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dpnet/tests: Add a trailing '\n' to some ok() calls.
[wine.git] / dlls / ntdll / signal_x86_64.c
blob05581c27fff47079d349bf01f9315a257d410528
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
55 #define NONAMELESSUNION
56 #define NONAMELESSSTRUCT
57 #include "ntstatus.h"
58 #define WIN32_NO_STATUS
59 #include "windef.h"
60 #include "winternl.h"
61 #include "wine/library.h"
62 #include "wine/exception.h"
63 #include "wine/list.h"
64 #include "ntdll_misc.h"
65 #include "wine/debug.h"
66
67 #ifdef HAVE_VALGRIND_MEMCHECK_H
68 #include <valgrind/memcheck.h>
69 #endif
70
71 WINE_DEFAULT_DEBUG_CHANNEL(seh);
72
73 struct _DISPATCHER_CONTEXT;
74
75 typedef LONG (WINAPI *PC_LANGUAGE_EXCEPTION_HANDLER)( EXCEPTION_POINTERS *ptrs, ULONG64 frame );
76 typedef EXCEPTION_DISPOSITION (WINAPI *PEXCEPTION_ROUTINE)( EXCEPTION_RECORD *rec,
77 ULONG64 frame,
78 CONTEXT *context,
79 struct _DISPATCHER_CONTEXT *dispatch );
80
81 typedef struct _DISPATCHER_CONTEXT
82 {
83 ULONG64 ControlPc;
84 ULONG64 ImageBase;
85 PRUNTIME_FUNCTION FunctionEntry;
86 ULONG64 EstablisherFrame;
87 ULONG64 TargetIp;
88 PCONTEXT ContextRecord;
89 PEXCEPTION_ROUTINE LanguageHandler;
90 PVOID HandlerData;
91 PUNWIND_HISTORY_TABLE HistoryTable;
92 ULONG ScopeIndex;
93 } DISPATCHER_CONTEXT, *PDISPATCHER_CONTEXT;
94
95 typedef struct _SCOPE_TABLE
96 {
97 ULONG Count;
98 struct
99 {
100 ULONG BeginAddress;
101 ULONG EndAddress;
102 ULONG HandlerAddress;
103 ULONG JumpTarget;
104 } ScopeRecord[1];
105 } SCOPE_TABLE, *PSCOPE_TABLE;
106
107
108 /* layering violation: the setjmp buffer is defined in msvcrt, but used by RtlUnwindEx */
109 struct MSVCRT_JUMP_BUFFER
110 {
111 ULONG64 Frame;
112 ULONG64 Rbx;
113 ULONG64 Rsp;
114 ULONG64 Rbp;
115 ULONG64 Rsi;
116 ULONG64 Rdi;
117 ULONG64 R12;
118 ULONG64 R13;
119 ULONG64 R14;
120 ULONG64 R15;
121 ULONG64 Rip;
122 ULONG64 Spare;
123 M128A Xmm6;
124 M128A Xmm7;
125 M128A Xmm8;
126 M128A Xmm9;
127 M128A Xmm10;
128 M128A Xmm11;
129 M128A Xmm12;
130 M128A Xmm13;
131 M128A Xmm14;
132 M128A Xmm15;
133 };
134
135 /***********************************************************************
136 * signal context platform-specific definitions
137 */
138 #ifdef linux
139
140 #include <asm/prctl.h>
141 static inline int arch_prctl( int func, void *ptr ) { return syscall( __NR_arch_prctl, func, ptr ); }
142
143 #define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
144 #define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
145 #define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
146 #define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
147 #define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
148 #define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
149 #define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
150 #define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
151 #define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
152 #define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
153 #define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
154 #define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
155 #define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
156 #define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
157 #define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
158
159 #define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
160 #define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
161 #define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
162
163 #define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
164 #define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
165 #define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
166 #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
167 #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
168
169 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
170
171 #elif defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
172
173 #define RAX_sig(context) ((context)->uc_mcontext.mc_rax)
174 #define RBX_sig(context) ((context)->uc_mcontext.mc_rbx)
175 #define RCX_sig(context) ((context)->uc_mcontext.mc_rcx)
176 #define RDX_sig(context) ((context)->uc_mcontext.mc_rdx)
177 #define RSI_sig(context) ((context)->uc_mcontext.mc_rsi)
178 #define RDI_sig(context) ((context)->uc_mcontext.mc_rdi)
179 #define RBP_sig(context) ((context)->uc_mcontext.mc_rbp)
180 #define R8_sig(context) ((context)->uc_mcontext.mc_r8)
181 #define R9_sig(context) ((context)->uc_mcontext.mc_r9)
182 #define R10_sig(context) ((context)->uc_mcontext.mc_r10)
183 #define R11_sig(context) ((context)->uc_mcontext.mc_r11)
184 #define R12_sig(context) ((context)->uc_mcontext.mc_r12)
185 #define R13_sig(context) ((context)->uc_mcontext.mc_r13)
186 #define R14_sig(context) ((context)->uc_mcontext.mc_r14)
187 #define R15_sig(context) ((context)->uc_mcontext.mc_r15)
188
189 #define CS_sig(context) ((context)->uc_mcontext.mc_cs)
190 #define DS_sig(context) ((context)->uc_mcontext.mc_ds)
191 #define ES_sig(context) ((context)->uc_mcontext.mc_es)
192 #define FS_sig(context) ((context)->uc_mcontext.mc_fs)
193 #define GS_sig(context) ((context)->uc_mcontext.mc_gs)
194 #define SS_sig(context) ((context)->uc_mcontext.mc_ss)
195
196 #define EFL_sig(context) ((context)->uc_mcontext.mc_rflags)
197
198 #define RIP_sig(context) ((context)->uc_mcontext.mc_rip)
199 #define RSP_sig(context) ((context)->uc_mcontext.mc_rsp)
200 #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
201 #define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
202
203 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.mc_fpstate))
204
205 #elif defined(__NetBSD__)
206
207 #define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
208 #define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
209 #define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
210 #define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
211 #define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
212 #define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
213 #define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
214 #define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
215 #define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
216 #define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
217 #define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
218 #define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
219 #define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
220 #define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
221 #define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
222
223 #define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
224 #define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
225 #define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
226 #define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
227 #define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
228 #define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
229
230 #define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
231
232 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
233 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
234
235 #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
236 #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
237
238 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
239 #else
240 #error You must define the signal context functions for your platform
241 #endif
242
243 enum i386_trap_code
244 {
245 TRAP_x86_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
246 TRAP_x86_DIVIDE = 0, /* Division by zero exception */
247 TRAP_x86_TRCTRAP = 1, /* Single-step exception */
248 TRAP_x86_NMI = 2, /* NMI interrupt */
249 TRAP_x86_BPTFLT = 3, /* Breakpoint exception */
250 TRAP_x86_OFLOW = 4, /* Overflow exception */
251 TRAP_x86_BOUND = 5, /* Bound range exception */
252 TRAP_x86_PRIVINFLT = 6, /* Invalid opcode exception */
253 TRAP_x86_DNA = 7, /* Device not available exception */
254 TRAP_x86_DOUBLEFLT = 8, /* Double fault exception */
255 TRAP_x86_FPOPFLT = 9, /* Coprocessor segment overrun */
256 TRAP_x86_TSSFLT = 10, /* Invalid TSS exception */
257 TRAP_x86_SEGNPFLT = 11, /* Segment not present exception */
