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Add ATTRIBUTE_UNUSED to info in compute_bucket_count.
[binutils.git] / opcodes / mips-dis.c
blobc0cfed671ed8422d48dbfe0ae0c1e02d2f25a8e7
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
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 #define mips16_reg_names(rn) mips_gpr_names[mips16_to_32_reg_map[rn]]
61
62
63 static const char * const mips_gpr_names_numeric[32] =
64 {
65 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
66 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
67 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
68 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
69 };
70
71 static const char * const mips_gpr_names_oldabi[32] =
72 {
73 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
74 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
75 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
76 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
77 };
78
79 static const char * const mips_gpr_names_newabi[32] =
80 {
81 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
82 "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3",
83 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
84 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
85 };
86
87 static const char * const mips_fpr_names_numeric[32] =
88 {
89 "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7",
90 "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15",
91 "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23",
92 "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31"
93 };
94
95 static const char * const mips_fpr_names_32[32] =
96 {
97 "fv0", "fv0f", "fv1", "fv1f", "ft0", "ft0f", "ft1", "ft1f",
98 "ft2", "ft2f", "ft3", "ft3f", "fa0", "fa0f", "fa1", "fa1f",
99 "ft4", "ft4f", "ft5", "ft5f", "fs0", "fs0f", "fs1", "fs1f",
100 "fs2", "fs2f", "fs3", "fs3f", "fs4", "fs4f", "fs5", "fs5f"
101 };
102
103 static const char * const mips_fpr_names_n32[32] =
104 {
105 "fv0", "ft14", "fv1", "ft15", "ft0", "ft1", "ft2", "ft3",
106 "ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3",
107 "fa4", "fa5", "fa6", "fa7", "fs0", "ft8", "fs1", "ft9",
108 "fs2", "ft10", "fs3", "ft11", "fs4", "ft12", "fs5", "ft13"
109 };
110
111 static const char * const mips_fpr_names_64[32] =
112 {
113 "fv0", "ft12", "fv1", "ft13", "ft0", "ft1", "ft2", "ft3",
114 "ft4", "ft5", "ft6", "ft7", "fa0", "fa1", "fa2", "fa3",
115 "fa4", "fa5", "fa6", "fa7", "ft8", "ft9", "ft10", "ft11",
116 "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7"
117 };
118
119 static const char * const mips_cp0_names_numeric[32] =
120 {
121 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
122 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
123 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
124 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
125 };
126
127 static const char * const mips_cp0_names_r3000[32] =
128 {
129 "c0_index", "c0_random", "c0_entrylo", "$3",
130 "c0_context", "$5", "$6", "$7",
131 "c0_badvaddr", "$9", "c0_entryhi", "$11",
132 "c0_sr", "c0_cause", "c0_epc", "c0_prid",
133 "$16", "$17", "$18", "$19",
134 "$20", "$21", "$22", "$23",
135 "$24", "$25", "$26", "$27",
136 "$28", "$29", "$30", "$31",
137 };
138
139 static const char * const mips_cp0_names_r4000[32] =
140 {
141 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
142 "c0_context", "c0_pagemask", "c0_wired", "$7",
143 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
144 "c0_sr", "c0_cause", "c0_epc", "c0_prid",
145 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
146 "c0_xcontext", "$21", "$22", "$23",
147 "$24", "$25", "c0_ecc", "c0_cacheerr",
148 "c0_taglo", "c0_taghi", "c0_errorepc", "$31",
149 };
150
151 static const char * const mips_cp0_names_mips3264[32] =
152 {
153 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
154 "c0_context", "c0_pagemask", "c0_wired", "$7",
155 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
156 "c0_status", "c0_cause", "c0_epc", "c0_prid",
157 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
158 "c0_xcontext", "$21", "$22", "c0_debug",
159 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
160 "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
161 };
162
163 static const struct mips_cp0sel_name mips_cp0sel_names_mips3264[] =
164 {
165 { 16, 1, "c0_config1" },
166 { 16, 2, "c0_config2" },
167 { 16, 3, "c0_config3" },
168 { 18, 1, "c0_watchlo,1" },
169 { 18, 2, "c0_watchlo,2" },
170 { 18, 3, "c0_watchlo,3" },
171 { 18, 4, "c0_watchlo,4" },
172 { 18, 5, "c0_watchlo,5" },
173 { 18, 6, "c0_watchlo,6" },
174 { 18, 7, "c0_watchlo,7" },
175 { 19, 1, "c0_watchhi,1" },
176 { 19, 2, "c0_watchhi,2" },
177 { 19, 3, "c0_watchhi,3" },
178 { 19, 4, "c0_watchhi,4" },
179 { 19, 5, "c0_watchhi,5" },
180 { 19, 6, "c0_watchhi,6" },
181 { 19, 7, "c0_watchhi,7" },
182 { 25, 1, "c0_perfcnt,1" },
183 { 25, 2, "c0_perfcnt,2" },
184 { 25, 3, "c0_perfcnt,3" },
185 { 25, 4, "c0_perfcnt,4" },
186 { 25, 5, "c0_perfcnt,5" },
187 { 25, 6, "c0_perfcnt,6" },
188 { 25, 7, "c0_perfcnt,7" },
189 { 27, 1, "c0_cacheerr,1" },
190 { 27, 2, "c0_cacheerr,2" },
191 { 27, 3, "c0_cacheerr,3" },
192 { 28, 1, "c0_datalo" },
193 { 29, 1, "c0_datahi" }
194 };
195
196 static const char * const mips_cp0_names_mips3264r2[32] =
197 {
198 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
199 "c0_context", "c0_pagemask", "c0_wired", "c0_hwrena",
200 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
201 "c0_status", "c0_cause", "c0_epc", "c0_prid",
202 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
203 "c0_xcontext", "$21", "$22", "c0_debug",
204 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
205 "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
206 };
207
208 static const struct mips_cp0sel_name mips_cp0sel_names_mips3264r2[] =
209 {
210 { 4, 1, "c0_contextconfig" },
211 { 0, 1, "c0_mvpcontrol" },
212 { 0, 2, "c0_mvpconf0" },
213 { 0, 3, "c0_mvpconf1" },
214 { 1, 1, "c0_vpecontrol" },
215 { 1, 2, "c0_vpeconf0" },
216 { 1, 3, "c0_vpeconf1" },
217 { 1, 4, "c0_yqmask" },
218 { 1, 5, "c0_vpeschedule" },
219 { 1, 6, "c0_vpeschefback" },
220 { 2, 1, "c0_tcstatus" },
221 { 2, 2, "c0_tcbind" },
222 { 2, 3, "c0_tcrestart" },
223 { 2, 4, "c0_tchalt" },
224 { 2, 5, "c0_tccontext" },
225 { 2, 6, "c0_tcschedule" },
226 { 2, 7, "c0_tcschefback" },
227 { 5, 1, "c0_pagegrain" },
228 { 6, 1, "c0_srsconf0" },
229 { 6, 2, "c0_srsconf1" },
230 { 6, 3, "c0_srsconf2" },
231 { 6, 4, "c0_srsconf3" },
232 { 6, 5, "c0_srsconf4" },
233 { 12, 1, "c0_intctl" },
234 { 12, 2, "c0_srsctl" },
235 { 12, 3, "c0_srsmap" },
236 { 15, 1, "c0_ebase" },
237 { 16, 1, "c0_config1" },
238 { 16, 2, "c0_config2" },
239 { 16, 3, "c0_config3" },
240 { 18, 1, "c0_watchlo,1" },
241 { 18, 2, "c0_watchlo,2" },
242 { 18, 3, "c0_watchlo,3" },
243 { 18, 4, "c0_watchlo,4" },
244 { 18, 5, "c0_watchlo,5" },
245 { 18, 6, "c0_watchlo,6" },
246 { 18, 7, "c0_watchlo,7" },
247 { 19, 1, "c0_watchhi,1" },
248 { 19, 2, "c0_watchhi,2" },
249 { 19, 3, "c0_watchhi,3" },
250 { 19, 4, "c0_watchhi,4" },
251 { 19, 5, "c0_watchhi,5" },
252 { 19, 6, "c0_watchhi,6" },
253 { 19, 7, "c0_watchhi,7" },
254 { 23, 1, "c0_tracecontrol" },
255 { 23, 2, "c0_tracecontrol2" },
256 { 23, 3, "c0_usertracedata" },
257 { 23, 4, "c0_tracebpc" },
258 { 25, 1, "c0_perfcnt,1" },
259 { 25, 2, "c0_perfcnt,2" },
260 { 25, 3, "c0_perfcnt,3" },
261 { 25, 4, "c0_perfcnt,4" },
262 { 25, 5, "c0_perfcnt,5" },
263 { 25, 6, "c0_perfcnt,6" },
264 { 25, 7, "c0_perfcnt,7" },
265 { 27, 1, "c0_cacheerr,1" },
266 { 27, 2, "c0_cacheerr,2" },
267 { 27, 3, "c0_cacheerr,3" },
268 { 28, 1, "c0_datalo" },
269 { 28, 2, "c0_taglo1" },
270 { 28, 3, "c0_datalo1" },
