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
4 Free Software Foundation, Inc.
7 This file is part of GDB, GAS, and the GNU binutils.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
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. */
26 #include "libiberty.h"
27 #include "opcode/mips.h"
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. */
35 #if !defined(EMBEDDED_ENV)
36 #define SYMTAB_AVAILABLE 1
41 /* Mips instructions are at maximum this many bytes long. */
45 /* FIXME: These should be shared with gdb somehow. */
47 struct mips_cp0sel_name
51 const char * const name;
54 /* The mips16 registers. */
55 static const unsigned int mips16_to_32_reg_map[] =
57 16, 17, 2, 3, 4, 5, 6, 7
60 #define mips16_reg_names(rn) mips_gpr_names[mips16_to_32_reg_map[rn]]
63 static const char * const mips_gpr_names_numeric[32] =
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", "$31"
71 static const char * const mips_gpr_names_oldabi[32] =
73 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
74 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
75 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
76 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
79 static const char * const mips_gpr_names_newabi[32] =
81 "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
82 "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3",
83 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
84 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra"
87 static const char * const mips_fpr_names_numeric[32] =
89 "$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"
95 static const char * const mips_fpr_names_32[32] =
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"
103 static const char * const mips_fpr_names_n32[32] =
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"
111 static const char * const mips_fpr_names_64[32] =
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"
119 static const char * const mips_cp0_names_numeric[32] =
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"
127 static const char * const mips_cp0_names_mips3264[32] =
129 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
130 "c0_context", "c0_pagemask", "c0_wired", "$7",
131 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
132 "c0_status", "c0_cause", "c0_epc", "c0_prid",
133 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
134 "c0_xcontext", "$21", "$22", "c0_debug",
135 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
136 "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
139 static const struct mips_cp0sel_name mips_cp0sel_names_mips3264[] =
141 { 16, 1, "c0_config1" },
142 { 16, 2, "c0_config2" },
143 { 16, 3, "c0_config3" },
144 { 18, 1, "c0_watchlo,1" },
145 { 18, 2, "c0_watchlo,2" },
146 { 18, 3, "c0_watchlo,3" },
147 { 18, 4, "c0_watchlo,4" },
148 { 18, 5, "c0_watchlo,5" },
149 { 18, 6, "c0_watchlo,6" },
150 { 18, 7, "c0_watchlo,7" },
151 { 19, 1, "c0_watchhi,1" },
152 { 19, 2, "c0_watchhi,2" },
153 { 19, 3, "c0_watchhi,3" },
154 { 19, 4, "c0_watchhi,4" },
155 { 19, 5, "c0_watchhi,5" },
156 { 19, 6, "c0_watchhi,6" },
157 { 19, 7, "c0_watchhi,7" },
158 { 25, 1, "c0_perfcnt,1" },
159 { 25, 2, "c0_perfcnt,2" },
160 { 25, 3, "c0_perfcnt,3" },
161 { 25, 4, "c0_perfcnt,4" },
162 { 25, 5, "c0_perfcnt,5" },
163 { 25, 6, "c0_perfcnt,6" },
164 { 25, 7, "c0_perfcnt,7" },
165 { 27, 1, "c0_cacheerr,1" },
166 { 27, 2, "c0_cacheerr,2" },
167 { 27, 3, "c0_cacheerr,3" },
168 { 28, 1, "c0_datalo" },
169 { 29, 1, "c0_datahi" }
172 static const char * const mips_cp0_names_mips3264r2[32] =
174 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
175 "c0_context", "c0_pagemask", "c0_wired", "c0_hwrena",
176 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
177 "c0_status", "c0_cause", "c0_epc", "c0_prid",
178 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
179 "c0_xcontext", "$21", "$22", "c0_debug",
180 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr",
181 "c0_taglo", "c0_taghi", "c0_errorepc", "c0_desave",
184 static const struct mips_cp0sel_name mips_cp0sel_names_mips3264r2[] =
186 { 4, 1, "c0_contextconfig" },
187 { 0, 1, "c0_mvpcontrol" },
188 { 0, 2, "c0_mvpconf0" },
189 { 0, 3, "c0_mvpconf1" },
190 { 1, 1, "c0_vpecontrol" },
191 { 1, 2, "c0_vpeconf0" },
192 { 1, 3, "c0_vpeconf1" },
193 { 1, 4, "c0_yqmask" },
194 { 1, 5, "c0_vpeschedule" },
195 { 1, 6, "c0_vpeschefback" },
196 { 2, 1, "c0_tcstatus" },
197 { 2, 2, "c0_tcbind" },
198 { 2, 3, "c0_tcrestart" },
199 { 2, 4, "c0_tchalt" },
200 { 2, 5, "c0_tccontext" },
201 { 2, 6, "c0_tcschedule" },
202 { 2, 7, "c0_tcschefback" },
203 { 5, 1, "c0_pagegrain" },
204 { 6, 1, "c0_srsconf0" },
205 { 6, 2, "c0_srsconf1" },
206 { 6, 3, "c0_srsconf2" },
207 { 6, 4, "c0_srsconf3" },
208 { 6, 5, "c0_srsconf4" },
209 { 12, 1, "c0_intctl" },
210 { 12, 2, "c0_srsctl" },
211 { 12, 3, "c0_srsmap" },
212 { 15, 1, "c0_ebase" },
213 { 16, 1, "c0_config1" },
214 { 16, 2, "c0_config2" },
215 { 16, 3, "c0_config3" },
216 { 18, 1, "c0_watchlo,1" },
217 { 18, 2, "c0_watchlo,2" },
218 { 18, 3, "c0_watchlo,3" },
219 { 18, 4, "c0_watchlo,4" },
220 { 18, 5, "c0_watchlo,5" },
221 { 18, 6, "c0_watchlo,6" },
222 { 18, 7, "c0_watchlo,7" },
223 { 19, 1, "c0_watchhi,1" },
224 { 19, 2, "c0_watchhi,2" },
225 { 19, 3, "c0_watchhi,3" },
226 { 19, 4, "c0_watchhi,4" },
227 { 19, 5, "c0_watchhi,5" },
228 { 19, 6, "c0_watchhi,6" },
229 { 19, 7, "c0_watchhi,7" },
230 { 23, 1, "c0_tracecontrol" },
231 { 23, 2, "c0_tracecontrol2" },
232 { 23, 3, "c0_usertracedata" },
233 { 23, 4, "c0_tracebpc" },
234 { 25, 1, "c0_perfcnt,1" },
235 { 25, 2, "c0_perfcnt,2" },
236 { 25, 3, "c0_perfcnt,3" },
237 { 25, 4, "c0_perfcnt,4" },
238 { 25, 5, "c0_perfcnt,5" },
239 { 25, 6, "c0_perfcnt,6" },