258 TRAP_x86_STKFLT = 12, /* Stack fault */
259 TRAP_x86_PROTFLT = 13, /* General protection fault */
260 TRAP_x86_PAGEFLT = 14, /* Page fault */
261 TRAP_x86_ARITHTRAP = 16, /* Floating point exception */
262 TRAP_x86_ALIGNFLT = 17, /* Alignment check exception */
263 TRAP_x86_MCHK = 18, /* Machine check exception */
264 TRAP_x86_CACHEFLT = 19 /* Cache flush exception */
265 };
266
267 static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
268 static size_t signal_stack_size;
269
270 typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
271 typedef int (*wine_signal_handler)(unsigned int sig);
272
273 static wine_signal_handler handlers[256];
274
275 /***********************************************************************
276 * Dynamic unwind table
277 */
278
279 struct dynamic_unwind_entry
280 {
281 struct list entry;
282
283 /* memory region which matches this entry */
284 DWORD64 base;
285 DWORD size;
286
287 /* lookup table */
288 RUNTIME_FUNCTION *table;
289 DWORD table_size;
290
291 /* user defined callback */
292 PGET_RUNTIME_FUNCTION_CALLBACK callback;
293 PVOID context;
294 };
295
296 static struct list dynamic_unwind_list = LIST_INIT(dynamic_unwind_list);
297
298 static RTL_CRITICAL_SECTION dynamic_unwind_section;
299 static RTL_CRITICAL_SECTION_DEBUG dynamic_unwind_debug =
300 {
301 0, 0, &dynamic_unwind_section,
302 { &dynamic_unwind_debug.ProcessLocksList, &dynamic_unwind_debug.ProcessLocksList },
303 0, 0, { (DWORD_PTR)(__FILE__ ": dynamic_unwind_section") }
304 };
305 static RTL_CRITICAL_SECTION dynamic_unwind_section = { &dynamic_unwind_debug, -1, 0, 0, 0, 0 };
306
307 /***********************************************************************
308 * Definitions for Win32 unwind tables
309 */
310
311 union handler_data
312 {
313 RUNTIME_FUNCTION chain;
314 ULONG handler;
315 };
316
317 struct opcode
318 {
319 BYTE offset;
320 BYTE code : 4;
321 BYTE info : 4;
322 };
323
324 struct UNWIND_INFO
325 {
326 BYTE version : 3;
327 BYTE flags : 5;
328 BYTE prolog;
329 BYTE count;
330 BYTE frame_reg : 4;
331 BYTE frame_offset : 4;
332 struct opcode opcodes[1]; /* info->count entries */
333 /* followed by handler_data */
334 };
335
336 #define UWOP_PUSH_NONVOL 0
337 #define UWOP_ALLOC_LARGE 1
338 #define UWOP_ALLOC_SMALL 2
339 #define UWOP_SET_FPREG 3
340 #define UWOP_SAVE_NONVOL 4
341 #define UWOP_SAVE_NONVOL_FAR 5
342 #define UWOP_SAVE_XMM128 8
343 #define UWOP_SAVE_XMM128_FAR 9
344 #define UWOP_PUSH_MACHFRAME 10
345
346 static void dump_unwind_info( ULONG64 base, RUNTIME_FUNCTION *function )
347 {
348 static const char * const reg_names[16] =
349 { "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
350 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" };
351
352 union handler_data *handler_data;
353 struct UNWIND_INFO *info;
354 unsigned int i, count;
355
356 TRACE( "**** func %x-%x\n", function->BeginAddress, function->EndAddress );
357 for (;;)
358 {
359 if (function->UnwindData & 1)
360 {
361 RUNTIME_FUNCTION *next = (RUNTIME_FUNCTION *)((char *)base + (function->UnwindData & ~1));
362 TRACE( "unwind info for function %p-%p chained to function %p-%p\n",
363 (char *)base + function->BeginAddress, (char *)base + function->EndAddress,
364 (char *)base + next->BeginAddress, (char *)base + next->EndAddress );
365 function = next;
366 continue;
367 }
368 info = (struct UNWIND_INFO *)((char *)base + function->UnwindData);
369
370 TRACE( "unwind info at %p flags %x prolog 0x%x bytes function %p-%p\n",
371 info, info->flags, info->prolog,
372 (char *)base + function->BeginAddress, (char *)base + function->EndAddress );
373
374 if (info->frame_reg)
375 TRACE( " frame register %s offset 0x%x(%%rsp)\n",
376 reg_names[info->frame_reg], info->frame_offset * 16 );
377
378 for (i = 0; i < info->count; i++)
379 {
380 TRACE( " 0x%x: ", info->opcodes[i].offset );
381 switch (info->opcodes[i].code)
382 {
383 case UWOP_PUSH_NONVOL:
384 TRACE( "pushq %%%s\n", reg_names[info->opcodes[i].info] );
385 break;
386 case UWOP_ALLOC_LARGE:
387 if (info->opcodes[i].info)
388 {
389 count = *(DWORD *)&info->opcodes[i+1];
390 i += 2;
391 }
392 else
393 {
394 count = *(USHORT *)&info->opcodes[i+1] * 8;
395 i++;
396 }
397 TRACE( "subq $0x%x,%%rsp\n", count );
398 break;
399 case UWOP_ALLOC_SMALL:
400 count = (info->opcodes[i].info + 1) * 8;
401 TRACE( "subq $0x%x,%%rsp\n", count );
402 break;
403 case UWOP_SET_FPREG:
404 TRACE( "leaq 0x%x(%%rsp),%s\n",
405 info->frame_offset * 16, reg_names[info->frame_reg] );
406 break;
407 case UWOP_SAVE_NONVOL:
408 count = *(USHORT *)&info->opcodes[i+1] * 8;
409 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names[info->opcodes[i].info], count );
410 i++;
411 break;
412 case UWOP_SAVE_NONVOL_FAR:
413 count = *(DWORD *)&info->opcodes[i+1];
414 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names[info->opcodes[i].info], count );
415 i += 2;
416 break;
417 case UWOP_SAVE_XMM128:
418 count = *(USHORT *)&info->opcodes[i+1] * 16;
419 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info->opcodes[i].info, count );
420 i++;
421 break;
422 case UWOP_SAVE_XMM128_FAR:
423 count = *(DWORD *)&info->opcodes[i+1];
424 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info->opcodes[i].info, count );
425 i += 2;
426 break;
427 case UWOP_PUSH_MACHFRAME:
428 TRACE( "PUSH_MACHFRAME %u\n", info->opcodes[i].info );
429 break;
430 default:
431 FIXME( "unknown code %u\n", info->opcodes[i].code );
432 break;
433 }
434 }
435
436 handler_data = (union handler_data *)&info->opcodes[(info->count + 1) & ~1];
437 if (info->flags & UNW_FLAG_CHAININFO)
438 {
439 TRACE( " chained to function %p-%p\n",
440 (char *)base + handler_data->chain.BeginAddress,
441 (char *)base + handler_data->chain.EndAddress );
442 function = &handler_data->chain;
443 continue;
444 }
445 if (info->flags & (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER))
446 TRACE( " handler %p data at %p\n",
447 (char *)base + handler_data->handler, &handler_data->handler + 1 );
448 break;
449 }
450 }
451
452 static void dump_scope_table( ULONG64 base, const SCOPE_TABLE *table )
453 {
454 unsigned int i;
455
456 TRACE( "scope table at %p\n", table );
457 for (i = 0; i < table->Count; i++)
458 TRACE( " %u: %lx-%lx handler %lx target %lx\n", i,
459 base + table->ScopeRecord[i].BeginAddress,
460 base + table->ScopeRecord[i].EndAddress,
461 base + table->ScopeRecord[i].HandlerAddress,
462 base + table->ScopeRecord[i].JumpTarget );
463 }
464
465
466 /***********************************************************************
467 * Definitions for Dwarf unwind tables
468 */
469
470 enum dwarf_call_frame_info
471 {
472 DW_CFA_advance_loc = 0x40,
473 DW_CFA_offset = 0x80,
474 DW_CFA_restore = 0xc0,
475 DW_CFA_nop = 0x00,
476 DW_CFA_set_loc = 0x01,
477 DW_CFA_advance_loc1 = 0x02,
478 DW_CFA_advance_loc2 = 0x03,
479 DW_CFA_advance_loc4 = 0x04,
480 DW_CFA_offset_extended = 0x05,
481 DW_CFA_restore_extended = 0x06,
482 DW_CFA_undefined = 0x07,
483 DW_CFA_same_value = 0x08,
484 DW_CFA_register = 0x09,
485 DW_CFA_remember_state = 0x0a,
486 DW_CFA_restore_state = 0x0b,
487 DW_CFA_def_cfa = 0x0c,
488 DW_CFA_def_cfa_register = 0x0d,
489 DW_CFA_def_cfa_offset = 0x0e,
490 DW_CFA_def_cfa_expression = 0x0f,
491 DW_CFA_expression = 0x10,
492 DW_CFA_offset_extended_sf = 0x11,
493 DW_CFA_def_cfa_sf = 0x12,
494 DW_CFA_def_cfa_offset_sf = 0x13,
495 DW_CFA_val_offset = 0x14,
496 DW_CFA_val_offset_sf = 0x15,
497 DW_CFA_val_expression = 0x16,
498 };
499
500 enum dwarf_operation
501 {
502 DW_OP_addr = 0x03,
503 DW_OP_deref = 0x06,
504 DW_OP_const1u = 0x08,
505 DW_OP_const1s = 0x09,
506 DW_OP_const2u = 0x0a,
507 DW_OP_const2s = 0x0b,
508 DW_OP_const4u = 0x0c,
509 DW_OP_const4s = 0x0d,
510 DW_OP_const8u = 0x0e,
511 DW_OP_const8s = 0x0f,
512 DW_OP_constu = 0x10,
513 DW_OP_consts = 0x11,
514 DW_OP_dup = 0x12,
515 DW_OP_drop = 0x13,
516 DW_OP_over = 0x14,
517 DW_OP_pick = 0x15,
518 DW_OP_swap = 0x16,
519 DW_OP_rot = 0x17,
520 DW_OP_xderef = 0x18,
521 DW_OP_abs = 0x19,
522 DW_OP_and = 0x1a,
523 DW_OP_div = 0x1b,
524 DW_OP_minus = 0x1c,
525 DW_OP_mod = 0x1d,
526 DW_OP_mul = 0x1e,
527 DW_OP_neg = 0x1f,
528 DW_OP_not = 0x20,
529 DW_OP_or = 0x21,
530 DW_OP_plus = 0x22,
531 DW_OP_plus_uconst = 0x23,
532 DW_OP_shl = 0x24,
533 DW_OP_shr = 0x25,
534 DW_OP_shra = 0x26,
535 DW_OP_xor = 0x27,
536 DW_OP_bra = 0x28,
537 DW_OP_eq = 0x29,
