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iphlpapi/tests: Add tests for GetBestRoute.
[wine.git] / dlls / dbghelp / cpu_x86_64.c
blob1ad9aa413958ffa48adc754aaf67afbdb1ec0828
1 /*
2 * File cpu_x86_64.c
3 *
4 * Copyright (C) 1999, 2005 Alexandre Julliard
5 * Copyright (C) 2009, 2011 Eric Pouech.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 */
21
22 #include <assert.h>
23
24 #define NONAMELESSUNION
25 #define NONAMELESSSTRUCT
26 #include "ntstatus.h"
27 #define WIN32_NO_STATUS
28 #include "dbghelp_private.h"
29 #include "winternl.h"
30 #include "wine/debug.h"
31
32 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
33
34 /* x86-64 unwind information, for PE modules, as described on MSDN */
35
36 typedef enum _UNWIND_OP_CODES
37 {
38 UWOP_PUSH_NONVOL = 0,
39 UWOP_ALLOC_LARGE,
40 UWOP_ALLOC_SMALL,
41 UWOP_SET_FPREG,
42 UWOP_SAVE_NONVOL,
43 UWOP_SAVE_NONVOL_FAR,
44 UWOP_EPILOG,
45 UWOP_SAVE_XMM128 = 8,
46 UWOP_SAVE_XMM128_FAR,
47 UWOP_PUSH_MACHFRAME
48 } UNWIND_CODE_OPS;
49
50 typedef union _UNWIND_CODE
51 {
52 struct
53 {
54 BYTE CodeOffset;
55 BYTE UnwindOp : 4;
56 BYTE OpInfo : 4;
57 } u;
58 USHORT FrameOffset;
59 } UNWIND_CODE, *PUNWIND_CODE;
60
61 typedef struct _UNWIND_INFO
62 {
63 BYTE Version : 3;
64 BYTE Flags : 5;
65 BYTE SizeOfProlog;
66 BYTE CountOfCodes;
67 BYTE FrameRegister : 4;
68 BYTE FrameOffset : 4;
69 UNWIND_CODE UnwindCode[1]; /* actually CountOfCodes (aligned) */
70 /*
71 * union
72 * {
73 * OPTIONAL ULONG ExceptionHandler;
74 * OPTIONAL ULONG FunctionEntry;
75 * };
76 * OPTIONAL ULONG ExceptionData[];
77 */
78 } UNWIND_INFO, *PUNWIND_INFO;
79
80 static BOOL x86_64_get_addr(HANDLE hThread, const CONTEXT* ctx,
81 enum cpu_addr ca, ADDRESS64* addr)
82 {
83 addr->Mode = AddrModeFlat;
84 switch (ca)
85 {
86 #ifdef __x86_64__
87 case cpu_addr_pc: addr->Segment = ctx->SegCs; addr->Offset = ctx->Rip; return TRUE;
88 case cpu_addr_stack: addr->Segment = ctx->SegSs; addr->Offset = ctx->Rsp; return TRUE;
89 case cpu_addr_frame: addr->Segment = ctx->SegSs; addr->Offset = ctx->Rbp; return TRUE;
90 #endif
91 default: addr->Mode = -1;
92 return FALSE;
93 }
94 }
95
96 #ifdef __x86_64__
97
98 enum st_mode {stm_start, stm_64bit, stm_done};
99
100 /* indexes in Reserved array */
101 #define __CurrentMode 0
102 #define __CurrentCount 1
103 /* #define __ 2 (unused) */
104
105 #define curr_mode (frame->Reserved[__CurrentMode])
106 #define curr_count (frame->Reserved[__CurrentCount])
107 /* #define ??? (frame->Reserved[__]) (unused) */
108
109 union handler_data
110 {
111 RUNTIME_FUNCTION chain;
112 ULONG handler;
113 };
114
115 static void dump_unwind_info(struct cpu_stack_walk* csw, ULONG64 base, RUNTIME_FUNCTION *function)
116 {
117 static const char * const reg_names[16] =
118 { "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
119 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" };
120
121 union handler_data handler_data;
122 char buffer[sizeof(UNWIND_INFO) + 256 * sizeof(UNWIND_CODE)];
123 UNWIND_INFO* info = (UNWIND_INFO*)buffer;
124 unsigned int i, count;
125 RUNTIME_FUNCTION snext;
126 ULONG64 addr;
127
128 TRACE("**** func %lx-%lx\n", function->BeginAddress, function->EndAddress);
129 for (;;)
130 {
131 if (function->UnwindData & 1)
132 {
133 if (!sw_read_mem(csw, base + function->UnwindData, &snext, sizeof(snext)))
134 {
135 TRACE("Couldn't unwind RUNTIME_INFO at %Ix\n", base + function->UnwindData);
136 return;
137 }
138 TRACE("unwind info for function %p-%p chained to function %p-%p\n",
139 (char*)base + function->BeginAddress, (char*)base + function->EndAddress,
140 (char*)base + snext.BeginAddress, (char*)base + snext.EndAddress);
141 function = &snext;
142 continue;
143 }
144 addr = base + function->UnwindData;
145 if (!sw_read_mem(csw, addr, info, FIELD_OFFSET(UNWIND_INFO, UnwindCode)) ||
146 !sw_read_mem(csw, addr + FIELD_OFFSET(UNWIND_INFO, UnwindCode),
147 info->UnwindCode, info->CountOfCodes * sizeof(UNWIND_CODE)))
148 {
149 FIXME("couldn't read memory for UNWIND_INFO at %Ix\n", addr);
150 return;
151 }
152 TRACE("unwind info at %p flags %x prolog 0x%x bytes function %p-%p\n",
153 (char*)addr, info->Flags, info->SizeOfProlog,
