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msxml3/tests: Tests for IMXAttributes::clear().
[wine/multimedia.git] / dlls / dbghelp / cpu_i386.c
blobd15afddf20317b388966e1c97f224424ad7201e4
1 /*
2 * File cpu_i386.c
3 *
4 * Copyright (C) 2009-2009, Eric Pouech.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include <assert.h>
22
23 #include "ntstatus.h"
24 #define WIN32_NO_STATUS
25 #include "dbghelp_private.h"
26 #include "wine/winbase16.h"
27 #include "winternl.h"
28 #include "wine/debug.h"
29
30 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
31
32 #define STEP_FLAG 0x00000100 /* single step flag */
33 #define V86_FLAG 0x00020000
34
35 #define IS_VM86_MODE(ctx) (ctx->EFlags & V86_FLAG)
36
37 #ifdef __i386__
38 static ADDRESS_MODE get_selector_type(HANDLE hThread, const CONTEXT* ctx, WORD sel)
39 {
40 LDT_ENTRY le;
41
42 if (IS_VM86_MODE(ctx)) return AddrModeReal;
43 /* null or system selector */
44 if (!(sel & 4) || ((sel >> 3) < 17)) return AddrModeFlat;
45 if (hThread && GetThreadSelectorEntry(hThread, sel, &le))
46 return le.HighWord.Bits.Default_Big ? AddrMode1632 : AddrMode1616;
47 /* selector doesn't exist */
48 return -1;
49 }
50
51 static unsigned i386_build_addr(HANDLE hThread, const CONTEXT* ctx, ADDRESS64* addr,
52 unsigned seg, unsigned long offset)
53 {
54 addr->Mode = AddrModeFlat;
55 addr->Segment = seg;
56 addr->Offset = offset;
57 if (seg)
58 {
59 switch (addr->Mode = get_selector_type(hThread, ctx, seg))
60 {
61 case AddrModeReal:
62 case AddrMode1616:
63 addr->Offset &= 0xffff;
64 break;
65 case AddrModeFlat:
66 case AddrMode1632:
67 break;
68 default:
69 return FALSE;
70 }
71 }
72 return TRUE;
73 }
74 #endif
75
76 static unsigned i386_get_addr(HANDLE hThread, const CONTEXT* ctx,
77 enum cpu_addr ca, ADDRESS64* addr)
78 {
79 #ifdef __i386__
80 switch (ca)
81 {
82 case cpu_addr_pc: return i386_build_addr(hThread, ctx, addr, ctx->SegCs, ctx->Eip);
83 case cpu_addr_stack: return i386_build_addr(hThread, ctx, addr, ctx->SegSs, ctx->Esp);
84 case cpu_addr_frame: return i386_build_addr(hThread, ctx, addr, ctx->SegSs, ctx->Ebp);
85 }
86 #endif
87 return FALSE;
88 }
89
90 #ifdef __i386__
91 /* fetch_next_frame32()
92 *
93 * modify (at least) context.{eip, esp, ebp} using unwind information
94 * either out of debug info (dwarf, pdb), or simple stack unwind
95 */
96 static BOOL fetch_next_frame32(struct cpu_stack_walk* csw,
97 CONTEXT* context, DWORD_PTR curr_pc)
98 {
99 DWORD_PTR xframe;
100 struct pdb_cmd_pair cpair[4];
101 DWORD val32;
102
103 if (dwarf2_virtual_unwind(csw, curr_pc, context, &xframe))
104 {
105 context->Esp = xframe;
106 return TRUE;
107 }
108 cpair[0].name = "$ebp"; cpair[0].pvalue = &context->Ebp;
109 cpair[1].name = "$esp"; cpair[1].pvalue = &context->Esp;
110 cpair[2].name = "$eip"; cpair[2].pvalue = &context->Eip;
111 cpair[3].name = NULL; cpair[3].pvalue = NULL;
112
113 if (!pdb_virtual_unwind(csw, curr_pc, context, cpair))
114 {
115 /* do a simple unwind using ebp
116 * we assume a "regular" prologue in the function has been used
117 */
118 if (!context->Ebp) return FALSE;
119 context->Esp = context->Ebp + 2 * sizeof(DWORD);
120 if (!sw_read_mem(csw, context->Ebp + sizeof(DWORD), &val32, sizeof(DWORD)))
121 {
122 WARN("Cannot read new frame offset %p\n",