538 DW_OP_ge = 0x2a,
539 DW_OP_gt = 0x2b,
540 DW_OP_le = 0x2c,
541 DW_OP_lt = 0x2d,
542 DW_OP_ne = 0x2e,
543 DW_OP_skip = 0x2f,
544 DW_OP_lit0 = 0x30,
545 DW_OP_lit1 = 0x31,
546 DW_OP_lit2 = 0x32,
547 DW_OP_lit3 = 0x33,
548 DW_OP_lit4 = 0x34,
549 DW_OP_lit5 = 0x35,
550 DW_OP_lit6 = 0x36,
551 DW_OP_lit7 = 0x37,
552 DW_OP_lit8 = 0x38,
553 DW_OP_lit9 = 0x39,
554 DW_OP_lit10 = 0x3a,
555 DW_OP_lit11 = 0x3b,
556 DW_OP_lit12 = 0x3c,
557 DW_OP_lit13 = 0x3d,
558 DW_OP_lit14 = 0x3e,
559 DW_OP_lit15 = 0x3f,
560 DW_OP_lit16 = 0x40,
561 DW_OP_lit17 = 0x41,
562 DW_OP_lit18 = 0x42,
563 DW_OP_lit19 = 0x43,
564 DW_OP_lit20 = 0x44,
565 DW_OP_lit21 = 0x45,
566 DW_OP_lit22 = 0x46,
567 DW_OP_lit23 = 0x47,
568 DW_OP_lit24 = 0x48,
569 DW_OP_lit25 = 0x49,
570 DW_OP_lit26 = 0x4a,
571 DW_OP_lit27 = 0x4b,
572 DW_OP_lit28 = 0x4c,
573 DW_OP_lit29 = 0x4d,
574 DW_OP_lit30 = 0x4e,
575 DW_OP_lit31 = 0x4f,
576 DW_OP_reg0 = 0x50,
577 DW_OP_reg1 = 0x51,
578 DW_OP_reg2 = 0x52,
579 DW_OP_reg3 = 0x53,
580 DW_OP_reg4 = 0x54,
581 DW_OP_reg5 = 0x55,
582 DW_OP_reg6 = 0x56,
583 DW_OP_reg7 = 0x57,
584 DW_OP_reg8 = 0x58,
585 DW_OP_reg9 = 0x59,
586 DW_OP_reg10 = 0x5a,
587 DW_OP_reg11 = 0x5b,
588 DW_OP_reg12 = 0x5c,
589 DW_OP_reg13 = 0x5d,
590 DW_OP_reg14 = 0x5e,
591 DW_OP_reg15 = 0x5f,
592 DW_OP_reg16 = 0x60,
593 DW_OP_reg17 = 0x61,
594 DW_OP_reg18 = 0x62,
595 DW_OP_reg19 = 0x63,
596 DW_OP_reg20 = 0x64,
597 DW_OP_reg21 = 0x65,
598 DW_OP_reg22 = 0x66,
599 DW_OP_reg23 = 0x67,
600 DW_OP_reg24 = 0x68,
601 DW_OP_reg25 = 0x69,
602 DW_OP_reg26 = 0x6a,
603 DW_OP_reg27 = 0x6b,
604 DW_OP_reg28 = 0x6c,
605 DW_OP_reg29 = 0x6d,
606 DW_OP_reg30 = 0x6e,
607 DW_OP_reg31 = 0x6f,
608 DW_OP_breg0 = 0x70,
609 DW_OP_breg1 = 0x71,
610 DW_OP_breg2 = 0x72,
611 DW_OP_breg3 = 0x73,
612 DW_OP_breg4 = 0x74,
613 DW_OP_breg5 = 0x75,
614 DW_OP_breg6 = 0x76,
615 DW_OP_breg7 = 0x77,
616 DW_OP_breg8 = 0x78,
617 DW_OP_breg9 = 0x79,
618 DW_OP_breg10 = 0x7a,
619 DW_OP_breg11 = 0x7b,
620 DW_OP_breg12 = 0x7c,
621 DW_OP_breg13 = 0x7d,
622 DW_OP_breg14 = 0x7e,
623 DW_OP_breg15 = 0x7f,
624 DW_OP_breg16 = 0x80,
625 DW_OP_breg17 = 0x81,
626 DW_OP_breg18 = 0x82,
627 DW_OP_breg19 = 0x83,
628 DW_OP_breg20 = 0x84,
629 DW_OP_breg21 = 0x85,
630 DW_OP_breg22 = 0x86,
631 DW_OP_breg23 = 0x87,
632 DW_OP_breg24 = 0x88,
633 DW_OP_breg25 = 0x89,
634 DW_OP_breg26 = 0x8a,
635 DW_OP_breg27 = 0x8b,
636 DW_OP_breg28 = 0x8c,
637 DW_OP_breg29 = 0x8d,
638 DW_OP_breg30 = 0x8e,
639 DW_OP_breg31 = 0x8f,
640 DW_OP_regx = 0x90,
641 DW_OP_fbreg = 0x91,
642 DW_OP_bregx = 0x92,
643 DW_OP_piece = 0x93,
644 DW_OP_deref_size = 0x94,
645 DW_OP_xderef_size = 0x95,
646 DW_OP_nop = 0x96,
647 DW_OP_push_object_address = 0x97,
648 DW_OP_call2 = 0x98,
649 DW_OP_call4 = 0x99,
650 DW_OP_call_ref = 0x9a,
651 DW_OP_form_tls_address = 0x9b,
652 DW_OP_call_frame_cfa = 0x9c,
653 DW_OP_bit_piece = 0x9d,
654 DW_OP_lo_user = 0xe0,
655 DW_OP_hi_user = 0xff,
656 DW_OP_GNU_push_tls_address = 0xe0,
657 DW_OP_GNU_uninit = 0xf0,
658 DW_OP_GNU_encoded_addr = 0xf1,
659 };
660
661 #define DW_EH_PE_native 0x00
662 #define DW_EH_PE_leb128 0x01
663 #define DW_EH_PE_data2 0x02
664 #define DW_EH_PE_data4 0x03
665 #define DW_EH_PE_data8 0x04
666 #define DW_EH_PE_signed 0x08
667 #define DW_EH_PE_abs 0x00
668 #define DW_EH_PE_pcrel 0x10
669 #define DW_EH_PE_textrel 0x20
670 #define DW_EH_PE_datarel 0x30
671 #define DW_EH_PE_funcrel 0x40
672 #define DW_EH_PE_aligned 0x50
673 #define DW_EH_PE_indirect 0x80
674 #define DW_EH_PE_omit 0xff
675
676 struct dwarf_eh_bases
677 {
678 void *tbase;
679 void *dbase;
680 void *func;
681 };
682
683 struct dwarf_cie
684 {
685 unsigned int length;
686 int id;
687 unsigned char version;
688 unsigned char augmentation[1];
689 };
690
691 struct dwarf_fde
692 {
693 unsigned int length;
694 unsigned int cie_offset;
695 };
696
697 extern const struct dwarf_fde *_Unwind_Find_FDE (void *, struct dwarf_eh_bases *);
698
699 static unsigned char dwarf_get_u1( const unsigned char **p )
700 {
701 return *(*p)++;
702 }
703
704 static unsigned short dwarf_get_u2( const unsigned char **p )
705 {
706 unsigned int ret = (*p)[0] | ((*p)[1] << 8);
707 (*p) += 2;
708 return ret;
709 }
710
711 static unsigned int dwarf_get_u4( const unsigned char **p )
712 {
713 unsigned int ret = (*p)[0] | ((*p)[1] << 8) | ((*p)[2] << 16) | ((*p)[3] << 24);
714 (*p) += 4;
715 return ret;
716 }
717
718 static ULONG64 dwarf_get_u8( const unsigned char **p )
719 {
720 ULONG64 low = dwarf_get_u4( p );
721 ULONG64 high = dwarf_get_u4( p );
722 return low | (high << 32);
723 }
724
725 static ULONG_PTR dwarf_get_uleb128( const unsigned char **p )
726 {
727 ULONG_PTR ret = 0;
728 unsigned int shift = 0;
729 unsigned char byte;
730
731 do
732 {
733 byte = **p;
734 ret |= (ULONG_PTR)(byte & 0x7f) << shift;
735 shift += 7;
736 (*p)++;
737 } while (byte & 0x80);
738 return ret;
739 }
740
741 static LONG_PTR dwarf_get_sleb128( const unsigned char **p )
742 {
743 ULONG_PTR ret = 0;
744 unsigned int shift = 0;
745 unsigned char byte;
746
747 do
748 {
749 byte = **p;
750 ret |= (ULONG_PTR)(byte & 0x7f) << shift;
751 shift += 7;
752 (*p)++;
753 } while (byte & 0x80);
754
755 if ((shift < 8 * sizeof(ret)) && (byte & 0x40)) ret |= -((ULONG_PTR)1 << shift);
756 return ret;
757 }
758
759 static ULONG_PTR dwarf_get_ptr( const unsigned char **p, unsigned char encoding )
760 {
761 ULONG_PTR base;
762
763 if (encoding == DW_EH_PE_omit) return 0;
764
765 switch (encoding & 0xf0)
766 {
767 case DW_EH_PE_abs:
768 base = 0;
769 break;
770 case DW_EH_PE_pcrel:
771 base = (ULONG_PTR)*p;
772 break;
773 default:
774 FIXME( "unsupported encoding %02x\n", encoding );
775 return 0;
776 }
777
778 switch (encoding & 0x0f)
779 {
780 case DW_EH_PE_native:
781 return base + dwarf_get_u8( p );
782 case DW_EH_PE_leb128:
783 return base + dwarf_get_uleb128( p );
784 case DW_EH_PE_data2:
785 return base + dwarf_get_u2( p );
786 case DW_EH_PE_data4:
787 return base + dwarf_get_u4( p );
788 case DW_EH_PE_data8:
789 return base + dwarf_get_u8( p );
790 case DW_EH_PE_signed|DW_EH_PE_leb128:
791 return base + dwarf_get_sleb128( p );
792 case DW_EH_PE_signed|DW_EH_PE_data2:
793 return base + (signed short)dwarf_get_u2( p );
794 case DW_EH_PE_signed|DW_EH_PE_data4:
795 return base + (signed int)dwarf_get_u4( p );
796 case DW_EH_PE_signed|DW_EH_PE_data8:
797 return base + (LONG64)dwarf_get_u8( p );
798 default:
799 FIXME( "unsupported encoding %02x\n", encoding );
800 return 0;
801 }
802 }
803
804 enum reg_rule
805 {
806 RULE_UNSET, /* not set at all */
807 RULE_UNDEFINED, /* undefined value */
808 RULE_SAME, /* same value as previous frame */
809 RULE_CFA_OFFSET, /* stored at cfa offset */
810 RULE_OTHER_REG, /* stored in other register */
811 RULE_EXPRESSION, /* address specified by expression */
812 RULE_VAL_EXPRESSION /* value specified by expression */
813 };
814
815 #define NB_FRAME_REGS 41
816 #define MAX_SAVED_STATES 16
817
818 struct frame_state
819 {
820 ULONG_PTR cfa_offset;
821 unsigned char cfa_reg;
822 enum reg_rule cfa_rule;
823 enum reg_rule rules[NB_FRAME_REGS];
824 ULONG64 regs[NB_FRAME_REGS];
825 };
826
827 struct frame_info
828 {
829 ULONG_PTR ip;
830 ULONG_PTR code_align;
831 LONG_PTR data_align;
832 unsigned char retaddr_reg;
833 unsigned char fde_encoding;
834 unsigned char signal_frame;
835 unsigned char state_sp;
836 struct frame_state state;
837 struct frame_state *state_stack;
838 };
839
840 static const char *dwarf_reg_names[NB_FRAME_REGS] =
841 {
842 /* 0-7 */ "%rax", "%rdx", "%rcx", "%rbx", "%rsi", "%rdi", "%rbp", "%rsp",
843 /* 8-16 */ "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rip",
844 /* 17-24 */ "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",
845 /* 25-32 */ "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15",
846 /* 33-40 */ "%st0", "%st1", "%st2", "%st3", "%st4", "%st5", "%st6", "%st7"
847 };
848
849 static BOOL valid_reg( ULONG_PTR reg )
850 {
851 if (reg >= NB_FRAME_REGS) FIXME( "unsupported reg %lx\n", reg );
852 return (reg < NB_FRAME_REGS);
853 }
854
855 static void execute_cfa_instructions( const unsigned char *ptr, const unsigned char *end,
856 ULONG_PTR last_ip, struct frame_info *info )
857 {
858 while (ptr < end && info->ip < last_ip + info->signal_frame)
859 {
860 enum dwarf_call_frame_info op = *ptr++;
861
862 if (op & 0xc0)
863 {
864 switch (op & 0xc0)
865 {
866 case DW_CFA_advance_loc:
