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, |
db9b2be4 | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
c67a084a | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | Contributed by the OSF and Ralph Campbell. |
6 | Written by Keith Knowles and Ralph Campbell, working independently. | |
7 | Modified for ECOFF and R4000 support by Ian Lance Taylor of Cygnus | |
8 | Support. | |
9 | ||
10 | This file is part of GAS. | |
11 | ||
12 | GAS is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 14 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
15 | any later version. |
16 | ||
17 | GAS is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
24 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
25 | 02110-1301, USA. */ | |
252b5132 RH |
26 | |
27 | #include "as.h" | |
28 | #include "config.h" | |
29 | #include "subsegs.h" | |
3882b010 | 30 | #include "safe-ctype.h" |
252b5132 | 31 | |
252b5132 RH |
32 | #include "opcode/mips.h" |
33 | #include "itbl-ops.h" | |
c5dd6aab | 34 | #include "dwarf2dbg.h" |
5862107c | 35 | #include "dw2gencfi.h" |
252b5132 RH |
36 | |
37 | #ifdef DEBUG | |
38 | #define DBG(x) printf x | |
39 | #else | |
40 | #define DBG(x) | |
41 | #endif | |
42 | ||
43 | #ifdef OBJ_MAYBE_ELF | |
44 | /* Clean up namespace so we can include obj-elf.h too. */ | |
17a2f251 TS |
45 | static int mips_output_flavor (void); |
46 | static int mips_output_flavor (void) { return OUTPUT_FLAVOR; } | |
252b5132 RH |
47 | #undef OBJ_PROCESS_STAB |
48 | #undef OUTPUT_FLAVOR | |
49 | #undef S_GET_ALIGN | |
50 | #undef S_GET_SIZE | |
51 | #undef S_SET_ALIGN | |
52 | #undef S_SET_SIZE | |
252b5132 RH |
53 | #undef obj_frob_file |
54 | #undef obj_frob_file_after_relocs | |
55 | #undef obj_frob_symbol | |
56 | #undef obj_pop_insert | |
57 | #undef obj_sec_sym_ok_for_reloc | |
58 | #undef OBJ_COPY_SYMBOL_ATTRIBUTES | |
59 | ||
60 | #include "obj-elf.h" | |
61 | /* Fix any of them that we actually care about. */ | |
62 | #undef OUTPUT_FLAVOR | |
63 | #define OUTPUT_FLAVOR mips_output_flavor() | |
64 | #endif | |
65 | ||
66 | #if defined (OBJ_ELF) | |
67 | #include "elf/mips.h" | |
68 | #endif | |
69 | ||
70 | #ifndef ECOFF_DEBUGGING | |
71 | #define NO_ECOFF_DEBUGGING | |
72 | #define ECOFF_DEBUGGING 0 | |
73 | #endif | |
74 | ||
ecb4347a DJ |
75 | int mips_flag_mdebug = -1; |
76 | ||
dcd410fe RO |
77 | /* Control generation of .pdr sections. Off by default on IRIX: the native |
78 | linker doesn't know about and discards them, but relocations against them | |
79 | remain, leading to rld crashes. */ | |
80 | #ifdef TE_IRIX | |
81 | int mips_flag_pdr = FALSE; | |
82 | #else | |
83 | int mips_flag_pdr = TRUE; | |
84 | #endif | |
85 | ||
252b5132 RH |
86 | #include "ecoff.h" |
87 | ||
88 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
89 | static char *mips_regmask_frag; | |
90 | #endif | |
91 | ||
85b51719 | 92 | #define ZERO 0 |
741fe287 | 93 | #define ATREG 1 |
df58fc94 RS |
94 | #define S0 16 |
95 | #define S7 23 | |
252b5132 RH |
96 | #define TREG 24 |
97 | #define PIC_CALL_REG 25 | |
98 | #define KT0 26 | |
99 | #define KT1 27 | |
100 | #define GP 28 | |
101 | #define SP 29 | |
102 | #define FP 30 | |
103 | #define RA 31 | |
104 | ||
105 | #define ILLEGAL_REG (32) | |
106 | ||
741fe287 MR |
107 | #define AT mips_opts.at |
108 | ||
252b5132 RH |
109 | /* Allow override of standard little-endian ECOFF format. */ |
110 | ||
111 | #ifndef ECOFF_LITTLE_FORMAT | |
112 | #define ECOFF_LITTLE_FORMAT "ecoff-littlemips" | |
113 | #endif | |
114 | ||
115 | extern int target_big_endian; | |
116 | ||
252b5132 | 117 | /* The name of the readonly data section. */ |
4d0d148d | 118 | #define RDATA_SECTION_NAME (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ |
252b5132 | 119 | ? ".rdata" \ |
056350c6 NC |
120 | : OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
121 | ? ".rdata" \ | |
252b5132 RH |
122 | : OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
123 | ? ".rodata" \ | |
124 | : (abort (), "")) | |
125 | ||
a4e06468 RS |
126 | /* Ways in which an instruction can be "appended" to the output. */ |
127 | enum append_method { | |
128 | /* Just add it normally. */ | |
129 | APPEND_ADD, | |
130 | ||
131 | /* Add it normally and then add a nop. */ | |
132 | APPEND_ADD_WITH_NOP, | |
133 | ||
134 | /* Turn an instruction with a delay slot into a "compact" version. */ | |
135 | APPEND_ADD_COMPACT, | |
136 | ||
137 | /* Insert the instruction before the last one. */ | |
138 | APPEND_SWAP | |
139 | }; | |
140 | ||
47e39b9d RS |
141 | /* Information about an instruction, including its format, operands |
142 | and fixups. */ | |
143 | struct mips_cl_insn | |
144 | { | |
145 | /* The opcode's entry in mips_opcodes or mips16_opcodes. */ | |
146 | const struct mips_opcode *insn_mo; | |
147 | ||
148 | /* True if this is a mips16 instruction and if we want the extended | |
149 | form of INSN_MO. */ | |
150 | bfd_boolean use_extend; | |
151 | ||
152 | /* The 16-bit extension instruction to use when USE_EXTEND is true. */ | |
153 | unsigned short extend; | |
154 | ||
155 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is | |
156 | a copy of INSN_MO->match with the operands filled in. */ | |
157 | unsigned long insn_opcode; | |
158 | ||
159 | /* The frag that contains the instruction. */ | |
160 | struct frag *frag; | |
161 | ||
162 | /* The offset into FRAG of the first instruction byte. */ | |
163 | long where; | |
164 | ||
165 | /* The relocs associated with the instruction, if any. */ | |
166 | fixS *fixp[3]; | |
167 | ||
a38419a5 RS |
168 | /* True if this entry cannot be moved from its current position. */ |
169 | unsigned int fixed_p : 1; | |
47e39b9d | 170 | |
708587a4 | 171 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
172 | unsigned int noreorder_p : 1; |
173 | ||
2fa15973 RS |
174 | /* True for mips16 instructions that jump to an absolute address. */ |
175 | unsigned int mips16_absolute_jump_p : 1; | |
15be625d CM |
176 | |
177 | /* True if this instruction is complete. */ | |
178 | unsigned int complete_p : 1; | |
47e39b9d RS |
179 | }; |
180 | ||
a325df1d TS |
181 | /* The ABI to use. */ |
182 | enum mips_abi_level | |
183 | { | |
184 | NO_ABI = 0, | |
185 | O32_ABI, | |
186 | O64_ABI, | |
187 | N32_ABI, | |
188 | N64_ABI, | |
189 | EABI_ABI | |
190 | }; | |
191 | ||
192 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 193 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 194 | |
143d77c5 EC |
195 | /* Whether or not we have code that can call pic code. */ |
196 | int mips_abicalls = FALSE; | |
197 | ||
aa6975fb ILT |
198 | /* Whether or not we have code which can be put into a shared |
199 | library. */ | |
200 | static bfd_boolean mips_in_shared = TRUE; | |
201 | ||
252b5132 RH |
202 | /* This is the set of options which may be modified by the .set |
203 | pseudo-op. We use a struct so that .set push and .set pop are more | |
204 | reliable. */ | |
205 | ||
e972090a NC |
206 | struct mips_set_options |
207 | { | |
252b5132 RH |
208 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
209 | if it has not been initialized. Changed by `.set mipsN', and the | |
210 | -mipsN command line option, and the default CPU. */ | |
211 | int isa; | |
1f25f5d3 CD |
212 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
213 | if they have not been initialized. Changed by `.set <asename>', by | |
214 | command line options, and based on the default architecture. */ | |
215 | int ase_mips3d; | |
deec1734 | 216 | int ase_mdmx; |
e16bfa71 | 217 | int ase_smartmips; |
74cd071d | 218 | int ase_dsp; |
8b082fb1 | 219 | int ase_dspr2; |
ef2e4d86 | 220 | int ase_mt; |
dec0624d | 221 | int ase_mcu; |
252b5132 RH |
222 | /* Whether we are assembling for the mips16 processor. 0 if we are |
223 | not, 1 if we are, and -1 if the value has not been initialized. | |
224 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
225 | -nomips16 command line options, and the default CPU. */ | |
226 | int mips16; | |
df58fc94 RS |
227 | /* Whether we are assembling for the mipsMIPS ASE. 0 if we are not, |
228 | 1 if we are, and -1 if the value has not been initialized. Changed | |
229 | by `.set micromips' and `.set nomicromips', and the -mmicromips | |
230 | and -mno-micromips command line options, and the default CPU. */ | |
231 | int micromips; | |
252b5132 RH |
232 | /* Non-zero if we should not reorder instructions. Changed by `.set |
233 | reorder' and `.set noreorder'. */ | |
234 | int noreorder; | |
741fe287 MR |
235 | /* Non-zero if we should not permit the register designated "assembler |
236 | temporary" to be used in instructions. The value is the register | |
237 | number, normally $at ($1). Changed by `.set at=REG', `.set noat' | |
238 | (same as `.set at=$0') and `.set at' (same as `.set at=$1'). */ | |
239 | unsigned int at; | |
252b5132 RH |
240 | /* Non-zero if we should warn when a macro instruction expands into |
241 | more than one machine instruction. Changed by `.set nomacro' and | |
242 | `.set macro'. */ | |
243 | int warn_about_macros; | |
244 | /* Non-zero if we should not move instructions. Changed by `.set | |
245 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
246 | int nomove; | |
247 | /* Non-zero if we should not optimize branches by moving the target | |
248 | of the branch into the delay slot. Actually, we don't perform | |
249 | this optimization anyhow. Changed by `.set bopt' and `.set | |
250 | nobopt'. */ | |
251 | int nobopt; | |
252 | /* Non-zero if we should not autoextend mips16 instructions. | |
253 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
254 | int noautoextend; | |
a325df1d TS |
255 | /* Restrict general purpose registers and floating point registers |
256 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
257 | is passed but can changed if the assembler code uses .set mipsN. */ | |
258 | int gp32; | |
259 | int fp32; | |
fef14a42 TS |
260 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
261 | command line option, and the default CPU. */ | |
262 | int arch; | |
aed1a261 RS |
263 | /* True if ".set sym32" is in effect. */ |
264 | bfd_boolean sym32; | |
037b32b9 AN |
265 | /* True if floating-point operations are not allowed. Changed by .set |
266 | softfloat or .set hardfloat, by command line options -msoft-float or | |
267 | -mhard-float. The default is false. */ | |
268 | bfd_boolean soft_float; | |
269 | ||
270 | /* True if only single-precision floating-point operations are allowed. | |
271 | Changed by .set singlefloat or .set doublefloat, command-line options | |
272 | -msingle-float or -mdouble-float. The default is false. */ | |
273 | bfd_boolean single_float; | |
252b5132 RH |
274 | }; |
275 | ||
037b32b9 AN |
276 | /* This is the struct we use to hold the current set of options. Note |
277 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to | |
278 | -1 to indicate that they have not been initialized. */ | |
279 | ||
a325df1d | 280 | /* True if -mgp32 was passed. */ |
a8e8e863 | 281 | static int file_mips_gp32 = -1; |
a325df1d TS |
282 | |
283 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 284 | static int file_mips_fp32 = -1; |
a325df1d | 285 | |
037b32b9 AN |
286 | /* 1 if -msoft-float, 0 if -mhard-float. The default is 0. */ |
287 | static int file_mips_soft_float = 0; | |
288 | ||
289 | /* 1 if -msingle-float, 0 if -mdouble-float. The default is 0. */ | |
290 | static int file_mips_single_float = 0; | |
252b5132 | 291 | |
e972090a NC |
292 | static struct mips_set_options mips_opts = |
293 | { | |
037b32b9 AN |
294 | /* isa */ ISA_UNKNOWN, /* ase_mips3d */ -1, /* ase_mdmx */ -1, |
295 | /* ase_smartmips */ 0, /* ase_dsp */ -1, /* ase_dspr2 */ -1, /* ase_mt */ -1, | |
dec0624d MR |
296 | /* ase_mcu */ -1, /* mips16 */ -1, /* micromips */ -1, /* noreorder */ 0, |
297 | /* at */ ATREG, /* warn_about_macros */ 0, /* nomove */ 0, /* nobopt */ 0, | |
037b32b9 AN |
298 | /* noautoextend */ 0, /* gp32 */ 0, /* fp32 */ 0, /* arch */ CPU_UNKNOWN, |
299 | /* sym32 */ FALSE, /* soft_float */ FALSE, /* single_float */ FALSE | |
e7af610e | 300 | }; |
252b5132 RH |
301 | |
302 | /* These variables are filled in with the masks of registers used. | |
303 | The object format code reads them and puts them in the appropriate | |
304 | place. */ | |
305 | unsigned long mips_gprmask; | |
306 | unsigned long mips_cprmask[4]; | |
307 | ||
308 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 309 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 310 | |
738f4d98 | 311 | /* True if any MIPS16 code was produced. */ |
a4672219 TS |
312 | static int file_ase_mips16; |
313 | ||
3994f87e TS |
314 | #define ISA_SUPPORTS_MIPS16E (mips_opts.isa == ISA_MIPS32 \ |
315 | || mips_opts.isa == ISA_MIPS32R2 \ | |
316 | || mips_opts.isa == ISA_MIPS64 \ | |
317 | || mips_opts.isa == ISA_MIPS64R2) | |
318 | ||
df58fc94 RS |
319 | /* True if any microMIPS code was produced. */ |
320 | static int file_ase_micromips; | |
321 | ||
b12dd2e4 CF |
322 | /* True if we want to create R_MIPS_JALR for jalr $25. */ |
323 | #ifdef TE_IRIX | |
1180b5a4 | 324 | #define MIPS_JALR_HINT_P(EXPR) HAVE_NEWABI |
b12dd2e4 | 325 | #else |
1180b5a4 RS |
326 | /* As a GNU extension, we use R_MIPS_JALR for o32 too. However, |
327 | because there's no place for any addend, the only acceptable | |
328 | expression is a bare symbol. */ | |
329 | #define MIPS_JALR_HINT_P(EXPR) \ | |
330 | (!HAVE_IN_PLACE_ADDENDS \ | |
331 | || ((EXPR)->X_op == O_symbol && (EXPR)->X_add_number == 0)) | |
b12dd2e4 CF |
332 | #endif |
333 | ||
1f25f5d3 CD |
334 | /* True if -mips3d was passed or implied by arguments passed on the |
335 | command line (e.g., by -march). */ | |
336 | static int file_ase_mips3d; | |
337 | ||
deec1734 CD |
338 | /* True if -mdmx was passed or implied by arguments passed on the |
339 | command line (e.g., by -march). */ | |
340 | static int file_ase_mdmx; | |
341 | ||
e16bfa71 TS |
342 | /* True if -msmartmips was passed or implied by arguments passed on the |
343 | command line (e.g., by -march). */ | |
344 | static int file_ase_smartmips; | |
345 | ||
ad3fea08 TS |
346 | #define ISA_SUPPORTS_SMARTMIPS (mips_opts.isa == ISA_MIPS32 \ |
347 | || mips_opts.isa == ISA_MIPS32R2) | |
e16bfa71 | 348 | |
74cd071d CF |
349 | /* True if -mdsp was passed or implied by arguments passed on the |
350 | command line (e.g., by -march). */ | |
351 | static int file_ase_dsp; | |
352 | ||
ad3fea08 TS |
353 | #define ISA_SUPPORTS_DSP_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
354 | || mips_opts.isa == ISA_MIPS64R2) | |
355 | ||
65263ce3 TS |
356 | #define ISA_SUPPORTS_DSP64_ASE (mips_opts.isa == ISA_MIPS64R2) |
357 | ||
8b082fb1 TS |
358 | /* True if -mdspr2 was passed or implied by arguments passed on the |
359 | command line (e.g., by -march). */ | |
360 | static int file_ase_dspr2; | |
361 | ||
362 | #define ISA_SUPPORTS_DSPR2_ASE (mips_opts.isa == ISA_MIPS32R2 \ | |
363 | || mips_opts.isa == ISA_MIPS64R2) | |
364 | ||
ef2e4d86 CF |
365 | /* True if -mmt was passed or implied by arguments passed on the |
366 | command line (e.g., by -march). */ | |
367 | static int file_ase_mt; | |
368 | ||
ad3fea08 TS |
369 | #define ISA_SUPPORTS_MT_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
370 | || mips_opts.isa == ISA_MIPS64R2) | |
371 | ||
dec0624d | 372 | #define ISA_SUPPORTS_MCU_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
9ddc84cc MR |
373 | || mips_opts.isa == ISA_MIPS64R2 \ |
374 | || mips_opts.micromips) | |
dec0624d | 375 | |
ec68c924 | 376 | /* The argument of the -march= flag. The architecture we are assembling. */ |
fef14a42 | 377 | static int file_mips_arch = CPU_UNKNOWN; |
316f5878 | 378 | static const char *mips_arch_string; |
ec68c924 EC |
379 | |
380 | /* The argument of the -mtune= flag. The architecture for which we | |
381 | are optimizing. */ | |
382 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 383 | static const char *mips_tune_string; |
ec68c924 | 384 | |
316f5878 | 385 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
386 | static int mips_32bitmode = 0; |
387 | ||
316f5878 RS |
388 | /* True if the given ABI requires 32-bit registers. */ |
389 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
390 | ||
391 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
392 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
393 | ((ABI) == N32_ABI \ | |
394 | || (ABI) == N64_ABI \ | |
316f5878 RS |
395 | || (ABI) == O64_ABI) |
396 | ||
ad3fea08 | 397 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
398 | #define ISA_HAS_64BIT_REGS(ISA) \ |
399 | ((ISA) == ISA_MIPS3 \ | |
400 | || (ISA) == ISA_MIPS4 \ | |
401 | || (ISA) == ISA_MIPS5 \ | |
402 | || (ISA) == ISA_MIPS64 \ | |
403 | || (ISA) == ISA_MIPS64R2) | |
9ce8a5dd | 404 | |
ad3fea08 TS |
405 | /* Return true if ISA supports 64 bit wide float registers. */ |
406 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
407 | ((ISA) == ISA_MIPS3 \ | |
408 | || (ISA) == ISA_MIPS4 \ | |
409 | || (ISA) == ISA_MIPS5 \ | |
410 | || (ISA) == ISA_MIPS32R2 \ | |
411 | || (ISA) == ISA_MIPS64 \ | |
412 | || (ISA) == ISA_MIPS64R2) | |
413 | ||
af7ee8bf CD |
414 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
415 | instructions. */ | |
707bfff6 | 416 | #define ISA_HAS_DROR(ISA) \ |
df58fc94 RS |
417 | ((ISA) == ISA_MIPS64R2 \ |
418 | || (mips_opts.micromips \ | |
419 | && ISA_HAS_64BIT_REGS (ISA)) \ | |
420 | ) | |
af7ee8bf CD |
421 | |
422 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
423 | instructions. */ | |
707bfff6 TS |
424 | #define ISA_HAS_ROR(ISA) \ |
425 | ((ISA) == ISA_MIPS32R2 \ | |
426 | || (ISA) == ISA_MIPS64R2 \ | |
df58fc94 RS |
427 | || mips_opts.ase_smartmips \ |
428 | || mips_opts.micromips \ | |
429 | ) | |
707bfff6 | 430 | |
7455baf8 TS |
431 | /* Return true if ISA supports single-precision floats in odd registers. */ |
432 | #define ISA_HAS_ODD_SINGLE_FPR(ISA) \ | |
433 | ((ISA) == ISA_MIPS32 \ | |
434 | || (ISA) == ISA_MIPS32R2 \ | |
435 | || (ISA) == ISA_MIPS64 \ | |
436 | || (ISA) == ISA_MIPS64R2) | |
af7ee8bf | 437 | |
ad3fea08 TS |
438 | /* Return true if ISA supports move to/from high part of a 64-bit |
439 | floating-point register. */ | |
440 | #define ISA_HAS_MXHC1(ISA) \ | |
441 | ((ISA) == ISA_MIPS32R2 \ | |
442 | || (ISA) == ISA_MIPS64R2) | |
443 | ||
e013f690 | 444 | #define HAVE_32BIT_GPRS \ |
ad3fea08 | 445 | (mips_opts.gp32 || !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 446 | |
e013f690 | 447 | #define HAVE_32BIT_FPRS \ |
ad3fea08 | 448 | (mips_opts.fp32 || !ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
ca4e0257 | 449 | |
ad3fea08 TS |
450 | #define HAVE_64BIT_GPRS (!HAVE_32BIT_GPRS) |
451 | #define HAVE_64BIT_FPRS (!HAVE_32BIT_FPRS) | |
ca4e0257 | 452 | |
316f5878 | 453 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 454 | |
316f5878 | 455 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 456 | |
3b91255e RS |
457 | /* True if relocations are stored in-place. */ |
458 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
459 | ||
aed1a261 RS |
460 | /* The ABI-derived address size. */ |
461 | #define HAVE_64BIT_ADDRESSES \ | |
462 | (HAVE_64BIT_GPRS && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) | |
463 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) | |
e013f690 | 464 | |
aed1a261 RS |
465 | /* The size of symbolic constants (i.e., expressions of the form |
466 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
467 | #define HAVE_32BIT_SYMBOLS \ | |
468 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
469 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 470 | |
b7c7d6c1 TS |
471 | /* Addresses are loaded in different ways, depending on the address size |
472 | in use. The n32 ABI Documentation also mandates the use of additions | |
473 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 474 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 475 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
476 | |
477 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 478 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
479 | |
480 | #define ADDRESS_LOAD_INSN \ | |
481 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
482 | ||
483 | #define ADDRESS_STORE_INSN \ | |
484 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
485 | ||
a4672219 | 486 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
487 | #define CPU_HAS_MIPS16(cpu) \ |
488 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
489 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 490 | |
2309ddf2 | 491 | /* Return true if the given CPU supports the microMIPS ASE. */ |
df58fc94 RS |
492 | #define CPU_HAS_MICROMIPS(cpu) 0 |
493 | ||
60b63b72 RS |
494 | /* True if CPU has a dror instruction. */ |
495 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
496 | ||
497 | /* True if CPU has a ror instruction. */ | |
498 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
499 | ||
dd6a37e7 | 500 | /* True if CPU is in the Octeon family */ |
432233b3 | 501 | #define CPU_IS_OCTEON(CPU) ((CPU) == CPU_OCTEON || (CPU) == CPU_OCTEONP || (CPU) == CPU_OCTEON2) |
dd6a37e7 | 502 | |
dd3cbb7e | 503 | /* True if CPU has seq/sne and seqi/snei instructions. */ |
dd6a37e7 | 504 | #define CPU_HAS_SEQ(CPU) (CPU_IS_OCTEON (CPU)) |
dd3cbb7e | 505 | |
b19e8a9b AN |
506 | /* True if CPU does not implement the all the coprocessor insns. For these |
507 | CPUs only those COP insns are accepted that are explicitly marked to be | |
508 | available on the CPU. ISA membership for COP insns is ignored. */ | |
dd6a37e7 | 509 | #define NO_ISA_COP(CPU) (CPU_IS_OCTEON (CPU)) |
b19e8a9b | 510 | |
c8978940 CD |
511 | /* True if mflo and mfhi can be immediately followed by instructions |
512 | which write to the HI and LO registers. | |
513 | ||
514 | According to MIPS specifications, MIPS ISAs I, II, and III need | |
515 | (at least) two instructions between the reads of HI/LO and | |
516 | instructions which write them, and later ISAs do not. Contradicting | |
517 | the MIPS specifications, some MIPS IV processor user manuals (e.g. | |
518 | the UM for the NEC Vr5000) document needing the instructions between | |
519 | HI/LO reads and writes, as well. Therefore, we declare only MIPS32, | |
520 | MIPS64 and later ISAs to have the interlocks, plus any specific | |
521 | earlier-ISA CPUs for which CPU documentation declares that the | |
522 | instructions are really interlocked. */ | |
523 | #define hilo_interlocks \ | |
524 | (mips_opts.isa == ISA_MIPS32 \ | |
525 | || mips_opts.isa == ISA_MIPS32R2 \ | |
526 | || mips_opts.isa == ISA_MIPS64 \ | |
527 | || mips_opts.isa == ISA_MIPS64R2 \ | |
528 | || mips_opts.arch == CPU_R4010 \ | |
529 | || mips_opts.arch == CPU_R10000 \ | |
530 | || mips_opts.arch == CPU_R12000 \ | |
3aa3176b TS |
531 | || mips_opts.arch == CPU_R14000 \ |
532 | || mips_opts.arch == CPU_R16000 \ | |
c8978940 | 533 | || mips_opts.arch == CPU_RM7000 \ |
c8978940 | 534 | || mips_opts.arch == CPU_VR5500 \ |
df58fc94 | 535 | || mips_opts.micromips \ |
c8978940 | 536 | ) |
252b5132 RH |
537 | |
538 | /* Whether the processor uses hardware interlocks to protect reads | |
81912461 ILT |
539 | from the GPRs after they are loaded from memory, and thus does not |
540 | require nops to be inserted. This applies to instructions marked | |
541 | INSN_LOAD_MEMORY_DELAY. These nops are only required at MIPS ISA | |
df58fc94 RS |
542 | level I and microMIPS mode instructions are always interlocked. */ |
543 | #define gpr_interlocks \ | |
544 | (mips_opts.isa != ISA_MIPS1 \ | |
545 | || mips_opts.arch == CPU_R3900 \ | |
546 | || mips_opts.micromips \ | |
547 | ) | |
252b5132 | 548 | |
81912461 ILT |
549 | /* Whether the processor uses hardware interlocks to avoid delays |
550 | required by coprocessor instructions, and thus does not require | |
551 | nops to be inserted. This applies to instructions marked | |
552 | INSN_LOAD_COPROC_DELAY, INSN_COPROC_MOVE_DELAY, and to delays | |
553 | between instructions marked INSN_WRITE_COND_CODE and ones marked | |
554 | INSN_READ_COND_CODE. These nops are only required at MIPS ISA | |
df58fc94 RS |
555 | levels I, II, and III and microMIPS mode instructions are always |
556 | interlocked. */ | |
bdaaa2e1 | 557 | /* Itbl support may require additional care here. */ |
81912461 ILT |
558 | #define cop_interlocks \ |
559 | ((mips_opts.isa != ISA_MIPS1 \ | |
560 | && mips_opts.isa != ISA_MIPS2 \ | |
561 | && mips_opts.isa != ISA_MIPS3) \ | |
562 | || mips_opts.arch == CPU_R4300 \ | |
df58fc94 | 563 | || mips_opts.micromips \ |
81912461 ILT |
564 | ) |
565 | ||
566 | /* Whether the processor uses hardware interlocks to protect reads | |
567 | from coprocessor registers after they are loaded from memory, and | |
568 | thus does not require nops to be inserted. This applies to | |
569 | instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only | |
df58fc94 RS |
570 | requires at MIPS ISA level I and microMIPS mode instructions are |
571 | always interlocked. */ | |
572 | #define cop_mem_interlocks \ | |
573 | (mips_opts.isa != ISA_MIPS1 \ | |
574 | || mips_opts.micromips \ | |
575 | ) | |
252b5132 | 576 | |
6b76fefe CM |
577 | /* Is this a mfhi or mflo instruction? */ |
578 | #define MF_HILO_INSN(PINFO) \ | |
b19e8a9b AN |
579 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) |
580 | ||
581 | /* Returns true for a (non floating-point) coprocessor instruction. Reading | |
582 | or writing the condition code is only possible on the coprocessors and | |
583 | these insns are not marked with INSN_COP. Thus for these insns use the | |
a242dc0d | 584 | condition-code flags. */ |
b19e8a9b AN |
585 | #define COP_INSN(PINFO) \ |
586 | (PINFO != INSN_MACRO \ | |
a242dc0d AN |
587 | && ((PINFO) & (FP_S | FP_D)) == 0 \ |
588 | && ((PINFO) & (INSN_COP | INSN_READ_COND_CODE | INSN_WRITE_COND_CODE))) | |
6b76fefe | 589 | |
df58fc94 RS |
590 | /* Whether code compression (either of the MIPS16 or the microMIPS ASEs) |
591 | has been selected. This implies, in particular, that addresses of text | |
592 | labels have their LSB set. */ | |
593 | #define HAVE_CODE_COMPRESSION \ | |
594 | ((mips_opts.mips16 | mips_opts.micromips) != 0) | |
595 | ||
252b5132 RH |
596 | /* MIPS PIC level. */ |
597 | ||
a161fe53 | 598 | enum mips_pic_level mips_pic; |
252b5132 | 599 | |
c9914766 | 600 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 601 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 602 | static int mips_big_got = 0; |
252b5132 RH |
603 | |
604 | /* 1 if trap instructions should used for overflow rather than break | |
605 | instructions. */ | |
c9914766 | 606 | static int mips_trap = 0; |
252b5132 | 607 | |
119d663a | 608 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 609 | by assembling two single width halves into two single width floating |
119d663a NC |
610 | point registers which just happen to alias the double width destination |
611 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 612 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
613 | automatically at assemble time. */ |
614 | static int mips_disable_float_construction; | |
615 | ||
252b5132 RH |
616 | /* Non-zero if any .set noreorder directives were used. */ |
617 | ||
618 | static int mips_any_noreorder; | |
619 | ||
6b76fefe CM |
620 | /* Non-zero if nops should be inserted when the register referenced in |
621 | an mfhi/mflo instruction is read in the next two instructions. */ | |
622 | static int mips_7000_hilo_fix; | |
623 | ||
02ffd3e4 | 624 | /* The size of objects in the small data section. */ |
156c2f8b | 625 | static unsigned int g_switch_value = 8; |
252b5132 RH |
626 | /* Whether the -G option was used. */ |
627 | static int g_switch_seen = 0; | |
628 | ||
629 | #define N_RMASK 0xc4 | |
630 | #define N_VFP 0xd4 | |
631 | ||
632 | /* If we can determine in advance that GP optimization won't be | |
633 | possible, we can skip the relaxation stuff that tries to produce | |
634 | GP-relative references. This makes delay slot optimization work | |
635 | better. | |
636 | ||
637 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
638 | gcc output. It needs to guess right for gcc, otherwise gcc |
639 | will put what it thinks is a GP-relative instruction in a branch | |
640 | delay slot. | |
252b5132 RH |
641 | |
642 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
643 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 644 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
645 | |
646 | /* handle of the OPCODE hash table */ | |
647 | static struct hash_control *op_hash = NULL; | |
648 | ||
649 | /* The opcode hash table we use for the mips16. */ | |
650 | static struct hash_control *mips16_op_hash = NULL; | |
651 | ||
df58fc94 RS |
652 | /* The opcode hash table we use for the microMIPS ASE. */ |
653 | static struct hash_control *micromips_op_hash = NULL; | |
654 | ||
252b5132 RH |
655 | /* This array holds the chars that always start a comment. If the |
656 | pre-processor is disabled, these aren't very useful */ | |
657 | const char comment_chars[] = "#"; | |
658 | ||
659 | /* This array holds the chars that only start a comment at the beginning of | |
660 | a line. If the line seems to have the form '# 123 filename' | |
661 | .line and .file directives will appear in the pre-processed output */ | |
662 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
663 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 664 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
665 | /* Also note that C style comments are always supported. */ |
666 | const char line_comment_chars[] = "#"; | |
667 | ||
bdaaa2e1 | 668 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 669 | const char line_separator_chars[] = ";"; |
252b5132 RH |
670 | |
671 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
672 | const char EXP_CHARS[] = "eE"; | |
673 | ||
674 | /* Chars that mean this number is a floating point constant */ | |
675 | /* As in 0f12.456 */ | |
676 | /* or 0d1.2345e12 */ | |
677 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
678 | ||
679 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
680 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
681 | but nothing is ideal around here. | |
682 | */ | |
683 | ||
684 | static char *insn_error; | |
685 | ||
686 | static int auto_align = 1; | |
687 | ||
688 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
689 | offset in the stack frame from which to restore the $gp register. | |
690 | This is set by the .cprestore pseudo-op, and saved in this | |
691 | variable. */ | |
692 | static offsetT mips_cprestore_offset = -1; | |
693 | ||
67c1ffbe | 694 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 695 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 696 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
697 | static offsetT mips_cpreturn_offset = -1; |
698 | static int mips_cpreturn_register = -1; | |
699 | static int mips_gp_register = GP; | |
def2e0dd | 700 | static int mips_gprel_offset = 0; |
6478892d | 701 | |
7a621144 DJ |
702 | /* Whether mips_cprestore_offset has been set in the current function |
703 | (or whether it has already been warned about, if not). */ | |
704 | static int mips_cprestore_valid = 0; | |
705 | ||
252b5132 RH |
706 | /* This is the register which holds the stack frame, as set by the |
707 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
708 | static int mips_frame_reg = SP; | |
709 | ||
7a621144 DJ |
710 | /* Whether mips_frame_reg has been set in the current function |
711 | (or whether it has already been warned about, if not). */ | |
712 | static int mips_frame_reg_valid = 0; | |
713 | ||
252b5132 RH |
714 | /* To output NOP instructions correctly, we need to keep information |
715 | about the previous two instructions. */ | |
716 | ||
717 | /* Whether we are optimizing. The default value of 2 means to remove | |
718 | unneeded NOPs and swap branch instructions when possible. A value | |
719 | of 1 means to not swap branches. A value of 0 means to always | |
720 | insert NOPs. */ | |
721 | static int mips_optimize = 2; | |
722 | ||
723 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
724 | equivalent to seeing no -g option at all. */ | |
725 | static int mips_debug = 0; | |
726 | ||
7d8e00cf RS |
727 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
728 | #define MAX_VR4130_NOPS 4 | |
729 | ||
730 | /* The maximum number of NOPs needed to fill delay slots. */ | |
731 | #define MAX_DELAY_NOPS 2 | |
732 | ||
733 | /* The maximum number of NOPs needed for any purpose. */ | |
734 | #define MAX_NOPS 4 | |
71400594 RS |
735 | |
736 | /* A list of previous instructions, with index 0 being the most recent. | |
737 | We need to look back MAX_NOPS instructions when filling delay slots | |
738 | or working around processor errata. We need to look back one | |
739 | instruction further if we're thinking about using history[0] to | |
740 | fill a branch delay slot. */ | |
741 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 742 | |
1e915849 | 743 | /* Nop instructions used by emit_nop. */ |
df58fc94 RS |
744 | static struct mips_cl_insn nop_insn; |
745 | static struct mips_cl_insn mips16_nop_insn; | |
746 | static struct mips_cl_insn micromips_nop16_insn; | |
747 | static struct mips_cl_insn micromips_nop32_insn; | |
1e915849 RS |
748 | |
749 | /* The appropriate nop for the current mode. */ | |
df58fc94 RS |
750 | #define NOP_INSN (mips_opts.mips16 ? &mips16_nop_insn \ |
751 | : (mips_opts.micromips ? µmips_nop16_insn : &nop_insn)) | |
752 | ||
753 | /* The size of NOP_INSN in bytes. */ | |
754 | #define NOP_INSN_SIZE (HAVE_CODE_COMPRESSION ? 2 : 4) | |
252b5132 | 755 | |
252b5132 RH |
756 | /* If this is set, it points to a frag holding nop instructions which |
757 | were inserted before the start of a noreorder section. If those | |
758 | nops turn out to be unnecessary, the size of the frag can be | |
759 | decreased. */ | |
760 | static fragS *prev_nop_frag; | |
761 | ||
762 | /* The number of nop instructions we created in prev_nop_frag. */ | |
763 | static int prev_nop_frag_holds; | |
764 | ||
765 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 766 | prev_nop_frag. */ |
252b5132 RH |
767 | static int prev_nop_frag_required; |
768 | ||
769 | /* The number of instructions we've seen since prev_nop_frag. */ | |
770 | static int prev_nop_frag_since; | |
771 | ||
772 | /* For ECOFF and ELF, relocations against symbols are done in two | |
773 | parts, with a HI relocation and a LO relocation. Each relocation | |
774 | has only 16 bits of space to store an addend. This means that in | |
775 | order for the linker to handle carries correctly, it must be able | |
776 | to locate both the HI and the LO relocation. This means that the | |
777 | relocations must appear in order in the relocation table. | |
778 | ||
779 | In order to implement this, we keep track of each unmatched HI | |
780 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 781 | corresponding LO relocation. */ |
252b5132 | 782 | |
e972090a NC |
783 | struct mips_hi_fixup |
784 | { | |
252b5132 RH |
785 | /* Next HI fixup. */ |
786 | struct mips_hi_fixup *next; | |
787 | /* This fixup. */ | |
788 | fixS *fixp; | |
789 | /* The section this fixup is in. */ | |
790 | segT seg; | |
791 | }; | |
792 | ||
793 | /* The list of unmatched HI relocs. */ | |
794 | ||
795 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
796 | ||
64bdfcaf RS |
797 | /* The frag containing the last explicit relocation operator. |
798 | Null if explicit relocations have not been used. */ | |
799 | ||
800 | static fragS *prev_reloc_op_frag; | |
801 | ||
252b5132 RH |
802 | /* Map normal MIPS register numbers to mips16 register numbers. */ |
803 | ||
804 | #define X ILLEGAL_REG | |
e972090a NC |
805 | static const int mips32_to_16_reg_map[] = |
806 | { | |
252b5132 RH |
807 | X, X, 2, 3, 4, 5, 6, 7, |
808 | X, X, X, X, X, X, X, X, | |
809 | 0, 1, X, X, X, X, X, X, | |
810 | X, X, X, X, X, X, X, X | |
811 | }; | |
812 | #undef X | |
813 | ||
814 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
815 | ||
e972090a NC |
816 | static const unsigned int mips16_to_32_reg_map[] = |
817 | { | |
252b5132 RH |
818 | 16, 17, 2, 3, 4, 5, 6, 7 |
819 | }; | |
60b63b72 | 820 | |
df58fc94 RS |
821 | /* Map normal MIPS register numbers to microMIPS register numbers. */ |
822 | ||
823 | #define mips32_to_micromips_reg_b_map mips32_to_16_reg_map | |
824 | #define mips32_to_micromips_reg_c_map mips32_to_16_reg_map | |
825 | #define mips32_to_micromips_reg_d_map mips32_to_16_reg_map | |
826 | #define mips32_to_micromips_reg_e_map mips32_to_16_reg_map | |
827 | #define mips32_to_micromips_reg_f_map mips32_to_16_reg_map | |
828 | #define mips32_to_micromips_reg_g_map mips32_to_16_reg_map | |
829 | #define mips32_to_micromips_reg_l_map mips32_to_16_reg_map | |
830 | ||
831 | #define X ILLEGAL_REG | |
832 | /* reg type h: 4, 5, 6. */ | |
833 | static const int mips32_to_micromips_reg_h_map[] = | |
834 | { | |
835 | X, X, X, X, 4, 5, 6, X, | |
836 | X, X, X, X, X, X, X, X, | |
837 | X, X, X, X, X, X, X, X, | |
838 | X, X, X, X, X, X, X, X | |
839 | }; | |
840 | ||
841 | /* reg type m: 0, 17, 2, 3, 16, 18, 19, 20. */ | |
842 | static const int mips32_to_micromips_reg_m_map[] = | |
843 | { | |
844 | 0, X, 2, 3, X, X, X, X, | |
845 | X, X, X, X, X, X, X, X, | |
846 | 4, 1, 5, 6, 7, X, X, X, | |
847 | X, X, X, X, X, X, X, X | |
848 | }; | |
849 | ||
850 | /* reg type q: 0, 2-7. 17. */ | |
851 | static const int mips32_to_micromips_reg_q_map[] = | |
852 | { | |
853 | 0, X, 2, 3, 4, 5, 6, 7, | |
854 | X, X, X, X, X, X, X, X, | |
855 | X, 1, X, X, X, X, X, X, | |
856 | X, X, X, X, X, X, X, X | |
857 | }; | |
858 | ||
859 | #define mips32_to_micromips_reg_n_map mips32_to_micromips_reg_m_map | |
860 | #undef X | |
861 | ||
862 | /* Map microMIPS register numbers to normal MIPS register numbers. */ | |
863 | ||
864 | #define micromips_to_32_reg_b_map mips16_to_32_reg_map | |
865 | #define micromips_to_32_reg_c_map mips16_to_32_reg_map | |
866 | #define micromips_to_32_reg_d_map mips16_to_32_reg_map | |
867 | #define micromips_to_32_reg_e_map mips16_to_32_reg_map | |
868 | #define micromips_to_32_reg_f_map mips16_to_32_reg_map | |
869 | #define micromips_to_32_reg_g_map mips16_to_32_reg_map | |
870 | ||
871 | /* The microMIPS registers with type h. */ | |
872 | static const unsigned int micromips_to_32_reg_h_map[] = | |
873 | { | |
874 | 5, 5, 6, 4, 4, 4, 4, 4 | |
875 | }; | |
876 | ||
877 | /* The microMIPS registers with type i. */ | |
878 | static const unsigned int micromips_to_32_reg_i_map[] = | |
879 | { | |
880 | 6, 7, 7, 21, 22, 5, 6, 7 | |
881 | }; | |
882 | ||
883 | #define micromips_to_32_reg_l_map mips16_to_32_reg_map | |
884 | ||
885 | /* The microMIPS registers with type m. */ | |
886 | static const unsigned int micromips_to_32_reg_m_map[] = | |
887 | { | |
888 | 0, 17, 2, 3, 16, 18, 19, 20 | |
889 | }; | |
890 | ||
891 | #define micromips_to_32_reg_n_map micromips_to_32_reg_m_map | |
892 | ||
893 | /* The microMIPS registers with type q. */ | |
894 | static const unsigned int micromips_to_32_reg_q_map[] = | |
895 | { | |
896 | 0, 17, 2, 3, 4, 5, 6, 7 | |
897 | }; | |
898 | ||
899 | /* microMIPS imm type B. */ | |
900 | static const int micromips_imm_b_map[] = | |
901 | { | |
902 | 1, 4, 8, 12, 16, 20, 24, -1 | |
903 | }; | |
904 | ||
905 | /* microMIPS imm type C. */ | |
906 | static const int micromips_imm_c_map[] = | |
907 | { | |
908 | 128, 1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 255, 32768, 65535 | |
909 | }; | |
910 | ||
71400594 RS |
911 | /* Classifies the kind of instructions we're interested in when |
912 | implementing -mfix-vr4120. */ | |
c67a084a NC |
913 | enum fix_vr4120_class |
914 | { | |
71400594 RS |
915 | FIX_VR4120_MACC, |
916 | FIX_VR4120_DMACC, | |
917 | FIX_VR4120_MULT, | |
918 | FIX_VR4120_DMULT, | |
919 | FIX_VR4120_DIV, | |
920 | FIX_VR4120_MTHILO, | |
921 | NUM_FIX_VR4120_CLASSES | |
922 | }; | |
923 | ||
c67a084a NC |
924 | /* ...likewise -mfix-loongson2f-jump. */ |
925 | static bfd_boolean mips_fix_loongson2f_jump; | |
926 | ||
927 | /* ...likewise -mfix-loongson2f-nop. */ | |
928 | static bfd_boolean mips_fix_loongson2f_nop; | |
929 | ||
930 | /* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed. */ | |
931 | static bfd_boolean mips_fix_loongson2f; | |
932 | ||
71400594 RS |
933 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if |
934 | there must be at least one other instruction between an instruction | |
935 | of type X and an instruction of type Y. */ | |
936 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
937 | ||
938 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 939 | static int mips_fix_vr4120; |
4a6a3df4 | 940 | |
7d8e00cf RS |
941 | /* ...likewise -mfix-vr4130. */ |
942 | static int mips_fix_vr4130; | |
943 | ||
6a32d874 CM |
944 | /* ...likewise -mfix-24k. */ |
945 | static int mips_fix_24k; | |
946 | ||
d954098f DD |
947 | /* ...likewise -mfix-cn63xxp1 */ |
948 | static bfd_boolean mips_fix_cn63xxp1; | |
949 | ||
4a6a3df4 AO |
950 | /* We don't relax branches by default, since this causes us to expand |
951 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
952 | fail to compute the offset before expanding the macro to the most | |
953 | efficient expansion. */ | |
954 | ||
955 | static int mips_relax_branch; | |
252b5132 | 956 | \f |
4d7206a2 RS |
957 | /* The expansion of many macros depends on the type of symbol that |
958 | they refer to. For example, when generating position-dependent code, | |
959 | a macro that refers to a symbol may have two different expansions, | |
960 | one which uses GP-relative addresses and one which uses absolute | |
961 | addresses. When generating SVR4-style PIC, a macro may have | |
962 | different expansions for local and global symbols. | |
963 | ||
964 | We handle these situations by generating both sequences and putting | |
965 | them in variant frags. In position-dependent code, the first sequence | |
966 | will be the GP-relative one and the second sequence will be the | |
967 | absolute one. In SVR4 PIC, the first sequence will be for global | |
968 | symbols and the second will be for local symbols. | |
969 | ||
584892a6 RS |
970 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
971 | SECOND are the lengths of the two sequences in bytes. These fields | |
972 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
973 | the subtype has the following flags: | |
4d7206a2 | 974 | |
584892a6 RS |
975 | RELAX_USE_SECOND |
976 | Set if it has been decided that we should use the second | |
977 | sequence instead of the first. | |
978 | ||
979 | RELAX_SECOND_LONGER | |
980 | Set in the first variant frag if the macro's second implementation | |
981 | is longer than its first. This refers to the macro as a whole, | |
982 | not an individual relaxation. | |
983 | ||
984 | RELAX_NOMACRO | |
985 | Set in the first variant frag if the macro appeared in a .set nomacro | |
986 | block and if one alternative requires a warning but the other does not. | |
987 | ||
988 | RELAX_DELAY_SLOT | |
989 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
990 | delay slot. | |
4d7206a2 | 991 | |
df58fc94 RS |
992 | RELAX_DELAY_SLOT_16BIT |
993 | Like RELAX_DELAY_SLOT, but indicates that the delay slot requires a | |
994 | 16-bit instruction. | |
995 | ||
996 | RELAX_DELAY_SLOT_SIZE_FIRST | |
997 | Like RELAX_DELAY_SLOT, but indicates that the first implementation of | |
998 | the macro is of the wrong size for the branch delay slot. | |
999 | ||
1000 | RELAX_DELAY_SLOT_SIZE_SECOND | |
1001 | Like RELAX_DELAY_SLOT, but indicates that the second implementation of | |
1002 | the macro is of the wrong size for the branch delay slot. | |
1003 | ||
4d7206a2 RS |
1004 | The frag's "opcode" points to the first fixup for relaxable code. |
1005 | ||
1006 | Relaxable macros are generated using a sequence such as: | |
1007 | ||
1008 | relax_start (SYMBOL); | |
1009 | ... generate first expansion ... | |
1010 | relax_switch (); | |
1011 | ... generate second expansion ... | |
1012 | relax_end (); | |
1013 | ||
1014 | The code and fixups for the unwanted alternative are discarded | |
1015 | by md_convert_frag. */ | |
584892a6 | 1016 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 1017 | |
584892a6 RS |
1018 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
1019 | #define RELAX_SECOND(X) ((X) & 0xff) | |
1020 | #define RELAX_USE_SECOND 0x10000 | |
1021 | #define RELAX_SECOND_LONGER 0x20000 | |
1022 | #define RELAX_NOMACRO 0x40000 | |
1023 | #define RELAX_DELAY_SLOT 0x80000 | |
df58fc94 RS |
1024 | #define RELAX_DELAY_SLOT_16BIT 0x100000 |
1025 | #define RELAX_DELAY_SLOT_SIZE_FIRST 0x200000 | |
1026 | #define RELAX_DELAY_SLOT_SIZE_SECOND 0x400000 | |
252b5132 | 1027 | |
4a6a3df4 AO |
1028 | /* Branch without likely bit. If label is out of range, we turn: |
1029 | ||
1030 | beq reg1, reg2, label | |
1031 | delay slot | |
1032 | ||
1033 | into | |
1034 | ||
1035 | bne reg1, reg2, 0f | |
1036 | nop | |
1037 | j label | |
1038 | 0: delay slot | |
1039 | ||
1040 | with the following opcode replacements: | |
1041 | ||
1042 | beq <-> bne | |
1043 | blez <-> bgtz | |
1044 | bltz <-> bgez | |
1045 | bc1f <-> bc1t | |
1046 | ||
1047 | bltzal <-> bgezal (with jal label instead of j label) | |
1048 | ||
1049 | Even though keeping the delay slot instruction in the delay slot of | |
1050 | the branch would be more efficient, it would be very tricky to do | |
1051 | correctly, because we'd have to introduce a variable frag *after* | |
1052 | the delay slot instruction, and expand that instead. Let's do it | |
1053 | the easy way for now, even if the branch-not-taken case now costs | |
1054 | one additional instruction. Out-of-range branches are not supposed | |
1055 | to be common, anyway. | |
1056 | ||
1057 | Branch likely. If label is out of range, we turn: | |
1058 | ||
1059 | beql reg1, reg2, label | |
1060 | delay slot (annulled if branch not taken) | |
1061 | ||
1062 | into | |
1063 | ||
1064 | beql reg1, reg2, 1f | |
1065 | nop | |
1066 | beql $0, $0, 2f | |
1067 | nop | |
1068 | 1: j[al] label | |
1069 | delay slot (executed only if branch taken) | |
1070 | 2: | |
1071 | ||
1072 | It would be possible to generate a shorter sequence by losing the | |
1073 | likely bit, generating something like: | |
b34976b6 | 1074 | |
4a6a3df4 AO |
1075 | bne reg1, reg2, 0f |
1076 | nop | |
1077 | j[al] label | |
1078 | delay slot (executed only if branch taken) | |
1079 | 0: | |
1080 | ||
1081 | beql -> bne | |
1082 | bnel -> beq | |
1083 | blezl -> bgtz | |
1084 | bgtzl -> blez | |
1085 | bltzl -> bgez | |
1086 | bgezl -> bltz | |
1087 | bc1fl -> bc1t | |
1088 | bc1tl -> bc1f | |
1089 | ||
1090 | bltzall -> bgezal (with jal label instead of j label) | |
1091 | bgezall -> bltzal (ditto) | |
1092 | ||
1093 | ||
1094 | but it's not clear that it would actually improve performance. */ | |
66b3e8da MR |
1095 | #define RELAX_BRANCH_ENCODE(at, uncond, likely, link, toofar) \ |
1096 | ((relax_substateT) \ | |
1097 | (0xc0000000 \ | |
1098 | | ((at) & 0x1f) \ | |
1099 | | ((toofar) ? 0x20 : 0) \ | |
1100 | | ((link) ? 0x40 : 0) \ | |
1101 | | ((likely) ? 0x80 : 0) \ | |
1102 | | ((uncond) ? 0x100 : 0))) | |
4a6a3df4 | 1103 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
66b3e8da MR |
1104 | #define RELAX_BRANCH_UNCOND(i) (((i) & 0x100) != 0) |
1105 | #define RELAX_BRANCH_LIKELY(i) (((i) & 0x80) != 0) | |
1106 | #define RELAX_BRANCH_LINK(i) (((i) & 0x40) != 0) | |
1107 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 0x20) != 0) | |
1108 | #define RELAX_BRANCH_AT(i) ((i) & 0x1f) | |
4a6a3df4 | 1109 | |
252b5132 RH |
1110 | /* For mips16 code, we use an entirely different form of relaxation. |
1111 | mips16 supports two versions of most instructions which take | |
1112 | immediate values: a small one which takes some small value, and a | |
1113 | larger one which takes a 16 bit value. Since branches also follow | |
1114 | this pattern, relaxing these values is required. | |
1115 | ||
1116 | We can assemble both mips16 and normal MIPS code in a single | |
1117 | object. Therefore, we need to support this type of relaxation at | |
1118 | the same time that we support the relaxation described above. We | |
1119 | use the high bit of the subtype field to distinguish these cases. | |
1120 | ||
1121 | The information we store for this type of relaxation is the | |
1122 | argument code found in the opcode file for this relocation, whether | |
1123 | the user explicitly requested a small or extended form, and whether | |
1124 | the relocation is in a jump or jal delay slot. That tells us the | |
1125 | size of the value, and how it should be stored. We also store | |
1126 | whether the fragment is considered to be extended or not. We also | |
1127 | store whether this is known to be a branch to a different section, | |
1128 | whether we have tried to relax this frag yet, and whether we have | |
1129 | ever extended a PC relative fragment because of a shift count. */ | |
1130 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
1131 | (0x80000000 \ | |
1132 | | ((type) & 0xff) \ | |
1133 | | ((small) ? 0x100 : 0) \ | |
1134 | | ((ext) ? 0x200 : 0) \ | |
1135 | | ((dslot) ? 0x400 : 0) \ | |
1136 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 1137 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
1138 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
1139 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
1140 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
1141 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
1142 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
1143 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
1144 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
1145 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
1146 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
1147 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
1148 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 | 1149 | |
df58fc94 RS |
1150 | /* For microMIPS code, we use relaxation similar to one we use for |
1151 | MIPS16 code. Some instructions that take immediate values support | |
1152 | two encodings: a small one which takes some small value, and a | |
1153 | larger one which takes a 16 bit value. As some branches also follow | |
1154 | this pattern, relaxing these values is required. | |
1155 | ||
1156 | We can assemble both microMIPS and normal MIPS code in a single | |
1157 | object. Therefore, we need to support this type of relaxation at | |
1158 | the same time that we support the relaxation described above. We | |
1159 | use one of the high bits of the subtype field to distinguish these | |
1160 | cases. | |
1161 | ||
1162 | The information we store for this type of relaxation is the argument | |
1163 | code found in the opcode file for this relocation, the register | |
40209cad MR |
1164 | selected as the assembler temporary, whether the branch is |
1165 | unconditional, whether it is compact, whether it stores the link | |
1166 | address implicitly in $ra, whether relaxation of out-of-range 32-bit | |
1167 | branches to a sequence of instructions is enabled, and whether the | |
1168 | displacement of a branch is too large to fit as an immediate argument | |
1169 | of a 16-bit and a 32-bit branch, respectively. */ | |
1170 | #define RELAX_MICROMIPS_ENCODE(type, at, uncond, compact, link, \ | |
1171 | relax32, toofar16, toofar32) \ | |
1172 | (0x40000000 \ | |
1173 | | ((type) & 0xff) \ | |
1174 | | (((at) & 0x1f) << 8) \ | |
1175 | | ((uncond) ? 0x2000 : 0) \ | |
1176 | | ((compact) ? 0x4000 : 0) \ | |
1177 | | ((link) ? 0x8000 : 0) \ | |
1178 | | ((relax32) ? 0x10000 : 0) \ | |
1179 | | ((toofar16) ? 0x20000 : 0) \ | |
1180 | | ((toofar32) ? 0x40000 : 0)) | |
df58fc94 RS |
1181 | #define RELAX_MICROMIPS_P(i) (((i) & 0xc0000000) == 0x40000000) |
1182 | #define RELAX_MICROMIPS_TYPE(i) ((i) & 0xff) | |
1183 | #define RELAX_MICROMIPS_AT(i) (((i) >> 8) & 0x1f) | |
40209cad MR |
1184 | #define RELAX_MICROMIPS_UNCOND(i) (((i) & 0x2000) != 0) |
1185 | #define RELAX_MICROMIPS_COMPACT(i) (((i) & 0x4000) != 0) | |
1186 | #define RELAX_MICROMIPS_LINK(i) (((i) & 0x8000) != 0) | |
1187 | #define RELAX_MICROMIPS_RELAX32(i) (((i) & 0x10000) != 0) | |
1188 | ||
1189 | #define RELAX_MICROMIPS_TOOFAR16(i) (((i) & 0x20000) != 0) | |
1190 | #define RELAX_MICROMIPS_MARK_TOOFAR16(i) ((i) | 0x20000) | |
1191 | #define RELAX_MICROMIPS_CLEAR_TOOFAR16(i) ((i) & ~0x20000) | |
1192 | #define RELAX_MICROMIPS_TOOFAR32(i) (((i) & 0x40000) != 0) | |
1193 | #define RELAX_MICROMIPS_MARK_TOOFAR32(i) ((i) | 0x40000) | |
1194 | #define RELAX_MICROMIPS_CLEAR_TOOFAR32(i) ((i) & ~0x40000) | |
df58fc94 | 1195 | |
885add95 CD |
1196 | /* Is the given value a sign-extended 32-bit value? */ |
1197 | #define IS_SEXT_32BIT_NUM(x) \ | |
1198 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
1199 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
1200 | ||
1201 | /* Is the given value a sign-extended 16-bit value? */ | |
1202 | #define IS_SEXT_16BIT_NUM(x) \ | |
1203 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
1204 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
1205 | ||
df58fc94 RS |
1206 | /* Is the given value a sign-extended 12-bit value? */ |
1207 | #define IS_SEXT_12BIT_NUM(x) \ | |
1208 | (((((x) & 0xfff) ^ 0x800LL) - 0x800LL) == (x)) | |
1209 | ||
2051e8c4 MR |
1210 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
1211 | #define IS_ZEXT_32BIT_NUM(x) \ | |
1212 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
1213 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
1214 | ||
bf12938e RS |
1215 | /* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in |
1216 | VALUE << SHIFT. VALUE is evaluated exactly once. */ | |
1217 | #define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \ | |
1218 | (STRUCT) = (((STRUCT) & ~((MASK) << (SHIFT))) \ | |
1219 | | (((VALUE) & (MASK)) << (SHIFT))) | |
1220 | ||
1221 | /* Extract bits MASK << SHIFT from STRUCT and shift them right | |
1222 | SHIFT places. */ | |
1223 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
1224 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
1225 | ||
1226 | /* Change INSN's opcode so that the operand given by FIELD has value VALUE. | |
1227 | INSN is a mips_cl_insn structure and VALUE is evaluated exactly once. | |
1228 | ||
1229 | include/opcode/mips.h specifies operand fields using the macros | |
1230 | OP_MASK_<FIELD> and OP_SH_<FIELD>. The MIPS16 equivalents start | |
1231 | with "MIPS16OP" instead of "OP". */ | |
df58fc94 RS |
1232 | #define INSERT_OPERAND(MICROMIPS, FIELD, INSN, VALUE) \ |
1233 | do \ | |
1234 | if (!(MICROMIPS)) \ | |
1235 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1236 | OP_MASK_##FIELD, OP_SH_##FIELD); \ | |
1237 | else \ | |
1238 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1239 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD); \ | |
1240 | while (0) | |
bf12938e RS |
1241 | #define MIPS16_INSERT_OPERAND(FIELD, INSN, VALUE) \ |
1242 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
1243 | MIPS16OP_MASK_##FIELD, MIPS16OP_SH_##FIELD) | |
1244 | ||
1245 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ | |
df58fc94 RS |
1246 | #define EXTRACT_OPERAND(MICROMIPS, FIELD, INSN) \ |
1247 | (!(MICROMIPS) \ | |
1248 | ? EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) \ | |
1249 | : EXTRACT_BITS ((INSN).insn_opcode, \ | |
1250 | MICROMIPSOP_MASK_##FIELD, MICROMIPSOP_SH_##FIELD)) | |
bf12938e RS |
1251 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ |
1252 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
1253 | MIPS16OP_MASK_##FIELD, \ | |
1254 | MIPS16OP_SH_##FIELD) | |
4d7206a2 | 1255 | \f |
df58fc94 RS |
1256 | /* Whether or not we are emitting a branch-likely macro. */ |
1257 | static bfd_boolean emit_branch_likely_macro = FALSE; | |
1258 | ||
4d7206a2 RS |
1259 | /* Global variables used when generating relaxable macros. See the |
1260 | comment above RELAX_ENCODE for more details about how relaxation | |
1261 | is used. */ | |
1262 | static struct { | |
1263 | /* 0 if we're not emitting a relaxable macro. | |
1264 | 1 if we're emitting the first of the two relaxation alternatives. | |
1265 | 2 if we're emitting the second alternative. */ | |
1266 | int sequence; | |
1267 | ||
1268 | /* The first relaxable fixup in the current frag. (In other words, | |
1269 | the first fixup that refers to relaxable code.) */ | |
1270 | fixS *first_fixup; | |
1271 | ||
1272 | /* sizes[0] says how many bytes of the first alternative are stored in | |
1273 | the current frag. Likewise sizes[1] for the second alternative. */ | |
1274 | unsigned int sizes[2]; | |
1275 | ||
1276 | /* The symbol on which the choice of sequence depends. */ | |
1277 | symbolS *symbol; | |
1278 | } mips_relax; | |
252b5132 | 1279 | \f |
584892a6 RS |
1280 | /* Global variables used to decide whether a macro needs a warning. */ |
1281 | static struct { | |
1282 | /* True if the macro is in a branch delay slot. */ | |
1283 | bfd_boolean delay_slot_p; | |
1284 | ||
df58fc94 RS |
1285 | /* Set to the length in bytes required if the macro is in a delay slot |
1286 | that requires a specific length of instruction, otherwise zero. */ | |
1287 | unsigned int delay_slot_length; | |
1288 | ||
584892a6 RS |
1289 | /* For relaxable macros, sizes[0] is the length of the first alternative |
1290 | in bytes and sizes[1] is the length of the second alternative. | |
1291 | For non-relaxable macros, both elements give the length of the | |
1292 | macro in bytes. */ | |
1293 | unsigned int sizes[2]; | |
1294 | ||
df58fc94 RS |
1295 | /* For relaxable macros, first_insn_sizes[0] is the length of the first |
1296 | instruction of the first alternative in bytes and first_insn_sizes[1] | |
1297 | is the length of the first instruction of the second alternative. | |
1298 | For non-relaxable macros, both elements give the length of the first | |
1299 | instruction in bytes. | |
1300 | ||
1301 | Set to zero if we haven't yet seen the first instruction. */ | |
1302 | unsigned int first_insn_sizes[2]; | |
1303 | ||
1304 | /* For relaxable macros, insns[0] is the number of instructions for the | |
1305 | first alternative and insns[1] is the number of instructions for the | |
1306 | second alternative. | |
1307 | ||
1308 | For non-relaxable macros, both elements give the number of | |
1309 | instructions for the macro. */ | |
1310 | unsigned int insns[2]; | |
1311 | ||
584892a6 RS |
1312 | /* The first variant frag for this macro. */ |
1313 | fragS *first_frag; | |
1314 | } mips_macro_warning; | |
1315 | \f | |
252b5132 RH |
1316 | /* Prototypes for static functions. */ |
1317 | ||
17a2f251 | 1318 | #define internalError() \ |
252b5132 | 1319 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) |
252b5132 RH |
1320 | |
1321 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
1322 | ||
b34976b6 | 1323 | static void append_insn |
df58fc94 RS |
1324 | (struct mips_cl_insn *, expressionS *, bfd_reloc_code_real_type *, |
1325 | bfd_boolean expansionp); | |
7d10b47d | 1326 | static void mips_no_prev_insn (void); |
c67a084a | 1327 | static void macro_build (expressionS *, const char *, const char *, ...); |
b34976b6 | 1328 | static void mips16_macro_build |
03ea81db | 1329 | (expressionS *, const char *, const char *, va_list *); |
67c0d1eb | 1330 | static void load_register (int, expressionS *, int); |
584892a6 RS |
1331 | static void macro_start (void); |
1332 | static void macro_end (void); | |
17a2f251 TS |
1333 | static void macro (struct mips_cl_insn * ip); |
1334 | static void mips16_macro (struct mips_cl_insn * ip); | |
17a2f251 TS |
1335 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
1336 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 1337 | static void mips16_immed |
17a2f251 TS |
1338 | (char *, unsigned int, int, offsetT, bfd_boolean, bfd_boolean, bfd_boolean, |
1339 | unsigned long *, bfd_boolean *, unsigned short *); | |
5e0116d5 | 1340 | static size_t my_getSmallExpression |
17a2f251 TS |
1341 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1342 | static void my_getExpression (expressionS *, char *); | |
1343 | static void s_align (int); | |
1344 | static void s_change_sec (int); | |
1345 | static void s_change_section (int); | |
1346 | static void s_cons (int); | |
1347 | static void s_float_cons (int); | |
1348 | static void s_mips_globl (int); | |
1349 | static void s_option (int); | |
1350 | static void s_mipsset (int); | |
1351 | static void s_abicalls (int); | |
1352 | static void s_cpload (int); | |
1353 | static void s_cpsetup (int); | |
1354 | static void s_cplocal (int); | |
1355 | static void s_cprestore (int); | |
1356 | static void s_cpreturn (int); | |
741d6ea8 JM |
1357 | static void s_dtprelword (int); |
1358 | static void s_dtpreldword (int); | |
d0f13682 CLT |
1359 | static void s_tprelword (int); |
1360 | static void s_tpreldword (int); | |
17a2f251 TS |
1361 | static void s_gpvalue (int); |
1362 | static void s_gpword (int); | |
1363 | static void s_gpdword (int); | |
1364 | static void s_cpadd (int); | |
1365 | static void s_insn (int); | |
1366 | static void md_obj_begin (void); | |
1367 | static void md_obj_end (void); | |
1368 | static void s_mips_ent (int); | |
1369 | static void s_mips_end (int); | |
1370 | static void s_mips_frame (int); | |
1371 | static void s_mips_mask (int reg_type); | |
1372 | static void s_mips_stab (int); | |
1373 | static void s_mips_weakext (int); | |
1374 | static void s_mips_file (int); | |
1375 | static void s_mips_loc (int); | |
1376 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1377 | static int relaxed_branch_length (fragS *, asection *, int); |
17a2f251 | 1378 | static int validate_mips_insn (const struct mips_opcode *); |
df58fc94 RS |
1379 | static int validate_micromips_insn (const struct mips_opcode *); |
1380 | static int relaxed_micromips_16bit_branch_length (fragS *, asection *, int); | |
1381 | static int relaxed_micromips_32bit_branch_length (fragS *, asection *, int); | |
e7af610e NC |
1382 | |
1383 | /* Table and functions used to map between CPU/ISA names, and | |
1384 | ISA levels, and CPU numbers. */ | |
1385 | ||
e972090a NC |
1386 | struct mips_cpu_info |
1387 | { | |
e7af610e | 1388 | const char *name; /* CPU or ISA name. */ |
ad3fea08 | 1389 | int flags; /* ASEs available, or ISA flag. */ |
e7af610e NC |
1390 | int isa; /* ISA level. */ |
1391 | int cpu; /* CPU number (default CPU if ISA). */ | |
1392 | }; | |
1393 | ||
ad3fea08 TS |
1394 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
1395 | #define MIPS_CPU_ASE_SMARTMIPS 0x0002 /* CPU implements SmartMIPS ASE */ | |
1396 | #define MIPS_CPU_ASE_DSP 0x0004 /* CPU implements DSP ASE */ | |
1397 | #define MIPS_CPU_ASE_MT 0x0008 /* CPU implements MT ASE */ | |
1398 | #define MIPS_CPU_ASE_MIPS3D 0x0010 /* CPU implements MIPS-3D ASE */ | |
1399 | #define MIPS_CPU_ASE_MDMX 0x0020 /* CPU implements MDMX ASE */ | |
8b082fb1 | 1400 | #define MIPS_CPU_ASE_DSPR2 0x0040 /* CPU implements DSP R2 ASE */ |
dec0624d | 1401 | #define MIPS_CPU_ASE_MCU 0x0080 /* CPU implements MCU ASE */ |
ad3fea08 | 1402 | |
17a2f251 TS |
1403 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1404 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1405 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 RH |
1406 | \f |
1407 | /* Pseudo-op table. | |
1408 | ||
1409 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1410 | should be defined here, but are currently unsupported: .alias, | |
1411 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1412 | ||
1413 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1414 | specific to the type of debugging information being generated, and | |
1415 | should be defined by the object format: .aent, .begin, .bend, | |
1416 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1417 | .vreg. | |
1418 | ||
1419 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1420 | not MIPS CPU specific, but are also not specific to the object file | |
1421 | format. This file is probably the best place to define them, but | |
d84bcf09 | 1422 | they are not currently supported: .asm0, .endr, .lab, .struct. */ |
252b5132 | 1423 | |
e972090a NC |
1424 | static const pseudo_typeS mips_pseudo_table[] = |
1425 | { | |
beae10d5 | 1426 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1427 | {"option", s_option, 0}, |
1428 | {"set", s_mipsset, 0}, | |
1429 | {"rdata", s_change_sec, 'r'}, | |
1430 | {"sdata", s_change_sec, 's'}, | |
1431 | {"livereg", s_ignore, 0}, | |
1432 | {"abicalls", s_abicalls, 0}, | |
1433 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1434 | {"cpsetup", s_cpsetup, 0}, |
1435 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1436 | {"cprestore", s_cprestore, 0}, |
6478892d | 1437 | {"cpreturn", s_cpreturn, 0}, |
741d6ea8 JM |
1438 | {"dtprelword", s_dtprelword, 0}, |
1439 | {"dtpreldword", s_dtpreldword, 0}, | |
d0f13682 CLT |
1440 | {"tprelword", s_tprelword, 0}, |
1441 | {"tpreldword", s_tpreldword, 0}, | |
6478892d | 1442 | {"gpvalue", s_gpvalue, 0}, |
252b5132 | 1443 | {"gpword", s_gpword, 0}, |
10181a0d | 1444 | {"gpdword", s_gpdword, 0}, |
252b5132 RH |
1445 | {"cpadd", s_cpadd, 0}, |
1446 | {"insn", s_insn, 0}, | |
1447 | ||
beae10d5 | 1448 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 | 1449 | chips. */ |
38a57ae7 | 1450 | {"asciiz", stringer, 8 + 1}, |
252b5132 RH |
1451 | {"bss", s_change_sec, 'b'}, |
1452 | {"err", s_err, 0}, | |
1453 | {"half", s_cons, 1}, | |
1454 | {"dword", s_cons, 3}, | |
1455 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1456 | {"origin", s_org, 0}, |
1457 | {"repeat", s_rept, 0}, | |
252b5132 | 1458 | |
998b3c36 MR |
1459 | /* For MIPS this is non-standard, but we define it for consistency. */ |
1460 | {"sbss", s_change_sec, 'B'}, | |
1461 | ||
beae10d5 | 1462 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1463 | here for one reason or another. */ |
1464 | {"align", s_align, 0}, | |
1465 | {"byte", s_cons, 0}, | |
1466 | {"data", s_change_sec, 'd'}, | |
1467 | {"double", s_float_cons, 'd'}, | |
1468 | {"float", s_float_cons, 'f'}, | |
1469 | {"globl", s_mips_globl, 0}, | |
1470 | {"global", s_mips_globl, 0}, | |
1471 | {"hword", s_cons, 1}, | |
1472 | {"int", s_cons, 2}, | |
1473 | {"long", s_cons, 2}, | |
1474 | {"octa", s_cons, 4}, | |
1475 | {"quad", s_cons, 3}, | |
cca86cc8 | 1476 | {"section", s_change_section, 0}, |
252b5132 RH |
1477 | {"short", s_cons, 1}, |
1478 | {"single", s_float_cons, 'f'}, | |
1479 | {"stabn", s_mips_stab, 'n'}, | |
1480 | {"text", s_change_sec, 't'}, | |
1481 | {"word", s_cons, 2}, | |
add56521 | 1482 | |
add56521 | 1483 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1484 | |
43841e91 | 1485 | { NULL, NULL, 0 }, |
252b5132 RH |
1486 | }; |
1487 | ||
e972090a NC |
1488 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1489 | { | |
beae10d5 KH |
1490 | /* These pseudo-ops should be defined by the object file format. |
1491 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1492 | {"aent", s_mips_ent, 1}, |
1493 | {"bgnb", s_ignore, 0}, | |
1494 | {"end", s_mips_end, 0}, | |
1495 | {"endb", s_ignore, 0}, | |
1496 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1497 | {"file", s_mips_file, 0}, |
252b5132 RH |
1498 | {"fmask", s_mips_mask, 'F'}, |
1499 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1500 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1501 | {"mask", s_mips_mask, 'R'}, |
1502 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1503 | { NULL, NULL, 0 }, |
252b5132 RH |
1504 | }; |
1505 | ||
3ae8dd8d MR |
1506 | /* Export the ABI address size for use by TC_ADDRESS_BYTES for the |
1507 | purpose of the `.dc.a' internal pseudo-op. */ | |
1508 | ||
1509 | int | |
1510 | mips_address_bytes (void) | |
1511 | { | |
1512 | return HAVE_64BIT_ADDRESSES ? 8 : 4; | |
1513 | } | |
1514 | ||
17a2f251 | 1515 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1516 | |
1517 | void | |
17a2f251 | 1518 | mips_pop_insert (void) |
252b5132 RH |
1519 | { |
1520 | pop_insert (mips_pseudo_table); | |
1521 | if (! ECOFF_DEBUGGING) | |
1522 | pop_insert (mips_nonecoff_pseudo_table); | |
1523 | } | |
1524 | \f | |
1525 | /* Symbols labelling the current insn. */ | |
1526 | ||
e972090a NC |
1527 | struct insn_label_list |
1528 | { | |
252b5132 RH |
1529 | struct insn_label_list *next; |
1530 | symbolS *label; | |
1531 | }; | |
1532 | ||
252b5132 | 1533 | static struct insn_label_list *free_insn_labels; |
742a56fe | 1534 | #define label_list tc_segment_info_data.labels |
252b5132 | 1535 | |
17a2f251 | 1536 | static void mips_clear_insn_labels (void); |
df58fc94 RS |
1537 | static void mips_mark_labels (void); |
1538 | static void mips_compressed_mark_labels (void); | |
252b5132 RH |
1539 | |
1540 | static inline void | |
17a2f251 | 1541 | mips_clear_insn_labels (void) |
252b5132 RH |
1542 | { |
1543 | register struct insn_label_list **pl; | |
a8dbcb85 | 1544 | segment_info_type *si; |
252b5132 | 1545 | |
a8dbcb85 TS |
1546 | if (now_seg) |
1547 | { | |
1548 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1549 | ; | |
1550 | ||
1551 | si = seg_info (now_seg); | |
1552 | *pl = si->label_list; | |
1553 | si->label_list = NULL; | |
1554 | } | |
252b5132 | 1555 | } |
a8dbcb85 | 1556 | |
df58fc94 RS |
1557 | /* Mark instruction labels in MIPS16/microMIPS mode. */ |
1558 | ||
1559 | static inline void | |
1560 | mips_mark_labels (void) | |
1561 | { | |
1562 | if (HAVE_CODE_COMPRESSION) | |
1563 | mips_compressed_mark_labels (); | |
1564 | } | |
252b5132 RH |
1565 | \f |
1566 | static char *expr_end; | |
1567 | ||
1568 | /* Expressions which appear in instructions. These are set by | |
1569 | mips_ip. */ | |
1570 | ||
1571 | static expressionS imm_expr; | |
5f74bc13 | 1572 | static expressionS imm2_expr; |
252b5132 RH |
1573 | static expressionS offset_expr; |
1574 | ||
1575 | /* Relocs associated with imm_expr and offset_expr. */ | |
1576 | ||
f6688943 TS |
1577 | static bfd_reloc_code_real_type imm_reloc[3] |
1578 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
1579 | static bfd_reloc_code_real_type offset_reloc[3] | |
1580 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1581 | |
df58fc94 RS |
1582 | /* This is set to the resulting size of the instruction to be produced |
1583 | by mips16_ip if an explicit extension is used or by mips_ip if an | |
1584 | explicit size is supplied. */ | |
252b5132 | 1585 | |
df58fc94 | 1586 | static unsigned int forced_insn_length; |
252b5132 | 1587 | |
7ed4a06a | 1588 | #ifdef OBJ_ELF |
ecb4347a DJ |
1589 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1590 | ECOFF debugging. */ | |
252b5132 RH |
1591 | |
1592 | static segT pdr_seg; | |
7ed4a06a | 1593 | #endif |
252b5132 | 1594 | |
e013f690 TS |
1595 | /* The default target format to use. */ |
1596 | ||
aeffff67 RS |
1597 | #if defined (TE_FreeBSD) |
1598 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips-freebsd" | |
1599 | #elif defined (TE_TMIPS) | |
1600 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX "trad" ENDIAN "mips" | |
1601 | #else | |
1602 | #define ELF_TARGET(PREFIX, ENDIAN) PREFIX ENDIAN "mips" | |
1603 | #endif | |
1604 | ||
e013f690 | 1605 | const char * |
17a2f251 | 1606 | mips_target_format (void) |
e013f690 TS |
1607 | { |
1608 | switch (OUTPUT_FLAVOR) | |
1609 | { | |
e013f690 TS |
1610 | case bfd_target_ecoff_flavour: |
1611 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
1612 | case bfd_target_coff_flavour: | |
1613 | return "pe-mips"; | |
1614 | case bfd_target_elf_flavour: | |
0a44bf69 RS |
1615 | #ifdef TE_VXWORKS |
1616 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1617 | return (target_big_endian | |
1618 | ? "elf32-bigmips-vxworks" | |
1619 | : "elf32-littlemips-vxworks"); | |
1620 | #endif | |
e013f690 | 1621 | return (target_big_endian |
cfe86eaa | 1622 | ? (HAVE_64BIT_OBJECTS |
aeffff67 | 1623 | ? ELF_TARGET ("elf64-", "big") |
cfe86eaa | 1624 | : (HAVE_NEWABI |
aeffff67 RS |
1625 | ? ELF_TARGET ("elf32-n", "big") |
1626 | : ELF_TARGET ("elf32-", "big"))) | |
cfe86eaa | 1627 | : (HAVE_64BIT_OBJECTS |
aeffff67 | 1628 | ? ELF_TARGET ("elf64-", "little") |
cfe86eaa | 1629 | : (HAVE_NEWABI |
aeffff67 RS |
1630 | ? ELF_TARGET ("elf32-n", "little") |
1631 | : ELF_TARGET ("elf32-", "little")))); | |
e013f690 TS |
1632 | default: |
1633 | abort (); | |
1634 | return NULL; | |
1635 | } | |
1636 | } | |
1637 | ||
df58fc94 RS |
1638 | /* Return the length of a microMIPS instruction in bytes. If bits of |
1639 | the mask beyond the low 16 are 0, then it is a 16-bit instruction. | |
1640 | Otherwise assume a 32-bit instruction; 48-bit instructions (0x1f | |
1641 | major opcode) will require further modifications to the opcode | |
1642 | table. */ | |
1643 | ||
1644 | static inline unsigned int | |
1645 | micromips_insn_length (const struct mips_opcode *mo) | |
1646 | { | |
1647 | return (mo->mask >> 16) == 0 ? 2 : 4; | |
1648 | } | |
1649 | ||
1e915849 RS |
1650 | /* Return the length of instruction INSN. */ |
1651 | ||
1652 | static inline unsigned int | |
1653 | insn_length (const struct mips_cl_insn *insn) | |
1654 | { | |
df58fc94 RS |
1655 | if (mips_opts.micromips) |
1656 | return micromips_insn_length (insn->insn_mo); | |
1657 | else if (mips_opts.mips16) | |
1658 | return insn->mips16_absolute_jump_p || insn->use_extend ? 4 : 2; | |
1659 | else | |
1e915849 | 1660 | return 4; |
1e915849 RS |
1661 | } |
1662 | ||
1663 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
1664 | ||
1665 | static void | |
1666 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
1667 | { | |
1668 | size_t i; | |
1669 | ||
1670 | insn->insn_mo = mo; | |
1671 | insn->use_extend = FALSE; | |
1672 | insn->extend = 0; | |
1673 | insn->insn_opcode = mo->match; | |
1674 | insn->frag = NULL; | |
1675 | insn->where = 0; | |
1676 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1677 | insn->fixp[i] = NULL; | |
1678 | insn->fixed_p = (mips_opts.noreorder > 0); | |
1679 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
1680 | insn->mips16_absolute_jump_p = 0; | |
15be625d | 1681 | insn->complete_p = 0; |
1e915849 RS |
1682 | } |
1683 | ||
df58fc94 | 1684 | /* Record the current MIPS16/microMIPS mode in now_seg. */ |
742a56fe RS |
1685 | |
1686 | static void | |
df58fc94 | 1687 | mips_record_compressed_mode (void) |
742a56fe RS |
1688 | { |
1689 | segment_info_type *si; | |
1690 | ||
1691 | si = seg_info (now_seg); | |
1692 | if (si->tc_segment_info_data.mips16 != mips_opts.mips16) | |
1693 | si->tc_segment_info_data.mips16 = mips_opts.mips16; | |
df58fc94 RS |
1694 | if (si->tc_segment_info_data.micromips != mips_opts.micromips) |
1695 | si->tc_segment_info_data.micromips = mips_opts.micromips; | |
742a56fe RS |
1696 | } |
1697 | ||
1e915849 RS |
1698 | /* Install INSN at the location specified by its "frag" and "where" fields. */ |
1699 | ||
1700 | static void | |
1701 | install_insn (const struct mips_cl_insn *insn) | |
1702 | { | |
1703 | char *f = insn->frag->fr_literal + insn->where; | |
df58fc94 | 1704 | if (!HAVE_CODE_COMPRESSION) |
1e915849 | 1705 | md_number_to_chars (f, insn->insn_opcode, 4); |
df58fc94 RS |
1706 | else if (mips_opts.micromips) |
1707 | { | |
1708 | unsigned int length = insn_length (insn); | |
1709 | if (length == 2) | |
1710 | md_number_to_chars (f, insn->insn_opcode, 2); | |
1711 | else if (length == 4) | |
1712 | { | |
1713 | md_number_to_chars (f, insn->insn_opcode >> 16, 2); | |
1714 | f += 2; | |
1715 | md_number_to_chars (f, insn->insn_opcode & 0xffff, 2); | |
1716 | } | |
1717 | else | |
1718 | as_bad (_("48-bit microMIPS instructions are not supported")); | |
1719 | } | |
1e915849 RS |
1720 | else if (insn->mips16_absolute_jump_p) |
1721 | { | |
1722 | md_number_to_chars (f, insn->insn_opcode >> 16, 2); | |
1723 | md_number_to_chars (f + 2, insn->insn_opcode & 0xffff, 2); | |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | if (insn->use_extend) | |
1728 | { | |
1729 | md_number_to_chars (f, 0xf000 | insn->extend, 2); | |
1730 | f += 2; | |
1731 | } | |
1732 | md_number_to_chars (f, insn->insn_opcode, 2); | |
1733 | } | |
df58fc94 | 1734 | mips_record_compressed_mode (); |
1e915849 RS |
1735 | } |
1736 | ||
1737 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
1738 | and install the opcode in the new location. */ | |
1739 | ||
1740 | static void | |
1741 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
1742 | { | |
1743 | size_t i; | |
1744 | ||
1745 | insn->frag = frag; | |
1746 | insn->where = where; | |
1747 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1748 | if (insn->fixp[i] != NULL) | |
1749 | { | |
1750 | insn->fixp[i]->fx_frag = frag; | |
1751 | insn->fixp[i]->fx_where = where; | |
1752 | } | |
1753 | install_insn (insn); | |
1754 | } | |
1755 | ||
1756 | /* Add INSN to the end of the output. */ | |
1757 | ||
1758 | static void | |
1759 | add_fixed_insn (struct mips_cl_insn *insn) | |
1760 | { | |
1761 | char *f = frag_more (insn_length (insn)); | |
1762 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
1763 | } | |
1764 | ||
1765 | /* Start a variant frag and move INSN to the start of the variant part, | |
1766 | marking it as fixed. The other arguments are as for frag_var. */ | |
1767 | ||
1768 | static void | |
1769 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
1770 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
1771 | { | |
1772 | frag_grow (max_chars); | |
1773 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
1774 | insn->fixed_p = 1; | |
1775 | frag_var (rs_machine_dependent, max_chars, var, | |
1776 | subtype, symbol, offset, NULL); | |
1777 | } | |
1778 | ||
1779 | /* Insert N copies of INSN into the history buffer, starting at | |
1780 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
1781 | ||
1782 | static void | |
1783 | insert_into_history (unsigned int first, unsigned int n, | |
1784 | const struct mips_cl_insn *insn) | |
1785 | { | |
1786 | if (mips_relax.sequence != 2) | |
1787 | { | |
1788 | unsigned int i; | |
1789 | ||
1790 | for (i = ARRAY_SIZE (history); i-- > first;) | |
1791 | if (i >= first + n) | |
1792 | history[i] = history[i - n]; | |
1793 | else | |
1794 | history[i] = *insn; | |
1795 | } | |
1796 | } | |
1797 | ||
71400594 RS |
1798 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
1799 | the idea is to make it obvious at a glance that each errata is | |
1800 | included. */ | |
1801 | ||
1802 | static void | |
1803 | init_vr4120_conflicts (void) | |
1804 | { | |
1805 | #define CONFLICT(FIRST, SECOND) \ | |
1806 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
1807 | ||
1808 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
1809 | CONFLICT (MACC, DIV); | |
1810 | CONFLICT (DMACC, DIV); | |
1811 | ||
1812 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
1813 | CONFLICT (DMULT, DMULT); | |
1814 | CONFLICT (DMULT, DMACC); | |
1815 | CONFLICT (DMACC, DMULT); | |
1816 | CONFLICT (DMACC, DMACC); | |
1817 | ||
1818 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
1819 | CONFLICT (MACC, MTHILO); | |
1820 | CONFLICT (DMACC, MTHILO); | |
1821 | ||
1822 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
1823 | instruction is executed immediately after a MACC or DMACC | |
1824 | instruction, the result of [either instruction] is incorrect." */ | |
1825 | CONFLICT (MACC, MULT); | |
1826 | CONFLICT (MACC, DMULT); | |
1827 | CONFLICT (DMACC, MULT); | |
1828 | CONFLICT (DMACC, DMULT); | |
1829 | ||
1830 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
1831 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
1832 | DDIV or DDIVU instruction, the result of the MACC or | |
1833 | DMACC instruction is incorrect.". */ | |
1834 | CONFLICT (DMULT, MACC); | |
1835 | CONFLICT (DMULT, DMACC); | |
1836 | CONFLICT (DIV, MACC); | |
1837 | CONFLICT (DIV, DMACC); | |
1838 | ||
1839 | #undef CONFLICT | |
1840 | } | |
1841 | ||
707bfff6 TS |
1842 | struct regname { |
1843 | const char *name; | |
1844 | unsigned int num; | |
1845 | }; | |
1846 | ||
1847 | #define RTYPE_MASK 0x1ff00 | |
1848 | #define RTYPE_NUM 0x00100 | |
1849 | #define RTYPE_FPU 0x00200 | |
1850 | #define RTYPE_FCC 0x00400 | |
1851 | #define RTYPE_VEC 0x00800 | |
1852 | #define RTYPE_GP 0x01000 | |
1853 | #define RTYPE_CP0 0x02000 | |
1854 | #define RTYPE_PC 0x04000 | |
1855 | #define RTYPE_ACC 0x08000 | |
1856 | #define RTYPE_CCC 0x10000 | |
1857 | #define RNUM_MASK 0x000ff | |
1858 | #define RWARN 0x80000 | |
1859 | ||
1860 | #define GENERIC_REGISTER_NUMBERS \ | |
1861 | {"$0", RTYPE_NUM | 0}, \ | |
1862 | {"$1", RTYPE_NUM | 1}, \ | |
1863 | {"$2", RTYPE_NUM | 2}, \ | |
1864 | {"$3", RTYPE_NUM | 3}, \ | |
1865 | {"$4", RTYPE_NUM | 4}, \ | |
1866 | {"$5", RTYPE_NUM | 5}, \ | |
1867 | {"$6", RTYPE_NUM | 6}, \ | |
1868 | {"$7", RTYPE_NUM | 7}, \ | |
1869 | {"$8", RTYPE_NUM | 8}, \ | |
1870 | {"$9", RTYPE_NUM | 9}, \ | |
1871 | {"$10", RTYPE_NUM | 10}, \ | |
1872 | {"$11", RTYPE_NUM | 11}, \ | |
1873 | {"$12", RTYPE_NUM | 12}, \ | |
1874 | {"$13", RTYPE_NUM | 13}, \ | |
1875 | {"$14", RTYPE_NUM | 14}, \ | |
1876 | {"$15", RTYPE_NUM | 15}, \ | |
1877 | {"$16", RTYPE_NUM | 16}, \ | |
1878 | {"$17", RTYPE_NUM | 17}, \ | |
1879 | {"$18", RTYPE_NUM | 18}, \ | |
1880 | {"$19", RTYPE_NUM | 19}, \ | |
1881 | {"$20", RTYPE_NUM | 20}, \ | |
1882 | {"$21", RTYPE_NUM | 21}, \ | |
1883 | {"$22", RTYPE_NUM | 22}, \ | |
1884 | {"$23", RTYPE_NUM | 23}, \ | |
1885 | {"$24", RTYPE_NUM | 24}, \ | |
1886 | {"$25", RTYPE_NUM | 25}, \ | |
1887 | {"$26", RTYPE_NUM | 26}, \ | |
1888 | {"$27", RTYPE_NUM | 27}, \ | |
1889 | {"$28", RTYPE_NUM | 28}, \ | |
1890 | {"$29", RTYPE_NUM | 29}, \ | |
1891 | {"$30", RTYPE_NUM | 30}, \ | |
1892 | {"$31", RTYPE_NUM | 31} | |
1893 | ||
1894 | #define FPU_REGISTER_NAMES \ | |
1895 | {"$f0", RTYPE_FPU | 0}, \ | |
1896 | {"$f1", RTYPE_FPU | 1}, \ | |
1897 | {"$f2", RTYPE_FPU | 2}, \ | |
1898 | {"$f3", RTYPE_FPU | 3}, \ | |
1899 | {"$f4", RTYPE_FPU | 4}, \ | |
1900 | {"$f5", RTYPE_FPU | 5}, \ | |
1901 | {"$f6", RTYPE_FPU | 6}, \ | |
1902 | {"$f7", RTYPE_FPU | 7}, \ | |
1903 | {"$f8", RTYPE_FPU | 8}, \ | |
1904 | {"$f9", RTYPE_FPU | 9}, \ | |
1905 | {"$f10", RTYPE_FPU | 10}, \ | |
1906 | {"$f11", RTYPE_FPU | 11}, \ | |
1907 | {"$f12", RTYPE_FPU | 12}, \ | |
1908 | {"$f13", RTYPE_FPU | 13}, \ | |
1909 | {"$f14", RTYPE_FPU | 14}, \ | |
1910 | {"$f15", RTYPE_FPU | 15}, \ | |
1911 | {"$f16", RTYPE_FPU | 16}, \ | |
1912 | {"$f17", RTYPE_FPU | 17}, \ | |
1913 | {"$f18", RTYPE_FPU | 18}, \ | |
1914 | {"$f19", RTYPE_FPU | 19}, \ | |
1915 | {"$f20", RTYPE_FPU | 20}, \ | |
1916 | {"$f21", RTYPE_FPU | 21}, \ | |
1917 | {"$f22", RTYPE_FPU | 22}, \ | |
1918 | {"$f23", RTYPE_FPU | 23}, \ | |
1919 | {"$f24", RTYPE_FPU | 24}, \ | |
1920 | {"$f25", RTYPE_FPU | 25}, \ | |
1921 | {"$f26", RTYPE_FPU | 26}, \ | |
1922 | {"$f27", RTYPE_FPU | 27}, \ | |
1923 | {"$f28", RTYPE_FPU | 28}, \ | |
1924 | {"$f29", RTYPE_FPU | 29}, \ | |
1925 | {"$f30", RTYPE_FPU | 30}, \ | |
1926 | {"$f31", RTYPE_FPU | 31} | |
1927 | ||
1928 | #define FPU_CONDITION_CODE_NAMES \ | |
1929 | {"$fcc0", RTYPE_FCC | 0}, \ | |
1930 | {"$fcc1", RTYPE_FCC | 1}, \ | |
1931 | {"$fcc2", RTYPE_FCC | 2}, \ | |
1932 | {"$fcc3", RTYPE_FCC | 3}, \ | |
1933 | {"$fcc4", RTYPE_FCC | 4}, \ | |
1934 | {"$fcc5", RTYPE_FCC | 5}, \ | |
1935 | {"$fcc6", RTYPE_FCC | 6}, \ | |
1936 | {"$fcc7", RTYPE_FCC | 7} | |
1937 | ||
1938 | #define COPROC_CONDITION_CODE_NAMES \ | |
1939 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
1940 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
1941 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
1942 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
1943 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
1944 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
1945 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
1946 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
1947 | ||
1948 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
1949 | {"$a4", RTYPE_GP | 8}, \ | |
1950 | {"$a5", RTYPE_GP | 9}, \ | |
1951 | {"$a6", RTYPE_GP | 10}, \ | |
1952 | {"$a7", RTYPE_GP | 11}, \ | |
1953 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
1954 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
1955 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
1956 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
1957 | {"$t0", RTYPE_GP | 12}, \ | |
1958 | {"$t1", RTYPE_GP | 13}, \ | |
1959 | {"$t2", RTYPE_GP | 14}, \ | |
1960 | {"$t3", RTYPE_GP | 15} | |
1961 | ||
1962 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
1963 | {"$t0", RTYPE_GP | 8}, \ | |
1964 | {"$t1", RTYPE_GP | 9}, \ | |
1965 | {"$t2", RTYPE_GP | 10}, \ | |
1966 | {"$t3", RTYPE_GP | 11}, \ | |
1967 | {"$t4", RTYPE_GP | 12}, \ | |
1968 | {"$t5", RTYPE_GP | 13}, \ | |
1969 | {"$t6", RTYPE_GP | 14}, \ | |
1970 | {"$t7", RTYPE_GP | 15}, \ | |
1971 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
1972 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
1973 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
1974 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ | |
1975 | ||
1976 | /* Remaining symbolic register names */ | |
1977 | #define SYMBOLIC_REGISTER_NAMES \ | |
1978 | {"$zero", RTYPE_GP | 0}, \ | |
1979 | {"$at", RTYPE_GP | 1}, \ | |
1980 | {"$AT", RTYPE_GP | 1}, \ | |
1981 | {"$v0", RTYPE_GP | 2}, \ | |
1982 | {"$v1", RTYPE_GP | 3}, \ | |
1983 | {"$a0", RTYPE_GP | 4}, \ | |
1984 | {"$a1", RTYPE_GP | 5}, \ | |
1985 | {"$a2", RTYPE_GP | 6}, \ | |
1986 | {"$a3", RTYPE_GP | 7}, \ | |
1987 | {"$s0", RTYPE_GP | 16}, \ | |
1988 | {"$s1", RTYPE_GP | 17}, \ | |
1989 | {"$s2", RTYPE_GP | 18}, \ | |
1990 | {"$s3", RTYPE_GP | 19}, \ | |
1991 | {"$s4", RTYPE_GP | 20}, \ | |
1992 | {"$s5", RTYPE_GP | 21}, \ | |
1993 | {"$s6", RTYPE_GP | 22}, \ | |
1994 | {"$s7", RTYPE_GP | 23}, \ | |
1995 | {"$t8", RTYPE_GP | 24}, \ | |
1996 | {"$t9", RTYPE_GP | 25}, \ | |
1997 | {"$k0", RTYPE_GP | 26}, \ | |
1998 | {"$kt0", RTYPE_GP | 26}, \ | |
1999 | {"$k1", RTYPE_GP | 27}, \ | |
2000 | {"$kt1", RTYPE_GP | 27}, \ | |
2001 | {"$gp", RTYPE_GP | 28}, \ | |
2002 | {"$sp", RTYPE_GP | 29}, \ | |
2003 | {"$s8", RTYPE_GP | 30}, \ | |
2004 | {"$fp", RTYPE_GP | 30}, \ | |
2005 | {"$ra", RTYPE_GP | 31} | |
2006 | ||
2007 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
2008 | {"$pc", RTYPE_PC | 0} | |
2009 | ||
2010 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
2011 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
2012 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
2013 | {"$v2", RTYPE_VEC | 2}, \ | |
2014 | {"$v3", RTYPE_VEC | 3}, \ | |
2015 | {"$v4", RTYPE_VEC | 4}, \ | |
2016 | {"$v5", RTYPE_VEC | 5}, \ | |
2017 | {"$v6", RTYPE_VEC | 6}, \ | |
2018 | {"$v7", RTYPE_VEC | 7}, \ | |
2019 | {"$v8", RTYPE_VEC | 8}, \ | |
2020 | {"$v9", RTYPE_VEC | 9}, \ | |
2021 | {"$v10", RTYPE_VEC | 10}, \ | |
2022 | {"$v11", RTYPE_VEC | 11}, \ | |
2023 | {"$v12", RTYPE_VEC | 12}, \ | |
2024 | {"$v13", RTYPE_VEC | 13}, \ | |
2025 | {"$v14", RTYPE_VEC | 14}, \ | |
2026 | {"$v15", RTYPE_VEC | 15}, \ | |
2027 | {"$v16", RTYPE_VEC | 16}, \ | |
2028 | {"$v17", RTYPE_VEC | 17}, \ | |
2029 | {"$v18", RTYPE_VEC | 18}, \ | |
2030 | {"$v19", RTYPE_VEC | 19}, \ | |
2031 | {"$v20", RTYPE_VEC | 20}, \ | |
2032 | {"$v21", RTYPE_VEC | 21}, \ | |
2033 | {"$v22", RTYPE_VEC | 22}, \ | |
2034 | {"$v23", RTYPE_VEC | 23}, \ | |
2035 | {"$v24", RTYPE_VEC | 24}, \ | |
2036 | {"$v25", RTYPE_VEC | 25}, \ | |
2037 | {"$v26", RTYPE_VEC | 26}, \ | |
2038 | {"$v27", RTYPE_VEC | 27}, \ | |
2039 | {"$v28", RTYPE_VEC | 28}, \ | |
2040 | {"$v29", RTYPE_VEC | 29}, \ | |
2041 | {"$v30", RTYPE_VEC | 30}, \ | |
2042 | {"$v31", RTYPE_VEC | 31} | |
2043 | ||
2044 | #define MIPS_DSP_ACCUMULATOR_NAMES \ | |
2045 | {"$ac0", RTYPE_ACC | 0}, \ | |
2046 | {"$ac1", RTYPE_ACC | 1}, \ | |
2047 | {"$ac2", RTYPE_ACC | 2}, \ | |
2048 | {"$ac3", RTYPE_ACC | 3} | |
2049 | ||
2050 | static const struct regname reg_names[] = { | |
2051 | GENERIC_REGISTER_NUMBERS, | |
2052 | FPU_REGISTER_NAMES, | |
2053 | FPU_CONDITION_CODE_NAMES, | |
2054 | COPROC_CONDITION_CODE_NAMES, | |
2055 | ||
2056 | /* The $txx registers depends on the abi, | |
2057 | these will be added later into the symbol table from | |
2058 | one of the tables below once mips_abi is set after | |
2059 | parsing of arguments from the command line. */ | |
2060 | SYMBOLIC_REGISTER_NAMES, | |
2061 | ||
2062 | MIPS16_SPECIAL_REGISTER_NAMES, | |
2063 | MDMX_VECTOR_REGISTER_NAMES, | |
2064 | MIPS_DSP_ACCUMULATOR_NAMES, | |
2065 | {0, 0} | |
2066 | }; | |
2067 | ||
2068 | static const struct regname reg_names_o32[] = { | |
2069 | O32_SYMBOLIC_REGISTER_NAMES, | |
2070 | {0, 0} | |
2071 | }; | |
2072 | ||
2073 | static const struct regname reg_names_n32n64[] = { | |
2074 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
2075 | {0, 0} | |
2076 | }; | |
2077 | ||
df58fc94 RS |
2078 | /* Check if S points at a valid register specifier according to TYPES. |
2079 | If so, then return 1, advance S to consume the specifier and store | |
2080 | the register's number in REGNOP, otherwise return 0. */ | |
2081 | ||
707bfff6 TS |
2082 | static int |
2083 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
2084 | { | |
2085 | symbolS *symbolP; | |
2086 | char *e; | |
2087 | char save_c; | |
2088 | int reg = -1; | |
2089 | ||
2090 | /* Find end of name. */ | |
2091 | e = *s; | |
2092 | if (is_name_beginner (*e)) | |
2093 | ++e; | |
2094 | while (is_part_of_name (*e)) | |
2095 | ++e; | |
2096 | ||
2097 | /* Terminate name. */ | |
2098 | save_c = *e; | |
2099 | *e = '\0'; | |
2100 | ||
2101 | /* Look for a register symbol. */ | |
2102 | if ((symbolP = symbol_find (*s)) && S_GET_SEGMENT (symbolP) == reg_section) | |
2103 | { | |
2104 | int r = S_GET_VALUE (symbolP); | |
2105 | if (r & types) | |
2106 | reg = r & RNUM_MASK; | |
2107 | else if ((types & RTYPE_VEC) && (r & ~1) == (RTYPE_GP | 2)) | |
2108 | /* Convert GP reg $v0/1 to MDMX reg $v0/1! */ | |
2109 | reg = (r & RNUM_MASK) - 2; | |
2110 | } | |
2111 | /* Else see if this is a register defined in an itbl entry. */ | |
2112 | else if ((types & RTYPE_GP) && itbl_have_entries) | |
2113 | { | |
2114 | char *n = *s; | |
2115 | unsigned long r; | |
2116 | ||
2117 | if (*n == '$') | |
2118 | ++n; | |
2119 | if (itbl_get_reg_val (n, &r)) | |
2120 | reg = r & RNUM_MASK; | |
2121 | } | |
2122 | ||
2123 | /* Advance to next token if a register was recognised. */ | |
2124 | if (reg >= 0) | |
2125 | *s = e; | |
2126 | else if (types & RWARN) | |
20203fb9 | 2127 | as_warn (_("Unrecognized register name `%s'"), *s); |
707bfff6 TS |
2128 | |
2129 | *e = save_c; | |
2130 | if (regnop) | |
2131 | *regnop = reg; | |
2132 | return reg >= 0; | |
2133 | } | |
2134 | ||
df58fc94 RS |
2135 | /* Check if S points at a valid register list according to TYPES. |
2136 | If so, then return 1, advance S to consume the list and store | |
2137 | the registers present on the list as a bitmask of ones in REGLISTP, | |
2138 | otherwise return 0. A valid list comprises a comma-separated | |
2139 | enumeration of valid single registers and/or dash-separated | |
2140 | contiguous register ranges as determined by their numbers. | |
2141 | ||
2142 | As a special exception if one of s0-s7 registers is specified as | |
2143 | the range's lower delimiter and s8 (fp) is its upper one, then no | |
2144 | registers whose numbers place them between s7 and s8 (i.e. $24-$29) | |
2309ddf2 | 2145 | are selected; they have to be listed separately if needed. */ |
df58fc94 RS |
2146 | |
2147 | static int | |
2148 | reglist_lookup (char **s, unsigned int types, unsigned int *reglistp) | |
2149 | { | |
2150 | unsigned int reglist = 0; | |
2151 | unsigned int lastregno; | |
2152 | bfd_boolean ok = TRUE; | |
2153 | unsigned int regmask; | |
2309ddf2 | 2154 | char *s_endlist = *s; |
df58fc94 | 2155 | char *s_reset = *s; |
2309ddf2 | 2156 | unsigned int regno; |
df58fc94 RS |
2157 | |
2158 | while (reg_lookup (s, types, ®no)) | |
2159 | { | |
2160 | lastregno = regno; | |
2161 | if (**s == '-') | |
2162 | { | |
2163 | (*s)++; | |
2164 | ok = reg_lookup (s, types, &lastregno); | |
2165 | if (ok && lastregno < regno) | |
2166 | ok = FALSE; | |
2167 | if (!ok) | |
2168 | break; | |
2169 | } | |
2170 | ||
2171 | if (lastregno == FP && regno >= S0 && regno <= S7) | |
2172 | { | |
2173 | lastregno = S7; | |
2174 | reglist |= 1 << FP; | |
2175 | } | |
2176 | regmask = 1 << lastregno; | |
2177 | regmask = (regmask << 1) - 1; | |
2178 | regmask ^= (1 << regno) - 1; | |
2179 | reglist |= regmask; | |
2180 | ||
2309ddf2 | 2181 | s_endlist = *s; |
df58fc94 RS |
2182 | if (**s != ',') |
2183 | break; | |
2184 | (*s)++; | |
2185 | } | |
2186 | ||
2187 | if (ok) | |
2309ddf2 | 2188 | *s = s_endlist; |
df58fc94 RS |
2189 | else |
2190 | *s = s_reset; | |
2191 | if (reglistp) | |
2192 | *reglistp = reglist; | |
2193 | return ok && reglist != 0; | |
2194 | } | |
2195 | ||
037b32b9 | 2196 | /* Return TRUE if opcode MO is valid on the currently selected ISA and |
f79e2745 | 2197 | architecture. Use is_opcode_valid_16 for MIPS16 opcodes. */ |
037b32b9 AN |
2198 | |
2199 | static bfd_boolean | |
f79e2745 | 2200 | is_opcode_valid (const struct mips_opcode *mo) |
037b32b9 AN |
2201 | { |
2202 | int isa = mips_opts.isa; | |
2203 | int fp_s, fp_d; | |
2204 | ||
2205 | if (mips_opts.ase_mdmx) | |
2206 | isa |= INSN_MDMX; | |
2207 | if (mips_opts.ase_dsp) | |
2208 | isa |= INSN_DSP; | |
2209 | if (mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE) | |
2210 | isa |= INSN_DSP64; | |
2211 | if (mips_opts.ase_dspr2) | |
2212 | isa |= INSN_DSPR2; | |
2213 | if (mips_opts.ase_mt) | |
2214 | isa |= INSN_MT; | |
2215 | if (mips_opts.ase_mips3d) | |
2216 | isa |= INSN_MIPS3D; | |
2217 | if (mips_opts.ase_smartmips) | |
2218 | isa |= INSN_SMARTMIPS; | |
dec0624d MR |
2219 | if (mips_opts.ase_mcu) |
2220 | isa |= INSN_MCU; | |
037b32b9 | 2221 | |
b19e8a9b AN |
2222 | /* Don't accept instructions based on the ISA if the CPU does not implement |
2223 | all the coprocessor insns. */ | |
2224 | if (NO_ISA_COP (mips_opts.arch) | |
2225 | && COP_INSN (mo->pinfo)) | |
2226 | isa = 0; | |
2227 | ||
