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dbghelp: Use local declarations of r_debug and link_map structs.
[wine.git] / dlls / ntdll / signal_x86_64.c
blob04f3854388cbada4549fc52e4e167850633a3e97
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_SYSCALL_H
42 # include <syscall.h>
43 #else
44 # ifdef HAVE_SYS_SYSCALL_H
45 # include <sys/syscall.h>
46 # endif
47 #endif
48 #ifdef HAVE_SYS_SIGNAL_H
49 # include <sys/signal.h>
50 #endif
51 #ifdef HAVE_SYS_UCONTEXT_H
52 # include <sys/ucontext.h>
53 #endif
54 #ifdef HAVE_LIBUNWIND
55 # define UNW_LOCAL_ONLY
56 # include <libunwind.h>
57 #endif
58 #ifdef __APPLE__
59 # include <mach/mach.h>
60 #endif
61
62 #define NONAMELESSUNION
63 #define NONAMELESSSTRUCT
64 #include "ntstatus.h"
65 #define WIN32_NO_STATUS
66 #include "windef.h"
67 #include "winternl.h"
68 #include "wine/library.h"
69 #include "wine/exception.h"
70 #include "wine/list.h"
71 #include "ntdll_misc.h"
72 #include "wine/debug.h"
73
74 #ifdef HAVE_VALGRIND_MEMCHECK_H
75 #include <valgrind/memcheck.h>
76 #endif
77
78 WINE_DEFAULT_DEBUG_CHANNEL(seh);
79 WINE_DECLARE_DEBUG_CHANNEL(relay);
80
81 typedef struct _SCOPE_TABLE
82 {
83 ULONG Count;
84 struct
85 {
86 ULONG BeginAddress;
87 ULONG EndAddress;
88 ULONG HandlerAddress;
89 ULONG JumpTarget;
90 } ScopeRecord[1];
91 } SCOPE_TABLE, *PSCOPE_TABLE;
92
93
94 /* layering violation: the setjmp buffer is defined in msvcrt, but used by RtlUnwindEx */
95 struct MSVCRT_JUMP_BUFFER
96 {
97 ULONG64 Frame;
98 ULONG64 Rbx;
99 ULONG64 Rsp;
100 ULONG64 Rbp;
101 ULONG64 Rsi;
102 ULONG64 Rdi;
103 ULONG64 R12;
104 ULONG64 R13;
105 ULONG64 R14;
106 ULONG64 R15;
107 ULONG64 Rip;
108 ULONG64 Spare;
109 M128A Xmm6;
110 M128A Xmm7;
111 M128A Xmm8;
112 M128A Xmm9;
113 M128A Xmm10;
114 M128A Xmm11;
115 M128A Xmm12;
116 M128A Xmm13;
117 M128A Xmm14;
118 M128A Xmm15;
119 };
120
121 /***********************************************************************
122 * signal context platform-specific definitions
123 */
124 #ifdef linux
125
126 #include <asm/prctl.h>
127 static inline int arch_prctl( int func, void *ptr ) { return syscall( __NR_arch_prctl, func, ptr ); }
128
129 #define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
130 #define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
131 #define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
132 #define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
133 #define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
134 #define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
135 #define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
136 #define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
137 #define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
138 #define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
139 #define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
140 #define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
141 #define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
142 #define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
143 #define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
144
145 #define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
146 #define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
147 #define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
148
149 #define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
150 #define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
151 #define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
152 #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
153 #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
154
155 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
156
157 #elif defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
158
159 #define RAX_sig(context) ((context)->uc_mcontext.mc_rax)
160 #define RBX_sig(context) ((context)->uc_mcontext.mc_rbx)
161 #define RCX_sig(context) ((context)->uc_mcontext.mc_rcx)
162 #define RDX_sig(context) ((context)->uc_mcontext.mc_rdx)
163 #define RSI_sig(context) ((context)->uc_mcontext.mc_rsi)
164 #define RDI_sig(context) ((context)->uc_mcontext.mc_rdi)
165 #define RBP_sig(context) ((context)->uc_mcontext.mc_rbp)
166 #define R8_sig(context) ((context)->uc_mcontext.mc_r8)
167 #define R9_sig(context) ((context)->uc_mcontext.mc_r9)
168 #define R10_sig(context) ((context)->uc_mcontext.mc_r10)
169 #define R11_sig(context) ((context)->uc_mcontext.mc_r11)
170 #define R12_sig(context) ((context)->uc_mcontext.mc_r12)
171 #define R13_sig(context) ((context)->uc_mcontext.mc_r13)
172 #define R14_sig(context) ((context)->uc_mcontext.mc_r14)
173 #define R15_sig(context) ((context)->uc_mcontext.mc_r15)
174
175 #define CS_sig(context) ((context)->uc_mcontext.mc_cs)
176 #define DS_sig(context) ((context)->uc_mcontext.mc_ds)
177 #define ES_sig(context) ((context)->uc_mcontext.mc_es)
178 #define FS_sig(context) ((context)->uc_mcontext.mc_fs)
179 #define GS_sig(context) ((context)->uc_mcontext.mc_gs)
180 #define SS_sig(context) ((context)->uc_mcontext.mc_ss)
181
182 #define EFL_sig(context) ((context)->uc_mcontext.mc_rflags)
183
184 #define RIP_sig(context) ((context)->uc_mcontext.mc_rip)
185 #define RSP_sig(context) ((context)->uc_mcontext.mc_rsp)
186 #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
187 #define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
188
189 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.mc_fpstate))
190
191 #elif defined(__NetBSD__)
192
193 #define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
194 #define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
195 #define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
196 #define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
197 #define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
198 #define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
199 #define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
200 #define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
201 #define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
202 #define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
203 #define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
204 #define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
205 #define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
206 #define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
207 #define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
208
209 #define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
210 #define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
211 #define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
212 #define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
213 #define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
214 #define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
215
216 #define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
217
218 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
219 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
220
221 #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
222 #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
223
224 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
225 #elif defined (__APPLE__)
226 #define RAX_sig(context) ((context)->uc_mcontext->__ss.__rax)
227 #define RBX_sig(context) ((context)->uc_mcontext->__ss.__rbx)
228 #define RCX_sig(context) ((context)->uc_mcontext->__ss.__rcx)
229 #define RDX_sig(context) ((context)->uc_mcontext->__ss.__rdx)
230 #define RSI_sig(context) ((context)->uc_mcontext->__ss.__rsi)
231 #define RDI_sig(context) ((context)->uc_mcontext->__ss.__rdi)
232 #define RBP_sig(context) ((context)->uc_mcontext->__ss.__rbp)
233 #define R8_sig(context) ((context)->uc_mcontext->__ss.__r8)
234 #define R9_sig(context) ((context)->uc_mcontext->__ss.__r9)
235 #define R10_sig(context) ((context)->uc_mcontext->__ss.__r10)
236 #define R11_sig(context) ((context)->uc_mcontext->__ss.__r11)
237 #define R12_sig(context) ((context)->uc_mcontext->__ss.__r12)
238 #define R13_sig(context) ((context)->uc_mcontext->__ss.__r13)
239 #define R14_sig(context) ((context)->uc_mcontext->__ss.__r14)
240 #define R15_sig(context) ((context)->uc_mcontext->__ss.__r15)
241
242 #define CS_sig(context) ((context)->uc_mcontext->__ss.__cs)
243 #define FS_sig(context) ((context)->uc_mcontext->__ss.__fs)
244 #define GS_sig(context) ((context)->uc_mcontext->__ss.__gs)
245
246 #define EFL_sig(context) ((context)->uc_mcontext->__ss.__rflags)
247
248 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rip))
249 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rsp))
250
251 #define TRAP_sig(context) ((context)->uc_mcontext->__es.__trapno)
252 #define ERROR_sig(context) ((context)->uc_mcontext->__es.__err)
253
254 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)&(context)->uc_mcontext->__fs.__fpu_fcw)
255
256 #else
257 #error You must define the signal context functions for your platform
258 #endif
259
260 enum i386_trap_code
261 {
262 TRAP_x86_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
263 TRAP_x86_DIVIDE = 0, /* Division by zero exception */
264 TRAP_x86_TRCTRAP = 1, /* Single-step exception */
265 TRAP_x86_NMI = 2, /* NMI interrupt */
266 TRAP_x86_BPTFLT = 3, /* Breakpoint exception */
267 TRAP_x86_OFLOW = 4, /* Overflow exception */
268 TRAP_x86_BOUND = 5, /* Bound range exception */
269 TRAP_x86_PRIVINFLT = 6, /* Invalid opcode exception */
270 TRAP_x86_DNA = 7, /* Device not available exception */
271 TRAP_x86_DOUBLEFLT = 8, /* Double fault exception */
272 TRAP_x86_FPOPFLT = 9, /* Coprocessor segment overrun */
273 TRAP_x86_TSSFLT = 10, /* Invalid TSS exception */
274 TRAP_x86_SEGNPFLT = 11, /* Segment not present exception */
275 TRAP_x86_STKFLT = 12, /* Stack fault */
276 TRAP_x86_PROTFLT = 13, /* General protection fault */
277 TRAP_x86_PAGEFLT = 14, /* Page fault */
278 TRAP_x86_ARITHTRAP = 16, /* Floating point exception */
279 TRAP_x86_ALIGNFLT = 17, /* Alignment check exception */
280 TRAP_x86_MCHK = 18, /* Machine check exception */
281 TRAP_x86_CACHEFLT = 19 /* Cache flush exception */
282 };
283
284 static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
285 static size_t signal_stack_size;
286
287 typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
288
289 /* stack layout when calling an exception raise function */
290 struct stack_layout
291 {
292 CONTEXT context;
293 EXCEPTION_RECORD rec;
294 ULONG64 rsi;
295 ULONG64 rdi;
296 ULONG64 rbp;
297 ULONG64 rip;
298 ULONG64 red_zone[16];
299 };
300
301 typedef int (*wine_signal_handler)(unsigned int sig);
302
303 static wine_signal_handler handlers[256];
304
305 struct amd64_thread_data
306 {
307 DWORD_PTR dr0; /* debug registers */
308 DWORD_PTR dr1;
309 DWORD_PTR dr2;
310 DWORD_PTR dr3;
311 DWORD_PTR dr6;
312 DWORD_PTR dr7;
313 void *exit_frame; /* exit frame pointer */
314 };
315
316 C_ASSERT( sizeof(struct amd64_thread_data) <= sizeof(((TEB *)0)->SystemReserved2) );
317 C_ASSERT( offsetof( TEB, SystemReserved2 ) + offsetof( struct amd64_thread_data, exit_frame ) == 0x330 );
318
319 static inline struct amd64_thread_data *amd64_thread_data(void)
320 {
321 return (struct amd64_thread_data *)NtCurrentTeb()->SystemReserved2;
322 }
323
324 static inline void set_sigcontext( const CONTEXT *context, ucontext_t *sigcontext )
325 {
326 RAX_sig(sigcontext) = context->Rax;
327 RCX_sig(sigcontext) = context->Rcx;
328 RDX_sig(sigcontext) = context->Rdx;
329 RBX_sig(sigcontext) = context->Rbx;
330 RSP_sig(sigcontext) = context->Rsp;
331 RBP_sig(sigcontext) = context->Rbp;
332 RSI_sig(sigcontext) = context->Rsi;
333 RDI_sig(sigcontext) = context->Rdi;
334 R8_sig(sigcontext) = context->R8;
335 R9_sig(sigcontext) = context->R9;
336 R10_sig(sigcontext) = context->R10;
337 R11_sig(sigcontext) = context->R11;
338 R12_sig(sigcontext) = context->R12;
339 R13_sig(sigcontext) = context->R13;
340 R14_sig(sigcontext) = context->R14;
341 R15_sig(sigcontext) = context->R15;
342 RIP_sig(sigcontext) = context->Rip;
343 CS_sig(sigcontext) = context->SegCs;
344 FS_sig(sigcontext) = context->SegFs;
345 GS_sig(sigcontext) = context->SegGs;
346 EFL_sig(sigcontext) = context->EFlags;
347 #ifdef DS_sig
348 DS_sig(sigcontext) = context->SegDs;
349 #endif
350 #ifdef ES_sig
351 ES_sig(sigcontext) = context->SegEs;
352 #endif
353 #ifdef SS_sig
354 SS_sig(sigcontext) = context->SegSs;
355 #endif
356 }
357
358
359 /***********************************************************************
360 * Definitions for Win32 unwind tables
361 */
362
363 union handler_data
364 {
365 RUNTIME_FUNCTION chain;
366 ULONG handler;
367 };
368
369 struct opcode
370 {
371 BYTE offset;
372 BYTE code : 4;
373 BYTE info : 4;
374 };
375
376 struct UNWIND_INFO
377 {
378 BYTE version : 3;
379 BYTE flags : 5;
380 BYTE prolog;
381 BYTE count;
382 BYTE frame_reg : 4;
383 BYTE frame_offset : 4;
384 struct opcode opcodes[1]; /* info->count entries */
385 /* followed by handler_data */
386 };
387
388 #define UWOP_PUSH_NONVOL 0
389 #define UWOP_ALLOC_LARGE 1
390 #define UWOP_ALLOC_SMALL 2
391 #define UWOP_SET_FPREG 3
392 #define UWOP_SAVE_NONVOL 4
393 #define UWOP_SAVE_NONVOL_FAR 5
394 #define UWOP_EPILOG 6
395 #define UWOP_SAVE_XMM128 8
396 #define UWOP_SAVE_XMM128_FAR 9
397 #define UWOP_PUSH_MACHFRAME 10
398
399 static void dump_unwind_info( ULONG64 base, RUNTIME_FUNCTION *function )
400 {
401 static const char * const reg_names[16] =
402 { "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
403 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" };
404
405 union handler_data *handler_data;
406 struct UNWIND_INFO *info;
407 unsigned int i, count;
408
409 TRACE( "**** func %x-%x\n", function->BeginAddress, function->EndAddress );
410 for (;;)
411 {
412 if (function->UnwindData & 1)
413 {
414 RUNTIME_FUNCTION *next = (RUNTIME_FUNCTION *)((char *)base + (function->UnwindData & ~1));
415 TRACE( "unwind info for function %p-%p chained to function %p-%p\n",
416 (char *)base + function->BeginAddress, (char *)base + function->EndAddress,
417 (char *)base + next->BeginAddress, (char *)base + next->EndAddress );
418 function = next;
419 continue;
420 }
421 info = (struct UNWIND_INFO *)((char *)base + function->UnwindData);
422
423 TRACE( "unwind info at %p flags %x prolog 0x%x bytes function %p-%p\n",
424 info, info->flags, info->prolog,
425 (char *)base + function->BeginAddress, (char *)base + function->EndAddress );
426
427 if (info->frame_reg)
428 TRACE( " frame register %s offset 0x%x(%%rsp)\n",
429 reg_names[info->frame_reg], info->frame_offset * 16 );
430
431 for (i = 0; i < info->count; i++)
432 {
433 TRACE( " 0x%x: ", info->opcodes[i].offset );
434 switch (info->opcodes[i].code)
435 {
436 case UWOP_PUSH_NONVOL:
437 TRACE( "pushq %%%s\n", reg_names[info->opcodes[i].info] );
438 break;
439 case UWOP_ALLOC_LARGE:
440 if (info->opcodes[i].info)
441 {
442 count = *(DWORD *)&info->opcodes[i+1];
443 i += 2;
444 }
445 else
446 {
447 count = *(USHORT *)&info->opcodes[i+1] * 8;
448 i++;
449 }
450 TRACE( "subq $0x%x,%%rsp\n", count );
451 break;
452 case UWOP_ALLOC_SMALL:
453 count = (info->opcodes[i].info + 1) * 8;
454 TRACE( "subq $0x%x,%%rsp\n", count );
455 break;
456 case UWOP_SET_FPREG:
457 TRACE( "leaq 0x%x(%%rsp),%s\n",
458 info->frame_offset * 16, reg_names[info->frame_reg] );
459 break;
460 case UWOP_SAVE_NONVOL:
461 count = *(USHORT *)&info->opcodes[i+1] * 8;
462 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names[info->opcodes[i].info], count );
463 i++;
464 break;
465 case UWOP_SAVE_NONVOL_FAR:
466 count = *(DWORD *)&info->opcodes[i+1];
467 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names[info->opcodes[i].info], count );
468 i += 2;
469 break;
470 case UWOP_SAVE_XMM128:
471 count = *(USHORT *)&info->opcodes[i+1] * 16;
472 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info->opcodes[i].info, count );
473 i++;
474 break;
475 case UWOP_SAVE_XMM128_FAR:
476 count = *(DWORD *)&info->opcodes[i+1];
477 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info->opcodes[i].info, count );
478 i += 2;
479 break;
480 case UWOP_PUSH_MACHFRAME:
481 TRACE( "PUSH_MACHFRAME %u\n", info->opcodes[i].info );
482 break;
483 case UWOP_EPILOG:
484 if (info->version == 2)
485 {
486 unsigned int offset;
487 if (info->opcodes[i].info)
488 offset = info->opcodes[i].offset;
489 else
490 offset = (info->opcodes[i+1].info << 8) + info->opcodes[i+1].offset;
491 TRACE("epilog %p-%p\n", (char *)base + function->EndAddress - offset,
492 (char *)base + function->EndAddress - offset + info->opcodes[i].offset );
493 i += 1;
494 break;
495 }
496 default:
497 FIXME( "unknown code %u\n", info->opcodes[i].code );
498 break;
499 }
500 }
501
502 handler_data = (union handler_data *)&info->opcodes[(info->count + 1) & ~1];
503 if (info->flags & UNW_FLAG_CHAININFO)
504 {
505 TRACE( " chained to function %p-%p\n",
506 (char *)base + handler_data->chain.BeginAddress,
507 (char *)base + handler_data->chain.EndAddress );
508 function = &handler_data->chain;
509 continue;
510 }
511 if (info->flags & (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER))
512 TRACE( " handler %p data at %p\n",
513 (char *)base + handler_data->handler, &handler_data->handler + 1 );
514 break;
515 }
516 }
517
518 static void dump_scope_table( ULONG64 base, const SCOPE_TABLE *table )
519 {
520 unsigned int i;
521
522 TRACE( "scope table at %p\n", table );
523 for (i = 0; i < table->Count; i++)
524 TRACE( " %u: %lx-%lx handler %lx target %lx\n", i,
525 base + table->ScopeRecord[i].BeginAddress,
526 base + table->ScopeRecord[i].EndAddress,
527 base + table->ScopeRecord[i].HandlerAddress,
528 base + table->ScopeRecord[i].JumpTarget );
529 }
530
531
532 /***********************************************************************
533 * Definitions for Dwarf unwind tables
534 */
535
536 enum dwarf_call_frame_info
537 {
538 DW_CFA_advance_loc = 0x40,
539 DW_CFA_offset = 0x80,
540 DW_CFA_restore = 0xc0,
541 DW_CFA_nop = 0x00,
542 DW_CFA_set_loc = 0x01,
543 DW_CFA_advance_loc1 = 0x02,
544 DW_CFA_advance_loc2 = 0x03,
545 DW_CFA_advance_loc4 = 0x04,
546 DW_CFA_offset_extended = 0x05,
547 DW_CFA_restore_extended = 0x06,
548 DW_CFA_undefined = 0x07,
549 DW_CFA_same_value = 0x08,
550 DW_CFA_register = 0x09,
551 DW_CFA_remember_state = 0x0a,
552 DW_CFA_restore_state = 0x0b,
553 DW_CFA_def_cfa = 0x0c,
554 DW_CFA_def_cfa_register = 0x0d,
555 DW_CFA_def_cfa_offset = 0x0e,
556 DW_CFA_def_cfa_expression = 0x0f,
557 DW_CFA_expression = 0x10,
558 DW_CFA_offset_extended_sf = 0x11,
559 DW_CFA_def_cfa_sf = 0x12,
560 DW_CFA_def_cfa_offset_sf = 0x13,
561 DW_CFA_val_offset = 0x14,
562 DW_CFA_val_offset_sf = 0x15,
563 DW_CFA_val_expression = 0x16,
564 };
565
566 enum dwarf_operation
567 {
568 DW_OP_addr = 0x03,
