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, |
ebd1c875 | 3 | 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by the OSF and Ralph Campbell. |
5 | Written by Keith Knowles and Ralph Campbell, working independently. | |
6 | Modified for ECOFF and R4000 support by Ian Lance Taylor of Cygnus | |
7 | Support. | |
8 | ||
9 | This file is part of GAS. | |
10 | ||
11 | GAS is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
15 | ||
16 | GAS is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
23 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
24 | 02110-1301, USA. */ | |
252b5132 RH |
25 | |
26 | #include "as.h" | |
27 | #include "config.h" | |
28 | #include "subsegs.h" | |
3882b010 | 29 | #include "safe-ctype.h" |
252b5132 | 30 | |
252b5132 RH |
31 | #include "opcode/mips.h" |
32 | #include "itbl-ops.h" | |
c5dd6aab | 33 | #include "dwarf2dbg.h" |
5862107c | 34 | #include "dw2gencfi.h" |
252b5132 RH |
35 | |
36 | #ifdef DEBUG | |
37 | #define DBG(x) printf x | |
38 | #else | |
39 | #define DBG(x) | |
40 | #endif | |
41 | ||
42 | #ifdef OBJ_MAYBE_ELF | |
43 | /* Clean up namespace so we can include obj-elf.h too. */ | |
17a2f251 TS |
44 | static int mips_output_flavor (void); |
45 | static int mips_output_flavor (void) { return OUTPUT_FLAVOR; } | |
252b5132 RH |
46 | #undef OBJ_PROCESS_STAB |
47 | #undef OUTPUT_FLAVOR | |
48 | #undef S_GET_ALIGN | |
49 | #undef S_GET_SIZE | |
50 | #undef S_SET_ALIGN | |
51 | #undef S_SET_SIZE | |
252b5132 RH |
52 | #undef obj_frob_file |
53 | #undef obj_frob_file_after_relocs | |
54 | #undef obj_frob_symbol | |
55 | #undef obj_pop_insert | |
56 | #undef obj_sec_sym_ok_for_reloc | |
57 | #undef OBJ_COPY_SYMBOL_ATTRIBUTES | |
58 | ||
59 | #include "obj-elf.h" | |
60 | /* Fix any of them that we actually care about. */ | |
61 | #undef OUTPUT_FLAVOR | |
62 | #define OUTPUT_FLAVOR mips_output_flavor() | |
63 | #endif | |
64 | ||
65 | #if defined (OBJ_ELF) | |
66 | #include "elf/mips.h" | |
67 | #endif | |
68 | ||
69 | #ifndef ECOFF_DEBUGGING | |
70 | #define NO_ECOFF_DEBUGGING | |
71 | #define ECOFF_DEBUGGING 0 | |
72 | #endif | |
73 | ||
ecb4347a DJ |
74 | int mips_flag_mdebug = -1; |
75 | ||
dcd410fe RO |
76 | /* Control generation of .pdr sections. Off by default on IRIX: the native |
77 | linker doesn't know about and discards them, but relocations against them | |
78 | remain, leading to rld crashes. */ | |
79 | #ifdef TE_IRIX | |
80 | int mips_flag_pdr = FALSE; | |
81 | #else | |
82 | int mips_flag_pdr = TRUE; | |
83 | #endif | |
84 | ||
252b5132 RH |
85 | #include "ecoff.h" |
86 | ||
87 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
88 | static char *mips_regmask_frag; | |
89 | #endif | |
90 | ||
85b51719 | 91 | #define ZERO 0 |
252b5132 RH |
92 | #define AT 1 |
93 | #define TREG 24 | |
94 | #define PIC_CALL_REG 25 | |
95 | #define KT0 26 | |
96 | #define KT1 27 | |
97 | #define GP 28 | |
98 | #define SP 29 | |
99 | #define FP 30 | |
100 | #define RA 31 | |
101 | ||
102 | #define ILLEGAL_REG (32) | |
103 | ||
104 | /* Allow override of standard little-endian ECOFF format. */ | |
105 | ||
106 | #ifndef ECOFF_LITTLE_FORMAT | |
107 | #define ECOFF_LITTLE_FORMAT "ecoff-littlemips" | |
108 | #endif | |
109 | ||
110 | extern int target_big_endian; | |
111 | ||
252b5132 | 112 | /* The name of the readonly data section. */ |
4d0d148d | 113 | #define RDATA_SECTION_NAME (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ |
252b5132 | 114 | ? ".rdata" \ |
056350c6 NC |
115 | : OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
116 | ? ".rdata" \ | |
252b5132 RH |
117 | : OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
118 | ? ".rodata" \ | |
119 | : (abort (), "")) | |
120 | ||
47e39b9d RS |
121 | /* Information about an instruction, including its format, operands |
122 | and fixups. */ | |
123 | struct mips_cl_insn | |
124 | { | |
125 | /* The opcode's entry in mips_opcodes or mips16_opcodes. */ | |
126 | const struct mips_opcode *insn_mo; | |
127 | ||
128 | /* True if this is a mips16 instruction and if we want the extended | |
129 | form of INSN_MO. */ | |
130 | bfd_boolean use_extend; | |
131 | ||
132 | /* The 16-bit extension instruction to use when USE_EXTEND is true. */ | |
133 | unsigned short extend; | |
134 | ||
135 | /* The 16-bit or 32-bit bitstring of the instruction itself. This is | |
136 | a copy of INSN_MO->match with the operands filled in. */ | |
137 | unsigned long insn_opcode; | |
138 | ||
139 | /* The frag that contains the instruction. */ | |
140 | struct frag *frag; | |
141 | ||
142 | /* The offset into FRAG of the first instruction byte. */ | |
143 | long where; | |
144 | ||
145 | /* The relocs associated with the instruction, if any. */ | |
146 | fixS *fixp[3]; | |
147 | ||
a38419a5 RS |
148 | /* True if this entry cannot be moved from its current position. */ |
149 | unsigned int fixed_p : 1; | |
47e39b9d | 150 | |
708587a4 | 151 | /* True if this instruction occurred in a .set noreorder block. */ |
47e39b9d RS |
152 | unsigned int noreorder_p : 1; |
153 | ||
2fa15973 RS |
154 | /* True for mips16 instructions that jump to an absolute address. */ |
155 | unsigned int mips16_absolute_jump_p : 1; | |
47e39b9d RS |
156 | }; |
157 | ||
a325df1d TS |
158 | /* The ABI to use. */ |
159 | enum mips_abi_level | |
160 | { | |
161 | NO_ABI = 0, | |
162 | O32_ABI, | |
163 | O64_ABI, | |
164 | N32_ABI, | |
165 | N64_ABI, | |
166 | EABI_ABI | |
167 | }; | |
168 | ||
169 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 170 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 171 | |
143d77c5 EC |
172 | /* Whether or not we have code that can call pic code. */ |
173 | int mips_abicalls = FALSE; | |
174 | ||
aa6975fb ILT |
175 | /* Whether or not we have code which can be put into a shared |
176 | library. */ | |
177 | static bfd_boolean mips_in_shared = TRUE; | |
178 | ||
252b5132 RH |
179 | /* This is the set of options which may be modified by the .set |
180 | pseudo-op. We use a struct so that .set push and .set pop are more | |
181 | reliable. */ | |
182 | ||
e972090a NC |
183 | struct mips_set_options |
184 | { | |
252b5132 RH |
185 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
186 | if it has not been initialized. Changed by `.set mipsN', and the | |
187 | -mipsN command line option, and the default CPU. */ | |
188 | int isa; | |
1f25f5d3 CD |
189 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
190 | if they have not been initialized. Changed by `.set <asename>', by | |
191 | command line options, and based on the default architecture. */ | |
192 | int ase_mips3d; | |
deec1734 | 193 | int ase_mdmx; |
e16bfa71 | 194 | int ase_smartmips; |
74cd071d | 195 | int ase_dsp; |
ef2e4d86 | 196 | int ase_mt; |
252b5132 RH |
197 | /* Whether we are assembling for the mips16 processor. 0 if we are |
198 | not, 1 if we are, and -1 if the value has not been initialized. | |
199 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
200 | -nomips16 command line options, and the default CPU. */ | |
201 | int mips16; | |
202 | /* Non-zero if we should not reorder instructions. Changed by `.set | |
203 | reorder' and `.set noreorder'. */ | |
204 | int noreorder; | |
205 | /* Non-zero if we should not permit the $at ($1) register to be used | |
206 | in instructions. Changed by `.set at' and `.set noat'. */ | |
207 | int noat; | |
208 | /* Non-zero if we should warn when a macro instruction expands into | |
209 | more than one machine instruction. Changed by `.set nomacro' and | |
210 | `.set macro'. */ | |
211 | int warn_about_macros; | |
212 | /* Non-zero if we should not move instructions. Changed by `.set | |
213 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
214 | int nomove; | |
215 | /* Non-zero if we should not optimize branches by moving the target | |
216 | of the branch into the delay slot. Actually, we don't perform | |
217 | this optimization anyhow. Changed by `.set bopt' and `.set | |
218 | nobopt'. */ | |
219 | int nobopt; | |
220 | /* Non-zero if we should not autoextend mips16 instructions. | |
221 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
222 | int noautoextend; | |
a325df1d TS |
223 | /* Restrict general purpose registers and floating point registers |
224 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
225 | is passed but can changed if the assembler code uses .set mipsN. */ | |
226 | int gp32; | |
227 | int fp32; | |
fef14a42 TS |
228 | /* MIPS architecture (CPU) type. Changed by .set arch=FOO, the -march |
229 | command line option, and the default CPU. */ | |
230 | int arch; | |
aed1a261 RS |
231 | /* True if ".set sym32" is in effect. */ |
232 | bfd_boolean sym32; | |
252b5132 RH |
233 | }; |
234 | ||
a325df1d | 235 | /* True if -mgp32 was passed. */ |
a8e8e863 | 236 | static int file_mips_gp32 = -1; |
a325df1d TS |
237 | |
238 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 239 | static int file_mips_fp32 = -1; |
a325df1d | 240 | |
252b5132 | 241 | /* This is the struct we use to hold the current set of options. Note |
a4672219 | 242 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to |
e7af610e | 243 | -1 to indicate that they have not been initialized. */ |
252b5132 | 244 | |
e972090a NC |
245 | static struct mips_set_options mips_opts = |
246 | { | |
e16bfa71 | 247 | ISA_UNKNOWN, -1, -1, 0, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, CPU_UNKNOWN, FALSE |
e7af610e | 248 | }; |
252b5132 RH |
249 | |
250 | /* These variables are filled in with the masks of registers used. | |
251 | The object format code reads them and puts them in the appropriate | |
252 | place. */ | |
253 | unsigned long mips_gprmask; | |
254 | unsigned long mips_cprmask[4]; | |
255 | ||
256 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 257 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 258 | |
a4672219 TS |
259 | /* True if -mips16 was passed or implied by arguments passed on the |
260 | command line (e.g., by -march). */ | |
261 | static int file_ase_mips16; | |
262 | ||
3994f87e TS |
263 | #define ISA_SUPPORTS_MIPS16E (mips_opts.isa == ISA_MIPS32 \ |
264 | || mips_opts.isa == ISA_MIPS32R2 \ | |
265 | || mips_opts.isa == ISA_MIPS64 \ | |
266 | || mips_opts.isa == ISA_MIPS64R2) | |
267 | ||
1f25f5d3 CD |
268 | /* True if -mips3d was passed or implied by arguments passed on the |
269 | command line (e.g., by -march). */ | |
270 | static int file_ase_mips3d; | |
271 | ||
deec1734 CD |
272 | /* True if -mdmx was passed or implied by arguments passed on the |
273 | command line (e.g., by -march). */ | |
274 | static int file_ase_mdmx; | |
275 | ||
e16bfa71 TS |
276 | /* True if -msmartmips was passed or implied by arguments passed on the |
277 | command line (e.g., by -march). */ | |
278 | static int file_ase_smartmips; | |
279 | ||
ad3fea08 TS |
280 | #define ISA_SUPPORTS_SMARTMIPS (mips_opts.isa == ISA_MIPS32 \ |
281 | || mips_opts.isa == ISA_MIPS32R2) | |
e16bfa71 | 282 | |
74cd071d CF |
283 | /* True if -mdsp was passed or implied by arguments passed on the |
284 | command line (e.g., by -march). */ | |
285 | static int file_ase_dsp; | |
286 | ||
ad3fea08 TS |
287 | #define ISA_SUPPORTS_DSP_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
288 | || mips_opts.isa == ISA_MIPS64R2) | |
289 | ||
65263ce3 TS |
290 | #define ISA_SUPPORTS_DSP64_ASE (mips_opts.isa == ISA_MIPS64R2) |
291 | ||
ef2e4d86 CF |
292 | /* True if -mmt was passed or implied by arguments passed on the |
293 | command line (e.g., by -march). */ | |
294 | static int file_ase_mt; | |
295 | ||
ad3fea08 TS |
296 | #define ISA_SUPPORTS_MT_ASE (mips_opts.isa == ISA_MIPS32R2 \ |
297 | || mips_opts.isa == ISA_MIPS64R2) | |
298 | ||
ec68c924 | 299 | /* The argument of the -march= flag. The architecture we are assembling. */ |
fef14a42 | 300 | static int file_mips_arch = CPU_UNKNOWN; |
316f5878 | 301 | static const char *mips_arch_string; |
ec68c924 EC |
302 | |
303 | /* The argument of the -mtune= flag. The architecture for which we | |
304 | are optimizing. */ | |
305 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 | 306 | static const char *mips_tune_string; |
ec68c924 | 307 | |
316f5878 | 308 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
309 | static int mips_32bitmode = 0; |
310 | ||
316f5878 RS |
311 | /* True if the given ABI requires 32-bit registers. */ |
312 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
313 | ||
314 | /* Likewise 64-bit registers. */ | |
707bfff6 TS |
315 | #define ABI_NEEDS_64BIT_REGS(ABI) \ |
316 | ((ABI) == N32_ABI \ | |
317 | || (ABI) == N64_ABI \ | |
316f5878 RS |
318 | || (ABI) == O64_ABI) |
319 | ||
ad3fea08 | 320 | /* Return true if ISA supports 64 bit wide gp registers. */ |
707bfff6 TS |
321 | #define ISA_HAS_64BIT_REGS(ISA) \ |
322 | ((ISA) == ISA_MIPS3 \ | |
323 | || (ISA) == ISA_MIPS4 \ | |
324 | || (ISA) == ISA_MIPS5 \ | |
325 | || (ISA) == ISA_MIPS64 \ | |
326 | || (ISA) == ISA_MIPS64R2) | |
9ce8a5dd | 327 | |
ad3fea08 TS |
328 | /* Return true if ISA supports 64 bit wide float registers. */ |
329 | #define ISA_HAS_64BIT_FPRS(ISA) \ | |
330 | ((ISA) == ISA_MIPS3 \ | |
331 | || (ISA) == ISA_MIPS4 \ | |
332 | || (ISA) == ISA_MIPS5 \ | |
333 | || (ISA) == ISA_MIPS32R2 \ | |
334 | || (ISA) == ISA_MIPS64 \ | |
335 | || (ISA) == ISA_MIPS64R2) | |
336 | ||
af7ee8bf CD |
337 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
338 | instructions. */ | |
707bfff6 TS |
339 | #define ISA_HAS_DROR(ISA) \ |
340 | ((ISA) == ISA_MIPS64R2) | |
af7ee8bf CD |
341 | |
342 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
343 | instructions. */ | |
707bfff6 TS |
344 | #define ISA_HAS_ROR(ISA) \ |
345 | ((ISA) == ISA_MIPS32R2 \ | |
346 | || (ISA) == ISA_MIPS64R2 \ | |
347 | || mips_opts.ase_smartmips) | |
348 | ||
7455baf8 TS |
349 | /* Return true if ISA supports single-precision floats in odd registers. */ |
350 | #define ISA_HAS_ODD_SINGLE_FPR(ISA) \ | |
351 | ((ISA) == ISA_MIPS32 \ | |
352 | || (ISA) == ISA_MIPS32R2 \ | |
353 | || (ISA) == ISA_MIPS64 \ | |
354 | || (ISA) == ISA_MIPS64R2) | |
af7ee8bf | 355 | |
ad3fea08 TS |
356 | /* Return true if ISA supports move to/from high part of a 64-bit |
357 | floating-point register. */ | |
358 | #define ISA_HAS_MXHC1(ISA) \ | |
359 | ((ISA) == ISA_MIPS32R2 \ | |
360 | || (ISA) == ISA_MIPS64R2) | |
361 | ||
e013f690 | 362 | #define HAVE_32BIT_GPRS \ |
ad3fea08 | 363 | (mips_opts.gp32 || !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 364 | |
e013f690 | 365 | #define HAVE_32BIT_FPRS \ |
ad3fea08 | 366 | (mips_opts.fp32 || !ISA_HAS_64BIT_FPRS (mips_opts.isa)) |
ca4e0257 | 367 | |
ad3fea08 TS |
368 | #define HAVE_64BIT_GPRS (!HAVE_32BIT_GPRS) |
369 | #define HAVE_64BIT_FPRS (!HAVE_32BIT_FPRS) | |
ca4e0257 | 370 | |
316f5878 | 371 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 372 | |
316f5878 | 373 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 | 374 | |
3b91255e RS |
375 | /* True if relocations are stored in-place. */ |
376 | #define HAVE_IN_PLACE_ADDENDS (!HAVE_NEWABI) | |
377 | ||
aed1a261 RS |
378 | /* The ABI-derived address size. */ |
379 | #define HAVE_64BIT_ADDRESSES \ | |
380 | (HAVE_64BIT_GPRS && (mips_abi == EABI_ABI || mips_abi == N64_ABI)) | |
381 | #define HAVE_32BIT_ADDRESSES (!HAVE_64BIT_ADDRESSES) | |
e013f690 | 382 | |
aed1a261 RS |
383 | /* The size of symbolic constants (i.e., expressions of the form |
384 | "SYMBOL" or "SYMBOL + OFFSET"). */ | |
385 | #define HAVE_32BIT_SYMBOLS \ | |
386 | (HAVE_32BIT_ADDRESSES || !HAVE_64BIT_OBJECTS || mips_opts.sym32) | |
387 | #define HAVE_64BIT_SYMBOLS (!HAVE_32BIT_SYMBOLS) | |
ca4e0257 | 388 | |
b7c7d6c1 TS |
389 | /* Addresses are loaded in different ways, depending on the address size |
390 | in use. The n32 ABI Documentation also mandates the use of additions | |
391 | with overflow checking, but existing implementations don't follow it. */ | |
f899b4b8 | 392 | #define ADDRESS_ADD_INSN \ |
b7c7d6c1 | 393 | (HAVE_32BIT_ADDRESSES ? "addu" : "daddu") |
f899b4b8 TS |
394 | |
395 | #define ADDRESS_ADDI_INSN \ | |
b7c7d6c1 | 396 | (HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu") |
f899b4b8 TS |
397 | |
398 | #define ADDRESS_LOAD_INSN \ | |
399 | (HAVE_32BIT_ADDRESSES ? "lw" : "ld") | |
400 | ||
401 | #define ADDRESS_STORE_INSN \ | |
402 | (HAVE_32BIT_ADDRESSES ? "sw" : "sd") | |
403 | ||
a4672219 | 404 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
405 | #define CPU_HAS_MIPS16(cpu) \ |
406 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
407 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 408 | |
60b63b72 RS |
409 | /* True if CPU has a dror instruction. */ |
410 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
411 | ||
412 | /* True if CPU has a ror instruction. */ | |
413 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
414 | ||
c8978940 CD |
415 | /* True if mflo and mfhi can be immediately followed by instructions |
416 | which write to the HI and LO registers. | |
417 | ||
418 | According to MIPS specifications, MIPS ISAs I, II, and III need | |
419 | (at least) two instructions between the reads of HI/LO and | |
420 | instructions which write them, and later ISAs do not. Contradicting | |
421 | the MIPS specifications, some MIPS IV processor user manuals (e.g. | |
422 | the UM for the NEC Vr5000) document needing the instructions between | |
423 | HI/LO reads and writes, as well. Therefore, we declare only MIPS32, | |
424 | MIPS64 and later ISAs to have the interlocks, plus any specific | |
425 | earlier-ISA CPUs for which CPU documentation declares that the | |
426 | instructions are really interlocked. */ | |
427 | #define hilo_interlocks \ | |
428 | (mips_opts.isa == ISA_MIPS32 \ | |
429 | || mips_opts.isa == ISA_MIPS32R2 \ | |
430 | || mips_opts.isa == ISA_MIPS64 \ | |
431 | || mips_opts.isa == ISA_MIPS64R2 \ | |
432 | || mips_opts.arch == CPU_R4010 \ | |
433 | || mips_opts.arch == CPU_R10000 \ | |
434 | || mips_opts.arch == CPU_R12000 \ | |
435 | || mips_opts.arch == CPU_RM7000 \ | |
c8978940 CD |
436 | || mips_opts.arch == CPU_VR5500 \ |
437 | ) | |
252b5132 RH |
438 | |
439 | /* Whether the processor uses hardware interlocks to protect reads | |
81912461 ILT |
440 | from the GPRs after they are loaded from memory, and thus does not |
441 | require nops to be inserted. This applies to instructions marked | |
442 | INSN_LOAD_MEMORY_DELAY. These nops are only required at MIPS ISA | |
443 | level I. */ | |
252b5132 | 444 | #define gpr_interlocks \ |
e7af610e | 445 | (mips_opts.isa != ISA_MIPS1 \ |
fef14a42 | 446 | || mips_opts.arch == CPU_R3900) |
252b5132 | 447 | |
81912461 ILT |
448 | /* Whether the processor uses hardware interlocks to avoid delays |
449 | required by coprocessor instructions, and thus does not require | |
450 | nops to be inserted. This applies to instructions marked | |
451 | INSN_LOAD_COPROC_DELAY, INSN_COPROC_MOVE_DELAY, and to delays | |
452 | between instructions marked INSN_WRITE_COND_CODE and ones marked | |
453 | INSN_READ_COND_CODE. These nops are only required at MIPS ISA | |
454 | levels I, II, and III. */ | |
bdaaa2e1 | 455 | /* Itbl support may require additional care here. */ |
81912461 ILT |
456 | #define cop_interlocks \ |
457 | ((mips_opts.isa != ISA_MIPS1 \ | |
458 | && mips_opts.isa != ISA_MIPS2 \ | |
459 | && mips_opts.isa != ISA_MIPS3) \ | |
460 | || mips_opts.arch == CPU_R4300 \ | |
81912461 ILT |
461 | ) |
462 | ||
463 | /* Whether the processor uses hardware interlocks to protect reads | |
464 | from coprocessor registers after they are loaded from memory, and | |
465 | thus does not require nops to be inserted. This applies to | |
466 | instructions marked INSN_COPROC_MEMORY_DELAY. These nops are only | |
467 | requires at MIPS ISA level I. */ | |
468 | #define cop_mem_interlocks (mips_opts.isa != ISA_MIPS1) | |
252b5132 | 469 | |
6b76fefe CM |
470 | /* Is this a mfhi or mflo instruction? */ |
471 | #define MF_HILO_INSN(PINFO) \ | |
472 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) | |
473 | ||
252b5132 RH |
474 | /* MIPS PIC level. */ |
475 | ||
a161fe53 | 476 | enum mips_pic_level mips_pic; |
252b5132 | 477 | |
c9914766 | 478 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 479 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 480 | static int mips_big_got = 0; |
252b5132 RH |
481 | |
482 | /* 1 if trap instructions should used for overflow rather than break | |
483 | instructions. */ | |
c9914766 | 484 | static int mips_trap = 0; |
252b5132 | 485 | |
119d663a | 486 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 487 | by assembling two single width halves into two single width floating |
119d663a NC |
488 | point registers which just happen to alias the double width destination |
489 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 490 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
491 | automatically at assemble time. */ |
492 | static int mips_disable_float_construction; | |
493 | ||
252b5132 RH |
494 | /* Non-zero if any .set noreorder directives were used. */ |
495 | ||
496 | static int mips_any_noreorder; | |
497 | ||
6b76fefe CM |
498 | /* Non-zero if nops should be inserted when the register referenced in |
499 | an mfhi/mflo instruction is read in the next two instructions. */ | |
500 | static int mips_7000_hilo_fix; | |
501 | ||
252b5132 | 502 | /* The size of the small data section. */ |
156c2f8b | 503 | static unsigned int g_switch_value = 8; |
252b5132 RH |
504 | /* Whether the -G option was used. */ |
505 | static int g_switch_seen = 0; | |
506 | ||
507 | #define N_RMASK 0xc4 | |
508 | #define N_VFP 0xd4 | |
509 | ||
510 | /* If we can determine in advance that GP optimization won't be | |
511 | possible, we can skip the relaxation stuff that tries to produce | |
512 | GP-relative references. This makes delay slot optimization work | |
513 | better. | |
514 | ||
515 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
516 | gcc output. It needs to guess right for gcc, otherwise gcc |
517 | will put what it thinks is a GP-relative instruction in a branch | |
518 | delay slot. | |
252b5132 RH |
519 | |
520 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
521 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
17a2f251 | 522 | static int nopic_need_relax (symbolS *, int); |
252b5132 RH |
523 | |
524 | /* handle of the OPCODE hash table */ | |
525 | static struct hash_control *op_hash = NULL; | |
526 | ||
527 | /* The opcode hash table we use for the mips16. */ | |
528 | static struct hash_control *mips16_op_hash = NULL; | |
529 | ||
530 | /* This array holds the chars that always start a comment. If the | |
531 | pre-processor is disabled, these aren't very useful */ | |
532 | const char comment_chars[] = "#"; | |
533 | ||
534 | /* This array holds the chars that only start a comment at the beginning of | |
535 | a line. If the line seems to have the form '# 123 filename' | |
536 | .line and .file directives will appear in the pre-processed output */ | |
537 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
538 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 539 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
540 | /* Also note that C style comments are always supported. */ |
541 | const char line_comment_chars[] = "#"; | |
542 | ||
bdaaa2e1 | 543 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 544 | const char line_separator_chars[] = ";"; |
252b5132 RH |
545 | |
546 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
547 | const char EXP_CHARS[] = "eE"; | |
548 | ||
549 | /* Chars that mean this number is a floating point constant */ | |
550 | /* As in 0f12.456 */ | |
551 | /* or 0d1.2345e12 */ | |
552 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
553 | ||
554 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
555 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
556 | but nothing is ideal around here. | |
557 | */ | |
558 | ||
559 | static char *insn_error; | |
560 | ||
561 | static int auto_align = 1; | |
562 | ||
563 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
564 | offset in the stack frame from which to restore the $gp register. | |
565 | This is set by the .cprestore pseudo-op, and saved in this | |
566 | variable. */ | |
567 | static offsetT mips_cprestore_offset = -1; | |
568 | ||
67c1ffbe | 569 | /* Similar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
6478892d | 570 | more optimizations, it can use a register value instead of a memory-saved |
956cd1d6 | 571 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
572 | static offsetT mips_cpreturn_offset = -1; |
573 | static int mips_cpreturn_register = -1; | |
574 | static int mips_gp_register = GP; | |
def2e0dd | 575 | static int mips_gprel_offset = 0; |
6478892d | 576 | |
7a621144 DJ |
577 | /* Whether mips_cprestore_offset has been set in the current function |
578 | (or whether it has already been warned about, if not). */ | |
579 | static int mips_cprestore_valid = 0; | |
580 | ||
252b5132 RH |
581 | /* This is the register which holds the stack frame, as set by the |
582 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
583 | static int mips_frame_reg = SP; | |
584 | ||
7a621144 DJ |
585 | /* Whether mips_frame_reg has been set in the current function |
586 | (or whether it has already been warned about, if not). */ | |
587 | static int mips_frame_reg_valid = 0; | |
588 | ||
252b5132 RH |
589 | /* To output NOP instructions correctly, we need to keep information |
590 | about the previous two instructions. */ | |
591 | ||
592 | /* Whether we are optimizing. The default value of 2 means to remove | |
593 | unneeded NOPs and swap branch instructions when possible. A value | |
594 | of 1 means to not swap branches. A value of 0 means to always | |
595 | insert NOPs. */ | |
596 | static int mips_optimize = 2; | |
597 | ||
598 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
599 | equivalent to seeing no -g option at all. */ | |
600 | static int mips_debug = 0; | |
601 | ||
7d8e00cf RS |
602 | /* The maximum number of NOPs needed to avoid the VR4130 mflo/mfhi errata. */ |
603 | #define MAX_VR4130_NOPS 4 | |
604 | ||
605 | /* The maximum number of NOPs needed to fill delay slots. */ | |
606 | #define MAX_DELAY_NOPS 2 | |
607 | ||
608 | /* The maximum number of NOPs needed for any purpose. */ | |
609 | #define MAX_NOPS 4 | |
71400594 RS |
610 | |
611 | /* A list of previous instructions, with index 0 being the most recent. | |
612 | We need to look back MAX_NOPS instructions when filling delay slots | |
613 | or working around processor errata. We need to look back one | |
614 | instruction further if we're thinking about using history[0] to | |
615 | fill a branch delay slot. */ | |
616 | static struct mips_cl_insn history[1 + MAX_NOPS]; | |
252b5132 | 617 | |
1e915849 RS |
618 | /* Nop instructions used by emit_nop. */ |
619 | static struct mips_cl_insn nop_insn, mips16_nop_insn; | |
620 | ||
621 | /* The appropriate nop for the current mode. */ | |
622 | #define NOP_INSN (mips_opts.mips16 ? &mips16_nop_insn : &nop_insn) | |
252b5132 | 623 | |
252b5132 RH |
624 | /* If this is set, it points to a frag holding nop instructions which |
625 | were inserted before the start of a noreorder section. If those | |
626 | nops turn out to be unnecessary, the size of the frag can be | |
627 | decreased. */ | |
628 | static fragS *prev_nop_frag; | |
629 | ||
630 | /* The number of nop instructions we created in prev_nop_frag. */ | |
631 | static int prev_nop_frag_holds; | |
632 | ||
633 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 634 | prev_nop_frag. */ |
252b5132 RH |
635 | static int prev_nop_frag_required; |
636 | ||
637 | /* The number of instructions we've seen since prev_nop_frag. */ | |
638 | static int prev_nop_frag_since; | |
639 | ||
640 | /* For ECOFF and ELF, relocations against symbols are done in two | |
641 | parts, with a HI relocation and a LO relocation. Each relocation | |
642 | has only 16 bits of space to store an addend. This means that in | |
643 | order for the linker to handle carries correctly, it must be able | |
644 | to locate both the HI and the LO relocation. This means that the | |
645 | relocations must appear in order in the relocation table. | |
646 | ||
647 | In order to implement this, we keep track of each unmatched HI | |
648 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 649 | corresponding LO relocation. */ |
252b5132 | 650 | |
e972090a NC |
651 | struct mips_hi_fixup |
652 | { | |
252b5132 RH |
653 | /* Next HI fixup. */ |
654 | struct mips_hi_fixup *next; | |
655 | /* This fixup. */ | |
656 | fixS *fixp; | |
657 | /* The section this fixup is in. */ | |
658 | segT seg; | |
659 | }; | |
660 | ||
661 | /* The list of unmatched HI relocs. */ | |
662 | ||
663 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
664 | ||
64bdfcaf RS |
665 | /* The frag containing the last explicit relocation operator. |
666 | Null if explicit relocations have not been used. */ | |
667 | ||
668 | static fragS *prev_reloc_op_frag; | |
669 | ||
252b5132 RH |
670 | /* Map normal MIPS register numbers to mips16 register numbers. */ |
671 | ||
672 | #define X ILLEGAL_REG | |
e972090a NC |
673 | static const int mips32_to_16_reg_map[] = |
674 | { | |
252b5132 RH |
675 | X, X, 2, 3, 4, 5, 6, 7, |
676 | X, X, X, X, X, X, X, X, | |
677 | 0, 1, X, X, X, X, X, X, | |
678 | X, X, X, X, X, X, X, X | |
679 | }; | |
680 | #undef X | |
681 | ||
682 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
683 | ||
e972090a NC |
684 | static const unsigned int mips16_to_32_reg_map[] = |
685 | { | |
252b5132 RH |
686 | 16, 17, 2, 3, 4, 5, 6, 7 |
687 | }; | |
60b63b72 | 688 | |
71400594 RS |
689 | /* Classifies the kind of instructions we're interested in when |
690 | implementing -mfix-vr4120. */ | |
691 | enum fix_vr4120_class { | |
692 | FIX_VR4120_MACC, | |
693 | FIX_VR4120_DMACC, | |
694 | FIX_VR4120_MULT, | |
695 | FIX_VR4120_DMULT, | |
696 | FIX_VR4120_DIV, | |
697 | FIX_VR4120_MTHILO, | |
698 | NUM_FIX_VR4120_CLASSES | |
699 | }; | |
700 | ||
701 | /* Given two FIX_VR4120_* values X and Y, bit Y of element X is set if | |
702 | there must be at least one other instruction between an instruction | |
703 | of type X and an instruction of type Y. */ | |
704 | static unsigned int vr4120_conflicts[NUM_FIX_VR4120_CLASSES]; | |
705 | ||
706 | /* True if -mfix-vr4120 is in force. */ | |
d766e8ec | 707 | static int mips_fix_vr4120; |
4a6a3df4 | 708 | |
7d8e00cf RS |
709 | /* ...likewise -mfix-vr4130. */ |
710 | static int mips_fix_vr4130; | |
711 | ||
4a6a3df4 AO |
712 | /* We don't relax branches by default, since this causes us to expand |
713 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
714 | fail to compute the offset before expanding the macro to the most | |
715 | efficient expansion. */ | |
716 | ||
717 | static int mips_relax_branch; | |
252b5132 | 718 | \f |
4d7206a2 RS |
719 | /* The expansion of many macros depends on the type of symbol that |
720 | they refer to. For example, when generating position-dependent code, | |
721 | a macro that refers to a symbol may have two different expansions, | |
722 | one which uses GP-relative addresses and one which uses absolute | |
723 | addresses. When generating SVR4-style PIC, a macro may have | |
724 | different expansions for local and global symbols. | |
725 | ||
726 | We handle these situations by generating both sequences and putting | |
727 | them in variant frags. In position-dependent code, the first sequence | |
728 | will be the GP-relative one and the second sequence will be the | |
729 | absolute one. In SVR4 PIC, the first sequence will be for global | |
730 | symbols and the second will be for local symbols. | |
731 | ||
584892a6 RS |
732 | The frag's "subtype" is RELAX_ENCODE (FIRST, SECOND), where FIRST and |
733 | SECOND are the lengths of the two sequences in bytes. These fields | |
734 | can be extracted using RELAX_FIRST() and RELAX_SECOND(). In addition, | |
735 | the subtype has the following flags: | |
4d7206a2 | 736 | |
584892a6 RS |
737 | RELAX_USE_SECOND |
738 | Set if it has been decided that we should use the second | |
739 | sequence instead of the first. | |
740 | ||
741 | RELAX_SECOND_LONGER | |
742 | Set in the first variant frag if the macro's second implementation | |
743 | is longer than its first. This refers to the macro as a whole, | |
744 | not an individual relaxation. | |
745 | ||
746 | RELAX_NOMACRO | |
747 | Set in the first variant frag if the macro appeared in a .set nomacro | |
748 | block and if one alternative requires a warning but the other does not. | |
749 | ||
750 | RELAX_DELAY_SLOT | |
751 | Like RELAX_NOMACRO, but indicates that the macro appears in a branch | |
752 | delay slot. | |
4d7206a2 RS |
753 | |
754 | The frag's "opcode" points to the first fixup for relaxable code. | |
755 | ||
756 | Relaxable macros are generated using a sequence such as: | |
757 | ||
758 | relax_start (SYMBOL); | |
759 | ... generate first expansion ... | |
760 | relax_switch (); | |
761 | ... generate second expansion ... | |
762 | relax_end (); | |
763 | ||
764 | The code and fixups for the unwanted alternative are discarded | |
765 | by md_convert_frag. */ | |
584892a6 | 766 | #define RELAX_ENCODE(FIRST, SECOND) (((FIRST) << 8) | (SECOND)) |
4d7206a2 | 767 | |
584892a6 RS |
768 | #define RELAX_FIRST(X) (((X) >> 8) & 0xff) |
769 | #define RELAX_SECOND(X) ((X) & 0xff) | |
770 | #define RELAX_USE_SECOND 0x10000 | |
771 | #define RELAX_SECOND_LONGER 0x20000 | |
772 | #define RELAX_NOMACRO 0x40000 | |
773 | #define RELAX_DELAY_SLOT 0x80000 | |
252b5132 | 774 | |
4a6a3df4 AO |
775 | /* Branch without likely bit. If label is out of range, we turn: |
776 | ||
777 | beq reg1, reg2, label | |
778 | delay slot | |
779 | ||
780 | into | |
781 | ||
782 | bne reg1, reg2, 0f | |
783 | nop | |
784 | j label | |
785 | 0: delay slot | |
786 | ||
787 | with the following opcode replacements: | |
788 | ||
789 | beq <-> bne | |
790 | blez <-> bgtz | |
791 | bltz <-> bgez | |
792 | bc1f <-> bc1t | |
793 | ||
794 | bltzal <-> bgezal (with jal label instead of j label) | |
795 | ||
796 | Even though keeping the delay slot instruction in the delay slot of | |
797 | the branch would be more efficient, it would be very tricky to do | |
798 | correctly, because we'd have to introduce a variable frag *after* | |
799 | the delay slot instruction, and expand that instead. Let's do it | |
800 | the easy way for now, even if the branch-not-taken case now costs | |
801 | one additional instruction. Out-of-range branches are not supposed | |
802 | to be common, anyway. | |
803 | ||
804 | Branch likely. If label is out of range, we turn: | |
805 | ||
806 | beql reg1, reg2, label | |
807 | delay slot (annulled if branch not taken) | |
808 | ||
809 | into | |
810 | ||
811 | beql reg1, reg2, 1f | |
812 | nop | |
813 | beql $0, $0, 2f | |
814 | nop | |
815 | 1: j[al] label | |
816 | delay slot (executed only if branch taken) | |
817 | 2: | |
818 | ||
819 | It would be possible to generate a shorter sequence by losing the | |
820 | likely bit, generating something like: | |
b34976b6 | 821 | |
4a6a3df4 AO |
822 | bne reg1, reg2, 0f |
823 | nop | |
824 | j[al] label | |
825 | delay slot (executed only if branch taken) | |
826 | 0: | |
827 | ||
828 | beql -> bne | |
829 | bnel -> beq | |
830 | blezl -> bgtz | |
831 | bgtzl -> blez | |
832 | bltzl -> bgez | |
833 | bgezl -> bltz | |
834 | bc1fl -> bc1t | |
835 | bc1tl -> bc1f | |
836 | ||
837 | bltzall -> bgezal (with jal label instead of j label) | |
838 | bgezall -> bltzal (ditto) | |
839 | ||
840 | ||
841 | but it's not clear that it would actually improve performance. */ | |
af6ae2ad | 842 | #define RELAX_BRANCH_ENCODE(uncond, likely, link, toofar) \ |
4a6a3df4 AO |
843 | ((relax_substateT) \ |
844 | (0xc0000000 \ | |
845 | | ((toofar) ? 1 : 0) \ | |
846 | | ((link) ? 2 : 0) \ | |
847 | | ((likely) ? 4 : 0) \ | |
af6ae2ad | 848 | | ((uncond) ? 8 : 0))) |
4a6a3df4 | 849 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
4a6a3df4 AO |
850 | #define RELAX_BRANCH_UNCOND(i) (((i) & 8) != 0) |
851 | #define RELAX_BRANCH_LIKELY(i) (((i) & 4) != 0) | |
852 | #define RELAX_BRANCH_LINK(i) (((i) & 2) != 0) | |
ae6063d4 | 853 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 1) != 0) |
4a6a3df4 | 854 | |
252b5132 RH |
855 | /* For mips16 code, we use an entirely different form of relaxation. |
856 | mips16 supports two versions of most instructions which take | |
857 | immediate values: a small one which takes some small value, and a | |
858 | larger one which takes a 16 bit value. Since branches also follow | |
859 | this pattern, relaxing these values is required. | |
860 | ||
861 | We can assemble both mips16 and normal MIPS code in a single | |
862 | object. Therefore, we need to support this type of relaxation at | |
863 | the same time that we support the relaxation described above. We | |
864 | use the high bit of the subtype field to distinguish these cases. | |
865 | ||
866 | The information we store for this type of relaxation is the | |
867 | argument code found in the opcode file for this relocation, whether | |
868 | the user explicitly requested a small or extended form, and whether | |
869 | the relocation is in a jump or jal delay slot. That tells us the | |
870 | size of the value, and how it should be stored. We also store | |
871 | whether the fragment is considered to be extended or not. We also | |
872 | store whether this is known to be a branch to a different section, | |
873 | whether we have tried to relax this frag yet, and whether we have | |
874 | ever extended a PC relative fragment because of a shift count. */ | |
875 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
876 | (0x80000000 \ | |
877 | | ((type) & 0xff) \ | |
878 | | ((small) ? 0x100 : 0) \ | |
879 | | ((ext) ? 0x200 : 0) \ | |
880 | | ((dslot) ? 0x400 : 0) \ | |
881 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 882 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
883 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
884 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
885 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
886 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
887 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
888 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
889 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
890 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
891 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
892 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
893 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 CD |
894 | |
895 | /* Is the given value a sign-extended 32-bit value? */ | |
896 | #define IS_SEXT_32BIT_NUM(x) \ | |
897 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
898 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
899 | ||
900 | /* Is the given value a sign-extended 16-bit value? */ | |
901 | #define IS_SEXT_16BIT_NUM(x) \ | |
902 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
903 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
904 | ||
2051e8c4 MR |
905 | /* Is the given value a zero-extended 32-bit value? Or a negated one? */ |
906 | #define IS_ZEXT_32BIT_NUM(x) \ | |
907 | (((x) &~ (offsetT) 0xffffffff) == 0 \ | |
908 | || (((x) &~ (offsetT) 0xffffffff) == ~ (offsetT) 0xffffffff)) | |
909 | ||
bf12938e RS |
910 | /* Replace bits MASK << SHIFT of STRUCT with the equivalent bits in |
911 | VALUE << SHIFT. VALUE is evaluated exactly once. */ | |
912 | #define INSERT_BITS(STRUCT, VALUE, MASK, SHIFT) \ | |
913 | (STRUCT) = (((STRUCT) & ~((MASK) << (SHIFT))) \ | |
914 | | (((VALUE) & (MASK)) << (SHIFT))) | |
915 | ||
916 | /* Extract bits MASK << SHIFT from STRUCT and shift them right | |
917 | SHIFT places. */ | |
918 | #define EXTRACT_BITS(STRUCT, MASK, SHIFT) \ | |
919 | (((STRUCT) >> (SHIFT)) & (MASK)) | |
920 | ||
921 | /* Change INSN's opcode so that the operand given by FIELD has value VALUE. | |
922 | INSN is a mips_cl_insn structure and VALUE is evaluated exactly once. | |
923 | ||
924 | include/opcode/mips.h specifies operand fields using the macros | |
925 | OP_MASK_<FIELD> and OP_SH_<FIELD>. The MIPS16 equivalents start | |
926 | with "MIPS16OP" instead of "OP". */ | |
927 | #define INSERT_OPERAND(FIELD, INSN, VALUE) \ | |
928 | INSERT_BITS ((INSN).insn_opcode, VALUE, OP_MASK_##FIELD, OP_SH_##FIELD) | |
929 | #define MIPS16_INSERT_OPERAND(FIELD, INSN, VALUE) \ | |
930 | INSERT_BITS ((INSN).insn_opcode, VALUE, \ | |
931 | MIPS16OP_MASK_##FIELD, MIPS16OP_SH_##FIELD) | |
932 | ||
933 | /* Extract the operand given by FIELD from mips_cl_insn INSN. */ | |
934 | #define EXTRACT_OPERAND(FIELD, INSN) \ | |
935 | EXTRACT_BITS ((INSN).insn_opcode, OP_MASK_##FIELD, OP_SH_##FIELD) | |
936 | #define MIPS16_EXTRACT_OPERAND(FIELD, INSN) \ | |
937 | EXTRACT_BITS ((INSN).insn_opcode, \ | |
938 | MIPS16OP_MASK_##FIELD, \ | |
939 | MIPS16OP_SH_##FIELD) | |
4d7206a2 RS |
940 | \f |
941 | /* Global variables used when generating relaxable macros. See the | |
942 | comment above RELAX_ENCODE for more details about how relaxation | |
943 | is used. */ | |
944 | static struct { | |
945 | /* 0 if we're not emitting a relaxable macro. | |
946 | 1 if we're emitting the first of the two relaxation alternatives. | |
947 | 2 if we're emitting the second alternative. */ | |
948 | int sequence; | |
949 | ||
950 | /* The first relaxable fixup in the current frag. (In other words, | |
951 | the first fixup that refers to relaxable code.) */ | |
952 | fixS *first_fixup; | |
953 | ||
954 | /* sizes[0] says how many bytes of the first alternative are stored in | |
955 | the current frag. Likewise sizes[1] for the second alternative. */ | |
956 | unsigned int sizes[2]; | |
957 | ||
958 | /* The symbol on which the choice of sequence depends. */ | |
959 | symbolS *symbol; | |
960 | } mips_relax; | |
252b5132 | 961 | \f |
584892a6 RS |
962 | /* Global variables used to decide whether a macro needs a warning. */ |
963 | static struct { | |
964 | /* True if the macro is in a branch delay slot. */ | |
965 | bfd_boolean delay_slot_p; | |
966 | ||
967 | /* For relaxable macros, sizes[0] is the length of the first alternative | |
968 | in bytes and sizes[1] is the length of the second alternative. | |
969 | For non-relaxable macros, both elements give the length of the | |
970 | macro in bytes. */ | |
971 | unsigned int sizes[2]; | |
972 | ||
973 | /* The first variant frag for this macro. */ | |
974 | fragS *first_frag; | |
975 | } mips_macro_warning; | |
976 | \f | |
252b5132 RH |
977 | /* Prototypes for static functions. */ |
978 | ||
17a2f251 | 979 | #define internalError() \ |
252b5132 | 980 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) |
252b5132 RH |
981 | |
982 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
983 | ||
b34976b6 | 984 | static void append_insn |
4d7206a2 | 985 | (struct mips_cl_insn *ip, expressionS *p, bfd_reloc_code_real_type *r); |
7d10b47d | 986 | static void mips_no_prev_insn (void); |
b34976b6 | 987 | static void mips16_macro_build |
67c0d1eb RS |
988 | (expressionS *, const char *, const char *, va_list); |
989 | static void load_register (int, expressionS *, int); | |
584892a6 RS |
990 | static void macro_start (void); |
991 | static void macro_end (void); | |
17a2f251 TS |
992 | static void macro (struct mips_cl_insn * ip); |
993 | static void mips16_macro (struct mips_cl_insn * ip); | |
252b5132 | 994 | #ifdef LOSING_COMPILER |
17a2f251 | 995 | static void macro2 (struct mips_cl_insn * ip); |
252b5132 | 996 | #endif |
17a2f251 TS |
997 | static void mips_ip (char *str, struct mips_cl_insn * ip); |
998 | static void mips16_ip (char *str, struct mips_cl_insn * ip); | |
b34976b6 | 999 | static void mips16_immed |
17a2f251 TS |
1000 | (char *, unsigned int, int, offsetT, bfd_boolean, bfd_boolean, bfd_boolean, |
1001 | unsigned long *, bfd_boolean *, unsigned short *); | |
5e0116d5 | 1002 | static size_t my_getSmallExpression |
17a2f251 TS |
1003 | (expressionS *, bfd_reloc_code_real_type *, char *); |
1004 | static void my_getExpression (expressionS *, char *); | |
1005 | static void s_align (int); | |
1006 | static void s_change_sec (int); | |
1007 | static void s_change_section (int); | |
1008 | static void s_cons (int); | |
1009 | static void s_float_cons (int); | |
1010 | static void s_mips_globl (int); | |
1011 | static void s_option (int); | |
1012 | static void s_mipsset (int); | |
1013 | static void s_abicalls (int); | |
1014 | static void s_cpload (int); | |
1015 | static void s_cpsetup (int); | |
1016 | static void s_cplocal (int); | |
1017 | static void s_cprestore (int); | |
1018 | static void s_cpreturn (int); | |
1019 | static void s_gpvalue (int); | |
1020 | static void s_gpword (int); | |
1021 | static void s_gpdword (int); | |
1022 | static void s_cpadd (int); | |
1023 | static void s_insn (int); | |
1024 | static void md_obj_begin (void); | |
1025 | static void md_obj_end (void); | |
1026 | static void s_mips_ent (int); | |
1027 | static void s_mips_end (int); | |
1028 | static void s_mips_frame (int); | |
1029 | static void s_mips_mask (int reg_type); | |
1030 | static void s_mips_stab (int); | |
1031 | static void s_mips_weakext (int); | |
1032 | static void s_mips_file (int); | |
1033 | static void s_mips_loc (int); | |
1034 | static bfd_boolean pic_need_relax (symbolS *, asection *); | |
4a6a3df4 | 1035 | static int relaxed_branch_length (fragS *, asection *, int); |
17a2f251 | 1036 | static int validate_mips_insn (const struct mips_opcode *); |
e7af610e NC |
1037 | |
1038 | /* Table and functions used to map between CPU/ISA names, and | |
1039 | ISA levels, and CPU numbers. */ | |
1040 | ||
e972090a NC |
1041 | struct mips_cpu_info |
1042 | { | |
e7af610e | 1043 | const char *name; /* CPU or ISA name. */ |
ad3fea08 | 1044 | int flags; /* ASEs available, or ISA flag. */ |
e7af610e NC |
1045 | int isa; /* ISA level. */ |
1046 | int cpu; /* CPU number (default CPU if ISA). */ | |
1047 | }; | |
1048 | ||
ad3fea08 TS |
1049 | #define MIPS_CPU_IS_ISA 0x0001 /* Is this an ISA? (If 0, a CPU.) */ |
1050 | #define MIPS_CPU_ASE_SMARTMIPS 0x0002 /* CPU implements SmartMIPS ASE */ | |
1051 | #define MIPS_CPU_ASE_DSP 0x0004 /* CPU implements DSP ASE */ | |
1052 | #define MIPS_CPU_ASE_MT 0x0008 /* CPU implements MT ASE */ | |
1053 | #define MIPS_CPU_ASE_MIPS3D 0x0010 /* CPU implements MIPS-3D ASE */ | |
1054 | #define MIPS_CPU_ASE_MDMX 0x0020 /* CPU implements MDMX ASE */ | |
1055 | ||
17a2f251 TS |
1056 | static const struct mips_cpu_info *mips_parse_cpu (const char *, const char *); |
1057 | static const struct mips_cpu_info *mips_cpu_info_from_isa (int); | |
1058 | static const struct mips_cpu_info *mips_cpu_info_from_arch (int); | |
252b5132 RH |
1059 | \f |
1060 | /* Pseudo-op table. | |
1061 | ||
1062 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
1063 | should be defined here, but are currently unsupported: .alias, | |
1064 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
1065 | ||
1066 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1067 | specific to the type of debugging information being generated, and | |
1068 | should be defined by the object format: .aent, .begin, .bend, | |
1069 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
1070 | .vreg. | |
1071 | ||
1072 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
1073 | not MIPS CPU specific, but are also not specific to the object file | |
1074 | format. This file is probably the best place to define them, but | |
1075 | they are not currently supported: .asm0, .endr, .lab, .repeat, | |
1076 | .struct. */ | |
1077 | ||
e972090a NC |
1078 | static const pseudo_typeS mips_pseudo_table[] = |
1079 | { | |
beae10d5 | 1080 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1081 | {"option", s_option, 0}, |
1082 | {"set", s_mipsset, 0}, | |
1083 | {"rdata", s_change_sec, 'r'}, | |
1084 | {"sdata", s_change_sec, 's'}, | |
1085 | {"livereg", s_ignore, 0}, | |
1086 | {"abicalls", s_abicalls, 0}, | |
1087 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1088 | {"cpsetup", s_cpsetup, 0}, |
1089 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1090 | {"cprestore", s_cprestore, 0}, |
6478892d TS |
1091 | {"cpreturn", s_cpreturn, 0}, |
1092 | {"gpvalue", s_gpvalue, 0}, | |
252b5132 | 1093 | {"gpword", s_gpword, 0}, |
10181a0d | 1094 | {"gpdword", s_gpdword, 0}, |
252b5132 RH |
1095 | {"cpadd", s_cpadd, 0}, |
1096 | {"insn", s_insn, 0}, | |
1097 | ||
beae10d5 | 1098 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 RH |
1099 | chips. */ |
1100 | {"asciiz", stringer, 1}, | |
1101 | {"bss", s_change_sec, 'b'}, | |
1102 | {"err", s_err, 0}, | |
1103 | {"half", s_cons, 1}, | |
1104 | {"dword", s_cons, 3}, | |
1105 | {"weakext", s_mips_weakext, 0}, | |
7c752c2a TS |
1106 | {"origin", s_org, 0}, |
1107 | {"repeat", s_rept, 0}, | |
252b5132 | 1108 | |
beae10d5 | 1109 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1110 | here for one reason or another. */ |
1111 | {"align", s_align, 0}, | |
1112 | {"byte", s_cons, 0}, | |
1113 | {"data", s_change_sec, 'd'}, | |
1114 | {"double", s_float_cons, 'd'}, | |
1115 | {"float", s_float_cons, 'f'}, | |
1116 | {"globl", s_mips_globl, 0}, | |
1117 | {"global", s_mips_globl, 0}, | |
1118 | {"hword", s_cons, 1}, | |
1119 | {"int", s_cons, 2}, | |
1120 | {"long", s_cons, 2}, | |
1121 | {"octa", s_cons, 4}, | |
1122 | {"quad", s_cons, 3}, | |
cca86cc8 | 1123 | {"section", s_change_section, 0}, |
252b5132 RH |
1124 | {"short", s_cons, 1}, |
1125 | {"single", s_float_cons, 'f'}, | |
1126 | {"stabn", s_mips_stab, 'n'}, | |
1127 | {"text", s_change_sec, 't'}, | |
1128 | {"word", s_cons, 2}, | |
add56521 | 1129 | |
add56521 | 1130 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1131 | |
43841e91 | 1132 | { NULL, NULL, 0 }, |
252b5132 RH |
1133 | }; |
1134 | ||
e972090a NC |
1135 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1136 | { | |
beae10d5 KH |
1137 | /* These pseudo-ops should be defined by the object file format. |
1138 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1139 | {"aent", s_mips_ent, 1}, |
1140 | {"bgnb", s_ignore, 0}, | |
1141 | {"end", s_mips_end, 0}, | |
1142 | {"endb", s_ignore, 0}, | |
1143 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1144 | {"file", s_mips_file, 0}, |
252b5132 RH |
1145 | {"fmask", s_mips_mask, 'F'}, |
1146 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1147 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1148 | {"mask", s_mips_mask, 'R'}, |
1149 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1150 | { NULL, NULL, 0 }, |
252b5132 RH |
1151 | }; |
1152 | ||
17a2f251 | 1153 | extern void pop_insert (const pseudo_typeS *); |
252b5132 RH |
1154 | |
1155 | void | |
17a2f251 | 1156 | mips_pop_insert (void) |
252b5132 RH |
1157 | { |
1158 | pop_insert (mips_pseudo_table); | |
1159 | if (! ECOFF_DEBUGGING) | |
1160 | pop_insert (mips_nonecoff_pseudo_table); | |
1161 | } | |
1162 | \f | |
1163 | /* Symbols labelling the current insn. */ | |
1164 | ||
e972090a NC |
1165 | struct insn_label_list |
1166 | { | |
252b5132 RH |
1167 | struct insn_label_list *next; |
1168 | symbolS *label; | |
1169 | }; | |
1170 | ||
1171 | static struct insn_label_list *insn_labels; | |
1172 | static struct insn_label_list *free_insn_labels; | |
1173 | ||
17a2f251 | 1174 | static void mips_clear_insn_labels (void); |
252b5132 RH |
1175 | |
1176 | static inline void | |
17a2f251 | 1177 | mips_clear_insn_labels (void) |
252b5132 RH |
1178 | { |
1179 | register struct insn_label_list **pl; | |
1180 | ||
1181 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1182 | ; | |
1183 | *pl = insn_labels; | |
1184 | insn_labels = NULL; | |
1185 | } | |
1186 | \f | |
1187 | static char *expr_end; | |
1188 | ||
1189 | /* Expressions which appear in instructions. These are set by | |
1190 | mips_ip. */ | |
1191 | ||
1192 | static expressionS imm_expr; | |
5f74bc13 | 1193 | static expressionS imm2_expr; |
252b5132 RH |
1194 | static expressionS offset_expr; |
1195 | ||
1196 | /* Relocs associated with imm_expr and offset_expr. */ | |
1197 | ||
f6688943 TS |
1198 | static bfd_reloc_code_real_type imm_reloc[3] |
1199 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
1200 | static bfd_reloc_code_real_type offset_reloc[3] | |
1201 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1202 | |
252b5132 RH |
1203 | /* These are set by mips16_ip if an explicit extension is used. */ |
1204 | ||
b34976b6 | 1205 | static bfd_boolean mips16_small, mips16_ext; |
252b5132 | 1206 | |
7ed4a06a | 1207 | #ifdef OBJ_ELF |
ecb4347a DJ |
1208 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1209 | ECOFF debugging. */ | |
252b5132 RH |
1210 | |
1211 | static segT pdr_seg; | |
7ed4a06a | 1212 | #endif |
252b5132 | 1213 | |
e013f690 TS |
1214 | /* The default target format to use. */ |
1215 | ||
1216 | const char * | |
17a2f251 | 1217 | mips_target_format (void) |
e013f690 TS |
1218 | { |
1219 | switch (OUTPUT_FLAVOR) | |
1220 | { | |
e013f690 TS |
1221 | case bfd_target_ecoff_flavour: |
1222 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
1223 | case bfd_target_coff_flavour: | |
1224 | return "pe-mips"; | |
1225 | case bfd_target_elf_flavour: | |
0a44bf69 RS |
1226 | #ifdef TE_VXWORKS |
1227 | if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI) | |
1228 | return (target_big_endian | |
1229 | ? "elf32-bigmips-vxworks" | |
1230 | : "elf32-littlemips-vxworks"); | |
1231 | #endif | |
e013f690 | 1232 | #ifdef TE_TMIPS |
cfe86eaa | 1233 | /* This is traditional mips. */ |
e013f690 | 1234 | return (target_big_endian |
cfe86eaa TS |
1235 | ? (HAVE_64BIT_OBJECTS |
1236 | ? "elf64-tradbigmips" | |
1237 | : (HAVE_NEWABI | |
1238 | ? "elf32-ntradbigmips" : "elf32-tradbigmips")) | |
1239 | : (HAVE_64BIT_OBJECTS | |
1240 | ? "elf64-tradlittlemips" | |
1241 | : (HAVE_NEWABI | |
1242 | ? "elf32-ntradlittlemips" : "elf32-tradlittlemips"))); | |
e013f690 TS |
1243 | #else |
1244 | return (target_big_endian | |
cfe86eaa TS |
1245 | ? (HAVE_64BIT_OBJECTS |
1246 | ? "elf64-bigmips" | |
1247 | : (HAVE_NEWABI | |
1248 | ? "elf32-nbigmips" : "elf32-bigmips")) | |
1249 | : (HAVE_64BIT_OBJECTS | |
1250 | ? "elf64-littlemips" | |
1251 | : (HAVE_NEWABI | |
1252 | ? "elf32-nlittlemips" : "elf32-littlemips"))); | |
e013f690 TS |
1253 | #endif |
1254 | default: | |
1255 | abort (); | |
1256 | return NULL; | |
1257 | } | |
1258 | } | |
1259 | ||
1e915849 RS |
1260 | /* Return the length of instruction INSN. */ |
1261 | ||
1262 | static inline unsigned int | |
1263 | insn_length (const struct mips_cl_insn *insn) | |
1264 | { | |
1265 | if (!mips_opts.mips16) | |
1266 | return 4; | |
1267 | return insn->mips16_absolute_jump_p || insn->use_extend ? 4 : 2; | |
1268 | } | |
1269 | ||
1270 | /* Initialise INSN from opcode entry MO. Leave its position unspecified. */ | |
1271 | ||
1272 | static void | |
1273 | create_insn (struct mips_cl_insn *insn, const struct mips_opcode *mo) | |
1274 | { | |
1275 | size_t i; | |
1276 | ||
1277 | insn->insn_mo = mo; | |
1278 | insn->use_extend = FALSE; | |
1279 | insn->extend = 0; | |
1280 | insn->insn_opcode = mo->match; | |
1281 | insn->frag = NULL; | |
1282 | insn->where = 0; | |
1283 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1284 | insn->fixp[i] = NULL; | |
1285 | insn->fixed_p = (mips_opts.noreorder > 0); | |
1286 | insn->noreorder_p = (mips_opts.noreorder > 0); | |
1287 | insn->mips16_absolute_jump_p = 0; | |
1288 | } | |
1289 | ||
1290 | /* Install INSN at the location specified by its "frag" and "where" fields. */ | |
1291 | ||
1292 | static void | |
1293 | install_insn (const struct mips_cl_insn *insn) | |
1294 | { | |
1295 | char *f = insn->frag->fr_literal + insn->where; | |
1296 | if (!mips_opts.mips16) | |
1297 | md_number_to_chars (f, insn->insn_opcode, 4); | |
1298 | else if (insn->mips16_absolute_jump_p) | |
1299 | { | |
1300 | md_number_to_chars (f, insn->insn_opcode >> 16, 2); | |
1301 | md_number_to_chars (f + 2, insn->insn_opcode & 0xffff, 2); | |
1302 | } | |
1303 | else | |
1304 | { | |
1305 | if (insn->use_extend) | |
1306 | { | |
1307 | md_number_to_chars (f, 0xf000 | insn->extend, 2); | |
1308 | f += 2; | |
1309 | } | |
1310 | md_number_to_chars (f, insn->insn_opcode, 2); | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | /* Move INSN to offset WHERE in FRAG. Adjust the fixups accordingly | |
1315 | and install the opcode in the new location. */ | |
1316 | ||
1317 | static void | |
1318 | move_insn (struct mips_cl_insn *insn, fragS *frag, long where) | |
1319 | { | |
1320 | size_t i; | |
1321 | ||
1322 | insn->frag = frag; | |
1323 | insn->where = where; | |
1324 | for (i = 0; i < ARRAY_SIZE (insn->fixp); i++) | |
1325 | if (insn->fixp[i] != NULL) | |
1326 | { | |
1327 | insn->fixp[i]->fx_frag = frag; | |
1328 | insn->fixp[i]->fx_where = where; | |
1329 | } | |
1330 | install_insn (insn); | |
1331 | } | |
1332 | ||
1333 | /* Add INSN to the end of the output. */ | |
1334 | ||
1335 | static void | |
1336 | add_fixed_insn (struct mips_cl_insn *insn) | |
1337 | { | |
1338 | char *f = frag_more (insn_length (insn)); | |
1339 | move_insn (insn, frag_now, f - frag_now->fr_literal); | |
1340 | } | |
1341 | ||
1342 | /* Start a variant frag and move INSN to the start of the variant part, | |
1343 | marking it as fixed. The other arguments are as for frag_var. */ | |
1344 | ||
1345 | static void | |
1346 | add_relaxed_insn (struct mips_cl_insn *insn, int max_chars, int var, | |
1347 | relax_substateT subtype, symbolS *symbol, offsetT offset) | |
1348 | { | |
1349 | frag_grow (max_chars); | |
1350 | move_insn (insn, frag_now, frag_more (0) - frag_now->fr_literal); | |
1351 | insn->fixed_p = 1; | |
1352 | frag_var (rs_machine_dependent, max_chars, var, | |
1353 | subtype, symbol, offset, NULL); | |
1354 | } | |
1355 | ||
1356 | /* Insert N copies of INSN into the history buffer, starting at | |
1357 | position FIRST. Neither FIRST nor N need to be clipped. */ | |
1358 | ||
1359 | static void | |
1360 | insert_into_history (unsigned int first, unsigned int n, | |
1361 | const struct mips_cl_insn *insn) | |
1362 | { | |
1363 | if (mips_relax.sequence != 2) | |
1364 | { | |
1365 | unsigned int i; | |
1366 | ||
1367 | for (i = ARRAY_SIZE (history); i-- > first;) | |
1368 | if (i >= first + n) | |
1369 | history[i] = history[i - n]; | |
1370 | else | |
1371 | history[i] = *insn; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | /* Emit a nop instruction, recording it in the history buffer. */ | |
1376 | ||
1377 | static void | |
1378 | emit_nop (void) | |
1379 | { | |
1380 | add_fixed_insn (NOP_INSN); | |
1381 | insert_into_history (0, 1, NOP_INSN); | |
1382 | } | |
1383 | ||
71400594 RS |
1384 | /* Initialize vr4120_conflicts. There is a bit of duplication here: |
1385 | the idea is to make it obvious at a glance that each errata is | |
1386 | included. */ | |
1387 | ||
1388 | static void | |
1389 | init_vr4120_conflicts (void) | |
1390 | { | |
1391 | #define CONFLICT(FIRST, SECOND) \ | |
1392 | vr4120_conflicts[FIX_VR4120_##FIRST] |= 1 << FIX_VR4120_##SECOND | |
1393 | ||
1394 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
1395 | CONFLICT (MACC, DIV); | |
1396 | CONFLICT (DMACC, DIV); | |
1397 | ||
1398 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions. */ | |
1399 | CONFLICT (DMULT, DMULT); | |
1400 | CONFLICT (DMULT, DMACC); | |
1401 | CONFLICT (DMACC, DMULT); | |
1402 | CONFLICT (DMACC, DMACC); | |
1403 | ||
1404 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
1405 | CONFLICT (MACC, MTHILO); | |
1406 | CONFLICT (DMACC, MTHILO); | |
1407 | ||
1408 | /* VR4181A errata MD(1): "If a MULT, MULTU, DMULT or DMULTU | |
1409 | instruction is executed immediately after a MACC or DMACC | |
1410 | instruction, the result of [either instruction] is incorrect." */ | |
1411 | CONFLICT (MACC, MULT); | |
1412 | CONFLICT (MACC, DMULT); | |
1413 | CONFLICT (DMACC, MULT); | |
1414 | CONFLICT (DMACC, DMULT); | |
1415 | ||
1416 | /* VR4181A errata MD(4): "If a MACC or DMACC instruction is | |
1417 | executed immediately after a DMULT, DMULTU, DIV, DIVU, | |
1418 | DDIV or DDIVU instruction, the result of the MACC or | |
1419 | DMACC instruction is incorrect.". */ | |
1420 | CONFLICT (DMULT, MACC); | |
1421 | CONFLICT (DMULT, DMACC); | |
1422 | CONFLICT (DIV, MACC); | |
1423 | CONFLICT (DIV, DMACC); | |
1424 | ||
1425 | #undef CONFLICT | |
1426 | } | |
1427 | ||
707bfff6 TS |
1428 | struct regname { |
1429 | const char *name; | |
1430 | unsigned int num; | |
1431 | }; | |
1432 | ||
1433 | #define RTYPE_MASK 0x1ff00 | |
1434 | #define RTYPE_NUM 0x00100 | |
1435 | #define RTYPE_FPU 0x00200 | |
1436 | #define RTYPE_FCC 0x00400 | |
1437 | #define RTYPE_VEC 0x00800 | |
1438 | #define RTYPE_GP 0x01000 | |
1439 | #define RTYPE_CP0 0x02000 | |
1440 | #define RTYPE_PC 0x04000 | |
1441 | #define RTYPE_ACC 0x08000 | |
1442 | #define RTYPE_CCC 0x10000 | |
1443 | #define RNUM_MASK 0x000ff | |
1444 | #define RWARN 0x80000 | |
1445 | ||
1446 | #define GENERIC_REGISTER_NUMBERS \ | |
1447 | {"$0", RTYPE_NUM | 0}, \ | |
1448 | {"$1", RTYPE_NUM | 1}, \ | |
1449 | {"$2", RTYPE_NUM | 2}, \ | |
1450 | {"$3", RTYPE_NUM | 3}, \ | |
1451 | {"$4", RTYPE_NUM | 4}, \ | |
1452 | {"$5", RTYPE_NUM | 5}, \ | |
1453 | {"$6", RTYPE_NUM | 6}, \ | |
1454 | {"$7", RTYPE_NUM | 7}, \ | |
1455 | {"$8", RTYPE_NUM | 8}, \ | |
1456 | {"$9", RTYPE_NUM | 9}, \ | |
1457 | {"$10", RTYPE_NUM | 10}, \ | |
1458 | {"$11", RTYPE_NUM | 11}, \ | |
1459 | {"$12", RTYPE_NUM | 12}, \ | |
1460 | {"$13", RTYPE_NUM | 13}, \ | |
1461 | {"$14", RTYPE_NUM | 14}, \ | |
1462 | {"$15", RTYPE_NUM | 15}, \ | |
1463 | {"$16", RTYPE_NUM | 16}, \ | |
1464 | {"$17", RTYPE_NUM | 17}, \ | |
1465 | {"$18", RTYPE_NUM | 18}, \ | |
1466 | {"$19", RTYPE_NUM | 19}, \ | |
1467 | {"$20", RTYPE_NUM | 20}, \ | |
1468 | {"$21", RTYPE_NUM | 21}, \ | |
1469 | {"$22", RTYPE_NUM | 22}, \ | |
1470 | {"$23", RTYPE_NUM | 23}, \ | |
1471 | {"$24", RTYPE_NUM | 24}, \ | |
1472 | {"$25", RTYPE_NUM | 25}, \ | |
1473 | {"$26", RTYPE_NUM | 26}, \ | |
1474 | {"$27", RTYPE_NUM | 27}, \ | |
1475 | {"$28", RTYPE_NUM | 28}, \ | |
1476 | {"$29", RTYPE_NUM | 29}, \ | |
1477 | {"$30", RTYPE_NUM | 30}, \ | |
1478 | {"$31", RTYPE_NUM | 31} | |
1479 | ||
1480 | #define FPU_REGISTER_NAMES \ | |
1481 | {"$f0", RTYPE_FPU | 0}, \ | |
1482 | {"$f1", RTYPE_FPU | 1}, \ | |
1483 | {"$f2", RTYPE_FPU | 2}, \ | |
1484 | {"$f3", RTYPE_FPU | 3}, \ | |
1485 | {"$f4", RTYPE_FPU | 4}, \ | |
1486 | {"$f5", RTYPE_FPU | 5}, \ | |
1487 | {"$f6", RTYPE_FPU | 6}, \ | |
1488 | {"$f7", RTYPE_FPU | 7}, \ | |
1489 | {"$f8", RTYPE_FPU | 8}, \ | |
1490 | {"$f9", RTYPE_FPU | 9}, \ | |
1491 | {"$f10", RTYPE_FPU | 10}, \ | |
1492 | {"$f11", RTYPE_FPU | 11}, \ | |
1493 | {"$f12", RTYPE_FPU | 12}, \ | |
1494 | {"$f13", RTYPE_FPU | 13}, \ | |
1495 | {"$f14", RTYPE_FPU | 14}, \ | |
1496 | {"$f15", RTYPE_FPU | 15}, \ | |
1497 | {"$f16", RTYPE_FPU | 16}, \ | |
1498 | {"$f17", RTYPE_FPU | 17}, \ | |
1499 | {"$f18", RTYPE_FPU | 18}, \ | |
1500 | {"$f19", RTYPE_FPU | 19}, \ | |
1501 | {"$f20", RTYPE_FPU | 20}, \ | |
1502 | {"$f21", RTYPE_FPU | 21}, \ | |
1503 | {"$f22", RTYPE_FPU | 22}, \ | |
1504 | {"$f23", RTYPE_FPU | 23}, \ | |
1505 | {"$f24", RTYPE_FPU | 24}, \ | |
1506 | {"$f25", RTYPE_FPU | 25}, \ | |
1507 | {"$f26", RTYPE_FPU | 26}, \ | |
1508 | {"$f27", RTYPE_FPU | 27}, \ | |
1509 | {"$f28", RTYPE_FPU | 28}, \ | |
1510 | {"$f29", RTYPE_FPU | 29}, \ | |
1511 | {"$f30", RTYPE_FPU | 30}, \ | |
1512 | {"$f31", RTYPE_FPU | 31} | |
1513 | ||
1514 | #define FPU_CONDITION_CODE_NAMES \ | |
1515 | {"$fcc0", RTYPE_FCC | 0}, \ | |
1516 | {"$fcc1", RTYPE_FCC | 1}, \ | |
1517 | {"$fcc2", RTYPE_FCC | 2}, \ | |
1518 | {"$fcc3", RTYPE_FCC | 3}, \ | |
1519 | {"$fcc4", RTYPE_FCC | 4}, \ | |
1520 | {"$fcc5", RTYPE_FCC | 5}, \ | |
1521 | {"$fcc6", RTYPE_FCC | 6}, \ | |
1522 | {"$fcc7", RTYPE_FCC | 7} | |
1523 | ||
1524 | #define COPROC_CONDITION_CODE_NAMES \ | |
1525 | {"$cc0", RTYPE_FCC | RTYPE_CCC | 0}, \ | |
1526 | {"$cc1", RTYPE_FCC | RTYPE_CCC | 1}, \ | |
1527 | {"$cc2", RTYPE_FCC | RTYPE_CCC | 2}, \ | |
1528 | {"$cc3", RTYPE_FCC | RTYPE_CCC | 3}, \ | |
1529 | {"$cc4", RTYPE_FCC | RTYPE_CCC | 4}, \ | |
1530 | {"$cc5", RTYPE_FCC | RTYPE_CCC | 5}, \ | |
1531 | {"$cc6", RTYPE_FCC | RTYPE_CCC | 6}, \ | |
1532 | {"$cc7", RTYPE_FCC | RTYPE_CCC | 7} | |
1533 | ||
1534 | #define N32N64_SYMBOLIC_REGISTER_NAMES \ | |
1535 | {"$a4", RTYPE_GP | 8}, \ | |
1536 | {"$a5", RTYPE_GP | 9}, \ | |
1537 | {"$a6", RTYPE_GP | 10}, \ | |
1538 | {"$a7", RTYPE_GP | 11}, \ | |
1539 | {"$ta0", RTYPE_GP | 8}, /* alias for $a4 */ \ | |
1540 | {"$ta1", RTYPE_GP | 9}, /* alias for $a5 */ \ | |
1541 | {"$ta2", RTYPE_GP | 10}, /* alias for $a6 */ \ | |
1542 | {"$ta3", RTYPE_GP | 11}, /* alias for $a7 */ \ | |
1543 | {"$t0", RTYPE_GP | 12}, \ | |
1544 | {"$t1", RTYPE_GP | 13}, \ | |
1545 | {"$t2", RTYPE_GP | 14}, \ | |
1546 | {"$t3", RTYPE_GP | 15} | |
1547 | ||
1548 | #define O32_SYMBOLIC_REGISTER_NAMES \ | |
1549 | {"$t0", RTYPE_GP | 8}, \ | |
1550 | {"$t1", RTYPE_GP | 9}, \ | |
1551 | {"$t2", RTYPE_GP | 10}, \ | |
1552 | {"$t3", RTYPE_GP | 11}, \ | |
1553 | {"$t4", RTYPE_GP | 12}, \ | |
1554 | {"$t5", RTYPE_GP | 13}, \ | |
1555 | {"$t6", RTYPE_GP | 14}, \ | |
1556 | {"$t7", RTYPE_GP | 15}, \ | |
1557 | {"$ta0", RTYPE_GP | 12}, /* alias for $t4 */ \ | |
1558 | {"$ta1", RTYPE_GP | 13}, /* alias for $t5 */ \ | |
1559 | {"$ta2", RTYPE_GP | 14}, /* alias for $t6 */ \ | |
1560 | {"$ta3", RTYPE_GP | 15} /* alias for $t7 */ | |
1561 | ||
1562 | /* Remaining symbolic register names */ | |
1563 | #define SYMBOLIC_REGISTER_NAMES \ | |
1564 | {"$zero", RTYPE_GP | 0}, \ | |
1565 | {"$at", RTYPE_GP | 1}, \ | |
1566 | {"$AT", RTYPE_GP | 1}, \ | |
1567 | {"$v0", RTYPE_GP | 2}, \ | |
1568 | {"$v1", RTYPE_GP | 3}, \ | |
1569 | {"$a0", RTYPE_GP | 4}, \ | |
1570 | {"$a1", RTYPE_GP | 5}, \ | |
1571 | {"$a2", RTYPE_GP | 6}, \ | |
1572 | {"$a3", RTYPE_GP | 7}, \ | |
1573 | {"$s0", RTYPE_GP | 16}, \ | |
1574 | {"$s1", RTYPE_GP | 17}, \ | |
1575 | {"$s2", RTYPE_GP | 18}, \ | |
1576 | {"$s3", RTYPE_GP | 19}, \ | |
1577 | {"$s4", RTYPE_GP | 20}, \ | |
1578 | {"$s5", RTYPE_GP | 21}, \ | |
1579 | {"$s6", RTYPE_GP | 22}, \ | |
1580 | {"$s7", RTYPE_GP | 23}, \ | |
1581 | {"$t8", RTYPE_GP | 24}, \ | |
1582 | {"$t9", RTYPE_GP | 25}, \ | |
1583 | {"$k0", RTYPE_GP | 26}, \ | |
1584 | {"$kt0", RTYPE_GP | 26}, \ | |
1585 | {"$k1", RTYPE_GP | 27}, \ | |
1586 | {"$kt1", RTYPE_GP | 27}, \ | |
1587 | {"$gp", RTYPE_GP | 28}, \ | |
1588 | {"$sp", RTYPE_GP | 29}, \ | |
1589 | {"$s8", RTYPE_GP | 30}, \ | |
1590 | {"$fp", RTYPE_GP | 30}, \ | |
1591 | {"$ra", RTYPE_GP | 31} | |
1592 | ||
1593 | #define MIPS16_SPECIAL_REGISTER_NAMES \ | |
1594 | {"$pc", RTYPE_PC | 0} | |
1595 | ||
1596 | #define MDMX_VECTOR_REGISTER_NAMES \ | |
1597 | /* {"$v0", RTYPE_VEC | 0}, clash with REG 2 above */ \ | |
1598 | /* {"$v1", RTYPE_VEC | 1}, clash with REG 3 above */ \ | |
1599 | {"$v2", RTYPE_VEC | 2}, \ | |
1600 | {"$v3", RTYPE_VEC | 3}, \ | |
1601 | {"$v4", RTYPE_VEC | 4}, \ | |
1602 | {"$v5", RTYPE_VEC | 5}, \ | |
1603 | {"$v6", RTYPE_VEC | 6}, \ | |
1604 | {"$v7", RTYPE_VEC | 7}, \ | |
1605 | {"$v8", RTYPE_VEC | 8}, \ | |
1606 | {"$v9", RTYPE_VEC | 9}, \ | |
1607 | {"$v10", RTYPE_VEC | 10}, \ | |
1608 | {"$v11", RTYPE_VEC | 11}, \ | |
1609 | {"$v12", RTYPE_VEC | 12}, \ | |
1610 | {"$v13", RTYPE_VEC | 13}, \ | |
1611 | {"$v14", RTYPE_VEC | 14}, \ | |
1612 | {"$v15", RTYPE_VEC | 15}, \ | |
1613 | {"$v16", RTYPE_VEC | 16}, \ | |
1614 | {"$v17", RTYPE_VEC | 17}, \ | |
1615 | {"$v18", RTYPE_VEC | 18}, \ | |
1616 | {"$v19", RTYPE_VEC | 19}, \ | |
1617 | {"$v20", RTYPE_VEC | 20}, \ | |
1618 | {"$v21", RTYPE_VEC | 21}, \ | |
1619 | {"$v22", RTYPE_VEC | 22}, \ | |
1620 | {"$v23", RTYPE_VEC | 23}, \ | |
1621 | {"$v24", RTYPE_VEC | 24}, \ | |
1622 | {"$v25", RTYPE_VEC | 25}, \ | |
1623 | {"$v26", RTYPE_VEC | 26}, \ | |
1624 | {"$v27", RTYPE_VEC | 27}, \ | |
1625 | {"$v28", RTYPE_VEC | 28}, \ | |
1626 | {"$v29", RTYPE_VEC | 29}, \ | |
1627 | {"$v30", RTYPE_VEC | 30}, \ | |
1628 | {"$v31", RTYPE_VEC | 31} | |
1629 | ||
1630 | #define MIPS_DSP_ACCUMULATOR_NAMES \ | |
1631 | {"$ac0", RTYPE_ACC | 0}, \ | |
1632 | {"$ac1", RTYPE_ACC | 1}, \ | |
1633 | {"$ac2", RTYPE_ACC | 2}, \ | |
1634 | {"$ac3", RTYPE_ACC | 3} | |
1635 | ||
1636 | static const struct regname reg_names[] = { | |
1637 | GENERIC_REGISTER_NUMBERS, | |
1638 | FPU_REGISTER_NAMES, | |
1639 | FPU_CONDITION_CODE_NAMES, | |
1640 | COPROC_CONDITION_CODE_NAMES, | |
1641 | ||
1642 | /* The $txx registers depends on the abi, | |
1643 | these will be added later into the symbol table from | |
1644 | one of the tables below once mips_abi is set after | |
1645 | parsing of arguments from the command line. */ | |
1646 | SYMBOLIC_REGISTER_NAMES, | |
1647 | ||
1648 | MIPS16_SPECIAL_REGISTER_NAMES, | |
1649 | MDMX_VECTOR_REGISTER_NAMES, | |
1650 | MIPS_DSP_ACCUMULATOR_NAMES, | |
1651 | {0, 0} | |
1652 | }; | |
1653 | ||
1654 | static const struct regname reg_names_o32[] = { | |
1655 | O32_SYMBOLIC_REGISTER_NAMES, | |
1656 | {0, 0} | |
1657 | }; | |
1658 | ||
1659 | static const struct regname reg_names_n32n64[] = { | |
1660 | N32N64_SYMBOLIC_REGISTER_NAMES, | |
1661 | {0, 0} | |
1662 | }; | |
1663 | ||
1664 | static int | |
1665 | reg_lookup (char **s, unsigned int types, unsigned int *regnop) | |
1666 | { | |
1667 | symbolS *symbolP; | |
1668 | char *e; | |
1669 | char save_c; | |
1670 | int reg = -1; | |
1671 | ||
1672 | /* Find end of name. */ | |
1673 | e = *s; | |
1674 | if (is_name_beginner (*e)) | |
1675 | ++e; | |
1676 | while (is_part_of_name (*e)) | |
1677 | ++e; | |
1678 | ||
1679 | /* Terminate name. */ | |
1680 | save_c = *e; | |
1681 | *e = '\0'; | |
1682 | ||
1683 | /* Look for a register symbol. */ | |
1684 | if ((symbolP = symbol_find (*s)) && S_GET_SEGMENT (symbolP) == reg_section) | |
1685 | { | |
1686 | int r = S_GET_VALUE (symbolP); | |
1687 | if (r & types) | |
1688 | reg = r & RNUM_MASK; | |
1689 | else if ((types & RTYPE_VEC) && (r & ~1) == (RTYPE_GP | 2)) | |
1690 | /* Convert GP reg $v0/1 to MDMX reg $v0/1! */ | |
1691 | reg = (r & RNUM_MASK) - 2; | |
1692 | } | |
1693 | /* Else see if this is a register defined in an itbl entry. */ | |
1694 | else if ((types & RTYPE_GP) && itbl_have_entries) | |
1695 | { | |
1696 | char *n = *s; | |
1697 | unsigned long r; | |
1698 | ||
1699 | if (*n == '$') | |
1700 | ++n; | |
1701 | if (itbl_get_reg_val (n, &r)) | |
1702 | reg = r & RNUM_MASK; | |
1703 | } | |
1704 | ||
1705 | /* Advance to next token if a register was recognised. */ | |
1706 | if (reg >= 0) | |
1707 | *s = e; | |
1708 | else if (types & RWARN) | |
1709 | as_warn ("Unrecognized register name `%s'", *s); | |
1710 | ||
1711 | *e = save_c; | |
1712 | if (regnop) | |
1713 | *regnop = reg; | |
1714 | return reg >= 0; | |
1715 | } | |
1716 | ||
1717 | /* This function is called once, at assembler startup time. It should set up | |
1718 | all the tables, etc. that the MD part of the assembler will need. */ | |
156c2f8b | 1719 | |
252b5132 | 1720 | void |
17a2f251 | 1721 | md_begin (void) |
252b5132 | 1722 | { |
3994f87e | 1723 | const char *retval = NULL; |
156c2f8b | 1724 | int i = 0; |
252b5132 | 1725 | int broken = 0; |
1f25f5d3 | 1726 | |
0a44bf69 RS |
1727 | if (mips_pic != NO_PIC) |
1728 | { | |
1729 | if (g_switch_seen && g_switch_value != 0) | |
1730 | as_bad (_("-G may not be used in position-independent code")); | |
1731 | g_switch_value = 0; | |
1732 | } | |
1733 | ||
fef14a42 | 1734 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch)) |
252b5132 RH |
1735 | as_warn (_("Could not set architecture and machine")); |
1736 | ||
252b5132 RH |
1737 | op_hash = hash_new (); |
1738 | ||
1739 | for (i = 0; i < NUMOPCODES;) | |
1740 | { | |
1741 | const char *name = mips_opcodes[i].name; | |
1742 | ||
17a2f251 | 1743 | retval = hash_insert (op_hash, name, (void *) &mips_opcodes[i]); |
252b5132 RH |
1744 | if (retval != NULL) |
1745 | { | |
1746 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
1747 | mips_opcodes[i].name, retval); | |
1748 | /* Probably a memory allocation problem? Give up now. */ | |
1749 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1750 | } | |
1751 | do | |
1752 | { | |
1753 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
