b5132 | 12641 | |
252b5132 RH |
12642 | demand_empty_rest_of_line (); |
12643 | } | |
12644 | ||
12645 | static void | |
17a2f251 | 12646 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12647 | { |
12648 | char *opt; | |
12649 | char c; | |
12650 | ||
12651 | opt = input_line_pointer; | |
12652 | c = get_symbol_end (); | |
12653 | ||
12654 | if (*opt == 'O') | |
12655 | { | |
12656 | /* FIXME: What does this mean? */ | |
12657 | } | |
12658 | else if (strncmp (opt, "pic", 3) == 0) | |
12659 | { | |
12660 | int i; | |
12661 | ||
12662 | i = atoi (opt + 3); | |
12663 | if (i == 0) | |
12664 | mips_pic = NO_PIC; | |
12665 | else if (i == 2) | |
143d77c5 | 12666 | { |
252b5132 | 12667 | mips_pic = SVR4_PIC; |
143d77c5 EC |
12668 | mips_abicalls = TRUE; |
12669 | } | |
252b5132 RH |
12670 | else |
12671 | as_bad (_(".option pic%d not supported"), i); | |
12672 | ||
4d0d148d | 12673 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
12674 | { |
12675 | if (g_switch_seen && g_switch_value != 0) | |
12676 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
12677 | g_switch_value = 0; | |
12678 | bfd_set_gp_size (stdoutput, 0); | |
12679 | } | |
12680 | } | |
12681 | else | |
12682 | as_warn (_("Unrecognized option \"%s\""), opt); | |
12683 | ||
12684 | *input_line_pointer = c; | |
12685 | demand_empty_rest_of_line (); | |
12686 | } | |
12687 | ||
12688 | /* This structure is used to hold a stack of .set values. */ | |
12689 | ||
e972090a NC |
12690 | struct mips_option_stack |
12691 | { | |
252b5132 RH |
12692 | struct mips_option_stack *next; |
12693 | struct mips_set_options options; | |
12694 | }; | |
12695 | ||
12696 | static struct mips_option_stack *mips_opts_stack; | |
12697 | ||
12698 | /* Handle the .set pseudo-op. */ | |
12699 | ||
12700 | static void | |
17a2f251 | 12701 | s_mipsset (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12702 | { |
12703 | char *name = input_line_pointer, ch; | |
12704 | ||
12705 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 12706 | ++input_line_pointer; |
252b5132 RH |
12707 | ch = *input_line_pointer; |
12708 | *input_line_pointer = '\0'; | |
12709 | ||
12710 | if (strcmp (name, "reorder") == 0) | |
12711 | { | |
7d10b47d RS |
12712 | if (mips_opts.noreorder) |
12713 | end_noreorder (); | |
252b5132 RH |
12714 | } |
12715 | else if (strcmp (name, "noreorder") == 0) | |
12716 | { | |
7d10b47d RS |
12717 | if (!mips_opts.noreorder) |
12718 | start_noreorder (); | |
252b5132 | 12719 | } |
741fe287 MR |
12720 | else if (strncmp (name, "at=", 3) == 0) |
12721 | { | |
12722 | char *s = name + 3; | |
12723 | ||
12724 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, &mips_opts.at)) | |
12725 | as_bad (_("Unrecognized register name `%s'"), s); | |
12726 | } | |
252b5132 RH |
12727 | else if (strcmp (name, "at") == 0) |
12728 | { | |
741fe287 | 12729 | mips_opts.at = ATREG; |
252b5132 RH |
12730 | } |
12731 | else if (strcmp (name, "noat") == 0) | |
12732 | { | |
741fe287 | 12733 | mips_opts.at = ZERO; |
252b5132 RH |
12734 | } |
12735 | else if (strcmp (name, "macro") == 0) | |
12736 | { | |
12737 | mips_opts.warn_about_macros = 0; | |
12738 | } | |
12739 | else if (strcmp (name, "nomacro") == 0) | |
12740 | { | |
12741 | if (mips_opts.noreorder == 0) | |
12742 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
12743 | mips_opts.warn_about_macros = 1; | |
12744 | } | |
12745 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
12746 | { | |
12747 | mips_opts.nomove = 0; | |
12748 | } | |
12749 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
12750 | { | |
12751 | mips_opts.nomove = 1; | |
12752 | } | |
12753 | else if (strcmp (name, "bopt") == 0) | |
12754 | { | |
12755 | mips_opts.nobopt = 0; | |
12756 | } | |
12757 | else if (strcmp (name, "nobopt") == 0) | |
12758 | { | |
12759 | mips_opts.nobopt = 1; | |
12760 | } | |
ad3fea08 TS |
12761 | else if (strcmp (name, "gp=default") == 0) |
12762 | mips_opts.gp32 = file_mips_gp32; | |
12763 | else if (strcmp (name, "gp=32") == 0) | |
12764 | mips_opts.gp32 = 1; | |
12765 | else if (strcmp (name, "gp=64") == 0) | |
12766 | { | |
12767 | if (!ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
12768 | as_warn ("%s isa does not support 64-bit registers", | |
12769 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12770 | mips_opts.gp32 = 0; | |
12771 | } | |
12772 | else if (strcmp (name, "fp=default") == 0) | |
12773 | mips_opts.fp32 = file_mips_fp32; | |
12774 | else if (strcmp (name, "fp=32") == 0) | |
12775 | mips_opts.fp32 = 1; | |
12776 | else if (strcmp (name, "fp=64") == 0) | |
12777 | { | |
12778 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
12779 | as_warn ("%s isa does not support 64-bit floating point registers", | |
12780 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12781 | mips_opts.fp32 = 0; | |
12782 | } | |
037b32b9 AN |
12783 | else if (strcmp (name, "softfloat") == 0) |
12784 | mips_opts.soft_float = 1; | |
12785 | else if (strcmp (name, "hardfloat") == 0) | |
12786 | mips_opts.soft_float = 0; | |
12787 | else if (strcmp (name, "singlefloat") == 0) | |
12788 | mips_opts.single_float = 1; | |
12789 | else if (strcmp (name, "doublefloat") == 0) | |
12790 | mips_opts.single_float = 0; | |
252b5132 RH |
12791 | else if (strcmp (name, "mips16") == 0 |
12792 | || strcmp (name, "MIPS-16") == 0) | |
12793 | mips_opts.mips16 = 1; | |
12794 | else if (strcmp (name, "nomips16") == 0 | |
12795 | || strcmp (name, "noMIPS-16") == 0) | |
12796 | mips_opts.mips16 = 0; | |
e16bfa71 TS |
12797 | else if (strcmp (name, "smartmips") == 0) |
12798 | { | |
ad3fea08 | 12799 | if (!ISA_SUPPORTS_SMARTMIPS) |
e16bfa71 TS |
12800 | as_warn ("%s ISA does not support SmartMIPS ASE", |
12801 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12802 | mips_opts.ase_smartmips = 1; | |
12803 | } | |
12804 | else if (strcmp (name, "nosmartmips") == 0) | |
12805 | mips_opts.ase_smartmips = 0; | |
1f25f5d3 CD |
12806 | else if (strcmp (name, "mips3d") == 0) |
12807 | mips_opts.ase_mips3d = 1; | |
12808 | else if (strcmp (name, "nomips3d") == 0) | |
12809 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
12810 | else if (strcmp (name, "mdmx") == 0) |
12811 | mips_opts.ase_mdmx = 1; | |
12812 | else if (strcmp (name, "nomdmx") == 0) | |
12813 | mips_opts.ase_mdmx = 0; | |
74cd071d | 12814 | else if (strcmp (name, "dsp") == 0) |
ad3fea08 TS |
12815 | { |
12816 | if (!ISA_SUPPORTS_DSP_ASE) | |
12817 | as_warn ("%s ISA does not support DSP ASE", | |
12818 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12819 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 12820 | mips_opts.ase_dspr2 = 0; |
ad3fea08 | 12821 | } |
74cd071d | 12822 | else if (strcmp (name, "nodsp") == 0) |
8b082fb1 TS |
12823 | { |
12824 | mips_opts.ase_dsp = 0; | |
12825 | mips_opts.ase_dspr2 = 0; | |
12826 | } | |
12827 | else if (strcmp (name, "dspr2") == 0) | |
12828 | { | |
12829 | if (!ISA_SUPPORTS_DSPR2_ASE) | |
12830 | as_warn ("%s ISA does not support DSP R2 ASE", | |
12831 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12832 | mips_opts.ase_dspr2 = 1; | |
12833 | mips_opts.ase_dsp = 1; | |
12834 | } | |
12835 | else if (strcmp (name, "nodspr2") == 0) | |
12836 | { | |
12837 | mips_opts.ase_dspr2 = 0; | |
12838 | mips_opts.ase_dsp = 0; | |
12839 | } | |
ef2e4d86 | 12840 | else if (strcmp (name, "mt") == 0) |
ad3fea08 TS |
12841 | { |
12842 | if (!ISA_SUPPORTS_MT_ASE) | |
12843 | as_warn ("%s ISA does not support MT ASE", | |
12844 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12845 | mips_opts.ase_mt = 1; | |
12846 | } | |
ef2e4d86 CF |
12847 | else if (strcmp (name, "nomt") == 0) |
12848 | mips_opts.ase_mt = 0; | |
1a2c1fad | 12849 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 12850 | { |
af7ee8bf | 12851 | int reset = 0; |
252b5132 | 12852 | |
1a2c1fad CD |
12853 | /* Permit the user to change the ISA and architecture on the fly. |
12854 | Needless to say, misuse can cause serious problems. */ | |
81a21e38 | 12855 | if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) |
af7ee8bf CD |
12856 | { |
12857 | reset = 1; | |
12858 | mips_opts.isa = file_mips_isa; | |
1a2c1fad | 12859 | mips_opts.arch = file_mips_arch; |
1a2c1fad CD |
12860 | } |
12861 | else if (strncmp (name, "arch=", 5) == 0) | |
12862 | { | |
12863 | const struct mips_cpu_info *p; | |
12864 | ||
12865 | p = mips_parse_cpu("internal use", name + 5); | |
12866 | if (!p) | |
12867 | as_bad (_("unknown architecture %s"), name + 5); | |
12868 | else | |
12869 | { | |
12870 | mips_opts.arch = p->cpu; | |
12871 | mips_opts.isa = p->isa; | |
12872 | } | |
12873 | } | |
81a21e38 TS |
12874 | else if (strncmp (name, "mips", 4) == 0) |
12875 | { | |
12876 | const struct mips_cpu_info *p; | |
12877 | ||
12878 | p = mips_parse_cpu("internal use", name); | |
12879 | if (!p) | |
12880 | as_bad (_("unknown ISA level %s"), name + 4); | |
12881 | else | |
12882 | { | |
12883 | mips_opts.arch = p->cpu; | |
12884 | mips_opts.isa = p->isa; | |
12885 | } | |
12886 | } | |
af7ee8bf | 12887 | else |
81a21e38 | 12888 | as_bad (_("unknown ISA or architecture %s"), name); |
af7ee8bf CD |
12889 | |
12890 | switch (mips_opts.isa) | |
98d3f06f KH |
12891 | { |
12892 | case 0: | |
98d3f06f | 12893 | break; |
af7ee8bf CD |
12894 | case ISA_MIPS1: |
12895 | case ISA_MIPS2: | |
12896 | case ISA_MIPS32: | |
12897 | case ISA_MIPS32R2: | |
98d3f06f KH |
12898 | mips_opts.gp32 = 1; |
12899 | mips_opts.fp32 = 1; | |
12900 | break; | |
af7ee8bf CD |
12901 | case ISA_MIPS3: |
12902 | case ISA_MIPS4: | |
12903 | case ISA_MIPS5: | |
12904 | case ISA_MIPS64: | |
5f74bc13 | 12905 | case ISA_MIPS64R2: |
98d3f06f KH |
12906 | mips_opts.gp32 = 0; |
12907 | mips_opts.fp32 = 0; | |
12908 | break; | |
12909 | default: | |
12910 | as_bad (_("unknown ISA level %s"), name + 4); | |
12911 | break; | |
12912 | } | |
af7ee8bf | 12913 | if (reset) |
98d3f06f | 12914 | { |
af7ee8bf CD |
12915 | mips_opts.gp32 = file_mips_gp32; |
12916 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 12917 | } |
252b5132 RH |
12918 | } |
12919 | else if (strcmp (name, "autoextend") == 0) | |
12920 | mips_opts.noautoextend = 0; | |
12921 | else if (strcmp (name, "noautoextend") == 0) | |
12922 | mips_opts.noautoextend = 1; | |
12923 | else if (strcmp (name, "push") == 0) | |
12924 | { | |
12925 | struct mips_option_stack *s; | |
12926 | ||
12927 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
12928 | s->next = mips_opts_stack; | |
12929 | s->options = mips_opts; | |
12930 | mips_opts_stack = s; | |
12931 | } | |
12932 | else if (strcmp (name, "pop") == 0) | |
12933 | { | |
12934 | struct mips_option_stack *s; | |
12935 | ||
12936 | s = mips_opts_stack; | |
12937 | if (s == NULL) | |
12938 | as_bad (_(".set pop with no .set push")); | |
12939 | else | |
12940 | { | |
12941 | /* If we're changing the reorder mode we need to handle | |
12942 | delay slots correctly. */ | |
12943 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 12944 | start_noreorder (); |
252b5132 | 12945 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 12946 | end_noreorder (); |
252b5132 RH |
12947 | |
12948 | mips_opts = s->options; | |
12949 | mips_opts_stack = s->next; | |
12950 | free (s); | |
12951 | } | |
12952 | } | |
aed1a261 RS |
12953 | else if (strcmp (name, "sym32") == 0) |
12954 | mips_opts.sym32 = TRUE; | |
12955 | else if (strcmp (name, "nosym32") == 0) | |
12956 | mips_opts.sym32 = FALSE; | |
e6559e01 JM |
12957 | else if (strchr (name, ',')) |
12958 | { | |
12959 | /* Generic ".set" directive; use the generic handler. */ | |
12960 | *input_line_pointer = ch; | |
12961 | input_line_pointer = name; | |
12962 | s_set (0); | |
12963 | return; | |
12964 | } | |
252b5132 RH |
12965 | else |
12966 | { | |
12967 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
12968 | } | |
12969 | *input_line_pointer = ch; | |
12970 | demand_empty_rest_of_line (); | |
12971 | } | |
12972 | ||
12973 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
12974 | .option pic2. It means to generate SVR4 PIC calls. */ | |
12975 | ||
12976 | static void | |
17a2f251 | 12977 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
12978 | { |
12979 | mips_pic = SVR4_PIC; | |
143d77c5 | 12980 | mips_abicalls = TRUE; |
4d0d148d TS |
12981 | |
12982 | if (g_switch_seen && g_switch_value != 0) | |
12983 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
12984 | g_switch_value = 0; | |
12985 | ||
252b5132 RH |
12986 | bfd_set_gp_size (stdoutput, 0); |
12987 | demand_empty_rest_of_line (); | |
12988 | } | |
12989 | ||
12990 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
12991 | PIC code. It sets the $gp register for the function based on the | |
12992 | function address, which is in the register named in the argument. | |
12993 | This uses a relocation against _gp_disp, which is handled specially | |
12994 | by the linker. The result is: | |
12995 | lui $gp,%hi(_gp_disp) | |
12996 | addiu $gp,$gp,%lo(_gp_disp) | |
12997 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
12998 | The .cpload argument is normally $25 == $t9. |
12999 | ||
13000 | The -mno-shared option changes this to: | |
bbe506e8 TS |
13001 | lui $gp,%hi(__gnu_local_gp) |
13002 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
13003 | and the argument is ignored. This saves an instruction, but the |
13004 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
13005 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
13006 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
13007 | |
13008 | static void | |
17a2f251 | 13009 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
13010 | { |
13011 | expressionS ex; | |
aa6975fb ILT |
13012 | int reg; |
13013 | int in_shared; | |
252b5132 | 13014 | |
6478892d TS |
