Commit | Line | Data |
---|---|---|
d0ba1cea | 1 | /* Print mips instructions for GDB, the GNU debugger, or for objdump. |
1124a4a7 | 2 | Copyright (c) 1989, 91-97, 1998 Free Software Foundation, Inc. |
d0ba1cea ILT |
3 | Contributed by Nobuyuki Hikichi(hikichi@sra.co.jp). |
4 | ||
8d67dc30 | 5 | This file is part of GDB, GAS, and the GNU binutils. |
d0ba1cea ILT |
6 | |
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
30b1724c | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
d0ba1cea | 20 | |
5d0734a7 | 21 | #include <ansidecl.h> |
d0ba1cea | 22 | #include "sysdep.h" |
5d0734a7 | 23 | #include "dis-asm.h" |
d0ba1cea | 24 | #include "opcode/mips.h" |
1124a4a7 | 25 | #include "opintl.h" |
d0ba1cea | 26 | |
20af0110 JM |
27 | /* FIXME: These are needed to figure out if the code is mips16 or |
28 | not. The low bit of the address is often a good indicator. No | |
29 | symbol table is available when this code runs out in an embedded | |
8b023c48 JM |
30 | system as when it is used for disassembler support in a monitor. */ |
31 | ||
20af0110 JM |
32 | #if !defined(EMBEDDED_ENV) |
33 | #define SYMTAB_AVAILABLE 1 | |
8d67dc30 ILT |
34 | #include "elf-bfd.h" |
35 | #include "elf/mips.h" | |
20af0110 | 36 | #endif |
8d67dc30 ILT |
37 | |
38 | static int print_insn_mips16 PARAMS ((bfd_vma, struct disassemble_info *)); | |
39 | static void print_mips16_insn_arg | |
40 | PARAMS ((int, const struct mips_opcode *, int, boolean, int, bfd_vma, | |
41 | struct disassemble_info *)); | |
42 | ||
d0ba1cea ILT |
43 | /* Mips instructions are never longer than this many bytes. */ |
44 | #define MAXLEN 4 | |
8d67dc30 ILT |
45 | |
46 | static void print_insn_arg PARAMS ((const char *, unsigned long, bfd_vma, | |
47 | struct disassemble_info *)); | |
48 | static int _print_insn_mips PARAMS ((bfd_vma, unsigned long int, | |
49 | struct disassemble_info *)); | |
50 | ||
d0ba1cea ILT |
51 | \f |
52 | /* FIXME: This should be shared with gdb somehow. */ | |
53 | #define REGISTER_NAMES \ | |
54 | { "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", \ | |
55 | "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", \ | |
56 | "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \ | |
57 | "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra", \ | |
58 | "sr", "lo", "hi", "bad", "cause","pc", \ | |
59 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ | |
60 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ | |
61 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",\ | |
62 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",\ | |
63 | "fsr", "fir", "fp", "inx", "rand", "tlblo","ctxt", "tlbhi",\ | |
64 | "epc", "prid"\ | |
65 | } | |
66 | ||
67 | static CONST char * CONST reg_names[] = REGISTER_NAMES; | |
8d67dc30 ILT |
68 | |
69 | /* The mips16 register names. */ | |
70 | static const char * const mips16_reg_names[] = | |
71 | { | |
72 | "s0", "s1", "v0", "v1", "a0", "a1", "a2", "a3" | |
73 | }; | |
d0ba1cea ILT |
74 | \f |
75 | /* subroutine */ | |
5d0734a7 JK |
76 | static void |
77 | print_insn_arg (d, l, pc, info) | |
547998d2 | 78 | const char *d; |
5d0734a7 | 79 | register unsigned long int l; |
d0ba1cea | 80 | bfd_vma pc; |
5d0734a7 | 81 | struct disassemble_info *info; |
d0ba1cea | 82 | { |
fde326fb ILT |
83 | int delta; |
84 | ||
d0ba1cea ILT |
85 | switch (*d) |
86 | { | |
87 | case ',': | |
88 | case '(': | |
89 | case ')': | |
f14397f0 | 90 | /* start-sanitize-cygnus */ |
83af2335 JL |
91 | case '[': |
92 | case ']': | |
f14397f0 | 93 | /* end-sanitize-cygnus */ |
ffee80df JL |
94 | /* start-sanitize-r5900 */ |
95 | case '+': | |
96 | case '-': | |
1124a4a7 | 97 | /* end-sanitize-r5900 */ |
5d0734a7 | 98 | (*info->fprintf_func) (info->stream, "%c", *d); |
d0ba1cea ILT |
99 | break; |
100 | ||
101 | case 's': | |
fde326fb ILT |
102 | case 'b': |
103 | case 'r': | |
104 | case 'v': | |
5d0734a7 JK |
105 | (*info->fprintf_func) (info->stream, "$%s", |
106 | reg_names[(l >> OP_SH_RS) & OP_MASK_RS]); | |
d0ba1cea ILT |
107 | break; |
108 | ||
109 | case 't': | |
fde326fb | 110 | case 'w': |
5d0734a7 JK |
111 | (*info->fprintf_func) (info->stream, "$%s", |
112 | reg_names[(l >> OP_SH_RT) & OP_MASK_RT]); | |
d0ba1cea ILT |
113 | break; |
114 | ||
115 | case 'i': | |
fde326fb | 116 | case 'u': |
30b1724c | 117 | (*info->fprintf_func) (info->stream, "0x%x", |
5d0734a7 | 118 | (l >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE); |
d0ba1cea ILT |
119 | break; |
120 | ||
121 | case 'j': /* same as i, but sign-extended */ | |
fde326fb ILT |
122 | case 'o': |
123 | delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA; | |
124 | if (delta & 0x8000) | |
125 | delta |= ~0xffff; | |
5d0734a7 | 126 | (*info->fprintf_func) (info->stream, "%d", |
fde326fb | 127 | delta); |
d0ba1cea ILT |
128 | break; |
129 | ||
30b1724c ILT |
130 | case 'h': |
131 | (*info->fprintf_func) (info->stream, "0x%x", | |
132 | (unsigned int) ((l >> OP_SH_PREFX) | |
133 | & OP_MASK_PREFX)); | |
134 | break; | |
135 | ||
136 | case 'k': | |
137 | (*info->fprintf_func) (info->stream, "0x%x", | |
138 | (unsigned int) ((l >> OP_SH_CACHE) | |
139 | & OP_MASK_CACHE)); | |
140 | break; | |
141 | ||
d0ba1cea | 142 | case 'a': |
fde326fb ILT |
