Commit | Line | Data |
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252b5132 | 1 | /* Print mips instructions for GDB, the GNU debugger, or for objdump. |
060d22b0 NC |
2 | Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 | |
73da6b6b | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | Contributed by Nobuyuki Hikichi(hikichi@sra.co.jp). |
6 | ||
7 | This file is part of GDB, GAS, and the GNU binutils. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
252b5132 RH |
23 | #include "sysdep.h" |
24 | #include "dis-asm.h" | |
25 | #include "opcode/mips.h" | |
26 | #include "opintl.h" | |
27 | ||
28 | /* FIXME: These are needed to figure out if the code is mips16 or | |
29 | not. The low bit of the address is often a good indicator. No | |
30 | symbol table is available when this code runs out in an embedded | |
7f6621cd | 31 | system as when it is used for disassembler support in a monitor. */ |
252b5132 RH |
32 | |
33 | #if !defined(EMBEDDED_ENV) | |
34 | #define SYMTAB_AVAILABLE 1 | |
35 | #include "elf-bfd.h" | |
36 | #include "elf/mips.h" | |
37 | #endif | |
38 | ||
aa5f19f2 NC |
39 | /* Mips instructions are at maximum this many bytes long. */ |
40 | #define INSNLEN 4 | |
41 | ||
42 | static int _print_insn_mips | |
43 | PARAMS ((bfd_vma, struct disassemble_info *, enum bfd_endian)); | |
44 | static int print_insn_mips | |
45 | PARAMS ((bfd_vma, unsigned long int, struct disassemble_info *)); | |
46 | static void print_insn_arg | |
47 | PARAMS ((const char *, unsigned long, bfd_vma, struct disassemble_info *)); | |
7fa108a4 AJ |
48 | static void mips_isa_type |
49 | PARAMS ((int, int *, int *)); | |
aa5f19f2 NC |
50 | static int print_insn_mips16 |
51 | PARAMS ((bfd_vma, struct disassemble_info *)); | |
7fa108a4 AJ |
52 | static int is_newabi |
53 | PARAMS ((Elf_Internal_Ehdr *)); | |
252b5132 RH |
54 | static void print_mips16_insn_arg |
55 | PARAMS ((int, const struct mips_opcode *, int, boolean, int, bfd_vma, | |
56 | struct disassemble_info *)); | |
252b5132 | 57 | \f |
aa5f19f2 | 58 | /* FIXME: These should be shared with gdb somehow. */ |
252b5132 RH |
59 | |
60 | /* The mips16 register names. */ | |
7f6621cd | 61 | static const char * const mips16_reg_names[] = { |
252b5132 RH |
62 | "s0", "s1", "v0", "v1", "a0", "a1", "a2", "a3" |
63 | }; | |
fb48caed | 64 | |
7f6621cd | 65 | static const char * const mips32_reg_names[] = { |
aa5f19f2 NC |
66 | "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", |
67 | "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", | |
68 | "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", | |
69 | "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra", | |
70 | "sr", "lo", "hi", "bad", "cause", "pc", | |
71 | "fv0", "$f1", "fv1", "$f3", "ft0", "$f5", "ft1", "$f7", | |
72 | "ft2", "$f9", "ft3", "$f11", "fa0", "$f13", "fa1", "$f15", | |
73 | "ft4", "f17", "ft5", "f19", "fs0", "f21", "fs1", "f23", | |
74 | "fs2", "$f25", "fs3", "$f27", "fs4", "$f29", "fs5", "$f31", | |
75 | "fsr", "fir", "fp", "inx", "rand", "tlblo", "ctxt", "tlbhi", | |
76 | "epc", "prid" | |
77 | }; | |
78 | ||
7f6621cd | 79 | static const char * const mips64_reg_names[] = { |
aa5f19f2 NC |
80 | "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", |
81 | "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3", | |
82 | "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", | |
83 | "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra", | |
84 | "sr", "lo", "hi", "bad", "cause", "pc", | |
85 | "fv0", "$f1", "fv1", "$f3", "ft0", "ft1", "ft2", "ft3", | |
86 | "ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3", | |
87 | "fa4", "fa5", "fa6", "fa7", "ft8", "ft9", "ft10", "ft11", | |
88 | "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7", | |
89 | "fsr", "fir", "fp", "inx", "rand", "tlblo", "ctxt", "tlbhi", | |
90 | "epc", "prid" | |
91 | }; | |
92 | ||
93 | /* Scalar register names. _print_insn_mips() decides which register name | |
fb48caed | 94 | table to use. */ |
aa5f19f2 | 95 | static const char * const *reg_names = NULL; |
252b5132 | 96 | \f |
7f6621cd | 97 | /* Print insn arguments for 32/64-bit code. */ |
aa5f19f2 | 98 | |
252b5132 RH |
99 | static void |
100 | print_insn_arg (d, l, pc, info) | |
101 | const char *d; | |
102 | register unsigned long int l; | |
103 | bfd_vma pc; | |
104 | struct disassemble_info *info; | |
105 | { | |
106 | int delta; | |
107 | ||
108 | switch (*d) | |
109 | { | |
110 | case ',': | |
111 | case '(': | |
112 | case ')': | |
113 | (*info->fprintf_func) (info->stream, "%c", *d); | |
114 | break; | |
115 | ||
116 | case 's': | |
117 | case 'b': | |
118 | case 'r': | |