867 {
868 ULONG_PTR offset = (op & 0x3f) * info->code_align;
869 TRACE( "%lx: DW_CFA_advance_loc %lu\n", info->ip, offset );
870 info->ip += offset;
871 break;
872 }
873 case DW_CFA_offset:
874 {
875 ULONG_PTR reg = op & 0x3f;
876 LONG_PTR offset = dwarf_get_uleb128( &ptr ) * info->data_align;
877 if (!valid_reg( reg )) break;
878 TRACE( "%lx: DW_CFA_offset %s, %ld\n", info->ip, dwarf_reg_names[reg], offset );
879 info->state.regs[reg] = offset;
880 info->state.rules[reg] = RULE_CFA_OFFSET;
881 break;
882 }
883 case DW_CFA_restore:
884 {
885 ULONG_PTR reg = op & 0x3f;
886 if (!valid_reg( reg )) break;
887 TRACE( "%lx: DW_CFA_restore %s\n", info->ip, dwarf_reg_names[reg] );
888 info->state.rules[reg] = RULE_UNSET;
889 break;
890 }
891 }
892 }
893 else switch (op)
894 {
895 case DW_CFA_nop:
896 break;
897 case DW_CFA_set_loc:
898 {
899 ULONG_PTR loc = dwarf_get_ptr( &ptr, info->fde_encoding );
900 TRACE( "%lx: DW_CFA_set_loc %lx\n", info->ip, loc );
901 info->ip = loc;
902 break;
903 }
904 case DW_CFA_advance_loc1:
905 {
906 ULONG_PTR offset = *ptr++ * info->code_align;
907 TRACE( "%lx: DW_CFA_advance_loc1 %lu\n", info->ip, offset );
908 info->ip += offset;
909 break;
910 }
911 case DW_CFA_advance_loc2:
912 {
913 ULONG_PTR offset = dwarf_get_u2( &ptr ) * info->code_align;
914 TRACE( "%lx: DW_CFA_advance_loc2 %lu\n", info->ip, offset );
915 info->ip += offset;
916 break;
917 }
918 case DW_CFA_advance_loc4:
919 {
920 ULONG_PTR offset = dwarf_get_u4( &ptr ) * info->code_align;
921 TRACE( "%lx: DW_CFA_advance_loc4 %lu\n", info->ip, offset );
922 info->ip += offset;
923 break;
924 }
925 case DW_CFA_offset_extended:
926 case DW_CFA_offset_extended_sf:
927 {
928 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
929 LONG_PTR offset = (op == DW_CFA_offset_extended) ? dwarf_get_uleb128( &ptr ) * info->data_align
930 : dwarf_get_sleb128( &ptr ) * info->data_align;
931 if (!valid_reg( reg )) break;
932 TRACE( "%lx: DW_CFA_offset_extended %s, %ld\n", info->ip, dwarf_reg_names[reg], offset );
933 info->state.regs[reg] = offset;
934 info->state.rules[reg] = RULE_CFA_OFFSET;
935 break;
936 }
937 case DW_CFA_restore_extended:
938 {
939 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
940 if (!valid_reg( reg )) break;
941 TRACE( "%lx: DW_CFA_restore_extended %s\n", info->ip, dwarf_reg_names[reg] );
942 info->state.rules[reg] = RULE_UNSET;
943 break;
944 }
945 case DW_CFA_undefined:
946 {
947 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
948 if (!valid_reg( reg )) break;
949 TRACE( "%lx: DW_CFA_undefined %s\n", info->ip, dwarf_reg_names[reg] );
950 info->state.rules[reg] = RULE_UNDEFINED;
951 break;
952 }
953 case DW_CFA_same_value:
954 {
955 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
956 if (!valid_reg( reg )) break;
957 TRACE( "%lx: DW_CFA_same_value %s\n", info->ip, dwarf_reg_names[reg] );
958 info->state.regs[reg] = reg;
959 info->state.rules[reg] = RULE_SAME;
960 break;
961 }
962 case DW_CFA_register:
963 {
964 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
965 ULONG_PTR reg2 = dwarf_get_uleb128( &ptr );
966 if (!valid_reg( reg ) || !valid_reg( reg2 )) break;
967 TRACE( "%lx: DW_CFA_register %s == %s\n", info->ip, dwarf_reg_names[reg], dwarf_reg_names[reg2] );
968 info->state.regs[reg] = reg2;
969 info->state.rules[reg] = RULE_OTHER_REG;
970 break;
971 }
972 case DW_CFA_remember_state:
973 TRACE( "%lx: DW_CFA_remember_state\n", info->ip );
974 if (info->state_sp >= MAX_SAVED_STATES)
975 FIXME( "%lx: DW_CFA_remember_state too many nested saves\n", info->ip );
976 else
977 info->state_stack[info->state_sp++] = info->state;
978 break;
979 case DW_CFA_restore_state:
980 TRACE( "%lx: DW_CFA_restore_state\n", info->ip );
981 if (!info->state_sp)
982 FIXME( "%lx: DW_CFA_restore_state without corresponding save\n", info->ip );
983 else
984 info->state = info->state_stack[--info->state_sp];
985 break;
986 case DW_CFA_def_cfa:
987 case DW_CFA_def_cfa_sf:
988 {
989 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
990 ULONG_PTR offset = (op == DW_CFA_def_cfa) ? dwarf_get_uleb128( &ptr )
991 : dwarf_get_sleb128( &ptr ) * info->data_align;
992 if (!valid_reg( reg )) break;
993 TRACE( "%lx: DW_CFA_def_cfa %s, %lu\n", info->ip, dwarf_reg_names[reg], offset );
994 info->state.cfa_reg = reg;
995 info->state.cfa_offset = offset;
996 info->state.cfa_rule = RULE_CFA_OFFSET;
997 break;
998 }
999 case DW_CFA_def_cfa_register:
1000 {
1001 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1002 if (!valid_reg( reg )) break;
1003 TRACE( "%lx: DW_CFA_def_cfa_register %s\n", info->ip, dwarf_reg_names[reg] );
1004 info->state.cfa_reg = reg;
1005 info->state.cfa_rule = RULE_CFA_OFFSET;
1006 break;
1007 }
1008 case DW_CFA_def_cfa_offset:
1009 case DW_CFA_def_cfa_offset_sf:
1010 {
1011 ULONG_PTR offset = (op == DW_CFA_def_cfa_offset) ? dwarf_get_uleb128( &ptr )
1012 : dwarf_get_sleb128( &ptr ) * info->data_align;
1013 TRACE( "%lx: DW_CFA_def_cfa_offset %lu\n", info->ip, offset );
1014 info->state.cfa_offset = offset;
1015 info->state.cfa_rule = RULE_CFA_OFFSET;
1016 break;
1017 }
1018 case DW_CFA_def_cfa_expression:
1019 {
1020 ULONG_PTR expr = (ULONG_PTR)ptr;
1021 ULONG_PTR len = dwarf_get_uleb128( &ptr );
1022 TRACE( "%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info->ip, expr, expr+len );
1023 info->state.cfa_offset = expr;
1024 info->state.cfa_rule = RULE_VAL_EXPRESSION;
1025 ptr += len;
1026 break;
1027 }
1028 case DW_CFA_expression:
1029 case DW_CFA_val_expression:
1030 {
1031 ULONG_PTR reg = dwarf_get_uleb128( &ptr );
1032 ULONG_PTR expr = (ULONG_PTR)ptr;
1033 ULONG_PTR len = dwarf_get_uleb128( &ptr );
1034 if (!valid_reg( reg )) break;
1035 TRACE( "%lx: DW_CFA_%sexpression %s %lx-%lx\n",
1036 info->ip, (op == DW_CFA_expression) ? "" : "val_", dwarf_reg_names[reg], expr, expr+len );
1037 info->state.regs[reg] = expr;
1038 info->state.rules[reg] = (op == DW_CFA_expression) ? RULE_EXPRESSION : RULE_VAL_EXPRESSION;
1039 ptr += len;
1040 break;
1041 }
1042 default:
1043 FIXME( "%lx: unknown CFA opcode %02x\n", info->ip, op );
1044 break;
1045 }
1046 }
1047 }
1048
1049 /* retrieve a context register from its dwarf number */
1050 static void *get_context_reg( CONTEXT *context, ULONG_PTR dw_reg )
1051 {
1052 switch (dw_reg)
1053 {
1054 case 0: return &context->Rax;
1055 case 1: return &context->Rdx;
1056 case 2: return &context->Rcx;
1057 case 3: return &context->Rbx;
1058 case 4: return &context->Rsi;
1059 case 5: return &context->Rdi;
1060 case 6: return &context->Rbp;
1061 case 7: return &context->Rsp;
1062 case 8: return &context->R8;
1063 case 9: return &context->R9;
1064 case 10: return &context->R10;
1065 case 11: return &context->R11;
1066 case 12: return &context->R12;
1067 case 13: return &context->R13;
1068 case 14: return &context->R14;
1069 case 15: return &context->R15;
1070 case 16: return &context->Rip;
1071 case 17: return &context->u.s.Xmm0;
1072 case 18: return &context->u.s.Xmm1;
1073 case 19: return &context->u.s.Xmm2;
1074 case 20: return &context->u.s.Xmm3;
1075 case 21: return &context->u.s.Xmm4;
1076 case 22: return &context->u.s.Xmm5;
1077 case 23: return &context->u.s.Xmm6;
1078 case 24: return &context->u.s.Xmm7;
1079 case 25: return &context->u.s.Xmm8;
1080 case 26: return &context->u.s.Xmm9;
1081 case 27: return &context->u.s.Xmm10;
1082 case 28: return &context->u.s.Xmm11;
1083 case 29: return &context->u.s.Xmm12;
1084 case 30: return &context->u.s.Xmm13;
1085 case 31: return &context->u.s.Xmm14;
1086 case 32: return &context->u.s.Xmm15;
1087 case 33: return &context->u.s.Legacy[0];
1088 case 34: return &context->u.s.Legacy[1];
1089 case 35: return &context->u.s.Legacy[2];
1090 case 36: return &context->u.s.Legacy[3];
1091 case 37: return &context->u.s.Legacy[4];
1092 case 38: return &context->u.s.Legacy[5];
1093 case 39: return &context->u.s.Legacy[6];
1094 case 40: return &context->u.s.Legacy[7];
1095 default: return NULL;
1096 }
1097 }
1098
1099 /* set a context register from its dwarf number */
1100 static void set_context_reg( CONTEXT *context, ULONG_PTR dw_reg, void *val )
1101 {
1102 switch (dw_reg)
1103 {
1104 case 0: context->Rax = *(ULONG64 *)val; break;
1105 case 1: context->Rdx = *(ULONG64 *)val; break;
1106 case 2: context->Rcx = *(ULONG64 *)val; break;
1107 case 3: context->Rbx = *(ULONG64 *)val; break;