143 | (*info->print_address_func) |
144 | (((pc & 0xF0000000) | (((l >> OP_SH_TARGET) & OP_MASK_TARGET) << 2)), | |
145 | info); | |
d0ba1cea ILT |
146 | break; |
147 | ||
fde326fb ILT |
148 | case 'p': |
149 | /* sign extend the displacement */ | |
150 | delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA; | |
151 | if (delta & 0x8000) | |
152 | delta |= ~0xffff; | |
153 | (*info->print_address_func) | |
154 | ((delta << 2) + pc + 4, | |
155 | info); | |
d0ba1cea ILT |
156 | break; |
157 | ||
158 | case 'd': | |
5d0734a7 JK |
159 | (*info->fprintf_func) (info->stream, "$%s", |
160 | reg_names[(l >> OP_SH_RD) & OP_MASK_RD]); | |
d0ba1cea ILT |
161 | break; |
162 | ||
547998d2 ILT |
163 | case 'z': |
164 | (*info->fprintf_func) (info->stream, "$%s", reg_names[0]); | |
165 | break; | |
166 | ||
fde326fb | 167 | case '<': |
5d0734a7 JK |
168 | (*info->fprintf_func) (info->stream, "0x%x", |
169 | (l >> OP_SH_SHAMT) & OP_MASK_SHAMT); | |
d0ba1cea ILT |
170 | break; |
171 | ||
fde326fb | 172 | case 'c': |
5d0734a7 JK |
173 | (*info->fprintf_func) (info->stream, "0x%x", |
174 | (l >> OP_SH_CODE) & OP_MASK_CODE); | |
d0ba1cea ILT |
175 | break; |
176 | ||
1124a4a7 JL |
177 | |
178 | case 'q': | |
179 | (*info->fprintf_func) (info->stream, "0x%x", | |
180 | (l >> OP_SH_CODE2) & OP_MASK_CODE2); | |
181 | break; | |
182 | ||
fde326fb ILT |
183 | case 'C': |
184 | (*info->fprintf_func) (info->stream, "0x%x", | |
185 | (l >> OP_SH_COPZ) & OP_MASK_COPZ); | |
186 | break; | |
187 | ||
188 | case 'B': | |
189 | (*info->fprintf_func) (info->stream, "0x%x", | |
190 | (l >> OP_SH_SYSCALL) & OP_MASK_SYSCALL); | |
191 | break; | |
192 | ||
d0ba1cea | 193 | case 'S': |
fde326fb | 194 | case 'V': |
5d0734a7 JK |
195 | (*info->fprintf_func) (info->stream, "$f%d", |
196 | (l >> OP_SH_FS) & OP_MASK_FS); | |
d0ba1cea ILT |
197 | break; |
198 | ||
92976c09 | 199 | /* start-sanitize-r5900 */ |
ffee80df JL |
200 | case '0': |
201 | (*info->fprintf_func) (info->stream, "0x%x", | |
202 | (l >> 6) & 0x1f); | |
203 | break; | |
204 | ||
205 | case '9': | |
92976c09 | 206 | (*info->fprintf_func) (info->stream, "vi27"); |
ffee80df JL |
207 | break; |
208 | ||
209 | case '1': | |
210 | (*info->fprintf_func) (info->stream, "vf%d", | |
211 | (l >> OP_SH_FT) & OP_MASK_FT); | |
212 | break; | |
213 | case '2': | |
214 | (*info->fprintf_func) (info->stream, "vf%d", | |
215 | (l >> OP_SH_FS) & OP_MASK_FS); | |
216 | break; | |
217 | case '3': | |
218 | (*info->fprintf_func) (info->stream, "vf%d", | |
219 | (l >> OP_SH_FD) & OP_MASK_FD); | |
220 | break; | |
221 | ||
222 | case '4': | |
223 | (*info->fprintf_func) (info->stream, "vi%d", | |
224 | (l >> OP_SH_FT) & OP_MASK_FT); | |
225 | break; | |
226 | case '5': | |
227 | (*info->fprintf_func) (info->stream, "vi%d", | |
228 | (l >> OP_SH_FS) & OP_MASK_FS); | |
229 | break; | |
230 | case '6': | |
231 | (*info->fprintf_func) (info->stream, "vi%d", | |
232 | (l >> OP_SH_FD) & OP_MASK_FD); | |
233 | break; | |
234 | ||
235 | case '7': | |
236 | (*info->fprintf_func) (info->stream, "vf%d", | |
237 | (l >> OP_SH_FT) & OP_MASK_FT); | |
238 | switch ((l >> 23) & 0x3) | |
239 | { | |
240 | case 0: | |
241 | (*info->fprintf_func) (info->stream, "x"); | |
242 | break; | |
243 | case 1: | |
244 | (*info->fprintf_func) (info->stream, "y"); | |
245 | break; | |
246 | case 2: | |
247 | (*info->fprintf_func) (info->stream, "z"); | |
248 | break; | |
249 | case 3: | |
250 | (*info->fprintf_func) (info->stream, "w"); | |
251 | break; | |
252 | } | |
253 | break; | |
254 | case 'K': | |
255 | break; | |
256 | ||
1124a4a7 JL |
257 | case ';': |
258 | (*info->fprintf_func) (info->stream, ".xyz\t"); | |
259 | break; | |
260 | ||
ffee80df JL |
261 | case '&': |
262 | (*info->fprintf_func) (info->stream, "."); | |
263 | if (l & (1 << 21)) | |
264 | (*info->fprintf_func) (info->stream, "w"); | |
265 | if (l & (1 << 24)) | |
266 | (*info->fprintf_func) (info->stream, "x"); | |
267 | if (l & (1 << 23)) | |
268 | (*info->fprintf_func) (info->stream, "y"); | |
269 | if (l & (1 << 22)) | |
270 | (*info->fprintf_func) (info->stream, "z"); | |
271 | (*info->fprintf_func) (info->stream, "\t"); | |
272 | break; | |
273 | ||
274 | case '8': | |
275 | (*info->fprintf_func) (info->stream, "vf%d", | |
276 | (l >> OP_SH_FS) & OP_MASK_FS); | |
277 | switch ((l >> 21) & 0x3) | |
278 | { | |
279 | case 0: | |
280 | (*info->fprintf_func) (info->stream, "x"); | |
281 | break; | |
282 | case 1: | |
283 | (*info->fprintf_func) (info->stream, "y"); | |
284 | break; | |
285 | case 2: | |
286 | (*info->fprintf_func) (info->stream, "z"); | |
287 | break; | |
288 | case 3: | |
289 | (*info->fprintf_func) (info->stream, "w"); | |
290 | break; | |
291 | } | |
292 | break; | |
293 | case 'J': | |
294 | (*info->fprintf_func) (info->stream, "I"); | |
295 | break; | |
296 | ||
297 | case 'Q': | |
298 | (*info->fprintf_func) (info->stream, "Q"); | |
299 | break; | |
300 | ||
301 | case 'X': | |
302 | (*info->fprintf_func) (info->stream, "R"); | |
303 | break; | |
304 | ||
305 | case 'U': | |
306 | (*info->fprintf_func) (info->stream, "ACC"); | |
307 | break; | |
98f699f6 JL |
308 | |
309 | case 'O': | |
310 | delta = (l >> 6) & 0x7fff; | |
311 | delta <<= 3; | |