569 DW_OP_deref = 0x06,
570 DW_OP_const1u = 0x08,
571 DW_OP_const1s = 0x09,
572 DW_OP_const2u = 0x0a,
573 DW_OP_const2s = 0x0b,
574 DW_OP_const4u = 0x0c,
575 DW_OP_const4s = 0x0d,
576 DW_OP_const8u = 0x0e,
577 DW_OP_const8s = 0x0f,
578 DW_OP_constu = 0x10,
579 DW_OP_consts = 0x11,
580 DW_OP_dup = 0x12,
581 DW_OP_drop = 0x13,
582 DW_OP_over = 0x14,
583 DW_OP_pick = 0x15,
584 DW_OP_swap = 0x16,
585 DW_OP_rot = 0x17,
586 DW_OP_xderef = 0x18,
587 DW_OP_abs = 0x19,
588 DW_OP_and = 0x1a,
589 DW_OP_div = 0x1b,
590 DW_OP_minus = 0x1c,
591 DW_OP_mod = 0x1d,
592 DW_OP_mul = 0x1e,
593 DW_OP_neg = 0x1f,
594 DW_OP_not = 0x20,
595 DW_OP_or = 0x21,
596 DW_OP_plus = 0x22,
597 DW_OP_plus_uconst = 0x23,
598 DW_OP_shl = 0x24,
599 DW_OP_shr = 0x25,
600 DW_OP_shra = 0x26,
601 DW_OP_xor = 0x27,
602 DW_OP_bra = 0x28,
603 DW_OP_eq = 0x29,
604 DW_OP_ge = 0x2a,
605 DW_OP_gt = 0x2b,
606 DW_OP_le = 0x2c,
607 DW_OP_lt = 0x2d,
608 DW_OP_ne = 0x2e,
609 DW_OP_skip = 0x2f,
610 DW_OP_lit0 = 0x30,
611 DW_OP_lit1 = 0x31,
612 DW_OP_lit2 = 0x32,
613 DW_OP_lit3 = 0x33,
614 DW_OP_lit4 = 0x34,
615 DW_OP_lit5 = 0x35,
616 DW_OP_lit6 = 0x36,
617 DW_OP_lit7 = 0x37,
618 DW_OP_lit8 = 0x38,
619 DW_OP_lit9 = 0x39,
620 DW_OP_lit10 = 0x3a,
621 DW_OP_lit11 = 0x3b,
622 DW_OP_lit12 = 0x3c,
623 DW_OP_lit13 = 0x3d,
624 DW_OP_lit14 = 0x3e,
625 DW_OP_lit15 = 0x3f,
626 DW_OP_lit16 = 0x40,
627 DW_OP_lit17 = 0x41,
628 DW_OP_lit18 = 0x42,
629 DW_OP_lit19 = 0x43,
630 DW_OP_lit20 = 0x44,
631 DW_OP_lit21 = 0x45,
632 DW_OP_lit22 = 0x46,
633 DW_OP_lit23 = 0x47,
634 DW_OP_lit24 = 0x48,
635 DW_OP_lit25 = 0x49,
636 DW_OP_lit26 = 0x4a,
637 DW_OP_lit27 = 0x4b,
638 DW_OP_lit28 = 0x4c,
639 DW_OP_lit29 = 0x4d,
640 DW_OP_lit30 = 0x4e,
641 DW_OP_lit31 = 0x4f,
642 DW_OP_reg0 = 0x50,
643 DW_OP_reg1 = 0x51,
644 DW_OP_reg2 = 0x52,
645 DW_OP_reg3 = 0x53,
646 DW_OP_reg4 = 0x54,
647 DW_OP_reg5 = 0x55,
648 DW_OP_reg6 = 0x56,
649 DW_OP_reg7 = 0x57,
650 DW_OP_reg8 = 0x58,
651 DW_OP_reg9 = 0x59,
652 DW_OP_reg10 = 0x5a,
653 DW_OP_reg11 = 0x5b,
654 DW_OP_reg12 = 0x5c,
655 DW_OP_reg13 = 0x5d,
656 DW_OP_reg14 = 0x5e,
657 DW_OP_reg15 = 0x5f,
658 DW_OP_reg16 = 0x60,
659 DW_OP_reg17 = 0x61,
660 DW_OP_reg18 = 0x62,
661 DW_OP_reg19 = 0x63,
662 DW_OP_reg20 = 0x64,
663 DW_OP_reg21 = 0x65,
664 DW_OP_reg22 = 0x66,
665 DW_OP_reg23 = 0x67,
666 DW_OP_reg24 = 0x68,
667 DW_OP_reg25 = 0x69,
668 DW_OP_reg26 = 0x6a,
669 DW_OP_reg27 = 0x6b,
670 DW_OP_reg28 = 0x6c,
671 DW_OP_reg29 = 0x6d,
672 DW_OP_reg30 = 0x6e,
673 DW_OP_reg31 = 0x6f,
674 DW_OP_breg0 = 0x70,
675 DW_OP_breg1 = 0x71,
676 DW_OP_breg2 = 0x72,
677 DW_OP_breg3 = 0x73,
678 DW_OP_breg4 = 0x74,
679 DW_OP_breg5 = 0x75,
680 DW_OP_breg6 = 0x76,
681 DW_OP_breg7 = 0x77,
682 DW_OP_breg8 = 0x78,
683 DW_OP_breg9 = 0x79,
684 DW_OP_breg10 = 0x7a,
685 DW_OP_breg11 = 0x7b,
686 DW_OP_breg12 = 0x7c,
687 DW_OP_breg13 = 0x7d,
688 DW_OP_breg14 = 0x7e,
689 DW_OP_breg15 = 0x7f,
690 DW_OP_breg16 = 0x80,
691 DW_OP_breg17 = 0x81,
692 DW_OP_breg18 = 0x82,
693 DW_OP_breg19 = 0x83,
694 DW_OP_breg20 = 0x84,
695 DW_OP_breg21 = 0x85,
696 DW_OP_breg22 = 0x86,
697 DW_OP_breg23 = 0x87,
698 DW_OP_breg24 = 0x88,
699 DW_OP_breg25 = 0x89,
700 DW_OP_breg26 = 0x8a,
701 DW_OP_breg27 = 0x8b,
702 DW_OP_breg28 = 0x8c,
703 DW_OP_breg29 = 0x8d,
704 DW_OP_breg30 = 0x8e,
705 DW_OP_breg31 = 0x8f,
706 DW_OP_regx = 0x90,
707 DW_OP_fbreg = 0x91,
708 DW_OP_bregx = 0x92,
709 DW_OP_piece = 0x93,
710 DW_OP_deref_size = 0x94,
711 DW_OP_xderef_size = 0x95,
712 DW_OP_nop = 0x96,
713 DW_OP_push_object_address = 0x97,
714 DW_OP_call2 = 0x98,
715 DW_OP_call4 = 0x99,
716 DW_OP_call_ref = 0x9a,
717 DW_OP_form_tls_address = 0x9b,
718 DW_OP_call_frame_cfa = 0x9c,
719 DW_OP_bit_piece = 0x9d,
720 DW_OP_lo_user = 0xe0,
721 DW_OP_hi_user = 0xff,
722 DW_OP_GNU_push_tls_address = 0xe0,
723 DW_OP_GNU_uninit = 0xf0,
724 DW_OP_GNU_encoded_addr = 0xf1,
725 };
726
727 #define DW_EH_PE_native 0x00
728 #define DW_EH_PE_leb128 0x01
729 #define DW_EH_PE_data2 0x02
730 #define DW_EH_PE_data4 0x03
731 #define DW_EH_PE_data8 0x04
732 #define DW_EH_PE_signed 0x08
733 #define DW_EH_PE_abs 0x00
734 #define DW_EH_PE_pcrel 0x10
735 #define DW_EH_PE_textrel 0x20
736 #define DW_EH_PE_datarel 0x30
737 #define DW_EH_PE_funcrel 0x40
738 #define DW_EH_PE_aligned 0x50
739 #define DW_EH_PE_indirect 0x80
740 #define DW_EH_PE_omit 0xff
741
742 struct dwarf_eh_bases
743 {
744 void *tbase;
745 void *dbase;
746 void *func;
747 };
748
749 struct dwarf_cie
750 {
751 unsigned int length;
752 int id;
753 unsigned char version;
754 unsigned char augmentation[1];
755 };
756
757 struct dwarf_fde
758 {
759 unsigned int length;
760 unsigned int cie_offset;
761 };
762
763 extern const struct dwarf_fde *_Unwind_Find_FDE (void *, struct dwarf_eh_bases *);
764
765 static unsigned char dwarf_get_u1( const unsigned char **p )
766 {
767 return *(*p)++;
768 }
769
770 static unsigned short dwarf_get_u2( const unsigned char **p )
771 {
772 unsigned int ret = (*p)[0] | ((*p)[1] << 8);
773 (*p) += 2;
774 return ret;
775 }
776
777 static unsigned int dwarf_get_u4( const unsigned char **p )
778 {
779 unsigned int ret = (*p)[0] | ((*p)[1] << 8) | ((*p)[2] << 16) | ((*p)[3] << 24);
780 (*p) += 4;
781 return ret;
782 }
783
784 static ULONG64 dwarf_get_u8( const unsigned char **p )
785 {
786 ULONG64 low = dwarf_get_u4( p );
787 ULONG64 high = dwarf_get_u4( p );
788 return low | (high << 32);
789 }
790
791 static ULONG_PTR dwarf_get_uleb128( const unsigned char **p )
792 {
793 ULONG_PTR ret = 0;
794 unsigned int shift = 0;
795 unsigned char byte;
796
797 do
798 {
799 byte = **p;
800 ret |= (ULONG_PTR)(byte & 0x7f) << shift;
801 shift += 7;
802 (*p)++;
803 } while (byte & 0x80);
804 return ret;
805 }
806
807 static LONG_PTR dwarf_get_sleb128( const unsigned char **p )
808 {
809 ULONG_PTR ret = 0;
810 unsigned int shift = 0;
811 unsigned char byte;
812
813 do
814 {
815 byte = **p;
816 ret |= (ULONG_PTR)(byte & 0x7f) << shift;
817 shift += 7;
818 (*p)++;
819 } while (byte & 0x80);
820
821 if ((shift < 8 * sizeof(ret)) && (byte & 0x40)) ret |= -((ULONG_PTR)1 << shift);
822 return ret;
823 }
824
825 static ULONG_PTR dwarf_get_ptr( const unsigned char **p, unsigned char encoding )
826 {
827 ULONG_PTR base;
828
829 if (encoding == DW_EH_PE_omit) return 0;
830
831 switch (encoding & 0xf0)
832 {
833 case DW_EH_PE_abs:
834 base = 0;
835 break;
836 case DW_EH_PE_pcrel:
837 base = (ULONG_PTR)*p;
838 break;
839 default:
840 FIXME( "unsupported encoding %02x\n", encoding );
841 return 0;
842 }
843
844 switch (encoding & 0x0f)
845 {
846 case DW_EH_PE_native:
847 return base + dwarf_get_u8( p );
848 case DW_EH_PE_leb128:
849 return base + dwarf_get_uleb128( p );
850 case DW_EH_PE_data2:
851 return base + dwarf_get_u2( p );
852 case DW_EH_PE_data4:
853 return base + dwarf_get_u4( p );
854 case DW_EH_PE_data8:
855 return base + dwarf_get_u8( p );
856 case DW_EH_PE_signed|DW_EH_PE_leb128:
857 return base + dwarf_get_sleb128( p );
858 case DW_EH_PE_signed|DW_EH_PE_data2:
859 return base + (signed short)dwarf_get_u2( p );
860 case DW_EH_PE_signed|DW_EH_PE_data4:
861 return base + (signed int)dwarf_get_u4( p );
862 case DW_EH_PE_signed|DW_EH_PE_data8:
863 return base + (LONG64)dwarf_get_u8( p );
864 default:
865 FIXME( "unsupported encoding %02x\n", encoding );
866 return 0;
867 }
868 }
869
870 enum reg_rule
871 {
872 RULE_UNSET, /* not set at all */
873 RULE_UNDEFINED, /* undefined value */
874 RULE_SAME, /* same value as previous frame */
875 RULE_CFA_OFFSET, /* stored at cfa offset */
876 RULE_OTHER_REG, /* stored in other register */
877 RULE_EXPRESSION, /* address specified by expression */
878 RULE_VAL_EXPRESSION /* value specified by expression */
879 };
880
881 #define NB_FRAME_REGS 41
882 #define MAX_SAVED_STATES 16
883
884 struct frame_state
885 {
886 ULONG_PTR cfa_offset;
887 unsigned char cfa_reg;
888 enum reg_rule cfa_rule;
889 enum reg_rule rules[NB_FRAME_REGS];
890 ULONG64 regs[NB_FRAME_REGS];
891 };
892
893 struct frame_info
894 {
895 ULONG_PTR ip;
896 ULONG_PTR code_align;
897 LONG_PTR data_align;
898 unsigned char retaddr_reg;
899 unsigned char fde_encoding;
900 unsigned char signal_frame;
901 unsigned char state_sp;
902 struct frame_state state;
903 struct frame_state *state_stack;
904 };
905
906 static const char *dwarf_reg_names[NB_FRAME_REGS] =
907 {
908 /* 0-7 */ "%rax", "%rdx", "%rcx", "%rbx", "%rsi", "%rdi", "%rbp", "%rsp",
909 /* 8-16 */ "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rip",
910 /* 17-24 */ "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",
911 /* 25-32 */ "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15",
912 /* 33-40 */ "%st0", "%st1", "%st2", "%st3", "%st4", "%st5", "%st6", "%st7"
913 };
914
915 static BOOL valid_reg( ULONG_PTR reg )
916 {
917 if (reg >= NB_FRAME_REGS) FIXME( "unsupported reg %lx\n", reg );
918 return (reg < NB_FRAME_REGS);
919 }
920
921 static void execute_cfa_instructions( const unsigned char *ptr, const unsigned char *end,
922 ULONG_PTR last_ip, struct frame_info *info )
923 {
924 while (ptr < end && info->ip < last_ip + info->signal_frame)
925 {
926 enum dwarf_call_frame_info op = *ptr++;
927
928 if (op & 0xc0)
929 {
930 switch (op & 0xc0)
931 {
932 case DW_CFA_advance_loc:
933 {
934 ULONG_PTR offset = (op & 0x3f) * info->code_align;
935 TRACE( "%lx: DW_CFA_advance_loc %lu\n", info->ip, offset );
936 info->ip += offset;
937 break;
938 }
939 case DW_CFA_offset:
940 {
941 ULONG_PTR reg = op & 0x3f;
942 LONG_PTR offset = dwarf_get_uleb128( &ptr ) * info->data_align;
943 if (!valid_reg( reg )) break;
944 TRACE( "%lx: DW_CFA_offset %s, %ld\n", info->ip, dwarf_reg_names[reg], offset );
945 info->state.regs[reg] = offset;
946 info->state.rules[reg] = RULE_CFA_OFFSET;
947 break;
948 }
949 case DW_CFA_restore:
950 {
951 ULONG_PTR reg = op & 0x3f;
952 if (!valid_reg( reg )) break;
953 TRACE( "%lx: DW_CFA_restore %s\n", info->ip, dwarf_reg_names[reg] );
954 info->state.rules[reg] = RULE_UNSET;
955 break;
956 }
957 }
958 }
959 else switch (op)
960 {
961 case DW_CFA_nop:
962 break;
963 case DW_CFA_set_loc:
964 {
965 ULONG_PTR loc = dwarf_get_ptr( &ptr, info->fde_encoding );
966 TRACE( "%lx: DW_CFA_set_loc %lx\n", info->ip, loc );
967 info->ip = loc;
968 break;
969 }
970 case DW_CFA_advance_loc1:
971 {
972 ULONG_PTR offset = *ptr++ * info->code_align;
973 TRACE( "%lx: DW_CFA_advance_loc1 %lu\n", info->ip, offset );
974 info->ip += offset;
975 break;
976 }
977 case DW_CFA_advance_loc2:
978 {
979 ULONG_PTR offset = dwarf_get_u2( &ptr ) * info->code_align;
980 TRACE( "%lx: DW_CFA_advance_loc2 %lu\n", info->ip, offset );
981 info->ip += offset;
982 break;
983 }
984 case DW_CFA_advance_loc4:
985 {
986 ULONG_PTR offset = dwarf_get_u4( &ptr ) * info->code_align;
987 TRACE( "%lx: DW_CFA_advance_loc4 %lu\n", info->ip, offset );
988 info->ip += offset;
989 break;
990 }
991 case DW_CFA_offset_extended:
992 case DW_CFA_offset_extended_sf:
993 {
994 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
995 LONG_PTR offset = (op == DW_CFA_offset_extended) ? dwarf_get_uleb128( &ptr ) * info->data_align
996 : dwarf_get_sleb128( &ptr ) * info->data_align;
997 if (!valid_reg( reg )) break;
998 TRACE( "%lx: DW_CFA_offset_extended %s, %ld\n", info->ip, dwarf_reg_names[reg], offset );
999 info->state.regs[reg] = offset;
1000 info->state.rules[reg] = RULE_CFA_OFFSET;
1001 break;
1002 }
1003 case DW_CFA_restore_extended:
1004 {
1005 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1006 if (!valid_reg( reg )) break;
1007 TRACE( "%lx: DW_CFA_restore_extended %s\n", info->ip, dwarf_reg_names[reg] );
1008 info->state.rules[reg] = RULE_UNSET;
1009 break;
1010 }
1011 case DW_CFA_undefined:
1012 {
1013 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1014 if (!valid_reg( reg )) break;
1015 TRACE( "%lx: DW_CFA_undefined %s\n", info->ip, dwarf_reg_names[reg] );
1016 info->state.rules[reg] = RULE_UNDEFINED;
1017 break;
1018 }
1019 case DW_CFA_same_value:
1020 {
1021 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1022 if (!valid_reg( reg )) break;
1023 TRACE( "%lx: DW_CFA_same_value %s\n", info->ip, dwarf_reg_names[reg] );
1024 info->state.regs[reg] = reg;
1025 info->state.rules[reg] = RULE_SAME;
1026 break;
1027 }
1028 case DW_CFA_register:
1029 {
1030 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1031 ULONG_PTR reg2 = dwarf_get_uleb128( &ptr );
1032 if (!valid_reg( reg ) || !valid_reg( reg2 )) break;
1033 TRACE( "%lx: DW_CFA_register %s == %s\n", info->ip, dwarf_reg_names[reg], dwarf_reg_names[reg2] );
1034 info->state.regs[reg] = reg2;
1035 info->state.rules[reg] = RULE_OTHER_REG;
1036 break;
1037 }
1038 case DW_CFA_remember_state:
1039 TRACE( "%lx: DW_CFA_remember_state\n", info->ip );
1040 if (info->state_sp >= MAX_SAVED_STATES)
1041 FIXME( "%lx: DW_CFA_remember_state too many nested saves\n", info->ip );
1042 else
1043 info->state_stack[info->state_sp++] = info->state;
1044 break;
1045 case DW_CFA_restore_state:
1046 TRACE( "%lx: DW_CFA_restore_state\n", info->ip );
1047 if (!info->state_sp)
1048 FIXME( "%lx: DW_CFA_restore_state without corresponding save\n", info->ip );
1049 else
1050 info->state = info->state_stack[--info->state_sp];
1051 break;
1052 case DW_CFA_def_cfa:
1053 case DW_CFA_def_cfa_sf:
1054 {
1055 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1056 ULONG_PTR offset = (op == DW_CFA_def_cfa) ? dwarf_get_uleb128( &ptr )
1057 : dwarf_get_sleb128( &ptr ) * info->data_align;
1058 if (!valid_reg( reg )) break;
1059 TRACE( "%lx: DW_CFA_def_cfa %s, %lu\n", info->ip, dwarf_reg_names[reg], offset );
1060 info->state.cfa_reg = reg;
1061 info->state.cfa_offset = offset;
1062 info->state.cfa_rule = RULE_CFA_OFFSET;
1063 break;
1064 }
1065 case DW_CFA_def_cfa_register:
1066 {
1067 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1068 if (!valid_reg( reg )) break;
1069 TRACE( "%lx: DW_CFA_def_cfa_register %s\n", info->ip, dwarf_reg_names[reg] );
1070 info->state.cfa_reg = reg;
1071 info->state.cfa_rule = RULE_CFA_OFFSET;
1072 break;
1073 }
1074 case DW_CFA_def_cfa_offset:
1075 case DW_CFA_def_cfa_offset_sf:
1076 {
1077 ULONG_PTR offset = (op == DW_CFA_def_cfa_offset) ? dwarf_get_uleb128( &ptr )
1078 : dwarf_get_sleb128( &ptr ) * info->data_align;
1079 TRACE( "%lx: DW_CFA_def_cfa_offset %lu\n", info->ip, offset );
1080 info->state.cfa_offset = offset;
1081 info->state.cfa_rule = RULE_CFA_OFFSET;
1082 break;
1083 }
1084 case DW_CFA_def_cfa_expression:
1085 {
1086 ULONG_PTR expr = (ULONG_PTR)ptr;
1087 ULONG_PTR len = dwarf_get_uleb128( &ptr );
1088 TRACE( "%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info->ip, expr, expr+len );
1089 info->state.cfa_offset = expr;
1090 info->state.cfa_rule = RULE_VAL_EXPRESSION;
1091 ptr += len;
1092 break;
1093 }
1094 case DW_CFA_expression:
1095 case DW_CFA_val_expression:
1096 {
1097 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1098 ULONG_PTR expr = (ULONG_PTR)ptr;
1099 ULONG_PTR len = dwarf_get_uleb128( &ptr );
1100 if (!valid_reg( reg )) break;
1101 TRACE( "%lx: DW_CFA_%sexpression %s %lx-%lx\n",
1102 info->ip, (op == DW_CFA_expression) ? "" : "val_", dwarf_reg_names[reg], expr, expr+len );
1103 info->state.regs[reg] = expr;
1104 info->state.rules[reg] = (op == DW_CFA_expression) ? RULE_EXPRESSION : RULE_VAL_EXPRESSION;
1105 ptr += len;
1106 break;
1107 }
1108 default:
1109 FIXME( "%lx: unknown CFA opcode %02x\n", info->ip, op );
1110 break;
1111 }
1112 }
1113 }
1114
1115 /* retrieve a context register from its dwarf number */
1116 static void *get_context_reg( CONTEXT *context, ULONG_PTR dw_reg )
1117 {
1118 switch (dw_reg)
1119 {
1120 case 0: return &context->Rax;
1121 case 1: return &context->Rdx;
1122 case 2: return &context->Rcx;
1123 case 3: return &context->Rbx;
1124 case 4: return &context->Rsi;
1125 case 5: return &context->Rdi;
1126 case 6: return &context->Rbp;
1127 case 7: return &context->Rsp;
1128 case 8: return &context->R8;
1129 case 9: return &context->R9;
1130 case 10: return &context->R10;
1131 case 11: return &context->R11;
1132 case 12: return &context->R12;
1133 case 13: return &context->R13;
1134 case 14: return &context->R14;
1135 case 15: return &context->R15;
1136 case 16: return &context->Rip;
1137 case 17: return &context->u.s.Xmm0;
1138 case 18: return &context->u.s.Xmm1;
1139 case 19: return &context->u.s.Xmm2;
1140 case 20: return &context->u.s.Xmm3;
1141 case 21: return &context->u.s.Xmm4;
1142 case 22: return &context->u.s.Xmm5;
1143 case 23: return &context->u.s.Xmm6;
1144 case 24: return &context->u.s.Xmm7;
1145 case 25: return &context->u.s.Xmm8;
1146 case 26: return &context->u.s.Xmm9;
1147 case 27: return &context->u.s.Xmm10;
1148 case 28: return &context->u.s.Xmm11;
1149 case 29: return &context->u.s.Xmm12;
1150 case 30: return &context->u.s.Xmm13;
1151 case 31: return &context->u.s.Xmm14;
1152 case 32: return &context->u.s.Xmm15;
1153 case 33: return &context->u.s.Legacy[0];
1154 case 34: return &context->u.s.Legacy[1];
1155 case 35: return &context->u.s.Legacy[2];
1156 case 36: return &context->u.s.Legacy[3];
1157 case 37: return &context->u.s.Legacy[4];
1158 case 38: return &context->u.s.Legacy[5];
1159 case 39: return &context->u.s.Legacy[6];
1160 case 40: return &context->u.s.Legacy[7];
1161 default: return NULL;
1162 }
1163 }
1164
1165 /* set a context register from its dwarf number */
1166 static void set_context_reg( CONTEXT *context, ULONG_PTR dw_reg, void *val )
1167 {
1168 switch (dw_reg)
1169 {
1170 case 0: context->Rax = *(ULONG64 *)val; break;
1171 case 1: context->Rdx = *(ULONG64 *)val; break;
1172 case 2: context->Rcx = *(ULONG64 *)val; break;
1173 case 3: context->Rbx = *(ULONG64 *)val; break;
1174 case 4: context->Rsi = *(ULONG64 *)val; break;
1175 case 5: context->Rdi = *(ULONG64 *)val; break;
1176 case 6: context->Rbp = *(ULONG64 *)val; break;
1177 case 7: context->Rsp = *(ULONG64 *)val; break;
1178 case 8: context->R8 = *(ULONG64 *)val; break;
1179 case 9: context->R9 = *(ULONG64 *)val; break;
1180 case 10: context->R10 = *(ULONG64 *)val; break;
1181 case 11: context->R11 = *(ULONG64 *)val; break;
1182 case 12: context->R12 = *(ULONG64 *)val; break;
1183 case 13: context->R13 = *(ULONG64 *)val; break;
1184 case 14: context->R14 = *(ULONG64 *)val; break;
1185 case 15: context->R15 = *(ULONG64 *)val; break;
1186 case 16: context->Rip = *(ULONG64 *)val; break;
1187 case 17: memcpy( &context->u.s.Xmm0, val, sizeof(M128A) ); break;
1188 case 18: memcpy( &context->u.s.Xmm1, val, sizeof(M128A) ); break;
1189 case 19: memcpy( &context->u.s.Xmm2, val, sizeof(M128A) ); break;
1190 case 20: memcpy( &context->u.s.Xmm3, val, sizeof(M128A) ); break;
1191 case 21: memcpy( &context->u.s.Xmm4, val, sizeof(M128A) ); break;
1192 case 22: memcpy( &context->u.s.Xmm5, val, sizeof(M128A) ); break;
1193 case 23: memcpy( &context->u.s.Xmm6, val, sizeof(M128A) ); break;
1194 case 24: memcpy( &context->u.s.Xmm7, val, sizeof(M128A) ); break;