1754 | { | |
1755 | if (!validate_mips_insn (&mips_opcodes[i])) | |
1756 | broken = 1; | |
1e915849 RS |
1757 | if (nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
1758 | { | |
1759 | create_insn (&nop_insn, mips_opcodes + i); | |
1760 | nop_insn.fixed_p = 1; | |
1761 | } | |
252b5132 RH |
1762 | } |
1763 | ++i; | |
1764 | } | |
1765 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
1766 | } | |
1767 | ||
1768 | mips16_op_hash = hash_new (); | |
1769 | ||
1770 | i = 0; | |
1771 | while (i < bfd_mips16_num_opcodes) | |
1772 | { | |
1773 | const char *name = mips16_opcodes[i].name; | |
1774 | ||
17a2f251 | 1775 | retval = hash_insert (mips16_op_hash, name, (void *) &mips16_opcodes[i]); |
252b5132 RH |
1776 | if (retval != NULL) |
1777 | as_fatal (_("internal: can't hash `%s': %s"), | |
1778 | mips16_opcodes[i].name, retval); | |
1779 | do | |
1780 | { | |
1781 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
1782 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
1783 | != mips16_opcodes[i].match)) | |
1784 | { | |
1785 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
1786 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
1787 | broken = 1; | |
1788 | } | |
1e915849 RS |
1789 | if (mips16_nop_insn.insn_mo == NULL && strcmp (name, "nop") == 0) |
1790 | { | |
1791 | create_insn (&mips16_nop_insn, mips16_opcodes + i); | |
1792 | mips16_nop_insn.fixed_p = 1; | |
1793 | } | |
252b5132 RH |
1794 | ++i; |
1795 | } | |
1796 | while (i < bfd_mips16_num_opcodes | |
1797 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
1798 | } | |
1799 | ||
1800 | if (broken) | |
1801 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1802 | ||
1803 | /* We add all the general register names to the symbol table. This | |
1804 | helps us detect invalid uses of them. */ | |
707bfff6 TS |
1805 | for (i = 0; reg_names[i].name; i++) |
1806 | symbol_table_insert (symbol_new (reg_names[i].name, reg_section, | |
1807 | reg_names[i].num, // & RNUM_MASK, | |
1808 | &zero_address_frag)); | |
1809 | if (HAVE_NEWABI) | |
1810 | for (i = 0; reg_names_n32n64[i].name; i++) | |
1811 | symbol_table_insert (symbol_new (reg_names_n32n64[i].name, reg_section, | |
1812 | reg_names_n32n64[i].num, // & RNUM_MASK, | |
252b5132 | 1813 | &zero_address_frag)); |
707bfff6 TS |
1814 | else |
1815 | for (i = 0; reg_names_o32[i].name; i++) | |
1816 | symbol_table_insert (symbol_new (reg_names_o32[i].name, reg_section, | |
1817 | reg_names_o32[i].num, // & RNUM_MASK, | |
6047c971 | 1818 | &zero_address_frag)); |
6047c971 | 1819 | |
7d10b47d | 1820 | mips_no_prev_insn (); |
252b5132 RH |
1821 | |
1822 | mips_gprmask = 0; | |
1823 | mips_cprmask[0] = 0; | |
1824 | mips_cprmask[1] = 0; | |
1825 | mips_cprmask[2] = 0; | |
1826 | mips_cprmask[3] = 0; | |
1827 | ||
1828 | /* set the default alignment for the text section (2**2) */ | |
1829 | record_alignment (text_section, 2); | |
1830 | ||
4d0d148d | 1831 | bfd_set_gp_size (stdoutput, g_switch_value); |
252b5132 | 1832 | |
707bfff6 | 1833 | #ifdef OBJ_ELF |
252b5132 RH |
1834 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
1835 | { | |
0a44bf69 RS |
1836 | /* On a native system other than VxWorks, sections must be aligned |
1837 | to 16 byte boundaries. When configured for an embedded ELF | |
1838 | target, we don't bother. */ | |
1839 | if (strcmp (TARGET_OS, "elf") != 0 | |
1840 | && strcmp (TARGET_OS, "vxworks") != 0) | |
252b5132 RH |
1841 | { |
1842 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
1843 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
1844 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
1845 | } | |
1846 | ||
1847 | /* Create a .reginfo section for register masks and a .mdebug | |
1848 | section for debugging information. */ | |
1849 | { | |
1850 | segT seg; | |
1851 | subsegT subseg; | |
1852 | flagword flags; | |
1853 | segT sec; | |
1854 | ||
1855 | seg = now_seg; | |
1856 | subseg = now_subseg; | |
1857 | ||
1858 | /* The ABI says this section should be loaded so that the | |
1859 | running program can access it. However, we don't load it | |
1860 | if we are configured for an embedded target */ | |
1861 | flags = SEC_READONLY | SEC_DATA; | |
1862 | if (strcmp (TARGET_OS, "elf") != 0) | |
1863 | flags |= SEC_ALLOC | SEC_LOAD; | |
1864 | ||
316f5878 | 1865 | if (mips_abi != N64_ABI) |
252b5132 RH |
1866 | { |
1867 | sec = subseg_new (".reginfo", (subsegT) 0); | |
1868 | ||
195325d2 TS |
1869 | bfd_set_section_flags (stdoutput, sec, flags); |
1870 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 1871 | |
252b5132 | 1872 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); |
252b5132 RH |
1873 | } |
1874 | else | |
1875 | { | |
1876 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
1877 | .reginfo section. */ | |
1878 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
1879 | bfd_set_section_flags (stdoutput, sec, flags); |
1880 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 | 1881 | |
252b5132 RH |
1882 | /* Set up the option header. */ |
1883 | { | |
1884 | Elf_Internal_Options opthdr; | |
1885 | char *f; | |
1886 | ||
1887 | opthdr.kind = ODK_REGINFO; | |
1888 | opthdr.size = (sizeof (Elf_External_Options) | |
1889 | + sizeof (Elf64_External_RegInfo)); | |
1890 | opthdr.section = 0; | |
1891 | opthdr.info = 0; | |
1892 | f = frag_more (sizeof (Elf_External_Options)); | |
1893 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
1894 | (Elf_External_Options *) f); | |
1895 | ||
1896 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
1897 | } | |
252b5132 RH |
1898 | } |
1899 | ||
1900 | if (ECOFF_DEBUGGING) | |
1901 | { | |
1902 | sec = subseg_new (".mdebug", (subsegT) 0); | |
1903 | (void) bfd_set_section_flags (stdoutput, sec, | |
1904 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1905 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
1906 | } | |
dcd410fe | 1907 | else if (OUTPUT_FLAVOR == bfd_target_elf_flavour && mips_flag_pdr) |
ecb4347a DJ |
1908 | { |
1909 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
1910 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
1911 | SEC_READONLY | SEC_RELOC | |
1912 | | SEC_DEBUGGING); | |
1913 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
1914 | } | |
252b5132 RH |
1915 | |
1916 | subseg_set (seg, subseg); | |
1917 | } | |
1918 | } | |
707bfff6 | 1919 | #endif /* OBJ_ELF */ |
252b5132 RH |
1920 | |
1921 | if (! ECOFF_DEBUGGING) | |
1922 | md_obj_begin (); | |
71400594 RS |
1923 | |
1924 | if (mips_fix_vr4120) | |
1925 | init_vr4120_conflicts (); | |
252b5132 RH |
1926 | } |
1927 | ||
1928 | void | |
17a2f251 | 1929 | md_mips_end (void) |
252b5132 RH |
1930 | { |
1931 | if (! ECOFF_DEBUGGING) | |
1932 | md_obj_end (); | |
1933 | } | |
1934 | ||
1935 | void | |
17a2f251 | 1936 | md_assemble (char *str) |
252b5132 RH |
1937 | { |
1938 | struct mips_cl_insn insn; | |
f6688943 TS |
1939 | bfd_reloc_code_real_type unused_reloc[3] |
1940 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
1941 | |
1942 | imm_expr.X_op = O_absent; | |
5f74bc13 | 1943 | imm2_expr.X_op = O_absent; |
252b5132 | 1944 | offset_expr.X_op = O_absent; |
f6688943 TS |
1945 | imm_reloc[0] = BFD_RELOC_UNUSED; |
1946 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
1947 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
1948 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
1949 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
1950 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
1951 | |
1952 | if (mips_opts.mips16) | |
1953 | mips16_ip (str, &insn); | |
1954 | else | |
1955 | { | |
1956 | mips_ip (str, &insn); | |
beae10d5 KH |
1957 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
1958 | str, insn.insn_opcode)); | |
252b5132 RH |
1959 | } |
1960 | ||
1961 | if (insn_error) | |
1962 | { | |
1963 | as_bad ("%s `%s'", insn_error, str); | |
1964 | return; | |
1965 | } | |
1966 | ||
1967 | if (insn.insn_mo->pinfo == INSN_MACRO) | |
1968 | { | |
584892a6 | 1969 | macro_start (); |
252b5132 RH |
1970 | if (mips_opts.mips16) |
1971 | mips16_macro (&insn); | |
1972 | else | |
1973 | macro (&insn); | |
584892a6 | 1974 | macro_end (); |
252b5132 RH |
1975 | } |
1976 | else | |
1977 | { | |
1978 | if (imm_expr.X_op != O_absent) | |
4d7206a2 | 1979 | append_insn (&insn, &imm_expr, imm_reloc); |
252b5132 | 1980 | else if (offset_expr.X_op != O_absent) |
4d7206a2 | 1981 | append_insn (&insn, &offset_expr, offset_reloc); |
252b5132 | 1982 | else |
4d7206a2 | 1983 | append_insn (&insn, NULL, unused_reloc); |
252b5132 RH |
1984 | } |
1985 | } | |
1986 | ||
5919d012 | 1987 | /* Return true if the given relocation might need a matching %lo(). |
0a44bf69 RS |
1988 | This is only "might" because SVR4 R_MIPS_GOT16 relocations only |
1989 | need a matching %lo() when applied to local symbols. */ | |
5919d012 RS |
1990 | |
1991 | static inline bfd_boolean | |
17a2f251 | 1992 | reloc_needs_lo_p (bfd_reloc_code_real_type reloc) |
5919d012 | 1993 | { |
3b91255e RS |
1994 | return (HAVE_IN_PLACE_ADDENDS |
1995 | && (reloc == BFD_RELOC_HI16_S | |
0a44bf69 RS |
1996 | || reloc == BFD_RELOC_MIPS16_HI16_S |
1997 | /* VxWorks R_MIPS_GOT16 relocs never need a matching %lo(); | |
1998 | all GOT16 relocations evaluate to "G". */ | |
1999 | || (reloc == BFD_RELOC_MIPS_GOT16 && mips_pic != VXWORKS_PIC))); | |
5919d012 RS |
2000 | } |
2001 | ||
2002 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
2003 | relocation. */ | |
2004 | ||
2005 | static inline bfd_boolean | |
17a2f251 | 2006 | fixup_has_matching_lo_p (fixS *fixp) |
5919d012 RS |
2007 | { |
2008 | return (fixp->fx_next != NULL | |
d6f16593 MR |
2009 | && (fixp->fx_next->fx_r_type == BFD_RELOC_LO16 |
2010 | || fixp->fx_next->fx_r_type == BFD_RELOC_MIPS16_LO16) | |
5919d012 RS |
2011 | && fixp->fx_addsy == fixp->fx_next->fx_addsy |
2012 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
2013 | } | |
2014 | ||
252b5132 RH |
2015 | /* See whether instruction IP reads register REG. CLASS is the type |
2016 | of register. */ | |
2017 | ||
2018 | static int | |
71400594 | 2019 | insn_uses_reg (const struct mips_cl_insn *ip, unsigned int reg, |
17a2f251 | 2020 | enum mips_regclass class) |
252b5132 RH |
2021 | { |
2022 | if (class == MIPS16_REG) | |
2023 | { | |
2024 | assert (mips_opts.mips16); | |
2025 | reg = mips16_to_32_reg_map[reg]; | |
2026 | class = MIPS_GR_REG; | |
2027 | } | |
2028 | ||
85b51719 TS |
2029 | /* Don't report on general register ZERO, since it never changes. */ |
2030 | if (class == MIPS_GR_REG && reg == ZERO) | |
252b5132 RH |
2031 | return 0; |
2032 | ||
2033 | if (class == MIPS_FP_REG) | |
2034 | { | |
2035 | assert (! mips_opts.mips16); | |
2036 | /* If we are called with either $f0 or $f1, we must check $f0. | |
2037 | This is not optimal, because it will introduce an unnecessary | |
2038 | NOP between "lwc1 $f0" and "swc1 $f1". To fix this we would | |
2039 | need to distinguish reading both $f0 and $f1 or just one of | |
2040 | them. Note that we don't have to check the other way, | |
2041 | because there is no instruction that sets both $f0 and $f1 | |
2042 | and requires a delay. */ | |
2043 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_S) | |
bf12938e | 2044 | && ((EXTRACT_OPERAND (FS, *ip) & ~(unsigned) 1) |
252b5132 RH |
2045 | == (reg &~ (unsigned) 1))) |
2046 | return 1; | |
2047 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_T) | |
bf12938e | 2048 | && ((EXTRACT_OPERAND (FT, *ip) & ~(unsigned) 1) |
252b5132 RH |
2049 | == (reg &~ (unsigned) 1))) |
2050 | return 1; | |
2051 | } | |
2052 | else if (! mips_opts.mips16) | |
2053 | { | |
2054 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_S) | |
bf12938e | 2055 | && EXTRACT_OPERAND (RS, *ip) == reg) |
252b5132 RH |
2056 | return 1; |
2057 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_T) | |
bf12938e | 2058 | && EXTRACT_OPERAND (RT, *ip) == reg) |
252b5132 RH |
2059 | return 1; |
2060 | } | |
2061 | else | |
2062 | { | |
2063 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_X) | |
bf12938e | 2064 | && mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, *ip)] == reg) |
252b5132 RH |
2065 | return 1; |
2066 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Y) | |
bf12938e | 2067 | && mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RY, *ip)] == reg) |
252b5132 RH |
2068 | return 1; |
2069 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Z) | |
bf12938e | 2070 | && (mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip)] |
252b5132 RH |
2071 | == reg)) |
2072 | return 1; | |
2073 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_T) && reg == TREG) | |
2074 | return 1; | |
2075 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_SP) && reg == SP) | |
2076 | return 1; | |
2077 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_31) && reg == RA) | |
2078 | return 1; | |
2079 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_GPR_X) | |
bf12938e | 2080 | && MIPS16_EXTRACT_OPERAND (REGR32, *ip) == reg) |
252b5132 RH |
2081 | return 1; |
2082 | } | |
2083 | ||
2084 | return 0; | |
2085 | } | |
2086 | ||
2087 | /* This function returns true if modifying a register requires a | |
2088 | delay. */ | |
2089 | ||
2090 | static int | |
17a2f251 | 2091 | reg_needs_delay (unsigned int reg) |
252b5132 RH |
2092 | { |
2093 | unsigned long prev_pinfo; | |
2094 | ||
47e39b9d | 2095 | prev_pinfo = history[0].insn_mo->pinfo; |
252b5132 | 2096 | if (! mips_opts.noreorder |
81912461 ILT |
2097 | && (((prev_pinfo & INSN_LOAD_MEMORY_DELAY) |
2098 | && ! gpr_interlocks) | |
2099 | || ((prev_pinfo & INSN_LOAD_COPROC_DELAY) | |
2100 | && ! cop_interlocks))) | |
252b5132 | 2101 | { |
81912461 ILT |
2102 | /* A load from a coprocessor or from memory. All load delays |
2103 | delay the use of general register rt for one instruction. */ | |
bdaaa2e1 | 2104 | /* Itbl support may require additional care here. */ |
252b5132 | 2105 | know (prev_pinfo & INSN_WRITE_GPR_T); |
bf12938e | 2106 | if (reg == EXTRACT_OPERAND (RT, history[0])) |
252b5132 RH |
2107 | return 1; |
2108 | } | |
2109 | ||
2110 | return 0; | |
2111 | } | |
2112 | ||
404a8071 RS |
2113 | /* Move all labels in insn_labels to the current insertion point. */ |
2114 | ||
2115 | static void | |
2116 | mips_move_labels (void) | |
2117 | { | |
2118 | struct insn_label_list *l; | |
2119 | valueT val; | |
2120 | ||
2121 | for (l = insn_labels; l != NULL; l = l->next) | |
2122 | { | |
2123 | assert (S_GET_SEGMENT (l->label) == now_seg); | |
2124 | symbol_set_frag (l->label, frag_now); | |
2125 | val = (valueT) frag_now_fix (); | |
2126 | /* mips16 text labels are stored as odd. */ | |
2127 | if (mips_opts.mips16) | |
2128 | ++val; | |
2129 | S_SET_VALUE (l->label, val); | |
2130 | } | |
2131 | } | |
2132 | ||
252b5132 RH |
2133 | /* Mark instruction labels in mips16 mode. This permits the linker to |
2134 | handle them specially, such as generating jalx instructions when | |
2135 | needed. We also make them odd for the duration of the assembly, in | |
2136 | order to generate the right sort of code. We will make them even | |
2137 | in the adjust_symtab routine, while leaving them marked. This is | |
2138 | convenient for the debugger and the disassembler. The linker knows | |
2139 | to make them odd again. */ | |
2140 | ||
2141 | static void | |
17a2f251 | 2142 | mips16_mark_labels (void) |
252b5132 RH |
2143 | { |
2144 | if (mips_opts.mips16) | |
2145 | { | |
2146 | struct insn_label_list *l; | |
98aa84af | 2147 | valueT val; |
252b5132 RH |
2148 | |
2149 | for (l = insn_labels; l != NULL; l = l->next) | |
2150 | { | |
2151 | #ifdef OBJ_ELF | |
2152 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2153 | S_SET_OTHER (l->label, STO_MIPS16); | |
2154 | #endif | |
98aa84af AM |
2155 | val = S_GET_VALUE (l->label); |
2156 | if ((val & 1) == 0) | |
2157 | S_SET_VALUE (l->label, val + 1); | |
252b5132 RH |
2158 | } |
2159 | } | |
2160 | } | |
2161 | ||
4d7206a2 RS |
2162 | /* End the current frag. Make it a variant frag and record the |
2163 | relaxation info. */ | |
2164 | ||
2165 | static void | |
2166 | relax_close_frag (void) | |
2167 | { | |
584892a6 | 2168 | mips_macro_warning.first_frag = frag_now; |
4d7206a2 | 2169 | frag_var (rs_machine_dependent, 0, 0, |
584892a6 | 2170 | RELAX_ENCODE (mips_relax.sizes[0], mips_relax.sizes[1]), |
4d7206a2 RS |
2171 | mips_relax.symbol, 0, (char *) mips_relax.first_fixup); |
2172 | ||
2173 | memset (&mips_relax.sizes, 0, sizeof (mips_relax.sizes)); | |
2174 | mips_relax.first_fixup = 0; | |
2175 | } | |
2176 | ||
2177 | /* Start a new relaxation sequence whose expansion depends on SYMBOL. | |
2178 | See the comment above RELAX_ENCODE for more details. */ | |
2179 | ||
2180 | static void | |
2181 | relax_start (symbolS *symbol) | |
2182 | { | |
2183 | assert (mips_relax.sequence == 0); | |
2184 | mips_relax.sequence = 1; | |
2185 | mips_relax.symbol = symbol; | |
2186 | } | |
2187 | ||
2188 | /* Start generating the second version of a relaxable sequence. | |
2189 | See the comment above RELAX_ENCODE for more details. */ | |
252b5132 RH |
2190 | |
2191 | static void | |
4d7206a2 RS |
2192 | relax_switch (void) |
2193 | { | |
2194 | assert (mips_relax.sequence == 1); | |
2195 | mips_relax.sequence = 2; | |
2196 | } | |
2197 | ||
2198 | /* End the current relaxable sequence. */ | |
2199 | ||
2200 | static void | |
2201 | relax_end (void) | |
2202 | { | |
2203 | assert (mips_relax.sequence == 2); | |
2204 | relax_close_frag (); | |
2205 | mips_relax.sequence = 0; | |
2206 | } | |
2207 | ||
71400594 RS |
2208 | /* Classify an instruction according to the FIX_VR4120_* enumeration. |
2209 | Return NUM_FIX_VR4120_CLASSES if the instruction isn't affected | |
2210 | by VR4120 errata. */ | |
4d7206a2 | 2211 | |
71400594 RS |
2212 | static unsigned int |
2213 | classify_vr4120_insn (const char *name) | |
252b5132 | 2214 | { |
71400594 RS |
2215 | if (strncmp (name, "macc", 4) == 0) |
2216 | return FIX_VR4120_MACC; | |
2217 | if (strncmp (name, "dmacc", 5) == 0) | |
2218 | return FIX_VR4120_DMACC; | |
2219 | if (strncmp (name, "mult", 4) == 0) | |
2220 | return FIX_VR4120_MULT; | |
2221 | if (strncmp (name, "dmult", 5) == 0) | |
2222 | return FIX_VR4120_DMULT; | |
2223 | if (strstr (name, "div")) | |
2224 | return FIX_VR4120_DIV; | |
2225 | if (strcmp (name, "mtlo") == 0 || strcmp (name, "mthi") == 0) | |
2226 | return FIX_VR4120_MTHILO; | |
2227 | return NUM_FIX_VR4120_CLASSES; | |
2228 | } | |
252b5132 | 2229 | |
71400594 RS |
2230 | /* Return the number of instructions that must separate INSN1 and INSN2, |
2231 | where INSN1 is the earlier instruction. Return the worst-case value | |
2232 | for any INSN2 if INSN2 is null. */ | |
252b5132 | 2233 | |
71400594 RS |
2234 | static unsigned int |
2235 | insns_between (const struct mips_cl_insn *insn1, | |
2236 | const struct mips_cl_insn *insn2) | |
2237 | { | |
2238 | unsigned long pinfo1, pinfo2; | |
2239 | ||
2240 | /* This function needs to know which pinfo flags are set for INSN2 | |
2241 | and which registers INSN2 uses. The former is stored in PINFO2 and | |
2242 | the latter is tested via INSN2_USES_REG. If INSN2 is null, PINFO2 | |
2243 | will have every flag set and INSN2_USES_REG will always return true. */ | |
2244 | pinfo1 = insn1->insn_mo->pinfo; | |
2245 | pinfo2 = insn2 ? insn2->insn_mo->pinfo : ~0U; | |
252b5132 | 2246 | |
71400594 RS |
2247 | #define INSN2_USES_REG(REG, CLASS) \ |
2248 | (insn2 == NULL || insn_uses_reg (insn2, REG, CLASS)) | |
2249 | ||
2250 | /* For most targets, write-after-read dependencies on the HI and LO | |
2251 | registers must be separated by at least two instructions. */ | |
2252 | if (!hilo_interlocks) | |
252b5132 | 2253 | { |
71400594 RS |
2254 | if ((pinfo1 & INSN_READ_LO) && (pinfo2 & INSN_WRITE_LO)) |
2255 | return 2; | |
2256 | if ((pinfo1 & INSN_READ_HI) && (pinfo2 & INSN_WRITE_HI)) | |
2257 | return 2; | |
2258 | } | |
2259 | ||
2260 | /* If we're working around r7000 errata, there must be two instructions | |
2261 | between an mfhi or mflo and any instruction that uses the result. */ | |
2262 | if (mips_7000_hilo_fix | |
2263 | && MF_HILO_INSN (pinfo1) | |
2264 | && INSN2_USES_REG (EXTRACT_OPERAND (RD, *insn1), MIPS_GR_REG)) | |
2265 | return 2; | |
2266 | ||
2267 | /* If working around VR4120 errata, check for combinations that need | |
2268 | a single intervening instruction. */ | |
2269 | if (mips_fix_vr4120) | |
2270 | { | |
2271 | unsigned int class1, class2; | |
252b5132 | 2272 | |
71400594 RS |
2273 | class1 = classify_vr4120_insn (insn1->insn_mo->name); |
2274 | if (class1 != NUM_FIX_VR4120_CLASSES && vr4120_conflicts[class1] != 0) | |
252b5132 | 2275 | { |
71400594 RS |
2276 | if (insn2 == NULL) |
2277 | return 1; | |
2278 | class2 = classify_vr4120_insn (insn2->insn_mo->name); | |
2279 | if (vr4120_conflicts[class1] & (1 << class2)) | |
2280 | return 1; | |
252b5132 | 2281 | } |
71400594 RS |
2282 | } |
2283 | ||
2284 | if (!mips_opts.mips16) | |
2285 | { | |
2286 | /* Check for GPR or coprocessor load delays. All such delays | |
2287 | are on the RT register. */ | |
2288 | /* Itbl support may require additional care here. */ | |
2289 | if ((!gpr_interlocks && (pinfo1 & INSN_LOAD_MEMORY_DELAY)) | |
2290 | || (!cop_interlocks && (pinfo1 & INSN_LOAD_COPROC_DELAY))) | |
252b5132 | 2291 | { |
71400594 RS |
2292 | know (pinfo1 & INSN_WRITE_GPR_T); |
2293 | if (INSN2_USES_REG (EXTRACT_OPERAND (RT, *insn1), MIPS_GR_REG)) | |
2294 | return 1; | |
2295 | } | |
2296 | ||
2297 | /* Check for generic coprocessor hazards. | |
2298 | ||
2299 | This case is not handled very well. There is no special | |
2300 | knowledge of CP0 handling, and the coprocessors other than | |
2301 | the floating point unit are not distinguished at all. */ | |
2302 | /* Itbl support may require additional care here. FIXME! | |
2303 | Need to modify this to include knowledge about | |
2304 | user specified delays! */ | |
2305 | else if ((!cop_interlocks && (pinfo1 & INSN_COPROC_MOVE_DELAY)) | |
2306 | || (!cop_mem_interlocks && (pinfo1 & INSN_COPROC_MEMORY_DELAY))) | |
2307 | { | |
2308 | /* Handle cases where INSN1 writes to a known general coprocessor | |
2309 | register. There must be a one instruction delay before INSN2 | |
2310 | if INSN2 reads that register, otherwise no delay is needed. */ | |
2311 | if (pinfo1 & INSN_WRITE_FPR_T) | |
252b5132 | 2312 | { |
71400594 RS |
2313 | if (INSN2_USES_REG (EXTRACT_OPERAND (FT, *insn1), MIPS_FP_REG)) |
2314 | return 1; | |
252b5132 | 2315 | } |
71400594 | 2316 | else if (pinfo1 & INSN_WRITE_FPR_S) |
252b5132 | 2317 | { |
71400594 RS |
2318 | if (INSN2_USES_REG (EXTRACT_OPERAND (FS, *insn1), MIPS_FP_REG)) |
2319 | return 1; | |
252b5132 RH |
2320 | } |
2321 | else | |
2322 | { | |
71400594 RS |
2323 | /* Read-after-write dependencies on the control registers |
2324 | require a two-instruction gap. */ | |
2325 | if ((pinfo1 & INSN_WRITE_COND_CODE) | |
2326 | && (pinfo2 & INSN_READ_COND_CODE)) | |
2327 | return 2; | |
2328 | ||
2329 | /* We don't know exactly what INSN1 does. If INSN2 is | |
2330 | also a coprocessor instruction, assume there must be | |
2331 | a one instruction gap. */ | |
2332 | if (pinfo2 & INSN_COP) | |
2333 | return 1; | |
252b5132 RH |
2334 | } |
2335 | } | |
6b76fefe | 2336 | |
71400594 RS |
2337 | /* Check for read-after-write dependencies on the coprocessor |
2338 | control registers in cases where INSN1 does not need a general | |
2339 | coprocessor delay. This means that INSN1 is a floating point | |
2340 | comparison instruction. */ | |
2341 | /* Itbl support may require additional care here. */ | |
2342 | else if (!cop_interlocks | |
2343 | && (pinfo1 & INSN_WRITE_COND_CODE) | |
2344 | && (pinfo2 & INSN_READ_COND_CODE)) | |
2345 | return 1; | |
2346 | } | |
6b76fefe | 2347 | |
71400594 | 2348 | #undef INSN2_USES_REG |
6b76fefe | 2349 | |
71400594 RS |
2350 | return 0; |
2351 | } | |
6b76fefe | 2352 | |
7d8e00cf RS |
2353 | /* Return the number of nops that would be needed to work around the |
2354 | VR4130 mflo/mfhi errata if instruction INSN immediately followed | |
2355 | the MAX_VR4130_NOPS instructions described by HISTORY. */ | |
2356 | ||
2357 | static int | |
2358 | nops_for_vr4130 (const struct mips_cl_insn *history, | |
2359 | const struct mips_cl_insn *insn) | |
2360 | { | |
2361 | int i, j, reg; | |
2362 | ||
2363 | /* Check if the instruction writes to HI or LO. MTHI and MTLO | |
2364 | are not affected by the errata. */ | |
2365 | if (insn != 0 | |
2366 | && ((insn->insn_mo->pinfo & (INSN_WRITE_HI | INSN_WRITE_LO)) == 0 | |
2367 | || strcmp (insn->insn_mo->name, "mtlo") == 0 | |
2368 | || strcmp (insn->insn_mo->name, "mthi") == 0)) | |
2369 | return 0; | |
2370 | ||
2371 | /* Search for the first MFLO or MFHI. */ | |
2372 | for (i = 0; i < MAX_VR4130_NOPS; i++) | |
2373 | if (!history[i].noreorder_p && MF_HILO_INSN (history[i].insn_mo->pinfo)) | |
2374 | { | |
2375 | /* Extract the destination register. */ | |
2376 | if (mips_opts.mips16) | |
2377 | reg = mips16_to_32_reg_map[MIPS16_EXTRACT_OPERAND (RX, history[i])]; | |
2378 | else | |
2379 | reg = EXTRACT_OPERAND (RD, history[i]); | |
2380 | ||
2381 | /* No nops are needed if INSN reads that register. */ | |
2382 | if (insn != NULL && insn_uses_reg (insn, reg, MIPS_GR_REG)) | |
2383 | return 0; | |
2384 | ||
2385 | /* ...or if any of the intervening instructions do. */ | |
2386 | for (j = 0; j < i; j++) | |
2387 | if (insn_uses_reg (&history[j], reg, MIPS_GR_REG)) | |
2388 | return 0; | |
2389 | ||
2390 | return MAX_VR4130_NOPS - i; | |
2391 | } | |
2392 | return 0; | |
2393 | } | |
2394 | ||
71400594 RS |
2395 | /* Return the number of nops that would be needed if instruction INSN |
2396 | immediately followed the MAX_NOPS instructions given by HISTORY, | |
2397 | where HISTORY[0] is the most recent instruction. If INSN is null, | |
2398 | return the worse-case number of nops for any instruction. */ | |
bdaaa2e1 | 2399 | |
71400594 RS |
2400 | static int |
2401 | nops_for_insn (const struct mips_cl_insn *history, | |
2402 | const struct mips_cl_insn *insn) | |
2403 | { | |
2404 | int i, nops, tmp_nops; | |
bdaaa2e1 | 2405 | |
71400594 | 2406 | nops = 0; |
7d8e00cf | 2407 | for (i = 0; i < MAX_DELAY_NOPS; i++) |
71400594 RS |
2408 | if (!history[i].noreorder_p) |
2409 | { | |
2410 | tmp_nops = insns_between (history + i, insn) - i; | |
2411 | if (tmp_nops > nops) | |
2412 | nops = tmp_nops; | |
2413 | } | |
7d8e00cf RS |
2414 | |
2415 | if (mips_fix_vr4130) | |
2416 | { | |
2417 | tmp_nops = nops_for_vr4130 (history, insn); | |
2418 | if (tmp_nops > nops) | |
2419 | nops = tmp_nops; | |
2420 | } | |
2421 | ||
71400594 RS |
2422 | return nops; |
2423 | } | |
252b5132 | 2424 | |
71400594 RS |
2425 | /* The variable arguments provide NUM_INSNS extra instructions that |
2426 | might be added to HISTORY. Return the largest number of nops that | |
2427 | would be needed after the extended sequence. */ | |
252b5132 | 2428 | |
71400594 RS |
2429 | static int |
2430 | nops_for_sequence (int num_insns, const struct mips_cl_insn *history, ...) | |
2431 | { | |
2432 | va_list args; | |
2433 | struct mips_cl_insn buffer[MAX_NOPS]; | |
2434 | struct mips_cl_insn *cursor; | |
2435 | int nops; | |
2436 | ||
2437 | va_start (args, history); | |
2438 | cursor = buffer + num_insns; | |
2439 | memcpy (cursor, history, (MAX_NOPS - num_insns) * sizeof (*cursor)); | |
2440 | while (cursor > buffer) | |
2441 | *--cursor = *va_arg (args, const struct mips_cl_insn *); | |
2442 | ||
2443 | nops = nops_for_insn (buffer, NULL); | |
2444 | va_end (args); | |
2445 | return nops; | |
2446 | } | |
252b5132 | 2447 | |
71400594 RS |
2448 | /* Like nops_for_insn, but if INSN is a branch, take into account the |
2449 | worst-case delay for the branch target. */ | |
252b5132 | 2450 | |
71400594 RS |
2451 | static int |
2452 | nops_for_insn_or_target (const struct mips_cl_insn *history, | |
2453 | const struct mips_cl_insn *insn) | |
2454 | { | |
2455 | int nops, tmp_nops; | |
60b63b72 | 2456 | |
71400594 RS |
2457 | nops = nops_for_insn (history, insn); |
2458 | if (insn->insn_mo->pinfo & (INSN_UNCOND_BRANCH_DELAY | |
2459 | | INSN_COND_BRANCH_DELAY | |
2460 | | INSN_COND_BRANCH_LIKELY)) | |
2461 | { | |
2462 | tmp_nops = nops_for_sequence (2, history, insn, NOP_INSN); | |
2463 | if (tmp_nops > nops) | |
2464 | nops = tmp_nops; | |
2465 | } | |
2466 | else if (mips_opts.mips16 && (insn->insn_mo->pinfo & MIPS16_INSN_BRANCH)) | |
2467 | { | |
2468 | tmp_nops = nops_for_sequence (1, history, insn); | |
2469 | if (tmp_nops > nops) | |
2470 | nops = tmp_nops; | |
2471 | } | |
2472 | return nops; | |
2473 | } | |
2474 | ||
2475 | /* Output an instruction. IP is the instruction information. | |
2476 | ADDRESS_EXPR is an operand of the instruction to be used with | |
2477 | RELOC_TYPE. */ | |
2478 | ||
2479 | static void | |
2480 | append_insn (struct mips_cl_insn *ip, expressionS *address_expr, | |
2481 | bfd_reloc_code_real_type *reloc_type) | |
2482 | { | |
3994f87e | 2483 | unsigned long prev_pinfo, pinfo; |
71400594 RS |
2484 | relax_stateT prev_insn_frag_type = 0; |
2485 | bfd_boolean relaxed_branch = FALSE; | |
2486 | ||
2487 | /* Mark instruction labels in mips16 mode. */ | |
2488 | mips16_mark_labels (); | |
2489 | ||
2490 | prev_pinfo = history[0].insn_mo->pinfo; | |
2491 | pinfo = ip->insn_mo->pinfo; | |
2492 | ||
2493 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) | |
2494 | { | |
2495 | /* There are a lot of optimizations we could do that we don't. | |
2496 | In particular, we do not, in general, reorder instructions. | |
2497 | If you use gcc with optimization, it will reorder | |
2498 | instructions and generally do much more optimization then we | |
2499 | do here; repeating all that work in the assembler would only | |
2500 | benefit hand written assembly code, and does not seem worth | |
2501 | it. */ | |
2502 | int nops = (mips_optimize == 0 | |
2503 | ? nops_for_insn (history, NULL) | |
2504 | : nops_for_insn_or_target (history, ip)); | |
2505 | if (nops > 0) | |
252b5132 RH |
2506 | { |
2507 | fragS *old_frag; | |
2508 | unsigned long old_frag_offset; | |
2509 | int i; | |
252b5132 RH |
2510 | |
2511 | old_frag = frag_now; | |
2512 | old_frag_offset = frag_now_fix (); | |
2513 | ||
2514 | for (i = 0; i < nops; i++) | |
2515 | emit_nop (); | |
2516 | ||
2517 | if (listing) | |
2518 | { | |
2519 | listing_prev_line (); | |
2520 | /* We may be at the start of a variant frag. In case we | |
2521 | are, make sure there is enough space for the frag | |
2522 | after the frags created by listing_prev_line. The | |
2523 | argument to frag_grow here must be at least as large | |
2524 | as the argument to all other calls to frag_grow in | |
2525 | this file. We don't have to worry about being in the | |
2526 | middle of a variant frag, because the variants insert | |
2527 | all needed nop instructions themselves. */ | |
2528 | frag_grow (40); | |
2529 | } | |
2530 | ||
404a8071 | 2531 | mips_move_labels (); |
252b5132 RH |
2532 | |
2533 | #ifndef NO_ECOFF_DEBUGGING | |
2534 | if (ECOFF_DEBUGGING) | |
2535 | ecoff_fix_loc (old_frag, old_frag_offset); | |
2536 | #endif | |
2537 | } | |
71400594 RS |
2538 | } |
2539 | else if (mips_relax.sequence != 2 && prev_nop_frag != NULL) | |
2540 | { | |
2541 | /* Work out how many nops in prev_nop_frag are needed by IP. */ | |
2542 | int nops = nops_for_insn_or_target (history, ip); | |
2543 | assert (nops <= prev_nop_frag_holds); | |
252b5132 | 2544 | |
71400594 RS |
2545 | /* Enforce NOPS as a minimum. */ |
2546 | if (nops > prev_nop_frag_required) | |
2547 | prev_nop_frag_required = nops; | |
252b5132 | 2548 | |
71400594 RS |
2549 | if (prev_nop_frag_holds == prev_nop_frag_required) |
2550 | { | |
2551 | /* Settle for the current number of nops. Update the history | |
2552 | accordingly (for the benefit of any future .set reorder code). */ | |
2553 | prev_nop_frag = NULL; | |
2554 | insert_into_history (prev_nop_frag_since, | |
2555 | prev_nop_frag_holds, NOP_INSN); | |
2556 | } | |
2557 | else | |
2558 | { | |
2559 | /* Allow this instruction to replace one of the nops that was | |
2560 | tentatively added to prev_nop_frag. */ | |
2561 | prev_nop_frag->fr_fix -= mips_opts.mips16 ? 2 : 4; | |
2562 | prev_nop_frag_holds--; | |
2563 | prev_nop_frag_since++; | |
252b5132 RH |
2564 | } |
2565 | } | |
2566 | ||
58e2ea4d MR |
2567 | #ifdef OBJ_ELF |
2568 | /* The value passed to dwarf2_emit_insn is the distance between | |
2569 | the beginning of the current instruction and the address that | |
2570 | should be recorded in the debug tables. For MIPS16 debug info | |
2571 | we want to use ISA-encoded addresses, so we pass -1 for an | |
2572 | address higher by one than the current. */ | |
2573 | dwarf2_emit_insn (mips_opts.mips16 ? -1 : 0); | |
2574 | #endif | |
2575 | ||
895921c9 | 2576 | /* Record the frag type before frag_var. */ |
47e39b9d RS |
2577 | if (history[0].frag) |
2578 | prev_insn_frag_type = history[0].frag->fr_type; | |
895921c9 | 2579 | |
4d7206a2 | 2580 | if (address_expr |
0b25d3e6 | 2581 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
4a6a3df4 AO |
2582 | && (pinfo & INSN_UNCOND_BRANCH_DELAY || pinfo & INSN_COND_BRANCH_DELAY |
2583 | || pinfo & INSN_COND_BRANCH_LIKELY) | |
2584 | && mips_relax_branch | |
2585 | /* Don't try branch relaxation within .set nomacro, or within | |
2586 | .set noat if we use $at for PIC computations. If it turns | |
2587 | out that the branch was out-of-range, we'll get an error. */ | |
2588 | && !mips_opts.warn_about_macros | |
2589 | && !(mips_opts.noat && mips_pic != NO_PIC) | |
2590 | && !mips_opts.mips16) | |
2591 | { | |
895921c9 | 2592 | relaxed_branch = TRUE; |
1e915849 RS |
2593 | add_relaxed_insn (ip, (relaxed_branch_length |
2594 | (NULL, NULL, | |
2595 | (pinfo & INSN_UNCOND_BRANCH_DELAY) ? -1 | |
2596 | : (pinfo & INSN_COND_BRANCH_LIKELY) ? 1 | |
2597 | : 0)), 4, | |
2598 | RELAX_BRANCH_ENCODE | |
2599 | (pinfo & INSN_UNCOND_BRANCH_DELAY, | |
2600 | pinfo & INSN_COND_BRANCH_LIKELY, | |
2601 | pinfo & INSN_WRITE_GPR_31, | |
2602 | 0), | |
2603 | address_expr->X_add_symbol, | |
2604 | address_expr->X_add_number); | |
4a6a3df4 AO |
2605 | *reloc_type = BFD_RELOC_UNUSED; |
2606 | } | |
2607 | else if (*reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
2608 | { |
2609 | /* We need to set up a variant frag. */ | |
2610 | assert (mips_opts.mips16 && address_expr != NULL); | |
1e915849 RS |
2611 | add_relaxed_insn (ip, 4, 0, |
2612 | RELAX_MIPS16_ENCODE | |
2613 | (*reloc_type - BFD_RELOC_UNUSED, | |
2614 | mips16_small, mips16_ext, | |
2615 | prev_pinfo & INSN_UNCOND_BRANCH_DELAY, | |
2616 | history[0].mips16_absolute_jump_p), | |
2617 | make_expr_symbol (address_expr), 0); | |
252b5132 | 2618 | } |
252b5132 RH |
2619 | else if (mips_opts.mips16 |
2620 | && ! ip->use_extend | |
f6688943 | 2621 | && *reloc_type != BFD_RELOC_MIPS16_JMP) |
9497f5ac | 2622 | { |
b8ee1a6e DU |
2623 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) == 0) |
2624 | /* Make sure there is enough room to swap this instruction with | |
2625 | a following jump instruction. */ | |
2626 | frag_grow (6); | |
1e915849 | 2627 | add_fixed_insn (ip); |
252b5132 RH |
2628 | } |
2629 | else | |
2630 | { | |
2631 | if (mips_opts.mips16 | |
2632 | && mips_opts.noreorder | |
2633 | && (prev_pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) | |
2634 | as_warn (_("extended instruction in delay slot")); | |
2635 | ||
4d7206a2 RS |
2636 | if (mips_relax.sequence) |
2637 | { | |
2638 | /* If we've reached the end of this frag, turn it into a variant | |
2639 | frag and record the information for the instructions we've | |
2640 | written so far. */ | |
2641 | if (frag_room () < 4) | |
2642 | relax_close_frag (); | |
2643 | mips_relax.sizes[mips_relax.sequence - 1] += 4; | |
2644 | } | |
2645 | ||
584892a6 RS |
2646 | if (mips_relax.sequence != 2) |
2647 | mips_macro_warning.sizes[0] += 4; | |
2648 | if (mips_relax.sequence != 1) | |
2649 | mips_macro_warning.sizes[1] += 4; | |
2650 | ||
1e915849 RS |
2651 | if (mips_opts.mips16) |
2652 | { | |
2653 | ip->fixed_p = 1; | |
2654 | ip->mips16_absolute_jump_p = (*reloc_type == BFD_RELOC_MIPS16_JMP); | |
2655 | } | |
2656 | add_fixed_insn (ip); | |
252b5132 RH |
2657 | } |
2658 | ||
01a3f561 | 2659 | if (address_expr != NULL && *reloc_type <= BFD_RELOC_UNUSED) |
252b5132 RH |
2660 | { |
2661 | if (address_expr->X_op == O_constant) | |
2662 | { | |
f17c130b | 2663 | unsigned int tmp; |
f6688943 TS |
2664 | |
2665 | switch (*reloc_type) | |
252b5132 RH |
2666 | { |
2667 | case BFD_RELOC_32: | |
2668 | ip->insn_opcode |= address_expr->X_add_number; | |
2669 | break; | |
2670 | ||
f6688943 | 2671 | case BFD_RELOC_MIPS_HIGHEST: |
f17c130b AM |
2672 | tmp = (address_expr->X_add_number + 0x800080008000ull) >> 48; |
2673 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
2674 | break; |
2675 | ||
2676 | case BFD_RELOC_MIPS_HIGHER: | |
f17c130b AM |
2677 | tmp = (address_expr->X_add_number + 0x80008000ull) >> 32; |
2678 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
2679 | break; |
2680 | ||
2681 | case BFD_RELOC_HI16_S: | |
f17c130b AM |
2682 | tmp = (address_expr->X_add_number + 0x8000) >> 16; |
2683 | ip->insn_opcode |= tmp & 0xffff; | |
f6688943 TS |
2684 | break; |
2685 | ||
2686 | case BFD_RELOC_HI16: | |
2687 | ip->insn_opcode |= (address_expr->X_add_number >> 16) & 0xffff; | |
2688 | break; | |
2689 | ||
01a3f561 | 2690 | case BFD_RELOC_UNUSED: |
252b5132 | 2691 | case BFD_RELOC_LO16: |
ed6fb7bd | 2692 | case BFD_RELOC_MIPS_GOT_DISP: |
252b5132 RH |
2693 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; |
2694 | break; | |
2695 | ||
2696 | case BFD_RELOC_MIPS_JMP: | |
2697 | if ((address_expr->X_add_number & 3) != 0) | |
2698 | as_bad (_("jump to misaligned address (0x%lx)"), | |
2699 | (unsigned long) address_expr->X_add_number); | |
2700 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0x3ffffff; | |
2701 | break; | |
2702 | ||
2703 | case BFD_RELOC_MIPS16_JMP: | |
2704 | if ((address_expr->X_add_number & 3) != 0) | |
2705 | as_bad (_("jump to misaligned address (0x%lx)"), | |
2706 | (unsigned long) address_expr->X_add_number); | |
2707 | ip->insn_opcode |= | |
2708 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
2709 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
2710 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
2711 | break; | |
2712 | ||
252b5132 | 2713 | case BFD_RELOC_16_PCREL_S2: |
bad36eac DJ |
2714 | if ((address_expr->X_add_number & 3) != 0) |
2715 | as_bad (_("branch to misaligned address (0x%lx)"), | |
2716 | (unsigned long) address_expr->X_add_number); | |
2717 | if (mips_relax_branch) | |
2718 | goto need_reloc; | |
2719 | if ((address_expr->X_add_number + 0x20000) & ~0x3ffff) | |
2720 | as_bad (_("branch address range overflow (0x%lx)"), | |
2721 | (unsigned long) address_expr->X_add_number); | |
2722 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0xffff; | |
2723 | break; | |
252b5132 RH |
2724 | |
2725 | default: | |
2726 | internalError (); | |
2727 | } | |
2728 | } | |
01a3f561 | 2729 | else if (*reloc_type < BFD_RELOC_UNUSED) |
252b5132 | 2730 | need_reloc: |
4d7206a2 RS |
2731 | { |
2732 | reloc_howto_type *howto; | |
2733 | int i; | |
34ce925e | 2734 | |
4d7206a2 RS |
2735 | /* In a compound relocation, it is the final (outermost) |
2736 | operator that determines the relocated field. */ | |
2737 | for (i = 1; i < 3; i++) | |
2738 | if (reloc_type[i] == BFD_RELOC_UNUSED) | |
2739 | break; | |
34ce925e | 2740 | |
4d7206a2 | 2741 | howto = bfd_reloc_type_lookup (stdoutput, reloc_type[i - 1]); |
1e915849 RS |
2742 | ip->fixp[0] = fix_new_exp (ip->frag, ip->where, |
2743 | bfd_get_reloc_size (howto), | |
2744 | address_expr, | |
2745 | reloc_type[0] == BFD_RELOC_16_PCREL_S2, | |
2746 | reloc_type[0]); | |
4d7206a2 RS |
2747 | |
2748 | /* These relocations can have an addend that won't fit in | |
2749 | 4 octets for 64bit assembly. */ | |
2750 | if (HAVE_64BIT_GPRS | |
2751 | && ! howto->partial_inplace | |
2752 | && (reloc_type[0] == BFD_RELOC_16 | |
2753 | || reloc_type[0] == BFD_RELOC_32 | |
2754 | || reloc_type[0] == BFD_RELOC_MIPS_JMP | |
2755 | || reloc_type[0] == BFD_RELOC_HI16_S | |
2756 | || reloc_type[0] == BFD_RELOC_LO16 | |
2757 | || reloc_type[0] == BFD_RELOC_GPREL16 | |
2758 | || reloc_type[0] == BFD_RELOC_MIPS_LITERAL | |
2759 | || reloc_type[0] == BFD_RELOC_GPREL32 | |
2760 | || reloc_type[0] == BFD_RELOC_64 | |
2761 | || reloc_type[0] == BFD_RELOC_CTOR | |
2762 | || reloc_type[0] == BFD_RELOC_MIPS_SUB | |
2763 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHEST | |
2764 | || reloc_type[0] == BFD_RELOC_MIPS_HIGHER | |
2765 | || reloc_type[0] == BFD_RELOC_MIPS_SCN_DISP | |
2766 | || reloc_type[0] == BFD_RELOC_MIPS_REL16 | |
d6f16593 MR |
2767 | || reloc_type[0] == BFD_RELOC_MIPS_RELGOT |
2768 | || reloc_type[0] == BFD_RELOC_MIPS16_GPREL | |
2769 | || reloc_type[0] == BFD_RELOC_MIPS16_HI16_S | |
2770 | || reloc_type[0] == BFD_RELOC_MIPS16_LO16)) | |
1e915849 | 2771 | ip->fixp[0]->fx_no_overflow = 1; |
4d7206a2 RS |
2772 | |
2773 | if (mips_relax.sequence) | |
2774 | { | |
2775 | if (mips_relax.first_fixup == 0) | |
1e915849 | 2776 | mips_relax.first_fixup = ip->fixp[0]; |
4d7206a2 RS |
2777 | } |
2778 | else if (reloc_needs_lo_p (*reloc_type)) | |
2779 | { | |
2780 | struct mips_hi_fixup *hi_fixup; | |
252b5132 | 2781 | |
4d7206a2 RS |
2782 | /* Reuse the last entry if it already has a matching %lo. */ |
2783 | hi_fixup = mips_hi_fixup_list; | |
2784 | if (hi_fixup == 0 | |
2785 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
2786 | { | |
2787 | hi_fixup = ((struct mips_hi_fixup *) | |
2788 | xmalloc (sizeof (struct mips_hi_fixup))); | |
2789 | hi_fixup->next = mips_hi_fixup_list; | |
2790 | mips_hi_fixup_list = hi_fixup; | |
252b5132 | 2791 | } |
1e915849 | 2792 | hi_fixup->fixp = ip->fixp[0]; |
4d7206a2 RS |
2793 | hi_fixup->seg = now_seg; |
2794 | } | |
f6688943 | 2795 | |
4d7206a2 RS |
2796 | /* Add fixups for the second and third relocations, if given. |
2797 | Note that the ABI allows the second relocation to be | |
2798 | against RSS_UNDEF, RSS_GP, RSS_GP0 or RSS_LOC. At the | |
2799 | moment we only use RSS_UNDEF, but we could add support | |
2800 | for the others if it ever becomes necessary. */ | |
2801 | for (i = 1; i < 3; i++) | |
2802 | if (reloc_type[i] != BFD_RELOC_UNUSED) | |
2803 | { | |
1e915849 RS |
2804 | ip->fixp[i] = fix_new (ip->frag, ip->where, |
2805 | ip->fixp[0]->fx_size, NULL, 0, | |
2806 | FALSE, reloc_type[i]); | |
b1dca8ee RS |
2807 | |
2808 | /* Use fx_tcbit to mark compound relocs. */ | |
1e915849 RS |
2809 | ip->fixp[0]->fx_tcbit = 1; |
2810 | ip->fixp[i]->fx_tcbit = 1; | |
4d7206a2 | 2811 | } |
252b5132 RH |
2812 | } |
2813 | } | |
1e915849 | 2814 | install_insn (ip); |
252b5132 RH |
2815 | |
2816 | /* Update the register mask information. */ | |
2817 | if (! mips_opts.mips16) | |
2818 | { | |
2819 | if (pinfo & INSN_WRITE_GPR_D) | |
bf12938e | 2820 | mips_gprmask |= 1 << EXTRACT_OPERAND (RD, *ip); |
252b5132 | 2821 | if ((pinfo & (INSN_WRITE_GPR_T | INSN_READ_GPR_T)) != 0) |
bf12938e | 2822 | mips_gprmask |= 1 << EXTRACT_OPERAND (RT, *ip); |
252b5132 | 2823 | if (pinfo & INSN_READ_GPR_S) |
bf12938e | 2824 | mips_gprmask |= 1 << EXTRACT_OPERAND (RS, *ip); |
252b5132 | 2825 | if (pinfo & INSN_WRITE_GPR_31) |
f9419b05 | 2826 | mips_gprmask |= 1 << RA; |
252b5132 | 2827 | if (pinfo & INSN_WRITE_FPR_D) |
bf12938e | 2828 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FD, *ip); |
252b5132 | 2829 | if ((pinfo & (INSN_WRITE_FPR_S | INSN_READ_FPR_S)) != 0) |
bf12938e | 2830 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FS, *ip); |
252b5132 | 2831 | if ((pinfo & (INSN_WRITE_FPR_T | INSN_READ_FPR_T)) != 0) |
bf12938e | 2832 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FT, *ip); |
252b5132 | 2833 | if ((pinfo & INSN_READ_FPR_R) != 0) |
bf12938e | 2834 | mips_cprmask[1] |= 1 << EXTRACT_OPERAND (FR, *ip); |
252b5132 RH |
2835 | if (pinfo & INSN_COP) |
2836 | { | |
bdaaa2e1 KH |
2837 | /* We don't keep enough information to sort these cases out. |
2838 | The itbl support does keep this information however, although | |
2839 | we currently don't support itbl fprmats as part of the cop | |
2840 | instruction. May want to add this support in the future. */ | |
252b5132 RH |
2841 | } |
2842 | /* Never set the bit for $0, which is always zero. */ | |
beae10d5 | 2843 | mips_gprmask &= ~1 << 0; |
252b5132 RH |
2844 | } |
2845 | else | |
2846 | { | |
2847 | if (pinfo & (MIPS16_INSN_WRITE_X | MIPS16_INSN_READ_X)) | |
bf12938e | 2848 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RX, *ip); |
252b5132 | 2849 | if (pinfo & (MIPS16_INSN_WRITE_Y | MIPS16_INSN_READ_Y)) |
bf12938e | 2850 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RY, *ip); |
252b5132 | 2851 | if (pinfo & MIPS16_INSN_WRITE_Z) |
bf12938e | 2852 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (RZ, *ip); |
252b5132 RH |
2853 | if (pinfo & (MIPS16_INSN_WRITE_T | MIPS16_INSN_READ_T)) |
2854 | mips_gprmask |= 1 << TREG; | |
2855 | if (pinfo & (MIPS16_INSN_WRITE_SP | MIPS16_INSN_READ_SP)) | |
2856 | mips_gprmask |= 1 << SP; | |
2857 | if (pinfo & (MIPS16_INSN_WRITE_31 | MIPS16_INSN_READ_31)) | |
2858 | mips_gprmask |= 1 << RA; | |
2859 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2860 | mips_gprmask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
2861 | if (pinfo & MIPS16_INSN_READ_Z) | |
bf12938e | 2862 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (MOVE32Z, *ip); |
252b5132 | 2863 | if (pinfo & MIPS16_INSN_READ_GPR_X) |
bf12938e | 2864 | mips_gprmask |= 1 << MIPS16_EXTRACT_OPERAND (REGR32, *ip); |
252b5132 RH |
2865 | } |
2866 | ||
4d7206a2 | 2867 | if (mips_relax.sequence != 2 && !mips_opts.noreorder) |
252b5132 RH |
2868 | { |
2869 | /* Filling the branch delay slot is more complex. We try to | |
2870 | switch the branch with the previous instruction, which we can | |
2871 | do if the previous instruction does not set up a condition | |
2872 | that the branch tests and if the branch is not itself the | |
2873 | target of any branch. */ | |
2874 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) | |
2875 | || (pinfo & INSN_COND_BRANCH_DELAY)) | |
2876 | { | |
2877 | if (mips_optimize < 2 | |
2878 | /* If we have seen .set volatile or .set nomove, don't | |
2879 | optimize. */ | |
2880 | || mips_opts.nomove != 0 | |
a38419a5 RS |
2881 | /* We can't swap if the previous instruction's position |
2882 | is fixed. */ | |
2883 | || history[0].fixed_p | |
252b5132 RH |
2884 | /* If the previous previous insn was in a .set |
2885 | noreorder, we can't swap. Actually, the MIPS | |
2886 | assembler will swap in this situation. However, gcc | |
2887 | configured -with-gnu-as will generate code like | |
2888 | .set noreorder | |
2889 | lw $4,XXX | |
2890 | .set reorder | |
2891 | INSN | |
2892 | bne $4,$0,foo | |
2893 | in which we can not swap the bne and INSN. If gcc is | |
2894 | not configured -with-gnu-as, it does not output the | |
a38419a5 | 2895 | .set pseudo-ops. */ |
47e39b9d | 2896 | || history[1].noreorder_p |
252b5132 RH |
2897 | /* If the branch is itself the target of a branch, we |
2898 | can not swap. We cheat on this; all we check for is | |
2899 | whether there is a label on this instruction. If | |
2900 | there are any branches to anything other than a | |
2901 | label, users must use .set noreorder. */ | |
2902 | || insn_labels != NULL | |
895921c9 MR |
2903 | /* If the previous instruction is in a variant frag |
2904 | other than this branch's one, we cannot do the swap. | |
2905 | This does not apply to the mips16, which uses variant | |
2906 | frags for different purposes. */ | |
252b5132 | 2907 | || (! mips_opts.mips16 |
895921c9 | 2908 | && prev_insn_frag_type == rs_machine_dependent) |
71400594 RS |
2909 | /* Check for conflicts between the branch and the instructions |
2910 | before the candidate delay slot. */ | |
2911 | || nops_for_insn (history + 1, ip) > 0 | |
2912 | /* Check for conflicts between the swapped sequence and the | |
2913 | target of the branch. */ | |
2914 | || nops_for_sequence (2, history + 1, ip, history) > 0 | |
252b5132 RH |
2915 | /* We do not swap with a trap instruction, since it |
2916 | complicates trap handlers to have the trap | |
2917 | instruction be in a delay slot. */ | |
2918 | || (prev_pinfo & INSN_TRAP) | |
2919 | /* If the branch reads a register that the previous | |
2920 | instruction sets, we can not swap. */ | |
2921 | || (! mips_opts.mips16 | |
2922 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
bf12938e | 2923 | && insn_uses_reg (ip, EXTRACT_OPERAND (RT, history[0]), |
252b5132 RH |
2924 | MIPS_GR_REG)) |
2925 | || (! mips_opts.mips16 | |
2926 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
bf12938e | 2927 | && insn_uses_reg (ip, EXTRACT_OPERAND (RD, history[0]), |
252b5132 RH |
2928 | MIPS_GR_REG)) |
2929 | || (mips_opts.mips16 | |
2930 | && (((prev_pinfo & MIPS16_INSN_WRITE_X) | |
bf12938e RS |
2931 | && (insn_uses_reg |
2932 | (ip, MIPS16_EXTRACT_OPERAND (RX, history[0]), | |
2933 | MIPS16_REG))) | |
252b5132 | 2934 | || ((prev_pinfo & MIPS16_INSN_WRITE_Y) |
bf12938e RS |
2935 | && (insn_uses_reg |
2936 | (ip, MIPS16_EXTRACT_OPERAND (RY, history[0]), | |
2937 | MIPS16_REG))) | |
252b5132 | 2938 | || ((prev_pinfo & MIPS16_INSN_WRITE_Z) |
bf12938e RS |
2939 | && (insn_uses_reg |
2940 | (ip, MIPS16_EXTRACT_OPERAND (RZ, history[0]), | |
2941 | MIPS16_REG))) | |
252b5132 RH |
2942 | || ((prev_pinfo & MIPS16_INSN_WRITE_T) |
2943 | && insn_uses_reg (ip, TREG, MIPS_GR_REG)) | |
2944 | || ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
2945 | && insn_uses_reg (ip, RA, MIPS_GR_REG)) | |
2946 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2947 | && insn_uses_reg (ip, | |
47e39b9d RS |
2948 | MIPS16OP_EXTRACT_REG32R |
2949 | (history[0].insn_opcode), | |
252b5132 RH |
2950 | MIPS_GR_REG)))) |
2951 | /* If the branch writes a register that the previous | |
2952 | instruction sets, we can not swap (we know that | |
2953 | branches write only to RD or to $31). */ | |
2954 | || (! mips_opts.mips16 | |
2955 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
2956 | && (((pinfo & INSN_WRITE_GPR_D) | |
bf12938e RS |
2957 | && (EXTRACT_OPERAND (RT, history[0]) |
2958 | == EXTRACT_OPERAND (RD, *ip))) | |
252b5132 | 2959 | || ((pinfo & INSN_WRITE_GPR_31) |
bf12938e | 2960 | && EXTRACT_OPERAND (RT, history[0]) == RA))) |
252b5132 RH |
2961 | || (! mips_opts.mips16 |
2962 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
2963 | && (((pinfo & INSN_WRITE_GPR_D) | |
bf12938e RS |
2964 | && (EXTRACT_OPERAND (RD, history[0]) |
2965 | == EXTRACT_OPERAND (RD, *ip))) | |
252b5132 | 2966 | || ((pinfo & INSN_WRITE_GPR_31) |
bf12938e | 2967 | && EXTRACT_OPERAND (RD, history[0]) == RA))) |
252b5132 RH |
2968 | || (mips_opts.mips16 |
2969 | && (pinfo & MIPS16_INSN_WRITE_31) | |
2970 | && ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
2971 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
47e39b9d | 2972 | && (MIPS16OP_EXTRACT_REG32R (history[0].insn_opcode) |
252b5132 RH |
2973 | == RA)))) |
2974 | /* If the branch writes a register that the previous | |
2975 | instruction reads, we can not swap (we know that | |
2976 | branches only write to RD or to $31). */ | |
2977 | || (! mips_opts.mips16 | |
2978 | && (pinfo & INSN_WRITE_GPR_D) | |
47e39b9d | 2979 | && insn_uses_reg (&history[0], |
bf12938e | 2980 | EXTRACT_OPERAND (RD, *ip), |
252b5132 RH |
2981 | MIPS_GR_REG)) |
2982 | || (! mips_opts.mips16 | |
2983 | && (pinfo & INSN_WRITE_GPR_31) | |
47e39b9d | 2984 | && insn_uses_reg (&history[0], RA, MIPS_GR_REG)) |
252b5132 RH |
2985 | || (mips_opts.mips16 |
2986 | && (pinfo & MIPS16_INSN_WRITE_31) | |
47e39b9d | 2987 | && insn_uses_reg (&history[0], RA, MIPS_GR_REG)) |
252b5132 RH |
2988 | /* If one instruction sets a condition code and the |
2989 | other one uses a condition code, we can not swap. */ | |
2990 | || ((pinfo & INSN_READ_COND_CODE) | |
2991 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
2992 | || ((pinfo & INSN_WRITE_COND_CODE) | |
2993 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
2994 | /* If the previous instruction uses the PC, we can not | |
2995 | swap. */ | |
2996 | || (mips_opts.mips16 | |
2997 | && (prev_pinfo & MIPS16_INSN_READ_PC)) | |
252b5132 RH |
2998 | /* If the previous instruction had a fixup in mips16 |
2999 | mode, we can not swap. This normally means that the | |
3000 | previous instruction was a 4 byte branch anyhow. */ | |
47e39b9d | 3001 | || (mips_opts.mips16 && history[0].fixp[0]) |
bdaaa2e1 KH |
3002 | /* If the previous instruction is a sync, sync.l, or |
3003 | sync.p, we can not swap. */ | |
f173e82e | 3004 | || (prev_pinfo & INSN_SYNC)) |
252b5132 | 3005 | { |
29024861 DU |
3006 | if (mips_opts.mips16 |
3007 | && (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
3008 | && (pinfo & (MIPS16_INSN_READ_X | MIPS16_INSN_READ_31)) | |
3994f87e | 3009 | && ISA_SUPPORTS_MIPS16E) |
29024861 DU |
3010 | { |
3011 | /* Convert MIPS16 jr/jalr into a "compact" jump. */ | |
3012 | ip->insn_opcode |= 0x0080; | |
3013 | install_insn (ip); | |
3014 | insert_into_history (0, 1, ip); | |
3015 | } | |
3016 | else | |
3017 | { | |
3018 | /* We could do even better for unconditional branches to | |
3019 | portions of this object file; we could pick up the | |
3020 | instruction at the destination, put it in the delay | |
3021 | slot, and bump the destination address. */ | |
3022 | insert_into_history (0, 1, ip); | |
3023 | emit_nop (); | |
3024 | } | |
3025 | ||
dd22970f ILT |
3026 | if (mips_relax.sequence) |
3027 | mips_relax.sizes[mips_relax.sequence - 1] += 4; | |
252b5132 RH |
3028 | } |
3029 | else | |
3030 | { | |
3031 | /* It looks like we can actually do the swap. */ | |
1e915849 RS |
3032 | struct mips_cl_insn delay = history[0]; |
3033 | if (mips_opts.mips16) | |
252b5132 | 3034 | { |
b8ee1a6e DU |
3035 | know (delay.frag == ip->frag); |
3036 | move_insn (ip, delay.frag, delay.where); | |
3037 | move_insn (&delay, ip->frag, ip->where + insn_length (ip)); | |
1e915849 RS |
3038 | } |
3039 | else if (relaxed_branch) | |
3040 | { | |
3041 | /* Add the delay slot instruction to the end of the | |
3042 | current frag and shrink the fixed part of the | |
3043 | original frag. If the branch occupies the tail of | |
3044 | the latter, move it backwards to cover the gap. */ | |
3045 | delay.frag->fr_fix -= 4; | |
3046 | if (delay.frag == ip->frag) | |
3047 | move_insn (ip, ip->frag, ip->where - 4); | |
3048 | add_fixed_insn (&delay); | |
252b5132 RH |
3049 | } |
3050 | else | |
3051 | { | |
1e915849 RS |
3052 | move_insn (&delay, ip->frag, ip->where); |
3053 | move_insn (ip, history[0].frag, history[0].where); | |
252b5132 | 3054 | } |
1e915849 RS |
3055 | history[0] = *ip; |
3056 | delay.fixed_p = 1; | |
3057 | insert_into_history (0, 1, &delay); | |
252b5132 | 3058 | } |
252b5132 RH |
3059 | |
3060 | /* If that was an unconditional branch, forget the previous | |
3061 | insn information. */ | |
3062 | if (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
7d10b47d | 3063 | mips_no_prev_insn (); |
252b5132 RH |
3064 | } |
3065 | else if (pinfo & INSN_COND_BRANCH_LIKELY) | |
3066 | { | |
3067 | /* We don't yet optimize a branch likely. What we should do | |
3068 | is look at the target, copy the instruction found there | |
3069 | into the delay slot, and increment the branch to jump to | |
3070 | the next instruction. */ | |
1e915849 | 3071 | insert_into_history (0, 1, ip); |
252b5132 | 3072 | emit_nop (); |
252b5132 RH |
3073 | } |
3074 | else | |
1e915849 | 3075 | insert_into_history (0, 1, ip); |
252b5132 | 3076 | } |
1e915849 RS |
3077 | else |
3078 | insert_into_history (0, 1, ip); | |
252b5132 RH |
3079 | |
3080 | /* We just output an insn, so the next one doesn't have a label. */ | |
3081 | mips_clear_insn_labels (); | |
252b5132 RH |
3082 | } |
3083 | ||
7d10b47d | 3084 | /* Forget that there was any previous instruction or label. */ |
252b5132 RH |
3085 | |
3086 | static void | |
7d10b47d | 3087 | mips_no_prev_insn (void) |
252b5132 | 3088 | { |
7d10b47d RS |
3089 | prev_nop_frag = NULL; |
3090 | insert_into_history (0, ARRAY_SIZE (history), NOP_INSN); | |
252b5132 RH |
3091 | mips_clear_insn_labels (); |
3092 | } | |
3093 | ||
7d10b47d RS |
3094 | /* This function must be called before we emit something other than |
3095 | instructions. It is like mips_no_prev_insn except that it inserts | |
3096 | any NOPS that might be needed by previous instructions. */ | |
252b5132 | 3097 | |
7d10b47d RS |
3098 | void |
3099 | mips_emit_delays (void) | |
252b5132 RH |
3100 | { |
3101 | if (! mips_opts.noreorder) | |
3102 | { | |
71400594 | 3103 | int nops = nops_for_insn (history, NULL); |
252b5132 RH |
3104 | if (nops > 0) |
3105 | { | |
7d10b47d RS |
3106 | while (nops-- > 0) |
3107 | add_fixed_insn (NOP_INSN); | |
3108 | mips_move_labels (); | |
3109 | } | |
3110 | } | |
3111 | mips_no_prev_insn (); | |
3112 | } | |
3113 | ||
3114 | /* Start a (possibly nested) noreorder block. */ | |
3115 | ||
3116 | static void | |
3117 | start_noreorder (void) | |
3118 | { | |
3119 | if (mips_opts.noreorder == 0) | |
3120 | { | |
3121 | unsigned int i; | |
3122 | int nops; | |
3123 | ||
3124 | /* None of the instructions before the .set noreorder can be moved. */ | |
3125 | for (i = 0; i < ARRAY_SIZE (history); i++) | |
3126 | history[i].fixed_p = 1; | |
3127 | ||
3128 | /* Insert any nops that might be needed between the .set noreorder | |
3129 | block and the previous instructions. We will later remove any | |
3130 | nops that turn out not to be needed. */ | |
3131 | nops = nops_for_insn (history, NULL); | |
3132 | if (nops > 0) | |
3133 | { | |
3134 | if (mips_optimize != 0) | |
252b5132 RH |
3135 | { |
3136 | /* Record the frag which holds the nop instructions, so | |
3137 | that we can remove them if we don't need them. */ | |
3138 | frag_grow (mips_opts.mips16 ? nops * 2 : nops * 4); | |
3139 | prev_nop_frag = frag_now; | |
3140 | prev_nop_frag_holds = nops; | |
3141 | prev_nop_frag_required = 0; | |
3142 | prev_nop_frag_since = 0; | |
3143 | } | |
3144 | ||
3145 | for (; nops > 0; --nops) | |
1e915849 | 3146 | add_fixed_insn (NOP_INSN); |
252b5132 | 3147 | |
7d10b47d RS |
3148 | /* Move on to a new frag, so that it is safe to simply |
3149 | decrease the size of prev_nop_frag. */ | |
3150 | frag_wane (frag_now); | |
3151 | frag_new (0); | |
404a8071 | 3152 | mips_move_labels (); |
252b5132 | 3153 | } |
7d10b47d RS |
3154 | mips16_mark_labels (); |
3155 | mips_clear_insn_labels (); | |
252b5132 | 3156 | } |
7d10b47d RS |
3157 | mips_opts.noreorder++; |
3158 | mips_any_noreorder = 1; | |
3159 | } | |
252b5132 | 3160 | |
7d10b47d | 3161 | /* End a nested noreorder block. */ |
252b5132 | 3162 | |
7d10b47d RS |
3163 | static void |
3164 | end_noreorder (void) | |
3165 | { | |
3166 | mips_opts.noreorder--; | |
3167 | if (mips_opts.noreorder == 0 && prev_nop_frag != NULL) | |
3168 | { | |
3169 | /* Commit to inserting prev_nop_frag_required nops and go back to | |
3170 | handling nop insertion the .set reorder way. */ | |
3171 | prev_nop_frag->fr_fix -= ((prev_nop_frag_holds - prev_nop_frag_required) | |
3172 | * (mips_opts.mips16 ? 2 : 4)); | |
3173 | insert_into_history (prev_nop_frag_since, | |
3174 | prev_nop_frag_required, NOP_INSN); | |
3175 | prev_nop_frag = NULL; | |
3176 | } | |
252b5132 RH |
3177 | } |
3178 | ||
584892a6 RS |
3179 | /* Set up global variables for the start of a new macro. */ |
3180 | ||
3181 | static void | |
3182 | macro_start (void) | |
3183 | { | |
3184 | memset (&mips_macro_warning.sizes, 0, sizeof (mips_macro_warning.sizes)); | |
3185 | mips_macro_warning.delay_slot_p = (mips_opts.noreorder | |
47e39b9d | 3186 | && (history[0].insn_mo->pinfo |
584892a6 RS |
3187 | & (INSN_UNCOND_BRANCH_DELAY |
3188 | | INSN_COND_BRANCH_DELAY | |
3189 | | INSN_COND_BRANCH_LIKELY)) != 0); | |
3190 | } | |
3191 | ||
3192 | /* Given that a macro is longer than 4 bytes, return the appropriate warning | |
3193 | for it. Return null if no warning is needed. SUBTYPE is a bitmask of | |
3194 | RELAX_DELAY_SLOT and RELAX_NOMACRO. */ | |
3195 | ||
3196 | static const char * | |
3197 | macro_warning (relax_substateT subtype) | |
3198 | { | |
3199 | if (subtype & RELAX_DELAY_SLOT) | |
3200 | return _("Macro instruction expanded into multiple instructions" | |
3201 | " in a branch delay slot"); | |
3202 | else if (subtype & RELAX_NOMACRO) | |
3203 | return _("Macro instruction expanded into multiple instructions"); | |
3204 | else | |
3205 | return 0; | |
3206 | } | |
3207 | ||
3208 | /* Finish up a macro. Emit warnings as appropriate. */ | |
3209 | ||
3210 | static void | |
3211 | macro_end (void) | |
3212 | { | |
3213 | if (mips_macro_warning.sizes[0] > 4 || mips_macro_warning.sizes[1] > 4) | |
3214 | { | |
3215 | relax_substateT subtype; | |
3216 | ||
3217 | /* Set up the relaxation warning flags. */ | |
3218 | subtype = 0; | |
3219 | if (mips_macro_warning.sizes[1] > mips_macro_warning.sizes[0]) | |
3220 | subtype |= RELAX_SECOND_LONGER; | |
3221 | if (mips_opts.warn_about_macros) | |
3222 | subtype |= RELAX_NOMACRO; | |
3223 | if (mips_macro_warning.delay_slot_p) | |
3224 | subtype |= RELAX_DELAY_SLOT; | |
3225 | ||
3226 | if (mips_macro_warning.sizes[0] > 4 && mips_macro_warning.sizes[1] > 4) | |
3227 | { | |
3228 | /* Either the macro has a single implementation or both | |
3229 | implementations are longer than 4 bytes. Emit the | |
3230 | warning now. */ | |
3231 | const char *msg = macro_warning (subtype); | |
3232 | if (msg != 0) | |
3233 | as_warn (msg); | |
3234 | } | |
3235 | else | |
3236 | { | |
3237 | /* One implementation might need a warning but the other | |
3238 | definitely doesn't. */ | |
3239 | mips_macro_warning.first_frag->fr_subtype |= subtype; | |
3240 | } | |
3241 | } | |
3242 | } | |
3243 | ||
6e1304d8 RS |
3244 | /* Read a macro's relocation codes from *ARGS and store them in *R. |
3245 | The first argument in *ARGS will be either the code for a single | |
3246 | relocation or -1 followed by the three codes that make up a | |
3247 | composite relocation. */ | |
3248 | ||
3249 | static void | |
3250 | macro_read_relocs (va_list *args, bfd_reloc_code_real_type *r) | |
3251 | { | |
3252 | int i, next; | |
3253 | ||
3254 | next = va_arg (*args, int); | |
3255 | if (next >= 0) | |
3256 | r[0] = (bfd_reloc_code_real_type) next; | |
3257 | else | |
3258 | for (i = 0; i < 3; i++) | |
3259 | r[i] = (bfd_reloc_code_real_type) va_arg (*args, int); | |
3260 | } | |
3261 | ||
252b5132 RH |
3262 | /* Build an instruction created by a macro expansion. This is passed |
3263 | a pointer to the count of instructions created so far, an | |
3264 | expression, the name of the instruction to build, an operand format | |
3265 | string, and corresponding arguments. */ | |
3266 | ||
252b5132 | 3267 | static void |
67c0d1eb | 3268 | macro_build (expressionS *ep, const char *name, const char *fmt, ...) |
252b5132 | 3269 | { |
1e915849 | 3270 | const struct mips_opcode *mo; |
252b5132 | 3271 | struct mips_cl_insn insn; |
f6688943 | 3272 | bfd_reloc_code_real_type r[3]; |
252b5132 | 3273 | va_list args; |
252b5132 | 3274 | |
252b5132 | 3275 | va_start (args, fmt); |
252b5132 | 3276 | |
252b5132 RH |
3277 | if (mips_opts.mips16) |
3278 | { | |
67c0d1eb | 3279 | mips16_macro_build (ep, name, fmt, args); |
252b5132 RH |
3280 | va_end (args); |
3281 | return; | |
3282 | } | |
3283 | ||
f6688943 TS |
3284 | r[0] = BFD_RELOC_UNUSED; |
3285 | r[1] = BFD_RELOC_UNUSED; | |
3286 | r[2] = BFD_RELOC_UNUSED; | |
1e915849 RS |
3287 | mo = (struct mips_opcode *) hash_find (op_hash, name); |
3288 | assert (mo); | |
3289 | assert (strcmp (name, mo->name) == 0); | |
3290 | ||
3291 | /* Search until we get a match for NAME. It is assumed here that | |
65263ce3 | 3292 | macros will never generate MDMX, MIPS-3D, DSP or MT instructions. */ |
1e915849 RS |
3293 | while (strcmp (fmt, mo->args) != 0 |
3294 | || mo->pinfo == INSN_MACRO | |
3295 | || !OPCODE_IS_MEMBER (mo, | |
3296 | (mips_opts.isa | |
9b3f89ee | 3297 | | (mips_opts.mips16 ? INSN_MIPS16 : 0) |
e16bfa71 | 3298 | | (mips_opts.ase_smartmips ? INSN_SMARTMIPS : 0)), |
fef14a42 | 3299 | mips_opts.arch) |
1e915849 RS |
3300 | || (mips_opts.arch == CPU_R4650 && (mo->pinfo & FP_D) != 0)) |
3301 | { | |
3302 | ++mo; | |
3303 | assert (mo->name); | |
3304 | assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
3305 | } |
3306 | ||
1e915849 | 3307 | create_insn (&insn, mo); |
252b5132 RH |
3308 | for (;;) |
3309 | { | |
3310 | switch (*fmt++) | |
3311 | { | |
3312 | case '\0': | |
3313 | break; | |
3314 | ||
3315 | case ',': | |
3316 | case '(': | |
3317 | case ')': | |
3318 | continue; | |
3319 | ||
5f74bc13 CD |
3320 | case '+': |
3321 | switch (*fmt++) | |
3322 | { | |
3323 | case 'A': | |
3324 | case 'E': | |
bf12938e | 3325 | INSERT_OPERAND (SHAMT, insn, va_arg (args, int)); |
5f74bc13 CD |
3326 | continue; |
3327 | ||
3328 | case 'B': | |
3329 | case 'F': | |
3330 | /* Note that in the macro case, these arguments are already | |
3331 | in MSB form. (When handling the instruction in the | |
3332 | non-macro case, these arguments are sizes from which | |
3333 | MSB values must be calculated.) */ | |
bf12938e | 3334 | INSERT_OPERAND (INSMSB, insn, va_arg (args, int)); |
5f74bc13 CD |
3335 | continue; |
3336 | ||
3337 | case 'C': | |
3338 | case 'G': | |
3339 | case 'H': | |
3340 | /* Note that in the macro case, these arguments are already | |
3341 | in MSBD form. (When handling the instruction in the | |
3342 | non-macro case, these arguments are sizes from which | |
3343 | MSBD values must be calculated.) */ | |
bf12938e | 3344 | INSERT_OPERAND (EXTMSBD, insn, va_arg (args, int)); |
5f74bc13 CD |
3345 | continue; |
3346 | ||
3347 | default: | |
3348 | internalError (); | |
3349 | } | |
3350 | continue; | |
3351 | ||
252b5132 RH |
3352 | case 't': |
3353 | case 'w': | |
3354 | case 'E': | |
bf12938e | 3355 | INSERT_OPERAND (RT, insn, va_arg (args, int)); |
252b5132 RH |
3356 | continue; |
3357 | ||
3358 | case 'c': | |
bf12938e | 3359 | INSERT_OPERAND (CODE, insn, va_arg (args, int)); |
38487616 TS |
3360 | continue; |
3361 | ||
252b5132 RH |
3362 | case 'T': |
3363 | case 'W': | |
bf12938e | 3364 | INSERT_OPERAND (FT, insn, va_arg (args, int)); |
252b5132 RH |
3365 | continue; |
3366 | ||
3367 | case 'd': | |
3368 | case 'G': | |
af7ee8bf | 3369 | case 'K': |
bf12938e | 3370 | INSERT_OPERAND (RD, insn, va_arg (args, int)); |
252b5132 RH |
3371 | continue; |
3372 | ||
4372b673 NC |
3373 | case 'U': |
3374 | { | |
3375 | int tmp = va_arg (args, int); | |
3376 | ||
bf12938e RS |
3377 | INSERT_OPERAND (RT, insn, tmp); |
3378 | INSERT_OPERAND (RD, insn, tmp); | |
beae10d5 | 3379 | continue; |
4372b673 NC |
3380 | } |
3381 | ||
252b5132 RH |
3382 | case 'V': |
3383 | case 'S': | |
bf12938e | 3384 | INSERT_OPERAND (FS, insn, va_arg (args, int)); |
252b5132 RH |
3385 | continue; |
3386 | ||
3387 | case 'z': | |
3388 | continue; | |
3389 | ||
3390 | case '<': | |
bf12938e | 3391 | INSERT_OPERAND (SHAMT, insn, va_arg (args, int)); |
252b5132 RH |
3392 | continue; |
3393 | ||
3394 | case 'D': | |
bf12938e | 3395 | INSERT_OPERAND (FD, insn, va_arg (args, int)); |
252b5132 RH |
3396 | continue; |
3397 | ||
3398 | case 'B': | |
bf12938e | 3399 | INSERT_OPERAND (CODE20, insn, va_arg (args, int)); |
252b5132 RH |
3400 | continue; |
3401 | ||
4372b673 | 3402 | case 'J': |
bf12938e | 3403 | INSERT_OPERAND (CODE19, insn, va_arg (args, int)); |
4372b673 NC |
3404 | continue; |
3405 | ||
252b5132 | 3406 | case 'q': |
bf12938e | 3407 | INSERT_OPERAND (CODE2, insn, va_arg (args, int)); |
252b5132 RH |
3408 | continue; |
3409 | ||
3410 | case 'b': | |
3411 | case 's': | |
3412 | case 'r': | |
3413 | case 'v': | |
bf12938e | 3414 | INSERT_OPERAND (RS, insn, va_arg (args, int)); |
252b5132 RH |
3415 | continue; |
3416 | ||
3417 | case 'i': | |
3418 | case 'j': | |
3419 | case 'o': | |
6e1304d8 | 3420 | macro_read_relocs (&args, r); |
cdf6fd85 | 3421 | assert (*r == BFD_RELOC_GPREL16 |
f6688943 TS |
3422 | || *r == BFD_RELOC_MIPS_LITERAL |
3423 | || *r == BFD_RELOC_MIPS_HIGHER | |
3424 | || *r == BFD_RELOC_HI16_S | |
3425 | || *r == BFD_RELOC_LO16 | |
3426 | || *r == BFD_RELOC_MIPS_GOT16 | |
3427 | || *r == BFD_RELOC_MIPS_CALL16 | |
438c16b8 TS |
3428 | || *r == BFD_RELOC_MIPS_GOT_DISP |
3429 | || *r == BFD_RELOC_MIPS_GOT_PAGE | |
3430 | || *r == BFD_RELOC_MIPS_GOT_OFST | |
f6688943 | 3431 | || *r == BFD_RELOC_MIPS_GOT_LO16 |
3e722fb5 | 3432 | || *r == BFD_RELOC_MIPS_CALL_LO16); |
252b5132 RH |
3433 | continue; |
3434 | ||
3435 | case 'u': | |
6e1304d8 | 3436 | macro_read_relocs (&args, r); |
252b5132 RH |
3437 | assert (ep != NULL |
3438 | && (ep->X_op == O_constant | |
3439 | || (ep->X_op == O_symbol | |
f6688943 TS |
3440 | && (*r == BFD_RELOC_MIPS_HIGHEST |
3441 | || *r == BFD_RELOC_HI16_S | |
3442 | || *r == BFD_RELOC_HI16 | |
3443 | || *r == BFD_RELOC_GPREL16 | |
3444 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
3e722fb5 | 3445 | || *r == BFD_RELOC_MIPS_CALL_HI16)))); |
252b5132 RH |
3446 | continue; |
3447 | ||
3448 | case 'p': | |
3449 | assert (ep != NULL); | |
bad36eac | 3450 | |
252b5132 RH |
3451 | /* |
3452 | * This allows macro() to pass an immediate expression for | |
3453 | * creating short branches without creating a symbol. | |
bad36eac DJ |
3454 | * |
3455 | * We don't allow branch relaxation for these branches, as | |
3456 | * they should only appear in ".set nomacro" anyway. | |
252b5132 RH |
3457 | */ |
3458 | if (ep->X_op == O_constant) | |
3459 | { | |
bad36eac DJ |
3460 | if ((ep->X_add_number & 3) != 0) |
3461 | as_bad (_("branch to misaligned address (0x%lx)"), | |
3462 | (unsigned long) ep->X_add_number); | |
3463 | if ((ep->X_add_number + 0x20000) & ~0x3ffff) | |
3464 | as_bad (_("branch address range overflow (0x%lx)"), | |
3465 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
3466 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; |
3467 | ep = NULL; | |
3468 | } | |
3469 | else | |
0b25d3e6 | 3470 | *r = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
3471 | continue; |
3472 | ||
3473 | case 'a': | |
3474 | assert (ep != NULL); | |
f6688943 | 3475 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
3476 | continue; |
3477 | ||
3478 | case 'C': | |
a9e24354 | 3479 | INSERT_OPERAND (COPZ, insn, va_arg (args, unsigned long)); |
252b5132 RH |
3480 | continue; |
3481 | ||
d43b4baf | 3482 | case 'k': |
a9e24354 | 3483 | INSERT_OPERAND (CACHE, insn, va_arg (args, unsigned long)); |
d43b4baf TS |
3484 | continue; |
3485 | ||
252b5132 RH |
3486 | default: |
3487 | internalError (); | |
3488 | } | |
3489 | break; | |
3490 | } | |
3491 | va_end (args); | |
f6688943 | 3492 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3493 | |
4d7206a2 | 3494 | append_insn (&insn, ep, r); |
252b5132 RH |
3495 | } |
3496 | ||
3497 | static void | |
67c0d1eb | 3498 | mips16_macro_build (expressionS *ep, const char *name, const char *fmt, |
17a2f251 | 3499 | va_list args) |
252b5132 | 3500 | { |
1e915849 | 3501 | struct mips_opcode *mo; |
252b5132 | 3502 | struct mips_cl_insn insn; |
f6688943 TS |
3503 | bfd_reloc_code_real_type r[3] |
3504 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 3505 | |
1e915849 RS |
3506 | mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
3507 | assert (mo); | |
3508 | assert (strcmp (name, mo->name) == 0); | |
252b5132 | 3509 | |
1e915849 | 3510 | while (strcmp (fmt, mo->args) != 0 || mo->pinfo == INSN_MACRO) |
252b5132 | 3511 | { |
1e915849 RS |
3512 | ++mo; |
3513 | assert (mo->name); | |
3514 | assert (strcmp (name, mo->name) == 0); | |
252b5132 RH |
3515 | } |
3516 | ||
1e915849 | 3517 | create_insn (&insn, mo); |
252b5132 RH |
3518 | for (;;) |
3519 | { | |
3520 | int c; | |
3521 | ||
3522 | c = *fmt++; | |
3523 | switch (c) | |
3524 | { | |
3525 | case '\0': | |
3526 | break; | |
3527 | ||
3528 | case ',': | |
3529 | case '(': | |
3530 | case ')': | |
3531 | continue; | |
3532 | ||
3533 | case 'y': | |
3534 | case 'w': | |
bf12938e | 3535 | MIPS16_INSERT_OPERAND (RY, insn, va_arg (args, int)); |
252b5132 RH |
3536 | continue; |
3537 | ||
3538 | case 'x': | |
