Commit | Line | Data |
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c906108c | 1 | /* Intel 386 target-dependent stuff. |
349c5d5f | 2 | |
6aba47ca | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4c38e0a4 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
7b6bb8da | 5 | 2010, 2011 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
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. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
1903f0e6 | 23 | #include "opcode/i386.h" |
acd5c798 MK |
24 | #include "arch-utils.h" |
25 | #include "command.h" | |
26 | #include "dummy-frame.h" | |
6405b0a6 | 27 | #include "dwarf2-frame.h" |
acd5c798 | 28 | #include "doublest.h" |
c906108c | 29 | #include "frame.h" |
acd5c798 MK |
30 | #include "frame-base.h" |
31 | #include "frame-unwind.h" | |
c906108c | 32 | #include "inferior.h" |
acd5c798 | 33 | #include "gdbcmd.h" |
c906108c | 34 | #include "gdbcore.h" |
e6bb342a | 35 | #include "gdbtypes.h" |
dfe01d39 | 36 | #include "objfiles.h" |
acd5c798 MK |
37 | #include "osabi.h" |
38 | #include "regcache.h" | |
39 | #include "reggroups.h" | |
473f17b0 | 40 | #include "regset.h" |
c0d1d883 | 41 | #include "symfile.h" |
c906108c | 42 | #include "symtab.h" |
acd5c798 | 43 | #include "target.h" |
fd0407d6 | 44 | #include "value.h" |
a89aa300 | 45 | #include "dis-asm.h" |
7a697b8d | 46 | #include "disasm.h" |
c8d5aac9 | 47 | #include "remote.h" |
8fbca658 | 48 | #include "exceptions.h" |
3d261580 | 49 | #include "gdb_assert.h" |
acd5c798 | 50 | #include "gdb_string.h" |
3d261580 | 51 | |
d2a7c97a | 52 | #include "i386-tdep.h" |
61113f8b | 53 | #include "i387-tdep.h" |
c131fcee | 54 | #include "i386-xstate.h" |
d2a7c97a | 55 | |
7ad10968 HZ |
56 | #include "record.h" |
57 | #include <stdint.h> | |
58 | ||
90884b2b | 59 | #include "features/i386/i386.c" |
c131fcee | 60 | #include "features/i386/i386-avx.c" |
3a13a53b | 61 | #include "features/i386/i386-mmx.c" |
90884b2b | 62 | |
c4fc7f1b | 63 | /* Register names. */ |
c40e1eab | 64 | |
90884b2b | 65 | static const char *i386_register_names[] = |
fc633446 MK |
66 | { |
67 | "eax", "ecx", "edx", "ebx", | |
68 | "esp", "ebp", "esi", "edi", | |
69 | "eip", "eflags", "cs", "ss", | |
70 | "ds", "es", "fs", "gs", | |
71 | "st0", "st1", "st2", "st3", | |
72 | "st4", "st5", "st6", "st7", | |
73 | "fctrl", "fstat", "ftag", "fiseg", | |
74 | "fioff", "foseg", "fooff", "fop", | |
75 | "xmm0", "xmm1", "xmm2", "xmm3", | |
76 | "xmm4", "xmm5", "xmm6", "xmm7", | |
77 | "mxcsr" | |
78 | }; | |
79 | ||
c131fcee L |
80 | static const char *i386_ymm_names[] = |
81 | { | |
82 | "ymm0", "ymm1", "ymm2", "ymm3", | |
83 | "ymm4", "ymm5", "ymm6", "ymm7", | |
84 | }; | |
85 | ||
86 | static const char *i386_ymmh_names[] = | |
87 | { | |
88 | "ymm0h", "ymm1h", "ymm2h", "ymm3h", | |
89 | "ymm4h", "ymm5h", "ymm6h", "ymm7h", | |
90 | }; | |
91 | ||
c4fc7f1b | 92 | /* Register names for MMX pseudo-registers. */ |
28fc6740 | 93 | |
90884b2b | 94 | static const char *i386_mmx_names[] = |
28fc6740 AC |
95 | { |
96 | "mm0", "mm1", "mm2", "mm3", | |
97 | "mm4", "mm5", "mm6", "mm7" | |
98 | }; | |
c40e1eab | 99 | |
1ba53b71 L |
100 | /* Register names for byte pseudo-registers. */ |
101 | ||
102 | static const char *i386_byte_names[] = | |
103 | { | |
104 | "al", "cl", "dl", "bl", | |
105 | "ah", "ch", "dh", "bh" | |
106 | }; | |
107 | ||
108 | /* Register names for word pseudo-registers. */ | |
109 | ||
110 | static const char *i386_word_names[] = | |
111 | { | |
112 | "ax", "cx", "dx", "bx", | |
9cad29ac | 113 | "", "bp", "si", "di" |
1ba53b71 L |
114 | }; |
115 | ||
116 | /* MMX register? */ | |
c40e1eab | 117 | |
28fc6740 | 118 | static int |
5716833c | 119 | i386_mmx_regnum_p (struct gdbarch *gdbarch, int regnum) |
28fc6740 | 120 | { |
1ba53b71 L |
121 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
122 | int mm0_regnum = tdep->mm0_regnum; | |
5716833c MK |
123 | |
124 | if (mm0_regnum < 0) | |
125 | return 0; | |
126 | ||
1ba53b71 L |
127 | regnum -= mm0_regnum; |
128 | return regnum >= 0 && regnum < tdep->num_mmx_regs; | |
129 | } | |
130 | ||
131 | /* Byte register? */ | |
132 | ||
133 | int | |
134 | i386_byte_regnum_p (struct gdbarch *gdbarch, int regnum) | |
135 | { | |
136 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
137 | ||
138 | regnum -= tdep->al_regnum; | |
139 | return regnum >= 0 && regnum < tdep->num_byte_regs; | |
140 | } | |
141 | ||
142 | /* Word register? */ | |
143 | ||
144 | int | |
145 | i386_word_regnum_p (struct gdbarch *gdbarch, int regnum) | |
146 | { | |
147 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
148 | ||
149 | regnum -= tdep->ax_regnum; | |
150 | return regnum >= 0 && regnum < tdep->num_word_regs; | |
151 | } | |
152 | ||
153 | /* Dword register? */ | |
154 | ||
155 | int | |
156 | i386_dword_regnum_p (struct gdbarch *gdbarch, int regnum) | |
157 | { | |
158 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
159 | int eax_regnum = tdep->eax_regnum; | |
160 | ||
161 | if (eax_regnum < 0) | |
162 | return 0; | |
163 | ||
164 | regnum -= eax_regnum; | |
165 | return regnum >= 0 && regnum < tdep->num_dword_regs; | |
28fc6740 AC |
166 | } |
167 | ||
9191d390 | 168 | static int |
c131fcee L |
169 | i386_ymmh_regnum_p (struct gdbarch *gdbarch, int regnum) |
170 | { | |
171 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
172 | int ymm0h_regnum = tdep->ymm0h_regnum; | |
173 | ||
174 | if (ymm0h_regnum < 0) | |
175 | return 0; | |
176 | ||
177 | regnum -= ymm0h_regnum; | |
178 | return regnum >= 0 && regnum < tdep->num_ymm_regs; | |
179 | } | |
180 | ||
181 | /* AVX register? */ | |
182 | ||
183 | int | |
184 | i386_ymm_regnum_p (struct gdbarch *gdbarch, int regnum) | |
185 | { | |
186 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
187 | int ymm0_regnum = tdep->ymm0_regnum; | |
188 | ||
189 | if (ymm0_regnum < 0) | |
190 | return 0; | |
191 | ||
192 | regnum -= ymm0_regnum; | |
193 | return regnum >= 0 && regnum < tdep->num_ymm_regs; | |
194 | } | |
195 | ||
5716833c | 196 | /* SSE register? */ |
23a34459 | 197 | |
c131fcee L |
198 | int |
199 | i386_xmm_regnum_p (struct gdbarch *gdbarch, int regnum) | |
23a34459 | 200 | { |
5716833c | 201 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
c131fcee | 202 | int num_xmm_regs = I387_NUM_XMM_REGS (tdep); |
5716833c | 203 | |
c131fcee | 204 | if (num_xmm_regs == 0) |
5716833c MK |
205 | return 0; |
206 | ||
c131fcee L |
207 | regnum -= I387_XMM0_REGNUM (tdep); |
208 | return regnum >= 0 && regnum < num_xmm_regs; | |
23a34459 AC |
209 | } |
210 | ||
5716833c MK |
211 | static int |
212 | i386_mxcsr_regnum_p (struct gdbarch *gdbarch, int regnum) | |
23a34459 | 213 | { |
5716833c MK |
214 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
215 | ||
20a6ec49 | 216 | if (I387_NUM_XMM_REGS (tdep) == 0) |
5716833c MK |
217 | return 0; |
218 | ||
20a6ec49 | 219 | return (regnum == I387_MXCSR_REGNUM (tdep)); |
23a34459 AC |
220 | } |
221 | ||
5716833c | 222 | /* FP register? */ |
23a34459 AC |
223 | |
224 | int | |
20a6ec49 | 225 | i386_fp_regnum_p (struct gdbarch *gdbarch, int regnum) |
23a34459 | 226 | { |
20a6ec49 MD |
227 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
228 | ||
229 | if (I387_ST0_REGNUM (tdep) < 0) | |
5716833c MK |
230 | return 0; |
231 | ||
20a6ec49 MD |
232 | return (I387_ST0_REGNUM (tdep) <= regnum |
233 | && regnum < I387_FCTRL_REGNUM (tdep)); | |
23a34459 AC |
234 | } |
235 | ||
236 | int | |
20a6ec49 | 237 | i386_fpc_regnum_p (struct gdbarch *gdbarch, int regnum) |
23a34459 | 238 | { |
20a6ec49 MD |
239 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
240 | ||
241 | if (I387_ST0_REGNUM (tdep) < 0) | |
5716833c MK |
242 | return 0; |
243 | ||
20a6ec49 MD |
244 | return (I387_FCTRL_REGNUM (tdep) <= regnum |
245 | && regnum < I387_XMM0_REGNUM (tdep)); | |
23a34459 AC |
246 | } |
247 | ||
c131fcee L |
248 | /* Return the name of register REGNUM, or the empty string if it is |
249 | an anonymous register. */ | |
250 | ||
251 | static const char * | |
252 | i386_register_name (struct gdbarch *gdbarch, int regnum) | |
253 | { | |
254 | /* Hide the upper YMM registers. */ | |
255 | if (i386_ymmh_regnum_p (gdbarch, regnum)) | |
256 | return ""; | |
257 | ||
258 | return tdesc_register_name (gdbarch, regnum); | |
259 | } | |
260 | ||
30b0e2d8 | 261 | /* Return the name of register REGNUM. */ |
fc633446 | 262 | |
1ba53b71 | 263 | const char * |
90884b2b | 264 | i386_pseudo_register_name (struct gdbarch *gdbarch, int regnum) |
fc633446 | 265 | { |
1ba53b71 L |
266 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
267 | if (i386_mmx_regnum_p (gdbarch, regnum)) | |
268 | return i386_mmx_names[regnum - I387_MM0_REGNUM (tdep)]; | |
c131fcee L |
269 | else if (i386_ymm_regnum_p (gdbarch, regnum)) |
270 | return i386_ymm_names[regnum - tdep->ymm0_regnum]; | |
1ba53b71 L |
271 | else if (i386_byte_regnum_p (gdbarch, regnum)) |
272 | return i386_byte_names[regnum - tdep->al_regnum]; | |
273 | else if (i386_word_regnum_p (gdbarch, regnum)) | |
274 | return i386_word_names[regnum - tdep->ax_regnum]; | |
275 | ||
276 | internal_error (__FILE__, __LINE__, _("invalid regnum")); | |
fc633446 MK |
277 | } |
278 | ||
c4fc7f1b | 279 | /* Convert a dbx register number REG to the appropriate register |
85540d8c MK |
280 | number used by GDB. */ |
281 | ||
8201327c | 282 | static int |
d3f73121 | 283 | i386_dbx_reg_to_regnum (struct gdbarch *gdbarch, int reg) |
85540d8c | 284 | { |
20a6ec49 MD |
285 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
286 | ||
c4fc7f1b MK |
287 | /* This implements what GCC calls the "default" register map |
288 | (dbx_register_map[]). */ | |
289 | ||
85540d8c MK |
290 | if (reg >= 0 && reg <= 7) |
291 | { | |
9872ad24 JB |
292 | /* General-purpose registers. The debug info calls %ebp |
293 | register 4, and %esp register 5. */ | |
294 | if (reg == 4) | |
295 | return 5; | |
296 | else if (reg == 5) | |
297 | return 4; | |
298 | else return reg; | |
85540d8c MK |
299 | } |
300 | else if (reg >= 12 && reg <= 19) | |
301 | { | |
302 | /* Floating-point registers. */ | |
20a6ec49 | 303 | return reg - 12 + I387_ST0_REGNUM (tdep); |
85540d8c MK |
304 | } |
305 | else if (reg >= 21 && reg <= 28) | |
306 | { | |
307 | /* SSE registers. */ | |
c131fcee L |
308 | int ymm0_regnum = tdep->ymm0_regnum; |
309 | ||
310 | if (ymm0_regnum >= 0 | |
311 | && i386_xmm_regnum_p (gdbarch, reg)) | |
312 | return reg - 21 + ymm0_regnum; | |
313 | else | |
314 | return reg - 21 + I387_XMM0_REGNUM (tdep); | |
85540d8c MK |
315 | } |
316 | else if (reg >= 29 && reg <= 36) | |
317 | { | |
318 | /* MMX registers. */ | |
20a6ec49 | 319 | return reg - 29 + I387_MM0_REGNUM (tdep); |
85540d8c MK |
320 | } |
321 | ||
322 | /* This will hopefully provoke a warning. */ | |
d3f73121 | 323 | return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); |
85540d8c MK |
324 | } |
325 | ||
c4fc7f1b MK |
326 | /* Convert SVR4 register number REG to the appropriate register number |
327 | used by GDB. */ | |
85540d8c | 328 | |
8201327c | 329 | static int |
d3f73121 | 330 | i386_svr4_reg_to_regnum (struct gdbarch *gdbarch, int reg) |
85540d8c | 331 | { |
20a6ec49 MD |
332 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
333 | ||
c4fc7f1b MK |
334 | /* This implements the GCC register map that tries to be compatible |
335 | with the SVR4 C compiler for DWARF (svr4_dbx_register_map[]). */ | |
336 | ||
337 | /* The SVR4 register numbering includes %eip and %eflags, and | |
85540d8c MK |
338 | numbers the floating point registers differently. */ |
339 | if (reg >= 0 && reg <= 9) | |
340 | { | |
acd5c798 | 341 | /* General-purpose registers. */ |
85540d8c MK |
342 | return reg; |
343 | } | |
344 | else if (reg >= 11 && reg <= 18) | |
345 | { | |
346 | /* Floating-point registers. */ | |
20a6ec49 | 347 | return reg - 11 + I387_ST0_REGNUM (tdep); |
85540d8c | 348 | } |
c6f4c129 | 349 | else if (reg >= 21 && reg <= 36) |
85540d8c | 350 | { |
c4fc7f1b | 351 | /* The SSE and MMX registers have the same numbers as with dbx. */ |
d3f73121 | 352 | return i386_dbx_reg_to_regnum (gdbarch, reg); |
85540d8c MK |
353 | } |
354 | ||
c6f4c129 JB |
355 | switch (reg) |
356 | { | |
20a6ec49 MD |
357 | case 37: return I387_FCTRL_REGNUM (tdep); |
358 | case 38: return I387_FSTAT_REGNUM (tdep); | |
359 | case 39: return I387_MXCSR_REGNUM (tdep); | |
c6f4c129 JB |
360 | case 40: return I386_ES_REGNUM; |
361 | case 41: return I386_CS_REGNUM; | |
362 | case 42: return I386_SS_REGNUM; | |
363 | case 43: return I386_DS_REGNUM; | |
364 | case 44: return I386_FS_REGNUM; | |
365 | case 45: return I386_GS_REGNUM; | |
366 | } | |
367 | ||
85540d8c | 368 | /* This will hopefully provoke a warning. */ |
d3f73121 | 369 | return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); |
85540d8c | 370 | } |
5716833c | 371 | |
fc338970 | 372 | \f |
917317f4 | 373 | |
fc338970 MK |
374 | /* This is the variable that is set with "set disassembly-flavor", and |
375 | its legitimate values. */ | |
53904c9e AC |
376 | static const char att_flavor[] = "att"; |
377 | static const char intel_flavor[] = "intel"; | |
378 | static const char *valid_flavors[] = | |
c5aa993b | 379 | { |
c906108c SS |
380 | att_flavor, |
381 | intel_flavor, | |
382 | NULL | |
383 | }; | |
53904c9e | 384 | static const char *disassembly_flavor = att_flavor; |
acd5c798 | 385 | \f |
c906108c | 386 | |
acd5c798 MK |
387 | /* Use the program counter to determine the contents and size of a |
388 | breakpoint instruction. Return a pointer to a string of bytes that | |
389 | encode a breakpoint instruction, store the length of the string in | |
390 | *LEN and optionally adjust *PC to point to the correct memory | |
391 | location for inserting the breakpoint. | |
c906108c | 392 | |
acd5c798 MK |
393 | On the i386 we have a single breakpoint that fits in a single byte |
394 | and can be inserted anywhere. | |
c906108c | 395 | |
acd5c798 | 396 | This function is 64-bit safe. */ |
63c0089f MK |
397 | |
398 | static const gdb_byte * | |
67d57894 | 399 | i386_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pc, int *len) |
c906108c | 400 | { |
63c0089f MK |
401 | static gdb_byte break_insn[] = { 0xcc }; /* int 3 */ |
402 | ||
acd5c798 MK |
403 | *len = sizeof (break_insn); |
404 | return break_insn; | |
c906108c | 405 | } |
237fc4c9 PA |
406 | \f |
407 | /* Displaced instruction handling. */ | |
408 | ||
1903f0e6 DE |
409 | /* Skip the legacy instruction prefixes in INSN. |
410 | Not all prefixes are valid for any particular insn | |
411 | but we needn't care, the insn will fault if it's invalid. | |
412 | The result is a pointer to the first opcode byte, | |
413 | or NULL if we run off the end of the buffer. */ | |
414 | ||
415 | static gdb_byte * | |
416 | i386_skip_prefixes (gdb_byte *insn, size_t max_len) | |
417 | { | |
418 | gdb_byte *end = insn + max_len; | |
419 | ||
420 | while (insn < end) | |
421 | { | |
422 | switch (*insn) | |
423 | { | |
424 | case DATA_PREFIX_OPCODE: | |
425 | case ADDR_PREFIX_OPCODE: | |
426 | case CS_PREFIX_OPCODE: | |
427 | case DS_PREFIX_OPCODE: | |
428 | case ES_PREFIX_OPCODE: | |
429 | case FS_PREFIX_OPCODE: | |
430 | case GS_PREFIX_OPCODE: | |
431 | case SS_PREFIX_OPCODE: | |
432 | case LOCK_PREFIX_OPCODE: | |
433 | case REPE_PREFIX_OPCODE: | |
434 | case REPNE_PREFIX_OPCODE: | |
435 | ++insn; | |
436 | continue; | |
437 | default: | |
438 | return insn; | |
439 | } | |
440 | } | |
441 | ||
442 | return NULL; | |
443 | } | |
237fc4c9 PA |
444 | |
445 | static int | |
1903f0e6 | 446 | i386_absolute_jmp_p (const gdb_byte *insn) |
237fc4c9 | 447 | { |
1777feb0 | 448 | /* jmp far (absolute address in operand). */ |
237fc4c9 PA |
449 | if (insn[0] == 0xea) |
450 | return 1; | |
451 | ||
452 | if (insn[0] == 0xff) | |
453 | { | |
1777feb0 | 454 | /* jump near, absolute indirect (/4). */ |
237fc4c9 PA |
455 | if ((insn[1] & 0x38) == 0x20) |
456 | return 1; | |
457 | ||
1777feb0 | 458 | /* jump far, absolute indirect (/5). */ |
237fc4c9 PA |
459 | if ((insn[1] & 0x38) == 0x28) |
460 | return 1; | |
461 | } | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
466 | static int | |
1903f0e6 | 467 | i386_absolute_call_p (const gdb_byte *insn) |
237fc4c9 | 468 | { |
1777feb0 | 469 | /* call far, absolute. */ |
237fc4c9 PA |
470 | if (insn[0] == 0x9a) |
471 | return 1; | |
472 | ||
473 | if (insn[0] == 0xff) | |
474 | { | |
1777feb0 | 475 | /* Call near, absolute indirect (/2). */ |
237fc4c9 PA |
476 | if ((insn[1] & 0x38) == 0x10) |
477 | return 1; | |
478 | ||
1777feb0 | 479 | /* Call far, absolute indirect (/3). */ |
237fc4c9 PA |
480 | if ((insn[1] & 0x38) == 0x18) |
481 | return 1; | |
482 | } | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | static int | |
1903f0e6 | 488 | i386_ret_p (const gdb_byte *insn) |
237fc4c9 PA |
489 | { |
490 | switch (insn[0]) | |
491 | { | |
1777feb0 | 492 | case 0xc2: /* ret near, pop N bytes. */ |
237fc4c9 | 493 | case 0xc3: /* ret near */ |
1777feb0 | 494 | case 0xca: /* ret far, pop N bytes. */ |
237fc4c9 PA |
495 | case 0xcb: /* ret far */ |
496 | case 0xcf: /* iret */ | |
497 | return 1; | |
498 | ||
499 | default: | |
500 | return 0; | |
501 | } | |
502 | } | |
503 | ||
504 | static int | |
1903f0e6 | 505 | i386_call_p (const gdb_byte *insn) |
237fc4c9 PA |
506 | { |
507 | if (i386_absolute_call_p (insn)) | |
508 | return 1; | |
509 | ||
1777feb0 | 510 | /* call near, relative. */ |
237fc4c9 PA |
511 | if (insn[0] == 0xe8) |
512 | return 1; | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
237fc4c9 PA |
517 | /* Return non-zero if INSN is a system call, and set *LENGTHP to its |
518 | length in bytes. Otherwise, return zero. */ | |
1903f0e6 | 519 | |
237fc4c9 | 520 | static int |
b55078be | 521 | i386_syscall_p (const gdb_byte *insn, int *lengthp) |
237fc4c9 PA |
522 | { |
523 | if (insn[0] == 0xcd) | |
524 | { | |
525 | *lengthp = 2; | |
526 | return 1; | |
527 | } | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
b55078be DE |
532 | /* Some kernels may run one past a syscall insn, so we have to cope. |
533 | Otherwise this is just simple_displaced_step_copy_insn. */ | |
534 | ||
535 | struct displaced_step_closure * | |
536 | i386_displaced_step_copy_insn (struct gdbarch *gdbarch, | |
537 | CORE_ADDR from, CORE_ADDR to, | |
538 | struct regcache *regs) | |
539 | { | |
540 | size_t len = gdbarch_max_insn_length (gdbarch); | |
541 | gdb_byte *buf = xmalloc (len); | |
542 | ||
543 | read_memory (from, buf, len); | |
544 | ||
545 | /* GDB may get control back after the insn after the syscall. | |
546 | Presumably this is a kernel bug. | |
547 | If this is a syscall, make sure there's a nop afterwards. */ | |
548 | { | |
549 | int syscall_length; | |
550 | gdb_byte *insn; | |
551 | ||
552 | insn = i386_skip_prefixes (buf, len); | |
553 | if (insn != NULL && i386_syscall_p (insn, &syscall_length)) | |
554 | insn[syscall_length] = NOP_OPCODE; | |
555 | } | |
556 | ||
557 | write_memory (to, buf, len); | |
558 | ||
559 | if (debug_displaced) | |
560 | { | |
561 | fprintf_unfiltered (gdb_stdlog, "displaced: copy %s->%s: ", | |
562 | paddress (gdbarch, from), paddress (gdbarch, to)); | |
563 | displaced_step_dump_bytes (gdb_stdlog, buf, len); | |
564 | } | |
565 | ||
566 | return (struct displaced_step_closure *) buf; | |
567 | } | |
568 | ||
237fc4c9 PA |
569 | /* Fix up the state of registers and memory after having single-stepped |
570 | a displaced instruction. */ | |
1903f0e6 | 571 | |
237fc4c9 PA |
572 | void |
573 | i386_displaced_step_fixup (struct gdbarch *gdbarch, | |
574 | struct displaced_step_closure *closure, | |
575 | CORE_ADDR from, CORE_ADDR to, | |
576 | struct regcache *regs) | |
577 | { | |
e17a4113 UW |
578 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
579 | ||
237fc4c9 PA |
580 | /* The offset we applied to the instruction's address. |
581 | This could well be negative (when viewed as a signed 32-bit | |
582 | value), but ULONGEST won't reflect that, so take care when | |
583 | applying it. */ | |
584 | ULONGEST insn_offset = to - from; | |
585 | ||
586 | /* Since we use simple_displaced_step_copy_insn, our closure is a | |
587 | copy of the instruction. */ | |
588 | gdb_byte *insn = (gdb_byte *) closure; | |
1903f0e6 DE |
589 | /* The start of the insn, needed in case we see some prefixes. */ |
590 | gdb_byte *insn_start = insn; | |
237fc4c9 PA |
591 | |
592 | if (debug_displaced) | |
593 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 | 594 | "displaced: fixup (%s, %s), " |
237fc4c9 | 595 | "insn = 0x%02x 0x%02x ...\n", |
5af949e3 UW |
596 | paddress (gdbarch, from), paddress (gdbarch, to), |
597 | insn[0], insn[1]); | |
237fc4c9 PA |
598 | |
599 | /* The list of issues to contend with here is taken from | |
600 | resume_execution in arch/i386/kernel/kprobes.c, Linux 2.6.20. | |
601 | Yay for Free Software! */ | |
602 | ||
603 | /* Relocate the %eip, if necessary. */ | |
604 | ||
1903f0e6 DE |
605 | /* The instruction recognizers we use assume any leading prefixes |
606 | have been skipped. */ | |
607 | { | |
608 | /* This is the size of the buffer in closure. */ | |
609 | size_t max_insn_len = gdbarch_max_insn_length (gdbarch); | |
610 | gdb_byte *opcode = i386_skip_prefixes (insn, max_insn_len); | |
611 | /* If there are too many prefixes, just ignore the insn. | |
612 | It will fault when run. */ | |
613 | if (opcode != NULL) | |
614 | insn = opcode; | |
615 | } | |
616 | ||
237fc4c9 PA |
617 | /* Except in the case of absolute or indirect jump or call |
618 | instructions, or a return instruction, the new eip is relative to | |
619 | the displaced instruction; make it relative. Well, signal | |
620 | handler returns don't need relocation either, but we use the | |
621 | value of %eip to recognize those; see below. */ | |
622 | if (! i386_absolute_jmp_p (insn) | |
623 | && ! i386_absolute_call_p (insn) | |
624 | && ! i386_ret_p (insn)) | |
625 | { | |
626 | ULONGEST orig_eip; | |
b55078be | 627 | int insn_len; |
237fc4c9 PA |
628 | |
629 | regcache_cooked_read_unsigned (regs, I386_EIP_REGNUM, &orig_eip); | |
630 | ||
631 | /* A signal trampoline system call changes the %eip, resuming | |
632 | execution of the main program after the signal handler has | |
633 | returned. That makes them like 'return' instructions; we | |
634 | shouldn't relocate %eip. | |
635 | ||
636 | But most system calls don't, and we do need to relocate %eip. | |
637 | ||
638 | Our heuristic for distinguishing these cases: if stepping | |
639 | over the system call instruction left control directly after | |
640 | the instruction, the we relocate --- control almost certainly | |
641 | doesn't belong in the displaced copy. Otherwise, we assume | |
642 | the instruction has put control where it belongs, and leave | |
643 | it unrelocated. Goodness help us if there are PC-relative | |
644 | system calls. */ | |
645 | if (i386_syscall_p (insn, &insn_len) | |
b55078be DE |
646 | && orig_eip != to + (insn - insn_start) + insn_len |
647 | /* GDB can get control back after the insn after the syscall. | |
648 | Presumably this is a kernel bug. | |
649 | i386_displaced_step_copy_insn ensures its a nop, | |
650 | we add one to the length for it. */ | |
651 | && orig_eip != to + (insn - insn_start) + insn_len + 1) | |
237fc4c9 PA |
652 | { |
653 | if (debug_displaced) | |
654 | fprintf_unfiltered (gdb_stdlog, | |
655 | "displaced: syscall changed %%eip; " | |
656 | "not relocating\n"); | |
657 | } | |
658 | else | |
659 | { | |
660 | ULONGEST eip = (orig_eip - insn_offset) & 0xffffffffUL; | |
661 | ||
1903f0e6 DE |
662 | /* If we just stepped over a breakpoint insn, we don't backup |
663 | the pc on purpose; this is to match behaviour without | |
664 | stepping. */ | |
237fc4c9 PA |
665 | |
666 | regcache_cooked_write_unsigned (regs, I386_EIP_REGNUM, eip); | |
667 | ||
668 | if (debug_displaced) | |
669 | fprintf_unfiltered (gdb_stdlog, | |
670 | "displaced: " | |
5af949e3 UW |
671 | "relocated %%eip from %s to %s\n", |
672 | paddress (gdbarch, orig_eip), | |
673 | paddress (gdbarch, eip)); | |
237fc4c9 PA |
674 | } |
675 | } | |
676 | ||
677 | /* If the instruction was PUSHFL, then the TF bit will be set in the | |
678 | pushed value, and should be cleared. We'll leave this for later, | |
679 | since GDB already messes up the TF flag when stepping over a | |
680 | pushfl. */ | |
681 | ||
682 | /* If the instruction was a call, the return address now atop the | |
683 | stack is the address following the copied instruction. We need | |
684 | to make it the address following the original instruction. */ | |
685 | if (i386_call_p (insn)) | |
686 | { | |
687 | ULONGEST esp; | |
688 | ULONGEST retaddr; | |
689 | const ULONGEST retaddr_len = 4; | |
690 | ||
691 | regcache_cooked_read_unsigned (regs, I386_ESP_REGNUM, &esp); | |
b75f0b83 | 692 | retaddr = read_memory_unsigned_integer (esp, retaddr_len, byte_order); |
237fc4c9 | 693 | retaddr = (retaddr - insn_offset) & 0xffffffffUL; |
e17a4113 | 694 | write_memory_unsigned_integer (esp, retaddr_len, byte_order, retaddr); |
237fc4c9 PA |
695 | |
696 | if (debug_displaced) | |
697 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 UW |
698 | "displaced: relocated return addr at %s to %s\n", |
699 | paddress (gdbarch, esp), | |
700 | paddress (gdbarch, retaddr)); | |
237fc4c9 PA |
701 | } |
702 | } | |
dde08ee1 PA |
703 | |
704 | static void | |
705 | append_insns (CORE_ADDR *to, ULONGEST len, const gdb_byte *buf) | |
706 | { | |
707 | target_write_memory (*to, buf, len); | |
708 | *to += len; | |
709 | } | |
710 | ||
711 | static void | |
712 | i386_relocate_instruction (struct gdbarch *gdbarch, | |
713 | CORE_ADDR *to, CORE_ADDR oldloc) | |
714 | { | |
715 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
716 | gdb_byte buf[I386_MAX_INSN_LEN]; | |
717 | int offset = 0, rel32, newrel; | |
718 | int insn_length; | |
719 | gdb_byte *insn = buf; | |
720 | ||
721 | read_memory (oldloc, buf, I386_MAX_INSN_LEN); | |
722 | ||
723 | insn_length = gdb_buffered_insn_length (gdbarch, insn, | |
724 | I386_MAX_INSN_LEN, oldloc); | |
725 | ||
726 | /* Get past the prefixes. */ | |
727 | insn = i386_skip_prefixes (insn, I386_MAX_INSN_LEN); | |
728 | ||
729 | /* Adjust calls with 32-bit relative addresses as push/jump, with | |
730 | the address pushed being the location where the original call in | |
731 | the user program would return to. */ | |
732 | if (insn[0] == 0xe8) | |
733 | { | |
734 | gdb_byte push_buf[16]; | |
735 | unsigned int ret_addr; | |
736 | ||
737 | /* Where "ret" in the original code will return to. */ | |
738 | ret_addr = oldloc + insn_length; | |
1777feb0 | 739 | push_buf[0] = 0x68; /* pushq $... */ |
dde08ee1 PA |
740 | memcpy (&push_buf[1], &ret_addr, 4); |
741 | /* Push the push. */ | |
742 | append_insns (to, 5, push_buf); | |
743 | ||
744 | /* Convert the relative call to a relative jump. */ | |
745 | insn[0] = 0xe9; | |
746 | ||
747 | /* Adjust the destination offset. */ | |
748 | rel32 = extract_signed_integer (insn + 1, 4, byte_order); | |
749 | newrel = (oldloc - *to) + rel32; | |
f4a1794a KY |
750 | store_signed_integer (insn + 1, 4, byte_order, newrel); |
751 | ||
752 | if (debug_displaced) | |
753 | fprintf_unfiltered (gdb_stdlog, | |
754 | "Adjusted insn rel32=%s at %s to" | |
755 | " rel32=%s at %s\n", | |
756 | hex_string (rel32), paddress (gdbarch, oldloc), | |
757 | hex_string (newrel), paddress (gdbarch, *to)); | |
dde08ee1 PA |
758 | |
759 | /* Write the adjusted jump into its displaced location. */ | |
760 | append_insns (to, 5, insn); | |
761 | return; | |
762 | } | |
763 | ||
764 | /* Adjust jumps with 32-bit relative addresses. Calls are already | |
765 | handled above. */ | |
766 | if (insn[0] == 0xe9) | |
767 | offset = 1; | |
768 | /* Adjust conditional jumps. */ | |
769 | else if (insn[0] == 0x0f && (insn[1] & 0xf0) == 0x80) | |
770 | offset = 2; | |
771 | ||
772 | if (offset) | |
773 | { | |
774 | rel32 = extract_signed_integer (insn + offset, 4, byte_order); | |
775 | newrel = (oldloc - *to) + rel32; | |
f4a1794a | 776 | store_signed_integer (insn + offset, 4, byte_order, newrel); |
dde08ee1 PA |
777 | if (debug_displaced) |
778 | fprintf_unfiltered (gdb_stdlog, | |
f4a1794a KY |
779 | "Adjusted insn rel32=%s at %s to" |
780 | " rel32=%s at %s\n", | |
dde08ee1 PA |
781 | hex_string (rel32), paddress (gdbarch, oldloc), |
782 | hex_string (newrel), paddress (gdbarch, *to)); | |
783 | } | |
784 | ||
785 | /* Write the adjusted instructions into their displaced | |
786 | location. */ | |
787 | append_insns (to, insn_length, buf); | |
788 | } | |
789 | ||
fc338970 | 790 | \f |
acd5c798 MK |
791 | #ifdef I386_REGNO_TO_SYMMETRY |
792 | #error "The Sequent Symmetry is no longer supported." | |
793 | #endif | |
c906108c | 794 | |
acd5c798 MK |
795 | /* According to the System V ABI, the registers %ebp, %ebx, %edi, %esi |
796 | and %esp "belong" to the calling function. Therefore these | |
797 | registers should be saved if they're going to be modified. */ | |
c906108c | 798 | |
acd5c798 MK |
799 | /* The maximum number of saved registers. This should include all |
800 | registers mentioned above, and %eip. */ | |
a3386186 | 801 | #define I386_NUM_SAVED_REGS I386_NUM_GREGS |
acd5c798 MK |
802 | |
803 | struct i386_frame_cache | |
c906108c | 804 | { |
acd5c798 MK |
805 | /* Base address. */ |
806 | CORE_ADDR base; | |
8fbca658 | 807 | int base_p; |
772562f8 | 808 | LONGEST sp_offset; |
acd5c798 MK |
809 | CORE_ADDR pc; |
810 | ||
fd13a04a AC |
811 | /* Saved registers. */ |
812 | CORE_ADDR saved_regs[I386_NUM_SAVED_REGS]; | |
acd5c798 | 813 | CORE_ADDR saved_sp; |
e0c62198 | 814 | int saved_sp_reg; |
acd5c798 MK |
815 | int pc_in_eax; |
816 | ||
817 | /* Stack space reserved for local variables. */ | |
818 | long locals; | |
819 | }; | |
820 | ||
821 | /* Allocate and initialize a frame cache. */ | |
822 | ||
823 | static struct i386_frame_cache * | |
fd13a04a | 824 | i386_alloc_frame_cache (void) |
acd5c798 MK |
825 | { |
826 | struct i386_frame_cache *cache; | |
827 | int i; | |
828 | ||
829 | cache = FRAME_OBSTACK_ZALLOC (struct i386_frame_cache); | |
830 | ||
831 | /* Base address. */ | |
8fbca658 | 832 | cache->base_p = 0; |
acd5c798 MK |
833 | cache->base = 0; |
834 | cache->sp_offset = -4; | |
835 | cache->pc = 0; | |
836 | ||
fd13a04a AC |
837 | /* Saved registers. We initialize these to -1 since zero is a valid |
838 | offset (that's where %ebp is supposed to be stored). */ | |
839 | for (i = 0; i < I386_NUM_SAVED_REGS; i++) | |
840 | cache->saved_regs[i] = -1; | |
acd5c798 | 841 | cache->saved_sp = 0; |
e0c62198 | 842 | cache->saved_sp_reg = -1; |
acd5c798 MK |
843 | cache->pc_in_eax = 0; |
844 | ||
845 | /* Frameless until proven otherwise. */ | |
846 | cache->locals = -1; | |
847 | ||
848 | return cache; | |
849 | } | |
c906108c | 850 | |
acd5c798 MK |
851 | /* If the instruction at PC is a jump, return the address of its |
852 | target. Otherwise, return PC. */ | |
c906108c | 853 | |
acd5c798 | 854 | static CORE_ADDR |
e17a4113 | 855 | i386_follow_jump (struct gdbarch *gdbarch, CORE_ADDR pc) |
acd5c798 | 856 | { |
e17a4113 | 857 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
63c0089f | 858 | gdb_byte op; |
acd5c798 MK |
859 | long delta = 0; |
860 | int data16 = 0; | |
c906108c | 861 | |
3dcabaa8 MS |
862 | if (target_read_memory (pc, &op, 1)) |
863 | return pc; | |
864 | ||
acd5c798 | 865 | if (op == 0x66) |
c906108c | 866 | { |
c906108c | 867 | data16 = 1; |
e17a4113 | 868 | op = read_memory_unsigned_integer (pc + 1, 1, byte_order); |
c906108c SS |
869 | } |
870 | ||
acd5c798 | 871 | switch (op) |
c906108c SS |
872 | { |
873 | case 0xe9: | |
fc338970 | 874 | /* Relative jump: if data16 == 0, disp32, else disp16. */ |
c906108c SS |
875 | if (data16) |
876 | { | |
e17a4113 | 877 | delta = read_memory_integer (pc + 2, 2, byte_order); |
c906108c | 878 | |
fc338970 MK |
879 | /* Include the size of the jmp instruction (including the |
880 | 0x66 prefix). */ | |
acd5c798 | 881 | delta += 4; |
c906108c SS |
882 | } |
883 | else | |
884 | { | |
e17a4113 | 885 | delta = read_memory_integer (pc + 1, 4, byte_order); |
c906108c | 886 | |
acd5c798 MK |
887 | /* Include the size of the jmp instruction. */ |
888 | delta += 5; | |
c906108c SS |
889 | } |
890 | break; | |
891 | case 0xeb: | |
fc338970 | 892 | /* Relative jump, disp8 (ignore data16). */ |
e17a4113 | 893 | delta = read_memory_integer (pc + data16 + 1, 1, byte_order); |
c906108c | 894 | |
acd5c798 | 895 | delta += data16 + 2; |
c906108c SS |
896 | break; |
897 | } | |
c906108c | 898 | |
acd5c798 MK |
899 | return pc + delta; |
900 | } | |
fc338970 | 901 | |
acd5c798 MK |
902 | /* Check whether PC points at a prologue for a function returning a |
903 | structure or union. If so, it updates CACHE and returns the | |
904 | address of the first instruction after the code sequence that | |
905 | removes the "hidden" argument from the stack or CURRENT_PC, | |
906 | whichever is smaller. Otherwise, return PC. */ | |
c906108c | 907 | |
acd5c798 MK |
908 | static CORE_ADDR |
909 | i386_analyze_struct_return (CORE_ADDR pc, CORE_ADDR current_pc, | |
910 | struct i386_frame_cache *cache) | |
c906108c | 911 | { |
acd5c798 MK |
912 | /* Functions that return a structure or union start with: |
913 | ||
914 | popl %eax 0x58 | |
915 | xchgl %eax, (%esp) 0x87 0x04 0x24 | |
916 | or xchgl %eax, 0(%esp) 0x87 0x44 0x24 0x00 | |
917 | ||
918 | (the System V compiler puts out the second `xchg' instruction, | |
919 | and the assembler doesn't try to optimize it, so the 'sib' form | |
920 | gets generated). This sequence is used to get the address of the | |
921 | return buffer for a function that returns a structure. */ | |
63c0089f MK |
922 | static gdb_byte proto1[3] = { 0x87, 0x04, 0x24 }; |
923 | static gdb_byte proto2[4] = { 0x87, 0x44, 0x24, 0x00 }; | |
924 | gdb_byte buf[4]; | |
925 | gdb_byte op; | |
c906108c | 926 | |
acd5c798 MK |
927 | if (current_pc <= pc) |
928 | return pc; | |
929 | ||
3dcabaa8 MS |
930 | if (target_read_memory (pc, &op, 1)) |
931 | return pc; | |
c906108c | 932 | |
acd5c798 MK |
933 | if (op != 0x58) /* popl %eax */ |
934 | return pc; | |
c906108c | 935 | |
3dcabaa8 MS |