123 (void*)(DWORD_PTR)(context->Ebp + (int)sizeof(DWORD)));
124 return FALSE;
125 }
126 context->Eip = val32;
127 /* "pop up" previous EBP value */
128 if (!sw_read_mem(csw, context->Ebp, &val32, sizeof(DWORD)))
129 return FALSE;
130 context->Ebp = val32;
131 }
132 return TRUE;
133 }
134 #endif
135
136 enum st_mode {stm_start, stm_32bit, stm_16bit, stm_done};
137
138 /* indexes in Reserved array */
139 #define __CurrentModeCount 0
140 #define __CurrentSwitch 1
141 #define __NextSwitch 2
142
143 #define curr_mode (frame->Reserved[__CurrentModeCount] & 0x0F)
144 #define curr_count (frame->Reserved[__CurrentModeCount] >> 4)
145 #define curr_switch (frame->Reserved[__CurrentSwitch])
146 #define next_switch (frame->Reserved[__NextSwitch])
147
148 #define set_curr_mode(m) {frame->Reserved[__CurrentModeCount] &= ~0x0F; frame->Reserved[__CurrentModeCount] |= (m & 0x0F);}
149 #define inc_curr_count() (frame->Reserved[__CurrentModeCount] += 0x10)
150
151 static BOOL i386_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context)
152 {
153 STACK32FRAME frame32;
154 STACK16FRAME frame16;
155 char ch;
156 ADDRESS64 tmp;
157 DWORD p;
158 WORD val16;
159 DWORD val32;
160 BOOL do_switch;
161 #ifdef __i386__
162 unsigned deltapc;
163 CONTEXT _context;
164 #endif
165
166 /* sanity check */
167 if (curr_mode >= stm_done) return FALSE;
168
169 TRACE("Enter: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s cSwitch=%p nSwitch=%p\n",
170 wine_dbgstr_addr(&frame->AddrPC),
171 wine_dbgstr_addr(&frame->AddrFrame),
172 wine_dbgstr_addr(&frame->AddrReturn),
173 wine_dbgstr_addr(&frame->AddrStack),
174 curr_mode == stm_start ? "start" : (curr_mode == stm_16bit ? "16bit" : "32bit"),
175 wine_dbgstr_longlong(curr_count),
176 (void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)next_switch);
177
178 #ifdef __i386__
179 /* if we're at first call (which doesn't actually unwind, it just computes ReturnPC,
180 * or if we're doing the first real unwind (count == 1), then we can directly use
181 * eip. otherwise, eip is *after* the insn that actually made the call to
182 * previous frame, so decrease eip by delta pc (1!) so that we're inside previous
183 * insn.
184 * Doing so, we ensure that the pc used for unwinding is always inside the function
185 * we want to use for next frame
186 */
187 deltapc = curr_count <= 1 ? 0 : 1;
188
189 if (!context)
190 {
191 /* setup a pseudo context for the rest of the code (esp. unwinding) */
192 context = &_context;
193 memset(context, 0, sizeof(*context));
194 context->ContextFlags = CONTEXT_CONTROL | CONTEXT_SEGMENTS;
195 if (frame->AddrPC.Mode != AddrModeFlat) context->SegCs = frame->AddrPC.Segment;
196 context->Eip = frame->AddrPC.Offset;
197 if (frame->AddrFrame.Mode != AddrModeFlat) context->SegSs = frame->AddrFrame.Segment;
198 context->Ebp = frame->AddrFrame.Offset;
199 if (frame->AddrStack.Mode != AddrModeFlat) context->SegSs = frame->AddrStack.Segment;
200 context->Esp = frame->AddrStack.Offset;
201 }
202 #endif
203 if (curr_mode == stm_start)
204 {
205 THREAD_BASIC_INFORMATION info;
206
207 if ((frame->AddrPC.Mode == AddrModeFlat) &&
208 (frame->AddrFrame.Mode != AddrModeFlat))
209 {
210 WARN("Bad AddrPC.Mode / AddrFrame.Mode combination\n");