312 | (*info->print_address_func) (delta, info); | |
313 | break; | |
314 | ||
ffee80df JL |
315 | /* end-sanitize-r5900 */ |
316 | ||
d0ba1cea | 317 | case 'T': |
fde326fb | 318 | case 'W': |
5d0734a7 JK |
319 | (*info->fprintf_func) (info->stream, "$f%d", |
320 | (l >> OP_SH_FT) & OP_MASK_FT); | |
d0ba1cea ILT |
321 | break; |
322 | ||
323 | case 'D': | |
5d0734a7 JK |
324 | (*info->fprintf_func) (info->stream, "$f%d", |
325 | (l >> OP_SH_FD) & OP_MASK_FD); | |
d0ba1cea ILT |
326 | break; |
327 | ||
30b1724c ILT |
328 | case 'R': |
329 | (*info->fprintf_func) (info->stream, "$f%d", | |
330 | (l >> OP_SH_FR) & OP_MASK_FR); | |
331 | break; | |
332 | ||
fde326fb ILT |
333 | case 'E': |
334 | (*info->fprintf_func) (info->stream, "$%d", | |
335 | (l >> OP_SH_RT) & OP_MASK_RT); | |
336 | break; | |
337 | ||
338 | case 'G': | |
339 | (*info->fprintf_func) (info->stream, "$%d", | |
340 | (l >> OP_SH_RD) & OP_MASK_RD); | |
341 | break; | |
342 | ||
30b1724c ILT |
343 | case 'N': |
344 | (*info->fprintf_func) (info->stream, "$fcc%d", | |
345 | (l >> OP_SH_BCC) & OP_MASK_BCC); | |
346 | break; | |
347 | ||
348 | case 'M': | |
349 | (*info->fprintf_func) (info->stream, "$fcc%d", | |
350 | (l >> OP_SH_CCC) & OP_MASK_CCC); | |
351 | break; | |
352 | ||
83af2335 | 353 | case 'P': |
fb1a826b | 354 | (*info->fprintf_func) (info->stream, "%d", |
83af2335 JL |
355 | (l >> OP_SH_PERFREG) & OP_MASK_PERFREG); |
356 | break; | |
357 | ||
f14397f0 | 358 | /* start-sanitize-cygnus */ |
83af2335 JL |
359 | case 'e': |
360 | (*info->fprintf_func) (info->stream, "%d", | |
361 | (l >> OP_SH_VECBYTE) & OP_MASK_VECBYTE); | |
362 | break; | |
363 | ||
364 | case '%': | |
365 | (*info->fprintf_func) (info->stream, "%d", | |
366 | (l >> OP_SH_VECALIGN) & OP_MASK_VECALIGN); | |
367 | break; | |
f14397f0 | 368 | /* end-sanitize-cygnus */ |
83af2335 | 369 | |
d0ba1cea | 370 | default: |
1124a4a7 | 371 | /* xgettext:c-format */ |
5d0734a7 | 372 | (*info->fprintf_func) (info->stream, |
1124a4a7 JL |
373 | _("# internal error, undefined modifier(%c)"), |
374 | *d); | |
d0ba1cea ILT |
375 | break; |
376 | } | |
377 | } | |
378 | \f | |
20af0110 | 379 | #if SYMTAB_AVAILABLE |
d0ba1cea | 380 | |
4b035e8e ILT |
381 | /* Figure out the MIPS ISA and CPU based on the machine number. |
382 | FIXME: What does this have to do with SYMTAB_AVAILABLE? */ | |
383 | ||
384 | static void | |
385 | set_mips_isa_type (mach, isa, cputype) | |
386 | int mach; | |
387 | int *isa; | |
388 | int *cputype; | |
20af0110 | 389 | { |
4b035e8e ILT |
390 | int target_processor = 0; |
391 | int mips_isa = 0; | |
392 | ||
393 | switch (mach) | |
83af2335 JL |
394 | { |
395 | /* start-sanitize-tx19 */ | |
396 | case bfd_mach_mips1900: | |
397 | target_processor = 1900; | |
398 | mips_isa = 1; | |
399 | break; | |
400 | /* end-sanitize-tx19 */ | |
401 | case bfd_mach_mips3000: | |
402 | target_processor = 3000; | |
403 | mips_isa = 1; | |
404 | break; | |
405 | case bfd_mach_mips3900: | |
406 | target_processor = 3900; | |
407 | mips_isa = 1; | |
408 | break; | |
409 | case bfd_mach_mips4000: | |
410 | target_processor = 4000; | |
411 | mips_isa = 3; | |
412 | break; | |
413 | case bfd_mach_mips4010: | |
414 | target_processor = 4010; | |
415 | mips_isa = 2; | |
416 | break; | |
417 | case bfd_mach_mips4100: | |
418 | target_processor = 4100; | |
419 | mips_isa = 3; | |
420 | break; | |
f14397f0 GRK |
421 | /* start-sanitize-vr4xxx */ |
422 | case bfd_mach_mips4121: | |
423 | target_processor = 4121; | |
424 | mips_isa = 3; | |
425 | break; | |
426 | /* end-sanitize-vr4xxx */ | |
83af2335 JL |
427 | case bfd_mach_mips4300: |
428 | target_processor = 4300; | |
429 | mips_isa = 3; | |
430 | break; | |
ffee80df JL |
431 | /* start-sanitize-vr4320 */ |
432 | case bfd_mach_mips4320: | |
433 | target_processor = 4320; | |
434 | mips_isa = 3; | |
435 | break; | |
436 | /* end-sanitize-vr4320 */ | |
83af2335 JL |
437 | case bfd_mach_mips4400: |
438 | target_processor = 4400; | |
439 | mips_isa = 3; | |
440 | break; | |
441 | case bfd_mach_mips4600: | |
442 | target_processor = 4600; | |
443 | mips_isa = 3; | |
444 | break; | |
445 | case bfd_mach_mips4650: | |
446 | target_processor = 4650; | |
447 | mips_isa = 3; | |
448 | break; | |
449 | /* start-sanitize-tx49 */ | |
450 | case bfd_mach_mips4900: | |
451 | target_processor = 4900; | |
452 | mips_isa = 3; | |
453 | break; | |
454 | /* end-sanitize-tx49 */ | |
455 | case bfd_mach_mips5000: | |
456 | target_processor = 5000; | |
457 | mips_isa = 4; | |
458 | break; | |
f14397f0 | 459 | /* start-sanitize-cygnus */ |
83af2335 JL |
460 | case bfd_mach_mips5400: |
461 | target_processor = 5400; | |
462 | mips_isa = 3; | |
463 | break; | |
f14397f0 | 464 | /* end-sanitize-cygnus */ |
83af2335 JL |
465 | /* start-sanitize-r5900 */ |
466 | case bfd_mach_mips5900: | |
467 | target_processor = 5900; | |
468 | mips_isa = 3; | |
469 | break; | |
470 | /* end-sanitize-r5900 */ | |
471 | case bfd_mach_mips6000: | |
472 | target_processor = 6000; | |
473 | mips_isa = 2; | |
474 | break; | |
475 | case bfd_mach_mips8000: | |
476 | target_processor = 8000; | |
477 | mips_isa = 4; | |
478 | break; | |
479 | case bfd_mach_mips10000: | |
480 | target_processor = 10000; | |
481 | mips_isa = 4; | |
