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configure: Add a check for sys/ucontext.h and include it where appropriate.
[wine/wine-gecko.git] / dlls / ntdll / signal_x86_64.c
blob5658537eeed26cc631ba72e94afae6584d2b3b87
1 /*
2 * x86-64 signal handling routines
3 *
4 * Copyright 1999, 2005 Alexandre Julliard
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 #ifdef __x86_64__
22
23 #include "config.h"
24 #include "wine/port.h"
25
26 #include <assert.h>
27 #include <signal.h>
28 #include <stdlib.h>
29 #include <stdarg.h>
30 #include <stdio.h>
31 #include <sys/types.h>
32 #ifdef HAVE_UNISTD_H
33 # include <unistd.h>
34 #endif
35 #ifdef HAVE_MACHINE_SYSARCH_H
36 # include <machine/sysarch.h>
37 #endif
38 #ifdef HAVE_SYS_PARAM_H
39 # include <sys/param.h>
40 #endif
41 #ifdef HAVE_SYS_SIGNAL_H
42 # include <sys/signal.h>
43 #endif
44 #ifdef HAVE_SYS_UCONTEXT_H
45 # include <sys/ucontext.h>
46 #endif
47
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
50 #include "ntstatus.h"
51 #define WIN32_NO_STATUS
52 #include "windef.h"
53 #include "winternl.h"
54 #include "wine/library.h"
55 #include "wine/exception.h"
56 #include "wine/list.h"
57 #include "ntdll_misc.h"
58 #include "wine/debug.h"
59
60 #ifdef HAVE_VALGRIND_MEMCHECK_H
61 #include <valgrind/memcheck.h>
62 #endif
63
64 WINE_DEFAULT_DEBUG_CHANNEL(seh);
65
66 struct _DISPATCHER_CONTEXT;
67
68 typedef LONG (WINAPI *PC_LANGUAGE_EXCEPTION_HANDLER)( EXCEPTION_POINTERS *ptrs, ULONG64 frame );
69 typedef EXCEPTION_DISPOSITION (WINAPI *PEXCEPTION_ROUTINE)( EXCEPTION_RECORD *rec,
70 ULONG64 frame,
71 CONTEXT *context,
72 struct _DISPATCHER_CONTEXT *dispatch );
73
74 typedef struct _DISPATCHER_CONTEXT
75 {
76 ULONG64 ControlPc;
77 ULONG64 ImageBase;
78 PRUNTIME_FUNCTION FunctionEntry;
79 ULONG64 EstablisherFrame;
80 ULONG64 TargetIp;
81 PCONTEXT ContextRecord;
82 PEXCEPTION_ROUTINE LanguageHandler;
83 PVOID HandlerData;
84 PUNWIND_HISTORY_TABLE HistoryTable;
85 ULONG ScopeIndex;
86 } DISPATCHER_CONTEXT, *PDISPATCHER_CONTEXT;
87
88 typedef struct _SCOPE_TABLE
89 {
90 ULONG Count;
91 struct
92 {
93 ULONG BeginAddress;
94 ULONG EndAddress;
95 ULONG HandlerAddress;
96 ULONG JumpTarget;
97 } ScopeRecord[1];
98 } SCOPE_TABLE, *PSCOPE_TABLE;
99
100
101 /* layering violation: the setjmp buffer is defined in msvcrt, but used by RtlUnwindEx */
102 struct MSVCRT_JUMP_BUFFER
103 {
104 ULONG64 Frame;
105 ULONG64 Rbx;
106 ULONG64 Rsp;
107 ULONG64 Rbp;
108 ULONG64 Rsi;
109 ULONG64 Rdi;
110 ULONG64 R12;
111 ULONG64 R13;
112 ULONG64 R14;
113 ULONG64 R15;
114 ULONG64 Rip;
115 ULONG64 Spare;
116 M128A Xmm6;
117 M128A Xmm7;
118 M128A Xmm8;
119 M128A Xmm9;
120 M128A Xmm10;
121 M128A Xmm11;
122 M128A Xmm12;
123 M128A Xmm13;
124 M128A Xmm14;
125 M128A Xmm15;
126 };
127
128 /***********************************************************************
129 * signal context platform-specific definitions
130 */
131 #ifdef linux
132
133 #include <asm/prctl.h>
134 extern int arch_prctl(int func, void *ptr);
135
136 #define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
137 #define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
138 #define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
139 #define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
140 #define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
141 #define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
142 #define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
143 #define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
144 #define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
145 #define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
146 #define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
147 #define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
148 #define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
149 #define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
150 #define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
151
152 #define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
153 #define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
154 #define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
155
156 #define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
157 #define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
158 #define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
159 #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
160 #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
161
162 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
163
164 #elif defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
165
166 #define RAX_sig(context) ((context)->uc_mcontext.mc_rax)
167 #define RBX_sig(context) ((context)->uc_mcontext.mc_rbx)
168 #define RCX_sig(context) ((context)->uc_mcontext.mc_rcx)
169 #define RDX_sig(context) ((context)->uc_mcontext.mc_rdx)
170 #define RSI_sig(context) ((context)->uc_mcontext.mc_rsi)
171 #define RDI_sig(context) ((context)->uc_mcontext.mc_rdi)
172 #define RBP_sig(context) ((context)->uc_mcontext.mc_rbp)
173 #define R8_sig(context) ((context)->uc_mcontext.mc_r8)
174 #define R9_sig(context) ((context)->uc_mcontext.mc_r9)
175 #define R10_sig(context) ((context)->uc_mcontext.mc_r10)
176 #define R11_sig(context) ((context)->uc_mcontext.mc_r11)
177 #define R12_sig(context) ((context)->uc_mcontext.mc_r12)
178 #define R13_sig(context) ((context)->uc_mcontext.mc_r13)
179 #define R14_sig(context) ((context)->uc_mcontext.mc_r14)
180 #define R15_sig(context) ((context)->uc_mcontext.mc_r15)
181
182 #define CS_sig(context) ((context)->uc_mcontext.mc_cs)
183 #define DS_sig(context) ((context)->uc_mcontext.mc_ds)
184 #define ES_sig(context) ((context)->uc_mcontext.mc_es)
185 #define FS_sig(context) ((context)->uc_mcontext.mc_fs)
186 #define GS_sig(context) ((context)->uc_mcontext.mc_gs)
187 #define SS_sig(context) ((context)->uc_mcontext.mc_ss)
188
189 #define EFL_sig(context) ((context)->uc_mcontext.mc_rflags)
190
191 #define RIP_sig(context) ((context)->uc_mcontext.mc_rip)
192 #define RSP_sig(context) ((context)->uc_mcontext.mc_rsp)
193 #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
194 #define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
195
196 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.mc_fpstate))
197
198 #elif defined(__NetBSD__)
199
200 #define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
201 #define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
202 #define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
203 #define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
204 #define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
205 #define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
206 #define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
207 #define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
208 #define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
209 #define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
210 #define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
211 #define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
212 #define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
213 #define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
214 #define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
215
216 #define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
217 #define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
218 #define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
219 #define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
220 #define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
221 #define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
222
223 #define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
224
225 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
226 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
227
228 #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
229 #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
230
231 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
232 #else
233 #error You must define the signal context functions for your platform
234 #endif
235
236 enum i386_trap_code
237 {
238 TRAP_x86_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
239 TRAP_x86_DIVIDE = 0, /* Division by zero exception */
240 TRAP_x86_TRCTRAP = 1, /* Single-step exception */
241 TRAP_x86_NMI = 2, /* NMI interrupt */
242 TRAP_x86_BPTFLT = 3, /* Breakpoint exception */
243 TRAP_x86_OFLOW = 4, /* Overflow exception */
244 TRAP_x86_BOUND = 5, /* Bound range exception */
245 TRAP_x86_PRIVINFLT = 6, /* Invalid opcode exception */
246 TRAP_x86_DNA = 7, /* Device not available exception */
247 TRAP_x86_DOUBLEFLT = 8, /* Double fault exception */
248 TRAP_x86_FPOPFLT = 9, /* Coprocessor segment overrun */
249 TRAP_x86_TSSFLT = 10, /* Invalid TSS exception */
250 TRAP_x86_SEGNPFLT = 11, /* Segment not present exception */
251 TRAP_x86_STKFLT = 12, /* Stack fault */
252 TRAP_x86_PROTFLT = 13, /* General protection fault */
253 TRAP_x86_PAGEFLT = 14, /* Page fault */
254 TRAP_x86_ARITHTRAP = 16, /* Floating point exception */
255 TRAP_x86_ALIGNFLT = 17, /* Alignment check exception */
256 TRAP_x86_MCHK = 18, /* Machine check exception */
257 TRAP_x86_CACHEFLT = 19 /* Cache flush exception */
258 };
259
260 static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
261 static size_t signal_stack_size;
262
263 typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
264 typedef int (*wine_signal_handler)(unsigned int sig);
265
266 static wine_signal_handler handlers[256];
267
268 /***********************************************************************
269 * Dynamic unwind table
270 */
271
272 struct dynamic_unwind_entry
273 {
274 struct list entry;
275
276 /* memory region which matches this entry */
277 DWORD64 base;
278 DWORD size;
279
280 /* lookup table */
281 RUNTIME_FUNCTION *table;
282 DWORD table_size;
283
284 /* user defined callback */
285 PGET_RUNTIME_FUNCTION_CALLBACK callback;
286 PVOID context;
287 };
288
289 static struct list dynamic_unwind_list = LIST_INIT(dynamic_unwind_list);
290
291 static RTL_CRITICAL_SECTION dynamic_unwind_section;
292 static RTL_CRITICAL_SECTION_DEBUG dynamic_unwind_debug =
293 {
294 0, 0, &dynamic_unwind_section,
295 { &dynamic_unwind_debug.ProcessLocksList, &dynamic_unwind_debug.ProcessLocksList },
296 0, 0, { (DWORD_PTR)(__FILE__ ": dynamic_unwind_section") }
297 };
298 static RTL_CRITICAL_SECTION dynamic_unwind_section = { &dynamic_unwind_debug, -1, 0, 0, 0, 0 };
299
300 /***********************************************************************
301 * Definitions for Win32 unwind tables
302 */
303
304 union handler_data
305 {
306 RUNTIME_FUNCTION chain;
307 ULONG handler;
308 };
309
310 struct opcode
311 {
312 BYTE offset;
313 BYTE code : 4;
314 BYTE info : 4;
315 };
316
317 struct UNWIND_INFO
318 {
319 BYTE version : 3;
320 BYTE flags : 5;
321 BYTE prolog;
322 BYTE count;
323 BYTE frame_reg : 4;
324 BYTE frame_offset : 4;
325 struct opcode opcodes[1]; /* info->count entries */
326 /* followed by handler_data */
327 };
328
329 #define UWOP_PUSH_NONVOL 0
330 #define UWOP_ALLOC_LARGE 1
331 #define UWOP_ALLOC_SMALL 2
332 #define UWOP_SET_FPREG 3
333 #define UWOP_SAVE_NONVOL 4
334 #define UWOP_SAVE_NONVOL_FAR 5
335 #define UWOP_SAVE_XMM128 8
336 #define UWOP_SAVE_XMM128_FAR 9
337 #define UWOP_PUSH_MACHFRAME 10
338
339 static void dump_unwind_info( ULONG64 base, RUNTIME_FUNCTION *function )
340 {
341 static const char * const reg_names[16] =
342 { "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
343 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" };
344
345 union handler_data *handler_data;
346 struct UNWIND_INFO *info;
347 unsigned int i, count;
348
349 TRACE( "**** func %x-%x\n", function->BeginAddress, function->EndAddress );
350 for (;;)
351 {
352 if (function->UnwindData & 1)
353 {
354 RUNTIME_FUNCTION *next = (RUNTIME_FUNCTION *)((char *)base + (function->UnwindData & ~1));
355 TRACE( "unwind info for function %p-%p chained to function %p-%p\n",
356 (char *)base + function->BeginAddress, (char *)base + function->EndAddress,
357 (char *)base + next->BeginAddress, (char *)base + next->EndAddress );
358 function = next;
359 continue;
360 }
361 info = (struct UNWIND_INFO *)((char *)base + function->UnwindData);
362
363 TRACE( "unwind info at %p flags %x prolog 0x%x bytes function %p-%p\n",
364 info, info->flags, info->prolog,
365 (char *)base + function->BeginAddress, (char *)base + function->EndAddress );
366
367 if (info->frame_reg)
368 TRACE( " frame register %s offset 0x%x(%%rsp)\n",
369 reg_names[info->frame_reg], info->frame_offset * 16 );
370
371 for (i = 0; i < info->count; i++)
372 {
373 TRACE( " 0x%x: ", info->opcodes[i].offset );
374 switch (info->opcodes[i].code)
375 {
376 case UWOP_PUSH_NONVOL:
377 TRACE( "pushq %%%s\n", reg_names[info->opcodes[i].info] );
378 break;
379 case UWOP_ALLOC_LARGE:
380 if (info->opcodes[i].info)
381 {
382 count = *(DWORD *)&info->opcodes[i+1];
383 i += 2;
384 }
385 else
386 {
387 count = *(USHORT *)&info->opcodes[i+1] * 8;
388 i++;
389 }
390 TRACE( "subq $0x%x,%%rsp\n", count );
391 break;
392 case UWOP_ALLOC_SMALL:
393 count = (info->opcodes[i].info + 1) * 8;
394 TRACE( "subq $0x%x,%%rsp\n", count );
395 break;
396 case UWOP_SET_FPREG:
397 TRACE( "leaq 0x%x(%%rsp),%s\n",
398 info->frame_offset * 16, reg_names[info->frame_reg] );
399 break;
400 case UWOP_SAVE_NONVOL:
401 count = *(USHORT *)&info->opcodes[i+1] * 8;
402 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names[info->opcodes[i].info], count );
403 i++;
404 break;
405 case UWOP_SAVE_NONVOL_FAR:
406 count = *(DWORD *)&info->opcodes[i+1];
407 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names[info->opcodes[i].info], count );
408 i += 2;
409 break;
410 case UWOP_SAVE_XMM128:
411 count = *(USHORT *)&info->opcodes[i+1] * 16;
412 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info->opcodes[i].info, count );
413 i++;
414 break;
415 case UWOP_SAVE_XMM128_FAR:
416 count = *(DWORD *)&info->opcodes[i+1];
