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PR binutils/13135
[deliverable/binutils-gdb.git] / opcodes / mips-dis.c
1 /* Print mips instructions for GDB, the GNU debugger, or for objdump.
2 Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2012
4 Free Software Foundation, Inc.
5 Contributed by Nobuyuki Hikichi(hikichi@sra.co.jp).
6
7 This file is part of the GNU opcodes library.
8
9 This library 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 3, or (at your option)
12 any later version.
13
14 It is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
17 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., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include "dis-asm.h"
26 #include "libiberty.h"
27 #include "opcode/mips.h"
28 #include "opintl.h"
29
30 /* FIXME: These are needed to figure out if the code is mips16 or
31 not. The low bit of the address is often a good indicator. No
32 symbol table is available when this code runs out in an embedded
33 system as when it is used for disassembler support in a monitor. */
34
35 #if !defined(EMBEDDED_ENV)
36 #define SYMTAB_AVAILABLE 1
37 #include "elf-bfd.h"
38 #include "elf/mips.h"
39 #endif
40
41 /* Mips instructions are at maximum this many bytes long. */
42 #define INSNLEN 4
43
44 \f
45 /* FIXME: These should be shared with gdb somehow. */
46
47 struct mips_cp0sel_name
48 {
49 unsigned int cp0reg;
50 unsigned int sel;
51 const char * const name;
52 };
53
54 /* The mips16 registers. */
55 static const unsigned int mips16_to_32_reg_map[] =
56 {
57 16, 17, 2, 3, 4, 5, 6, 7
58 };
59
60 /* The microMIPS registers with type b. */
61 #define micromips_to_32_reg_b_map mips16_to_32_reg_map
62
63 /* The microMIPS registers with type c. */
64 #define micromips_to_32_reg_c_map mips16_to_32_reg_map
65
66 /* The microMIPS registers with type d. */
67 #define micromips_to_32_reg_d_map mips16_to_32_reg_map
68
69 /* The microMIPS registers with type e. */
70 #define micromips_to_32_reg_e_map mips16_to_32_reg_map
71
72 /* The microMIPS registers with type f. */
73 #define micromips_to_32_reg_f_map mips16_to_32_reg_map
74
75 /* The microMIPS registers with type g. */
76 #define micromips_to_32_reg_g_map mips16_to_32_reg_map
77
78 /* The microMIPS registers with type h. */
79 static const unsigned int micromips_to_32_reg_h_map[] =
80 {
81 5, 5, 6, 4, 4, 4, 4, 4
82 };
83
84 /* The microMIPS registers with type i. */
85 static const unsigned int micromips_to_32_reg_i_map[] =
86 {
87 6, 7, 7, 21, 22, 5, 6, 7
88 };
89
90 /* The microMIPS registers with type j: 32 registers. */
91
92 /* The microMIPS registers with type l. */
93 #define micromips_to_32_reg_l_map mips16_to_32_reg_map
94
95 /* The microMIPS registers with type m. */
96 static const unsigned int micromips_to_32_reg_m_map[] =
97 {
98 0, 17, 2, 3, 16, 18, 19, 20
99 };
100
101 /* The microMIPS registers with type n. */
102 #define micromips_to_32_reg_n_map micromips_to_32_reg_m_map
103
104 /* The microMIPS registers with type p: 32 registers. */
105
106 /* The microMIPS registers with type q. */
107 static const unsigned int micromips_to_32_reg_q_map[] =
108 {
109 0, 17, 2, 3, 4, 5, 6, 7
110 };
111
112 /* reg type s is $29. */
113
114 /* reg type t is the same as the last register. */
115
116 /* reg type y is $31. */
117
118 /* reg type z is $0. */
119
120 /* micromips imm B type. */
121 static const int micromips_imm_b_map[8] =
122 {
123 1, 4, 8, 12, 16, 20, 24, -1
124 };
125
126 /* micromips imm C type. */
127 static const int micromips_imm_c_map[16] =
128 {
129 128, 1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 255, 32768, 65535
130 };
131
132 /* micromips imm D type: (-512..511)<<1. */
133 /* micromips imm E type: (-64..63)<<1. */
134 /* micromips imm F type: (0..63). */
135 /* micromips imm G type: (-1..14). */
136 /* micromips imm H type: (0..15)<<1. */
137 /* micromips imm I type: (-1..126). */
138 /* micromips imm J type: (0..15)<<2. */
139 /* micromips imm L type: (0..15). */
140 /* micromips imm M type: (1..8). */
141 /* micromips imm W type: (0..63)<<2. */
142 /* micromips imm X type: (-8..7). */
143 /* micromips imm Y type: (-258..-3, 2..257)<<2. */
144
145 #define mips16_reg_names(rn) mips_gpr_names[mips16_to_32_reg_map[rn]]
146
147
148 static const char * const mips_gpr_names_numeric[32] =
149 {
150 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
151 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
152 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
153 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
154 };
155
156 static const char * const mips_gpr_names_oldabi[32] =
157 {
158 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
159 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
160 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
161 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
162 };
163
164 static const char * const mips_gpr_names_newabi[32] =
165 {
166 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
167 "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3",
168 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
169 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
170 };
171
172 static const char * const mips_fpr_names_numeric[32] =
173 {
174 "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7",
175 "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15",
176 "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23",
177 "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31"
178 };
179
180 static const char * const mips_fpr_names_32[32] =
181 {
182 "fv0", "fv0f", "fv1", "fv1f", "ft0", "ft0f", "ft1", "ft1f",
183 "ft2", "ft2f", "ft3", "ft3f", "fa0", "fa0f", "fa1", "fa1f",
184 "ft4", "ft4f", "ft5", "ft5f", "fs0", "fs0f", "fs1", "fs1f",
185 "fs2", "fs2f", "fs3", "fs3f", "fs4", "fs4f", "fs5", "fs5f"
186 };
187
188 static const char * const mips_fpr_names_n32[32] =
189 {
190 "fv0", "ft14", "fv1", "ft15", "ft0", "ft1", "ft2", "ft3",
191 "ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3",
192 "fa4", "fa5", "fa6", "fa7", "fs0", "ft8", "fs1", "ft9",
193 "fs2", "ft10", "fs3", "ft11", "fs4", "ft12", "fs5", "ft13"
194 };
195
196 static const char * const mips_fpr_names_64[32] =
197 {
198 "fv0", "ft12", "fv1", "ft13", "ft0", "ft1", "ft2", "ft3",
199 "ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3",
200 "fa4", "fa5", "fa6", "fa7", "ft8", "ft9", "ft10", "ft11",
201 "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7"
202 };
203
204 static const char * const mips_cp0_names_numeric[32] =
205 {
206 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
207 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
208 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
209 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
210 };
211
212 static const char * const mips_cp0_names_r3000[32] =
213 {
214 "c0_index", "c0_random", "c0_entrylo", "$3",
215 "c0_context", "$5", "$6", "$7",
216 "c0_badvaddr", "$9", "c0_entryhi", "$11",
217 "c0_sr", "c0_cause", "c0_epc", "c0_prid",
218 "$16", "$17", "$18", "$19",
219 "$20", "$21", "$22", "$23",
220 "$24", "$25", "$26", "$27",
221 "$28", "$29", "$30", "$31",
222 };
223
224 static const char * const mips_cp0_names_r4000[32] =
225 {
226 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
227 "c0_context", "c0_pagemask", "c0_wired", "$7",
228 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
229 "c0_sr", "c0_cause", "c0_epc", "c0_prid",
230 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
231 "c0_xcontext", "$21", "$22", "$23",
232 "$24", "$25", "c0_ecc", "c0_cacheerr",
233 "c0_taglo", "c0_taghi", "c0_errorepc", "$31",
234 };
235
236 static const char * const mips_cp0_names_mips3264[32] =
237 {
238 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
239 "c0_context", "c0_pagemask", "c0_wired", "$7",
240 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
241 "c0_status", "c0_cause", "c0_epc", "c0_prid",
242 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
243 "c0_xcontext", "$21", "$22", "c0_debug",
244 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
245 "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
246 };
247
248 static const struct mips_cp0sel_name mips_cp0sel_names_mips3264[] =
249 {
250 { 16, 1, "c0_config1" },
251 { 16, 2, "c0_config2" },
252 { 16, 3, "c0_config3" },
253 { 18, 1, "c0_watchlo,1" },
254 { 18, 2, "c0_watchlo,2" },
255 { 18, 3, "c0_watchlo,3" },
256 { 18, 4, "c0_watchlo,4" },
257 { 18, 5, "c0_watchlo,5" },
258 { 18, 6, "c0_watchlo,6" },
259 { 18, 7, "c0_watchlo,7" },
260 { 19, 1, "c0_watchhi,1" },
261 { 19, 2, "c0_watchhi,2" },
262 { 19, 3, "c0_watchhi,3" },
263 { 19, 4, "c0_watchhi,4" },
264 { 19, 5, "c0_watchhi,5" },
265 { 19, 6, "c0_watchhi,6" },
266 { 19, 7, "c0_watchhi,7" },
267 { 25, 1, "c0_perfcnt,1" },
268 { 25, 2, "c0_perfcnt,2" },
269 { 25, 3, "c0_perfcnt,3" },
270 { 25, 4, "c0_perfcnt,4" },
271 { 25, 5, "c0_perfcnt,5" },
272 { 25, 6, "c0_perfcnt,6" },
273 { 25, 7, "c0_perfcnt,7" },
274 { 27, 1, "c0_cacheerr,1" },
275 { 27, 2, "c0_cacheerr,2" },
276 { 27, 3, "c0_cacheerr,3" },
277 { 28, 1, "c0_datalo" },
278 { 29, 1, "c0_datahi" }
279 };
280
281 static const char * const mips_cp0_names_mips3264r2[32] =
282 {
283 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
284 "c0_context", "c0_pagemask", "c0_wired", "c0_hwrena",
285 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
286 "c0_status", "c0_cause", "c0_epc", "c0_prid",
287 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
288 "c0_xcontext", "$21", "$22", "c0_debug",
289 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
290 "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
291 };
292
293 static const struct mips_cp0sel_name mips_cp0sel_names_mips3264r2[] =
294 {
295 { 4, 1, "c0_contextconfig" },
296 { 0, 1, "c0_mvpcontrol" },
297 { 0, 2, "c0_mvpconf0" },
298 { 0, 3, "c0_mvpconf1" },
299 { 1, 1, "c0_vpecontrol" },
300 { 1, 2, "c0_vpeconf0" },
301 { 1, 3, "c0_vpeconf1" },
302 { 1, 4, "c0_yqmask" },
303 { 1, 5, "c0_vpeschedule" },
304 { 1, 6, "c0_vpeschefback" },
305 { 2, 1, "c0_tcstatus" },
306 { 2, 2, "c0_tcbind" },
307 { 2, 3, "c0_tcrestart" },
308 { 2, 4, "c0_tchalt" },
309 { 2, 5, "c0_tccontext" },
310 { 2, 6, "c0_tcschedule" },
311 { 2, 7, "c0_tcschefback" },
312 { 5, 1, "c0_pagegrain" },
313 { 6, 1, "c0_srsconf0" },
314 { 6, 2, "c0_srsconf1" },
315 { 6, 3, "c0_srsconf2" },
316 { 6, 4, "c0_srsconf3" },
317 { 6, 5, "c0_srsconf4" },
318 { 12, 1, "c0_intctl" },
319 { 12, 2, "c0_srsctl" },
320 { 12, 3, "c0_srsmap" },
321 { 15, 1, "c0_ebase" },
322 { 16, 1, "c0_config1" },
323 { 16, 2, "c0_config2" },
324 { 16, 3, "c0_config3" },
325 { 18, 1, "c0_watchlo,1" },
326 { 18, 2, "c0_watchlo,2" },
327 { 18, 3, "c0_watchlo,3" },
328 { 18, 4, "c0_watchlo,4" },
329 { 18, 5, "c0_watchlo,5" },
330 { 18, 6, "c0_watchlo,6" },
331 { 18, 7, "c0_watchlo,7" },
332 { 19, 1, "c0_watchhi,1" },
333 { 19, 2, "c0_watchhi,2" },
334 { 19, 3, "c0_watchhi,3" },
335 { 19, 4, "c0_watchhi,4" },
336 { 19, 5, "c0_watchhi,5" },
337 { 19, 6, "c0_watchhi,6" },
338 { 19, 7, "c0_watchhi,7" },
339 { 23, 1, "c0_tracecontrol" },
340 { 23, 2, "c0_tracecontrol2" },
341 { 23, 3, "c0_usertracedata" },
342 { 23, 4, "c0_tracebpc" },
343 { 25, 1, "c0_perfcnt,1" },
344 { 25, 2, "c0_perfcnt,2" },