482 | break; | |
483 | case bfd_mach_mips16: | |
484 | target_processor = 16; | |
485 | mips_isa = 3; | |
486 | break; | |
487 | default: | |
488 | target_processor = 3000; | |
489 | mips_isa = 3; | |
490 | break; | |
491 | ||
492 | } | |
4b035e8e ILT |
493 | |
494 | *isa = mips_isa; | |
495 | *cputype = target_processor; | |
20af0110 | 496 | } |
4b035e8e ILT |
497 | |
498 | #endif /* SYMTAB_AVAILABLE */ | |
20af0110 | 499 | |
8b023c48 JM |
500 | /* Print the mips instruction at address MEMADDR in debugged memory, |
501 | on using INFO. Returns length of the instruction, in bytes, which is | |
502 | always 4. BIGENDIAN must be 1 if this is big-endian code, 0 if | |
503 | this is little-endian code. */ | |
504 | ||
20af0110 JM |
505 | static int |
506 | _print_insn_mips (memaddr, word, info) | |
507 | bfd_vma memaddr; | |
508 | unsigned long int word; | |
509 | struct disassemble_info *info; | |
510 | { | |
511 | register const struct mips_opcode *op; | |
512 | int target_processor, mips_isa; | |
513 | static boolean init = 0; | |
514 | static const struct mips_opcode *mips_hash[OP_MASK_OP + 1]; | |
515 | ||
516 | /* Build a hash table to shorten the search time. */ | |
517 | if (! init) | |
518 | { | |
519 | unsigned int i; | |
520 | ||
521 | for (i = 0; i <= OP_MASK_OP; i++) | |
522 | { | |
523 | for (op = mips_opcodes; op < &mips_opcodes[NUMOPCODES]; op++) | |
524 | { | |
525 | if (op->pinfo == INSN_MACRO) | |
526 | continue; | |
527 | if (i == ((op->match >> OP_SH_OP) & OP_MASK_OP)) | |
528 | { | |
529 | mips_hash[i] = op; | |
530 | break; | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
535 | init = 1; | |
536 | } | |
4b035e8e | 537 | |
20af0110 | 538 | #if ! SYMTAB_AVAILABLE |
4b035e8e ILT |
539 | /* This is running out on a target machine, not in a host tool. |
540 | FIXME: Where does mips_target_info come from? */ | |
541 | target_processor = mips_target_info.processor; | |
542 | mips_isa = mips_target_info.isa; | |
20af0110 | 543 | #else |
f14397f0 | 544 | set_mips_isa_type (info->mach, &mips_isa, &target_processor); |
20af0110 | 545 | #endif |
83af2335 | 546 | |
2ea116f4 ILT |
547 | info->bytes_per_chunk = 4; |
548 | info->display_endian = info->endian; | |
549 | ||
30b1724c ILT |
550 | op = mips_hash[(word >> OP_SH_OP) & OP_MASK_OP]; |
551 | if (op != NULL) | |
d0ba1cea | 552 | { |
30b1724c ILT |
553 | for (; op < &mips_opcodes[NUMOPCODES]; op++) |
554 | { | |
555 | if (op->pinfo != INSN_MACRO && (word & op->mask) == op->match) | |
556 | { | |
557 | register const char *d; | |
83af2335 JL |
558 | int insn_isa; |
559 | ||
560 | if ((op->membership & INSN_ISA) == INSN_ISA1) | |
561 | insn_isa = 1; | |
562 | else if ((op->membership & INSN_ISA) == INSN_ISA2) | |
563 | insn_isa = 2; | |
564 | else if ((op->membership & INSN_ISA) == INSN_ISA3) | |
565 | insn_isa = 3; | |
566 | else if ((op->membership & INSN_ISA) == INSN_ISA4) | |
567 | insn_isa = 4; | |
568 | else | |
569 | insn_isa = 15; | |
570 | ||
571 | if (insn_isa > mips_isa | |
572 | && (target_processor == 4650 | |
573 | && op->membership & INSN_4650) == 0 | |
574 | && (target_processor == 4010 | |
575 | && op->membership & INSN_4010) == 0 | |
576 | && (target_processor == 4100 | |
577 | && op->membership & INSN_4100) == 0 | |
f14397f0 GRK |
578 | /* start-sanitize-vr4xxx */ |
579 | && (target_processor == 4121 | |
580 | && op->membership & INSN_4121) == 0 | |
581 | /* end-sanitize-vr4xxx */ | |
ffee80df JL |
582 | /* start-sanitize-vr4320 */ |
583 | && (target_processor == 4320 | |
584 | && op->membership & INSN_4320) == 0 | |
585 | /* end-sanitize-vr4320 */ | |
f14397f0 | 586 | /* start-sanitize-cygnus */ |
83af2335 JL |
587 | && (target_processor == 5400 |
588 | && op->membership & INSN_5400) == 0 | |
f14397f0 | 589 | /* end-sanitize-cygnus */ |
83af2335 JL |
590 | /* start-sanitize-r5900 */ |
591 | && (target_processor == 5900 | |
592 | && op->membership & INSN_5900) == 0 | |
593 | /* end-sanitize-r5900 */ | |
594 | /* start-sanitize-tx49 */ | |
595 | && (target_processor == 4900 | |
596 | && op->membership & INSN_4900) == 0 | |
597 | /* end-sanitize-tx49 */ | |
598 | && (target_processor == 3900 | |
599 | && op->membership & INSN_3900) == 0) | |
600 | continue; | |
30b1724c ILT |
601 | |
602 | (*info->fprintf_func) (info->stream, "%s", op->name); | |
603 | ||
604 | d = op->args; | |
8d67dc30 | 605 | if (d != NULL && *d != '\0') |
30b1724c | 606 | { |
ffee80df JL |
607 | /* start-sanitize-r5900 */ |
608 | /* If this is an opcode completer, then do not emit | |
609 | a tab after the opcode. */ | |
1124a4a7 | 610 | if (*d != '&' && *d != ';') |
ffee80df JL |
611 | /* end-sanitize-r5900 */ |
612 | (*info->fprintf_func) (info->stream, "\t"); | |
30b1724c | 613 | for (; *d != '\0'; d++) |
ffee80df JL |
614 | /* start-sanitize-r5900 */ |
615 | /* If this is an escape character, go ahead and print the | |
616 | next character in the arg string verbatim. */ | |
98f699f6 | 617 | if (*d == '#') |
ffee80df JL |
618 | { |
619 | d++; | |
620 | (*info->fprintf_func) (info->stream, "%c", *d); | |
621 | } | |
622 | else | |
623 | /* end-sanitize-r5900 */ | |
624 | print_insn_arg (d, word, memaddr, info); | |
30b1724c ILT |
625 | } |
626 | ||
627 | return 4; | |
628 | } | |