936 | if (target_read_memory (pc + 1, buf, 4)) |
937 | return pc; | |
938 | ||
acd5c798 MK |
939 | if (memcmp (buf, proto1, 3) != 0 && memcmp (buf, proto2, 4) != 0) |
940 | return pc; | |
c906108c | 941 | |
acd5c798 | 942 | if (current_pc == pc) |
c906108c | 943 | { |
acd5c798 MK |
944 | cache->sp_offset += 4; |
945 | return current_pc; | |
c906108c SS |
946 | } |
947 | ||
acd5c798 | 948 | if (current_pc == pc + 1) |
c906108c | 949 | { |
acd5c798 MK |
950 | cache->pc_in_eax = 1; |
951 | return current_pc; | |
952 | } | |
953 | ||
954 | if (buf[1] == proto1[1]) | |
955 | return pc + 4; | |
956 | else | |
957 | return pc + 5; | |
958 | } | |
959 | ||
960 | static CORE_ADDR | |
961 | i386_skip_probe (CORE_ADDR pc) | |
962 | { | |
963 | /* A function may start with | |
fc338970 | 964 | |
acd5c798 MK |
965 | pushl constant |
966 | call _probe | |
967 | addl $4, %esp | |
fc338970 | 968 | |
acd5c798 MK |
969 | followed by |
970 | ||
971 | pushl %ebp | |
fc338970 | 972 | |
acd5c798 | 973 | etc. */ |
63c0089f MK |
974 | gdb_byte buf[8]; |
975 | gdb_byte op; | |
fc338970 | 976 | |
3dcabaa8 MS |
977 | if (target_read_memory (pc, &op, 1)) |
978 | return pc; | |
acd5c798 MK |
979 | |
980 | if (op == 0x68 || op == 0x6a) | |
981 | { | |
982 | int delta; | |
c906108c | 983 | |
acd5c798 MK |
984 | /* Skip past the `pushl' instruction; it has either a one-byte or a |
985 | four-byte operand, depending on the opcode. */ | |
c906108c | 986 | if (op == 0x68) |
acd5c798 | 987 | delta = 5; |
c906108c | 988 | else |
acd5c798 | 989 | delta = 2; |
c906108c | 990 | |
acd5c798 MK |
991 | /* Read the following 8 bytes, which should be `call _probe' (6 |
992 | bytes) followed by `addl $4,%esp' (2 bytes). */ | |
993 | read_memory (pc + delta, buf, sizeof (buf)); | |
c906108c | 994 | if (buf[0] == 0xe8 && buf[6] == 0xc4 && buf[7] == 0x4) |
acd5c798 | 995 | pc += delta + sizeof (buf); |
c906108c SS |
996 | } |
997 | ||
acd5c798 MK |
998 | return pc; |
999 | } | |
1000 | ||
92dd43fa MK |
1001 | /* GCC 4.1 and later, can put code in the prologue to realign the |
1002 | stack pointer. Check whether PC points to such code, and update | |
1003 | CACHE accordingly. Return the first instruction after the code | |
1004 | sequence or CURRENT_PC, whichever is smaller. If we don't | |
1005 | recognize the code, return PC. */ | |
1006 | ||
1007 | static CORE_ADDR | |
1008 | i386_analyze_stack_align (CORE_ADDR pc, CORE_ADDR current_pc, | |
1009 | struct i386_frame_cache *cache) | |
1010 | { | |
e0c62198 L |
1011 | /* There are 2 code sequences to re-align stack before the frame |
1012 | gets set up: | |
1013 | ||
1014 | 1. Use a caller-saved saved register: | |
1015 | ||
1016 | leal 4(%esp), %reg | |
1017 | andl $-XXX, %esp | |
1018 | pushl -4(%reg) | |
1019 | ||
1020 | 2. Use a callee-saved saved register: | |
1021 | ||
1022 | pushl %reg | |
1023 | leal 8(%esp), %reg | |
1024 | andl $-XXX, %esp | |
1025 | pushl -4(%reg) | |
1026 | ||
1027 | "andl $-XXX, %esp" can be either 3 bytes or 6 bytes: | |
1028 | ||
1029 | 0x83 0xe4 0xf0 andl $-16, %esp | |
1030 | 0x81 0xe4 0x00 0xff 0xff 0xff andl $-256, %esp | |
1031 | */ | |
1032 | ||
1033 | gdb_byte buf[14]; | |
1034 | int reg; | |
1035 | int offset, offset_and; | |
1036 | static int regnums[8] = { | |
1037 | I386_EAX_REGNUM, /* %eax */ | |
1038 | I386_ECX_REGNUM, /* %ecx */ | |
1039 | I386_EDX_REGNUM, /* %edx */ | |
1040 | I386_EBX_REGNUM, /* %ebx */ | |
1041 | I386_ESP_REGNUM, /* %esp */ | |
1042 | I386_EBP_REGNUM, /* %ebp */ | |
1043 | I386_ESI_REGNUM, /* %esi */ | |
1044 | I386_EDI_REGNUM /* %edi */ | |
92dd43fa | 1045 | }; |
92dd43fa | 1046 | |
e0c62198 L |
1047 | if (target_read_memory (pc, buf, sizeof buf)) |
1048 | return pc; | |
1049 | ||
1050 | /* Check caller-saved saved register. The first instruction has | |
1051 | to be "leal 4(%esp), %reg". */ | |
1052 | if (buf[0] == 0x8d && buf[2] == 0x24 && buf[3] == 0x4) | |
1053 | { | |
1054 | /* MOD must be binary 10 and R/M must be binary 100. */ | |
1055 | if ((buf[1] & 0xc7) != 0x44) | |
1056 | return pc; | |
1057 | ||
1058 | /* REG has register number. */ | |
1059 | reg = (buf[1] >> 3) & 7; | |
1060 | offset = 4; | |
1061 | } | |
1062 | else | |
1063 | { | |
1064 | /* Check callee-saved saved register. The first instruction | |
1065 | has to be "pushl %reg". */ | |
1066 | if ((buf[0] & 0xf8) != 0x50) | |
1067 | return pc; | |
1068 | ||
1069 | /* Get register. */ | |
1070 | reg = buf[0] & 0x7; | |
1071 | ||
1072 | /* The next instruction has to be "leal 8(%esp), %reg". */ | |
1073 | if (buf[1] != 0x8d || buf[3] != 0x24 || buf[4] != 0x8) | |
1074 | return pc; | |
1075 | ||
1076 | /* MOD must be binary 10 and R/M must be binary 100. */ | |
1077 | if ((buf[2] & 0xc7) != 0x44) | |
1078 | return pc; | |
1079 | ||
1080 | /* REG has register number. Registers in pushl and leal have to | |
1081 | be the same. */ | |
1082 | if (reg != ((buf[2] >> 3) & 7)) | |
1083 | return pc; | |
1084 | ||
1085 | offset = 5; | |
1086 | } | |
1087 | ||
1088 | /* Rigister can't be %esp nor %ebp. */ | |
1089 | if (reg == 4 || reg == 5) | |
1090 | return pc; | |
1091 | ||
1092 | /* The next instruction has to be "andl $-XXX, %esp". */ | |
1093 | if (buf[offset + 1] != 0xe4 | |
1094 | || (buf[offset] != 0x81 && buf[offset] != 0x83)) | |
1095 | return pc; | |
1096 | ||
1097 | offset_and = offset; | |
1098 | offset += buf[offset] == 0x81 ? 6 : 3; | |
1099 | ||
1100 | /* The next instruction has to be "pushl -4(%reg)". 8bit -4 is | |
1101 | 0xfc. REG must be binary 110 and MOD must be binary 01. */ | |
1102 | if (buf[offset] != 0xff | |
1103 | || buf[offset + 2] != 0xfc | |
1104 | || (buf[offset + 1] & 0xf8) != 0x70) | |
1105 | return pc; | |
1106 | ||
1107 | /* R/M has register. Registers in leal and pushl have to be the | |
1108 | same. */ | |
1109 | if (reg != (buf[offset + 1] & 7)) | |
92dd43fa MK |
1110 | return pc; |
1111 | ||
e0c62198 L |
1112 | if (current_pc > pc + offset_and) |
1113 | cache->saved_sp_reg = regnums[reg]; | |
92dd43fa | 1114 | |
e0c62198 | 1115 | return min (pc + offset + 3, current_pc); |
92dd43fa MK |
1116 | } |
1117 | ||
37bdc87e | 1118 | /* Maximum instruction length we need to handle. */ |
237fc4c9 | 1119 | #define I386_MAX_MATCHED_INSN_LEN 6 |
37bdc87e MK |
1120 | |
1121 | /* Instruction description. */ | |
1122 | struct i386_insn | |
1123 | { | |
1124 | size_t len; | |
237fc4c9 PA |
1125 | gdb_byte insn[I386_MAX_MATCHED_INSN_LEN]; |
1126 | gdb_byte mask[I386_MAX_MATCHED_INSN_LEN]; | |
37bdc87e MK |
1127 | }; |
1128 | ||
1129 | /* Search for the instruction at PC in the list SKIP_INSNS. Return | |
1130 | the first instruction description that matches. Otherwise, return | |
1131 | NULL. */ | |
1132 | ||
1133 | static struct i386_insn * | |
1134 | i386_match_insn (CORE_ADDR pc, struct i386_insn *skip_insns) | |
1135 | { | |
1136 | struct i386_insn *insn; | |
63c0089f | 1137 | gdb_byte op; |
37bdc87e | 1138 | |
3dcabaa8 MS |
1139 | if (target_read_memory (pc, &op, 1)) |
1140 | return NULL; | |
37bdc87e MK |
1141 | |
1142 | for (insn = skip_insns; insn->len > 0; insn++) | |
1143 | { | |
1144 | if ((op & insn->mask[0]) == insn->insn[0]) | |
1145 | { | |
237fc4c9 | 1146 | gdb_byte buf[I386_MAX_MATCHED_INSN_LEN - 1]; |
613e8135 | 1147 | int insn_matched = 1; |
37bdc87e MK |
1148 | size_t i; |
1149 | ||
1150 | gdb_assert (insn->len > 1); | |
237fc4c9 | 1151 | gdb_assert (insn->len <= I386_MAX_MATCHED_INSN_LEN); |
37bdc87e | 1152 | |
3dcabaa8 MS |
1153 | if (target_read_memory (pc + 1, buf, insn->len - 1)) |
1154 | return NULL; | |
1155 | ||
37bdc87e MK |
1156 | for (i = 1; i < insn->len; i++) |
1157 | { | |
1158 | if ((buf[i - 1] & insn->mask[i]) != insn->insn[i]) | |
613e8135 | 1159 | insn_matched = 0; |
37bdc87e | 1160 | } |
613e8135 MK |
1161 | |
1162 | if (insn_matched) | |
1163 | return insn; | |
37bdc87e MK |
1164 | } |
1165 | } | |
1166 | ||
1167 | return NULL; | |
1168 | } | |
1169 | ||
1170 | /* Some special instructions that might be migrated by GCC into the | |
1171 | part of the prologue that sets up the new stack frame. Because the | |
1172 | stack frame hasn't been setup yet, no registers have been saved | |
1173 | yet, and only the scratch registers %eax, %ecx and %edx can be | |
1174 | touched. */ | |
1175 | ||
1176 | struct i386_insn i386_frame_setup_skip_insns[] = | |
1177 | { | |
1777feb0 | 1178 | /* Check for `movb imm8, r' and `movl imm32, r'. |
37bdc87e MK |
1179 | |
1180 | ??? Should we handle 16-bit operand-sizes here? */ | |
1181 | ||
1182 | /* `movb imm8, %al' and `movb imm8, %ah' */ | |
1183 | /* `movb imm8, %cl' and `movb imm8, %ch' */ | |
1184 | { 2, { 0xb0, 0x00 }, { 0xfa, 0x00 } }, | |
1185 | /* `movb imm8, %dl' and `movb imm8, %dh' */ | |
1186 | { 2, { 0xb2, 0x00 }, { 0xfb, 0x00 } }, | |
1187 | /* `movl imm32, %eax' and `movl imm32, %ecx' */ | |
1188 | { 5, { 0xb8 }, { 0xfe } }, | |
1189 | /* `movl imm32, %edx' */ | |
1190 | { 5, { 0xba }, { 0xff } }, | |
1191 | ||
1192 | /* Check for `mov imm32, r32'. Note that there is an alternative | |
1193 | encoding for `mov m32, %eax'. | |
1194 | ||
1195 | ??? Should we handle SIB adressing here? | |
1196 | ??? Should we handle 16-bit operand-sizes here? */ | |
1197 | ||
1198 | /* `movl m32, %eax' */ | |
1199 | { 5, { 0xa1 }, { 0xff } }, | |
1200 | /* `movl m32, %eax' and `mov; m32, %ecx' */ | |
1201 | { 6, { 0x89, 0x05 }, {0xff, 0xf7 } }, | |
1202 | /* `movl m32, %edx' */ | |
1203 | { 6, { 0x89, 0x15 }, {0xff, 0xff } }, | |
1204 | ||
1205 | /* Check for `xorl r32, r32' and the equivalent `subl r32, r32'. | |
1206 | Because of the symmetry, there are actually two ways to encode | |
1207 | these instructions; opcode bytes 0x29 and 0x2b for `subl' and | |
1208 | opcode bytes 0x31 and 0x33 for `xorl'. */ | |
1209 | ||
1210 | /* `subl %eax, %eax' */ | |
1211 | { 2, { 0x29, 0xc0 }, { 0xfd, 0xff } }, | |
1212 | /* `subl %ecx, %ecx' */ | |
1213 | { 2, { 0x29, 0xc9 }, { 0xfd, 0xff } }, | |
1214 | /* `subl %edx, %edx' */ | |
1215 | { 2, { 0x29, 0xd2 }, { 0xfd, 0xff } }, | |
1216 | /* `xorl %eax, %eax' */ | |
1217 | { 2, { 0x31, 0xc0 }, { 0xfd, 0xff } }, | |
1218 | /* `xorl %ecx, %ecx' */ | |
1219 | { 2, { 0x31, 0xc9 }, { 0xfd, 0xff } }, | |
1220 | /* `xorl %edx, %edx' */ | |
1221 | { 2, { 0x31, 0xd2 }, { 0xfd, 0xff } }, | |
1222 | { 0 } | |
1223 | }; | |
1224 | ||
e11481da PM |
1225 | |
1226 | /* Check whether PC points to a no-op instruction. */ | |
1227 | static CORE_ADDR | |
1228 | i386_skip_noop (CORE_ADDR pc) | |
1229 | { | |
1230 | gdb_byte op; | |
1231 | int check = 1; | |
1232 | ||
3dcabaa8 MS |
1233 | if (target_read_memory (pc, &op, 1)) |
1234 | return pc; | |
e11481da PM |
1235 | |
1236 | while (check) | |
1237 | { | |
1238 | check = 0; | |
1239 | /* Ignore `nop' instruction. */ | |
1240 | if (op == 0x90) | |
1241 | { | |
1242 | pc += 1; | |
3dcabaa8 MS |
1243 | if (target_read_memory (pc, &op, 1)) |
1244 | return pc; | |
e11481da PM |
1245 | check = 1; |
1246 | } | |
1247 | /* Ignore no-op instruction `mov %edi, %edi'. | |
1248 | Microsoft system dlls often start with | |
1249 | a `mov %edi,%edi' instruction. | |
1250 | The 5 bytes before the function start are | |
1251 | filled with `nop' instructions. | |
1252 | This pattern can be used for hot-patching: | |
1253 | The `mov %edi, %edi' instruction can be replaced by a | |
1254 | near jump to the location of the 5 `nop' instructions | |
1255 | which can be replaced by a 32-bit jump to anywhere | |
1256 | in the 32-bit address space. */ | |
1257 | ||
1258 | else if (op == 0x8b) | |
1259 | { | |
3dcabaa8 MS |
1260 | if (target_read_memory (pc + 1, &op, 1)) |
1261 | return pc; | |
1262 | ||
e11481da PM |
1263 | if (op == 0xff) |
1264 | { | |
1265 | pc += 2; | |
3dcabaa8 MS |
1266 | if (target_read_memory (pc, &op, 1)) |
1267 | return pc; | |
1268 | ||
e11481da PM |
1269 | check = 1; |
1270 | } | |
1271 | } | |
1272 | } | |
1273 | return pc; | |
1274 | } | |
1275 | ||
acd5c798 MK |
1276 | /* Check whether PC points at a code that sets up a new stack frame. |
1277 | If so, it updates CACHE and returns the address of the first | |
37bdc87e MK |
1278 | instruction after the sequence that sets up the frame or LIMIT, |
1279 | whichever is smaller. If we don't recognize the code, return PC. */ | |
acd5c798 MK |
1280 | |
1281 | static CORE_ADDR | |
e17a4113 UW |
1282 | i386_analyze_frame_setup (struct gdbarch *gdbarch, |
1283 | CORE_ADDR pc, CORE_ADDR limit, | |
acd5c798 MK |
1284 | struct i386_frame_cache *cache) |
1285 | { | |
e17a4113 | 1286 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
37bdc87e | 1287 | struct i386_insn *insn; |
63c0089f | 1288 | gdb_byte op; |
26604a34 | 1289 | int skip = 0; |
acd5c798 | 1290 | |
37bdc87e MK |
1291 | if (limit <= pc) |
1292 | return limit; | |
acd5c798 | 1293 | |
3dcabaa8 MS |
1294 | if (target_read_memory (pc, &op, 1)) |
1295 | return pc; | |
acd5c798 | 1296 | |
c906108c | 1297 | if (op == 0x55) /* pushl %ebp */ |
c5aa993b | 1298 | { |
acd5c798 MK |
1299 | /* Take into account that we've executed the `pushl %ebp' that |
1300 | starts this instruction sequence. */ | |
fd13a04a | 1301 | cache->saved_regs[I386_EBP_REGNUM] = 0; |
acd5c798 | 1302 | cache->sp_offset += 4; |
37bdc87e | 1303 | pc++; |
acd5c798 MK |
1304 | |
1305 | /* If that's all, return now. */ | |
37bdc87e MK |
1306 | if (limit <= pc) |
1307 | return limit; | |
26604a34 | 1308 | |
b4632131 | 1309 | /* Check for some special instructions that might be migrated by |
37bdc87e MK |
1310 | GCC into the prologue and skip them. At this point in the |
1311 | prologue, code should only touch the scratch registers %eax, | |
1312 | %ecx and %edx, so while the number of posibilities is sheer, | |
1313 | it is limited. | |
5daa5b4e | 1314 | |
26604a34 MK |
1315 | Make sure we only skip these instructions if we later see the |
1316 | `movl %esp, %ebp' that actually sets up the frame. */ | |
37bdc87e | 1317 | while (pc + skip < limit) |
26604a34 | 1318 | { |
37bdc87e MK |
1319 | insn = i386_match_insn (pc + skip, i386_frame_setup_skip_insns); |
1320 | if (insn == NULL) | |
1321 | break; | |
b4632131 | 1322 | |
37bdc87e | 1323 | skip += insn->len; |
26604a34 MK |
1324 | } |
1325 | ||
37bdc87e MK |
1326 | /* If that's all, return now. */ |
1327 | if (limit <= pc + skip) | |
1328 | return limit; | |
1329 | ||
3dcabaa8 MS |
1330 | if (target_read_memory (pc + skip, &op, 1)) |
1331 | return pc + skip; | |
37bdc87e | 1332 | |
26604a34 | 1333 | /* Check for `movl %esp, %ebp' -- can be written in two ways. */ |
acd5c798 | 1334 | switch (op) |
c906108c SS |
1335 | { |
1336 | case 0x8b: | |
e17a4113 UW |
1337 | if (read_memory_unsigned_integer (pc + skip + 1, 1, byte_order) |
1338 | != 0xec) | |
37bdc87e | 1339 | return pc; |
c906108c SS |
1340 | break; |
1341 | case 0x89: | |
e17a4113 UW |
1342 | if (read_memory_unsigned_integer (pc + skip + 1, 1, byte_order) |
1343 | != 0xe5) | |
37bdc87e | 1344 | return pc; |
c906108c SS |
1345 | break; |
1346 | default: | |
37bdc87e | 1347 | return pc; |
c906108c | 1348 | } |
acd5c798 | 1349 | |
26604a34 MK |
1350 | /* OK, we actually have a frame. We just don't know how large |
1351 | it is yet. Set its size to zero. We'll adjust it if | |
1352 | necessary. We also now commit to skipping the special | |
1353 | instructions mentioned before. */ | |
acd5c798 | 1354 | cache->locals = 0; |
37bdc87e | 1355 | pc += (skip + 2); |
acd5c798 MK |
1356 | |
1357 | /* If that's all, return now. */ | |
37bdc87e MK |
1358 | if (limit <= pc) |
1359 | return limit; | |
acd5c798 | 1360 | |
fc338970 MK |
1361 | /* Check for stack adjustment |
1362 | ||
acd5c798 | 1363 | subl $XXX, %esp |
fc338970 | 1364 | |
fd35795f | 1365 | NOTE: You can't subtract a 16-bit immediate from a 32-bit |
fc338970 | 1366 | reg, so we don't have to worry about a data16 prefix. */ |
3dcabaa8 MS |
1367 | if (target_read_memory (pc, &op, 1)) |
1368 | return pc; | |
c906108c SS |
1369 | if (op == 0x83) |
1370 | { | |
fd35795f | 1371 | /* `subl' with 8-bit immediate. */ |
e17a4113 | 1372 | if (read_memory_unsigned_integer (pc + 1, 1, byte_order) != 0xec) |
fc338970 | 1373 | /* Some instruction starting with 0x83 other than `subl'. */ |
37bdc87e | 1374 | return pc; |
acd5c798 | 1375 | |
37bdc87e MK |
1376 | /* `subl' with signed 8-bit immediate (though it wouldn't |
1377 | make sense to be negative). */ | |
e17a4113 | 1378 | cache->locals = read_memory_integer (pc + 2, 1, byte_order); |
37bdc87e | 1379 | return pc + 3; |
c906108c SS |
1380 | } |
1381 | else if (op == 0x81) | |
1382 | { | |
fd35795f | 1383 | /* Maybe it is `subl' with a 32-bit immediate. */ |
e17a4113 | 1384 | if (read_memory_unsigned_integer (pc + 1, 1, byte_order) != 0xec) |
fc338970 | 1385 | /* Some instruction starting with 0x81 other than `subl'. */ |
37bdc87e | 1386 | return pc; |
acd5c798 | 1387 | |
fd35795f | 1388 | /* It is `subl' with a 32-bit immediate. */ |
e17a4113 | 1389 | cache->locals = read_memory_integer (pc + 2, 4, byte_order); |
37bdc87e | 1390 | return pc + 6; |
c906108c SS |
1391 | } |
1392 | else | |
1393 | { | |
acd5c798 | 1394 | /* Some instruction other than `subl'. */ |
37bdc87e | 1395 | return pc; |
c906108c SS |
1396 | } |
1397 | } | |
37bdc87e | 1398 | else if (op == 0xc8) /* enter */ |
c906108c | 1399 | { |
e17a4113 | 1400 | cache->locals = read_memory_unsigned_integer (pc + 1, 2, byte_order); |
acd5c798 | 1401 | return pc + 4; |
c906108c | 1402 | } |
21d0e8a4 | 1403 | |
acd5c798 | 1404 | return pc; |
21d0e8a4 MK |
1405 | } |
1406 | ||
acd5c798 MK |
1407 | /* Check whether PC points at code that saves registers on the stack. |
1408 | If so, it updates CACHE and returns the address of the first | |
1409 | instruction after the register saves or CURRENT_PC, whichever is | |
1410 | smaller. Otherwise, return PC. */ | |
6bff26de MK |
1411 | |
1412 | static CORE_ADDR | |
acd5c798 MK |
1413 | i386_analyze_register_saves (CORE_ADDR pc, CORE_ADDR current_pc, |
1414 | struct i386_frame_cache *cache) | |
6bff26de | 1415 | { |
99ab4326 | 1416 | CORE_ADDR offset = 0; |
63c0089f | 1417 | gdb_byte op; |
99ab4326 | 1418 | int i; |
c0d1d883 | 1419 | |
99ab4326 MK |
1420 | if (cache->locals > 0) |
1421 | offset -= cache->locals; | |
1422 | for (i = 0; i < 8 && pc < current_pc; i++) | |
1423 | { | |
3dcabaa8 MS |
1424 | if (target_read_memory (pc, &op, 1)) |
1425 | return pc; | |
99ab4326 MK |
1426 | if (op < 0x50 || op > 0x57) |
1427 | break; | |
0d17c81d | 1428 | |
99ab4326 MK |
1429 | offset -= 4; |
1430 | cache->saved_regs[op - 0x50] = offset; | |
1431 | cache->sp_offset += 4; | |
1432 | pc++; | |
6bff26de MK |
1433 | } |
1434 | ||
acd5c798 | 1435 | return pc; |
22797942 AC |
1436 | } |
1437 | ||
acd5c798 MK |
1438 | /* Do a full analysis of the prologue at PC and update CACHE |
1439 | accordingly. Bail out early if CURRENT_PC is reached. Return the | |
1440 | address where the analysis stopped. | |
ed84f6c1 | 1441 | |
fc338970 MK |
1442 | We handle these cases: |
1443 | ||
1444 | The startup sequence can be at the start of the function, or the | |
1445 | function can start with a branch to startup code at the end. | |
1446 | ||
1447 | %ebp can be set up with either the 'enter' instruction, or "pushl | |
1448 | %ebp, movl %esp, %ebp" (`enter' is too slow to be useful, but was | |
1449 | once used in the System V compiler). | |
1450 | ||
1451 | Local space is allocated just below the saved %ebp by either the | |
fd35795f MK |
1452 | 'enter' instruction, or by "subl $<size>, %esp". 'enter' has a |
1453 | 16-bit unsigned argument for space to allocate, and the 'addl' | |
1454 | instruction could have either a signed byte, or 32-bit immediate. | |
fc338970 MK |
1455 | |
1456 | Next, the registers used by this function are pushed. With the | |
1457 | System V compiler they will always be in the order: %edi, %esi, | |
1458 | %ebx (and sometimes a harmless bug causes it to also save but not | |
1459 | restore %eax); however, the code below is willing to see the pushes | |
1460 | in any order, and will handle up to 8 of them. | |
1461 | ||
1462 | If the setup sequence is at the end of the function, then the next | |
1463 | instruction will be a branch back to the start. */ | |
c906108c | 1464 | |
acd5c798 | 1465 | static CORE_ADDR |
e17a4113 UW |
1466 | i386_analyze_prologue (struct gdbarch *gdbarch, |
1467 | CORE_ADDR pc, CORE_ADDR current_pc, | |
acd5c798 | 1468 | struct i386_frame_cache *cache) |
c906108c | 1469 | { |
e11481da | 1470 | pc = i386_skip_noop (pc); |
e17a4113 | 1471 | pc = i386_follow_jump (gdbarch, pc); |
acd5c798 MK |
1472 | pc = i386_analyze_struct_return (pc, current_pc, cache); |
1473 | pc = i386_skip_probe (pc); | |
92dd43fa | 1474 | pc = i386_analyze_stack_align (pc, current_pc, cache); |
e17a4113 | 1475 | pc = i386_analyze_frame_setup (gdbarch, pc, current_pc, cache); |
acd5c798 | 1476 | return i386_analyze_register_saves (pc, current_pc, cache); |
c906108c SS |
1477 | } |
1478 | ||
fc338970 | 1479 | /* Return PC of first real instruction. */ |
c906108c | 1480 | |
3a1e71e3 | 1481 | static CORE_ADDR |
6093d2eb | 1482 | i386_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc) |
c906108c | 1483 | { |
e17a4113 UW |
1484 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1485 | ||
63c0089f | 1486 | static gdb_byte pic_pat[6] = |
acd5c798 MK |
1487 | { |
1488 | 0xe8, 0, 0, 0, 0, /* call 0x0 */ | |
1489 | 0x5b, /* popl %ebx */ | |
c5aa993b | 1490 | }; |
acd5c798 MK |
1491 | struct i386_frame_cache cache; |
1492 | CORE_ADDR pc; | |
63c0089f | 1493 | gdb_byte op; |
acd5c798 | 1494 | int i; |
c5aa993b | 1495 | |
acd5c798 | 1496 | cache.locals = -1; |
e17a4113 | 1497 | pc = i386_analyze_prologue (gdbarch, start_pc, 0xffffffff, &cache); |
acd5c798 MK |
1498 | if (cache.locals < 0) |
1499 | return start_pc; | |
c5aa993b | 1500 | |
acd5c798 | 1501 | /* Found valid frame setup. */ |
c906108c | 1502 | |
fc338970 MK |
1503 | /* The native cc on SVR4 in -K PIC mode inserts the following code |
1504 | to get the address of the global offset table (GOT) into register | |
acd5c798 MK |
1505 | %ebx: |
1506 | ||
fc338970 MK |
1507 | call 0x0 |
1508 | popl %ebx | |
1509 | movl %ebx,x(%ebp) (optional) | |
1510 | addl y,%ebx | |
1511 | ||
c906108c SS |
1512 | This code is with the rest of the prologue (at the end of the |
1513 | function), so we have to skip it to get to the first real | |
1514 | instruction at the start of the function. */ | |
c5aa993b | 1515 | |
c906108c SS |
1516 | for (i = 0; i < 6; i++) |
1517 | { | |
3dcabaa8 MS |
1518 | if (target_read_memory (pc + i, &op, 1)) |
1519 | return pc; | |
1520 | ||
c5aa993b | 1521 | if (pic_pat[i] != op) |
c906108c SS |
1522 | break; |
1523 | } | |
1524 | if (i == 6) | |
1525 | { | |
acd5c798 MK |
1526 | int delta = 6; |
1527 | ||
3dcabaa8 MS |
1528 | if (target_read_memory (pc + delta, &op, 1)) |
1529 | return pc; | |
c906108c | 1530 | |
c5aa993b | 1531 | if (op == 0x89) /* movl %ebx, x(%ebp) */ |
c906108c | 1532 | { |
e17a4113 | 1533 | op = read_memory_unsigned_integer (pc + delta + 1, 1, byte_order); |
acd5c798 | 1534 | |
fc338970 | 1535 | if (op == 0x5d) /* One byte offset from %ebp. */ |
acd5c798 | 1536 | delta += 3; |
fc338970 | 1537 | else if (op == 0x9d) /* Four byte offset from %ebp. */ |
acd5c798 | 1538 | delta += 6; |
fc338970 | 1539 | else /* Unexpected instruction. */ |
acd5c798 MK |
1540 | delta = 0; |
1541 | ||
3dcabaa8 MS |
1542 | if (target_read_memory (pc + delta, &op, 1)) |
1543 | return pc; | |
c906108c | 1544 | } |
acd5c798 | 1545 | |
c5aa993b | 1546 | /* addl y,%ebx */ |
acd5c798 | 1547 | if (delta > 0 && op == 0x81 |
e17a4113 UW |
1548 | && read_memory_unsigned_integer (pc + delta + 1, 1, byte_order) |
1549 | == 0xc3) | |
c906108c | 1550 | { |
acd5c798 | 1551 | pc += delta + 6; |
c906108c SS |
1552 | } |
1553 | } | |
c5aa993b | 1554 | |
e63bbc88 MK |
1555 | /* If the function starts with a branch (to startup code at the end) |
1556 | the last instruction should bring us back to the first | |
1557 | instruction of the real code. */ | |
e17a4113 UW |
1558 | if (i386_follow_jump (gdbarch, start_pc) != start_pc) |
1559 | pc = i386_follow_jump (gdbarch, pc); | |
e63bbc88 MK |
1560 | |
1561 | return pc; | |
c906108c SS |
1562 | } |
1563 | ||
4309257c PM |
1564 | /* Check that the code pointed to by PC corresponds to a call to |
1565 | __main, skip it if so. Return PC otherwise. */ | |
1566 | ||
1567 | CORE_ADDR | |
1568 | i386_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) | |
1569 | { | |
e17a4113 | 1570 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
4309257c PM |
1571 | gdb_byte op; |
1572 | ||
3dcabaa8 MS |
1573 | if (target_read_memory (pc, &op, 1)) |
1574 | return pc; | |
4309257c PM |
1575 | if (op == 0xe8) |
1576 | { | |
1577 | gdb_byte buf[4]; | |
1578 | ||
1579 | if (target_read_memory (pc + 1, buf, sizeof buf) == 0) | |
1580 | { | |
1581 | /* Make sure address is computed correctly as a 32bit | |
1582 | integer even if CORE_ADDR is 64 bit wide. */ | |
1583 | struct minimal_symbol *s; | |
e17a4113 | 1584 | CORE_ADDR call_dest; |
4309257c | 1585 | |
e17a4113 | 1586 | call_dest = pc + 5 + extract_signed_integer (buf, 4, byte_order); |
4309257c PM |
1587 | call_dest = call_dest & 0xffffffffU; |
1588 | s = lookup_minimal_symbol_by_pc (call_dest); | |
1589 | if (s != NULL | |
1590 | && SYMBOL_LINKAGE_NAME (s) != NULL | |
1591 | && strcmp (SYMBOL_LINKAGE_NAME (s), "__main") == 0) | |
1592 | pc += 5; | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | return pc; | |
1597 | } | |
1598 | ||
acd5c798 | 1599 | /* This function is 64-bit safe. */ |
93924b6b | 1600 | |
acd5c798 MK |
1601 | static CORE_ADDR |
1602 | i386_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) | |
93924b6b | 1603 | { |
63c0089f | 1604 | gdb_byte buf[8]; |
acd5c798 | 1605 | |
875f8d0e | 1606 | frame_unwind_register (next_frame, gdbarch_pc_regnum (gdbarch), buf); |
0dfff4cb | 1607 | return extract_typed_address (buf, builtin_type (gdbarch)->builtin_func_ptr); |
93924b6b | 1608 | } |
acd5c798 | 1609 | \f |
93924b6b | 1610 | |
acd5c798 | 1611 | /* Normal frames. */ |
c5aa993b | 1612 | |
8fbca658 PA |
1613 | static void |
1614 | i386_frame_cache_1 (struct frame_info *this_frame, | |
1615 | struct i386_frame_cache *cache) | |
a7769679 | 1616 | { |
e17a4113 UW |
1617 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
1618 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
63c0089f | 1619 | gdb_byte buf[4]; |
acd5c798 MK |
1620 | int i; |
1621 | ||
8fbca658 | 1622 | cache->pc = get_frame_func (this_frame); |
acd5c798 MK |
1623 | |
1624 | /* In principle, for normal frames, %ebp holds the frame pointer, | |
1625 | which holds the base address for the current stack frame. | |
1626 | However, for functions that don't need it, the frame pointer is | |
1627 | optional. For these "frameless" functions the frame pointer is | |
1628 | actually the frame pointer of the calling frame. Signal | |
1629 | trampolines are just a special case of a "frameless" function. | |
1630 | They (usually) share their frame pointer with the frame that was | |
1631 | in progress when the signal occurred. */ | |
1632 | ||
10458914 | 1633 | get_frame_register (this_frame, I386_EBP_REGNUM, buf); |
e17a4113 | 1634 | cache->base = extract_unsigned_integer (buf, 4, byte_order); |
acd5c798 | 1635 | if (cache->base == 0) |
8fbca658 | 1636 | return; |
acd5c798 MK |
1637 | |
1638 | /* For normal frames, %eip is stored at 4(%ebp). */ | |
fd13a04a | 1639 | cache->saved_regs[I386_EIP_REGNUM] = 4; |
acd5c798 | 1640 | |
acd5c798 | 1641 | if (cache->pc != 0) |
e17a4113 UW |
1642 | i386_analyze_prologue (gdbarch, cache->pc, get_frame_pc (this_frame), |
1643 | cache); | |
acd5c798 MK |
1644 | |
1645 | if (cache->locals < 0) | |
1646 | { | |
1647 | /* We didn't find a valid frame, which means that CACHE->base | |
1648 | currently holds the frame pointer for our calling frame. If | |
1649 | we're at the start of a function, or somewhere half-way its | |
1650 | prologue, the function's frame probably hasn't been fully | |
1651 | setup yet. Try to reconstruct the base address for the stack | |
1652 | frame by looking at the stack pointer. For truly "frameless" | |
1653 | functions this might work too. */ | |
1654 | ||
e0c62198 | 1655 | if (cache->saved_sp_reg != -1) |
92dd43fa | 1656 | { |
8fbca658 PA |
1657 | /* Saved stack pointer has been saved. */ |
1658 | get_frame_register (this_frame, cache->saved_sp_reg, buf); | |
1659 | cache->saved_sp = extract_unsigned_integer (buf, 4, byte_order); | |
1660 | ||
92dd43fa MK |
1661 | /* We're halfway aligning the stack. */ |
1662 | cache->base = ((cache->saved_sp - 4) & 0xfffffff0) - 4; | |
1663 | cache->saved_regs[I386_EIP_REGNUM] = cache->saved_sp - 4; | |
1664 | ||
1665 | /* This will be added back below. */ | |
1666 | cache->saved_regs[I386_EIP_REGNUM] -= cache->base; | |
1667 | } | |
7618e12b DJ |
1668 | else if (cache->pc != 0 |
1669 | || target_read_memory (get_frame_pc (this_frame), buf, 1)) | |
92dd43fa | 1670 | { |
7618e12b DJ |
1671 | /* We're in a known function, but did not find a frame |
1672 | setup. Assume that the function does not use %ebp. | |
1673 | Alternatively, we may have jumped to an invalid | |
1674 | address; in that case there is definitely no new | |
1675 | frame in %ebp. */ | |
10458914 | 1676 | get_frame_register (this_frame, I386_ESP_REGNUM, buf); |
e17a4113 UW |
1677 | cache->base = extract_unsigned_integer (buf, 4, byte_order) |
1678 | + cache->sp_offset; | |
92dd43fa | 1679 | } |
7618e12b DJ |
1680 | else |
1681 | /* We're in an unknown function. We could not find the start | |
1682 | of the function to analyze the prologue; our best option is | |
1683 | to assume a typical frame layout with the caller's %ebp | |
1684 | saved. */ | |
1685 | cache->saved_regs[I386_EBP_REGNUM] = 0; | |
acd5c798 MK |
1686 | } |
1687 | ||
8fbca658 PA |
1688 | if (cache->saved_sp_reg != -1) |
1689 | { | |
1690 | /* Saved stack pointer has been saved (but the SAVED_SP_REG | |
1691 | register may be unavailable). */ | |
1692 | if (cache->saved_sp == 0 | |
1693 | && frame_register_read (this_frame, cache->saved_sp_reg, buf)) | |
1694 | cache->saved_sp = extract_unsigned_integer (buf, 4, byte_order); | |
1695 | } | |
acd5c798 MK |
1696 | /* Now that we have the base address for the stack frame we can |
1697 | calculate the value of %esp in the calling frame. */ | |
8fbca658 | 1698 | else if (cache->saved_sp == 0) |
92dd43fa | 1699 | cache->saved_sp = cache->base + 8; |
a7769679 | 1700 | |
acd5c798 MK |
1701 | /* Adjust all the saved registers such that they contain addresses |
1702 | instead of offsets. */ | |
1703 | for (i = 0; i < I386_NUM_SAVED_REGS; i++) | |
fd13a04a AC |
1704 | if (cache->saved_regs[i] != -1) |
1705 | cache->saved_regs[i] += cache->base; | |
acd5c798 | 1706 | |
8fbca658 PA |
1707 | cache->base_p = 1; |
1708 | } | |
1709 | ||
1710 | static struct i386_frame_cache * | |
1711 | i386_frame_cache (struct frame_info *this_frame, void **this_cache) | |
1712 | { | |
1713 | volatile struct gdb_exception ex; | |
1714 | struct i386_frame_cache *cache; | |
1715 | ||
1716 | if (*this_cache) | |
1717 | return *this_cache; | |
1718 | ||
1719 | cache = i386_alloc_frame_cache (); | |
1720 | *this_cache = cache; | |
1721 | ||
1722 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1723 | { | |
1724 | i386_frame_cache_1 (this_frame, cache); | |
1725 | } | |
1726 | if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR) | |
1727 | throw_exception (ex); | |
1728 | ||
acd5c798 | 1729 | return cache; |
a7769679 MK |
1730 | } |
1731 | ||
3a1e71e3 | 1732 | static void |
10458914 | 1733 | i386_frame_this_id (struct frame_info *this_frame, void **this_cache, |
acd5c798 | 1734 | struct frame_id *this_id) |
c906108c | 1735 | { |
10458914 | 1736 | struct i386_frame_cache *cache = i386_frame_cache (this_frame, this_cache); |
acd5c798 MK |
1737 | |
1738 | /* This marks the outermost frame. */ | |
1739 | if (cache->base == 0) | |
1740 | return; | |
1741 | ||
3e210248 | 1742 | /* See the end of i386_push_dummy_call. */ |
acd5c798 MK |
1743 | (*this_id) = frame_id_build (cache->base + 8, cache->pc); |
1744 | } | |
1745 | ||
8fbca658 PA |
1746 | static enum unwind_stop_reason |
1747 | i386_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1748 | void **this_cache) | |
1749 | { | |
1750 | struct i386_frame_cache *cache = i386_frame_cache (this_frame, this_cache); | |
1751 | ||
1752 | if (!cache->base_p) | |
1753 | return UNWIND_UNAVAILABLE; | |
1754 | ||
1755 | /* This marks the outermost frame. */ | |
1756 | if (cache->base == 0) | |
1757 | return UNWIND_OUTERMOST; | |
1758 | ||
1759 | return UNWIND_NO_REASON; | |
1760 | } | |
1761 | ||
10458914 DJ |
1762 | static struct value * |
1763 | i386_frame_prev_register (struct frame_info *this_frame, void **this_cache, | |
1764 | int regnum) | |
acd5c798 | 1765 | { |
10458914 | 1766 | struct i386_frame_cache *cache = i386_frame_cache (this_frame, this_cache); |
acd5c798 MK |
1767 | |
1768 | gdb_assert (regnum >= 0); | |
1769 | ||
1770 | /* The System V ABI says that: | |
1771 | ||
1772 | "The flags register contains the system flags, such as the | |
1773 | direction flag and the carry flag. The direction flag must be | |
1774 | set to the forward (that is, zero) direction before entry and | |
1775 | upon exit from a function. Other user flags have no specified | |
1776 | role in the standard calling sequence and are not preserved." | |
1777 | ||
1778 | To guarantee the "upon exit" part of that statement we fake a | |
1779 | saved flags register that has its direction flag cleared. | |
1780 | ||
1781 | Note that GCC doesn't seem to rely on the fact that the direction | |
1782 | flag is cleared after a function return; it always explicitly | |
1783 | clears the flag before operations where it matters. | |
1784 | ||
1785 | FIXME: kettenis/20030316: I'm not quite sure whether this is the | |
1786 | right thing to do. The way we fake the flags register here makes | |
1787 | it impossible to change it. */ | |
1788 | ||
1789 | if (regnum == I386_EFLAGS_REGNUM) | |
1790 | { | |
10458914 | 1791 | ULONGEST val; |
c5aa993b | 1792 | |
10458914 DJ |
1793 | val = get_frame_register_unsigned (this_frame, regnum); |
1794 | val &= ~(1 << 10); | |
1795 | return frame_unwind_got_constant (this_frame, regnum, val); | |