345 { 25, 3, "c0_perfcnt,3" },
346 { 25, 4, "c0_perfcnt,4" },
347 { 25, 5, "c0_perfcnt,5" },
348 { 25, 6, "c0_perfcnt,6" },
349 { 25, 7, "c0_perfcnt,7" },
350 { 27, 1, "c0_cacheerr,1" },
351 { 27, 2, "c0_cacheerr,2" },
352 { 27, 3, "c0_cacheerr,3" },
353 { 28, 1, "c0_datalo" },
354 { 28, 2, "c0_taglo1" },
355 { 28, 3, "c0_datalo1" },
356 { 28, 4, "c0_taglo2" },
357 { 28, 5, "c0_datalo2" },
358 { 28, 6, "c0_taglo3" },
359 { 28, 7, "c0_datalo3" },
360 { 29, 1, "c0_datahi" },
361 { 29, 2, "c0_taghi1" },
362 { 29, 3, "c0_datahi1" },
363 { 29, 4, "c0_taghi2" },
364 { 29, 5, "c0_datahi2" },
365 { 29, 6, "c0_taghi3" },
366 { 29, 7, "c0_datahi3" },
367 };
368
369 /* SB-1: MIPS64 (mips_cp0_names_mips3264) with minor mods. */
370 static const char * const mips_cp0_names_sb1[32] =
371 {
372 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
373 "c0_context", "c0_pagemask", "c0_wired", "$7",
374 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
375 "c0_status", "c0_cause", "c0_epc", "c0_prid",
376 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
377 "c0_xcontext", "$21", "$22", "c0_debug",
378 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr_i",
379 "c0_taglo_i", "c0_taghi_i", "c0_errorepc", "c0_desave",
380 };
381
382 static const struct mips_cp0sel_name mips_cp0sel_names_sb1[] =
383 {
384 { 16, 1, "c0_config1" },
385 { 18, 1, "c0_watchlo,1" },
386 { 19, 1, "c0_watchhi,1" },
387 { 22, 0, "c0_perftrace" },
388 { 23, 3, "c0_edebug" },
389 { 25, 1, "c0_perfcnt,1" },
390 { 25, 2, "c0_perfcnt,2" },
391 { 25, 3, "c0_perfcnt,3" },
392 { 25, 4, "c0_perfcnt,4" },
393 { 25, 5, "c0_perfcnt,5" },
394 { 25, 6, "c0_perfcnt,6" },
395 { 25, 7, "c0_perfcnt,7" },
396 { 26, 1, "c0_buserr_pa" },
397 { 27, 1, "c0_cacheerr_d" },
398 { 27, 3, "c0_cacheerr_d_pa" },
399 { 28, 1, "c0_datalo_i" },
400 { 28, 2, "c0_taglo_d" },
401 { 28, 3, "c0_datalo_d" },
402 { 29, 1, "c0_datahi_i" },
403 { 29, 2, "c0_taghi_d" },
404 { 29, 3, "c0_datahi_d" },
405 };
406
407 /* Xlr cop0 register names. */
408 static const char * const mips_cp0_names_xlr[32] = {
409 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
410 "c0_context", "c0_pagemask", "c0_wired", "$7",
411 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
412 "c0_status", "c0_cause", "c0_epc", "c0_prid",
413 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
414 "c0_xcontext", "$21", "$22", "c0_debug",
415 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr_i",
416 "c0_taglo_i", "c0_taghi_i", "c0_errorepc", "c0_desave",
417 };
418
419 /* XLR's CP0 Select Registers. */
420
421 static const struct mips_cp0sel_name mips_cp0sel_names_xlr[] = {
422 { 9, 6, "c0_extintreq" },
423 { 9, 7, "c0_extintmask" },
424 { 15, 1, "c0_ebase" },
425 { 16, 1, "c0_config1" },
426 { 16, 2, "c0_config2" },
427 { 16, 3, "c0_config3" },
428 { 16, 7, "c0_procid2" },
429 { 18, 1, "c0_watchlo,1" },
430 { 18, 2, "c0_watchlo,2" },
431 { 18, 3, "c0_watchlo,3" },
432 { 18, 4, "c0_watchlo,4" },
433 { 18, 5, "c0_watchlo,5" },
434 { 18, 6, "c0_watchlo,6" },
435 { 18, 7, "c0_watchlo,7" },
436 { 19, 1, "c0_watchhi,1" },
437 { 19, 2, "c0_watchhi,2" },
438 { 19, 3, "c0_watchhi,3" },
439 { 19, 4, "c0_watchhi,4" },
440 { 19, 5, "c0_watchhi,5" },
441 { 19, 6, "c0_watchhi,6" },
442 { 19, 7, "c0_watchhi,7" },
443 { 25, 1, "c0_perfcnt,1" },
444 { 25, 2, "c0_perfcnt,2" },
445 { 25, 3, "c0_perfcnt,3" },
446 { 25, 4, "c0_perfcnt,4" },
447 { 25, 5, "c0_perfcnt,5" },
448 { 25, 6, "c0_perfcnt,6" },
449 { 25, 7, "c0_perfcnt,7" },
450 { 27, 1, "c0_cacheerr,1" },
451 { 27, 2, "c0_cacheerr,2" },
452 { 27, 3, "c0_cacheerr,3" },
453 { 28, 1, "c0_datalo" },
454 { 29, 1, "c0_datahi" }
455 };
456
457 static const char * const mips_hwr_names_numeric[32] =
458 {
459 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
460 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
461 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
462 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
463 };
464
465 static const char * const mips_hwr_names_mips3264r2[32] =
466 {
467 "hwr_cpunum", "hwr_synci_step", "hwr_cc", "hwr_ccres",
468 "$4", "$5", "$6", "$7",
469 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
470 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
471 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
472 };
473
474 struct mips_abi_choice
475 {
476 const char * name;
477 const char * const *gpr_names;
478 const char * const *fpr_names;
479 };
480
481 struct mips_abi_choice mips_abi_choices[] =
482 {
483 { "numeric", mips_gpr_names_numeric, mips_fpr_names_numeric },
484 { "32", mips_gpr_names_oldabi, mips_fpr_names_32 },
485 { "n32", mips_gpr_names_newabi, mips_fpr_names_n32 },
486 { "64", mips_gpr_names_newabi, mips_fpr_names_64 },
487 };
488
489 struct mips_arch_choice
490 {
491 const char *name;
492 int bfd_mach_valid;
493 unsigned long bfd_mach;
494 int processor;
495 int isa;
496 const char * const *cp0_names;
497 const struct mips_cp0sel_name *cp0sel_names;
498 unsigned int cp0sel_names_len;
499 const char * const *hwr_names;
500 };
501
502 const struct mips_arch_choice mips_arch_choices[] =
503 {
504 { "numeric", 0, 0, 0, 0,
505 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
506
507 { "r3000", 1, bfd_mach_mips3000, CPU_R3000, ISA_MIPS1,
508 mips_cp0_names_r3000, NULL, 0, mips_hwr_names_numeric },
509 { "r3900", 1, bfd_mach_mips3900, CPU_R3900, ISA_MIPS1,
510 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
511 { "r4000", 1, bfd_mach_mips4000, CPU_R4000, ISA_MIPS3,
512 mips_cp0_names_r4000, NULL, 0, mips_hwr_names_numeric },
513 { "r4010", 1, bfd_mach_mips4010, CPU_R4010, ISA_MIPS2,
514 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
515 { "vr4100", 1, bfd_mach_mips4100, CPU_VR4100, ISA_MIPS3,
516 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
517 { "vr4111", 1, bfd_mach_mips4111, CPU_R4111, ISA_MIPS3,
518 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
519 { "vr4120", 1, bfd_mach_mips4120, CPU_VR4120, ISA_MIPS3,
520 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
521 { "r4300", 1, bfd_mach_mips4300, CPU_R4300, ISA_MIPS3,
522 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
523 { "r4400", 1, bfd_mach_mips4400, CPU_R4400, ISA_MIPS3,
524 mips_cp0_names_r4000, NULL, 0, mips_hwr_names_numeric },
525 { "r4600", 1, bfd_mach_mips4600, CPU_R4600, ISA_MIPS3,
526 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
527 { "r4650", 1, bfd_mach_mips4650, CPU_R4650, ISA_MIPS3,
528 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
529 { "r5000", 1, bfd_mach_mips5000, CPU_R5000, ISA_MIPS4,
530 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
531 { "vr5400", 1, bfd_mach_mips5400, CPU_VR5400, ISA_MIPS4,
532 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
533 { "vr5500", 1, bfd_mach_mips5500, CPU_VR5500, ISA_MIPS4,
534 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
535 { "r6000", 1, bfd_mach_mips6000, CPU_R6000, ISA_MIPS2,
536 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
537 { "rm7000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
538 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
539 { "rm9000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
540 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
541 { "r8000", 1, bfd_mach_mips8000, CPU_R8000, ISA_MIPS4,
542 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
543 { "r10000", 1, bfd_mach_mips10000, CPU_R10000, ISA_MIPS4,
544 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
545 { "r12000", 1, bfd_mach_mips12000, CPU_R12000, ISA_MIPS4,
546 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
547 { "r14000", 1, bfd_mach_mips14000, CPU_R14000, ISA_MIPS4,
548 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
549 { "r16000", 1, bfd_mach_mips16000, CPU_R16000, ISA_MIPS4,
550 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
551 { "mips5", 1, bfd_mach_mips5, CPU_MIPS5, ISA_MIPS5,
552 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
553
554 /* For stock MIPS32, disassemble all applicable MIPS-specified ASEs.
555 Note that MIPS-3D and MDMX are not applicable to MIPS32. (See
556 _MIPS32 Architecture For Programmers Volume I: Introduction to the
557 MIPS32 Architecture_ (MIPS Document Number MD00082, Revision 0.95),
558 page 1. */
559 { "mips32", 1, bfd_mach_mipsisa32, CPU_MIPS32,
560 ISA_MIPS32 | INSN_SMARTMIPS,
561 mips_cp0_names_mips3264,
562 mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
563 mips_hwr_names_numeric },
564
565 { "mips32r2", 1, bfd_mach_mipsisa32r2, CPU_MIPS32R2,
566 (ISA_MIPS32R2 | INSN_SMARTMIPS | INSN_DSP | INSN_DSPR2
567 | INSN_MIPS3D | INSN_MT | INSN_MCU),
568 mips_cp0_names_mips3264r2,
569 mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
570 mips_hwr_names_mips3264r2 },
571
572 /* For stock MIPS64, disassemble all applicable MIPS-specified ASEs. */
573 { "mips64", 1, bfd_mach_mipsisa64, CPU_MIPS64,
574 ISA_MIPS64 | INSN_MIPS3D | INSN_MDMX,
575 mips_cp0_names_mips3264,
576 mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
577 mips_hwr_names_numeric },
578
579 { "mips64r2", 1, bfd_mach_mipsisa64r2, CPU_MIPS64R2,
580 (ISA_MIPS64R2 | INSN_MIPS3D | INSN_DSP | INSN_DSPR2
581 | INSN_DSP64 | INSN_MT | INSN_MDMX | INSN_MCU),
582 mips_cp0_names_mips3264r2,
583 mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
584 mips_hwr_names_mips3264r2 },
585
586 { "sb1", 1, bfd_mach_mips_sb1, CPU_SB1,
587 ISA_MIPS64 | INSN_MIPS3D | INSN_SB1,
588 mips_cp0_names_sb1,
589 mips_cp0sel_names_sb1, ARRAY_SIZE (mips_cp0sel_names_sb1),
590 mips_hwr_names_numeric },
591
592 { "loongson2e", 1, bfd_mach_mips_loongson_2e, CPU_LOONGSON_2E,
593 ISA_MIPS3 | INSN_LOONGSON_2E, mips_cp0_names_numeric,
594 NULL, 0, mips_hwr_names_numeric },
595
596 { "loongson2f", 1, bfd_mach_mips_loongson_2f, CPU_LOONGSON_2F,
597 ISA_MIPS3 | INSN_LOONGSON_2F, mips_cp0_names_numeric,
598 NULL, 0, mips_hwr_names_numeric },
599
600 { "loongson3a", 1, bfd_mach_mips_loongson_3a, CPU_LOONGSON_3A,
601 ISA_MIPS64 | INSN_LOONGSON_3A, mips_cp0_names_numeric,
602 NULL, 0, mips_hwr_names_numeric },
603
604 { "octeon", 1, bfd_mach_mips_octeon, CPU_OCTEON,
605 ISA_MIPS64R2 | INSN_OCTEON, mips_cp0_names_numeric, NULL, 0,
606 mips_hwr_names_numeric },
607
608 { "octeon+", 1, bfd_mach_mips_octeonp, CPU_OCTEONP,
609 ISA_MIPS64R2 | INSN_OCTEONP, mips_cp0_names_numeric,
610 NULL, 0, mips_hwr_names_numeric },
611
612 { "octeon2", 1, bfd_mach_mips_octeon2, CPU_OCTEON2,
613 ISA_MIPS64R2 | INSN_OCTEON2, mips_cp0_names_numeric,
614 NULL, 0, mips_hwr_names_numeric },
615
616 { "xlr", 1, bfd_mach_mips_xlr, CPU_XLR,
617 ISA_MIPS64 | INSN_XLR,
618 mips_cp0_names_xlr,
619 mips_cp0sel_names_xlr, ARRAY_SIZE (mips_cp0sel_names_xlr),
620 mips_hwr_names_numeric },
621
622 /* XLP is mostly like XLR, with the prominent exception it is being
623 MIPS64R2. */
624 { "xlp", 1, bfd_mach_mips_xlr, CPU_XLR,
625 ISA_MIPS64R2 | INSN_XLR,
626 mips_cp0_names_xlr,
627 mips_cp0sel_names_xlr, ARRAY_SIZE (mips_cp0sel_names_xlr),
628 mips_hwr_names_numeric },
629
630 /* This entry, mips16, is here only for ISA/processor selection; do
631 not print its name. */
632 { "", 1, bfd_mach_mips16, CPU_MIPS16, ISA_MIPS3,
633 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
634 };
635
636 /* ISA and processor type to disassemble for, and register names to use.