1195 case 25: memcpy( &context->u.s.Xmm8, val, sizeof(M128A) ); break;
1196 case 26: memcpy( &context->u.s.Xmm9, val, sizeof(M128A) ); break;
1197 case 27: memcpy( &context->u.s.Xmm10, val, sizeof(M128A) ); break;
1198 case 28: memcpy( &context->u.s.Xmm11, val, sizeof(M128A) ); break;
1199 case 29: memcpy( &context->u.s.Xmm12, val, sizeof(M128A) ); break;
1200 case 30: memcpy( &context->u.s.Xmm13, val, sizeof(M128A) ); break;
1201 case 31: memcpy( &context->u.s.Xmm14, val, sizeof(M128A) ); break;
1202 case 32: memcpy( &context->u.s.Xmm15, val, sizeof(M128A) ); break;
1203 case 33: memcpy( &context->u.s.Legacy[0], val, sizeof(M128A) ); break;
1204 case 34: memcpy( &context->u.s.Legacy[1], val, sizeof(M128A) ); break;
1205 case 35: memcpy( &context->u.s.Legacy[2], val, sizeof(M128A) ); break;
1206 case 36: memcpy( &context->u.s.Legacy[3], val, sizeof(M128A) ); break;
1207 case 37: memcpy( &context->u.s.Legacy[4], val, sizeof(M128A) ); break;
1208 case 38: memcpy( &context->u.s.Legacy[5], val, sizeof(M128A) ); break;
1209 case 39: memcpy( &context->u.s.Legacy[6], val, sizeof(M128A) ); break;
1210 case 40: memcpy( &context->u.s.Legacy[7], val, sizeof(M128A) ); break;
1211 }
1212 }
1213
1214 static ULONG_PTR eval_expression( const unsigned char *p, CONTEXT *context )
1215 {
1216 ULONG_PTR reg, tmp, stack[64];
1217 int sp = -1;
1218 ULONG_PTR len = dwarf_get_uleb128(&p);
1219 const unsigned char *end = p + len;
1220
1221 while (p < end)
1222 {
1223 unsigned char opcode = dwarf_get_u1(&p);
1224
1225 if (opcode >= DW_OP_lit0 && opcode <= DW_OP_lit31)
1226 stack[++sp] = opcode - DW_OP_lit0;
1227 else if (opcode >= DW_OP_reg0 && opcode <= DW_OP_reg31)
1228 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, opcode - DW_OP_reg0 );
1229 else if (opcode >= DW_OP_breg0 && opcode <= DW_OP_breg31)
1230 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, opcode - DW_OP_breg0 ) + dwarf_get_sleb128(&p);
1231 else switch (opcode)
1232 {
1233 case DW_OP_nop: break;
1234 case DW_OP_addr: stack[++sp] = dwarf_get_u8(&p); break;
1235 case DW_OP_const1u: stack[++sp] = dwarf_get_u1(&p); break;
1236 case DW_OP_const1s: stack[++sp] = (signed char)dwarf_get_u1(&p); break;
1237 case DW_OP_const2u: stack[++sp] = dwarf_get_u2(&p); break;
1238 case DW_OP_const2s: stack[++sp] = (short)dwarf_get_u2(&p); break;
1239 case DW_OP_const4u: stack[++sp] = dwarf_get_u4(&p); break;
1240 case DW_OP_const4s: stack[++sp] = (signed int)dwarf_get_u4(&p); break;
1241 case DW_OP_const8u: stack[++sp] = dwarf_get_u8(&p); break;
1242 case DW_OP_const8s: stack[++sp] = (LONG_PTR)dwarf_get_u8(&p); break;
1243 case DW_OP_constu: stack[++sp] = dwarf_get_uleb128(&p); break;
1244 case DW_OP_consts: stack[++sp] = dwarf_get_sleb128(&p); break;
1245 case DW_OP_deref: stack[sp] = *(ULONG_PTR *)stack[sp]; break;
1246 case DW_OP_dup: stack[sp + 1] = stack[sp]; sp++; break;
1247 case DW_OP_drop: sp--; break;
1248 case DW_OP_over: stack[sp + 1] = stack[sp - 1]; sp++; break;
1249 case DW_OP_pick: stack[sp + 1] = stack[sp - dwarf_get_u1(&p)]; sp++; break;
1250 case DW_OP_swap: tmp = stack[sp]; stack[sp] = stack[sp-1]; stack[sp-1] = tmp; break;
1251 case DW_OP_rot: tmp = stack[sp]; stack[sp] = stack[sp-1]; stack[sp-1] = stack[sp-2]; stack[sp-2] = tmp; break;
1252 case DW_OP_abs: stack[sp] = labs(stack[sp]); break;
1253 case DW_OP_neg: stack[sp] = -stack[sp]; break;
1254 case DW_OP_not: stack[sp] = ~stack[sp]; break;
1255 case DW_OP_and: stack[sp-1] &= stack[sp]; sp--; break;
1256 case DW_OP_or: stack[sp-1] |= stack[sp]; sp--; break;
1257 case DW_OP_minus: stack[sp-1] -= stack[sp]; sp--; break;
1258 case DW_OP_mul: stack[sp-1] *= stack[sp]; sp--; break;
1259 case DW_OP_plus: stack[sp-1] += stack[sp]; sp--; break;
1260 case DW_OP_xor: stack[sp-1] ^= stack[sp]; sp--; break;
1261 case DW_OP_shl: stack[sp-1] <<= stack[sp]; sp--; break;
1262 case DW_OP_shr: stack[sp-1] >>= stack[sp]; sp--; break;
1263 case DW_OP_plus_uconst: stack[sp] += dwarf_get_uleb128(&p); break;
1264 case DW_OP_shra: stack[sp-1] = (LONG_PTR)stack[sp-1] / (1 << stack[sp]); sp--; break;
1265 case DW_OP_div: stack[sp-1] = (LONG_PTR)stack[sp-1] / (LONG_PTR)stack[sp]; sp--; break;
1266 case DW_OP_mod: stack[sp-1] = (LONG_PTR)stack[sp-1] % (LONG_PTR)stack[sp]; sp--; break;
1267 case DW_OP_ge: stack[sp-1] = ((LONG_PTR)stack[sp-1] >= (LONG_PTR)stack[sp]); sp--; break;
1268 case DW_OP_gt: stack[sp-1] = ((LONG_PTR)stack[sp-1] > (LONG_PTR)stack[sp]); sp--; break;
1269 case DW_OP_le: stack[sp-1] = ((LONG_PTR)stack[sp-1] <= (LONG_PTR)stack[sp]); sp--; break;
1270 case DW_OP_lt: stack[sp-1] = ((LONG_PTR)stack[sp-1] < (LONG_PTR)stack[sp]); sp--; break;
1271 case DW_OP_eq: stack[sp-1] = (stack[sp-1] == stack[sp]); sp--; break;
1272 case DW_OP_ne: stack[sp-1] = (stack[sp-1] != stack[sp]); sp--; break;
1273 case DW_OP_skip: tmp = (short)dwarf_get_u2(&p); p += tmp; break;
1274 case DW_OP_bra: tmp = (short)dwarf_get_u2(&p); if (!stack[sp--]) p += tmp; break;
1275 case DW_OP_GNU_encoded_addr: tmp = *p++; stack[++sp] = dwarf_get_ptr( &p, tmp ); break;
1276 case DW_OP_regx: stack[++sp] = *(ULONG_PTR *)get_context_reg( context, dwarf_get_uleb128(&p) ); break;
1277 case DW_OP_bregx:
1278 reg = dwarf_get_uleb128(&p);
1279 tmp = dwarf_get_sleb128(&p);
1280 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, reg ) + tmp;
1281 break;
1282 case DW_OP_deref_size:
1283 switch (*p++)
1284 {
1285 case 1: stack[sp] = *(unsigned char *)stack[sp]; break;
1286 case 2: stack[sp] = *(unsigned short *)stack[sp]; break;
1287 case 4: stack[sp] = *(unsigned int *)stack[sp]; break;
1288 case 8: stack[sp] = *(ULONG_PTR *)stack[sp]; break;
1289 }
1290 break;
1291 default:
1292 FIXME( "unhandled opcode %02x\n", opcode );
1293 }
1294 }
1295 return stack[sp];
1296 }
1297
1298 /* apply the computed frame info to the actual context */
1299 static void apply_frame_state( CONTEXT *context, struct frame_state *state )
1300 {
1301 unsigned int i;
1302 ULONG_PTR cfa, value;
1303 CONTEXT new_context = *context;
1304
1305 switch (state->cfa_rule)
1306 {
1307 case RULE_EXPRESSION:
1308 cfa = *(ULONG_PTR *)eval_expression( (const unsigned char *)state->cfa_offset, context );
1309 break;
1310 case RULE_VAL_EXPRESSION:
1311 cfa = eval_expression( (const unsigned char *)state->cfa_offset, context );
1312 break;
1313 default:
1314 cfa = *(ULONG_PTR *)get_context_reg( context, state->cfa_reg ) + state->cfa_offset;
1315 break;
1316 }
1317 if (!cfa) return;
1318
1319 for (i = 0; i < NB_FRAME_REGS; i++)
1320 {
1321 switch (state->rules[i])
1322 {
1323 case RULE_UNSET:
1324 case RULE_UNDEFINED:
1325 case RULE_SAME:
1326 break;
1327 case RULE_CFA_OFFSET:
1328 set_context_reg( &new_context, i, (char *)cfa + state->regs[i] );
1329 break;
1330 case RULE_OTHER_REG:
1331 set_context_reg( &new_context, i, get_context_reg( context, state->regs[i] ));
1332 break;
1333 case RULE_EXPRESSION:
1334 value = eval_expression( (const unsigned char *)state->regs[i], context );
1335 set_context_reg( &new_context, i, (void *)value );
1336 break;
1337 case RULE_VAL_EXPRESSION:
1338 value = eval_expression( (const unsigned char *)state->regs[i], context );
1339 set_context_reg( &new_context, i, &value );
1340 break;
1341 }
1342 }
1343 new_context.Rsp = cfa;
1344 *context = new_context;
1345 }
1346
1347
1348 /***********************************************************************
1349 * dwarf_virtual_unwind
1350 *
1351 * Equivalent of RtlVirtualUnwind for builtin modules.
1352 */
1353 static NTSTATUS dwarf_virtual_unwind( ULONG64 ip, ULONG64 *frame,CONTEXT *context,
1354 const struct dwarf_fde *fde, const struct dwarf_eh_bases *bases,
1355 PEXCEPTION_ROUTINE *handler, void **handler_data )
1356 {
1357 const struct dwarf_cie *cie;
1358 const unsigned char *ptr, *augmentation, *end;
1359 ULONG_PTR len, code_end;
1360 struct frame_info info;
1361 struct frame_state state_stack[MAX_SAVED_STATES];
1362 int aug_z_format = 0;
1363 unsigned char lsda_encoding = DW_EH_PE_omit;
1364
1365 memset( &info, 0, sizeof(info) );
1366 info.state_stack = state_stack;
1367 info.ip = (ULONG_PTR)bases->func;
1368 *handler = NULL;
1369
1370 cie = (const struct dwarf_cie *)((const char *)&fde->cie_offset - fde->cie_offset);
1371
1372 /* parse the CIE first */
1373
1374 if (cie->version != 1 && cie->version != 3)
1375 {
1376 FIXME( "unknown CIE version %u at %p\n", cie->version, cie );
1377 return STATUS_INVALID_DISPOSITION;
1378 }
1379 ptr = cie->augmentation + strlen((const char *)cie->augmentation) + 1;
1380
1381 info.code_align = dwarf_get_uleb128( &ptr );
1382 info.data_align = dwarf_get_sleb128( &ptr );
1383 if (cie->version == 1)
1384 info.retaddr_reg = *ptr++;
1385 else
1386 info.retaddr_reg = dwarf_get_uleb128( &ptr );
1387 info.state.cfa_rule = RULE_CFA_OFFSET;
1388
1389 TRACE( "function %lx base %p cie %p len %x id %x version %x aug '%s' code_align %lu data_align %ld retaddr %s\n",
1390 ip, bases->func, cie, cie->length, cie->id, cie->version, cie->augmentation,
1391 info.code_align, info.data_align, dwarf_reg_names[info.retaddr_reg] );
1392
1393 end = NULL;
1394 for (augmentation = cie->augmentation; *augmentation; augmentation++)
1395 {
1396 switch (*augmentation)
1397 {
1398 case 'z':
1399 len = dwarf_get_uleb128( &ptr );
1400 end = ptr + len;
1401 aug_z_format = 1;
1402 continue;
1403 case 'L':
1404 lsda_encoding = *ptr++;
1405 continue;
1406 case 'P':
1407 {
1408 unsigned char encoding = *ptr++;
1409 *handler = (void *)dwarf_get_ptr( &ptr, encoding );
1410 continue;
1411 }
1412 case 'R':
1413 info.fde_encoding = *ptr++;
1414 continue;
1415 case 'S':
1416 info.signal_frame = 1;
1417 continue;
1418 }
1419 FIXME( "unknown augmentation '%c'\n", *augmentation );
1420 if (!end) return STATUS_INVALID_DISPOSITION; /* cannot continue */
1421 break;
1422 }
1423 if (end) ptr = end;
1424
1425 end = (const unsigned char *)(&cie->length + 1) + cie->length;
1426 execute_cfa_instructions( ptr, end, ip, &info );
1427
1428 ptr = (const unsigned char *)(fde + 1);
1429 info.ip = dwarf_get_ptr( &ptr, info.fde_encoding ); /* fde code start */
1430 code_end = info.ip + dwarf_get_ptr( &ptr, info.fde_encoding & 0x0f ); /* fde code length */
1431
1432 if (aug_z_format) /* get length of augmentation data */
1433 {
1434 len = dwarf_get_uleb128( &ptr );
1435 end = ptr + len;
1436 }
1437 else end = NULL;
1438
1439 *handler_data = (void *)dwarf_get_ptr( &ptr, lsda_encoding );
1440 if (end) ptr = end;
1441
1442 end = (const unsigned char *)(&fde->length + 1) + fde->length;
1443 TRACE( "fde %p len %x personality %p lsda %p code %lx-%lx\n",
1444 fde, fde->length, *handler, *handler_data, info.ip, code_end );
1445 execute_cfa_instructions( ptr, end, ip, &info );
1446 *frame = context->Rsp;
1447 apply_frame_state( context, &info.state );
1448
1449 TRACE( "next function rip=%016lx\n", context->Rip );
1450 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1451 context->Rax, context->Rbx, context->Rcx, context->Rdx );
1452 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1453 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
1454 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1455 context->R8, context->R9, context->R10, context->R11 );
1456 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1457 context->R12, context->R13, context->R14, context->R15 );
1458
1459 return STATUS_SUCCESS;
1460 }
1461
1462
1463 #ifdef HAVE_LIBUNWIND
1464 /***********************************************************************
1465 * libunwind_virtual_unwind
1466 *
1467 * Equivalent of RtlVirtualUnwind for builtin modules.
1468 */
1469 static NTSTATUS libunwind_virtual_unwind( ULONG64 ip, BOOL* got_info, ULONG64 *frame, CONTEXT *context,
1470 PEXCEPTION_ROUTINE *handler, void **handler_data )
1471 {
1472 unw_context_t unw_context;
1473 unw_cursor_t cursor;
1474 unw_proc_info_t info;
1475 int rc;
1476
1477 #ifdef __APPLE__
1478 rc = unw_getcontext( &unw_context );
1479 if (rc == UNW_ESUCCESS)
1480 rc = unw_init_local( &cursor, &unw_context );
1481 if (rc == UNW_ESUCCESS)
1482 {
1483 unw_set_reg( &cursor, UNW_REG_IP, context->Rip );
1484 unw_set_reg( &cursor, UNW_REG_SP, context->Rsp );
1485 unw_set_reg( &cursor, UNW_X86_64_RAX, context->Rax );
1486 unw_set_reg( &cursor, UNW_X86_64_RDX, context->Rdx );
1487 unw_set_reg( &cursor, UNW_X86_64_RCX, context->Rcx );
1488 unw_set_reg( &cursor, UNW_X86_64_RBX, context->Rbx );
1489 unw_set_reg( &cursor, UNW_X86_64_RSI, context->Rsi );
1490 unw_set_reg( &cursor, UNW_X86_64_RDI, context->Rdi );
1491 unw_set_reg( &cursor, UNW_X86_64_RBP, context->Rbp );
1492 unw_set_reg( &cursor, UNW_X86_64_R8, context->R8 );
1493 unw_set_reg( &cursor, UNW_X86_64_R9, context->R9 );
1494 unw_set_reg( &cursor, UNW_X86_64_R10, context->R10 );
1495 unw_set_reg( &cursor, UNW_X86_64_R11, context->R11 );
1496 unw_set_reg( &cursor, UNW_X86_64_R12, context->R12 );
1497 unw_set_reg( &cursor, UNW_X86_64_R13, context->R13 );
1498 unw_set_reg( &cursor, UNW_X86_64_R14, context->R14 );
1499 unw_set_reg( &cursor, UNW_X86_64_R15, context->R15 );
1500 }
1501 #else
1502 set_sigcontext( context, &unw_context );
1503 rc = unw_init_local( &cursor, &unw_context );
1504 #endif
1505 if (rc != UNW_ESUCCESS)
1506 {
1507 WARN( "setup failed: %d\n", rc );
1508 return STATUS_INVALID_DISPOSITION;
1509 }
1510
1511 rc = unw_get_proc_info(&cursor, &info);
1512 if (rc != UNW_ESUCCESS && rc != UNW_ENOINFO)
1513 {
1514 WARN( "failed to get info: %d\n", rc );
1515 return STATUS_INVALID_DISPOSITION;
1516 }
1517 if (rc == UNW_ENOINFO || ip < info.start_ip || ip > info.end_ip || info.end_ip == info.start_ip + 1)
1518 {
1519 *got_info = FALSE;
1520 return STATUS_SUCCESS;
1521 }
1522
1523 TRACE( "ip %#lx function %#lx-%#lx personality %#lx lsda %#lx fde %#lx\n",
1524 ip, (unsigned long)info.start_ip, (unsigned long)info.end_ip, (unsigned long)info.handler,
1525 (unsigned long)info.lsda, (unsigned long)info.unwind_info );
1526
1527 if (!(rc = unw_step( &cursor )))
1528 {
1529 WARN( "last frame\n" );
1530 *got_info = FALSE;
1531 return STATUS_SUCCESS;
1532 }
1533 if (rc < 0)
1534 {
1535 WARN( "failed to unwind: %d\n", rc );
1536 return STATUS_INVALID_DISPOSITION;
1537 }
1538
1539 *frame = context->Rsp;
1540 unw_get_reg( &cursor, UNW_REG_IP, (unw_word_t *)&context->Rip );
1541 unw_get_reg( &cursor, UNW_REG_SP, (unw_word_t *)&context->Rsp );
1542 unw_get_reg( &cursor, UNW_X86_64_RAX, (unw_word_t *)&context->Rax );
1543 unw_get_reg( &cursor, UNW_X86_64_RDX, (unw_word_t *)&context->Rdx );
1544 unw_get_reg( &cursor, UNW_X86_64_RCX, (unw_word_t *)&context->Rcx );
1545 unw_get_reg( &cursor, UNW_X86_64_RBX, (unw_word_t *)&context->Rbx );
1546 unw_get_reg( &cursor, UNW_X86_64_RSI, (unw_word_t *)&context->Rsi );
1547 unw_get_reg( &cursor, UNW_X86_64_RDI, (unw_word_t *)&context->Rdi );
1548 unw_get_reg( &cursor, UNW_X86_64_RBP, (unw_word_t *)&context->Rbp );
1549 unw_get_reg( &cursor, UNW_X86_64_R8, (unw_word_t *)&context->R8 );
1550 unw_get_reg( &cursor, UNW_X86_64_R9, (unw_word_t *)&context->R9 );
1551 unw_get_reg( &cursor, UNW_X86_64_R10, (unw_word_t *)&context->R10 );
1552 unw_get_reg( &cursor, UNW_X86_64_R11, (unw_word_t *)&context->R11 );
1553 unw_get_reg( &cursor, UNW_X86_64_R12, (unw_word_t *)&context->R12 );
1554 unw_get_reg( &cursor, UNW_X86_64_R13, (unw_word_t *)&context->R13 );
1555 unw_get_reg( &cursor, UNW_X86_64_R14, (unw_word_t *)&context->R14 );
1556 unw_get_reg( &cursor, UNW_X86_64_R15, (unw_word_t *)&context->R15 );
1557 *handler = (void*)info.handler;
1558 *handler_data = (void*)info.lsda;
1559 *got_info = TRUE;
1560
1561 TRACE( "next function rip=%016lx\n", context->Rip );
1562 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1563 context->Rax, context->Rbx, context->Rcx, context->Rdx );
1564 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1565 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
1566 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1567 context->R8, context->R9, context->R10, context->R11 );
1568 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1569 context->R12, context->R13, context->R14, context->R15 );
1570
1571 return STATUS_SUCCESS;
1572 }
1573 #endif
1574
1575
1576 /***********************************************************************
1577 * virtual_unwind
1578 */
1579 static NTSTATUS virtual_unwind( ULONG type, DISPATCHER_CONTEXT *dispatch, CONTEXT *context )
1580 {
1581 LDR_MODULE *module;
1582 NTSTATUS status;
1583
1584 dispatch->ImageBase = 0;
1585 dispatch->ScopeIndex = 0;
1586 dispatch->ControlPc = context->Rip;
1587
1588 /* first look for PE exception information */
1589
1590 if ((dispatch->FunctionEntry = lookup_function_info( context->Rip, &dispatch->ImageBase, &module )))
1591 {
1592 dispatch->LanguageHandler = RtlVirtualUnwind( type, dispatch->ImageBase, context->Rip,
1593 dispatch->FunctionEntry, context,
1594 &dispatch->HandlerData, &dispatch->EstablisherFrame,
1595 NULL );
1596 return STATUS_SUCCESS;
1597 }
1598
1599 /* then look for host system exception information */
1600
1601 if (!module || (module->Flags & LDR_WINE_INTERNAL))
1602 {
1603 BOOL got_info = FALSE;
1604 struct dwarf_eh_bases bases;
1605 const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context->Rip - 1), &bases );
1606
1607 if (fde)
1608 {
1609 status = dwarf_virtual_unwind( context->Rip, &dispatch->EstablisherFrame, context, fde,
1610 &bases, &dispatch->LanguageHandler, &dispatch->HandlerData );
1611 if (status != STATUS_SUCCESS) return status;
1612 got_info = TRUE;
1613 }
1614 #ifdef HAVE_LIBUNWIND
1615 else
1616 {
1617 status = libunwind_virtual_unwind( context->Rip, &got_info, &dispatch->EstablisherFrame,
1618 context, &dispatch->LanguageHandler, &dispatch->HandlerData );
1619 if (status != STATUS_SUCCESS) return status;
1620 }
1621 #endif
1622 if (got_info)
1623 {
1624 if (dispatch->LanguageHandler && !module)
1625 {
1626 FIXME( "calling personality routine in system library not supported yet\n" );
1627 dispatch->LanguageHandler = NULL;
1628 }
1629 return STATUS_SUCCESS;
1630 }
1631 }
1632 else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
1633
1634 /* no exception information, treat as a leaf function */
1635
1636 dispatch->EstablisherFrame = context->Rsp;
1637 dispatch->LanguageHandler = NULL;
1638 context->Rip = *(ULONG64 *)context->Rsp;
1639 context->Rsp = context->Rsp + sizeof(ULONG64);
1640 return STATUS_SUCCESS;
1641 }
1642
1643 /***********************************************************************
1644 * dispatch_signal
1645 */
1646 static inline int dispatch_signal(unsigned int sig)
1647 {
1648 if (handlers[sig] == NULL) return 0;
1649 return handlers[sig](sig);
1650 }
1651
1652 /***********************************************************************
1653 * get_signal_stack
1654 *
1655 * Get the base of the signal stack for the current thread.