271 { 28, 4, "c0_taglo2" },
272 { 28, 5, "c0_datalo2" },
273 { 28, 6, "c0_taglo3" },
274 { 28, 7, "c0_datalo3" },
275 { 29, 1, "c0_datahi" },
276 { 29, 2, "c0_taghi1" },
277 { 29, 3, "c0_datahi1" },
278 { 29, 4, "c0_taghi2" },
279 { 29, 5, "c0_datahi2" },
280 { 29, 6, "c0_taghi3" },
281 { 29, 7, "c0_datahi3" },
282 };
283
284 /* SB-1: MIPS64 (mips_cp0_names_mips3264) with minor mods. */
285 static const char * const mips_cp0_names_sb1[32] =
286 {
287 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
288 "c0_context", "c0_pagemask", "c0_wired", "$7",
289 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
290 "c0_status", "c0_cause", "c0_epc", "c0_prid",
291 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
292 "c0_xcontext", "$21", "$22", "c0_debug",
293 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr_i",
294 "c0_taglo_i", "c0_taghi_i", "c0_errorepc", "c0_desave",
295 };
296
297 static const struct mips_cp0sel_name mips_cp0sel_names_sb1[] =
298 {
299 { 16, 1, "c0_config1" },
300 { 18, 1, "c0_watchlo,1" },
301 { 19, 1, "c0_watchhi,1" },
302 { 22, 0, "c0_perftrace" },
303 { 23, 3, "c0_edebug" },
304 { 25, 1, "c0_perfcnt,1" },
305 { 25, 2, "c0_perfcnt,2" },
306 { 25, 3, "c0_perfcnt,3" },
307 { 25, 4, "c0_perfcnt,4" },
308 { 25, 5, "c0_perfcnt,5" },
309 { 25, 6, "c0_perfcnt,6" },
310 { 25, 7, "c0_perfcnt,7" },
311 { 26, 1, "c0_buserr_pa" },
312 { 27, 1, "c0_cacheerr_d" },
313 { 27, 3, "c0_cacheerr_d_pa" },
314 { 28, 1, "c0_datalo_i" },
315 { 28, 2, "c0_taglo_d" },
316 { 28, 3, "c0_datalo_d" },
317 { 29, 1, "c0_datahi_i" },
318 { 29, 2, "c0_taghi_d" },
319 { 29, 3, "c0_datahi_d" },
320 };
321
322 /* Xlr cop0 register names. */
323 static const char * const mips_cp0_names_xlr[32] = {
324 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
325 "c0_context", "c0_pagemask", "c0_wired", "$7",
326 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
327 "c0_status", "c0_cause", "c0_epc", "c0_prid",
328 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
329 "c0_xcontext", "$21", "$22", "c0_debug",
330 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr_i",
331 "c0_taglo_i", "c0_taghi_i", "c0_errorepc", "c0_desave",
332 };
333
334 /* XLR's CP0 Select Registers. */
335
336 static const struct mips_cp0sel_name mips_cp0sel_names_xlr[] = {
337 { 9, 6, "c0_extintreq" },
338 { 9, 7, "c0_extintmask" },
339 { 15, 1, "c0_ebase" },
340 { 16, 1, "c0_config1" },
341 { 16, 2, "c0_config2" },
342 { 16, 3, "c0_config3" },
343 { 16, 7, "c0_procid2" },
344 { 18, 1, "c0_watchlo,1" },
345 { 18, 2, "c0_watchlo,2" },
346 { 18, 3, "c0_watchlo,3" },
347 { 18, 4, "c0_watchlo,4" },
348 { 18, 5, "c0_watchlo,5" },
349 { 18, 6, "c0_watchlo,6" },
350 { 18, 7, "c0_watchlo,7" },
351 { 19, 1, "c0_watchhi,1" },
352 { 19, 2, "c0_watchhi,2" },
353 { 19, 3, "c0_watchhi,3" },
354 { 19, 4, "c0_watchhi,4" },
355 { 19, 5, "c0_watchhi,5" },
356 { 19, 6, "c0_watchhi,6" },
357 { 19, 7, "c0_watchhi,7" },
358 { 25, 1, "c0_perfcnt,1" },
359 { 25, 2, "c0_perfcnt,2" },
360 { 25, 3, "c0_perfcnt,3" },
361 { 25, 4, "c0_perfcnt,4" },
362 { 25, 5, "c0_perfcnt,5" },
363 { 25, 6, "c0_perfcnt,6" },
364 { 25, 7, "c0_perfcnt,7" },
365 { 27, 1, "c0_cacheerr,1" },
366 { 27, 2, "c0_cacheerr,2" },
367 { 27, 3, "c0_cacheerr,3" },
368 { 28, 1, "c0_datalo" },
369 { 29, 1, "c0_datahi" }
370 };
371
372 static const char * const mips_hwr_names_numeric[32] =
373 {
374 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
375 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
376 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
377 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
378 };
379
380 static const char * const mips_hwr_names_mips3264r2[32] =
381 {
382 "hwr_cpunum", "hwr_synci_step", "hwr_cc", "hwr_ccres",
383 "$4", "$5", "$6", "$7",
384 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
385 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
386 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
387 };
388
389 struct mips_abi_choice
390 {
391 const char * name;
392 const char * const *gpr_names;
393 const char * const *fpr_names;
394 };
395
396 struct mips_abi_choice mips_abi_choices[] =
397 {
398 { "numeric", mips_gpr_names_numeric, mips_fpr_names_numeric },
399 { "32", mips_gpr_names_oldabi, mips_fpr_names_32 },
400 { "n32", mips_gpr_names_newabi, mips_fpr_names_n32 },
401 { "64", mips_gpr_names_newabi, mips_fpr_names_64 },
402 };
403
404 struct mips_arch_choice
405 {
406 const char *name;
407 int bfd_mach_valid;
408 unsigned long bfd_mach;
409 int processor;
410 int isa;
411 const char * const *cp0_names;
412 const struct mips_cp0sel_name *cp0sel_names;
413 unsigned int cp0sel_names_len;
414 const char * const *hwr_names;
415 };
416
417 const struct mips_arch_choice mips_arch_choices[] =
418 {
419 { "numeric", 0, 0, 0, 0,
420 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
421
422 { "r3000", 1, bfd_mach_mips3000, CPU_R3000, ISA_MIPS1,
423 mips_cp0_names_r3000, NULL, 0, mips_hwr_names_numeric },
424 { "r3900", 1, bfd_mach_mips3900, CPU_R3900, ISA_MIPS1,
425 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
426 { "r4000", 1, bfd_mach_mips4000, CPU_R4000, ISA_MIPS3,
427 mips_cp0_names_r4000, NULL, 0, mips_hwr_names_numeric },
428 { "r4010", 1, bfd_mach_mips4010, CPU_R4010, ISA_MIPS2,
429 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
430 { "vr4100", 1, bfd_mach_mips4100, CPU_VR4100, ISA_MIPS3,
431 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
432 { "vr4111", 1, bfd_mach_mips4111, CPU_R4111, ISA_MIPS3,
433 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
434 { "vr4120", 1, bfd_mach_mips4120, CPU_VR4120, ISA_MIPS3,
435 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
436 { "r4300", 1, bfd_mach_mips4300, CPU_R4300, ISA_MIPS3,
437 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
438 { "r4400", 1, bfd_mach_mips4400, CPU_R4400, ISA_MIPS3,
439 mips_cp0_names_r4000, NULL, 0, mips_hwr_names_numeric },
440 { "r4600", 1, bfd_mach_mips4600, CPU_R4600, ISA_MIPS3,
441 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
442 { "r4650", 1, bfd_mach_mips4650, CPU_R4650, ISA_MIPS3,
443 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
444 { "r5000", 1, bfd_mach_mips5000, CPU_R5000, ISA_MIPS4,
445 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
446 { "vr5400", 1, bfd_mach_mips5400, CPU_VR5400, ISA_MIPS4,
447 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
448 { "vr5500", 1, bfd_mach_mips5500, CPU_VR5500, ISA_MIPS4,
449 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
450 { "r6000", 1, bfd_mach_mips6000, CPU_R6000, ISA_MIPS2,
451 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
452 { "rm7000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
453 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
454 { "rm9000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
455 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
456 { "r8000", 1, bfd_mach_mips8000, CPU_R8000, ISA_MIPS4,
457 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
458 { "r10000", 1, bfd_mach_mips10000, CPU_R10000, ISA_MIPS4,
459 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
460 { "r12000", 1, bfd_mach_mips12000, CPU_R12000, ISA_MIPS4,
461 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
462 { "r14000", 1, bfd_mach_mips14000, CPU_R14000, ISA_MIPS4,
463 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
464 { "r16000", 1, bfd_mach_mips16000, CPU_R16000, ISA_MIPS4,
465 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
466 { "mips5", 1, bfd_mach_mips5, CPU_MIPS5, ISA_MIPS5,
467 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
468
469 /* For stock MIPS32, disassemble all applicable MIPS-specified ASEs.