119 | case 'v': | |
aa5f19f2 | 120 | (*info->fprintf_func) (info->stream, "%s", |
252b5132 RH |
121 | reg_names[(l >> OP_SH_RS) & OP_MASK_RS]); |
122 | break; | |
123 | ||
124 | case 't': | |
125 | case 'w': | |
aa5f19f2 | 126 | (*info->fprintf_func) (info->stream, "%s", |
252b5132 RH |
127 | reg_names[(l >> OP_SH_RT) & OP_MASK_RT]); |
128 | break; | |
129 | ||
130 | case 'i': | |
131 | case 'u': | |
132 | (*info->fprintf_func) (info->stream, "0x%x", | |
7f6621cd | 133 | (l >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE); |
252b5132 RH |
134 | break; |
135 | ||
7f6621cd | 136 | case 'j': /* Same as i, but sign-extended. */ |
252b5132 RH |
137 | case 'o': |
138 | delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA; | |
139 | if (delta & 0x8000) | |
140 | delta |= ~0xffff; | |
141 | (*info->fprintf_func) (info->stream, "%d", | |
142 | delta); | |
143 | break; | |
144 | ||
145 | case 'h': | |
146 | (*info->fprintf_func) (info->stream, "0x%x", | |
147 | (unsigned int) ((l >> OP_SH_PREFX) | |
148 | & OP_MASK_PREFX)); | |
149 | break; | |
150 | ||
151 | case 'k': | |
152 | (*info->fprintf_func) (info->stream, "0x%x", | |
153 | (unsigned int) ((l >> OP_SH_CACHE) | |
154 | & OP_MASK_CACHE)); | |
155 | break; | |
156 | ||
157 | case 'a': | |
158 | (*info->print_address_func) | |
7f6621cd | 159 | ((((pc + 4) & ~(bfd_vma) 0x0fffffff) |
73da6b6b | 160 | | (((l >> OP_SH_TARGET) & OP_MASK_TARGET) << 2)), |
252b5132 RH |
161 | info); |
162 | break; | |
163 | ||
164 | case 'p': | |
7f6621cd | 165 | /* Sign extend the displacement. */ |
252b5132 RH |
166 | delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA; |
167 | if (delta & 0x8000) | |
168 | delta |= ~0xffff; | |
169 | (*info->print_address_func) | |
aa5f19f2 | 170 | ((delta << 2) + pc + INSNLEN, |
252b5132 RH |
171 | info); |
172 | break; | |
173 | ||
174 | case 'd': | |
aa5f19f2 | 175 | (*info->fprintf_func) (info->stream, "%s", |
252b5132 RH |
176 | reg_names[(l >> OP_SH_RD) & OP_MASK_RD]); |
177 | break; | |
178 | ||
4372b673 NC |
179 | case 'U': |
180 | { | |
7f6621cd KH |
181 | /* First check for both rd and rt being equal. */ |
182 | unsigned int reg = (l >> OP_SH_RD) & OP_MASK_RD; | |
183 | if (reg == ((l >> OP_SH_RT) & OP_MASK_RT)) | |
184 | (*info->fprintf_func) (info->stream, "%s", | |
185 | reg_names[reg]); | |
186 | else | |
187 | { | |
188 | /* If one is zero use the other. */ | |
189 | if (reg == 0) | |
190 | (*info->fprintf_func) (info->stream, "%s", | |
191 | reg_names[(l >> OP_SH_RT) & OP_MASK_RT]); | |
192 | else if (((l >> OP_SH_RT) & OP_MASK_RT) == 0) | |
193 | (*info->fprintf_func) (info->stream, "%s", | |
194 | reg_names[reg]); | |
195 | else /* Bogus, result depends on processor. */ | |
196 | (*info->fprintf_func) (info->stream, "%s or %s", | |
197 | reg_names[reg], | |
198 | reg_names[(l >> OP_SH_RT) & OP_MASK_RT]); | |
199 | } | |
4372b673 NC |
200 | } |
201 | break; | |
202 | ||
252b5132 | 203 | case 'z': |
aa5f19f2 | 204 | (*info->fprintf_func) (info->stream, "%s", reg_names[0]); |
252b5132 RH |
205 | break; |
206 | ||
207 | case '<': | |
208 | (*info->fprintf_func) (info->stream, "0x%x", | |
209 | (l >> OP_SH_SHAMT) & OP_MASK_SHAMT); | |
210 | break; | |
211 | ||
212 | case 'c': | |
213 | (*info->fprintf_func) (info->stream, "0x%x", | |
214 | (l >> OP_SH_CODE) & OP_MASK_CODE); | |
215 | break; | |
216 | ||
252b5132 RH |
217 | case 'q': |
218 | (*info->fprintf_func) (info->stream, "0x%x", | |
219 | (l >> OP_SH_CODE2) & OP_MASK_CODE2); | |
220 | break; | |
221 | ||
222 | case 'C': | |
223 | (*info->fprintf_func) (info->stream, "0x%x", | |
224 | (l >> OP_SH_COPZ) & OP_MASK_COPZ); | |
225 | break; | |
226 | ||
227 | case 'B': | |
228 | (*info->fprintf_func) (info->stream, "0x%x", | |
4372b673 NC |
229 | (l >> OP_SH_CODE20) & OP_MASK_CODE20); |
230 | break; | |
231 | ||
232 | case 'J': | |
233 | (*info->fprintf_func) (info->stream, "0x%x", | |
234 | (l >> OP_SH_CODE19) & OP_MASK_CODE19); | |
252b5132 RH |
235 | break; |
236 | ||
237 | case 'S': | |
238 | case 'V': | |
239 | (*info->fprintf_func) (info->stream, "$f%d", | |
240 | (l >> OP_SH_FS) & OP_MASK_FS); | |
241 | break; | |
242 | ||
252b5132 RH |
243 | case 'T': |
244 | case 'W': | |
245 | (*info->fprintf_func) (info->stream, "$f%d", | |
246 | (l >> OP_SH_FT) & OP_MASK_FT); | |
247 | break; | |
248 | ||
249 | case 'D': | |
250 | (*info->fprintf_func) (info->stream, "$f%d", | |
251 | (l >> OP_SH_FD) & OP_MASK_FD); | |
252 | break; | |
253 | ||
254 | case 'R': | |
255 | (*info->fprintf_func) (info->stream, "$f%d", | |
256 | (l >> OP_SH_FR) & OP_MASK_FR); | |
257 | break; | |
258 | ||
259 | case 'E': | |
21d34b1c TS |