1656 */
1657 static inline void *get_signal_stack(void)
1658 {
1659 return (char *)NtCurrentTeb() + teb_size;
1660 }
1661
1662 /***********************************************************************
1663 * is_inside_signal_stack
1664 *
1665 * Check if pointer is inside the signal stack.
1666 */
1667 static inline BOOL is_inside_signal_stack( void *ptr )
1668 {
1669 return ((char *)ptr >= (char *)get_signal_stack() &&
1670 (char *)ptr < (char *)get_signal_stack() + signal_stack_size);
1671 }
1672
1673 /***********************************************************************
1674 * save_context
1675 *
1676 * Set the register values from a sigcontext.
1677 */
1678 static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
1679 {
1680 context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS;
1681 context->Rax = RAX_sig(sigcontext);
1682 context->Rcx = RCX_sig(sigcontext);
1683 context->Rdx = RDX_sig(sigcontext);
1684 context->Rbx = RBX_sig(sigcontext);
1685 context->Rsp = RSP_sig(sigcontext);
1686 context->Rbp = RBP_sig(sigcontext);
1687 context->Rsi = RSI_sig(sigcontext);
1688 context->Rdi = RDI_sig(sigcontext);
1689 context->R8 = R8_sig(sigcontext);
1690 context->R9 = R9_sig(sigcontext);
1691 context->R10 = R10_sig(sigcontext);
1692 context->R11 = R11_sig(sigcontext);
1693 context->R12 = R12_sig(sigcontext);
1694 context->R13 = R13_sig(sigcontext);
1695 context->R14 = R14_sig(sigcontext);
1696 context->R15 = R15_sig(sigcontext);
1697 context->Rip = RIP_sig(sigcontext);
1698 context->SegCs = CS_sig(sigcontext);
1699 context->SegFs = FS_sig(sigcontext);
1700 context->SegGs = GS_sig(sigcontext);
1701 context->EFlags = EFL_sig(sigcontext);
1702 #ifdef DS_sig
1703 context->SegDs = DS_sig(sigcontext);
1704 #else
1705 __asm__("movw %%ds,%0" : "=m" (context->SegDs));
1706 #endif
1707 #ifdef ES_sig
1708 context->SegEs = ES_sig(sigcontext);
1709 #else
1710 __asm__("movw %%es,%0" : "=m" (context->SegEs));
1711 #endif
1712 #ifdef SS_sig
1713 context->SegSs = SS_sig(sigcontext);
1714 #else
1715 __asm__("movw %%ss,%0" : "=m" (context->SegSs));
1716 #endif
1717 context->Dr0 = amd64_thread_data()->dr0;
1718 context->Dr1 = amd64_thread_data()->dr1;
1719 context->Dr2 = amd64_thread_data()->dr2;
1720 context->Dr3 = amd64_thread_data()->dr3;
1721 context->Dr6 = amd64_thread_data()->dr6;
1722 context->Dr7 = amd64_thread_data()->dr7;
1723 if (FPU_sig(sigcontext))
1724 {
1725 context->ContextFlags |= CONTEXT_FLOATING_POINT;
1726 context->u.FltSave = *FPU_sig(sigcontext);
1727 context->MxCsr = context->u.FltSave.MxCsr;
1728 }
1729 }
1730
1731
1732 /***********************************************************************
1733 * restore_context
1734 *
1735 * Build a sigcontext from the register values.
1736 */
1737 static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
1738 {
1739 amd64_thread_data()->dr0 = context->Dr0;
1740 amd64_thread_data()->dr1 = context->Dr1;
1741 amd64_thread_data()->dr2 = context->Dr2;
1742 amd64_thread_data()->dr3 = context->Dr3;
1743 amd64_thread_data()->dr6 = context->Dr6;
1744 amd64_thread_data()->dr7 = context->Dr7;
1745 set_sigcontext( context, sigcontext );
1746 if (FPU_sig(sigcontext)) *FPU_sig(sigcontext) = context->u.FltSave;
1747 }
1748
1749
1750 /**************************************************************************
1751 * __chkstk (NTDLL.@)
1752 *
1753 * Supposed to touch all the stack pages, but we shouldn't need that.
1754 */
1755 __ASM_GLOBAL_FUNC( __chkstk, "ret" );
1756
1757
1758 /***********************************************************************
1759 * RtlCaptureContext (NTDLL.@)
1760 */
1761 __ASM_GLOBAL_FUNC( RtlCaptureContext,
1762 "pushfq\n\t"
1763 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
1764 "movl $0x001000f,0x30(%rcx)\n\t" /* context->ContextFlags */
1765 "stmxcsr 0x34(%rcx)\n\t" /* context->MxCsr */
1766 "movw %cs,0x38(%rcx)\n\t" /* context->SegCs */
1767 "movw %ds,0x3a(%rcx)\n\t" /* context->SegDs */
1768 "movw %es,0x3c(%rcx)\n\t" /* context->SegEs */
1769 "movw %fs,0x3e(%rcx)\n\t" /* context->SegFs */
1770 "movw %gs,0x40(%rcx)\n\t" /* context->SegGs */
1771 "movw %ss,0x42(%rcx)\n\t" /* context->SegSs */
1772 "popq 0x44(%rcx)\n\t" /* context->Eflags */
1773 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
1774 "movq %rax,0x78(%rcx)\n\t" /* context->Rax */
1775 "movq %rcx,0x80(%rcx)\n\t" /* context->Rcx */
1776 "movq %rdx,0x88(%rcx)\n\t" /* context->Rdx */
1777 "movq %rbx,0x90(%rcx)\n\t" /* context->Rbx */
1778 "leaq 8(%rsp),%rax\n\t"
1779 "movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
1780 "movq %rbp,0xa0(%rcx)\n\t" /* context->Rbp */
1781 "movq %rsi,0xa8(%rcx)\n\t" /* context->Rsi */
1782 "movq %rdi,0xb0(%rcx)\n\t" /* context->Rdi */
1783 "movq %r8,0xb8(%rcx)\n\t" /* context->R8 */
1784 "movq %r9,0xc0(%rcx)\n\t" /* context->R9 */
1785 "movq %r10,0xc8(%rcx)\n\t" /* context->R10 */
1786 "movq %r11,0xd0(%rcx)\n\t" /* context->R11 */
1787 "movq %r12,0xd8(%rcx)\n\t" /* context->R12 */
1788 "movq %r13,0xe0(%rcx)\n\t" /* context->R13 */
1789 "movq %r14,0xe8(%rcx)\n\t" /* context->R14 */
1790 "movq %r15,0xf0(%rcx)\n\t" /* context->R15 */
1791 "movq (%rsp),%rax\n\t"
1792 "movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
1793 "fxsave 0x100(%rcx)\n\t" /* context->FtlSave */
1794 "movdqa %xmm0,0x1a0(%rcx)\n\t" /* context->Xmm0 */
1795 "movdqa %xmm1,0x1b0(%rcx)\n\t" /* context->Xmm1 */
1796 "movdqa %xmm2,0x1c0(%rcx)\n\t" /* context->Xmm2 */
1797 "movdqa %xmm3,0x1d0(%rcx)\n\t" /* context->Xmm3 */
1798 "movdqa %xmm4,0x1e0(%rcx)\n\t" /* context->Xmm4 */
1799 "movdqa %xmm5,0x1f0(%rcx)\n\t" /* context->Xmm5 */
1800 "movdqa %xmm6,0x200(%rcx)\n\t" /* context->Xmm6 */
1801 "movdqa %xmm7,0x210(%rcx)\n\t" /* context->Xmm7 */
1802 "movdqa %xmm8,0x220(%rcx)\n\t" /* context->Xmm8 */
1803 "movdqa %xmm9,0x230(%rcx)\n\t" /* context->Xmm9 */
1804 "movdqa %xmm10,0x240(%rcx)\n\t" /* context->Xmm10 */
1805 "movdqa %xmm11,0x250(%rcx)\n\t" /* context->Xmm11 */
1806 "movdqa %xmm12,0x260(%rcx)\n\t" /* context->Xmm12 */
1807 "movdqa %xmm13,0x270(%rcx)\n\t" /* context->Xmm13 */
1808 "movdqa %xmm14,0x280(%rcx)\n\t" /* context->Xmm14 */
1809 "movdqa %xmm15,0x290(%rcx)\n\t" /* context->Xmm15 */
1810 "ret" );
1811
1812 /***********************************************************************
1813 * set_full_cpu_context
1814 *
1815 * Set the new CPU context.
1816 */
1817 extern void set_full_cpu_context( const CONTEXT *context );
1818 __ASM_GLOBAL_FUNC( set_full_cpu_context,
1819 "subq $40,%rsp\n\t"
1820 __ASM_SEH(".seh_stackalloc 0x40\n\t")
1821 __ASM_SEH(".seh_endprologue\n\t")
1822 __ASM_CFI(".cfi_adjust_cfa_offset 40\n\t")
1823 "ldmxcsr 0x34(%rdi)\n\t" /* context->MxCsr */
1824 "movw 0x38(%rdi),%ax\n\t" /* context->SegCs */
1825 "movq %rax,8(%rsp)\n\t"
1826 "movw 0x42(%rdi),%ax\n\t" /* context->SegSs */
1827 "movq %rax,32(%rsp)\n\t"
1828 "movq 0x44(%rdi),%rax\n\t" /* context->Eflags */
1829 "movq %rax,16(%rsp)\n\t"
1830 "movq 0x80(%rdi),%rcx\n\t" /* context->Rcx */
1831 "movq 0x88(%rdi),%rdx\n\t" /* context->Rdx */
1832 "movq 0x90(%rdi),%rbx\n\t" /* context->Rbx */
1833 "movq 0x98(%rdi),%rax\n\t" /* context->Rsp */
1834 "movq %rax,24(%rsp)\n\t"
1835 "movq 0xa0(%rdi),%rbp\n\t" /* context->Rbp */
1836 "movq 0xa8(%rdi),%rsi\n\t" /* context->Rsi */
1837 "movq 0xb8(%rdi),%r8\n\t" /* context->R8 */
1838 "movq 0xc0(%rdi),%r9\n\t" /* context->R9 */
1839 "movq 0xc8(%rdi),%r10\n\t" /* context->R10 */
1840 "movq 0xd0(%rdi),%r11\n\t" /* context->R11 */
1841 "movq 0xd8(%rdi),%r12\n\t" /* context->R12 */
1842 "movq 0xe0(%rdi),%r13\n\t" /* context->R13 */
1843 "movq 0xe8(%rdi),%r14\n\t" /* context->R14 */
1844 "movq 0xf0(%rdi),%r15\n\t" /* context->R15 */
1845 "movq 0xf8(%rdi),%rax\n\t" /* context->Rip */
1846 "movq %rax,(%rsp)\n\t"
1847 "fxrstor 0x100(%rdi)\n\t" /* context->FtlSave */
1848 "movdqa 0x1a0(%rdi),%xmm0\n\t" /* context->Xmm0 */
1849 "movdqa 0x1b0(%rdi),%xmm1\n\t" /* context->Xmm1 */
1850 "movdqa 0x1c0(%rdi),%xmm2\n\t" /* context->Xmm2 */
1851 "movdqa 0x1d0(%rdi),%xmm3\n\t" /* context->Xmm3 */
1852 "movdqa 0x1e0(%rdi),%xmm4\n\t" /* context->Xmm4 */
1853 "movdqa 0x1f0(%rdi),%xmm5\n\t" /* context->Xmm5 */
1854 "movdqa 0x200(%rdi),%xmm6\n\t" /* context->Xmm6 */
1855 "movdqa 0x210(%rdi),%xmm7\n\t" /* context->Xmm7 */
1856 "movdqa 0x220(%rdi),%xmm8\n\t" /* context->Xmm8 */
1857 "movdqa 0x230(%rdi),%xmm9\n\t" /* context->Xmm9 */
1858 "movdqa 0x240(%rdi),%xmm10\n\t" /* context->Xmm10 */
1859 "movdqa 0x250(%rdi),%xmm11\n\t" /* context->Xmm11 */
1860 "movdqa 0x260(%rdi),%xmm12\n\t" /* context->Xmm12 */
1861 "movdqa 0x270(%rdi),%xmm13\n\t" /* context->Xmm13 */
1862 "movdqa 0x280(%rdi),%xmm14\n\t" /* context->Xmm14 */
1863 "movdqa 0x290(%rdi),%xmm15\n\t" /* context->Xmm15 */
1864 "movq 0x78(%rdi),%rax\n\t" /* context->Rax */
1865 "movq 0xb0(%rdi),%rdi\n\t" /* context->Rdi */
1866 "iretq" );
1867
1868
1869 /***********************************************************************
1870 * set_cpu_context
1871 *
1872 * Set the new CPU context. Used by NtSetContextThread.
1873 */
1874 void DECLSPEC_HIDDEN set_cpu_context( const CONTEXT *context )
1875 {
1876 DWORD flags = context->ContextFlags & ~CONTEXT_AMD64;
1877
1878 if (flags & CONTEXT_DEBUG_REGISTERS)
1879 {
1880 amd64_thread_data()->dr0 = context->Dr0;
1881 amd64_thread_data()->dr1 = context->Dr1;
1882 amd64_thread_data()->dr2 = context->Dr2;
1883 amd64_thread_data()->dr3 = context->Dr3;
1884 amd64_thread_data()->dr6 = context->Dr6;
1885 amd64_thread_data()->dr7 = context->Dr7;
1886 }
1887 if (flags & CONTEXT_FULL)
1888 {
1889 if (!(flags & CONTEXT_CONTROL))
1890 FIXME( "setting partial context (%x) not supported\n", flags );
1891 else
1892 set_full_cpu_context( context );
1893 }
1894 }
1895
1896
1897 /***********************************************************************
1898 * get_server_context_flags
1899 *
1900 * Convert CPU-specific flags to generic server flags
1901 */
1902 static unsigned int get_server_context_flags( DWORD flags )
1903 {
1904 unsigned int ret = 0;
1905
1906 flags &= ~CONTEXT_AMD64; /* get rid of CPU id */
1907 if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
1908 if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
1909 if (flags & CONTEXT_SEGMENTS) ret |= SERVER_CTX_SEGMENTS;
1910 if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
1911 if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
1912 return ret;
1913 }
1914
1915
1916 /***********************************************************************
1917 * copy_context
1918 *
1919 * Copy a register context according to the flags.
1920 */
1921 static void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
1922 {
1923 flags &= ~CONTEXT_AMD64; /* get rid of CPU id */
1924 if (flags & CONTEXT_CONTROL)
1925 {
1926 to->Rbp = from->Rbp;
1927 to->Rip = from->Rip;
1928 to->Rsp = from->Rsp;
1929 to->SegCs = from->SegCs;
1930 to->SegSs = from->SegSs;
1931 to->EFlags = from->EFlags;
1932 }
1933 if (flags & CONTEXT_INTEGER)
1934 {
1935 to->Rax = from->Rax;
1936 to->Rcx = from->Rcx;
1937 to->Rdx = from->Rdx;
1938 to->Rbx = from->Rbx;
1939 to->Rsi = from->Rsi;
1940 to->Rdi = from->Rdi;
1941 to->R8 = from->R8;
1942 to->R9 = from->R9;
1943 to->R10 = from->R10;
1944 to->R11 = from->R11;
1945 to->R12 = from->R12;
1946 to->R13 = from->R13;
1947 to->R14 = from->R14;
1948 to->R15 = from->R15;
1949 }
1950 if (flags & CONTEXT_SEGMENTS)
1951 {
1952 to->SegDs = from->SegDs;
1953 to->SegEs = from->SegEs;
1954 to->SegFs = from->SegFs;
1955 to->SegGs = from->SegGs;
1956 }
1957 if (flags & CONTEXT_FLOATING_POINT)
1958 {
1959 to->MxCsr = from->MxCsr;
1960 to->u.FltSave = from->u.FltSave;
1961 }
1962 if (flags & CONTEXT_DEBUG_REGISTERS)
1963 {
1964 to->Dr0 = from->Dr0;
1965 to->Dr1 = from->Dr1;
1966 to->Dr2 = from->Dr2;
1967 to->Dr3 = from->Dr3;
1968 to->Dr6 = from->Dr6;
1969 to->Dr7 = from->Dr7;
1970 }
1971 }
1972
1973
1974 /***********************************************************************
1975 * context_to_server
1976 *
1977 * Convert a register context to the server format.
1978 */
1979 NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
1980 {
1981 DWORD flags = from->ContextFlags & ~CONTEXT_AMD64; /* get rid of CPU id */
1982
1983 memset( to, 0, sizeof(*to) );
1984 to->cpu = CPU_x86_64;
1985
1986 if (flags & CONTEXT_CONTROL)
1987 {
1988 to->flags |= SERVER_CTX_CONTROL;
1989 to->ctl.x86_64_regs.rbp = from->Rbp;
1990 to->ctl.x86_64_regs.rip = from->Rip;
1991 to->ctl.x86_64_regs.rsp = from->Rsp;
1992 to->ctl.x86_64_regs.cs = from->SegCs;
1993 to->ctl.x86_64_regs.ss = from->SegSs;
1994 to->ctl.x86_64_regs.flags = from->EFlags;
1995 }
1996 if (flags & CONTEXT_INTEGER)
1997 {
1998 to->flags |= SERVER_CTX_INTEGER;
1999 to->integer.x86_64_regs.rax = from->Rax;
2000 to->integer.x86_64_regs.rcx = from->Rcx;
2001 to->integer.x86_64_regs.rdx = from->Rdx;
2002 to->integer.x86_64_regs.rbx = from->Rbx;
2003 to->integer.x86_64_regs.rsi = from->Rsi;
2004 to->integer.x86_64_regs.rdi = from->Rdi;
2005 to->integer.x86_64_regs.r8 = from->R8;
2006 to->integer.x86_64_regs.r9 = from->R9;
2007 to->integer.x86_64_regs.r10 = from->R10;
2008 to->integer.x86_64_regs.r11 = from->R11;
2009 to->integer.x86_64_regs.r12 = from->R12;
2010 to->integer.x86_64_regs.r13 = from->R13;
2011 to->integer.x86_64_regs.r14 = from->R14;
2012 to->integer.x86_64_regs.r15 = from->R15;
2013 }
2014 if (flags & CONTEXT_SEGMENTS)
2015 {
2016 to->flags |= SERVER_CTX_SEGMENTS;
2017 to->seg.x86_64_regs.ds = from->SegDs;
2018 to->seg.x86_64_regs.es = from->SegEs;
2019 to->seg.x86_64_regs.fs = from->SegFs;
2020 to->seg.x86_64_regs.gs = from->SegGs;
2021 }
2022 if (flags & CONTEXT_FLOATING_POINT)
2023 {
2024 to->flags |= SERVER_CTX_FLOATING_POINT;
2025 memcpy( to->fp.x86_64_regs.fpregs, &from->u.FltSave, sizeof(to->fp.x86_64_regs.fpregs) );
2026 }
2027 if (flags & CONTEXT_DEBUG_REGISTERS)
2028 {
2029 to->flags |= SERVER_CTX_DEBUG_REGISTERS;
2030 to->debug.x86_64_regs.dr0 = from->Dr0;
2031 to->debug.x86_64_regs.dr1 = from->Dr1;
2032 to->debug.x86_64_regs.dr2 = from->Dr2;
2033 to->debug.x86_64_regs.dr3 = from->Dr3;
2034 to->debug.x86_64_regs.dr6 = from->Dr6;
2035 to->debug.x86_64_regs.dr7 = from->Dr7;
2036 }
2037 return STATUS_SUCCESS;
2038 }
2039
2040
2041 /***********************************************************************
2042 * context_from_server
2043 *
2044 * Convert a register context from the server format.