211 goto done_err;
212 }
213
214 /* Init done */
215 set_curr_mode((frame->AddrPC.Mode == AddrModeFlat) ? stm_32bit : stm_16bit);
216
217 /* cur_switch holds address of WOW32Reserved field in TEB in debuggee
218 * address space
219 */
220 if (NtQueryInformationThread(csw->hThread, ThreadBasicInformation, &info,
221 sizeof(info), NULL) == STATUS_SUCCESS)
222 {
223 curr_switch = (DWORD_PTR)info.TebBaseAddress + FIELD_OFFSET(TEB, WOW32Reserved);
224 if (!sw_read_mem(csw, curr_switch, &p, sizeof(p)))
225 {
226 WARN("Can't read TEB:WOW32Reserved\n");
227 goto done_err;
228 }
229 next_switch = p;
230 if (!next_switch) /* no 16-bit stack */
231 {
232 curr_switch = 0;
233 }
234 else if (curr_mode == stm_16bit)
235 {
236 if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
237 {
238 WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
239 goto done_err;
240 }
241 curr_switch = (DWORD)frame32.frame16;
242 tmp.Mode = AddrMode1616;
243 tmp.Segment = SELECTOROF(curr_switch);
244 tmp.Offset = OFFSETOF(curr_switch);
245 if (!sw_read_mem(csw, sw_xlat_addr(csw, &tmp), &ch, sizeof(ch)))
246 curr_switch = 0xFFFFFFFF;
247 }
248 else
249 {
250 tmp.Mode = AddrMode1616;
251 tmp.Segment = SELECTOROF(next_switch);
252 tmp.Offset = OFFSETOF(next_switch);
253 p = sw_xlat_addr(csw, &tmp);
254 if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
255 {
256 WARN("Bad stack frame 0x%08x\n", p);
257 goto done_err;
258 }
259 curr_switch = (DWORD_PTR)frame16.frame32;
260 if (!sw_read_mem(csw, curr_switch, &ch, sizeof(ch)))
261 curr_switch = 0xFFFFFFFF;
262 }
263 }
264 else
265 /* FIXME: this will allow to work when we're not attached to a live target,
266 * but the 16 <=> 32 switch facility won't be available.
267 */
268 curr_switch = 0;
269 frame->AddrReturn.Mode = frame->AddrStack.Mode = (curr_mode == stm_16bit) ? AddrMode1616 : AddrModeFlat;
270 /* don't set up AddrStack on first call. Either the caller has set it up, or
271 * we will get it in the next frame
272 */
273 memset(&frame->AddrBStore, 0, sizeof(frame->AddrBStore));
274 }
275 else
276 {
277 if (frame->AddrFrame.Mode == AddrModeFlat)
278 {
279 assert(curr_mode == stm_32bit);
280 do_switch = curr_switch && frame->AddrFrame.Offset >= curr_switch;
281 }
282 else
283 {
284 assert(curr_mode == stm_16bit);
285 do_switch = curr_switch &&
286 frame->AddrFrame.Segment == SELECTOROF(curr_switch) &&
287 frame->AddrFrame.Offset >= OFFSETOF(curr_switch);
288 }
289
290 if (do_switch)
291 {
292 if (curr_mode == stm_16bit)
293 {
294 if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
295 {
296 WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
297 goto done_err;
298 }
299
300 frame->AddrPC.Mode = AddrModeFlat;
301 frame->AddrPC.Segment = 0;
302 frame->AddrPC.Offset = frame32.retaddr;
303 frame->AddrFrame.Mode = AddrModeFlat;
304 frame->AddrFrame.Segment = 0;
305 frame->AddrFrame.Offset = frame32.ebp;
306
307 frame->AddrStack.Mode = AddrModeFlat;
308 frame->AddrStack.Segment = 0;
309 frame->AddrReturn.Mode = AddrModeFlat;
310 frame->AddrReturn.Segment = 0;
311
312 next_switch = curr_switch;
313 tmp.Mode = AddrMode1616;
314 tmp.Segment = SELECTOROF(next_switch);
315 tmp.Offset = OFFSETOF(next_switch);
316 p = sw_xlat_addr(csw, &tmp);
317