13015 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
13016 | .cpload is ignored. */ | |
13017 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
13018 | { |
13019 | s_ignore (0); | |
13020 | return; | |
13021 | } | |
13022 | ||
d3ecfc59 | 13023 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
13024 | if (mips_opts.noreorder == 0) |
13025 | as_warn (_(".cpload not in noreorder section")); | |
13026 | ||
aa6975fb ILT |
13027 | reg = tc_get_register (0); |
13028 | ||
13029 | /* If we need to produce a 64-bit address, we are better off using | |
13030 | the default instruction sequence. */ | |
aed1a261 | 13031 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 13032 | |
252b5132 | 13033 | ex.X_op = O_symbol; |
bbe506e8 TS |
13034 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
13035 | "__gnu_local_gp"); | |
252b5132 RH |
13036 | ex.X_op_symbol = NULL; |
13037 | ex.X_add_number = 0; | |
13038 | ||
13039 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 13040 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 13041 | |
584892a6 | 13042 | macro_start (); |
67c0d1eb RS |
13043 | macro_build_lui (&ex, mips_gp_register); |
13044 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 13045 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
13046 | if (in_shared) |
13047 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
13048 | mips_gp_register, reg); | |
584892a6 | 13049 | macro_end (); |
252b5132 RH |
13050 | |
13051 | demand_empty_rest_of_line (); | |
13052 | } | |
13053 | ||
6478892d TS |
13054 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
13055 | .cpsetup $reg1, offset|$reg2, label | |
13056 | ||
13057 | If offset is given, this results in: | |
13058 | sd $gp, offset($sp) | |
956cd1d6 | 13059 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
13060 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
13061 | daddu $gp, $gp, $reg1 | |
6478892d TS |
13062 | |
13063 | If $reg2 is given, this results in: | |
13064 | daddu $reg2, $gp, $0 | |
956cd1d6 | 13065 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
13066 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
13067 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
13068 | $reg1 is normally $25 == $t9. |
13069 | ||
13070 | The -mno-shared option replaces the last three instructions with | |
13071 | lui $gp,%hi(_gp) | |
54f4ddb3 | 13072 | addiu $gp,$gp,%lo(_gp) */ |
aa6975fb | 13073 | |
6478892d | 13074 | static void |
17a2f251 | 13075 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13076 | { |
13077 | expressionS ex_off; | |
13078 | expressionS ex_sym; | |
13079 | int reg1; | |
6478892d | 13080 | |
8586fc66 | 13081 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
13082 | We also need NewABI support. */ |
13083 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
13084 | { | |
13085 | s_ignore (0); | |
13086 | return; | |
13087 | } | |
13088 | ||
13089 | reg1 = tc_get_register (0); | |
13090 | SKIP_WHITESPACE (); | |
13091 | if (*input_line_pointer != ',') | |
13092 | { | |
13093 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
13094 | return; | |
13095 | } | |
13096 | else | |
80245285 | 13097 | ++input_line_pointer; |
6478892d TS |
13098 | SKIP_WHITESPACE (); |
13099 | if (*input_line_pointer == '$') | |
80245285 TS |
13100 | { |
13101 | mips_cpreturn_register = tc_get_register (0); | |
13102 | mips_cpreturn_offset = -1; | |
13103 | } | |
6478892d | 13104 | else |
80245285 TS |
13105 | { |
13106 | mips_cpreturn_offset = get_absolute_expression (); | |
13107 | mips_cpreturn_register = -1; | |
13108 | } | |
6478892d TS |
13109 | SKIP_WHITESPACE (); |
13110 | if (*input_line_pointer != ',') | |
13111 | { | |
13112 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
13113 | return; | |
13114 | } | |
13115 | else | |
f9419b05 | 13116 | ++input_line_pointer; |
6478892d | 13117 | SKIP_WHITESPACE (); |
f21f8242 | 13118 | expression (&ex_sym); |
6478892d | 13119 | |
584892a6 | 13120 | macro_start (); |
6478892d TS |
13121 | if (mips_cpreturn_register == -1) |
13122 | { | |
13123 | ex_off.X_op = O_constant; | |
13124 | ex_off.X_add_symbol = NULL; | |
13125 | ex_off.X_op_symbol = NULL; | |
13126 | ex_off.X_add_number = mips_cpreturn_offset; | |
13127 | ||
67c0d1eb | 13128 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 13129 | BFD_RELOC_LO16, SP); |
6478892d TS |
13130 | } |
13131 | else | |
67c0d1eb | 13132 | macro_build (NULL, "daddu", "d,v,t", mips_cpreturn_register, |
17a2f251 | 13133 | mips_gp_register, 0); |
6478892d | 13134 | |
aed1a261 | 13135 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb ILT |
13136 | { |
13137 | macro_build (&ex_sym, "lui", "t,u", mips_gp_register, | |
13138 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, | |
13139 | BFD_RELOC_HI16_S); | |
13140 | ||
13141 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
13142 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
13143 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
13144 | ||
13145 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
13146 | mips_gp_register, reg1); | |
13147 | } | |
13148 | else | |
13149 | { | |
13150 | expressionS ex; | |
13151 | ||
13152 | ex.X_op = O_symbol; | |
4184909a | 13153 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
13154 | ex.X_op_symbol = NULL; |
13155 | ex.X_add_number = 0; | |
6e1304d8 | 13156 | |
aa6975fb ILT |
13157 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
13158 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
13159 | ||
13160 | macro_build_lui (&ex, mips_gp_register); | |
13161 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
13162 | mips_gp_register, BFD_RELOC_LO16); | |
13163 | } | |
f21f8242 | 13164 | |
584892a6 | 13165 | macro_end (); |
6478892d TS |
13166 | |
13167 | demand_empty_rest_of_line (); | |
13168 | } | |
13169 | ||
13170 | static void | |
17a2f251 | 13171 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13172 | { |
13173 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
54f4ddb3 | 13174 | .cplocal is ignored. */ |
6478892d TS |
13175 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) |
13176 | { | |
13177 | s_ignore (0); | |
13178 | return; | |
13179 | } | |
13180 | ||
13181 | mips_gp_register = tc_get_register (0); | |
85b51719 | 13182 | demand_empty_rest_of_line (); |
6478892d TS |
13183 | } |
13184 | ||
252b5132 RH |
13185 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
13186 | offset from $sp. The offset is remembered, and after making a PIC | |
13187 | call $gp is restored from that location. */ | |
13188 | ||
13189 | static void | |
17a2f251 | 13190 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
13191 | { |
13192 | expressionS ex; | |
252b5132 | 13193 | |
6478892d | 13194 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 13195 | .cprestore is ignored. */ |
6478892d | 13196 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
13197 | { |
13198 | s_ignore (0); | |
13199 | return; | |
13200 | } | |
13201 | ||
13202 | mips_cprestore_offset = get_absolute_expression (); | |
7a621144 | 13203 | mips_cprestore_valid = 1; |
252b5132 RH |
13204 | |
13205 | ex.X_op = O_constant; | |
13206 | ex.X_add_symbol = NULL; | |
13207 | ex.X_op_symbol = NULL; | |
13208 | ex.X_add_number = mips_cprestore_offset; | |
13209 | ||
584892a6 | 13210 | macro_start (); |
67c0d1eb RS |
13211 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
13212 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 13213 | macro_end (); |
252b5132 RH |
13214 | |
13215 | demand_empty_rest_of_line (); | |
13216 | } | |
13217 | ||
6478892d | 13218 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 13219 | was given in the preceding .cpsetup, it results in: |
6478892d | 13220 | ld $gp, offset($sp) |
76b3015f | 13221 | |
6478892d | 13222 | If a register $reg2 was given there, it results in: |
54f4ddb3 TS |
13223 | daddu $gp, $reg2, $0 */ |
13224 | ||
6478892d | 13225 | static void |
17a2f251 | 13226 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13227 | { |
13228 | expressionS ex; | |
6478892d TS |
13229 | |
13230 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
13231 | We also need NewABI support. */ | |
13232 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
13233 | { | |
13234 | s_ignore (0); | |
13235 | return; | |
13236 | } | |
13237 | ||
584892a6 | 13238 | macro_start (); |
6478892d TS |
13239 | if (mips_cpreturn_register == -1) |
13240 | { | |
13241 | ex.X_op = O_constant; | |
13242 | ex.X_add_symbol = NULL; | |
13243 | ex.X_op_symbol = NULL; | |
13244 | ex.X_add_number = mips_cpreturn_offset; | |
13245 | ||
67c0d1eb | 13246 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
13247 | } |
13248 | else | |
67c0d1eb | 13249 | macro_build (NULL, "daddu", "d,v,t", mips_gp_register, |
17a2f251 | 13250 | mips_cpreturn_register, 0); |
584892a6 | 13251 | macro_end (); |
6478892d TS |
13252 | |
13253 | demand_empty_rest_of_line (); | |
13254 | } | |
13255 | ||
741d6ea8 JM |
13256 | /* Handle the .dtprelword and .dtpreldword pseudo-ops. They generate |
13257 | a 32-bit or 64-bit DTP-relative relocation (BYTES says which) for | |
13258 | use in DWARF debug information. */ | |
13259 | ||
13260 | static void | |
13261 | s_dtprel_internal (size_t bytes) | |
13262 | { | |
13263 | expressionS ex; | |
13264 | char *p; | |
13265 | ||
13266 | expression (&ex); | |
13267 | ||
13268 | if (ex.X_op != O_symbol) | |
13269 | { | |
13270 | as_bad (_("Unsupported use of %s"), (bytes == 8 | |
13271 | ? ".dtpreldword" | |
13272 | : ".dtprelword")); | |
13273 | ignore_rest_of_line (); | |
13274 | } | |
13275 | ||
13276 | p = frag_more (bytes); | |
13277 | md_number_to_chars (p, 0, bytes); | |
13278 | fix_new_exp (frag_now, p - frag_now->fr_literal, bytes, &ex, FALSE, | |
13279 | (bytes == 8 | |
13280 | ? BFD_RELOC_MIPS_TLS_DTPREL64 | |
13281 | : BFD_RELOC_MIPS_TLS_DTPREL32)); | |
13282 | ||
13283 | demand_empty_rest_of_line (); | |
13284 | } | |
13285 | ||
13286 | /* Handle .dtprelword. */ | |
13287 | ||
13288 | static void | |
13289 | s_dtprelword (int ignore ATTRIBUTE_UNUSED) | |
13290 | { | |
13291 | s_dtprel_internal (4); | |
13292 | } | |
13293 | ||
13294 | /* Handle .dtpreldword. */ | |
13295 | ||
13296 | static void | |
13297 | s_dtpreldword (int ignore ATTRIBUTE_UNUSED) | |
13298 | { | |
13299 | s_dtprel_internal (8); | |
13300 | } | |
13301 | ||
6478892d TS |
13302 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC |
13303 | code. It sets the offset to use in gp_rel relocations. */ | |
13304 | ||
13305 | static void | |
17a2f251 | 13306 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
13307 | { |
13308 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
13309 | We also need NewABI support. */ | |
13310 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
13311 | { | |
13312 | s_ignore (0); | |
13313 | return; | |
13314 | } | |
13315 | ||
def2e0dd | 13316 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
13317 | |
13318 | demand_empty_rest_of_line (); | |
13319 | } | |
13320 | ||
252b5132 RH |
13321 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
13322 | code. It generates a 32 bit GP relative reloc. */ | |
13323 | ||
13324 | static void | |
17a2f251 | 13325 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 13326 | { |
a8dbcb85 TS |
13327 | segment_info_type *si; |
13328 | struct insn_label_list *l; | |
252b5132 RH |
13329 | symbolS *label; |
13330 | expressionS ex; | |
13331 | char *p; | |
13332 | ||
13333 | /* When not generating PIC code, this is treated as .word. */ | |
13334 | if (mips_pic != SVR4_PIC) | |
13335 | { | |
13336 | s_cons (2); | |
13337 | return; | |
13338 | } | |
13339 | ||
a8dbcb85 TS |
13340 | si = seg_info (now_seg); |
13341 | l = si->label_list; | |
13342 | label = l != NULL ? l->label : NULL; | |
7d10b47d | 13343 | mips_emit_delays (); |
252b5132 RH |
13344 | if (auto_align) |
13345 | mips_align (2, 0, label); | |
13346 | mips_clear_insn_labels (); | |
13347 | ||
13348 | expression (&ex); | |
13349 | ||
13350 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
13351 | { | |
13352 | as_bad (_("Unsupported use of .gpword")); | |
13353 | ignore_rest_of_line (); | |
13354 | } | |
13355 | ||
13356 | p = frag_more (4); | |
17a2f251 | 13357 | md_number_to_chars (p, 0, 4); |
b34976b6 | 13358 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 13359 | BFD_RELOC_GPREL32); |
252b5132 RH |
13360 | |
13361 | demand_empty_rest_of_line (); | |
13362 | } | |
13363 | ||
10181a0d | 13364 | static void |
17a2f251 | 13365 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d | 13366 | { |
a8dbcb85 TS |
13367 | segment_info_type *si; |
13368 | struct insn_label_list *l; | |
10181a0d AO |
13369 | symbolS *label; |
13370 | expressionS ex; | |
13371 | char *p; | |
13372 | ||
13373 | /* When not generating PIC code, this is treated as .dword. */ | |
13374 | if (mips_pic != SVR4_PIC) | |
13375 | { | |
13376 | s_cons (3); | |
13377 | return; | |
13378 | } | |
13379 | ||
a8dbcb85 TS |
13380 | si = seg_info (now_seg); |
13381 | l = si->label_list; | |
13382 | label = l != NULL ? l->label : NULL; | |
7d10b47d | 13383 | mips_emit_delays (); |
10181a0d AO |
13384 | if (auto_align) |
13385 | mips_align (3, 0, label); | |
13386 | mips_clear_insn_labels (); | |
13387 | ||
13388 | expression (&ex); | |
13389 | ||
13390 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
13391 | { | |
13392 | as_bad (_("Unsupported use of .gpdword")); | |
13393 | ignore_rest_of_line (); | |
13394 | } | |
13395 | ||
13396 | p = frag_more (8); | |
17a2f251 | 13397 | md_number_to_chars (p, 0, 8); |
a105a300 | 13398 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 13399 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
13400 | |
13401 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