acd5c798 | 1796 | } |
1211c4e4 | 1797 | |
acd5c798 | 1798 | if (regnum == I386_EIP_REGNUM && cache->pc_in_eax) |
10458914 | 1799 | return frame_unwind_got_register (this_frame, regnum, I386_EAX_REGNUM); |
acd5c798 | 1800 | |
8fbca658 PA |
1801 | if (regnum == I386_ESP_REGNUM) |
1802 | { | |
1803 | /* If the SP has been saved, but we don't know where, then this | |
1804 | means that SAVED_SP_REG register was found unavailable back | |
1805 | when we built the cache. */ | |
1806 | if (cache->saved_sp == 0 && cache->saved_sp_reg != -1) | |
1807 | return frame_unwind_got_register (this_frame, regnum, | |
1808 | cache->saved_sp_reg); | |
1809 | else | |
1810 | return frame_unwind_got_constant (this_frame, regnum, | |
1811 | cache->saved_sp); | |
1812 | } | |
acd5c798 | 1813 | |
fd13a04a | 1814 | if (regnum < I386_NUM_SAVED_REGS && cache->saved_regs[regnum] != -1) |
10458914 DJ |
1815 | return frame_unwind_got_memory (this_frame, regnum, |
1816 | cache->saved_regs[regnum]); | |
fd13a04a | 1817 | |
10458914 | 1818 | return frame_unwind_got_register (this_frame, regnum, regnum); |
acd5c798 MK |
1819 | } |
1820 | ||
1821 | static const struct frame_unwind i386_frame_unwind = | |
1822 | { | |
1823 | NORMAL_FRAME, | |
8fbca658 | 1824 | i386_frame_unwind_stop_reason, |
acd5c798 | 1825 | i386_frame_this_id, |
10458914 DJ |
1826 | i386_frame_prev_register, |
1827 | NULL, | |
1828 | default_frame_sniffer | |
acd5c798 | 1829 | }; |
06da04c6 MS |
1830 | |
1831 | /* Normal frames, but in a function epilogue. */ | |
1832 | ||
1833 | /* The epilogue is defined here as the 'ret' instruction, which will | |
1834 | follow any instruction such as 'leave' or 'pop %ebp' that destroys | |
1835 | the function's stack frame. */ | |
1836 | ||
1837 | static int | |
1838 | i386_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) | |
1839 | { | |
1840 | gdb_byte insn; | |
1841 | ||
1842 | if (target_read_memory (pc, &insn, 1)) | |
1843 | return 0; /* Can't read memory at pc. */ | |
1844 | ||
1845 | if (insn != 0xc3) /* 'ret' instruction. */ | |
1846 | return 0; | |
1847 | ||
1848 | return 1; | |
1849 | } | |
1850 | ||
1851 | static int | |
1852 | i386_epilogue_frame_sniffer (const struct frame_unwind *self, | |
1853 | struct frame_info *this_frame, | |
1854 | void **this_prologue_cache) | |
1855 | { | |
1856 | if (frame_relative_level (this_frame) == 0) | |
1857 | return i386_in_function_epilogue_p (get_frame_arch (this_frame), | |
1858 | get_frame_pc (this_frame)); | |
1859 | else | |
1860 | return 0; | |
1861 | } | |
1862 | ||
1863 | static struct i386_frame_cache * | |
1864 | i386_epilogue_frame_cache (struct frame_info *this_frame, void **this_cache) | |
1865 | { | |
1866 | struct gdbarch *gdbarch = get_frame_arch (this_frame); | |
1867 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8fbca658 | 1868 | volatile struct gdb_exception ex; |
06da04c6 MS |
1869 | struct i386_frame_cache *cache; |
1870 | gdb_byte buf[4]; | |
1871 | ||
1872 | if (*this_cache) | |
1873 | return *this_cache; | |
1874 | ||
1875 | cache = i386_alloc_frame_cache (); | |
1876 | *this_cache = cache; | |
1877 | ||
8fbca658 PA |
1878 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
1879 | { | |
1880 | /* Cache base will be %esp plus cache->sp_offset (-4). */ | |
1881 | get_frame_register (this_frame, I386_ESP_REGNUM, buf); | |
1882 | cache->base = extract_unsigned_integer (buf, 4, | |
1883 | byte_order) + cache->sp_offset; | |
1884 | ||
1885 | /* Cache pc will be the frame func. */ | |
1886 | cache->pc = get_frame_pc (this_frame); | |
06da04c6 | 1887 | |
8fbca658 PA |
1888 | /* The saved %esp will be at cache->base plus 8. */ |
1889 | cache->saved_sp = cache->base + 8; | |
06da04c6 | 1890 | |
8fbca658 PA |
1891 | /* The saved %eip will be at cache->base plus 4. */ |
1892 | cache->saved_regs[I386_EIP_REGNUM] = cache->base + 4; | |
06da04c6 | 1893 | |
8fbca658 PA |
1894 | cache->base_p = 1; |
1895 | } | |
1896 | if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR) | |
1897 | throw_exception (ex); | |
06da04c6 MS |
1898 | |
1899 | return cache; | |
1900 | } | |
1901 | ||
8fbca658 PA |
1902 | static enum unwind_stop_reason |
1903 | i386_epilogue_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1904 | void **this_cache) | |
1905 | { | |
1906 | struct i386_frame_cache *cache | |
1907 | = i386_epilogue_frame_cache (this_frame, this_cache); | |
1908 | ||
1909 | if (!cache->base_p) | |
1910 | return UNWIND_UNAVAILABLE; | |
1911 | ||
1912 | return UNWIND_NO_REASON; | |
1913 | } | |
1914 | ||
06da04c6 MS |
1915 | static void |
1916 | i386_epilogue_frame_this_id (struct frame_info *this_frame, | |
1917 | void **this_cache, | |
1918 | struct frame_id *this_id) | |
1919 | { | |
1920 | struct i386_frame_cache *cache = i386_epilogue_frame_cache (this_frame, | |
1921 | this_cache); | |
1922 | ||
8fbca658 PA |
1923 | if (!cache->base_p) |
1924 | return; | |
1925 | ||
06da04c6 MS |
1926 | (*this_id) = frame_id_build (cache->base + 8, cache->pc); |
1927 | } | |
1928 | ||
1929 | static const struct frame_unwind i386_epilogue_frame_unwind = | |
1930 | { | |
1931 | NORMAL_FRAME, | |
8fbca658 | 1932 | i386_epilogue_frame_unwind_stop_reason, |
06da04c6 MS |
1933 | i386_epilogue_frame_this_id, |
1934 | i386_frame_prev_register, | |
1935 | NULL, | |
1936 | i386_epilogue_frame_sniffer | |
1937 | }; | |
acd5c798 MK |
1938 | \f |
1939 | ||
1940 | /* Signal trampolines. */ | |
1941 | ||
1942 | static struct i386_frame_cache * | |
10458914 | 1943 | i386_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache) |
acd5c798 | 1944 | { |
e17a4113 UW |
1945 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
1946 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
1947 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8fbca658 | 1948 | volatile struct gdb_exception ex; |
acd5c798 | 1949 | struct i386_frame_cache *cache; |
acd5c798 | 1950 | CORE_ADDR addr; |
63c0089f | 1951 | gdb_byte buf[4]; |
acd5c798 MK |
1952 | |
1953 | if (*this_cache) | |
1954 | return *this_cache; | |
1955 | ||
fd13a04a | 1956 | cache = i386_alloc_frame_cache (); |
acd5c798 | 1957 | |
8fbca658 | 1958 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
a3386186 | 1959 | { |
8fbca658 PA |
1960 | get_frame_register (this_frame, I386_ESP_REGNUM, buf); |
1961 | cache->base = extract_unsigned_integer (buf, 4, byte_order) - 4; | |
a3386186 | 1962 | |
8fbca658 PA |
1963 | addr = tdep->sigcontext_addr (this_frame); |
1964 | if (tdep->sc_reg_offset) | |
1965 | { | |
1966 | int i; | |
a3386186 | 1967 | |
8fbca658 PA |
1968 | gdb_assert (tdep->sc_num_regs <= I386_NUM_SAVED_REGS); |
1969 | ||
1970 | for (i = 0; i < tdep->sc_num_regs; i++) | |
1971 | if (tdep->sc_reg_offset[i] != -1) | |
1972 | cache->saved_regs[i] = addr + tdep->sc_reg_offset[i]; | |
1973 | } | |
1974 | else | |
1975 | { | |
1976 | cache->saved_regs[I386_EIP_REGNUM] = addr + tdep->sc_pc_offset; | |
1977 | cache->saved_regs[I386_ESP_REGNUM] = addr + tdep->sc_sp_offset; | |
1978 | } | |
1979 | ||
1980 | cache->base_p = 1; | |
a3386186 | 1981 | } |
8fbca658 PA |
1982 | if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR) |
1983 | throw_exception (ex); | |
acd5c798 MK |
1984 | |
1985 | *this_cache = cache; | |
1986 | return cache; | |
1987 | } | |
1988 | ||
8fbca658 PA |
1989 | static enum unwind_stop_reason |
1990 | i386_sigtramp_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1991 | void **this_cache) | |
1992 | { | |
1993 | struct i386_frame_cache *cache = | |
1994 | i386_sigtramp_frame_cache (this_frame, this_cache); | |
1995 | ||
1996 | if (!cache->base_p) | |
1997 | return UNWIND_UNAVAILABLE; | |
1998 | ||
1999 | return UNWIND_NO_REASON; | |
2000 | } | |
2001 | ||
acd5c798 | 2002 | static void |
10458914 | 2003 | i386_sigtramp_frame_this_id (struct frame_info *this_frame, void **this_cache, |
acd5c798 MK |
2004 | struct frame_id *this_id) |
2005 | { | |
2006 | struct i386_frame_cache *cache = | |
10458914 | 2007 | i386_sigtramp_frame_cache (this_frame, this_cache); |
acd5c798 | 2008 | |
8fbca658 PA |
2009 | if (!cache->base_p) |
2010 | return; | |
2011 | ||
3e210248 | 2012 | /* See the end of i386_push_dummy_call. */ |
10458914 | 2013 | (*this_id) = frame_id_build (cache->base + 8, get_frame_pc (this_frame)); |
acd5c798 MK |
2014 | } |
2015 | ||
10458914 DJ |
2016 | static struct value * |
2017 | i386_sigtramp_frame_prev_register (struct frame_info *this_frame, | |
2018 | void **this_cache, int regnum) | |
acd5c798 MK |
2019 | { |
2020 | /* Make sure we've initialized the cache. */ | |
10458914 | 2021 | i386_sigtramp_frame_cache (this_frame, this_cache); |
acd5c798 | 2022 | |
10458914 | 2023 | return i386_frame_prev_register (this_frame, this_cache, regnum); |
c906108c | 2024 | } |
c0d1d883 | 2025 | |
10458914 DJ |
2026 | static int |
2027 | i386_sigtramp_frame_sniffer (const struct frame_unwind *self, | |
2028 | struct frame_info *this_frame, | |
2029 | void **this_prologue_cache) | |
acd5c798 | 2030 | { |
10458914 | 2031 | struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame)); |
acd5c798 | 2032 | |
911bc6ee MK |
2033 | /* We shouldn't even bother if we don't have a sigcontext_addr |
2034 | handler. */ | |
2035 | if (tdep->sigcontext_addr == NULL) | |
10458914 | 2036 | return 0; |
1c3545ae | 2037 | |
911bc6ee MK |
2038 | if (tdep->sigtramp_p != NULL) |
2039 | { | |
10458914 DJ |
2040 | if (tdep->sigtramp_p (this_frame)) |
2041 | return 1; | |
911bc6ee MK |
2042 | } |
2043 | ||
2044 | if (tdep->sigtramp_start != 0) | |
2045 | { | |
10458914 | 2046 | CORE_ADDR pc = get_frame_pc (this_frame); |
911bc6ee MK |
2047 | |
2048 | gdb_assert (tdep->sigtramp_end != 0); | |
2049 | if (pc >= tdep->sigtramp_start && pc < tdep->sigtramp_end) | |
10458914 | 2050 | return 1; |
911bc6ee | 2051 | } |
acd5c798 | 2052 | |
10458914 | 2053 | return 0; |
acd5c798 | 2054 | } |
10458914 DJ |
2055 | |
2056 | static const struct frame_unwind i386_sigtramp_frame_unwind = | |
2057 | { | |
2058 | SIGTRAMP_FRAME, | |
8fbca658 | 2059 | i386_sigtramp_frame_unwind_stop_reason, |
10458914 DJ |
2060 | i386_sigtramp_frame_this_id, |
2061 | i386_sigtramp_frame_prev_register, | |
2062 | NULL, | |
2063 | i386_sigtramp_frame_sniffer | |
2064 | }; | |
acd5c798 MK |
2065 | \f |
2066 | ||
2067 | static CORE_ADDR | |
10458914 | 2068 | i386_frame_base_address (struct frame_info *this_frame, void **this_cache) |
acd5c798 | 2069 | { |
10458914 | 2070 | struct i386_frame_cache *cache = i386_frame_cache (this_frame, this_cache); |
acd5c798 MK |
2071 | |
2072 | return cache->base; | |
2073 | } | |
2074 | ||
2075 | static const struct frame_base i386_frame_base = | |
2076 | { | |
2077 | &i386_frame_unwind, | |
2078 | i386_frame_base_address, | |
2079 | i386_frame_base_address, | |
2080 | i386_frame_base_address | |
2081 | }; | |
2082 | ||
acd5c798 | 2083 | static struct frame_id |
10458914 | 2084 | i386_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) |
acd5c798 | 2085 | { |
acd5c798 MK |
2086 | CORE_ADDR fp; |
2087 | ||
10458914 | 2088 | fp = get_frame_register_unsigned (this_frame, I386_EBP_REGNUM); |
acd5c798 | 2089 | |
3e210248 | 2090 | /* See the end of i386_push_dummy_call. */ |
10458914 | 2091 | return frame_id_build (fp + 8, get_frame_pc (this_frame)); |
c0d1d883 | 2092 | } |
fc338970 | 2093 | \f |
c906108c | 2094 | |
fc338970 MK |
2095 | /* Figure out where the longjmp will land. Slurp the args out of the |
2096 | stack. We expect the first arg to be a pointer to the jmp_buf | |
8201327c | 2097 | structure from which we extract the address that we will land at. |
28bcfd30 | 2098 | This address is copied into PC. This routine returns non-zero on |
436675d3 | 2099 | success. */ |
c906108c | 2100 | |
8201327c | 2101 | static int |
60ade65d | 2102 | i386_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc) |
c906108c | 2103 | { |
436675d3 | 2104 | gdb_byte buf[4]; |
c906108c | 2105 | CORE_ADDR sp, jb_addr; |
20a6ec49 | 2106 | struct gdbarch *gdbarch = get_frame_arch (frame); |
e17a4113 | 2107 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
20a6ec49 | 2108 | int jb_pc_offset = gdbarch_tdep (gdbarch)->jb_pc_offset; |
c906108c | 2109 | |
8201327c MK |
2110 | /* If JB_PC_OFFSET is -1, we have no way to find out where the |
2111 | longjmp will land. */ | |
2112 | if (jb_pc_offset == -1) | |
c906108c SS |
2113 | return 0; |
2114 | ||
436675d3 | 2115 | get_frame_register (frame, I386_ESP_REGNUM, buf); |
e17a4113 | 2116 | sp = extract_unsigned_integer (buf, 4, byte_order); |
436675d3 | 2117 | if (target_read_memory (sp + 4, buf, 4)) |
c906108c SS |
2118 | return 0; |
2119 | ||
e17a4113 | 2120 | jb_addr = extract_unsigned_integer (buf, 4, byte_order); |
436675d3 | 2121 | if (target_read_memory (jb_addr + jb_pc_offset, buf, 4)) |
8201327c | 2122 | return 0; |
c906108c | 2123 | |
e17a4113 | 2124 | *pc = extract_unsigned_integer (buf, 4, byte_order); |
c906108c SS |
2125 | return 1; |
2126 | } | |
fc338970 | 2127 | \f |
c906108c | 2128 | |
7ccc1c74 JM |
2129 | /* Check whether TYPE must be 16-byte-aligned when passed as a |
2130 | function argument. 16-byte vectors, _Decimal128 and structures or | |
2131 | unions containing such types must be 16-byte-aligned; other | |
2132 | arguments are 4-byte-aligned. */ | |
2133 | ||
2134 | static int | |
2135 | i386_16_byte_align_p (struct type *type) | |
2136 | { | |
2137 | type = check_typedef (type); | |
2138 | if ((TYPE_CODE (type) == TYPE_CODE_DECFLOAT | |
2139 | || (TYPE_CODE (type) == TYPE_CODE_ARRAY && TYPE_VECTOR (type))) | |
2140 | && TYPE_LENGTH (type) == 16) | |
2141 | return 1; | |
2142 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2143 | return i386_16_byte_align_p (TYPE_TARGET_TYPE (type)); | |
2144 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
2145 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
2146 | { | |
2147 | int i; | |
2148 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
2149 | { | |
2150 | if (i386_16_byte_align_p (TYPE_FIELD_TYPE (type, i))) | |
2151 | return 1; | |
2152 | } | |
2153 | } | |
2154 | return 0; | |
2155 | } | |
2156 | ||
3a1e71e3 | 2157 | static CORE_ADDR |
7d9b040b | 2158 | i386_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
6a65450a AC |
2159 | struct regcache *regcache, CORE_ADDR bp_addr, int nargs, |
2160 | struct value **args, CORE_ADDR sp, int struct_return, | |
2161 | CORE_ADDR struct_addr) | |
22f8ba57 | 2162 | { |
e17a4113 | 2163 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
63c0089f | 2164 | gdb_byte buf[4]; |
acd5c798 | 2165 | int i; |
7ccc1c74 JM |
2166 | int write_pass; |
2167 | int args_space = 0; | |
acd5c798 | 2168 | |
7ccc1c74 JM |
2169 | /* Determine the total space required for arguments and struct |
2170 | return address in a first pass (allowing for 16-byte-aligned | |
2171 | arguments), then push arguments in a second pass. */ | |
2172 | ||
2173 | for (write_pass = 0; write_pass < 2; write_pass++) | |
22f8ba57 | 2174 | { |
7ccc1c74 JM |
2175 | int args_space_used = 0; |
2176 | int have_16_byte_aligned_arg = 0; | |
2177 | ||
2178 | if (struct_return) | |
2179 | { | |
2180 | if (write_pass) | |
2181 | { | |
2182 | /* Push value address. */ | |
e17a4113 | 2183 | store_unsigned_integer (buf, 4, byte_order, struct_addr); |
7ccc1c74 JM |
2184 | write_memory (sp, buf, 4); |
2185 | args_space_used += 4; | |
2186 | } | |
2187 | else | |
2188 | args_space += 4; | |
2189 | } | |
2190 | ||
2191 | for (i = 0; i < nargs; i++) | |
2192 | { | |
2193 | int len = TYPE_LENGTH (value_enclosing_type (args[i])); | |
acd5c798 | 2194 | |
7ccc1c74 JM |
2195 | if (write_pass) |
2196 | { | |
2197 | if (i386_16_byte_align_p (value_enclosing_type (args[i]))) | |
2198 | args_space_used = align_up (args_space_used, 16); | |
acd5c798 | 2199 | |
7ccc1c74 JM |
2200 | write_memory (sp + args_space_used, |
2201 | value_contents_all (args[i]), len); | |
2202 | /* The System V ABI says that: | |
acd5c798 | 2203 | |
7ccc1c74 JM |
2204 | "An argument's size is increased, if necessary, to make it a |
2205 | multiple of [32-bit] words. This may require tail padding, | |
2206 | depending on the size of the argument." | |
22f8ba57 | 2207 | |
7ccc1c74 JM |
2208 | This makes sure the stack stays word-aligned. */ |
2209 | args_space_used += align_up (len, 4); | |
2210 | } | |
2211 | else | |
2212 | { | |
2213 | if (i386_16_byte_align_p (value_enclosing_type (args[i]))) | |
2214 | { | |
2215 | args_space = align_up (args_space, 16); | |
2216 | have_16_byte_aligned_arg = 1; | |
2217 | } | |
2218 | args_space += align_up (len, 4); | |
2219 | } | |
2220 | } | |
2221 | ||
2222 | if (!write_pass) | |
2223 | { | |
2224 | if (have_16_byte_aligned_arg) | |
2225 | args_space = align_up (args_space, 16); | |
2226 | sp -= args_space; | |
2227 | } | |
22f8ba57 MK |
2228 | } |
2229 | ||
acd5c798 MK |
2230 | /* Store return address. */ |
2231 | sp -= 4; | |
e17a4113 | 2232 | store_unsigned_integer (buf, 4, byte_order, bp_addr); |
acd5c798 MK |
2233 | write_memory (sp, buf, 4); |
2234 | ||
2235 | /* Finally, update the stack pointer... */ | |
e17a4113 | 2236 | store_unsigned_integer (buf, 4, byte_order, sp); |
acd5c798 MK |
2237 | regcache_cooked_write (regcache, I386_ESP_REGNUM, buf); |
2238 | ||
2239 | /* ...and fake a frame pointer. */ | |
2240 | regcache_cooked_write (regcache, I386_EBP_REGNUM, buf); | |
2241 | ||
3e210248 AC |
2242 | /* MarkK wrote: This "+ 8" is all over the place: |
2243 | (i386_frame_this_id, i386_sigtramp_frame_this_id, | |
10458914 | 2244 | i386_dummy_id). It's there, since all frame unwinders for |
3e210248 | 2245 | a given target have to agree (within a certain margin) on the |
a45ae3ed UW |
2246 | definition of the stack address of a frame. Otherwise frame id |
2247 | comparison might not work correctly. Since DWARF2/GCC uses the | |
3e210248 AC |
2248 | stack address *before* the function call as a frame's CFA. On |
2249 | the i386, when %ebp is used as a frame pointer, the offset | |
2250 | between the contents %ebp and the CFA as defined by GCC. */ | |
2251 | return sp + 8; | |
22f8ba57 MK |
2252 | } |
2253 | ||
1a309862 MK |
2254 | /* These registers are used for returning integers (and on some |
2255 | targets also for returning `struct' and `union' values when their | |
ef9dff19 | 2256 | size and alignment match an integer type). */ |
acd5c798 MK |
2257 | #define LOW_RETURN_REGNUM I386_EAX_REGNUM /* %eax */ |
2258 | #define HIGH_RETURN_REGNUM I386_EDX_REGNUM /* %edx */ | |
1a309862 | 2259 | |
c5e656c1 MK |
2260 | /* Read, for architecture GDBARCH, a function return value of TYPE |
2261 | from REGCACHE, and copy that into VALBUF. */ | |
1a309862 | 2262 | |
3a1e71e3 | 2263 | static void |
c5e656c1 | 2264 | i386_extract_return_value (struct gdbarch *gdbarch, struct type *type, |
63c0089f | 2265 | struct regcache *regcache, gdb_byte *valbuf) |
c906108c | 2266 | { |
c5e656c1 | 2267 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
1a309862 | 2268 | int len = TYPE_LENGTH (type); |
63c0089f | 2269 | gdb_byte buf[I386_MAX_REGISTER_SIZE]; |
1a309862 | 2270 | |
1e8d0a7b | 2271 | if (TYPE_CODE (type) == TYPE_CODE_FLT) |
c906108c | 2272 | { |
5716833c | 2273 | if (tdep->st0_regnum < 0) |
1a309862 | 2274 | { |
8a3fe4f8 | 2275 | warning (_("Cannot find floating-point return value.")); |
1a309862 | 2276 | memset (valbuf, 0, len); |
ef9dff19 | 2277 | return; |
1a309862 MK |
2278 | } |
2279 | ||
c6ba6f0d MK |
2280 | /* Floating-point return values can be found in %st(0). Convert |
2281 | its contents to the desired type. This is probably not | |
2282 | exactly how it would happen on the target itself, but it is | |
2283 | the best we can do. */ | |
acd5c798 | 2284 | regcache_raw_read (regcache, I386_ST0_REGNUM, buf); |
27067745 | 2285 | convert_typed_floating (buf, i387_ext_type (gdbarch), valbuf, type); |
c906108c SS |
2286 | } |
2287 | else | |
c5aa993b | 2288 | { |
875f8d0e UW |
2289 | int low_size = register_size (gdbarch, LOW_RETURN_REGNUM); |
2290 | int high_size = register_size (gdbarch, HIGH_RETURN_REGNUM); | |
d4f3574e SS |
2291 | |
2292 | if (len <= low_size) | |
00f8375e | 2293 | { |
0818c12a | 2294 | regcache_raw_read (regcache, LOW_RETURN_REGNUM, buf); |
00f8375e MK |
2295 | memcpy (valbuf, buf, len); |
2296 | } | |
d4f3574e SS |
2297 | else if (len <= (low_size + high_size)) |
2298 | { | |
0818c12a | 2299 | regcache_raw_read (regcache, LOW_RETURN_REGNUM, buf); |
00f8375e | 2300 | memcpy (valbuf, buf, low_size); |
0818c12a | 2301 | regcache_raw_read (regcache, HIGH_RETURN_REGNUM, buf); |
63c0089f | 2302 | memcpy (valbuf + low_size, buf, len - low_size); |
d4f3574e SS |
2303 | } |
2304 | else | |
8e65ff28 | 2305 | internal_error (__FILE__, __LINE__, |
1777feb0 MS |
2306 | _("Cannot extract return value of %d bytes long."), |
2307 | len); | |
c906108c SS |
2308 | } |
2309 | } | |
2310 | ||
c5e656c1 MK |
2311 | /* Write, for architecture GDBARCH, a function return value of TYPE |
2312 | from VALBUF into REGCACHE. */ | |
ef9dff19 | 2313 | |
3a1e71e3 | 2314 | static void |
c5e656c1 | 2315 | i386_store_return_value (struct gdbarch *gdbarch, struct type *type, |
63c0089f | 2316 | struct regcache *regcache, const gdb_byte *valbuf) |
ef9dff19 | 2317 | { |
c5e656c1 | 2318 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
ef9dff19 MK |
2319 | int len = TYPE_LENGTH (type); |
2320 | ||
1e8d0a7b | 2321 | if (TYPE_CODE (type) == TYPE_CODE_FLT) |
ef9dff19 | 2322 | { |
3d7f4f49 | 2323 | ULONGEST fstat; |
63c0089f | 2324 | gdb_byte buf[I386_MAX_REGISTER_SIZE]; |
ccb945b8 | 2325 | |
5716833c | 2326 | if (tdep->st0_regnum < 0) |
ef9dff19 | 2327 | { |
8a3fe4f8 | 2328 | warning (_("Cannot set floating-point return value.")); |
ef9dff19 MK |
2329 | return; |
2330 | } | |
2331 | ||
635b0cc1 MK |
2332 | /* Returning floating-point values is a bit tricky. Apart from |
2333 | storing the return value in %st(0), we have to simulate the | |
2334 | state of the FPU at function return point. */ | |
2335 | ||
c6ba6f0d MK |
2336 | /* Convert the value found in VALBUF to the extended |
2337 | floating-point format used by the FPU. This is probably | |
2338 | not exactly how it would happen on the target itself, but | |
2339 | it is the best we can do. */ | |
27067745 | 2340 | convert_typed_floating (valbuf, type, buf, i387_ext_type (gdbarch)); |
acd5c798 | 2341 | regcache_raw_write (regcache, I386_ST0_REGNUM, buf); |
ccb945b8 | 2342 | |
635b0cc1 MK |
2343 | /* Set the top of the floating-point register stack to 7. The |
2344 | actual value doesn't really matter, but 7 is what a normal | |
2345 | function return would end up with if the program started out | |
2346 | with a freshly initialized FPU. */ | |
20a6ec49 | 2347 | regcache_raw_read_unsigned (regcache, I387_FSTAT_REGNUM (tdep), &fstat); |
ccb945b8 | 2348 | fstat |= (7 << 11); |
20a6ec49 | 2349 | regcache_raw_write_unsigned (regcache, I387_FSTAT_REGNUM (tdep), fstat); |
ccb945b8 | 2350 | |
635b0cc1 MK |
2351 | /* Mark %st(1) through %st(7) as empty. Since we set the top of |
2352 | the floating-point register stack to 7, the appropriate value | |
2353 | for the tag word is 0x3fff. */ | |
20a6ec49 | 2354 | regcache_raw_write_unsigned (regcache, I387_FTAG_REGNUM (tdep), 0x3fff); |
ef9dff19 MK |
2355 | } |
2356 | else | |
2357 | { | |
875f8d0e UW |
2358 | int low_size = register_size (gdbarch, LOW_RETURN_REGNUM); |
2359 | int high_size = register_size (gdbarch, HIGH_RETURN_REGNUM); | |
ef9dff19 MK |
2360 | |
2361 | if (len <= low_size) | |
3d7f4f49 | 2362 | regcache_raw_write_part (regcache, LOW_RETURN_REGNUM, 0, len, valbuf); |
ef9dff19 MK |
2363 | else if (len <= (low_size + high_size)) |
2364 | { | |
3d7f4f49 MK |
2365 | regcache_raw_write (regcache, LOW_RETURN_REGNUM, valbuf); |
2366 | regcache_raw_write_part (regcache, HIGH_RETURN_REGNUM, 0, | |
63c0089f | 2367 | len - low_size, valbuf + low_size); |
ef9dff19 MK |
2368 | } |
2369 | else | |
8e65ff28 | 2370 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2371 | _("Cannot store return value of %d bytes long."), len); |
ef9dff19 MK |
2372 | } |
2373 | } | |
fc338970 | 2374 | \f |
ef9dff19 | 2375 | |
8201327c MK |
2376 | /* This is the variable that is set with "set struct-convention", and |
2377 | its legitimate values. */ | |
2378 | static const char default_struct_convention[] = "default"; | |
2379 | static const char pcc_struct_convention[] = "pcc"; | |
2380 | static const char reg_struct_convention[] = "reg"; | |
2381 | static const char *valid_conventions[] = | |
2382 | { | |
2383 | default_struct_convention, | |
2384 | pcc_struct_convention, | |
2385 | reg_struct_convention, | |
2386 | NULL | |
2387 | }; | |
2388 | static const char *struct_convention = default_struct_convention; | |
2389 | ||
0e4377e1 JB |
2390 | /* Return non-zero if TYPE, which is assumed to be a structure, |
2391 | a union type, or an array type, should be returned in registers | |
2392 | for architecture GDBARCH. */ | |
c5e656c1 | 2393 | |
8201327c | 2394 | static int |
c5e656c1 | 2395 | i386_reg_struct_return_p (struct gdbarch *gdbarch, struct type *type) |
8201327c | 2396 | { |
c5e656c1 MK |
2397 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
2398 | enum type_code code = TYPE_CODE (type); | |
2399 | int len = TYPE_LENGTH (type); | |
8201327c | 2400 | |
0e4377e1 JB |
2401 | gdb_assert (code == TYPE_CODE_STRUCT |
2402 | || code == TYPE_CODE_UNION | |
2403 | || code == TYPE_CODE_ARRAY); | |
c5e656c1 MK |
2404 | |
2405 | if (struct_convention == pcc_struct_convention | |
2406 | || (struct_convention == default_struct_convention | |
2407 | && tdep->struct_return == pcc_struct_return)) | |
2408 | return 0; | |
2409 | ||
9edde48e MK |
2410 | /* Structures consisting of a single `float', `double' or 'long |
2411 | double' member are returned in %st(0). */ | |
2412 | if (code == TYPE_CODE_STRUCT && TYPE_NFIELDS (type) == 1) | |
2413 | { | |
2414 | type = check_typedef (TYPE_FIELD_TYPE (type, 0)); | |
2415 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
2416 | return (len == 4 || len == 8 || len == 12); | |
2417 | } | |
2418 | ||
c5e656c1 MK |
2419 | return (len == 1 || len == 2 || len == 4 || len == 8); |
2420 | } | |
2421 | ||
2422 | /* Determine, for architecture GDBARCH, how a return value of TYPE | |
2423 | should be returned. If it is supposed to be returned in registers, | |
2424 | and READBUF is non-zero, read the appropriate value from REGCACHE, | |
2425 | and copy it into READBUF. If WRITEBUF is non-zero, write the value | |
2426 | from WRITEBUF into REGCACHE. */ | |
2427 | ||
2428 | static enum return_value_convention | |
c055b101 CV |
2429 | i386_return_value (struct gdbarch *gdbarch, struct type *func_type, |
2430 | struct type *type, struct regcache *regcache, | |
2431 | gdb_byte *readbuf, const gdb_byte *writebuf) | |
c5e656c1 MK |
2432 | { |
2433 | enum type_code code = TYPE_CODE (type); | |
2434 | ||
5daa78cc TJB |
2435 | if (((code == TYPE_CODE_STRUCT |
2436 | || code == TYPE_CODE_UNION | |
2437 | || code == TYPE_CODE_ARRAY) | |
2438 | && !i386_reg_struct_return_p (gdbarch, type)) | |
2439 | /* 128-bit decimal float uses the struct return convention. */ | |
2440 | || (code == TYPE_CODE_DECFLOAT && TYPE_LENGTH (type) == 16)) | |
31db7b6c MK |
2441 | { |
2442 | /* The System V ABI says that: | |
2443 | ||
2444 | "A function that returns a structure or union also sets %eax | |
2445 | to the value of the original address of the caller's area | |
2446 | before it returns. Thus when the caller receives control | |
2447 | again, the address of the returned object resides in register | |
2448 | %eax and can be used to access the object." | |
2449 | ||
2450 | So the ABI guarantees that we can always find the return | |
2451 | value just after the function has returned. */ | |
2452 | ||
0e4377e1 JB |
2453 | /* Note that the ABI doesn't mention functions returning arrays, |
2454 | which is something possible in certain languages such as Ada. | |
2455 | In this case, the value is returned as if it was wrapped in | |
2456 | a record, so the convention applied to records also applies | |
2457 | to arrays. */ | |
2458 | ||
31db7b6c MK |
2459 | if (readbuf) |
2460 | { | |
2461 | ULONGEST addr; | |
2462 | ||
2463 | regcache_raw_read_unsigned (regcache, I386_EAX_REGNUM, &addr); | |
2464 | read_memory (addr, readbuf, TYPE_LENGTH (type)); | |
2465 | } | |
2466 | ||
2467 | return RETURN_VALUE_ABI_RETURNS_ADDRESS; | |
2468 | } | |
c5e656c1 MK |
2469 | |
2470 | /* This special case is for structures consisting of a single | |
9edde48e MK |
2471 | `float', `double' or 'long double' member. These structures are |
2472 | returned in %st(0). For these structures, we call ourselves | |
2473 | recursively, changing TYPE into the type of the first member of | |
2474 | the structure. Since that should work for all structures that | |
2475 | have only one member, we don't bother to check the member's type | |
2476 | here. */ | |
c5e656c1 MK |
2477 | if (code == TYPE_CODE_STRUCT && TYPE_NFIELDS (type) == 1) |
2478 | { | |
2479 | type = check_typedef (TYPE_FIELD_TYPE (type, 0)); | |
c055b101 CV |
2480 | return i386_return_value (gdbarch, func_type, type, regcache, |
2481 | readbuf, writebuf); | |
c5e656c1 MK |
2482 | } |
2483 | ||
2484 | if (readbuf) | |
2485 | i386_extract_return_value (gdbarch, type, regcache, readbuf); | |
2486 | if (writebuf) | |
2487 | i386_store_return_value (gdbarch, type, regcache, writebuf); | |
8201327c | 2488 | |
c5e656c1 | 2489 | return RETURN_VALUE_REGISTER_CONVENTION; |
8201327c MK |
2490 | } |
2491 | \f | |
2492 | ||
27067745 UW |
2493 | struct type * |
2494 | i387_ext_type (struct gdbarch *gdbarch) | |
2495 | { | |
2496 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
2497 | ||
2498 | if (!tdep->i387_ext_type) | |
90884b2b L |
2499 | { |
2500 | tdep->i387_ext_type = tdesc_find_type (gdbarch, "i387_ext"); | |
2501 | gdb_assert (tdep->i387_ext_type != NULL); | |
2502 | } | |
27067745 UW |
2503 | |
2504 | return tdep->i387_ext_type; | |
2505 | } | |
2506 | ||
c131fcee L |
2507 | /* Construct vector type for pseudo YMM registers. We can't use |
2508 | tdesc_find_type since YMM isn't described in target description. */ | |
2509 | ||
2510 | static struct type * | |
2511 | i386_ymm_type (struct gdbarch *gdbarch) | |
2512 | { | |
2513 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
2514 | ||
2515 | if (!tdep->i386_ymm_type) | |
2516 | { | |
2517 | const struct builtin_type *bt = builtin_type (gdbarch); | |
2518 | ||
2519 | /* The type we're building is this: */ | |
2520 | #if 0 | |
2521 | union __gdb_builtin_type_vec256i | |
2522 | { | |
2523 | int128_t uint128[2]; | |
2524 | int64_t v2_int64[4]; | |
2525 | int32_t v4_int32[8]; | |
2526 | int16_t v8_int16[16]; | |
2527 | int8_t v16_int8[32]; | |
2528 | double v2_double[4]; | |
2529 | float v4_float[8]; | |
2530 | }; | |
2531 | #endif | |
2532 | ||
2533 | struct type *t; | |
2534 | ||
2535 | t = arch_composite_type (gdbarch, | |
2536 | "__gdb_builtin_type_vec256i", TYPE_CODE_UNION); | |
2537 | append_composite_type_field (t, "v8_float", | |
2538 | init_vector_type (bt->builtin_float, 8)); | |
2539 | append_composite_type_field (t, "v4_double", | |
2540 | init_vector_type (bt->builtin_double, 4)); | |
2541 | append_composite_type_field (t, "v32_int8", | |
2542 | init_vector_type (bt->builtin_int8, 32)); | |
2543 | append_composite_type_field (t, "v16_int16", | |
2544 | init_vector_type (bt->builtin_int16, 16)); | |
2545 | append_composite_type_field (t, "v8_int32", | |
2546 | init_vector_type (bt->builtin_int32, 8)); | |
2547 | append_composite_type_field (t, "v4_int64", | |
2548 | init_vector_type (bt->builtin_int64, 4)); | |
2549 | append_composite_type_field (t, "v2_int128", | |
2550 | init_vector_type (bt->builtin_int128, 2)); | |
2551 | ||
2552 | TYPE_VECTOR (t) = 1; | |
0c5acf93 | 2553 | TYPE_NAME (t) = "builtin_type_vec256i"; |
c131fcee L |
2554 | tdep->i386_ymm_type = t; |
2555 | } | |
2556 | ||
2557 | return tdep->i386_ymm_type; | |
2558 | } | |
2559 | ||
794ac428 | 2560 | /* Construct vector type for MMX registers. */ |
90884b2b | 2561 | static struct type * |
794ac428 UW |
2562 | i386_mmx_type (struct gdbarch *gdbarch) |
2563 | { | |
2564 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
2565 | ||
2566 | if (!tdep->i386_mmx_type) | |
2567 | { | |
df4df182 UW |
2568 | const struct builtin_type *bt = builtin_type (gdbarch); |
2569 | ||
794ac428 UW |
2570 | /* The type we're building is this: */ |
2571 | #if 0 | |
2572 | union __gdb_builtin_type_vec64i | |
2573 | { | |
2574 | int64_t uint64; | |
2575 | int32_t v2_int32[2]; | |
2576 | int16_t v4_int16[4]; | |
2577 | int8_t v8_int8[8]; | |
2578 | }; | |
2579 | #endif | |
2580 | ||
2581 | struct type *t; | |
2582 | ||
e9bb382b UW |
2583 | t = arch_composite_type (gdbarch, |
2584 | "__gdb_builtin_type_vec64i", TYPE_CODE_UNION); | |
df4df182 UW |
2585 | |
2586 | append_composite_type_field (t, "uint64", bt->builtin_int64); | |
794ac428 | 2587 | append_composite_type_field (t, "v2_int32", |
df4df182 | 2588 | init_vector_type (bt->builtin_int32, 2)); |
794ac428 | 2589 | append_composite_type_field (t, "v4_int16", |
df4df182 | 2590 | init_vector_type (bt->builtin_int16, 4)); |
794ac428 | 2591 | append_composite_type_field (t, "v8_int8", |
df4df182 | 2592 | init_vector_type (bt->builtin_int8, 8)); |
794ac428 | 2593 | |
876cecd0 | 2594 | TYPE_VECTOR (t) = 1; |
794ac428 UW |
2595 | TYPE_NAME (t) = "builtin_type_vec64i"; |
2596 | tdep->i386_mmx_type = t; | |
2597 | } | |
2598 | ||
2599 | return tdep->i386_mmx_type; | |
2600 | } | |
2601 | ||
d7a0d72c | 2602 | /* Return the GDB type object for the "standard" data type of data in |
1777feb0 | 2603 | register REGNUM. */ |
d7a0d72c | 2604 | |
3a1e71e3 | 2605 | static struct type * |
90884b2b | 2606 | i386_pseudo_register_type (struct gdbarch *gdbarch, int regnum) |
d7a0d72c | 2607 | { |
1ba53b71 L |
2608 | if (i386_mmx_regnum_p (gdbarch, regnum)) |
2609 | return i386_mmx_type (gdbarch); | |
c131fcee L |
2610 | else if (i386_ymm_regnum_p (gdbarch, regnum)) |
2611 | return i386_ymm_type (gdbarch); | |
1ba53b71 L |
2612 | else |
2613 | { | |
2614 | const struct builtin_type *bt = builtin_type (gdbarch); | |
2615 | if (i386_byte_regnum_p (gdbarch, regnum)) | |
2616 | return bt->builtin_int8; | |