470 Note that MIPS-3D and MDMX are not applicable to MIPS32. (See
471 _MIPS32 Architecture For Programmers Volume I: Introduction to the
472 MIPS32 Architecture_ (MIPS Document Number MD00082, Revision 0.95),
473 page 1. */
474 { "mips32", 1, bfd_mach_mipsisa32, CPU_MIPS32,
475 ISA_MIPS32 | INSN_SMARTMIPS,
476 mips_cp0_names_mips3264,
477 mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
478 mips_hwr_names_numeric },
479
480 { "mips32r2", 1, bfd_mach_mipsisa32r2, CPU_MIPS32R2,
481 (ISA_MIPS32R2 | INSN_SMARTMIPS | INSN_DSP | INSN_DSPR2
482 | INSN_MIPS3D | INSN_MT),
483 mips_cp0_names_mips3264r2,
484 mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
485 mips_hwr_names_mips3264r2 },
486
487 /* For stock MIPS64, disassemble all applicable MIPS-specified ASEs. */
488 { "mips64", 1, bfd_mach_mipsisa64, CPU_MIPS64,
489 ISA_MIPS64 | INSN_MIPS3D | INSN_MDMX,
490 mips_cp0_names_mips3264,
491 mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
492 mips_hwr_names_numeric },
493
494 { "mips64r2", 1, bfd_mach_mipsisa64r2, CPU_MIPS64R2,
495 (ISA_MIPS64R2 | INSN_MIPS3D | INSN_DSP | INSN_DSPR2
496 | INSN_DSP64 | INSN_MT | INSN_MDMX),
497 mips_cp0_names_mips3264r2,
498 mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
499 mips_hwr_names_mips3264r2 },
500
501 { "sb1", 1, bfd_mach_mips_sb1, CPU_SB1,
502 ISA_MIPS64 | INSN_MIPS3D | INSN_SB1,
503 mips_cp0_names_sb1,
504 mips_cp0sel_names_sb1, ARRAY_SIZE (mips_cp0sel_names_sb1),
505 mips_hwr_names_numeric },
506
507 { "loongson2e", 1, bfd_mach_mips_loongson_2e, CPU_LOONGSON_2E,
508 ISA_MIPS3 | INSN_LOONGSON_2E, mips_cp0_names_numeric,
509 NULL, 0, mips_hwr_names_numeric },
510
511 { "loongson2f", 1, bfd_mach_mips_loongson_2f, CPU_LOONGSON_2F,
512 ISA_MIPS3 | INSN_LOONGSON_2F, mips_cp0_names_numeric,
513 NULL, 0, mips_hwr_names_numeric },
514
515 { "octeon", 1, bfd_mach_mips_octeon, CPU_OCTEON,
516 ISA_MIPS64R2 | INSN_OCTEON, mips_cp0_names_numeric, NULL, 0,
517 mips_hwr_names_numeric },
518
519 { "xlr", 1, bfd_mach_mips_xlr, CPU_XLR,
520 ISA_MIPS64 | INSN_XLR,
521 mips_cp0_names_xlr,
522 mips_cp0sel_names_xlr, ARRAY_SIZE (mips_cp0sel_names_xlr),
523 mips_hwr_names_numeric },
524
525 /* This entry, mips16, is here only for ISA/processor selection; do
526 not print its name. */
527 { "", 1, bfd_mach_mips16, CPU_MIPS16, ISA_MIPS3,
528 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
529 };
530
531 /* ISA and processor type to disassemble for, and register names to use.
532 set_default_mips_dis_options and parse_mips_dis_options fill in these
533 values. */
534 static int mips_processor;
535 static int mips_isa;
536 static const char * const *mips_gpr_names;
537 static const char * const *mips_fpr_names;
538 static const char * const *mips_cp0_names;
539 static const struct mips_cp0sel_name *mips_cp0sel_names;
540 static int mips_cp0sel_names_len;
541 static const char * const *mips_hwr_names;
542
543 /* Other options */
544 static int no_aliases; /* If set disassemble as most general inst. */
545 \f
546 static const struct mips_abi_choice *
547 choose_abi_by_name (const char *name, unsigned int namelen)
548 {
549 const struct mips_abi_choice *c;
550 unsigned int i;
551
552 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_abi_choices) && c == NULL; i++)
553 if (strncmp (mips_abi_choices[i].name, name, namelen) == 0
554 && strlen (mips_abi_choices[i].name) == namelen)
555 c = &mips_abi_choices[i];
556
557 return c;
558 }
559
560 static const struct mips_arch_choice *
561 choose_arch_by_name (const char *name, unsigned int namelen)
562 {
563 const struct mips_arch_choice *c = NULL;
564 unsigned int i;
565
566 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
567 if (strncmp (mips_arch_choices[i].name, name, namelen) == 0
568 && strlen (mips_arch_choices[i].name) == namelen)
569 c = &mips_arch_choices[i];
570
571 return c;
572 }
573
574 static const struct mips_arch_choice *
575 choose_arch_by_number (unsigned long mach)
576 {
577 static unsigned long hint_bfd_mach;
578 static const struct mips_arch_choice *hint_arch_choice;
579 const struct mips_arch_choice *c;
580 unsigned int i;
581
582 /* We optimize this because even if the user specifies no
583 flags, this will be done for every instruction! */
584 if (hint_bfd_mach == mach
585 && hint_arch_choice != NULL
586 && hint_arch_choice->bfd_mach == hint_bfd_mach)
587 return hint_arch_choice;
588
589 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
590 {
591 if (mips_arch_choices[i].bfd_mach_valid
592 && mips_arch_choices[i].bfd_mach == mach)
593 {
594 c = &mips_arch_choices[i];
595 hint_bfd_mach = mach;
596 hint_arch_choice = c;
597 }
598 }
599 return c;
600 }
601
602 /* Check if the object uses NewABI conventions. */
603
604 static int
605 is_newabi (Elf_Internal_Ehdr *header)
606 {
607 /* There are no old-style ABIs which use 64-bit ELF. */
608 if (header->e_ident[EI_CLASS] == ELFCLASS64)
609 return 1;
610
611 /* If a 32-bit ELF file, n32 is a new-style ABI. */
612 if ((header->e_flags & EF_MIPS_ABI2) != 0)
613 return 1;
614
615 return 0;
616 }
617
618 static void
619 set_default_mips_dis_options (struct disassemble_info *info)
620 {
621 const struct mips_arch_choice *chosen_arch;
622
623 /* Defaults: mipsIII/r3000 (?!), (o)32-style ("oldabi") GPR names,
624 and numeric FPR, CP0 register, and HWR names. */
625 mips_isa = ISA_MIPS3;
626 mips_processor = CPU_R3000;
627 mips_gpr_names = mips_gpr_names_oldabi;
628 mips_fpr_names = mips_fpr_names_numeric;
629 mips_cp0_names = mips_cp0_names_numeric;
630 mips_cp0sel_names = NULL;
631 mips_cp0sel_names_len = 0;
632 mips_hwr_names = mips_hwr_names_numeric;
633 no_aliases = 0;
634
635 /* If an ELF "newabi" binary, use the n32/(n)64 GPR names. */
636 if (info->flavour == bfd_target_elf_flavour && info->section != NULL)
637 {
638 Elf_Internal_Ehdr *header;
639
640 header = elf_elfheader (info->section->owner);
641 if (is_newabi (header))
642 mips_gpr_names = mips_gpr_names_newabi;
643 }
644
645 /* Set ISA, architecture, and cp0 register names as best we can. */
646 #if ! SYMTAB_AVAILABLE
647 /* This is running out on a target machine, not in a host tool.
648 FIXME: Where does mips_target_info come from? */
649 target_processor = mips_target_info.processor;
650 mips_isa = mips_target_info.isa;
651 #else
652 chosen_arch = choose_arch_by_number (info->mach);
653 if (chosen_arch != NULL)
654 {
655 mips_processor = chosen_arch->processor;
656 mips_isa = chosen_arch->isa;
657 mips_cp0_names = chosen_arch->cp0_names;
658 mips_cp0sel_names = chosen_arch->cp0sel_names;
659 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
660 mips_hwr_names = chosen_arch->hwr_names;
661 }
662 #endif
663 }
664
665 static void
666 parse_mips_dis_option (const char *option, unsigned int len)
667 {
668 unsigned int i, optionlen, vallen;
669 const char *val;
670 const struct mips_abi_choice *chosen_abi;
671 const struct mips_arch_choice *chosen_arch;
672
673 /* Try to match options that are simple flags */
674 if (CONST_STRNEQ (option, "no-aliases"))
675 {
676 no_aliases = 1;
677 return;
678 }
679
680 /* Look for the = that delimits the end of the option name. */
681 for (i = 0; i < len; i++)
682 if (option[i] == '=')
683 break;
684
685 if (i == 0) /* Invalid option: no name before '='. */
686 return;
687 if (i == len) /* Invalid option: no '='. */
688 return;
689 if (i == (len - 1)) /* Invalid option: no value after '='. */
690 return;
691
692 optionlen = i;
693 val = option + (optionlen + 1);
694 vallen = len - (optionlen + 1);
695
696 if (strncmp ("gpr-names", option, optionlen) == 0
697 && strlen ("gpr-names") == optionlen)
698 {
699 chosen_abi = choose_abi_by_name (val, vallen);
700 if (chosen_abi != NULL)
701 mips_gpr_names = chosen_abi->gpr_names;
702 return;
703 }
704
705 if (strncmp ("fpr-names", option, optionlen) == 0
706 && strlen ("fpr-names") == optionlen)
707 {
708 chosen_abi = choose_abi_by_name (val, vallen);
709 if (chosen_abi != NULL)
710 mips_fpr_names = chosen_abi->fpr_names;
711 return;
712 }
713