13402 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
13403 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
13404 | |
13405 | demand_empty_rest_of_line (); | |
13406 | } | |
13407 | ||
252b5132 RH |
13408 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
13409 | tables in SVR4 PIC code. */ | |
13410 | ||
13411 | static void | |
17a2f251 | 13412 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 13413 | { |
252b5132 RH |
13414 | int reg; |
13415 | ||
10181a0d AO |
13416 | /* This is ignored when not generating SVR4 PIC code. */ |
13417 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
13418 | { |
13419 | s_ignore (0); | |
13420 | return; | |
13421 | } | |
13422 | ||
13423 | /* Add $gp to the register named as an argument. */ | |
584892a6 | 13424 | macro_start (); |
252b5132 | 13425 | reg = tc_get_register (0); |
67c0d1eb | 13426 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 13427 | macro_end (); |
252b5132 | 13428 | |
bdaaa2e1 | 13429 | demand_empty_rest_of_line (); |
252b5132 RH |
13430 | } |
13431 | ||
13432 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
13433 | mips16 mode. This permits the linker to handle them specially, | |
13434 | such as generating jalx instructions when needed. We also make | |
13435 | them odd for the duration of the assembly, in order to generate the | |
13436 | right sort of code. We will make them even in the adjust_symtab | |
13437 | routine, while leaving them marked. This is convenient for the | |
13438 | debugger and the disassembler. The linker knows to make them odd | |
13439 | again. */ | |
13440 | ||
13441 | static void | |
17a2f251 | 13442 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 13443 | { |
f9419b05 | 13444 | mips16_mark_labels (); |
252b5132 RH |
13445 | |
13446 | demand_empty_rest_of_line (); | |
13447 | } | |
13448 | ||
13449 | /* Handle a .stabn directive. We need these in order to mark a label | |
13450 | as being a mips16 text label correctly. Sometimes the compiler | |
13451 | will emit a label, followed by a .stabn, and then switch sections. | |
13452 | If the label and .stabn are in mips16 mode, then the label is | |
13453 | really a mips16 text label. */ | |
13454 | ||
13455 | static void | |
17a2f251 | 13456 | s_mips_stab (int type) |
252b5132 | 13457 | { |
f9419b05 | 13458 | if (type == 'n') |
252b5132 RH |
13459 | mips16_mark_labels (); |
13460 | ||
13461 | s_stab (type); | |
13462 | } | |
13463 | ||
54f4ddb3 | 13464 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
252b5132 RH |
13465 | |
13466 | static void | |
17a2f251 | 13467 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
13468 | { |
13469 | char *name; | |
13470 | int c; | |
13471 | symbolS *symbolP; | |
13472 | expressionS exp; | |
13473 | ||
13474 | name = input_line_pointer; | |
13475 | c = get_symbol_end (); | |
13476 | symbolP = symbol_find_or_make (name); | |
13477 | S_SET_WEAK (symbolP); | |
13478 | *input_line_pointer = c; | |
13479 | ||
13480 | SKIP_WHITESPACE (); | |
13481 | ||
13482 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
13483 | { | |
13484 | if (S_IS_DEFINED (symbolP)) | |
13485 | { | |
956cd1d6 | 13486 | as_bad ("ignoring attempt to redefine symbol %s", |
252b5132 RH |
13487 | S_GET_NAME (symbolP)); |
13488 | ignore_rest_of_line (); | |
13489 | return; | |
13490 | } | |
bdaaa2e1 | 13491 | |
252b5132 RH |
13492 | if (*input_line_pointer == ',') |
13493 | { | |
13494 | ++input_line_pointer; | |
13495 | SKIP_WHITESPACE (); | |
13496 | } | |
bdaaa2e1 | 13497 | |
252b5132 RH |
13498 | expression (&exp); |
13499 | if (exp.X_op != O_symbol) | |
13500 | { | |
13501 | as_bad ("bad .weakext directive"); | |
98d3f06f | 13502 | ignore_rest_of_line (); |
252b5132 RH |
13503 | return; |
13504 | } | |
49309057 | 13505 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
13506 | } |
13507 | ||
13508 | demand_empty_rest_of_line (); | |
13509 | } | |
13510 | ||
13511 | /* Parse a register string into a number. Called from the ECOFF code | |
13512 | to parse .frame. The argument is non-zero if this is the frame | |
13513 | register, so that we can record it in mips_frame_reg. */ | |
13514 | ||
13515 | int | |
17a2f251 | 13516 | tc_get_register (int frame) |
252b5132 | 13517 | { |
707bfff6 | 13518 | unsigned int reg; |
252b5132 RH |
13519 | |
13520 | SKIP_WHITESPACE (); | |
707bfff6 TS |
13521 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
13522 | reg = 0; | |
252b5132 | 13523 | if (frame) |
7a621144 DJ |
13524 | { |
13525 | mips_frame_reg = reg != 0 ? reg : SP; | |
13526 | mips_frame_reg_valid = 1; | |
13527 | mips_cprestore_valid = 0; | |
13528 | } | |
252b5132 RH |
13529 | return reg; |
13530 | } | |
13531 | ||
13532 | valueT | |
17a2f251 | 13533 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
13534 | { |
13535 | int align = bfd_get_section_alignment (stdoutput, seg); | |
13536 | ||
b4c71f56 TS |
13537 | if (IS_ELF) |
13538 | { | |
13539 | /* We don't need to align ELF sections to the full alignment. | |
13540 | However, Irix 5 may prefer that we align them at least to a 16 | |
13541 | byte boundary. We don't bother to align the sections if we | |
13542 | are targeted for an embedded system. */ | |
c41e87e3 | 13543 | if (strncmp (TARGET_OS, "elf", 3) == 0) |
b4c71f56 TS |
13544 | return addr; |
13545 | if (align > 4) | |
13546 | align = 4; | |
13547 | } | |
252b5132 RH |
13548 | |
13549 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
13550 | } | |
13551 | ||
13552 | /* Utility routine, called from above as well. If called while the | |
13553 | input file is still being read, it's only an approximation. (For | |
13554 | example, a symbol may later become defined which appeared to be | |
13555 | undefined earlier.) */ | |
13556 | ||
13557 | static int | |
17a2f251 | 13558 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
13559 | { |
13560 | if (sym == 0) | |
13561 | return 0; | |
13562 | ||
4d0d148d | 13563 | if (g_switch_value > 0) |
252b5132 RH |
13564 | { |
13565 | const char *symname; | |
13566 | int change; | |
13567 | ||
c9914766 | 13568 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
13569 | register. It can be if it is smaller than the -G size or if |
13570 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 13571 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
13572 | they can. */ |
13573 | symname = S_GET_NAME (sym); | |
13574 | if (symname != (const char *) NULL | |
13575 | && (strcmp (symname, "eprol") == 0 | |
13576 | || strcmp (symname, "etext") == 0 | |
13577 | || strcmp (symname, "_gp") == 0 | |
13578 | || strcmp (symname, "edata") == 0 | |
13579 | || strcmp (symname, "_fbss") == 0 | |
13580 | || strcmp (symname, "_fdata") == 0 | |
13581 | || strcmp (symname, "_ftext") == 0 | |
13582 | || strcmp (symname, "end") == 0 | |
13583 | || strcmp (symname, "_gp_disp") == 0)) | |
13584 | change = 1; | |
13585 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
13586 | && (0 | |
13587 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
13588 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
13589 | && (symbol_get_obj (sym)->ecoff_extern_size | |
13590 | <= g_switch_value)) | |
252b5132 RH |
13591 | #endif |
13592 | /* We must defer this decision until after the whole | |
13593 | file has been read, since there might be a .extern | |
13594 | after the first use of this symbol. */ | |
13595 | || (before_relaxing | |
13596 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 13597 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
13598 | #endif |
13599 | && S_GET_VALUE (sym) == 0) | |
13600 | || (S_GET_VALUE (sym) != 0 | |
13601 | && S_GET_VALUE (sym) <= g_switch_value))) | |
13602 | change = 0; | |
13603 | else | |
13604 | { | |
13605 | const char *segname; | |
13606 | ||
13607 | segname = segment_name (S_GET_SEGMENT (sym)); | |
13608 | assert (strcmp (segname, ".lit8") != 0 | |
13609 | && strcmp (segname, ".lit4") != 0); | |
13610 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
13611 | && strcmp (segname, ".sbss") != 0 |
13612 | && strncmp (segname, ".sdata.", 7) != 0 | |
d4dc2f22 TS |
13613 | && strncmp (segname, ".sbss.", 6) != 0 |
13614 | && strncmp (segname, ".gnu.linkonce.sb.", 17) != 0 | |
fba2b7f9 | 13615 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); |
252b5132 RH |
13616 | } |
13617 | return change; | |
13618 | } | |
13619 | else | |
c9914766 | 13620 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
13621 | return 1; |
13622 | } | |
13623 | ||
5919d012 RS |
13624 | |
13625 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
13626 | ||
13627 | static bfd_boolean | |
17a2f251 | 13628 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
13629 | { |
13630 | asection *symsec; | |
5919d012 RS |
13631 | |
13632 | /* Handle the case of a symbol equated to another symbol. */ | |
13633 | while (symbol_equated_reloc_p (sym)) | |
13634 | { | |
13635 | symbolS *n; | |
13636 | ||
5f0fe04b | 13637 | /* It's possible to get a loop here in a badly written program. */ |
5919d012 RS |
13638 | n = symbol_get_value_expression (sym)->X_add_symbol; |
13639 | if (n == sym) | |
13640 | break; | |
13641 | sym = n; | |
13642 | } | |
13643 | ||
df1f3cda DD |
13644 | if (symbol_section_p (sym)) |
13645 | return TRUE; | |
13646 | ||
5919d012 RS |
13647 | symsec = S_GET_SEGMENT (sym); |
13648 | ||
5919d012 RS |
13649 | /* This must duplicate the test in adjust_reloc_syms. */ |
13650 | return (symsec != &bfd_und_section | |
13651 | && symsec != &bfd_abs_section | |
5f0fe04b TS |
13652 | && !bfd_is_com_section (symsec) |
13653 | && !s_is_linkonce (sym, segtype) | |
5919d012 RS |
13654 | #ifdef OBJ_ELF |
13655 | /* A global or weak symbol is treated as external. */ | |
f43abd2b | 13656 | && (!IS_ELF || (! S_IS_WEAK (sym) && ! S_IS_EXTERNAL (sym))) |
5919d012 RS |
13657 | #endif |
13658 | ); | |
13659 | } | |
13660 | ||
13661 | ||
252b5132 RH |
13662 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
13663 | extended opcode. SEC is the section the frag is in. */ | |
13664 | ||
13665 | static int | |
17a2f251 | 13666 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
13667 | { |
13668 | int type; | |
3994f87e | 13669 | const struct mips16_immed_operand *op; |
252b5132 RH |
13670 | offsetT val; |
13671 | int mintiny, maxtiny; | |
13672 | segT symsec; | |
98aa84af | 13673 | fragS *sym_frag; |
252b5132 RH |
13674 | |
13675 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
13676 | return 0; | |
13677 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
13678 | return 1; | |
13679 | ||
13680 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
13681 | op = mips16_immed_operands; | |
13682 | while (op->type != type) | |
13683 | { | |
13684 | ++op; | |
13685 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
13686 | } | |
13687 | ||
13688 | if (op->unsp) | |
13689 | { | |
13690 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
13691 | { | |
13692 | mintiny = 1; | |
13693 | maxtiny = 1 << op->nbits; | |
13694 | } | |
13695 | else | |
13696 | { | |
13697 | mintiny = 0; | |
13698 | maxtiny = (1 << op->nbits) - 1; | |
13699 | } | |
13700 | } | |
13701 | else | |
13702 | { | |
13703 | mintiny = - (1 << (op->nbits - 1)); | |
13704 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
13705 | } | |
13706 | ||
98aa84af | 13707 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 13708 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 13709 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
13710 | |
13711 | if (op->pcrel) | |
13712 | { | |
13713 | addressT addr; | |
13714 | ||
13715 | /* We won't have the section when we are called from | |
13716 | mips_relax_frag. However, we will always have been called | |
13717 | from md_estimate_size_before_relax first. If this is a | |
13718 | branch to a different section, we mark it as such. If SEC is | |
13719 | NULL, and the frag is not marked, then it must be a branch to | |
13720 | the same section. */ | |
13721 | if (sec == NULL) | |
13722 | { | |
13723 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
13724 | return 1; | |
13725 | } | |
13726 | else | |
13727 | { | |
98aa84af | 13728 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
13729 | if (symsec != sec) |
13730 | { | |
13731 | fragp->fr_subtype = | |
13732 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13733 | ||
13734 | /* FIXME: We should support this, and let the linker | |
13735 | catch branches and loads that are out of range. */ | |
13736 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
13737 | _("unsupported PC relative reference to different section")); | |
13738 | ||
13739 | return 1; | |
13740 | } | |
98aa84af AM |
13741 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
13742 | /* Assume non-extended on the first relaxation pass. | |
13743 | The address we have calculated will be bogus if this is | |
13744 | a forward branch to another frag, as the forward frag | |
13745 | will have fr_address == 0. */ | |
13746 | return 0; | |
252b5132 RH |
13747 | } |
13748 | ||
13749 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
13750 | the same section. If the relax_marker of the symbol fragment |
13751 | differs from the relax_marker of this fragment, we have not | |
13752 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
13753 | in STRETCH in order to get a better estimate of the address. |
13754 | This particularly matters because of the shift bits. */ | |
13755 | if (stretch != 0 | |
98aa84af | 13756 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
13757 | { |
13758 | fragS *f; | |
13759 | ||
13760 | /* Adjust stretch for any alignment frag. Note that if have | |
13761 | been expanding the earlier code, the symbol may be | |
13762 | defined in what appears to be an earlier frag. FIXME: | |