037b32b9 AN |
2228 | if (!OPCODE_IS_MEMBER (mo, isa, mips_opts.arch)) |
2229 | return FALSE; | |
2230 | ||
2231 | /* Check whether the instruction or macro requires single-precision or | |
2232 | double-precision floating-point support. Note that this information is | |
2233 | stored differently in the opcode table for insns and macros. */ | |
2234 | if (mo->pinfo == INSN_MACRO) | |
2235 | { | |
2236 | fp_s = mo->pinfo2 & INSN2_M_FP_S; | |
2237 | fp_d = mo->pinfo2 & INSN2_M_FP_D; | |
2238 | } | |
2239 | else | |
2240 | { | |
2241 | fp_s = mo->pinfo & FP_S; | |
2242 | fp_d = mo->pinfo & FP_D; | |
2243 | } | |
2244 | ||
2245 | if (fp_d && (mips_opts.soft_float || mips_opts.single_float)) | |
2246 | return FALSE; | |
2247 | ||
2248 | if (fp_s && mips_opts.soft_float) | |
2249 | return FALSE; | |
2250 | ||
2251 | return TRUE; | |
2252 | } | |
2253 | ||
2254 | /* Return TRUE if the MIPS16 opcode MO is valid on the currently | |
2255 | selected ISA and architecture. */ | |
2256 | ||
2257 | static bfd_boolean | |
2258 | is_opcode_valid_16 (const struct mips_opcode *mo) | |
2259 | { | |
2260 | return OPCODE_IS_MEMBER (mo, mips_opts.isa, mips_opts.arch) ? TRUE : FALSE; | |
2261 | } | |
2262 | ||
df58fc94 RS |
2263 | /* Return TRUE if the size of the microMIPS opcode MO matches one |
2264 | explicitly requested. Always TRUE in the standard MIPS mode. */ | |
2265 | ||
2266 | static bfd_boolean | |
2267 | is_size_valid (const struct mips_opcode *mo) | |
2268 | { | |
2269 | if (!mips_opts.micromips) | |
2270 | return TRUE; | |
2271 | ||
2272 | if (!forced_insn_length) | |
2273 | return TRUE; | |
2274 | if (mo->pinfo == INSN_MACRO) | |
2275 | return FALSE; | |
2276 | return forced_insn_length == micromips_insn_length (mo); | |
2277 | } | |
2278 | ||
2279 | /* Return TRUE if the microMIPS opcode MO is valid for the delay slot | |
2280 | of the preceding instruction. Always TRUE in the standard MIPS mode. */ | |
2281 | ||
2282 | static bfd_boolean | |
2283 | is_delay_slot_valid (const struct mips_opcode *mo) | |
2284 | { | |
2285 | if (!mips_opts.micromips) | |
2286 | return TRUE; | |
2287 | ||
2288 | if (mo->pinfo == INSN_MACRO) | |
2289 | return TRUE; | |
2290 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 | |
2291 | && micromips_insn_length (mo) != 4) | |
2292 | return FALSE; | |
2293 | if ((history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
2294 | && micromips_insn_length (mo) != 2) | |
2295 | return FALSE; | |
2296 | ||
2297 | return TRUE; | |
2298 | } | |
2299 | ||
707bfff6 TS |
2300 | /* This function is called once, at assembler startup time. It should set up |
2301 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 2302 | |
252b5132 | 2303 | void |
17a2f251 | 2304 | md_begin (void) |
252b5132 | 2305 | { |
3994f87e | 2306 | const char *retval = NULL; |
156c2f8b | 2307 | int i = 0; |
252b5132 | 2308 | int broken = 0; |
1f25f5d3 | 2309 | |
0a44bf69 RS |
2310 | if (mips_pic != NO_PIC) |
2311 | { | |
2312 | if (g_switch_seen && g_switch_value != 0) | |
2313 | as_bad (_("-G may not be used in position-independent code")); | |
2314 | g_switch_value = 0; | |
2315 | } | |
2316 | ||
fef14a42 | 2317 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch)) |
252b5132 RH |
2318 | as_warn (_("Could not set architecture and machine")); |
2319 | ||
252b5132 RH |
2320 | op_hash = hash_new (); |
2321 | ||
2322 | for (i = 0; i < NUMOPCODES;) | |
2323 | { | |
2324 | const char *name = mips_opcodes[i].name; | |
2325 | ||
17a2f251 | 2326 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
2327 | if (retval != NULL) |
2328 | { | |
2329 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
2330 | mips_opcodes[i].name, retval); | |
2331 | /* Probably a memory allocation problem? Give up now. */ | |
2332 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
2333 | } | |
2334 | do | |
2335 | { | |
2336 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
2337 | { | |
2338 | if (!validate_mips_insn (&mips_opcodes[i])) | |
2339 | broken = 1; | |
1e915849 RS |
2340 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
2341 | { | |
2342 | create_insn (&nop_insn, mips_opcodes + i); | |
c67a084a NC |
2343 | if (mips_fix_loongson2f_nop) |
2344 | nop_insn.insn_opcode = LOONGSON2F_NOP_INSN; | |
1e915849 RS |
2345 | nop_insn.fixed_p = 1; |
2346 | } | |
252b5132 RH |
2347 | } |
2348 | ++i; | |
2349 | } | |
2350 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
2351 | } | |
2352 | ||
2353 | mips16_op_hash = hash_new (); | |
2354 | ||
2355 | i = 0; | |
2356 | while (i < bfd_mips16_num_opcodes) | |
2357 | { | |
2358 | const char *name = mips16_opcodes[i].name; | |
2359 | ||
17a2f251 | 2360 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
2361 | if (retval != NULL) |
2362 | as_fatal (_("internal: can't hash `%s': %s"), | |
2363 | mips16_opcodes[i].name, retval); | |
2364 | do | |
2365 | { | |
2366 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
2367 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
2368 | != mips16_opcodes[i].match)) | |
2369 | { | |
2370 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
2371 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
2372 | broken = 1; | |
2373 | } | |
1e915849 RS |
2374 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
2375 | { | |
2376 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
2377 | mips16_nop_insn.fixed_p = 1; | |
2378 | } | |
252b5132 RH |
2379 | ++i; |
2380 | } | |
2381 | while (i < bfd_mips16_num_opcodes | |
2382 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
2383 | } | |
2384 | ||
df58fc94 RS |
2385 | micromips_op_hash = hash_new (); |
2386 | ||
2387 | i = 0; | |
2388 | while (i < bfd_micromips_num_opcodes) | |
2389 | { | |
2390 | const char *name = micromips_opcodes[i].name; | |
2391 | ||
2392 | retval = hash_insert (micromips_op_hash, name, | |
2393 | (void *) µmips_opcodes[i]); | |
2394 | if (retval != NULL) | |
2395 | as_fatal (_("internal: can't hash `%s': %s"), | |
2396 | micromips_opcodes[i].name, retval); | |
2397 | do | |
2398 | if (micromips_opcodes[i].pinfo != INSN_MACRO) | |
2399 | { | |
2400 | struct mips_cl_insn *micromips_nop_insn; | |
2401 | ||
2402 | if (!validate_micromips_insn (µmips_opcodes[i])) | |
2403 | broken = 1; | |
2404 | ||
2405 | if (micromips_insn_length (micromips_opcodes + i) == 2) | |
2406 | micromips_nop_insn = µmips_nop16_insn; | |
2407 | else if (micromips_insn_length (micromips_opcodes + i) == 4) | |
2408 | micromips_nop_insn = µmips_nop32_insn; | |
2409 | else | |
2410 | continue; | |
2411 | ||
2412 | if (micromips_nop_insn->insn_mo == NULL | |
2413 | && strcmp (name, "nop") == 0) | |
2414 | { | |
2415 | create_insn (micromips_nop_insn, micromips_opcodes + i); | |
2416 | micromips_nop_insn->fixed_p = 1; | |
2417 | } | |
2418 | } | |
2419 | while (++i < bfd_micromips_num_opcodes | |
2420 | && strcmp (micromips_opcodes[i].name, name) == 0); | |
2421 | } | |
2422 | ||
252b5132 RH |
2423 | if (broken) |
2424 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
2425 | ||
2426 | /* We add all the general register names to the symbol table. This | |
2427 | helps us detect invalid uses of them. */ | |
707bfff6 TS |
2428 | for (i = 0; reg_names[i].name; i++) |
2429 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, | |
8fc4ee9b | 2430 | reg_names[i].num, /* & RNUM_MASK, */ |
707bfff6 TS |
2431 | &zero_address_frag)); |
2432 | if (HAVE_NEWABI) | |
2433 | for (i = 0; reg_names_n32n64[i].name; i++) | |
2434 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, | |
8fc4ee9b | 2435 | reg_names_n32n64[i].num, /* & RNUM_MASK, */ |
252b5132 | 2436 | &zero_address_frag)); |
707bfff6 TS |
2437 | else |
2438 | for (i = 0; reg_names_o32[i].name; i++) | |
2439 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, | |
8fc4ee9b | 2440 | reg_names_o32[i].num, /* & RNUM_MASK, */ |
6047c971 | 2441 | &zero_address_frag)); |
6047c971 | 2442 | |
7d10b47d | 2443 | mips_no_prev_insn (); |
252b5132 RH |
2444 | |
2445 | mips_gprmask = 0; | |
2446 | mips_cprmask[0] = 0; | |
2447 | mips_cprmask[1] = 0; | |
2448 | mips_cprmask[2] = 0; | |
2449 | mips_cprmask[3] = 0; | |
2450 | ||
2451 | /* set the default alignment for the text section (2**2) */ | |
2452 | record_alignment (text_section, 2); | |
2453 | ||
4d0d148d | 2454 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 2455 | |
707bfff6 | 2456 | #ifdef OBJ_ELF |
f43abd2b | 2457 | if (IS_ELF) |
252b5132 | 2458 | { |
0a44bf69 RS |
2459 | /* On a native system other than VxWorks, sections must be aligned |
2460 | to 16 byte boundaries. When configured for an embedded ELF | |
2461 | target, we don't bother. */ | |
c41e87e3 CF |
2462 | if (strncmp (TARGET_OS, "elf", 3) != 0 |
2463 | && strncmp (TARGET_OS, "vxworks", 7) != 0) | |
252b5132 RH |
2464 | { |
2465 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
2466 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
2467 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
2468 | } | |
2469 | ||
2470 | /* Create a .reginfo section for register masks and a .mdebug | |
2471 | section for debugging information. */ | |
2472 | { | |
2473 | segT seg; | |
2474 | subsegT subseg; | |
2475 | flagword flags; | |
2476 | segT sec; | |
2477 | ||
2478 | seg = now_seg; | |
2479 | subseg = now_subseg; | |
2480 | ||
2481 | /* The ABI says this section should be loaded so that the | |
2482 | running program can access it. However, we don't load it | |
2483 | if we are configured for an embedded target */ | |
2484 | flags = SEC_READONLY | SEC_DATA; | |
c41e87e3 | 2485 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
2486 | flags |= SEC_ALLOC | SEC_LOAD; |
2487 | ||
316f5878 | 2488 | if (mips_abi != N64_ABI) |
252b5132 RH |
2489 | { |
2490 | sec = subseg_new (".reginfo", (subsegT) 0); | |
2491 | ||
195325d2 TS |
2492 | bfd_set_section_flags (stdoutput, sec, flags); |
2493 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 2494 | |
252b5132 | 2495 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
252b5132 RH |
2496 | } |
2497 | else | |
2498 | { | |
2499 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
2500 | .reginfo section. */ | |
2501 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
2502 | bfd_set_section_flags (stdoutput, sec, flags); |
2503 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 2504 | |
252b5132 RH |
2505 | /* Set up the option header. */ |
2506 | { | |
2507 | Elf_Internal_Options opthdr; | |
2508 | char *f; | |
2509 | ||
2510 | opthdr.kind = ODK_REGINFO; | |
2511 | opthdr.size = (sizeof (Elf_External_Options) | |
2512 | + sizeof (Elf64_External_RegInfo)); | |
2513 | opthdr.section = 0; | |
2514 | opthdr.info = 0; | |
2515 | f = frag_more (sizeof (Elf_External_Options)); | |
2516 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
2517 | (Elf_External_Options *) f); | |
2518 | ||
2519 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
2520 | } | |
252b5132 RH |
2521 | } |
2522 | ||
2523 | if (ECOFF_DEBUGGING) | |
2524 | { | |
2525 | sec = subseg_new (".mdebug", (subsegT) 0); | |
2526 | (void) bfd_set_section_flags (stdoutput, sec, | |
2527 | SEC_HAS_CONTENTS | SEC_READONLY); | |
2528 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
2529 | } | |
f43abd2b | 2530 | else if (mips_flag_pdr) |
ecb4347a DJ |
2531 | { |
2532 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
2533 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
2534 | SEC_READONLY | SEC_RELOC | |
2535 | | SEC_DEBUGGING); | |
2536 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
2537 | } | |
252b5132 RH |
2538 | |
2539 | subseg_set (seg, subseg); | |
2540 | } | |
2541 | } | |
707bfff6 | 2542 | #endif /* OBJ_ELF */ |
252b5132 RH |
2543 | |
2544 | if (! ECOFF_DEBUGGING) | |
2545 | md_obj_begin (); | |
71400594 RS |
2546 | |
2547 | if (mips_fix_vr4120) | |
2548 | init_vr4120_conflicts (); | |
252b5132 RH |
2549 | } |
2550 | ||
2551 | void | |
17a2f251 | 2552 | md_mips_end (void) |
252b5132 | 2553 | { |
02b1ab82 | 2554 | mips_emit_delays (); |
252b5132 RH |
2555 | if (! ECOFF_DEBUGGING) |
2556 | md_obj_end (); | |
2557 | } | |
2558 | ||
2559 | void | |
17a2f251 | 2560 | md_assemble (char *str) |
252b5132 RH |
2561 | { |
2562 | struct mips_cl_insn insn; | |
f6688943 TS |
2563 | bfd_reloc_code_real_type unused_reloc[3] |
2564 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
2565 | |
2566 | imm_expr.X_op = O_absent; | |
5f74bc13 | 2567 | imm2_expr.X_op = O_absent; |
252b5132 | 2568 | offset_expr.X_op = O_absent; |
f6688943 TS |
2569 | imm_reloc[0] = BFD_RELOC_UNUSED; |
2570 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
2571 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
2572 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
2573 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
2574 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2575 | |
2576 | if (mips_opts.mips16) | |
2577 | mips16_ip (str, &insn); | |
2578 | else | |
2579 | { | |
2580 | mips_ip (str, &insn); | |
beae10d5 KH |
2581 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
2582 | str, insn.insn_opcode)); | |
252b5132 RH |
2583 | } |
2584 | ||
2585 | if (insn_error) | |
2586 | { | |
2587 | as_bad ("%s `%s'", insn_error, str); | |
2588 | return; | |
2589 | } | |
2590 | ||
2591 | if (insn.insn_mo->pinfo == INSN_MACRO) | |
2592 | { | |
584892a6 | 2593 | macro_start (); |
252b5132 RH |
2594 | if (mips_opts.mips16) |
2595 | mips16_macro (&insn); | |
2596 | else | |
2597 | macro (&insn); | |
584892a6 | 2598 | macro_end (); |
252b5132 RH |
2599 | } |
2600 | else | |
2601 | { | |
2602 | if (imm_expr.X_op != O_absent) | |
df58fc94 | 2603 | append_insn (&insn, &imm_expr, imm_reloc, FALSE); |
252b5132 | 2604 | else if (offset_expr.X_op != O_absent) |
df58fc94 | 2605 | append_insn (&insn, &offset_expr, offset_reloc, FALSE); |
252b5132 | 2606 | else |
df58fc94 | 2607 | append_insn (&insn, NULL, unused_reloc, FALSE); |
252b5132 RH |
2608 | } |
2609 | } | |
2610 | ||
738e5348 RS |
2611 | /* Convenience functions for abstracting away the differences between |
2612 | MIPS16 and non-MIPS16 relocations. */ | |
2613 | ||
2614 | static inline bfd_boolean | |
2615 | mips16_reloc_p (bfd_reloc_code_real_type reloc) | |
2616 | { | |
2617 | switch (reloc) | |
2618 | { | |
2619 | case BFD_RELOC_MIPS16_JMP: | |
2620 | case BFD_RELOC_MIPS16_GPREL: | |
2621 | case BFD_RELOC_MIPS16_GOT16: | |
2622 | case BFD_RELOC_MIPS16_CALL16: | |
2623 | case BFD_RELOC_MIPS16_HI16_S: | |
2624 | case BFD_RELOC_MIPS16_HI16: | |
2625 | case BFD_RELOC_MIPS16_LO16: | |
2626 | return TRUE; | |
2627 | ||
2628 | default: | |
2629 | return FALSE; | |
2630 | } | |
2631 | } | |
2632 | ||
df58fc94 RS |
2633 | static inline bfd_boolean |
2634 | micromips_reloc_p (bfd_reloc_code_real_type reloc) | |
2635 | { | |
2636 | switch (reloc) | |
2637 | { | |
2638 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: | |
2639 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
2640 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
2641 | case BFD_RELOC_MICROMIPS_GPREL16: | |
2642 | case BFD_RELOC_MICROMIPS_JMP: | |
2643 | case BFD_RELOC_MICROMIPS_HI16: | |
2644 | case BFD_RELOC_MICROMIPS_HI16_S: | |
2645 | case BFD_RELOC_MICROMIPS_LO16: | |
2646 | case BFD_RELOC_MICROMIPS_LITERAL: | |
2647 | case BFD_RELOC_MICROMIPS_GOT16: | |
2648 | case BFD_RELOC_MICROMIPS_CALL16: | |
2649 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
2650 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
2651 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
2652 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
2653 | case BFD_RELOC_MICROMIPS_SUB: | |
2654 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
2655 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
2656 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
2657 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
2658 | case BFD_RELOC_MICROMIPS_HIGHER: | |
2659 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
2660 | case BFD_RELOC_MICROMIPS_JALR: | |
2661 | return TRUE; | |
2662 | ||
2663 | default: | |
2664 | return FALSE; | |
2665 | } | |
2666 | } | |
2667 | ||
2309ddf2 MR |
2668 | static inline bfd_boolean |
2669 | jmp_reloc_p (bfd_reloc_code_real_type reloc) | |
2670 | { | |
2671 | return reloc == BFD_RELOC_MIPS_JMP || reloc == BFD_RELOC_MICROMIPS_JMP; | |
2672 | } | |
2673 | ||
738e5348 RS |
2674 | static inline bfd_boolean |
2675 | got16_reloc_p (bfd_reloc_code_real_type reloc) | |
2676 | { | |
2309ddf2 | 2677 | return (reloc == BFD_RELOC_MIPS_GOT16 || reloc == BFD_RELOC_MIPS16_GOT16 |
df58fc94 | 2678 | || reloc == BFD_RELOC_MICROMIPS_GOT16); |
738e5348 RS |
2679 | } |
2680 | ||
2681 | static inline bfd_boolean | |
2682 | hi16_reloc_p (bfd_reloc_code_real_type reloc) | |
2683 | { | |
2309ddf2 | 2684 | return (reloc == BFD_RELOC_HI16_S || reloc == BFD_RELOC_MIPS16_HI16_S |
df58fc94 | 2685 | || reloc == BFD_RELOC_MICROMIPS_HI16_S); |
738e5348 RS |
2686 | } |
2687 | ||
2688 | static inline bfd_boolean | |
2689 | lo16_reloc_p (bfd_reloc_code_real_type reloc) | |
2690 | { | |
2309ddf2 | 2691 | return (reloc == BFD_RELOC_LO16 || reloc == BFD_RELOC_MIPS16_LO16 |
df58fc94 RS |
2692 | || reloc == BFD_RELOC_MICROMIPS_LO16); |
2693 | } | |
2694 | ||
df58fc94 RS |
2695 | static inline bfd_boolean |
2696 | jalr_reloc_p (bfd_reloc_code_real_type reloc) | |
2697 | { | |
2309ddf2 | 2698 | return reloc == BFD_RELOC_MIPS_JALR || reloc == BFD_RELOC_MICROMIPS_JALR; |
738e5348 RS |
2699 | } |
2700 | ||
5919d012 | 2701 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
2702 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
2703 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
2704 | |
2705 | static inline bfd_boolean | |
17a2f251 | 2706 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 2707 | { |
3b91255e | 2708 | return (HAVE_IN_PLACE_ADDENDS |
738e5348 | 2709 | && (hi16_reloc_p (reloc) |
0a44bf69 RS |
2710 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); |
2711 | all GOT16 relocations evaluate to "G". */ | |
738e5348 RS |
2712 | || (got16_reloc_p (reloc) && mips_pic != VXWORKS_PIC))); |
2713 | } | |
2714 | ||
2715 | /* Return the type of %lo() reloc needed by RELOC, given that | |
2716 | reloc_needs_lo_p. */ | |
2717 | ||
2718 | static inline bfd_reloc_code_real_type | |
2719 | matching_lo_reloc (bfd_reloc_code_real_type reloc) | |
2720 | { | |
df58fc94 RS |
2721 | return (mips16_reloc_p (reloc) ? BFD_RELOC_MIPS16_LO16 |
2722 | : (micromips_reloc_p (reloc) ? BFD_RELOC_MICROMIPS_LO16 | |
2723 | : BFD_RELOC_LO16)); | |
5919d012 RS |
2724 | } |
2725 | ||
2726 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
2727 | relocation. */ | |
2728 | ||
2729 | static inline bfd_boolean | |
17a2f251 | 2730 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
2731 | { |
2732 | return (fixp->fx_next != NULL | |
738e5348 | 2733 | && fixp->fx_next->fx_r_type == matching_lo_reloc (fixp->fx_r_type) |
5919d012 RS |
2734 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
2735 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
2736 | } | |
2737 | ||
252b5132 RH |
2738 | /* This function returns true if modifying a register requires a |
2739 | delay. */ | |
2740 | ||
2741 | static int | |
17a2f251 | 2742 | reg_needs_delay (unsigned int reg) |
252b5132 RH |
2743 | { |
2744 | unsigned long prev_pinfo; | |
2745 | ||
47e39b9d | 2746 | prev_pinfo = history[0].insn_mo->pinfo; |
252b5132 | 2747 | if (! mips_opts.noreorder |
81912461 ILT |
2748 | && (((prev_pinfo & INSN_LOAD_MEMORY_DELAY) |
2749 | && ! gpr_interlocks) | |
2750 | || ((prev_pinfo & INSN_LOAD_COPROC_DELAY) | |
2751 | && ! cop_interlocks))) | |
252b5132 | 2752 | { |
81912461 ILT |
2753 | /* A load from a coprocessor or from memory. All load delays |
2754 | delay the use of general register rt for one instruction. */ | |
bdaaa2e1 | 2755 | /* Itbl support may require additional care here. */ |
252b5132 | 2756 | know (prev_pinfo & INSN_WRITE_GPR_T); |
df58fc94 | 2757 | if (reg == EXTRACT_OPERAND (mips_opts.micromips, RT, history[0])) |
252b5132 RH |
2758 | return 1; |
2759 | } | |
2760 | ||
2761 | return 0; | |
2762 | } | |
2763 | ||
462427c4 RS |
2764 | /* Move all labels in LABELS to the current insertion point. TEXT_P |
2765 | says whether the labels refer to text or data. */ | |
404a8071 RS |
2766 | |
2767 | static void | |
462427c4 | 2768 | mips_move_labels (struct insn_label_list *labels, bfd_boolean text_p) |
404a8071 RS |
2769 | { |
2770 | struct insn_label_list *l; | |
2771 | valueT val; | |
2772 | ||
462427c4 | 2773 | for (l = labels; l != NULL; l = l->next) |
404a8071 | 2774 | { |
9c2799c2 | 2775 | gas_assert (S_GET_SEGMENT (l->label) == now_seg); |
404a8071 RS |
2776 | symbol_set_frag (l->label, frag_now); |
2777 | val = (valueT) frag_now_fix (); | |
df58fc94 | 2778 | /* MIPS16/microMIPS text labels are stored as odd. */ |
462427c4 | 2779 | if (text_p && HAVE_CODE_COMPRESSION) |
404a8071 RS |
2780 | ++val; |
2781 | S_SET_VALUE (l->label, val); | |
2782 | } | |
2783 | } | |
2784 | ||
462427c4 RS |
2785 | /* Move all labels in insn_labels to the current insertion point |
2786 | and treat them as text labels. */ | |
2787 | ||
2788 | static void | |
2789 | mips_move_text_labels (void) | |
2790 | { | |
2791 | mips_move_labels (seg_info (now_seg)->label_list, TRUE); | |
2792 | } | |
2793 | ||
5f0fe04b TS |
2794 | static bfd_boolean |
2795 | s_is_linkonce (symbolS *sym, segT from_seg) | |
2796 | { | |
2797 | bfd_boolean linkonce = FALSE; | |
2798 | segT symseg = S_GET_SEGMENT (sym); | |
2799 | ||
2800 | if (symseg != from_seg && !S_IS_LOCAL (sym)) | |
2801 | { | |
2802 | if ((bfd_get_section_flags (stdoutput, symseg) & SEC_LINK_ONCE)) | |
2803 | linkonce = TRUE; | |
2804 | #ifdef OBJ_ELF | |
2805 | /* The GNU toolchain uses an extension for ELF: a section | |
2806 | beginning with the magic string .gnu.linkonce is a | |
2807 | linkonce section. */ | |
2808 | if (strncmp (segment_name (symseg), ".gnu.linkonce", | |
2809 | sizeof ".gnu.linkonce" - 1) == 0) | |
2810 | linkonce = TRUE; | |
2811 | #endif | |
2812 | } | |
2813 | return linkonce; | |
2814 | } | |
2815 | ||
df58fc94 RS |
2816 | /* Mark instruction labels in MIPS16/microMIPS mode. This permits the |
2817 | linker to handle them specially, such as generating jalx instructions | |
2818 | when needed. We also make them odd for the duration of the assembly, | |
2819 | in order to generate the right sort of code. We will make them even | |
252b5132 RH |
2820 | in the adjust_symtab routine, while leaving them marked. This is |
2821 | convenient for the debugger and the disassembler. The linker knows | |
2822 | to make them odd again. */ | |
2823 | ||
2824 | static void | |
df58fc94 | 2825 | mips_compressed_mark_labels (void) |
252b5132 | 2826 | { |
a8dbcb85 TS |
2827 | segment_info_type *si = seg_info (now_seg); |
2828 | struct insn_label_list *l; | |
252b5132 | 2829 | |
df58fc94 | 2830 | gas_assert (HAVE_CODE_COMPRESSION); |
a8dbcb85 TS |
2831 | |
2832 | for (l = si->label_list; l != NULL; l = l->next) | |
2833 | { | |
2834 | symbolS *label = l->label; | |
2835 | ||
2836 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
f43abd2b | 2837 | if (IS_ELF) |
df58fc94 RS |
2838 | { |
2839 | if (mips_opts.mips16) | |
2840 | S_SET_OTHER (label, ELF_ST_SET_MIPS16 (S_GET_OTHER (label))); | |
2841 | else | |
2842 | S_SET_OTHER (label, ELF_ST_SET_MICROMIPS (S_GET_OTHER (label))); | |
2843 | } | |
252b5132 | 2844 | #endif |
5f0fe04b TS |
2845 | if ((S_GET_VALUE (label) & 1) == 0 |
2846 | /* Don't adjust the address if the label is global or weak, or | |
2847 | in a link-once section, since we'll be emitting symbol reloc | |
2848 | references to it which will be patched up by the linker, and | |
df58fc94 | 2849 | the final value of the symbol may or may not be MIPS16/microMIPS. */ |
5f0fe04b TS |
2850 | && ! S_IS_WEAK (label) |
2851 | && ! S_IS_EXTERNAL (label) | |
2852 | && ! s_is_linkonce (label, now_seg)) | |
a8dbcb85 | 2853 | S_SET_VALUE (label, S_GET_VALUE (label) | 1); |
252b5132 RH |
2854 | } |
2855 | } | |
2856 | ||
4d7206a2 RS |
2857 | /* End the current frag. Make it a variant frag and record the |
2858 | relaxation info. */ | |
2859 | ||
2860 | static void | |
2861 | relax_close_frag (void) | |
2862 | { | |
584892a6 | 2863 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 2864 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 2865 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
2866 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
2867 | ||
2868 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
2869 | mips_relax.first_fixup = 0; | |
2870 | } | |
2871 | ||
2872 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
2873 | See the comment above RELAX_ENCODE for more details. */ | |
2874 | ||
2875 | static void | |
2876 | relax_start (symbolS *symbol) | |
2877 | { | |
9c2799c2 | 2878 | gas_assert (mips_relax.sequence == 0); |
4d7206a2 RS |
2879 | mips_relax.sequence = 1; |
2880 | mips_relax.symbol = symbol; | |
2881 | } | |
2882 | ||
2883 | /* Start generating the second version of a relaxable sequence. | |
2884 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
2885 | |
2886 | static void | |
4d7206a2 RS |
2887 | relax_switch (void) |
2888 | { | |
9c2799c2 | 2889 | gas_assert (mips_relax.sequence == 1); |
4d7206a2 RS |
2890 | mips_relax.sequence = 2; |
2891 | } | |
2892 | ||
2893 | /* End the current relaxable sequence. */ | |
2894 | ||
2895 | static void | |
2896 | relax_end (void) | |
2897 | { | |
9c2799c2 | 2898 | gas_assert (mips_relax.sequence == 2); |
4d7206a2 RS |
2899 | relax_close_frag (); |
2900 | mips_relax.sequence = 0; | |
2901 | } | |
2902 | ||
11625dd8 RS |
2903 | /* Return true if IP is a delayed branch or jump. */ |
2904 | ||
2905 | static inline bfd_boolean | |
2906 | delayed_branch_p (const struct mips_cl_insn *ip) | |
2907 | { | |
2908 | return (ip->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY | |
2909 | | INSN_COND_BRANCH_DELAY | |
2910 | | INSN_COND_BRANCH_LIKELY)) != 0; | |
2911 | } | |
2912 | ||
2913 | /* Return true if IP is a compact branch or jump. */ | |
2914 | ||
2915 | static inline bfd_boolean | |
2916 | compact_branch_p (const struct mips_cl_insn *ip) | |
2917 | { | |
2918 | if (mips_opts.mips16) | |
2919 | return (ip->insn_mo->pinfo & (MIPS16_INSN_UNCOND_BRANCH | |
2920 | | MIPS16_INSN_COND_BRANCH)) != 0; | |
2921 | else | |
2922 | return (ip->insn_mo->pinfo2 & (INSN2_UNCOND_BRANCH | |
2923 | | INSN2_COND_BRANCH)) != 0; | |
2924 | } | |
2925 | ||
2926 | /* Return true if IP is an unconditional branch or jump. */ | |
2927 | ||
2928 | static inline bfd_boolean | |
2929 | uncond_branch_p (const struct mips_cl_insn *ip) | |
2930 | { | |
2931 | return ((ip->insn_mo->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0 | |
2932 | || (mips_opts.mips16 | |
2933 | ? (ip->insn_mo->pinfo & MIPS16_INSN_UNCOND_BRANCH) != 0 | |
2934 | : (ip->insn_mo->pinfo2 & INSN2_UNCOND_BRANCH) != 0)); | |
2935 | } | |
2936 | ||
2937 | /* Return true if IP is a branch-likely instruction. */ | |
2938 | ||
2939 | static inline bfd_boolean | |
2940 | branch_likely_p (const struct mips_cl_insn *ip) | |
2941 | { | |
2942 | return (ip->insn_mo->pinfo & INSN_COND_BRANCH_LIKELY) != 0; | |
2943 | } | |
2944 | ||
14fe068b RS |
2945 | /* Return the type of nop that should be used to fill the delay slot |
2946 | of delayed branch IP. */ | |
2947 | ||
2948 | static struct mips_cl_insn * | |
2949 | get_delay_slot_nop (const struct mips_cl_insn *ip) | |
2950 | { | |
2951 | if (mips_opts.micromips | |
2952 | && (ip->insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
2953 | return µmips_nop32_insn; | |
2954 | return NOP_INSN; | |
2955 | } | |
2956 | ||
2309ddf2 | 2957 | /* Return the mask of core registers that IP reads or writes. */ |
df58fc94 RS |
2958 | |
2959 | static unsigned int | |
2960 | gpr_mod_mask (const struct mips_cl_insn *ip) | |
2961 | { | |
2309ddf2 | 2962 | unsigned long pinfo2; |
df58fc94 RS |
2963 | unsigned int mask; |
2964 | ||
2965 | mask = 0; | |
df58fc94 RS |
2966 | pinfo2 = ip->insn_mo->pinfo2; |
2967 | if (mips_opts.micromips) | |
2968 | { | |
df58fc94 RS |
2969 | if (pinfo2 & INSN2_MOD_GPR_MD) |
2970 | mask |= 1 << micromips_to_32_reg_d_map[EXTRACT_OPERAND (1, MD, *ip)]; | |
df58fc94 RS |
2971 | if (pinfo2 & INSN2_MOD_GPR_MF) |
2972 | mask |= 1 << micromips_to_32_reg_f_map[EXTRACT_OPERAND (1, MF, *ip)]; | |
df58fc94 RS |
2973 | if (pinfo2 & INSN2_MOD_SP) |
2974 | mask |= 1 << SP; | |
2975 | } | |
2976 | return mask; | |
2977 | } | |
2978 | ||
4c260379 RS |
2979 | /* Return the mask of core registers that IP reads. */ |
2980 | ||
2981 | static unsigned int | |
2982 | gpr_read_mask (const struct mips_cl_insn *ip) | |
2983 | { | |
2984 | unsigned long pinfo, pinfo2; | |
2985 | unsigned int mask; | |
2986 | ||
df58fc94 | 2987 | mask = gpr_mod_mask (ip); |
4c260379 RS |
2988 | pinfo = ip->insn_mo->pinfo; |
2989 | pinfo2 = ip->insn_mo->pinfo2; | |
2990 | if (mips_opts.mips16) | |
2991 | { | |
2992 | if (pinfo & MIPS16_INSN_READ_X) | |
2993 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)]; | |
2994 | if (pinfo & MIPS16_INSN_READ_Y) | |
2995 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)]; | |
2996 | if (pinfo & MIPS16_INSN_READ_T) | |
2997 | mask |= 1 << TREG; | |
2998 | if (pinfo & MIPS16_INSN_READ_SP) | |
2999 | mask |= 1 << SP; | |
3000 | if (pinfo & MIPS16_INSN_READ_31) | |
3001 | mask |= 1 << RA; | |
3002 | if (pinfo & MIPS16_INSN_READ_Z) | |
3003 | mask |= 1 << (mips16_to_32_reg_map | |
3004 | [MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip)]); | |
3005 | if (pinfo & MIPS16_INSN_READ_GPR_X) | |
3006 | mask |= 1 << MIPS16_EXTRACT_OPERAND (REGR32, *ip); | |
3007 | } | |
3008 | else | |
3009 | { | |
3010 | if (pinfo2 & INSN2_READ_GPR_D) | |
2309ddf2 | 3011 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); |
4c260379 | 3012 | if (pinfo & INSN_READ_GPR_T) |
2309ddf2 | 3013 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
4c260379 | 3014 | if (pinfo & INSN_READ_GPR_S) |
2309ddf2 MR |
3015 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); |
3016 | if (pinfo2 & INSN2_READ_GP) | |
3017 | mask |= 1 << GP; | |
3018 | if (pinfo2 & INSN2_READ_GPR_31) | |
3019 | mask |= 1 << RA; | |
4c260379 | 3020 | if (pinfo2 & INSN2_READ_GPR_Z) |
2309ddf2 | 3021 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RZ, *ip); |
4c260379 | 3022 | } |
2b0c8b40 MR |
3023 | if (mips_opts.micromips) |
3024 | { | |
3025 | if (pinfo2 & INSN2_READ_GPR_MC) | |
3026 | mask |= 1 << micromips_to_32_reg_c_map[EXTRACT_OPERAND (1, MC, *ip)]; | |
3027 | if (pinfo2 & INSN2_READ_GPR_ME) | |
3028 | mask |= 1 << micromips_to_32_reg_e_map[EXTRACT_OPERAND (1, ME, *ip)]; | |
3029 | if (pinfo2 & INSN2_READ_GPR_MG) | |
3030 | mask |= 1 << micromips_to_32_reg_g_map[EXTRACT_OPERAND (1, MG, *ip)]; | |
3031 | if (pinfo2 & INSN2_READ_GPR_MJ) | |
3032 | mask |= 1 << EXTRACT_OPERAND (1, MJ, *ip); | |
3033 | if (pinfo2 & INSN2_READ_GPR_MMN) | |
3034 | { | |
3035 | mask |= 1 << micromips_to_32_reg_m_map[EXTRACT_OPERAND (1, MM, *ip)]; | |
3036 | mask |= 1 << micromips_to_32_reg_n_map[EXTRACT_OPERAND (1, MN, *ip)]; | |
3037 | } | |
3038 | if (pinfo2 & INSN2_READ_GPR_MP) | |
3039 | mask |= 1 << EXTRACT_OPERAND (1, MP, *ip); | |
3040 | if (pinfo2 & INSN2_READ_GPR_MQ) | |
3041 | mask |= 1 << micromips_to_32_reg_q_map[EXTRACT_OPERAND (1, MQ, *ip)]; | |
3042 | } | |
fe35f09f RS |
3043 | /* Don't include register 0. */ |
3044 | return mask & ~1; | |
4c260379 RS |
3045 | } |
3046 | ||
3047 | /* Return the mask of core registers that IP writes. */ | |
3048 | ||
3049 | static unsigned int | |
3050 | gpr_write_mask (const struct mips_cl_insn *ip) | |
3051 | { | |
3052 | unsigned long pinfo, pinfo2; | |
3053 | unsigned int mask; | |
3054 | ||
df58fc94 | 3055 | mask = gpr_mod_mask (ip); |
4c260379 RS |
3056 | pinfo = ip->insn_mo->pinfo; |
3057 | pinfo2 = ip->insn_mo->pinfo2; | |
3058 | if (mips_opts.mips16) | |
3059 | { | |
3060 | if (pinfo & MIPS16_INSN_WRITE_X) | |
3061 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)]; | |
3062 | if (pinfo & MIPS16_INSN_WRITE_Y) | |
3063 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)]; | |
3064 | if (pinfo & MIPS16_INSN_WRITE_Z) | |
3065 | mask |= 1 << mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RZ, *ip)]; | |
3066 | if (pinfo & MIPS16_INSN_WRITE_T) | |
3067 | mask |= 1 << TREG; | |
3068 | if (pinfo & MIPS16_INSN_WRITE_SP) | |
3069 | mask |= 1 << SP; | |
3070 | if (pinfo & MIPS16_INSN_WRITE_31) | |
3071 | mask |= 1 << RA; | |
3072 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
3073 | mask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
3074 | } | |
3075 | else | |
3076 | { | |
3077 | if (pinfo & INSN_WRITE_GPR_D) | |
df58fc94 | 3078 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); |
4c260379 | 3079 | if (pinfo & INSN_WRITE_GPR_T) |
df58fc94 | 3080 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
2b0c8b40 | 3081 | if (pinfo & INSN_WRITE_GPR_S) |
2309ddf2 | 3082 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); |
4c260379 RS |
3083 | if (pinfo & INSN_WRITE_GPR_31) |
3084 | mask |= 1 << RA; | |
3085 | if (pinfo2 & INSN2_WRITE_GPR_Z) | |
df58fc94 | 3086 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, RZ, *ip); |
4c260379 | 3087 | } |
2b0c8b40 MR |
3088 | if (mips_opts.micromips) |
3089 | { | |
3090 | if (pinfo2 & INSN2_WRITE_GPR_MB) | |
3091 | mask |= 1 << micromips_to_32_reg_b_map[EXTRACT_OPERAND (1, MB, *ip)]; | |
3092 | if (pinfo2 & INSN2_WRITE_GPR_MHI) | |
3093 | { | |
3094 | mask |= 1 << micromips_to_32_reg_h_map[EXTRACT_OPERAND (1, MH, *ip)]; | |
3095 | mask |= 1 << micromips_to_32_reg_i_map[EXTRACT_OPERAND (1, MI, *ip)]; | |
3096 | } | |
3097 | if (pinfo2 & INSN2_WRITE_GPR_MJ) | |
3098 | mask |= 1 << EXTRACT_OPERAND (1, MJ, *ip); | |
3099 | if (pinfo2 & INSN2_WRITE_GPR_MP) | |
3100 | mask |= 1 << EXTRACT_OPERAND (1, MP, *ip); | |
3101 | } | |
fe35f09f RS |
3102 | /* Don't include register 0. */ |
3103 | return mask & ~1; | |
4c260379 RS |
3104 | } |
3105 | ||
3106 | /* Return the mask of floating-point registers that IP reads. */ | |
3107 | ||
3108 | static unsigned int | |
3109 | fpr_read_mask (const struct mips_cl_insn *ip) | |
3110 | { | |
3111 | unsigned long pinfo, pinfo2; | |
3112 | unsigned int mask; | |
3113 | ||
3114 | mask = 0; | |
3115 | pinfo = ip->insn_mo->pinfo; | |
3116 | pinfo2 = ip->insn_mo->pinfo2; | |
2309ddf2 | 3117 | if (!mips_opts.mips16) |
df58fc94 RS |
3118 | { |
3119 | if (pinfo2 & INSN2_READ_FPR_D) | |
2309ddf2 | 3120 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FD, *ip); |
4c260379 | 3121 | if (pinfo & INSN_READ_FPR_S) |
df58fc94 | 3122 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FS, *ip); |
4c260379 | 3123 | if (pinfo & INSN_READ_FPR_T) |
df58fc94 | 3124 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FT, *ip); |
4c260379 | 3125 | if (pinfo & INSN_READ_FPR_R) |
df58fc94 | 3126 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FR, *ip); |
4c260379 | 3127 | if (pinfo2 & INSN2_READ_FPR_Z) |
df58fc94 | 3128 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FZ, *ip); |
4c260379 RS |
3129 | } |
3130 | /* Conservatively treat all operands to an FP_D instruction are doubles. | |
3131 | (This is overly pessimistic for things like cvt.d.s.) */ | |
3132 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
3133 | mask |= mask << 1; | |
3134 | return mask; | |
3135 | } | |
3136 | ||
3137 | /* Return the mask of floating-point registers that IP writes. */ | |
3138 | ||
3139 | static unsigned int | |
3140 | fpr_write_mask (const struct mips_cl_insn *ip) | |
3141 | { | |
3142 | unsigned long pinfo, pinfo2; | |
3143 | unsigned int mask; | |
3144 | ||
3145 | mask = 0; | |
3146 | pinfo = ip->insn_mo->pinfo; | |
3147 | pinfo2 = ip->insn_mo->pinfo2; | |
2309ddf2 | 3148 | if (!mips_opts.mips16) |
4c260379 RS |
3149 | { |
3150 | if (pinfo & INSN_WRITE_FPR_D) | |
df58fc94 | 3151 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FD, *ip); |
4c260379 | 3152 | if (pinfo & INSN_WRITE_FPR_S) |
df58fc94 | 3153 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FS, *ip); |
4c260379 | 3154 | if (pinfo & INSN_WRITE_FPR_T) |
df58fc94 | 3155 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FT, *ip); |
4c260379 | 3156 | if (pinfo2 & INSN2_WRITE_FPR_Z) |
df58fc94 | 3157 | mask |= 1 << EXTRACT_OPERAND (mips_opts.micromips, FZ, *ip); |
4c260379 RS |
3158 | } |
3159 | /* Conservatively treat all operands to an FP_D instruction are doubles. | |
3160 | (This is overly pessimistic for things like cvt.s.d.) */ | |
3161 | if (HAVE_32BIT_FPRS && (pinfo & FP_D)) | |
3162 | mask |= mask << 1; | |
3163 | return mask; | |
3164 | } | |
3165 | ||
71400594 RS |
3166 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
3167 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
3168 | by VR4120 errata. */ | |
4d7206a2 | 3169 | |
71400594 RS |
3170 | static unsigned int |
3171 | classify_vr4120_insn (const char *name) | |
252b5132 | 3172 | { |
71400594 RS |
3173 | if (strncmp (name, "macc", 4) == 0) |
3174 | return FIX_VR4120_MACC; | |
3175 | if (strncmp (name, "dmacc", 5) == 0) | |
3176 | return FIX_VR4120_DMACC; | |
3177 | if (strncmp (name, "mult", 4) == 0) | |
3178 | return FIX_VR4120_MULT; | |
3179 | if (strncmp (name, "dmult", 5) == 0) | |
3180 | return FIX_VR4120_DMULT; | |
3181 | if (strstr (name, "div")) | |
3182 | return FIX_VR4120_DIV; | |
3183 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
3184 | return FIX_VR4120_MTHILO; | |
3185 | return NUM_FIX_VR4120_CLASSES; | |
3186 | } | |
252b5132 | 3187 | |
ff239038 CM |
3188 | #define INSN_ERET 0x42000018 |
3189 | #define INSN_DERET 0x4200001f | |
3190 | ||
71400594 RS |
3191 | /* Return the number of instructions that must separate INSN1 and INSN2, |
3192 | where INSN1 is the earlier instruction. Return the worst-case value | |
3193 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 3194 | |
71400594 RS |
3195 | static unsigned int |
3196 | insns_between (const struct mips_cl_insn *insn1, | |
3197 | const struct mips_cl_insn *insn2) | |
3198 | { | |
3199 | unsigned long pinfo1, pinfo2; | |
4c260379 | 3200 | unsigned int mask; |
71400594 RS |
3201 | |
3202 | /* This function needs to know which pinfo flags are set for INSN2 | |
3203 | and which registers INSN2 uses. The former is stored in PINFO2 and | |
4c260379 RS |
3204 | the latter is tested via INSN2_USES_GPR. If INSN2 is null, PINFO2 |
3205 | will have every flag set and INSN2_USES_GPR will always return true. */ | |
71400594 RS |
3206 | pinfo1 = insn1->insn_mo->pinfo; |
3207 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 3208 | |
4c260379 RS |
3209 | #define INSN2_USES_GPR(REG) \ |
3210 | (insn2 == NULL || (gpr_read_mask (insn2) & (1U << (REG))) != 0) | |
71400594 RS |
3211 | |
3212 | /* For most targets, write-after-read dependencies on the HI and LO | |
3213 | registers must be separated by at least two instructions. */ | |
3214 | if (!hilo_interlocks) | |
252b5132 | 3215 | { |
71400594 RS |
3216 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
3217 | return 2; | |
3218 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
3219 | return 2; | |
3220 | } | |
3221 | ||
3222 | /* If we're working around r7000 errata, there must be two instructions | |
3223 | between an mfhi or mflo and any instruction that uses the result. */ | |
3224 | if (mips_7000_hilo_fix | |
df58fc94 | 3225 | && !mips_opts.micromips |
71400594 | 3226 | && MF_HILO_INSN (pinfo1) |
df58fc94 | 3227 | && INSN2_USES_GPR (EXTRACT_OPERAND (0, RD, *insn1))) |
71400594 RS |
3228 | return 2; |
3229 | ||
ff239038 CM |
3230 | /* If we're working around 24K errata, one instruction is required |
3231 | if an ERET or DERET is followed by a branch instruction. */ | |
df58fc94 | 3232 | if (mips_fix_24k && !mips_opts.micromips) |
ff239038 CM |
3233 | { |
3234 | if (insn1->insn_opcode == INSN_ERET | |
3235 | || insn1->insn_opcode == INSN_DERET) | |
3236 | { | |
3237 | if (insn2 == NULL | |
3238 | || insn2->insn_opcode == INSN_ERET | |
3239 | || insn2->insn_opcode == INSN_DERET | |
11625dd8 | 3240 | || delayed_branch_p (insn2)) |
ff239038 CM |
3241 | return 1; |
3242 | } | |
3243 | } | |
3244 | ||
71400594 RS |
3245 | /* If working around VR4120 errata, check for combinations that need |
3246 | a single intervening instruction. */ | |
df58fc94 | 3247 | if (mips_fix_vr4120 && !mips_opts.micromips) |
71400594 RS |
3248 | { |
3249 | unsigned int class1, class2; | |
252b5132 | 3250 | |
71400594 RS |
3251 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
3252 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 3253 | { |
71400594 RS |
3254 | if (insn2 == NULL) |
3255 | return 1; | |
3256 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
3257 | if (vr4120_conflicts[class1] & (1 << class2)) | |
3258 | return 1; | |
252b5132 | 3259 | } |
71400594 RS |
3260 | } |
3261 | ||
df58fc94 | 3262 | if (!HAVE_CODE_COMPRESSION) |
71400594 RS |
3263 | { |
3264 | /* Check for GPR or coprocessor load delays. All such delays | |
3265 | are on the RT register. */ | |
3266 | /* Itbl support may require additional care here. */ | |
3267 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY_DELAY)) | |
3268 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC_DELAY))) | |
252b5132 | 3269 | { |
71400594 | 3270 | know (pinfo1 & INSN_WRITE_GPR_T); |
df58fc94 | 3271 | if (INSN2_USES_GPR (EXTRACT_OPERAND (0, RT, *insn1))) |
71400594 RS |
3272 | return 1; |
3273 | } | |
3274 | ||
3275 | /* Check for generic coprocessor hazards. | |
3276 | ||
3277 | This case is not handled very well. There is no special | |
3278 | knowledge of CP0 handling, and the coprocessors other than | |
3279 | the floating point unit are not distinguished at all. */ | |
3280 | /* Itbl support may require additional care here. FIXME! | |
3281 | Need to modify this to include knowledge about | |
3282 | user specified delays! */ | |
3283 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE_DELAY)) | |
3284 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) | |
3285 | { | |
3286 | /* Handle cases where INSN1 writes to a known general coprocessor | |
3287 | register. There must be a one instruction delay before INSN2 | |
3288 | if INSN2 reads that register, otherwise no delay is needed. */ | |
4c260379 RS |
3289 | mask = fpr_write_mask (insn1); |
3290 | if (mask != 0) | |
252b5132 | 3291 | { |
4c260379 | 3292 | if (!insn2 || (mask & fpr_read_mask (insn2)) != 0) |
71400594 | 3293 | return 1; |
252b5132 RH |
3294 | } |
3295 | else | |
3296 | { | |
71400594 RS |
3297 | /* Read-after-write dependencies on the control registers |
3298 | require a two-instruction gap. */ | |
3299 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
3300 | && (pinfo2 & INSN_READ_COND_CODE)) | |
3301 | return 2; | |
3302 | ||
3303 | /* We don't know exactly what INSN1 does. If INSN2 is | |
3304 | also a coprocessor instruction, assume there must be | |
3305 | a one instruction gap. */ | |
3306 | if (pinfo2 & INSN_COP) | |
3307 | return 1; | |
252b5132 RH |
3308 | } |
3309 | } | |
6b76fefe | 3310 | |
71400594 RS |
3311 | /* Check for read-after-write dependencies on the coprocessor |
3312 | control registers in cases where INSN1 does not need a general | |
3313 | coprocessor delay. This means that INSN1 is a floating point | |
3314 | comparison instruction. */ | |
3315 | /* Itbl support may require additional care here. */ | |
3316 | else if (!cop_interlocks | |
3317 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
3318 | && (pinfo2 & INSN_READ_COND_CODE)) | |
3319 | return 1; | |
3320 | } | |
6b76fefe | 3321 | |
4c260379 | 3322 | #undef INSN2_USES_GPR |
6b76fefe | 3323 | |
71400594 RS |
3324 | return 0; |
3325 | } | |
6b76fefe | 3326 | |
7d8e00cf RS |
3327 | /* Return the number of nops that would be needed to work around the |
3328 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
932d1a1b RS |
3329 | the MAX_VR4130_NOPS instructions described by HIST. Ignore hazards |
3330 | that are contained within the first IGNORE instructions of HIST. */ | |
7d8e00cf RS |
3331 | |
3332 | static int | |
932d1a1b | 3333 | nops_for_vr4130 (int ignore, const struct mips_cl_insn *hist, |
7d8e00cf RS |
3334 | const struct mips_cl_insn *insn) |
3335 | { | |
4c260379 RS |
3336 | int i, j; |
3337 | unsigned int mask; | |
7d8e00cf RS |
3338 | |
3339 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
3340 | are not affected by the errata. */ | |
3341 | if (insn != 0 | |
3342 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
3343 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
3344 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
3345 | return 0; | |
3346 | ||
3347 | /* Search for the first MFLO or MFHI. */ | |
3348 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
91d6fa6a | 3349 | if (MF_HILO_INSN (hist[i].insn_mo->pinfo)) |
7d8e00cf RS |
3350 | { |
3351 | /* Extract the destination register. */ | |
4c260379 | 3352 | mask = gpr_write_mask (&hist[i]); |
7d8e00cf RS |
3353 | |
3354 | /* No nops are needed if INSN reads that register. */ | |
4c260379 | 3355 | if (insn != NULL && (gpr_read_mask (insn) & mask) != 0) |
7d8e00cf RS |
3356 | return 0; |
3357 | ||
3358 | /* ...or if any of the intervening instructions do. */ | |
3359 | for (j = 0; j < i; j++) | |
4c260379 | 3360 | if (gpr_read_mask (&hist[j]) & mask) |
7d8e00cf RS |
3361 | return 0; |
3362 | ||
932d1a1b RS |
3363 | if (i >= ignore) |
3364 | return MAX_VR4130_NOPS - i; | |
7d8e00cf RS |
3365 | } |
3366 | return 0; | |
3367 | } | |
3368 | ||
15be625d CM |
3369 | #define BASE_REG_EQ(INSN1, INSN2) \ |
3370 | ((((INSN1) >> OP_SH_RS) & OP_MASK_RS) \ | |
3371 | == (((INSN2) >> OP_SH_RS) & OP_MASK_RS)) | |
3372 | ||
3373 | /* Return the minimum alignment for this store instruction. */ | |
3374 | ||
3375 | static int | |
3376 | fix_24k_align_to (const struct mips_opcode *mo) | |
3377 | { | |
3378 | if (strcmp (mo->name, "sh") == 0) | |
3379 | return 2; | |
3380 | ||
3381 | if (strcmp (mo->name, "swc1") == 0 | |
3382 | || strcmp (mo->name, "swc2") == 0 | |
3383 | || strcmp (mo->name, "sw") == 0 | |
3384 | || strcmp (mo->name, "sc") == 0 | |
3385 | || strcmp (mo->name, "s.s") == 0) | |
3386 | return 4; | |
3387 | ||
3388 | if (strcmp (mo->name, "sdc1") == 0 | |
3389 | || strcmp (mo->name, "sdc2") == 0 | |
3390 | || strcmp (mo->name, "s.d") == 0) | |
3391 | return 8; | |
3392 | ||
3393 | /* sb, swl, swr */ | |
3394 | return 1; | |
3395 | } | |
3396 | ||
3397 | struct fix_24k_store_info | |
3398 | { | |
3399 | /* Immediate offset, if any, for this store instruction. */ | |
3400 | short off; | |
3401 | /* Alignment required by this store instruction. */ | |
3402 | int align_to; | |
3403 | /* True for register offsets. */ | |
3404 | int register_offset; | |
3405 | }; | |
3406 | ||
3407 | /* Comparison function used by qsort. */ | |
3408 | ||
3409 | static int | |
3410 | fix_24k_sort (const void *a, const void *b) | |
3411 | { | |
3412 | const struct fix_24k_store_info *pos1 = a; | |
3413 | const struct fix_24k_store_info *pos2 = b; | |
3414 | ||
3415 | return (pos1->off - pos2->off); | |
3416 | } | |
3417 | ||
3418 | /* INSN is a store instruction. Try to record the store information | |
3419 | in STINFO. Return false if the information isn't known. */ | |
3420 | ||
3421 | static bfd_boolean | |
3422 | fix_24k_record_store_info (struct fix_24k_store_info *stinfo, | |
ab9794cf | 3423 | const struct mips_cl_insn *insn) |
15be625d CM |
3424 | { |
3425 | /* The instruction must have a known offset. */ | |
3426 | if (!insn->complete_p || !strstr (insn->insn_mo->args, "o(")) | |
3427 | return FALSE; | |
3428 | ||
3429 | stinfo->off = (insn->insn_opcode >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE; | |
3430 | stinfo->align_to = fix_24k_align_to (insn->insn_mo); | |
3431 | return TRUE; | |
3432 | } | |
3433 | ||
932d1a1b RS |
3434 | /* Return the number of nops that would be needed to work around the 24k |
3435 | "lost data on stores during refill" errata if instruction INSN | |
3436 | immediately followed the 2 instructions described by HIST. | |
3437 | Ignore hazards that are contained within the first IGNORE | |
3438 | instructions of HIST. | |
3439 | ||
3440 | Problem: The FSB (fetch store buffer) acts as an intermediate buffer | |
3441 | for the data cache refills and store data. The following describes | |
3442 | the scenario where the store data could be lost. | |
3443 | ||
3444 | * A data cache miss, due to either a load or a store, causing fill | |
3445 | data to be supplied by the memory subsystem | |
3446 | * The first three doublewords of fill data are returned and written | |
3447 | into the cache | |
3448 | * A sequence of four stores occurs in consecutive cycles around the | |
3449 | final doubleword of the fill: | |
3450 | * Store A | |
3451 | * Store B | |
3452 | * Store C | |
3453 | * Zero, One or more instructions | |
3454 | * Store D | |
3455 | ||
3456 | The four stores A-D must be to different doublewords of the line that | |
3457 | is being filled. The fourth instruction in the sequence above permits | |
3458 | the fill of the final doubleword to be transferred from the FSB into | |
3459 | the cache. In the sequence above, the stores may be either integer | |
3460 | (sb, sh, sw, swr, swl, sc) or coprocessor (swc1/swc2, sdc1/sdc2, | |
3461 | swxc1, sdxc1, suxc1) stores, as long as the four stores are to | |
3462 | different doublewords on the line. If the floating point unit is | |
3463 | running in 1:2 mode, it is not possible to create the sequence above | |
3464 | using only floating point store instructions. | |
15be625d CM |
3465 | |
3466 | In this case, the cache line being filled is incorrectly marked | |
3467 | invalid, thereby losing the data from any store to the line that | |
3468 | occurs between the original miss and the completion of the five | |
3469 | cycle sequence shown above. | |
3470 | ||
932d1a1b | 3471 | The workarounds are: |
15be625d | 3472 | |
932d1a1b RS |
3473 | * Run the data cache in write-through mode. |
3474 | * Insert a non-store instruction between | |
3475 | Store A and Store B or Store B and Store C. */ | |
15be625d CM |
3476 | |
3477 | static int | |
932d1a1b | 3478 | nops_for_24k (int ignore, const struct mips_cl_insn *hist, |
15be625d CM |
3479 | const struct mips_cl_insn *insn) |
3480 | { | |
3481 | struct fix_24k_store_info pos[3]; | |
3482 | int align, i, base_offset; | |
3483 | ||
932d1a1b RS |
3484 | if (ignore >= 2) |
3485 | return 0; | |
3486 | ||
ab9794cf RS |
3487 | /* If the previous instruction wasn't a store, there's nothing to |
3488 | worry about. */ | |
15be625d CM |
3489 | if ((hist[0].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) |
3490 | return 0; | |
3491 | ||
ab9794cf RS |
3492 | /* If the instructions after the previous one are unknown, we have |
3493 | to assume the worst. */ | |
3494 | if (!insn) | |
15be625d CM |
3495 | return 1; |
3496 | ||
ab9794cf RS |
3497 | /* Check whether we are dealing with three consecutive stores. */ |
3498 | if ((insn->insn_mo->pinfo & INSN_STORE_MEMORY) == 0 | |
3499 | || (hist[1].insn_mo->pinfo & INSN_STORE_MEMORY) == 0) | |
15be625d CM |
3500 | return 0; |
3501 | ||
3502 | /* If we don't know the relationship between the store addresses, | |
3503 | assume the worst. */ | |
ab9794cf | 3504 | if (!BASE_REG_EQ (insn->insn_opcode, hist[0].insn_opcode) |
15be625d CM |
3505 | || !BASE_REG_EQ (insn->insn_opcode, hist[1].insn_opcode)) |
3506 | return 1; | |
3507 | ||
3508 | if (!fix_24k_record_store_info (&pos[0], insn) | |
3509 | || !fix_24k_record_store_info (&pos[1], &hist[0]) | |
3510 | || !fix_24k_record_store_info (&pos[2], &hist[1])) | |
3511 | return 1; | |
3512 | ||
3513 | qsort (&pos, 3, sizeof (struct fix_24k_store_info), fix_24k_sort); | |
3514 | ||
3515 | /* Pick a value of ALIGN and X such that all offsets are adjusted by | |
3516 | X bytes and such that the base register + X is known to be aligned | |
3517 | to align bytes. */ | |
3518 | ||
3519 | if (((insn->insn_opcode >> OP_SH_RS) & OP_MASK_RS) == SP) | |
3520 | align = 8; | |
3521 | else | |
3522 | { | |
3523 | align = pos[0].align_to; | |
3524 | base_offset = pos[0].off; | |
3525 | for (i = 1; i < 3; i++) | |
3526 | if (align < pos[i].align_to) | |
3527 | { | |
3528 | align = pos[i].align_to; | |
3529 | base_offset = pos[i].off; | |
3530 | } | |
3531 | for (i = 0; i < 3; i++) | |
3532 | pos[i].off -= base_offset; | |
3533 | } | |
3534 | ||
3535 | pos[0].off &= ~align + 1; | |
3536 | pos[1].off &= ~align + 1; | |
3537 | pos[2].off &= ~align + 1; | |
3538 | ||
3539 | /* If any two stores write to the same chunk, they also write to the | |
3540 | same doubleword. The offsets are still sorted at this point. */ | |
3541 | if (pos[0].off == pos[1].off || pos[1].off == pos[2].off) | |
3542 | return 0; | |
3543 | ||
3544 | /* A range of at least 9 bytes is needed for the stores to be in | |
3545 | non-overlapping doublewords. */ | |
3546 | if (pos[2].off - pos[0].off <= 8) | |
3547 | return 0; | |
3548 | ||
3549 | if (pos[2].off - pos[1].off >= 24 | |
3550 | || pos[1].off - pos[0].off >= 24 | |
3551 | || pos[2].off - pos[0].off >= 32) | |
3552 | return 0; | |
3553 | ||
3554 | return 1; | |
3555 | } | |
3556 | ||
71400594 | 3557 | /* Return the number of nops that would be needed if instruction INSN |
91d6fa6a | 3558 | immediately followed the MAX_NOPS instructions given by HIST, |
932d1a1b RS |
3559 | where HIST[0] is the most recent instruction. Ignore hazards |
3560 | between INSN and the first IGNORE instructions in HIST. | |
3561 | ||
3562 | If INSN is null, return the worse-case number of nops for any | |
3563 | instruction. */ | |
bdaaa2e1 | 3564 | |
71400594 | 3565 | static int |
932d1a1b | 3566 | nops_for_insn (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
3567 | const struct mips_cl_insn *insn) |
3568 | { | |
3569 | int i, nops, tmp_nops; | |
bdaaa2e1 | 3570 | |
71400594 | 3571 | nops = 0; |
932d1a1b | 3572 | for (i = ignore; i < MAX_DELAY_NOPS; i++) |
65b02341 | 3573 | { |
91d6fa6a | 3574 | tmp_nops = insns_between (hist + i, insn) - i; |
65b02341 RS |
3575 | if (tmp_nops > nops) |
3576 | nops = tmp_nops; | |
3577 | } | |
7d8e00cf | 3578 | |
df58fc94 | 3579 | if (mips_fix_vr4130 && !mips_opts.micromips) |
7d8e00cf | 3580 | { |
932d1a1b | 3581 | tmp_nops = nops_for_vr4130 (ignore, hist, insn); |
7d8e00cf RS |
3582 | if (tmp_nops > nops) |
3583 | nops = tmp_nops; | |
3584 | } | |
3585 | ||
df58fc94 | 3586 | if (mips_fix_24k && !mips_opts.micromips) |
15be625d | 3587 | { |
932d1a1b | 3588 | tmp_nops = nops_for_24k (ignore, hist, insn); |
15be625d CM |
3589 | if (tmp_nops > nops) |
3590 | nops = tmp_nops; | |
3591 | } | |
3592 | ||
71400594 RS |
3593 | return nops; |
3594 | } | |
252b5132 | 3595 | |
71400594 | 3596 | /* The variable arguments provide NUM_INSNS extra instructions that |
91d6fa6a | 3597 | might be added to HIST. Return the largest number of nops that |
932d1a1b RS |
3598 | would be needed after the extended sequence, ignoring hazards |
3599 | in the first IGNORE instructions. */ | |
252b5132 | 3600 | |
71400594 | 3601 | static int |
932d1a1b RS |
3602 | nops_for_sequence (int num_insns, int ignore, |
3603 | const struct mips_cl_insn *hist, ...) | |
71400594 RS |
3604 | { |
3605 | va_list args; | |
3606 | struct mips_cl_insn buffer[MAX_NOPS]; | |
3607 | struct mips_cl_insn *cursor; | |
3608 | int nops; | |
3609 | ||
91d6fa6a | 3610 | va_start (args, hist); |
71400594 | 3611 | cursor = buffer + num_insns; |
91d6fa6a | 3612 | memcpy (cursor, hist, (MAX_NOPS - num_insns) * sizeof (*cursor)); |
71400594 RS |
3613 | while (cursor > buffer) |
3614 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
3615 | ||
932d1a1b | 3616 | nops = nops_for_insn (ignore, buffer, NULL); |
71400594 RS |
3617 | va_end (args); |
3618 | return nops; | |
3619 | } | |
252b5132 | 3620 | |
71400594 RS |
3621 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
3622 | worst-case delay for the branch target. */ | |
252b5132 | 3623 | |
71400594 | 3624 | static int |
932d1a1b | 3625 | nops_for_insn_or_target (int ignore, const struct mips_cl_insn *hist, |
71400594 RS |
3626 | const struct mips_cl_insn *insn) |
3627 | { | |
3628 | int nops, tmp_nops; | |
60b63b72 | 3629 | |
932d1a1b | 3630 | nops = nops_for_insn (ignore, hist, insn); |
11625dd8 | 3631 | if (delayed_branch_p (insn)) |
71400594 | 3632 | { |
932d1a1b | 3633 | tmp_nops = nops_for_sequence (2, ignore ? ignore + 2 : 0, |
14fe068b | 3634 | hist, insn, get_delay_slot_nop (insn)); |
71400594 RS |
3635 | if (tmp_nops > nops) |
3636 | nops = tmp_nops; | |
3637 | } | |
11625dd8 | 3638 | else if (compact_branch_p (insn)) |
71400594 | 3639 | { |
932d1a1b | 3640 | tmp_nops = nops_for_sequence (1, ignore ? ignore + 1 : 0, hist, insn); |
71400594 RS |
3641 | if (tmp_nops > nops) |
3642 | nops = tmp_nops; | |
3643 | } | |
3644 | return nops; | |
3645 | } | |
3646 | ||
c67a084a NC |
3647 | /* Fix NOP issue: Replace nops by "or at,at,zero". */ |
3648 | ||
3649 | static void | |
3650 | fix_loongson2f_nop (struct mips_cl_insn * ip) | |
3651 | { | |
df58fc94 | 3652 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
3653 | if (strcmp (ip->insn_mo->name, "nop") == 0) |
3654 | ip->insn_opcode = LOONGSON2F_NOP_INSN; | |
3655 | } | |
3656 | ||
3657 | /* Fix Jump Issue: Eliminate instruction fetch from outside 256M region | |
3658 | jr target pc &= 'hffff_ffff_cfff_ffff. */ | |
3659 | ||
3660 | static void | |
3661 | fix_loongson2f_jump (struct mips_cl_insn * ip) | |
3662 | { | |
df58fc94 | 3663 | gas_assert (!HAVE_CODE_COMPRESSION); |
c67a084a NC |
3664 | if (strcmp (ip->insn_mo->name, "j") == 0 |
3665 | || strcmp (ip->insn_mo->name, "jr") == 0 | |
3666 | || strcmp (ip->insn_mo->name, "jalr") == 0) | |
3667 | { | |
3668 | int sreg; | |
3669 | expressionS ep; | |
3670 | ||
3671 | if (! mips_opts.at) | |
3672 | return; | |
3673 | ||
df58fc94 | 3674 | sreg = EXTRACT_OPERAND (0, RS, *ip); |
c67a084a NC |
3675 | if (sreg == ZERO || sreg == KT0 || sreg == KT1 || sreg == ATREG) |
3676 | return; | |
3677 | ||
3678 | ep.X_op = O_constant; | |
3679 | ep.X_add_number = 0xcfff0000; | |
3680 | macro_build (&ep, "lui", "t,u", ATREG, BFD_RELOC_HI16); | |
3681 | ep.X_add_number = 0xffff; | |
3682 | macro_build (&ep, "ori", "t,r,i", ATREG, ATREG, BFD_RELOC_LO16); | |
3683 | macro_build (NULL, "and", "d,v,t", sreg, sreg, ATREG); | |
3684 | } | |
3685 | } | |
3686 | ||
3687 | static void | |
3688 | fix_loongson2f (struct mips_cl_insn * ip) | |
3689 | { | |
3690 | if (mips_fix_loongson2f_nop) | |
3691 | fix_loongson2f_nop (ip); | |
3692 | ||
3693 | if (mips_fix_loongson2f_jump) | |
3694 | fix_loongson2f_jump (ip); | |
3695 | } | |
3696 | ||
a4e06468 RS |
3697 | /* IP is a branch that has a delay slot, and we need to fill it |
3698 | automatically. Return true if we can do that by swapping IP | |
3699 | with the previous instruction. */ | |
3700 | ||
3701 | static bfd_boolean | |
3702 | can_swap_branch_p (struct mips_cl_insn *ip) | |
3703 | { | |
2b0c8b40 | 3704 | unsigned long pinfo, pinfo2, prev_pinfo, prev_pinfo2; |
a4e06468 RS |
3705 | unsigned int gpr_read, gpr_write, prev_gpr_read, prev_gpr_write; |
3706 | ||
3707 | /* -O2 and above is required for this optimization. */ | |
3708 | if (mips_optimize < 2) | |
3709 | return FALSE; | |
3710 | ||
3711 | /* If we have seen .set volatile or .set nomove, don't optimize. */ | |
3712 | if (mips_opts.nomove) | |
3713 | return FALSE; | |
3714 | ||
3715 | /* We can't swap if the previous instruction's position is fixed. */ | |
3716 | if (history[0].fixed_p) | |
3717 | return FALSE; | |
3718 | ||
3719 | /* If the previous previous insn was in a .set noreorder, we can't | |
3720 | swap. Actually, the MIPS assembler will swap in this situation. | |
3721 | However, gcc configured -with-gnu-as will generate code like | |
3722 | ||
3723 | .set noreorder | |
3724 | lw $4,XXX | |
3725 | .set reorder | |
3726 | INSN | |
3727 | bne $4,$0,foo | |
3728 | ||
3729 | in which we can not swap the bne and INSN. If gcc is not configured | |
3730 | -with-gnu-as, it does not output the .set pseudo-ops. */ | |
3731 | if (history[1].noreorder_p) | |
3732 | return FALSE; | |
3733 | ||
87333bb7 MR |
3734 | /* If the previous instruction had a fixup in mips16 mode, we can not swap. |
3735 | This means that the previous instruction was a 4-byte one anyhow. */ | |
a4e06468 RS |
3736 | if (mips_opts.mips16 && history[0].fixp[0]) |
3737 | return FALSE; | |
3738 | ||
3739 | /* If the branch is itself the target of a branch, we can not swap. | |
3740 | We cheat on this; all we check for is whether there is a label on | |
3741 | this instruction. If there are any branches to anything other than | |
3742 | a label, users must use .set noreorder. */ | |
3743 | if (seg_info (now_seg)->label_list) | |
3744 | return FALSE; | |
3745 | ||
3746 | /* If the previous instruction is in a variant frag other than this | |
2309ddf2 | 3747 | branch's one, we cannot do the swap. This does not apply to |
9301f9c3 MR |
3748 | MIPS16 code, which uses variant frags for different purposes. */ |
3749 | if (!mips_opts.mips16 | |
a4e06468 RS |
3750 | && history[0].frag |
3751 | && history[0].frag->fr_type == rs_machine_dependent) | |
3752 | return FALSE; | |
3753 | ||
bcd530a7 RS |
3754 | /* We do not swap with instructions that cannot architecturally |
3755 | be placed in a branch delay slot, such as SYNC or ERET. We | |
3756 | also refrain from swapping with a trap instruction, since it | |
3757 | complicates trap handlers to have the trap instruction be in | |
3758 | a delay slot. */ | |
a4e06468 | 3759 | prev_pinfo = history[0].insn_mo->pinfo; |
bcd530a7 | 3760 | if (prev_pinfo & INSN_NO_DELAY_SLOT) |
a4e06468 RS |
3761 | return FALSE; |
3762 | ||
3763 | /* Check for conflicts between the branch and the instructions | |
3764 | before the candidate delay slot. */ | |
3765 | if (nops_for_insn (0, history + 1, ip) > 0) | |
3766 | return FALSE; | |
3767 | ||
3768 | /* Check for conflicts between the swapped sequence and the | |
3769 | target of the branch. */ | |
3770 | if (nops_for_sequence (2, 0, history + 1, ip, history) > 0) | |
3771 | return FALSE; | |
3772 | ||
3773 | /* If the branch reads a register that the previous | |
3774 | instruction sets, we can not swap. */ | |
3775 | gpr_read = gpr_read_mask (ip); | |
3776 | prev_gpr_write = gpr_write_mask (&history[0]); | |
3777 | if (gpr_read & prev_gpr_write) | |
3778 | return FALSE; | |
3779 | ||
3780 | /* If the branch writes a register that the previous | |
3781 | instruction sets, we can not swap. */ | |
3782 | gpr_write = gpr_write_mask (ip); | |
3783 | if (gpr_write & prev_gpr_write) | |
3784 | return FALSE; | |
3785 | ||
3786 | /* If the branch writes a register that the previous | |
3787 | instruction reads, we can not swap. */ | |
3788 | prev_gpr_read = gpr_read_mask (&history[0]); | |
3789 | if (gpr_write & prev_gpr_read) | |
3790 | return FALSE; | |
3791 | ||
3792 | /* If one instruction sets a condition code and the | |
3793 | other one uses a condition code, we can not swap. */ | |
3794 | pinfo = ip->insn_mo->pinfo; | |
3795 | if ((pinfo & INSN_READ_COND_CODE) | |
3796 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
3797 | return FALSE; | |
3798 | if ((pinfo & INSN_WRITE_COND_CODE) | |
3799 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
3800 | return FALSE; | |
3801 | ||
3802 | /* If the previous instruction uses the PC, we can not swap. */ | |
2b0c8b40 | 3803 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
a4e06468 RS |
3804 | if (mips_opts.mips16 && (prev_pinfo & MIPS16_INSN_READ_PC)) |
3805 | return FALSE; | |
2b0c8b40 MR |
3806 | if (mips_opts.micromips && (prev_pinfo2 & INSN2_READ_PC)) |
3807 | return FALSE; | |
a4e06468 | 3808 | |
df58fc94 RS |
3809 | /* If the previous instruction has an incorrect size for a fixed |
3810 | branch delay slot in microMIPS mode, we cannot swap. */ | |
2309ddf2 MR |
3811 | pinfo2 = ip->insn_mo->pinfo2; |
3812 | if (mips_opts.micromips | |
3813 | && (pinfo2 & INSN2_BRANCH_DELAY_16BIT) | |
3814 | && insn_length (history) != 2) | |
3815 | return FALSE; | |
3816 | if (mips_opts.micromips | |
3817 | && (pinfo2 & INSN2_BRANCH_DELAY_32BIT) | |
3818 | && insn_length (history) != 4) | |
3819 | return FALSE; | |
3820 | ||
a4e06468 RS |
3821 | return TRUE; |
3822 | } | |
3823 | ||
3824 | /* Decide how we should add IP to the instruction stream. */ | |
3825 | ||
3826 | static enum append_method | |
3827 | get_append_method (struct mips_cl_insn *ip) | |
3828 | { | |
3829 | unsigned long pinfo; | |
3830 | ||
3831 | /* The relaxed version of a macro sequence must be inherently | |
3832 | hazard-free. */ | |
3833 | if (mips_relax.sequence == 2) | |
3834 | return APPEND_ADD; | |
3835 | ||
3836 | /* We must not dabble with instructions in a ".set norerorder" block. */ | |
3837 | if (mips_opts.noreorder) | |
3838 | return APPEND_ADD; | |
3839 | ||
3840 | /* Otherwise, it's our responsibility to fill branch delay slots. */ | |
11625dd8 | 3841 | if (delayed_branch_p (ip)) |
a4e06468 | 3842 | { |
11625dd8 | 3843 | if (!branch_likely_p (ip) && can_swap_branch_p (ip)) |
a4e06468 RS |
3844 | return APPEND_SWAP; |
3845 | ||
11625dd8 | 3846 | pinfo = ip->insn_mo->pinfo; |
a4e06468 RS |
3847 | if (mips_opts.mips16 |
3848 | && ISA_SUPPORTS_MIPS16E | |
a4e06468 RS |
3849 | && (pinfo & (MIPS16_INSN_READ_X | MIPS16_INSN_READ_31))) |
3850 | return APPEND_ADD_COMPACT; | |
3851 | ||
3852 | return APPEND_ADD_WITH_NOP; | |
3853 | } | |
3854 | ||
a4e06468 RS |
3855 | return APPEND_ADD; |
3856 | } | |
3857 | ||
ceb94aa5 RS |
3858 | /* IP is a MIPS16 instruction whose opcode we have just changed. |
3859 | Point IP->insn_mo to the new opcode's definition. */ | |
3860 | ||
3861 | static void | |
3862 | find_altered_mips16_opcode (struct mips_cl_insn *ip) | |
3863 | { | |
3864 | const struct mips_opcode *mo, *end; | |
3865 | ||
3866 | end = &mips16_opcodes[bfd_mips16_num_opcodes]; | |
3867 | for (mo = ip->insn_mo; mo < end; mo++) | |
3868 | if ((ip->insn_opcode & mo->mask) == mo->match) | |
3869 | { | |
3870 | ip->insn_mo = mo; | |
3871 | return; | |
3872 | } | |
3873 | abort (); | |
3874 | } | |
3875 | ||
df58fc94 RS |
3876 | /* For microMIPS macros, we need to generate a local number label |
3877 | as the target of branches. */ | |
3878 | #define MICROMIPS_LABEL_CHAR '\037' | |
3879 | static unsigned long micromips_target_label; | |
3880 | static char micromips_target_name[32]; | |
3881 | ||
3882 | static char * | |
3883 | micromips_label_name (void) | |
3884 | { | |
3885 | char *p = micromips_target_name; | |
3886 | char symbol_name_temporary[24]; | |
3887 | unsigned long l; | |
3888 | int i; | |
3889 | ||
3890 | if (*p) | |
3891 | return p; | |
3892 | ||
3893 | i = 0; | |
3894 | l = micromips_target_label; | |
3895 | #ifdef LOCAL_LABEL_PREFIX | |
3896 | *p++ = LOCAL_LABEL_PREFIX; | |
3897 | #endif | |
3898 | *p++ = 'L'; | |
3899 | *p++ = MICROMIPS_LABEL_CHAR; | |
3900 | do | |
3901 | { | |
3902 | symbol_name_temporary[i++] = l % 10 + '0'; | |
3903 | l /= 10; | |
3904 | } | |
3905 | while (l != 0); | |
3906 | while (i > 0) | |
3907 | *p++ = symbol_name_temporary[--i]; | |
3908 | *p = '\0'; | |
3909 | ||
3910 | return micromips_target_name; | |
3911 | } | |
3912 | ||
3913 | static void | |
3914 | micromips_label_expr (expressionS *label_expr) | |
3915 | { | |
3916 | label_expr->X_op = O_symbol; | |
3917 | label_expr->X_add_symbol = symbol_find_or_make (micromips_label_name ()); | |
3918 | label_expr->X_add_number = 0; | |
3919 | } | |
3920 | ||
3921 | static void | |
3922 | micromips_label_inc (void) | |
3923 | { | |
3924 | micromips_target_label++; | |
3925 | *micromips_target_name = '\0'; | |
3926 | } | |
3927 | ||
3928 | static void | |
3929 | micromips_add_label (void) | |
3930 | { | |
3931 | symbolS *s; | |
3932 | ||
3933 | s = colon (micromips_label_name ()); | |
3934 | micromips_label_inc (); | |
3935 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
3936 | if (IS_ELF) | |
3937 | S_SET_OTHER (s, ELF_ST_SET_MICROMIPS (S_GET_OTHER (s))); | |
db9b2be4 AM |
3938 | #else |
3939 | (void) s; | |
df58fc94 RS |
3940 | #endif |
3941 | } | |
3942 | ||
3943 | /* If assembling microMIPS code, then return the microMIPS reloc | |
3944 | corresponding to the requested one if any. Otherwise return | |
3945 | the reloc unchanged. */ | |
3946 | ||
3947 | static bfd_reloc_code_real_type | |
3948 | micromips_map_reloc (bfd_reloc_code_real_type reloc) | |
3949 | { | |
3950 | static const bfd_reloc_code_real_type relocs[][2] = | |
3951 | { | |
3952 | /* Keep sorted incrementally by the left-hand key. */ | |
3953 | { BFD_RELOC_16_PCREL_S2, BFD_RELOC_MICROMIPS_16_PCREL_S1 }, | |
3954 | { BFD_RELOC_GPREL16, BFD_RELOC_MICROMIPS_GPREL16 }, | |
3955 | { BFD_RELOC_MIPS_JMP, BFD_RELOC_MICROMIPS_JMP }, | |
3956 | { BFD_RELOC_HI16, BFD_RELOC_MICROMIPS_HI16 }, | |
3957 | { BFD_RELOC_HI16_S, BFD_RELOC_MICROMIPS_HI16_S }, | |
3958 | { BFD_RELOC_LO16, BFD_RELOC_MICROMIPS_LO16 }, | |
3959 | { BFD_RELOC_MIPS_LITERAL, BFD_RELOC_MICROMIPS_LITERAL }, | |
3960 | { BFD_RELOC_MIPS_GOT16, BFD_RELOC_MICROMIPS_GOT16 }, | |
3961 | { BFD_RELOC_MIPS_CALL16, BFD_RELOC_MICROMIPS_CALL16 }, | |
3962 | { BFD_RELOC_MIPS_GOT_HI16, BFD_RELOC_MICROMIPS_GOT_HI16 }, | |
3963 | { BFD_RELOC_MIPS_GOT_LO16, BFD_RELOC_MICROMIPS_GOT_LO16 }, | |
3964 | { BFD_RELOC_MIPS_CALL_HI16, BFD_RELOC_MICROMIPS_CALL_HI16 }, | |
3965 | { BFD_RELOC_MIPS_CALL_LO16, BFD_RELOC_MICROMIPS_CALL_LO16 }, | |
3966 | { BFD_RELOC_MIPS_SUB, BFD_RELOC_MICROMIPS_SUB }, | |
3967 | { BFD_RELOC_MIPS_GOT_PAGE, BFD_RELOC_MICROMIPS_GOT_PAGE }, | |
3968 | { BFD_RELOC_MIPS_GOT_OFST, BFD_RELOC_MICROMIPS_GOT_OFST }, | |
3969 | { BFD_RELOC_MIPS_GOT_DISP, BFD_RELOC_MICROMIPS_GOT_DISP }, | |
3970 | { BFD_RELOC_MIPS_HIGHEST, BFD_RELOC_MICROMIPS_HIGHEST }, | |
3971 | { BFD_RELOC_MIPS_HIGHER, BFD_RELOC_MICROMIPS_HIGHER }, | |
3972 | { BFD_RELOC_MIPS_SCN_DISP, BFD_RELOC_MICROMIPS_SCN_DISP }, | |
3973 | { BFD_RELOC_MIPS_TLS_GD, BFD_RELOC_MICROMIPS_TLS_GD }, | |
3974 | { BFD_RELOC_MIPS_TLS_LDM, BFD_RELOC_MICROMIPS_TLS_LDM }, | |
3975 | { BFD_RELOC_MIPS_TLS_DTPREL_HI16, BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16 }, | |
3976 | { BFD_RELOC_MIPS_TLS_DTPREL_LO16, BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16 }, | |
3977 | { BFD_RELOC_MIPS_TLS_GOTTPREL, BFD_RELOC_MICROMIPS_TLS_GOTTPREL }, | |
3978 | { BFD_RELOC_MIPS_TLS_TPREL_HI16, BFD_RELOC_MICROMIPS_TLS_TPREL_HI16 }, | |
3979 | { BFD_RELOC_MIPS_TLS_TPREL_LO16, BFD_RELOC_MICROMIPS_TLS_TPREL_LO16 } | |
3980 | }; | |
3981 | bfd_reloc_code_real_type r; | |
3982 | size_t i; | |
3983 | ||
3984 | if (!mips_opts.micromips) | |
3985 | return reloc; | |
3986 | for (i = 0; i < ARRAY_SIZE (relocs); i++) | |
3987 | { | |
3988 | r = relocs[i][0]; | |
3989 | if (r > reloc) | |
3990 | return reloc; | |
3991 | if (r == reloc) | |
3992 | return relocs[i][1]; | |
3993 | } | |
3994 | return reloc; | |
3995 | } | |
3996 | ||
71400594 RS |
3997 | /* Output an instruction. IP is the instruction information. |
3998 | ADDRESS_EXPR is an operand of the instruction to be used with | |
df58fc94 RS |
3999 | RELOC_TYPE. EXPANSIONP is true if the instruction is part of |
4000 | a macro expansion. */ | |
71400594 RS |
4001 | |
4002 | static void | |
4003 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
df58fc94 | 4004 | bfd_reloc_code_real_type *reloc_type, bfd_boolean expansionp) |
71400594 | 4005 | { |
14fe068b | 4006 | unsigned long prev_pinfo2, pinfo; |
71400594 | 4007 | bfd_boolean relaxed_branch = FALSE; |
a4e06468 | 4008 | enum append_method method; |
2309ddf2 | 4009 | bfd_boolean relax32; |
2b0c8b40 | 4010 | int branch_disp; |
71400594 | 4011 | |
2309ddf2 | 4012 | if (mips_fix_loongson2f && !HAVE_CODE_COMPRESSION) |
c67a084a NC |
4013 | fix_loongson2f (ip); |
4014 | ||
df58fc94 | 4015 | mips_mark_labels (); |
71400594 | 4016 | |
738f4d98 | 4017 | file_ase_mips16 |= mips_opts.mips16; |
df58fc94 | 4018 | file_ase_micromips |= mips_opts.micromips; |
738f4d98 | 4019 | |
df58fc94 | 4020 | prev_pinfo2 = history[0].insn_mo->pinfo2; |
71400594 | 4021 | pinfo = ip->insn_mo->pinfo; |
df58fc94 RS |
4022 | |
4023 | if (mips_opts.micromips | |
4024 | && !expansionp | |
4025 | && (((prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 | |
4026 | && micromips_insn_length (ip->insn_mo) != 2) | |
4027 | || ((prev_pinfo2 & INSN2_BRANCH_DELAY_32BIT) != 0 | |
4028 | && micromips_insn_length (ip->insn_mo) != 4))) | |
4029 | as_warn (_("Wrong size instruction in a %u-bit branch delay slot"), | |
4030 | (prev_pinfo2 & INSN2_BRANCH_DELAY_16BIT) != 0 ? 16 : 32); | |
71400594 | 4031 | |
15be625d CM |
4032 | if (address_expr == NULL) |
4033 | ip->complete_p = 1; | |
4034 | else if (*reloc_type <= BFD_RELOC_UNUSED | |
4035 | && address_expr->X_op == O_constant) | |
4036 | { | |
4037 | unsigned int tmp; | |
4038 | ||
4039 | ip->complete_p = 1; | |
4040 | switch (*reloc_type) | |
4041 | { | |
4042 | case BFD_RELOC_32: | |
4043 | ip->insn_opcode |= address_expr->X_add_number; | |
4044 | break; | |
4045 | ||
4046 | case BFD_RELOC_MIPS_HIGHEST: | |
4047 | tmp = (address_expr->X_add_number + 0x800080008000ull) >> 48; | |
4048 | ip->insn_opcode |= tmp & 0xffff; | |
4049 | break; | |
4050 | ||
4051 | case BFD_RELOC_MIPS_HIGHER: | |
4052 | tmp = (address_expr->X_add_number + 0x80008000ull) >> 32; | |
4053 | ip->insn_opcode |= tmp & 0xffff; | |
4054 | break; | |
4055 | ||
4056 | case BFD_RELOC_HI16_S: | |
4057 | tmp = (address_expr->X_add_number + 0x8000) >> 16; | |
4058 | ip->insn_opcode |= tmp & 0xffff; | |
4059 | break; | |
4060 | ||
4061 | case BFD_RELOC_HI16: | |
4062 | ip->insn_opcode |= (address_expr->X_add_number >> 16) & 0xffff; | |
4063 | break; | |
4064 | ||
4065 | case BFD_RELOC_UNUSED: | |
4066 | case BFD_RELOC_LO16: | |
4067 | case BFD_RELOC_MIPS_GOT_DISP: | |
4068 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; | |
4069 | break; | |
4070 | ||
4071 | case BFD_RELOC_MIPS_JMP: | |
df58fc94 RS |
4072 | { |
4073 | int shift; | |
4074 | ||
4075 | shift = mips_opts.micromips ? 1 : 2; | |
4076 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
4077 | as_bad (_("jump to misaligned address (0x%lx)"), | |
4078 | (unsigned long) address_expr->X_add_number); | |
4079 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
4080 | & 0x3ffffff); | |
4081 | ip->complete_p = 0; | |
4082 | } | |
15be625d CM |
4083 | break; |
4084 | ||
4085 | case BFD_RELOC_MIPS16_JMP: | |
4086 | if ((address_expr->X_add_number & 3) != 0) | |
4087 | as_bad (_("jump to misaligned address (0x%lx)"), | |
4088 | (unsigned long) address_expr->X_add_number); | |
4089 | ip->insn_opcode |= | |
4090 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
4091 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
4092 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
4093 | ip->complete_p = 0; | |
4094 | break; | |
4095 | ||
4096 | case BFD_RELOC_16_PCREL_S2: | |
df58fc94 RS |
4097 | { |
4098 | int shift; | |
4099 | ||
4100 | shift = mips_opts.micromips ? 1 : 2; | |
4101 | if ((address_expr->X_add_number & ((1 << shift) - 1)) != 0) | |
4102 | as_bad (_("branch to misaligned address (0x%lx)"), | |
4103 | (unsigned long) address_expr->X_add_number); | |
4104 | if (!mips_relax_branch) | |
4105 | { | |
4106 | if ((address_expr->X_add_number + (1 << (shift + 15))) | |
4107 | & ~((1 << (shift + 16)) - 1)) | |
4108 | as_bad (_("branch address range overflow (0x%lx)"), | |
4109 | (unsigned long) address_expr->X_add_number); | |
4110 | ip->insn_opcode |= ((address_expr->X_add_number >> shift) | |
4111 | & 0xffff); | |
4112 | } | |
4113 | ip->complete_p = 0; | |
4114 | } | |
15be625d CM |
4115 | break; |
4116 | ||
4117 | default: | |
4118 | internalError (); | |
4119 | } | |
4120 | } | |
4121 | ||
71400594 RS |
4122 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
4123 | { | |
4124 | /* There are a lot of optimizations we could do that we don't. | |
4125 | In particular, we do not, in general, reorder instructions. | |
4126 | If you use gcc with optimization, it will reorder | |
4127 | instructions and generally do much more optimization then we | |
4128 | do here; repeating all that work in the assembler would only | |
4129 | benefit hand written assembly code, and does not seem worth | |
4130 | it. */ | |
4131 | int nops = (mips_optimize == 0 | |
932d1a1b RS |
4132 | ? nops_for_insn (0, history, NULL) |
4133 | : nops_for_insn_or_target (0, history, ip)); | |
71400594 | 4134 | if (nops > 0) |
252b5132 RH |
4135 | { |
4136 | fragS *old_frag; | |
4137 | unsigned long old_frag_offset; | |
4138 | int i; | |
252b5132 RH |
4139 | |
4140 | old_frag = frag_now; | |
4141 | old_frag_offset = frag_now_fix (); | |
4142 | ||
4143 | for (i = 0; i < nops; i++) | |
14fe068b RS |
4144 | add_fixed_insn (NOP_INSN); |
4145 | insert_into_history (0, nops, NOP_INSN); | |
252b5132 RH |
4146 | |
4147 | if (listing) | |
4148 | { | |
4149 | listing_prev_line (); | |
4150 | /* We may be at the start of a variant frag. In case we | |
4151 | are, make sure there is enough space for the frag | |
4152 | after the frags created by listing_prev_line. The | |
4153 | argument to frag_grow here must be at least as large | |
4154 | as the argument to all other calls to frag_grow in | |
4155 | this file. We don't have to worry about being in the | |
4156 | middle of a variant frag, because the variants insert | |
4157 | all needed nop instructions themselves. */ | |
4158 | frag_grow (40); | |
4159 | } | |
4160 | ||
462427c4 | 4161 | mips_move_text_labels (); |
252b5132 RH |
4162 | |
4163 | #ifndef NO_ECOFF_DEBUGGING | |
4164 | if (ECOFF_DEBUGGING) | |
4165 | ecoff_fix_loc (old_frag, old_frag_offset); | |
4166 | #endif | |
4167 | } | |
71400594 RS |
4168 | } |
4169 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
4170 | { | |
932d1a1b RS |
4171 | int nops; |
4172 | ||
4173 | /* Work out how many nops in prev_nop_frag are needed by IP, | |
4174 | ignoring hazards generated by the first prev_nop_frag_since | |
4175 | instructions. */ | |
4176 | nops = nops_for_insn_or_target (prev_nop_frag_since, history, ip); | |
9c2799c2 | 4177 | gas_assert (nops <= prev_nop_frag_holds); |
252b5132 | 4178 | |
71400594 RS |
4179 | /* Enforce NOPS as a minimum. */ |
4180 | if (nops > prev_nop_frag_required) | |
4181 | prev_nop_frag_required = nops; | |
252b5132 | 4182 | |
71400594 RS |
4183 | if (prev_nop_frag_holds == prev_nop_frag_required) |
4184 | { | |
4185 | /* Settle for the current number of nops. Update the history | |
4186 | accordingly (for the benefit of any future .set reorder code). */ | |
4187 | prev_nop_frag = NULL; | |
4188 | insert_into_history (prev_nop_frag_since, | |
4189 | prev_nop_frag_holds, NOP_INSN); | |
4190 | } | |
4191 | else | |
4192 | { | |
4193 | /* Allow this instruction to replace one of the nops that was | |
4194 | tentatively added to prev_nop_frag. */ | |
df58fc94 | 4195 | prev_nop_frag->fr_fix -= NOP_INSN_SIZE; |
71400594 RS |
4196 | prev_nop_frag_holds--; |
4197 | prev_nop_frag_since++; | |
252b5132 RH |
4198 | } |
4199 | } | |
4200 | ||
a4e06468 | 4201 | method = get_append_method (ip); |
2b0c8b40 | 4202 | branch_disp = method == APPEND_SWAP ? insn_length (history) : 0; |
a4e06468 | 4203 | |
58e2ea4d MR |
4204 | #ifdef OBJ_ELF |
4205 | /* The value passed to dwarf2_emit_insn is the distance between | |
4206 | the beginning of the current instruction and the address that | |
e3a82c8e MR |
4207 | should be recorded in the debug tables. This is normally the |
4208 | current address. | |
4209 | ||
df58fc94 RS |
4210 | For MIPS16/microMIPS debug info we want to use ISA-encoded |
4211 | addresses, so we use -1 for an address higher by one than the | |
4212 | current one. | |
e3a82c8e MR |
4213 | |
4214 | If the instruction produced is a branch that we will swap with | |
4215 | the preceding instruction, then we add the displacement by which | |
4216 | the branch will be moved backwards. This is more appropriate | |
2309ddf2 MR |
4217 | and for MIPS16/microMIPS code also prevents a debugger from |
4218 | placing a breakpoint in the middle of the branch (and corrupting | |
4219 | code if software breakpoints are used). */ | |
2b0c8b40 | 4220 | dwarf2_emit_insn ((HAVE_CODE_COMPRESSION ? -1 : 0) + branch_disp); |
58e2ea4d MR |
4221 | #endif |
4222 | ||
df58fc94 RS |
4223 | relax32 = (mips_relax_branch |
4224 | /* Don't try branch relaxation within .set nomacro, or within | |
4225 | .set noat if we use $at for PIC computations. If it turns | |
4226 | out that the branch was out-of-range, we'll get an error. */ | |
4227 | && !mips_opts.warn_about_macros | |
4228 | && (mips_opts.at || mips_pic == NO_PIC) | |
4229 | /* Don't relax BPOSGE32/64 as they have no complementing | |
4230 | branches. */ | |
40209cad | 4231 | && !(ip->insn_mo->membership & (INSN_DSP64 | INSN_DSP))); |
df58fc94 RS |
4232 | |
4233 | if (!HAVE_CODE_COMPRESSION | |
4234 | && address_expr | |
4235 | && relax32 | |
0b25d3e6 | 4236 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
11625dd8 | 4237 | && delayed_branch_p (ip)) |
4a6a3df4 | 4238 | { |
895921c9 | 4239 | relaxed_branch = TRUE; |
1e915849 RS |
4240 | add_relaxed_insn (ip, (relaxed_branch_length |
4241 | (NULL, NULL, | |
11625dd8 RS |
4242 | uncond_branch_p (ip) ? -1 |
4243 | : branch_likely_p (ip) ? 1 | |
1e915849 RS |
4244 | : 0)), 4, |
4245 | RELAX_BRANCH_ENCODE | |
66b3e8da | 4246 | (AT, |
11625dd8 RS |
4247 | uncond_branch_p (ip), |
4248 | branch_likely_p (ip), | |
1e915849 RS |
4249 | pinfo & INSN_WRITE_GPR_31, |
4250 | 0), | |
4251 | address_expr->X_add_symbol, | |
4252 | address_expr->X_add_number); | |
4a6a3df4 AO |
4253 | *reloc_type = BFD_RELOC_UNUSED; |
4254 | } | |
df58fc94 RS |
4255 | else if (mips_opts.micromips |
4256 | && address_expr | |
4257 | && ((relax32 && *reloc_type == BFD_RELOC_16_PCREL_S2) | |
4258 | || *reloc_type > BFD_RELOC_UNUSED) | |
40209cad MR |
4259 | && (delayed_branch_p (ip) || compact_branch_p (ip)) |
4260 | /* Don't try branch relaxation when users specify | |
4261 | 16-bit/32-bit instructions. */ | |
4262 | && !forced_insn_length) | |
df58fc94 RS |
4263 | { |
4264 | bfd_boolean relax16 = *reloc_type > BFD_RELOC_UNUSED; | |
4265 | int type = relax16 ? *reloc_type - BFD_RELOC_UNUSED : 0; | |
11625dd8 RS |
4266 | int uncond = uncond_branch_p (ip) ? -1 : 0; |
4267 | int compact = compact_branch_p (ip); | |
df58fc94 RS |
4268 | int al = pinfo & INSN_WRITE_GPR_31; |
4269 | int length32; | |
4270 | ||
4271 | gas_assert (address_expr != NULL); | |
4272 | gas_assert (!mips_relax.sequence); | |
4273 | ||
2b0c8b40 | 4274 | relaxed_branch = TRUE; |
df58fc94 RS |
4275 | length32 = relaxed_micromips_32bit_branch_length (NULL, NULL, uncond); |
4276 | add_relaxed_insn (ip, relax32 ? length32 : 4, relax16 ? 2 : 4, | |
40209cad MR |
4277 | RELAX_MICROMIPS_ENCODE (type, AT, uncond, compact, al, |
4278 | relax32, 0, 0), | |
df58fc94 RS |
4279 | address_expr->X_add_symbol, |
4280 | address_expr->X_add_number); | |
4281 | *reloc_type = BFD_RELOC_UNUSED; | |
4282 | } | |
4283 | else if (mips_opts.mips16 && *reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
4284 | { |
4285 | /* We need to set up a variant frag. */ | |
df58fc94 | 4286 | gas_assert (address_expr != NULL); |
1e915849 RS |
4287 | add_relaxed_insn (ip, 4, 0, |
4288 | RELAX_MIPS16_ENCODE | |
4289 | (*reloc_type - BFD_RELOC_UNUSED, | |
df58fc94 | 4290 | forced_insn_length == 2, forced_insn_length == 4, |
11625dd8 | 4291 | delayed_branch_p (&history[0]), |
1e915849 RS |
4292 | history[0].mips16_absolute_jump_p), |
4293 | make_expr_symbol (address_expr), 0); | |
252b5132 | 4294 | } |
252b5132 RH |
4295 | else if (mips_opts.mips16 |
4296 | && ! ip->use_extend | |
f6688943 | 4297 | && *reloc_type != BFD_RELOC_MIPS16_JMP) |
9497f5ac | 4298 | { |
11625dd8 | 4299 | if (!delayed_branch_p (ip)) |
b8ee1a6e DU |
4300 | /* Make sure there is enough room to swap this instruction with |
4301 | a following jump instruction. */ | |
4302 | frag_grow (6); | |
1e915849 | 4303 | add_fixed_insn (ip); |
252b5132 RH |
4304 | } |
4305 | else | |
4306 | { | |
4307 | if (mips_opts.mips16 | |
4308 | && mips_opts.noreorder | |
11625dd8 | 4309 | && delayed_branch_p (&history[0])) |
252b5132 RH |
4310 | as_warn (_("extended instruction in delay slot")); |
4311 | ||
4d7206a2 RS |
4312 | if (mips_relax.sequence) |
4313 | { | |
4314 | /* If we've reached the end of this frag, turn it into a variant | |
4315 | frag and record the information for the instructions we've | |
4316 | written so far. */ | |
4317 | if (frag_room () < 4) | |
4318 | relax_close_frag (); | |
df58fc94 | 4319 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (ip); |
4d7206a2 RS |
4320 | } |
4321 | ||
584892a6 | 4322 | if (mips_relax.sequence != 2) |
df58fc94 RS |
4323 | { |
4324 | if (mips_macro_warning.first_insn_sizes[0] == 0) | |
4325 | mips_macro_warning.first_insn_sizes[0] = insn_length (ip); | |
4326 | mips_macro_warning.sizes[0] += insn_length (ip); | |
4327 | mips_macro_warning.insns[0]++; | |
4328 | } | |
584892a6 | 4329 | if (mips_relax.sequence != 1) |
df58fc94 RS |
4330 | { |
4331 | if (mips_macro_warning.first_insn_sizes[1] == 0) | |
4332 | mips_macro_warning.first_insn_sizes[1] = insn_length (ip); | |
4333 | mips_macro_warning.sizes[1] += insn_length (ip); | |
4334 | mips_macro_warning.insns[1]++; | |
4335 | } | |
584892a6 | 4336 | |
1e915849 RS |
4337 | if (mips_opts.mips16) |
4338 | { | |
4339 | ip->fixed_p = 1; | |
4340 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
4341 | } | |
4342 | add_fixed_insn (ip); | |
252b5132 RH |
4343 | } |
4344 | ||
9fe77896 | 4345 | if (!ip->complete_p && *reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 4346 | { |
df58fc94 | 4347 | bfd_reloc_code_real_type final_type[3]; |
2309ddf2 | 4348 | reloc_howto_type *howto0; |
9fe77896 RS |
4349 | reloc_howto_type *howto; |
4350 | int i; | |
34ce925e | 4351 | |
df58fc94 RS |
4352 | /* Perform any necessary conversion to microMIPS relocations |
4353 | and find out how many relocations there actually are. */ | |
4354 | for (i = 0; i < 3 && reloc_type[i] != BFD_RELOC_UNUSED; i++) | |
4355 | final_type[i] = micromips_map_reloc (reloc_type[i]); | |
4356 | ||
9fe77896 RS |
4357 | /* In a compound relocation, it is the final (outermost) |
4358 | operator that determines the relocated field. */ | |
2309ddf2 MR |
4359 | howto = howto0 = bfd_reloc_type_lookup (stdoutput, final_type[i - 1]); |
4360 | ||
9fe77896 RS |
4361 | if (howto == NULL) |
4362 | { | |
4363 | /* To reproduce this failure try assembling gas/testsuites/ | |
4364 | gas/mips/mips16-intermix.s with a mips-ecoff targeted | |
4365 | assembler. */ | |
df58fc94 RS |
4366 | as_bad (_("Unsupported MIPS relocation number %d"), |
4367 | final_type[i - 1]); | |
9fe77896 RS |
4368 | howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_16); |
4369 | } | |
2309ddf2 MR |
4370 | |
4371 | if (i > 1) | |
4372 | howto0 = bfd_reloc_type_lookup (stdoutput, final_type[0]); | |
9fe77896 RS |
4373 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
4374 | bfd_get_reloc_size (howto), | |
4375 | address_expr, | |
2309ddf2 MR |
4376 | howto0 && howto0->pc_relative, |
4377 | final_type[0]); | |
9fe77896 RS |
4378 | |
4379 | /* Tag symbols that have a R_MIPS16_26 relocation against them. */ | |
2309ddf2 | 4380 | if (final_type[0] == BFD_RELOC_MIPS16_JMP && ip->fixp[0]->fx_addsy) |
9fe77896 RS |
4381 | *symbol_get_tc (ip->fixp[0]->fx_addsy) = 1; |
4382 | ||
4383 | /* These relocations can have an addend that won't fit in | |
4384 | 4 octets for 64bit assembly. */ | |
4385 | if (HAVE_64BIT_GPRS | |
4386 | && ! howto->partial_inplace | |
4387 | && (reloc_type[0] == BFD_RELOC_16 | |
4388 | || reloc_type[0] == BFD_RELOC_32 | |
4389 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
4390 | || reloc_type[0] == BFD_RELOC_GPREL16 | |
4391 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
4392 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
4393 | || reloc_type[0] == BFD_RELOC_64 | |
4394 | || reloc_type[0] == BFD_RELOC_CTOR | |
4395 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
4396 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
4397 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
4398 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
4399 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
4400 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT | |
4401 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
4402 | || hi16_reloc_p (reloc_type[0]) | |
4403 | || lo16_reloc_p (reloc_type[0]))) | |
4404 | ip->fixp[0]->fx_no_overflow = 1; | |
4405 | ||
4406 | if (mips_relax.sequence) | |
4407 | { | |
4408 | if (mips_relax.first_fixup == 0) | |
4409 | mips_relax.first_fixup = ip->fixp[0]; | |
4410 | } | |
4411 | else if (reloc_needs_lo_p (*reloc_type)) | |
4412 | { | |
4413 | struct mips_hi_fixup *hi_fixup; | |
4414 | ||
4415 | /* Reuse the last entry if it already has a matching %lo. */ | |
4416 | hi_fixup = mips_hi_fixup_list; | |
4417 | if (hi_fixup == 0 | |
4418 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
4d7206a2 | 4419 | { |
9fe77896 RS |
4420 | hi_fixup = ((struct mips_hi_fixup *) |
4421 | xmalloc (sizeof (struct mips_hi_fixup))); | |
4422 | hi_fixup->next = mips_hi_fixup_list; | |
4423 | mips_hi_fixup_list = hi_fixup; | |
4d7206a2 | 4424 | } |
9fe77896 RS |
4425 | hi_fixup->fixp = ip->fixp[0]; |
4426 | hi_fixup->seg = now_seg; | |
4427 | } | |
252b5132 | 4428 | |
9fe77896 RS |
4429 | /* Add fixups for the second and third relocations, if given. |
4430 | Note that the ABI allows the second relocation to be | |
4431 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
4432 | moment we only use RSS_UNDEF, but we could add support | |
4433 | for the others if it ever becomes necessary. */ | |
4434 | for (i = 1; i < 3; i++) | |
4435 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
4436 | { | |
4437 | ip->fixp[i] = fix_new (ip->frag, ip->where, | |
4438 | ip->fixp[0]->fx_size, NULL, 0, | |
df58fc94 | 4439 | FALSE, final_type[i]); |
f6688943 | 4440 | |
9fe77896 RS |
4441 | /* Use fx_tcbit to mark compound relocs. */ |
4442 | ip->fixp[0]->fx_tcbit = 1; | |
4443 | ip->fixp[i]->fx_tcbit = 1; | |
4444 | } | |
252b5132 | 4445 | } |
1e915849 | 4446 | install_insn (ip); |
252b5132 RH |
4447 | |
4448 | /* Update the register mask information. */ | |
4c260379 RS |
4449 | mips_gprmask |= gpr_read_mask (ip) | gpr_write_mask (ip); |
4450 | mips_cprmask[1] |= fpr_read_mask (ip) | fpr_write_mask (ip); | |
252b5132 | 4451 | |
a4e06468 | 4452 | switch (method) |
252b5132 | 4453 | { |
a4e06468 RS |
4454 | case APPEND_ADD: |
4455 | insert_into_history (0, 1, ip); | |
4456 | break; | |
4457 | ||
4458 | case APPEND_ADD_WITH_NOP: | |
14fe068b RS |
4459 | { |
4460 | struct mips_cl_insn *nop; | |
4461 | ||
4462 | insert_into_history (0, 1, ip); | |
4463 | nop = get_delay_slot_nop (ip); | |
4464 | add_fixed_insn (nop); | |
4465 | insert_into_history (0, 1, nop); | |
4466 | if (mips_relax.sequence) | |
4467 | mips_relax.sizes[mips_relax.sequence - 1] += insn_length (nop); | |
4468 | } | |
a4e06468 RS |
4469 | break; |
4470 | ||
4471 | case APPEND_ADD_COMPACT: | |
4472 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
4473 | gas_assert (mips_opts.mips16); | |
4474 | ip->insn_opcode |= 0x0080; | |
4475 | find_altered_mips16_opcode (ip); | |
4476 | install_insn (ip); | |
4477 | insert_into_history (0, 1, ip); | |
4478 | break; | |
4479 | ||
4480 | case APPEND_SWAP: | |
4481 | { | |
4482 | struct mips_cl_insn delay = history[0]; | |
4483 | if (mips_opts.mips16) | |
4484 | { | |
4485 | know (delay.frag == ip->frag); | |
4486 | move_insn (ip, delay.frag, delay.where); | |
4487 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
4488 | } | |
4489 | else if (relaxed_branch) | |
4490 | { | |
4491 | /* Add the delay slot instruction to the end of the | |
4492 | current frag and shrink the fixed part of the | |
4493 | original frag. If the branch occupies the tail of | |
4494 | the latter, move it backwards to cover the gap. */ | |
2b0c8b40 | 4495 | delay.frag->fr_fix -= branch_disp; |
a4e06468 | 4496 | if (delay.frag == ip->frag) |
2b0c8b40 | 4497 | move_insn (ip, ip->frag, ip->where - branch_disp); |
a4e06468 RS |
4498 | add_fixed_insn (&delay); |
4499 | } | |
4500 | else | |
4501 | { | |
2b0c8b40 MR |
4502 | move_insn (&delay, ip->frag, |
4503 | ip->where - branch_disp + insn_length (ip)); | |
a4e06468 RS |
4504 | move_insn (ip, history[0].frag, history[0].where); |
4505 | } | |
4506 | history[0] = *ip; | |
4507 | delay.fixed_p = 1; | |
4508 | insert_into_history (0, 1, &delay); | |
4509 | } | |
4510 | break; | |
252b5132 RH |
4511 | } |
4512 | ||
13408f1e | 4513 | /* If we have just completed an unconditional branch, clear the history. */ |
11625dd8 RS |
4514 | if ((delayed_branch_p (&history[1]) && uncond_branch_p (&history[1])) |
4515 | || (compact_branch_p (&history[0]) && uncond_branch_p (&history[0]))) | |
13408f1e RS |
4516 | mips_no_prev_insn (); |
4517 | ||
df58fc94 RS |
4518 | /* We need to emit a label at the end of branch-likely macros. */ |
4519 | if (emit_branch_likely_macro) | |
4520 | { | |
4521 | emit_branch_likely_macro = FALSE; | |
4522 | micromips_add_label (); | |
4523 | } | |
4524 | ||
252b5132 RH |
4525 | /* We just output an insn, so the next one doesn't have a label. */ |
4526 | mips_clear_insn_labels (); | |
252b5132 RH |
4527 | } |
4528 | ||
7d10b47d | 4529 | /* Forget that there was any previous instruction or label. */ |
252b5132 RH |
4530 | |
4531 | static void | |
7d10b47d | 4532 | mips_no_prev_insn (void) |
252b5132 | 4533 | { |
7d10b47d RS |
4534 | prev_nop_frag = NULL; |
4535 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
4536 | mips_clear_insn_labels (); |
4537 | } | |
4538 | ||
7d10b47d RS |
4539 | /* This function must be called before we emit something other than |
4540 | instructions. It is like mips_no_prev_insn except that it inserts | |
4541 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 4542 | |
7d10b47d RS |
4543 | void |
4544 | mips_emit_delays (void) | |
252b5132 RH |
4545 | { |
4546 | if (! mips_opts.noreorder) | |
4547 | { | |
932d1a1b | 4548 | int nops = nops_for_insn (0, history, NULL); |
252b5132 RH |
4549 | if (nops > 0) |
4550 | { | |
7d10b47d RS |
4551 | while (nops-- > 0) |
4552 | add_fixed_insn (NOP_INSN); | |