629 | } | |
d0ba1cea ILT |
630 | } |
631 | ||
30b1724c ILT |
632 | /* Handle undefined instructions. */ |
633 | (*info->fprintf_func) (info->stream, "0x%x", word); | |
d0ba1cea ILT |
634 | return 4; |
635 | } | |
5d0734a7 | 636 | |
20af0110 | 637 | |
4b035e8e ILT |
638 | /* In an environment where we do not know the symbol type of the |
639 | instruction we are forced to assume that the low order bit of the | |
640 | instructions' address may mark it as a mips16 instruction. If we | |
641 | are single stepping, or the pc is within the disassembled function, | |
642 | this works. Otherwise, we need a clue. Sometimes. */ | |
20af0110 | 643 | |
5d0734a7 JK |
644 | int |
645 | print_insn_big_mips (memaddr, info) | |
646 | bfd_vma memaddr; | |
647 | struct disassemble_info *info; | |
648 | { | |
649 | bfd_byte buffer[4]; | |
8d67dc30 ILT |
650 | int status; |
651 | ||
20af0110 | 652 | #if 1 |
4b035e8e ILT |
653 | /* FIXME: If odd address, this is CLEARLY a mips 16 instruction. */ |
654 | /* Only a few tools will work this way. */ | |
8b023c48 JM |
655 | if (memaddr & 0x01) |
656 | return print_insn_mips16 (memaddr, info); | |
20af0110 JM |
657 | #endif |
658 | ||
659 | #if SYMTAB_AVAILABLE | |
8d67dc30 ILT |
660 | if (info->mach == 16 |
661 | || (info->flavour == bfd_target_elf_flavour | |
88b38f0c DE |
662 | && info->symbols != NULL |
663 | && ((*(elf_symbol_type **) info->symbols)->internal_elf_sym.st_other | |
8d67dc30 ILT |
664 | == STO_MIPS16))) |
665 | return print_insn_mips16 (memaddr, info); | |
20af0110 | 666 | #endif |
8d67dc30 ILT |
667 | |
668 | status = (*info->read_memory_func) (memaddr, buffer, 4, info); | |
5d0734a7 | 669 | if (status == 0) |
8d67dc30 ILT |
670 | return _print_insn_mips (memaddr, (unsigned long) bfd_getb32 (buffer), |
671 | info); | |
5d0734a7 JK |
672 | else |
673 | { | |
674 | (*info->memory_error_func) (status, memaddr, info); | |
675 | return -1; | |
676 | } | |
677 | } | |
678 | ||
679 | int | |
680 | print_insn_little_mips (memaddr, info) | |
681 | bfd_vma memaddr; | |
682 | struct disassemble_info *info; | |
683 | { | |
684 | bfd_byte buffer[4]; | |
8d67dc30 ILT |
685 | int status; |
686 | ||
37130f11 DE |
687 | /* start-sanitize-sky */ |
688 | #ifdef ARCH_dvp | |
88b38f0c DE |
689 | { |
690 | /* bfd_mach_dvp_p is a macro which may evaluate its arguments more than | |
691 | once. Since dvp_mach_type is a function, ensure it's only called | |
692 | once. */ | |
693 | int mach = dvp_info_mach_type (info); | |
694 | ||
695 | if (bfd_mach_dvp_p (info->mach) | |
696 | || bfd_mach_dvp_p (mach)) | |
697 | return print_insn_dvp (memaddr, info); | |
698 | } | |
37130f11 DE |
699 | #endif |
700 | /* end-sanitize-sky */ | |
701 | ||
20af0110 | 702 | #if 1 |
4b035e8e ILT |
703 | if (memaddr & 0x01) |
704 | return print_insn_mips16 (memaddr, info); | |
20af0110 JM |
705 | #endif |
706 | ||
707 | #if SYMTAB_AVAILABLE | |
8d67dc30 ILT |
708 | if (info->mach == 16 |
709 | || (info->flavour == bfd_target_elf_flavour | |
88b38f0c DE |
710 | && info->symbols != NULL |
711 | && ((*(elf_symbol_type **) info->symbols)->internal_elf_sym.st_other | |
8d67dc30 ILT |
712 | == STO_MIPS16))) |
713 | return print_insn_mips16 (memaddr, info); | |
20af0110 | 714 | #endif |
8d67dc30 ILT |
715 | |
716 | status = (*info->read_memory_func) (memaddr, buffer, 4, info); | |
5d0734a7 | 717 | if (status == 0) |
8d67dc30 ILT |
718 | return _print_insn_mips (memaddr, (unsigned long) bfd_getl32 (buffer), |
719 | info); | |
5d0734a7 JK |
720 | else |
721 | { | |
722 | (*info->memory_error_func) (status, memaddr, info); | |
723 | return -1; | |
724 | } | |
725 | } | |
8d67dc30 ILT |
726 | \f |
727 | /* Disassemble mips16 instructions. */ | |
728 | ||
729 | static int | |
730 | print_insn_mips16 (memaddr, info) | |
731 | bfd_vma memaddr; | |
732 | struct disassemble_info *info; | |
733 | { | |
734 | int status; | |
735 | bfd_byte buffer[2]; | |
736 | int length; | |
737 | int insn; | |
738 | boolean use_extend; | |
92976c09 | 739 | int extend = 0; |
8d67dc30 ILT |
740 | const struct mips_opcode *op, *opend; |
741 | ||
2ea116f4 ILT |
742 | info->bytes_per_chunk = 2; |
743 | info->display_endian = info->endian; | |
744 | ||
20d43018 ILT |
745 | info->insn_info_valid = 1; |
746 | info->branch_delay_insns = 0; | |
747 | info->data_size = 0; | |
748 | info->insn_type = dis_nonbranch; | |
749 | info->target = 0; | |
750 | info->target2 = 0; | |
751 | ||
8d67dc30 ILT |
752 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); |
753 | if (status != 0) | |
754 | { | |
755 | (*info->memory_error_func) (status, memaddr, info); | |
756 | return -1; | |
757 | } | |
758 | ||
759 | length = 2; | |
760 | ||
761 | if (info->endian == BFD_ENDIAN_BIG) | |
762 | insn = bfd_getb16 (buffer); | |
763 | else | |
764 | insn = bfd_getl16 (buffer); | |
765 | ||
766 | /* Handle the extend opcode specially. */ | |
767 | use_extend = false; | |
768 | if ((insn & 0xf800) == 0xf000) | |
769 | { | |
770 | use_extend = true; | |
771 | extend = insn & 0x7ff; | |
772 | ||
773 | memaddr += 2; | |
774 | ||
775 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); | |
776 | if (status != 0) | |
777 | { | |
778 | (*info->fprintf_func) (info->stream, "extend 0x%x", | |