1108 case 4: context->Rsi = *(ULONG64 *)val; break;
1109 case 5: context->Rdi = *(ULONG64 *)val; break;
1110 case 6: context->Rbp = *(ULONG64 *)val; break;
1111 case 7: context->Rsp = *(ULONG64 *)val; break;
1112 case 8: context->R8 = *(ULONG64 *)val; break;
1113 case 9: context->R9 = *(ULONG64 *)val; break;
1114 case 10: context->R10 = *(ULONG64 *)val; break;
1115 case 11: context->R11 = *(ULONG64 *)val; break;
1116 case 12: context->R12 = *(ULONG64 *)val; break;
1117 case 13: context->R13 = *(ULONG64 *)val; break;
1118 case 14: context->R14 = *(ULONG64 *)val; break;
1119 case 15: context->R15 = *(ULONG64 *)val; break;
1120 case 16: context->Rip = *(ULONG64 *)val; break;
1121 case 17: context->u.s.Xmm0 = *(M128A *)val; break;
1122 case 18: context->u.s.Xmm1 = *(M128A *)val; break;
1123 case 19: context->u.s.Xmm2 = *(M128A *)val; break;
1124 case 20: context->u.s.Xmm3 = *(M128A *)val; break;
1125 case 21: context->u.s.Xmm4 = *(M128A *)val; break;
1126 case 22: context->u.s.Xmm5 = *(M128A *)val; break;
1127 case 23: context->u.s.Xmm6 = *(M128A *)val; break;
1128 case 24: context->u.s.Xmm7 = *(M128A *)val; break;
1129 case 25: context->u.s.Xmm8 = *(M128A *)val; break;
1130 case 26: context->u.s.Xmm9 = *(M128A *)val; break;
1131 case 27: context->u.s.Xmm10 = *(M128A *)val; break;
1132 case 28: context->u.s.Xmm11 = *(M128A *)val; break;
1133 case 29: context->u.s.Xmm12 = *(M128A *)val; break;
1134 case 30: context->u.s.Xmm13 = *(M128A *)val; break;
1135 case 31: context->u.s.Xmm14 = *(M128A *)val; break;
1136 case 32: context->u.s.Xmm15 = *(M128A *)val; break;
1137 case 33: context->u.s.Legacy[0] = *(M128A *)val; break;
1138 case 34: context->u.s.Legacy[1] = *(M128A *)val; break;
1139 case 35: context->u.s.Legacy[2] = *(M128A *)val; break;
1140 case 36: context->u.s.Legacy[3] = *(M128A *)val; break;
1141 case 37: context->u.s.Legacy[4] = *(M128A *)val; break;
1142 case 38: context->u.s.Legacy[5] = *(M128A *)val; break;
1143 case 39: context->u.s.Legacy[6] = *(M128A *)val; break;
1144 case 40: context->u.s.Legacy[7] = *(M128A *)val; break;
1145 }
1146 }
1147
1148 static ULONG_PTR eval_expression( const unsigned char *p, CONTEXT *context )
1149 {
1150 ULONG_PTR reg, tmp, stack[64];
1151 int sp = -1;
1152 ULONG_PTR len = dwarf_get_uleb128(&p);
1153 const unsigned char *end = p + len;
1154
1155 while (p < end)
1156 {
1157 unsigned char opcode = dwarf_get_u1(&p);
1158
1159 if (opcode >= DW_OP_lit0 && opcode <= DW_OP_lit31)
1160 stack[++sp] = opcode - DW_OP_lit0;
1161 else if (opcode >= DW_OP_reg0 && opcode <= DW_OP_reg31)
1162 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, opcode - DW_OP_reg0 );
1163 else if (opcode >= DW_OP_breg0 && opcode <= DW_OP_breg31)
1164 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, opcode - DW_OP_breg0 ) + dwarf_get_sleb128(&p);
1165 else switch (opcode)
1166 {
1167 case DW_OP_nop: break;
1168 case DW_OP_addr: stack[++sp] = dwarf_get_u8(&p); break;
1169 case DW_OP_const1u: stack[++sp] = dwarf_get_u1(&p); break;
1170 case DW_OP_const1s: stack[++sp] = (signed char)dwarf_get_u1(&p); break;
1171 case DW_OP_const2u: stack[++sp] = dwarf_get_u2(&p); break;
1172 case DW_OP_const2s: stack[++sp] = (short)dwarf_get_u2(&p); break;
1173 case DW_OP_const4u: stack[++sp] = dwarf_get_u4(&p); break;
1174 case DW_OP_const4s: stack[++sp] = (signed int)dwarf_get_u4(&p); break;
1175 case DW_OP_const8u: stack[++sp] = dwarf_get_u8(&p); break;
1176 case DW_OP_const8s: stack[++sp] = (LONG_PTR)dwarf_get_u8(&p); break;
1177 case DW_OP_constu: stack[++sp] = dwarf_get_uleb128(&p); break;
1178 case DW_OP_consts: stack[++sp] = dwarf_get_sleb128(&p); break;
1179 case DW_OP_deref: stack[sp] = *(ULONG_PTR *)stack[sp]; break;
1180 case DW_OP_dup: stack[sp + 1] = stack[sp]; sp++; break;
1181 case DW_OP_drop: sp--; break;
1182 case DW_OP_over: stack[sp + 1] = stack[sp - 1]; sp++; break;
1183 case DW_OP_pick: stack[sp + 1] = stack[sp - dwarf_get_u1(&p)]; sp++; break;
1184 case DW_OP_swap: tmp = stack[sp]; stack[sp] = stack[sp-1]; stack[sp-1] = tmp; break;
1185 case DW_OP_rot: tmp = stack[sp]; stack[sp] = stack[sp-1]; stack[sp-1] = stack[sp-2]; stack[sp-2] = tmp; break;
1186 case DW_OP_abs: stack[sp] = labs(stack[sp]); break;
1187 case DW_OP_neg: stack[sp] = -stack[sp]; break;
1188 case DW_OP_not: stack[sp] = ~stack[sp]; break;
1189 case DW_OP_and: stack[sp-1] &= stack[sp]; sp--; break;
1190 case DW_OP_or: stack[sp-1] |= stack[sp]; sp--; break;
1191 case DW_OP_minus: stack[sp-1] -= stack[sp]; sp--; break;
1192 case DW_OP_mul: stack[sp-1] *= stack[sp]; sp--; break;
1193 case DW_OP_plus: stack[sp-1] += stack[sp]; sp--; break;
1194 case DW_OP_xor: stack[sp-1] ^= stack[sp]; sp--; break;
1195 case DW_OP_shl: stack[sp-1] <<= stack[sp]; sp--; break;
1196 case DW_OP_shr: stack[sp-1] >>= stack[sp]; sp--; break;
1197 case DW_OP_plus_uconst: stack[sp] += dwarf_get_uleb128(&p); break;
1198 case DW_OP_shra: stack[sp-1] = (LONG_PTR)stack[sp-1] / (1 << stack[sp]); sp--; break;
1199 case DW_OP_div: stack[sp-1] = (LONG_PTR)stack[sp-1] / (LONG_PTR)stack[sp]; sp--; break;
1200 case DW_OP_mod: stack[sp-1] = (LONG_PTR)stack[sp-1] % (LONG_PTR)stack[sp]; sp--; break;
1201 case DW_OP_ge: stack[sp-1] = ((LONG_PTR)stack[sp-1] >= (LONG_PTR)stack[sp]); sp--; break;
1202 case DW_OP_gt: stack[sp-1] = ((LONG_PTR)stack[sp-1] > (LONG_PTR)stack[sp]); sp--; break;
1203 case DW_OP_le: stack[sp-1] = ((LONG_PTR)stack[sp-1] <= (LONG_PTR)stack[sp]); sp--; break;
1204 case DW_OP_lt: stack[sp-1] = ((LONG_PTR)stack[sp-1] < (LONG_PTR)stack[sp]); sp--; break;
1205 case DW_OP_eq: stack[sp-1] = (stack[sp-1] == stack[sp]); sp--; break;
1206 case DW_OP_ne: stack[sp-1] = (stack[sp-1] != stack[sp]); sp--; break;
1207 case DW_OP_skip: tmp = (short)dwarf_get_u2(&p); p += tmp; break;
1208 case DW_OP_bra: tmp = (short)dwarf_get_u2(&p); if (!stack[sp--]) p += tmp; break;
1209 case DW_OP_GNU_encoded_addr: tmp = *p++; stack[++sp] = dwarf_get_ptr( &p, tmp ); break;
1210 case DW_OP_regx: stack[++sp] = *(ULONG_PTR *)get_context_reg( context, dwarf_get_uleb128(&p) ); break;
1211 case DW_OP_bregx:
1212 reg = dwarf_get_uleb128(&p);
1213 tmp = dwarf_get_sleb128(&p);
1214 stack[++sp] = *(ULONG_PTR *)get_context_reg( context, reg ) + tmp;
1215 break;
1216 case DW_OP_deref_size:
1217 switch (*p++)
1218 {
1219 case 1: stack[sp] = *(unsigned char *)stack[sp]; break;
1220 case 2: stack[sp] = *(unsigned short *)stack[sp]; break;
1221 case 4: stack[sp] = *(unsigned int *)stack[sp]; break;
1222 case 8: stack[sp] = *(ULONG_PTR *)stack[sp]; break;
1223 }
1224 break;
1225 default:
1226 FIXME( "unhandled opcode %02x\n", opcode );
1227 }
1228 }
1229 return stack[sp];
1230 }
1231
1232 /* apply the computed frame info to the actual context */
1233 static void apply_frame_state( CONTEXT *context, struct frame_state *state )
1234 {
1235 unsigned int i;
1236 ULONG_PTR cfa, value;
1237 CONTEXT new_context = *context;
1238
1239 switch (state->cfa_rule)
1240 {
1241 case RULE_EXPRESSION:
1242 cfa = *(ULONG_PTR *)eval_expression( (const unsigned char *)state->cfa_offset, context );
1243 break;
1244 case RULE_VAL_EXPRESSION:
1245 cfa = eval_expression( (const unsigned char *)state->cfa_offset, context );
1246 break;
1247 default:
1248 cfa = *(ULONG_PTR *)get_context_reg( context, state->cfa_reg ) + state->cfa_offset;
1249 break;
1250 }
1251 if (!cfa) return;
1252
1253 for (i = 0; i < NB_FRAME_REGS; i++)
1254 {
1255 switch (state->rules[i])
1256 {
1257 case RULE_UNSET:
1258 case RULE_UNDEFINED:
1259 case RULE_SAME:
1260 break;
1261 case RULE_CFA_OFFSET:
1262 set_context_reg( &new_context, i, (char *)cfa + state->regs[i] );
1263 break;
1264 case RULE_OTHER_REG:
1265 set_context_reg( &new_context, i, get_context_reg( context, state->regs[i] ));
1266 break;
1267 case RULE_EXPRESSION:
1268 value = eval_expression( (const unsigned char *)state->regs[i], context );
1269 set_context_reg( &new_context, i, (void *)value );
1270 break;
1271 case RULE_VAL_EXPRESSION:
1272 value = eval_expression( (const unsigned char *)state->regs[i], context );
1273 set_context_reg( &new_context, i, &value );
1274 break;
1275 }
1276 }
1277 new_context.Rsp = cfa;
1278 *context = new_context;
1279 }
1280
1281
1282 /***********************************************************************
1283 * dwarf_virtual_unwind
1284 *
1285 * Equivalent of RtlVirtualUnwind for builtin modules.