637 set_default_mips_dis_options and parse_mips_dis_options fill in these
638 values. */
639 static int mips_processor;
640 static int mips_isa;
641 static int micromips_ase;
642 static const char * const *mips_gpr_names;
643 static const char * const *mips_fpr_names;
644 static const char * const *mips_cp0_names;
645 static const struct mips_cp0sel_name *mips_cp0sel_names;
646 static int mips_cp0sel_names_len;
647 static const char * const *mips_hwr_names;
648
649 /* Other options */
650 static int no_aliases; /* If set disassemble as most general inst. */
651 \f
652 static const struct mips_abi_choice *
653 choose_abi_by_name (const char *name, unsigned int namelen)
654 {
655 const struct mips_abi_choice *c;
656 unsigned int i;
657
658 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_abi_choices) && c == NULL; i++)
659 if (strncmp (mips_abi_choices[i].name, name, namelen) == 0
660 && strlen (mips_abi_choices[i].name) == namelen)
661 c = &mips_abi_choices[i];
662
663 return c;
664 }
665
666 static const struct mips_arch_choice *
667 choose_arch_by_name (const char *name, unsigned int namelen)
668 {
669 const struct mips_arch_choice *c = NULL;
670 unsigned int i;
671
672 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
673 if (strncmp (mips_arch_choices[i].name, name, namelen) == 0
674 && strlen (mips_arch_choices[i].name) == namelen)
675 c = &mips_arch_choices[i];
676
677 return c;
678 }
679
680 static const struct mips_arch_choice *
681 choose_arch_by_number (unsigned long mach)
682 {
683 static unsigned long hint_bfd_mach;
684 static const struct mips_arch_choice *hint_arch_choice;
685 const struct mips_arch_choice *c;
686 unsigned int i;
687
688 /* We optimize this because even if the user specifies no
689 flags, this will be done for every instruction! */
690 if (hint_bfd_mach == mach
691 && hint_arch_choice != NULL
692 && hint_arch_choice->bfd_mach == hint_bfd_mach)
693 return hint_arch_choice;
694
695 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
696 {
697 if (mips_arch_choices[i].bfd_mach_valid
698 && mips_arch_choices[i].bfd_mach == mach)
699 {
700 c = &mips_arch_choices[i];
701 hint_bfd_mach = mach;
702 hint_arch_choice = c;
703 }
704 }
705 return c;
706 }
707
708 /* Check if the object uses NewABI conventions. */
709
710 static int
711 is_newabi (Elf_Internal_Ehdr *header)
712 {
713 /* There are no old-style ABIs which use 64-bit ELF. */
714 if (header->e_ident[EI_CLASS] == ELFCLASS64)
715 return 1;
716
717 /* If a 32-bit ELF file, n32 is a new-style ABI. */
718 if ((header->e_flags & EF_MIPS_ABI2) != 0)
719 return 1;
720
721 return 0;
722 }
723
724 /* Check if the object has microMIPS ASE code. */
725
726 static int
727 is_micromips (Elf_Internal_Ehdr *header)
728 {
729 if ((header->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) != 0)
730 return 1;
731
732 return 0;
733 }
734
735 static void
736 set_default_mips_dis_options (struct disassemble_info *info)
737 {
738 const struct mips_arch_choice *chosen_arch;
739
740 /* Defaults: mipsIII/r3000 (?!), no microMIPS ASE (any compressed code
741 is MIPS16 ASE) (o)32-style ("oldabi") GPR names, and numeric FPR,
742 CP0 register, and HWR names. */
743 mips_isa = ISA_MIPS3;
744 mips_processor = CPU_R3000;
745 micromips_ase = 0;
746 mips_gpr_names = mips_gpr_names_oldabi;
747 mips_fpr_names = mips_fpr_names_numeric;
748 mips_cp0_names = mips_cp0_names_numeric;
749 mips_cp0sel_names = NULL;
750 mips_cp0sel_names_len = 0;
751 mips_hwr_names = mips_hwr_names_numeric;
752 no_aliases = 0;
753
754 /* Update settings according to the ELF file header flags. */
755 if (info->flavour == bfd_target_elf_flavour && info->section != NULL)
756 {
757 Elf_Internal_Ehdr *header;
758
759 header = elf_elfheader (info->section->owner);
760 /* If an ELF "newabi" binary, use the n32/(n)64 GPR names. */
761 if (is_newabi (header))
762 mips_gpr_names = mips_gpr_names_newabi;
763 /* If a microMIPS binary, then don't use MIPS16 bindings. */
764 micromips_ase = is_micromips (header);
765 }
766
767 /* Set ISA, architecture, and cp0 register names as best we can. */
768 #if ! SYMTAB_AVAILABLE
769 /* This is running out on a target machine, not in a host tool.
770 FIXME: Where does mips_target_info come from? */
771 target_processor = mips_target_info.processor;
772 mips_isa = mips_target_info.isa;
773 #else
774 chosen_arch = choose_arch_by_number (info->mach);
775 if (chosen_arch != NULL)
776 {
777 mips_processor = chosen_arch->processor;
778 mips_isa = chosen_arch->isa;
779 mips_cp0_names = chosen_arch->cp0_names;
780 mips_cp0sel_names = chosen_arch->cp0sel_names;
781 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
782 mips_hwr_names = chosen_arch->hwr_names;
783 }
784 #endif
785 }
786
787 static void
788 parse_mips_dis_option (const char *option, unsigned int len)
789 {
790 unsigned int i, optionlen, vallen;
791 const char *val;
792 const struct mips_abi_choice *chosen_abi;
793 const struct mips_arch_choice *chosen_arch;
794
795 /* Try to match options that are simple flags */
796 if (CONST_STRNEQ (option, "no-aliases"))
797 {
798 no_aliases = 1;
799 return;
800 }
801
802 /* Look for the = that delimits the end of the option name. */
803 for (i = 0; i < len; i++)
804 if (option[i] == '=')
805 break;
806
807 if (i == 0) /* Invalid option: no name before '='. */
808 return;
809 if (i == len) /* Invalid option: no '='. */
810 return;
811 if (i == (len - 1)) /* Invalid option: no value after '='. */
812 return;
813
814 optionlen = i;
815 val = option + (optionlen + 1);
816 vallen = len - (optionlen + 1);
817
818 if (strncmp ("gpr-names", option, optionlen) == 0
819 && strlen ("gpr-names") == optionlen)
820 {
821 chosen_abi = choose_abi_by_name (val, vallen);
822 if (chosen_abi != NULL)
823 mips_gpr_names = chosen_abi->gpr_names;
824 return;
825 }
826
827 if (strncmp ("fpr-names", option, optionlen) == 0
828 && strlen ("fpr-names") == optionlen)
829 {
830 chosen_abi = choose_abi_by_name (val, vallen);
831 if (chosen_abi != NULL)
832 mips_fpr_names = chosen_abi->fpr_names;
833 return;
834 }
835
836 if (strncmp ("cp0-names", option, optionlen) == 0
837 && strlen ("cp0-names") == optionlen)
838 {
839 chosen_arch = choose_arch_by_name (val, vallen);
840 if (chosen_arch != NULL)
841 {
842 mips_cp0_names = chosen_arch->cp0_names;
843 mips_cp0sel_names = chosen_arch->cp0sel_names;
844 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
845 }
846 return;
847 }
848
849 if (strncmp ("hwr-names", option, optionlen) == 0
850 && strlen ("hwr-names") == optionlen)
851 {
852 chosen_arch = choose_arch_by_name (val, vallen);
853 if (chosen_arch != NULL)
854 mips_hwr_names = chosen_arch->hwr_names;
855 return;
856 }
857
858 if (strncmp ("reg-names", option, optionlen) == 0
859 && strlen ("reg-names") == optionlen)
860 {
861 /* We check both ABI and ARCH here unconditionally, so
862 that "numeric" will do the desirable thing: select
863 numeric register names for all registers. Other than
864 that, a given name probably won't match both. */
865 chosen_abi = choose_abi_by_name (val, vallen);
866 if (chosen_abi != NULL)
867 {
868 mips_gpr_names = chosen_abi->gpr_names;
869 mips_fpr_names = chosen_abi->fpr_names;
870 }
871 chosen_arch = choose_arch_by_name (val, vallen);
872 if (chosen_arch != NULL)
873 {
874 mips_cp0_names = chosen_arch->cp0_names;
875 mips_cp0sel_names = chosen_arch->cp0sel_names;
876 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
877 mips_hwr_names = chosen_arch->hwr_names;
878 }
879 return;
880 }
881
882 /* Invalid option. */
883 }
884
885 static void
886 parse_mips_dis_options (const char *options)
887 {
888 const char *option_end;
889
890 if (options == NULL)
891 return;
892
893 while (*options != '\0')
894 {
895 /* Skip empty options. */
896 if (*options == ',')
897 {
898 options++;
899 continue;
900 }
901
902 /* We know that *options is neither NUL or a comma. */
903 option_end = options + 1;
904 while (*option_end != ',' && *option_end != '\0')
905 option_end++;
906
907 parse_mips_dis_option (options, option_end - options);
908
909 /* Go on to the next one. If option_end points to a comma, it
910 will be skipped above. */
911 options = option_end;
912 }
913 }
914
915 static const struct mips_cp0sel_name *
916 lookup_mips_cp0sel_name (const struct mips_cp0sel_name *names,
917 unsigned int len,
918 unsigned int cp0reg,
919 unsigned int sel)
920 {
921 unsigned int i;
922
923 for (i = 0; i < len; i++)
924 if (names[i].cp0reg == cp0reg && names[i].sel == sel)
925 return &names[i];
926 return NULL;
927 }
928 \f
929 /* Print insn arguments for 32/64-bit code. */
930
931 static void
932 print_insn_args (const char *d,
933 register unsigned long int l,
934 bfd_vma pc,
935 struct disassemble_info *info,
936 const struct mips_opcode *opp)
937 {
938 int op, delta;
939 unsigned int lsb, msb, msbd;
940
941 lsb = 0;
942
943 for (; *d != '\0'; d++)
944 {
945 switch (*d)
946 {
947 case ',':
948 case '(':
949 case ')':
950 case '[':
951 case ']':
952 (*info->fprintf_func) (info->stream, "%c", *d);
953 break;
954
955 case '+':
956 /* Extension character; switch for second char. */
957 d++;
958 switch (*d)
959 {
960 case '\0':
961 /* xgettext:c-format */
962 (*info->fprintf_func) (info->stream,
963 _("# internal error, incomplete extension sequence (+)"));
964 return;
965
966 case 'A':
967 lsb = (l >> OP_SH_SHAMT) & OP_MASK_SHAMT;
968 (*info->fprintf_func) (info->stream, "0x%x", lsb);
969 break;
970
971 case 'B':
972 msb = (l >> OP_SH_INSMSB) & OP_MASK_INSMSB;
973 (*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
974 break;
975
976 case '1':
977 (*info->fprintf_func) (info->stream, "0x%lx",
978 (l >> OP_SH_UDI1) & OP_MASK_UDI1);
979 break;
980
981 case '2':
982 (*info->fprintf_func) (info->stream, "0x%lx",
983 (l >> OP_SH_UDI2) & OP_MASK_UDI2);
984 break;
985
986 case '3':
987 (*info->fprintf_func) (info->stream, "0x%lx",
988 (l >> OP_SH_UDI3) & OP_MASK_UDI3);
989 break;
990
991 case '4':
992 (*info->fprintf_func) (info->stream, "0x%lx",
993 (l >> OP_SH_UDI4) & OP_MASK_UDI4);
994 break;
995
996 case 'C':
997 case 'H':
998 msbd = (l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD;
999 (*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
1000 break;
1001
1002 case 'D':
1003 {
1004 const struct mips_cp0sel_name *n;
1005 unsigned int cp0reg, sel;
1006
1007 cp0reg = (l >> OP_SH_RD) & OP_MASK_RD;
1008 sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
1009
1010 /* CP0 register including 'sel' code for mtcN (et al.), to be
1011 printed textually if known. If not known, print both
1012 CP0 register name and sel numerically since CP0 register
1013 with sel 0 may have a name unrelated to register being
1014 printed. */
1015 n = lookup_mips_cp0sel_name(mips_cp0sel_names,