2045 */
2046 NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
2047 {
2048 if (from->cpu != CPU_x86_64) return STATUS_INVALID_PARAMETER;
2049
2050 to->ContextFlags = CONTEXT_AMD64;
2051 if (from->flags & SERVER_CTX_CONTROL)
2052 {
2053 to->ContextFlags |= CONTEXT_CONTROL;
2054 to->Rbp = from->ctl.x86_64_regs.rbp;
2055 to->Rip = from->ctl.x86_64_regs.rip;
2056 to->Rsp = from->ctl.x86_64_regs.rsp;
2057 to->SegCs = from->ctl.x86_64_regs.cs;
2058 to->SegSs = from->ctl.x86_64_regs.ss;
2059 to->EFlags = from->ctl.x86_64_regs.flags;
2060 }
2061
2062 if (from->flags & SERVER_CTX_INTEGER)
2063 {
2064 to->ContextFlags |= CONTEXT_INTEGER;
2065 to->Rax = from->integer.x86_64_regs.rax;
2066 to->Rcx = from->integer.x86_64_regs.rcx;
2067 to->Rdx = from->integer.x86_64_regs.rdx;
2068 to->Rbx = from->integer.x86_64_regs.rbx;
2069 to->Rsi = from->integer.x86_64_regs.rsi;
2070 to->Rdi = from->integer.x86_64_regs.rdi;
2071 to->R8 = from->integer.x86_64_regs.r8;
2072 to->R9 = from->integer.x86_64_regs.r9;
2073 to->R10 = from->integer.x86_64_regs.r10;
2074 to->R11 = from->integer.x86_64_regs.r11;
2075 to->R12 = from->integer.x86_64_regs.r12;
2076 to->R13 = from->integer.x86_64_regs.r13;
2077 to->R14 = from->integer.x86_64_regs.r14;
2078 to->R15 = from->integer.x86_64_regs.r15;
2079 }
2080 if (from->flags & SERVER_CTX_SEGMENTS)
2081 {
2082 to->ContextFlags |= CONTEXT_SEGMENTS;
2083 to->SegDs = from->seg.x86_64_regs.ds;
2084 to->SegEs = from->seg.x86_64_regs.es;
2085 to->SegFs = from->seg.x86_64_regs.fs;
2086 to->SegGs = from->seg.x86_64_regs.gs;
2087 }
2088 if (from->flags & SERVER_CTX_FLOATING_POINT)
2089 {
2090 to->ContextFlags |= CONTEXT_FLOATING_POINT;
2091 memcpy( &to->u.FltSave, from->fp.x86_64_regs.fpregs, sizeof(from->fp.x86_64_regs.fpregs) );
2092 to->MxCsr = to->u.FltSave.MxCsr;
2093 }
2094 if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
2095 {
2096 to->ContextFlags |= CONTEXT_DEBUG_REGISTERS;
2097 to->Dr0 = from->debug.x86_64_regs.dr0;
2098 to->Dr1 = from->debug.x86_64_regs.dr1;
2099 to->Dr2 = from->debug.x86_64_regs.dr2;
2100 to->Dr3 = from->debug.x86_64_regs.dr3;
2101 to->Dr6 = from->debug.x86_64_regs.dr6;
2102 to->Dr7 = from->debug.x86_64_regs.dr7;
2103 }
2104 return STATUS_SUCCESS;
2105 }
2106
2107
2108 /***********************************************************************
2109 * NtSetContextThread (NTDLL.@)
2110 * ZwSetContextThread (NTDLL.@)
2111 */
2112 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
2113 {
2114 NTSTATUS ret = STATUS_SUCCESS;
2115 BOOL self = (handle == GetCurrentThread());
2116
2117 /* debug registers require a server call */
2118 if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_AMD64)))
2119 self = (amd64_thread_data()->dr0 == context->Dr0 &&
2120 amd64_thread_data()->dr1 == context->Dr1 &&
2121 amd64_thread_data()->dr2 == context->Dr2 &&
2122 amd64_thread_data()->dr3 == context->Dr3 &&
2123 amd64_thread_data()->dr6 == context->Dr6 &&
2124 amd64_thread_data()->dr7 == context->Dr7);
2125
2126 if (!self)
2127 {
2128 context_t server_context;
2129 context_to_server( &server_context, context );
2130 ret = set_thread_context( handle, &server_context, &self );
2131 }
2132 if (self && ret == STATUS_SUCCESS) set_cpu_context( context );
2133 return ret;
2134 }
2135
2136
2137 /***********************************************************************
2138 * NtGetContextThread (NTDLL.@)
2139 * ZwGetContextThread (NTDLL.@)
2140 */
2141 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
2142 {
2143 NTSTATUS ret;
2144 DWORD needed_flags;
2145 BOOL self = (handle == GetCurrentThread());
2146
2147 if (!context) return STATUS_INVALID_PARAMETER;
2148
2149 needed_flags = context->ContextFlags;
2150
2151 /* debug registers require a server call */
2152 if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_AMD64)) self = FALSE;
2153
2154 if (!self)
2155 {
2156 context_t server_context;
2157 unsigned int server_flags = get_server_context_flags( context->ContextFlags );
2158
2159 if ((ret = get_thread_context( handle, &server_context, server_flags, &self ))) return ret;
2160 if ((ret = context_from_server( context, &server_context ))) return ret;
2161 needed_flags &= ~context->ContextFlags;
2162 }
2163
2164 if (self)
2165 {
2166 if (needed_flags)
2167 {
2168 CONTEXT ctx;
2169 RtlCaptureContext( &ctx );
2170 copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
2171 context->ContextFlags |= ctx.ContextFlags & needed_flags;
2172 }
2173 /* update the cached version of the debug registers */
2174 if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_AMD64))
2175 {
2176 amd64_thread_data()->dr0 = context->Dr0;
2177 amd64_thread_data()->dr1 = context->Dr1;
2178 amd64_thread_data()->dr2 = context->Dr2;
2179 amd64_thread_data()->dr3 = context->Dr3;
2180 amd64_thread_data()->dr6 = context->Dr6;
2181 amd64_thread_data()->dr7 = context->Dr7;
2182 }
2183 }
2184 return STATUS_SUCCESS;
2185 }
2186
2187
2188 /***********************************************************************
2189 * wow64_get_server_context_flags
2190 */
2191 static unsigned int wow64_get_server_context_flags( DWORD flags )
2192 {
2193 unsigned int ret = 0;
2194
2195 flags &= ~WOW64_CONTEXT_i386; /* get rid of CPU id */
2196 if (flags & WOW64_CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
2197 if (flags & WOW64_CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
2198 if (flags & WOW64_CONTEXT_SEGMENTS) ret |= SERVER_CTX_SEGMENTS;
2199 if (flags & WOW64_CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
2200 if (flags & WOW64_CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
2201 if (flags & WOW64_CONTEXT_EXTENDED_REGISTERS) ret |= SERVER_CTX_EXTENDED_REGISTERS;
2202 return ret;
2203 }
2204
2205 /***********************************************************************
2206 * wow64_context_from_server
2207 */
2208 static NTSTATUS wow64_context_from_server( WOW64_CONTEXT *to, const context_t *from )
2209 {
2210 if (from->cpu != CPU_x86) return STATUS_INVALID_PARAMETER;
2211
2212 to->ContextFlags = WOW64_CONTEXT_i386;
2213 if (from->flags & SERVER_CTX_CONTROL)
2214 {
2215 to->ContextFlags |= WOW64_CONTEXT_CONTROL;
2216 to->Ebp = from->ctl.i386_regs.ebp;
2217 to->Esp = from->ctl.i386_regs.esp;
2218 to->Eip = from->ctl.i386_regs.eip;
2219 to->SegCs = from->ctl.i386_regs.cs;
2220 to->SegSs = from->ctl.i386_regs.ss;
2221 to->EFlags = from->ctl.i386_regs.eflags;
2222 }
2223 if (from->flags & SERVER_CTX_INTEGER)
2224 {
2225 to->ContextFlags |= WOW64_CONTEXT_INTEGER;
2226 to->Eax = from->integer.i386_regs.eax;
2227 to->Ebx = from->integer.i386_regs.ebx;
2228 to->Ecx = from->integer.i386_regs.ecx;
2229 to->Edx = from->integer.i386_regs.edx;
2230 to->Esi = from->integer.i386_regs.esi;
2231 to->Edi = from->integer.i386_regs.edi;
2232 }
2233 if (from->flags & SERVER_CTX_SEGMENTS)
2234 {
2235 to->ContextFlags |= WOW64_CONTEXT_SEGMENTS;
2236 to->SegDs = from->seg.i386_regs.ds;
2237 to->SegEs = from->seg.i386_regs.es;
2238 to->SegFs = from->seg.i386_regs.fs;
2239 to->SegGs = from->seg.i386_regs.gs;
2240 }
2241 if (from->flags & SERVER_CTX_FLOATING_POINT)
2242 {
2243 to->ContextFlags |= WOW64_CONTEXT_FLOATING_POINT;
2244 to->FloatSave.ControlWord = from->fp.i386_regs.ctrl;
2245 to->FloatSave.StatusWord = from->fp.i386_regs.status;
2246 to->FloatSave.TagWord = from->fp.i386_regs.tag;
2247 to->FloatSave.ErrorOffset = from->fp.i386_regs.err_off;
2248 to->FloatSave.ErrorSelector = from->fp.i386_regs.err_sel;
2249 to->FloatSave.DataOffset = from->fp.i386_regs.data_off;
2250 to->FloatSave.DataSelector = from->fp.i386_regs.data_sel;
2251 to->FloatSave.Cr0NpxState = from->fp.i386_regs.cr0npx;
2252 memcpy( to->FloatSave.RegisterArea, from->fp.i386_regs.regs, sizeof(to->FloatSave.RegisterArea) );
2253 }
2254 if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
2255 {
2256 to->ContextFlags |= WOW64_CONTEXT_DEBUG_REGISTERS;
2257 to->Dr0 = from->debug.i386_regs.dr0;
2258 to->Dr1 = from->debug.i386_regs.dr1;
2259 to->Dr2 = from->debug.i386_regs.dr2;
2260 to->Dr3 = from->debug.i386_regs.dr3;
2261 to->Dr6 = from->debug.i386_regs.dr6;
2262 to->Dr7 = from->debug.i386_regs.dr7;
2263 }
2264 if (from->flags & SERVER_CTX_EXTENDED_REGISTERS)
2265 {
2266 to->ContextFlags |= WOW64_CONTEXT_EXTENDED_REGISTERS;
2267 memcpy( to->ExtendedRegisters, from->ext.i386_regs, sizeof(to->ExtendedRegisters) );
2268 }
2269 return STATUS_SUCCESS;
2270 }
2271
2272 /***********************************************************************
2273 * wow64_context_to_server
2274 */
2275 static void wow64_context_to_server( context_t *to, const WOW64_CONTEXT *from )
2276 {
2277 DWORD flags = from->ContextFlags & ~WOW64_CONTEXT_i386; /* get rid of CPU id */
2278
2279 memset( to, 0, sizeof(*to) );
2280 to->cpu = CPU_x86;
2281
2282 if (flags & WOW64_CONTEXT_CONTROL)
2283 {
2284 to->flags |= SERVER_CTX_CONTROL;
2285 to->ctl.i386_regs.ebp = from->Ebp;
2286 to->ctl.i386_regs.esp = from->Esp;
2287 to->ctl.i386_regs.eip = from->Eip;
2288 to->ctl.i386_regs.cs = from->SegCs;
2289 to->ctl.i386_regs.ss = from->SegSs;
2290 to->ctl.i386_regs.eflags = from->EFlags;
2291 }
2292 if (flags & WOW64_CONTEXT_INTEGER)
2293 {
2294 to->flags |= SERVER_CTX_INTEGER;
2295 to->integer.i386_regs.eax = from->Eax;
2296 to->integer.i386_regs.ebx = from->Ebx;
2297 to->integer.i386_regs.ecx = from->Ecx;
2298 to->integer.i386_regs.edx = from->Edx;
2299 to->integer.i386_regs.esi = from->Esi;
2300 to->integer.i386_regs.edi = from->Edi;
2301 }
2302 if (flags & WOW64_CONTEXT_SEGMENTS)
2303 {
2304 to->flags |= SERVER_CTX_SEGMENTS;
2305 to->seg.i386_regs.ds = from->SegDs;
2306 to->seg.i386_regs.es = from->SegEs;
2307 to->seg.i386_regs.fs = from->SegFs;
2308 to->seg.i386_regs.gs = from->SegGs;
2309 }
2310 if (flags & WOW64_CONTEXT_FLOATING_POINT)
2311 {
2312 to->flags |= SERVER_CTX_FLOATING_POINT;
2313 to->fp.i386_regs.ctrl = from->FloatSave.ControlWord;
2314 to->fp.i386_regs.status = from->FloatSave.StatusWord;
2315 to->fp.i386_regs.tag = from->FloatSave.TagWord;
2316 to->fp.i386_regs.err_off = from->FloatSave.ErrorOffset;
2317 to->fp.i386_regs.err_sel = from->FloatSave.ErrorSelector;
2318 to->fp.i386_regs.data_off = from->FloatSave.DataOffset;
2319 to->fp.i386_regs.data_sel = from->FloatSave.DataSelector;
2320 to->fp.i386_regs.cr0npx = from->FloatSave.Cr0NpxState;
2321 memcpy( to->fp.i386_regs.regs, from->FloatSave.RegisterArea, sizeof(to->fp.i386_regs.regs) );
2322 }
2323 if (flags & WOW64_CONTEXT_DEBUG_REGISTERS)
2324 {
2325 to->flags |= SERVER_CTX_DEBUG_REGISTERS;
2326 to->debug.i386_regs.dr0 = from->Dr0;
2327 to->debug.i386_regs.dr1 = from->Dr1;
2328 to->debug.i386_regs.dr2 = from->Dr2;
2329 to->debug.i386_regs.dr3 = from->Dr3;
2330 to->debug.i386_regs.dr6 = from->Dr6;
2331 to->debug.i386_regs.dr7 = from->Dr7;
2332 }
2333 if (flags & WOW64_CONTEXT_EXTENDED_REGISTERS)
2334 {
2335 to->flags |= SERVER_CTX_EXTENDED_REGISTERS;
2336 memcpy( to->ext.i386_regs, from->ExtendedRegisters, sizeof(to->ext.i386_regs) );
2337 }
2338 }
2339
2340
2341 /******************************************************************************
2342 * RtlWow64GetThreadContext (NTDLL.@)
2343 */
2344 NTSTATUS WINAPI RtlWow64GetThreadContext( HANDLE handle, WOW64_CONTEXT *context )
2345 {
2346 BOOL self;
2347 NTSTATUS ret;
2348 context_t server_context;
2349 unsigned int server_flags = wow64_get_server_context_flags( context->ContextFlags );
2350
2351 if ((ret = get_thread_context( handle, &server_context, server_flags, &self ))) return ret;
2352 if (self) return STATUS_INVALID_PARAMETER;
2353 return wow64_context_from_server( context, &server_context );
2354 }
2355
2356
2357 /******************************************************************************
2358 * RtlWow64SetThreadContext (NTDLL.@)
2359 */
2360 NTSTATUS WINAPI RtlWow64SetThreadContext( HANDLE handle, const WOW64_CONTEXT *context )
2361 {
2362 BOOL self;
2363 context_t server_context;
2364
2365 wow64_context_to_server( &server_context, context );
2366 return set_thread_context( handle, &server_context, &self );
2367 }
2368
2369
2370 static DWORD __cdecl nested_exception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
2371 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
2372 {
2373 if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)) return ExceptionContinueSearch;
2374
2375 /* FIXME */
2376 return ExceptionNestedException;
2377 }
2378
2379 /**********************************************************************
2380 * call_handler
2381 *
2382 * Call a single exception handler.
2383 * FIXME: Handle nested exceptions.
2384 */
2385 static DWORD call_handler( EXCEPTION_RECORD *rec, CONTEXT *context, DISPATCHER_CONTEXT *dispatch )
2386 {
2387 EXCEPTION_REGISTRATION_RECORD frame;
2388 DWORD res;
2389
2390 frame.Handler = nested_exception_handler;
2391 __wine_push_frame( &frame );
2392
2393 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2394 dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2395 res = dispatch->LanguageHandler( rec, (void *)dispatch->EstablisherFrame, context, dispatch );
2396 TRACE( "handler at %p returned %u\n", dispatch->LanguageHandler, res );
2397
2398 rec->ExceptionFlags &= EH_NONCONTINUABLE;
2399 __wine_pop_frame( &frame );
2400 return res;
2401 }
2402
2403
2404 /**********************************************************************
2405 * call_teb_handler
2406 *
2407 * Call a single exception handler from the TEB chain.
2408 * FIXME: Handle nested exceptions.
2409 */
2410 static DWORD call_teb_handler( EXCEPTION_RECORD *rec, CONTEXT *context, DISPATCHER_CONTEXT *dispatch,
2411 EXCEPTION_REGISTRATION_RECORD *teb_frame )
2412 {
2413 DWORD res;
2414
2415 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
2416 teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, dispatch );
2417 res = teb_frame->Handler( rec, teb_frame, context, (EXCEPTION_REGISTRATION_RECORD**)dispatch );
2418 TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
2419 return res;
2420 }
2421
2422
2423 /**********************************************************************
2424 * call_stack_handlers
2425 *
2426 * Call the stack handlers chain.
2427 */
2428 static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_context )
2429 {
2430 EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
2431 UNWIND_HISTORY_TABLE table;
2432 DISPATCHER_CONTEXT dispatch;
2433 CONTEXT context;
2434 NTSTATUS status;
2435
2436 context = *orig_context;
2437 dispatch.TargetIp = 0;
2438 dispatch.ContextRecord = &context;
2439 dispatch.HistoryTable = &table;
2440 for (;;)
2441 {
2442 status = virtual_unwind( UNW_FLAG_EHANDLER, &dispatch, &context );
2443 if (status != STATUS_SUCCESS) return status;
2444
2445 unwind_done:
2446 if (!dispatch.EstablisherFrame) break;
2447
2448 if ((dispatch.EstablisherFrame & 7) ||
2449 dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
2450 dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)
2451 {
2452 ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
2453 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
2454 rec->ExceptionFlags |= EH_STACK_INVALID;
2455 break;
2456 }
2457
2458 if (dispatch.LanguageHandler)
2459 {
2460 switch (call_handler( rec, orig_context, &dispatch ))
2461 {
2462 case ExceptionContinueExecution:
2463 if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
2464 return STATUS_SUCCESS;
2465 case ExceptionContinueSearch:
2466 break;
2467 case ExceptionNestedException:
2468 FIXME( "nested exception\n" );
2469 break;
2470 case ExceptionCollidedUnwind: {
2471 ULONG64 frame;
2472
2473 context = *dispatch.ContextRecord;
2474 dispatch.ContextRecord = &context;
2475 RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
2476 dispatch.ControlPc, dispatch.FunctionEntry,
2477 &context, NULL, &frame, NULL );
2478 goto unwind_done;
2479 }
2480 default:
2481 return STATUS_INVALID_DISPOSITION;
2482 }
2483 }
2484 /* hack: call wine handlers registered in the tib list */
2485 else while ((ULONG64)teb_frame < context.Rsp)
2486 {
2487 TRACE( "found wine frame %p rsp %lx handler %p\n",
2488 teb_frame, context.Rsp, teb_frame->Handler );
2489 dispatch.EstablisherFrame = (ULONG64)teb_frame;
2490 switch (call_teb_handler( rec, orig_context, &dispatch, teb_frame ))
2491 {
2492 case ExceptionContinueExecution:
2493 if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
2494 return STATUS_SUCCESS;
2495 case ExceptionContinueSearch:
2496 break;
2497 case ExceptionNestedException:
2498 FIXME( "nested exception\n" );
2499 break;
2500 case ExceptionCollidedUnwind: {
2501 ULONG64 frame;
2502
2503 context = *dispatch.ContextRecord;
2504 dispatch.ContextRecord = &context;
2505 RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
2506 dispatch.ControlPc, dispatch.FunctionEntry,
2507 &context, NULL, &frame, NULL );
2508 teb_frame = teb_frame->Prev;
2509 goto unwind_done;
2510 }
2511 default:
2512 return STATUS_INVALID_DISPOSITION;
2513 }
2514 teb_frame = teb_frame->Prev;
2515 }
2516
2517 if (context.Rsp == (ULONG64)NtCurrentTeb()->Tib.StackBase) break;
2518 }
2519 return STATUS_UNHANDLED_EXCEPTION;
2520 }
2521
2522
2523 static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
2524 {
2525 NTSTATUS status;
2526
2527 if (first_chance)
2528 {
2529 DWORD c;
2530
2531 TRACE( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
2532 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
2533 context->Rip, GetCurrentThreadId() );
2534 for (c = 0; c < min( EXCEPTION_MAXIMUM_PARAMETERS, rec->NumberParameters ); c++)
2535 TRACE( " info[%d]=%016lx\n", c, rec->ExceptionInformation[c] );
2536 if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
2537 {
2538 if (rec->ExceptionInformation[1] >> 16)
2539 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
2540 rec->ExceptionAddress,
2541 (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
2542 else
2543 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
2544 rec->ExceptionAddress,
2545 (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
2546 }
2547 else
2548 {
2549 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
2550 context->Rax, context->Rbx, context->Rcx, context->Rdx );
2551 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
2552 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
2553 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
2554 context->R8, context->R9, context->R10, context->R11 );
2555 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
2556 context->R12, context->R13, context->R14, context->R15 );
2557 }
2558
2559 /* fix up instruction pointer in context for EXCEPTION_BREAKPOINT */
2560 if (rec->ExceptionCode == EXCEPTION_BREAKPOINT) context->Rip--;
2561
2562 if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION) goto done;
2563
2564 if ((status = call_stack_handlers( rec, context )) == STATUS_SUCCESS) goto done;
2565 if (status != STATUS_UNHANDLED_EXCEPTION) return status;
2566 }
2567
2568 /* last chance exception */
2569
2570 status = send_debug_event( rec, FALSE, context );
2571 if (status != DBG_CONTINUE)
2572 {
2573 if (rec->ExceptionFlags & EH_STACK_INVALID)
2574 ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
2575 else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
2576 ERR("Process attempted to continue execution after noncontinuable exception.\n");
2577 else
2578 ERR("Unhandled exception code %x flags %x addr %p\n",
2579 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
2580 NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
2581 }
2582
2583 done:
2584 return NtSetContextThread( GetCurrentThread(), context );
2585 }
2586
2587
2588 /*******************************************************************
2589 * NtRaiseException (NTDLL.@)
2590 */
2591 NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
2592 {
2593 NTSTATUS status;
2594
2595 if (first_chance)
2596 {
2597 status = send_debug_event( rec, TRUE, context );
2598 if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
2599 return NtSetContextThread( GetCurrentThread(), context );
2600 }
2601
2602 return raise_exception( rec, context, first_chance);
2603 }
2604
2605
2606 /**********************************************************************
2607 * raise_generic_exception
2608 *
2609 * Generic raise function for exceptions that don't need special treatment.