417 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info->opcodes[i].info, count );
418 i += 2;
419 break;
420 case UWOP_PUSH_MACHFRAME:
421 TRACE( "PUSH_MACHFRAME %u\n", info->opcodes[i].info );
422 break;
423 default:
424 FIXME( "unknown code %u\n", info->opcodes[i].code );
425 break;
426 }
427 }
428
429 handler_data = (union handler_data *)&info->opcodes[(info->count + 1) & ~1];
430 if (info->flags & UNW_FLAG_CHAININFO)
431 {
432 TRACE( " chained to function %p-%p\n",
433 (char *)base + handler_data->chain.BeginAddress,
434 (char *)base + handler_data->chain.EndAddress );
435 function = &handler_data->chain;
436 continue;
437 }
438 if (info->flags & (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER))
439 TRACE( " handler %p data at %p\n",
440 (char *)base + handler_data->handler, &handler_data->handler + 1 );
441 break;
442 }
443 }
444
445 static void dump_scope_table( ULONG64 base, const SCOPE_TABLE *table )
446 {
447 unsigned int i;
448
449 TRACE( "scope table at %p\n", table );
450 for (i = 0; i < table->Count; i++)
451 TRACE( " %u: %lx-%lx handler %lx target %lx\n", i,
452 base + table->ScopeRecord[i].BeginAddress,
453 base + table->ScopeRecord[i].EndAddress,
454 base + table->ScopeRecord[i].HandlerAddress,
455 base + table->ScopeRecord[i].JumpTarget );
456 }
457
458
459 /***********************************************************************
460 * Definitions for Dwarf unwind tables
461 */
462
463 enum dwarf_call_frame_info
464 {
465 DW_CFA_advance_loc = 0x40,
466 DW_CFA_offset = 0x80,
467 DW_CFA_restore = 0xc0,
468 DW_CFA_nop = 0x00,
469 DW_CFA_set_loc = 0x01,
470 DW_CFA_advance_loc1 = 0x02,
471 DW_CFA_advance_loc2 = 0x03,
472 DW_CFA_advance_loc4 = 0x04,
473 DW_CFA_offset_extended = 0x05,
474 DW_CFA_restore_extended = 0x06,
475 DW_CFA_undefined = 0x07,
476 DW_CFA_same_value = 0x08,
477 DW_CFA_register = 0x09,
478 DW_CFA_remember_state = 0x0a,
479 DW_CFA_restore_state = 0x0b,
480 DW_CFA_def_cfa = 0x0c,
481 DW_CFA_def_cfa_register = 0x0d,
482 DW_CFA_def_cfa_offset = 0x0e,
483 DW_CFA_def_cfa_expression = 0x0f,
484 DW_CFA_expression = 0x10,
485 DW_CFA_offset_extended_sf = 0x11,
486 DW_CFA_def_cfa_sf = 0x12,
487 DW_CFA_def_cfa_offset_sf = 0x13,
488 DW_CFA_val_offset = 0x14,
489 DW_CFA_val_offset_sf = 0x15,
490 DW_CFA_val_expression = 0x16,
491 };
492
493 enum dwarf_operation
494 {
495 DW_OP_addr = 0x03,
496 DW_OP_deref = 0x06,
497 DW_OP_const1u = 0x08,
498 DW_OP_const1s = 0x09,
499 DW_OP_const2u = 0x0a,
500 DW_OP_const2s = 0x0b,
501 DW_OP_const4u = 0x0c,
502 DW_OP_const4s = 0x0d,
503 DW_OP_const8u = 0x0e,
504 DW_OP_const8s = 0x0f,
505 DW_OP_constu = 0x10,
506 DW_OP_consts = 0x11,
507 DW_OP_dup = 0x12,
508 DW_OP_drop = 0x13,
509 DW_OP_over = 0x14,
510 DW_OP_pick = 0x15,
511 DW_OP_swap = 0x16,
512 DW_OP_rot = 0x17,
513 DW_OP_xderef = 0x18,
514 DW_OP_abs = 0x19,
515 DW_OP_and = 0x1a,
516 DW_OP_div = 0x1b,
517 DW_OP_minus = 0x1c,
518 DW_OP_mod = 0x1d,
519 DW_OP_mul = 0x1e,
520 DW_OP_neg = 0x1f,
521 DW_OP_not = 0x20,
522 DW_OP_or = 0x21,
523 DW_OP_plus = 0x22,
524 DW_OP_plus_uconst = 0x23,
525 DW_OP_shl = 0x24,
526 DW_OP_shr = 0x25,
527 DW_OP_shra = 0x26,
528 DW_OP_xor = 0x27,
529 DW_OP_bra = 0x28,
530 DW_OP_eq = 0x29,
531 DW_OP_ge = 0x2a,
532 DW_OP_gt = 0x2b,
533 DW_OP_le = 0x2c,
534 DW_OP_lt = 0x2d,
535 DW_OP_ne = 0x2e,
536 DW_OP_skip = 0x2f,
537 DW_OP_lit0 = 0x30,
538 DW_OP_lit1 = 0x31,
539 DW_OP_lit2 = 0x32,
540 DW_OP_lit3 = 0x33,
541 DW_OP_lit4 = 0x34,
542 DW_OP_lit5 = 0x35,
543 DW_OP_lit6 = 0x36,
544 DW_OP_lit7 = 0x37,
545 DW_OP_lit8 = 0x38,
546 DW_OP_lit9 = 0x39,
547 DW_OP_lit10 = 0x3a,
548 DW_OP_lit11 = 0x3b,
549 DW_OP_lit12 = 0x3c,
550 DW_OP_lit13 = 0x3d,
551 DW_OP_lit14 = 0x3e,
552 DW_OP_lit15 = 0x3f,
553 DW_OP_lit16 = 0x40,
554 DW_OP_lit17 = 0x41,
555 DW_OP_lit18 = 0x42,
556 DW_OP_lit19 = 0x43,
557 DW_OP_lit20 = 0x44,
558 DW_OP_lit21 = 0x45,
559 DW_OP_lit22 = 0x46,
560 DW_OP_lit23 = 0x47,
561 DW_OP_lit24 = 0x48,
562 DW_OP_lit25 = 0x49,
563 DW_OP_lit26 = 0x4a,
564 DW_OP_lit27 = 0x4b,
565 DW_OP_lit28 = 0x4c,
566 DW_OP_lit29 = 0x4d,
567 DW_OP_lit30 = 0x4e,
568 DW_OP_lit31 = 0x4f,
569 DW_OP_reg0 = 0x50,
570 DW_OP_reg1 = 0x51,
571 DW_OP_reg2 = 0x52,
572 DW_OP_reg3 = 0x53,
573 DW_OP_reg4 = 0x54,
574 DW_OP_reg5 = 0x55,
575 DW_OP_reg6 = 0x56,
576 DW_OP_reg7 = 0x57,
577 DW_OP_reg8 = 0x58,
578 DW_OP_reg9 = 0x59,
579 DW_OP_reg10 = 0x5a,
580 DW_OP_reg11 = 0x5b,
581 DW_OP_reg12 = 0x5c,
582 DW_OP_reg13 = 0x5d,
583 DW_OP_reg14 = 0x5e,
584 DW_OP_reg15 = 0x5f,
585 DW_OP_reg16 = 0x60,
586 DW_OP_reg17 = 0x61,
587 DW_OP_reg18 = 0x62,
588 DW_OP_reg19 = 0x63,
589 DW_OP_reg20 = 0x64,
590 DW_OP_reg21 = 0x65,
591 DW_OP_reg22 = 0x66,
592 DW_OP_reg23 = 0x67,
593 DW_OP_reg24 = 0x68,
594 DW_OP_reg25 = 0x69,
595 DW_OP_reg26 = 0x6a,
596 DW_OP_reg27 = 0x6b,
597 DW_OP_reg28 = 0x6c,
598 DW_OP_reg29 = 0x6d,
599 DW_OP_reg30 = 0x6e,
600 DW_OP_reg31 = 0x6f,
601 DW_OP_breg0 = 0x70,
602 DW_OP_breg1 = 0x71,
603 DW_OP_breg2 = 0x72,
604 DW_OP_breg3 = 0x73,
605 DW_OP_breg4 = 0x74,
606 DW_OP_breg5 = 0x75,
607 DW_OP_breg6 = 0x76,
608 DW_OP_breg7 = 0x77,
609 DW_OP_breg8 = 0x78,
610 DW_OP_breg9 = 0x79,
611 DW_OP_breg10 = 0x7a,
612 DW_OP_breg11 = 0x7b,
613 DW_OP_breg12 = 0x7c,
614 DW_OP_breg13 = 0x7d,
615 DW_OP_breg14 = 0x7e,
616 DW_OP_breg15 = 0x7f,
617 DW_OP_breg16 = 0x80,
618 DW_OP_breg17 = 0x81,
619 DW_OP_breg18 = 0x82,
620 DW_OP_breg19 = 0x83,
621 DW_OP_breg20 = 0x84,
622 DW_OP_breg21 = 0x85,
623 DW_OP_breg22 = 0x86,
624 DW_OP_breg23 = 0x87,
625 DW_OP_breg24 = 0x88,
626 DW_OP_breg25 = 0x89,
627 DW_OP_breg26 = 0x8a,
628 DW_OP_breg27 = 0x8b,
629 DW_OP_breg28 = 0x8c,
630 DW_OP_breg29 = 0x8d,
631 DW_OP_breg30 = 0x8e,
632 DW_OP_breg31 = 0x8f,
633 DW_OP_regx = 0x90,
634 DW_OP_fbreg = 0x91,
635 DW_OP_bregx = 0x92,
636 DW_OP_piece = 0x93,
637 DW_OP_deref_size = 0x94,
638 DW_OP_xderef_size = 0x95,
639 DW_OP_nop = 0x96,
640 DW_OP_push_object_address = 0x97,
641 DW_OP_call2 = 0x98,
642 DW_OP_call4 = 0x99,
643 DW_OP_call_ref = 0x9a,
644 DW_OP_form_tls_address = 0x9b,
645 DW_OP_call_frame_cfa = 0x9c,
646 DW_OP_bit_piece = 0x9d,
647 DW_OP_lo_user = 0xe0,
648 DW_OP_hi_user = 0xff,
649 DW_OP_GNU_push_tls_address = 0xe0,
650 DW_OP_GNU_uninit = 0xf0,
651 DW_OP_GNU_encoded_addr = 0xf1,
652 };
653
654 #define DW_EH_PE_native 0x00
655 #define DW_EH_PE_leb128 0x01
656 #define DW_EH_PE_data2 0x02
657 #define DW_EH_PE_data4 0x03
658 #define DW_EH_PE_data8 0x04
659 #define DW_EH_PE_signed 0x08
660 #define DW_EH_PE_abs 0x00
661 #define DW_EH_PE_pcrel 0x10
662 #define DW_EH_PE_textrel 0x20
663 #define DW_EH_PE_datarel 0x30
664 #define DW_EH_PE_funcrel 0x40
665 #define DW_EH_PE_aligned 0x50
666 #define DW_EH_PE_indirect 0x80
667 #define DW_EH_PE_omit 0xff
668
669 struct dwarf_eh_bases
670 {
671 void *tbase;
672 void *dbase;
673 void *func;
674 };
675
676 struct dwarf_cie
677 {
678 unsigned int length;
679 int id;
680 unsigned char version;
681 unsigned char augmentation[1];
682 };
683
684 struct dwarf_fde
685 {
686 unsigned int length;
687 unsigned int cie_offset;
688 };
689
690 extern const struct dwarf_fde *_Unwind_Find_FDE (void *, struct dwarf_eh_bases *);
691
692 static unsigned char dwarf_get_u1( const unsigned char **p )
693 {
694 return *(*p)++;
695 }
696
697 static unsigned short dwarf_get_u2( const unsigned char **p )
698 {
699 unsigned int ret = (*p)[0] | ((*p)[1] << 8);
700 (*p) += 2;
701 return ret;
702 }
703
704 static unsigned int dwarf_get_u4( const unsigned char **p )
705 {
706 unsigned int ret = (*p)[0] | ((*p)[1] << 8) | ((*p)[2] << 16) | ((*p)[3] << 24);
707 (*p) += 4;
708 return ret;
709 }
710
711 static ULONG64 dwarf_get_u8( const unsigned char **p )
712 {
713 ULONG64 low = dwarf_get_u4( p );
714 ULONG64 high = dwarf_get_u4( p );
715 return low | (high << 32);
716 }
717
718 static ULONG_PTR dwarf_get_uleb128( const unsigned char **p )
719 {
720 ULONG_PTR ret = 0;
721 unsigned int shift = 0;
722 unsigned char byte;
723
724 do
725 {
726 byte = **p;
727 ret |= (ULONG_PTR)(byte & 0x7f) << shift;
728 shift += 7;
729 (*p)++;
730 } while (byte & 0x80);
731 return ret;
732 }
733
734 static LONG_PTR dwarf_get_sleb128( const unsigned char **p )
735 {
736 ULONG_PTR ret = 0;
737 unsigned int shift = 0;
738 unsigned char byte;
739
740 do
741 {
742 byte = **p;
743 ret |= (ULONG_PTR)(byte & 0x7f) << shift;
744 shift += 7;
745 (*p)++;
746 } while (byte & 0x80);
747
748 if ((shift < 8 * sizeof(ret)) && (byte & 0x40)) ret |= -((ULONG_PTR)1 << shift);
749 return ret;
750 }
751
752 static ULONG_PTR dwarf_get_ptr( const unsigned char **p, unsigned char encoding )
753 {
754 ULONG_PTR base;
755
756 if (encoding == DW_EH_PE_omit) return 0;
757
758 switch (encoding & 0xf0)
759 {
760 case DW_EH_PE_abs:
761 base = 0;
762 break;
763 case DW_EH_PE_pcrel:
764 base = (ULONG_PTR)*p;
765 break;
766 default:
767 FIXME( "unsupported encoding %02x\n", encoding );
768 return 0;
769 }
770
771 switch (encoding & 0x0f)
772 {
773 case DW_EH_PE_native:
774 return base + dwarf_get_u8( p );
775 case DW_EH_PE_leb128:
776 return base + dwarf_get_uleb128( p );
777 case DW_EH_PE_data2:
778 return base + dwarf_get_u2( p );
779 case DW_EH_PE_data4:
780 return base + dwarf_get_u4( p );
781 case DW_EH_PE_data8:
782 return base + dwarf_get_u8( p );
783 case DW_EH_PE_signed|DW_EH_PE_leb128:
784 return base + dwarf_get_sleb128( p );
785 case DW_EH_PE_signed|DW_EH_PE_data2:
786 return base + (signed short)dwarf_get_u2( p );
787 case DW_EH_PE_signed|DW_EH_PE_data4:
788 return base + (signed int)dwarf_get_u4( p );
789 case DW_EH_PE_signed|DW_EH_PE_data8:
790 return base + (LONG64)dwarf_get_u8( p );
791 default:
792 FIXME( "unsupported encoding %02x\n", encoding );
793 return 0;
794 }
795 }
796
797 enum reg_rule
798 {
799 RULE_UNSET, /* not set at all */
800 RULE_UNDEFINED, /* undefined value */
801 RULE_SAME, /* same value as previous frame */
802 RULE_CFA_OFFSET, /* stored at cfa offset */
803 RULE_OTHER_REG, /* stored in other register */
804 RULE_EXPRESSION, /* address specified by expression */
805 RULE_VAL_EXPRESSION /* value specified by expression */
806 };
807
808 #define NB_FRAME_REGS 41
809 #define MAX_SAVED_STATES 16
810
811 struct frame_state
812 {
813 ULONG_PTR cfa_offset;
814 unsigned char cfa_reg;
815 enum reg_rule cfa_rule;
816 enum reg_rule rules[NB_FRAME_REGS];
817 ULONG64 regs[NB_FRAME_REGS];
818 };
819
820 struct frame_info
821 {
822 ULONG_PTR ip;
823 ULONG_PTR code_align;
824 LONG_PTR data_align;
825 unsigned char retaddr_reg;
826 unsigned char fde_encoding;
827 unsigned char signal_frame;
828 unsigned char state_sp;
829 struct frame_state state;
830 struct frame_state *state_stack;
831 };
832
833 static const char *dwarf_reg_names[NB_FRAME_REGS] =
834 {
835 /* 0-7 */ "%rax", "%rdx", "%rcx", "%rbx", "%rsi", "%rdi", "%rbp", "%rsp",
836 /* 8-16 */ "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rip",
837 /* 17-24 */ "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",
838 /* 25-32 */ "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15",
839 /* 33-40 */ "%st0", "%st1", "%st2", "%st3", "%st4", "%st5", "%st6", "%st7"
840 };
841
842 static BOOL valid_reg( ULONG_PTR reg )
843 {
844 if (reg >= NB_FRAME_REGS) FIXME( "unsupported reg %lx\n", reg );
845 return (reg < NB_FRAME_REGS);
846 }
847
848 static void execute_cfa_instructions( const unsigned char *ptr, const unsigned char *end,
849 ULONG_PTR last_ip, struct frame_info *info )
850 {
851 while (ptr < end && info->ip < last_ip + info->signal_frame)
852 {
853 enum dwarf_call_frame_info op = *ptr++;
854
855 if (op & 0xc0)
856 {
857 switch (op & 0xc0)
858 {
859 case DW_CFA_advance_loc:
860 {
861 ULONG_PTR offset = (op & 0x3f) * info->code_align;
862 TRACE( "%lx: DW_CFA_advance_loc %lu\n", info->ip, offset );
863 info->ip += offset;
864 break;
865 }
866 case DW_CFA_offset:
867 {
868 ULONG_PTR reg = op & 0x3f;
869 LONG_PTR offset = dwarf_get_uleb128( &ptr ) * info->data_align;
870 if (!valid_reg( reg )) break;
871 TRACE( "%lx: DW_CFA_offset %s, %ld\n", info->ip, dwarf_reg_names[reg], offset );
872 info->state.regs[reg] = offset;
873 info->state.rules[reg] = RULE_CFA_OFFSET;
874 break;
875 }
876 case DW_CFA_restore:
877 {
878 ULONG_PTR reg = op & 0x3f;
879 if (!valid_reg( reg )) break;
880 TRACE( "%lx: DW_CFA_restore %s\n", info->ip, dwarf_reg_names[reg] );
881 info->state.rules[reg] = RULE_UNSET;
882 break;
883 }
884 }
885 }
886 else switch (op)
887 {
888 case DW_CFA_nop:
889 break;
890 case DW_CFA_set_loc:
891 {
892 ULONG_PTR loc = dwarf_get_ptr( &ptr, info->fde_encoding );
893 TRACE( "%lx: DW_CFA_set_loc %lx\n", info->ip, loc );
894 info->ip = loc;
895 break;
896 }
897 case DW_CFA_advance_loc1:
898 {
899 ULONG_PTR offset = *ptr++ * info->code_align;
900 TRACE( "%lx: DW_CFA_advance_loc1 %lu\n", info->ip, offset );
901 info->ip += offset;
902 break;
903 }
904 case DW_CFA_advance_loc2:
905 {
906 ULONG_PTR offset = dwarf_get_u2( &ptr ) * info->code_align;
907 TRACE( "%lx: DW_CFA_advance_loc2 %lu\n", info->ip, offset );
908 info->ip += offset;
909 break;
910 }
911 case DW_CFA_advance_loc4:
912 {
913 ULONG_PTR offset = dwarf_get_u4( &ptr ) * info->code_align;
914 TRACE( "%lx: DW_CFA_advance_loc4 %lu\n", info->ip, offset );
915 info->ip += offset;
916 break;
917 }
918 case DW_CFA_offset_extended:
919 case DW_CFA_offset_extended_sf:
920 {
921 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
922 LONG_PTR offset = (op == DW_CFA_offset_extended) ? dwarf_get_uleb128( &ptr ) * info->data_align
923 : dwarf_get_sleb128( &ptr ) * info->data_align;
924 if (!valid_reg( reg )) break;
925 TRACE( "%lx: DW_CFA_offset_extended %s, %ld\n", info->ip, dwarf_reg_names[reg], offset );
926 info->state.regs[reg] = offset;
927 info->state.rules[reg] = RULE_CFA_OFFSET;
928 break;
929 }
930 case DW_CFA_restore_extended:
931 {
932 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
933 if (!valid_reg( reg )) break;
934 TRACE( "%lx: DW_CFA_restore_extended %s\n", info->ip, dwarf_reg_names[reg] );
935 info->state.rules[reg] = RULE_UNSET;
936 break;
937 }
938 case DW_CFA_undefined:
939 {
940 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
941 if (!valid_reg( reg )) break;
942 TRACE( "%lx: DW_CFA_undefined %s\n", info->ip, dwarf_reg_names[reg] );