2617 | else if (i386_word_regnum_p (gdbarch, regnum)) | |
2618 | return bt->builtin_int16; | |
2619 | else if (i386_dword_regnum_p (gdbarch, regnum)) | |
2620 | return bt->builtin_int32; | |
2621 | } | |
2622 | ||
2623 | internal_error (__FILE__, __LINE__, _("invalid regnum")); | |
d7a0d72c MK |
2624 | } |
2625 | ||
28fc6740 | 2626 | /* Map a cooked register onto a raw register or memory. For the i386, |
acd5c798 | 2627 | the MMX registers need to be mapped onto floating point registers. */ |
28fc6740 AC |
2628 | |
2629 | static int | |
c86c27af | 2630 | i386_mmx_regnum_to_fp_regnum (struct regcache *regcache, int regnum) |
28fc6740 | 2631 | { |
5716833c MK |
2632 | struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache)); |
2633 | int mmxreg, fpreg; | |
28fc6740 AC |
2634 | ULONGEST fstat; |
2635 | int tos; | |
c86c27af | 2636 | |
5716833c | 2637 | mmxreg = regnum - tdep->mm0_regnum; |
20a6ec49 | 2638 | regcache_raw_read_unsigned (regcache, I387_FSTAT_REGNUM (tdep), &fstat); |
28fc6740 | 2639 | tos = (fstat >> 11) & 0x7; |
5716833c MK |
2640 | fpreg = (mmxreg + tos) % 8; |
2641 | ||
20a6ec49 | 2642 | return (I387_ST0_REGNUM (tdep) + fpreg); |
28fc6740 AC |
2643 | } |
2644 | ||
05d1431c | 2645 | enum register_status |
28fc6740 | 2646 | i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, |
42835c2b | 2647 | int regnum, gdb_byte *buf) |
28fc6740 | 2648 | { |
1ba53b71 | 2649 | gdb_byte raw_buf[MAX_REGISTER_SIZE]; |
05d1431c | 2650 | enum register_status status; |
1ba53b71 | 2651 | |
5716833c | 2652 | if (i386_mmx_regnum_p (gdbarch, regnum)) |
28fc6740 | 2653 | { |
c86c27af MK |
2654 | int fpnum = i386_mmx_regnum_to_fp_regnum (regcache, regnum); |
2655 | ||
28fc6740 | 2656 | /* Extract (always little endian). */ |
05d1431c PA |
2657 | status = regcache_raw_read (regcache, fpnum, raw_buf); |
2658 | if (status != REG_VALID) | |
2659 | return status; | |
1ba53b71 | 2660 | memcpy (buf, raw_buf, register_size (gdbarch, regnum)); |
28fc6740 AC |
2661 | } |
2662 | else | |
1ba53b71 L |
2663 | { |
2664 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
2665 | ||
c131fcee L |
2666 | if (i386_ymm_regnum_p (gdbarch, regnum)) |
2667 | { | |
2668 | regnum -= tdep->ymm0_regnum; | |
2669 | ||
1777feb0 | 2670 | /* Extract (always little endian). Read lower 128bits. */ |
05d1431c PA |
2671 | status = regcache_raw_read (regcache, |
2672 | I387_XMM0_REGNUM (tdep) + regnum, | |
2673 | raw_buf); | |
2674 | if (status != REG_VALID) | |
2675 | return status; | |
c131fcee L |
2676 | memcpy (buf, raw_buf, 16); |
2677 | /* Read upper 128bits. */ | |
05d1431c PA |
2678 | status = regcache_raw_read (regcache, |
2679 | tdep->ymm0h_regnum + regnum, | |
2680 | raw_buf); | |
2681 | if (status != REG_VALID) | |
2682 | return status; | |
c131fcee L |
2683 | memcpy (buf + 16, raw_buf, 16); |
2684 | } | |
2685 | else if (i386_word_regnum_p (gdbarch, regnum)) | |
1ba53b71 L |
2686 | { |
2687 | int gpnum = regnum - tdep->ax_regnum; | |
2688 | ||
2689 | /* Extract (always little endian). */ | |
05d1431c PA |
2690 | status = regcache_raw_read (regcache, gpnum, raw_buf); |
2691 | if (status != REG_VALID) | |
2692 | return status; | |
1ba53b71 L |
2693 | memcpy (buf, raw_buf, 2); |
2694 | } | |
2695 | else if (i386_byte_regnum_p (gdbarch, regnum)) | |
2696 | { | |
2697 | /* Check byte pseudo registers last since this function will | |
2698 | be called from amd64_pseudo_register_read, which handles | |
2699 | byte pseudo registers differently. */ | |
2700 | int gpnum = regnum - tdep->al_regnum; | |
2701 | ||
2702 | /* Extract (always little endian). We read both lower and | |
2703 | upper registers. */ | |
05d1431c PA |
2704 | status = regcache_raw_read (regcache, gpnum % 4, raw_buf); |
2705 | if (status != REG_VALID) | |
2706 | return status; | |
1ba53b71 L |
2707 | if (gpnum >= 4) |
2708 | memcpy (buf, raw_buf + 1, 1); | |
2709 | else | |
2710 | memcpy (buf, raw_buf, 1); | |
2711 | } | |
2712 | else | |
2713 | internal_error (__FILE__, __LINE__, _("invalid regnum")); | |
2714 | } | |
05d1431c PA |
2715 | |
2716 | return REG_VALID; | |
28fc6740 AC |
2717 | } |
2718 | ||
1ba53b71 | 2719 | void |
28fc6740 | 2720 | i386_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, |
42835c2b | 2721 | int regnum, const gdb_byte *buf) |
28fc6740 | 2722 | { |
1ba53b71 L |
2723 | gdb_byte raw_buf[MAX_REGISTER_SIZE]; |
2724 | ||
5716833c | 2725 | if (i386_mmx_regnum_p (gdbarch, regnum)) |
28fc6740 | 2726 | { |
c86c27af MK |
2727 | int fpnum = i386_mmx_regnum_to_fp_regnum (regcache, regnum); |
2728 | ||
28fc6740 | 2729 | /* Read ... */ |
1ba53b71 | 2730 | regcache_raw_read (regcache, fpnum, raw_buf); |
28fc6740 | 2731 | /* ... Modify ... (always little endian). */ |
1ba53b71 | 2732 | memcpy (raw_buf, buf, register_size (gdbarch, regnum)); |
28fc6740 | 2733 | /* ... Write. */ |
1ba53b71 | 2734 | regcache_raw_write (regcache, fpnum, raw_buf); |
28fc6740 AC |
2735 | } |
2736 | else | |
1ba53b71 L |
2737 | { |
2738 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
2739 | ||
c131fcee L |
2740 | if (i386_ymm_regnum_p (gdbarch, regnum)) |
2741 | { | |
2742 | regnum -= tdep->ymm0_regnum; | |
2743 | ||
2744 | /* ... Write lower 128bits. */ | |
2745 | regcache_raw_write (regcache, | |
2746 | I387_XMM0_REGNUM (tdep) + regnum, | |
2747 | buf); | |
2748 | /* ... Write upper 128bits. */ | |
2749 | regcache_raw_write (regcache, | |
2750 | tdep->ymm0h_regnum + regnum, | |
2751 | buf + 16); | |
2752 | } | |
2753 | else if (i386_word_regnum_p (gdbarch, regnum)) | |
1ba53b71 L |
2754 | { |
2755 | int gpnum = regnum - tdep->ax_regnum; | |
2756 | ||
2757 | /* Read ... */ | |
2758 | regcache_raw_read (regcache, gpnum, raw_buf); | |
2759 | /* ... Modify ... (always little endian). */ | |
2760 | memcpy (raw_buf, buf, 2); | |
2761 | /* ... Write. */ | |
2762 | regcache_raw_write (regcache, gpnum, raw_buf); | |
2763 | } | |
2764 | else if (i386_byte_regnum_p (gdbarch, regnum)) | |
2765 | { | |
2766 | /* Check byte pseudo registers last since this function will | |
2767 | be called from amd64_pseudo_register_read, which handles | |
2768 | byte pseudo registers differently. */ | |
2769 | int gpnum = regnum - tdep->al_regnum; | |
2770 | ||
2771 | /* Read ... We read both lower and upper registers. */ | |
2772 | regcache_raw_read (regcache, gpnum % 4, raw_buf); | |
2773 | /* ... Modify ... (always little endian). */ | |
2774 | if (gpnum >= 4) | |
2775 | memcpy (raw_buf + 1, buf, 1); | |
2776 | else | |
2777 | memcpy (raw_buf, buf, 1); | |
2778 | /* ... Write. */ | |
2779 | regcache_raw_write (regcache, gpnum % 4, raw_buf); | |
2780 | } | |
2781 | else | |
2782 | internal_error (__FILE__, __LINE__, _("invalid regnum")); | |
2783 | } | |
28fc6740 | 2784 | } |
ff2e87ac AC |
2785 | \f |
2786 | ||
ff2e87ac AC |
2787 | /* Return the register number of the register allocated by GCC after |
2788 | REGNUM, or -1 if there is no such register. */ | |
2789 | ||
2790 | static int | |
2791 | i386_next_regnum (int regnum) | |
2792 | { | |
2793 | /* GCC allocates the registers in the order: | |
2794 | ||
2795 | %eax, %edx, %ecx, %ebx, %esi, %edi, %ebp, %esp, ... | |
2796 | ||
2797 | Since storing a variable in %esp doesn't make any sense we return | |
2798 | -1 for %ebp and for %esp itself. */ | |
2799 | static int next_regnum[] = | |
2800 | { | |
2801 | I386_EDX_REGNUM, /* Slot for %eax. */ | |
2802 | I386_EBX_REGNUM, /* Slot for %ecx. */ | |
2803 | I386_ECX_REGNUM, /* Slot for %edx. */ | |
2804 | I386_ESI_REGNUM, /* Slot for %ebx. */ | |
2805 | -1, -1, /* Slots for %esp and %ebp. */ | |
2806 | I386_EDI_REGNUM, /* Slot for %esi. */ | |
2807 | I386_EBP_REGNUM /* Slot for %edi. */ | |
2808 | }; | |
2809 | ||
de5b9bb9 | 2810 | if (regnum >= 0 && regnum < sizeof (next_regnum) / sizeof (next_regnum[0])) |
ff2e87ac | 2811 | return next_regnum[regnum]; |
28fc6740 | 2812 | |
ff2e87ac AC |
2813 | return -1; |
2814 | } | |
2815 | ||
2816 | /* Return nonzero if a value of type TYPE stored in register REGNUM | |
2817 | needs any special handling. */ | |
d7a0d72c | 2818 | |
3a1e71e3 | 2819 | static int |
1777feb0 MS |
2820 | i386_convert_register_p (struct gdbarch *gdbarch, |
2821 | int regnum, struct type *type) | |
d7a0d72c | 2822 | { |
de5b9bb9 MK |
2823 | int len = TYPE_LENGTH (type); |
2824 | ||
ff2e87ac AC |
2825 | /* Values may be spread across multiple registers. Most debugging |
2826 | formats aren't expressive enough to specify the locations, so | |
2827 | some heuristics is involved. Right now we only handle types that | |
de5b9bb9 MK |
2828 | have a length that is a multiple of the word size, since GCC |
2829 | doesn't seem to put any other types into registers. */ | |
2830 | if (len > 4 && len % 4 == 0) | |
2831 | { | |
2832 | int last_regnum = regnum; | |
2833 | ||
2834 | while (len > 4) | |
2835 | { | |
2836 | last_regnum = i386_next_regnum (last_regnum); | |
2837 | len -= 4; | |
2838 | } | |
2839 | ||
2840 | if (last_regnum != -1) | |
2841 | return 1; | |
2842 | } | |
ff2e87ac | 2843 | |
0abe36f5 | 2844 | return i387_convert_register_p (gdbarch, regnum, type); |
d7a0d72c MK |
2845 | } |
2846 | ||
ff2e87ac AC |
2847 | /* Read a value of type TYPE from register REGNUM in frame FRAME, and |
2848 | return its contents in TO. */ | |
ac27f131 | 2849 | |
8dccd430 | 2850 | static int |
ff2e87ac | 2851 | i386_register_to_value (struct frame_info *frame, int regnum, |
8dccd430 PA |
2852 | struct type *type, gdb_byte *to, |
2853 | int *optimizedp, int *unavailablep) | |
ac27f131 | 2854 | { |
20a6ec49 | 2855 | struct gdbarch *gdbarch = get_frame_arch (frame); |
de5b9bb9 | 2856 | int len = TYPE_LENGTH (type); |
de5b9bb9 | 2857 | |
20a6ec49 | 2858 | if (i386_fp_regnum_p (gdbarch, regnum)) |
8dccd430 PA |
2859 | return i387_register_to_value (frame, regnum, type, to, |
2860 | optimizedp, unavailablep); | |
ff2e87ac | 2861 | |
fd35795f | 2862 | /* Read a value spread across multiple registers. */ |
de5b9bb9 MK |
2863 | |
2864 | gdb_assert (len > 4 && len % 4 == 0); | |
3d261580 | 2865 | |
de5b9bb9 MK |
2866 | while (len > 0) |
2867 | { | |
2868 | gdb_assert (regnum != -1); | |
20a6ec49 | 2869 | gdb_assert (register_size (gdbarch, regnum) == 4); |
d532c08f | 2870 | |
8dccd430 PA |
2871 | if (!get_frame_register_bytes (frame, regnum, 0, |
2872 | register_size (gdbarch, regnum), | |
2873 | to, optimizedp, unavailablep)) | |
2874 | return 0; | |
2875 | ||
de5b9bb9 MK |
2876 | regnum = i386_next_regnum (regnum); |
2877 | len -= 4; | |
42835c2b | 2878 | to += 4; |
de5b9bb9 | 2879 | } |
8dccd430 PA |
2880 | |
2881 | *optimizedp = *unavailablep = 0; | |
2882 | return 1; | |
ac27f131 MK |
2883 | } |
2884 | ||
ff2e87ac AC |
2885 | /* Write the contents FROM of a value of type TYPE into register |
2886 | REGNUM in frame FRAME. */ | |
ac27f131 | 2887 | |
3a1e71e3 | 2888 | static void |
ff2e87ac | 2889 | i386_value_to_register (struct frame_info *frame, int regnum, |
42835c2b | 2890 | struct type *type, const gdb_byte *from) |
ac27f131 | 2891 | { |
de5b9bb9 | 2892 | int len = TYPE_LENGTH (type); |
de5b9bb9 | 2893 | |
20a6ec49 | 2894 | if (i386_fp_regnum_p (get_frame_arch (frame), regnum)) |
c6ba6f0d | 2895 | { |
d532c08f MK |
2896 | i387_value_to_register (frame, regnum, type, from); |
2897 | return; | |
2898 | } | |
3d261580 | 2899 | |
fd35795f | 2900 | /* Write a value spread across multiple registers. */ |
de5b9bb9 MK |
2901 | |
2902 | gdb_assert (len > 4 && len % 4 == 0); | |
ff2e87ac | 2903 | |
de5b9bb9 MK |
2904 | while (len > 0) |
2905 | { | |
2906 | gdb_assert (regnum != -1); | |
875f8d0e | 2907 | gdb_assert (register_size (get_frame_arch (frame), regnum) == 4); |
d532c08f | 2908 | |
42835c2b | 2909 | put_frame_register (frame, regnum, from); |
de5b9bb9 MK |
2910 | regnum = i386_next_regnum (regnum); |
2911 | len -= 4; | |
42835c2b | 2912 | from += 4; |
de5b9bb9 | 2913 | } |
ac27f131 | 2914 | } |
ff2e87ac | 2915 | \f |
7fdafb5a MK |
2916 | /* Supply register REGNUM from the buffer specified by GREGS and LEN |
2917 | in the general-purpose register set REGSET to register cache | |
2918 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
ff2e87ac | 2919 | |
20187ed5 | 2920 | void |
473f17b0 MK |
2921 | i386_supply_gregset (const struct regset *regset, struct regcache *regcache, |
2922 | int regnum, const void *gregs, size_t len) | |
2923 | { | |
9ea75c57 | 2924 | const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch); |
156cdbee | 2925 | const gdb_byte *regs = gregs; |
473f17b0 MK |
2926 | int i; |
2927 | ||
2928 | gdb_assert (len == tdep->sizeof_gregset); | |
2929 | ||
2930 | for (i = 0; i < tdep->gregset_num_regs; i++) | |
2931 | { | |
2932 | if ((regnum == i || regnum == -1) | |
2933 | && tdep->gregset_reg_offset[i] != -1) | |
2934 | regcache_raw_supply (regcache, i, regs + tdep->gregset_reg_offset[i]); | |
2935 | } | |
2936 | } | |
2937 | ||
7fdafb5a MK |
2938 | /* Collect register REGNUM from the register cache REGCACHE and store |
2939 | it in the buffer specified by GREGS and LEN as described by the | |
2940 | general-purpose register set REGSET. If REGNUM is -1, do this for | |
2941 | all registers in REGSET. */ | |
2942 | ||
2943 | void | |
2944 | i386_collect_gregset (const struct regset *regset, | |
2945 | const struct regcache *regcache, | |
2946 | int regnum, void *gregs, size_t len) | |
2947 | { | |
2948 | const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch); | |
156cdbee | 2949 | gdb_byte *regs = gregs; |
7fdafb5a MK |
2950 | int i; |
2951 | ||
2952 | gdb_assert (len == tdep->sizeof_gregset); | |
2953 | ||
2954 | for (i = 0; i < tdep->gregset_num_regs; i++) | |
2955 | { | |
2956 | if ((regnum == i || regnum == -1) | |
2957 | && tdep->gregset_reg_offset[i] != -1) | |
2958 | regcache_raw_collect (regcache, i, regs + tdep->gregset_reg_offset[i]); | |
2959 | } | |
2960 | } | |
2961 | ||
2962 | /* Supply register REGNUM from the buffer specified by FPREGS and LEN | |
2963 | in the floating-point register set REGSET to register cache | |
2964 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
473f17b0 MK |
2965 | |
2966 | static void | |
2967 | i386_supply_fpregset (const struct regset *regset, struct regcache *regcache, | |
2968 | int regnum, const void *fpregs, size_t len) | |
2969 | { | |
9ea75c57 | 2970 | const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch); |
473f17b0 | 2971 | |
66a72d25 MK |
2972 | if (len == I387_SIZEOF_FXSAVE) |
2973 | { | |
2974 | i387_supply_fxsave (regcache, regnum, fpregs); | |
2975 | return; | |
2976 | } | |
2977 | ||
473f17b0 MK |
2978 | gdb_assert (len == tdep->sizeof_fpregset); |
2979 | i387_supply_fsave (regcache, regnum, fpregs); | |
2980 | } | |
8446b36a | 2981 | |
2f305df1 MK |
2982 | /* Collect register REGNUM from the register cache REGCACHE and store |
2983 | it in the buffer specified by FPREGS and LEN as described by the | |
2984 | floating-point register set REGSET. If REGNUM is -1, do this for | |
2985 | all registers in REGSET. */ | |
7fdafb5a MK |
2986 | |
2987 | static void | |
2988 | i386_collect_fpregset (const struct regset *regset, | |
2989 | const struct regcache *regcache, | |
2990 | int regnum, void *fpregs, size_t len) | |
2991 | { | |
2992 | const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch); | |
2993 | ||
2994 | if (len == I387_SIZEOF_FXSAVE) | |
2995 | { | |
2996 | i387_collect_fxsave (regcache, regnum, fpregs); | |
2997 | return; | |
2998 | } | |
2999 | ||
3000 | gdb_assert (len == tdep->sizeof_fpregset); | |
3001 | i387_collect_fsave (regcache, regnum, fpregs); | |
3002 | } | |
3003 | ||
c131fcee L |
3004 | /* Similar to i386_supply_fpregset, but use XSAVE extended state. */ |
3005 | ||
3006 | static void | |
3007 | i386_supply_xstateregset (const struct regset *regset, | |
3008 | struct regcache *regcache, int regnum, | |
3009 | const void *xstateregs, size_t len) | |
3010 | { | |
c131fcee L |
3011 | i387_supply_xsave (regcache, regnum, xstateregs); |
3012 | } | |
3013 | ||
3014 | /* Similar to i386_collect_fpregset , but use XSAVE extended state. */ | |
3015 | ||
3016 | static void | |
3017 | i386_collect_xstateregset (const struct regset *regset, | |
3018 | const struct regcache *regcache, | |
3019 | int regnum, void *xstateregs, size_t len) | |
3020 | { | |
c131fcee L |
3021 | i387_collect_xsave (regcache, regnum, xstateregs, 1); |
3022 | } | |
3023 | ||
8446b36a MK |
3024 | /* Return the appropriate register set for the core section identified |
3025 | by SECT_NAME and SECT_SIZE. */ | |
3026 | ||
3027 | const struct regset * | |
3028 | i386_regset_from_core_section (struct gdbarch *gdbarch, | |
3029 | const char *sect_name, size_t sect_size) | |
3030 | { | |
3031 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
3032 | ||
3033 | if (strcmp (sect_name, ".reg") == 0 && sect_size == tdep->sizeof_gregset) | |
3034 | { | |
3035 | if (tdep->gregset == NULL) | |
7fdafb5a MK |
3036 | tdep->gregset = regset_alloc (gdbarch, i386_supply_gregset, |
3037 | i386_collect_gregset); | |
8446b36a MK |
3038 | return tdep->gregset; |
3039 | } | |
3040 | ||
66a72d25 MK |
3041 | if ((strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset) |
3042 | || (strcmp (sect_name, ".reg-xfp") == 0 | |
3043 | && sect_size == I387_SIZEOF_FXSAVE)) | |
8446b36a MK |
3044 | { |
3045 | if (tdep->fpregset == NULL) | |
7fdafb5a MK |
3046 | tdep->fpregset = regset_alloc (gdbarch, i386_supply_fpregset, |
3047 | i386_collect_fpregset); | |
8446b36a MK |
3048 | return tdep->fpregset; |
3049 | } | |
3050 | ||
c131fcee L |
3051 | if (strcmp (sect_name, ".reg-xstate") == 0) |
3052 | { | |
3053 | if (tdep->xstateregset == NULL) | |
3054 | tdep->xstateregset = regset_alloc (gdbarch, | |
3055 | i386_supply_xstateregset, | |
3056 | i386_collect_xstateregset); | |
3057 | ||
3058 | return tdep->xstateregset; | |
3059 | } | |
3060 | ||
8446b36a MK |
3061 | return NULL; |
3062 | } | |
473f17b0 | 3063 | \f |
fc338970 | 3064 | |
fc338970 | 3065 | /* Stuff for WIN32 PE style DLL's but is pretty generic really. */ |
c906108c SS |
3066 | |
3067 | CORE_ADDR | |
e17a4113 UW |
3068 | i386_pe_skip_trampoline_code (struct frame_info *frame, |
3069 | CORE_ADDR pc, char *name) | |
c906108c | 3070 | { |
e17a4113 UW |
3071 | struct gdbarch *gdbarch = get_frame_arch (frame); |
3072 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
3073 | ||
3074 | /* jmp *(dest) */ | |
3075 | if (pc && read_memory_unsigned_integer (pc, 2, byte_order) == 0x25ff) | |
c906108c | 3076 | { |
e17a4113 UW |
3077 | unsigned long indirect = |
3078 | read_memory_unsigned_integer (pc + 2, 4, byte_order); | |
c906108c | 3079 | struct minimal_symbol *indsym = |
fc338970 | 3080 | indirect ? lookup_minimal_symbol_by_pc (indirect) : 0; |
645dd519 | 3081 | char *symname = indsym ? SYMBOL_LINKAGE_NAME (indsym) : 0; |
c906108c | 3082 | |
c5aa993b | 3083 | if (symname) |
c906108c | 3084 | { |
c5aa993b JM |
3085 | if (strncmp (symname, "__imp_", 6) == 0 |
3086 | || strncmp (symname, "_imp_", 5) == 0) | |
e17a4113 UW |
3087 | return name ? 1 : |
3088 | read_memory_unsigned_integer (indirect, 4, byte_order); | |
c906108c SS |
3089 | } |
3090 | } | |
fc338970 | 3091 | return 0; /* Not a trampoline. */ |
c906108c | 3092 | } |
fc338970 MK |
3093 | \f |
3094 | ||
10458914 DJ |
3095 | /* Return whether the THIS_FRAME corresponds to a sigtramp |
3096 | routine. */ | |
8201327c | 3097 | |
4bd207ef | 3098 | int |
10458914 | 3099 | i386_sigtramp_p (struct frame_info *this_frame) |
8201327c | 3100 | { |
10458914 | 3101 | CORE_ADDR pc = get_frame_pc (this_frame); |
911bc6ee MK |
3102 | char *name; |
3103 | ||
3104 | find_pc_partial_function (pc, &name, NULL, NULL); | |
8201327c MK |
3105 | return (name && strcmp ("_sigtramp", name) == 0); |
3106 | } | |
3107 | \f | |
3108 | ||
fc338970 MK |
3109 | /* We have two flavours of disassembly. The machinery on this page |
3110 | deals with switching between those. */ | |
c906108c SS |
3111 | |
3112 | static int | |
a89aa300 | 3113 | i386_print_insn (bfd_vma pc, struct disassemble_info *info) |
c906108c | 3114 | { |
5e3397bb MK |
3115 | gdb_assert (disassembly_flavor == att_flavor |
3116 | || disassembly_flavor == intel_flavor); | |
3117 | ||
3118 | /* FIXME: kettenis/20020915: Until disassembler_options is properly | |
3119 | constified, cast to prevent a compiler warning. */ | |
3120 | info->disassembler_options = (char *) disassembly_flavor; | |
5e3397bb MK |
3121 | |
3122 | return print_insn_i386 (pc, info); | |
7a292a7a | 3123 | } |
fc338970 | 3124 | \f |
3ce1502b | 3125 | |
8201327c MK |
3126 | /* There are a few i386 architecture variants that differ only |
3127 | slightly from the generic i386 target. For now, we don't give them | |
3128 | their own source file, but include them here. As a consequence, | |
3129 | they'll always be included. */ | |
3ce1502b | 3130 | |
8201327c | 3131 | /* System V Release 4 (SVR4). */ |
3ce1502b | 3132 | |
10458914 DJ |
3133 | /* Return whether THIS_FRAME corresponds to a SVR4 sigtramp |
3134 | routine. */ | |
911bc6ee | 3135 | |
8201327c | 3136 | static int |
10458914 | 3137 | i386_svr4_sigtramp_p (struct frame_info *this_frame) |
d2a7c97a | 3138 | { |
10458914 | 3139 | CORE_ADDR pc = get_frame_pc (this_frame); |
911bc6ee MK |
3140 | char *name; |
3141 | ||
acd5c798 MK |
3142 | /* UnixWare uses _sigacthandler. The origin of the other symbols is |
3143 | currently unknown. */ | |
911bc6ee | 3144 | find_pc_partial_function (pc, &name, NULL, NULL); |
8201327c MK |
3145 | return (name && (strcmp ("_sigreturn", name) == 0 |
3146 | || strcmp ("_sigacthandler", name) == 0 | |
3147 | || strcmp ("sigvechandler", name) == 0)); | |
3148 | } | |
d2a7c97a | 3149 | |
10458914 DJ |
3150 | /* Assuming THIS_FRAME is for a SVR4 sigtramp routine, return the |
3151 | address of the associated sigcontext (ucontext) structure. */ | |
3ce1502b | 3152 | |
3a1e71e3 | 3153 | static CORE_ADDR |
10458914 | 3154 | i386_svr4_sigcontext_addr (struct frame_info *this_frame) |
8201327c | 3155 | { |
e17a4113 UW |
3156 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
3157 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
63c0089f | 3158 | gdb_byte buf[4]; |
acd5c798 | 3159 | CORE_ADDR sp; |
3ce1502b | 3160 | |
10458914 | 3161 | get_frame_register (this_frame, I386_ESP_REGNUM, buf); |
e17a4113 | 3162 | sp = extract_unsigned_integer (buf, 4, byte_order); |
21d0e8a4 | 3163 | |
e17a4113 | 3164 | return read_memory_unsigned_integer (sp + 8, 4, byte_order); |
8201327c MK |
3165 | } |
3166 | \f | |
3ce1502b | 3167 | |
8201327c | 3168 | /* Generic ELF. */ |
d2a7c97a | 3169 | |
8201327c MK |
3170 | void |
3171 | i386_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
3172 | { | |
c4fc7f1b MK |
3173 | /* We typically use stabs-in-ELF with the SVR4 register numbering. */ |
3174 | set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); | |
8201327c | 3175 | } |
3ce1502b | 3176 | |
8201327c | 3177 | /* System V Release 4 (SVR4). */ |
3ce1502b | 3178 | |
8201327c MK |
3179 | void |
3180 | i386_svr4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
3181 | { | |
3182 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
3ce1502b | 3183 | |
8201327c MK |
3184 | /* System V Release 4 uses ELF. */ |
3185 | i386_elf_init_abi (info, gdbarch); | |
3ce1502b | 3186 | |
dfe01d39 | 3187 | /* System V Release 4 has shared libraries. */ |
dfe01d39 MK |
3188 | set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); |
3189 | ||
911bc6ee | 3190 | tdep->sigtramp_p = i386_svr4_sigtramp_p; |
21d0e8a4 | 3191 | tdep->sigcontext_addr = i386_svr4_sigcontext_addr; |
acd5c798 MK |
3192 | tdep->sc_pc_offset = 36 + 14 * 4; |
3193 | tdep->sc_sp_offset = 36 + 17 * 4; | |
3ce1502b | 3194 | |
8201327c | 3195 | tdep->jb_pc_offset = 20; |
3ce1502b MK |
3196 | } |
3197 | ||
8201327c | 3198 | /* DJGPP. */ |
3ce1502b | 3199 | |
3a1e71e3 | 3200 | static void |
8201327c | 3201 | i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
3ce1502b | 3202 | { |
8201327c | 3203 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
3ce1502b | 3204 | |
911bc6ee MK |
3205 | /* DJGPP doesn't have any special frames for signal handlers. */ |
3206 | tdep->sigtramp_p = NULL; | |
3ce1502b | 3207 | |
8201327c | 3208 | tdep->jb_pc_offset = 36; |
15430fc0 EZ |
3209 | |
3210 | /* DJGPP does not support the SSE registers. */ | |
3a13a53b L |
3211 | if (! tdesc_has_registers (info.target_desc)) |
3212 | tdep->tdesc = tdesc_i386_mmx; | |
3d22076f EZ |
3213 | |
3214 | /* Native compiler is GCC, which uses the SVR4 register numbering | |
3215 | even in COFF and STABS. See the comment in i386_gdbarch_init, | |
3216 | before the calls to set_gdbarch_stab_reg_to_regnum and | |
3217 | set_gdbarch_sdb_reg_to_regnum. */ | |
3218 | set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); | |
3219 | set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); | |
ab38a727 PA |
3220 | |
3221 | set_gdbarch_has_dos_based_file_system (gdbarch, 1); | |
3ce1502b | 3222 | } |
8201327c | 3223 | \f |
2acceee2 | 3224 | |
38c968cf AC |
3225 | /* i386 register groups. In addition to the normal groups, add "mmx" |
3226 | and "sse". */ | |
3227 | ||
3228 | static struct reggroup *i386_sse_reggroup; | |
3229 | static struct reggroup *i386_mmx_reggroup; | |
3230 | ||
3231 | static void | |
3232 | i386_init_reggroups (void) | |
3233 | { | |
3234 | i386_sse_reggroup = reggroup_new ("sse", USER_REGGROUP); | |
3235 | i386_mmx_reggroup = reggroup_new ("mmx", USER_REGGROUP); | |
3236 | } | |
3237 | ||
3238 | static void | |
3239 | i386_add_reggroups (struct gdbarch *gdbarch) | |
3240 | { | |
3241 | reggroup_add (gdbarch, i386_sse_reggroup); | |
3242 | reggroup_add (gdbarch, i386_mmx_reggroup); | |
3243 | reggroup_add (gdbarch, general_reggroup); | |
3244 | reggroup_add (gdbarch, float_reggroup); | |
3245 | reggroup_add (gdbarch, all_reggroup); | |
3246 | reggroup_add (gdbarch, save_reggroup); | |
3247 | reggroup_add (gdbarch, restore_reggroup); | |
3248 | reggroup_add (gdbarch, vector_reggroup); | |
3249 | reggroup_add (gdbarch, system_reggroup); | |
3250 | } | |
3251 | ||
3252 | int | |
3253 | i386_register_reggroup_p (struct gdbarch *gdbarch, int regnum, | |
3254 | struct reggroup *group) | |
3255 | { | |
c131fcee L |
3256 | const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
3257 | int fp_regnum_p, mmx_regnum_p, xmm_regnum_p, mxcsr_regnum_p, | |
3258 | ymm_regnum_p, ymmh_regnum_p; | |
acd5c798 | 3259 | |
1ba53b71 L |
3260 | /* Don't include pseudo registers, except for MMX, in any register |
3261 | groups. */ | |
c131fcee | 3262 | if (i386_byte_regnum_p (gdbarch, regnum)) |
1ba53b71 L |
3263 | return 0; |
3264 | ||
c131fcee | 3265 | if (i386_word_regnum_p (gdbarch, regnum)) |
1ba53b71 L |
3266 | return 0; |
3267 | ||
c131fcee | 3268 | if (i386_dword_regnum_p (gdbarch, regnum)) |
1ba53b71 L |
3269 | return 0; |
3270 | ||
3271 | mmx_regnum_p = i386_mmx_regnum_p (gdbarch, regnum); | |
38c968cf AC |
3272 | if (group == i386_mmx_reggroup) |
3273 | return mmx_regnum_p; | |
1ba53b71 | 3274 | |
c131fcee L |
3275 | xmm_regnum_p = i386_xmm_regnum_p (gdbarch, regnum); |
3276 | mxcsr_regnum_p = i386_mxcsr_regnum_p (gdbarch, regnum); | |
38c968cf | 3277 | if (group == i386_sse_reggroup) |
c131fcee L |
3278 | return xmm_regnum_p || mxcsr_regnum_p; |
3279 | ||
3280 | ymm_regnum_p = i386_ymm_regnum_p (gdbarch, regnum); | |
38c968cf | 3281 | if (group == vector_reggroup) |
c131fcee L |
3282 | return (mmx_regnum_p |
3283 | || ymm_regnum_p | |
3284 | || mxcsr_regnum_p | |
3285 | || (xmm_regnum_p | |
3286 | && ((tdep->xcr0 & I386_XSTATE_AVX_MASK) | |
3287 | == I386_XSTATE_SSE_MASK))); | |
1ba53b71 L |
3288 | |
3289 | fp_regnum_p = (i386_fp_regnum_p (gdbarch, regnum) | |
3290 | || i386_fpc_regnum_p (gdbarch, regnum)); | |
38c968cf AC |
3291 | if (group == float_reggroup) |
3292 | return fp_regnum_p; | |
1ba53b71 | 3293 | |
c131fcee L |
3294 | /* For "info reg all", don't include upper YMM registers nor XMM |
3295 | registers when AVX is supported. */ | |
3296 | ymmh_regnum_p = i386_ymmh_regnum_p (gdbarch, regnum); | |
3297 | if (group == all_reggroup | |
3298 | && ((xmm_regnum_p | |
3299 | && (tdep->xcr0 & I386_XSTATE_AVX)) | |
3300 | || ymmh_regnum_p)) | |
3301 | return 0; | |
3302 | ||
38c968cf | 3303 | if (group == general_reggroup) |
1ba53b71 L |
3304 | return (!fp_regnum_p |
3305 | && !mmx_regnum_p | |
c131fcee L |
3306 | && !mxcsr_regnum_p |
3307 | && !xmm_regnum_p | |
3308 | && !ymm_regnum_p | |
3309 | && !ymmh_regnum_p); | |
acd5c798 | 3310 | |
38c968cf AC |
3311 | return default_register_reggroup_p (gdbarch, regnum, group); |
3312 | } | |
38c968cf | 3313 | \f |
acd5c798 | 3314 | |
f837910f MK |
3315 | /* Get the ARGIth function argument for the current function. */ |
3316 | ||
42c466d7 | 3317 | static CORE_ADDR |
143985b7 AF |
3318 | i386_fetch_pointer_argument (struct frame_info *frame, int argi, |
3319 | struct type *type) | |
3320 | { | |
e17a4113 UW |
3321 | struct gdbarch *gdbarch = get_frame_arch (frame); |
3322 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
f837910f | 3323 | CORE_ADDR sp = get_frame_register_unsigned (frame, I386_ESP_REGNUM); |
e17a4113 | 3324 | return read_memory_unsigned_integer (sp + (4 * (argi + 1)), 4, byte_order); |
143985b7 AF |
3325 | } |
3326 | ||
514f746b AR |
3327 | static void |
3328 | i386_skip_permanent_breakpoint (struct regcache *regcache) | |
3329 | { | |
3330 | CORE_ADDR current_pc = regcache_read_pc (regcache); | |
3331 | ||
3332 | /* On i386, breakpoint is exactly 1 byte long, so we just | |
3333 | adjust the PC in the regcache. */ | |
3334 | current_pc += 1; | |
3335 | regcache_write_pc (regcache, current_pc); | |
3336 | } | |
3337 | ||
3338 | ||
7ad10968 HZ |
3339 | #define PREFIX_REPZ 0x01 |
3340 | #define PREFIX_REPNZ 0x02 | |
3341 | #define PREFIX_LOCK 0x04 | |
3342 | #define PREFIX_DATA 0x08 | |
3343 | #define PREFIX_ADDR 0x10 | |
473f17b0 | 3344 | |
7ad10968 HZ |
3345 | /* operand size */ |
3346 | enum | |
3347 | { | |
3348 | OT_BYTE = 0, | |
3349 | OT_WORD, | |
3350 | OT_LONG, | |
cf648174 | 3351 | OT_QUAD, |
a3c4230a | 3352 | OT_DQUAD, |
7ad10968 | 3353 | }; |
473f17b0 | 3354 | |
7ad10968 HZ |
3355 | /* i386 arith/logic operations */ |
3356 | enum | |
3357 | { | |
3358 | OP_ADDL, | |
3359 | OP_ORL, | |
3360 | OP_ADCL, | |
3361 | OP_SBBL, | |
3362 | OP_ANDL, | |
3363 | OP_SUBL, | |
3364 | OP_XORL, | |
3365 | OP_CMPL, | |
3366 | }; | |
5716833c | 3367 | |
7ad10968 HZ |
3368 | struct i386_record_s |
3369 | { | |
cf648174 | 3370 | struct gdbarch *gdbarch; |
7ad10968 | 3371 | struct regcache *regcache; |
df61f520 | 3372 | CORE_ADDR orig_addr; |
7ad10968 HZ |
3373 | CORE_ADDR addr; |
3374 | int aflag; | |
3375 | int dflag; | |
3376 | int override; | |
3377 | uint8_t modrm; | |
3378 | uint8_t mod, reg, rm; | |
3379 | int ot; | |
cf648174 HZ |
3380 | uint8_t rex_x; |
3381 | uint8_t rex_b; | |
3382 | int rip_offset; | |
3383 | int popl_esp_hack; | |
3384 | const int *regmap; | |
7ad10968 | 3385 | }; |
5716833c | 3386 | |
7ad10968 | 3387 | /* Parse "modrm" part in current memory address that irp->addr point to |
1777feb0 | 3388 | Return -1 if something wrong. */ |
5716833c | 3389 | |
7ad10968 HZ |
3390 | static int |
3391 | i386_record_modrm (struct i386_record_s *irp) | |
3392 | { | |
cf648174 | 3393 | struct gdbarch *gdbarch = irp->gdbarch; |
5af949e3 | 3394 | |
7ad10968 HZ |
3395 | if (target_read_memory (irp->addr, &irp->modrm, 1)) |
3396 | { | |
3397 | if (record_debug) | |
3398 | printf_unfiltered (_("Process record: error reading memory at " | |
5af949e3 UW |
3399 | "addr %s len = 1.\n"), |
3400 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3401 | return -1; |
3402 | } | |
3403 | irp->addr++; | |
3404 | irp->mod = (irp->modrm >> 6) & 3; | |
3405 | irp->reg = (irp->modrm >> 3) & 7; | |
3406 | irp->rm = irp->modrm & 7; | |
5716833c | 3407 | |
7ad10968 HZ |
3408 | return 0; |
3409 | } | |
d2a7c97a | 3410 | |
7ad10968 HZ |
3411 | /* Get the memory address that current instruction write to and set it to |
3412 | the argument "addr". | |
1777feb0 | 3413 | Return -1 if something wrong. */ |
8201327c | 3414 | |
7ad10968 | 3415 | static int |
cf648174 | 3416 | i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) |
7ad10968 | 3417 | { |
cf648174 | 3418 | struct gdbarch *gdbarch = irp->gdbarch; |
60a1502a MS |
3419 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
3420 | gdb_byte buf[4]; | |
3421 | ULONGEST offset64; | |
21d0e8a4 | 3422 | |
7ad10968 HZ |
3423 | *addr = 0; |
3424 | if (irp->aflag) | |
3425 | { | |
3426 | /* 32 bits */ | |
3427 | int havesib = 0; | |
3428 | uint8_t scale = 0; | |
648d0c8b | 3429 | uint8_t byte; |
7ad10968 HZ |
3430 | uint8_t index = 0; |
3431 | uint8_t base = irp->rm; | |
896fb97d | 3432 | |
7ad10968 HZ |
3433 | if (base == 4) |
3434 | { | |
3435 | havesib = 1; | |
648d0c8b | 3436 | if (target_read_memory (irp->addr, &byte, 1)) |
7ad10968 HZ |
3437 | { |
3438 | if (record_debug) | |
3439 | printf_unfiltered (_("Process record: error reading memory " | |
5af949e3 UW |
3440 | "at addr %s len = 1.\n"), |
3441 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3442 | return -1; |
3443 | } | |
3444 | irp->addr++; | |
648d0c8b MS |
3445 | scale = (byte >> 6) & 3; |
3446 | index = ((byte >> 3) & 7) | irp->rex_x; | |
3447 | base = (byte & 7); | |
7ad10968 | 3448 | } |
cf648174 | 3449 | base |= irp->rex_b; |
21d0e8a4 | 3450 | |
7ad10968 HZ |
3451 | switch (irp->mod) |
3452 | { | |
3453 | case 0: | |
3454 | if ((base & 7) == 5) | |
3455 | { | |
3456 | base = 0xff; | |
60a1502a | 3457 | if (target_read_memory (irp->addr, buf, 4)) |
7ad10968 HZ |
3458 | { |
3459 | if (record_debug) | |
3460 | printf_unfiltered (_("Process record: error reading " | |
5af949e3 UW |
3461 | "memory at addr %s len = 4.\n"), |
3462 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3463 | return -1; |
3464 | } | |
3465 | irp->addr += 4; | |
60a1502a | 3466 | *addr = extract_signed_integer (buf, 4, byte_order); |
cf648174 HZ |
3467 | if (irp->regmap[X86_RECORD_R8_REGNUM] && !havesib) |
3468 | *addr += irp->addr + irp->rip_offset; | |
7ad10968 | 3469 | } |
7ad10968 HZ |
3470 | break; |
3471 | case 1: | |
60a1502a | 3472 | if (target_read_memory (irp->addr, buf, 1)) |
7ad10968 HZ |
3473 | { |
3474 | if (record_debug) | |
3475 | printf_unfiltered (_("Process record: error reading memory " | |