462427c4 | 4553 | mips_move_text_labels (); |
7d10b47d RS |
4554 | } |
4555 | } | |
4556 | mips_no_prev_insn (); | |
4557 | } | |
4558 | ||
4559 | /* Start a (possibly nested) noreorder block. */ | |
4560 | ||
4561 | static void | |
4562 | start_noreorder (void) | |
4563 | { | |
4564 | if (mips_opts.noreorder == 0) | |
4565 | { | |
4566 | unsigned int i; | |
4567 | int nops; | |
4568 | ||
4569 | /* None of the instructions before the .set noreorder can be moved. */ | |
4570 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
4571 | history[i].fixed_p = 1; | |
4572 | ||
4573 | /* Insert any nops that might be needed between the .set noreorder | |
4574 | block and the previous instructions. We will later remove any | |
4575 | nops that turn out not to be needed. */ | |
932d1a1b | 4576 | nops = nops_for_insn (0, history, NULL); |
7d10b47d RS |
4577 | if (nops > 0) |
4578 | { | |
4579 | if (mips_optimize != 0) | |
252b5132 RH |
4580 | { |
4581 | /* Record the frag which holds the nop instructions, so | |
4582 | that we can remove them if we don't need them. */ | |
df58fc94 | 4583 | frag_grow (nops * NOP_INSN_SIZE); |
252b5132 RH |
4584 | prev_nop_frag = frag_now; |
4585 | prev_nop_frag_holds = nops; | |
4586 | prev_nop_frag_required = 0; | |
4587 | prev_nop_frag_since = 0; | |
4588 | } | |
4589 | ||
4590 | for (; nops > 0; --nops) | |
1e915849 | 4591 | add_fixed_insn (NOP_INSN); |
252b5132 | 4592 | |
7d10b47d RS |
4593 | /* Move on to a new frag, so that it is safe to simply |
4594 | decrease the size of prev_nop_frag. */ | |
4595 | frag_wane (frag_now); | |
4596 | frag_new (0); | |
462427c4 | 4597 | mips_move_text_labels (); |
252b5132 | 4598 | } |
df58fc94 | 4599 | mips_mark_labels (); |
7d10b47d | 4600 | mips_clear_insn_labels (); |
252b5132 | 4601 | } |
7d10b47d RS |
4602 | mips_opts.noreorder++; |
4603 | mips_any_noreorder = 1; | |
4604 | } | |
252b5132 | 4605 | |
7d10b47d | 4606 | /* End a nested noreorder block. */ |
252b5132 | 4607 | |
7d10b47d RS |
4608 | static void |
4609 | end_noreorder (void) | |
4610 | { | |
4611 | mips_opts.noreorder--; | |
4612 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
4613 | { | |
4614 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
4615 | handling nop insertion the .set reorder way. */ | |
4616 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
df58fc94 | 4617 | * NOP_INSN_SIZE); |
7d10b47d RS |
4618 | insert_into_history (prev_nop_frag_since, |
4619 | prev_nop_frag_required, NOP_INSN); | |
4620 | prev_nop_frag = NULL; | |
4621 | } | |
252b5132 RH |
4622 | } |
4623 | ||
584892a6 RS |
4624 | /* Set up global variables for the start of a new macro. */ |
4625 | ||
4626 | static void | |
4627 | macro_start (void) | |
4628 | { | |
4629 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
df58fc94 RS |
4630 | memset (&mips_macro_warning.first_insn_sizes, 0, |
4631 | sizeof (mips_macro_warning.first_insn_sizes)); | |
4632 | memset (&mips_macro_warning.insns, 0, sizeof (mips_macro_warning.insns)); | |
584892a6 | 4633 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder |
11625dd8 | 4634 | && delayed_branch_p (&history[0])); |
df58fc94 RS |
4635 | switch (history[0].insn_mo->pinfo2 |
4636 | & (INSN2_BRANCH_DELAY_32BIT | INSN2_BRANCH_DELAY_16BIT)) | |
4637 | { | |
4638 | case INSN2_BRANCH_DELAY_32BIT: | |
4639 | mips_macro_warning.delay_slot_length = 4; | |
4640 | break; | |
4641 | case INSN2_BRANCH_DELAY_16BIT: | |
4642 | mips_macro_warning.delay_slot_length = 2; | |
4643 | break; | |
4644 | default: | |
4645 | mips_macro_warning.delay_slot_length = 0; | |
4646 | break; | |
4647 | } | |
4648 | mips_macro_warning.first_frag = NULL; | |
584892a6 RS |
4649 | } |
4650 | ||
df58fc94 RS |
4651 | /* Given that a macro is longer than one instruction or of the wrong size, |
4652 | return the appropriate warning for it. Return null if no warning is | |
4653 | needed. SUBTYPE is a bitmask of RELAX_DELAY_SLOT, RELAX_DELAY_SLOT_16BIT, | |
4654 | RELAX_DELAY_SLOT_SIZE_FIRST, RELAX_DELAY_SLOT_SIZE_SECOND, | |
4655 | and RELAX_NOMACRO. */ | |
584892a6 RS |
4656 | |
4657 | static const char * | |
4658 | macro_warning (relax_substateT subtype) | |
4659 | { | |
4660 | if (subtype & RELAX_DELAY_SLOT) | |
4661 | return _("Macro instruction expanded into multiple instructions" | |
4662 | " in a branch delay slot"); | |
4663 | else if (subtype & RELAX_NOMACRO) | |
4664 | return _("Macro instruction expanded into multiple instructions"); | |
df58fc94 RS |
4665 | else if (subtype & (RELAX_DELAY_SLOT_SIZE_FIRST |
4666 | | RELAX_DELAY_SLOT_SIZE_SECOND)) | |
4667 | return ((subtype & RELAX_DELAY_SLOT_16BIT) | |
4668 | ? _("Macro instruction expanded into a wrong size instruction" | |
4669 | " in a 16-bit branch delay slot") | |
4670 | : _("Macro instruction expanded into a wrong size instruction" | |
4671 | " in a 32-bit branch delay slot")); | |
584892a6 RS |
4672 | else |
4673 | return 0; | |
4674 | } | |
4675 | ||
4676 | /* Finish up a macro. Emit warnings as appropriate. */ | |
4677 | ||
4678 | static void | |
4679 | macro_end (void) | |
4680 | { | |
df58fc94 RS |
4681 | /* Relaxation warning flags. */ |
4682 | relax_substateT subtype = 0; | |
4683 | ||
4684 | /* Check delay slot size requirements. */ | |
4685 | if (mips_macro_warning.delay_slot_length == 2) | |
4686 | subtype |= RELAX_DELAY_SLOT_16BIT; | |
4687 | if (mips_macro_warning.delay_slot_length != 0) | |
584892a6 | 4688 | { |
df58fc94 RS |
4689 | if (mips_macro_warning.delay_slot_length |
4690 | != mips_macro_warning.first_insn_sizes[0]) | |
4691 | subtype |= RELAX_DELAY_SLOT_SIZE_FIRST; | |
4692 | if (mips_macro_warning.delay_slot_length | |
4693 | != mips_macro_warning.first_insn_sizes[1]) | |
4694 | subtype |= RELAX_DELAY_SLOT_SIZE_SECOND; | |
4695 | } | |
584892a6 | 4696 | |
df58fc94 RS |
4697 | /* Check instruction count requirements. */ |
4698 | if (mips_macro_warning.insns[0] > 1 || mips_macro_warning.insns[1] > 1) | |
4699 | { | |
4700 | if (mips_macro_warning.insns[1] > mips_macro_warning.insns[0]) | |
584892a6 RS |
4701 | subtype |= RELAX_SECOND_LONGER; |
4702 | if (mips_opts.warn_about_macros) | |
4703 | subtype |= RELAX_NOMACRO; | |
4704 | if (mips_macro_warning.delay_slot_p) | |
4705 | subtype |= RELAX_DELAY_SLOT; | |
df58fc94 | 4706 | } |
584892a6 | 4707 | |
df58fc94 RS |
4708 | /* If both alternatives fail to fill a delay slot correctly, |
4709 | emit the warning now. */ | |
4710 | if ((subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0 | |
4711 | && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0) | |
4712 | { | |
4713 | relax_substateT s; | |
4714 | const char *msg; | |
4715 | ||
4716 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
4717 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
4718 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
4719 | msg = macro_warning (s); | |
4720 | if (msg != NULL) | |
4721 | as_warn ("%s", msg); | |
4722 | subtype &= ~s; | |
4723 | } | |
4724 | ||
4725 | /* If both implementations are longer than 1 instruction, then emit the | |
4726 | warning now. */ | |
4727 | if (mips_macro_warning.insns[0] > 1 && mips_macro_warning.insns[1] > 1) | |
4728 | { | |
4729 | relax_substateT s; | |
4730 | const char *msg; | |
4731 | ||
4732 | s = subtype & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT); | |
4733 | msg = macro_warning (s); | |
4734 | if (msg != NULL) | |
4735 | as_warn ("%s", msg); | |
4736 | subtype &= ~s; | |
584892a6 | 4737 | } |
df58fc94 RS |
4738 | |
4739 | /* If any flags still set, then one implementation might need a warning | |
4740 | and the other either will need one of a different kind or none at all. | |
4741 | Pass any remaining flags over to relaxation. */ | |
4742 | if (mips_macro_warning.first_frag != NULL) | |
4743 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
584892a6 RS |
4744 | } |
4745 | ||
df58fc94 RS |
4746 | /* Instruction operand formats used in macros that vary between |
4747 | standard MIPS and microMIPS code. */ | |
4748 | ||
4749 | static const char * const brk_fmt[2] = { "c", "mF" }; | |
4750 | static const char * const cop12_fmt[2] = { "E,o(b)", "E,~(b)" }; | |
4751 | static const char * const jalr_fmt[2] = { "d,s", "t,s" }; | |
4752 | static const char * const lui_fmt[2] = { "t,u", "s,u" }; | |
4753 | static const char * const mem12_fmt[2] = { "t,o(b)", "t,~(b)" }; | |
4754 | static const char * const mfhl_fmt[2] = { "d", "mj" }; | |
4755 | static const char * const shft_fmt[2] = { "d,w,<", "t,r,<" }; | |
4756 | static const char * const trap_fmt[2] = { "s,t,q", "s,t,|" }; | |
4757 | ||
4758 | #define BRK_FMT (brk_fmt[mips_opts.micromips]) | |
4759 | #define COP12_FMT (cop12_fmt[mips_opts.micromips]) | |
4760 | #define JALR_FMT (jalr_fmt[mips_opts.micromips]) | |
4761 | #define LUI_FMT (lui_fmt[mips_opts.micromips]) | |
4762 | #define MEM12_FMT (mem12_fmt[mips_opts.micromips]) | |
4763 | #define MFHL_FMT (mfhl_fmt[mips_opts.micromips]) | |
4764 | #define SHFT_FMT (shft_fmt[mips_opts.micromips]) | |
4765 | #define TRAP_FMT (trap_fmt[mips_opts.micromips]) | |
4766 | ||
6e1304d8 RS |
4767 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
4768 | The first argument in *ARGS will be either the code for a single | |
4769 | relocation or -1 followed by the three codes that make up a | |
4770 | composite relocation. */ | |
4771 | ||
4772 | static void | |
4773 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
4774 | { | |
4775 | int i, next; | |
4776 | ||
4777 | next = va_arg (*args, int); | |
4778 | if (next >= 0) | |
4779 | r[0] = (bfd_reloc_code_real_type) next; | |
4780 | else | |
4781 | for (i = 0; i < 3; i++) | |
4782 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
4783 | } | |
4784 | ||
252b5132 RH |
4785 | /* Build an instruction created by a macro expansion. This is passed |
4786 | a pointer to the count of instructions created so far, an | |
4787 | expression, the name of the instruction to build, an operand format | |
4788 | string, and corresponding arguments. */ | |
4789 | ||
252b5132 | 4790 | static void |
67c0d1eb | 4791 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 4792 | { |
df58fc94 | 4793 | const struct mips_opcode *mo = NULL; |
f6688943 | 4794 | bfd_reloc_code_real_type r[3]; |
df58fc94 RS |
4795 | const struct mips_opcode *amo; |
4796 | struct hash_control *hash; | |
4797 | struct mips_cl_insn insn; | |
252b5132 | 4798 | va_list args; |
252b5132 | 4799 | |
252b5132 | 4800 | va_start (args, fmt); |
252b5132 | 4801 | |
252b5132 RH |
4802 | if (mips_opts.mips16) |
4803 | { | |
03ea81db | 4804 | mips16_macro_build (ep, name, fmt, &args); |
252b5132 RH |
4805 | va_end (args); |
4806 | return; | |
4807 | } | |
4808 | ||
f6688943 TS |
4809 | r[0] = BFD_RELOC_UNUSED; |
4810 | r[1] = BFD_RELOC_UNUSED; | |
4811 | r[2] = BFD_RELOC_UNUSED; | |
df58fc94 RS |
4812 | hash = mips_opts.micromips ? micromips_op_hash : op_hash; |
4813 | amo = (struct mips_opcode *) hash_find (hash, name); | |
4814 | gas_assert (amo); | |
4815 | gas_assert (strcmp (name, amo->name) == 0); | |
1e915849 | 4816 | |
df58fc94 | 4817 | do |
8b082fb1 TS |
4818 | { |
4819 | /* Search until we get a match for NAME. It is assumed here that | |
df58fc94 RS |
4820 | macros will never generate MDMX, MIPS-3D, or MT instructions. |
4821 | We try to match an instruction that fulfils the branch delay | |
4822 | slot instruction length requirement (if any) of the previous | |
4823 | instruction. While doing this we record the first instruction | |
4824 | seen that matches all the other conditions and use it anyway | |
4825 | if the requirement cannot be met; we will issue an appropriate | |
4826 | warning later on. */ | |
4827 | if (strcmp (fmt, amo->args) == 0 | |
4828 | && amo->pinfo != INSN_MACRO | |
4829 | && is_opcode_valid (amo) | |
4830 | && is_size_valid (amo)) | |
4831 | { | |
4832 | if (is_delay_slot_valid (amo)) | |
4833 | { | |
4834 | mo = amo; | |
4835 | break; | |
4836 | } | |
4837 | else if (!mo) | |
4838 | mo = amo; | |
4839 | } | |
8b082fb1 | 4840 | |
df58fc94 RS |
4841 | ++amo; |
4842 | gas_assert (amo->name); | |
252b5132 | 4843 | } |
df58fc94 | 4844 | while (strcmp (name, amo->name) == 0); |
252b5132 | 4845 | |
df58fc94 | 4846 | gas_assert (mo); |
1e915849 | 4847 | create_insn (&insn, mo); |
252b5132 RH |
4848 | for (;;) |
4849 | { | |
4850 | switch (*fmt++) | |
4851 | { | |
4852 | case '\0': | |
4853 | break; | |
4854 | ||
4855 | case ',': | |
4856 | case '(': | |
4857 | case ')': | |
4858 | continue; | |
4859 | ||
5f74bc13 CD |
4860 | case '+': |
4861 | switch (*fmt++) | |
4862 | { | |
4863 | case 'A': | |
4864 | case 'E': | |
df58fc94 RS |
4865 | INSERT_OPERAND (mips_opts.micromips, |
4866 | EXTLSB, insn, va_arg (args, int)); | |
5f74bc13 CD |
4867 | continue; |
4868 | ||
4869 | case 'B': | |
4870 | case 'F': | |
4871 | /* Note that in the macro case, these arguments are already | |
4872 | in MSB form. (When handling the instruction in the | |
4873 | non-macro case, these arguments are sizes from which | |
4874 | MSB values must be calculated.) */ | |
df58fc94 RS |
4875 | INSERT_OPERAND (mips_opts.micromips, |
4876 | INSMSB, insn, va_arg (args, int)); | |
5f74bc13 CD |
4877 | continue; |
4878 | ||
4879 | case 'C': | |
4880 | case 'G': | |
4881 | case 'H': | |
4882 | /* Note that in the macro case, these arguments are already | |
4883 | in MSBD form. (When handling the instruction in the | |
4884 | non-macro case, these arguments are sizes from which | |
4885 | MSBD values must be calculated.) */ | |
df58fc94 RS |
4886 | INSERT_OPERAND (mips_opts.micromips, |
4887 | EXTMSBD, insn, va_arg (args, int)); | |
5f74bc13 CD |
4888 | continue; |
4889 | ||
dd3cbb7e | 4890 | case 'Q': |
df58fc94 RS |
4891 | gas_assert (!mips_opts.micromips); |
4892 | INSERT_OPERAND (0, SEQI, insn, va_arg (args, int)); | |
dd3cbb7e NC |
4893 | continue; |
4894 | ||
5f74bc13 CD |
4895 | default: |
4896 | internalError (); | |
4897 | } | |
4898 | continue; | |
4899 | ||
8b082fb1 | 4900 | case '2': |
df58fc94 RS |
4901 | gas_assert (!mips_opts.micromips); |
4902 | INSERT_OPERAND (0, BP, insn, va_arg (args, int)); | |
8b082fb1 TS |
4903 | continue; |
4904 | ||
df58fc94 RS |
4905 | case 'n': |
4906 | gas_assert (mips_opts.micromips); | |
252b5132 RH |
4907 | case 't': |
4908 | case 'w': | |
4909 | case 'E': | |
df58fc94 | 4910 | INSERT_OPERAND (mips_opts.micromips, RT, insn, va_arg (args, int)); |
252b5132 RH |
4911 | continue; |
4912 | ||
4913 | case 'c': | |
df58fc94 RS |
4914 | gas_assert (!mips_opts.micromips); |
4915 | INSERT_OPERAND (0, CODE, insn, va_arg (args, int)); | |
38487616 TS |
4916 | continue; |
4917 | ||
252b5132 | 4918 | case 'W': |
df58fc94 RS |
4919 | gas_assert (!mips_opts.micromips); |
4920 | case 'T': | |
4921 | INSERT_OPERAND (mips_opts.micromips, FT, insn, va_arg (args, int)); | |
252b5132 RH |
4922 | continue; |
4923 | ||
252b5132 | 4924 | case 'G': |
df58fc94 RS |
4925 | if (mips_opts.micromips) |
4926 | INSERT_OPERAND (1, RS, insn, va_arg (args, int)); | |
4927 | else | |
4928 | INSERT_OPERAND (0, RD, insn, va_arg (args, int)); | |
4929 | continue; | |
4930 | ||
af7ee8bf | 4931 | case 'K': |
df58fc94 RS |
4932 | gas_assert (!mips_opts.micromips); |
4933 | case 'd': | |
4934 | INSERT_OPERAND (mips_opts.micromips, RD, insn, va_arg (args, int)); | |
252b5132 RH |
4935 | continue; |
4936 | ||
4372b673 | 4937 | case 'U': |
df58fc94 | 4938 | gas_assert (!mips_opts.micromips); |
4372b673 NC |
4939 | { |
4940 | int tmp = va_arg (args, int); | |
4941 | ||
df58fc94 RS |
4942 | INSERT_OPERAND (0, RT, insn, tmp); |
4943 | INSERT_OPERAND (0, RD, insn, tmp); | |
4372b673 | 4944 | } |
df58fc94 | 4945 | continue; |
4372b673 | 4946 | |
252b5132 RH |
4947 | case 'V': |
4948 | case 'S': | |
df58fc94 RS |
4949 | gas_assert (!mips_opts.micromips); |
4950 | INSERT_OPERAND (0, FS, insn, va_arg (args, int)); | |
252b5132 RH |
4951 | continue; |
4952 | ||
4953 | case 'z': | |
4954 | continue; | |
4955 | ||
4956 | case '<': | |
df58fc94 RS |
4957 | INSERT_OPERAND (mips_opts.micromips, |
4958 | SHAMT, insn, va_arg (args, int)); | |
252b5132 RH |
4959 | continue; |
4960 | ||
4961 | case 'D': | |
df58fc94 RS |
4962 | gas_assert (!mips_opts.micromips); |
4963 | INSERT_OPERAND (0, FD, insn, va_arg (args, int)); | |
252b5132 RH |
4964 | continue; |
4965 | ||
4966 | case 'B': | |
df58fc94 RS |
4967 | gas_assert (!mips_opts.micromips); |
4968 | INSERT_OPERAND (0, CODE20, insn, va_arg (args, int)); | |
252b5132 RH |
4969 | continue; |
4970 | ||
4372b673 | 4971 | case 'J': |
df58fc94 RS |
4972 | gas_assert (!mips_opts.micromips); |
4973 | INSERT_OPERAND (0, CODE19, insn, va_arg (args, int)); | |
4372b673 NC |
4974 | continue; |
4975 | ||
252b5132 | 4976 | case 'q': |
df58fc94 RS |
4977 | gas_assert (!mips_opts.micromips); |
4978 | INSERT_OPERAND (0, CODE2, insn, va_arg (args, int)); | |
252b5132 RH |
4979 | continue; |
4980 | ||
4981 | case 'b': | |
4982 | case 's': | |
4983 | case 'r': | |
4984 | case 'v': | |
df58fc94 | 4985 | INSERT_OPERAND (mips_opts.micromips, RS, insn, va_arg (args, int)); |
252b5132 RH |
4986 | continue; |
4987 | ||
4988 | case 'i': | |
4989 | case 'j': | |
6e1304d8 | 4990 | macro_read_relocs (&args, r); |
9c2799c2 | 4991 | gas_assert (*r == BFD_RELOC_GPREL16 |
e391c024 RS |
4992 | || *r == BFD_RELOC_MIPS_HIGHER |
4993 | || *r == BFD_RELOC_HI16_S | |
4994 | || *r == BFD_RELOC_LO16 | |
4995 | || *r == BFD_RELOC_MIPS_GOT_OFST); | |
4996 | continue; | |
4997 | ||
4998 | case 'o': | |
4999 | macro_read_relocs (&args, r); | |
252b5132 RH |
5000 | continue; |
5001 | ||
5002 | case 'u': | |
6e1304d8 | 5003 | macro_read_relocs (&args, r); |
9c2799c2 | 5004 | gas_assert (ep != NULL |
90ecf173 MR |
5005 | && (ep->X_op == O_constant |
5006 | || (ep->X_op == O_symbol | |
5007 | && (*r == BFD_RELOC_MIPS_HIGHEST | |
5008 | || *r == BFD_RELOC_HI16_S | |
5009 | || *r == BFD_RELOC_HI16 | |
5010 | || *r == BFD_RELOC_GPREL16 | |
5011 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
5012 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); | |
252b5132 RH |
5013 | continue; |
5014 | ||
5015 | case 'p': | |
9c2799c2 | 5016 | gas_assert (ep != NULL); |
bad36eac | 5017 | |
252b5132 RH |
5018 | /* |
5019 | * This allows macro() to pass an immediate expression for | |
5020 | * creating short branches without creating a symbol. | |
bad36eac DJ |
5021 | * |
5022 | * We don't allow branch relaxation for these branches, as | |
5023 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
5024 | */ |
5025 | if (ep->X_op == O_constant) | |
5026 | { | |
df58fc94 RS |
5027 | /* For microMIPS we always use relocations for branches. |
5028 | So we should not resolve immediate values. */ | |
5029 | gas_assert (!mips_opts.micromips); | |
5030 | ||
bad36eac DJ |
5031 | if ((ep->X_add_number & 3) != 0) |
5032 | as_bad (_("branch to misaligned address (0x%lx)"), | |
5033 | (unsigned long) ep->X_add_number); | |
5034 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
5035 | as_bad (_("branch address range overflow (0x%lx)"), | |
5036 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
5037 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
5038 | ep = NULL; | |
5039 | } | |
5040 | else | |
0b25d3e6 | 5041 | *r = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
5042 | continue; |
5043 | ||
5044 | case 'a': | |
9c2799c2 | 5045 | gas_assert (ep != NULL); |
f6688943 | 5046 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
5047 | continue; |
5048 | ||
5049 | case 'C': | |
df58fc94 RS |
5050 | gas_assert (!mips_opts.micromips); |
5051 | INSERT_OPERAND (0, COPZ, insn, va_arg (args, unsigned long)); | |
252b5132 RH |
5052 | continue; |
5053 | ||
d43b4baf | 5054 | case 'k': |
df58fc94 RS |
5055 | INSERT_OPERAND (mips_opts.micromips, |
5056 | CACHE, insn, va_arg (args, unsigned long)); | |
5057 | continue; | |
5058 | ||
5059 | case '|': | |
5060 | gas_assert (mips_opts.micromips); | |
5061 | INSERT_OPERAND (1, TRAP, insn, va_arg (args, int)); | |
5062 | continue; | |
5063 | ||
5064 | case '.': | |
5065 | gas_assert (mips_opts.micromips); | |
5066 | INSERT_OPERAND (1, OFFSET10, insn, va_arg (args, int)); | |
5067 | continue; | |
5068 | ||
dec0624d MR |
5069 | case '\\': |
5070 | INSERT_OPERAND (mips_opts.micromips, | |
5071 | 3BITPOS, insn, va_arg (args, unsigned int)); | |
5072 | continue; | |
5073 | ||
df58fc94 | 5074 | case '~': |
dec0624d MR |
5075 | INSERT_OPERAND (mips_opts.micromips, |
5076 | OFFSET12, insn, va_arg (args, unsigned long)); | |
df58fc94 RS |
5077 | continue; |
5078 | ||
5079 | case 'N': | |
5080 | gas_assert (mips_opts.micromips); | |
5081 | INSERT_OPERAND (1, BCC, insn, va_arg (args, int)); | |
5082 | continue; | |
5083 | ||
5084 | case 'm': /* Opcode extension character. */ | |
5085 | gas_assert (mips_opts.micromips); | |
5086 | switch (*fmt++) | |
5087 | { | |
5088 | case 'j': | |
5089 | INSERT_OPERAND (1, MJ, insn, va_arg (args, int)); | |
5090 | break; | |
5091 | ||
5092 | case 'p': | |
5093 | INSERT_OPERAND (1, MP, insn, va_arg (args, int)); | |
5094 | break; | |
5095 | ||
5096 | case 'F': | |
5097 | INSERT_OPERAND (1, IMMF, insn, va_arg (args, int)); | |
5098 | break; | |
5099 | ||
5100 | default: | |
5101 | internalError (); | |
5102 | } | |
d43b4baf TS |
5103 | continue; |
5104 | ||
252b5132 RH |
5105 | default: |
5106 | internalError (); | |
5107 | } | |
5108 | break; | |
5109 | } | |
5110 | va_end (args); | |
9c2799c2 | 5111 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 5112 | |
df58fc94 | 5113 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
5114 | } |
5115 | ||
5116 | static void | |
67c0d1eb | 5117 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
03ea81db | 5118 | va_list *args) |
252b5132 | 5119 | { |
1e915849 | 5120 | struct mips_opcode *mo; |
252b5132 | 5121 | struct mips_cl_insn insn; |
f6688943 TS |
5122 | bfd_reloc_code_real_type r[3] |
5123 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 5124 | |
1e915849 | 5125 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
9c2799c2 NC |
5126 | gas_assert (mo); |
5127 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 | 5128 | |
1e915849 | 5129 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 5130 | { |
1e915849 | 5131 | ++mo; |
9c2799c2 NC |
5132 | gas_assert (mo->name); |
5133 | gas_assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
5134 | } |
5135 | ||
1e915849 | 5136 | create_insn (&insn, mo); |
252b5132 RH |
5137 | for (;;) |
5138 | { | |
5139 | int c; | |
5140 | ||
5141 | c = *fmt++; | |
5142 | switch (c) | |
5143 | { | |
5144 | case '\0': | |
5145 | break; | |
5146 | ||
5147 | case ',': | |
5148 | case '(': | |
5149 | case ')': | |
5150 | continue; | |
5151 | ||
5152 | case 'y': | |
5153 | case 'w': | |
03ea81db | 5154 | MIPS16_INSERT_OPERAND (RY, insn, va_arg (*args, int)); |
252b5132 RH |
5155 | continue; |
5156 | ||
5157 | case 'x': | |
5158 | case 'v': | |
03ea81db | 5159 | MIPS16_INSERT_OPERAND (RX, insn, va_arg (*args, int)); |
252b5132 RH |
5160 | continue; |
5161 | ||
5162 | case 'z': | |
03ea81db | 5163 | MIPS16_INSERT_OPERAND (RZ, insn, va_arg (*args, int)); |
252b5132 RH |
5164 | continue; |
5165 | ||
5166 | case 'Z': | |
03ea81db | 5167 | MIPS16_INSERT_OPERAND (MOVE32Z, insn, va_arg (*args, int)); |
252b5132 RH |
5168 | continue; |
5169 | ||
5170 | case '0': | |
5171 | case 'S': | |
5172 | case 'P': | |
5173 | case 'R': | |
5174 | continue; | |
5175 | ||
5176 | case 'X': | |
03ea81db | 5177 | MIPS16_INSERT_OPERAND (REGR32, insn, va_arg (*args, int)); |
252b5132 RH |
5178 | continue; |
5179 | ||
5180 | case 'Y': | |
5181 | { | |
5182 | int regno; | |
5183 | ||
03ea81db | 5184 | regno = va_arg (*args, int); |
252b5132 | 5185 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); |
a9e24354 | 5186 | MIPS16_INSERT_OPERAND (REG32R, insn, regno); |
252b5132 RH |
5187 | } |
5188 | continue; | |
5189 | ||
5190 | case '<': | |
5191 | case '>': | |
5192 | case '4': | |
5193 | case '5': | |
5194 | case 'H': | |
5195 | case 'W': | |
5196 | case 'D': | |
5197 | case 'j': | |
5198 | case '8': | |
5199 | case 'V': | |
5200 | case 'C': | |
5201 | case 'U': | |
5202 | case 'k': | |
5203 | case 'K': | |
5204 | case 'p': | |
5205 | case 'q': | |
5206 | { | |
9c2799c2 | 5207 | gas_assert (ep != NULL); |
252b5132 RH |
5208 | |
5209 | if (ep->X_op != O_constant) | |
874e8986 | 5210 | *r = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
5211 | else |
5212 | { | |
b34976b6 AM |
5213 | mips16_immed (NULL, 0, c, ep->X_add_number, FALSE, FALSE, |
5214 | FALSE, &insn.insn_opcode, &insn.use_extend, | |
c4e7957c | 5215 | &insn.extend); |
252b5132 | 5216 | ep = NULL; |
f6688943 | 5217 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
5218 | } |
5219 | } | |
5220 | continue; | |
5221 | ||
5222 | case '6': | |
03ea81db | 5223 | MIPS16_INSERT_OPERAND (IMM6, insn, va_arg (*args, int)); |
252b5132 RH |
5224 | continue; |
5225 | } | |
5226 | ||
5227 | break; | |
5228 | } | |
5229 | ||
9c2799c2 | 5230 | gas_assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 5231 | |
df58fc94 | 5232 | append_insn (&insn, ep, r, TRUE); |
252b5132 RH |
5233 | } |
5234 | ||
2051e8c4 MR |
5235 | /* |
5236 | * Sign-extend 32-bit mode constants that have bit 31 set and all | |
5237 | * higher bits unset. | |
5238 | */ | |
9f872bbe | 5239 | static void |
2051e8c4 MR |
5240 | normalize_constant_expr (expressionS *ex) |
5241 | { | |
9ee2a2d4 | 5242 | if (ex->X_op == O_constant |
2051e8c4 MR |
5243 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) |
5244 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
5245 | - 0x80000000); | |
5246 | } | |
5247 | ||
5248 | /* | |
5249 | * Sign-extend 32-bit mode address offsets that have bit 31 set and | |
5250 | * all higher bits unset. | |
5251 | */ | |
5252 | static void | |
5253 | normalize_address_expr (expressionS *ex) | |
5254 | { | |
5255 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
5256 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
5257 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
5258 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
5259 | - 0x80000000); | |
5260 | } | |
5261 | ||
438c16b8 TS |
5262 | /* |
5263 | * Generate a "jalr" instruction with a relocation hint to the called | |
5264 | * function. This occurs in NewABI PIC code. | |
5265 | */ | |
5266 | static void | |
df58fc94 | 5267 | macro_build_jalr (expressionS *ep, int cprestore) |
438c16b8 | 5268 | { |
df58fc94 RS |
5269 | static const bfd_reloc_code_real_type jalr_relocs[2] |
5270 | = { BFD_RELOC_MIPS_JALR, BFD_RELOC_MICROMIPS_JALR }; | |
5271 | bfd_reloc_code_real_type jalr_reloc = jalr_relocs[mips_opts.micromips]; | |
5272 | const char *jalr; | |
685736be | 5273 | char *f = NULL; |
b34976b6 | 5274 | |
1180b5a4 | 5275 | if (MIPS_JALR_HINT_P (ep)) |
f21f8242 | 5276 | { |
cc3d92a5 | 5277 | frag_grow (8); |
f21f8242 AO |
5278 | f = frag_more (0); |
5279 | } | |
2906b037 | 5280 | if (mips_opts.micromips) |
df58fc94 RS |
5281 | { |
5282 | jalr = mips_opts.noreorder && !cprestore ? "jalr" : "jalrs"; | |
5283 | if (MIPS_JALR_HINT_P (ep)) | |
5284 | macro_build (NULL, jalr, "t,s", RA, PIC_CALL_REG); | |
5285 | else | |
5286 | macro_build (NULL, jalr, "mj", PIC_CALL_REG); | |
5287 | } | |
2906b037 MR |
5288 | else |
5289 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); | |
1180b5a4 | 5290 | if (MIPS_JALR_HINT_P (ep)) |
df58fc94 | 5291 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, ep, FALSE, jalr_reloc); |
438c16b8 TS |
5292 | } |
5293 | ||
252b5132 RH |
5294 | /* |
5295 | * Generate a "lui" instruction. | |
5296 | */ | |
5297 | static void | |
67c0d1eb | 5298 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 | 5299 | { |
9c2799c2 | 5300 | gas_assert (! mips_opts.mips16); |
252b5132 | 5301 | |
df58fc94 | 5302 | if (ep->X_op != O_constant) |
252b5132 | 5303 | { |
9c2799c2 | 5304 | gas_assert (ep->X_op == O_symbol); |
bbe506e8 TS |
5305 | /* _gp_disp is a special case, used from s_cpload. |
5306 | __gnu_local_gp is used if mips_no_shared. */ | |
9c2799c2 | 5307 | gas_assert (mips_pic == NO_PIC |
78e1bb40 | 5308 | || (! HAVE_NEWABI |
aa6975fb ILT |
5309 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
5310 | || (! mips_in_shared | |
bbe506e8 TS |
5311 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
5312 | "__gnu_local_gp") == 0)); | |
252b5132 RH |
5313 | } |
5314 | ||
df58fc94 | 5315 | macro_build (ep, "lui", LUI_FMT, regnum, BFD_RELOC_HI16_S); |
252b5132 RH |
5316 | } |
5317 | ||
885add95 CD |
5318 | /* Generate a sequence of instructions to do a load or store from a constant |
5319 | offset off of a base register (breg) into/from a target register (treg), | |
5320 | using AT if necessary. */ | |
5321 | static void | |
67c0d1eb RS |
5322 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
5323 | int treg, int breg, int dbl) | |
885add95 | 5324 | { |
9c2799c2 | 5325 | gas_assert (ep->X_op == O_constant); |
885add95 | 5326 | |
256ab948 | 5327 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
5328 | if (!dbl) |
5329 | normalize_constant_expr (ep); | |
256ab948 | 5330 | |
67c1ffbe | 5331 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 5332 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
5333 | as_warn (_("operand overflow")); |
5334 | ||
5335 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
5336 | { | |
5337 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 5338 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
5339 | } |
5340 | else | |
5341 | { | |
5342 | /* 32-bit offset, need multiple instructions and AT, like: | |
5343 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
5344 | addu $tempreg,$tempreg,$breg | |
5345 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
5346 | to handle the complete offset. */ | |
67c0d1eb RS |
5347 | macro_build_lui (ep, AT); |
5348 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
5349 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 | 5350 | |
741fe287 | 5351 | if (!mips_opts.at) |
8fc2e39e | 5352 | as_bad (_("Macro used $at after \".set noat\"")); |
885add95 CD |
5353 | } |
5354 | } | |
5355 | ||
252b5132 RH |
5356 | /* set_at() |
5357 | * Generates code to set the $at register to true (one) | |
5358 | * if reg is less than the immediate expression. | |
5359 | */ | |
5360 | static void | |
67c0d1eb | 5361 | set_at (int reg, int unsignedp) |
252b5132 RH |
5362 | { |
5363 | if (imm_expr.X_op == O_constant | |
5364 | && imm_expr.X_add_number >= -0x8000 | |
5365 | && imm_expr.X_add_number < 0x8000) | |
67c0d1eb RS |
5366 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
5367 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
5368 | else |
5369 | { | |
67c0d1eb RS |
5370 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
5371 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); | |
252b5132 RH |
5372 | } |
5373 | } | |
5374 | ||
5375 | /* Warn if an expression is not a constant. */ | |
5376 | ||
5377 | static void | |
17a2f251 | 5378 | check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex) |
252b5132 RH |
5379 | { |
5380 | if (ex->X_op == O_big) | |
5381 | as_bad (_("unsupported large constant")); | |
5382 | else if (ex->X_op != O_constant) | |
9ee2a2d4 MR |
5383 | as_bad (_("Instruction %s requires absolute expression"), |
5384 | ip->insn_mo->name); | |
13757d0c | 5385 | |
9ee2a2d4 MR |
5386 | if (HAVE_32BIT_GPRS) |
5387 | normalize_constant_expr (ex); | |
252b5132 RH |
5388 | } |
5389 | ||
5390 | /* Count the leading zeroes by performing a binary chop. This is a | |
5391 | bulky bit of source, but performance is a LOT better for the | |
5392 | majority of values than a simple loop to count the bits: | |
5393 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
5394 | if ((v) & (1 << (31 - lcnt))) | |
5395 | break; | |
5396 | However it is not code size friendly, and the gain will drop a bit | |
5397 | on certain cached systems. | |
5398 | */ | |
5399 | #define COUNT_TOP_ZEROES(v) \ | |
5400 | (((v) & ~0xffff) == 0 \ | |
5401 | ? ((v) & ~0xff) == 0 \ | |
5402 | ? ((v) & ~0xf) == 0 \ | |
5403 | ? ((v) & ~0x3) == 0 \ | |
5404 | ? ((v) & ~0x1) == 0 \ | |
5405 | ? !(v) \ | |
5406 | ? 32 \ | |
5407 | : 31 \ | |
5408 | : 30 \ | |
5409 | : ((v) & ~0x7) == 0 \ | |
5410 | ? 29 \ | |
5411 | : 28 \ | |
5412 | : ((v) & ~0x3f) == 0 \ | |
5413 | ? ((v) & ~0x1f) == 0 \ | |
5414 | ? 27 \ | |
5415 | : 26 \ | |
5416 | : ((v) & ~0x7f) == 0 \ | |
5417 | ? 25 \ | |
5418 | : 24 \ | |
5419 | : ((v) & ~0xfff) == 0 \ | |
5420 | ? ((v) & ~0x3ff) == 0 \ | |
5421 | ? ((v) & ~0x1ff) == 0 \ | |
5422 | ? 23 \ | |
5423 | : 22 \ | |
5424 | : ((v) & ~0x7ff) == 0 \ | |
5425 | ? 21 \ | |
5426 | : 20 \ | |
5427 | : ((v) & ~0x3fff) == 0 \ | |
5428 | ? ((v) & ~0x1fff) == 0 \ | |
5429 | ? 19 \ | |
5430 | : 18 \ | |
5431 | : ((v) & ~0x7fff) == 0 \ | |
5432 | ? 17 \ | |
5433 | : 16 \ | |
5434 | : ((v) & ~0xffffff) == 0 \ | |
5435 | ? ((v) & ~0xfffff) == 0 \ | |
5436 | ? ((v) & ~0x3ffff) == 0 \ | |
5437 | ? ((v) & ~0x1ffff) == 0 \ | |
5438 | ? 15 \ | |
5439 | : 14 \ | |
5440 | : ((v) & ~0x7ffff) == 0 \ | |
5441 | ? 13 \ | |
5442 | : 12 \ | |
5443 | : ((v) & ~0x3fffff) == 0 \ | |
5444 | ? ((v) & ~0x1fffff) == 0 \ | |
5445 | ? 11 \ | |
5446 | : 10 \ | |
5447 | : ((v) & ~0x7fffff) == 0 \ | |
5448 | ? 9 \ | |
5449 | : 8 \ | |
5450 | : ((v) & ~0xfffffff) == 0 \ | |
5451 | ? ((v) & ~0x3ffffff) == 0 \ | |
5452 | ? ((v) & ~0x1ffffff) == 0 \ | |
5453 | ? 7 \ | |
5454 | : 6 \ | |
5455 | : ((v) & ~0x7ffffff) == 0 \ | |
5456 | ? 5 \ | |
5457 | : 4 \ | |
5458 | : ((v) & ~0x3fffffff) == 0 \ | |
5459 | ? ((v) & ~0x1fffffff) == 0 \ | |
5460 | ? 3 \ | |
5461 | : 2 \ | |
5462 | : ((v) & ~0x7fffffff) == 0 \ | |
5463 | ? 1 \ | |
5464 | : 0) | |
5465 | ||
5466 | /* load_register() | |
67c1ffbe | 5467 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
5468 | * an absolute expression value into a register. |
5469 | */ | |
5470 | static void | |
67c0d1eb | 5471 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
5472 | { |
5473 | int freg; | |
5474 | expressionS hi32, lo32; | |
5475 | ||
5476 | if (ep->X_op != O_big) | |
5477 | { | |
9c2799c2 | 5478 | gas_assert (ep->X_op == O_constant); |
256ab948 TS |
5479 | |
5480 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
5481 | if (!dbl) |
5482 | normalize_constant_expr (ep); | |
256ab948 TS |
5483 | |
5484 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
5485 | { |
5486 | /* We can handle 16 bit signed values with an addiu to | |
5487 | $zero. No need to ever use daddiu here, since $zero and | |
5488 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 5489 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5490 | return; |
5491 | } | |
5492 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
5493 | { | |
5494 | /* We can handle 16 bit unsigned values with an ori to | |
5495 | $zero. */ | |
67c0d1eb | 5496 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5497 | return; |
5498 | } | |
256ab948 | 5499 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
5500 | { |
5501 | /* 32 bit values require an lui. */ | |
df58fc94 | 5502 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 5503 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 5504 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
5505 | return; |
5506 | } | |
5507 | } | |
5508 | ||
5509 | /* The value is larger than 32 bits. */ | |
5510 | ||
2051e8c4 | 5511 | if (!dbl || HAVE_32BIT_GPRS) |
252b5132 | 5512 | { |
55e08f71 NC |
5513 | char value[32]; |
5514 | ||
5515 | sprintf_vma (value, ep->X_add_number); | |
20e1fcfd | 5516 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 5517 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
5518 | return; |
5519 | } | |
5520 | ||
5521 | if (ep->X_op != O_big) | |
5522 | { | |
5523 | hi32 = *ep; | |
5524 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
5525 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
5526 | hi32.X_add_number &= 0xffffffff; | |
5527 | lo32 = *ep; | |
5528 | lo32.X_add_number &= 0xffffffff; | |
5529 | } | |
5530 | else | |
5531 | { | |
9c2799c2 | 5532 | gas_assert (ep->X_add_number > 2); |
252b5132 RH |
5533 | if (ep->X_add_number == 3) |
5534 | generic_bignum[3] = 0; | |
5535 | else if (ep->X_add_number > 4) | |
5536 | as_bad (_("Number larger than 64 bits")); | |
5537 | lo32.X_op = O_constant; | |
5538 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
5539 | hi32.X_op = O_constant; | |
5540 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
5541 | } | |
5542 | ||
5543 | if (hi32.X_add_number == 0) | |
5544 | freg = 0; | |
5545 | else | |
5546 | { | |
5547 | int shift, bit; | |
5548 | unsigned long hi, lo; | |
5549 | ||
956cd1d6 | 5550 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
5551 | { |
5552 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
5553 | { | |
67c0d1eb | 5554 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
5555 | return; |
5556 | } | |
5557 | if (lo32.X_add_number & 0x80000000) | |
5558 | { | |
df58fc94 | 5559 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
252b5132 | 5560 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 5561 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
5562 | return; |
5563 | } | |
5564 | } | |
252b5132 RH |
5565 | |
5566 | /* Check for 16bit shifted constant. We know that hi32 is | |
5567 | non-zero, so start the mask on the first bit of the hi32 | |
5568 | value. */ | |
5569 | shift = 17; | |
5570 | do | |
beae10d5 KH |
5571 | { |
5572 | unsigned long himask, lomask; | |
5573 | ||
5574 | if (shift < 32) | |
5575 | { | |
5576 | himask = 0xffff >> (32 - shift); | |
5577 | lomask = (0xffff << shift) & 0xffffffff; | |
5578 | } | |
5579 | else | |
5580 | { | |
5581 | himask = 0xffff << (shift - 32); | |
5582 | lomask = 0; | |
5583 | } | |
5584 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
5585 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
5586 | { | |
5587 | expressionS tmp; | |
5588 | ||
5589 | tmp.X_op = O_constant; | |
5590 | if (shift < 32) | |
5591 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
5592 | | (lo32.X_add_number >> shift)); | |
5593 | else | |
5594 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb | 5595 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
df58fc94 | 5596 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 5597 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
5598 | return; |
5599 | } | |
f9419b05 | 5600 | ++shift; |
beae10d5 KH |
5601 | } |
5602 | while (shift <= (64 - 16)); | |
252b5132 RH |
5603 | |
5604 | /* Find the bit number of the lowest one bit, and store the | |
5605 | shifted value in hi/lo. */ | |
5606 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
5607 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
5608 | if (lo != 0) | |
5609 | { | |
5610 | bit = 0; | |
5611 | while ((lo & 1) == 0) | |
5612 | { | |
5613 | lo >>= 1; | |
5614 | ++bit; | |
5615 | } | |
5616 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
5617 | hi >>= bit; | |
5618 | } | |
5619 | else | |
5620 | { | |
5621 | bit = 32; | |
5622 | while ((hi & 1) == 0) | |
5623 | { | |
5624 | hi >>= 1; | |
5625 | ++bit; | |
5626 | } | |
5627 | lo = hi; | |
5628 | hi = 0; | |
5629 | } | |
5630 | ||
5631 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
5632 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
5633 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
5634 | { |
5635 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 5636 | if (shift != 0) |
beae10d5 | 5637 | { |
252b5132 RH |
5638 | expressionS tmp; |
5639 | ||
5640 | /* This instruction will set the register to be all | |
5641 | ones. */ | |
beae10d5 KH |
5642 | tmp.X_op = O_constant; |
5643 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 5644 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
5645 | if (bit != 0) |
5646 | { | |
5647 | bit += shift; | |
df58fc94 | 5648 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", SHFT_FMT, |
67c0d1eb | 5649 | reg, reg, (bit >= 32) ? bit - 32 : bit); |
beae10d5 | 5650 | } |
df58fc94 | 5651 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", SHFT_FMT, |
67c0d1eb | 5652 | reg, reg, (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
5653 | return; |
5654 | } | |
5655 | } | |
252b5132 RH |
5656 | |
5657 | /* Sign extend hi32 before calling load_register, because we can | |
5658 | generally get better code when we load a sign extended value. */ | |
5659 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 5660 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 5661 | load_register (reg, &hi32, 0); |
252b5132 RH |
5662 | freg = reg; |
5663 | } | |
5664 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
5665 | { | |
5666 | if (freg != 0) | |
5667 | { | |
df58fc94 | 5668 | macro_build (NULL, "dsll32", SHFT_FMT, reg, freg, 0); |
252b5132 RH |
5669 | freg = reg; |
5670 | } | |
5671 | } | |
5672 | else | |
5673 | { | |
5674 | expressionS mid16; | |
5675 | ||
956cd1d6 | 5676 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 5677 | { |
df58fc94 RS |
5678 | macro_build (&lo32, "lui", LUI_FMT, reg, BFD_RELOC_HI16); |
5679 | macro_build (NULL, "dsrl32", SHFT_FMT, reg, reg, 0); | |
beae10d5 KH |
5680 | return; |
5681 | } | |
252b5132 RH |
5682 | |
5683 | if (freg != 0) | |
5684 | { | |
df58fc94 | 5685 | macro_build (NULL, "dsll", SHFT_FMT, reg, freg, 16); |
252b5132 RH |
5686 | freg = reg; |
5687 | } | |
5688 | mid16 = lo32; | |
5689 | mid16.X_add_number >>= 16; | |
67c0d1eb | 5690 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
df58fc94 | 5691 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
252b5132 RH |
5692 | freg = reg; |
5693 | } | |
5694 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 5695 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
5696 | } |
5697 | ||
269137b2 TS |
5698 | static inline void |
5699 | load_delay_nop (void) | |
5700 | { | |
5701 | if (!gpr_interlocks) | |
5702 | macro_build (NULL, "nop", ""); | |
5703 | } | |
5704 | ||
252b5132 RH |
5705 | /* Load an address into a register. */ |
5706 | ||
5707 | static void | |
67c0d1eb | 5708 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 5709 | { |
252b5132 RH |
5710 | if (ep->X_op != O_constant |
5711 | && ep->X_op != O_symbol) | |
5712 | { | |
5713 | as_bad (_("expression too complex")); | |
5714 | ep->X_op = O_constant; | |
5715 | } | |
5716 | ||
5717 | if (ep->X_op == O_constant) | |
5718 | { | |
67c0d1eb | 5719 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
5720 | return; |
5721 | } | |
5722 | ||
5723 | if (mips_pic == NO_PIC) | |
5724 | { | |
5725 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 5726 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
5727 | Otherwise we want |
5728 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
5729 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 5730 | If we have an addend, we always use the latter form. |
76b3015f | 5731 | |
d6bc6245 TS |
5732 | With 64bit address space and a usable $at we want |
5733 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5734 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5735 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5736 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
5737 | dsll32 $reg,0 | |
3a482fd5 | 5738 | daddu $reg,$reg,$at |
76b3015f | 5739 | |
c03099e6 | 5740 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
5741 | on superscalar processors. |
5742 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5743 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5744 | dsll $reg,16 | |
5745 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
5746 | dsll $reg,16 | |
5747 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
5748 | |
5749 | For GP relative symbols in 64bit address space we can use | |
5750 | the same sequence as in 32bit address space. */ | |
aed1a261 | 5751 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 5752 | { |
6caf9ef4 TS |
5753 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
5754 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
5755 | { | |
5756 | relax_start (ep->X_add_symbol); | |
5757 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
5758 | mips_gp_register, BFD_RELOC_GPREL16); | |
5759 | relax_switch (); | |
5760 | } | |
d6bc6245 | 5761 | |
741fe287 | 5762 | if (*used_at == 0 && mips_opts.at) |
d6bc6245 | 5763 | { |
df58fc94 RS |
5764 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
5765 | macro_build (ep, "lui", LUI_FMT, AT, BFD_RELOC_HI16_S); | |
67c0d1eb RS |
5766 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
5767 | BFD_RELOC_MIPS_HIGHER); | |
5768 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
df58fc94 | 5769 | macro_build (NULL, "dsll32", SHFT_FMT, reg, reg, 0); |
67c0d1eb | 5770 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); |
d6bc6245 TS |
5771 | *used_at = 1; |
5772 | } | |
5773 | else | |
5774 | { | |
df58fc94 | 5775 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb RS |
5776 | macro_build (ep, "daddiu", "t,r,j", reg, reg, |
5777 | BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 5778 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 5779 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); |
df58fc94 | 5780 | macro_build (NULL, "dsll", SHFT_FMT, reg, reg, 16); |
67c0d1eb | 5781 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); |
d6bc6245 | 5782 | } |
6caf9ef4 TS |
5783 | |
5784 | if (mips_relax.sequence) | |
5785 | relax_end (); | |
d6bc6245 | 5786 | } |
252b5132 RH |
5787 | else |
5788 | { | |
d6bc6245 | 5789 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 5790 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 5791 | { |
4d7206a2 | 5792 | relax_start (ep->X_add_symbol); |
67c0d1eb | 5793 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 5794 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 5795 | relax_switch (); |
d6bc6245 | 5796 | } |
67c0d1eb RS |
5797 | macro_build_lui (ep, reg); |
5798 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
5799 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
5800 | if (mips_relax.sequence) |
5801 | relax_end (); | |
d6bc6245 | 5802 | } |
252b5132 | 5803 | } |
0a44bf69 | 5804 | else if (!mips_big_got) |
252b5132 RH |
5805 | { |
5806 | expressionS ex; | |
5807 | ||
5808 | /* If this is a reference to an external symbol, we want | |
5809 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5810 | Otherwise we want | |
5811 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5812 | nop | |
5813 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
5814 | If there is a constant, it must be added in after. |
5815 | ||
ed6fb7bd | 5816 | If we have NewABI, we want |
f5040a92 AO |
5817 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
5818 | unless we're referencing a global symbol with a non-zero | |
5819 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
5820 | if (HAVE_NEWABI) |
5821 | { | |
f5040a92 AO |
5822 | if (ep->X_add_number) |
5823 | { | |
4d7206a2 | 5824 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 5825 | ep->X_add_number = 0; |
4d7206a2 | 5826 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
5827 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
5828 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5829 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
5830 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5831 | ex.X_op = O_constant; | |
67c0d1eb | 5832 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5833 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 5834 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 5835 | relax_switch (); |
f5040a92 | 5836 | } |
67c0d1eb | 5837 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5838 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
5839 | if (mips_relax.sequence) |
5840 | relax_end (); | |
ed6fb7bd SC |
5841 | } |
5842 | else | |
5843 | { | |
f5040a92 AO |
5844 | ex.X_add_number = ep->X_add_number; |
5845 | ep->X_add_number = 0; | |
67c0d1eb RS |
5846 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
5847 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 5848 | load_delay_nop (); |
4d7206a2 RS |
5849 | relax_start (ep->X_add_symbol); |
5850 | relax_switch (); | |
67c0d1eb | 5851 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 5852 | BFD_RELOC_LO16); |
4d7206a2 | 5853 | relax_end (); |
ed6fb7bd | 5854 | |
f5040a92 AO |
5855 | if (ex.X_add_number != 0) |
5856 | { | |
5857 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
5858 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5859 | ex.X_op = O_constant; | |
67c0d1eb | 5860 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5861 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 5862 | } |
252b5132 RH |
5863 | } |
5864 | } | |
0a44bf69 | 5865 | else if (mips_big_got) |
252b5132 RH |
5866 | { |
5867 | expressionS ex; | |
252b5132 RH |
5868 | |
5869 | /* This is the large GOT case. If this is a reference to an | |
5870 | external symbol, we want | |
5871 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5872 | addu $reg,$reg,$gp | |
5873 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
5874 | |
5875 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
5876 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
5877 | nop | |
5878 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 5879 | If there is a constant, it must be added in after. |
f5040a92 AO |
5880 | |
5881 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
5882 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
5883 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 5884 | */ |
438c16b8 TS |
5885 | if (HAVE_NEWABI) |
5886 | { | |
4d7206a2 | 5887 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 5888 | ep->X_add_number = 0; |
4d7206a2 | 5889 | relax_start (ep->X_add_symbol); |
df58fc94 | 5890 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
5891 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5892 | reg, reg, mips_gp_register); | |
5893 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
5894 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
5895 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
5896 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5897 | else if (ex.X_add_number) | |
5898 | { | |
5899 | ex.X_op = O_constant; | |
67c0d1eb RS |
5900 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5901 | BFD_RELOC_LO16); | |
f5040a92 AO |
5902 | } |
5903 | ||
5904 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 5905 | relax_switch (); |
67c0d1eb | 5906 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5907 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
5908 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5909 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 5910 | relax_end (); |
438c16b8 | 5911 | } |
252b5132 | 5912 | else |
438c16b8 | 5913 | { |
f5040a92 AO |
5914 | ex.X_add_number = ep->X_add_number; |
5915 | ep->X_add_number = 0; | |
4d7206a2 | 5916 | relax_start (ep->X_add_symbol); |
df58fc94 | 5917 | macro_build (ep, "lui", LUI_FMT, reg, BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
5918 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5919 | reg, reg, mips_gp_register); | |
5920 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
5921 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
5922 | relax_switch (); |
5923 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
5924 | { |
5925 | /* We need a nop before loading from $gp. This special | |
5926 | check is required because the lui which starts the main | |
5927 | instruction stream does not refer to $gp, and so will not | |
5928 | insert the nop which may be required. */ | |
67c0d1eb | 5929 | macro_build (NULL, "nop", ""); |
438c16b8 | 5930 | } |
67c0d1eb | 5931 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 5932 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 5933 | load_delay_nop (); |
67c0d1eb | 5934 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 5935 | BFD_RELOC_LO16); |
4d7206a2 | 5936 | relax_end (); |
438c16b8 | 5937 | |
f5040a92 AO |
5938 | if (ex.X_add_number != 0) |
5939 | { | |
5940 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
5941 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5942 | ex.X_op = O_constant; | |
67c0d1eb RS |
5943 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
5944 | BFD_RELOC_LO16); | |
f5040a92 | 5945 | } |
252b5132 RH |
5946 | } |
5947 | } | |
252b5132 RH |
5948 | else |
5949 | abort (); | |
8fc2e39e | 5950 | |
741fe287 | 5951 | if (!mips_opts.at && *used_at == 1) |
8fc2e39e | 5952 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
5953 | } |
5954 | ||
ea1fb5dc RS |
5955 | /* Move the contents of register SOURCE into register DEST. */ |
5956 | ||
5957 | static void | |
67c0d1eb | 5958 | move_register (int dest, int source) |
ea1fb5dc | 5959 | { |
df58fc94 RS |
5960 | /* Prefer to use a 16-bit microMIPS instruction unless the previous |
5961 | instruction specifically requires a 32-bit one. */ | |
5962 | if (mips_opts.micromips | |
5963 | && !(history[0].insn_mo->pinfo2 & INSN2_BRANCH_DELAY_32BIT)) | |
7951ca42 | 5964 | macro_build (NULL, "move", "mp,mj", dest, source); |
df58fc94 RS |
5965 | else |
5966 | macro_build (NULL, HAVE_32BIT_GPRS ? "addu" : "daddu", "d,v,t", | |
5967 | dest, source, 0); | |
ea1fb5dc RS |
5968 | } |
5969 | ||
4d7206a2 | 5970 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
5971 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
5972 | The two alternatives are: | |
4d7206a2 RS |
5973 | |
5974 | Global symbol Local sybmol | |
5975 | ------------- ------------ | |
5976 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
5977 | ... ... | |
5978 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
5979 | ||
5980 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
5981 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
5982 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
5983 | |
5984 | static void | |
67c0d1eb | 5985 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
5986 | { |
5987 | expressionS global; | |
5988 | ||
5989 | global = *local; | |
5990 | global.X_add_number = 0; | |
5991 | ||
5992 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
5993 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
5994 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 5995 | relax_switch (); |
67c0d1eb RS |
5996 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
5997 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
5998 | relax_end (); |
5999 | } | |
6000 | ||
6001 | static void | |
67c0d1eb | 6002 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
6003 | { |
6004 | expressionS global; | |
6005 | ||
6006 | global.X_op = O_constant; | |
6007 | global.X_op_symbol = NULL; | |
6008 | global.X_add_symbol = NULL; | |
6009 | global.X_add_number = local->X_add_number; | |
6010 | ||
6011 | relax_start (local->X_add_symbol); | |
67c0d1eb | 6012 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
6013 | dest, dest, BFD_RELOC_LO16); |
6014 | relax_switch (); | |
67c0d1eb | 6015 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
6016 | relax_end (); |
6017 | } | |
6018 | ||
f6a22291 MR |
6019 | static void |
6020 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
6021 | { | |
6022 | expressionS global; | |
6023 | int hold_mips_optimize; | |
6024 | ||
6025 | global.X_op = O_constant; | |
6026 | global.X_op_symbol = NULL; | |
6027 | global.X_add_symbol = NULL; | |
6028 | global.X_add_number = local->X_add_number; | |
6029 | ||
6030 | relax_start (local->X_add_symbol); | |
6031 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
6032 | relax_switch (); | |
6033 | /* Set mips_optimize around the lui instruction to avoid | |
6034 | inserting an unnecessary nop after the lw. */ | |
6035 | hold_mips_optimize = mips_optimize; | |
6036 | mips_optimize = 2; | |
6037 | macro_build_lui (&global, tmp); | |
6038 | mips_optimize = hold_mips_optimize; | |
6039 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
6040 | relax_end (); | |
6041 | ||
6042 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
6043 | } | |
6044 | ||
df58fc94 RS |
6045 | /* Emit a sequence of instructions to emulate a branch likely operation. |
6046 | BR is an ordinary branch corresponding to one to be emulated. BRNEG | |
6047 | is its complementing branch with the original condition negated. | |
6048 | CALL is set if the original branch specified the link operation. | |
6049 | EP, FMT, SREG and TREG specify the usual macro_build() parameters. | |
6050 | ||
6051 | Code like this is produced in the noreorder mode: | |
6052 | ||
6053 | BRNEG <args>, 1f | |
6054 | nop | |
6055 | b <sym> | |
6056 | delay slot (executed only if branch taken) | |
6057 | 1: | |
6058 | ||
6059 | or, if CALL is set: | |
6060 | ||
6061 | BRNEG <args>, 1f | |
6062 | nop | |
6063 | bal <sym> | |
6064 | delay slot (executed only if branch taken) | |
6065 | 1: | |
6066 | ||
6067 | In the reorder mode the delay slot would be filled with a nop anyway, | |
6068 | so code produced is simply: | |
6069 | ||
6070 | BR <args>, <sym> | |
6071 | nop | |
6072 | ||
6073 | This function is used when producing code for the microMIPS ASE that | |
6074 | does not implement branch likely instructions in hardware. */ | |
6075 | ||
6076 | static void | |
6077 | macro_build_branch_likely (const char *br, const char *brneg, | |
6078 | int call, expressionS *ep, const char *fmt, | |
6079 | unsigned int sreg, unsigned int treg) | |
6080 | { | |
6081 | int noreorder = mips_opts.noreorder; | |
6082 | expressionS expr1; | |
6083 | ||
6084 | gas_assert (mips_opts.micromips); | |
6085 | start_noreorder (); | |
6086 | if (noreorder) | |
6087 | { | |
6088 | micromips_label_expr (&expr1); | |
6089 | macro_build (&expr1, brneg, fmt, sreg, treg); | |
6090 | macro_build (NULL, "nop", ""); | |
6091 | macro_build (ep, call ? "bal" : "b", "p"); | |
6092 | ||
6093 | /* Set to true so that append_insn adds a label. */ | |
6094 | emit_branch_likely_macro = TRUE; | |
6095 | } | |
6096 | else | |
6097 | { | |
6098 | macro_build (ep, br, fmt, sreg, treg); | |
6099 | macro_build (NULL, "nop", ""); | |
6100 | } | |
6101 | end_noreorder (); | |
6102 | } | |
6103 | ||
6104 | /* Emit a coprocessor branch-likely macro specified by TYPE, using CC as | |
6105 | the condition code tested. EP specifies the branch target. */ | |
6106 | ||
6107 | static void | |
6108 | macro_build_branch_ccl (int type, expressionS *ep, unsigned int cc) | |
6109 | { | |
6110 | const int call = 0; | |
6111 | const char *brneg; | |
6112 | const char *br; | |
6113 | ||
6114 | switch (type) | |
6115 | { | |
6116 | case M_BC1FL: | |
6117 | br = "bc1f"; | |
6118 | brneg = "bc1t"; | |
6119 | break; | |
6120 | case M_BC1TL: | |
6121 | br = "bc1t"; | |
6122 | brneg = "bc1f"; | |
6123 | break; | |
6124 | case M_BC2FL: | |
6125 | br = "bc2f"; | |
6126 | brneg = "bc2t"; | |
6127 | break; | |
6128 | case M_BC2TL: | |
6129 | br = "bc2t"; | |
6130 | brneg = "bc2f"; | |
6131 | break; | |
6132 | default: | |
6133 | abort (); | |
6134 | } | |
6135 | macro_build_branch_likely (br, brneg, call, ep, "N,p", cc, ZERO); | |
6136 | } | |
6137 | ||
6138 | /* Emit a two-argument branch macro specified by TYPE, using SREG as | |
6139 | the register tested. EP specifies the branch target. */ | |
6140 | ||
6141 | static void | |
6142 | macro_build_branch_rs (int type, expressionS *ep, unsigned int sreg) | |
6143 | { | |
6144 | const char *brneg = NULL; | |
6145 | const char *br; | |
6146 | int call = 0; | |
6147 | ||
6148 | switch (type) | |
6149 | { | |
6150 | case M_BGEZ: | |
6151 | br = "bgez"; | |
6152 | break; | |
6153 | case M_BGEZL: | |
6154 | br = mips_opts.micromips ? "bgez" : "bgezl"; | |
6155 | brneg = "bltz"; | |
6156 | break; | |
6157 | case M_BGEZALL: | |
6158 | gas_assert (mips_opts.micromips); | |
6159 | br = "bgezals"; | |
6160 | brneg = "bltz"; | |
6161 | call = 1; | |
6162 | break; | |
6163 | case M_BGTZ: | |
6164 | br = "bgtz"; | |
6165 | break; | |
6166 | case M_BGTZL: | |
6167 | br = mips_opts.micromips ? "bgtz" : "bgtzl"; | |
6168 | brneg = "blez"; | |
6169 | break; | |
6170 | case M_BLEZ: | |
6171 | br = "blez"; | |
6172 | break; | |
6173 | case M_BLEZL: | |
6174 | br = mips_opts.micromips ? "blez" : "blezl"; | |
6175 | brneg = "bgtz"; | |
6176 | break; | |
6177 | case M_BLTZ: | |
6178 | br = "bltz"; | |
6179 | break; | |
6180 | case M_BLTZL: | |
6181 | br = mips_opts.micromips ? "bltz" : "bltzl"; | |
6182 | brneg = "bgez"; | |
6183 | break; | |
6184 | case M_BLTZALL: | |
6185 | gas_assert (mips_opts.micromips); | |
6186 | br = "bltzals"; | |
6187 | brneg = "bgez"; | |
6188 | call = 1; | |
6189 | break; | |
6190 | default: | |
6191 | abort (); | |
6192 | } | |
6193 | if (mips_opts.micromips && brneg) | |
6194 | macro_build_branch_likely (br, brneg, call, ep, "s,p", sreg, ZERO); | |
6195 | else | |
6196 | macro_build (ep, br, "s,p", sreg); | |
6197 | } | |
6198 | ||
6199 | /* Emit a three-argument branch macro specified by TYPE, using SREG and | |
6200 | TREG as the registers tested. EP specifies the branch target. */ | |
6201 | ||
6202 | static void | |
6203 | macro_build_branch_rsrt (int type, expressionS *ep, | |
6204 | unsigned int sreg, unsigned int treg) | |
6205 | { | |
6206 | const char *brneg = NULL; | |
6207 | const int call = 0; | |
6208 | const char *br; | |
6209 | ||
6210 | switch (type) | |
6211 | { | |
6212 | case M_BEQ: | |
6213 | case M_BEQ_I: | |
6214 | br = "beq"; | |
6215 | break; | |
6216 | case M_BEQL: | |
6217 | case M_BEQL_I: | |
6218 | br = mips_opts.micromips ? "beq" : "beql"; | |
6219 | brneg = "bne"; | |
6220 | break; | |
6221 | case M_BNE: | |
6222 | case M_BNE_I: | |
6223 | br = "bne"; | |
6224 | break; | |
6225 | case M_BNEL: | |
6226 | case M_BNEL_I: | |
6227 | br = mips_opts.micromips ? "bne" : "bnel"; | |
6228 | brneg = "beq"; | |
6229 | break; | |
6230 | default: | |
6231 | abort (); | |
6232 | } | |
6233 | if (mips_opts.micromips && brneg) | |
6234 | macro_build_branch_likely (br, brneg, call, ep, "s,t,p", sreg, treg); | |
6235 | else | |
6236 | macro_build (ep, br, "s,t,p", sreg, treg); | |
6237 | } | |
6238 | ||
252b5132 RH |
6239 | /* |
6240 | * Build macros | |
6241 | * This routine implements the seemingly endless macro or synthesized | |
6242 | * instructions and addressing modes in the mips assembly language. Many | |
6243 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 6244 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
6245 | * this verbose method. Others are not simple macros but are more like |
6246 | * optimizing code generation. | |
6247 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 6248 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
6249 | * The ensuing load upper instructions are ommited. This implies some kind |
6250 | * of global optimization. We currently only optimize within a single macro. | |
6251 | * For many of the load and store macros if the address is specified as a | |
6252 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
6253 | * first load register 'at' with zero and use it as the base register. The | |
6254 | * mips assembler simply uses register $zero. Just one tiny optimization | |
6255 | * we're missing. | |
6256 | */ | |
6257 | static void | |
17a2f251 | 6258 | macro (struct mips_cl_insn *ip) |
252b5132 | 6259 | { |
741fe287 MR |
6260 | unsigned int treg, sreg, dreg, breg; |
6261 | unsigned int tempreg; | |
252b5132 | 6262 | int mask; |
43841e91 | 6263 | int used_at = 0; |
df58fc94 | 6264 | expressionS label_expr; |
252b5132 | 6265 | expressionS expr1; |
df58fc94 | 6266 | expressionS *ep; |
252b5132 RH |
6267 | const char *s; |
6268 | const char *s2; | |
6269 | const char *fmt; | |
6270 | int likely = 0; | |
252b5132 | 6271 | int coproc = 0; |
df58fc94 | 6272 | int off12 = 0; |
1abe91b1 | 6273 | int call = 0; |
df58fc94 RS |
6274 | int jals = 0; |
6275 | int dbl = 0; | |
6276 | int imm = 0; | |
6277 | int ust = 0; | |
6278 | int lp = 0; | |
6279 | int ab = 0; | |
dd6a37e7 | 6280 | int off0 = 0; |
252b5132 | 6281 | int off; |
67c0d1eb | 6282 | offsetT maxnum; |
252b5132 | 6283 | bfd_reloc_code_real_type r; |
252b5132 RH |
6284 | int hold_mips_optimize; |
6285 | ||
9c2799c2 | 6286 | gas_assert (! mips_opts.mips16); |
252b5132 | 6287 | |
df58fc94 RS |
6288 | treg = EXTRACT_OPERAND (mips_opts.micromips, RT, *ip); |
6289 | dreg = EXTRACT_OPERAND (mips_opts.micromips, RD, *ip); | |
6290 | sreg = breg = EXTRACT_OPERAND (mips_opts.micromips, RS, *ip); | |
252b5132 RH |
6291 | mask = ip->insn_mo->mask; |
6292 | ||
df58fc94 RS |
6293 | label_expr.X_op = O_constant; |
6294 | label_expr.X_op_symbol = NULL; | |
6295 | label_expr.X_add_symbol = NULL; | |
6296 | label_expr.X_add_number = 0; | |
6297 | ||
252b5132 RH |
6298 | expr1.X_op = O_constant; |
6299 | expr1.X_op_symbol = NULL; | |
6300 | expr1.X_add_symbol = NULL; | |
6301 | expr1.X_add_number = 1; | |
6302 | ||
6303 | switch (mask) | |
6304 | { | |
6305 | case M_DABS: | |
6306 | dbl = 1; | |
6307 | case M_ABS: | |
df58fc94 RS |
6308 | /* bgez $a0,1f |
6309 | move v0,$a0 | |
6310 | sub v0,$zero,$a0 | |
6311 | 1: | |
6312 | */ | |
252b5132 | 6313 | |
7d10b47d | 6314 | start_noreorder (); |
252b5132 | 6315 | |
df58fc94 RS |
6316 | if (mips_opts.micromips) |
6317 | micromips_label_expr (&label_expr); | |
6318 | else | |
6319 | label_expr.X_add_number = 8; | |
6320 | macro_build (&label_expr, "bgez", "s,p", sreg); | |
252b5132 | 6321 | if (dreg == sreg) |
a605d2b3 | 6322 | macro_build (NULL, "nop", ""); |
252b5132 | 6323 | else |
67c0d1eb RS |
6324 | move_register (dreg, sreg); |
6325 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); | |
df58fc94 RS |
6326 | if (mips_opts.micromips) |
6327 | micromips_add_label (); | |
252b5132 | 6328 | |
7d10b47d | 6329 | end_noreorder (); |
8fc2e39e | 6330 | break; |
252b5132 RH |
6331 | |
6332 | case M_ADD_I: | |
6333 | s = "addi"; | |
6334 | s2 = "add"; | |
6335 | goto do_addi; | |
6336 | case M_ADDU_I: | |
6337 | s = "addiu"; | |
6338 | s2 = "addu"; | |
6339 | goto do_addi; | |
6340 | case M_DADD_I: | |
6341 | dbl = 1; | |
6342 | s = "daddi"; | |
6343 | s2 = "dadd"; | |
df58fc94 RS |
6344 | if (!mips_opts.micromips) |
6345 | goto do_addi; | |
6346 | if (imm_expr.X_op == O_constant | |
6347 | && imm_expr.X_add_number >= -0x200 | |
6348 | && imm_expr.X_add_number < 0x200) | |
6349 | { | |
6350 | macro_build (NULL, s, "t,r,.", treg, sreg, imm_expr.X_add_number); | |
6351 | break; | |
6352 | } | |
6353 | goto do_addi_i; | |
252b5132 RH |
6354 | case M_DADDU_I: |
6355 | dbl = 1; | |
6356 | s = "daddiu"; | |
6357 | s2 = "daddu"; | |
6358 | do_addi: | |
6359 | if (imm_expr.X_op == O_constant | |
6360 | && imm_expr.X_add_number >= -0x8000 | |
6361 | && imm_expr.X_add_number < 0x8000) | |
6362 | { | |
67c0d1eb | 6363 | macro_build (&imm_expr, s, "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 6364 | break; |
252b5132 | 6365 | } |
df58fc94 | 6366 | do_addi_i: |
8fc2e39e | 6367 | used_at = 1; |
67c0d1eb RS |
6368 | load_register (AT, &imm_expr, dbl); |
6369 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
6370 | break; |
6371 | ||
6372 | case M_AND_I: | |
6373 | s = "andi"; | |
6374 | s2 = "and"; | |
6375 | goto do_bit; | |
6376 | case M_OR_I: | |
6377 | s = "ori"; | |
6378 | s2 = "or"; | |
6379 | goto do_bit; | |
6380 | case M_NOR_I: | |
6381 | s = ""; | |
6382 | s2 = "nor"; | |
6383 | goto do_bit; | |
6384 | case M_XOR_I: | |
6385 | s = "xori"; | |
6386 | s2 = "xor"; | |
6387 | do_bit: | |
6388 | if (imm_expr.X_op == O_constant | |
6389 | && imm_expr.X_add_number >= 0 | |
6390 | && imm_expr.X_add_number < 0x10000) | |
6391 | { | |
6392 | if (mask != M_NOR_I) | |
67c0d1eb | 6393 | macro_build (&imm_expr, s, "t,r,i", treg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
6394 | else |
6395 | { | |
67c0d1eb RS |
6396 | macro_build (&imm_expr, "ori", "t,r,i", |
6397 | treg, sreg, BFD_RELOC_LO16); | |
6398 | macro_build (NULL, "nor", "d,v,t", treg, treg, 0); | |
252b5132 | 6399 | } |
8fc2e39e | 6400 | break; |
252b5132 RH |
6401 | } |
6402 | ||
8fc2e39e | 6403 | used_at = 1; |
67c0d1eb RS |
6404 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
6405 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
6406 | break; |
6407 | ||
8b082fb1 TS |
6408 | case M_BALIGN: |
6409 | switch (imm_expr.X_add_number) | |
6410 | { | |
6411 | case 0: | |
6412 | macro_build (NULL, "nop", ""); | |
6413 | break; | |
6414 | case 2: | |
6415 | macro_build (NULL, "packrl.ph", "d,s,t", treg, treg, sreg); | |
6416 | break; | |
6417 | default: | |
6418 | macro_build (NULL, "balign", "t,s,2", treg, sreg, | |
90ecf173 | 6419 | (int) imm_expr.X_add_number); |
8b082fb1 TS |
6420 | break; |
6421 | } | |
6422 | break; | |
6423 | ||
df58fc94 RS |
6424 | case M_BC1FL: |
6425 | case M_BC1TL: | |
6426 | case M_BC2FL: | |
6427 | case M_BC2TL: | |
6428 | gas_assert (mips_opts.micromips); | |
6429 | macro_build_branch_ccl (mask, &offset_expr, | |
6430 | EXTRACT_OPERAND (1, BCC, *ip)); | |
6431 | break; | |
6432 | ||
252b5132 | 6433 | case M_BEQ_I: |
252b5132 | 6434 | case M_BEQL_I: |
252b5132 | 6435 | case M_BNE_I: |
252b5132 | 6436 | case M_BNEL_I: |
252b5132 | 6437 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) |
df58fc94 RS |
6438 | treg = 0; |
6439 | else | |
252b5132 | 6440 | { |
df58fc94 RS |
6441 | treg = AT; |
6442 | used_at = 1; | |
6443 | load_register (treg, &imm_expr, HAVE_64BIT_GPRS); | |
252b5132 | 6444 | } |
df58fc94 RS |
6445 | /* Fall through. */ |
6446 | case M_BEQL: | |
6447 | case M_BNEL: | |
6448 | macro_build_branch_rsrt (mask, &offset_expr, sreg, treg); | |
252b5132 RH |
6449 | break; |
6450 | ||
6451 | case M_BGEL: | |
6452 | likely = 1; | |
6453 | case M_BGE: | |
6454 | if (treg == 0) | |
df58fc94 RS |
6455 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, sreg); |
6456 | else if (sreg == 0) | |
6457 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, treg); | |
6458 | else | |
252b5132 | 6459 | { |
df58fc94 RS |
6460 | used_at = 1; |
6461 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); | |
6462 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6463 | &offset_expr, AT, ZERO); | |
252b5132 | 6464 | } |
df58fc94 RS |
6465 | break; |
6466 | ||
6467 | case M_BGEZL: | |
6468 | case M_BGEZALL: | |
6469 | case M_BGTZL: | |
6470 | case M_BLEZL: | |
6471 | case M_BLTZL: | |
6472 | case M_BLTZALL: | |
6473 | macro_build_branch_rs (mask, &offset_expr, sreg); | |
252b5132 RH |
6474 | break; |
6475 | ||
6476 | case M_BGTL_I: | |
6477 | likely = 1; | |
6478 | case M_BGT_I: | |
90ecf173 | 6479 | /* Check for > max integer. */ |
252b5132 | 6480 | maxnum = 0x7fffffff; |
ca4e0257 | 6481 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6482 | { |
6483 | maxnum <<= 16; | |
6484 | maxnum |= 0xffff; | |
6485 | maxnum <<= 16; | |
6486 | maxnum |= 0xffff; | |
6487 | } | |
6488 | if (imm_expr.X_op == O_constant | |
6489 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 6490 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6491 | { |
6492 | do_false: | |
90ecf173 | 6493 | /* Result is always false. */ |
252b5132 | 6494 | if (! likely) |
a605d2b3 | 6495 | macro_build (NULL, "nop", ""); |
252b5132 | 6496 | else |
df58fc94 | 6497 | macro_build_branch_rsrt (M_BNEL, &offset_expr, ZERO, ZERO); |
8fc2e39e | 6498 | break; |
252b5132 RH |
6499 | } |
6500 | if (imm_expr.X_op != O_constant) | |
6501 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6502 | ++imm_expr.X_add_number; |
252b5132 RH |
6503 | /* FALLTHROUGH */ |
6504 | case M_BGE_I: | |
6505 | case M_BGEL_I: | |
6506 | if (mask == M_BGEL_I) | |
6507 | likely = 1; | |
6508 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6509 | { | |
df58fc94 RS |
6510 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, |
6511 | &offset_expr, sreg); | |
8fc2e39e | 6512 | break; |
252b5132 RH |
6513 | } |
6514 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6515 | { | |
df58fc94 RS |
6516 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, |
6517 | &offset_expr, sreg); | |
8fc2e39e | 6518 | break; |
252b5132 RH |
6519 | } |
6520 | maxnum = 0x7fffffff; | |
ca4e0257 | 6521 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6522 | { |
6523 | maxnum <<= 16; | |
6524 | maxnum |= 0xffff; | |
6525 | maxnum <<= 16; | |
6526 | maxnum |= 0xffff; | |
6527 | } | |
6528 | maxnum = - maxnum - 1; | |
6529 | if (imm_expr.X_op == O_constant | |
6530 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 6531 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6532 | { |
6533 | do_true: | |
6534 | /* result is always true */ | |
6535 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
67c0d1eb | 6536 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 6537 | break; |
252b5132 | 6538 | } |
8fc2e39e | 6539 | used_at = 1; |
67c0d1eb | 6540 | set_at (sreg, 0); |
df58fc94 RS |
6541 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
6542 | &offset_expr, AT, ZERO); | |
252b5132 RH |
6543 | break; |
6544 | ||
6545 | case M_BGEUL: | |
6546 | likely = 1; | |
6547 | case M_BGEU: | |
6548 | if (treg == 0) | |
6549 | goto do_true; | |
df58fc94 RS |
6550 | else if (sreg == 0) |
6551 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6552 | &offset_expr, ZERO, treg); | |
6553 | else | |
252b5132 | 6554 | { |
df58fc94 RS |
6555 | used_at = 1; |
6556 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); | |
6557 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6558 | &offset_expr, AT, ZERO); | |
252b5132 | 6559 | } |
252b5132 RH |
6560 | break; |
6561 | ||
6562 | case M_BGTUL_I: | |
6563 | likely = 1; | |
6564 | case M_BGTU_I: | |
6565 | if (sreg == 0 | |
ca4e0257 | 6566 | || (HAVE_32BIT_GPRS |
252b5132 | 6567 | && imm_expr.X_op == O_constant |
f01dc953 | 6568 | && imm_expr.X_add_number == -1)) |
252b5132 RH |
6569 | goto do_false; |
6570 | if (imm_expr.X_op != O_constant) | |
6571 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6572 | ++imm_expr.X_add_number; |
252b5132 RH |
6573 | /* FALLTHROUGH */ |
6574 | case M_BGEU_I: | |
6575 | case M_BGEUL_I: | |
6576 | if (mask == M_BGEUL_I) | |
6577 | likely = 1; | |
6578 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6579 | goto do_true; | |
df58fc94 RS |
6580 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) |
6581 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6582 | &offset_expr, sreg, ZERO); | |
6583 | else | |
252b5132 | 6584 | { |
df58fc94 RS |
6585 | used_at = 1; |
6586 | set_at (sreg, 1); | |
6587 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6588 | &offset_expr, AT, ZERO); | |
252b5132 | 6589 | } |
252b5132 RH |
6590 | break; |
6591 | ||
6592 | case M_BGTL: | |
6593 | likely = 1; | |
6594 | case M_BGT: | |
6595 | if (treg == 0) | |
df58fc94 RS |
6596 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, sreg); |
6597 | else if (sreg == 0) | |
6598 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, treg); | |
6599 | else | |
252b5132 | 6600 | { |
df58fc94 RS |
6601 | used_at = 1; |
6602 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); | |
6603 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6604 | &offset_expr, AT, ZERO); | |
252b5132 | 6605 | } |
252b5132 RH |
6606 | break; |
6607 | ||
6608 | case M_BGTUL: | |
6609 | likely = 1; | |
6610 | case M_BGTU: | |
6611 | if (treg == 0) | |
df58fc94 RS |
6612 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, |
6613 | &offset_expr, sreg, ZERO); | |
6614 | else if (sreg == 0) | |
6615 | goto do_false; | |
6616 | else | |
252b5132 | 6617 | { |
df58fc94 RS |
6618 | used_at = 1; |
6619 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); | |
6620 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6621 | &offset_expr, AT, ZERO); | |
252b5132 | 6622 | } |
252b5132 RH |
6623 | break; |
6624 | ||
6625 | case M_BLEL: | |
6626 | likely = 1; | |
6627 | case M_BLE: | |
6628 | if (treg == 0) | |
df58fc94 RS |
6629 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, sreg); |
6630 | else if (sreg == 0) | |
6631 | macro_build_branch_rs (likely ? M_BGEZL : M_BGEZ, &offset_expr, treg); | |
6632 | else | |
252b5132 | 6633 | { |
df58fc94 RS |
6634 | used_at = 1; |
6635 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); | |
6636 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6637 | &offset_expr, AT, ZERO); | |
252b5132 | 6638 | } |
252b5132 RH |
6639 | break; |
6640 | ||
6641 | case M_BLEL_I: | |
6642 | likely = 1; | |
6643 | case M_BLE_I: | |
6644 | maxnum = 0x7fffffff; | |
ca4e0257 | 6645 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
6646 | { |
6647 | maxnum <<= 16; | |
6648 | maxnum |= 0xffff; | |
6649 | maxnum <<= 16; | |
6650 | maxnum |= 0xffff; | |
6651 | } | |
6652 | if (imm_expr.X_op == O_constant | |
6653 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 6654 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
6655 | goto do_true; |
6656 | if (imm_expr.X_op != O_constant) | |
6657 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6658 | ++imm_expr.X_add_number; |
252b5132 RH |
6659 | /* FALLTHROUGH */ |
6660 | case M_BLT_I: | |
6661 | case M_BLTL_I: | |
6662 | if (mask == M_BLTL_I) | |
6663 | likely = 1; | |
6664 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
df58fc94 RS |
6665 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, sreg); |
6666 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6667 | macro_build_branch_rs (likely ? M_BLEZL : M_BLEZ, &offset_expr, sreg); | |
6668 | else | |
252b5132 | 6669 | { |
df58fc94 RS |
6670 | used_at = 1; |
6671 | set_at (sreg, 0); | |
6672 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6673 | &offset_expr, AT, ZERO); | |
252b5132 | 6674 | } |
252b5132 RH |
6675 | break; |
6676 | ||
6677 | case M_BLEUL: | |
6678 | likely = 1; | |
6679 | case M_BLEU: | |
6680 | if (treg == 0) | |
df58fc94 RS |
6681 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, |
6682 | &offset_expr, sreg, ZERO); | |
6683 | else if (sreg == 0) | |
6684 | goto do_true; | |
6685 | else | |
252b5132 | 6686 | { |
df58fc94 RS |
6687 | used_at = 1; |
6688 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); | |
6689 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6690 | &offset_expr, AT, ZERO); | |
252b5132 | 6691 | } |
252b5132 RH |
6692 | break; |
6693 | ||
6694 | case M_BLEUL_I: | |
6695 | likely = 1; | |
6696 | case M_BLEU_I: | |
6697 | if (sreg == 0 | |
ca4e0257 | 6698 | || (HAVE_32BIT_GPRS |
252b5132 | 6699 | && imm_expr.X_op == O_constant |
f01dc953 | 6700 | && imm_expr.X_add_number == -1)) |
252b5132 RH |
6701 | goto do_true; |
6702 | if (imm_expr.X_op != O_constant) | |
6703 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 6704 | ++imm_expr.X_add_number; |
252b5132 RH |
6705 | /* FALLTHROUGH */ |
6706 | case M_BLTU_I: | |
6707 | case M_BLTUL_I: | |
6708 | if (mask == M_BLTUL_I) | |
6709 | likely = 1; | |
6710 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6711 | goto do_false; | |
df58fc94 RS |
6712 | else if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) |
6713 | macro_build_branch_rsrt (likely ? M_BEQL : M_BEQ, | |
6714 | &offset_expr, sreg, ZERO); | |
6715 | else | |
252b5132 | 6716 | { |
df58fc94 RS |
6717 | used_at = 1; |
6718 | set_at (sreg, 1); | |
6719 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6720 | &offset_expr, AT, ZERO); | |
252b5132 | 6721 | } |
252b5132 RH |
6722 | break; |
6723 | ||
6724 | case M_BLTL: | |
6725 | likely = 1; | |
6726 | case M_BLT: | |
6727 | if (treg == 0) | |
df58fc94 RS |
6728 | macro_build_branch_rs (likely ? M_BLTZL : M_BLTZ, &offset_expr, sreg); |
6729 | else if (sreg == 0) | |
6730 | macro_build_branch_rs (likely ? M_BGTZL : M_BGTZ, &offset_expr, treg); | |
6731 | else | |
252b5132 | 6732 | { |
df58fc94 RS |
6733 | used_at = 1; |
6734 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); | |
6735 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6736 | &offset_expr, AT, ZERO); | |
252b5132 | 6737 | } |
252b5132 RH |
6738 | break; |
6739 | ||
6740 | case M_BLTUL: | |
6741 | likely = 1; | |
6742 | case M_BLTU: | |
6743 | if (treg == 0) | |
6744 | goto do_false; | |
df58fc94 RS |
6745 | else if (sreg == 0) |
6746 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6747 | &offset_expr, ZERO, treg); | |
6748 | else | |
252b5132 | 6749 | { |
df58fc94 RS |
6750 | used_at = 1; |
6751 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); | |
6752 | macro_build_branch_rsrt (likely ? M_BNEL : M_BNE, | |
6753 | &offset_expr, AT, ZERO); | |
252b5132 | 6754 | } |
252b5132 RH |
6755 | break; |
6756 | ||
5f74bc13 CD |
6757 | case M_DEXT: |
6758 | { | |
d5818fca MR |
6759 | /* Use unsigned arithmetic. */ |
6760 | addressT pos; | |
6761 | addressT size; | |
5f74bc13 | 6762 | |
90ecf173 | 6763 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) |
5f74bc13 CD |
6764 | { |
6765 | as_bad (_("Unsupported large constant")); | |
6766 | pos = size = 1; | |
6767 | } | |
6768 | else | |
6769 | { | |
d5818fca MR |
6770 | pos = imm_expr.X_add_number; |
6771 | size = imm2_expr.X_add_number; | |
5f74bc13 CD |
6772 | } |
6773 | ||
6774 | if (pos > 63) | |
6775 | { | |
d5818fca | 6776 | as_bad (_("Improper position (%lu)"), (unsigned long) pos); |
5f74bc13 CD |
6777 | pos = 1; |
6778 | } | |
90ecf173 | 6779 | if (size == 0 || size > 64 || (pos + size - 1) > 63) |
5f74bc13 CD |
6780 | { |
6781 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
d5818fca | 6782 | (unsigned long) size, (unsigned long) pos); |
5f74bc13 CD |
6783 | size = 1; |
6784 | } | |
6785 | ||
6786 | if (size <= 32 && pos < 32) | |
6787 | { | |
6788 | s = "dext"; | |
6789 | fmt = "t,r,+A,+C"; | |
6790 | } | |
6791 | else if (size <= 32) | |
6792 | { | |
6793 | s = "dextu"; | |
6794 | fmt = "t,r,+E,+H"; | |
6795 | } | |
6796 | else | |
6797 | { | |
6798 | s = "dextm"; | |
6799 | fmt = "t,r,+A,+G"; | |
6800 | } | |
d5818fca MR |
6801 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, (int) pos, |
6802 | (int) (size - 1)); | |
5f74bc13 | 6803 | } |
8fc2e39e | 6804 | break; |
5f74bc13 CD |
6805 | |
6806 | case M_DINS: | |
6807 | { | |
d5818fca MR |
6808 | /* Use unsigned arithmetic. */ |
6809 | addressT pos; | |
6810 | addressT size; | |
5f74bc13 | 6811 | |
90ecf173 | 6812 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) |
5f74bc13 CD |
6813 | { |
6814 | as_bad (_("Unsupported large constant")); | |
6815 | pos = size = 1; | |
6816 | } | |
6817 | else | |
6818 | { | |
d5818fca MR |
6819 | pos = imm_expr.X_add_number; |
6820 | size = imm2_expr.X_add_number; | |
5f74bc13 CD |
6821 | } |
6822 | ||
6823 | if (pos > 63) | |
6824 | { | |
d5818fca | 6825 | as_bad (_("Improper position (%lu)"), (unsigned long) pos); |
5f74bc13 CD |
6826 | pos = 1; |
6827 | } | |
90ecf173 | 6828 | if (size == 0 || size > 64 || (pos + size - 1) > 63) |
5f74bc13 CD |
6829 | { |
6830 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
d5818fca | 6831 | (unsigned long) size, (unsigned long) pos); |
5f74bc13 CD |
6832 | size = 1; |
6833 | } | |
6834 | ||
6835 | if (pos < 32 && (pos + size - 1) < 32) | |
6836 | { | |
6837 | s = "dins"; | |
6838 | fmt = "t,r,+A,+B"; | |
6839 | } | |
6840 | else if (pos >= 32) | |
6841 | { | |
6842 | s = "dinsu"; | |
6843 | fmt = "t,r,+E,+F"; | |
6844 | } | |
6845 | else | |
6846 | { | |
6847 | s = "dinsm"; | |
6848 | fmt = "t,r,+A,+F"; | |
6849 | } | |
750bdd57 AS |
6850 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, (int) pos, |
6851 | (int) (pos + size - 1)); | |
5f74bc13 | 6852 | } |
8fc2e39e | 6853 | break; |
5f74bc13 | 6854 | |
252b5132 RH |
6855 | case M_DDIV_3: |
6856 | dbl = 1; | |
6857 | case M_DIV_3: | |
6858 | s = "mflo"; | |
6859 | goto do_div3; | |
6860 | case M_DREM_3: | |
6861 | dbl = 1; | |
6862 | case M_REM_3: | |
6863 | s = "mfhi"; | |
6864 | do_div3: | |
6865 | if (treg == 0) | |
6866 | { | |
6867 | as_warn (_("Divide by zero.")); | |
6868 | if (mips_trap) | |
df58fc94 | 6869 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 6870 | else |
df58fc94 | 6871 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 6872 | break; |
252b5132 RH |
6873 | } |
6874 | ||
7d10b47d | 6875 | start_noreorder (); |
252b5132 RH |
6876 | if (mips_trap) |
6877 | { | |
df58fc94 | 6878 | macro_build (NULL, "teq", TRAP_FMT, treg, ZERO, 7); |
67c0d1eb | 6879 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
252b5132 RH |
6880 | } |
6881 | else | |
6882 | { | |
df58fc94 RS |
6883 | if (mips_opts.micromips) |
6884 | micromips_label_expr (&label_expr); | |
6885 | else | |
6886 | label_expr.X_add_number = 8; | |
6887 | macro_build (&label_expr, "bne", "s,t,p", treg, ZERO); | |
67c0d1eb | 6888 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
df58fc94 RS |
6889 | macro_build (NULL, "break", BRK_FMT, 7); |
6890 | if (mips_opts.micromips) | |
6891 | micromips_add_label (); | |
252b5132 RH |
6892 | } |
6893 | expr1.X_add_number = -1; | |
8fc2e39e | 6894 | used_at = 1; |
f6a22291 | 6895 | load_register (AT, &expr1, dbl); |
df58fc94 RS |
6896 | if (mips_opts.micromips) |
6897 | micromips_label_expr (&label_expr); | |
6898 | else | |
6899 | label_expr.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); | |
6900 | macro_build (&label_expr, "bne", "s,t,p", treg, AT); | |
252b5132 RH |
6901 | if (dbl) |
6902 | { | |
6903 | expr1.X_add_number = 1; | |
f6a22291 | 6904 | load_register (AT, &expr1, dbl); |
df58fc94 | 6905 | macro_build (NULL, "dsll32", SHFT_FMT, AT, AT, 31); |
252b5132 RH |
6906 | } |
6907 | else | |
6908 | { | |
6909 | expr1.X_add_number = 0x80000000; | |
df58fc94 | 6910 | macro_build (&expr1, "lui", LUI_FMT, AT, BFD_RELOC_HI16); |
252b5132 RH |
6911 | } |
6912 | if (mips_trap) | |
6913 | { | |
df58fc94 | 6914 | macro_build (NULL, "teq", TRAP_FMT, sreg, AT, 6); |
252b5132 RH |
6915 | /* We want to close the noreorder block as soon as possible, so |
6916 | that later insns are available for delay slot filling. */ | |
7d10b47d | 6917 | end_noreorder (); |
252b5132 RH |
6918 | } |
6919 | else | |
6920 | { | |
df58fc94 RS |
6921 | if (mips_opts.micromips) |
6922 | micromips_label_expr (&label_expr); | |
6923 | else | |
6924 | label_expr.X_add_number = 8; | |
6925 | macro_build (&label_expr, "bne", "s,t,p", sreg, AT); | |
a605d2b3 | 6926 | macro_build (NULL, "nop", ""); |
252b5132 RH |
6927 | |
6928 | /* We want to close the noreorder block as soon as possible, so | |
6929 | that later insns are available for delay slot filling. */ | |
7d10b47d | 6930 | end_noreorder (); |
252b5132 | 6931 | |
df58fc94 | 6932 | macro_build (NULL, "break", BRK_FMT, 6); |
252b5132 | 6933 | } |
df58fc94 RS |
6934 | if (mips_opts.micromips) |
6935 | micromips_add_label (); | |
6936 | macro_build (NULL, s, MFHL_FMT, dreg); | |
252b5132 RH |
6937 | break; |
6938 | ||
6939 | case M_DIV_3I: | |
6940 | s = "div"; | |
6941 | s2 = "mflo"; | |
6942 | goto do_divi; | |
6943 | case M_DIVU_3I: | |
6944 | s = "divu"; | |
6945 | s2 = "mflo"; | |
6946 | goto do_divi; | |
6947 | case M_REM_3I: | |
6948 | s = "div"; | |
6949 | s2 = "mfhi"; | |
6950 | goto do_divi; | |
6951 | case M_REMU_3I: | |
6952 | s = "divu"; | |
6953 | s2 = "mfhi"; | |
6954 | goto do_divi; | |
6955 | case M_DDIV_3I: | |
6956 | dbl = 1; | |
6957 | s = "ddiv"; | |
6958 | s2 = "mflo"; | |
6959 | goto do_divi; | |
6960 | case M_DDIVU_3I: | |
6961 | dbl = 1; | |
6962 | s = "ddivu"; | |
6963 | s2 = "mflo"; | |
6964 | goto do_divi; | |
6965 | case M_DREM_3I: | |
6966 | dbl = 1; | |
6967 | s = "ddiv"; | |
6968 | s2 = "mfhi"; | |
6969 | goto do_divi; | |
6970 | case M_DREMU_3I: | |
6971 | dbl = 1; | |
6972 | s = "ddivu"; | |
6973 | s2 = "mfhi"; | |
6974 | do_divi: | |
6975 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6976 | { | |
6977 | as_warn (_("Divide by zero.")); | |
6978 | if (mips_trap) | |
df58fc94 | 6979 | macro_build (NULL, "teq", TRAP_FMT, ZERO, ZERO, 7); |
252b5132 | 6980 | else |
df58fc94 | 6981 | macro_build (NULL, "break", BRK_FMT, 7); |
8fc2e39e | 6982 | break; |
252b5132 RH |
6983 | } |
6984 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
6985 | { | |
6986 | if (strcmp (s2, "mflo") == 0) | |
67c0d1eb | 6987 | move_register (dreg, sreg); |
252b5132 | 6988 | else |
c80c840e | 6989 | move_register (dreg, ZERO); |
8fc2e39e | 6990 | break; |
252b5132 RH |
6991 | } |
6992 | if (imm_expr.X_op == O_constant | |
6993 | && imm_expr.X_add_number == -1 | |
6994 | && s[strlen (s) - 1] != 'u') | |
6995 | { | |
6996 | if (strcmp (s2, "mflo") == 0) | |
6997 | { | |
67c0d1eb | 6998 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", dreg, sreg); |
252b5132 RH |
6999 | } |
7000 | else | |
c80c840e | 7001 | move_register (dreg, ZERO); |
8fc2e39e | 7002 | break; |
252b5132 RH |
7003 | } |
7004 | ||
8fc2e39e | 7005 | used_at = 1; |
67c0d1eb RS |
7006 | load_register (AT, &imm_expr, dbl); |
7007 | macro_build (NULL, s, "z,s,t", sreg, AT); | |
df58fc94 | 7008 | macro_build (NULL, s2, MFHL_FMT, dreg); |
252b5132 RH |
7009 | break; |
7010 | ||
7011 | case M_DIVU_3: | |
7012 | s = "divu"; | |
7013 | s2 = "mflo"; | |
7014 | goto do_divu3; | |
7015 | case M_REMU_3: | |
7016 | s = "divu"; | |
7017 | s2 = "mfhi"; | |
7018 | goto do_divu3; | |
7019 | case M_DDIVU_3: | |
7020 | s = "ddivu"; | |
7021 | s2 = "mflo"; | |
7022 | goto do_divu3; | |
7023 | case M_DREMU_3: | |
7024 | s = "ddivu"; | |
7025 | s2 = "mfhi"; | |
7026 | do_divu3: | |
7d10b47d | 7027 | start_noreorder (); |
252b5132 RH |
7028 | if (mips_trap) |
7029 | { | |
df58fc94 | 7030 | macro_build (NULL, "teq", TRAP_FMT, treg, ZERO, 7); |
67c0d1eb | 7031 | macro_build (NULL, s, "z,s,t", sreg, treg); |
252b5132 RH |
7032 | /* We want to close the noreorder block as soon as possible, so |
7033 | that later insns are available for delay slot filling. */ | |
7d10b47d | 7034 | end_noreorder (); |
252b5132 RH |
7035 | } |
7036 | else | |
7037 | { | |
df58fc94 RS |
7038 | if (mips_opts.micromips) |
7039 | micromips_label_expr (&label_expr); | |
7040 | else | |
7041 | label_expr.X_add_number = 8; | |
7042 | macro_build (&label_expr, "bne", "s,t,p", treg, ZERO); | |
67c0d1eb | 7043 | macro_build (NULL, s, "z,s,t", sreg, treg); |
252b5132 RH |
7044 | |
7045 | /* We want to close the noreorder block as soon as possible, so | |
7046 | that later insns are available for delay slot filling. */ | |
7d10b47d | 7047 | end_noreorder (); |
df58fc94 RS |
7048 | macro_build (NULL, "break", BRK_FMT, 7); |
7049 | if (mips_opts.micromips) | |
7050 | micromips_add_label (); | |
252b5132 | 7051 | } |
df58fc94 | 7052 | macro_build (NULL, s2, MFHL_FMT, dreg); |
8fc2e39e | 7053 | break; |
252b5132 | 7054 | |
1abe91b1 MR |
7055 | case M_DLCA_AB: |
7056 | dbl = 1; | |
7057 | case M_LCA_AB: | |
7058 | call = 1; | |
7059 | goto do_la; | |
252b5132 RH |
7060 | case M_DLA_AB: |
7061 | dbl = 1; | |
7062 | case M_LA_AB: | |
1abe91b1 | 7063 | do_la: |
252b5132 RH |
7064 | /* Load the address of a symbol into a register. If breg is not |
7065 | zero, we then add a base register to it. */ | |
7066 | ||
3bec30a8 TS |
7067 | if (dbl && HAVE_32BIT_GPRS) |
7068 | as_warn (_("dla used to load 32-bit register")); | |
7069 | ||
90ecf173 | 7070 | if (!dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
7071 | as_warn (_("la used to load 64-bit address")); |
7072 | ||
0c11417f MR |
7073 | if (offset_expr.X_op == O_constant |
7074 | && offset_expr.X_add_number >= -0x8000 | |
7075 | && offset_expr.X_add_number < 0x8000) | |
7076 | { | |
aed1a261 | 7077 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
17a2f251 | 7078 | "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7079 | break; |
0c11417f MR |
7080 | } |
7081 | ||
741fe287 | 7082 | if (mips_opts.at && (treg == breg)) |
afdbd6d0 CD |
7083 | { |
7084 | tempreg = AT; | |
7085 | used_at = 1; | |
7086 | } | |
7087 | else | |
7088 | { | |
7089 | tempreg = treg; | |
afdbd6d0 CD |
7090 | } |
7091 | ||
252b5132 RH |
7092 | if (offset_expr.X_op != O_symbol |
7093 | && offset_expr.X_op != O_constant) | |
7094 | { | |
f71d0d44 | 7095 | as_bad (_("Expression too complex")); |
252b5132 RH |
7096 | offset_expr.X_op = O_constant; |
7097 | } | |
7098 | ||
252b5132 | 7099 | if (offset_expr.X_op == O_constant) |
aed1a261 | 7100 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
7101 | else if (mips_pic == NO_PIC) |
7102 | { | |
d6bc6245 | 7103 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 7104 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
7105 | Otherwise we want |
7106 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
7107 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7108 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 7109 | so we may as well always use the latter form. |
76b3015f | 7110 | |
6caf9ef4 TS |
7111 | With 64bit address space and a usable $at we want |
7112 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
7113 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
7114 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
7115 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
7116 | dsll32 $tempreg,0 | |
7117 | daddu $tempreg,$tempreg,$at | |
7118 | ||
7119 | If $at is already in use, we use a path which is suboptimal | |
7120 | on superscalar processors. | |
7121 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
7122 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
7123 | dsll $tempreg,16 | |
7124 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
7125 | dsll $tempreg,16 | |
7126 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
7127 | ||
7128 | For GP relative symbols in 64bit address space we can use | |
7129 | the same sequence as in 32bit address space. */ | |
aed1a261 | 7130 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 7131 | { |
6caf9ef4 TS |
7132 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
7133 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
7134 | { | |
7135 | relax_start (offset_expr.X_add_symbol); | |
7136 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7137 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
7138 | relax_switch (); | |
7139 | } | |
d6bc6245 | 7140 | |
741fe287 | 7141 | if (used_at == 0 && mips_opts.at) |
98d3f06f | 7142 | { |
df58fc94 | 7143 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7144 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 7145 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7146 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 7147 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7148 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 7149 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7150 | AT, AT, BFD_RELOC_LO16); |