714 if (strncmp ("cp0-names", option, optionlen) == 0
715 && strlen ("cp0-names") == optionlen)
716 {
717 chosen_arch = choose_arch_by_name (val, vallen);
718 if (chosen_arch != NULL)
719 {
720 mips_cp0_names = chosen_arch->cp0_names;
721 mips_cp0sel_names = chosen_arch->cp0sel_names;
722 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
723 }
724 return;
725 }
726
727 if (strncmp ("hwr-names", option, optionlen) == 0
728 && strlen ("hwr-names") == optionlen)
729 {
730 chosen_arch = choose_arch_by_name (val, vallen);
731 if (chosen_arch != NULL)
732 mips_hwr_names = chosen_arch->hwr_names;
733 return;
734 }
735
736 if (strncmp ("reg-names", option, optionlen) == 0
737 && strlen ("reg-names") == optionlen)
738 {
739 /* We check both ABI and ARCH here unconditionally, so
740 that "numeric" will do the desirable thing: select
741 numeric register names for all registers. Other than
742 that, a given name probably won't match both. */
743 chosen_abi = choose_abi_by_name (val, vallen);
744 if (chosen_abi != NULL)
745 {
746 mips_gpr_names = chosen_abi->gpr_names;
747 mips_fpr_names = chosen_abi->fpr_names;
748 }
749 chosen_arch = choose_arch_by_name (val, vallen);
750 if (chosen_arch != NULL)
751 {
752 mips_cp0_names = chosen_arch->cp0_names;
753 mips_cp0sel_names = chosen_arch->cp0sel_names;
754 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
755 mips_hwr_names = chosen_arch->hwr_names;
756 }
757 return;
758 }
759
760 /* Invalid option. */
761 }
762
763 static void
764 parse_mips_dis_options (const char *options)
765 {
766 const char *option_end;
767
768 if (options == NULL)
769 return;
770
771 while (*options != '\0')
772 {
773 /* Skip empty options. */
774 if (*options == ',')
775 {
776 options++;
777 continue;
778 }
779
780 /* We know that *options is neither NUL or a comma. */
781 option_end = options + 1;
782 while (*option_end != ',' && *option_end != '\0')
783 option_end++;
784
785 parse_mips_dis_option (options, option_end - options);
786
787 /* Go on to the next one. If option_end points to a comma, it
788 will be skipped above. */
789 options = option_end;
790 }
791 }
792
793 static const struct mips_cp0sel_name *
794 lookup_mips_cp0sel_name (const struct mips_cp0sel_name *names,
795 unsigned int len,
796 unsigned int cp0reg,
797 unsigned int sel)
798 {
799 unsigned int i;
800
801 for (i = 0; i < len; i++)
802 if (names[i].cp0reg == cp0reg && names[i].sel == sel)
803 return &names[i];
804 return NULL;
805 }
806 \f
807 /* Print insn arguments for 32/64-bit code. */
808
809 static void
810 print_insn_args (const char *d,
811 register unsigned long int l,
812 bfd_vma pc,
813 struct disassemble_info *info,
814 const struct mips_opcode *opp)
815 {
816 int op, delta;
817 unsigned int lsb, msb, msbd;
818
819 lsb = 0;
820
821 for (; *d != '\0'; d++)
822 {
823 switch (*d)
824 {
825 case ',':
826 case '(':
827 case ')':
828 case '[':
829 case ']':
830 (*info->fprintf_func) (info->stream, "%c", *d);
831 break;
832
833 case '+':
834 /* Extension character; switch for second char. */
835 d++;
836 switch (*d)
837 {
838 case '\0':
839 /* xgettext:c-format */
840 (*info->fprintf_func) (info->stream,
841 _("# internal error, incomplete extension sequence (+)"));
842 return;
843
844 case 'A':
845 lsb = (l >> OP_SH_SHAMT) & OP_MASK_SHAMT;
846 (*info->fprintf_func) (info->stream, "0x%x", lsb);
847 break;
848
849 case 'B':
850 msb = (l >> OP_SH_INSMSB) & OP_MASK_INSMSB;
851 (*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
852 break;
853
854 case '1':
855 (*info->fprintf_func) (info->stream, "0x%lx",
856 (l >> OP_SH_UDI1) & OP_MASK_UDI1);
857 break;
858
859 case '2':
860 (*info->fprintf_func) (info->stream, "0x%lx",
861 (l >> OP_SH_UDI2) & OP_MASK_UDI2);
862 break;
863
864 case '3':
865 (*info->fprintf_func) (info->stream, "0x%lx",
866 (l >> OP_SH_UDI3) & OP_MASK_UDI3);
867 break;
868
869 case '4':
870 (*info->fprintf_func) (info->stream, "0x%lx",
871 (l >> OP_SH_UDI4) & OP_MASK_UDI4);
872 break;
873
874 case 'C':
875 case 'H':
876 msbd = (l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD;
877 (*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
878 break;
879
880 case 'D':
881 {
882 const struct mips_cp0sel_name *n;
883 unsigned int cp0reg, sel;
884
885 cp0reg = (l >> OP_SH_RD) & OP_MASK_RD;
886 sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
887
888 /* CP0 register including 'sel' code for mtcN (et al.), to be
889 printed textually if known. If not known, print both
890 CP0 register name and sel numerically since CP0 register
891 with sel 0 may have a name unrelated to register being
892 printed. */
893 n = lookup_mips_cp0sel_name(mips_cp0sel_names,
894 mips_cp0sel_names_len, cp0reg, sel);
895 if (n != NULL)
896 (*info->fprintf_func) (info->stream, "%s", n->name);
897 else
898 (*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
899 break;
900 }
901
902 case 'E':
903 lsb = ((l >> OP_SH_SHAMT) & OP_MASK_SHAMT) + 32;
904 (*info->fprintf_func) (info->stream, "0x%x", lsb);
905 break;
906
907 case 'F':
908 msb = ((l >> OP_SH_INSMSB) & OP_MASK_INSMSB) + 32;
909 (*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
910 break;
911
912 case 'G':
913 msbd = ((l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD) + 32;
914 (*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
915 break;
916
917 case 't': /* Coprocessor 0 reg name */
918 (*info->fprintf_func) (info->stream, "%s",
919 mips_cp0_names[(l >> OP_SH_RT) &
920 OP_MASK_RT]);
921 break;
922
923 case 'T': /* Coprocessor 0 reg name */
924 {
925 const struct mips_cp0sel_name *n;
926 unsigned int cp0reg, sel;
927
928 cp0reg = (l >> OP_SH_RT) & OP_MASK_RT;
929 sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
930
931 /* CP0 register including 'sel' code for mftc0, to be
932 printed textually if known. If not known, print both
933 CP0 register name and sel numerically since CP0 register
934 with sel 0 may have a name unrelated to register being
935 printed. */
936 n = lookup_mips_cp0sel_name(mips_cp0sel_names,
937 mips_cp0sel_names_len, cp0reg, sel);
938 if (n != NULL)
939 (*info->fprintf_func) (info->stream, "%s", n->name);
940 else
941 (*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
942 break;
943 }
944
945 case 'x': /* bbit bit index */
946 (*info->fprintf_func) (info->stream, "0x%lx",
947 (l >> OP_SH_BBITIND) & OP_MASK_BBITIND);
948 break;
949
950 case 'p': /* cins, cins32, exts and exts32 position */
951 (*info->fprintf_func) (info->stream, "0x%lx",
952 (l >> OP_SH_CINSPOS) & OP_MASK_CINSPOS);
953 break;
954
955 case 's': /* cins and exts length-minus-one */
956 (*info->fprintf_func) (info->stream, "0x%lx",
957 (l >> OP_SH_CINSLM1) & OP_MASK_CINSLM1);
958 break;
959
960 case 'S': /* cins32 and exts32 length-minus-one field */
961 (*info->fprintf_func) (info->stream, "0x%lx",
962 (l >> OP_SH_CINSLM1) & OP_MASK_CINSLM1);
963 break;
964
965 case 'Q': /* seqi/snei immediate field */
966 op = (l >> OP_SH_SEQI) & OP_MASK_SEQI;
967 /* Sign-extend it. */
968 op = (op ^ 512) - 512;
969 (*info->fprintf_func) (info->stream, "%d", op);
970 break;
971
972 default:
973 /* xgettext:c-format */
974 (*info->fprintf_func) (info->stream,
975 _("# internal error, undefined extension sequence (+%c)"),
976 *d);
977 return;
978 }
979 break;
980
981 case '2':
982 (*info->fprintf_func) (info->stream, "0x%lx",
983 (l >> OP_SH_BP) & OP_MASK_BP);
984 break;
985
986 case '3':
987 (*info->fprintf_func) (info->stream, "0x%lx",
988 (l >> OP_SH_SA3) & OP_MASK_SA3);
989 break;
990
991 case '4':
992 (*info->fprintf_func) (info->stream, "0x%lx",
993 (l >> OP_SH_SA4) & OP_MASK_SA4);
994 break;
995
996 case '5':
997 (*info->fprintf_func) (info->stream, "0x%lx",
998 (l >> OP_SH_IMM8) & OP_MASK_IMM8);
999 break;
1000
1001 case '6':
1002 (*info->fprintf_func) (info->stream, "0x%lx",
1003 (l >> OP_SH_RS) & OP_MASK_RS);
1004 break;
1005
1006 case '7':
1007 (*info->fprintf_func) (info->stream, "$ac%ld",
1008 (l >> OP_SH_DSPACC) & OP_MASK_DSPACC);
1009 break;
1010
1011 case '8':
1012 (*info->fprintf_func) (info->stream, "0x%lx",