5af949e3 UW |
3476 | "at addr %s len = 1.\n"), |
3477 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3478 | return -1; |
3479 | } | |
3480 | irp->addr++; | |
60a1502a | 3481 | *addr = (int8_t) buf[0]; |
7ad10968 HZ |
3482 | break; |
3483 | case 2: | |
60a1502a | 3484 | if (target_read_memory (irp->addr, buf, 4)) |
7ad10968 HZ |
3485 | { |
3486 | if (record_debug) | |
3487 | printf_unfiltered (_("Process record: error reading memory " | |
5af949e3 UW |
3488 | "at addr %s len = 4.\n"), |
3489 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3490 | return -1; |
3491 | } | |
60a1502a | 3492 | *addr = extract_signed_integer (buf, 4, byte_order); |
7ad10968 HZ |
3493 | irp->addr += 4; |
3494 | break; | |
3495 | } | |
356a6b3e | 3496 | |
60a1502a | 3497 | offset64 = 0; |
7ad10968 | 3498 | if (base != 0xff) |
cf648174 HZ |
3499 | { |
3500 | if (base == 4 && irp->popl_esp_hack) | |
3501 | *addr += irp->popl_esp_hack; | |
3502 | regcache_raw_read_unsigned (irp->regcache, irp->regmap[base], | |
60a1502a | 3503 | &offset64); |
7ad10968 | 3504 | } |
cf648174 HZ |
3505 | if (irp->aflag == 2) |
3506 | { | |
60a1502a | 3507 | *addr += offset64; |
cf648174 HZ |
3508 | } |
3509 | else | |
60a1502a | 3510 | *addr = (uint32_t) (offset64 + *addr); |
c4fc7f1b | 3511 | |
7ad10968 HZ |
3512 | if (havesib && (index != 4 || scale != 0)) |
3513 | { | |
cf648174 | 3514 | regcache_raw_read_unsigned (irp->regcache, irp->regmap[index], |
60a1502a | 3515 | &offset64); |
cf648174 | 3516 | if (irp->aflag == 2) |
60a1502a | 3517 | *addr += offset64 << scale; |
cf648174 | 3518 | else |
60a1502a | 3519 | *addr = (uint32_t) (*addr + (offset64 << scale)); |
7ad10968 HZ |
3520 | } |
3521 | } | |
3522 | else | |
3523 | { | |
3524 | /* 16 bits */ | |
3525 | switch (irp->mod) | |
3526 | { | |
3527 | case 0: | |
3528 | if (irp->rm == 6) | |
3529 | { | |
60a1502a | 3530 | if (target_read_memory (irp->addr, buf, 2)) |
7ad10968 HZ |
3531 | { |
3532 | if (record_debug) | |
3533 | printf_unfiltered (_("Process record: error reading " | |
5af949e3 UW |
3534 | "memory at addr %s len = 2.\n"), |
3535 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3536 | return -1; |
3537 | } | |
3538 | irp->addr += 2; | |
60a1502a | 3539 | *addr = extract_signed_integer (buf, 2, byte_order); |
7ad10968 HZ |
3540 | irp->rm = 0; |
3541 | goto no_rm; | |
3542 | } | |
7ad10968 HZ |
3543 | break; |
3544 | case 1: | |
60a1502a | 3545 | if (target_read_memory (irp->addr, buf, 1)) |
7ad10968 HZ |
3546 | { |
3547 | if (record_debug) | |
3548 | printf_unfiltered (_("Process record: error reading memory " | |
5af949e3 UW |
3549 | "at addr %s len = 1.\n"), |
3550 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3551 | return -1; |
3552 | } | |
3553 | irp->addr++; | |
60a1502a | 3554 | *addr = (int8_t) buf[0]; |
7ad10968 HZ |
3555 | break; |
3556 | case 2: | |
60a1502a | 3557 | if (target_read_memory (irp->addr, buf, 2)) |
7ad10968 HZ |
3558 | { |
3559 | if (record_debug) | |
3560 | printf_unfiltered (_("Process record: error reading memory " | |
5af949e3 UW |
3561 | "at addr %s len = 2.\n"), |
3562 | paddress (gdbarch, irp->addr)); | |
7ad10968 HZ |
3563 | return -1; |
3564 | } | |
3565 | irp->addr += 2; | |
60a1502a | 3566 | *addr = extract_signed_integer (buf, 2, byte_order); |
7ad10968 HZ |
3567 | break; |
3568 | } | |
c4fc7f1b | 3569 | |
7ad10968 HZ |
3570 | switch (irp->rm) |
3571 | { | |
3572 | case 0: | |
cf648174 HZ |
3573 | regcache_raw_read_unsigned (irp->regcache, |
3574 | irp->regmap[X86_RECORD_REBX_REGNUM], | |
60a1502a MS |
3575 | &offset64); |
3576 | *addr = (uint32_t) (*addr + offset64); | |
cf648174 HZ |
3577 | regcache_raw_read_unsigned (irp->regcache, |
3578 | irp->regmap[X86_RECORD_RESI_REGNUM], | |
60a1502a MS |
3579 | &offset64); |
3580 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3581 | break; |
3582 | case 1: | |
cf648174 HZ |
3583 | regcache_raw_read_unsigned (irp->regcache, |
3584 | irp->regmap[X86_RECORD_REBX_REGNUM], | |
60a1502a MS |
3585 | &offset64); |
3586 | *addr = (uint32_t) (*addr + offset64); | |
cf648174 HZ |
3587 | regcache_raw_read_unsigned (irp->regcache, |
3588 | irp->regmap[X86_RECORD_REDI_REGNUM], | |
60a1502a MS |
3589 | &offset64); |
3590 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3591 | break; |
3592 | case 2: | |
cf648174 HZ |
3593 | regcache_raw_read_unsigned (irp->regcache, |
3594 | irp->regmap[X86_RECORD_REBP_REGNUM], | |
60a1502a MS |
3595 | &offset64); |
3596 | *addr = (uint32_t) (*addr + offset64); | |
cf648174 HZ |
3597 | regcache_raw_read_unsigned (irp->regcache, |
3598 | irp->regmap[X86_RECORD_RESI_REGNUM], | |
60a1502a MS |
3599 | &offset64); |
3600 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3601 | break; |
3602 | case 3: | |
cf648174 HZ |
3603 | regcache_raw_read_unsigned (irp->regcache, |
3604 | irp->regmap[X86_RECORD_REBP_REGNUM], | |
60a1502a MS |
3605 | &offset64); |
3606 | *addr = (uint32_t) (*addr + offset64); | |
cf648174 HZ |
3607 | regcache_raw_read_unsigned (irp->regcache, |
3608 | irp->regmap[X86_RECORD_REDI_REGNUM], | |
60a1502a MS |
3609 | &offset64); |
3610 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3611 | break; |
3612 | case 4: | |
cf648174 HZ |
3613 | regcache_raw_read_unsigned (irp->regcache, |
3614 | irp->regmap[X86_RECORD_RESI_REGNUM], | |
60a1502a MS |
3615 | &offset64); |
3616 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3617 | break; |
3618 | case 5: | |
cf648174 HZ |
3619 | regcache_raw_read_unsigned (irp->regcache, |
3620 | irp->regmap[X86_RECORD_REDI_REGNUM], | |
60a1502a MS |
3621 | &offset64); |
3622 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3623 | break; |
3624 | case 6: | |
cf648174 HZ |
3625 | regcache_raw_read_unsigned (irp->regcache, |
3626 | irp->regmap[X86_RECORD_REBP_REGNUM], | |
60a1502a MS |
3627 | &offset64); |
3628 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3629 | break; |
3630 | case 7: | |
cf648174 HZ |
3631 | regcache_raw_read_unsigned (irp->regcache, |
3632 | irp->regmap[X86_RECORD_REBX_REGNUM], | |
60a1502a MS |
3633 | &offset64); |
3634 | *addr = (uint32_t) (*addr + offset64); | |
7ad10968 HZ |
3635 | break; |
3636 | } | |
3637 | *addr &= 0xffff; | |
3638 | } | |
c4fc7f1b | 3639 | |
01fe1b41 | 3640 | no_rm: |
7ad10968 HZ |
3641 | return 0; |
3642 | } | |
c4fc7f1b | 3643 | |
7ad10968 HZ |
3644 | /* Record the value of the memory that willbe changed in current instruction |
3645 | to "record_arch_list". | |
1777feb0 | 3646 | Return -1 if something wrong. */ |
356a6b3e | 3647 | |
7ad10968 HZ |
3648 | static int |
3649 | i386_record_lea_modrm (struct i386_record_s *irp) | |
3650 | { | |
cf648174 HZ |
3651 | struct gdbarch *gdbarch = irp->gdbarch; |
3652 | uint64_t addr; | |
356a6b3e | 3653 | |
d7877f7e | 3654 | if (irp->override >= 0) |
7ad10968 | 3655 | { |
bb08c432 HZ |
3656 | if (record_memory_query) |
3657 | { | |
3658 | int q; | |
3659 | ||
3660 | target_terminal_ours (); | |
3661 | q = yquery (_("\ | |
3662 | Process record ignores the memory change of instruction at address %s\n\ | |
3663 | because it can't get the value of the segment register.\n\ | |
3664 | Do you want to stop the program?"), | |
3665 | paddress (gdbarch, irp->orig_addr)); | |
3666 | target_terminal_inferior (); | |
3667 | if (q) | |
3668 | return -1; | |
3669 | } | |
3670 | ||
7ad10968 HZ |
3671 | return 0; |
3672 | } | |
61113f8b | 3673 | |
7ad10968 HZ |
3674 | if (i386_record_lea_modrm_addr (irp, &addr)) |
3675 | return -1; | |
96297dab | 3676 | |
7ad10968 HZ |
3677 | if (record_arch_list_add_mem (addr, 1 << irp->ot)) |
3678 | return -1; | |
a62cc96e | 3679 | |
7ad10968 HZ |
3680 | return 0; |
3681 | } | |
b6197528 | 3682 | |
cf648174 | 3683 | /* Record the push operation to "record_arch_list". |
1777feb0 | 3684 | Return -1 if something wrong. */ |
cf648174 HZ |
3685 | |
3686 | static int | |
3687 | i386_record_push (struct i386_record_s *irp, int size) | |
3688 | { | |
648d0c8b | 3689 | ULONGEST addr; |
cf648174 HZ |
3690 | |
3691 | if (record_arch_list_add_reg (irp->regcache, | |
3692 | irp->regmap[X86_RECORD_RESP_REGNUM])) | |
3693 | return -1; | |
3694 | regcache_raw_read_unsigned (irp->regcache, | |
3695 | irp->regmap[X86_RECORD_RESP_REGNUM], | |
648d0c8b MS |
3696 | &addr); |
3697 | if (record_arch_list_add_mem ((CORE_ADDR) addr - size, size)) | |
cf648174 HZ |
3698 | return -1; |
3699 | ||
3700 | return 0; | |
3701 | } | |
3702 | ||
0289bdd7 MS |
3703 | |
3704 | /* Defines contents to record. */ | |
3705 | #define I386_SAVE_FPU_REGS 0xfffd | |
3706 | #define I386_SAVE_FPU_ENV 0xfffe | |
3707 | #define I386_SAVE_FPU_ENV_REG_STACK 0xffff | |
3708 | ||
1777feb0 MS |
3709 | /* Record the value of floating point registers which will be changed |
3710 | by the current instruction to "record_arch_list". Return -1 if | |
3711 | something is wrong. */ | |
0289bdd7 MS |
3712 | |
3713 | static int i386_record_floats (struct gdbarch *gdbarch, | |
3714 | struct i386_record_s *ir, | |
3715 | uint32_t iregnum) | |
3716 | { | |
3717 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
3718 | int i; | |
3719 | ||
3720 | /* Oza: Because of floating point insn push/pop of fpu stack is going to | |
3721 | happen. Currently we store st0-st7 registers, but we need not store all | |
3722 | registers all the time, in future we use ftag register and record only | |
3723 | those who are not marked as an empty. */ | |
3724 | ||
3725 | if (I386_SAVE_FPU_REGS == iregnum) | |
3726 | { | |
3727 | for (i = I387_ST0_REGNUM (tdep); i <= I387_ST0_REGNUM (tdep) + 7; i++) | |
3728 | { | |
3729 | if (record_arch_list_add_reg (ir->regcache, i)) | |
3730 | return -1; | |
3731 | } | |
3732 | } | |
3733 | else if (I386_SAVE_FPU_ENV == iregnum) | |
3734 | { | |
3735 | for (i = I387_FCTRL_REGNUM (tdep); i <= I387_FOP_REGNUM (tdep); i++) | |
3736 | { | |
3737 | if (record_arch_list_add_reg (ir->regcache, i)) | |
3738 | return -1; | |
3739 | } | |
3740 | } | |
3741 | else if (I386_SAVE_FPU_ENV_REG_STACK == iregnum) | |
3742 | { | |
3743 | for (i = I387_ST0_REGNUM (tdep); i <= I387_FOP_REGNUM (tdep); i++) | |
3744 | { | |
3745 | if (record_arch_list_add_reg (ir->regcache, i)) | |
3746 | return -1; | |
3747 | } | |
3748 | } | |
3749 | else if ((iregnum >= I387_ST0_REGNUM (tdep)) && | |
3750 | (iregnum <= I387_FOP_REGNUM (tdep))) | |
3751 | { | |
3752 | if (record_arch_list_add_reg (ir->regcache,iregnum)) | |
3753 | return -1; | |
3754 | } | |
3755 | else | |
3756 | { | |
3757 | /* Parameter error. */ | |
3758 | return -1; | |
3759 | } | |
3760 | if(I386_SAVE_FPU_ENV != iregnum) | |
3761 | { | |
3762 | for (i = I387_FCTRL_REGNUM (tdep); i <= I387_FOP_REGNUM (tdep); i++) | |
3763 | { | |
3764 | if (record_arch_list_add_reg (ir->regcache, i)) | |
3765 | return -1; | |
3766 | } | |
3767 | } | |
3768 | return 0; | |
3769 | } | |
3770 | ||
7ad10968 HZ |
3771 | /* Parse the current instruction and record the values of the registers and |
3772 | memory that will be changed in current instruction to "record_arch_list". | |
1777feb0 | 3773 | Return -1 if something wrong. */ |
8201327c | 3774 | |
cf648174 HZ |
3775 | #define I386_RECORD_ARCH_LIST_ADD_REG(regnum) \ |
3776 | record_arch_list_add_reg (ir.regcache, ir.regmap[(regnum)]) | |
3777 | ||
a6b808b4 | 3778 | int |
7ad10968 | 3779 | i386_process_record (struct gdbarch *gdbarch, struct regcache *regcache, |
648d0c8b | 3780 | CORE_ADDR input_addr) |
7ad10968 | 3781 | { |
60a1502a | 3782 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
7ad10968 | 3783 | int prefixes = 0; |
580879fc | 3784 | int regnum = 0; |
425b824a MS |
3785 | uint32_t opcode; |
3786 | uint8_t opcode8; | |
648d0c8b | 3787 | ULONGEST addr; |
60a1502a | 3788 | gdb_byte buf[MAX_REGISTER_SIZE]; |
7ad10968 | 3789 | struct i386_record_s ir; |
0289bdd7 | 3790 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
cf648174 HZ |
3791 | int rex = 0; |
3792 | uint8_t rex_w = -1; | |
3793 | uint8_t rex_r = 0; | |
7ad10968 | 3794 | |
8408d274 | 3795 | memset (&ir, 0, sizeof (struct i386_record_s)); |
7ad10968 | 3796 | ir.regcache = regcache; |
648d0c8b MS |
3797 | ir.addr = input_addr; |
3798 | ir.orig_addr = input_addr; | |
7ad10968 HZ |
3799 | ir.aflag = 1; |
3800 | ir.dflag = 1; | |
cf648174 HZ |
3801 | ir.override = -1; |
3802 | ir.popl_esp_hack = 0; | |
a3c4230a | 3803 | ir.regmap = tdep->record_regmap; |
cf648174 | 3804 | ir.gdbarch = gdbarch; |
7ad10968 HZ |
3805 | |
3806 | if (record_debug > 1) | |
3807 | fprintf_unfiltered (gdb_stdlog, "Process record: i386_process_record " | |
5af949e3 UW |
3808 | "addr = %s\n", |
3809 | paddress (gdbarch, ir.addr)); | |
7ad10968 HZ |
3810 | |
3811 | /* prefixes */ | |
3812 | while (1) | |
3813 | { | |
425b824a | 3814 | if (target_read_memory (ir.addr, &opcode8, 1)) |
7ad10968 HZ |
3815 | { |
3816 | if (record_debug) | |
3817 | printf_unfiltered (_("Process record: error reading memory at " | |
5af949e3 UW |
3818 | "addr %s len = 1.\n"), |
3819 | paddress (gdbarch, ir.addr)); | |
7ad10968 HZ |
3820 | return -1; |
3821 | } | |
3822 | ir.addr++; | |
425b824a | 3823 | switch (opcode8) /* Instruction prefixes */ |
7ad10968 | 3824 | { |
01fe1b41 | 3825 | case REPE_PREFIX_OPCODE: |
7ad10968 HZ |
3826 | prefixes |= PREFIX_REPZ; |
3827 | break; | |
01fe1b41 | 3828 | case REPNE_PREFIX_OPCODE: |
7ad10968 HZ |
3829 | prefixes |= PREFIX_REPNZ; |
3830 | break; | |
01fe1b41 | 3831 | case LOCK_PREFIX_OPCODE: |
7ad10968 HZ |
3832 | prefixes |= PREFIX_LOCK; |
3833 | break; | |
01fe1b41 | 3834 | case CS_PREFIX_OPCODE: |
cf648174 | 3835 | ir.override = X86_RECORD_CS_REGNUM; |
7ad10968 | 3836 | break; |
01fe1b41 | 3837 | case SS_PREFIX_OPCODE: |
cf648174 | 3838 | ir.override = X86_RECORD_SS_REGNUM; |
7ad10968 | 3839 | break; |
01fe1b41 | 3840 | case DS_PREFIX_OPCODE: |
cf648174 | 3841 | ir.override = X86_RECORD_DS_REGNUM; |
7ad10968 | 3842 | break; |
01fe1b41 | 3843 | case ES_PREFIX_OPCODE: |
cf648174 | 3844 | ir.override = X86_RECORD_ES_REGNUM; |
7ad10968 | 3845 | break; |
01fe1b41 | 3846 | case FS_PREFIX_OPCODE: |
cf648174 | 3847 | ir.override = X86_RECORD_FS_REGNUM; |
7ad10968 | 3848 | break; |
01fe1b41 | 3849 | case GS_PREFIX_OPCODE: |
cf648174 | 3850 | ir.override = X86_RECORD_GS_REGNUM; |
7ad10968 | 3851 | break; |
01fe1b41 | 3852 | case DATA_PREFIX_OPCODE: |
7ad10968 HZ |
3853 | prefixes |= PREFIX_DATA; |
3854 | break; | |
01fe1b41 | 3855 | case ADDR_PREFIX_OPCODE: |
7ad10968 HZ |
3856 | prefixes |= PREFIX_ADDR; |
3857 | break; | |
d691bec7 MS |
3858 | case 0x40: /* i386 inc %eax */ |
3859 | case 0x41: /* i386 inc %ecx */ | |
3860 | case 0x42: /* i386 inc %edx */ | |
3861 | case 0x43: /* i386 inc %ebx */ | |
3862 | case 0x44: /* i386 inc %esp */ | |
3863 | case 0x45: /* i386 inc %ebp */ | |
3864 | case 0x46: /* i386 inc %esi */ | |
3865 | case 0x47: /* i386 inc %edi */ | |
3866 | case 0x48: /* i386 dec %eax */ | |
3867 | case 0x49: /* i386 dec %ecx */ | |
3868 | case 0x4a: /* i386 dec %edx */ | |
3869 | case 0x4b: /* i386 dec %ebx */ | |
3870 | case 0x4c: /* i386 dec %esp */ | |
3871 | case 0x4d: /* i386 dec %ebp */ | |
3872 | case 0x4e: /* i386 dec %esi */ | |
3873 | case 0x4f: /* i386 dec %edi */ | |
3874 | if (ir.regmap[X86_RECORD_R8_REGNUM]) /* 64 bit target */ | |
cf648174 HZ |
3875 | { |
3876 | /* REX */ | |
3877 | rex = 1; | |
425b824a MS |
3878 | rex_w = (opcode8 >> 3) & 1; |
3879 | rex_r = (opcode8 & 0x4) << 1; | |
3880 | ir.rex_x = (opcode8 & 0x2) << 2; | |
3881 | ir.rex_b = (opcode8 & 0x1) << 3; | |
cf648174 | 3882 | } |
d691bec7 MS |
3883 | else /* 32 bit target */ |
3884 | goto out_prefixes; | |
cf648174 | 3885 | break; |
7ad10968 HZ |
3886 | default: |
3887 | goto out_prefixes; | |
3888 | break; | |
3889 | } | |
3890 | } | |
01fe1b41 | 3891 | out_prefixes: |
cf648174 HZ |
3892 | if (ir.regmap[X86_RECORD_R8_REGNUM] && rex_w == 1) |
3893 | { | |
3894 | ir.dflag = 2; | |
3895 | } | |
3896 | else | |
3897 | { | |
3898 | if (prefixes & PREFIX_DATA) | |
3899 | ir.dflag ^= 1; | |
3900 | } | |
7ad10968 HZ |
3901 | if (prefixes & PREFIX_ADDR) |
3902 | ir.aflag ^= 1; | |
cf648174 HZ |
3903 | else if (ir.regmap[X86_RECORD_R8_REGNUM]) |
3904 | ir.aflag = 2; | |
7ad10968 | 3905 | |
1777feb0 | 3906 | /* Now check op code. */ |
425b824a | 3907 | opcode = (uint32_t) opcode8; |
01fe1b41 | 3908 | reswitch: |
7ad10968 HZ |
3909 | switch (opcode) |
3910 | { | |
3911 | case 0x0f: | |
425b824a | 3912 | if (target_read_memory (ir.addr, &opcode8, 1)) |
7ad10968 HZ |
3913 | { |
3914 | if (record_debug) | |
3915 | printf_unfiltered (_("Process record: error reading memory at " | |
5af949e3 UW |
3916 | "addr %s len = 1.\n"), |
3917 | paddress (gdbarch, ir.addr)); | |
7ad10968 HZ |
3918 | return -1; |
3919 | } | |
3920 | ir.addr++; | |
a3c4230a | 3921 | opcode = (uint32_t) opcode8 | 0x0f00; |
7ad10968 HZ |
3922 | goto reswitch; |
3923 | break; | |
93924b6b | 3924 | |
a38bba38 | 3925 | case 0x00: /* arith & logic */ |
7ad10968 HZ |
3926 | case 0x01: |
3927 | case 0x02: | |
3928 | case 0x03: | |
3929 | case 0x04: | |
3930 | case 0x05: | |
3931 | case 0x08: | |
3932 | case 0x09: | |
3933 | case 0x0a: | |
3934 | case 0x0b: | |
3935 | case 0x0c: | |
3936 | case 0x0d: | |
3937 | case 0x10: | |
3938 | case 0x11: | |
3939 | case 0x12: | |
3940 | case 0x13: | |
3941 | case 0x14: | |
3942 | case 0x15: | |
3943 | case 0x18: | |
3944 | case 0x19: | |
3945 | case 0x1a: | |
3946 | case 0x1b: | |
3947 | case 0x1c: | |
3948 | case 0x1d: | |
3949 | case 0x20: | |
3950 | case 0x21: | |
3951 | case 0x22: | |
3952 | case 0x23: | |
3953 | case 0x24: | |
3954 | case 0x25: | |
3955 | case 0x28: | |
3956 | case 0x29: | |
3957 | case 0x2a: | |
3958 | case 0x2b: | |
3959 | case 0x2c: | |
3960 | case 0x2d: | |
3961 | case 0x30: | |
3962 | case 0x31: | |
3963 | case 0x32: | |
3964 | case 0x33: | |
3965 | case 0x34: | |
3966 | case 0x35: | |
3967 | case 0x38: | |
3968 | case 0x39: | |
3969 | case 0x3a: | |
3970 | case 0x3b: | |
3971 | case 0x3c: | |
3972 | case 0x3d: | |
3973 | if (((opcode >> 3) & 7) != OP_CMPL) | |
3974 | { | |
3975 | if ((opcode & 1) == 0) | |
3976 | ir.ot = OT_BYTE; | |
3977 | else | |
3978 | ir.ot = ir.dflag + OT_WORD; | |
93924b6b | 3979 | |
7ad10968 HZ |
3980 | switch ((opcode >> 1) & 3) |
3981 | { | |
a38bba38 | 3982 | case 0: /* OP Ev, Gv */ |
7ad10968 HZ |
3983 | if (i386_record_modrm (&ir)) |
3984 | return -1; | |
3985 | if (ir.mod != 3) | |
3986 | { | |
3987 | if (i386_record_lea_modrm (&ir)) | |
3988 | return -1; | |
3989 | } | |
3990 | else | |
3991 | { | |
cf648174 HZ |
3992 | ir.rm |= ir.rex_b; |
3993 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 3994 | ir.rm &= 0x3; |
cf648174 | 3995 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); |
7ad10968 HZ |
3996 | } |
3997 | break; | |
a38bba38 | 3998 | case 1: /* OP Gv, Ev */ |
7ad10968 HZ |
3999 | if (i386_record_modrm (&ir)) |
4000 | return -1; | |
cf648174 HZ |
4001 | ir.reg |= rex_r; |
4002 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4003 | ir.reg &= 0x3; |
cf648174 | 4004 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
7ad10968 | 4005 | break; |
a38bba38 | 4006 | case 2: /* OP A, Iv */ |
cf648174 | 4007 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
7ad10968 HZ |
4008 | break; |
4009 | } | |
4010 | } | |
cf648174 | 4011 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 4012 | break; |
42fdc8df | 4013 | |
a38bba38 | 4014 | case 0x80: /* GRP1 */ |
7ad10968 HZ |
4015 | case 0x81: |
4016 | case 0x82: | |
4017 | case 0x83: | |
4018 | if (i386_record_modrm (&ir)) | |
4019 | return -1; | |
8201327c | 4020 | |
7ad10968 HZ |
4021 | if (ir.reg != OP_CMPL) |
4022 | { | |
4023 | if ((opcode & 1) == 0) | |
4024 | ir.ot = OT_BYTE; | |
4025 | else | |
4026 | ir.ot = ir.dflag + OT_WORD; | |
28fc6740 | 4027 | |
7ad10968 HZ |
4028 | if (ir.mod != 3) |
4029 | { | |
cf648174 HZ |
4030 | if (opcode == 0x83) |
4031 | ir.rip_offset = 1; | |
4032 | else | |
4033 | ir.rip_offset = (ir.ot > OT_LONG) ? 4 : (1 << ir.ot); | |
7ad10968 HZ |
4034 | if (i386_record_lea_modrm (&ir)) |
4035 | return -1; | |
4036 | } | |
4037 | else | |
cf648174 | 4038 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); |
7ad10968 | 4039 | } |
cf648174 | 4040 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 4041 | break; |
5e3397bb | 4042 | |
a38bba38 | 4043 | case 0x40: /* inc */ |
7ad10968 HZ |
4044 | case 0x41: |
4045 | case 0x42: | |
4046 | case 0x43: | |
4047 | case 0x44: | |
4048 | case 0x45: | |
4049 | case 0x46: | |
4050 | case 0x47: | |
a38bba38 MS |
4051 | |
4052 | case 0x48: /* dec */ | |
7ad10968 HZ |
4053 | case 0x49: |
4054 | case 0x4a: | |
4055 | case 0x4b: | |
4056 | case 0x4c: | |
4057 | case 0x4d: | |
4058 | case 0x4e: | |
4059 | case 0x4f: | |
a38bba38 | 4060 | |
cf648174 HZ |
4061 | I386_RECORD_ARCH_LIST_ADD_REG (opcode & 7); |
4062 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 | 4063 | break; |
acd5c798 | 4064 | |
a38bba38 | 4065 | case 0xf6: /* GRP3 */ |
7ad10968 HZ |
4066 | case 0xf7: |
4067 | if ((opcode & 1) == 0) | |
4068 | ir.ot = OT_BYTE; | |
4069 | else | |
4070 | ir.ot = ir.dflag + OT_WORD; | |
4071 | if (i386_record_modrm (&ir)) | |
4072 | return -1; | |
acd5c798 | 4073 | |
cf648174 HZ |
4074 | if (ir.mod != 3 && ir.reg == 0) |
4075 | ir.rip_offset = (ir.ot > OT_LONG) ? 4 : (1 << ir.ot); | |
4076 | ||
7ad10968 HZ |
4077 | switch (ir.reg) |
4078 | { | |
a38bba38 | 4079 | case 0: /* test */ |
cf648174 | 4080 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 4081 | break; |
a38bba38 MS |
4082 | case 2: /* not */ |
4083 | case 3: /* neg */ | |
7ad10968 HZ |
4084 | if (ir.mod != 3) |
4085 | { | |
4086 | if (i386_record_lea_modrm (&ir)) | |
4087 | return -1; | |
4088 | } | |
4089 | else | |
4090 | { | |
cf648174 HZ |
4091 | ir.rm |= ir.rex_b; |
4092 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4093 | ir.rm &= 0x3; |
cf648174 | 4094 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); |
7ad10968 | 4095 | } |
a38bba38 | 4096 | if (ir.reg == 3) /* neg */ |
cf648174 | 4097 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 4098 | break; |
a38bba38 MS |
4099 | case 4: /* mul */ |
4100 | case 5: /* imul */ | |
4101 | case 6: /* div */ | |
4102 | case 7: /* idiv */ | |
cf648174 | 4103 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
7ad10968 | 4104 | if (ir.ot != OT_BYTE) |
cf648174 HZ |
4105 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM); |
4106 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4107 | break; |
4108 | default: | |
4109 | ir.addr -= 2; | |
4110 | opcode = opcode << 8 | ir.modrm; | |
4111 | goto no_support; | |
4112 | break; | |
4113 | } | |
4114 | break; | |
4115 | ||
a38bba38 MS |
4116 | case 0xfe: /* GRP4 */ |
4117 | case 0xff: /* GRP5 */ | |
7ad10968 HZ |
4118 | if (i386_record_modrm (&ir)) |
4119 | return -1; | |
4120 | if (ir.reg >= 2 && opcode == 0xfe) | |
4121 | { | |
4122 | ir.addr -= 2; | |
4123 | opcode = opcode << 8 | ir.modrm; | |
4124 | goto no_support; | |
4125 | } | |
7ad10968 HZ |
4126 | switch (ir.reg) |
4127 | { | |
a38bba38 MS |
4128 | case 0: /* inc */ |
4129 | case 1: /* dec */ | |
cf648174 HZ |
4130 | if ((opcode & 1) == 0) |
4131 | ir.ot = OT_BYTE; | |
4132 | else | |
4133 | ir.ot = ir.dflag + OT_WORD; | |
7ad10968 HZ |
4134 | if (ir.mod != 3) |
4135 | { | |
4136 | if (i386_record_lea_modrm (&ir)) | |
4137 | return -1; | |
4138 | } | |
4139 | else | |
4140 | { | |
cf648174 HZ |
4141 | ir.rm |= ir.rex_b; |
4142 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4143 | ir.rm &= 0x3; |
cf648174 | 4144 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); |
7ad10968 | 4145 | } |
cf648174 | 4146 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 4147 | break; |
a38bba38 | 4148 | case 2: /* call */ |
cf648174 HZ |
4149 | if (ir.regmap[X86_RECORD_R8_REGNUM] && ir.dflag) |
4150 | ir.dflag = 2; | |
4151 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
7ad10968 | 4152 | return -1; |
cf648174 | 4153 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 4154 | break; |
a38bba38 | 4155 | case 3: /* lcall */ |
cf648174 HZ |
4156 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_CS_REGNUM); |
4157 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
7ad10968 | 4158 | return -1; |
cf648174 | 4159 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 4160 | break; |
a38bba38 MS |
4161 | case 4: /* jmp */ |
4162 | case 5: /* ljmp */ | |
cf648174 HZ |
4163 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
4164 | break; | |
a38bba38 | 4165 | case 6: /* push */ |
cf648174 HZ |
4166 | if (ir.regmap[X86_RECORD_R8_REGNUM] && ir.dflag) |
4167 | ir.dflag = 2; | |
4168 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
4169 | return -1; | |
7ad10968 HZ |
4170 | break; |
4171 | default: | |
4172 | ir.addr -= 2; | |
4173 | opcode = opcode << 8 | ir.modrm; | |
4174 | goto no_support; | |
4175 | break; | |
4176 | } | |
4177 | break; | |
4178 | ||
a38bba38 | 4179 | case 0x84: /* test */ |
7ad10968 HZ |
4180 | case 0x85: |
4181 | case 0xa8: | |
4182 | case 0xa9: | |
cf648174 | 4183 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
4184 | break; |
4185 | ||
a38bba38 | 4186 | case 0x98: /* CWDE/CBW */ |
cf648174 | 4187 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
7ad10968 HZ |
4188 | break; |
4189 | ||
a38bba38 | 4190 | case 0x99: /* CDQ/CWD */ |
cf648174 HZ |
4191 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
4192 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM); | |
7ad10968 HZ |
4193 | break; |
4194 | ||
a38bba38 | 4195 | case 0x0faf: /* imul */ |
7ad10968 HZ |
4196 | case 0x69: |
4197 | case 0x6b: | |
4198 | ir.ot = ir.dflag + OT_WORD; | |
4199 | if (i386_record_modrm (&ir)) | |
4200 | return -1; | |
cf648174 HZ |
4201 | if (opcode == 0x69) |
4202 | ir.rip_offset = (ir.ot > OT_LONG) ? 4 : (1 << ir.ot); | |
4203 | else if (opcode == 0x6b) | |
4204 | ir.rip_offset = 1; | |
4205 | ir.reg |= rex_r; | |
4206 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4207 | ir.reg &= 0x3; |
cf648174 HZ |
4208 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
4209 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4210 | break; |
4211 | ||
a38bba38 | 4212 | case 0x0fc0: /* xadd */ |
7ad10968 HZ |
4213 | case 0x0fc1: |
4214 | if ((opcode & 1) == 0) | |
4215 | ir.ot = OT_BYTE; | |
4216 | else | |
4217 | ir.ot = ir.dflag + OT_WORD; | |
4218 | if (i386_record_modrm (&ir)) | |
4219 | return -1; | |
cf648174 | 4220 | ir.reg |= rex_r; |
7ad10968 HZ |
4221 | if (ir.mod == 3) |
4222 | { | |
cf648174 | 4223 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) |
7ad10968 | 4224 | ir.reg &= 0x3; |
cf648174 HZ |
4225 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
4226 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4227 | ir.rm &= 0x3; |
cf648174 | 4228 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); |
7ad10968 HZ |
4229 | } |
4230 | else | |
4231 | { | |
4232 | if (i386_record_lea_modrm (&ir)) | |
4233 | return -1; | |
cf648174 | 4234 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) |
7ad10968 | 4235 | ir.reg &= 0x3; |
cf648174 | 4236 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
7ad10968 | 4237 | } |
cf648174 | 4238 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
4239 | break; |
4240 | ||
a38bba38 | 4241 | case 0x0fb0: /* cmpxchg */ |
7ad10968 HZ |
4242 | case 0x0fb1: |
4243 | if ((opcode & 1) == 0) | |
4244 | ir.ot = OT_BYTE; | |
4245 | else | |
4246 | ir.ot = ir.dflag + OT_WORD; | |
4247 | if (i386_record_modrm (&ir)) | |
4248 | return -1; | |
4249 | if (ir.mod == 3) | |
4250 | { | |
cf648174 HZ |
4251 | ir.reg |= rex_r; |
4252 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); | |
4253 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4254 | ir.reg &= 0x3; |
cf648174 | 4255 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
7ad10968 HZ |
4256 | } |
4257 | else | |
4258 | { | |
cf648174 | 4259 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
7ad10968 HZ |
4260 | if (i386_record_lea_modrm (&ir)) |
4261 | return -1; | |
4262 | } | |
cf648174 | 4263 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
4264 | break; |
4265 | ||
a38bba38 | 4266 | case 0x0fc7: /* cmpxchg8b */ |
7ad10968 HZ |
4267 | if (i386_record_modrm (&ir)) |
4268 | return -1; | |
4269 | if (ir.mod == 3) | |
4270 | { | |
4271 | ir.addr -= 2; | |
4272 | opcode = opcode << 8 | ir.modrm; | |
4273 | goto no_support; | |
4274 | } | |
cf648174 HZ |
4275 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
4276 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM); | |
7ad10968 HZ |
4277 | if (i386_record_lea_modrm (&ir)) |
4278 | return -1; | |
cf648174 | 4279 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
4280 | break; |
4281 | ||
a38bba38 | 4282 | case 0x50: /* push */ |
7ad10968 HZ |
4283 | case 0x51: |
4284 | case 0x52: | |
4285 | case 0x53: | |
4286 | case 0x54: | |
4287 | case 0x55: | |
4288 | case 0x56: | |
4289 | case 0x57: | |
4290 | case 0x68: | |
4291 | case 0x6a: | |
cf648174 HZ |
4292 | if (ir.regmap[X86_RECORD_R8_REGNUM] && ir.dflag) |
4293 | ir.dflag = 2; | |
4294 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
4295 | return -1; | |
4296 | break; | |
4297 | ||
a38bba38 MS |
4298 | case 0x06: /* push es */ |
4299 | case 0x0e: /* push cs */ | |
4300 | case 0x16: /* push ss */ | |
4301 | case 0x1e: /* push ds */ | |
cf648174 HZ |
4302 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4303 | { | |
4304 | ir.addr -= 1; | |
4305 | goto no_support; | |
4306 | } | |
4307 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
4308 | return -1; | |
4309 | break; | |
4310 | ||
a38bba38 MS |
4311 | case 0x0fa0: /* push fs */ |
4312 | case 0x0fa8: /* push gs */ | |
cf648174 HZ |
4313 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4314 | { | |
4315 | ir.addr -= 2; | |
4316 | goto no_support; | |
4317 | } | |
4318 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
7ad10968 | 4319 | return -1; |
cf648174 HZ |
4320 | break; |
4321 | ||
a38bba38 | 4322 | case 0x60: /* pusha */ |
cf648174 HZ |
4323 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4324 | { | |
4325 | ir.addr -= 1; | |
4326 | goto no_support; | |
4327 | } | |
4328 | if (i386_record_push (&ir, 1 << (ir.dflag + 4))) | |
7ad10968 HZ |
4329 | return -1; |
4330 | break; | |
4331 | ||
a38bba38 | 4332 | case 0x58: /* pop */ |
7ad10968 HZ |
4333 | case 0x59: |
4334 | case 0x5a: | |
4335 | case 0x5b: | |
4336 | case 0x5c: | |
4337 | case 0x5d: | |
4338 | case 0x5e: | |
4339 | case 0x5f: | |
cf648174 HZ |
4340 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); |
4341 | I386_RECORD_ARCH_LIST_ADD_REG ((opcode & 0x7) | ir.rex_b); | |
7ad10968 HZ |
4342 | break; |
4343 | ||
a38bba38 | 4344 | case 0x61: /* popa */ |
cf648174 HZ |
4345 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4346 | { | |
4347 | ir.addr -= 1; | |
4348 | goto no_support; | |
7ad10968 | 4349 | } |
425b824a MS |
4350 | for (regnum = X86_RECORD_REAX_REGNUM; |
4351 | regnum <= X86_RECORD_REDI_REGNUM; | |
4352 | regnum++) | |
4353 | I386_RECORD_ARCH_LIST_ADD_REG (regnum); | |
7ad10968 HZ |
4354 | break; |
4355 | ||
a38bba38 | 4356 | case 0x8f: /* pop */ |
cf648174 HZ |
4357 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4358 | ir.ot = ir.dflag ? OT_QUAD : OT_WORD; | |
4359 | else | |
4360 | ir.ot = ir.dflag + OT_WORD; | |
7ad10968 HZ |
4361 | if (i386_record_modrm (&ir)) |
4362 | return -1; | |
4363 | if (ir.mod == 3) | |
cf648174 | 4364 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); |
7ad10968 HZ |
4365 | else |
4366 | { | |
cf648174 | 4367 | ir.popl_esp_hack = 1 << ir.ot; |
7ad10968 HZ |
4368 | if (i386_record_lea_modrm (&ir)) |
4369 | return -1; | |
4370 | } | |
cf648174 | 4371 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); |
7ad10968 HZ |
4372 | break; |
4373 | ||
a38bba38 | 4374 | case 0xc8: /* enter */ |
cf648174 HZ |
4375 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REBP_REGNUM); |
4376 | if (ir.regmap[X86_RECORD_R8_REGNUM] && ir.dflag) | |
4377 | ir.dflag = 2; | |
4378 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
7ad10968 HZ |
4379 | return -1; |
4380 | break; | |
4381 | ||
a38bba38 | 4382 | case 0xc9: /* leave */ |
cf648174 HZ |
4383 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); |
4384 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REBP_REGNUM); | |
7ad10968 HZ |
4385 | break; |
4386 | ||
a38bba38 | 4387 | case 0x07: /* pop es */ |
cf648174 HZ |
4388 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4389 | { | |
4390 | ir.addr -= 1; | |
4391 | goto no_support; | |
4392 | } | |
4393 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); | |
4394 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_ES_REGNUM); | |
4395 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4396 | break; |
4397 | ||
a38bba38 | 4398 | case 0x17: /* pop ss */ |
cf648174 HZ |
4399 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4400 | { | |
4401 | ir.addr -= 1; | |
4402 | goto no_support; | |
4403 | } | |
4404 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); | |
4405 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_SS_REGNUM); | |
4406 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4407 | break; |
4408 | ||
a38bba38 | 4409 | case 0x1f: /* pop ds */ |
cf648174 HZ |
4410 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4411 | { | |
4412 | ir.addr -= 1; | |
4413 | goto no_support; | |
4414 | } | |
4415 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); | |
4416 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_DS_REGNUM); | |
4417 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4418 | break; |
4419 | ||
a38bba38 | 4420 | case 0x0fa1: /* pop fs */ |
cf648174 HZ |
4421 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); |
4422 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_FS_REGNUM); | |
4423 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4424 | break; |
4425 | ||
a38bba38 | 4426 | case 0x0fa9: /* pop gs */ |
cf648174 HZ |
4427 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); |
4428 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_GS_REGNUM); | |
4429 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4430 | break; |
4431 | ||
a38bba38 | 4432 | case 0x88: /* mov */ |
7ad10968 HZ |
4433 | case 0x89: |
4434 | case 0xc6: | |
4435 | case 0xc7: | |
4436 | if ((opcode & 1) == 0) | |
4437 | ir.ot = OT_BYTE; | |