1016 mips_cp0sel_names_len, cp0reg, sel);
1017 if (n != NULL)
1018 (*info->fprintf_func) (info->stream, "%s", n->name);
1019 else
1020 (*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
1021 break;
1022 }
1023
1024 case 'E':
1025 lsb = ((l >> OP_SH_SHAMT) & OP_MASK_SHAMT) + 32;
1026 (*info->fprintf_func) (info->stream, "0x%x", lsb);
1027 break;
1028
1029 case 'F':
1030 msb = ((l >> OP_SH_INSMSB) & OP_MASK_INSMSB) + 32;
1031 (*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
1032 break;
1033
1034 case 'G':
1035 msbd = ((l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD) + 32;
1036 (*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
1037 break;
1038
1039 case 't': /* Coprocessor 0 reg name */
1040 (*info->fprintf_func) (info->stream, "%s",
1041 mips_cp0_names[(l >> OP_SH_RT) &
1042 OP_MASK_RT]);
1043 break;
1044
1045 case 'T': /* Coprocessor 0 reg name */
1046 {
1047 const struct mips_cp0sel_name *n;
1048 unsigned int cp0reg, sel;
1049
1050 cp0reg = (l >> OP_SH_RT) & OP_MASK_RT;
1051 sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
1052
1053 /* CP0 register including 'sel' code for mftc0, to be
1054 printed textually if known. If not known, print both
1055 CP0 register name and sel numerically since CP0 register
1056 with sel 0 may have a name unrelated to register being
1057 printed. */
1058 n = lookup_mips_cp0sel_name(mips_cp0sel_names,
1059 mips_cp0sel_names_len, cp0reg, sel);
1060 if (n != NULL)
1061 (*info->fprintf_func) (info->stream, "%s", n->name);
1062 else
1063 (*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
1064 break;
1065 }
1066
1067 case 'x': /* bbit bit index */
1068 (*info->fprintf_func) (info->stream, "0x%lx",
1069 (l >> OP_SH_BBITIND) & OP_MASK_BBITIND);
1070 break;
1071
1072 case 'p': /* cins, cins32, exts and exts32 position */
1073 (*info->fprintf_func) (info->stream, "0x%lx",
1074 (l >> OP_SH_CINSPOS) & OP_MASK_CINSPOS);
1075 break;
1076
1077 case 's': /* cins and exts length-minus-one */
1078 (*info->fprintf_func) (info->stream, "0x%lx",
1079 (l >> OP_SH_CINSLM1) & OP_MASK_CINSLM1);
1080 break;
1081
1082 case 'S': /* cins32 and exts32 length-minus-one field */
1083 (*info->fprintf_func) (info->stream, "0x%lx",
1084 (l >> OP_SH_CINSLM1) & OP_MASK_CINSLM1);
1085 break;
1086
1087 case 'Q': /* seqi/snei immediate field */
1088 op = (l >> OP_SH_SEQI) & OP_MASK_SEQI;
1089 /* Sign-extend it. */
1090 op = (op ^ 512) - 512;
1091 (*info->fprintf_func) (info->stream, "%d", op);
1092 break;
1093
1094 case 'a': /* 8-bit signed offset in bit 6 */
1095 delta = (l >> OP_SH_OFFSET_A) & OP_MASK_OFFSET_A;
1096 if (delta & 0x80)
1097 delta |= ~OP_MASK_OFFSET_A;
1098 (*info->fprintf_func) (info->stream, "%d", delta);
1099 break;
1100
1101 case 'b': /* 8-bit signed offset in bit 3 */
1102 delta = (l >> OP_SH_OFFSET_B) & OP_MASK_OFFSET_B;
1103 if (delta & 0x80)
1104 delta |= ~OP_MASK_OFFSET_B;
1105 (*info->fprintf_func) (info->stream, "%d", delta);
1106 break;
1107
1108 case 'c': /* 9-bit signed offset in bit 6 */
1109 delta = (l >> OP_SH_OFFSET_C) & OP_MASK_OFFSET_C;
1110 if (delta & 0x100)
1111 delta |= ~OP_MASK_OFFSET_C;
1112 /* Left shift 4 bits to print the real offset. */
1113 (*info->fprintf_func) (info->stream, "%d", delta << 4);
1114 break;
1115
1116 case 'z':
1117 (*info->fprintf_func) (info->stream, "%s",
1118 mips_gpr_names[(l >> OP_SH_RZ) & OP_MASK_RZ]);
1119 break;
1120
1121 case 'Z':
1122 (*info->fprintf_func) (info->stream, "%s",
1123 mips_fpr_names[(l >> OP_SH_FZ) & OP_MASK_FZ]);
1124 break;
1125
1126 default:
1127 /* xgettext:c-format */
1128 (*info->fprintf_func) (info->stream,
1129 _("# internal error, undefined extension sequence (+%c)"),
1130 *d);
1131 return;
1132 }
1133 break;
1134
1135 case '2':
1136 (*info->fprintf_func) (info->stream, "0x%lx",
1137 (l >> OP_SH_BP) & OP_MASK_BP);
1138 break;
1139
1140 case '3':
1141 (*info->fprintf_func) (info->stream, "0x%lx",
1142 (l >> OP_SH_SA3) & OP_MASK_SA3);
1143 break;
1144
1145 case '4':
1146 (*info->fprintf_func) (info->stream, "0x%lx",
1147 (l >> OP_SH_SA4) & OP_MASK_SA4);
1148 break;
1149
1150 case '5':
1151 (*info->fprintf_func) (info->stream, "0x%lx",
1152 (l >> OP_SH_IMM8) & OP_MASK_IMM8);
1153 break;
1154
1155 case '6':
1156 (*info->fprintf_func) (info->stream, "0x%lx",
1157 (l >> OP_SH_RS) & OP_MASK_RS);
1158 break;
1159
1160 case '7':
1161 (*info->fprintf_func) (info->stream, "$ac%ld",
1162 (l >> OP_SH_DSPACC) & OP_MASK_DSPACC);
1163 break;
1164
1165 case '8':
1166 (*info->fprintf_func) (info->stream, "0x%lx",
1167 (l >> OP_SH_WRDSP) & OP_MASK_WRDSP);
1168 break;
1169
1170 case '9':
1171 (*info->fprintf_func) (info->stream, "$ac%ld",
1172 (l >> OP_SH_DSPACC_S) & OP_MASK_DSPACC_S);
1173 break;
1174
1175 case '0': /* dsp 6-bit signed immediate in bit 20 */
1176 delta = ((l >> OP_SH_DSPSFT) & OP_MASK_DSPSFT);
1177 if (delta & 0x20) /* test sign bit */
1178 delta |= ~OP_MASK_DSPSFT;
1179 (*info->fprintf_func) (info->stream, "%d", delta);
1180 break;
1181
1182 case ':': /* dsp 7-bit signed immediate in bit 19 */
1183 delta = ((l >> OP_SH_DSPSFT_7) & OP_MASK_DSPSFT_7);
1184 if (delta & 0x40) /* test sign bit */
1185 delta |= ~OP_MASK_DSPSFT_7;
1186 (*info->fprintf_func) (info->stream, "%d", delta);
1187 break;
1188
1189 case '~':
1190 delta = (l >> OP_SH_OFFSET12) & OP_MASK_OFFSET12;
1191 if (delta & 0x800)
1192 delta |= ~0x7ff;
1193 (*info->fprintf_func) (info->stream, "%d", delta);
1194 break;
1195
1196 case '\\':
1197 (*info->fprintf_func) (info->stream, "0x%lx",
1198 (l >> OP_SH_3BITPOS) & OP_MASK_3BITPOS);
1199 break;
1200
1201 case '\'':
1202 (*info->fprintf_func) (info->stream, "0x%lx",
1203 (l >> OP_SH_RDDSP) & OP_MASK_RDDSP);
1204 break;
1205
1206 case '@': /* dsp 10-bit signed immediate in bit 16 */
1207 delta = ((l >> OP_SH_IMM10) & OP_MASK_IMM10);
1208 if (delta & 0x200) /* test sign bit */
1209 delta |= ~OP_MASK_IMM10;
1210 (*info->fprintf_func) (info->stream, "%d", delta);
1211 break;
1212
1213 case '!':
1214 (*info->fprintf_func) (info->stream, "%ld",
1215 (l >> OP_SH_MT_U) & OP_MASK_MT_U);
1216 break;
1217
1218 case '$':
1219 (*info->fprintf_func) (info->stream, "%ld",
1220 (l >> OP_SH_MT_H) & OP_MASK_MT_H);
1221 break;
1222
1223 case '*':
1224 (*info->fprintf_func) (info->stream, "$ac%ld",
1225 (l >> OP_SH_MTACC_T) & OP_MASK_MTACC_T);
1226 break;
1227
1228 case '&':
1229 (*info->fprintf_func) (info->stream, "$ac%ld",
1230 (l >> OP_SH_MTACC_D) & OP_MASK_MTACC_D);
1231 break;
1232
1233 case 'g':
1234 /* Coprocessor register for CTTC1, MTTC2, MTHC2, CTTC2. */
1235 (*info->fprintf_func) (info->stream, "$%ld",
1236 (l >> OP_SH_RD) & OP_MASK_RD);
1237 break;
1238
1239 case 's':
1240 case 'b':
1241 case 'r':
1242 case 'v':
1243 (*info->fprintf_func) (info->stream, "%s",
1244 mips_gpr_names[(l >> OP_SH_RS) & OP_MASK_RS]);
1245 break;
1246
1247 case 't':
1248 case 'w':
1249 (*info->fprintf_func) (info->stream, "%s",
1250 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1251 break;
1252
1253 case 'i':
1254 case 'u':
1255 (*info->fprintf_func) (info->stream, "0x%lx",
1256 (l >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE);
1257 break;
1258
1259 case 'j': /* Same as i, but sign-extended. */
1260 case 'o':
1261 delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
1262 if (delta & 0x8000)
1263 delta |= ~0xffff;
1264 (*info->fprintf_func) (info->stream, "%d",
1265 delta);
1266 break;
1267
1268 case 'h':
1269 (*info->fprintf_func) (info->stream, "0x%x",
1270 (unsigned int) ((l >> OP_SH_PREFX)
1271 & OP_MASK_PREFX));
1272 break;
1273
1274 case 'k':
1275 (*info->fprintf_func) (info->stream, "0x%x",
1276 (unsigned int) ((l >> OP_SH_CACHE)
1277 & OP_MASK_CACHE));
1278 break;
1279
1280 case 'a':
1281 info->target = (((pc + 4) & ~(bfd_vma) 0x0fffffff)
1282 | (((l >> OP_SH_TARGET) & OP_MASK_TARGET) << 2));
1283 /* For gdb disassembler, force odd address on jalx. */
1284 if (info->flavour == bfd_target_unknown_flavour
1285 && strcmp (opp->name, "jalx") == 0)
1286 info->target |= 1;
1287 (*info->print_address_func) (info->target, info);
1288 break;
1289
1290 case 'p':
1291 /* Sign extend the displacement. */
1292 delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
1293 if (delta & 0x8000)
1294 delta |= ~0xffff;
1295 info->target = (delta << 2) + pc + INSNLEN;
1296 (*info->print_address_func) (info->target, info);
1297 break;
1298
1299 case 'd':
1300 (*info->fprintf_func) (info->stream, "%s",
1301 mips_gpr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1302 break;
1303
1304 case 'U':
1305 {
1306 /* First check for both rd and rt being equal. */
1307 unsigned int reg = (l >> OP_SH_RD) & OP_MASK_RD;
1308 if (reg == ((l >> OP_SH_RT) & OP_MASK_RT))
1309 (*info->fprintf_func) (info->stream, "%s",
1310 mips_gpr_names[reg]);
1311 else
1312 {
1313 /* If one is zero use the other. */
1314 if (reg == 0)
1315 (*info->fprintf_func) (info->stream, "%s",
1316 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1317 else if (((l >> OP_SH_RT) & OP_MASK_RT) == 0)
1318 (*info->fprintf_func) (info->stream, "%s",
1319 mips_gpr_names[reg]);
1320 else /* Bogus, result depends on processor. */
1321 (*info->fprintf_func) (info->stream, "%s or %s",
1322 mips_gpr_names[reg],
1323 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1324 }
1325 }
1326 break;
1327
1328 case 'z':
1329 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
1330 break;
1331
1332 case '<':
1333 case '1':
1334 (*info->fprintf_func) (info->stream, "0x%lx",
1335 (l >> OP_SH_SHAMT) & OP_MASK_SHAMT);
1336 break;
1337
1338 case 'c':
1339 (*info->fprintf_func) (info->stream, "0x%lx",
1340 (l >> OP_SH_CODE) & OP_MASK_CODE);
1341 break;
1342
1343 case 'q':
1344 (*info->fprintf_func) (info->stream, "0x%lx",
1345 (l >> OP_SH_CODE2) & OP_MASK_CODE2);
1346 break;
1347
1348 case 'C':
1349 (*info->fprintf_func) (info->stream, "0x%lx",
1350 (l >> OP_SH_COPZ) & OP_MASK_COPZ);
1351 break;
1352
1353 case 'B':
1354 (*info->fprintf_func) (info->stream, "0x%lx",
1355 (l >> OP_SH_CODE20) & OP_MASK_CODE20);
1356 break;
1357
1358 case 'J':
1359 (*info->fprintf_func) (info->stream, "0x%lx",
1360 (l >> OP_SH_CODE19) & OP_MASK_CODE19);
1361 break;
1362
1363 case 'S':
1364 case 'V':
1365 (*info->fprintf_func) (info->stream, "%s",
1366 mips_fpr_names[(l >> OP_SH_FS) & OP_MASK_FS]);
1367 break;
1368
1369 case 'T':
1370 case 'W':
1371 (*info->fprintf_func) (info->stream, "%s",
1372 mips_fpr_names[(l >> OP_SH_FT) & OP_MASK_FT]);
1373 break;
1374
1375 case 'D':
1376 (*info->fprintf_func) (info->stream, "%s",
1377 mips_fpr_names[(l >> OP_SH_FD) & OP_MASK_FD]);
1378 break;
1379
1380 case 'R':
1381 (*info->fprintf_func) (info->stream, "%s",
1382 mips_fpr_names[(l >> OP_SH_FR) & OP_MASK_FR]);
1383 break;
1384
1385 case 'E':
1386 /* Coprocessor register for lwcN instructions, et al.