1013 (l >> OP_SH_WRDSP) & OP_MASK_WRDSP);
1014 break;
1015
1016 case '9':
1017 (*info->fprintf_func) (info->stream, "$ac%ld",
1018 (l >> OP_SH_DSPACC_S) & OP_MASK_DSPACC_S);
1019 break;
1020
1021 case '0': /* dsp 6-bit signed immediate in bit 20 */
1022 delta = ((l >> OP_SH_DSPSFT) & OP_MASK_DSPSFT);
1023 if (delta & 0x20) /* test sign bit */
1024 delta |= ~OP_MASK_DSPSFT;
1025 (*info->fprintf_func) (info->stream, "%d", delta);
1026 break;
1027
1028 case ':': /* dsp 7-bit signed immediate in bit 19 */
1029 delta = ((l >> OP_SH_DSPSFT_7) & OP_MASK_DSPSFT_7);
1030 if (delta & 0x40) /* test sign bit */
1031 delta |= ~OP_MASK_DSPSFT_7;
1032 (*info->fprintf_func) (info->stream, "%d", delta);
1033 break;
1034
1035 case '\'':
1036 (*info->fprintf_func) (info->stream, "0x%lx",
1037 (l >> OP_SH_RDDSP) & OP_MASK_RDDSP);
1038 break;
1039
1040 case '@': /* dsp 10-bit signed immediate in bit 16 */
1041 delta = ((l >> OP_SH_IMM10) & OP_MASK_IMM10);
1042 if (delta & 0x200) /* test sign bit */
1043 delta |= ~OP_MASK_IMM10;
1044 (*info->fprintf_func) (info->stream, "%d", delta);
1045 break;
1046
1047 case '!':
1048 (*info->fprintf_func) (info->stream, "%ld",
1049 (l >> OP_SH_MT_U) & OP_MASK_MT_U);
1050 break;
1051
1052 case '$':
1053 (*info->fprintf_func) (info->stream, "%ld",
1054 (l >> OP_SH_MT_H) & OP_MASK_MT_H);
1055 break;
1056
1057 case '*':
1058 (*info->fprintf_func) (info->stream, "$ac%ld",
1059 (l >> OP_SH_MTACC_T) & OP_MASK_MTACC_T);
1060 break;
1061
1062 case '&':
1063 (*info->fprintf_func) (info->stream, "$ac%ld",
1064 (l >> OP_SH_MTACC_D) & OP_MASK_MTACC_D);
1065 break;
1066
1067 case 'g':
1068 /* Coprocessor register for CTTC1, MTTC2, MTHC2, CTTC2. */
1069 (*info->fprintf_func) (info->stream, "$%ld",
1070 (l >> OP_SH_RD) & OP_MASK_RD);
1071 break;
1072
1073 case 's':
1074 case 'b':
1075 case 'r':
1076 case 'v':
1077 (*info->fprintf_func) (info->stream, "%s",
1078 mips_gpr_names[(l >> OP_SH_RS) & OP_MASK_RS]);
1079 break;
1080
1081 case 't':
1082 case 'w':
1083 (*info->fprintf_func) (info->stream, "%s",
1084 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1085 break;
1086
1087 case 'i':
1088 case 'u':
1089 (*info->fprintf_func) (info->stream, "0x%lx",
1090 (l >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE);
1091 break;
1092
1093 case 'j': /* Same as i, but sign-extended. */
1094 case 'o':
1095 delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
1096 if (delta & 0x8000)
1097 delta |= ~0xffff;
1098 (*info->fprintf_func) (info->stream, "%d",
1099 delta);
1100 break;
1101
1102 case 'h':
1103 (*info->fprintf_func) (info->stream, "0x%x",
1104 (unsigned int) ((l >> OP_SH_PREFX)
1105 & OP_MASK_PREFX));
1106 break;
1107
1108 case 'k':
1109 (*info->fprintf_func) (info->stream, "0x%x",
1110 (unsigned int) ((l >> OP_SH_CACHE)
1111 & OP_MASK_CACHE));
1112 break;
1113
1114 case 'a':
1115 info->target = (((pc + 4) & ~(bfd_vma) 0x0fffffff)
1116 | (((l >> OP_SH_TARGET) & OP_MASK_TARGET) << 2));
1117 /* For gdb disassembler, force odd address on jalx. */
1118 if (info->flavour == bfd_target_unknown_flavour
1119 && strcmp (opp->name, "jalx") == 0)
1120 info->target |= 1;
1121 (*info->print_address_func) (info->target, info);
1122 break;
1123
1124 case 'p':
1125 /* Sign extend the displacement. */
1126 delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
1127 if (delta & 0x8000)
1128 delta |= ~0xffff;
1129 info->target = (delta << 2) + pc + INSNLEN;
1130 (*info->print_address_func) (info->target, info);
1131 break;
1132
1133 case 'd':
1134 (*info->fprintf_func) (info->stream, "%s",
1135 mips_gpr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1136 break;
1137
1138 case 'U':
1139 {
1140 /* First check for both rd and rt being equal. */
1141 unsigned int reg = (l >> OP_SH_RD) & OP_MASK_RD;
1142 if (reg == ((l >> OP_SH_RT) & OP_MASK_RT))
1143 (*info->fprintf_func) (info->stream, "%s",
1144 mips_gpr_names[reg]);
1145 else
1146 {
1147 /* If one is zero use the other. */
1148 if (reg == 0)
1149 (*info->fprintf_func) (info->stream, "%s",
1150 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1151 else if (((l >> OP_SH_RT) & OP_MASK_RT) == 0)
1152 (*info->fprintf_func) (info->stream, "%s",
1153 mips_gpr_names[reg]);
1154 else /* Bogus, result depends on processor. */
1155 (*info->fprintf_func) (info->stream, "%s or %s",
1156 mips_gpr_names[reg],
1157 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1158 }
1159 }
1160 break;
1161
1162 case 'z':
1163 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
1164 break;
1165
1166 case '<':
1167 case '1':
1168 (*info->fprintf_func) (info->stream, "0x%lx",
1169 (l >> OP_SH_SHAMT) & OP_MASK_SHAMT);
1170 break;
1171
1172 case 'c':
1173 (*info->fprintf_func) (info->stream, "0x%lx",
1174 (l >> OP_SH_CODE) & OP_MASK_CODE);
1175 break;
1176
1177 case 'q':
1178 (*info->fprintf_func) (info->stream, "0x%lx",
1179 (l >> OP_SH_CODE2) & OP_MASK_CODE2);
1180 break;
1181
1182 case 'C':
1183 (*info->fprintf_func) (info->stream, "0x%lx",
1184 (l >> OP_SH_COPZ) & OP_MASK_COPZ);
1185 break;
1186
1187 case 'B':
1188 (*info->fprintf_func) (info->stream, "0x%lx",
1189
1190 (l >> OP_SH_CODE20) & OP_MASK_CODE20);
1191 break;
1192
1193 case 'J':
1194 (*info->fprintf_func) (info->stream, "0x%lx",
1195 (l >> OP_SH_CODE19) & OP_MASK_CODE19);
1196 break;
1197
1198 case 'S':
1199 case 'V':
1200 (*info->fprintf_func) (info->stream, "%s",
1201 mips_fpr_names[(l >> OP_SH_FS) & OP_MASK_FS]);
1202 break;
1203
1204 case 'T':
1205 case 'W':
1206 (*info->fprintf_func) (info->stream, "%s",
1207 mips_fpr_names[(l >> OP_SH_FT) & OP_MASK_FT]);
1208 break;
1209
1210 case 'D':
1211 (*info->fprintf_func) (info->stream, "%s",
1212 mips_fpr_names[(l >> OP_SH_FD) & OP_MASK_FD]);
1213 break;
1214
1215 case 'R':
1216 (*info->fprintf_func) (info->stream, "%s",
1217 mips_fpr_names[(l >> OP_SH_FR) & OP_MASK_FR]);
1218 break;
1219
1220 case 'E':
1221 /* Coprocessor register for lwcN instructions, et al.
1222
1223 Note that there is no load/store cp0 instructions, and
1224 that FPU (cp1) instructions disassemble this field using
1225 'T' format. Therefore, until we gain understanding of
1226 cp2 register names, we can simply print the register
1227 numbers. */
1228 (*info->fprintf_func) (info->stream, "$%ld",
1229 (l >> OP_SH_RT) & OP_MASK_RT);
1230 break;
1231
1232 case 'G':
1233 /* Coprocessor register for mtcN instructions, et al. Note
1234 that FPU (cp1) instructions disassemble this field using
1235 'S' format. Therefore, we only need to worry about cp0,
1236 cp2, and cp3. */
1237 op = (l >> OP_SH_OP) & OP_MASK_OP;
1238 if (op == OP_OP_COP0)
1239 (*info->fprintf_func) (info->stream, "%s",
1240 mips_cp0_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1241 else
1242 (*info->fprintf_func) (info->stream, "$%ld",
1243 (l >> OP_SH_RD) & OP_MASK_RD);
1244 break;
1245
1246 case 'K':
1247 (*info->fprintf_func) (info->stream, "%s",
1248 mips_hwr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1249 break;
1250
1251 case 'N':
1252 (*info->fprintf_func) (info->stream,
1253 ((opp->pinfo & (FP_D | FP_S)) != 0
1254 ? "$fcc%ld" : "$cc%ld"),
1255 (l >> OP_SH_BCC) & OP_MASK_BCC);
1256 break;
1257
1258 case 'M':
1259 (*info->fprintf_func) (info->stream, "$fcc%ld",
1260 (l >> OP_SH_CCC) & OP_MASK_CCC);
1261 break;
1262
1263 case 'P':
1264 (*info->fprintf_func) (info->stream, "%ld",
1265 (l >> OP_SH_PERFREG) & OP_MASK_PERFREG);
1266 break;
1267
1268 case 'e':
1269 (*info->fprintf_func) (info->stream, "%ld",
1270 (l >> OP_SH_VECBYTE) & OP_MASK_VECBYTE);
1271 break;
1272
1273 case '%':
1274 (*info->fprintf_func) (info->stream, "%ld",
1275 (l >> OP_SH_VECALIGN) & OP_MASK_VECALIGN);
1276 break;
1277
1278 case 'H':
1279 (*info->fprintf_func) (info->stream, "%ld",
1280 (l >> OP_SH_SEL) & OP_MASK_SEL);
1281 break;
1282
1283 case 'O':
1284 (*info->fprintf_func) (info->stream, "%ld",
1285 (l >> OP_SH_ALN) & OP_MASK_ALN);
1286 break;
1287
1288 case 'Q':
1289 {
1290 unsigned int vsel = (l >> OP_SH_VSEL) & OP_MASK_VSEL;
1291
1292 if ((vsel & 0x10) == 0)
1293 {