240 { 25, 7, "c0_perfcnt,7" },
241 { 27, 1, "c0_cacheerr,1" },
242 { 27, 2, "c0_cacheerr,2" },
243 { 27, 3, "c0_cacheerr,3" },
244 { 28, 1, "c0_datalo" },
245 { 28, 2, "c0_taglo1" },
246 { 28, 3, "c0_datalo1" },
247 { 28, 4, "c0_taglo2" },
248 { 28, 5, "c0_datalo2" },
249 { 28, 6, "c0_taglo3" },
250 { 28, 7, "c0_datalo3" },
251 { 29, 1, "c0_datahi" },
252 { 29, 2, "c0_taghi1" },
253 { 29, 3, "c0_datahi1" },
254 { 29, 4, "c0_taghi2" },
255 { 29, 5, "c0_datahi2" },
256 { 29, 6, "c0_taghi3" },
257 { 29, 7, "c0_datahi3" },
260 /* SB-1: MIPS64 (mips_cp0_names_mips3264) with minor mods. */
261 static const char * const mips_cp0_names_sb1[32] =
263 "c0_index", "c0_random", "c0_entrylo0", "c0_entrylo1",
264 "c0_context", "c0_pagemask", "c0_wired", "$7",
265 "c0_badvaddr", "c0_count", "c0_entryhi", "c0_compare",
266 "c0_status", "c0_cause", "c0_epc", "c0_prid",
267 "c0_config", "c0_lladdr", "c0_watchlo", "c0_watchhi",
268 "c0_xcontext", "$21", "$22", "c0_debug",
269 "c0_depc", "c0_perfcnt", "c0_errctl", "c0_cacheerr_i",
270 "c0_taglo_i", "c0_taghi_i", "c0_errorepc", "c0_desave",
273 static const struct mips_cp0sel_name mips_cp0sel_names_sb1[] =
275 { 16, 1, "c0_config1" },
276 { 18, 1, "c0_watchlo,1" },
277 { 19, 1, "c0_watchhi,1" },
278 { 22, 0, "c0_perftrace" },
279 { 23, 3, "c0_edebug" },
280 { 25, 1, "c0_perfcnt,1" },
281 { 25, 2, "c0_perfcnt,2" },
282 { 25, 3, "c0_perfcnt,3" },
283 { 25, 4, "c0_perfcnt,4" },
284 { 25, 5, "c0_perfcnt,5" },
285 { 25, 6, "c0_perfcnt,6" },
286 { 25, 7, "c0_perfcnt,7" },
287 { 26, 1, "c0_buserr_pa" },
288 { 27, 1, "c0_cacheerr_d" },
289 { 27, 3, "c0_cacheerr_d_pa" },
290 { 28, 1, "c0_datalo_i" },
291 { 28, 2, "c0_taglo_d" },
292 { 28, 3, "c0_datalo_d" },
293 { 29, 1, "c0_datahi_i" },
294 { 29, 2, "c0_taghi_d" },
295 { 29, 3, "c0_datahi_d" },
298 static const char * const mips_hwr_names_numeric[32] =
300 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7",
301 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
302 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
303 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
306 static const char * const mips_hwr_names_mips3264r2[32] =
308 "hwr_cpunum", "hwr_synci_step", "hwr_cc", "hwr_ccres",
309 "$4", "$5", "$6", "$7",
310 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15",
311 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23",
312 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31"
315 struct mips_abi_choice
318 const char * const *gpr_names;
319 const char * const *fpr_names;
322 struct mips_abi_choice mips_abi_choices[] =
324 { "numeric", mips_gpr_names_numeric, mips_fpr_names_numeric },
325 { "32", mips_gpr_names_oldabi, mips_fpr_names_32 },
326 { "n32", mips_gpr_names_newabi, mips_fpr_names_n32 },
327 { "64", mips_gpr_names_newabi, mips_fpr_names_64 },
330 struct mips_arch_choice
334 unsigned long bfd_mach;
337 const char * const *cp0_names;
338 const struct mips_cp0sel_name *cp0sel_names;
339 unsigned int cp0sel_names_len;
340 const char * const *hwr_names;
343 const struct mips_arch_choice mips_arch_choices[] =
345 { "numeric", 0, 0, 0, 0,
346 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
348 { "r3000", 1, bfd_mach_mips3000, CPU_R3000, ISA_MIPS1,
349 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
350 { "r3900", 1, bfd_mach_mips3900, CPU_R3900, ISA_MIPS1,
351 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
352 { "r4000", 1, bfd_mach_mips4000, CPU_R4000, ISA_MIPS3,
353 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
354 { "r4010", 1, bfd_mach_mips4010, CPU_R4010, ISA_MIPS2,
355 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
356 { "vr4100", 1, bfd_mach_mips4100, CPU_VR4100, ISA_MIPS3,
357 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
358 { "vr4111", 1, bfd_mach_mips4111, CPU_R4111, ISA_MIPS3,
359 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
360 { "vr4120", 1, bfd_mach_mips4120, CPU_VR4120, ISA_MIPS3,
361 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
362 { "r4300", 1, bfd_mach_mips4300, CPU_R4300, ISA_MIPS3,
363 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
364 { "r4400", 1, bfd_mach_mips4400, CPU_R4400, ISA_MIPS3,
365 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
366 { "r4600", 1, bfd_mach_mips4600, CPU_R4600, ISA_MIPS3,
367 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
368 { "r4650", 1, bfd_mach_mips4650, CPU_R4650, ISA_MIPS3,
369 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
370 { "r5000", 1, bfd_mach_mips5000, CPU_R5000, ISA_MIPS4,
371 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
372 { "vr5400", 1, bfd_mach_mips5400, CPU_VR5400, ISA_MIPS4,
373 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
374 { "vr5500", 1, bfd_mach_mips5500, CPU_VR5500, ISA_MIPS4,
375 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
376 { "r6000", 1, bfd_mach_mips6000, CPU_R6000, ISA_MIPS2,
377 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
378 { "rm7000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
379 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
380 { "rm9000", 1, bfd_mach_mips7000, CPU_RM7000, ISA_MIPS4,
381 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
382 { "r8000", 1, bfd_mach_mips8000, CPU_R8000, ISA_MIPS4,
383 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
384 { "r10000", 1, bfd_mach_mips10000, CPU_R10000, ISA_MIPS4,
385 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
386 { "r12000", 1, bfd_mach_mips12000, CPU_R12000, ISA_MIPS4,
387 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
388 { "mips5", 1, bfd_mach_mips5, CPU_MIPS5, ISA_MIPS5,
389 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
391 /* For stock MIPS32, disassemble all applicable MIPS-specified ASEs.