1387
1388 Note that there is no load/store cp0 instructions, and
1389 that FPU (cp1) instructions disassemble this field using
1390 'T' format. Therefore, until we gain understanding of
1391 cp2 register names, we can simply print the register
1392 numbers. */
1393 (*info->fprintf_func) (info->stream, "$%ld",
1394 (l >> OP_SH_RT) & OP_MASK_RT);
1395 break;
1396
1397 case 'G':
1398 /* Coprocessor register for mtcN instructions, et al. Note
1399 that FPU (cp1) instructions disassemble this field using
1400 'S' format. Therefore, we only need to worry about cp0,
1401 cp2, and cp3. */
1402 op = (l >> OP_SH_OP) & OP_MASK_OP;
1403 if (op == OP_OP_COP0)
1404 (*info->fprintf_func) (info->stream, "%s",
1405 mips_cp0_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1406 else
1407 (*info->fprintf_func) (info->stream, "$%ld",
1408 (l >> OP_SH_RD) & OP_MASK_RD);
1409 break;
1410
1411 case 'K':
1412 (*info->fprintf_func) (info->stream, "%s",
1413 mips_hwr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1414 break;
1415
1416 case 'N':
1417 (*info->fprintf_func) (info->stream,
1418 ((opp->pinfo & (FP_D | FP_S)) != 0
1419 ? "$fcc%ld" : "$cc%ld"),
1420 (l >> OP_SH_BCC) & OP_MASK_BCC);
1421 break;
1422
1423 case 'M':
1424 (*info->fprintf_func) (info->stream, "$fcc%ld",
1425 (l >> OP_SH_CCC) & OP_MASK_CCC);
1426 break;
1427
1428 case 'P':
1429 (*info->fprintf_func) (info->stream, "%ld",
1430 (l >> OP_SH_PERFREG) & OP_MASK_PERFREG);
1431 break;
1432
1433 case 'e':
1434 (*info->fprintf_func) (info->stream, "%ld",
1435 (l >> OP_SH_VECBYTE) & OP_MASK_VECBYTE);
1436 break;
1437
1438 case '%':
1439 (*info->fprintf_func) (info->stream, "%ld",
1440 (l >> OP_SH_VECALIGN) & OP_MASK_VECALIGN);
1441 break;
1442
1443 case 'H':
1444 (*info->fprintf_func) (info->stream, "%ld",
1445 (l >> OP_SH_SEL) & OP_MASK_SEL);
1446 break;
1447
1448 case 'O':
1449 (*info->fprintf_func) (info->stream, "%ld",
1450 (l >> OP_SH_ALN) & OP_MASK_ALN);
1451 break;
1452
1453 case 'Q':
1454 {
1455 unsigned int vsel = (l >> OP_SH_VSEL) & OP_MASK_VSEL;
1456
1457 if ((vsel & 0x10) == 0)
1458 {
1459 int fmt;
1460
1461 vsel &= 0x0f;
1462 for (fmt = 0; fmt < 3; fmt++, vsel >>= 1)
1463 if ((vsel & 1) == 0)
1464 break;
1465 (*info->fprintf_func) (info->stream, "$v%ld[%d]",
1466 (l >> OP_SH_FT) & OP_MASK_FT,
1467 vsel >> 1);
1468 }
1469 else if ((vsel & 0x08) == 0)
1470 {
1471 (*info->fprintf_func) (info->stream, "$v%ld",
1472 (l >> OP_SH_FT) & OP_MASK_FT);
1473 }
1474 else
1475 {
1476 (*info->fprintf_func) (info->stream, "0x%lx",
1477 (l >> OP_SH_FT) & OP_MASK_FT);
1478 }
1479 }
1480 break;
1481
1482 case 'X':
1483 (*info->fprintf_func) (info->stream, "$v%ld",
1484 (l >> OP_SH_FD) & OP_MASK_FD);
1485 break;
1486
1487 case 'Y':
1488 (*info->fprintf_func) (info->stream, "$v%ld",
1489 (l >> OP_SH_FS) & OP_MASK_FS);
1490 break;
1491
1492 case 'Z':
1493 (*info->fprintf_func) (info->stream, "$v%ld",
1494 (l >> OP_SH_FT) & OP_MASK_FT);
1495 break;
1496
1497 default:
1498 /* xgettext:c-format */
1499 (*info->fprintf_func) (info->stream,
1500 _("# internal error, undefined modifier (%c)"),
1501 *d);
1502 return;
1503 }
1504 }
1505 }
1506 \f
1507 /* Print the mips instruction at address MEMADDR in debugged memory,
1508 on using INFO. Returns length of the instruction, in bytes, which is
1509 always INSNLEN. BIGENDIAN must be 1 if this is big-endian code, 0 if
1510 this is little-endian code. */
1511
1512 static int
1513 print_insn_mips (bfd_vma memaddr,
1514 unsigned long int word,
1515 struct disassemble_info *info)
1516 {
1517 const struct mips_opcode *op;
1518 static bfd_boolean init = 0;
1519 static const struct mips_opcode *mips_hash[OP_MASK_OP + 1];
1520
1521 /* Build a hash table to shorten the search time. */
1522 if (! init)
1523 {
1524 unsigned int i;
1525
1526 for (i = 0; i <= OP_MASK_OP; i++)
1527 {
1528 for (op = mips_opcodes; op < &mips_opcodes[NUMOPCODES]; op++)
1529 {
1530 if (op->pinfo == INSN_MACRO
1531 || (no_aliases && (op->pinfo2 & INSN2_ALIAS)))
1532 continue;
1533 if (i == ((op->match >> OP_SH_OP) & OP_MASK_OP))
1534 {
1535 mips_hash[i] = op;
1536 break;
1537 }
1538 }
1539 }
1540
1541 init = 1;
1542 }
1543
1544 info->bytes_per_chunk = INSNLEN;
1545 info->display_endian = info->endian;
1546 info->insn_info_valid = 1;
1547 info->branch_delay_insns = 0;
1548 info->data_size = 0;
1549 info->insn_type = dis_nonbranch;
1550 info->target = 0;
1551 info->target2 = 0;
1552
1553 op = mips_hash[(word >> OP_SH_OP) & OP_MASK_OP];
1554 if (op != NULL)
1555 {
1556 for (; op < &mips_opcodes[NUMOPCODES]; op++)
1557 {
1558 if (op->pinfo != INSN_MACRO
1559 && !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
1560 && (word & op->mask) == op->match)
1561 {
1562 const char *d;
1563
1564 /* We always allow to disassemble the jalx instruction. */
1565 if (! OPCODE_IS_MEMBER (op, mips_isa, mips_processor)
1566 && strcmp (op->name, "jalx"))
1567 continue;
1568
1569 /* Figure out instruction type and branch delay information. */
1570 if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
1571 {
1572 if ((op->pinfo & (INSN_WRITE_GPR_31
1573 | INSN_WRITE_GPR_D)) != 0)
1574 info->insn_type = dis_jsr;
1575 else
1576 info->insn_type = dis_branch;
1577 info->branch_delay_insns = 1;
1578 }
1579 else if ((op->pinfo & (INSN_COND_BRANCH_DELAY
1580 | INSN_COND_BRANCH_LIKELY)) != 0)
1581 {
1582 if ((op->pinfo & INSN_WRITE_GPR_31) != 0)
1583 info->insn_type = dis_condjsr;
1584 else
1585 info->insn_type = dis_condbranch;
1586 info->branch_delay_insns = 1;
1587 }
1588 else if ((op->pinfo & (INSN_STORE_MEMORY
1589 | INSN_LOAD_MEMORY_DELAY)) != 0)
1590 info->insn_type = dis_dref;
1591
1592 (*info->fprintf_func) (info->stream, "%s", op->name);
1593
1594 d = op->args;
1595 if (d != NULL && *d != '\0')
1596 {
1597 (*info->fprintf_func) (info->stream, "\t");
1598 print_insn_args (d, word, memaddr, info, op);
1599 }
1600
1601 return INSNLEN;
1602 }
1603 }
1604 }
1605
1606 /* Handle undefined instructions. */
1607 info->insn_type = dis_noninsn;
1608 (*info->fprintf_func) (info->stream, "0x%lx", word);
1609 return INSNLEN;
1610 }
1611 \f
1612 /* Disassemble an operand for a mips16 instruction. */
1613
1614 static void
1615 print_mips16_insn_arg (char type,
1616 const struct mips_opcode *op,
1617 int l,
1618 bfd_boolean use_extend,
1619 int extend,
1620 bfd_vma memaddr,
1621 struct disassemble_info *info)
1622 {
1623 switch (type)
1624 {
1625 case ',':
1626 case '(':
1627 case ')':
1628 (*info->fprintf_func) (info->stream, "%c", type);
1629 break;
1630
1631 case 'y':
1632 case 'w':
1633 (*info->fprintf_func) (info->stream, "%s",
1634 mips16_reg_names(((l >> MIPS16OP_SH_RY)
1635 & MIPS16OP_MASK_RY)));
1636 break;
1637
1638 case 'x':
1639 case 'v':
1640 (*info->fprintf_func) (info->stream, "%s",
1641 mips16_reg_names(((l >> MIPS16OP_SH_RX)
1642 & MIPS16OP_MASK_RX)));
1643 break;
1644
1645 case 'z':
1646 (*info->fprintf_func) (info->stream, "%s",
1647 mips16_reg_names(((l >> MIPS16OP_SH_RZ)
1648 & MIPS16OP_MASK_RZ)));
1649 break;
1650
1651 case 'Z':
1652 (*info->fprintf_func) (info->stream, "%s",
1653 mips16_reg_names(((l >> MIPS16OP_SH_MOVE32Z)
1654 & MIPS16OP_MASK_MOVE32Z)));
1655 break;
1656
1657 case '0':
1658 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
1659 break;
1660
1661 case 'S':
1662 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[29]);
1663 break;
1664
1665 case 'P':
1666 (*info->fprintf_func) (info->stream, "$pc");
1667 break;
1668
1669 case 'R':
1670 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[31]);
1671 break;
1672
1673 case 'X':
1674 (*info->fprintf_func) (info->stream, "%s",
1675 mips_gpr_names[((l >> MIPS16OP_SH_REGR32)
1676 & MIPS16OP_MASK_REGR32)]);
1677 break;
1678
1679 case 'Y':
1680 (*info->fprintf_func) (info->stream, "%s",
1681 mips_gpr_names[MIPS16OP_EXTRACT_REG32R (l)]);
1682 break;
1683
1684 case '<':
1685 case '>':
1686 case '[':
1687 case ']':
1688 case '4':
1689 case '5':
1690 case 'H':
1691 case 'W':
1692 case 'D':
1693 case 'j':
1694 case '6':
1695 case '8':
1696 case 'V':
1697 case 'C':
1698 case 'U':
1699 case 'k':
1700 case 'K':
1701 case 'p':
1702 case 'q':
1703 case 'A':
1704 case 'B':
1705 case 'E':
1706 {
1707 int immed, nbits, shift, signedp, extbits, pcrel, extu, branch;
1708
1709 shift = 0;
1710 signedp = 0;
1711 extbits = 16;
1712 pcrel = 0;
1713 extu = 0;
1714 branch = 0;
1715 switch (type)
1716 {
1717 case '<':
1718 nbits = 3;
1719 immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
1720 extbits = 5;
1721 extu = 1;
1722 break;
1723 case '>':
1724 nbits = 3;
1725 immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
1726 extbits = 5;
1727 extu = 1;
1728 break;
1729 case '[':
1730 nbits = 3;
1731 immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
1732 extbits = 6;
1733 extu = 1;
1734 break;
1735 case ']':
1736 nbits = 3;
1737 immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
1738 extbits = 6;
1739 extu = 1;
1740 break;
1741 case '4':
1742 nbits = 4;
1743 immed = (l >> MIPS16OP_SH_IMM4) & MIPS16OP_MASK_IMM4;
1744 signedp = 1;
1745 extbits = 15;
1746 break;
1747 case '5':
1748 nbits = 5;
1749 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1750 info->insn_type = dis_dref;
1751 info->data_size = 1;
1752 break;
1753 case 'H':
1754 nbits = 5;
1755 shift = 1;
1756 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1757 info->insn_type = dis_dref;
1758 info->data_size = 2;
1759 break;
1760 case 'W':
1761 nbits = 5;
1762 shift = 2;
1763 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1764 if ((op->pinfo & MIPS16_INSN_READ_PC) == 0
1765 && (op->pinfo & MIPS16_INSN_READ_SP) == 0)
1766 {
1767 info->insn_type = dis_dref;
1768 info->data_size = 4;
1769 }
1770 break;
1771 case 'D':
1772 nbits = 5;
1773 shift = 3;
1774 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1775 info->insn_type = dis_dref;
1776 info->data_size = 8;
1777 break;
1778 case 'j':
1779 nbits = 5;
1780 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1781 signedp = 1;
1782 break;
1783 case '6':
1784 nbits = 6;
1785 immed = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
1786 break;
1787 case '8':
1788 nbits = 8;
1789 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1790 break;
1791 case 'V':
1792 nbits = 8;
1793 shift = 2;
1794 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1795 /* FIXME: This might be lw, or it might be addiu to $sp or
1796 $pc. We assume it's load. */
1797 info->insn_type = dis_dref;
1798 info->data_size = 4;
1799 break;
1800 case 'C':
1801 nbits = 8;
1802 shift = 3;
1803 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1804 info->insn_type = dis_dref;
1805 info->data_size = 8;
1806 break;
1807 case 'U':