4438 | else | |
4439 | ir.ot = ir.dflag + OT_WORD; | |
4440 | ||
4441 | if (i386_record_modrm (&ir)) | |
4442 | return -1; | |
4443 | ||
4444 | if (ir.mod != 3) | |
4445 | { | |
cf648174 HZ |
4446 | if (opcode == 0xc6 || opcode == 0xc7) |
4447 | ir.rip_offset = (ir.ot > OT_LONG) ? 4 : (1 << ir.ot); | |
7ad10968 HZ |
4448 | if (i386_record_lea_modrm (&ir)) |
4449 | return -1; | |
4450 | } | |
4451 | else | |
4452 | { | |
cf648174 HZ |
4453 | if (opcode == 0xc6 || opcode == 0xc7) |
4454 | ir.rm |= ir.rex_b; | |
4455 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4456 | ir.rm &= 0x3; |
cf648174 | 4457 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); |
7ad10968 | 4458 | } |
7ad10968 | 4459 | break; |
cf648174 | 4460 | |
a38bba38 | 4461 | case 0x8a: /* mov */ |
7ad10968 HZ |
4462 | case 0x8b: |
4463 | if ((opcode & 1) == 0) | |
4464 | ir.ot = OT_BYTE; | |
4465 | else | |
4466 | ir.ot = ir.dflag + OT_WORD; | |
7ad10968 HZ |
4467 | if (i386_record_modrm (&ir)) |
4468 | return -1; | |
cf648174 HZ |
4469 | ir.reg |= rex_r; |
4470 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4471 | ir.reg &= 0x3; |
cf648174 HZ |
4472 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
4473 | break; | |
7ad10968 | 4474 | |
a38bba38 | 4475 | case 0x8c: /* mov seg */ |
cf648174 | 4476 | if (i386_record_modrm (&ir)) |
7ad10968 | 4477 | return -1; |
cf648174 HZ |
4478 | if (ir.reg > 5) |
4479 | { | |
4480 | ir.addr -= 2; | |
4481 | opcode = opcode << 8 | ir.modrm; | |
4482 | goto no_support; | |
4483 | } | |
4484 | ||
4485 | if (ir.mod == 3) | |
4486 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); | |
4487 | else | |
4488 | { | |
4489 | ir.ot = OT_WORD; | |
4490 | if (i386_record_lea_modrm (&ir)) | |
4491 | return -1; | |
4492 | } | |
7ad10968 HZ |
4493 | break; |
4494 | ||
a38bba38 | 4495 | case 0x8e: /* mov seg */ |
7ad10968 HZ |
4496 | if (i386_record_modrm (&ir)) |
4497 | return -1; | |
7ad10968 HZ |
4498 | switch (ir.reg) |
4499 | { | |
4500 | case 0: | |
425b824a | 4501 | regnum = X86_RECORD_ES_REGNUM; |
7ad10968 HZ |
4502 | break; |
4503 | case 2: | |
425b824a | 4504 | regnum = X86_RECORD_SS_REGNUM; |
7ad10968 HZ |
4505 | break; |
4506 | case 3: | |
425b824a | 4507 | regnum = X86_RECORD_DS_REGNUM; |
7ad10968 HZ |
4508 | break; |
4509 | case 4: | |
425b824a | 4510 | regnum = X86_RECORD_FS_REGNUM; |
7ad10968 HZ |
4511 | break; |
4512 | case 5: | |
425b824a | 4513 | regnum = X86_RECORD_GS_REGNUM; |
7ad10968 HZ |
4514 | break; |
4515 | default: | |
4516 | ir.addr -= 2; | |
4517 | opcode = opcode << 8 | ir.modrm; | |
4518 | goto no_support; | |
4519 | break; | |
4520 | } | |
425b824a | 4521 | I386_RECORD_ARCH_LIST_ADD_REG (regnum); |
cf648174 | 4522 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
4523 | break; |
4524 | ||
a38bba38 MS |
4525 | case 0x0fb6: /* movzbS */ |
4526 | case 0x0fb7: /* movzwS */ | |
4527 | case 0x0fbe: /* movsbS */ | |
4528 | case 0x0fbf: /* movswS */ | |
7ad10968 HZ |
4529 | if (i386_record_modrm (&ir)) |
4530 | return -1; | |
cf648174 | 4531 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg | rex_r); |
7ad10968 HZ |
4532 | break; |
4533 | ||
a38bba38 | 4534 | case 0x8d: /* lea */ |
7ad10968 HZ |
4535 | if (i386_record_modrm (&ir)) |
4536 | return -1; | |
4537 | if (ir.mod == 3) | |
4538 | { | |
4539 | ir.addr -= 2; | |
4540 | opcode = opcode << 8 | ir.modrm; | |
4541 | goto no_support; | |
4542 | } | |
7ad10968 | 4543 | ir.ot = ir.dflag; |
cf648174 HZ |
4544 | ir.reg |= rex_r; |
4545 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4546 | ir.reg &= 0x3; |
cf648174 | 4547 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
7ad10968 HZ |
4548 | break; |
4549 | ||
a38bba38 | 4550 | case 0xa0: /* mov EAX */ |
7ad10968 | 4551 | case 0xa1: |
a38bba38 MS |
4552 | |
4553 | case 0xd7: /* xlat */ | |
cf648174 | 4554 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
7ad10968 HZ |
4555 | break; |
4556 | ||
a38bba38 | 4557 | case 0xa2: /* mov EAX */ |
7ad10968 | 4558 | case 0xa3: |
d7877f7e | 4559 | if (ir.override >= 0) |
cf648174 | 4560 | { |
bb08c432 HZ |
4561 | if (record_memory_query) |
4562 | { | |
4563 | int q; | |
4564 | ||
4565 | target_terminal_ours (); | |
4566 | q = yquery (_("\ | |
4567 | Process record ignores the memory change of instruction at address %s\n\ | |
4568 | because it can't get the value of the segment register.\n\ | |
4569 | Do you want to stop the program?"), | |
4570 | paddress (gdbarch, ir.orig_addr)); | |
4571 | target_terminal_inferior (); | |
4572 | if (q) | |
4573 | return -1; | |
4574 | } | |
cf648174 HZ |
4575 | } |
4576 | else | |
4577 | { | |
4578 | if ((opcode & 1) == 0) | |
4579 | ir.ot = OT_BYTE; | |
4580 | else | |
4581 | ir.ot = ir.dflag + OT_WORD; | |
4582 | if (ir.aflag == 2) | |
4583 | { | |
60a1502a | 4584 | if (target_read_memory (ir.addr, buf, 8)) |
cf648174 HZ |
4585 | { |
4586 | if (record_debug) | |
4587 | printf_unfiltered (_("Process record: error reading " | |
4588 | "memory at addr 0x%s len = 8.\n"), | |
4589 | paddress (gdbarch, ir.addr)); | |
4590 | return -1; | |
4591 | } | |
4592 | ir.addr += 8; | |
60a1502a | 4593 | addr = extract_unsigned_integer (buf, 8, byte_order); |
cf648174 HZ |
4594 | } |
4595 | else if (ir.aflag) | |
4596 | { | |
60a1502a | 4597 | if (target_read_memory (ir.addr, buf, 4)) |
cf648174 HZ |
4598 | { |
4599 | if (record_debug) | |
4600 | printf_unfiltered (_("Process record: error reading " | |
4601 | "memory at addr 0x%s len = 4.\n"), | |
4602 | paddress (gdbarch, ir.addr)); | |
4603 | return -1; | |
4604 | } | |
4605 | ir.addr += 4; | |
60a1502a | 4606 | addr = extract_unsigned_integer (buf, 4, byte_order); |
cf648174 HZ |
4607 | } |
4608 | else | |
4609 | { | |
60a1502a | 4610 | if (target_read_memory (ir.addr, buf, 2)) |
cf648174 HZ |
4611 | { |
4612 | if (record_debug) | |
4613 | printf_unfiltered (_("Process record: error reading " | |
4614 | "memory at addr 0x%s len = 2.\n"), | |
4615 | paddress (gdbarch, ir.addr)); | |
4616 | return -1; | |
4617 | } | |
4618 | ir.addr += 2; | |
60a1502a | 4619 | addr = extract_unsigned_integer (buf, 2, byte_order); |
cf648174 | 4620 | } |
648d0c8b | 4621 | if (record_arch_list_add_mem (addr, 1 << ir.ot)) |
cf648174 HZ |
4622 | return -1; |
4623 | } | |
7ad10968 HZ |
4624 | break; |
4625 | ||
a38bba38 | 4626 | case 0xb0: /* mov R, Ib */ |
7ad10968 HZ |
4627 | case 0xb1: |
4628 | case 0xb2: | |
4629 | case 0xb3: | |
4630 | case 0xb4: | |
4631 | case 0xb5: | |
4632 | case 0xb6: | |
4633 | case 0xb7: | |
cf648174 HZ |
4634 | I386_RECORD_ARCH_LIST_ADD_REG ((ir.regmap[X86_RECORD_R8_REGNUM]) |
4635 | ? ((opcode & 0x7) | ir.rex_b) | |
4636 | : ((opcode & 0x7) & 0x3)); | |
7ad10968 HZ |
4637 | break; |
4638 | ||
a38bba38 | 4639 | case 0xb8: /* mov R, Iv */ |
7ad10968 HZ |
4640 | case 0xb9: |
4641 | case 0xba: | |
4642 | case 0xbb: | |
4643 | case 0xbc: | |
4644 | case 0xbd: | |
4645 | case 0xbe: | |
4646 | case 0xbf: | |
cf648174 | 4647 | I386_RECORD_ARCH_LIST_ADD_REG ((opcode & 0x7) | ir.rex_b); |
7ad10968 HZ |
4648 | break; |
4649 | ||
a38bba38 | 4650 | case 0x91: /* xchg R, EAX */ |
7ad10968 HZ |
4651 | case 0x92: |
4652 | case 0x93: | |
4653 | case 0x94: | |
4654 | case 0x95: | |
4655 | case 0x96: | |
4656 | case 0x97: | |
cf648174 HZ |
4657 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
4658 | I386_RECORD_ARCH_LIST_ADD_REG (opcode & 0x7); | |
7ad10968 HZ |
4659 | break; |
4660 | ||
a38bba38 | 4661 | case 0x86: /* xchg Ev, Gv */ |
7ad10968 HZ |
4662 | case 0x87: |
4663 | if ((opcode & 1) == 0) | |
4664 | ir.ot = OT_BYTE; | |
4665 | else | |
4666 | ir.ot = ir.dflag + OT_WORD; | |
7ad10968 HZ |
4667 | if (i386_record_modrm (&ir)) |
4668 | return -1; | |
7ad10968 HZ |
4669 | if (ir.mod == 3) |
4670 | { | |
86839d38 | 4671 | ir.rm |= ir.rex_b; |
cf648174 HZ |
4672 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) |
4673 | ir.rm &= 0x3; | |
4674 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); | |
7ad10968 HZ |
4675 | } |
4676 | else | |
4677 | { | |
4678 | if (i386_record_lea_modrm (&ir)) | |
4679 | return -1; | |
4680 | } | |
cf648174 HZ |
4681 | ir.reg |= rex_r; |
4682 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4683 | ir.reg &= 0x3; |
cf648174 | 4684 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
7ad10968 HZ |
4685 | break; |
4686 | ||
a38bba38 MS |
4687 | case 0xc4: /* les Gv */ |
4688 | case 0xc5: /* lds Gv */ | |
cf648174 HZ |
4689 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
4690 | { | |
4691 | ir.addr -= 1; | |
4692 | goto no_support; | |
4693 | } | |
d3f323f3 | 4694 | /* FALLTHROUGH */ |
a38bba38 MS |
4695 | case 0x0fb2: /* lss Gv */ |
4696 | case 0x0fb4: /* lfs Gv */ | |
4697 | case 0x0fb5: /* lgs Gv */ | |
7ad10968 HZ |
4698 | if (i386_record_modrm (&ir)) |
4699 | return -1; | |
4700 | if (ir.mod == 3) | |
4701 | { | |
4702 | if (opcode > 0xff) | |
4703 | ir.addr -= 3; | |
4704 | else | |
4705 | ir.addr -= 2; | |
4706 | opcode = opcode << 8 | ir.modrm; | |
4707 | goto no_support; | |
4708 | } | |
7ad10968 HZ |
4709 | switch (opcode) |
4710 | { | |
a38bba38 | 4711 | case 0xc4: /* les Gv */ |
425b824a | 4712 | regnum = X86_RECORD_ES_REGNUM; |
7ad10968 | 4713 | break; |
a38bba38 | 4714 | case 0xc5: /* lds Gv */ |
425b824a | 4715 | regnum = X86_RECORD_DS_REGNUM; |
7ad10968 | 4716 | break; |
a38bba38 | 4717 | case 0x0fb2: /* lss Gv */ |
425b824a | 4718 | regnum = X86_RECORD_SS_REGNUM; |
7ad10968 | 4719 | break; |
a38bba38 | 4720 | case 0x0fb4: /* lfs Gv */ |
425b824a | 4721 | regnum = X86_RECORD_FS_REGNUM; |
7ad10968 | 4722 | break; |
a38bba38 | 4723 | case 0x0fb5: /* lgs Gv */ |
425b824a | 4724 | regnum = X86_RECORD_GS_REGNUM; |
7ad10968 HZ |
4725 | break; |
4726 | } | |
425b824a | 4727 | I386_RECORD_ARCH_LIST_ADD_REG (regnum); |
cf648174 HZ |
4728 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg | rex_r); |
4729 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
4730 | break; |
4731 | ||
a38bba38 | 4732 | case 0xc0: /* shifts */ |
7ad10968 HZ |
4733 | case 0xc1: |
4734 | case 0xd0: | |
4735 | case 0xd1: | |
4736 | case 0xd2: | |
4737 | case 0xd3: | |
4738 | if ((opcode & 1) == 0) | |
4739 | ir.ot = OT_BYTE; | |
4740 | else | |
4741 | ir.ot = ir.dflag + OT_WORD; | |
7ad10968 HZ |
4742 | if (i386_record_modrm (&ir)) |
4743 | return -1; | |
7ad10968 HZ |
4744 | if (ir.mod != 3 && (opcode == 0xd2 || opcode == 0xd3)) |
4745 | { | |
4746 | if (i386_record_lea_modrm (&ir)) | |
4747 | return -1; | |
4748 | } | |
4749 | else | |
4750 | { | |
cf648174 HZ |
4751 | ir.rm |= ir.rex_b; |
4752 | if (ir.ot == OT_BYTE && !ir.regmap[X86_RECORD_R8_REGNUM]) | |
7ad10968 | 4753 | ir.rm &= 0x3; |
cf648174 | 4754 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm); |
7ad10968 | 4755 | } |
cf648174 | 4756 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
4757 | break; |
4758 | ||
4759 | case 0x0fa4: | |
4760 | case 0x0fa5: | |
4761 | case 0x0fac: | |
4762 | case 0x0fad: | |
4763 | if (i386_record_modrm (&ir)) | |
4764 | return -1; | |
4765 | if (ir.mod == 3) | |
4766 | { | |
4767 | if (record_arch_list_add_reg (ir.regcache, ir.rm)) | |
4768 | return -1; | |
4769 | } | |
4770 | else | |
4771 | { | |
4772 | if (i386_record_lea_modrm (&ir)) | |
4773 | return -1; | |
4774 | } | |
4775 | break; | |
4776 | ||
a38bba38 | 4777 | case 0xd8: /* Floats. */ |
7ad10968 HZ |
4778 | case 0xd9: |
4779 | case 0xda: | |
4780 | case 0xdb: | |
4781 | case 0xdc: | |
4782 | case 0xdd: | |
4783 | case 0xde: | |
4784 | case 0xdf: | |
4785 | if (i386_record_modrm (&ir)) | |
4786 | return -1; | |
4787 | ir.reg |= ((opcode & 7) << 3); | |
4788 | if (ir.mod != 3) | |
4789 | { | |
1777feb0 | 4790 | /* Memory. */ |
955db0c0 | 4791 | uint64_t addr64; |
7ad10968 | 4792 | |
955db0c0 | 4793 | if (i386_record_lea_modrm_addr (&ir, &addr64)) |
7ad10968 HZ |
4794 | return -1; |
4795 | switch (ir.reg) | |
4796 | { | |
7ad10968 | 4797 | case 0x02: |
0289bdd7 MS |
4798 | case 0x12: |
4799 | case 0x22: | |
4800 | case 0x32: | |
4801 | /* For fcom, ficom nothing to do. */ | |
4802 | break; | |
7ad10968 | 4803 | case 0x03: |
0289bdd7 MS |
4804 | case 0x13: |
4805 | case 0x23: | |
4806 | case 0x33: | |
4807 | /* For fcomp, ficomp pop FPU stack, store all. */ | |
4808 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_REGS)) | |
4809 | return -1; | |
4810 | break; | |
4811 | case 0x00: | |
4812 | case 0x01: | |
7ad10968 HZ |
4813 | case 0x04: |
4814 | case 0x05: | |
4815 | case 0x06: | |
4816 | case 0x07: | |
4817 | case 0x10: | |
4818 | case 0x11: | |
7ad10968 HZ |
4819 | case 0x14: |
4820 | case 0x15: | |
4821 | case 0x16: | |
4822 | case 0x17: | |
4823 | case 0x20: | |
4824 | case 0x21: | |
7ad10968 HZ |
4825 | case 0x24: |
4826 | case 0x25: | |
4827 | case 0x26: | |
4828 | case 0x27: | |
4829 | case 0x30: | |
4830 | case 0x31: | |
7ad10968 HZ |
4831 | case 0x34: |
4832 | case 0x35: | |
4833 | case 0x36: | |
4834 | case 0x37: | |
0289bdd7 MS |
4835 | /* For fadd, fmul, fsub, fsubr, fdiv, fdivr, fiadd, fimul, |
4836 | fisub, fisubr, fidiv, fidivr, modR/M.reg is an extension | |
4837 | of code, always affects st(0) register. */ | |
4838 | if (i386_record_floats (gdbarch, &ir, I387_ST0_REGNUM (tdep))) | |
4839 | return -1; | |
7ad10968 HZ |
4840 | break; |
4841 | case 0x08: | |
4842 | case 0x0a: | |
4843 | case 0x0b: | |
4844 | case 0x18: | |
4845 | case 0x19: | |
4846 | case 0x1a: | |
4847 | case 0x1b: | |
0289bdd7 | 4848 | case 0x1d: |
7ad10968 HZ |
4849 | case 0x28: |
4850 | case 0x29: | |
4851 | case 0x2a: | |
4852 | case 0x2b: | |
4853 | case 0x38: | |
4854 | case 0x39: | |
4855 | case 0x3a: | |
4856 | case 0x3b: | |
0289bdd7 MS |
4857 | case 0x3c: |
4858 | case 0x3d: | |
7ad10968 HZ |
4859 | switch (ir.reg & 7) |
4860 | { | |
4861 | case 0: | |
0289bdd7 MS |
4862 | /* Handling fld, fild. */ |
4863 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_REGS)) | |
4864 | return -1; | |
7ad10968 HZ |
4865 | break; |
4866 | case 1: | |
4867 | switch (ir.reg >> 4) | |
4868 | { | |
4869 | case 0: | |
955db0c0 | 4870 | if (record_arch_list_add_mem (addr64, 4)) |
7ad10968 HZ |
4871 | return -1; |
4872 | break; | |
4873 | case 2: | |
955db0c0 | 4874 | if (record_arch_list_add_mem (addr64, 8)) |
7ad10968 HZ |
4875 | return -1; |
4876 | break; | |
4877 | case 3: | |
0289bdd7 | 4878 | break; |
7ad10968 | 4879 | default: |
955db0c0 | 4880 | if (record_arch_list_add_mem (addr64, 2)) |
7ad10968 HZ |
4881 | return -1; |
4882 | break; | |
4883 | } | |
4884 | break; | |
4885 | default: | |
4886 | switch (ir.reg >> 4) | |
4887 | { | |
4888 | case 0: | |
955db0c0 | 4889 | if (record_arch_list_add_mem (addr64, 4)) |
0289bdd7 MS |
4890 | return -1; |
4891 | if (3 == (ir.reg & 7)) | |
4892 | { | |
4893 | /* For fstp m32fp. */ | |
4894 | if (i386_record_floats (gdbarch, &ir, | |
4895 | I386_SAVE_FPU_REGS)) | |
4896 | return -1; | |
4897 | } | |
4898 | break; | |
7ad10968 | 4899 | case 1: |
955db0c0 | 4900 | if (record_arch_list_add_mem (addr64, 4)) |
7ad10968 | 4901 | return -1; |
0289bdd7 MS |
4902 | if ((3 == (ir.reg & 7)) |
4903 | || (5 == (ir.reg & 7)) | |
4904 | || (7 == (ir.reg & 7))) | |
4905 | { | |
4906 | /* For fstp insn. */ | |
4907 | if (i386_record_floats (gdbarch, &ir, | |
4908 | I386_SAVE_FPU_REGS)) | |
4909 | return -1; | |
4910 | } | |
7ad10968 HZ |
4911 | break; |
4912 | case 2: | |
955db0c0 | 4913 | if (record_arch_list_add_mem (addr64, 8)) |
7ad10968 | 4914 | return -1; |
0289bdd7 MS |
4915 | if (3 == (ir.reg & 7)) |
4916 | { | |
4917 | /* For fstp m64fp. */ | |
4918 | if (i386_record_floats (gdbarch, &ir, | |
4919 | I386_SAVE_FPU_REGS)) | |
4920 | return -1; | |
4921 | } | |
7ad10968 HZ |
4922 | break; |
4923 | case 3: | |
0289bdd7 MS |
4924 | if ((3 <= (ir.reg & 7)) && (6 <= (ir.reg & 7))) |
4925 | { | |
4926 | /* For fistp, fbld, fild, fbstp. */ | |
4927 | if (i386_record_floats (gdbarch, &ir, | |
4928 | I386_SAVE_FPU_REGS)) | |
4929 | return -1; | |
4930 | } | |
4931 | /* Fall through */ | |
7ad10968 | 4932 | default: |
955db0c0 | 4933 | if (record_arch_list_add_mem (addr64, 2)) |
7ad10968 HZ |
4934 | return -1; |
4935 | break; | |
4936 | } | |
4937 | break; | |
4938 | } | |
4939 | break; | |
4940 | case 0x0c: | |
0289bdd7 MS |
4941 | /* Insn fldenv. */ |
4942 | if (i386_record_floats (gdbarch, &ir, | |
4943 | I386_SAVE_FPU_ENV_REG_STACK)) | |
4944 | return -1; | |
4945 | break; | |
7ad10968 | 4946 | case 0x0d: |
0289bdd7 MS |
4947 | /* Insn fldcw. */ |
4948 | if (i386_record_floats (gdbarch, &ir, I387_FCTRL_REGNUM (tdep))) | |
4949 | return -1; | |
4950 | break; | |
7ad10968 | 4951 | case 0x2c: |
0289bdd7 MS |
4952 | /* Insn frstor. */ |
4953 | if (i386_record_floats (gdbarch, &ir, | |
4954 | I386_SAVE_FPU_ENV_REG_STACK)) | |
4955 | return -1; | |
7ad10968 HZ |
4956 | break; |
4957 | case 0x0e: | |
4958 | if (ir.dflag) | |
4959 | { | |
955db0c0 | 4960 | if (record_arch_list_add_mem (addr64, 28)) |
7ad10968 HZ |
4961 | return -1; |
4962 | } | |
4963 | else | |
4964 | { | |
955db0c0 | 4965 | if (record_arch_list_add_mem (addr64, 14)) |
7ad10968 HZ |
4966 | return -1; |
4967 | } | |
4968 | break; | |
4969 | case 0x0f: | |
4970 | case 0x2f: | |
955db0c0 | 4971 | if (record_arch_list_add_mem (addr64, 2)) |
7ad10968 | 4972 | return -1; |
0289bdd7 MS |
4973 | /* Insn fstp, fbstp. */ |
4974 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_REGS)) | |
4975 | return -1; | |
7ad10968 HZ |
4976 | break; |
4977 | case 0x1f: | |
4978 | case 0x3e: | |
955db0c0 | 4979 | if (record_arch_list_add_mem (addr64, 10)) |
7ad10968 HZ |
4980 | return -1; |
4981 | break; | |
4982 | case 0x2e: | |
4983 | if (ir.dflag) | |
4984 | { | |
955db0c0 | 4985 | if (record_arch_list_add_mem (addr64, 28)) |
7ad10968 | 4986 | return -1; |
955db0c0 | 4987 | addr64 += 28; |
7ad10968 HZ |
4988 | } |
4989 | else | |
4990 | { | |
955db0c0 | 4991 | if (record_arch_list_add_mem (addr64, 14)) |
7ad10968 | 4992 | return -1; |
955db0c0 | 4993 | addr64 += 14; |
7ad10968 | 4994 | } |
955db0c0 | 4995 | if (record_arch_list_add_mem (addr64, 80)) |
7ad10968 | 4996 | return -1; |
0289bdd7 MS |
4997 | /* Insn fsave. */ |
4998 | if (i386_record_floats (gdbarch, &ir, | |
4999 | I386_SAVE_FPU_ENV_REG_STACK)) | |
5000 | return -1; | |
7ad10968 HZ |
5001 | break; |
5002 | case 0x3f: | |
955db0c0 | 5003 | if (record_arch_list_add_mem (addr64, 8)) |
7ad10968 | 5004 | return -1; |
0289bdd7 MS |
5005 | /* Insn fistp. */ |
5006 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_REGS)) | |
5007 | return -1; | |
7ad10968 HZ |
5008 | break; |
5009 | default: | |
5010 | ir.addr -= 2; | |
5011 | opcode = opcode << 8 | ir.modrm; | |
5012 | goto no_support; | |
5013 | break; | |
5014 | } | |
5015 | } | |
0289bdd7 MS |
5016 | /* Opcode is an extension of modR/M byte. */ |
5017 | else | |
5018 | { | |
5019 | switch (opcode) | |
5020 | { | |
5021 | case 0xd8: | |
5022 | if (i386_record_floats (gdbarch, &ir, I387_ST0_REGNUM (tdep))) | |
5023 | return -1; | |
5024 | break; | |
5025 | case 0xd9: | |
5026 | if (0x0c == (ir.modrm >> 4)) | |
5027 | { | |
5028 | if ((ir.modrm & 0x0f) <= 7) | |
5029 | { | |
5030 | if (i386_record_floats (gdbarch, &ir, | |
5031 | I386_SAVE_FPU_REGS)) | |
5032 | return -1; | |
5033 | } | |
5034 | else | |
5035 | { | |
5036 | if (i386_record_floats (gdbarch, &ir, | |
5037 | I387_ST0_REGNUM (tdep))) | |
5038 | return -1; | |
5039 | /* If only st(0) is changing, then we have already | |
5040 | recorded. */ | |
5041 | if ((ir.modrm & 0x0f) - 0x08) | |
5042 | { | |
5043 | if (i386_record_floats (gdbarch, &ir, | |
5044 | I387_ST0_REGNUM (tdep) + | |
5045 | ((ir.modrm & 0x0f) - 0x08))) | |
5046 | return -1; | |
5047 | } | |
5048 | } | |
5049 | } | |
5050 | else | |
5051 | { | |
5052 | switch (ir.modrm) | |
5053 | { | |
5054 | case 0xe0: | |
5055 | case 0xe1: | |
5056 | case 0xf0: | |
5057 | case 0xf5: | |
5058 | case 0xf8: | |
5059 | case 0xfa: | |
5060 | case 0xfc: | |
5061 | case 0xfe: | |
5062 | case 0xff: | |
5063 | if (i386_record_floats (gdbarch, &ir, | |
5064 | I387_ST0_REGNUM (tdep))) | |
5065 | return -1; | |
5066 | break; | |
5067 | case 0xf1: | |
5068 | case 0xf2: | |
5069 | case 0xf3: | |
5070 | case 0xf4: | |
5071 | case 0xf6: | |
5072 | case 0xf7: | |
5073 | case 0xe8: | |
5074 | case 0xe9: | |
5075 | case 0xea: | |
5076 | case 0xeb: | |
5077 | case 0xec: | |
5078 | case 0xed: | |
5079 | case 0xee: | |
5080 | case 0xf9: | |
5081 | case 0xfb: | |
5082 | if (i386_record_floats (gdbarch, &ir, | |
5083 | I386_SAVE_FPU_REGS)) | |
5084 | return -1; | |
5085 | break; | |
5086 | case 0xfd: | |
5087 | if (i386_record_floats (gdbarch, &ir, | |
5088 | I387_ST0_REGNUM (tdep))) | |
5089 | return -1; | |
5090 | if (i386_record_floats (gdbarch, &ir, | |
5091 | I387_ST0_REGNUM (tdep) + 1)) | |
5092 | return -1; | |
5093 | break; | |
5094 | } | |
5095 | } | |
5096 | break; | |
5097 | case 0xda: | |
5098 | if (0xe9 == ir.modrm) | |
5099 | { | |
5100 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_REGS)) | |
5101 | return -1; | |
5102 | } | |
5103 | else if ((0x0c == ir.modrm >> 4) || (0x0d == ir.modrm >> 4)) | |
5104 | { | |
5105 | if (i386_record_floats (gdbarch, &ir, | |
5106 | I387_ST0_REGNUM (tdep))) | |
5107 | return -1; | |
5108 | if (((ir.modrm & 0x0f) > 0) && ((ir.modrm & 0x0f) <= 7)) | |
5109 | { | |
5110 | if (i386_record_floats (gdbarch, &ir, | |
5111 | I387_ST0_REGNUM (tdep) + | |
5112 | (ir.modrm & 0x0f))) | |
5113 | return -1; | |
5114 | } | |
5115 | else if ((ir.modrm & 0x0f) - 0x08) | |
5116 | { | |
5117 | if (i386_record_floats (gdbarch, &ir, | |
5118 | I387_ST0_REGNUM (tdep) + | |
5119 | ((ir.modrm & 0x0f) - 0x08))) | |
5120 | return -1; | |
5121 | } | |
5122 | } | |
5123 | break; | |
5124 | case 0xdb: | |
5125 | if (0xe3 == ir.modrm) | |
5126 | { | |
5127 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_ENV)) | |
5128 | return -1; | |
5129 | } | |
5130 | else if ((0x0c == ir.modrm >> 4) || (0x0d == ir.modrm >> 4)) | |
5131 | { | |
5132 | if (i386_record_floats (gdbarch, &ir, | |
5133 | I387_ST0_REGNUM (tdep))) | |
5134 | return -1; | |
5135 | if (((ir.modrm & 0x0f) > 0) && ((ir.modrm & 0x0f) <= 7)) | |
5136 | { | |
5137 | if (i386_record_floats (gdbarch, &ir, | |
5138 | I387_ST0_REGNUM (tdep) + | |
5139 | (ir.modrm & 0x0f))) | |
5140 | return -1; | |
5141 | } | |
5142 | else if ((ir.modrm & 0x0f) - 0x08) | |
5143 | { | |
5144 | if (i386_record_floats (gdbarch, &ir, | |
5145 | I387_ST0_REGNUM (tdep) + | |
5146 | ((ir.modrm & 0x0f) - 0x08))) | |
5147 | return -1; | |
5148 | } | |
5149 | } | |
5150 | break; | |
5151 | case 0xdc: | |
5152 | if ((0x0c == ir.modrm >> 4) | |
5153 | || (0x0d == ir.modrm >> 4) | |
5154 | || (0x0f == ir.modrm >> 4)) | |
5155 | { | |
5156 | if ((ir.modrm & 0x0f) <= 7) | |
5157 | { | |
5158 | if (i386_record_floats (gdbarch, &ir, | |
5159 | I387_ST0_REGNUM (tdep) + | |
5160 | (ir.modrm & 0x0f))) | |
5161 | return -1; | |
5162 | } | |
5163 | else | |
5164 | { | |
5165 | if (i386_record_floats (gdbarch, &ir, | |
5166 | I387_ST0_REGNUM (tdep) + | |
5167 | ((ir.modrm & 0x0f) - 0x08))) | |
5168 | return -1; | |
5169 | } | |
5170 | } | |
5171 | break; | |
5172 | case 0xdd: | |
5173 | if (0x0c == ir.modrm >> 4) | |
5174 | { | |
5175 | if (i386_record_floats (gdbarch, &ir, | |
5176 | I387_FTAG_REGNUM (tdep))) | |
5177 | return -1; | |
5178 | } | |
5179 | else if ((0x0d == ir.modrm >> 4) || (0x0e == ir.modrm >> 4)) | |
5180 | { | |
5181 | if ((ir.modrm & 0x0f) <= 7) | |
5182 | { | |
5183 | if (i386_record_floats (gdbarch, &ir, | |
5184 | I387_ST0_REGNUM (tdep) + | |
5185 | (ir.modrm & 0x0f))) | |
5186 | return -1; | |
5187 | } | |
5188 | else | |
5189 | { | |
5190 | if (i386_record_floats (gdbarch, &ir, | |
5191 | I386_SAVE_FPU_REGS)) | |
5192 | return -1; | |
5193 | } | |
5194 | } | |
5195 | break; | |
5196 | case 0xde: | |
5197 | if ((0x0c == ir.modrm >> 4) | |
5198 | || (0x0e == ir.modrm >> 4) | |
5199 | || (0x0f == ir.modrm >> 4) | |
5200 | || (0xd9 == ir.modrm)) | |
5201 | { | |
5202 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_REGS)) | |
5203 | return -1; | |
5204 | } | |
5205 | break; | |
5206 | case 0xdf: | |
5207 | if (0xe0 == ir.modrm) | |
5208 | { | |
5209 | if (record_arch_list_add_reg (ir.regcache, I386_EAX_REGNUM)) | |
5210 | return -1; | |
5211 | } | |
5212 | else if ((0x0f == ir.modrm >> 4) || (0x0e == ir.modrm >> 4)) | |
5213 | { | |
5214 | if (i386_record_floats (gdbarch, &ir, I386_SAVE_FPU_REGS)) | |
5215 | return -1; | |
5216 | } | |
5217 | break; | |
5218 | } | |
5219 | } | |
7ad10968 | 5220 | break; |
7ad10968 | 5221 | /* string ops */ |
a38bba38 | 5222 | case 0xa4: /* movsS */ |
7ad10968 | 5223 | case 0xa5: |
a38bba38 | 5224 | case 0xaa: /* stosS */ |
7ad10968 | 5225 | case 0xab: |
a38bba38 | 5226 | case 0x6c: /* insS */ |
7ad10968 | 5227 | case 0x6d: |
cf648174 | 5228 | regcache_raw_read_unsigned (ir.regcache, |
77d7dc92 | 5229 | ir.regmap[X86_RECORD_RECX_REGNUM], |
648d0c8b MS |
5230 | &addr); |
5231 | if (addr) | |
cf648174 | 5232 | { |
77d7dc92 HZ |
5233 | ULONGEST es, ds; |
5234 | ||
5235 | if ((opcode & 1) == 0) | |
5236 | ir.ot = OT_BYTE; | |
5237 | else | |
5238 | ir.ot = ir.dflag + OT_WORD; | |
cf648174 HZ |
5239 | regcache_raw_read_unsigned (ir.regcache, |
5240 | ir.regmap[X86_RECORD_REDI_REGNUM], | |
648d0c8b | 5241 | &addr); |
77d7dc92 | 5242 | |
d7877f7e HZ |
5243 | regcache_raw_read_unsigned (ir.regcache, |
5244 | ir.regmap[X86_RECORD_ES_REGNUM], | |
5245 | &es); | |
5246 | regcache_raw_read_unsigned (ir.regcache, | |
5247 | ir.regmap[X86_RECORD_DS_REGNUM], | |
5248 | &ds); | |
5249 | if (ir.aflag && (es != ds)) | |
77d7dc92 HZ |
5250 | { |
5251 | /* addr += ((uint32_t) read_register (I386_ES_REGNUM)) << 4; */ | |
bb08c432 HZ |
5252 | if (record_memory_query) |
5253 | { | |
5254 | int q; | |
5255 | ||
5256 | target_terminal_ours (); | |
5257 | q = yquery (_("\ | |
5258 | Process record ignores the memory change of instruction at address %s\n\ | |
5259 | because it can't get the value of the segment register.\n\ | |
5260 | Do you want to stop the program?"), | |
5261 | paddress (gdbarch, ir.orig_addr)); | |
5262 | target_terminal_inferior (); | |
5263 | if (q) | |
5264 | return -1; | |
5265 | } | |
df61f520 HZ |
5266 | } |
5267 | else | |
5268 | { | |
648d0c8b | 5269 | if (record_arch_list_add_mem (addr, 1 << ir.ot)) |
df61f520 | 5270 | return -1; |
77d7dc92 HZ |
5271 | } |
5272 | ||
5273 | if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) | |
5274 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); | |
77d7dc92 HZ |
5275 | if (opcode == 0xa4 || opcode == 0xa5) |
5276 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESI_REGNUM); | |
5277 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDI_REGNUM); | |
5278 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
5279 | } | |
cf648174 | 5280 | break; |
7ad10968 | 5281 | |
a38bba38 | 5282 | case 0xa6: /* cmpsS */ |
cf648174 HZ |
5283 | case 0xa7: |
5284 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDI_REGNUM); | |
5285 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESI_REGNUM); | |
5286 | if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) | |
5287 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); | |
5288 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5289 | break; |
5290 | ||
a38bba38 | 5291 | case 0xac: /* lodsS */ |
7ad10968 | 5292 | case 0xad: |
cf648174 HZ |
5293 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
5294 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESI_REGNUM); | |
7ad10968 | 5295 | if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) |
cf648174 HZ |
5296 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); |
5297 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5298 | break; |
5299 | ||
a38bba38 | 5300 | case 0xae: /* scasS */ |
7ad10968 | 5301 | case 0xaf: |
cf648174 | 5302 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDI_REGNUM); |
7ad10968 | 5303 | if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) |
cf648174 HZ |
5304 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); |
5305 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5306 | break; |
5307 | ||
a38bba38 | 5308 | case 0x6e: /* outsS */ |
cf648174 HZ |
5309 | case 0x6f: |
5310 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESI_REGNUM); | |
7ad10968 | 5311 | if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) |
cf648174 HZ |
5312 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); |
5313 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5314 | break; |
5315 | ||
a38bba38 | 5316 | case 0xe4: /* port I/O */ |
7ad10968 HZ |
5317 | case 0xe5: |
5318 | case 0xec: | |
5319 | case 0xed: | |
cf648174 HZ |
5320 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
5321 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); | |
7ad10968 HZ |
5322 | break; |
5323 | ||
5324 | case 0xe6: | |
5325 | case 0xe7: | |
5326 | case 0xee: | |
5327 | case 0xef: | |
5328 | break; | |
5329 | ||
5330 | /* control */ | |
a38bba38 MS |
5331 | case 0xc2: /* ret im */ |
5332 | case 0xc3: /* ret */ | |
cf648174 HZ |
5333 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); |
5334 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
5335 | break; | |
5336 | ||
a38bba38 MS |
5337 | case 0xca: /* lret im */ |
5338 | case 0xcb: /* lret */ | |
5339 | case 0xcf: /* iret */ | |
cf648174 HZ |
5340 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_CS_REGNUM); |
5341 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); | |
5342 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5343 | break; |
5344 | ||
a38bba38 | 5345 | case 0xe8: /* call im */ |
cf648174 HZ |
5346 | if (ir.regmap[X86_RECORD_R8_REGNUM] && ir.dflag) |
5347 | ir.dflag = 2; | |
5348 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
5349 | return -1; | |
7ad10968 HZ |
5350 | break; |
5351 | ||
a38bba38 | 5352 | case 0x9a: /* lcall im */ |
cf648174 HZ |
5353 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5354 | { | |
5355 | ir.addr -= 1; | |
5356 | goto no_support; | |
5357 | } | |
5358 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_CS_REGNUM); | |
5359 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
5360 | return -1; | |
7ad10968 HZ |
5361 | break; |
5362 | ||
a38bba38 MS |
5363 | case 0xe9: /* jmp im */ |
5364 | case 0xea: /* ljmp im */ | |
5365 | case 0xeb: /* jmp Jb */ | |
5366 | case 0x70: /* jcc Jb */ | |
7ad10968 HZ |
5367 | case 0x71: |
5368 | case 0x72: | |
5369 | case 0x73: | |
5370 | case 0x74: | |
5371 | case 0x75: | |
5372 | case 0x76: | |
5373 | case 0x77: | |
5374 | case 0x78: | |
5375 | case 0x79: | |
5376 | case 0x7a: | |
5377 | case 0x7b: | |
5378 | case 0x7c: | |
5379 | case 0x7d: | |
5380 | case 0x7e: | |
5381 | case 0x7f: | |
a38bba38 | 5382 | case 0x0f80: /* jcc Jv */ |
7ad10968 HZ |
5383 | case 0x0f81: |
5384 | case 0x0f82: | |
5385 | case 0x0f83: | |
5386 | case 0x0f84: | |
5387 | case 0x0f85: | |
5388 | case 0x0f86: | |
5389 | case 0x0f87: | |
5390 | case 0x0f88: | |
5391 | case 0x0f89: | |
5392 | case 0x0f8a: | |
5393 | case 0x0f8b: | |
5394 | case 0x0f8c: | |
5395 | case 0x0f8d: | |
5396 | case 0x0f8e: | |
5397 | case 0x0f8f: | |
5398 | break; | |
5399 | ||
a38bba38 | 5400 | case 0x0f90: /* setcc Gv */ |
7ad10968 HZ |
5401 | case 0x0f91: |
5402 | case 0x0f92: | |
5403 | case 0x0f93: | |
5404 | case 0x0f94: | |
5405 | case 0x0f95: | |
5406 | case 0x0f96: | |
5407 | case 0x0f97: | |
5408 | case 0x0f98: | |
5409 | case 0x0f99: | |
5410 | case 0x0f9a: | |
5411 | case 0x0f9b: | |
5412 | case 0x0f9c: | |
5413 | case 0x0f9d: | |
5414 | case 0x0f9e: | |
5415 | case 0x0f9f: | |
cf648174 | 5416 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
5417 | ir.ot = OT_BYTE; |
5418 | if (i386_record_modrm (&ir)) | |
5419 | return -1; | |
5420 | if (ir.mod == 3) | |
cf648174 HZ |
5421 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rex_b ? (ir.rm | ir.rex_b) |
5422 | : (ir.rm & 0x3)); | |
7ad10968 HZ |
5423 | else |
5424 | { | |
5425 | if (i386_record_lea_modrm (&ir)) | |
5426 | return -1; | |
5427 | } | |
5428 | break; | |
5429 | ||
a38bba38 | 5430 | case 0x0f40: /* cmov Gv, Ev */ |
7ad10968 HZ |
5431 | case 0x0f41: |
5432 | case 0x0f42: | |
5433 | case 0x0f43: | |
5434 | case 0x0f44: | |
5435 | case 0x0f45: | |
5436 | case 0x0f46: | |
5437 | case 0x0f47: | |
5438 | case 0x0f48: | |
5439 | case 0x0f49: | |
5440 | case 0x0f4a: | |
5441 | case 0x0f4b: | |
5442 | case 0x0f4c: | |
5443 | case 0x0f4d: | |
5444 | case 0x0f4e: | |
5445 | case 0x0f4f: | |
5446 | if (i386_record_modrm (&ir)) | |
5447 | return -1; | |
cf648174 | 5448 | ir.reg |= rex_r; |
7ad10968 HZ |
5449 | if (ir.dflag == OT_BYTE) |
5450 | ir.reg &= 0x3; | |
cf648174 | 5451 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); |
7ad10968 HZ |
5452 | break; |
5453 | ||
5454 | /* flags */ | |
a38bba38 | 5455 | case 0x9c: /* pushf */ |
cf648174 HZ |
5456 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
5457 | if (ir.regmap[X86_RECORD_R8_REGNUM] && ir.dflag) | |
5458 | ir.dflag = 2; | |
5459 | if (i386_record_push (&ir, 1 << (ir.dflag + 1))) | |
5460 | return -1; | |
7ad10968 HZ |
5461 | break; |
5462 | ||
a38bba38 | 5463 | case 0x9d: /* popf */ |
cf648174 HZ |
5464 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); |
5465 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5466 | break; |
5467 | ||
a38bba38 | 5468 | case 0x9e: /* sahf */ |
cf648174 HZ |
5469 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5470 | { | |
5471 | ir.addr -= 1; | |
5472 | goto no_support; | |
5473 | } | |
d3f323f3 | 5474 | /* FALLTHROUGH */ |
a38bba38 MS |
5475 | case 0xf5: /* cmc */ |
5476 | case 0xf8: /* clc */ | |
5477 | case 0xf9: /* stc */ | |
5478 | case 0xfc: /* cld */ | |
5479 | case 0xfd: /* std */ | |
cf648174 | 5480 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
5481 | break; |
5482 | ||
a38bba38 | 5483 | case 0x9f: /* lahf */ |
cf648174 HZ |
5484 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5485 | { | |
5486 | ir.addr -= 1; | |
5487 | goto no_support; | |
5488 | } | |
5489 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
5490 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); | |
7ad10968 HZ |
5491 | break; |
5492 | ||
5493 | /* bit operations */ | |
a38bba38 | 5494 | case 0x0fba: /* bt/bts/btr/btc Gv, im */ |
7ad10968 HZ |
5495 | ir.ot = ir.dflag + OT_WORD; |
5496 | if (i386_record_modrm (&ir)) | |
5497 | return -1; | |