318 if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
319 {
320 WARN("Bad stack frame 0x%08x\n", p);
321 goto done_err;
322 }
323 curr_switch = (DWORD_PTR)frame16.frame32;
324 set_curr_mode(stm_32bit);
325 if (!sw_read_mem(csw, curr_switch, &ch, sizeof(ch)))
326 curr_switch = 0;
327 }
328 else
329 {
330 tmp.Mode = AddrMode1616;
331 tmp.Segment = SELECTOROF(next_switch);
332 tmp.Offset = OFFSETOF(next_switch);
333 p = sw_xlat_addr(csw, &tmp);
334
335 if (!sw_read_mem(csw, p, &frame16, sizeof(frame16)))
336 {
337 WARN("Bad stack frame 0x%08x\n", p);
338 goto done_err;
339 }
340
341 TRACE("Got a 16 bit stack switch:"
342 "\n\tframe32: %p"
343 "\n\tedx:%08x ecx:%08x ebp:%08x"
344 "\n\tds:%04x es:%04x fs:%04x gs:%04x"
345 "\n\tcall_from_ip:%08x module_cs:%04x relay=%08x"
346 "\n\tentry_ip:%04x entry_point:%08x"
347 "\n\tbp:%04x ip:%04x cs:%04x\n",
348 frame16.frame32,
349 frame16.edx, frame16.ecx, frame16.ebp,
350 frame16.ds, frame16.es, frame16.fs, frame16.gs,
351 frame16.callfrom_ip, frame16.module_cs, frame16.relay,
352 frame16.entry_ip, frame16.entry_point,
353 frame16.bp, frame16.ip, frame16.cs);
354
355 frame->AddrPC.Mode = AddrMode1616;
356 frame->AddrPC.Segment = frame16.cs;
357 frame->AddrPC.Offset = frame16.ip;
358
359 frame->AddrFrame.Mode = AddrMode1616;
360 frame->AddrFrame.Segment = SELECTOROF(next_switch);
361 frame->AddrFrame.Offset = frame16.bp;
362
363 frame->AddrStack.Mode = AddrMode1616;
364 frame->AddrStack.Segment = SELECTOROF(next_switch);
365
366 frame->AddrReturn.Mode = AddrMode1616;
367 frame->AddrReturn.Segment = frame16.cs;
368
369 next_switch = curr_switch;
370 if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
371 {
372 WARN("Bad stack frame %p\n", (void*)(DWORD_PTR)next_switch);
373 goto done_err;
374 }
375 curr_switch = (DWORD)frame32.frame16;
376 tmp.Mode = AddrMode1616;
377 tmp.Segment = SELECTOROF(curr_switch);
378 tmp.Offset = OFFSETOF(curr_switch);
379
380 if (!sw_read_mem(csw, sw_xlat_addr(csw, &tmp), &ch, sizeof(ch)))
381 curr_switch = 0;
382 set_curr_mode(stm_16bit);
383 }
384 }
385 else
386 {
387 if (curr_mode == stm_16bit)
388 {
389 frame->AddrPC = frame->AddrReturn;
390 frame->AddrStack.Offset = frame->AddrFrame.Offset + 2 * sizeof(WORD);
391 /* "pop up" previous BP value */
392 if (!frame->AddrFrame.Offset ||
393 !sw_read_mem(csw, sw_xlat_addr(csw, &frame->AddrFrame),
394 &val16, sizeof(WORD)))
395 goto done_err;
396 frame->AddrFrame.Offset = val16;
397 }
398 else
399 {
400 #ifdef __i386__
401 if (!fetch_next_frame32(csw, context, sw_xlat_addr(csw, &frame->AddrPC) - deltapc))
402 goto done_err;
403
404 frame->AddrStack.Mode = frame->AddrFrame.Mode = frame->AddrPC.Mode = AddrModeFlat;
405 frame->AddrStack.Offset = context->Esp;
406 frame->AddrFrame.Offset = context->Ebp;
407 if (frame->AddrReturn.Offset != context->Eip)
408 FIXME("new PC=%s different from Eip=%x\n",
409 wine_dbgstr_longlong(frame->AddrReturn.Offset), context->Eip);
410 frame->AddrPC.Offset = context->Eip;
411 #endif
412 }
413 }
414 }
415
416 if (curr_mode == stm_16bit)
417 {
418 unsigned int i;
419
420 p = sw_xlat_addr(csw, &frame->AddrFrame);
421 if (!sw_read_mem(csw, p + sizeof(WORD), &val16, sizeof(WORD)))
422 goto done_err;
423 frame->AddrReturn.Offset = val16;
424 /* get potential cs if a far call was used */