154 (char*)base + function->BeginAddress, (char*)base + function->EndAddress);
155
156 if (info->FrameRegister)
157 TRACE(" frame register %s offset 0x%x(%%rsp)\n",
158 reg_names[info->FrameRegister], info->FrameOffset * 16);
159
160 for (i = 0; i < info->CountOfCodes; i++)
161 {
162 TRACE(" 0x%x: ", info->UnwindCode[i].u.CodeOffset);
163 switch (info->UnwindCode[i].u.UnwindOp)
164 {
165 case UWOP_PUSH_NONVOL:
166 TRACE("pushq %%%s\n", reg_names[info->UnwindCode[i].u.OpInfo]);
167 break;
168 case UWOP_ALLOC_LARGE:
169 if (info->UnwindCode[i].u.OpInfo)
170 {
171 count = *(DWORD*)&info->UnwindCode[i+1];
172 i += 2;
173 }
174 else
175 {
176 count = *(USHORT*)&info->UnwindCode[i+1] * 8;
177 i++;
178 }
179 TRACE("subq $0x%x,%%rsp\n", count);
180 break;
181 case UWOP_ALLOC_SMALL:
182 count = (info->UnwindCode[i].u.OpInfo + 1) * 8;
183 TRACE("subq $0x%x,%%rsp\n", count);
184 break;
185 case UWOP_SET_FPREG:
186 TRACE("leaq 0x%x(%%rsp),%s\n",
187 info->FrameOffset * 16, reg_names[info->FrameRegister]);
188 break;
189 case UWOP_SAVE_NONVOL:
190 count = *(USHORT*)&info->UnwindCode[i+1] * 8;
191 TRACE("movq %%%s,0x%x(%%rsp)\n", reg_names[info->UnwindCode[i].u.OpInfo], count);
192 i++;
193 break;
194 case UWOP_SAVE_NONVOL_FAR:
195 count = *(DWORD*)&info->UnwindCode[i+1];
196 TRACE("movq %%%s,0x%x(%%rsp)\n", reg_names[info->UnwindCode[i].u.OpInfo], count);
197 i += 2;
198 break;
199 case UWOP_SAVE_XMM128:
200 count = *(USHORT*)&info->UnwindCode[i+1] * 16;
201 TRACE("movaps %%xmm%u,0x%x(%%rsp)\n", info->UnwindCode[i].u.OpInfo, count);
202 i++;
203 break;
204 case UWOP_SAVE_XMM128_FAR:
205 count = *(DWORD*)&info->UnwindCode[i+1];
206 TRACE("movaps %%xmm%u,0x%x(%%rsp)\n", info->UnwindCode[i].u.OpInfo, count);
207 i += 2;
208 break;
209 case UWOP_PUSH_MACHFRAME:
210 TRACE("PUSH_MACHFRAME %u\n", info->UnwindCode[i].u.OpInfo);
211 break;
212 case UWOP_EPILOG:
213 if (info->Version == 2)
214 {
215 unsigned int offset;
216 if (info->UnwindCode[i].u.OpInfo)
217 offset = info->UnwindCode[i].u.CodeOffset;
218 else
219 offset = (info->UnwindCode[i+1].u.OpInfo << 8) + info->UnwindCode[i+1].u.CodeOffset;
220 TRACE("UWOP_EPILOG %u offset %u\n", info->UnwindCode[i].u.OpInfo, offset);
221 i += 1;
222 break;
223 }
224 /* Fall through */
225 default:
226 FIXME("unknown code %u\n", info->UnwindCode[i].u.UnwindOp);
227 break;
228 }
229 }
230
231 addr += FIELD_OFFSET(UNWIND_INFO, UnwindCode) +
232 ((info->CountOfCodes + 1) & ~1) * sizeof(UNWIND_CODE);
233 if (info->Flags & UNW_FLAG_CHAININFO)
234 {
235 if (!sw_read_mem(csw, addr, &handler_data, sizeof(handler_data.chain)))
236 {
237 FIXME("couldn't read memory for handler_data.chain\n");
238 return;
239 }
240 TRACE(" chained to function %p-%p\n",
241 (char*)base + handler_data.chain.BeginAddress,
242 (char*)base + handler_data.chain.EndAddress);
243 function = &handler_data.chain;
244 continue;
245 }
246 if (info->Flags & (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER))
247 {
248 if (!sw_read_mem(csw, addr, &handler_data, sizeof(handler_data.handler)))
249 {
250 FIXME("couldn't read memory for handler_data.handler\n");
251 return;
252 }
253 TRACE(" handler %p data at %p\n",
254 (char*)base + handler_data.handler, (char*)addr + sizeof(handler_data.handler));
255 }
256 break;
257 }
258 }
259
260 /* highly derived from dlls/ntdll/signal_x86_64.c */
261 static ULONG64 get_int_reg(CONTEXT *context, int reg)
262 {
263 return *(&context->Rax + reg);
264 }
265
266 static void set_int_reg(CONTEXT *context, int reg, ULONG64 val)
267 {
268 *(&context->Rax + reg) = val;
269 }
270
271 static void set_float_reg(CONTEXT *context, int reg, M128A val)
272 {
273 *(&context->u.s.Xmm0 + reg) = val;
274 }
275
276 static int get_opcode_size(UNWIND_CODE op)
277 {
278 switch (op.u.UnwindOp)
279 {
280 case UWOP_ALLOC_LARGE:
281 return 2 + (op.u.OpInfo != 0);
282 case UWOP_SAVE_NONVOL:
283 case UWOP_SAVE_XMM128:
284 return 2;
285 case UWOP_SAVE_NONVOL_FAR:
286 case UWOP_SAVE_XMM128_FAR:
287 return 3;
288 default:
289 return 1;
290 }
291 }
292
293 static BOOL is_inside_epilog(struct cpu_stack_walk* csw, DWORD64 pc,
294 DWORD64 base, const RUNTIME_FUNCTION *function )
295 {
296 BYTE op0, op1, op2;
297 LONG val32;
298
299 if (!sw_read_mem(csw, pc, &op0, 1)) return FALSE;