df58fc94 | 7151 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb | 7152 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
98d3f06f KH |
7153 | used_at = 1; |
7154 | } | |
7155 | else | |
7156 | { | |
df58fc94 | 7157 | macro_build (&offset_expr, "lui", LUI_FMT, |
17a2f251 | 7158 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 7159 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7160 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
df58fc94 | 7161 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 7162 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7163 | tempreg, tempreg, BFD_RELOC_HI16_S); |
df58fc94 | 7164 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb | 7165 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 7166 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 7167 | } |
6caf9ef4 TS |
7168 | |
7169 | if (mips_relax.sequence) | |
7170 | relax_end (); | |
98d3f06f KH |
7171 | } |
7172 | else | |
7173 | { | |
7174 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 7175 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 7176 | { |
4d7206a2 | 7177 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7178 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7179 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 7180 | relax_switch (); |
98d3f06f | 7181 | } |
6943caf0 | 7182 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
f71d0d44 | 7183 | as_bad (_("Offset too large")); |
67c0d1eb RS |
7184 | macro_build_lui (&offset_expr, tempreg); |
7185 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7186 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
7187 | if (mips_relax.sequence) |
7188 | relax_end (); | |
98d3f06f | 7189 | } |
252b5132 | 7190 | } |
0a44bf69 | 7191 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 7192 | { |
9117d219 NC |
7193 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
7194 | ||
252b5132 RH |
7195 | /* If this is a reference to an external symbol, and there |
7196 | is no constant, we want | |
7197 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 7198 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 7199 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
7200 | For a local symbol, we want |
7201 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7202 | nop | |
7203 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7204 | ||
7205 | If we have a small constant, and this is a reference to | |
7206 | an external symbol, we want | |
7207 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7208 | nop | |
7209 | addiu $tempreg,$tempreg,<constant> | |
7210 | For a local symbol, we want the same instruction | |
7211 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
7212 | addiu instruction. | |
7213 | ||
7214 | If we have a large constant, and this is a reference to | |
7215 | an external symbol, we want | |
7216 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7217 | lui $at,<hiconstant> | |
7218 | addiu $at,$at,<loconstant> | |
7219 | addu $tempreg,$tempreg,$at | |
7220 | For a local symbol, we want the same instruction | |
7221 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 7222 | addiu instruction. |
ed6fb7bd SC |
7223 | */ |
7224 | ||
4d7206a2 | 7225 | if (offset_expr.X_add_number == 0) |
252b5132 | 7226 | { |
0a44bf69 RS |
7227 | if (mips_pic == SVR4_PIC |
7228 | && breg == 0 | |
7229 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
7230 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
7231 | ||
7232 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
7233 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7234 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 7235 | if (breg != 0) |
252b5132 RH |
7236 | { |
7237 | /* We're going to put in an addu instruction using | |
7238 | tempreg, so we may as well insert the nop right | |
7239 | now. */ | |
269137b2 | 7240 | load_delay_nop (); |
252b5132 | 7241 | } |
4d7206a2 | 7242 | relax_switch (); |
67c0d1eb RS |
7243 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7244 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 7245 | load_delay_nop (); |
67c0d1eb RS |
7246 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7247 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 7248 | relax_end (); |
252b5132 RH |
7249 | /* FIXME: If breg == 0, and the next instruction uses |
7250 | $tempreg, then if this variant case is used an extra | |
7251 | nop will be generated. */ | |
7252 | } | |
4d7206a2 RS |
7253 | else if (offset_expr.X_add_number >= -0x8000 |
7254 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 7255 | { |
67c0d1eb | 7256 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 7257 | load_delay_nop (); |
67c0d1eb | 7258 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
7259 | } |
7260 | else | |
7261 | { | |
4d7206a2 RS |
7262 | expr1.X_add_number = offset_expr.X_add_number; |
7263 | offset_expr.X_add_number = | |
7264 | ((offset_expr.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
67c0d1eb | 7265 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 7266 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
7267 | /* If we are going to add in a base register, and the |
7268 | target register and the base register are the same, | |
7269 | then we are using AT as a temporary register. Since | |
7270 | we want to load the constant into AT, we add our | |
7271 | current AT (from the global offset table) and the | |
7272 | register into the register now, and pretend we were | |
7273 | not using a base register. */ | |
67c0d1eb | 7274 | if (breg == treg) |
252b5132 | 7275 | { |
269137b2 | 7276 | load_delay_nop (); |
67c0d1eb | 7277 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7278 | treg, AT, breg); |
252b5132 RH |
7279 | breg = 0; |
7280 | tempreg = treg; | |
252b5132 | 7281 | } |
f6a22291 | 7282 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
7283 | used_at = 1; |
7284 | } | |
7285 | } | |
0a44bf69 | 7286 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 7287 | { |
67c0d1eb | 7288 | int add_breg_early = 0; |
f5040a92 AO |
7289 | |
7290 | /* If this is a reference to an external, and there is no | |
7291 | constant, or local symbol (*), with or without a | |
7292 | constant, we want | |
7293 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 7294 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
7295 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
7296 | ||
7297 | If we have a small constant, and this is a reference to | |
7298 | an external symbol, we want | |
7299 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
7300 | addiu $tempreg,$tempreg,<constant> | |
7301 | ||
7302 | If we have a large constant, and this is a reference to | |
7303 | an external symbol, we want | |
7304 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
7305 | lui $at,<hiconstant> | |
7306 | addiu $at,$at,<loconstant> | |
7307 | addu $tempreg,$tempreg,$at | |
7308 | ||
7309 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
7310 | local symbols, even though it introduces an additional | |
7311 | instruction. */ | |
7312 | ||
f5040a92 AO |
7313 | if (offset_expr.X_add_number) |
7314 | { | |
4d7206a2 | 7315 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
7316 | offset_expr.X_add_number = 0; |
7317 | ||
4d7206a2 | 7318 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7319 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7320 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
7321 | |
7322 | if (expr1.X_add_number >= -0x8000 | |
7323 | && expr1.X_add_number < 0x8000) | |
7324 | { | |
67c0d1eb RS |
7325 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
7326 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 7327 | } |
ecd13cd3 | 7328 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 7329 | { |
f5040a92 AO |
7330 | /* If we are going to add in a base register, and the |
7331 | target register and the base register are the same, | |
7332 | then we are using AT as a temporary register. Since | |
7333 | we want to load the constant into AT, we add our | |
7334 | current AT (from the global offset table) and the | |
7335 | register into the register now, and pretend we were | |
7336 | not using a base register. */ | |
7337 | if (breg != treg) | |
7338 | dreg = tempreg; | |
7339 | else | |
7340 | { | |
9c2799c2 | 7341 | gas_assert (tempreg == AT); |
67c0d1eb RS |
7342 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
7343 | treg, AT, breg); | |
f5040a92 | 7344 | dreg = treg; |
67c0d1eb | 7345 | add_breg_early = 1; |
f5040a92 AO |
7346 | } |
7347 | ||
f6a22291 | 7348 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7349 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7350 | dreg, dreg, AT); |
f5040a92 | 7351 | |
f5040a92 AO |
7352 | used_at = 1; |
7353 | } | |
7354 | else | |
7355 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
7356 | ||
4d7206a2 | 7357 | relax_switch (); |
f5040a92 AO |
7358 | offset_expr.X_add_number = expr1.X_add_number; |
7359 | ||
67c0d1eb RS |
7360 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7361 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
7362 | if (add_breg_early) | |
f5040a92 | 7363 | { |
67c0d1eb | 7364 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
f899b4b8 | 7365 | treg, tempreg, breg); |
f5040a92 AO |
7366 | breg = 0; |
7367 | tempreg = treg; | |
7368 | } | |
4d7206a2 | 7369 | relax_end (); |
f5040a92 | 7370 | } |
4d7206a2 | 7371 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 7372 | { |
4d7206a2 | 7373 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7374 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7375 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 7376 | relax_switch (); |
67c0d1eb RS |
7377 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7378 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 7379 | relax_end (); |
f5040a92 | 7380 | } |
4d7206a2 | 7381 | else |
f5040a92 | 7382 | { |
67c0d1eb RS |
7383 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7384 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
7385 | } |
7386 | } | |
0a44bf69 | 7387 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 7388 | { |
67c0d1eb | 7389 | int gpdelay; |
9117d219 NC |
7390 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
7391 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 7392 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
7393 | |
7394 | /* This is the large GOT case. If this is a reference to an | |
7395 | external symbol, and there is no constant, we want | |
7396 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7397 | addu $tempreg,$tempreg,$gp | |
7398 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 7399 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
7400 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
7401 | addu $tempreg,$tempreg,$gp | |
7402 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
7403 | For a local symbol, we want |
7404 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7405 | nop | |
7406 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
7407 | ||
7408 | If we have a small constant, and this is a reference to | |
7409 | an external symbol, we want | |
7410 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7411 | addu $tempreg,$tempreg,$gp | |
7412 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7413 | nop | |
7414 | addiu $tempreg,$tempreg,<constant> | |
7415 | For a local symbol, we want | |
7416 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7417 | nop | |
7418 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
7419 | ||
7420 | If we have a large constant, and this is a reference to | |
7421 | an external symbol, we want | |
7422 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7423 | addu $tempreg,$tempreg,$gp | |
7424 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7425 | lui $at,<hiconstant> | |
7426 | addiu $at,$at,<loconstant> | |
7427 | addu $tempreg,$tempreg,$at | |
7428 | For a local symbol, we want | |
7429 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7430 | lui $at,<hiconstant> | |
7431 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
7432 | addu $tempreg,$tempreg,$at | |
f5040a92 | 7433 | */ |
438c16b8 | 7434 | |
252b5132 RH |
7435 | expr1.X_add_number = offset_expr.X_add_number; |
7436 | offset_expr.X_add_number = 0; | |
4d7206a2 | 7437 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 7438 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
7439 | if (expr1.X_add_number == 0 && breg == 0 |
7440 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
7441 | { |
7442 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
7443 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
7444 | } | |
df58fc94 | 7445 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 7446 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7447 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 7448 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 7449 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
7450 | if (expr1.X_add_number == 0) |
7451 | { | |
67c0d1eb | 7452 | if (breg != 0) |
252b5132 RH |
7453 | { |
7454 | /* We're going to put in an addu instruction using | |
7455 | tempreg, so we may as well insert the nop right | |
7456 | now. */ | |
269137b2 | 7457 | load_delay_nop (); |
252b5132 | 7458 | } |
252b5132 RH |
7459 | } |
7460 | else if (expr1.X_add_number >= -0x8000 | |
7461 | && expr1.X_add_number < 0x8000) | |
7462 | { | |
269137b2 | 7463 | load_delay_nop (); |
67c0d1eb | 7464 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 7465 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
7466 | } |
7467 | else | |
7468 | { | |
252b5132 RH |
7469 | /* If we are going to add in a base register, and the |
7470 | target register and the base register are the same, | |
7471 | then we are using AT as a temporary register. Since | |
7472 | we want to load the constant into AT, we add our | |
7473 | current AT (from the global offset table) and the | |
7474 | register into the register now, and pretend we were | |
7475 | not using a base register. */ | |
7476 | if (breg != treg) | |
67c0d1eb | 7477 | dreg = tempreg; |
252b5132 RH |
7478 | else |
7479 | { | |
9c2799c2 | 7480 | gas_assert (tempreg == AT); |
269137b2 | 7481 | load_delay_nop (); |
67c0d1eb | 7482 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7483 | treg, AT, breg); |
252b5132 | 7484 | dreg = treg; |
252b5132 RH |
7485 | } |
7486 | ||
f6a22291 | 7487 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7488 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 7489 | |
252b5132 RH |
7490 | used_at = 1; |
7491 | } | |
4d7206a2 RS |
7492 | offset_expr.X_add_number = |
7493 | ((expr1.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
7494 | relax_switch (); | |
252b5132 | 7495 | |
67c0d1eb | 7496 | if (gpdelay) |
252b5132 RH |
7497 | { |
7498 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 7499 | the first instruction on the main stream does not. */ |
67c0d1eb | 7500 | macro_build (NULL, "nop", ""); |
252b5132 | 7501 | } |
ed6fb7bd | 7502 | |
67c0d1eb RS |
7503 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7504 | local_reloc_type, mips_gp_register); | |
f5040a92 | 7505 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
7506 | && expr1.X_add_number < 0x8000) |
7507 | { | |
269137b2 | 7508 | load_delay_nop (); |
67c0d1eb RS |
7509 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7510 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 7511 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
7512 | register, the external symbol case ended with a load, |
7513 | so if the symbol turns out to not be external, and | |
7514 | the next instruction uses tempreg, an unnecessary nop | |
7515 | will be inserted. */ | |
252b5132 RH |
7516 | } |
7517 | else | |
7518 | { | |
7519 | if (breg == treg) | |
7520 | { | |
7521 | /* We must add in the base register now, as in the | |
f5040a92 | 7522 | external symbol case. */ |
9c2799c2 | 7523 | gas_assert (tempreg == AT); |
269137b2 | 7524 | load_delay_nop (); |
67c0d1eb | 7525 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7526 | treg, AT, breg); |
252b5132 RH |
7527 | tempreg = treg; |
7528 | /* We set breg to 0 because we have arranged to add | |
f5040a92 | 7529 | it in in both cases. */ |
252b5132 RH |
7530 | breg = 0; |
7531 | } | |
7532 | ||
67c0d1eb RS |
7533 | macro_build_lui (&expr1, AT); |
7534 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 7535 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 7536 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7537 | tempreg, tempreg, AT); |
8fc2e39e | 7538 | used_at = 1; |
252b5132 | 7539 | } |
4d7206a2 | 7540 | relax_end (); |
252b5132 | 7541 | } |
0a44bf69 | 7542 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 7543 | { |
f5040a92 AO |
7544 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
7545 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 7546 | int add_breg_early = 0; |
f5040a92 AO |
7547 | |
7548 | /* This is the large GOT case. If this is a reference to an | |
7549 | external symbol, and there is no constant, we want | |
7550 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7551 | add $tempreg,$tempreg,$gp | |
7552 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 7553 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
7554 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
7555 | add $tempreg,$tempreg,$gp | |
7556 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
7557 | ||
7558 | If we have a small constant, and this is a reference to | |
7559 | an external symbol, we want | |
7560 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7561 | add $tempreg,$tempreg,$gp | |
7562 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7563 | addi $tempreg,$tempreg,<constant> | |
7564 | ||
7565 | If we have a large constant, and this is a reference to | |
7566 | an external symbol, we want | |
7567 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7568 | addu $tempreg,$tempreg,$gp | |
7569 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
7570 | lui $at,<hiconstant> | |
7571 | addi $at,$at,<loconstant> | |
7572 | add $tempreg,$tempreg,$at | |
7573 | ||
7574 | If we have NewABI, and we know it's a local symbol, we want | |
7575 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
7576 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
7577 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
7578 | ||
4d7206a2 | 7579 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 7580 | |
4d7206a2 | 7581 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
7582 | offset_expr.X_add_number = 0; |
7583 | ||
1abe91b1 MR |
7584 | if (expr1.X_add_number == 0 && breg == 0 |
7585 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
7586 | { |
7587 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
7588 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
7589 | } | |
df58fc94 | 7590 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, lui_reloc_type); |
67c0d1eb | 7591 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7592 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
7593 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7594 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
7595 | |
7596 | if (expr1.X_add_number == 0) | |
4d7206a2 | 7597 | ; |
f5040a92 AO |
7598 | else if (expr1.X_add_number >= -0x8000 |
7599 | && expr1.X_add_number < 0x8000) | |
7600 | { | |
67c0d1eb | 7601 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 7602 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 7603 | } |
ecd13cd3 | 7604 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 | 7605 | { |
f5040a92 AO |
7606 | /* If we are going to add in a base register, and the |
7607 | target register and the base register are the same, | |
7608 | then we are using AT as a temporary register. Since | |
7609 | we want to load the constant into AT, we add our | |
7610 | current AT (from the global offset table) and the | |
7611 | register into the register now, and pretend we were | |
7612 | not using a base register. */ | |
7613 | if (breg != treg) | |
7614 | dreg = tempreg; | |
7615 | else | |
7616 | { | |
9c2799c2 | 7617 | gas_assert (tempreg == AT); |
67c0d1eb | 7618 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7619 | treg, AT, breg); |
f5040a92 | 7620 | dreg = treg; |
67c0d1eb | 7621 | add_breg_early = 1; |
f5040a92 AO |
7622 | } |
7623 | ||
f6a22291 | 7624 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 7625 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 7626 | |
f5040a92 AO |
7627 | used_at = 1; |
7628 | } | |
7629 | else | |
7630 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
7631 | ||
4d7206a2 | 7632 | relax_switch (); |
f5040a92 | 7633 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
7634 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
7635 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
7636 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
7637 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
7638 | if (add_breg_early) | |
f5040a92 | 7639 | { |
67c0d1eb | 7640 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 7641 | treg, tempreg, breg); |
f5040a92 AO |
7642 | breg = 0; |
7643 | tempreg = treg; | |
7644 | } | |
4d7206a2 | 7645 | relax_end (); |
f5040a92 | 7646 | } |
252b5132 RH |
7647 | else |
7648 | abort (); | |
7649 | ||
7650 | if (breg != 0) | |
aed1a261 | 7651 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", treg, tempreg, breg); |
252b5132 RH |
7652 | break; |
7653 | ||
52b6b6b9 | 7654 | case M_MSGSND: |
df58fc94 | 7655 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7656 | { |
7657 | unsigned long temp = (treg << 16) | (0x01); | |
7658 | macro_build (NULL, "c2", "C", temp); | |
7659 | } | |
c7af4273 | 7660 | break; |
52b6b6b9 JM |
7661 | |
7662 | case M_MSGLD: | |
df58fc94 | 7663 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7664 | { |
7665 | unsigned long temp = (0x02); | |
7666 | macro_build (NULL, "c2", "C", temp); | |
7667 | } | |
c7af4273 | 7668 | break; |
52b6b6b9 JM |
7669 | |
7670 | case M_MSGLD_T: | |
df58fc94 | 7671 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7672 | { |
7673 | unsigned long temp = (treg << 16) | (0x02); | |
7674 | macro_build (NULL, "c2", "C", temp); | |
7675 | } | |
c7af4273 | 7676 | break; |
52b6b6b9 JM |
7677 | |
7678 | case M_MSGWAIT: | |
df58fc94 | 7679 | gas_assert (!mips_opts.micromips); |
52b6b6b9 | 7680 | macro_build (NULL, "c2", "C", 3); |
c7af4273 | 7681 | break; |
52b6b6b9 JM |
7682 | |
7683 | case M_MSGWAIT_T: | |
df58fc94 | 7684 | gas_assert (!mips_opts.micromips); |
52b6b6b9 JM |
7685 | { |
7686 | unsigned long temp = (treg << 16) | 0x03; | |
7687 | macro_build (NULL, "c2", "C", temp); | |
7688 | } | |
c7af4273 | 7689 | break; |
52b6b6b9 | 7690 | |
252b5132 RH |
7691 | case M_J_A: |
7692 | /* The j instruction may not be used in PIC code, since it | |
7693 | requires an absolute address. We convert it to a b | |
7694 | instruction. */ | |
7695 | if (mips_pic == NO_PIC) | |
67c0d1eb | 7696 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 7697 | else |
67c0d1eb | 7698 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 7699 | break; |
252b5132 RH |
7700 | |
7701 | /* The jal instructions must be handled as macros because when | |
7702 | generating PIC code they expand to multi-instruction | |
7703 | sequences. Normally they are simple instructions. */ | |
df58fc94 RS |
7704 | case M_JALS_1: |
7705 | dreg = RA; | |
7706 | /* Fall through. */ | |
7707 | case M_JALS_2: | |
7708 | gas_assert (mips_opts.micromips); | |
7709 | jals = 1; | |
7710 | goto jal; | |
252b5132 RH |
7711 | case M_JAL_1: |
7712 | dreg = RA; | |
7713 | /* Fall through. */ | |
7714 | case M_JAL_2: | |
df58fc94 | 7715 | jal: |
3e722fb5 | 7716 | if (mips_pic == NO_PIC) |
df58fc94 RS |
7717 | { |
7718 | s = jals ? "jalrs" : "jalr"; | |
7719 | if (mips_opts.micromips && dreg == RA) | |
7720 | macro_build (NULL, s, "mj", sreg); | |
7721 | else | |
7722 | macro_build (NULL, s, JALR_FMT, dreg, sreg); | |
7723 | } | |
0a44bf69 | 7724 | else |
252b5132 | 7725 | { |
df58fc94 RS |
7726 | int cprestore = (mips_pic == SVR4_PIC && !HAVE_NEWABI |
7727 | && mips_cprestore_offset >= 0); | |
7728 | ||
252b5132 RH |
7729 | if (sreg != PIC_CALL_REG) |
7730 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 7731 | |
df58fc94 RS |
7732 | s = (mips_opts.micromips && (!mips_opts.noreorder || cprestore) |
7733 | ? "jalrs" : "jalr"); | |
7734 | if (mips_opts.micromips && dreg == RA) | |
7735 | macro_build (NULL, s, "mj", sreg); | |
7736 | else | |
7737 | macro_build (NULL, s, JALR_FMT, dreg, sreg); | |
0a44bf69 | 7738 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 7739 | { |
6478892d TS |
7740 | if (mips_cprestore_offset < 0) |
7741 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7742 | else | |
7743 | { | |
90ecf173 | 7744 | if (!mips_frame_reg_valid) |
7a621144 DJ |
7745 | { |
7746 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
7747 | /* Quiet this warning. */ | |
7748 | mips_frame_reg_valid = 1; | |
7749 | } | |
90ecf173 | 7750 | if (!mips_cprestore_valid) |
7a621144 DJ |
7751 | { |
7752 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7753 | /* Quiet this warning. */ | |
7754 | mips_cprestore_valid = 1; | |
7755 | } | |
d3fca0b5 MR |
7756 | if (mips_opts.noreorder) |
7757 | macro_build (NULL, "nop", ""); | |
6478892d | 7758 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 7759 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 7760 | mips_gp_register, |
256ab948 TS |
7761 | mips_frame_reg, |
7762 | HAVE_64BIT_ADDRESSES); | |
6478892d | 7763 | } |
252b5132 RH |
7764 | } |
7765 | } | |
252b5132 | 7766 | |
8fc2e39e | 7767 | break; |
252b5132 | 7768 | |
df58fc94 RS |
7769 | case M_JALS_A: |
7770 | gas_assert (mips_opts.micromips); | |
7771 | jals = 1; | |
7772 | /* Fall through. */ | |
252b5132 RH |
7773 | case M_JAL_A: |
7774 | if (mips_pic == NO_PIC) | |
df58fc94 | 7775 | macro_build (&offset_expr, jals ? "jals" : "jal", "a"); |
252b5132 RH |
7776 | else if (mips_pic == SVR4_PIC) |
7777 | { | |
7778 | /* If this is a reference to an external symbol, and we are | |
7779 | using a small GOT, we want | |
7780 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
7781 | nop | |
f9419b05 | 7782 | jalr $ra,$25 |
252b5132 RH |
7783 | nop |
7784 | lw $gp,cprestore($sp) | |
7785 | The cprestore value is set using the .cprestore | |
7786 | pseudo-op. If we are using a big GOT, we want | |
7787 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
7788 | addu $25,$25,$gp | |
7789 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
7790 | nop | |
f9419b05 | 7791 | jalr $ra,$25 |
252b5132 RH |
7792 | nop |
7793 | lw $gp,cprestore($sp) | |
7794 | If the symbol is not external, we want | |
7795 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7796 | nop | |
7797 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 7798 | jalr $ra,$25 |
252b5132 | 7799 | nop |
438c16b8 | 7800 | lw $gp,cprestore($sp) |
f5040a92 AO |
7801 | |
7802 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
7803 | sequences above, minus nops, unless the symbol is local, | |
7804 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
7805 | GOT_DISP. */ | |
438c16b8 | 7806 | if (HAVE_NEWABI) |
252b5132 | 7807 | { |
90ecf173 | 7808 | if (!mips_big_got) |
f5040a92 | 7809 | { |
4d7206a2 | 7810 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
7811 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7812 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 7813 | mips_gp_register); |
4d7206a2 | 7814 | relax_switch (); |
67c0d1eb RS |
7815 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7816 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
7817 | mips_gp_register); |
7818 | relax_end (); | |
f5040a92 AO |
7819 | } |
7820 | else | |
7821 | { | |
4d7206a2 | 7822 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 7823 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
7824 | BFD_RELOC_MIPS_CALL_HI16); |
7825 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
7826 | PIC_CALL_REG, mips_gp_register); | |
7827 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
7828 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
7829 | PIC_CALL_REG); | |
4d7206a2 | 7830 | relax_switch (); |
67c0d1eb RS |
7831 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7832 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
7833 | mips_gp_register); | |
7834 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
7835 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 7836 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 7837 | relax_end (); |
f5040a92 | 7838 | } |
684022ea | 7839 | |
df58fc94 | 7840 | macro_build_jalr (&offset_expr, 0); |
252b5132 RH |
7841 | } |
7842 | else | |
7843 | { | |
4d7206a2 | 7844 | relax_start (offset_expr.X_add_symbol); |
90ecf173 | 7845 | if (!mips_big_got) |
438c16b8 | 7846 | { |
67c0d1eb RS |
7847 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7848 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 7849 | mips_gp_register); |
269137b2 | 7850 | load_delay_nop (); |
4d7206a2 | 7851 | relax_switch (); |
438c16b8 | 7852 | } |
252b5132 | 7853 | else |
252b5132 | 7854 | { |
67c0d1eb RS |
7855 | int gpdelay; |
7856 | ||
7857 | gpdelay = reg_needs_delay (mips_gp_register); | |
df58fc94 | 7858 | macro_build (&offset_expr, "lui", LUI_FMT, PIC_CALL_REG, |
67c0d1eb RS |
7859 | BFD_RELOC_MIPS_CALL_HI16); |
7860 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
7861 | PIC_CALL_REG, mips_gp_register); | |
7862 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
7863 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
7864 | PIC_CALL_REG); | |
269137b2 | 7865 | load_delay_nop (); |
4d7206a2 | 7866 | relax_switch (); |
67c0d1eb RS |
7867 | if (gpdelay) |
7868 | macro_build (NULL, "nop", ""); | |
252b5132 | 7869 | } |
67c0d1eb RS |
7870 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
7871 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 7872 | mips_gp_register); |
269137b2 | 7873 | load_delay_nop (); |
67c0d1eb RS |
7874 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
7875 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 7876 | relax_end (); |
df58fc94 | 7877 | macro_build_jalr (&offset_expr, mips_cprestore_offset >= 0); |
438c16b8 | 7878 | |
6478892d TS |
7879 | if (mips_cprestore_offset < 0) |
7880 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7881 | else | |
7882 | { | |
90ecf173 | 7883 | if (!mips_frame_reg_valid) |
7a621144 DJ |
7884 | { |
7885 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
7886 | /* Quiet this warning. */ | |
7887 | mips_frame_reg_valid = 1; | |
7888 | } | |
90ecf173 | 7889 | if (!mips_cprestore_valid) |
7a621144 DJ |
7890 | { |
7891 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
7892 | /* Quiet this warning. */ | |
7893 | mips_cprestore_valid = 1; | |
7894 | } | |
6478892d | 7895 | if (mips_opts.noreorder) |
67c0d1eb | 7896 | macro_build (NULL, "nop", ""); |
6478892d | 7897 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 7898 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 7899 | mips_gp_register, |
256ab948 TS |
7900 | mips_frame_reg, |
7901 | HAVE_64BIT_ADDRESSES); | |
6478892d | 7902 | } |
252b5132 RH |
7903 | } |
7904 | } | |
0a44bf69 RS |
7905 | else if (mips_pic == VXWORKS_PIC) |
7906 | as_bad (_("Non-PIC jump used in PIC library")); | |
252b5132 RH |
7907 | else |
7908 | abort (); | |
7909 | ||
8fc2e39e | 7910 | break; |
252b5132 | 7911 | |
dec0624d MR |
7912 | case M_ACLR_AB: |
7913 | ab = 1; | |
7914 | case M_ACLR_OB: | |
7915 | s = "aclr"; | |
7916 | treg = EXTRACT_OPERAND (mips_opts.micromips, 3BITPOS, *ip); | |
7917 | fmt = "\\,~(b)"; | |
7918 | off12 = 1; | |
7919 | goto ld_st; | |
7920 | case M_ASET_AB: | |
7921 | ab = 1; | |
7922 | case M_ASET_OB: | |
7923 | s = "aset"; | |
7924 | treg = EXTRACT_OPERAND (mips_opts.micromips, 3BITPOS, *ip); | |
7925 | fmt = "\\,~(b)"; | |
7926 | off12 = 1; | |
7927 | goto ld_st; | |
252b5132 | 7928 | case M_LB_AB: |
df58fc94 | 7929 | ab = 1; |
252b5132 | 7930 | s = "lb"; |
df58fc94 | 7931 | fmt = "t,o(b)"; |
252b5132 RH |
7932 | goto ld; |
7933 | case M_LBU_AB: | |
df58fc94 | 7934 | ab = 1; |
252b5132 | 7935 | s = "lbu"; |
df58fc94 | 7936 | fmt = "t,o(b)"; |
252b5132 RH |
7937 | goto ld; |
7938 | case M_LH_AB: | |
df58fc94 | 7939 | ab = 1; |
252b5132 | 7940 | s = "lh"; |
df58fc94 | 7941 | fmt = "t,o(b)"; |
252b5132 RH |
7942 | goto ld; |
7943 | case M_LHU_AB: | |
df58fc94 | 7944 | ab = 1; |
252b5132 | 7945 | s = "lhu"; |
df58fc94 | 7946 | fmt = "t,o(b)"; |
252b5132 RH |
7947 | goto ld; |
7948 | case M_LW_AB: | |
df58fc94 | 7949 | ab = 1; |
252b5132 | 7950 | s = "lw"; |
df58fc94 | 7951 | fmt = "t,o(b)"; |
252b5132 RH |
7952 | goto ld; |
7953 | case M_LWC0_AB: | |
df58fc94 RS |
7954 | ab = 1; |
7955 | gas_assert (!mips_opts.micromips); | |
252b5132 | 7956 | s = "lwc0"; |
df58fc94 | 7957 | fmt = "E,o(b)"; |
bdaaa2e1 | 7958 | /* Itbl support may require additional care here. */ |
252b5132 | 7959 | coproc = 1; |
df58fc94 | 7960 | goto ld_st; |
252b5132 | 7961 | case M_LWC1_AB: |
df58fc94 | 7962 | ab = 1; |
252b5132 | 7963 | s = "lwc1"; |
df58fc94 | 7964 | fmt = "T,o(b)"; |
bdaaa2e1 | 7965 | /* Itbl support may require additional care here. */ |
252b5132 | 7966 | coproc = 1; |
df58fc94 | 7967 | goto ld_st; |
252b5132 | 7968 | case M_LWC2_AB: |
df58fc94 RS |
7969 | ab = 1; |
7970 | case M_LWC2_OB: | |
252b5132 | 7971 | s = "lwc2"; |
df58fc94 RS |
7972 | fmt = COP12_FMT; |
7973 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 7974 | /* Itbl support may require additional care here. */ |
252b5132 | 7975 | coproc = 1; |
df58fc94 | 7976 | goto ld_st; |
252b5132 | 7977 | case M_LWC3_AB: |
df58fc94 RS |
7978 | ab = 1; |
7979 | gas_assert (!mips_opts.micromips); | |
252b5132 | 7980 | s = "lwc3"; |
df58fc94 | 7981 | fmt = "E,o(b)"; |
bdaaa2e1 | 7982 | /* Itbl support may require additional care here. */ |
252b5132 | 7983 | coproc = 1; |
df58fc94 | 7984 | goto ld_st; |
252b5132 | 7985 | case M_LWL_AB: |
df58fc94 RS |
7986 | ab = 1; |
7987 | case M_LWL_OB: | |
252b5132 | 7988 | s = "lwl"; |
df58fc94 RS |
7989 | fmt = MEM12_FMT; |
7990 | off12 = mips_opts.micromips; | |
7991 | goto ld_st; | |
252b5132 | 7992 | case M_LWR_AB: |
df58fc94 RS |
7993 | ab = 1; |
7994 | case M_LWR_OB: | |
252b5132 | 7995 | s = "lwr"; |
df58fc94 RS |
7996 | fmt = MEM12_FMT; |
7997 | off12 = mips_opts.micromips; | |
7998 | goto ld_st; | |
252b5132 | 7999 | case M_LDC1_AB: |
df58fc94 | 8000 | ab = 1; |
252b5132 | 8001 | s = "ldc1"; |
df58fc94 | 8002 | fmt = "T,o(b)"; |
bdaaa2e1 | 8003 | /* Itbl support may require additional care here. */ |
252b5132 | 8004 | coproc = 1; |
df58fc94 | 8005 | goto ld_st; |
252b5132 | 8006 | case M_LDC2_AB: |
df58fc94 RS |
8007 | ab = 1; |
8008 | case M_LDC2_OB: | |
252b5132 | 8009 | s = "ldc2"; |
df58fc94 RS |
8010 | fmt = COP12_FMT; |
8011 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8012 | /* Itbl support may require additional care here. */ |
252b5132 | 8013 | coproc = 1; |
df58fc94 | 8014 | goto ld_st; |
252b5132 | 8015 | case M_LDC3_AB: |
df58fc94 | 8016 | ab = 1; |
252b5132 | 8017 | s = "ldc3"; |
df58fc94 | 8018 | fmt = "E,o(b)"; |
bdaaa2e1 | 8019 | /* Itbl support may require additional care here. */ |
252b5132 | 8020 | coproc = 1; |
df58fc94 | 8021 | goto ld_st; |
252b5132 | 8022 | case M_LDL_AB: |
df58fc94 RS |
8023 | ab = 1; |
8024 | case M_LDL_OB: | |
252b5132 | 8025 | s = "ldl"; |
df58fc94 RS |
8026 | fmt = MEM12_FMT; |
8027 | off12 = mips_opts.micromips; | |
8028 | goto ld_st; | |
252b5132 | 8029 | case M_LDR_AB: |
df58fc94 RS |
8030 | ab = 1; |
8031 | case M_LDR_OB: | |
252b5132 | 8032 | s = "ldr"; |
df58fc94 RS |
8033 | fmt = MEM12_FMT; |
8034 | off12 = mips_opts.micromips; | |
8035 | goto ld_st; | |
252b5132 | 8036 | case M_LL_AB: |
df58fc94 RS |
8037 | ab = 1; |
8038 | case M_LL_OB: | |
252b5132 | 8039 | s = "ll"; |
df58fc94 RS |
8040 | fmt = MEM12_FMT; |
8041 | off12 = mips_opts.micromips; | |
252b5132 RH |
8042 | goto ld; |
8043 | case M_LLD_AB: | |
df58fc94 RS |
8044 | ab = 1; |
8045 | case M_LLD_OB: | |
252b5132 | 8046 | s = "lld"; |
df58fc94 RS |
8047 | fmt = MEM12_FMT; |
8048 | off12 = mips_opts.micromips; | |
252b5132 RH |
8049 | goto ld; |
8050 | case M_LWU_AB: | |
df58fc94 RS |
8051 | ab = 1; |
8052 | case M_LWU_OB: | |
252b5132 | 8053 | s = "lwu"; |
df58fc94 RS |
8054 | fmt = MEM12_FMT; |
8055 | off12 = mips_opts.micromips; | |
8056 | goto ld; | |
8057 | case M_LWP_AB: | |
8058 | ab = 1; | |
8059 | case M_LWP_OB: | |
8060 | gas_assert (mips_opts.micromips); | |
8061 | s = "lwp"; | |
8062 | fmt = "t,~(b)"; | |
8063 | off12 = 1; | |
8064 | lp = 1; | |
8065 | goto ld; | |
8066 | case M_LDP_AB: | |
8067 | ab = 1; | |
8068 | case M_LDP_OB: | |
8069 | gas_assert (mips_opts.micromips); | |
8070 | s = "ldp"; | |
8071 | fmt = "t,~(b)"; | |
8072 | off12 = 1; | |
8073 | lp = 1; | |
8074 | goto ld; | |
8075 | case M_LWM_AB: | |
8076 | ab = 1; | |
8077 | case M_LWM_OB: | |
8078 | gas_assert (mips_opts.micromips); | |
8079 | s = "lwm"; | |
8080 | fmt = "n,~(b)"; | |
8081 | off12 = 1; | |
8082 | goto ld_st; | |
8083 | case M_LDM_AB: | |
8084 | ab = 1; | |
8085 | case M_LDM_OB: | |
8086 | gas_assert (mips_opts.micromips); | |
8087 | s = "ldm"; | |
8088 | fmt = "n,~(b)"; | |
8089 | off12 = 1; | |
8090 | goto ld_st; | |
8091 | ||
252b5132 | 8092 | ld: |
df58fc94 RS |
8093 | if (breg == treg + lp) |
8094 | goto ld_st; | |
252b5132 | 8095 | else |
df58fc94 RS |
8096 | tempreg = treg + lp; |
8097 | goto ld_noat; | |
8098 | ||
252b5132 | 8099 | case M_SB_AB: |
df58fc94 | 8100 | ab = 1; |
252b5132 | 8101 | s = "sb"; |
df58fc94 RS |
8102 | fmt = "t,o(b)"; |
8103 | goto ld_st; | |
252b5132 | 8104 | case M_SH_AB: |
df58fc94 | 8105 | ab = 1; |
252b5132 | 8106 | s = "sh"; |
df58fc94 RS |
8107 | fmt = "t,o(b)"; |
8108 | goto ld_st; | |
252b5132 | 8109 | case M_SW_AB: |
df58fc94 | 8110 | ab = 1; |
252b5132 | 8111 | s = "sw"; |
df58fc94 RS |
8112 | fmt = "t,o(b)"; |
8113 | goto ld_st; | |
252b5132 | 8114 | case M_SWC0_AB: |
df58fc94 RS |
8115 | ab = 1; |
8116 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8117 | s = "swc0"; |
df58fc94 | 8118 | fmt = "E,o(b)"; |
bdaaa2e1 | 8119 | /* Itbl support may require additional care here. */ |
252b5132 | 8120 | coproc = 1; |
df58fc94 | 8121 | goto ld_st; |
252b5132 | 8122 | case M_SWC1_AB: |
df58fc94 | 8123 | ab = 1; |
252b5132 | 8124 | s = "swc1"; |
df58fc94 | 8125 | fmt = "T,o(b)"; |
bdaaa2e1 | 8126 | /* Itbl support may require additional care here. */ |
252b5132 | 8127 | coproc = 1; |
df58fc94 | 8128 | goto ld_st; |
252b5132 | 8129 | case M_SWC2_AB: |
df58fc94 RS |
8130 | ab = 1; |
8131 | case M_SWC2_OB: | |
252b5132 | 8132 | s = "swc2"; |
df58fc94 RS |
8133 | fmt = COP12_FMT; |
8134 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8135 | /* Itbl support may require additional care here. */ |
252b5132 | 8136 | coproc = 1; |
df58fc94 | 8137 | goto ld_st; |
252b5132 | 8138 | case M_SWC3_AB: |
df58fc94 RS |
8139 | ab = 1; |
8140 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8141 | s = "swc3"; |
df58fc94 | 8142 | fmt = "E,o(b)"; |
bdaaa2e1 | 8143 | /* Itbl support may require additional care here. */ |
252b5132 | 8144 | coproc = 1; |
df58fc94 | 8145 | goto ld_st; |
252b5132 | 8146 | case M_SWL_AB: |
df58fc94 RS |
8147 | ab = 1; |
8148 | case M_SWL_OB: | |
252b5132 | 8149 | s = "swl"; |
df58fc94 RS |
8150 | fmt = MEM12_FMT; |
8151 | off12 = mips_opts.micromips; | |
8152 | goto ld_st; | |
252b5132 | 8153 | case M_SWR_AB: |
df58fc94 RS |
8154 | ab = 1; |
8155 | case M_SWR_OB: | |
252b5132 | 8156 | s = "swr"; |
df58fc94 RS |
8157 | fmt = MEM12_FMT; |
8158 | off12 = mips_opts.micromips; | |
8159 | goto ld_st; | |
252b5132 | 8160 | case M_SC_AB: |
df58fc94 RS |
8161 | ab = 1; |
8162 | case M_SC_OB: | |
252b5132 | 8163 | s = "sc"; |
df58fc94 RS |
8164 | fmt = MEM12_FMT; |
8165 | off12 = mips_opts.micromips; | |
8166 | goto ld_st; | |
252b5132 | 8167 | case M_SCD_AB: |
df58fc94 RS |
8168 | ab = 1; |
8169 | case M_SCD_OB: | |
252b5132 | 8170 | s = "scd"; |
df58fc94 RS |
8171 | fmt = MEM12_FMT; |
8172 | off12 = mips_opts.micromips; | |
8173 | goto ld_st; | |
d43b4baf | 8174 | case M_CACHE_AB: |
df58fc94 RS |
8175 | ab = 1; |
8176 | case M_CACHE_OB: | |
d43b4baf | 8177 | s = "cache"; |
df58fc94 RS |
8178 | fmt = mips_opts.micromips ? "k,~(b)" : "k,o(b)"; |
8179 | off12 = mips_opts.micromips; | |
8180 | goto ld_st; | |
3eebd5eb | 8181 | case M_PREF_AB: |
df58fc94 RS |
8182 | ab = 1; |
8183 | case M_PREF_OB: | |
3eebd5eb | 8184 | s = "pref"; |
df58fc94 RS |
8185 | fmt = !mips_opts.micromips ? "k,o(b)" : "k,~(b)"; |
8186 | off12 = mips_opts.micromips; | |
8187 | goto ld_st; | |
252b5132 | 8188 | case M_SDC1_AB: |
df58fc94 | 8189 | ab = 1; |
252b5132 | 8190 | s = "sdc1"; |
df58fc94 | 8191 | fmt = "T,o(b)"; |
252b5132 | 8192 | coproc = 1; |
bdaaa2e1 | 8193 | /* Itbl support may require additional care here. */ |
df58fc94 | 8194 | goto ld_st; |
252b5132 | 8195 | case M_SDC2_AB: |
df58fc94 RS |
8196 | ab = 1; |
8197 | case M_SDC2_OB: | |
252b5132 | 8198 | s = "sdc2"; |
df58fc94 RS |
8199 | fmt = COP12_FMT; |
8200 | off12 = mips_opts.micromips; | |
bdaaa2e1 | 8201 | /* Itbl support may require additional care here. */ |
252b5132 | 8202 | coproc = 1; |
df58fc94 | 8203 | goto ld_st; |
252b5132 | 8204 | case M_SDC3_AB: |
df58fc94 RS |
8205 | ab = 1; |
8206 | gas_assert (!mips_opts.micromips); | |
252b5132 | 8207 | s = "sdc3"; |
df58fc94 | 8208 | fmt = "E,o(b)"; |
bdaaa2e1 | 8209 | /* Itbl support may require additional care here. */ |
252b5132 | 8210 | coproc = 1; |
df58fc94 | 8211 | goto ld_st; |
252b5132 | 8212 | case M_SDL_AB: |
df58fc94 RS |
8213 | ab = 1; |
8214 | case M_SDL_OB: | |
252b5132 | 8215 | s = "sdl"; |
df58fc94 RS |
8216 | fmt = MEM12_FMT; |
8217 | off12 = mips_opts.micromips; | |
8218 | goto ld_st; | |
252b5132 | 8219 | case M_SDR_AB: |
df58fc94 RS |
8220 | ab = 1; |
8221 | case M_SDR_OB: | |
252b5132 | 8222 | s = "sdr"; |
df58fc94 RS |
8223 | fmt = MEM12_FMT; |
8224 | off12 = mips_opts.micromips; | |
8225 | goto ld_st; | |
8226 | case M_SWP_AB: | |
8227 | ab = 1; | |
8228 | case M_SWP_OB: | |
8229 | gas_assert (mips_opts.micromips); | |
8230 | s = "swp"; | |
8231 | fmt = "t,~(b)"; | |
8232 | off12 = 1; | |
8233 | goto ld_st; | |
8234 | case M_SDP_AB: | |
8235 | ab = 1; | |
8236 | case M_SDP_OB: | |
8237 | gas_assert (mips_opts.micromips); | |
8238 | s = "sdp"; | |
8239 | fmt = "t,~(b)"; | |
8240 | off12 = 1; | |
8241 | goto ld_st; | |
8242 | case M_SWM_AB: | |
8243 | ab = 1; | |
8244 | case M_SWM_OB: | |
8245 | gas_assert (mips_opts.micromips); | |
8246 | s = "swm"; | |
8247 | fmt = "n,~(b)"; | |
8248 | off12 = 1; | |
8249 | goto ld_st; | |
8250 | case M_SDM_AB: | |
8251 | ab = 1; | |
8252 | case M_SDM_OB: | |
8253 | gas_assert (mips_opts.micromips); | |
8254 | s = "sdm"; | |
8255 | fmt = "n,~(b)"; | |
8256 | off12 = 1; | |
8257 | ||
8258 | ld_st: | |
8fc2e39e TS |
8259 | tempreg = AT; |
8260 | used_at = 1; | |
df58fc94 | 8261 | ld_noat: |
b19e8a9b AN |
8262 | if (coproc |
8263 | && NO_ISA_COP (mips_opts.arch) | |
8264 | && (ip->insn_mo->pinfo2 & (INSN2_M_FP_S | INSN2_M_FP_D)) == 0) | |
8265 | { | |
f71d0d44 | 8266 | as_bad (_("Opcode not supported on this processor: %s"), |
b19e8a9b AN |
8267 | mips_cpu_info_from_arch (mips_opts.arch)->name); |
8268 | break; | |
8269 | } | |
8270 | ||
252b5132 RH |
8271 | if (offset_expr.X_op != O_constant |
8272 | && offset_expr.X_op != O_symbol) | |
8273 | { | |
f71d0d44 | 8274 | as_bad (_("Expression too complex")); |
252b5132 RH |
8275 | offset_expr.X_op = O_constant; |
8276 | } | |
8277 | ||
2051e8c4 MR |
8278 | if (HAVE_32BIT_ADDRESSES |
8279 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
8280 | { |
8281 | char value [32]; | |
8282 | ||
8283 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 8284 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 8285 | } |
2051e8c4 | 8286 | |
252b5132 RH |
8287 | /* A constant expression in PIC code can be handled just as it |
8288 | is in non PIC code. */ | |
aed1a261 RS |
8289 | if (offset_expr.X_op == O_constant) |
8290 | { | |
df58fc94 RS |
8291 | int hipart = 0; |
8292 | ||
842f8b2a | 8293 | expr1.X_add_number = offset_expr.X_add_number; |
2051e8c4 | 8294 | normalize_address_expr (&expr1); |
df58fc94 | 8295 | if (!off12 && !IS_SEXT_16BIT_NUM (expr1.X_add_number)) |
842f8b2a MR |
8296 | { |
8297 | expr1.X_add_number = ((expr1.X_add_number + 0x8000) | |
8298 | & ~(bfd_vma) 0xffff); | |
df58fc94 RS |
8299 | hipart = 1; |
8300 | } | |
8301 | else if (off12 && !IS_SEXT_12BIT_NUM (expr1.X_add_number)) | |
8302 | { | |
8303 | expr1.X_add_number = ((expr1.X_add_number + 0x800) | |
8304 | & ~(bfd_vma) 0xfff); | |
8305 | hipart = 1; | |
8306 | } | |
8307 | if (hipart) | |
8308 | { | |
842f8b2a MR |
8309 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
8310 | if (breg != 0) | |
8311 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8312 | tempreg, tempreg, breg); | |
8313 | breg = tempreg; | |
8314 | } | |
dd6a37e7 AP |
8315 | if (off0) |
8316 | { | |
8317 | if (offset_expr.X_add_number == 0) | |
8318 | tempreg = breg; | |
8319 | else | |
8320 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, | |
8321 | "t,r,j", tempreg, breg, BFD_RELOC_LO16); | |
8322 | macro_build (NULL, s, fmt, treg, tempreg); | |
8323 | } | |
8324 | else if (!off12) | |
df58fc94 RS |
8325 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, breg); |
8326 | else | |
8327 | macro_build (NULL, s, fmt, | |
8328 | treg, (unsigned long) offset_expr.X_add_number, breg); | |
8329 | } | |
dd6a37e7 | 8330 | else if (off12 || off0) |
df58fc94 | 8331 | { |
dd6a37e7 AP |
8332 | /* A 12-bit or 0-bit offset field is too narrow to be used |
8333 | for a low-part relocation, so load the whole address into | |
8334 | the auxillary register. In the case of "A(b)" addresses, | |
8335 | we first load absolute address "A" into the register and | |
8336 | then add base register "b". In the case of "o(b)" addresses, | |
8337 | we simply need to add 16-bit offset "o" to base register "b", and | |
df58fc94 RS |
8338 | offset_reloc already contains the relocations associated |
8339 | with "o". */ | |
8340 | if (ab) | |
8341 | { | |
8342 | load_address (tempreg, &offset_expr, &used_at); | |
8343 | if (breg != 0) | |
8344 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8345 | tempreg, tempreg, breg); | |
8346 | } | |
8347 | else | |
8348 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
8349 | tempreg, breg, -1, | |
8350 | offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
8351 | expr1.X_add_number = 0; | |
dd6a37e7 AP |
8352 | if (off0) |
8353 | macro_build (NULL, s, fmt, treg, tempreg); | |
8354 | else | |
8355 | macro_build (NULL, s, fmt, | |
8356 | treg, (unsigned long) expr1.X_add_number, tempreg); | |
aed1a261 RS |
8357 | } |
8358 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
8359 | { |
8360 | /* If this is a reference to a GP relative symbol, and there | |
8361 | is no base register, we want | |
cdf6fd85 | 8362 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
8363 | Otherwise, if there is no base register, we want |
8364 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8365 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8366 | If we have a constant, we need two instructions anyhow, | |
8367 | so we always use the latter form. | |
8368 | ||
8369 | If we have a base register, and this is a reference to a | |
8370 | GP relative symbol, we want | |
8371 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 8372 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
8373 | Otherwise we want |
8374 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8375 | addu $tempreg,$tempreg,$breg | |
8376 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 8377 | With a constant we always use the latter case. |
76b3015f | 8378 | |
d6bc6245 TS |
8379 | With 64bit address space and no base register and $at usable, |
8380 | we want | |
8381 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8382 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8383 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8384 | dsll32 $tempreg,0 | |
8385 | daddu $tempreg,$at | |
8386 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8387 | If we have a base register, we want | |
8388 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8389 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8390 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8391 | daddu $at,$breg | |
8392 | dsll32 $tempreg,0 | |
8393 | daddu $tempreg,$at | |
8394 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8395 | ||
8396 | Without $at we can't generate the optimal path for superscalar | |
8397 | processors here since this would require two temporary registers. | |
8398 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8399 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8400 | dsll $tempreg,16 | |
8401 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8402 | dsll $tempreg,16 | |
8403 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
8404 | If we have a base register, we want | |
8405 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
8406 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
8407 | dsll $tempreg,16 | |
8408 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
8409 | dsll $tempreg,16 | |
8410 | daddu $tempreg,$tempreg,$breg | |
8411 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 | 8412 | |
6caf9ef4 | 8413 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
8414 | the same sequence as in 32bit address space. */ |
8415 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 8416 | { |
aed1a261 | 8417 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
8418 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
8419 | { | |
8420 | relax_start (offset_expr.X_add_symbol); | |
8421 | if (breg == 0) | |
8422 | { | |
8423 | macro_build (&offset_expr, s, fmt, treg, | |
8424 | BFD_RELOC_GPREL16, mips_gp_register); | |
8425 | } | |
8426 | else | |
8427 | { | |
8428 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
8429 | tempreg, breg, mips_gp_register); | |
8430 | macro_build (&offset_expr, s, fmt, treg, | |
8431 | BFD_RELOC_GPREL16, tempreg); | |
8432 | } | |
8433 | relax_switch (); | |
8434 | } | |
d6bc6245 | 8435 | |
741fe287 | 8436 | if (used_at == 0 && mips_opts.at) |
d6bc6245 | 8437 | { |
df58fc94 | 8438 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb | 8439 | BFD_RELOC_MIPS_HIGHEST); |
df58fc94 | 8440 | macro_build (&offset_expr, "lui", LUI_FMT, AT, |
67c0d1eb RS |
8441 | BFD_RELOC_HI16_S); |
8442 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
8443 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 8444 | if (breg != 0) |
67c0d1eb | 8445 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
df58fc94 | 8446 | macro_build (NULL, "dsll32", SHFT_FMT, tempreg, tempreg, 0); |
67c0d1eb RS |
8447 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); |
8448 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, | |
8449 | tempreg); | |
d6bc6245 TS |
8450 | used_at = 1; |
8451 | } | |
8452 | else | |
8453 | { | |
df58fc94 | 8454 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
67c0d1eb RS |
8455 | BFD_RELOC_MIPS_HIGHEST); |
8456 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
8457 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
df58fc94 | 8458 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
67c0d1eb RS |
8459 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, |
8460 | tempreg, BFD_RELOC_HI16_S); | |
df58fc94 | 8461 | macro_build (NULL, "dsll", SHFT_FMT, tempreg, tempreg, 16); |
d6bc6245 | 8462 | if (breg != 0) |
67c0d1eb | 8463 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 8464 | tempreg, tempreg, breg); |
67c0d1eb | 8465 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8466 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 8467 | } |
6caf9ef4 TS |
8468 | |
8469 | if (mips_relax.sequence) | |
8470 | relax_end (); | |
8fc2e39e | 8471 | break; |
d6bc6245 | 8472 | } |
256ab948 | 8473 | |
252b5132 RH |
8474 | if (breg == 0) |
8475 | { | |
67c0d1eb | 8476 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 8477 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8478 | { |
4d7206a2 | 8479 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
8480 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_GPREL16, |
8481 | mips_gp_register); | |
4d7206a2 | 8482 | relax_switch (); |
252b5132 | 8483 | } |
67c0d1eb RS |
8484 | macro_build_lui (&offset_expr, tempreg); |
8485 | macro_build (&offset_expr, s, fmt, treg, | |
17a2f251 | 8486 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
8487 | if (mips_relax.sequence) |
8488 | relax_end (); | |
252b5132 RH |
8489 | } |
8490 | else | |
8491 | { | |
67c0d1eb | 8492 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 8493 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8494 | { |
4d7206a2 | 8495 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 8496 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8497 | tempreg, breg, mips_gp_register); |
67c0d1eb | 8498 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8499 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 8500 | relax_switch (); |
252b5132 | 8501 | } |
67c0d1eb RS |
8502 | macro_build_lui (&offset_expr, tempreg); |
8503 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 8504 | tempreg, tempreg, breg); |
67c0d1eb | 8505 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8506 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
8507 | if (mips_relax.sequence) |
8508 | relax_end (); | |
252b5132 RH |
8509 | } |
8510 | } | |
0a44bf69 | 8511 | else if (!mips_big_got) |
252b5132 | 8512 | { |
ed6fb7bd | 8513 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 8514 | |
252b5132 RH |
8515 | /* If this is a reference to an external symbol, we want |
8516 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8517 | nop | |
8518 | <op> $treg,0($tempreg) | |
8519 | Otherwise we want | |
8520 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8521 | nop | |
8522 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
8523 | <op> $treg,0($tempreg) | |
f5040a92 AO |
8524 | |
8525 | For NewABI, we want | |
8526 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
8527 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) | |
8528 | ||
252b5132 RH |
8529 | If there is a base register, we add it to $tempreg before |
8530 | the <op>. If there is a constant, we stick it in the | |
8531 | <op> instruction. We don't handle constants larger than | |
8532 | 16 bits, because we have no way to load the upper 16 bits | |
8533 | (actually, we could handle them for the subset of cases | |
8534 | in which we are not using $at). */ | |
9c2799c2 | 8535 | gas_assert (offset_expr.X_op == O_symbol); |
f5040a92 AO |
8536 | if (HAVE_NEWABI) |
8537 | { | |
67c0d1eb RS |
8538 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8539 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 8540 | if (breg != 0) |
67c0d1eb | 8541 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8542 | tempreg, tempreg, breg); |
67c0d1eb | 8543 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8544 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
8545 | break; |
8546 | } | |
252b5132 RH |
8547 | expr1.X_add_number = offset_expr.X_add_number; |
8548 | offset_expr.X_add_number = 0; | |
8549 | if (expr1.X_add_number < -0x8000 | |
8550 | || expr1.X_add_number >= 0x8000) | |
8551 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
8552 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8553 | lw_reloc_type, mips_gp_register); | |
269137b2 | 8554 | load_delay_nop (); |
4d7206a2 RS |
8555 | relax_start (offset_expr.X_add_symbol); |
8556 | relax_switch (); | |
67c0d1eb RS |
8557 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
8558 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 8559 | relax_end (); |
252b5132 | 8560 | if (breg != 0) |
67c0d1eb | 8561 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8562 | tempreg, tempreg, breg); |
67c0d1eb | 8563 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 8564 | } |
0a44bf69 | 8565 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 8566 | { |
67c0d1eb | 8567 | int gpdelay; |
252b5132 RH |
8568 | |
8569 | /* If this is a reference to an external symbol, we want | |
8570 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8571 | addu $tempreg,$tempreg,$gp | |
8572 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
8573 | <op> $treg,0($tempreg) | |
8574 | Otherwise we want | |
8575 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
8576 | nop | |
8577 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
8578 | <op> $treg,0($tempreg) | |
8579 | If there is a base register, we add it to $tempreg before | |
8580 | the <op>. If there is a constant, we stick it in the | |
8581 | <op> instruction. We don't handle constants larger than | |
8582 | 16 bits, because we have no way to load the upper 16 bits | |
8583 | (actually, we could handle them for the subset of cases | |
f5040a92 | 8584 | in which we are not using $at). */ |
9c2799c2 | 8585 | gas_assert (offset_expr.X_op == O_symbol); |
252b5132 RH |
8586 | expr1.X_add_number = offset_expr.X_add_number; |
8587 | offset_expr.X_add_number = 0; | |
8588 | if (expr1.X_add_number < -0x8000 | |
8589 | || expr1.X_add_number >= 0x8000) | |
8590 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 8591 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 8592 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 8593 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 8594 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8595 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
8596 | mips_gp_register); | |
8597 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8598 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 8599 | relax_switch (); |
67c0d1eb RS |
8600 | if (gpdelay) |
8601 | macro_build (NULL, "nop", ""); | |
8602 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8603 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 8604 | load_delay_nop (); |
67c0d1eb RS |
8605 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
8606 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
8607 | relax_end (); |
8608 | ||
252b5132 | 8609 | if (breg != 0) |
67c0d1eb | 8610 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8611 | tempreg, tempreg, breg); |
67c0d1eb | 8612 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 8613 | } |
0a44bf69 | 8614 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 8615 | { |
f5040a92 AO |
8616 | /* If this is a reference to an external symbol, we want |
8617 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
8618 | add $tempreg,$tempreg,$gp | |
8619 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
8620 | <op> $treg,<ofst>($tempreg) | |
8621 | Otherwise, for local symbols, we want: | |
8622 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
8623 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ | |
9c2799c2 | 8624 | gas_assert (offset_expr.X_op == O_symbol); |
4d7206a2 | 8625 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
8626 | offset_expr.X_add_number = 0; |
8627 | if (expr1.X_add_number < -0x8000 | |
8628 | || expr1.X_add_number >= 0x8000) | |
8629 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 8630 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 8631 | macro_build (&offset_expr, "lui", LUI_FMT, tempreg, |
17a2f251 | 8632 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
8633 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
8634 | mips_gp_register); | |
8635 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
8636 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 8637 | if (breg != 0) |
67c0d1eb | 8638 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8639 | tempreg, tempreg, breg); |
67c0d1eb | 8640 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
684022ea | 8641 | |
4d7206a2 | 8642 | relax_switch (); |
f5040a92 | 8643 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
8644 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
8645 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 8646 | if (breg != 0) |
67c0d1eb | 8647 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8648 | tempreg, tempreg, breg); |
67c0d1eb | 8649 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 8650 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 8651 | relax_end (); |
f5040a92 | 8652 | } |
252b5132 RH |
8653 | else |
8654 | abort (); | |
8655 | ||
252b5132 RH |
8656 | break; |
8657 | ||
8658 | case M_LI: | |
8659 | case M_LI_S: | |
67c0d1eb | 8660 | load_register (treg, &imm_expr, 0); |
8fc2e39e | 8661 | break; |
252b5132 RH |
8662 | |
8663 | case M_DLI: | |
67c0d1eb | 8664 | load_register (treg, &imm_expr, 1); |
8fc2e39e | 8665 | break; |
252b5132 RH |
8666 | |
8667 | case M_LI_SS: | |
8668 | if (imm_expr.X_op == O_constant) | |
8669 | { | |
8fc2e39e | 8670 | used_at = 1; |
67c0d1eb RS |
8671 | load_register (AT, &imm_expr, 0); |
8672 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
8673 | break; |
8674 | } | |
8675 | else | |
8676 | { | |
9c2799c2 | 8677 | gas_assert (offset_expr.X_op == O_symbol |
90ecf173 MR |
8678 | && strcmp (segment_name (S_GET_SEGMENT |
8679 | (offset_expr.X_add_symbol)), | |
8680 | ".lit4") == 0 | |
8681 | && offset_expr.X_add_number == 0); | |
67c0d1eb | 8682 | macro_build (&offset_expr, "lwc1", "T,o(b)", treg, |
17a2f251 | 8683 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 8684 | break; |
252b5132 RH |
8685 | } |
8686 | ||
8687 | case M_LI_D: | |
ca4e0257 RS |
8688 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
8689 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
8690 | order 32 bits of the value and the low order 32 bits are either | |
8691 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
8692 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
8693 | { | |
ca4e0257 | 8694 | if (HAVE_64BIT_GPRS) |
67c0d1eb | 8695 | load_register (treg, &imm_expr, 1); |
252b5132 RH |
8696 | else |
8697 | { | |
8698 | int hreg, lreg; | |
8699 | ||
8700 | if (target_big_endian) | |
8701 | { | |
8702 | hreg = treg; | |
8703 | lreg = treg + 1; | |
8704 | } | |
8705 | else | |
8706 | { | |
8707 | hreg = treg + 1; | |
8708 | lreg = treg; | |
8709 | } | |
8710 | ||
8711 | if (hreg <= 31) | |
67c0d1eb | 8712 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
8713 | if (lreg <= 31) |
8714 | { | |
8715 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 8716 | move_register (lreg, 0); |
252b5132 RH |
8717 | else |
8718 | { | |
9c2799c2 | 8719 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb | 8720 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
8721 | } |
8722 | } | |
8723 | } | |
8fc2e39e | 8724 | break; |
252b5132 RH |
8725 | } |
8726 | ||
8727 | /* We know that sym is in the .rdata section. First we get the | |
8728 | upper 16 bits of the address. */ | |
8729 | if (mips_pic == NO_PIC) | |
8730 | { | |
67c0d1eb | 8731 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 8732 | used_at = 1; |
252b5132 | 8733 | } |
0a44bf69 | 8734 | else |
252b5132 | 8735 | { |
67c0d1eb RS |
8736 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
8737 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 8738 | used_at = 1; |
252b5132 | 8739 | } |
bdaaa2e1 | 8740 | |
252b5132 | 8741 | /* Now we load the register(s). */ |
ca4e0257 | 8742 | if (HAVE_64BIT_GPRS) |
8fc2e39e TS |
8743 | { |
8744 | used_at = 1; | |
8745 | macro_build (&offset_expr, "ld", "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
8746 | } | |
252b5132 RH |
8747 | else |
8748 | { | |
8fc2e39e | 8749 | used_at = 1; |
67c0d1eb | 8750 | macro_build (&offset_expr, "lw", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
f9419b05 | 8751 | if (treg != RA) |
252b5132 RH |
8752 | { |
8753 | /* FIXME: How in the world do we deal with the possible | |
8754 | overflow here? */ | |
8755 | offset_expr.X_add_number += 4; | |
67c0d1eb | 8756 | macro_build (&offset_expr, "lw", "t,o(b)", |
17a2f251 | 8757 | treg + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
8758 | } |
8759 | } | |
252b5132 RH |
8760 | break; |
8761 | ||
8762 | case M_LI_DD: | |
ca4e0257 RS |
8763 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
8764 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
8765 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
8766 | the value and the low order 32 bits are either zero or in | |
8767 | OFFSET_EXPR. */ | |
252b5132 RH |
8768 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
8769 | { | |
8fc2e39e | 8770 | used_at = 1; |
67c0d1eb | 8771 | load_register (AT, &imm_expr, HAVE_64BIT_FPRS); |
ca4e0257 RS |
8772 | if (HAVE_64BIT_FPRS) |
8773 | { | |
9c2799c2 | 8774 | gas_assert (HAVE_64BIT_GPRS); |
67c0d1eb | 8775 | macro_build (NULL, "dmtc1", "t,S", AT, treg); |
ca4e0257 | 8776 | } |
252b5132 RH |
8777 | else |
8778 | { | |
67c0d1eb | 8779 | macro_build (NULL, "mtc1", "t,G", AT, treg + 1); |
252b5132 | 8780 | if (offset_expr.X_op == O_absent) |
67c0d1eb | 8781 | macro_build (NULL, "mtc1", "t,G", 0, treg); |
252b5132 RH |
8782 | else |
8783 | { | |
9c2799c2 | 8784 | gas_assert (offset_expr.X_op == O_constant); |
67c0d1eb RS |
8785 | load_register (AT, &offset_expr, 0); |
8786 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
8787 | } |
8788 | } | |
8789 | break; | |
8790 | } | |
8791 | ||
9c2799c2 | 8792 | gas_assert (offset_expr.X_op == O_symbol |
90ecf173 | 8793 | && offset_expr.X_add_number == 0); |
252b5132 RH |
8794 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); |
8795 | if (strcmp (s, ".lit8") == 0) | |
8796 | { | |
df58fc94 | 8797 | if (mips_opts.isa != ISA_MIPS1 || mips_opts.micromips) |
252b5132 | 8798 | { |
67c0d1eb | 8799 | macro_build (&offset_expr, "ldc1", "T,o(b)", treg, |
17a2f251 | 8800 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 8801 | break; |
252b5132 | 8802 | } |
c9914766 | 8803 | breg = mips_gp_register; |
252b5132 RH |
8804 | r = BFD_RELOC_MIPS_LITERAL; |
8805 | goto dob; | |
8806 | } | |
8807 | else | |
8808 | { | |
9c2799c2 | 8809 | gas_assert (strcmp (s, RDATA_SECTION_NAME) == 0); |
8fc2e39e | 8810 | used_at = 1; |
0a44bf69 | 8811 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
8812 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
8813 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
8814 | else |
8815 | { | |
8816 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 8817 | macro_build_lui (&offset_expr, AT); |
252b5132 | 8818 | } |
bdaaa2e1 | 8819 | |
df58fc94 | 8820 | if (mips_opts.isa != ISA_MIPS1 || mips_opts.micromips) |
252b5132 | 8821 | { |
67c0d1eb RS |
8822 | macro_build (&offset_expr, "ldc1", "T,o(b)", |
8823 | treg, BFD_RELOC_LO16, AT); | |
252b5132 RH |
8824 | break; |
8825 | } | |
8826 | breg = AT; | |
8827 | r = BFD_RELOC_LO16; | |
8828 | goto dob; | |
8829 | } | |
8830 | ||
8831 | case M_L_DOB: | |
252b5132 RH |
8832 | /* Even on a big endian machine $fn comes before $fn+1. We have |
8833 | to adjust when loading from memory. */ | |
8834 | r = BFD_RELOC_LO16; | |
8835 | dob: | |
df58fc94 | 8836 | gas_assert (!mips_opts.micromips); |
9c2799c2 | 8837 | gas_assert (mips_opts.isa == ISA_MIPS1); |
67c0d1eb | 8838 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 8839 | target_big_endian ? treg + 1 : treg, r, breg); |
252b5132 RH |
8840 | /* FIXME: A possible overflow which I don't know how to deal |
8841 | with. */ | |
8842 | offset_expr.X_add_number += 4; | |
67c0d1eb | 8843 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 8844 | target_big_endian ? treg : treg + 1, r, breg); |
252b5132 RH |
8845 | break; |
8846 | ||
c4a68bea | 8847 | case M_S_DOB: |
df58fc94 | 8848 | gas_assert (!mips_opts.micromips); |
c4a68bea MR |
8849 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8850 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
8851 | to adjust when storing to memory. */ | |
8852 | macro_build (&offset_expr, "swc1", "T,o(b)", | |
8853 | target_big_endian ? treg + 1 : treg, BFD_RELOC_LO16, breg); | |
8854 | offset_expr.X_add_number += 4; | |
8855 | macro_build (&offset_expr, "swc1", "T,o(b)", | |
8856 | target_big_endian ? treg : treg + 1, BFD_RELOC_LO16, breg); | |
8857 | break; | |
8858 | ||
252b5132 | 8859 | case M_L_DAB: |
df58fc94 | 8860 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
8861 | /* |
8862 | * The MIPS assembler seems to check for X_add_number not | |
8863 | * being double aligned and generating: | |
8864 | * lui at,%hi(foo+1) | |
8865 | * addu at,at,v1 | |
8866 | * addiu at,at,%lo(foo+1) | |
8867 | * lwc1 f2,0(at) | |
8868 | * lwc1 f3,4(at) | |
8869 | * But, the resulting address is the same after relocation so why | |
8870 | * generate the extra instruction? | |
8871 | */ | |
bdaaa2e1 | 8872 | /* Itbl support may require additional care here. */ |
252b5132 | 8873 | coproc = 1; |
df58fc94 | 8874 | fmt = "T,o(b)"; |
e7af610e | 8875 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
8876 | { |
8877 | s = "ldc1"; | |
df58fc94 | 8878 | goto ld_st; |
252b5132 | 8879 | } |
252b5132 | 8880 | s = "lwc1"; |
252b5132 RH |
8881 | goto ldd_std; |
8882 | ||
8883 | case M_S_DAB: | |
df58fc94 RS |
8884 | gas_assert (!mips_opts.micromips); |
8885 | /* Itbl support may require additional care here. */ | |
8886 | coproc = 1; | |
8887 | fmt = "T,o(b)"; | |
e7af610e | 8888 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
8889 | { |
8890 | s = "sdc1"; | |
df58fc94 | 8891 | goto ld_st; |
252b5132 | 8892 | } |
252b5132 | 8893 | s = "swc1"; |
252b5132 RH |
8894 | goto ldd_std; |
8895 | ||
8896 | case M_LD_AB: | |
df58fc94 | 8897 | fmt = "t,o(b)"; |
ca4e0257 | 8898 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
8899 | { |
8900 | s = "ld"; | |
8901 | goto ld; | |
8902 | } | |
252b5132 | 8903 | s = "lw"; |
252b5132 RH |
8904 | goto ldd_std; |
8905 | ||
8906 | case M_SD_AB: | |
df58fc94 | 8907 | fmt = "t,o(b)"; |
ca4e0257 | 8908 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
8909 | { |
8910 | s = "sd"; | |
df58fc94 | 8911 | goto ld_st; |
252b5132 | 8912 | } |
252b5132 | 8913 | s = "sw"; |
252b5132 RH |
8914 | |
8915 | ldd_std: | |
8916 | if (offset_expr.X_op != O_symbol | |
8917 | && offset_expr.X_op != O_constant) | |
8918 | { | |
f71d0d44 | 8919 | as_bad (_("Expression too complex")); |
252b5132 RH |
8920 | offset_expr.X_op = O_constant; |
8921 | } | |
8922 | ||
2051e8c4 MR |
8923 | if (HAVE_32BIT_ADDRESSES |
8924 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
8925 | { |
8926 | char value [32]; | |
8927 | ||
8928 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 8929 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 8930 | } |
2051e8c4 | 8931 | |
252b5132 RH |
8932 | /* Even on a big endian machine $fn comes before $fn+1. We have |
8933 | to adjust when loading from memory. We set coproc if we must | |
8934 | load $fn+1 first. */ | |
bdaaa2e1 | 8935 | /* Itbl support may require additional care here. */ |
90ecf173 | 8936 | if (!target_big_endian) |
252b5132 RH |
8937 | coproc = 0; |
8938 | ||
90ecf173 | 8939 | if (mips_pic == NO_PIC || offset_expr.X_op == O_constant) |
252b5132 RH |
8940 | { |
8941 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 TS |
8942 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
8943 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
8944 | If we have a base register, we use this |
8945 | addu $at,$breg,$gp | |
cdf6fd85 TS |
8946 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
8947 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
8948 | If this is not a GP relative symbol, we want |
8949 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
8950 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
8951 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
8952 | If there is a base register, we add it to $at after the | |
8953 | lui instruction. If there is a constant, we always use | |
8954 | the last case. */ | |
39a59cf8 MR |
8955 | if (offset_expr.X_op == O_symbol |
8956 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 8957 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 8958 | { |
4d7206a2 | 8959 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
8960 | if (breg == 0) |
8961 | { | |
c9914766 | 8962 | tempreg = mips_gp_register; |
252b5132 RH |
8963 | } |
8964 | else | |
8965 | { | |
67c0d1eb | 8966 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 8967 | AT, breg, mips_gp_register); |
252b5132 | 8968 | tempreg = AT; |
252b5132 RH |
8969 | used_at = 1; |
8970 | } | |
8971 | ||
beae10d5 | 8972 | /* Itbl support may require additional care here. */ |
67c0d1eb | 8973 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 8974 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
8975 | offset_expr.X_add_number += 4; |
8976 | ||
8977 | /* Set mips_optimize to 2 to avoid inserting an | |
8978 | undesired nop. */ | |
8979 | hold_mips_optimize = mips_optimize; | |
8980 | mips_optimize = 2; | |
beae10d5 | 8981 | /* Itbl support may require additional care here. */ |
67c0d1eb | 8982 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 8983 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
8984 | mips_optimize = hold_mips_optimize; |
8985 | ||
4d7206a2 | 8986 | relax_switch (); |
252b5132 | 8987 | |
0970e49e | 8988 | offset_expr.X_add_number -= 4; |
252b5132 | 8989 | } |
8fc2e39e | 8990 | used_at = 1; |
67c0d1eb | 8991 | macro_build_lui (&offset_expr, AT); |
252b5132 | 8992 | if (breg != 0) |
67c0d1eb | 8993 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 8994 | /* Itbl support may require additional care here. */ |
67c0d1eb | 8995 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 8996 | BFD_RELOC_LO16, AT); |
252b5132 RH |
8997 | /* FIXME: How do we handle overflow here? */ |
8998 | offset_expr.X_add_number += 4; | |
beae10d5 | 8999 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9000 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 9001 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
9002 | if (mips_relax.sequence) |
9003 | relax_end (); | |
bdaaa2e1 | 9004 | } |
0a44bf69 | 9005 | else if (!mips_big_got) |
252b5132 | 9006 | { |
252b5132 RH |
9007 | /* If this is a reference to an external symbol, we want |
9008 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9009 | nop | |
9010 | <op> $treg,0($at) | |
9011 | <op> $treg+1,4($at) | |
9012 | Otherwise we want | |
9013 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9014 | nop | |
9015 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
9016 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
9017 | If there is a base register we add it to $at before the | |
9018 | lwc1 instructions. If there is a constant we include it | |
9019 | in the lwc1 instructions. */ | |
9020 | used_at = 1; | |
9021 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
9022 | if (expr1.X_add_number < -0x8000 |
9023 | || expr1.X_add_number >= 0x8000 - 4) | |
9024 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 9025 | load_got_offset (AT, &offset_expr); |
269137b2 | 9026 | load_delay_nop (); |
252b5132 | 9027 | if (breg != 0) |
67c0d1eb | 9028 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
9029 | |
9030 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9031 | nop. */ | |
9032 | hold_mips_optimize = mips_optimize; | |
9033 | mips_optimize = 2; | |
4d7206a2 | 9034 | |
beae10d5 | 9035 | /* Itbl support may require additional care here. */ |
4d7206a2 | 9036 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
9037 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
9038 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9039 | expr1.X_add_number += 4; |
67c0d1eb RS |
9040 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
9041 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9042 | relax_switch (); |
67c0d1eb RS |
9043 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
9044 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9045 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
9046 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
9047 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9048 | relax_end (); |
252b5132 | 9049 | |
4d7206a2 | 9050 | mips_optimize = hold_mips_optimize; |
252b5132 | 9051 | } |
0a44bf69 | 9052 | else if (mips_big_got) |
252b5132 | 9053 | { |
67c0d1eb | 9054 | int gpdelay; |
252b5132 RH |
9055 | |
9056 | /* If this is a reference to an external symbol, we want | |
9057 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
9058 | addu $at,$at,$gp | |
9059 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
9060 | nop | |
9061 | <op> $treg,0($at) | |
9062 | <op> $treg+1,4($at) | |
9063 | Otherwise we want | |
9064 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9065 | nop | |
9066 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
9067 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
9068 | If there is a base register we add it to $at before the | |
9069 | lwc1 instructions. If there is a constant we include it | |
9070 | in the lwc1 instructions. */ | |
9071 | used_at = 1; | |
9072 | expr1.X_add_number = offset_expr.X_add_number; | |
9073 | offset_expr.X_add_number = 0; | |
9074 | if (expr1.X_add_number < -0x8000 | |
9075 | || expr1.X_add_number >= 0x8000 - 4) | |
9076 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 9077 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 9078 | relax_start (offset_expr.X_add_symbol); |
df58fc94 | 9079 | macro_build (&offset_expr, "lui", LUI_FMT, |
67c0d1eb RS |
9080 | AT, BFD_RELOC_MIPS_GOT_HI16); |
9081 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 9082 | AT, AT, mips_gp_register); |
67c0d1eb | 9083 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 9084 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 9085 | load_delay_nop (); |
252b5132 | 9086 | if (breg != 0) |
67c0d1eb | 9087 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 9088 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9089 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 9090 | BFD_RELOC_LO16, AT); |
252b5132 RH |
9091 | expr1.X_add_number += 4; |
9092 | ||
9093 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9094 | nop. */ | |
9095 | hold_mips_optimize = mips_optimize; | |
9096 | mips_optimize = 2; | |
beae10d5 | 9097 | /* Itbl support may require additional care here. */ |
67c0d1eb | 9098 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 9099 | BFD_RELOC_LO16, AT); |
252b5132 RH |
9100 | mips_optimize = hold_mips_optimize; |
9101 | expr1.X_add_number -= 4; | |
9102 | ||
4d7206a2 RS |
9103 | relax_switch (); |
9104 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
9105 | if (gpdelay) |
9106 | macro_build (NULL, "nop", ""); | |
9107 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
9108 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 9109 | load_delay_nop (); |
252b5132 | 9110 | if (breg != 0) |
67c0d1eb | 9111 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 9112 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
9113 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
9114 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 9115 | offset_expr.X_add_number += 4; |
252b5132 RH |
9116 | |
9117 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
9118 | nop. */ | |
9119 | hold_mips_optimize = mips_optimize; | |
9120 | mips_optimize = 2; | |
beae10d5 | 9121 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
9122 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
9123 | BFD_RELOC_LO16, AT); | |
252b5132 | 9124 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 9125 | relax_end (); |
252b5132 | 9126 | } |
252b5132 RH |
9127 | else |
9128 | abort (); | |
9129 | ||
252b5132 RH |
9130 | break; |
9131 | ||
9132 | case M_LD_OB: | |
704897fb | 9133 | s = HAVE_64BIT_GPRS ? "ld" : "lw"; |
252b5132 RH |
9134 | goto sd_ob; |
9135 | case M_SD_OB: | |
704897fb | 9136 | s = HAVE_64BIT_GPRS ? "sd" : "sw"; |
252b5132 | 9137 | sd_ob: |
4614d845 MR |
9138 | macro_build (&offset_expr, s, "t,o(b)", treg, |
9139 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2], | |
9140 | breg); | |
704897fb MR |
9141 | if (!HAVE_64BIT_GPRS) |
9142 | { | |
9143 | offset_expr.X_add_number += 4; | |
9144 | macro_build (&offset_expr, s, "t,o(b)", treg + 1, | |
4614d845 MR |
9145 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2], |
9146 | breg); | |
704897fb | 9147 | } |
8fc2e39e | 9148 | break; |
252b5132 | 9149 | |
dd6a37e7 AP |
9150 | |
9151 | case M_SAA_AB: | |
9152 | ab = 1; | |
9153 | case M_SAA_OB: | |
9154 | s = "saa"; | |
9155 | off0 = 1; | |
9156 | fmt = "t,(b)"; | |
9157 | goto ld_st; | |
9158 | case M_SAAD_AB: | |
9159 | ab = 1; | |
9160 | case M_SAAD_OB: | |
9161 | s = "saad"; | |
9162 | off0 = 1; | |
9163 | fmt = "t,(b)"; | |
9164 | goto ld_st; | |
9165 | ||
252b5132 RH |
9166 | /* New code added to support COPZ instructions. |
9167 | This code builds table entries out of the macros in mip_opcodes. | |
9168 | R4000 uses interlocks to handle coproc delays. | |
9169 | Other chips (like the R3000) require nops to be inserted for delays. | |
9170 | ||
f72c8c98 | 9171 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
9172 | In order to fill delay slots for non-interlocked chips, |
9173 | we must have a way to specify delays based on the coprocessor. | |
9174 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
9175 | What are the side-effects of the cop instruction? | |
9176 | What cache support might we have and what are its effects? | |
9177 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 9178 | What registers are read/set/modified? |
252b5132 RH |
9179 | |
9180 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 9181 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
9182 | |
9183 | case M_COP0: | |
9184 | s = "c0"; | |
9185 | goto copz; | |
9186 | case M_COP1: | |
9187 | s = "c1"; | |
9188 | goto copz; | |
9189 | case M_COP2: | |
9190 | s = "c2"; | |
9191 | goto copz; | |
9192 | case M_COP3: | |
9193 | s = "c3"; | |
9194 | copz: | |
df58fc94 | 9195 | gas_assert (!mips_opts.micromips); |
b19e8a9b AN |
9196 | if (NO_ISA_COP (mips_opts.arch) |
9197 | && (ip->insn_mo->pinfo2 & INSN2_M_FP_S) == 0) | |
9198 | { | |
7bd942df | 9199 | as_bad (_("Opcode not supported on this processor: %s"), |
b19e8a9b AN |
9200 | mips_cpu_info_from_arch (mips_opts.arch)->name); |
9201 | break; | |
9202 | } | |
9203 | ||
252b5132 RH |
9204 | /* For now we just do C (same as Cz). The parameter will be |
9205 | stored in insn_opcode by mips_ip. */ | |
67c0d1eb | 9206 | macro_build (NULL, s, "C", ip->insn_opcode); |
8fc2e39e | 9207 | break; |
252b5132 | 9208 | |
ea1fb5dc | 9209 | case M_MOVE: |
67c0d1eb | 9210 | move_register (dreg, sreg); |
8fc2e39e | 9211 | break; |
ea1fb5dc | 9212 | |
252b5132 RH |
9213 | case M_DMUL: |
9214 | dbl = 1; | |
9215 | case M_MUL: | |
67c0d1eb | 9216 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", sreg, treg); |
df58fc94 | 9217 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
8fc2e39e | 9218 | break; |
252b5132 RH |
9219 | |
9220 | case M_DMUL_I: | |
9221 | dbl = 1; | |
9222 | case M_MUL_I: | |
9223 | /* The MIPS assembler some times generates shifts and adds. I'm | |
9224 | not trying to be that fancy. GCC should do this for us | |
9225 | anyway. */ | |
8fc2e39e | 9226 | used_at = 1; |
67c0d1eb RS |
9227 | load_register (AT, &imm_expr, dbl); |
9228 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, AT); | |
df58fc94 | 9229 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
252b5132 RH |
9230 | break; |
9231 | ||
9232 | case M_DMULO_I: | |
9233 | dbl = 1; | |
9234 | case M_MULO_I: | |
9235 | imm = 1; | |
9236 | goto do_mulo; | |
9237 | ||
9238 | case M_DMULO: | |
9239 | dbl = 1; | |
9240 | case M_MULO: | |
9241 | do_mulo: | |
7d10b47d | 9242 | start_noreorder (); |
8fc2e39e | 9243 | used_at = 1; |
252b5132 | 9244 | if (imm) |
67c0d1eb RS |
9245 | load_register (AT, &imm_expr, dbl); |
9246 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); | |
df58fc94 RS |
9247 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
9248 | macro_build (NULL, dbl ? "dsra32" : "sra", SHFT_FMT, dreg, dreg, RA); | |
9249 | macro_build (NULL, "mfhi", MFHL_FMT, AT); | |
252b5132 | 9250 | if (mips_trap) |
df58fc94 | 9251 | macro_build (NULL, "tne", TRAP_FMT, dreg, AT, 6); |
252b5132 RH |
9252 | else |
9253 | { | |
df58fc94 RS |
9254 | if (mips_opts.micromips) |
9255 | micromips_label_expr (&label_expr); | |
9256 | else | |
9257 | label_expr.X_add_number = 8; | |
9258 | macro_build (&label_expr, "beq", "s,t,p", dreg, AT); | |
a605d2b3 | 9259 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
9260 | macro_build (NULL, "break", BRK_FMT, 6); |
9261 | if (mips_opts.micromips) | |
9262 | micromips_add_label (); | |
252b5132 | 9263 | } |
7d10b47d | 9264 | end_noreorder (); |
df58fc94 | 9265 | macro_build (NULL, "mflo", MFHL_FMT, dreg); |
252b5132 RH |
9266 | break; |
9267 | ||
9268 | case M_DMULOU_I: | |
9269 | dbl = 1; | |
9270 | case M_MULOU_I: | |
9271 | imm = 1; | |
9272 | goto do_mulou; | |
9273 | ||
9274 | case M_DMULOU: | |
9275 | dbl = 1; | |
9276 | case M_MULOU: | |
9277 | do_mulou: | |
7d10b47d | 9278 | start_noreorder (); |
8fc2e39e | 9279 | used_at = 1; |
252b5132 | 9280 | if (imm) |
67c0d1eb RS |
9281 | load_register (AT, &imm_expr, dbl); |
9282 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
17a2f251 | 9283 | sreg, imm ? AT : treg); |
df58fc94 RS |
9284 | macro_build (NULL, "mfhi", MFHL_FMT, AT); |
9285 | macro_build (NULL, "mflo", MFHL_FMT, dreg); | |
252b5132 | 9286 | if (mips_trap) |
df58fc94 | 9287 | macro_build (NULL, "tne", TRAP_FMT, AT, ZERO, 6); |
252b5132 RH |
9288 | else |
9289 | { | |
df58fc94 RS |
9290 | if (mips_opts.micromips) |
9291 | micromips_label_expr (&label_expr); | |
9292 | else | |
9293 | label_expr.X_add_number = 8; | |
9294 | macro_build (&label_expr, "beq", "s,t,p", AT, ZERO); | |
a605d2b3 | 9295 | macro_build (NULL, "nop", ""); |
df58fc94 RS |
9296 | macro_build (NULL, "break", BRK_FMT, 6); |
9297 | if (mips_opts.micromips) | |
9298 | micromips_add_label (); | |
252b5132 | 9299 | } |
7d10b47d | 9300 | end_noreorder (); |
252b5132 RH |
9301 | break; |
9302 | ||
771c7ce4 | 9303 | case M_DROL: |
fef14a42 | 9304 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
9305 | { |
9306 | if (dreg == sreg) | |
9307 | { | |
9308 | tempreg = AT; | |
9309 | used_at = 1; | |
9310 | } | |
9311 | else | |
9312 | { | |
9313 | tempreg = dreg; | |
82dd0097 | 9314 | } |
67c0d1eb RS |
9315 | macro_build (NULL, "dnegu", "d,w", tempreg, treg); |
9316 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 9317 | break; |
82dd0097 | 9318 | } |
8fc2e39e | 9319 | used_at = 1; |
c80c840e | 9320 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9321 | macro_build (NULL, "dsrlv", "d,t,s", AT, sreg, AT); |
9322 | macro_build (NULL, "dsllv", "d,t,s", dreg, sreg, treg); | |
9323 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
9324 | break; |
9325 | ||
252b5132 | 9326 | case M_ROL: |
fef14a42 | 9327 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 CD |
9328 | { |
9329 | if (dreg == sreg) | |
9330 | { | |
9331 | tempreg = AT; | |
9332 | used_at = 1; | |
9333 | } | |
9334 | else | |
9335 | { | |
9336 | tempreg = dreg; | |
82dd0097 | 9337 | } |
67c0d1eb RS |
9338 | macro_build (NULL, "negu", "d,w", tempreg, treg); |
9339 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 9340 | break; |
82dd0097 | 9341 | } |
8fc2e39e | 9342 | used_at = 1; |
c80c840e | 9343 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9344 | macro_build (NULL, "srlv", "d,t,s", AT, sreg, AT); |
9345 | macro_build (NULL, "sllv", "d,t,s", dreg, sreg, treg); | |
9346 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9347 | break; |
9348 | ||
771c7ce4 TS |
9349 | case M_DROL_I: |
9350 | { | |
9351 | unsigned int rot; | |
91d6fa6a NC |
9352 | char *l; |
9353 | char *rr; | |
771c7ce4 TS |
9354 | |
9355 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9356 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9357 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 9358 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
9359 | { |
9360 | rot = (64 - rot) & 0x3f; | |
9361 | if (rot >= 32) | |
df58fc94 | 9362 | macro_build (NULL, "dror32", SHFT_FMT, dreg, sreg, rot - 32); |
60b63b72 | 9363 | else |
df58fc94 | 9364 | macro_build (NULL, "dror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9365 | break; |
60b63b72 | 9366 | } |
483fc7cd | 9367 | if (rot == 0) |
483fc7cd | 9368 | { |
df58fc94 | 9369 | macro_build (NULL, "dsrl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9370 | break; |
483fc7cd | 9371 | } |
82dd0097 | 9372 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
91d6fa6a | 9373 | rr = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 | 9374 | rot &= 0x1f; |
8fc2e39e | 9375 | used_at = 1; |
df58fc94 RS |
9376 | macro_build (NULL, l, SHFT_FMT, AT, sreg, rot); |
9377 | macro_build (NULL, rr, SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9378 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9379 | } |
9380 | break; | |
9381 | ||
252b5132 | 9382 | case M_ROL_I: |
771c7ce4 TS |
9383 | { |
9384 | unsigned int rot; | |
9385 | ||
9386 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9387 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9388 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 9389 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 9390 | { |
df58fc94 | 9391 | macro_build (NULL, "ror", SHFT_FMT, dreg, sreg, (32 - rot) & 0x1f); |
8fc2e39e | 9392 | break; |
60b63b72 | 9393 | } |
483fc7cd | 9394 | if (rot == 0) |
483fc7cd | 9395 | { |
df58fc94 | 9396 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9397 | break; |
483fc7cd | 9398 | } |
8fc2e39e | 9399 | used_at = 1; |
df58fc94 RS |
9400 | macro_build (NULL, "sll", SHFT_FMT, AT, sreg, rot); |
9401 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9402 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9403 | } |
9404 | break; | |
9405 | ||
9406 | case M_DROR: | |
fef14a42 | 9407 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 9408 | { |
67c0d1eb | 9409 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 9410 | break; |
82dd0097 | 9411 | } |
8fc2e39e | 9412 | used_at = 1; |
c80c840e | 9413 | macro_build (NULL, "dsubu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9414 | macro_build (NULL, "dsllv", "d,t,s", AT, sreg, AT); |
9415 | macro_build (NULL, "dsrlv", "d,t,s", dreg, sreg, treg); | |
9416 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9417 | break; |
9418 | ||
9419 | case M_ROR: | |
fef14a42 | 9420 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 9421 | { |
67c0d1eb | 9422 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 9423 | break; |
82dd0097 | 9424 | } |
8fc2e39e | 9425 | used_at = 1; |
c80c840e | 9426 | macro_build (NULL, "subu", "d,v,t", AT, ZERO, treg); |
67c0d1eb RS |
9427 | macro_build (NULL, "sllv", "d,t,s", AT, sreg, AT); |
9428 | macro_build (NULL, "srlv", "d,t,s", dreg, sreg, treg); | |
9429 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
9430 | break; |
9431 | ||
771c7ce4 TS |
9432 | case M_DROR_I: |
9433 | { | |
9434 | unsigned int rot; | |
91d6fa6a NC |
9435 | char *l; |
9436 | char *rr; | |
771c7ce4 TS |
9437 | |
9438 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9439 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9440 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 9441 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
9442 | { |
9443 | if (rot >= 32) | |
df58fc94 | 9444 | macro_build (NULL, "dror32", SHFT_FMT, dreg, sreg, rot - 32); |
82dd0097 | 9445 | else |
df58fc94 | 9446 | macro_build (NULL, "dror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9447 | break; |
82dd0097 | 9448 | } |
483fc7cd | 9449 | if (rot == 0) |
483fc7cd | 9450 | { |
df58fc94 | 9451 | macro_build (NULL, "dsrl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9452 | break; |
483fc7cd | 9453 | } |
91d6fa6a | 9454 | rr = (rot < 0x20) ? "dsrl" : "dsrl32"; |
82dd0097 CD |
9455 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; |
9456 | rot &= 0x1f; | |
8fc2e39e | 9457 | used_at = 1; |
df58fc94 RS |
9458 | macro_build (NULL, rr, SHFT_FMT, AT, sreg, rot); |
9459 | macro_build (NULL, l, SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9460 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 TS |
9461 | } |
9462 | break; | |
9463 | ||
252b5132 | 9464 | case M_ROR_I: |
771c7ce4 TS |
9465 | { |
9466 | unsigned int rot; | |
9467 | ||
9468 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 9469 | as_bad (_("Improper rotate count")); |
771c7ce4 | 9470 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 9471 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 9472 | { |
df58fc94 | 9473 | macro_build (NULL, "ror", SHFT_FMT, dreg, sreg, rot); |
8fc2e39e | 9474 | break; |
82dd0097 | 9475 | } |
483fc7cd | 9476 | if (rot == 0) |
483fc7cd | 9477 | { |
df58fc94 | 9478 | macro_build (NULL, "srl", SHFT_FMT, dreg, sreg, 0); |
8fc2e39e | 9479 | break; |
483fc7cd | 9480 | } |
8fc2e39e | 9481 | used_at = 1; |
df58fc94 RS |
9482 | macro_build (NULL, "srl", SHFT_FMT, AT, sreg, rot); |
9483 | macro_build (NULL, "sll", SHFT_FMT, dreg, sreg, (0x20 - rot) & 0x1f); | |
67c0d1eb | 9484 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); |
771c7ce4 | 9485 | } |
252b5132 RH |
9486 | break; |
9487 | ||
252b5132 RH |
9488 | case M_SEQ: |
9489 | if (sreg == 0) | |
67c0d1eb | 9490 | macro_build (&expr1, "sltiu", "t,r,j", dreg, treg, BFD_RELOC_LO16); |
252b5132 | 9491 | else if (treg == 0) |
67c0d1eb | 9492 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9493 | else |
9494 | { | |
67c0d1eb RS |
9495 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
9496 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 | 9497 | } |
8fc2e39e | 9498 | break; |
252b5132 RH |
9499 | |
9500 | case M_SEQ_I: | |
9501 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
9502 | { | |
67c0d1eb | 9503 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9504 | break; |
252b5132 RH |
9505 | } |
9506 | if (sreg == 0) | |
9507 | { | |
9508 | as_warn (_("Instruction %s: result is always false"), | |