425 if (!sw_read_mem(csw, p + 2 * sizeof(WORD), &val16, sizeof(WORD)))
426 goto done_err;
427 if (frame->AddrFrame.Offset & 1)
428 frame->AddrReturn.Segment = val16; /* far call assumed */
429 else
430 {
431 /* not explicitly marked as far call,
432 * but check whether it could be anyway
433 */
434 if ((val16 & 7) == 7 && val16 != frame->AddrReturn.Segment)
435 {
436 LDT_ENTRY le;
437
438 if (GetThreadSelectorEntry(csw->hThread, val16, &le) &&
439 (le.HighWord.Bits.Type & 0x08)) /* code segment */
440 {
441 /* it is very uncommon to push a code segment cs as
442 * a parameter, so this should work in most cases
443 */
444 frame->AddrReturn.Segment = val16;
445 }
446 }
447 }
448 frame->AddrFrame.Offset &= ~1;
449 /* we "pop" parameters as 16 bit entities... of course, this won't
450 * work if the parameter is in fact bigger than 16bit, but
451 * there's no way to know that here
452 */
453 for (i = 0; i < sizeof(frame->Params) / sizeof(frame->Params[0]); i++)
454 {
455 sw_read_mem(csw, p + (2 + i) * sizeof(WORD), &val16, sizeof(val16));
456 frame->Params[i] = val16;
457 }
458 #ifdef __i386__
459 if (context)
460 {
461 #define SET(field, seg, reg) \
462 switch (frame->field.Mode) \
463 { \
464 case AddrModeFlat: context->reg = frame->field.Offset; break; \
465 case AddrMode1616: context->seg = frame->field.Segment; context->reg = frame->field.Offset; break; \
466 default: assert(0); \
467 }
468 SET(AddrStack, SegSs, Esp);
469 SET(AddrFrame, SegSs, Ebp);
470 SET(AddrReturn, SegCs, Eip);
471 #undef SET
472 }
473 #endif
474 }
475 else
476 {
477 unsigned int i;
478 #ifdef __i386__
479 CONTEXT newctx = *context;
480
481 if (!fetch_next_frame32(csw, &newctx, frame->AddrPC.Offset - deltapc))
482 goto done_err;
483 frame->AddrReturn.Mode = AddrModeFlat;
484 frame->AddrReturn.Offset = newctx.Eip;
485 #endif
486 for (i = 0; i < sizeof(frame->Params) / sizeof(frame->Params[0]); i++)
487 {
488 sw_read_mem(csw, frame->AddrFrame.Offset + (2 + i) * sizeof(DWORD), &val32, sizeof(val32));
489 frame->Params[i] = val32;
490 }
491 }
492
493 frame->Far = TRUE;
494 frame->Virtual = TRUE;
495 p = sw_xlat_addr(csw, &frame->AddrPC);
496 if (p && sw_module_base(csw, p))
497 frame->FuncTableEntry = sw_table_access(csw, p);
498 else
499 frame->FuncTableEntry = NULL;
500
501 inc_curr_count();
502 TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s cSwitch=%p nSwitch=%p FuncTable=%p\n",
503 wine_dbgstr_addr(&frame->AddrPC),
504 wine_dbgstr_addr(&frame->AddrFrame),
505 wine_dbgstr_addr(&frame->AddrReturn),
506 wine_dbgstr_addr(&frame->AddrStack),
507 curr_mode == stm_start ? "start" : (curr_mode == stm_16bit ? "16bit" : "32bit"),
508 wine_dbgstr_longlong(curr_count),
509 (void*)(DWORD_PTR)curr_switch, (void*)(DWORD_PTR)next_switch, frame->FuncTableEntry);
510
511 return TRUE;
512 done_err:
513 set_curr_mode(stm_done);
514 return FALSE;
515 }
516
517 static unsigned i386_map_dwarf_register(unsigned regno)
518 {
519 unsigned reg;
520
521 switch (regno)
522 {
523 case 0: reg = CV_REG_EAX; break;
524 case 1: reg = CV_REG_ECX; break;
525 case 2: reg = CV_REG_EDX; break;
526 case 3: reg = CV_REG_EBX; break;
527 case 4: reg = CV_REG_ESP; break;
528 case 5: reg = CV_REG_EBP; break;
529 case 6: reg = CV_REG_ESI; break;