300
301 /* add or lea must be the first instruction, and it must have a rex.W prefix */
302 if ((op0 & 0xf8) == 0x48)
303 {
304 if (!sw_read_mem(csw, pc + 1, &op1, 1)) return FALSE;
305 switch (op1)
306 {
307 case 0x81: /* add $nnnn,%rsp */
308 if (!sw_read_mem(csw, pc + 2, &op2, 1)) return FALSE;
309 if (op0 == 0x48 && op2 == 0xc4)
310 {
311 pc += 7;
312 break;
313 }
314 return FALSE;
315 case 0x83: /* add $n,%rsp */
316 if (!sw_read_mem(csw, pc + 2, &op2, 1)) return FALSE;
317 if (op0 == 0x48 && op2 == 0xc4)
318 {
319 pc += 4;
320 break;
321 }
322 return FALSE;
323 case 0x8d: /* lea n(reg),%rsp */
324 if (!sw_read_mem(csw, pc + 2, &op2, 1)) return FALSE;
325 if (op0 & 0x06) return FALSE; /* rex.RX must be cleared */
326 if (((op2 >> 3) & 7) != 4) return FALSE; /* dest reg mus be %rsp */
327 if ((op2 & 7) == 4) return FALSE; /* no SIB byte allowed */
328 if ((op2 >> 6) == 1) /* 8-bit offset */
329 {
330 pc += 4;
331 break;
332 }
333 if ((op2 >> 6) == 2) /* 32-bit offset */
334 {
335 pc += 7;
336 break;
337 }
338 return FALSE;
339 }
340 }
341
342 /* now check for various pop instructions */
343 for (;;)
344 {
345 if (!sw_read_mem(csw, pc, &op0, 1)) return FALSE;
346 if ((op0 & 0xf0) == 0x40) /* rex prefix */
347 {
348 if (!sw_read_mem(csw, ++pc, &op0, 1)) return FALSE;
349 }
350
351 switch (op0)
352 {
353 case 0x58: /* pop %rax/%r8 */
354 case 0x59: /* pop %rcx/%r9 */
355 case 0x5a: /* pop %rdx/%r10 */
356 case 0x5b: /* pop %rbx/%r11 */
357 case 0x5c: /* pop %rsp/%r12 */
358 case 0x5d: /* pop %rbp/%r13 */
359 case 0x5e: /* pop %rsi/%r14 */
360 case 0x5f: /* pop %rdi/%r15 */
361 pc++;
362 continue;
363 case 0xc2: /* ret $nn */
364 case 0xc3: /* ret */
365 return TRUE;
366 case 0xe9: /* jmp nnnn */
367 if (!sw_read_mem(csw, pc + 1, &val32, sizeof(LONG))) return FALSE;
368 pc += 5 + val32;
369 if (pc - base >= function->BeginAddress && pc - base < function->EndAddress)
370 continue;
371 break;
372 case 0xeb: /* jmp n */
373 if (!sw_read_mem(csw, pc + 1, &op1, 1)) return FALSE;
374 pc += 2 + (signed char)op1;
375 if (pc - base >= function->BeginAddress && pc - base < function->EndAddress)
376 continue;
377 break;
378 case 0xf3: /* rep; ret (for amd64 prediction bug) */
379 if (!sw_read_mem(csw, pc + 1, &op1, 1)) return FALSE;
380 return op1 == 0xc3;
381 }
382 return FALSE;
383 }
384 }
385
386 static BOOL interpret_epilog(struct cpu_stack_walk* csw, ULONG64 pc, CONTEXT *context )
387 {
388 BYTE insn, val8;
389 WORD val16;
390 LONG val32;
391 DWORD64 val64;
392
393 for (;;)
394 {
395 BYTE rex = 0;
396
397 if (!sw_read_mem(csw, pc, &insn, 1)) return FALSE;
398 if ((insn & 0xf0) == 0x40)
399 {
400 rex = insn & 0x0f; /* rex prefix */
401 if (!sw_read_mem(csw, ++pc, &insn, 1)) return FALSE;
402 }
403
404 switch (insn)
405 {
406 case 0x58: /* pop %rax/r8 */
407 case 0x59: /* pop %rcx/r9 */
408 case 0x5a: /* pop %rdx/r10 */
409 case 0x5b: /* pop %rbx/r11 */
410 case 0x5c: /* pop %rsp/r12 */
411 case 0x5d: /* pop %rbp/r13 */
412 case 0x5e: /* pop %rsi/r14 */
413 case 0x5f: /* pop %rdi/r15 */
414 if (!sw_read_mem(csw, context->Rsp, &val64, sizeof(DWORD64))) return FALSE;
415 set_int_reg(context, insn - 0x58 + (rex & 1) * 8, val64);
416 context->Rsp += sizeof(ULONG64);
417 pc++;
418 continue;
419 case 0x81: /* add $nnnn,%rsp */
420 if (!sw_read_mem(csw, pc + 2, &val32, sizeof(LONG))) return FALSE;
421 context->Rsp += val32;
422 pc += 2 + sizeof(LONG);
423 continue;
424 case 0x83: /* add $n,%rsp */
425 if (!sw_read_mem(csw, pc + 2, &val8, sizeof(BYTE))) return FALSE;
426 context->Rsp += (signed char)val8;
427 pc += 3;
428 continue;
429 case 0x8d:
430 if (!sw_read_mem(csw, pc + 1, &insn, sizeof(BYTE))) return FALSE;
431 if ((insn >> 6) == 1) /* lea n(reg),%rsp */
432 {
433 if (!sw_read_mem(csw, pc + 2, &val8, sizeof(BYTE))) return FALSE;
434 context->Rsp = get_int_reg( context, (insn & 7) + (rex & 1) * 8 ) + (signed char)val8;
435 pc += 3;
436 }
437 else /* lea nnnn(reg),%rsp */
438 {
439 if (!sw_read_mem(csw, pc + 2, &val32, sizeof(LONG))) return FALSE;
440 context->Rsp = get_int_reg( context, (insn & 7) + (rex & 1) * 8 ) + val32;
441 pc += 2 + sizeof(LONG);
442 }
443 continue;
444 case 0xc2: /* ret $nn */