1286 */
1287 static NTSTATUS dwarf_virtual_unwind( ULONG64 ip, ULONG64 *frame,CONTEXT *context,
1288 const struct dwarf_fde *fde, const struct dwarf_eh_bases *bases,
1289 PEXCEPTION_ROUTINE *handler, void **handler_data )
1290 {
1291 const struct dwarf_cie *cie;
1292 const unsigned char *ptr, *augmentation, *end;
1293 ULONG_PTR len, code_end;
1294 struct frame_info info;
1295 struct frame_state state_stack[MAX_SAVED_STATES];
1296 int aug_z_format = 0;
1297 unsigned char lsda_encoding = DW_EH_PE_omit;
1298
1299 memset( &info, 0, sizeof(info) );
1300 info.state_stack = state_stack;
1301 info.ip = (ULONG_PTR)bases->func;
1302 *handler = NULL;
1303
1304 cie = (const struct dwarf_cie *)((const char *)&fde->cie_offset - fde->cie_offset);
1305
1306 /* parse the CIE first */
1307
1308 if (cie->version != 1)
1309 {
1310 FIXME( "unknown CIE version %u at %p\n", cie->version, cie );
1311 return STATUS_INVALID_DISPOSITION;
1312 }
1313 ptr = cie->augmentation + strlen((const char *)cie->augmentation) + 1;
1314
1315 info.code_align = dwarf_get_uleb128( &ptr );
1316 info.data_align = dwarf_get_sleb128( &ptr );
1317 info.retaddr_reg = *ptr++;
1318 info.state.cfa_rule = RULE_CFA_OFFSET;
1319
1320 TRACE( "function %lx base %p cie %p len %x id %x version %x aug '%s' code_align %lu data_align %ld retaddr %s\n",
1321 ip, bases->func, cie, cie->length, cie->id, cie->version, cie->augmentation,
1322 info.code_align, info.data_align, dwarf_reg_names[info.retaddr_reg] );
1323
1324 end = NULL;
1325 for (augmentation = cie->augmentation; *augmentation; augmentation++)
1326 {
1327 switch (*augmentation)
1328 {
1329 case 'z':
1330 len = dwarf_get_uleb128( &ptr );
1331 end = ptr + len;
1332 aug_z_format = 1;
1333 continue;
1334 case 'L':
1335 lsda_encoding = *ptr++;
1336 continue;
1337 case 'P':
1338 {
1339 unsigned char encoding = *ptr++;
1340 *handler = (void *)dwarf_get_ptr( &ptr, encoding );
1341 continue;
1342 }
1343 case 'R':
1344 info.fde_encoding = *ptr++;
1345 continue;
1346 case 'S':
1347 info.signal_frame = 1;
1348 continue;
1349 }
1350 FIXME( "unknown augmentation '%c'\n", *augmentation );
1351 if (!end) return STATUS_INVALID_DISPOSITION; /* cannot continue */
1352 break;
1353 }
1354 if (end) ptr = end;
1355
1356 end = (const unsigned char *)(&cie->length + 1) + cie->length;
1357 execute_cfa_instructions( ptr, end, ip, &info );
1358
1359 ptr = (const unsigned char *)(fde + 1);
1360 info.ip = dwarf_get_ptr( &ptr, info.fde_encoding ); /* fde code start */
1361 code_end = info.ip + dwarf_get_ptr( &ptr, info.fde_encoding & 0x0f ); /* fde code length */
1362
1363 if (aug_z_format) /* get length of augmentation data */
1364 {
1365 len = dwarf_get_uleb128( &ptr );
1366 end = ptr + len;
1367 }
1368 else end = NULL;
1369
1370 *handler_data = (void *)dwarf_get_ptr( &ptr, lsda_encoding );
1371 if (end) ptr = end;
1372
1373 end = (const unsigned char *)(&fde->length + 1) + fde->length;
1374 TRACE( "fde %p len %x personality %p lsda %p code %lx-%lx\n",
1375 fde, fde->length, *handler, *handler_data, info.ip, code_end );
1376 execute_cfa_instructions( ptr, end, ip, &info );
1377 apply_frame_state( context, &info.state );
1378 *frame = context->Rsp;
1379
1380 TRACE( "next function rip=%016lx\n", context->Rip );
1381 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1382 context->Rax, context->Rbx, context->Rcx, context->Rdx );
1383 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1384 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
1385 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1386 context->R8, context->R9, context->R10, context->R11 );
1387 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1388 context->R12, context->R13, context->R14, context->R15 );
1389
1390 return STATUS_SUCCESS;
1391 }
1392
1393
1394 /***********************************************************************
1395 * dispatch_signal
1396 */
1397 static inline int dispatch_signal(unsigned int sig)
1398 {
1399 if (handlers[sig] == NULL) return 0;
1400 return handlers[sig](sig);
1401 }
1402
1403 /***********************************************************************
1404 * get_signal_stack
1405 *
1406 * Get the base of the signal stack for the current thread.
1407 */
1408 static inline void *get_signal_stack(void)
1409 {
1410 return (char *)NtCurrentTeb() + teb_size;
1411 }
1412
1413 /***********************************************************************
1414 * is_inside_signal_stack
1415 *
1416 * Check if pointer is inside the signal stack.
1417 */
1418 static inline BOOL is_inside_signal_stack( void *ptr )
1419 {
1420 return ((char *)ptr >= (char *)get_signal_stack() &&
1421 (char *)ptr < (char *)get_signal_stack() + signal_stack_size);
1422 }
1423
1424 /***********************************************************************
1425 * save_context
1426 *
1427 * Set the register values from a sigcontext.
1428 */
1429 static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
1430 {
1431 context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS;
1432 context->Rax = RAX_sig(sigcontext);
1433 context->Rcx = RCX_sig(sigcontext);
1434 context->Rdx = RDX_sig(sigcontext);
1435 context->Rbx = RBX_sig(sigcontext);
1436 context->Rsp = RSP_sig(sigcontext);
1437 context->Rbp = RBP_sig(sigcontext);
1438 context->Rsi = RSI_sig(sigcontext);
1439 context->Rdi = RDI_sig(sigcontext);
1440 context->R8 = R8_sig(sigcontext);
1441 context->R9 = R9_sig(sigcontext);
1442 context->R10 = R10_sig(sigcontext);
1443 context->R11 = R11_sig(sigcontext);
1444 context->R12 = R12_sig(sigcontext);
1445 context->R13 = R13_sig(sigcontext);
1446 context->R14 = R14_sig(sigcontext);
1447 context->R15 = R15_sig(sigcontext);
1448 context->Rip = RIP_sig(sigcontext);
1449 context->SegCs = CS_sig(sigcontext);
1450 context->SegFs = FS_sig(sigcontext);
1451 context->SegGs = GS_sig(sigcontext);
1452 context->EFlags = EFL_sig(sigcontext);
1453 #ifdef DS_sig
1454 context->SegDs = DS_sig(sigcontext);
1455 #else
1456 __asm__("movw %%ds,%0" : "=m" (context->SegDs));
1457 #endif
1458 #ifdef ES_sig
1459 context->SegEs = ES_sig(sigcontext);
1460 #else
1461 __asm__("movw %%es,%0" : "=m" (context->SegEs));
1462 #endif
1463 #ifdef SS_sig
1464 context->SegSs = SS_sig(sigcontext);
1465 #else
1466 __asm__("movw %%ss,%0" : "=m" (context->SegSs));
1467 #endif
1468 if (FPU_sig(sigcontext))
1469 {
1470 context->ContextFlags |= CONTEXT_FLOATING_POINT;
1471 context->u.FltSave = *FPU_sig(sigcontext);
1472 context->MxCsr = context->u.FltSave.MxCsr;
1473 }
1474 }
1475
1476
1477 /***********************************************************************
1478 * restore_context
1479 *
1480 * Build a sigcontext from the register values.
1481 */
1482 static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
1483 {
1484 RAX_sig(sigcontext) = context->Rax;
1485 RCX_sig(sigcontext) = context->Rcx;
1486 RDX_sig(sigcontext) = context->Rdx;
1487 RBX_sig(sigcontext) = context->Rbx;
1488 RSP_sig(sigcontext) = context->Rsp;
1489 RBP_sig(sigcontext) = context->Rbp;
1490 RSI_sig(sigcontext) = context->Rsi;
1491 RDI_sig(sigcontext) = context->Rdi;
1492 R8_sig(sigcontext) = context->R8;
1493 R9_sig(sigcontext) = context->R9;
1494 R10_sig(sigcontext) = context->R10;
1495 R11_sig(sigcontext) = context->R11;
1496 R12_sig(sigcontext) = context->R12;
1497 R13_sig(sigcontext) = context->R13;
1498 R14_sig(sigcontext) = context->R14;
1499 R15_sig(sigcontext) = context->R15;
1500 RIP_sig(sigcontext) = context->Rip;
1501 CS_sig(sigcontext) = context->SegCs;
1502 FS_sig(sigcontext) = context->SegFs;
1503 GS_sig(sigcontext) = context->SegGs;
1504 EFL_sig(sigcontext) = context->EFlags;
1505 #ifdef DS_sig
1506 DS_sig(sigcontext) = context->SegDs;
1507 #endif
1508 #ifdef ES_sig
1509 ES_sig(sigcontext) = context->SegEs;
1510 #endif
1511 #ifdef SS_sig
1512 SS_sig(sigcontext) = context->SegSs;
1513 #endif
1514 if (FPU_sig(sigcontext)) *FPU_sig(sigcontext) = context->u.FltSave;
1515 }
1516
1517
1518 /**************************************************************************
1519 * __chkstk (NTDLL.@)
1520 *
1521 * Supposed to touch all the stack pages, but we shouldn't need that.