530 case 7: reg = CV_REG_EDI; break;
531 case 8: reg = CV_REG_EIP; break;
532 case 9: reg = CV_REG_EFLAGS; break;
533 case 10: reg = CV_REG_CS; break;
534 case 11: reg = CV_REG_SS; break;
535 case 12: reg = CV_REG_DS; break;
536 case 13: reg = CV_REG_ES; break;
537 case 14: reg = CV_REG_FS; break;
538 case 15: reg = CV_REG_GS; break;
539 case 16: case 17: case 18: case 19:
540 case 20: case 21: case 22: case 23:
541 reg = CV_REG_ST0 + regno - 16; break;
542 case 24: reg = CV_REG_CTRL; break;
543 case 25: reg = CV_REG_STAT; break;
544 case 26: reg = CV_REG_TAG; break;
545 case 27: reg = CV_REG_FPCS; break;
546 case 28: reg = CV_REG_FPIP; break;
547 case 29: reg = CV_REG_FPDS; break;
548 case 30: reg = CV_REG_FPDO; break;
549 /*
550 reg: fop 31
551 */
552 case 32: case 33: case 34: case 35:
553 case 36: case 37: case 38: case 39:
554 reg = CV_REG_XMM0 + regno - 32; break;
555 case 40: reg = CV_REG_MXCSR; break;
556 default:
557 FIXME("Don't know how to map register %d\n", regno);
558 return 0;
559 }
560 return reg;
561 }
562
563 static void* i386_fetch_context_reg(CONTEXT* ctx, unsigned regno, unsigned* size)
564 {
565 #ifdef __i386__
566 switch (regno)
567 {
568 case CV_REG_EAX: *size = sizeof(ctx->Eax); return &ctx->Eax;
569 case CV_REG_EDX: *size = sizeof(ctx->Edx); return &ctx->Edx;
570 case CV_REG_ECX: *size = sizeof(ctx->Ecx); return &ctx->Ecx;
571 case CV_REG_EBX: *size = sizeof(ctx->Ebx); return &ctx->Ebx;
572 case CV_REG_ESI: *size = sizeof(ctx->Esi); return &ctx->Esi;
573 case CV_REG_EDI: *size = sizeof(ctx->Edi); return &ctx->Edi;
574 case CV_REG_EBP: *size = sizeof(ctx->Ebp); return &ctx->Ebp;
575 case CV_REG_ESP: *size = sizeof(ctx->Esp); return &ctx->Esp;
576 case CV_REG_EIP: *size = sizeof(ctx->Eip); return &ctx->Eip;
577
578 case CV_REG_ST0 + 0: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[0*sizeof(long double)];
579 case CV_REG_ST0 + 1: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[1*sizeof(long double)];
580 case CV_REG_ST0 + 2: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[2*sizeof(long double)];
581 case CV_REG_ST0 + 3: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[3*sizeof(long double)];
582 case CV_REG_ST0 + 4: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[4*sizeof(long double)];
583 case CV_REG_ST0 + 5: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[5*sizeof(long double)];
584 case CV_REG_ST0 + 6: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[6*sizeof(long double)];
585 case CV_REG_ST0 + 7: *size = sizeof(long double); return &ctx->FloatSave.RegisterArea[7*sizeof(long double)];
586
587 case CV_REG_CTRL: *size = sizeof(DWORD); return &ctx->FloatSave.ControlWord;
588 case CV_REG_STAT: *size = sizeof(DWORD); return &ctx->FloatSave.StatusWord;
589 case CV_REG_TAG: *size = sizeof(DWORD); return &ctx->FloatSave.TagWord;
590 case CV_REG_FPCS: *size = sizeof(DWORD); return &ctx->FloatSave.ErrorSelector;
591 case CV_REG_FPIP: *size = sizeof(DWORD); return &ctx->FloatSave.ErrorOffset;
592 case CV_REG_FPDS: *size = sizeof(DWORD); return &ctx->FloatSave.DataSelector;
593 case CV_REG_FPDO: *size = sizeof(DWORD); return &ctx->FloatSave.DataOffset;
594
595 case CV_REG_EFLAGS: *size = sizeof(ctx->EFlags); return &ctx->EFlags;