260 | (*info->fprintf_func) (info->stream, "$%d", |
261 | (l >> OP_SH_RT) & OP_MASK_RT); | |
252b5132 RH |
262 | break; |
263 | ||
264 | case 'G': | |
21d34b1c TS |
265 | (*info->fprintf_func) (info->stream, "$%d", |
266 | (l >> OP_SH_RD) & OP_MASK_RD); | |
252b5132 RH |
267 | break; |
268 | ||
269 | case 'N': | |
270 | (*info->fprintf_func) (info->stream, "$fcc%d", | |
271 | (l >> OP_SH_BCC) & OP_MASK_BCC); | |
272 | break; | |
273 | ||
274 | case 'M': | |
275 | (*info->fprintf_func) (info->stream, "$fcc%d", | |
276 | (l >> OP_SH_CCC) & OP_MASK_CCC); | |
277 | break; | |
278 | ||
279 | case 'P': | |
280 | (*info->fprintf_func) (info->stream, "%d", | |
281 | (l >> OP_SH_PERFREG) & OP_MASK_PERFREG); | |
282 | break; | |
283 | ||
156c2f8b | 284 | case 'H': |
e93d7199 | 285 | (*info->fprintf_func) (info->stream, "%d", |
156c2f8b NC |
286 | (l >> OP_SH_SEL) & OP_MASK_SEL); |
287 | break; | |
252b5132 RH |
288 | |
289 | default: | |
290 | /* xgettext:c-format */ | |
291 | (*info->fprintf_func) (info->stream, | |
292 | _("# internal error, undefined modifier(%c)"), | |
293 | *d); | |
294 | break; | |
295 | } | |
296 | } | |
297 | \f | |
7f6621cd | 298 | /* Figure out the MIPS ISA and CPU based on the machine number. */ |
252b5132 RH |
299 | |
300 | static void | |
aa5f19f2 | 301 | mips_isa_type (mach, isa, cputype) |
252b5132 RH |
302 | int mach; |
303 | int *isa; | |
304 | int *cputype; | |
305 | { | |
252b5132 RH |
306 | switch (mach) |
307 | { | |
156c2f8b | 308 | case bfd_mach_mips3000: |
aa5f19f2 NC |
309 | *cputype = CPU_R3000; |
310 | *isa = ISA_MIPS1; | |
156c2f8b NC |
311 | break; |
312 | case bfd_mach_mips3900: | |
aa5f19f2 NC |
313 | *cputype = CPU_R3900; |
314 | *isa = ISA_MIPS1; | |
156c2f8b NC |
315 | break; |
316 | case bfd_mach_mips4000: | |
aa5f19f2 NC |
317 | *cputype = CPU_R4000; |
318 | *isa = ISA_MIPS3; | |
156c2f8b NC |
319 | break; |
320 | case bfd_mach_mips4010: | |
aa5f19f2 NC |
321 | *cputype = CPU_R4010; |
322 | *isa = ISA_MIPS2; | |
156c2f8b NC |
323 | break; |
324 | case bfd_mach_mips4100: | |
aa5f19f2 NC |
325 | *cputype = CPU_VR4100; |
326 | *isa = ISA_MIPS3; | |
156c2f8b NC |
327 | break; |
328 | case bfd_mach_mips4111: | |
aa5f19f2 NC |
329 | *cputype = CPU_R4111; |
330 | *isa = ISA_MIPS3; | |
156c2f8b NC |
331 | break; |
332 | case bfd_mach_mips4300: | |
aa5f19f2 NC |
333 | *cputype = CPU_R4300; |
334 | *isa = ISA_MIPS3; | |
156c2f8b NC |
335 | break; |
336 | case bfd_mach_mips4400: | |
aa5f19f2 NC |
337 | *cputype = CPU_R4400; |
338 | *isa = ISA_MIPS3; | |
156c2f8b NC |
339 | break; |
340 | case bfd_mach_mips4600: | |
aa5f19f2 NC |
341 | *cputype = CPU_R4600; |
342 | *isa = ISA_MIPS3; | |
156c2f8b NC |
343 | break; |
344 | case bfd_mach_mips4650: | |
aa5f19f2 NC |
345 | *cputype = CPU_R4650; |
346 | *isa = ISA_MIPS3; | |
156c2f8b NC |
347 | break; |
348 | case bfd_mach_mips5000: | |
aa5f19f2 NC |
349 | *cputype = CPU_R5000; |
350 | *isa = ISA_MIPS4; | |
156c2f8b NC |
351 | break; |
352 | case bfd_mach_mips6000: | |
aa5f19f2 NC |
353 | *cputype = CPU_R6000; |
354 | *isa = ISA_MIPS2; | |
156c2f8b NC |
355 | break; |
356 | case bfd_mach_mips8000: | |
aa5f19f2 NC |
357 | *cputype = CPU_R8000; |
358 | *isa = ISA_MIPS4; | |
156c2f8b NC |
359 | break; |
360 | case bfd_mach_mips10000: | |
aa5f19f2 NC |
361 | *cputype = CPU_R10000; |
362 | *isa = ISA_MIPS4; | |
156c2f8b | 363 | break; |
d1cf510e NC |
364 | case bfd_mach_mips12000: |
365 | *cputype = CPU_R12000; | |
366 | *isa = ISA_MIPS4; | |
367 | break; | |
156c2f8b | 368 | case bfd_mach_mips16: |
aa5f19f2 NC |
369 | *cputype = CPU_MIPS16; |
370 | *isa = ISA_MIPS3; | |
e7af610e NC |
371 | break; |
372 | case bfd_mach_mips32: | |
aa5f19f2 NC |
373 | *cputype = CPU_MIPS32; |
374 | *isa = ISA_MIPS32; | |
e7af610e NC |
375 | break; |
376 | case bfd_mach_mips32_4k: | |
aa5f19f2 NC |
377 | *cputype = CPU_MIPS32_4K; |
378 | *isa = ISA_MIPS32; | |
156c2f8b | 379 | break; |
84ea6cf2 | 380 | case bfd_mach_mips5: |
aa5f19f2 NC |
381 | *cputype = CPU_MIPS5; |
382 | *isa = ISA_MIPS5; | |
84ea6cf2 NC |
383 | break; |
384 | case bfd_mach_mips64: | |
aa5f19f2 NC |
385 | *cputype = CPU_MIPS64; |
386 | *isa = ISA_MIPS64; | |
84ea6cf2 | 387 | break; |
c6c98b38 | 388 | case bfd_mach_mips_sb1: |
aa5f19f2 NC |
389 | *cputype = CPU_SB1; |
390 | *isa = ISA_MIPS64; | |
c6c98b38 | 391 | break; |
156c2f8b | 392 | default: |
aa5f19f2 NC |
393 | *cputype = CPU_R3000; |
394 | *isa = ISA_MIPS3; | |
156c2f8b | 395 | break; |
252b5132 | 396 | } |
252b5132 RH |
397 | } |
398 | ||
21d34b1c | 399 | /* Check if the object uses NewABI conventions. */ |
aa5f19f2 NC |
400 | |
401 | static int | |
7f6621cd | 402 | is_newabi (header) |