392 Note that MIPS-3D and MDMX are not applicable to MIPS32. (See
393 _MIPS32 Architecture For Programmers Volume I: Introduction to the
394 MIPS32 Architecture_ (MIPS Document Number MD00082, Revision 0.95),
396 { "mips32", 1, bfd_mach_mipsisa32, CPU_MIPS32,
397 ISA_MIPS32 | INSN_MIPS16 | INSN_DSP,
398 mips_cp0_names_mips3264,
399 mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
400 mips_hwr_names_numeric },
402 { "mips32r2", 1, bfd_mach_mipsisa32r2, CPU_MIPS32R2,
403 ISA_MIPS32R2 | INSN_MIPS16 | INSN_DSP | INSN_MT,
404 mips_cp0_names_mips3264r2,
405 mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
406 mips_hwr_names_mips3264r2 },
408 /* For stock MIPS64, disassemble all applicable MIPS-specified ASEs. */
409 { "mips64", 1, bfd_mach_mipsisa64, CPU_MIPS64,
410 ISA_MIPS64 | INSN_MIPS16 | INSN_MIPS3D | INSN_MDMX | INSN_DSP,
411 mips_cp0_names_mips3264,
412 mips_cp0sel_names_mips3264, ARRAY_SIZE (mips_cp0sel_names_mips3264),
413 mips_hwr_names_numeric },
415 { "mips64r2", 1, bfd_mach_mipsisa64r2, CPU_MIPS64R2,
416 ISA_MIPS64R2 | INSN_MIPS16 | INSN_MIPS3D | INSN_MDMX | INSN_DSP,
417 mips_cp0_names_mips3264r2,
418 mips_cp0sel_names_mips3264r2, ARRAY_SIZE (mips_cp0sel_names_mips3264r2),
419 mips_hwr_names_mips3264r2 },
421 { "sb1", 1, bfd_mach_mips_sb1, CPU_SB1,
422 ISA_MIPS64 | INSN_MIPS3D | INSN_SB1,
424 mips_cp0sel_names_sb1, ARRAY_SIZE (mips_cp0sel_names_sb1),
425 mips_hwr_names_numeric },
427 /* This entry, mips16, is here only for ISA/processor selection; do
428 not print its name. */
429 { "", 1, bfd_mach_mips16, CPU_MIPS16, ISA_MIPS3 | INSN_MIPS16,
430 mips_cp0_names_numeric, NULL, 0, mips_hwr_names_numeric },
433 /* ISA and processor type to disassemble for, and register names to use.
434 set_default_mips_dis_options and parse_mips_dis_options fill in these
436 static int mips_processor;
438 static const char * const *mips_gpr_names;
439 static const char * const *mips_fpr_names;
440 static const char * const *mips_cp0_names;
441 static const struct mips_cp0sel_name *mips_cp0sel_names;
442 static int mips_cp0sel_names_len;
443 static const char * const *mips_hwr_names;
446 static int no_aliases; /* If set disassemble as most general inst. */
448 static const struct mips_abi_choice *
449 choose_abi_by_name (const char *name, unsigned int namelen)
451 const struct mips_abi_choice *c;
454 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_abi_choices) && c == NULL; i++)
455 if (strncmp (mips_abi_choices[i].name, name, namelen) == 0
456 && strlen (mips_abi_choices[i].name) == namelen)
457 c = &mips_abi_choices[i];
462 static const struct mips_arch_choice *
463 choose_arch_by_name (const char *name, unsigned int namelen)
465 const struct mips_arch_choice *c = NULL;
468 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
469 if (strncmp (mips_arch_choices[i].name, name, namelen) == 0
470 && strlen (mips_arch_choices[i].name) == namelen)
471 c = &mips_arch_choices[i];
476 static const struct mips_arch_choice *
477 choose_arch_by_number (unsigned long mach)
479 static unsigned long hint_bfd_mach;
480 static const struct mips_arch_choice *hint_arch_choice;
481 const struct mips_arch_choice *c;
484 /* We optimize this because even if the user specifies no
485 flags, this will be done for every instruction! */
486 if (hint_bfd_mach == mach
487 && hint_arch_choice != NULL
488 && hint_arch_choice->bfd_mach == hint_bfd_mach)
489 return hint_arch_choice;
491 for (i = 0, c = NULL; i < ARRAY_SIZE (mips_arch_choices) && c == NULL; i++)
493 if (mips_arch_choices[i].bfd_mach_valid
494 && mips_arch_choices[i].bfd_mach == mach)
496 c = &mips_arch_choices[i];
497 hint_bfd_mach = mach;
498 hint_arch_choice = c;
504 /* Check if the object uses NewABI conventions. */
507 is_newabi (Elf_Internal_Ehdr *header)
509 /* There are no old-style ABIs which use 64-bit ELF. */
510 if (header->e_ident[EI_CLASS] == ELFCLASS64)
513 /* If a 32-bit ELF file, n32 is a new-style ABI. */
514 if ((header->e_flags & EF_MIPS_ABI2) != 0)
521 set_default_mips_dis_options (struct disassemble_info *info)
523 const struct mips_arch_choice *chosen_arch;
525 /* Defaults: mipsIII/r3000 (?!), (o)32-style ("oldabi") GPR names,
526 and numeric FPR, CP0 register, and HWR names. */
527 mips_isa = ISA_MIPS3;
528 mips_processor = CPU_R3000;
529 mips_gpr_names = mips_gpr_names_oldabi;
530 mips_fpr_names = mips_fpr_names_numeric;
531 mips_cp0_names = mips_cp0_names_numeric;
532 mips_cp0sel_names = NULL;
533 mips_cp0sel_names_len = 0;
534 mips_hwr_names = mips_hwr_names_numeric;
537 /* If an ELF "newabi" binary, use the n32/(n)64 GPR names. */
538 if (info->flavour == bfd_target_elf_flavour && info->section != NULL)
540 Elf_Internal_Ehdr *header;
542 header = elf_elfheader (info->section->owner);
543 if (is_newabi (header))
544 mips_gpr_names = mips_gpr_names_newabi;
547 /* Set ISA, architecture, and cp0 register names as best we can. */
548 #if ! SYMTAB_AVAILABLE
549 /* This is running out on a target machine, not in a host tool.