13763 | This doesn't handle the fr_subtype field, which specifies | |
13764 | a maximum number of bytes to skip when doing an | |
13765 | alignment. */ | |
98aa84af | 13766 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
13767 | { |
13768 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
13769 | { | |
13770 | if (stretch < 0) | |
13771 | stretch = - ((- stretch) | |
13772 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
13773 | else | |
13774 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
13775 | if (stretch == 0) | |
13776 | break; | |
13777 | } | |
13778 | } | |
13779 | if (f != NULL) | |
13780 | val += stretch; | |
13781 | } | |
13782 | ||
13783 | addr = fragp->fr_address + fragp->fr_fix; | |
13784 | ||
13785 | /* The base address rules are complicated. The base address of | |
13786 | a branch is the following instruction. The base address of a | |
13787 | PC relative load or add is the instruction itself, but if it | |
13788 | is in a delay slot (in which case it can not be extended) use | |
13789 | the address of the instruction whose delay slot it is in. */ | |
13790 | if (type == 'p' || type == 'q') | |
13791 | { | |
13792 | addr += 2; | |
13793 | ||
13794 | /* If we are currently assuming that this frag should be | |
13795 | extended, then, the current address is two bytes | |
bdaaa2e1 | 13796 | higher. */ |
252b5132 RH |
13797 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
13798 | addr += 2; | |
13799 | ||
13800 | /* Ignore the low bit in the target, since it will be set | |
13801 | for a text label. */ | |
13802 | if ((val & 1) != 0) | |
13803 | --val; | |
13804 | } | |
13805 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
13806 | addr -= 4; | |
13807 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
13808 | addr -= 2; | |
13809 | ||
13810 | val -= addr & ~ ((1 << op->shift) - 1); | |
13811 | ||
13812 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
13813 | if (type == 'p' || type == 'q') | |
13814 | val /= 2; | |
13815 | ||
13816 | /* If any of the shifted bits are set, we must use an extended | |
13817 | opcode. If the address depends on the size of this | |
13818 | instruction, this can lead to a loop, so we arrange to always | |
13819 | use an extended opcode. We only check this when we are in | |
13820 | the main relaxation loop, when SEC is NULL. */ | |
13821 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
13822 | { | |
13823 | fragp->fr_subtype = | |
13824 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13825 | return 1; | |
13826 | } | |
13827 | ||
13828 | /* If we are about to mark a frag as extended because the value | |
13829 | is precisely maxtiny + 1, then there is a chance of an | |
13830 | infinite loop as in the following code: | |
13831 | la $4,foo | |
13832 | .skip 1020 | |
13833 | .align 2 | |
13834 | foo: | |
13835 | In this case when the la is extended, foo is 0x3fc bytes | |
13836 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
13837 | the la must be extended. To avoid this loop, we mark the | |
13838 | frag as extended if it was small, and is about to become | |
13839 | extended with a value of maxtiny + 1. */ | |
13840 | if (val == ((maxtiny + 1) << op->shift) | |
13841 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
13842 | && sec == NULL) | |
13843 | { | |
13844 | fragp->fr_subtype = | |
13845 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13846 | return 1; | |
13847 | } | |
13848 | } | |
13849 | else if (symsec != absolute_section && sec != NULL) | |
13850 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
13851 | ||
13852 | if ((val & ((1 << op->shift) - 1)) != 0 | |
13853 | || val < (mintiny << op->shift) | |
13854 | || val > (maxtiny << op->shift)) | |
13855 | return 1; | |
13856 | else | |
13857 | return 0; | |
13858 | } | |
13859 | ||
4a6a3df4 AO |
13860 | /* Compute the length of a branch sequence, and adjust the |
13861 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
13862 | worst-case length is computed, with UPDATE being used to indicate | |
13863 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
13864 | branch is to be computed. */ | |
13865 | static int | |
17a2f251 | 13866 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 13867 | { |
b34976b6 | 13868 | bfd_boolean toofar; |
4a6a3df4 AO |
13869 | int length; |
13870 | ||
13871 | if (fragp | |
13872 | && S_IS_DEFINED (fragp->fr_symbol) | |
13873 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
13874 | { | |
13875 | addressT addr; | |
13876 | offsetT val; | |
13877 | ||
13878 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
13879 | ||
13880 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
13881 | ||
13882 | val -= addr; | |
13883 | ||
13884 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
13885 | } | |
13886 | else if (fragp) | |
13887 | /* If the symbol is not defined or it's in a different segment, | |
13888 | assume the user knows what's going on and emit a short | |
13889 | branch. */ | |
b34976b6 | 13890 | toofar = FALSE; |
4a6a3df4 | 13891 | else |
b34976b6 | 13892 | toofar = TRUE; |
4a6a3df4 AO |
13893 | |
13894 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
13895 | fragp->fr_subtype | |
af6ae2ad | 13896 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_UNCOND (fragp->fr_subtype), |
4a6a3df4 AO |
13897 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
13898 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
13899 | toofar); | |
13900 | ||
13901 | length = 4; | |
13902 | if (toofar) | |
13903 | { | |
13904 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
13905 | length += 8; | |
13906 | ||
13907 | if (mips_pic != NO_PIC) | |
13908 | { | |
13909 | /* Additional space for PIC loading of target address. */ | |
13910 | length += 8; | |
13911 | if (mips_opts.isa == ISA_MIPS1) | |
13912 | /* Additional space for $at-stabilizing nop. */ | |
13913 | length += 4; | |
13914 | } | |
13915 | ||
13916 | /* If branch is conditional. */ | |
13917 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
13918 | length += 8; | |
13919 | } | |
b34976b6 | 13920 | |
4a6a3df4 AO |
13921 | return length; |
13922 | } | |
13923 | ||
252b5132 RH |
13924 | /* Estimate the size of a frag before relaxing. Unless this is the |
13925 | mips16, we are not really relaxing here, and the final size is | |
13926 | encoded in the subtype information. For the mips16, we have to | |
13927 | decide whether we are using an extended opcode or not. */ | |
13928 | ||
252b5132 | 13929 | int |
17a2f251 | 13930 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 13931 | { |
5919d012 | 13932 | int change; |
252b5132 | 13933 | |
4a6a3df4 AO |
13934 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
13935 | { | |
13936 | ||
b34976b6 AM |
13937 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
13938 | ||
4a6a3df4 AO |
13939 | return fragp->fr_var; |
13940 | } | |
13941 | ||
252b5132 | 13942 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
13943 | /* We don't want to modify the EXTENDED bit here; it might get us |
13944 | into infinite loops. We change it only in mips_relax_frag(). */ | |
13945 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 RH |
13946 | |
13947 | if (mips_pic == NO_PIC) | |
5919d012 | 13948 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 13949 | else if (mips_pic == SVR4_PIC) |
5919d012 | 13950 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
13951 | else if (mips_pic == VXWORKS_PIC) |
13952 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
13953 | change = 0; | |
252b5132 RH |
13954 | else |
13955 | abort (); | |
13956 | ||
13957 | if (change) | |
13958 | { | |
4d7206a2 | 13959 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 13960 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 13961 | } |
4d7206a2 RS |
13962 | else |
13963 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
13964 | } |
13965 | ||
13966 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 13967 | should be converted into a reloc against a section. */ |
252b5132 RH |
13968 | |
13969 | int | |
17a2f251 | 13970 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 13971 | { |
252b5132 RH |
13972 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
13973 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
13974 | return 0; | |
a161fe53 | 13975 | |
252b5132 RH |
13976 | if (fixp->fx_addsy == NULL) |
13977 | return 1; | |
a161fe53 | 13978 | |
de7e6852 RS |
13979 | /* If symbol SYM is in a mergeable section, relocations of the form |
13980 | SYM + 0 can usually be made section-relative. The mergeable data | |
13981 | is then identified by the section offset rather than by the symbol. | |
13982 | ||
13983 | However, if we're generating REL LO16 relocations, the offset is split | |
13984 | between the LO16 and parterning high part relocation. The linker will | |
13985 | need to recalculate the complete offset in order to correctly identify | |
13986 | the merge data. | |
13987 | ||
13988 | The linker has traditionally not looked for the parterning high part | |
13989 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
13990 | placed anywhere. Rather than break backwards compatibility by changing | |
13991 | this, it seems better not to force the issue, and instead keep the | |
13992 | original symbol. This will work with either linker behavior. */ | |
738e5348 | 13993 | if ((lo16_reloc_p (fixp->fx_r_type) |
704803a9 | 13994 | || reloc_needs_lo_p (fixp->fx_r_type)) |
de7e6852 RS |
13995 | && HAVE_IN_PLACE_ADDENDS |
13996 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
13997 | return 0; | |
13998 | ||
252b5132 | 13999 | #ifdef OBJ_ELF |
b314ec0e RS |
14000 | /* R_MIPS16_26 relocations against non-MIPS16 functions might resolve |
14001 | to a floating-point stub. The same is true for non-R_MIPS16_26 | |
14002 | relocations against MIPS16 functions; in this case, the stub becomes | |
14003 | the function's canonical address. | |
14004 | ||
14005 | Floating-point stubs are stored in unique .mips16.call.* or | |
14006 | .mips16.fn.* sections. If a stub T for function F is in section S, | |
14007 | the first relocation in section S must be against F; this is how the | |
14008 | linker determines the target function. All relocations that might | |
14009 | resolve to T must also be against F. We therefore have the following | |
14010 | restrictions, which are given in an intentionally-redundant way: | |
14011 | ||
14012 | 1. We cannot reduce R_MIPS16_26 relocations against non-MIPS16 | |
14013 | symbols. | |
14014 | ||
14015 | 2. We cannot reduce a stub's relocations against non-MIPS16 symbols | |
14016 | if that stub might be used. | |
14017 | ||
14018 | 3. We cannot reduce non-R_MIPS16_26 relocations against MIPS16 | |
14019 | symbols. | |
14020 | ||
14021 | 4. We cannot reduce a stub's relocations against MIPS16 symbols if | |
14022 | that stub might be used. | |
14023 | ||
14024 | There is a further restriction: | |
14025 | ||
14026 | 5. We cannot reduce R_MIPS16_26 relocations against MIPS16 symbols | |
14027 | on targets with in-place addends; the relocation field cannot | |
14028 | encode the low bit. | |
14029 | ||
14030 | For simplicity, we deal with (3)-(5) by not reducing _any_ relocation | |
14031 | against a MIPS16 symbol. | |
14032 | ||
14033 | We deal with (1)-(2) by saying that, if there's a R_MIPS16_26 | |
14034 | relocation against some symbol R, no relocation against R may be | |
14035 | reduced. (Note that this deals with (2) as well as (1) because | |
14036 | relocations against global symbols will never be reduced on ELF | |
14037 | targets.) This approach is a little simpler than trying to detect | |
14038 | stub sections, and gives the "all or nothing" per-symbol consistency | |
14039 | that we have for MIPS16 symbols. */ | |
f43abd2b | 14040 | if (IS_ELF |
b314ec0e | 14041 | && fixp->fx_subsy == NULL |
30c09090 | 14042 | && (ELF_ST_IS_MIPS16 (S_GET_OTHER (fixp->fx_addsy)) |
b314ec0e | 14043 | || *symbol_get_tc (fixp->fx_addsy))) |
252b5132 RH |
14044 | return 0; |
14045 | #endif | |
a161fe53 | 14046 | |
252b5132 RH |
14047 | return 1; |
14048 | } | |
14049 | ||
14050 | /* Translate internal representation of relocation info to BFD target | |
14051 | format. */ | |
14052 | ||
14053 | arelent ** | |
17a2f251 | 14054 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
14055 | { |
14056 | static arelent *retval[4]; | |
14057 | arelent *reloc; | |
14058 | bfd_reloc_code_real_type code; | |
14059 | ||
4b0cff4e TS |
14060 | memset (retval, 0, sizeof(retval)); |
14061 | reloc = retval[0] = (arelent *) xcalloc (1, sizeof (arelent)); | |
49309057 ILT |
14062 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
14063 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
14064 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
14065 | ||
bad36eac DJ |
14066 | if (fixp->fx_pcrel) |
14067 | { | |
14068 | assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2); | |
14069 | ||
14070 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
14071 | Relocations want only the symbol offset. */ | |
14072 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
f43abd2b | 14073 | if (!IS_ELF) |
bad36eac DJ |
14074 | { |
14075 | /* A gruesome hack which is a result of the gruesome gas | |
14076 | reloc handling. What's worse, for COFF (as opposed to | |
14077 | ECOFF), we might need yet another copy of reloc->address. | |
14078 | See bfd_install_relocation. */ | |
14079 | reloc->addend += reloc->address; | |
14080 | } | |
14081 | } | |
14082 | else | |
14083 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 14084 | |
438c16b8 TS |
14085 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
14086 | entry to be used in the relocation's section offset. */ | |