445 if (!sw_read_mem(csw, context->Rsp, &val64, sizeof(DWORD64))) return FALSE;
446 if (!sw_read_mem(csw, pc + 1, &val16, sizeof(WORD))) return FALSE;
447 context->Rip = val64;
448 context->Rsp += sizeof(ULONG64) + val16;
449 return TRUE;
450 case 0xc3: /* ret */
451 case 0xf3: /* rep; ret */
452 if (!sw_read_mem(csw, context->Rsp, &val64, sizeof(DWORD64))) return FALSE;
453 context->Rip = val64;
454 context->Rsp += sizeof(ULONG64);
455 return TRUE;
456 case 0xe9: /* jmp nnnn */
457 if (!sw_read_mem(csw, pc + 1, &val32, sizeof(LONG))) return FALSE;
458 pc += 5 + val32;
459 continue;
460 case 0xeb: /* jmp n */
461 if (!sw_read_mem(csw, pc + 1, &val8, sizeof(BYTE))) return FALSE;
462 pc += 2 + (signed char)val8;
463 continue;
464 }
465 FIXME("unsupported insn %x\n", insn);
466 return FALSE;
467 }
468 }
469
470 static BOOL default_unwind(struct cpu_stack_walk* csw, CONTEXT* context)
471 {
472 if (!sw_read_mem(csw, context->Rsp, &context->Rip, sizeof(DWORD64)))
473 {
474 WARN("Cannot read new frame offset %s\n", wine_dbgstr_longlong(context->Rsp));
475 return FALSE;
476 }
477 context->Rsp += sizeof(DWORD64);
478 return TRUE;
479 }
480
481 static BOOL interpret_function_table_entry(struct cpu_stack_walk* csw,
482 CONTEXT* context, RUNTIME_FUNCTION* function, DWORD64 base)
483 {
484 char buffer[sizeof(UNWIND_INFO) + 256 * sizeof(UNWIND_CODE)];
485 UNWIND_INFO* info = (UNWIND_INFO*)buffer;
486 unsigned i;
487 DWORD64 newframe, prolog_offset, off, value;
488 M128A floatvalue;
489 union handler_data handler_data;
490 BOOL mach_frame = FALSE;
491
492 /* FIXME: we have some assumptions here */
493 assert(context);
494 dump_unwind_info(csw, sw_module_base(csw, context->Rip), function);
495 newframe = context->Rsp;
496 for (;;)
497 {
498 if (!sw_read_mem(csw, base + function->UnwindData, info, sizeof(*info)) ||
499 !sw_read_mem(csw, base + function->UnwindData + FIELD_OFFSET(UNWIND_INFO, UnwindCode),
500 info->UnwindCode, info->CountOfCodes * sizeof(UNWIND_CODE)))
501 {
502 WARN("Couldn't read unwind_code at %Ix\n", base + function->UnwindData);
503 return FALSE;
504 }
505
506 if (info->Version != 1 && info->Version != 2)
507 {
508 WARN("unknown unwind info version %u at %Ix\n", info->Version, base + function->UnwindData);
509 return FALSE;
510 }
511
512 if (info->FrameRegister)
513 newframe = get_int_reg(context, info->FrameRegister) - info->FrameOffset * 16;
514
515 /* check if in prolog */
516 if (context->Rip >= base + function->BeginAddress &&
517 context->Rip < base + function->BeginAddress + info->SizeOfProlog)
518 {
519 prolog_offset = context->Rip - base - function->BeginAddress;
520 }
521 else
522 {
523 prolog_offset = ~0;
524 if (is_inside_epilog(csw, context->Rip, base, function))
525 {
526 interpret_epilog(csw, context->Rip, context);
527 return TRUE;
528 }
529 }
530
531 for (i = 0; i < info->CountOfCodes; i += get_opcode_size(info->UnwindCode[i]))
532 {
533 if (prolog_offset < info->UnwindCode[i].u.CodeOffset) continue; /* skip it */
534
535 switch (info->UnwindCode[i].u.UnwindOp)
536 {
537 case UWOP_PUSH_NONVOL: /* pushq %reg */
538 if (!sw_read_mem(csw, context->Rsp, &value, sizeof(DWORD64))) return FALSE;
539 set_int_reg(context, info->UnwindCode[i].u.OpInfo, value);
540 context->Rsp += sizeof(ULONG64);
541 break;
542 case UWOP_ALLOC_LARGE: /* subq $nn,%rsp */
543 if (info->UnwindCode[i].u.OpInfo) context->Rsp += *(DWORD*)&info->UnwindCode[i+1];
544 else context->Rsp += *(USHORT*)&info->UnwindCode[i+1] * 8;
545 break;
546 case UWOP_ALLOC_SMALL: /* subq $n,%rsp */
547 context->Rsp += (info->UnwindCode[i].u.OpInfo + 1) * 8;
548 break;
549 case UWOP_SET_FPREG: /* leaq nn(%rsp),%framereg */
550 context->Rsp = newframe;
551 break;
552 case UWOP_SAVE_NONVOL: /* movq %reg,n(%rsp) */
553 off = newframe + *(USHORT*)&info->UnwindCode[i+1] * 8;
554 if (!sw_read_mem(csw, off, &value, sizeof(DWORD64))) return FALSE;
555 set_int_reg(context, info->UnwindCode[i].u.OpInfo, value);
556 break;
557 case UWOP_SAVE_NONVOL_FAR: /* movq %reg,nn(%rsp) */
558 off = newframe + *(DWORD*)&info->UnwindCode[i+1];
559 if (!sw_read_mem(csw, off, &value, sizeof(DWORD64))) return FALSE;
560 set_int_reg(context, info->UnwindCode[i].u.OpInfo, value);