1522 */
1523 __ASM_GLOBAL_FUNC( __chkstk, "ret" );
1524
1525
1526 /***********************************************************************
1527 * RtlCaptureContext (NTDLL.@)
1528 */
1529 __ASM_GLOBAL_FUNC( RtlCaptureContext,
1530 "pushfq\n\t"
1531 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
1532 "movl $0x001000f,0x30(%rcx)\n\t" /* context->ContextFlags */
1533 "stmxcsr 0x34(%rcx)\n\t" /* context->MxCsr */
1534 "movw %cs,0x38(%rcx)\n\t" /* context->SegCs */
1535 "movw %ds,0x3a(%rcx)\n\t" /* context->SegDs */
1536 "movw %es,0x3c(%rcx)\n\t" /* context->SegEs */
1537 "movw %fs,0x3e(%rcx)\n\t" /* context->SegFs */
1538 "movw %gs,0x40(%rcx)\n\t" /* context->SegGs */
1539 "movw %ss,0x42(%rcx)\n\t" /* context->SegSs */
1540 "popq 0x44(%rcx)\n\t" /* context->Eflags */
1541 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
1542 "movq %rax,0x78(%rcx)\n\t" /* context->Rax */
1543 "movq %rcx,0x80(%rcx)\n\t" /* context->Rcx */
1544 "movq %rdx,0x88(%rcx)\n\t" /* context->Rdx */
1545 "movq %rbx,0x90(%rcx)\n\t" /* context->Rbx */
1546 "leaq 8(%rsp),%rax\n\t"
1547 "movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
1548 "movq %rbp,0xa0(%rcx)\n\t" /* context->Rbp */
1549 "movq %rsi,0xa8(%rcx)\n\t" /* context->Rsi */
1550 "movq %rdi,0xb0(%rcx)\n\t" /* context->Rdi */
1551 "movq %r8,0xb8(%rcx)\n\t" /* context->R8 */
1552 "movq %r9,0xc0(%rcx)\n\t" /* context->R9 */
1553 "movq %r10,0xc8(%rcx)\n\t" /* context->R10 */
1554 "movq %r11,0xd0(%rcx)\n\t" /* context->R11 */
1555 "movq %r12,0xd8(%rcx)\n\t" /* context->R12 */
1556 "movq %r13,0xe0(%rcx)\n\t" /* context->R13 */
1557 "movq %r14,0xe8(%rcx)\n\t" /* context->R14 */
1558 "movq %r15,0xf0(%rcx)\n\t" /* context->R15 */
1559 "movq (%rsp),%rax\n\t"
1560 "movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
1561 "fxsave 0x100(%rcx)\n\t" /* context->FtlSave */
1562 "movdqa %xmm0,0x1a0(%rcx)\n\t" /* context->Xmm0 */
1563 "movdqa %xmm1,0x1b0(%rcx)\n\t" /* context->Xmm1 */
1564 "movdqa %xmm2,0x1c0(%rcx)\n\t" /* context->Xmm2 */
1565 "movdqa %xmm3,0x1d0(%rcx)\n\t" /* context->Xmm3 */
1566 "movdqa %xmm4,0x1e0(%rcx)\n\t" /* context->Xmm4 */
1567 "movdqa %xmm5,0x1f0(%rcx)\n\t" /* context->Xmm5 */
1568 "movdqa %xmm6,0x200(%rcx)\n\t" /* context->Xmm6 */
1569 "movdqa %xmm7,0x210(%rcx)\n\t" /* context->Xmm7 */
1570 "movdqa %xmm8,0x220(%rcx)\n\t" /* context->Xmm8 */
1571 "movdqa %xmm9,0x230(%rcx)\n\t" /* context->Xmm9 */
1572 "movdqa %xmm10,0x240(%rcx)\n\t" /* context->Xmm10 */
1573 "movdqa %xmm11,0x250(%rcx)\n\t" /* context->Xmm11 */
1574 "movdqa %xmm12,0x260(%rcx)\n\t" /* context->Xmm12 */
1575 "movdqa %xmm13,0x270(%rcx)\n\t" /* context->Xmm13 */
1576 "movdqa %xmm14,0x280(%rcx)\n\t" /* context->Xmm14 */
1577 "movdqa %xmm15,0x290(%rcx)\n\t" /* context->Xmm15 */
1578 "ret" );
1579
1580 /***********************************************************************
1581 * set_cpu_context
1582 *
1583 * Set the new CPU context.
1584 */
1585 __ASM_GLOBAL_FUNC( set_cpu_context,
1586 "subq $40,%rsp\n\t"
1587 __ASM_CFI(".cfi_adjust_cfa_offset 40\n\t")
1588 "ldmxcsr 0x34(%rdi)\n\t" /* context->MxCsr */
1589 "movw 0x38(%rdi),%ax\n\t" /* context->SegCs */
1590 "movq %rax,8(%rsp)\n\t"
1591 "movw 0x42(%rdi),%ax\n\t" /* context->SegSs */
1592 "movq %rax,32(%rsp)\n\t"
1593 "movq 0x44(%rdi),%rax\n\t" /* context->Eflags */
1594 "movq %rax,16(%rsp)\n\t"
1595 "movq 0x80(%rdi),%rcx\n\t" /* context->Rcx */
1596 "movq 0x88(%rdi),%rdx\n\t" /* context->Rdx */
1597 "movq 0x90(%rdi),%rbx\n\t" /* context->Rbx */
1598 "movq 0x98(%rdi),%rax\n\t" /* context->Rsp */
1599 "movq %rax,24(%rsp)\n\t"
1600 "movq 0xa0(%rdi),%rbp\n\t" /* context->Rbp */
1601 "movq 0xa8(%rdi),%rsi\n\t" /* context->Rsi */
1602 "movq 0xb8(%rdi),%r8\n\t" /* context->R8 */
1603 "movq 0xc0(%rdi),%r9\n\t" /* context->R9 */
1604 "movq 0xc8(%rdi),%r10\n\t" /* context->R10 */
1605 "movq 0xd0(%rdi),%r11\n\t" /* context->R11 */
1606 "movq 0xd8(%rdi),%r12\n\t" /* context->R12 */
1607 "movq 0xe0(%rdi),%r13\n\t" /* context->R13 */
1608 "movq 0xe8(%rdi),%r14\n\t" /* context->R14 */
1609 "movq 0xf0(%rdi),%r15\n\t" /* context->R15 */
1610 "movq 0xf8(%rdi),%rax\n\t" /* context->Rip */
1611 "movq %rax,(%rsp)\n\t"
1612 "fxrstor 0x100(%rdi)\n\t" /* context->FtlSave */
1613 "movdqa 0x1a0(%rdi),%xmm0\n\t" /* context->Xmm0 */
1614 "movdqa 0x1b0(%rdi),%xmm1\n\t" /* context->Xmm1 */
1615 "movdqa 0x1c0(%rdi),%xmm2\n\t" /* context->Xmm2 */
1616 "movdqa 0x1d0(%rdi),%xmm3\n\t" /* context->Xmm3 */
1617 "movdqa 0x1e0(%rdi),%xmm4\n\t" /* context->Xmm4 */
1618 "movdqa 0x1f0(%rdi),%xmm5\n\t" /* context->Xmm5 */
1619 "movdqa 0x200(%rdi),%xmm6\n\t" /* context->Xmm6 */
1620 "movdqa 0x210(%rdi),%xmm7\n\t" /* context->Xmm7 */
1621 "movdqa 0x220(%rdi),%xmm8\n\t" /* context->Xmm8 */
1622 "movdqa 0x230(%rdi),%xmm9\n\t" /* context->Xmm9 */
1623 "movdqa 0x240(%rdi),%xmm10\n\t" /* context->Xmm10 */
1624 "movdqa 0x250(%rdi),%xmm11\n\t" /* context->Xmm11 */
1625 "movdqa 0x260(%rdi),%xmm12\n\t" /* context->Xmm12 */
1626 "movdqa 0x270(%rdi),%xmm13\n\t" /* context->Xmm13 */
1627 "movdqa 0x280(%rdi),%xmm14\n\t" /* context->Xmm14 */
1628 "movdqa 0x290(%rdi),%xmm15\n\t" /* context->Xmm15 */
1629 "movq 0x78(%rdi),%rax\n\t" /* context->Rax */
1630 "movq 0xb0(%rdi),%rdi\n\t" /* context->Rdi */
1631 "iretq" );
1632
1633 /***********************************************************************
1634 * copy_context
1635 *
1636 * Copy a register context according to the flags.
1637 */
1638 void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
1639 {
1640 flags &= ~CONTEXT_AMD64; /* get rid of CPU id */
1641 if (flags & CONTEXT_CONTROL)
1642 {
1643 to->Rbp = from->Rbp;
1644 to->Rip = from->Rip;
1645 to->Rsp = from->Rsp;
1646 to->SegCs = from->SegCs;
1647 to->SegSs = from->SegSs;
1648 to->EFlags = from->EFlags;
1649 }
1650 if (flags & CONTEXT_INTEGER)
1651 {
1652 to->Rax = from->Rax;
1653 to->Rcx = from->Rcx;
1654 to->Rdx = from->Rdx;
1655 to->Rbx = from->Rbx;
1656 to->Rsi = from->Rsi;
1657 to->Rdi = from->Rdi;
1658 to->R8 = from->R8;
1659 to->R9 = from->R9;
1660 to->R10 = from->R10;
1661 to->R11 = from->R11;
1662 to->R12 = from->R12;
1663 to->R13 = from->R13;
1664 to->R14 = from->R14;
1665 to->R15 = from->R15;
1666 }
1667 if (flags & CONTEXT_SEGMENTS)
1668 {
1669 to->SegDs = from->SegDs;
1670 to->SegEs = from->SegEs;
1671 to->SegFs = from->SegFs;
1672 to->SegGs = from->SegGs;
1673 }
1674 if (flags & CONTEXT_FLOATING_POINT)
1675 {
1676 to->MxCsr = from->MxCsr;
1677 to->u.FltSave = from->u.FltSave;
1678 }
1679 if (flags & CONTEXT_DEBUG_REGISTERS)
1680 {
1681 to->Dr0 = from->Dr0;
1682 to->Dr1 = from->Dr1;
1683 to->Dr2 = from->Dr2;
1684 to->Dr3 = from->Dr3;
1685 to->Dr6 = from->Dr6;
1686 to->Dr7 = from->Dr7;
1687 }
1688 }
1689
1690
1691 /***********************************************************************
1692 * context_to_server
1693 *
1694 * Convert a register context to the server format.