3539 | case 'v': | |
bf12938e | 3540 | MIPS16_INSERT_OPERAND (RX, insn, va_arg (args, int)); |
252b5132 RH |
3541 | continue; |
3542 | ||
3543 | case 'z': | |
bf12938e | 3544 | MIPS16_INSERT_OPERAND (RZ, insn, va_arg (args, int)); |
252b5132 RH |
3545 | continue; |
3546 | ||
3547 | case 'Z': | |
bf12938e | 3548 | MIPS16_INSERT_OPERAND (MOVE32Z, insn, va_arg (args, int)); |
252b5132 RH |
3549 | continue; |
3550 | ||
3551 | case '0': | |
3552 | case 'S': | |
3553 | case 'P': | |
3554 | case 'R': | |
3555 | continue; | |
3556 | ||
3557 | case 'X': | |
bf12938e | 3558 | MIPS16_INSERT_OPERAND (REGR32, insn, va_arg (args, int)); |
252b5132 RH |
3559 | continue; |
3560 | ||
3561 | case 'Y': | |
3562 | { | |
3563 | int regno; | |
3564 | ||
3565 | regno = va_arg (args, int); | |
3566 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
a9e24354 | 3567 | MIPS16_INSERT_OPERAND (REG32R, insn, regno); |
252b5132 RH |
3568 | } |
3569 | continue; | |
3570 | ||
3571 | case '<': | |
3572 | case '>': | |
3573 | case '4': | |
3574 | case '5': | |
3575 | case 'H': | |
3576 | case 'W': | |
3577 | case 'D': | |
3578 | case 'j': | |
3579 | case '8': | |
3580 | case 'V': | |
3581 | case 'C': | |
3582 | case 'U': | |
3583 | case 'k': | |
3584 | case 'K': | |
3585 | case 'p': | |
3586 | case 'q': | |
3587 | { | |
3588 | assert (ep != NULL); | |
3589 | ||
3590 | if (ep->X_op != O_constant) | |
874e8986 | 3591 | *r = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
3592 | else |
3593 | { | |
b34976b6 AM |
3594 | mips16_immed (NULL, 0, c, ep->X_add_number, FALSE, FALSE, |
3595 | FALSE, &insn.insn_opcode, &insn.use_extend, | |
c4e7957c | 3596 | &insn.extend); |
252b5132 | 3597 | ep = NULL; |
f6688943 | 3598 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
3599 | } |
3600 | } | |
3601 | continue; | |
3602 | ||
3603 | case '6': | |
bf12938e | 3604 | MIPS16_INSERT_OPERAND (IMM6, insn, va_arg (args, int)); |
252b5132 RH |
3605 | continue; |
3606 | } | |
3607 | ||
3608 | break; | |
3609 | } | |
3610 | ||
f6688943 | 3611 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3612 | |
4d7206a2 | 3613 | append_insn (&insn, ep, r); |
252b5132 RH |
3614 | } |
3615 | ||
2051e8c4 MR |
3616 | /* |
3617 | * Sign-extend 32-bit mode constants that have bit 31 set and all | |
3618 | * higher bits unset. | |
3619 | */ | |
9f872bbe | 3620 | static void |
2051e8c4 MR |
3621 | normalize_constant_expr (expressionS *ex) |
3622 | { | |
9ee2a2d4 | 3623 | if (ex->X_op == O_constant |
2051e8c4 MR |
3624 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) |
3625 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
3626 | - 0x80000000); | |
3627 | } | |
3628 | ||
3629 | /* | |
3630 | * Sign-extend 32-bit mode address offsets that have bit 31 set and | |
3631 | * all higher bits unset. | |
3632 | */ | |
3633 | static void | |
3634 | normalize_address_expr (expressionS *ex) | |
3635 | { | |
3636 | if (((ex->X_op == O_constant && HAVE_32BIT_ADDRESSES) | |
3637 | || (ex->X_op == O_symbol && HAVE_32BIT_SYMBOLS)) | |
3638 | && IS_ZEXT_32BIT_NUM (ex->X_add_number)) | |
3639 | ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000) | |
3640 | - 0x80000000); | |
3641 | } | |
3642 | ||
438c16b8 TS |
3643 | /* |
3644 | * Generate a "jalr" instruction with a relocation hint to the called | |
3645 | * function. This occurs in NewABI PIC code. | |
3646 | */ | |
3647 | static void | |
67c0d1eb | 3648 | macro_build_jalr (expressionS *ep) |
438c16b8 | 3649 | { |
685736be | 3650 | char *f = NULL; |
b34976b6 | 3651 | |
438c16b8 | 3652 | if (HAVE_NEWABI) |
f21f8242 | 3653 | { |
cc3d92a5 | 3654 | frag_grow (8); |
f21f8242 AO |
3655 | f = frag_more (0); |
3656 | } | |
67c0d1eb | 3657 | macro_build (NULL, "jalr", "d,s", RA, PIC_CALL_REG); |
438c16b8 | 3658 | if (HAVE_NEWABI) |
f21f8242 | 3659 | fix_new_exp (frag_now, f - frag_now->fr_literal, |
a105a300 | 3660 | 4, ep, FALSE, BFD_RELOC_MIPS_JALR); |
438c16b8 TS |
3661 | } |
3662 | ||
252b5132 RH |
3663 | /* |
3664 | * Generate a "lui" instruction. | |
3665 | */ | |
3666 | static void | |
67c0d1eb | 3667 | macro_build_lui (expressionS *ep, int regnum) |
252b5132 RH |
3668 | { |
3669 | expressionS high_expr; | |
1e915849 | 3670 | const struct mips_opcode *mo; |
252b5132 | 3671 | struct mips_cl_insn insn; |
f6688943 TS |
3672 | bfd_reloc_code_real_type r[3] |
3673 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
5a38dc70 AM |
3674 | const char *name = "lui"; |
3675 | const char *fmt = "t,u"; | |
252b5132 RH |
3676 | |
3677 | assert (! mips_opts.mips16); | |
3678 | ||
4d7206a2 | 3679 | high_expr = *ep; |
252b5132 RH |
3680 | |
3681 | if (high_expr.X_op == O_constant) | |
3682 | { | |
3683 | /* we can compute the instruction now without a relocation entry */ | |
e7d556df TS |
3684 | high_expr.X_add_number = ((high_expr.X_add_number + 0x8000) |
3685 | >> 16) & 0xffff; | |
f6688943 | 3686 | *r = BFD_RELOC_UNUSED; |
252b5132 | 3687 | } |
78e1bb40 | 3688 | else |
252b5132 RH |
3689 | { |
3690 | assert (ep->X_op == O_symbol); | |
bbe506e8 TS |
3691 | /* _gp_disp is a special case, used from s_cpload. |
3692 | __gnu_local_gp is used if mips_no_shared. */ | |
252b5132 | 3693 | assert (mips_pic == NO_PIC |
78e1bb40 | 3694 | || (! HAVE_NEWABI |
aa6975fb ILT |
3695 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0) |
3696 | || (! mips_in_shared | |
bbe506e8 TS |
3697 | && strcmp (S_GET_NAME (ep->X_add_symbol), |
3698 | "__gnu_local_gp") == 0)); | |
f6688943 | 3699 | *r = BFD_RELOC_HI16_S; |
252b5132 RH |
3700 | } |
3701 | ||
1e915849 RS |
3702 | mo = hash_find (op_hash, name); |
3703 | assert (strcmp (name, mo->name) == 0); | |
3704 | assert (strcmp (fmt, mo->args) == 0); | |
3705 | create_insn (&insn, mo); | |
252b5132 | 3706 | |
bf12938e RS |
3707 | insn.insn_opcode = insn.insn_mo->match; |
3708 | INSERT_OPERAND (RT, insn, regnum); | |
f6688943 | 3709 | if (*r == BFD_RELOC_UNUSED) |
252b5132 RH |
3710 | { |
3711 | insn.insn_opcode |= high_expr.X_add_number; | |
4d7206a2 | 3712 | append_insn (&insn, NULL, r); |
252b5132 RH |
3713 | } |
3714 | else | |
4d7206a2 | 3715 | append_insn (&insn, &high_expr, r); |
252b5132 RH |
3716 | } |
3717 | ||
885add95 CD |
3718 | /* Generate a sequence of instructions to do a load or store from a constant |
3719 | offset off of a base register (breg) into/from a target register (treg), | |
3720 | using AT if necessary. */ | |
3721 | static void | |
67c0d1eb RS |
3722 | macro_build_ldst_constoffset (expressionS *ep, const char *op, |
3723 | int treg, int breg, int dbl) | |
885add95 CD |
3724 | { |
3725 | assert (ep->X_op == O_constant); | |
3726 | ||
256ab948 | 3727 | /* Sign-extending 32-bit constants makes their handling easier. */ |
2051e8c4 MR |
3728 | if (!dbl) |
3729 | normalize_constant_expr (ep); | |
256ab948 | 3730 | |
67c1ffbe | 3731 | /* Right now, this routine can only handle signed 32-bit constants. */ |
ecd13cd3 | 3732 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number + 0x8000)) |
885add95 CD |
3733 | as_warn (_("operand overflow")); |
3734 | ||
3735 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
3736 | { | |
3737 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
67c0d1eb | 3738 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
885add95 CD |
3739 | } |
3740 | else | |
3741 | { | |
3742 | /* 32-bit offset, need multiple instructions and AT, like: | |
3743 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
3744 | addu $tempreg,$tempreg,$breg | |
3745 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
3746 | to handle the complete offset. */ | |
67c0d1eb RS |
3747 | macro_build_lui (ep, AT); |
3748 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); | |
3749 | macro_build (ep, op, "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
885add95 CD |
3750 | |
3751 | if (mips_opts.noat) | |
8fc2e39e | 3752 | as_bad (_("Macro used $at after \".set noat\"")); |
885add95 CD |
3753 | } |
3754 | } | |
3755 | ||
252b5132 RH |
3756 | /* set_at() |
3757 | * Generates code to set the $at register to true (one) | |
3758 | * if reg is less than the immediate expression. | |
3759 | */ | |
3760 | static void | |
67c0d1eb | 3761 | set_at (int reg, int unsignedp) |
252b5132 RH |
3762 | { |
3763 | if (imm_expr.X_op == O_constant | |
3764 | && imm_expr.X_add_number >= -0x8000 | |
3765 | && imm_expr.X_add_number < 0x8000) | |
67c0d1eb RS |
3766 | macro_build (&imm_expr, unsignedp ? "sltiu" : "slti", "t,r,j", |
3767 | AT, reg, BFD_RELOC_LO16); | |
252b5132 RH |
3768 | else |
3769 | { | |
67c0d1eb RS |
3770 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
3771 | macro_build (NULL, unsignedp ? "sltu" : "slt", "d,v,t", AT, reg, AT); | |
252b5132 RH |
3772 | } |
3773 | } | |
3774 | ||
3775 | /* Warn if an expression is not a constant. */ | |
3776 | ||
3777 | static void | |
17a2f251 | 3778 | check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex) |
252b5132 RH |
3779 | { |
3780 | if (ex->X_op == O_big) | |
3781 | as_bad (_("unsupported large constant")); | |
3782 | else if (ex->X_op != O_constant) | |
9ee2a2d4 MR |
3783 | as_bad (_("Instruction %s requires absolute expression"), |
3784 | ip->insn_mo->name); | |
13757d0c | 3785 | |
9ee2a2d4 MR |
3786 | if (HAVE_32BIT_GPRS) |
3787 | normalize_constant_expr (ex); | |
252b5132 RH |
3788 | } |
3789 | ||
3790 | /* Count the leading zeroes by performing a binary chop. This is a | |
3791 | bulky bit of source, but performance is a LOT better for the | |
3792 | majority of values than a simple loop to count the bits: | |
3793 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
3794 | if ((v) & (1 << (31 - lcnt))) | |
3795 | break; | |
3796 | However it is not code size friendly, and the gain will drop a bit | |
3797 | on certain cached systems. | |
3798 | */ | |
3799 | #define COUNT_TOP_ZEROES(v) \ | |
3800 | (((v) & ~0xffff) == 0 \ | |
3801 | ? ((v) & ~0xff) == 0 \ | |
3802 | ? ((v) & ~0xf) == 0 \ | |
3803 | ? ((v) & ~0x3) == 0 \ | |
3804 | ? ((v) & ~0x1) == 0 \ | |
3805 | ? !(v) \ | |
3806 | ? 32 \ | |
3807 | : 31 \ | |
3808 | : 30 \ | |
3809 | : ((v) & ~0x7) == 0 \ | |
3810 | ? 29 \ | |
3811 | : 28 \ | |
3812 | : ((v) & ~0x3f) == 0 \ | |
3813 | ? ((v) & ~0x1f) == 0 \ | |
3814 | ? 27 \ | |
3815 | : 26 \ | |
3816 | : ((v) & ~0x7f) == 0 \ | |
3817 | ? 25 \ | |
3818 | : 24 \ | |
3819 | : ((v) & ~0xfff) == 0 \ | |
3820 | ? ((v) & ~0x3ff) == 0 \ | |
3821 | ? ((v) & ~0x1ff) == 0 \ | |
3822 | ? 23 \ | |
3823 | : 22 \ | |
3824 | : ((v) & ~0x7ff) == 0 \ | |
3825 | ? 21 \ | |
3826 | : 20 \ | |
3827 | : ((v) & ~0x3fff) == 0 \ | |
3828 | ? ((v) & ~0x1fff) == 0 \ | |
3829 | ? 19 \ | |
3830 | : 18 \ | |
3831 | : ((v) & ~0x7fff) == 0 \ | |
3832 | ? 17 \ | |
3833 | : 16 \ | |
3834 | : ((v) & ~0xffffff) == 0 \ | |
3835 | ? ((v) & ~0xfffff) == 0 \ | |
3836 | ? ((v) & ~0x3ffff) == 0 \ | |
3837 | ? ((v) & ~0x1ffff) == 0 \ | |
3838 | ? 15 \ | |
3839 | : 14 \ | |
3840 | : ((v) & ~0x7ffff) == 0 \ | |
3841 | ? 13 \ | |
3842 | : 12 \ | |
3843 | : ((v) & ~0x3fffff) == 0 \ | |
3844 | ? ((v) & ~0x1fffff) == 0 \ | |
3845 | ? 11 \ | |
3846 | : 10 \ | |
3847 | : ((v) & ~0x7fffff) == 0 \ | |
3848 | ? 9 \ | |
3849 | : 8 \ | |
3850 | : ((v) & ~0xfffffff) == 0 \ | |
3851 | ? ((v) & ~0x3ffffff) == 0 \ | |
3852 | ? ((v) & ~0x1ffffff) == 0 \ | |
3853 | ? 7 \ | |
3854 | : 6 \ | |
3855 | : ((v) & ~0x7ffffff) == 0 \ | |
3856 | ? 5 \ | |
3857 | : 4 \ | |
3858 | : ((v) & ~0x3fffffff) == 0 \ | |
3859 | ? ((v) & ~0x1fffffff) == 0 \ | |
3860 | ? 3 \ | |
3861 | : 2 \ | |
3862 | : ((v) & ~0x7fffffff) == 0 \ | |
3863 | ? 1 \ | |
3864 | : 0) | |
3865 | ||
3866 | /* load_register() | |
67c1ffbe | 3867 | * This routine generates the least number of instructions necessary to load |
252b5132 RH |
3868 | * an absolute expression value into a register. |
3869 | */ | |
3870 | static void | |
67c0d1eb | 3871 | load_register (int reg, expressionS *ep, int dbl) |
252b5132 RH |
3872 | { |
3873 | int freg; | |
3874 | expressionS hi32, lo32; | |
3875 | ||
3876 | if (ep->X_op != O_big) | |
3877 | { | |
3878 | assert (ep->X_op == O_constant); | |
256ab948 TS |
3879 | |
3880 | /* Sign-extending 32-bit constants makes their handling easier. */ | |
2051e8c4 MR |
3881 | if (!dbl) |
3882 | normalize_constant_expr (ep); | |
256ab948 TS |
3883 | |
3884 | if (IS_SEXT_16BIT_NUM (ep->X_add_number)) | |
252b5132 RH |
3885 | { |
3886 | /* We can handle 16 bit signed values with an addiu to | |
3887 | $zero. No need to ever use daddiu here, since $zero and | |
3888 | the result are always correct in 32 bit mode. */ | |
67c0d1eb | 3889 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
3890 | return; |
3891 | } | |
3892 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
3893 | { | |
3894 | /* We can handle 16 bit unsigned values with an ori to | |
3895 | $zero. */ | |
67c0d1eb | 3896 | macro_build (ep, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
3897 | return; |
3898 | } | |
256ab948 | 3899 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number))) |
252b5132 RH |
3900 | { |
3901 | /* 32 bit values require an lui. */ | |
67c0d1eb | 3902 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_HI16); |
252b5132 | 3903 | if ((ep->X_add_number & 0xffff) != 0) |
67c0d1eb | 3904 | macro_build (ep, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
252b5132 RH |
3905 | return; |
3906 | } | |
3907 | } | |
3908 | ||
3909 | /* The value is larger than 32 bits. */ | |
3910 | ||
2051e8c4 | 3911 | if (!dbl || HAVE_32BIT_GPRS) |
252b5132 | 3912 | { |
55e08f71 NC |
3913 | char value[32]; |
3914 | ||
3915 | sprintf_vma (value, ep->X_add_number); | |
20e1fcfd | 3916 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
67c0d1eb | 3917 | macro_build (ep, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
252b5132 RH |
3918 | return; |
3919 | } | |
3920 | ||
3921 | if (ep->X_op != O_big) | |
3922 | { | |
3923 | hi32 = *ep; | |
3924 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
3925 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
3926 | hi32.X_add_number &= 0xffffffff; | |
3927 | lo32 = *ep; | |
3928 | lo32.X_add_number &= 0xffffffff; | |
3929 | } | |
3930 | else | |
3931 | { | |
3932 | assert (ep->X_add_number > 2); | |
3933 | if (ep->X_add_number == 3) | |
3934 | generic_bignum[3] = 0; | |
3935 | else if (ep->X_add_number > 4) | |
3936 | as_bad (_("Number larger than 64 bits")); | |
3937 | lo32.X_op = O_constant; | |
3938 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
3939 | hi32.X_op = O_constant; | |
3940 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
3941 | } | |
3942 | ||
3943 | if (hi32.X_add_number == 0) | |
3944 | freg = 0; | |
3945 | else | |
3946 | { | |
3947 | int shift, bit; | |
3948 | unsigned long hi, lo; | |
3949 | ||
956cd1d6 | 3950 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
3951 | { |
3952 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
3953 | { | |
67c0d1eb | 3954 | macro_build (&lo32, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
3955 | return; |
3956 | } | |
3957 | if (lo32.X_add_number & 0x80000000) | |
3958 | { | |
67c0d1eb | 3959 | macro_build (&lo32, "lui", "t,u", reg, BFD_RELOC_HI16); |
252b5132 | 3960 | if (lo32.X_add_number & 0xffff) |
67c0d1eb | 3961 | macro_build (&lo32, "ori", "t,r,i", reg, reg, BFD_RELOC_LO16); |
beae10d5 KH |
3962 | return; |
3963 | } | |
3964 | } | |
252b5132 RH |
3965 | |
3966 | /* Check for 16bit shifted constant. We know that hi32 is | |
3967 | non-zero, so start the mask on the first bit of the hi32 | |
3968 | value. */ | |
3969 | shift = 17; | |
3970 | do | |
beae10d5 KH |
3971 | { |
3972 | unsigned long himask, lomask; | |
3973 | ||
3974 | if (shift < 32) | |
3975 | { | |
3976 | himask = 0xffff >> (32 - shift); | |
3977 | lomask = (0xffff << shift) & 0xffffffff; | |
3978 | } | |
3979 | else | |
3980 | { | |
3981 | himask = 0xffff << (shift - 32); | |
3982 | lomask = 0; | |
3983 | } | |
3984 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
3985 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
3986 | { | |
3987 | expressionS tmp; | |
3988 | ||
3989 | tmp.X_op = O_constant; | |
3990 | if (shift < 32) | |
3991 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
3992 | | (lo32.X_add_number >> shift)); | |
3993 | else | |
3994 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
67c0d1eb RS |
3995 | macro_build (&tmp, "ori", "t,r,i", reg, 0, BFD_RELOC_LO16); |
3996 | macro_build (NULL, (shift >= 32) ? "dsll32" : "dsll", "d,w,<", | |
3997 | reg, reg, (shift >= 32) ? shift - 32 : shift); | |
beae10d5 KH |
3998 | return; |
3999 | } | |
f9419b05 | 4000 | ++shift; |
beae10d5 KH |
4001 | } |
4002 | while (shift <= (64 - 16)); | |
252b5132 RH |
4003 | |
4004 | /* Find the bit number of the lowest one bit, and store the | |
4005 | shifted value in hi/lo. */ | |
4006 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
4007 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
4008 | if (lo != 0) | |
4009 | { | |
4010 | bit = 0; | |
4011 | while ((lo & 1) == 0) | |
4012 | { | |
4013 | lo >>= 1; | |
4014 | ++bit; | |
4015 | } | |
4016 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
4017 | hi >>= bit; | |
4018 | } | |
4019 | else | |
4020 | { | |
4021 | bit = 32; | |
4022 | while ((hi & 1) == 0) | |
4023 | { | |
4024 | hi >>= 1; | |
4025 | ++bit; | |
4026 | } | |
4027 | lo = hi; | |
4028 | hi = 0; | |
4029 | } | |
4030 | ||
4031 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
4032 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
4033 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
4034 | { |
4035 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 4036 | if (shift != 0) |
beae10d5 | 4037 | { |
252b5132 RH |
4038 | expressionS tmp; |
4039 | ||
4040 | /* This instruction will set the register to be all | |
4041 | ones. */ | |
beae10d5 KH |
4042 | tmp.X_op = O_constant; |
4043 | tmp.X_add_number = (offsetT) -1; | |
67c0d1eb | 4044 | macro_build (&tmp, "addiu", "t,r,j", reg, 0, BFD_RELOC_LO16); |
beae10d5 KH |
4045 | if (bit != 0) |
4046 | { | |
4047 | bit += shift; | |
67c0d1eb RS |
4048 | macro_build (NULL, (bit >= 32) ? "dsll32" : "dsll", "d,w,<", |
4049 | reg, reg, (bit >= 32) ? bit - 32 : bit); | |
beae10d5 | 4050 | } |
67c0d1eb RS |
4051 | macro_build (NULL, (shift >= 32) ? "dsrl32" : "dsrl", "d,w,<", |
4052 | reg, reg, (shift >= 32) ? shift - 32 : shift); | |
beae10d5 KH |
4053 | return; |
4054 | } | |
4055 | } | |
252b5132 RH |
4056 | |
4057 | /* Sign extend hi32 before calling load_register, because we can | |
4058 | generally get better code when we load a sign extended value. */ | |
4059 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 4060 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
67c0d1eb | 4061 | load_register (reg, &hi32, 0); |
252b5132 RH |
4062 | freg = reg; |
4063 | } | |
4064 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
4065 | { | |
4066 | if (freg != 0) | |
4067 | { | |
67c0d1eb | 4068 | macro_build (NULL, "dsll32", "d,w,<", reg, freg, 0); |
252b5132 RH |
4069 | freg = reg; |
4070 | } | |
4071 | } | |
4072 | else | |
4073 | { | |
4074 | expressionS mid16; | |
4075 | ||
956cd1d6 | 4076 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 4077 | { |
67c0d1eb RS |
4078 | macro_build (&lo32, "lui", "t,u", reg, BFD_RELOC_HI16); |
4079 | macro_build (NULL, "dsrl32", "d,w,<", reg, reg, 0); | |
beae10d5 KH |
4080 | return; |
4081 | } | |
252b5132 RH |
4082 | |
4083 | if (freg != 0) | |
4084 | { | |
67c0d1eb | 4085 | macro_build (NULL, "dsll", "d,w,<", reg, freg, 16); |
252b5132 RH |
4086 | freg = reg; |
4087 | } | |
4088 | mid16 = lo32; | |
4089 | mid16.X_add_number >>= 16; | |
67c0d1eb RS |
4090 | macro_build (&mid16, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
4091 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
252b5132 RH |
4092 | freg = reg; |
4093 | } | |
4094 | if ((lo32.X_add_number & 0xffff) != 0) | |
67c0d1eb | 4095 | macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16); |
252b5132 RH |
4096 | } |
4097 | ||
269137b2 TS |
4098 | static inline void |
4099 | load_delay_nop (void) | |
4100 | { | |
4101 | if (!gpr_interlocks) | |
4102 | macro_build (NULL, "nop", ""); | |
4103 | } | |
4104 | ||
252b5132 RH |
4105 | /* Load an address into a register. */ |
4106 | ||
4107 | static void | |
67c0d1eb | 4108 | load_address (int reg, expressionS *ep, int *used_at) |
252b5132 | 4109 | { |
252b5132 RH |
4110 | if (ep->X_op != O_constant |
4111 | && ep->X_op != O_symbol) | |
4112 | { | |
4113 | as_bad (_("expression too complex")); | |
4114 | ep->X_op = O_constant; | |
4115 | } | |
4116 | ||
4117 | if (ep->X_op == O_constant) | |
4118 | { | |
67c0d1eb | 4119 | load_register (reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
4120 | return; |
4121 | } | |
4122 | ||
4123 | if (mips_pic == NO_PIC) | |
4124 | { | |
4125 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 4126 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
4127 | Otherwise we want |
4128 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
4129 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 4130 | If we have an addend, we always use the latter form. |
76b3015f | 4131 | |
d6bc6245 TS |
4132 | With 64bit address space and a usable $at we want |
4133 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4134 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
4135 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4136 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
4137 | dsll32 $reg,0 | |
3a482fd5 | 4138 | daddu $reg,$reg,$at |
76b3015f | 4139 | |
c03099e6 | 4140 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
4141 | on superscalar processors. |
4142 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4143 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4144 | dsll $reg,16 | |
4145 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
4146 | dsll $reg,16 | |
4147 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
6caf9ef4 TS |
4148 | |
4149 | For GP relative symbols in 64bit address space we can use | |
4150 | the same sequence as in 32bit address space. */ | |
aed1a261 | 4151 | if (HAVE_64BIT_SYMBOLS) |
d6bc6245 | 4152 | { |
6caf9ef4 TS |
4153 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
4154 | && !nopic_need_relax (ep->X_add_symbol, 1)) | |
4155 | { | |
4156 | relax_start (ep->X_add_symbol); | |
4157 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, | |
4158 | mips_gp_register, BFD_RELOC_GPREL16); | |
4159 | relax_switch (); | |
4160 | } | |
d6bc6245 | 4161 | |
b8285c27 | 4162 | if (*used_at == 0 && !mips_opts.noat) |
d6bc6245 | 4163 | { |
67c0d1eb RS |
4164 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_HIGHEST); |
4165 | macro_build (ep, "lui", "t,u", AT, BFD_RELOC_HI16_S); | |
4166 | macro_build (ep, "daddiu", "t,r,j", reg, reg, | |
4167 | BFD_RELOC_MIPS_HIGHER); | |
4168 | macro_build (ep, "daddiu", "t,r,j", AT, AT, BFD_RELOC_LO16); | |
4169 | macro_build (NULL, "dsll32", "d,w,<", reg, reg, 0); | |
4170 | macro_build (NULL, "daddu", "d,v,t", reg, reg, AT); | |
d6bc6245 TS |
4171 | *used_at = 1; |
4172 | } | |
4173 | else | |
4174 | { | |
67c0d1eb RS |
4175 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_HIGHEST); |
4176 | macro_build (ep, "daddiu", "t,r,j", reg, reg, | |
4177 | BFD_RELOC_MIPS_HIGHER); | |
4178 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
4179 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_HI16_S); | |
4180 | macro_build (NULL, "dsll", "d,w,<", reg, reg, 16); | |
4181 | macro_build (ep, "daddiu", "t,r,j", reg, reg, BFD_RELOC_LO16); | |
d6bc6245 | 4182 | } |
6caf9ef4 TS |
4183 | |
4184 | if (mips_relax.sequence) | |
4185 | relax_end (); | |
d6bc6245 | 4186 | } |
252b5132 RH |
4187 | else |
4188 | { | |
d6bc6245 | 4189 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 4190 | && !nopic_need_relax (ep->X_add_symbol, 1)) |
d6bc6245 | 4191 | { |
4d7206a2 | 4192 | relax_start (ep->X_add_symbol); |
67c0d1eb | 4193 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, |
17a2f251 | 4194 | mips_gp_register, BFD_RELOC_GPREL16); |
4d7206a2 | 4195 | relax_switch (); |
d6bc6245 | 4196 | } |
67c0d1eb RS |
4197 | macro_build_lui (ep, reg); |
4198 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", | |
4199 | reg, reg, BFD_RELOC_LO16); | |
4d7206a2 RS |
4200 | if (mips_relax.sequence) |
4201 | relax_end (); | |
d6bc6245 | 4202 | } |
252b5132 | 4203 | } |
0a44bf69 | 4204 | else if (!mips_big_got) |
252b5132 RH |
4205 | { |
4206 | expressionS ex; | |
4207 | ||
4208 | /* If this is a reference to an external symbol, we want | |
4209 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4210 | Otherwise we want | |
4211 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4212 | nop | |
4213 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
4214 | If there is a constant, it must be added in after. |
4215 | ||
ed6fb7bd | 4216 | If we have NewABI, we want |
f5040a92 AO |
4217 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
4218 | unless we're referencing a global symbol with a non-zero | |
4219 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
4220 | if (HAVE_NEWABI) |
4221 | { | |
f5040a92 AO |
4222 | if (ep->X_add_number) |
4223 | { | |
4d7206a2 | 4224 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 4225 | ep->X_add_number = 0; |
4d7206a2 | 4226 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4227 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
4228 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
4229 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
4230 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4231 | ex.X_op = O_constant; | |
67c0d1eb | 4232 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 4233 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 4234 | ep->X_add_number = ex.X_add_number; |
4d7206a2 | 4235 | relax_switch (); |
f5040a92 | 4236 | } |
67c0d1eb | 4237 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4238 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
4d7206a2 RS |
4239 | if (mips_relax.sequence) |
4240 | relax_end (); | |
ed6fb7bd SC |
4241 | } |
4242 | else | |
4243 | { | |
f5040a92 AO |
4244 | ex.X_add_number = ep->X_add_number; |
4245 | ep->X_add_number = 0; | |
67c0d1eb RS |
4246 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
4247 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 4248 | load_delay_nop (); |
4d7206a2 RS |
4249 | relax_start (ep->X_add_symbol); |
4250 | relax_switch (); | |
67c0d1eb | 4251 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 4252 | BFD_RELOC_LO16); |
4d7206a2 | 4253 | relax_end (); |
ed6fb7bd | 4254 | |
f5040a92 AO |
4255 | if (ex.X_add_number != 0) |
4256 | { | |
4257 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4258 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4259 | ex.X_op = O_constant; | |
67c0d1eb | 4260 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 4261 | reg, reg, BFD_RELOC_LO16); |
f5040a92 | 4262 | } |
252b5132 RH |
4263 | } |
4264 | } | |
0a44bf69 | 4265 | else if (mips_big_got) |
252b5132 RH |
4266 | { |
4267 | expressionS ex; | |
252b5132 RH |
4268 | |
4269 | /* This is the large GOT case. If this is a reference to an | |
4270 | external symbol, we want | |
4271 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
4272 | addu $reg,$reg,$gp | |
4273 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
4274 | |
4275 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
4276 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
4277 | nop | |
4278 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 4279 | If there is a constant, it must be added in after. |
f5040a92 AO |
4280 | |
4281 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
4282 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
4283 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 4284 | */ |
438c16b8 TS |
4285 | if (HAVE_NEWABI) |
4286 | { | |
4d7206a2 | 4287 | ex.X_add_number = ep->X_add_number; |
f5040a92 | 4288 | ep->X_add_number = 0; |
4d7206a2 | 4289 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4290 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_GOT_HI16); |
4291 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
4292 | reg, reg, mips_gp_register); | |
4293 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
4294 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
f5040a92 AO |
4295 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) |
4296 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4297 | else if (ex.X_add_number) | |
4298 | { | |
4299 | ex.X_op = O_constant; | |
67c0d1eb RS |
4300 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4301 | BFD_RELOC_LO16); | |
f5040a92 AO |
4302 | } |
4303 | ||
4304 | ep->X_add_number = ex.X_add_number; | |
4d7206a2 | 4305 | relax_switch (); |
67c0d1eb | 4306 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4307 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); |
67c0d1eb RS |
4308 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4309 | BFD_RELOC_MIPS_GOT_OFST); | |
4d7206a2 | 4310 | relax_end (); |
438c16b8 | 4311 | } |
252b5132 | 4312 | else |
438c16b8 | 4313 | { |
f5040a92 AO |
4314 | ex.X_add_number = ep->X_add_number; |
4315 | ep->X_add_number = 0; | |
4d7206a2 | 4316 | relax_start (ep->X_add_symbol); |
67c0d1eb RS |
4317 | macro_build (ep, "lui", "t,u", reg, BFD_RELOC_MIPS_GOT_HI16); |
4318 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
4319 | reg, reg, mips_gp_register); | |
4320 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", | |
4321 | reg, BFD_RELOC_MIPS_GOT_LO16, reg); | |
4d7206a2 RS |
4322 | relax_switch (); |
4323 | if (reg_needs_delay (mips_gp_register)) | |
438c16b8 TS |
4324 | { |
4325 | /* We need a nop before loading from $gp. This special | |
4326 | check is required because the lui which starts the main | |
4327 | instruction stream does not refer to $gp, and so will not | |
4328 | insert the nop which may be required. */ | |
67c0d1eb | 4329 | macro_build (NULL, "nop", ""); |
438c16b8 | 4330 | } |
67c0d1eb | 4331 | macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg, |
17a2f251 | 4332 | BFD_RELOC_MIPS_GOT16, mips_gp_register); |
269137b2 | 4333 | load_delay_nop (); |
67c0d1eb | 4334 | macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
17a2f251 | 4335 | BFD_RELOC_LO16); |
4d7206a2 | 4336 | relax_end (); |
438c16b8 | 4337 | |
f5040a92 AO |
4338 | if (ex.X_add_number != 0) |
4339 | { | |
4340 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4341 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4342 | ex.X_op = O_constant; | |
67c0d1eb RS |
4343 | macro_build (&ex, ADDRESS_ADDI_INSN, "t,r,j", reg, reg, |
4344 | BFD_RELOC_LO16); | |
f5040a92 | 4345 | } |
252b5132 RH |
4346 | } |
4347 | } | |
252b5132 RH |
4348 | else |
4349 | abort (); | |
8fc2e39e TS |
4350 | |
4351 | if (mips_opts.noat && *used_at == 1) | |
4352 | as_bad (_("Macro used $at after \".set noat\"")); | |
252b5132 RH |
4353 | } |
4354 | ||
ea1fb5dc RS |
4355 | /* Move the contents of register SOURCE into register DEST. */ |
4356 | ||
4357 | static void | |
67c0d1eb | 4358 | move_register (int dest, int source) |
ea1fb5dc | 4359 | { |
67c0d1eb RS |
4360 | macro_build (NULL, HAVE_32BIT_GPRS ? "addu" : "daddu", "d,v,t", |
4361 | dest, source, 0); | |
ea1fb5dc RS |
4362 | } |
4363 | ||
4d7206a2 | 4364 | /* Emit an SVR4 PIC sequence to load address LOCAL into DEST, where |
f6a22291 MR |
4365 | LOCAL is the sum of a symbol and a 16-bit or 32-bit displacement. |
4366 | The two alternatives are: | |
4d7206a2 RS |
4367 | |
4368 | Global symbol Local sybmol | |
4369 | ------------- ------------ | |
4370 | lw DEST,%got(SYMBOL) lw DEST,%got(SYMBOL + OFFSET) | |
4371 | ... ... | |
4372 | addiu DEST,DEST,OFFSET addiu DEST,DEST,%lo(SYMBOL + OFFSET) | |
4373 | ||
4374 | load_got_offset emits the first instruction and add_got_offset | |
f6a22291 MR |
4375 | emits the second for a 16-bit offset or add_got_offset_hilo emits |
4376 | a sequence to add a 32-bit offset using a scratch register. */ | |
4d7206a2 RS |
4377 | |
4378 | static void | |
67c0d1eb | 4379 | load_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
4380 | { |
4381 | expressionS global; | |
4382 | ||
4383 | global = *local; | |
4384 | global.X_add_number = 0; | |
4385 | ||
4386 | relax_start (local->X_add_symbol); | |
67c0d1eb RS |
4387 | macro_build (&global, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
4388 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 | 4389 | relax_switch (); |
67c0d1eb RS |
4390 | macro_build (local, ADDRESS_LOAD_INSN, "t,o(b)", dest, |
4391 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4d7206a2 RS |
4392 | relax_end (); |
4393 | } | |
4394 | ||
4395 | static void | |
67c0d1eb | 4396 | add_got_offset (int dest, expressionS *local) |
4d7206a2 RS |
4397 | { |
4398 | expressionS global; | |
4399 | ||
4400 | global.X_op = O_constant; | |
4401 | global.X_op_symbol = NULL; | |
4402 | global.X_add_symbol = NULL; | |
4403 | global.X_add_number = local->X_add_number; | |
4404 | ||
4405 | relax_start (local->X_add_symbol); | |
67c0d1eb | 4406 | macro_build (&global, ADDRESS_ADDI_INSN, "t,r,j", |
4d7206a2 RS |
4407 | dest, dest, BFD_RELOC_LO16); |
4408 | relax_switch (); | |
67c0d1eb | 4409 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", dest, dest, BFD_RELOC_LO16); |
4d7206a2 RS |
4410 | relax_end (); |
4411 | } | |
4412 | ||
f6a22291 MR |
4413 | static void |
4414 | add_got_offset_hilo (int dest, expressionS *local, int tmp) | |
4415 | { | |
4416 | expressionS global; | |
4417 | int hold_mips_optimize; | |
4418 | ||
4419 | global.X_op = O_constant; | |
4420 | global.X_op_symbol = NULL; | |
4421 | global.X_add_symbol = NULL; | |
4422 | global.X_add_number = local->X_add_number; | |
4423 | ||
4424 | relax_start (local->X_add_symbol); | |
4425 | load_register (tmp, &global, HAVE_64BIT_ADDRESSES); | |
4426 | relax_switch (); | |
4427 | /* Set mips_optimize around the lui instruction to avoid | |
4428 | inserting an unnecessary nop after the lw. */ | |
4429 | hold_mips_optimize = mips_optimize; | |
4430 | mips_optimize = 2; | |
4431 | macro_build_lui (&global, tmp); | |
4432 | mips_optimize = hold_mips_optimize; | |
4433 | macro_build (local, ADDRESS_ADDI_INSN, "t,r,j", tmp, tmp, BFD_RELOC_LO16); | |
4434 | relax_end (); | |
4435 | ||
4436 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dest, dest, tmp); | |
4437 | } | |
4438 | ||
252b5132 RH |
4439 | /* |
4440 | * Build macros | |
4441 | * This routine implements the seemingly endless macro or synthesized | |
4442 | * instructions and addressing modes in the mips assembly language. Many | |
4443 | * of these macros are simple and are similar to each other. These could | |
67c1ffbe | 4444 | * probably be handled by some kind of table or grammar approach instead of |
252b5132 RH |
4445 | * this verbose method. Others are not simple macros but are more like |
4446 | * optimizing code generation. | |
4447 | * One interesting optimization is when several store macros appear | |
67c1ffbe | 4448 | * consecutively that would load AT with the upper half of the same address. |
252b5132 RH |
4449 | * The ensuing load upper instructions are ommited. This implies some kind |
4450 | * of global optimization. We currently only optimize within a single macro. | |
4451 | * For many of the load and store macros if the address is specified as a | |
4452 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
4453 | * first load register 'at' with zero and use it as the base register. The | |
4454 | * mips assembler simply uses register $zero. Just one tiny optimization | |
4455 | * we're missing. | |
4456 | */ | |
4457 | static void | |
17a2f251 | 4458 | macro (struct mips_cl_insn *ip) |
252b5132 | 4459 | { |
3994f87e | 4460 | int treg, sreg, dreg, breg; |
252b5132 RH |
4461 | int tempreg; |
4462 | int mask; | |
43841e91 | 4463 | int used_at = 0; |
252b5132 RH |
4464 | expressionS expr1; |
4465 | const char *s; | |
4466 | const char *s2; | |
4467 | const char *fmt; | |
4468 | int likely = 0; | |
4469 | int dbl = 0; | |
4470 | int coproc = 0; | |
4471 | int lr = 0; | |
4472 | int imm = 0; | |
1abe91b1 | 4473 | int call = 0; |
252b5132 | 4474 | int off; |
67c0d1eb | 4475 | offsetT maxnum; |
252b5132 | 4476 | bfd_reloc_code_real_type r; |
252b5132 RH |
4477 | int hold_mips_optimize; |
4478 | ||
4479 | assert (! mips_opts.mips16); | |
4480 | ||
4481 | treg = (ip->insn_opcode >> 16) & 0x1f; | |
4482 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
4483 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
4484 | mask = ip->insn_mo->mask; | |
4485 | ||
4486 | expr1.X_op = O_constant; | |
4487 | expr1.X_op_symbol = NULL; | |
4488 | expr1.X_add_symbol = NULL; | |
4489 | expr1.X_add_number = 1; | |
4490 | ||
4491 | switch (mask) | |
4492 | { | |
4493 | case M_DABS: | |
4494 | dbl = 1; | |
4495 | case M_ABS: | |
4496 | /* bgez $a0,.+12 | |
4497 | move v0,$a0 | |
4498 | sub v0,$zero,$a0 | |
4499 | */ | |
4500 | ||
7d10b47d | 4501 | start_noreorder (); |
252b5132 RH |
4502 | |
4503 | expr1.X_add_number = 8; | |
67c0d1eb | 4504 | macro_build (&expr1, "bgez", "s,p", sreg); |
252b5132 | 4505 | if (dreg == sreg) |
67c0d1eb | 4506 | macro_build (NULL, "nop", "", 0); |
252b5132 | 4507 | else |
67c0d1eb RS |
4508 | move_register (dreg, sreg); |
4509 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); | |
252b5132 | 4510 | |
7d10b47d | 4511 | end_noreorder (); |
8fc2e39e | 4512 | break; |
252b5132 RH |
4513 | |
4514 | case M_ADD_I: | |
4515 | s = "addi"; | |
4516 | s2 = "add"; | |
4517 | goto do_addi; | |
4518 | case M_ADDU_I: | |
4519 | s = "addiu"; | |
4520 | s2 = "addu"; | |
4521 | goto do_addi; | |
4522 | case M_DADD_I: | |
4523 | dbl = 1; | |
4524 | s = "daddi"; | |
4525 | s2 = "dadd"; | |
4526 | goto do_addi; | |
4527 | case M_DADDU_I: | |
4528 | dbl = 1; | |
4529 | s = "daddiu"; | |
4530 | s2 = "daddu"; | |
4531 | do_addi: | |
4532 | if (imm_expr.X_op == O_constant | |
4533 | && imm_expr.X_add_number >= -0x8000 | |
4534 | && imm_expr.X_add_number < 0x8000) | |
4535 | { | |
67c0d1eb | 4536 | macro_build (&imm_expr, s, "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 4537 | break; |
252b5132 | 4538 | } |
8fc2e39e | 4539 | used_at = 1; |
67c0d1eb RS |
4540 | load_register (AT, &imm_expr, dbl); |
4541 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
4542 | break; |
4543 | ||
4544 | case M_AND_I: | |
4545 | s = "andi"; | |
4546 | s2 = "and"; | |
4547 | goto do_bit; | |
4548 | case M_OR_I: | |
4549 | s = "ori"; | |
4550 | s2 = "or"; | |
4551 | goto do_bit; | |
4552 | case M_NOR_I: | |
4553 | s = ""; | |
4554 | s2 = "nor"; | |
4555 | goto do_bit; | |
4556 | case M_XOR_I: | |
4557 | s = "xori"; | |
4558 | s2 = "xor"; | |
4559 | do_bit: | |
4560 | if (imm_expr.X_op == O_constant | |
4561 | && imm_expr.X_add_number >= 0 | |
4562 | && imm_expr.X_add_number < 0x10000) | |
4563 | { | |
4564 | if (mask != M_NOR_I) | |
67c0d1eb | 4565 | macro_build (&imm_expr, s, "t,r,i", treg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
4566 | else |
4567 | { | |
67c0d1eb RS |
4568 | macro_build (&imm_expr, "ori", "t,r,i", |
4569 | treg, sreg, BFD_RELOC_LO16); | |
4570 | macro_build (NULL, "nor", "d,v,t", treg, treg, 0); | |
252b5132 | 4571 | } |
8fc2e39e | 4572 | break; |
252b5132 RH |
4573 | } |
4574 | ||
8fc2e39e | 4575 | used_at = 1; |
67c0d1eb RS |
4576 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4577 | macro_build (NULL, s2, "d,v,t", treg, sreg, AT); | |
252b5132 RH |
4578 | break; |
4579 | ||
4580 | case M_BEQ_I: | |
4581 | s = "beq"; | |
4582 | goto beq_i; | |
4583 | case M_BEQL_I: | |
4584 | s = "beql"; | |
4585 | likely = 1; | |
4586 | goto beq_i; | |
4587 | case M_BNE_I: | |
4588 | s = "bne"; | |
4589 | goto beq_i; | |
4590 | case M_BNEL_I: | |
4591 | s = "bnel"; | |
4592 | likely = 1; | |
4593 | beq_i: | |
4594 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4595 | { | |
67c0d1eb | 4596 | macro_build (&offset_expr, s, "s,t,p", sreg, 0); |
8fc2e39e | 4597 | break; |
252b5132 | 4598 | } |
8fc2e39e | 4599 | used_at = 1; |
67c0d1eb RS |
4600 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
4601 | macro_build (&offset_expr, s, "s,t,p", sreg, AT); | |
252b5132 RH |
4602 | break; |
4603 | ||
4604 | case M_BGEL: | |
4605 | likely = 1; | |
4606 | case M_BGE: | |
4607 | if (treg == 0) | |
4608 | { | |
67c0d1eb | 4609 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", sreg); |
8fc2e39e | 4610 | break; |
252b5132 RH |
4611 | } |
4612 | if (sreg == 0) | |
4613 | { | |
67c0d1eb | 4614 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", treg); |
8fc2e39e | 4615 | break; |
252b5132 | 4616 | } |
8fc2e39e | 4617 | used_at = 1; |
67c0d1eb RS |
4618 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); |
4619 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4620 | break; |
4621 | ||
4622 | case M_BGTL_I: | |
4623 | likely = 1; | |
4624 | case M_BGT_I: | |
4625 | /* check for > max integer */ | |
4626 | maxnum = 0x7fffffff; | |
ca4e0257 | 4627 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4628 | { |
4629 | maxnum <<= 16; | |
4630 | maxnum |= 0xffff; | |
4631 | maxnum <<= 16; | |
4632 | maxnum |= 0xffff; | |
4633 | } | |
4634 | if (imm_expr.X_op == O_constant | |
4635 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 4636 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4637 | { |
4638 | do_false: | |
4639 | /* result is always false */ | |
4640 | if (! likely) | |
67c0d1eb | 4641 | macro_build (NULL, "nop", "", 0); |
252b5132 | 4642 | else |
67c0d1eb | 4643 | macro_build (&offset_expr, "bnel", "s,t,p", 0, 0); |
8fc2e39e | 4644 | break; |
252b5132 RH |
4645 | } |
4646 | if (imm_expr.X_op != O_constant) | |
4647 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4648 | ++imm_expr.X_add_number; |
252b5132 RH |
4649 | /* FALLTHROUGH */ |
4650 | case M_BGE_I: | |
4651 | case M_BGEL_I: | |
4652 | if (mask == M_BGEL_I) | |
4653 | likely = 1; | |
4654 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4655 | { | |
67c0d1eb | 4656 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", sreg); |
8fc2e39e | 4657 | break; |
252b5132 RH |
4658 | } |
4659 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4660 | { | |
67c0d1eb | 4661 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", sreg); |
8fc2e39e | 4662 | break; |
252b5132 RH |
4663 | } |
4664 | maxnum = 0x7fffffff; | |
ca4e0257 | 4665 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4666 | { |
4667 | maxnum <<= 16; | |
4668 | maxnum |= 0xffff; | |
4669 | maxnum <<= 16; | |
4670 | maxnum |= 0xffff; | |
4671 | } | |
4672 | maxnum = - maxnum - 1; | |
4673 | if (imm_expr.X_op == O_constant | |
4674 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 4675 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4676 | { |
4677 | do_true: | |
4678 | /* result is always true */ | |
4679 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
67c0d1eb | 4680 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 4681 | break; |
252b5132 | 4682 | } |
8fc2e39e | 4683 | used_at = 1; |
67c0d1eb RS |
4684 | set_at (sreg, 0); |
4685 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4686 | break; |
4687 | ||
4688 | case M_BGEUL: | |
4689 | likely = 1; | |
4690 | case M_BGEU: | |
4691 | if (treg == 0) | |
4692 | goto do_true; | |
4693 | if (sreg == 0) | |
4694 | { | |
67c0d1eb | 4695 | macro_build (&offset_expr, likely ? "beql" : "beq", |
17a2f251 | 4696 | "s,t,p", 0, treg); |
8fc2e39e | 4697 | break; |
252b5132 | 4698 | } |
8fc2e39e | 4699 | used_at = 1; |
67c0d1eb RS |
4700 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); |
4701 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4702 | break; |
4703 | ||
4704 | case M_BGTUL_I: | |
4705 | likely = 1; | |
4706 | case M_BGTU_I: | |
4707 | if (sreg == 0 | |
ca4e0257 | 4708 | || (HAVE_32BIT_GPRS |
252b5132 | 4709 | && imm_expr.X_op == O_constant |
956cd1d6 | 4710 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
4711 | goto do_false; |
4712 | if (imm_expr.X_op != O_constant) | |
4713 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4714 | ++imm_expr.X_add_number; |
252b5132 RH |
4715 | /* FALLTHROUGH */ |
4716 | case M_BGEU_I: | |
4717 | case M_BGEUL_I: | |
4718 | if (mask == M_BGEUL_I) | |
4719 | likely = 1; | |
4720 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4721 | goto do_true; | |
4722 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4723 | { | |
67c0d1eb | 4724 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 4725 | "s,t,p", sreg, 0); |
8fc2e39e | 4726 | break; |
252b5132 | 4727 | } |
8fc2e39e | 4728 | used_at = 1; |
67c0d1eb RS |
4729 | set_at (sreg, 1); |
4730 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4731 | break; |
4732 | ||
4733 | case M_BGTL: | |
4734 | likely = 1; | |
4735 | case M_BGT: | |
4736 | if (treg == 0) | |
4737 | { | |
67c0d1eb | 4738 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", sreg); |
8fc2e39e | 4739 | break; |
252b5132 RH |
4740 | } |
4741 | if (sreg == 0) | |
4742 | { | |
67c0d1eb | 4743 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", treg); |
8fc2e39e | 4744 | break; |
252b5132 | 4745 | } |
8fc2e39e | 4746 | used_at = 1; |
67c0d1eb RS |
4747 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); |
4748 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
4749 | break; |
4750 | ||
4751 | case M_BGTUL: | |
4752 | likely = 1; | |
4753 | case M_BGTU: | |
4754 | if (treg == 0) | |
4755 | { | |
67c0d1eb | 4756 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 4757 | "s,t,p", sreg, 0); |
8fc2e39e | 4758 | break; |
252b5132 RH |
4759 | } |
4760 | if (sreg == 0) | |
4761 | goto do_false; | |
8fc2e39e | 4762 | used_at = 1; |
67c0d1eb RS |
4763 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); |
4764 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
4765 | break; |
4766 | ||
4767 | case M_BLEL: | |
4768 | likely = 1; | |
4769 | case M_BLE: | |
4770 | if (treg == 0) | |
4771 | { | |
67c0d1eb | 4772 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", sreg); |
8fc2e39e | 4773 | break; |
252b5132 RH |
4774 | } |
4775 | if (sreg == 0) | |
4776 | { | |
67c0d1eb | 4777 | macro_build (&offset_expr, likely ? "bgezl" : "bgez", "s,p", treg); |
8fc2e39e | 4778 | break; |
252b5132 | 4779 | } |
8fc2e39e | 4780 | used_at = 1; |
67c0d1eb RS |
4781 | macro_build (NULL, "slt", "d,v,t", AT, treg, sreg); |
4782 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4783 | break; |
4784 | ||
4785 | case M_BLEL_I: | |
4786 | likely = 1; | |
4787 | case M_BLE_I: | |
4788 | maxnum = 0x7fffffff; | |
ca4e0257 | 4789 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4790 | { |
4791 | maxnum <<= 16; | |
4792 | maxnum |= 0xffff; | |
4793 | maxnum <<= 16; | |
4794 | maxnum |= 0xffff; | |
4795 | } | |
4796 | if (imm_expr.X_op == O_constant | |
4797 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 4798 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4799 | goto do_true; |
4800 | if (imm_expr.X_op != O_constant) | |
4801 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4802 | ++imm_expr.X_add_number; |
252b5132 RH |
4803 | /* FALLTHROUGH */ |
4804 | case M_BLT_I: | |
4805 | case M_BLTL_I: | |
4806 | if (mask == M_BLTL_I) | |
4807 | likely = 1; | |
4808 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4809 | { | |
67c0d1eb | 4810 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", sreg); |
8fc2e39e | 4811 | break; |
252b5132 RH |
4812 | } |
4813 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4814 | { | |
67c0d1eb | 4815 | macro_build (&offset_expr, likely ? "blezl" : "blez", "s,p", sreg); |
8fc2e39e | 4816 | break; |
252b5132 | 4817 | } |
8fc2e39e | 4818 | used_at = 1; |
67c0d1eb RS |
4819 | set_at (sreg, 0); |
4820 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
4821 | break; |
4822 | ||
4823 | case M_BLEUL: | |
4824 | likely = 1; | |
4825 | case M_BLEU: | |
4826 | if (treg == 0) | |
4827 | { | |
67c0d1eb | 4828 | macro_build (&offset_expr, likely ? "beql" : "beq", |
17a2f251 | 4829 | "s,t,p", sreg, 0); |
8fc2e39e | 4830 | break; |
252b5132 RH |
4831 | } |
4832 | if (sreg == 0) | |
4833 | goto do_true; | |
8fc2e39e | 4834 | used_at = 1; |
67c0d1eb RS |
4835 | macro_build (NULL, "sltu", "d,v,t", AT, treg, sreg); |
4836 | macro_build (&offset_expr, likely ? "beql" : "beq", "s,t,p", AT, 0); | |
252b5132 RH |
4837 | break; |
4838 | ||
4839 | case M_BLEUL_I: | |
4840 | likely = 1; | |
4841 | case M_BLEU_I: | |
4842 | if (sreg == 0 | |
ca4e0257 | 4843 | || (HAVE_32BIT_GPRS |
252b5132 | 4844 | && imm_expr.X_op == O_constant |
956cd1d6 | 4845 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
4846 | goto do_true; |
4847 | if (imm_expr.X_op != O_constant) | |
4848 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4849 | ++imm_expr.X_add_number; |
252b5132 RH |
4850 | /* FALLTHROUGH */ |
4851 | case M_BLTU_I: | |
4852 | case M_BLTUL_I: | |
4853 | if (mask == M_BLTUL_I) | |
4854 | likely = 1; | |
4855 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4856 | goto do_false; | |
4857 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4858 | { | |
67c0d1eb | 4859 | macro_build (&offset_expr, likely ? "beql" : "beq", |
252b5132 | 4860 | "s,t,p", sreg, 0); |
8fc2e39e | 4861 | break; |
252b5132 | 4862 | } |
8fc2e39e | 4863 | used_at = 1; |
67c0d1eb RS |
4864 | set_at (sreg, 1); |
4865 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
4866 | break; |
4867 | ||
4868 | case M_BLTL: | |
4869 | likely = 1; | |
4870 | case M_BLT: | |
4871 | if (treg == 0) | |
4872 | { | |
67c0d1eb | 4873 | macro_build (&offset_expr, likely ? "bltzl" : "bltz", "s,p", sreg); |
8fc2e39e | 4874 | break; |
252b5132 RH |
4875 | } |
4876 | if (sreg == 0) | |
4877 | { | |
67c0d1eb | 4878 | macro_build (&offset_expr, likely ? "bgtzl" : "bgtz", "s,p", treg); |
8fc2e39e | 4879 | break; |
252b5132 | 4880 | } |
8fc2e39e | 4881 | used_at = 1; |
67c0d1eb RS |
4882 | macro_build (NULL, "slt", "d,v,t", AT, sreg, treg); |
4883 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
4884 | break; |
4885 | ||
4886 | case M_BLTUL: | |
4887 | likely = 1; | |
4888 | case M_BLTU: | |
4889 | if (treg == 0) | |
4890 | goto do_false; | |
4891 | if (sreg == 0) | |
4892 | { | |
67c0d1eb | 4893 | macro_build (&offset_expr, likely ? "bnel" : "bne", |
17a2f251 | 4894 | "s,t,p", 0, treg); |
8fc2e39e | 4895 | break; |
252b5132 | 4896 | } |
8fc2e39e | 4897 | used_at = 1; |
67c0d1eb RS |
4898 | macro_build (NULL, "sltu", "d,v,t", AT, sreg, treg); |
4899 | macro_build (&offset_expr, likely ? "bnel" : "bne", "s,t,p", AT, 0); | |
252b5132 RH |
4900 | break; |
4901 | ||
5f74bc13 CD |
4902 | case M_DEXT: |
4903 | { | |
4904 | unsigned long pos; | |
4905 | unsigned long size; | |
4906 | ||
4907 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) | |
4908 | { | |
4909 | as_bad (_("Unsupported large constant")); | |
4910 | pos = size = 1; | |
4911 | } | |
4912 | else | |
4913 | { | |
4914 | pos = (unsigned long) imm_expr.X_add_number; | |
4915 | size = (unsigned long) imm2_expr.X_add_number; | |
4916 | } | |
4917 | ||
4918 | if (pos > 63) | |
4919 | { | |
4920 | as_bad (_("Improper position (%lu)"), pos); | |
4921 | pos = 1; | |
4922 | } | |
4923 | if (size == 0 || size > 64 | |
4924 | || (pos + size - 1) > 63) | |
4925 | { | |
4926 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
4927 | size, pos); | |
4928 | size = 1; | |
4929 | } | |
4930 | ||
4931 | if (size <= 32 && pos < 32) | |
4932 | { | |
4933 | s = "dext"; | |
4934 | fmt = "t,r,+A,+C"; | |
4935 | } | |
4936 | else if (size <= 32) | |
4937 | { | |
4938 | s = "dextu"; | |
4939 | fmt = "t,r,+E,+H"; | |
4940 | } | |
4941 | else | |
4942 | { | |
4943 | s = "dextm"; | |
4944 | fmt = "t,r,+A,+G"; | |
4945 | } | |
67c0d1eb | 4946 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, pos, size - 1); |
5f74bc13 | 4947 | } |
8fc2e39e | 4948 | break; |
5f74bc13 CD |
4949 | |
4950 | case M_DINS: | |
4951 | { | |
4952 | unsigned long pos; | |
4953 | unsigned long size; | |
4954 | ||
4955 | if (imm_expr.X_op != O_constant || imm2_expr.X_op != O_constant) | |
4956 | { | |
4957 | as_bad (_("Unsupported large constant")); | |
4958 | pos = size = 1; | |
4959 | } | |
4960 | else | |
4961 | { | |
4962 | pos = (unsigned long) imm_expr.X_add_number; | |
4963 | size = (unsigned long) imm2_expr.X_add_number; | |
4964 | } | |
4965 | ||
4966 | if (pos > 63) | |
4967 | { | |
4968 | as_bad (_("Improper position (%lu)"), pos); | |
4969 | pos = 1; | |
4970 | } | |
4971 | if (size == 0 || size > 64 | |
4972 | || (pos + size - 1) > 63) | |
4973 | { | |
4974 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
4975 | size, pos); | |
4976 | size = 1; | |
4977 | } | |
4978 | ||
4979 | if (pos < 32 && (pos + size - 1) < 32) | |
4980 | { | |
4981 | s = "dins"; | |
4982 | fmt = "t,r,+A,+B"; | |
4983 | } | |
4984 | else if (pos >= 32) | |
4985 | { | |
4986 | s = "dinsu"; | |
4987 | fmt = "t,r,+E,+F"; | |
4988 | } | |
4989 | else | |
4990 | { | |
4991 | s = "dinsm"; | |
4992 | fmt = "t,r,+A,+F"; | |
4993 | } | |
67c0d1eb RS |
4994 | macro_build ((expressionS *) NULL, s, fmt, treg, sreg, pos, |
4995 | pos + size - 1); | |
5f74bc13 | 4996 | } |
8fc2e39e | 4997 | break; |
5f74bc13 | 4998 | |
252b5132 RH |
4999 | case M_DDIV_3: |
5000 | dbl = 1; | |
5001 | case M_DIV_3: | |
5002 | s = "mflo"; | |
5003 | goto do_div3; | |
5004 | case M_DREM_3: | |
5005 | dbl = 1; | |
5006 | case M_REM_3: | |
5007 | s = "mfhi"; | |
5008 | do_div3: | |
5009 | if (treg == 0) | |
5010 | { | |
5011 | as_warn (_("Divide by zero.")); | |
5012 | if (mips_trap) | |
67c0d1eb | 5013 | macro_build (NULL, "teq", "s,t,q", 0, 0, 7); |
252b5132 | 5014 | else |
67c0d1eb | 5015 | macro_build (NULL, "break", "c", 7); |
8fc2e39e | 5016 | break; |
252b5132 RH |
5017 | } |
5018 | ||
7d10b47d | 5019 | start_noreorder (); |
252b5132 RH |
5020 | if (mips_trap) |
5021 | { | |
67c0d1eb RS |
5022 | macro_build (NULL, "teq", "s,t,q", treg, 0, 7); |
5023 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); | |
252b5132 RH |
5024 | } |
5025 | else | |
5026 | { | |
5027 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5028 | macro_build (&expr1, "bne", "s,t,p", treg, 0); |
5029 | macro_build (NULL, dbl ? "ddiv" : "div", "z,s,t", sreg, treg); | |
5030 | macro_build (NULL, "break", "c", 7); | |
252b5132 RH |
5031 | } |
5032 | expr1.X_add_number = -1; | |
8fc2e39e | 5033 | used_at = 1; |
f6a22291 | 5034 | load_register (AT, &expr1, dbl); |
252b5132 | 5035 | expr1.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); |
67c0d1eb | 5036 | macro_build (&expr1, "bne", "s,t,p", treg, AT); |
252b5132 RH |
5037 | if (dbl) |
5038 | { | |
5039 | expr1.X_add_number = 1; | |
f6a22291 | 5040 | load_register (AT, &expr1, dbl); |
67c0d1eb | 5041 | macro_build (NULL, "dsll32", "d,w,<", AT, AT, 31); |
252b5132 RH |
5042 | } |
5043 | else | |
5044 | { | |
5045 | expr1.X_add_number = 0x80000000; | |
67c0d1eb | 5046 | macro_build (&expr1, "lui", "t,u", AT, BFD_RELOC_HI16); |
252b5132 RH |
5047 | } |
5048 | if (mips_trap) | |
5049 | { | |
67c0d1eb | 5050 | macro_build (NULL, "teq", "s,t,q", sreg, AT, 6); |
252b5132 RH |
5051 | /* We want to close the noreorder block as soon as possible, so |
5052 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5053 | end_noreorder (); |
252b5132 RH |
5054 | } |
5055 | else | |
5056 | { | |
5057 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5058 | macro_build (&expr1, "bne", "s,t,p", sreg, AT); |
5059 | macro_build (NULL, "nop", "", 0); | |
252b5132 RH |
5060 | |
5061 | /* We want to close the noreorder block as soon as possible, so | |
5062 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5063 | end_noreorder (); |
252b5132 | 5064 | |
67c0d1eb | 5065 | macro_build (NULL, "break", "c", 6); |
252b5132 | 5066 | } |
67c0d1eb | 5067 | macro_build (NULL, s, "d", dreg); |
252b5132 RH |
5068 | break; |
5069 | ||
5070 | case M_DIV_3I: | |
5071 | s = "div"; | |
5072 | s2 = "mflo"; | |
5073 | goto do_divi; | |
5074 | case M_DIVU_3I: | |
5075 | s = "divu"; | |
5076 | s2 = "mflo"; | |
5077 | goto do_divi; | |
5078 | case M_REM_3I: | |
5079 | s = "div"; | |
5080 | s2 = "mfhi"; | |
5081 | goto do_divi; | |
5082 | case M_REMU_3I: | |
5083 | s = "divu"; | |
5084 | s2 = "mfhi"; | |
5085 | goto do_divi; | |
5086 | case M_DDIV_3I: | |
5087 | dbl = 1; | |
5088 | s = "ddiv"; | |
5089 | s2 = "mflo"; | |
5090 | goto do_divi; | |
5091 | case M_DDIVU_3I: | |
5092 | dbl = 1; | |
5093 | s = "ddivu"; | |
5094 | s2 = "mflo"; | |
5095 | goto do_divi; | |
5096 | case M_DREM_3I: | |
5097 | dbl = 1; | |
5098 | s = "ddiv"; | |
5099 | s2 = "mfhi"; | |
5100 | goto do_divi; | |
5101 | case M_DREMU_3I: | |
5102 | dbl = 1; | |
5103 | s = "ddivu"; | |
5104 | s2 = "mfhi"; | |
5105 | do_divi: | |
5106 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
5107 | { | |
5108 | as_warn (_("Divide by zero.")); | |
5109 | if (mips_trap) | |
67c0d1eb | 5110 | macro_build (NULL, "teq", "s,t,q", 0, 0, 7); |
252b5132 | 5111 | else |
67c0d1eb | 5112 | macro_build (NULL, "break", "c", 7); |
8fc2e39e | 5113 | break; |
252b5132 RH |
5114 | } |
5115 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
5116 | { | |
5117 | if (strcmp (s2, "mflo") == 0) | |
67c0d1eb | 5118 | move_register (dreg, sreg); |
252b5132 | 5119 | else |
67c0d1eb | 5120 | move_register (dreg, 0); |
8fc2e39e | 5121 | break; |
252b5132 RH |
5122 | } |
5123 | if (imm_expr.X_op == O_constant | |
5124 | && imm_expr.X_add_number == -1 | |
5125 | && s[strlen (s) - 1] != 'u') | |
5126 | { | |
5127 | if (strcmp (s2, "mflo") == 0) | |
5128 | { | |
67c0d1eb | 5129 | macro_build (NULL, dbl ? "dneg" : "neg", "d,w", dreg, sreg); |
252b5132 RH |
5130 | } |
5131 | else | |
67c0d1eb | 5132 | move_register (dreg, 0); |
8fc2e39e | 5133 | break; |
252b5132 RH |
5134 | } |
5135 | ||
8fc2e39e | 5136 | used_at = 1; |
67c0d1eb RS |
5137 | load_register (AT, &imm_expr, dbl); |
5138 | macro_build (NULL, s, "z,s,t", sreg, AT); | |
5139 | macro_build (NULL, s2, "d", dreg); | |
252b5132 RH |
5140 | break; |
5141 | ||
5142 | case M_DIVU_3: | |
5143 | s = "divu"; | |
5144 | s2 = "mflo"; | |
5145 | goto do_divu3; | |
5146 | case M_REMU_3: | |
5147 | s = "divu"; | |
5148 | s2 = "mfhi"; | |
5149 | goto do_divu3; | |
5150 | case M_DDIVU_3: | |
5151 | s = "ddivu"; | |
5152 | s2 = "mflo"; | |
5153 | goto do_divu3; | |
5154 | case M_DREMU_3: | |
5155 | s = "ddivu"; | |
5156 | s2 = "mfhi"; | |
5157 | do_divu3: | |
7d10b47d | 5158 | start_noreorder (); |
252b5132 RH |
5159 | if (mips_trap) |
5160 | { | |
67c0d1eb RS |
5161 | macro_build (NULL, "teq", "s,t,q", treg, 0, 7); |
5162 | macro_build (NULL, s, "z,s,t", sreg, treg); | |
252b5132 RH |
5163 | /* We want to close the noreorder block as soon as possible, so |
5164 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5165 | end_noreorder (); |
252b5132 RH |
5166 | } |
5167 | else | |
5168 | { | |
5169 | expr1.X_add_number = 8; | |
67c0d1eb RS |
5170 | macro_build (&expr1, "bne", "s,t,p", treg, 0); |
5171 | macro_build (NULL, s, "z,s,t", sreg, treg); | |
252b5132 RH |
5172 | |
5173 | /* We want to close the noreorder block as soon as possible, so | |
5174 | that later insns are available for delay slot filling. */ | |
7d10b47d | 5175 | end_noreorder (); |
67c0d1eb | 5176 | macro_build (NULL, "break", "c", 7); |
252b5132 | 5177 | } |
67c0d1eb | 5178 | macro_build (NULL, s2, "d", dreg); |
8fc2e39e | 5179 | break; |
252b5132 | 5180 | |
1abe91b1 MR |
5181 | case M_DLCA_AB: |
5182 | dbl = 1; | |
5183 | case M_LCA_AB: | |
5184 | call = 1; | |
5185 | goto do_la; | |
252b5132 RH |
5186 | case M_DLA_AB: |
5187 | dbl = 1; | |
5188 | case M_LA_AB: | |
1abe91b1 | 5189 | do_la: |
252b5132 RH |
5190 | /* Load the address of a symbol into a register. If breg is not |
5191 | zero, we then add a base register to it. */ | |
5192 | ||
3bec30a8 TS |
5193 | if (dbl && HAVE_32BIT_GPRS) |
5194 | as_warn (_("dla used to load 32-bit register")); | |
5195 | ||
c90bbe5b | 5196 | if (! dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
5197 | as_warn (_("la used to load 64-bit address")); |
5198 | ||
0c11417f MR |
5199 | if (offset_expr.X_op == O_constant |
5200 | && offset_expr.X_add_number >= -0x8000 | |
5201 | && offset_expr.X_add_number < 0x8000) | |
5202 | { | |
aed1a261 | 5203 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, |
17a2f251 | 5204 | "t,r,j", treg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 5205 | break; |
0c11417f MR |
5206 | } |
5207 | ||
b8285c27 | 5208 | if (!mips_opts.noat && (treg == breg)) |
afdbd6d0 CD |
5209 | { |
5210 | tempreg = AT; | |
5211 | used_at = 1; | |
5212 | } | |
5213 | else | |
5214 | { | |
5215 | tempreg = treg; | |
afdbd6d0 CD |
5216 | } |
5217 | ||
252b5132 RH |
5218 | if (offset_expr.X_op != O_symbol |
5219 | && offset_expr.X_op != O_constant) | |
5220 | { | |
5221 | as_bad (_("expression too complex")); | |
5222 | offset_expr.X_op = O_constant; | |
5223 | } | |
5224 | ||
252b5132 | 5225 | if (offset_expr.X_op == O_constant) |
aed1a261 | 5226 | load_register (tempreg, &offset_expr, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
5227 | else if (mips_pic == NO_PIC) |
5228 | { | |
d6bc6245 | 5229 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 5230 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
5231 | Otherwise we want |
5232 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5233 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5234 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 5235 | so we may as well always use the latter form. |
76b3015f | 5236 | |
6caf9ef4 TS |
5237 | With 64bit address space and a usable $at we want |
5238 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5239 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5240 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5241 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
5242 | dsll32 $tempreg,0 | |
5243 | daddu $tempreg,$tempreg,$at | |
5244 | ||
5245 | If $at is already in use, we use a path which is suboptimal | |
5246 | on superscalar processors. | |
5247 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5248 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5249 | dsll $tempreg,16 | |
5250 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5251 | dsll $tempreg,16 | |
5252 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
5253 | ||
5254 | For GP relative symbols in 64bit address space we can use | |
5255 | the same sequence as in 32bit address space. */ | |
aed1a261 | 5256 | if (HAVE_64BIT_SYMBOLS) |
252b5132 | 5257 | { |
6caf9ef4 TS |
5258 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
5259 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
5260 | { | |
5261 | relax_start (offset_expr.X_add_symbol); | |
5262 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
5263 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
5264 | relax_switch (); | |
5265 | } | |
d6bc6245 | 5266 | |
b8285c27 | 5267 | if (used_at == 0 && !mips_opts.noat) |
98d3f06f | 5268 | { |
67c0d1eb | 5269 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5270 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 5271 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5272 | AT, BFD_RELOC_HI16_S); |
67c0d1eb | 5273 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5274 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb | 5275 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5276 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb RS |
5277 | macro_build (NULL, "dsll32", "d,w,<", tempreg, tempreg, 0); |
5278 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); | |
98d3f06f KH |
5279 | used_at = 1; |
5280 | } | |
5281 | else | |
5282 | { | |
67c0d1eb | 5283 | macro_build (&offset_expr, "lui", "t,u", |
17a2f251 | 5284 | tempreg, BFD_RELOC_MIPS_HIGHEST); |
67c0d1eb | 5285 | macro_build (&offset_expr, "daddiu", "t,r,j", |
17a2f251 | 5286 | tempreg, tempreg, BFD_RELOC_MIPS_HIGHER); |
67c0d1eb RS |
5287 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); |
5288 | macro_build (&offset_expr, "daddiu", "t,r,j", | |
17a2f251 | 5289 | tempreg, tempreg, BFD_RELOC_HI16_S); |
67c0d1eb RS |
5290 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); |
5291 | macro_build (&offset_expr, "daddiu", "t,r,j", | |
17a2f251 | 5292 | tempreg, tempreg, BFD_RELOC_LO16); |
98d3f06f | 5293 | } |
6caf9ef4 TS |
5294 | |
5295 | if (mips_relax.sequence) | |
5296 | relax_end (); | |
98d3f06f KH |
5297 | } |
5298 | else | |
5299 | { | |
5300 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 5301 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
98d3f06f | 5302 | { |
4d7206a2 | 5303 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5304 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5305 | tempreg, mips_gp_register, BFD_RELOC_GPREL16); | |
4d7206a2 | 5306 | relax_switch (); |
98d3f06f | 5307 | } |
6943caf0 ILT |
5308 | if (!IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
5309 | as_bad (_("offset too large")); | |
67c0d1eb RS |
5310 | macro_build_lui (&offset_expr, tempreg); |
5311 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
5312 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
5313 | if (mips_relax.sequence) |
5314 | relax_end (); | |
98d3f06f | 5315 | } |
252b5132 | 5316 | } |
0a44bf69 | 5317 | else if (!mips_big_got && !HAVE_NEWABI) |
252b5132 | 5318 | { |
9117d219 NC |
5319 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
5320 | ||
252b5132 RH |
5321 | /* If this is a reference to an external symbol, and there |
5322 | is no constant, we want | |
5323 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
1abe91b1 | 5324 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 | 5325 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
252b5132 RH |
5326 | For a local symbol, we want |
5327 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5328 | nop | |
5329 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5330 | ||
5331 | If we have a small constant, and this is a reference to | |
5332 | an external symbol, we want | |
5333 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5334 | nop | |
5335 | addiu $tempreg,$tempreg,<constant> | |
5336 | For a local symbol, we want the same instruction | |
5337 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
5338 | addiu instruction. | |
5339 | ||
5340 | If we have a large constant, and this is a reference to | |
5341 | an external symbol, we want | |
5342 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5343 | lui $at,<hiconstant> | |
5344 | addiu $at,$at,<loconstant> | |
5345 | addu $tempreg,$tempreg,$at | |
5346 | For a local symbol, we want the same instruction | |
5347 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 5348 | addiu instruction. |
ed6fb7bd SC |
5349 | */ |
5350 | ||
4d7206a2 | 5351 | if (offset_expr.X_add_number == 0) |
252b5132 | 5352 | { |
0a44bf69 RS |
5353 | if (mips_pic == SVR4_PIC |
5354 | && breg == 0 | |
5355 | && (call || tempreg == PIC_CALL_REG)) | |
4d7206a2 RS |
5356 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; |
5357 | ||
5358 | relax_start (offset_expr.X_add_symbol); | |
67c0d1eb RS |
5359 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5360 | lw_reloc_type, mips_gp_register); | |
4d7206a2 | 5361 | if (breg != 0) |
252b5132 RH |
5362 | { |
5363 | /* We're going to put in an addu instruction using | |
5364 | tempreg, so we may as well insert the nop right | |
5365 | now. */ | |
269137b2 | 5366 | load_delay_nop (); |
252b5132 | 5367 | } |
4d7206a2 | 5368 | relax_switch (); |
67c0d1eb RS |
5369 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5370 | tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 5371 | load_delay_nop (); |
67c0d1eb RS |
5372 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5373 | tempreg, tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 5374 | relax_end (); |
252b5132 RH |
5375 | /* FIXME: If breg == 0, and the next instruction uses |
5376 | $tempreg, then if this variant case is used an extra | |
5377 | nop will be generated. */ | |
5378 | } | |
4d7206a2 RS |
5379 | else if (offset_expr.X_add_number >= -0x8000 |
5380 | && offset_expr.X_add_number < 0x8000) | |
252b5132 | 5381 | { |
67c0d1eb | 5382 | load_got_offset (tempreg, &offset_expr); |
269137b2 | 5383 | load_delay_nop (); |
67c0d1eb | 5384 | add_got_offset (tempreg, &offset_expr); |
252b5132 RH |
5385 | } |
5386 | else | |
5387 | { | |
4d7206a2 RS |
5388 | expr1.X_add_number = offset_expr.X_add_number; |
5389 | offset_expr.X_add_number = | |
5390 | ((offset_expr.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
67c0d1eb | 5391 | load_got_offset (tempreg, &offset_expr); |
f6a22291 | 5392 | offset_expr.X_add_number = expr1.X_add_number; |
252b5132 RH |
5393 | /* If we are going to add in a base register, and the |
5394 | target register and the base register are the same, | |
5395 | then we are using AT as a temporary register. Since | |
5396 | we want to load the constant into AT, we add our | |
5397 | current AT (from the global offset table) and the | |
5398 | register into the register now, and pretend we were | |
5399 | not using a base register. */ | |
67c0d1eb | 5400 | if (breg == treg) |
252b5132 | 5401 | { |
269137b2 | 5402 | load_delay_nop (); |
67c0d1eb | 5403 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5404 | treg, AT, breg); |
252b5132 RH |
5405 | breg = 0; |
5406 | tempreg = treg; | |
252b5132 | 5407 | } |
f6a22291 | 5408 | add_got_offset_hilo (tempreg, &offset_expr, AT); |
252b5132 RH |
5409 | used_at = 1; |
5410 | } | |
5411 | } | |
0a44bf69 | 5412 | else if (!mips_big_got && HAVE_NEWABI) |
f5040a92 | 5413 | { |
67c0d1eb | 5414 | int add_breg_early = 0; |
f5040a92 AO |
5415 | |
5416 | /* If this is a reference to an external, and there is no | |
5417 | constant, or local symbol (*), with or without a | |
5418 | constant, we want | |
5419 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
1abe91b1 | 5420 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
5421 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) |
5422 | ||
5423 | If we have a small constant, and this is a reference to | |
5424 | an external symbol, we want | |
5425 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5426 | addiu $tempreg,$tempreg,<constant> | |
5427 | ||
5428 | If we have a large constant, and this is a reference to | |
5429 | an external symbol, we want | |
5430 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5431 | lui $at,<hiconstant> | |
5432 | addiu $at,$at,<loconstant> | |
5433 | addu $tempreg,$tempreg,$at | |
5434 | ||
5435 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
5436 | local symbols, even though it introduces an additional | |
5437 | instruction. */ | |
5438 | ||
f5040a92 AO |
5439 | if (offset_expr.X_add_number) |
5440 | { | |
4d7206a2 | 5441 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
5442 | offset_expr.X_add_number = 0; |
5443 | ||
4d7206a2 | 5444 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5445 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5446 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5447 | |
5448 | if (expr1.X_add_number >= -0x8000 | |
5449 | && expr1.X_add_number < 0x8000) | |
5450 | { | |
67c0d1eb RS |
5451 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
5452 | tempreg, tempreg, BFD_RELOC_LO16); | |
f5040a92 | 5453 | } |
ecd13cd3 | 5454 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 AO |
5455 | { |
5456 | int dreg; | |
5457 | ||
5458 | /* If we are going to add in a base register, and the | |
5459 | target register and the base register are the same, | |
5460 | then we are using AT as a temporary register. Since | |
5461 | we want to load the constant into AT, we add our | |
5462 | current AT (from the global offset table) and the | |
5463 | register into the register now, and pretend we were | |
5464 | not using a base register. */ | |
5465 | if (breg != treg) | |
5466 | dreg = tempreg; | |
5467 | else | |
5468 | { | |
5469 | assert (tempreg == AT); | |
67c0d1eb RS |
5470 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
5471 | treg, AT, breg); | |
f5040a92 | 5472 | dreg = treg; |
67c0d1eb | 5473 | add_breg_early = 1; |
f5040a92 AO |
5474 | } |
5475 | ||
f6a22291 | 5476 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 5477 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5478 | dreg, dreg, AT); |
f5040a92 | 5479 | |
f5040a92 AO |
5480 | used_at = 1; |
5481 | } | |
5482 | else | |
5483 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
5484 | ||