779 | (unsigned int) extend); | |
780 | (*info->memory_error_func) (status, memaddr, info); | |
781 | return -1; | |
782 | } | |
783 | ||
8d67dc30 ILT |
784 | if (info->endian == BFD_ENDIAN_BIG) |
785 | insn = bfd_getb16 (buffer); | |
786 | else | |
787 | insn = bfd_getl16 (buffer); | |
c4f19df2 ILT |
788 | |
789 | /* Check for an extend opcode followed by an extend opcode. */ | |
790 | if ((insn & 0xf800) == 0xf000) | |
791 | { | |
792 | (*info->fprintf_func) (info->stream, "extend 0x%x", | |
793 | (unsigned int) extend); | |
20d43018 | 794 | info->insn_type = dis_noninsn; |
c4f19df2 ILT |
795 | return length; |
796 | } | |
797 | ||
798 | length += 2; | |
8d67dc30 ILT |
799 | } |
800 | ||
801 | /* FIXME: Should probably use a hash table on the major opcode here. */ | |
802 | ||
803 | opend = mips16_opcodes + bfd_mips16_num_opcodes; | |
804 | for (op = mips16_opcodes; op < opend; op++) | |
805 | { | |
806 | if (op->pinfo != INSN_MACRO && (insn & op->mask) == op->match) | |
807 | { | |
808 | const char *s; | |
809 | ||
810 | if (strchr (op->args, 'a') != NULL) | |
811 | { | |
812 | if (use_extend) | |
c4f19df2 ILT |
813 | { |
814 | (*info->fprintf_func) (info->stream, "extend 0x%x", | |
815 | (unsigned int) extend); | |
20d43018 | 816 | info->insn_type = dis_noninsn; |
c4f19df2 ILT |
817 | return length - 2; |
818 | } | |
819 | ||
8d67dc30 ILT |
820 | use_extend = false; |
821 | ||
822 | memaddr += 2; | |
823 | ||
824 | status = (*info->read_memory_func) (memaddr, buffer, 2, | |
825 | info); | |
826 | if (status == 0) | |
827 | { | |
828 | use_extend = true; | |
829 | if (info->endian == BFD_ENDIAN_BIG) | |
830 | extend = bfd_getb16 (buffer); | |
831 | else | |
832 | extend = bfd_getl16 (buffer); | |
833 | length += 2; | |
834 | } | |
835 | } | |
836 | ||
c4f19df2 ILT |
837 | (*info->fprintf_func) (info->stream, "%s", op->name); |
838 | if (op->args[0] != '\0') | |
839 | (*info->fprintf_func) (info->stream, "\t"); | |
8d67dc30 ILT |
840 | |
841 | for (s = op->args; *s != '\0'; s++) | |
842 | { | |
843 | if (*s == ',' | |
844 | && s[1] == 'w' | |
845 | && (((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX) | |
846 | == ((insn >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY))) | |
847 | { | |
848 | /* Skip the register and the comma. */ | |
849 | ++s; | |
850 | continue; | |
851 | } | |
852 | if (*s == ',' | |
853 | && s[1] == 'v' | |
854 | && (((insn >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ) | |
855 | == ((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX))) | |
856 | { | |
857 | /* Skip the register and the comma. */ | |
858 | ++s; | |
859 | continue; | |
860 | } | |
861 | print_mips16_insn_arg (*s, op, insn, use_extend, extend, memaddr, | |
862 | info); | |
863 | } | |
864 | ||
20d43018 ILT |
865 | if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) |
866 | { | |
867 | info->branch_delay_insns = 1; | |
868 | if (info->insn_type != dis_jsr) | |
869 | info->insn_type = dis_branch; | |
870 | } | |
871 | ||
8d67dc30 ILT |
872 | return length; |
873 | } | |
874 | } | |
875 | ||
876 | if (use_extend) | |
877 | (*info->fprintf_func) (info->stream, "0x%x", extend | 0xf000); | |
878 | (*info->fprintf_func) (info->stream, "0x%x", insn); | |
20d43018 | 879 | info->insn_type = dis_noninsn; |
8d67dc30 ILT |
880 | |
881 | return length; | |
882 | } | |
883 | ||
884 | /* Disassemble an operand for a mips16 instruction. */ | |
885 | ||
886 | static void | |
887 | print_mips16_insn_arg (type, op, l, use_extend, extend, memaddr, info) | |
888 | int type; | |
889 | const struct mips_opcode *op; | |
890 | int l; | |
891 | boolean use_extend; | |
892 | int extend; | |
893 | bfd_vma memaddr; | |
894 | struct disassemble_info *info; | |
895 | { | |
896 | switch (type) | |
897 | { | |
898 | case ',': | |
899 | case '(': | |
900 | case ')': | |
901 | (*info->fprintf_func) (info->stream, "%c", type); | |
902 | break; | |
903 | ||
904 | case 'y': | |
905 | case 'w': | |
906 | (*info->fprintf_func) (info->stream, "$%s", | |
907 | mips16_reg_names[((l >> MIPS16OP_SH_RY) | |
908 | & MIPS16OP_MASK_RY)]); | |
909 | break; | |
910 | ||
911 | case 'x': | |
912 | case 'v': | |
913 | (*info->fprintf_func) (info->stream, "$%s", | |
914 | mips16_reg_names[((l >> MIPS16OP_SH_RX) | |
915 | & MIPS16OP_MASK_RX)]); | |
916 | break; | |
917 | ||
918 | case 'z': | |
919 | (*info->fprintf_func) (info->stream, "$%s", | |
920 | mips16_reg_names[((l >> MIPS16OP_SH_RZ) | |
921 | & MIPS16OP_MASK_RZ)]); | |
922 | break; | |
923 | ||
924 | case 'Z': | |
925 | (*info->fprintf_func) (info->stream, "$%s", | |
926 | mips16_reg_names[((l >> MIPS16OP_SH_MOVE32Z) | |
927 | & MIPS16OP_MASK_MOVE32Z)]); | |
928 | break; | |
929 | ||
930 | case '0': | |
931 | (*info->fprintf_func) (info->stream, "$%s", reg_names[0]); | |
932 | break; | |
933 | ||
934 | case 'S': | |
935 | (*info->fprintf_func) (info->stream, "$%s", reg_names[29]); | |
936 | break; | |
937 | ||
938 | case 'P': | |
939 | (*info->fprintf_func) (info->stream, "$pc"); | |
940 | break; | |
941 | ||
942 | case 'R': | |
943 | (*info->fprintf_func) (info->stream, "$%s", reg_names[31]); | |
944 | break; | |
945 | ||
946 | case 'X': | |
947 | (*info->fprintf_func) (info->stream, "$%s", | |