1294 int fmt;
1295
1296 vsel &= 0x0f;
1297 for (fmt = 0; fmt < 3; fmt++, vsel >>= 1)
1298 if ((vsel & 1) == 0)
1299 break;
1300 (*info->fprintf_func) (info->stream, "$v%ld[%d]",
1301 (l >> OP_SH_FT) & OP_MASK_FT,
1302 vsel >> 1);
1303 }
1304 else if ((vsel & 0x08) == 0)
1305 {
1306 (*info->fprintf_func) (info->stream, "$v%ld",
1307 (l >> OP_SH_FT) & OP_MASK_FT);
1308 }
1309 else
1310 {
1311 (*info->fprintf_func) (info->stream, "0x%lx",
1312 (l >> OP_SH_FT) & OP_MASK_FT);
1313 }
1314 }
1315 break;
1316
1317 case 'X':
1318 (*info->fprintf_func) (info->stream, "$v%ld",
1319 (l >> OP_SH_FD) & OP_MASK_FD);
1320 break;
1321
1322 case 'Y':
1323 (*info->fprintf_func) (info->stream, "$v%ld",
1324 (l >> OP_SH_FS) & OP_MASK_FS);
1325 break;
1326
1327 case 'Z':
1328 (*info->fprintf_func) (info->stream, "$v%ld",
1329 (l >> OP_SH_FT) & OP_MASK_FT);
1330 break;
1331
1332 default:
1333 /* xgettext:c-format */
1334 (*info->fprintf_func) (info->stream,
1335 _("# internal error, undefined modifier (%c)"),
1336 *d);
1337 return;
1338 }
1339 }
1340 }
1341 \f
1342 /* Print the mips instruction at address MEMADDR in debugged memory,
1343 on using INFO. Returns length of the instruction, in bytes, which is
1344 always INSNLEN. BIGENDIAN must be 1 if this is big-endian code, 0 if
1345 this is little-endian code. */
1346
1347 static int
1348 print_insn_mips (bfd_vma memaddr,
1349 unsigned long int word,
1350 struct disassemble_info *info)
1351 {
1352 const struct mips_opcode *op;
1353 static bfd_boolean init = 0;
1354 static const struct mips_opcode *mips_hash[OP_MASK_OP + 1];
1355
1356 /* Build a hash table to shorten the search time. */
1357 if (! init)
1358 {
1359 unsigned int i;
1360
1361 for (i = 0; i <= OP_MASK_OP; i++)
1362 {
1363 for (op = mips_opcodes; op < &mips_opcodes[NUMOPCODES]; op++)
1364 {
1365 if (op->pinfo == INSN_MACRO
1366 || (no_aliases && (op->pinfo2 & INSN2_ALIAS)))
1367 continue;
1368 if (i == ((op->match >> OP_SH_OP) & OP_MASK_OP))
1369 {
1370 mips_hash[i] = op;
1371 break;
1372 }
1373 }
1374 }
1375
1376 init = 1;
1377 }
1378
1379 info->bytes_per_chunk = INSNLEN;
1380 info->display_endian = info->endian;
1381 info->insn_info_valid = 1;
1382 info->branch_delay_insns = 0;
1383 info->data_size = 0;
1384 info->insn_type = dis_nonbranch;
1385 info->target = 0;
1386 info->target2 = 0;
1387
1388 op = mips_hash[(word >> OP_SH_OP) & OP_MASK_OP];
1389 if (op != NULL)
1390 {
1391 for (; op < &mips_opcodes[NUMOPCODES]; op++)
1392 {
1393 if (op->pinfo != INSN_MACRO
1394 && !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
1395 && (word & op->mask) == op->match)
1396 {
1397 const char *d;
1398
1399 /* We always allow to disassemble the jalx instruction. */
1400 if (! OPCODE_IS_MEMBER (op, mips_isa, mips_processor)
1401 && strcmp (op->name, "jalx"))
1402 continue;
1403
1404 /* Figure out instruction type and branch delay information. */
1405 if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
1406 {
1407 if ((op->pinfo & (INSN_WRITE_GPR_31
1408 | INSN_WRITE_GPR_D)) != 0)
1409 info->insn_type = dis_jsr;
1410 else
1411 info->insn_type = dis_branch;
1412 info->branch_delay_insns = 1;
1413 }
1414 else if ((op->pinfo & (INSN_COND_BRANCH_DELAY
1415 | INSN_COND_BRANCH_LIKELY)) != 0)
1416 {
1417 if ((op->pinfo & INSN_WRITE_GPR_31) != 0)
1418 info->insn_type = dis_condjsr;
1419 else
1420 info->insn_type = dis_condbranch;
1421 info->branch_delay_insns = 1;
1422 }
1423 else if ((op->pinfo & (INSN_STORE_MEMORY
1424 | INSN_LOAD_MEMORY_DELAY)) != 0)
1425 info->insn_type = dis_dref;
1426
1427 (*info->fprintf_func) (info->stream, "%s", op->name);
1428
1429 d = op->args;
1430 if (d != NULL && *d != '\0')
1431 {
1432 (*info->fprintf_func) (info->stream, "\t");
1433 print_insn_args (d, word, memaddr, info, op);
1434 }
1435
1436 return INSNLEN;
1437 }
1438 }
1439 }
1440
1441 /* Handle undefined instructions. */
1442 info->insn_type = dis_noninsn;
1443 (*info->fprintf_func) (info->stream, "0x%lx", word);
1444 return INSNLEN;
1445 }
1446 \f
1447 /* Disassemble an operand for a mips16 instruction. */
1448
1449 static void
1450 print_mips16_insn_arg (char type,
1451 const struct mips_opcode *op,
1452 int l,
1453 bfd_boolean use_extend,
1454 int extend,
1455 bfd_vma memaddr,
1456 struct disassemble_info *info)
1457 {
1458 switch (type)
1459 {
1460 case ',':
1461 case '(':
1462 case ')':
1463 (*info->fprintf_func) (info->stream, "%c", type);
1464 break;
1465
1466 case 'y':
1467 case 'w':
1468 (*info->fprintf_func) (info->stream, "%s",
1469 mips16_reg_names(((l >> MIPS16OP_SH_RY)
1470 & MIPS16OP_MASK_RY)));
1471 break;
1472
1473 case 'x':
1474 case 'v':
1475 (*info->fprintf_func) (info->stream, "%s",
1476 mips16_reg_names(((l >> MIPS16OP_SH_RX)
1477 & MIPS16OP_MASK_RX)));
1478 break;
1479
1480 case 'z':
1481 (*info->fprintf_func) (info->stream, "%s",
1482 mips16_reg_names(((l >> MIPS16OP_SH_RZ)
1483 & MIPS16OP_MASK_RZ)));
1484 break;
1485
1486 case 'Z':
1487 (*info->fprintf_func) (info->stream, "%s",
1488 mips16_reg_names(((l >> MIPS16OP_SH_MOVE32Z)
1489 & MIPS16OP_MASK_MOVE32Z)));
1490 break;
1491
1492 case '0':
1493 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
1494 break;
1495
1496 case 'S':
1497 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[29]);
1498 break;
1499
1500 case 'P':
1501 (*info->fprintf_func) (info->stream, "$pc");
1502 break;
1503
1504 case 'R':
1505 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[31]);
1506 break;
1507
1508 case 'X':
1509 (*info->fprintf_func) (info->stream, "%s",
1510 mips_gpr_names[((l >> MIPS16OP_SH_REGR32)
1511 & MIPS16OP_MASK_REGR32)]);
1512 break;
1513
1514 case 'Y':
1515 (*info->fprintf_func) (info->stream, "%s",
1516 mips_gpr_names[MIPS16OP_EXTRACT_REG32R (l)]);
1517 break;
1518
1519 case '<':
1520 case '>':
1521 case '[':
1522 case ']':
1523 case '4':
1524 case '5':
1525 case 'H':
1526 case 'W':
1527 case 'D':
1528 case 'j':
1529 case '6':
1530 case '8':
1531 case 'V':
1532 case 'C':
1533 case 'U':
1534 case 'k':
1535 case 'K':
1536 case 'p':
1537 case 'q':
1538 case 'A':
1539 case 'B':
1540 case 'E':
1541 {
1542 int immed, nbits, shift, signedp, extbits, pcrel, extu, branch;
1543
1544 shift = 0;
1545 signedp = 0;
1546 extbits = 16;
1547 pcrel = 0;
1548 extu = 0;
1549 branch = 0;
1550 switch (type)
1551 {
1552 case '<':
1553 nbits = 3;
1554 immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
1555 extbits = 5;
1556 extu = 1;
1557 break;
1558 case '>':
1559 nbits = 3;
1560 immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
1561 extbits = 5;
1562 extu = 1;
1563 break;
1564 case '[':
1565 nbits = 3;
1566 immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
1567 extbits = 6;
1568 extu = 1;
1569 break;
1570 case ']':
1571 nbits = 3;
1572 immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
1573 extbits = 6;
1574 extu = 1;
1575 break;
1576 case '4':
1577 nbits = 4;
1578 immed = (l >> MIPS16OP_SH_IMM4) & MIPS16OP_MASK_IMM4;
1579 signedp = 1;
1580 extbits = 15;
1581 break;
1582 case '5':
1583 nbits = 5;
1584 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1585 info->insn_type = dis_dref;
1586 info->data_size = 1;
1587 break;
1588 case 'H':
1589 nbits = 5;
1590 shift = 1;
1591 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1592 info->insn_type = dis_dref;
1593 info->data_size = 2;
1594 break;
1595 case 'W':
1596 nbits = 5;
1597 shift = 2;
1598 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1599 if ((op->pinfo & MIPS16_INSN_READ_PC) == 0
1600 && (op->pinfo & MIPS16_INSN_READ_SP) == 0)
1601 {
1602 info->insn_type = dis_dref;
1603 info->data_size = 4;
1604 }
1605 break;
1606 case 'D':
1607 nbits = 5;
1608 shift = 3;
1609 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1610 info->insn_type = dis_dref;
1611 info->data_size = 8;
1612 break;
1613 case 'j':
1614 nbits = 5;
1615 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1616 signedp = 1;
1617 break;
1618 case '6':
1619 nbits = 6;
1620 immed = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
1621 break;
1622 case '8':
1623 nbits = 8;