4d7206a2 | 5485 | relax_switch (); |
f5040a92 AO |
5486 | offset_expr.X_add_number = expr1.X_add_number; |
5487 | ||
67c0d1eb RS |
5488 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5489 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
5490 | if (add_breg_early) | |
f5040a92 | 5491 | { |
67c0d1eb | 5492 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
f899b4b8 | 5493 | treg, tempreg, breg); |
f5040a92 AO |
5494 | breg = 0; |
5495 | tempreg = treg; | |
5496 | } | |
4d7206a2 | 5497 | relax_end (); |
f5040a92 | 5498 | } |
4d7206a2 | 5499 | else if (breg == 0 && (call || tempreg == PIC_CALL_REG)) |
f5040a92 | 5500 | { |
4d7206a2 | 5501 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5502 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5503 | BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
4d7206a2 | 5504 | relax_switch (); |
67c0d1eb RS |
5505 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5506 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
4d7206a2 | 5507 | relax_end (); |
f5040a92 | 5508 | } |
4d7206a2 | 5509 | else |
f5040a92 | 5510 | { |
67c0d1eb RS |
5511 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5512 | BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
5513 | } |
5514 | } | |
0a44bf69 | 5515 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 5516 | { |
67c0d1eb | 5517 | int gpdelay; |
9117d219 NC |
5518 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
5519 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 5520 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
5521 | |
5522 | /* This is the large GOT case. If this is a reference to an | |
5523 | external symbol, and there is no constant, we want | |
5524 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5525 | addu $tempreg,$tempreg,$gp | |
5526 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 5527 | or for lca or if tempreg is PIC_CALL_REG |
9117d219 NC |
5528 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
5529 | addu $tempreg,$tempreg,$gp | |
5530 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
5531 | For a local symbol, we want |
5532 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5533 | nop | |
5534 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5535 | ||
5536 | If we have a small constant, and this is a reference to | |
5537 | an external symbol, we want | |
5538 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5539 | addu $tempreg,$tempreg,$gp | |
5540 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5541 | nop | |
5542 | addiu $tempreg,$tempreg,<constant> | |
5543 | For a local symbol, we want | |
5544 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5545 | nop | |
5546 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
5547 | ||
5548 | If we have a large constant, and this is a reference to | |
5549 | an external symbol, we want | |
5550 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5551 | addu $tempreg,$tempreg,$gp | |
5552 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5553 | lui $at,<hiconstant> | |
5554 | addiu $at,$at,<loconstant> | |
5555 | addu $tempreg,$tempreg,$at | |
5556 | For a local symbol, we want | |
5557 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5558 | lui $at,<hiconstant> | |
5559 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
5560 | addu $tempreg,$tempreg,$at | |
f5040a92 | 5561 | */ |
438c16b8 | 5562 | |
252b5132 RH |
5563 | expr1.X_add_number = offset_expr.X_add_number; |
5564 | offset_expr.X_add_number = 0; | |
4d7206a2 | 5565 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 5566 | gpdelay = reg_needs_delay (mips_gp_register); |
1abe91b1 MR |
5567 | if (expr1.X_add_number == 0 && breg == 0 |
5568 | && (call || tempreg == PIC_CALL_REG)) | |
9117d219 NC |
5569 | { |
5570 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
5571 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
5572 | } | |
67c0d1eb RS |
5573 | macro_build (&offset_expr, "lui", "t,u", tempreg, lui_reloc_type); |
5574 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 5575 | tempreg, tempreg, mips_gp_register); |
67c0d1eb | 5576 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 5577 | tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
5578 | if (expr1.X_add_number == 0) |
5579 | { | |
67c0d1eb | 5580 | if (breg != 0) |
252b5132 RH |
5581 | { |
5582 | /* We're going to put in an addu instruction using | |
5583 | tempreg, so we may as well insert the nop right | |
5584 | now. */ | |
269137b2 | 5585 | load_delay_nop (); |
252b5132 | 5586 | } |
252b5132 RH |
5587 | } |
5588 | else if (expr1.X_add_number >= -0x8000 | |
5589 | && expr1.X_add_number < 0x8000) | |
5590 | { | |
269137b2 | 5591 | load_delay_nop (); |
67c0d1eb | 5592 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5593 | tempreg, tempreg, BFD_RELOC_LO16); |
252b5132 RH |
5594 | } |
5595 | else | |
5596 | { | |
67c0d1eb | 5597 | int dreg; |
252b5132 RH |
5598 | |
5599 | /* If we are going to add in a base register, and the | |
5600 | target register and the base register are the same, | |
5601 | then we are using AT as a temporary register. Since | |
5602 | we want to load the constant into AT, we add our | |
5603 | current AT (from the global offset table) and the | |
5604 | register into the register now, and pretend we were | |
5605 | not using a base register. */ | |
5606 | if (breg != treg) | |
67c0d1eb | 5607 | dreg = tempreg; |
252b5132 RH |
5608 | else |
5609 | { | |
5610 | assert (tempreg == AT); | |
269137b2 | 5611 | load_delay_nop (); |
67c0d1eb | 5612 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5613 | treg, AT, breg); |
252b5132 | 5614 | dreg = treg; |
252b5132 RH |
5615 | } |
5616 | ||
f6a22291 | 5617 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 5618 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
252b5132 | 5619 | |
252b5132 RH |
5620 | used_at = 1; |
5621 | } | |
4d7206a2 RS |
5622 | offset_expr.X_add_number = |
5623 | ((expr1.X_add_number + 0x8000) & 0xffff) - 0x8000; | |
5624 | relax_switch (); | |
252b5132 | 5625 | |
67c0d1eb | 5626 | if (gpdelay) |
252b5132 RH |
5627 | { |
5628 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 5629 | the first instruction on the main stream does not. */ |
67c0d1eb | 5630 | macro_build (NULL, "nop", ""); |
252b5132 | 5631 | } |
ed6fb7bd | 5632 | |
67c0d1eb RS |
5633 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5634 | local_reloc_type, mips_gp_register); | |
f5040a92 | 5635 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
5636 | && expr1.X_add_number < 0x8000) |
5637 | { | |
269137b2 | 5638 | load_delay_nop (); |
67c0d1eb RS |
5639 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5640 | tempreg, tempreg, BFD_RELOC_LO16); | |
252b5132 | 5641 | /* FIXME: If add_number is 0, and there was no base |
f5040a92 AO |
5642 | register, the external symbol case ended with a load, |
5643 | so if the symbol turns out to not be external, and | |
5644 | the next instruction uses tempreg, an unnecessary nop | |
5645 | will be inserted. */ | |
252b5132 RH |
5646 | } |
5647 | else | |
5648 | { | |
5649 | if (breg == treg) | |
5650 | { | |
5651 | /* We must add in the base register now, as in the | |
f5040a92 | 5652 | external symbol case. */ |
252b5132 | 5653 | assert (tempreg == AT); |
269137b2 | 5654 | load_delay_nop (); |
67c0d1eb | 5655 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5656 | treg, AT, breg); |
252b5132 RH |
5657 | tempreg = treg; |
5658 | /* We set breg to 0 because we have arranged to add | |
f5040a92 | 5659 | it in in both cases. */ |
252b5132 RH |
5660 | breg = 0; |
5661 | } | |
5662 | ||
67c0d1eb RS |
5663 | macro_build_lui (&expr1, AT); |
5664 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
17a2f251 | 5665 | AT, AT, BFD_RELOC_LO16); |
67c0d1eb | 5666 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5667 | tempreg, tempreg, AT); |
8fc2e39e | 5668 | used_at = 1; |
252b5132 | 5669 | } |
4d7206a2 | 5670 | relax_end (); |
252b5132 | 5671 | } |
0a44bf69 | 5672 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 5673 | { |
f5040a92 AO |
5674 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
5675 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
67c0d1eb | 5676 | int add_breg_early = 0; |
f5040a92 AO |
5677 | |
5678 | /* This is the large GOT case. If this is a reference to an | |
5679 | external symbol, and there is no constant, we want | |
5680 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5681 | add $tempreg,$tempreg,$gp | |
5682 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
1abe91b1 | 5683 | or for lca or if tempreg is PIC_CALL_REG |
f5040a92 AO |
5684 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) |
5685 | add $tempreg,$tempreg,$gp | |
5686 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
5687 | ||
5688 | If we have a small constant, and this is a reference to | |
5689 | an external symbol, we want | |
5690 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5691 | add $tempreg,$tempreg,$gp | |
5692 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5693 | addi $tempreg,$tempreg,<constant> | |
5694 | ||
5695 | If we have a large constant, and this is a reference to | |
5696 | an external symbol, we want | |
5697 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5698 | addu $tempreg,$tempreg,$gp | |
5699 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5700 | lui $at,<hiconstant> | |
5701 | addi $at,$at,<loconstant> | |
5702 | add $tempreg,$tempreg,$at | |
5703 | ||
5704 | If we have NewABI, and we know it's a local symbol, we want | |
5705 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
5706 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
5707 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
5708 | ||
4d7206a2 | 5709 | relax_start (offset_expr.X_add_symbol); |
f5040a92 | 5710 | |
4d7206a2 | 5711 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
5712 | offset_expr.X_add_number = 0; |
5713 | ||
1abe91b1 MR |
5714 | if (expr1.X_add_number == 0 && breg == 0 |
5715 | && (call || tempreg == PIC_CALL_REG)) | |
f5040a92 AO |
5716 | { |
5717 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
5718 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
5719 | } | |
67c0d1eb RS |
5720 | macro_build (&offset_expr, "lui", "t,u", tempreg, lui_reloc_type); |
5721 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 5722 | tempreg, tempreg, mips_gp_register); |
67c0d1eb RS |
5723 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5724 | tempreg, lw_reloc_type, tempreg); | |
f5040a92 AO |
5725 | |
5726 | if (expr1.X_add_number == 0) | |
4d7206a2 | 5727 | ; |
f5040a92 AO |
5728 | else if (expr1.X_add_number >= -0x8000 |
5729 | && expr1.X_add_number < 0x8000) | |
5730 | { | |
67c0d1eb | 5731 | macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j", |
17a2f251 | 5732 | tempreg, tempreg, BFD_RELOC_LO16); |
f5040a92 | 5733 | } |
ecd13cd3 | 5734 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number + 0x8000)) |
f5040a92 AO |
5735 | { |
5736 | int dreg; | |
5737 | ||
5738 | /* If we are going to add in a base register, and the | |
5739 | target register and the base register are the same, | |
5740 | then we are using AT as a temporary register. Since | |
5741 | we want to load the constant into AT, we add our | |
5742 | current AT (from the global offset table) and the | |
5743 | register into the register now, and pretend we were | |
5744 | not using a base register. */ | |
5745 | if (breg != treg) | |
5746 | dreg = tempreg; | |
5747 | else | |
5748 | { | |
5749 | assert (tempreg == AT); | |
67c0d1eb | 5750 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5751 | treg, AT, breg); |
f5040a92 | 5752 | dreg = treg; |
67c0d1eb | 5753 | add_breg_early = 1; |
f5040a92 AO |
5754 | } |
5755 | ||
f6a22291 | 5756 | load_register (AT, &expr1, HAVE_64BIT_ADDRESSES); |
67c0d1eb | 5757 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", dreg, dreg, AT); |
f5040a92 | 5758 | |
f5040a92 AO |
5759 | used_at = 1; |
5760 | } | |
5761 | else | |
5762 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
5763 | ||
4d7206a2 | 5764 | relax_switch (); |
f5040a92 | 5765 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
5766 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
5767 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
5768 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, | |
5769 | tempreg, BFD_RELOC_MIPS_GOT_OFST); | |
5770 | if (add_breg_early) | |
f5040a92 | 5771 | { |
67c0d1eb | 5772 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 5773 | treg, tempreg, breg); |
f5040a92 AO |
5774 | breg = 0; |
5775 | tempreg = treg; | |
5776 | } | |
4d7206a2 | 5777 | relax_end (); |
f5040a92 | 5778 | } |
252b5132 RH |
5779 | else |
5780 | abort (); | |
5781 | ||
5782 | if (breg != 0) | |
aed1a261 | 5783 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", treg, tempreg, breg); |
252b5132 RH |
5784 | break; |
5785 | ||
5786 | case M_J_A: | |
5787 | /* The j instruction may not be used in PIC code, since it | |
5788 | requires an absolute address. We convert it to a b | |
5789 | instruction. */ | |
5790 | if (mips_pic == NO_PIC) | |
67c0d1eb | 5791 | macro_build (&offset_expr, "j", "a"); |
252b5132 | 5792 | else |
67c0d1eb | 5793 | macro_build (&offset_expr, "b", "p"); |
8fc2e39e | 5794 | break; |
252b5132 RH |
5795 | |
5796 | /* The jal instructions must be handled as macros because when | |
5797 | generating PIC code they expand to multi-instruction | |
5798 | sequences. Normally they are simple instructions. */ | |
5799 | case M_JAL_1: | |
5800 | dreg = RA; | |
5801 | /* Fall through. */ | |
5802 | case M_JAL_2: | |
3e722fb5 | 5803 | if (mips_pic == NO_PIC) |
67c0d1eb | 5804 | macro_build (NULL, "jalr", "d,s", dreg, sreg); |
0a44bf69 | 5805 | else |
252b5132 RH |
5806 | { |
5807 | if (sreg != PIC_CALL_REG) | |
5808 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 5809 | |
67c0d1eb | 5810 | macro_build (NULL, "jalr", "d,s", dreg, sreg); |
0a44bf69 | 5811 | if (mips_pic == SVR4_PIC && !HAVE_NEWABI) |
252b5132 | 5812 | { |
6478892d TS |
5813 | if (mips_cprestore_offset < 0) |
5814 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5815 | else | |
5816 | { | |
7a621144 DJ |
5817 | if (! mips_frame_reg_valid) |
5818 | { | |
5819 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
5820 | /* Quiet this warning. */ | |
5821 | mips_frame_reg_valid = 1; | |
5822 | } | |
5823 | if (! mips_cprestore_valid) | |
5824 | { | |
5825 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5826 | /* Quiet this warning. */ | |
5827 | mips_cprestore_valid = 1; | |
5828 | } | |
6478892d | 5829 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 5830 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 5831 | mips_gp_register, |
256ab948 TS |
5832 | mips_frame_reg, |
5833 | HAVE_64BIT_ADDRESSES); | |
6478892d | 5834 | } |
252b5132 RH |
5835 | } |
5836 | } | |
252b5132 | 5837 | |
8fc2e39e | 5838 | break; |
252b5132 RH |
5839 | |
5840 | case M_JAL_A: | |
5841 | if (mips_pic == NO_PIC) | |
67c0d1eb | 5842 | macro_build (&offset_expr, "jal", "a"); |
252b5132 RH |
5843 | else if (mips_pic == SVR4_PIC) |
5844 | { | |
5845 | /* If this is a reference to an external symbol, and we are | |
5846 | using a small GOT, we want | |
5847 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
5848 | nop | |
f9419b05 | 5849 | jalr $ra,$25 |
252b5132 RH |
5850 | nop |
5851 | lw $gp,cprestore($sp) | |
5852 | The cprestore value is set using the .cprestore | |
5853 | pseudo-op. If we are using a big GOT, we want | |
5854 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
5855 | addu $25,$25,$gp | |
5856 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
5857 | nop | |
f9419b05 | 5858 | jalr $ra,$25 |
252b5132 RH |
5859 | nop |
5860 | lw $gp,cprestore($sp) | |
5861 | If the symbol is not external, we want | |
5862 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5863 | nop | |
5864 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 5865 | jalr $ra,$25 |
252b5132 | 5866 | nop |
438c16b8 | 5867 | lw $gp,cprestore($sp) |
f5040a92 AO |
5868 | |
5869 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
5870 | sequences above, minus nops, unless the symbol is local, | |
5871 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
5872 | GOT_DISP. */ | |
438c16b8 | 5873 | if (HAVE_NEWABI) |
252b5132 | 5874 | { |
f5040a92 AO |
5875 | if (! mips_big_got) |
5876 | { | |
4d7206a2 | 5877 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5878 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5879 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
f5040a92 | 5880 | mips_gp_register); |
4d7206a2 | 5881 | relax_switch (); |
67c0d1eb RS |
5882 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5883 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_DISP, | |
4d7206a2 RS |
5884 | mips_gp_register); |
5885 | relax_end (); | |
f5040a92 AO |
5886 | } |
5887 | else | |
5888 | { | |
4d7206a2 | 5889 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
5890 | macro_build (&offset_expr, "lui", "t,u", PIC_CALL_REG, |
5891 | BFD_RELOC_MIPS_CALL_HI16); | |
5892 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
5893 | PIC_CALL_REG, mips_gp_register); | |
5894 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
5895 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
5896 | PIC_CALL_REG); | |
4d7206a2 | 5897 | relax_switch (); |
67c0d1eb RS |
5898 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5899 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT_PAGE, | |
5900 | mips_gp_register); | |
5901 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", | |
5902 | PIC_CALL_REG, PIC_CALL_REG, | |
17a2f251 | 5903 | BFD_RELOC_MIPS_GOT_OFST); |
4d7206a2 | 5904 | relax_end (); |
f5040a92 | 5905 | } |
684022ea | 5906 | |
67c0d1eb | 5907 | macro_build_jalr (&offset_expr); |
252b5132 RH |
5908 | } |
5909 | else | |
5910 | { | |
4d7206a2 | 5911 | relax_start (offset_expr.X_add_symbol); |
438c16b8 TS |
5912 | if (! mips_big_got) |
5913 | { | |
67c0d1eb RS |
5914 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5915 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL16, | |
17a2f251 | 5916 | mips_gp_register); |
269137b2 | 5917 | load_delay_nop (); |
4d7206a2 | 5918 | relax_switch (); |
438c16b8 | 5919 | } |
252b5132 | 5920 | else |
252b5132 | 5921 | { |
67c0d1eb RS |
5922 | int gpdelay; |
5923 | ||
5924 | gpdelay = reg_needs_delay (mips_gp_register); | |
5925 | macro_build (&offset_expr, "lui", "t,u", PIC_CALL_REG, | |
5926 | BFD_RELOC_MIPS_CALL_HI16); | |
5927 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", PIC_CALL_REG, | |
5928 | PIC_CALL_REG, mips_gp_register); | |
5929 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", | |
5930 | PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16, | |
5931 | PIC_CALL_REG); | |
269137b2 | 5932 | load_delay_nop (); |
4d7206a2 | 5933 | relax_switch (); |
67c0d1eb RS |
5934 | if (gpdelay) |
5935 | macro_build (NULL, "nop", ""); | |
252b5132 | 5936 | } |
67c0d1eb RS |
5937 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
5938 | PIC_CALL_REG, BFD_RELOC_MIPS_GOT16, | |
4d7206a2 | 5939 | mips_gp_register); |
269137b2 | 5940 | load_delay_nop (); |
67c0d1eb RS |
5941 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", |
5942 | PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16); | |
4d7206a2 | 5943 | relax_end (); |
67c0d1eb | 5944 | macro_build_jalr (&offset_expr); |
438c16b8 | 5945 | |
6478892d TS |
5946 | if (mips_cprestore_offset < 0) |
5947 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5948 | else | |
5949 | { | |
7a621144 DJ |
5950 | if (! mips_frame_reg_valid) |
5951 | { | |
5952 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
5953 | /* Quiet this warning. */ | |
5954 | mips_frame_reg_valid = 1; | |
5955 | } | |
5956 | if (! mips_cprestore_valid) | |
5957 | { | |
5958 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5959 | /* Quiet this warning. */ | |
5960 | mips_cprestore_valid = 1; | |
5961 | } | |
6478892d | 5962 | if (mips_opts.noreorder) |
67c0d1eb | 5963 | macro_build (NULL, "nop", ""); |
6478892d | 5964 | expr1.X_add_number = mips_cprestore_offset; |
67c0d1eb | 5965 | macro_build_ldst_constoffset (&expr1, ADDRESS_LOAD_INSN, |
f899b4b8 | 5966 | mips_gp_register, |
256ab948 TS |
5967 | mips_frame_reg, |
5968 | HAVE_64BIT_ADDRESSES); | |
6478892d | 5969 | } |
252b5132 RH |
5970 | } |
5971 | } | |
0a44bf69 RS |
5972 | else if (mips_pic == VXWORKS_PIC) |
5973 | as_bad (_("Non-PIC jump used in PIC library")); | |
252b5132 RH |
5974 | else |
5975 | abort (); | |
5976 | ||
8fc2e39e | 5977 | break; |
252b5132 RH |
5978 | |
5979 | case M_LB_AB: | |
5980 | s = "lb"; | |
5981 | goto ld; | |
5982 | case M_LBU_AB: | |
5983 | s = "lbu"; | |
5984 | goto ld; | |
5985 | case M_LH_AB: | |
5986 | s = "lh"; | |
5987 | goto ld; | |
5988 | case M_LHU_AB: | |
5989 | s = "lhu"; | |
5990 | goto ld; | |
5991 | case M_LW_AB: | |
5992 | s = "lw"; | |
5993 | goto ld; | |
5994 | case M_LWC0_AB: | |
5995 | s = "lwc0"; | |
bdaaa2e1 | 5996 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5997 | coproc = 1; |
5998 | goto ld; | |
5999 | case M_LWC1_AB: | |
6000 | s = "lwc1"; | |
bdaaa2e1 | 6001 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6002 | coproc = 1; |
6003 | goto ld; | |
6004 | case M_LWC2_AB: | |
6005 | s = "lwc2"; | |
bdaaa2e1 | 6006 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6007 | coproc = 1; |
6008 | goto ld; | |
6009 | case M_LWC3_AB: | |
6010 | s = "lwc3"; | |
bdaaa2e1 | 6011 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6012 | coproc = 1; |
6013 | goto ld; | |
6014 | case M_LWL_AB: | |
6015 | s = "lwl"; | |
6016 | lr = 1; | |
6017 | goto ld; | |
6018 | case M_LWR_AB: | |
6019 | s = "lwr"; | |
6020 | lr = 1; | |
6021 | goto ld; | |
6022 | case M_LDC1_AB: | |
fef14a42 | 6023 | if (mips_opts.arch == CPU_R4650) |
252b5132 RH |
6024 | { |
6025 | as_bad (_("opcode not supported on this processor")); | |
8fc2e39e | 6026 | break; |
252b5132 RH |
6027 | } |
6028 | s = "ldc1"; | |
bdaaa2e1 | 6029 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6030 | coproc = 1; |
6031 | goto ld; | |
6032 | case M_LDC2_AB: | |
6033 | s = "ldc2"; | |
bdaaa2e1 | 6034 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6035 | coproc = 1; |
6036 | goto ld; | |
6037 | case M_LDC3_AB: | |
6038 | s = "ldc3"; | |
bdaaa2e1 | 6039 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6040 | coproc = 1; |
6041 | goto ld; | |
6042 | case M_LDL_AB: | |
6043 | s = "ldl"; | |
6044 | lr = 1; | |
6045 | goto ld; | |
6046 | case M_LDR_AB: | |
6047 | s = "ldr"; | |
6048 | lr = 1; | |
6049 | goto ld; | |
6050 | case M_LL_AB: | |
6051 | s = "ll"; | |
6052 | goto ld; | |
6053 | case M_LLD_AB: | |
6054 | s = "lld"; | |
6055 | goto ld; | |
6056 | case M_LWU_AB: | |
6057 | s = "lwu"; | |
6058 | ld: | |
8fc2e39e | 6059 | if (breg == treg || coproc || lr) |
252b5132 RH |
6060 | { |
6061 | tempreg = AT; | |
6062 | used_at = 1; | |
6063 | } | |
6064 | else | |
6065 | { | |
6066 | tempreg = treg; | |
252b5132 RH |
6067 | } |
6068 | goto ld_st; | |
6069 | case M_SB_AB: | |
6070 | s = "sb"; | |
6071 | goto st; | |
6072 | case M_SH_AB: | |
6073 | s = "sh"; | |
6074 | goto st; | |
6075 | case M_SW_AB: | |
6076 | s = "sw"; | |
6077 | goto st; | |
6078 | case M_SWC0_AB: | |
6079 | s = "swc0"; | |
bdaaa2e1 | 6080 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6081 | coproc = 1; |
6082 | goto st; | |
6083 | case M_SWC1_AB: | |
6084 | s = "swc1"; | |
bdaaa2e1 | 6085 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6086 | coproc = 1; |
6087 | goto st; | |
6088 | case M_SWC2_AB: | |
6089 | s = "swc2"; | |
bdaaa2e1 | 6090 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6091 | coproc = 1; |
6092 | goto st; | |
6093 | case M_SWC3_AB: | |
6094 | s = "swc3"; | |
bdaaa2e1 | 6095 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6096 | coproc = 1; |
6097 | goto st; | |
6098 | case M_SWL_AB: | |
6099 | s = "swl"; | |
6100 | goto st; | |
6101 | case M_SWR_AB: | |
6102 | s = "swr"; | |
6103 | goto st; | |
6104 | case M_SC_AB: | |
6105 | s = "sc"; | |
6106 | goto st; | |
6107 | case M_SCD_AB: | |
6108 | s = "scd"; | |
6109 | goto st; | |
d43b4baf TS |
6110 | case M_CACHE_AB: |
6111 | s = "cache"; | |
6112 | goto st; | |
252b5132 | 6113 | case M_SDC1_AB: |
fef14a42 | 6114 | if (mips_opts.arch == CPU_R4650) |
252b5132 RH |
6115 | { |
6116 | as_bad (_("opcode not supported on this processor")); | |
8fc2e39e | 6117 | break; |
252b5132 RH |
6118 | } |
6119 | s = "sdc1"; | |
6120 | coproc = 1; | |
bdaaa2e1 | 6121 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6122 | goto st; |
6123 | case M_SDC2_AB: | |
6124 | s = "sdc2"; | |
bdaaa2e1 | 6125 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6126 | coproc = 1; |
6127 | goto st; | |
6128 | case M_SDC3_AB: | |
6129 | s = "sdc3"; | |
bdaaa2e1 | 6130 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6131 | coproc = 1; |
6132 | goto st; | |
6133 | case M_SDL_AB: | |
6134 | s = "sdl"; | |
6135 | goto st; | |
6136 | case M_SDR_AB: | |
6137 | s = "sdr"; | |
6138 | st: | |
8fc2e39e TS |
6139 | tempreg = AT; |
6140 | used_at = 1; | |
252b5132 | 6141 | ld_st: |
bdaaa2e1 | 6142 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6143 | if (mask == M_LWC1_AB |
6144 | || mask == M_SWC1_AB | |
6145 | || mask == M_LDC1_AB | |
6146 | || mask == M_SDC1_AB | |
6147 | || mask == M_L_DAB | |
6148 | || mask == M_S_DAB) | |
6149 | fmt = "T,o(b)"; | |
d43b4baf TS |
6150 | else if (mask == M_CACHE_AB) |
6151 | fmt = "k,o(b)"; | |
252b5132 RH |
6152 | else if (coproc) |
6153 | fmt = "E,o(b)"; | |
6154 | else | |
6155 | fmt = "t,o(b)"; | |
6156 | ||
6157 | if (offset_expr.X_op != O_constant | |
6158 | && offset_expr.X_op != O_symbol) | |
6159 | { | |
6160 | as_bad (_("expression too complex")); | |
6161 | offset_expr.X_op = O_constant; | |
6162 | } | |
6163 | ||
2051e8c4 MR |
6164 | if (HAVE_32BIT_ADDRESSES |
6165 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
6166 | { |
6167 | char value [32]; | |
6168 | ||
6169 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 6170 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 6171 | } |
2051e8c4 | 6172 | |
252b5132 RH |
6173 | /* A constant expression in PIC code can be handled just as it |
6174 | is in non PIC code. */ | |
aed1a261 RS |
6175 | if (offset_expr.X_op == O_constant) |
6176 | { | |
aed1a261 RS |
6177 | expr1.X_add_number = ((offset_expr.X_add_number + 0x8000) |
6178 | & ~(bfd_vma) 0xffff); | |
2051e8c4 | 6179 | normalize_address_expr (&expr1); |
aed1a261 RS |
6180 | load_register (tempreg, &expr1, HAVE_64BIT_ADDRESSES); |
6181 | if (breg != 0) | |
6182 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
6183 | tempreg, tempreg, breg); | |
6184 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, tempreg); | |
6185 | } | |
6186 | else if (mips_pic == NO_PIC) | |
252b5132 RH |
6187 | { |
6188 | /* If this is a reference to a GP relative symbol, and there | |
6189 | is no base register, we want | |
cdf6fd85 | 6190 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
6191 | Otherwise, if there is no base register, we want |
6192 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6193 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6194 | If we have a constant, we need two instructions anyhow, | |
6195 | so we always use the latter form. | |
6196 | ||
6197 | If we have a base register, and this is a reference to a | |
6198 | GP relative symbol, we want | |
6199 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 6200 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
6201 | Otherwise we want |
6202 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6203 | addu $tempreg,$tempreg,$breg | |
6204 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 6205 | With a constant we always use the latter case. |
76b3015f | 6206 | |
d6bc6245 TS |
6207 | With 64bit address space and no base register and $at usable, |
6208 | we want | |
6209 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6210 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6211 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6212 | dsll32 $tempreg,0 | |
6213 | daddu $tempreg,$at | |
6214 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6215 | If we have a base register, we want | |
6216 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6217 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6218 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6219 | daddu $at,$breg | |
6220 | dsll32 $tempreg,0 | |
6221 | daddu $tempreg,$at | |
6222 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6223 | ||
6224 | Without $at we can't generate the optimal path for superscalar | |
6225 | processors here since this would require two temporary registers. | |
6226 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6227 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6228 | dsll $tempreg,16 | |
6229 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6230 | dsll $tempreg,16 | |
6231 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6232 | If we have a base register, we want | |
6233 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6234 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6235 | dsll $tempreg,16 | |
6236 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6237 | dsll $tempreg,16 | |
6238 | daddu $tempreg,$tempreg,$breg | |
6239 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 | 6240 | |
6caf9ef4 | 6241 | For GP relative symbols in 64bit address space we can use |
aed1a261 RS |
6242 | the same sequence as in 32bit address space. */ |
6243 | if (HAVE_64BIT_SYMBOLS) | |
d6bc6245 | 6244 | { |
aed1a261 | 6245 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 TS |
6246 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
6247 | { | |
6248 | relax_start (offset_expr.X_add_symbol); | |
6249 | if (breg == 0) | |
6250 | { | |
6251 | macro_build (&offset_expr, s, fmt, treg, | |
6252 | BFD_RELOC_GPREL16, mips_gp_register); | |
6253 | } | |
6254 | else | |
6255 | { | |
6256 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
6257 | tempreg, breg, mips_gp_register); | |
6258 | macro_build (&offset_expr, s, fmt, treg, | |
6259 | BFD_RELOC_GPREL16, tempreg); | |
6260 | } | |
6261 | relax_switch (); | |
6262 | } | |
d6bc6245 | 6263 | |
b8285c27 | 6264 | if (used_at == 0 && !mips_opts.noat) |
d6bc6245 | 6265 | { |
67c0d1eb RS |
6266 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
6267 | BFD_RELOC_MIPS_HIGHEST); | |
6268 | macro_build (&offset_expr, "lui", "t,u", AT, | |
6269 | BFD_RELOC_HI16_S); | |
6270 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6271 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
d6bc6245 | 6272 | if (breg != 0) |
67c0d1eb RS |
6273 | macro_build (NULL, "daddu", "d,v,t", AT, AT, breg); |
6274 | macro_build (NULL, "dsll32", "d,w,<", tempreg, tempreg, 0); | |
6275 | macro_build (NULL, "daddu", "d,v,t", tempreg, tempreg, AT); | |
6276 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_LO16, | |
6277 | tempreg); | |
d6bc6245 TS |
6278 | used_at = 1; |
6279 | } | |
6280 | else | |
6281 | { | |
67c0d1eb RS |
6282 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
6283 | BFD_RELOC_MIPS_HIGHEST); | |
6284 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6285 | tempreg, BFD_RELOC_MIPS_HIGHER); | |
6286 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); | |
6287 | macro_build (&offset_expr, "daddiu", "t,r,j", tempreg, | |
6288 | tempreg, BFD_RELOC_HI16_S); | |
6289 | macro_build (NULL, "dsll", "d,w,<", tempreg, tempreg, 16); | |
d6bc6245 | 6290 | if (breg != 0) |
67c0d1eb | 6291 | macro_build (NULL, "daddu", "d,v,t", |
17a2f251 | 6292 | tempreg, tempreg, breg); |
67c0d1eb | 6293 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6294 | BFD_RELOC_LO16, tempreg); |
d6bc6245 | 6295 | } |
6caf9ef4 TS |
6296 | |
6297 | if (mips_relax.sequence) | |
6298 | relax_end (); | |
8fc2e39e | 6299 | break; |
d6bc6245 | 6300 | } |
256ab948 | 6301 | |
252b5132 RH |
6302 | if (breg == 0) |
6303 | { | |
67c0d1eb | 6304 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 6305 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 6306 | { |
4d7206a2 | 6307 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6308 | macro_build (&offset_expr, s, fmt, treg, BFD_RELOC_GPREL16, |
6309 | mips_gp_register); | |
4d7206a2 | 6310 | relax_switch (); |
252b5132 | 6311 | } |
67c0d1eb RS |
6312 | macro_build_lui (&offset_expr, tempreg); |
6313 | macro_build (&offset_expr, s, fmt, treg, | |
17a2f251 | 6314 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
6315 | if (mips_relax.sequence) |
6316 | relax_end (); | |
252b5132 RH |
6317 | } |
6318 | else | |
6319 | { | |
67c0d1eb | 6320 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET |
6caf9ef4 | 6321 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 6322 | { |
4d7206a2 | 6323 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6324 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6325 | tempreg, breg, mips_gp_register); |
67c0d1eb | 6326 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6327 | BFD_RELOC_GPREL16, tempreg); |
4d7206a2 | 6328 | relax_switch (); |
252b5132 | 6329 | } |
67c0d1eb RS |
6330 | macro_build_lui (&offset_expr, tempreg); |
6331 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 6332 | tempreg, tempreg, breg); |
67c0d1eb | 6333 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6334 | BFD_RELOC_LO16, tempreg); |
4d7206a2 RS |
6335 | if (mips_relax.sequence) |
6336 | relax_end (); | |
252b5132 RH |
6337 | } |
6338 | } | |
0a44bf69 | 6339 | else if (!mips_big_got) |
252b5132 | 6340 | { |
ed6fb7bd | 6341 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 6342 | |
252b5132 RH |
6343 | /* If this is a reference to an external symbol, we want |
6344 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6345 | nop | |
6346 | <op> $treg,0($tempreg) | |
6347 | Otherwise we want | |
6348 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6349 | nop | |
6350 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6351 | <op> $treg,0($tempreg) | |
f5040a92 AO |
6352 | |
6353 | For NewABI, we want | |
6354 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6355 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) | |
6356 | ||
252b5132 RH |
6357 | If there is a base register, we add it to $tempreg before |
6358 | the <op>. If there is a constant, we stick it in the | |
6359 | <op> instruction. We don't handle constants larger than | |
6360 | 16 bits, because we have no way to load the upper 16 bits | |
6361 | (actually, we could handle them for the subset of cases | |
6362 | in which we are not using $at). */ | |
6363 | assert (offset_expr.X_op == O_symbol); | |
f5040a92 AO |
6364 | if (HAVE_NEWABI) |
6365 | { | |
67c0d1eb RS |
6366 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6367 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 6368 | if (breg != 0) |
67c0d1eb | 6369 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6370 | tempreg, tempreg, breg); |
67c0d1eb | 6371 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6372 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
f5040a92 AO |
6373 | break; |
6374 | } | |
252b5132 RH |
6375 | expr1.X_add_number = offset_expr.X_add_number; |
6376 | offset_expr.X_add_number = 0; | |
6377 | if (expr1.X_add_number < -0x8000 | |
6378 | || expr1.X_add_number >= 0x8000) | |
6379 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb RS |
6380 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6381 | lw_reloc_type, mips_gp_register); | |
269137b2 | 6382 | load_delay_nop (); |
4d7206a2 RS |
6383 | relax_start (offset_expr.X_add_symbol); |
6384 | relax_switch (); | |
67c0d1eb RS |
6385 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
6386 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 | 6387 | relax_end (); |
252b5132 | 6388 | if (breg != 0) |
67c0d1eb | 6389 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6390 | tempreg, tempreg, breg); |
67c0d1eb | 6391 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 6392 | } |
0a44bf69 | 6393 | else if (mips_big_got && !HAVE_NEWABI) |
252b5132 | 6394 | { |
67c0d1eb | 6395 | int gpdelay; |
252b5132 RH |
6396 | |
6397 | /* If this is a reference to an external symbol, we want | |
6398 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6399 | addu $tempreg,$tempreg,$gp | |
6400 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6401 | <op> $treg,0($tempreg) | |
6402 | Otherwise we want | |
6403 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6404 | nop | |
6405 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6406 | <op> $treg,0($tempreg) | |
6407 | If there is a base register, we add it to $tempreg before | |
6408 | the <op>. If there is a constant, we stick it in the | |
6409 | <op> instruction. We don't handle constants larger than | |
6410 | 16 bits, because we have no way to load the upper 16 bits | |
6411 | (actually, we could handle them for the subset of cases | |
f5040a92 | 6412 | in which we are not using $at). */ |
252b5132 RH |
6413 | assert (offset_expr.X_op == O_symbol); |
6414 | expr1.X_add_number = offset_expr.X_add_number; | |
6415 | offset_expr.X_add_number = 0; | |
6416 | if (expr1.X_add_number < -0x8000 | |
6417 | || expr1.X_add_number >= 0x8000) | |
6418 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 6419 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 6420 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6421 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
17a2f251 | 6422 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
6423 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
6424 | mips_gp_register); | |
6425 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6426 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
4d7206a2 | 6427 | relax_switch (); |
67c0d1eb RS |
6428 | if (gpdelay) |
6429 | macro_build (NULL, "nop", ""); | |
6430 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6431 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 6432 | load_delay_nop (); |
67c0d1eb RS |
6433 | macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg, |
6434 | tempreg, BFD_RELOC_LO16); | |
4d7206a2 RS |
6435 | relax_end (); |
6436 | ||
252b5132 | 6437 | if (breg != 0) |
67c0d1eb | 6438 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6439 | tempreg, tempreg, breg); |
67c0d1eb | 6440 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
252b5132 | 6441 | } |
0a44bf69 | 6442 | else if (mips_big_got && HAVE_NEWABI) |
f5040a92 | 6443 | { |
f5040a92 AO |
6444 | /* If this is a reference to an external symbol, we want |
6445 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6446 | add $tempreg,$tempreg,$gp | |
6447 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6448 | <op> $treg,<ofst>($tempreg) | |
6449 | Otherwise, for local symbols, we want: | |
6450 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6451 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ | |
6452 | assert (offset_expr.X_op == O_symbol); | |
4d7206a2 | 6453 | expr1.X_add_number = offset_expr.X_add_number; |
f5040a92 AO |
6454 | offset_expr.X_add_number = 0; |
6455 | if (expr1.X_add_number < -0x8000 | |
6456 | || expr1.X_add_number >= 0x8000) | |
6457 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4d7206a2 | 6458 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb | 6459 | macro_build (&offset_expr, "lui", "t,u", tempreg, |
17a2f251 | 6460 | BFD_RELOC_MIPS_GOT_HI16); |
67c0d1eb RS |
6461 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", tempreg, tempreg, |
6462 | mips_gp_register); | |
6463 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, | |
6464 | BFD_RELOC_MIPS_GOT_LO16, tempreg); | |
f5040a92 | 6465 | if (breg != 0) |
67c0d1eb | 6466 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6467 | tempreg, tempreg, breg); |
67c0d1eb | 6468 | macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg); |
684022ea | 6469 | |
4d7206a2 | 6470 | relax_switch (); |
f5040a92 | 6471 | offset_expr.X_add_number = expr1.X_add_number; |
67c0d1eb RS |
6472 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg, |
6473 | BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 | 6474 | if (breg != 0) |
67c0d1eb | 6475 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6476 | tempreg, tempreg, breg); |
67c0d1eb | 6477 | macro_build (&offset_expr, s, fmt, treg, |
17a2f251 | 6478 | BFD_RELOC_MIPS_GOT_OFST, tempreg); |
4d7206a2 | 6479 | relax_end (); |
f5040a92 | 6480 | } |
252b5132 RH |
6481 | else |
6482 | abort (); | |
6483 | ||
252b5132 RH |
6484 | break; |
6485 | ||
6486 | case M_LI: | |
6487 | case M_LI_S: | |
67c0d1eb | 6488 | load_register (treg, &imm_expr, 0); |
8fc2e39e | 6489 | break; |
252b5132 RH |
6490 | |
6491 | case M_DLI: | |
67c0d1eb | 6492 | load_register (treg, &imm_expr, 1); |
8fc2e39e | 6493 | break; |
252b5132 RH |
6494 | |
6495 | case M_LI_SS: | |
6496 | if (imm_expr.X_op == O_constant) | |
6497 | { | |
8fc2e39e | 6498 | used_at = 1; |
67c0d1eb RS |
6499 | load_register (AT, &imm_expr, 0); |
6500 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
6501 | break; |
6502 | } | |
6503 | else | |
6504 | { | |
6505 | assert (offset_expr.X_op == O_symbol | |
6506 | && strcmp (segment_name (S_GET_SEGMENT | |
6507 | (offset_expr.X_add_symbol)), | |
6508 | ".lit4") == 0 | |
6509 | && offset_expr.X_add_number == 0); | |
67c0d1eb | 6510 | macro_build (&offset_expr, "lwc1", "T,o(b)", treg, |
17a2f251 | 6511 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 6512 | break; |
252b5132 RH |
6513 | } |
6514 | ||
6515 | case M_LI_D: | |
ca4e0257 RS |
6516 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
6517 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
6518 | order 32 bits of the value and the low order 32 bits are either | |
6519 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
6520 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6521 | { | |
ca4e0257 | 6522 | if (HAVE_64BIT_GPRS) |
67c0d1eb | 6523 | load_register (treg, &imm_expr, 1); |
252b5132 RH |
6524 | else |
6525 | { | |
6526 | int hreg, lreg; | |
6527 | ||
6528 | if (target_big_endian) | |
6529 | { | |
6530 | hreg = treg; | |
6531 | lreg = treg + 1; | |
6532 | } | |
6533 | else | |
6534 | { | |
6535 | hreg = treg + 1; | |
6536 | lreg = treg; | |
6537 | } | |
6538 | ||
6539 | if (hreg <= 31) | |
67c0d1eb | 6540 | load_register (hreg, &imm_expr, 0); |
252b5132 RH |
6541 | if (lreg <= 31) |
6542 | { | |
6543 | if (offset_expr.X_op == O_absent) | |
67c0d1eb | 6544 | move_register (lreg, 0); |
252b5132 RH |
6545 | else |
6546 | { | |
6547 | assert (offset_expr.X_op == O_constant); | |
67c0d1eb | 6548 | load_register (lreg, &offset_expr, 0); |
252b5132 RH |
6549 | } |
6550 | } | |
6551 | } | |
8fc2e39e | 6552 | break; |
252b5132 RH |
6553 | } |
6554 | ||
6555 | /* We know that sym is in the .rdata section. First we get the | |
6556 | upper 16 bits of the address. */ | |
6557 | if (mips_pic == NO_PIC) | |
6558 | { | |
67c0d1eb | 6559 | macro_build_lui (&offset_expr, AT); |
8fc2e39e | 6560 | used_at = 1; |
252b5132 | 6561 | } |
0a44bf69 | 6562 | else |
252b5132 | 6563 | { |
67c0d1eb RS |
6564 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
6565 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
8fc2e39e | 6566 | used_at = 1; |
252b5132 | 6567 | } |
bdaaa2e1 | 6568 | |
252b5132 | 6569 | /* Now we load the register(s). */ |
ca4e0257 | 6570 | if (HAVE_64BIT_GPRS) |
8fc2e39e TS |
6571 | { |
6572 | used_at = 1; | |
6573 | macro_build (&offset_expr, "ld", "t,o(b)", treg, BFD_RELOC_LO16, AT); | |
6574 | } | |
252b5132 RH |
6575 | else |
6576 | { | |
8fc2e39e | 6577 | used_at = 1; |
67c0d1eb | 6578 | macro_build (&offset_expr, "lw", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
f9419b05 | 6579 | if (treg != RA) |
252b5132 RH |
6580 | { |
6581 | /* FIXME: How in the world do we deal with the possible | |
6582 | overflow here? */ | |
6583 | offset_expr.X_add_number += 4; | |
67c0d1eb | 6584 | macro_build (&offset_expr, "lw", "t,o(b)", |
17a2f251 | 6585 | treg + 1, BFD_RELOC_LO16, AT); |
252b5132 RH |
6586 | } |
6587 | } | |
252b5132 RH |
6588 | break; |
6589 | ||
6590 | case M_LI_DD: | |
ca4e0257 RS |
6591 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
6592 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
6593 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
6594 | the value and the low order 32 bits are either zero or in | |
6595 | OFFSET_EXPR. */ | |
252b5132 RH |
6596 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6597 | { | |
8fc2e39e | 6598 | used_at = 1; |
67c0d1eb | 6599 | load_register (AT, &imm_expr, HAVE_64BIT_FPRS); |
ca4e0257 RS |
6600 | if (HAVE_64BIT_FPRS) |
6601 | { | |
6602 | assert (HAVE_64BIT_GPRS); | |
67c0d1eb | 6603 | macro_build (NULL, "dmtc1", "t,S", AT, treg); |
ca4e0257 | 6604 | } |
252b5132 RH |
6605 | else |
6606 | { | |
67c0d1eb | 6607 | macro_build (NULL, "mtc1", "t,G", AT, treg + 1); |
252b5132 | 6608 | if (offset_expr.X_op == O_absent) |
67c0d1eb | 6609 | macro_build (NULL, "mtc1", "t,G", 0, treg); |
252b5132 RH |
6610 | else |
6611 | { | |
6612 | assert (offset_expr.X_op == O_constant); | |
67c0d1eb RS |
6613 | load_register (AT, &offset_expr, 0); |
6614 | macro_build (NULL, "mtc1", "t,G", AT, treg); | |
252b5132 RH |
6615 | } |
6616 | } | |
6617 | break; | |
6618 | } | |
6619 | ||
6620 | assert (offset_expr.X_op == O_symbol | |
6621 | && offset_expr.X_add_number == 0); | |
6622 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); | |
6623 | if (strcmp (s, ".lit8") == 0) | |
6624 | { | |
e7af610e | 6625 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 | 6626 | { |
67c0d1eb | 6627 | macro_build (&offset_expr, "ldc1", "T,o(b)", treg, |
17a2f251 | 6628 | BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
8fc2e39e | 6629 | break; |
252b5132 | 6630 | } |
c9914766 | 6631 | breg = mips_gp_register; |
252b5132 RH |
6632 | r = BFD_RELOC_MIPS_LITERAL; |
6633 | goto dob; | |
6634 | } | |
6635 | else | |
6636 | { | |
6637 | assert (strcmp (s, RDATA_SECTION_NAME) == 0); | |
8fc2e39e | 6638 | used_at = 1; |
0a44bf69 | 6639 | if (mips_pic != NO_PIC) |
67c0d1eb RS |
6640 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, |
6641 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
6642 | else |
6643 | { | |
6644 | /* FIXME: This won't work for a 64 bit address. */ | |
67c0d1eb | 6645 | macro_build_lui (&offset_expr, AT); |
252b5132 | 6646 | } |
bdaaa2e1 | 6647 | |
e7af610e | 6648 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 | 6649 | { |
67c0d1eb RS |
6650 | macro_build (&offset_expr, "ldc1", "T,o(b)", |
6651 | treg, BFD_RELOC_LO16, AT); | |
252b5132 RH |
6652 | break; |
6653 | } | |
6654 | breg = AT; | |
6655 | r = BFD_RELOC_LO16; | |
6656 | goto dob; | |
6657 | } | |
6658 | ||
6659 | case M_L_DOB: | |
fef14a42 | 6660 | if (mips_opts.arch == CPU_R4650) |
252b5132 RH |
6661 | { |
6662 | as_bad (_("opcode not supported on this processor")); | |
8fc2e39e | 6663 | break; |
252b5132 RH |
6664 | } |
6665 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
6666 | to adjust when loading from memory. */ | |
6667 | r = BFD_RELOC_LO16; | |
6668 | dob: | |
e7af610e | 6669 | assert (mips_opts.isa == ISA_MIPS1); |
67c0d1eb | 6670 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 6671 | target_big_endian ? treg + 1 : treg, r, breg); |
252b5132 RH |
6672 | /* FIXME: A possible overflow which I don't know how to deal |
6673 | with. */ | |
6674 | offset_expr.X_add_number += 4; | |
67c0d1eb | 6675 | macro_build (&offset_expr, "lwc1", "T,o(b)", |
17a2f251 | 6676 | target_big_endian ? treg : treg + 1, r, breg); |
252b5132 RH |
6677 | break; |
6678 | ||
6679 | case M_L_DAB: | |
6680 | /* | |
6681 | * The MIPS assembler seems to check for X_add_number not | |
6682 | * being double aligned and generating: | |
6683 | * lui at,%hi(foo+1) | |
6684 | * addu at,at,v1 | |
6685 | * addiu at,at,%lo(foo+1) | |
6686 | * lwc1 f2,0(at) | |
6687 | * lwc1 f3,4(at) | |
6688 | * But, the resulting address is the same after relocation so why | |
6689 | * generate the extra instruction? | |
6690 | */ | |
fef14a42 | 6691 | if (mips_opts.arch == CPU_R4650) |
252b5132 RH |
6692 | { |
6693 | as_bad (_("opcode not supported on this processor")); | |
8fc2e39e | 6694 | break; |
252b5132 | 6695 | } |
bdaaa2e1 | 6696 | /* Itbl support may require additional care here. */ |
252b5132 | 6697 | coproc = 1; |
e7af610e | 6698 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6699 | { |
6700 | s = "ldc1"; | |
6701 | goto ld; | |
6702 | } | |
6703 | ||
6704 | s = "lwc1"; | |
6705 | fmt = "T,o(b)"; | |
6706 | goto ldd_std; | |
6707 | ||
6708 | case M_S_DAB: | |
fef14a42 | 6709 | if (mips_opts.arch == CPU_R4650) |
252b5132 RH |
6710 | { |
6711 | as_bad (_("opcode not supported on this processor")); | |
8fc2e39e | 6712 | break; |
252b5132 RH |
6713 | } |
6714 | ||
e7af610e | 6715 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6716 | { |
6717 | s = "sdc1"; | |
6718 | goto st; | |
6719 | } | |
6720 | ||
6721 | s = "swc1"; | |
6722 | fmt = "T,o(b)"; | |
bdaaa2e1 | 6723 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6724 | coproc = 1; |
6725 | goto ldd_std; | |
6726 | ||
6727 | case M_LD_AB: | |
ca4e0257 | 6728 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6729 | { |
6730 | s = "ld"; | |
6731 | goto ld; | |
6732 | } | |
6733 | ||
6734 | s = "lw"; | |
6735 | fmt = "t,o(b)"; | |
6736 | goto ldd_std; | |
6737 | ||
6738 | case M_SD_AB: | |
ca4e0257 | 6739 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6740 | { |
6741 | s = "sd"; | |
6742 | goto st; | |
6743 | } | |
6744 | ||
6745 | s = "sw"; | |
6746 | fmt = "t,o(b)"; | |
6747 | ||
6748 | ldd_std: | |
6749 | if (offset_expr.X_op != O_symbol | |
6750 | && offset_expr.X_op != O_constant) | |
6751 | { | |
6752 | as_bad (_("expression too complex")); | |
6753 | offset_expr.X_op = O_constant; | |
6754 | } | |
6755 | ||
2051e8c4 MR |
6756 | if (HAVE_32BIT_ADDRESSES |
6757 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) | |
55e08f71 NC |
6758 | { |
6759 | char value [32]; | |
6760 | ||
6761 | sprintf_vma (value, offset_expr.X_add_number); | |
20e1fcfd | 6762 | as_bad (_("Number (0x%s) larger than 32 bits"), value); |
55e08f71 | 6763 | } |
2051e8c4 | 6764 | |
252b5132 RH |
6765 | /* Even on a big endian machine $fn comes before $fn+1. We have |
6766 | to adjust when loading from memory. We set coproc if we must | |
6767 | load $fn+1 first. */ | |
bdaaa2e1 | 6768 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6769 | if (! target_big_endian) |
6770 | coproc = 0; | |
6771 | ||
6772 | if (mips_pic == NO_PIC | |
6773 | || offset_expr.X_op == O_constant) | |
6774 | { | |
6775 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 TS |
6776 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
6777 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6778 | If we have a base register, we use this |
6779 | addu $at,$breg,$gp | |
cdf6fd85 TS |
6780 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
6781 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6782 | If this is not a GP relative symbol, we want |
6783 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6784 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
6785 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
6786 | If there is a base register, we add it to $at after the | |
6787 | lui instruction. If there is a constant, we always use | |
6788 | the last case. */ | |
39a59cf8 MR |
6789 | if (offset_expr.X_op == O_symbol |
6790 | && (valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
6caf9ef4 | 6791 | && !nopic_need_relax (offset_expr.X_add_symbol, 1)) |
252b5132 | 6792 | { |
4d7206a2 | 6793 | relax_start (offset_expr.X_add_symbol); |
252b5132 RH |
6794 | if (breg == 0) |
6795 | { | |
c9914766 | 6796 | tempreg = mips_gp_register; |
252b5132 RH |
6797 | } |
6798 | else | |
6799 | { | |
67c0d1eb | 6800 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", |
17a2f251 | 6801 | AT, breg, mips_gp_register); |
252b5132 | 6802 | tempreg = AT; |
252b5132 RH |
6803 | used_at = 1; |
6804 | } | |
6805 | ||
beae10d5 | 6806 | /* Itbl support may require additional care here. */ |
67c0d1eb | 6807 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 6808 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6809 | offset_expr.X_add_number += 4; |
6810 | ||
6811 | /* Set mips_optimize to 2 to avoid inserting an | |
6812 | undesired nop. */ | |
6813 | hold_mips_optimize = mips_optimize; | |
6814 | mips_optimize = 2; | |
beae10d5 | 6815 | /* Itbl support may require additional care here. */ |
67c0d1eb | 6816 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 6817 | BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6818 | mips_optimize = hold_mips_optimize; |
6819 | ||
4d7206a2 | 6820 | relax_switch (); |
252b5132 RH |
6821 | |
6822 | /* We just generated two relocs. When tc_gen_reloc | |
6823 | handles this case, it will skip the first reloc and | |
6824 | handle the second. The second reloc already has an | |
6825 | extra addend of 4, which we added above. We must | |
6826 | subtract it out, and then subtract another 4 to make | |
6827 | the first reloc come out right. The second reloc | |
6828 | will come out right because we are going to add 4 to | |
6829 | offset_expr when we build its instruction below. | |
6830 | ||
6831 | If we have a symbol, then we don't want to include | |
6832 | the offset, because it will wind up being included | |
6833 | when we generate the reloc. */ | |
6834 | ||
6835 | if (offset_expr.X_op == O_constant) | |
6836 | offset_expr.X_add_number -= 8; | |
6837 | else | |
6838 | { | |
6839 | offset_expr.X_add_number = -4; | |
6840 | offset_expr.X_op = O_constant; | |
6841 | } | |
6842 | } | |
8fc2e39e | 6843 | used_at = 1; |
67c0d1eb | 6844 | macro_build_lui (&offset_expr, AT); |
252b5132 | 6845 | if (breg != 0) |
67c0d1eb | 6846 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 6847 | /* Itbl support may require additional care here. */ |
67c0d1eb | 6848 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 6849 | BFD_RELOC_LO16, AT); |
252b5132 RH |
6850 | /* FIXME: How do we handle overflow here? */ |
6851 | offset_expr.X_add_number += 4; | |
beae10d5 | 6852 | /* Itbl support may require additional care here. */ |
67c0d1eb | 6853 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 6854 | BFD_RELOC_LO16, AT); |
4d7206a2 RS |
6855 | if (mips_relax.sequence) |
6856 | relax_end (); | |
bdaaa2e1 | 6857 | } |
0a44bf69 | 6858 | else if (!mips_big_got) |
252b5132 | 6859 | { |
252b5132 RH |
6860 | /* If this is a reference to an external symbol, we want |
6861 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6862 | nop | |
6863 | <op> $treg,0($at) | |
6864 | <op> $treg+1,4($at) | |
6865 | Otherwise we want | |
6866 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6867 | nop | |
6868 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
6869 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
6870 | If there is a base register we add it to $at before the | |
6871 | lwc1 instructions. If there is a constant we include it | |
6872 | in the lwc1 instructions. */ | |
6873 | used_at = 1; | |
6874 | expr1.X_add_number = offset_expr.X_add_number; | |
252b5132 RH |
6875 | if (expr1.X_add_number < -0x8000 |
6876 | || expr1.X_add_number >= 0x8000 - 4) | |
6877 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 6878 | load_got_offset (AT, &offset_expr); |
269137b2 | 6879 | load_delay_nop (); |
252b5132 | 6880 | if (breg != 0) |
67c0d1eb | 6881 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
252b5132 RH |
6882 | |
6883 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
6884 | nop. */ | |
6885 | hold_mips_optimize = mips_optimize; | |
6886 | mips_optimize = 2; | |
4d7206a2 | 6887 | |
beae10d5 | 6888 | /* Itbl support may require additional care here. */ |
4d7206a2 | 6889 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6890 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
6891 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 6892 | expr1.X_add_number += 4; |
67c0d1eb RS |
6893 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
6894 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 6895 | relax_switch (); |
67c0d1eb RS |
6896 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
6897 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 6898 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
6899 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
6900 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 6901 | relax_end (); |
252b5132 | 6902 | |
4d7206a2 | 6903 | mips_optimize = hold_mips_optimize; |
252b5132 | 6904 | } |
0a44bf69 | 6905 | else if (mips_big_got) |
252b5132 | 6906 | { |
67c0d1eb | 6907 | int gpdelay; |
252b5132 RH |
6908 | |
6909 | /* If this is a reference to an external symbol, we want | |
6910 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6911 | addu $at,$at,$gp | |
6912 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
6913 | nop | |
6914 | <op> $treg,0($at) | |
6915 | <op> $treg+1,4($at) | |
6916 | Otherwise we want | |
6917 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6918 | nop | |
6919 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
6920 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
6921 | If there is a base register we add it to $at before the | |
6922 | lwc1 instructions. If there is a constant we include it | |
6923 | in the lwc1 instructions. */ | |
6924 | used_at = 1; | |
6925 | expr1.X_add_number = offset_expr.X_add_number; | |
6926 | offset_expr.X_add_number = 0; | |
6927 | if (expr1.X_add_number < -0x8000 | |
6928 | || expr1.X_add_number >= 0x8000 - 4) | |
6929 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
67c0d1eb | 6930 | gpdelay = reg_needs_delay (mips_gp_register); |
4d7206a2 | 6931 | relax_start (offset_expr.X_add_symbol); |
67c0d1eb RS |
6932 | macro_build (&offset_expr, "lui", "t,u", |
6933 | AT, BFD_RELOC_MIPS_GOT_HI16); | |
6934 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", | |
17a2f251 | 6935 | AT, AT, mips_gp_register); |
67c0d1eb | 6936 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", |
17a2f251 | 6937 | AT, BFD_RELOC_MIPS_GOT_LO16, AT); |
269137b2 | 6938 | load_delay_nop (); |
252b5132 | 6939 | if (breg != 0) |
67c0d1eb | 6940 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 6941 | /* Itbl support may require additional care here. */ |
67c0d1eb | 6942 | macro_build (&expr1, s, fmt, coproc ? treg + 1 : treg, |
17a2f251 | 6943 | BFD_RELOC_LO16, AT); |
252b5132 RH |
6944 | expr1.X_add_number += 4; |
6945 | ||
6946 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
6947 | nop. */ | |
6948 | hold_mips_optimize = mips_optimize; | |
6949 | mips_optimize = 2; | |
beae10d5 | 6950 | /* Itbl support may require additional care here. */ |
67c0d1eb | 6951 | macro_build (&expr1, s, fmt, coproc ? treg : treg + 1, |
17a2f251 | 6952 | BFD_RELOC_LO16, AT); |
252b5132 RH |
6953 | mips_optimize = hold_mips_optimize; |
6954 | expr1.X_add_number -= 4; | |
6955 | ||
4d7206a2 RS |
6956 | relax_switch (); |
6957 | offset_expr.X_add_number = expr1.X_add_number; | |
67c0d1eb RS |
6958 | if (gpdelay) |
6959 | macro_build (NULL, "nop", ""); | |
6960 | macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT, | |
6961 | BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
269137b2 | 6962 | load_delay_nop (); |
252b5132 | 6963 | if (breg != 0) |
67c0d1eb | 6964 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT); |
beae10d5 | 6965 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
6966 | macro_build (&offset_expr, s, fmt, coproc ? treg + 1 : treg, |
6967 | BFD_RELOC_LO16, AT); | |
4d7206a2 | 6968 | offset_expr.X_add_number += 4; |
252b5132 RH |
6969 | |
6970 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
6971 | nop. */ | |
6972 | hold_mips_optimize = mips_optimize; | |
6973 | mips_optimize = 2; | |
beae10d5 | 6974 | /* Itbl support may require additional care here. */ |
67c0d1eb RS |
6975 | macro_build (&offset_expr, s, fmt, coproc ? treg : treg + 1, |
6976 | BFD_RELOC_LO16, AT); | |
252b5132 | 6977 | mips_optimize = hold_mips_optimize; |
4d7206a2 | 6978 | relax_end (); |
252b5132 | 6979 | } |
252b5132 RH |
6980 | else |
6981 | abort (); | |
6982 | ||
252b5132 RH |
6983 | break; |
6984 | ||
6985 | case M_LD_OB: | |
6986 | s = "lw"; | |
6987 | goto sd_ob; | |
6988 | case M_SD_OB: | |
6989 | s = "sw"; | |
6990 | sd_ob: | |
ca4e0257 | 6991 | assert (HAVE_32BIT_ADDRESSES); |
67c0d1eb | 6992 | macro_build (&offset_expr, s, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
252b5132 | 6993 | offset_expr.X_add_number += 4; |
67c0d1eb | 6994 | macro_build (&offset_expr, s, "t,o(b)", treg + 1, BFD_RELOC_LO16, breg); |
8fc2e39e | 6995 | break; |
252b5132 RH |
6996 | |
6997 | /* New code added to support COPZ instructions. | |
6998 | This code builds table entries out of the macros in mip_opcodes. | |
6999 | R4000 uses interlocks to handle coproc delays. | |
7000 | Other chips (like the R3000) require nops to be inserted for delays. | |
7001 | ||
f72c8c98 | 7002 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
7003 | In order to fill delay slots for non-interlocked chips, |
7004 | we must have a way to specify delays based on the coprocessor. | |
7005 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
7006 | What are the side-effects of the cop instruction? | |
7007 | What cache support might we have and what are its effects? | |
7008 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 7009 | What registers are read/set/modified? |
252b5132 RH |
7010 | |
7011 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 7012 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
7013 | |
7014 | case M_COP0: | |
7015 | s = "c0"; | |
7016 | goto copz; | |
7017 | case M_COP1: | |
7018 | s = "c1"; | |
7019 | goto copz; | |
7020 | case M_COP2: | |
7021 | s = "c2"; | |
7022 | goto copz; | |
7023 | case M_COP3: | |
7024 | s = "c3"; | |
7025 | copz: | |
7026 | /* For now we just do C (same as Cz). The parameter will be | |
7027 | stored in insn_opcode by mips_ip. */ | |
67c0d1eb | 7028 | macro_build (NULL, s, "C", ip->insn_opcode); |
8fc2e39e | 7029 | break; |
252b5132 | 7030 | |
ea1fb5dc | 7031 | case M_MOVE: |
67c0d1eb | 7032 | move_register (dreg, sreg); |
8fc2e39e | 7033 | break; |
ea1fb5dc | 7034 | |
252b5132 RH |
7035 | #ifdef LOSING_COMPILER |
7036 | default: | |
7037 | /* Try and see if this is a new itbl instruction. | |
7038 | This code builds table entries out of the macros in mip_opcodes. | |
7039 | FIXME: For now we just assemble the expression and pass it's | |
7040 | value along as a 32-bit immediate. | |
bdaaa2e1 | 7041 | We may want to have the assembler assemble this value, |
252b5132 RH |
7042 | so that we gain the assembler's knowledge of delay slots, |
7043 | symbols, etc. | |
7044 | Would it be more efficient to use mask (id) here? */ | |
bdaaa2e1 | 7045 | if (itbl_have_entries |
252b5132 | 7046 | && (immed_expr = itbl_assemble (ip->insn_mo->name, ""))) |
beae10d5 | 7047 | { |
252b5132 RH |
7048 | s = ip->insn_mo->name; |
7049 | s2 = "cop3"; | |
7050 | coproc = ITBL_DECODE_PNUM (immed_expr);; | |
67c0d1eb | 7051 | macro_build (&immed_expr, s, "C"); |
8fc2e39e | 7052 | break; |
beae10d5 | 7053 | } |
252b5132 | 7054 | macro2 (ip); |
8fc2e39e | 7055 | break; |
252b5132 | 7056 | } |
8fc2e39e TS |
7057 | if (mips_opts.noat && used_at) |
7058 | as_bad (_("Macro used $at after \".set noat\"")); | |
252b5132 | 7059 | } |
bdaaa2e1 | 7060 | |
252b5132 | 7061 | static void |
17a2f251 | 7062 | macro2 (struct mips_cl_insn *ip) |
252b5132 | 7063 | { |
3994f87e | 7064 | int treg, sreg, dreg, breg; |
252b5132 RH |
7065 | int tempreg; |
7066 | int mask; | |
252b5132 RH |
7067 | int used_at; |
7068 | expressionS expr1; | |
7069 | const char *s; | |
7070 | const char *s2; | |
7071 | const char *fmt; | |
7072 | int likely = 0; | |
7073 | int dbl = 0; | |
7074 | int coproc = 0; | |
7075 | int lr = 0; | |
7076 | int imm = 0; | |
7077 | int off; | |
7078 | offsetT maxnum; | |
7079 | bfd_reloc_code_real_type r; | |
bdaaa2e1 | 7080 | |
252b5132 RH |
7081 | treg = (ip->insn_opcode >> 16) & 0x1f; |
7082 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
7083 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
7084 | mask = ip->insn_mo->mask; | |
bdaaa2e1 | 7085 | |
252b5132 RH |
7086 | expr1.X_op = O_constant; |
7087 | expr1.X_op_symbol = NULL; | |
7088 | expr1.X_add_symbol = NULL; | |
7089 | expr1.X_add_number = 1; | |
bdaaa2e1 | 7090 | |
252b5132 RH |
7091 | switch (mask) |
7092 | { | |
7093 | #endif /* LOSING_COMPILER */ | |
7094 | ||
7095 | case M_DMUL: | |
7096 | dbl = 1; | |
7097 | case M_MUL: | |
67c0d1eb RS |
7098 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", sreg, treg); |
7099 | macro_build (NULL, "mflo", "d", dreg); | |
8fc2e39e | 7100 | break; |
252b5132 RH |
7101 | |
7102 | case M_DMUL_I: | |
7103 | dbl = 1; | |
7104 | case M_MUL_I: | |
7105 | /* The MIPS assembler some times generates shifts and adds. I'm | |
7106 | not trying to be that fancy. GCC should do this for us | |
7107 | anyway. */ | |
8fc2e39e | 7108 | used_at = 1; |
67c0d1eb RS |
7109 | load_register (AT, &imm_expr, dbl); |
7110 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, AT); | |
7111 | macro_build (NULL, "mflo", "d", dreg); | |
252b5132 RH |
7112 | break; |
7113 | ||
7114 | case M_DMULO_I: | |
7115 | dbl = 1; | |
7116 | case M_MULO_I: | |
7117 | imm = 1; | |
7118 | goto do_mulo; | |
7119 | ||
7120 | case M_DMULO: | |
7121 | dbl = 1; | |
7122 | case M_MULO: | |
7123 | do_mulo: | |
7d10b47d | 7124 | start_noreorder (); |
8fc2e39e | 7125 | used_at = 1; |
252b5132 | 7126 | if (imm) |
67c0d1eb RS |
7127 | load_register (AT, &imm_expr, dbl); |
7128 | macro_build (NULL, dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); | |
7129 | macro_build (NULL, "mflo", "d", dreg); | |
7130 | macro_build (NULL, dbl ? "dsra32" : "sra", "d,w,<", dreg, dreg, RA); | |
7131 | macro_build (NULL, "mfhi", "d", AT); | |
252b5132 | 7132 | if (mips_trap) |
67c0d1eb | 7133 | macro_build (NULL, "tne", "s,t,q", dreg, AT, 6); |
252b5132 RH |
7134 | else |
7135 | { | |
7136 | expr1.X_add_number = 8; | |
67c0d1eb RS |
7137 | macro_build (&expr1, "beq", "s,t,p", dreg, AT); |
7138 | macro_build (NULL, "nop", "", 0); | |
7139 | macro_build (NULL, "break", "c", 6); | |
252b5132 | 7140 | } |
7d10b47d | 7141 | end_noreorder (); |
67c0d1eb | 7142 | macro_build (NULL, "mflo", "d", dreg); |
252b5132 RH |
7143 | break; |
7144 | ||
7145 | case M_DMULOU_I: | |
7146 | dbl = 1; | |
7147 | case M_MULOU_I: | |
7148 | imm = 1; | |
7149 | goto do_mulou; | |
7150 | ||
7151 | case M_DMULOU: | |
7152 | dbl = 1; | |
7153 | case M_MULOU: | |
7154 | do_mulou: | |
7d10b47d | 7155 | start_noreorder (); |
8fc2e39e | 7156 | used_at = 1; |
252b5132 | 7157 | if (imm) |
67c0d1eb RS |
7158 | load_register (AT, &imm_expr, dbl); |
7159 | macro_build (NULL, dbl ? "dmultu" : "multu", "s,t", | |
17a2f251 | 7160 | sreg, imm ? AT : treg); |
67c0d1eb RS |
7161 | macro_build (NULL, "mfhi", "d", AT); |
7162 | macro_build (NULL, "mflo", "d", dreg); | |
252b5132 | 7163 | if (mips_trap) |
67c0d1eb | 7164 | macro_build (NULL, "tne", "s,t,q", AT, 0, 6); |
252b5132 RH |
7165 | else |
7166 | { | |
7167 | expr1.X_add_number = 8; | |
67c0d1eb RS |
7168 | macro_build (&expr1, "beq", "s,t,p", AT, 0); |
7169 | macro_build (NULL, "nop", "", 0); | |
7170 | macro_build (NULL, "break", "c", 6); | |
252b5132 | 7171 | } |
7d10b47d | 7172 | end_noreorder (); |
252b5132 RH |
7173 | break; |
7174 | ||
771c7ce4 | 7175 | case M_DROL: |
fef14a42 | 7176 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
7177 | { |
7178 | if (dreg == sreg) | |
7179 | { | |
7180 | tempreg = AT; | |
7181 | used_at = 1; | |
7182 | } | |
7183 | else | |
7184 | { | |
7185 | tempreg = dreg; | |
82dd0097 | 7186 | } |
67c0d1eb RS |
7187 | macro_build (NULL, "dnegu", "d,w", tempreg, treg); |
7188 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 7189 | break; |
82dd0097 | 7190 | } |
8fc2e39e | 7191 | used_at = 1; |
67c0d1eb RS |
7192 | macro_build (NULL, "dsubu", "d,v,t", AT, 0, treg); |
7193 | macro_build (NULL, "dsrlv", "d,t,s", AT, sreg, AT); | |
7194 | macro_build (NULL, "dsllv", "d,t,s", dreg, sreg, treg); | |
7195 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7196 | break; |
7197 | ||
252b5132 | 7198 | case M_ROL: |
fef14a42 | 7199 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 CD |
7200 | { |
7201 | if (dreg == sreg) | |
7202 | { | |
7203 | tempreg = AT; | |
7204 | used_at = 1; | |
7205 | } | |
7206 | else | |
7207 | { | |
7208 | tempreg = dreg; | |
82dd0097 | 7209 | } |
67c0d1eb RS |
7210 | macro_build (NULL, "negu", "d,w", tempreg, treg); |
7211 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, tempreg); | |
8fc2e39e | 7212 | break; |
82dd0097 | 7213 | } |
8fc2e39e | 7214 | used_at = 1; |
67c0d1eb RS |
7215 | macro_build (NULL, "subu", "d,v,t", AT, 0, treg); |
7216 | macro_build (NULL, "srlv", "d,t,s", AT, sreg, AT); | |
7217 | macro_build (NULL, "sllv", "d,t,s", dreg, sreg, treg); | |
7218 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7219 | break; |
7220 | ||
771c7ce4 TS |
7221 | case M_DROL_I: |
7222 | { | |
7223 | unsigned int rot; | |
82dd0097 | 7224 | char *l, *r; |
771c7ce4 TS |
7225 | |
7226 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7227 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7228 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 7229 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
60b63b72 RS |
7230 | { |
7231 | rot = (64 - rot) & 0x3f; | |
7232 | if (rot >= 32) | |
67c0d1eb | 7233 | macro_build (NULL, "dror32", "d,w,<", dreg, sreg, rot - 32); |
60b63b72 | 7234 | else |
67c0d1eb | 7235 | macro_build (NULL, "dror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7236 | break; |
60b63b72 | 7237 | } |
483fc7cd | 7238 | if (rot == 0) |
483fc7cd | 7239 | { |
67c0d1eb | 7240 | macro_build (NULL, "dsrl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7241 | break; |
483fc7cd | 7242 | } |
82dd0097 CD |
7243 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
7244 | r = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; | |
7245 | rot &= 0x1f; | |
8fc2e39e | 7246 | used_at = 1; |
67c0d1eb RS |
7247 | macro_build (NULL, l, "d,w,<", AT, sreg, rot); |
7248 | macro_build (NULL, r, "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7249 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7250 | } |
7251 | break; | |
7252 | ||
252b5132 | 7253 | case M_ROL_I: |
771c7ce4 TS |
7254 | { |
7255 | unsigned int rot; | |
7256 | ||
7257 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7258 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7259 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 7260 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
60b63b72 | 7261 | { |
67c0d1eb | 7262 | macro_build (NULL, "ror", "d,w,<", dreg, sreg, (32 - rot) & 0x1f); |
8fc2e39e | 7263 | break; |
60b63b72 | 7264 | } |
483fc7cd | 7265 | if (rot == 0) |
483fc7cd | 7266 | { |
67c0d1eb | 7267 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7268 | break; |
483fc7cd | 7269 | } |
8fc2e39e | 7270 | used_at = 1; |
67c0d1eb RS |
7271 | macro_build (NULL, "sll", "d,w,<", AT, sreg, rot); |
7272 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7273 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7274 | } |
7275 | break; | |
7276 | ||
7277 | case M_DROR: | |
fef14a42 | 7278 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 | 7279 | { |
67c0d1eb | 7280 | macro_build (NULL, "drorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 7281 | break; |
82dd0097 | 7282 | } |
8fc2e39e | 7283 | used_at = 1; |
67c0d1eb RS |
7284 | macro_build (NULL, "dsubu", "d,v,t", AT, 0, treg); |
7285 | macro_build (NULL, "dsllv", "d,t,s", AT, sreg, AT); | |
7286 | macro_build (NULL, "dsrlv", "d,t,s", dreg, sreg, treg); | |
7287 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7288 | break; |
7289 | ||
7290 | case M_ROR: | |
fef14a42 | 7291 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 7292 | { |
67c0d1eb | 7293 | macro_build (NULL, "rorv", "d,t,s", dreg, sreg, treg); |
8fc2e39e | 7294 | break; |
82dd0097 | 7295 | } |
8fc2e39e | 7296 | used_at = 1; |
67c0d1eb RS |