9509 | ip->insn_mo->name); | |
67c0d1eb | 9510 | move_register (dreg, 0); |
8fc2e39e | 9511 | break; |
252b5132 | 9512 | } |
dd3cbb7e NC |
9513 | if (CPU_HAS_SEQ (mips_opts.arch) |
9514 | && -512 <= imm_expr.X_add_number | |
9515 | && imm_expr.X_add_number < 512) | |
9516 | { | |
9517 | macro_build (NULL, "seqi", "t,r,+Q", dreg, sreg, | |
750bdd57 | 9518 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
9519 | break; |
9520 | } | |
252b5132 RH |
9521 | if (imm_expr.X_op == O_constant |
9522 | && imm_expr.X_add_number >= 0 | |
9523 | && imm_expr.X_add_number < 0x10000) | |
9524 | { | |
67c0d1eb | 9525 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9526 | } |
9527 | else if (imm_expr.X_op == O_constant | |
9528 | && imm_expr.X_add_number > -0x8000 | |
9529 | && imm_expr.X_add_number < 0) | |
9530 | { | |
9531 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9532 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 9533 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 9534 | } |
dd3cbb7e NC |
9535 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
9536 | { | |
9537 | used_at = 1; | |
9538 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
9539 | macro_build (NULL, "seq", "d,v,t", dreg, sreg, AT); | |
9540 | break; | |
9541 | } | |
252b5132 RH |
9542 | else |
9543 | { | |
67c0d1eb RS |
9544 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9545 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9546 | used_at = 1; |
9547 | } | |
67c0d1eb | 9548 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 9549 | break; |
252b5132 RH |
9550 | |
9551 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
9552 | s = "slt"; | |
9553 | goto sge; | |
9554 | case M_SGEU: | |
9555 | s = "sltu"; | |
9556 | sge: | |
67c0d1eb RS |
9557 | macro_build (NULL, s, "d,v,t", dreg, sreg, treg); |
9558 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 9559 | break; |
252b5132 RH |
9560 | |
9561 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
9562 | case M_SGEU_I: | |
9563 | if (imm_expr.X_op == O_constant | |
9564 | && imm_expr.X_add_number >= -0x8000 | |
9565 | && imm_expr.X_add_number < 0x8000) | |
9566 | { | |
67c0d1eb RS |
9567 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
9568 | dreg, sreg, BFD_RELOC_LO16); | |
252b5132 RH |
9569 | } |
9570 | else | |
9571 | { | |
67c0d1eb RS |
9572 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9573 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", | |
9574 | dreg, sreg, AT); | |
252b5132 RH |
9575 | used_at = 1; |
9576 | } | |
67c0d1eb | 9577 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 9578 | break; |
252b5132 RH |
9579 | |
9580 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
9581 | s = "slt"; | |
9582 | goto sgt; | |
9583 | case M_SGTU: | |
9584 | s = "sltu"; | |
9585 | sgt: | |
67c0d1eb | 9586 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
8fc2e39e | 9587 | break; |
252b5132 RH |
9588 | |
9589 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
9590 | s = "slt"; | |
9591 | goto sgti; | |
9592 | case M_SGTU_I: | |
9593 | s = "sltu"; | |
9594 | sgti: | |
8fc2e39e | 9595 | used_at = 1; |
67c0d1eb RS |
9596 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9597 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
252b5132 RH |
9598 | break; |
9599 | ||
2396cfb9 | 9600 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
9601 | s = "slt"; |
9602 | goto sle; | |
9603 | case M_SLEU: | |
9604 | s = "sltu"; | |
9605 | sle: | |
67c0d1eb RS |
9606 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
9607 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 9608 | break; |
252b5132 | 9609 | |
2396cfb9 | 9610 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
9611 | s = "slt"; |
9612 | goto slei; | |
9613 | case M_SLEU_I: | |
9614 | s = "sltu"; | |
9615 | slei: | |
8fc2e39e | 9616 | used_at = 1; |
67c0d1eb RS |
9617 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9618 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
9619 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 RH |
9620 | break; |
9621 | ||
9622 | case M_SLT_I: | |
9623 | if (imm_expr.X_op == O_constant | |
9624 | && imm_expr.X_add_number >= -0x8000 | |
9625 | && imm_expr.X_add_number < 0x8000) | |
9626 | { | |
67c0d1eb | 9627 | macro_build (&imm_expr, "slti", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9628 | break; |
252b5132 | 9629 | } |
8fc2e39e | 9630 | used_at = 1; |
67c0d1eb RS |
9631 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9632 | macro_build (NULL, "slt", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9633 | break; |
9634 | ||
9635 | case M_SLTU_I: | |
9636 | if (imm_expr.X_op == O_constant | |
9637 | && imm_expr.X_add_number >= -0x8000 | |
9638 | && imm_expr.X_add_number < 0x8000) | |
9639 | { | |
67c0d1eb | 9640 | macro_build (&imm_expr, "sltiu", "t,r,j", dreg, sreg, |
17a2f251 | 9641 | BFD_RELOC_LO16); |
8fc2e39e | 9642 | break; |
252b5132 | 9643 | } |
8fc2e39e | 9644 | used_at = 1; |
67c0d1eb RS |
9645 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9646 | macro_build (NULL, "sltu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9647 | break; |
9648 | ||
9649 | case M_SNE: | |
9650 | if (sreg == 0) | |
67c0d1eb | 9651 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, treg); |
252b5132 | 9652 | else if (treg == 0) |
67c0d1eb | 9653 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
9654 | else |
9655 | { | |
67c0d1eb RS |
9656 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
9657 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); | |
252b5132 | 9658 | } |
8fc2e39e | 9659 | break; |
252b5132 RH |
9660 | |
9661 | case M_SNE_I: | |
9662 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
9663 | { | |
67c0d1eb | 9664 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
8fc2e39e | 9665 | break; |
252b5132 RH |
9666 | } |
9667 | if (sreg == 0) | |
9668 | { | |
9669 | as_warn (_("Instruction %s: result is always true"), | |
9670 | ip->insn_mo->name); | |
67c0d1eb RS |
9671 | macro_build (&expr1, HAVE_32BIT_GPRS ? "addiu" : "daddiu", "t,r,j", |
9672 | dreg, 0, BFD_RELOC_LO16); | |
8fc2e39e | 9673 | break; |
252b5132 | 9674 | } |
dd3cbb7e NC |
9675 | if (CPU_HAS_SEQ (mips_opts.arch) |
9676 | && -512 <= imm_expr.X_add_number | |
9677 | && imm_expr.X_add_number < 512) | |
9678 | { | |
9679 | macro_build (NULL, "snei", "t,r,+Q", dreg, sreg, | |
750bdd57 | 9680 | (int) imm_expr.X_add_number); |
dd3cbb7e NC |
9681 | break; |
9682 | } | |
252b5132 RH |
9683 | if (imm_expr.X_op == O_constant |
9684 | && imm_expr.X_add_number >= 0 | |
9685 | && imm_expr.X_add_number < 0x10000) | |
9686 | { | |
67c0d1eb | 9687 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
9688 | } |
9689 | else if (imm_expr.X_op == O_constant | |
9690 | && imm_expr.X_add_number > -0x8000 | |
9691 | && imm_expr.X_add_number < 0) | |
9692 | { | |
9693 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 9694 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 9695 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 | 9696 | } |
dd3cbb7e NC |
9697 | else if (CPU_HAS_SEQ (mips_opts.arch)) |
9698 | { | |
9699 | used_at = 1; | |
9700 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); | |
9701 | macro_build (NULL, "sne", "d,v,t", dreg, sreg, AT); | |
9702 | break; | |
9703 | } | |
252b5132 RH |
9704 | else |
9705 | { | |
67c0d1eb RS |
9706 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9707 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
9708 | used_at = 1; |
9709 | } | |
67c0d1eb | 9710 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); |
8fc2e39e | 9711 | break; |
252b5132 | 9712 | |
df58fc94 RS |
9713 | case M_SUB_I: |
9714 | s = "addi"; | |
9715 | s2 = "sub"; | |
9716 | goto do_subi; | |
9717 | case M_SUBU_I: | |
9718 | s = "addiu"; | |
9719 | s2 = "subu"; | |
9720 | goto do_subi; | |
252b5132 RH |
9721 | case M_DSUB_I: |
9722 | dbl = 1; | |
df58fc94 RS |
9723 | s = "daddi"; |
9724 | s2 = "dsub"; | |
9725 | if (!mips_opts.micromips) | |
9726 | goto do_subi; | |
252b5132 | 9727 | if (imm_expr.X_op == O_constant |
df58fc94 RS |
9728 | && imm_expr.X_add_number > -0x200 |
9729 | && imm_expr.X_add_number <= 0x200) | |
252b5132 | 9730 | { |
df58fc94 | 9731 | macro_build (NULL, s, "t,r,.", dreg, sreg, -imm_expr.X_add_number); |
8fc2e39e | 9732 | break; |
252b5132 | 9733 | } |
df58fc94 | 9734 | goto do_subi_i; |
252b5132 RH |
9735 | case M_DSUBU_I: |
9736 | dbl = 1; | |
df58fc94 RS |
9737 | s = "daddiu"; |
9738 | s2 = "dsubu"; | |
9739 | do_subi: | |
252b5132 RH |
9740 | if (imm_expr.X_op == O_constant |
9741 | && imm_expr.X_add_number > -0x8000 | |
9742 | && imm_expr.X_add_number <= 0x8000) | |
9743 | { | |
9744 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
df58fc94 | 9745 | macro_build (&imm_expr, s, "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 9746 | break; |
252b5132 | 9747 | } |
df58fc94 | 9748 | do_subi_i: |
8fc2e39e | 9749 | used_at = 1; |
67c0d1eb | 9750 | load_register (AT, &imm_expr, dbl); |
df58fc94 | 9751 | macro_build (NULL, s2, "d,v,t", dreg, sreg, AT); |
252b5132 RH |
9752 | break; |
9753 | ||
9754 | case M_TEQ_I: | |
9755 | s = "teq"; | |
9756 | goto trap; | |
9757 | case M_TGE_I: | |
9758 | s = "tge"; | |
9759 | goto trap; | |
9760 | case M_TGEU_I: | |
9761 | s = "tgeu"; | |
9762 | goto trap; | |
9763 | case M_TLT_I: | |
9764 | s = "tlt"; | |
9765 | goto trap; | |
9766 | case M_TLTU_I: | |
9767 | s = "tltu"; | |
9768 | goto trap; | |
9769 | case M_TNE_I: | |
9770 | s = "tne"; | |
9771 | trap: | |
8fc2e39e | 9772 | used_at = 1; |
67c0d1eb RS |
9773 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
9774 | macro_build (NULL, s, "s,t", sreg, AT); | |
252b5132 RH |
9775 | break; |
9776 | ||
252b5132 | 9777 | case M_TRUNCWS: |
43841e91 | 9778 | case M_TRUNCWD: |
df58fc94 | 9779 | gas_assert (!mips_opts.micromips); |
9c2799c2 | 9780 | gas_assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 9781 | used_at = 1; |
252b5132 RH |
9782 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
9783 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
9784 | ||
9785 | /* | |
9786 | * Is the double cfc1 instruction a bug in the mips assembler; | |
9787 | * or is there a reason for it? | |
9788 | */ | |
7d10b47d | 9789 | start_noreorder (); |
67c0d1eb RS |
9790 | macro_build (NULL, "cfc1", "t,G", treg, RA); |
9791 | macro_build (NULL, "cfc1", "t,G", treg, RA); | |
9792 | macro_build (NULL, "nop", ""); | |
252b5132 | 9793 | expr1.X_add_number = 3; |
67c0d1eb | 9794 | macro_build (&expr1, "ori", "t,r,i", AT, treg, BFD_RELOC_LO16); |
252b5132 | 9795 | expr1.X_add_number = 2; |
67c0d1eb RS |
9796 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
9797 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
9798 | macro_build (NULL, "nop", ""); | |
9799 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
9800 | dreg, sreg); | |
9801 | macro_build (NULL, "ctc1", "t,G", treg, RA); | |
9802 | macro_build (NULL, "nop", ""); | |
7d10b47d | 9803 | end_noreorder (); |
252b5132 RH |
9804 | break; |
9805 | ||
df58fc94 RS |
9806 | case M_ULH_A: |
9807 | ab = 1; | |
252b5132 RH |
9808 | case M_ULH: |
9809 | s = "lb"; | |
df58fc94 RS |
9810 | s2 = "lbu"; |
9811 | off = 1; | |
9812 | goto uld_st; | |
9813 | case M_ULHU_A: | |
9814 | ab = 1; | |
252b5132 RH |
9815 | case M_ULHU: |
9816 | s = "lbu"; | |
df58fc94 RS |
9817 | s2 = "lbu"; |
9818 | off = 1; | |
9819 | goto uld_st; | |
9820 | case M_ULW_A: | |
9821 | ab = 1; | |
9822 | case M_ULW: | |
9823 | s = "lwl"; | |
9824 | s2 = "lwr"; | |
9825 | off12 = mips_opts.micromips; | |
9826 | off = 3; | |
9827 | goto uld_st; | |
9828 | case M_ULD_A: | |
9829 | ab = 1; | |
252b5132 RH |
9830 | case M_ULD: |
9831 | s = "ldl"; | |
9832 | s2 = "ldr"; | |
df58fc94 | 9833 | off12 = mips_opts.micromips; |
252b5132 | 9834 | off = 7; |
df58fc94 RS |
9835 | goto uld_st; |
9836 | case M_USH_A: | |
9837 | ab = 1; | |
9838 | case M_USH: | |
9839 | s = "sb"; | |
9840 | s2 = "sb"; | |
9841 | off = 1; | |
9842 | ust = 1; | |
9843 | goto uld_st; | |
9844 | case M_USW_A: | |
9845 | ab = 1; | |
9846 | case M_USW: | |
9847 | s = "swl"; | |
9848 | s2 = "swr"; | |
9849 | off12 = mips_opts.micromips; | |
252b5132 | 9850 | off = 3; |
df58fc94 RS |
9851 | ust = 1; |
9852 | goto uld_st; | |
9853 | case M_USD_A: | |
9854 | ab = 1; | |
9855 | case M_USD: | |
9856 | s = "sdl"; | |
9857 | s2 = "sdr"; | |
9858 | off12 = mips_opts.micromips; | |
9859 | off = 7; | |
9860 | ust = 1; | |
9861 | ||
9862 | uld_st: | |
9863 | if (!ab && offset_expr.X_add_number >= 0x8000 - off) | |
f71d0d44 | 9864 | as_bad (_("Operand overflow")); |
df58fc94 RS |
9865 | |
9866 | ep = &offset_expr; | |
9867 | expr1.X_add_number = 0; | |
9868 | if (ab) | |
9869 | { | |
9870 | used_at = 1; | |
9871 | tempreg = AT; | |
9872 | load_address (tempreg, ep, &used_at); | |
9873 | if (breg != 0) | |
9874 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
9875 | tempreg, tempreg, breg); | |
9876 | breg = tempreg; | |
9877 | tempreg = treg; | |
9878 | ep = &expr1; | |
9879 | } | |
9880 | else if (off12 | |
9881 | && (offset_expr.X_op != O_constant | |
9882 | || !IS_SEXT_12BIT_NUM (offset_expr.X_add_number) | |
9883 | || !IS_SEXT_12BIT_NUM (offset_expr.X_add_number + off))) | |
9884 | { | |
9885 | used_at = 1; | |
9886 | tempreg = AT; | |
9887 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", tempreg, breg, | |
9888 | -1, offset_reloc[0], offset_reloc[1], offset_reloc[2]); | |
9889 | breg = tempreg; | |
9890 | tempreg = treg; | |
9891 | ep = &expr1; | |
9892 | } | |
9893 | else if (!ust && treg == breg) | |
8fc2e39e TS |
9894 | { |
9895 | used_at = 1; | |
9896 | tempreg = AT; | |
9897 | } | |
252b5132 | 9898 | else |
df58fc94 | 9899 | tempreg = treg; |
af22f5b2 | 9900 | |
df58fc94 RS |
9901 | if (off == 1) |
9902 | goto ulh_sh; | |
252b5132 | 9903 | |
90ecf173 | 9904 | if (!target_big_endian) |
df58fc94 RS |
9905 | ep->X_add_number += off; |
9906 | if (!off12) | |
9907 | macro_build (ep, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
252b5132 | 9908 | else |
df58fc94 RS |
9909 | macro_build (NULL, s, "t,~(b)", |
9910 | tempreg, (unsigned long) ep->X_add_number, breg); | |
9911 | ||
90ecf173 | 9912 | if (!target_big_endian) |
df58fc94 | 9913 | ep->X_add_number -= off; |
252b5132 | 9914 | else |
df58fc94 RS |
9915 | ep->X_add_number += off; |
9916 | if (!off12) | |
9917 | macro_build (ep, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
9918 | else | |
9919 | macro_build (NULL, s2, "t,~(b)", | |
9920 | tempreg, (unsigned long) ep->X_add_number, breg); | |
252b5132 | 9921 | |
df58fc94 RS |
9922 | /* If necessary, move the result in tempreg to the final destination. */ |
9923 | if (!ust && treg != tempreg) | |
9924 | { | |
9925 | /* Protect second load's delay slot. */ | |
9926 | load_delay_nop (); | |
9927 | move_register (treg, tempreg); | |
9928 | } | |
8fc2e39e | 9929 | break; |
252b5132 | 9930 | |
df58fc94 | 9931 | ulh_sh: |
d6bc6245 | 9932 | used_at = 1; |
df58fc94 RS |
9933 | if (target_big_endian == ust) |
9934 | ep->X_add_number += off; | |
9935 | tempreg = ust || ab ? treg : AT; | |
9936 | macro_build (ep, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
9937 | ||
9938 | /* For halfword transfers we need a temporary register to shuffle | |
9939 | bytes. Unfortunately for M_USH_A we have none available before | |
9940 | the next store as AT holds the base address. We deal with this | |
9941 | case by clobbering TREG and then restoring it as with ULH. */ | |
9942 | tempreg = ust == ab ? treg : AT; | |
9943 | if (ust) | |
9944 | macro_build (NULL, "srl", SHFT_FMT, tempreg, treg, 8); | |
9945 | ||
9946 | if (target_big_endian == ust) | |
9947 | ep->X_add_number -= off; | |
252b5132 | 9948 | else |
df58fc94 RS |
9949 | ep->X_add_number += off; |
9950 | macro_build (ep, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); | |
252b5132 | 9951 | |
df58fc94 RS |
9952 | /* For M_USH_A re-retrieve the LSB. */ |
9953 | if (ust && ab) | |
9954 | { | |
9955 | if (target_big_endian) | |
9956 | ep->X_add_number += off; | |
9957 | else | |
9958 | ep->X_add_number -= off; | |
9959 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); | |
9960 | } | |
9961 | /* For ULH and M_USH_A OR the LSB in. */ | |
9962 | if (!ust || ab) | |
9963 | { | |
9964 | tempreg = !ab ? AT : treg; | |
9965 | macro_build (NULL, "sll", SHFT_FMT, tempreg, tempreg, 8); | |
9966 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
9967 | } | |
252b5132 RH |
9968 | break; |
9969 | ||
9970 | default: | |
9971 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 9972 | are added dynamically. */ |
252b5132 RH |
9973 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
9974 | break; | |
9975 | } | |
741fe287 | 9976 | if (!mips_opts.at && used_at) |
8fc2e39e | 9977 | as_bad (_("Macro used $at after \".set noat\"")); |
252b5132 RH |
9978 | } |
9979 | ||
9980 | /* Implement macros in mips16 mode. */ | |
9981 | ||
9982 | static void | |
17a2f251 | 9983 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 RH |
9984 | { |
9985 | int mask; | |
9986 | int xreg, yreg, zreg, tmp; | |
252b5132 RH |
9987 | expressionS expr1; |
9988 | int dbl; | |
9989 | const char *s, *s2, *s3; | |
9990 | ||
9991 | mask = ip->insn_mo->mask; | |
9992 | ||
bf12938e RS |
9993 | xreg = MIPS16_EXTRACT_OPERAND (RX, *ip); |
9994 | yreg = MIPS16_EXTRACT_OPERAND (RY, *ip); | |
9995 | zreg = MIPS16_EXTRACT_OPERAND (RZ, *ip); | |
252b5132 | 9996 | |
252b5132 RH |
9997 | expr1.X_op = O_constant; |
9998 | expr1.X_op_symbol = NULL; | |
9999 | expr1.X_add_symbol = NULL; | |
10000 | expr1.X_add_number = 1; | |
10001 | ||
10002 | dbl = 0; | |
10003 | ||
10004 | switch (mask) | |
10005 | { | |
10006 | default: | |
10007 | internalError (); | |
10008 | ||
10009 | case M_DDIV_3: | |
10010 | dbl = 1; | |
10011 | case M_DIV_3: | |
10012 | s = "mflo"; | |
10013 | goto do_div3; | |
10014 | case M_DREM_3: | |
10015 | dbl = 1; | |
10016 | case M_REM_3: | |
10017 | s = "mfhi"; | |
10018 | do_div3: | |
7d10b47d | 10019 | start_noreorder (); |
67c0d1eb | 10020 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", xreg, yreg); |
252b5132 | 10021 | expr1.X_add_number = 2; |
67c0d1eb RS |
10022 | macro_build (&expr1, "bnez", "x,p", yreg); |
10023 | macro_build (NULL, "break", "6", 7); | |
bdaaa2e1 | 10024 | |
252b5132 RH |
10025 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
10026 | since that causes an overflow. We should do that as well, | |
10027 | but I don't see how to do the comparisons without a temporary | |
10028 | register. */ | |
7d10b47d | 10029 | end_noreorder (); |
67c0d1eb | 10030 | macro_build (NULL, s, "x", zreg); |
252b5132 RH |
10031 | break; |
10032 | ||
10033 | case M_DIVU_3: | |
10034 | s = "divu"; | |
10035 | s2 = "mflo"; | |
10036 | goto do_divu3; | |
10037 | case M_REMU_3: | |
10038 | s = "divu"; | |
10039 | s2 = "mfhi"; | |
10040 | goto do_divu3; | |
10041 | case M_DDIVU_3: | |
10042 | s = "ddivu"; | |
10043 | s2 = "mflo"; | |
10044 | goto do_divu3; | |
10045 | case M_DREMU_3: | |
10046 | s = "ddivu"; | |
10047 | s2 = "mfhi"; | |
10048 | do_divu3: | |
7d10b47d | 10049 | start_noreorder (); |
67c0d1eb | 10050 | macro_build (NULL, s, "0,x,y", xreg, yreg); |
252b5132 | 10051 | expr1.X_add_number = 2; |
67c0d1eb RS |
10052 | macro_build (&expr1, "bnez", "x,p", yreg); |
10053 | macro_build (NULL, "break", "6", 7); | |
7d10b47d | 10054 | end_noreorder (); |
67c0d1eb | 10055 | macro_build (NULL, s2, "x", zreg); |
252b5132 RH |
10056 | break; |
10057 | ||
10058 | case M_DMUL: | |
10059 | dbl = 1; | |
10060 | case M_MUL: | |
67c0d1eb RS |
10061 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
10062 | macro_build (NULL, "mflo", "x", zreg); | |
8fc2e39e | 10063 | break; |
252b5132 RH |
10064 | |
10065 | case M_DSUBU_I: | |
10066 | dbl = 1; | |
10067 | goto do_subu; | |
10068 | case M_SUBU_I: | |
10069 | do_subu: | |
10070 | if (imm_expr.X_op != O_constant) | |
10071 | as_bad (_("Unsupported large constant")); | |
10072 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 10073 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
10074 | break; |
10075 | ||
10076 | case M_SUBU_I_2: | |
10077 | if (imm_expr.X_op != O_constant) | |
10078 | as_bad (_("Unsupported large constant")); | |
10079 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 10080 | macro_build (&imm_expr, "addiu", "x,k", xreg); |
252b5132 RH |
10081 | break; |
10082 | ||
10083 | case M_DSUBU_I_2: | |
10084 | if (imm_expr.X_op != O_constant) | |
10085 | as_bad (_("Unsupported large constant")); | |
10086 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 10087 | macro_build (&imm_expr, "daddiu", "y,j", yreg); |
252b5132 RH |
10088 | break; |
10089 | ||
10090 | case M_BEQ: | |
10091 | s = "cmp"; | |
10092 | s2 = "bteqz"; | |
10093 | goto do_branch; | |
10094 | case M_BNE: | |
10095 | s = "cmp"; | |
10096 | s2 = "btnez"; | |
10097 | goto do_branch; | |
10098 | case M_BLT: | |
10099 | s = "slt"; | |
10100 | s2 = "btnez"; | |
10101 | goto do_branch; | |
10102 | case M_BLTU: | |
10103 | s = "sltu"; | |
10104 | s2 = "btnez"; | |
10105 | goto do_branch; | |
10106 | case M_BLE: | |
10107 | s = "slt"; | |
10108 | s2 = "bteqz"; | |
10109 | goto do_reverse_branch; | |
10110 | case M_BLEU: | |
10111 | s = "sltu"; | |
10112 | s2 = "bteqz"; | |
10113 | goto do_reverse_branch; | |
10114 | case M_BGE: | |
10115 | s = "slt"; | |
10116 | s2 = "bteqz"; | |
10117 | goto do_branch; | |
10118 | case M_BGEU: | |
10119 | s = "sltu"; | |
10120 | s2 = "bteqz"; | |
10121 | goto do_branch; | |
10122 | case M_BGT: | |
10123 | s = "slt"; | |
10124 | s2 = "btnez"; | |
10125 | goto do_reverse_branch; | |
10126 | case M_BGTU: | |
10127 | s = "sltu"; | |
10128 | s2 = "btnez"; | |
10129 | ||
10130 | do_reverse_branch: | |
10131 | tmp = xreg; | |
10132 | xreg = yreg; | |
10133 | yreg = tmp; | |
10134 | ||
10135 | do_branch: | |
67c0d1eb RS |
10136 | macro_build (NULL, s, "x,y", xreg, yreg); |
10137 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
10138 | break; |
10139 | ||
10140 | case M_BEQ_I: | |
10141 | s = "cmpi"; | |
10142 | s2 = "bteqz"; | |
10143 | s3 = "x,U"; | |
10144 | goto do_branch_i; | |
10145 | case M_BNE_I: | |
10146 | s = "cmpi"; | |
10147 | s2 = "btnez"; | |
10148 | s3 = "x,U"; | |
10149 | goto do_branch_i; | |
10150 | case M_BLT_I: | |
10151 | s = "slti"; | |
10152 | s2 = "btnez"; | |
10153 | s3 = "x,8"; | |
10154 | goto do_branch_i; | |
10155 | case M_BLTU_I: | |
10156 | s = "sltiu"; | |
10157 | s2 = "btnez"; | |
10158 | s3 = "x,8"; | |
10159 | goto do_branch_i; | |
10160 | case M_BLE_I: | |
10161 | s = "slti"; | |
10162 | s2 = "btnez"; | |
10163 | s3 = "x,8"; | |
10164 | goto do_addone_branch_i; | |
10165 | case M_BLEU_I: | |
10166 | s = "sltiu"; | |
10167 | s2 = "btnez"; | |
10168 | s3 = "x,8"; | |
10169 | goto do_addone_branch_i; | |
10170 | case M_BGE_I: | |
10171 | s = "slti"; | |
10172 | s2 = "bteqz"; | |
10173 | s3 = "x,8"; | |
10174 | goto do_branch_i; | |
10175 | case M_BGEU_I: | |
10176 | s = "sltiu"; | |
10177 | s2 = "bteqz"; | |
10178 | s3 = "x,8"; | |
10179 | goto do_branch_i; | |
10180 | case M_BGT_I: | |
10181 | s = "slti"; | |
10182 | s2 = "bteqz"; | |
10183 | s3 = "x,8"; | |
10184 | goto do_addone_branch_i; | |
10185 | case M_BGTU_I: | |
10186 | s = "sltiu"; | |
10187 | s2 = "bteqz"; | |
10188 | s3 = "x,8"; | |
10189 | ||
10190 | do_addone_branch_i: | |
10191 | if (imm_expr.X_op != O_constant) | |
10192 | as_bad (_("Unsupported large constant")); | |
10193 | ++imm_expr.X_add_number; | |
10194 | ||
10195 | do_branch_i: | |
67c0d1eb RS |
10196 | macro_build (&imm_expr, s, s3, xreg); |
10197 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
10198 | break; |
10199 | ||
10200 | case M_ABS: | |
10201 | expr1.X_add_number = 0; | |
67c0d1eb | 10202 | macro_build (&expr1, "slti", "x,8", yreg); |
252b5132 | 10203 | if (xreg != yreg) |
67c0d1eb | 10204 | move_register (xreg, yreg); |
252b5132 | 10205 | expr1.X_add_number = 2; |
67c0d1eb RS |
10206 | macro_build (&expr1, "bteqz", "p"); |
10207 | macro_build (NULL, "neg", "x,w", xreg, xreg); | |
252b5132 RH |
10208 | } |
10209 | } | |
10210 | ||
10211 | /* For consistency checking, verify that all bits are specified either | |
10212 | by the match/mask part of the instruction definition, or by the | |
10213 | operand list. */ | |
10214 | static int | |
17a2f251 | 10215 | validate_mips_insn (const struct mips_opcode *opc) |
252b5132 RH |
10216 | { |
10217 | const char *p = opc->args; | |
10218 | char c; | |
10219 | unsigned long used_bits = opc->mask; | |
10220 | ||
10221 | if ((used_bits & opc->match) != opc->match) | |
10222 | { | |
10223 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
10224 | opc->name, opc->args); | |
10225 | return 0; | |
10226 | } | |
10227 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
10228 | while (*p) | |
10229 | switch (c = *p++) | |
10230 | { | |
10231 | case ',': break; | |
10232 | case '(': break; | |
10233 | case ')': break; | |
af7ee8bf CD |
10234 | case '+': |
10235 | switch (c = *p++) | |
10236 | { | |
9bcd4f99 TS |
10237 | case '1': USE_BITS (OP_MASK_UDI1, OP_SH_UDI1); break; |
10238 | case '2': USE_BITS (OP_MASK_UDI2, OP_SH_UDI2); break; | |
10239 | case '3': USE_BITS (OP_MASK_UDI3, OP_SH_UDI3); break; | |
10240 | case '4': USE_BITS (OP_MASK_UDI4, OP_SH_UDI4); break; | |
af7ee8bf CD |
10241 | case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10242 | case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
10243 | case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
bbcc0807 CD |
10244 | case 'D': USE_BITS (OP_MASK_RD, OP_SH_RD); |
10245 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
5f74bc13 CD |
10246 | case 'E': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10247 | case 'F': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
10248 | case 'G': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
10249 | case 'H': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
10250 | case 'I': break; | |
ef2e4d86 CF |
10251 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; |
10252 | case 'T': USE_BITS (OP_MASK_RT, OP_SH_RT); | |
10253 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
bb35fb24 NC |
10254 | case 'x': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; |
10255 | case 'X': USE_BITS (OP_MASK_BBITIND, OP_SH_BBITIND); break; | |
10256 | case 'p': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
10257 | case 'P': USE_BITS (OP_MASK_CINSPOS, OP_SH_CINSPOS); break; | |
dd3cbb7e | 10258 | case 'Q': USE_BITS (OP_MASK_SEQI, OP_SH_SEQI); break; |
bb35fb24 NC |
10259 | case 's': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; |
10260 | case 'S': USE_BITS (OP_MASK_CINSLM1, OP_SH_CINSLM1); break; | |
98675402 RS |
10261 | case 'z': USE_BITS (OP_MASK_RZ, OP_SH_RZ); break; |
10262 | case 'Z': USE_BITS (OP_MASK_FZ, OP_SH_FZ); break; | |
10263 | case 'a': USE_BITS (OP_MASK_OFFSET_A, OP_SH_OFFSET_A); break; | |
10264 | case 'b': USE_BITS (OP_MASK_OFFSET_B, OP_SH_OFFSET_B); break; | |
10265 | case 'c': USE_BITS (OP_MASK_OFFSET_C, OP_SH_OFFSET_C); break; | |
bb35fb24 | 10266 | |
af7ee8bf CD |
10267 | default: |
10268 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
10269 | c, opc->name, opc->args); | |
10270 | return 0; | |
10271 | } | |
10272 | break; | |
252b5132 RH |
10273 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
10274 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
10275 | case 'A': break; | |
4372b673 | 10276 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
10277 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
10278 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
10279 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10280 | case 'F': break; | |
10281 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 10282 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 10283 | case 'I': break; |
e972090a | 10284 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
af7ee8bf | 10285 | case 'K': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
10286 | case 'L': break; |
10287 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
10288 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
10289 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
10290 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
10291 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
10292 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
10293 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10294 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
10295 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10296 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
10297 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
10298 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
10299 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
10300 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
10301 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10302 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
10303 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
10304 | case 'f': break; | |
10305 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
10306 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
10307 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10308 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
10309 | case 'l': break; | |
10310 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10311 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
10312 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
10313 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10314 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10315 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10316 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
10317 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10318 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
10319 | case 'x': break; | |
10320 | case 'z': break; | |
10321 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
10322 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
10323 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
60b63b72 RS |
10324 | case 'e': USE_BITS (OP_MASK_VECBYTE, OP_SH_VECBYTE); break; |
10325 | case '%': USE_BITS (OP_MASK_VECALIGN, OP_SH_VECALIGN); break; | |
10326 | case '[': break; | |
10327 | case ']': break; | |
620edafd | 10328 | case '1': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8b082fb1 | 10329 | case '2': USE_BITS (OP_MASK_BP, OP_SH_BP); break; |
74cd071d CF |
10330 | case '3': USE_BITS (OP_MASK_SA3, OP_SH_SA3); break; |
10331 | case '4': USE_BITS (OP_MASK_SA4, OP_SH_SA4); break; | |
10332 | case '5': USE_BITS (OP_MASK_IMM8, OP_SH_IMM8); break; | |
10333 | case '6': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
10334 | case '7': USE_BITS (OP_MASK_DSPACC, OP_SH_DSPACC); break; | |
10335 | case '8': USE_BITS (OP_MASK_WRDSP, OP_SH_WRDSP); break; | |
10336 | case '9': USE_BITS (OP_MASK_DSPACC_S, OP_SH_DSPACC_S);break; | |
10337 | case '0': USE_BITS (OP_MASK_DSPSFT, OP_SH_DSPSFT); break; | |
10338 | case '\'': USE_BITS (OP_MASK_RDDSP, OP_SH_RDDSP); break; | |
10339 | case ':': USE_BITS (OP_MASK_DSPSFT_7, OP_SH_DSPSFT_7);break; | |
10340 | case '@': USE_BITS (OP_MASK_IMM10, OP_SH_IMM10); break; | |
ef2e4d86 CF |
10341 | case '!': USE_BITS (OP_MASK_MT_U, OP_SH_MT_U); break; |
10342 | case '$': USE_BITS (OP_MASK_MT_H, OP_SH_MT_H); break; | |
10343 | case '*': USE_BITS (OP_MASK_MTACC_T, OP_SH_MTACC_T); break; | |
10344 | case '&': USE_BITS (OP_MASK_MTACC_D, OP_SH_MTACC_D); break; | |
dec0624d MR |
10345 | case '\\': USE_BITS (OP_MASK_3BITPOS, OP_SH_3BITPOS); break; |
10346 | case '~': USE_BITS (OP_MASK_OFFSET12, OP_SH_OFFSET12); break; | |
ef2e4d86 | 10347 | case 'g': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
10348 | default: |
10349 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
10350 | c, opc->name, opc->args); | |
10351 | return 0; | |
10352 | } | |
10353 | #undef USE_BITS | |
10354 | if (used_bits != 0xffffffff) | |
10355 | { | |
10356 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
10357 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
10358 | return 0; | |
10359 | } | |
10360 | return 1; | |
10361 | } | |
10362 | ||
df58fc94 RS |
10363 | /* For consistency checking, verify that the length implied matches the |
10364 | major opcode and that all bits are specified either by the match/mask | |
10365 | part of the instruction definition, or by the operand list. */ | |
10366 | ||
10367 | static int | |
10368 | validate_micromips_insn (const struct mips_opcode *opc) | |
10369 | { | |
10370 | unsigned long match = opc->match; | |
10371 | unsigned long mask = opc->mask; | |
10372 | const char *p = opc->args; | |
10373 | unsigned long insn_bits; | |
10374 | unsigned long used_bits; | |
10375 | unsigned long major; | |
10376 | unsigned int length; | |
10377 | char e; | |
10378 | char c; | |
10379 | ||
10380 | if ((mask & match) != match) | |
10381 | { | |
10382 | as_bad (_("Internal error: bad microMIPS opcode (mask error): %s %s"), | |
10383 | opc->name, opc->args); | |
10384 | return 0; | |
10385 | } | |
10386 | length = micromips_insn_length (opc); | |
10387 | if (length != 2 && length != 4) | |
10388 | { | |
10389 | as_bad (_("Internal error: bad microMIPS opcode (incorrect length: %u): " | |
10390 | "%s %s"), length, opc->name, opc->args); | |
10391 | return 0; | |
10392 | } | |
10393 | major = match >> (10 + 8 * (length - 2)); | |
10394 | if ((length == 2 && (major & 7) != 1 && (major & 6) != 2) | |
10395 | || (length == 4 && (major & 7) != 0 && (major & 4) != 4)) | |
10396 | { | |
10397 | as_bad (_("Internal error: bad microMIPS opcode " | |
10398 | "(opcode/length mismatch): %s %s"), opc->name, opc->args); | |
10399 | return 0; | |
10400 | } | |
10401 | ||
10402 | /* Shift piecewise to avoid an overflow where unsigned long is 32-bit. */ | |
10403 | insn_bits = 1 << 4 * length; | |
10404 | insn_bits <<= 4 * length; | |
10405 | insn_bits -= 1; | |
10406 | used_bits = mask; | |
10407 | #define USE_BITS(field) \ | |
10408 | (used_bits |= MICROMIPSOP_MASK_##field << MICROMIPSOP_SH_##field) | |
10409 | while (*p) | |
10410 | switch (c = *p++) | |
10411 | { | |
10412 | case ',': break; | |
10413 | case '(': break; | |
10414 | case ')': break; | |
10415 | case '+': | |
10416 | e = c; | |
10417 | switch (c = *p++) | |
10418 | { | |
10419 | case 'A': USE_BITS (EXTLSB); break; | |
10420 | case 'B': USE_BITS (INSMSB); break; | |
10421 | case 'C': USE_BITS (EXTMSBD); break; | |
10422 | case 'D': USE_BITS (RS); USE_BITS (SEL); break; | |
10423 | case 'E': USE_BITS (EXTLSB); break; | |
10424 | case 'F': USE_BITS (INSMSB); break; | |
10425 | case 'G': USE_BITS (EXTMSBD); break; | |
10426 | case 'H': USE_BITS (EXTMSBD); break; | |
10427 | default: | |
10428 | as_bad (_("Internal error: bad mips opcode " | |
10429 | "(unknown extension operand type `%c%c'): %s %s"), | |
10430 | e, c, opc->name, opc->args); | |
10431 | return 0; | |
10432 | } | |
10433 | break; | |
10434 | case 'm': | |
10435 | e = c; | |
10436 | switch (c = *p++) | |
10437 | { | |
10438 | case 'A': USE_BITS (IMMA); break; | |
10439 | case 'B': USE_BITS (IMMB); break; | |
10440 | case 'C': USE_BITS (IMMC); break; | |
10441 | case 'D': USE_BITS (IMMD); break; | |
10442 | case 'E': USE_BITS (IMME); break; | |
10443 | case 'F': USE_BITS (IMMF); break; | |
10444 | case 'G': USE_BITS (IMMG); break; | |
10445 | case 'H': USE_BITS (IMMH); break; | |
10446 | case 'I': USE_BITS (IMMI); break; | |
10447 | case 'J': USE_BITS (IMMJ); break; | |
10448 | case 'L': USE_BITS (IMML); break; | |
10449 | case 'M': USE_BITS (IMMM); break; | |
10450 | case 'N': USE_BITS (IMMN); break; | |
10451 | case 'O': USE_BITS (IMMO); break; | |
10452 | case 'P': USE_BITS (IMMP); break; | |
10453 | case 'Q': USE_BITS (IMMQ); break; | |
10454 | case 'U': USE_BITS (IMMU); break; | |
10455 | case 'W': USE_BITS (IMMW); break; | |
10456 | case 'X': USE_BITS (IMMX); break; | |
10457 | case 'Y': USE_BITS (IMMY); break; | |
10458 | case 'Z': break; | |
10459 | case 'a': break; | |
10460 | case 'b': USE_BITS (MB); break; | |
10461 | case 'c': USE_BITS (MC); break; | |
10462 | case 'd': USE_BITS (MD); break; | |
10463 | case 'e': USE_BITS (ME); break; | |
10464 | case 'f': USE_BITS (MF); break; | |
10465 | case 'g': USE_BITS (MG); break; | |
10466 | case 'h': USE_BITS (MH); break; | |
10467 | case 'i': USE_BITS (MI); break; | |
10468 | case 'j': USE_BITS (MJ); break; | |
10469 | case 'l': USE_BITS (ML); break; | |
10470 | case 'm': USE_BITS (MM); break; | |
10471 | case 'n': USE_BITS (MN); break; | |
10472 | case 'p': USE_BITS (MP); break; | |
10473 | case 'q': USE_BITS (MQ); break; | |
10474 | case 'r': break; | |
10475 | case 's': break; | |
10476 | case 't': break; | |
10477 | case 'x': break; | |
10478 | case 'y': break; | |
10479 | case 'z': break; | |
10480 | default: | |
10481 | as_bad (_("Internal error: bad mips opcode " | |
10482 | "(unknown extension operand type `%c%c'): %s %s"), | |
10483 | e, c, opc->name, opc->args); | |
10484 | return 0; | |
10485 | } | |
10486 | break; | |
10487 | case '.': USE_BITS (OFFSET10); break; | |
10488 | case '1': USE_BITS (STYPE); break; | |
10489 | case '<': USE_BITS (SHAMT); break; | |
10490 | case '>': USE_BITS (SHAMT); break; | |
10491 | case 'B': USE_BITS (CODE10); break; | |
10492 | case 'C': USE_BITS (COPZ); break; | |
10493 | case 'D': USE_BITS (FD); break; | |
10494 | case 'E': USE_BITS (RT); break; | |
10495 | case 'G': USE_BITS (RS); break; | |
444d75be | 10496 | case 'H': USE_BITS (SEL); break; |
df58fc94 RS |
10497 | case 'K': USE_BITS (RS); break; |
10498 | case 'M': USE_BITS (CCC); break; | |
10499 | case 'N': USE_BITS (BCC); break; | |
10500 | case 'R': USE_BITS (FR); break; | |
10501 | case 'S': USE_BITS (FS); break; | |
10502 | case 'T': USE_BITS (FT); break; | |
10503 | case 'V': USE_BITS (FS); break; | |
dec0624d | 10504 | case '\\': USE_BITS (3BITPOS); break; |
df58fc94 RS |
10505 | case 'a': USE_BITS (TARGET); break; |
10506 | case 'b': USE_BITS (RS); break; | |
10507 | case 'c': USE_BITS (CODE); break; | |
10508 | case 'd': USE_BITS (RD); break; | |
10509 | case 'h': USE_BITS (PREFX); break; | |
10510 | case 'i': USE_BITS (IMMEDIATE); break; | |
10511 | case 'j': USE_BITS (DELTA); break; | |
10512 | case 'k': USE_BITS (CACHE); break; | |
10513 | case 'n': USE_BITS (RT); break; | |
10514 | case 'o': USE_BITS (DELTA); break; | |
10515 | case 'p': USE_BITS (DELTA); break; | |
10516 | case 'q': USE_BITS (CODE2); break; | |
10517 | case 'r': USE_BITS (RS); break; | |
10518 | case 's': USE_BITS (RS); break; | |
10519 | case 't': USE_BITS (RT); break; | |
10520 | case 'u': USE_BITS (IMMEDIATE); break; | |
10521 | case 'v': USE_BITS (RS); break; | |
10522 | case 'w': USE_BITS (RT); break; | |
10523 | case 'y': USE_BITS (RS3); break; | |
10524 | case 'z': break; | |
10525 | case '|': USE_BITS (TRAP); break; | |
10526 | case '~': USE_BITS (OFFSET12); break; | |
10527 | default: | |
10528 | as_bad (_("Internal error: bad microMIPS opcode " | |
10529 | "(unknown operand type `%c'): %s %s"), | |
10530 | c, opc->name, opc->args); | |
10531 | return 0; | |
10532 | } | |
10533 | #undef USE_BITS | |
10534 | if (used_bits != insn_bits) | |
10535 | { | |
10536 | if (~used_bits & insn_bits) | |
10537 | as_bad (_("Internal error: bad microMIPS opcode " | |
10538 | "(bits 0x%lx undefined): %s %s"), | |
10539 | ~used_bits & insn_bits, opc->name, opc->args); | |
10540 | if (used_bits & ~insn_bits) | |
10541 | as_bad (_("Internal error: bad microMIPS opcode " | |
10542 | "(bits 0x%lx defined): %s %s"), | |
10543 | used_bits & ~insn_bits, opc->name, opc->args); | |
10544 | return 0; | |
10545 | } | |
10546 | return 1; | |
10547 | } | |
10548 | ||
9bcd4f99 TS |
10549 | /* UDI immediates. */ |
10550 | struct mips_immed { | |
10551 | char type; | |
10552 | unsigned int shift; | |
10553 | unsigned long mask; | |
10554 | const char * desc; | |
10555 | }; | |
10556 | ||
10557 | static const struct mips_immed mips_immed[] = { | |
10558 | { '1', OP_SH_UDI1, OP_MASK_UDI1, 0}, | |
10559 | { '2', OP_SH_UDI2, OP_MASK_UDI2, 0}, | |
10560 | { '3', OP_SH_UDI3, OP_MASK_UDI3, 0}, | |
10561 | { '4', OP_SH_UDI4, OP_MASK_UDI4, 0}, | |
10562 | { 0,0,0,0 } | |
10563 | }; | |
10564 | ||
7455baf8 TS |
10565 | /* Check whether an odd floating-point register is allowed. */ |
10566 | static int | |
10567 | mips_oddfpreg_ok (const struct mips_opcode *insn, int argnum) | |
10568 | { | |
10569 | const char *s = insn->name; | |
10570 | ||
10571 | if (insn->pinfo == INSN_MACRO) | |
10572 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
10573 | return 1; | |
10574 | ||
10575 | if (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa)) | |
10576 | { | |
10577 | /* Allow odd registers for single-precision ops. */ | |
10578 | switch (insn->pinfo & (FP_S | FP_D)) | |
10579 | { | |
10580 | case FP_S: | |
10581 | case 0: | |
10582 | return 1; /* both single precision - ok */ | |
10583 | case FP_D: | |
10584 | return 0; /* both double precision - fail */ | |
10585 | default: | |
10586 | break; | |
10587 | } | |
10588 | ||
10589 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ | |
10590 | s = strchr (insn->name, '.'); | |
10591 | if (argnum == 2) | |
10592 | s = s != NULL ? strchr (s + 1, '.') : NULL; | |
10593 | return (s != NULL && (s[1] == 'w' || s[1] == 's')); | |
10594 | } | |
10595 | ||
10596 | /* Single-precision coprocessor loads and moves are OK too. */ | |
10597 | if ((insn->pinfo & FP_S) | |
10598 | && (insn->pinfo & (INSN_COPROC_MEMORY_DELAY | INSN_STORE_MEMORY | |
10599 | | INSN_LOAD_COPROC_DELAY | INSN_COPROC_MOVE_DELAY))) | |
10600 | return 1; | |
10601 | ||
10602 | return 0; | |
10603 | } | |
10604 | ||
df58fc94 RS |
10605 | /* Check if EXPR is a constant between MIN (inclusive) and MAX (exclusive) |
10606 | taking bits from BIT up. */ | |
10607 | static int | |
10608 | expr_const_in_range (expressionS *ep, offsetT min, offsetT max, int bit) | |
10609 | { | |
10610 | return (ep->X_op == O_constant | |
10611 | && (ep->X_add_number & ((1 << bit) - 1)) == 0 | |
10612 | && ep->X_add_number >= min << bit | |
10613 | && ep->X_add_number < max << bit); | |
10614 | } | |
10615 | ||
252b5132 RH |
10616 | /* This routine assembles an instruction into its binary format. As a |
10617 | side effect, it sets one of the global variables imm_reloc or | |
10618 | offset_reloc to the type of relocation to do if one of the operands | |
10619 | is an address expression. */ | |
10620 | ||
10621 | static void | |
17a2f251 | 10622 | mips_ip (char *str, struct mips_cl_insn *ip) |
252b5132 | 10623 | { |
df58fc94 RS |
10624 | bfd_boolean wrong_delay_slot_insns = FALSE; |
10625 | bfd_boolean need_delay_slot_ok = TRUE; | |
10626 | struct mips_opcode *firstinsn = NULL; | |
10627 | const struct mips_opcode *past; | |
10628 | struct hash_control *hash; | |
252b5132 RH |
10629 | char *s; |
10630 | const char *args; | |
43841e91 | 10631 | char c = 0; |
252b5132 RH |
10632 | struct mips_opcode *insn; |
10633 | char *argsStart; | |
10634 | unsigned int regno; | |
34224acf | 10635 | unsigned int lastregno; |
df58fc94 | 10636 | unsigned int destregno = 0; |
af7ee8bf | 10637 | unsigned int lastpos = 0; |
071742cf | 10638 | unsigned int limlo, limhi; |
252b5132 | 10639 | char *s_reset; |
74cd071d | 10640 | offsetT min_range, max_range; |
df58fc94 | 10641 | long opend; |
a40bc9dd | 10642 | char *name; |
707bfff6 TS |
10643 | int argnum; |
10644 | unsigned int rtype; | |
df58fc94 | 10645 | char *dot; |
a40bc9dd | 10646 | long end; |
252b5132 RH |
10647 | |
10648 | insn_error = NULL; | |
10649 | ||
df58fc94 RS |
10650 | if (mips_opts.micromips) |
10651 | { | |
10652 | hash = micromips_op_hash; | |
10653 | past = µmips_opcodes[bfd_micromips_num_opcodes]; | |
10654 | } | |
10655 | else | |
10656 | { | |
10657 | hash = op_hash; | |
10658 | past = &mips_opcodes[NUMOPCODES]; | |
10659 | } | |
10660 | forced_insn_length = 0; | |
252b5132 | 10661 | insn = NULL; |
252b5132 | 10662 | |
df58fc94 | 10663 | /* We first try to match an instruction up to a space or to the end. */ |
a40bc9dd RS |
10664 | for (end = 0; str[end] != '\0' && !ISSPACE (str[end]); end++) |
10665 | continue; | |
bdaaa2e1 | 10666 | |
a40bc9dd RS |
10667 | /* Make a copy of the instruction so that we can fiddle with it. */ |
10668 | name = alloca (end + 1); | |
10669 | memcpy (name, str, end); | |
10670 | name[end] = '\0'; | |
252b5132 | 10671 | |
df58fc94 RS |
10672 | for (;;) |
10673 | { | |
10674 | insn = (struct mips_opcode *) hash_find (hash, name); | |
10675 | ||
10676 | if (insn != NULL || !mips_opts.micromips) | |
10677 | break; | |
10678 | if (forced_insn_length) | |
10679 | break; | |
10680 | ||
10681 | /* See if there's an instruction size override suffix, | |
10682 | either `16' or `32', at the end of the mnemonic proper, | |
10683 | that defines the operation, i.e. before the first `.' | |
10684 | character if any. Strip it and retry. */ | |
10685 | dot = strchr (name, '.'); | |
10686 | opend = dot != NULL ? dot - name : end; | |
10687 | if (opend < 3) | |
10688 | break; | |
10689 | if (name[opend - 2] == '1' && name[opend - 1] == '6') | |
10690 | forced_insn_length = 2; | |
10691 | else if (name[opend - 2] == '3' && name[opend - 1] == '2') | |
10692 | forced_insn_length = 4; | |
10693 | else | |
10694 | break; | |
10695 | memcpy (name + opend - 2, name + opend, end - opend + 1); | |
10696 | } | |
252b5132 RH |
10697 | if (insn == NULL) |
10698 | { | |
a40bc9dd RS |
10699 | insn_error = _("Unrecognized opcode"); |
10700 | return; | |
252b5132 RH |
10701 | } |
10702 | ||
df58fc94 RS |
10703 | /* For microMIPS instructions placed in a fixed-length branch delay slot |
10704 | we make up to two passes over the relevant fragment of the opcode | |
10705 | table. First we try instructions that meet the delay slot's length | |
10706 | requirement. If none matched, then we retry with the remaining ones | |
10707 | and if one matches, then we use it and then issue an appropriate | |
10708 | warning later on. */ | |
a40bc9dd | 10709 | argsStart = s = str + end; |
252b5132 RH |
10710 | for (;;) |
10711 | { | |
df58fc94 RS |
10712 | bfd_boolean delay_slot_ok; |
10713 | bfd_boolean size_ok; | |
b34976b6 | 10714 | bfd_boolean ok; |
252b5132 | 10715 | |
a40bc9dd | 10716 | gas_assert (strcmp (insn->name, name) == 0); |
252b5132 | 10717 | |
f79e2745 | 10718 | ok = is_opcode_valid (insn); |
df58fc94 RS |
10719 | size_ok = is_size_valid (insn); |
10720 | delay_slot_ok = is_delay_slot_valid (insn); | |
10721 | if (!delay_slot_ok && !wrong_delay_slot_insns) | |
252b5132 | 10722 | { |
df58fc94 RS |
10723 | firstinsn = insn; |
10724 | wrong_delay_slot_insns = TRUE; | |
10725 | } | |
10726 | if (!ok || !size_ok || delay_slot_ok != need_delay_slot_ok) | |
10727 | { | |
10728 | static char buf[256]; | |
10729 | ||
10730 | if (insn + 1 < past && strcmp (insn->name, insn[1].name) == 0) | |
252b5132 RH |
10731 | { |
10732 | ++insn; | |
10733 | continue; | |
10734 | } | |
df58fc94 | 10735 | if (wrong_delay_slot_insns && need_delay_slot_ok) |
beae10d5 | 10736 | { |
df58fc94 RS |
10737 | gas_assert (firstinsn); |
10738 | need_delay_slot_ok = FALSE; | |
10739 | past = insn + 1; | |
10740 | insn = firstinsn; | |
10741 | continue; | |
252b5132 | 10742 | } |
df58fc94 RS |
10743 | |
10744 | if (insn_error) | |
10745 | return; | |
10746 | ||
10747 | if (!ok) | |
7bd942df | 10748 | sprintf (buf, _("Opcode not supported on this processor: %s (%s)"), |
df58fc94 RS |
10749 | mips_cpu_info_from_arch (mips_opts.arch)->name, |
10750 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
10751 | else | |
10752 | sprintf (buf, _("Unrecognized %u-bit version of microMIPS opcode"), | |
10753 | 8 * forced_insn_length); | |
10754 | insn_error = buf; | |
10755 | ||
10756 | return; | |
252b5132 RH |
10757 | } |
10758 | ||
1e915849 | 10759 | create_insn (ip, insn); |
268f6bed | 10760 | insn_error = NULL; |
707bfff6 | 10761 | argnum = 1; |
24864476 | 10762 | lastregno = 0xffffffff; |
252b5132 RH |
10763 | for (args = insn->args;; ++args) |
10764 | { | |
deec1734 CD |
10765 | int is_mdmx; |
10766 | ||
ad8d3bb3 | 10767 | s += strspn (s, " \t"); |
deec1734 | 10768 | is_mdmx = 0; |
252b5132 RH |
10769 | switch (*args) |
10770 | { | |
10771 | case '\0': /* end of args */ | |
10772 | if (*s == '\0') | |
10773 | return; | |
10774 | break; | |
10775 | ||
90ecf173 | 10776 | case '2': /* DSP 2-bit unsigned immediate in bit 11. */ |
df58fc94 | 10777 | gas_assert (!mips_opts.micromips); |
8b082fb1 TS |
10778 | my_getExpression (&imm_expr, s); |
10779 | check_absolute_expr (ip, &imm_expr); | |
10780 | if ((unsigned long) imm_expr.X_add_number != 1 | |
10781 | && (unsigned long) imm_expr.X_add_number != 3) | |
10782 | { | |
10783 | as_bad (_("BALIGN immediate not 1 or 3 (%lu)"), | |
10784 | (unsigned long) imm_expr.X_add_number); | |
10785 | } | |
df58fc94 | 10786 | INSERT_OPERAND (0, BP, *ip, imm_expr.X_add_number); |
8b082fb1 TS |
10787 | imm_expr.X_op = O_absent; |
10788 | s = expr_end; | |
10789 | continue; | |
10790 | ||
90ecf173 | 10791 | case '3': /* DSP 3-bit unsigned immediate in bit 21. */ |
df58fc94 | 10792 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10793 | my_getExpression (&imm_expr, s); |
10794 | check_absolute_expr (ip, &imm_expr); | |
10795 | if (imm_expr.X_add_number & ~OP_MASK_SA3) | |
10796 | { | |
a9e24354 TS |
10797 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10798 | OP_MASK_SA3, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10799 | } |
df58fc94 | 10800 | INSERT_OPERAND (0, SA3, *ip, imm_expr.X_add_number); |
74cd071d CF |
10801 | imm_expr.X_op = O_absent; |
10802 | s = expr_end; | |
10803 | continue; | |
10804 | ||
90ecf173 | 10805 | case '4': /* DSP 4-bit unsigned immediate in bit 21. */ |
df58fc94 | 10806 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10807 | my_getExpression (&imm_expr, s); |
10808 | check_absolute_expr (ip, &imm_expr); | |
10809 | if (imm_expr.X_add_number & ~OP_MASK_SA4) | |
10810 | { | |
a9e24354 TS |
10811 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10812 | OP_MASK_SA4, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10813 | } |
df58fc94 | 10814 | INSERT_OPERAND (0, SA4, *ip, imm_expr.X_add_number); |
74cd071d CF |
10815 | imm_expr.X_op = O_absent; |
10816 | s = expr_end; | |
10817 | continue; | |
10818 | ||
90ecf173 | 10819 | case '5': /* DSP 8-bit unsigned immediate in bit 16. */ |
df58fc94 | 10820 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10821 | my_getExpression (&imm_expr, s); |
10822 | check_absolute_expr (ip, &imm_expr); | |
10823 | if (imm_expr.X_add_number & ~OP_MASK_IMM8) | |
10824 | { | |
a9e24354 TS |
10825 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10826 | OP_MASK_IMM8, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10827 | } |
df58fc94 | 10828 | INSERT_OPERAND (0, IMM8, *ip, imm_expr.X_add_number); |
74cd071d CF |
10829 | imm_expr.X_op = O_absent; |
10830 | s = expr_end; | |
10831 | continue; | |
10832 | ||
90ecf173 | 10833 | case '6': /* DSP 5-bit unsigned immediate in bit 21. */ |
df58fc94 | 10834 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10835 | my_getExpression (&imm_expr, s); |
10836 | check_absolute_expr (ip, &imm_expr); | |
10837 | if (imm_expr.X_add_number & ~OP_MASK_RS) | |
10838 | { | |
a9e24354 TS |
10839 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10840 | OP_MASK_RS, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10841 | } |
df58fc94 | 10842 | INSERT_OPERAND (0, RS, *ip, imm_expr.X_add_number); |
74cd071d CF |
10843 | imm_expr.X_op = O_absent; |
10844 | s = expr_end; | |
10845 | continue; | |
10846 | ||
90ecf173 | 10847 | case '7': /* Four DSP accumulators in bits 11,12. */ |
df58fc94 | 10848 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10849 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
10850 | s[3] >= '0' && s[3] <= '3') | |
10851 | { | |
10852 | regno = s[3] - '0'; | |
10853 | s += 4; | |
df58fc94 | 10854 | INSERT_OPERAND (0, DSPACC, *ip, regno); |
74cd071d CF |
10855 | continue; |
10856 | } | |
10857 | else | |
10858 | as_bad (_("Invalid dsp acc register")); | |
10859 | break; | |
10860 | ||
90ecf173 | 10861 | case '8': /* DSP 6-bit unsigned immediate in bit 11. */ |
df58fc94 | 10862 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10863 | my_getExpression (&imm_expr, s); |
10864 | check_absolute_expr (ip, &imm_expr); | |
10865 | if (imm_expr.X_add_number & ~OP_MASK_WRDSP) | |
10866 | { | |
a9e24354 TS |
10867 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10868 | OP_MASK_WRDSP, | |
10869 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10870 | } |
df58fc94 | 10871 | INSERT_OPERAND (0, WRDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
10872 | imm_expr.X_op = O_absent; |
10873 | s = expr_end; | |
10874 | continue; | |
10875 | ||
90ecf173 | 10876 | case '9': /* Four DSP accumulators in bits 21,22. */ |
df58fc94 | 10877 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10878 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
10879 | s[3] >= '0' && s[3] <= '3') | |
10880 | { | |
10881 | regno = s[3] - '0'; | |
10882 | s += 4; | |
df58fc94 | 10883 | INSERT_OPERAND (0, DSPACC_S, *ip, regno); |
74cd071d CF |
10884 | continue; |
10885 | } | |
10886 | else | |
10887 | as_bad (_("Invalid dsp acc register")); | |
10888 | break; | |
10889 | ||
90ecf173 | 10890 | case '0': /* DSP 6-bit signed immediate in bit 20. */ |
df58fc94 | 10891 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10892 | my_getExpression (&imm_expr, s); |
10893 | check_absolute_expr (ip, &imm_expr); | |
10894 | min_range = -((OP_MASK_DSPSFT + 1) >> 1); | |
10895 | max_range = ((OP_MASK_DSPSFT + 1) >> 1) - 1; | |
10896 | if (imm_expr.X_add_number < min_range || | |
10897 | imm_expr.X_add_number > max_range) | |
10898 | { | |
a9e24354 TS |
10899 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
10900 | (long) min_range, (long) max_range, | |
10901 | (long) imm_expr.X_add_number); | |
74cd071d | 10902 | } |
df58fc94 | 10903 | INSERT_OPERAND (0, DSPSFT, *ip, imm_expr.X_add_number); |
74cd071d CF |
10904 | imm_expr.X_op = O_absent; |
10905 | s = expr_end; | |
10906 | continue; | |
10907 | ||
90ecf173 | 10908 | case '\'': /* DSP 6-bit unsigned immediate in bit 16. */ |
df58fc94 | 10909 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10910 | my_getExpression (&imm_expr, s); |
10911 | check_absolute_expr (ip, &imm_expr); | |
10912 | if (imm_expr.X_add_number & ~OP_MASK_RDDSP) | |
10913 | { | |
a9e24354 TS |
10914 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
10915 | OP_MASK_RDDSP, | |
10916 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 10917 | } |
df58fc94 | 10918 | INSERT_OPERAND (0, RDDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
10919 | imm_expr.X_op = O_absent; |
10920 | s = expr_end; | |
10921 | continue; | |
10922 | ||
90ecf173 | 10923 | case ':': /* DSP 7-bit signed immediate in bit 19. */ |
df58fc94 | 10924 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10925 | my_getExpression (&imm_expr, s); |
10926 | check_absolute_expr (ip, &imm_expr); | |
10927 | min_range = -((OP_MASK_DSPSFT_7 + 1) >> 1); | |
10928 | max_range = ((OP_MASK_DSPSFT_7 + 1) >> 1) - 1; | |
10929 | if (imm_expr.X_add_number < min_range || | |
10930 | imm_expr.X_add_number > max_range) | |
10931 | { | |
a9e24354 TS |
10932 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
10933 | (long) min_range, (long) max_range, | |
10934 | (long) imm_expr.X_add_number); | |
74cd071d | 10935 | } |
df58fc94 | 10936 | INSERT_OPERAND (0, DSPSFT_7, *ip, imm_expr.X_add_number); |
74cd071d CF |
10937 | imm_expr.X_op = O_absent; |
10938 | s = expr_end; | |
10939 | continue; | |
10940 | ||
90ecf173 | 10941 | case '@': /* DSP 10-bit signed immediate in bit 16. */ |
df58fc94 | 10942 | gas_assert (!mips_opts.micromips); |
74cd071d CF |
10943 | my_getExpression (&imm_expr, s); |
10944 | check_absolute_expr (ip, &imm_expr); | |
10945 | min_range = -((OP_MASK_IMM10 + 1) >> 1); | |
10946 | max_range = ((OP_MASK_IMM10 + 1) >> 1) - 1; | |
10947 | if (imm_expr.X_add_number < min_range || | |
10948 | imm_expr.X_add_number > max_range) | |
10949 | { | |
a9e24354 TS |
10950 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
10951 | (long) min_range, (long) max_range, | |
10952 | (long) imm_expr.X_add_number); | |
74cd071d | 10953 | } |
df58fc94 | 10954 | INSERT_OPERAND (0, IMM10, *ip, imm_expr.X_add_number); |
74cd071d CF |
10955 | imm_expr.X_op = O_absent; |
10956 | s = expr_end; | |
10957 | continue; | |
10958 | ||
a9e24354 | 10959 | case '!': /* MT usermode flag bit. */ |
df58fc94 | 10960 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10961 | my_getExpression (&imm_expr, s); |
10962 | check_absolute_expr (ip, &imm_expr); | |
10963 | if (imm_expr.X_add_number & ~OP_MASK_MT_U) | |
a9e24354 TS |
10964 | as_bad (_("MT usermode bit not 0 or 1 (%lu)"), |
10965 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 10966 | INSERT_OPERAND (0, MT_U, *ip, imm_expr.X_add_number); |
ef2e4d86 CF |
10967 | imm_expr.X_op = O_absent; |
10968 | s = expr_end; | |
10969 | continue; | |
10970 | ||
a9e24354 | 10971 | case '$': /* MT load high flag bit. */ |
df58fc94 | 10972 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10973 | my_getExpression (&imm_expr, s); |
10974 | check_absolute_expr (ip, &imm_expr); | |
10975 | if (imm_expr.X_add_number & ~OP_MASK_MT_H) | |
a9e24354 TS |
10976 | as_bad (_("MT load high bit not 0 or 1 (%lu)"), |
10977 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 10978 | INSERT_OPERAND (0, MT_H, *ip, imm_expr.X_add_number); |
ef2e4d86 CF |
10979 | imm_expr.X_op = O_absent; |
10980 | s = expr_end; | |
10981 | continue; | |
10982 | ||
90ecf173 | 10983 | case '*': /* Four DSP accumulators in bits 18,19. */ |
df58fc94 | 10984 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10985 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
10986 | s[3] >= '0' && s[3] <= '3') | |
10987 | { | |
10988 | regno = s[3] - '0'; | |
10989 | s += 4; | |
df58fc94 | 10990 | INSERT_OPERAND (0, MTACC_T, *ip, regno); |
ef2e4d86 CF |
10991 | continue; |
10992 | } | |
10993 | else | |
10994 | as_bad (_("Invalid dsp/smartmips acc register")); | |
10995 | break; | |
10996 | ||
90ecf173 | 10997 | case '&': /* Four DSP accumulators in bits 13,14. */ |
df58fc94 | 10998 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
10999 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && |
11000 | s[3] >= '0' && s[3] <= '3') | |
11001 | { | |
11002 | regno = s[3] - '0'; | |
11003 | s += 4; | |
df58fc94 | 11004 | INSERT_OPERAND (0, MTACC_D, *ip, regno); |
ef2e4d86 CF |
11005 | continue; |
11006 | } | |
11007 | else | |
11008 | as_bad (_("Invalid dsp/smartmips acc register")); | |
11009 | break; | |
11010 | ||
dec0624d MR |
11011 | case '\\': /* 3-bit bit position. */ |
11012 | { | |
2906b037 MR |
11013 | unsigned long mask = (mips_opts.micromips |
11014 | ? MICROMIPSOP_MASK_3BITPOS | |
11015 | : OP_MASK_3BITPOS); | |
dec0624d MR |
11016 | |
11017 | my_getExpression (&imm_expr, s); | |
11018 | check_absolute_expr (ip, &imm_expr); | |
11019 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11020 | as_warn (_("Bit position for %s not in range 0..%lu (%lu)"), | |
11021 | ip->insn_mo->name, | |
11022 | mask, (unsigned long) imm_expr.X_add_number); | |
11023 | INSERT_OPERAND (mips_opts.micromips, | |
11024 | 3BITPOS, *ip, imm_expr.X_add_number); | |
11025 | imm_expr.X_op = O_absent; | |
11026 | s = expr_end; | |
11027 | } | |
11028 | continue; | |
11029 | ||
252b5132 | 11030 | case ',': |
a339155f | 11031 | ++argnum; |
252b5132 RH |
11032 | if (*s++ == *args) |
11033 | continue; | |
11034 | s--; | |
11035 | switch (*++args) | |
11036 | { | |
11037 | case 'r': | |
11038 | case 'v': | |
df58fc94 | 11039 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, lastregno); |
252b5132 RH |
11040 | continue; |
11041 | ||
11042 | case 'w': | |
df58fc94 | 11043 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, lastregno); |
38487616 TS |
11044 | continue; |
11045 | ||
252b5132 | 11046 | case 'W': |
df58fc94 RS |
11047 | gas_assert (!mips_opts.micromips); |
11048 | INSERT_OPERAND (0, FT, *ip, lastregno); | |
252b5132 RH |
11049 | continue; |
11050 | ||
11051 | case 'V': | |
df58fc94 | 11052 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, lastregno); |
252b5132 RH |
11053 | continue; |
11054 | } | |
11055 | break; | |
11056 | ||
11057 | case '(': | |
11058 | /* Handle optional base register. | |
11059 | Either the base register is omitted or | |
bdaaa2e1 | 11060 | we must have a left paren. */ |
252b5132 RH |
11061 | /* This is dependent on the next operand specifier |
11062 | is a base register specification. */ | |
df58fc94 RS |
11063 | gas_assert (args[1] == 'b' |
11064 | || (mips_opts.micromips | |
11065 | && args[1] == 'm' | |
11066 | && (args[2] == 'l' || args[2] == 'n' | |
11067 | || args[2] == 's' || args[2] == 'a'))); | |
11068 | if (*s == '\0' && args[1] == 'b') | |
252b5132 | 11069 | return; |
df58fc94 | 11070 | /* Fall through. */ |
252b5132 | 11071 | |
90ecf173 | 11072 | case ')': /* These must match exactly. */ |
df58fc94 RS |
11073 | if (*s++ == *args) |
11074 | continue; | |
11075 | break; | |
11076 | ||
11077 | case '[': /* These must match exactly. */ | |
60b63b72 | 11078 | case ']': |
df58fc94 | 11079 | gas_assert (!mips_opts.micromips); |
252b5132 RH |
11080 | if (*s++ == *args) |
11081 | continue; | |
11082 | break; | |
11083 | ||
af7ee8bf CD |
11084 | case '+': /* Opcode extension character. */ |
11085 | switch (*++args) | |
11086 | { | |
9bcd4f99 TS |
11087 | case '1': /* UDI immediates. */ |
11088 | case '2': | |
11089 | case '3': | |
11090 | case '4': | |
df58fc94 | 11091 | gas_assert (!mips_opts.micromips); |
9bcd4f99 TS |
11092 | { |
11093 | const struct mips_immed *imm = mips_immed; | |
11094 | ||
11095 | while (imm->type && imm->type != *args) | |
11096 | ++imm; | |
11097 | if (! imm->type) | |
11098 | internalError (); | |
11099 | my_getExpression (&imm_expr, s); | |
11100 | check_absolute_expr (ip, &imm_expr); | |
11101 | if ((unsigned long) imm_expr.X_add_number & ~imm->mask) | |
11102 | { | |
11103 | as_warn (_("Illegal %s number (%lu, 0x%lx)"), | |
11104 | imm->desc ? imm->desc : ip->insn_mo->name, | |
11105 | (unsigned long) imm_expr.X_add_number, | |
11106 | (unsigned long) imm_expr.X_add_number); | |
90ecf173 | 11107 | imm_expr.X_add_number &= imm->mask; |
9bcd4f99 TS |
11108 | } |
11109 | ip->insn_opcode |= ((unsigned long) imm_expr.X_add_number | |
11110 | << imm->shift); | |
11111 | imm_expr.X_op = O_absent; | |
11112 | s = expr_end; | |
11113 | } | |
11114 | continue; | |
90ecf173 | 11115 | |
071742cf CD |
11116 | case 'A': /* ins/ext position, becomes LSB. */ |
11117 | limlo = 0; | |
11118 | limhi = 31; | |
5f74bc13 CD |
11119 | goto do_lsb; |
11120 | case 'E': | |
11121 | limlo = 32; | |
11122 | limhi = 63; | |
11123 | goto do_lsb; | |
90ecf173 | 11124 | do_lsb: |
071742cf CD |
11125 | my_getExpression (&imm_expr, s); |
11126 | check_absolute_expr (ip, &imm_expr); | |
11127 | if ((unsigned long) imm_expr.X_add_number < limlo | |
11128 | || (unsigned long) imm_expr.X_add_number > limhi) | |
11129 | { | |
11130 | as_bad (_("Improper position (%lu)"), | |
11131 | (unsigned long) imm_expr.X_add_number); | |
11132 | imm_expr.X_add_number = limlo; | |
11133 | } | |
11134 | lastpos = imm_expr.X_add_number; | |
df58fc94 RS |
11135 | INSERT_OPERAND (mips_opts.micromips, |
11136 | EXTLSB, *ip, imm_expr.X_add_number); | |
071742cf CD |
11137 | imm_expr.X_op = O_absent; |
11138 | s = expr_end; | |
11139 | continue; | |
11140 | ||
11141 | case 'B': /* ins size, becomes MSB. */ | |
11142 | limlo = 1; | |
11143 | limhi = 32; | |
5f74bc13 CD |
11144 | goto do_msb; |
11145 | case 'F': | |
11146 | limlo = 33; | |
11147 | limhi = 64; | |
11148 | goto do_msb; | |
90ecf173 | 11149 | do_msb: |
071742cf CD |
11150 | my_getExpression (&imm_expr, s); |
11151 | check_absolute_expr (ip, &imm_expr); | |
11152 | /* Check for negative input so that small negative numbers | |
11153 | will not succeed incorrectly. The checks against | |
11154 | (pos+size) transitively check "size" itself, | |
11155 | assuming that "pos" is reasonable. */ | |
11156 | if ((long) imm_expr.X_add_number < 0 | |
11157 | || ((unsigned long) imm_expr.X_add_number | |
11158 | + lastpos) < limlo | |
11159 | || ((unsigned long) imm_expr.X_add_number | |
11160 | + lastpos) > limhi) | |
11161 | { | |
11162 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
11163 | (unsigned long) imm_expr.X_add_number, | |
11164 | (unsigned long) lastpos); | |
11165 | imm_expr.X_add_number = limlo - lastpos; | |
11166 | } | |
df58fc94 RS |
11167 | INSERT_OPERAND (mips_opts.micromips, INSMSB, *ip, |
11168 | lastpos + imm_expr.X_add_number - 1); | |
071742cf CD |
11169 | imm_expr.X_op = O_absent; |
11170 | s = expr_end; | |
11171 | continue; | |
11172 | ||
11173 | case 'C': /* ext size, becomes MSBD. */ | |
11174 | limlo = 1; | |
11175 | limhi = 32; | |
5f74bc13 CD |
11176 | goto do_msbd; |
11177 | case 'G': | |
11178 | limlo = 33; | |
11179 | limhi = 64; | |
11180 | goto do_msbd; | |
11181 | case 'H': | |
11182 | limlo = 33; | |
11183 | limhi = 64; | |
11184 | goto do_msbd; | |
90ecf173 | 11185 | do_msbd: |
071742cf CD |
11186 | my_getExpression (&imm_expr, s); |
11187 | check_absolute_expr (ip, &imm_expr); | |
11188 | /* Check for negative input so that small negative numbers | |
11189 | will not succeed incorrectly. The checks against | |
11190 | (pos+size) transitively check "size" itself, | |
11191 | assuming that "pos" is reasonable. */ | |
11192 | if ((long) imm_expr.X_add_number < 0 | |
11193 | || ((unsigned long) imm_expr.X_add_number | |
11194 | + lastpos) < limlo | |
11195 | || ((unsigned long) imm_expr.X_add_number | |
11196 | + lastpos) > limhi) | |
11197 | { | |
11198 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
11199 | (unsigned long) imm_expr.X_add_number, | |
11200 | (unsigned long) lastpos); | |
11201 | imm_expr.X_add_number = limlo - lastpos; | |
11202 | } | |
df58fc94 RS |
11203 | INSERT_OPERAND (mips_opts.micromips, |
11204 | EXTMSBD, *ip, imm_expr.X_add_number - 1); | |
071742cf CD |
11205 | imm_expr.X_op = O_absent; |
11206 | s = expr_end; | |
11207 | continue; | |
af7ee8bf | 11208 | |
bbcc0807 CD |
11209 | case 'D': |
11210 | /* +D is for disassembly only; never match. */ | |
11211 | break; | |
11212 | ||
5f74bc13 CD |
11213 | case 'I': |
11214 | /* "+I" is like "I", except that imm2_expr is used. */ | |
11215 | my_getExpression (&imm2_expr, s); | |
11216 | if (imm2_expr.X_op != O_big | |
11217 | && imm2_expr.X_op != O_constant) | |
11218 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
11219 | if (HAVE_32BIT_GPRS) |
11220 | normalize_constant_expr (&imm2_expr); | |
5f74bc13 CD |
11221 | s = expr_end; |
11222 | continue; | |
11223 | ||
707bfff6 | 11224 | case 'T': /* Coprocessor register. */ |
df58fc94 | 11225 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11226 | /* +T is for disassembly only; never match. */ |
11227 | break; | |
11228 | ||
707bfff6 | 11229 | case 't': /* Coprocessor register number. */ |
df58fc94 | 11230 | gas_assert (!mips_opts.micromips); |
ef2e4d86 CF |
11231 | if (s[0] == '$' && ISDIGIT (s[1])) |
11232 | { | |
11233 | ++s; | |
11234 | regno = 0; | |
11235 | do | |
11236 | { | |
11237 | regno *= 10; | |
11238 | regno += *s - '0'; | |
11239 | ++s; | |
11240 | } | |
11241 | while (ISDIGIT (*s)); | |
11242 | if (regno > 31) | |
11243 | as_bad (_("Invalid register number (%d)"), regno); | |
11244 | else | |
11245 | { | |
df58fc94 | 11246 | INSERT_OPERAND (0, RT, *ip, regno); |
ef2e4d86 CF |
11247 | continue; |
11248 | } | |
11249 | } | |
11250 | else | |
11251 | as_bad (_("Invalid coprocessor 0 register number")); | |
11252 | break; | |
11253 | ||
bb35fb24 NC |
11254 | case 'x': |
11255 | /* bbit[01] and bbit[01]32 bit index. Give error if index | |
11256 | is not in the valid range. */ | |
df58fc94 | 11257 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11258 | my_getExpression (&imm_expr, s); |
11259 | check_absolute_expr (ip, &imm_expr); | |
11260 | if ((unsigned) imm_expr.X_add_number > 31) | |
11261 | { | |
11262 | as_bad (_("Improper bit index (%lu)"), | |
11263 | (unsigned long) imm_expr.X_add_number); | |
11264 | imm_expr.X_add_number = 0; | |
11265 | } | |
df58fc94 | 11266 | INSERT_OPERAND (0, BBITIND, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11267 | imm_expr.X_op = O_absent; |
11268 | s = expr_end; | |
11269 | continue; | |
11270 | ||
11271 | case 'X': | |
11272 | /* bbit[01] bit index when bbit is used but we generate | |
11273 | bbit[01]32 because the index is over 32. Move to the | |
11274 | next candidate if index is not in the valid range. */ | |
df58fc94 | 11275 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11276 | my_getExpression (&imm_expr, s); |
11277 | check_absolute_expr (ip, &imm_expr); | |
11278 | if ((unsigned) imm_expr.X_add_number < 32 | |
11279 | || (unsigned) imm_expr.X_add_number > 63) | |
11280 | break; | |
df58fc94 | 11281 | INSERT_OPERAND (0, BBITIND, *ip, imm_expr.X_add_number - 32); |
bb35fb24 NC |
11282 | imm_expr.X_op = O_absent; |
11283 | s = expr_end; | |
11284 | continue; | |
11285 | ||
11286 | case 'p': | |
11287 | /* cins, cins32, exts and exts32 position field. Give error | |
11288 | if it's not in the valid range. */ | |
df58fc94 | 11289 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11290 | my_getExpression (&imm_expr, s); |
11291 | check_absolute_expr (ip, &imm_expr); | |
11292 | if ((unsigned) imm_expr.X_add_number > 31) | |
11293 | { | |
11294 | as_bad (_("Improper position (%lu)"), | |
11295 | (unsigned long) imm_expr.X_add_number); | |
11296 | imm_expr.X_add_number = 0; | |
11297 | } | |
11298 | /* Make the pos explicit to simplify +S. */ | |
11299 | lastpos = imm_expr.X_add_number + 32; | |
df58fc94 | 11300 | INSERT_OPERAND (0, CINSPOS, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11301 | imm_expr.X_op = O_absent; |
11302 | s = expr_end; | |
11303 | continue; | |
11304 | ||
11305 | case 'P': | |
11306 | /* cins, cins32, exts and exts32 position field. Move to | |
11307 | the next candidate if it's not in the valid range. */ | |
df58fc94 | 11308 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11309 | my_getExpression (&imm_expr, s); |
11310 | check_absolute_expr (ip, &imm_expr); | |
11311 | if ((unsigned) imm_expr.X_add_number < 32 | |
11312 | || (unsigned) imm_expr.X_add_number > 63) | |
11313 | break; | |
11314 | lastpos = imm_expr.X_add_number; | |
df58fc94 | 11315 | INSERT_OPERAND (0, CINSPOS, *ip, imm_expr.X_add_number - 32); |
bb35fb24 NC |
11316 | imm_expr.X_op = O_absent; |
11317 | s = expr_end; | |
11318 | continue; | |
11319 | ||
11320 | case 's': | |
11321 | /* cins and exts length-minus-one field. */ | |
df58fc94 | 11322 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11323 | my_getExpression (&imm_expr, s); |
11324 | check_absolute_expr (ip, &imm_expr); | |
11325 | if ((unsigned long) imm_expr.X_add_number > 31) | |
11326 | { | |
11327 | as_bad (_("Improper size (%lu)"), | |
11328 | (unsigned long) imm_expr.X_add_number); | |
11329 | imm_expr.X_add_number = 0; | |
11330 | } | |
df58fc94 | 11331 | INSERT_OPERAND (0, CINSLM1, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11332 | imm_expr.X_op = O_absent; |
11333 | s = expr_end; | |
11334 | continue; | |
11335 | ||
11336 | case 'S': | |
11337 | /* cins32/exts32 and cins/exts aliasing cint32/exts32 | |
11338 | length-minus-one field. */ | |
df58fc94 | 11339 | gas_assert (!mips_opts.micromips); |
bb35fb24 NC |
11340 | my_getExpression (&imm_expr, s); |
11341 | check_absolute_expr (ip, &imm_expr); | |
11342 | if ((long) imm_expr.X_add_number < 0 | |
11343 | || (unsigned long) imm_expr.X_add_number + lastpos > 63) | |
11344 | { | |
11345 | as_bad (_("Improper size (%lu)"), | |
11346 | (unsigned long) imm_expr.X_add_number); | |
11347 | imm_expr.X_add_number = 0; | |
11348 | } | |
df58fc94 | 11349 | INSERT_OPERAND (0, CINSLM1, *ip, imm_expr.X_add_number); |
bb35fb24 NC |
11350 | imm_expr.X_op = O_absent; |
11351 | s = expr_end; | |
11352 | continue; | |
11353 | ||
dd3cbb7e NC |
11354 | case 'Q': |
11355 | /* seqi/snei immediate field. */ | |
df58fc94 | 11356 | gas_assert (!mips_opts.micromips); |
dd3cbb7e NC |
11357 | my_getExpression (&imm_expr, s); |
11358 | check_absolute_expr (ip, &imm_expr); | |
11359 | if ((long) imm_expr.X_add_number < -512 | |
11360 | || (long) imm_expr.X_add_number >= 512) | |
11361 | { | |
11362 | as_bad (_("Improper immediate (%ld)"), | |
11363 | (long) imm_expr.X_add_number); | |
11364 | imm_expr.X_add_number = 0; | |
11365 | } | |
df58fc94 | 11366 | INSERT_OPERAND (0, SEQI, *ip, imm_expr.X_add_number); |
dd3cbb7e NC |
11367 | imm_expr.X_op = O_absent; |
11368 | s = expr_end; | |
11369 | continue; | |
11370 | ||
98675402 | 11371 | case 'a': /* 8-bit signed offset in bit 6 */ |
df58fc94 | 11372 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11373 | my_getExpression (&imm_expr, s); |
11374 | check_absolute_expr (ip, &imm_expr); | |
11375 | min_range = -((OP_MASK_OFFSET_A + 1) >> 1); | |
11376 | max_range = ((OP_MASK_OFFSET_A + 1) >> 1) - 1; | |
11377 | if (imm_expr.X_add_number < min_range | |
11378 | || imm_expr.X_add_number > max_range) | |
11379 | { | |
c95354ed | 11380 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11381 | (long) min_range, (long) max_range, |
11382 | (long) imm_expr.X_add_number); | |
11383 | } | |
df58fc94 | 11384 | INSERT_OPERAND (0, OFFSET_A, *ip, imm_expr.X_add_number); |
98675402 RS |
11385 | imm_expr.X_op = O_absent; |
11386 | s = expr_end; | |
11387 | continue; | |
11388 | ||
11389 | case 'b': /* 8-bit signed offset in bit 3 */ | |
df58fc94 | 11390 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11391 | my_getExpression (&imm_expr, s); |
11392 | check_absolute_expr (ip, &imm_expr); | |
11393 | min_range = -((OP_MASK_OFFSET_B + 1) >> 1); | |
11394 | max_range = ((OP_MASK_OFFSET_B + 1) >> 1) - 1; | |
11395 | if (imm_expr.X_add_number < min_range | |
11396 | || imm_expr.X_add_number > max_range) | |
11397 | { | |
c95354ed | 11398 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11399 | (long) min_range, (long) max_range, |
11400 | (long) imm_expr.X_add_number); | |
11401 | } | |
df58fc94 | 11402 | INSERT_OPERAND (0, OFFSET_B, *ip, imm_expr.X_add_number); |
98675402 RS |
11403 | imm_expr.X_op = O_absent; |
11404 | s = expr_end; | |
11405 | continue; | |
11406 | ||
11407 | case 'c': /* 9-bit signed offset in bit 6 */ | |
df58fc94 | 11408 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11409 | my_getExpression (&imm_expr, s); |
11410 | check_absolute_expr (ip, &imm_expr); | |
11411 | min_range = -((OP_MASK_OFFSET_C + 1) >> 1); | |
11412 | max_range = ((OP_MASK_OFFSET_C + 1) >> 1) - 1; | |
c95354ed MX |
11413 | /* We check the offset range before adjusted. */ |
11414 | min_range <<= 4; | |
11415 | max_range <<= 4; | |
98675402 RS |
11416 | if (imm_expr.X_add_number < min_range |
11417 | || imm_expr.X_add_number > max_range) | |
11418 | { | |
c95354ed | 11419 | as_bad (_("Offset not in range %ld..%ld (%ld)"), |
98675402 RS |
11420 | (long) min_range, (long) max_range, |
11421 | (long) imm_expr.X_add_number); | |
11422 | } | |
c95354ed MX |
11423 | if (imm_expr.X_add_number & 0xf) |
11424 | { | |
11425 | as_bad (_("Offset not 16 bytes alignment (%ld)"), | |
11426 | (long) imm_expr.X_add_number); | |
11427 | } | |
11428 | /* Right shift 4 bits to adjust the offset operand. */ | |
df58fc94 RS |
11429 | INSERT_OPERAND (0, OFFSET_C, *ip, |
11430 | imm_expr.X_add_number >> 4); | |
98675402 RS |
11431 | imm_expr.X_op = O_absent; |
11432 | s = expr_end; | |
11433 | continue; | |
11434 | ||
11435 | case 'z': | |
df58fc94 | 11436 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11437 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) |
11438 | break; | |
11439 | if (regno == AT && mips_opts.at) | |
11440 | { | |
11441 | if (mips_opts.at == ATREG) | |
11442 | as_warn (_("used $at without \".set noat\"")); | |
11443 | else | |
11444 | as_warn (_("used $%u with \".set at=$%u\""), | |
11445 | regno, mips_opts.at); | |
11446 | } | |
df58fc94 | 11447 | INSERT_OPERAND (0, RZ, *ip, regno); |
98675402 RS |
11448 | continue; |
11449 | ||
11450 | case 'Z': | |
df58fc94 | 11451 | gas_assert (!mips_opts.micromips); |
98675402 RS |
11452 | if (!reg_lookup (&s, RTYPE_FPU, ®no)) |
11453 | break; | |
df58fc94 | 11454 | INSERT_OPERAND (0, FZ, *ip, regno); |
98675402 RS |
11455 | continue; |
11456 | ||
af7ee8bf | 11457 | default: |
df58fc94 | 11458 | as_bad (_("Internal error: bad %s opcode " |
90ecf173 | 11459 | "(unknown extension operand type `+%c'): %s %s"), |
df58fc94 | 11460 | mips_opts.micromips ? "microMIPS" : "MIPS", |
90ecf173 | 11461 | *args, insn->name, insn->args); |
af7ee8bf CD |
11462 | /* Further processing is fruitless. */ |
11463 | return; | |
11464 | } | |
11465 | break; | |
11466 | ||
df58fc94 | 11467 | case '.': /* 10-bit offset. */ |
df58fc94 | 11468 | gas_assert (mips_opts.micromips); |
dec0624d | 11469 | case '~': /* 12-bit offset. */ |
df58fc94 RS |
11470 | { |
11471 | int shift = *args == '.' ? 9 : 11; | |
11472 | size_t i; | |
11473 | ||
11474 | /* Check whether there is only a single bracketed expression | |
11475 | left. If so, it must be the base register and the | |
11476 | constant must be zero. */ | |
11477 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
11478 | continue; | |
11479 | ||
11480 | /* If this value won't fit into the offset, then go find | |
11481 | a macro that will generate a 16- or 32-bit offset code | |
11482 | pattern. */ | |
11483 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); | |
11484 | if ((i == 0 && (imm_expr.X_op != O_constant | |
11485 | || imm_expr.X_add_number >= 1 << shift | |
11486 | || imm_expr.X_add_number < -1 << shift)) | |
11487 | || i > 0) | |
11488 | { | |
11489 | imm_expr.X_op = O_absent; | |
11490 | break; | |
11491 | } | |
11492 | if (shift == 9) | |
11493 | INSERT_OPERAND (1, OFFSET10, *ip, imm_expr.X_add_number); | |
11494 | else | |
dec0624d MR |
11495 | INSERT_OPERAND (mips_opts.micromips, |
11496 | OFFSET12, *ip, imm_expr.X_add_number); | |
df58fc94 RS |
11497 | imm_expr.X_op = O_absent; |
11498 | s = expr_end; | |
11499 | } | |
11500 | continue; | |
11501 | ||
252b5132 RH |
11502 | case '<': /* must be at least one digit */ |
11503 | /* | |
11504 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
11505 | * than 31 or less than 0, then the shift amount should be |
11506 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
11507 | * We issue a warning and mask out all but the low 5 bits. |
11508 | */ | |
11509 | my_getExpression (&imm_expr, s); | |
11510 | check_absolute_expr (ip, &imm_expr); | |
11511 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
11512 | as_warn (_("Improper shift amount (%lu)"), |
11513 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 RS |
11514 | INSERT_OPERAND (mips_opts.micromips, |
11515 | SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
11516 | imm_expr.X_op = O_absent; |
11517 | s = expr_end; | |
11518 | continue; | |
11519 | ||
11520 | case '>': /* shift amount minus 32 */ | |
11521 | my_getExpression (&imm_expr, s); | |
11522 | check_absolute_expr (ip, &imm_expr); | |
11523 | if ((unsigned long) imm_expr.X_add_number < 32 | |
11524 | || (unsigned long) imm_expr.X_add_number > 63) | |
11525 | break; | |
df58fc94 RS |
11526 | INSERT_OPERAND (mips_opts.micromips, |
11527 | SHAMT, *ip, imm_expr.X_add_number - 32); | |
252b5132 RH |
11528 | imm_expr.X_op = O_absent; |
11529 | s = expr_end; | |
11530 | continue; | |
11531 | ||
90ecf173 MR |
11532 | case 'k': /* CACHE code. */ |
11533 | case 'h': /* PREFX code. */ | |
11534 | case '1': /* SYNC type. */ | |
252b5132 RH |
11535 | my_getExpression (&imm_expr, s); |
11536 | check_absolute_expr (ip, &imm_expr); | |
11537 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
11538 | as_warn (_("Invalid value for `%s' (%lu)"), |
11539 | ip->insn_mo->name, | |
11540 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11541 | switch (*args) |
d954098f | 11542 | { |
df58fc94 RS |
11543 | case 'k': |
11544 | if (mips_fix_cn63xxp1 | |
11545 | && !mips_opts.micromips | |
11546 | && strcmp ("pref", insn->name) == 0) | |
d954098f DD |
11547 | switch (imm_expr.X_add_number) |
11548 | { | |
11549 | case 5: | |
11550 | case 25: | |
11551 | case 26: | |
11552 | case 27: | |
11553 | case 28: | |
11554 | case 29: | |
11555 | case 30: | |
11556 | case 31: /* These are ok. */ | |
11557 | break; | |
11558 | ||
11559 | default: /* The rest must be changed to 28. */ | |
11560 | imm_expr.X_add_number = 28; | |
11561 | break; | |
11562 | } | |
df58fc94 RS |
11563 | INSERT_OPERAND (mips_opts.micromips, |
11564 | CACHE, *ip, imm_expr.X_add_number); | |
11565 | break; | |
11566 | case 'h': | |
11567 | INSERT_OPERAND (mips_opts.micromips, | |
11568 | PREFX, *ip, imm_expr.X_add_number); | |
11569 | break; | |
11570 | case '1': | |
11571 | INSERT_OPERAND (mips_opts.micromips, | |
11572 | STYPE, *ip, imm_expr.X_add_number); | |
11573 | break; | |
d954098f | 11574 | } |
252b5132 RH |
11575 | imm_expr.X_op = O_absent; |
11576 | s = expr_end; | |
11577 | continue; | |
11578 | ||
90ecf173 | 11579 | case 'c': /* BREAK code. */ |
df58fc94 RS |
11580 | { |
11581 | unsigned long mask = (mips_opts.micromips | |
11582 | ? MICROMIPSOP_MASK_CODE | |
11583 | : OP_MASK_CODE); | |
11584 | ||
11585 | my_getExpression (&imm_expr, s); | |
11586 | check_absolute_expr (ip, &imm_expr); | |
11587 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11588 | as_warn (_("Code for %s not in range 0..%lu (%lu)"), | |
11589 | ip->insn_mo->name, | |
11590 | mask, (unsigned long) imm_expr.X_add_number); | |
11591 | INSERT_OPERAND (mips_opts.micromips, | |
11592 | CODE, *ip, imm_expr.X_add_number); | |
11593 | imm_expr.X_op = O_absent; | |
11594 | s = expr_end; | |
11595 | } | |
252b5132 RH |
11596 | continue; |
11597 | ||
90ecf173 | 11598 | case 'q': /* Lower BREAK code. */ |
df58fc94 RS |
11599 | { |
11600 | unsigned long mask = (mips_opts.micromips | |
11601 | ? MICROMIPSOP_MASK_CODE2 | |
11602 | : OP_MASK_CODE2); | |
11603 | ||
11604 | my_getExpression (&imm_expr, s); | |
11605 | check_absolute_expr (ip, &imm_expr); | |
11606 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11607 | as_warn (_("Lower code for %s not in range 0..%lu (%lu)"), | |
11608 | ip->insn_mo->name, | |
11609 | mask, (unsigned long) imm_expr.X_add_number); | |
11610 | INSERT_OPERAND (mips_opts.micromips, | |
11611 | CODE2, *ip, imm_expr.X_add_number); | |
11612 | imm_expr.X_op = O_absent; | |
11613 | s = expr_end; | |
11614 | } | |
252b5132 RH |
11615 | continue; |
11616 | ||
df58fc94 RS |
11617 | case 'B': /* 20- or 10-bit syscall/break/wait code. */ |
11618 | { | |
11619 | unsigned long mask = (mips_opts.micromips | |
11620 | ? MICROMIPSOP_MASK_CODE10 | |
11621 | : OP_MASK_CODE20); | |
11622 | ||
11623 | my_getExpression (&imm_expr, s); | |
11624 | check_absolute_expr (ip, &imm_expr); | |
11625 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11626 | as_warn (_("Code for %s not in range 0..%lu (%lu)"), | |
11627 | ip->insn_mo->name, | |
11628 | mask, (unsigned long) imm_expr.X_add_number); | |
11629 | if (mips_opts.micromips) | |
11630 | INSERT_OPERAND (1, CODE10, *ip, imm_expr.X_add_number); | |
11631 | else | |
11632 | INSERT_OPERAND (0, CODE20, *ip, imm_expr.X_add_number); | |
11633 | imm_expr.X_op = O_absent; | |
11634 | s = expr_end; | |
11635 | } | |
252b5132 RH |
11636 | continue; |
11637 | ||
df58fc94 RS |
11638 | case 'C': /* 25- or 23-bit coprocessor code. */ |
11639 | { | |
11640 | unsigned long mask = (mips_opts.micromips | |
11641 | ? MICROMIPSOP_MASK_COPZ | |
11642 | : OP_MASK_COPZ); | |
11643 | ||
11644 | my_getExpression (&imm_expr, s); | |
11645 | check_absolute_expr (ip, &imm_expr); | |
11646 | if ((unsigned long) imm_expr.X_add_number > mask) | |
11647 | as_warn (_("Coproccesor code > %u bits (%lu)"), | |
11648 | mips_opts.micromips ? 23U : 25U, | |
793b27f4 | 11649 | (unsigned long) imm_expr.X_add_number); |
df58fc94 RS |
11650 | INSERT_OPERAND (mips_opts.micromips, |
11651 | COPZ, *ip, imm_expr.X_add_number); | |
11652 | imm_expr.X_op = O_absent; | |
11653 | s = expr_end; | |
11654 | } | |
beae10d5 | 11655 | continue; |
252b5132 | 11656 | |
df58fc94 RS |
11657 | case 'J': /* 19-bit WAIT code. */ |
11658 | gas_assert (!mips_opts.micromips); | |
4372b673 NC |
11659 | my_getExpression (&imm_expr, s); |
11660 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 11661 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
df58fc94 RS |
11662 | { |
11663 | as_warn (_("Illegal 19-bit code (%lu)"), | |
a9e24354 | 11664 | (unsigned long) imm_expr.X_add_number); |
df58fc94 RS |
11665 | imm_expr.X_add_number &= OP_MASK_CODE19; |
11666 | } | |
11667 | INSERT_OPERAND (0, CODE19, *ip, imm_expr.X_add_number); | |
4372b673 NC |
11668 | imm_expr.X_op = O_absent; |
11669 | s = expr_end; | |
11670 | continue; | |
11671 | ||
707bfff6 | 11672 | case 'P': /* Performance register. */ |
df58fc94 | 11673 | gas_assert (!mips_opts.micromips); |
beae10d5 | 11674 | my_getExpression (&imm_expr, s); |
252b5132 | 11675 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 11676 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
bf12938e RS |
11677 | as_warn (_("Invalid performance register (%lu)"), |
11678 | (unsigned long) imm_expr.X_add_number); | |
df58fc94 | 11679 | INSERT_OPERAND (0, PERFREG, *ip, imm_expr.X_add_number); |
beae10d5 KH |
11680 | imm_expr.X_op = O_absent; |
11681 | s = expr_end; | |
11682 | continue; | |
252b5132 | 11683 | |
707bfff6 | 11684 | case 'G': /* Coprocessor destination register. */ |
df58fc94 RS |
11685 | { |
11686 | unsigned long opcode = ip->insn_opcode; | |
11687 | unsigned long mask; | |
11688 | unsigned int types; | |
11689 | int cop0; | |
11690 | ||
11691 | if (mips_opts.micromips) | |
11692 | { | |
11693 | mask = ~((MICROMIPSOP_MASK_RT << MICROMIPSOP_SH_RT) | |
11694 | | (MICROMIPSOP_MASK_RS << MICROMIPSOP_SH_RS) | |
11695 | | (MICROMIPSOP_MASK_SEL << MICROMIPSOP_SH_SEL)); | |
11696 | opcode &= mask; | |
11697 | switch (opcode) | |
11698 | { | |
11699 | case 0x000000fc: /* mfc0 */ | |
11700 | case 0x000002fc: /* mtc0 */ | |
11701 | case 0x580000fc: /* dmfc0 */ | |
11702 | case 0x580002fc: /* dmtc0 */ | |
11703 | cop0 = 1; | |
11704 | break; | |
11705 | default: | |
11706 | cop0 = 0; | |
11707 | break; | |
11708 | } | |
11709 | } | |
11710 | else | |
11711 | { | |
11712 | opcode = (opcode >> OP_SH_OP) & OP_MASK_OP; | |
11713 | cop0 = opcode == OP_OP_COP0; | |
11714 | } | |
11715 | types = RTYPE_NUM | (cop0 ? RTYPE_CP0 : RTYPE_GP); | |
11716 | ok = reg_lookup (&s, types, ®no); | |
11717 | if (mips_opts.micromips) | |
11718 | INSERT_OPERAND (1, RS, *ip, regno); | |
11719 | else | |
11720 | INSERT_OPERAND (0, RD, *ip, regno); | |
11721 | if (ok) | |
11722 | { | |
11723 | lastregno = regno; | |
11724 | continue; | |
11725 | } | |
11726 | } | |
11727 | break; | |
707bfff6 | 11728 | |
df58fc94 RS |
11729 | case 'y': /* ALNV.PS source register. */ |
11730 | gas_assert (mips_opts.micromips); | |
11731 | goto do_reg; | |
11732 | case 'x': /* Ignore register name. */ | |
11733 | case 'U': /* Destination register (CLO/CLZ). */ | |
11734 | case 'g': /* Coprocessor destination register. */ | |
11735 | gas_assert (!mips_opts.micromips); | |
90ecf173 MR |
11736 | case 'b': /* Base register. */ |
11737 | case 'd': /* Destination register. */ | |
11738 | case 's': /* Source register. */ | |
11739 | case 't': /* Target register. */ | |
11740 | case 'r': /* Both target and source. */ | |
11741 | case 'v': /* Both dest and source. */ | |
11742 | case 'w': /* Both dest and target. */ | |
11743 | case 'E': /* Coprocessor target register. */ | |
11744 | case 'K': /* RDHWR destination register. */ | |
90ecf173 | 11745 | case 'z': /* Must be zero register. */ |
df58fc94 | 11746 | do_reg: |
90ecf173 | 11747 | s_reset = s; |
707bfff6 TS |
11748 | if (*args == 'E' || *args == 'K') |
11749 | ok = reg_lookup (&s, RTYPE_NUM, ®no); | |
11750 | else | |
11751 | { | |
11752 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
741fe287 MR |
11753 | if (regno == AT && mips_opts.at) |
11754 | { | |
11755 | if (mips_opts.at == ATREG) | |
f71d0d44 | 11756 | as_warn (_("Used $at without \".set noat\"")); |
741fe287 | 11757 | else |
f71d0d44 | 11758 | as_warn (_("Used $%u with \".set at=$%u\""), |
741fe287 MR |
11759 | regno, mips_opts.at); |
11760 | } | |
707bfff6 TS |
11761 | } |
11762 | if (ok) | |
252b5132 | 11763 | { |
252b5132 RH |
11764 | c = *args; |
11765 | if (*s == ' ') | |
f9419b05 | 11766 | ++s; |
252b5132 RH |
11767 | if (args[1] != *s) |
11768 | { | |
11769 | if (c == 'r' || c == 'v' || c == 'w') | |
11770 | { | |
11771 | regno = lastregno; | |
11772 | s = s_reset; | |
f9419b05 | 11773 | ++args; |
252b5132 RH |
11774 | } |
11775 | } | |
11776 | /* 'z' only matches $0. */ | |
11777 | if (c == 'z' && regno != 0) | |
11778 | break; | |
11779 | ||
24864476 | 11780 | if (c == 's' && !strncmp (ip->insn_mo->name, "jalr", 4)) |
e7c604dd CM |
11781 | { |
11782 | if (regno == lastregno) | |
90ecf173 MR |
11783 | { |
11784 | insn_error | |
f71d0d44 | 11785 | = _("Source and destination must be different"); |
e7c604dd | 11786 | continue; |
90ecf173 | 11787 | } |
24864476 | 11788 | if (regno == 31 && lastregno == 0xffffffff) |
90ecf173 MR |
11789 | { |
11790 | insn_error | |
f71d0d44 | 11791 | = _("A destination register must be supplied"); |
e7c604dd | 11792 | continue; |
90ecf173 | 11793 | } |
e7c604dd | 11794 | } |
90ecf173 MR |
11795 | /* Now that we have assembled one operand, we use the args |
11796 | string to figure out where it goes in the instruction. */ | |
252b5132 RH |
11797 | switch (c) |
11798 | { | |
11799 | case 'r': | |
11800 | case 's': | |
11801 | case 'v': | |
11802 | case 'b': | |
df58fc94 | 11803 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, regno); |
252b5132 | 11804 | break; |
df58fc94 | 11805 | |
af7ee8bf | 11806 | case 'K': |
df58fc94 RS |
11807 | if (mips_opts.micromips) |
11808 | INSERT_OPERAND (1, RS, *ip, regno); | |
11809 | else | |
11810 | INSERT_OPERAND (0, RD, *ip, regno); | |
11811 | break; | |
11812 | ||
11813 | case 'd': | |
ef2e4d86 | 11814 | case 'g': |
df58fc94 | 11815 | INSERT_OPERAND (mips_opts.micromips, RD, *ip, regno); |
252b5132 | 11816 | break; |
df58fc94 | 11817 | |
4372b673 | 11818 | case 'U': |
df58fc94 RS |
11819 | gas_assert (!mips_opts.micromips); |
11820 | INSERT_OPERAND (0, RD, *ip, regno); | |
11821 | INSERT_OPERAND (0, RT, *ip, regno); | |
4372b673 | 11822 | break; |
df58fc94 | 11823 | |
252b5132 RH |
11824 | case 'w': |
11825 | case 't': | |
11826 | case 'E': | |
df58fc94 RS |
11827 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, regno); |
11828 | break; | |
11829 | ||
11830 | case 'y': | |
11831 | gas_assert (mips_opts.micromips); | |
11832 | INSERT_OPERAND (1, RS3, *ip, regno); | |
252b5132 | 11833 | break; |
df58fc94 | 11834 | |
252b5132 RH |
11835 | case 'x': |
11836 | /* This case exists because on the r3000 trunc | |
11837 | expands into a macro which requires a gp | |
11838 | register. On the r6000 or r4000 it is | |
11839 | assembled into a single instruction which | |
11840 | ignores the register. Thus the insn version | |
11841 | is MIPS_ISA2 and uses 'x', and the macro | |
11842 | version is MIPS_ISA1 and uses 't'. */ | |
11843 | break; | |
df58fc94 | 11844 | |
252b5132 RH |
11845 | case 'z': |
11846 | /* This case is for the div instruction, which | |
11847 | acts differently if the destination argument | |
11848 | is $0. This only matches $0, and is checked | |
11849 | outside the switch. */ | |
11850 | break; | |
252b5132 RH |
11851 | } |
11852 | lastregno = regno; | |
11853 | continue; | |
11854 | } | |
252b5132 RH |
11855 | switch (*args++) |
11856 | { | |
11857 | case 'r': | |
11858 | case 'v': | |
df58fc94 | 11859 | INSERT_OPERAND (mips_opts.micromips, RS, *ip, lastregno); |
252b5132 | 11860 | continue; |
df58fc94 | 11861 | |
252b5132 | 11862 | case 'w': |
df58fc94 | 11863 | INSERT_OPERAND (mips_opts.micromips, RT, *ip, lastregno); |
252b5132 RH |
11864 | continue; |
11865 | } | |
11866 | break; | |
11867 | ||
deec1734 | 11868 | case 'O': /* MDMX alignment immediate constant. */ |
df58fc94 | 11869 | gas_assert (!mips_opts.micromips); |
deec1734 CD |
11870 | my_getExpression (&imm_expr, s); |
11871 | check_absolute_expr (ip, &imm_expr); | |
11872 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
20203fb9 | 11873 | as_warn (_("Improper align amount (%ld), using low bits"), |
bf12938e | 11874 | (long) imm_expr.X_add_number); |
df58fc94 | 11875 | INSERT_OPERAND (0, ALN, *ip, imm_expr.X_add_number); |
deec1734 CD |
11876 | imm_expr.X_op = O_absent; |
11877 | s = expr_end; | |
11878 | continue; | |
11879 | ||
11880 | case 'Q': /* MDMX vector, element sel, or const. */ | |
11881 | if (s[0] != '$') | |
11882 | { | |
11883 | /* MDMX Immediate. */ | |
df58fc94 | 11884 | gas_assert (!mips_opts.micromips); |
deec1734 CD |
11885 | my_getExpression (&imm_expr, s); |
11886 | check_absolute_expr (ip, &imm_expr); | |
11887 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
bf12938e RS |
11888 | as_warn (_("Invalid MDMX Immediate (%ld)"), |
11889 | (long) imm_expr.X_add_number); | |
df58fc94 | 11890 | INSERT_OPERAND (0, FT, *ip, imm_expr.X_add_number); |
deec1734 CD |
11891 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) |
11892 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
11893 | else | |
11894 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
deec1734 CD |
11895 | imm_expr.X_op = O_absent; |
11896 | s = expr_end; | |
11897 | continue; | |
11898 | } | |
11899 | /* Not MDMX Immediate. Fall through. */ | |
11900 | case 'X': /* MDMX destination register. */ | |
11901 | case 'Y': /* MDMX source register. */ | |
11902 | case 'Z': /* MDMX target register. */ | |
11903 | is_mdmx = 1; | |
df58fc94 RS |
11904 | case 'W': |
11905 | gas_assert (!mips_opts.micromips); | |
90ecf173 MR |
11906 | case 'D': /* Floating point destination register. */ |
11907 | case 'S': /* Floating point source register. */ | |