948 | reg_names[((l >> MIPS16OP_SH_REGR32) | |
949 | & MIPS16OP_MASK_REGR32)]); | |
950 | break; | |
951 | ||
952 | case 'Y': | |
953 | (*info->fprintf_func) (info->stream, "$%s", | |
954 | reg_names[MIPS16OP_EXTRACT_REG32R (l)]); | |
955 | break; | |
956 | ||
957 | case '<': | |
958 | case '>': | |
959 | case '[': | |
960 | case ']': | |
961 | case '4': | |
962 | case '5': | |
963 | case 'H': | |
964 | case 'W': | |
965 | case 'D': | |
966 | case 'j': | |
967 | case '6': | |
968 | case '8': | |
969 | case 'V': | |
970 | case 'C': | |
971 | case 'U': | |
972 | case 'k': | |
973 | case 'K': | |
974 | case 'p': | |
975 | case 'q': | |
976 | case 'A': | |
977 | case 'B': | |
978 | case 'E': | |
979 | { | |
980 | int immed, nbits, shift, signedp, extbits, pcrel, extu, branch; | |
981 | ||
982 | shift = 0; | |
983 | signedp = 0; | |
984 | extbits = 16; | |
985 | pcrel = 0; | |
986 | extu = 0; | |
987 | branch = 0; | |
988 | switch (type) | |
989 | { | |
990 | case '<': | |
991 | nbits = 3; | |
992 | immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ; | |
993 | extbits = 5; | |
994 | extu = 1; | |
995 | break; | |
996 | case '>': | |
997 | nbits = 3; | |
998 | immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX; | |
999 | extbits = 5; | |
1000 | extu = 1; | |
1001 | break; | |
1002 | case '[': | |
1003 | nbits = 3; | |
1004 | immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ; | |
1005 | extbits = 6; | |
1006 | extu = 1; | |
1007 | break; | |
1008 | case ']': | |
1009 | nbits = 3; | |
1010 | immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX; | |
1011 | extbits = 6; | |
1012 | extu = 1; | |
1013 | break; | |
1014 | case '4': | |
1015 | nbits = 4; | |
1016 | immed = (l >> MIPS16OP_SH_IMM4) & MIPS16OP_MASK_IMM4; | |
1017 | signedp = 1; | |
1018 | extbits = 15; | |
1019 | break; | |
1020 | case '5': | |
1021 | nbits = 5; | |
1022 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
20d43018 ILT |
1023 | info->insn_type = dis_dref; |
1024 | info->data_size = 1; | |
8d67dc30 ILT |
1025 | break; |
1026 | case 'H': | |
1027 | nbits = 5; | |
1028 | shift = 1; | |
1029 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
20d43018 ILT |
1030 | info->insn_type = dis_dref; |
1031 | info->data_size = 2; | |
8d67dc30 ILT |
1032 | break; |
1033 | case 'W': | |
1034 | nbits = 5; | |
1035 | shift = 2; | |
1036 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
20d43018 ILT |
1037 | if ((op->pinfo & MIPS16_INSN_READ_PC) == 0 |
1038 | && (op->pinfo & MIPS16_INSN_READ_SP) == 0) | |
1039 | { | |
1040 | info->insn_type = dis_dref; | |
1041 | info->data_size = 4; | |
1042 | } | |
8d67dc30 ILT |
1043 | break; |
1044 | case 'D': | |
1045 | nbits = 5; | |
1046 | shift = 3; | |
1047 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
20d43018 ILT |
1048 | info->insn_type = dis_dref; |
1049 | info->data_size = 8; | |
8d67dc30 ILT |
1050 | break; |
1051 | case 'j': | |
1052 | nbits = 5; | |
1053 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
1054 | signedp = 1; | |
1055 | break; | |
1056 | case '6': | |
1057 | nbits = 6; | |
1058 | immed = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6; | |
1059 | break; | |
1060 | case '8': | |
1061 | nbits = 8; | |
1062 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
1063 | break; | |
1064 | case 'V': | |
1065 | nbits = 8; | |
1066 | shift = 2; | |
1067 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
20d43018 ILT |
1068 | /* FIXME: This might be lw, or it might be addiu to $sp or |
1069 | $pc. We assume it's load. */ | |
1070 | info->insn_type = dis_dref; | |
1071 | info->data_size = 4; | |
8d67dc30 ILT |
1072 | break; |
1073 | case 'C': | |
1074 | nbits = 8; | |
1075 | shift = 3; | |
1076 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
20d43018 ILT |
1077 | info->insn_type = dis_dref; |
1078 | info->data_size = 8; | |
8d67dc30 ILT |
1079 | break; |
1080 | case 'U': | |
1081 | nbits = 8; | |
1082 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
1083 | extu = 1; | |
1084 | break; | |
1085 | case 'k': | |
1086 | nbits = 8; | |
1087 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
1088 | signedp = 1; | |
1089 | break; | |
1090 | case 'K': | |
1091 | nbits = 8; | |
1092 | shift = 3; | |
1093 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
1094 | signedp = 1; | |
1095 | break; | |
1096 | case 'p': | |
1097 | nbits = 8; | |
1098 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
1099 | signedp = 1; | |
1100 | pcrel = 1; | |
1101 | branch = 1; | |
20d43018 | 1102 | info->insn_type = dis_condbranch; |
8d67dc30 ILT |
1103 | break; |
1104 | case 'q': | |
1105 | nbits = 11; | |
1106 | immed = (l >> MIPS16OP_SH_IMM11) & MIPS16OP_MASK_IMM11; | |
1107 | signedp = 1; | |
1108 | pcrel = 1; | |
1109 | branch = 1; | |
20d43018 | 1110 | info->insn_type = dis_branch; |
8d67dc30 ILT |
1111 | break; |
1112 | case 'A': | |
1113 | nbits = 8; | |
1114 | shift = 2; | |
1115 | immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8; | |
1116 | pcrel = 1; | |
20d43018 ILT |
1117 | /* FIXME: This can be lw or la. We assume it is lw. */ |
1118 | info->insn_type = dis_dref; | |
1119 | info->data_size = 4; | |
8d67dc30 ILT |
1120 | break; |
1121 | case 'B': | |
1122 | nbits = 5; | |