7297 | macro_build (NULL, "subu", "d,v,t", AT, 0, treg); |
7298 | macro_build (NULL, "sllv", "d,t,s", AT, sreg, AT); | |
7299 | macro_build (NULL, "srlv", "d,t,s", dreg, sreg, treg); | |
7300 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7301 | break; |
7302 | ||
771c7ce4 TS |
7303 | case M_DROR_I: |
7304 | { | |
7305 | unsigned int rot; | |
82dd0097 | 7306 | char *l, *r; |
771c7ce4 TS |
7307 | |
7308 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7309 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7310 | rot = imm_expr.X_add_number & 0x3f; |
fef14a42 | 7311 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_opts.arch)) |
82dd0097 CD |
7312 | { |
7313 | if (rot >= 32) | |
67c0d1eb | 7314 | macro_build (NULL, "dror32", "d,w,<", dreg, sreg, rot - 32); |
82dd0097 | 7315 | else |
67c0d1eb | 7316 | macro_build (NULL, "dror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7317 | break; |
82dd0097 | 7318 | } |
483fc7cd | 7319 | if (rot == 0) |
483fc7cd | 7320 | { |
67c0d1eb | 7321 | macro_build (NULL, "dsrl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7322 | break; |
483fc7cd | 7323 | } |
82dd0097 CD |
7324 | r = (rot < 0x20) ? "dsrl" : "dsrl32"; |
7325 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; | |
7326 | rot &= 0x1f; | |
8fc2e39e | 7327 | used_at = 1; |
67c0d1eb RS |
7328 | macro_build (NULL, r, "d,w,<", AT, sreg, rot); |
7329 | macro_build (NULL, l, "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7330 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7331 | } |
7332 | break; | |
7333 | ||
252b5132 | 7334 | case M_ROR_I: |
771c7ce4 TS |
7335 | { |
7336 | unsigned int rot; | |
7337 | ||
7338 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7339 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7340 | rot = imm_expr.X_add_number & 0x1f; |
fef14a42 | 7341 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_opts.arch)) |
82dd0097 | 7342 | { |
67c0d1eb | 7343 | macro_build (NULL, "ror", "d,w,<", dreg, sreg, rot); |
8fc2e39e | 7344 | break; |
82dd0097 | 7345 | } |
483fc7cd | 7346 | if (rot == 0) |
483fc7cd | 7347 | { |
67c0d1eb | 7348 | macro_build (NULL, "srl", "d,w,<", dreg, sreg, 0); |
8fc2e39e | 7349 | break; |
483fc7cd | 7350 | } |
8fc2e39e | 7351 | used_at = 1; |
67c0d1eb RS |
7352 | macro_build (NULL, "srl", "d,w,<", AT, sreg, rot); |
7353 | macro_build (NULL, "sll", "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7354 | macro_build (NULL, "or", "d,v,t", dreg, dreg, AT); | |
771c7ce4 | 7355 | } |
252b5132 RH |
7356 | break; |
7357 | ||
7358 | case M_S_DOB: | |
fef14a42 | 7359 | if (mips_opts.arch == CPU_R4650) |
252b5132 RH |
7360 | { |
7361 | as_bad (_("opcode not supported on this processor")); | |
8fc2e39e | 7362 | break; |
252b5132 | 7363 | } |
e7af610e | 7364 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
7365 | /* Even on a big endian machine $fn comes before $fn+1. We have |
7366 | to adjust when storing to memory. */ | |
67c0d1eb RS |
7367 | macro_build (&offset_expr, "swc1", "T,o(b)", |
7368 | target_big_endian ? treg + 1 : treg, BFD_RELOC_LO16, breg); | |
252b5132 | 7369 | offset_expr.X_add_number += 4; |
67c0d1eb RS |
7370 | macro_build (&offset_expr, "swc1", "T,o(b)", |
7371 | target_big_endian ? treg : treg + 1, BFD_RELOC_LO16, breg); | |
8fc2e39e | 7372 | break; |
252b5132 RH |
7373 | |
7374 | case M_SEQ: | |
7375 | if (sreg == 0) | |
67c0d1eb | 7376 | macro_build (&expr1, "sltiu", "t,r,j", dreg, treg, BFD_RELOC_LO16); |
252b5132 | 7377 | else if (treg == 0) |
67c0d1eb | 7378 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7379 | else |
7380 | { | |
67c0d1eb RS |
7381 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
7382 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 | 7383 | } |
8fc2e39e | 7384 | break; |
252b5132 RH |
7385 | |
7386 | case M_SEQ_I: | |
7387 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7388 | { | |
67c0d1eb | 7389 | macro_build (&expr1, "sltiu", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7390 | break; |
252b5132 RH |
7391 | } |
7392 | if (sreg == 0) | |
7393 | { | |
7394 | as_warn (_("Instruction %s: result is always false"), | |
7395 | ip->insn_mo->name); | |
67c0d1eb | 7396 | move_register (dreg, 0); |
8fc2e39e | 7397 | break; |
252b5132 RH |
7398 | } |
7399 | if (imm_expr.X_op == O_constant | |
7400 | && imm_expr.X_add_number >= 0 | |
7401 | && imm_expr.X_add_number < 0x10000) | |
7402 | { | |
67c0d1eb | 7403 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7404 | } |
7405 | else if (imm_expr.X_op == O_constant | |
7406 | && imm_expr.X_add_number > -0x8000 | |
7407 | && imm_expr.X_add_number < 0) | |
7408 | { | |
7409 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7410 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 7411 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7412 | } |
7413 | else | |
7414 | { | |
67c0d1eb RS |
7415 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7416 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7417 | used_at = 1; |
7418 | } | |
67c0d1eb | 7419 | macro_build (&expr1, "sltiu", "t,r,j", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 7420 | break; |
252b5132 RH |
7421 | |
7422 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
7423 | s = "slt"; | |
7424 | goto sge; | |
7425 | case M_SGEU: | |
7426 | s = "sltu"; | |
7427 | sge: | |
67c0d1eb RS |
7428 | macro_build (NULL, s, "d,v,t", dreg, sreg, treg); |
7429 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 7430 | break; |
252b5132 RH |
7431 | |
7432 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
7433 | case M_SGEU_I: | |
7434 | if (imm_expr.X_op == O_constant | |
7435 | && imm_expr.X_add_number >= -0x8000 | |
7436 | && imm_expr.X_add_number < 0x8000) | |
7437 | { | |
67c0d1eb RS |
7438 | macro_build (&imm_expr, mask == M_SGE_I ? "slti" : "sltiu", "t,r,j", |
7439 | dreg, sreg, BFD_RELOC_LO16); | |
252b5132 RH |
7440 | } |
7441 | else | |
7442 | { | |
67c0d1eb RS |
7443 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7444 | macro_build (NULL, mask == M_SGE_I ? "slt" : "sltu", "d,v,t", | |
7445 | dreg, sreg, AT); | |
252b5132 RH |
7446 | used_at = 1; |
7447 | } | |
67c0d1eb | 7448 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); |
8fc2e39e | 7449 | break; |
252b5132 RH |
7450 | |
7451 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
7452 | s = "slt"; | |
7453 | goto sgt; | |
7454 | case M_SGTU: | |
7455 | s = "sltu"; | |
7456 | sgt: | |
67c0d1eb | 7457 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
8fc2e39e | 7458 | break; |
252b5132 RH |
7459 | |
7460 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
7461 | s = "slt"; | |
7462 | goto sgti; | |
7463 | case M_SGTU_I: | |
7464 | s = "sltu"; | |
7465 | sgti: | |
8fc2e39e | 7466 | used_at = 1; |
67c0d1eb RS |
7467 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7468 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
252b5132 RH |
7469 | break; |
7470 | ||
2396cfb9 | 7471 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
7472 | s = "slt"; |
7473 | goto sle; | |
7474 | case M_SLEU: | |
7475 | s = "sltu"; | |
7476 | sle: | |
67c0d1eb RS |
7477 | macro_build (NULL, s, "d,v,t", dreg, treg, sreg); |
7478 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
8fc2e39e | 7479 | break; |
252b5132 | 7480 | |
2396cfb9 | 7481 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
7482 | s = "slt"; |
7483 | goto slei; | |
7484 | case M_SLEU_I: | |
7485 | s = "sltu"; | |
7486 | slei: | |
8fc2e39e | 7487 | used_at = 1; |
67c0d1eb RS |
7488 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7489 | macro_build (NULL, s, "d,v,t", dreg, AT, sreg); | |
7490 | macro_build (&expr1, "xori", "t,r,i", dreg, dreg, BFD_RELOC_LO16); | |
252b5132 RH |
7491 | break; |
7492 | ||
7493 | case M_SLT_I: | |
7494 | if (imm_expr.X_op == O_constant | |
7495 | && imm_expr.X_add_number >= -0x8000 | |
7496 | && imm_expr.X_add_number < 0x8000) | |
7497 | { | |
67c0d1eb | 7498 | macro_build (&imm_expr, "slti", "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
8fc2e39e | 7499 | break; |
252b5132 | 7500 | } |
8fc2e39e | 7501 | used_at = 1; |
67c0d1eb RS |
7502 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7503 | macro_build (NULL, "slt", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7504 | break; |
7505 | ||
7506 | case M_SLTU_I: | |
7507 | if (imm_expr.X_op == O_constant | |
7508 | && imm_expr.X_add_number >= -0x8000 | |
7509 | && imm_expr.X_add_number < 0x8000) | |
7510 | { | |
67c0d1eb | 7511 | macro_build (&imm_expr, "sltiu", "t,r,j", dreg, sreg, |
17a2f251 | 7512 | BFD_RELOC_LO16); |
8fc2e39e | 7513 | break; |
252b5132 | 7514 | } |
8fc2e39e | 7515 | used_at = 1; |
67c0d1eb RS |
7516 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7517 | macro_build (NULL, "sltu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7518 | break; |
7519 | ||
7520 | case M_SNE: | |
7521 | if (sreg == 0) | |
67c0d1eb | 7522 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, treg); |
252b5132 | 7523 | else if (treg == 0) |
67c0d1eb | 7524 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
7525 | else |
7526 | { | |
67c0d1eb RS |
7527 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, treg); |
7528 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); | |
252b5132 | 7529 | } |
8fc2e39e | 7530 | break; |
252b5132 RH |
7531 | |
7532 | case M_SNE_I: | |
7533 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7534 | { | |
67c0d1eb | 7535 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, sreg); |
8fc2e39e | 7536 | break; |
252b5132 RH |
7537 | } |
7538 | if (sreg == 0) | |
7539 | { | |
7540 | as_warn (_("Instruction %s: result is always true"), | |
7541 | ip->insn_mo->name); | |
67c0d1eb RS |
7542 | macro_build (&expr1, HAVE_32BIT_GPRS ? "addiu" : "daddiu", "t,r,j", |
7543 | dreg, 0, BFD_RELOC_LO16); | |
8fc2e39e | 7544 | break; |
252b5132 RH |
7545 | } |
7546 | if (imm_expr.X_op == O_constant | |
7547 | && imm_expr.X_add_number >= 0 | |
7548 | && imm_expr.X_add_number < 0x10000) | |
7549 | { | |
67c0d1eb | 7550 | macro_build (&imm_expr, "xori", "t,r,i", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7551 | } |
7552 | else if (imm_expr.X_op == O_constant | |
7553 | && imm_expr.X_add_number > -0x8000 | |
7554 | && imm_expr.X_add_number < 0) | |
7555 | { | |
7556 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7557 | macro_build (&imm_expr, HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
17a2f251 | 7558 | "t,r,j", dreg, sreg, BFD_RELOC_LO16); |
252b5132 RH |
7559 | } |
7560 | else | |
7561 | { | |
67c0d1eb RS |
7562 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7563 | macro_build (NULL, "xor", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7564 | used_at = 1; |
7565 | } | |
67c0d1eb | 7566 | macro_build (NULL, "sltu", "d,v,t", dreg, 0, dreg); |
8fc2e39e | 7567 | break; |
252b5132 RH |
7568 | |
7569 | case M_DSUB_I: | |
7570 | dbl = 1; | |
7571 | case M_SUB_I: | |
7572 | if (imm_expr.X_op == O_constant | |
7573 | && imm_expr.X_add_number > -0x8000 | |
7574 | && imm_expr.X_add_number <= 0x8000) | |
7575 | { | |
7576 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb RS |
7577 | macro_build (&imm_expr, dbl ? "daddi" : "addi", "t,r,j", |
7578 | dreg, sreg, BFD_RELOC_LO16); | |
8fc2e39e | 7579 | break; |
252b5132 | 7580 | } |
8fc2e39e | 7581 | used_at = 1; |
67c0d1eb RS |
7582 | load_register (AT, &imm_expr, dbl); |
7583 | macro_build (NULL, dbl ? "dsub" : "sub", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7584 | break; |
7585 | ||
7586 | case M_DSUBU_I: | |
7587 | dbl = 1; | |
7588 | case M_SUBU_I: | |
7589 | if (imm_expr.X_op == O_constant | |
7590 | && imm_expr.X_add_number > -0x8000 | |
7591 | && imm_expr.X_add_number <= 0x8000) | |
7592 | { | |
7593 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb RS |
7594 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "t,r,j", |
7595 | dreg, sreg, BFD_RELOC_LO16); | |
8fc2e39e | 7596 | break; |
252b5132 | 7597 | } |
8fc2e39e | 7598 | used_at = 1; |
67c0d1eb RS |
7599 | load_register (AT, &imm_expr, dbl); |
7600 | macro_build (NULL, dbl ? "dsubu" : "subu", "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7601 | break; |
7602 | ||
7603 | case M_TEQ_I: | |
7604 | s = "teq"; | |
7605 | goto trap; | |
7606 | case M_TGE_I: | |
7607 | s = "tge"; | |
7608 | goto trap; | |
7609 | case M_TGEU_I: | |
7610 | s = "tgeu"; | |
7611 | goto trap; | |
7612 | case M_TLT_I: | |
7613 | s = "tlt"; | |
7614 | goto trap; | |
7615 | case M_TLTU_I: | |
7616 | s = "tltu"; | |
7617 | goto trap; | |
7618 | case M_TNE_I: | |
7619 | s = "tne"; | |
7620 | trap: | |
8fc2e39e | 7621 | used_at = 1; |
67c0d1eb RS |
7622 | load_register (AT, &imm_expr, HAVE_64BIT_GPRS); |
7623 | macro_build (NULL, s, "s,t", sreg, AT); | |
252b5132 RH |
7624 | break; |
7625 | ||
252b5132 | 7626 | case M_TRUNCWS: |
43841e91 | 7627 | case M_TRUNCWD: |
e7af610e | 7628 | assert (mips_opts.isa == ISA_MIPS1); |
8fc2e39e | 7629 | used_at = 1; |
252b5132 RH |
7630 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
7631 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
7632 | ||
7633 | /* | |
7634 | * Is the double cfc1 instruction a bug in the mips assembler; | |
7635 | * or is there a reason for it? | |
7636 | */ | |
7d10b47d | 7637 | start_noreorder (); |
67c0d1eb RS |
7638 | macro_build (NULL, "cfc1", "t,G", treg, RA); |
7639 | macro_build (NULL, "cfc1", "t,G", treg, RA); | |
7640 | macro_build (NULL, "nop", ""); | |
252b5132 | 7641 | expr1.X_add_number = 3; |
67c0d1eb | 7642 | macro_build (&expr1, "ori", "t,r,i", AT, treg, BFD_RELOC_LO16); |
252b5132 | 7643 | expr1.X_add_number = 2; |
67c0d1eb RS |
7644 | macro_build (&expr1, "xori", "t,r,i", AT, AT, BFD_RELOC_LO16); |
7645 | macro_build (NULL, "ctc1", "t,G", AT, RA); | |
7646 | macro_build (NULL, "nop", ""); | |
7647 | macro_build (NULL, mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", | |
7648 | dreg, sreg); | |
7649 | macro_build (NULL, "ctc1", "t,G", treg, RA); | |
7650 | macro_build (NULL, "nop", ""); | |
7d10b47d | 7651 | end_noreorder (); |
252b5132 RH |
7652 | break; |
7653 | ||
7654 | case M_ULH: | |
7655 | s = "lb"; | |
7656 | goto ulh; | |
7657 | case M_ULHU: | |
7658 | s = "lbu"; | |
7659 | ulh: | |
8fc2e39e | 7660 | used_at = 1; |
252b5132 RH |
7661 | if (offset_expr.X_add_number >= 0x7fff) |
7662 | as_bad (_("operand overflow")); | |
252b5132 | 7663 | if (! target_big_endian) |
f9419b05 | 7664 | ++offset_expr.X_add_number; |
67c0d1eb | 7665 | macro_build (&offset_expr, s, "t,o(b)", AT, BFD_RELOC_LO16, breg); |
252b5132 | 7666 | if (! target_big_endian) |
f9419b05 | 7667 | --offset_expr.X_add_number; |
252b5132 | 7668 | else |
f9419b05 | 7669 | ++offset_expr.X_add_number; |
67c0d1eb RS |
7670 | macro_build (&offset_expr, "lbu", "t,o(b)", treg, BFD_RELOC_LO16, breg); |
7671 | macro_build (NULL, "sll", "d,w,<", AT, AT, 8); | |
7672 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
7673 | break; |
7674 | ||
7675 | case M_ULD: | |
7676 | s = "ldl"; | |
7677 | s2 = "ldr"; | |
7678 | off = 7; | |
7679 | goto ulw; | |
7680 | case M_ULW: | |
7681 | s = "lwl"; | |
7682 | s2 = "lwr"; | |
7683 | off = 3; | |
7684 | ulw: | |
7685 | if (offset_expr.X_add_number >= 0x8000 - off) | |
7686 | as_bad (_("operand overflow")); | |
af22f5b2 CD |
7687 | if (treg != breg) |
7688 | tempreg = treg; | |
7689 | else | |
8fc2e39e TS |
7690 | { |
7691 | used_at = 1; | |
7692 | tempreg = AT; | |
7693 | } | |
252b5132 RH |
7694 | if (! target_big_endian) |
7695 | offset_expr.X_add_number += off; | |
67c0d1eb | 7696 | macro_build (&offset_expr, s, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); |
252b5132 RH |
7697 | if (! target_big_endian) |
7698 | offset_expr.X_add_number -= off; | |
7699 | else | |
7700 | offset_expr.X_add_number += off; | |
67c0d1eb | 7701 | macro_build (&offset_expr, s2, "t,o(b)", tempreg, BFD_RELOC_LO16, breg); |
af22f5b2 CD |
7702 | |
7703 | /* If necessary, move the result in tempreg the final destination. */ | |
7704 | if (treg == tempreg) | |
8fc2e39e | 7705 | break; |
af22f5b2 | 7706 | /* Protect second load's delay slot. */ |
017315e4 | 7707 | load_delay_nop (); |
67c0d1eb | 7708 | move_register (treg, tempreg); |
af22f5b2 | 7709 | break; |
252b5132 RH |
7710 | |
7711 | case M_ULD_A: | |
7712 | s = "ldl"; | |
7713 | s2 = "ldr"; | |
7714 | off = 7; | |
7715 | goto ulwa; | |
7716 | case M_ULW_A: | |
7717 | s = "lwl"; | |
7718 | s2 = "lwr"; | |
7719 | off = 3; | |
7720 | ulwa: | |
d6bc6245 | 7721 | used_at = 1; |
67c0d1eb | 7722 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 7723 | if (breg != 0) |
67c0d1eb | 7724 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
7725 | if (! target_big_endian) |
7726 | expr1.X_add_number = off; | |
7727 | else | |
7728 | expr1.X_add_number = 0; | |
67c0d1eb | 7729 | macro_build (&expr1, s, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
7730 | if (! target_big_endian) |
7731 | expr1.X_add_number = 0; | |
7732 | else | |
7733 | expr1.X_add_number = off; | |
67c0d1eb | 7734 | macro_build (&expr1, s2, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
7735 | break; |
7736 | ||
7737 | case M_ULH_A: | |
7738 | case M_ULHU_A: | |
d6bc6245 | 7739 | used_at = 1; |
67c0d1eb | 7740 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 7741 | if (breg != 0) |
67c0d1eb | 7742 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
7743 | if (target_big_endian) |
7744 | expr1.X_add_number = 0; | |
67c0d1eb | 7745 | macro_build (&expr1, mask == M_ULH_A ? "lb" : "lbu", "t,o(b)", |
17a2f251 | 7746 | treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
7747 | if (target_big_endian) |
7748 | expr1.X_add_number = 1; | |
7749 | else | |
7750 | expr1.X_add_number = 0; | |
67c0d1eb RS |
7751 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); |
7752 | macro_build (NULL, "sll", "d,w,<", treg, treg, 8); | |
7753 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
7754 | break; |
7755 | ||
7756 | case M_USH: | |
8fc2e39e | 7757 | used_at = 1; |
252b5132 RH |
7758 | if (offset_expr.X_add_number >= 0x7fff) |
7759 | as_bad (_("operand overflow")); | |
7760 | if (target_big_endian) | |
f9419b05 | 7761 | ++offset_expr.X_add_number; |
67c0d1eb RS |
7762 | macro_build (&offset_expr, "sb", "t,o(b)", treg, BFD_RELOC_LO16, breg); |
7763 | macro_build (NULL, "srl", "d,w,<", AT, treg, 8); | |
252b5132 | 7764 | if (target_big_endian) |
f9419b05 | 7765 | --offset_expr.X_add_number; |
252b5132 | 7766 | else |
f9419b05 | 7767 | ++offset_expr.X_add_number; |
67c0d1eb | 7768 | macro_build (&offset_expr, "sb", "t,o(b)", AT, BFD_RELOC_LO16, breg); |
252b5132 RH |
7769 | break; |
7770 | ||
7771 | case M_USD: | |
7772 | s = "sdl"; | |
7773 | s2 = "sdr"; | |
7774 | off = 7; | |
7775 | goto usw; | |
7776 | case M_USW: | |
7777 | s = "swl"; | |
7778 | s2 = "swr"; | |
7779 | off = 3; | |
7780 | usw: | |
7781 | if (offset_expr.X_add_number >= 0x8000 - off) | |
7782 | as_bad (_("operand overflow")); | |
7783 | if (! target_big_endian) | |
7784 | offset_expr.X_add_number += off; | |
67c0d1eb | 7785 | macro_build (&offset_expr, s, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
252b5132 RH |
7786 | if (! target_big_endian) |
7787 | offset_expr.X_add_number -= off; | |
7788 | else | |
7789 | offset_expr.X_add_number += off; | |
67c0d1eb | 7790 | macro_build (&offset_expr, s2, "t,o(b)", treg, BFD_RELOC_LO16, breg); |
8fc2e39e | 7791 | break; |
252b5132 RH |
7792 | |
7793 | case M_USD_A: | |
7794 | s = "sdl"; | |
7795 | s2 = "sdr"; | |
7796 | off = 7; | |
7797 | goto uswa; | |
7798 | case M_USW_A: | |
7799 | s = "swl"; | |
7800 | s2 = "swr"; | |
7801 | off = 3; | |
7802 | uswa: | |
d6bc6245 | 7803 | used_at = 1; |
67c0d1eb | 7804 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 7805 | if (breg != 0) |
67c0d1eb | 7806 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
7807 | if (! target_big_endian) |
7808 | expr1.X_add_number = off; | |
7809 | else | |
7810 | expr1.X_add_number = 0; | |
67c0d1eb | 7811 | macro_build (&expr1, s, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
7812 | if (! target_big_endian) |
7813 | expr1.X_add_number = 0; | |
7814 | else | |
7815 | expr1.X_add_number = off; | |
67c0d1eb | 7816 | macro_build (&expr1, s2, "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
7817 | break; |
7818 | ||
7819 | case M_USH_A: | |
d6bc6245 | 7820 | used_at = 1; |
67c0d1eb | 7821 | load_address (AT, &offset_expr, &used_at); |
252b5132 | 7822 | if (breg != 0) |
67c0d1eb | 7823 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, AT, breg); |
252b5132 RH |
7824 | if (! target_big_endian) |
7825 | expr1.X_add_number = 0; | |
67c0d1eb RS |
7826 | macro_build (&expr1, "sb", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
7827 | macro_build (NULL, "srl", "d,w,<", treg, treg, 8); | |
252b5132 RH |
7828 | if (! target_big_endian) |
7829 | expr1.X_add_number = 1; | |
7830 | else | |
7831 | expr1.X_add_number = 0; | |
67c0d1eb | 7832 | macro_build (&expr1, "sb", "t,o(b)", treg, BFD_RELOC_LO16, AT); |
252b5132 RH |
7833 | if (! target_big_endian) |
7834 | expr1.X_add_number = 0; | |
7835 | else | |
7836 | expr1.X_add_number = 1; | |
67c0d1eb RS |
7837 | macro_build (&expr1, "lbu", "t,o(b)", AT, BFD_RELOC_LO16, AT); |
7838 | macro_build (NULL, "sll", "d,w,<", treg, treg, 8); | |
7839 | macro_build (NULL, "or", "d,v,t", treg, treg, AT); | |
252b5132 RH |
7840 | break; |
7841 | ||
7842 | default: | |
7843 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 7844 | are added dynamically. */ |
252b5132 RH |
7845 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
7846 | break; | |
7847 | } | |
8fc2e39e TS |
7848 | if (mips_opts.noat && used_at) |
7849 | as_bad (_("Macro used $at after \".set noat\"")); | |
252b5132 RH |
7850 | } |
7851 | ||
7852 | /* Implement macros in mips16 mode. */ | |
7853 | ||
7854 | static void | |
17a2f251 | 7855 | mips16_macro (struct mips_cl_insn *ip) |
252b5132 RH |
7856 | { |
7857 | int mask; | |
7858 | int xreg, yreg, zreg, tmp; | |
252b5132 RH |
7859 | expressionS expr1; |
7860 | int dbl; | |
7861 | const char *s, *s2, *s3; | |
7862 | ||
7863 | mask = ip->insn_mo->mask; | |
7864 | ||
bf12938e RS |
7865 | xreg = MIPS16_EXTRACT_OPERAND (RX, *ip); |
7866 | yreg = MIPS16_EXTRACT_OPERAND (RY, *ip); | |
7867 | zreg = MIPS16_EXTRACT_OPERAND (RZ, *ip); | |
252b5132 | 7868 | |
252b5132 RH |
7869 | expr1.X_op = O_constant; |
7870 | expr1.X_op_symbol = NULL; | |
7871 | expr1.X_add_symbol = NULL; | |
7872 | expr1.X_add_number = 1; | |
7873 | ||
7874 | dbl = 0; | |
7875 | ||
7876 | switch (mask) | |
7877 | { | |
7878 | default: | |
7879 | internalError (); | |
7880 | ||
7881 | case M_DDIV_3: | |
7882 | dbl = 1; | |
7883 | case M_DIV_3: | |
7884 | s = "mflo"; | |
7885 | goto do_div3; | |
7886 | case M_DREM_3: | |
7887 | dbl = 1; | |
7888 | case M_REM_3: | |
7889 | s = "mfhi"; | |
7890 | do_div3: | |
7d10b47d | 7891 | start_noreorder (); |
67c0d1eb | 7892 | macro_build (NULL, dbl ? "ddiv" : "div", "0,x,y", xreg, yreg); |
252b5132 | 7893 | expr1.X_add_number = 2; |
67c0d1eb RS |
7894 | macro_build (&expr1, "bnez", "x,p", yreg); |
7895 | macro_build (NULL, "break", "6", 7); | |
bdaaa2e1 | 7896 | |
252b5132 RH |
7897 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
7898 | since that causes an overflow. We should do that as well, | |
7899 | but I don't see how to do the comparisons without a temporary | |
7900 | register. */ | |
7d10b47d | 7901 | end_noreorder (); |
67c0d1eb | 7902 | macro_build (NULL, s, "x", zreg); |
252b5132 RH |
7903 | break; |
7904 | ||
7905 | case M_DIVU_3: | |
7906 | s = "divu"; | |
7907 | s2 = "mflo"; | |
7908 | goto do_divu3; | |
7909 | case M_REMU_3: | |
7910 | s = "divu"; | |
7911 | s2 = "mfhi"; | |
7912 | goto do_divu3; | |
7913 | case M_DDIVU_3: | |
7914 | s = "ddivu"; | |
7915 | s2 = "mflo"; | |
7916 | goto do_divu3; | |
7917 | case M_DREMU_3: | |
7918 | s = "ddivu"; | |
7919 | s2 = "mfhi"; | |
7920 | do_divu3: | |
7d10b47d | 7921 | start_noreorder (); |
67c0d1eb | 7922 | macro_build (NULL, s, "0,x,y", xreg, yreg); |
252b5132 | 7923 | expr1.X_add_number = 2; |
67c0d1eb RS |
7924 | macro_build (&expr1, "bnez", "x,p", yreg); |
7925 | macro_build (NULL, "break", "6", 7); | |
7d10b47d | 7926 | end_noreorder (); |
67c0d1eb | 7927 | macro_build (NULL, s2, "x", zreg); |
252b5132 RH |
7928 | break; |
7929 | ||
7930 | case M_DMUL: | |
7931 | dbl = 1; | |
7932 | case M_MUL: | |
67c0d1eb RS |
7933 | macro_build (NULL, dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
7934 | macro_build (NULL, "mflo", "x", zreg); | |
8fc2e39e | 7935 | break; |
252b5132 RH |
7936 | |
7937 | case M_DSUBU_I: | |
7938 | dbl = 1; | |
7939 | goto do_subu; | |
7940 | case M_SUBU_I: | |
7941 | do_subu: | |
7942 | if (imm_expr.X_op != O_constant) | |
7943 | as_bad (_("Unsupported large constant")); | |
7944 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7945 | macro_build (&imm_expr, dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
7946 | break; |
7947 | ||
7948 | case M_SUBU_I_2: | |
7949 | if (imm_expr.X_op != O_constant) | |
7950 | as_bad (_("Unsupported large constant")); | |
7951 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7952 | macro_build (&imm_expr, "addiu", "x,k", xreg); |
252b5132 RH |
7953 | break; |
7954 | ||
7955 | case M_DSUBU_I_2: | |
7956 | if (imm_expr.X_op != O_constant) | |
7957 | as_bad (_("Unsupported large constant")); | |
7958 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
67c0d1eb | 7959 | macro_build (&imm_expr, "daddiu", "y,j", yreg); |
252b5132 RH |
7960 | break; |
7961 | ||
7962 | case M_BEQ: | |
7963 | s = "cmp"; | |
7964 | s2 = "bteqz"; | |
7965 | goto do_branch; | |
7966 | case M_BNE: | |
7967 | s = "cmp"; | |
7968 | s2 = "btnez"; | |
7969 | goto do_branch; | |
7970 | case M_BLT: | |
7971 | s = "slt"; | |
7972 | s2 = "btnez"; | |
7973 | goto do_branch; | |
7974 | case M_BLTU: | |
7975 | s = "sltu"; | |
7976 | s2 = "btnez"; | |
7977 | goto do_branch; | |
7978 | case M_BLE: | |
7979 | s = "slt"; | |
7980 | s2 = "bteqz"; | |
7981 | goto do_reverse_branch; | |
7982 | case M_BLEU: | |
7983 | s = "sltu"; | |
7984 | s2 = "bteqz"; | |
7985 | goto do_reverse_branch; | |
7986 | case M_BGE: | |
7987 | s = "slt"; | |
7988 | s2 = "bteqz"; | |
7989 | goto do_branch; | |
7990 | case M_BGEU: | |
7991 | s = "sltu"; | |
7992 | s2 = "bteqz"; | |
7993 | goto do_branch; | |
7994 | case M_BGT: | |
7995 | s = "slt"; | |
7996 | s2 = "btnez"; | |
7997 | goto do_reverse_branch; | |
7998 | case M_BGTU: | |
7999 | s = "sltu"; | |
8000 | s2 = "btnez"; | |
8001 | ||
8002 | do_reverse_branch: | |
8003 | tmp = xreg; | |
8004 | xreg = yreg; | |
8005 | yreg = tmp; | |
8006 | ||
8007 | do_branch: | |
67c0d1eb RS |
8008 | macro_build (NULL, s, "x,y", xreg, yreg); |
8009 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
8010 | break; |
8011 | ||
8012 | case M_BEQ_I: | |
8013 | s = "cmpi"; | |
8014 | s2 = "bteqz"; | |
8015 | s3 = "x,U"; | |
8016 | goto do_branch_i; | |
8017 | case M_BNE_I: | |
8018 | s = "cmpi"; | |
8019 | s2 = "btnez"; | |
8020 | s3 = "x,U"; | |
8021 | goto do_branch_i; | |
8022 | case M_BLT_I: | |
8023 | s = "slti"; | |
8024 | s2 = "btnez"; | |
8025 | s3 = "x,8"; | |
8026 | goto do_branch_i; | |
8027 | case M_BLTU_I: | |
8028 | s = "sltiu"; | |
8029 | s2 = "btnez"; | |
8030 | s3 = "x,8"; | |
8031 | goto do_branch_i; | |
8032 | case M_BLE_I: | |
8033 | s = "slti"; | |
8034 | s2 = "btnez"; | |
8035 | s3 = "x,8"; | |
8036 | goto do_addone_branch_i; | |
8037 | case M_BLEU_I: | |
8038 | s = "sltiu"; | |
8039 | s2 = "btnez"; | |
8040 | s3 = "x,8"; | |
8041 | goto do_addone_branch_i; | |
8042 | case M_BGE_I: | |
8043 | s = "slti"; | |
8044 | s2 = "bteqz"; | |
8045 | s3 = "x,8"; | |
8046 | goto do_branch_i; | |
8047 | case M_BGEU_I: | |
8048 | s = "sltiu"; | |
8049 | s2 = "bteqz"; | |
8050 | s3 = "x,8"; | |
8051 | goto do_branch_i; | |
8052 | case M_BGT_I: | |
8053 | s = "slti"; | |
8054 | s2 = "bteqz"; | |
8055 | s3 = "x,8"; | |
8056 | goto do_addone_branch_i; | |
8057 | case M_BGTU_I: | |
8058 | s = "sltiu"; | |
8059 | s2 = "bteqz"; | |
8060 | s3 = "x,8"; | |
8061 | ||
8062 | do_addone_branch_i: | |
8063 | if (imm_expr.X_op != O_constant) | |
8064 | as_bad (_("Unsupported large constant")); | |
8065 | ++imm_expr.X_add_number; | |
8066 | ||
8067 | do_branch_i: | |
67c0d1eb RS |
8068 | macro_build (&imm_expr, s, s3, xreg); |
8069 | macro_build (&offset_expr, s2, "p"); | |
252b5132 RH |
8070 | break; |
8071 | ||
8072 | case M_ABS: | |
8073 | expr1.X_add_number = 0; | |
67c0d1eb | 8074 | macro_build (&expr1, "slti", "x,8", yreg); |
252b5132 | 8075 | if (xreg != yreg) |
67c0d1eb | 8076 | move_register (xreg, yreg); |
252b5132 | 8077 | expr1.X_add_number = 2; |
67c0d1eb RS |
8078 | macro_build (&expr1, "bteqz", "p"); |
8079 | macro_build (NULL, "neg", "x,w", xreg, xreg); | |
252b5132 RH |
8080 | } |
8081 | } | |
8082 | ||
8083 | /* For consistency checking, verify that all bits are specified either | |
8084 | by the match/mask part of the instruction definition, or by the | |
8085 | operand list. */ | |
8086 | static int | |
17a2f251 | 8087 | validate_mips_insn (const struct mips_opcode *opc) |
252b5132 RH |
8088 | { |
8089 | const char *p = opc->args; | |
8090 | char c; | |
8091 | unsigned long used_bits = opc->mask; | |
8092 | ||
8093 | if ((used_bits & opc->match) != opc->match) | |
8094 | { | |
8095 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
8096 | opc->name, opc->args); | |
8097 | return 0; | |
8098 | } | |
8099 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
8100 | while (*p) | |
8101 | switch (c = *p++) | |
8102 | { | |
8103 | case ',': break; | |
8104 | case '(': break; | |
8105 | case ')': break; | |
af7ee8bf CD |
8106 | case '+': |
8107 | switch (c = *p++) | |
8108 | { | |
9bcd4f99 TS |
8109 | case '1': USE_BITS (OP_MASK_UDI1, OP_SH_UDI1); break; |
8110 | case '2': USE_BITS (OP_MASK_UDI2, OP_SH_UDI2); break; | |
8111 | case '3': USE_BITS (OP_MASK_UDI3, OP_SH_UDI3); break; | |
8112 | case '4': USE_BITS (OP_MASK_UDI4, OP_SH_UDI4); break; | |
af7ee8bf CD |
8113 | case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8114 | case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
8115 | case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
bbcc0807 CD |
8116 | case 'D': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8117 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
5f74bc13 CD |
8118 | case 'E': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8119 | case 'F': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
8120 | case 'G': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
8121 | case 'H': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
8122 | case 'I': break; | |
ef2e4d86 CF |
8123 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; |
8124 | case 'T': USE_BITS (OP_MASK_RT, OP_SH_RT); | |
8125 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
af7ee8bf CD |
8126 | default: |
8127 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
8128 | c, opc->name, opc->args); | |
8129 | return 0; | |
8130 | } | |
8131 | break; | |
252b5132 RH |
8132 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8133 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
8134 | case 'A': break; | |
4372b673 | 8135 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
8136 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
8137 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
8138 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8139 | case 'F': break; | |
8140 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 8141 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 8142 | case 'I': break; |
e972090a | 8143 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
af7ee8bf | 8144 | case 'K': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
8145 | case 'L': break; |
8146 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
8147 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
8148 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
8149 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
8150 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8151 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
8152 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8153 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
8154 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8155 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
8156 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
8157 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8158 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8159 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
8160 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8161 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
8162 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
8163 | case 'f': break; | |
8164 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
8165 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8166 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8167 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
8168 | case 'l': break; | |
8169 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8170 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8171 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
8172 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8173 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8174 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8175 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8176 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8177 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8178 | case 'x': break; | |
8179 | case 'z': break; | |
8180 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
8181 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8182 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
60b63b72 RS |
8183 | case 'e': USE_BITS (OP_MASK_VECBYTE, OP_SH_VECBYTE); break; |
8184 | case '%': USE_BITS (OP_MASK_VECALIGN, OP_SH_VECALIGN); break; | |
8185 | case '[': break; | |
8186 | case ']': break; | |
74cd071d CF |
8187 | case '3': USE_BITS (OP_MASK_SA3, OP_SH_SA3); break; |
8188 | case '4': USE_BITS (OP_MASK_SA4, OP_SH_SA4); break; | |
8189 | case '5': USE_BITS (OP_MASK_IMM8, OP_SH_IMM8); break; | |
8190 | case '6': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8191 | case '7': USE_BITS (OP_MASK_DSPACC, OP_SH_DSPACC); break; | |
8192 | case '8': USE_BITS (OP_MASK_WRDSP, OP_SH_WRDSP); break; | |
8193 | case '9': USE_BITS (OP_MASK_DSPACC_S, OP_SH_DSPACC_S);break; | |
8194 | case '0': USE_BITS (OP_MASK_DSPSFT, OP_SH_DSPSFT); break; | |
8195 | case '\'': USE_BITS (OP_MASK_RDDSP, OP_SH_RDDSP); break; | |
8196 | case ':': USE_BITS (OP_MASK_DSPSFT_7, OP_SH_DSPSFT_7);break; | |
8197 | case '@': USE_BITS (OP_MASK_IMM10, OP_SH_IMM10); break; | |
ef2e4d86 CF |
8198 | case '!': USE_BITS (OP_MASK_MT_U, OP_SH_MT_U); break; |
8199 | case '$': USE_BITS (OP_MASK_MT_H, OP_SH_MT_H); break; | |
8200 | case '*': USE_BITS (OP_MASK_MTACC_T, OP_SH_MTACC_T); break; | |
8201 | case '&': USE_BITS (OP_MASK_MTACC_D, OP_SH_MTACC_D); break; | |
8202 | case 'g': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
252b5132 RH |
8203 | default: |
8204 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
8205 | c, opc->name, opc->args); | |
8206 | return 0; | |
8207 | } | |
8208 | #undef USE_BITS | |
8209 | if (used_bits != 0xffffffff) | |
8210 | { | |
8211 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
8212 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
8213 | return 0; | |
8214 | } | |
8215 | return 1; | |
8216 | } | |
8217 | ||
9bcd4f99 TS |
8218 | /* UDI immediates. */ |
8219 | struct mips_immed { | |
8220 | char type; | |
8221 | unsigned int shift; | |
8222 | unsigned long mask; | |
8223 | const char * desc; | |
8224 | }; | |
8225 | ||
8226 | static const struct mips_immed mips_immed[] = { | |
8227 | { '1', OP_SH_UDI1, OP_MASK_UDI1, 0}, | |
8228 | { '2', OP_SH_UDI2, OP_MASK_UDI2, 0}, | |
8229 | { '3', OP_SH_UDI3, OP_MASK_UDI3, 0}, | |
8230 | { '4', OP_SH_UDI4, OP_MASK_UDI4, 0}, | |
8231 | { 0,0,0,0 } | |
8232 | }; | |
8233 | ||
7455baf8 TS |
8234 | /* Check whether an odd floating-point register is allowed. */ |
8235 | static int | |
8236 | mips_oddfpreg_ok (const struct mips_opcode *insn, int argnum) | |
8237 | { | |
8238 | const char *s = insn->name; | |
8239 | ||
8240 | if (insn->pinfo == INSN_MACRO) | |
8241 | /* Let a macro pass, we'll catch it later when it is expanded. */ | |
8242 | return 1; | |
8243 | ||
8244 | if (ISA_HAS_ODD_SINGLE_FPR (mips_opts.isa)) | |
8245 | { | |
8246 | /* Allow odd registers for single-precision ops. */ | |
8247 | switch (insn->pinfo & (FP_S | FP_D)) | |
8248 | { | |
8249 | case FP_S: | |
8250 | case 0: | |
8251 | return 1; /* both single precision - ok */ | |
8252 | case FP_D: | |
8253 | return 0; /* both double precision - fail */ | |
8254 | default: | |
8255 | break; | |
8256 | } | |
8257 | ||
8258 | /* Cvt.w.x and cvt.x.w allow an odd register for a 'w' or 's' operand. */ | |
8259 | s = strchr (insn->name, '.'); | |
8260 | if (argnum == 2) | |
8261 | s = s != NULL ? strchr (s + 1, '.') : NULL; | |
8262 | return (s != NULL && (s[1] == 'w' || s[1] == 's')); | |
8263 | } | |
8264 | ||
8265 | /* Single-precision coprocessor loads and moves are OK too. */ | |
8266 | if ((insn->pinfo & FP_S) | |
8267 | && (insn->pinfo & (INSN_COPROC_MEMORY_DELAY | INSN_STORE_MEMORY | |
8268 | | INSN_LOAD_COPROC_DELAY | INSN_COPROC_MOVE_DELAY))) | |
8269 | return 1; | |
8270 | ||
8271 | return 0; | |
8272 | } | |
8273 | ||
252b5132 RH |
8274 | /* This routine assembles an instruction into its binary format. As a |
8275 | side effect, it sets one of the global variables imm_reloc or | |
8276 | offset_reloc to the type of relocation to do if one of the operands | |
8277 | is an address expression. */ | |
8278 | ||
8279 | static void | |
17a2f251 | 8280 | mips_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
8281 | { |
8282 | char *s; | |
8283 | const char *args; | |
43841e91 | 8284 | char c = 0; |
252b5132 RH |
8285 | struct mips_opcode *insn; |
8286 | char *argsStart; | |
8287 | unsigned int regno; | |
8288 | unsigned int lastregno = 0; | |
af7ee8bf | 8289 | unsigned int lastpos = 0; |
071742cf | 8290 | unsigned int limlo, limhi; |
252b5132 RH |
8291 | char *s_reset; |
8292 | char save_c = 0; | |
74cd071d | 8293 | offsetT min_range, max_range; |
707bfff6 TS |
8294 | int argnum; |
8295 | unsigned int rtype; | |
252b5132 RH |
8296 | |
8297 | insn_error = NULL; | |
8298 | ||
8299 | /* If the instruction contains a '.', we first try to match an instruction | |
8300 | including the '.'. Then we try again without the '.'. */ | |
8301 | insn = NULL; | |
3882b010 | 8302 | for (s = str; *s != '\0' && !ISSPACE (*s); ++s) |
252b5132 RH |
8303 | continue; |
8304 | ||
8305 | /* If we stopped on whitespace, then replace the whitespace with null for | |
8306 | the call to hash_find. Save the character we replaced just in case we | |
8307 | have to re-parse the instruction. */ | |
3882b010 | 8308 | if (ISSPACE (*s)) |
252b5132 RH |
8309 | { |
8310 | save_c = *s; | |
8311 | *s++ = '\0'; | |
8312 | } | |
bdaaa2e1 | 8313 | |
252b5132 RH |
8314 | insn = (struct mips_opcode *) hash_find (op_hash, str); |
8315 | ||
8316 | /* If we didn't find the instruction in the opcode table, try again, but | |
8317 | this time with just the instruction up to, but not including the | |
8318 | first '.'. */ | |
8319 | if (insn == NULL) | |
8320 | { | |
bdaaa2e1 | 8321 | /* Restore the character we overwrite above (if any). */ |
252b5132 RH |
8322 | if (save_c) |
8323 | *(--s) = save_c; | |
8324 | ||
8325 | /* Scan up to the first '.' or whitespace. */ | |
3882b010 L |
8326 | for (s = str; |
8327 | *s != '\0' && *s != '.' && !ISSPACE (*s); | |
8328 | ++s) | |
252b5132 RH |
8329 | continue; |
8330 | ||
8331 | /* If we did not find a '.', then we can quit now. */ | |
8332 | if (*s != '.') | |
8333 | { | |
8334 | insn_error = "unrecognized opcode"; | |
8335 | return; | |
8336 | } | |
8337 | ||
8338 | /* Lookup the instruction in the hash table. */ | |
8339 | *s++ = '\0'; | |
8340 | if ((insn = (struct mips_opcode *) hash_find (op_hash, str)) == NULL) | |
8341 | { | |
8342 | insn_error = "unrecognized opcode"; | |
8343 | return; | |
8344 | } | |
252b5132 RH |
8345 | } |
8346 | ||
8347 | argsStart = s; | |
8348 | for (;;) | |
8349 | { | |
b34976b6 | 8350 | bfd_boolean ok; |
252b5132 RH |
8351 | |
8352 | assert (strcmp (insn->name, str) == 0); | |
8353 | ||
1f25f5d3 CD |
8354 | if (OPCODE_IS_MEMBER (insn, |
8355 | (mips_opts.isa | |
9b3f89ee TS |
8356 | /* We don't check for mips_opts.mips16 here since |
8357 | we want to allow jalx if -mips16 was specified | |
8358 | on the command line. */ | |
3396de36 | 8359 | | (file_ase_mips16 ? INSN_MIPS16 : 0) |
deec1734 | 8360 | | (mips_opts.ase_mdmx ? INSN_MDMX : 0) |
74cd071d | 8361 | | (mips_opts.ase_dsp ? INSN_DSP : 0) |
65263ce3 TS |
8362 | | ((mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE) |
8363 | ? INSN_DSP64 : 0) | |
ef2e4d86 | 8364 | | (mips_opts.ase_mt ? INSN_MT : 0) |
e16bfa71 TS |
8365 | | (mips_opts.ase_mips3d ? INSN_MIPS3D : 0) |
8366 | | (mips_opts.ase_smartmips ? INSN_SMARTMIPS : 0)), | |
fef14a42 | 8367 | mips_opts.arch)) |
b34976b6 | 8368 | ok = TRUE; |
bdaaa2e1 | 8369 | else |
b34976b6 | 8370 | ok = FALSE; |
bdaaa2e1 | 8371 | |
252b5132 RH |
8372 | if (insn->pinfo != INSN_MACRO) |
8373 | { | |
fef14a42 | 8374 | if (mips_opts.arch == CPU_R4650 && (insn->pinfo & FP_D) != 0) |
b34976b6 | 8375 | ok = FALSE; |
252b5132 RH |
8376 | } |
8377 | ||
8378 | if (! ok) | |
8379 | { | |
8380 | if (insn + 1 < &mips_opcodes[NUMOPCODES] | |
8381 | && strcmp (insn->name, insn[1].name) == 0) | |
8382 | { | |
8383 | ++insn; | |
8384 | continue; | |
8385 | } | |
252b5132 | 8386 | else |
beae10d5 | 8387 | { |
268f6bed L |
8388 | if (!insn_error) |
8389 | { | |
8390 | static char buf[100]; | |
fef14a42 TS |
8391 | sprintf (buf, |
8392 | _("opcode not supported on this processor: %s (%s)"), | |
8393 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
8394 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
268f6bed L |
8395 | insn_error = buf; |
8396 | } | |
8397 | if (save_c) | |
8398 | *(--s) = save_c; | |
2bd7f1f3 | 8399 | return; |
252b5132 | 8400 | } |
252b5132 RH |
8401 | } |
8402 | ||
1e915849 | 8403 | create_insn (ip, insn); |
268f6bed | 8404 | insn_error = NULL; |
707bfff6 | 8405 | argnum = 1; |
252b5132 RH |
8406 | for (args = insn->args;; ++args) |
8407 | { | |
deec1734 CD |
8408 | int is_mdmx; |
8409 | ||
ad8d3bb3 | 8410 | s += strspn (s, " \t"); |
deec1734 | 8411 | is_mdmx = 0; |
252b5132 RH |
8412 | switch (*args) |
8413 | { | |
8414 | case '\0': /* end of args */ | |
8415 | if (*s == '\0') | |
8416 | return; | |
8417 | break; | |
8418 | ||
74cd071d CF |
8419 | case '3': /* dsp 3-bit unsigned immediate in bit 21 */ |
8420 | my_getExpression (&imm_expr, s); | |
8421 | check_absolute_expr (ip, &imm_expr); | |
8422 | if (imm_expr.X_add_number & ~OP_MASK_SA3) | |
8423 | { | |
a9e24354 TS |
8424 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8425 | OP_MASK_SA3, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8426 | } |
a9e24354 | 8427 | INSERT_OPERAND (SA3, *ip, imm_expr.X_add_number); |
74cd071d CF |
8428 | imm_expr.X_op = O_absent; |
8429 | s = expr_end; | |
8430 | continue; | |
8431 | ||
8432 | case '4': /* dsp 4-bit unsigned immediate in bit 21 */ | |
8433 | my_getExpression (&imm_expr, s); | |
8434 | check_absolute_expr (ip, &imm_expr); | |
8435 | if (imm_expr.X_add_number & ~OP_MASK_SA4) | |
8436 | { | |
a9e24354 TS |
8437 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8438 | OP_MASK_SA4, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8439 | } |
a9e24354 | 8440 | INSERT_OPERAND (SA4, *ip, imm_expr.X_add_number); |
74cd071d CF |
8441 | imm_expr.X_op = O_absent; |
8442 | s = expr_end; | |
8443 | continue; | |
8444 | ||
8445 | case '5': /* dsp 8-bit unsigned immediate in bit 16 */ | |
8446 | my_getExpression (&imm_expr, s); | |
8447 | check_absolute_expr (ip, &imm_expr); | |
8448 | if (imm_expr.X_add_number & ~OP_MASK_IMM8) | |
8449 | { | |
a9e24354 TS |
8450 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8451 | OP_MASK_IMM8, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8452 | } |
a9e24354 | 8453 | INSERT_OPERAND (IMM8, *ip, imm_expr.X_add_number); |
74cd071d CF |
8454 | imm_expr.X_op = O_absent; |
8455 | s = expr_end; | |
8456 | continue; | |
8457 | ||
8458 | case '6': /* dsp 5-bit unsigned immediate in bit 21 */ | |
8459 | my_getExpression (&imm_expr, s); | |
8460 | check_absolute_expr (ip, &imm_expr); | |
8461 | if (imm_expr.X_add_number & ~OP_MASK_RS) | |
8462 | { | |
a9e24354 TS |
8463 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8464 | OP_MASK_RS, (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8465 | } |
a9e24354 | 8466 | INSERT_OPERAND (RS, *ip, imm_expr.X_add_number); |
74cd071d CF |
8467 | imm_expr.X_op = O_absent; |
8468 | s = expr_end; | |
8469 | continue; | |
8470 | ||
8471 | case '7': /* four dsp accumulators in bits 11,12 */ | |
8472 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8473 | s[3] >= '0' && s[3] <= '3') | |
8474 | { | |
8475 | regno = s[3] - '0'; | |
8476 | s += 4; | |
a9e24354 | 8477 | INSERT_OPERAND (DSPACC, *ip, regno); |
74cd071d CF |
8478 | continue; |
8479 | } | |
8480 | else | |
8481 | as_bad (_("Invalid dsp acc register")); | |
8482 | break; | |
8483 | ||
8484 | case '8': /* dsp 6-bit unsigned immediate in bit 11 */ | |
8485 | my_getExpression (&imm_expr, s); | |
8486 | check_absolute_expr (ip, &imm_expr); | |
8487 | if (imm_expr.X_add_number & ~OP_MASK_WRDSP) | |
8488 | { | |
a9e24354 TS |
8489 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8490 | OP_MASK_WRDSP, | |
8491 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8492 | } |
a9e24354 | 8493 | INSERT_OPERAND (WRDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
8494 | imm_expr.X_op = O_absent; |
8495 | s = expr_end; | |
8496 | continue; | |
8497 | ||
8498 | case '9': /* four dsp accumulators in bits 21,22 */ | |
8499 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8500 | s[3] >= '0' && s[3] <= '3') | |
8501 | { | |
8502 | regno = s[3] - '0'; | |
8503 | s += 4; | |
a9e24354 | 8504 | INSERT_OPERAND (DSPACC_S, *ip, regno); |
74cd071d CF |
8505 | continue; |
8506 | } | |
8507 | else | |
8508 | as_bad (_("Invalid dsp acc register")); | |
8509 | break; | |
8510 | ||
8511 | case '0': /* dsp 6-bit signed immediate in bit 20 */ | |
8512 | my_getExpression (&imm_expr, s); | |
8513 | check_absolute_expr (ip, &imm_expr); | |
8514 | min_range = -((OP_MASK_DSPSFT + 1) >> 1); | |
8515 | max_range = ((OP_MASK_DSPSFT + 1) >> 1) - 1; | |
8516 | if (imm_expr.X_add_number < min_range || | |
8517 | imm_expr.X_add_number > max_range) | |
8518 | { | |
a9e24354 TS |
8519 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8520 | (long) min_range, (long) max_range, | |
8521 | (long) imm_expr.X_add_number); | |
74cd071d | 8522 | } |
a9e24354 | 8523 | INSERT_OPERAND (DSPSFT, *ip, imm_expr.X_add_number); |
74cd071d CF |
8524 | imm_expr.X_op = O_absent; |
8525 | s = expr_end; | |
8526 | continue; | |
8527 | ||
8528 | case '\'': /* dsp 6-bit unsigned immediate in bit 16 */ | |
8529 | my_getExpression (&imm_expr, s); | |
8530 | check_absolute_expr (ip, &imm_expr); | |
8531 | if (imm_expr.X_add_number & ~OP_MASK_RDDSP) | |
8532 | { | |
a9e24354 TS |
8533 | as_bad (_("DSP immediate not in range 0..%d (%lu)"), |
8534 | OP_MASK_RDDSP, | |
8535 | (unsigned long) imm_expr.X_add_number); | |
74cd071d | 8536 | } |
a9e24354 | 8537 | INSERT_OPERAND (RDDSP, *ip, imm_expr.X_add_number); |
74cd071d CF |
8538 | imm_expr.X_op = O_absent; |
8539 | s = expr_end; | |
8540 | continue; | |
8541 | ||
8542 | case ':': /* dsp 7-bit signed immediate in bit 19 */ | |
8543 | my_getExpression (&imm_expr, s); | |
8544 | check_absolute_expr (ip, &imm_expr); | |
8545 | min_range = -((OP_MASK_DSPSFT_7 + 1) >> 1); | |
8546 | max_range = ((OP_MASK_DSPSFT_7 + 1) >> 1) - 1; | |
8547 | if (imm_expr.X_add_number < min_range || | |
8548 | imm_expr.X_add_number > max_range) | |
8549 | { | |
a9e24354 TS |
8550 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8551 | (long) min_range, (long) max_range, | |
8552 | (long) imm_expr.X_add_number); | |
74cd071d | 8553 | } |
a9e24354 | 8554 | INSERT_OPERAND (DSPSFT_7, *ip, imm_expr.X_add_number); |
74cd071d CF |
8555 | imm_expr.X_op = O_absent; |
8556 | s = expr_end; | |
8557 | continue; | |
8558 | ||
8559 | case '@': /* dsp 10-bit signed immediate in bit 16 */ | |
8560 | my_getExpression (&imm_expr, s); | |
8561 | check_absolute_expr (ip, &imm_expr); | |
8562 | min_range = -((OP_MASK_IMM10 + 1) >> 1); | |
8563 | max_range = ((OP_MASK_IMM10 + 1) >> 1) - 1; | |
8564 | if (imm_expr.X_add_number < min_range || | |
8565 | imm_expr.X_add_number > max_range) | |
8566 | { | |
a9e24354 TS |
8567 | as_bad (_("DSP immediate not in range %ld..%ld (%ld)"), |
8568 | (long) min_range, (long) max_range, | |
8569 | (long) imm_expr.X_add_number); | |
74cd071d | 8570 | } |
a9e24354 | 8571 | INSERT_OPERAND (IMM10, *ip, imm_expr.X_add_number); |
74cd071d CF |
8572 | imm_expr.X_op = O_absent; |
8573 | s = expr_end; | |
8574 | continue; | |
8575 | ||
a9e24354 | 8576 | case '!': /* MT usermode flag bit. */ |
ef2e4d86 CF |
8577 | my_getExpression (&imm_expr, s); |
8578 | check_absolute_expr (ip, &imm_expr); | |
8579 | if (imm_expr.X_add_number & ~OP_MASK_MT_U) | |
a9e24354 TS |
8580 | as_bad (_("MT usermode bit not 0 or 1 (%lu)"), |
8581 | (unsigned long) imm_expr.X_add_number); | |
8582 | INSERT_OPERAND (MT_U, *ip, imm_expr.X_add_number); | |
ef2e4d86 CF |
8583 | imm_expr.X_op = O_absent; |
8584 | s = expr_end; | |
8585 | continue; | |
8586 | ||
a9e24354 | 8587 | case '$': /* MT load high flag bit. */ |
ef2e4d86 CF |
8588 | my_getExpression (&imm_expr, s); |
8589 | check_absolute_expr (ip, &imm_expr); | |
8590 | if (imm_expr.X_add_number & ~OP_MASK_MT_H) | |
a9e24354 TS |
8591 | as_bad (_("MT load high bit not 0 or 1 (%lu)"), |
8592 | (unsigned long) imm_expr.X_add_number); | |
8593 | INSERT_OPERAND (MT_H, *ip, imm_expr.X_add_number); | |
ef2e4d86 CF |
8594 | imm_expr.X_op = O_absent; |
8595 | s = expr_end; | |
8596 | continue; | |
8597 | ||
8598 | case '*': /* four dsp accumulators in bits 18,19 */ | |
8599 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8600 | s[3] >= '0' && s[3] <= '3') | |
8601 | { | |
8602 | regno = s[3] - '0'; | |
8603 | s += 4; | |
a9e24354 | 8604 | INSERT_OPERAND (MTACC_T, *ip, regno); |
ef2e4d86 CF |
8605 | continue; |
8606 | } | |
8607 | else | |
8608 | as_bad (_("Invalid dsp/smartmips acc register")); | |
8609 | break; | |
8610 | ||
8611 | case '&': /* four dsp accumulators in bits 13,14 */ | |
8612 | if (s[0] == '$' && s[1] == 'a' && s[2] == 'c' && | |
8613 | s[3] >= '0' && s[3] <= '3') | |
8614 | { | |
8615 | regno = s[3] - '0'; | |
8616 | s += 4; | |
a9e24354 | 8617 | INSERT_OPERAND (MTACC_D, *ip, regno); |
ef2e4d86 CF |
8618 | continue; |
8619 | } | |
8620 | else | |
8621 | as_bad (_("Invalid dsp/smartmips acc register")); | |
8622 | break; | |
8623 | ||
252b5132 | 8624 | case ',': |
a339155f | 8625 | ++argnum; |
252b5132 RH |
8626 | if (*s++ == *args) |
8627 | continue; | |
8628 | s--; | |
8629 | switch (*++args) | |
8630 | { | |
8631 | case 'r': | |
8632 | case 'v': | |
bf12938e | 8633 | INSERT_OPERAND (RS, *ip, lastregno); |
252b5132 RH |
8634 | continue; |
8635 | ||
8636 | case 'w': | |
bf12938e | 8637 | INSERT_OPERAND (RT, *ip, lastregno); |
38487616 TS |
8638 | continue; |
8639 | ||
252b5132 | 8640 | case 'W': |
bf12938e | 8641 | INSERT_OPERAND (FT, *ip, lastregno); |
252b5132 RH |
8642 | continue; |
8643 | ||
8644 | case 'V': | |
bf12938e | 8645 | INSERT_OPERAND (FS, *ip, lastregno); |
252b5132 RH |
8646 | continue; |
8647 | } | |
8648 | break; | |
8649 | ||
8650 | case '(': | |
8651 | /* Handle optional base register. | |
8652 | Either the base register is omitted or | |
bdaaa2e1 | 8653 | we must have a left paren. */ |
252b5132 RH |
8654 | /* This is dependent on the next operand specifier |
8655 | is a base register specification. */ | |
8656 | assert (args[1] == 'b' || args[1] == '5' | |
8657 | || args[1] == '-' || args[1] == '4'); | |
8658 | if (*s == '\0') | |
8659 | return; | |
8660 | ||
8661 | case ')': /* these must match exactly */ | |
60b63b72 RS |
8662 | case '[': |
8663 | case ']': | |
252b5132 RH |
8664 | if (*s++ == *args) |
8665 | continue; | |
8666 | break; | |
8667 | ||
af7ee8bf CD |
8668 | case '+': /* Opcode extension character. */ |
8669 | switch (*++args) | |
8670 | { | |
9bcd4f99 TS |
8671 | case '1': /* UDI immediates. */ |
8672 | case '2': | |
8673 | case '3': | |
8674 | case '4': | |
8675 | { | |
8676 | const struct mips_immed *imm = mips_immed; | |
8677 | ||
8678 | while (imm->type && imm->type != *args) | |
8679 | ++imm; | |
8680 | if (! imm->type) | |
8681 | internalError (); | |
8682 | my_getExpression (&imm_expr, s); | |
8683 | check_absolute_expr (ip, &imm_expr); | |
8684 | if ((unsigned long) imm_expr.X_add_number & ~imm->mask) | |
8685 | { | |
8686 | as_warn (_("Illegal %s number (%lu, 0x%lx)"), | |
8687 | imm->desc ? imm->desc : ip->insn_mo->name, | |
8688 | (unsigned long) imm_expr.X_add_number, | |
8689 | (unsigned long) imm_expr.X_add_number); | |
8690 | imm_expr.X_add_number &= imm->mask; | |
8691 | } | |
8692 | ip->insn_opcode |= ((unsigned long) imm_expr.X_add_number | |
8693 | << imm->shift); | |
8694 | imm_expr.X_op = O_absent; | |
8695 | s = expr_end; | |
8696 | } | |
8697 | continue; | |
8698 | ||
071742cf CD |
8699 | case 'A': /* ins/ext position, becomes LSB. */ |
8700 | limlo = 0; | |
8701 | limhi = 31; | |
5f74bc13 CD |
8702 | goto do_lsb; |
8703 | case 'E': | |
8704 | limlo = 32; | |
8705 | limhi = 63; | |
8706 | goto do_lsb; | |
8707 | do_lsb: | |
071742cf CD |
8708 | my_getExpression (&imm_expr, s); |
8709 | check_absolute_expr (ip, &imm_expr); | |
8710 | if ((unsigned long) imm_expr.X_add_number < limlo | |
8711 | || (unsigned long) imm_expr.X_add_number > limhi) | |
8712 | { | |
8713 | as_bad (_("Improper position (%lu)"), | |
8714 | (unsigned long) imm_expr.X_add_number); | |
8715 | imm_expr.X_add_number = limlo; | |
8716 | } | |
8717 | lastpos = imm_expr.X_add_number; | |
bf12938e | 8718 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); |
071742cf CD |
8719 | imm_expr.X_op = O_absent; |
8720 | s = expr_end; | |
8721 | continue; | |
8722 | ||
8723 | case 'B': /* ins size, becomes MSB. */ | |
8724 | limlo = 1; | |
8725 | limhi = 32; | |
5f74bc13 CD |
8726 | goto do_msb; |
8727 | case 'F': | |
8728 | limlo = 33; | |
8729 | limhi = 64; | |
8730 | goto do_msb; | |
8731 | do_msb: | |
071742cf CD |
8732 | my_getExpression (&imm_expr, s); |
8733 | check_absolute_expr (ip, &imm_expr); | |
8734 | /* Check for negative input so that small negative numbers | |
8735 | will not succeed incorrectly. The checks against | |
8736 | (pos+size) transitively check "size" itself, | |
8737 | assuming that "pos" is reasonable. */ | |
8738 | if ((long) imm_expr.X_add_number < 0 | |
8739 | || ((unsigned long) imm_expr.X_add_number | |
8740 | + lastpos) < limlo | |
8741 | || ((unsigned long) imm_expr.X_add_number | |
8742 | + lastpos) > limhi) | |
8743 | { | |
8744 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
8745 | (unsigned long) imm_expr.X_add_number, | |
8746 | (unsigned long) lastpos); | |
8747 | imm_expr.X_add_number = limlo - lastpos; | |
8748 | } | |
bf12938e RS |
8749 | INSERT_OPERAND (INSMSB, *ip, |
8750 | lastpos + imm_expr.X_add_number - 1); | |
071742cf CD |
8751 | imm_expr.X_op = O_absent; |
8752 | s = expr_end; | |
8753 | continue; | |
8754 | ||
8755 | case 'C': /* ext size, becomes MSBD. */ | |
8756 | limlo = 1; | |
8757 | limhi = 32; | |
5f74bc13 CD |
8758 | goto do_msbd; |
8759 | case 'G': | |
8760 | limlo = 33; | |
8761 | limhi = 64; | |
8762 | goto do_msbd; | |
8763 | case 'H': | |
8764 | limlo = 33; | |
8765 | limhi = 64; | |
8766 | goto do_msbd; | |
8767 | do_msbd: | |
071742cf CD |
8768 | my_getExpression (&imm_expr, s); |
8769 | check_absolute_expr (ip, &imm_expr); | |
8770 | /* Check for negative input so that small negative numbers | |
8771 | will not succeed incorrectly. The checks against | |
8772 | (pos+size) transitively check "size" itself, | |
8773 | assuming that "pos" is reasonable. */ | |
8774 | if ((long) imm_expr.X_add_number < 0 | |
8775 | || ((unsigned long) imm_expr.X_add_number | |
8776 | + lastpos) < limlo | |
8777 | || ((unsigned long) imm_expr.X_add_number | |
8778 | + lastpos) > limhi) | |
8779 | { | |
8780 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
8781 | (unsigned long) imm_expr.X_add_number, | |
8782 | (unsigned long) lastpos); | |
8783 | imm_expr.X_add_number = limlo - lastpos; | |
8784 | } | |
bf12938e | 8785 | INSERT_OPERAND (EXTMSBD, *ip, imm_expr.X_add_number - 1); |
071742cf CD |
8786 | imm_expr.X_op = O_absent; |
8787 | s = expr_end; | |
8788 | continue; | |
af7ee8bf | 8789 | |
bbcc0807 CD |
8790 | case 'D': |
8791 | /* +D is for disassembly only; never match. */ | |
8792 | break; | |
8793 | ||
5f74bc13 CD |
8794 | case 'I': |
8795 | /* "+I" is like "I", except that imm2_expr is used. */ | |
8796 | my_getExpression (&imm2_expr, s); | |
8797 | if (imm2_expr.X_op != O_big | |
8798 | && imm2_expr.X_op != O_constant) | |
8799 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
8800 | if (HAVE_32BIT_GPRS) |
8801 | normalize_constant_expr (&imm2_expr); | |
5f74bc13 CD |
8802 | s = expr_end; |
8803 | continue; | |
8804 | ||
707bfff6 | 8805 | case 'T': /* Coprocessor register. */ |
ef2e4d86 CF |
8806 | /* +T is for disassembly only; never match. */ |
8807 | break; | |
8808 | ||
707bfff6 | 8809 | case 't': /* Coprocessor register number. */ |
ef2e4d86 CF |
8810 | if (s[0] == '$' && ISDIGIT (s[1])) |
8811 | { | |
8812 | ++s; | |
8813 | regno = 0; | |
8814 | do | |
8815 | { | |
8816 | regno *= 10; | |
8817 | regno += *s - '0'; | |
8818 | ++s; | |
8819 | } | |
8820 | while (ISDIGIT (*s)); | |
8821 | if (regno > 31) | |
8822 | as_bad (_("Invalid register number (%d)"), regno); | |
8823 | else | |
8824 | { | |
a9e24354 | 8825 | INSERT_OPERAND (RT, *ip, regno); |
ef2e4d86 CF |
8826 | continue; |
8827 | } | |
8828 | } | |
8829 | else | |
8830 | as_bad (_("Invalid coprocessor 0 register number")); | |
8831 | break; | |
8832 | ||
af7ee8bf CD |
8833 | default: |
8834 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
8835 | *args, insn->name, insn->args); | |
8836 | /* Further processing is fruitless. */ | |
8837 | return; | |
8838 | } | |
8839 | break; | |
8840 | ||
252b5132 RH |
8841 | case '<': /* must be at least one digit */ |
8842 | /* | |
8843 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
8844 | * than 31 or less than 0, then the shift amount should be |
8845 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
8846 | * We issue a warning and mask out all but the low 5 bits. |
8847 | */ | |
8848 | my_getExpression (&imm_expr, s); | |
8849 | check_absolute_expr (ip, &imm_expr); | |
8850 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
8851 | as_warn (_("Improper shift amount (%lu)"), |
8852 | (unsigned long) imm_expr.X_add_number); | |
8853 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number); | |
252b5132 RH |
8854 | imm_expr.X_op = O_absent; |
8855 | s = expr_end; | |
8856 | continue; | |
8857 | ||
8858 | case '>': /* shift amount minus 32 */ | |
8859 | my_getExpression (&imm_expr, s); | |
8860 | check_absolute_expr (ip, &imm_expr); | |
8861 | if ((unsigned long) imm_expr.X_add_number < 32 | |
8862 | || (unsigned long) imm_expr.X_add_number > 63) | |
8863 | break; | |
bf12938e | 8864 | INSERT_OPERAND (SHAMT, *ip, imm_expr.X_add_number - 32); |
252b5132 RH |
8865 | imm_expr.X_op = O_absent; |
8866 | s = expr_end; | |
8867 | continue; | |
8868 | ||
252b5132 RH |
8869 | case 'k': /* cache code */ |
8870 | case 'h': /* prefx code */ | |
8871 | my_getExpression (&imm_expr, s); | |
8872 | check_absolute_expr (ip, &imm_expr); | |
8873 | if ((unsigned long) imm_expr.X_add_number > 31) | |
bf12938e RS |
8874 | as_warn (_("Invalid value for `%s' (%lu)"), |
8875 | ip->insn_mo->name, | |
8876 | (unsigned long) imm_expr.X_add_number); | |
252b5132 | 8877 | if (*args == 'k') |
bf12938e | 8878 | INSERT_OPERAND (CACHE, *ip, imm_expr.X_add_number); |
252b5132 | 8879 | else |
bf12938e | 8880 | INSERT_OPERAND (PREFX, *ip, imm_expr.X_add_number); |
252b5132 RH |
8881 | imm_expr.X_op = O_absent; |
8882 | s = expr_end; | |
8883 | continue; | |
8884 | ||
8885 | case 'c': /* break code */ | |
8886 | my_getExpression (&imm_expr, s); | |
8887 | check_absolute_expr (ip, &imm_expr); | |
a9e24354 TS |
8888 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE) |
8889 | as_warn (_("Code for %s not in range 0..1023 (%lu)"), | |
8890 | ip->insn_mo->name, | |
bf12938e RS |
8891 | (unsigned long) imm_expr.X_add_number); |
8892 | INSERT_OPERAND (CODE, *ip, imm_expr.X_add_number); | |
252b5132 RH |
8893 | imm_expr.X_op = O_absent; |
8894 | s = expr_end; | |
8895 | continue; | |
8896 | ||
8897 | case 'q': /* lower break code */ | |
8898 | my_getExpression (&imm_expr, s); | |
8899 | check_absolute_expr (ip, &imm_expr); | |
a9e24354 TS |
8900 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE2) |
8901 | as_warn (_("Lower code for %s not in range 0..1023 (%lu)"), | |
8902 | ip->insn_mo->name, | |
bf12938e RS |
8903 | (unsigned long) imm_expr.X_add_number); |
8904 | INSERT_OPERAND (CODE2, *ip, imm_expr.X_add_number); | |
252b5132 RH |
8905 | imm_expr.X_op = O_absent; |
8906 | s = expr_end; | |
8907 | continue; | |
8908 | ||
4372b673 | 8909 | case 'B': /* 20-bit syscall/break code. */ |
156c2f8b | 8910 | my_getExpression (&imm_expr, s); |
156c2f8b | 8911 | check_absolute_expr (ip, &imm_expr); |
793b27f4 | 8912 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE20) |
a9e24354 TS |
8913 | as_warn (_("Code for %s not in range 0..1048575 (%lu)"), |
8914 | ip->insn_mo->name, | |
793b27f4 | 8915 | (unsigned long) imm_expr.X_add_number); |
bf12938e | 8916 | INSERT_OPERAND (CODE20, *ip, imm_expr.X_add_number); |
252b5132 RH |
8917 | imm_expr.X_op = O_absent; |
8918 | s = expr_end; | |
8919 | continue; | |
8920 | ||
98d3f06f | 8921 | case 'C': /* Coprocessor code */ |
beae10d5 | 8922 | my_getExpression (&imm_expr, s); |
252b5132 | 8923 | check_absolute_expr (ip, &imm_expr); |
a9e24354 | 8924 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_COPZ) |
252b5132 | 8925 | { |
793b27f4 TS |
8926 | as_warn (_("Coproccesor code > 25 bits (%lu)"), |
8927 | (unsigned long) imm_expr.X_add_number); | |
a9e24354 | 8928 | imm_expr.X_add_number &= OP_MASK_COPZ; |
252b5132 | 8929 | } |
a9e24354 | 8930 | INSERT_OPERAND (COPZ, *ip, imm_expr.X_add_number); |
beae10d5 KH |
8931 | imm_expr.X_op = O_absent; |
8932 | s = expr_end; | |
8933 | continue; | |
252b5132 | 8934 | |
4372b673 NC |
8935 | case 'J': /* 19-bit wait code. */ |
8936 | my_getExpression (&imm_expr, s); | |
8937 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 8938 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
a9e24354 TS |
8939 | { |
8940 | as_warn (_("Illegal 19-bit code (%lu)"), | |
8941 | (unsigned long) imm_expr.X_add_number); | |
8942 | imm_expr.X_add_number &= OP_MASK_CODE19; | |
8943 | } | |
bf12938e | 8944 | INSERT_OPERAND (CODE19, *ip, imm_expr.X_add_number); |
4372b673 NC |
8945 | imm_expr.X_op = O_absent; |
8946 | s = expr_end; | |
8947 | continue; | |
8948 | ||
707bfff6 | 8949 | case 'P': /* Performance register. */ |
beae10d5 | 8950 | my_getExpression (&imm_expr, s); |
252b5132 | 8951 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 8952 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
bf12938e RS |
8953 | as_warn (_("Invalid performance register (%lu)"), |
8954 | (unsigned long) imm_expr.X_add_number); | |
8955 | INSERT_OPERAND (PERFREG, *ip, imm_expr.X_add_number); | |
beae10d5 KH |
8956 | imm_expr.X_op = O_absent; |
8957 | s = expr_end; | |
8958 | continue; | |
252b5132 | 8959 | |
707bfff6 TS |
8960 | case 'G': /* Coprocessor destination register. */ |
8961 | if (((ip->insn_opcode >> OP_SH_OP) & OP_MASK_OP) == OP_OP_COP0) | |
8962 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_CP0, ®no); | |
8963 | else | |
8964 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
a9e24354 | 8965 | INSERT_OPERAND (RD, *ip, regno); |
707bfff6 TS |
8966 | if (ok) |
8967 | { | |
8968 | lastregno = regno; | |
8969 | continue; | |
8970 | } | |
8971 | else | |
8972 | break; | |
8973 | ||
252b5132 RH |
8974 | case 'b': /* base register */ |
8975 | case 'd': /* destination register */ | |
8976 | case 's': /* source register */ | |
8977 | case 't': /* target register */ | |
8978 | case 'r': /* both target and source */ | |
8979 | case 'v': /* both dest and source */ | |
8980 | case 'w': /* both dest and target */ | |
8981 | case 'E': /* coprocessor target register */ | |
af7ee8bf | 8982 | case 'K': /* 'rdhwr' destination register */ |
252b5132 RH |
8983 | case 'x': /* ignore register name */ |
8984 | case 'z': /* must be zero register */ | |
4372b673 | 8985 | case 'U': /* destination register (clo/clz). */ |
ef2e4d86 | 8986 | case 'g': /* coprocessor destination register */ |
707bfff6 TS |
8987 | s_reset = s; |
8988 | if (*args == 'E' || *args == 'K') | |
8989 | ok = reg_lookup (&s, RTYPE_NUM, ®no); | |
8990 | else | |
8991 | { | |
8992 | ok = reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no); | |
8993 | if (regno == AT && ! mips_opts.noat) | |
8994 | as_warn ("Used $at without \".set noat\""); | |
8995 | } | |
8996 | if (ok) | |
252b5132 | 8997 | { |
252b5132 RH |
8998 | c = *args; |
8999 | if (*s == ' ') | |
f9419b05 | 9000 | ++s; |
252b5132 RH |
9001 | if (args[1] != *s) |
9002 | { | |
9003 | if (c == 'r' || c == 'v' || c == 'w') | |
9004 | { | |
9005 | regno = lastregno; | |
9006 | s = s_reset; | |
f9419b05 | 9007 | ++args; |
252b5132 RH |
9008 | } |
9009 | } | |
9010 | /* 'z' only matches $0. */ | |
9011 | if (c == 'z' && regno != 0) | |
9012 | break; | |
9013 | ||
bdaaa2e1 KH |
9014 | /* Now that we have assembled one operand, we use the args string |
9015 | * to figure out where it goes in the instruction. */ | |
252b5132 RH |
9016 | switch (c) |
9017 | { | |
9018 | case 'r': | |
9019 | case 's': | |
9020 | case 'v': | |
9021 | case 'b': | |
bf12938e | 9022 | INSERT_OPERAND (RS, *ip, regno); |
252b5132 RH |
9023 | break; |
9024 | case 'd': | |
9025 | case 'G': | |
af7ee8bf | 9026 | case 'K': |
ef2e4d86 | 9027 | case 'g': |
bf12938e | 9028 | INSERT_OPERAND (RD, *ip, regno); |
252b5132 | 9029 | break; |
4372b673 | 9030 | case 'U': |
bf12938e RS |
9031 | INSERT_OPERAND (RD, *ip, regno); |
9032 | INSERT_OPERAND (RT, *ip, regno); | |
4372b673 | 9033 | break; |
252b5132 RH |
9034 | case 'w': |
9035 | case 't': | |
9036 | case 'E': | |
bf12938e | 9037 | INSERT_OPERAND (RT, *ip, regno); |
252b5132 RH |
9038 | break; |
9039 | case 'x': | |
9040 | /* This case exists because on the r3000 trunc | |
9041 | expands into a macro which requires a gp | |
9042 | register. On the r6000 or r4000 it is | |
9043 | assembled into a single instruction which | |
9044 | ignores the register. Thus the insn version | |
9045 | is MIPS_ISA2 and uses 'x', and the macro | |
9046 | version is MIPS_ISA1 and uses 't'. */ | |
9047 | break; | |
9048 | case 'z': | |
9049 | /* This case is for the div instruction, which | |
9050 | acts differently if the destination argument | |
9051 | is $0. This only matches $0, and is checked | |
9052 | outside the switch. */ | |
9053 | break; | |
9054 | case 'D': | |
9055 | /* Itbl operand; not yet implemented. FIXME ?? */ | |
9056 | break; | |
9057 | /* What about all other operands like 'i', which | |
9058 | can be specified in the opcode table? */ | |
9059 | } | |
9060 | lastregno = regno; | |
9061 | continue; | |
9062 | } | |
252b5132 RH |
9063 | switch (*args++) |
9064 | { | |
9065 | case 'r': | |
9066 | case 'v': | |
bf12938e | 9067 | INSERT_OPERAND (RS, *ip, lastregno); |
252b5132 RH |
9068 | continue; |
9069 | case 'w': | |
bf12938e | 9070 | INSERT_OPERAND (RT, *ip, lastregno); |
252b5132 RH |
9071 | continue; |
9072 | } | |
9073 | break; | |
9074 | ||
deec1734 CD |
9075 | case 'O': /* MDMX alignment immediate constant. */ |
9076 | my_getExpression (&imm_expr, s); | |
9077 | check_absolute_expr (ip, &imm_expr); | |
9078 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
bf12938e RS |
9079 | as_warn ("Improper align amount (%ld), using low bits", |
9080 | (long) imm_expr.X_add_number); | |
9081 | INSERT_OPERAND (ALN, *ip, imm_expr.X_add_number); | |
deec1734 CD |
9082 | imm_expr.X_op = O_absent; |
9083 | s = expr_end; | |
9084 | continue; | |
9085 | ||
9086 | case 'Q': /* MDMX vector, element sel, or const. */ | |
9087 | if (s[0] != '$') | |
9088 | { | |
9089 | /* MDMX Immediate. */ | |
9090 | my_getExpression (&imm_expr, s); | |
9091 | check_absolute_expr (ip, &imm_expr); | |
9092 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
bf12938e RS |
9093 | as_warn (_("Invalid MDMX Immediate (%ld)"), |
9094 | (long) imm_expr.X_add_number); | |
9095 | INSERT_OPERAND (FT, *ip, imm_expr.X_add_number); | |
deec1734 CD |
9096 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) |
9097 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
9098 | else | |
9099 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
deec1734 CD |
9100 | imm_expr.X_op = O_absent; |
9101 | s = expr_end; | |
9102 | continue; | |
9103 | } | |
9104 | /* Not MDMX Immediate. Fall through. */ | |
9105 | case 'X': /* MDMX destination register. */ | |
9106 | case 'Y': /* MDMX source register. */ | |
9107 | case 'Z': /* MDMX target register. */ | |
9108 | is_mdmx = 1; | |
252b5132 RH |
9109 | case 'D': /* floating point destination register */ |
9110 | case 'S': /* floating point source register */ | |
9111 | case 'T': /* floating point target register */ | |
9112 | case 'R': /* floating point source register */ | |
9113 | case 'V': | |
9114 | case 'W': | |
707bfff6 TS |
9115 | rtype = RTYPE_FPU; |
9116 | if (is_mdmx | |
9117 | || (mips_opts.ase_mdmx | |
9118 | && (ip->insn_mo->pinfo & FP_D) | |
9119 | && (ip->insn_mo->pinfo & (INSN_COPROC_MOVE_DELAY | |
9120 | | INSN_COPROC_MEMORY_DELAY | |
9121 | | INSN_LOAD_COPROC_DELAY | |
9122 | | INSN_LOAD_MEMORY_DELAY | |
9123 | | INSN_STORE_MEMORY)))) | |
9124 | rtype |= RTYPE_VEC; | |
252b5132 | 9125 | s_reset = s; |
707bfff6 | 9126 | if (reg_lookup (&s, rtype, ®no)) |
252b5132 | 9127 | { |
252b5132 | 9128 | if ((regno & 1) != 0 |
ca4e0257 | 9129 | && HAVE_32BIT_FPRS |
7455baf8 | 9130 | && ! mips_oddfpreg_ok (ip->insn_mo, argnum)) |
252b5132 RH |
9131 | as_warn (_("Float register should be even, was %d"), |
9132 | regno); | |
9133 | ||
9134 | c = *args; | |
9135 | if (*s == ' ') | |
f9419b05 | 9136 | ++s; |
252b5132 RH |
9137 | if (args[1] != *s) |
9138 | { | |
9139 | if (c == 'V' || c == 'W') | |
9140 | { | |
9141 | regno = lastregno; | |
9142 | s = s_reset; | |
f9419b05 | 9143 | ++args; |
252b5132 RH |
9144 | } |
9145 | } | |
9146 | switch (c) | |
9147 | { | |
9148 | case 'D': | |
deec1734 | 9149 | case 'X': |
bf12938e | 9150 | INSERT_OPERAND (FD, *ip, regno); |
252b5132 RH |
9151 | break; |
9152 | case 'V': | |
9153 | case 'S': | |
deec1734 | 9154 | case 'Y': |
bf12938e | 9155 | INSERT_OPERAND (FS, *ip, regno); |
252b5132 | 9156 | break; |
deec1734 CD |
9157 | case 'Q': |
9158 | /* This is like 'Z', but also needs to fix the MDMX | |
9159 | vector/scalar select bits. Note that the | |
9160 | scalar immediate case is handled above. */ | |
9161 | if (*s == '[') | |
9162 | { | |
9163 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
9164 | int max_el = (is_qh ? 3 : 7); | |
9165 | s++; | |
9166 | my_getExpression(&imm_expr, s); | |
9167 | check_absolute_expr (ip, &imm_expr); | |
9168 | s = expr_end; | |
9169 | if (imm_expr.X_add_number > max_el) | |
9170 | as_bad(_("Bad element selector %ld"), | |
9171 | (long) imm_expr.X_add_number); | |
9172 | imm_expr.X_add_number &= max_el; | |
9173 | ip->insn_opcode |= (imm_expr.X_add_number | |
9174 | << (OP_SH_VSEL + | |
9175 | (is_qh ? 2 : 1))); | |
01a3f561 | 9176 | imm_expr.X_op = O_absent; |
deec1734 CD |
9177 | if (*s != ']') |
9178 | as_warn(_("Expecting ']' found '%s'"), s); | |
9179 | else | |
9180 | s++; | |
9181 | } | |
9182 | else | |
9183 | { | |
9184 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