943 info->state.rules[reg] = RULE_UNDEFINED;
944 break;
945 }
946 case DW_CFA_same_value:
947 {
948 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
949 if (!valid_reg( reg )) break;
950 TRACE( "%lx: DW_CFA_same_value %s\n", info->ip, dwarf_reg_names[reg] );
951 info->state.regs[reg] = reg;
952 info->state.rules[reg] = RULE_SAME;
953 break;
954 }
955 case DW_CFA_register:
956 {
957 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
958 ULONG_PTR reg2 = dwarf_get_uleb128( &ptr );
959 if (!valid_reg( reg ) || !valid_reg( reg2 )) break;
960 TRACE( "%lx: DW_CFA_register %s == %s\n", info->ip, dwarf_reg_names[reg], dwarf_reg_names[reg2] );
961 info->state.regs[reg] = reg2;
962 info->state.rules[reg] = RULE_OTHER_REG;
963 break;
964 }
965 case DW_CFA_remember_state:
966 TRACE( "%lx: DW_CFA_remember_state\n", info->ip );
967 if (info->state_sp >= MAX_SAVED_STATES)
968 FIXME( "%lx: DW_CFA_remember_state too many nested saves\n", info->ip );
969 else
970 info->state_stack[info->state_sp++] = info->state;
971 break;
972 case DW_CFA_restore_state:
973 TRACE( "%lx: DW_CFA_restore_state\n", info->ip );
974 if (!info->state_sp)
975 FIXME( "%lx: DW_CFA_restore_state without corresponding save\n", info->ip );
976 else
977 info->state = info->state_stack[--info->state_sp];
978 break;
979 case DW_CFA_def_cfa:
980 case DW_CFA_def_cfa_sf:
981 {
982 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
983 ULONG_PTR offset = (op == DW_CFA_def_cfa) ? dwarf_get_uleb128( &ptr )
984 : dwarf_get_sleb128( &ptr ) * info->data_align;
985 if (!valid_reg( reg )) break;
986 TRACE( "%lx: DW_CFA_def_cfa %s, %lu\n", info->ip, dwarf_reg_names[reg], offset );
987 info->state.cfa_reg = reg;
988 info->state.cfa_offset = offset;
989 info->state.cfa_rule = RULE_CFA_OFFSET;
990 break;
991 }
992 case DW_CFA_def_cfa_register:
993 {
994 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
995 if (!valid_reg( reg )) break;
996 TRACE( "%lx: DW_CFA_def_cfa_register %s\n", info->ip, dwarf_reg_names[reg] );
997 info->state.cfa_reg = reg;
998 info->state.cfa_rule = RULE_CFA_OFFSET;
999 break;
1000 }
1001 case DW_CFA_def_cfa_offset:
1002 case DW_CFA_def_cfa_offset_sf:
1003 {
1004 ULONG_PTR offset = (op == DW_CFA_def_cfa_offset) ? dwarf_get_uleb128( &ptr )
1005 : dwarf_get_sleb128( &ptr ) * info->data_align;
1006 TRACE( "%lx: DW_CFA_def_cfa_offset %lu\n", info->ip, offset );
1007 info->state.cfa_offset = offset;
1008 info->state.cfa_rule = RULE_CFA_OFFSET;
1009 break;
1010 }
1011 case DW_CFA_def_cfa_expression:
1012 {
1013 ULONG_PTR expr = (ULONG_PTR)ptr;
1014 ULONG_PTR len = dwarf_get_uleb128( &ptr );
1015 TRACE( "%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info->ip, expr, expr+len );
1016 info->state.cfa_offset = expr;
1017 info->state.cfa_rule = RULE_VAL_EXPRESSION;
1018 ptr += len;
1019 break;
1020 }
1021 case DW_CFA_expression:
1022 case DW_CFA_val_expression:
1023 {
1024 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1025 ULONG_PTR expr = (ULONG_PTR)ptr;
1026 ULONG_PTR len = dwarf_get_uleb128( &ptr );
1027 if (!valid_reg( reg )) break;
1028 TRACE( "%lx: DW_CFA_%sexpression %s %lx-%lx\n",
1029 info->ip, (op == DW_CFA_expression) ? "" : "val_", dwarf_reg_names[reg], expr, expr+len );
1030 info->state.regs[reg] = expr;
1031 info->state.rules[reg] = (op == DW_CFA_expression) ? RULE_EXPRESSION : RULE_VAL_EXPRESSION;
1032 ptr += len;
1033 break;
1034 }
1035 default:
1036 FIXME( "%lx: unknown CFA opcode %02x\n", info->ip, op );
1037 break;
1038 }
1039 }
1040 }
1041
1042 /* retrieve a context register from its dwarf number */
1043 static void *get_context_reg( CONTEXT *context, ULONG_PTR dw_reg )
1044 {
1045 switch (dw_reg)
1046 {
1047 case 0: return &context->Rax;
1048 case 1: return &context->Rdx;
1049 case 2: return &context->Rcx;
1050 case 3: return &context->Rbx;
1051 case 4: return &context->Rsi;
1052 case 5: return &context->Rdi;
1053 case 6: return &context->Rbp;
1054 case 7: return &context->Rsp;
1055 case 8: return &context->R8;
1056 case 9: return &context->R9;
1057 case 10: return &context->R10;
1058 case 11: return &context->R11;
1059 case 12: return &context->R12;
1060 case 13: return &context->R13;
1061 case 14: return &context->R14;
1062 case 15: return &context->R15;
1063 case 16: return &context->Rip;
1064 case 17: return &context->u.s.Xmm0;
1065 case 18: return &context->u.s.Xmm1;
1066 case 19: return &context->u.s.Xmm2;
1067 case 20: return &context->u.s.Xmm3;
1068 case 21: return &context->u.s.Xmm4;
1069 case 22: return &context->u.s.Xmm5;
1070 case 23: return &context->u.s.Xmm6;
1071 case 24: return &context->u.s.Xmm7;
1072 case 25: return &context->u.s.Xmm8;
1073 case 26: return &context->u.s.Xmm9;
1074 case 27: return &context->u.s.Xmm10;
1075 case 28: return &context->u.s.Xmm11;
1076 case 29: return &context->u.s.Xmm12;
1077 case 30: return &context->u.s.Xmm13;
1078 case 31: return &context->u.s.Xmm14;
1079 case 32: return &context->u.s.Xmm15;
1080 case 33: return &context->u.s.Legacy[0];
1081 case 34: return &context->u.s.Legacy[1];
1082 case 35: return &context->u.s.Legacy[2];
1083 case 36: return &context->u.s.Legacy[3];
1084 case 37: return &context->u.s.Legacy[4];
1085 case 38: return &context->u.s.Legacy[5];
1086 case 39: return &context->u.s.Legacy[6];
1087 case 40: return &context->u.s.Legacy[7];
1088 default: return NULL;
1089 }
1090 }
1091
1092 /* set a context register from its dwarf number */
1093 static void set_context_reg( CONTEXT *context, ULONG_PTR dw_reg, void *val )
1094 {
1095 switch (dw_reg)
1096 {
1097 case 0: context->Rax = *(ULONG64 *)val; break;
1098 case 1: context->Rdx = *(ULONG64 *)val; break;
1099 case 2: context->Rcx = *(ULONG64 *)val; break;
1100 case 3: context->Rbx = *(ULONG64 *)val; break;
1101 case 4: context->Rsi = *(ULONG64 *)val; break;
1102 case 5: context->Rdi = *(ULONG64 *)val; break;
1103 case 6: context->Rbp = *(ULONG64 *)val; break;
1104 case 7: context->Rsp = *(ULONG64 *)val; break;
1105 case 8: context->R8 = *(ULONG64 *)val; break;
1106 case 9: context->R9 = *(ULONG64 *)val; break;
1107 case 10: context->R10 = *(ULONG64 *)val; break;
1108 case 11: context->R11 = *(ULONG64 *)val; break;
1109 case 12: context->R12 = *(ULONG64 *)val; break;
1110 case 13: context->R13 = *(ULONG64 *)val; break;
1111 case 14: context->R14 = *(ULONG64 *)val; break;
1112 case 15: context->R15 = *(ULONG64 *)val; break;
1113 case 16: context->Rip = *(ULONG64 *)val; break;
1114 case 17: context->u.s.Xmm0 = *(M128A *)val; break;
1115 case 18: context->u.s.Xmm1 = *(M128A *)val; break;
1116 case 19: context->u.s.Xmm2 = *(M128A *)val; break;
1117 case 20: context->u.s.Xmm3 = *(M128A *)val; break;
1118 case 21: context->u.s.Xmm4 = *(M128A *)val; break;
1119 case 22: context->u.s.Xmm5 = *(M128A *)val; break;
1120 case 23: context->u.s.Xmm6 = *(M128A *)val; break;
1121 case 24: context->u.s.Xmm7 = *(M128A *)val; break;
1122 case 25: context->u.s.Xmm8 = *(M128A *)val; break;
1123 case 26: context->u.s.Xmm9 = *(M128A *)val; break;
1124 case 27: context->u.s.Xmm10 = *(M128A *)val; break;
1125 case 28: context->u.s.Xmm11 = *(M128A *)val; break;
1126 case 29: context->u.s.Xmm12 = *(M128A *)val; break;
1127 case 30: context->u.s.Xmm13 = *(M128A *)val; break;
1128 case 31: context->u.s.Xmm14 = *(M128A *)val; break;
1129 case 32: context->u.s.Xmm15 = *(M128A *)val; break;
1130 case 33: context->u.s.Legacy[0] = *(M128A *)val; break;
1131 case 34: context->u.s.Legacy[1] = *(M128A *)val; break;
1132 case 35: context->u.s.Legacy[2] = *(M128A *)val; break;
1133 case 36: context->u.s.Legacy[3] = *(M128A *)val; break;
1134 case 37: context->u.s.Legacy[4] = *(M128A *)val; break;
1135 case 38: context->u.s.Legacy[5] = *(M128A *)val; break;
1136 case 39: context->u.s.Legacy[6] = *(M128A *)val; break;
1137 case 40: context->u.s.Legacy[7] = *(M128A *)val; break;
1138 }
1139 }
1140
1141 static ULONG_PTR eval_expression( const unsigned char *p, CONTEXT *context )
1142 {
1143 ULONG_PTR reg, tmp, stack[64];
1144 int sp = -1;
1145 ULONG_PTR len = dwarf_get_uleb128(&p);
1146 const unsigned char *end = p + len;
1147
1148 while (p < end)
1149 {
1150 unsigned char opcode = dwarf_get_u1(&p);
1151
1152 if (opcode >= DW_OP_lit0 && opcode <= DW_OP_lit31)
1153 stack[++sp] = opcode - DW_OP_lit0;
1154 else if (opcode >= DW_OP_reg0 && opcode <= DW_OP_reg31)
1155 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, opcode - DW_OP_reg0 );
1156 else if (opcode >= DW_OP_breg0 && opcode <= DW_OP_breg31)
1157 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, opcode - DW_OP_breg0 ) + dwarf_get_sleb128(&p);
1158 else switch (opcode)
1159 {
1160 case DW_OP_nop: break;
1161 case DW_OP_addr: stack[++sp] = dwarf_get_u8(&p); break;
1162 case DW_OP_const1u: stack[++sp] = dwarf_get_u1(&p); break;
1163 case DW_OP_const1s: stack[++sp] = (signed char)dwarf_get_u1(&p); break;
1164 case DW_OP_const2u: stack[++sp] = dwarf_get_u2(&p); break;
1165 case DW_OP_const2s: stack[++sp] = (short)dwarf_get_u2(&p); break;
1166 case DW_OP_const4u: stack[++sp] = dwarf_get_u4(&p); break;
1167 case DW_OP_const4s: stack[++sp] = (signed int)dwarf_get_u4(&p); break;
1168 case DW_OP_const8u: stack[++sp] = dwarf_get_u8(&p); break;
1169 case DW_OP_const8s: stack[++sp] = (LONG_PTR)dwarf_get_u8(&p); break;
1170 case DW_OP_constu: stack[++sp] = dwarf_get_uleb128(&p); break;
1171 case DW_OP_consts: stack[++sp] = dwarf_get_sleb128(&p); break;
1172 case DW_OP_deref: stack[sp] = *(ULONG_PTR *)stack[sp]; break;
1173 case DW_OP_dup: stack[sp + 1] = stack[sp]; sp++; break;
1174 case DW_OP_drop: sp--; break;
1175 case DW_OP_over: stack[sp + 1] = stack[sp - 1]; sp++; break;
1176 case DW_OP_pick: stack[sp + 1] = stack[sp - dwarf_get_u1(&p)]; sp++; break;
1177 case DW_OP_swap: tmp = stack[sp]; stack[sp] = stack[sp-1]; stack[sp-1] = tmp; break;
1178 case DW_OP_rot: tmp = stack[sp]; stack[sp] = stack[sp-1]; stack[sp-1] = stack[sp-2]; stack[sp-2] = tmp; break;
1179 case DW_OP_abs: stack[sp] = labs(stack[sp]); break;
1180 case DW_OP_neg: stack[sp] = -stack[sp]; break;
1181 case DW_OP_not: stack[sp] = ~stack[sp]; break;
1182 case DW_OP_and: stack[sp-1] &= stack[sp]; sp--; break;
1183 case DW_OP_or: stack[sp-1] |= stack[sp]; sp--; break;
1184 case DW_OP_minus: stack[sp-1] -= stack[sp]; sp--; break;
1185 case DW_OP_mul: stack[sp-1] *= stack[sp]; sp--; break;
1186 case DW_OP_plus: stack[sp-1] += stack[sp]; sp--; break;
1187 case DW_OP_xor: stack[sp-1] ^= stack[sp]; sp--; break;
1188 case DW_OP_shl: stack[sp-1] <<= stack[sp]; sp--; break;
1189 case DW_OP_shr: stack[sp-1] >>= stack[sp]; sp--; break;
1190 case DW_OP_plus_uconst: stack[sp] += dwarf_get_uleb128(&p); break;
1191 case DW_OP_shra: stack[sp-1] = (LONG_PTR)stack[sp-1] / (1 << stack[sp]); sp--; break;
1192 case DW_OP_div: stack[sp-1] = (LONG_PTR)stack[sp-1] / (LONG_PTR)stack[sp]; sp--; break;
1193 case DW_OP_mod: stack[sp-1] = (LONG_PTR)stack[sp-1] % (LONG_PTR)stack[sp]; sp--; break;
1194 case DW_OP_ge: stack[sp-1] = ((LONG_PTR)stack[sp-1] >= (LONG_PTR)stack[sp]); sp--; break;
1195 case DW_OP_gt: stack[sp-1] = ((LONG_PTR)stack[sp-1] > (LONG_PTR)stack[sp]); sp--; break;
1196 case DW_OP_le: stack[sp-1] = ((LONG_PTR)stack[sp-1] <= (LONG_PTR)stack[sp]); sp--; break;
1197 case DW_OP_lt: stack[sp-1] = ((LONG_PTR)stack[sp-1] < (LONG_PTR)stack[sp]); sp--; break;
1198 case DW_OP_eq: stack[sp-1] = (stack[sp-1] == stack[sp]); sp--; break;
1199 case DW_OP_ne: stack[sp-1] = (stack[sp-1] != stack[sp]); sp--; break;
1200 case DW_OP_skip: tmp = (short)dwarf_get_u2(&p); p += tmp; break;
1201 case DW_OP_bra: tmp = (short)dwarf_get_u2(&p); if (!stack[sp--]) p += tmp; break;
1202 case DW_OP_GNU_encoded_addr: tmp = *p++; stack[++sp] = dwarf_get_ptr( &p, tmp ); break;
1203 case DW_OP_regx: stack[++sp] = *(ULONG_PTR *)get_context_reg( context, dwarf_get_uleb128(&p) ); break;
1204 case DW_OP_bregx:
1205 reg = dwarf_get_uleb128(&p);
1206 tmp = dwarf_get_sleb128(&p);
1207 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, reg ) + tmp;
1208 break;
1209 case DW_OP_deref_size:
1210 switch (*p++)
1211 {
1212 case 1: stack[sp] = *(unsigned char *)stack[sp]; break;
1213 case 2: stack[sp] = *(unsigned short *)stack[sp]; break;
1214 case 4: stack[sp] = *(unsigned int *)stack[sp]; break;
1215 case 8: stack[sp] = *(ULONG_PTR *)stack[sp]; break;
1216 }
1217 break;
1218 default:
1219 FIXME( "unhandled opcode %02x\n", opcode );
1220 }
1221 }
1222 return stack[sp];
1223 }
1224
1225 /* apply the computed frame info to the actual context */
1226 static void apply_frame_state( CONTEXT *context, struct frame_state *state )
1227 {
1228 unsigned int i;
1229 ULONG_PTR cfa, value;
1230 CONTEXT new_context = *context;
1231
1232 switch (state->cfa_rule)
1233 {
1234 case RULE_EXPRESSION:
1235 cfa = *(ULONG_PTR *)eval_expression( (const unsigned char *)state->cfa_offset, context );
1236 break;
1237 case RULE_VAL_EXPRESSION:
1238 cfa = eval_expression( (const unsigned char *)state->cfa_offset, context );
1239 break;
1240 default:
1241 cfa = *(ULONG_PTR *)get_context_reg( context, state->cfa_reg ) + state->cfa_offset;
1242 break;
1243 }
1244 if (!cfa) return;
1245
1246 for (i = 0; i < NB_FRAME_REGS; i++)
1247 {
1248 switch (state->rules[i])
1249 {
1250 case RULE_UNSET:
1251 case RULE_UNDEFINED:
1252 case RULE_SAME:
1253 break;
1254 case RULE_CFA_OFFSET:
1255 set_context_reg( &new_context, i, (char *)cfa + state->regs[i] );
1256 break;
1257 case RULE_OTHER_REG:
1258 set_context_reg( &new_context, i, get_context_reg( context, state->regs[i] ));
1259 break;
1260 case RULE_EXPRESSION:
1261 value = eval_expression( (const unsigned char *)state->regs[i], context );
1262 set_context_reg( &new_context, i, (void *)value );
1263 break;
1264 case RULE_VAL_EXPRESSION:
1265 value = eval_expression( (const unsigned char *)state->regs[i], context );
1266 set_context_reg( &new_context, i, &value );
1267 break;
1268 }
1269 }
1270 new_context.Rsp = cfa;
1271 *context = new_context;
1272 }
1273
1274
1275 /***********************************************************************
1276 * dwarf_virtual_unwind
1277 *
1278 * Equivalent of RtlVirtualUnwind for builtin modules.