14087 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
14088 | { |
14089 | reloc->address = reloc->addend; | |
14090 | reloc->addend = 0; | |
14091 | } | |
14092 | ||
252b5132 | 14093 | code = fixp->fx_r_type; |
252b5132 | 14094 | |
bad36eac | 14095 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
14096 | if (reloc->howto == NULL) |
14097 | { | |
14098 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
14099 | _("Can not represent %s relocation in this object file format"), | |
14100 | bfd_get_reloc_code_name (code)); | |
14101 | retval[0] = NULL; | |
14102 | } | |
14103 | ||
14104 | return retval; | |
14105 | } | |
14106 | ||
14107 | /* Relax a machine dependent frag. This returns the amount by which | |
14108 | the current size of the frag should change. */ | |
14109 | ||
14110 | int | |
17a2f251 | 14111 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 14112 | { |
4a6a3df4 AO |
14113 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
14114 | { | |
14115 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
14116 | |
14117 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
14118 | |
14119 | return fragp->fr_var - old_var; | |
14120 | } | |
14121 | ||
252b5132 RH |
14122 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
14123 | return 0; | |
14124 | ||
c4e7957c | 14125 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
14126 | { |
14127 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14128 | return 0; | |
14129 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
14130 | return 2; | |
14131 | } | |
14132 | else | |
14133 | { | |
14134 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14135 | return 0; | |
14136 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
14137 | return -2; | |
14138 | } | |
14139 | ||
14140 | return 0; | |
14141 | } | |
14142 | ||
14143 | /* Convert a machine dependent frag. */ | |
14144 | ||
14145 | void | |
17a2f251 | 14146 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 14147 | { |
4a6a3df4 AO |
14148 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
14149 | { | |
14150 | bfd_byte *buf; | |
14151 | unsigned long insn; | |
14152 | expressionS exp; | |
14153 | fixS *fixp; | |
b34976b6 | 14154 | |
4a6a3df4 AO |
14155 | buf = (bfd_byte *)fragp->fr_literal + fragp->fr_fix; |
14156 | ||
14157 | if (target_big_endian) | |
14158 | insn = bfd_getb32 (buf); | |
14159 | else | |
14160 | insn = bfd_getl32 (buf); | |
b34976b6 | 14161 | |
4a6a3df4 AO |
14162 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
14163 | { | |
14164 | /* We generate a fixup instead of applying it right now | |
14165 | because, if there are linker relaxations, we're going to | |
14166 | need the relocations. */ | |
14167 | exp.X_op = O_symbol; | |
14168 | exp.X_add_symbol = fragp->fr_symbol; | |
14169 | exp.X_add_number = fragp->fr_offset; | |
14170 | ||
14171 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14172 | 4, &exp, TRUE, BFD_RELOC_16_PCREL_S2); |
4a6a3df4 AO |
14173 | fixp->fx_file = fragp->fr_file; |
14174 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 14175 | |
2132e3a3 | 14176 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14177 | buf += 4; |
14178 | } | |
14179 | else | |
14180 | { | |
14181 | int i; | |
14182 | ||
14183 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
14184 | _("relaxed out-of-range branch into a jump")); | |
14185 | ||
14186 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
14187 | goto uncond; | |
14188 | ||
14189 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14190 | { | |
14191 | /* Reverse the branch. */ | |
14192 | switch ((insn >> 28) & 0xf) | |
14193 | { | |
14194 | case 4: | |
14195 | /* bc[0-3][tf]l? and bc1any[24][ft] instructions can | |
14196 | have the condition reversed by tweaking a single | |
14197 | bit, and their opcodes all have 0x4???????. */ | |
14198 | assert ((insn & 0xf1000000) == 0x41000000); | |
14199 | insn ^= 0x00010000; | |
14200 | break; | |
14201 | ||
14202 | case 0: | |
14203 | /* bltz 0x04000000 bgez 0x04010000 | |
54f4ddb3 | 14204 | bltzal 0x04100000 bgezal 0x04110000 */ |
4a6a3df4 AO |
14205 | assert ((insn & 0xfc0e0000) == 0x04000000); |
14206 | insn ^= 0x00010000; | |
14207 | break; | |
b34976b6 | 14208 | |
4a6a3df4 AO |
14209 | case 1: |
14210 | /* beq 0x10000000 bne 0x14000000 | |
54f4ddb3 | 14211 | blez 0x18000000 bgtz 0x1c000000 */ |
4a6a3df4 AO |
14212 | insn ^= 0x04000000; |
14213 | break; | |
14214 | ||
14215 | default: | |
14216 | abort (); | |
14217 | } | |
14218 | } | |
14219 | ||
14220 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
14221 | { | |
14222 | /* Clear the and-link bit. */ | |
14223 | assert ((insn & 0xfc1c0000) == 0x04100000); | |
14224 | ||
54f4ddb3 TS |
14225 | /* bltzal 0x04100000 bgezal 0x04110000 |
14226 | bltzall 0x04120000 bgezall 0x04130000 */ | |
4a6a3df4 AO |
14227 | insn &= ~0x00100000; |
14228 | } | |
14229 | ||
14230 | /* Branch over the branch (if the branch was likely) or the | |
14231 | full jump (not likely case). Compute the offset from the | |
14232 | current instruction to branch to. */ | |
14233 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14234 | i = 16; | |
14235 | else | |
14236 | { | |
14237 | /* How many bytes in instructions we've already emitted? */ | |
14238 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
14239 | /* How many bytes in instructions from here to the end? */ | |
14240 | i = fragp->fr_var - i; | |
14241 | } | |
14242 | /* Convert to instruction count. */ | |
14243 | i >>= 2; | |
14244 | /* Branch counts from the next instruction. */ | |
b34976b6 | 14245 | i--; |
4a6a3df4 AO |
14246 | insn |= i; |
14247 | /* Branch over the jump. */ | |
2132e3a3 | 14248 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14249 | buf += 4; |
14250 | ||
54f4ddb3 | 14251 | /* nop */ |
2132e3a3 | 14252 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
14253 | buf += 4; |
14254 | ||
14255 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14256 | { | |
14257 | /* beql $0, $0, 2f */ | |
14258 | insn = 0x50000000; | |
14259 | /* Compute the PC offset from the current instruction to | |
14260 | the end of the variable frag. */ | |
14261 | /* How many bytes in instructions we've already emitted? */ | |
14262 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
14263 | /* How many bytes in instructions from here to the end? */ | |
14264 | i = fragp->fr_var - i; | |
14265 | /* Convert to instruction count. */ | |
14266 | i >>= 2; | |
14267 | /* Don't decrement i, because we want to branch over the | |
14268 | delay slot. */ | |
14269 | ||
14270 | insn |= i; | |
2132e3a3 | 14271 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14272 | buf += 4; |
14273 | ||
2132e3a3 | 14274 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
14275 | buf += 4; |
14276 | } | |
14277 | ||
14278 | uncond: | |
14279 | if (mips_pic == NO_PIC) | |
14280 | { | |
14281 | /* j or jal. */ | |
14282 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
14283 | ? 0x0c000000 : 0x08000000); | |
14284 | exp.X_op = O_symbol; | |
14285 | exp.X_add_symbol = fragp->fr_symbol; | |
14286 | exp.X_add_number = fragp->fr_offset; | |
14287 | ||
14288 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14289 | 4, &exp, FALSE, BFD_RELOC_MIPS_JMP); |
4a6a3df4 AO |
14290 | fixp->fx_file = fragp->fr_file; |
14291 | fixp->fx_line = fragp->fr_line; | |
14292 | ||
2132e3a3 | 14293 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14294 | buf += 4; |
14295 | } | |
14296 | else | |
14297 | { | |
14298 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ | |
14299 | insn = HAVE_64BIT_ADDRESSES ? 0xdf810000 : 0x8f810000; | |
14300 | exp.X_op = O_symbol; | |
14301 | exp.X_add_symbol = fragp->fr_symbol; | |
14302 | exp.X_add_number = fragp->fr_offset; | |
14303 | ||
14304 | if (fragp->fr_offset) | |
14305 | { | |
14306 | exp.X_add_symbol = make_expr_symbol (&exp); | |
14307 | exp.X_add_number = 0; | |
14308 | } | |
14309 | ||
14310 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14311 | 4, &exp, FALSE, BFD_RELOC_MIPS_GOT16); |
4a6a3df4 AO |
14312 | fixp->fx_file = fragp->fr_file; |
14313 | fixp->fx_line = fragp->fr_line; | |
14314 | ||
2132e3a3 | 14315 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 | 14316 | buf += 4; |
b34976b6 | 14317 | |
4a6a3df4 AO |
14318 | if (mips_opts.isa == ISA_MIPS1) |
14319 | { | |
14320 | /* nop */ | |
2132e3a3 | 14321 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
14322 | buf += 4; |
14323 | } | |
14324 | ||
14325 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
14326 | insn = HAVE_64BIT_ADDRESSES ? 0x64210000 : 0x24210000; | |
14327 | ||
14328 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 14329 | 4, &exp, FALSE, BFD_RELOC_LO16); |
4a6a3df4 AO |
14330 | fixp->fx_file = fragp->fr_file; |
14331 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 14332 | |
2132e3a3 | 14333 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14334 | buf += 4; |
14335 | ||
14336 | /* j(al)r $at. */ | |
14337 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
14338 | insn = 0x0020f809; | |
14339 | else | |
14340 | insn = 0x00200008; | |
14341 | ||
2132e3a3 | 14342 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
14343 | buf += 4; |
14344 | } | |
14345 | } | |
14346 | ||
14347 | assert (buf == (bfd_byte *)fragp->fr_literal | |
14348 | + fragp->fr_fix + fragp->fr_var); | |
14349 | ||
14350 | fragp->fr_fix += fragp->fr_var; | |
14351 | ||
14352 | return; | |
14353 | } | |
14354 | ||
252b5132 RH |
14355 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
14356 | { | |
14357 | int type; | |
3994f87e | 14358 | const struct mips16_immed_operand *op; |
b34976b6 | 14359 | bfd_boolean small, ext; |
252b5132 RH |
14360 | offsetT val; |
14361 | bfd_byte *buf; | |
14362 | unsigned long insn; | |
b34976b6 | 14363 | bfd_boolean use_extend; |
252b5132 RH |
14364 | unsigned short extend; |
14365 | ||
14366 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
14367 | op = mips16_immed_operands; | |
14368 | while (op->type != type) | |
14369 | ++op; | |
14370 | ||
14371 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14372 | { | |
b34976b6 AM |
14373 | small = FALSE; |
14374 | ext = TRUE; | |
252b5132 RH |
14375 | } |
14376 | else | |
14377 | { | |
b34976b6 AM |
14378 | small = TRUE; |
14379 | ext = FALSE; | |
252b5132 RH |
14380 | } |
14381 | ||
6386f3a7 | 14382 | resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
14383 | val = S_GET_VALUE (fragp->fr_symbol); |
14384 | if (op->pcrel) | |
14385 | { | |
14386 | addressT addr; | |
14387 | ||
14388 | addr = fragp->fr_address + fragp->fr_fix; | |
14389 | ||
14390 | /* The rules for the base address of a PC relative reloc are | |
14391 | complicated; see mips16_extended_frag. */ | |
14392 | if (type == 'p' || type == 'q') | |
14393 | { | |
14394 | addr += 2; | |
14395 | if (ext) | |
14396 | addr += 2; | |
14397 | /* Ignore the low bit in the target, since it will be | |
14398 | set for a text label. */ | |
14399 | if ((val & 1) != 0) | |
14400 | --val; | |
14401 | } | |
14402 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
14403 | addr -= 4; | |
14404 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
14405 | addr -= 2; | |
14406 | ||
14407 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
14408 | val -= addr; | |
14409 | ||
14410 | /* Make sure the section winds up with the alignment we have | |
14411 | assumed. */ | |
14412 | if (op->shift > 0) | |
14413 | record_alignment (asec, op->shift); | |
14414 | } | |
14415 | ||
14416 | if (ext | |
14417 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
14418 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
14419 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
14420 | _("extended instruction in delay slot")); | |
14421 | ||
14422 | buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
14423 | ||
14424 | if (target_big_endian) | |
14425 | insn = bfd_getb16 (buf); | |
14426 | else | |
14427 | insn = bfd_getl16 (buf); | |
14428 | ||
14429 | mips16_immed (fragp->fr_file, fragp->fr_line, type, val, | |
14430 | RELAX_MIPS16_USER_EXT (fragp->fr_subtype), | |
14431 | small, ext, &insn, &use_extend, &extend); | |
14432 | ||
14433 | if (use_extend) | |
14434 | { | |
2132e3a3 | 14435 | md_number_to_chars ((char *) buf, 0xf000 | extend, 2); |
252b5132 RH |
14436 | fragp->fr_fix += 2; |
14437 | buf += 2; | |
14438 | } | |
14439 | ||
2132e3a3 | 14440 | md_number_to_chars ((char *) buf, insn, 2); |
252b5132 RH |
14441 | fragp->fr_fix += 2; |
14442 | buf += 2; | |
14443 | } | |
14444 | else | |
14445 | { | |
4d7206a2 RS |
14446 | int first, second; |
14447 | fixS *fixp; | |
252b5132 | 14448 | |
4d7206a2 RS |
14449 | first = RELAX_FIRST (fragp->fr_subtype); |
14450 | second = RELAX_SECOND (fragp->fr_subtype); | |
14451 | fixp = (fixS *) fragp->fr_opcode; | |
252b5132 | 14452 | |
584892a6 RS |
14453 | /* Possibly emit a warning if we've chosen the longer option. */ |
14454 | if (((fragp->fr_subtype & RELAX_USE_SECOND) != 0) | |
14455 | == ((fragp->fr_subtype & RELAX_SECOND_LONGER) != 0)) | |
14456 | { | |
14457 | const char *msg = macro_warning (fragp->fr_subtype); | |
14458 | if (msg != 0) | |
14459 | as_warn_where (fragp->fr_file, fragp->fr_line, msg); | |
14460 | } | |
14461 | ||
4d7206a2 RS |
14462 | /* Go through all the fixups for the first sequence. Disable them |
14463 | (by marking them as done) if we're going to use the second | |
14464 | sequence instead. */ | |
14465 | while (fixp | |
14466 | && fixp->fx_frag == fragp | |
14467 | && fixp->fx_where < fragp->fr_fix - second) | |
14468 | { | |
14469 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
14470 | fixp->fx_done = 1; | |
14471 | fixp = fixp->fx_next; | |
14472 | } | |
252b5132 | 14473 | |