561 break;
562 case UWOP_SAVE_XMM128: /* movaps %xmmreg,n(%rsp) */
563 off = newframe + *(USHORT*)&info->UnwindCode[i+1] * 16;
564 if (!sw_read_mem(csw, off, &floatvalue, sizeof(M128A))) return FALSE;
565 set_float_reg(context, info->UnwindCode[i].u.OpInfo, floatvalue);
566 break;
567 case UWOP_SAVE_XMM128_FAR: /* movaps %xmmreg,nn(%rsp) */
568 off = newframe + *(DWORD*)&info->UnwindCode[i+1];
569 if (!sw_read_mem(csw, off, &floatvalue, sizeof(M128A))) return FALSE;
570 set_float_reg(context, info->UnwindCode[i].u.OpInfo, floatvalue);
571 break;
572 case UWOP_PUSH_MACHFRAME:
573 if (info->Flags & UNW_FLAG_CHAININFO)
574 {
575 FIXME("PUSH_MACHFRAME with chained unwind info.\n");
576 break;
577 }
578 if (i + get_opcode_size(info->UnwindCode[i]) < info->CountOfCodes)
579 {
580 FIXME("PUSH_MACHFRAME is not the last opcode.\n");
581 break;
582 }
583
584 if (info->UnwindCode[i].u.OpInfo)
585 context->Rsp += 0x8;
586
587 if (!sw_read_mem(csw, context->Rsp, &context->Rip, sizeof(DWORD64))) return FALSE;
588 if (!sw_read_mem(csw, context->Rsp + 24, &context->Rsp, sizeof(DWORD64))) return FALSE;
589 mach_frame = TRUE;
590 break;
591 default:
592 FIXME("unknown code %u\n", info->UnwindCode[i].u.UnwindOp);
593 break;
594 }
595 }
596 if (!(info->Flags & UNW_FLAG_CHAININFO)) break;
597 if (!sw_read_mem(csw, base + function->UnwindData + FIELD_OFFSET(UNWIND_INFO, UnwindCode) +
598 ((info->CountOfCodes + 1) & ~1) * sizeof(UNWIND_CODE),
599 &handler_data, sizeof(handler_data))) return FALSE;
600 function = &handler_data.chain; /* restart with the chained info */
601 }
602 return mach_frame ? TRUE : default_unwind(csw, context);
603 }
604
605 /* fetch_next_frame()
606 *
607 * modify (at least) context.{rip, rsp, rbp} using unwind information
608 * either out of PE exception handlers, debug info (dwarf), or simple stack unwind
609 */
610 static BOOL fetch_next_frame(struct cpu_stack_walk *csw, union ctx *pcontext,
611 DWORD_PTR curr_pc, void** prtf)
612 {
613 DWORD64 cfa;
614 RUNTIME_FUNCTION* rtf;
615 DWORD64 base;
616 CONTEXT *context = &pcontext->ctx;
617
618 if (!curr_pc || !(base = sw_module_base(csw, curr_pc))) return FALSE;
619 rtf = sw_table_access(csw, curr_pc);
620 if (prtf) *prtf = rtf;
621 if (rtf)
622 {
623 return interpret_function_table_entry(csw, context, rtf, base);
624 }
625 else if (dwarf2_virtual_unwind(csw, curr_pc, pcontext, &cfa))
626 {
627 context->Rsp = cfa;
628 TRACE("next function rip=%016Ix\n", context->Rip);
629 TRACE(" rax=%016Ix rbx=%016Ix rcx=%016Ix rdx=%016Ix\n",
630 context->Rax, context->Rbx, context->Rcx, context->Rdx);
631 TRACE(" rsi=%016Ix rdi=%016Ix rbp=%016Ix rsp=%016Ix\n",
632 context->Rsi, context->Rdi, context->Rbp, context->Rsp);
633 TRACE(" r8=%016Ix r9=%016Ix r10=%016Ix r11=%016Ix\n",
634 context->R8, context->R9, context->R10, context->R11);
635 TRACE(" r12=%016Ix r13=%016Ix r14=%016Ix r15=%016Ix\n",
636 context->R12, context->R13, context->R14, context->R15);
637 return TRUE;
638 }
639 else
640 return default_unwind(csw, context);
641 }
642
643 static BOOL x86_64_stack_walk(struct cpu_stack_walk *csw, STACKFRAME64 *frame,
644 union ctx *context)
645 {
646 unsigned deltapc = curr_count <= 1 ? 0 : 1;
647
648 /* sanity check */
649 if (curr_mode >= stm_done) return FALSE;
650 assert(!csw->is32);
651
652 TRACE("Enter: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s\n",
653 wine_dbgstr_addr(&frame->AddrPC),
654 wine_dbgstr_addr(&frame->AddrFrame),
655 wine_dbgstr_addr(&frame->AddrReturn),
656 wine_dbgstr_addr(&frame->AddrStack),
657 curr_mode == stm_start ? "start" : "64bit",
658 wine_dbgstr_longlong(curr_count));
659
660 if (curr_mode == stm_start)
661 {
662 if ((frame->AddrPC.Mode == AddrModeFlat) &&
663 (frame->AddrFrame.Mode != AddrModeFlat))
664 {
665 WARN("Bad AddrPC.Mode / AddrFrame.Mode combination\n");
666 goto done_err;
667 }
668
669 /* Init done */
670 curr_mode = stm_64bit;
671 frame->AddrReturn.Mode = frame->AddrStack.Mode = AddrModeFlat;
672 /* don't set up AddrStack on first call. Either the caller has set it up, or
673 * we will get it in the next frame
674 */
675 memset(&frame->AddrBStore, 0, sizeof(frame->AddrBStore));
676 }
677 else
678 {