1279 */
1280 static NTSTATUS dwarf_virtual_unwind( ULONG64 ip, ULONG64 *frame,CONTEXT *context,
1281 const struct dwarf_fde *fde, const struct dwarf_eh_bases *bases,
1282 PEXCEPTION_ROUTINE *handler, void **handler_data )
1283 {
1284 const struct dwarf_cie *cie;
1285 const unsigned char *ptr, *augmentation, *end;
1286 ULONG_PTR len, code_end;
1287 struct frame_info info;
1288 struct frame_state state_stack[MAX_SAVED_STATES];
1289 int aug_z_format = 0;
1290 unsigned char lsda_encoding = DW_EH_PE_omit;
1291
1292 memset( &info, 0, sizeof(info) );
1293 info.state_stack = state_stack;
1294 info.ip = (ULONG_PTR)bases->func;
1295 *handler = NULL;
1296
1297 cie = (const struct dwarf_cie *)((const char *)&fde->cie_offset - fde->cie_offset);
1298
1299 /* parse the CIE first */
1300
1301 if (cie->version != 1)
1302 {
1303 FIXME( "unknown CIE version %u at %p\n", cie->version, cie );
1304 return STATUS_INVALID_DISPOSITION;
1305 }
1306 ptr = cie->augmentation + strlen((const char *)cie->augmentation) + 1;
1307
1308 info.code_align = dwarf_get_uleb128( &ptr );
1309 info.data_align = dwarf_get_sleb128( &ptr );
1310 info.retaddr_reg = *ptr++;
1311 info.state.cfa_rule = RULE_CFA_OFFSET;
1312
1313 TRACE( "function %lx base %p cie %p len %x id %x version %x aug '%s' code_align %lu data_align %ld retaddr %s\n",
1314 ip, bases->func, cie, cie->length, cie->id, cie->version, cie->augmentation,
1315 info.code_align, info.data_align, dwarf_reg_names[info.retaddr_reg] );
1316
1317 end = NULL;
1318 for (augmentation = cie->augmentation; *augmentation; augmentation++)
1319 {
1320 switch (*augmentation)
1321 {
1322 case 'z':
1323 len = dwarf_get_uleb128( &ptr );
1324 end = ptr + len;
1325 aug_z_format = 1;
1326 continue;
1327 case 'L':
1328 lsda_encoding = *ptr++;
1329 continue;
1330 case 'P':
1331 {
1332 unsigned char encoding = *ptr++;
1333 *handler = (void *)dwarf_get_ptr( &ptr, encoding );
1334 continue;
1335 }
1336 case 'R':
1337 info.fde_encoding = *ptr++;
1338 continue;
1339 case 'S':
1340 info.signal_frame = 1;
1341 continue;
1342 }
1343 FIXME( "unknown augmentation '%c'\n", *augmentation );
1344 if (!end) return STATUS_INVALID_DISPOSITION; /* cannot continue */
1345 break;
1346 }
1347 if (end) ptr = end;
1348
1349 end = (const unsigned char *)(&cie->length + 1) + cie->length;
1350 execute_cfa_instructions( ptr, end, ip, &info );
1351
1352 ptr = (const unsigned char *)(fde + 1);
1353 info.ip = dwarf_get_ptr( &ptr, info.fde_encoding ); /* fde code start */
1354 code_end = info.ip + dwarf_get_ptr( &ptr, info.fde_encoding & 0x0f ); /* fde code length */
1355
1356 if (aug_z_format) /* get length of augmentation data */
1357 {
1358 len = dwarf_get_uleb128( &ptr );
1359 end = ptr + len;
1360 }
1361 else end = NULL;
1362
1363 *handler_data = (void *)dwarf_get_ptr( &ptr, lsda_encoding );
1364 if (end) ptr = end;
1365
1366 end = (const unsigned char *)(&fde->length + 1) + fde->length;
1367 TRACE( "fde %p len %x personality %p lsda %p code %lx-%lx\n",
1368 fde, fde->length, *handler, *handler_data, info.ip, code_end );
1369 execute_cfa_instructions( ptr, end, ip, &info );
1370 apply_frame_state( context, &info.state );
1371 *frame = context->Rsp;
1372
1373 TRACE( "next function rip=%016lx\n", context->Rip );
1374 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1375 context->Rax, context->Rbx, context->Rcx, context->Rdx );
1376 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1377 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
1378 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1379 context->R8, context->R9, context->R10, context->R11 );
1380 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1381 context->R12, context->R13, context->R14, context->R15 );
1382
1383 return STATUS_SUCCESS;
1384 }
1385
1386
1387 /***********************************************************************
1388 * dispatch_signal
1389 */
1390 static inline int dispatch_signal(unsigned int sig)
1391 {
1392 if (handlers[sig] == NULL) return 0;
1393 return handlers[sig](sig);
1394 }
1395
1396 /***********************************************************************
1397 * get_signal_stack
1398 *
1399 * Get the base of the signal stack for the current thread.
1400 */
1401 static inline void *get_signal_stack(void)
1402 {
1403 return (char *)NtCurrentTeb() + teb_size;
1404 }
1405
1406 /***********************************************************************
1407 * is_inside_signal_stack
1408 *
1409 * Check if pointer is inside the signal stack.
1410 */
1411 static inline BOOL is_inside_signal_stack( void *ptr )
1412 {
1413 return ((char *)ptr >= (char *)get_signal_stack() &&
1414 (char *)ptr < (char *)get_signal_stack() + signal_stack_size);
1415 }
1416
1417 /***********************************************************************
1418 * save_context
1419 *
1420 * Set the register values from a sigcontext.
1421 */
1422 static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
1423 {
1424 context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS;
1425 context->Rax = RAX_sig(sigcontext);
1426 context->Rcx = RCX_sig(sigcontext);
1427 context->Rdx = RDX_sig(sigcontext);
1428 context->Rbx = RBX_sig(sigcontext);
1429 context->Rsp = RSP_sig(sigcontext);
1430 context->Rbp = RBP_sig(sigcontext);
1431 context->Rsi = RSI_sig(sigcontext);
1432 context->Rdi = RDI_sig(sigcontext);
1433 context->R8 = R8_sig(sigcontext);
1434 context->R9 = R9_sig(sigcontext);
1435 context->R10 = R10_sig(sigcontext);
1436 context->R11 = R11_sig(sigcontext);
1437 context->R12 = R12_sig(sigcontext);
1438 context->R13 = R13_sig(sigcontext);
1439 context->R14 = R14_sig(sigcontext);
1440 context->R15 = R15_sig(sigcontext);
1441 context->Rip = RIP_sig(sigcontext);
1442 context->SegCs = CS_sig(sigcontext);
1443 context->SegFs = FS_sig(sigcontext);
1444 context->SegGs = GS_sig(sigcontext);
1445 context->EFlags = EFL_sig(sigcontext);
1446 #ifdef DS_sig
1447 context->SegDs = DS_sig(sigcontext);
1448 #else
1449 __asm__("movw %%ds,%0" : "=m" (context->SegDs));
1450 #endif
1451 #ifdef ES_sig
1452 context->SegEs = ES_sig(sigcontext);
1453 #else
1454 __asm__("movw %%es,%0" : "=m" (context->SegEs));
1455 #endif
1456 #ifdef SS_sig
1457 context->SegSs = SS_sig(sigcontext);
1458 #else
1459 __asm__("movw %%ss,%0" : "=m" (context->SegSs));
1460 #endif
1461 if (FPU_sig(sigcontext))
1462 {
1463 context->ContextFlags |= CONTEXT_FLOATING_POINT;
1464 context->u.FltSave = *FPU_sig(sigcontext);
1465 context->MxCsr = context->u.FltSave.MxCsr;
1466 }
1467 }
1468
1469
1470 /***********************************************************************
1471 * restore_context
1472 *
1473 * Build a sigcontext from the register values.
1474 */
1475 static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
1476 {
1477 RAX_sig(sigcontext) = context->Rax;
1478 RCX_sig(sigcontext) = context->Rcx;
1479 RDX_sig(sigcontext) = context->Rdx;
1480 RBX_sig(sigcontext) = context->Rbx;
1481 RSP_sig(sigcontext) = context->Rsp;
1482 RBP_sig(sigcontext) = context->Rbp;
1483 RSI_sig(sigcontext) = context->Rsi;
1484 RDI_sig(sigcontext) = context->Rdi;
1485 R8_sig(sigcontext) = context->R8;
1486 R9_sig(sigcontext) = context->R9;
1487 R10_sig(sigcontext) = context->R10;
1488 R11_sig(sigcontext) = context->R11;
1489 R12_sig(sigcontext) = context->R12;
1490 R13_sig(sigcontext) = context->R13;
1491 R14_sig(sigcontext) = context->R14;
1492 R15_sig(sigcontext) = context->R15;
1493 RIP_sig(sigcontext) = context->Rip;
1494 CS_sig(sigcontext) = context->SegCs;
1495 FS_sig(sigcontext) = context->SegFs;
1496 GS_sig(sigcontext) = context->SegGs;
1497 EFL_sig(sigcontext) = context->EFlags;
1498 #ifdef DS_sig
1499 DS_sig(sigcontext) = context->SegDs;
1500 #endif
1501 #ifdef ES_sig
1502 ES_sig(sigcontext) = context->SegEs;
1503 #endif
1504 #ifdef SS_sig
1505 SS_sig(sigcontext) = context->SegSs;
1506 #endif
1507 if (FPU_sig(sigcontext)) *FPU_sig(sigcontext) = context->u.FltSave;
1508 }
1509
1510
1511 /**************************************************************************
1512 * __chkstk (NTDLL.@)
1513 *
1514 * Supposed to touch all the stack pages, but we shouldn't need that.
1515 */
1516 __ASM_GLOBAL_FUNC( __chkstk, "ret" );
1517
1518
1519 /***********************************************************************
1520 * RtlCaptureContext (NTDLL.@)
1521 */
1522 __ASM_GLOBAL_FUNC( RtlCaptureContext,
1523 "pushfq\n\t"
1524 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
1525 "movl $0x001000f,0x30(%rcx)\n\t" /* context->ContextFlags */
1526 "stmxcsr 0x34(%rcx)\n\t" /* context->MxCsr */
1527 "movw %cs,0x38(%rcx)\n\t" /* context->SegCs */
1528 "movw %ds,0x3a(%rcx)\n\t" /* context->SegDs */
1529 "movw %es,0x3c(%rcx)\n\t" /* context->SegEs */
1530 "movw %fs,0x3e(%rcx)\n\t" /* context->SegFs */
1531 "movw %gs,0x40(%rcx)\n\t" /* context->SegGs */
1532 "movw %ss,0x42(%rcx)\n\t" /* context->SegSs */
1533 "popq 0x44(%rcx)\n\t" /* context->Eflags */
1534 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
1535 "movq %rax,0x78(%rcx)\n\t" /* context->Rax */
1536 "movq %rcx,0x80(%rcx)\n\t" /* context->Rcx */
1537 "movq %rdx,0x88(%rcx)\n\t" /* context->Rdx */
1538 "movq %rbx,0x90(%rcx)\n\t" /* context->Rbx */
1539 "leaq 8(%rsp),%rax\n\t"
1540 "movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
1541 "movq %rbp,0xa0(%rcx)\n\t" /* context->Rbp */
1542 "movq %rsi,0xa8(%rcx)\n\t" /* context->Rsi */
1543 "movq %rdi,0xb0(%rcx)\n\t" /* context->Rdi */
1544 "movq %r8,0xb8(%rcx)\n\t" /* context->R8 */
1545 "movq %r9,0xc0(%rcx)\n\t" /* context->R9 */
1546 "movq %r10,0xc8(%rcx)\n\t" /* context->R10 */
1547 "movq %r11,0xd0(%rcx)\n\t" /* context->R11 */
1548 "movq %r12,0xd8(%rcx)\n\t" /* context->R12 */
1549 "movq %r13,0xe0(%rcx)\n\t" /* context->R13 */
1550 "movq %r14,0xe8(%rcx)\n\t" /* context->R14 */
1551 "movq %r15,0xf0(%rcx)\n\t" /* context->R15 */
1552 "movq (%rsp),%rax\n\t"
1553 "movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
1554 "fxsave 0x100(%rcx)\n\t" /* context->FtlSave */
1555 "movdqa %xmm0,0x1a0(%rcx)\n\t" /* context->Xmm0 */
1556 "movdqa %xmm1,0x1b0(%rcx)\n\t" /* context->Xmm1 */
1557 "movdqa %xmm2,0x1c0(%rcx)\n\t" /* context->Xmm2 */
1558 "movdqa %xmm3,0x1d0(%rcx)\n\t" /* context->Xmm3 */
1559 "movdqa %xmm4,0x1e0(%rcx)\n\t" /* context->Xmm4 */
1560 "movdqa %xmm5,0x1f0(%rcx)\n\t" /* context->Xmm5 */
1561 "movdqa %xmm6,0x200(%rcx)\n\t" /* context->Xmm6 */
1562 "movdqa %xmm7,0x210(%rcx)\n\t" /* context->Xmm7 */
1563 "movdqa %xmm8,0x220(%rcx)\n\t" /* context->Xmm8 */
1564 "movdqa %xmm9,0x230(%rcx)\n\t" /* context->Xmm9 */
1565 "movdqa %xmm10,0x240(%rcx)\n\t" /* context->Xmm10 */
1566 "movdqa %xmm11,0x250(%rcx)\n\t" /* context->Xmm11 */
1567 "movdqa %xmm12,0x260(%rcx)\n\t" /* context->Xmm12 */
1568 "movdqa %xmm13,0x270(%rcx)\n\t" /* context->Xmm13 */
1569 "movdqa %xmm14,0x280(%rcx)\n\t" /* context->Xmm14 */
1570 "movdqa %xmm15,0x290(%rcx)\n\t" /* context->Xmm15 */
1571 "ret" );
1572
1573 /***********************************************************************
1574 * set_cpu_context
1575 *
1576 * Set the new CPU context.