1808 nbits = 8;
1809 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1810 extu = 1;
1811 break;
1812 case 'k':
1813 nbits = 8;
1814 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1815 signedp = 1;
1816 break;
1817 case 'K':
1818 nbits = 8;
1819 shift = 3;
1820 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1821 signedp = 1;
1822 break;
1823 case 'p':
1824 nbits = 8;
1825 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1826 signedp = 1;
1827 pcrel = 1;
1828 branch = 1;
1829 break;
1830 case 'q':
1831 nbits = 11;
1832 immed = (l >> MIPS16OP_SH_IMM11) & MIPS16OP_MASK_IMM11;
1833 signedp = 1;
1834 pcrel = 1;
1835 branch = 1;
1836 break;
1837 case 'A':
1838 nbits = 8;
1839 shift = 2;
1840 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1841 pcrel = 1;
1842 /* FIXME: This can be lw or la. We assume it is lw. */
1843 info->insn_type = dis_dref;
1844 info->data_size = 4;
1845 break;
1846 case 'B':
1847 nbits = 5;
1848 shift = 3;
1849 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1850 pcrel = 1;
1851 info->insn_type = dis_dref;
1852 info->data_size = 8;
1853 break;
1854 case 'E':
1855 nbits = 5;
1856 shift = 2;
1857 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1858 pcrel = 1;
1859 break;
1860 default:
1861 abort ();
1862 }
1863
1864 if (! use_extend)
1865 {
1866 if (signedp && immed >= (1 << (nbits - 1)))
1867 immed -= 1 << nbits;
1868 immed <<= shift;
1869 if ((type == '<' || type == '>' || type == '[' || type == ']')
1870 && immed == 0)
1871 immed = 8;
1872 }
1873 else
1874 {
1875 if (extbits == 16)
1876 immed |= ((extend & 0x1f) << 11) | (extend & 0x7e0);
1877 else if (extbits == 15)
1878 immed |= ((extend & 0xf) << 11) | (extend & 0x7f0);
1879 else
1880 immed = ((extend >> 6) & 0x1f) | (extend & 0x20);
1881 immed &= (1 << extbits) - 1;
1882 if (! extu && immed >= (1 << (extbits - 1)))
1883 immed -= 1 << extbits;
1884 }
1885
1886 if (! pcrel)
1887 (*info->fprintf_func) (info->stream, "%d", immed);
1888 else
1889 {
1890 bfd_vma baseaddr;
1891
1892 if (branch)
1893 {
1894 immed *= 2;
1895 baseaddr = memaddr + 2;
1896 }
1897 else if (use_extend)
1898 baseaddr = memaddr - 2;
1899 else
1900 {
1901 int status;
1902 bfd_byte buffer[2];
1903
1904 baseaddr = memaddr;
1905
1906 /* If this instruction is in the delay slot of a jr
1907 instruction, the base address is the address of the
1908 jr instruction. If it is in the delay slot of jalr
1909 instruction, the base address is the address of the
1910 jalr instruction. This test is unreliable: we have
1911 no way of knowing whether the previous word is
1912 instruction or data. */
1913 status = (*info->read_memory_func) (memaddr - 4, buffer, 2,
1914 info);
1915 if (status == 0
1916 && (((info->endian == BFD_ENDIAN_BIG
1917 ? bfd_getb16 (buffer)
1918 : bfd_getl16 (buffer))
1919 & 0xf800) == 0x1800))
1920 baseaddr = memaddr - 4;
1921 else
1922 {
1923 status = (*info->read_memory_func) (memaddr - 2, buffer,
1924 2, info);
1925 if (status == 0
1926 && (((info->endian == BFD_ENDIAN_BIG
1927 ? bfd_getb16 (buffer)
1928 : bfd_getl16 (buffer))
1929 & 0xf81f) == 0xe800))
1930 baseaddr = memaddr - 2;
1931 }
1932 }
1933 info->target = (baseaddr & ~((1 << shift) - 1)) + immed;
1934 if (pcrel && branch
1935 && info->flavour == bfd_target_unknown_flavour)
1936 /* For gdb disassembler, maintain odd address. */
1937 info->target |= 1;
1938 (*info->print_address_func) (info->target, info);
1939 }
1940 }
1941 break;
1942
1943 case 'a':
1944 {
1945 int jalx = l & 0x400;
1946
1947 if (! use_extend)
1948 extend = 0;
1949 l = ((l & 0x1f) << 23) | ((l & 0x3e0) << 13) | (extend << 2);
1950 if (!jalx && info->flavour == bfd_target_unknown_flavour)
1951 /* For gdb disassembler, maintain odd address. */
1952 l |= 1;
1953 }
1954 info->target = ((memaddr + 4) & ~(bfd_vma) 0x0fffffff) | l;
1955 (*info->print_address_func) (info->target, info);
1956 break;
1957
1958 case 'l':
1959 case 'L':
1960 {
1961 int need_comma, amask, smask;
1962
1963 need_comma = 0;
1964
1965 l = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
1966
1967 amask = (l >> 3) & 7;
1968
1969 if (amask > 0 && amask < 5)
1970 {
1971 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
1972 if (amask > 1)
1973 (*info->fprintf_func) (info->stream, "-%s",
1974 mips_gpr_names[amask + 3]);
1975 need_comma = 1;
1976 }
1977
1978 smask = (l >> 1) & 3;
1979 if (smask == 3)
1980 {
1981 (*info->fprintf_func) (info->stream, "%s??",
1982 need_comma ? "," : "");
1983 need_comma = 1;
1984 }
1985 else if (smask > 0)
1986 {
1987 (*info->fprintf_func) (info->stream, "%s%s",
1988 need_comma ? "," : "",
1989 mips_gpr_names[16]);
1990 if (smask > 1)
1991 (*info->fprintf_func) (info->stream, "-%s",
1992 mips_gpr_names[smask + 15]);
1993 need_comma = 1;
1994 }
1995
1996 if (l & 1)
1997 {
1998 (*info->fprintf_func) (info->stream, "%s%s",
1999 need_comma ? "," : "",
2000 mips_gpr_names[31]);
2001 need_comma = 1;
2002 }
2003
2004 if (amask == 5 || amask == 6)
2005 {
2006 (*info->fprintf_func) (info->stream, "%s$f0",
2007 need_comma ? "," : "");
2008 if (amask == 6)
2009 (*info->fprintf_func) (info->stream, "-$f1");
2010 }
2011 }
2012 break;
2013
2014 case 'm':
2015 case 'M':
2016 /* MIPS16e save/restore. */
2017 {
2018 int need_comma = 0;
2019 int amask, args, statics;
2020 int nsreg, smask;
2021 int framesz;
2022 int i, j;
2023
2024 l = l & 0x7f;
2025 if (use_extend)
2026 l |= extend << 16;
2027
2028 amask = (l >> 16) & 0xf;
2029 if (amask == MIPS16_ALL_ARGS)
2030 {
2031 args = 4;
2032 statics = 0;
2033 }
2034 else if (amask == MIPS16_ALL_STATICS)
2035 {
2036 args = 0;
2037 statics = 4;
2038 }
2039 else
2040 {
2041 args = amask >> 2;
2042 statics = amask & 3;
2043 }
2044
2045 if (args > 0) {
2046 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
2047 if (args > 1)
2048 (*info->fprintf_func) (info->stream, "-%s",
2049 mips_gpr_names[4 + args - 1]);
2050 need_comma = 1;
2051 }
2052
2053 framesz = (((l >> 16) & 0xf0) | (l & 0x0f)) * 8;
2054 if (framesz == 0 && !use_extend)
2055 framesz = 128;
2056
2057 (*info->fprintf_func) (info->stream, "%s%d",
2058 need_comma ? "," : "",
2059 framesz);
2060
2061 if (l & 0x40) /* $ra */
2062 (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[31]);
2063
2064 nsreg = (l >> 24) & 0x7;
2065 smask = 0;
2066 if (l & 0x20) /* $s0 */
2067 smask |= 1 << 0;
2068 if (l & 0x10) /* $s1 */
2069 smask |= 1 << 1;
2070 if (nsreg > 0) /* $s2-$s8 */
2071 smask |= ((1 << nsreg) - 1) << 2;
2072
2073 /* Find first set static reg bit. */
2074 for (i = 0; i < 9; i++)
2075 {
2076 if (smask & (1 << i))
2077 {
2078 (*info->fprintf_func) (info->stream, ",%s",
2079 mips_gpr_names[i == 8 ? 30 : (16 + i)]);
2080 /* Skip over string of set bits. */
2081 for (j = i; smask & (2 << j); j++)
2082 continue;
2083 if (j > i)
2084 (*info->fprintf_func) (info->stream, "-%s",
2085 mips_gpr_names[j == 8 ? 30 : (16 + j)]);
2086 i = j + 1;
2087 }
2088 }
2089
2090 /* Statics $ax - $a3. */
2091 if (statics == 1)
2092 (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[7]);
2093 else if (statics > 0)
2094 (*info->fprintf_func) (info->stream, ",%s-%s",
2095 mips_gpr_names[7 - statics + 1],
2096 mips_gpr_names[7]);
2097 }
2098 break;
2099
2100 default:
2101 /* xgettext:c-format */
2102 (*info->fprintf_func)
2103 (info->stream,
2104 _("# internal disassembler error, unrecognised modifier (%c)"),
2105 type);
2106 abort ();
2107 }
2108 }
2109
2110 /* Disassemble mips16 instructions. */
2111
2112 static int
2113 print_insn_mips16 (bfd_vma memaddr, struct disassemble_info *info)
2114 {
2115 int status;
2116 bfd_byte buffer[2];
2117 int length;
2118 int insn;
2119 bfd_boolean use_extend;
2120 int extend = 0;
2121 const struct mips_opcode *op, *opend;
2122
2123 info->bytes_per_chunk = 2;
2124 info->display_endian = info->endian;
2125 info->insn_info_valid = 1;
2126 info->branch_delay_insns = 0;
2127 info->data_size = 0;
2128 info->insn_type = dis_nonbranch;
2129 info->target = 0;
2130 info->target2 = 0;
2131
2132 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
2133 if (status != 0)
2134 {
2135 (*info->memory_error_func) (status, memaddr, info);
2136 return -1;
2137 }
2138
2139 length = 2;
2140
2141 if (info->endian == BFD_ENDIAN_BIG)
2142 insn = bfd_getb16 (buffer);
2143 else
2144 insn = bfd_getl16 (buffer);
2145
2146 /* Handle the extend opcode specially. */
2147 use_extend = FALSE;
2148 if ((insn & 0xf800) == 0xf000)
2149 {
2150 use_extend = TRUE;
2151 extend = insn & 0x7ff;
2152
2153 memaddr += 2;
2154
2155 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
2156 if (status != 0)
2157 {
2158 (*info->fprintf_func) (info->stream, "extend 0x%x",
2159 (unsigned int) extend);
2160 (*info->memory_error_func) (status, memaddr, info);
2161 return -1;
2162 }
2163
2164 if (info->endian == BFD_ENDIAN_BIG)
2165 insn = bfd_getb16 (buffer);
2166 else
2167 insn = bfd_getl16 (buffer);
2168
2169 /* Check for an extend opcode followed by an extend opcode. */
2170 if ((insn & 0xf800) == 0xf000)
2171 {
2172 (*info->fprintf_func) (info->stream, "extend 0x%x",
2173 (unsigned int) extend);
2174 info->insn_type = dis_noninsn;
2175 return length;
2176 }
2177
2178 length += 2;
2179 }
2180
2181 /* FIXME: Should probably use a hash table on the major opcode here. */
2182
2183 opend = mips16_opcodes + bfd_mips16_num_opcodes;
2184 for (op = mips16_opcodes; op < opend; op++)
2185 {
2186 if (op->pinfo != INSN_MACRO
2187 && !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
2188 && (insn & op->mask) == op->match)
2189 {
2190 const char *s;
2191
2192 if (strchr (op->args, 'a') != NULL)
2193 {
2194 if (use_extend)
2195 {
2196 (*info->fprintf_func) (info->stream, "extend 0x%x",
2197 (unsigned int) extend);
2198 info->insn_type = dis_noninsn;
2199 return length - 2;
2200 }
2201
2202 use_extend = FALSE;
2203
2204 memaddr += 2;
2205
2206 status = (*info->read_memory_func) (memaddr, buffer, 2,
2207 info);
2208 if (status == 0)
2209 {
2210 use_extend = TRUE;
2211 if (info->endian == BFD_ENDIAN_BIG)
2212 extend = bfd_getb16 (buffer);
2213 else
2214 extend = bfd_getl16 (buffer);
2215 length += 2;
2216 }
2217 }
2218
2219 (*info->fprintf_func) (info->stream, "%s", op->name);
2220 if (op->args[0] != '\0')
2221 (*info->fprintf_func) (info->stream, "\t");
2222
2223 for (s = op->args; *s != '\0'; s++)
2224 {
2225 if (*s == ','
2226 && s[1] == 'w'
2227 && (((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)
2228 == ((insn >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY)))
2229 {
2230 /* Skip the register and the comma. */
2231 ++s;
2232 continue;
2233 }
2234 if (*s == ','
2235 && s[1] == 'v'
2236 && (((insn >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ)