679 if (context->ctx.Rsp != frame->AddrStack.Offset) FIXME("inconsistent Stack Pointer\n");
680 if (context->ctx.Rip != frame->AddrPC.Offset) FIXME("inconsistent Instruction Pointer\n");
681
682 if (frame->AddrReturn.Offset == 0) goto done_err;
683 if (!fetch_next_frame(csw, context, frame->AddrPC.Offset - deltapc, &frame->FuncTableEntry))
684 goto done_err;
685 deltapc = 1;
686 }
687
688 memset(&frame->Params, 0, sizeof(frame->Params));
689
690 /* set frame information */
691 frame->AddrStack.Offset = context->ctx.Rsp;
692 frame->AddrFrame.Offset = context->ctx.Rbp;
693 frame->AddrPC.Offset = context->ctx.Rip;
694 if (1)
695 {
696 union ctx newctx = *context;
697
698 if (!fetch_next_frame(csw, &newctx, frame->AddrPC.Offset - deltapc, NULL))
699 goto done_err;
700 frame->AddrReturn.Mode = AddrModeFlat;
701 frame->AddrReturn.Offset = newctx.ctx.Rip;
702 }
703
704 frame->Far = TRUE;
705 frame->Virtual = TRUE;
706 curr_count++;
707
708 TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s FuncTable=%p\n",
709 wine_dbgstr_addr(&frame->AddrPC),
710 wine_dbgstr_addr(&frame->AddrFrame),
711 wine_dbgstr_addr(&frame->AddrReturn),
712 wine_dbgstr_addr(&frame->AddrStack),
713 curr_mode == stm_start ? "start" : "64bit",
714 wine_dbgstr_longlong(curr_count),
715 frame->FuncTableEntry);
716
717 return TRUE;
718 done_err:
719 curr_mode = stm_done;
720 return FALSE;
721 }
722 #else
723 static BOOL x86_64_stack_walk(struct cpu_stack_walk *csw, STACKFRAME64 *frame,
724 union ctx *ctx)
725 {
726 return FALSE;
727 }
728 #endif
729
730 static void* x86_64_find_runtime_function(struct module* module, DWORD64 addr)
731 {
732 #ifdef __x86_64__
733 RUNTIME_FUNCTION* rtf;
734 ULONG size;
735 int min, max;
736
737 rtf = (RUNTIME_FUNCTION*)pe_map_directory(module, IMAGE_DIRECTORY_ENTRY_EXCEPTION, &size);
738 if (rtf) for (min = 0, max = size / sizeof(*rtf); min <= max; )
739 {
740 int pos = (min + max) / 2;
741 if (addr < module->module.BaseOfImage + rtf[pos].BeginAddress) max = pos - 1;
742 else if (addr >= module->module.BaseOfImage + rtf[pos].EndAddress) min = pos + 1;
743 else
744 {
745 rtf += pos;
746 while (rtf->UnwindData & 1) /* follow chained entry */
747 {
748 FIXME("RunTime_Function outside IMAGE_DIRECTORY_ENTRY_EXCEPTION unimplemented yet!\n");
749 return NULL;
750 /* we need to read into the other process */
751 /* rtf = (RUNTIME_FUNCTION*)(module->module.BaseOfImage + (rtf->UnwindData & ~1)); */
752 }
753 return rtf;
754 }
755 }
756 #endif
757 return NULL;
758 }
759
760 static unsigned x86_64_map_dwarf_register(unsigned regno, const struct module* module, BOOL eh_frame)
761 {
762 unsigned reg;
763
764 if (regno >= 17 && regno <= 24)
765 reg = CV_AMD64_XMM0 + regno - 17;
766 else if (regno >= 25 && regno <= 32)
767 reg = CV_AMD64_XMM8 + regno - 25;
768 else if (regno >= 33 && regno <= 40)
769 reg = CV_AMD64_ST0 + regno - 33;
770 else switch (regno)
771 {
772 case 0: reg = CV_AMD64_RAX; break;
773 case 1: reg = CV_AMD64_RDX; break;
774 case 2: reg = CV_AMD64_RCX; break;
775 case 3: reg = CV_AMD64_RBX; break;
776 case 4: reg = CV_AMD64_RSI; break;
777 case 5: reg = CV_AMD64_RDI; break;
778 case 6: reg = CV_AMD64_RBP; break;
779 case 7: reg = CV_AMD64_RSP; break;
780 case 8: reg = CV_AMD64_R8; break;
781 case 9: reg = CV_AMD64_R9; break;
782 case 10: reg = CV_AMD64_R10; break;
783 case 11: reg = CV_AMD64_R11; break;
784 case 12: reg = CV_AMD64_R12; break;
785 case 13: reg = CV_AMD64_R13; break;
786 case 14: reg = CV_AMD64_R14; break;
787 case 15: reg = CV_AMD64_R15; break;
788 case 16: reg = CV_AMD64_RIP; break;
789 case 49: reg = CV_AMD64_EFLAGS; break;
790 case 50: reg = CV_AMD64_ES; break;
791 case 51: reg = CV_AMD64_CS; break;
792 case 52: reg = CV_AMD64_SS; break;
793 case 53: reg = CV_AMD64_DS; break;
794 case 54: reg = CV_AMD64_FS; break;
795 case 55: reg = CV_AMD64_GS; break;
796 case 62: reg = CV_AMD64_TR; break;
797 case 63: reg = CV_AMD64_LDTR; break;
798 case 64: reg = CV_AMD64_MXCSR; break;
799 case 65: reg = CV_AMD64_CTRL; break;
800 case 66: reg = CV_AMD64_STAT; break;
801 /*
802 * 56-57 reserved
803 * 58 %fs.base
804 * 59 %gs.base
805 * 60-61 reserved
806 */
807 default:
808 FIXME("Don't know how to map register %d\n", regno);