550 FIXME: Where does mips_target_info come from? */
551 target_processor = mips_target_info.processor;
552 mips_isa = mips_target_info.isa;
554 chosen_arch = choose_arch_by_number (info->mach);
555 if (chosen_arch != NULL)
557 mips_processor = chosen_arch->processor;
558 mips_isa = chosen_arch->isa;
559 mips_cp0_names = chosen_arch->cp0_names;
560 mips_cp0sel_names = chosen_arch->cp0sel_names;
561 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
562 mips_hwr_names = chosen_arch->hwr_names;
568 parse_mips_dis_option (const char *option, unsigned int len)
570 unsigned int i, optionlen, vallen;
572 const struct mips_abi_choice *chosen_abi;
573 const struct mips_arch_choice *chosen_arch;
575 /* Try to match options that are simple flags */
576 if (strncmp (option, "no-aliases", 10) == 0)
582 /* Look for the = that delimits the end of the option name. */
583 for (i = 0; i < len; i++)
584 if (option[i] == '=')
587 if (i == 0) /* Invalid option: no name before '='. */
589 if (i == len) /* Invalid option: no '='. */
591 if (i == (len - 1)) /* Invalid option: no value after '='. */
595 val = option + (optionlen + 1);
596 vallen = len - (optionlen + 1);
598 if (strncmp ("gpr-names", option, optionlen) == 0
599 && strlen ("gpr-names") == optionlen)
601 chosen_abi = choose_abi_by_name (val, vallen);
602 if (chosen_abi != NULL)
603 mips_gpr_names = chosen_abi->gpr_names;
607 if (strncmp ("fpr-names", option, optionlen) == 0
608 && strlen ("fpr-names") == optionlen)
610 chosen_abi = choose_abi_by_name (val, vallen);
611 if (chosen_abi != NULL)
612 mips_fpr_names = chosen_abi->fpr_names;
616 if (strncmp ("cp0-names", option, optionlen) == 0
617 && strlen ("cp0-names") == optionlen)
619 chosen_arch = choose_arch_by_name (val, vallen);
620 if (chosen_arch != NULL)
622 mips_cp0_names = chosen_arch->cp0_names;
623 mips_cp0sel_names = chosen_arch->cp0sel_names;
624 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
629 if (strncmp ("hwr-names", option, optionlen) == 0
630 && strlen ("hwr-names") == optionlen)
632 chosen_arch = choose_arch_by_name (val, vallen);
633 if (chosen_arch != NULL)
634 mips_hwr_names = chosen_arch->hwr_names;
638 if (strncmp ("reg-names", option, optionlen) == 0
639 && strlen ("reg-names") == optionlen)
641 /* We check both ABI and ARCH here unconditionally, so
642 that "numeric" will do the desirable thing: select
643 numeric register names for all registers. Other than
644 that, a given name probably won't match both. */
645 chosen_abi = choose_abi_by_name (val, vallen);
646 if (chosen_abi != NULL)
648 mips_gpr_names = chosen_abi->gpr_names;
649 mips_fpr_names = chosen_abi->fpr_names;
651 chosen_arch = choose_arch_by_name (val, vallen);
652 if (chosen_arch != NULL)
654 mips_cp0_names = chosen_arch->cp0_names;
655 mips_cp0sel_names = chosen_arch->cp0sel_names;
656 mips_cp0sel_names_len = chosen_arch->cp0sel_names_len;
657 mips_hwr_names = chosen_arch->hwr_names;
662 /* Invalid option. */
666 parse_mips_dis_options (const char *options)
668 const char *option_end;
673 while (*options != '\0')
675 /* Skip empty options. */
682 /* We know that *options is neither NUL or a comma. */
683 option_end = options + 1;
684 while (*option_end != ',' && *option_end != '\0')
687 parse_mips_dis_option (options, option_end - options);
689 /* Go on to the next one. If option_end points to a comma, it
690 will be skipped above. */
691 options = option_end;
695 static const struct mips_cp0sel_name *
696 lookup_mips_cp0sel_name (const struct mips_cp0sel_name *names,
703 for (i = 0; i < len; i++)
704 if (names[i].cp0reg == cp0reg && names[i].sel == sel)
709 /* Print insn arguments for 32/64-bit code. */
712 print_insn_args (const char *d,
713 register unsigned long int l,
715 struct disassemble_info *info,
716 const struct mips_opcode *opp)
719 unsigned int lsb, msb, msbd;
723 for (; *d != '\0'; d++)
732 (*info->fprintf_func) (info->stream, "%c", *d);
736 /* Extension character; switch for second char. */
741 /* xgettext:c-format */
742 (*info->fprintf_func) (info->stream,
743 _("# internal error, incomplete extension sequence (+)"));
747 lsb = (l >> OP_SH_SHAMT) & OP_MASK_SHAMT;
748 (*info->fprintf_func) (info->stream, "0x%x", lsb);
752 msb = (l >> OP_SH_INSMSB) & OP_MASK_INSMSB;
753 (*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
757 (*info->fprintf_func) (info->stream, "0x%lx",
758 (l >> OP_SH_UDI1) & OP_MASK_UDI1);
762 (*info->fprintf_func) (info->stream, "0x%lx",
763 (l >> OP_SH_UDI2) & OP_MASK_UDI2);
767 (*info->fprintf_func) (info->stream, "0x%lx",
768 (l >> OP_SH_UDI3) & OP_MASK_UDI3);
772 (*info->fprintf_func) (info->stream, "0x%lx",
773 (l >> OP_SH_UDI4) & OP_MASK_UDI4);
778 msbd = (l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD;
779 (*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
784 const struct mips_cp0sel_name *n;
785 unsigned int cp0reg, sel;
787 cp0reg = (l >> OP_SH_RD) & OP_MASK_RD;
788 sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
790 /* CP0 register including 'sel' code for mtcN (et al.), to be
791 printed textually if known. If not known, print both
792 CP0 register name and sel numerically since CP0 register
793 with sel 0 may have a name unrelated to register being
795 n = lookup_mips_cp0sel_name(mips_cp0sel_names,
796 mips_cp0sel_names_len, cp0reg, sel);
798 (*info->fprintf_func) (info->stream, "%s", n->name);
800 (*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
805 lsb = ((l >> OP_SH_SHAMT) & OP_MASK_SHAMT) + 32;
806 (*info->fprintf_func) (info->stream, "0x%x", lsb);
810 msb = ((l >> OP_SH_INSMSB) & OP_MASK_INSMSB) + 32;
811 (*info->fprintf_func) (info->stream, "0x%x", msb - lsb + 1);
815 msbd = ((l >> OP_SH_EXTMSBD) & OP_MASK_EXTMSBD) + 32;
816 (*info->fprintf_func) (info->stream, "0x%x", msbd + 1);