1577 */
1578 __ASM_GLOBAL_FUNC( set_cpu_context,
1579 "subq $40,%rsp\n\t"
1580 __ASM_CFI(".cfi_adjust_cfa_offset 40\n\t")
1581 "ldmxcsr 0x34(%rdi)\n\t" /* context->MxCsr */
1582 "movw 0x38(%rdi),%ax\n\t" /* context->SegCs */
1583 "movq %rax,8(%rsp)\n\t"
1584 "movw 0x42(%rdi),%ax\n\t" /* context->SegSs */
1585 "movq %rax,32(%rsp)\n\t"
1586 "movq 0x44(%rdi),%rax\n\t" /* context->Eflags */
1587 "movq %rax,16(%rsp)\n\t"
1588 "movq 0x80(%rdi),%rcx\n\t" /* context->Rcx */
1589 "movq 0x88(%rdi),%rdx\n\t" /* context->Rdx */
1590 "movq 0x90(%rdi),%rbx\n\t" /* context->Rbx */
1591 "movq 0x98(%rdi),%rax\n\t" /* context->Rsp */
1592 "movq %rax,24(%rsp)\n\t"
1593 "movq 0xa0(%rdi),%rbp\n\t" /* context->Rbp */
1594 "movq 0xa8(%rdi),%rsi\n\t" /* context->Rsi */
1595 "movq 0xb8(%rdi),%r8\n\t" /* context->R8 */
1596 "movq 0xc0(%rdi),%r9\n\t" /* context->R9 */
1597 "movq 0xc8(%rdi),%r10\n\t" /* context->R10 */
1598 "movq 0xd0(%rdi),%r11\n\t" /* context->R11 */
1599 "movq 0xd8(%rdi),%r12\n\t" /* context->R12 */
1600 "movq 0xe0(%rdi),%r13\n\t" /* context->R13 */
1601 "movq 0xe8(%rdi),%r14\n\t" /* context->R14 */
1602 "movq 0xf0(%rdi),%r15\n\t" /* context->R15 */
1603 "movq 0xf8(%rdi),%rax\n\t" /* context->Rip */
1604 "movq %rax,(%rsp)\n\t"
1605 "fxrstor 0x100(%rdi)\n\t" /* context->FtlSave */
1606 "movdqa 0x1a0(%rdi),%xmm0\n\t" /* context->Xmm0 */
1607 "movdqa 0x1b0(%rdi),%xmm1\n\t" /* context->Xmm1 */
1608 "movdqa 0x1c0(%rdi),%xmm2\n\t" /* context->Xmm2 */
1609 "movdqa 0x1d0(%rdi),%xmm3\n\t" /* context->Xmm3 */
1610 "movdqa 0x1e0(%rdi),%xmm4\n\t" /* context->Xmm4 */
1611 "movdqa 0x1f0(%rdi),%xmm5\n\t" /* context->Xmm5 */
1612 "movdqa 0x200(%rdi),%xmm6\n\t" /* context->Xmm6 */
1613 "movdqa 0x210(%rdi),%xmm7\n\t" /* context->Xmm7 */
1614 "movdqa 0x220(%rdi),%xmm8\n\t" /* context->Xmm8 */
1615 "movdqa 0x230(%rdi),%xmm9\n\t" /* context->Xmm9 */
1616 "movdqa 0x240(%rdi),%xmm10\n\t" /* context->Xmm10 */
1617 "movdqa 0x250(%rdi),%xmm11\n\t" /* context->Xmm11 */
1618 "movdqa 0x260(%rdi),%xmm12\n\t" /* context->Xmm12 */
1619 "movdqa 0x270(%rdi),%xmm13\n\t" /* context->Xmm13 */
1620 "movdqa 0x280(%rdi),%xmm14\n\t" /* context->Xmm14 */
1621 "movdqa 0x290(%rdi),%xmm15\n\t" /* context->Xmm15 */
1622 "movq 0x78(%rdi),%rax\n\t" /* context->Rax */
1623 "movq 0xb0(%rdi),%rdi\n\t" /* context->Rdi */
1624 "iretq" );
1625
1626 /***********************************************************************
1627 * copy_context
1628 *
1629 * Copy a register context according to the flags.
1630 */
1631 void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
1632 {
1633 flags &= ~CONTEXT_AMD64; /* get rid of CPU id */
1634 if (flags & CONTEXT_CONTROL)
1635 {
1636 to->Rbp = from->Rbp;
1637 to->Rip = from->Rip;
1638 to->Rsp = from->Rsp;
1639 to->SegCs = from->SegCs;
1640 to->SegSs = from->SegSs;
1641 to->EFlags = from->EFlags;
1642 }
1643 if (flags & CONTEXT_INTEGER)
1644 {
1645 to->Rax = from->Rax;
1646 to->Rcx = from->Rcx;
1647 to->Rdx = from->Rdx;
1648 to->Rbx = from->Rbx;
1649 to->Rsi = from->Rsi;
1650 to->Rdi = from->Rdi;
1651 to->R8 = from->R8;
1652 to->R9 = from->R9;
1653 to->R10 = from->R10;
1654 to->R11 = from->R11;
1655 to->R12 = from->R12;
1656 to->R13 = from->R13;
1657 to->R14 = from->R14;
1658 to->R15 = from->R15;
1659 }
1660 if (flags & CONTEXT_SEGMENTS)
1661 {
1662 to->SegDs = from->SegDs;
1663 to->SegEs = from->SegEs;
1664 to->SegFs = from->SegFs;
1665 to->SegGs = from->SegGs;
1666 }
1667 if (flags & CONTEXT_FLOATING_POINT)
1668 {
1669 to->MxCsr = from->MxCsr;
1670 to->u.FltSave = from->u.FltSave;
1671 }
1672 if (flags & CONTEXT_DEBUG_REGISTERS)
1673 {
1674 to->Dr0 = from->Dr0;
1675 to->Dr1 = from->Dr1;
1676 to->Dr2 = from->Dr2;
1677 to->Dr3 = from->Dr3;
1678 to->Dr6 = from->Dr6;
1679 to->Dr7 = from->Dr7;
1680 }
1681 }
1682
1683
1684 /***********************************************************************
1685 * context_to_server
1686 *
1687 * Convert a register context to the server format.
1688 */
1689 NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
1690 {
1691 DWORD flags = from->ContextFlags & ~CONTEXT_AMD64; /* get rid of CPU id */
1692
1693 memset( to, 0, sizeof(*to) );
1694 to->cpu = CPU_x86_64;
1695
1696 if (flags & CONTEXT_CONTROL)
1697 {
1698 to->flags |= SERVER_CTX_CONTROL;
1699 to->ctl.x86_64_regs.rbp = from->Rbp;
1700 to->ctl.x86_64_regs.rip = from->Rip;
1701 to->ctl.x86_64_regs.rsp = from->Rsp;
1702 to->ctl.x86_64_regs.cs = from->SegCs;
1703 to->ctl.x86_64_regs.ss = from->SegSs;
1704 to->ctl.x86_64_regs.flags = from->EFlags;
1705 }
1706 if (flags & CONTEXT_INTEGER)
1707 {
1708 to->flags |= SERVER_CTX_INTEGER;
1709 to->integer.x86_64_regs.rax = from->Rax;
1710 to->integer.x86_64_regs.rcx = from->Rcx;
1711 to->integer.x86_64_regs.rdx = from->Rdx;
1712 to->integer.x86_64_regs.rbx = from->Rbx;
1713 to->integer.x86_64_regs.rsi = from->Rsi;
1714 to->integer.x86_64_regs.rdi = from->Rdi;
1715 to->integer.x86_64_regs.r8 = from->R8;
1716 to->integer.x86_64_regs.r9 = from->R9;
1717 to->integer.x86_64_regs.r10 = from->R10;
1718 to->integer.x86_64_regs.r11 = from->R11;
1719 to->integer.x86_64_regs.r12 = from->R12;
1720 to->integer.x86_64_regs.r13 = from->R13;
1721 to->integer.x86_64_regs.r14 = from->R14;
1722 to->integer.x86_64_regs.r15 = from->R15;
1723 }
1724 if (flags & CONTEXT_SEGMENTS)
1725 {
1726 to->flags |= SERVER_CTX_SEGMENTS;
1727 to->seg.x86_64_regs.ds = from->SegDs;
1728 to->seg.x86_64_regs.es = from->SegEs;
1729 to->seg.x86_64_regs.fs = from->SegFs;
1730 to->seg.x86_64_regs.gs = from->SegGs;
1731 }
1732 if (flags & CONTEXT_FLOATING_POINT)
1733 {
1734 to->flags |= SERVER_CTX_FLOATING_POINT;
1735 memcpy( to->fp.x86_64_regs.fpregs, &from->u.FltSave, sizeof(to->fp.x86_64_regs.fpregs) );
1736 }
1737 if (flags & CONTEXT_DEBUG_REGISTERS)
1738 {
1739 to->flags |= SERVER_CTX_DEBUG_REGISTERS;
1740 to->debug.x86_64_regs.dr0 = from->Dr0;
1741 to->debug.x86_64_regs.dr1 = from->Dr1;
1742 to->debug.x86_64_regs.dr2 = from->Dr2;
1743 to->debug.x86_64_regs.dr3 = from->Dr3;
1744 to->debug.x86_64_regs.dr6 = from->Dr6;
1745 to->debug.x86_64_regs.dr7 = from->Dr7;
1746 }
1747 return STATUS_SUCCESS;
1748 }
1749
1750
1751 /***********************************************************************
1752 * context_from_server
1753 *
1754 * Convert a register context from the server format.
1755 */
1756 NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
1757 {
1758 if (from->cpu != CPU_x86_64) return STATUS_INVALID_PARAMETER;
1759
1760 to->ContextFlags = CONTEXT_AMD64;
1761 if (from->flags & SERVER_CTX_CONTROL)
1762 {
1763 to->ContextFlags |= CONTEXT_CONTROL;
1764 to->Rbp = from->ctl.x86_64_regs.rbp;
1765 to->Rip = from->ctl.x86_64_regs.rip;
1766 to->Rsp = from->ctl.x86_64_regs.rsp;
1767 to->SegCs = from->ctl.x86_64_regs.cs;
1768 to->SegSs = from->ctl.x86_64_regs.ss;
1769 to->EFlags = from->ctl.x86_64_regs.flags;
1770 }
1771
1772 if (from->flags & SERVER_CTX_INTEGER)
1773 {
1774 to->ContextFlags |= CONTEXT_INTEGER;
1775 to->Rax = from->integer.x86_64_regs.rax;
1776 to->Rcx = from->integer.x86_64_regs.rcx;
1777 to->Rdx = from->integer.x86_64_regs.rdx;
1778 to->Rbx = from->integer.x86_64_regs.rbx;
1779 to->Rsi = from->integer.x86_64_regs.rsi;
1780 to->Rdi = from->integer.x86_64_regs.rdi;
1781 to->R8 = from->integer.x86_64_regs.r8;
1782 to->R9 = from->integer.x86_64_regs.r9;
1783 to->R10 = from->integer.x86_64_regs.r10;
1784 to->R11 = from->integer.x86_64_regs.r11;
1785 to->R12 = from->integer.x86_64_regs.r12;
1786 to->R13 = from->integer.x86_64_regs.r13;
1787 to->R14 = from->integer.x86_64_regs.r14;
1788 to->R15 = from->integer.x86_64_regs.r15;
1789 }
1790 if (from->flags & SERVER_CTX_SEGMENTS)
1791 {
1792 to->ContextFlags |= CONTEXT_SEGMENTS;
1793 to->SegDs = from->seg.x86_64_regs.ds;
1794 to->SegEs = from->seg.x86_64_regs.es;
1795 to->SegFs = from->seg.x86_64_regs.fs;
1796 to->SegGs = from->seg.x86_64_regs.gs;
1797 }
1798 if (from->flags & SERVER_CTX_FLOATING_POINT)
1799 {
1800 to->ContextFlags |= CONTEXT_FLOATING_POINT;
1801 memcpy( &to->u.FltSave, from->fp.x86_64_regs.fpregs, sizeof(from->fp.x86_64_regs.fpregs) );
1802 to->MxCsr = to->u.FltSave.MxCsr;
1803 }
1804 if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
1805 {
1806 to->ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1807 to->Dr0 = from->debug.x86_64_regs.dr0;
1808 to->Dr1 = from->debug.x86_64_regs.dr1;
1809 to->Dr2 = from->debug.x86_64_regs.dr2;
1810 to->Dr3 = from->debug.x86_64_regs.dr3;
1811 to->Dr6 = from->debug.x86_64_regs.dr6;
1812 to->Dr7 = from->debug.x86_64_regs.dr7;
1813 }
1814 return STATUS_SUCCESS;
1815 }
1816
1817
1818 extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
1819 __ASM_GLOBAL_FUNC( raise_func_trampoline,
1820 __ASM_CFI(".cfi_signal_frame\n\t")
1821 __ASM_CFI(".cfi_def_cfa %rbp,144\n\t") /* red zone + rip + rbp */
1822 __ASM_CFI(".cfi_rel_offset %rip,8\n\t")
1823 __ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
1824 "call *%rdx\n\t"
1825 "int $3")
1826
1827 /***********************************************************************
1828 * setup_exception
1829 *
1830 * Setup a proper stack frame for the raise function, and modify the
1831 * sigcontext so that the return from the signal handler will call
1832 * the raise function.
1833 */
1834 static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func func )
1835 {
1836 struct stack_layout
1837 {
1838 CONTEXT context;
1839 EXCEPTION_RECORD rec;
1840 ULONG64 rbp;
1841 ULONG64 rip;
1842 ULONG64 red_zone[16];
1843 } *stack;
1844 ULONG64 *rsp_ptr;
1845 DWORD exception_code = 0;
1846
1847 stack = (struct stack_layout *)(RSP_sig(sigcontext) & ~15);
1848
1849 /* stack sanity checks */
1850
1851 if (is_inside_signal_stack( stack ))
1852 {
1853 ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1854 GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
1855 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1856 abort_thread(1);
1857 }
1858
1859 if (stack - 1 > stack || /* check for overflow in subtraction */
1860 (char *)stack <= (char *)NtCurrentTeb()->DeallocationStack ||
1861 (char *)stack > (char *)NtCurrentTeb()->Tib.StackBase)
1862 {
1863 WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1864 GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
1865 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1866 }
1867 else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->DeallocationStack + 4096)
1868 {
1869 /* stack overflow on last page, unrecoverable */
1870 UINT diff = (char *)NtCurrentTeb()->DeallocationStack + 4096 - (char *)(stack - 1);
1871 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1872 diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
1873 (ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
1874 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1875 abort_thread(1);
1876 }
1877 else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->Tib.StackLimit)
1878 {
1879 /* stack access below stack limit, may be recoverable */
1880 if (virtual_handle_stack_fault( stack - 1 )) exception_code = EXCEPTION_STACK_OVERFLOW;
1881 else
1882 {
1883 UINT diff = (char *)NtCurrentTeb()->Tib.StackLimit - (char *)(stack - 1);
1884 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1885 diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
1886 (ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
1887 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1888 abort_thread(1);
1889 }
1890 }
1891
1892 stack--; /* push the stack_layout structure */
1893 #if defined(VALGRIND_MAKE_MEM_UNDEFINED)
1894 VALGRIND_MAKE_MEM_UNDEFINED(stack, sizeof(*stack));
1895 #elif defined(VALGRIND_MAKE_WRITABLE)
1896 VALGRIND_MAKE_WRITABLE(stack, sizeof(*stack));
1897 #endif
1898 stack->rec.ExceptionRecord = NULL;
1899 stack->rec.ExceptionCode = exception_code;
1900 stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
1901 stack->rec.ExceptionAddress = (void *)RIP_sig(sigcontext);
1902 stack->rec.NumberParameters = 0;
1903 save_context( &stack->context, sigcontext );
1904
1905 /* store return address and %rbp without aligning, so that the offset is fixed */
1906 rsp_ptr = (ULONG64 *)RSP_sig(sigcontext) - 16;
1907 *(--rsp_ptr) = RIP_sig(sigcontext);
1908 *(--rsp_ptr) = RBP_sig(sigcontext);
1909
1910 /* now modify the sigcontext to return to the raise function */
1911 RIP_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline;
1912 RDI_sig(sigcontext) = (ULONG_PTR)&stack->rec;
1913 RSI_sig(sigcontext) = (ULONG_PTR)&stack->context;
1914 RDX_sig(sigcontext) = (ULONG_PTR)func;
1915 RBP_sig(sigcontext) = (ULONG_PTR)rsp_ptr;
1916 RSP_sig(sigcontext) = (ULONG_PTR)stack;
1917 /* clear single-step, direction, and align check flag */
1918 EFL_sig(sigcontext) &= ~(0x100|0x400|0x40000);
1919
1920 return &stack->rec;
1921 }
1922
1923
1924 /**********************************************************************
1925 * find_function_info
1926 */
1927 static RUNTIME_FUNCTION *find_function_info( ULONG64 pc, HMODULE module,
1928 RUNTIME_FUNCTION *func, ULONG size )
1929 {
1930 int min = 0;
1931 int max = size/sizeof(*func) - 1;
1932
1933 while (min <= max)
1934 {
1935 int pos = (min + max) / 2;
1936 if ((char *)pc < (char *)module + func[pos].BeginAddress) max = pos - 1;
1937 else if ((char *)pc >= (char *)module + func[pos].EndAddress) min = pos + 1;
1938 else
1939 {
1940 func += pos;
1941 while (func->UnwindData & 1) /* follow chained entry */
1942 func = (RUNTIME_FUNCTION *)((char *)module + (func->UnwindData & ~1));
1943 return func;
1944 }
1945 }
1946 return NULL;
1947 }
1948
1949 /**********************************************************************
1950 * lookup_function_info
1951 */
1952 static RUNTIME_FUNCTION *lookup_function_info( ULONG64 pc, ULONG64 *base, LDR_MODULE **module )
1953 {
1954 RUNTIME_FUNCTION *func = NULL;
1955 struct dynamic_unwind_entry *entry;
1956 ULONG size;
1957
1958 /* PE module or wine module */
1959 if (!LdrFindEntryForAddress( (void *)pc, module ))
1960 {
1961 *base = (ULONG64)(*module)->BaseAddress;
1962 if ((func = RtlImageDirectoryEntryToData( (*module)->BaseAddress, TRUE,
1963 IMAGE_DIRECTORY_ENTRY_EXCEPTION, &size )))
1964 {
1965 /* lookup in function table */
1966 func = find_function_info( pc, (*module)->BaseAddress, func, size );
1967 }
1968 }
1969 else
1970 {
1971 *module = NULL;
1972
1973 RtlEnterCriticalSection( &dynamic_unwind_section );
1974 LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
1975 {
1976 if (pc >= entry->base && pc < entry->base + entry->size)
1977 {
1978 *base = entry->base;
1979
1980 /* use callback or lookup in function table */
1981 if (entry->callback)
1982 func = entry->callback( pc, entry->context );
1983 else
1984 func = find_function_info( pc, (HMODULE)entry->base, entry->table, entry->table_size );
1985 break;
1986 }
1987 }
1988 RtlLeaveCriticalSection( &dynamic_unwind_section );
1989 }
1990
1991 return func;
1992 }
1993
1994 /**********************************************************************
1995 * call_handler
1996 *
1997 * Call a single exception handler.