809 return 0;
810 }
811 return reg;
812 }
813
814 static void *x86_64_fetch_context_reg(union ctx *pctx, unsigned regno, unsigned *size)
815 {
816 #ifdef __x86_64__
817 CONTEXT *ctx = &pctx->ctx;
818
819 switch (regno)
820 {
821 case CV_AMD64_RAX: *size = sizeof(ctx->Rax); return &ctx->Rax;
822 case CV_AMD64_RDX: *size = sizeof(ctx->Rdx); return &ctx->Rdx;
823 case CV_AMD64_RCX: *size = sizeof(ctx->Rcx); return &ctx->Rcx;
824 case CV_AMD64_RBX: *size = sizeof(ctx->Rbx); return &ctx->Rbx;
825 case CV_AMD64_RSI: *size = sizeof(ctx->Rsi); return &ctx->Rsi;
826 case CV_AMD64_RDI: *size = sizeof(ctx->Rdi); return &ctx->Rdi;
827 case CV_AMD64_RBP: *size = sizeof(ctx->Rbp); return &ctx->Rbp;
828 case CV_AMD64_RSP: *size = sizeof(ctx->Rsp); return &ctx->Rsp;
829 case CV_AMD64_R8: *size = sizeof(ctx->R8); return &ctx->R8;
830 case CV_AMD64_R9: *size = sizeof(ctx->R9); return &ctx->R9;
831 case CV_AMD64_R10: *size = sizeof(ctx->R10); return &ctx->R10;
832 case CV_AMD64_R11: *size = sizeof(ctx->R11); return &ctx->R11;
833 case CV_AMD64_R12: *size = sizeof(ctx->R12); return &ctx->R12;
834 case CV_AMD64_R13: *size = sizeof(ctx->R13); return &ctx->R13;
835 case CV_AMD64_R14: *size = sizeof(ctx->R14); return &ctx->R14;
836 case CV_AMD64_R15: *size = sizeof(ctx->R15); return &ctx->R15;
837 case CV_AMD64_RIP: *size = sizeof(ctx->Rip); return &ctx->Rip;
838
839 case CV_AMD64_XMM0 + 0: *size = sizeof(ctx->u.s.Xmm0 ); return &ctx->u.s.Xmm0;
840 case CV_AMD64_XMM0 + 1: *size = sizeof(ctx->u.s.Xmm1 ); return &ctx->u.s.Xmm1;
841 case CV_AMD64_XMM0 + 2: *size = sizeof(ctx->u.s.Xmm2 ); return &ctx->u.s.Xmm2;
842 case CV_AMD64_XMM0 + 3: *size = sizeof(ctx->u.s.Xmm3 ); return &ctx->u.s.Xmm3;
843 case CV_AMD64_XMM0 + 4: *size = sizeof(ctx->u.s.Xmm4 ); return &ctx->u.s.Xmm4;
844 case CV_AMD64_XMM0 + 5: *size = sizeof(ctx->u.s.Xmm5 ); return &ctx->u.s.Xmm5;
845 case CV_AMD64_XMM0 + 6: *size = sizeof(ctx->u.s.Xmm6 ); return &ctx->u.s.Xmm6;
846 case CV_AMD64_XMM0 + 7: *size = sizeof(ctx->u.s.Xmm7 ); return &ctx->u.s.Xmm7;
847 case CV_AMD64_XMM8 + 0: *size = sizeof(ctx->u.s.Xmm8 ); return &ctx->u.s.Xmm8;
848 case CV_AMD64_XMM8 + 1: *size = sizeof(ctx->u.s.Xmm9 ); return &ctx->u.s.Xmm9;
849 case CV_AMD64_XMM8 + 2: *size = sizeof(ctx->u.s.Xmm10); return &ctx->u.s.Xmm10;
850 case CV_AMD64_XMM8 + 3: *size = sizeof(ctx->u.s.Xmm11); return &ctx->u.s.Xmm11;
851 case CV_AMD64_XMM8 + 4: *size = sizeof(ctx->u.s.Xmm12); return &ctx->u.s.Xmm12;
852 case CV_AMD64_XMM8 + 5: *size = sizeof(ctx->u.s.Xmm13); return &ctx->u.s.Xmm13;
853 case CV_AMD64_XMM8 + 6: *size = sizeof(ctx->u.s.Xmm14); return &ctx->u.s.Xmm14;
854 case CV_AMD64_XMM8 + 7: *size = sizeof(ctx->u.s.Xmm15); return &ctx->u.s.Xmm15;
855
856 case CV_AMD64_ST0 + 0: *size = sizeof(ctx->u.s.Legacy[0]); return &ctx->u.s.Legacy[0];
857 case CV_AMD64_ST0 + 1: *size = sizeof(ctx->u.s.Legacy[1]); return &ctx->u.s.Legacy[1];
858 case CV_AMD64_ST0 + 2: *size = sizeof(ctx->u.s.Legacy[2]); return &ctx->u.s.Legacy[2];
859 case CV_AMD64_ST0 + 3: *size = sizeof(ctx->u.s.Legacy[3]); return &ctx->u.s.Legacy[3];
860 case CV_AMD64_ST0 + 4: *size = sizeof(ctx->u.s.Legacy[4]); return &ctx->u.s.Legacy[4];
861 case CV_AMD64_ST0 + 5: *size = sizeof(ctx->u.s.Legacy[5]); return &ctx->u.s.Legacy[5];
862 case CV_AMD64_ST0 + 6: *size = sizeof(ctx->u.s.Legacy[6]); return &ctx->u.s.Legacy[6];
863 case CV_AMD64_ST0 + 7: *size = sizeof(ctx->u.s.Legacy[7]); return &ctx->u.s.Legacy[7];
864
865 case CV_AMD64_EFLAGS: *size = sizeof(ctx->EFlags); return &ctx->EFlags;
866 case CV_AMD64_ES: *size = sizeof(ctx->SegEs); return &ctx->SegEs;
867 case CV_AMD64_CS: *size = sizeof(ctx->SegCs); return &ctx->SegCs;
868 case CV_AMD64_SS: *size = sizeof(ctx->SegSs); return &ctx->SegSs;
869 case CV_AMD64_DS: *size = sizeof(ctx->SegDs); return &ctx->SegDs;
870 case CV_AMD64_FS: *size = sizeof(ctx->SegFs); return &ctx->SegFs;
871 case CV_AMD64_GS: *size = sizeof(ctx->SegGs); return &ctx->SegGs;
872
873 }
874 #endif
875 FIXME("Unknown register %x\n", regno);
876 return NULL;
877 }
878
879 static const char* x86_64_fetch_regname(unsigned regno)
880 {
881 switch (regno)
882 {
883 case CV_AMD64_RAX: return "rax";
884 case CV_AMD64_RDX: return "rdx";