21d34b1c | 403 | Elf_Internal_Ehdr *header; |
aa5f19f2 | 404 | { |
21d34b1c TS |
405 | if ((header->e_flags |
406 | & (E_MIPS_ABI_EABI32 | E_MIPS_ABI_EABI64 | EF_MIPS_ABI2)) != 0 | |
407 | || (header->e_ident[EI_CLASS] == ELFCLASS64 | |
408 | && (header->e_flags & E_MIPS_ABI_O64) == 0)) | |
409 | return 1; | |
252b5132 | 410 | |
21d34b1c | 411 | return 0; |
aa5f19f2 NC |
412 | } |
413 | \f | |
252b5132 RH |
414 | /* Print the mips instruction at address MEMADDR in debugged memory, |
415 | on using INFO. Returns length of the instruction, in bytes, which is | |
aa5f19f2 | 416 | always INSNLEN. BIGENDIAN must be 1 if this is big-endian code, 0 if |
252b5132 RH |
417 | this is little-endian code. */ |
418 | ||
419 | static int | |
aa5f19f2 | 420 | print_insn_mips (memaddr, word, info) |
252b5132 RH |
421 | bfd_vma memaddr; |
422 | unsigned long int word; | |
423 | struct disassemble_info *info; | |
424 | { | |
425 | register const struct mips_opcode *op; | |
426 | int target_processor, mips_isa; | |
427 | static boolean init = 0; | |
428 | static const struct mips_opcode *mips_hash[OP_MASK_OP + 1]; | |
429 | ||
430 | /* Build a hash table to shorten the search time. */ | |
431 | if (! init) | |
432 | { | |
433 | unsigned int i; | |
434 | ||
435 | for (i = 0; i <= OP_MASK_OP; i++) | |
436 | { | |
437 | for (op = mips_opcodes; op < &mips_opcodes[NUMOPCODES]; op++) | |
438 | { | |
439 | if (op->pinfo == INSN_MACRO) | |
440 | continue; | |
441 | if (i == ((op->match >> OP_SH_OP) & OP_MASK_OP)) | |
442 | { | |
443 | mips_hash[i] = op; | |
444 | break; | |
445 | } | |
446 | } | |
7f6621cd | 447 | } |
252b5132 RH |
448 | |
449 | init = 1; | |
450 | } | |
451 | ||
452 | #if ! SYMTAB_AVAILABLE | |
453 | /* This is running out on a target machine, not in a host tool. | |
454 | FIXME: Where does mips_target_info come from? */ | |
455 | target_processor = mips_target_info.processor; | |
456 | mips_isa = mips_target_info.isa; | |
e93d7199 | 457 | #else |
aa5f19f2 | 458 | mips_isa_type (info->mach, &mips_isa, &target_processor); |
e93d7199 | 459 | #endif |
252b5132 | 460 | |
aa5f19f2 | 461 | info->bytes_per_chunk = INSNLEN; |
252b5132 RH |
462 | info->display_endian = info->endian; |
463 | ||
464 | op = mips_hash[(word >> OP_SH_OP) & OP_MASK_OP]; | |
465 | if (op != NULL) | |
466 | { | |
467 | for (; op < &mips_opcodes[NUMOPCODES]; op++) | |
468 | { | |
469 | if (op->pinfo != INSN_MACRO && (word & op->mask) == op->match) | |
470 | { | |
471 | register const char *d; | |
2bd7f1f3 | 472 | |
d98bb281 | 473 | if (! OPCODE_IS_MEMBER (op, mips_isa, target_processor)) |
252b5132 RH |
474 | continue; |
475 | ||
476 | (*info->fprintf_func) (info->stream, "%s", op->name); | |
477 | ||
478 | d = op->args; | |
479 | if (d != NULL && *d != '\0') | |
480 | { | |
7f6621cd | 481 | (*info->fprintf_func) (info->stream, "\t"); |
252b5132 | 482 | for (; *d != '\0'; d++) |
7f6621cd | 483 | print_insn_arg (d, word, memaddr, info); |
252b5132 RH |
484 | } |
485 | ||
aa5f19f2 | 486 | return INSNLEN; |
252b5132 RH |
487 | } |
488 | } | |
489 | } | |
490 | ||
491 | /* Handle undefined instructions. */ | |
492 | (*info->fprintf_func) (info->stream, "0x%x", word); | |
aa5f19f2 | 493 | return INSNLEN; |
252b5132 | 494 | } |
aa5f19f2 | 495 | \f |
252b5132 RH |
496 | /* In an environment where we do not know the symbol type of the |
497 | instruction we are forced to assume that the low order bit of the | |
498 | instructions' address may mark it as a mips16 instruction. If we | |
499 | are single stepping, or the pc is within the disassembled function, | |
500 | this works. Otherwise, we need a clue. Sometimes. */ | |
501 | ||
aa5f19f2 NC |
502 | static int |
503 | _print_insn_mips (memaddr, info, endianness) | |
252b5132 RH |
504 | bfd_vma memaddr; |
505 | struct disassemble_info *info; | |
aa5f19f2 | 506 | enum bfd_endian endianness; |
252b5132 | 507 | { |
aa5f19f2 | 508 | bfd_byte buffer[INSNLEN]; |
252b5132 RH |
509 | int status; |
510 | ||
511 | #if 1 | |
512 | /* FIXME: If odd address, this is CLEARLY a mips 16 instruction. */ | |
513 | /* Only a few tools will work this way. */ | |
514 | if (memaddr & 0x01) | |
515 | return print_insn_mips16 (memaddr, info); | |
e93d7199 | 516 | #endif |
252b5132 RH |
517 | |
518 | #if SYMTAB_AVAILABLE | |
519 | if (info->mach == 16 | |
520 | || (info->flavour == bfd_target_elf_flavour | |
521 | && info->symbols != NULL | |
522 | && ((*(elf_symbol_type **) info->symbols)->internal_elf_sym.st_other | |
523 | == STO_MIPS16))) | |
524 | return print_insn_mips16 (memaddr, info); | |
e93d7199 | 525 | #endif |
252b5132 | 526 | |
aa5f19f2 | 527 | /* Use mips64_reg_names for new ABI. */ |