11908 | case 'T': /* Floating point target register. */ | |
11909 | case 'R': /* Floating point source register. */ | |
252b5132 | 11910 | case 'V': |
707bfff6 TS |
11911 | rtype = RTYPE_FPU; |
11912 | if (is_mdmx | |
11913 | || (mips_opts.ase_mdmx | |
11914 | && (ip->insn_mo->pinfo & FP_D) | |
11915 | && (ip->insn_mo->pinfo & (INSN_COPROC_MOVE_DELAY | |
11916 | | INSN_COPROC_MEMORY_DELAY | |
11917 | | INSN_LOAD_COPROC_DELAY | |
11918 | | INSN_LOAD_MEMORY_DELAY | |
11919 | | INSN_STORE_MEMORY)))) | |
11920 | rtype |= RTYPE_VEC; | |
252b5132 | 11921 | s_reset = s; |
707bfff6 | 11922 | if (reg_lookup (&s, rtype, ®no)) |
252b5132 | 11923 | { |
252b5132 | 11924 | if ((regno & 1) != 0 |
ca4e0257 | 11925 | && HAVE_32BIT_FPRS |
90ecf173 | 11926 | && !mips_oddfpreg_ok (ip->insn_mo, argnum)) |
252b5132 RH |
11927 | as_warn (_("Float register should be even, was %d"), |
11928 | regno); | |
11929 | ||
11930 | c = *args; | |
11931 | if (*s == ' ') | |
f9419b05 | 11932 | ++s; |
252b5132 RH |
11933 | if (args[1] != *s) |
11934 | { | |
11935 | if (c == 'V' || c == 'W') | |
11936 | { | |
11937 | regno = lastregno; | |
11938 | s = s_reset; | |
f9419b05 | 11939 | ++args; |
252b5132 RH |
11940 | } |
11941 | } | |
11942 | switch (c) | |
11943 | { | |
11944 | case 'D': | |
deec1734 | 11945 | case 'X': |
df58fc94 | 11946 | INSERT_OPERAND (mips_opts.micromips, FD, *ip, regno); |
252b5132 | 11947 | break; |
df58fc94 | 11948 | |
252b5132 RH |
11949 | case 'V': |
11950 | case 'S': | |
deec1734 | 11951 | case 'Y': |
df58fc94 | 11952 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, regno); |
252b5132 | 11953 | break; |
df58fc94 | 11954 | |
deec1734 CD |
11955 | case 'Q': |
11956 | /* This is like 'Z', but also needs to fix the MDMX | |
11957 | vector/scalar select bits. Note that the | |
11958 | scalar immediate case is handled above. */ | |
11959 | if (*s == '[') | |
11960 | { | |
11961 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
11962 | int max_el = (is_qh ? 3 : 7); | |
11963 | s++; | |
11964 | my_getExpression(&imm_expr, s); | |
11965 | check_absolute_expr (ip, &imm_expr); | |
11966 | s = expr_end; | |
11967 | if (imm_expr.X_add_number > max_el) | |
20203fb9 NC |
11968 | as_bad (_("Bad element selector %ld"), |
11969 | (long) imm_expr.X_add_number); | |
deec1734 CD |
11970 | imm_expr.X_add_number &= max_el; |
11971 | ip->insn_opcode |= (imm_expr.X_add_number | |
11972 | << (OP_SH_VSEL + | |
11973 | (is_qh ? 2 : 1))); | |
01a3f561 | 11974 | imm_expr.X_op = O_absent; |
deec1734 | 11975 | if (*s != ']') |
20203fb9 | 11976 | as_warn (_("Expecting ']' found '%s'"), s); |
deec1734 CD |
11977 | else |
11978 | s++; | |
11979 | } | |
11980 | else | |
11981 | { | |
11982 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
11983 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
11984 | << OP_SH_VSEL); | |
11985 | else | |
11986 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
11987 | OP_SH_VSEL); | |
11988 | } | |
90ecf173 | 11989 | /* Fall through. */ |
252b5132 RH |
11990 | case 'W': |
11991 | case 'T': | |
deec1734 | 11992 | case 'Z': |
df58fc94 | 11993 | INSERT_OPERAND (mips_opts.micromips, FT, *ip, regno); |
252b5132 | 11994 | break; |
df58fc94 | 11995 | |
252b5132 | 11996 | case 'R': |
df58fc94 | 11997 | INSERT_OPERAND (mips_opts.micromips, FR, *ip, regno); |
252b5132 RH |
11998 | break; |
11999 | } | |
12000 | lastregno = regno; | |
12001 | continue; | |
12002 | } | |
12003 | ||
252b5132 RH |
12004 | switch (*args++) |
12005 | { | |
12006 | case 'V': | |
df58fc94 | 12007 | INSERT_OPERAND (mips_opts.micromips, FS, *ip, lastregno); |
252b5132 | 12008 | continue; |
df58fc94 | 12009 | |
252b5132 | 12010 | case 'W': |
df58fc94 | 12011 | INSERT_OPERAND (mips_opts.micromips, FT, *ip, lastregno); |
252b5132 RH |
12012 | continue; |
12013 | } | |
12014 | break; | |
12015 | ||
12016 | case 'I': | |
12017 | my_getExpression (&imm_expr, s); | |
12018 | if (imm_expr.X_op != O_big | |
12019 | && imm_expr.X_op != O_constant) | |
12020 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
12021 | if (HAVE_32BIT_GPRS) |
12022 | normalize_constant_expr (&imm_expr); | |
252b5132 RH |
12023 | s = expr_end; |
12024 | continue; | |
12025 | ||
12026 | case 'A': | |
12027 | my_getExpression (&offset_expr, s); | |
2051e8c4 | 12028 | normalize_address_expr (&offset_expr); |
f6688943 | 12029 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
12030 | s = expr_end; |
12031 | continue; | |
12032 | ||
12033 | case 'F': | |
12034 | case 'L': | |
12035 | case 'f': | |
12036 | case 'l': | |
12037 | { | |
12038 | int f64; | |
ca4e0257 | 12039 | int using_gprs; |
252b5132 RH |
12040 | char *save_in; |
12041 | char *err; | |
12042 | unsigned char temp[8]; | |
12043 | int len; | |
12044 | unsigned int length; | |
12045 | segT seg; | |
12046 | subsegT subseg; | |
12047 | char *p; | |
12048 | ||
12049 | /* These only appear as the last operand in an | |
12050 | instruction, and every instruction that accepts | |
12051 | them in any variant accepts them in all variants. | |
12052 | This means we don't have to worry about backing out | |
12053 | any changes if the instruction does not match. | |
12054 | ||
12055 | The difference between them is the size of the | |
12056 | floating point constant and where it goes. For 'F' | |
12057 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
12058 | is 32 bits. Where the constant is placed is based | |
12059 | on how the MIPS assembler does things: | |
12060 | F -- .rdata | |
12061 | L -- .lit8 | |
12062 | f -- immediate value | |
12063 | l -- .lit4 | |
12064 | ||
12065 | The .lit4 and .lit8 sections are only used if | |
12066 | permitted by the -G argument. | |
12067 | ||
ca4e0257 RS |
12068 | The code below needs to know whether the target register |
12069 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
12070 | 'F' are used with GPR-based instructions and 'l' and | |
12071 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
12072 | |
12073 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 12074 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
12075 | |
12076 | save_in = input_line_pointer; | |
12077 | input_line_pointer = s; | |
12078 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
12079 | length = len; | |
12080 | s = input_line_pointer; | |
12081 | input_line_pointer = save_in; | |
12082 | if (err != NULL && *err != '\0') | |
12083 | { | |
12084 | as_bad (_("Bad floating point constant: %s"), err); | |
12085 | memset (temp, '\0', sizeof temp); | |
12086 | length = f64 ? 8 : 4; | |
12087 | } | |
12088 | ||
9c2799c2 | 12089 | gas_assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
12090 | |
12091 | if (*args == 'f' | |
12092 | || (*args == 'l' | |
3e722fb5 | 12093 | && (g_switch_value < 4 |
252b5132 RH |
12094 | || (temp[0] == 0 && temp[1] == 0) |
12095 | || (temp[2] == 0 && temp[3] == 0)))) | |
12096 | { | |
12097 | imm_expr.X_op = O_constant; | |
90ecf173 | 12098 | if (!target_big_endian) |
252b5132 RH |
12099 | imm_expr.X_add_number = bfd_getl32 (temp); |
12100 | else | |
12101 | imm_expr.X_add_number = bfd_getb32 (temp); | |
12102 | } | |
12103 | else if (length > 4 | |
90ecf173 | 12104 | && !mips_disable_float_construction |
ca4e0257 RS |
12105 | /* Constants can only be constructed in GPRs and |
12106 | copied to FPRs if the GPRs are at least as wide | |
12107 | as the FPRs. Force the constant into memory if | |
12108 | we are using 64-bit FPRs but the GPRs are only | |
12109 | 32 bits wide. */ | |
12110 | && (using_gprs | |
90ecf173 | 12111 | || !(HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) |
252b5132 RH |
12112 | && ((temp[0] == 0 && temp[1] == 0) |
12113 | || (temp[2] == 0 && temp[3] == 0)) | |
12114 | && ((temp[4] == 0 && temp[5] == 0) | |
12115 | || (temp[6] == 0 && temp[7] == 0))) | |
12116 | { | |
ca4e0257 | 12117 | /* The value is simple enough to load with a couple of |
90ecf173 MR |
12118 | instructions. If using 32-bit registers, set |
12119 | imm_expr to the high order 32 bits and offset_expr to | |
12120 | the low order 32 bits. Otherwise, set imm_expr to | |
12121 | the entire 64 bit constant. */ | |
ca4e0257 | 12122 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) |
252b5132 RH |
12123 | { |
12124 | imm_expr.X_op = O_constant; | |
12125 | offset_expr.X_op = O_constant; | |
90ecf173 | 12126 | if (!target_big_endian) |
252b5132 RH |
12127 | { |
12128 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
12129 | offset_expr.X_add_number = bfd_getl32 (temp); | |
12130 | } | |
12131 | else | |
12132 | { | |
12133 | imm_expr.X_add_number = bfd_getb32 (temp); | |
12134 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
12135 | } | |
12136 | if (offset_expr.X_add_number == 0) | |
12137 | offset_expr.X_op = O_absent; | |
12138 | } | |
12139 | else if (sizeof (imm_expr.X_add_number) > 4) | |
12140 | { | |
12141 | imm_expr.X_op = O_constant; | |
90ecf173 | 12142 | if (!target_big_endian) |
252b5132 RH |
12143 | imm_expr.X_add_number = bfd_getl64 (temp); |
12144 | else | |
12145 | imm_expr.X_add_number = bfd_getb64 (temp); | |
12146 | } | |
12147 | else | |
12148 | { | |
12149 | imm_expr.X_op = O_big; | |
12150 | imm_expr.X_add_number = 4; | |
90ecf173 | 12151 | if (!target_big_endian) |
252b5132 RH |
12152 | { |
12153 | generic_bignum[0] = bfd_getl16 (temp); | |
12154 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
12155 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
12156 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
12157 | } | |
12158 | else | |
12159 | { | |
12160 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
12161 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
12162 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
12163 | generic_bignum[3] = bfd_getb16 (temp); | |
12164 | } | |
12165 | } | |
12166 | } | |
12167 | else | |
12168 | { | |
12169 | const char *newname; | |
12170 | segT new_seg; | |
12171 | ||
12172 | /* Switch to the right section. */ | |
12173 | seg = now_seg; | |
12174 | subseg = now_subseg; | |
12175 | switch (*args) | |
12176 | { | |
12177 | default: /* unused default case avoids warnings. */ | |
12178 | case 'L': | |
12179 | newname = RDATA_SECTION_NAME; | |
3e722fb5 | 12180 | if (g_switch_value >= 8) |
252b5132 RH |
12181 | newname = ".lit8"; |
12182 | break; | |
12183 | case 'F': | |
3e722fb5 | 12184 | newname = RDATA_SECTION_NAME; |
252b5132 RH |
12185 | break; |
12186 | case 'l': | |
9c2799c2 | 12187 | gas_assert (g_switch_value >= 4); |
252b5132 RH |
12188 | newname = ".lit4"; |
12189 | break; | |
12190 | } | |
12191 | new_seg = subseg_new (newname, (subsegT) 0); | |
f43abd2b | 12192 | if (IS_ELF) |
252b5132 RH |
12193 | bfd_set_section_flags (stdoutput, new_seg, |
12194 | (SEC_ALLOC | |
12195 | | SEC_LOAD | |
12196 | | SEC_READONLY | |
12197 | | SEC_DATA)); | |
12198 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
c41e87e3 | 12199 | if (IS_ELF && strncmp (TARGET_OS, "elf", 3) != 0) |
252b5132 RH |
12200 | record_alignment (new_seg, 4); |
12201 | else | |
12202 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
12203 | if (seg == now_seg) | |
12204 | as_bad (_("Can't use floating point insn in this section")); | |
12205 | ||
df58fc94 RS |
12206 | /* Set the argument to the current address in the |
12207 | section. */ | |
12208 | offset_expr.X_op = O_symbol; | |
12209 | offset_expr.X_add_symbol = symbol_temp_new_now (); | |
12210 | offset_expr.X_add_number = 0; | |
12211 | ||
12212 | /* Put the floating point number into the section. */ | |
12213 | p = frag_more ((int) length); | |
12214 | memcpy (p, temp, length); | |
12215 | ||
12216 | /* Switch back to the original section. */ | |
12217 | subseg_set (seg, subseg); | |
12218 | } | |
12219 | } | |
12220 | continue; | |
12221 | ||
12222 | case 'i': /* 16-bit unsigned immediate. */ | |
12223 | case 'j': /* 16-bit signed immediate. */ | |
12224 | *imm_reloc = BFD_RELOC_LO16; | |
12225 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0) | |
12226 | { | |
12227 | int more; | |
12228 | offsetT minval, maxval; | |
12229 | ||
12230 | more = (insn + 1 < past | |
12231 | && strcmp (insn->name, insn[1].name) == 0); | |
12232 | ||
12233 | /* If the expression was written as an unsigned number, | |
12234 | only treat it as signed if there are no more | |
12235 | alternatives. */ | |
12236 | if (more | |
12237 | && *args == 'j' | |
12238 | && sizeof (imm_expr.X_add_number) <= 4 | |
12239 | && imm_expr.X_op == O_constant | |
12240 | && imm_expr.X_add_number < 0 | |
12241 | && imm_expr.X_unsigned | |
12242 | && HAVE_64BIT_GPRS) | |
12243 | break; | |
12244 | ||
12245 | /* For compatibility with older assemblers, we accept | |
12246 | 0x8000-0xffff as signed 16-bit numbers when only | |
12247 | signed numbers are allowed. */ | |
12248 | if (*args == 'i') | |
12249 | minval = 0, maxval = 0xffff; | |
12250 | else if (more) | |
12251 | minval = -0x8000, maxval = 0x7fff; | |
12252 | else | |
12253 | minval = -0x8000, maxval = 0xffff; | |
12254 | ||
12255 | if (imm_expr.X_op != O_constant | |
12256 | || imm_expr.X_add_number < minval | |
12257 | || imm_expr.X_add_number > maxval) | |
12258 | { | |
12259 | if (more) | |
12260 | break; | |
12261 | if (imm_expr.X_op == O_constant | |
12262 | || imm_expr.X_op == O_big) | |
12263 | as_bad (_("Expression out of range")); | |
12264 | } | |
12265 | } | |
12266 | s = expr_end; | |
12267 | continue; | |
12268 | ||
12269 | case 'o': /* 16-bit offset. */ | |
12270 | offset_reloc[0] = BFD_RELOC_LO16; | |
12271 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
12272 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
12273 | ||
12274 | /* Check whether there is only a single bracketed expression | |
12275 | left. If so, it must be the base register and the | |
12276 | constant must be zero. */ | |
12277 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12278 | { | |
12279 | offset_expr.X_op = O_constant; | |
12280 | offset_expr.X_add_number = 0; | |
12281 | continue; | |
12282 | } | |
12283 | ||
12284 | /* If this value won't fit into a 16 bit offset, then go | |
12285 | find a macro that will generate the 32 bit offset | |
12286 | code pattern. */ | |
12287 | if (my_getSmallExpression (&offset_expr, offset_reloc, s) == 0 | |
12288 | && (offset_expr.X_op != O_constant | |
12289 | || offset_expr.X_add_number >= 0x8000 | |
12290 | || offset_expr.X_add_number < -0x8000)) | |
12291 | break; | |
12292 | ||
12293 | s = expr_end; | |
12294 | continue; | |
12295 | ||
12296 | case 'p': /* PC-relative offset. */ | |
12297 | *offset_reloc = BFD_RELOC_16_PCREL_S2; | |
12298 | my_getExpression (&offset_expr, s); | |
12299 | s = expr_end; | |
12300 | continue; | |
12301 | ||
12302 | case 'u': /* Upper 16 bits. */ | |
12303 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0 | |
12304 | && imm_expr.X_op == O_constant | |
12305 | && (imm_expr.X_add_number < 0 | |
12306 | || imm_expr.X_add_number >= 0x10000)) | |
12307 | as_bad (_("lui expression (%lu) not in range 0..65535"), | |
12308 | (unsigned long) imm_expr.X_add_number); | |
12309 | s = expr_end; | |
12310 | continue; | |
12311 | ||
12312 | case 'a': /* 26-bit address. */ | |
12313 | *offset_reloc = BFD_RELOC_MIPS_JMP; | |
12314 | my_getExpression (&offset_expr, s); | |
12315 | s = expr_end; | |
12316 | continue; | |
12317 | ||
12318 | case 'N': /* 3-bit branch condition code. */ | |
12319 | case 'M': /* 3-bit compare condition code. */ | |
12320 | rtype = RTYPE_CCC; | |
12321 | if (ip->insn_mo->pinfo & (FP_D | FP_S)) | |
12322 | rtype |= RTYPE_FCC; | |
12323 | if (!reg_lookup (&s, rtype, ®no)) | |
12324 | break; | |
12325 | if ((strcmp (str + strlen (str) - 3, ".ps") == 0 | |
12326 | || strcmp (str + strlen (str) - 5, "any2f") == 0 | |
12327 | || strcmp (str + strlen (str) - 5, "any2t") == 0) | |
12328 | && (regno & 1) != 0) | |
12329 | as_warn (_("Condition code register should be even for %s, " | |
12330 | "was %d"), | |
12331 | str, regno); | |
12332 | if ((strcmp (str + strlen (str) - 5, "any4f") == 0 | |
12333 | || strcmp (str + strlen (str) - 5, "any4t") == 0) | |
12334 | && (regno & 3) != 0) | |
12335 | as_warn (_("Condition code register should be 0 or 4 for %s, " | |
12336 | "was %d"), | |
12337 | str, regno); | |
12338 | if (*args == 'N') | |
12339 | INSERT_OPERAND (mips_opts.micromips, BCC, *ip, regno); | |
12340 | else | |
12341 | INSERT_OPERAND (mips_opts.micromips, CCC, *ip, regno); | |
12342 | continue; | |
12343 | ||
12344 | case 'H': | |
12345 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
12346 | s += 2; | |
12347 | if (ISDIGIT (*s)) | |
12348 | { | |
12349 | c = 0; | |
12350 | do | |
12351 | { | |
12352 | c *= 10; | |
12353 | c += *s - '0'; | |
12354 | ++s; | |
12355 | } | |
12356 | while (ISDIGIT (*s)); | |
12357 | } | |
12358 | else | |
12359 | c = 8; /* Invalid sel value. */ | |
12360 | ||
12361 | if (c > 7) | |
12362 | as_bad (_("Invalid coprocessor sub-selection value (0-7)")); | |
12363 | INSERT_OPERAND (mips_opts.micromips, SEL, *ip, c); | |
12364 | continue; | |
12365 | ||
12366 | case 'e': | |
12367 | gas_assert (!mips_opts.micromips); | |
12368 | /* Must be at least one digit. */ | |
12369 | my_getExpression (&imm_expr, s); | |
12370 | check_absolute_expr (ip, &imm_expr); | |
12371 | ||
12372 | if ((unsigned long) imm_expr.X_add_number | |
12373 | > (unsigned long) OP_MASK_VECBYTE) | |
12374 | { | |
12375 | as_bad (_("bad byte vector index (%ld)"), | |
12376 | (long) imm_expr.X_add_number); | |
12377 | imm_expr.X_add_number = 0; | |
12378 | } | |
12379 | ||
12380 | INSERT_OPERAND (0, VECBYTE, *ip, imm_expr.X_add_number); | |
12381 | imm_expr.X_op = O_absent; | |
12382 | s = expr_end; | |
12383 | continue; | |
12384 | ||
12385 | case '%': | |
12386 | gas_assert (!mips_opts.micromips); | |
12387 | my_getExpression (&imm_expr, s); | |
12388 | check_absolute_expr (ip, &imm_expr); | |
12389 | ||
12390 | if ((unsigned long) imm_expr.X_add_number | |
12391 | > (unsigned long) OP_MASK_VECALIGN) | |
12392 | { | |
12393 | as_bad (_("bad byte vector index (%ld)"), | |
12394 | (long) imm_expr.X_add_number); | |
12395 | imm_expr.X_add_number = 0; | |
12396 | } | |
12397 | ||
12398 | INSERT_OPERAND (0, VECALIGN, *ip, imm_expr.X_add_number); | |
12399 | imm_expr.X_op = O_absent; | |
12400 | s = expr_end; | |
12401 | continue; | |
12402 | ||
12403 | case 'm': /* Opcode extension character. */ | |
12404 | gas_assert (mips_opts.micromips); | |
12405 | c = *++args; | |
12406 | switch (c) | |
12407 | { | |
12408 | case 'r': | |
12409 | if (strncmp (s, "$pc", 3) == 0) | |
12410 | { | |
12411 | s += 3; | |
12412 | continue; | |
12413 | } | |
12414 | break; | |
12415 | ||
12416 | case 'a': | |
12417 | case 'b': | |
12418 | case 'c': | |
12419 | case 'd': | |
12420 | case 'e': | |
12421 | case 'f': | |
12422 | case 'g': | |
12423 | case 'h': | |
12424 | case 'i': | |
12425 | case 'j': | |
12426 | case 'l': | |
12427 | case 'm': | |
12428 | case 'n': | |
12429 | case 'p': | |
12430 | case 'q': | |
12431 | case 's': | |
12432 | case 't': | |
12433 | case 'x': | |
12434 | case 'y': | |
12435 | case 'z': | |
12436 | s_reset = s; | |
12437 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
12438 | if (regno == AT && mips_opts.at) | |
12439 | { | |
12440 | if (mips_opts.at == ATREG) | |
12441 | as_warn (_("Used $at without \".set noat\"")); | |
12442 | else | |
12443 | as_warn (_("Used $%u with \".set at=$%u\""), | |
12444 | regno, mips_opts.at); | |
12445 | } | |
12446 | if (!ok) | |
12447 | { | |
12448 | if (c == 'c') | |
12449 | { | |
12450 | gas_assert (args[1] == ','); | |
12451 | regno = lastregno; | |
12452 | ++args; | |
12453 | } | |
12454 | else if (c == 't') | |
12455 | { | |
12456 | gas_assert (args[1] == ','); | |
12457 | ++args; | |
12458 | continue; /* Nothing to do. */ | |
12459 | } | |
12460 | else | |
12461 | break; | |
12462 | } | |
12463 | ||
12464 | if (c == 'j' && !strncmp (ip->insn_mo->name, "jalr", 4)) | |
12465 | { | |
12466 | if (regno == lastregno) | |
12467 | { | |
12468 | insn_error | |
12469 | = _("Source and destination must be different"); | |
12470 | continue; | |
12471 | } | |
12472 | if (regno == 31 && lastregno == 0xffffffff) | |
12473 | { | |
12474 | insn_error | |
12475 | = _("A destination register must be supplied"); | |
12476 | continue; | |
12477 | } | |
12478 | } | |
12479 | ||
12480 | if (*s == ' ') | |
12481 | ++s; | |
12482 | if (args[1] != *s) | |
12483 | { | |
12484 | if (c == 'e') | |
12485 | { | |
12486 | gas_assert (args[1] == ','); | |
12487 | regno = lastregno; | |
12488 | s = s_reset; | |
12489 | ++args; | |
12490 | } | |
12491 | else if (c == 't') | |
12492 | { | |
12493 | gas_assert (args[1] == ','); | |
12494 | s = s_reset; | |
12495 | ++args; | |
12496 | continue; /* Nothing to do. */ | |
12497 | } | |
12498 | } | |
12499 | ||
12500 | /* Make sure regno is the same as lastregno. */ | |
12501 | if (c == 't' && regno != lastregno) | |
12502 | break; | |
12503 | ||
12504 | /* Make sure regno is the same as destregno. */ | |
12505 | if (c == 'x' && regno != destregno) | |
12506 | break; | |
12507 | ||
12508 | /* We need to save regno, before regno maps to the | |
12509 | microMIPS register encoding. */ | |
12510 | lastregno = regno; | |
12511 | ||
12512 | if (c == 'f') | |
12513 | destregno = regno; | |
12514 | ||
12515 | switch (c) | |
12516 | { | |
12517 | case 'a': | |
12518 | if (regno != GP) | |
12519 | regno = ILLEGAL_REG; | |
12520 | break; | |
12521 | ||
12522 | case 'b': | |
12523 | regno = mips32_to_micromips_reg_b_map[regno]; | |
12524 | break; | |
12525 | ||
12526 | case 'c': | |
12527 | regno = mips32_to_micromips_reg_c_map[regno]; | |
12528 | break; | |
12529 | ||
12530 | case 'd': | |
12531 | regno = mips32_to_micromips_reg_d_map[regno]; | |
12532 | break; | |
12533 | ||
12534 | case 'e': | |
12535 | regno = mips32_to_micromips_reg_e_map[regno]; | |
12536 | break; | |
12537 | ||
12538 | case 'f': | |
12539 | regno = mips32_to_micromips_reg_f_map[regno]; | |
12540 | break; | |
12541 | ||
12542 | case 'g': | |
12543 | regno = mips32_to_micromips_reg_g_map[regno]; | |
12544 | break; | |
12545 | ||
12546 | case 'h': | |
12547 | regno = mips32_to_micromips_reg_h_map[regno]; | |
12548 | break; | |
12549 | ||
12550 | case 'i': | |
12551 | switch (EXTRACT_OPERAND (1, MI, *ip)) | |
12552 | { | |
12553 | case 4: | |
12554 | if (regno == 21) | |
12555 | regno = 3; | |
12556 | else if (regno == 22) | |
12557 | regno = 4; | |
12558 | else if (regno == 5) | |
12559 | regno = 5; | |
12560 | else if (regno == 6) | |
12561 | regno = 6; | |
12562 | else if (regno == 7) | |
12563 | regno = 7; | |
12564 | else | |
12565 | regno = ILLEGAL_REG; | |
12566 | break; | |
12567 | ||
12568 | case 5: | |
12569 | if (regno == 6) | |
12570 | regno = 0; | |
12571 | else if (regno == 7) | |
12572 | regno = 1; | |
12573 | else | |
12574 | regno = ILLEGAL_REG; | |
12575 | break; | |
12576 | ||
12577 | case 6: | |
12578 | if (regno == 7) | |
12579 | regno = 2; | |
12580 | else | |
12581 | regno = ILLEGAL_REG; | |
12582 | break; | |
12583 | ||
12584 | default: | |
12585 | regno = ILLEGAL_REG; | |
12586 | break; | |
12587 | } | |
12588 | break; | |
12589 | ||
12590 | case 'l': | |
12591 | regno = mips32_to_micromips_reg_l_map[regno]; | |
12592 | break; | |
12593 | ||
12594 | case 'm': | |
12595 | regno = mips32_to_micromips_reg_m_map[regno]; | |
12596 | break; | |
12597 | ||
12598 | case 'n': | |
12599 | regno = mips32_to_micromips_reg_n_map[regno]; | |
12600 | break; | |
12601 | ||
12602 | case 'q': | |
12603 | regno = mips32_to_micromips_reg_q_map[regno]; | |
12604 | break; | |
12605 | ||
12606 | case 's': | |
12607 | if (regno != SP) | |
12608 | regno = ILLEGAL_REG; | |
12609 | break; | |
12610 | ||
12611 | case 'y': | |
12612 | if (regno != 31) | |
12613 | regno = ILLEGAL_REG; | |
12614 | break; | |
12615 | ||
12616 | case 'z': | |
12617 | if (regno != ZERO) | |
12618 | regno = ILLEGAL_REG; | |
12619 | break; | |
12620 | ||
12621 | case 'j': /* Do nothing. */ | |
12622 | case 'p': | |
12623 | case 't': | |
12624 | case 'x': | |
12625 | break; | |
12626 | ||
12627 | default: | |
12628 | internalError (); | |
12629 | } | |
12630 | ||
12631 | if (regno == ILLEGAL_REG) | |
12632 | break; | |
12633 | ||
12634 | switch (c) | |
12635 | { | |
12636 | case 'b': | |
12637 | INSERT_OPERAND (1, MB, *ip, regno); | |
12638 | break; | |
12639 | ||
12640 | case 'c': | |
12641 | INSERT_OPERAND (1, MC, *ip, regno); | |
12642 | break; | |
12643 | ||
12644 | case 'd': | |
12645 | INSERT_OPERAND (1, MD, *ip, regno); | |
12646 | break; | |
12647 | ||
12648 | case 'e': | |
12649 | INSERT_OPERAND (1, ME, *ip, regno); | |
12650 | break; | |
12651 | ||
12652 | case 'f': | |
12653 | INSERT_OPERAND (1, MF, *ip, regno); | |
12654 | break; | |
12655 | ||
12656 | case 'g': | |
12657 | INSERT_OPERAND (1, MG, *ip, regno); | |
12658 | break; | |
12659 | ||
12660 | case 'h': | |
12661 | INSERT_OPERAND (1, MH, *ip, regno); | |
12662 | break; | |
12663 | ||
12664 | case 'i': | |
12665 | INSERT_OPERAND (1, MI, *ip, regno); | |
12666 | break; | |
12667 | ||
12668 | case 'j': | |
12669 | INSERT_OPERAND (1, MJ, *ip, regno); | |
12670 | break; | |
12671 | ||
12672 | case 'l': | |
12673 | INSERT_OPERAND (1, ML, *ip, regno); | |
12674 | break; | |
12675 | ||
12676 | case 'm': | |
12677 | INSERT_OPERAND (1, MM, *ip, regno); | |
12678 | break; | |
12679 | ||
12680 | case 'n': | |
12681 | INSERT_OPERAND (1, MN, *ip, regno); | |
12682 | break; | |
12683 | ||
12684 | case 'p': | |
12685 | INSERT_OPERAND (1, MP, *ip, regno); | |
12686 | break; | |
12687 | ||
12688 | case 'q': | |
12689 | INSERT_OPERAND (1, MQ, *ip, regno); | |
12690 | break; | |
12691 | ||
12692 | case 'a': /* Do nothing. */ | |
12693 | case 's': /* Do nothing. */ | |
12694 | case 't': /* Do nothing. */ | |
12695 | case 'x': /* Do nothing. */ | |
12696 | case 'y': /* Do nothing. */ | |
12697 | case 'z': /* Do nothing. */ | |
12698 | break; | |
12699 | ||
12700 | default: | |
12701 | internalError (); | |
12702 | } | |
12703 | continue; | |
12704 | ||
12705 | case 'A': | |
12706 | { | |
12707 | bfd_reloc_code_real_type r[3]; | |
12708 | expressionS ep; | |
12709 | int imm; | |
12710 | ||
12711 | /* Check whether there is only a single bracketed | |
12712 | expression left. If so, it must be the base register | |
12713 | and the constant must be zero. */ | |
12714 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12715 | { | |
12716 | INSERT_OPERAND (1, IMMA, *ip, 0); | |
12717 | continue; | |
12718 | } | |
12719 | ||
12720 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12721 | || !expr_const_in_range (&ep, -64, 64, 2)) | |
12722 | break; | |
12723 | ||
12724 | imm = ep.X_add_number >> 2; | |
12725 | INSERT_OPERAND (1, IMMA, *ip, imm); | |
12726 | } | |
12727 | s = expr_end; | |
12728 | continue; | |
12729 | ||
12730 | case 'B': | |
12731 | { | |
12732 | bfd_reloc_code_real_type r[3]; | |
12733 | expressionS ep; | |
12734 | int imm; | |
12735 | ||
12736 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12737 | || ep.X_op != O_constant) | |
12738 | break; | |
12739 | ||
12740 | for (imm = 0; imm < 8; imm++) | |
12741 | if (micromips_imm_b_map[imm] == ep.X_add_number) | |
12742 | break; | |
12743 | if (imm >= 8) | |
12744 | break; | |
12745 | ||
12746 | INSERT_OPERAND (1, IMMB, *ip, imm); | |
12747 | } | |
12748 | s = expr_end; | |
12749 | continue; | |
12750 | ||
12751 | case 'C': | |
12752 | { | |
12753 | bfd_reloc_code_real_type r[3]; | |
12754 | expressionS ep; | |
12755 | int imm; | |
12756 | ||
12757 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12758 | || ep.X_op != O_constant) | |
12759 | break; | |
12760 | ||
12761 | for (imm = 0; imm < 16; imm++) | |
12762 | if (micromips_imm_c_map[imm] == ep.X_add_number) | |
12763 | break; | |
12764 | if (imm >= 16) | |
12765 | break; | |
12766 | ||
12767 | INSERT_OPERAND (1, IMMC, *ip, imm); | |
12768 | } | |
12769 | s = expr_end; | |
12770 | continue; | |
12771 | ||
12772 | case 'D': /* pc relative offset */ | |
12773 | case 'E': /* pc relative offset */ | |
12774 | my_getExpression (&offset_expr, s); | |
12775 | if (offset_expr.X_op == O_register) | |
12776 | break; | |
12777 | ||
40209cad MR |
12778 | if (!forced_insn_length) |
12779 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; | |
12780 | else if (c == 'D') | |
12781 | *offset_reloc = BFD_RELOC_MICROMIPS_10_PCREL_S1; | |
12782 | else | |
12783 | *offset_reloc = BFD_RELOC_MICROMIPS_7_PCREL_S1; | |
df58fc94 RS |
12784 | s = expr_end; |
12785 | continue; | |
12786 | ||
12787 | case 'F': | |
12788 | { | |
12789 | bfd_reloc_code_real_type r[3]; | |
12790 | expressionS ep; | |
12791 | int imm; | |
12792 | ||
12793 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12794 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
12795 | break; | |
12796 | ||
12797 | imm = ep.X_add_number; | |
12798 | INSERT_OPERAND (1, IMMF, *ip, imm); | |
12799 | } | |
12800 | s = expr_end; | |
12801 | continue; | |
12802 | ||
12803 | case 'G': | |
12804 | { | |
12805 | bfd_reloc_code_real_type r[3]; | |
12806 | expressionS ep; | |
12807 | int imm; | |
12808 | ||
12809 | /* Check whether there is only a single bracketed | |
12810 | expression left. If so, it must be the base register | |
12811 | and the constant must be zero. */ | |
12812 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12813 | { | |
12814 | INSERT_OPERAND (1, IMMG, *ip, 0); | |
12815 | continue; | |
12816 | } | |
12817 | ||
12818 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12819 | || !expr_const_in_range (&ep, -1, 15, 0)) | |
12820 | break; | |
12821 | ||
12822 | imm = ep.X_add_number & 15; | |
12823 | INSERT_OPERAND (1, IMMG, *ip, imm); | |
12824 | } | |
12825 | s = expr_end; | |
12826 | continue; | |
12827 | ||
12828 | case 'H': | |
12829 | { | |
12830 | bfd_reloc_code_real_type r[3]; | |
12831 | expressionS ep; | |
12832 | int imm; | |
12833 | ||
12834 | /* Check whether there is only a single bracketed | |
12835 | expression left. If so, it must be the base register | |
12836 | and the constant must be zero. */ | |
12837 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12838 | { | |
12839 | INSERT_OPERAND (1, IMMH, *ip, 0); | |
12840 | continue; | |
12841 | } | |
12842 | ||
12843 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12844 | || !expr_const_in_range (&ep, 0, 16, 1)) | |
12845 | break; | |
12846 | ||
12847 | imm = ep.X_add_number >> 1; | |
12848 | INSERT_OPERAND (1, IMMH, *ip, imm); | |
12849 | } | |
12850 | s = expr_end; | |
12851 | continue; | |
12852 | ||
12853 | case 'I': | |
12854 | { | |
12855 | bfd_reloc_code_real_type r[3]; | |
12856 | expressionS ep; | |
12857 | int imm; | |
12858 | ||
12859 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12860 | || !expr_const_in_range (&ep, -1, 127, 0)) | |
12861 | break; | |
12862 | ||
12863 | imm = ep.X_add_number & 127; | |
12864 | INSERT_OPERAND (1, IMMI, *ip, imm); | |
12865 | } | |
12866 | s = expr_end; | |
12867 | continue; | |
12868 | ||
12869 | case 'J': | |
12870 | { | |
12871 | bfd_reloc_code_real_type r[3]; | |
12872 | expressionS ep; | |
12873 | int imm; | |
12874 | ||
12875 | /* Check whether there is only a single bracketed | |
12876 | expression left. If so, it must be the base register | |
12877 | and the constant must be zero. */ | |
12878 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12879 | { | |
12880 | INSERT_OPERAND (1, IMMJ, *ip, 0); | |
12881 | continue; | |
12882 | } | |
12883 | ||
12884 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12885 | || !expr_const_in_range (&ep, 0, 16, 2)) | |
12886 | break; | |
12887 | ||
12888 | imm = ep.X_add_number >> 2; | |
12889 | INSERT_OPERAND (1, IMMJ, *ip, imm); | |
12890 | } | |
12891 | s = expr_end; | |
12892 | continue; | |
12893 | ||
12894 | case 'L': | |
12895 | { | |
12896 | bfd_reloc_code_real_type r[3]; | |
12897 | expressionS ep; | |
12898 | int imm; | |
12899 | ||
12900 | /* Check whether there is only a single bracketed | |
12901 | expression left. If so, it must be the base register | |
12902 | and the constant must be zero. */ | |
12903 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
12904 | { | |
12905 | INSERT_OPERAND (1, IMML, *ip, 0); | |
12906 | continue; | |
12907 | } | |
12908 | ||
12909 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12910 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
12911 | break; | |
12912 | ||
12913 | imm = ep.X_add_number; | |
12914 | INSERT_OPERAND (1, IMML, *ip, imm); | |
12915 | } | |
12916 | s = expr_end; | |
12917 | continue; | |
12918 | ||
12919 | case 'M': | |
12920 | { | |
12921 | bfd_reloc_code_real_type r[3]; | |
12922 | expressionS ep; | |
12923 | int imm; | |
12924 | ||
12925 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12926 | || !expr_const_in_range (&ep, 1, 9, 0)) | |
12927 | break; | |
12928 | ||
12929 | imm = ep.X_add_number & 7; | |
12930 | INSERT_OPERAND (1, IMMM, *ip, imm); | |
12931 | } | |
12932 | s = expr_end; | |
12933 | continue; | |
12934 | ||
12935 | case 'N': /* Register list for lwm and swm. */ | |
12936 | { | |
12937 | /* A comma-separated list of registers and/or | |
12938 | dash-separated contiguous ranges including | |
12939 | both ra and a set of one or more registers | |
12940 | starting at s0 up to s3 which have to be | |
12941 | consecutive, e.g.: | |
12942 | ||
12943 | s0, ra | |
12944 | s0, s1, ra, s2, s3 | |
12945 | s0-s2, ra | |
12946 | ||
12947 | and any permutations of these. */ | |
12948 | unsigned int reglist; | |
12949 | int imm; | |
12950 | ||
12951 | if (!reglist_lookup (&s, RTYPE_NUM | RTYPE_GP, ®list)) | |
12952 | break; | |
12953 | ||
12954 | if ((reglist & 0xfff1ffff) != 0x80010000) | |
12955 | break; | |
12956 | ||
12957 | reglist = (reglist >> 17) & 7; | |
12958 | reglist += 1; | |
12959 | if ((reglist & -reglist) != reglist) | |
12960 | break; | |
252b5132 | 12961 | |
df58fc94 RS |
12962 | imm = ffs (reglist) - 1; |
12963 | INSERT_OPERAND (1, IMMN, *ip, imm); | |
12964 | } | |
12965 | continue; | |
252b5132 | 12966 | |
df58fc94 RS |
12967 | case 'O': /* sdbbp 4-bit code. */ |
12968 | { | |
12969 | bfd_reloc_code_real_type r[3]; | |
12970 | expressionS ep; | |
12971 | int imm; | |
12972 | ||
12973 | if (my_getSmallExpression (&ep, r, s) > 0 | |
12974 | || !expr_const_in_range (&ep, 0, 16, 0)) | |
12975 | break; | |
12976 | ||
12977 | imm = ep.X_add_number; | |
12978 | INSERT_OPERAND (1, IMMO, *ip, imm); | |
252b5132 | 12979 | } |
df58fc94 RS |
12980 | s = expr_end; |
12981 | continue; | |
252b5132 | 12982 | |
df58fc94 RS |
12983 | case 'P': |
12984 | { | |
12985 | bfd_reloc_code_real_type r[3]; | |
12986 | expressionS ep; | |
12987 | int imm; | |
5e0116d5 | 12988 | |
df58fc94 RS |
12989 | if (my_getSmallExpression (&ep, r, s) > 0 |
12990 | || !expr_const_in_range (&ep, 0, 32, 2)) | |
12991 | break; | |
5e0116d5 | 12992 | |
df58fc94 RS |
12993 | imm = ep.X_add_number >> 2; |
12994 | INSERT_OPERAND (1, IMMP, *ip, imm); | |
12995 | } | |
12996 | s = expr_end; | |
12997 | continue; | |
5e0116d5 | 12998 | |
df58fc94 RS |
12999 | case 'Q': |
13000 | { | |
13001 | bfd_reloc_code_real_type r[3]; | |
13002 | expressionS ep; | |
13003 | int imm; | |
5e0116d5 | 13004 | |
df58fc94 RS |
13005 | if (my_getSmallExpression (&ep, r, s) > 0 |
13006 | || !expr_const_in_range (&ep, -0x400000, 0x400000, 2)) | |
13007 | break; | |
252b5132 | 13008 | |
df58fc94 RS |
13009 | imm = ep.X_add_number >> 2; |
13010 | INSERT_OPERAND (1, IMMQ, *ip, imm); | |
13011 | } | |
13012 | s = expr_end; | |
13013 | continue; | |
4614d845 | 13014 | |
df58fc94 RS |
13015 | case 'U': |
13016 | { | |
13017 | bfd_reloc_code_real_type r[3]; | |
13018 | expressionS ep; | |
13019 | int imm; | |
13020 | ||
13021 | /* Check whether there is only a single bracketed | |
13022 | expression left. If so, it must be the base register | |
13023 | and the constant must be zero. */ | |
13024 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
13025 | { | |
13026 | INSERT_OPERAND (1, IMMU, *ip, 0); | |
13027 | continue; | |
13028 | } | |
13029 | ||
13030 | if (my_getSmallExpression (&ep, r, s) > 0 | |
13031 | || !expr_const_in_range (&ep, 0, 32, 2)) | |
13032 | break; | |
13033 | ||
13034 | imm = ep.X_add_number >> 2; | |
13035 | INSERT_OPERAND (1, IMMU, *ip, imm); | |
13036 | } | |
13037 | s = expr_end; | |
5e0116d5 | 13038 | continue; |
252b5132 | 13039 | |
df58fc94 RS |
13040 | case 'W': |
13041 | { | |
13042 | bfd_reloc_code_real_type r[3]; | |
13043 | expressionS ep; | |
13044 | int imm; | |
252b5132 | 13045 | |
df58fc94 RS |
13046 | if (my_getSmallExpression (&ep, r, s) > 0 |
13047 | || !expr_const_in_range (&ep, 0, 64, 2)) | |
13048 | break; | |
252b5132 | 13049 | |
df58fc94 RS |
13050 | imm = ep.X_add_number >> 2; |
13051 | INSERT_OPERAND (1, IMMW, *ip, imm); | |
13052 | } | |
13053 | s = expr_end; | |
13054 | continue; | |
252b5132 | 13055 | |
df58fc94 RS |
13056 | case 'X': |
13057 | { | |
13058 | bfd_reloc_code_real_type r[3]; | |
13059 | expressionS ep; | |
13060 | int imm; | |
252b5132 | 13061 | |
df58fc94 RS |
13062 | if (my_getSmallExpression (&ep, r, s) > 0 |
13063 | || !expr_const_in_range (&ep, -8, 8, 0)) | |
13064 | break; | |
252b5132 | 13065 | |
df58fc94 RS |
13066 | imm = ep.X_add_number; |
13067 | INSERT_OPERAND (1, IMMX, *ip, imm); | |
13068 | } | |
13069 | s = expr_end; | |
13070 | continue; | |
252b5132 | 13071 | |
df58fc94 RS |
13072 | case 'Y': |
13073 | { | |
13074 | bfd_reloc_code_real_type r[3]; | |
13075 | expressionS ep; | |
13076 | int imm; | |
156c2f8b | 13077 | |
df58fc94 RS |
13078 | if (my_getSmallExpression (&ep, r, s) > 0 |
13079 | || expr_const_in_range (&ep, -2, 2, 2) | |
13080 | || !expr_const_in_range (&ep, -258, 258, 2)) | |
13081 | break; | |
156c2f8b | 13082 | |
df58fc94 RS |
13083 | imm = ep.X_add_number >> 2; |
13084 | imm = ((imm >> 1) & ~0xff) | (imm & 0xff); | |
13085 | INSERT_OPERAND (1, IMMY, *ip, imm); | |
13086 | } | |
13087 | s = expr_end; | |
13088 | continue; | |
60b63b72 | 13089 | |
df58fc94 RS |
13090 | case 'Z': |
13091 | { | |
13092 | bfd_reloc_code_real_type r[3]; | |
13093 | expressionS ep; | |
13094 | ||
13095 | if (my_getSmallExpression (&ep, r, s) > 0 | |
13096 | || !expr_const_in_range (&ep, 0, 1, 0)) | |
13097 | break; | |
13098 | } | |
13099 | s = expr_end; | |
13100 | continue; | |
13101 | ||
13102 | default: | |
13103 | as_bad (_("Internal error: bad microMIPS opcode " | |
13104 | "(unknown extension operand type `m%c'): %s %s"), | |
13105 | *args, insn->name, insn->args); | |
13106 | /* Further processing is fruitless. */ | |
13107 | return; | |
60b63b72 | 13108 | } |
df58fc94 | 13109 | break; |
60b63b72 | 13110 | |
df58fc94 RS |
13111 | case 'n': /* Register list for 32-bit lwm and swm. */ |
13112 | gas_assert (mips_opts.micromips); | |
13113 | { | |
13114 | /* A comma-separated list of registers and/or | |
13115 | dash-separated contiguous ranges including | |
13116 | at least one of ra and a set of one or more | |
13117 | registers starting at s0 up to s7 and then | |
13118 | s8 which have to be consecutive, e.g.: | |
13119 | ||
13120 | ra | |
13121 | s0 | |
13122 | ra, s0, s1, s2 | |
13123 | s0-s8 | |
13124 | s0-s5, ra | |
13125 | ||
13126 | and any permutations of these. */ | |
13127 | unsigned int reglist; | |
13128 | int imm; | |
13129 | int ra; | |
13130 | ||
13131 | if (!reglist_lookup (&s, RTYPE_NUM | RTYPE_GP, ®list)) | |
13132 | break; | |
13133 | ||
13134 | if ((reglist & 0x3f00ffff) != 0) | |
13135 | break; | |
13136 | ||
13137 | ra = (reglist >> 27) & 0x10; | |
13138 | reglist = ((reglist >> 22) & 0x100) | ((reglist >> 16) & 0xff); | |
13139 | reglist += 1; | |
13140 | if ((reglist & -reglist) != reglist) | |
13141 | break; | |
13142 | ||
13143 | imm = (ffs (reglist) - 1) | ra; | |
13144 | INSERT_OPERAND (1, RT, *ip, imm); | |
13145 | imm_expr.X_op = O_absent; | |
13146 | } | |
60b63b72 RS |
13147 | continue; |
13148 | ||
df58fc94 RS |
13149 | case '|': /* 4-bit trap code. */ |
13150 | gas_assert (mips_opts.micromips); | |
60b63b72 RS |
13151 | my_getExpression (&imm_expr, s); |
13152 | check_absolute_expr (ip, &imm_expr); | |
60b63b72 | 13153 | if ((unsigned long) imm_expr.X_add_number |
df58fc94 RS |
13154 | > MICROMIPSOP_MASK_TRAP) |
13155 | as_bad (_("Trap code (%lu) for %s not in 0..15 range"), | |
13156 | (unsigned long) imm_expr.X_add_number, | |
13157 | ip->insn_mo->name); | |
13158 | INSERT_OPERAND (1, TRAP, *ip, imm_expr.X_add_number); | |
60b63b72 RS |
13159 | imm_expr.X_op = O_absent; |
13160 | s = expr_end; | |
13161 | continue; | |
13162 | ||
252b5132 | 13163 | default: |
f71d0d44 | 13164 | as_bad (_("Bad char = '%c'\n"), *args); |
252b5132 RH |
13165 | internalError (); |
13166 | } | |
13167 | break; | |
13168 | } | |
13169 | /* Args don't match. */ | |
df58fc94 RS |
13170 | s = argsStart; |
13171 | insn_error = _("Illegal operands"); | |
13172 | if (insn + 1 < past && !strcmp (insn->name, insn[1].name)) | |
252b5132 RH |
13173 | { |
13174 | ++insn; | |
252b5132 RH |
13175 | continue; |
13176 | } | |
df58fc94 RS |
13177 | else if (wrong_delay_slot_insns && need_delay_slot_ok) |
13178 | { | |
13179 | gas_assert (firstinsn); | |
13180 | need_delay_slot_ok = FALSE; | |
13181 | past = insn + 1; | |
13182 | insn = firstinsn; | |
13183 | continue; | |
13184 | } | |
252b5132 RH |
13185 | return; |
13186 | } | |
13187 | } | |
13188 | ||
0499d65b TS |
13189 | #define SKIP_SPACE_TABS(S) { while (*(S) == ' ' || *(S) == '\t') ++(S); } |
13190 | ||
252b5132 RH |
13191 | /* This routine assembles an instruction into its binary format when |
13192 | assembling for the mips16. As a side effect, it sets one of the | |
df58fc94 RS |
13193 | global variables imm_reloc or offset_reloc to the type of relocation |
13194 | to do if one of the operands is an address expression. It also sets | |
13195 | forced_insn_length to the resulting instruction size in bytes if the | |
13196 | user explicitly requested a small or extended instruction. */ | |
252b5132 RH |
13197 | |
13198 | static void | |
17a2f251 | 13199 | mips16_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
13200 | { |
13201 | char *s; | |
13202 | const char *args; | |
13203 | struct mips_opcode *insn; | |
13204 | char *argsstart; | |
13205 | unsigned int regno; | |
13206 | unsigned int lastregno = 0; | |
13207 | char *s_reset; | |
d6f16593 | 13208 | size_t i; |
252b5132 RH |
13209 | |
13210 | insn_error = NULL; | |
13211 | ||
df58fc94 | 13212 | forced_insn_length = 0; |
252b5132 | 13213 | |
3882b010 | 13214 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
13215 | ; |
13216 | switch (*s) | |
13217 | { | |
13218 | case '\0': | |
13219 | break; | |
13220 | ||
13221 | case ' ': | |
13222 | *s++ = '\0'; | |
13223 | break; | |
13224 | ||
13225 | case '.': | |
13226 | if (s[1] == 't' && s[2] == ' ') | |
13227 | { | |
13228 | *s = '\0'; | |
df58fc94 | 13229 | forced_insn_length = 2; |
252b5132 RH |
13230 | s += 3; |
13231 | break; | |
13232 | } | |
13233 | else if (s[1] == 'e' && s[2] == ' ') | |
13234 | { | |
13235 | *s = '\0'; | |
df58fc94 | 13236 | forced_insn_length = 4; |
252b5132 RH |
13237 | s += 3; |
13238 | break; | |
13239 | } | |
13240 | /* Fall through. */ | |
13241 | default: | |
13242 | insn_error = _("unknown opcode"); | |
13243 | return; | |
13244 | } | |
13245 | ||
df58fc94 RS |
13246 | if (mips_opts.noautoextend && !forced_insn_length) |
13247 | forced_insn_length = 2; | |
252b5132 RH |
13248 | |
13249 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
13250 | { | |
13251 | insn_error = _("unrecognized opcode"); | |
13252 | return; | |
13253 | } | |
13254 | ||
13255 | argsstart = s; | |
13256 | for (;;) | |
13257 | { | |
9b3f89ee TS |
13258 | bfd_boolean ok; |
13259 | ||
9c2799c2 | 13260 | gas_assert (strcmp (insn->name, str) == 0); |
252b5132 | 13261 | |
037b32b9 | 13262 | ok = is_opcode_valid_16 (insn); |
9b3f89ee TS |
13263 | if (! ok) |
13264 | { | |
13265 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] | |
13266 | && strcmp (insn->name, insn[1].name) == 0) | |
13267 | { | |
13268 | ++insn; | |
13269 | continue; | |
13270 | } | |
13271 | else | |
13272 | { | |
13273 | if (!insn_error) | |
13274 | { | |
13275 | static char buf[100]; | |
13276 | sprintf (buf, | |
7bd942df | 13277 | _("Opcode not supported on this processor: %s (%s)"), |
9b3f89ee TS |
13278 | mips_cpu_info_from_arch (mips_opts.arch)->name, |
13279 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
13280 | insn_error = buf; | |
13281 | } | |
13282 | return; | |
13283 | } | |
13284 | } | |
13285 | ||
1e915849 | 13286 | create_insn (ip, insn); |
252b5132 | 13287 | imm_expr.X_op = O_absent; |
f6688943 TS |
13288 | imm_reloc[0] = BFD_RELOC_UNUSED; |
13289 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
13290 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
5f74bc13 | 13291 | imm2_expr.X_op = O_absent; |
252b5132 | 13292 | offset_expr.X_op = O_absent; |
f6688943 TS |
13293 | offset_reloc[0] = BFD_RELOC_UNUSED; |
13294 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
13295 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
13296 | for (args = insn->args; 1; ++args) |
13297 | { | |
13298 | int c; | |
13299 | ||
13300 | if (*s == ' ') | |
13301 | ++s; | |
13302 | ||
13303 | /* In this switch statement we call break if we did not find | |
13304 | a match, continue if we did find a match, or return if we | |
13305 | are done. */ | |
13306 | ||
13307 | c = *args; | |
13308 | switch (c) | |
13309 | { | |
13310 | case '\0': | |
13311 | if (*s == '\0') | |
13312 | { | |
13313 | /* Stuff the immediate value in now, if we can. */ | |
13314 | if (imm_expr.X_op == O_constant | |
f6688943 | 13315 | && *imm_reloc > BFD_RELOC_UNUSED |
738e5348 RS |
13316 | && *imm_reloc != BFD_RELOC_MIPS16_GOT16 |
13317 | && *imm_reloc != BFD_RELOC_MIPS16_CALL16 | |
252b5132 RH |
13318 | && insn->pinfo != INSN_MACRO) |
13319 | { | |
d6f16593 MR |
13320 | valueT tmp; |
13321 | ||
13322 | switch (*offset_reloc) | |
13323 | { | |
13324 | case BFD_RELOC_MIPS16_HI16_S: | |
13325 | tmp = (imm_expr.X_add_number + 0x8000) >> 16; | |
13326 | break; | |
13327 | ||
13328 | case BFD_RELOC_MIPS16_HI16: | |
13329 | tmp = imm_expr.X_add_number >> 16; | |
13330 | break; | |
13331 | ||
13332 | case BFD_RELOC_MIPS16_LO16: | |
13333 | tmp = ((imm_expr.X_add_number + 0x8000) & 0xffff) | |
13334 | - 0x8000; | |
13335 | break; | |
13336 | ||
13337 | case BFD_RELOC_UNUSED: | |
13338 | tmp = imm_expr.X_add_number; | |
13339 | break; | |
13340 | ||
13341 | default: | |
13342 | internalError (); | |
13343 | } | |
13344 | *offset_reloc = BFD_RELOC_UNUSED; | |
13345 | ||
c4e7957c | 13346 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
df58fc94 RS |
13347 | tmp, TRUE, forced_insn_length == 2, |
13348 | forced_insn_length == 4, &ip->insn_opcode, | |
252b5132 RH |
13349 | &ip->use_extend, &ip->extend); |
13350 | imm_expr.X_op = O_absent; | |
f6688943 | 13351 | *imm_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
13352 | } |
13353 | ||
13354 | return; | |
13355 | } | |
13356 | break; | |
13357 | ||
13358 | case ',': | |
13359 | if (*s++ == c) | |
13360 | continue; | |
13361 | s--; | |
13362 | switch (*++args) | |
13363 | { | |
13364 | case 'v': | |
bf12938e | 13365 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 RH |
13366 | continue; |
13367 | case 'w': | |
bf12938e | 13368 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
13369 | continue; |
13370 | } | |
13371 | break; | |
13372 | ||
13373 | case '(': | |
13374 | case ')': | |
13375 | if (*s++ == c) | |
13376 | continue; | |
13377 | break; | |
13378 | ||
13379 | case 'v': | |
13380 | case 'w': | |
13381 | if (s[0] != '$') | |
13382 | { | |
13383 | if (c == 'v') | |
bf12938e | 13384 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 | 13385 | else |
bf12938e | 13386 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
13387 | ++args; |
13388 | continue; | |
13389 | } | |
13390 | /* Fall through. */ | |
13391 | case 'x': | |
13392 | case 'y': | |
13393 | case 'z': | |
13394 | case 'Z': | |
13395 | case '0': | |
13396 | case 'S': | |
13397 | case 'R': | |
13398 | case 'X': | |
13399 | case 'Y': | |
707bfff6 TS |
13400 | s_reset = s; |
13401 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) | |
252b5132 | 13402 | { |
707bfff6 | 13403 | if (c == 'v' || c == 'w') |
85b51719 | 13404 | { |
707bfff6 | 13405 | if (c == 'v') |
a9e24354 | 13406 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
707bfff6 | 13407 | else |
a9e24354 | 13408 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
707bfff6 TS |
13409 | ++args; |
13410 | continue; | |
85b51719 | 13411 | } |
707bfff6 | 13412 | break; |
252b5132 RH |
13413 | } |
13414 | ||
13415 | if (*s == ' ') | |
13416 | ++s; | |
13417 | if (args[1] != *s) | |
13418 | { | |
13419 | if (c == 'v' || c == 'w') | |
13420 | { | |
13421 | regno = mips16_to_32_reg_map[lastregno]; | |
13422 | s = s_reset; | |
f9419b05 | 13423 | ++args; |
252b5132 RH |
13424 | } |
13425 | } | |
13426 | ||
13427 | switch (c) | |
13428 | { | |
13429 | case 'x': | |
13430 | case 'y': | |
13431 | case 'z': | |
13432 | case 'v': | |
13433 | case 'w': | |
13434 | case 'Z': | |
13435 | regno = mips32_to_16_reg_map[regno]; | |
13436 | break; | |
13437 | ||
13438 | case '0': | |
13439 | if (regno != 0) | |
13440 | regno = ILLEGAL_REG; | |
13441 | break; | |
13442 | ||
13443 | case 'S': | |
13444 | if (regno != SP) | |
13445 | regno = ILLEGAL_REG; | |
13446 | break; | |
13447 | ||
13448 | case 'R': | |
13449 | if (regno != RA) | |
13450 | regno = ILLEGAL_REG; | |
13451 | break; | |
13452 | ||
13453 | case 'X': | |
13454 | case 'Y': | |
741fe287 MR |
13455 | if (regno == AT && mips_opts.at) |
13456 | { | |
13457 | if (mips_opts.at == ATREG) | |
13458 | as_warn (_("used $at without \".set noat\"")); | |
13459 | else | |
13460 | as_warn (_("used $%u with \".set at=$%u\""), | |
13461 | regno, mips_opts.at); | |
13462 | } | |
252b5132 RH |
13463 | break; |
13464 | ||
13465 | default: | |
13466 | internalError (); | |
13467 | } | |
13468 | ||
13469 | if (regno == ILLEGAL_REG) | |
13470 | break; | |
13471 | ||
13472 | switch (c) | |
13473 | { | |
13474 | case 'x': | |
13475 | case 'v': | |
bf12938e | 13476 | MIPS16_INSERT_OPERAND (RX, *ip, regno); |
252b5132 RH |
13477 | break; |
13478 | case 'y': | |
13479 | case 'w': | |
bf12938e | 13480 | MIPS16_INSERT_OPERAND (RY, *ip, regno); |
252b5132 RH |
13481 | break; |
13482 | case 'z': | |
bf12938e | 13483 | MIPS16_INSERT_OPERAND (RZ, *ip, regno); |
252b5132 RH |
13484 | break; |
13485 | case 'Z': | |
bf12938e | 13486 | MIPS16_INSERT_OPERAND (MOVE32Z, *ip, regno); |
252b5132 RH |
13487 | case '0': |
13488 | case 'S': | |
13489 | case 'R': | |
13490 | break; | |
13491 | case 'X': | |
bf12938e | 13492 | MIPS16_INSERT_OPERAND (REGR32, *ip, regno); |
252b5132 RH |
13493 | break; |
13494 | case 'Y': | |
13495 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
bf12938e | 13496 | MIPS16_INSERT_OPERAND (REG32R, *ip, regno); |
252b5132 RH |
13497 | break; |
13498 | default: | |
13499 | internalError (); | |
13500 | } | |
13501 | ||
13502 | lastregno = regno; | |
13503 | continue; | |
13504 | ||
13505 | case 'P': | |
13506 | if (strncmp (s, "$pc", 3) == 0) | |
13507 | { | |
13508 | s += 3; | |
13509 | continue; | |
13510 | } | |
13511 | break; | |
13512 | ||
252b5132 RH |
13513 | case '5': |
13514 | case 'H': | |
13515 | case 'W': | |
13516 | case 'D': | |
13517 | case 'j': | |
252b5132 RH |
13518 | case 'V': |
13519 | case 'C': | |
13520 | case 'U': | |
13521 | case 'k': | |
13522 | case 'K': | |
d6f16593 MR |
13523 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); |
13524 | if (i > 0) | |
252b5132 | 13525 | { |
d6f16593 | 13526 | if (imm_expr.X_op != O_constant) |
252b5132 | 13527 | { |
df58fc94 | 13528 | forced_insn_length = 4; |
b34976b6 | 13529 | ip->use_extend = TRUE; |
252b5132 | 13530 | ip->extend = 0; |
252b5132 | 13531 | } |
d6f16593 MR |
13532 | else |
13533 | { | |
13534 | /* We need to relax this instruction. */ | |
13535 | *offset_reloc = *imm_reloc; | |
13536 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; | |
13537 | } | |
13538 | s = expr_end; | |
13539 | continue; | |
252b5132 | 13540 | } |
d6f16593 MR |
13541 | *imm_reloc = BFD_RELOC_UNUSED; |
13542 | /* Fall through. */ | |
13543 | case '<': | |
13544 | case '>': | |
13545 | case '[': | |
13546 | case ']': | |
13547 | case '4': | |
13548 | case '8': | |
13549 | my_getExpression (&imm_expr, s); | |
252b5132 RH |
13550 | if (imm_expr.X_op == O_register) |
13551 | { | |
13552 | /* What we thought was an expression turned out to | |
13553 | be a register. */ | |
13554 | ||
13555 | if (s[0] == '(' && args[1] == '(') | |
13556 | { | |
13557 | /* It looks like the expression was omitted | |
13558 | before a register indirection, which means | |
13559 | that the expression is implicitly zero. We | |
13560 | still set up imm_expr, so that we handle | |
13561 | explicit extensions correctly. */ | |
13562 | imm_expr.X_op = O_constant; | |
13563 | imm_expr.X_add_number = 0; | |
f6688943 | 13564 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13565 | continue; |
13566 | } | |
13567 | ||
13568 | break; | |
13569 | } | |
13570 | ||
13571 | /* We need to relax this instruction. */ | |
f6688943 | 13572 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13573 | s = expr_end; |
13574 | continue; | |
13575 | ||
13576 | case 'p': | |
13577 | case 'q': | |
13578 | case 'A': | |
13579 | case 'B': | |
13580 | case 'E': | |
13581 | /* We use offset_reloc rather than imm_reloc for the PC | |
13582 | relative operands. This lets macros with both | |
13583 | immediate and address operands work correctly. */ | |
13584 | my_getExpression (&offset_expr, s); | |
13585 | ||
13586 | if (offset_expr.X_op == O_register) | |
13587 | break; | |
13588 | ||
13589 | /* We need to relax this instruction. */ | |
f6688943 | 13590 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
13591 | s = expr_end; |
13592 | continue; | |
13593 | ||
13594 | case '6': /* break code */ | |
13595 | my_getExpression (&imm_expr, s); | |
13596 | check_absolute_expr (ip, &imm_expr); | |
13597 | if ((unsigned long) imm_expr.X_add_number > 63) | |
bf12938e RS |
13598 | as_warn (_("Invalid value for `%s' (%lu)"), |
13599 | ip->insn_mo->name, | |
13600 | (unsigned long) imm_expr.X_add_number); | |
13601 | MIPS16_INSERT_OPERAND (IMM6, *ip, imm_expr.X_add_number); | |
252b5132 RH |
13602 | imm_expr.X_op = O_absent; |
13603 | s = expr_end; | |
13604 | continue; | |
13605 | ||
13606 | case 'a': /* 26 bit address */ | |
13607 | my_getExpression (&offset_expr, s); | |
13608 | s = expr_end; | |
f6688943 | 13609 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
13610 | ip->insn_opcode <<= 16; |
13611 | continue; | |
13612 | ||
13613 | case 'l': /* register list for entry macro */ | |
13614 | case 'L': /* register list for exit macro */ | |
13615 | { | |
13616 | int mask; | |
13617 | ||
13618 | if (c == 'l') | |
13619 | mask = 0; | |
13620 | else | |
13621 | mask = 7 << 3; | |
13622 | while (*s != '\0') | |
13623 | { | |
707bfff6 | 13624 | unsigned int freg, reg1, reg2; |
252b5132 RH |
13625 | |
13626 | while (*s == ' ' || *s == ',') | |
13627 | ++s; | |
707bfff6 | 13628 | if (reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
252b5132 | 13629 | freg = 0; |
707bfff6 TS |
13630 | else if (reg_lookup (&s, RTYPE_FPU, ®1)) |
13631 | freg = 1; | |
252b5132 RH |
13632 | else |
13633 | { | |
707bfff6 TS |
13634 | as_bad (_("can't parse register list")); |
13635 | break; | |
252b5132 RH |
13636 | } |
13637 | if (*s == ' ') | |
13638 | ++s; | |
13639 | if (*s != '-') | |
13640 | reg2 = reg1; | |
13641 | else | |
13642 | { | |
13643 | ++s; | |
707bfff6 TS |
13644 | if (!reg_lookup (&s, freg ? RTYPE_FPU |
13645 | : (RTYPE_GP | RTYPE_NUM), ®2)) | |
252b5132 | 13646 | { |
707bfff6 TS |
13647 | as_bad (_("invalid register list")); |
13648 | break; | |
252b5132 RH |
13649 | } |
13650 | } | |
13651 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
13652 | { | |
13653 | mask &= ~ (7 << 3); | |
13654 | mask |= 5 << 3; | |
13655 | } | |
13656 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
13657 | { | |
13658 | mask &= ~ (7 << 3); | |
13659 | mask |= 6 << 3; | |
13660 | } | |
13661 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
13662 | mask |= (reg2 - 3) << 3; | |
13663 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
13664 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 13665 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
13666 | mask |= 1; |
13667 | else | |
13668 | { | |
13669 | as_bad (_("invalid register list")); | |
13670 | break; | |
13671 | } | |
13672 | } | |
13673 | /* The mask is filled in in the opcode table for the | |
13674 | benefit of the disassembler. We remove it before | |
13675 | applying the actual mask. */ | |
13676 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
13677 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
13678 | } | |
13679 | continue; | |
13680 | ||
0499d65b TS |
13681 | case 'm': /* Register list for save insn. */ |
13682 | case 'M': /* Register list for restore insn. */ | |
13683 | { | |
13684 | int opcode = 0; | |
13685 | int framesz = 0, seen_framesz = 0; | |
91d6fa6a | 13686 | int nargs = 0, statics = 0, sregs = 0; |
0499d65b TS |
13687 | |
13688 | while (*s != '\0') | |
13689 | { | |
13690 | unsigned int reg1, reg2; | |
13691 | ||
13692 | SKIP_SPACE_TABS (s); | |
13693 | while (*s == ',') | |
13694 | ++s; | |
13695 | SKIP_SPACE_TABS (s); | |
13696 | ||
13697 | my_getExpression (&imm_expr, s); | |
13698 | if (imm_expr.X_op == O_constant) | |
13699 | { | |
13700 | /* Handle the frame size. */ | |
13701 | if (seen_framesz) | |
13702 | { | |
13703 | as_bad (_("more than one frame size in list")); | |
13704 | break; | |
13705 | } | |
13706 | seen_framesz = 1; | |
13707 | framesz = imm_expr.X_add_number; | |
13708 | imm_expr.X_op = O_absent; | |
13709 | s = expr_end; | |
13710 | continue; | |
13711 | } | |
13712 | ||
707bfff6 | 13713 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
0499d65b TS |
13714 | { |
13715 | as_bad (_("can't parse register list")); | |
13716 | break; | |
13717 | } | |
0499d65b | 13718 | |
707bfff6 TS |
13719 | while (*s == ' ') |
13720 | ++s; | |
13721 | ||
0499d65b TS |
13722 | if (*s != '-') |
13723 | reg2 = reg1; | |
13724 | else | |
13725 | { | |
13726 | ++s; | |
707bfff6 TS |
13727 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®2) |
13728 | || reg2 < reg1) | |
0499d65b TS |
13729 | { |
13730 | as_bad (_("can't parse register list")); | |
13731 | break; | |
13732 | } | |
0499d65b TS |
13733 | } |
13734 | ||
13735 | while (reg1 <= reg2) | |
13736 | { | |
13737 | if (reg1 >= 4 && reg1 <= 7) | |
13738 | { | |
3a93f742 | 13739 | if (!seen_framesz) |
0499d65b | 13740 | /* args $a0-$a3 */ |
91d6fa6a | 13741 | nargs |= 1 << (reg1 - 4); |
0499d65b TS |
13742 | else |
13743 | /* statics $a0-$a3 */ | |
13744 | statics |= 1 << (reg1 - 4); | |
13745 | } | |
13746 | else if ((reg1 >= 16 && reg1 <= 23) || reg1 == 30) | |
13747 | { | |
13748 | /* $s0-$s8 */ | |
13749 | sregs |= 1 << ((reg1 == 30) ? 8 : (reg1 - 16)); | |
13750 | } | |
13751 | else if (reg1 == 31) | |
13752 | { | |
13753 | /* Add $ra to insn. */ | |
13754 | opcode |= 0x40; | |
13755 | } | |
13756 | else | |
13757 | { | |
13758 | as_bad (_("unexpected register in list")); | |
13759 | break; | |
13760 | } | |
13761 | if (++reg1 == 24) | |
13762 | reg1 = 30; | |
13763 | } | |
13764 | } | |
13765 | ||
13766 | /* Encode args/statics combination. */ | |
91d6fa6a | 13767 | if (nargs & statics) |
0499d65b | 13768 | as_bad (_("arg/static registers overlap")); |
91d6fa6a | 13769 | else if (nargs == 0xf) |
0499d65b TS |
13770 | /* All $a0-$a3 are args. */ |
13771 | opcode |= MIPS16_ALL_ARGS << 16; | |
13772 | else if (statics == 0xf) | |
13773 | /* All $a0-$a3 are statics. */ | |
13774 | opcode |= MIPS16_ALL_STATICS << 16; | |
13775 | else | |
13776 | { | |
13777 | int narg = 0, nstat = 0; | |
13778 | ||
13779 | /* Count arg registers. */ | |
91d6fa6a | 13780 | while (nargs & 0x1) |
0499d65b | 13781 | { |
91d6fa6a | 13782 | nargs >>= 1; |
0499d65b TS |
13783 | narg++; |
13784 | } | |
91d6fa6a | 13785 | if (nargs != 0) |
0499d65b TS |
13786 | as_bad (_("invalid arg register list")); |
13787 | ||
13788 | /* Count static registers. */ | |
13789 | while (statics & 0x8) | |
13790 | { | |
13791 | statics = (statics << 1) & 0xf; | |
13792 | nstat++; | |
13793 | } | |
13794 | if (statics != 0) | |
13795 | as_bad (_("invalid static register list")); | |
13796 | ||
13797 | /* Encode args/statics. */ | |
13798 | opcode |= ((narg << 2) | nstat) << 16; | |
13799 | } | |
13800 | ||
13801 | /* Encode $s0/$s1. */ | |
13802 | if (sregs & (1 << 0)) /* $s0 */ | |
13803 | opcode |= 0x20; | |
13804 | if (sregs & (1 << 1)) /* $s1 */ | |
13805 | opcode |= 0x10; | |
13806 | sregs >>= 2; | |
13807 | ||
13808 | if (sregs != 0) | |
13809 | { | |
13810 | /* Count regs $s2-$s8. */ | |
13811 | int nsreg = 0; | |
13812 | while (sregs & 1) | |
13813 | { | |
13814 | sregs >>= 1; | |
13815 | nsreg++; | |
13816 | } | |
13817 | if (sregs != 0) | |
13818 | as_bad (_("invalid static register list")); | |
13819 | /* Encode $s2-$s8. */ | |
13820 | opcode |= nsreg << 24; | |
13821 | } | |
13822 | ||
13823 | /* Encode frame size. */ | |
13824 | if (!seen_framesz) | |
13825 | as_bad (_("missing frame size")); | |
13826 | else if ((framesz & 7) != 0 || framesz < 0 | |
13827 | || framesz > 0xff * 8) | |
13828 | as_bad (_("invalid frame size")); | |
13829 | else if (framesz != 128 || (opcode >> 16) != 0) | |
13830 | { | |
13831 | framesz /= 8; | |
13832 | opcode |= (((framesz & 0xf0) << 16) | |
13833 | | (framesz & 0x0f)); | |
13834 | } | |
13835 | ||
13836 | /* Finally build the instruction. */ | |
13837 | if ((opcode >> 16) != 0 || framesz == 0) | |
13838 | { | |
13839 | ip->use_extend = TRUE; | |
13840 | ip->extend = opcode >> 16; | |
13841 | } | |
13842 | ip->insn_opcode |= opcode & 0x7f; | |
13843 | } | |
13844 | continue; | |
13845 | ||
252b5132 RH |
13846 | case 'e': /* extend code */ |
13847 | my_getExpression (&imm_expr, s); | |
13848 | check_absolute_expr (ip, &imm_expr); | |
13849 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
13850 | { | |
13851 | as_warn (_("Invalid value for `%s' (%lu)"), | |
13852 | ip->insn_mo->name, | |
13853 | (unsigned long) imm_expr.X_add_number); | |
13854 | imm_expr.X_add_number &= 0x7ff; | |
13855 | } | |
13856 | ip->insn_opcode |= imm_expr.X_add_number; | |
13857 | imm_expr.X_op = O_absent; | |
13858 | s = expr_end; | |
13859 | continue; | |
13860 | ||
13861 | default: | |
13862 | internalError (); | |
13863 | } | |
13864 | break; | |
13865 | } | |
13866 | ||
13867 | /* Args don't match. */ | |
13868 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
13869 | strcmp (insn->name, insn[1].name) == 0) | |
13870 | { | |
13871 | ++insn; | |
13872 | s = argsstart; | |
13873 | continue; | |
13874 | } | |
13875 | ||
13876 | insn_error = _("illegal operands"); | |
13877 | ||
13878 | return; | |
13879 | } | |
13880 | } | |
13881 | ||
13882 | /* This structure holds information we know about a mips16 immediate | |
13883 | argument type. */ | |
13884 | ||
e972090a NC |
13885 | struct mips16_immed_operand |
13886 | { | |
252b5132 RH |
13887 | /* The type code used in the argument string in the opcode table. */ |
13888 | int type; | |
13889 | /* The number of bits in the short form of the opcode. */ | |
13890 | int nbits; | |
13891 | /* The number of bits in the extended form of the opcode. */ | |
13892 | int extbits; | |
13893 | /* The amount by which the short form is shifted when it is used; | |
13894 | for example, the sw instruction has a shift count of 2. */ | |
13895 | int shift; | |
13896 | /* The amount by which the short form is shifted when it is stored | |
13897 | into the instruction code. */ | |
13898 | int op_shift; | |
13899 | /* Non-zero if the short form is unsigned. */ | |
13900 | int unsp; | |
13901 | /* Non-zero if the extended form is unsigned. */ | |
13902 | int extu; | |
13903 | /* Non-zero if the value is PC relative. */ | |
13904 | int pcrel; | |
13905 | }; | |
13906 | ||
13907 | /* The mips16 immediate operand types. */ | |
13908 | ||
13909 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
13910 | { | |
13911 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
13912 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
13913 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
13914 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
13915 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
13916 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13917 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13918 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13919 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
13920 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
13921 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
13922 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
13923 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
13924 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
13925 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
13926 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
13927 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
13928 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
13929 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
13930 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
13931 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
13932 | }; | |
13933 | ||
13934 | #define MIPS16_NUM_IMMED \ | |
13935 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
13936 | ||
13937 | /* Handle a mips16 instruction with an immediate value. This or's the | |
13938 | small immediate value into *INSN. It sets *USE_EXTEND to indicate | |
13939 | whether an extended value is needed; if one is needed, it sets | |
13940 | *EXTEND to the value. The argument type is TYPE. The value is VAL. | |
13941 | If SMALL is true, an unextended opcode was explicitly requested. | |
13942 | If EXT is true, an extended opcode was explicitly requested. If | |
13943 | WARN is true, warn if EXT does not match reality. */ | |
13944 | ||
13945 | static void | |
17a2f251 TS |
13946 | mips16_immed (char *file, unsigned int line, int type, offsetT val, |
13947 | bfd_boolean warn, bfd_boolean small, bfd_boolean ext, | |
13948 | unsigned long *insn, bfd_boolean *use_extend, | |
13949 | unsigned short *extend) | |
252b5132 | 13950 | { |
3994f87e | 13951 | const struct mips16_immed_operand *op; |
252b5132 | 13952 | int mintiny, maxtiny; |
b34976b6 | 13953 | bfd_boolean needext; |
252b5132 RH |
13954 | |
13955 | op = mips16_immed_operands; | |
13956 | while (op->type != type) | |
13957 | { | |
13958 | ++op; | |
9c2799c2 | 13959 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
13960 | } |
13961 | ||
13962 | if (op->unsp) | |
13963 | { | |
13964 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
13965 | { | |
13966 | mintiny = 1; | |
13967 | maxtiny = 1 << op->nbits; | |
13968 | } | |
13969 | else | |
13970 | { | |
13971 | mintiny = 0; | |
13972 | maxtiny = (1 << op->nbits) - 1; | |
13973 | } | |
13974 | } | |
13975 | else | |
13976 | { | |
13977 | mintiny = - (1 << (op->nbits - 1)); | |
13978 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
13979 | } | |
13980 | ||
13981 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
13982 | if (type == 'p' || type == 'q') | |
13983 | val /= 2; | |
13984 | ||
13985 | if ((val & ((1 << op->shift) - 1)) != 0 | |
13986 | || val < (mintiny << op->shift) | |
13987 | || val > (maxtiny << op->shift)) | |
b34976b6 | 13988 | needext = TRUE; |
252b5132 | 13989 | else |
b34976b6 | 13990 | needext = FALSE; |
252b5132 RH |
13991 | |
13992 | if (warn && ext && ! needext) | |
beae10d5 KH |
13993 | as_warn_where (file, line, |
13994 | _("extended operand requested but not required")); | |
252b5132 RH |
13995 | if (small && needext) |
13996 | as_bad_where (file, line, _("invalid unextended operand value")); | |
13997 | ||
13998 | if (small || (! ext && ! needext)) | |
13999 | { | |
14000 | int insnval; | |
14001 | ||
b34976b6 | 14002 | *use_extend = FALSE; |
252b5132 RH |
14003 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); |
14004 | insnval <<= op->op_shift; | |
14005 | *insn |= insnval; | |
14006 | } | |
14007 | else | |
14008 | { | |
14009 | long minext, maxext; | |
14010 | int extval; | |
14011 | ||
14012 | if (op->extu) | |
14013 | { | |
14014 | minext = 0; | |
14015 | maxext = (1 << op->extbits) - 1; | |
14016 | } | |
14017 | else | |
14018 | { | |
14019 | minext = - (1 << (op->extbits - 1)); | |
14020 | maxext = (1 << (op->extbits - 1)) - 1; | |
14021 | } | |
14022 | if (val < minext || val > maxext) | |
14023 | as_bad_where (file, line, | |
14024 | _("operand value out of range for instruction")); | |
14025 | ||
b34976b6 | 14026 | *use_extend = TRUE; |
252b5132 RH |
14027 | if (op->extbits == 16) |
14028 | { | |
14029 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
14030 | val &= 0x1f; | |
14031 | } | |
14032 | else if (op->extbits == 15) | |
14033 | { | |
14034 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
14035 | val &= 0xf; | |
14036 | } | |
14037 | else | |
14038 | { | |
14039 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
14040 | val = 0; | |
14041 | } | |
14042 | ||
14043 | *extend = (unsigned short) extval; | |
14044 | *insn |= val; | |
14045 | } | |
14046 | } | |
14047 | \f | |
d6f16593 | 14048 | struct percent_op_match |
ad8d3bb3 | 14049 | { |
5e0116d5 RS |
14050 | const char *str; |
14051 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
14052 | }; |
14053 | ||
14054 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 14055 | { |
5e0116d5 | 14056 | {"%lo", BFD_RELOC_LO16}, |
ad8d3bb3 | 14057 | #ifdef OBJ_ELF |
5e0116d5 RS |
14058 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
14059 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
14060 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
14061 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
14062 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
14063 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
14064 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
14065 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
14066 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
14067 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
14068 | {"%half", BFD_RELOC_16}, | |
14069 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
14070 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
14071 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
14072 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
14073 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
14074 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
14075 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
14076 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
14077 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
14078 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
ad8d3bb3 | 14079 | #endif |
5e0116d5 | 14080 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
14081 | }; |
14082 | ||
d6f16593 MR |
14083 | static const struct percent_op_match mips16_percent_op[] = |
14084 | { | |
14085 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
14086 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
738e5348 RS |
14087 | {"%got", BFD_RELOC_MIPS16_GOT16}, |
14088 | {"%call16", BFD_RELOC_MIPS16_CALL16}, | |
d0f13682 CLT |
14089 | {"%hi", BFD_RELOC_MIPS16_HI16_S}, |
14090 | {"%tlsgd", BFD_RELOC_MIPS16_TLS_GD}, | |
14091 | {"%tlsldm", BFD_RELOC_MIPS16_TLS_LDM}, | |
14092 | {"%dtprel_hi", BFD_RELOC_MIPS16_TLS_DTPREL_HI16}, | |
14093 | {"%dtprel_lo", BFD_RELOC_MIPS16_TLS_DTPREL_LO16}, | |
14094 | {"%tprel_hi", BFD_RELOC_MIPS16_TLS_TPREL_HI16}, | |
14095 | {"%tprel_lo", BFD_RELOC_MIPS16_TLS_TPREL_LO16}, | |
14096 | {"%gottprel", BFD_RELOC_MIPS16_TLS_GOTTPREL} | |
d6f16593 MR |
14097 | }; |
14098 | ||
252b5132 | 14099 | |
5e0116d5 RS |
14100 | /* Return true if *STR points to a relocation operator. When returning true, |
14101 | move *STR over the operator and store its relocation code in *RELOC. | |
14102 | Leave both *STR and *RELOC alone when returning false. */ | |
14103 | ||
14104 | static bfd_boolean | |
17a2f251 | 14105 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 14106 | { |
d6f16593 MR |
14107 | const struct percent_op_match *percent_op; |
14108 | size_t limit, i; | |
14109 | ||
14110 | if (mips_opts.mips16) | |
14111 | { | |
14112 | percent_op = mips16_percent_op; | |
14113 | limit = ARRAY_SIZE (mips16_percent_op); | |
14114 | } | |
14115 | else | |
14116 | { | |
14117 | percent_op = mips_percent_op; | |
14118 | limit = ARRAY_SIZE (mips_percent_op); | |
14119 | } | |
76b3015f | 14120 | |
d6f16593 | 14121 | for (i = 0; i < limit; i++) |
5e0116d5 | 14122 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 14123 | { |
3f98094e DJ |
14124 | int len = strlen (percent_op[i].str); |
14125 | ||
14126 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
14127 | continue; | |
14128 | ||
5e0116d5 RS |
14129 | *str += strlen (percent_op[i].str); |
14130 | *reloc = percent_op[i].reloc; | |
394f9b3a | 14131 | |
5e0116d5 RS |
14132 | /* Check whether the output BFD supports this relocation. |
14133 | If not, issue an error and fall back on something safe. */ | |
14134 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 14135 | { |
20203fb9 | 14136 | as_bad (_("relocation %s isn't supported by the current ABI"), |
5e0116d5 | 14137 | percent_op[i].str); |
01a3f561 | 14138 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 14139 | } |
5e0116d5 | 14140 | return TRUE; |
394f9b3a | 14141 | } |
5e0116d5 | 14142 | return FALSE; |
394f9b3a | 14143 | } |
ad8d3bb3 | 14144 | |
ad8d3bb3 | 14145 | |
5e0116d5 RS |
14146 | /* Parse string STR as a 16-bit relocatable operand. Store the |
14147 | expression in *EP and the relocations in the array starting | |
14148 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 14149 | |
01a3f561 | 14150 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 14151 | |
5e0116d5 | 14152 | static size_t |
17a2f251 TS |
14153 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
14154 | char *str) | |
ad8d3bb3 | 14155 | { |
5e0116d5 RS |
14156 | bfd_reloc_code_real_type reversed_reloc[3]; |
14157 | size_t reloc_index, i; | |
09b8f35a RS |
14158 | int crux_depth, str_depth; |
14159 | char *crux; | |
5e0116d5 RS |
14160 | |
14161 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
14162 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
14163 | of the main expression and with CRUX_DEPTH containing the number | |
14164 | of open brackets at that point. */ | |
14165 | reloc_index = -1; | |
14166 | str_depth = 0; | |
14167 | do | |
fb1b3232 | 14168 | { |
09b8f35a RS |
14169 | reloc_index++; |
14170 | crux = str; | |
14171 | crux_depth = str_depth; | |
14172 | ||
14173 | /* Skip over whitespace and brackets, keeping count of the number | |
14174 | of brackets. */ | |
14175 | while (*str == ' ' || *str == '\t' || *str == '(') | |
14176 | if (*str++ == '(') | |
14177 | str_depth++; | |
5e0116d5 | 14178 | } |
09b8f35a RS |
14179 | while (*str == '%' |
14180 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
14181 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 14182 | |
09b8f35a | 14183 | my_getExpression (ep, crux); |
5e0116d5 | 14184 | str = expr_end; |
394f9b3a | 14185 | |
5e0116d5 | 14186 | /* Match every open bracket. */ |
09b8f35a | 14187 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 14188 | if (*str++ == ')') |
09b8f35a | 14189 | crux_depth--; |
394f9b3a | 14190 | |
09b8f35a | 14191 | if (crux_depth > 0) |
20203fb9 | 14192 | as_bad (_("unclosed '('")); |
394f9b3a | 14193 | |
5e0116d5 | 14194 | expr_end = str; |
252b5132 | 14195 | |
01a3f561 | 14196 | if (reloc_index != 0) |
64bdfcaf RS |
14197 | { |
14198 | prev_reloc_op_frag = frag_now; | |
14199 | for (i = 0; i < reloc_index; i++) | |
14200 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
14201 | } | |
fb1b3232 | 14202 | |
5e0116d5 | 14203 | return reloc_index; |
252b5132 RH |
14204 | } |
14205 | ||
14206 | static void | |
17a2f251 | 14207 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
14208 | { |
14209 | char *save_in; | |
14210 | ||
14211 | save_in = input_line_pointer; | |
14212 | input_line_pointer = str; | |
14213 | expression (ep); | |
14214 | expr_end = input_line_pointer; | |
14215 | input_line_pointer = save_in; | |
252b5132 RH |
14216 | } |
14217 | ||
252b5132 | 14218 | char * |
17a2f251 | 14219 | md_atof (int type, char *litP, int *sizeP) |
252b5132 | 14220 | { |
499ac353 | 14221 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
252b5132 RH |
14222 | } |
14223 | ||
14224 | void | |
17a2f251 | 14225 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
14226 | { |
14227 | if (target_big_endian) | |
14228 | number_to_chars_bigendian (buf, val, n); | |
14229 | else | |
14230 | number_to_chars_littleendian (buf, val, n); | |
14231 | } | |
14232 | \f | |
ae948b86 | 14233 | #ifdef OBJ_ELF |
e013f690 TS |
14234 | static int support_64bit_objects(void) |
14235 | { | |
14236 | const char **list, **l; | |
aa3d8fdf | 14237 | int yes; |
e013f690 TS |
14238 | |
14239 | list = bfd_target_list (); | |
14240 | for (l = list; *l != NULL; l++) | |
aeffff67 RS |
14241 | if (strcmp (*l, ELF_TARGET ("elf64-", "big")) == 0 |
14242 | || strcmp (*l, ELF_TARGET ("elf64-", "little")) == 0) | |
e013f690 | 14243 | break; |
aa3d8fdf | 14244 | yes = (*l != NULL); |
e013f690 | 14245 | free (list); |
aa3d8fdf | 14246 | return yes; |
e013f690 | 14247 | } |
ae948b86 | 14248 | #endif /* OBJ_ELF */ |
e013f690 | 14249 | |
78849248 | 14250 | const char *md_shortopts = "O::g::G:"; |
252b5132 | 14251 | |
23fce1e3 NC |
14252 | enum options |
14253 | { | |
14254 | OPTION_MARCH = OPTION_MD_BASE, | |
14255 | OPTION_MTUNE, | |
14256 | OPTION_MIPS1, | |
14257 | OPTION_MIPS2, | |
14258 | OPTION_MIPS3, | |
14259 | OPTION_MIPS4, | |
14260 | OPTION_MIPS5, | |
14261 | OPTION_MIPS32, | |
14262 | OPTION_MIPS64, | |
14263 | OPTION_MIPS32R2, | |
14264 | OPTION_MIPS64R2, | |
14265 | OPTION_MIPS16, | |
14266 | OPTION_NO_MIPS16, | |
14267 | OPTION_MIPS3D, | |
14268 | OPTION_NO_MIPS3D, | |
14269 | OPTION_MDMX, | |
14270 | OPTION_NO_MDMX, | |
14271 | OPTION_DSP, | |
14272 | OPTION_NO_DSP, | |
14273 | OPTION_MT, | |
14274 | OPTION_NO_MT, | |
14275 | OPTION_SMARTMIPS, | |
14276 | OPTION_NO_SMARTMIPS, | |
14277 | OPTION_DSPR2, | |
14278 | OPTION_NO_DSPR2, | |
df58fc94 RS |
14279 | OPTION_MICROMIPS, |
14280 | OPTION_NO_MICROMIPS, | |
dec0624d MR |
14281 | OPTION_MCU, |
14282 | OPTION_NO_MCU, | |
23fce1e3 NC |
14283 | OPTION_COMPAT_ARCH_BASE, |
14284 | OPTION_M4650, | |
14285 | OPTION_NO_M4650, | |
14286 | OPTION_M4010, | |
14287 | OPTION_NO_M4010, | |
14288 | OPTION_M4100, | |
14289 | OPTION_NO_M4100, | |
14290 | OPTION_M3900, | |
14291 | OPTION_NO_M3900, | |
14292 | OPTION_M7000_HILO_FIX, | |
6a32d874 CM |
14293 | OPTION_MNO_7000_HILO_FIX, |
14294 | OPTION_FIX_24K, | |
14295 | OPTION_NO_FIX_24K, | |
c67a084a NC |
14296 | OPTION_FIX_LOONGSON2F_JUMP, |
14297 | OPTION_NO_FIX_LOONGSON2F_JUMP, | |
14298 | OPTION_FIX_LOONGSON2F_NOP, | |
14299 | OPTION_NO_FIX_LOONGSON2F_NOP, | |
23fce1e3 NC |
14300 | OPTION_FIX_VR4120, |
14301 | OPTION_NO_FIX_VR4120, | |
14302 | OPTION_FIX_VR4130, | |
14303 | OPTION_NO_FIX_VR4130, | |
d954098f DD |
14304 | OPTION_FIX_CN63XXP1, |
14305 | OPTION_NO_FIX_CN63XXP1, | |
23fce1e3 NC |
14306 | OPTION_TRAP, |
14307 | OPTION_BREAK, | |
14308 | OPTION_EB, | |
14309 | OPTION_EL, | |
14310 | OPTION_FP32, | |
14311 | OPTION_GP32, | |
14312 | OPTION_CONSTRUCT_FLOATS, | |
14313 | OPTION_NO_CONSTRUCT_FLOATS, | |
14314 | OPTION_FP64, | |
14315 | OPTION_GP64, | |
14316 | OPTION_RELAX_BRANCH, | |
14317 | OPTION_NO_RELAX_BRANCH, | |
14318 | OPTION_MSHARED, | |
14319 | OPTION_MNO_SHARED, | |
14320 | OPTION_MSYM32, | |
14321 | OPTION_MNO_SYM32, | |
14322 | OPTION_SOFT_FLOAT, | |
14323 | OPTION_HARD_FLOAT, | |
14324 | OPTION_SINGLE_FLOAT, | |
14325 | OPTION_DOUBLE_FLOAT, | |
14326 | OPTION_32, | |
14327 | #ifdef OBJ_ELF | |
14328 | OPTION_CALL_SHARED, | |
14329 | OPTION_CALL_NONPIC, | |
14330 | OPTION_NON_SHARED, | |
14331 | OPTION_XGOT, | |
14332 | OPTION_MABI, | |
14333 | OPTION_N32, | |
14334 | OPTION_64, | |
14335 | OPTION_MDEBUG, | |
14336 | OPTION_NO_MDEBUG, | |
14337 | OPTION_PDR, | |
14338 | OPTION_NO_PDR, | |
14339 | OPTION_MVXWORKS_PIC, | |
14340 | #endif /* OBJ_ELF */ | |
14341 | OPTION_END_OF_ENUM | |
14342 | }; | |
14343 | ||
e972090a NC |
14344 | struct option md_longopts[] = |
14345 | { | |
f9b4148d | 14346 | /* Options which specify architecture. */ |
f9b4148d | 14347 | {"march", required_argument, NULL, OPTION_MARCH}, |
f9b4148d | 14348 | {"mtune", required_argument, NULL, OPTION_MTUNE}, |
252b5132 RH |
14349 | {"mips0", no_argument, NULL, OPTION_MIPS1}, |
14350 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
252b5132 | 14351 | {"mips2", no_argument, NULL, OPTION_MIPS2}, |
252b5132 | 14352 | {"mips3", no_argument, NULL, OPTION_MIPS3}, |
252b5132 | 14353 | {"mips4", no_argument, NULL, OPTION_MIPS4}, |
ae948b86 | 14354 | {"mips5", no_argument, NULL, OPTION_MIPS5}, |
ae948b86 | 14355 | {"mips32", no_argument, NULL, OPTION_MIPS32}, |
ae948b86 | 14356 | {"mips64", no_argument, NULL, OPTION_MIPS64}, |
f9b4148d | 14357 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, |
5f74bc13 | 14358 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, |
f9b4148d CD |
14359 | |
14360 | /* Options which specify Application Specific Extensions (ASEs). */ | |
f9b4148d | 14361 | {"mips16", no_argument, NULL, OPTION_MIPS16}, |
f9b4148d | 14362 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, |
f9b4148d | 14363 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, |
f9b4148d | 14364 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, |
f9b4148d | 14365 | {"mdmx", no_argument, NULL, OPTION_MDMX}, |
f9b4148d | 14366 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, |
74cd071d | 14367 | {"mdsp", no_argument, NULL, OPTION_DSP}, |
74cd071d | 14368 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, |
ef2e4d86 | 14369 | {"mmt", no_argument, NULL, OPTION_MT}, |
ef2e4d86 | 14370 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, |
e16bfa71 | 14371 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, |
e16bfa71 | 14372 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, |
8b082fb1 | 14373 | {"mdspr2", no_argument, NULL, OPTION_DSPR2}, |
8b082fb1 | 14374 | {"mno-dspr2", no_argument, NULL, OPTION_NO_DSPR2}, |
df58fc94 RS |
14375 | {"mmicromips", no_argument, NULL, OPTION_MICROMIPS}, |
14376 | {"mno-micromips", no_argument, NULL, OPTION_NO_MICROMIPS}, | |
dec0624d MR |
14377 | {"mmcu", no_argument, NULL, OPTION_MCU}, |
14378 | {"mno-mcu", no_argument, NULL, OPTION_NO_MCU}, | |
f9b4148d CD |
14379 | |
14380 | /* Old-style architecture options. Don't add more of these. */ | |
f9b4148d | 14381 | {"m4650", no_argument, NULL, OPTION_M4650}, |
f9b4148d | 14382 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, |
f9b4148d | 14383 | {"m4010", no_argument, NULL, OPTION_M4010}, |
f9b4148d | 14384 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, |
f9b4148d | 14385 | {"m4100", no_argument, NULL, OPTION_M4100}, |
f9b4148d | 14386 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, |
f9b4148d | 14387 | {"m3900", no_argument, NULL, OPTION_M3900}, |
f9b4148d CD |
14388 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, |
14389 | ||
14390 | /* Options which enable bug fixes. */ | |
f9b4148d | 14391 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, |
f9b4148d CD |
14392 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, |
14393 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
c67a084a NC |
14394 | {"mfix-loongson2f-jump", no_argument, NULL, OPTION_FIX_LOONGSON2F_JUMP}, |
14395 | {"mno-fix-loongson2f-jump", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_JUMP}, | |
14396 | {"mfix-loongson2f-nop", no_argument, NULL, OPTION_FIX_LOONGSON2F_NOP}, | |
14397 | {"mno-fix-loongson2f-nop", no_argument, NULL, OPTION_NO_FIX_LOONGSON2F_NOP}, | |
d766e8ec RS |
14398 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, |
14399 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
7d8e00cf RS |
14400 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, |
14401 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
6a32d874 CM |
14402 | {"mfix-24k", no_argument, NULL, OPTION_FIX_24K}, |
14403 | {"mno-fix-24k", no_argument, NULL, OPTION_NO_FIX_24K}, | |
d954098f DD |
14404 | {"mfix-cn63xxp1", no_argument, NULL, OPTION_FIX_CN63XXP1}, |
14405 | {"mno-fix-cn63xxp1", no_argument, NULL, OPTION_NO_FIX_CN63XXP1}, | |
f9b4148d CD |
14406 | |
14407 | /* Miscellaneous options. */ | |
252b5132 RH |
14408 | {"trap", no_argument, NULL, OPTION_TRAP}, |
14409 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
252b5132 RH |
14410 | {"break", no_argument, NULL, OPTION_BREAK}, |
14411 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
252b5132 | 14412 | {"EB", no_argument, NULL, OPTION_EB}, |
252b5132 | 14413 | {"EL", no_argument, NULL, OPTION_EL}, |
ae948b86 | 14414 | {"mfp32", no_argument, NULL, OPTION_FP32}, |
c97ef257 | 14415 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
119d663a | 14416 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
119d663a | 14417 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
316f5878 | 14418 | {"mfp64", no_argument, NULL, OPTION_FP64}, |
ae948b86 | 14419 | {"mgp64", no_argument, NULL, OPTION_GP64}, |
4a6a3df4 AO |
14420 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, |
14421 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
aa6975fb ILT |
14422 | {"mshared", no_argument, NULL, OPTION_MSHARED}, |
14423 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
aed1a261 RS |
14424 | {"msym32", no_argument, NULL, OPTION_MSYM32}, |
14425 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
037b32b9 AN |
14426 | {"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT}, |
14427 | {"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT}, | |
037b32b9 AN |
14428 | {"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT}, |
14429 | {"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT}, | |
23fce1e3 NC |
14430 | |
14431 | /* Strictly speaking this next option is ELF specific, | |
14432 | but we allow it for other ports as well in order to | |
14433 | make testing easier. */ | |
14434 | {"32", no_argument, NULL, OPTION_32}, | |
037b32b9 | 14435 | |
f9b4148d | 14436 | /* ELF-specific options. */ |
156c2f8b | 14437 | #ifdef OBJ_ELF |
156c2f8b NC |
14438 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
14439 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
861fb55a | 14440 | {"call_nonpic", no_argument, NULL, OPTION_CALL_NONPIC}, |
156c2f8b NC |
14441 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
14442 | {"xgot", no_argument, NULL, OPTION_XGOT}, | |
ae948b86 | 14443 | {"mabi", required_argument, NULL, OPTION_MABI}, |
e013f690 | 14444 | {"n32", no_argument, NULL, OPTION_N32}, |
156c2f8b | 14445 | {"64", no_argument, NULL, OPTION_64}, |
ecb4347a | 14446 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, |
ecb4347a | 14447 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, |
dcd410fe | 14448 | {"mpdr", no_argument, NULL, OPTION_PDR}, |
dcd410fe | 14449 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, |
0a44bf69 | 14450 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, |
ae948b86 | 14451 | #endif /* OBJ_ELF */ |
f9b4148d | 14452 | |
252b5132 RH |
14453 | {NULL, no_argument, NULL, 0} |
14454 | }; | |
156c2f8b | 14455 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 14456 | |
316f5878 RS |
14457 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
14458 | NEW_VALUE. Warn if another value was already specified. Note: | |
14459 | we have to defer parsing the -march and -mtune arguments in order | |
14460 | to handle 'from-abi' correctly, since the ABI might be specified | |
14461 | in a later argument. */ | |
14462 | ||
14463 | static void | |
17a2f251 | 14464 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
14465 | { |
14466 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
14467 | as_warn (_("A different %s was already specified, is now %s"), | |
14468 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
14469 | new_value); | |
14470 | ||
14471 | *string_ptr = new_value; | |
14472 | } | |
14473 | ||
252b5132 | 14474 | int |
17a2f251 | 14475 | md_parse_option (int c, char *arg) |
252b5132 RH |
14476 | { |
14477 | switch (c) | |
14478 | { | |
119d663a NC |
14479 | case OPTION_CONSTRUCT_FLOATS: |
14480 | mips_disable_float_construction = 0; | |
14481 | break; | |
bdaaa2e1 | 14482 | |
119d663a NC |
14483 | case OPTION_NO_CONSTRUCT_FLOATS: |
14484 | mips_disable_float_construction = 1; | |
14485 | break; | |
bdaaa2e1 | 14486 | |
252b5132 RH |
14487 | case OPTION_TRAP: |
14488 | mips_trap = 1; | |
14489 | break; | |
14490 | ||
14491 | case OPTION_BREAK: | |
14492 | mips_trap = 0; | |
14493 | break; | |
14494 | ||
14495 | case OPTION_EB: | |
14496 | target_big_endian = 1; | |
14497 | break; | |
14498 | ||
14499 | case OPTION_EL: | |
14500 | target_big_endian = 0; | |
14501 | break; | |
14502 | ||
14503 | case 'O': | |
4ffff32f TS |
14504 | if (arg == NULL) |
14505 | mips_optimize = 1; | |
14506 | else if (arg[0] == '0') | |
14507 | mips_optimize = 0; | |
14508 | else if (arg[0] == '1') | |
252b5132 RH |
14509 | mips_optimize = 1; |
14510 | else | |
14511 | mips_optimize = 2; | |
14512 | break; | |
14513 | ||
14514 | case 'g': | |
14515 | if (arg == NULL) | |
14516 | mips_debug = 2; | |
14517 | else | |
14518 | mips_debug = atoi (arg); | |
252b5132 RH |
14519 | break; |
14520 | ||
14521 | case OPTION_MIPS1: | |
316f5878 | 14522 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
14523 | break; |
14524 | ||
14525 | case OPTION_MIPS2: | |
316f5878 | 14526 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
14527 | break; |
14528 | ||
14529 | case OPTION_MIPS3: | |
316f5878 | 14530 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
14531 | break; |
14532 | ||
14533 | case OPTION_MIPS4: | |
316f5878 | 14534 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
14535 | break; |
14536 | ||
84ea6cf2 | 14537 | case OPTION_MIPS5: |
316f5878 | 14538 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
14539 | break; |
14540 | ||
e7af610e | 14541 | case OPTION_MIPS32: |
316f5878 | 14542 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
14543 | break; |
14544 | ||
af7ee8bf CD |
14545 | case OPTION_MIPS32R2: |
14546 | file_mips_isa = ISA_MIPS32R2; | |
14547 | break; | |
14548 | ||
5f74bc13 CD |
14549 | case OPTION_MIPS64R2: |
14550 | file_mips_isa = ISA_MIPS64R2; | |
14551 | break; | |
14552 | ||
84ea6cf2 | 14553 | case OPTION_MIPS64: |
316f5878 | 14554 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
14555 | break; |
14556 | ||
ec68c924 | 14557 | case OPTION_MTUNE: |
316f5878 RS |
14558 | mips_set_option_string (&mips_tune_string, arg); |
14559 | break; | |
ec68c924 | 14560 | |
316f5878 RS |
14561 | case OPTION_MARCH: |
14562 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
14563 | break; |
14564 | ||
14565 | case OPTION_M4650: | |
316f5878 RS |
14566 | mips_set_option_string (&mips_arch_string, "4650"); |
14567 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
14568 | break; |
14569 | ||
14570 | case OPTION_NO_M4650: | |
14571 | break; | |
14572 | ||
14573 | case OPTION_M4010: | |
316f5878 RS |
14574 | mips_set_option_string (&mips_arch_string, "4010"); |
14575 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
14576 | break; |
14577 | ||
14578 | case OPTION_NO_M4010: | |
14579 | break; | |
14580 | ||
14581 | case OPTION_M4100: | |
316f5878 RS |
14582 | mips_set_option_string (&mips_arch_string, "4100"); |
14583 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
14584 | break; |
14585 | ||
14586 | case OPTION_NO_M4100: | |
14587 | break; | |
14588 | ||
252b5132 | 14589 | case OPTION_M3900: |
316f5878 RS |
14590 | mips_set_option_string (&mips_arch_string, "3900"); |
14591 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 14592 | break; |
bdaaa2e1 | 14593 | |
252b5132 RH |
14594 | case OPTION_NO_M3900: |
14595 | break; | |
14596 | ||
deec1734 CD |
14597 | case OPTION_MDMX: |
14598 | mips_opts.ase_mdmx = 1; | |
14599 | break; | |
14600 | ||
14601 | case OPTION_NO_MDMX: | |
14602 | mips_opts.ase_mdmx = 0; | |
14603 | break; | |
14604 | ||
74cd071d CF |
14605 | case OPTION_DSP: |
14606 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 14607 | mips_opts.ase_dspr2 = 0; |
74cd071d CF |
14608 | break; |
14609 | ||
14610 | case OPTION_NO_DSP: | |
8b082fb1 TS |
14611 | mips_opts.ase_dsp = 0; |
14612 | mips_opts.ase_dspr2 = 0; | |
14613 | break; | |
14614 | ||
14615 | case OPTION_DSPR2: | |
14616 | mips_opts.ase_dspr2 = 1; | |
14617 | mips_opts.ase_dsp = 1; | |
14618 | break; | |
14619 | ||
14620 | case OPTION_NO_DSPR2: | |
14621 | mips_opts.ase_dspr2 = 0; | |
74cd071d CF |
14622 | mips_opts.ase_dsp = 0; |
14623 | break; | |
14624 | ||
ef2e4d86 CF |
14625 | case OPTION_MT: |
14626 | mips_opts.ase_mt = 1; | |
14627 | break; | |
14628 | ||
14629 | case OPTION_NO_MT: | |
14630 | mips_opts.ase_mt = 0; | |
14631 | break; | |
14632 | ||
dec0624d MR |
14633 | case OPTION_MCU: |
14634 | mips_opts.ase_mcu = 1; | |
14635 | break; | |
14636 | ||
14637 | case OPTION_NO_MCU: | |
14638 | mips_opts.ase_mcu = 0; | |
14639 | break; | |
14640 | ||
df58fc94 RS |
14641 | case OPTION_MICROMIPS: |
14642 | if (mips_opts.mips16 == 1) | |
14643 | { | |
14644 | as_bad (_("-mmicromips cannot be used with -mips16")); | |
14645 | return 0; | |
14646 | } | |
14647 | mips_opts.micromips = 1; | |
14648 | mips_no_prev_insn (); | |
14649 | break; | |
14650 | ||
14651 | case OPTION_NO_MICROMIPS: | |
14652 | mips_opts.micromips = 0; | |
14653 | mips_no_prev_insn (); | |
14654 | break; | |
14655 | ||
252b5132 | 14656 | case OPTION_MIPS16: |
df58fc94 RS |
14657 | if (mips_opts.micromips == 1) |
14658 | { | |
14659 | as_bad (_("-mips16 cannot be used with -micromips")); | |
14660 | return 0; | |
14661 | } | |
252b5132 | 14662 | mips_opts.mips16 = 1; |
7d10b47d | 14663 | mips_no_prev_insn (); |