4d7206a2 RS |
14474 | /* Go through the fixups for the second sequence. Disable them if |
14475 | we're going to use the first sequence, otherwise adjust their | |
14476 | addresses to account for the relaxation. */ | |
14477 | while (fixp && fixp->fx_frag == fragp) | |
14478 | { | |
14479 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
14480 | fixp->fx_where -= first; | |
14481 | else | |
14482 | fixp->fx_done = 1; | |
14483 | fixp = fixp->fx_next; | |
14484 | } | |
14485 | ||
14486 | /* Now modify the frag contents. */ | |
14487 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
14488 | { | |
14489 | char *start; | |
14490 | ||
14491 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
14492 | memmove (start, start + first, second); | |
14493 | fragp->fr_fix -= first; | |
14494 | } | |
14495 | else | |
14496 | fragp->fr_fix -= second; | |
252b5132 RH |
14497 | } |
14498 | } | |
14499 | ||
14500 | #ifdef OBJ_ELF | |
14501 | ||
14502 | /* This function is called after the relocs have been generated. | |
14503 | We've been storing mips16 text labels as odd. Here we convert them | |
14504 | back to even for the convenience of the debugger. */ | |
14505 | ||
14506 | void | |
17a2f251 | 14507 | mips_frob_file_after_relocs (void) |
252b5132 RH |
14508 | { |
14509 | asymbol **syms; | |
14510 | unsigned int count, i; | |
14511 | ||
f43abd2b | 14512 | if (!IS_ELF) |
252b5132 RH |
14513 | return; |
14514 | ||
14515 | syms = bfd_get_outsymbols (stdoutput); | |
14516 | count = bfd_get_symcount (stdoutput); | |
14517 | for (i = 0; i < count; i++, syms++) | |
14518 | { | |
30c09090 | 14519 | if (ELF_ST_IS_MIPS16 (elf_symbol (*syms)->internal_elf_sym.st_other) |
252b5132 RH |
14520 | && ((*syms)->value & 1) != 0) |
14521 | { | |
14522 | (*syms)->value &= ~1; | |
14523 | /* If the symbol has an odd size, it was probably computed | |
14524 | incorrectly, so adjust that as well. */ | |
14525 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
14526 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
14527 | } | |
14528 | } | |
14529 | } | |
14530 | ||
14531 | #endif | |
14532 | ||
14533 | /* This function is called whenever a label is defined. It is used | |
14534 | when handling branch delays; if a branch has a label, we assume we | |
14535 | can not move it. */ | |
14536 | ||
14537 | void | |
17a2f251 | 14538 | mips_define_label (symbolS *sym) |
252b5132 | 14539 | { |
a8dbcb85 | 14540 | segment_info_type *si = seg_info (now_seg); |
252b5132 RH |
14541 | struct insn_label_list *l; |
14542 | ||
14543 | if (free_insn_labels == NULL) | |
14544 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
14545 | else | |
14546 | { | |
14547 | l = free_insn_labels; | |
14548 | free_insn_labels = l->next; | |
14549 | } | |
14550 | ||
14551 | l->label = sym; | |
a8dbcb85 TS |
14552 | l->next = si->label_list; |
14553 | si->label_list = l; | |
07a53e5c RH |
14554 | |
14555 | #ifdef OBJ_ELF | |
14556 | dwarf2_emit_label (sym); | |
14557 | #endif | |
252b5132 RH |
14558 | } |
14559 | \f | |
14560 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
14561 | ||
14562 | /* Some special processing for a MIPS ELF file. */ | |
14563 | ||
14564 | void | |
17a2f251 | 14565 | mips_elf_final_processing (void) |
252b5132 RH |
14566 | { |
14567 | /* Write out the register information. */ | |
316f5878 | 14568 | if (mips_abi != N64_ABI) |
252b5132 RH |
14569 | { |
14570 | Elf32_RegInfo s; | |
14571 | ||
14572 | s.ri_gprmask = mips_gprmask; | |
14573 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14574 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14575 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14576 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14577 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14578 | ||
14579 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
14580 | ((Elf32_External_RegInfo *) | |
14581 | mips_regmask_frag)); | |
14582 | } | |
14583 | else | |
14584 | { | |
14585 | Elf64_Internal_RegInfo s; | |
14586 | ||
14587 | s.ri_gprmask = mips_gprmask; | |
14588 | s.ri_pad = 0; | |
14589 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14590 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14591 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14592 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14593 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14594 | ||
14595 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
14596 | ((Elf64_External_RegInfo *) | |
14597 | mips_regmask_frag)); | |
14598 | } | |
14599 | ||
14600 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
14601 | sort of BFD interface for this. */ | |
14602 | if (mips_any_noreorder) | |
14603 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
14604 | if (mips_pic != NO_PIC) | |
143d77c5 | 14605 | { |
252b5132 | 14606 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
14607 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
14608 | } | |
14609 | if (mips_abicalls) | |
14610 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 14611 | |
98d3f06f | 14612 | /* Set MIPS ELF flags for ASEs. */ |
74cd071d CF |
14613 | /* We may need to define a new flag for DSP ASE, and set this flag when |
14614 | file_ase_dsp is true. */ | |
8b082fb1 | 14615 | /* Same for DSP R2. */ |
ef2e4d86 CF |
14616 | /* We may need to define a new flag for MT ASE, and set this flag when |
14617 | file_ase_mt is true. */ | |
a4672219 TS |
14618 | if (file_ase_mips16) |
14619 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
1f25f5d3 CD |
14620 | #if 0 /* XXX FIXME */ |
14621 | if (file_ase_mips3d) | |
14622 | elf_elfheader (stdoutput)->e_flags |= ???; | |
14623 | #endif | |
deec1734 CD |
14624 | if (file_ase_mdmx) |
14625 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 14626 | |
bdaaa2e1 | 14627 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 14628 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 14629 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 14630 | else if (mips_abi == O64_ABI) |
252b5132 | 14631 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 14632 | else if (mips_abi == EABI_ABI) |
252b5132 | 14633 | { |
316f5878 | 14634 | if (!file_mips_gp32) |
252b5132 RH |
14635 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
14636 | else | |
14637 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
14638 | } | |
316f5878 | 14639 | else if (mips_abi == N32_ABI) |
be00bddd TS |
14640 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
14641 | ||
c9914766 | 14642 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
14643 | |
14644 | if (mips_32bitmode) | |
14645 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 TS |
14646 | |
14647 | #if 0 /* XXX FIXME */ | |
14648 | /* 32 bit code with 64 bit FP registers. */ | |
14649 | if (!file_mips_fp32 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
14650 | elf_elfheader (stdoutput)->e_flags |= ???; | |
14651 | #endif | |
252b5132 RH |
14652 | } |
14653 | ||
14654 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
14655 | \f | |
beae10d5 | 14656 | typedef struct proc { |
9b2f1d35 EC |
14657 | symbolS *func_sym; |
14658 | symbolS *func_end_sym; | |
beae10d5 KH |
14659 | unsigned long reg_mask; |
14660 | unsigned long reg_offset; | |
14661 | unsigned long fpreg_mask; | |
14662 | unsigned long fpreg_offset; | |
14663 | unsigned long frame_offset; | |
14664 | unsigned long frame_reg; | |
14665 | unsigned long pc_reg; | |
14666 | } procS; | |
252b5132 RH |
14667 | |
14668 | static procS cur_proc; | |
14669 | static procS *cur_proc_ptr; | |
14670 | static int numprocs; | |
14671 | ||
742a56fe RS |
14672 | /* Implement NOP_OPCODE. We encode a MIPS16 nop as "1" and a normal |
14673 | nop as "0". */ | |
14674 | ||
14675 | char | |
14676 | mips_nop_opcode (void) | |
14677 | { | |
14678 | return seg_info (now_seg)->tc_segment_info_data.mips16; | |
14679 | } | |
14680 | ||
14681 | /* Fill in an rs_align_code fragment. This only needs to do something | |
14682 | for MIPS16 code, where 0 is not a nop. */ | |
a19d8eb0 | 14683 | |
0a9ef439 | 14684 | void |
17a2f251 | 14685 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 14686 | { |
742a56fe RS |
14687 | char *p; |
14688 | ||
0a9ef439 RH |
14689 | if (fragp->fr_type != rs_align_code) |
14690 | return; | |
14691 | ||
742a56fe RS |
14692 | p = fragp->fr_literal + fragp->fr_fix; |
14693 | if (*p) | |
a19d8eb0 | 14694 | { |
0a9ef439 | 14695 | int bytes; |
a19d8eb0 | 14696 | |
0a9ef439 | 14697 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
0a9ef439 RH |
14698 | if (bytes & 1) |
14699 | { | |
14700 | *p++ = 0; | |
f9419b05 | 14701 | fragp->fr_fix++; |
0a9ef439 | 14702 | } |
742a56fe | 14703 | md_number_to_chars (p, mips16_nop_insn.insn_opcode, 2); |
0a9ef439 | 14704 | fragp->fr_var = 2; |
a19d8eb0 | 14705 | } |
a19d8eb0 CP |
14706 | } |
14707 | ||
252b5132 | 14708 | static void |
17a2f251 | 14709 | md_obj_begin (void) |
252b5132 RH |
14710 | { |
14711 | } | |
14712 | ||
14713 | static void | |
17a2f251 | 14714 | md_obj_end (void) |
252b5132 | 14715 | { |
54f4ddb3 | 14716 | /* Check for premature end, nesting errors, etc. */ |
252b5132 | 14717 | if (cur_proc_ptr) |
9a41af64 | 14718 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
14719 | } |
14720 | ||
14721 | static long | |
17a2f251 | 14722 | get_number (void) |
252b5132 RH |
14723 | { |
14724 | int negative = 0; | |
14725 | long val = 0; | |
14726 | ||
14727 | if (*input_line_pointer == '-') | |
14728 | { | |
14729 | ++input_line_pointer; | |
14730 | negative = 1; | |
14731 | } | |
3882b010 | 14732 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 14733 | as_bad (_("expected simple number")); |
252b5132 RH |
14734 | if (input_line_pointer[0] == '0') |
14735 | { | |
14736 | if (input_line_pointer[1] == 'x') | |
14737 | { | |
14738 | input_line_pointer += 2; | |
3882b010 | 14739 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
14740 | { |
14741 | val <<= 4; | |
14742 | val |= hex_value (*input_line_pointer++); | |
14743 | } | |
14744 | return negative ? -val : val; | |
14745 | } | |
14746 | else | |
14747 | { | |
14748 | ++input_line_pointer; | |
3882b010 | 14749 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14750 | { |
14751 | val <<= 3; | |
14752 | val |= *input_line_pointer++ - '0'; | |
14753 | } | |
14754 | return negative ? -val : val; | |
14755 | } | |
14756 | } | |
3882b010 | 14757 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14758 | { |
14759 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
14760 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 14761 | as_warn (_("invalid number")); |
252b5132 RH |
14762 | return -1; |
14763 | } | |
3882b010 | 14764 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14765 | { |
14766 | val *= 10; | |
14767 | val += *input_line_pointer++ - '0'; | |
14768 | } | |
14769 | return negative ? -val : val; | |
14770 | } | |
14771 | ||
14772 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
14773 | is an initial number which is the ECOFF file index. In the non-ECOFF |
14774 | case .file implies DWARF-2. */ | |
14775 | ||
14776 | static void | |
17a2f251 | 14777 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 14778 | { |
ecb4347a DJ |
14779 | static int first_file_directive = 0; |
14780 | ||
c5dd6aab DJ |
14781 | if (ECOFF_DEBUGGING) |
14782 | { | |
14783 | get_number (); | |
14784 | s_app_file (0); | |
14785 | } | |
14786 | else | |
ecb4347a DJ |
14787 | { |
14788 | char *filename; | |
14789 | ||
14790 | filename = dwarf2_directive_file (0); | |
14791 | ||
14792 | /* Versions of GCC up to 3.1 start files with a ".file" | |
14793 | directive even for stabs output. Make sure that this | |
14794 | ".file" is handled. Note that you need a version of GCC | |
14795 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
14796 | if (filename != NULL && ! first_file_directive) | |
14797 | { | |
14798 | (void) new_logical_line (filename, -1); | |
c04f5787 | 14799 | s_app_file_string (filename, 0); |
ecb4347a DJ |
14800 | } |
14801 | first_file_directive = 1; | |
14802 | } | |
c5dd6aab DJ |
14803 | } |
14804 | ||
14805 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
14806 | |
14807 | static void | |
17a2f251 | 14808 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 14809 | { |
c5dd6aab DJ |
14810 | if (!ECOFF_DEBUGGING) |
14811 | dwarf2_directive_loc (0); | |
252b5132 RH |
14812 | } |
14813 | ||
252b5132 RH |
14814 | /* The .end directive. */ |
14815 | ||
14816 | static void | |
17a2f251 | 14817 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
14818 | { |
14819 | symbolS *p; | |
252b5132 | 14820 | |
7a621144 DJ |
14821 | /* Following functions need their own .frame and .cprestore directives. */ |
14822 | mips_frame_reg_valid = 0; | |
14823 | mips_cprestore_valid = 0; | |
14824 | ||
252b5132 RH |
14825 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
14826 | { | |
14827 | p = get_symbol (); | |
14828 | demand_empty_rest_of_line (); | |
14829 | } | |
14830 | else | |
14831 | p = NULL; | |
14832 | ||
14949570 | 14833 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
14834 | as_warn (_(".end not in text section")); |
14835 | ||
14836 | if (!cur_proc_ptr) | |
14837 | { | |
14838 | as_warn (_(".end directive without a preceding .ent directive.")); | |
14839 | demand_empty_rest_of_line (); | |
14840 | return; | |
14841 | } | |
14842 | ||
14843 | if (p != NULL) | |
14844 | { | |
14845 | assert (S_GET_NAME (p)); | |
9b2f1d35 | 14846 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
252b5132 | 14847 | as_warn (_(".end symbol does not match .ent symbol.")); |
ecb4347a DJ |
14848 | |
14849 | if (debug_type == DEBUG_STABS) | |
14850 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
14851 | S_GET_NAME (p)); | |
252b5132 RH |