9185 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
9186 | << OP_SH_VSEL); | |
9187 | else | |
9188 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
9189 | OP_SH_VSEL); | |
9190 | } | |
9191 | /* Fall through */ | |
252b5132 RH |
9192 | case 'W': |
9193 | case 'T': | |
deec1734 | 9194 | case 'Z': |
bf12938e | 9195 | INSERT_OPERAND (FT, *ip, regno); |
252b5132 RH |
9196 | break; |
9197 | case 'R': | |
bf12938e | 9198 | INSERT_OPERAND (FR, *ip, regno); |
252b5132 RH |
9199 | break; |
9200 | } | |
9201 | lastregno = regno; | |
9202 | continue; | |
9203 | } | |
9204 | ||
252b5132 RH |
9205 | switch (*args++) |
9206 | { | |
9207 | case 'V': | |
bf12938e | 9208 | INSERT_OPERAND (FS, *ip, lastregno); |
252b5132 RH |
9209 | continue; |
9210 | case 'W': | |
bf12938e | 9211 | INSERT_OPERAND (FT, *ip, lastregno); |
252b5132 RH |
9212 | continue; |
9213 | } | |
9214 | break; | |
9215 | ||
9216 | case 'I': | |
9217 | my_getExpression (&imm_expr, s); | |
9218 | if (imm_expr.X_op != O_big | |
9219 | && imm_expr.X_op != O_constant) | |
9220 | insn_error = _("absolute expression required"); | |
9ee2a2d4 MR |
9221 | if (HAVE_32BIT_GPRS) |
9222 | normalize_constant_expr (&imm_expr); | |
252b5132 RH |
9223 | s = expr_end; |
9224 | continue; | |
9225 | ||
9226 | case 'A': | |
9227 | my_getExpression (&offset_expr, s); | |
2051e8c4 | 9228 | normalize_address_expr (&offset_expr); |
f6688943 | 9229 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
9230 | s = expr_end; |
9231 | continue; | |
9232 | ||
9233 | case 'F': | |
9234 | case 'L': | |
9235 | case 'f': | |
9236 | case 'l': | |
9237 | { | |
9238 | int f64; | |
ca4e0257 | 9239 | int using_gprs; |
252b5132 RH |
9240 | char *save_in; |
9241 | char *err; | |
9242 | unsigned char temp[8]; | |
9243 | int len; | |
9244 | unsigned int length; | |
9245 | segT seg; | |
9246 | subsegT subseg; | |
9247 | char *p; | |
9248 | ||
9249 | /* These only appear as the last operand in an | |
9250 | instruction, and every instruction that accepts | |
9251 | them in any variant accepts them in all variants. | |
9252 | This means we don't have to worry about backing out | |
9253 | any changes if the instruction does not match. | |
9254 | ||
9255 | The difference between them is the size of the | |
9256 | floating point constant and where it goes. For 'F' | |
9257 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
9258 | is 32 bits. Where the constant is placed is based | |
9259 | on how the MIPS assembler does things: | |
9260 | F -- .rdata | |
9261 | L -- .lit8 | |
9262 | f -- immediate value | |
9263 | l -- .lit4 | |
9264 | ||
9265 | The .lit4 and .lit8 sections are only used if | |
9266 | permitted by the -G argument. | |
9267 | ||
ca4e0257 RS |
9268 | The code below needs to know whether the target register |
9269 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
9270 | 'F' are used with GPR-based instructions and 'l' and | |
9271 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
9272 | |
9273 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 9274 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
9275 | |
9276 | save_in = input_line_pointer; | |
9277 | input_line_pointer = s; | |
9278 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
9279 | length = len; | |
9280 | s = input_line_pointer; | |
9281 | input_line_pointer = save_in; | |
9282 | if (err != NULL && *err != '\0') | |
9283 | { | |
9284 | as_bad (_("Bad floating point constant: %s"), err); | |
9285 | memset (temp, '\0', sizeof temp); | |
9286 | length = f64 ? 8 : 4; | |
9287 | } | |
9288 | ||
156c2f8b | 9289 | assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
9290 | |
9291 | if (*args == 'f' | |
9292 | || (*args == 'l' | |
3e722fb5 | 9293 | && (g_switch_value < 4 |
252b5132 RH |
9294 | || (temp[0] == 0 && temp[1] == 0) |
9295 | || (temp[2] == 0 && temp[3] == 0)))) | |
9296 | { | |
9297 | imm_expr.X_op = O_constant; | |
9298 | if (! target_big_endian) | |
9299 | imm_expr.X_add_number = bfd_getl32 (temp); | |
9300 | else | |
9301 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9302 | } | |
9303 | else if (length > 4 | |
119d663a | 9304 | && ! mips_disable_float_construction |
ca4e0257 RS |
9305 | /* Constants can only be constructed in GPRs and |
9306 | copied to FPRs if the GPRs are at least as wide | |
9307 | as the FPRs. Force the constant into memory if | |
9308 | we are using 64-bit FPRs but the GPRs are only | |
9309 | 32 bits wide. */ | |
9310 | && (using_gprs | |
9311 | || ! (HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) | |
252b5132 RH |
9312 | && ((temp[0] == 0 && temp[1] == 0) |
9313 | || (temp[2] == 0 && temp[3] == 0)) | |
9314 | && ((temp[4] == 0 && temp[5] == 0) | |
9315 | || (temp[6] == 0 && temp[7] == 0))) | |
9316 | { | |
ca4e0257 RS |
9317 | /* The value is simple enough to load with a couple of |
9318 | instructions. If using 32-bit registers, set | |
9319 | imm_expr to the high order 32 bits and offset_expr to | |
9320 | the low order 32 bits. Otherwise, set imm_expr to | |
9321 | the entire 64 bit constant. */ | |
9322 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) | |
252b5132 RH |
9323 | { |
9324 | imm_expr.X_op = O_constant; | |
9325 | offset_expr.X_op = O_constant; | |
9326 | if (! target_big_endian) | |
9327 | { | |
9328 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
9329 | offset_expr.X_add_number = bfd_getl32 (temp); | |
9330 | } | |
9331 | else | |
9332 | { | |
9333 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9334 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
9335 | } | |
9336 | if (offset_expr.X_add_number == 0) | |
9337 | offset_expr.X_op = O_absent; | |
9338 | } | |
9339 | else if (sizeof (imm_expr.X_add_number) > 4) | |
9340 | { | |
9341 | imm_expr.X_op = O_constant; | |
9342 | if (! target_big_endian) | |
9343 | imm_expr.X_add_number = bfd_getl64 (temp); | |
9344 | else | |
9345 | imm_expr.X_add_number = bfd_getb64 (temp); | |
9346 | } | |
9347 | else | |
9348 | { | |
9349 | imm_expr.X_op = O_big; | |
9350 | imm_expr.X_add_number = 4; | |
9351 | if (! target_big_endian) | |
9352 | { | |
9353 | generic_bignum[0] = bfd_getl16 (temp); | |
9354 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
9355 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
9356 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
9357 | } | |
9358 | else | |
9359 | { | |
9360 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
9361 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
9362 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
9363 | generic_bignum[3] = bfd_getb16 (temp); | |
9364 | } | |
9365 | } | |
9366 | } | |
9367 | else | |
9368 | { | |
9369 | const char *newname; | |
9370 | segT new_seg; | |
9371 | ||
9372 | /* Switch to the right section. */ | |
9373 | seg = now_seg; | |
9374 | subseg = now_subseg; | |
9375 | switch (*args) | |
9376 | { | |
9377 | default: /* unused default case avoids warnings. */ | |
9378 | case 'L': | |
9379 | newname = RDATA_SECTION_NAME; | |
3e722fb5 | 9380 | if (g_switch_value >= 8) |
252b5132 RH |
9381 | newname = ".lit8"; |
9382 | break; | |
9383 | case 'F': | |
3e722fb5 | 9384 | newname = RDATA_SECTION_NAME; |
252b5132 RH |
9385 | break; |
9386 | case 'l': | |
4d0d148d | 9387 | assert (g_switch_value >= 4); |
252b5132 RH |
9388 | newname = ".lit4"; |
9389 | break; | |
9390 | } | |
9391 | new_seg = subseg_new (newname, (subsegT) 0); | |
9392 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
9393 | bfd_set_section_flags (stdoutput, new_seg, | |
9394 | (SEC_ALLOC | |
9395 | | SEC_LOAD | |
9396 | | SEC_READONLY | |
9397 | | SEC_DATA)); | |
9398 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
9399 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
9400 | && strcmp (TARGET_OS, "elf") != 0) | |
9401 | record_alignment (new_seg, 4); | |
9402 | else | |
9403 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
9404 | if (seg == now_seg) | |
9405 | as_bad (_("Can't use floating point insn in this section")); | |
9406 | ||
9407 | /* Set the argument to the current address in the | |
9408 | section. */ | |
9409 | offset_expr.X_op = O_symbol; | |
9410 | offset_expr.X_add_symbol = | |
9411 | symbol_new ("L0\001", now_seg, | |
9412 | (valueT) frag_now_fix (), frag_now); | |
9413 | offset_expr.X_add_number = 0; | |
9414 | ||
9415 | /* Put the floating point number into the section. */ | |
9416 | p = frag_more ((int) length); | |
9417 | memcpy (p, temp, length); | |
9418 | ||
9419 | /* Switch back to the original section. */ | |
9420 | subseg_set (seg, subseg); | |
9421 | } | |
9422 | } | |
9423 | continue; | |
9424 | ||
9425 | case 'i': /* 16 bit unsigned immediate */ | |
9426 | case 'j': /* 16 bit signed immediate */ | |
f6688943 | 9427 | *imm_reloc = BFD_RELOC_LO16; |
5e0116d5 | 9428 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0) |
252b5132 RH |
9429 | { |
9430 | int more; | |
5e0116d5 RS |
9431 | offsetT minval, maxval; |
9432 | ||
9433 | more = (insn + 1 < &mips_opcodes[NUMOPCODES] | |
9434 | && strcmp (insn->name, insn[1].name) == 0); | |
9435 | ||
9436 | /* If the expression was written as an unsigned number, | |
9437 | only treat it as signed if there are no more | |
9438 | alternatives. */ | |
9439 | if (more | |
9440 | && *args == 'j' | |
9441 | && sizeof (imm_expr.X_add_number) <= 4 | |
9442 | && imm_expr.X_op == O_constant | |
9443 | && imm_expr.X_add_number < 0 | |
9444 | && imm_expr.X_unsigned | |
9445 | && HAVE_64BIT_GPRS) | |
9446 | break; | |
9447 | ||
9448 | /* For compatibility with older assemblers, we accept | |
9449 | 0x8000-0xffff as signed 16-bit numbers when only | |
9450 | signed numbers are allowed. */ | |
9451 | if (*args == 'i') | |
9452 | minval = 0, maxval = 0xffff; | |
9453 | else if (more) | |
9454 | minval = -0x8000, maxval = 0x7fff; | |
252b5132 | 9455 | else |
5e0116d5 RS |
9456 | minval = -0x8000, maxval = 0xffff; |
9457 | ||
9458 | if (imm_expr.X_op != O_constant | |
9459 | || imm_expr.X_add_number < minval | |
9460 | || imm_expr.X_add_number > maxval) | |
252b5132 RH |
9461 | { |
9462 | if (more) | |
9463 | break; | |
2ae7e77b AH |
9464 | if (imm_expr.X_op == O_constant |
9465 | || imm_expr.X_op == O_big) | |
5e0116d5 | 9466 | as_bad (_("expression out of range")); |
252b5132 RH |
9467 | } |
9468 | } | |
9469 | s = expr_end; | |
9470 | continue; | |
9471 | ||
9472 | case 'o': /* 16 bit offset */ | |
5e0116d5 RS |
9473 | /* Check whether there is only a single bracketed expression |
9474 | left. If so, it must be the base register and the | |
9475 | constant must be zero. */ | |
9476 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
9477 | { | |
9478 | offset_expr.X_op = O_constant; | |
9479 | offset_expr.X_add_number = 0; | |
9480 | continue; | |
9481 | } | |
252b5132 RH |
9482 | |
9483 | /* If this value won't fit into a 16 bit offset, then go | |
9484 | find a macro that will generate the 32 bit offset | |
afdbd6d0 | 9485 | code pattern. */ |
5e0116d5 | 9486 | if (my_getSmallExpression (&offset_expr, offset_reloc, s) == 0 |
252b5132 RH |
9487 | && (offset_expr.X_op != O_constant |
9488 | || offset_expr.X_add_number >= 0x8000 | |
afdbd6d0 | 9489 | || offset_expr.X_add_number < -0x8000)) |
252b5132 RH |
9490 | break; |
9491 | ||
252b5132 RH |
9492 | s = expr_end; |
9493 | continue; | |
9494 | ||
9495 | case 'p': /* pc relative offset */ | |
0b25d3e6 | 9496 | *offset_reloc = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
9497 | my_getExpression (&offset_expr, s); |
9498 | s = expr_end; | |
9499 | continue; | |
9500 | ||
9501 | case 'u': /* upper 16 bits */ | |
5e0116d5 RS |
9502 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0 |
9503 | && imm_expr.X_op == O_constant | |
9504 | && (imm_expr.X_add_number < 0 | |
9505 | || imm_expr.X_add_number >= 0x10000)) | |
252b5132 RH |
9506 | as_bad (_("lui expression not in range 0..65535")); |
9507 | s = expr_end; | |
9508 | continue; | |
9509 | ||
9510 | case 'a': /* 26 bit address */ | |
9511 | my_getExpression (&offset_expr, s); | |
9512 | s = expr_end; | |
f6688943 | 9513 | *offset_reloc = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
9514 | continue; |
9515 | ||
9516 | case 'N': /* 3 bit branch condition code */ | |
9517 | case 'M': /* 3 bit compare condition code */ | |
707bfff6 TS |
9518 | rtype = RTYPE_CCC; |
9519 | if (ip->insn_mo->pinfo & (FP_D| FP_S)) | |
9520 | rtype |= RTYPE_FCC; | |
9521 | if (!reg_lookup (&s, rtype, ®no)) | |
252b5132 | 9522 | break; |
30c378fd CD |
9523 | if ((strcmp(str + strlen(str) - 3, ".ps") == 0 |
9524 | || strcmp(str + strlen(str) - 5, "any2f") == 0 | |
9525 | || strcmp(str + strlen(str) - 5, "any2t") == 0) | |
9526 | && (regno & 1) != 0) | |
9527 | as_warn(_("Condition code register should be even for %s, was %d"), | |
9528 | str, regno); | |
9529 | if ((strcmp(str + strlen(str) - 5, "any4f") == 0 | |
9530 | || strcmp(str + strlen(str) - 5, "any4t") == 0) | |
9531 | && (regno & 3) != 0) | |
9532 | as_warn(_("Condition code register should be 0 or 4 for %s, was %d"), | |
9533 | str, regno); | |
252b5132 | 9534 | if (*args == 'N') |
bf12938e | 9535 | INSERT_OPERAND (BCC, *ip, regno); |
252b5132 | 9536 | else |
bf12938e | 9537 | INSERT_OPERAND (CCC, *ip, regno); |
beae10d5 | 9538 | continue; |
252b5132 | 9539 | |
156c2f8b NC |
9540 | case 'H': |
9541 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
9542 | s += 2; | |
3882b010 | 9543 | if (ISDIGIT (*s)) |
156c2f8b NC |
9544 | { |
9545 | c = 0; | |
9546 | do | |
9547 | { | |
9548 | c *= 10; | |
9549 | c += *s - '0'; | |
9550 | ++s; | |
9551 | } | |
3882b010 | 9552 | while (ISDIGIT (*s)); |
156c2f8b NC |
9553 | } |
9554 | else | |
9555 | c = 8; /* Invalid sel value. */ | |
9556 | ||
9557 | if (c > 7) | |
9558 | as_bad (_("invalid coprocessor sub-selection value (0-7)")); | |
9559 | ip->insn_opcode |= c; | |
9560 | continue; | |
9561 | ||
60b63b72 RS |
9562 | case 'e': |
9563 | /* Must be at least one digit. */ | |
9564 | my_getExpression (&imm_expr, s); | |
9565 | check_absolute_expr (ip, &imm_expr); | |
9566 | ||
9567 | if ((unsigned long) imm_expr.X_add_number | |
9568 | > (unsigned long) OP_MASK_VECBYTE) | |
9569 | { | |
9570 | as_bad (_("bad byte vector index (%ld)"), | |
9571 | (long) imm_expr.X_add_number); | |
9572 | imm_expr.X_add_number = 0; | |
9573 | } | |
9574 | ||
bf12938e | 9575 | INSERT_OPERAND (VECBYTE, *ip, imm_expr.X_add_number); |
60b63b72 RS |
9576 | imm_expr.X_op = O_absent; |
9577 | s = expr_end; | |
9578 | continue; | |
9579 | ||
9580 | case '%': | |
9581 | my_getExpression (&imm_expr, s); | |
9582 | check_absolute_expr (ip, &imm_expr); | |
9583 | ||
9584 | if ((unsigned long) imm_expr.X_add_number | |
9585 | > (unsigned long) OP_MASK_VECALIGN) | |
9586 | { | |
9587 | as_bad (_("bad byte vector index (%ld)"), | |
9588 | (long) imm_expr.X_add_number); | |
9589 | imm_expr.X_add_number = 0; | |
9590 | } | |
9591 | ||
bf12938e | 9592 | INSERT_OPERAND (VECALIGN, *ip, imm_expr.X_add_number); |
60b63b72 RS |
9593 | imm_expr.X_op = O_absent; |
9594 | s = expr_end; | |
9595 | continue; | |
9596 | ||
252b5132 RH |
9597 | default: |
9598 | as_bad (_("bad char = '%c'\n"), *args); | |
9599 | internalError (); | |
9600 | } | |
9601 | break; | |
9602 | } | |
9603 | /* Args don't match. */ | |
9604 | if (insn + 1 < &mips_opcodes[NUMOPCODES] && | |
9605 | !strcmp (insn->name, insn[1].name)) | |
9606 | { | |
9607 | ++insn; | |
9608 | s = argsStart; | |
268f6bed | 9609 | insn_error = _("illegal operands"); |
252b5132 RH |
9610 | continue; |
9611 | } | |
268f6bed L |
9612 | if (save_c) |
9613 | *(--s) = save_c; | |
252b5132 RH |
9614 | insn_error = _("illegal operands"); |
9615 | return; | |
9616 | } | |
9617 | } | |
9618 | ||
0499d65b TS |
9619 | #define SKIP_SPACE_TABS(S) { while (*(S) == ' ' || *(S) == '\t') ++(S); } |
9620 | ||
252b5132 RH |
9621 | /* This routine assembles an instruction into its binary format when |
9622 | assembling for the mips16. As a side effect, it sets one of the | |
9623 | global variables imm_reloc or offset_reloc to the type of | |
9624 | relocation to do if one of the operands is an address expression. | |
9625 | It also sets mips16_small and mips16_ext if the user explicitly | |
9626 | requested a small or extended instruction. */ | |
9627 | ||
9628 | static void | |
17a2f251 | 9629 | mips16_ip (char *str, struct mips_cl_insn *ip) |
252b5132 RH |
9630 | { |
9631 | char *s; | |
9632 | const char *args; | |
9633 | struct mips_opcode *insn; | |
9634 | char *argsstart; | |
9635 | unsigned int regno; | |
9636 | unsigned int lastregno = 0; | |
9637 | char *s_reset; | |
d6f16593 | 9638 | size_t i; |
252b5132 RH |
9639 | |
9640 | insn_error = NULL; | |
9641 | ||
b34976b6 AM |
9642 | mips16_small = FALSE; |
9643 | mips16_ext = FALSE; | |
252b5132 | 9644 | |
3882b010 | 9645 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
9646 | ; |
9647 | switch (*s) | |
9648 | { | |
9649 | case '\0': | |
9650 | break; | |
9651 | ||
9652 | case ' ': | |
9653 | *s++ = '\0'; | |
9654 | break; | |
9655 | ||
9656 | case '.': | |
9657 | if (s[1] == 't' && s[2] == ' ') | |
9658 | { | |
9659 | *s = '\0'; | |
b34976b6 | 9660 | mips16_small = TRUE; |
252b5132 RH |
9661 | s += 3; |
9662 | break; | |
9663 | } | |
9664 | else if (s[1] == 'e' && s[2] == ' ') | |
9665 | { | |
9666 | *s = '\0'; | |
b34976b6 | 9667 | mips16_ext = TRUE; |
252b5132 RH |
9668 | s += 3; |
9669 | break; | |
9670 | } | |
9671 | /* Fall through. */ | |
9672 | default: | |
9673 | insn_error = _("unknown opcode"); | |
9674 | return; | |
9675 | } | |
9676 | ||
9677 | if (mips_opts.noautoextend && ! mips16_ext) | |
b34976b6 | 9678 | mips16_small = TRUE; |
252b5132 RH |
9679 | |
9680 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
9681 | { | |
9682 | insn_error = _("unrecognized opcode"); | |
9683 | return; | |
9684 | } | |
9685 | ||
9686 | argsstart = s; | |
9687 | for (;;) | |
9688 | { | |
9b3f89ee TS |
9689 | bfd_boolean ok; |
9690 | ||
252b5132 RH |
9691 | assert (strcmp (insn->name, str) == 0); |
9692 | ||
9b3f89ee TS |
9693 | if (OPCODE_IS_MEMBER (insn, mips_opts.isa, mips_opts.arch)) |
9694 | ok = TRUE; | |
9695 | else | |
9696 | ok = FALSE; | |
9697 | ||
9698 | if (! ok) | |
9699 | { | |
9700 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] | |
9701 | && strcmp (insn->name, insn[1].name) == 0) | |
9702 | { | |
9703 | ++insn; | |
9704 | continue; | |
9705 | } | |
9706 | else | |
9707 | { | |
9708 | if (!insn_error) | |
9709 | { | |
9710 | static char buf[100]; | |
9711 | sprintf (buf, | |
9712 | _("opcode not supported on this processor: %s (%s)"), | |
9713 | mips_cpu_info_from_arch (mips_opts.arch)->name, | |
9714 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
9715 | insn_error = buf; | |
9716 | } | |
9717 | return; | |
9718 | } | |
9719 | } | |
9720 | ||
1e915849 | 9721 | create_insn (ip, insn); |
252b5132 | 9722 | imm_expr.X_op = O_absent; |
f6688943 TS |
9723 | imm_reloc[0] = BFD_RELOC_UNUSED; |
9724 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
9725 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
5f74bc13 | 9726 | imm2_expr.X_op = O_absent; |
252b5132 | 9727 | offset_expr.X_op = O_absent; |
f6688943 TS |
9728 | offset_reloc[0] = BFD_RELOC_UNUSED; |
9729 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
9730 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
9731 | for (args = insn->args; 1; ++args) |
9732 | { | |
9733 | int c; | |
9734 | ||
9735 | if (*s == ' ') | |
9736 | ++s; | |
9737 | ||
9738 | /* In this switch statement we call break if we did not find | |
9739 | a match, continue if we did find a match, or return if we | |
9740 | are done. */ | |
9741 | ||
9742 | c = *args; | |
9743 | switch (c) | |
9744 | { | |
9745 | case '\0': | |
9746 | if (*s == '\0') | |
9747 | { | |
9748 | /* Stuff the immediate value in now, if we can. */ | |
9749 | if (imm_expr.X_op == O_constant | |
f6688943 | 9750 | && *imm_reloc > BFD_RELOC_UNUSED |
252b5132 RH |
9751 | && insn->pinfo != INSN_MACRO) |
9752 | { | |
d6f16593 MR |
9753 | valueT tmp; |
9754 | ||
9755 | switch (*offset_reloc) | |
9756 | { | |
9757 | case BFD_RELOC_MIPS16_HI16_S: | |
9758 | tmp = (imm_expr.X_add_number + 0x8000) >> 16; | |
9759 | break; | |
9760 | ||
9761 | case BFD_RELOC_MIPS16_HI16: | |
9762 | tmp = imm_expr.X_add_number >> 16; | |
9763 | break; | |
9764 | ||
9765 | case BFD_RELOC_MIPS16_LO16: | |
9766 | tmp = ((imm_expr.X_add_number + 0x8000) & 0xffff) | |
9767 | - 0x8000; | |
9768 | break; | |
9769 | ||
9770 | case BFD_RELOC_UNUSED: | |
9771 | tmp = imm_expr.X_add_number; | |
9772 | break; | |
9773 | ||
9774 | default: | |
9775 | internalError (); | |
9776 | } | |
9777 | *offset_reloc = BFD_RELOC_UNUSED; | |
9778 | ||
c4e7957c | 9779 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
d6f16593 | 9780 | tmp, TRUE, mips16_small, |
252b5132 RH |
9781 | mips16_ext, &ip->insn_opcode, |
9782 | &ip->use_extend, &ip->extend); | |
9783 | imm_expr.X_op = O_absent; | |
f6688943 | 9784 | *imm_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
9785 | } |
9786 | ||
9787 | return; | |
9788 | } | |
9789 | break; | |
9790 | ||
9791 | case ',': | |
9792 | if (*s++ == c) | |
9793 | continue; | |
9794 | s--; | |
9795 | switch (*++args) | |
9796 | { | |
9797 | case 'v': | |
bf12938e | 9798 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 RH |
9799 | continue; |
9800 | case 'w': | |
bf12938e | 9801 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
9802 | continue; |
9803 | } | |
9804 | break; | |
9805 | ||
9806 | case '(': | |
9807 | case ')': | |
9808 | if (*s++ == c) | |
9809 | continue; | |
9810 | break; | |
9811 | ||
9812 | case 'v': | |
9813 | case 'w': | |
9814 | if (s[0] != '$') | |
9815 | { | |
9816 | if (c == 'v') | |
bf12938e | 9817 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
252b5132 | 9818 | else |
bf12938e | 9819 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
252b5132 RH |
9820 | ++args; |
9821 | continue; | |
9822 | } | |
9823 | /* Fall through. */ | |
9824 | case 'x': | |
9825 | case 'y': | |
9826 | case 'z': | |
9827 | case 'Z': | |
9828 | case '0': | |
9829 | case 'S': | |
9830 | case 'R': | |
9831 | case 'X': | |
9832 | case 'Y': | |
707bfff6 TS |
9833 | s_reset = s; |
9834 | if (!reg_lookup (&s, RTYPE_NUM | RTYPE_GP, ®no)) | |
252b5132 | 9835 | { |
707bfff6 | 9836 | if (c == 'v' || c == 'w') |
85b51719 | 9837 | { |
707bfff6 | 9838 | if (c == 'v') |
a9e24354 | 9839 | MIPS16_INSERT_OPERAND (RX, *ip, lastregno); |
707bfff6 | 9840 | else |
a9e24354 | 9841 | MIPS16_INSERT_OPERAND (RY, *ip, lastregno); |
707bfff6 TS |
9842 | ++args; |
9843 | continue; | |
85b51719 | 9844 | } |
707bfff6 | 9845 | break; |
252b5132 RH |
9846 | } |
9847 | ||
9848 | if (*s == ' ') | |
9849 | ++s; | |
9850 | if (args[1] != *s) | |
9851 | { | |
9852 | if (c == 'v' || c == 'w') | |
9853 | { | |
9854 | regno = mips16_to_32_reg_map[lastregno]; | |
9855 | s = s_reset; | |
f9419b05 | 9856 | ++args; |
252b5132 RH |
9857 | } |
9858 | } | |
9859 | ||
9860 | switch (c) | |
9861 | { | |
9862 | case 'x': | |
9863 | case 'y': | |
9864 | case 'z': | |
9865 | case 'v': | |
9866 | case 'w': | |
9867 | case 'Z': | |
9868 | regno = mips32_to_16_reg_map[regno]; | |
9869 | break; | |
9870 | ||
9871 | case '0': | |
9872 | if (regno != 0) | |
9873 | regno = ILLEGAL_REG; | |
9874 | break; | |
9875 | ||
9876 | case 'S': | |
9877 | if (regno != SP) | |
9878 | regno = ILLEGAL_REG; | |
9879 | break; | |
9880 | ||
9881 | case 'R': | |
9882 | if (regno != RA) | |
9883 | regno = ILLEGAL_REG; | |
9884 | break; | |
9885 | ||
9886 | case 'X': | |
9887 | case 'Y': | |
9888 | if (regno == AT && ! mips_opts.noat) | |
9889 | as_warn (_("used $at without \".set noat\"")); | |
9890 | break; | |
9891 | ||
9892 | default: | |
9893 | internalError (); | |
9894 | } | |
9895 | ||
9896 | if (regno == ILLEGAL_REG) | |
9897 | break; | |
9898 | ||
9899 | switch (c) | |
9900 | { | |
9901 | case 'x': | |
9902 | case 'v': | |
bf12938e | 9903 | MIPS16_INSERT_OPERAND (RX, *ip, regno); |
252b5132 RH |
9904 | break; |
9905 | case 'y': | |
9906 | case 'w': | |
bf12938e | 9907 | MIPS16_INSERT_OPERAND (RY, *ip, regno); |
252b5132 RH |
9908 | break; |
9909 | case 'z': | |
bf12938e | 9910 | MIPS16_INSERT_OPERAND (RZ, *ip, regno); |
252b5132 RH |
9911 | break; |
9912 | case 'Z': | |
bf12938e | 9913 | MIPS16_INSERT_OPERAND (MOVE32Z, *ip, regno); |
252b5132 RH |
9914 | case '0': |
9915 | case 'S': | |
9916 | case 'R': | |
9917 | break; | |
9918 | case 'X': | |
bf12938e | 9919 | MIPS16_INSERT_OPERAND (REGR32, *ip, regno); |
252b5132 RH |
9920 | break; |
9921 | case 'Y': | |
9922 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
bf12938e | 9923 | MIPS16_INSERT_OPERAND (REG32R, *ip, regno); |
252b5132 RH |
9924 | break; |
9925 | default: | |
9926 | internalError (); | |
9927 | } | |
9928 | ||
9929 | lastregno = regno; | |
9930 | continue; | |
9931 | ||
9932 | case 'P': | |
9933 | if (strncmp (s, "$pc", 3) == 0) | |
9934 | { | |
9935 | s += 3; | |
9936 | continue; | |
9937 | } | |
9938 | break; | |
9939 | ||
252b5132 RH |
9940 | case '5': |
9941 | case 'H': | |
9942 | case 'W': | |
9943 | case 'D': | |
9944 | case 'j': | |
252b5132 RH |
9945 | case 'V': |
9946 | case 'C': | |
9947 | case 'U': | |
9948 | case 'k': | |
9949 | case 'K': | |
d6f16593 MR |
9950 | i = my_getSmallExpression (&imm_expr, imm_reloc, s); |
9951 | if (i > 0) | |
252b5132 | 9952 | { |
d6f16593 | 9953 | if (imm_expr.X_op != O_constant) |
252b5132 | 9954 | { |
b34976b6 | 9955 | mips16_ext = TRUE; |
b34976b6 | 9956 | ip->use_extend = TRUE; |
252b5132 | 9957 | ip->extend = 0; |
252b5132 | 9958 | } |
d6f16593 MR |
9959 | else |
9960 | { | |
9961 | /* We need to relax this instruction. */ | |
9962 | *offset_reloc = *imm_reloc; | |
9963 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; | |
9964 | } | |
9965 | s = expr_end; | |
9966 | continue; | |
252b5132 | 9967 | } |
d6f16593 MR |
9968 | *imm_reloc = BFD_RELOC_UNUSED; |
9969 | /* Fall through. */ | |
9970 | case '<': | |
9971 | case '>': | |
9972 | case '[': | |
9973 | case ']': | |
9974 | case '4': | |
9975 | case '8': | |
9976 | my_getExpression (&imm_expr, s); | |
252b5132 RH |
9977 | if (imm_expr.X_op == O_register) |
9978 | { | |
9979 | /* What we thought was an expression turned out to | |
9980 | be a register. */ | |
9981 | ||
9982 | if (s[0] == '(' && args[1] == '(') | |
9983 | { | |
9984 | /* It looks like the expression was omitted | |
9985 | before a register indirection, which means | |
9986 | that the expression is implicitly zero. We | |
9987 | still set up imm_expr, so that we handle | |
9988 | explicit extensions correctly. */ | |
9989 | imm_expr.X_op = O_constant; | |
9990 | imm_expr.X_add_number = 0; | |
f6688943 | 9991 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
9992 | continue; |
9993 | } | |
9994 | ||
9995 | break; | |
9996 | } | |
9997 | ||
9998 | /* We need to relax this instruction. */ | |
f6688943 | 9999 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10000 | s = expr_end; |
10001 | continue; | |
10002 | ||
10003 | case 'p': | |
10004 | case 'q': | |
10005 | case 'A': | |
10006 | case 'B': | |
10007 | case 'E': | |
10008 | /* We use offset_reloc rather than imm_reloc for the PC | |
10009 | relative operands. This lets macros with both | |
10010 | immediate and address operands work correctly. */ | |
10011 | my_getExpression (&offset_expr, s); | |
10012 | ||
10013 | if (offset_expr.X_op == O_register) | |
10014 | break; | |
10015 | ||
10016 | /* We need to relax this instruction. */ | |
f6688943 | 10017 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10018 | s = expr_end; |
10019 | continue; | |
10020 | ||
10021 | case '6': /* break code */ | |
10022 | my_getExpression (&imm_expr, s); | |
10023 | check_absolute_expr (ip, &imm_expr); | |
10024 | if ((unsigned long) imm_expr.X_add_number > 63) | |
bf12938e RS |
10025 | as_warn (_("Invalid value for `%s' (%lu)"), |
10026 | ip->insn_mo->name, | |
10027 | (unsigned long) imm_expr.X_add_number); | |
10028 | MIPS16_INSERT_OPERAND (IMM6, *ip, imm_expr.X_add_number); | |
252b5132 RH |
10029 | imm_expr.X_op = O_absent; |
10030 | s = expr_end; | |
10031 | continue; | |
10032 | ||
10033 | case 'a': /* 26 bit address */ | |
10034 | my_getExpression (&offset_expr, s); | |
10035 | s = expr_end; | |
f6688943 | 10036 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
10037 | ip->insn_opcode <<= 16; |
10038 | continue; | |
10039 | ||
10040 | case 'l': /* register list for entry macro */ | |
10041 | case 'L': /* register list for exit macro */ | |
10042 | { | |
10043 | int mask; | |
10044 | ||
10045 | if (c == 'l') | |
10046 | mask = 0; | |
10047 | else | |
10048 | mask = 7 << 3; | |
10049 | while (*s != '\0') | |
10050 | { | |
707bfff6 | 10051 | unsigned int freg, reg1, reg2; |
252b5132 RH |
10052 | |
10053 | while (*s == ' ' || *s == ',') | |
10054 | ++s; | |
707bfff6 | 10055 | if (reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
252b5132 | 10056 | freg = 0; |
707bfff6 TS |
10057 | else if (reg_lookup (&s, RTYPE_FPU, ®1)) |
10058 | freg = 1; | |
252b5132 RH |
10059 | else |
10060 | { | |
707bfff6 TS |
10061 | as_bad (_("can't parse register list")); |
10062 | break; | |
252b5132 RH |
10063 | } |
10064 | if (*s == ' ') | |
10065 | ++s; | |
10066 | if (*s != '-') | |
10067 | reg2 = reg1; | |
10068 | else | |
10069 | { | |
10070 | ++s; | |
707bfff6 TS |
10071 | if (!reg_lookup (&s, freg ? RTYPE_FPU |
10072 | : (RTYPE_GP | RTYPE_NUM), ®2)) | |
252b5132 | 10073 | { |
707bfff6 TS |
10074 | as_bad (_("invalid register list")); |
10075 | break; | |
252b5132 RH |
10076 | } |
10077 | } | |
10078 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
10079 | { | |
10080 | mask &= ~ (7 << 3); | |
10081 | mask |= 5 << 3; | |
10082 | } | |
10083 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
10084 | { | |
10085 | mask &= ~ (7 << 3); | |
10086 | mask |= 6 << 3; | |
10087 | } | |
10088 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
10089 | mask |= (reg2 - 3) << 3; | |
10090 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
10091 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 10092 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
10093 | mask |= 1; |
10094 | else | |
10095 | { | |
10096 | as_bad (_("invalid register list")); | |
10097 | break; | |
10098 | } | |
10099 | } | |
10100 | /* The mask is filled in in the opcode table for the | |
10101 | benefit of the disassembler. We remove it before | |
10102 | applying the actual mask. */ | |
10103 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
10104 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
10105 | } | |
10106 | continue; | |
10107 | ||
0499d65b TS |
10108 | case 'm': /* Register list for save insn. */ |
10109 | case 'M': /* Register list for restore insn. */ | |
10110 | { | |
10111 | int opcode = 0; | |
10112 | int framesz = 0, seen_framesz = 0; | |
10113 | int args = 0, statics = 0, sregs = 0; | |
10114 | ||
10115 | while (*s != '\0') | |
10116 | { | |
10117 | unsigned int reg1, reg2; | |
10118 | ||
10119 | SKIP_SPACE_TABS (s); | |
10120 | while (*s == ',') | |
10121 | ++s; | |
10122 | SKIP_SPACE_TABS (s); | |
10123 | ||
10124 | my_getExpression (&imm_expr, s); | |
10125 | if (imm_expr.X_op == O_constant) | |
10126 | { | |
10127 | /* Handle the frame size. */ | |
10128 | if (seen_framesz) | |
10129 | { | |
10130 | as_bad (_("more than one frame size in list")); | |
10131 | break; | |
10132 | } | |
10133 | seen_framesz = 1; | |
10134 | framesz = imm_expr.X_add_number; | |
10135 | imm_expr.X_op = O_absent; | |
10136 | s = expr_end; | |
10137 | continue; | |
10138 | } | |
10139 | ||
707bfff6 | 10140 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®1)) |
0499d65b TS |
10141 | { |
10142 | as_bad (_("can't parse register list")); | |
10143 | break; | |
10144 | } | |
0499d65b | 10145 | |
707bfff6 TS |
10146 | while (*s == ' ') |
10147 | ++s; | |
10148 | ||
0499d65b TS |
10149 | if (*s != '-') |
10150 | reg2 = reg1; | |
10151 | else | |
10152 | { | |
10153 | ++s; | |
707bfff6 TS |
10154 | if (! reg_lookup (&s, RTYPE_GP | RTYPE_NUM, ®2) |
10155 | || reg2 < reg1) | |
0499d65b TS |
10156 | { |
10157 | as_bad (_("can't parse register list")); | |
10158 | break; | |
10159 | } | |
0499d65b TS |
10160 | } |
10161 | ||
10162 | while (reg1 <= reg2) | |
10163 | { | |
10164 | if (reg1 >= 4 && reg1 <= 7) | |
10165 | { | |
10166 | if (c == 'm' && !seen_framesz) | |
10167 | /* args $a0-$a3 */ | |
10168 | args |= 1 << (reg1 - 4); | |
10169 | else | |
10170 | /* statics $a0-$a3 */ | |
10171 | statics |= 1 << (reg1 - 4); | |
10172 | } | |
10173 | else if ((reg1 >= 16 && reg1 <= 23) || reg1 == 30) | |
10174 | { | |
10175 | /* $s0-$s8 */ | |
10176 | sregs |= 1 << ((reg1 == 30) ? 8 : (reg1 - 16)); | |
10177 | } | |
10178 | else if (reg1 == 31) | |
10179 | { | |
10180 | /* Add $ra to insn. */ | |
10181 | opcode |= 0x40; | |
10182 | } | |
10183 | else | |
10184 | { | |
10185 | as_bad (_("unexpected register in list")); | |
10186 | break; | |
10187 | } | |
10188 | if (++reg1 == 24) | |
10189 | reg1 = 30; | |
10190 | } | |
10191 | } | |
10192 | ||
10193 | /* Encode args/statics combination. */ | |
10194 | if (args & statics) | |
10195 | as_bad (_("arg/static registers overlap")); | |
10196 | else if (args == 0xf) | |
10197 | /* All $a0-$a3 are args. */ | |
10198 | opcode |= MIPS16_ALL_ARGS << 16; | |
10199 | else if (statics == 0xf) | |
10200 | /* All $a0-$a3 are statics. */ | |
10201 | opcode |= MIPS16_ALL_STATICS << 16; | |
10202 | else | |
10203 | { | |
10204 | int narg = 0, nstat = 0; | |
10205 | ||
10206 | /* Count arg registers. */ | |
10207 | while (args & 0x1) | |
10208 | { | |
10209 | args >>= 1; | |
10210 | narg++; | |
10211 | } | |
10212 | if (args != 0) | |
10213 | as_bad (_("invalid arg register list")); | |
10214 | ||
10215 | /* Count static registers. */ | |
10216 | while (statics & 0x8) | |
10217 | { | |
10218 | statics = (statics << 1) & 0xf; | |
10219 | nstat++; | |
10220 | } | |
10221 | if (statics != 0) | |
10222 | as_bad (_("invalid static register list")); | |
10223 | ||
10224 | /* Encode args/statics. */ | |
10225 | opcode |= ((narg << 2) | nstat) << 16; | |
10226 | } | |
10227 | ||
10228 | /* Encode $s0/$s1. */ | |
10229 | if (sregs & (1 << 0)) /* $s0 */ | |
10230 | opcode |= 0x20; | |
10231 | if (sregs & (1 << 1)) /* $s1 */ | |
10232 | opcode |= 0x10; | |
10233 | sregs >>= 2; | |
10234 | ||
10235 | if (sregs != 0) | |
10236 | { | |
10237 | /* Count regs $s2-$s8. */ | |
10238 | int nsreg = 0; | |
10239 | while (sregs & 1) | |
10240 | { | |
10241 | sregs >>= 1; | |
10242 | nsreg++; | |
10243 | } | |
10244 | if (sregs != 0) | |
10245 | as_bad (_("invalid static register list")); | |
10246 | /* Encode $s2-$s8. */ | |
10247 | opcode |= nsreg << 24; | |
10248 | } | |
10249 | ||
10250 | /* Encode frame size. */ | |
10251 | if (!seen_framesz) | |
10252 | as_bad (_("missing frame size")); | |
10253 | else if ((framesz & 7) != 0 || framesz < 0 | |
10254 | || framesz > 0xff * 8) | |
10255 | as_bad (_("invalid frame size")); | |
10256 | else if (framesz != 128 || (opcode >> 16) != 0) | |
10257 | { | |
10258 | framesz /= 8; | |
10259 | opcode |= (((framesz & 0xf0) << 16) | |
10260 | | (framesz & 0x0f)); | |
10261 | } | |
10262 | ||
10263 | /* Finally build the instruction. */ | |
10264 | if ((opcode >> 16) != 0 || framesz == 0) | |
10265 | { | |
10266 | ip->use_extend = TRUE; | |
10267 | ip->extend = opcode >> 16; | |
10268 | } | |
10269 | ip->insn_opcode |= opcode & 0x7f; | |
10270 | } | |
10271 | continue; | |
10272 | ||
252b5132 RH |
10273 | case 'e': /* extend code */ |
10274 | my_getExpression (&imm_expr, s); | |
10275 | check_absolute_expr (ip, &imm_expr); | |
10276 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
10277 | { | |
10278 | as_warn (_("Invalid value for `%s' (%lu)"), | |
10279 | ip->insn_mo->name, | |
10280 | (unsigned long) imm_expr.X_add_number); | |
10281 | imm_expr.X_add_number &= 0x7ff; | |
10282 | } | |
10283 | ip->insn_opcode |= imm_expr.X_add_number; | |
10284 | imm_expr.X_op = O_absent; | |
10285 | s = expr_end; | |
10286 | continue; | |
10287 | ||
10288 | default: | |
10289 | internalError (); | |
10290 | } | |
10291 | break; | |
10292 | } | |
10293 | ||
10294 | /* Args don't match. */ | |
10295 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
10296 | strcmp (insn->name, insn[1].name) == 0) | |
10297 | { | |
10298 | ++insn; | |
10299 | s = argsstart; | |
10300 | continue; | |
10301 | } | |
10302 | ||
10303 | insn_error = _("illegal operands"); | |
10304 | ||
10305 | return; | |
10306 | } | |
10307 | } | |
10308 | ||
10309 | /* This structure holds information we know about a mips16 immediate | |
10310 | argument type. */ | |
10311 | ||
e972090a NC |
10312 | struct mips16_immed_operand |
10313 | { | |
252b5132 RH |
10314 | /* The type code used in the argument string in the opcode table. */ |
10315 | int type; | |
10316 | /* The number of bits in the short form of the opcode. */ | |
10317 | int nbits; | |
10318 | /* The number of bits in the extended form of the opcode. */ | |
10319 | int extbits; | |
10320 | /* The amount by which the short form is shifted when it is used; | |
10321 | for example, the sw instruction has a shift count of 2. */ | |
10322 | int shift; | |
10323 | /* The amount by which the short form is shifted when it is stored | |
10324 | into the instruction code. */ | |
10325 | int op_shift; | |
10326 | /* Non-zero if the short form is unsigned. */ | |
10327 | int unsp; | |
10328 | /* Non-zero if the extended form is unsigned. */ | |
10329 | int extu; | |
10330 | /* Non-zero if the value is PC relative. */ | |
10331 | int pcrel; | |
10332 | }; | |
10333 | ||
10334 | /* The mips16 immediate operand types. */ | |
10335 | ||
10336 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
10337 | { | |
10338 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10339 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10340 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10341 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10342 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
10343 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10344 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10345 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10346 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10347 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
10348 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10349 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10350 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10351 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
10352 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10353 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10354 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10355 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10356 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
10357 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
10358 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
10359 | }; | |
10360 | ||
10361 | #define MIPS16_NUM_IMMED \ | |
10362 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
10363 | ||
10364 | /* Handle a mips16 instruction with an immediate value. This or's the | |
10365 | small immediate value into *INSN. It sets *USE_EXTEND to indicate | |
10366 | whether an extended value is needed; if one is needed, it sets | |
10367 | *EXTEND to the value. The argument type is TYPE. The value is VAL. | |
10368 | If SMALL is true, an unextended opcode was explicitly requested. | |
10369 | If EXT is true, an extended opcode was explicitly requested. If | |
10370 | WARN is true, warn if EXT does not match reality. */ | |
10371 | ||
10372 | static void | |
17a2f251 TS |
10373 | mips16_immed (char *file, unsigned int line, int type, offsetT val, |
10374 | bfd_boolean warn, bfd_boolean small, bfd_boolean ext, | |
10375 | unsigned long *insn, bfd_boolean *use_extend, | |
10376 | unsigned short *extend) | |
252b5132 | 10377 | { |
3994f87e | 10378 | const struct mips16_immed_operand *op; |
252b5132 | 10379 | int mintiny, maxtiny; |
b34976b6 | 10380 | bfd_boolean needext; |
252b5132 RH |
10381 | |
10382 | op = mips16_immed_operands; | |
10383 | while (op->type != type) | |
10384 | { | |
10385 | ++op; | |
10386 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
10387 | } | |
10388 | ||
10389 | if (op->unsp) | |
10390 | { | |
10391 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
10392 | { | |
10393 | mintiny = 1; | |
10394 | maxtiny = 1 << op->nbits; | |
10395 | } | |
10396 | else | |
10397 | { | |
10398 | mintiny = 0; | |
10399 | maxtiny = (1 << op->nbits) - 1; | |
10400 | } | |
10401 | } | |
10402 | else | |
10403 | { | |
10404 | mintiny = - (1 << (op->nbits - 1)); | |
10405 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
10406 | } | |
10407 | ||
10408 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
10409 | if (type == 'p' || type == 'q') | |
10410 | val /= 2; | |
10411 | ||
10412 | if ((val & ((1 << op->shift) - 1)) != 0 | |
10413 | || val < (mintiny << op->shift) | |
10414 | || val > (maxtiny << op->shift)) | |
b34976b6 | 10415 | needext = TRUE; |
252b5132 | 10416 | else |
b34976b6 | 10417 | needext = FALSE; |
252b5132 RH |
10418 | |
10419 | if (warn && ext && ! needext) | |
beae10d5 KH |
10420 | as_warn_where (file, line, |
10421 | _("extended operand requested but not required")); | |
252b5132 RH |
10422 | if (small && needext) |
10423 | as_bad_where (file, line, _("invalid unextended operand value")); | |
10424 | ||
10425 | if (small || (! ext && ! needext)) | |
10426 | { | |
10427 | int insnval; | |
10428 | ||
b34976b6 | 10429 | *use_extend = FALSE; |
252b5132 RH |
10430 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); |
10431 | insnval <<= op->op_shift; | |
10432 | *insn |= insnval; | |
10433 | } | |
10434 | else | |
10435 | { | |
10436 | long minext, maxext; | |
10437 | int extval; | |
10438 | ||
10439 | if (op->extu) | |
10440 | { | |
10441 | minext = 0; | |
10442 | maxext = (1 << op->extbits) - 1; | |
10443 | } | |
10444 | else | |
10445 | { | |
10446 | minext = - (1 << (op->extbits - 1)); | |
10447 | maxext = (1 << (op->extbits - 1)) - 1; | |
10448 | } | |
10449 | if (val < minext || val > maxext) | |
10450 | as_bad_where (file, line, | |
10451 | _("operand value out of range for instruction")); | |
10452 | ||
b34976b6 | 10453 | *use_extend = TRUE; |
252b5132 RH |
10454 | if (op->extbits == 16) |
10455 | { | |
10456 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
10457 | val &= 0x1f; | |
10458 | } | |
10459 | else if (op->extbits == 15) | |
10460 | { | |
10461 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
10462 | val &= 0xf; | |
10463 | } | |
10464 | else | |
10465 | { | |
10466 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
10467 | val = 0; | |
10468 | } | |
10469 | ||
10470 | *extend = (unsigned short) extval; | |
10471 | *insn |= val; | |
10472 | } | |
10473 | } | |
10474 | \f | |
d6f16593 | 10475 | struct percent_op_match |
ad8d3bb3 | 10476 | { |
5e0116d5 RS |
10477 | const char *str; |
10478 | bfd_reloc_code_real_type reloc; | |
d6f16593 MR |
10479 | }; |
10480 | ||
10481 | static const struct percent_op_match mips_percent_op[] = | |
ad8d3bb3 | 10482 | { |
5e0116d5 | 10483 | {"%lo", BFD_RELOC_LO16}, |
ad8d3bb3 | 10484 | #ifdef OBJ_ELF |
5e0116d5 RS |
10485 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
10486 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
10487 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
10488 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
10489 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
10490 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
10491 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
10492 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
10493 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
10494 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
10495 | {"%half", BFD_RELOC_16}, | |
10496 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
10497 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
10498 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
3f98094e DJ |
10499 | {"%tlsgd", BFD_RELOC_MIPS_TLS_GD}, |
10500 | {"%tlsldm", BFD_RELOC_MIPS_TLS_LDM}, | |
10501 | {"%dtprel_hi", BFD_RELOC_MIPS_TLS_DTPREL_HI16}, | |
10502 | {"%dtprel_lo", BFD_RELOC_MIPS_TLS_DTPREL_LO16}, | |
10503 | {"%tprel_hi", BFD_RELOC_MIPS_TLS_TPREL_HI16}, | |
10504 | {"%tprel_lo", BFD_RELOC_MIPS_TLS_TPREL_LO16}, | |
10505 | {"%gottprel", BFD_RELOC_MIPS_TLS_GOTTPREL}, | |
ad8d3bb3 | 10506 | #endif |
5e0116d5 | 10507 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
10508 | }; |
10509 | ||
d6f16593 MR |
10510 | static const struct percent_op_match mips16_percent_op[] = |
10511 | { | |
10512 | {"%lo", BFD_RELOC_MIPS16_LO16}, | |
10513 | {"%gprel", BFD_RELOC_MIPS16_GPREL}, | |
10514 | {"%hi", BFD_RELOC_MIPS16_HI16_S} | |
10515 | }; | |
10516 | ||
252b5132 | 10517 | |
5e0116d5 RS |
10518 | /* Return true if *STR points to a relocation operator. When returning true, |
10519 | move *STR over the operator and store its relocation code in *RELOC. | |
10520 | Leave both *STR and *RELOC alone when returning false. */ | |
10521 | ||
10522 | static bfd_boolean | |
17a2f251 | 10523 | parse_relocation (char **str, bfd_reloc_code_real_type *reloc) |
252b5132 | 10524 | { |
d6f16593 MR |
10525 | const struct percent_op_match *percent_op; |
10526 | size_t limit, i; | |
10527 | ||
10528 | if (mips_opts.mips16) | |
10529 | { | |
10530 | percent_op = mips16_percent_op; | |
10531 | limit = ARRAY_SIZE (mips16_percent_op); | |
10532 | } | |
10533 | else | |
10534 | { | |
10535 | percent_op = mips_percent_op; | |
10536 | limit = ARRAY_SIZE (mips_percent_op); | |
10537 | } | |
76b3015f | 10538 | |
d6f16593 | 10539 | for (i = 0; i < limit; i++) |
5e0116d5 | 10540 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) |
394f9b3a | 10541 | { |
3f98094e DJ |
10542 | int len = strlen (percent_op[i].str); |
10543 | ||
10544 | if (!ISSPACE ((*str)[len]) && (*str)[len] != '(') | |
10545 | continue; | |
10546 | ||
5e0116d5 RS |
10547 | *str += strlen (percent_op[i].str); |
10548 | *reloc = percent_op[i].reloc; | |
394f9b3a | 10549 | |
5e0116d5 RS |
10550 | /* Check whether the output BFD supports this relocation. |
10551 | If not, issue an error and fall back on something safe. */ | |
10552 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 10553 | { |
5e0116d5 RS |
10554 | as_bad ("relocation %s isn't supported by the current ABI", |
10555 | percent_op[i].str); | |
01a3f561 | 10556 | *reloc = BFD_RELOC_UNUSED; |
394f9b3a | 10557 | } |
5e0116d5 | 10558 | return TRUE; |
394f9b3a | 10559 | } |
5e0116d5 | 10560 | return FALSE; |
394f9b3a | 10561 | } |
ad8d3bb3 | 10562 | |
ad8d3bb3 | 10563 | |
5e0116d5 RS |
10564 | /* Parse string STR as a 16-bit relocatable operand. Store the |
10565 | expression in *EP and the relocations in the array starting | |
10566 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 10567 | |
01a3f561 | 10568 | On exit, EXPR_END points to the first character after the expression. */ |
ad8d3bb3 | 10569 | |
5e0116d5 | 10570 | static size_t |
17a2f251 TS |
10571 | my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc, |
10572 | char *str) | |
ad8d3bb3 | 10573 | { |
5e0116d5 RS |
10574 | bfd_reloc_code_real_type reversed_reloc[3]; |
10575 | size_t reloc_index, i; | |
09b8f35a RS |
10576 | int crux_depth, str_depth; |
10577 | char *crux; | |
5e0116d5 RS |
10578 | |
10579 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
10580 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
10581 | of the main expression and with CRUX_DEPTH containing the number | |
10582 | of open brackets at that point. */ | |
10583 | reloc_index = -1; | |
10584 | str_depth = 0; | |
10585 | do | |
fb1b3232 | 10586 | { |
09b8f35a RS |
10587 | reloc_index++; |
10588 | crux = str; | |
10589 | crux_depth = str_depth; | |
10590 | ||
10591 | /* Skip over whitespace and brackets, keeping count of the number | |
10592 | of brackets. */ | |
10593 | while (*str == ' ' || *str == '\t' || *str == '(') | |
10594 | if (*str++ == '(') | |
10595 | str_depth++; | |
5e0116d5 | 10596 | } |
09b8f35a RS |
10597 | while (*str == '%' |
10598 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
10599 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 10600 | |
09b8f35a | 10601 | my_getExpression (ep, crux); |
5e0116d5 | 10602 | str = expr_end; |
394f9b3a | 10603 | |
5e0116d5 | 10604 | /* Match every open bracket. */ |
09b8f35a | 10605 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 10606 | if (*str++ == ')') |
09b8f35a | 10607 | crux_depth--; |
394f9b3a | 10608 | |
09b8f35a | 10609 | if (crux_depth > 0) |
5e0116d5 | 10610 | as_bad ("unclosed '('"); |
394f9b3a | 10611 | |
5e0116d5 | 10612 | expr_end = str; |
252b5132 | 10613 | |
01a3f561 | 10614 | if (reloc_index != 0) |
64bdfcaf RS |
10615 | { |
10616 | prev_reloc_op_frag = frag_now; | |
10617 | for (i = 0; i < reloc_index; i++) | |
10618 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
10619 | } | |
fb1b3232 | 10620 | |
5e0116d5 | 10621 | return reloc_index; |
252b5132 RH |
10622 | } |
10623 | ||
10624 | static void | |
17a2f251 | 10625 | my_getExpression (expressionS *ep, char *str) |
252b5132 RH |
10626 | { |
10627 | char *save_in; | |
98aa84af | 10628 | valueT val; |
252b5132 RH |
10629 | |
10630 | save_in = input_line_pointer; | |
10631 | input_line_pointer = str; | |
10632 | expression (ep); | |
10633 | expr_end = input_line_pointer; | |
10634 | input_line_pointer = save_in; | |
10635 | ||
10636 | /* If we are in mips16 mode, and this is an expression based on `.', | |
10637 | then we bump the value of the symbol by 1 since that is how other | |
10638 | text symbols are handled. We don't bother to handle complex | |
10639 | expressions, just `.' plus or minus a constant. */ | |
10640 | if (mips_opts.mips16 | |
10641 | && ep->X_op == O_symbol | |
10642 | && strcmp (S_GET_NAME (ep->X_add_symbol), FAKE_LABEL_NAME) == 0 | |
10643 | && S_GET_SEGMENT (ep->X_add_symbol) == now_seg | |
49309057 ILT |
10644 | && symbol_get_frag (ep->X_add_symbol) == frag_now |
10645 | && symbol_constant_p (ep->X_add_symbol) | |
98aa84af AM |
10646 | && (val = S_GET_VALUE (ep->X_add_symbol)) == frag_now_fix ()) |
10647 | S_SET_VALUE (ep->X_add_symbol, val + 1); | |
252b5132 RH |
10648 | } |
10649 | ||
10650 | /* Turn a string in input_line_pointer into a floating point constant | |
bc0d738a NC |
10651 | of type TYPE, and store the appropriate bytes in *LITP. The number |
10652 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
252b5132 RH |
10653 | returned, or NULL on OK. */ |
10654 | ||
10655 | char * | |
17a2f251 | 10656 | md_atof (int type, char *litP, int *sizeP) |
252b5132 RH |
10657 | { |
10658 | int prec; | |
10659 | LITTLENUM_TYPE words[4]; | |
10660 | char *t; | |
10661 | int i; | |
10662 | ||
10663 | switch (type) | |
10664 | { | |
10665 | case 'f': | |
10666 | prec = 2; | |
10667 | break; | |
10668 | ||
10669 | case 'd': | |
10670 | prec = 4; | |
10671 | break; | |
10672 | ||
10673 | default: | |
10674 | *sizeP = 0; | |
10675 | return _("bad call to md_atof"); | |
10676 | } | |
10677 | ||
10678 | t = atof_ieee (input_line_pointer, type, words); | |
10679 | if (t) | |
10680 | input_line_pointer = t; | |
10681 | ||
10682 | *sizeP = prec * 2; | |
10683 | ||
10684 | if (! target_big_endian) | |
10685 | { | |
10686 | for (i = prec - 1; i >= 0; i--) | |
10687 | { | |
17a2f251 | 10688 | md_number_to_chars (litP, words[i], 2); |
252b5132 RH |
10689 | litP += 2; |
10690 | } | |
10691 | } | |
10692 | else | |
10693 | { | |
10694 | for (i = 0; i < prec; i++) | |
10695 | { | |
17a2f251 | 10696 | md_number_to_chars (litP, words[i], 2); |
252b5132 RH |
10697 | litP += 2; |
10698 | } | |
10699 | } | |
bdaaa2e1 | 10700 | |
252b5132 RH |
10701 | return NULL; |
10702 | } | |
10703 | ||
10704 | void | |
17a2f251 | 10705 | md_number_to_chars (char *buf, valueT val, int n) |
252b5132 RH |
10706 | { |
10707 | if (target_big_endian) | |
10708 | number_to_chars_bigendian (buf, val, n); | |
10709 | else | |
10710 | number_to_chars_littleendian (buf, val, n); | |
10711 | } | |
10712 | \f | |
ae948b86 | 10713 | #ifdef OBJ_ELF |
e013f690 TS |
10714 | static int support_64bit_objects(void) |
10715 | { | |
10716 | const char **list, **l; | |
aa3d8fdf | 10717 | int yes; |
e013f690 TS |
10718 | |
10719 | list = bfd_target_list (); | |
10720 | for (l = list; *l != NULL; l++) | |
10721 | #ifdef TE_TMIPS | |
10722 | /* This is traditional mips */ | |
10723 | if (strcmp (*l, "elf64-tradbigmips") == 0 | |
10724 | || strcmp (*l, "elf64-tradlittlemips") == 0) | |
10725 | #else | |
10726 | if (strcmp (*l, "elf64-bigmips") == 0 | |
10727 | || strcmp (*l, "elf64-littlemips") == 0) | |
10728 | #endif | |
10729 | break; | |
aa3d8fdf | 10730 | yes = (*l != NULL); |
e013f690 | 10731 | free (list); |
aa3d8fdf | 10732 | return yes; |
e013f690 | 10733 | } |
ae948b86 | 10734 | #endif /* OBJ_ELF */ |
e013f690 | 10735 | |
78849248 | 10736 | const char *md_shortopts = "O::g::G:"; |
252b5132 | 10737 | |
e972090a NC |
10738 | struct option md_longopts[] = |
10739 | { | |
f9b4148d CD |
10740 | /* Options which specify architecture. */ |
10741 | #define OPTION_ARCH_BASE (OPTION_MD_BASE) | |
10742 | #define OPTION_MARCH (OPTION_ARCH_BASE + 0) | |
10743 | {"march", required_argument, NULL, OPTION_MARCH}, | |
10744 | #define OPTION_MTUNE (OPTION_ARCH_BASE + 1) | |
10745 | {"mtune", required_argument, NULL, OPTION_MTUNE}, | |
10746 | #define OPTION_MIPS1 (OPTION_ARCH_BASE + 2) | |
252b5132 RH |
10747 | {"mips0", no_argument, NULL, OPTION_MIPS1}, |
10748 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
f9b4148d | 10749 | #define OPTION_MIPS2 (OPTION_ARCH_BASE + 3) |
252b5132 | 10750 | {"mips2", no_argument, NULL, OPTION_MIPS2}, |
f9b4148d | 10751 | #define OPTION_MIPS3 (OPTION_ARCH_BASE + 4) |
252b5132 | 10752 | {"mips3", no_argument, NULL, OPTION_MIPS3}, |
f9b4148d | 10753 | #define OPTION_MIPS4 (OPTION_ARCH_BASE + 5) |
252b5132 | 10754 | {"mips4", no_argument, NULL, OPTION_MIPS4}, |
f9b4148d | 10755 | #define OPTION_MIPS5 (OPTION_ARCH_BASE + 6) |
ae948b86 | 10756 | {"mips5", no_argument, NULL, OPTION_MIPS5}, |
f9b4148d | 10757 | #define OPTION_MIPS32 (OPTION_ARCH_BASE + 7) |
ae948b86 | 10758 | {"mips32", no_argument, NULL, OPTION_MIPS32}, |
f9b4148d | 10759 | #define OPTION_MIPS64 (OPTION_ARCH_BASE + 8) |
ae948b86 | 10760 | {"mips64", no_argument, NULL, OPTION_MIPS64}, |
f9b4148d CD |
10761 | #define OPTION_MIPS32R2 (OPTION_ARCH_BASE + 9) |
10762 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, | |
5f74bc13 CD |
10763 | #define OPTION_MIPS64R2 (OPTION_ARCH_BASE + 10) |
10764 | {"mips64r2", no_argument, NULL, OPTION_MIPS64R2}, | |
f9b4148d CD |
10765 | |
10766 | /* Options which specify Application Specific Extensions (ASEs). */ | |
5f74bc13 | 10767 | #define OPTION_ASE_BASE (OPTION_ARCH_BASE + 11) |
f9b4148d CD |
10768 | #define OPTION_MIPS16 (OPTION_ASE_BASE + 0) |
10769 | {"mips16", no_argument, NULL, OPTION_MIPS16}, | |
10770 | #define OPTION_NO_MIPS16 (OPTION_ASE_BASE + 1) | |
10771 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, | |
10772 | #define OPTION_MIPS3D (OPTION_ASE_BASE + 2) | |
10773 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, | |
10774 | #define OPTION_NO_MIPS3D (OPTION_ASE_BASE + 3) | |
10775 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, | |
10776 | #define OPTION_MDMX (OPTION_ASE_BASE + 4) | |
10777 | {"mdmx", no_argument, NULL, OPTION_MDMX}, | |
10778 | #define OPTION_NO_MDMX (OPTION_ASE_BASE + 5) | |
10779 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, | |
74cd071d CF |
10780 | #define OPTION_DSP (OPTION_ASE_BASE + 6) |
10781 | {"mdsp", no_argument, NULL, OPTION_DSP}, | |
10782 | #define OPTION_NO_DSP (OPTION_ASE_BASE + 7) | |
10783 | {"mno-dsp", no_argument, NULL, OPTION_NO_DSP}, | |
ef2e4d86 CF |
10784 | #define OPTION_MT (OPTION_ASE_BASE + 8) |
10785 | {"mmt", no_argument, NULL, OPTION_MT}, | |
10786 | #define OPTION_NO_MT (OPTION_ASE_BASE + 9) | |
10787 | {"mno-mt", no_argument, NULL, OPTION_NO_MT}, | |
e16bfa71 TS |
10788 | #define OPTION_SMARTMIPS (OPTION_ASE_BASE + 10) |
10789 | {"msmartmips", no_argument, NULL, OPTION_SMARTMIPS}, | |
10790 | #define OPTION_NO_SMARTMIPS (OPTION_ASE_BASE + 11) | |
10791 | {"mno-smartmips", no_argument, NULL, OPTION_NO_SMARTMIPS}, | |
f9b4148d CD |
10792 | |
10793 | /* Old-style architecture options. Don't add more of these. */ | |
e16bfa71 | 10794 | #define OPTION_COMPAT_ARCH_BASE (OPTION_ASE_BASE + 12) |
f9b4148d CD |
10795 | #define OPTION_M4650 (OPTION_COMPAT_ARCH_BASE + 0) |
10796 | {"m4650", no_argument, NULL, OPTION_M4650}, | |
10797 | #define OPTION_NO_M4650 (OPTION_COMPAT_ARCH_BASE + 1) | |
10798 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, | |
10799 | #define OPTION_M4010 (OPTION_COMPAT_ARCH_BASE + 2) | |
10800 | {"m4010", no_argument, NULL, OPTION_M4010}, | |
10801 | #define OPTION_NO_M4010 (OPTION_COMPAT_ARCH_BASE + 3) | |
10802 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, | |
10803 | #define OPTION_M4100 (OPTION_COMPAT_ARCH_BASE + 4) | |
10804 | {"m4100", no_argument, NULL, OPTION_M4100}, | |
10805 | #define OPTION_NO_M4100 (OPTION_COMPAT_ARCH_BASE + 5) | |
10806 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, | |
10807 | #define OPTION_M3900 (OPTION_COMPAT_ARCH_BASE + 6) | |
10808 | {"m3900", no_argument, NULL, OPTION_M3900}, | |
10809 | #define OPTION_NO_M3900 (OPTION_COMPAT_ARCH_BASE + 7) | |
10810 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, | |
10811 | ||
10812 | /* Options which enable bug fixes. */ | |
10813 | #define OPTION_FIX_BASE (OPTION_COMPAT_ARCH_BASE + 8) | |
10814 | #define OPTION_M7000_HILO_FIX (OPTION_FIX_BASE + 0) | |
10815 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, | |
10816 | #define OPTION_MNO_7000_HILO_FIX (OPTION_FIX_BASE + 1) | |
10817 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
10818 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
d766e8ec RS |
10819 | #define OPTION_FIX_VR4120 (OPTION_FIX_BASE + 2) |
10820 | #define OPTION_NO_FIX_VR4120 (OPTION_FIX_BASE + 3) | |
10821 | {"mfix-vr4120", no_argument, NULL, OPTION_FIX_VR4120}, | |
10822 | {"mno-fix-vr4120", no_argument, NULL, OPTION_NO_FIX_VR4120}, | |
7d8e00cf RS |
10823 | #define OPTION_FIX_VR4130 (OPTION_FIX_BASE + 4) |
10824 | #define OPTION_NO_FIX_VR4130 (OPTION_FIX_BASE + 5) | |
10825 | {"mfix-vr4130", no_argument, NULL, OPTION_FIX_VR4130}, | |
10826 | {"mno-fix-vr4130", no_argument, NULL, OPTION_NO_FIX_VR4130}, | |
f9b4148d CD |
10827 | |
10828 | /* Miscellaneous options. */ | |
7d8e00cf | 10829 | #define OPTION_MISC_BASE (OPTION_FIX_BASE + 6) |
1ffcab4b | 10830 | #define OPTION_TRAP (OPTION_MISC_BASE + 0) |
252b5132 RH |
10831 | {"trap", no_argument, NULL, OPTION_TRAP}, |
10832 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
1ffcab4b | 10833 | #define OPTION_BREAK (OPTION_MISC_BASE + 1) |
252b5132 RH |
10834 | {"break", no_argument, NULL, OPTION_BREAK}, |
10835 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
1ffcab4b | 10836 | #define OPTION_EB (OPTION_MISC_BASE + 2) |
252b5132 | 10837 | {"EB", no_argument, NULL, OPTION_EB}, |
1ffcab4b | 10838 | #define OPTION_EL (OPTION_MISC_BASE + 3) |
252b5132 | 10839 | {"EL", no_argument, NULL, OPTION_EL}, |
1ffcab4b | 10840 | #define OPTION_FP32 (OPTION_MISC_BASE + 4) |
ae948b86 | 10841 | {"mfp32", no_argument, NULL, OPTION_FP32}, |
1ffcab4b | 10842 | #define OPTION_GP32 (OPTION_MISC_BASE + 5) |
c97ef257 | 10843 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
1ffcab4b | 10844 | #define OPTION_CONSTRUCT_FLOATS (OPTION_MISC_BASE + 6) |
119d663a | 10845 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
1ffcab4b | 10846 | #define OPTION_NO_CONSTRUCT_FLOATS (OPTION_MISC_BASE + 7) |
119d663a | 10847 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
1ffcab4b | 10848 | #define OPTION_FP64 (OPTION_MISC_BASE + 8) |
316f5878 | 10849 | {"mfp64", no_argument, NULL, OPTION_FP64}, |
1ffcab4b | 10850 | #define OPTION_GP64 (OPTION_MISC_BASE + 9) |
ae948b86 | 10851 | {"mgp64", no_argument, NULL, OPTION_GP64}, |
1ffcab4b CD |
10852 | #define OPTION_RELAX_BRANCH (OPTION_MISC_BASE + 10) |
10853 | #define OPTION_NO_RELAX_BRANCH (OPTION_MISC_BASE + 11) | |
4a6a3df4 AO |
10854 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, |
10855 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
aa6975fb ILT |
10856 | #define OPTION_MSHARED (OPTION_MISC_BASE + 12) |
10857 | #define OPTION_MNO_SHARED (OPTION_MISC_BASE + 13) | |
10858 | {"mshared", no_argument, NULL, OPTION_MSHARED}, | |
10859 | {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, | |
aed1a261 RS |
10860 | #define OPTION_MSYM32 (OPTION_MISC_BASE + 14) |
10861 | #define OPTION_MNO_SYM32 (OPTION_MISC_BASE + 15) | |
10862 | {"msym32", no_argument, NULL, OPTION_MSYM32}, | |
10863 | {"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32}, | |
f9b4148d CD |
10864 | |
10865 | /* ELF-specific options. */ | |
156c2f8b | 10866 | #ifdef OBJ_ELF |
aed1a261 | 10867 | #define OPTION_ELF_BASE (OPTION_MISC_BASE + 16) |
156c2f8b | 10868 | #define OPTION_CALL_SHARED (OPTION_ELF_BASE + 0) |
156c2f8b NC |
10869 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
10870 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
ae948b86 | 10871 | #define OPTION_NON_SHARED (OPTION_ELF_BASE + 1) |
156c2f8b | 10872 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
ae948b86 | 10873 | #define OPTION_XGOT (OPTION_ELF_BASE + 2) |
156c2f8b | 10874 | {"xgot", no_argument, NULL, OPTION_XGOT}, |
ae948b86 TS |
10875 | #define OPTION_MABI (OPTION_ELF_BASE + 3) |
10876 | {"mabi", required_argument, NULL, OPTION_MABI}, | |
10877 | #define OPTION_32 (OPTION_ELF_BASE + 4) | |
156c2f8b | 10878 | {"32", no_argument, NULL, OPTION_32}, |
ae948b86 | 10879 | #define OPTION_N32 (OPTION_ELF_BASE + 5) |
e013f690 | 10880 | {"n32", no_argument, NULL, OPTION_N32}, |
ae948b86 | 10881 | #define OPTION_64 (OPTION_ELF_BASE + 6) |
156c2f8b | 10882 | {"64", no_argument, NULL, OPTION_64}, |
ecb4347a DJ |
10883 | #define OPTION_MDEBUG (OPTION_ELF_BASE + 7) |
10884 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, | |
10885 | #define OPTION_NO_MDEBUG (OPTION_ELF_BASE + 8) | |
10886 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, | |
dcd410fe RO |
10887 | #define OPTION_PDR (OPTION_ELF_BASE + 9) |
10888 | {"mpdr", no_argument, NULL, OPTION_PDR}, | |
10889 | #define OPTION_NO_PDR (OPTION_ELF_BASE + 10) | |
10890 | {"mno-pdr", no_argument, NULL, OPTION_NO_PDR}, | |
0a44bf69 RS |
10891 | #define OPTION_MVXWORKS_PIC (OPTION_ELF_BASE + 11) |
10892 | {"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC}, | |
ae948b86 | 10893 | #endif /* OBJ_ELF */ |
f9b4148d | 10894 | |
252b5132 RH |
10895 | {NULL, no_argument, NULL, 0} |
10896 | }; | |
156c2f8b | 10897 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 10898 | |
316f5878 RS |
10899 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
10900 | NEW_VALUE. Warn if another value was already specified. Note: | |
10901 | we have to defer parsing the -march and -mtune arguments in order | |
10902 | to handle 'from-abi' correctly, since the ABI might be specified | |
10903 | in a later argument. */ | |
10904 | ||
10905 | static void | |
17a2f251 | 10906 | mips_set_option_string (const char **string_ptr, const char *new_value) |
316f5878 RS |
10907 | { |
10908 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
10909 | as_warn (_("A different %s was already specified, is now %s"), | |
10910 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
10911 | new_value); | |
10912 | ||
10913 | *string_ptr = new_value; | |
10914 | } | |
10915 | ||
252b5132 | 10916 | int |
17a2f251 | 10917 | md_parse_option (int c, char *arg) |
252b5132 RH |
10918 | { |
10919 | switch (c) | |
10920 | { | |
119d663a NC |
10921 | case OPTION_CONSTRUCT_FLOATS: |
10922 | mips_disable_float_construction = 0; | |
10923 | break; | |
bdaaa2e1 | 10924 | |
119d663a NC |
10925 | case OPTION_NO_CONSTRUCT_FLOATS: |
10926 | mips_disable_float_construction = 1; | |
10927 | break; | |
bdaaa2e1 | 10928 | |
252b5132 RH |
10929 | case OPTION_TRAP: |
10930 | mips_trap = 1; | |
10931 | break; | |
10932 | ||
10933 | case OPTION_BREAK: | |
10934 | mips_trap = 0; | |
10935 | break; | |
10936 | ||
10937 | case OPTION_EB: | |
10938 | target_big_endian = 1; | |
10939 | break; | |
10940 | ||
10941 | case OPTION_EL: | |
10942 | target_big_endian = 0; | |
10943 | break; | |
10944 | ||
10945 | case 'O': | |
10946 | if (arg && arg[1] == '0') | |
10947 | mips_optimize = 1; | |
10948 | else | |
10949 | mips_optimize = 2; | |
10950 | break; | |
10951 | ||
10952 | case 'g': | |
10953 | if (arg == NULL) | |
10954 | mips_debug = 2; | |
10955 | else | |
10956 | mips_debug = atoi (arg); | |
10957 | /* When the MIPS assembler sees -g or -g2, it does not do | |
10958 | optimizations which limit full symbolic debugging. We take | |
10959 | that to be equivalent to -O0. */ | |
10960 | if (mips_debug == 2) | |
10961 | mips_optimize = 1; | |
10962 | break; | |
10963 | ||
10964 | case OPTION_MIPS1: | |
316f5878 | 10965 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
10966 | break; |
10967 | ||
10968 | case OPTION_MIPS2: | |
316f5878 | 10969 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
10970 | break; |
10971 | ||
10972 | case OPTION_MIPS3: | |
316f5878 | 10973 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
10974 | break; |
10975 | ||
10976 | case OPTION_MIPS4: | |
316f5878 | 10977 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
10978 | break; |
10979 | ||
84ea6cf2 | 10980 | case OPTION_MIPS5: |
316f5878 | 10981 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
10982 | break; |
10983 | ||
e7af610e | 10984 | case OPTION_MIPS32: |
316f5878 | 10985 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
10986 | break; |
10987 | ||
af7ee8bf CD |
10988 | case OPTION_MIPS32R2: |
10989 | file_mips_isa = ISA_MIPS32R2; | |
10990 | break; | |
10991 | ||
5f74bc13 CD |
10992 | case OPTION_MIPS64R2: |
10993 | file_mips_isa = ISA_MIPS64R2; | |
10994 | break; | |
10995 | ||
84ea6cf2 | 10996 | case OPTION_MIPS64: |
316f5878 | 10997 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
10998 | break; |
10999 | ||
ec68c924 | 11000 | case OPTION_MTUNE: |
316f5878 RS |
11001 | mips_set_option_string (&mips_tune_string, arg); |
11002 | break; | |
ec68c924 | 11003 | |
316f5878 RS |
11004 | case OPTION_MARCH: |
11005 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
11006 | break; |
11007 | ||
11008 | case OPTION_M4650: | |
316f5878 RS |
11009 | mips_set_option_string (&mips_arch_string, "4650"); |
11010 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
11011 | break; |
11012 | ||
11013 | case OPTION_NO_M4650: | |
11014 | break; | |
11015 | ||
11016 | case OPTION_M4010: | |
316f5878 RS |
11017 | mips_set_option_string (&mips_arch_string, "4010"); |
11018 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
11019 | break; |
11020 | ||
11021 | case OPTION_NO_M4010: | |
11022 | break; | |
11023 | ||
11024 | case OPTION_M4100: | |
316f5878 RS |
11025 | mips_set_option_string (&mips_arch_string, "4100"); |
11026 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
11027 | break; |
11028 | ||
11029 | case OPTION_NO_M4100: | |
11030 | break; | |
11031 | ||
252b5132 | 11032 | case OPTION_M3900: |
316f5878 RS |
11033 | mips_set_option_string (&mips_arch_string, "3900"); |
11034 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 11035 | break; |
bdaaa2e1 | 11036 | |
252b5132 RH |
11037 | case OPTION_NO_M3900: |
11038 | break; | |
11039 | ||
deec1734 CD |
11040 | case OPTION_MDMX: |
11041 | mips_opts.ase_mdmx = 1; | |
11042 | break; | |
11043 | ||
11044 | case OPTION_NO_MDMX: | |
11045 | mips_opts.ase_mdmx = 0; | |
11046 | break; | |
11047 | ||
74cd071d CF |
11048 | case OPTION_DSP: |
11049 | mips_opts.ase_dsp = 1; | |
11050 | break; | |
11051 | ||
11052 | case OPTION_NO_DSP: | |
11053 | mips_opts.ase_dsp = 0; | |
11054 | break; | |
11055 | ||
ef2e4d86 CF |
11056 | case OPTION_MT: |
11057 | mips_opts.ase_mt = 1; | |
11058 | break; | |
11059 | ||
11060 | case OPTION_NO_MT: | |
11061 | mips_opts.ase_mt = 0; | |
11062 | break; | |
11063 | ||
252b5132 RH |
11064 | case OPTION_MIPS16: |
11065 | mips_opts.mips16 = 1; | |
7d10b47d | 11066 | mips_no_prev_insn (); |
252b5132 RH |
11067 | break; |
11068 | ||
11069 | case OPTION_NO_MIPS16: | |
11070 | mips_opts.mips16 = 0; | |
7d10b47d | 11071 | mips_no_prev_insn (); |
252b5132 RH |
11072 | break; |
11073 | ||
1f25f5d3 CD |
11074 | case OPTION_MIPS3D: |
11075 | mips_opts.ase_mips3d = 1; | |
11076 | break; | |
11077 | ||
11078 | case OPTION_NO_MIPS3D: | |
11079 | mips_opts.ase_mips3d = 0; | |
11080 | break; | |
11081 | ||
e16bfa71 TS |
11082 | case OPTION_SMARTMIPS: |
11083 | mips_opts.ase_smartmips = 1; | |
11084 | break; | |
11085 | ||
11086 | case OPTION_NO_SMARTMIPS: | |
11087 | mips_opts.ase_smartmips = 0; | |
11088 | break; | |
11089 | ||
d766e8ec RS |
11090 | case OPTION_FIX_VR4120: |
11091 | mips_fix_vr4120 = 1; | |
60b63b72 RS |
11092 | break; |
11093 | ||
d766e8ec RS |
11094 | case OPTION_NO_FIX_VR4120: |
11095 | mips_fix_vr4120 = 0; | |
60b63b72 RS |
11096 | break; |
11097 | ||
7d8e00cf RS |
11098 | case OPTION_FIX_VR4130: |
11099 | mips_fix_vr4130 = 1; | |
11100 | break; | |
11101 | ||
11102 | case OPTION_NO_FIX_VR4130: | |
11103 | mips_fix_vr4130 = 0; | |
11104 | break; | |
11105 | ||
4a6a3df4 AO |
11106 | case OPTION_RELAX_BRANCH: |
11107 | mips_relax_branch = 1; | |
11108 | break; | |
11109 | ||
11110 | case OPTION_NO_RELAX_BRANCH: | |
11111 | mips_relax_branch = 0; | |
11112 | break; | |
11113 | ||
aa6975fb ILT |
11114 | case OPTION_MSHARED: |
11115 | mips_in_shared = TRUE; | |
11116 | break; | |
11117 | ||
11118 | case OPTION_MNO_SHARED: | |
11119 | mips_in_shared = FALSE; | |
11120 | break; | |
11121 | ||
aed1a261 RS |
11122 | case OPTION_MSYM32: |
11123 | mips_opts.sym32 = TRUE; | |
11124 | break; | |
11125 | ||
11126 | case OPTION_MNO_SYM32: | |
11127 | mips_opts.sym32 = FALSE; | |
11128 | break; | |
11129 | ||
0f074f60 | 11130 | #ifdef OBJ_ELF |
252b5132 RH |
11131 | /* When generating ELF code, we permit -KPIC and -call_shared to |
11132 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
11133 | intended to be compatible with Irix 5. */ | |
11134 | case OPTION_CALL_SHARED: | |
11135 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
11136 | { | |
11137 | as_bad (_("-call_shared is supported only for ELF format")); | |
11138 | return 0; | |
11139 | } | |
11140 | mips_pic = SVR4_PIC; | |
143d77c5 | 11141 | mips_abicalls = TRUE; |
252b5132 RH |
11142 | break; |
11143 | ||
11144 | case OPTION_NON_SHARED: | |
11145 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
11146 | { | |
11147 | as_bad (_("-non_shared is supported only for ELF format")); | |
11148 | return 0; | |
11149 | } | |
11150 | mips_pic = NO_PIC; | |
143d77c5 | 11151 | mips_abicalls = FALSE; |
252b5132 RH |
11152 | break; |
11153 | ||
44075ae2 TS |
11154 | /* The -xgot option tells the assembler to use 32 bit offsets |
11155 | when accessing the got in SVR4_PIC mode. It is for Irix | |
252b5132 RH |
11156 | compatibility. */ |
11157 | case OPTION_XGOT: | |
11158 | mips_big_got = 1; | |
11159 | break; | |
0f074f60 | 11160 | #endif /* OBJ_ELF */ |
252b5132 RH |
11161 | |
11162 | case 'G': | |
6caf9ef4 TS |
11163 | g_switch_value = atoi (arg); |
11164 | g_switch_seen = 1; | |
252b5132 RH |
11165 | break; |
11166 | ||
0f074f60 | 11167 | #ifdef OBJ_ELF |
34ba82a8 TS |
11168 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
11169 | and -mabi=64. */ | |
252b5132 | 11170 | case OPTION_32: |
34ba82a8 TS |
11171 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11172 | { | |
11173 | as_bad (_("-32 is supported for ELF format only")); | |
11174 | return 0; | |
11175 | } | |
316f5878 | 11176 | mips_abi = O32_ABI; |
252b5132 RH |
11177 | break; |
11178 | ||
e013f690 | 11179 | case OPTION_N32: |
34ba82a8 TS |
11180 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11181 | { | |
11182 | as_bad (_("-n32 is supported for ELF format only")); | |
11183 | return 0; | |
11184 | } | |
316f5878 | 11185 | mips_abi = N32_ABI; |
e013f690 | 11186 | break; |
252b5132 | 11187 | |
e013f690 | 11188 | case OPTION_64: |