1123 | shift = 3; | |
1124 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
1125 | pcrel = 1; | |
20d43018 ILT |
1126 | info->insn_type = dis_dref; |
1127 | info->data_size = 8; | |
8d67dc30 ILT |
1128 | break; |
1129 | case 'E': | |
1130 | nbits = 5; | |
1131 | shift = 2; | |
1132 | immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5; | |
1133 | pcrel = 1; | |
1134 | break; | |
1135 | default: | |
1136 | abort (); | |
1137 | } | |
1138 | ||
1139 | if (! use_extend) | |
1140 | { | |
1141 | if (signedp && immed >= (1 << (nbits - 1))) | |
1142 | immed -= 1 << nbits; | |
1143 | immed <<= shift; | |
20af0110 | 1144 | if ((type == '<' || type == '>' || type == '[' || type == ']') |
8d67dc30 ILT |
1145 | && immed == 0) |
1146 | immed = 8; | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | if (extbits == 16) | |
1151 | immed |= ((extend & 0x1f) << 11) | (extend & 0x7e0); | |
1152 | else if (extbits == 15) | |
1153 | immed |= ((extend & 0xf) << 11) | (extend & 0x7f0); | |
1154 | else | |
1155 | immed = ((extend >> 6) & 0x1f) | (extend & 0x20); | |
1156 | immed &= (1 << extbits) - 1; | |
1157 | if (! extu && immed >= (1 << (extbits - 1))) | |
1158 | immed -= 1 << extbits; | |
1159 | } | |
1160 | ||
1161 | if (! pcrel) | |
1162 | (*info->fprintf_func) (info->stream, "%d", immed); | |
1163 | else | |
1164 | { | |
c4f19df2 | 1165 | bfd_vma baseaddr; |
8d67dc30 ILT |
1166 | bfd_vma val; |
1167 | ||
1168 | if (branch) | |
c4f19df2 ILT |
1169 | { |
1170 | immed *= 2; | |
1171 | baseaddr = memaddr + 2; | |
1172 | } | |
1173 | else if (use_extend) | |
83af2335 | 1174 | baseaddr = memaddr - 2; |
c4f19df2 ILT |
1175 | else |
1176 | { | |
1177 | int status; | |
1178 | bfd_byte buffer[2]; | |
1179 | ||
1180 | baseaddr = memaddr; | |
1181 | ||
1182 | /* If this instruction is in the delay slot of a jr | |
1183 | instruction, the base address is the address of the | |
1184 | jr instruction. If it is in the delay slot of jalr | |
1185 | instruction, the base address is the address of the | |
1186 | jalr instruction. This test is unreliable: we have | |
1187 | no way of knowing whether the previous word is | |
1188 | instruction or data. */ | |
1189 | status = (*info->read_memory_func) (memaddr - 4, buffer, 2, | |
1190 | info); | |
1191 | if (status == 0 | |
1192 | && (((info->endian == BFD_ENDIAN_BIG | |
1193 | ? bfd_getb16 (buffer) | |
1194 | : bfd_getl16 (buffer)) | |
1195 | & 0xf800) == 0x1800)) | |
1196 | baseaddr = memaddr - 4; | |
1197 | else | |
1198 | { | |
1199 | status = (*info->read_memory_func) (memaddr - 2, buffer, | |
1200 | 2, info); | |
1201 | if (status == 0 | |
1202 | && (((info->endian == BFD_ENDIAN_BIG | |
1203 | ? bfd_getb16 (buffer) | |
1204 | : bfd_getl16 (buffer)) | |
1205 | & 0xf81f) == 0xe800)) | |
1206 | baseaddr = memaddr - 2; | |
1207 | } | |
1208 | } | |
1209 | val = (baseaddr & ~ ((1 << shift) - 1)) + immed; | |
8d67dc30 | 1210 | (*info->print_address_func) (val, info); |
20d43018 | 1211 | info->target = val; |
8d67dc30 ILT |
1212 | } |
1213 | } | |
1214 | break; | |
1215 | ||
1216 | case 'a': | |
1217 | if (! use_extend) | |
1218 | extend = 0; | |
1219 | l = ((l & 0x1f) << 23) | ((l & 0x3e0) << 13) | (extend << 2); | |
1220 | (*info->print_address_func) ((memaddr & 0xf0000000) | l, info); | |
20d43018 ILT |
1221 | info->insn_type = dis_jsr; |
1222 | info->target = (memaddr & 0xf0000000) | l; | |
1223 | info->branch_delay_insns = 1; | |
8d67dc30 ILT |
1224 | break; |
1225 | ||
1226 | case 'l': | |
1227 | case 'L': | |
1228 | { | |
1229 | int need_comma, amask, smask; | |
1230 | ||
1231 | need_comma = 0; | |
1232 | ||
1233 | l = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6; | |
1234 | ||
1235 | amask = (l >> 3) & 7; | |
0d52464c ILT |
1236 | |
1237 | if (amask > 0 && amask < 5) | |
8d67dc30 | 1238 | { |
0d52464c | 1239 | (*info->fprintf_func) (info->stream, "$%s", reg_names[4]); |
8d67dc30 | 1240 | if (amask > 1) |
0d52464c | 1241 | (*info->fprintf_func) (info->stream, "-$%s", |
8d67dc30 ILT |
1242 | reg_names[amask + 3]); |
1243 | need_comma = 1; | |
1244 | } | |
1245 | ||
1246 | smask = (l >> 1) & 3; | |
1247 | if (smask == 3) | |
1248 | { | |
1249 | (*info->fprintf_func) (info->stream, "%s??", | |
1250 | need_comma ? "," : ""); | |
1251 | need_comma = 1; | |
1252 | } | |
1253 | else if (smask > 0) | |
1254 | { | |
0d52464c | 1255 | (*info->fprintf_func) (info->stream, "%s$%s", |
8d67dc30 ILT |
1256 | need_comma ? "," : "", |
1257 | reg_names[16]); | |
1258 | if (smask > 1) | |
0d52464c | 1259 | (*info->fprintf_func) (info->stream, "-$%s", |
8d67dc30 ILT |
1260 | reg_names[smask + 15]); |
1261 | need_comma = 1; | |
1262 | } | |
1263 | ||
1264 | if (l & 1) | |
0d52464c ILT |
1265 | { |
1266 | (*info->fprintf_func) (info->stream, "%s$%s", | |
1267 | need_comma ? "," : "", | |
1268 | reg_names[31]); | |
1269 | need_comma = 1; | |
1270 | } | |
1271 | ||
1272 | if (amask == 5 || amask == 6) | |
1273 | { | |
1274 | (*info->fprintf_func) (info->stream, "%s$f0", | |
1275 | need_comma ? "," : ""); | |
1276 | if (amask == 6) | |
1277 | (*info->fprintf_func) (info->stream, "-$f1"); | |
1278 | } | |
8d67dc30 ILT |
1279 | } |
1280 | break; | |
1281 | ||
1282 | default: | |
1283 | abort (); | |
1284 | } | |
1285 | } |