14852 | } |
14853 | else | |
14854 | as_warn (_(".end directive missing or unknown symbol")); | |
14855 | ||
2132e3a3 | 14856 | #ifdef OBJ_ELF |
9b2f1d35 EC |
14857 | /* Create an expression to calculate the size of the function. */ |
14858 | if (p && cur_proc_ptr) | |
14859 | { | |
14860 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
14861 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
14862 | ||
14863 | obj->size = exp; | |
14864 | exp->X_op = O_subtract; | |
14865 | exp->X_add_symbol = symbol_temp_new_now (); | |
14866 | exp->X_op_symbol = p; | |
14867 | exp->X_add_number = 0; | |
14868 | ||
14869 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
14870 | } | |
14871 | ||
ecb4347a | 14872 | /* Generate a .pdr section. */ |
f43abd2b | 14873 | if (IS_ELF && !ECOFF_DEBUGGING && mips_flag_pdr) |
ecb4347a DJ |
14874 | { |
14875 | segT saved_seg = now_seg; | |
14876 | subsegT saved_subseg = now_subseg; | |
14877 | valueT dot; | |
14878 | expressionS exp; | |
14879 | char *fragp; | |
252b5132 | 14880 | |
ecb4347a | 14881 | dot = frag_now_fix (); |
252b5132 RH |
14882 | |
14883 | #ifdef md_flush_pending_output | |
ecb4347a | 14884 | md_flush_pending_output (); |
252b5132 RH |
14885 | #endif |
14886 | ||
ecb4347a DJ |
14887 | assert (pdr_seg); |
14888 | subseg_set (pdr_seg, 0); | |
252b5132 | 14889 | |
ecb4347a DJ |
14890 | /* Write the symbol. */ |
14891 | exp.X_op = O_symbol; | |
14892 | exp.X_add_symbol = p; | |
14893 | exp.X_add_number = 0; | |
14894 | emit_expr (&exp, 4); | |
252b5132 | 14895 | |
ecb4347a | 14896 | fragp = frag_more (7 * 4); |
252b5132 | 14897 | |
17a2f251 TS |
14898 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
14899 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
14900 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
14901 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
14902 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
14903 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
14904 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 14905 | |
ecb4347a DJ |
14906 | subseg_set (saved_seg, saved_subseg); |
14907 | } | |
14908 | #endif /* OBJ_ELF */ | |
252b5132 RH |
14909 | |
14910 | cur_proc_ptr = NULL; | |
14911 | } | |
14912 | ||
14913 | /* The .aent and .ent directives. */ | |
14914 | ||
14915 | static void | |
17a2f251 | 14916 | s_mips_ent (int aent) |
252b5132 | 14917 | { |
252b5132 | 14918 | symbolS *symbolP; |
252b5132 RH |
14919 | |
14920 | symbolP = get_symbol (); | |
14921 | if (*input_line_pointer == ',') | |
f9419b05 | 14922 | ++input_line_pointer; |
252b5132 | 14923 | SKIP_WHITESPACE (); |
3882b010 | 14924 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 14925 | || *input_line_pointer == '-') |
874e8986 | 14926 | get_number (); |
252b5132 | 14927 | |
14949570 | 14928 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
14929 | as_warn (_(".ent or .aent not in text section.")); |
14930 | ||
14931 | if (!aent && cur_proc_ptr) | |
9a41af64 | 14932 | as_warn (_("missing .end")); |
252b5132 RH |
14933 | |
14934 | if (!aent) | |
14935 | { | |
7a621144 DJ |
14936 | /* This function needs its own .frame and .cprestore directives. */ |
14937 | mips_frame_reg_valid = 0; | |
14938 | mips_cprestore_valid = 0; | |
14939 | ||
252b5132 RH |
14940 | cur_proc_ptr = &cur_proc; |
14941 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
14942 | ||
9b2f1d35 | 14943 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 14944 | |
49309057 | 14945 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
252b5132 | 14946 | |
f9419b05 | 14947 | ++numprocs; |
ecb4347a DJ |
14948 | |
14949 | if (debug_type == DEBUG_STABS) | |
14950 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
14951 | S_GET_NAME (symbolP)); | |
252b5132 RH |
14952 | } |
14953 | ||
14954 | demand_empty_rest_of_line (); | |
14955 | } | |
14956 | ||
14957 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 14958 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 14959 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 14960 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
14961 | symbol table (in the mdebug section). */ |
14962 | ||
14963 | static void | |
17a2f251 | 14964 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 14965 | { |
ecb4347a | 14966 | #ifdef OBJ_ELF |
f43abd2b | 14967 | if (IS_ELF && !ECOFF_DEBUGGING) |
ecb4347a DJ |
14968 | { |
14969 | long val; | |
252b5132 | 14970 | |
ecb4347a DJ |
14971 | if (cur_proc_ptr == (procS *) NULL) |
14972 | { | |
14973 | as_warn (_(".frame outside of .ent")); | |
14974 | demand_empty_rest_of_line (); | |
14975 | return; | |
14976 | } | |
252b5132 | 14977 | |
ecb4347a DJ |
14978 | cur_proc_ptr->frame_reg = tc_get_register (1); |
14979 | ||
14980 | SKIP_WHITESPACE (); | |
14981 | if (*input_line_pointer++ != ',' | |
14982 | || get_absolute_expression_and_terminator (&val) != ',') | |
14983 | { | |
14984 | as_warn (_("Bad .frame directive")); | |
14985 | --input_line_pointer; | |
14986 | demand_empty_rest_of_line (); | |
14987 | return; | |
14988 | } | |
252b5132 | 14989 | |
ecb4347a DJ |
14990 | cur_proc_ptr->frame_offset = val; |
14991 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 14992 | |
252b5132 | 14993 | demand_empty_rest_of_line (); |
252b5132 | 14994 | } |
ecb4347a DJ |
14995 | else |
14996 | #endif /* OBJ_ELF */ | |
14997 | s_ignore (ignore); | |
252b5132 RH |
14998 | } |
14999 | ||
bdaaa2e1 KH |
15000 | /* The .fmask and .mask directives. If the mdebug section is present |
15001 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 15002 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 15003 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
15004 | make reference to the ecoff symbol table (in the mdebug section). */ |
15005 | ||
15006 | static void | |
17a2f251 | 15007 | s_mips_mask (int reg_type) |
252b5132 | 15008 | { |
ecb4347a | 15009 | #ifdef OBJ_ELF |
f43abd2b | 15010 | if (IS_ELF && !ECOFF_DEBUGGING) |
252b5132 | 15011 | { |
ecb4347a | 15012 | long mask, off; |
252b5132 | 15013 | |
ecb4347a DJ |
15014 | if (cur_proc_ptr == (procS *) NULL) |
15015 | { | |
15016 | as_warn (_(".mask/.fmask outside of .ent")); | |
15017 | demand_empty_rest_of_line (); | |
15018 | return; | |
15019 | } | |
252b5132 | 15020 | |
ecb4347a DJ |
15021 | if (get_absolute_expression_and_terminator (&mask) != ',') |
15022 | { | |
15023 | as_warn (_("Bad .mask/.fmask directive")); | |
15024 | --input_line_pointer; | |
15025 | demand_empty_rest_of_line (); | |
15026 | return; | |
15027 | } | |
252b5132 | 15028 | |
ecb4347a DJ |
15029 | off = get_absolute_expression (); |
15030 | ||
15031 | if (reg_type == 'F') | |
15032 | { | |
15033 | cur_proc_ptr->fpreg_mask = mask; | |
15034 | cur_proc_ptr->fpreg_offset = off; | |
15035 | } | |
15036 | else | |
15037 | { | |
15038 | cur_proc_ptr->reg_mask = mask; | |
15039 | cur_proc_ptr->reg_offset = off; | |
15040 | } | |
15041 | ||
15042 | demand_empty_rest_of_line (); | |
252b5132 RH |
15043 | } |
15044 | else | |
ecb4347a DJ |
15045 | #endif /* OBJ_ELF */ |
15046 | s_ignore (reg_type); | |
252b5132 RH |
15047 | } |
15048 | ||
316f5878 RS |
15049 | /* A table describing all the processors gas knows about. Names are |
15050 | matched in the order listed. | |
e7af610e | 15051 | |
316f5878 RS |
15052 | To ease comparison, please keep this table in the same order as |
15053 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
15054 | static const struct mips_cpu_info mips_cpu_info_table[] = |
15055 | { | |
316f5878 | 15056 | /* Entries for generic ISAs */ |
ad3fea08 TS |
15057 | { "mips1", MIPS_CPU_IS_ISA, ISA_MIPS1, CPU_R3000 }, |
15058 | { "mips2", MIPS_CPU_IS_ISA, ISA_MIPS2, CPU_R6000 }, | |
15059 | { "mips3", MIPS_CPU_IS_ISA, ISA_MIPS3, CPU_R4000 }, | |
15060 | { "mips4", MIPS_CPU_IS_ISA, ISA_MIPS4, CPU_R8000 }, | |
15061 | { "mips5", MIPS_CPU_IS_ISA, ISA_MIPS5, CPU_MIPS5 }, | |
15062 | { "mips32", MIPS_CPU_IS_ISA, ISA_MIPS32, CPU_MIPS32 }, | |
15063 | { "mips32r2", MIPS_CPU_IS_ISA, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15064 | { "mips64", MIPS_CPU_IS_ISA, ISA_MIPS64, CPU_MIPS64 }, | |
15065 | { "mips64r2", MIPS_CPU_IS_ISA, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
316f5878 RS |
15066 | |
15067 | /* MIPS I */ | |
ad3fea08 TS |
15068 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, |
15069 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
15070 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
15071 | |
15072 | /* MIPS II */ | |
ad3fea08 | 15073 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
15074 | |
15075 | /* MIPS III */ | |
ad3fea08 TS |
15076 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, |
15077 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
15078 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
15079 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
15080 | { "vr4120", 0, ISA_MIPS3, CPU_VR4120 }, | |
15081 | { "vr4130", 0, ISA_MIPS3, CPU_VR4120 }, | |
15082 | { "vr4181", 0, ISA_MIPS3, CPU_R4111 }, | |
15083 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, | |
15084 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
15085 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
15086 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
15087 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
b15591bb AN |
15088 | /* ST Microelectronics Loongson 2E and 2F cores */ |
15089 | { "loongson2e", 0, ISA_MIPS3, CPU_LOONGSON_2E }, | |
15090 | { "loongson2f", 0, ISA_MIPS3, CPU_LOONGSON_2F }, | |
316f5878 RS |
15091 | |
15092 | /* MIPS IV */ | |
ad3fea08 TS |
15093 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, |
15094 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
15095 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
3aa3176b TS |
15096 | { "r14000", 0, ISA_MIPS4, CPU_R14000 }, |
15097 | { "r16000", 0, ISA_MIPS4, CPU_R16000 }, | |
ad3fea08 TS |
15098 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, |
15099 | { "vr5400", 0, ISA_MIPS4, CPU_VR5400 }, | |
15100 | { "vr5500", 0, ISA_MIPS4, CPU_VR5500 }, | |
15101 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, | |
15102 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
15103 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
15104 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
15105 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
15106 | { "rm7000", 0, ISA_MIPS4, CPU_RM7000 }, | |
15107 | { "rm9000", 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
15108 | |
15109 | /* MIPS 32 */ | |
ad3fea08 TS |
15110 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32 }, |
15111 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
15112 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
15113 | { "4ksc", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
15114 | ||
15115 | /* MIPS 32 Release 2 */ | |
15116 | { "4kec", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15117 | { "4kem", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15118 | { "4kep", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15119 | { "4ksd", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15120 | { "m4k", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15121 | { "m4kp", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 15122 | { "24kc", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 15123 | { "24kf2_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 15124 | { "24kf", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
15125 | { "24kf1_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
15126 | /* Deprecated forms of the above. */ | |
15127 | { "24kfx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 15128 | { "24kx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 15129 | /* 24KE is a 24K with DSP ASE, other ASEs are optional. */ |
ad3fea08 | 15130 | { "24kec", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 15131 | { "24kef2_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 15132 | { "24kef", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
15133 | { "24kef1_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
15134 | /* Deprecated forms of the above. */ | |
15135 | { "24kefx", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
65263ce3 | 15136 | { "24kex", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 15137 | /* 34K is a 24K with DSP and MT ASE, other ASEs are optional. */ |
a360e743 TS |
15138 | { "34kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15139 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15140 | { "34kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15141 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
15142 | { "34kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15143 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15144 | { "34kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15145 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15146 | /* Deprecated forms of the above. */ | |
15147 | { "34kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
15148 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
15149 | { "34kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
15150 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
15151 | /* 74K with DSP and DSPR2 ASE, other ASEs are optional. */ |
15152 | { "74kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
15153 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15154 | { "74kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15155 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
15156 | { "74kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15157 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
15158 | { "74kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15159 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15160 | { "74kf3_2", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