2610 */
2611 static void raise_generic_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
2612 {
2613 NTSTATUS status = raise_exception( rec, context, TRUE );
2614 raise_status( status, rec );
2615 }
2616
2617
2618 extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
2619 __ASM_GLOBAL_FUNC( raise_func_trampoline,
2620 __ASM_CFI(".cfi_signal_frame\n\t")
2621 __ASM_CFI(".cfi_def_cfa %rbp,160\n\t") /* red zone + rip + rbp + rdi + rsi */
2622 __ASM_CFI(".cfi_rel_offset %rip,24\n\t")
2623 __ASM_CFI(".cfi_rel_offset %rbp,16\n\t")
2624 __ASM_CFI(".cfi_rel_offset %rdi,8\n\t")
2625 __ASM_CFI(".cfi_rel_offset %rsi,0\n\t")
2626 "call *%rdx\n\t"
2627 "int $3")
2628
2629 /***********************************************************************
2630 * setup_exception
2631 *
2632 * Setup a proper stack frame for the raise function, and modify the
2633 * sigcontext so that the return from the signal handler will call
2634 * the raise function.
2635 */
2636 static struct stack_layout *setup_exception( ucontext_t *sigcontext )
2637 {
2638 struct stack_layout *stack;
2639 DWORD exception_code = 0;
2640
2641 stack = (struct stack_layout *)(RSP_sig(sigcontext) & ~15);
2642
2643 /* stack sanity checks */
2644
2645 if (is_inside_signal_stack( stack ))
2646 {
2647 ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
2648 GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
2649 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
2650 abort_thread(1);
2651 }
2652
2653 if (stack - 1 > stack || /* check for overflow in subtraction */
2654 (char *)stack <= (char *)NtCurrentTeb()->DeallocationStack ||
2655 (char *)stack > (char *)NtCurrentTeb()->Tib.StackBase)
2656 {
2657 WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
2658 GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
2659 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
2660 }
2661 else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->DeallocationStack + 4096)
2662 {
2663 /* stack overflow on last page, unrecoverable */
2664 UINT diff = (char *)NtCurrentTeb()->DeallocationStack + 4096 - (char *)(stack - 1);
2665 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
2666 diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
2667 (ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
2668 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
2669 abort_thread(1);
2670 }
2671 else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->Tib.StackLimit)
2672 {
2673 /* stack access below stack limit, may be recoverable */
2674 switch (virtual_handle_stack_fault( stack - 1 ))
2675 {
2676 case 0: /* not handled */
2677 {
2678 UINT diff = (char *)NtCurrentTeb()->Tib.StackLimit - (char *)(stack - 1);
2679 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
2680 diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
2681 (ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
2682 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
2683 abort_thread(1);
2684 }
2685 case -1: /* overflow */
2686 exception_code = EXCEPTION_STACK_OVERFLOW;
2687 break;
2688 }
2689 }
2690
2691 stack--; /* push the stack_layout structure */
2692 #if defined(VALGRIND_MAKE_MEM_UNDEFINED)
2693 VALGRIND_MAKE_MEM_UNDEFINED(stack, sizeof(*stack));
2694 #elif defined(VALGRIND_MAKE_WRITABLE)
2695 VALGRIND_MAKE_WRITABLE(stack, sizeof(*stack));
2696 #endif
2697 stack->rec.ExceptionRecord = NULL;
2698 stack->rec.ExceptionCode = exception_code;
2699 stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
2700 stack->rec.ExceptionAddress = (void *)RIP_sig(sigcontext);
2701 stack->rec.NumberParameters = 0;
2702 save_context( &stack->context, sigcontext );
2703
2704 return stack;
2705 }
2706
2707 static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout *stack )
2708 {
2709 ULONG64 *rsp_ptr;
2710 NTSTATUS status;
2711
2712 if (stack->rec.ExceptionCode == EXCEPTION_SINGLE_STEP)
2713 {
2714 /* when single stepping can't tell whether this is a hw bp or a
2715 * single step interrupt. try to avoid as much overhead as possible
2716 * and only do a server call if there is any hw bp enabled. */
2717
2718 if (!(stack->context.EFlags & 0x100) || (stack->context.Dr7 & 0xff))
2719 {
2720 /* (possible) hardware breakpoint, fetch the debug registers */
2721 DWORD saved_flags = stack->context.ContextFlags;
2722 stack->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
2723 NtGetContextThread(GetCurrentThread(), &stack->context);
2724 stack->context.ContextFlags |= saved_flags; /* restore flags */
2725 }
2726
2727 stack->context.EFlags &= ~0x100; /* clear single-step flag */
2728 }
2729
2730 status = send_debug_event( &stack->rec, TRUE, &stack->context );
2731 if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
2732 {
2733 restore_context( &stack->context, sigcontext );
2734 return;
2735 }
2736
2737 /* store return address and %rbp without aligning, so that the offset is fixed */
2738 rsp_ptr = (ULONG64 *)RSP_sig(sigcontext) - 16;
2739 *(--rsp_ptr) = stack->context.Rip;
2740 *(--rsp_ptr) = stack->context.Rbp;
2741 *(--rsp_ptr) = stack->context.Rdi;
2742 *(--rsp_ptr) = stack->context.Rsi;
2743
2744 /* now modify the sigcontext to return to the raise function */
2745 RIP_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline;
2746 RDI_sig(sigcontext) = (ULONG_PTR)&stack->rec;
2747 RSI_sig(sigcontext) = (ULONG_PTR)&stack->context;
2748 RDX_sig(sigcontext) = (ULONG_PTR)raise_generic_exception;
2749 RBP_sig(sigcontext) = (ULONG_PTR)rsp_ptr;
2750 RSP_sig(sigcontext) = (ULONG_PTR)stack;
2751 /* clear single-step, direction, and align check flag */
2752 EFL_sig(sigcontext) &= ~(0x100|0x400|0x40000);
2753 }
2754
2755
2756 /***********************************************************************
2757 * is_privileged_instr
2758 *
2759 * Check if the fault location is a privileged instruction.
2760 */
2761 static inline DWORD is_privileged_instr( CONTEXT *context )
2762 {
2763 BYTE instr[16];
2764 unsigned int i, prefix_count = 0;
2765 unsigned int len = virtual_uninterrupted_read_memory( (BYTE *)context->Rip, instr, sizeof(instr) );
2766
2767 for (i = 0; i < len; i++) switch (instr[i])
2768 {
2769 /* instruction prefixes */
2770 case 0x2e: /* %cs: */
2771 case 0x36: /* %ss: */
2772 case 0x3e: /* %ds: */
2773 case 0x26: /* %es: */
2774 case 0x40: /* rex */
2775 case 0x41: /* rex */
2776 case 0x42: /* rex */
2777 case 0x43: /* rex */
2778 case 0x44: /* rex */
2779 case 0x45: /* rex */
2780 case 0x46: /* rex */
2781 case 0x47: /* rex */
2782 case 0x48: /* rex */
2783 case 0x49: /* rex */
2784 case 0x4a: /* rex */
2785 case 0x4b: /* rex */
2786 case 0x4c: /* rex */
2787 case 0x4d: /* rex */
2788 case 0x4e: /* rex */
2789 case 0x4f: /* rex */
2790 case 0x64: /* %fs: */
2791 case 0x65: /* %gs: */
2792 case 0x66: /* opcode size */
2793 case 0x67: /* addr size */
2794 case 0xf0: /* lock */
2795 case 0xf2: /* repne */
2796 case 0xf3: /* repe */
2797 if (++prefix_count >= 15) return EXCEPTION_ILLEGAL_INSTRUCTION;
2798 continue;
2799
2800 case 0x0f: /* extended instruction */
2801 if (i == len - 1) return 0;
2802 switch (instr[i + 1])
2803 {
2804 case 0x06: /* clts */
2805 case 0x08: /* invd */
2806 case 0x09: /* wbinvd */
2807 case 0x20: /* mov crX, reg */
2808 case 0x21: /* mov drX, reg */
2809 case 0x22: /* mov reg, crX */
2810 case 0x23: /* mov reg drX */
2811 return EXCEPTION_PRIV_INSTRUCTION;
2812 }
2813 return 0;
2814 case 0x6c: /* insb (%dx) */
2815 case 0x6d: /* insl (%dx) */
2816 case 0x6e: /* outsb (%dx) */
2817 case 0x6f: /* outsl (%dx) */
2818 case 0xcd: /* int $xx */
2819 case 0xe4: /* inb al,XX */
2820 case 0xe5: /* in (e)ax,XX */
2821 case 0xe6: /* outb XX,al */
2822 case 0xe7: /* out XX,(e)ax */
2823 case 0xec: /* inb (%dx),%al */
2824 case 0xed: /* inl (%dx),%eax */
2825 case 0xee: /* outb %al,(%dx) */
2826 case 0xef: /* outl %eax,(%dx) */
2827 case 0xf4: /* hlt */
2828 case 0xfa: /* cli */
2829 case 0xfb: /* sti */
2830 return EXCEPTION_PRIV_INSTRUCTION;
2831 default:
2832 return 0;
2833 }
2834 return 0;
2835 }
2836
2837
2838 /***********************************************************************
2839 * handle_interrupt
2840 *
2841 * Handle an interrupt.
2842 */
2843 static inline BOOL handle_interrupt( ucontext_t *sigcontext, struct stack_layout *stack )
2844 {
2845 switch (ERROR_sig(sigcontext) >> 3)
2846 {
2847 case 0x2c:
2848 stack->rec.ExceptionCode = STATUS_ASSERTION_FAILURE;
2849 break;
2850 case 0x2d:
2851 switch (stack->context.Rax)
2852 {
2853 case 1: /* BREAKPOINT_PRINT */
2854 case 3: /* BREAKPOINT_LOAD_SYMBOLS */
2855 case 4: /* BREAKPOINT_UNLOAD_SYMBOLS */
2856 case 5: /* BREAKPOINT_COMMAND_STRING (>= Win2003) */
2857 RIP_sig(sigcontext) += 3;
2858 return TRUE;
2859 }
2860 stack->context.Rip += 3;
2861 stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
2862 stack->rec.ExceptionAddress = (void *)stack->context.Rip;
2863 stack->rec.NumberParameters = 1;
2864 stack->rec.ExceptionInformation[0] = stack->context.Rax;
2865 break;
2866 default:
2867 return FALSE;
2868 }
2869 setup_raise_exception( sigcontext, stack );
2870 return TRUE;
2871 }
2872
2873
2874 /**********************************************************************
2875 * segv_handler
2876 *
2877 * Handler for SIGSEGV and related errors.
2878 */
2879 static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2880 {
2881 struct stack_layout *stack;
2882 ucontext_t *ucontext = sigcontext;
2883
2884 stack = (struct stack_layout *)(RSP_sig(ucontext) & ~15);
2885
2886 /* check for exceptions on the signal stack caused by write watches */
2887 if (TRAP_sig(ucontext) == TRAP_x86_PAGEFLT && is_inside_signal_stack( stack ) &&
2888 !virtual_handle_fault( siginfo->si_addr, (ERROR_sig(ucontext) >> 1) & 0x09, TRUE ))
2889 {
2890 return;
2891 }
2892
2893 /* check for page fault inside the thread stack */
2894 if (TRAP_sig(ucontext) == TRAP_x86_PAGEFLT)
2895 {
2896 switch (virtual_handle_stack_fault( siginfo->si_addr ))
2897 {
2898 case 1: /* handled */
2899 return;
2900 case -1: /* overflow */
2901 stack = setup_exception( sigcontext );
2902 stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
2903 goto done;
2904 }
2905 }
2906
2907 stack = setup_exception( sigcontext );
2908 if (stack->rec.ExceptionCode == EXCEPTION_STACK_OVERFLOW) goto done;
2909
2910 switch(TRAP_sig(ucontext))
2911 {
2912 case TRAP_x86_OFLOW: /* Overflow exception */
2913 stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
2914 break;
2915 case TRAP_x86_BOUND: /* Bound range exception */
2916 stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
2917 break;
2918 case TRAP_x86_PRIVINFLT: /* Invalid opcode exception */
2919 stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
2920 break;
2921 case TRAP_x86_STKFLT: /* Stack fault */
2922 stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
2923 break;
2924 case TRAP_x86_SEGNPFLT: /* Segment not present exception */
2925 case TRAP_x86_PROTFLT: /* General protection fault */
2926 case TRAP_x86_UNKNOWN: /* Unknown fault code */
2927 {
2928 WORD err = ERROR_sig(ucontext);
2929 if (!err && (stack->rec.ExceptionCode = is_privileged_instr( &stack->context ))) break;
2930 if ((err & 7) == 2 && handle_interrupt( ucontext, stack )) return;
2931 stack->rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
2932 stack->rec.NumberParameters = 2;
2933 stack->rec.ExceptionInformation[0] = 0;
2934 stack->rec.ExceptionInformation[1] = 0xffffffffffffffff;
2935 }
2936 break;
2937 case TRAP_x86_PAGEFLT: /* Page fault */
2938 stack->rec.NumberParameters = 2;
2939 stack->rec.ExceptionInformation[0] = (ERROR_sig(ucontext) >> 1) & 0x09;
2940 stack->rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
2941 if (!(stack->rec.ExceptionCode = virtual_handle_fault((void *)stack->rec.ExceptionInformation[1],
2942 stack->rec.ExceptionInformation[0], FALSE )))
2943 return;
2944 break;
2945 case TRAP_x86_ALIGNFLT: /* Alignment check exception */
2946 stack->rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
2947 break;
2948 default:
2949 ERR( "Got unexpected trap %ld\n", (ULONG_PTR)TRAP_sig(ucontext) );
2950 /* fall through */
2951 case TRAP_x86_NMI: /* NMI interrupt */
2952 case TRAP_x86_DNA: /* Device not available exception */
2953 case TRAP_x86_DOUBLEFLT: /* Double fault exception */
2954 case TRAP_x86_TSSFLT: /* Invalid TSS exception */
2955 case TRAP_x86_MCHK: /* Machine check exception */
2956 case TRAP_x86_CACHEFLT: /* Cache flush exception */
2957 stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
2958 break;
2959 }
2960 done:
2961 setup_raise_exception( sigcontext, stack );
2962 }
2963
2964 /**********************************************************************
2965 * trap_handler
2966 *
2967 * Handler for SIGTRAP.
2968 */
2969 static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2970 {
2971 struct stack_layout *stack = setup_exception( sigcontext );
2972
2973 switch (siginfo->si_code)
2974 {
2975 case TRAP_TRACE: /* Single-step exception */
2976 case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
2977 stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
2978 break;
2979 case TRAP_BRKPT: /* Breakpoint exception */
2980 #ifdef SI_KERNEL
2981 case SI_KERNEL:
2982 #endif
2983 /* Check if this is actually icebp instruction */
2984 if (((unsigned char *)stack->rec.ExceptionAddress)[-1] == 0xF1)
2985 {
2986 stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
2987 break;
2988 }
2989 stack->rec.ExceptionAddress = (char *)stack->rec.ExceptionAddress - 1; /* back up over the int3 instruction */
2990 /* fall through */
2991 default:
2992 stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
2993 stack->rec.NumberParameters = 1;
2994 stack->rec.ExceptionInformation[0] = 0;
2995 break;
2996 }
2997
2998 setup_raise_exception( sigcontext, stack );
2999 }
3000
3001 /**********************************************************************
3002 * fpe_handler
3003 *
3004 * Handler for SIGFPE.
3005 */
3006 static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
3007 {
3008 struct stack_layout *stack = setup_exception( sigcontext );
3009
3010 switch (siginfo->si_code)
3011 {
3012 case FPE_FLTSUB:
3013 stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
3014 break;
3015 case FPE_INTDIV:
3016 stack->rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
3017 break;
3018 case FPE_INTOVF:
3019 stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
3020 break;
3021 case FPE_FLTDIV:
3022 stack->rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
3023 break;
3024 case FPE_FLTOVF:
3025 stack->rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
3026 break;
3027 case FPE_FLTUND:
3028 stack->rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
3029 break;
3030 case FPE_FLTRES:
3031 stack->rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
3032 break;
3033 case FPE_FLTINV:
3034 default:
3035 stack->rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
3036 break;
3037 }
3038
3039 setup_raise_exception( sigcontext, stack );
3040 }
3041
3042 /**********************************************************************
3043 * int_handler
3044 *
3045 * Handler for SIGINT.
3046 */
3047 static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
3048 {
3049 if (!dispatch_signal(SIGINT))
3050 {
3051 struct stack_layout *stack = setup_exception( sigcontext );
3052 stack->rec.ExceptionCode = CONTROL_C_EXIT;
3053 setup_raise_exception( sigcontext, stack );
3054 }
3055 }
3056
3057
3058 /**********************************************************************
3059 * abrt_handler
3060 *
3061 * Handler for SIGABRT.
3062 */
3063 static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
3064 {
3065 struct stack_layout *stack = setup_exception( sigcontext );
3066 stack->rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
3067 stack->rec.ExceptionFlags = EH_NONCONTINUABLE;
3068 setup_raise_exception( sigcontext, stack );
3069 }
3070
3071
3072 /**********************************************************************
3073 * quit_handler
3074 *
3075 * Handler for SIGQUIT.
3076 */
3077 static void quit_handler( int signal, siginfo_t *siginfo, void *ucontext )
3078 {
3079 abort_thread(0);
3080 }
3081
3082
3083 /**********************************************************************
3084 * usr1_handler
3085 *
3086 * Handler for SIGUSR1, used to signal a thread that it got suspended.
3087 */
3088 static void usr1_handler( int signal, siginfo_t *siginfo, void *ucontext )
3089 {
3090 CONTEXT context;
3091
3092 save_context( &context, ucontext );
3093 wait_suspend( &context );
3094 restore_context( &context, ucontext );
3095 }
3096
3097
3098 /***********************************************************************
3099 * __wine_set_signal_handler (NTDLL.@)
3100 */
3101 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
3102 {
3103 if (sig >= ARRAY_SIZE(handlers)) return -1;
3104 if (handlers[sig] != NULL) return -2;
3105 handlers[sig] = wsh;
3106 return 0;
3107 }
3108
3109
3110 /**********************************************************************
3111 * signal_alloc_thread
3112 */
3113 NTSTATUS signal_alloc_thread( TEB **teb )
3114 {
3115 static size_t sigstack_alignment;
3116 SIZE_T size;
3117 NTSTATUS status;
3118
3119 if (!sigstack_alignment)
3120 {
3121 size_t min_size = teb_size + max( MINSIGSTKSZ, 8192 );
3122 /* find the first power of two not smaller than min_size */
3123 sigstack_alignment = 12;
3124 while ((1u << sigstack_alignment) < min_size) sigstack_alignment++;
3125 signal_stack_size = (1 << sigstack_alignment) - teb_size;
3126 assert( sizeof(TEB) <= teb_size );
3127 }
3128
3129 size = 1 << sigstack_alignment;
3130 *teb = NULL;
3131 if (!(status = virtual_alloc_aligned( (void **)teb, 0, &size, MEM_COMMIT | MEM_TOP_DOWN,
3132 PAGE_READWRITE, sigstack_alignment )))
3133 {
3134 (*teb)->Tib.Self = &(*teb)->Tib;
3135 (*teb)->Tib.ExceptionList = (void *)~0UL;
3136 }
3137 return status;
3138 }
3139
3140
3141 /**********************************************************************
3142 * signal_free_thread
3143 */
3144 void signal_free_thread( TEB *teb )
3145 {
3146 SIZE_T size = 0;
3147
3148 NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
3149 }
3150
3151 #ifdef __APPLE__
3152 /**********************************************************************
3153 * mac_thread_gsbase
3154 */
3155 static void *mac_thread_gsbase(void)
3156 {
3157 struct thread_identifier_info tiinfo;
3158 unsigned int info_count = THREAD_IDENTIFIER_INFO_COUNT;
3159 static int gsbase_offset = -1;
3160 void *ret;
3161
3162 kern_return_t kr = thread_info(mach_thread_self(), THREAD_IDENTIFIER_INFO, (thread_info_t) &tiinfo, &info_count);
3163 if (kr == KERN_SUCCESS)
3164 {
3165 TRACE("pthread_self() %p thread ID %llx gsbase %llx\n", pthread_self(), tiinfo.thread_id, tiinfo.thread_handle);
3166 return (void*)tiinfo.thread_handle;
3167 }
3168
3169 if (gsbase_offset < 0)
3170 {
3171 /* Search for the array of TLS slots within the pthread data structure.