2237 == ((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)))
2238 {
2239 /* Skip the register and the comma. */
2240 ++s;
2241 continue;
2242 }
2243 print_mips16_insn_arg (*s, op, insn, use_extend, extend, memaddr,
2244 info);
2245 }
2246
2247 /* Figure out branch instruction type and delay slot information. */
2248 if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
2249 info->branch_delay_insns = 1;
2250 if ((op->pinfo & (INSN_UNCOND_BRANCH_DELAY
2251 | MIPS16_INSN_UNCOND_BRANCH)) != 0)
2252 {
2253 if ((op->pinfo & INSN_WRITE_GPR_31) != 0)
2254 info->insn_type = dis_jsr;
2255 else
2256 info->insn_type = dis_branch;
2257 }
2258 else if ((op->pinfo & MIPS16_INSN_COND_BRANCH) != 0)
2259 info->insn_type = dis_condbranch;
2260
2261 return length;
2262 }
2263 }
2264
2265 if (use_extend)
2266 (*info->fprintf_func) (info->stream, "0x%x", extend | 0xf000);
2267 (*info->fprintf_func) (info->stream, "0x%x", insn);
2268 info->insn_type = dis_noninsn;
2269
2270 return length;
2271 }
2272
2273 /* Disassemble microMIPS instructions. */
2274
2275 static int
2276 print_insn_micromips (bfd_vma memaddr, struct disassemble_info *info)
2277 {
2278 const fprintf_ftype infprintf = info->fprintf_func;
2279 const struct mips_opcode *op, *opend;
2280 unsigned int lsb, msbd, msb;
2281 void *is = info->stream;
2282 unsigned int regno;
2283 bfd_byte buffer[2];
2284 int lastregno = 0;
2285 int higher;
2286 int length;
2287 int status;
2288 int delta;
2289 int immed;
2290 int insn;
2291
2292 lsb = 0;
2293
2294 info->bytes_per_chunk = 2;
2295 info->display_endian = info->endian;
2296 info->insn_info_valid = 1;
2297 info->branch_delay_insns = 0;
2298 info->data_size = 0;
2299 info->insn_type = dis_nonbranch;
2300 info->target = 0;
2301 info->target2 = 0;
2302
2303 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
2304 if (status != 0)
2305 {
2306 (*info->memory_error_func) (status, memaddr, info);
2307 return -1;
2308 }
2309
2310 length = 2;
2311
2312 if (info->endian == BFD_ENDIAN_BIG)
2313 insn = bfd_getb16 (buffer);
2314 else
2315 insn = bfd_getl16 (buffer);
2316
2317 if ((insn & 0xfc00) == 0x7c00)
2318 {
2319 /* This is a 48-bit microMIPS instruction. */
2320 higher = insn;
2321
2322 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
2323 if (status != 0)
2324 {
2325 infprintf (is, "micromips 0x%x", higher);
2326 (*info->memory_error_func) (status, memaddr + 2, info);
2327 return -1;
2328 }
2329 if (info->endian == BFD_ENDIAN_BIG)
2330 insn = bfd_getb16 (buffer);
2331 else
2332 insn = bfd_getl16 (buffer);
2333 higher = (higher << 16) | insn;
2334
2335 status = (*info->read_memory_func) (memaddr + 4, buffer, 2, info);
2336 if (status != 0)
2337 {
2338 infprintf (is, "micromips 0x%x", higher);
2339 (*info->memory_error_func) (status, memaddr + 4, info);
2340 return -1;
2341 }
2342 if (info->endian == BFD_ENDIAN_BIG)
2343 insn = bfd_getb16 (buffer);
2344 else
2345 insn = bfd_getl16 (buffer);
2346 infprintf (is, "0x%x%04x (48-bit insn)", higher, insn);
2347
2348 info->insn_type = dis_noninsn;
2349 return 6;
2350 }
2351 else if ((insn & 0x1c00) == 0x0000 || (insn & 0x1000) == 0x1000)
2352 {
2353 /* This is a 32-bit microMIPS instruction. */
2354 higher = insn;
2355
2356 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
2357 if (status != 0)
2358 {
2359 infprintf (is, "micromips 0x%x", higher);
2360 (*info->memory_error_func) (status, memaddr + 2, info);
2361 return -1;
2362 }
2363
2364 if (info->endian == BFD_ENDIAN_BIG)
2365 insn = bfd_getb16 (buffer);
2366 else
2367 insn = bfd_getl16 (buffer);
2368
2369 insn = insn | (higher << 16);
2370
2371 length += 2;
2372 }
2373
2374 /* FIXME: Should probably use a hash table on the major opcode here. */
2375
2376 #define GET_OP(insn, field) \
2377 (((insn) >> MICROMIPSOP_SH_##field) & MICROMIPSOP_MASK_##field)
2378 opend = micromips_opcodes + bfd_micromips_num_opcodes;
2379 for (op = micromips_opcodes; op < opend; op++)
2380 {
2381 if (op->pinfo != INSN_MACRO
2382 && !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
2383 && (insn & op->mask) == op->match
2384 && ((length == 2 && (op->mask & 0xffff0000) == 0)
2385 || (length == 4 && (op->mask & 0xffff0000) != 0)))
2386 {
2387 const char *s;
2388
2389 infprintf (is, "%s", op->name);
2390 if (op->args[0] != '\0')
2391 infprintf (is, "\t");
2392
2393 for (s = op->args; *s != '\0'; s++)
2394 {
2395 switch (*s)
2396 {
2397 case ',':
2398 case '(':
2399 case ')':
2400 infprintf (is, "%c", *s);
2401 break;
2402
2403 case '.':
2404 delta = GET_OP (insn, OFFSET10);
2405 if (delta & 0x200)
2406 delta |= ~0x3ff;
2407 infprintf (is, "%d", delta);
2408 break;
2409
2410 case '1':
2411 infprintf (is, "0x%x", GET_OP (insn, STYPE));
2412 break;
2413
2414 case '<':
2415 infprintf (is, "0x%x", GET_OP (insn, SHAMT));
2416 break;
2417
2418 case '\\':
2419 infprintf (is, "0x%x", GET_OP (insn, 3BITPOS));
2420 break;
2421
2422 case '|':
2423 infprintf (is, "0x%x", GET_OP (insn, TRAP));
2424 break;
2425
2426 case '~':
2427 delta = GET_OP (insn, OFFSET12);
2428 if (delta & 0x800)
2429 delta |= ~0x7ff;
2430 infprintf (is, "%d", delta);
2431 break;
2432
2433 case 'a':
2434 if (strcmp (op->name, "jalx") == 0)
2435 info->target = (((memaddr + 4) & ~(bfd_vma) 0x0fffffff)
2436 | (GET_OP (insn, TARGET) << 2));
2437 else
2438 info->target = (((memaddr + 4) & ~(bfd_vma) 0x07ffffff)
2439 | ((GET_OP (insn, TARGET)) << 1));
2440 /* For gdb disassembler, force odd address on jalx. */
2441 if (info->flavour == bfd_target_unknown_flavour
2442 && strcmp (op->name, "jalx") == 0)
2443 info->target |= 1;
2444 (*info->print_address_func) (info->target, info);
2445 break;
2446
2447 case 'b':
2448 case 'r':
2449 case 's':
2450 case 'v':
2451 infprintf (is, "%s", mips_gpr_names[GET_OP (insn, RS)]);
2452 break;
2453
2454 case 'c':
2455 infprintf (is, "0x%x", GET_OP (insn, CODE));
2456 break;
2457
2458 case 'd':
2459 infprintf (is, "%s", mips_gpr_names[GET_OP (insn, RD)]);
2460 break;
2461
2462 case 'h':
2463 infprintf (is, "0x%x", GET_OP (insn, PREFX));
2464 break;
2465
2466 case 'i':
2467 case 'u':
2468 infprintf (is, "0x%x", GET_OP (insn, IMMEDIATE));
2469 break;
2470
2471 case 'j': /* Same as i, but sign-extended. */
2472 case 'o':
2473 delta = (GET_OP (insn, DELTA) ^ 0x8000) - 0x8000;
2474 infprintf (is, "%d", delta);
2475 break;
2476
2477 case 'k':
2478 infprintf (is, "0x%x", GET_OP (insn, CACHE));
2479 break;
2480
2481 case 'n':
2482 {
2483 int s_reg_encode;
2484
2485 immed = GET_OP (insn, RT);
2486 s_reg_encode = immed & 0xf;
2487 if (s_reg_encode != 0)
2488 {
2489 if (s_reg_encode == 1)
2490 infprintf (is, "%s", mips_gpr_names[16]);
2491 else if (s_reg_encode < 9)
2492 infprintf (is, "%s-%s",
2493 mips_gpr_names[16],
2494 mips_gpr_names[15 + s_reg_encode]);
2495 else if (s_reg_encode == 9)
2496 infprintf (is, "%s-%s,%s",
2497 mips_gpr_names[16],
2498 mips_gpr_names[23],
2499 mips_gpr_names[30]);
2500 else
2501 infprintf (is, "UNKNOWN");
2502 }
2503
2504 if (immed & 0x10) /* For ra. */
2505 {
2506 if (s_reg_encode == 0)
2507 infprintf (is, "%s", mips_gpr_names[31]);
2508 else
2509 infprintf (is, ",%s", mips_gpr_names[31]);
2510 }
2511 break;
2512 }
2513
2514 case 'p':
2515 /* Sign-extend the displacement. */
2516 delta = (GET_OP (insn, DELTA) ^ 0x8000) - 0x8000;
2517 info->target = (delta << 1) + memaddr + length;
2518 (*info->print_address_func) (info->target, info);
2519 break;
2520
2521 case 'q':
2522 infprintf (is, "0x%x", GET_OP (insn, CODE2));
2523 break;
2524
2525 case 't':
2526 case 'w':
2527 infprintf (is, "%s", mips_gpr_names[GET_OP (insn, RT)]);
2528 break;
2529
2530 case 'y':
2531 infprintf (is, "%s", mips_gpr_names[GET_OP (insn, RS3)]);
2532 break;
2533
2534 case 'z':
2535 infprintf (is, "%s", mips_gpr_names[0]);
2536 break;
2537
2538 case 'B':
2539 infprintf (is, "0x%x", GET_OP (insn, CODE10));
2540 break;
2541
2542 case 'C':
2543 infprintf (is, "0x%x", GET_OP (insn, COPZ));
2544 break;
2545
2546 case 'D':
2547 infprintf (is, "%s", mips_fpr_names[GET_OP (insn, FD)]);
2548 break;
2549
2550 case 'E':
2551 /* Coprocessor register for lwcN instructions, et al.
2552
2553 Note that there is no load/store cp0 instructions, and
2554 that FPU (cp1) instructions disassemble this field using
2555 'T' format. Therefore, until we gain understanding of
2556 cp2 register names, we can simply print the register
2557 numbers. */
2558 infprintf (is, "$%d", GET_OP (insn, RT));
2559 break;
2560
2561 case 'G':
2562 /* Coprocessor register for mtcN instructions, et al. Note
2563 that FPU (cp1) instructions disassemble this field using
2564 'S' format. Therefore, we only need to worry about cp0,
2565 cp2, and cp3.
2566 The microMIPS encoding does not have a coprocessor
2567 identifier field as such, so we must work out the
2568 coprocessor number by looking at the opcode. */
2569 switch (insn
2570 & ~((MICROMIPSOP_MASK_RT << MICROMIPSOP_SH_RT)
2571 | (MICROMIPSOP_MASK_RS << MICROMIPSOP_SH_RS)))
2572 {
2573 case 0x000000fc: /* mfc0 */
2574 case 0x000002fc: /* mtc0 */
2575 case 0x580000fc: /* dmfc0 */
2576 case 0x580002fc: /* dmtc0 */
2577 infprintf (is, "%s", mips_cp0_names[GET_OP (insn, RS)]);
2578 break;
2579 default:
2580 infprintf (is, "$%d", GET_OP (insn, RS));
2581 break;
2582 }
2583 break;
2584
2585 case 'H':
2586 infprintf (is, "%d", GET_OP (insn, SEL));
2587 break;
2588
2589 case 'K':
2590 infprintf (is, "%s", mips_hwr_names[GET_OP (insn, RS)]);
2591 break;
2592
2593 case 'M':
2594 infprintf (is, "$fcc%d", GET_OP (insn, CCC));
2595 break;
2596
2597 case 'N':
2598 infprintf (is,
2599 (op->pinfo & (FP_D | FP_S)) != 0
2600 ? "$fcc%d" : "$cc%d",
2601 GET_OP (insn, BCC));
2602 break;
2603
2604 case 'R':
2605 infprintf (is, "%s", mips_fpr_names[GET_OP (insn, FR)]);
2606 break;
2607
2608 case 'S':
2609 case 'V':
2610 infprintf (is, "%s", mips_fpr_names[GET_OP (insn, FS)]);
2611 break;
2612
2613 case 'T':
2614 infprintf (is, "%s", mips_fpr_names[GET_OP (insn, FT)]);
2615 break;
2616
2617 case '+':
2618 /* Extension character; switch for second char. */
2619 s++;
2620 switch (*s)
2621 {
2622 case 'A':
2623 lsb = GET_OP (insn, EXTLSB);
2624 infprintf (is, "0x%x", lsb);
2625 break;
2626
2627 case 'B':
2628 msb = GET_OP (insn, INSMSB);
2629 infprintf (is, "0x%x", msb - lsb + 1);
2630 break;
2631
2632 case 'C':
2633 case 'H':
2634 msbd = GET_OP (insn, EXTMSBD);
2635 infprintf (is, "0x%x", msbd + 1);
2636 break;
2637
2638 case 'D':
2639 {
2640 const struct mips_cp0sel_name *n;
2641 unsigned int cp0reg, sel;
2642
2643 cp0reg = GET_OP (insn, RS);
2644 sel = GET_OP (insn, SEL);
2645
2646 /* CP0 register including 'sel' code for mtcN
2647 (et al.), to be printed textually if known.