15161 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
15162 | /* Deprecated forms of the above. */ | |
15163 | { "74kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
15164 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
15165 | { "74kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
15166 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
32b26a03 | 15167 | |
316f5878 | 15168 | /* MIPS 64 */ |
ad3fea08 TS |
15169 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, |
15170 | { "5kf", 0, ISA_MIPS64, CPU_MIPS64 }, | |
15171 | { "20kc", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
7764b395 | 15172 | { "25kf", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, |
ad3fea08 | 15173 | |
c7a23324 | 15174 | /* Broadcom SB-1 CPU core */ |
65263ce3 TS |
15175 | { "sb1", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, |
15176 | ISA_MIPS64, CPU_SB1 }, | |
1e85aad8 JW |
15177 | /* Broadcom SB-1A CPU core */ |
15178 | { "sb1a", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, | |
15179 | ISA_MIPS64, CPU_SB1 }, | |
e7af610e | 15180 | |
ed163775 MR |
15181 | /* MIPS 64 Release 2 */ |
15182 | ||
967344c6 AN |
15183 | /* Cavium Networks Octeon CPU core */ |
15184 | { "octeon", 0, ISA_MIPS64R2, CPU_OCTEON }, | |
15185 | ||
316f5878 RS |
15186 | /* End marker */ |
15187 | { NULL, 0, 0, 0 } | |
15188 | }; | |
e7af610e | 15189 | |
84ea6cf2 | 15190 | |
316f5878 RS |
15191 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
15192 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 15193 | |
316f5878 | 15194 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 15195 | |
b34976b6 | 15196 | static bfd_boolean |
17a2f251 | 15197 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
15198 | { |
15199 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
15200 | given++, canonical++; | |
15201 | ||
15202 | return ((*given == 0 && *canonical == 0) | |
15203 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
15204 | } | |
15205 | ||
15206 | ||
15207 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
15208 | CPU name. We've traditionally allowed a lot of variation here. | |
15209 | ||
15210 | Note: this function is shared between GCC and GAS. */ | |
15211 | ||
b34976b6 | 15212 | static bfd_boolean |
17a2f251 | 15213 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
15214 | { |
15215 | /* First see if the name matches exactly, or with a final "000" | |
15216 | turned into "k". */ | |
15217 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 15218 | return TRUE; |
316f5878 RS |
15219 | |
15220 | /* If not, try comparing based on numerical designation alone. | |
15221 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
15222 | if (TOLOWER (*given) == 'r') | |
15223 | given++; | |
15224 | if (!ISDIGIT (*given)) | |
b34976b6 | 15225 | return FALSE; |
316f5878 RS |
15226 | |
15227 | /* Skip over some well-known prefixes in the canonical name, | |
15228 | hoping to find a number there too. */ | |
15229 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
15230 | canonical += 2; | |
15231 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
15232 | canonical += 2; | |
15233 | else if (TOLOWER (canonical[0]) == 'r') | |
15234 | canonical += 1; | |
15235 | ||
15236 | return mips_strict_matching_cpu_name_p (canonical, given); | |
15237 | } | |
15238 | ||
15239 | ||
15240 | /* Parse an option that takes the name of a processor as its argument. | |
15241 | OPTION is the name of the option and CPU_STRING is the argument. | |
15242 | Return the corresponding processor enumeration if the CPU_STRING is | |
15243 | recognized, otherwise report an error and return null. | |
15244 | ||
15245 | A similar function exists in GCC. */ | |
e7af610e NC |
15246 | |
15247 | static const struct mips_cpu_info * | |
17a2f251 | 15248 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 15249 | { |
316f5878 | 15250 | const struct mips_cpu_info *p; |
e7af610e | 15251 | |
316f5878 RS |
15252 | /* 'from-abi' selects the most compatible architecture for the given |
15253 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
15254 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
15255 | version. Look first at the -mgp options, if given, otherwise base | |
15256 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 15257 | |
316f5878 RS |
15258 | Treat NO_ABI like the EABIs. One reason to do this is that the |
15259 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
15260 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
15261 | 'mips64', just as we did in the days before 'from-abi'. */ | |
15262 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
15263 | { | |
15264 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
15265 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
15266 | ||
15267 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
15268 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
15269 | ||
15270 | if (file_mips_gp32 >= 0) | |
15271 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
15272 | ||
15273 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
15274 | ? ISA_MIPS3 | |
15275 | : ISA_MIPS1); | |
15276 | } | |
15277 | ||
15278 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
15279 | if (strcasecmp (cpu_string, "default") == 0) | |
15280 | return 0; | |
15281 | ||
15282 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
15283 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
15284 | return p; | |
15285 | ||
15286 | as_bad ("Bad value (%s) for %s", cpu_string, option); | |
15287 | return 0; | |
e7af610e NC |
15288 | } |
15289 | ||
316f5878 RS |
15290 | /* Return the canonical processor information for ISA (a member of the |
15291 | ISA_MIPS* enumeration). */ | |
15292 | ||
e7af610e | 15293 | static const struct mips_cpu_info * |
17a2f251 | 15294 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
15295 | { |
15296 | int i; | |
15297 | ||
15298 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 15299 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 15300 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
15301 | return (&mips_cpu_info_table[i]); |
15302 | ||
e972090a | 15303 | return NULL; |
e7af610e | 15304 | } |
fef14a42 TS |
15305 | |
15306 | static const struct mips_cpu_info * | |
17a2f251 | 15307 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
15308 | { |
15309 | int i; | |
15310 | ||
15311 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
15312 | if (arch == mips_cpu_info_table[i].cpu) | |
15313 | return (&mips_cpu_info_table[i]); | |
15314 | ||
15315 | return NULL; | |
15316 | } | |
316f5878 RS |
15317 | \f |
15318 | static void | |
17a2f251 | 15319 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
15320 | { |
15321 | if (*first_p) | |
15322 | { | |
15323 | fprintf (stream, "%24s", ""); | |
15324 | *col_p = 24; | |
15325 | } | |
15326 | else | |
15327 | { | |
15328 | fprintf (stream, ", "); | |
15329 | *col_p += 2; | |
15330 | } | |
e7af610e | 15331 | |
316f5878 RS |
15332 | if (*col_p + strlen (string) > 72) |
15333 | { | |
15334 | fprintf (stream, "\n%24s", ""); | |
15335 | *col_p = 24; | |
15336 | } | |
15337 | ||
15338 | fprintf (stream, "%s", string); | |
15339 | *col_p += strlen (string); | |
15340 | ||
15341 | *first_p = 0; | |
15342 | } | |
15343 | ||
15344 | void | |
17a2f251 | 15345 | md_show_usage (FILE *stream) |
e7af610e | 15346 | { |
316f5878 RS |
15347 | int column, first; |
15348 | size_t i; | |
15349 | ||
15350 | fprintf (stream, _("\ | |
15351 | MIPS options:\n\ | |
316f5878 RS |
15352 | -EB generate big endian output\n\ |
15353 | -EL generate little endian output\n\ | |
15354 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
15355 | -G NUM allow referencing objects up to NUM bytes\n\ | |
15356 | implicitly with the gp register [default 8]\n")); | |
15357 | fprintf (stream, _("\ | |
15358 | -mips1 generate MIPS ISA I instructions\n\ | |
15359 | -mips2 generate MIPS ISA II instructions\n\ | |
15360 | -mips3 generate MIPS ISA III instructions\n\ | |
15361 | -mips4 generate MIPS ISA IV instructions\n\ | |
15362 | -mips5 generate MIPS ISA V instructions\n\ | |
15363 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 15364 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 | 15365 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 15366 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
316f5878 RS |
15367 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
15368 | ||
15369 | first = 1; | |
e7af610e NC |
15370 | |
15371 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
15372 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
15373 | show (stream, "from-abi", &column, &first); | |
15374 | fputc ('\n', stream); | |
e7af610e | 15375 | |
316f5878 RS |
15376 | fprintf (stream, _("\ |
15377 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
15378 | -no-mCPU don't generate code specific to CPU.\n\ | |
15379 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
15380 | ||
15381 | first = 1; | |
15382 | ||
15383 | show (stream, "3900", &column, &first); | |
15384 | show (stream, "4010", &column, &first); | |
15385 | show (stream, "4100", &column, &first); | |
15386 | show (stream, "4650", &column, &first); | |
15387 | fputc ('\n', stream); | |
15388 | ||
15389 | fprintf (stream, _("\ | |
15390 | -mips16 generate mips16 instructions\n\ | |
15391 | -no-mips16 do not generate mips16 instructions\n")); | |
15392 | fprintf (stream, _("\ | |
e16bfa71 TS |
15393 | -msmartmips generate smartmips instructions\n\ |
15394 | -mno-smartmips do not generate smartmips instructions\n")); | |
15395 | fprintf (stream, _("\ | |
74cd071d CF |
15396 | -mdsp generate DSP instructions\n\ |
15397 | -mno-dsp do not generate DSP instructions\n")); | |
15398 | fprintf (stream, _("\ | |
8b082fb1 TS |
15399 | -mdspr2 generate DSP R2 instructions\n\ |
15400 | -mno-dspr2 do not generate DSP R2 instructions\n")); | |
15401 | fprintf (stream, _("\ | |
ef2e4d86 CF |
15402 | -mmt generate MT instructions\n\ |
15403 | -mno-mt do not generate MT instructions\n")); | |
15404 | fprintf (stream, _("\ | |
d766e8ec | 15405 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 15406 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
316f5878 RS |
15407 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
15408 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 | 15409 | -msym32 assume all symbols have 32-bit values\n\ |
316f5878 RS |
15410 | -O0 remove unneeded NOPs, do not swap branches\n\ |
15411 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
15412 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ |
15413 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
037b32b9 AN |
15414 | fprintf (stream, _("\ |
15415 | -mhard-float allow floating-point instructions\n\ | |
15416 | -msoft-float do not allow floating-point instructions\n\ | |
15417 | -msingle-float only allow 32-bit floating-point operations\n\ | |
15418 | -mdouble-float allow 32-bit and 64-bit floating-point operations\n\ | |
15419 | --[no-]construct-floats [dis]allow floating point values to be constructed\n" | |
15420 | )); | |
316f5878 RS |
15421 | #ifdef OBJ_ELF |
15422 | fprintf (stream, _("\ | |
15423 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
861fb55a | 15424 | -call_nonpic generate non-PIC code that can operate with DSOs\n\ |
0c000745 | 15425 | -mvxworks-pic generate VxWorks position independent code\n\ |
861fb55a | 15426 | -non_shared do not generate code that can operate with DSOs\n\ |
316f5878 | 15427 | -xgot assume a 32 bit GOT\n\ |
dcd410fe | 15428 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 | 15429 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
d821e36b | 15430 | position dependent (non shared) code\n\ |
316f5878 RS |
15431 | -mabi=ABI create ABI conformant object file for:\n")); |
15432 | ||
15433 | first = 1; | |
15434 | ||
15435 | show (stream, "32", &column, &first); | |
15436 | show (stream, "o64", &column, &first); | |
15437 | show (stream, "n32", &column, &first); | |
15438 | show (stream, "64", &column, &first); | |
15439 | show (stream, "eabi", &column, &first); | |
15440 | ||
15441 | fputc ('\n', stream); | |
15442 | ||
15443 | fprintf (stream, _("\ | |
15444 | -32 create o32 ABI object file (default)\n\ | |
15445 | -n32 create n32 ABI object file\n\ | |
15446 | -64 create 64 ABI object file\n")); | |
15447 | #endif | |
e7af610e | 15448 | } |
14e777e0 KB |
15449 | |
15450 | enum dwarf2_format | |
413a266c | 15451 | mips_dwarf2_format (asection *sec ATTRIBUTE_UNUSED) |
14e777e0 | 15452 | { |
369943fe | 15453 | if (HAVE_64BIT_SYMBOLS) |
1de5b6a1 AO |
15454 | { |
15455 | #ifdef TE_IRIX | |
15456 | return dwarf2_format_64bit_irix; | |
15457 | #else | |
15458 | return dwarf2_format_64bit; | |
15459 | #endif | |
15460 | } | |
14e777e0 KB |
15461 | else |
15462 | return dwarf2_format_32bit; | |
15463 | } | |
73369e65 EC |
15464 | |
15465 | int | |
15466 | mips_dwarf2_addr_size (void) | |
15467 | { | |
369943fe | 15468 | if (HAVE_64BIT_SYMBOLS) |
73369e65 | 15469 | return 8; |
73369e65 EC |
15470 | else |
15471 | return 4; | |
15472 | } | |
5862107c EC |
15473 | |
15474 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
15475 | void | |
15476 | mips_cfi_frame_initial_instructions (void) | |
15477 | { | |
15478 | cfi_add_CFA_def_cfa_register (SP); | |
15479 | } | |
15480 | ||
707bfff6 TS |
15481 | int |
15482 | tc_mips_regname_to_dw2regnum (char *regname) | |
15483 | { | |
15484 | unsigned int regnum = -1; | |
15485 | unsigned int reg; | |
15486 | ||
15487 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
15488 | regnum = reg; | |
15489 | ||
15490 | return regnum; | |
15491 | } |