819 case 't': /* Coprocessor 0 reg name */
820 (*info->fprintf_func) (info->stream, "%s",
821 mips_cp0_names[(l >> OP_SH_RT) &
825 case 'T': /* Coprocessor 0 reg name */
827 const struct mips_cp0sel_name *n;
828 unsigned int cp0reg, sel;
830 cp0reg = (l >> OP_SH_RT) & OP_MASK_RT;
831 sel = (l >> OP_SH_SEL) & OP_MASK_SEL;
833 /* CP0 register including 'sel' code for mftc0, to be
834 printed textually if known. If not known, print both
835 CP0 register name and sel numerically since CP0 register
836 with sel 0 may have a name unrelated to register being
838 n = lookup_mips_cp0sel_name(mips_cp0sel_names,
839 mips_cp0sel_names_len, cp0reg, sel);
841 (*info->fprintf_func) (info->stream, "%s", n->name);
843 (*info->fprintf_func) (info->stream, "$%d,%d", cp0reg, sel);
848 /* xgettext:c-format */
849 (*info->fprintf_func) (info->stream,
850 _("# internal error, undefined extension sequence (+%c)"),
857 (*info->fprintf_func) (info->stream, "0x%lx",
858 (l >> OP_SH_SA3) & OP_MASK_SA3);
862 (*info->fprintf_func) (info->stream, "0x%lx",
863 (l >> OP_SH_SA4) & OP_MASK_SA4);
867 (*info->fprintf_func) (info->stream, "0x%lx",
868 (l >> OP_SH_IMM8) & OP_MASK_IMM8);
872 (*info->fprintf_func) (info->stream, "0x%lx",
873 (l >> OP_SH_RS) & OP_MASK_RS);
877 (*info->fprintf_func) (info->stream, "$ac%ld",
878 (l >> OP_SH_DSPACC) & OP_MASK_DSPACC);
882 (*info->fprintf_func) (info->stream, "0x%lx",
883 (l >> OP_SH_WRDSP) & OP_MASK_WRDSP);
887 (*info->fprintf_func) (info->stream, "$ac%ld",
888 (l >> OP_SH_DSPACC_S) & OP_MASK_DSPACC_S);
891 case '0': /* dsp 6-bit signed immediate in bit 20 */
892 delta = ((l >> OP_SH_DSPSFT) & OP_MASK_DSPSFT);
893 if (delta & 0x20) /* test sign bit */
894 delta |= ~OP_MASK_DSPSFT;
895 (*info->fprintf_func) (info->stream, "%d", delta);
898 case ':': /* dsp 7-bit signed immediate in bit 19 */
899 delta = ((l >> OP_SH_DSPSFT_7) & OP_MASK_DSPSFT_7);
900 if (delta & 0x40) /* test sign bit */
901 delta |= ~OP_MASK_DSPSFT_7;
902 (*info->fprintf_func) (info->stream, "%d", delta);
906 (*info->fprintf_func) (info->stream, "0x%lx",
907 (l >> OP_SH_RDDSP) & OP_MASK_RDDSP);
910 case '@': /* dsp 10-bit signed immediate in bit 16 */
911 delta = ((l >> OP_SH_IMM10) & OP_MASK_IMM10);
912 if (delta & 0x200) /* test sign bit */
913 delta |= ~OP_MASK_IMM10;
914 (*info->fprintf_func) (info->stream, "%d", delta);
918 (*info->fprintf_func) (info->stream, "%ld",
919 (l >> OP_SH_MT_U) & OP_MASK_MT_U);
923 (*info->fprintf_func) (info->stream, "%ld",
924 (l >> OP_SH_MT_H) & OP_MASK_MT_H);
928 (*info->fprintf_func) (info->stream, "$ac%ld",
929 (l >> OP_SH_MTACC_T) & OP_MASK_MTACC_T);
933 (*info->fprintf_func) (info->stream, "$ac%ld",
934 (l >> OP_SH_MTACC_D) & OP_MASK_MTACC_D);
938 /* Coprocessor register for CTTC1, MTTC2, MTHC2, CTTC2. */
939 (*info->fprintf_func) (info->stream, "$%ld",
940 (l >> OP_SH_RD) & OP_MASK_RD);
947 (*info->fprintf_func) (info->stream, "%s",
948 mips_gpr_names[(l >> OP_SH_RS) & OP_MASK_RS]);
953 (*info->fprintf_func) (info->stream, "%s",
954 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
959 (*info->fprintf_func) (info->stream, "0x%lx",
960 (l >> OP_SH_IMMEDIATE) & OP_MASK_IMMEDIATE);
963 case 'j': /* Same as i, but sign-extended. */
965 delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
968 (*info->fprintf_func) (info->stream, "%d",
973 (*info->fprintf_func) (info->stream, "0x%x",
974 (unsigned int) ((l >> OP_SH_PREFX)
979 (*info->fprintf_func) (info->stream, "0x%x",
980 (unsigned int) ((l >> OP_SH_CACHE)
985 info->target = (((pc + 4) & ~(bfd_vma) 0x0fffffff)
986 | (((l >> OP_SH_TARGET) & OP_MASK_TARGET) << 2));
987 (*info->print_address_func) (info->target, info);
991 /* Sign extend the displacement. */
992 delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
995 info->target = (delta << 2) + pc + INSNLEN;
996 (*info->print_address_func) (info->target, info);
1000 (*info->fprintf_func) (info->stream, "%s",
1001 mips_gpr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1006 /* First check for both rd and rt being equal. */
1007 unsigned int reg = (l >> OP_SH_RD) & OP_MASK_RD;
1008 if (reg == ((l >> OP_SH_RT) & OP_MASK_RT))
1009 (*info->fprintf_func) (info->stream, "%s",
1010 mips_gpr_names[reg]);
1013 /* If one is zero use the other. */
1015 (*info->fprintf_func) (info->stream, "%s",
1016 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1017 else if (((l >> OP_SH_RT) & OP_MASK_RT) == 0)
1018 (*info->fprintf_func) (info->stream, "%s",
1019 mips_gpr_names[reg]);
1020 else /* Bogus, result depends on processor. */
1021 (*info->fprintf_func) (info->stream, "%s or %s",
1022 mips_gpr_names[reg],
1023 mips_gpr_names[(l >> OP_SH_RT) & OP_MASK_RT]);
1029 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
1033 (*info->fprintf_func) (info->stream, "0x%lx",
1034 (l >> OP_SH_SHAMT) & OP_MASK_SHAMT);
1038 (*info->fprintf_func) (info->stream, "0x%lx",
1039 (l >> OP_SH_CODE) & OP_MASK_CODE);
1043 (*info->fprintf_func) (info->stream, "0x%lx",
1044 (l >> OP_SH_CODE2) & OP_MASK_CODE2);
1048 (*info->fprintf_func) (info->stream, "0x%lx",
1049 (l >> OP_SH_COPZ) & OP_MASK_COPZ);
1053 (*info->fprintf_func) (info->stream, "0x%lx",
1055 (l >> OP_SH_CODE20) & OP_MASK_CODE20);
1059 (*info->fprintf_func) (info->stream, "0x%lx",
1060 (l >> OP_SH_CODE19) & OP_MASK_CODE19);
1065 (*info->fprintf_func) (info->stream, "%s",
1066 mips_fpr_names[(l >> OP_SH_FS) & OP_MASK_FS]);
1071 (*info->fprintf_func) (info->stream, "%s",
1072 mips_fpr_names[(l >> OP_SH_FT) & OP_MASK_FT]);
1076 (*info->fprintf_func) (info->stream, "%s",
1077 mips_fpr_names[(l >> OP_SH_FD) & OP_MASK_FD]);
1081 (*info->fprintf_func) (info->stream, "%s",
1082 mips_fpr_names[(l >> OP_SH_FR) & OP_MASK_FR]);
1086 /* Coprocessor register for lwcN instructions, et al.