885 case CV_AMD64_RCX: return "rcx";
886 case CV_AMD64_RBX: return "rbx";
887 case CV_AMD64_RSI: return "rsi";
888 case CV_AMD64_RDI: return "rdi";
889 case CV_AMD64_RBP: return "rbp";
890 case CV_AMD64_RSP: return "rsp";
891 case CV_AMD64_R8: return "r8";
892 case CV_AMD64_R9: return "r9";
893 case CV_AMD64_R10: return "r10";
894 case CV_AMD64_R11: return "r11";
895 case CV_AMD64_R12: return "r12";
896 case CV_AMD64_R13: return "r13";
897 case CV_AMD64_R14: return "r14";
898 case CV_AMD64_R15: return "r15";
899 case CV_AMD64_RIP: return "rip";
900
901 case CV_AMD64_XMM0 + 0: return "xmm0";
902 case CV_AMD64_XMM0 + 1: return "xmm1";
903 case CV_AMD64_XMM0 + 2: return "xmm2";
904 case CV_AMD64_XMM0 + 3: return "xmm3";
905 case CV_AMD64_XMM0 + 4: return "xmm4";
906 case CV_AMD64_XMM0 + 5: return "xmm5";
907 case CV_AMD64_XMM0 + 6: return "xmm6";
908 case CV_AMD64_XMM0 + 7: return "xmm7";
909 case CV_AMD64_XMM8 + 0: return "xmm8";
910 case CV_AMD64_XMM8 + 1: return "xmm9";
911 case CV_AMD64_XMM8 + 2: return "xmm10";
912 case CV_AMD64_XMM8 + 3: return "xmm11";
913 case CV_AMD64_XMM8 + 4: return "xmm12";
914 case CV_AMD64_XMM8 + 5: return "xmm13";
915 case CV_AMD64_XMM8 + 6: return "xmm14";
916 case CV_AMD64_XMM8 + 7: return "xmm15";
917
918 case CV_AMD64_ST0 + 0: return "st0";
919 case CV_AMD64_ST0 + 1: return "st1";
920 case CV_AMD64_ST0 + 2: return "st2";
921 case CV_AMD64_ST0 + 3: return "st3";
922 case CV_AMD64_ST0 + 4: return "st4";
923 case CV_AMD64_ST0 + 5: return "st5";
924 case CV_AMD64_ST0 + 6: return "st6";
925 case CV_AMD64_ST0 + 7: return "st7";
926
927 case CV_AMD64_EFLAGS: return "eflags";
928 case CV_AMD64_ES: return "es";
929 case CV_AMD64_CS: return "cs";
930 case CV_AMD64_SS: return "ss";
931 case CV_AMD64_DS: return "ds";
932 case CV_AMD64_FS: return "fs";
933 case CV_AMD64_GS: return "gs";
934 }
935 FIXME("Unknown register %x\n", regno);
936 return NULL;
937 }
938
939 static BOOL x86_64_fetch_minidump_thread(struct dump_context* dc, unsigned index, unsigned flags, const CONTEXT* ctx)
940 {
941 if (ctx->ContextFlags && (flags & ThreadWriteInstructionWindow))
942 {
943 /* FIXME: crop values across module boundaries, */
944 #ifdef __x86_64__
945 ULONG64 base = ctx->Rip <= 0x80 ? 0 : ctx->Rip - 0x80;
946 minidump_add_memory_block(dc, base, ctx->Rip + 0x80 - base, 0);
947 #endif
948 }
949
950 return TRUE;
951 }
952
953 static BOOL x86_64_fetch_minidump_module(struct dump_context* dc, unsigned index, unsigned flags)
954 {
955 /* FIXME: not sure about the flags... */
956 if (1)
957 {
958 /* FIXME: crop values across module boundaries, */
959 #ifdef __x86_64__
960 struct process* pcs;
961 struct module* module;
962 const RUNTIME_FUNCTION* rtf;
963 ULONG size;
964
965 if (!(pcs = process_find_by_handle(dc->process->handle)) ||
966 !(module = module_find_by_addr(pcs, dc->modules[index].base, DMT_UNKNOWN)))
967 return FALSE;
968 rtf = (const RUNTIME_FUNCTION*)pe_map_directory(module, IMAGE_DIRECTORY_ENTRY_EXCEPTION, &size);
969 if (rtf)
970 {
971 const RUNTIME_FUNCTION* end = (const RUNTIME_FUNCTION*)((const char*)rtf + size);
972 UNWIND_INFO ui;
973
974 while (rtf + 1 < end)
975 {
976 while (rtf->UnwindData & 1) /* follow chained entry */
977 {
978 FIXME("RunTime_Function outside IMAGE_DIRECTORY_ENTRY_EXCEPTION unimplemented yet!\n");
979 return FALSE;
980 /* we need to read into the other process */
981 /* rtf = (RUNTIME_FUNCTION*)(module->module.BaseOfImage + (rtf->UnwindData & ~1)); */
982 }
983 if (read_process_memory(dc->process, dc->modules[index].base + rtf->UnwindData, &ui, sizeof(ui)))
984 minidump_add_memory_block(dc, dc->modules[index].base + rtf->UnwindData,
985 FIELD_OFFSET(UNWIND_INFO, UnwindCode) + ui.CountOfCodes * sizeof(UNWIND_CODE), 0);
986 rtf++;
987 }
988 }
989 #endif
990 }
991
992 return TRUE;
993 }
994
995 DECLSPEC_HIDDEN struct cpu cpu_x86_64 = {
996 IMAGE_FILE_MACHINE_AMD64,
997 8,
998 CV_AMD64_RSP,
999 x86_64_get_addr,
1000 x86_64_stack_walk,
1001 x86_64_find_runtime_function,
1002 x86_64_map_dwarf_register,
1003 x86_64_fetch_context_reg,
1004 x86_64_fetch_regname,
1005 x86_64_fetch_minidump_thread,
1006 x86_64_fetch_minidump_module,
1007 };
Windows API implementation