21d34b1c TS |
528 | reg_names = mips32_reg_names; |
529 | ||
530 | if (info->flavour == bfd_target_elf_flavour && info->symbols != NULL) | |
531 | { | |
532 | Elf_Internal_Ehdr *header; | |
533 | ||
7f6621cd KH |
534 | header = elf_elfheader (bfd_asymbol_bfd (*(info->symbols))); |
535 | if (is_newabi (header)) | |
21d34b1c TS |
536 | reg_names = mips64_reg_names; |
537 | } | |
aa5f19f2 NC |
538 | |
539 | status = (*info->read_memory_func) (memaddr, buffer, INSNLEN, info); | |
252b5132 | 540 | if (status == 0) |
aa5f19f2 NC |
541 | { |
542 | unsigned long insn; | |
543 | ||
544 | if (endianness == BFD_ENDIAN_BIG) | |
7f6621cd | 545 | insn = (unsigned long) bfd_getb32 (buffer); |
aa5f19f2 NC |
546 | else |
547 | insn = (unsigned long) bfd_getl32 (buffer); | |
548 | ||
549 | return print_insn_mips (memaddr, insn, info); | |
550 | } | |
252b5132 RH |
551 | else |
552 | { | |
553 | (*info->memory_error_func) (status, memaddr, info); | |
554 | return -1; | |
555 | } | |
556 | } | |
557 | ||
558 | int | |
aa5f19f2 | 559 | print_insn_big_mips (memaddr, info) |
252b5132 RH |
560 | bfd_vma memaddr; |
561 | struct disassemble_info *info; | |
562 | { | |
aa5f19f2 NC |
563 | return _print_insn_mips (memaddr, info, BFD_ENDIAN_BIG); |
564 | } | |
252b5132 | 565 | |
aa5f19f2 NC |
566 | int |
567 | print_insn_little_mips (memaddr, info) | |
568 | bfd_vma memaddr; | |
569 | struct disassemble_info *info; | |
570 | { | |
571 | return _print_insn_mips (memaddr, info, BFD_ENDIAN_LITTLE); | |
252b5132 RH |
572 | } |
573 | \f | |
574 | /* Disassemble mips16 instructions. */ | |
575 | ||
576 | static int | |
577 | print_insn_mips16 (memaddr, info) | |
578 | bfd_vma memaddr; | |
579 | struct disassemble_info *info; | |
580 | { | |
581 | int status; | |
582 | bfd_byte buffer[2]; | |
583 | int length; | |
584 | int insn; | |
585 | boolean use_extend; | |
586 | int extend = 0; | |
587 | const struct mips_opcode *op, *opend; | |
588 | ||
589 | info->bytes_per_chunk = 2; | |
590 | info->display_endian = info->endian; | |
252b5132 RH |
591 | info->insn_info_valid = 1; |
592 | info->branch_delay_insns = 0; | |
593 | info->data_size = 0; | |
594 | info->insn_type = dis_nonbranch; | |
595 | info->target = 0; | |
596 | info->target2 = 0; | |
597 | ||
598 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); | |
599 | if (status != 0) | |
600 | { | |
601 | (*info->memory_error_func) (status, memaddr, info); | |
602 | return -1; | |
603 | } | |
604 | ||
605 | length = 2; | |
606 | ||
607 | if (info->endian == BFD_ENDIAN_BIG) | |
608 | insn = bfd_getb16 (buffer); | |
609 | else | |
610 | insn = bfd_getl16 (buffer); | |
611 | ||
612 | /* Handle the extend opcode specially. */ | |
613 | use_extend = false; | |
614 | if ((insn & 0xf800) == 0xf000) | |
615 | { | |
616 | use_extend = true; | |
617 | extend = insn & 0x7ff; | |
618 | ||
619 | memaddr += 2; | |
620 | ||
621 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); | |
622 | if (status != 0) | |
623 | { | |
624 | (*info->fprintf_func) (info->stream, "extend 0x%x", | |
625 | (unsigned int) extend); | |
626 | (*info->memory_error_func) (status, memaddr, info); | |
627 | return -1; | |
628 | } | |
629 | ||
630 | if (info->endian == BFD_ENDIAN_BIG) | |
631 | insn = bfd_getb16 (buffer); | |
632 | else | |
633 | insn = bfd_getl16 (buffer); | |
634 | ||
635 | /* Check for an extend opcode followed by an extend opcode. */ | |
636 | if ((insn & 0xf800) == 0xf000) | |
637 | { | |
638 | (*info->fprintf_func) (info->stream, "extend 0x%x", | |
639 | (unsigned int) extend); | |
640 | info->insn_type = dis_noninsn; | |
641 | return length; | |
642 | } | |
643 | ||
644 | length += 2; | |
645 | } | |
646 | ||
647 | /* FIXME: Should probably use a hash table on the major opcode here. */ | |
648 | ||
649 | opend = mips16_opcodes + bfd_mips16_num_opcodes; | |
650 | for (op = mips16_opcodes; op < opend; op++) | |
651 | { | |
652 | if (op->pinfo != INSN_MACRO && (insn & op->mask) == op->match) | |
653 | { | |
654 | const char *s; | |
655 | ||
656 | if (strchr (op->args, 'a') != NULL) | |
657 | { | |
658 | if (use_extend) | |
659 | { | |
660 | (*info->fprintf_func) (info->stream, "extend 0x%x", | |
661 | (unsigned int) extend); | |
662 | info->insn_type = dis_noninsn; | |
663 | return length - 2; | |
664 | } | |
665 | ||
666 | use_extend = false; | |
667 | ||
668 | memaddr += 2; | |
669 | ||
670 | status = (*info->read_memory_func) (memaddr, buffer, 2, | |
671 | info); | |
672 | if (status == 0) | |
673 | { | |
674 | use_extend = true; | |
675 | if (info->endian == BFD_ENDIAN_BIG) | |
676 | extend = bfd_getb16 (buffer); | |