5498 | if (ir.reg < 4) | |
5499 | { | |
cf648174 | 5500 | ir.addr -= 2; |
7ad10968 HZ |
5501 | opcode = opcode << 8 | ir.modrm; |
5502 | goto no_support; | |
5503 | } | |
cf648174 | 5504 | if (ir.reg != 4) |
7ad10968 | 5505 | { |
cf648174 HZ |
5506 | if (ir.mod == 3) |
5507 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); | |
7ad10968 HZ |
5508 | else |
5509 | { | |
cf648174 | 5510 | if (i386_record_lea_modrm (&ir)) |
7ad10968 HZ |
5511 | return -1; |
5512 | } | |
5513 | } | |
cf648174 | 5514 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
5515 | break; |
5516 | ||
a38bba38 | 5517 | case 0x0fa3: /* bt Gv, Ev */ |
cf648174 HZ |
5518 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
5519 | break; | |
5520 | ||
a38bba38 MS |
5521 | case 0x0fab: /* bts */ |
5522 | case 0x0fb3: /* btr */ | |
5523 | case 0x0fbb: /* btc */ | |
cf648174 HZ |
5524 | ir.ot = ir.dflag + OT_WORD; |
5525 | if (i386_record_modrm (&ir)) | |
5526 | return -1; | |
5527 | if (ir.mod == 3) | |
5528 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); | |
5529 | else | |
5530 | { | |
955db0c0 MS |
5531 | uint64_t addr64; |
5532 | if (i386_record_lea_modrm_addr (&ir, &addr64)) | |
cf648174 HZ |
5533 | return -1; |
5534 | regcache_raw_read_unsigned (ir.regcache, | |
5535 | ir.regmap[ir.reg | rex_r], | |
648d0c8b | 5536 | &addr); |
cf648174 HZ |
5537 | switch (ir.dflag) |
5538 | { | |
5539 | case 0: | |
648d0c8b | 5540 | addr64 += ((int16_t) addr >> 4) << 4; |
cf648174 HZ |
5541 | break; |
5542 | case 1: | |
648d0c8b | 5543 | addr64 += ((int32_t) addr >> 5) << 5; |
cf648174 HZ |
5544 | break; |
5545 | case 2: | |
648d0c8b | 5546 | addr64 += ((int64_t) addr >> 6) << 6; |
cf648174 HZ |
5547 | break; |
5548 | } | |
955db0c0 | 5549 | if (record_arch_list_add_mem (addr64, 1 << ir.ot)) |
cf648174 HZ |
5550 | return -1; |
5551 | if (i386_record_lea_modrm (&ir)) | |
5552 | return -1; | |
5553 | } | |
5554 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5555 | break; |
5556 | ||
a38bba38 MS |
5557 | case 0x0fbc: /* bsf */ |
5558 | case 0x0fbd: /* bsr */ | |
cf648174 HZ |
5559 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg | rex_r); |
5560 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5561 | break; |
5562 | ||
5563 | /* bcd */ | |
a38bba38 MS |
5564 | case 0x27: /* daa */ |
5565 | case 0x2f: /* das */ | |
5566 | case 0x37: /* aaa */ | |
5567 | case 0x3f: /* aas */ | |
5568 | case 0xd4: /* aam */ | |
5569 | case 0xd5: /* aad */ | |
cf648174 HZ |
5570 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5571 | { | |
5572 | ir.addr -= 1; | |
5573 | goto no_support; | |
5574 | } | |
5575 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); | |
5576 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5577 | break; |
5578 | ||
5579 | /* misc */ | |
a38bba38 | 5580 | case 0x90: /* nop */ |
7ad10968 HZ |
5581 | if (prefixes & PREFIX_LOCK) |
5582 | { | |
5583 | ir.addr -= 1; | |
5584 | goto no_support; | |
5585 | } | |
5586 | break; | |
5587 | ||
a38bba38 | 5588 | case 0x9b: /* fwait */ |
425b824a | 5589 | if (target_read_memory (ir.addr, &opcode8, 1)) |
0289bdd7 MS |
5590 | { |
5591 | if (record_debug) | |
5592 | printf_unfiltered (_("Process record: error reading memory at " | |
5593 | "addr 0x%s len = 1.\n"), | |
5594 | paddress (gdbarch, ir.addr)); | |
5595 | return -1; | |
5596 | } | |
425b824a | 5597 | opcode = (uint32_t) opcode8; |
0289bdd7 MS |
5598 | ir.addr++; |
5599 | goto reswitch; | |
7ad10968 HZ |
5600 | break; |
5601 | ||
7ad10968 | 5602 | /* XXX */ |
a38bba38 | 5603 | case 0xcc: /* int3 */ |
a3c4230a | 5604 | printf_unfiltered (_("Process record does not support instruction " |
7ad10968 HZ |
5605 | "int3.\n")); |
5606 | ir.addr -= 1; | |
5607 | goto no_support; | |
5608 | break; | |
5609 | ||
7ad10968 | 5610 | /* XXX */ |
a38bba38 | 5611 | case 0xcd: /* int */ |
7ad10968 HZ |
5612 | { |
5613 | int ret; | |
425b824a MS |
5614 | uint8_t interrupt; |
5615 | if (target_read_memory (ir.addr, &interrupt, 1)) | |
7ad10968 HZ |
5616 | { |
5617 | if (record_debug) | |
5618 | printf_unfiltered (_("Process record: error reading memory " | |
5af949e3 UW |
5619 | "at addr %s len = 1.\n"), |
5620 | paddress (gdbarch, ir.addr)); | |
7ad10968 HZ |
5621 | return -1; |
5622 | } | |
5623 | ir.addr++; | |
425b824a | 5624 | if (interrupt != 0x80 |
a3c4230a | 5625 | || tdep->i386_intx80_record == NULL) |
7ad10968 | 5626 | { |
a3c4230a | 5627 | printf_unfiltered (_("Process record does not support " |
7ad10968 | 5628 | "instruction int 0x%02x.\n"), |
425b824a | 5629 | interrupt); |
7ad10968 HZ |
5630 | ir.addr -= 2; |
5631 | goto no_support; | |
5632 | } | |
a3c4230a | 5633 | ret = tdep->i386_intx80_record (ir.regcache); |
7ad10968 HZ |
5634 | if (ret) |
5635 | return ret; | |
5636 | } | |
5637 | break; | |
5638 | ||
7ad10968 | 5639 | /* XXX */ |
a38bba38 | 5640 | case 0xce: /* into */ |
a3c4230a | 5641 | printf_unfiltered (_("Process record does not support " |
7ad10968 HZ |
5642 | "instruction into.\n")); |
5643 | ir.addr -= 1; | |
5644 | goto no_support; | |
5645 | break; | |
5646 | ||
a38bba38 MS |
5647 | case 0xfa: /* cli */ |
5648 | case 0xfb: /* sti */ | |
7ad10968 HZ |
5649 | break; |
5650 | ||
a38bba38 | 5651 | case 0x62: /* bound */ |
a3c4230a | 5652 | printf_unfiltered (_("Process record does not support " |
7ad10968 HZ |
5653 | "instruction bound.\n")); |
5654 | ir.addr -= 1; | |
5655 | goto no_support; | |
5656 | break; | |
5657 | ||
a38bba38 | 5658 | case 0x0fc8: /* bswap reg */ |
7ad10968 HZ |
5659 | case 0x0fc9: |
5660 | case 0x0fca: | |
5661 | case 0x0fcb: | |
5662 | case 0x0fcc: | |
5663 | case 0x0fcd: | |
5664 | case 0x0fce: | |
5665 | case 0x0fcf: | |
cf648174 | 5666 | I386_RECORD_ARCH_LIST_ADD_REG ((opcode & 7) | ir.rex_b); |
7ad10968 HZ |
5667 | break; |
5668 | ||
a38bba38 | 5669 | case 0xd6: /* salc */ |
cf648174 HZ |
5670 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5671 | { | |
5672 | ir.addr -= 1; | |
5673 | goto no_support; | |
5674 | } | |
5675 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); | |
5676 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5677 | break; |
5678 | ||
a38bba38 MS |
5679 | case 0xe0: /* loopnz */ |
5680 | case 0xe1: /* loopz */ | |
5681 | case 0xe2: /* loop */ | |
5682 | case 0xe3: /* jecxz */ | |
cf648174 HZ |
5683 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); |
5684 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5685 | break; |
5686 | ||
a38bba38 | 5687 | case 0x0f30: /* wrmsr */ |
a3c4230a | 5688 | printf_unfiltered (_("Process record does not support " |
7ad10968 HZ |
5689 | "instruction wrmsr.\n")); |
5690 | ir.addr -= 2; | |
5691 | goto no_support; | |
5692 | break; | |
5693 | ||
a38bba38 | 5694 | case 0x0f32: /* rdmsr */ |
a3c4230a | 5695 | printf_unfiltered (_("Process record does not support " |
7ad10968 HZ |
5696 | "instruction rdmsr.\n")); |
5697 | ir.addr -= 2; | |
5698 | goto no_support; | |
5699 | break; | |
5700 | ||
a38bba38 | 5701 | case 0x0f31: /* rdtsc */ |
f8c4f480 HZ |
5702 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
5703 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM); | |
7ad10968 HZ |
5704 | break; |
5705 | ||
a38bba38 | 5706 | case 0x0f34: /* sysenter */ |
7ad10968 HZ |
5707 | { |
5708 | int ret; | |
cf648174 HZ |
5709 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5710 | { | |
5711 | ir.addr -= 2; | |
5712 | goto no_support; | |
5713 | } | |
a3c4230a | 5714 | if (tdep->i386_sysenter_record == NULL) |
7ad10968 | 5715 | { |
a3c4230a | 5716 | printf_unfiltered (_("Process record does not support " |
7ad10968 HZ |
5717 | "instruction sysenter.\n")); |
5718 | ir.addr -= 2; | |
5719 | goto no_support; | |
5720 | } | |
a3c4230a | 5721 | ret = tdep->i386_sysenter_record (ir.regcache); |
7ad10968 HZ |
5722 | if (ret) |
5723 | return ret; | |
5724 | } | |
5725 | break; | |
5726 | ||
a38bba38 | 5727 | case 0x0f35: /* sysexit */ |
a3c4230a | 5728 | printf_unfiltered (_("Process record does not support " |
7ad10968 HZ |
5729 | "instruction sysexit.\n")); |
5730 | ir.addr -= 2; | |
5731 | goto no_support; | |
5732 | break; | |
5733 | ||
a38bba38 | 5734 | case 0x0f05: /* syscall */ |
cf648174 HZ |
5735 | { |
5736 | int ret; | |
a3c4230a | 5737 | if (tdep->i386_syscall_record == NULL) |
cf648174 | 5738 | { |
a3c4230a | 5739 | printf_unfiltered (_("Process record does not support " |
cf648174 HZ |
5740 | "instruction syscall.\n")); |
5741 | ir.addr -= 2; | |
5742 | goto no_support; | |
5743 | } | |
a3c4230a | 5744 | ret = tdep->i386_syscall_record (ir.regcache); |
cf648174 HZ |
5745 | if (ret) |
5746 | return ret; | |
5747 | } | |
5748 | break; | |
5749 | ||
a38bba38 | 5750 | case 0x0f07: /* sysret */ |
a3c4230a | 5751 | printf_unfiltered (_("Process record does not support " |
cf648174 HZ |
5752 | "instruction sysret.\n")); |
5753 | ir.addr -= 2; | |
5754 | goto no_support; | |
5755 | break; | |
5756 | ||
a38bba38 | 5757 | case 0x0fa2: /* cpuid */ |
cf648174 HZ |
5758 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); |
5759 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); | |
5760 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM); | |
5761 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REBX_REGNUM); | |
7ad10968 HZ |
5762 | break; |
5763 | ||
a38bba38 | 5764 | case 0xf4: /* hlt */ |
a3c4230a | 5765 | printf_unfiltered (_("Process record does not support " |
7ad10968 HZ |
5766 | "instruction hlt.\n")); |
5767 | ir.addr -= 1; | |
5768 | goto no_support; | |
5769 | break; | |
5770 | ||
5771 | case 0x0f00: | |
5772 | if (i386_record_modrm (&ir)) | |
5773 | return -1; | |
5774 | switch (ir.reg) | |
5775 | { | |
a38bba38 MS |
5776 | case 0: /* sldt */ |
5777 | case 1: /* str */ | |
7ad10968 | 5778 | if (ir.mod == 3) |
cf648174 | 5779 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); |
7ad10968 HZ |
5780 | else |
5781 | { | |
5782 | ir.ot = OT_WORD; | |
5783 | if (i386_record_lea_modrm (&ir)) | |
5784 | return -1; | |
5785 | } | |
5786 | break; | |
a38bba38 MS |
5787 | case 2: /* lldt */ |
5788 | case 3: /* ltr */ | |
7ad10968 | 5789 | break; |
a38bba38 MS |
5790 | case 4: /* verr */ |
5791 | case 5: /* verw */ | |
cf648174 | 5792 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
5793 | break; |
5794 | default: | |
5795 | ir.addr -= 3; | |
5796 | opcode = opcode << 8 | ir.modrm; | |
5797 | goto no_support; | |
5798 | break; | |
5799 | } | |
5800 | break; | |
5801 | ||
5802 | case 0x0f01: | |
5803 | if (i386_record_modrm (&ir)) | |
5804 | return -1; | |
5805 | switch (ir.reg) | |
5806 | { | |
a38bba38 | 5807 | case 0: /* sgdt */ |
7ad10968 | 5808 | { |
955db0c0 | 5809 | uint64_t addr64; |
7ad10968 HZ |
5810 | |
5811 | if (ir.mod == 3) | |
5812 | { | |
5813 | ir.addr -= 3; | |
5814 | opcode = opcode << 8 | ir.modrm; | |
5815 | goto no_support; | |
5816 | } | |
d7877f7e | 5817 | if (ir.override >= 0) |
7ad10968 | 5818 | { |
bb08c432 HZ |
5819 | if (record_memory_query) |
5820 | { | |
5821 | int q; | |
5822 | ||
5823 | target_terminal_ours (); | |
5824 | q = yquery (_("\ | |
5825 | Process record ignores the memory change of instruction at address %s\n\ | |
5826 | because it can't get the value of the segment register.\n\ | |
5827 | Do you want to stop the program?"), | |
5828 | paddress (gdbarch, ir.orig_addr)); | |
5829 | target_terminal_inferior (); | |
5830 | if (q) | |
5831 | return -1; | |
5832 | } | |
7ad10968 HZ |
5833 | } |
5834 | else | |
5835 | { | |
955db0c0 | 5836 | if (i386_record_lea_modrm_addr (&ir, &addr64)) |
7ad10968 | 5837 | return -1; |
955db0c0 | 5838 | if (record_arch_list_add_mem (addr64, 2)) |
7ad10968 | 5839 | return -1; |
955db0c0 | 5840 | addr64 += 2; |
cf648174 HZ |
5841 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5842 | { | |
955db0c0 | 5843 | if (record_arch_list_add_mem (addr64, 8)) |
cf648174 HZ |
5844 | return -1; |
5845 | } | |
5846 | else | |
5847 | { | |
955db0c0 | 5848 | if (record_arch_list_add_mem (addr64, 4)) |
cf648174 HZ |
5849 | return -1; |
5850 | } | |
7ad10968 HZ |
5851 | } |
5852 | } | |
5853 | break; | |
5854 | case 1: | |
5855 | if (ir.mod == 3) | |
5856 | { | |
5857 | switch (ir.rm) | |
5858 | { | |
a38bba38 | 5859 | case 0: /* monitor */ |
7ad10968 | 5860 | break; |
a38bba38 | 5861 | case 1: /* mwait */ |
cf648174 | 5862 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
5863 | break; |
5864 | default: | |
5865 | ir.addr -= 3; | |
5866 | opcode = opcode << 8 | ir.modrm; | |
5867 | goto no_support; | |
5868 | break; | |
5869 | } | |
5870 | } | |
5871 | else | |
5872 | { | |
5873 | /* sidt */ | |
d7877f7e | 5874 | if (ir.override >= 0) |
7ad10968 | 5875 | { |
bb08c432 HZ |
5876 | if (record_memory_query) |
5877 | { | |
5878 | int q; | |
5879 | ||
5880 | target_terminal_ours (); | |
5881 | q = yquery (_("\ | |
5882 | Process record ignores the memory change of instruction at address %s\n\ | |
5883 | because it can't get the value of the segment register.\n\ | |
5884 | Do you want to stop the program?"), | |
5885 | paddress (gdbarch, ir.orig_addr)); | |
5886 | target_terminal_inferior (); | |
5887 | if (q) | |
5888 | return -1; | |
5889 | } | |
7ad10968 HZ |
5890 | } |
5891 | else | |
5892 | { | |
955db0c0 | 5893 | uint64_t addr64; |
7ad10968 | 5894 | |
955db0c0 | 5895 | if (i386_record_lea_modrm_addr (&ir, &addr64)) |
7ad10968 | 5896 | return -1; |
955db0c0 | 5897 | if (record_arch_list_add_mem (addr64, 2)) |
7ad10968 | 5898 | return -1; |
955db0c0 | 5899 | addr64 += 2; |
cf648174 HZ |
5900 | if (ir.regmap[X86_RECORD_R8_REGNUM]) |
5901 | { | |
955db0c0 | 5902 | if (record_arch_list_add_mem (addr64, 8)) |
cf648174 HZ |
5903 | return -1; |
5904 | } | |
5905 | else | |
5906 | { | |
955db0c0 | 5907 | if (record_arch_list_add_mem (addr64, 4)) |
cf648174 HZ |
5908 | return -1; |
5909 | } | |
7ad10968 HZ |
5910 | } |
5911 | } | |
5912 | break; | |
a38bba38 | 5913 | case 2: /* lgdt */ |
3800e645 MS |
5914 | if (ir.mod == 3) |
5915 | { | |
5916 | /* xgetbv */ | |
5917 | if (ir.rm == 0) | |
5918 | { | |
5919 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); | |
5920 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM); | |
5921 | break; | |
5922 | } | |
5923 | /* xsetbv */ | |
5924 | else if (ir.rm == 1) | |
5925 | break; | |
5926 | } | |
a38bba38 | 5927 | case 3: /* lidt */ |
7ad10968 HZ |
5928 | if (ir.mod == 3) |
5929 | { | |
5930 | ir.addr -= 3; | |
5931 | opcode = opcode << 8 | ir.modrm; | |
5932 | goto no_support; | |
5933 | } | |
5934 | break; | |
a38bba38 | 5935 | case 4: /* smsw */ |
7ad10968 HZ |
5936 | if (ir.mod == 3) |
5937 | { | |
cf648174 | 5938 | if (record_arch_list_add_reg (ir.regcache, ir.rm | ir.rex_b)) |
7ad10968 HZ |
5939 | return -1; |
5940 | } | |
5941 | else | |
5942 | { | |
5943 | ir.ot = OT_WORD; | |
5944 | if (i386_record_lea_modrm (&ir)) | |
5945 | return -1; | |
5946 | } | |
cf648174 | 5947 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 5948 | break; |
a38bba38 | 5949 | case 6: /* lmsw */ |
cf648174 HZ |
5950 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
5951 | break; | |
a38bba38 | 5952 | case 7: /* invlpg */ |
cf648174 HZ |
5953 | if (ir.mod == 3) |
5954 | { | |
5955 | if (ir.rm == 0 && ir.regmap[X86_RECORD_R8_REGNUM]) | |
5956 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_GS_REGNUM); | |
5957 | else | |
5958 | { | |
5959 | ir.addr -= 3; | |
5960 | opcode = opcode << 8 | ir.modrm; | |
5961 | goto no_support; | |
5962 | } | |
5963 | } | |
5964 | else | |
5965 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
5966 | break; | |
5967 | default: | |
5968 | ir.addr -= 3; | |
5969 | opcode = opcode << 8 | ir.modrm; | |
5970 | goto no_support; | |
7ad10968 HZ |
5971 | break; |
5972 | } | |
5973 | break; | |
5974 | ||
a38bba38 MS |
5975 | case 0x0f08: /* invd */ |
5976 | case 0x0f09: /* wbinvd */ | |
7ad10968 HZ |
5977 | break; |
5978 | ||
a38bba38 | 5979 | case 0x63: /* arpl */ |
7ad10968 HZ |
5980 | if (i386_record_modrm (&ir)) |
5981 | return -1; | |
cf648174 HZ |
5982 | if (ir.mod == 3 || ir.regmap[X86_RECORD_R8_REGNUM]) |
5983 | { | |
5984 | I386_RECORD_ARCH_LIST_ADD_REG (ir.regmap[X86_RECORD_R8_REGNUM] | |
5985 | ? (ir.reg | rex_r) : ir.rm); | |
5986 | } | |
7ad10968 | 5987 | else |
cf648174 HZ |
5988 | { |
5989 | ir.ot = ir.dflag ? OT_LONG : OT_WORD; | |
5990 | if (i386_record_lea_modrm (&ir)) | |
5991 | return -1; | |
5992 | } | |
5993 | if (!ir.regmap[X86_RECORD_R8_REGNUM]) | |
5994 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
5995 | break; |
5996 | ||
a38bba38 MS |
5997 | case 0x0f02: /* lar */ |
5998 | case 0x0f03: /* lsl */ | |
7ad10968 HZ |
5999 | if (i386_record_modrm (&ir)) |
6000 | return -1; | |
cf648174 HZ |
6001 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg | rex_r); |
6002 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
7ad10968 HZ |
6003 | break; |
6004 | ||
6005 | case 0x0f18: | |
cf648174 HZ |
6006 | if (i386_record_modrm (&ir)) |
6007 | return -1; | |
6008 | if (ir.mod == 3 && ir.reg == 3) | |
6009 | { | |
6010 | ir.addr -= 3; | |
6011 | opcode = opcode << 8 | ir.modrm; | |
6012 | goto no_support; | |
6013 | } | |
7ad10968 HZ |
6014 | break; |
6015 | ||
7ad10968 HZ |
6016 | case 0x0f19: |
6017 | case 0x0f1a: | |
6018 | case 0x0f1b: | |
6019 | case 0x0f1c: | |
6020 | case 0x0f1d: | |
6021 | case 0x0f1e: | |
6022 | case 0x0f1f: | |
a38bba38 | 6023 | /* nop (multi byte) */ |
7ad10968 HZ |
6024 | break; |
6025 | ||
a38bba38 MS |
6026 | case 0x0f20: /* mov reg, crN */ |
6027 | case 0x0f22: /* mov crN, reg */ | |
7ad10968 HZ |
6028 | if (i386_record_modrm (&ir)) |
6029 | return -1; | |
6030 | if ((ir.modrm & 0xc0) != 0xc0) | |
6031 | { | |
cf648174 | 6032 | ir.addr -= 3; |
7ad10968 HZ |
6033 | opcode = opcode << 8 | ir.modrm; |
6034 | goto no_support; | |
6035 | } | |
6036 | switch (ir.reg) | |
6037 | { | |
6038 | case 0: | |
6039 | case 2: | |
6040 | case 3: | |
6041 | case 4: | |
6042 | case 8: | |
6043 | if (opcode & 2) | |
cf648174 | 6044 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 6045 | else |
cf648174 | 6046 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); |
7ad10968 HZ |
6047 | break; |
6048 | default: | |
cf648174 | 6049 | ir.addr -= 3; |
7ad10968 HZ |
6050 | opcode = opcode << 8 | ir.modrm; |
6051 | goto no_support; | |
6052 | break; | |
6053 | } | |
6054 | break; | |
6055 | ||
a38bba38 MS |
6056 | case 0x0f21: /* mov reg, drN */ |
6057 | case 0x0f23: /* mov drN, reg */ | |
7ad10968 HZ |
6058 | if (i386_record_modrm (&ir)) |
6059 | return -1; | |
6060 | if ((ir.modrm & 0xc0) != 0xc0 || ir.reg == 4 | |
6061 | || ir.reg == 5 || ir.reg >= 8) | |
6062 | { | |
cf648174 | 6063 | ir.addr -= 3; |
7ad10968 HZ |
6064 | opcode = opcode << 8 | ir.modrm; |
6065 | goto no_support; | |
6066 | } | |
6067 | if (opcode & 2) | |
cf648174 | 6068 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 | 6069 | else |
cf648174 | 6070 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); |
7ad10968 HZ |
6071 | break; |
6072 | ||
a38bba38 | 6073 | case 0x0f06: /* clts */ |
cf648174 | 6074 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); |
7ad10968 HZ |
6075 | break; |
6076 | ||
a3c4230a HZ |
6077 | /* MMX 3DNow! SSE SSE2 SSE3 SSSE3 SSE4 */ |
6078 | ||
6079 | case 0x0f0d: /* 3DNow! prefetch */ | |
6080 | break; | |
6081 | ||
6082 | case 0x0f0e: /* 3DNow! femms */ | |
6083 | case 0x0f77: /* emms */ | |
6084 | if (i386_fpc_regnum_p (gdbarch, I387_FTAG_REGNUM(tdep))) | |
6085 | goto no_support; | |
6086 | record_arch_list_add_reg (ir.regcache, I387_FTAG_REGNUM(tdep)); | |
6087 | break; | |
6088 | ||
6089 | case 0x0f0f: /* 3DNow! data */ | |
6090 | if (i386_record_modrm (&ir)) | |
6091 | return -1; | |
6092 | if (target_read_memory (ir.addr, &opcode8, 1)) | |
6093 | { | |
6094 | printf_unfiltered (_("Process record: error reading memory at " | |
6095 | "addr %s len = 1.\n"), | |
6096 | paddress (gdbarch, ir.addr)); | |
6097 | return -1; | |
6098 | } | |
6099 | ir.addr++; | |
6100 | switch (opcode8) | |
6101 | { | |
6102 | case 0x0c: /* 3DNow! pi2fw */ | |
6103 | case 0x0d: /* 3DNow! pi2fd */ | |
6104 | case 0x1c: /* 3DNow! pf2iw */ | |
6105 | case 0x1d: /* 3DNow! pf2id */ | |
6106 | case 0x8a: /* 3DNow! pfnacc */ | |
6107 | case 0x8e: /* 3DNow! pfpnacc */ | |
6108 | case 0x90: /* 3DNow! pfcmpge */ | |
6109 | case 0x94: /* 3DNow! pfmin */ | |
6110 | case 0x96: /* 3DNow! pfrcp */ | |
6111 | case 0x97: /* 3DNow! pfrsqrt */ | |
6112 | case 0x9a: /* 3DNow! pfsub */ | |
6113 | case 0x9e: /* 3DNow! pfadd */ | |
6114 | case 0xa0: /* 3DNow! pfcmpgt */ | |
6115 | case 0xa4: /* 3DNow! pfmax */ | |
6116 | case 0xa6: /* 3DNow! pfrcpit1 */ | |
6117 | case 0xa7: /* 3DNow! pfrsqit1 */ | |
6118 | case 0xaa: /* 3DNow! pfsubr */ | |
6119 | case 0xae: /* 3DNow! pfacc */ | |
6120 | case 0xb0: /* 3DNow! pfcmpeq */ | |
6121 | case 0xb4: /* 3DNow! pfmul */ | |
6122 | case 0xb6: /* 3DNow! pfrcpit2 */ | |
6123 | case 0xb7: /* 3DNow! pmulhrw */ | |
6124 | case 0xbb: /* 3DNow! pswapd */ | |
6125 | case 0xbf: /* 3DNow! pavgusb */ | |
6126 | if (!i386_mmx_regnum_p (gdbarch, I387_MM0_REGNUM (tdep) + ir.reg)) | |
6127 | goto no_support_3dnow_data; | |
6128 | record_arch_list_add_reg (ir.regcache, ir.reg); | |
6129 | break; | |
6130 | ||
6131 | default: | |
6132 | no_support_3dnow_data: | |
6133 | opcode = (opcode << 8) | opcode8; | |
6134 | goto no_support; | |
6135 | break; | |
6136 | } | |
6137 | break; | |
6138 | ||
6139 | case 0x0faa: /* rsm */ | |
6140 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
6141 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REAX_REGNUM); | |
6142 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RECX_REGNUM); | |
6143 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDX_REGNUM); | |
6144 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REBX_REGNUM); | |
6145 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESP_REGNUM); | |
6146 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REBP_REGNUM); | |
6147 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_RESI_REGNUM); | |
6148 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REDI_REGNUM); | |
6149 | break; | |
6150 | ||
6151 | case 0x0fae: | |
6152 | if (i386_record_modrm (&ir)) | |
6153 | return -1; | |
6154 | switch(ir.reg) | |
6155 | { | |
6156 | case 0: /* fxsave */ | |
6157 | { | |
6158 | uint64_t tmpu64; | |
6159 | ||
6160 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
6161 | if (i386_record_lea_modrm_addr (&ir, &tmpu64)) | |
6162 | return -1; | |
6163 | if (record_arch_list_add_mem (tmpu64, 512)) | |
6164 | return -1; | |
6165 | } | |
6166 | break; | |
6167 | ||
6168 | case 1: /* fxrstor */ | |
6169 | { | |
6170 | int i; | |
6171 | ||
6172 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
6173 | ||
6174 | for (i = I387_MM0_REGNUM (tdep); | |
6175 | i386_mmx_regnum_p (gdbarch, i); i++) | |
6176 | record_arch_list_add_reg (ir.regcache, i); | |
6177 | ||
6178 | for (i = I387_XMM0_REGNUM (tdep); | |
c131fcee | 6179 | i386_xmm_regnum_p (gdbarch, i); i++) |
a3c4230a HZ |
6180 | record_arch_list_add_reg (ir.regcache, i); |
6181 | ||
6182 | if (i386_mxcsr_regnum_p (gdbarch, I387_MXCSR_REGNUM(tdep))) | |
6183 | record_arch_list_add_reg (ir.regcache, I387_MXCSR_REGNUM(tdep)); | |
6184 | ||
6185 | for (i = I387_ST0_REGNUM (tdep); | |
6186 | i386_fp_regnum_p (gdbarch, i); i++) | |
6187 | record_arch_list_add_reg (ir.regcache, i); | |
6188 | ||
6189 | for (i = I387_FCTRL_REGNUM (tdep); | |
6190 | i386_fpc_regnum_p (gdbarch, i); i++) | |
6191 | record_arch_list_add_reg (ir.regcache, i); | |
6192 | } | |
6193 | break; | |
6194 | ||
6195 | case 2: /* ldmxcsr */ | |
6196 | if (!i386_mxcsr_regnum_p (gdbarch, I387_MXCSR_REGNUM(tdep))) | |
6197 | goto no_support; | |
6198 | record_arch_list_add_reg (ir.regcache, I387_MXCSR_REGNUM(tdep)); | |
6199 | break; | |
6200 | ||
6201 | case 3: /* stmxcsr */ | |
6202 | ir.ot = OT_LONG; | |
6203 | if (i386_record_lea_modrm (&ir)) | |
6204 | return -1; | |
6205 | break; | |
6206 | ||
6207 | case 5: /* lfence */ | |
6208 | case 6: /* mfence */ | |
6209 | case 7: /* sfence clflush */ | |
6210 | break; | |
6211 | ||
6212 | default: | |
6213 | opcode = (opcode << 8) | ir.modrm; | |
6214 | goto no_support; | |
6215 | break; | |
6216 | } | |
6217 | break; | |
6218 | ||
6219 | case 0x0fc3: /* movnti */ | |
6220 | ir.ot = (ir.dflag == 2) ? OT_QUAD : OT_LONG; | |
6221 | if (i386_record_modrm (&ir)) | |
6222 | return -1; | |
6223 | if (ir.mod == 3) | |
6224 | goto no_support; | |
6225 | ir.reg |= rex_r; | |
6226 | if (i386_record_lea_modrm (&ir)) | |
6227 | return -1; | |
6228 | break; | |
6229 | ||
6230 | /* Add prefix to opcode. */ | |
6231 | case 0x0f10: | |
6232 | case 0x0f11: | |
6233 | case 0x0f12: | |
6234 | case 0x0f13: | |
6235 | case 0x0f14: | |
6236 | case 0x0f15: | |
6237 | case 0x0f16: | |
6238 | case 0x0f17: | |
6239 | case 0x0f28: | |
6240 | case 0x0f29: | |
6241 | case 0x0f2a: | |
6242 | case 0x0f2b: | |
6243 | case 0x0f2c: | |
6244 | case 0x0f2d: | |
6245 | case 0x0f2e: | |
6246 | case 0x0f2f: | |
6247 | case 0x0f38: | |
6248 | case 0x0f39: | |
6249 | case 0x0f3a: | |
6250 | case 0x0f50: | |
6251 | case 0x0f51: | |
6252 | case 0x0f52: | |
6253 | case 0x0f53: | |
6254 | case 0x0f54: | |
6255 | case 0x0f55: | |
6256 | case 0x0f56: | |
6257 | case 0x0f57: | |
6258 | case 0x0f58: | |
6259 | case 0x0f59: | |
6260 | case 0x0f5a: | |
6261 | case 0x0f5b: | |
6262 | case 0x0f5c: | |
6263 | case 0x0f5d: | |
6264 | case 0x0f5e: | |
6265 | case 0x0f5f: | |
6266 | case 0x0f60: | |
6267 | case 0x0f61: | |
6268 | case 0x0f62: | |
6269 | case 0x0f63: | |
6270 | case 0x0f64: | |
6271 | case 0x0f65: | |
6272 | case 0x0f66: | |
6273 | case 0x0f67: | |
6274 | case 0x0f68: | |
6275 | case 0x0f69: | |
6276 | case 0x0f6a: | |
6277 | case 0x0f6b: | |
6278 | case 0x0f6c: | |
6279 | case 0x0f6d: | |
6280 | case 0x0f6e: | |
6281 | case 0x0f6f: | |
6282 | case 0x0f70: | |
6283 | case 0x0f71: | |
6284 | case 0x0f72: | |
6285 | case 0x0f73: | |
6286 | case 0x0f74: | |
6287 | case 0x0f75: | |
6288 | case 0x0f76: | |
6289 | case 0x0f7c: | |
6290 | case 0x0f7d: | |
6291 | case 0x0f7e: | |
6292 | case 0x0f7f: | |
6293 | case 0x0fb8: | |
6294 | case 0x0fc2: | |
6295 | case 0x0fc4: | |
6296 | case 0x0fc5: | |
6297 | case 0x0fc6: | |
6298 | case 0x0fd0: | |
6299 | case 0x0fd1: | |
6300 | case 0x0fd2: | |
6301 | case 0x0fd3: | |
6302 | case 0x0fd4: | |
6303 | case 0x0fd5: | |
6304 | case 0x0fd6: | |
6305 | case 0x0fd7: | |
6306 | case 0x0fd8: | |
6307 | case 0x0fd9: | |
6308 | case 0x0fda: | |
6309 | case 0x0fdb: | |
6310 | case 0x0fdc: | |
6311 | case 0x0fdd: | |
6312 | case 0x0fde: | |
6313 | case 0x0fdf: | |
6314 | case 0x0fe0: | |
6315 | case 0x0fe1: | |
6316 | case 0x0fe2: | |
6317 | case 0x0fe3: | |
6318 | case 0x0fe4: | |
6319 | case 0x0fe5: | |
6320 | case 0x0fe6: | |
6321 | case 0x0fe7: | |
6322 | case 0x0fe8: | |
6323 | case 0x0fe9: | |
6324 | case 0x0fea: | |
6325 | case 0x0feb: | |
6326 | case 0x0fec: | |
6327 | case 0x0fed: | |
6328 | case 0x0fee: | |
6329 | case 0x0fef: | |
6330 | case 0x0ff0: | |
6331 | case 0x0ff1: | |
6332 | case 0x0ff2: | |
6333 | case 0x0ff3: | |
6334 | case 0x0ff4: | |
6335 | case 0x0ff5: | |
6336 | case 0x0ff6: | |
6337 | case 0x0ff7: | |
6338 | case 0x0ff8: | |
6339 | case 0x0ff9: | |
6340 | case 0x0ffa: | |
6341 | case 0x0ffb: | |
6342 | case 0x0ffc: | |
6343 | case 0x0ffd: | |
6344 | case 0x0ffe: | |
6345 | switch (prefixes) | |
6346 | { | |
6347 | case PREFIX_REPNZ: | |
6348 | opcode |= 0xf20000; | |
6349 | break; | |
6350 | case PREFIX_DATA: | |
6351 | opcode |= 0x660000; | |
6352 | break; | |
6353 | case PREFIX_REPZ: | |
6354 | opcode |= 0xf30000; | |
6355 | break; | |
6356 | } | |
6357 | reswitch_prefix_add: | |
6358 | switch (opcode) | |
6359 | { | |
6360 | case 0x0f38: | |
6361 | case 0x660f38: | |
6362 | case 0xf20f38: | |
6363 | case 0x0f3a: | |
6364 | case 0x660f3a: | |
6365 | if (target_read_memory (ir.addr, &opcode8, 1)) | |
6366 | { | |
6367 | printf_unfiltered (_("Process record: error reading memory at " | |
6368 | "addr %s len = 1.\n"), | |
6369 | paddress (gdbarch, ir.addr)); | |
6370 | return -1; | |
6371 | } | |
6372 | ir.addr++; | |
6373 | opcode = (uint32_t) opcode8 | opcode << 8; | |
6374 | goto reswitch_prefix_add; | |
6375 | break; | |
6376 | ||
6377 | case 0x0f10: /* movups */ | |
6378 | case 0x660f10: /* movupd */ | |
6379 | case 0xf30f10: /* movss */ | |
6380 | case 0xf20f10: /* movsd */ | |
6381 | case 0x0f12: /* movlps */ | |
6382 | case 0x660f12: /* movlpd */ | |
6383 | case 0xf30f12: /* movsldup */ | |
6384 | case 0xf20f12: /* movddup */ | |
6385 | case 0x0f14: /* unpcklps */ | |
6386 | case 0x660f14: /* unpcklpd */ | |
6387 | case 0x0f15: /* unpckhps */ | |
6388 | case 0x660f15: /* unpckhpd */ | |
6389 | case 0x0f16: /* movhps */ | |
6390 | case 0x660f16: /* movhpd */ | |
6391 | case 0xf30f16: /* movshdup */ | |
6392 | case 0x0f28: /* movaps */ | |
6393 | case 0x660f28: /* movapd */ | |
6394 | case 0x0f2a: /* cvtpi2ps */ | |
6395 | case 0x660f2a: /* cvtpi2pd */ | |
6396 | case 0xf30f2a: /* cvtsi2ss */ | |
6397 | case 0xf20f2a: /* cvtsi2sd */ | |
6398 | case 0x0f2c: /* cvttps2pi */ | |
6399 | case 0x660f2c: /* cvttpd2pi */ | |
6400 | case 0x0f2d: /* cvtps2pi */ | |
6401 | case 0x660f2d: /* cvtpd2pi */ | |
6402 | case 0x660f3800: /* pshufb */ | |
6403 | case 0x660f3801: /* phaddw */ | |
6404 | case 0x660f3802: /* phaddd */ | |
6405 | case 0x660f3803: /* phaddsw */ | |
6406 | case 0x660f3804: /* pmaddubsw */ | |
6407 | case 0x660f3805: /* phsubw */ | |
6408 | case 0x660f3806: /* phsubd */ | |
4f7d61a8 | 6409 | case 0x660f3807: /* phsubsw */ |
a3c4230a HZ |
6410 | case 0x660f3808: /* psignb */ |
6411 | case 0x660f3809: /* psignw */ | |
6412 | case 0x660f380a: /* psignd */ | |
6413 | case 0x660f380b: /* pmulhrsw */ | |
6414 | case 0x660f3810: /* pblendvb */ | |
6415 | case 0x660f3814: /* blendvps */ | |
6416 | case 0x660f3815: /* blendvpd */ | |
6417 | case 0x660f381c: /* pabsb */ | |
6418 | case 0x660f381d: /* pabsw */ | |
6419 | case 0x660f381e: /* pabsd */ | |
6420 | case 0x660f3820: /* pmovsxbw */ | |
6421 | case 0x660f3821: /* pmovsxbd */ | |
6422 | case 0x660f3822: /* pmovsxbq */ | |
6423 | case 0x660f3823: /* pmovsxwd */ | |
6424 | case 0x660f3824: /* pmovsxwq */ | |
6425 | case 0x660f3825: /* pmovsxdq */ | |
6426 | case 0x660f3828: /* pmuldq */ | |
6427 | case 0x660f3829: /* pcmpeqq */ | |
6428 | case 0x660f382a: /* movntdqa */ | |
6429 | case 0x660f3a08: /* roundps */ | |
6430 | case 0x660f3a09: /* roundpd */ | |
6431 | case 0x660f3a0a: /* roundss */ | |
6432 | case 0x660f3a0b: /* roundsd */ | |
6433 | case 0x660f3a0c: /* blendps */ | |
6434 | case 0x660f3a0d: /* blendpd */ | |
6435 | case 0x660f3a0e: /* pblendw */ | |
6436 | case 0x660f3a0f: /* palignr */ | |
6437 | case 0x660f3a20: /* pinsrb */ | |
6438 | case 0x660f3a21: /* insertps */ | |
6439 | case 0x660f3a22: /* pinsrd pinsrq */ | |
6440 | case 0x660f3a40: /* dpps */ | |
6441 | case 0x660f3a41: /* dppd */ | |
6442 | case 0x660f3a42: /* mpsadbw */ | |
6443 | case 0x660f3a60: /* pcmpestrm */ | |
6444 | case 0x660f3a61: /* pcmpestri */ | |
6445 | case 0x660f3a62: /* pcmpistrm */ | |
6446 | case 0x660f3a63: /* pcmpistri */ | |
6447 | case 0x0f51: /* sqrtps */ | |
6448 | case 0x660f51: /* sqrtpd */ | |
6449 | case 0xf20f51: /* sqrtsd */ | |
6450 | case 0xf30f51: /* sqrtss */ | |
6451 | case 0x0f52: /* rsqrtps */ | |
6452 | case 0xf30f52: /* rsqrtss */ | |
6453 | case 0x0f53: /* rcpps */ | |
6454 | case 0xf30f53: /* rcpss */ | |
6455 | case 0x0f54: /* andps */ | |
6456 | case 0x660f54: /* andpd */ | |
6457 | case 0x0f55: /* andnps */ | |
6458 | case 0x660f55: /* andnpd */ | |
6459 | case 0x0f56: /* orps */ | |
6460 | case 0x660f56: /* orpd */ | |
6461 | case 0x0f57: /* xorps */ | |
6462 | case 0x660f57: /* xorpd */ | |
6463 | case 0x0f58: /* addps */ | |
6464 | case 0x660f58: /* addpd */ | |
6465 | case 0xf20f58: /* addsd */ | |
6466 | case 0xf30f58: /* addss */ | |
6467 | case 0x0f59: /* mulps */ | |
6468 | case 0x660f59: /* mulpd */ | |
6469 | case 0xf20f59: /* mulsd */ | |
6470 | case 0xf30f59: /* mulss */ | |
6471 | case 0x0f5a: /* cvtps2pd */ | |
6472 | case 0x660f5a: /* cvtpd2ps */ | |
6473 | case 0xf20f5a: /* cvtsd2ss */ | |
6474 | case 0xf30f5a: /* cvtss2sd */ | |
6475 | case 0x0f5b: /* cvtdq2ps */ | |
6476 | case 0x660f5b: /* cvtps2dq */ | |
6477 | case 0xf30f5b: /* cvttps2dq */ | |
6478 | case 0x0f5c: /* subps */ | |
6479 | case 0x660f5c: /* subpd */ | |
6480 | case 0xf20f5c: /* subsd */ | |
6481 | case 0xf30f5c: /* subss */ | |
6482 | case 0x0f5d: /* minps */ | |
6483 | case 0x660f5d: /* minpd */ | |
6484 | case 0xf20f5d: /* minsd */ | |
6485 | case 0xf30f5d: /* minss */ | |
6486 | case 0x0f5e: /* divps */ | |
6487 | case 0x660f5e: /* divpd */ | |
6488 | case 0xf20f5e: /* divsd */ | |
6489 | case 0xf30f5e: /* divss */ | |
6490 | case 0x0f5f: /* maxps */ | |
6491 | case 0x660f5f: /* maxpd */ | |
6492 | case 0xf20f5f: /* maxsd */ | |
6493 | case 0xf30f5f: /* maxss */ | |
6494 | case 0x660f60: /* punpcklbw */ | |
6495 | case 0x660f61: /* punpcklwd */ | |
6496 | case 0x660f62: /* punpckldq */ | |
6497 | case 0x660f63: /* packsswb */ | |
6498 | case 0x660f64: /* pcmpgtb */ | |
6499 | case 0x660f65: /* pcmpgtw */ | |
56d2815c | 6500 | case 0x660f66: /* pcmpgtd */ |
a3c4230a HZ |
6501 | case 0x660f67: /* packuswb */ |
6502 | case 0x660f68: /* punpckhbw */ | |
6503 | case 0x660f69: /* punpckhwd */ | |
6504 | case 0x660f6a: /* punpckhdq */ | |
6505 | case 0x660f6b: /* packssdw */ | |
6506 | case 0x660f6c: /* punpcklqdq */ | |
6507 | case 0x660f6d: /* punpckhqdq */ | |
6508 | case 0x660f6e: /* movd */ | |
6509 | case 0x660f6f: /* movdqa */ | |
6510 | case 0xf30f6f: /* movdqu */ | |
6511 | case 0x660f70: /* pshufd */ | |
6512 | case 0xf20f70: /* pshuflw */ | |
6513 | case 0xf30f70: /* pshufhw */ | |
6514 | case 0x660f74: /* pcmpeqb */ | |
6515 | case 0x660f75: /* pcmpeqw */ | |
56d2815c | 6516 | case 0x660f76: /* pcmpeqd */ |
a3c4230a HZ |
6517 | case 0x660f7c: /* haddpd */ |
6518 | case 0xf20f7c: /* haddps */ | |
6519 | case 0x660f7d: /* hsubpd */ | |
6520 | case 0xf20f7d: /* hsubps */ | |
6521 | case 0xf30f7e: /* movq */ | |
6522 | case 0x0fc2: /* cmpps */ | |
6523 | case 0x660fc2: /* cmppd */ | |
6524 | case 0xf20fc2: /* cmpsd */ | |
6525 | case 0xf30fc2: /* cmpss */ | |
6526 | case 0x660fc4: /* pinsrw */ | |