1998 * FIXME: Handle nested exceptions.
1999 */
2000 static NTSTATUS call_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch, CONTEXT *orig_context )
2001 {
2002 DWORD res;
2003
2004 dispatch->ControlPc = dispatch->ContextRecord->Rip;
2005
2006 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2007 dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2008 res = dispatch->LanguageHandler( rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2009 TRACE( "handler at %p returned %u\n", dispatch->LanguageHandler, res );
2010
2011 switch (res)
2012 {
2013 case ExceptionContinueExecution:
2014 if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
2015 *orig_context = *dispatch->ContextRecord;
2016 return STATUS_SUCCESS;
2017 case ExceptionContinueSearch:
2018 break;
2019 case ExceptionNestedException:
2020 break;
2021 default:
2022 return STATUS_INVALID_DISPOSITION;
2023 }
2024 return STATUS_UNHANDLED_EXCEPTION;
2025 }
2026
2027
2028 /**********************************************************************
2029 * call_teb_handler
2030 *
2031 * Call a single exception handler from the TEB chain.
2032 * FIXME: Handle nested exceptions.
2033 */
2034 static NTSTATUS call_teb_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
2035 EXCEPTION_REGISTRATION_RECORD *teb_frame, CONTEXT *orig_context )
2036 {
2037 EXCEPTION_REGISTRATION_RECORD *dispatcher;
2038 DWORD res;
2039
2040 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
2041 teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, &dispatcher );
2042 res = teb_frame->Handler( rec, teb_frame, dispatch->ContextRecord, &dispatcher );
2043 TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
2044
2045 switch (res)
2046 {
2047 case ExceptionContinueExecution:
2048 if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
2049 *orig_context = *dispatch->ContextRecord;
2050 return STATUS_SUCCESS;
2051 case ExceptionContinueSearch:
2052 break;
2053 case ExceptionNestedException:
2054 break;
2055 default:
2056 return STATUS_INVALID_DISPOSITION;
2057 }
2058 return STATUS_UNHANDLED_EXCEPTION;
2059 }
2060
2061
2062 /**********************************************************************
2063 * call_stack_handlers
2064 *
2065 * Call the stack handlers chain.
2066 */
2067 static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_context )
2068 {
2069 EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
2070 UNWIND_HISTORY_TABLE table;
2071 DISPATCHER_CONTEXT dispatch;
2072 CONTEXT context, new_context;
2073 LDR_MODULE *module;
2074 NTSTATUS status;
2075
2076 context = *orig_context;
2077 dispatch.TargetIp = 0;
2078 dispatch.ContextRecord = &context;
2079 dispatch.HistoryTable = &table;
2080 dispatch.ScopeIndex = 0; /* FIXME */
2081 for (;;)
2082 {
2083 new_context = context;
2084
2085 /* FIXME: should use the history table to make things faster */
2086
2087 dispatch.ImageBase = 0;
2088
2089 /* first look for PE exception information */
2090
2091 if ((dispatch.FunctionEntry = lookup_function_info( context.Rip, &dispatch.ImageBase, &module )))
2092 {
2093 dispatch.LanguageHandler = RtlVirtualUnwind( UNW_FLAG_EHANDLER, dispatch.ImageBase,
2094 context.Rip, dispatch.FunctionEntry,
2095 &new_context, &dispatch.HandlerData,
2096 &dispatch.EstablisherFrame, NULL );
2097 goto unwind_done;
2098 }
2099
2100 /* then look for host system exception information */
2101
2102 if (!module || (module->Flags & LDR_WINE_INTERNAL))
2103 {
2104 struct dwarf_eh_bases bases;
2105 const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context.Rip - 1), &bases );
2106
2107 if (fde)
2108 {
2109 status = dwarf_virtual_unwind( context.Rip, &dispatch.EstablisherFrame, &new_context,
2110 fde, &bases, &dispatch.LanguageHandler, &dispatch.HandlerData );
2111 if (status != STATUS_SUCCESS) return status;
2112 dispatch.FunctionEntry = NULL;
2113 if (dispatch.LanguageHandler && !module)
2114 {
2115 FIXME( "calling personality routine in system library not supported yet\n" );
2116 dispatch.LanguageHandler = NULL;
2117 }
2118 goto unwind_done;
2119 }
2120 }
2121 else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
2122
2123 /* no exception information, treat as a leaf function */
2124
2125 new_context.Rip = *(ULONG64 *)context.Rsp;
2126 new_context.Rsp = context.Rsp + sizeof(ULONG64);
2127 dispatch.EstablisherFrame = new_context.Rsp;
2128 dispatch.LanguageHandler = NULL;
2129
2130 unwind_done:
2131 if (!dispatch.EstablisherFrame) break;
2132
2133 if ((dispatch.EstablisherFrame & 7) ||
2134 dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
2135 dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)
2136 {
2137 ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
2138 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
2139 rec->ExceptionFlags |= EH_STACK_INVALID;
2140 break;
2141 }
2142
2143 if (dispatch.LanguageHandler)
2144 {
2145 status = call_handler( rec, &dispatch, orig_context );
2146 if (status != STATUS_UNHANDLED_EXCEPTION) return status;
2147 }
2148 /* hack: call wine handlers registered in the tib list */
2149 else while ((ULONG64)teb_frame < new_context.Rsp)
2150 {
2151 TRACE( "found wine frame %p rsp %lx handler %p\n",
2152 teb_frame, new_context.Rsp, teb_frame->Handler );
2153 dispatch.EstablisherFrame = (ULONG64)teb_frame;
2154 context = *orig_context;
2155 status = call_teb_handler( rec, &dispatch, teb_frame, orig_context );
2156 if (status != STATUS_UNHANDLED_EXCEPTION) return status;
2157 teb_frame = teb_frame->Prev;
2158 }
2159
2160 if (new_context.Rsp == (ULONG64)NtCurrentTeb()->Tib.StackBase) break;
2161 context = new_context;
2162 }
2163 return STATUS_UNHANDLED_EXCEPTION;
2164 }
2165
2166
2167 /*******************************************************************
2168 * raise_exception
2169 *
2170 * Implementation of NtRaiseException.
2171 */
2172 static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
2173 {
2174 NTSTATUS status;
2175
2176 if (first_chance)
2177 {
2178 DWORD c;
2179
2180 TRACE( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
2181 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
2182 context->Rip, GetCurrentThreadId() );
2183 for (c = 0; c < min( EXCEPTION_MAXIMUM_PARAMETERS, rec->NumberParameters ); c++)
2184 TRACE( " info[%d]=%016lx\n", c, rec->ExceptionInformation[c] );
2185 if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
2186 {
2187 if (rec->ExceptionInformation[1] >> 16)
2188 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
2189 rec->ExceptionAddress,
2190 (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
2191 else
2192 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
2193 rec->ExceptionAddress,
2194 (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
2195 }
2196 else
2197 {
2198 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
2199 context->Rax, context->Rbx, context->Rcx, context->Rdx );
2200 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
2201 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
2202 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
2203 context->R8, context->R9, context->R10, context->R11 );
2204 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
2205 context->R12, context->R13, context->R14, context->R15 );
2206 }
2207 status = send_debug_event( rec, TRUE, context );
2208 if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
2209 return STATUS_SUCCESS;
2210
2211 if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
2212 return STATUS_SUCCESS;
2213
2214 if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
2215 return status;
2216 }
2217
2218 /* last chance exception */
2219
2220 status = send_debug_event( rec, FALSE, context );
2221 if (status != DBG_CONTINUE)
2222 {
2223 if (rec->ExceptionFlags & EH_STACK_INVALID)
2224 ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
2225 else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
2226 ERR("Process attempted to continue execution after noncontinuable exception.\n");
2227 else
2228 ERR("Unhandled exception code %x flags %x addr %p\n",
2229 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
2230 NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
2231 }
2232 return STATUS_SUCCESS;
2233 }
2234
2235
2236 /**********************************************************************
2237 * raise_segv_exception
2238 */
2239 static void raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
2240 {
2241 NTSTATUS status;
2242
2243 switch(rec->ExceptionCode)
2244 {
2245 case EXCEPTION_ACCESS_VIOLATION:
2246 if (rec->NumberParameters == 2)
2247 {
2248 if (!(rec->ExceptionCode = virtual_handle_fault( (void *)rec->ExceptionInformation[1],
2249 rec->ExceptionInformation[0] )))
2250 set_cpu_context( context );
2251 }
2252 break;
2253 }
2254 status = raise_exception( rec, context, TRUE );
2255 if (status) raise_status( status, rec );
2256 set_cpu_context( context );
2257 }
2258
2259
2260 /**********************************************************************
2261 * raise_generic_exception
2262 *
2263 * Generic raise function for exceptions that don't need special treatment.
2264 */
2265 static void raise_generic_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
2266 {
2267 NTSTATUS status = raise_exception( rec, context, TRUE );
2268 if (status) raise_status( status, rec );
2269 set_cpu_context( context );
2270 }
2271
2272
2273 /**********************************************************************
2274 * segv_handler
2275 *
2276 * Handler for SIGSEGV and related errors.
2277 */
2278 static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2279 {
2280 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_segv_exception );
2281 ucontext_t *ucontext = sigcontext;
2282
2283 switch(TRAP_sig(ucontext))
2284 {
2285 case TRAP_x86_OFLOW: /* Overflow exception */
2286 rec->ExceptionCode = EXCEPTION_INT_OVERFLOW;
2287 break;
2288 case TRAP_x86_BOUND: /* Bound range exception */
2289 rec->ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
2290 break;
2291 case TRAP_x86_PRIVINFLT: /* Invalid opcode exception */
2292 rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
2293 break;
2294 case TRAP_x86_STKFLT: /* Stack fault */
2295 rec->ExceptionCode = EXCEPTION_STACK_OVERFLOW;
2296 break;
2297 case TRAP_x86_SEGNPFLT: /* Segment not present exception */
2298 case TRAP_x86_PROTFLT: /* General protection fault */
2299 case TRAP_x86_UNKNOWN: /* Unknown fault code */
2300 rec->ExceptionCode = ERROR_sig(ucontext) ? EXCEPTION_ACCESS_VIOLATION : EXCEPTION_PRIV_INSTRUCTION;
2301 rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
2302 break;
2303 case TRAP_x86_PAGEFLT: /* Page fault */
2304 rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
2305 rec->NumberParameters = 2;
2306 rec->ExceptionInformation[0] = (ERROR_sig(ucontext) & 2) != 0;
2307 rec->ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
2308 break;
2309 case TRAP_x86_ALIGNFLT: /* Alignment check exception */
2310 rec->ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
2311 break;
2312 default:
2313 ERR( "Got unexpected trap %ld\n", (ULONG_PTR)TRAP_sig(ucontext) );
2314 /* fall through */
2315 case TRAP_x86_NMI: /* NMI interrupt */
2316 case TRAP_x86_DNA: /* Device not available exception */
2317 case TRAP_x86_DOUBLEFLT: /* Double fault exception */
2318 case TRAP_x86_TSSFLT: /* Invalid TSS exception */
2319 case TRAP_x86_MCHK: /* Machine check exception */
2320 case TRAP_x86_CACHEFLT: /* Cache flush exception */
2321 rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
2322 break;
2323 }
2324 }
2325
2326 /**********************************************************************
2327 * trap_handler
2328 *
2329 * Handler for SIGTRAP.
2330 */
2331 static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2332 {
2333 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2334
2335 switch (siginfo->si_code)
2336 {
2337 case TRAP_TRACE: /* Single-step exception */
2338 case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
2339 rec->ExceptionCode = EXCEPTION_SINGLE_STEP;
2340 break;
2341 case TRAP_BRKPT: /* Breakpoint exception */
2342 rec->ExceptionAddress = (char *)rec->ExceptionAddress - 1; /* back up over the int3 instruction */
2343 /* fall through */
2344 default:
2345 rec->ExceptionCode = EXCEPTION_BREAKPOINT;
2346 break;
2347 }
2348 }
2349
2350 /**********************************************************************
2351 * fpe_handler
2352 *
2353 * Handler for SIGFPE.
2354 */
2355 static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2356 {
2357 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2358
2359 switch (siginfo->si_code)
2360 {
2361 case FPE_FLTSUB:
2362 rec->ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
2363 break;
2364 case FPE_INTDIV:
2365 rec->ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
2366 break;
2367 case FPE_INTOVF:
2368 rec->ExceptionCode = EXCEPTION_INT_OVERFLOW;
2369 break;
2370 case FPE_FLTDIV:
2371 rec->ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
2372 break;
2373 case FPE_FLTOVF:
2374 rec->ExceptionCode = EXCEPTION_FLT_OVERFLOW;
2375 break;
2376 case FPE_FLTUND:
2377 rec->ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
2378 break;
2379 case FPE_FLTRES:
2380 rec->ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
2381 break;
2382 case FPE_FLTINV:
2383 default:
2384 rec->ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
2385 break;
2386 }
2387 }
2388
2389 /**********************************************************************
2390 * int_handler
2391 *
2392 * Handler for SIGINT.
2393 */
2394 static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2395 {
2396 if (!dispatch_signal(SIGINT))
2397 {
2398 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2399 rec->ExceptionCode = CONTROL_C_EXIT;
2400 }
2401 }
2402
2403
2404 /**********************************************************************
2405 * abrt_handler
2406 *
2407 * Handler for SIGABRT.
2408 */
2409 static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2410 {
2411 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2412 rec->ExceptionCode = EXCEPTION_WINE_ASSERTION;
2413 rec->ExceptionFlags = EH_NONCONTINUABLE;
2414 }
2415
2416
2417 /**********************************************************************
2418 * quit_handler
2419 *
2420 * Handler for SIGQUIT.
2421 */
2422 static void quit_handler( int signal, siginfo_t *siginfo, void *ucontext )
2423 {
2424 abort_thread(0);
2425 }
2426
2427
2428 /**********************************************************************
2429 * usr1_handler
2430 *
2431 * Handler for SIGUSR1, used to signal a thread that it got suspended.