677 | else | |
678 | extend = bfd_getl16 (buffer); | |
679 | length += 2; | |
680 | } | |
681 | } | |
682 | ||
683 | (*info->fprintf_func) (info->stream, "%s", op->name); | |
684 | if (op->args[0] != '\0') | |
685 | (*info->fprintf_func) (info->stream, "\t"); | |
686 | ||
687 | for (s = op->args; *s != '\0'; s++) | |
688 | { | |
689 | if (*s == ',' | |
690 | && s[1] == 'w' | |
691 | && (((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX) | |
692 | == ((insn >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY))) | |
693 | { | |
694 | /* Skip the register and the comma. */ | |
695 | ++s; | |
696 | continue; | |
697 | } | |
698 | if (*s == ',' | |
699 | && s[1] == 'v' | |
700 | && (((insn >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ) | |
701 | == ((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX))) | |
702 | { | |
703 | /* Skip the register and the comma. */ | |
704 | ++s; | |
705 | continue; | |
706 | } | |
707 | print_mips16_insn_arg (*s, op, insn, use_extend, extend, memaddr, | |
708 | info); | |
709 | } | |
710 | ||
711 | if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) | |
712 | { | |
713 | info->branch_delay_insns = 1; | |
714 | if (info->insn_type != dis_jsr) | |
715 | info->insn_type = dis_branch; | |
716 | } | |
717 | ||
718 | return length; | |
719 | } | |
720 | } | |
721 | ||
722 | if (use_extend) | |
723 | (*info->fprintf_func) (info->stream, "0x%x", extend | 0xf000); | |
724 | (*info->fprintf_func) (info->stream, "0x%x", insn); | |
725 | info->insn_type = dis_noninsn; | |
726 | ||
727 | return length; | |
728 | } | |
729 | ||
730 | /* Disassemble an operand for a mips16 instruction. */ | |
731 | ||
732 | static void | |
733 | print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) | |
aa5f19f2 | 734 | char type; |
252b5132 RH |
735 | const struct mips_opcode *op; |
736 | int l; | |
737 | boolean use_extend; | |
738 | int extend; | |
739 | bfd_vma memaddr; | |
740 | struct disassemble_info *info; | |
741 | { | |
742 | switch (type) | |
743 | { | |
744 | case ',': | |
745 | case '(': | |
746 | case ')': | |
747 | (*info->fprintf_func) (info->stream, "%c", type); | |
748 | break; | |
749 | ||
750 | case 'y': | |
751 | case 'w': | |
aa5f19f2 | 752 | (*info->fprintf_func) (info->stream, "%s", |
252b5132 RH |
753 | mips16_reg_names[((l >> MIPS16OP_SH_RY) |
754 | & MIPS16OP_MASK_RY)]); | |
755 | break; | |
756 | ||
757 | case 'x': | |
758 | case 'v': | |
aa5f19f2 | 759 | (*info->fprintf_func) (info->stream, "%s", |
252b5132 RH |
760 | mips16_reg_names[((l >> MIPS16OP_SH_RX) |
761 | & MIPS16OP_MASK_RX)]); | |
762 | break; | |
763 | ||
764 | case 'z': | |
aa5f19f2 | 765 | (*info->fprintf_func) (info->stream, "%s", |
252b5132 RH |
766 | mips16_reg_names[((l >> MIPS16OP_SH_RZ) |
767 | & MIPS16OP_MASK_RZ)]); | |
768 | break; | |
769 | ||
770 | case 'Z': | |
aa5f19f2 | 771 | (*info->fprintf_func) (info->stream, "%s", |
252b5132 RH |
772 | mips16_reg_names[((l >> MIPS16OP_SH_MOVE32Z) |
773 | & MIPS16OP_MASK_MOVE32Z)]); | |
774 | break; | |
775 | ||
776 | case '0': | |
aa5f19f2 | 777 | (*info->fprintf_func) (info->stream, "%s", mips32_reg_names[0]); |
252b5132 RH |
778 | break; |
779 | ||
780 | case 'S': | |
aa5f19f2 | 781 | (*info->fprintf_func) (info->stream, "%s", mips32_reg_names[29]); |
252b5132 RH |
782 | break; |
783 | ||
784 | case 'P': | |
785 | (*info->fprintf_func) (info->stream, "$pc"); | |
786 | break; | |
787 | ||
788 | case 'R': | |
aa5f19f2 | 789 | (*info->fprintf_func) (info->stream, "%s", mips32_reg_names[31]); |
252b5132 RH |
790 | break; |
791 | ||
792 | case 'X': | |
aa5f19f2 NC |
793 | (*info->fprintf_func) (info->stream, "%s", |
794 | mips32_reg_names[((l >> MIPS16OP_SH_REGR32) | |
7f6621cd | 795 | & MIPS16OP_MASK_REGR32)]); |
252b5132 RH |
796 | break; |
797 | ||
798 | case 'Y': | |
aa5f19f2 NC |
799 | (*info->fprintf_func) (info->stream, "%s", |
800 | mips32_reg_names[MIPS16OP_EXTRACT_REG32R (l)]); | |
252b5132 RH |
801 | break; |
802 | ||
803 | case '<': | |
804 | case '>': | |
805 | case '[': | |
806 | case ']': | |
807 | case '4': | |
808 | case '5': | |
809 | case 'H': | |
810 | case 'W': | |
811 | case 'D': | |
812 | case 'j': | |
813 | case '6': | |
814 | case '8': | |
815 | case 'V': | |
816 | case 'C': | |
817 | case 'U': | |
818 | case 'k': | |
819 | case 'K': | |
820 | case 'p': | |
821 | case 'q': | |
822 | case 'A': | |
823 | case 'B': | |
824 | case 'E': | |
825 | { | |
826 | int immed, nbits, shift, signedp, extbits, pcrel, extu, branch; | |
827 | ||
828 | shift = 0; | |
829 | signedp = 0; | |
830 | extbits = 16; | |
831 | pcrel = 0; | |
832 | extu = 0; | |
833 | branch = 0; | |