6527 | case 0x0fc6: /* shufps */ | |
6528 | case 0x660fc6: /* shufpd */ | |
6529 | case 0x660fd0: /* addsubpd */ | |
6530 | case 0xf20fd0: /* addsubps */ | |
6531 | case 0x660fd1: /* psrlw */ | |
6532 | case 0x660fd2: /* psrld */ | |
6533 | case 0x660fd3: /* psrlq */ | |
6534 | case 0x660fd4: /* paddq */ | |
6535 | case 0x660fd5: /* pmullw */ | |
6536 | case 0xf30fd6: /* movq2dq */ | |
6537 | case 0x660fd8: /* psubusb */ | |
6538 | case 0x660fd9: /* psubusw */ | |
6539 | case 0x660fda: /* pminub */ | |
6540 | case 0x660fdb: /* pand */ | |
6541 | case 0x660fdc: /* paddusb */ | |
6542 | case 0x660fdd: /* paddusw */ | |
6543 | case 0x660fde: /* pmaxub */ | |
6544 | case 0x660fdf: /* pandn */ | |
6545 | case 0x660fe0: /* pavgb */ | |
6546 | case 0x660fe1: /* psraw */ | |
6547 | case 0x660fe2: /* psrad */ | |
6548 | case 0x660fe3: /* pavgw */ | |
6549 | case 0x660fe4: /* pmulhuw */ | |
6550 | case 0x660fe5: /* pmulhw */ | |
6551 | case 0x660fe6: /* cvttpd2dq */ | |
6552 | case 0xf20fe6: /* cvtpd2dq */ | |
6553 | case 0xf30fe6: /* cvtdq2pd */ | |
6554 | case 0x660fe8: /* psubsb */ | |
6555 | case 0x660fe9: /* psubsw */ | |
6556 | case 0x660fea: /* pminsw */ | |
6557 | case 0x660feb: /* por */ | |
6558 | case 0x660fec: /* paddsb */ | |
6559 | case 0x660fed: /* paddsw */ | |
6560 | case 0x660fee: /* pmaxsw */ | |
6561 | case 0x660fef: /* pxor */ | |
4f7d61a8 | 6562 | case 0xf20ff0: /* lddqu */ |
a3c4230a HZ |
6563 | case 0x660ff1: /* psllw */ |
6564 | case 0x660ff2: /* pslld */ | |
6565 | case 0x660ff3: /* psllq */ | |
6566 | case 0x660ff4: /* pmuludq */ | |
6567 | case 0x660ff5: /* pmaddwd */ | |
6568 | case 0x660ff6: /* psadbw */ | |
6569 | case 0x660ff8: /* psubb */ | |
6570 | case 0x660ff9: /* psubw */ | |
56d2815c | 6571 | case 0x660ffa: /* psubd */ |
a3c4230a HZ |
6572 | case 0x660ffb: /* psubq */ |
6573 | case 0x660ffc: /* paddb */ | |
6574 | case 0x660ffd: /* paddw */ | |
56d2815c | 6575 | case 0x660ffe: /* paddd */ |
a3c4230a HZ |
6576 | if (i386_record_modrm (&ir)) |
6577 | return -1; | |
6578 | ir.reg |= rex_r; | |
c131fcee | 6579 | if (!i386_xmm_regnum_p (gdbarch, I387_XMM0_REGNUM (tdep) + ir.reg)) |
a3c4230a HZ |
6580 | goto no_support; |
6581 | record_arch_list_add_reg (ir.regcache, | |
6582 | I387_XMM0_REGNUM (tdep) + ir.reg); | |
6583 | if ((opcode & 0xfffffffc) == 0x660f3a60) | |
6584 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
6585 | break; | |
6586 | ||
6587 | case 0x0f11: /* movups */ | |
6588 | case 0x660f11: /* movupd */ | |
6589 | case 0xf30f11: /* movss */ | |
6590 | case 0xf20f11: /* movsd */ | |
6591 | case 0x0f13: /* movlps */ | |
6592 | case 0x660f13: /* movlpd */ | |
6593 | case 0x0f17: /* movhps */ | |
6594 | case 0x660f17: /* movhpd */ | |
6595 | case 0x0f29: /* movaps */ | |
6596 | case 0x660f29: /* movapd */ | |
6597 | case 0x660f3a14: /* pextrb */ | |
6598 | case 0x660f3a15: /* pextrw */ | |
6599 | case 0x660f3a16: /* pextrd pextrq */ | |
6600 | case 0x660f3a17: /* extractps */ | |
6601 | case 0x660f7f: /* movdqa */ | |
6602 | case 0xf30f7f: /* movdqu */ | |
6603 | if (i386_record_modrm (&ir)) | |
6604 | return -1; | |
6605 | if (ir.mod == 3) | |
6606 | { | |
6607 | if (opcode == 0x0f13 || opcode == 0x660f13 | |
6608 | || opcode == 0x0f17 || opcode == 0x660f17) | |
6609 | goto no_support; | |
6610 | ir.rm |= ir.rex_b; | |
1777feb0 MS |
6611 | if (!i386_xmm_regnum_p (gdbarch, |
6612 | I387_XMM0_REGNUM (tdep) + ir.rm)) | |
a3c4230a HZ |
6613 | goto no_support; |
6614 | record_arch_list_add_reg (ir.regcache, | |
6615 | I387_XMM0_REGNUM (tdep) + ir.rm); | |
6616 | } | |
6617 | else | |
6618 | { | |
6619 | switch (opcode) | |
6620 | { | |
6621 | case 0x660f3a14: | |
6622 | ir.ot = OT_BYTE; | |
6623 | break; | |
6624 | case 0x660f3a15: | |
6625 | ir.ot = OT_WORD; | |
6626 | break; | |
6627 | case 0x660f3a16: | |
6628 | ir.ot = OT_LONG; | |
6629 | break; | |
6630 | case 0x660f3a17: | |
6631 | ir.ot = OT_QUAD; | |
6632 | break; | |
6633 | default: | |
6634 | ir.ot = OT_DQUAD; | |
6635 | break; | |
6636 | } | |
6637 | if (i386_record_lea_modrm (&ir)) | |
6638 | return -1; | |
6639 | } | |
6640 | break; | |
6641 | ||
6642 | case 0x0f2b: /* movntps */ | |
6643 | case 0x660f2b: /* movntpd */ | |
6644 | case 0x0fe7: /* movntq */ | |
6645 | case 0x660fe7: /* movntdq */ | |
6646 | if (ir.mod == 3) | |
6647 | goto no_support; | |
6648 | if (opcode == 0x0fe7) | |
6649 | ir.ot = OT_QUAD; | |
6650 | else | |
6651 | ir.ot = OT_DQUAD; | |
6652 | if (i386_record_lea_modrm (&ir)) | |
6653 | return -1; | |
6654 | break; | |
6655 | ||
6656 | case 0xf30f2c: /* cvttss2si */ | |
6657 | case 0xf20f2c: /* cvttsd2si */ | |
6658 | case 0xf30f2d: /* cvtss2si */ | |
6659 | case 0xf20f2d: /* cvtsd2si */ | |
6660 | case 0xf20f38f0: /* crc32 */ | |
6661 | case 0xf20f38f1: /* crc32 */ | |
6662 | case 0x0f50: /* movmskps */ | |
6663 | case 0x660f50: /* movmskpd */ | |
6664 | case 0x0fc5: /* pextrw */ | |
6665 | case 0x660fc5: /* pextrw */ | |
6666 | case 0x0fd7: /* pmovmskb */ | |
6667 | case 0x660fd7: /* pmovmskb */ | |
6668 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg | rex_r); | |
6669 | break; | |
6670 | ||
6671 | case 0x0f3800: /* pshufb */ | |
6672 | case 0x0f3801: /* phaddw */ | |
6673 | case 0x0f3802: /* phaddd */ | |
6674 | case 0x0f3803: /* phaddsw */ | |
6675 | case 0x0f3804: /* pmaddubsw */ | |
6676 | case 0x0f3805: /* phsubw */ | |
6677 | case 0x0f3806: /* phsubd */ | |
4f7d61a8 | 6678 | case 0x0f3807: /* phsubsw */ |
a3c4230a HZ |
6679 | case 0x0f3808: /* psignb */ |
6680 | case 0x0f3809: /* psignw */ | |
6681 | case 0x0f380a: /* psignd */ | |
6682 | case 0x0f380b: /* pmulhrsw */ | |
6683 | case 0x0f381c: /* pabsb */ | |
6684 | case 0x0f381d: /* pabsw */ | |
6685 | case 0x0f381e: /* pabsd */ | |
6686 | case 0x0f382b: /* packusdw */ | |
6687 | case 0x0f3830: /* pmovzxbw */ | |
6688 | case 0x0f3831: /* pmovzxbd */ | |
6689 | case 0x0f3832: /* pmovzxbq */ | |
6690 | case 0x0f3833: /* pmovzxwd */ | |
6691 | case 0x0f3834: /* pmovzxwq */ | |
6692 | case 0x0f3835: /* pmovzxdq */ | |
6693 | case 0x0f3837: /* pcmpgtq */ | |
6694 | case 0x0f3838: /* pminsb */ | |
6695 | case 0x0f3839: /* pminsd */ | |
6696 | case 0x0f383a: /* pminuw */ | |
6697 | case 0x0f383b: /* pminud */ | |
6698 | case 0x0f383c: /* pmaxsb */ | |
6699 | case 0x0f383d: /* pmaxsd */ | |
6700 | case 0x0f383e: /* pmaxuw */ | |
6701 | case 0x0f383f: /* pmaxud */ | |
6702 | case 0x0f3840: /* pmulld */ | |
6703 | case 0x0f3841: /* phminposuw */ | |
6704 | case 0x0f3a0f: /* palignr */ | |
6705 | case 0x0f60: /* punpcklbw */ | |
6706 | case 0x0f61: /* punpcklwd */ | |
6707 | case 0x0f62: /* punpckldq */ | |
6708 | case 0x0f63: /* packsswb */ | |
6709 | case 0x0f64: /* pcmpgtb */ | |
6710 | case 0x0f65: /* pcmpgtw */ | |
56d2815c | 6711 | case 0x0f66: /* pcmpgtd */ |
a3c4230a HZ |
6712 | case 0x0f67: /* packuswb */ |
6713 | case 0x0f68: /* punpckhbw */ | |
6714 | case 0x0f69: /* punpckhwd */ | |
6715 | case 0x0f6a: /* punpckhdq */ | |
6716 | case 0x0f6b: /* packssdw */ | |
6717 | case 0x0f6e: /* movd */ | |
6718 | case 0x0f6f: /* movq */ | |
6719 | case 0x0f70: /* pshufw */ | |
6720 | case 0x0f74: /* pcmpeqb */ | |
6721 | case 0x0f75: /* pcmpeqw */ | |
56d2815c | 6722 | case 0x0f76: /* pcmpeqd */ |
a3c4230a HZ |
6723 | case 0x0fc4: /* pinsrw */ |
6724 | case 0x0fd1: /* psrlw */ | |
6725 | case 0x0fd2: /* psrld */ | |
6726 | case 0x0fd3: /* psrlq */ | |
6727 | case 0x0fd4: /* paddq */ | |
6728 | case 0x0fd5: /* pmullw */ | |
6729 | case 0xf20fd6: /* movdq2q */ | |
6730 | case 0x0fd8: /* psubusb */ | |
6731 | case 0x0fd9: /* psubusw */ | |
6732 | case 0x0fda: /* pminub */ | |
6733 | case 0x0fdb: /* pand */ | |
6734 | case 0x0fdc: /* paddusb */ | |
6735 | case 0x0fdd: /* paddusw */ | |
6736 | case 0x0fde: /* pmaxub */ | |
6737 | case 0x0fdf: /* pandn */ | |
6738 | case 0x0fe0: /* pavgb */ | |
6739 | case 0x0fe1: /* psraw */ | |
6740 | case 0x0fe2: /* psrad */ | |
6741 | case 0x0fe3: /* pavgw */ | |
6742 | case 0x0fe4: /* pmulhuw */ | |
6743 | case 0x0fe5: /* pmulhw */ | |
6744 | case 0x0fe8: /* psubsb */ | |
6745 | case 0x0fe9: /* psubsw */ | |
6746 | case 0x0fea: /* pminsw */ | |
6747 | case 0x0feb: /* por */ | |
6748 | case 0x0fec: /* paddsb */ | |
6749 | case 0x0fed: /* paddsw */ | |
6750 | case 0x0fee: /* pmaxsw */ | |
6751 | case 0x0fef: /* pxor */ | |
6752 | case 0x0ff1: /* psllw */ | |
6753 | case 0x0ff2: /* pslld */ | |
6754 | case 0x0ff3: /* psllq */ | |
6755 | case 0x0ff4: /* pmuludq */ | |
6756 | case 0x0ff5: /* pmaddwd */ | |
6757 | case 0x0ff6: /* psadbw */ | |
6758 | case 0x0ff8: /* psubb */ | |
6759 | case 0x0ff9: /* psubw */ | |
56d2815c | 6760 | case 0x0ffa: /* psubd */ |
a3c4230a HZ |
6761 | case 0x0ffb: /* psubq */ |
6762 | case 0x0ffc: /* paddb */ | |
6763 | case 0x0ffd: /* paddw */ | |
56d2815c | 6764 | case 0x0ffe: /* paddd */ |
a3c4230a HZ |
6765 | if (i386_record_modrm (&ir)) |
6766 | return -1; | |
6767 | if (!i386_mmx_regnum_p (gdbarch, I387_MM0_REGNUM (tdep) + ir.reg)) | |
6768 | goto no_support; | |
6769 | record_arch_list_add_reg (ir.regcache, | |
6770 | I387_MM0_REGNUM (tdep) + ir.reg); | |
6771 | break; | |
6772 | ||
6773 | case 0x0f71: /* psllw */ | |
6774 | case 0x0f72: /* pslld */ | |
6775 | case 0x0f73: /* psllq */ | |
6776 | if (i386_record_modrm (&ir)) | |
6777 | return -1; | |
6778 | if (!i386_mmx_regnum_p (gdbarch, I387_MM0_REGNUM (tdep) + ir.rm)) | |
6779 | goto no_support; | |
6780 | record_arch_list_add_reg (ir.regcache, | |
6781 | I387_MM0_REGNUM (tdep) + ir.rm); | |
6782 | break; | |
6783 | ||
6784 | case 0x660f71: /* psllw */ | |
6785 | case 0x660f72: /* pslld */ | |
6786 | case 0x660f73: /* psllq */ | |
6787 | if (i386_record_modrm (&ir)) | |
6788 | return -1; | |
6789 | ir.rm |= ir.rex_b; | |
c131fcee | 6790 | if (!i386_xmm_regnum_p (gdbarch, I387_XMM0_REGNUM (tdep) + ir.rm)) |
a3c4230a HZ |
6791 | goto no_support; |
6792 | record_arch_list_add_reg (ir.regcache, | |
6793 | I387_XMM0_REGNUM (tdep) + ir.rm); | |
6794 | break; | |
6795 | ||
6796 | case 0x0f7e: /* movd */ | |
6797 | case 0x660f7e: /* movd */ | |
6798 | if (i386_record_modrm (&ir)) | |
6799 | return -1; | |
6800 | if (ir.mod == 3) | |
6801 | I386_RECORD_ARCH_LIST_ADD_REG (ir.rm | ir.rex_b); | |
6802 | else | |
6803 | { | |
6804 | if (ir.dflag == 2) | |
6805 | ir.ot = OT_QUAD; | |
6806 | else | |
6807 | ir.ot = OT_LONG; | |
6808 | if (i386_record_lea_modrm (&ir)) | |
6809 | return -1; | |
6810 | } | |
6811 | break; | |
6812 | ||
6813 | case 0x0f7f: /* movq */ | |
6814 | if (i386_record_modrm (&ir)) | |
6815 | return -1; | |
6816 | if (ir.mod == 3) | |
6817 | { | |
6818 | if (!i386_mmx_regnum_p (gdbarch, I387_MM0_REGNUM (tdep) + ir.rm)) | |
6819 | goto no_support; | |
6820 | record_arch_list_add_reg (ir.regcache, | |
6821 | I387_MM0_REGNUM (tdep) + ir.rm); | |
6822 | } | |
6823 | else | |
6824 | { | |
6825 | ir.ot = OT_QUAD; | |
6826 | if (i386_record_lea_modrm (&ir)) | |
6827 | return -1; | |
6828 | } | |
6829 | break; | |
6830 | ||
6831 | case 0xf30fb8: /* popcnt */ | |
6832 | if (i386_record_modrm (&ir)) | |
6833 | return -1; | |
6834 | I386_RECORD_ARCH_LIST_ADD_REG (ir.reg); | |
6835 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
6836 | break; | |
6837 | ||
6838 | case 0x660fd6: /* movq */ | |
6839 | if (i386_record_modrm (&ir)) | |
6840 | return -1; | |
6841 | if (ir.mod == 3) | |
6842 | { | |
6843 | ir.rm |= ir.rex_b; | |
1777feb0 MS |
6844 | if (!i386_xmm_regnum_p (gdbarch, |
6845 | I387_XMM0_REGNUM (tdep) + ir.rm)) | |
a3c4230a HZ |
6846 | goto no_support; |
6847 | record_arch_list_add_reg (ir.regcache, | |
6848 | I387_XMM0_REGNUM (tdep) + ir.rm); | |
6849 | } | |
6850 | else | |
6851 | { | |
6852 | ir.ot = OT_QUAD; | |
6853 | if (i386_record_lea_modrm (&ir)) | |
6854 | return -1; | |
6855 | } | |
6856 | break; | |
6857 | ||
6858 | case 0x660f3817: /* ptest */ | |
6859 | case 0x0f2e: /* ucomiss */ | |
6860 | case 0x660f2e: /* ucomisd */ | |
6861 | case 0x0f2f: /* comiss */ | |
6862 | case 0x660f2f: /* comisd */ | |
6863 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNUM); | |
6864 | break; | |
6865 | ||
6866 | case 0x0ff7: /* maskmovq */ | |
6867 | regcache_raw_read_unsigned (ir.regcache, | |
6868 | ir.regmap[X86_RECORD_REDI_REGNUM], | |
6869 | &addr); | |
6870 | if (record_arch_list_add_mem (addr, 64)) | |
6871 | return -1; | |
6872 | break; | |
6873 | ||
6874 | case 0x660ff7: /* maskmovdqu */ | |
6875 | regcache_raw_read_unsigned (ir.regcache, | |
6876 | ir.regmap[X86_RECORD_REDI_REGNUM], | |
6877 | &addr); | |
6878 | if (record_arch_list_add_mem (addr, 128)) | |
6879 | return -1; | |
6880 | break; | |
6881 | ||
6882 | default: | |
6883 | goto no_support; | |
6884 | break; | |
6885 | } | |
6886 | break; | |
7ad10968 HZ |
6887 | |
6888 | default: | |
7ad10968 HZ |
6889 | goto no_support; |
6890 | break; | |
6891 | } | |
6892 | ||
cf648174 HZ |
6893 | /* In the future, maybe still need to deal with need_dasm. */ |
6894 | I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_REIP_REGNUM); | |
7ad10968 HZ |
6895 | if (record_arch_list_add_end ()) |
6896 | return -1; | |
6897 | ||
6898 | return 0; | |
6899 | ||
01fe1b41 | 6900 | no_support: |
a3c4230a HZ |
6901 | printf_unfiltered (_("Process record does not support instruction 0x%02x " |
6902 | "at address %s.\n"), | |
6903 | (unsigned int) (opcode), | |
6904 | paddress (gdbarch, ir.orig_addr)); | |
7ad10968 HZ |
6905 | return -1; |
6906 | } | |
6907 | ||
cf648174 HZ |
6908 | static const int i386_record_regmap[] = |
6909 | { | |
6910 | I386_EAX_REGNUM, I386_ECX_REGNUM, I386_EDX_REGNUM, I386_EBX_REGNUM, | |
6911 | I386_ESP_REGNUM, I386_EBP_REGNUM, I386_ESI_REGNUM, I386_EDI_REGNUM, | |
6912 | 0, 0, 0, 0, 0, 0, 0, 0, | |
6913 | I386_EIP_REGNUM, I386_EFLAGS_REGNUM, I386_CS_REGNUM, I386_SS_REGNUM, | |
6914 | I386_DS_REGNUM, I386_ES_REGNUM, I386_FS_REGNUM, I386_GS_REGNUM | |
6915 | }; | |
6916 | ||
7a697b8d SS |
6917 | /* Check that the given address appears suitable for a fast |
6918 | tracepoint, which on x86 means that we need an instruction of at | |
6919 | least 5 bytes, so that we can overwrite it with a 4-byte-offset | |
6920 | jump and not have to worry about program jumps to an address in the | |
6921 | middle of the tracepoint jump. Returns 1 if OK, and writes a size | |
6922 | of instruction to replace, and 0 if not, plus an explanatory | |
6923 | string. */ | |
6924 | ||
6925 | static int | |
6926 | i386_fast_tracepoint_valid_at (struct gdbarch *gdbarch, | |
6927 | CORE_ADDR addr, int *isize, char **msg) | |
6928 | { | |
6929 | int len, jumplen; | |
6930 | static struct ui_file *gdb_null = NULL; | |
6931 | ||
6932 | /* This is based on the target agent using a 4-byte relative jump. | |
6933 | Alternate future possibilities include 8-byte offset for x86-84, | |
6934 | or 3-byte jumps if the program has trampoline space close by. */ | |
6935 | jumplen = 5; | |
6936 | ||
6937 | /* Dummy file descriptor for the disassembler. */ | |
6938 | if (!gdb_null) | |
6939 | gdb_null = ui_file_new (); | |
6940 | ||
6941 | /* Check for fit. */ | |
6942 | len = gdb_print_insn (gdbarch, addr, gdb_null, NULL); | |
6943 | if (len < jumplen) | |
6944 | { | |
6945 | /* Return a bit of target-specific detail to add to the caller's | |
6946 | generic failure message. */ | |
6947 | if (msg) | |
1777feb0 MS |
6948 | *msg = xstrprintf (_("; instruction is only %d bytes long, " |
6949 | "need at least %d bytes for the jump"), | |
7a697b8d SS |
6950 | len, jumplen); |
6951 | return 0; | |
6952 | } | |
6953 | ||
6954 | if (isize) | |
6955 | *isize = len; | |
6956 | if (msg) | |
6957 | *msg = NULL; | |
6958 | return 1; | |
6959 | } | |
6960 | ||
90884b2b L |
6961 | static int |
6962 | i386_validate_tdesc_p (struct gdbarch_tdep *tdep, | |
6963 | struct tdesc_arch_data *tdesc_data) | |
6964 | { | |
6965 | const struct target_desc *tdesc = tdep->tdesc; | |
c131fcee L |
6966 | const struct tdesc_feature *feature_core; |
6967 | const struct tdesc_feature *feature_sse, *feature_avx; | |
90884b2b L |
6968 | int i, num_regs, valid_p; |
6969 | ||
6970 | if (! tdesc_has_registers (tdesc)) | |
6971 | return 0; | |
6972 | ||
6973 | /* Get core registers. */ | |
6974 | feature_core = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.core"); | |
3a13a53b L |
6975 | if (feature_core == NULL) |
6976 | return 0; | |
90884b2b L |
6977 | |
6978 | /* Get SSE registers. */ | |
c131fcee | 6979 | feature_sse = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.sse"); |
90884b2b | 6980 | |
c131fcee L |
6981 | /* Try AVX registers. */ |
6982 | feature_avx = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.avx"); | |
6983 | ||
90884b2b L |
6984 | valid_p = 1; |
6985 | ||
c131fcee L |
6986 | /* The XCR0 bits. */ |
6987 | if (feature_avx) | |
6988 | { | |
3a13a53b L |
6989 | /* AVX register description requires SSE register description. */ |
6990 | if (!feature_sse) | |
6991 | return 0; | |
6992 | ||
c131fcee L |
6993 | tdep->xcr0 = I386_XSTATE_AVX_MASK; |
6994 | ||
6995 | /* It may have been set by OSABI initialization function. */ | |
6996 | if (tdep->num_ymm_regs == 0) | |
6997 | { | |
6998 | tdep->ymmh_register_names = i386_ymmh_names; | |
6999 | tdep->num_ymm_regs = 8; | |
7000 | tdep->ymm0h_regnum = I386_YMM0H_REGNUM; | |
7001 | } | |
7002 | ||
7003 | for (i = 0; i < tdep->num_ymm_regs; i++) | |
7004 | valid_p &= tdesc_numbered_register (feature_avx, tdesc_data, | |
7005 | tdep->ymm0h_regnum + i, | |
7006 | tdep->ymmh_register_names[i]); | |
7007 | } | |
3a13a53b | 7008 | else if (feature_sse) |
c131fcee | 7009 | tdep->xcr0 = I386_XSTATE_SSE_MASK; |
3a13a53b L |
7010 | else |
7011 | { | |
7012 | tdep->xcr0 = I386_XSTATE_X87_MASK; | |
7013 | tdep->num_xmm_regs = 0; | |
7014 | } | |
c131fcee | 7015 | |
90884b2b L |
7016 | num_regs = tdep->num_core_regs; |
7017 | for (i = 0; i < num_regs; i++) | |
7018 | valid_p &= tdesc_numbered_register (feature_core, tdesc_data, i, | |
7019 | tdep->register_names[i]); | |
7020 | ||
3a13a53b L |
7021 | if (feature_sse) |
7022 | { | |
7023 | /* Need to include %mxcsr, so add one. */ | |
7024 | num_regs += tdep->num_xmm_regs + 1; | |
7025 | for (; i < num_regs; i++) | |
7026 | valid_p &= tdesc_numbered_register (feature_sse, tdesc_data, i, | |
7027 | tdep->register_names[i]); | |
7028 | } | |
90884b2b L |
7029 | |
7030 | return valid_p; | |
7031 | } | |
7032 | ||
7ad10968 HZ |
7033 | \f |
7034 | static struct gdbarch * | |
7035 | i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
7036 | { | |
7037 | struct gdbarch_tdep *tdep; | |
7038 | struct gdbarch *gdbarch; | |
90884b2b L |
7039 | struct tdesc_arch_data *tdesc_data; |
7040 | const struct target_desc *tdesc; | |
1ba53b71 | 7041 | int mm0_regnum; |
c131fcee | 7042 | int ymm0_regnum; |
7ad10968 HZ |
7043 | |
7044 | /* If there is already a candidate, use it. */ | |
7045 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
7046 | if (arches != NULL) | |
7047 | return arches->gdbarch; | |
7048 | ||
7049 | /* Allocate space for the new architecture. */ | |
7050 | tdep = XCALLOC (1, struct gdbarch_tdep); | |
7051 | gdbarch = gdbarch_alloc (&info, tdep); | |
7052 | ||
7053 | /* General-purpose registers. */ | |
7054 | tdep->gregset = NULL; | |
7055 | tdep->gregset_reg_offset = NULL; | |
7056 | tdep->gregset_num_regs = I386_NUM_GREGS; | |
7057 | tdep->sizeof_gregset = 0; | |
7058 | ||
7059 | /* Floating-point registers. */ | |
7060 | tdep->fpregset = NULL; | |
7061 | tdep->sizeof_fpregset = I387_SIZEOF_FSAVE; | |
7062 | ||
c131fcee L |
7063 | tdep->xstateregset = NULL; |
7064 | ||
7ad10968 HZ |
7065 | /* The default settings include the FPU registers, the MMX registers |
7066 | and the SSE registers. This can be overridden for a specific ABI | |
7067 | by adjusting the members `st0_regnum', `mm0_regnum' and | |
7068 | `num_xmm_regs' of `struct gdbarch_tdep', otherwise the registers | |
3a13a53b | 7069 | will show up in the output of "info all-registers". */ |
7ad10968 HZ |
7070 | |
7071 | tdep->st0_regnum = I386_ST0_REGNUM; | |
7072 | ||
7ad10968 HZ |
7073 | /* I386_NUM_XREGS includes %mxcsr, so substract one. */ |
7074 | tdep->num_xmm_regs = I386_NUM_XREGS - 1; | |
7075 | ||
7076 | tdep->jb_pc_offset = -1; | |
7077 | tdep->struct_return = pcc_struct_return; | |
7078 | tdep->sigtramp_start = 0; | |
7079 | tdep->sigtramp_end = 0; | |
7080 | tdep->sigtramp_p = i386_sigtramp_p; | |
7081 | tdep->sigcontext_addr = NULL; | |
7082 | tdep->sc_reg_offset = NULL; | |
7083 | tdep->sc_pc_offset = -1; | |
7084 | tdep->sc_sp_offset = -1; | |
7085 | ||
c131fcee L |
7086 | tdep->xsave_xcr0_offset = -1; |
7087 | ||
cf648174 HZ |
7088 | tdep->record_regmap = i386_record_regmap; |
7089 | ||
7ad10968 HZ |
7090 | /* The format used for `long double' on almost all i386 targets is |
7091 | the i387 extended floating-point format. In fact, of all targets | |
7092 | in the GCC 2.95 tree, only OSF/1 does it different, and insists | |
7093 | on having a `long double' that's not `long' at all. */ | |
7094 | set_gdbarch_long_double_format (gdbarch, floatformats_i387_ext); | |
7095 | ||
7096 | /* Although the i387 extended floating-point has only 80 significant | |
7097 | bits, a `long double' actually takes up 96, probably to enforce | |
7098 | alignment. */ | |
7099 | set_gdbarch_long_double_bit (gdbarch, 96); | |
7100 | ||
7ad10968 HZ |
7101 | /* Register numbers of various important registers. */ |
7102 | set_gdbarch_sp_regnum (gdbarch, I386_ESP_REGNUM); /* %esp */ | |
7103 | set_gdbarch_pc_regnum (gdbarch, I386_EIP_REGNUM); /* %eip */ | |
7104 | set_gdbarch_ps_regnum (gdbarch, I386_EFLAGS_REGNUM); /* %eflags */ | |
7105 | set_gdbarch_fp0_regnum (gdbarch, I386_ST0_REGNUM); /* %st(0) */ | |
7106 | ||
7107 | /* NOTE: kettenis/20040418: GCC does have two possible register | |
7108 | numbering schemes on the i386: dbx and SVR4. These schemes | |
7109 | differ in how they number %ebp, %esp, %eflags, and the | |
7110 | floating-point registers, and are implemented by the arrays | |
7111 | dbx_register_map[] and svr4_dbx_register_map in | |
7112 | gcc/config/i386.c. GCC also defines a third numbering scheme in | |
7113 | gcc/config/i386.c, which it designates as the "default" register | |
7114 | map used in 64bit mode. This last register numbering scheme is | |
7115 | implemented in dbx64_register_map, and is used for AMD64; see | |
7116 | amd64-tdep.c. | |
7117 | ||
7118 | Currently, each GCC i386 target always uses the same register | |
7119 | numbering scheme across all its supported debugging formats | |
7120 | i.e. SDB (COFF), stabs and DWARF 2. This is because | |
7121 | gcc/sdbout.c, gcc/dbxout.c and gcc/dwarf2out.c all use the | |
7122 | DBX_REGISTER_NUMBER macro which is defined by each target's | |
7123 | respective config header in a manner independent of the requested | |
7124 | output debugging format. | |
7125 | ||
7126 | This does not match the arrangement below, which presumes that | |
7127 | the SDB and stabs numbering schemes differ from the DWARF and | |
7128 | DWARF 2 ones. The reason for this arrangement is that it is | |
7129 | likely to get the numbering scheme for the target's | |
7130 | default/native debug format right. For targets where GCC is the | |
7131 | native compiler (FreeBSD, NetBSD, OpenBSD, GNU/Linux) or for | |
7132 | targets where the native toolchain uses a different numbering | |
7133 | scheme for a particular debug format (stabs-in-ELF on Solaris) | |
7134 | the defaults below will have to be overridden, like | |
7135 | i386_elf_init_abi() does. */ | |
7136 | ||
7137 | /* Use the dbx register numbering scheme for stabs and COFF. */ | |
7138 | set_gdbarch_stab_reg_to_regnum (gdbarch, i386_dbx_reg_to_regnum); | |
7139 | set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_dbx_reg_to_regnum); | |
7140 | ||
7141 | /* Use the SVR4 register numbering scheme for DWARF 2. */ | |
7142 | set_gdbarch_dwarf2_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); | |
7143 | ||
7144 | /* We don't set gdbarch_stab_reg_to_regnum, since ECOFF doesn't seem to | |
7145 | be in use on any of the supported i386 targets. */ | |
7146 | ||
7147 | set_gdbarch_print_float_info (gdbarch, i387_print_float_info); | |
7148 | ||
7149 | set_gdbarch_get_longjmp_target (gdbarch, i386_get_longjmp_target); | |
7150 | ||
7151 | /* Call dummy code. */ | |
7152 | set_gdbarch_push_dummy_call (gdbarch, i386_push_dummy_call); | |
7153 | ||
7154 | set_gdbarch_convert_register_p (gdbarch, i386_convert_register_p); | |
7155 | set_gdbarch_register_to_value (gdbarch, i386_register_to_value); | |
7156 | set_gdbarch_value_to_register (gdbarch, i386_value_to_register); | |
7157 | ||
7158 | set_gdbarch_return_value (gdbarch, i386_return_value); | |
7159 | ||
7160 | set_gdbarch_skip_prologue (gdbarch, i386_skip_prologue); | |
7161 | ||
7162 | /* Stack grows downward. */ | |
7163 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
7164 | ||
7165 | set_gdbarch_breakpoint_from_pc (gdbarch, i386_breakpoint_from_pc); | |
7166 | set_gdbarch_decr_pc_after_break (gdbarch, 1); | |
7167 | set_gdbarch_max_insn_length (gdbarch, I386_MAX_INSN_LEN); | |
7168 | ||
7169 | set_gdbarch_frame_args_skip (gdbarch, 8); | |
7170 | ||
7ad10968 HZ |
7171 | set_gdbarch_print_insn (gdbarch, i386_print_insn); |
7172 | ||
7173 | set_gdbarch_dummy_id (gdbarch, i386_dummy_id); | |
7174 | ||
7175 | set_gdbarch_unwind_pc (gdbarch, i386_unwind_pc); | |
7176 | ||
7177 | /* Add the i386 register groups. */ | |
7178 | i386_add_reggroups (gdbarch); | |
90884b2b | 7179 | tdep->register_reggroup_p = i386_register_reggroup_p; |
38c968cf | 7180 | |
143985b7 AF |
7181 | /* Helper for function argument information. */ |
7182 | set_gdbarch_fetch_pointer_argument (gdbarch, i386_fetch_pointer_argument); | |
7183 | ||
06da04c6 MS |
7184 | /* Hook the function epilogue frame unwinder. This unwinder is |
7185 | appended to the list first, so that it supercedes the Dwarf | |
7186 | unwinder in function epilogues (where the Dwarf unwinder | |
7187 | currently fails). */ | |
7188 | frame_unwind_append_unwinder (gdbarch, &i386_epilogue_frame_unwind); | |
7189 | ||
7190 | /* Hook in the DWARF CFI frame unwinder. This unwinder is appended | |
7191 | to the list before the prologue-based unwinders, so that Dwarf | |
7192 | CFI info will be used if it is available. */ | |
10458914 | 7193 | dwarf2_append_unwinders (gdbarch); |
6405b0a6 | 7194 | |
acd5c798 | 7195 | frame_base_set_default (gdbarch, &i386_frame_base); |
6c0e89ed | 7196 | |
1ba53b71 | 7197 | /* Pseudo registers may be changed by amd64_init_abi. */ |
90884b2b L |
7198 | set_gdbarch_pseudo_register_read (gdbarch, i386_pseudo_register_read); |
7199 | set_gdbarch_pseudo_register_write (gdbarch, i386_pseudo_register_write); | |
7200 | ||
7201 | set_tdesc_pseudo_register_type (gdbarch, i386_pseudo_register_type); | |
7202 | set_tdesc_pseudo_register_name (gdbarch, i386_pseudo_register_name); | |
7203 | ||
c131fcee L |
7204 | /* Override the normal target description method to make the AVX |
7205 | upper halves anonymous. */ | |
7206 | set_gdbarch_register_name (gdbarch, i386_register_name); | |
7207 | ||
7208 | /* Even though the default ABI only includes general-purpose registers, | |
7209 | floating-point registers and the SSE registers, we have to leave a | |
7210 | gap for the upper AVX registers. */ | |
7211 | set_gdbarch_num_regs (gdbarch, I386_AVX_NUM_REGS); | |
90884b2b L |
7212 | |
7213 | /* Get the x86 target description from INFO. */ | |
7214 | tdesc = info.target_desc; | |
7215 | if (! tdesc_has_registers (tdesc)) | |
7216 | tdesc = tdesc_i386; | |
7217 | tdep->tdesc = tdesc; | |
7218 | ||
7219 | tdep->num_core_regs = I386_NUM_GREGS + I387_NUM_REGS; | |
7220 | tdep->register_names = i386_register_names; | |
7221 | ||
c131fcee L |
7222 | /* No upper YMM registers. */ |
7223 | tdep->ymmh_register_names = NULL; | |
7224 | tdep->ymm0h_regnum = -1; | |
7225 | ||
1ba53b71 L |
7226 | tdep->num_byte_regs = 8; |
7227 | tdep->num_word_regs = 8; | |
7228 | tdep->num_dword_regs = 0; | |
7229 | tdep->num_mmx_regs = 8; | |
c131fcee | 7230 | tdep->num_ymm_regs = 0; |
1ba53b71 | 7231 | |
90884b2b L |
7232 | tdesc_data = tdesc_data_alloc (); |
7233 | ||
dde08ee1 PA |
7234 | set_gdbarch_relocate_instruction (gdbarch, i386_relocate_instruction); |
7235 | ||
3ce1502b | 7236 | /* Hook in ABI-specific overrides, if they have been registered. */ |
90884b2b | 7237 | info.tdep_info = (void *) tdesc_data; |
4be87837 | 7238 | gdbarch_init_osabi (info, gdbarch); |
3ce1502b | 7239 | |
c131fcee L |
7240 | if (!i386_validate_tdesc_p (tdep, tdesc_data)) |
7241 | { | |
7242 | tdesc_data_cleanup (tdesc_data); | |
7243 | xfree (tdep); | |
7244 | gdbarch_free (gdbarch); | |
7245 | return NULL; | |
7246 | } | |
7247 | ||
1ba53b71 L |
7248 | /* Wire in pseudo registers. Number of pseudo registers may be |
7249 | changed. */ | |
7250 | set_gdbarch_num_pseudo_regs (gdbarch, (tdep->num_byte_regs | |
7251 | + tdep->num_word_regs | |
7252 | + tdep->num_dword_regs | |
c131fcee L |
7253 | + tdep->num_mmx_regs |
7254 | + tdep->num_ymm_regs)); | |
1ba53b71 | 7255 | |
90884b2b L |
7256 | /* Target description may be changed. */ |
7257 | tdesc = tdep->tdesc; | |
7258 | ||
90884b2b L |
7259 | tdesc_use_registers (gdbarch, tdesc, tdesc_data); |
7260 | ||
7261 | /* Override gdbarch_register_reggroup_p set in tdesc_use_registers. */ | |
7262 | set_gdbarch_register_reggroup_p (gdbarch, tdep->register_reggroup_p); | |
7263 | ||
1ba53b71 L |
7264 | /* Make %al the first pseudo-register. */ |
7265 | tdep->al_regnum = gdbarch_num_regs (gdbarch); | |
7266 | tdep->ax_regnum = tdep->al_regnum + tdep->num_byte_regs; | |
7267 | ||
c131fcee | 7268 | ymm0_regnum = tdep->ax_regnum + tdep->num_word_regs; |
1ba53b71 L |
7269 | if (tdep->num_dword_regs) |
7270 | { | |
1c6272a6 | 7271 | /* Support dword pseudo-register if it hasn't been disabled. */ |
c131fcee L |
7272 | tdep->eax_regnum = ymm0_regnum; |
7273 | ymm0_regnum += tdep->num_dword_regs; | |
1ba53b71 L |
7274 | } |
7275 | else | |
7276 | tdep->eax_regnum = -1; | |
7277 | ||
c131fcee L |
7278 | mm0_regnum = ymm0_regnum; |
7279 | if (tdep->num_ymm_regs) | |
7280 | { | |
1c6272a6 | 7281 | /* Support YMM pseudo-register if it is available. */ |
c131fcee L |
7282 | tdep->ymm0_regnum = ymm0_regnum; |
7283 | mm0_regnum += tdep->num_ymm_regs; | |
7284 | } | |
7285 | else | |
7286 | tdep->ymm0_regnum = -1; | |
7287 | ||
1ba53b71 L |
7288 | if (tdep->num_mmx_regs != 0) |
7289 | { | |
1c6272a6 | 7290 | /* Support MMX pseudo-register if MMX hasn't been disabled. */ |
1ba53b71 L |
7291 | tdep->mm0_regnum = mm0_regnum; |
7292 | } | |
7293 | else | |
7294 | tdep->mm0_regnum = -1; | |
7295 | ||
06da04c6 | 7296 | /* Hook in the legacy prologue-based unwinders last (fallback). */ |
10458914 DJ |
7297 | frame_unwind_append_unwinder (gdbarch, &i386_sigtramp_frame_unwind); |
7298 | frame_unwind_append_unwinder (gdbarch, &i386_frame_unwind); | |
acd5c798 | 7299 | |
8446b36a MK |
7300 | /* If we have a register mapping, enable the generic core file |
7301 | support, unless it has already been enabled. */ | |
7302 | if (tdep->gregset_reg_offset | |
7303 | && !gdbarch_regset_from_core_section_p (gdbarch)) | |
7304 | set_gdbarch_regset_from_core_section (gdbarch, | |
7305 | i386_regset_from_core_section); | |
7306 | ||
514f746b AR |
7307 | set_gdbarch_skip_permanent_breakpoint (gdbarch, |
7308 | i386_skip_permanent_breakpoint); | |
7309 | ||
7a697b8d SS |
7310 | set_gdbarch_fast_tracepoint_valid_at (gdbarch, |
7311 | i386_fast_tracepoint_valid_at); | |
7312 | ||
a62cc96e AC |
7313 | return gdbarch; |
7314 | } | |
7315 | ||
8201327c MK |
7316 | static enum gdb_osabi |
7317 | i386_coff_osabi_sniffer (bfd *abfd) | |
7318 | { | |
762c5349 MK |
7319 | if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0 |
7320 | || strcmp (bfd_get_target (abfd), "coff-go32") == 0) | |
8201327c MK |
7321 | return GDB_OSABI_GO32; |
7322 | ||
7323 | return GDB_OSABI_UNKNOWN; | |
7324 | } | |
8201327c MK |
7325 | \f |
7326 | ||
28e9e0f0 MK |
7327 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
7328 | void _initialize_i386_tdep (void); | |
7329 | ||
c906108c | 7330 | void |
fba45db2 | 7331 | _initialize_i386_tdep (void) |
c906108c | 7332 | { |
a62cc96e AC |
7333 | register_gdbarch_init (bfd_arch_i386, i386_gdbarch_init); |
7334 | ||
fc338970 | 7335 | /* Add the variable that controls the disassembly flavor. */ |
7ab04401 AC |
7336 | add_setshow_enum_cmd ("disassembly-flavor", no_class, valid_flavors, |
7337 | &disassembly_flavor, _("\ | |
7338 | Set the disassembly flavor."), _("\ | |
7339 | Show the disassembly flavor."), _("\ | |
7340 | The valid values are \"att\" and \"intel\", and the default value is \"att\"."), | |
7341 | NULL, | |
7342 | NULL, /* FIXME: i18n: */ | |
7343 | &setlist, &showlist); | |
8201327c MK |
7344 | |
7345 | /* Add the variable that controls the convention for returning | |
7346 | structs. */ | |
7ab04401 AC |
7347 | add_setshow_enum_cmd ("struct-convention", no_class, valid_conventions, |
7348 | &struct_convention, _("\ | |
7349 | Set the convention for returning small structs."), _("\ | |
7350 | Show the convention for returning small structs."), _("\ | |
7351 | Valid values are \"default\", \"pcc\" and \"reg\", and the default value\n\ | |
7352 | is \"default\"."), | |
7353 | NULL, | |
7354 | NULL, /* FIXME: i18n: */ | |
7355 | &setlist, &showlist); | |
8201327c MK |
7356 | |
7357 | gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour, | |
7358 | i386_coff_osabi_sniffer); | |
8201327c | 7359 | |
05816f70 | 7360 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SVR4, |
8201327c | 7361 | i386_svr4_init_abi); |
05816f70 | 7362 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32, |
8201327c | 7363 | i386_go32_init_abi); |
38c968cf | 7364 | |
209bd28e | 7365 | /* Initialize the i386-specific register groups. */ |
38c968cf | 7366 | i386_init_reggroups (); |
90884b2b L |
7367 | |
7368 | /* Initialize the standard target descriptions. */ | |
7369 | initialize_tdesc_i386 (); | |
3a13a53b | 7370 | initialize_tdesc_i386_mmx (); |
c131fcee | 7371 | initialize_tdesc_i386_avx (); |
c8d5aac9 L |
7372 | |
7373 | /* Tell remote stub that we support XML target description. */ | |
7374 | register_remote_support_xml ("i386"); | |
c906108c | 7375 | } |