2432 */
2433 static void usr1_handler( int signal, siginfo_t *siginfo, void *ucontext )
2434 {
2435 CONTEXT context;
2436
2437 save_context( &context, ucontext );
2438 wait_suspend( &context );
2439 restore_context( &context, ucontext );
2440 }
2441
2442
2443 /***********************************************************************
2444 * __wine_set_signal_handler (NTDLL.@)
2445 */
2446 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
2447 {
2448 if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
2449 if (handlers[sig] != NULL) return -2;
2450 handlers[sig] = wsh;
2451 return 0;
2452 }
2453
2454
2455 /**********************************************************************
2456 * signal_alloc_thread
2457 */
2458 NTSTATUS signal_alloc_thread( TEB **teb )
2459 {
2460 static size_t sigstack_zero_bits;
2461 SIZE_T size;
2462 NTSTATUS status;
2463
2464 if (!sigstack_zero_bits)
2465 {
2466 size_t min_size = teb_size + max( MINSIGSTKSZ, 8192 );
2467 /* find the first power of two not smaller than min_size */
2468 sigstack_zero_bits = 12;
2469 while ((1u << sigstack_zero_bits) < min_size) sigstack_zero_bits++;
2470 signal_stack_size = (1 << sigstack_zero_bits) - teb_size;
2471 assert( sizeof(TEB) <= teb_size );
2472 }
2473
2474 size = 1 << sigstack_zero_bits;
2475 *teb = NULL;
2476 if (!(status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb, sigstack_zero_bits,
2477 &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
2478 {
2479 (*teb)->Tib.Self = &(*teb)->Tib;
2480 (*teb)->Tib.ExceptionList = (void *)~0UL;
2481 }
2482 return status;
2483 }
2484
2485
2486 /**********************************************************************
2487 * signal_free_thread
2488 */
2489 void signal_free_thread( TEB *teb )
2490 {
2491 SIZE_T size;
2492
2493 if (teb->DeallocationStack)
2494 {
2495 size = 0;
2496 NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
2497 }
2498 size = 0;
2499 NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
2500 }
2501
2502
2503 /**********************************************************************
2504 * signal_init_thread
2505 */
2506 void signal_init_thread( TEB *teb )
2507 {
2508 const WORD fpu_cw = 0x27f;
2509 stack_t ss;
2510
2511 #if defined __linux__
2512 arch_prctl( ARCH_SET_GS, teb );
2513 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
2514 amd64_set_gsbase( teb );
2515 #elif defined(__NetBSD__)
2516 sysarch( X86_64_SET_GSBASE, &teb );
2517 #else
2518 # error Please define setting %gs for your architecture
2519 #endif
2520
2521 ss.ss_sp = (char *)teb + teb_size;
2522 ss.ss_size = signal_stack_size;
2523 ss.ss_flags = 0;
2524 if (sigaltstack(&ss, NULL) == -1) perror( "sigaltstack" );
2525
2526 #ifdef __GNUC__
2527 __asm__ volatile ("fninit; fldcw %0" : : "m" (fpu_cw));
2528 #else
2529 FIXME("FPU setup not implemented for this platform.\n");
2530 #endif
2531 }
2532
2533 /**********************************************************************
2534 * signal_init_process
2535 */
2536 void signal_init_process(void)
2537 {
2538 struct sigaction sig_act;
2539
2540 sig_act.sa_mask = server_block_set;
2541 sig_act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
2542
2543 sig_act.sa_sigaction = int_handler;
2544 if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
2545 sig_act.sa_sigaction = fpe_handler;
2546 if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
2547 sig_act.sa_sigaction = abrt_handler;
2548 if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
2549 sig_act.sa_sigaction = quit_handler;
2550 if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
2551 sig_act.sa_sigaction = usr1_handler;
2552 if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
2553
2554 sig_act.sa_sigaction = segv_handler;
2555 if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
2556 if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
2557 #ifdef SIGBUS
2558 if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
2559 #endif
2560
2561 #ifdef SIGTRAP
2562 sig_act.sa_sigaction = trap_handler;
2563 if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
2564 #endif
2565 return;
2566
2567 error:
2568 perror("sigaction");
2569 exit(1);
2570 }
2571
2572
2573 /**********************************************************************
2574 * RtlAddFunctionTable (NTDLL.@)
2575 */
2576 BOOLEAN CDECL RtlAddFunctionTable( RUNTIME_FUNCTION *table, DWORD count, DWORD64 addr )
2577 {
2578 struct dynamic_unwind_entry *entry;
2579
2580 TRACE( "%p %u %lx\n", table, count, addr );
2581
2582 /* NOTE: Windows doesn't check if table is aligned or a NULL pointer */
2583
2584 entry = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry) );
2585 if (!entry)
2586 return FALSE;
2587
2588 entry->base = addr;
2589 entry->size = table[count - 1].EndAddress;
2590 entry->table = table;
2591 entry->table_size = count * sizeof(RUNTIME_FUNCTION);
2592 entry->callback = NULL;
2593 entry->context = NULL;
2594
2595 RtlEnterCriticalSection( &dynamic_unwind_section );
2596 list_add_tail( &dynamic_unwind_list, &entry->entry );
2597 RtlLeaveCriticalSection( &dynamic_unwind_section );
2598
2599 return TRUE;
2600 }
2601
2602
2603 /**********************************************************************
2604 * RtlInstallFunctionTableCallback (NTDLL.@)
2605 */
2606 BOOLEAN CDECL RtlInstallFunctionTableCallback( DWORD64 table, DWORD64 base, DWORD length,
2607 PGET_RUNTIME_FUNCTION_CALLBACK callback, PVOID context, PCWSTR dll )
2608 {
2609 struct dynamic_unwind_entry *entry;
2610
2611 TRACE( "%lx %lx %d %p %p %s\n", table, base, length, callback, context, wine_dbgstr_w(dll) );
2612
2613 /* NOTE: Windows doesn't check if the provided callback is a NULL pointer */
2614
2615 /* both low-order bits must be set */
2616 if ((table & 0x3) != 0x3)
2617 return FALSE;
2618
2619 entry = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry) );
2620 if (!entry)
2621 return FALSE;
2622
2623 entry->base = base;
2624 entry->size = length;
2625 entry->table = (RUNTIME_FUNCTION *)table;
2626 entry->table_size = 0;
2627 entry->callback = callback;
2628 entry->context = context;
2629
2630 RtlEnterCriticalSection( &dynamic_unwind_section );
2631 list_add_tail( &dynamic_unwind_list, &entry->entry );
2632 RtlLeaveCriticalSection( &dynamic_unwind_section );
2633
2634 return TRUE;
2635 }
2636
2637
2638 /**********************************************************************
2639 * RtlDeleteFunctionTable (NTDLL.@)
2640 */
2641 BOOLEAN CDECL RtlDeleteFunctionTable( RUNTIME_FUNCTION *table )
2642 {
2643 struct dynamic_unwind_entry *entry, *to_free = NULL;
2644
2645 TRACE( "%p\n", table );
2646
2647 RtlEnterCriticalSection( &dynamic_unwind_section );
2648 LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
2649 {
2650 if (entry->table == table)
2651 {
2652 to_free = entry;
2653 list_remove( &entry->entry );
2654 break;
2655 }
2656 }
2657 RtlLeaveCriticalSection( &dynamic_unwind_section );
2658
2659 if (!to_free)
2660 return FALSE;
2661
2662 RtlFreeHeap( GetProcessHeap(), 0, to_free );
2663 return TRUE;
2664 }
2665
2666
2667 /**********************************************************************
2668 * RtlLookupFunctionEntry (NTDLL.@)
2669 */
2670 PRUNTIME_FUNCTION WINAPI RtlLookupFunctionEntry( ULONG64 pc, ULONG64 *base, UNWIND_HISTORY_TABLE *table )
2671 {
2672 LDR_MODULE *module;
2673 RUNTIME_FUNCTION *func;
2674
2675 /* FIXME: should use the history table to make things faster */
2676
2677 func = lookup_function_info( pc, base, &module );
2678 if (!func)
2679 {
2680 *base = 0;
2681 if (module)
2682 WARN( "no exception table found in module %p pc %lx\n", module->BaseAddress, pc );
2683 else
2684 WARN( "module not found for %lx\n", pc );
2685 }
2686
2687 return func;
2688 }
2689
2690 static ULONG64 get_int_reg( CONTEXT *context, int reg )
2691 {
2692 return *(&context->Rax + reg);
2693 }
2694
2695 static void set_int_reg( CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr, int reg, ULONG64 val )
2696 {
2697 *(&context->Rax + reg) = val;
2698 if (ctx_ptr) ctx_ptr->u2.IntegerContext[reg] = &context->Rax + reg;
2699 }
2700
2701 static void set_float_reg( CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr, int reg, M128A val )
2702 {
2703 *(&context->u.s.Xmm0 + reg) = val;
2704 if (ctx_ptr) ctx_ptr->u.FloatingContext[reg] = &context->u.s.Xmm0 + reg;
2705 }
2706
2707 static int get_opcode_size( struct opcode op )
2708 {
2709 switch (op.code)
2710 {
2711 case UWOP_ALLOC_LARGE:
2712 return 2 + (op.info != 0);
2713 case UWOP_SAVE_NONVOL:
2714 case UWOP_SAVE_XMM128:
2715 return 2;
2716 case UWOP_SAVE_NONVOL_FAR:
2717 case UWOP_SAVE_XMM128_FAR:
2718 return 3;
2719 default:
2720 return 1;
2721 }
2722 }
2723
2724 static BOOL is_inside_epilog( BYTE *pc, ULONG64 base, const RUNTIME_FUNCTION *function )
2725 {
2726 /* add or lea must be the first instruction, and it must have a rex.W prefix */
2727 if ((pc[0] & 0xf8) == 0x48)
2728 {
2729 switch (pc[1])
2730 {
2731 case 0x81: /* add $nnnn,%rsp */
2732 if (pc[0] == 0x48 && pc[2] == 0xc4)
2733 {
2734 pc += 7;
2735 break;
2736 }
2737 return FALSE;
2738 case 0x83: /* add $n,%rsp */
2739 if (pc[0] == 0x48 && pc[2] == 0xc4)
2740 {
2741 pc += 4;
2742 break;
2743 }
2744 return FALSE;
2745 case 0x8d: /* lea n(reg),%rsp */
2746 if (pc[0] & 0x06) return FALSE; /* rex.RX must be cleared */
2747 if (((pc[2] >> 3) & 7) != 4) return FALSE; /* dest reg mus be %rsp */
2748 if ((pc[2] & 7) == 4) return FALSE; /* no SIB byte allowed */
2749 if ((pc[2] >> 6) == 1) /* 8-bit offset */
2750 {
2751 pc += 4;
2752 break;
2753 }
2754 if ((pc[2] >> 6) == 2) /* 32-bit offset */
2755 {
2756 pc += 7;
2757 break;
2758 }
2759 return FALSE;
2760 }
2761 }
2762
2763 /* now check for various pop instructions */
2764
2765 for (;;)
2766 {
2767 if ((*pc & 0xf0) == 0x40) pc++; /* rex prefix */
2768
2769 switch (*pc)
2770 {
2771 case 0x58: /* pop %rax/%r8 */
2772 case 0x59: /* pop %rcx/%r9 */
2773 case 0x5a: /* pop %rdx/%r10 */
2774 case 0x5b: /* pop %rbx/%r11 */
2775 case 0x5c: /* pop %rsp/%r12 */
2776 case 0x5d: /* pop %rbp/%r13 */
2777 case 0x5e: /* pop %rsi/%r14 */
2778 case 0x5f: /* pop %rdi/%r15 */
2779 pc++;
2780 continue;
2781 case 0xc2: /* ret $nn */
2782 case 0xc3: /* ret */
2783 return TRUE;
2784 case 0xe9: /* jmp nnnn */
2785 pc += 5 + *(LONG *)(pc + 1);
2786 if (pc - (BYTE *)base >= function->BeginAddress && pc - (BYTE *)base < function->EndAddress)
2787 continue;
2788 break;
2789 case 0xeb: /* jmp n */
2790 pc += 2 + (signed char)pc[1];
2791 if (pc - (BYTE *)base >= function->BeginAddress && pc - (BYTE *)base < function->EndAddress)
2792 continue;
2793 break;
2794 case 0xf3: /* rep; ret (for amd64 prediction bug) */
2795 return pc[1] == 0xc3;
2796 }
2797 return FALSE;
2798 }
2799 }
2800
2801 /* execute a function epilog, which must have been validated with is_inside_epilog() */
2802 static void interpret_epilog( BYTE *pc, CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
2803 {
2804 for (;;)
2805 {
2806 BYTE rex = 0;
2807
2808 if ((*pc & 0xf0) == 0x40) rex = *pc++ & 0x0f; /* rex prefix */
2809
2810 switch (*pc)
2811 {
2812 case 0x58: /* pop %rax/r8 */
2813 case 0x59: /* pop %rcx/r9 */
2814 case 0x5a: /* pop %rdx/r10 */
2815 case 0x5b: /* pop %rbx/r11 */
2816 case 0x5c: /* pop %rsp/r12 */
2817 case 0x5d: /* pop %rbp/r13 */
2818 case 0x5e: /* pop %rsi/r14 */
2819 case 0x5f: /* pop %rdi/r15 */
2820 set_int_reg( context, ctx_ptr, *pc - 0x58 + (rex & 1) * 8, *(ULONG64 *)context->Rsp );
2821 context->Rsp += sizeof(ULONG64);
2822 pc++;
2823 continue;
2824 case 0x81: /* add $nnnn,%rsp */
2825 context->Rsp += *(LONG *)(pc + 2);
2826 pc += 2 + sizeof(LONG);
2827 continue;
2828 case 0x83: /* add $n,%rsp */
2829 context->Rsp += (signed char)pc[2];
2830 pc += 3;
2831 continue;
2832 case 0x8d:
2833 if ((pc[1] >> 6) == 1) /* lea n(reg),%rsp */
2834 {
2835 context->Rsp = get_int_reg( context, (pc[1] & 7) + (rex & 1) * 8 ) + (signed char)pc[2];
2836 pc += 3;
2837 }
2838 else /* lea nnnn(reg),%rsp */
2839 {
2840 context->Rsp = get_int_reg( context, (pc[1] & 7) + (rex & 1) * 8 ) + *(LONG *)(pc + 2);
2841 pc += 2 + sizeof(LONG);
2842 }
2843 continue;
2844 case 0xc2: /* ret $nn */
2845 context->Rip = *(ULONG64 *)context->Rsp;
2846 context->Rsp += sizeof(ULONG64) + *(WORD *)(pc + 1);
2847 return;
2848 case 0xc3: /* ret */
2849 case 0xf3: /* rep; ret */
2850 context->Rip = *(ULONG64 *)context->Rsp;
2851 context->Rsp += sizeof(ULONG64);
2852 return;
2853 case 0xe9: /* jmp nnnn */
2854 pc += 5 + *(LONG *)(pc + 1);
2855 continue;
2856 case 0xeb: /* jmp n */
2857 pc += 2 + (signed char)pc[1];
2858 continue;
2859 }
2860 return;
2861 }
2862 }
2863
2864 /**********************************************************************
2865 * RtlVirtualUnwind (NTDLL.@)
2866 */
2867 PVOID WINAPI RtlVirtualUnwind( ULONG type, ULONG64 base, ULONG64 pc,
2868 RUNTIME_FUNCTION *function, CONTEXT *context,
2869 PVOID *data, ULONG64 *frame_ret,
2870 KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
2871 {
2872 union handler_data *handler_data;
2873 ULONG64 frame, off;
2874 struct UNWIND_INFO *info;
2875 unsigned int i, prolog_offset;
2876
2877 TRACE( "type %x rip %lx rsp %lx\n", type, pc, context->Rsp );
2878 if (TRACE_ON(seh)) dump_unwind_info( base, function );
2879
2880 frame = *frame_ret = context->Rsp;
2881 for (;;)
2882 {
2883 info = (struct UNWIND_INFO *)((char *)base + function->UnwindData);
2884 handler_data = (union handler_data *)&info->opcodes[(info->count + 1) & ~1];
2885
2886 if (info->version != 1)
2887 {
2888 FIXME( "unknown unwind info version %u at %p\n", info->version, info );
2889 return NULL;
2890 }
2891
2892 if (info->frame_reg)
2893 frame = get_int_reg( context, info->frame_reg ) - info->frame_offset * 16;
2894
2895 /* check if in prolog */
2896 if (pc >= base + function->BeginAddress && pc < base + function->BeginAddress + info->prolog)
2897 {
2898 prolog_offset = pc - base - function->BeginAddress;
2899 }
2900 else
2901 {
2902 prolog_offset = ~0;
2903 if (is_inside_epilog( (BYTE *)pc, base, function ))
2904 {
2905 interpret_epilog( (BYTE *)pc, context, ctx_ptr );
2906 *frame_ret = frame;
2907 return NULL;
2908 }
2909 }
2910
2911 for (i = 0; i < info->count; i += get_opcode_size(info->opcodes[i]))
2912 {
2913 if (prolog_offset < info->opcodes[i].offset) continue; /* skip it */
2914
2915 switch (info->opcodes[i].code)
2916 {
2917 case UWOP_PUSH_NONVOL: /* pushq %reg */
2918 set_int_reg( context, ctx_ptr, info->opcodes[i].info, *(ULONG64 *)context->Rsp );
2919 context->Rsp += sizeof(ULONG64);
2920 break;
2921 case UWOP_ALLOC_LARGE: /* subq $nn,%rsp */
2922 if (info->opcodes[i].info) context->Rsp += *(DWORD *)&info->opcodes[i+1];
2923 else context->Rsp += *(USHORT *)&info->opcodes[i+1] * 8;
2924 break;
2925 case UWOP_ALLOC_SMALL: /* subq $n,%rsp */
2926 context->Rsp += (info->opcodes[i].info + 1) * 8;
2927 break;
2928 case UWOP_SET_FPREG: /* leaq nn(%rsp),%framereg */
2929 context->Rsp = *frame_ret = frame;
2930 break;
2931 case UWOP_SAVE_NONVOL: /* movq %reg,n(%rsp) */
2932 off = frame + *(USHORT *)&info->opcodes[i+1] * 8;
2933 set_int_reg( context, ctx_ptr, info->opcodes[i].info, *(ULONG64 *)off );
2934 break;
2935 case UWOP_SAVE_NONVOL_FAR: /* movq %reg,nn(%rsp) */
2936 off = frame + *(DWORD *)&info->opcodes[i+1];
2937 set_int_reg( context, ctx_ptr, info->opcodes[i].info, *(ULONG64 *)off );
2938 break;
2939 case UWOP_SAVE_XMM128: /* movaps %xmmreg,n(%rsp) */
2940 off = frame + *(USHORT *)&info->opcodes[i+1] * 16;
2941 set_float_reg( context, ctx_ptr, info->opcodes[i].info, *(M128A *)off );
2942 break;
2943 case UWOP_SAVE_XMM128_FAR: /* movaps %xmmreg,nn(%rsp) */
2944 off = frame + *(DWORD *)&info->opcodes[i+1];
2945 set_float_reg( context, ctx_ptr, info->opcodes[i].info, *(M128A *)off );
2946 break;
2947 case UWOP_PUSH_MACHFRAME:
2948 FIXME( "PUSH_MACHFRAME %u\n", info->opcodes[i].info );
2949 break;
2950 default:
2951 FIXME( "unknown code %u\n", info->opcodes[i].code );
2952 break;
2953 }
2954 }
2955
2956 if (!(info->flags & UNW_FLAG_CHAININFO)) break;
2957 function = &handler_data->chain; /* restart with the chained info */
2958 }
2959
2960 /* now pop return address */
2961 context->Rip = *(ULONG64 *)context->Rsp;
2962 context->Rsp += sizeof(ULONG64);
2963
2964 if (!(info->flags & type)) return NULL; /* no matching handler */
2965 if (prolog_offset != ~0) return NULL; /* inside prolog */
2966
2967 *data = &handler_data->handler + 1;
2968 return (char *)base + handler_data->handler;
2969 }
2970
2971
2972 /**********************************************************************
2973 * call_unwind_handler
2974 *
2975 * Call a single unwind handler.
2976 * FIXME: Handle nested exceptions.