1088 Note that there is no load/store cp0 instructions, and
1089 that FPU (cp1) instructions disassemble this field using
1090 'T' format. Therefore, until we gain understanding of
1091 cp2 register names, we can simply print the register
1093 (*info->fprintf_func) (info->stream, "$%ld",
1094 (l >> OP_SH_RT) & OP_MASK_RT);
1098 /* Coprocessor register for mtcN instructions, et al. Note
1099 that FPU (cp1) instructions disassemble this field using
1100 'S' format. Therefore, we only need to worry about cp0,
1102 op = (l >> OP_SH_OP) & OP_MASK_OP;
1103 if (op == OP_OP_COP0)
1104 (*info->fprintf_func) (info->stream, "%s",
1105 mips_cp0_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1107 (*info->fprintf_func) (info->stream, "$%ld",
1108 (l >> OP_SH_RD) & OP_MASK_RD);
1112 (*info->fprintf_func) (info->stream, "%s",
1113 mips_hwr_names[(l >> OP_SH_RD) & OP_MASK_RD]);
1117 (*info->fprintf_func) (info->stream,
1118 ((opp->pinfo & (FP_D | FP_S)) != 0
1119 ? "$fcc%ld" : "$cc%ld"),
1120 (l >> OP_SH_BCC) & OP_MASK_BCC);
1124 (*info->fprintf_func) (info->stream, "$fcc%ld",
1125 (l >> OP_SH_CCC) & OP_MASK_CCC);
1129 (*info->fprintf_func) (info->stream, "%ld",
1130 (l >> OP_SH_PERFREG) & OP_MASK_PERFREG);
1134 (*info->fprintf_func) (info->stream, "%ld",
1135 (l >> OP_SH_VECBYTE) & OP_MASK_VECBYTE);
1139 (*info->fprintf_func) (info->stream, "%ld",
1140 (l >> OP_SH_VECALIGN) & OP_MASK_VECALIGN);
1144 (*info->fprintf_func) (info->stream, "%ld",
1145 (l >> OP_SH_SEL) & OP_MASK_SEL);
1149 (*info->fprintf_func) (info->stream, "%ld",
1150 (l >> OP_SH_ALN) & OP_MASK_ALN);
1155 unsigned int vsel = (l >> OP_SH_VSEL) & OP_MASK_VSEL;
1157 if ((vsel & 0x10) == 0)
1162 for (fmt = 0; fmt < 3; fmt++, vsel >>= 1)
1163 if ((vsel & 1) == 0)
1165 (*info->fprintf_func) (info->stream, "$v%ld[%d]",
1166 (l >> OP_SH_FT) & OP_MASK_FT,
1169 else if ((vsel & 0x08) == 0)
1171 (*info->fprintf_func) (info->stream, "$v%ld",
1172 (l >> OP_SH_FT) & OP_MASK_FT);
1176 (*info->fprintf_func) (info->stream, "0x%lx",
1177 (l >> OP_SH_FT) & OP_MASK_FT);
1183 (*info->fprintf_func) (info->stream, "$v%ld",
1184 (l >> OP_SH_FD) & OP_MASK_FD);
1188 (*info->fprintf_func) (info->stream, "$v%ld",
1189 (l >> OP_SH_FS) & OP_MASK_FS);
1193 (*info->fprintf_func) (info->stream, "$v%ld",
1194 (l >> OP_SH_FT) & OP_MASK_FT);
1198 /* xgettext:c-format */
1199 (*info->fprintf_func) (info->stream,
1200 _("# internal error, undefined modifier(%c)"),
1207 /* Print the mips instruction at address MEMADDR in debugged memory,
1208 on using INFO. Returns length of the instruction, in bytes, which is
1209 always INSNLEN. BIGENDIAN must be 1 if this is big-endian code, 0 if
1210 this is little-endian code. */
1213 print_insn_mips (bfd_vma memaddr,
1214 unsigned long int word,
1215 struct disassemble_info *info)
1217 const struct mips_opcode *op;
1218 static bfd_boolean init = 0;
1219 static const struct mips_opcode *mips_hash[OP_MASK_OP + 1];
1221 /* Build a hash table to shorten the search time. */
1226 for (i = 0; i <= OP_MASK_OP; i++)
1228 for (op = mips_opcodes; op < &mips_opcodes[NUMOPCODES]; op++)
1230 if (op->pinfo == INSN_MACRO
1231 || (no_aliases && (op->pinfo2 & INSN2_ALIAS)))
1233 if (i == ((op->match >> OP_SH_OP) & OP_MASK_OP))
1244 info->bytes_per_chunk = INSNLEN;
1245 info->display_endian = info->endian;
1246 info->insn_info_valid = 1;
1247 info->branch_delay_insns = 0;
1248 info->data_size = 0;
1249 info->insn_type = dis_nonbranch;
1253 op = mips_hash[(word >> OP_SH_OP) & OP_MASK_OP];
1256 for (; op < &mips_opcodes[NUMOPCODES]; op++)
1258 if (op->pinfo != INSN_MACRO
1259 && !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
1260 && (word & op->mask) == op->match)
1264 /* We always allow to disassemble the jalx instruction. */
1265 if (! OPCODE_IS_MEMBER (op, mips_isa, mips_processor)
1266 && strcmp (op->name, "jalx"))
1269 /* Figure out instruction type and branch delay information. */
1270 if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
1272 if ((info->insn_type & INSN_WRITE_GPR_31) != 0)
1273 info->insn_type = dis_jsr;
1275 info->insn_type = dis_branch;
1276 info->branch_delay_insns = 1;
1278 else if ((op->pinfo & (INSN_COND_BRANCH_DELAY
1279 | INSN_COND_BRANCH_LIKELY)) != 0)
1281 if ((info->insn_type & INSN_WRITE_GPR_31) != 0)
1282 info->insn_type = dis_condjsr;
1284 info->insn_type = dis_condbranch;
1285 info->branch_delay_insns = 1;
1287 else if ((op->pinfo & (INSN_STORE_MEMORY
1288 | INSN_LOAD_MEMORY_DELAY)) != 0)
1289 info->insn_type = dis_dref;
1291 (*info->fprintf_func) (info->stream, "%s", op->name);
1294 if (d != NULL && *d != '\0')
1296 (*info->fprintf_func) (info->stream, "\t");
1297 print_insn_args (d, word, memaddr, info, op);
1305 /* Handle undefined instructions. */
1306 info->insn_type = dis_noninsn;
1307 (*info->fprintf_func) (info->stream, "0x%lx", word);
1311 /* Disassemble an operand for a mips16 instruction. */
1314 print_mips16_insn_arg (char type,
1315 const struct mips_opcode *op,
1317 bfd_boolean use_extend,
1320 struct disassemble_info *info)
1327 (*info->fprintf_func) (info->stream, "%c", type);
1332 (*info->fprintf_func) (info->stream, "%s",
1333 mips16_reg_names(((l >> MIPS16OP_SH_RY)
1334 & MIPS16OP_MASK_RY)));
1339 (*info->fprintf_func) (info->stream, "%s",
1340 mips16_reg_names(((l >> MIPS16OP_SH_RX)
1341 & MIPS16OP_MASK_RX)));
1345 (*info->fprintf_func) (info->stream, "%s",
1346 mips16_reg_names(((l >> MIPS16OP_SH_RZ)
1347 & MIPS16OP_MASK_RZ)));
1351 (*info->fprintf_func) (info->stream, "%s",
1352 mips16_reg_names(((l >> MIPS16OP_SH_MOVE32Z)
1353 & MIPS16OP_MASK_MOVE32Z)));
1357 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[0]);
1361 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[29]);
1365 (*info->fprintf_func) (info->stream, "$pc");
1369 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[31]);
1373 (*info->fprintf_func) (info->stream, "%s",
1374 mips_gpr_names[((l >> MIPS16OP_SH_REGR32)
1375 & MIPS16OP_MASK_REGR32)]);
1379 (*info->fprintf_func) (info->stream, "%s",
1380 mips_gpr_names[MIPS16OP_EXTRACT_REG32R (l)]);
1406 int immed, nbits, shift, signedp, extbits, pcrel, extu, branch;
1418 immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