34ba82a8 TS |
11189 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11190 | { | |
11191 | as_bad (_("-64 is supported for ELF format only")); | |
11192 | return 0; | |
11193 | } | |
316f5878 | 11194 | mips_abi = N64_ABI; |
e013f690 TS |
11195 | if (! support_64bit_objects()) |
11196 | as_fatal (_("No compiled in support for 64 bit object file format")); | |
252b5132 | 11197 | break; |
ae948b86 | 11198 | #endif /* OBJ_ELF */ |
252b5132 | 11199 | |
c97ef257 | 11200 | case OPTION_GP32: |
a325df1d | 11201 | file_mips_gp32 = 1; |
c97ef257 AH |
11202 | break; |
11203 | ||
11204 | case OPTION_GP64: | |
a325df1d | 11205 | file_mips_gp32 = 0; |
c97ef257 | 11206 | break; |
252b5132 | 11207 | |
ca4e0257 | 11208 | case OPTION_FP32: |
a325df1d | 11209 | file_mips_fp32 = 1; |
316f5878 RS |
11210 | break; |
11211 | ||
11212 | case OPTION_FP64: | |
11213 | file_mips_fp32 = 0; | |
ca4e0257 RS |
11214 | break; |
11215 | ||
ae948b86 | 11216 | #ifdef OBJ_ELF |
252b5132 | 11217 | case OPTION_MABI: |
34ba82a8 TS |
11218 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11219 | { | |
11220 | as_bad (_("-mabi is supported for ELF format only")); | |
11221 | return 0; | |
11222 | } | |
e013f690 | 11223 | if (strcmp (arg, "32") == 0) |
316f5878 | 11224 | mips_abi = O32_ABI; |
e013f690 | 11225 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 11226 | mips_abi = O64_ABI; |
e013f690 | 11227 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 11228 | mips_abi = N32_ABI; |
e013f690 TS |
11229 | else if (strcmp (arg, "64") == 0) |
11230 | { | |
316f5878 | 11231 | mips_abi = N64_ABI; |
e013f690 TS |
11232 | if (! support_64bit_objects()) |
11233 | as_fatal (_("No compiled in support for 64 bit object file " | |
11234 | "format")); | |
11235 | } | |
11236 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 11237 | mips_abi = EABI_ABI; |
e013f690 | 11238 | else |
da0e507f TS |
11239 | { |
11240 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
11241 | return 0; | |
11242 | } | |
252b5132 | 11243 | break; |
e013f690 | 11244 | #endif /* OBJ_ELF */ |
252b5132 | 11245 | |
6b76fefe | 11246 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 11247 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
11248 | break; |
11249 | ||
9ee72ff1 | 11250 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 11251 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
11252 | break; |
11253 | ||
ecb4347a DJ |
11254 | #ifdef OBJ_ELF |
11255 | case OPTION_MDEBUG: | |
b34976b6 | 11256 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
11257 | break; |
11258 | ||
11259 | case OPTION_NO_MDEBUG: | |
b34976b6 | 11260 | mips_flag_mdebug = FALSE; |
ecb4347a | 11261 | break; |
dcd410fe RO |
11262 | |
11263 | case OPTION_PDR: | |
11264 | mips_flag_pdr = TRUE; | |
11265 | break; | |
11266 | ||
11267 | case OPTION_NO_PDR: | |
11268 | mips_flag_pdr = FALSE; | |
11269 | break; | |
0a44bf69 RS |
11270 | |
11271 | case OPTION_MVXWORKS_PIC: | |
11272 | mips_pic = VXWORKS_PIC; | |
11273 | break; | |
ecb4347a DJ |
11274 | #endif /* OBJ_ELF */ |
11275 | ||
252b5132 RH |
11276 | default: |
11277 | return 0; | |
11278 | } | |
11279 | ||
11280 | return 1; | |
11281 | } | |
316f5878 RS |
11282 | \f |
11283 | /* Set up globals to generate code for the ISA or processor | |
11284 | described by INFO. */ | |
252b5132 | 11285 | |
252b5132 | 11286 | static void |
17a2f251 | 11287 | mips_set_architecture (const struct mips_cpu_info *info) |
252b5132 | 11288 | { |
316f5878 | 11289 | if (info != 0) |
252b5132 | 11290 | { |
fef14a42 TS |
11291 | file_mips_arch = info->cpu; |
11292 | mips_opts.arch = info->cpu; | |
316f5878 | 11293 | mips_opts.isa = info->isa; |
252b5132 | 11294 | } |
252b5132 RH |
11295 | } |
11296 | ||
252b5132 | 11297 | |
316f5878 | 11298 | /* Likewise for tuning. */ |
252b5132 | 11299 | |
316f5878 | 11300 | static void |
17a2f251 | 11301 | mips_set_tune (const struct mips_cpu_info *info) |
316f5878 RS |
11302 | { |
11303 | if (info != 0) | |
fef14a42 | 11304 | mips_tune = info->cpu; |
316f5878 | 11305 | } |
80cc45a5 | 11306 | |
34ba82a8 | 11307 | |
252b5132 | 11308 | void |
17a2f251 | 11309 | mips_after_parse_args (void) |
e9670677 | 11310 | { |
fef14a42 TS |
11311 | const struct mips_cpu_info *arch_info = 0; |
11312 | const struct mips_cpu_info *tune_info = 0; | |
11313 | ||
e9670677 | 11314 | /* GP relative stuff not working for PE */ |
6caf9ef4 | 11315 | if (strncmp (TARGET_OS, "pe", 2) == 0) |
e9670677 | 11316 | { |
6caf9ef4 | 11317 | if (g_switch_seen && g_switch_value != 0) |
e9670677 MR |
11318 | as_bad (_("-G not supported in this configuration.")); |
11319 | g_switch_value = 0; | |
11320 | } | |
11321 | ||
cac012d6 AO |
11322 | if (mips_abi == NO_ABI) |
11323 | mips_abi = MIPS_DEFAULT_ABI; | |
11324 | ||
22923709 RS |
11325 | /* The following code determines the architecture and register size. |
11326 | Similar code was added to GCC 3.3 (see override_options() in | |
11327 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
11328 | as much as possible. */ | |
e9670677 | 11329 | |
316f5878 | 11330 | if (mips_arch_string != 0) |
fef14a42 | 11331 | arch_info = mips_parse_cpu ("-march", mips_arch_string); |
e9670677 | 11332 | |
316f5878 | 11333 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 11334 | { |
316f5878 | 11335 | /* Handle -mipsN. At this point, file_mips_isa contains the |
fef14a42 | 11336 | ISA level specified by -mipsN, while arch_info->isa contains |
316f5878 | 11337 | the -march selection (if any). */ |
fef14a42 | 11338 | if (arch_info != 0) |
e9670677 | 11339 | { |
316f5878 RS |
11340 | /* -march takes precedence over -mipsN, since it is more descriptive. |
11341 | There's no harm in specifying both as long as the ISA levels | |
11342 | are the same. */ | |
fef14a42 | 11343 | if (file_mips_isa != arch_info->isa) |
316f5878 RS |
11344 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), |
11345 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
fef14a42 | 11346 | mips_cpu_info_from_isa (arch_info->isa)->name); |
e9670677 | 11347 | } |
316f5878 | 11348 | else |
fef14a42 | 11349 | arch_info = mips_cpu_info_from_isa (file_mips_isa); |
e9670677 MR |
11350 | } |
11351 | ||
fef14a42 TS |
11352 | if (arch_info == 0) |
11353 | arch_info = mips_parse_cpu ("default CPU", MIPS_CPU_STRING_DEFAULT); | |
e9670677 | 11354 | |
fef14a42 | 11355 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (arch_info->isa)) |
316f5878 | 11356 | as_bad ("-march=%s is not compatible with the selected ABI", |
fef14a42 TS |
11357 | arch_info->name); |
11358 | ||
11359 | mips_set_architecture (arch_info); | |
11360 | ||
11361 | /* Optimize for file_mips_arch, unless -mtune selects a different processor. */ | |
11362 | if (mips_tune_string != 0) | |
11363 | tune_info = mips_parse_cpu ("-mtune", mips_tune_string); | |
e9670677 | 11364 | |
fef14a42 TS |
11365 | if (tune_info == 0) |
11366 | mips_set_tune (arch_info); | |
11367 | else | |
11368 | mips_set_tune (tune_info); | |
e9670677 | 11369 | |
316f5878 | 11370 | if (file_mips_gp32 >= 0) |
e9670677 | 11371 | { |
316f5878 RS |
11372 | /* The user specified the size of the integer registers. Make sure |
11373 | it agrees with the ABI and ISA. */ | |
11374 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
11375 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
11376 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
11377 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
11378 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
11379 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
11380 | } |
11381 | else | |
11382 | { | |
316f5878 RS |
11383 | /* Infer the integer register size from the ABI and processor. |
11384 | Restrict ourselves to 32-bit registers if that's all the | |
11385 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
11386 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
11387 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
11388 | } |
11389 | ||
ad3fea08 TS |
11390 | switch (file_mips_fp32) |
11391 | { | |
11392 | default: | |
11393 | case -1: | |
11394 | /* No user specified float register size. | |
11395 | ??? GAS treats single-float processors as though they had 64-bit | |
11396 | float registers (although it complains when double-precision | |
11397 | instructions are used). As things stand, saying they have 32-bit | |
11398 | registers would lead to spurious "register must be even" messages. | |
11399 | So here we assume float registers are never smaller than the | |
11400 | integer ones. */ | |
11401 | if (file_mips_gp32 == 0) | |
11402 | /* 64-bit integer registers implies 64-bit float registers. */ | |
11403 | file_mips_fp32 = 0; | |
11404 | else if ((mips_opts.ase_mips3d > 0 || mips_opts.ase_mdmx > 0) | |
11405 | && ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
11406 | /* -mips3d and -mdmx imply 64-bit float registers, if possible. */ | |
11407 | file_mips_fp32 = 0; | |
11408 | else | |
11409 | /* 32-bit float registers. */ | |
11410 | file_mips_fp32 = 1; | |
11411 | break; | |
11412 | ||
11413 | /* The user specified the size of the float registers. Check if it | |
11414 | agrees with the ABI and ISA. */ | |
11415 | case 0: | |
11416 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
11417 | as_bad (_("-mfp64 used with a 32-bit fpu")); | |
11418 | else if (ABI_NEEDS_32BIT_REGS (mips_abi) | |
11419 | && !ISA_HAS_MXHC1 (mips_opts.isa)) | |
11420 | as_warn (_("-mfp64 used with a 32-bit ABI")); | |
11421 | break; | |
11422 | case 1: | |
11423 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
11424 | as_warn (_("-mfp32 used with a 64-bit ABI")); | |
11425 | break; | |
11426 | } | |
e9670677 | 11427 | |
316f5878 | 11428 | /* End of GCC-shared inference code. */ |
e9670677 | 11429 | |
17a2f251 TS |
11430 | /* This flag is set when we have a 64-bit capable CPU but use only |
11431 | 32-bit wide registers. Note that EABI does not use it. */ | |
11432 | if (ISA_HAS_64BIT_REGS (mips_opts.isa) | |
11433 | && ((mips_abi == NO_ABI && file_mips_gp32 == 1) | |
11434 | || mips_abi == O32_ABI)) | |
316f5878 | 11435 | mips_32bitmode = 1; |
e9670677 MR |
11436 | |
11437 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
11438 | as_bad (_("trap exception not supported at ISA 1")); | |
11439 | ||
e9670677 MR |
11440 | /* If the selected architecture includes support for ASEs, enable |
11441 | generation of code for them. */ | |
a4672219 | 11442 | if (mips_opts.mips16 == -1) |
fef14a42 | 11443 | mips_opts.mips16 = (CPU_HAS_MIPS16 (file_mips_arch)) ? 1 : 0; |
ffdefa66 | 11444 | if (mips_opts.ase_mips3d == -1) |
65263ce3 | 11445 | mips_opts.ase_mips3d = ((arch_info->flags & MIPS_CPU_ASE_MIPS3D) |
ad3fea08 TS |
11446 | && file_mips_fp32 == 0) ? 1 : 0; |
11447 | if (mips_opts.ase_mips3d && file_mips_fp32 == 1) | |
11448 | as_bad (_("-mfp32 used with -mips3d")); | |
11449 | ||
ffdefa66 | 11450 | if (mips_opts.ase_mdmx == -1) |
65263ce3 | 11451 | mips_opts.ase_mdmx = ((arch_info->flags & MIPS_CPU_ASE_MDMX) |
ad3fea08 TS |
11452 | && file_mips_fp32 == 0) ? 1 : 0; |
11453 | if (mips_opts.ase_mdmx && file_mips_fp32 == 1) | |
11454 | as_bad (_("-mfp32 used with -mdmx")); | |
11455 | ||
11456 | if (mips_opts.ase_smartmips == -1) | |
11457 | mips_opts.ase_smartmips = (arch_info->flags & MIPS_CPU_ASE_SMARTMIPS) ? 1 : 0; | |
11458 | if (mips_opts.ase_smartmips && !ISA_SUPPORTS_SMARTMIPS) | |
11459 | as_warn ("%s ISA does not support SmartMIPS", | |
11460 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
11461 | ||
74cd071d | 11462 | if (mips_opts.ase_dsp == -1) |
ad3fea08 TS |
11463 | mips_opts.ase_dsp = (arch_info->flags & MIPS_CPU_ASE_DSP) ? 1 : 0; |
11464 | if (mips_opts.ase_dsp && !ISA_SUPPORTS_DSP_ASE) | |
11465 | as_warn ("%s ISA does not support DSP ASE", | |
11466 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
11467 | ||
ef2e4d86 | 11468 | if (mips_opts.ase_mt == -1) |
ad3fea08 TS |
11469 | mips_opts.ase_mt = (arch_info->flags & MIPS_CPU_ASE_MT) ? 1 : 0; |
11470 | if (mips_opts.ase_mt && !ISA_SUPPORTS_MT_ASE) | |
11471 | as_warn ("%s ISA does not support MT ASE", | |
11472 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
e9670677 | 11473 | |
e9670677 | 11474 | file_mips_isa = mips_opts.isa; |
a4672219 | 11475 | file_ase_mips16 = mips_opts.mips16; |
e9670677 MR |
11476 | file_ase_mips3d = mips_opts.ase_mips3d; |
11477 | file_ase_mdmx = mips_opts.ase_mdmx; | |
e16bfa71 | 11478 | file_ase_smartmips = mips_opts.ase_smartmips; |
74cd071d | 11479 | file_ase_dsp = mips_opts.ase_dsp; |
ef2e4d86 | 11480 | file_ase_mt = mips_opts.ase_mt; |
e9670677 MR |
11481 | mips_opts.gp32 = file_mips_gp32; |
11482 | mips_opts.fp32 = file_mips_fp32; | |
11483 | ||
ecb4347a DJ |
11484 | if (mips_flag_mdebug < 0) |
11485 | { | |
11486 | #ifdef OBJ_MAYBE_ECOFF | |
11487 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
11488 | mips_flag_mdebug = 1; | |
11489 | else | |
11490 | #endif /* OBJ_MAYBE_ECOFF */ | |
11491 | mips_flag_mdebug = 0; | |
11492 | } | |
e9670677 MR |
11493 | } |
11494 | \f | |
11495 | void | |
17a2f251 | 11496 | mips_init_after_args (void) |
252b5132 RH |
11497 | { |
11498 | /* initialize opcodes */ | |
11499 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 11500 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
11501 | } |
11502 | ||
11503 | long | |
17a2f251 | 11504 | md_pcrel_from (fixS *fixP) |
252b5132 | 11505 | { |
a7ebbfdf TS |
11506 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; |
11507 | switch (fixP->fx_r_type) | |
11508 | { | |
11509 | case BFD_RELOC_16_PCREL_S2: | |
11510 | case BFD_RELOC_MIPS_JMP: | |
11511 | /* Return the address of the delay slot. */ | |
11512 | return addr + 4; | |
11513 | default: | |
11514 | return addr; | |
11515 | } | |
252b5132 RH |
11516 | } |
11517 | ||
252b5132 RH |
11518 | /* This is called before the symbol table is processed. In order to |
11519 | work with gcc when using mips-tfile, we must keep all local labels. | |
11520 | However, in other cases, we want to discard them. If we were | |
11521 | called with -g, but we didn't see any debugging information, it may | |
11522 | mean that gcc is smuggling debugging information through to | |
11523 | mips-tfile, in which case we must generate all local labels. */ | |
11524 | ||
11525 | void | |
17a2f251 | 11526 | mips_frob_file_before_adjust (void) |
252b5132 RH |
11527 | { |
11528 | #ifndef NO_ECOFF_DEBUGGING | |
11529 | if (ECOFF_DEBUGGING | |
11530 | && mips_debug != 0 | |
11531 | && ! ecoff_debugging_seen) | |
11532 | flag_keep_locals = 1; | |
11533 | #endif | |
11534 | } | |
11535 | ||
3b91255e | 11536 | /* Sort any unmatched HI16 and GOT16 relocs so that they immediately precede |
55cf6793 | 11537 | the corresponding LO16 reloc. This is called before md_apply_fix and |
3b91255e RS |
11538 | tc_gen_reloc. Unmatched relocs can only be generated by use of explicit |
11539 | relocation operators. | |
11540 | ||
11541 | For our purposes, a %lo() expression matches a %got() or %hi() | |
11542 | expression if: | |
11543 | ||
11544 | (a) it refers to the same symbol; and | |
11545 | (b) the offset applied in the %lo() expression is no lower than | |
11546 | the offset applied in the %got() or %hi(). | |
11547 | ||
11548 | (b) allows us to cope with code like: | |
11549 | ||
11550 | lui $4,%hi(foo) | |
11551 | lh $4,%lo(foo+2)($4) | |
11552 | ||
11553 | ...which is legal on RELA targets, and has a well-defined behaviour | |
11554 | if the user knows that adding 2 to "foo" will not induce a carry to | |
11555 | the high 16 bits. | |
11556 | ||
11557 | When several %lo()s match a particular %got() or %hi(), we use the | |
11558 | following rules to distinguish them: | |
11559 | ||
11560 | (1) %lo()s with smaller offsets are a better match than %lo()s with | |
11561 | higher offsets. | |
11562 | ||
11563 | (2) %lo()s with no matching %got() or %hi() are better than those | |
11564 | that already have a matching %got() or %hi(). | |
11565 | ||
11566 | (3) later %lo()s are better than earlier %lo()s. | |
11567 | ||
11568 | These rules are applied in order. | |
11569 | ||
11570 | (1) means, among other things, that %lo()s with identical offsets are | |
11571 | chosen if they exist. | |
11572 | ||
11573 | (2) means that we won't associate several high-part relocations with | |
11574 | the same low-part relocation unless there's no alternative. Having | |
11575 | several high parts for the same low part is a GNU extension; this rule | |
11576 | allows careful users to avoid it. | |
11577 | ||
11578 | (3) is purely cosmetic. mips_hi_fixup_list is is in reverse order, | |
11579 | with the last high-part relocation being at the front of the list. | |
11580 | It therefore makes sense to choose the last matching low-part | |
11581 | relocation, all other things being equal. It's also easier | |
11582 | to code that way. */ | |
252b5132 RH |
11583 | |
11584 | void | |
17a2f251 | 11585 | mips_frob_file (void) |
252b5132 RH |
11586 | { |
11587 | struct mips_hi_fixup *l; | |
11588 | ||
11589 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
11590 | { | |
11591 | segment_info_type *seginfo; | |
3b91255e RS |
11592 | bfd_boolean matched_lo_p; |
11593 | fixS **hi_pos, **lo_pos, **pos; | |
252b5132 | 11594 | |
5919d012 | 11595 | assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 11596 | |
5919d012 RS |
11597 | /* If a GOT16 relocation turns out to be against a global symbol, |
11598 | there isn't supposed to be a matching LO. */ | |
11599 | if (l->fixp->fx_r_type == BFD_RELOC_MIPS_GOT16 | |
11600 | && !pic_need_relax (l->fixp->fx_addsy, l->seg)) | |
11601 | continue; | |
11602 | ||
11603 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
11604 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
11605 | continue; |
11606 | ||
252b5132 | 11607 | seginfo = seg_info (l->seg); |
252b5132 | 11608 | |
3b91255e RS |
11609 | /* Set HI_POS to the position of this relocation in the chain. |
11610 | Set LO_POS to the position of the chosen low-part relocation. | |
11611 | MATCHED_LO_P is true on entry to the loop if *POS is a low-part | |
11612 | relocation that matches an immediately-preceding high-part | |
11613 | relocation. */ | |
11614 | hi_pos = NULL; | |
11615 | lo_pos = NULL; | |
11616 | matched_lo_p = FALSE; | |
11617 | for (pos = &seginfo->fix_root; *pos != NULL; pos = &(*pos)->fx_next) | |
11618 | { | |
11619 | if (*pos == l->fixp) | |
11620 | hi_pos = pos; | |
11621 | ||
704803a9 MR |
11622 | if (((*pos)->fx_r_type == BFD_RELOC_LO16 |
11623 | || (*pos)->fx_r_type == BFD_RELOC_MIPS16_LO16) | |
3b91255e RS |
11624 | && (*pos)->fx_addsy == l->fixp->fx_addsy |
11625 | && (*pos)->fx_offset >= l->fixp->fx_offset | |
11626 | && (lo_pos == NULL | |
11627 | || (*pos)->fx_offset < (*lo_pos)->fx_offset | |
11628 | || (!matched_lo_p | |
11629 | && (*pos)->fx_offset == (*lo_pos)->fx_offset))) | |
11630 | lo_pos = pos; | |
11631 | ||
11632 | matched_lo_p = (reloc_needs_lo_p ((*pos)->fx_r_type) | |
11633 | && fixup_has_matching_lo_p (*pos)); | |
11634 | } | |
11635 | ||
11636 | /* If we found a match, remove the high-part relocation from its | |
11637 | current position and insert it before the low-part relocation. | |
11638 | Make the offsets match so that fixup_has_matching_lo_p() | |
11639 | will return true. | |
11640 | ||
11641 | We don't warn about unmatched high-part relocations since some | |
11642 | versions of gcc have been known to emit dead "lui ...%hi(...)" | |
11643 | instructions. */ | |
11644 | if (lo_pos != NULL) | |
11645 | { | |
11646 | l->fixp->fx_offset = (*lo_pos)->fx_offset; | |
11647 | if (l->fixp->fx_next != *lo_pos) | |
252b5132 | 11648 | { |
3b91255e RS |
11649 | *hi_pos = l->fixp->fx_next; |
11650 | l->fixp->fx_next = *lo_pos; | |
11651 | *lo_pos = l->fixp; | |
252b5132 | 11652 | } |
252b5132 RH |
11653 | } |
11654 | } | |
11655 | } | |
11656 | ||
3e722fb5 | 11657 | /* We may have combined relocations without symbols in the N32/N64 ABI. |
f6688943 | 11658 | We have to prevent gas from dropping them. */ |
252b5132 | 11659 | |
252b5132 | 11660 | int |
17a2f251 | 11661 | mips_force_relocation (fixS *fixp) |
252b5132 | 11662 | { |
ae6063d4 | 11663 | if (generic_force_reloc (fixp)) |
252b5132 RH |
11664 | return 1; |
11665 | ||
f6688943 TS |
11666 | if (HAVE_NEWABI |
11667 | && S_GET_SEGMENT (fixp->fx_addsy) == bfd_abs_section_ptr | |
11668 | && (fixp->fx_r_type == BFD_RELOC_MIPS_SUB | |
11669 | || fixp->fx_r_type == BFD_RELOC_HI16_S | |
11670 | || fixp->fx_r_type == BFD_RELOC_LO16)) | |
11671 | return 1; | |
11672 | ||
3e722fb5 | 11673 | return 0; |
252b5132 RH |
11674 | } |
11675 | ||
11676 | /* Apply a fixup to the object file. */ | |
11677 | ||
94f592af | 11678 | void |
55cf6793 | 11679 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
252b5132 | 11680 | { |
874e8986 | 11681 | bfd_byte *buf; |
98aa84af | 11682 | long insn; |
a7ebbfdf | 11683 | reloc_howto_type *howto; |
252b5132 | 11684 | |
a7ebbfdf TS |
11685 | /* We ignore generic BFD relocations we don't know about. */ |
11686 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
11687 | if (! howto) | |
11688 | return; | |
65551fa4 | 11689 | |
252b5132 RH |
11690 | assert (fixP->fx_size == 4 |
11691 | || fixP->fx_r_type == BFD_RELOC_16 | |
11692 | || fixP->fx_r_type == BFD_RELOC_64 | |
f6688943 TS |
11693 | || fixP->fx_r_type == BFD_RELOC_CTOR |
11694 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
252b5132 | 11695 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
a7ebbfdf | 11696 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY); |
252b5132 | 11697 | |
a7ebbfdf | 11698 | buf = (bfd_byte *) (fixP->fx_frag->fr_literal + fixP->fx_where); |
252b5132 | 11699 | |
3994f87e | 11700 | assert (!fixP->fx_pcrel || fixP->fx_r_type == BFD_RELOC_16_PCREL_S2); |
b1dca8ee RS |
11701 | |
11702 | /* Don't treat parts of a composite relocation as done. There are two | |
11703 | reasons for this: | |
11704 | ||
11705 | (1) The second and third parts will be against 0 (RSS_UNDEF) but | |
11706 | should nevertheless be emitted if the first part is. | |
11707 | ||
11708 | (2) In normal usage, composite relocations are never assembly-time | |
11709 | constants. The easiest way of dealing with the pathological | |
11710 | exceptions is to generate a relocation against STN_UNDEF and | |
11711 | leave everything up to the linker. */ | |
3994f87e | 11712 | if (fixP->fx_addsy == NULL && !fixP->fx_pcrel && fixP->fx_tcbit == 0) |
252b5132 RH |
11713 | fixP->fx_done = 1; |
11714 | ||
11715 | switch (fixP->fx_r_type) | |
11716 | { | |
3f98094e DJ |
11717 | case BFD_RELOC_MIPS_TLS_GD: |
11718 | case BFD_RELOC_MIPS_TLS_LDM: | |
11719 | case BFD_RELOC_MIPS_TLS_DTPREL_HI16: | |
11720 | case BFD_RELOC_MIPS_TLS_DTPREL_LO16: | |
11721 | case BFD_RELOC_MIPS_TLS_GOTTPREL: | |
11722 | case BFD_RELOC_MIPS_TLS_TPREL_HI16: | |
11723 | case BFD_RELOC_MIPS_TLS_TPREL_LO16: | |
11724 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
11725 | /* fall through */ | |
11726 | ||
252b5132 | 11727 | case BFD_RELOC_MIPS_JMP: |
e369bcce TS |
11728 | case BFD_RELOC_MIPS_SHIFT5: |
11729 | case BFD_RELOC_MIPS_SHIFT6: | |
11730 | case BFD_RELOC_MIPS_GOT_DISP: | |
11731 | case BFD_RELOC_MIPS_GOT_PAGE: | |
11732 | case BFD_RELOC_MIPS_GOT_OFST: | |
11733 | case BFD_RELOC_MIPS_SUB: | |
11734 | case BFD_RELOC_MIPS_INSERT_A: | |
11735 | case BFD_RELOC_MIPS_INSERT_B: | |
11736 | case BFD_RELOC_MIPS_DELETE: | |
11737 | case BFD_RELOC_MIPS_HIGHEST: | |
11738 | case BFD_RELOC_MIPS_HIGHER: | |
11739 | case BFD_RELOC_MIPS_SCN_DISP: | |
11740 | case BFD_RELOC_MIPS_REL16: | |
11741 | case BFD_RELOC_MIPS_RELGOT: | |
11742 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
11743 | case BFD_RELOC_HI16: |
11744 | case BFD_RELOC_HI16_S: | |
cdf6fd85 | 11745 | case BFD_RELOC_GPREL16: |
252b5132 RH |
11746 | case BFD_RELOC_MIPS_LITERAL: |
11747 | case BFD_RELOC_MIPS_CALL16: | |
11748 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 11749 | case BFD_RELOC_GPREL32: |
252b5132 RH |
11750 | case BFD_RELOC_MIPS_GOT_HI16: |
11751 | case BFD_RELOC_MIPS_GOT_LO16: | |
11752 | case BFD_RELOC_MIPS_CALL_HI16: | |
11753 | case BFD_RELOC_MIPS_CALL_LO16: | |
11754 | case BFD_RELOC_MIPS16_GPREL: | |
d6f16593 MR |
11755 | case BFD_RELOC_MIPS16_HI16: |
11756 | case BFD_RELOC_MIPS16_HI16_S: | |
252b5132 RH |
11757 | /* Nothing needed to do. The value comes from the reloc entry */ |
11758 | break; | |
11759 | ||
11760 | case BFD_RELOC_MIPS16_JMP: | |
11761 | /* We currently always generate a reloc against a symbol, which | |
11762 | means that we don't want an addend even if the symbol is | |
11763 | defined. */ | |
a7ebbfdf | 11764 | *valP = 0; |
252b5132 RH |
11765 | break; |
11766 | ||
252b5132 RH |
11767 | case BFD_RELOC_64: |
11768 | /* This is handled like BFD_RELOC_32, but we output a sign | |
11769 | extended value if we are only 32 bits. */ | |
3e722fb5 | 11770 | if (fixP->fx_done) |
252b5132 RH |
11771 | { |
11772 | if (8 <= sizeof (valueT)) | |
2132e3a3 | 11773 | md_number_to_chars ((char *) buf, *valP, 8); |
252b5132 RH |
11774 | else |
11775 | { | |
a7ebbfdf | 11776 | valueT hiv; |
252b5132 | 11777 | |
a7ebbfdf | 11778 | if ((*valP & 0x80000000) != 0) |
252b5132 RH |
11779 | hiv = 0xffffffff; |
11780 | else | |
11781 | hiv = 0; | |
b215186b | 11782 | md_number_to_chars ((char *)(buf + (target_big_endian ? 4 : 0)), |
a7ebbfdf | 11783 | *valP, 4); |
b215186b | 11784 | md_number_to_chars ((char *)(buf + (target_big_endian ? 0 : 4)), |
a7ebbfdf | 11785 | hiv, 4); |
252b5132 RH |
11786 | } |
11787 | } | |
11788 | break; | |
11789 | ||
056350c6 | 11790 | case BFD_RELOC_RVA: |
252b5132 RH |
11791 | case BFD_RELOC_32: |
11792 | /* If we are deleting this reloc entry, we must fill in the | |
11793 | value now. This can happen if we have a .word which is not | |
3e722fb5 CD |
11794 | resolved when it appears but is later defined. */ |
11795 | if (fixP->fx_done) | |
2132e3a3 | 11796 | md_number_to_chars ((char *) buf, *valP, 4); |
252b5132 RH |
11797 | break; |
11798 | ||
11799 | case BFD_RELOC_16: | |
11800 | /* If we are deleting this reloc entry, we must fill in the | |
11801 | value now. */ | |
252b5132 | 11802 | if (fixP->fx_done) |
2132e3a3 | 11803 | md_number_to_chars ((char *) buf, *valP, 2); |
252b5132 RH |
11804 | break; |
11805 | ||
11806 | case BFD_RELOC_LO16: | |
d6f16593 | 11807 | case BFD_RELOC_MIPS16_LO16: |
3e722fb5 CD |
11808 | /* FIXME: Now that embedded-PIC is gone, some of this code/comment |
11809 | may be safe to remove, but if so it's not obvious. */ | |
252b5132 RH |
11810 | /* When handling an embedded PIC switch statement, we can wind |
11811 | up deleting a LO16 reloc. See the 'o' case in mips_ip. */ | |
11812 | if (fixP->fx_done) | |
11813 | { | |
a7ebbfdf | 11814 | if (*valP + 0x8000 > 0xffff) |
252b5132 RH |
11815 | as_bad_where (fixP->fx_file, fixP->fx_line, |
11816 | _("relocation overflow")); | |
252b5132 RH |
11817 | if (target_big_endian) |
11818 | buf += 2; | |
2132e3a3 | 11819 | md_number_to_chars ((char *) buf, *valP, 2); |
252b5132 RH |
11820 | } |
11821 | break; | |
11822 | ||
11823 | case BFD_RELOC_16_PCREL_S2: | |
a7ebbfdf | 11824 | if ((*valP & 0x3) != 0) |
cb56d3d3 | 11825 | as_bad_where (fixP->fx_file, fixP->fx_line, |
bad36eac | 11826 | _("Branch to misaligned address (%lx)"), (long) *valP); |
cb56d3d3 | 11827 | |
252b5132 RH |
11828 | /* |
11829 | * We need to save the bits in the instruction since fixup_segment() | |
11830 | * might be deleting the relocation entry (i.e., a branch within | |
11831 | * the current segment). | |
11832 | */ | |
a7ebbfdf | 11833 | if (! fixP->fx_done) |
bb2d6cd7 | 11834 | break; |
252b5132 RH |
11835 | |
11836 | /* update old instruction data */ | |
252b5132 RH |
11837 | if (target_big_endian) |
11838 | insn = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
11839 | else | |
11840 | insn = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | |
11841 | ||
a7ebbfdf TS |
11842 | if (*valP + 0x20000 <= 0x3ffff) |
11843 | { | |
11844 | insn |= (*valP >> 2) & 0xffff; | |
2132e3a3 | 11845 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
11846 | } |
11847 | else if (mips_pic == NO_PIC | |
11848 | && fixP->fx_done | |
11849 | && fixP->fx_frag->fr_address >= text_section->vma | |
11850 | && (fixP->fx_frag->fr_address | |
587aac4e | 11851 | < text_section->vma + bfd_get_section_size (text_section)) |
a7ebbfdf TS |
11852 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ |
11853 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
11854 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
252b5132 RH |
11855 | { |
11856 | /* The branch offset is too large. If this is an | |
11857 | unconditional branch, and we are not generating PIC code, | |
11858 | we can convert it to an absolute jump instruction. */ | |
a7ebbfdf TS |
11859 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ |
11860 | insn = 0x0c000000; /* jal */ | |
252b5132 | 11861 | else |
a7ebbfdf TS |
11862 | insn = 0x08000000; /* j */ |
11863 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
11864 | fixP->fx_done = 0; | |
11865 | fixP->fx_addsy = section_symbol (text_section); | |
11866 | *valP += md_pcrel_from (fixP); | |
2132e3a3 | 11867 | md_number_to_chars ((char *) buf, insn, 4); |
a7ebbfdf TS |
11868 | } |
11869 | else | |
11870 | { | |
11871 | /* If we got here, we have branch-relaxation disabled, | |
11872 | and there's nothing we can do to fix this instruction | |
11873 | without turning it into a longer sequence. */ | |
11874 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
11875 | _("Branch out of range")); | |
252b5132 | 11876 | } |
252b5132 RH |
11877 | break; |
11878 | ||
11879 | case BFD_RELOC_VTABLE_INHERIT: | |
11880 | fixP->fx_done = 0; | |
11881 | if (fixP->fx_addsy | |
11882 | && !S_IS_DEFINED (fixP->fx_addsy) | |
11883 | && !S_IS_WEAK (fixP->fx_addsy)) | |
11884 | S_SET_WEAK (fixP->fx_addsy); | |
11885 | break; | |
11886 | ||
11887 | case BFD_RELOC_VTABLE_ENTRY: | |
11888 | fixP->fx_done = 0; | |
11889 | break; | |
11890 | ||
11891 | default: | |
11892 | internalError (); | |
11893 | } | |
a7ebbfdf TS |
11894 | |
11895 | /* Remember value for tc_gen_reloc. */ | |
11896 | fixP->fx_addnumber = *valP; | |
252b5132 RH |
11897 | } |
11898 | ||
252b5132 | 11899 | static symbolS * |
17a2f251 | 11900 | get_symbol (void) |
252b5132 RH |
11901 | { |
11902 | int c; | |
11903 | char *name; | |
11904 | symbolS *p; | |
11905 | ||
11906 | name = input_line_pointer; | |
11907 | c = get_symbol_end (); | |
11908 | p = (symbolS *) symbol_find_or_make (name); | |
11909 | *input_line_pointer = c; | |
11910 | return p; | |
11911 | } | |
11912 | ||
11913 | /* Align the current frag to a given power of two. The MIPS assembler | |
11914 | also automatically adjusts any preceding label. */ | |
11915 | ||
11916 | static void | |
17a2f251 | 11917 | mips_align (int to, int fill, symbolS *label) |
252b5132 | 11918 | { |
7d10b47d | 11919 | mips_emit_delays (); |
252b5132 RH |
11920 | frag_align (to, fill, 0); |
11921 | record_alignment (now_seg, to); | |
11922 | if (label != NULL) | |
11923 | { | |
11924 | assert (S_GET_SEGMENT (label) == now_seg); | |
49309057 | 11925 | symbol_set_frag (label, frag_now); |
252b5132 RH |
11926 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
11927 | } | |
11928 | } | |
11929 | ||
11930 | /* Align to a given power of two. .align 0 turns off the automatic | |
11931 | alignment used by the data creating pseudo-ops. */ | |
11932 | ||
11933 | static void | |
17a2f251 | 11934 | s_align (int x ATTRIBUTE_UNUSED) |
252b5132 | 11935 | { |
3994f87e TS |
11936 | int temp; |
11937 | long temp_fill; | |
252b5132 RH |
11938 | long max_alignment = 15; |
11939 | ||
11940 | /* | |
11941 | ||
67c1ffbe | 11942 | o Note that the assembler pulls down any immediately preceding label |
252b5132 RH |
11943 | to the aligned address. |
11944 | o It's not documented but auto alignment is reinstated by | |
11945 | a .align pseudo instruction. | |
11946 | o Note also that after auto alignment is turned off the mips assembler | |
11947 | issues an error on attempt to assemble an improperly aligned data item. | |
11948 | We don't. | |
11949 | ||
11950 | */ | |
11951 | ||
11952 | temp = get_absolute_expression (); | |
11953 | if (temp > max_alignment) | |
11954 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
11955 | else if (temp < 0) | |
11956 | { | |
11957 | as_warn (_("Alignment negative: 0 assumed.")); | |
11958 | temp = 0; | |
11959 | } | |
11960 | if (*input_line_pointer == ',') | |
11961 | { | |
f9419b05 | 11962 | ++input_line_pointer; |
252b5132 RH |
11963 | temp_fill = get_absolute_expression (); |
11964 | } | |
11965 | else | |
11966 | temp_fill = 0; | |
11967 | if (temp) | |
11968 | { | |
11969 | auto_align = 1; | |
11970 | mips_align (temp, (int) temp_fill, | |
11971 | insn_labels != NULL ? insn_labels->label : NULL); | |
11972 | } | |
11973 | else | |
11974 | { | |
11975 | auto_align = 0; | |
11976 | } | |
11977 | ||
11978 | demand_empty_rest_of_line (); | |
11979 | } | |
11980 | ||
252b5132 | 11981 | static void |
17a2f251 | 11982 | s_change_sec (int sec) |
252b5132 RH |
11983 | { |
11984 | segT seg; | |
11985 | ||
252b5132 RH |
11986 | #ifdef OBJ_ELF |
11987 | /* The ELF backend needs to know that we are changing sections, so | |
11988 | that .previous works correctly. We could do something like check | |
b6ff326e | 11989 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
11990 | as it would not be appropriate to use it in the section changing |
11991 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
11992 | This should be cleaner, somehow. */ | |
11993 | obj_elf_section_change_hook (); | |
11994 | #endif | |
11995 | ||
7d10b47d | 11996 | mips_emit_delays (); |
252b5132 RH |
11997 | switch (sec) |
11998 | { | |
11999 | case 't': | |
12000 | s_text (0); | |
12001 | break; | |
12002 | case 'd': | |
12003 | s_data (0); | |
12004 | break; | |
12005 | case 'b': | |
12006 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
12007 | demand_empty_rest_of_line (); | |
12008 | break; | |
12009 | ||
12010 | case 'r': | |
4d0d148d TS |
12011 | seg = subseg_new (RDATA_SECTION_NAME, |
12012 | (subsegT) get_absolute_expression ()); | |
12013 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
252b5132 | 12014 | { |
4d0d148d TS |
12015 | bfd_set_section_flags (stdoutput, seg, (SEC_ALLOC | SEC_LOAD |
12016 | | SEC_READONLY | SEC_RELOC | |
12017 | | SEC_DATA)); | |
12018 | if (strcmp (TARGET_OS, "elf") != 0) | |
12019 | record_alignment (seg, 4); | |
252b5132 | 12020 | } |
4d0d148d | 12021 | demand_empty_rest_of_line (); |
252b5132 RH |
12022 | break; |
12023 | ||
12024 | case 's': | |
4d0d148d TS |
12025 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); |
12026 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
252b5132 | 12027 | { |
4d0d148d TS |
12028 | bfd_set_section_flags (stdoutput, seg, |
12029 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA); | |
12030 | if (strcmp (TARGET_OS, "elf") != 0) | |
12031 | record_alignment (seg, 4); | |
252b5132 | 12032 | } |
4d0d148d TS |
12033 | demand_empty_rest_of_line (); |
12034 | break; | |
252b5132 RH |
12035 | } |
12036 | ||
12037 | auto_align = 1; | |
12038 | } | |
b34976b6 | 12039 | |
cca86cc8 | 12040 | void |
17a2f251 | 12041 | s_change_section (int ignore ATTRIBUTE_UNUSED) |
cca86cc8 | 12042 | { |
7ed4a06a | 12043 | #ifdef OBJ_ELF |
cca86cc8 SC |
12044 | char *section_name; |
12045 | char c; | |
684022ea | 12046 | char next_c = 0; |
cca86cc8 SC |
12047 | int section_type; |
12048 | int section_flag; | |
12049 | int section_entry_size; | |
12050 | int section_alignment; | |
b34976b6 | 12051 | |
7ed4a06a TS |
12052 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
12053 | return; | |
12054 | ||
cca86cc8 SC |
12055 | section_name = input_line_pointer; |
12056 | c = get_symbol_end (); | |
a816d1ed AO |
12057 | if (c) |
12058 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 12059 | |
4cf0dd0d TS |
12060 | /* Do we have .section Name<,"flags">? */ |
12061 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 12062 | { |
4cf0dd0d TS |
12063 | /* just after name is now '\0'. */ |
12064 | *input_line_pointer = c; | |
cca86cc8 SC |
12065 | input_line_pointer = section_name; |
12066 | obj_elf_section (ignore); | |
12067 | return; | |
12068 | } | |
12069 | input_line_pointer++; | |
12070 | ||
12071 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
12072 | if (c == ',') | |
12073 | section_type = get_absolute_expression (); | |
12074 | else | |
12075 | section_type = 0; | |
12076 | if (*input_line_pointer++ == ',') | |
12077 | section_flag = get_absolute_expression (); | |
12078 | else | |
12079 | section_flag = 0; | |
12080 | if (*input_line_pointer++ == ',') | |
12081 | section_entry_size = get_absolute_expression (); | |
12082 | else | |
12083 | section_entry_size = 0; | |
12084 | if (*input_line_pointer++ == ',') | |
12085 | section_alignment = get_absolute_expression (); | |
12086 | else | |
12087 | section_alignment = 0; | |
12088 | ||
a816d1ed AO |
12089 | section_name = xstrdup (section_name); |
12090 | ||
8ab8a5c8 RS |
12091 | /* When using the generic form of .section (as implemented by obj-elf.c), |
12092 | there's no way to set the section type to SHT_MIPS_DWARF. Users have | |
12093 | traditionally had to fall back on the more common @progbits instead. | |
12094 | ||
12095 | There's nothing really harmful in this, since bfd will correct | |
12096 | SHT_PROGBITS to SHT_MIPS_DWARF before writing out the file. But it | |
708587a4 | 12097 | means that, for backwards compatibility, the special_section entries |
8ab8a5c8 RS |
12098 | for dwarf sections must use SHT_PROGBITS rather than SHT_MIPS_DWARF. |
12099 | ||
12100 | Even so, we shouldn't force users of the MIPS .section syntax to | |
12101 | incorrectly label the sections as SHT_PROGBITS. The best compromise | |
12102 | seems to be to map SHT_MIPS_DWARF to SHT_PROGBITS before calling the | |
12103 | generic type-checking code. */ | |
12104 | if (section_type == SHT_MIPS_DWARF) | |
12105 | section_type = SHT_PROGBITS; | |
12106 | ||
cca86cc8 SC |
12107 | obj_elf_change_section (section_name, section_type, section_flag, |
12108 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
12109 | |
12110 | if (now_seg->name != section_name) | |
12111 | free (section_name); | |
7ed4a06a | 12112 | #endif /* OBJ_ELF */ |
cca86cc8 | 12113 | } |
252b5132 RH |
12114 | |
12115 | void | |
17a2f251 | 12116 | mips_enable_auto_align (void) |
252b5132 RH |
12117 | { |
12118 | auto_align = 1; | |
12119 | } | |
12120 | ||
12121 | static void | |
17a2f251 | 12122 | s_cons (int log_size) |
252b5132 RH |
12123 | { |
12124 | symbolS *label; | |
12125 | ||
12126 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
7d10b47d | 12127 | mips_emit_delays (); |
252b5132 RH |
12128 | if (log_size > 0 && auto_align) |
12129 | mips_align (log_size, 0, label); | |
12130 | mips_clear_insn_labels (); | |
12131 | cons (1 << log_size); | |
12132 | } | |
12133 | ||
12134 | static void | |
17a2f251 | 12135 | s_float_cons (int type) |
252b5132 RH |
12136 | { |
12137 | symbolS *label; | |
12138 | ||
12139 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
12140 | ||
7d10b47d | 12141 | mips_emit_delays (); |
252b5132 RH |
12142 | |
12143 | if (auto_align) | |
49309057 ILT |
12144 | { |
12145 | if (type == 'd') | |
12146 | mips_align (3, 0, label); | |
12147 | else | |
12148 | mips_align (2, 0, label); | |
12149 | } | |
252b5132 RH |
12150 | |
12151 | mips_clear_insn_labels (); | |
12152 | ||
12153 | float_cons (type); | |
12154 | } | |
12155 | ||
12156 | /* Handle .globl. We need to override it because on Irix 5 you are | |
12157 | permitted to say | |
12158 | .globl foo .text | |
12159 | where foo is an undefined symbol, to mean that foo should be | |
12160 | considered to be the address of a function. */ | |
12161 | ||
12162 | static void | |
17a2f251 | 12163 | s_mips_globl (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12164 | { |
12165 | char *name; | |
12166 | int c; | |
12167 | symbolS *symbolP; | |
12168 | flagword flag; | |
12169 | ||
8a06b769 | 12170 | do |
252b5132 | 12171 | { |
8a06b769 | 12172 | name = input_line_pointer; |
252b5132 | 12173 | c = get_symbol_end (); |
8a06b769 TS |
12174 | symbolP = symbol_find_or_make (name); |
12175 | S_SET_EXTERNAL (symbolP); | |
12176 | ||
252b5132 | 12177 | *input_line_pointer = c; |
8a06b769 | 12178 | SKIP_WHITESPACE (); |
252b5132 | 12179 | |
8a06b769 TS |
12180 | /* On Irix 5, every global symbol that is not explicitly labelled as |
12181 | being a function is apparently labelled as being an object. */ | |
12182 | flag = BSF_OBJECT; | |
252b5132 | 12183 | |
8a06b769 TS |
12184 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
12185 | && (*input_line_pointer != ',')) | |
12186 | { | |
12187 | char *secname; | |
12188 | asection *sec; | |
12189 | ||
12190 | secname = input_line_pointer; | |
12191 | c = get_symbol_end (); | |
12192 | sec = bfd_get_section_by_name (stdoutput, secname); | |
12193 | if (sec == NULL) | |
12194 | as_bad (_("%s: no such section"), secname); | |
12195 | *input_line_pointer = c; | |
12196 | ||
12197 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
12198 | flag = BSF_FUNCTION; | |
12199 | } | |
12200 | ||
12201 | symbol_get_bfdsym (symbolP)->flags |= flag; | |
12202 | ||
12203 | c = *input_line_pointer; | |
12204 | if (c == ',') | |
12205 | { | |
12206 | input_line_pointer++; | |
12207 | SKIP_WHITESPACE (); | |
12208 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
12209 | c = '\n'; | |
12210 | } | |
12211 | } | |
12212 | while (c == ','); | |
252b5132 | 12213 | |
252b5132 RH |
12214 | demand_empty_rest_of_line (); |
12215 | } | |
12216 | ||
12217 | static void | |
17a2f251 | 12218 | s_option (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12219 | { |
12220 | char *opt; | |
12221 | char c; | |
12222 | ||
12223 | opt = input_line_pointer; | |
12224 | c = get_symbol_end (); | |
12225 | ||
12226 | if (*opt == 'O') | |
12227 | { | |
12228 | /* FIXME: What does this mean? */ | |
12229 | } | |
12230 | else if (strncmp (opt, "pic", 3) == 0) | |
12231 | { | |
12232 | int i; | |
12233 | ||
12234 | i = atoi (opt + 3); | |
12235 | if (i == 0) | |
12236 | mips_pic = NO_PIC; | |
12237 | else if (i == 2) | |
143d77c5 | 12238 | { |
252b5132 | 12239 | mips_pic = SVR4_PIC; |
143d77c5 EC |
12240 | mips_abicalls = TRUE; |
12241 | } | |
252b5132 RH |
12242 | else |
12243 | as_bad (_(".option pic%d not supported"), i); | |
12244 | ||
4d0d148d | 12245 | if (mips_pic == SVR4_PIC) |
252b5132 RH |
12246 | { |
12247 | if (g_switch_seen && g_switch_value != 0) | |
12248 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
12249 | g_switch_value = 0; | |
12250 | bfd_set_gp_size (stdoutput, 0); | |
12251 | } | |
12252 | } | |
12253 | else | |
12254 | as_warn (_("Unrecognized option \"%s\""), opt); | |
12255 | ||
12256 | *input_line_pointer = c; | |
12257 | demand_empty_rest_of_line (); | |
12258 | } | |
12259 | ||
12260 | /* This structure is used to hold a stack of .set values. */ | |
12261 | ||
e972090a NC |
12262 | struct mips_option_stack |
12263 | { | |
252b5132 RH |
12264 | struct mips_option_stack *next; |
12265 | struct mips_set_options options; | |
12266 | }; | |
12267 | ||
12268 | static struct mips_option_stack *mips_opts_stack; | |
12269 | ||
12270 | /* Handle the .set pseudo-op. */ | |
12271 | ||
12272 | static void | |
17a2f251 | 12273 | s_mipsset (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
12274 | { |
12275 | char *name = input_line_pointer, ch; | |
12276 | ||
12277 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 12278 | ++input_line_pointer; |
252b5132 RH |
12279 | ch = *input_line_pointer; |
12280 | *input_line_pointer = '\0'; | |
12281 | ||
12282 | if (strcmp (name, "reorder") == 0) | |
12283 | { | |
7d10b47d RS |
12284 | if (mips_opts.noreorder) |
12285 | end_noreorder (); | |
252b5132 RH |
12286 | } |
12287 | else if (strcmp (name, "noreorder") == 0) | |
12288 | { | |
7d10b47d RS |
12289 | if (!mips_opts.noreorder) |
12290 | start_noreorder (); | |
252b5132 RH |
12291 | } |
12292 | else if (strcmp (name, "at") == 0) | |
12293 | { | |
12294 | mips_opts.noat = 0; | |
12295 | } | |
12296 | else if (strcmp (name, "noat") == 0) | |
12297 | { | |
12298 | mips_opts.noat = 1; | |
12299 | } | |
12300 | else if (strcmp (name, "macro") == 0) | |
12301 | { | |
12302 | mips_opts.warn_about_macros = 0; | |
12303 | } | |
12304 | else if (strcmp (name, "nomacro") == 0) | |
12305 | { | |
12306 | if (mips_opts.noreorder == 0) | |
12307 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
12308 | mips_opts.warn_about_macros = 1; | |
12309 | } | |
12310 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
12311 | { | |
12312 | mips_opts.nomove = 0; | |
12313 | } | |
12314 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
12315 | { | |
12316 | mips_opts.nomove = 1; | |
12317 | } | |
12318 | else if (strcmp (name, "bopt") == 0) | |
12319 | { | |
12320 | mips_opts.nobopt = 0; | |
12321 | } | |
12322 | else if (strcmp (name, "nobopt") == 0) | |
12323 | { | |
12324 | mips_opts.nobopt = 1; | |
12325 | } | |
ad3fea08 TS |
12326 | else if (strcmp (name, "gp=default") == 0) |
12327 | mips_opts.gp32 = file_mips_gp32; | |
12328 | else if (strcmp (name, "gp=32") == 0) | |
12329 | mips_opts.gp32 = 1; | |
12330 | else if (strcmp (name, "gp=64") == 0) | |
12331 | { | |
12332 | if (!ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
12333 | as_warn ("%s isa does not support 64-bit registers", | |
12334 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12335 | mips_opts.gp32 = 0; | |
12336 | } | |
12337 | else if (strcmp (name, "fp=default") == 0) | |
12338 | mips_opts.fp32 = file_mips_fp32; | |
12339 | else if (strcmp (name, "fp=32") == 0) | |
12340 | mips_opts.fp32 = 1; | |
12341 | else if (strcmp (name, "fp=64") == 0) | |
12342 | { | |
12343 | if (!ISA_HAS_64BIT_FPRS (mips_opts.isa)) | |
12344 | as_warn ("%s isa does not support 64-bit floating point registers", | |
12345 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12346 | mips_opts.fp32 = 0; | |
12347 | } | |
252b5132 RH |
12348 | else if (strcmp (name, "mips16") == 0 |
12349 | || strcmp (name, "MIPS-16") == 0) | |
12350 | mips_opts.mips16 = 1; | |
12351 | else if (strcmp (name, "nomips16") == 0 | |
12352 | || strcmp (name, "noMIPS-16") == 0) | |
12353 | mips_opts.mips16 = 0; | |
e16bfa71 TS |
12354 | else if (strcmp (name, "smartmips") == 0) |
12355 | { | |
ad3fea08 | 12356 | if (!ISA_SUPPORTS_SMARTMIPS) |
e16bfa71 TS |
12357 | as_warn ("%s ISA does not support SmartMIPS ASE", |
12358 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12359 | mips_opts.ase_smartmips = 1; | |
12360 | } | |
12361 | else if (strcmp (name, "nosmartmips") == 0) | |
12362 | mips_opts.ase_smartmips = 0; | |
1f25f5d3 CD |
12363 | else if (strcmp (name, "mips3d") == 0) |
12364 | mips_opts.ase_mips3d = 1; | |
12365 | else if (strcmp (name, "nomips3d") == 0) | |
12366 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
12367 | else if (strcmp (name, "mdmx") == 0) |
12368 | mips_opts.ase_mdmx = 1; | |
12369 | else if (strcmp (name, "nomdmx") == 0) | |
12370 | mips_opts.ase_mdmx = 0; | |
74cd071d | 12371 | else if (strcmp (name, "dsp") == 0) |
ad3fea08 TS |
12372 | { |
12373 | if (!ISA_SUPPORTS_DSP_ASE) | |
12374 | as_warn ("%s ISA does not support DSP ASE", | |
12375 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12376 | mips_opts.ase_dsp = 1; | |
12377 | } | |
74cd071d CF |
12378 | else if (strcmp (name, "nodsp") == 0) |
12379 | mips_opts.ase_dsp = 0; | |
ef2e4d86 | 12380 | else if (strcmp (name, "mt") == 0) |
ad3fea08 TS |
12381 | { |
12382 | if (!ISA_SUPPORTS_MT_ASE) | |
12383 | as_warn ("%s ISA does not support MT ASE", | |
12384 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
12385 | mips_opts.ase_mt = 1; | |
12386 | } | |
ef2e4d86 CF |
12387 | else if (strcmp (name, "nomt") == 0) |
12388 | mips_opts.ase_mt = 0; | |
1a2c1fad | 12389 | else if (strncmp (name, "mips", 4) == 0 || strncmp (name, "arch=", 5) == 0) |
252b5132 | 12390 | { |
af7ee8bf | 12391 | int reset = 0; |
252b5132 | 12392 | |
1a2c1fad CD |
12393 | /* Permit the user to change the ISA and architecture on the fly. |
12394 | Needless to say, misuse can cause serious problems. */ | |
81a21e38 | 12395 | if (strcmp (name, "mips0") == 0 || strcmp (name, "arch=default") == 0) |
af7ee8bf CD |
12396 | { |
12397 | reset = 1; | |
12398 | mips_opts.isa = file_mips_isa; | |
1a2c1fad | 12399 | mips_opts.arch = file_mips_arch; |
1a2c1fad CD |
12400 | } |
12401 | else if (strncmp (name, "arch=", 5) == 0) | |
12402 | { | |
12403 | const struct mips_cpu_info *p; | |
12404 | ||
12405 | p = mips_parse_cpu("internal use", name + 5); | |
12406 | if (!p) | |
12407 | as_bad (_("unknown architecture %s"), name + 5); | |
12408 | else | |
12409 | { | |
12410 | mips_opts.arch = p->cpu; | |
12411 | mips_opts.isa = p->isa; | |
12412 | } | |
12413 | } | |
81a21e38 TS |
12414 | else if (strncmp (name, "mips", 4) == 0) |
12415 | { | |
12416 | const struct mips_cpu_info *p; | |
12417 | ||
12418 | p = mips_parse_cpu("internal use", name); | |
12419 | if (!p) | |
12420 | as_bad (_("unknown ISA level %s"), name + 4); | |
12421 | else | |
12422 | { | |
12423 | mips_opts.arch = p->cpu; | |
12424 | mips_opts.isa = p->isa; | |
12425 | } | |
12426 | } | |
af7ee8bf | 12427 | else |
81a21e38 | 12428 | as_bad (_("unknown ISA or architecture %s"), name); |
af7ee8bf CD |
12429 | |
12430 | switch (mips_opts.isa) | |
98d3f06f KH |
12431 | { |
12432 | case 0: | |
98d3f06f | 12433 | break; |
af7ee8bf CD |
12434 | case ISA_MIPS1: |
12435 | case ISA_MIPS2: | |
12436 | case ISA_MIPS32: | |
12437 | case ISA_MIPS32R2: | |
98d3f06f KH |
12438 | mips_opts.gp32 = 1; |
12439 | mips_opts.fp32 = 1; | |
12440 | break; | |
af7ee8bf CD |
12441 | case ISA_MIPS3: |
12442 | case ISA_MIPS4: | |
12443 | case ISA_MIPS5: | |
12444 | case ISA_MIPS64: | |
5f74bc13 | 12445 | case ISA_MIPS64R2: |
98d3f06f KH |
12446 | mips_opts.gp32 = 0; |
12447 | mips_opts.fp32 = 0; | |
12448 | break; | |
12449 | default: | |
12450 | as_bad (_("unknown ISA level %s"), name + 4); | |
12451 | break; | |
12452 | } | |
af7ee8bf | 12453 | if (reset) |
98d3f06f | 12454 | { |
af7ee8bf CD |
12455 | mips_opts.gp32 = file_mips_gp32; |
12456 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 12457 | } |
252b5132 RH |
12458 | } |
12459 | else if (strcmp (name, "autoextend") == 0) | |
12460 | mips_opts.noautoextend = 0; | |
12461 | else if (strcmp (name, "noautoextend") == 0) | |
12462 | mips_opts.noautoextend = 1; | |
12463 | else if (strcmp (name, "push") == 0) | |
12464 | { | |
12465 | struct mips_option_stack *s; | |
12466 | ||
12467 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
12468 | s->next = mips_opts_stack; | |
12469 | s->options = mips_opts; | |
12470 | mips_opts_stack = s; | |
12471 | } | |
12472 | else if (strcmp (name, "pop") == 0) | |
12473 | { | |
12474 | struct mips_option_stack *s; | |
12475 | ||
12476 | s = mips_opts_stack; | |
12477 | if (s == NULL) | |
12478 | as_bad (_(".set pop with no .set push")); | |
12479 | else | |
12480 | { | |
12481 | /* If we're changing the reorder mode we need to handle | |
12482 | delay slots correctly. */ | |
12483 | if (s->options.noreorder && ! mips_opts.noreorder) | |
7d10b47d | 12484 | start_noreorder (); |
252b5132 | 12485 | else if (! s->options.noreorder && mips_opts.noreorder) |
7d10b47d | 12486 | end_noreorder (); |
252b5132 RH |
12487 | |
12488 | mips_opts = s->options; | |
12489 | mips_opts_stack = s->next; | |
12490 | free (s); | |
12491 | } | |
12492 | } | |
aed1a261 RS |
12493 | else if (strcmp (name, "sym32") == 0) |
12494 | mips_opts.sym32 = TRUE; | |
12495 | else if (strcmp (name, "nosym32") == 0) | |
12496 | mips_opts.sym32 = FALSE; | |
252b5132 RH |
12497 | else |
12498 | { | |
12499 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
12500 | } | |
12501 | *input_line_pointer = ch; | |
12502 | demand_empty_rest_of_line (); | |
12503 | } | |
12504 | ||
12505 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
12506 | .option pic2. It means to generate SVR4 PIC calls. */ | |
12507 | ||
12508 | static void | |
17a2f251 | 12509 | s_abicalls (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
12510 | { |
12511 | mips_pic = SVR4_PIC; | |
143d77c5 | 12512 | mips_abicalls = TRUE; |
4d0d148d TS |
12513 | |
12514 | if (g_switch_seen && g_switch_value != 0) | |
12515 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
12516 | g_switch_value = 0; | |
12517 | ||
252b5132 RH |
12518 | bfd_set_gp_size (stdoutput, 0); |
12519 | demand_empty_rest_of_line (); | |
12520 | } | |
12521 | ||
12522 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
12523 | PIC code. It sets the $gp register for the function based on the | |
12524 | function address, which is in the register named in the argument. | |
12525 | This uses a relocation against _gp_disp, which is handled specially | |
12526 | by the linker. The result is: | |
12527 | lui $gp,%hi(_gp_disp) | |
12528 | addiu $gp,$gp,%lo(_gp_disp) | |
12529 | addu $gp,$gp,.cpload argument | |
aa6975fb ILT |
12530 | The .cpload argument is normally $25 == $t9. |
12531 | ||
12532 | The -mno-shared option changes this to: | |
bbe506e8 TS |
12533 | lui $gp,%hi(__gnu_local_gp) |
12534 | addiu $gp,$gp,%lo(__gnu_local_gp) | |
aa6975fb ILT |
12535 | and the argument is ignored. This saves an instruction, but the |
12536 | resulting code is not position independent; it uses an absolute | |
bbe506e8 TS |
12537 | address for __gnu_local_gp. Thus code assembled with -mno-shared |
12538 | can go into an ordinary executable, but not into a shared library. */ | |
252b5132 RH |
12539 | |
12540 | static void | |
17a2f251 | 12541 | s_cpload (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
12542 | { |
12543 | expressionS ex; | |
aa6975fb ILT |
12544 | int reg; |
12545 | int in_shared; | |
252b5132 | 12546 | |
6478892d TS |
12547 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
12548 | .cpload is ignored. */ | |
12549 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
12550 | { |
12551 | s_ignore (0); | |
12552 | return; | |
12553 | } | |
12554 | ||
d3ecfc59 | 12555 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
12556 | if (mips_opts.noreorder == 0) |
12557 | as_warn (_(".cpload not in noreorder section")); | |
12558 | ||
aa6975fb ILT |
12559 | reg = tc_get_register (0); |
12560 | ||
12561 | /* If we need to produce a 64-bit address, we are better off using | |
12562 | the default instruction sequence. */ | |
aed1a261 | 12563 | in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS; |
aa6975fb | 12564 | |
252b5132 | 12565 | ex.X_op = O_symbol; |
bbe506e8 TS |
12566 | ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : |
12567 | "__gnu_local_gp"); | |
252b5132 RH |
12568 | ex.X_op_symbol = NULL; |
12569 | ex.X_add_number = 0; | |
12570 | ||
12571 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 12572 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 12573 | |
584892a6 | 12574 | macro_start (); |
67c0d1eb RS |
12575 | macro_build_lui (&ex, mips_gp_register); |
12576 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
17a2f251 | 12577 | mips_gp_register, BFD_RELOC_LO16); |
aa6975fb ILT |
12578 | if (in_shared) |
12579 | macro_build (NULL, "addu", "d,v,t", mips_gp_register, | |
12580 | mips_gp_register, reg); | |
584892a6 | 12581 | macro_end (); |
252b5132 RH |
12582 | |
12583 | demand_empty_rest_of_line (); | |
12584 | } | |
12585 | ||
6478892d TS |
12586 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
12587 | .cpsetup $reg1, offset|$reg2, label | |
12588 | ||
12589 | If offset is given, this results in: | |
12590 | sd $gp, offset($sp) | |
956cd1d6 | 12591 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
12592 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
12593 | daddu $gp, $gp, $reg1 | |
6478892d TS |
12594 | |
12595 | If $reg2 is given, this results in: | |
12596 | daddu $reg2, $gp, $0 | |
956cd1d6 | 12597 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
12598 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
12599 | daddu $gp, $gp, $reg1 | |
aa6975fb ILT |
12600 | $reg1 is normally $25 == $t9. |
12601 | ||
12602 | The -mno-shared option replaces the last three instructions with | |
12603 | lui $gp,%hi(_gp) | |
12604 | addiu $gp,$gp,%lo(_gp) | |
12605 | */ | |
12606 | ||
6478892d | 12607 | static void |
17a2f251 | 12608 | s_cpsetup (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
12609 | { |
12610 | expressionS ex_off; | |
12611 | expressionS ex_sym; | |
12612 | int reg1; | |
6478892d | 12613 | |
8586fc66 | 12614 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
12615 | We also need NewABI support. */ |
12616 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12617 | { | |
12618 | s_ignore (0); | |
12619 | return; | |
12620 | } | |
12621 | ||
12622 | reg1 = tc_get_register (0); | |
12623 | SKIP_WHITESPACE (); | |
12624 | if (*input_line_pointer != ',') | |
12625 | { | |
12626 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
12627 | return; | |
12628 | } | |
12629 | else | |
80245285 | 12630 | ++input_line_pointer; |
6478892d TS |
12631 | SKIP_WHITESPACE (); |
12632 | if (*input_line_pointer == '$') | |
80245285 TS |
12633 | { |
12634 | mips_cpreturn_register = tc_get_register (0); | |
12635 | mips_cpreturn_offset = -1; | |
12636 | } | |
6478892d | 12637 | else |
80245285 TS |
12638 | { |
12639 | mips_cpreturn_offset = get_absolute_expression (); | |
12640 | mips_cpreturn_register = -1; | |
12641 | } | |
6478892d TS |
12642 | SKIP_WHITESPACE (); |
12643 | if (*input_line_pointer != ',') | |
12644 | { | |
12645 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
12646 | return; | |
12647 | } | |
12648 | else | |
f9419b05 | 12649 | ++input_line_pointer; |
6478892d | 12650 | SKIP_WHITESPACE (); |
f21f8242 | 12651 | expression (&ex_sym); |
6478892d | 12652 | |
584892a6 | 12653 | macro_start (); |
6478892d TS |
12654 | if (mips_cpreturn_register == -1) |
12655 | { | |
12656 | ex_off.X_op = O_constant; | |
12657 | ex_off.X_add_symbol = NULL; | |
12658 | ex_off.X_op_symbol = NULL; | |
12659 | ex_off.X_add_number = mips_cpreturn_offset; | |
12660 | ||
67c0d1eb | 12661 | macro_build (&ex_off, "sd", "t,o(b)", mips_gp_register, |
17a2f251 | 12662 | BFD_RELOC_LO16, SP); |
6478892d TS |
12663 | } |
12664 | else | |
67c0d1eb | 12665 | macro_build (NULL, "daddu", "d,v,t", mips_cpreturn_register, |
17a2f251 | 12666 | mips_gp_register, 0); |
6478892d | 12667 | |
aed1a261 | 12668 | if (mips_in_shared || HAVE_64BIT_SYMBOLS) |
aa6975fb ILT |
12669 | { |
12670 | macro_build (&ex_sym, "lui", "t,u", mips_gp_register, | |
12671 | -1, BFD_RELOC_GPREL16, BFD_RELOC_MIPS_SUB, | |
12672 | BFD_RELOC_HI16_S); | |
12673 | ||
12674 | macro_build (&ex_sym, "addiu", "t,r,j", mips_gp_register, | |
12675 | mips_gp_register, -1, BFD_RELOC_GPREL16, | |
12676 | BFD_RELOC_MIPS_SUB, BFD_RELOC_LO16); | |
12677 | ||
12678 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", mips_gp_register, | |
12679 | mips_gp_register, reg1); | |
12680 | } | |
12681 | else | |
12682 | { | |
12683 | expressionS ex; | |
12684 | ||
12685 | ex.X_op = O_symbol; | |
4184909a | 12686 | ex.X_add_symbol = symbol_find_or_make ("__gnu_local_gp"); |
aa6975fb ILT |
12687 | ex.X_op_symbol = NULL; |
12688 | ex.X_add_number = 0; | |
6e1304d8 | 12689 | |
aa6975fb ILT |
12690 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ |
12691 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; | |
12692 | ||
12693 | macro_build_lui (&ex, mips_gp_register); | |
12694 | macro_build (&ex, "addiu", "t,r,j", mips_gp_register, | |
12695 | mips_gp_register, BFD_RELOC_LO16); | |
12696 | } | |
f21f8242 | 12697 | |
584892a6 | 12698 | macro_end (); |
6478892d TS |
12699 | |
12700 | demand_empty_rest_of_line (); | |
12701 | } | |
12702 | ||
12703 | static void | |
17a2f251 | 12704 | s_cplocal (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
12705 | { |
12706 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
12707 | .cplocal is ignored. */ | |
12708 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12709 | { | |
12710 | s_ignore (0); | |
12711 | return; | |
12712 | } | |
12713 | ||
12714 | mips_gp_register = tc_get_register (0); | |
85b51719 | 12715 | demand_empty_rest_of_line (); |
6478892d TS |
12716 | } |
12717 | ||
252b5132 RH |
12718 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
12719 | offset from $sp. The offset is remembered, and after making a PIC | |
12720 | call $gp is restored from that location. */ | |
12721 | ||
12722 | static void | |
17a2f251 | 12723 | s_cprestore (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
12724 | { |
12725 | expressionS ex; | |
252b5132 | 12726 | |
6478892d | 12727 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 12728 | .cprestore is ignored. */ |
6478892d | 12729 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
12730 | { |
12731 | s_ignore (0); | |
12732 | return; | |
12733 | } | |
12734 | ||
12735 | mips_cprestore_offset = get_absolute_expression (); | |
7a621144 | 12736 | mips_cprestore_valid = 1; |
252b5132 RH |
12737 | |
12738 | ex.X_op = O_constant; | |
12739 | ex.X_add_symbol = NULL; | |
12740 | ex.X_op_symbol = NULL; | |
12741 | ex.X_add_number = mips_cprestore_offset; | |
12742 | ||
584892a6 | 12743 | macro_start (); |
67c0d1eb RS |
12744 | macro_build_ldst_constoffset (&ex, ADDRESS_STORE_INSN, mips_gp_register, |
12745 | SP, HAVE_64BIT_ADDRESSES); | |
584892a6 | 12746 | macro_end (); |
252b5132 RH |
12747 | |
12748 | demand_empty_rest_of_line (); | |
12749 | } | |
12750 | ||
6478892d | 12751 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
67c1ffbe | 12752 | was given in the preceding .cpsetup, it results in: |
6478892d | 12753 | ld $gp, offset($sp) |
76b3015f | 12754 | |
6478892d | 12755 | If a register $reg2 was given there, it results in: |
609f23f4 | 12756 | daddu $gp, $reg2, $0 |
6478892d TS |
12757 | */ |
12758 | static void | |
17a2f251 | 12759 | s_cpreturn (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
12760 | { |
12761 | expressionS ex; | |
6478892d TS |
12762 | |
12763 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
12764 | We also need NewABI support. */ | |
12765 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12766 | { | |
12767 | s_ignore (0); | |
12768 | return; | |
12769 | } | |
12770 | ||
584892a6 | 12771 | macro_start (); |
6478892d TS |
12772 | if (mips_cpreturn_register == -1) |
12773 | { | |
12774 | ex.X_op = O_constant; | |
12775 | ex.X_add_symbol = NULL; | |
12776 | ex.X_op_symbol = NULL; | |
12777 | ex.X_add_number = mips_cpreturn_offset; | |
12778 | ||
67c0d1eb | 12779 | macro_build (&ex, "ld", "t,o(b)", mips_gp_register, BFD_RELOC_LO16, SP); |
6478892d TS |
12780 | } |
12781 | else | |
67c0d1eb | 12782 | macro_build (NULL, "daddu", "d,v,t", mips_gp_register, |
17a2f251 | 12783 | mips_cpreturn_register, 0); |
584892a6 | 12784 | macro_end (); |
6478892d TS |
12785 | |
12786 | demand_empty_rest_of_line (); | |
12787 | } | |
12788 | ||
12789 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC | |
12790 | code. It sets the offset to use in gp_rel relocations. */ | |
12791 | ||
12792 | static void | |
17a2f251 | 12793 | s_gpvalue (int ignore ATTRIBUTE_UNUSED) |
6478892d TS |
12794 | { |
12795 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
12796 | We also need NewABI support. */ | |
12797 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12798 | { | |
12799 | s_ignore (0); | |
12800 | return; | |
12801 | } | |
12802 | ||
def2e0dd | 12803 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
12804 | |
12805 | demand_empty_rest_of_line (); | |
12806 | } | |
12807 | ||
252b5132 RH |
12808 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
12809 | code. It generates a 32 bit GP relative reloc. */ | |
12810 | ||
12811 | static void | |
17a2f251 | 12812 | s_gpword (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
12813 | { |
12814 | symbolS *label; | |
12815 | expressionS ex; | |
12816 | char *p; | |
12817 | ||
12818 | /* When not generating PIC code, this is treated as .word. */ | |
12819 | if (mips_pic != SVR4_PIC) | |
12820 | { | |
12821 | s_cons (2); | |
12822 | return; | |
12823 | } | |
12824 | ||
12825 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
7d10b47d | 12826 | mips_emit_delays (); |
252b5132 RH |
12827 | if (auto_align) |
12828 | mips_align (2, 0, label); | |
12829 | mips_clear_insn_labels (); | |
12830 | ||
12831 | expression (&ex); | |
12832 | ||
12833 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
12834 | { | |
12835 | as_bad (_("Unsupported use of .gpword")); | |
12836 | ignore_rest_of_line (); | |
12837 | } | |
12838 | ||
12839 | p = frag_more (4); | |
17a2f251 | 12840 | md_number_to_chars (p, 0, 4); |
b34976b6 | 12841 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 12842 | BFD_RELOC_GPREL32); |
252b5132 RH |
12843 | |
12844 | demand_empty_rest_of_line (); | |
12845 | } | |
12846 | ||
10181a0d | 12847 | static void |
17a2f251 | 12848 | s_gpdword (int ignore ATTRIBUTE_UNUSED) |
10181a0d AO |
12849 | { |
12850 | symbolS *label; | |
12851 | expressionS ex; | |
12852 | char *p; | |
12853 | ||
12854 | /* When not generating PIC code, this is treated as .dword. */ | |
12855 | if (mips_pic != SVR4_PIC) | |
12856 | { | |
12857 | s_cons (3); | |
12858 | return; | |
12859 | } | |
12860 | ||
12861 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
7d10b47d | 12862 | mips_emit_delays (); |
10181a0d AO |
12863 | if (auto_align) |
12864 | mips_align (3, 0, label); | |
12865 | mips_clear_insn_labels (); | |
12866 | ||
12867 | expression (&ex); | |
12868 | ||
12869 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
12870 | { | |
12871 | as_bad (_("Unsupported use of .gpdword")); | |
12872 | ignore_rest_of_line (); | |
12873 | } | |
12874 | ||
12875 | p = frag_more (8); | |
17a2f251 | 12876 | md_number_to_chars (p, 0, 8); |
a105a300 | 12877 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
6e1304d8 | 12878 | BFD_RELOC_GPREL32)->fx_tcbit = 1; |
10181a0d AO |
12879 | |
12880 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
6e1304d8 RS |
12881 | fix_new (frag_now, p - frag_now->fr_literal, 8, NULL, 0, |
12882 | FALSE, BFD_RELOC_64)->fx_tcbit = 1; | |
10181a0d AO |
12883 | |
12884 | demand_empty_rest_of_line (); | |
12885 | } | |
12886 | ||
252b5132 RH |
12887 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
12888 | tables in SVR4 PIC code. */ | |
12889 | ||
12890 | static void | |
17a2f251 | 12891 | s_cpadd (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 12892 | { |
252b5132 RH |
12893 | int reg; |
12894 | ||
10181a0d AO |
12895 | /* This is ignored when not generating SVR4 PIC code. */ |
12896 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
12897 | { |
12898 | s_ignore (0); | |
12899 | return; | |
12900 | } | |
12901 | ||
12902 | /* Add $gp to the register named as an argument. */ | |
584892a6 | 12903 | macro_start (); |
252b5132 | 12904 | reg = tc_get_register (0); |
67c0d1eb | 12905 | macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", reg, reg, mips_gp_register); |
584892a6 | 12906 | macro_end (); |
252b5132 | 12907 | |
bdaaa2e1 | 12908 | demand_empty_rest_of_line (); |
252b5132 RH |
12909 | } |
12910 | ||
12911 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
12912 | mips16 mode. This permits the linker to handle them specially, | |
12913 | such as generating jalx instructions when needed. We also make | |
12914 | them odd for the duration of the assembly, in order to generate the | |
12915 | right sort of code. We will make them even in the adjust_symtab | |
12916 | routine, while leaving them marked. This is convenient for the | |
12917 | debugger and the disassembler. The linker knows to make them odd | |
12918 | again. */ | |
12919 | ||
12920 | static void | |
17a2f251 | 12921 | s_insn (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 12922 | { |
f9419b05 | 12923 | mips16_mark_labels (); |
252b5132 RH |
12924 | |
12925 | demand_empty_rest_of_line (); | |
12926 | } | |
12927 | ||
12928 | /* Handle a .stabn directive. We need these in order to mark a label | |
12929 | as being a mips16 text label correctly. Sometimes the compiler | |
12930 | will emit a label, followed by a .stabn, and then switch sections. | |
12931 | If the label and .stabn are in mips16 mode, then the label is | |
12932 | really a mips16 text label. */ | |
12933 | ||
12934 | static void | |
17a2f251 | 12935 | s_mips_stab (int type) |
252b5132 | 12936 | { |
f9419b05 | 12937 | if (type == 'n') |
252b5132 RH |
12938 | mips16_mark_labels (); |
12939 | ||
12940 | s_stab (type); | |
12941 | } | |
12942 | ||
12943 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. | |
12944 | */ | |
12945 | ||
12946 | static void | |
17a2f251 | 12947 | s_mips_weakext (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
12948 | { |
12949 | char *name; | |
12950 | int c; | |
12951 | symbolS *symbolP; | |
12952 | expressionS exp; | |
12953 | ||
12954 | name = input_line_pointer; | |
12955 | c = get_symbol_end (); | |
12956 | symbolP = symbol_find_or_make (name); | |
12957 | S_SET_WEAK (symbolP); | |
12958 | *input_line_pointer = c; | |
12959 | ||
12960 | SKIP_WHITESPACE (); | |
12961 | ||
12962 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
12963 | { | |
12964 | if (S_IS_DEFINED (symbolP)) | |
12965 | { | |
956cd1d6 | 12966 | as_bad ("ignoring attempt to redefine symbol %s", |
252b5132 RH |
12967 | S_GET_NAME (symbolP)); |
12968 | ignore_rest_of_line (); | |
12969 | return; | |
12970 | } | |
bdaaa2e1 | 12971 | |
252b5132 RH |
12972 | if (*input_line_pointer == ',') |
12973 | { | |
12974 | ++input_line_pointer; | |
12975 | SKIP_WHITESPACE (); | |
12976 | } | |
bdaaa2e1 | 12977 | |
252b5132 RH |
12978 | expression (&exp); |
12979 | if (exp.X_op != O_symbol) | |
12980 | { | |
12981 | as_bad ("bad .weakext directive"); | |
98d3f06f | 12982 | ignore_rest_of_line (); |
252b5132 RH |
12983 | return; |
12984 | } | |
49309057 | 12985 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
12986 | } |
12987 | ||
12988 | demand_empty_rest_of_line (); | |
12989 | } | |
12990 | ||
12991 | /* Parse a register string into a number. Called from the ECOFF code | |
12992 | to parse .frame. The argument is non-zero if this is the frame | |
12993 | register, so that we can record it in mips_frame_reg. */ | |
12994 | ||
12995 | int | |
17a2f251 | 12996 | tc_get_register (int frame) |
252b5132 | 12997 | { |
707bfff6 | 12998 | unsigned int reg; |
252b5132 RH |
12999 | |
13000 | SKIP_WHITESPACE (); | |
707bfff6 TS |
13001 | if (! reg_lookup (&input_line_pointer, RWARN | RTYPE_NUM | RTYPE_GP, ®)) |
13002 | reg = 0; | |
252b5132 | 13003 | if (frame) |
7a621144 DJ |
13004 | { |
13005 | mips_frame_reg = reg != 0 ? reg : SP; | |
13006 | mips_frame_reg_valid = 1; | |
13007 | mips_cprestore_valid = 0; | |
13008 | } | |
252b5132 RH |
13009 | return reg; |
13010 | } | |
13011 | ||
13012 | valueT | |
17a2f251 | 13013 | md_section_align (asection *seg, valueT addr) |
252b5132 RH |
13014 | { |
13015 | int align = bfd_get_section_alignment (stdoutput, seg); | |
13016 | ||
13017 | #ifdef OBJ_ELF | |
13018 | /* We don't need to align ELF sections to the full alignment. | |
13019 | However, Irix 5 may prefer that we align them at least to a 16 | |
13020 | byte boundary. We don't bother to align the sections if we are | |
13021 | targeted for an embedded system. */ | |
13022 | if (strcmp (TARGET_OS, "elf") == 0) | |
13023 | return addr; | |
13024 | if (align > 4) | |
13025 | align = 4; | |
13026 | #endif | |
13027 | ||
13028 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
13029 | } | |
13030 | ||
13031 | /* Utility routine, called from above as well. If called while the | |
13032 | input file is still being read, it's only an approximation. (For | |
13033 | example, a symbol may later become defined which appeared to be | |
13034 | undefined earlier.) */ | |
13035 | ||
13036 | static int | |
17a2f251 | 13037 | nopic_need_relax (symbolS *sym, int before_relaxing) |
252b5132 RH |
13038 | { |
13039 | if (sym == 0) | |
13040 | return 0; | |
13041 | ||
4d0d148d | 13042 | if (g_switch_value > 0) |
252b5132 RH |
13043 | { |
13044 | const char *symname; | |
13045 | int change; | |
13046 | ||