2977 */
2978 static void call_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch )
2979 {
2980 DWORD res;
2981
2982 dispatch->ControlPc = dispatch->ContextRecord->Rip;
2983
2984 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2985 dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2986 res = dispatch->LanguageHandler( rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2987 TRACE( "handler %p returned %x\n", dispatch->LanguageHandler, res );
2988
2989 switch (res)
2990 {
2991 case ExceptionContinueSearch:
2992 break;
2993 case ExceptionCollidedUnwind:
2994 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
2995 break;
2996 default:
2997 raise_status( STATUS_INVALID_DISPOSITION, rec );
2998 break;
2999 }
3000 }
3001
3002
3003 /**********************************************************************
3004 * call_teb_unwind_handler
3005 *
3006 * Call a single unwind handler from the TEB chain.
3007 * FIXME: Handle nested exceptions.
3008 */
3009 static void call_teb_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
3010 EXCEPTION_REGISTRATION_RECORD *teb_frame )
3011 {
3012 EXCEPTION_REGISTRATION_RECORD *dispatcher;
3013 DWORD res;
3014
3015 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
3016 teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, &dispatcher );
3017 res = teb_frame->Handler( rec, teb_frame, dispatch->ContextRecord, &dispatcher );
3018 TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
3019
3020 switch (res)
3021 {
3022 case ExceptionContinueSearch:
3023 break;
3024 case ExceptionCollidedUnwind:
3025 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
3026 break;
3027 default:
3028 raise_status( STATUS_INVALID_DISPOSITION, rec );
3029 break;
3030 }
3031 }
3032
3033
3034 /*******************************************************************
3035 * RtlUnwindEx (NTDLL.@)
3036 */
3037 void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec,
3038 PVOID retval, CONTEXT *context, UNWIND_HISTORY_TABLE *table )
3039 {
3040 EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
3041 EXCEPTION_RECORD record;
3042 DISPATCHER_CONTEXT dispatch;
3043 CONTEXT new_context;
3044 LDR_MODULE *module;
3045 NTSTATUS status;
3046 DWORD i;
3047
3048 RtlCaptureContext( context );
3049 new_context = *context;
3050
3051 /* build an exception record, if we do not have one */
3052 if (!rec)
3053 {
3054 record.ExceptionCode = STATUS_UNWIND;
3055 record.ExceptionFlags = 0;
3056 record.ExceptionRecord = NULL;
3057 record.ExceptionAddress = (void *)context->Rip;
3058 record.NumberParameters = 0;
3059 rec = &record;
3060 }
3061
3062 rec->ExceptionFlags |= EH_UNWINDING | (end_frame ? 0 : EH_EXIT_UNWIND);
3063
3064 TRACE( "code=%x flags=%x end_frame=%p target_ip=%p rip=%016lx\n",
3065 rec->ExceptionCode, rec->ExceptionFlags, end_frame, target_ip, context->Rip );
3066 for (i = 0; i < min( EXCEPTION_MAXIMUM_PARAMETERS, rec->NumberParameters ); i++)
3067 TRACE( " info[%d]=%016lx\n", i, rec->ExceptionInformation[i] );
3068 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
3069 context->Rax, context->Rbx, context->Rcx, context->Rdx );
3070 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
3071 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
3072 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
3073 context->R8, context->R9, context->R10, context->R11 );
3074 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
3075 context->R12, context->R13, context->R14, context->R15 );
3076
3077 dispatch.EstablisherFrame = context->Rsp;
3078 dispatch.TargetIp = (ULONG64)target_ip;
3079 dispatch.ContextRecord = context;
3080 dispatch.HistoryTable = table;
3081
3082 for (;;)
3083 {
3084 /* FIXME: should use the history table to make things faster */
3085
3086 dispatch.ImageBase = 0;
3087 dispatch.ScopeIndex = 0; /* FIXME */
3088
3089 /* first look for PE exception information */
3090
3091 if ((dispatch.FunctionEntry = lookup_function_info( context->Rip, &dispatch.ImageBase, &module )))
3092 {
3093 dispatch.LanguageHandler = RtlVirtualUnwind( UNW_FLAG_UHANDLER, dispatch.ImageBase,
3094 context->Rip, dispatch.FunctionEntry,
3095 &new_context, &dispatch.HandlerData,
3096 &dispatch.EstablisherFrame, NULL );
3097 goto unwind_done;
3098 }
3099
3100 /* then look for host system exception information */
3101
3102 if (!module || (module->Flags & LDR_WINE_INTERNAL))
3103 {
3104 struct dwarf_eh_bases bases;
3105 const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context->Rip - 1), &bases );
3106
3107 if (fde)
3108 {
3109 dispatch.FunctionEntry = NULL;
3110 status = dwarf_virtual_unwind( context->Rip, &dispatch.EstablisherFrame, &new_context, fde,
3111 &bases, &dispatch.LanguageHandler, &dispatch.HandlerData );
3112 if (status != STATUS_SUCCESS) raise_status( status, rec );
3113 if (dispatch.LanguageHandler && !module)
3114 {
3115 FIXME( "calling personality routine in system library not supported yet\n" );
3116 dispatch.LanguageHandler = NULL;
3117 }
3118 goto unwind_done;
3119 }
3120 }
3121 else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
3122
3123 /* no exception information, treat as a leaf function */
3124
3125 new_context.Rip = *(ULONG64 *)context->Rsp;
3126 new_context.Rsp = context->Rsp + sizeof(ULONG64);
3127 dispatch.EstablisherFrame = new_context.Rsp;
3128 dispatch.LanguageHandler = NULL;
3129
3130 unwind_done:
3131 if (!dispatch.EstablisherFrame) break;
3132
3133 if (is_inside_signal_stack( (void *)dispatch.EstablisherFrame ))
3134 {
3135 TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch.EstablisherFrame,
3136 get_signal_stack(), (char *)get_signal_stack() + signal_stack_size );
3137 *context = new_context;
3138 continue;
3139 }
3140
3141 if ((dispatch.EstablisherFrame & 7) ||
3142 dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
3143 dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)
3144 {
3145 ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
3146 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
3147 rec->ExceptionFlags |= EH_STACK_INVALID;
3148 break;
3149 }
3150
3151 if (dispatch.LanguageHandler)
3152 {
3153 if (end_frame && (dispatch.EstablisherFrame > (ULONG64)end_frame))
3154 {
3155 ERR( "invalid end frame %lx/%p\n", dispatch.EstablisherFrame, end_frame );
3156 raise_status( STATUS_INVALID_UNWIND_TARGET, rec );
3157 }
3158 if (dispatch.EstablisherFrame == (ULONG64)end_frame) rec->ExceptionFlags |= EH_TARGET_UNWIND;
3159 call_unwind_handler( rec, &dispatch );
3160 }
3161 else /* hack: call builtin handlers registered in the tib list */
3162 {
3163 while ((ULONG64)teb_frame < new_context.Rsp && (ULONG64)teb_frame < (ULONG64)end_frame)
3164 {
3165 TRACE( "found builtin frame %p handler %p\n", teb_frame, teb_frame->Handler );
3166 dispatch.EstablisherFrame = (ULONG64)teb_frame;
3167 call_teb_unwind_handler( rec, &dispatch, teb_frame );
3168 teb_frame = __wine_pop_frame( teb_frame );
3169 }
3170 if ((ULONG64)teb_frame == (ULONG64)end_frame && (ULONG64)end_frame < new_context.Rsp) break;
3171 dispatch.EstablisherFrame = new_context.Rsp;
3172 }
3173
3174 if (context->Rsp == (ULONG64)end_frame) break;
3175 *context = new_context;
3176 }
3177
3178 if (rec->ExceptionCode == STATUS_LONGJUMP && rec->NumberParameters >= 1)
3179 {
3180 struct MSVCRT_JUMP_BUFFER *jmp = (struct MSVCRT_JUMP_BUFFER *)rec->ExceptionInformation[0];
3181 context->Rbx = jmp->Rbx;
3182 context->Rsp = jmp->Rsp;
3183 context->Rbp = jmp->Rbp;
3184 context->Rsi = jmp->Rsi;
3185 context->Rdi = jmp->Rdi;
3186 context->R12 = jmp->R12;
3187 context->R13 = jmp->R13;
3188 context->R14 = jmp->R14;
3189 context->R15 = jmp->R15;
3190 context->Rip = jmp->Rip;
3191 context->u.s.Xmm6 = jmp->Xmm6;
3192 context->u.s.Xmm7 = jmp->Xmm7;
3193 context->u.s.Xmm8 = jmp->Xmm8;
3194 context->u.s.Xmm9 = jmp->Xmm9;
3195 context->u.s.Xmm10 = jmp->Xmm10;
3196 context->u.s.Xmm11 = jmp->Xmm11;
3197 context->u.s.Xmm12 = jmp->Xmm12;
3198 context->u.s.Xmm13 = jmp->Xmm13;
3199 context->u.s.Xmm14 = jmp->Xmm14;
3200 context->u.s.Xmm15 = jmp->Xmm15;
3201 }
3202 else if (rec->ExceptionCode == STATUS_UNWIND_CONSOLIDATE && rec->NumberParameters >= 1)
3203 {
3204 PVOID (CALLBACK *consolidate)(EXCEPTION_RECORD *) = (void *)rec->ExceptionInformation[0];
3205 TRACE( "calling consolidate callback %p\n", consolidate );
3206 target_ip = consolidate( rec );
3207 }
3208 context->Rax = (ULONG64)retval;
3209 context->Rip = (ULONG64)target_ip;
3210 TRACE( "returning to %lx stack %lx\n", context->Rip, context->Rsp );
3211 set_cpu_context( context );
3212 }
3213
3214
3215 /*******************************************************************
3216 * RtlUnwind (NTDLL.@)
3217 */
3218 void WINAPI RtlUnwind( void *frame, void *target_ip, EXCEPTION_RECORD *rec, void *retval )
3219 {
3220 CONTEXT context;
3221 RtlUnwindEx( frame, target_ip, rec, retval, &context, NULL );
3222 }
3223
3224
3225 /*******************************************************************
3226 * _local_unwind (NTDLL.@)
3227 */
3228 void WINAPI _local_unwind( void *frame, void *target_ip )
3229 {
3230 CONTEXT context;
3231 RtlUnwindEx( frame, target_ip, NULL, NULL, &context, NULL );
3232 }
3233
3234
3235 /*******************************************************************
3236 * __C_specific_handler (NTDLL.@)
3237 */
3238 EXCEPTION_DISPOSITION WINAPI __C_specific_handler( EXCEPTION_RECORD *rec,
3239 ULONG64 frame,
3240 CONTEXT *context,
3241 struct _DISPATCHER_CONTEXT *dispatch )
3242 {
3243 SCOPE_TABLE *table = dispatch->HandlerData;
3244 ULONG i;
3245
3246 TRACE( "%p %lx %p %p\n", rec, frame, context, dispatch );
3247 if (TRACE_ON(seh)) dump_scope_table( dispatch->ImageBase, table );
3248
3249 if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)) /* FIXME */
3250 return ExceptionContinueSearch;
3251
3252 for (i = 0; i < table->Count; i++)
3253 {
3254 if (context->Rip >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
3255 context->Rip < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
3256 {
3257 if (!table->ScopeRecord[i].JumpTarget) continue;
3258 if (table->ScopeRecord[i].HandlerAddress != EXCEPTION_EXECUTE_HANDLER)
3259 {
3260 EXCEPTION_POINTERS ptrs;
3261 PC_LANGUAGE_EXCEPTION_HANDLER filter;
3262
3263 filter = (PC_LANGUAGE_EXCEPTION_HANDLER)(dispatch->ImageBase + table->ScopeRecord[i].HandlerAddress);
3264 ptrs.ExceptionRecord = rec;
3265 ptrs.ContextRecord = context;
3266 TRACE( "calling filter %p ptrs %p frame %lx\n", filter, &ptrs, frame );
3267 switch (filter( &ptrs, frame ))
3268 {
3269 case EXCEPTION_EXECUTE_HANDLER:
3270 break;
3271 case EXCEPTION_CONTINUE_SEARCH:
3272 continue;
3273 case EXCEPTION_CONTINUE_EXECUTION:
3274 return ExceptionContinueExecution;
3275 }
3276 }
3277 TRACE( "unwinding to target %lx\n", dispatch->ImageBase + table->ScopeRecord[i].JumpTarget );
3278 RtlUnwindEx( (void *)frame, (char *)dispatch->ImageBase + table->ScopeRecord[i].JumpTarget,
3279 rec, 0, context, dispatch->HistoryTable );
3280 }
3281 }
3282 return ExceptionContinueSearch;
3283 }
3284
3285
3286 /*******************************************************************
3287 * NtRaiseException (NTDLL.@)
3288 */
3289 NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
3290 {
3291 NTSTATUS status = raise_exception( rec, context, first_chance );
3292 if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
3293 return status;
3294 }
3295
3296
3297 /***********************************************************************
3298 * RtlRaiseException (NTDLL.@)
3299 */
3300 void WINAPI __regs_RtlRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context )
3301 {
3302 NTSTATUS status;
3303
3304 rec->ExceptionAddress = (void *)context->Rip;
3305 status = raise_exception( rec, context, TRUE );
3306 if (status != STATUS_SUCCESS) raise_status( status, rec );
3307 }
3308 __ASM_GLOBAL_FUNC( RtlRaiseException,
3309 "movq %rcx,8(%rsp)\n\t"
3310 "sub $0x4f8,%rsp\n\t"
3311 __ASM_CFI(".cfi_adjust_cfa_offset 0x4f8\n\t")
3312 "leaq 0x20(%rsp),%rcx\n\t"
3313 "call " __ASM_NAME("RtlCaptureContext") "\n\t"
3314 "leaq 0x20(%rsp),%rdx\n\t" /* context pointer */
3315 "movq 0x4f8(%rsp),%rax\n\t" /* return address */
3316 "movq %rax,0xf8(%rdx)\n\t" /* context->Rip */
3317 "leaq 0x500(%rsp),%rax\n\t" /* orig stack pointer */
3318 "movq %rax,0x98(%rdx)\n\t" /* context->Rsp */
3319 "movq (%rax),%rcx\n\t" /* original first parameter */
3320 "movq %rcx,0x80(%rdx)\n\t" /* context->Rcx */
3321 "call " __ASM_NAME("__regs_RtlRaiseException") "\n\t"
3322 "leaq 0x20(%rsp),%rdi\n\t" /* context pointer */
3323 "call " __ASM_NAME("set_cpu_context") /* does not return */ );
3324
3325
3326 /*************************************************************************
3327 * RtlCaptureStackBackTrace (NTDLL.@)
3328 */
3329 USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
3330 {
3331 FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
3332 return 0;
3333 }
3334
3335
3336 /***********************************************************************
3337 * call_thread_func
3338 */
3339 void call_thread_func( LPTHREAD_START_ROUTINE entry, void *arg, void *frame )
3340 {
3341 ntdll_get_thread_data()->exit_frame = frame;
3342 __TRY
3343 {
3344 RtlExitUserThread( entry( arg ));
3345 }
3346 __EXCEPT(unhandled_exception_filter)
3347 {
3348 NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
3349 }
3350 __ENDTRY
3351 abort(); /* should not be reached */
3352 }
3353
3354 extern void DECLSPEC_NORETURN call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg );
3355 __ASM_GLOBAL_FUNC( call_thread_entry_point,
3356 "subq $56,%rsp\n\t"
3357 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3358 "movq %rbp,48(%rsp)\n\t"
3359 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3360 "movq %rbx,40(%rsp)\n\t"
3361 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3362 "movq %r12,32(%rsp)\n\t"
3363 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3364 "movq %r13,24(%rsp)\n\t"
3365 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3366 "movq %r14,16(%rsp)\n\t"
3367 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3368 "movq %r15,8(%rsp)\n\t"
3369 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3370 "movq %rsp,%rdx\n\t"
3371 "call " __ASM_NAME("call_thread_func") );
3372
3373 extern void DECLSPEC_NORETURN call_thread_exit_func( int status, void (*func)(int), void *frame );
3374 __ASM_GLOBAL_FUNC( call_thread_exit_func,
3375 "movq %rdx,%rsp\n\t"
3376 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3377 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3378 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3379 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3380 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3381 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3382 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3383 "call *%rsi" );
3384
3385 /***********************************************************************
3386 * RtlExitUserThread (NTDLL.@)
3387 */
3388 void WINAPI RtlExitUserThread( ULONG status )
3389 {
3390 if (!ntdll_get_thread_data()->exit_frame) exit_thread( status );
3391 call_thread_exit_func( status, exit_thread, ntdll_get_thread_data()->exit_frame );
3392 }
3393
3394 /***********************************************************************
3395 * abort_thread
3396 */
3397 void abort_thread( int status )
3398 {
3399 if (!ntdll_get_thread_data()->exit_frame) terminate_thread( status );
3400 call_thread_exit_func( status, terminate_thread, ntdll_get_thread_data()->exit_frame );
3401 }
3402
3403 /**********************************************************************
3404 * __wine_enter_vm86 (NTDLL.@)
3405 */
3406 void __wine_enter_vm86( CONTEXT *context )
3407 {
3408 MESSAGE("vm86 mode not supported on this platform\n");
3409 }
3410
3411 /**********************************************************************
3412 * DbgBreakPoint (NTDLL.@)
3413 */
3414 __ASM_STDCALL_FUNC( DbgBreakPoint, 0, "int $3; ret")
3415
3416 /**********************************************************************
3417 * DbgUserBreakPoint (NTDLL.@)
3418 */
3419 __ASM_STDCALL_FUNC( DbgUserBreakPoint, 0, "int $3; ret")
3420
3421 #endif /* __x86_64__ */
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