3172 That's what the macOS pthread implementation uses for gsbase. */
3173 const void* const sentinel1 = (const void*)0x2bffb6b4f11228ae;
3174 const void* const sentinel2 = (const void*)0x0845a7ff6ab76707;
3175 int rc;
3176 pthread_key_t key;
3177 const void** p = (const void**)pthread_self();
3178 int i;
3179
3180 gsbase_offset = 0;
3181 if ((rc = pthread_key_create(&key, NULL)))
3182 {
3183 ERR("failed to create sentinel key for gsbase search: %d\n", rc);
3184 return NULL;
3185 }
3186
3187 pthread_setspecific(key, sentinel1);
3188
3189 for (i = key + 1; i < 2000; i++) /* arbitrary limit */
3190 {
3191 if (p[i] == sentinel1)
3192 {
3193 pthread_setspecific(key, sentinel2);
3194
3195 if (p[i] == sentinel2)
3196 {
3197 gsbase_offset = (i - key) * sizeof(*p);
3198 break;
3199 }
3200
3201 pthread_setspecific(key, sentinel1);
3202 }
3203 }
3204
3205 pthread_key_delete(key);
3206 }
3207
3208 if (gsbase_offset)
3209 {
3210 ret = (char*)pthread_self() + gsbase_offset;
3211 TRACE("pthread_self() %p + offset 0x%08x -> gsbase %p\n", pthread_self(), gsbase_offset, ret);
3212 }
3213 else
3214 {
3215 ret = NULL;
3216 ERR("failed to locate gsbase; won't be able to poke ThreadLocalStoragePointer into pthread TLS; expect crashes\n");
3217 }
3218
3219 return ret;
3220 }
3221 #endif
3222
3223
3224 /**********************************************************************
3225 * signal_init_thread
3226 */
3227 void signal_init_thread( TEB *teb )
3228 {
3229 const WORD fpu_cw = 0x27f;
3230 stack_t ss;
3231
3232 #if defined __linux__
3233 arch_prctl( ARCH_SET_GS, teb );
3234 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
3235 amd64_set_gsbase( teb );
3236 #elif defined(__NetBSD__)
3237 sysarch( X86_64_SET_GSBASE, &teb );
3238 #elif defined (__APPLE__)
3239 __asm__ volatile (".byte 0x65\n\tmovq %0,%c1"
3240 :
3241 : "r" (teb->Tib.Self), "n" (FIELD_OFFSET(TEB, Tib.Self)));
3242 __asm__ volatile (".byte 0x65\n\tmovq %0,%c1"
3243 :
3244 : "r" (teb->ThreadLocalStoragePointer), "n" (FIELD_OFFSET(TEB, ThreadLocalStoragePointer)));
3245
3246 /* alloc_tls_slot() needs to poke a value to an address relative to each
3247 thread's gsbase. Have each thread record its gsbase pointer into its
3248 TEB so alloc_tls_slot() can find it. */
3249 teb->Reserved5[0] = mac_thread_gsbase();
3250 #else
3251 # error Please define setting %gs for your architecture
3252 #endif
3253
3254 ss.ss_sp = (char *)teb + teb_size;
3255 ss.ss_size = signal_stack_size;
3256 ss.ss_flags = 0;
3257 if (sigaltstack(&ss, NULL) == -1) perror( "sigaltstack" );
3258
3259 #ifdef __GNUC__
3260 __asm__ volatile ("fninit; fldcw %0" : : "m" (fpu_cw));
3261 #else
3262 FIXME("FPU setup not implemented for this platform.\n");
3263 #endif
3264 }
3265
3266 /**********************************************************************
3267 * signal_init_process
3268 */
3269 void signal_init_process(void)
3270 {
3271 struct sigaction sig_act;
3272
3273 sig_act.sa_mask = server_block_set;
3274 sig_act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
3275
3276 sig_act.sa_sigaction = int_handler;
3277 if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
3278 sig_act.sa_sigaction = fpe_handler;
3279 if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
3280 sig_act.sa_sigaction = abrt_handler;
3281 if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
3282 sig_act.sa_sigaction = quit_handler;
3283 if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
3284 sig_act.sa_sigaction = usr1_handler;
3285 if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
3286
3287 sig_act.sa_sigaction = segv_handler;
3288 if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
3289 if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
3290 #ifdef SIGBUS
3291 if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
3292 #endif
3293
3294 #ifdef SIGTRAP
3295 sig_act.sa_sigaction = trap_handler;
3296 if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
3297 #endif
3298 return;
3299
3300 error:
3301 perror("sigaction");
3302 exit(1);
3303 }
3304
3305
3306 static ULONG64 get_int_reg( CONTEXT *context, int reg )
3307 {
3308 return *(&context->Rax + reg);
3309 }
3310
3311 static void set_int_reg( CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr, int reg, ULONG64 *val )
3312 {
3313 *(&context->Rax + reg) = *val;
3314 if (ctx_ptr) ctx_ptr->u2.IntegerContext[reg] = val;
3315 }
3316
3317 static void set_float_reg( CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr, int reg, M128A *val )
3318 {
3319 *(&context->u.s.Xmm0 + reg) = *val;
3320 if (ctx_ptr) ctx_ptr->u.FloatingContext[reg] = val;
3321 }
3322
3323 static int get_opcode_size( struct opcode op )
3324 {
3325 switch (op.code)
3326 {
3327 case UWOP_ALLOC_LARGE:
3328 return 2 + (op.info != 0);
3329 case UWOP_SAVE_NONVOL:
3330 case UWOP_SAVE_XMM128:
3331 case UWOP_EPILOG:
3332 return 2;
3333 case UWOP_SAVE_NONVOL_FAR:
3334 case UWOP_SAVE_XMM128_FAR:
3335 return 3;
3336 default:
3337 return 1;
3338 }
3339 }
3340
3341 static BOOL is_inside_epilog( BYTE *pc, ULONG64 base, const RUNTIME_FUNCTION *function )
3342 {
3343 /* add or lea must be the first instruction, and it must have a rex.W prefix */
3344 if ((pc[0] & 0xf8) == 0x48)
3345 {
3346 switch (pc[1])
3347 {
3348 case 0x81: /* add $nnnn,%rsp */
3349 if (pc[0] == 0x48 && pc[2] == 0xc4)
3350 {
3351 pc += 7;
3352 break;
3353 }
3354 return FALSE;
3355 case 0x83: /* add $n,%rsp */
3356 if (pc[0] == 0x48 && pc[2] == 0xc4)
3357 {
3358 pc += 4;
3359 break;
3360 }
3361 return FALSE;
3362 case 0x8d: /* lea n(reg),%rsp */
3363 if (pc[0] & 0x06) return FALSE; /* rex.RX must be cleared */
3364 if (((pc[2] >> 3) & 7) != 4) return FALSE; /* dest reg mus be %rsp */
3365 if ((pc[2] & 7) == 4) return FALSE; /* no SIB byte allowed */
3366 if ((pc[2] >> 6) == 1) /* 8-bit offset */
3367 {
3368 pc += 4;
3369 break;
3370 }
3371 if ((pc[2] >> 6) == 2) /* 32-bit offset */
3372 {
3373 pc += 7;
3374 break;
3375 }
3376 return FALSE;
3377 }
3378 }
3379
3380 /* now check for various pop instructions */
3381
3382 for (;;)
3383 {
3384 if ((*pc & 0xf0) == 0x40) pc++; /* rex prefix */
3385
3386 switch (*pc)
3387 {
3388 case 0x58: /* pop %rax/%r8 */
3389 case 0x59: /* pop %rcx/%r9 */
3390 case 0x5a: /* pop %rdx/%r10 */
3391 case 0x5b: /* pop %rbx/%r11 */
3392 case 0x5c: /* pop %rsp/%r12 */
3393 case 0x5d: /* pop %rbp/%r13 */
3394 case 0x5e: /* pop %rsi/%r14 */
3395 case 0x5f: /* pop %rdi/%r15 */
3396 pc++;
3397 continue;
3398 case 0xc2: /* ret $nn */
3399 case 0xc3: /* ret */
3400 return TRUE;
3401 case 0xe9: /* jmp nnnn */
3402 pc += 5 + *(LONG *)(pc + 1);
3403 if (pc - (BYTE *)base >= function->BeginAddress && pc - (BYTE *)base < function->EndAddress)
3404 continue;
3405 break;
3406 case 0xeb: /* jmp n */
3407 pc += 2 + (signed char)pc[1];
3408 if (pc - (BYTE *)base >= function->BeginAddress && pc - (BYTE *)base < function->EndAddress)
3409 continue;
3410 break;
3411 case 0xf3: /* rep; ret (for amd64 prediction bug) */
3412 return pc[1] == 0xc3;
3413 }
3414 return FALSE;
3415 }
3416 }
3417
3418 /* execute a function epilog, which must have been validated with is_inside_epilog() */
3419 static void interpret_epilog( BYTE *pc, CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
3420 {
3421 for (;;)
3422 {
3423 BYTE rex = 0;
3424
3425 if ((*pc & 0xf0) == 0x40) rex = *pc++ & 0x0f; /* rex prefix */
3426
3427 switch (*pc)
3428 {
3429 case 0x58: /* pop %rax/r8 */
3430 case 0x59: /* pop %rcx/r9 */
3431 case 0x5a: /* pop %rdx/r10 */
3432 case 0x5b: /* pop %rbx/r11 */
3433 case 0x5c: /* pop %rsp/r12 */
3434 case 0x5d: /* pop %rbp/r13 */
3435 case 0x5e: /* pop %rsi/r14 */
3436 case 0x5f: /* pop %rdi/r15 */
3437 set_int_reg( context, ctx_ptr, *pc - 0x58 + (rex & 1) * 8, (ULONG64 *)context->Rsp );
3438 context->Rsp += sizeof(ULONG64);
3439 pc++;
3440 continue;
3441 case 0x81: /* add $nnnn,%rsp */
3442 context->Rsp += *(LONG *)(pc + 2);
3443 pc += 2 + sizeof(LONG);
3444 continue;
3445 case 0x83: /* add $n,%rsp */
3446 context->Rsp += (signed char)pc[2];
3447 pc += 3;
3448 continue;
3449 case 0x8d:
3450 if ((pc[1] >> 6) == 1) /* lea n(reg),%rsp */
3451 {
3452 context->Rsp = get_int_reg( context, (pc[1] & 7) + (rex & 1) * 8 ) + (signed char)pc[2];
3453 pc += 3;
3454 }
3455 else /* lea nnnn(reg),%rsp */
3456 {
3457 context->Rsp = get_int_reg( context, (pc[1] & 7) + (rex & 1) * 8 ) + *(LONG *)(pc + 2);
3458 pc += 2 + sizeof(LONG);
3459 }
3460 continue;
3461 case 0xc2: /* ret $nn */
3462 context->Rip = *(ULONG64 *)context->Rsp;
3463 context->Rsp += sizeof(ULONG64) + *(WORD *)(pc + 1);
3464 return;
3465 case 0xc3: /* ret */
3466 case 0xf3: /* rep; ret */
3467 context->Rip = *(ULONG64 *)context->Rsp;
3468 context->Rsp += sizeof(ULONG64);
3469 return;
3470 case 0xe9: /* jmp nnnn */
3471 pc += 5 + *(LONG *)(pc + 1);
3472 continue;
3473 case 0xeb: /* jmp n */
3474 pc += 2 + (signed char)pc[1];
3475 continue;
3476 }
3477 return;
3478 }
3479 }
3480
3481 /**********************************************************************
3482 * RtlVirtualUnwind (NTDLL.@)
3483 */
3484 PVOID WINAPI RtlVirtualUnwind( ULONG type, ULONG64 base, ULONG64 pc,
3485 RUNTIME_FUNCTION *function, CONTEXT *context,
3486 PVOID *data, ULONG64 *frame_ret,
3487 KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
3488 {
3489 union handler_data *handler_data;
3490 ULONG64 frame, off;
3491 struct UNWIND_INFO *info;
3492 unsigned int i, prolog_offset;
3493
3494 TRACE( "type %x rip %lx rsp %lx\n", type, pc, context->Rsp );
3495 if (TRACE_ON(seh)) dump_unwind_info( base, function );
3496
3497 frame = *frame_ret = context->Rsp;
3498 for (;;)
3499 {
3500 info = (struct UNWIND_INFO *)((char *)base + function->UnwindData);
3501 handler_data = (union handler_data *)&info->opcodes[(info->count + 1) & ~1];
3502
3503 if (info->version != 1 && info->version != 2)
3504 {
3505 FIXME( "unknown unwind info version %u at %p\n", info->version, info );
3506 return NULL;
3507 }
3508
3509 if (info->frame_reg)
3510 frame = get_int_reg( context, info->frame_reg ) - info->frame_offset * 16;
3511
3512 /* check if in prolog */
3513 if (pc >= base + function->BeginAddress && pc < base + function->BeginAddress + info->prolog)
3514 {
3515 prolog_offset = pc - base - function->BeginAddress;
3516 }
3517 else
3518 {
3519 prolog_offset = ~0;
3520 if (is_inside_epilog( (BYTE *)pc, base, function ))
3521 {
3522 interpret_epilog( (BYTE *)pc, context, ctx_ptr );
3523 *frame_ret = frame;
3524 return NULL;
3525 }
3526 }
3527
3528 for (i = 0; i < info->count; i += get_opcode_size(info->opcodes[i]))
3529 {
3530 if (prolog_offset < info->opcodes[i].offset) continue; /* skip it */
3531
3532 switch (info->opcodes[i].code)
3533 {
3534 case UWOP_PUSH_NONVOL: /* pushq %reg */
3535 set_int_reg( context, ctx_ptr, info->opcodes[i].info, (ULONG64 *)context->Rsp );
3536 context->Rsp += sizeof(ULONG64);
3537 break;
3538 case UWOP_ALLOC_LARGE: /* subq $nn,%rsp */
3539 if (info->opcodes[i].info) context->Rsp += *(DWORD *)&info->opcodes[i+1];
3540 else context->Rsp += *(USHORT *)&info->opcodes[i+1] * 8;
3541 break;
3542 case UWOP_ALLOC_SMALL: /* subq $n,%rsp */
3543 context->Rsp += (info->opcodes[i].info + 1) * 8;
3544 break;
3545 case UWOP_SET_FPREG: /* leaq nn(%rsp),%framereg */
3546 context->Rsp = *frame_ret = frame;
3547 break;
3548 case UWOP_SAVE_NONVOL: /* movq %reg,n(%rsp) */
3549 off = frame + *(USHORT *)&info->opcodes[i+1] * 8;
3550 set_int_reg( context, ctx_ptr, info->opcodes[i].info, (ULONG64 *)off );
3551 break;
3552 case UWOP_SAVE_NONVOL_FAR: /* movq %reg,nn(%rsp) */
3553 off = frame + *(DWORD *)&info->opcodes[i+1];
3554 set_int_reg( context, ctx_ptr, info->opcodes[i].info, (ULONG64 *)off );
3555 break;
3556 case UWOP_SAVE_XMM128: /* movaps %xmmreg,n(%rsp) */
3557 off = frame + *(USHORT *)&info->opcodes[i+1] * 16;
3558 set_float_reg( context, ctx_ptr, info->opcodes[i].info, (M128A *)off );
3559 break;
3560 case UWOP_SAVE_XMM128_FAR: /* movaps %xmmreg,nn(%rsp) */
3561 off = frame + *(DWORD *)&info->opcodes[i+1];
3562 set_float_reg( context, ctx_ptr, info->opcodes[i].info, (M128A *)off );
3563 break;
3564 case UWOP_PUSH_MACHFRAME:
3565 FIXME( "PUSH_MACHFRAME %u\n", info->opcodes[i].info );
3566 break;
3567 case UWOP_EPILOG:
3568 if (info->version == 2)
3569 break; /* nothing to do */
3570 default:
3571 FIXME( "unknown code %u\n", info->opcodes[i].code );
3572 break;
3573 }
3574 }
3575
3576 if (!(info->flags & UNW_FLAG_CHAININFO)) break;
3577 function = &handler_data->chain; /* restart with the chained info */
3578 }
3579
3580 /* now pop return address */
3581 context->Rip = *(ULONG64 *)context->Rsp;
3582 context->Rsp += sizeof(ULONG64);
3583
3584 if (!(info->flags & type)) return NULL; /* no matching handler */
3585 if (prolog_offset != ~0) return NULL; /* inside prolog */
3586
3587 *data = &handler_data->handler + 1;
3588 return (char *)base + handler_data->handler;
3589 }
3590
3591 struct unwind_exception_frame
3592 {
3593 EXCEPTION_REGISTRATION_RECORD frame;
3594 DISPATCHER_CONTEXT *dispatch;
3595 };
3596
3597 /**********************************************************************
3598 * unwind_exception_handler
3599 *
3600 * Handler for exceptions happening while calling an unwind handler.
3601 */
3602 static DWORD __cdecl unwind_exception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
3603 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
3604 {
3605 struct unwind_exception_frame *unwind_frame = (struct unwind_exception_frame *)frame;
3606 DISPATCHER_CONTEXT *dispatch = (DISPATCHER_CONTEXT *)dispatcher;
3607
3608 /* copy the original dispatcher into the current one, except for the TargetIp */
3609 dispatch->ControlPc = unwind_frame->dispatch->ControlPc;
3610 dispatch->ImageBase = unwind_frame->dispatch->ImageBase;
3611 dispatch->FunctionEntry = unwind_frame->dispatch->FunctionEntry;
3612 dispatch->EstablisherFrame = unwind_frame->dispatch->EstablisherFrame;
3613 dispatch->ContextRecord = unwind_frame->dispatch->ContextRecord;
3614 dispatch->LanguageHandler = unwind_frame->dispatch->LanguageHandler;
3615 dispatch->HandlerData = unwind_frame->dispatch->HandlerData;
3616 dispatch->HistoryTable = unwind_frame->dispatch->HistoryTable;
3617 dispatch->ScopeIndex = unwind_frame->dispatch->ScopeIndex;
3618 TRACE( "detected collided unwind\n" );
3619 return ExceptionCollidedUnwind;
3620 }
3621
3622 /**********************************************************************
3623 * call_unwind_handler
3624 *
3625 * Call a single unwind handler.
3626 */
3627 static DWORD call_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch )
3628 {
3629 struct unwind_exception_frame frame;
3630 DWORD res;
3631
3632 frame.frame.Handler = unwind_exception_handler;
3633 frame.dispatch = dispatch;
3634 __wine_push_frame( &frame.frame );
3635
3636 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
3637 dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
3638 res = dispatch->LanguageHandler( rec, (void *)dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
3639 TRACE( "handler %p returned %x\n", dispatch->LanguageHandler, res );
3640
3641 __wine_pop_frame( &frame.frame );
3642
3643 switch (res)
3644 {
3645 case ExceptionContinueSearch:
3646 case ExceptionCollidedUnwind:
3647 break;
3648 default:
3649 raise_status( STATUS_INVALID_DISPOSITION, rec );
3650 break;
3651 }
3652
3653 return res;
3654 }
3655
3656
3657 /**********************************************************************
3658 * call_teb_unwind_handler
3659 *
3660 * Call a single unwind handler from the TEB chain.
3661 */
3662 static DWORD call_teb_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
3663 EXCEPTION_REGISTRATION_RECORD *teb_frame )
3664 {
3665 DWORD res;
3666
3667 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
3668 teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, dispatch );
3669 res = teb_frame->Handler( rec, teb_frame, dispatch->ContextRecord, (EXCEPTION_REGISTRATION_RECORD**)dispatch );
3670 TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
3671
3672 switch (res)
3673 {
3674 case ExceptionContinueSearch:
3675 case ExceptionCollidedUnwind:
3676 break;
3677 default:
3678 raise_status( STATUS_INVALID_DISPOSITION, rec );
3679 break;
3680 }
3681
3682 return res;
3683 }
3684
3685
3686 /**********************************************************************
3687 * call_consolidate_callback
3688 *
3689 * Wrapper function to call a consolidate callback from a fake frame.