252b5132 RH |
14664 | break; |
14665 | ||
14666 | case OPTION_NO_MIPS16: | |
14667 | mips_opts.mips16 = 0; | |
7d10b47d | 14668 | mips_no_prev_insn (); |
252b5132 RH |
14669 | break; |
14670 | ||
1f25f5d3 CD |
14671 | case OPTION_MIPS3D: |
14672 | mips_opts.ase_mips3d = 1; | |
14673 | break; | |
14674 | ||
14675 | case OPTION_NO_MIPS3D: | |
14676 | mips_opts.ase_mips3d = 0; | |
14677 | break; | |
14678 | ||
e16bfa71 TS |
14679 | case OPTION_SMARTMIPS: |
14680 | mips_opts.ase_smartmips = 1; | |
14681 | break; | |
14682 | ||
14683 | case OPTION_NO_SMARTMIPS: | |
14684 | mips_opts.ase_smartmips = 0; | |
14685 | break; | |
14686 | ||
6a32d874 CM |
14687 | case OPTION_FIX_24K: |
14688 | mips_fix_24k = 1; | |
14689 | break; | |
14690 | ||
14691 | case OPTION_NO_FIX_24K: | |
14692 | mips_fix_24k = 0; | |
14693 | break; | |
14694 | ||
c67a084a NC |
14695 | case OPTION_FIX_LOONGSON2F_JUMP: |
14696 | mips_fix_loongson2f_jump = TRUE; | |
14697 | break; | |
14698 | ||
14699 | case OPTION_NO_FIX_LOONGSON2F_JUMP: | |
14700 | mips_fix_loongson2f_jump = FALSE; | |
14701 | break; | |
14702 | ||
14703 | case OPTION_FIX_LOONGSON2F_NOP: | |
14704 | mips_fix_loongson2f_nop = TRUE; | |
14705 | break; | |
14706 | ||
14707 | case OPTION_NO_FIX_LOONGSON2F_NOP: | |
14708 | mips_fix_loongson2f_nop = FALSE; | |
14709 | break; | |
14710 | ||
d766e8ec RS |
14711 | case OPTION_FIX_VR4120: |
14712 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
14713 | break; |
14714 | ||
d766e8ec RS |
14715 | case OPTION_NO_FIX_VR4120: |
14716 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
14717 | break; |
14718 | ||
7d8e00cf RS |
14719 | case OPTION_FIX_VR4130: |
14720 | mips_fix_vr4130 = 1; | |
14721 | break; | |
14722 | ||
14723 | case OPTION_NO_FIX_VR4130: | |
14724 | mips_fix_vr4130 = 0; | |
14725 | break; | |
14726 | ||
d954098f DD |
14727 | case OPTION_FIX_CN63XXP1: |
14728 | mips_fix_cn63xxp1 = TRUE; | |
14729 | break; | |
14730 | ||
14731 | case OPTION_NO_FIX_CN63XXP1: | |
14732 | mips_fix_cn63xxp1 = FALSE; | |
14733 | break; | |
14734 | ||
4a6a3df4 AO |
14735 | case OPTION_RELAX_BRANCH: |
14736 | mips_relax_branch = 1; | |
14737 | break; | |
14738 | ||
14739 | case OPTION_NO_RELAX_BRANCH: | |
14740 | mips_relax_branch = 0; | |
14741 | break; | |
14742 | ||
aa6975fb ILT |
14743 | case OPTION_MSHARED: |
14744 | mips_in_shared = TRUE; | |
14745 | break; | |
14746 | ||
14747 | case OPTION_MNO_SHARED: | |
14748 | mips_in_shared = FALSE; | |
14749 | break; | |
14750 | ||
aed1a261 RS |
14751 | case OPTION_MSYM32: |
14752 | mips_opts.sym32 = TRUE; | |
14753 | break; | |
14754 | ||
14755 | case OPTION_MNO_SYM32: | |
14756 | mips_opts.sym32 = FALSE; | |
14757 | break; | |
14758 | ||
0f074f60 | 14759 | #ifdef OBJ_ELF |
252b5132 RH |
14760 | /* When generating ELF code, we permit -KPIC and -call_shared to |
14761 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
14762 | intended to be compatible with Irix 5. */ | |
14763 | case OPTION_CALL_SHARED: | |
f43abd2b | 14764 | if (!IS_ELF) |
252b5132 RH |
14765 | { |
14766 | as_bad (_("-call_shared is supported only for ELF format")); | |
14767 | return 0; | |
14768 | } | |
14769 | mips_pic = SVR4_PIC; | |
143d77c5 | 14770 | mips_abicalls = TRUE; |
252b5132 RH |
14771 | break; |
14772 | ||
861fb55a DJ |
14773 | case OPTION_CALL_NONPIC: |
14774 | if (!IS_ELF) | |
14775 | { | |
14776 | as_bad (_("-call_nonpic is supported only for ELF format")); | |
14777 | return 0; | |
14778 | } | |
14779 | mips_pic = NO_PIC; | |
14780 | mips_abicalls = TRUE; | |
14781 | break; | |
14782 | ||
252b5132 | 14783 | case OPTION_NON_SHARED: |
f43abd2b | 14784 | if (!IS_ELF) |
252b5132 RH |
14785 | { |
14786 | as_bad (_("-non_shared is supported only for ELF format")); | |
14787 | return 0; | |
14788 | } | |
14789 | mips_pic = NO_PIC; | |
143d77c5 | 14790 | mips_abicalls = FALSE; |
252b5132 RH |
14791 | break; |
14792 | ||
44075ae2 TS |
14793 | /* The -xgot option tells the assembler to use 32 bit offsets |
14794 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
14795 | compatibility. */ |
14796 | case OPTION_XGOT: | |
14797 | mips_big_got = 1; | |
14798 | break; | |
0f074f60 | 14799 | #endif /* OBJ_ELF */ |
252b5132 RH |
14800 | |
14801 | case 'G': | |
6caf9ef4 TS |
14802 | g_switch_value = atoi (arg); |
14803 | g_switch_seen = 1; | |
252b5132 RH |
14804 | break; |
14805 | ||
34ba82a8 TS |
14806 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
14807 | and -mabi=64. */ | |
252b5132 | 14808 | case OPTION_32: |
23fce1e3 NC |
14809 | if (IS_ELF) |
14810 | mips_abi = O32_ABI; | |
14811 | /* We silently ignore -32 for non-ELF targets. This greatly | |
14812 | simplifies the construction of the MIPS GAS test cases. */ | |
252b5132 RH |
14813 | break; |
14814 | ||
23fce1e3 | 14815 | #ifdef OBJ_ELF |
e013f690 | 14816 | case OPTION_N32: |
f43abd2b | 14817 | if (!IS_ELF) |
34ba82a8 TS |
14818 | { |
14819 | as_bad (_("-n32 is supported for ELF format only")); | |
14820 | return 0; | |
14821 | } | |
316f5878 | 14822 | mips_abi = N32_ABI; |
e013f690 | 14823 | break; |
252b5132 | 14824 | |
e013f690 | 14825 | case OPTION_64: |
f43abd2b | 14826 | if (!IS_ELF) |
34ba82a8 TS |
14827 | { |
14828 | as_bad (_("-64 is supported for ELF format only")); | |
14829 | return 0; | |
14830 | } | |
316f5878 | 14831 | mips_abi = N64_ABI; |
f43abd2b | 14832 | if (!support_64bit_objects()) |
e013f690 | 14833 | as_fatal (_("No compiled in support for 64 bit object file format")); |
252b5132 | 14834 | break; |
ae948b86 | 14835 | #endif /* OBJ_ELF */ |
252b5132 | 14836 | |
c97ef257 | 14837 | case OPTION_GP32: |
a325df1d | 14838 | file_mips_gp32 = 1; |
c97ef257 AH |
14839 | break; |
14840 | ||
14841 | case OPTION_GP64: | |
a325df1d | 14842 | file_mips_gp32 = 0; |
c97ef257 | 14843 | break; |
252b5132 | 14844 | |
ca4e0257 | 14845 | case OPTION_FP32: |
a325df1d | 14846 | file_mips_fp32 = 1; |
316f5878 RS |
14847 | break; |
14848 | ||
14849 | case OPTION_FP64: | |
14850 | file_mips_fp32 = 0; | |
ca4e0257 RS |
14851 | break; |
14852 | ||
037b32b9 AN |
14853 | case OPTION_SINGLE_FLOAT: |
14854 | file_mips_single_float = 1; | |
14855 | break; | |
14856 | ||
14857 | case OPTION_DOUBLE_FLOAT: | |
14858 | file_mips_single_float = 0; | |
14859 | break; | |
14860 | ||
14861 | case OPTION_SOFT_FLOAT: | |
14862 | file_mips_soft_float = 1; | |
14863 | break; | |
14864 | ||
14865 | case OPTION_HARD_FLOAT: | |
14866 | file_mips_soft_float = 0; | |
14867 | break; | |
14868 | ||
ae948b86 | 14869 | #ifdef OBJ_ELF |
252b5132 | 14870 | case OPTION_MABI: |
f43abd2b | 14871 | if (!IS_ELF) |
34ba82a8 TS |
14872 | { |
14873 | as_bad (_("-mabi is supported for ELF format only")); | |
14874 | return 0; | |
14875 | } | |
e013f690 | 14876 | if (strcmp (arg, "32") == 0) |
316f5878 | 14877 | mips_abi = O32_ABI; |
e013f690 | 14878 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 14879 | mips_abi = O64_ABI; |
e013f690 | 14880 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 14881 | mips_abi = N32_ABI; |
e013f690 TS |
14882 | else if (strcmp (arg, "64") == 0) |
14883 | { | |
316f5878 | 14884 | mips_abi = N64_ABI; |
e013f690 TS |
14885 | if (! support_64bit_objects()) |
14886 | as_fatal (_("No compiled in support for 64 bit object file " | |
14887 | "format")); | |
14888 | } | |
14889 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 14890 | mips_abi = EABI_ABI; |
e013f690 | 14891 | else |
da0e507f TS |
14892 | { |
14893 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
14894 | return 0; | |
14895 | } | |
252b5132 | 14896 | break; |
e013f690 | 14897 | #endif /* OBJ_ELF */ |
252b5132 | 14898 | |
6b76fefe | 14899 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 14900 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
14901 | break; |
14902 | ||
9ee72ff1 | 14903 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 14904 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
14905 | break; |
14906 | ||
ecb4347a DJ |
14907 | #ifdef OBJ_ELF |
14908 | case OPTION_MDEBUG: | |
b34976b6 | 14909 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
14910 | break; |
14911 | ||
14912 | case OPTION_NO_MDEBUG: | |
b34976b6 | 14913 | mips_flag_mdebug = FALSE; |
ecb4347a | 14914 | break; |
dcd410fe RO |
14915 | |
14916 | case OPTION_PDR: | |
14917 | mips_flag_pdr = TRUE; | |
14918 | break; | |
14919 | ||
14920 | case OPTION_NO_PDR: | |
14921 | mips_flag_pdr = FALSE; | |
14922 | break; | |
0a44bf69 RS |
14923 | |
14924 | case OPTION_MVXWORKS_PIC: | |
14925 | mips_pic = VXWORKS_PIC; | |
14926 | break; | |
ecb4347a DJ |
14927 | #endif /* OBJ_ELF */ |
14928 | ||
252b5132 RH |
14929 | default: |
14930 | return 0; | |
14931 | } | |
14932 | ||
c67a084a NC |
14933 | mips_fix_loongson2f = mips_fix_loongson2f_nop || mips_fix_loongson2f_jump; |
14934 | ||
252b5132 RH |
14935 | return 1; |
14936 | } | |
316f5878 RS |
14937 | \f |
14938 | /* Set up globals to generate code for the ISA or processor | |
14939 | described by INFO. */ | |
252b5132 | 14940 | |
252b5132 | 14941 | static void |
17a2f251 | 14942 | mips_set_architecture (const struct mips_cpu_info *info) |
252b5132 | 14943 | { |
316f5878 | 14944 | if (info != 0) |
252b5132 | 14945 | { |
fef14a42 TS |
14946 | file_mips_arch = info->cpu; |
14947 | mips_opts.arch = info->cpu; | |
316f5878 | 14948 | mips_opts.isa = info->isa; |
252b5132 | 14949 | } |
252b5132 RH |
14950 | } |
14951 | ||
252b5132 | 14952 | |
316f5878 | 14953 | /* Likewise for tuning. */ |
252b5132 | 14954 | |
316f5878 | 14955 | static void |
17a2f251 | 14956 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
14957 | { |
14958 | if (info != 0) | |
fef14a42 | 14959 | mips_tune = info->cpu; |
316f5878 | 14960 | } |
80cc45a5 | 14961 | |
34ba82a8 | 14962 | |
252b5132 | 14963 | void |
17a2f251 | 14964 | mips_after_parse_args (void) |
e9670677 | 14965 | { |
fef14a42 TS |
14966 | const struct mips_cpu_info *arch_info = 0; |
14967 | const struct mips_cpu_info *tune_info = 0; | |
14968 | ||
e9670677 | 14969 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 14970 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 14971 | { |
6caf9ef4 | 14972 | if (g_switch_seen && g_switch_value != 0) |
e9670677 MR |
14973 | as_bad (_("-G not supported in this configuration.")); |
14974 | g_switch_value = 0; | |
14975 | } | |
14976 | ||
cac012d6 AO |
14977 | if (mips_abi == NO_ABI) |
14978 | mips_abi = MIPS_DEFAULT_ABI; | |
14979 | ||
22923709 RS |
14980 | /* The following code determines the architecture and register size. |
14981 | Similar code was added to GCC 3.3 (see override_options() in | |
14982 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
14983 | as much as possible. */ | |
e9670677 | 14984 | |
316f5878 | 14985 | if (mips_arch_string != 0) |
fef14a42 | 14986 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 14987 | |
316f5878 | 14988 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 14989 | { |
316f5878 | 14990 | /* Handle -mipsN. At this point, file_mips_isa contains the |
fef14a42 | 14991 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 14992 | the -march selection (if any). */ |
fef14a42 | 14993 | if (arch_info != 0) |
e9670677 | 14994 | { |
316f5878 RS |
14995 | /* -march takes precedence over -mipsN, since it is more descriptive. |
14996 | There's no harm in specifying both as long as the ISA levels | |
14997 | are the same. */ | |
fef14a42 | 14998 | if (file_mips_isa != arch_info->isa) |
316f5878 RS |
14999 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), |
15000 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
fef14a42 | 15001 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 15002 | } |
316f5878 | 15003 | else |
fef14a42 | 15004 | arch_info = mips_cpu_info_from_isa (file_mips_isa); |
e9670677 MR |
15005 | } |
15006 | ||
fef14a42 TS |
15007 | if (arch_info == 0) |
15008 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
e9670677 | 15009 | |
fef14a42 | 15010 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
20203fb9 | 15011 | as_bad (_("-march=%s is not compatible with the selected ABI"), |
fef14a42 TS |
15012 | arch_info->name); |
15013 | ||
15014 | mips_set_architecture (arch_info); | |
15015 | ||
15016 | /* Optimize for file_mips_arch, unless -mtune selects a different processor. */ | |
15017 | if (mips_tune_string != 0) | |
15018 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 15019 | |
fef14a42 TS |
15020 | if (tune_info == 0) |
15021 | mips_set_tune (arch_info); | |
15022 | else | |
15023 | mips_set_tune (tune_info); | |
e9670677 | 15024 | |
316f5878 | 15025 | if (file_mips_gp32 >= 0) |
e9670677 | 15026 | { |
316f5878 RS |
15027 | /* The user specified the size of the integer registers. Make sure |
15028 | it agrees with the ABI and ISA. */ | |
15029 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
15030 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
15031 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
15032 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
15033 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
15034 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
15035 | } |
15036 | else | |
15037 | { | |
316f5878 RS |
15038 | /* Infer the integer register size from the ABI and processor. |
15039 | Restrict ourselves to 32-bit registers if that's all the | |
15040 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
15041 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
15042 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
15043 | } |
15044 | ||
ad3fea08 TS |
15045 | switch (file_mips_fp32) |
15046 | { | |
15047 | default: | |
15048 | case -1: | |
15049 | /* No user specified float register size. | |
15050 | ??? GAS treats single-float processors as though they had 64-bit | |
15051 | float registers (although it complains when double-precision | |
15052 | instructions are used). As things stand, saying they have 32-bit | |
15053 | registers would lead to spurious "register must be even" messages. | |
15054 | So here we assume float registers are never smaller than the | |
15055 | integer ones. */ | |
15056 | if (file_mips_gp32 == 0) | |
15057 | /* 64-bit integer registers implies 64-bit float registers. */ | |
15058 | file_mips_fp32 = 0; | |
15059 | else if ((mips_opts.ase_mips3d > 0 || mips_opts.ase_mdmx > 0) | |
15060 | && ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
15061 | /* -mips3d and -mdmx imply 64-bit float registers, if possible. */ | |
15062 | file_mips_fp32 = 0; | |
15063 | else | |
15064 | /* 32-bit float registers. */ | |
15065 | file_mips_fp32 = 1; | |
15066 | break; | |
15067 | ||
15068 | /* The user specified the size of the float registers. Check if it | |
15069 | agrees with the ABI and ISA. */ | |
15070 | case 0: | |
15071 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
15072 | as_bad (_("-mfp64 used with a 32-bit fpu")); | |
15073 | else if (ABI_NEEDS_32BIT_REGS (mips_abi) | |
15074 | && !ISA_HAS_MXHC1 (mips_opts.isa)) | |
15075 | as_warn (_("-mfp64 used with a 32-bit ABI")); | |
15076 | break; | |
15077 | case 1: | |
15078 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
15079 | as_warn (_("-mfp32 used with a 64-bit ABI")); | |
15080 | break; | |
15081 | } | |
e9670677 | 15082 | |
316f5878 | 15083 | /* End of GCC-shared inference code. */ |
e9670677 | 15084 | |
17a2f251 TS |
15085 | /* This flag is set when we have a 64-bit capable CPU but use only |
15086 | 32-bit wide registers. Note that EABI does not use it. */ | |
15087 | if (ISA_HAS_64BIT_REGS (mips_opts.isa) | |
15088 | && ((mips_abi == NO_ABI && file_mips_gp32 == 1) | |
15089 | || mips_abi == O32_ABI)) | |
316f5878 | 15090 | mips_32bitmode = 1; |
e9670677 MR |
15091 | |
15092 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
15093 | as_bad (_("trap exception not supported at ISA 1")); | |
15094 | ||
e9670677 MR |
15095 | /* If the selected architecture includes support for ASEs, enable |
15096 | generation of code for them. */ | |
a4672219 | 15097 | if (mips_opts.mips16 == -1) |
fef14a42 | 15098 | mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_arch)) ? 1 : 0; |
df58fc94 RS |
15099 | if (mips_opts.micromips == -1) |
15100 | mips_opts.micromips = (CPU_HAS_MICROMIPS (file_mips_arch)) ? 1 : 0; | |
ffdefa66 | 15101 | if (mips_opts.ase_mips3d == -1) |
65263ce3 | 15102 | mips_opts.ase_mips3d = ((arch_info->flags & MIPS_CPU_ASE_MIPS3D) |
ad3fea08 TS |
15103 | && file_mips_fp32 == 0) ? 1 : 0; |
15104 | if (mips_opts.ase_mips3d && file_mips_fp32 == 1) | |
15105 | as_bad (_("-mfp32 used with -mips3d")); | |
15106 | ||
ffdefa66 | 15107 | if (mips_opts.ase_mdmx == -1) |
65263ce3 | 15108 | mips_opts.ase_mdmx = ((arch_info->flags & MIPS_CPU_ASE_MDMX) |
ad3fea08 TS |
15109 | && file_mips_fp32 == 0) ? 1 : 0; |
15110 | if (mips_opts.ase_mdmx && file_mips_fp32 == 1) | |
15111 | as_bad (_("-mfp32 used with -mdmx")); | |
15112 | ||
15113 | if (mips_opts.ase_smartmips == -1) | |
15114 | mips_opts.ase_smartmips = (arch_info->flags & MIPS_CPU_ASE_SMARTMIPS) ? 1 : 0; | |
15115 | if (mips_opts.ase_smartmips && !ISA_SUPPORTS_SMARTMIPS) | |
20203fb9 NC |
15116 | as_warn (_("%s ISA does not support SmartMIPS"), |
15117 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 15118 | |
74cd071d | 15119 | if (mips_opts.ase_dsp == -1) |
ad3fea08 TS |
15120 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; |
15121 | if (mips_opts.ase_dsp && !ISA_SUPPORTS_DSP_ASE) | |
20203fb9 NC |
15122 | as_warn (_("%s ISA does not support DSP ASE"), |
15123 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
ad3fea08 | 15124 | |
8b082fb1 TS |
15125 | if (mips_opts.ase_dspr2 == -1) |
15126 | { | |
15127 | mips_opts.ase_dspr2 = (arch_info->flags & MIPS_CPU_ASE_DSPR2) ? 1 : 0; | |
15128 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; | |
15129 | } | |
15130 | if (mips_opts.ase_dspr2 && !ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 NC |
15131 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
15132 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
8b082fb1 | 15133 | |
ef2e4d86 | 15134 | if (mips_opts.ase_mt == -1) |
ad3fea08 TS |
15135 | mips_opts.ase_mt = (arch_info->flags & MIPS_CPU_ASE_MT) ? 1 : 0; |
15136 | if (mips_opts.ase_mt && !ISA_SUPPORTS_MT_ASE) | |
20203fb9 NC |
15137 | as_warn (_("%s ISA does not support MT ASE"), |
15138 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
e9670677 | 15139 | |
dec0624d MR |
15140 | if (mips_opts.ase_mcu == -1) |
15141 | mips_opts.ase_mcu = (arch_info->flags & MIPS_CPU_ASE_MCU) ? 1 : 0; | |
15142 | if (mips_opts.ase_mcu && !ISA_SUPPORTS_MCU_ASE) | |
15143 | as_warn (_("%s ISA does not support MCU ASE"), | |
15144 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
15145 | ||
e9670677 | 15146 | file_mips_isa = mips_opts.isa; |
e9670677 MR |
15147 | file_ase_mips3d = mips_opts.ase_mips3d; |
15148 | file_ase_mdmx = mips_opts.ase_mdmx; | |
e16bfa71 | 15149 | file_ase_smartmips = mips_opts.ase_smartmips; |
74cd071d | 15150 | file_ase_dsp = mips_opts.ase_dsp; |
8b082fb1 | 15151 | file_ase_dspr2 = mips_opts.ase_dspr2; |
ef2e4d86 | 15152 | file_ase_mt = mips_opts.ase_mt; |
e9670677 MR |
15153 | mips_opts.gp32 = file_mips_gp32; |
15154 | mips_opts.fp32 = file_mips_fp32; | |
037b32b9 AN |
15155 | mips_opts.soft_float = file_mips_soft_float; |
15156 | mips_opts.single_float = file_mips_single_float; | |
e9670677 | 15157 | |
ecb4347a DJ |
15158 | if (mips_flag_mdebug < 0) |
15159 | { | |
15160 | #ifdef OBJ_MAYBE_ECOFF | |
15161 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
15162 | mips_flag_mdebug = 1; | |
15163 | else | |
15164 | #endif /* OBJ_MAYBE_ECOFF */ | |
15165 | mips_flag_mdebug = 0; | |
15166 | } | |
e9670677 MR |
15167 | } |
15168 | \f | |
15169 | void | |
17a2f251 | 15170 | mips_init_after_args (void) |
252b5132 RH |
15171 | { |
15172 | /* initialize opcodes */ | |
15173 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 15174 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
15175 | } |
15176 | ||
15177 | long | |
17a2f251 | 15178 | md_pcrel_from (fixS *fixP) |
252b5132 | 15179 | { |
a7ebbfdf TS |
15180 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
15181 | switch (fixP->fx_r_type) | |
15182 | { | |
df58fc94 RS |
15183 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
15184 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
15185 | /* Return the address of the delay slot. */ | |
15186 | return addr + 2; | |
15187 | ||
15188 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
15189 | case BFD_RELOC_MICROMIPS_JMP: | |
a7ebbfdf TS |
15190 | case BFD_RELOC_16_PCREL_S2: |
15191 | case BFD_RELOC_MIPS_JMP: | |
15192 | /* Return the address of the delay slot. */ | |
15193 | return addr + 4; | |
df58fc94 | 15194 | |
a7ebbfdf | 15195 | default: |
58ea3d6a | 15196 | /* We have no relocation type for PC relative MIPS16 instructions. */ |
64817874 TS |
15197 | if (fixP->fx_addsy && S_GET_SEGMENT (fixP->fx_addsy) != now_seg) |
15198 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15199 | _("PC relative MIPS16 instruction references a different section")); | |
a7ebbfdf TS |
15200 | return addr; |
15201 | } | |
252b5132 RH |
15202 | } |
15203 | ||
252b5132 RH |
15204 | /* This is called before the symbol table is processed. In order to |
15205 | work with gcc when using mips-tfile, we must keep all local labels. | |
15206 | However, in other cases, we want to discard them. If we were | |
15207 | called with -g, but we didn't see any debugging information, it may | |
15208 | mean that gcc is smuggling debugging information through to | |
15209 | mips-tfile, in which case we must generate all local labels. */ | |
15210 | ||
15211 | void | |
17a2f251 | 15212 | mips_frob_file_before_adjust (void) |
252b5132 RH |
15213 | { |
15214 | #ifndef NO_ECOFF_DEBUGGING | |
15215 | if (ECOFF_DEBUGGING | |
15216 | && mips_debug != 0 | |
15217 | && ! ecoff_debugging_seen) | |
15218 | flag_keep_locals = 1; | |
15219 | #endif | |
15220 | } | |
15221 | ||
3b91255e | 15222 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 15223 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
15224 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
15225 | relocation operators. | |
15226 | ||
15227 | For our purposes, a %lo() expression matches a %got() or %hi() | |
15228 | expression if: | |
15229 | ||
15230 | (a) it refers to the same symbol; and | |
15231 | (b) the offset applied in the %lo() expression is no lower than | |
15232 | the offset applied in the %got() or %hi(). | |
15233 | ||
15234 | (b) allows us to cope with code like: | |
15235 | ||
15236 | lui $4,%hi(foo) | |
15237 | lh $4,%lo(foo+2)($4) | |
15238 | ||
15239 | ...which is legal on RELA targets, and has a well-defined behaviour | |
15240 | if the user knows that adding 2 to "foo" will not induce a carry to | |
15241 | the high 16 bits. | |
15242 | ||
15243 | When several %lo()s match a particular %got() or %hi(), we use the | |
15244 | following rules to distinguish them: | |
15245 | ||
15246 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
15247 | higher offsets. | |
15248 | ||
15249 | (2) %lo()s with no matching %got() or %hi() are better than those | |
15250 | that already have a matching %got() or %hi(). | |
15251 | ||
15252 | (3) later %lo()s are better than earlier %lo()s. | |
15253 | ||
15254 | These rules are applied in order. | |
15255 | ||
15256 | (1) means, among other things, that %lo()s with identical offsets are | |
15257 | chosen if they exist. | |
15258 | ||
15259 | (2) means that we won't associate several high-part relocations with | |
15260 | the same low-part relocation unless there's no alternative. Having | |
15261 | several high parts for the same low part is a GNU extension; this rule | |
15262 | allows careful users to avoid it. | |
15263 | ||
15264 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
15265 | with the last high-part relocation being at the front of the list. | |
15266 | It therefore makes sense to choose the last matching low-part | |
15267 | relocation, all other things being equal. It's also easier | |
15268 | to code that way. */ | |
252b5132 RH |
15269 | |
15270 | void | |
17a2f251 | 15271 | mips_frob_file (void) |
252b5132 RH |
15272 | { |
15273 | struct mips_hi_fixup *l; | |
35903be0 | 15274 | bfd_reloc_code_real_type looking_for_rtype = BFD_RELOC_UNUSED; |
252b5132 RH |
15275 | |
15276 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
15277 | { | |
15278 | segment_info_type *seginfo; | |
3b91255e RS |
15279 | bfd_boolean matched_lo_p; |
15280 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 15281 | |
9c2799c2 | 15282 | gas_assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 15283 | |
5919d012 RS |
15284 | /* If a GOT16 relocation turns out to be against a global symbol, |
15285 | there isn't supposed to be a matching LO. */ | |
738e5348 | 15286 | if (got16_reloc_p (l->fixp->fx_r_type) |
5919d012 RS |
15287 | && !pic_need_relax (l->fixp->fx_addsy, l->seg)) |
15288 | continue; | |
15289 | ||
15290 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
15291 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
15292 | continue; |
15293 | ||
252b5132 | 15294 | seginfo = seg_info (l->seg); |
252b5132 | 15295 | |
3b91255e RS |
15296 | /* Set HI_POS to the position of this relocation in the chain. |
15297 | Set LO_POS to the position of the chosen low-part relocation. | |
15298 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
15299 | relocation that matches an immediately-preceding high-part | |
15300 | relocation. */ | |
15301 | hi_pos = NULL; | |
15302 | lo_pos = NULL; | |
15303 | matched_lo_p = FALSE; | |
738e5348 | 15304 | looking_for_rtype = matching_lo_reloc (l->fixp->fx_r_type); |
35903be0 | 15305 | |
3b91255e RS |
15306 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) |
15307 | { | |
15308 | if (*pos == l->fixp) | |
15309 | hi_pos = pos; | |
15310 | ||
35903be0 | 15311 | if ((*pos)->fx_r_type == looking_for_rtype |
30cfc97a | 15312 | && symbol_same_p ((*pos)->fx_addsy, l->fixp->fx_addsy) |
3b91255e RS |
15313 | && (*pos)->fx_offset >= l->fixp->fx_offset |
15314 | && (lo_pos == NULL | |
15315 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
15316 | || (!matched_lo_p | |
15317 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
15318 | lo_pos = pos; | |
15319 | ||
15320 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
15321 | && fixup_has_matching_lo_p (*pos)); | |
15322 | } | |
15323 | ||
15324 | /* If we found a match, remove the high-part relocation from its | |
15325 | current position and insert it before the low-part relocation. | |
15326 | Make the offsets match so that fixup_has_matching_lo_p() | |
15327 | will return true. | |
15328 | ||
15329 | We don't warn about unmatched high-part relocations since some | |
15330 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
15331 | instructions. */ | |
15332 | if (lo_pos != NULL) | |
15333 | { | |
15334 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
15335 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 15336 | { |
3b91255e RS |
15337 | *hi_pos = l->fixp->fx_next; |
15338 | l->fixp->fx_next = *lo_pos; | |
15339 | *lo_pos = l->fixp; | |
252b5132 | 15340 | } |
252b5132 RH |
15341 | } |
15342 | } | |
15343 | } | |
15344 | ||
3e722fb5 | 15345 | /* We may have combined relocations without symbols in the N32/N64 ABI. |
f6688943 | 15346 | We have to prevent gas from dropping them. */ |
252b5132 | 15347 | |
252b5132 | 15348 | int |
17a2f251 | 15349 | mips_force_relocation (fixS *fixp) |
252b5132 | 15350 | { |
ae6063d4 | 15351 | if (generic_force_reloc (fixp)) |
252b5132 RH |
15352 | return 1; |
15353 | ||
df58fc94 RS |
15354 | /* We want to keep BFD_RELOC_MICROMIPS_*_PCREL_S1 relocation, |
15355 | so that the linker relaxation can update targets. */ | |
15356 | if (fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
15357 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
15358 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1) | |
15359 | return 1; | |
15360 | ||
f6688943 TS |
15361 | if (HAVE_NEWABI |
15362 | && S_GET_SEGMENT (fixp->fx_addsy) == bfd_abs_section_ptr | |
15363 | && (fixp->fx_r_type == BFD_RELOC_MIPS_SUB | |
738e5348 RS |
15364 | || hi16_reloc_p (fixp->fx_r_type) |
15365 | || lo16_reloc_p (fixp->fx_r_type))) | |
f6688943 TS |
15366 | return 1; |
15367 | ||
3e722fb5 | 15368 | return 0; |
252b5132 RH |
15369 | } |
15370 | ||
15371 | /* Apply a fixup to the object file. */ | |
15372 | ||
94f592af | 15373 | void |
55cf6793 | 15374 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 15375 | { |
874e8986 | 15376 | bfd_byte *buf; |
98aa84af | 15377 | long insn; |
a7ebbfdf | 15378 | reloc_howto_type *howto; |
252b5132 | 15379 | |
a7ebbfdf TS |
15380 | /* We ignore generic BFD relocations we don't know about. */ |
15381 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
15382 | if (! howto) | |
15383 | return; | |
65551fa4 | 15384 | |
df58fc94 RS |
15385 | gas_assert (fixP->fx_size == 2 |
15386 | || fixP->fx_size == 4 | |
90ecf173 MR |
15387 | || fixP->fx_r_type == BFD_RELOC_16 |
15388 | || fixP->fx_r_type == BFD_RELOC_64 | |
15389 | || fixP->fx_r_type == BFD_RELOC_CTOR | |
15390 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
df58fc94 | 15391 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_SUB |
90ecf173 MR |
15392 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
15393 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY | |
15394 | || fixP->fx_r_type == BFD_RELOC_MIPS_TLS_DTPREL64); | |
252b5132 | 15395 | |
a7ebbfdf | 15396 | buf = (bfd_byte *) (fixP->fx_frag->fr_literal + fixP->fx_where); |
252b5132 | 15397 | |
df58fc94 RS |
15398 | gas_assert (!fixP->fx_pcrel || fixP->fx_r_type == BFD_RELOC_16_PCREL_S2 |
15399 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
15400 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
15401 | || fixP->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
b1dca8ee RS |
15402 | |
15403 | /* Don't treat parts of a composite relocation as done. There are two | |
15404 | reasons for this: | |
15405 | ||
15406 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
15407 | should nevertheless be emitted if the first part is. | |
15408 | ||
15409 | (2) In normal usage, composite relocations are never assembly-time | |
15410 | constants. The easiest way of dealing with the pathological | |
15411 | exceptions is to generate a relocation against STN_UNDEF and | |
15412 | leave everything up to the linker. */ | |
3994f87e | 15413 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
15414 | fixP->fx_done = 1; |
15415 | ||
15416 | switch (fixP->fx_r_type) | |
15417 | { | |
3f98094e DJ |
15418 | case BFD_RELOC_MIPS_TLS_GD: |
15419 | case BFD_RELOC_MIPS_TLS_LDM: | |
741d6ea8 JM |
15420 | case BFD_RELOC_MIPS_TLS_DTPREL32: |
15421 | case BFD_RELOC_MIPS_TLS_DTPREL64: | |
3f98094e DJ |
15422 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: |
15423 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
15424 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
d0f13682 CLT |
15425 | case BFD_RELOC_MIPS_TLS_TPREL32: |
15426 | case BFD_RELOC_MIPS_TLS_TPREL64: | |
3f98094e DJ |
15427 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: |
15428 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
df58fc94 RS |
15429 | case BFD_RELOC_MICROMIPS_TLS_GD: |
15430 | case BFD_RELOC_MICROMIPS_TLS_LDM: | |
15431 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16: | |
15432 | case BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16: | |
15433 | case BFD_RELOC_MICROMIPS_TLS_GOTTPREL: | |
15434 | case BFD_RELOC_MICROMIPS_TLS_TPREL_HI16: | |
15435 | case BFD_RELOC_MICROMIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
15436 | case BFD_RELOC_MIPS16_TLS_GD: |
15437 | case BFD_RELOC_MIPS16_TLS_LDM: | |
15438 | case BFD_RELOC_MIPS16_TLS_DTPREL_HI16: | |
15439 | case BFD_RELOC_MIPS16_TLS_DTPREL_LO16: | |
15440 | case BFD_RELOC_MIPS16_TLS_GOTTPREL: | |
15441 | case BFD_RELOC_MIPS16_TLS_TPREL_HI16: | |
15442 | case BFD_RELOC_MIPS16_TLS_TPREL_LO16: | |
3f98094e DJ |
15443 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
15444 | /* fall through */ | |
15445 | ||
252b5132 | 15446 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
15447 | case BFD_RELOC_MIPS_SHIFT5: |
15448 | case BFD_RELOC_MIPS_SHIFT6: | |
15449 | case BFD_RELOC_MIPS_GOT_DISP: | |
15450 | case BFD_RELOC_MIPS_GOT_PAGE: | |
15451 | case BFD_RELOC_MIPS_GOT_OFST: | |
15452 | case BFD_RELOC_MIPS_SUB: | |
15453 | case BFD_RELOC_MIPS_INSERT_A: | |
15454 | case BFD_RELOC_MIPS_INSERT_B: | |
15455 | case BFD_RELOC_MIPS_DELETE: | |
15456 | case BFD_RELOC_MIPS_HIGHEST: | |
15457 | case BFD_RELOC_MIPS_HIGHER: | |
15458 | case BFD_RELOC_MIPS_SCN_DISP: | |
15459 | case BFD_RELOC_MIPS_REL16: | |
15460 | case BFD_RELOC_MIPS_RELGOT: | |
15461 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
15462 | case BFD_RELOC_HI16: |
15463 | case BFD_RELOC_HI16_S: | |
cdf6fd85 | 15464 | case BFD_RELOC_GPREL16: |
252b5132 RH |
15465 | case BFD_RELOC_MIPS_LITERAL: |
15466 | case BFD_RELOC_MIPS_CALL16: | |
15467 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 15468 | case BFD_RELOC_GPREL32: |
252b5132 RH |
15469 | case BFD_RELOC_MIPS_GOT_HI16: |
15470 | case BFD_RELOC_MIPS_GOT_LO16: | |
15471 | case BFD_RELOC_MIPS_CALL_HI16: | |
15472 | case BFD_RELOC_MIPS_CALL_LO16: | |
15473 | case BFD_RELOC_MIPS16_GPREL: | |
738e5348 RS |
15474 | case BFD_RELOC_MIPS16_GOT16: |
15475 | case BFD_RELOC_MIPS16_CALL16: | |
d6f16593 MR |
15476 | case BFD_RELOC_MIPS16_HI16: |
15477 | case BFD_RELOC_MIPS16_HI16_S: | |
252b5132 | 15478 | case BFD_RELOC_MIPS16_JMP: |
df58fc94 RS |
15479 | case BFD_RELOC_MICROMIPS_JMP: |
15480 | case BFD_RELOC_MICROMIPS_GOT_DISP: | |
15481 | case BFD_RELOC_MICROMIPS_GOT_PAGE: | |
15482 | case BFD_RELOC_MICROMIPS_GOT_OFST: | |
15483 | case BFD_RELOC_MICROMIPS_SUB: | |
15484 | case BFD_RELOC_MICROMIPS_HIGHEST: | |
15485 | case BFD_RELOC_MICROMIPS_HIGHER: | |
15486 | case BFD_RELOC_MICROMIPS_SCN_DISP: | |
15487 | case BFD_RELOC_MICROMIPS_JALR: | |
15488 | case BFD_RELOC_MICROMIPS_HI16: | |
15489 | case BFD_RELOC_MICROMIPS_HI16_S: | |
15490 | case BFD_RELOC_MICROMIPS_GPREL16: | |
15491 | case BFD_RELOC_MICROMIPS_LITERAL: | |
15492 | case BFD_RELOC_MICROMIPS_CALL16: | |
15493 | case BFD_RELOC_MICROMIPS_GOT16: | |
15494 | case BFD_RELOC_MICROMIPS_GOT_HI16: | |
15495 | case BFD_RELOC_MICROMIPS_GOT_LO16: | |
15496 | case BFD_RELOC_MICROMIPS_CALL_HI16: | |
15497 | case BFD_RELOC_MICROMIPS_CALL_LO16: | |
54f4ddb3 | 15498 | /* Nothing needed to do. The value comes from the reloc entry. */ |
252b5132 RH |
15499 | break; |
15500 | ||
252b5132 RH |
15501 | case BFD_RELOC_64: |
15502 | /* This is handled like BFD_RELOC_32, but we output a sign | |
15503 | extended value if we are only 32 bits. */ | |
3e722fb5 | 15504 | if (fixP->fx_done) |
252b5132 RH |
15505 | { |
15506 | if (8 <= sizeof (valueT)) | |
2132e3a3 | 15507 | md_number_to_chars ((char *) buf, *valP, 8); |
252b5132 RH |
15508 | else |
15509 | { | |
a7ebbfdf | 15510 | valueT hiv; |
252b5132 | 15511 | |
a7ebbfdf | 15512 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
15513 | hiv = 0xffffffff; |
15514 | else | |
15515 | hiv = 0; | |
b215186b | 15516 | md_number_to_chars ((char *)(buf + (target_big_endian ? 4 : 0)), |
a7ebbfdf | 15517 | *valP, 4); |
b215186b | 15518 | md_number_to_chars ((char *)(buf + (target_big_endian ? 0 : 4)), |
a7ebbfdf | 15519 | hiv, 4); |
252b5132 RH |
15520 | } |
15521 | } | |
15522 | break; | |
15523 | ||
056350c6 | 15524 | case BFD_RELOC_RVA: |
252b5132 | 15525 | case BFD_RELOC_32: |
252b5132 RH |
15526 | case BFD_RELOC_16: |
15527 | /* If we are deleting this reloc entry, we must fill in the | |
54f4ddb3 TS |
15528 | value now. This can happen if we have a .word which is not |
15529 | resolved when it appears but is later defined. */ | |
252b5132 | 15530 | if (fixP->fx_done) |
54f4ddb3 | 15531 | md_number_to_chars ((char *) buf, *valP, fixP->fx_size); |
252b5132 RH |
15532 | break; |
15533 | ||
15534 | case BFD_RELOC_LO16: | |
d6f16593 | 15535 | case BFD_RELOC_MIPS16_LO16: |
df58fc94 | 15536 | case BFD_RELOC_MICROMIPS_LO16: |
3e722fb5 CD |
15537 | /* FIXME: Now that embedded-PIC is gone, some of this code/comment |
15538 | may be safe to remove, but if so it's not obvious. */ | |
252b5132 RH |
15539 | /* When handling an embedded PIC switch statement, we can wind |
15540 | up deleting a LO16 reloc. See the 'o' case in mips_ip. */ | |
15541 | if (fixP->fx_done) | |
15542 | { | |
a7ebbfdf | 15543 | if (*valP + 0x8000 > 0xffff) |
252b5132 RH |
15544 | as_bad_where (fixP->fx_file, fixP->fx_line, |
15545 | _("relocation overflow")); | |
df58fc94 RS |
15546 | /* 32-bit microMIPS instructions are divided into two halfwords. |
15547 | Relocations always refer to the second halfword, regardless | |
15548 | of endianness. */ | |
15549 | if (target_big_endian || fixP->fx_r_type == BFD_RELOC_MICROMIPS_LO16) | |
252b5132 | 15550 | buf += 2; |
2132e3a3 | 15551 | md_number_to_chars ((char *) buf, *valP, 2); |
252b5132 RH |
15552 | } |
15553 | break; | |
15554 | ||
15555 | case BFD_RELOC_16_PCREL_S2: | |
a7ebbfdf | 15556 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 15557 | as_bad_where (fixP->fx_file, fixP->fx_line, |
bad36eac | 15558 | _("Branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 15559 | |
54f4ddb3 TS |
15560 | /* We need to save the bits in the instruction since fixup_segment() |
15561 | might be deleting the relocation entry (i.e., a branch within | |
15562 | the current segment). */ | |
a7ebbfdf | 15563 | if (! fixP->fx_done) |
bb2d6cd7 | 15564 | break; |
252b5132 | 15565 | |
54f4ddb3 | 15566 | /* Update old instruction data. */ |
252b5132 RH |
15567 | if (target_big_endian) |
15568 | insn = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
15569 | else | |
15570 | insn = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | |
15571 | ||
a7ebbfdf TS |
15572 | if (*valP + 0x20000 <= 0x3ffff) |
15573 | { | |
15574 | insn |= (*valP >> 2) & 0xffff; | |
2132e3a3 | 15575 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
15576 | } |
15577 | else if (mips_pic == NO_PIC | |
15578 | && fixP->fx_done | |
15579 | && fixP->fx_frag->fr_address >= text_section->vma | |
15580 | && (fixP->fx_frag->fr_address | |
587aac4e | 15581 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
15582 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
15583 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
15584 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
15585 | { |
15586 | /* The branch offset is too large. If this is an | |
15587 | unconditional branch, and we are not generating PIC code, | |
15588 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
15589 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
15590 | insn = 0x0c000000; /* jal */ | |
252b5132 | 15591 | else |
a7ebbfdf TS |
15592 | insn = 0x08000000; /* j */ |
15593 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
15594 | fixP->fx_done = 0; | |
15595 | fixP->fx_addsy = section_symbol (text_section); | |
15596 | *valP += md_pcrel_from (fixP); | |
2132e3a3 | 15597 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
15598 | } |
15599 | else | |
15600 | { | |
15601 | /* If we got here, we have branch-relaxation disabled, | |
15602 | and there's nothing we can do to fix this instruction | |
15603 | without turning it into a longer sequence. */ | |
15604 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
15605 | _("Branch out of range")); | |
252b5132 | 15606 | } |
252b5132 RH |
15607 | break; |
15608 | ||
df58fc94 RS |
15609 | case BFD_RELOC_MICROMIPS_7_PCREL_S1: |
15610 | case BFD_RELOC_MICROMIPS_10_PCREL_S1: | |
15611 | case BFD_RELOC_MICROMIPS_16_PCREL_S1: | |
15612 | /* We adjust the offset back to even. */ | |
15613 | if ((*valP & 0x1) != 0) | |
15614 | --(*valP); | |
15615 | ||
15616 | if (! fixP->fx_done) | |
15617 | break; | |
15618 | ||
15619 | /* Should never visit here, because we keep the relocation. */ | |
15620 | abort (); | |
15621 | break; | |
15622 | ||
252b5132 RH |
15623 | case BFD_RELOC_VTABLE_INHERIT: |
15624 | fixP->fx_done = 0; | |
15625 | if (fixP->fx_addsy | |
15626 | && !S_IS_DEFINED (fixP->fx_addsy) | |
15627 | && !S_IS_WEAK (fixP->fx_addsy)) | |
15628 | S_SET_WEAK (fixP->fx_addsy); | |
15629 | break; | |
15630 | ||
15631 | case BFD_RELOC_VTABLE_ENTRY: | |
15632 | fixP->fx_done = 0; | |
15633 | break; | |
15634 | ||
15635 | default: | |
15636 | internalError (); | |
15637 | } | |
a7ebbfdf TS |
15638 | |
15639 | /* Remember value for tc_gen_reloc. */ | |
15640 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
15641 | } |
15642 | ||
252b5132 | 15643 | static symbolS * |
17a2f251 | 15644 | get_symbol (void) |
252b5132 RH |
15645 | { |
15646 | int c; | |
15647 | char *name; | |
15648 | symbolS *p; | |
15649 | ||
15650 | name = input_line_pointer; | |
15651 | c = get_symbol_end (); | |
15652 | p = (symbolS *) symbol_find_or_make (name); | |
15653 | *input_line_pointer = c; | |
15654 | return p; | |
15655 | } | |
15656 | ||
742a56fe RS |
15657 | /* Align the current frag to a given power of two. If a particular |
15658 | fill byte should be used, FILL points to an integer that contains | |
15659 | that byte, otherwise FILL is null. | |
15660 | ||
462427c4 RS |
15661 | This function used to have the comment: |
15662 | ||
15663 | The MIPS assembler also automatically adjusts any preceding label. | |
15664 | ||
15665 | The implementation therefore applied the adjustment to a maximum of | |
15666 | one label. However, other label adjustments are applied to batches | |
15667 | of labels, and adjusting just one caused problems when new labels | |
15668 | were added for the sake of debugging or unwind information. | |
15669 | We therefore adjust all preceding labels (given as LABELS) instead. */ | |
252b5132 RH |
15670 | |
15671 | static void | |
462427c4 | 15672 | mips_align (int to, int *fill, struct insn_label_list *labels) |
252b5132 | 15673 | { |
7d10b47d | 15674 | mips_emit_delays (); |
df58fc94 | 15675 | mips_record_compressed_mode (); |
742a56fe RS |
15676 | if (fill == NULL && subseg_text_p (now_seg)) |
15677 | frag_align_code (to, 0); | |
15678 | else | |
15679 | frag_align (to, fill ? *fill : 0, 0); | |
252b5132 | 15680 | record_alignment (now_seg, to); |
462427c4 | 15681 | mips_move_labels (labels, FALSE); |
252b5132 RH |
15682 | } |
15683 | ||
15684 | /* Align to a given power of two. .align 0 turns off the automatic | |
15685 | alignment used by the data creating pseudo-ops. */ | |
15686 | ||
15687 | static void | |
17a2f251 | 15688 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 15689 | { |
742a56fe | 15690 | int temp, fill_value, *fill_ptr; |
49954fb4 | 15691 | long max_alignment = 28; |
252b5132 | 15692 | |
54f4ddb3 | 15693 | /* o Note that the assembler pulls down any immediately preceding label |
252b5132 | 15694 | to the aligned address. |
54f4ddb3 | 15695 | o It's not documented but auto alignment is reinstated by |
252b5132 | 15696 | a .align pseudo instruction. |
54f4ddb3 | 15697 | o Note also that after auto alignment is turned off the mips assembler |
252b5132 | 15698 | issues an error on attempt to assemble an improperly aligned data item. |
54f4ddb3 | 15699 | We don't. */ |
252b5132 RH |
15700 | |
15701 | temp = get_absolute_expression (); | |
15702 | if (temp > max_alignment) | |
15703 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
15704 | else if (temp < 0) | |
15705 | { | |
15706 | as_warn (_("Alignment negative: 0 assumed.")); | |
15707 | temp = 0; | |
15708 | } | |
15709 | if (*input_line_pointer == ',') | |
15710 | { | |
f9419b05 | 15711 | ++input_line_pointer; |
742a56fe RS |
15712 | fill_value = get_absolute_expression (); |
15713 | fill_ptr = &fill_value; | |
252b5132 RH |
15714 | } |
15715 | else | |
742a56fe | 15716 | fill_ptr = 0; |
252b5132 RH |
15717 | if (temp) |
15718 | { | |
a8dbcb85 TS |
15719 | segment_info_type *si = seg_info (now_seg); |
15720 | struct insn_label_list *l = si->label_list; | |
54f4ddb3 | 15721 | /* Auto alignment should be switched on by next section change. */ |
252b5132 | 15722 | auto_align = 1; |
462427c4 | 15723 | mips_align (temp, fill_ptr, l); |
252b5132 RH |
15724 | } |
15725 | else | |
15726 | { | |
15727 | auto_align = 0; | |
15728 | } | |
15729 | ||
15730 | demand_empty_rest_of_line (); | |
15731 | } | |
15732 | ||
252b5132 | 15733 | static void |
17a2f251 | 15734 | s_change_sec (int sec) |
252b5132 RH |
15735 | { |
15736 | segT seg; | |
15737 | ||
252b5132 RH |
15738 | #ifdef OBJ_ELF |
15739 | /* The ELF backend needs to know that we are changing sections, so | |
15740 | that .previous works correctly. We could do something like check | |
b6ff326e | 15741 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
15742 | as it would not be appropriate to use it in the section changing |
15743 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
15744 | This should be cleaner, somehow. */ | |
f43abd2b TS |
15745 | if (IS_ELF) |
15746 | obj_elf_section_change_hook (); | |
252b5132 RH |
15747 | #endif |
15748 | ||
7d10b47d | 15749 | mips_emit_delays (); |
6a32d874 | 15750 | |
252b5132 RH |
15751 | switch (sec) |
15752 | { | |
15753 | case 't': | |
15754 | s_text (0); | |
15755 | break; | |
15756 | case 'd': | |
15757 | s_data (0); | |
15758 | break; | |
15759 | case 'b': | |
15760 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
15761 | demand_empty_rest_of_line (); | |
15762 | break; | |
15763 | ||
15764 | case 'r': | |
4d0d148d TS |
15765 | seg = subseg_new (RDATA_SECTION_NAME, |
15766 | (subsegT) get_absolute_expression ()); | |
f43abd2b | 15767 | if (IS_ELF) |
252b5132 | 15768 | { |
4d0d148d TS |
15769 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
15770 | | SEC_READONLY | SEC_RELOC | |
15771 | | SEC_DATA)); | |
c41e87e3 | 15772 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 15773 | record_alignment (seg, 4); |
252b5132 | 15774 | } |
4d0d148d | 15775 | demand_empty_rest_of_line (); |
252b5132 RH |
15776 | break; |
15777 | ||
15778 | case 's': | |
4d0d148d | 15779 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
f43abd2b | 15780 | if (IS_ELF) |
252b5132 | 15781 | { |
4d0d148d TS |
15782 | bfd_set_section_flags (stdoutput, seg, |
15783 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
c41e87e3 | 15784 | if (strncmp (TARGET_OS, "elf", 3) != 0) |
4d0d148d | 15785 | record_alignment (seg, 4); |
252b5132 | 15786 | } |
4d0d148d TS |
15787 | demand_empty_rest_of_line (); |
15788 | break; | |
998b3c36 MR |
15789 | |
15790 | case 'B': | |
15791 | seg = subseg_new (".sbss", (subsegT) get_absolute_expression ()); | |
15792 | if (IS_ELF) | |
15793 | { | |
15794 | bfd_set_section_flags (stdoutput, seg, SEC_ALLOC); | |
15795 | if (strncmp (TARGET_OS, "elf", 3) != 0) | |
15796 | record_alignment (seg, 4); | |
15797 | } | |
15798 | demand_empty_rest_of_line (); | |
15799 | break; | |
252b5132 RH |
15800 | } |
15801 | ||
15802 | auto_align = 1; | |
15803 | } | |
b34976b6 | 15804 | |
cca86cc8 | 15805 | void |
17a2f251 | 15806 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 15807 | { |
7ed4a06a | 15808 | #ifdef OBJ_ELF |
cca86cc8 SC |
15809 | char *section_name; |
15810 | char c; | |
684022ea | 15811 | char next_c = 0; |
cca86cc8 SC |
15812 | int section_type; |
15813 | int section_flag; | |
15814 | int section_entry_size; | |
15815 | int section_alignment; | |
b34976b6 | 15816 | |
f43abd2b | 15817 | if (!IS_ELF) |
7ed4a06a TS |
15818 | return; |
15819 | ||
cca86cc8 SC |
15820 | section_name = input_line_pointer; |
15821 | c = get_symbol_end (); | |
a816d1ed AO |
15822 | if (c) |
15823 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 15824 | |
4cf0dd0d TS |
15825 | /* Do we have .section Name<,"flags">? */ |
15826 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 15827 | { |
4cf0dd0d TS |
15828 | /* just after name is now '\0'. */ |
15829 | *input_line_pointer = c; | |
cca86cc8 SC |
15830 | input_line_pointer = section_name; |
15831 | obj_elf_section (ignore); | |
15832 | return; | |
15833 | } | |
15834 | input_line_pointer++; | |
15835 | ||
15836 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
15837 | if (c == ',') | |
15838 | section_type = get_absolute_expression (); | |
15839 | else | |
15840 | section_type = 0; | |
15841 | if (*input_line_pointer++ == ',') | |
15842 | section_flag = get_absolute_expression (); | |
15843 | else | |
15844 | section_flag = 0; | |
15845 | if (*input_line_pointer++ == ',') | |
15846 | section_entry_size = get_absolute_expression (); | |
15847 | else | |
15848 | section_entry_size = 0; | |
15849 | if (*input_line_pointer++ == ',') | |
15850 | section_alignment = get_absolute_expression (); | |
15851 | else | |
15852 | section_alignment = 0; | |
87975d2a AM |
15853 | /* FIXME: really ignore? */ |
15854 | (void) section_alignment; | |
cca86cc8 | 15855 | |
a816d1ed AO |
15856 | section_name = xstrdup (section_name); |
15857 | ||
8ab8a5c8 RS |
15858 | /* When using the generic form of .section (as implemented by obj-elf.c), |
15859 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
15860 | traditionally had to fall back on the more common @progbits instead. | |
15861 | ||
15862 | There's nothing really harmful in this, since bfd will correct | |
15863 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 15864 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
15865 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
15866 | ||
15867 | Even so, we shouldn't force users of the MIPS .section syntax to | |
15868 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
15869 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
15870 | generic type-checking code. */ | |
15871 | if (section_type == SHT_MIPS_DWARF) | |
15872 | section_type = SHT_PROGBITS; | |
15873 | ||
cca86cc8 SC |
15874 | obj_elf_change_section (section_name, section_type, section_flag, |
15875 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
15876 | |
15877 | if (now_seg->name != section_name) | |
15878 | free (section_name); | |
7ed4a06a | 15879 | #endif /* OBJ_ELF */ |
cca86cc8 | 15880 | } |
252b5132 RH |
15881 | |
15882 | void | |
17a2f251 | 15883 | mips_enable_auto_align (void) |
252b5132 RH |
15884 | { |
15885 | auto_align = 1; | |
15886 | } | |
15887 | ||
15888 | static void | |
17a2f251 | 15889 | s_cons (int log_size) |
252b5132 | 15890 | { |
a8dbcb85 TS |
15891 | segment_info_type *si = seg_info (now_seg); |
15892 | struct insn_label_list *l = si->label_list; | |
252b5132 | 15893 | |
7d10b47d | 15894 | mips_emit_delays (); |
252b5132 | 15895 | if (log_size > 0 && auto_align) |
462427c4 | 15896 | mips_align (log_size, 0, l); |
252b5132 | 15897 | cons (1 << log_size); |
a1facbec | 15898 | mips_clear_insn_labels (); |
252b5132 RH |
15899 | } |
15900 | ||
15901 | static void | |
17a2f251 | 15902 | s_float_cons (int type) |
252b5132 | 15903 | { |
a8dbcb85 TS |
15904 | segment_info_type *si = seg_info (now_seg); |
15905 | struct insn_label_list *l = si->label_list; | |
252b5132 | 15906 | |
7d10b47d | 15907 | mips_emit_delays (); |
252b5132 RH |
15908 | |
15909 | if (auto_align) | |
49309057 ILT |
15910 | { |
15911 | if (type == 'd') | |
462427c4 | 15912 | mips_align (3, 0, l); |
49309057 | 15913 | else |
462427c4 | 15914 | mips_align (2, 0, l); |
49309057 | 15915 | } |
252b5132 | 15916 | |
252b5132 | 15917 | float_cons (type); |
a1facbec | 15918 | mips_clear_insn_labels (); |
252b5132 RH |
15919 | } |
15920 | ||
15921 | /* Handle .globl. We need to override it because on Irix 5 you are | |
15922 | permitted to say | |
15923 | .globl foo .text | |
15924 | where foo is an undefined symbol, to mean that foo should be | |
15925 | considered to be the address of a function. */ | |
15926 | ||
15927 | static void | |
17a2f251 | 15928 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
15929 | { |
15930 | char *name; | |
15931 | int c; | |
15932 | symbolS *symbolP; | |
15933 | flagword flag; | |
15934 | ||
8a06b769 | 15935 | do |
252b5132 | 15936 | { |
8a06b769 | 15937 | name = input_line_pointer; |
252b5132 | 15938 | c = get_symbol_end (); |
8a06b769 TS |
15939 | symbolP = symbol_find_or_make (name); |
15940 | S_SET_EXTERNAL (symbolP); | |
15941 | ||
252b5132 | 15942 | *input_line_pointer = c; |
8a06b769 | 15943 | SKIP_WHITESPACE (); |
252b5132 | 15944 | |
8a06b769 TS |
15945 | /* On Irix 5, every global symbol that is not explicitly labelled as |
15946 | being a function is apparently labelled as being an object. */ | |
15947 | flag = BSF_OBJECT; | |
252b5132 | 15948 | |
8a06b769 TS |
15949 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
15950 | && (*input_line_pointer != ',')) | |
15951 | { | |
15952 | char *secname; | |
15953 | asection *sec; | |
15954 | ||
15955 | secname = input_line_pointer; | |
15956 | c = get_symbol_end (); | |
15957 | sec = bfd_get_section_by_name (stdoutput, secname); | |
15958 | if (sec == NULL) | |
15959 | as_bad (_("%s: no such section"), secname); | |
15960 | *input_line_pointer = c; | |
15961 | ||
15962 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
15963 | flag = BSF_FUNCTION; | |
15964 | } | |
15965 | ||
15966 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
15967 | ||
15968 | c = *input_line_pointer; | |
15969 | if (c == ',') | |
15970 | { | |
15971 | input_line_pointer++; | |
15972 | SKIP_WHITESPACE (); | |
15973 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
15974 | c = '\n'; | |
15975 | } | |
15976 | } | |
15977 | while (c == ','); | |
252b5132 | 15978 | |
252b5132 RH |
15979 | demand_empty_rest_of_line (); |
15980 | } | |
15981 | ||
15982 | static void | |
17a2f251 | 15983 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
15984 | { |
15985 | char *opt; | |
15986 | char c; | |
15987 | ||
15988 | opt = input_line_pointer; | |
15989 | c = get_symbol_end (); | |
15990 | ||
15991 | if (*opt == 'O') | |
15992 | { | |
15993 | /* FIXME: What does this mean? */ | |
15994 | } | |
15995 | else if (strncmp (opt, "pic", 3) == 0) | |
15996 | { | |
15997 | int i; | |
15998 | ||
15999 | i = atoi (opt + 3); | |
16000 | if (i == 0) | |
16001 | mips_pic = NO_PIC; | |
16002 | else if (i == 2) | |
143d77c5 | 16003 | { |
8b828383 | 16004 | mips_pic = SVR4_PIC; |
143d77c5 EC |
16005 | mips_abicalls = TRUE; |
16006 | } | |
252b5132 RH |
16007 | else |
16008 | as_bad (_(".option pic%d not supported"), i); | |
16009 | ||
4d0d148d | 16010 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
16011 | { |
16012 | if (g_switch_seen && g_switch_value != 0) | |
16013 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
16014 | g_switch_value = 0; | |
16015 | bfd_set_gp_size (stdoutput, 0); | |
16016 | } | |
16017 | } | |
16018 | else | |
16019 | as_warn (_("Unrecognized option \"%s\""), opt); | |
16020 | ||
16021 | *input_line_pointer = c; | |
16022 | demand_empty_rest_of_line (); | |
16023 | } | |
16024 | ||
16025 | /* This structure is used to hold a stack of .set values. */ | |
16026 | ||
e972090a NC |
16027 | struct mips_option_stack |
16028 | { | |
252b5132 RH |
16029 | struct mips_option_stack *next; |
16030 | struct mips_set_options options; | |
16031 | }; | |
16032 | ||
16033 | static struct mips_option_stack *mips_opts_stack; | |
16034 | ||
16035 | /* Handle the .set pseudo-op. */ | |
16036 | ||
16037 | static void | |
17a2f251 | 16038 | s_mipsset (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
16039 | { |
16040 | char *name = input_line_pointer, ch; | |
16041 | ||
16042 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 16043 | ++input_line_pointer; |
252b5132 RH |
16044 | ch = *input_line_pointer; |
16045 | *input_line_pointer = '\0'; | |
16046 | ||
16047 | if (strcmp (name, "reorder") == 0) | |
16048 | { | |
7d10b47d RS |
16049 | if (mips_opts.noreorder) |
16050 | end_noreorder (); | |
252b5132 RH |
16051 | } |
16052 | else if (strcmp (name, "noreorder") == 0) | |
16053 | { | |
7d10b47d RS |
16054 | if (!mips_opts.noreorder) |
16055 | start_noreorder (); | |
252b5132 | 16056 | } |
741fe287 MR |
16057 | else if (strncmp (name, "at=", 3) == 0) |
16058 | { | |
16059 | char *s = name + 3; | |
16060 | ||
16061 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, &mips_opts.at)) | |
16062 | as_bad (_("Unrecognized register name `%s'"), s); | |
16063 | } | |
252b5132 RH |
16064 | else if (strcmp (name, "at") == 0) |
16065 | { | |
741fe287 | 16066 | mips_opts.at = ATREG; |
252b5132 RH |
16067 | } |
16068 | else if (strcmp (name, "noat") == 0) | |
16069 | { | |
741fe287 | 16070 | mips_opts.at = ZERO; |
252b5132 RH |
16071 | } |
16072 | else if (strcmp (name, "macro") == 0) | |
16073 | { | |
16074 | mips_opts.warn_about_macros = 0; | |
16075 | } | |
16076 | else if (strcmp (name, "nomacro") == 0) | |
16077 | { | |
16078 | if (mips_opts.noreorder == 0) | |
16079 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
16080 | mips_opts.warn_about_macros = 1; | |
16081 | } | |
16082 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
16083 | { | |
16084 | mips_opts.nomove = 0; | |
16085 | } | |
16086 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
16087 | { | |
16088 | mips_opts.nomove = 1; | |
16089 | } | |
16090 | else if (strcmp (name, "bopt") == 0) | |
16091 | { | |
16092 | mips_opts.nobopt = 0; | |
16093 | } | |
16094 | else if (strcmp (name, "nobopt") == 0) | |
16095 | { | |
16096 | mips_opts.nobopt = 1; | |
16097 | } | |
ad3fea08 TS |
16098 | else if (strcmp (name, "gp=default") == 0) |
16099 | mips_opts.gp32 = file_mips_gp32; | |
16100 | else if (strcmp (name, "gp=32") == 0) | |
16101 | mips_opts.gp32 = 1; | |
16102 | else if (strcmp (name, "gp=64") == 0) | |
16103 | { | |
16104 | if (!ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
20203fb9 | 16105 | as_warn (_("%s isa does not support 64-bit registers"), |
ad3fea08 TS |
16106 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16107 | mips_opts.gp32 = 0; | |
16108 | } | |
16109 | else if (strcmp (name, "fp=default") == 0) | |
16110 | mips_opts.fp32 = file_mips_fp32; | |
16111 | else if (strcmp (name, "fp=32") == 0) | |
16112 | mips_opts.fp32 = 1; | |
16113 | else if (strcmp (name, "fp=64") == 0) | |
16114 | { | |
16115 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
20203fb9 | 16116 | as_warn (_("%s isa does not support 64-bit floating point registers"), |
ad3fea08 TS |
16117 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16118 | mips_opts.fp32 = 0; | |
16119 | } | |
037b32b9 AN |
16120 | else if (strcmp (name, "softfloat") == 0) |
16121 | mips_opts.soft_float = 1; | |
16122 | else if (strcmp (name, "hardfloat") == 0) | |
16123 | mips_opts.soft_float = 0; | |
16124 | else if (strcmp (name, "singlefloat") == 0) | |
16125 | mips_opts.single_float = 1; | |
16126 | else if (strcmp (name, "doublefloat") == 0) | |
16127 | mips_opts.single_float = 0; | |
252b5132 RH |
16128 | else if (strcmp (name, "mips16") == 0 |
16129 | || strcmp (name, "MIPS-16") == 0) | |
df58fc94 RS |
16130 | { |
16131 | if (mips_opts.micromips == 1) | |
16132 | as_fatal (_("`mips16' cannot be used with `micromips'")); | |
16133 | mips_opts.mips16 = 1; | |
16134 | } | |
252b5132 RH |
16135 | else if (strcmp (name, "nomips16") == 0 |
16136 | || strcmp (name, "noMIPS-16") == 0) | |
16137 | mips_opts.mips16 = 0; | |
df58fc94 RS |
16138 | else if (strcmp (name, "micromips") == 0) |
16139 | { | |
16140 | if (mips_opts.mips16 == 1) | |
16141 | as_fatal (_("`micromips' cannot be used with `mips16'")); | |
16142 | mips_opts.micromips = 1; | |
16143 | } | |
16144 | else if (strcmp (name, "nomicromips") == 0) | |
16145 | mips_opts.micromips = 0; | |
e16bfa71 TS |
16146 | else if (strcmp (name, "smartmips") == 0) |
16147 | { | |
ad3fea08 | 16148 | if (!ISA_SUPPORTS_SMARTMIPS) |
20203fb9 | 16149 | as_warn (_("%s ISA does not support SmartMIPS ASE"), |
e16bfa71 TS |
16150 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16151 | mips_opts.ase_smartmips = 1; | |
16152 | } | |
16153 | else if (strcmp (name, "nosmartmips") == 0) | |
16154 | mips_opts.ase_smartmips = 0; | |
1f25f5d3 CD |
16155 | else if (strcmp (name, "mips3d") == 0) |
16156 | mips_opts.ase_mips3d = 1; | |
16157 | else if (strcmp (name, "nomips3d") == 0) | |
16158 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
16159 | else if (strcmp (name, "mdmx") == 0) |
16160 | mips_opts.ase_mdmx = 1; | |
16161 | else if (strcmp (name, "nomdmx") == 0) | |
16162 | mips_opts.ase_mdmx = 0; | |
74cd071d | 16163 | else if (strcmp (name, "dsp") == 0) |
ad3fea08 TS |
16164 | { |
16165 | if (!ISA_SUPPORTS_DSP_ASE) | |
20203fb9 | 16166 | as_warn (_("%s ISA does not support DSP ASE"), |
ad3fea08 TS |
16167 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16168 | mips_opts.ase_dsp = 1; | |
8b082fb1 | 16169 | mips_opts.ase_dspr2 = 0; |
ad3fea08 | 16170 | } |
74cd071d | 16171 | else if (strcmp (name, "nodsp") == 0) |
8b082fb1 TS |
16172 | { |
16173 | mips_opts.ase_dsp = 0; | |
16174 | mips_opts.ase_dspr2 = 0; | |
16175 | } | |
16176 | else if (strcmp (name, "dspr2") == 0) | |
16177 | { | |
16178 | if (!ISA_SUPPORTS_DSPR2_ASE) | |
20203fb9 | 16179 | as_warn (_("%s ISA does not support DSP R2 ASE"), |
8b082fb1 TS |
16180 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16181 | mips_opts.ase_dspr2 = 1; | |
16182 | mips_opts.ase_dsp = 1; | |
16183 | } | |
16184 | else if (strcmp (name, "nodspr2") == 0) | |
16185 | { | |
16186 | mips_opts.ase_dspr2 = 0; | |
16187 | mips_opts.ase_dsp = 0; | |
16188 | } | |
ef2e4d86 | 16189 | else if (strcmp (name, "mt") == 0) |
ad3fea08 TS |
16190 | { |
16191 | if (!ISA_SUPPORTS_MT_ASE) | |
20203fb9 | 16192 | as_warn (_("%s ISA does not support MT ASE"), |
ad3fea08 TS |
16193 | mips_cpu_info_from_isa (mips_opts.isa)->name); |
16194 | mips_opts.ase_mt = 1; | |
16195 | } | |
ef2e4d86 CF |
16196 | else if (strcmp (name, "nomt") == 0) |
16197 | mips_opts.ase_mt = 0; | |
dec0624d MR |
16198 | else if (strcmp (name, "mcu") == 0) |
16199 | mips_opts.ase_mcu = 1; | |
16200 | else if (strcmp (name, "nomcu") == 0) | |
16201 | mips_opts.ase_mcu = 0; | |
1a2c1fad | 16202 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 16203 | { |
af7ee8bf | 16204 | int reset = 0; |
252b5132 | 16205 | |
1a2c1fad CD |
16206 | /* Permit the user to change the ISA and architecture on the fly. |
16207 | Needless to say, misuse can cause serious problems. */ | |
81a21e38 | 16208 | if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) |
af7ee8bf CD |
16209 | { |
16210 | reset = 1; | |
16211 | mips_opts.isa = file_mips_isa; | |
1a2c1fad | 16212 | mips_opts.arch = file_mips_arch; |
1a2c1fad CD |
16213 | } |
16214 | else if (strncmp (name, "arch=", 5) == 0) | |
16215 | { | |
16216 | const struct mips_cpu_info *p; | |
16217 | ||
16218 | p = mips_parse_cpu("internal use", name + 5); | |
16219 | if (!p) | |
16220 | as_bad (_("unknown architecture %s"), name + 5); | |
16221 | else | |
16222 | { | |
16223 | mips_opts.arch = p->cpu; | |
16224 | mips_opts.isa = p->isa; | |
16225 | } | |
16226 | } | |
81a21e38 TS |
16227 | else if (strncmp (name, "mips", 4) == 0) |
16228 | { | |
16229 | const struct mips_cpu_info *p; | |
16230 | ||
16231 | p = mips_parse_cpu("internal use", name); | |
16232 | if (!p) | |
16233 | as_bad (_("unknown ISA level %s"), name + 4); | |
16234 | else | |
16235 | { | |
16236 | mips_opts.arch = p->cpu; | |
16237 | mips_opts.isa = p->isa; | |
16238 | } | |
16239 | } | |
af7ee8bf | 16240 | else |
81a21e38 | 16241 | as_bad (_("unknown ISA or architecture %s"), name); |
af7ee8bf CD |
16242 | |
16243 | switch (mips_opts.isa) | |
98d3f06f KH |
16244 | { |
16245 | case 0: | |
98d3f06f | 16246 | break; |
af7ee8bf CD |
16247 | case ISA_MIPS1: |
16248 | case ISA_MIPS2: | |
16249 | case ISA_MIPS32: | |
16250 | case ISA_MIPS32R2: | |
98d3f06f KH |
16251 | mips_opts.gp32 = 1; |
16252 | mips_opts.fp32 = 1; | |
16253 | break; | |
af7ee8bf CD |
16254 | case ISA_MIPS3: |
16255 | case ISA_MIPS4: | |
16256 | case ISA_MIPS5: | |
16257 | case ISA_MIPS64: | |
5f74bc13 | 16258 | case ISA_MIPS64R2: |
98d3f06f KH |
16259 | mips_opts.gp32 = 0; |
16260 | mips_opts.fp32 = 0; | |
16261 | break; | |
16262 | default: | |
16263 | as_bad (_("unknown ISA level %s"), name + 4); | |
16264 | break; | |
16265 | } | |
af7ee8bf | 16266 | if (reset) |
98d3f06f | 16267 | { |
af7ee8bf CD |
16268 | mips_opts.gp32 = file_mips_gp32; |
16269 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 16270 | } |
252b5132 RH |
16271 | } |
16272 | else if (strcmp (name, "autoextend") == 0) | |
16273 | mips_opts.noautoextend = 0; | |
16274 | else if (strcmp (name, "noautoextend") == 0) | |
16275 | mips_opts.noautoextend = 1; | |
16276 | else if (strcmp (name, "push") == 0) | |
16277 | { | |
16278 | struct mips_option_stack *s; | |
16279 | ||
16280 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
16281 | s->next = mips_opts_stack; | |
16282 | s->options = mips_opts; | |
16283 | mips_opts_stack = s; | |
16284 | } | |
16285 | else if (strcmp (name, "pop") == 0) | |
16286 | { | |
16287 | struct mips_option_stack *s; | |
16288 | ||
16289 | s = mips_opts_stack; | |
16290 | if (s == NULL) | |
16291 | as_bad (_(".set pop with no .set push")); | |
16292 | else | |
16293 | { | |
16294 | /* If we're changing the reorder mode we need to handle | |
16295 | delay slots correctly. */ | |
16296 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 16297 | start_noreorder (); |
252b5132 | 16298 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 16299 | end_noreorder (); |
252b5132 RH |
16300 | |
16301 | mips_opts = s->options; | |
16302 | mips_opts_stack = s->next; | |
16303 | free (s); | |
16304 | } | |
16305 | } | |
aed1a261 RS |
16306 | else if (strcmp (name, "sym32") == 0) |
16307 | mips_opts.sym32 = TRUE; | |
16308 | else if (strcmp (name, "nosym32") == 0) | |
16309 | mips_opts.sym32 = FALSE; | |
e6559e01 JM |
16310 | else if (strchr (name, ',')) |
16311 | { | |
16312 | /* Generic ".set" directive; use the generic handler. */ | |
16313 | *input_line_pointer = ch; | |
16314 | input_line_pointer = name; | |
16315 | s_set (0); | |
16316 | return; | |
16317 | } | |
252b5132 RH |
16318 | else |
16319 | { | |
16320 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
16321 | } | |
16322 | *input_line_pointer = ch; | |
16323 | demand_empty_rest_of_line (); | |
16324 | } | |
16325 | ||
16326 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
16327 | .option pic2. It means to generate SVR4 PIC calls. */ | |
16328 | ||
16329 | static void | |
17a2f251 | 16330 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16331 | { |
16332 | mips_pic = SVR4_PIC; | |
143d77c5 | 16333 | mips_abicalls = TRUE; |
4d0d148d TS |
16334 | |
16335 | if (g_switch_seen && g_switch_value != 0) | |
16336 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
16337 | g_switch_value = 0; | |
16338 | ||
252b5132 RH |
16339 | bfd_set_gp_size (stdoutput, 0); |
16340 | demand_empty_rest_of_line (); | |
16341 | } | |
16342 | ||
16343 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
16344 | PIC code. It sets the $gp register for the function based on the | |
16345 | function address, which is in the register named in the argument. | |
16346 | This uses a relocation against _gp_disp, which is handled specially | |
16347 | by the linker. The result is: | |
16348 | lui $gp,%hi(_gp_disp) | |
16349 | addiu $gp,$gp,%lo(_gp_disp) | |
16350 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
16351 | The .cpload argument is normally $25 == $t9. |
16352 | ||
16353 | The -mno-shared option changes this to: | |
bbe506e8 TS |
16354 | lui $gp,%hi(__gnu_local_gp) |
16355 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
16356 | and the argument is ignored. This saves an instruction, but the |
16357 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
16358 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
16359 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
16360 | |
16361 | static void | |
17a2f251 | 16362 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16363 | { |
16364 | expressionS ex; | |
aa6975fb ILT |
16365 | int reg; |
16366 | int in_shared; | |
252b5132 | 16367 | |
6478892d TS |
16368 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
16369 | .cpload is ignored. */ | |
16370 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
16371 | { |
16372 | s_ignore (0); | |
16373 | return; | |
16374 | } | |
16375 | ||
d3ecfc59 | 16376 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
16377 | if (mips_opts.noreorder == 0) |
16378 | as_warn (_(".cpload not in noreorder section")); | |
16379 | ||
aa6975fb ILT |
16380 | reg = tc_get_register (0); |
16381 | ||
16382 | /* If we need to produce a 64-bit address, we are better off using | |
16383 | the default instruction sequence. */ | |
aed1a261 | 16384 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 16385 | |
252b5132 | 16386 | ex.X_op = O_symbol; |
bbe506e8 TS |
16387 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
16388 | "__gnu_local_gp"); | |
252b5132 RH |
16389 | ex.X_op_symbol = NULL; |
16390 | ex.X_add_number = 0; | |
16391 | ||
16392 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 16393 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 16394 | |
584892a6 | 16395 | macro_start (); |
67c0d1eb RS |
16396 | macro_build_lui (&ex, mips_gp_register); |
16397 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 16398 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
16399 | if (in_shared) |
16400 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
16401 | mips_gp_register, reg); | |
584892a6 | 16402 | macro_end (); |
252b5132 RH |
16403 | |
16404 | demand_empty_rest_of_line (); | |
16405 | } | |
16406 | ||
6478892d TS |
16407 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
16408 | .cpsetup $reg1, offset|$reg2, label | |
16409 | ||
16410 | If offset is given, this results in: | |
16411 | sd $gp, offset($sp) | |
956cd1d6 | 16412 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
16413 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
16414 | daddu $gp, $gp, $reg1 | |
6478892d TS |
16415 | |
16416 | If $reg2 is given, this results in: | |
16417 | daddu $reg2, $gp, $0 | |
956cd1d6 | 16418 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
16419 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
16420 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
16421 | $reg1 is normally $25 == $t9. |
16422 | ||
16423 | The -mno-shared option replaces the last three instructions with | |
16424 | lui $gp,%hi(_gp) | |
54f4ddb3 | 16425 | addiu $gp,$gp,%lo(_gp) */ |
aa6975fb | 16426 | |
6478892d | 16427 | static void |
17a2f251 | 16428 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16429 | { |
16430 | expressionS ex_off; | |
16431 | expressionS ex_sym; | |
16432 | int reg1; | |
6478892d | 16433 | |
8586fc66 | 16434 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
16435 | We also need NewABI support. */ |
16436 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16437 | { | |
16438 | s_ignore (0); | |
16439 | return; | |
16440 | } | |
16441 | ||
16442 | reg1 = tc_get_register (0); | |
16443 | SKIP_WHITESPACE (); | |
16444 | if (*input_line_pointer != ',') | |
16445 | { | |
16446 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
16447 | return; | |
16448 | } | |
16449 | else | |
80245285 | 16450 | ++input_line_pointer; |
6478892d TS |
16451 | SKIP_WHITESPACE (); |
16452 | if (*input_line_pointer == '$') | |
80245285 TS |
16453 | { |
16454 | mips_cpreturn_register = tc_get_register (0); | |
16455 | mips_cpreturn_offset = -1; | |
16456 | } | |
6478892d | 16457 | else |
80245285 TS |
16458 | { |
16459 | mips_cpreturn_offset = get_absolute_expression (); | |
16460 | mips_cpreturn_register = -1; | |
16461 | } | |
6478892d TS |
16462 | SKIP_WHITESPACE (); |
16463 | if (*input_line_pointer != ',') | |
16464 | { | |
16465 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
16466 | return; | |
16467 | } | |
16468 | else | |
f9419b05 | 16469 | ++input_line_pointer; |
6478892d | 16470 | SKIP_WHITESPACE (); |
f21f8242 | 16471 | expression (&ex_sym); |
6478892d | 16472 | |
584892a6 | 16473 | macro_start (); |
6478892d TS |
16474 | if (mips_cpreturn_register == -1) |
16475 | { | |
16476 | ex_off.X_op = O_constant; | |
16477 | ex_off.X_add_symbol = NULL; | |
16478 | ex_off.X_op_symbol = NULL; | |
16479 | ex_off.X_add_number = mips_cpreturn_offset; | |
16480 | ||
67c0d1eb | 16481 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 16482 | BFD_RELOC_LO16, SP); |
6478892d TS |
16483 | } |
16484 | else | |
67c0d1eb | 16485 | macro_build (NULL, "daddu", "d,v,t", mips_cpreturn_register, |
17a2f251 | 16486 | mips_gp_register, 0); |
6478892d | 16487 | |
aed1a261 | 16488 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb | 16489 | { |
df58fc94 | 16490 | macro_build (&ex_sym, "lui", LUI_FMT, mips_gp_register, |
aa6975fb ILT |
16491 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, |
16492 | BFD_RELOC_HI16_S); | |
16493 | ||
16494 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
16495 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
16496 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
16497 | ||
16498 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
16499 | mips_gp_register, reg1); | |
16500 | } | |
16501 | else | |
16502 | { | |
16503 | expressionS ex; | |
16504 | ||
16505 | ex.X_op = O_symbol; | |
4184909a | 16506 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
16507 | ex.X_op_symbol = NULL; |
16508 | ex.X_add_number = 0; | |
6e1304d8 | 16509 | |
aa6975fb ILT |
16510 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
16511 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
16512 | ||
16513 | macro_build_lui (&ex, mips_gp_register); | |
16514 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
16515 | mips_gp_register, BFD_RELOC_LO16); | |
16516 | } | |
f21f8242 | 16517 | |
584892a6 | 16518 | macro_end (); |
6478892d TS |
16519 | |
16520 | demand_empty_rest_of_line (); | |
16521 | } | |
16522 | ||
16523 | static void | |
17a2f251 | 16524 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16525 | { |
16526 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
54f4ddb3 | 16527 | .cplocal is ignored. */ |
6478892d TS |
16528 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) |
16529 | { | |
16530 | s_ignore (0); | |
16531 | return; | |
16532 | } | |
16533 | ||
16534 | mips_gp_register = tc_get_register (0); | |
85b51719 | 16535 | demand_empty_rest_of_line (); |
6478892d TS |
16536 | } |
16537 | ||
252b5132 RH |
16538 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
16539 | offset from $sp. The offset is remembered, and after making a PIC | |
16540 | call $gp is restored from that location. */ | |
16541 | ||
16542 | static void | |
17a2f251 | 16543 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16544 | { |
16545 | expressionS ex; | |
252b5132 | 16546 | |
6478892d | 16547 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 16548 | .cprestore is ignored. */ |
6478892d | 16549 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
16550 | { |
16551 | s_ignore (0); | |
16552 | return; | |
16553 | } | |
16554 | ||
16555 | mips_cprestore_offset = get_absolute_expression (); | |
7a621144 | 16556 | mips_cprestore_valid = 1; |
252b5132 RH |
16557 | |
16558 | ex.X_op = O_constant; | |
16559 | ex.X_add_symbol = NULL; | |
16560 | ex.X_op_symbol = NULL; | |
16561 | ex.X_add_number = mips_cprestore_offset; | |
16562 | ||
584892a6 | 16563 | macro_start (); |
67c0d1eb RS |
16564 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
16565 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 16566 | macro_end (); |
252b5132 RH |
16567 | |
16568 | demand_empty_rest_of_line (); | |
16569 | } | |
16570 | ||
6478892d | 16571 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 16572 | was given in the preceding .cpsetup, it results in: |
6478892d | 16573 | ld $gp, offset($sp) |
76b3015f | 16574 | |
6478892d | 16575 | If a register $reg2 was given there, it results in: |
54f4ddb3 TS |
16576 | daddu $gp, $reg2, $0 */ |
16577 | ||
6478892d | 16578 | static void |
17a2f251 | 16579 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16580 | { |
16581 | expressionS ex; | |
6478892d TS |
16582 | |
16583 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
16584 | We also need NewABI support. */ | |
16585 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16586 | { | |
16587 | s_ignore (0); | |
16588 | return; | |
16589 | } | |
16590 | ||
584892a6 | 16591 | macro_start (); |
6478892d TS |
16592 | if (mips_cpreturn_register == -1) |
16593 | { | |
16594 | ex.X_op = O_constant; | |
16595 | ex.X_add_symbol = NULL; | |
16596 | ex.X_op_symbol = NULL; | |
16597 | ex.X_add_number = mips_cpreturn_offset; | |
16598 | ||
67c0d1eb | 16599 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
16600 | } |
16601 | else | |
67c0d1eb | 16602 | macro_build (NULL, "daddu", "d,v,t", mips_gp_register, |
17a2f251 | 16603 | mips_cpreturn_register, 0); |
584892a6 | 16604 | macro_end (); |
6478892d TS |
16605 | |
16606 | demand_empty_rest_of_line (); | |
16607 | } | |
16608 | ||
d0f13682 CLT |
16609 | /* Handle a .dtprelword, .dtpreldword, .tprelword, or .tpreldword |
16610 | pseudo-op; DIRSTR says which. The pseudo-op generates a BYTES-size | |
16611 | DTP- or TP-relative relocation of type RTYPE, for use in either DWARF | |
16612 | debug information or MIPS16 TLS. */ | |
741d6ea8 JM |
16613 | |
16614 | static void | |
d0f13682 CLT |
16615 | s_tls_rel_directive (const size_t bytes, const char *dirstr, |
16616 | bfd_reloc_code_real_type rtype) | |
741d6ea8 JM |
16617 | { |
16618 | expressionS ex; | |
16619 | char *p; | |
16620 | ||
16621 | expression (&ex); | |
16622 | ||
16623 | if (ex.X_op != O_symbol) | |
16624 | { | |
d0f13682 | 16625 | as_bad (_("Unsupported use of %s"), dirstr); |
741d6ea8 JM |
16626 | ignore_rest_of_line (); |
16627 | } | |
16628 | ||
16629 | p = frag_more (bytes); | |
16630 | md_number_to_chars (p, 0, bytes); | |
d0f13682 | 16631 | fix_new_exp (frag_now, p - frag_now->fr_literal, bytes, &ex, FALSE, rtype); |
741d6ea8 | 16632 | demand_empty_rest_of_line (); |
de64cffd | 16633 | mips_clear_insn_labels (); |
741d6ea8 JM |
16634 | } |
16635 | ||
16636 | /* Handle .dtprelword. */ | |
16637 | ||
16638 | static void | |
16639 | s_dtprelword (int ignore ATTRIBUTE_UNUSED) | |
16640 | { | |
d0f13682 | 16641 | s_tls_rel_directive (4, ".dtprelword", BFD_RELOC_MIPS_TLS_DTPREL32); |
741d6ea8 JM |
16642 | } |
16643 | ||
16644 | /* Handle .dtpreldword. */ | |
16645 | ||
16646 | static void | |
16647 | s_dtpreldword (int ignore ATTRIBUTE_UNUSED) | |
16648 | { | |
d0f13682 CLT |
16649 | s_tls_rel_directive (8, ".dtpreldword", BFD_RELOC_MIPS_TLS_DTPREL64); |
16650 | } | |
16651 | ||
16652 | /* Handle .tprelword. */ | |
16653 | ||
16654 | static void | |
16655 | s_tprelword (int ignore ATTRIBUTE_UNUSED) | |
16656 | { | |
16657 | s_tls_rel_directive (4, ".tprelword", BFD_RELOC_MIPS_TLS_TPREL32); | |
16658 | } | |
16659 | ||
16660 | /* Handle .tpreldword. */ | |
16661 | ||
16662 | static void | |
16663 | s_tpreldword (int ignore ATTRIBUTE_UNUSED) | |
16664 | { | |
16665 | s_tls_rel_directive (8, ".tpreldword", BFD_RELOC_MIPS_TLS_TPREL64); | |
741d6ea8 JM |
16666 | } |
16667 | ||
6478892d TS |
16668 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC |
16669 | code. It sets the offset to use in gp_rel relocations. */ | |
16670 | ||
16671 | static void | |
17a2f251 | 16672 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
16673 | { |
16674 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
16675 | We also need NewABI support. */ | |
16676 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
16677 | { | |
16678 | s_ignore (0); | |
16679 | return; | |
16680 | } | |
16681 | ||
def2e0dd | 16682 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
16683 | |
16684 | demand_empty_rest_of_line (); | |
16685 | } | |
16686 | ||
252b5132 RH |
16687 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
16688 | code. It generates a 32 bit GP relative reloc. */ | |
16689 | ||
16690 | static void | |
17a2f251 | 16691 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16692 | { |
a8dbcb85 TS |
16693 | segment_info_type *si; |
16694 | struct insn_label_list *l; | |
252b5132 RH |
16695 | expressionS ex; |
16696 | char *p; | |
16697 | ||
16698 | /* When not generating PIC code, this is treated as .word. */ | |
16699 | if (mips_pic != SVR4_PIC) | |
16700 | { | |
16701 | s_cons (2); | |
16702 | return; | |
16703 | } | |
16704 | ||
a8dbcb85 TS |
16705 | si = seg_info (now_seg); |
16706 | l = si->label_list; | |
7d10b47d | 16707 | mips_emit_delays (); |
252b5132 | 16708 | if (auto_align) |
462427c4 | 16709 | mips_align (2, 0, l); |
252b5132 RH |
16710 | |
16711 | expression (&ex); | |
a1facbec | 16712 | mips_clear_insn_labels (); |
252b5132 RH |
16713 | |
16714 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16715 | { | |
16716 | as_bad (_("Unsupported use of .gpword")); | |
16717 | ignore_rest_of_line (); | |
16718 | } | |
16719 | ||
16720 | p = frag_more (4); | |
17a2f251 | 16721 | md_number_to_chars (p, 0, 4); |
b34976b6 | 16722 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 16723 | BFD_RELOC_GPREL32); |
252b5132 RH |
16724 | |
16725 | demand_empty_rest_of_line (); | |
16726 | } | |
16727 | ||
10181a0d | 16728 | static void |
17a2f251 | 16729 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d | 16730 | { |
a8dbcb85 TS |
16731 | segment_info_type *si; |
16732 | struct insn_label_list *l; | |
10181a0d AO |
16733 | expressionS ex; |
16734 | char *p; | |
16735 | ||
16736 | /* When not generating PIC code, this is treated as .dword. */ | |
16737 | if (mips_pic != SVR4_PIC) | |
16738 | { | |
16739 | s_cons (3); | |
16740 | return; | |
16741 | } | |
16742 | ||
a8dbcb85 TS |
16743 | si = seg_info (now_seg); |
16744 | l = si->label_list; | |
7d10b47d | 16745 | mips_emit_delays (); |
10181a0d | 16746 | if (auto_align) |
462427c4 | 16747 | mips_align (3, 0, l); |
10181a0d AO |
16748 | |
16749 | expression (&ex); | |
a1facbec | 16750 | mips_clear_insn_labels (); |
10181a0d AO |
16751 | |
16752 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
16753 | { | |
16754 | as_bad (_("Unsupported use of .gpdword")); | |
16755 | ignore_rest_of_line (); | |
16756 | } | |
16757 | ||
16758 | p = frag_more (8); | |
17a2f251 | 16759 | md_number_to_chars (p, 0, 8); |
a105a300 | 16760 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 16761 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
16762 | |
16763 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
16764 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
16765 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
16766 | |
16767 | demand_empty_rest_of_line (); | |
16768 | } | |
16769 | ||
252b5132 RH |
16770 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
16771 | tables in SVR4 PIC code. */ | |
16772 | ||
16773 | static void | |
17a2f251 | 16774 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16775 | { |
252b5132 RH |
16776 | int reg; |
16777 | ||
10181a0d AO |
16778 | /* This is ignored when not generating SVR4 PIC code. */ |
16779 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
16780 | { |
16781 | s_ignore (0); | |
16782 | return; | |
16783 | } | |
16784 | ||
16785 | /* Add $gp to the register named as an argument. */ | |
584892a6 | 16786 | macro_start (); |
252b5132 | 16787 | reg = tc_get_register (0); |
67c0d1eb | 16788 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 16789 | macro_end (); |
252b5132 | 16790 | |
bdaaa2e1 | 16791 | demand_empty_rest_of_line (); |
252b5132 RH |
16792 | } |
16793 | ||
16794 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
df58fc94 | 16795 | mips16/micromips mode. This permits the linker to handle them specially, |
252b5132 RH |
16796 | such as generating jalx instructions when needed. We also make |
16797 | them odd for the duration of the assembly, in order to generate the | |
16798 | right sort of code. We will make them even in the adjust_symtab | |
16799 | routine, while leaving them marked. This is convenient for the | |
16800 | debugger and the disassembler. The linker knows to make them odd | |
16801 | again. */ | |
16802 | ||
16803 | static void | |
17a2f251 | 16804 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 16805 | { |
df58fc94 | 16806 | mips_mark_labels (); |
252b5132 RH |
16807 | |
16808 | demand_empty_rest_of_line (); | |
16809 | } | |
16810 | ||
16811 | /* Handle a .stabn directive. We need these in order to mark a label | |
16812 | as being a mips16 text label correctly. Sometimes the compiler | |
16813 | will emit a label, followed by a .stabn, and then switch sections. | |
16814 | If the label and .stabn are in mips16 mode, then the label is | |
16815 | really a mips16 text label. */ | |
16816 | ||
16817 | static void | |
17a2f251 | 16818 | s_mips_stab (int type) |
252b5132 | 16819 | { |
f9419b05 | 16820 | if (type == 'n') |
df58fc94 | 16821 | mips_mark_labels (); |
252b5132 RH |
16822 | |
16823 | s_stab (type); | |
16824 | } | |
16825 | ||
54f4ddb3 | 16826 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. */ |
252b5132 RH |
16827 | |
16828 | static void | |
17a2f251 | 16829 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
16830 | { |
16831 | char *name; | |
16832 | int c; | |
16833 | symbolS *symbolP; | |
16834 | expressionS exp; | |
16835 | ||
16836 | name = input_line_pointer; | |
16837 | c = get_symbol_end (); | |
16838 | symbolP = symbol_find_or_make (name); | |
16839 | S_SET_WEAK (symbolP); | |
16840 | *input_line_pointer = c; | |
16841 | ||
16842 | SKIP_WHITESPACE (); | |
16843 | ||
16844 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
16845 | { | |
16846 | if (S_IS_DEFINED (symbolP)) | |
16847 | { | |
20203fb9 | 16848 | as_bad (_("ignoring attempt to redefine symbol %s"), |
252b5132 RH |
16849 | S_GET_NAME (symbolP)); |
16850 | ignore_rest_of_line (); | |
16851 | return; | |
16852 | } | |
bdaaa2e1 | 16853 | |
252b5132 RH |
16854 | if (*input_line_pointer == ',') |
16855 | { | |
16856 | ++input_line_pointer; | |
16857 | SKIP_WHITESPACE (); | |
16858 | } | |
bdaaa2e1 | 16859 | |
252b5132 RH |
16860 | expression (&exp); |
16861 | if (exp.X_op != O_symbol) | |
16862 | { | |
20203fb9 | 16863 | as_bad (_("bad .weakext directive")); |
98d3f06f | 16864 | ignore_rest_of_line (); |
252b5132 RH |
16865 | return; |
16866 | } | |
49309057 | 16867 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
16868 | } |
16869 | ||
16870 | demand_empty_rest_of_line (); | |
16871 | } | |
16872 | ||
16873 | /* Parse a register string into a number. Called from the ECOFF code | |
16874 | to parse .frame. The argument is non-zero if this is the frame | |
16875 | register, so that we can record it in mips_frame_reg. */ | |
16876 | ||
16877 | int | |
17a2f251 | 16878 | tc_get_register (int frame) |
252b5132 | 16879 | { |
707bfff6 | 16880 | unsigned int reg; |
252b5132 RH |
16881 | |
16882 | SKIP_WHITESPACE (); | |
707bfff6 TS |
16883 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
16884 | reg = 0; | |
252b5132 | 16885 | if (frame) |
7a621144 DJ |
16886 | { |
16887 | mips_frame_reg = reg != 0 ? reg : SP; | |
16888 | mips_frame_reg_valid = 1; | |
16889 | mips_cprestore_valid = 0; | |
16890 | } | |
252b5132 RH |
16891 | return reg; |
16892 | } | |
16893 | ||
16894 | valueT | |
17a2f251 | 16895 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
16896 | { |
16897 | int align = bfd_get_section_alignment (stdoutput, seg); | |
16898 | ||
b4c71f56 TS |
16899 | if (IS_ELF) |
16900 | { | |
16901 | /* We don't need to align ELF sections to the full alignment. | |
16902 | However, Irix 5 may prefer that we align them at least to a 16 | |
16903 | byte boundary. We don't bother to align the sections if we | |
16904 | are targeted for an embedded system. */ | |
c41e87e3 | 16905 | if (strncmp (TARGET_OS, "elf", 3) == 0) |
b4c71f56 TS |
16906 | return addr; |
16907 | if (align > 4) | |
16908 | align = 4; | |
16909 | } | |
252b5132 RH |
16910 | |
16911 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
16912 | } | |
16913 | ||
16914 | /* Utility routine, called from above as well. If called while the | |
16915 | input file is still being read, it's only an approximation. (For | |
16916 | example, a symbol may later become defined which appeared to be | |
16917 | undefined earlier.) */ | |
16918 | ||
16919 | static int | |
17a2f251 | 16920 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
16921 | { |
16922 | if (sym == 0) | |
16923 | return 0; | |
16924 | ||
4d0d148d | 16925 | if (g_switch_value > 0) |
252b5132 RH |
16926 | { |
16927 | const char *symname; | |
16928 | int change; | |
16929 | ||
c9914766 | 16930 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
16931 | register. It can be if it is smaller than the -G size or if |
16932 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 16933 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
16934 | they can. */ |
16935 | symname = S_GET_NAME (sym); | |
16936 | if (symname != (const char *) NULL | |
16937 | && (strcmp (symname, "eprol") == 0 | |
16938 | || strcmp (symname, "etext") == 0 | |
16939 | || strcmp (symname, "_gp") == 0 | |
16940 | || strcmp (symname, "edata") == 0 | |
16941 | || strcmp (symname, "_fbss") == 0 | |
16942 | || strcmp (symname, "_fdata") == 0 | |
16943 | || strcmp (symname, "_ftext") == 0 | |
16944 | || strcmp (symname, "end") == 0 | |
16945 | || strcmp (symname, "_gp_disp") == 0)) | |
16946 | change = 1; | |
16947 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
16948 | && (0 | |
16949 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
16950 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
16951 | && (symbol_get_obj (sym)->ecoff_extern_size | |
16952 | <= g_switch_value)) | |
252b5132 RH |
16953 | #endif |
16954 | /* We must defer this decision until after the whole | |
16955 | file has been read, since there might be a .extern | |
16956 | after the first use of this symbol. */ | |
16957 | || (before_relaxing | |
16958 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 16959 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
16960 | #endif |
16961 | && S_GET_VALUE (sym) == 0) | |
16962 | || (S_GET_VALUE (sym) != 0 | |
16963 | && S_GET_VALUE (sym) <= g_switch_value))) | |
16964 | change = 0; | |
16965 | else | |
16966 | { | |
16967 | const char *segname; | |
16968 | ||
16969 | segname = segment_name (S_GET_SEGMENT (sym)); | |
9c2799c2 | 16970 | gas_assert (strcmp (segname, ".lit8") != 0 |
252b5132 RH |
16971 | && strcmp (segname, ".lit4") != 0); |
16972 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
16973 | && strcmp (segname, ".sbss") != 0 |
16974 | && strncmp (segname, ".sdata.", 7) != 0 | |
d4dc2f22 TS |
16975 | && strncmp (segname, ".sbss.", 6) != 0 |
16976 | && strncmp (segname, ".gnu.linkonce.sb.", 17) != 0 | |
fba2b7f9 | 16977 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); |
252b5132 RH |
16978 | } |
16979 | return change; | |
16980 | } | |
16981 | else | |
c9914766 | 16982 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
16983 | return 1; |
16984 | } | |
16985 | ||
5919d012 RS |
16986 | |
16987 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
16988 | ||
16989 | static bfd_boolean | |
17a2f251 | 16990 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
16991 | { |
16992 | asection *symsec; | |
5919d012 RS |
16993 | |
16994 | /* Handle the case of a symbol equated to another symbol. */ | |
16995 | while (symbol_equated_reloc_p (sym)) | |
16996 | { | |
16997 | symbolS *n; | |
16998 | ||
5f0fe04b | 16999 | /* It's possible to get a loop here in a badly written program. */ |
5919d012 RS |
17000 | n = symbol_get_value_expression (sym)->X_add_symbol; |
17001 | if (n == sym) | |
17002 | break; | |
17003 | sym = n; | |
17004 | } | |
17005 | ||
df1f3cda DD |
17006 | if (symbol_section_p (sym)) |
17007 | return TRUE; | |
17008 | ||
5919d012 RS |
17009 | symsec = S_GET_SEGMENT (sym); |
17010 | ||
5919d012 RS |
17011 | /* This must duplicate the test in adjust_reloc_syms. */ |
17012 | return (symsec != &bfd_und_section | |
17013 | && symsec != &bfd_abs_section | |
5f0fe04b TS |
17014 | && !bfd_is_com_section (symsec) |
17015 | && !s_is_linkonce (sym, segtype) | |
5919d012 RS |
17016 | #ifdef OBJ_ELF |
17017 | /* A global or weak symbol is treated as external. */ | |
f43abd2b | 17018 | && (!IS_ELF || (! S_IS_WEAK (sym) && ! S_IS_EXTERNAL (sym))) |
5919d012 RS |
17019 | #endif |
17020 | ); | |
17021 | } | |
17022 | ||
17023 | ||
252b5132 RH |
17024 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
17025 | extended opcode. SEC is the section the frag is in. */ | |
17026 | ||
17027 | static int | |
17a2f251 | 17028 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
17029 | { |
17030 | int type; | |
3994f87e | 17031 | const struct mips16_immed_operand *op; |
252b5132 RH |
17032 | offsetT val; |
17033 | int mintiny, maxtiny; | |
17034 | segT symsec; | |
98aa84af | 17035 | fragS *sym_frag; |
252b5132 RH |
17036 | |
17037 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
17038 | return 0; | |
17039 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
17040 | return 1; | |
17041 | ||
17042 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
17043 | op = mips16_immed_operands; | |
17044 | while (op->type != type) | |
17045 | { | |
17046 | ++op; | |
9c2799c2 | 17047 | gas_assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); |
252b5132 RH |
17048 | } |
17049 | ||
17050 | if (op->unsp) | |
17051 | { | |
17052 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
17053 | { | |
17054 | mintiny = 1; | |
17055 | maxtiny = 1 << op->nbits; | |
17056 | } | |
17057 | else | |
17058 | { | |
17059 | mintiny = 0; | |
17060 | maxtiny = (1 << op->nbits) - 1; | |
17061 | } | |
17062 | } | |
17063 | else | |
17064 | { | |
17065 | mintiny = - (1 << (op->nbits - 1)); | |
17066 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
17067 | } | |
17068 | ||
98aa84af | 17069 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 17070 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 17071 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
17072 | |
17073 | if (op->pcrel) | |
17074 | { | |
17075 | addressT addr; | |
17076 | ||
17077 | /* We won't have the section when we are called from | |
17078 | mips_relax_frag. However, we will always have been called | |
17079 | from md_estimate_size_before_relax first. If this is a | |