1424 immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
1430 immed = (l >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ;
1436 immed = (l >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX;
1442 immed = (l >> MIPS16OP_SH_IMM4) & MIPS16OP_MASK_IMM4;
1448 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1449 info->insn_type = dis_dref;
1450 info->data_size = 1;
1455 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1456 info->insn_type = dis_dref;
1457 info->data_size = 2;
1462 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1463 if ((op->pinfo & MIPS16_INSN_READ_PC) == 0
1464 && (op->pinfo & MIPS16_INSN_READ_SP) == 0)
1466 info->insn_type = dis_dref;
1467 info->data_size = 4;
1473 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1474 info->insn_type = dis_dref;
1475 info->data_size = 8;
1479 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1484 immed = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
1488 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1493 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1494 /* FIXME: This might be lw, or it might be addiu to $sp or
1495 $pc. We assume it's load. */
1496 info->insn_type = dis_dref;
1497 info->data_size = 4;
1502 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1503 info->insn_type = dis_dref;
1504 info->data_size = 8;
1508 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1513 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1519 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1524 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1528 info->insn_type = dis_condbranch;
1532 immed = (l >> MIPS16OP_SH_IMM11) & MIPS16OP_MASK_IMM11;
1536 info->insn_type = dis_branch;
1541 immed = (l >> MIPS16OP_SH_IMM8) & MIPS16OP_MASK_IMM8;
1543 /* FIXME: This can be lw or la. We assume it is lw. */
1544 info->insn_type = dis_dref;
1545 info->data_size = 4;
1550 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1552 info->insn_type = dis_dref;
1553 info->data_size = 8;
1558 immed = (l >> MIPS16OP_SH_IMM5) & MIPS16OP_MASK_IMM5;
1567 if (signedp && immed >= (1 << (nbits - 1)))
1568 immed -= 1 << nbits;
1570 if ((type == '<' || type == '>' || type == '[' || type == ']')
1577 immed |= ((extend & 0x1f) << 11) | (extend & 0x7e0);
1578 else if (extbits == 15)
1579 immed |= ((extend & 0xf) << 11) | (extend & 0x7f0);
1581 immed = ((extend >> 6) & 0x1f) | (extend & 0x20);
1582 immed &= (1 << extbits) - 1;
1583 if (! extu && immed >= (1 << (extbits - 1)))
1584 immed -= 1 << extbits;
1588 (*info->fprintf_func) (info->stream, "%d", immed);
1596 baseaddr = memaddr + 2;
1598 else if (use_extend)
1599 baseaddr = memaddr - 2;
1607 /* If this instruction is in the delay slot of a jr
1608 instruction, the base address is the address of the
1609 jr instruction. If it is in the delay slot of jalr
1610 instruction, the base address is the address of the
1611 jalr instruction. This test is unreliable: we have
1612 no way of knowing whether the previous word is
1613 instruction or data. */
1614 status = (*info->read_memory_func) (memaddr - 4, buffer, 2,
1617 && (((info->endian == BFD_ENDIAN_BIG
1618 ? bfd_getb16 (buffer)
1619 : bfd_getl16 (buffer))
1620 & 0xf800) == 0x1800))
1621 baseaddr = memaddr - 4;
1624 status = (*info->read_memory_func) (memaddr - 2, buffer,
1627 && (((info->endian == BFD_ENDIAN_BIG
1628 ? bfd_getb16 (buffer)
1629 : bfd_getl16 (buffer))
1630 & 0xf81f) == 0xe800))
1631 baseaddr = memaddr - 2;
1634 info->target = (baseaddr & ~((1 << shift) - 1)) + immed;
1635 (*info->print_address_func) (info->target, info);
1643 l = ((l & 0x1f) << 23) | ((l & 0x3e0) << 13) | (extend << 2);
1644 info->target = ((memaddr + 4) & ~(bfd_vma) 0x0fffffff) | l;
1645 (*info->print_address_func) (info->target, info);
1646 info->insn_type = dis_jsr;
1647 info->branch_delay_insns = 1;
1653 int need_comma, amask, smask;
1657 l = (l >> MIPS16OP_SH_IMM6) & MIPS16OP_MASK_IMM6;
1659 amask = (l >> 3) & 7;
1661 if (amask > 0 && amask < 5)
1663 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
1665 (*info->fprintf_func) (info->stream, "-%s",
1666 mips_gpr_names[amask + 3]);
1670 smask = (l >> 1) & 3;
1673 (*info->fprintf_func) (info->stream, "%s??",
1674 need_comma ? "," : "");
1679 (*info->fprintf_func) (info->stream, "%s%s",
1680 need_comma ? "," : "",
1681 mips_gpr_names[16]);
1683 (*info->fprintf_func) (info->stream, "-%s",
1684 mips_gpr_names[smask + 15]);
1690 (*info->fprintf_func) (info->stream, "%s%s",
1691 need_comma ? "," : "",
1692 mips_gpr_names[31]);
1696 if (amask == 5 || amask == 6)
1698 (*info->fprintf_func) (info->stream, "%s$f0",
1699 need_comma ? "," : "");
1701 (*info->fprintf_func) (info->stream, "-$f1");
1708 /* MIPS16e save/restore. */
1711 int amask, args, statics;
1720 amask = (l >> 16) & 0xf;
1721 if (amask == MIPS16_ALL_ARGS)
1726 else if (amask == MIPS16_ALL_STATICS)
1734 statics = amask & 3;
1738 (*info->fprintf_func) (info->stream, "%s", mips_gpr_names[4]);
1740 (*info->fprintf_func) (info->stream, "-%s",
1741 mips_gpr_names[4 + args - 1]);
1745 framesz = (((l >> 16) & 0xf0) | (l & 0x0f)) * 8;
1746 if (framesz == 0 && !use_extend)
1749 (*info->fprintf_func) (info->stream, "%s%d",
1750 need_comma ? "," : "",
1753 if (l & 0x40) /* $ra */
1754 (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[31]);
1756 nsreg = (l >> 24) & 0x7;
1758 if (l & 0x20) /* $s0 */
1760 if (l & 0x10) /* $s1 */
1762 if (nsreg > 0) /* $s2-$s8 */
1763 smask |= ((1 << nsreg) - 1) << 2;
1765 /* Find first set static reg bit. */
1766 for (i = 0; i < 9; i++)
1768 if (smask & (1 << i))
1770 (*info->fprintf_func) (info->stream, ",%s",
1771 mips_gpr_names[i == 8 ? 30 : (16 + i)]);
1772 /* Skip over string of set bits. */
1773 for (j = i; smask & (2 << j); j++)
1776 (*info->fprintf_func) (info->stream, "-%s",
1777 mips_gpr_names[j == 8 ? 30 : (16 + j)]);
1782 /* Statics $ax - $a3. */
1784 (*info->fprintf_func) (info->stream, ",%s", mips_gpr_names[7]);
1785 else if (statics > 0)
1786 (*info->fprintf_func) (info->stream, ",%s-%s",
1787 mips_gpr_names[7 - statics + 1],
1793 /* xgettext:c-format */
1794 (*info->fprintf_func)
1796 _("# internal disassembler error, unrecognised modifier (%c)"),