2648 If not known, print both CP0 register name and
2649 sel numerically since CP0 register with sel 0 may
2650 have a name unrelated to register being printed. */
2651 n = lookup_mips_cp0sel_name (mips_cp0sel_names,
2652 mips_cp0sel_names_len,
2653 cp0reg, sel);
2654 if (n != NULL)
2655 infprintf (is, "%s", n->name);
2656 else
2657 infprintf (is, "$%d,%d", cp0reg, sel);
2658 break;
2659 }
2660
2661 case 'E':
2662 lsb = GET_OP (insn, EXTLSB) + 32;
2663 infprintf (is, "0x%x", lsb);
2664 break;
2665
2666 case 'F':
2667 msb = GET_OP (insn, INSMSB) + 32;
2668 infprintf (is, "0x%x", msb - lsb + 1);
2669 break;
2670
2671 case 'G':
2672 msbd = GET_OP (insn, EXTMSBD) + 32;
2673 infprintf (is, "0x%x", msbd + 1);
2674 break;
2675
2676 default:
2677 /* xgettext:c-format */
2678 infprintf (is,
2679 _("# internal disassembler error, "
2680 "unrecognized modifier (+%c)"),
2681 *s);
2682 abort ();
2683 }
2684 break;
2685
2686 case 'm':
2687 /* Extension character; switch for second char. */
2688 s++;
2689 switch (*s)
2690 {
2691 case 'a': /* global pointer. */
2692 infprintf (is, "%s", mips_gpr_names[28]);
2693 break;
2694
2695 case 'b':
2696 regno = micromips_to_32_reg_b_map[GET_OP (insn, MB)];
2697 infprintf (is, "%s", mips_gpr_names[regno]);
2698 break;
2699
2700 case 'c':
2701 regno = micromips_to_32_reg_c_map[GET_OP (insn, MC)];
2702 infprintf (is, "%s", mips_gpr_names[regno]);
2703 break;
2704
2705 case 'd':
2706 regno = micromips_to_32_reg_d_map[GET_OP (insn, MD)];
2707 infprintf (is, "%s", mips_gpr_names[regno]);
2708 break;
2709
2710 case 'e':
2711 regno = micromips_to_32_reg_e_map[GET_OP (insn, ME)];
2712 infprintf (is, "%s", mips_gpr_names[regno]);
2713 break;
2714
2715 case 'f':
2716 /* Save lastregno for "mt" to print out later. */
2717 lastregno = micromips_to_32_reg_f_map[GET_OP (insn, MF)];
2718 infprintf (is, "%s", mips_gpr_names[lastregno]);
2719 break;
2720
2721 case 'g':
2722 regno = micromips_to_32_reg_g_map[GET_OP (insn, MG)];
2723 infprintf (is, "%s", mips_gpr_names[regno]);
2724 break;
2725
2726 case 'h':
2727 regno = micromips_to_32_reg_h_map[GET_OP (insn, MH)];
2728 infprintf (is, "%s", mips_gpr_names[regno]);
2729 break;
2730
2731 case 'i':
2732 regno = micromips_to_32_reg_i_map[GET_OP (insn, MI)];
2733 infprintf (is, "%s", mips_gpr_names[regno]);
2734 break;
2735
2736 case 'j':
2737 infprintf (is, "%s", mips_gpr_names[GET_OP (insn, MJ)]);
2738 break;
2739
2740 case 'l':
2741 regno = micromips_to_32_reg_l_map[GET_OP (insn, ML)];
2742 infprintf (is, "%s", mips_gpr_names[regno]);
2743 break;
2744
2745 case 'm':
2746 regno = micromips_to_32_reg_m_map[GET_OP (insn, MM)];
2747 infprintf (is, "%s", mips_gpr_names[regno]);
2748 break;
2749
2750 case 'n':
2751 regno = micromips_to_32_reg_n_map[GET_OP (insn, MN)];
2752 infprintf (is, "%s", mips_gpr_names[regno]);
2753 break;
2754
2755 case 'p':
2756 /* Save lastregno for "mt" to print out later. */
2757 lastregno = GET_OP (insn, MP);
2758 infprintf (is, "%s", mips_gpr_names[lastregno]);
2759 break;
2760
2761 case 'q':
2762 regno = micromips_to_32_reg_q_map[GET_OP (insn, MQ)];
2763 infprintf (is, "%s", mips_gpr_names[regno]);
2764 break;
2765
2766 case 'r': /* program counter. */
2767 infprintf (is, "$pc");
2768 break;
2769
2770 case 's': /* stack pointer. */
2771 lastregno = 29;
2772 infprintf (is, "%s", mips_gpr_names[29]);
2773 break;
2774
2775 case 't':
2776 infprintf (is, "%s", mips_gpr_names[lastregno]);
2777 break;
2778
2779 case 'z': /* $0. */
2780 infprintf (is, "%s", mips_gpr_names[0]);
2781 break;
2782
2783 case 'A':
2784 /* Sign-extend the immediate. */
2785 immed = ((GET_OP (insn, IMMA) ^ 0x40) - 0x40) << 2;
2786 infprintf (is, "%d", immed);
2787 break;
2788
2789 case 'B':
2790 immed = micromips_imm_b_map[GET_OP (insn, IMMB)];
2791 infprintf (is, "%d", immed);
2792 break;
2793
2794 case 'C':
2795 immed = micromips_imm_c_map[GET_OP (insn, IMMC)];
2796 infprintf (is, "0x%x", immed);
2797 break;
2798
2799 case 'D':
2800 /* Sign-extend the displacement. */
2801 delta = (GET_OP (insn, IMMD) ^ 0x200) - 0x200;
2802 info->target = (delta << 1) + memaddr + length;
2803 (*info->print_address_func) (info->target, info);
2804 break;
2805
2806 case 'E':
2807 /* Sign-extend the displacement. */
2808 delta = (GET_OP (insn, IMME) ^ 0x40) - 0x40;
2809 info->target = (delta << 1) + memaddr + length;
2810 (*info->print_address_func) (info->target, info);
2811 break;
2812
2813 case 'F':
2814 immed = GET_OP (insn, IMMF);
2815 infprintf (is, "0x%x", immed);
2816 break;
2817
2818 case 'G':
2819 immed = (insn >> MICROMIPSOP_SH_IMMG) + 1;
2820 immed = (immed & MICROMIPSOP_MASK_IMMG) - 1;
2821 infprintf (is, "%d", immed);
2822 break;
2823
2824 case 'H':
2825 immed = GET_OP (insn, IMMH) << 1;
2826 infprintf (is, "%d", immed);
2827 break;
2828
2829 case 'I':
2830 immed = (insn >> MICROMIPSOP_SH_IMMI) + 1;
2831 immed = (immed & MICROMIPSOP_MASK_IMMI) - 1;
2832 infprintf (is, "%d", immed);
2833 break;
2834
2835 case 'J':
2836 immed = GET_OP (insn, IMMJ) << 2;
2837 infprintf (is, "%d", immed);
2838 break;
2839
2840 case 'L':
2841 immed = GET_OP (insn, IMML);
2842 infprintf (is, "%d", immed);
2843 break;
2844
2845 case 'M':
2846 immed = (insn >> MICROMIPSOP_SH_IMMM) - 1;
2847 immed = (immed & MICROMIPSOP_MASK_IMMM) + 1;
2848 infprintf (is, "%d", immed);
2849 break;
2850
2851 case 'N':
2852 immed = GET_OP (insn, IMMN);
2853 if (immed == 0)
2854 infprintf (is, "%s,%s",
2855 mips_gpr_names[16],
2856 mips_gpr_names[31]);
2857 else
2858 infprintf (is, "%s-%s,%s",
2859 mips_gpr_names[16],
2860 mips_gpr_names[16 + immed],
2861 mips_gpr_names[31]);
2862 break;
2863
2864 case 'O':
2865 immed = GET_OP (insn, IMMO);
2866 infprintf (is, "0x%x", immed);
2867 break;
2868
2869 case 'P':
2870 immed = GET_OP (insn, IMMP) << 2;
2871 infprintf (is, "%d", immed);
2872 break;
2873
2874 case 'Q':
2875 /* Sign-extend the immediate. */
2876 immed = (GET_OP (insn, IMMQ) ^ 0x400000) - 0x400000;
2877 immed <<= 2;
2878 infprintf (is, "%d", immed);
2879 break;
2880
2881 case 'U':
2882 immed = GET_OP (insn, IMMU) << 2;
2883 infprintf (is, "%d", immed);
2884 break;
2885
2886 case 'W':
2887 immed = GET_OP (insn, IMMW) << 2;
2888 infprintf (is, "%d", immed);
2889 break;
2890
2891 case 'X':
2892 /* Sign-extend the immediate. */
2893 immed = (GET_OP (insn, IMMX) ^ 0x8) - 0x8;
2894 infprintf (is, "%d", immed);
2895 break;
2896
2897 case 'Y':
2898 /* Sign-extend the immediate. */
2899 immed = (GET_OP (insn, IMMY) ^ 0x100) - 0x100;
2900 if (immed >= -2 && immed <= 1)
2901 immed ^= 0x100;
2902 immed = immed << 2;
2903 infprintf (is, "%d", immed);
2904 break;
2905
2906 default:
2907 /* xgettext:c-format */
2908 infprintf (is,
2909 _("# internal disassembler error, "
2910 "unrecognized modifier (m%c)"),
2911 *s);
2912 abort ();
2913 }
2914 break;
2915
2916 default:
2917 /* xgettext:c-format */
2918 infprintf (is,
2919 _("# internal disassembler error, "
2920 "unrecognized modifier (%c)"),
2921 *s);
2922 abort ();
2923 }
2924 }
2925
2926 /* Figure out instruction type and branch delay information. */
2927 if ((op->pinfo
2928 & (INSN_UNCOND_BRANCH_DELAY | INSN_COND_BRANCH_DELAY)) != 0)
2929 info->branch_delay_insns = 1;
2930 if (((op->pinfo & INSN_UNCOND_BRANCH_DELAY)
2931 | (op->pinfo2 & INSN2_UNCOND_BRANCH)) != 0)
2932 {
2933 if ((op->pinfo & (INSN_WRITE_GPR_31 | INSN_WRITE_GPR_T)) != 0)
2934 info->insn_type = dis_jsr;
2935 else
2936 info->insn_type = dis_branch;
2937 }
2938 else if (((op->pinfo & INSN_COND_BRANCH_DELAY)
2939 | (op->pinfo2 & INSN2_COND_BRANCH)) != 0)
2940 {
2941 if ((op->pinfo & INSN_WRITE_GPR_31) != 0)
2942 info->insn_type = dis_condjsr;
2943 else
2944 info->insn_type = dis_condbranch;
2945 }
2946 else if ((op->pinfo
2947 & (INSN_STORE_MEMORY | INSN_LOAD_MEMORY_DELAY)) != 0)
2948 info->insn_type = dis_dref;
2949
2950 return length;
2951 }
2952 }
2953 #undef GET_OP
2954
2955 infprintf (is, "0x%x", insn);
2956 info->insn_type = dis_noninsn;
2957
2958 return length;
2959 }
2960
2961 /* Return 1 if a symbol associated with the location being disassembled
2962 indicates a compressed (MIPS16 or microMIPS) mode. We iterate over
2963 all the symbols at the address being considered assuming if at least
2964 one of them indicates code compression, then such code has been
2965 genuinely produced here (other symbols could have been derived from
2966 function symbols defined elsewhere or could define data). Otherwise,
2967 return 0. */
2968
2969 static bfd_boolean
2970 is_compressed_mode_p (struct disassemble_info *info)
2971 {
2972 elf_symbol_type *symbol;
2973 int pos;
2974 int i;
2975
2976 for (i = 0; i < info->num_symbols; i++)
2977 {
2978 pos = info->symtab_pos + i;
2979
2980 if (bfd_asymbol_flavour (info->symtab[pos]) != bfd_target_elf_flavour)
2981 continue;
2982
2983 symbol = (elf_symbol_type *) info->symtab[pos];
2984 if ((!micromips_ase
2985 && ELF_ST_IS_MIPS16 (symbol->internal_elf_sym.st_other))
2986 || (micromips_ase
2987 && ELF_ST_IS_MICROMIPS (symbol->internal_elf_sym.st_other)))
2988 return 1;
2989 }
2990
2991 return 0;
2992 }
2993
2994 /* In an environment where we do not know the symbol type of the
2995 instruction we are forced to assume that the low order bit of the
2996 instructions' address may mark it as a mips16 instruction. If we
2997 are single stepping, or the pc is within the disassembled function,
2998 this works. Otherwise, we need a clue. Sometimes. */
2999
3000 static int
3001 _print_insn_mips (bfd_vma memaddr,
3002 struct disassemble_info *info,
3003 enum bfd_endian endianness)
3004 {
3005 int (*print_insn_compr) (bfd_vma, struct disassemble_info *);
3006 bfd_byte buffer[INSNLEN];
3007 int status;
3008
3009 set_default_mips_dis_options (info);
3010 parse_mips_dis_options (info->disassembler_options);
3011
3012 if (info->mach == bfd_mach_mips16)
3013 return print_insn_mips16 (memaddr, info);
3014 if (info->mach == bfd_mach_mips_micromips)
3015 return print_insn_micromips (memaddr, info);
3016
3017 print_insn_compr = !micromips_ase ? print_insn_mips16 : print_insn_micromips;
3018
3019 #if 1
3020 /* FIXME: If odd address, this is CLEARLY a compressed instruction. */
3021 /* Only a few tools will work this way. */
3022 if (memaddr & 0x01)
3023 return print_insn_compr (memaddr, info);
3024 #endif
3025
3026 #if SYMTAB_AVAILABLE
3027 if (is_compressed_mode_p (info))
3028 return print_insn_compr (memaddr, info);
3029 #endif
3030
3031 status = (*info->read_memory_func) (memaddr, buffer, INSNLEN, info);
3032 if (status == 0)
3033 {
3034 unsigned long insn;
3035
3036 if (endianness == BFD_ENDIAN_BIG)
3037 insn = (unsigned long) bfd_getb32 (buffer);
3038 else
3039 insn = (unsigned long) bfd_getl32 (buffer);
3040
3041 return print_insn_mips (memaddr, insn, info);
3042 }
3043 else
3044 {
3045 (*info->memory_error_func) (status, memaddr, info);
3046 return -1;
3047 }
3048 }
3049
3050 int
3051 print_insn_big_mips (bfd_vma memaddr, struct disassemble_info *info)
3052 {
3053 return _print_insn_mips (memaddr, info, BFD_ENDIAN_BIG);
3054 }
3055
3056 int
3057 print_insn_little_mips (bfd_vma memaddr, struct disassemble_info *info)
3058 {
3059 return _print_insn_mips (memaddr, info, BFD_ENDIAN_LITTLE);
3060 }
3061 \f
3062 void
3063 print_mips_disassembler_options (FILE *stream)
3064 {
3065 unsigned int i;
3066
3067 fprintf (stream, _("\n\
3068 The following MIPS specific disassembler options are supported for use\n\
3069 with the -M switch (multiple options should be separated by commas):\n"));
3070
3071 fprintf (stream, _("\n\
3072 gpr-names=ABI Print GPR names according to specified ABI.\n\
3073 Default: based on binary being disassembled.\n"));
3074
3075 fprintf (stream, _("\n\
3076 fpr-names=ABI Print FPR names according to specified ABI.\n\
3077 Default: numeric.\n"));
3078
3079 fprintf (stream, _("\n\
3080 cp0-names=ARCH Print CP0 register names according to\n\
3081 specified architecture.\n\
3082 Default: based on binary being disassembled.\n"));
3083
3084 fprintf (stream, _("\n\
3085 hwr-names=ARCH Print HWR names according to specified \n\
3086 architecture.\n\
3087 Default: based on binary being disassembled.\n"));
3088
3089 fprintf (stream, _("\n\
3090 reg-names=ABI Print GPR and FPR names according to\n\
3091 specified ABI.\n"));
3092
3093 fprintf (stream, _("\n\
3094 reg-names=ARCH Print CP0 register and HWR names according to\n\
3095 specified architecture.\n"));
3096
3097 fprintf (stream, _("\n\
3098 For the options above, the following values are supported for \"ABI\":\n\
3099 "));
3100 for (i = 0; i < ARRAY_SIZE (mips_abi_choices); i++)
3101 fprintf (stream, " %s", mips_abi_choices[i].name);
3102 fprintf (stream, _("\n"));
3103
3104 fprintf (stream, _("\n\
3105 For the options above, The following values are supported for \"ARCH\":\n\
3106 "));
3107 for (i = 0; i < ARRAY_SIZE (mips_arch_choices); i++)
3108 if (*mips_arch_choices[i].name != '\0')
3109 fprintf (stream, " %s", mips_arch_choices[i].name);
3110 fprintf (stream, _("\n"));
3111
3112 fprintf (stream, _("\n"));
3113 }
GDB Binutils - Deliverables
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