1624 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1625 break;
1626 case 'V':
1627 nbits = 8;
1628 shift = 2;
1629 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1630 /* FIXME: This might be lw, or it might be addiu to $sp or
1631 $pc. We assume it's load. */
1632 info->insn_type = dis_dref;
1633 info->data_size = 4;
1634 break;
1635 case 'C':
1636 nbits = 8;
1637 shift = 3;
1638 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1639 info->insn_type = dis_dref;
1640 info->data_size = 8;
1641 break;
1642 case 'U':
1643 nbits = 8;
1644 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1645 extu = 1;
1646 break;
1647 case 'k':
1648 nbits = 8;
1649 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1650 signedp = 1;
1651 break;
1652 case 'K':
1653 nbits = 8;
1654 shift = 3;
1655 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1656 signedp = 1;
1657 break;
1658 case 'p':
1659 nbits = 8;
1660 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1661 signedp = 1;
1662 pcrel = 1;
1663 branch = 1;
1664 break;
1665 case 'q':
1666 nbits = 11;
1667 immed = (l >> MIPS16OP_SH_IMM11) & MIPS16OP_MASK_IMM11;
1668 signedp = 1;
1669 pcrel = 1;
1670 branch = 1;
1671 break;
1672 case 'A':
1673 nbits = 8;
1674 shift = 2;
1675 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1676 pcrel = 1;
1677 /* FIXME: This can be lw or la. We assume it is lw. */
1678 info->insn_type = dis_dref;
1679 info->data_size = 4;
1680 break;
1681 case 'B':
1682 nbits = 5;
1683 shift = 3;
1684 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1685 pcrel = 1;
1686 info->insn_type = dis_dref;
1687 info->data_size = 8;
1688 break;
1689 case 'E':
1690 nbits = 5;
1691 shift = 2;
1692 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1693 pcrel = 1;
1694 break;
1695 default:
1696 abort ();
1697 }
1698
1699 if (! use_extend)
1700 {
1701 if (signedp && immed >= (1 << (nbits - 1)))
1702 immed -= 1 << nbits;
1703 immed <<= shift;
1704 if ((type == '<' || type == '>' || type == '[' || type == ']')
1705 && immed == 0)
1706 immed = 8;
1707 }
1708 else
1709 {
1710 if (extbits == 16)
1711 immed |= ((extend & 0x1f) << 11) | (extend & 0x7e0);
1712 else if (extbits == 15)
1713 immed |= ((extend & 0xf) << 11) | (extend & 0x7f0);
1714 else
1715 immed = ((extend >> 6) & 0x1f) | (extend & 0x20);
1716 immed &= (1 << extbits) - 1;
1717 if (! extu && immed >= (1 << (extbits - 1)))
1718 immed -= 1 << extbits;
1719 }
1720
1721 if (! pcrel)
1722 (*info->fprintf_func) (info->stream, "%d", immed);
1723 else
1724 {
1725 bfd_vma baseaddr;
1726
1727 if (branch)
1728 {
1729 immed *= 2;
1730 baseaddr = memaddr + 2;
1731 }
1732 else if (use_extend)
1733 baseaddr = memaddr - 2;
1734 else
1735 {
1736 int status;
1737 bfd_byte buffer[2];
1738
1739 baseaddr = memaddr;
1740
1741 /* If this instruction is in the delay slot of a jr
1742 instruction, the base address is the address of the
1743 jr instruction. If it is in the delay slot of jalr
1744 instruction, the base address is the address of the
1745 jalr instruction. This test is unreliable: we have
1746 no way of knowing whether the previous word is
1747 instruction or data. */
1748 status = (*info->read_memory_func) (memaddr - 4, buffer, 2,
1749 info);
1750 if (status == 0
1751 && (((info->endian == BFD_ENDIAN_BIG
1752 ? bfd_getb16 (buffer)
1753 : bfd_getl16 (buffer))
1754 & 0xf800) == 0x1800))
1755 baseaddr = memaddr - 4;
1756 else
1757 {
1758 status = (*info->read_memory_func) (memaddr - 2, buffer,
1759 2, info);
1760 if (status == 0
1761 && (((info->endian == BFD_ENDIAN_BIG
1762 ? bfd_getb16 (buffer)
1763 : bfd_getl16 (buffer))
1764 & 0xf81f) == 0xe800))
1765 baseaddr = memaddr - 2;
1766 }
1767 }
1768 info->target = (baseaddr & ~((1 << shift) - 1)) + immed;
1769 if (pcrel && branch
1770 && info->flavour == bfd_target_unknown_flavour)
1771 /* For gdb disassembler, maintain odd address. */
1772 info->target |= 1;
1773 (*info->print_address_func) (info->target, info);
1774 }
1775 }
1776 break;
1777
1778 case 'a':
1779 {
1780 int jalx = l & 0x400;
1781
1782 if (! use_extend)
1783 extend = 0;
1784 l = ((l & 0x1f) << 23) | ((l & 0x3e0) << 13) | (extend << 2);
1785 if (!jalx && info->flavour == bfd_target_unknown_flavour)
1786 /* For gdb disassembler, maintain odd address. */
1787 l |= 1;
1788 }
1789 info->target = ((memaddr + 4) & ~(bfd_vma) 0x0fffffff) | l;
1790 (*info->print_address_func) (info->target, info);
1791 break;
1792
1793 case 'l':
1794 case 'L':
1795 {
1796 int need_comma, amask, smask;
1797
1798 need_comma = 0;
1799
1800 l = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
1801
1802 amask = (l >> 3) & 7;
1803
1804 if (amask > 0 && amask < 5)
1805 {
1806 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
1807 if (amask > 1)
1808 (*info->fprintf_func) (info->stream, "-%s",
1809 mips_gpr_names[amask + 3]);
1810 need_comma = 1;
1811 }
1812
1813 smask = (l >> 1) & 3;
1814 if (smask == 3)
1815 {
1816 (*info->fprintf_func) (info->stream, "%s??",
1817 need_comma ? "," : "");
1818 need_comma = 1;
1819 }
1820 else if (smask > 0)
1821 {
1822 (*info->fprintf_func) (info->stream, "%s%s",
1823 need_comma ? "," : "",
1824 mips_gpr_names[16]);
1825 if (smask > 1)
1826 (*info->fprintf_func) (info->stream, "-%s",
1827 mips_gpr_names[smask + 15]);
1828 need_comma = 1;
1829 }
1830
1831 if (l & 1)
1832 {
1833 (*info->fprintf_func) (info->stream, "%s%s",
1834 need_comma ? "," : "",
1835 mips_gpr_names[31]);
1836 need_comma = 1;
1837 }
1838
1839 if (amask == 5 || amask == 6)
1840 {
1841 (*info->fprintf_func) (info->stream, "%s$f0",
1842 need_comma ? "," : "");
1843 if (amask == 6)
1844 (*info->fprintf_func) (info->stream, "-$f1");
1845 }
1846 }
1847 break;
1848
1849 case 'm':
1850 case 'M':
1851 /* MIPS16e save/restore. */
1852 {
1853 int need_comma = 0;
1854 int amask, args, statics;
1855 int nsreg, smask;
1856 int framesz;
1857 int i, j;
1858
1859 l = l & 0x7f;
1860 if (use_extend)
1861 l |= extend << 16;
1862
1863 amask = (l >> 16) & 0xf;
1864 if (amask == MIPS16_ALL_ARGS)
1865 {
1866 args = 4;
1867 statics = 0;
1868 }
1869 else if (amask == MIPS16_ALL_STATICS)
1870 {
1871 args = 0;
1872 statics = 4;
1873 }
1874 else
1875 {
1876 args = amask >> 2;
1877 statics = amask & 3;
1878 }
1879
1880 if (args > 0) {
1881 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
1882 if (args > 1)
1883 (*info->fprintf_func) (info->stream, "-%s",
1884 mips_gpr_names[4 + args - 1]);
1885 need_comma = 1;
1886 }
1887
1888 framesz = (((l >> 16) & 0xf0) | (l & 0x0f)) * 8;
1889 if (framesz == 0 && !use_extend)
1890 framesz = 128;
1891
1892 (*info->fprintf_func) (info->stream, "%s%d",
1893 need_comma ? "," : "",
1894 framesz);
1895
1896 if (l & 0x40) /* $ra */
1897 (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[31]);
1898
1899 nsreg = (l >> 24) & 0x7;
1900 smask = 0;
1901 if (l & 0x20) /* $s0 */
1902 smask |= 1 << 0;
1903 if (l & 0x10) /* $s1 */
1904 smask |= 1 << 1;
1905 if (nsreg > 0) /* $s2-$s8 */
1906 smask |= ((1 << nsreg) - 1) << 2;
1907
1908 /* Find first set static reg bit. */
1909 for (i = 0; i < 9; i++)
1910 {
1911 if (smask & (1 << i))
1912 {
1913 (*info->fprintf_func) (info->stream, ",%s",
1914 mips_gpr_names[i == 8 ? 30 : (16 + i)]);
1915 /* Skip over string of set bits. */
1916 for (j = i; smask & (2 << j); j++)
1917 continue;
1918 if (j > i)
1919 (*info->fprintf_func) (info->stream, "-%s",
1920 mips_gpr_names[j == 8 ? 30 : (16 + j)]);
1921 i = j + 1;
1922 }
1923 }
1924
1925 /* Statics $ax - $a3. */
1926 if (statics == 1)
1927 (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[7]);
1928 else if (statics > 0)
1929 (*info->fprintf_func) (info->stream, ",%s-%s",
1930 mips_gpr_names[7 - statics + 1],
1931 mips_gpr_names[7]);
1932 }
1933 break;
1934
1935 default:
1936 /* xgettext:c-format */
1937 (*info->fprintf_func)
1938 (info->stream,
1939 _("# internal disassembler error, unrecognised modifier (%c)"),
1940 type);
1941 abort ();
1942 }
1943 }
1944
1945 /* Disassemble mips16 instructions. */
1946
1947 static int