1802 /* Disassemble mips16 instructions. */
1805 print_insn_mips16 (bfd_vma memaddr, struct disassemble_info *info)
1811 bfd_boolean use_extend;
1813 const struct mips_opcode *op, *opend;
1815 info->bytes_per_chunk = 2;
1816 info->display_endian = info->endian;
1817 info->insn_info_valid = 1;
1818 info->branch_delay_insns = 0;
1819 info->data_size = 0;
1820 info->insn_type = dis_nonbranch;
1824 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
1827 (*info->memory_error_func) (status, memaddr, info);
1833 if (info->endian == BFD_ENDIAN_BIG)
1834 insn = bfd_getb16 (buffer);
1836 insn = bfd_getl16 (buffer);
1838 /* Handle the extend opcode specially. */
1840 if ((insn & 0xf800) == 0xf000)
1843 extend = insn & 0x7ff;
1847 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
1850 (*info->fprintf_func) (info->stream, "extend 0x%x",
1851 (unsigned int) extend);
1852 (*info->memory_error_func) (status, memaddr, info);
1856 if (info->endian == BFD_ENDIAN_BIG)
1857 insn = bfd_getb16 (buffer);
1859 insn = bfd_getl16 (buffer);
1861 /* Check for an extend opcode followed by an extend opcode. */
1862 if ((insn & 0xf800) == 0xf000)
1864 (*info->fprintf_func) (info->stream, "extend 0x%x",
1865 (unsigned int) extend);
1866 info->insn_type = dis_noninsn;
1873 /* FIXME: Should probably use a hash table on the major opcode here. */
1875 opend = mips16_opcodes + bfd_mips16_num_opcodes;
1876 for (op = mips16_opcodes; op < opend; op++)
1878 if (op->pinfo != INSN_MACRO
1879 && !(no_aliases && (op->pinfo2 & INSN2_ALIAS))
1880 && (insn & op->mask) == op->match)
1884 if (strchr (op->args, 'a') != NULL)
1888 (*info->fprintf_func) (info->stream, "extend 0x%x",
1889 (unsigned int) extend);
1890 info->insn_type = dis_noninsn;
1898 status = (*info->read_memory_func) (memaddr, buffer, 2,
1903 if (info->endian == BFD_ENDIAN_BIG)
1904 extend = bfd_getb16 (buffer);
1906 extend = bfd_getl16 (buffer);
1911 (*info->fprintf_func) (info->stream, "%s", op->name);
1912 if (op->args[0] != '\0')
1913 (*info->fprintf_func) (info->stream, "\t");
1915 for (s = op->args; *s != '\0'; s++)
1919 && (((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)
1920 == ((insn >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY)))
1922 /* Skip the register and the comma. */
1928 && (((insn >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ)
1929 == ((insn >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX)))
1931 /* Skip the register and the comma. */
1935 print_mips16_insn_arg (*s, op, insn, use_extend, extend, memaddr,
1939 if ((op->pinfo & INSN_UNCOND_BRANCH_DELAY) != 0)
1941 info->branch_delay_insns = 1;
1942 if (info->insn_type != dis_jsr)
1943 info->insn_type = dis_branch;
1951 (*info->fprintf_func) (info->stream, "0x%x", extend | 0xf000);
1952 (*info->fprintf_func) (info->stream, "0x%x", insn);
1953 info->insn_type = dis_noninsn;
1958 /* In an environment where we do not know the symbol type of the
1959 instruction we are forced to assume that the low order bit of the
1960 instructions' address may mark it as a mips16 instruction. If we
1961 are single stepping, or the pc is within the disassembled function,
1962 this works. Otherwise, we need a clue. Sometimes. */
1965 _print_insn_mips (bfd_vma memaddr,
1966 struct disassemble_info *info,
1967 enum bfd_endian endianness)
1969 bfd_byte buffer[INSNLEN];
1972 set_default_mips_dis_options (info);
1973 parse_mips_dis_options (info->disassembler_options);
1976 /* FIXME: If odd address, this is CLEARLY a mips 16 instruction. */
1977 /* Only a few tools will work this way. */
1979 return print_insn_mips16 (memaddr, info);
1982 #if SYMTAB_AVAILABLE
1983 if (info->mach == bfd_mach_mips16
1984 || (info->flavour == bfd_target_elf_flavour
1985 && info->symbols != NULL
1986 && ((*(elf_symbol_type **) info->symbols)->internal_elf_sym.st_other
1988 return print_insn_mips16 (memaddr, info);
1991 status = (*info->read_memory_func) (memaddr, buffer, INSNLEN, info);
1996 if (endianness == BFD_ENDIAN_BIG)
1997 insn = (unsigned long) bfd_getb32 (buffer);
1999 insn = (unsigned long) bfd_getl32 (buffer);
2001 return print_insn_mips (memaddr, insn, info);
2005 (*info->memory_error_func) (status, memaddr, info);
2011 print_insn_big_mips (bfd_vma memaddr, struct disassemble_info *info)
2013 return _print_insn_mips (memaddr, info, BFD_ENDIAN_BIG);
2017 print_insn_little_mips (bfd_vma memaddr, struct disassemble_info *info)
2019 return _print_insn_mips (memaddr, info, BFD_ENDIAN_LITTLE);
2023 print_mips_disassembler_options (FILE *stream)
2027 fprintf (stream, _("\n\
2028 The following MIPS specific disassembler options are supported for use\n\
2029 with the -M switch (multiple options should be separated by commas):\n"));
2031 fprintf (stream, _("\n\
2032 gpr-names=ABI Print GPR names according to specified ABI.\n\
2033 Default: based on binary being disassembled.\n"));
2035 fprintf (stream, _("\n\
2036 fpr-names=ABI Print FPR names according to specified ABI.\n\
2037 Default: numeric.\n"));
2039 fprintf (stream, _("\n\
2040 cp0-names=ARCH Print CP0 register names according to\n\
2041 specified architecture.\n\
2042 Default: based on binary being disassembled.\n"));
2044 fprintf (stream, _("\n\
2045 hwr-names=ARCH Print HWR names according to specified \n\
2047 Default: based on binary being disassembled.\n"));
2049 fprintf (stream, _("\n\
2050 reg-names=ABI Print GPR and FPR names according to\n\
2051 specified ABI.\n"));
2053 fprintf (stream, _("\n\
2054 reg-names=ARCH Print CP0 register and HWR names according to\n\
2055 specified architecture.\n"));
2057 fprintf (stream, _("\n\
2058 For the options above, the following values are supported for \"ABI\":\n\
2060 for (i = 0; i < ARRAY_SIZE (mips_abi_choices); i++)
2061 fprintf (stream, " %s", mips_abi_choices[i].name);
2062 fprintf (stream, _("\n"));
2064 fprintf (stream, _("\n\
2065 For the options above, The following values are supported for \"ARCH\":\n\
2067 for (i = 0; i < ARRAY_SIZE (mips_arch_choices); i++)
2068 if (*mips_arch_choices[i].name != '\0')
2069 fprintf (stream, " %s", mips_arch_choices[i].name);
2070 fprintf (stream, _("\n"));
2072 fprintf (stream, _("\n"));