834 | switch (type) | |
835 | { | |
836 | case '<': | |
837 | nbits = 3; | |
838 | immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ; | |
839 | extbits = 5; | |
840 | extu = 1; | |
841 | break; | |
842 | case '>': | |
843 | nbits = 3; | |
844 | immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX; | |
845 | extbits = 5; | |
846 | extu = 1; | |
847 | break; | |
848 | case '[': | |
849 | nbits = 3; | |
850 | immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ; | |
851 | extbits = 6; | |
852 | extu = 1; | |
853 | break; | |
854 | case ']': | |
855 | nbits = 3; | |
856 | immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX; | |
857 | extbits = 6; | |
858 | extu = 1; | |
859 | break; | |
860 | case '4': | |
861 | nbits = 4; | |
862 | immed = (l >> MIPS16OP_SH_IMM4) & MIPS16OP_MASK_IMM4; | |
863 | signedp = 1; | |
864 | extbits = 15; | |
865 | break; | |
866 | case '5': | |
867 | nbits = 5; | |
868 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
869 | info->insn_type = dis_dref; | |
870 | info->data_size = 1; | |
871 | break; | |
872 | case 'H': | |
873 | nbits = 5; | |
874 | shift = 1; | |
875 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
876 | info->insn_type = dis_dref; | |
877 | info->data_size = 2; | |
878 | break; | |
879 | case 'W': | |
880 | nbits = 5; | |
881 | shift = 2; | |
882 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
883 | if ((op->pinfo & MIPS16_INSN_READ_PC) == 0 | |
884 | && (op->pinfo & MIPS16_INSN_READ_SP) == 0) | |
885 | { | |
886 | info->insn_type = dis_dref; | |
887 | info->data_size = 4; | |
888 | } | |
889 | break; | |
890 | case 'D': | |
891 | nbits = 5; | |
892 | shift = 3; | |
893 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
894 | info->insn_type = dis_dref; | |
895 | info->data_size = 8; | |
896 | break; | |
897 | case 'j': | |
898 | nbits = 5; | |
899 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
900 | signedp = 1; | |
901 | break; | |
902 | case '6': | |
903 | nbits = 6; | |
904 | immed = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6; | |
905 | break; | |
906 | case '8': | |
907 | nbits = 8; | |
908 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
909 | break; | |
910 | case 'V': | |
911 | nbits = 8; | |
912 | shift = 2; | |
913 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
914 | /* FIXME: This might be lw, or it might be addiu to $sp or | |
915 | $pc. We assume it's load. */ | |
916 | info->insn_type = dis_dref; | |
917 | info->data_size = 4; | |
918 | break; | |
919 | case 'C': | |
920 | nbits = 8; | |
921 | shift = 3; | |
922 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
923 | info->insn_type = dis_dref; | |
924 | info->data_size = 8; | |
925 | break; | |
926 | case 'U': | |
927 | nbits = 8; | |
928 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
929 | extu = 1; | |
930 | break; | |
931 | case 'k': | |
932 | nbits = 8; | |
933 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
934 | signedp = 1; | |
935 | break; | |
936 | case 'K': | |
937 | nbits = 8; | |
938 | shift = 3; | |
939 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
940 | signedp = 1; | |
941 | break; | |
942 | case 'p': | |
943 | nbits = 8; | |
944 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
945 | signedp = 1; | |
946 | pcrel = 1; | |
947 | branch = 1; | |
948 | info->insn_type = dis_condbranch; | |
949 | break; | |
950 | case 'q': | |
951 | nbits = 11; | |
952 | immed = (l >> MIPS16OP_SH_IMM11) & MIPS16OP_MASK_IMM11; | |
953 | signedp = 1; | |
954 | pcrel = 1; | |
955 | branch = 1; | |
956 | info->insn_type = dis_branch; | |
957 | break; | |
958 | case 'A': | |
959 | nbits = 8; | |
960 | shift = 2; | |
961 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
962 | pcrel = 1; | |
963 | /* FIXME: This can be lw or la. We assume it is lw. */ | |
964 | info->insn_type = dis_dref; | |
965 | info->data_size = 4; | |
966 | break; | |
967 | case 'B': | |
968 | nbits = 5; | |
969 | shift = 3; | |
970 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
971 | pcrel = 1; | |
972 | info->insn_type = dis_dref; | |
973 | info->data_size = 8; | |
974 | break; | |
975 | case 'E': | |
976 | nbits = 5; | |
977 | shift = 2; | |
978 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
979 | pcrel = 1; | |
980 | break; | |
981 | default: | |
982 | abort (); | |
983 | } | |
984 | ||
985 | if (! use_extend) | |
986 | { | |
987 | if (signedp && immed >= (1 << (nbits - 1))) | |
988 | immed -= 1 << nbits; | |
989 | immed <<= shift; | |
990 | if ((type == '<' || type == '>' || type == '[' || type == ']') | |
991 | && immed == 0) | |
992 | immed = 8; | |
993 | } | |
994 | else | |