1948 print_insn_mips16 (bfd_vma memaddr, struct disassemble_info *info)
1949 {
1950 int status;
1951 bfd_byte buffer[2];
1952 int length;
1953 int insn;
1954 bfd_boolean use_extend;
1955 int extend = 0;
1956 const struct mips_opcode *op, *opend;
1957
1958 info->bytes_per_chunk = 2;
1959 info->display_endian = info->endian;
1960 info->insn_info_valid = 1;
1961 info->branch_delay_insns = 0;
1962 info->data_size = 0;
1963 info->insn_type = dis_nonbranch;
1964 info->target = 0;
1965 info->target2 = 0;
1966
1967 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
1968 if (status != 0)
1969 {
1970 (*info->memory_error_func) (status, memaddr, info);
1971 return -1;
1972 }
1973
1974 length = 2;
1975
1976 if (info->endian == BFD_ENDIAN_BIG)
1977 insn = bfd_getb16 (buffer);
1978 else
1979 insn = bfd_getl16 (buffer);
1980
1981 /* Handle the extend opcode specially. */
1982 use_extend = FALSE;
1983 if ((insn & 0xf800) == 0xf000)
1984 {
1985 use_extend = TRUE;
1986 extend = insn & 0x7ff;
1987
1988 memaddr += 2;
1989
1990 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
1991 if (status != 0)
1992 {
1993 (*info->fprintf_func) (info->stream, "extend 0x%x",
1994 (unsigned int) extend);
1995 (*info->memory_error_func) (status, memaddr, info);
1996 return -1;
1997 }
1998
1999 if (info->endian == BFD_ENDIAN_BIG)
2000 insn = bfd_getb16 (buffer);
2001 else
2002 insn = bfd_getl16 (buffer);
2003
2004 /* Check for an extend opcode followed by an extend opcode. */
2005 if ((insn & 0xf800) == 0xf000)
2006 {
2007 (*info->fprintf_func) (info->stream, "extend 0x%x",
2008 (unsigned int) extend);
2009 info->insn_type = dis_noninsn;
2010 return length;
2011 }
2012
2013 length += 2;
2014 }
2015
2016 /* FIXME: Should probably use a hash table on the major opcode here. */
2017
2018 opend = mips16_opcodes + bfd_mips16_num_opcodes;
2019 for (op = mips16_opcodes; op < opend; op++)
2020 {
2021 if (op->pinfo != INSN_MACRO
2022 && !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
2023 && (insn & op->mask) == op->match)
2024 {
2025 const char *s;
2026
2027 if (strchr (op->args, 'a') != NULL)
2028 {
2029 if (use_extend)
2030 {
2031 (*info->fprintf_func) (info->stream, "extend 0x%x",
2032 (unsigned int) extend);
2033 info->insn_type = dis_noninsn;
2034 return length - 2;
2035 }
2036
2037 use_extend = FALSE;
2038
2039 memaddr += 2;
2040
2041 status = (*info->read_memory_func) (memaddr, buffer, 2,
2042 info);
2043 if (status == 0)
2044 {
2045 use_extend = TRUE;
2046 if (info->endian == BFD_ENDIAN_BIG)
2047 extend = bfd_getb16 (buffer);
2048 else
2049 extend = bfd_getl16 (buffer);
2050 length += 2;
2051 }
2052 }
2053
2054 (*info->fprintf_func) (info->stream, "%s", op->name);
2055 if (op->args[0] != '\0')
2056 (*info->fprintf_func) (info->stream, "\t");
2057
2058 for (s = op->args; *s != '\0'; s++)
2059 {
2060 if (*s == ','
2061 && s[1] == 'w'
2062 && (((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)
2063 == ((insn >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY)))
2064 {
2065 /* Skip the register and the comma. */
2066 ++s;
2067 continue;
2068 }
2069 if (*s == ','
2070 && s[1] == 'v'
2071 && (((insn >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ)
2072 == ((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)))
2073 {
2074 /* Skip the register and the comma. */
2075 ++s;
2076 continue;
2077 }
2078 print_mips16_insn_arg (*s, op, insn, use_extend, extend, memaddr,
2079 info);
2080 }
2081
2082 /* Figure out branch instruction type and delay slot information. */
2083 if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
2084 info->branch_delay_insns = 1;
2085 if ((op->pinfo & (INSN_UNCOND_BRANCH_DELAY
2086 | MIPS16_INSN_UNCOND_BRANCH)) != 0)
2087 {
2088 if ((op->pinfo & INSN_WRITE_GPR_31) != 0)
2089 info->insn_type = dis_jsr;
2090 else
2091 info->insn_type = dis_branch;
2092 }
2093 else if ((op->pinfo & MIPS16_INSN_COND_BRANCH) != 0)
2094 info->insn_type = dis_condbranch;
2095
2096 return length;
2097 }
2098 }
2099
2100 if (use_extend)
2101 (*info->fprintf_func) (info->stream, "0x%x", extend | 0xf000);
2102 (*info->fprintf_func) (info->stream, "0x%x", insn);
2103 info->insn_type = dis_noninsn;
2104
2105 return length;
2106 }
2107
2108 /* In an environment where we do not know the symbol type of the
2109 instruction we are forced to assume that the low order bit of the
2110 instructions' address may mark it as a mips16 instruction. If we
2111 are single stepping, or the pc is within the disassembled function,
2112 this works. Otherwise, we need a clue. Sometimes. */
2113
2114 static int
2115 _print_insn_mips (bfd_vma memaddr,
2116 struct disassemble_info *info,
2117 enum bfd_endian endianness)
2118 {
2119 bfd_byte buffer[INSNLEN];
2120 int status;
2121
2122 set_default_mips_dis_options (info);
2123 parse_mips_dis_options (info->disassembler_options);
2124
2125 #if 1
2126 /* FIXME: If odd address, this is CLEARLY a mips 16 instruction. */
2127 /* Only a few tools will work this way. */
2128 if (memaddr & 0x01)
2129 return print_insn_mips16 (memaddr, info);
2130 #endif
2131
2132 #if SYMTAB_AVAILABLE
2133 if (info->mach == bfd_mach_mips16
2134 || (info->symbols != NULL
2135 && bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour
2136 && ELF_ST_IS_MIPS16 ((*(elf_symbol_type **) info->symbols)
2137 ->internal_elf_sym.st_other)))
2138 return print_insn_mips16 (memaddr, info);
2139 #endif
2140
2141 status = (*info->read_memory_func) (memaddr, buffer, INSNLEN, info);
2142 if (status == 0)
2143 {
2144 unsigned long insn;
2145
2146 if (endianness == BFD_ENDIAN_BIG)
2147 insn = (unsigned long) bfd_getb32 (buffer);
2148 else
2149 insn = (unsigned long) bfd_getl32 (buffer);
2150
2151 return print_insn_mips (memaddr, insn, info);
2152 }
2153 else
2154 {
2155 (*info->memory_error_func) (status, memaddr, info);
2156 return -1;
2157 }
2158 }
2159
2160 int
2161 print_insn_big_mips (bfd_vma memaddr, struct disassemble_info *info)
2162 {
2163 return _print_insn_mips (memaddr, info, BFD_ENDIAN_BIG);
2164 }
2165
2166 int
2167 print_insn_little_mips (bfd_vma memaddr, struct disassemble_info *info)
2168 {
2169 return _print_insn_mips (memaddr, info, BFD_ENDIAN_LITTLE);
2170 }
2171 \f
2172 void
2173 print_mips_disassembler_options (FILE *stream)
2174 {
2175 unsigned int i;
2176
2177 fprintf (stream, _("\n\
2178 The following MIPS specific disassembler options are supported for use\n\
2179 with the -M switch (multiple options should be separated by commas):\n"));
2180
2181 fprintf (stream, _("\n\
2182 gpr-names=ABI Print GPR names according to specified ABI.\n\
2183 Default: based on binary being disassembled.\n"));
2184
2185 fprintf (stream, _("\n\
2186 fpr-names=ABI Print FPR names according to specified ABI.\n\
2187 Default: numeric.\n"));
2188
2189 fprintf (stream, _("\n\
2190 cp0-names=ARCH Print CP0 register names according to\n\
2191 specified architecture.\n\
2192 Default: based on binary being disassembled.\n"));
2193
2194 fprintf (stream, _("\n\
2195 hwr-names=ARCH Print HWR names according to specified \n\
2196 architecture.\n\
2197 Default: based on binary being disassembled.\n"));
2198
2199 fprintf (stream, _("\n\
2200 reg-names=ABI Print GPR and FPR names according to\n\
2201 specified ABI.\n"));
2202
2203 fprintf (stream, _("\n\
2204 reg-names=ARCH Print CP0 register and HWR names according to\n\
2205 specified architecture.\n"));
2206
2207 fprintf (stream, _("\n\
2208 For the options above, the following values are supported for \"ABI\":\n\
2209 "));
2210 for (i = 0; i < ARRAY_SIZE (mips_abi_choices); i++)
2211 fprintf (stream, " %s", mips_abi_choices[i].name);
2212 fprintf (stream, _("\n"));
2213
2214 fprintf (stream, _("\n\
2215 For the options above, The following values are supported for \"ARCH\":\n\
2216 "));
2217 for (i = 0; i < ARRAY_SIZE (mips_arch_choices); i++)
2218 if (*mips_arch_choices[i].name != '\0')
2219 fprintf (stream, " %s", mips_arch_choices[i].name);
2220 fprintf (stream, _("\n"));
2221
2222 fprintf (stream, _("\n"));
2223 }
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