c9914766 | 13047 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
13048 | register. It can be if it is smaller than the -G size or if |
13049 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 13050 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
13051 | they can. */ |
13052 | symname = S_GET_NAME (sym); | |
13053 | if (symname != (const char *) NULL | |
13054 | && (strcmp (symname, "eprol") == 0 | |
13055 | || strcmp (symname, "etext") == 0 | |
13056 | || strcmp (symname, "_gp") == 0 | |
13057 | || strcmp (symname, "edata") == 0 | |
13058 | || strcmp (symname, "_fbss") == 0 | |
13059 | || strcmp (symname, "_fdata") == 0 | |
13060 | || strcmp (symname, "_ftext") == 0 | |
13061 | || strcmp (symname, "end") == 0 | |
13062 | || strcmp (symname, "_gp_disp") == 0)) | |
13063 | change = 1; | |
13064 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
13065 | && (0 | |
13066 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
13067 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
13068 | && (symbol_get_obj (sym)->ecoff_extern_size | |
13069 | <= g_switch_value)) | |
252b5132 RH |
13070 | #endif |
13071 | /* We must defer this decision until after the whole | |
13072 | file has been read, since there might be a .extern | |
13073 | after the first use of this symbol. */ | |
13074 | || (before_relaxing | |
13075 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 13076 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
13077 | #endif |
13078 | && S_GET_VALUE (sym) == 0) | |
13079 | || (S_GET_VALUE (sym) != 0 | |
13080 | && S_GET_VALUE (sym) <= g_switch_value))) | |
13081 | change = 0; | |
13082 | else | |
13083 | { | |
13084 | const char *segname; | |
13085 | ||
13086 | segname = segment_name (S_GET_SEGMENT (sym)); | |
13087 | assert (strcmp (segname, ".lit8") != 0 | |
13088 | && strcmp (segname, ".lit4") != 0); | |
13089 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
13090 | && strcmp (segname, ".sbss") != 0 |
13091 | && strncmp (segname, ".sdata.", 7) != 0 | |
13092 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); | |
252b5132 RH |
13093 | } |
13094 | return change; | |
13095 | } | |
13096 | else | |
c9914766 | 13097 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
13098 | return 1; |
13099 | } | |
13100 | ||
5919d012 RS |
13101 | |
13102 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
13103 | ||
13104 | static bfd_boolean | |
17a2f251 | 13105 | pic_need_relax (symbolS *sym, asection *segtype) |
5919d012 RS |
13106 | { |
13107 | asection *symsec; | |
13108 | bfd_boolean linkonce; | |
13109 | ||
13110 | /* Handle the case of a symbol equated to another symbol. */ | |
13111 | while (symbol_equated_reloc_p (sym)) | |
13112 | { | |
13113 | symbolS *n; | |
13114 | ||
13115 | /* It's possible to get a loop here in a badly written | |
13116 | program. */ | |
13117 | n = symbol_get_value_expression (sym)->X_add_symbol; | |
13118 | if (n == sym) | |
13119 | break; | |
13120 | sym = n; | |
13121 | } | |
13122 | ||
13123 | symsec = S_GET_SEGMENT (sym); | |
13124 | ||
13125 | /* duplicate the test for LINK_ONCE sections as in adjust_reloc_syms */ | |
13126 | linkonce = FALSE; | |
13127 | if (symsec != segtype && ! S_IS_LOCAL (sym)) | |
13128 | { | |
13129 | if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE) | |
13130 | != 0) | |
13131 | linkonce = TRUE; | |
13132 | ||
13133 | /* The GNU toolchain uses an extension for ELF: a section | |
13134 | beginning with the magic string .gnu.linkonce is a linkonce | |
13135 | section. */ | |
13136 | if (strncmp (segment_name (symsec), ".gnu.linkonce", | |
13137 | sizeof ".gnu.linkonce" - 1) == 0) | |
13138 | linkonce = TRUE; | |
13139 | } | |
13140 | ||
13141 | /* This must duplicate the test in adjust_reloc_syms. */ | |
13142 | return (symsec != &bfd_und_section | |
13143 | && symsec != &bfd_abs_section | |
13144 | && ! bfd_is_com_section (symsec) | |
13145 | && !linkonce | |
13146 | #ifdef OBJ_ELF | |
13147 | /* A global or weak symbol is treated as external. */ | |
13148 | && (OUTPUT_FLAVOR != bfd_target_elf_flavour | |
3e722fb5 | 13149 | || (! S_IS_WEAK (sym) && ! S_IS_EXTERNAL (sym))) |
5919d012 RS |
13150 | #endif |
13151 | ); | |
13152 | } | |
13153 | ||
13154 | ||
252b5132 RH |
13155 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
13156 | extended opcode. SEC is the section the frag is in. */ | |
13157 | ||
13158 | static int | |
17a2f251 | 13159 | mips16_extended_frag (fragS *fragp, asection *sec, long stretch) |
252b5132 RH |
13160 | { |
13161 | int type; | |
3994f87e | 13162 | const struct mips16_immed_operand *op; |
252b5132 RH |
13163 | offsetT val; |
13164 | int mintiny, maxtiny; | |
13165 | segT symsec; | |
98aa84af | 13166 | fragS *sym_frag; |
252b5132 RH |
13167 | |
13168 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
13169 | return 0; | |
13170 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
13171 | return 1; | |
13172 | ||
13173 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
13174 | op = mips16_immed_operands; | |
13175 | while (op->type != type) | |
13176 | { | |
13177 | ++op; | |
13178 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
13179 | } | |
13180 | ||
13181 | if (op->unsp) | |
13182 | { | |
13183 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
13184 | { | |
13185 | mintiny = 1; | |
13186 | maxtiny = 1 << op->nbits; | |
13187 | } | |
13188 | else | |
13189 | { | |
13190 | mintiny = 0; | |
13191 | maxtiny = (1 << op->nbits) - 1; | |
13192 | } | |
13193 | } | |
13194 | else | |
13195 | { | |
13196 | mintiny = - (1 << (op->nbits - 1)); | |
13197 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
13198 | } | |
13199 | ||
98aa84af | 13200 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 13201 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 13202 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
13203 | |
13204 | if (op->pcrel) | |
13205 | { | |
13206 | addressT addr; | |
13207 | ||
13208 | /* We won't have the section when we are called from | |
13209 | mips_relax_frag. However, we will always have been called | |
13210 | from md_estimate_size_before_relax first. If this is a | |
13211 | branch to a different section, we mark it as such. If SEC is | |
13212 | NULL, and the frag is not marked, then it must be a branch to | |
13213 | the same section. */ | |
13214 | if (sec == NULL) | |
13215 | { | |
13216 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
13217 | return 1; | |
13218 | } | |
13219 | else | |
13220 | { | |
98aa84af | 13221 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
13222 | if (symsec != sec) |
13223 | { | |
13224 | fragp->fr_subtype = | |
13225 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13226 | ||
13227 | /* FIXME: We should support this, and let the linker | |
13228 | catch branches and loads that are out of range. */ | |
13229 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
13230 | _("unsupported PC relative reference to different section")); | |
13231 | ||
13232 | return 1; | |
13233 | } | |
98aa84af AM |
13234 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
13235 | /* Assume non-extended on the first relaxation pass. | |
13236 | The address we have calculated will be bogus if this is | |
13237 | a forward branch to another frag, as the forward frag | |
13238 | will have fr_address == 0. */ | |
13239 | return 0; | |
252b5132 RH |
13240 | } |
13241 | ||
13242 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
13243 | the same section. If the relax_marker of the symbol fragment |
13244 | differs from the relax_marker of this fragment, we have not | |
13245 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
13246 | in STRETCH in order to get a better estimate of the address. |
13247 | This particularly matters because of the shift bits. */ | |
13248 | if (stretch != 0 | |
98aa84af | 13249 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
13250 | { |
13251 | fragS *f; | |
13252 | ||
13253 | /* Adjust stretch for any alignment frag. Note that if have | |
13254 | been expanding the earlier code, the symbol may be | |
13255 | defined in what appears to be an earlier frag. FIXME: | |
13256 | This doesn't handle the fr_subtype field, which specifies | |
13257 | a maximum number of bytes to skip when doing an | |
13258 | alignment. */ | |
98aa84af | 13259 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
13260 | { |
13261 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
13262 | { | |
13263 | if (stretch < 0) | |
13264 | stretch = - ((- stretch) | |
13265 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
13266 | else | |
13267 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
13268 | if (stretch == 0) | |
13269 | break; | |
13270 | } | |
13271 | } | |
13272 | if (f != NULL) | |
13273 | val += stretch; | |
13274 | } | |
13275 | ||
13276 | addr = fragp->fr_address + fragp->fr_fix; | |
13277 | ||
13278 | /* The base address rules are complicated. The base address of | |
13279 | a branch is the following instruction. The base address of a | |
13280 | PC relative load or add is the instruction itself, but if it | |
13281 | is in a delay slot (in which case it can not be extended) use | |
13282 | the address of the instruction whose delay slot it is in. */ | |
13283 | if (type == 'p' || type == 'q') | |
13284 | { | |
13285 | addr += 2; | |
13286 | ||
13287 | /* If we are currently assuming that this frag should be | |
13288 | extended, then, the current address is two bytes | |
bdaaa2e1 | 13289 | higher. */ |
252b5132 RH |
13290 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
13291 | addr += 2; | |
13292 | ||
13293 | /* Ignore the low bit in the target, since it will be set | |
13294 | for a text label. */ | |
13295 | if ((val & 1) != 0) | |
13296 | --val; | |
13297 | } | |
13298 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
13299 | addr -= 4; | |
13300 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
13301 | addr -= 2; | |
13302 | ||
13303 | val -= addr & ~ ((1 << op->shift) - 1); | |
13304 | ||
13305 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
13306 | if (type == 'p' || type == 'q') | |
13307 | val /= 2; | |
13308 | ||
13309 | /* If any of the shifted bits are set, we must use an extended | |
13310 | opcode. If the address depends on the size of this | |
13311 | instruction, this can lead to a loop, so we arrange to always | |
13312 | use an extended opcode. We only check this when we are in | |
13313 | the main relaxation loop, when SEC is NULL. */ | |
13314 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
13315 | { | |
13316 | fragp->fr_subtype = | |
13317 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13318 | return 1; | |
13319 | } | |
13320 | ||
13321 | /* If we are about to mark a frag as extended because the value | |
13322 | is precisely maxtiny + 1, then there is a chance of an | |
13323 | infinite loop as in the following code: | |
13324 | la $4,foo | |
13325 | .skip 1020 | |
13326 | .align 2 | |
13327 | foo: | |
13328 | In this case when the la is extended, foo is 0x3fc bytes | |
13329 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
13330 | the la must be extended. To avoid this loop, we mark the | |
13331 | frag as extended if it was small, and is about to become | |
13332 | extended with a value of maxtiny + 1. */ | |
13333 | if (val == ((maxtiny + 1) << op->shift) | |
13334 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
13335 | && sec == NULL) | |
13336 | { | |
13337 | fragp->fr_subtype = | |
13338 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13339 | return 1; | |
13340 | } | |
13341 | } | |
13342 | else if (symsec != absolute_section && sec != NULL) | |
13343 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
13344 | ||
13345 | if ((val & ((1 << op->shift) - 1)) != 0 | |
13346 | || val < (mintiny << op->shift) | |
13347 | || val > (maxtiny << op->shift)) | |
13348 | return 1; | |
13349 | else | |
13350 | return 0; | |
13351 | } | |
13352 | ||
4a6a3df4 AO |
13353 | /* Compute the length of a branch sequence, and adjust the |
13354 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
13355 | worst-case length is computed, with UPDATE being used to indicate | |
13356 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
13357 | branch is to be computed. */ | |
13358 | static int | |
17a2f251 | 13359 | relaxed_branch_length (fragS *fragp, asection *sec, int update) |
4a6a3df4 | 13360 | { |
b34976b6 | 13361 | bfd_boolean toofar; |
4a6a3df4 AO |
13362 | int length; |
13363 | ||
13364 | if (fragp | |
13365 | && S_IS_DEFINED (fragp->fr_symbol) | |
13366 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
13367 | { | |
13368 | addressT addr; | |
13369 | offsetT val; | |
13370 | ||
13371 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
13372 | ||
13373 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
13374 | ||
13375 | val -= addr; | |
13376 | ||
13377 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
13378 | } | |
13379 | else if (fragp) | |
13380 | /* If the symbol is not defined or it's in a different segment, | |
13381 | assume the user knows what's going on and emit a short | |
13382 | branch. */ | |
b34976b6 | 13383 | toofar = FALSE; |
4a6a3df4 | 13384 | else |
b34976b6 | 13385 | toofar = TRUE; |
4a6a3df4 AO |
13386 | |
13387 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
13388 | fragp->fr_subtype | |
af6ae2ad | 13389 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_UNCOND (fragp->fr_subtype), |
4a6a3df4 AO |
13390 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
13391 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
13392 | toofar); | |
13393 | ||
13394 | length = 4; | |
13395 | if (toofar) | |
13396 | { | |
13397 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
13398 | length += 8; | |
13399 | ||
13400 | if (mips_pic != NO_PIC) | |
13401 | { | |
13402 | /* Additional space for PIC loading of target address. */ | |
13403 | length += 8; | |
13404 | if (mips_opts.isa == ISA_MIPS1) | |
13405 | /* Additional space for $at-stabilizing nop. */ | |
13406 | length += 4; | |
13407 | } | |
13408 | ||
13409 | /* If branch is conditional. */ | |
13410 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
13411 | length += 8; | |
13412 | } | |
b34976b6 | 13413 | |
4a6a3df4 AO |
13414 | return length; |
13415 | } | |
13416 | ||
252b5132 RH |
13417 | /* Estimate the size of a frag before relaxing. Unless this is the |
13418 | mips16, we are not really relaxing here, and the final size is | |
13419 | encoded in the subtype information. For the mips16, we have to | |
13420 | decide whether we are using an extended opcode or not. */ | |
13421 | ||
252b5132 | 13422 | int |
17a2f251 | 13423 | md_estimate_size_before_relax (fragS *fragp, asection *segtype) |
252b5132 | 13424 | { |
5919d012 | 13425 | int change; |
252b5132 | 13426 | |
4a6a3df4 AO |
13427 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
13428 | { | |
13429 | ||
b34976b6 AM |
13430 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
13431 | ||
4a6a3df4 AO |
13432 | return fragp->fr_var; |
13433 | } | |
13434 | ||
252b5132 | 13435 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
13436 | /* We don't want to modify the EXTENDED bit here; it might get us |
13437 | into infinite loops. We change it only in mips_relax_frag(). */ | |
13438 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 RH |
13439 | |
13440 | if (mips_pic == NO_PIC) | |
5919d012 | 13441 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 13442 | else if (mips_pic == SVR4_PIC) |
5919d012 | 13443 | change = pic_need_relax (fragp->fr_symbol, segtype); |
0a44bf69 RS |
13444 | else if (mips_pic == VXWORKS_PIC) |
13445 | /* For vxworks, GOT16 relocations never have a corresponding LO16. */ | |
13446 | change = 0; | |
252b5132 RH |
13447 | else |
13448 | abort (); | |
13449 | ||
13450 | if (change) | |
13451 | { | |
4d7206a2 | 13452 | fragp->fr_subtype |= RELAX_USE_SECOND; |
4d7206a2 | 13453 | return -RELAX_FIRST (fragp->fr_subtype); |
252b5132 | 13454 | } |
4d7206a2 RS |
13455 | else |
13456 | return -RELAX_SECOND (fragp->fr_subtype); | |
252b5132 RH |
13457 | } |
13458 | ||
13459 | /* This is called to see whether a reloc against a defined symbol | |
de7e6852 | 13460 | should be converted into a reloc against a section. */ |
252b5132 RH |
13461 | |
13462 | int | |
17a2f251 | 13463 | mips_fix_adjustable (fixS *fixp) |
252b5132 | 13464 | { |
de7e6852 RS |
13465 | /* Don't adjust MIPS16 jump relocations, so we don't have to worry |
13466 | about the format of the offset in the .o file. */ | |
252b5132 RH |
13467 | if (fixp->fx_r_type == BFD_RELOC_MIPS16_JMP) |
13468 | return 0; | |
a161fe53 | 13469 | |
252b5132 RH |
13470 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
13471 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
13472 | return 0; | |
a161fe53 | 13473 | |
252b5132 RH |
13474 | if (fixp->fx_addsy == NULL) |
13475 | return 1; | |
a161fe53 | 13476 | |
de7e6852 RS |
13477 | /* If symbol SYM is in a mergeable section, relocations of the form |
13478 | SYM + 0 can usually be made section-relative. The mergeable data | |
13479 | is then identified by the section offset rather than by the symbol. | |
13480 | ||
13481 | However, if we're generating REL LO16 relocations, the offset is split | |
13482 | between the LO16 and parterning high part relocation. The linker will | |
13483 | need to recalculate the complete offset in order to correctly identify | |
13484 | the merge data. | |
13485 | ||
13486 | The linker has traditionally not looked for the parterning high part | |
13487 | relocation, and has thus allowed orphaned R_MIPS_LO16 relocations to be | |
13488 | placed anywhere. Rather than break backwards compatibility by changing | |
13489 | this, it seems better not to force the issue, and instead keep the | |
13490 | original symbol. This will work with either linker behavior. */ | |
704803a9 MR |
13491 | if ((fixp->fx_r_type == BFD_RELOC_LO16 |
13492 | || fixp->fx_r_type == BFD_RELOC_MIPS16_LO16 | |
13493 | || reloc_needs_lo_p (fixp->fx_r_type)) | |
de7e6852 RS |
13494 | && HAVE_IN_PLACE_ADDENDS |
13495 | && (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) != 0) | |
13496 | return 0; | |
13497 | ||
252b5132 | 13498 | #ifdef OBJ_ELF |
de7e6852 RS |
13499 | /* Don't adjust relocations against mips16 symbols, so that the linker |
13500 | can find them if it needs to set up a stub. */ | |
252b5132 RH |
13501 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour |
13502 | && S_GET_OTHER (fixp->fx_addsy) == STO_MIPS16 | |
13503 | && fixp->fx_subsy == NULL) | |
13504 | return 0; | |
13505 | #endif | |
a161fe53 | 13506 | |
252b5132 RH |
13507 | return 1; |
13508 | } | |
13509 | ||
13510 | /* Translate internal representation of relocation info to BFD target | |
13511 | format. */ | |
13512 | ||
13513 | arelent ** | |
17a2f251 | 13514 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
252b5132 RH |
13515 | { |
13516 | static arelent *retval[4]; | |
13517 | arelent *reloc; | |
13518 | bfd_reloc_code_real_type code; | |
13519 | ||
4b0cff4e TS |
13520 | memset (retval, 0, sizeof(retval)); |
13521 | reloc = retval[0] = (arelent *) xcalloc (1, sizeof (arelent)); | |
49309057 ILT |
13522 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
13523 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
13524 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
13525 | ||
bad36eac DJ |
13526 | if (fixp->fx_pcrel) |
13527 | { | |
13528 | assert (fixp->fx_r_type == BFD_RELOC_16_PCREL_S2); | |
13529 | ||
13530 | /* At this point, fx_addnumber is "symbol offset - pcrel address". | |
13531 | Relocations want only the symbol offset. */ | |
13532 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
13533 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
13534 | { | |
13535 | /* A gruesome hack which is a result of the gruesome gas | |
13536 | reloc handling. What's worse, for COFF (as opposed to | |
13537 | ECOFF), we might need yet another copy of reloc->address. | |
13538 | See bfd_install_relocation. */ | |
13539 | reloc->addend += reloc->address; | |
13540 | } | |
13541 | } | |
13542 | else | |
13543 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 13544 | |
438c16b8 TS |
13545 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
13546 | entry to be used in the relocation's section offset. */ | |
13547 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
13548 | { |
13549 | reloc->address = reloc->addend; | |
13550 | reloc->addend = 0; | |
13551 | } | |
13552 | ||
252b5132 | 13553 | code = fixp->fx_r_type; |
252b5132 | 13554 | |
bad36eac | 13555 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
252b5132 RH |
13556 | if (reloc->howto == NULL) |
13557 | { | |
13558 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
13559 | _("Can not represent %s relocation in this object file format"), | |
13560 | bfd_get_reloc_code_name (code)); | |
13561 | retval[0] = NULL; | |
13562 | } | |
13563 | ||
13564 | return retval; | |
13565 | } | |
13566 | ||
13567 | /* Relax a machine dependent frag. This returns the amount by which | |
13568 | the current size of the frag should change. */ | |
13569 | ||
13570 | int | |
17a2f251 | 13571 | mips_relax_frag (asection *sec, fragS *fragp, long stretch) |
252b5132 | 13572 | { |
4a6a3df4 AO |
13573 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
13574 | { | |
13575 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
13576 | |
13577 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
13578 | |
13579 | return fragp->fr_var - old_var; | |
13580 | } | |
13581 | ||
252b5132 RH |
13582 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
13583 | return 0; | |
13584 | ||
c4e7957c | 13585 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
13586 | { |
13587 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
13588 | return 0; | |
13589 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
13590 | return 2; | |
13591 | } | |
13592 | else | |
13593 | { | |
13594 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
13595 | return 0; | |
13596 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
13597 | return -2; | |
13598 | } | |
13599 | ||
13600 | return 0; | |
13601 | } | |
13602 | ||
13603 | /* Convert a machine dependent frag. */ | |
13604 | ||
13605 | void | |
17a2f251 | 13606 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, segT asec, fragS *fragp) |
252b5132 | 13607 | { |
4a6a3df4 AO |
13608 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
13609 | { | |
13610 | bfd_byte *buf; | |
13611 | unsigned long insn; | |
13612 | expressionS exp; | |
13613 | fixS *fixp; | |
b34976b6 | 13614 | |
4a6a3df4 AO |
13615 | buf = (bfd_byte *)fragp->fr_literal + fragp->fr_fix; |
13616 | ||
13617 | if (target_big_endian) | |
13618 | insn = bfd_getb32 (buf); | |
13619 | else | |
13620 | insn = bfd_getl32 (buf); | |
b34976b6 | 13621 | |
4a6a3df4 AO |
13622 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
13623 | { | |
13624 | /* We generate a fixup instead of applying it right now | |
13625 | because, if there are linker relaxations, we're going to | |
13626 | need the relocations. */ | |
13627 | exp.X_op = O_symbol; | |
13628 | exp.X_add_symbol = fragp->fr_symbol; | |
13629 | exp.X_add_number = fragp->fr_offset; | |
13630 | ||
13631 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 13632 | 4, &exp, TRUE, BFD_RELOC_16_PCREL_S2); |
4a6a3df4 AO |
13633 | fixp->fx_file = fragp->fr_file; |
13634 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 13635 | |
2132e3a3 | 13636 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
13637 | buf += 4; |
13638 | } | |
13639 | else | |
13640 | { | |
13641 | int i; | |
13642 | ||
13643 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
13644 | _("relaxed out-of-range branch into a jump")); | |
13645 | ||
13646 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
13647 | goto uncond; | |
13648 | ||
13649 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
13650 | { | |
13651 | /* Reverse the branch. */ | |
13652 | switch ((insn >> 28) & 0xf) | |
13653 | { | |
13654 | case 4: | |
13655 | /* bc[0-3][tf]l? and bc1any[24][ft] instructions can | |
13656 | have the condition reversed by tweaking a single | |
13657 | bit, and their opcodes all have 0x4???????. */ | |
13658 | assert ((insn & 0xf1000000) == 0x41000000); | |
13659 | insn ^= 0x00010000; | |
13660 | break; | |
13661 | ||
13662 | case 0: | |
13663 | /* bltz 0x04000000 bgez 0x04010000 | |
13664 | bltzal 0x04100000 bgezal 0x04110000 */ | |
13665 | assert ((insn & 0xfc0e0000) == 0x04000000); | |
13666 | insn ^= 0x00010000; | |
13667 | break; | |
b34976b6 | 13668 | |
4a6a3df4 AO |
13669 | case 1: |
13670 | /* beq 0x10000000 bne 0x14000000 | |
13671 | blez 0x18000000 bgtz 0x1c000000 */ | |
13672 | insn ^= 0x04000000; | |
13673 | break; | |
13674 | ||
13675 | default: | |
13676 | abort (); | |
13677 | } | |
13678 | } | |
13679 | ||
13680 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
13681 | { | |
13682 | /* Clear the and-link bit. */ | |
13683 | assert ((insn & 0xfc1c0000) == 0x04100000); | |
13684 | ||
13685 | /* bltzal 0x04100000 bgezal 0x04110000 | |
13686 | bltzall 0x04120000 bgezall 0x04130000 */ | |
13687 | insn &= ~0x00100000; | |
13688 | } | |
13689 | ||
13690 | /* Branch over the branch (if the branch was likely) or the | |
13691 | full jump (not likely case). Compute the offset from the | |
13692 | current instruction to branch to. */ | |
13693 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
13694 | i = 16; | |
13695 | else | |
13696 | { | |
13697 | /* How many bytes in instructions we've already emitted? */ | |
13698 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
13699 | /* How many bytes in instructions from here to the end? */ | |
13700 | i = fragp->fr_var - i; | |
13701 | } | |
13702 | /* Convert to instruction count. */ | |
13703 | i >>= 2; | |
13704 | /* Branch counts from the next instruction. */ | |
b34976b6 | 13705 | i--; |
4a6a3df4 AO |
13706 | insn |= i; |
13707 | /* Branch over the jump. */ | |
2132e3a3 | 13708 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
13709 | buf += 4; |
13710 | ||
13711 | /* Nop */ | |
2132e3a3 | 13712 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
13713 | buf += 4; |
13714 | ||
13715 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
13716 | { | |
13717 | /* beql $0, $0, 2f */ | |
13718 | insn = 0x50000000; | |
13719 | /* Compute the PC offset from the current instruction to | |
13720 | the end of the variable frag. */ | |
13721 | /* How many bytes in instructions we've already emitted? */ | |
13722 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
13723 | /* How many bytes in instructions from here to the end? */ | |
13724 | i = fragp->fr_var - i; | |
13725 | /* Convert to instruction count. */ | |
13726 | i >>= 2; | |
13727 | /* Don't decrement i, because we want to branch over the | |
13728 | delay slot. */ | |
13729 | ||
13730 | insn |= i; | |
2132e3a3 | 13731 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
13732 | buf += 4; |
13733 | ||
2132e3a3 | 13734 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
13735 | buf += 4; |
13736 | } | |
13737 | ||
13738 | uncond: | |
13739 | if (mips_pic == NO_PIC) | |
13740 | { | |
13741 | /* j or jal. */ | |
13742 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
13743 | ? 0x0c000000 : 0x08000000); | |
13744 | exp.X_op = O_symbol; | |
13745 | exp.X_add_symbol = fragp->fr_symbol; | |
13746 | exp.X_add_number = fragp->fr_offset; | |
13747 | ||
13748 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 13749 | 4, &exp, FALSE, BFD_RELOC_MIPS_JMP); |
4a6a3df4 AO |
13750 | fixp->fx_file = fragp->fr_file; |
13751 | fixp->fx_line = fragp->fr_line; | |
13752 | ||
2132e3a3 | 13753 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
13754 | buf += 4; |
13755 | } | |
13756 | else | |
13757 | { | |
13758 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ | |
13759 | insn = HAVE_64BIT_ADDRESSES ? 0xdf810000 : 0x8f810000; | |
13760 | exp.X_op = O_symbol; | |
13761 | exp.X_add_symbol = fragp->fr_symbol; | |
13762 | exp.X_add_number = fragp->fr_offset; | |
13763 | ||
13764 | if (fragp->fr_offset) | |
13765 | { | |
13766 | exp.X_add_symbol = make_expr_symbol (&exp); | |
13767 | exp.X_add_number = 0; | |
13768 | } | |
13769 | ||
13770 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 13771 | 4, &exp, FALSE, BFD_RELOC_MIPS_GOT16); |
4a6a3df4 AO |
13772 | fixp->fx_file = fragp->fr_file; |
13773 | fixp->fx_line = fragp->fr_line; | |
13774 | ||
2132e3a3 | 13775 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 | 13776 | buf += 4; |
b34976b6 | 13777 | |
4a6a3df4 AO |
13778 | if (mips_opts.isa == ISA_MIPS1) |
13779 | { | |
13780 | /* nop */ | |
2132e3a3 | 13781 | md_number_to_chars ((char *) buf, 0, 4); |
4a6a3df4 AO |
13782 | buf += 4; |
13783 | } | |
13784 | ||
13785 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
13786 | insn = HAVE_64BIT_ADDRESSES ? 0x64210000 : 0x24210000; | |
13787 | ||
13788 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
3994f87e | 13789 | 4, &exp, FALSE, BFD_RELOC_LO16); |
4a6a3df4 AO |
13790 | fixp->fx_file = fragp->fr_file; |
13791 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 13792 | |
2132e3a3 | 13793 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
13794 | buf += 4; |
13795 | ||
13796 | /* j(al)r $at. */ | |
13797 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
13798 | insn = 0x0020f809; | |
13799 | else | |
13800 | insn = 0x00200008; | |
13801 | ||
2132e3a3 | 13802 | md_number_to_chars ((char *) buf, insn, 4); |
4a6a3df4 AO |
13803 | buf += 4; |
13804 | } | |
13805 | } | |
13806 | ||
13807 | assert (buf == (bfd_byte *)fragp->fr_literal | |
13808 | + fragp->fr_fix + fragp->fr_var); | |
13809 | ||
13810 | fragp->fr_fix += fragp->fr_var; | |
13811 | ||
13812 | return; | |
13813 | } | |
13814 | ||
252b5132 RH |
13815 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
13816 | { | |
13817 | int type; | |
3994f87e | 13818 | const struct mips16_immed_operand *op; |
b34976b6 | 13819 | bfd_boolean small, ext; |
252b5132 RH |
13820 | offsetT val; |
13821 | bfd_byte *buf; | |
13822 | unsigned long insn; | |
b34976b6 | 13823 | bfd_boolean use_extend; |
252b5132 RH |
13824 | unsigned short extend; |
13825 | ||
13826 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
13827 | op = mips16_immed_operands; | |
13828 | while (op->type != type) | |
13829 | ++op; | |
13830 | ||
13831 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
13832 | { | |
b34976b6 AM |
13833 | small = FALSE; |
13834 | ext = TRUE; | |
252b5132 RH |
13835 | } |
13836 | else | |
13837 | { | |
b34976b6 AM |
13838 | small = TRUE; |
13839 | ext = FALSE; | |
252b5132 RH |
13840 | } |
13841 | ||
6386f3a7 | 13842 | resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
13843 | val = S_GET_VALUE (fragp->fr_symbol); |
13844 | if (op->pcrel) | |
13845 | { | |
13846 | addressT addr; | |
13847 | ||
13848 | addr = fragp->fr_address + fragp->fr_fix; | |
13849 | ||
13850 | /* The rules for the base address of a PC relative reloc are | |
13851 | complicated; see mips16_extended_frag. */ | |
13852 | if (type == 'p' || type == 'q') | |
13853 | { | |
13854 | addr += 2; | |
13855 | if (ext) | |
13856 | addr += 2; | |
13857 | /* Ignore the low bit in the target, since it will be | |
13858 | set for a text label. */ | |
13859 | if ((val & 1) != 0) | |
13860 | --val; | |
13861 | } | |
13862 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
13863 | addr -= 4; | |
13864 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
13865 | addr -= 2; | |
13866 | ||
13867 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
13868 | val -= addr; | |
13869 | ||
13870 | /* Make sure the section winds up with the alignment we have | |
13871 | assumed. */ | |
13872 | if (op->shift > 0) | |
13873 | record_alignment (asec, op->shift); | |
13874 | } | |
13875 | ||
13876 | if (ext | |
13877 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
13878 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
13879 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
13880 | _("extended instruction in delay slot")); | |
13881 | ||
13882 | buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
13883 | ||
13884 | if (target_big_endian) | |
13885 | insn = bfd_getb16 (buf); | |
13886 | else | |
13887 | insn = bfd_getl16 (buf); | |
13888 | ||
13889 | mips16_immed (fragp->fr_file, fragp->fr_line, type, val, | |
13890 | RELAX_MIPS16_USER_EXT (fragp->fr_subtype), | |
13891 | small, ext, &insn, &use_extend, &extend); | |
13892 | ||
13893 | if (use_extend) | |
13894 | { | |
2132e3a3 | 13895 | md_number_to_chars ((char *) buf, 0xf000 | extend, 2); |
252b5132 RH |
13896 | fragp->fr_fix += 2; |
13897 | buf += 2; | |
13898 | } | |
13899 | ||
2132e3a3 | 13900 | md_number_to_chars ((char *) buf, insn, 2); |
252b5132 RH |
13901 | fragp->fr_fix += 2; |
13902 | buf += 2; | |
13903 | } | |
13904 | else | |
13905 | { | |
4d7206a2 RS |
13906 | int first, second; |
13907 | fixS *fixp; | |
252b5132 | 13908 | |
4d7206a2 RS |
13909 | first = RELAX_FIRST (fragp->fr_subtype); |
13910 | second = RELAX_SECOND (fragp->fr_subtype); | |
13911 | fixp = (fixS *) fragp->fr_opcode; | |
252b5132 | 13912 | |
584892a6 RS |
13913 | /* Possibly emit a warning if we've chosen the longer option. */ |
13914 | if (((fragp->fr_subtype & RELAX_USE_SECOND) != 0) | |
13915 | == ((fragp->fr_subtype & RELAX_SECOND_LONGER) != 0)) | |
13916 | { | |
13917 | const char *msg = macro_warning (fragp->fr_subtype); | |
13918 | if (msg != 0) | |
13919 | as_warn_where (fragp->fr_file, fragp->fr_line, msg); | |
13920 | } | |
13921 | ||
4d7206a2 RS |
13922 | /* Go through all the fixups for the first sequence. Disable them |
13923 | (by marking them as done) if we're going to use the second | |
13924 | sequence instead. */ | |
13925 | while (fixp | |
13926 | && fixp->fx_frag == fragp | |
13927 | && fixp->fx_where < fragp->fr_fix - second) | |
13928 | { | |
13929 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
13930 | fixp->fx_done = 1; | |
13931 | fixp = fixp->fx_next; | |
13932 | } | |
252b5132 | 13933 | |
4d7206a2 RS |
13934 | /* Go through the fixups for the second sequence. Disable them if |
13935 | we're going to use the first sequence, otherwise adjust their | |
13936 | addresses to account for the relaxation. */ | |
13937 | while (fixp && fixp->fx_frag == fragp) | |
13938 | { | |
13939 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
13940 | fixp->fx_where -= first; | |
13941 | else | |
13942 | fixp->fx_done = 1; | |
13943 | fixp = fixp->fx_next; | |
13944 | } | |
13945 | ||
13946 | /* Now modify the frag contents. */ | |
13947 | if (fragp->fr_subtype & RELAX_USE_SECOND) | |
13948 | { | |
13949 | char *start; | |
13950 | ||
13951 | start = fragp->fr_literal + fragp->fr_fix - first - second; | |
13952 | memmove (start, start + first, second); | |
13953 | fragp->fr_fix -= first; | |
13954 | } | |
13955 | else | |
13956 | fragp->fr_fix -= second; | |
252b5132 RH |
13957 | } |
13958 | } | |
13959 | ||
13960 | #ifdef OBJ_ELF | |
13961 | ||
13962 | /* This function is called after the relocs have been generated. | |
13963 | We've been storing mips16 text labels as odd. Here we convert them | |
13964 | back to even for the convenience of the debugger. */ | |
13965 | ||
13966 | void | |
17a2f251 | 13967 | mips_frob_file_after_relocs (void) |
252b5132 RH |
13968 | { |
13969 | asymbol **syms; | |
13970 | unsigned int count, i; | |
13971 | ||
13972 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
13973 | return; | |
13974 | ||
13975 | syms = bfd_get_outsymbols (stdoutput); | |
13976 | count = bfd_get_symcount (stdoutput); | |
13977 | for (i = 0; i < count; i++, syms++) | |
13978 | { | |
13979 | if (elf_symbol (*syms)->internal_elf_sym.st_other == STO_MIPS16 | |
13980 | && ((*syms)->value & 1) != 0) | |
13981 | { | |
13982 | (*syms)->value &= ~1; | |
13983 | /* If the symbol has an odd size, it was probably computed | |
13984 | incorrectly, so adjust that as well. */ | |
13985 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
13986 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
13987 | } | |
13988 | } | |
13989 | } | |
13990 | ||
13991 | #endif | |
13992 | ||
13993 | /* This function is called whenever a label is defined. It is used | |
13994 | when handling branch delays; if a branch has a label, we assume we | |
13995 | can not move it. */ | |
13996 | ||
13997 | void | |
17a2f251 | 13998 | mips_define_label (symbolS *sym) |
252b5132 RH |
13999 | { |
14000 | struct insn_label_list *l; | |
14001 | ||
14002 | if (free_insn_labels == NULL) | |
14003 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
14004 | else | |
14005 | { | |
14006 | l = free_insn_labels; | |
14007 | free_insn_labels = l->next; | |
14008 | } | |
14009 | ||
14010 | l->label = sym; | |
14011 | l->next = insn_labels; | |
14012 | insn_labels = l; | |
07a53e5c RH |
14013 | |
14014 | #ifdef OBJ_ELF | |
14015 | dwarf2_emit_label (sym); | |
14016 | #endif | |
252b5132 RH |
14017 | } |
14018 | \f | |
14019 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
14020 | ||
14021 | /* Some special processing for a MIPS ELF file. */ | |
14022 | ||
14023 | void | |
17a2f251 | 14024 | mips_elf_final_processing (void) |
252b5132 RH |
14025 | { |
14026 | /* Write out the register information. */ | |
316f5878 | 14027 | if (mips_abi != N64_ABI) |
252b5132 RH |
14028 | { |
14029 | Elf32_RegInfo s; | |
14030 | ||
14031 | s.ri_gprmask = mips_gprmask; | |
14032 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14033 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14034 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14035 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14036 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14037 | ||
14038 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
14039 | ((Elf32_External_RegInfo *) | |
14040 | mips_regmask_frag)); | |
14041 | } | |
14042 | else | |
14043 | { | |
14044 | Elf64_Internal_RegInfo s; | |
14045 | ||
14046 | s.ri_gprmask = mips_gprmask; | |
14047 | s.ri_pad = 0; | |
14048 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14049 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14050 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14051 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14052 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14053 | ||
14054 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
14055 | ((Elf64_External_RegInfo *) | |
14056 | mips_regmask_frag)); | |
14057 | } | |
14058 | ||
14059 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
14060 | sort of BFD interface for this. */ | |
14061 | if (mips_any_noreorder) | |
14062 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
14063 | if (mips_pic != NO_PIC) | |
143d77c5 | 14064 | { |
252b5132 | 14065 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; |
143d77c5 EC |
14066 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; |
14067 | } | |
14068 | if (mips_abicalls) | |
14069 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_CPIC; | |
252b5132 | 14070 | |
98d3f06f | 14071 | /* Set MIPS ELF flags for ASEs. */ |
74cd071d CF |
14072 | /* We may need to define a new flag for DSP ASE, and set this flag when |
14073 | file_ase_dsp is true. */ | |
ef2e4d86 CF |
14074 | /* We may need to define a new flag for MT ASE, and set this flag when |
14075 | file_ase_mt is true. */ | |
a4672219 TS |
14076 | if (file_ase_mips16) |
14077 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
1f25f5d3 CD |
14078 | #if 0 /* XXX FIXME */ |
14079 | if (file_ase_mips3d) | |
14080 | elf_elfheader (stdoutput)->e_flags |= ???; | |
14081 | #endif | |
deec1734 CD |
14082 | if (file_ase_mdmx) |
14083 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 14084 | |
bdaaa2e1 | 14085 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 14086 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 14087 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 14088 | else if (mips_abi == O64_ABI) |
252b5132 | 14089 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 14090 | else if (mips_abi == EABI_ABI) |
252b5132 | 14091 | { |
316f5878 | 14092 | if (!file_mips_gp32) |
252b5132 RH |
14093 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
14094 | else | |
14095 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
14096 | } | |
316f5878 | 14097 | else if (mips_abi == N32_ABI) |
be00bddd TS |
14098 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
14099 | ||
c9914766 | 14100 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
14101 | |
14102 | if (mips_32bitmode) | |
14103 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
ad3fea08 TS |
14104 | |
14105 | #if 0 /* XXX FIXME */ | |
14106 | /* 32 bit code with 64 bit FP registers. */ | |
14107 | if (!file_mips_fp32 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
14108 | elf_elfheader (stdoutput)->e_flags |= ???; | |
14109 | #endif | |
252b5132 RH |
14110 | } |
14111 | ||
14112 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
14113 | \f | |
beae10d5 | 14114 | typedef struct proc { |
9b2f1d35 EC |
14115 | symbolS *func_sym; |
14116 | symbolS *func_end_sym; | |
beae10d5 KH |
14117 | unsigned long reg_mask; |
14118 | unsigned long reg_offset; | |
14119 | unsigned long fpreg_mask; | |
14120 | unsigned long fpreg_offset; | |
14121 | unsigned long frame_offset; | |
14122 | unsigned long frame_reg; | |
14123 | unsigned long pc_reg; | |
14124 | } procS; | |
252b5132 RH |
14125 | |
14126 | static procS cur_proc; | |
14127 | static procS *cur_proc_ptr; | |
14128 | static int numprocs; | |
14129 | ||
0a9ef439 | 14130 | /* Fill in an rs_align_code fragment. */ |
a19d8eb0 | 14131 | |
0a9ef439 | 14132 | void |
17a2f251 | 14133 | mips_handle_align (fragS *fragp) |
a19d8eb0 | 14134 | { |
0a9ef439 RH |
14135 | if (fragp->fr_type != rs_align_code) |
14136 | return; | |
14137 | ||
14138 | if (mips_opts.mips16) | |
a19d8eb0 CP |
14139 | { |
14140 | static const unsigned char be_nop[] = { 0x65, 0x00 }; | |
14141 | static const unsigned char le_nop[] = { 0x00, 0x65 }; | |
14142 | ||
0a9ef439 RH |
14143 | int bytes; |
14144 | char *p; | |
a19d8eb0 | 14145 | |
0a9ef439 RH |
14146 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
14147 | p = fragp->fr_literal + fragp->fr_fix; | |
14148 | ||
14149 | if (bytes & 1) | |
14150 | { | |
14151 | *p++ = 0; | |
f9419b05 | 14152 | fragp->fr_fix++; |
0a9ef439 RH |
14153 | } |
14154 | ||
14155 | memcpy (p, (target_big_endian ? be_nop : le_nop), 2); | |
14156 | fragp->fr_var = 2; | |
a19d8eb0 CP |
14157 | } |
14158 | ||
0a9ef439 | 14159 | /* For mips32, a nop is a zero, which we trivially get by doing nothing. */ |
a19d8eb0 CP |
14160 | } |
14161 | ||
252b5132 | 14162 | static void |
17a2f251 | 14163 | md_obj_begin (void) |
252b5132 RH |
14164 | { |
14165 | } | |
14166 | ||
14167 | static void | |
17a2f251 | 14168 | md_obj_end (void) |
252b5132 RH |
14169 | { |
14170 | /* check for premature end, nesting errors, etc */ | |
14171 | if (cur_proc_ptr) | |
9a41af64 | 14172 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
14173 | } |
14174 | ||
14175 | static long | |
17a2f251 | 14176 | get_number (void) |
252b5132 RH |
14177 | { |
14178 | int negative = 0; | |
14179 | long val = 0; | |
14180 | ||
14181 | if (*input_line_pointer == '-') | |
14182 | { | |
14183 | ++input_line_pointer; | |
14184 | negative = 1; | |
14185 | } | |
3882b010 | 14186 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 14187 | as_bad (_("expected simple number")); |
252b5132 RH |
14188 | if (input_line_pointer[0] == '0') |
14189 | { | |
14190 | if (input_line_pointer[1] == 'x') | |
14191 | { | |
14192 | input_line_pointer += 2; | |
3882b010 | 14193 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
14194 | { |
14195 | val <<= 4; | |
14196 | val |= hex_value (*input_line_pointer++); | |
14197 | } | |
14198 | return negative ? -val : val; | |
14199 | } | |
14200 | else | |
14201 | { | |
14202 | ++input_line_pointer; | |
3882b010 | 14203 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14204 | { |
14205 | val <<= 3; | |
14206 | val |= *input_line_pointer++ - '0'; | |
14207 | } | |
14208 | return negative ? -val : val; | |
14209 | } | |
14210 | } | |
3882b010 | 14211 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14212 | { |
14213 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
14214 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 14215 | as_warn (_("invalid number")); |
252b5132 RH |
14216 | return -1; |
14217 | } | |
3882b010 | 14218 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14219 | { |
14220 | val *= 10; | |
14221 | val += *input_line_pointer++ - '0'; | |
14222 | } | |
14223 | return negative ? -val : val; | |
14224 | } | |
14225 | ||
14226 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
14227 | is an initial number which is the ECOFF file index. In the non-ECOFF |
14228 | case .file implies DWARF-2. */ | |
14229 | ||
14230 | static void | |
17a2f251 | 14231 | s_mips_file (int x ATTRIBUTE_UNUSED) |
c5dd6aab | 14232 | { |
ecb4347a DJ |
14233 | static int first_file_directive = 0; |
14234 | ||
c5dd6aab DJ |
14235 | if (ECOFF_DEBUGGING) |
14236 | { | |
14237 | get_number (); | |
14238 | s_app_file (0); | |
14239 | } | |
14240 | else | |
ecb4347a DJ |
14241 | { |
14242 | char *filename; | |
14243 | ||
14244 | filename = dwarf2_directive_file (0); | |
14245 | ||
14246 | /* Versions of GCC up to 3.1 start files with a ".file" | |
14247 | directive even for stabs output. Make sure that this | |
14248 | ".file" is handled. Note that you need a version of GCC | |
14249 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
14250 | if (filename != NULL && ! first_file_directive) | |
14251 | { | |
14252 | (void) new_logical_line (filename, -1); | |
c04f5787 | 14253 | s_app_file_string (filename, 0); |
ecb4347a DJ |
14254 | } |
14255 | first_file_directive = 1; | |
14256 | } | |
c5dd6aab DJ |
14257 | } |
14258 | ||
14259 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
14260 | |
14261 | static void | |
17a2f251 | 14262 | s_mips_loc (int x ATTRIBUTE_UNUSED) |
252b5132 | 14263 | { |
c5dd6aab DJ |
14264 | if (!ECOFF_DEBUGGING) |
14265 | dwarf2_directive_loc (0); | |
252b5132 RH |
14266 | } |
14267 | ||
252b5132 RH |
14268 | /* The .end directive. */ |
14269 | ||
14270 | static void | |
17a2f251 | 14271 | s_mips_end (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
14272 | { |
14273 | symbolS *p; | |
252b5132 | 14274 | |
7a621144 DJ |
14275 | /* Following functions need their own .frame and .cprestore directives. */ |
14276 | mips_frame_reg_valid = 0; | |
14277 | mips_cprestore_valid = 0; | |
14278 | ||
252b5132 RH |
14279 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
14280 | { | |
14281 | p = get_symbol (); | |
14282 | demand_empty_rest_of_line (); | |
14283 | } | |
14284 | else | |
14285 | p = NULL; | |
14286 | ||
14949570 | 14287 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
14288 | as_warn (_(".end not in text section")); |
14289 | ||
14290 | if (!cur_proc_ptr) | |
14291 | { | |
14292 | as_warn (_(".end directive without a preceding .ent directive.")); | |
14293 | demand_empty_rest_of_line (); | |
14294 | return; | |
14295 | } | |
14296 | ||
14297 | if (p != NULL) | |
14298 | { | |
14299 | assert (S_GET_NAME (p)); | |
9b2f1d35 | 14300 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->func_sym))) |
252b5132 | 14301 | as_warn (_(".end symbol does not match .ent symbol.")); |
ecb4347a DJ |
14302 | |
14303 | if (debug_type == DEBUG_STABS) | |
14304 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
14305 | S_GET_NAME (p)); | |
252b5132 RH |
14306 | } |
14307 | else | |
14308 | as_warn (_(".end directive missing or unknown symbol")); | |
14309 | ||
2132e3a3 | 14310 | #ifdef OBJ_ELF |
9b2f1d35 EC |
14311 | /* Create an expression to calculate the size of the function. */ |
14312 | if (p && cur_proc_ptr) | |
14313 | { | |
14314 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (p); | |
14315 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
14316 | ||
14317 | obj->size = exp; | |
14318 | exp->X_op = O_subtract; | |
14319 | exp->X_add_symbol = symbol_temp_new_now (); | |
14320 | exp->X_op_symbol = p; | |
14321 | exp->X_add_number = 0; | |
14322 | ||
14323 | cur_proc_ptr->func_end_sym = exp->X_add_symbol; | |
14324 | } | |
14325 | ||
ecb4347a | 14326 | /* Generate a .pdr section. */ |
dcd410fe RO |
14327 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING |
14328 | && mips_flag_pdr) | |
ecb4347a DJ |
14329 | { |
14330 | segT saved_seg = now_seg; | |
14331 | subsegT saved_subseg = now_subseg; | |
14332 | valueT dot; | |
14333 | expressionS exp; | |
14334 | char *fragp; | |
252b5132 | 14335 | |
ecb4347a | 14336 | dot = frag_now_fix (); |
252b5132 RH |
14337 | |
14338 | #ifdef md_flush_pending_output | |
ecb4347a | 14339 | md_flush_pending_output (); |
252b5132 RH |
14340 | #endif |
14341 | ||
ecb4347a DJ |
14342 | assert (pdr_seg); |
14343 | subseg_set (pdr_seg, 0); | |
252b5132 | 14344 | |
ecb4347a DJ |
14345 | /* Write the symbol. */ |
14346 | exp.X_op = O_symbol; | |
14347 | exp.X_add_symbol = p; | |
14348 | exp.X_add_number = 0; | |
14349 | emit_expr (&exp, 4); | |
252b5132 | 14350 | |
ecb4347a | 14351 | fragp = frag_more (7 * 4); |
252b5132 | 14352 | |
17a2f251 TS |
14353 | md_number_to_chars (fragp, cur_proc_ptr->reg_mask, 4); |
14354 | md_number_to_chars (fragp + 4, cur_proc_ptr->reg_offset, 4); | |
14355 | md_number_to_chars (fragp + 8, cur_proc_ptr->fpreg_mask, 4); | |
14356 | md_number_to_chars (fragp + 12, cur_proc_ptr->fpreg_offset, 4); | |
14357 | md_number_to_chars (fragp + 16, cur_proc_ptr->frame_offset, 4); | |
14358 | md_number_to_chars (fragp + 20, cur_proc_ptr->frame_reg, 4); | |
14359 | md_number_to_chars (fragp + 24, cur_proc_ptr->pc_reg, 4); | |
252b5132 | 14360 | |
ecb4347a DJ |
14361 | subseg_set (saved_seg, saved_subseg); |
14362 | } | |
14363 | #endif /* OBJ_ELF */ | |
252b5132 RH |
14364 | |
14365 | cur_proc_ptr = NULL; | |
14366 | } | |
14367 | ||
14368 | /* The .aent and .ent directives. */ | |
14369 | ||
14370 | static void | |
17a2f251 | 14371 | s_mips_ent (int aent) |
252b5132 | 14372 | { |
252b5132 | 14373 | symbolS *symbolP; |
252b5132 RH |
14374 | |
14375 | symbolP = get_symbol (); | |
14376 | if (*input_line_pointer == ',') | |
f9419b05 | 14377 | ++input_line_pointer; |
252b5132 | 14378 | SKIP_WHITESPACE (); |
3882b010 | 14379 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 14380 | || *input_line_pointer == '-') |
874e8986 | 14381 | get_number (); |
252b5132 | 14382 | |
14949570 | 14383 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
14384 | as_warn (_(".ent or .aent not in text section.")); |
14385 | ||
14386 | if (!aent && cur_proc_ptr) | |
9a41af64 | 14387 | as_warn (_("missing .end")); |
252b5132 RH |
14388 | |
14389 | if (!aent) | |
14390 | { | |
7a621144 DJ |
14391 | /* This function needs its own .frame and .cprestore directives. */ |
14392 | mips_frame_reg_valid = 0; | |
14393 | mips_cprestore_valid = 0; | |
14394 | ||
252b5132 RH |
14395 | cur_proc_ptr = &cur_proc; |
14396 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
14397 | ||
9b2f1d35 | 14398 | cur_proc_ptr->func_sym = symbolP; |
252b5132 | 14399 | |
49309057 | 14400 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
252b5132 | 14401 | |
f9419b05 | 14402 | ++numprocs; |
ecb4347a DJ |
14403 | |
14404 | if (debug_type == DEBUG_STABS) | |
14405 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
14406 | S_GET_NAME (symbolP)); | |
252b5132 RH |
14407 | } |
14408 | ||
14409 | demand_empty_rest_of_line (); | |
14410 | } | |
14411 | ||
14412 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 14413 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 14414 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 14415 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
14416 | symbol table (in the mdebug section). */ |
14417 | ||
14418 | static void | |
17a2f251 | 14419 | s_mips_frame (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 14420 | { |
ecb4347a DJ |
14421 | #ifdef OBJ_ELF |
14422 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
14423 | { | |
14424 | long val; | |
252b5132 | 14425 | |
ecb4347a DJ |
14426 | if (cur_proc_ptr == (procS *) NULL) |
14427 | { | |
14428 | as_warn (_(".frame outside of .ent")); | |
14429 | demand_empty_rest_of_line (); | |
14430 | return; | |
14431 | } | |
252b5132 | 14432 | |
ecb4347a DJ |
14433 | cur_proc_ptr->frame_reg = tc_get_register (1); |
14434 | ||
14435 | SKIP_WHITESPACE (); | |
14436 | if (*input_line_pointer++ != ',' | |
14437 | || get_absolute_expression_and_terminator (&val) != ',') | |
14438 | { | |
14439 | as_warn (_("Bad .frame directive")); | |
14440 | --input_line_pointer; | |
14441 | demand_empty_rest_of_line (); | |
14442 | return; | |
14443 | } | |
252b5132 | 14444 | |
ecb4347a DJ |
14445 | cur_proc_ptr->frame_offset = val; |
14446 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 14447 | |
252b5132 | 14448 | demand_empty_rest_of_line (); |
252b5132 | 14449 | } |
ecb4347a DJ |
14450 | else |
14451 | #endif /* OBJ_ELF */ | |
14452 | s_ignore (ignore); | |
252b5132 RH |
14453 | } |
14454 | ||
bdaaa2e1 KH |
14455 | /* The .fmask and .mask directives. If the mdebug section is present |
14456 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 14457 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 14458 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
14459 | make reference to the ecoff symbol table (in the mdebug section). */ |
14460 | ||
14461 | static void | |
17a2f251 | 14462 | s_mips_mask (int reg_type) |
252b5132 | 14463 | { |
ecb4347a DJ |
14464 | #ifdef OBJ_ELF |
14465 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
252b5132 | 14466 | { |
ecb4347a | 14467 | long mask, off; |
252b5132 | 14468 | |
ecb4347a DJ |
14469 | if (cur_proc_ptr == (procS *) NULL) |
14470 | { | |
14471 | as_warn (_(".mask/.fmask outside of .ent")); | |
14472 | demand_empty_rest_of_line (); | |
14473 | return; | |
14474 | } | |
252b5132 | 14475 | |
ecb4347a DJ |
14476 | if (get_absolute_expression_and_terminator (&mask) != ',') |
14477 | { | |
14478 | as_warn (_("Bad .mask/.fmask directive")); | |
14479 | --input_line_pointer; | |
14480 | demand_empty_rest_of_line (); | |
14481 | return; | |
14482 | } | |
252b5132 | 14483 | |
ecb4347a DJ |
14484 | off = get_absolute_expression (); |
14485 | ||
14486 | if (reg_type == 'F') | |
14487 | { | |
14488 | cur_proc_ptr->fpreg_mask = mask; | |
14489 | cur_proc_ptr->fpreg_offset = off; | |
14490 | } | |
14491 | else | |
14492 | { | |
14493 | cur_proc_ptr->reg_mask = mask; | |
14494 | cur_proc_ptr->reg_offset = off; | |
14495 | } | |
14496 | ||
14497 | demand_empty_rest_of_line (); | |
252b5132 RH |
14498 | } |
14499 | else | |
ecb4347a DJ |
14500 | #endif /* OBJ_ELF */ |
14501 | s_ignore (reg_type); | |
252b5132 RH |
14502 | } |
14503 | ||
316f5878 RS |
14504 | /* A table describing all the processors gas knows about. Names are |
14505 | matched in the order listed. | |
e7af610e | 14506 | |
316f5878 RS |
14507 | To ease comparison, please keep this table in the same order as |
14508 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
14509 | static const struct mips_cpu_info mips_cpu_info_table[] = |
14510 | { | |
316f5878 | 14511 | /* Entries for generic ISAs */ |
ad3fea08 TS |
14512 | { "mips1", MIPS_CPU_IS_ISA, ISA_MIPS1, CPU_R3000 }, |
14513 | { "mips2", MIPS_CPU_IS_ISA, ISA_MIPS2, CPU_R6000 }, | |
14514 | { "mips3", MIPS_CPU_IS_ISA, ISA_MIPS3, CPU_R4000 }, | |
14515 | { "mips4", MIPS_CPU_IS_ISA, ISA_MIPS4, CPU_R8000 }, | |
14516 | { "mips5", MIPS_CPU_IS_ISA, ISA_MIPS5, CPU_MIPS5 }, | |
14517 | { "mips32", MIPS_CPU_IS_ISA, ISA_MIPS32, CPU_MIPS32 }, | |
14518 | { "mips32r2", MIPS_CPU_IS_ISA, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14519 | { "mips64", MIPS_CPU_IS_ISA, ISA_MIPS64, CPU_MIPS64 }, | |
14520 | { "mips64r2", MIPS_CPU_IS_ISA, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
316f5878 RS |
14521 | |
14522 | /* MIPS I */ | |
ad3fea08 TS |
14523 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, |
14524 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
14525 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
316f5878 RS |
14526 | |
14527 | /* MIPS II */ | |
ad3fea08 | 14528 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, |
316f5878 RS |
14529 | |
14530 | /* MIPS III */ | |
ad3fea08 TS |
14531 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, |
14532 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
14533 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
14534 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
14535 | { "vr4120", 0, ISA_MIPS3, CPU_VR4120 }, | |
14536 | { "vr4130", 0, ISA_MIPS3, CPU_VR4120 }, | |
14537 | { "vr4181", 0, ISA_MIPS3, CPU_R4111 }, | |
14538 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, | |
14539 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
14540 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
14541 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
14542 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
316f5878 RS |
14543 | |
14544 | /* MIPS IV */ | |
ad3fea08 TS |
14545 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, |
14546 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
14547 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
14548 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, | |
14549 | { "vr5400", 0, ISA_MIPS4, CPU_VR5400 }, | |
14550 | { "vr5500", 0, ISA_MIPS4, CPU_VR5500 }, | |
14551 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, | |
14552 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
14553 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
14554 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
14555 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
14556 | { "rm7000", 0, ISA_MIPS4, CPU_RM7000 }, | |
14557 | { "rm9000", 0, ISA_MIPS4, CPU_RM9000 }, | |
316f5878 RS |
14558 | |
14559 | /* MIPS 32 */ | |
ad3fea08 TS |
14560 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32 }, |
14561 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
14562 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
14563 | { "4ksc", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32, CPU_MIPS32 }, | |
14564 | ||
14565 | /* MIPS 32 Release 2 */ | |
14566 | { "4kec", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14567 | { "4kem", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14568 | { "4kep", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14569 | { "4ksd", MIPS_CPU_ASE_SMARTMIPS, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14570 | { "m4k", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14571 | { "m4kp", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14572 | { "24k", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14573 | { "24kc", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14574 | { "24kf", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14575 | { "24kx", 0, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14576 | /* 24ke is a 24k with DSP ASE, other ASEs are optional. */ | |
14577 | { "24ke", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14578 | { "24kec", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14579 | { "24kef", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
65263ce3 | 14580 | { "24kex", MIPS_CPU_ASE_DSP, ISA_MIPS32R2, CPU_MIPS32R2 }, |
ad3fea08 TS |
14581 | /* 34k is a 24k with MT ASE, other ASEs are optional. */ |
14582 | { "34kc", MIPS_CPU_ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
14583 | { "34kf", MIPS_CPU_ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, | |
65263ce3 | 14584 | { "34kx", MIPS_CPU_ASE_MT, ISA_MIPS32R2, CPU_MIPS32R2 }, |
32b26a03 | 14585 | |
316f5878 | 14586 | /* MIPS 64 */ |
ad3fea08 TS |
14587 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, |
14588 | { "5kf", 0, ISA_MIPS64, CPU_MIPS64 }, | |
14589 | { "20kc", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64, CPU_MIPS64 }, | |
14590 | ||
14591 | /* MIPS 64 Release 2 */ | |
14592 | { "25kf", MIPS_CPU_ASE_MIPS3D, ISA_MIPS64R2, CPU_MIPS64R2 }, | |
e7af610e | 14593 | |
c7a23324 | 14594 | /* Broadcom SB-1 CPU core */ |
65263ce3 TS |
14595 | { "sb1", MIPS_CPU_ASE_MIPS3D | MIPS_CPU_ASE_MDMX, |
14596 | ISA_MIPS64, CPU_SB1 }, | |
e7af610e | 14597 | |
316f5878 RS |
14598 | /* End marker */ |
14599 | { NULL, 0, 0, 0 } | |
14600 | }; | |
e7af610e | 14601 | |
84ea6cf2 | 14602 | |
316f5878 RS |
14603 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
14604 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 14605 | |
316f5878 | 14606 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 14607 | |
b34976b6 | 14608 | static bfd_boolean |
17a2f251 | 14609 | mips_strict_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
14610 | { |
14611 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
14612 | given++, canonical++; | |
14613 | ||
14614 | return ((*given == 0 && *canonical == 0) | |
14615 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
14616 | } | |
14617 | ||
14618 | ||
14619 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
14620 | CPU name. We've traditionally allowed a lot of variation here. | |
14621 | ||
14622 | Note: this function is shared between GCC and GAS. */ | |
14623 | ||
b34976b6 | 14624 | static bfd_boolean |
17a2f251 | 14625 | mips_matching_cpu_name_p (const char *canonical, const char *given) |
316f5878 RS |
14626 | { |
14627 | /* First see if the name matches exactly, or with a final "000" | |
14628 | turned into "k". */ | |
14629 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 14630 | return TRUE; |
316f5878 RS |
14631 | |
14632 | /* If not, try comparing based on numerical designation alone. | |
14633 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
14634 | if (TOLOWER (*given) == 'r') | |
14635 | given++; | |
14636 | if (!ISDIGIT (*given)) | |
b34976b6 | 14637 | return FALSE; |
316f5878 RS |
14638 | |
14639 | /* Skip over some well-known prefixes in the canonical name, | |
14640 | hoping to find a number there too. */ | |
14641 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
14642 | canonical += 2; | |
14643 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
14644 | canonical += 2; | |
14645 | else if (TOLOWER (canonical[0]) == 'r') | |
14646 | canonical += 1; | |
14647 | ||
14648 | return mips_strict_matching_cpu_name_p (canonical, given); | |
14649 | } | |
14650 | ||
14651 | ||
14652 | /* Parse an option that takes the name of a processor as its argument. | |
14653 | OPTION is the name of the option and CPU_STRING is the argument. | |
14654 | Return the corresponding processor enumeration if the CPU_STRING is | |
14655 | recognized, otherwise report an error and return null. | |
14656 | ||
14657 | A similar function exists in GCC. */ | |
e7af610e NC |
14658 | |
14659 | static const struct mips_cpu_info * | |
17a2f251 | 14660 | mips_parse_cpu (const char *option, const char *cpu_string) |
e7af610e | 14661 | { |
316f5878 | 14662 | const struct mips_cpu_info *p; |
e7af610e | 14663 | |
316f5878 RS |
14664 | /* 'from-abi' selects the most compatible architecture for the given |
14665 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
14666 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
14667 | version. Look first at the -mgp options, if given, otherwise base | |
14668 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 14669 | |
316f5878 RS |
14670 | Treat NO_ABI like the EABIs. One reason to do this is that the |
14671 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
14672 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
14673 | 'mips64', just as we did in the days before 'from-abi'. */ | |
14674 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
14675 | { | |
14676 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
14677 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
14678 | ||
14679 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
14680 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
14681 | ||
14682 | if (file_mips_gp32 >= 0) | |
14683 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
14684 | ||
14685 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
14686 | ? ISA_MIPS3 | |
14687 | : ISA_MIPS1); | |
14688 | } | |
14689 | ||
14690 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
14691 | if (strcasecmp (cpu_string, "default") == 0) | |
14692 | return 0; | |
14693 | ||
14694 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
14695 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
14696 | return p; | |
14697 | ||
14698 | as_bad ("Bad value (%s) for %s", cpu_string, option); | |
14699 | return 0; | |
e7af610e NC |
14700 | } |
14701 | ||
316f5878 RS |
14702 | /* Return the canonical processor information for ISA (a member of the |
14703 | ISA_MIPS* enumeration). */ | |
14704 | ||
e7af610e | 14705 | static const struct mips_cpu_info * |
17a2f251 | 14706 | mips_cpu_info_from_isa (int isa) |
e7af610e NC |
14707 | { |
14708 | int i; | |
14709 | ||
14710 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
ad3fea08 | 14711 | if ((mips_cpu_info_table[i].flags & MIPS_CPU_IS_ISA) |
316f5878 | 14712 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
14713 | return (&mips_cpu_info_table[i]); |
14714 | ||
e972090a | 14715 | return NULL; |
e7af610e | 14716 | } |
fef14a42 TS |
14717 | |
14718 | static const struct mips_cpu_info * | |
17a2f251 | 14719 | mips_cpu_info_from_arch (int arch) |
fef14a42 TS |
14720 | { |
14721 | int i; | |
14722 | ||
14723 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
14724 | if (arch == mips_cpu_info_table[i].cpu) | |
14725 | return (&mips_cpu_info_table[i]); | |
14726 | ||
14727 | return NULL; | |
14728 | } | |
316f5878 RS |
14729 | \f |
14730 | static void | |
17a2f251 | 14731 | show (FILE *stream, const char *string, int *col_p, int *first_p) |
316f5878 RS |
14732 | { |
14733 | if (*first_p) | |
14734 | { | |
14735 | fprintf (stream, "%24s", ""); | |
14736 | *col_p = 24; | |
14737 | } | |
14738 | else | |
14739 | { | |
14740 | fprintf (stream, ", "); | |
14741 | *col_p += 2; | |
14742 | } | |
e7af610e | 14743 | |
316f5878 RS |
14744 | if (*col_p + strlen (string) > 72) |
14745 | { | |
14746 | fprintf (stream, "\n%24s", ""); | |
14747 | *col_p = 24; | |
14748 | } | |
14749 | ||
14750 | fprintf (stream, "%s", string); | |
14751 | *col_p += strlen (string); | |
14752 | ||
14753 | *first_p = 0; | |
14754 | } | |
14755 | ||
14756 | void | |
17a2f251 | 14757 | md_show_usage (FILE *stream) |
e7af610e | 14758 | { |
316f5878 RS |
14759 | int column, first; |
14760 | size_t i; | |
14761 | ||
14762 | fprintf (stream, _("\ | |
14763 | MIPS options:\n\ | |
316f5878 RS |
14764 | -EB generate big endian output\n\ |
14765 | -EL generate little endian output\n\ | |
14766 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
14767 | -G NUM allow referencing objects up to NUM bytes\n\ | |
14768 | implicitly with the gp register [default 8]\n")); | |
14769 | fprintf (stream, _("\ | |
14770 | -mips1 generate MIPS ISA I instructions\n\ | |
14771 | -mips2 generate MIPS ISA II instructions\n\ | |
14772 | -mips3 generate MIPS ISA III instructions\n\ | |
14773 | -mips4 generate MIPS ISA IV instructions\n\ | |
14774 | -mips5 generate MIPS ISA V instructions\n\ | |
14775 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 14776 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 | 14777 | -mips64 generate MIPS64 ISA instructions\n\ |
5f74bc13 | 14778 | -mips64r2 generate MIPS64 release 2 ISA instructions\n\ |
316f5878 RS |
14779 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); |
14780 | ||
14781 | first = 1; | |
e7af610e NC |
14782 | |
14783 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
14784 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
14785 | show (stream, "from-abi", &column, &first); | |
14786 | fputc ('\n', stream); | |
e7af610e | 14787 | |
316f5878 RS |
14788 | fprintf (stream, _("\ |
14789 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
14790 | -no-mCPU don't generate code specific to CPU.\n\ | |
14791 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
14792 | ||
14793 | first = 1; | |
14794 | ||
14795 | show (stream, "3900", &column, &first); | |
14796 | show (stream, "4010", &column, &first); | |
14797 | show (stream, "4100", &column, &first); | |
14798 | show (stream, "4650", &column, &first); | |
14799 | fputc ('\n', stream); | |
14800 | ||
14801 | fprintf (stream, _("\ | |
14802 | -mips16 generate mips16 instructions\n\ | |
14803 | -no-mips16 do not generate mips16 instructions\n")); | |
14804 | fprintf (stream, _("\ | |
e16bfa71 TS |
14805 | -msmartmips generate smartmips instructions\n\ |
14806 | -mno-smartmips do not generate smartmips instructions\n")); | |
14807 | fprintf (stream, _("\ | |
74cd071d CF |
14808 | -mdsp generate DSP instructions\n\ |
14809 | -mno-dsp do not generate DSP instructions\n")); | |
14810 | fprintf (stream, _("\ | |
ef2e4d86 CF |
14811 | -mmt generate MT instructions\n\ |
14812 | -mno-mt do not generate MT instructions\n")); | |
14813 | fprintf (stream, _("\ | |
d766e8ec | 14814 | -mfix-vr4120 work around certain VR4120 errata\n\ |
7d8e00cf | 14815 | -mfix-vr4130 work around VR4130 mflo/mfhi errata\n\ |
316f5878 RS |
14816 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ |
14817 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
aed1a261 RS |
14818 | -mno-shared optimize output for executables\n\ |
14819 | -msym32 assume all symbols have 32-bit values\n\ | |
316f5878 RS |
14820 | -O0 remove unneeded NOPs, do not swap branches\n\ |
14821 | -O remove unneeded NOPs and swap branches\n\ | |
316f5878 RS |
14822 | --[no-]construct-floats [dis]allow floating point values to be constructed\n\ |
14823 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ | |
14824 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
14825 | #ifdef OBJ_ELF | |
14826 | fprintf (stream, _("\ | |
14827 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
14828 | -non_shared do not generate position independent code\n\ | |
14829 | -xgot assume a 32 bit GOT\n\ | |
dcd410fe | 14830 | -mpdr, -mno-pdr enable/disable creation of .pdr sections\n\ |
bbe506e8 TS |
14831 | -mshared, -mno-shared disable/enable .cpload optimization for\n\ |
14832 | non-shared code\n\ | |
316f5878 RS |
14833 | -mabi=ABI create ABI conformant object file for:\n")); |
14834 | ||
14835 | first = 1; | |
14836 | ||
14837 | show (stream, "32", &column, &first); | |
14838 | show (stream, "o64", &column, &first); | |
14839 | show (stream, "n32", &column, &first); | |
14840 | show (stream, "64", &column, &first); | |
14841 | show (stream, "eabi", &column, &first); | |
14842 | ||
14843 | fputc ('\n', stream); | |
14844 | ||
14845 | fprintf (stream, _("\ | |
14846 | -32 create o32 ABI object file (default)\n\ | |
14847 | -n32 create n32 ABI object file\n\ | |
14848 | -64 create 64 ABI object file\n")); | |
14849 | #endif | |
e7af610e | 14850 | } |
14e777e0 KB |
14851 | |
14852 | enum dwarf2_format | |
17a2f251 | 14853 | mips_dwarf2_format (void) |
14e777e0 KB |
14854 | { |
14855 | if (mips_abi == N64_ABI) | |
1de5b6a1 AO |
14856 | { |
14857 | #ifdef TE_IRIX | |
14858 | return dwarf2_format_64bit_irix; | |
14859 | #else | |
14860 | return dwarf2_format_64bit; | |
14861 | #endif | |
14862 | } | |
14e777e0 KB |
14863 | else |
14864 | return dwarf2_format_32bit; | |
14865 | } | |
73369e65 EC |
14866 | |
14867 | int | |
14868 | mips_dwarf2_addr_size (void) | |
14869 | { | |
14870 | if (mips_abi == N64_ABI) | |
14871 | return 8; | |
73369e65 EC |
14872 | else |
14873 | return 4; | |
14874 | } | |
5862107c EC |
14875 | |
14876 | /* Standard calling conventions leave the CFA at SP on entry. */ | |
14877 | void | |
14878 | mips_cfi_frame_initial_instructions (void) | |
14879 | { | |
14880 | cfi_add_CFA_def_cfa_register (SP); | |
14881 | } | |
14882 | ||
707bfff6 TS |
14883 | int |
14884 | tc_mips_regname_to_dw2regnum (char *regname) | |
14885 | { | |
14886 | unsigned int regnum = -1; | |
14887 | unsigned int reg; | |
14888 | ||
14889 | if (reg_lookup (®name, RTYPE_GP | RTYPE_NUM, ®)) | |
14890 | regnum = reg; | |
14891 | ||
14892 | return regnum; | |
14893 | } |