596 case CV_REG_ES: *size = sizeof(ctx->SegEs); return &ctx->SegEs;
597 case CV_REG_CS: *size = sizeof(ctx->SegCs); return &ctx->SegCs;
598 case CV_REG_SS: *size = sizeof(ctx->SegSs); return &ctx->SegSs;
599 case CV_REG_DS: *size = sizeof(ctx->SegDs); return &ctx->SegDs;
600 case CV_REG_FS: *size = sizeof(ctx->SegFs); return &ctx->SegFs;
601 case CV_REG_GS: *size = sizeof(ctx->SegGs); return &ctx->SegGs;
602
603 }
604 #endif
605 FIXME("Unknown register %x\n", regno);
606 return NULL;
607 }
608
609 static const char* i386_fetch_regname(unsigned regno)
610 {
611 switch (regno)
612 {
613 case CV_REG_EAX: return "eax";
614 case CV_REG_EDX: return "edx";
615 case CV_REG_ECX: return "ecx";
616 case CV_REG_EBX: return "ebx";
617 case CV_REG_ESI: return "esi";
618 case CV_REG_EDI: return "edi";
619 case CV_REG_EBP: return "ebp";
620 case CV_REG_ESP: return "esp";
621 case CV_REG_EIP: return "eip";
622
623 case CV_REG_ST0 + 0: return "st0";
624 case CV_REG_ST0 + 1: return "st1";
625 case CV_REG_ST0 + 2: return "st2";
626 case CV_REG_ST0 + 3: return "st3";
627 case CV_REG_ST0 + 4: return "st4";
628 case CV_REG_ST0 + 5: return "st5";
629 case CV_REG_ST0 + 6: return "st6";
630 case CV_REG_ST0 + 7: return "st7";
631
632 case CV_REG_EFLAGS: return "eflags";
633 case CV_REG_ES: return "es";
634 case CV_REG_CS: return "cs";
635 case CV_REG_SS: return "ss";
636 case CV_REG_DS: return "ds";
637 case CV_REG_FS: return "fs";
638 case CV_REG_GS: return "gs";
639
640 case CV_REG_CTRL: return "fpControl";
641 case CV_REG_STAT: return "fpStatus";
642 case CV_REG_TAG: return "fpTag";
643 case CV_REG_FPCS: return "fpCS";
644 case CV_REG_FPIP: return "fpIP";
645 case CV_REG_FPDS: return "fpDS";
646 case CV_REG_FPDO: return "fpData";
647
648 case CV_REG_XMM0 + 0: return "xmm0";
649 case CV_REG_XMM0 + 1: return "xmm1";
650 case CV_REG_XMM0 + 2: return "xmm2";
651 case CV_REG_XMM0 + 3: return "xmm3";
652 case CV_REG_XMM0 + 4: return "xmm4";
653 case CV_REG_XMM0 + 5: return "xmm5";
654 case CV_REG_XMM0 + 6: return "xmm6";
655 case CV_REG_XMM0 + 7: return "xmm7";
656
657 case CV_REG_MXCSR: return "MxCSR";
658 }
659 FIXME("Unknown register %x\n", regno);
660 return NULL;
661 }
662
663 static BOOL i386_fetch_minidump_thread(struct dump_context* dc, unsigned index, unsigned flags, const CONTEXT* ctx)
664 {
665 if (ctx->ContextFlags && (flags & ThreadWriteInstructionWindow))
666 {
667 /* FIXME: crop values across module boundaries, */
668 #ifdef __i386__
669 ULONG base = ctx->Eip <= 0x80 ? 0 : ctx->Eip - 0x80;
670 minidump_add_memory_block(dc, base, ctx->Eip + 0x80 - base, 0);
671 #endif
672 }
673
674 return TRUE;
675 }
676
677 static BOOL i386_fetch_minidump_module(struct dump_context* dc, unsigned index, unsigned flags)
678 {
679 /* FIXME: actually, we should probably take care of FPO data, unless it's stored in
680 * function table minidump stream
681 */
682 return FALSE;
683 }
684
685 DECLSPEC_HIDDEN struct cpu cpu_i386 = {
686 IMAGE_FILE_MACHINE_I386,
687 4,
688 CV_REG_EBP,
689 i386_get_addr,
690 i386_stack_walk,
691 NULL,
692 i386_map_dwarf_register,
693 i386_fetch_context_reg,
694 i386_fetch_regname,
695 i386_fetch_minidump_thread,
696 i386_fetch_minidump_module,
697 };
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