3690 * If the callback executes RtlUnwindEx (like for example done in C++ handlers),
3691 * we have to skip all frames which were already processed. To do that we
3692 * trick the unwinding functions into thinking the call came from somewhere
3693 * else. All CFI instructions are either DW_CFA_def_cfa_expression or
3694 * DW_CFA_expression, and the expressions have the following format:
3695 *
3696 * DW_OP_breg6; sleb128 0x10 | Load %rbp + 0x10
3697 * DW_OP_deref | Get *(%rbp + 0x10) == context
3698 * DW_OP_plus_uconst; uleb128 <OFFSET> | Add offset to get struct member
3699 * [DW_OP_deref] | Dereference, only for CFA
3700 */
3701 extern void * WINAPI call_consolidate_callback( CONTEXT *context,
3702 void *(CALLBACK *callback)(EXCEPTION_RECORD *),
3703 EXCEPTION_RECORD *rec );
3704 __ASM_GLOBAL_FUNC( call_consolidate_callback,
3705 "pushq %rbp\n\t"
3706 __ASM_SEH(".seh_pushreg %rbp\n\t")
3707 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
3708 __ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
3709 "movq %rsp,%rbp\n\t"
3710 __ASM_SEH(".seh_setframe %rbp,0\n\t")
3711 __ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
3712 "subq $0x20,%rsp\n\t"
3713 __ASM_SEH(".seh_stackalloc 0x20\n\t")
3714 __ASM_SEH(".seh_endprologue\n\t")
3715 "movq %rcx,0x10(%rbp)\n\t"
3716 __ASM_CFI(".cfi_remember_state\n\t")
3717 __ASM_CFI(".cfi_escape 0x0f,0x07,0x76,0x10,0x06,0x23,0x98,0x01,0x06\n\t") /* CFA */
3718 __ASM_CFI(".cfi_escape 0x10,0x03,0x06,0x76,0x10,0x06,0x23,0x90,0x01\n\t") /* %rbx */
3719 __ASM_CFI(".cfi_escape 0x10,0x04,0x06,0x76,0x10,0x06,0x23,0xa8,0x01\n\t") /* %rsi */
3720 __ASM_CFI(".cfi_escape 0x10,0x05,0x06,0x76,0x10,0x06,0x23,0xb0,0x01\n\t") /* %rdi */
3721 __ASM_CFI(".cfi_escape 0x10,0x06,0x06,0x76,0x10,0x06,0x23,0xa0,0x01\n\t") /* %rbp */
3722 __ASM_CFI(".cfi_escape 0x10,0x0c,0x06,0x76,0x10,0x06,0x23,0xd8,0x01\n\t") /* %r12 */
3723 __ASM_CFI(".cfi_escape 0x10,0x0d,0x06,0x76,0x10,0x06,0x23,0xe0,0x01\n\t") /* %r13 */
3724 __ASM_CFI(".cfi_escape 0x10,0x0e,0x06,0x76,0x10,0x06,0x23,0xe8,0x01\n\t") /* %r14 */
3725 __ASM_CFI(".cfi_escape 0x10,0x0f,0x06,0x76,0x10,0x06,0x23,0xf0,0x01\n\t") /* %r15 */
3726 __ASM_CFI(".cfi_escape 0x10,0x10,0x06,0x76,0x10,0x06,0x23,0xf8,0x01\n\t") /* %rip */
3727 __ASM_CFI(".cfi_escape 0x10,0x17,0x06,0x76,0x10,0x06,0x23,0x80,0x04\n\t") /* %xmm6 */
3728 __ASM_CFI(".cfi_escape 0x10,0x18,0x06,0x76,0x10,0x06,0x23,0x90,0x04\n\t") /* %xmm7 */
3729 __ASM_CFI(".cfi_escape 0x10,0x19,0x06,0x76,0x10,0x06,0x23,0xa0,0x04\n\t") /* %xmm8 */
3730 __ASM_CFI(".cfi_escape 0x10,0x1a,0x06,0x76,0x10,0x06,0x23,0xb0,0x04\n\t") /* %xmm9 */
3731 __ASM_CFI(".cfi_escape 0x10,0x1b,0x06,0x76,0x10,0x06,0x23,0xc0,0x04\n\t") /* %xmm10 */
3732 __ASM_CFI(".cfi_escape 0x10,0x1c,0x06,0x76,0x10,0x06,0x23,0xd0,0x04\n\t") /* %xmm11 */
3733 __ASM_CFI(".cfi_escape 0x10,0x1d,0x06,0x76,0x10,0x06,0x23,0xe0,0x04\n\t") /* %xmm12 */
3734 __ASM_CFI(".cfi_escape 0x10,0x1e,0x06,0x76,0x10,0x06,0x23,0xf0,0x04\n\t") /* %xmm13 */
3735 __ASM_CFI(".cfi_escape 0x10,0x1f,0x06,0x76,0x10,0x06,0x23,0x80,0x05\n\t") /* %xmm14 */
3736 __ASM_CFI(".cfi_escape 0x10,0x20,0x06,0x76,0x10,0x06,0x23,0x90,0x05\n\t") /* %xmm15 */
3737 "movq %r8,%rcx\n\t"
3738 "callq *%rdx\n\t"
3739 __ASM_CFI(".cfi_restore_state\n\t")
3740 "leaq 0(%rbp),%rsp\n\t"
3741 __ASM_CFI(".cfi_def_cfa_register %rsp\n\t")
3742 "popq %rbp\n\t"
3743 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
3744 __ASM_CFI(".cfi_same_value %rbp\n\t")
3745 "ret")
3746
3747 /*******************************************************************
3748 * RtlRestoreContext (NTDLL.@)
3749 */
3750 void CDECL RtlRestoreContext( CONTEXT *context, EXCEPTION_RECORD *rec )
3751 {
3752 EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
3753
3754 if (rec && rec->ExceptionCode == STATUS_LONGJUMP && rec->NumberParameters >= 1)
3755 {
3756 struct MSVCRT_JUMP_BUFFER *jmp = (struct MSVCRT_JUMP_BUFFER *)rec->ExceptionInformation[0];
3757 context->Rbx = jmp->Rbx;
3758 context->Rsp = jmp->Rsp;
3759 context->Rbp = jmp->Rbp;
3760 context->Rsi = jmp->Rsi;
3761 context->Rdi = jmp->Rdi;
3762 context->R12 = jmp->R12;
3763 context->R13 = jmp->R13;
3764 context->R14 = jmp->R14;
3765 context->R15 = jmp->R15;
3766 context->Rip = jmp->Rip;
3767 context->u.s.Xmm6 = jmp->Xmm6;
3768 context->u.s.Xmm7 = jmp->Xmm7;
3769 context->u.s.Xmm8 = jmp->Xmm8;
3770 context->u.s.Xmm9 = jmp->Xmm9;
3771 context->u.s.Xmm10 = jmp->Xmm10;
3772 context->u.s.Xmm11 = jmp->Xmm11;
3773 context->u.s.Xmm12 = jmp->Xmm12;
3774 context->u.s.Xmm13 = jmp->Xmm13;
3775 context->u.s.Xmm14 = jmp->Xmm14;
3776 context->u.s.Xmm15 = jmp->Xmm15;
3777 }
3778 else if (rec && rec->ExceptionCode == STATUS_UNWIND_CONSOLIDATE && rec->NumberParameters >= 1)
3779 {
3780 PVOID (CALLBACK *consolidate)(EXCEPTION_RECORD *) = (void *)rec->ExceptionInformation[0];
3781 TRACE( "calling consolidate callback %p (rec=%p)\n", consolidate, rec );
3782 context->Rip = (ULONG64)call_consolidate_callback( context, consolidate, rec );
3783 }
3784
3785 /* hack: remove no longer accessible TEB frames */
3786 while ((ULONG64)teb_frame < context->Rsp)
3787 {
3788 TRACE( "removing TEB frame: %p\n", teb_frame );
3789 teb_frame = __wine_pop_frame( teb_frame );
3790 }
3791
3792 TRACE( "returning to %lx stack %lx\n", context->Rip, context->Rsp );
3793 set_cpu_context( context );
3794 }
3795
3796
3797 /*******************************************************************
3798 * RtlUnwindEx (NTDLL.@)
3799 */
3800 void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec,
3801 PVOID retval, CONTEXT *context, UNWIND_HISTORY_TABLE *table )
3802 {
3803 EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
3804 EXCEPTION_RECORD record;
3805 DISPATCHER_CONTEXT dispatch;
3806 CONTEXT new_context;
3807 NTSTATUS status;
3808 DWORD i;
3809
3810 RtlCaptureContext( context );
3811 new_context = *context;
3812
3813 /* build an exception record, if we do not have one */
3814 if (!rec)
3815 {
3816 record.ExceptionCode = STATUS_UNWIND;
3817 record.ExceptionFlags = 0;
3818 record.ExceptionRecord = NULL;
3819 record.ExceptionAddress = (void *)context->Rip;
3820 record.NumberParameters = 0;
3821 rec = &record;
3822 }
3823
3824 rec->ExceptionFlags |= EH_UNWINDING | (end_frame ? 0 : EH_EXIT_UNWIND);
3825
3826 TRACE( "code=%x flags=%x end_frame=%p target_ip=%p rip=%016lx\n",
3827 rec->ExceptionCode, rec->ExceptionFlags, end_frame, target_ip, context->Rip );
3828 for (i = 0; i < min( EXCEPTION_MAXIMUM_PARAMETERS, rec->NumberParameters ); i++)
3829 TRACE( " info[%d]=%016lx\n", i, rec->ExceptionInformation[i] );
3830 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
3831 context->Rax, context->Rbx, context->Rcx, context->Rdx );
3832 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
3833 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
3834 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
3835 context->R8, context->R9, context->R10, context->R11 );
3836 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
3837 context->R12, context->R13, context->R14, context->R15 );
3838
3839 dispatch.EstablisherFrame = context->Rsp;
3840 dispatch.TargetIp = (ULONG64)target_ip;
3841 dispatch.ContextRecord = context;
3842 dispatch.HistoryTable = table;
3843
3844 for (;;)
3845 {
3846 status = virtual_unwind( UNW_FLAG_UHANDLER, &dispatch, &new_context );
3847 if (status != STATUS_SUCCESS) raise_status( status, rec );
3848
3849 unwind_done:
3850 if (!dispatch.EstablisherFrame) break;
3851
3852 if (is_inside_signal_stack( (void *)dispatch.EstablisherFrame ))
3853 {
3854 TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch.EstablisherFrame,
3855 get_signal_stack(), (char *)get_signal_stack() + signal_stack_size );
3856 *context = new_context;
3857 continue;
3858 }
3859
3860 if ((dispatch.EstablisherFrame & 7) ||
3861 dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
3862 dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)
3863 {
3864 ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
3865 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
3866 rec->ExceptionFlags |= EH_STACK_INVALID;
3867 break;
3868 }
3869
3870 if (dispatch.LanguageHandler)
3871 {
3872 if (end_frame && (dispatch.EstablisherFrame > (ULONG64)end_frame))
3873 {
3874 ERR( "invalid end frame %lx/%p\n", dispatch.EstablisherFrame, end_frame );
3875 raise_status( STATUS_INVALID_UNWIND_TARGET, rec );
3876 }
3877 if (dispatch.EstablisherFrame == (ULONG64)end_frame) rec->ExceptionFlags |= EH_TARGET_UNWIND;
3878 if (call_unwind_handler( rec, &dispatch ) == ExceptionCollidedUnwind)
3879 {
3880 ULONG64 frame;
3881
3882 *context = new_context = *dispatch.ContextRecord;
3883 dispatch.ContextRecord = context;
3884 RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
3885 dispatch.ControlPc, dispatch.FunctionEntry,
3886 &new_context, NULL, &frame, NULL );
3887 rec->ExceptionFlags |= EH_COLLIDED_UNWIND;
3888 goto unwind_done;
3889 }
3890 rec->ExceptionFlags &= ~EH_COLLIDED_UNWIND;
3891 }
3892 else /* hack: call builtin handlers registered in the tib list */
3893 {
3894 DWORD64 backup_frame = dispatch.EstablisherFrame;
3895 while ((ULONG64)teb_frame < new_context.Rsp && (ULONG64)teb_frame < (ULONG64)end_frame)
3896 {
3897 TRACE( "found builtin frame %p handler %p\n", teb_frame, teb_frame->Handler );
3898 dispatch.EstablisherFrame = (ULONG64)teb_frame;
3899 if (call_teb_unwind_handler( rec, &dispatch, teb_frame ) == ExceptionCollidedUnwind)
3900 {
3901 ULONG64 frame;
3902
3903 teb_frame = __wine_pop_frame( teb_frame );
3904
3905 *context = new_context = *dispatch.ContextRecord;
3906 dispatch.ContextRecord = context;
3907 RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
3908 dispatch.ControlPc, dispatch.FunctionEntry,
3909 &new_context, NULL, &frame, NULL );
3910 rec->ExceptionFlags |= EH_COLLIDED_UNWIND;
3911 goto unwind_done;
3912 }
3913 teb_frame = __wine_pop_frame( teb_frame );
3914 }
3915 if ((ULONG64)teb_frame == (ULONG64)end_frame && (ULONG64)end_frame < new_context.Rsp) break;
3916 dispatch.EstablisherFrame = backup_frame;
3917 }
3918
3919 if (dispatch.EstablisherFrame == (ULONG64)end_frame) break;
3920 *context = new_context;
3921 }
3922
3923 context->Rax = (ULONG64)retval;
3924 context->Rip = (ULONG64)target_ip;
3925 RtlRestoreContext(context, rec);
3926 }
3927
3928
3929 /*******************************************************************
3930 * RtlUnwind (NTDLL.@)
3931 */
3932 void WINAPI RtlUnwind( void *frame, void *target_ip, EXCEPTION_RECORD *rec, void *retval )
3933 {
3934 CONTEXT context;
3935 RtlUnwindEx( frame, target_ip, rec, retval, &context, NULL );
3936 }
3937
3938
3939 /*******************************************************************
3940 * _local_unwind (NTDLL.@)
3941 */
3942 void WINAPI _local_unwind( void *frame, void *target_ip )
3943 {
3944 CONTEXT context;
3945 RtlUnwindEx( frame, target_ip, NULL, NULL, &context, NULL );
3946 }
3947
3948 /*******************************************************************
3949 * __C_specific_handler (NTDLL.@)
3950 */
3951 EXCEPTION_DISPOSITION WINAPI __C_specific_handler( EXCEPTION_RECORD *rec,
3952 void *frame,
3953 CONTEXT *context,
3954 struct _DISPATCHER_CONTEXT *dispatch )
3955 {
3956 SCOPE_TABLE *table = dispatch->HandlerData;
3957 ULONG i;
3958
3959 TRACE( "%p %p %p %p\n", rec, frame, context, dispatch );
3960 if (TRACE_ON(seh)) dump_scope_table( dispatch->ImageBase, table );
3961
3962 if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
3963 {
3964 for (i = dispatch->ScopeIndex; i < table->Count; i++)
3965 {
3966 if (dispatch->ControlPc >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
3967 dispatch->ControlPc < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
3968 {
3969 PTERMINATION_HANDLER handler;
3970
3971 if (table->ScopeRecord[i].JumpTarget) continue;
3972
3973 if (rec->ExceptionFlags & EH_TARGET_UNWIND &&
3974 dispatch->TargetIp >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
3975 dispatch->TargetIp < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
3976 {
3977 break;
3978 }
3979
3980 handler = (PTERMINATION_HANDLER)(dispatch->ImageBase + table->ScopeRecord[i].HandlerAddress);
3981 dispatch->ScopeIndex = i+1;
3982
3983 TRACE( "calling __finally %p frame %p\n", handler, frame );
3984 handler( TRUE, frame );
3985 }
3986 }
3987 return ExceptionContinueSearch;
3988 }
3989
3990 for (i = dispatch->ScopeIndex; i < table->Count; i++)
3991 {
3992 if (dispatch->ControlPc >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
3993 dispatch->ControlPc < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
3994 {
3995 if (!table->ScopeRecord[i].JumpTarget) continue;
3996 if (table->ScopeRecord[i].HandlerAddress != EXCEPTION_EXECUTE_HANDLER)
3997 {
3998 EXCEPTION_POINTERS ptrs;
3999 PEXCEPTION_FILTER filter;
4000
4001 filter = (PEXCEPTION_FILTER)(dispatch->ImageBase + table->ScopeRecord[i].HandlerAddress);
4002 ptrs.ExceptionRecord = rec;
4003 ptrs.ContextRecord = context;
4004 TRACE( "calling filter %p ptrs %p frame %p\n", filter, &ptrs, frame );
4005 switch (filter( &ptrs, frame ))
4006 {
4007 case EXCEPTION_EXECUTE_HANDLER:
4008 break;
4009 case EXCEPTION_CONTINUE_SEARCH:
4010 continue;
4011 case EXCEPTION_CONTINUE_EXECUTION:
4012 return ExceptionContinueExecution;
4013 }
4014 }
4015 TRACE( "unwinding to target %lx\n", dispatch->ImageBase + table->ScopeRecord[i].JumpTarget );
4016 RtlUnwindEx( frame, (char *)dispatch->ImageBase + table->ScopeRecord[i].JumpTarget,
4017 rec, 0, dispatch->ContextRecord, dispatch->HistoryTable );
4018 }
4019 }
4020 return ExceptionContinueSearch;
4021 }
4022
4023
4024 /***********************************************************************
4025 * RtlRaiseException (NTDLL.@)
4026 */
4027 __ASM_GLOBAL_FUNC( RtlRaiseException,
4028 "sub $0x4f8,%rsp\n\t"
4029 __ASM_SEH(".seh_stackalloc 0x4f8\n\t")
4030 __ASM_SEH(".seh_endprologue\n\t")
4031 __ASM_CFI(".cfi_adjust_cfa_offset 0x4f8\n\t")
4032 "movq %rcx,0x500(%rsp)\n\t"
4033 "leaq 0x20(%rsp),%rcx\n\t"
4034 "call " __ASM_NAME("RtlCaptureContext") "\n\t"
4035 "leaq 0x20(%rsp),%rdx\n\t" /* context pointer */
4036 "leaq 0x500(%rsp),%rax\n\t" /* orig stack pointer */
4037 "movq %rax,0x98(%rdx)\n\t" /* context->Rsp */
4038 "movq (%rax),%rcx\n\t" /* original first parameter */
4039 "movq %rcx,0x80(%rdx)\n\t" /* context->Rcx */
4040 "movq 0x4f8(%rsp),%rax\n\t" /* return address */
4041 "movq %rax,0xf8(%rdx)\n\t" /* context->Rip */
4042 "movq %rax,0x10(%rcx)\n\t" /* rec->ExceptionAddress */
4043 "movl $1,%r8d\n\t"
4044 "call " __ASM_NAME("NtRaiseException") "\n\t"
4045 "movq %rax,%rcx\n\t"
4046 "call " __ASM_NAME("RtlRaiseStatus") /* does not return */ );
4047
4048
4049 static inline ULONG hash_pointers( void **ptrs, ULONG count )
4050 {
4051 /* Based on MurmurHash2, which is in the public domain */
4052 static const ULONG m = 0x5bd1e995;
4053 static const ULONG r = 24;
4054 ULONG hash = count * sizeof(void*);
4055 for (; count > 0; ptrs++, count--)
4056 {
4057 ULONG_PTR data = (ULONG_PTR)*ptrs;
4058 ULONG k1 = (ULONG)(data & 0xffffffff), k2 = (ULONG)(data >> 32);
4059 k1 *= m;
4060 k1 = (k1 ^ (k1 >> r)) * m;
4061 k2 *= m;
4062 k2 = (k2 ^ (k2 >> r)) * m;
4063 hash = (((hash * m) ^ k1) * m) ^ k2;
4064 }
4065 hash = (hash ^ (hash >> 13)) * m;
4066 return hash ^ (hash >> 15);
4067 }
4068
4069
4070 /*************************************************************************
4071 * RtlCaptureStackBackTrace (NTDLL.@)
4072 */
4073 USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
4074 {
4075 UNWIND_HISTORY_TABLE table;
4076 DISPATCHER_CONTEXT dispatch;
4077 CONTEXT context;
4078 NTSTATUS status;
4079 ULONG i;
4080 USHORT num_entries = 0;
4081
4082 TRACE( "(%u, %u, %p, %p)\n", skip, count, buffer, hash );
4083
4084 RtlCaptureContext( &context );
4085 dispatch.TargetIp = 0;
4086 dispatch.ContextRecord = &context;
4087 dispatch.HistoryTable = &table;
4088 if (hash) *hash = 0;
4089 for (i = 0; i < skip + count; i++)
4090 {
4091 status = virtual_unwind( UNW_FLAG_NHANDLER, &dispatch, &context );
4092 if (status != STATUS_SUCCESS) return i;
4093
4094 if (!dispatch.EstablisherFrame) break;
4095
4096 if ((dispatch.EstablisherFrame & 7) ||
4097 dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
4098 dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)
4099 {
4100 ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
4101 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
4102 break;
4103 }
4104
4105 if (context.Rsp == (ULONG64)NtCurrentTeb()->Tib.StackBase) break;
4106
4107 if (i >= skip) buffer[num_entries++] = (void *)context.Rip;
4108 }
4109 if (hash && num_entries > 0) *hash = hash_pointers( buffer, num_entries );
4110 TRACE( "captured %hu frames\n", num_entries );
4111 return num_entries;
4112 }
4113
4114
4115 /***********************************************************************
4116 * call_thread_func
4117 */
4118 static void WINAPI call_thread_func( LPTHREAD_START_ROUTINE entry, void *arg )
4119 {
4120 __TRY
4121 {
4122 TRACE_(relay)( "\1Starting thread proc %p (arg=%p)\n", entry, arg );
4123 RtlExitUserThread( entry( arg ));
4124 }
4125 __EXCEPT(call_unhandled_exception_filter)
4126 {
4127 NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
4128 }
4129 __ENDTRY
4130 abort(); /* should not be reached */
4131 }
4132
4133
4134 extern void DECLSPEC_NORETURN start_thread( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend,
4135 void *relay );
4136 __ASM_GLOBAL_FUNC( start_thread,
4137 "subq $56,%rsp\n\t"
4138 __ASM_SEH(".seh_stackalloc 56\n\t")
4139 __ASM_SEH(".seh_endprologue\n\t")
4140 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
4141 "movq %rbp,48(%rsp)\n\t"
4142 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
4143 "movq %rbx,40(%rsp)\n\t"
4144 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
4145 "movq %r12,32(%rsp)\n\t"
4146 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
4147 "movq %r13,24(%rsp)\n\t"
4148 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
4149 "movq %r14,16(%rsp)\n\t"
4150 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
4151 "movq %r15,8(%rsp)\n\t"
4152 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
4153 /* store exit frame */
4154 "movq %gs:0x30,%rax\n\t"
4155 "movq %rsp,0x330(%rax)\n\t" /* amd64_thread_data()->exit_frame */
4156 /* switch to thread stack */
4157 "movq 8(%rax),%rax\n\t" /* NtCurrentTeb()->Tib.StackBase */
4158 "leaq -0x1000(%rax),%rsp\n\t"
4159 /* attach dlls */
4160 "call " __ASM_NAME("attach_thread") "\n\t"
4161 "movq %rax,%rsp\n\t"
4162 /* clear the stack */
4163 "andq $~0xfff,%rax\n\t" /* round down to page size */
4164 "movq %rax,%rdi\n\t"
4165 "call " __ASM_NAME("virtual_clear_thread_stack") "\n\t"
4166 /* switch to the initial context */
4167 "movq %rsp,%rdi\n\t"
4168 "call " __ASM_NAME("set_cpu_context") )
4169
4170 extern void DECLSPEC_NORETURN call_thread_exit_func( int status, void (*func)(int) );
4171 __ASM_GLOBAL_FUNC( call_thread_exit_func,
4172 /* fetch exit frame */
4173 "movq %gs:0x30,%rax\n\t"
4174 "movq 0x330(%rax),%rdx\n\t" /* amd64_thread_data()->exit_frame */
4175 "testq %rdx,%rdx\n\t"
4176 "jnz 1f\n\t"
4177 "jmp *%rsi\n"
4178 /* switch to exit frame stack */
4179 "1:\tmovq $0,0x330(%rax)\n\t"
4180 "movq %rdx,%rsp\n\t"
4181 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
4182 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
4183 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
4184 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
4185 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
4186 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
4187 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
4188 "call *%rsi" )
4189
4190
4191 /***********************************************************************
4192 * init_thread_context
4193 */
4194 static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, void *relay )
4195 {
4196 __asm__( "movw %%cs,%0" : "=m" (context->SegCs) );
4197 __asm__( "movw %%ss,%0" : "=m" (context->SegSs) );
4198 context->Rcx = (ULONG_PTR)entry;
4199 context->Rdx = (ULONG_PTR)arg;
4200 context->Rsp = (ULONG_PTR)NtCurrentTeb()->Tib.StackBase - 0x28;
4201 context->Rip = (ULONG_PTR)relay;
4202 context->EFlags = 0x200;
4203 context->u.FltSave.ControlWord = 0x27f;
4204 context->u.FltSave.MxCsr = context->MxCsr = 0x1f80;
4205 }
4206
4207
4208 /***********************************************************************
4209 * attach_thread
4210 */
4211 PCONTEXT DECLSPEC_HIDDEN attach_thread( LPTHREAD_START_ROUTINE entry, void *arg,
4212 BOOL suspend, void *relay )
4213 {
4214 CONTEXT *ctx;
4215
4216 if (suspend)
4217 {
4218 CONTEXT context = { 0 };
4219
4220 context.ContextFlags = CONTEXT_ALL;
4221 init_thread_context( &context, entry, arg, relay );
4222 wait_suspend( &context );
4223 ctx = (CONTEXT *)((ULONG_PTR)context.Rsp & ~15) - 1;
4224 *ctx = context;
4225 }
4226 else
4227 {
4228 ctx = (CONTEXT *)((char *)NtCurrentTeb()->Tib.StackBase - 0x30) - 1;
4229 init_thread_context( ctx, entry, arg, relay );
4230 }
4231 ctx->ContextFlags = CONTEXT_FULL;
4232 LdrInitializeThunk( ctx, (void **)&ctx->Rcx, 0, 0 );
4233 return ctx;
4234 }
4235
4236
4237 /***********************************************************************
4238 * signal_start_thread
4239 *
4240 * Thread startup sequence:
4241 * signal_start_thread()
4242 * -> start_thread()
4243 * -> call_thread_func()
4244 */
4245 void signal_start_thread( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend )
4246 {
4247 start_thread( entry, arg, suspend, call_thread_func );
4248 }
4249
4250
4251 /**********************************************************************
4252 * signal_start_process
4253 *
4254 * Process startup sequence:
4255 * signal_start_process()
4256 * -> start_thread()
4257 * -> kernel32_start_process()
4258 */
4259 void signal_start_process( LPTHREAD_START_ROUTINE entry, BOOL suspend )
4260 {
4261 start_thread( entry, NtCurrentTeb()->Peb, suspend, kernel32_start_process );
4262 }
4263
4264
4265 /***********************************************************************
4266 * signal_exit_thread
4267 */
4268 void signal_exit_thread( int status )
4269 {
4270 call_thread_exit_func( status, exit_thread );
4271 }
4272
4273 /***********************************************************************
4274 * signal_exit_process
4275 */
4276 void signal_exit_process( int status )
4277 {
4278 call_thread_exit_func( status, exit );
4279 }
4280
4281 /**********************************************************************
4282 * DbgBreakPoint (NTDLL.@)
4283 */
4284 __ASM_STDCALL_FUNC( DbgBreakPoint, 0, "int $3; ret")
4285
4286 /**********************************************************************
4287 * DbgUserBreakPoint (NTDLL.@)
4288 */
4289 __ASM_STDCALL_FUNC( DbgUserBreakPoint, 0, "int $3; ret")
4290
4291 #endif /* __x86_64__ */
Windows API implementation