17080 | branch to a different section, we mark it as such. If SEC is | |
17081 | NULL, and the frag is not marked, then it must be a branch to | |
17082 | the same section. */ | |
17083 | if (sec == NULL) | |
17084 | { | |
17085 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
17086 | return 1; | |
17087 | } | |
17088 | else | |
17089 | { | |
98aa84af | 17090 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
17091 | if (symsec != sec) |
17092 | { | |
17093 | fragp->fr_subtype = | |
17094 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17095 | ||
17096 | /* FIXME: We should support this, and let the linker | |
17097 | catch branches and loads that are out of range. */ | |
17098 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
17099 | _("unsupported PC relative reference to different section")); | |
17100 | ||
17101 | return 1; | |
17102 | } | |
98aa84af AM |
17103 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
17104 | /* Assume non-extended on the first relaxation pass. | |
17105 | The address we have calculated will be bogus if this is | |
17106 | a forward branch to another frag, as the forward frag | |
17107 | will have fr_address == 0. */ | |
17108 | return 0; | |
252b5132 RH |
17109 | } |
17110 | ||
17111 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
17112 | the same section. If the relax_marker of the symbol fragment |
17113 | differs from the relax_marker of this fragment, we have not | |
17114 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
17115 | in STRETCH in order to get a better estimate of the address. |
17116 | This particularly matters because of the shift bits. */ | |
17117 | if (stretch != 0 | |
98aa84af | 17118 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
17119 | { |
17120 | fragS *f; | |
17121 | ||
17122 | /* Adjust stretch for any alignment frag. Note that if have | |
17123 | been expanding the earlier code, the symbol may be | |
17124 | defined in what appears to be an earlier frag. FIXME: | |
17125 | This doesn't handle the fr_subtype field, which specifies | |
17126 | a maximum number of bytes to skip when doing an | |
17127 | alignment. */ | |
98aa84af | 17128 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
17129 | { |
17130 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
17131 | { | |
17132 | if (stretch < 0) | |
17133 | stretch = - ((- stretch) | |
17134 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
17135 | else | |
17136 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
17137 | if (stretch == 0) | |
17138 | break; | |
17139 | } | |
17140 | } | |
17141 | if (f != NULL) | |
17142 | val += stretch; | |
17143 | } | |
17144 | ||
17145 | addr = fragp->fr_address + fragp->fr_fix; | |
17146 | ||
17147 | /* The base address rules are complicated. The base address of | |
17148 | a branch is the following instruction. The base address of a | |
17149 | PC relative load or add is the instruction itself, but if it | |
17150 | is in a delay slot (in which case it can not be extended) use | |
17151 | the address of the instruction whose delay slot it is in. */ | |
17152 | if (type == 'p' || type == 'q') | |
17153 | { | |
17154 | addr += 2; | |
17155 | ||
17156 | /* If we are currently assuming that this frag should be | |
17157 | extended, then, the current address is two bytes | |
bdaaa2e1 | 17158 | higher. */ |
252b5132 RH |
17159 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
17160 | addr += 2; | |
17161 | ||
17162 | /* Ignore the low bit in the target, since it will be set | |
17163 | for a text label. */ | |
17164 | if ((val & 1) != 0) | |
17165 | --val; | |
17166 | } | |
17167 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
17168 | addr -= 4; | |
17169 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
17170 | addr -= 2; | |
17171 | ||
17172 | val -= addr & ~ ((1 << op->shift) - 1); | |
17173 | ||
17174 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
17175 | if (type == 'p' || type == 'q') | |
17176 | val /= 2; | |
17177 | ||
17178 | /* If any of the shifted bits are set, we must use an extended | |
17179 | opcode. If the address depends on the size of this | |
17180 | instruction, this can lead to a loop, so we arrange to always | |
17181 | use an extended opcode. We only check this when we are in | |
17182 | the main relaxation loop, when SEC is NULL. */ | |
17183 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
17184 | { | |
17185 | fragp->fr_subtype = | |
17186 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17187 | return 1; | |
17188 | } | |
17189 | ||
17190 | /* If we are about to mark a frag as extended because the value | |
17191 | is precisely maxtiny + 1, then there is a chance of an | |
17192 | infinite loop as in the following code: | |
17193 | la $4,foo | |
17194 | .skip 1020 | |
17195 | .align 2 | |
17196 | foo: | |
17197 | In this case when the la is extended, foo is 0x3fc bytes | |
17198 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
17199 | the la must be extended. To avoid this loop, we mark the | |
17200 | frag as extended if it was small, and is about to become | |
17201 | extended with a value of maxtiny + 1. */ | |
17202 | if (val == ((maxtiny + 1) << op->shift) | |
17203 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
17204 | && sec == NULL) | |
17205 | { | |
17206 | fragp->fr_subtype = | |
17207 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
17208 | return 1; | |
17209 | } | |
17210 | } | |
17211 | else if (symsec != absolute_section && sec != NULL) | |
17212 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
17213 | ||
17214 | if ((val & ((1 << op->shift) - 1)) != 0 | |
17215 | || val < (mintiny << op->shift) | |
17216 | || val > (maxtiny << op->shift)) | |
17217 | return 1; | |
17218 | else | |
17219 | return 0; | |
17220 | } | |
17221 | ||
4a6a3df4 AO |
17222 | /* Compute the length of a branch sequence, and adjust the |
17223 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
17224 | worst-case length is computed, with UPDATE being used to indicate | |
17225 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
17226 | branch is to be computed. */ | |
17227 | static int | |
17a2f251 | 17228 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 17229 | { |
b34976b6 | 17230 | bfd_boolean toofar; |
4a6a3df4 AO |
17231 | int length; |
17232 | ||
17233 | if (fragp | |
17234 | && S_IS_DEFINED (fragp->fr_symbol) | |
17235 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17236 | { | |
17237 | addressT addr; | |
17238 | offsetT val; | |
17239 | ||
17240 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17241 | ||
17242 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
17243 | ||
17244 | val -= addr; | |
17245 | ||
17246 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
17247 | } | |
17248 | else if (fragp) | |
17249 | /* If the symbol is not defined or it's in a different segment, | |
17250 | assume the user knows what's going on and emit a short | |
17251 | branch. */ | |
b34976b6 | 17252 | toofar = FALSE; |
4a6a3df4 | 17253 | else |
b34976b6 | 17254 | toofar = TRUE; |
4a6a3df4 AO |
17255 | |
17256 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
17257 | fragp->fr_subtype | |
66b3e8da MR |
17258 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_AT (fragp->fr_subtype), |
17259 | RELAX_BRANCH_UNCOND (fragp->fr_subtype), | |
4a6a3df4 AO |
17260 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
17261 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
17262 | toofar); | |
17263 | ||
17264 | length = 4; | |
17265 | if (toofar) | |
17266 | { | |
17267 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
17268 | length += 8; | |
17269 | ||
17270 | if (mips_pic != NO_PIC) | |
17271 | { | |
17272 | /* Additional space for PIC loading of target address. */ | |
17273 | length += 8; | |
17274 | if (mips_opts.isa == ISA_MIPS1) | |
17275 | /* Additional space for $at-stabilizing nop. */ | |
17276 | length += 4; | |
17277 | } | |
17278 | ||
17279 | /* If branch is conditional. */ | |
17280 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
17281 | length += 8; | |
17282 | } | |
b34976b6 | 17283 | |
4a6a3df4 AO |
17284 | return length; |
17285 | } | |
17286 | ||
df58fc94 RS |
17287 | /* Compute the length of a branch sequence, and adjust the |
17288 | RELAX_MICROMIPS_TOOFAR32 bit accordingly. If FRAGP is NULL, the | |
17289 | worst-case length is computed, with UPDATE being used to indicate | |
17290 | whether an unconditional (-1), or regular (0) branch is to be | |
17291 | computed. */ | |
17292 | ||
17293 | static int | |
17294 | relaxed_micromips_32bit_branch_length (fragS *fragp, asection *sec, int update) | |
17295 | { | |
17296 | bfd_boolean toofar; | |
17297 | int length; | |
17298 | ||
17299 | if (fragp | |
17300 | && S_IS_DEFINED (fragp->fr_symbol) | |
17301 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17302 | { | |
17303 | addressT addr; | |
17304 | offsetT val; | |
17305 | ||
17306 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17307 | /* Ignore the low bit in the target, since it will be set | |
17308 | for a text label. */ | |
17309 | if ((val & 1) != 0) | |
17310 | --val; | |
17311 | ||
17312 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
17313 | ||
17314 | val -= addr; | |
17315 | ||
17316 | toofar = val < - (0x8000 << 1) || val >= (0x8000 << 1); | |
17317 | } | |
17318 | else if (fragp) | |
17319 | /* If the symbol is not defined or it's in a different segment, | |
17320 | assume the user knows what's going on and emit a short | |
17321 | branch. */ | |
17322 | toofar = FALSE; | |
17323 | else | |
17324 | toofar = TRUE; | |
17325 | ||
17326 | if (fragp && update | |
17327 | && toofar != RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17328 | fragp->fr_subtype = (toofar | |
17329 | ? RELAX_MICROMIPS_MARK_TOOFAR32 (fragp->fr_subtype) | |
17330 | : RELAX_MICROMIPS_CLEAR_TOOFAR32 (fragp->fr_subtype)); | |
17331 | ||
17332 | length = 4; | |
17333 | if (toofar) | |
17334 | { | |
17335 | bfd_boolean compact_known = fragp != NULL; | |
17336 | bfd_boolean compact = FALSE; | |
17337 | bfd_boolean uncond; | |
17338 | ||
17339 | if (compact_known) | |
17340 | compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); | |
17341 | if (fragp) | |
17342 | uncond = RELAX_MICROMIPS_UNCOND (fragp->fr_subtype); | |
17343 | else | |
17344 | uncond = update < 0; | |
17345 | ||
17346 | /* If label is out of range, we turn branch <br>: | |
17347 | ||
17348 | <br> label # 4 bytes | |
17349 | 0: | |
17350 | ||
17351 | into: | |
17352 | ||
17353 | j label # 4 bytes | |
17354 | nop # 2 bytes if compact && !PIC | |
17355 | 0: | |
17356 | */ | |
17357 | if (mips_pic == NO_PIC && (!compact_known || compact)) | |
17358 | length += 2; | |
17359 | ||
17360 | /* If assembling PIC code, we further turn: | |
17361 | ||
17362 | j label # 4 bytes | |
17363 | ||
17364 | into: | |
17365 | ||
17366 | lw/ld at, %got(label)(gp) # 4 bytes | |
17367 | d/addiu at, %lo(label) # 4 bytes | |
17368 | jr/c at # 2 bytes | |
17369 | */ | |
17370 | if (mips_pic != NO_PIC) | |
17371 | length += 6; | |
17372 | ||
17373 | /* If branch <br> is conditional, we prepend negated branch <brneg>: | |
17374 | ||
17375 | <brneg> 0f # 4 bytes | |
17376 | nop # 2 bytes if !compact | |
17377 | */ | |
17378 | if (!uncond) | |
17379 | length += (compact_known && compact) ? 4 : 6; | |
17380 | } | |
17381 | ||
17382 | return length; | |
17383 | } | |
17384 | ||
17385 | /* Compute the length of a branch, and adjust the RELAX_MICROMIPS_TOOFAR16 | |
17386 | bit accordingly. */ | |
17387 | ||
17388 | static int | |
17389 | relaxed_micromips_16bit_branch_length (fragS *fragp, asection *sec, int update) | |
17390 | { | |
17391 | bfd_boolean toofar; | |
17392 | ||
df58fc94 RS |
17393 | if (fragp |
17394 | && S_IS_DEFINED (fragp->fr_symbol) | |
17395 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
17396 | { | |
17397 | addressT addr; | |
17398 | offsetT val; | |
17399 | int type; | |
17400 | ||
17401 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
17402 | /* Ignore the low bit in the target, since it will be set | |
17403 | for a text label. */ | |
17404 | if ((val & 1) != 0) | |
17405 | --val; | |
17406 | ||
17407 | /* Assume this is a 2-byte branch. */ | |
17408 | addr = fragp->fr_address + fragp->fr_fix + 2; | |
17409 | ||
17410 | /* We try to avoid the infinite loop by not adding 2 more bytes for | |
17411 | long branches. */ | |
17412 | ||
17413 | val -= addr; | |
17414 | ||
17415 | type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
17416 | if (type == 'D') | |
17417 | toofar = val < - (0x200 << 1) || val >= (0x200 << 1); | |
17418 | else if (type == 'E') | |
17419 | toofar = val < - (0x40 << 1) || val >= (0x40 << 1); | |
17420 | else | |
17421 | abort (); | |
17422 | } | |
17423 | else | |
17424 | /* If the symbol is not defined or it's in a different segment, | |
17425 | we emit a normal 32-bit branch. */ | |
17426 | toofar = TRUE; | |
17427 | ||
17428 | if (fragp && update | |
17429 | && toofar != RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
17430 | fragp->fr_subtype | |
17431 | = toofar ? RELAX_MICROMIPS_MARK_TOOFAR16 (fragp->fr_subtype) | |
17432 | : RELAX_MICROMIPS_CLEAR_TOOFAR16 (fragp->fr_subtype); | |
17433 | ||
17434 | if (toofar) | |
17435 | return 4; | |
17436 | ||
17437 | return 2; | |
17438 | } | |
17439 | ||
252b5132 RH |
17440 | /* Estimate the size of a frag before relaxing. Unless this is the |
17441 | mips16, we are not really relaxing here, and the final size is | |
17442 | encoded in the subtype information. For the mips16, we have to | |
17443 | decide whether we are using an extended opcode or not. */ | |
17444 | ||
252b5132 | 17445 | int |
17a2f251 | 17446 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 17447 | { |
5919d012 | 17448 | int change; |
252b5132 | 17449 | |
4a6a3df4 AO |
17450 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17451 | { | |
17452 | ||
b34976b6 AM |
17453 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
17454 | ||
4a6a3df4 AO |
17455 | return fragp->fr_var; |
17456 | } | |
17457 | ||
252b5132 | 17458 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
17459 | /* We don't want to modify the EXTENDED bit here; it might get us |
17460 | into infinite loops. We change it only in mips_relax_frag(). */ | |
17461 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 | 17462 | |
df58fc94 RS |
17463 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17464 | { | |
17465 | int length = 4; | |
17466 | ||
17467 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17468 | length = relaxed_micromips_16bit_branch_length (fragp, segtype, FALSE); | |
17469 | if (length == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17470 | length = relaxed_micromips_32bit_branch_length (fragp, segtype, FALSE); | |
17471 | fragp->fr_var = length; | |
17472 | ||
17473 | return length; | |
17474 | } | |
17475 | ||
252b5132 | 17476 | if (mips_pic == NO_PIC) |
5919d012 | 17477 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 17478 | else if (mips_pic == SVR4_PIC) |
5919d012 | 17479 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
17480 | else if (mips_pic == VXWORKS_PIC) |
17481 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
17482 | change = 0; | |
252b5132 RH |
17483 | else |
17484 | abort (); | |
17485 | ||
17486 | if (change) | |
17487 | { | |
4d7206a2 | 17488 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 17489 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 17490 | } |
4d7206a2 RS |
17491 | else |
17492 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
17493 | } |
17494 | ||
17495 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 17496 | should be converted into a reloc against a section. */ |
252b5132 RH |
17497 | |
17498 | int | |
17a2f251 | 17499 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 17500 | { |
252b5132 RH |
17501 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
17502 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
17503 | return 0; | |
a161fe53 | 17504 | |
252b5132 RH |
17505 | if (fixp->fx_addsy == NULL) |
17506 | return 1; | |
a161fe53 | 17507 | |
de7e6852 RS |
17508 | /* If symbol SYM is in a mergeable section, relocations of the form |
17509 | SYM + 0 can usually be made section-relative. The mergeable data | |
17510 | is then identified by the section offset rather than by the symbol. | |
17511 | ||
17512 | However, if we're generating REL LO16 relocations, the offset is split | |
17513 | between the LO16 and parterning high part relocation. The linker will | |
17514 | need to recalculate the complete offset in order to correctly identify | |
17515 | the merge data. | |
17516 | ||
17517 | The linker has traditionally not looked for the parterning high part | |
17518 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
17519 | placed anywhere. Rather than break backwards compatibility by changing | |
17520 | this, it seems better not to force the issue, and instead keep the | |
17521 | original symbol. This will work with either linker behavior. */ | |
738e5348 | 17522 | if ((lo16_reloc_p (fixp->fx_r_type) |
704803a9 | 17523 | || reloc_needs_lo_p (fixp->fx_r_type)) |
de7e6852 RS |
17524 | && HAVE_IN_PLACE_ADDENDS |
17525 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
17526 | return 0; | |
17527 | ||
ce70d90a MR |
17528 | /* There is no place to store an in-place offset for JALR relocations. |
17529 | Likewise an in-range offset of PC-relative relocations may overflow | |
17530 | the in-place relocatable field if recalculated against the start | |
17531 | address of the symbol's containing section. */ | |
17532 | if (HAVE_IN_PLACE_ADDENDS | |
df58fc94 | 17533 | && (fixp->fx_pcrel || jalr_reloc_p (fixp->fx_r_type))) |
1180b5a4 RS |
17534 | return 0; |
17535 | ||
252b5132 | 17536 | #ifdef OBJ_ELF |
b314ec0e RS |
17537 | /* R_MIPS16_26 relocations against non-MIPS16 functions might resolve |
17538 | to a floating-point stub. The same is true for non-R_MIPS16_26 | |
17539 | relocations against MIPS16 functions; in this case, the stub becomes | |
17540 | the function's canonical address. | |
17541 | ||
17542 | Floating-point stubs are stored in unique .mips16.call.* or | |
17543 | .mips16.fn.* sections. If a stub T for function F is in section S, | |
17544 | the first relocation in section S must be against F; this is how the | |
17545 | linker determines the target function. All relocations that might | |
17546 | resolve to T must also be against F. We therefore have the following | |
17547 | restrictions, which are given in an intentionally-redundant way: | |
17548 | ||
17549 | 1. We cannot reduce R_MIPS16_26 relocations against non-MIPS16 | |
17550 | symbols. | |
17551 | ||
17552 | 2. We cannot reduce a stub's relocations against non-MIPS16 symbols | |
17553 | if that stub might be used. | |
17554 | ||
17555 | 3. We cannot reduce non-R_MIPS16_26 relocations against MIPS16 | |
17556 | symbols. | |
17557 | ||
17558 | 4. We cannot reduce a stub's relocations against MIPS16 symbols if | |
17559 | that stub might be used. | |
17560 | ||
17561 | There is a further restriction: | |
17562 | ||
df58fc94 RS |
17563 | 5. We cannot reduce jump relocations (R_MIPS_26, R_MIPS16_26 or |
17564 | R_MICROMIPS_26_S1) against MIPS16 or microMIPS symbols on | |
17565 | targets with in-place addends; the relocation field cannot | |
b314ec0e RS |
17566 | encode the low bit. |
17567 | ||
df58fc94 RS |
17568 | For simplicity, we deal with (3)-(4) by not reducing _any_ relocation |
17569 | against a MIPS16 symbol. We deal with (5) by by not reducing any | |
17570 | such relocations on REL targets. | |
b314ec0e RS |
17571 | |
17572 | We deal with (1)-(2) by saying that, if there's a R_MIPS16_26 | |
17573 | relocation against some symbol R, no relocation against R may be | |
17574 | reduced. (Note that this deals with (2) as well as (1) because | |
17575 | relocations against global symbols will never be reduced on ELF | |
17576 | targets.) This approach is a little simpler than trying to detect | |
17577 | stub sections, and gives the "all or nothing" per-symbol consistency | |
17578 | that we have for MIPS16 symbols. */ | |
f43abd2b | 17579 | if (IS_ELF |
b314ec0e | 17580 | && fixp->fx_subsy == NULL |
30c09090 | 17581 | && (ELF_ST_IS_MIPS16 (S_GET_OTHER (fixp->fx_addsy)) |
df58fc94 RS |
17582 | || *symbol_get_tc (fixp->fx_addsy) |
17583 | || (HAVE_IN_PLACE_ADDENDS | |
17584 | && ELF_ST_IS_MICROMIPS (S_GET_OTHER (fixp->fx_addsy)) | |
17585 | && jmp_reloc_p (fixp->fx_r_type)))) | |
252b5132 RH |
17586 | return 0; |
17587 | #endif | |
a161fe53 | 17588 | |
252b5132 RH |
17589 | return 1; |
17590 | } | |
17591 | ||
17592 | /* Translate internal representation of relocation info to BFD target | |
17593 | format. */ | |
17594 | ||
17595 | arelent ** | |
17a2f251 | 17596 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
17597 | { |
17598 | static arelent *retval[4]; | |
17599 | arelent *reloc; | |
17600 | bfd_reloc_code_real_type code; | |
17601 | ||
4b0cff4e TS |
17602 | memset (retval, 0, sizeof(retval)); |
17603 | reloc = retval[0] = (arelent *) xcalloc (1, sizeof (arelent)); | |
49309057 ILT |
17604 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
17605 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
17606 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
17607 | ||
bad36eac DJ |
17608 | if (fixp->fx_pcrel) |
17609 | { | |
df58fc94 RS |
17610 | gas_assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2 |
17611 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_7_PCREL_S1 | |
17612 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_10_PCREL_S1 | |
17613 | || fixp->fx_r_type == BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
bad36eac DJ |
17614 | |
17615 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
17616 | Relocations want only the symbol offset. */ | |
17617 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
f43abd2b | 17618 | if (!IS_ELF) |
bad36eac DJ |
17619 | { |
17620 | /* A gruesome hack which is a result of the gruesome gas | |
17621 | reloc handling. What's worse, for COFF (as opposed to | |
17622 | ECOFF), we might need yet another copy of reloc->address. | |
17623 | See bfd_install_relocation. */ | |
17624 | reloc->addend += reloc->address; | |
17625 | } | |
17626 | } | |
17627 | else | |
17628 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 17629 | |
438c16b8 TS |
17630 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
17631 | entry to be used in the relocation's section offset. */ | |
17632 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
17633 | { |
17634 | reloc->address = reloc->addend; | |
17635 | reloc->addend = 0; | |
17636 | } | |
17637 | ||
252b5132 | 17638 | code = fixp->fx_r_type; |
252b5132 | 17639 | |
bad36eac | 17640 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
17641 | if (reloc->howto == NULL) |
17642 | { | |
17643 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
17644 | _("Can not represent %s relocation in this object file format"), | |
17645 | bfd_get_reloc_code_name (code)); | |
17646 | retval[0] = NULL; | |
17647 | } | |
17648 | ||
17649 | return retval; | |
17650 | } | |
17651 | ||
17652 | /* Relax a machine dependent frag. This returns the amount by which | |
17653 | the current size of the frag should change. */ | |
17654 | ||
17655 | int | |
17a2f251 | 17656 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 17657 | { |
4a6a3df4 AO |
17658 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17659 | { | |
17660 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
17661 | |
17662 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
17663 | |
17664 | return fragp->fr_var - old_var; | |
17665 | } | |
17666 | ||
df58fc94 RS |
17667 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) |
17668 | { | |
17669 | offsetT old_var = fragp->fr_var; | |
17670 | offsetT new_var = 4; | |
17671 | ||
17672 | if (RELAX_MICROMIPS_TYPE (fragp->fr_subtype) != 0) | |
17673 | new_var = relaxed_micromips_16bit_branch_length (fragp, sec, TRUE); | |
17674 | if (new_var == 4 && RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype)) | |
17675 | new_var = relaxed_micromips_32bit_branch_length (fragp, sec, TRUE); | |
17676 | fragp->fr_var = new_var; | |
17677 | ||
17678 | return new_var - old_var; | |
17679 | } | |
17680 | ||
252b5132 RH |
17681 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
17682 | return 0; | |
17683 | ||
c4e7957c | 17684 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
17685 | { |
17686 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17687 | return 0; | |
17688 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
17689 | return 2; | |
17690 | } | |
17691 | else | |
17692 | { | |
17693 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
17694 | return 0; | |
17695 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
17696 | return -2; | |
17697 | } | |
17698 | ||
17699 | return 0; | |
17700 | } | |
17701 | ||
17702 | /* Convert a machine dependent frag. */ | |
17703 | ||
17704 | void | |
17a2f251 | 17705 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 17706 | { |
4a6a3df4 AO |
17707 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
17708 | { | |
17709 | bfd_byte *buf; | |
17710 | unsigned long insn; | |
17711 | expressionS exp; | |
17712 | fixS *fixp; | |
b34976b6 | 17713 | |
4a6a3df4 AO |
17714 | buf = (bfd_byte *)fragp->fr_literal + fragp->fr_fix; |
17715 | ||
17716 | if (target_big_endian) | |
17717 | insn = bfd_getb32 (buf); | |
17718 | else | |
17719 | insn = bfd_getl32 (buf); | |
b34976b6 | 17720 | |
4a6a3df4 AO |
17721 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
17722 | { | |
17723 | /* We generate a fixup instead of applying it right now | |
17724 | because, if there are linker relaxations, we're going to | |
17725 | need the relocations. */ | |
17726 | exp.X_op = O_symbol; | |
17727 | exp.X_add_symbol = fragp->fr_symbol; | |
17728 | exp.X_add_number = fragp->fr_offset; | |
17729 | ||
17730 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17731 | 4, &exp, TRUE, BFD_RELOC_16_PCREL_S2); |
4a6a3df4 AO |
17732 | fixp->fx_file = fragp->fr_file; |
17733 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 17734 | |
2132e3a3 | 17735 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17736 | buf += 4; |
17737 | } | |
17738 | else | |
17739 | { | |
17740 | int i; | |
17741 | ||
17742 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
5c4f07ba | 17743 | _("Relaxed out-of-range branch into a jump")); |
4a6a3df4 AO |
17744 | |
17745 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
17746 | goto uncond; | |
17747 | ||
17748 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17749 | { | |
17750 | /* Reverse the branch. */ | |
17751 | switch ((insn >> 28) & 0xf) | |
17752 | { | |
17753 | case 4: | |
17754 | /* bc[0-3][tf]l? and bc1any[24][ft] instructions can | |
17755 | have the condition reversed by tweaking a single | |
17756 | bit, and their opcodes all have 0x4???????. */ | |
9c2799c2 | 17757 | gas_assert ((insn & 0xf1000000) == 0x41000000); |
4a6a3df4 AO |
17758 | insn ^= 0x00010000; |
17759 | break; | |
17760 | ||
17761 | case 0: | |
17762 | /* bltz 0x04000000 bgez 0x04010000 | |
54f4ddb3 | 17763 | bltzal 0x04100000 bgezal 0x04110000 */ |
9c2799c2 | 17764 | gas_assert ((insn & 0xfc0e0000) == 0x04000000); |
4a6a3df4 AO |
17765 | insn ^= 0x00010000; |
17766 | break; | |
b34976b6 | 17767 | |
4a6a3df4 AO |
17768 | case 1: |
17769 | /* beq 0x10000000 bne 0x14000000 | |
54f4ddb3 | 17770 | blez 0x18000000 bgtz 0x1c000000 */ |
4a6a3df4 AO |
17771 | insn ^= 0x04000000; |
17772 | break; | |
17773 | ||
17774 | default: | |
17775 | abort (); | |
17776 | } | |
17777 | } | |
17778 | ||
17779 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
17780 | { | |
17781 | /* Clear the and-link bit. */ | |
9c2799c2 | 17782 | gas_assert ((insn & 0xfc1c0000) == 0x04100000); |
4a6a3df4 | 17783 | |
54f4ddb3 TS |
17784 | /* bltzal 0x04100000 bgezal 0x04110000 |
17785 | bltzall 0x04120000 bgezall 0x04130000 */ | |
4a6a3df4 AO |
17786 | insn &= ~0x00100000; |
17787 | } | |
17788 | ||
17789 | /* Branch over the branch (if the branch was likely) or the | |
17790 | full jump (not likely case). Compute the offset from the | |
17791 | current instruction to branch to. */ | |
17792 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17793 | i = 16; | |
17794 | else | |
17795 | { | |
17796 | /* How many bytes in instructions we've already emitted? */ | |
17797 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
17798 | /* How many bytes in instructions from here to the end? */ | |
17799 | i = fragp->fr_var - i; | |
17800 | } | |
17801 | /* Convert to instruction count. */ | |
17802 | i >>= 2; | |
17803 | /* Branch counts from the next instruction. */ | |
b34976b6 | 17804 | i--; |
4a6a3df4 AO |
17805 | insn |= i; |
17806 | /* Branch over the jump. */ | |
2132e3a3 | 17807 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17808 | buf += 4; |
17809 | ||
54f4ddb3 | 17810 | /* nop */ |
2132e3a3 | 17811 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
17812 | buf += 4; |
17813 | ||
17814 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
17815 | { | |
17816 | /* beql $0, $0, 2f */ | |
17817 | insn = 0x50000000; | |
17818 | /* Compute the PC offset from the current instruction to | |
17819 | the end of the variable frag. */ | |
17820 | /* How many bytes in instructions we've already emitted? */ | |
17821 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
17822 | /* How many bytes in instructions from here to the end? */ | |
17823 | i = fragp->fr_var - i; | |
17824 | /* Convert to instruction count. */ | |
17825 | i >>= 2; | |
17826 | /* Don't decrement i, because we want to branch over the | |
17827 | delay slot. */ | |
17828 | ||
17829 | insn |= i; | |
2132e3a3 | 17830 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17831 | buf += 4; |
17832 | ||
2132e3a3 | 17833 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
17834 | buf += 4; |
17835 | } | |
17836 | ||
17837 | uncond: | |
17838 | if (mips_pic == NO_PIC) | |
17839 | { | |
17840 | /* j or jal. */ | |
17841 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
17842 | ? 0x0c000000 : 0x08000000); | |
17843 | exp.X_op = O_symbol; | |
17844 | exp.X_add_symbol = fragp->fr_symbol; | |
17845 | exp.X_add_number = fragp->fr_offset; | |
17846 | ||
17847 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17848 | 4, &exp, FALSE, BFD_RELOC_MIPS_JMP); |
4a6a3df4 AO |
17849 | fixp->fx_file = fragp->fr_file; |
17850 | fixp->fx_line = fragp->fr_line; | |
17851 | ||
2132e3a3 | 17852 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17853 | buf += 4; |
17854 | } | |
17855 | else | |
17856 | { | |
66b3e8da MR |
17857 | unsigned long at = RELAX_BRANCH_AT (fragp->fr_subtype); |
17858 | ||
4a6a3df4 | 17859 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ |
66b3e8da MR |
17860 | insn = HAVE_64BIT_ADDRESSES ? 0xdf800000 : 0x8f800000; |
17861 | insn |= at << OP_SH_RT; | |
4a6a3df4 AO |
17862 | exp.X_op = O_symbol; |
17863 | exp.X_add_symbol = fragp->fr_symbol; | |
17864 | exp.X_add_number = fragp->fr_offset; | |
17865 | ||
17866 | if (fragp->fr_offset) | |
17867 | { | |
17868 | exp.X_add_symbol = make_expr_symbol (&exp); | |
17869 | exp.X_add_number = 0; | |
17870 | } | |
17871 | ||
17872 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17873 | 4, &exp, FALSE, BFD_RELOC_MIPS_GOT16); |
4a6a3df4 AO |
17874 | fixp->fx_file = fragp->fr_file; |
17875 | fixp->fx_line = fragp->fr_line; | |
17876 | ||
2132e3a3 | 17877 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 | 17878 | buf += 4; |
b34976b6 | 17879 | |
4a6a3df4 AO |
17880 | if (mips_opts.isa == ISA_MIPS1) |
17881 | { | |
17882 | /* nop */ | |
2132e3a3 | 17883 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
17884 | buf += 4; |
17885 | } | |
17886 | ||
17887 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
66b3e8da MR |
17888 | insn = HAVE_64BIT_ADDRESSES ? 0x64000000 : 0x24000000; |
17889 | insn |= at << OP_SH_RS | at << OP_SH_RT; | |
4a6a3df4 AO |
17890 | |
17891 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 17892 | 4, &exp, FALSE, BFD_RELOC_LO16); |
4a6a3df4 AO |
17893 | fixp->fx_file = fragp->fr_file; |
17894 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 17895 | |
2132e3a3 | 17896 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17897 | buf += 4; |
17898 | ||
17899 | /* j(al)r $at. */ | |
17900 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
66b3e8da | 17901 | insn = 0x0000f809; |
4a6a3df4 | 17902 | else |
66b3e8da MR |
17903 | insn = 0x00000008; |
17904 | insn |= at << OP_SH_RS; | |
4a6a3df4 | 17905 | |
2132e3a3 | 17906 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
17907 | buf += 4; |
17908 | } | |
17909 | } | |
17910 | ||
9c2799c2 | 17911 | gas_assert (buf == (bfd_byte *)fragp->fr_literal |
4a6a3df4 AO |
17912 | + fragp->fr_fix + fragp->fr_var); |
17913 | ||
17914 | fragp->fr_fix += fragp->fr_var; | |
17915 | ||
17916 | return; | |
17917 | } | |
17918 | ||
df58fc94 RS |
17919 | /* Relax microMIPS branches. */ |
17920 | if (RELAX_MICROMIPS_P (fragp->fr_subtype)) | |
17921 | { | |
17922 | bfd_byte *buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
17923 | bfd_boolean compact = RELAX_MICROMIPS_COMPACT (fragp->fr_subtype); | |
17924 | bfd_boolean al = RELAX_MICROMIPS_LINK (fragp->fr_subtype); | |
17925 | int type = RELAX_MICROMIPS_TYPE (fragp->fr_subtype); | |
2309ddf2 | 17926 | bfd_boolean short_ds; |
df58fc94 RS |
17927 | unsigned long insn; |
17928 | expressionS exp; | |
17929 | fixS *fixp; | |
17930 | ||
17931 | exp.X_op = O_symbol; | |
17932 | exp.X_add_symbol = fragp->fr_symbol; | |
17933 | exp.X_add_number = fragp->fr_offset; | |
17934 | ||
17935 | fragp->fr_fix += fragp->fr_var; | |
17936 | ||
17937 | /* Handle 16-bit branches that fit or are forced to fit. */ | |
17938 | if (type != 0 && !RELAX_MICROMIPS_TOOFAR16 (fragp->fr_subtype)) | |
17939 | { | |
17940 | /* We generate a fixup instead of applying it right now, | |
17941 | because if there is linker relaxation, we're going to | |
17942 | need the relocations. */ | |
17943 | if (type == 'D') | |
17944 | fixp = fix_new_exp (fragp, | |
17945 | buf - (bfd_byte *) fragp->fr_literal, | |
17946 | 2, &exp, TRUE, | |
17947 | BFD_RELOC_MICROMIPS_10_PCREL_S1); | |
17948 | else if (type == 'E') | |
17949 | fixp = fix_new_exp (fragp, | |
17950 | buf - (bfd_byte *) fragp->fr_literal, | |
17951 | 2, &exp, TRUE, | |
17952 | BFD_RELOC_MICROMIPS_7_PCREL_S1); | |
17953 | else | |
17954 | abort (); | |
17955 | ||
17956 | fixp->fx_file = fragp->fr_file; | |
17957 | fixp->fx_line = fragp->fr_line; | |
17958 | ||
17959 | /* These relocations can have an addend that won't fit in | |
17960 | 2 octets. */ | |
17961 | fixp->fx_no_overflow = 1; | |
17962 | ||
17963 | return; | |
17964 | } | |
17965 | ||
2309ddf2 | 17966 | /* Handle 32-bit branches that fit or are forced to fit. */ |
df58fc94 RS |
17967 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) |
17968 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
17969 | { | |
17970 | /* We generate a fixup instead of applying it right now, | |
17971 | because if there is linker relaxation, we're going to | |
17972 | need the relocations. */ | |
17973 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
17974 | 4, &exp, TRUE, BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
17975 | fixp->fx_file = fragp->fr_file; | |
17976 | fixp->fx_line = fragp->fr_line; | |
17977 | ||
17978 | if (type == 0) | |
17979 | return; | |
17980 | } | |
17981 | ||
17982 | /* Relax 16-bit branches to 32-bit branches. */ | |
17983 | if (type != 0) | |
17984 | { | |
17985 | if (target_big_endian) | |
17986 | insn = bfd_getb16 (buf); | |
17987 | else | |
17988 | insn = bfd_getl16 (buf); | |
17989 | ||
17990 | if ((insn & 0xfc00) == 0xcc00) /* b16 */ | |
17991 | insn = 0x94000000; /* beq */ | |
17992 | else if ((insn & 0xdc00) == 0x8c00) /* beqz16/bnez16 */ | |
17993 | { | |
17994 | unsigned long regno; | |
17995 | ||
17996 | regno = (insn >> MICROMIPSOP_SH_MD) & MICROMIPSOP_MASK_MD; | |
17997 | regno = micromips_to_32_reg_d_map [regno]; | |
17998 | insn = ((insn & 0x2000) << 16) | 0x94000000; /* beq/bne */ | |
17999 | insn |= regno << MICROMIPSOP_SH_RS; | |
18000 | } | |
18001 | else | |
18002 | abort (); | |
18003 | ||
18004 | /* Nothing else to do, just write it out. */ | |
18005 | if (!RELAX_MICROMIPS_RELAX32 (fragp->fr_subtype) | |
18006 | || !RELAX_MICROMIPS_TOOFAR32 (fragp->fr_subtype)) | |
18007 | { | |
18008 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
18009 | buf += 2; | |
18010 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18011 | buf += 2; | |
18012 | ||
18013 | gas_assert (buf == ((bfd_byte *) fragp->fr_literal | |
18014 | + fragp->fr_fix)); | |
18015 | return; | |
18016 | } | |
18017 | } | |
18018 | else | |
18019 | { | |
18020 | unsigned long next; | |
18021 | ||
18022 | if (target_big_endian) | |
18023 | { | |
18024 | insn = bfd_getb16 (buf); | |
18025 | next = bfd_getb16 (buf + 2); | |
18026 | } | |
18027 | else | |
18028 | { | |
18029 | insn = bfd_getl16 (buf); | |
18030 | next = bfd_getl16 (buf + 2); | |
18031 | } | |
18032 | insn = (insn << 16) | next; | |
18033 | } | |
18034 | ||
18035 | /* Relax 32-bit branches to a sequence of instructions. */ | |
18036 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
18037 | _("Relaxed out-of-range branch into a jump")); | |
18038 | ||
2309ddf2 MR |
18039 | /* Set the short-delay-slot bit. */ |
18040 | short_ds = al && (insn & 0x02000000) != 0; | |
df58fc94 RS |
18041 | |
18042 | if (!RELAX_MICROMIPS_UNCOND (fragp->fr_subtype)) | |
18043 | { | |
18044 | symbolS *l; | |
18045 | ||
18046 | /* Reverse the branch. */ | |
18047 | if ((insn & 0xfc000000) == 0x94000000 /* beq */ | |
18048 | || (insn & 0xfc000000) == 0xb4000000) /* bne */ | |
18049 | insn ^= 0x20000000; | |
18050 | else if ((insn & 0xffe00000) == 0x40000000 /* bltz */ | |
18051 | || (insn & 0xffe00000) == 0x40400000 /* bgez */ | |
18052 | || (insn & 0xffe00000) == 0x40800000 /* blez */ | |
18053 | || (insn & 0xffe00000) == 0x40c00000 /* bgtz */ | |
18054 | || (insn & 0xffe00000) == 0x40a00000 /* bnezc */ | |
18055 | || (insn & 0xffe00000) == 0x40e00000 /* beqzc */ | |
18056 | || (insn & 0xffe00000) == 0x40200000 /* bltzal */ | |
18057 | || (insn & 0xffe00000) == 0x40600000 /* bgezal */ | |
18058 | || (insn & 0xffe00000) == 0x42200000 /* bltzals */ | |
18059 | || (insn & 0xffe00000) == 0x42600000) /* bgezals */ | |
18060 | insn ^= 0x00400000; | |
18061 | else if ((insn & 0xffe30000) == 0x43800000 /* bc1f */ | |
18062 | || (insn & 0xffe30000) == 0x43a00000 /* bc1t */ | |
18063 | || (insn & 0xffe30000) == 0x42800000 /* bc2f */ | |
18064 | || (insn & 0xffe30000) == 0x42a00000) /* bc2t */ | |
18065 | insn ^= 0x00200000; | |
18066 | else | |
18067 | abort (); | |
18068 | ||
18069 | if (al) | |
18070 | { | |
18071 | /* Clear the and-link and short-delay-slot bits. */ | |
18072 | gas_assert ((insn & 0xfda00000) == 0x40200000); | |
18073 | ||
18074 | /* bltzal 0x40200000 bgezal 0x40600000 */ | |
18075 | /* bltzals 0x42200000 bgezals 0x42600000 */ | |
18076 | insn &= ~0x02200000; | |
18077 | } | |
18078 | ||
18079 | /* Make a label at the end for use with the branch. */ | |
18080 | l = symbol_new (micromips_label_name (), asec, fragp->fr_fix, fragp); | |
18081 | micromips_label_inc (); | |
18082 | #if defined(OBJ_ELF) || defined(OBJ_MAYBE_ELF) | |
18083 | if (IS_ELF) | |
18084 | S_SET_OTHER (l, ELF_ST_SET_MICROMIPS (S_GET_OTHER (l))); | |
18085 | #endif | |
18086 | ||
18087 | /* Refer to it. */ | |
18088 | fixp = fix_new (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
18089 | 4, l, 0, TRUE, BFD_RELOC_MICROMIPS_16_PCREL_S1); | |
18090 | fixp->fx_file = fragp->fr_file; | |
18091 | fixp->fx_line = fragp->fr_line; | |
18092 | ||
18093 | /* Branch over the jump. */ | |
18094 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
18095 | buf += 2; | |
18096 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18097 | buf += 2; | |
18098 | ||
18099 | if (!compact) | |
18100 | { | |
18101 | /* nop */ | |
18102 | insn = 0x0c00; | |
18103 | md_number_to_chars ((char *) buf, insn, 2); | |
18104 | buf += 2; | |
18105 | } | |
18106 | } | |
18107 | ||
18108 | if (mips_pic == NO_PIC) | |
18109 | { | |
2309ddf2 MR |
18110 | unsigned long jal = short_ds ? 0x74000000 : 0xf4000000; /* jal/s */ |
18111 | ||
df58fc94 RS |
18112 | /* j/jal/jals <sym> R_MICROMIPS_26_S1 */ |
18113 | insn = al ? jal : 0xd4000000; | |
18114 | ||
18115 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
18116 | 4, &exp, FALSE, BFD_RELOC_MICROMIPS_JMP); | |
18117 | fixp->fx_file = fragp->fr_file; | |
18118 | fixp->fx_line = fragp->fr_line; | |
18119 | ||
18120 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
18121 | buf += 2; | |
18122 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18123 | buf += 2; | |
18124 | ||
18125 | if (compact) | |
18126 | { | |
18127 | /* nop */ | |
18128 | insn = 0x0c00; | |
18129 | md_number_to_chars ((char *) buf, insn, 2); | |
18130 | buf += 2; | |
18131 | } | |
18132 | } | |
18133 | else | |
18134 | { | |
18135 | unsigned long at = RELAX_MICROMIPS_AT (fragp->fr_subtype); | |
2309ddf2 MR |
18136 | unsigned long jalr = short_ds ? 0x45e0 : 0x45c0; /* jalr/s */ |
18137 | unsigned long jr = compact ? 0x45a0 : 0x4580; /* jr/c */ | |
df58fc94 RS |
18138 | |
18139 | /* lw/ld $at, <sym>($gp) R_MICROMIPS_GOT16 */ | |
18140 | insn = HAVE_64BIT_ADDRESSES ? 0xdc1c0000 : 0xfc1c0000; | |
18141 | insn |= at << MICROMIPSOP_SH_RT; | |
18142 | ||
18143 | if (exp.X_add_number) | |
18144 | { | |
18145 | exp.X_add_symbol = make_expr_symbol (&exp); | |
18146 | exp.X_add_number = 0; | |
18147 | } | |
18148 | ||
18149 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
18150 | 4, &exp, FALSE, BFD_RELOC_MICROMIPS_GOT16); | |
18151 | fixp->fx_file = fragp->fr_file; | |
18152 | fixp->fx_line = fragp->fr_line; | |
18153 | ||
18154 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
18155 | buf += 2; | |
18156 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18157 | buf += 2; | |
18158 | ||
18159 | /* d/addiu $at, $at, <sym> R_MICROMIPS_LO16 */ | |
18160 | insn = HAVE_64BIT_ADDRESSES ? 0x5c000000 : 0x30000000; | |
18161 | insn |= at << MICROMIPSOP_SH_RT | at << MICROMIPSOP_SH_RS; | |
18162 | ||
18163 | fixp = fix_new_exp (fragp, buf - (bfd_byte *) fragp->fr_literal, | |
18164 | 4, &exp, FALSE, BFD_RELOC_MICROMIPS_LO16); | |
18165 | fixp->fx_file = fragp->fr_file; | |
18166 | fixp->fx_line = fragp->fr_line; | |
18167 | ||
18168 | md_number_to_chars ((char *) buf, insn >> 16, 2); | |
18169 | buf += 2; | |
18170 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18171 | buf += 2; | |
18172 | ||
18173 | /* jr/jrc/jalr/jalrs $at */ | |
18174 | insn = al ? jalr : jr; | |
18175 | insn |= at << MICROMIPSOP_SH_MJ; | |
18176 | ||
18177 | md_number_to_chars ((char *) buf, insn & 0xffff, 2); | |
18178 | buf += 2; | |
18179 | } | |
18180 | ||
18181 | gas_assert (buf == (bfd_byte *) fragp->fr_literal + fragp->fr_fix); | |
18182 | return; | |
18183 | } | |
18184 | ||
252b5132 RH |
18185 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
18186 | { | |
18187 | int type; | |
3994f87e | 18188 | const struct mips16_immed_operand *op; |
b34976b6 | 18189 | bfd_boolean small, ext; |
252b5132 RH |
18190 | offsetT val; |
18191 | bfd_byte *buf; | |
18192 | unsigned long insn; | |
b34976b6 | 18193 | bfd_boolean use_extend; |
252b5132 RH |
18194 | unsigned short extend; |
18195 | ||
18196 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
18197 | op = mips16_immed_operands; | |
18198 | while (op->type != type) | |
18199 | ++op; | |
18200 | ||
18201 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
18202 | { | |
b34976b6 AM |
18203 | small = FALSE; |
18204 | ext = TRUE; | |
252b5132 RH |
18205 | } |
18206 | else | |
18207 | { | |
b34976b6 AM |
18208 | small = TRUE; |
18209 | ext = FALSE; | |
252b5132 RH |
18210 | } |
18211 | ||
5f5f22c0 | 18212 | val = resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
18213 | if (op->pcrel) |
18214 | { | |
18215 | addressT addr; | |
18216 | ||
18217 | addr = fragp->fr_address + fragp->fr_fix; | |
18218 | ||
18219 | /* The rules for the base address of a PC relative reloc are | |
18220 | complicated; see mips16_extended_frag. */ | |
18221 | if (type == 'p' || type == 'q') | |
18222 | { | |
18223 | addr += 2; | |
18224 | if (ext) | |
18225 | addr += 2; | |
18226 | /* Ignore the low bit in the target, since it will be | |
18227 | set for a text label. */ | |
18228 | if ((val & 1) != 0) | |
18229 | --val; | |
18230 | } | |
18231 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
18232 | addr -= 4; | |
18233 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
18234 | addr -= 2; | |
18235 | ||
18236 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
18237 | val -= addr; | |
18238 | ||
18239 | /* Make sure the section winds up with the alignment we have | |
18240 | assumed. */ | |
18241 | if (op->shift > 0) | |
18242 | record_alignment (asec, op->shift); | |
18243 | } | |
18244 | ||
18245 | if (ext | |
18246 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
18247 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
18248 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
18249 | _("extended instruction in delay slot")); | |
18250 | ||
18251 | buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
18252 | ||
18253 | if (target_big_endian) | |
18254 | insn = bfd_getb16 (buf); | |
18255 | else | |
18256 | insn = bfd_getl16 (buf); | |
18257 | ||
18258 | mips16_immed (fragp->fr_file, fragp->fr_line, type, val, | |
18259 | RELAX_MIPS16_USER_EXT (fragp->fr_subtype), | |
18260 | small, ext, &insn, &use_extend, &extend); | |
18261 | ||
18262 | if (use_extend) | |
18263 | { | |
2132e3a3 | 18264 | md_number_to_chars ((char *) buf, 0xf000 | extend, 2); |
252b5132 RH |
18265 | fragp->fr_fix += 2; |
18266 | buf += 2; | |
18267 | } | |
18268 | ||
2132e3a3 | 18269 | md_number_to_chars ((char *) buf, insn, 2); |
252b5132 RH |
18270 | fragp->fr_fix += 2; |
18271 | buf += 2; | |
18272 | } | |
18273 | else | |
18274 | { | |
df58fc94 RS |
18275 | relax_substateT subtype = fragp->fr_subtype; |
18276 | bfd_boolean second_longer = (subtype & RELAX_SECOND_LONGER) != 0; | |
18277 | bfd_boolean use_second = (subtype & RELAX_USE_SECOND) != 0; | |
4d7206a2 RS |
18278 | int first, second; |
18279 | fixS *fixp; | |
252b5132 | 18280 | |
df58fc94 RS |
18281 | first = RELAX_FIRST (subtype); |
18282 | second = RELAX_SECOND (subtype); | |
4d7206a2 | 18283 | fixp = (fixS *) fragp->fr_opcode; |
252b5132 | 18284 | |
df58fc94 RS |
18285 | /* If the delay slot chosen does not match the size of the instruction, |
18286 | then emit a warning. */ | |
18287 | if ((!use_second && (subtype & RELAX_DELAY_SLOT_SIZE_FIRST) != 0) | |
18288 | || (use_second && (subtype & RELAX_DELAY_SLOT_SIZE_SECOND) != 0)) | |
18289 | { | |
18290 | relax_substateT s; | |
18291 | const char *msg; | |
18292 | ||
18293 | s = subtype & (RELAX_DELAY_SLOT_16BIT | |
18294 | | RELAX_DELAY_SLOT_SIZE_FIRST | |
18295 | | RELAX_DELAY_SLOT_SIZE_SECOND); | |
18296 | msg = macro_warning (s); | |
18297 | if (msg != NULL) | |
db9b2be4 | 18298 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 RS |
18299 | subtype &= ~s; |
18300 | } | |
18301 | ||
584892a6 | 18302 | /* Possibly emit a warning if we've chosen the longer option. */ |
df58fc94 | 18303 | if (use_second == second_longer) |
584892a6 | 18304 | { |
df58fc94 RS |
18305 | relax_substateT s; |
18306 | const char *msg; | |
18307 | ||
18308 | s = (subtype | |
18309 | & (RELAX_SECOND_LONGER | RELAX_NOMACRO | RELAX_DELAY_SLOT)); | |
18310 | msg = macro_warning (s); | |
18311 | if (msg != NULL) | |
db9b2be4 | 18312 | as_warn_where (fragp->fr_file, fragp->fr_line, "%s", msg); |
df58fc94 | 18313 | subtype &= ~s; |
584892a6 RS |
18314 | } |
18315 | ||
4d7206a2 RS |
18316 | /* Go through all the fixups for the first sequence. Disable them |
18317 | (by marking them as done) if we're going to use the second | |
18318 | sequence instead. */ | |
18319 | while (fixp | |
18320 | && fixp->fx_frag == fragp | |
18321 | && fixp->fx_where < fragp->fr_fix - second) | |
18322 | { | |
df58fc94 | 18323 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18324 | fixp->fx_done = 1; |
18325 | fixp = fixp->fx_next; | |
18326 | } | |
252b5132 | 18327 | |
4d7206a2 RS |
18328 | /* Go through the fixups for the second sequence. Disable them if |
18329 | we're going to use the first sequence, otherwise adjust their | |
18330 | addresses to account for the relaxation. */ | |
18331 | while (fixp && fixp->fx_frag == fragp) | |
18332 | { | |
df58fc94 | 18333 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18334 | fixp->fx_where -= first; |
18335 | else | |
18336 | fixp->fx_done = 1; | |
18337 | fixp = fixp->fx_next; | |
18338 | } | |
18339 | ||
18340 | /* Now modify the frag contents. */ | |
df58fc94 | 18341 | if (subtype & RELAX_USE_SECOND) |
4d7206a2 RS |
18342 | { |
18343 | char *start; | |
18344 | ||
18345 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
18346 | memmove (start, start + first, second); | |
18347 | fragp->fr_fix -= first; | |
18348 | } | |
18349 | else | |
18350 | fragp->fr_fix -= second; | |
252b5132 RH |
18351 | } |
18352 | } | |
18353 | ||
18354 | #ifdef OBJ_ELF | |
18355 | ||
18356 | /* This function is called after the relocs have been generated. | |
18357 | We've been storing mips16 text labels as odd. Here we convert them | |
18358 | back to even for the convenience of the debugger. */ | |
18359 | ||
18360 | void | |
17a2f251 | 18361 | mips_frob_file_after_relocs (void) |
252b5132 RH |
18362 | { |
18363 | asymbol **syms; | |
18364 | unsigned int count, i; | |
18365 | ||
f43abd2b | 18366 | if (!IS_ELF) |
252b5132 RH |
18367 | return; |
18368 | ||
18369 | syms = bfd_get_outsymbols (stdoutput); | |
18370 | count = bfd_get_symcount (stdoutput); | |
18371 | for (i = 0; i < count; i++, syms++) | |
df58fc94 RS |
18372 | if (ELF_ST_IS_COMPRESSED (elf_symbol (*syms)->internal_elf_sym.st_other) |
18373 | && ((*syms)->value & 1) != 0) | |
18374 | { | |
18375 | (*syms)->value &= ~1; | |
18376 | /* If the symbol has an odd size, it was probably computed | |
18377 | incorrectly, so adjust that as well. */ | |
18378 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
18379 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
18380 | } | |
252b5132 RH |
18381 | } |
18382 | ||
18383 | #endif | |
18384 | ||
a1facbec MR |
18385 | /* This function is called whenever a label is defined, including fake |
18386 | labels instantiated off the dot special symbol. It is used when | |
18387 | handling branch delays; if a branch has a label, we assume we cannot | |
18388 | move it. This also bumps the value of the symbol by 1 in compressed | |
18389 | code. */ | |
252b5132 RH |
18390 | |
18391 | void | |
a1facbec | 18392 | mips_record_label (symbolS *sym) |
252b5132 | 18393 | { |
a8dbcb85 | 18394 | segment_info_type *si = seg_info (now_seg); |
252b5132 RH |
18395 | struct insn_label_list *l; |
18396 | ||
18397 | if (free_insn_labels == NULL) | |
18398 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
18399 | else | |
18400 | { | |
18401 | l = free_insn_labels; | |
18402 | free_insn_labels = l->next; | |
18403 | } | |
18404 | ||
18405 | l->label = sym; | |
a8dbcb85 TS |
18406 | l->next = si->label_list; |
18407 | si->label_list = l; | |
a1facbec | 18408 | } |
07a53e5c | 18409 | |
a1facbec MR |
18410 | /* This function is called as tc_frob_label() whenever a label is defined |
18411 | and adds a DWARF-2 record we only want for true labels. */ | |
18412 | ||
18413 | void | |
18414 | mips_define_label (symbolS *sym) | |
18415 | { | |
18416 | mips_record_label (sym); | |
07a53e5c RH |
18417 | #ifdef OBJ_ELF |
18418 | dwarf2_emit_label (sym); | |
18419 | #endif | |
252b5132 RH |
18420 | } |
18421 | \f | |
18422 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
18423 | ||
18424 | /* Some special processing for a MIPS ELF file. */ | |
18425 | ||
18426 | void | |
17a2f251 | 18427 | mips_elf_final_processing (void) |
252b5132 RH |
18428 | { |
18429 | /* Write out the register information. */ | |
316f5878 | 18430 | if (mips_abi != N64_ABI) |
252b5132 RH |
18431 | { |
18432 | Elf32_RegInfo s; | |
18433 | ||
18434 | s.ri_gprmask = mips_gprmask; | |
18435 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18436 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18437 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18438 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18439 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18440 | ||
18441 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
18442 | ((Elf32_External_RegInfo *) | |
18443 | mips_regmask_frag)); | |
18444 | } | |
18445 | else | |
18446 | { | |
18447 | Elf64_Internal_RegInfo s; | |
18448 | ||
18449 | s.ri_gprmask = mips_gprmask; | |
18450 | s.ri_pad = 0; | |
18451 | s.ri_cprmask[0] = mips_cprmask[0]; | |
18452 | s.ri_cprmask[1] = mips_cprmask[1]; | |
18453 | s.ri_cprmask[2] = mips_cprmask[2]; | |
18454 | s.ri_cprmask[3] = mips_cprmask[3]; | |
18455 | /* The gp_value field is set by the MIPS ELF backend. */ | |
18456 | ||
18457 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
18458 | ((Elf64_External_RegInfo *) | |
18459 | mips_regmask_frag)); | |
18460 | } | |
18461 | ||
18462 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
18463 | sort of BFD interface for this. */ | |
18464 | if (mips_any_noreorder) | |
18465 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
18466 | if (mips_pic != NO_PIC) | |
143d77c5 | 18467 | { |
8b828383 | 18468 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
18469 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
18470 | } | |
18471 | if (mips_abicalls) | |
18472 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 18473 | |
98d3f06f | 18474 | /* Set MIPS ELF flags for ASEs. */ |
74cd071d CF |
18475 | /* We may need to define a new flag for DSP ASE, and set this flag when |
18476 | file_ase_dsp is true. */ | |
8b082fb1 | 18477 | /* Same for DSP R2. */ |
ef2e4d86 CF |
18478 | /* We may need to define a new flag for MT ASE, and set this flag when |
18479 | file_ase_mt is true. */ | |
a4672219 TS |
18480 | if (file_ase_mips16) |
18481 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
df58fc94 RS |
18482 | if (file_ase_micromips) |
18483 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MICROMIPS; | |
1f25f5d3 CD |
18484 | #if 0 /* XXX FIXME */ |
18485 | if (file_ase_mips3d) | |
18486 | elf_elfheader (stdoutput)->e_flags |= ???; | |
18487 | #endif | |
deec1734 CD |
18488 | if (file_ase_mdmx) |
18489 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 18490 | |
bdaaa2e1 | 18491 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 18492 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 18493 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 18494 | else if (mips_abi == O64_ABI) |
252b5132 | 18495 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 18496 | else if (mips_abi == EABI_ABI) |
252b5132 | 18497 | { |
316f5878 | 18498 | if (!file_mips_gp32) |
252b5132 RH |
18499 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
18500 | else | |
18501 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
18502 | } | |
316f5878 | 18503 | else if (mips_abi == N32_ABI) |
be00bddd TS |
18504 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
18505 | ||
c9914766 | 18506 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
18507 | |
18508 | if (mips_32bitmode) | |
18509 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 TS |
18510 | |
18511 | #if 0 /* XXX FIXME */ | |
18512 | /* 32 bit code with 64 bit FP registers. */ | |
18513 | if (!file_mips_fp32 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
18514 | elf_elfheader (stdoutput)->e_flags |= ???; | |
18515 | #endif | |
252b5132 RH |
18516 | } |
18517 | ||
18518 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
18519 | \f | |
beae10d5 | 18520 | typedef struct proc { |
9b2f1d35 EC |
18521 | symbolS *func_sym; |
18522 | symbolS *func_end_sym; | |
beae10d5 KH |
18523 | unsigned long reg_mask; |
18524 | unsigned long reg_offset; | |
18525 | unsigned long fpreg_mask; | |
18526 | unsigned long fpreg_offset; | |
18527 | unsigned long frame_offset; | |
18528 | unsigned long frame_reg; | |
18529 | unsigned long pc_reg; | |
18530 | } procS; | |
252b5132 RH |
18531 | |
18532 | static procS cur_proc; | |
18533 | static procS *cur_proc_ptr; | |
18534 | static int numprocs; | |
18535 | ||
df58fc94 RS |
18536 | /* Implement NOP_OPCODE. We encode a MIPS16 nop as "1", a microMIPS nop |
18537 | as "2", and a normal nop as "0". */ | |
18538 | ||
18539 | #define NOP_OPCODE_MIPS 0 | |
18540 | #define NOP_OPCODE_MIPS16 1 | |
18541 | #define NOP_OPCODE_MICROMIPS 2 | |
742a56fe RS |
18542 | |
18543 | char | |
18544 | mips_nop_opcode (void) | |
18545 | { | |
df58fc94 RS |
18546 | if (seg_info (now_seg)->tc_segment_info_data.micromips) |
18547 | return NOP_OPCODE_MICROMIPS; | |
18548 | else if (seg_info (now_seg)->tc_segment_info_data.mips16) | |
18549 | return NOP_OPCODE_MIPS16; | |
18550 | else | |
18551 | return NOP_OPCODE_MIPS; | |
742a56fe RS |
18552 | } |
18553 | ||
df58fc94 RS |
18554 | /* Fill in an rs_align_code fragment. Unlike elsewhere we want to use |
18555 | 32-bit microMIPS NOPs here (if applicable). */ | |
a19d8eb0 | 18556 | |
0a9ef439 | 18557 | void |
17a2f251 | 18558 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 18559 | { |
df58fc94 | 18560 | char nop_opcode; |
742a56fe | 18561 | char *p; |
c67a084a NC |
18562 | int bytes, size, excess; |
18563 | valueT opcode; | |
742a56fe | 18564 | |
0a9ef439 RH |
18565 | if (fragp->fr_type != rs_align_code) |
18566 | return; | |
18567 | ||
742a56fe | 18568 | p = fragp->fr_literal + fragp->fr_fix; |
df58fc94 RS |
18569 | nop_opcode = *p; |
18570 | switch (nop_opcode) | |
a19d8eb0 | 18571 | { |
df58fc94 RS |
18572 | case NOP_OPCODE_MICROMIPS: |
18573 | opcode = micromips_nop32_insn.insn_opcode; | |
18574 | size = 4; | |
18575 | break; | |
18576 | case NOP_OPCODE_MIPS16: | |
c67a084a NC |
18577 | opcode = mips16_nop_insn.insn_opcode; |
18578 | size = 2; | |
df58fc94 RS |
18579 | break; |
18580 | case NOP_OPCODE_MIPS: | |
18581 | default: | |
c67a084a NC |
18582 | opcode = nop_insn.insn_opcode; |
18583 | size = 4; | |
df58fc94 | 18584 | break; |
c67a084a | 18585 | } |
a19d8eb0 | 18586 | |
c67a084a NC |
18587 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
18588 | excess = bytes % size; | |
df58fc94 RS |
18589 | |
18590 | /* Handle the leading part if we're not inserting a whole number of | |
18591 | instructions, and make it the end of the fixed part of the frag. | |
18592 | Try to fit in a short microMIPS NOP if applicable and possible, | |
18593 | and use zeroes otherwise. */ | |
18594 | gas_assert (excess < 4); | |
18595 | fragp->fr_fix += excess; | |
18596 | switch (excess) | |
c67a084a | 18597 | { |
df58fc94 RS |
18598 | case 3: |
18599 | *p++ = '\0'; | |
18600 | /* Fall through. */ | |
18601 | case 2: | |
18602 | if (nop_opcode == NOP_OPCODE_MICROMIPS) | |
18603 | { | |
18604 | md_number_to_chars (p, micromips_nop16_insn.insn_opcode, 2); | |
18605 | p += 2; | |
18606 | break; | |
18607 | } | |
18608 | *p++ = '\0'; | |
18609 | /* Fall through. */ | |
18610 | case 1: | |
18611 | *p++ = '\0'; | |
18612 | /* Fall through. */ | |
18613 | case 0: | |
18614 | break; | |
a19d8eb0 | 18615 | } |
c67a084a NC |
18616 | |
18617 | md_number_to_chars (p, opcode, size); | |
18618 | fragp->fr_var = size; | |
a19d8eb0 CP |
18619 | } |
18620 | ||
252b5132 | 18621 | static void |
17a2f251 | 18622 | md_obj_begin (void) |
252b5132 RH |
18623 | { |
18624 | } | |
18625 | ||
18626 | static void | |
17a2f251 | 18627 | md_obj_end (void) |
252b5132 | 18628 | { |
54f4ddb3 | 18629 | /* Check for premature end, nesting errors, etc. */ |
252b5132 | 18630 | if (cur_proc_ptr) |
9a41af64 | 18631 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
18632 | } |
18633 | ||
18634 | static long | |
17a2f251 | 18635 | get_number (void) |
252b5132 RH |
18636 | { |
18637 | int negative = 0; | |
18638 | long val = 0; | |
18639 | ||
18640 | if (*input_line_pointer == '-') | |
18641 | { | |
18642 | ++input_line_pointer; | |
18643 | negative = 1; | |
18644 | } | |
3882b010 | 18645 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 18646 | as_bad (_("expected simple number")); |
252b5132 RH |
18647 | if (input_line_pointer[0] == '0') |
18648 | { | |
18649 | if (input_line_pointer[1] == 'x') | |
18650 | { | |
18651 | input_line_pointer += 2; | |
3882b010 | 18652 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
18653 | { |
18654 | val <<= 4; | |
18655 | val |= hex_value (*input_line_pointer++); | |
18656 | } | |
18657 | return negative ? -val : val; | |
18658 | } | |
18659 | else | |
18660 | { | |
18661 | ++input_line_pointer; | |
3882b010 | 18662 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18663 | { |
18664 | val <<= 3; | |
18665 | val |= *input_line_pointer++ - '0'; | |
18666 | } | |
18667 | return negative ? -val : val; | |
18668 | } | |
18669 | } | |
3882b010 | 18670 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18671 | { |
18672 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
18673 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 18674 | as_warn (_("invalid number")); |
252b5132 RH |
18675 | return -1; |
18676 | } | |
3882b010 | 18677 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
18678 | { |
18679 | val *= 10; | |
18680 | val += *input_line_pointer++ - '0'; | |
18681 | } | |
18682 | return negative ? -val : val; | |
18683 | } | |
18684 | ||
18685 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
18686 | is an initial number which is the ECOFF file index. In the non-ECOFF |
18687 | case .file implies DWARF-2. */ | |
18688 | ||
18689 | static void | |
17a2f251 | 18690 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 18691 | { |
ecb4347a DJ |
18692 | static int first_file_directive = 0; |
18693 | ||
c5dd6aab DJ |
18694 | if (ECOFF_DEBUGGING) |
18695 | { | |
18696 | get_number (); | |
18697 | s_app_file (0); | |
18698 | } | |
18699 | else | |
ecb4347a DJ |
18700 | { |
18701 | char *filename; | |
18702 | ||
18703 | filename = dwarf2_directive_file (0); | |
18704 | ||
18705 | /* Versions of GCC up to 3.1 start files with a ".file" | |
18706 | directive even for stabs output. Make sure that this | |
18707 | ".file" is handled. Note that you need a version of GCC | |
18708 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
18709 | if (filename != NULL && ! first_file_directive) | |
18710 | { | |
18711 | (void) new_logical_line (filename, -1); | |
c04f5787 | 18712 | s_app_file_string (filename, 0); |
ecb4347a DJ |
18713 | } |
18714 | first_file_directive = 1; | |
18715 | } | |
c5dd6aab DJ |
18716 | } |
18717 | ||
18718 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
18719 | |
18720 | static void | |
17a2f251 | 18721 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 18722 | { |
c5dd6aab DJ |
18723 | if (!ECOFF_DEBUGGING) |
18724 | dwarf2_directive_loc (0); | |
252b5132 RH |
18725 | } |
18726 | ||
252b5132 RH |
18727 | /* The .end directive. */ |
18728 | ||
18729 | static void | |
17a2f251 | 18730 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
18731 | { |
18732 | symbolS *p; | |
252b5132 | 18733 | |
7a621144 DJ |
18734 | /* Following functions need their own .frame and .cprestore directives. */ |
18735 | mips_frame_reg_valid = 0; | |
18736 | mips_cprestore_valid = 0; | |
18737 | ||
252b5132 RH |
18738 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
18739 | { | |
18740 | p = get_symbol (); | |
18741 | demand_empty_rest_of_line (); | |
18742 | } | |
18743 | else | |
18744 | p = NULL; | |
18745 | ||
14949570 | 18746 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
18747 | as_warn (_(".end not in text section")); |
18748 | ||
18749 | if (!cur_proc_ptr) | |
18750 | { | |
18751 | as_warn (_(".end directive without a preceding .ent directive.")); | |
18752 | demand_empty_rest_of_line (); | |
18753 | return; | |
18754 | } | |
18755 | ||
18756 | if (p != NULL) | |
18757 | { | |
9c2799c2 | 18758 | gas_assert (S_GET_NAME (p)); |
9b2f1d35 | 18759 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
252b5132 | 18760 | as_warn (_(".end symbol does not match .ent symbol.")); |
ecb4347a DJ |
18761 | |
18762 | if (debug_type == DEBUG_STABS) | |
18763 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
18764 | S_GET_NAME (p)); | |
252b5132 RH |
18765 | } |
18766 | else | |
18767 | as_warn (_(".end directive missing or unknown symbol")); | |
18768 | ||
2132e3a3 | 18769 | #ifdef OBJ_ELF |
9b2f1d35 EC |
18770 | /* Create an expression to calculate the size of the function. */ |
18771 | if (p && cur_proc_ptr) | |
18772 | { | |
18773 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
18774 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
18775 | ||
18776 | obj->size = exp; | |
18777 | exp->X_op = O_subtract; | |
18778 | exp->X_add_symbol = symbol_temp_new_now (); | |
18779 | exp->X_op_symbol = p; | |
18780 | exp->X_add_number = 0; | |
18781 | ||
18782 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
18783 | } | |
18784 | ||
ecb4347a | 18785 | /* Generate a .pdr section. */ |
f43abd2b | 18786 | if (IS_ELF && !ECOFF_DEBUGGING && mips_flag_pdr) |
ecb4347a DJ |
18787 | { |
18788 | segT saved_seg = now_seg; | |
18789 | subsegT saved_subseg = now_subseg; | |
ecb4347a DJ |
18790 | expressionS exp; |
18791 | char *fragp; | |
252b5132 | 18792 | |
252b5132 | 18793 | #ifdef md_flush_pending_output |
ecb4347a | 18794 | md_flush_pending_output (); |
252b5132 RH |
18795 | #endif |
18796 | ||
9c2799c2 | 18797 | gas_assert (pdr_seg); |
ecb4347a | 18798 | subseg_set (pdr_seg, 0); |
252b5132 | 18799 | |
ecb4347a DJ |
18800 | /* Write the symbol. */ |
18801 | exp.X_op = O_symbol; | |
18802 | exp.X_add_symbol = p; | |
18803 | exp.X_add_number = 0; | |
18804 | emit_expr (&exp, 4); | |
252b5132 | 18805 | |
ecb4347a | 18806 | fragp = frag_more (7 * 4); |
252b5132 | 18807 | |
17a2f251 TS |
18808 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
18809 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
18810 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
18811 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
18812 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
18813 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
18814 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 18815 | |
ecb4347a DJ |
18816 | subseg_set (saved_seg, saved_subseg); |
18817 | } | |
18818 | #endif /* OBJ_ELF */ | |
252b5132 RH |
18819 | |
18820 | cur_proc_ptr = NULL; | |
18821 | } | |
18822 | ||
18823 | /* The .aent and .ent directives. */ | |
18824 | ||
18825 | static void | |
17a2f251 | 18826 | s_mips_ent (int aent) |
252b5132 | 18827 | { |
252b5132 | 18828 | symbolS *symbolP; |
252b5132 RH |
18829 | |
18830 | symbolP = get_symbol (); | |
18831 | if (*input_line_pointer == ',') | |
f9419b05 | 18832 | ++input_line_pointer; |
252b5132 | 18833 | SKIP_WHITESPACE (); |
3882b010 | 18834 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 18835 | || *input_line_pointer == '-') |
874e8986 | 18836 | get_number (); |
252b5132 | 18837 | |
14949570 | 18838 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
18839 | as_warn (_(".ent or .aent not in text section.")); |
18840 | ||
18841 | if (!aent && cur_proc_ptr) | |
9a41af64 | 18842 | as_warn (_("missing .end")); |
252b5132 RH |
18843 | |
18844 | if (!aent) | |
18845 | { | |
7a621144 DJ |
18846 | /* This function needs its own .frame and .cprestore directives. */ |
18847 | mips_frame_reg_valid = 0; | |
18848 | mips_cprestore_valid = 0; | |
18849 | ||
252b5132 RH |
18850 | cur_proc_ptr = &cur_proc; |
18851 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
18852 | ||
9b2f1d35 | 18853 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 18854 | |
f9419b05 | 18855 | ++numprocs; |
ecb4347a DJ |
18856 | |
18857 | if (debug_type == DEBUG_STABS) | |
18858 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
18859 | S_GET_NAME (symbolP)); | |
252b5132 RH |
18860 | } |
18861 | ||
7c0fc524 MR |
18862 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
18863 | ||
252b5132 RH |
18864 | demand_empty_rest_of_line (); |
18865 | } | |
18866 | ||
18867 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 18868 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 18869 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 18870 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
18871 | symbol table (in the mdebug section). */ |
18872 | ||
18873 | static void | |
17a2f251 | 18874 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 18875 | { |
ecb4347a | 18876 | #ifdef OBJ_ELF |
f43abd2b | 18877 | if (IS_ELF && !ECOFF_DEBUGGING) |
ecb4347a DJ |
18878 | { |
18879 | long val; | |
252b5132 | 18880 | |
ecb4347a DJ |
18881 | if (cur_proc_ptr == (procS *) NULL) |
18882 | { | |
18883 | as_warn (_(".frame outside of .ent")); | |
18884 | demand_empty_rest_of_line (); | |
18885 | return; | |
18886 | } | |
252b5132 | 18887 | |
ecb4347a DJ |
18888 | cur_proc_ptr->frame_reg = tc_get_register (1); |
18889 | ||
18890 | SKIP_WHITESPACE (); | |
18891 | if (*input_line_pointer++ != ',' | |
18892 | || get_absolute_expression_and_terminator (&val) != ',') | |
18893 | { | |
18894 | as_warn (_("Bad .frame directive")); | |
18895 | --input_line_pointer; | |
18896 | demand_empty_rest_of_line (); | |
18897 | return; | |
18898 | } | |
252b5132 | 18899 | |
ecb4347a DJ |
18900 | cur_proc_ptr->frame_offset = val; |
18901 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 18902 | |
252b5132 | 18903 | demand_empty_rest_of_line (); |
252b5132 | 18904 | } |
ecb4347a DJ |
18905 | else |
18906 | #endif /* OBJ_ELF */ | |
18907 | s_ignore (ignore); | |
252b5132 RH |
18908 | } |
18909 | ||
bdaaa2e1 KH |
18910 | /* The .fmask and .mask directives. If the mdebug section is present |
18911 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 18912 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 18913 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
18914 | make reference to the ecoff symbol table (in the mdebug section). */ |
18915 | ||
18916 | static void | |
17a2f251 | 18917 | s_mips_mask (int reg_type) |
252b5132 | 18918 | { |
ecb4347a | 18919 | #ifdef OBJ_ELF |
f43abd2b | 18920 | if (IS_ELF && !ECOFF_DEBUGGING) |
252b5132 | 18921 | { |
ecb4347a | 18922 | long mask, off; |
252b5132 | 18923 | |
ecb4347a DJ |
18924 | if (cur_proc_ptr == (procS *) NULL) |
18925 | { | |
18926 | as_warn (_(".mask/.fmask outside of .ent")); | |
18927 | demand_empty_rest_of_line (); | |
18928 | return; | |
18929 | } | |
252b5132 | 18930 | |
ecb4347a DJ |
18931 | if (get_absolute_expression_and_terminator (&mask) != ',') |
18932 | { | |
18933 | as_warn (_("Bad .mask/.fmask directive")); | |
18934 | --input_line_pointer; | |
18935 | demand_empty_rest_of_line (); | |
18936 | return; | |
18937 | } | |
252b5132 | 18938 | |
ecb4347a DJ |
18939 | off = get_absolute_expression (); |
18940 | ||
18941 | if (reg_type == 'F') | |
18942 | { | |
18943 | cur_proc_ptr->fpreg_mask = mask; | |
18944 | cur_proc_ptr->fpreg_offset = off; | |
18945 | } | |
18946 | else | |
18947 | { | |
18948 | cur_proc_ptr->reg_mask = mask; | |
18949 | cur_proc_ptr->reg_offset = off; | |
18950 | } | |
18951 | ||
18952 | demand_empty_rest_of_line (); | |
252b5132 RH |
18953 | } |
18954 | else | |
ecb4347a DJ |
18955 | #endif /* OBJ_ELF */ |
18956 | s_ignore (reg_type); | |
252b5132 RH |
18957 | } |
18958 | ||
316f5878 RS |
18959 | /* A table describing all the processors gas knows about. Names are |
18960 | matched in the order listed. | |
e7af610e | 18961 | |
316f5878 RS |
18962 | To ease comparison, please keep this table in the same order as |
18963 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
18964 | static const struct mips_cpu_info mips_cpu_info_table[] = |
18965 | { | |
316f5878 | 18966 | /* Entries for generic ISAs */ |
ad3fea08 TS |
18967 | { "mips1", MIPS_CPU_IS_ISA, ISA_MIPS1, CPU_R3000 }, |
18968 | { "mips2", MIPS_CPU_IS_ISA, ISA_MIPS2, CPU_R6000 }, | |
18969 | { "mips3", MIPS_CPU_IS_ISA, ISA_MIPS3, CPU_R4000 }, | |
18970 | { "mips4", MIPS_CPU_IS_ISA, ISA_MIPS4, CPU_R8000 }, | |
18971 | { "mips5", MIPS_CPU_IS_ISA, ISA_MIPS5, CPU_MIPS5 }, | |
18972 | { "mips32", MIPS_CPU_IS_ISA, ISA_MIPS32, CPU_MIPS32 }, | |
18973 | { "mips32r2", MIPS_CPU_IS_ISA, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
18974 | { "mips64", MIPS_CPU_IS_ISA, ISA_MIPS64, CPU_MIPS64 }, | |
18975 | { "mips64r2", MIPS_CPU_IS_ISA, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
316f5878 RS |
18976 | |
18977 | /* MIPS I */ | |
ad3fea08 TS |
18978 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, |
18979 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
18980 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
18981 | |
18982 | /* MIPS II */ | |
ad3fea08 | 18983 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
18984 | |
18985 | /* MIPS III */ | |
ad3fea08 TS |
18986 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, |
18987 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
18988 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
18989 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
18990 | { "vr4120", 0, ISA_MIPS3, CPU_VR4120 }, | |
18991 | { "vr4130", 0, ISA_MIPS3, CPU_VR4120 }, | |
18992 | { "vr4181", 0, ISA_MIPS3, CPU_R4111 }, | |
18993 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, | |
18994 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
18995 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
18996 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
18997 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
b15591bb AN |
18998 | /* ST Microelectronics Loongson 2E and 2F cores */ |
18999 | { "loongson2e", 0, ISA_MIPS3, CPU_LOONGSON_2E }, | |
19000 | { "loongson2f", 0, ISA_MIPS3, CPU_LOONGSON_2F }, | |
316f5878 RS |
19001 | |
19002 | /* MIPS IV */ | |
ad3fea08 TS |
19003 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, |
19004 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
19005 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
3aa3176b TS |
19006 | { "r14000", 0, ISA_MIPS4, CPU_R14000 }, |
19007 | { "r16000", 0, ISA_MIPS4, CPU_R16000 }, | |
ad3fea08 TS |
19008 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, |
19009 | { "vr5400", 0, ISA_MIPS4, CPU_VR5400 }, | |
19010 | { "vr5500", 0, ISA_MIPS4, CPU_VR5500 }, | |
19011 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, | |
19012 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
19013 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
19014 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
19015 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
19016 | { "rm7000", 0, ISA_MIPS4, CPU_RM7000 }, | |
19017 | { "rm9000", 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
19018 | |
19019 | /* MIPS 32 */ | |
ad3fea08 TS |
19020 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32 }, |
19021 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
19022 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
19023 | { "4ksc", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
19024 | ||
19025 | /* MIPS 32 Release 2 */ | |
19026 | { "4kec", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19027 | { "4kem", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19028 | { "4kep", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19029 | { "4ksd", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19030 | { "m4k", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19031 | { "m4kp", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
b5503c7b MR |
19032 | { "m14k", MIPS_CPU_ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, |
19033 | { "m14kc", MIPS_CPU_ASE_MCU, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
7a795ef4 MR |
19034 | { "m14ke", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2 | MIPS_CPU_ASE_MCU, |
19035 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19036 | { "m14kec", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2 | MIPS_CPU_ASE_MCU, | |
19037 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 19038 | { "24kc", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 19039 | { "24kf2_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 19040 | { "24kf", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
19041 | { "24kf1_1", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
19042 | /* Deprecated forms of the above. */ | |
19043 | { "24kfx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
ad3fea08 | 19044 | { "24kx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 19045 | /* 24KE is a 24K with DSP ASE, other ASEs are optional. */ |
ad3fea08 | 19046 | { "24kec", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 | 19047 | { "24kef2_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 | 19048 | { "24kef", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
0fdf1951 RS |
19049 | { "24kef1_1", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
19050 | /* Deprecated forms of the above. */ | |
19051 | { "24kefx", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
65263ce3 | 19052 | { "24kex", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
01fd108f | 19053 | /* 34K is a 24K with DSP and MT ASE, other ASEs are optional. */ |
a360e743 TS |
19054 | { "34kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19055 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19056 | { "34kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19057 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
19058 | { "34kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19059 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19060 | { "34kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19061 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19062 | /* Deprecated forms of the above. */ | |
19063 | { "34kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19064 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
a360e743 TS |
19065 | { "34kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, |
19066 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
19067 | /* 74K with DSP and DSPR2 ASE, other ASEs are optional. */ |
19068 | { "74kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
19069 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19070 | { "74kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19071 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
19072 | { "74kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19073 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
0fdf1951 RS |
19074 | { "74kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19075 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19076 | { "74kf3_2", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
19077 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19078 | /* Deprecated forms of the above. */ | |
19079 | { "74kfx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, | |
19080 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
01fd108f TS |
19081 | { "74kx", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_DSPR2, |
19082 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
30f8113a SL |
19083 | /* 1004K cores are multiprocessor versions of the 34K. */ |
19084 | { "1004kc", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19085 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19086 | { "1004kf2_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19087 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19088 | { "1004kf", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19089 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
19090 | { "1004kf1_1", MIPS_CPU_ASE_DSP | MIPS_CPU_ASE_MT, | |
19091 | ISA_MIPS32R2, CPU_MIPS32R2 }, | |
32b26a03 | 19092 | |
316f5878 | 19093 | /* MIPS 64 */ |
ad3fea08 TS |
19094 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, |
19095 | { "5kf", 0, ISA_MIPS64, CPU_MIPS64 }, | |
19096 | { "20kc", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
7764b395 | 19097 | { "25kf", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, |
ad3fea08 | 19098 | |
c7a23324 | 19099 | /* Broadcom SB-1 CPU core */ |
65263ce3 TS |
19100 | { "sb1", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, |
19101 | ISA_MIPS64, CPU_SB1 }, | |
1e85aad8 JW |
19102 | /* Broadcom SB-1A CPU core */ |
19103 | { "sb1a", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, | |
19104 | ISA_MIPS64, CPU_SB1 }, | |
d051516a NC |
19105 | |
19106 | { "loongson3a", 0, ISA_MIPS64, CPU_LOONGSON_3A }, | |
e7af610e | 19107 | |
ed163775 MR |
19108 | /* MIPS 64 Release 2 */ |
19109 | ||
967344c6 AN |
19110 | /* Cavium Networks Octeon CPU core */ |
19111 | { "octeon", 0, ISA_MIPS64R2, CPU_OCTEON }, | |
dd6a37e7 | 19112 | { "octeon+", 0, ISA_MIPS64R2, CPU_OCTEONP }, |
432233b3 | 19113 | { "octeon2", 0, ISA_MIPS64R2, CPU_OCTEON2 }, |
967344c6 | 19114 | |
52b6b6b9 JM |
19115 | /* RMI Xlr */ |
19116 | { "xlr", 0, ISA_MIPS64, CPU_XLR }, | |
19117 | ||
316f5878 RS |
19118 | /* End marker */ |
19119 | { NULL, 0, 0, 0 } | |
19120 | }; | |
e7af610e | 19121 | |
84ea6cf2 | 19122 | |
316f5878 RS |
19123 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
19124 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 19125 | |
316f5878 | 19126 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 19127 | |
b34976b6 | 19128 | static bfd_boolean |
17a2f251 | 19129 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
19130 | { |
19131 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
19132 | given++, canonical++; | |
19133 | ||
19134 | return ((*given == 0 && *canonical == 0) | |
19135 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
19136 | } | |
19137 | ||
19138 | ||
19139 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
19140 | CPU name. We've traditionally allowed a lot of variation here. | |
19141 | ||
19142 | Note: this function is shared between GCC and GAS. */ | |
19143 | ||
b34976b6 | 19144 | static bfd_boolean |
17a2f251 | 19145 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
19146 | { |
19147 | /* First see if the name matches exactly, or with a final "000" | |
19148 | turned into "k". */ | |
19149 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 19150 | return TRUE; |
316f5878 RS |
19151 | |
19152 | /* If not, try comparing based on numerical designation alone. | |
19153 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
19154 | if (TOLOWER (*given) == 'r') | |
19155 | given++; | |
19156 | if (!ISDIGIT (*given)) | |
b34976b6 | 19157 | return FALSE; |
316f5878 RS |
19158 | |
19159 | /* Skip over some well-known prefixes in the canonical name, | |
19160 | hoping to find a number there too. */ | |
19161 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
19162 | canonical += 2; | |
19163 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
19164 | canonical += 2; | |
19165 | else if (TOLOWER (canonical[0]) == 'r') | |
19166 | canonical += 1; | |
19167 | ||
19168 | return mips_strict_matching_cpu_name_p (canonical, given); | |
19169 | } | |
19170 | ||
19171 | ||
19172 | /* Parse an option that takes the name of a processor as its argument. | |
19173 | OPTION is the name of the option and CPU_STRING is the argument. | |
19174 | Return the corresponding processor enumeration if the CPU_STRING is | |
19175 | recognized, otherwise report an error and return null. | |
19176 | ||
19177 | A similar function exists in GCC. */ | |
e7af610e NC |
19178 | |
19179 | static const struct mips_cpu_info * | |
17a2f251 | 19180 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 19181 | { |
316f5878 | 19182 | const struct mips_cpu_info *p; |
e7af610e | 19183 | |
316f5878 RS |
19184 | /* 'from-abi' selects the most compatible architecture for the given |
19185 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
19186 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
19187 | version. Look first at the -mgp options, if given, otherwise base | |
19188 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 19189 | |
316f5878 RS |
19190 | Treat NO_ABI like the EABIs. One reason to do this is that the |
19191 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
19192 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
19193 | 'mips64', just as we did in the days before 'from-abi'. */ | |
19194 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
19195 | { | |
19196 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
19197 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
19198 | ||
19199 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
19200 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
19201 | ||
19202 | if (file_mips_gp32 >= 0) | |
19203 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
19204 | ||
19205 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
19206 | ? ISA_MIPS3 | |
19207 | : ISA_MIPS1); | |
19208 | } | |
19209 | ||
19210 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
19211 | if (strcasecmp (cpu_string, "default") == 0) | |
19212 | return 0; | |
19213 | ||
19214 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
19215 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
19216 | return p; | |
19217 | ||
20203fb9 | 19218 | as_bad (_("Bad value (%s) for %s"), cpu_string, option); |
316f5878 | 19219 | return 0; |
e7af610e NC |
19220 | } |
19221 | ||
316f5878 RS |
19222 | /* Return the canonical processor information for ISA (a member of the |
19223 | ISA_MIPS* enumeration). */ | |
19224 | ||
e7af610e | 19225 | static const struct mips_cpu_info * |
17a2f251 | 19226 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
19227 | { |
19228 | int i; | |
19229 | ||
19230 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 19231 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 19232 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
19233 | return (&mips_cpu_info_table[i]); |
19234 | ||
e972090a | 19235 | return NULL; |
e7af610e | 19236 | } |
fef14a42 TS |
19237 | |
19238 | static const struct mips_cpu_info * | |
17a2f251 | 19239 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
19240 | { |
19241 | int i; | |
19242 | ||
19243 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
19244 | if (arch == mips_cpu_info_table[i].cpu) | |
19245 | return (&mips_cpu_info_table[i]); | |
19246 | ||
19247 | return NULL; | |
19248 | } | |
316f5878 RS |
19249 | \f |
19250 | static void | |
17a2f251 | 19251 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
19252 | { |
19253 | if (*first_p) | |
19254 | { | |
19255 | fprintf (stream, "%24s", ""); | |
19256 | *col_p = 24; | |
19257 | } | |
19258 | else | |
19259 | { | |
19260 | fprintf (stream, ", "); | |
19261 | *col_p += 2; | |
19262 | } | |
e7af610e | 19263 | |
316f5878 RS |
19264 | if (*col_p + strlen (string) > 72) |
19265 | { | |
19266 | fprintf (stream, "\n%24s", ""); | |
19267 | *col_p = 24; | |
19268 | } | |
19269 | ||
19270 | fprintf (stream, "%s", string); | |
19271 | *col_p += strlen (string); | |
19272 | ||
19273 | *first_p = 0; | |
19274 | } | |
19275 | ||
19276 | void | |
17a2f251 | 19277 | md_show_usage (FILE *stream) |
e7af610e | 19278 | { |
316f5878 RS |
19279 | int column, first; |
19280 | size_t i; | |
19281 | ||
19282 | fprintf (stream, _("\ | |
19283 | MIPS options:\n\ | |
316f5878 RS |
19284 | -EB generate big endian output\n\ |
19285 | -EL generate little endian output\n\ | |
19286 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
19287 | -G NUM allow referencing objects up to NUM bytes\n\ | |
19288 | implicitly with the gp register [default 8]\n")); | |
19289 | fprintf (stream, _("\ | |
19290 | -mips1 generate MIPS ISA I instructions\n\ | |
19291 | -mips2 generate MIPS ISA II instructions\n\ | |
19292 | -mips3 generate MIPS ISA III instructions\n\ | |
19293 | -mips4 generate MIPS ISA IV instructions\n\ | |
19294 | -mips5 generate MIPS ISA V instructions\n\ | |
19295 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 19296 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 | 19297 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 19298 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
316f5878 RS |
19299 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
19300 | ||
19301 | first = 1; | |
e7af610e NC |
19302 | |
19303 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
19304 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
19305 | show (stream, "from-abi", &column, &first); | |
19306 | fputc ('\n', stream); | |
e7af610e | 19307 | |
316f5878 RS |
19308 | fprintf (stream, _("\ |
19309 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
19310 | -no-mCPU don't generate code specific to CPU.\n\ | |
19311 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
19312 | ||
19313 | first = 1; | |
19314 | ||
19315 | show (stream, "3900", &column, &first); | |
19316 | show (stream, "4010", &column, &first); | |
19317 | show (stream, "4100", &column, &first); | |
19318 | show (stream, "4650", &column, &first); | |
19319 | fputc ('\n', stream); | |
19320 | ||
19321 | fprintf (stream, _("\ | |
19322 | -mips16 generate mips16 instructions\n\ | |
19323 | -no-mips16 do not generate mips16 instructions\n")); | |
19324 | fprintf (stream, _("\ | |
df58fc94 RS |
19325 | -mmicromips generate microMIPS instructions\n\ |
19326 | -mno-micromips do not generate microMIPS instructions\n")); | |
19327 | fprintf (stream, _("\ | |
e16bfa71 TS |
19328 | -msmartmips generate smartmips instructions\n\ |
19329 | -mno-smartmips do not generate smartmips instructions\n")); | |
19330 | fprintf (stream, _("\ | |
74cd071d CF |
19331 | -mdsp generate DSP instructions\n\ |
19332 | -mno-dsp do not generate DSP instructions\n")); | |
19333 | fprintf (stream, _("\ | |
8b082fb1 TS |
19334 | -mdspr2 generate DSP R2 instructions\n\ |
19335 | -mno-dspr2 do not generate DSP R2 instructions\n")); | |
19336 | fprintf (stream, _("\ | |
ef2e4d86 CF |
19337 | -mmt generate MT instructions\n\ |
19338 | -mno-mt do not generate MT instructions\n")); | |
19339 | fprintf (stream, _("\ | |
dec0624d MR |
19340 | -mmcu generate MCU instructions\n\ |
19341 | -mno-mcu do not generate MCU instructions\n")); | |
19342 | fprintf (stream, _("\ | |
c67a084a NC |
19343 | -mfix-loongson2f-jump work around Loongson2F JUMP instructions\n\ |
19344 | -mfix-loongson2f-nop work around Loongson2F NOP errata\n\ | |
d766e8ec | 19345 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 19346 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
6a32d874 | 19347 | -mfix-24k insert a nop after ERET and DERET instructions\n\ |
d954098f | 19348 | -mfix-cn63xxp1 work around CN63XXP1 PREF errata\n\ |
316f5878 RS |
19349 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
19350 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 | 19351 | -msym32 assume all symbols have 32-bit values\n\ |
316f5878 RS |
19352 | -O0 remove unneeded NOPs, do not swap branches\n\ |
19353 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
19354 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ |
19355 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
037b32b9 AN |
19356 | fprintf (stream, _("\ |
19357 | -mhard-float allow floating-point instructions\n\ | |
19358 | -msoft-float do not allow floating-point instructions\n\ | |
19359 | -msingle-float only allow 32-bit floating-point operations\n\ | |
19360 | -mdouble-float allow 32-bit and 64-bit floating-point operations\n\ | |
19361 | --[no-]construct-floats [dis]allow floating point values to be constructed\n" | |
19362 | )); | |
316f5878 RS |
19363 | #ifdef OBJ_ELF |
19364 | fprintf (stream, _("\ | |
19365 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
861fb55a | 19366 | -call_nonpic generate non-PIC code that can operate with DSOs\n\ |
0c000745 | 19367 | -mvxworks-pic generate VxWorks position independent code\n\ |
861fb55a | 19368 | -non_shared do not generate code that can operate with DSOs\n\ |
316f5878 | 19369 | -xgot assume a 32 bit GOT\n\ |
dcd410fe | 19370 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 | 19371 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
d821e36b | 19372 | position dependent (non shared) code\n\ |
316f5878 RS |
19373 | -mabi=ABI create ABI conformant object file for:\n")); |
19374 | ||
19375 | first = 1; | |
19376 | ||
19377 | show (stream, "32", &column, &first); | |
19378 | show (stream, "o64", &column, &first); | |
19379 | show (stream, "n32", &column, &first); | |
19380 | show (stream, "64", &column, &first); | |
19381 | show (stream, "eabi", &column, &first); | |
19382 | ||
19383 | fputc ('\n', stream); | |
19384 | ||
19385 | fprintf (stream, _("\ | |
19386 | -32 create o32 ABI object file (default)\n\ | |
19387 | -n32 create n32 ABI object file\n\ | |
19388 | -64 create 64 ABI object file\n")); | |
19389 | #endif | |
e7af610e | 19390 | } |
14e777e0 | 19391 | |
1575952e | 19392 | #ifdef TE_IRIX |
14e777e0 | 19393 | enum dwarf2_format |
413a266c | 19394 | mips_dwarf2_format (asection *sec ATTRIBUTE_UNUSED) |
14e777e0 | 19395 | { |
369943fe | 19396 | if (HAVE_64BIT_SYMBOLS) |
1575952e | 19397 | return dwarf2_format_64bit_irix; |
14e777e0 KB |
19398 | else |
19399 | return dwarf2_format_32bit; | |
19400 | } | |
1575952e | 19401 | #endif |
73369e65 EC |
19402 | |
19403 | int | |
19404 | mips_dwarf2_addr_size (void) | |
19405 | { | |
6b6b3450 | 19406 | if (HAVE_64BIT_OBJECTS) |
73369e65 | 19407 | return 8; |
73369e65 EC |
19408 | else |
19409 | return 4; | |
19410 | } | |
5862107c EC |
19411 | |
19412 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
19413 | void | |
19414 | mips_cfi_frame_initial_instructions (void) | |
19415 | { | |
19416 | cfi_add_CFA_def_cfa_register (SP); | |
19417 | } | |
19418 | ||
707bfff6 TS |
19419 | int |
19420 | tc_mips_regname_to_dw2regnum (char *regname) | |
19421 | { | |
19422 | unsigned int regnum = -1; | |
19423 | unsigned int reg; | |
19424 | ||
19425 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
19426 | regnum = reg; | |
19427 | ||
19428 | return regnum; | |
19429 | } |