995 | { | |
996 | if (extbits == 16) | |
997 | immed |= ((extend & 0x1f) << 11) | (extend & 0x7e0); | |
998 | else if (extbits == 15) | |
999 | immed |= ((extend & 0xf) << 11) | (extend & 0x7f0); | |
1000 | else | |
1001 | immed = ((extend >> 6) & 0x1f) | (extend & 0x20); | |
1002 | immed &= (1 << extbits) - 1; | |
1003 | if (! extu && immed >= (1 << (extbits - 1))) | |
1004 | immed -= 1 << extbits; | |
1005 | } | |
1006 | ||
1007 | if (! pcrel) | |
1008 | (*info->fprintf_func) (info->stream, "%d", immed); | |
1009 | else | |
1010 | { | |
1011 | bfd_vma baseaddr; | |
1012 | bfd_vma val; | |
1013 | ||
1014 | if (branch) | |
1015 | { | |
1016 | immed *= 2; | |
1017 | baseaddr = memaddr + 2; | |
1018 | } | |
1019 | else if (use_extend) | |
1020 | baseaddr = memaddr - 2; | |
1021 | else | |
1022 | { | |
1023 | int status; | |
1024 | bfd_byte buffer[2]; | |
1025 | ||
1026 | baseaddr = memaddr; | |
1027 | ||
1028 | /* If this instruction is in the delay slot of a jr | |
1029 | instruction, the base address is the address of the | |
1030 | jr instruction. If it is in the delay slot of jalr | |
1031 | instruction, the base address is the address of the | |
1032 | jalr instruction. This test is unreliable: we have | |
1033 | no way of knowing whether the previous word is | |
1034 | instruction or data. */ | |
1035 | status = (*info->read_memory_func) (memaddr - 4, buffer, 2, | |
1036 | info); | |
1037 | if (status == 0 | |
1038 | && (((info->endian == BFD_ENDIAN_BIG | |
1039 | ? bfd_getb16 (buffer) | |
1040 | : bfd_getl16 (buffer)) | |
1041 | & 0xf800) == 0x1800)) | |
1042 | baseaddr = memaddr - 4; | |
1043 | else | |
1044 | { | |
1045 | status = (*info->read_memory_func) (memaddr - 2, buffer, | |
1046 | 2, info); | |
1047 | if (status == 0 | |
1048 | && (((info->endian == BFD_ENDIAN_BIG | |
1049 | ? bfd_getb16 (buffer) | |
1050 | : bfd_getl16 (buffer)) | |
1051 | & 0xf81f) == 0xe800)) | |
1052 | baseaddr = memaddr - 2; | |
1053 | } | |
1054 | } | |
7f6621cd | 1055 | val = (baseaddr & ~((1 << shift) - 1)) + immed; |
252b5132 RH |
1056 | (*info->print_address_func) (val, info); |
1057 | info->target = val; | |
1058 | } | |
1059 | } | |
1060 | break; | |
1061 | ||
1062 | case 'a': | |
1063 | if (! use_extend) | |
1064 | extend = 0; | |
1065 | l = ((l & 0x1f) << 23) | ((l & 0x3e0) << 13) | (extend << 2); | |
9117d219 | 1066 | (*info->print_address_func) (((memaddr + 4) & 0xf0000000) | l, info); |
252b5132 | 1067 | info->insn_type = dis_jsr; |
9117d219 | 1068 | info->target = ((memaddr + 4) & 0xf0000000) | l; |
252b5132 RH |
1069 | info->branch_delay_insns = 1; |
1070 | break; | |
1071 | ||
1072 | case 'l': | |
1073 | case 'L': | |
1074 | { | |
1075 | int need_comma, amask, smask; | |
1076 | ||
1077 | need_comma = 0; | |
1078 | ||
1079 | l = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6; | |
1080 | ||
1081 | amask = (l >> 3) & 7; | |
1082 | ||
1083 | if (amask > 0 && amask < 5) | |
1084 | { | |
aa5f19f2 | 1085 | (*info->fprintf_func) (info->stream, "%s", mips32_reg_names[4]); |
252b5132 | 1086 | if (amask > 1) |
aa5f19f2 NC |
1087 | (*info->fprintf_func) (info->stream, "-%s", |
1088 | mips32_reg_names[amask + 3]); | |
252b5132 RH |
1089 | need_comma = 1; |
1090 | } | |
1091 | ||
1092 | smask = (l >> 1) & 3; | |
1093 | if (smask == 3) | |
1094 | { | |
1095 | (*info->fprintf_func) (info->stream, "%s??", | |
1096 | need_comma ? "," : ""); | |
1097 | need_comma = 1; | |
1098 | } | |
1099 | else if (smask > 0) | |
1100 | { | |
aa5f19f2 | 1101 | (*info->fprintf_func) (info->stream, "%s%s", |
252b5132 | 1102 | need_comma ? "," : "", |
aa5f19f2 | 1103 | mips32_reg_names[16]); |
252b5132 | 1104 | if (smask > 1) |
aa5f19f2 NC |
1105 | (*info->fprintf_func) (info->stream, "-%s", |
1106 | mips32_reg_names[smask + 15]); | |
252b5132 RH |
1107 | need_comma = 1; |
1108 | } | |
1109 | ||
1110 | if (l & 1) | |
1111 | { | |
aa5f19f2 | 1112 | (*info->fprintf_func) (info->stream, "%s%s", |
252b5132 | 1113 | need_comma ? "," : "", |
aa5f19f2 | 1114 | mips32_reg_names[31]); |
252b5132 RH |
1115 | need_comma = 1; |
1116 | } | |
1117 | ||
1118 | if (amask == 5 || amask == 6) | |
1119 | { | |
1120 | (*info->fprintf_func) (info->stream, "%s$f0", | |
1121 | need_comma ? "," : ""); | |
1122 | if (amask == 6) | |
1123 | (*info->fprintf_func) (info->stream, "-$f1"); | |
1124 | } | |
1125 | } | |
1126 | break; | |
1127 | ||
1128 | default: | |
aa5f19f2 NC |
1129 | /* xgettext:c-format */ |
1130 | (*info->fprintf_func) | |
1131 | (info->stream, | |
1132 | _("# internal disassembler error, unrecognised modifier (%c)"), | |
1133 | type); | |
252b5132 RH |
1134 | abort (); |
1135 | } | |
1136 | } |