1695 */
1696 NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
1697 {
1698 DWORD flags = from->ContextFlags & ~CONTEXT_AMD64; /* get rid of CPU id */
1699
1700 memset( to, 0, sizeof(*to) );
1701 to->cpu = CPU_x86_64;
1702
1703 if (flags & CONTEXT_CONTROL)
1704 {
1705 to->flags |= SERVER_CTX_CONTROL;
1706 to->ctl.x86_64_regs.rbp = from->Rbp;
1707 to->ctl.x86_64_regs.rip = from->Rip;
1708 to->ctl.x86_64_regs.rsp = from->Rsp;
1709 to->ctl.x86_64_regs.cs = from->SegCs;
1710 to->ctl.x86_64_regs.ss = from->SegSs;
1711 to->ctl.x86_64_regs.flags = from->EFlags;
1712 }
1713 if (flags & CONTEXT_INTEGER)
1714 {
1715 to->flags |= SERVER_CTX_INTEGER;
1716 to->integer.x86_64_regs.rax = from->Rax;
1717 to->integer.x86_64_regs.rcx = from->Rcx;
1718 to->integer.x86_64_regs.rdx = from->Rdx;
1719 to->integer.x86_64_regs.rbx = from->Rbx;
1720 to->integer.x86_64_regs.rsi = from->Rsi;
1721 to->integer.x86_64_regs.rdi = from->Rdi;
1722 to->integer.x86_64_regs.r8 = from->R8;
1723 to->integer.x86_64_regs.r9 = from->R9;
1724 to->integer.x86_64_regs.r10 = from->R10;
1725 to->integer.x86_64_regs.r11 = from->R11;
1726 to->integer.x86_64_regs.r12 = from->R12;
1727 to->integer.x86_64_regs.r13 = from->R13;
1728 to->integer.x86_64_regs.r14 = from->R14;
1729 to->integer.x86_64_regs.r15 = from->R15;
1730 }
1731 if (flags & CONTEXT_SEGMENTS)
1732 {
1733 to->flags |= SERVER_CTX_SEGMENTS;
1734 to->seg.x86_64_regs.ds = from->SegDs;
1735 to->seg.x86_64_regs.es = from->SegEs;
1736 to->seg.x86_64_regs.fs = from->SegFs;
1737 to->seg.x86_64_regs.gs = from->SegGs;
1738 }
1739 if (flags & CONTEXT_FLOATING_POINT)
1740 {
1741 to->flags |= SERVER_CTX_FLOATING_POINT;
1742 memcpy( to->fp.x86_64_regs.fpregs, &from->u.FltSave, sizeof(to->fp.x86_64_regs.fpregs) );
1743 }
1744 if (flags & CONTEXT_DEBUG_REGISTERS)
1745 {
1746 to->flags |= SERVER_CTX_DEBUG_REGISTERS;
1747 to->debug.x86_64_regs.dr0 = from->Dr0;
1748 to->debug.x86_64_regs.dr1 = from->Dr1;
1749 to->debug.x86_64_regs.dr2 = from->Dr2;
1750 to->debug.x86_64_regs.dr3 = from->Dr3;
1751 to->debug.x86_64_regs.dr6 = from->Dr6;
1752 to->debug.x86_64_regs.dr7 = from->Dr7;
1753 }
1754 return STATUS_SUCCESS;
1755 }
1756
1757
1758 /***********************************************************************
1759 * context_from_server
1760 *
1761 * Convert a register context from the server format.
1762 */
1763 NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
1764 {
1765 if (from->cpu != CPU_x86_64) return STATUS_INVALID_PARAMETER;
1766
1767 to->ContextFlags = CONTEXT_AMD64;
1768 if (from->flags & SERVER_CTX_CONTROL)
1769 {
1770 to->ContextFlags |= CONTEXT_CONTROL;
1771 to->Rbp = from->ctl.x86_64_regs.rbp;
1772 to->Rip = from->ctl.x86_64_regs.rip;
1773 to->Rsp = from->ctl.x86_64_regs.rsp;
1774 to->SegCs = from->ctl.x86_64_regs.cs;
1775 to->SegSs = from->ctl.x86_64_regs.ss;
1776 to->EFlags = from->ctl.x86_64_regs.flags;
1777 }
1778
1779 if (from->flags & SERVER_CTX_INTEGER)
1780 {
1781 to->ContextFlags |= CONTEXT_INTEGER;
1782 to->Rax = from->integer.x86_64_regs.rax;
1783 to->Rcx = from->integer.x86_64_regs.rcx;
1784 to->Rdx = from->integer.x86_64_regs.rdx;
1785 to->Rbx = from->integer.x86_64_regs.rbx;
1786 to->Rsi = from->integer.x86_64_regs.rsi;
1787 to->Rdi = from->integer.x86_64_regs.rdi;
1788 to->R8 = from->integer.x86_64_regs.r8;
1789 to->R9 = from->integer.x86_64_regs.r9;
1790 to->R10 = from->integer.x86_64_regs.r10;
1791 to->R11 = from->integer.x86_64_regs.r11;
1792 to->R12 = from->integer.x86_64_regs.r12;
1793 to->R13 = from->integer.x86_64_regs.r13;
1794 to->R14 = from->integer.x86_64_regs.r14;
1795 to->R15 = from->integer.x86_64_regs.r15;
1796 }
1797 if (from->flags & SERVER_CTX_SEGMENTS)
1798 {
1799 to->ContextFlags |= CONTEXT_SEGMENTS;
1800 to->SegDs = from->seg.x86_64_regs.ds;
1801 to->SegEs = from->seg.x86_64_regs.es;
1802 to->SegFs = from->seg.x86_64_regs.fs;
1803 to->SegGs = from->seg.x86_64_regs.gs;
1804 }
1805 if (from->flags & SERVER_CTX_FLOATING_POINT)
1806 {
1807 to->ContextFlags |= CONTEXT_FLOATING_POINT;
1808 memcpy( &to->u.FltSave, from->fp.x86_64_regs.fpregs, sizeof(from->fp.x86_64_regs.fpregs) );
1809 to->MxCsr = to->u.FltSave.MxCsr;
1810 }
1811 if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
1812 {
1813 to->ContextFlags |= CONTEXT_DEBUG_REGISTERS;
1814 to->Dr0 = from->debug.x86_64_regs.dr0;
1815 to->Dr1 = from->debug.x86_64_regs.dr1;
1816 to->Dr2 = from->debug.x86_64_regs.dr2;
1817 to->Dr3 = from->debug.x86_64_regs.dr3;
1818 to->Dr6 = from->debug.x86_64_regs.dr6;
1819 to->Dr7 = from->debug.x86_64_regs.dr7;
1820 }
1821 return STATUS_SUCCESS;
1822 }
1823
1824
1825 extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
1826 __ASM_GLOBAL_FUNC( raise_func_trampoline,
1827 __ASM_CFI(".cfi_signal_frame\n\t")
1828 __ASM_CFI(".cfi_def_cfa %rbp,144\n\t") /* red zone + rip + rbp */
1829 __ASM_CFI(".cfi_rel_offset %rip,8\n\t")
1830 __ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
1831 "call *%rdx\n\t"
1832 "int $3")
1833
1834 /***********************************************************************
1835 * setup_exception
1836 *
1837 * Setup a proper stack frame for the raise function, and modify the
1838 * sigcontext so that the return from the signal handler will call
1839 * the raise function.
1840 */
1841 static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func func )
1842 {
1843 struct stack_layout
1844 {
1845 CONTEXT context;
1846 EXCEPTION_RECORD rec;
1847 ULONG64 rbp;
1848 ULONG64 rip;
1849 ULONG64 red_zone[16];
1850 } *stack;
1851 ULONG64 *rsp_ptr;
1852 DWORD exception_code = 0;
1853
1854 stack = (struct stack_layout *)(RSP_sig(sigcontext) & ~15);
1855
1856 /* stack sanity checks */
1857
1858 if (is_inside_signal_stack( stack ))
1859 {
1860 ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1861 GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
1862 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1863 abort_thread(1);
1864 }
1865
1866 if (stack - 1 > stack || /* check for overflow in subtraction */
1867 (char *)stack <= (char *)NtCurrentTeb()->DeallocationStack ||
1868 (char *)stack > (char *)NtCurrentTeb()->Tib.StackBase)
1869 {
1870 WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1871 GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
1872 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1873 }
1874 else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->DeallocationStack + 4096)
1875 {
1876 /* stack overflow on last page, unrecoverable */
1877 UINT diff = (char *)NtCurrentTeb()->DeallocationStack + 4096 - (char *)(stack - 1);
1878 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1879 diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
1880 (ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
1881 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1882 abort_thread(1);
1883 }
1884 else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->Tib.StackLimit)
1885 {
1886 /* stack access below stack limit, may be recoverable */
1887 if (virtual_handle_stack_fault( stack - 1 )) exception_code = EXCEPTION_STACK_OVERFLOW;
1888 else
1889 {
1890 UINT diff = (char *)NtCurrentTeb()->Tib.StackLimit - (char *)(stack - 1);
1891 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1892 diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
1893 (ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
1894 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
1895 abort_thread(1);
1896 }
1897 }
1898
1899 stack--; /* push the stack_layout structure */
1900 #if defined(VALGRIND_MAKE_MEM_UNDEFINED)
1901 VALGRIND_MAKE_MEM_UNDEFINED(stack, sizeof(*stack));
1902 #elif defined(VALGRIND_MAKE_WRITABLE)
1903 VALGRIND_MAKE_WRITABLE(stack, sizeof(*stack));
1904 #endif
1905 stack->rec.ExceptionRecord = NULL;
1906 stack->rec.ExceptionCode = exception_code;
1907 stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
1908 stack->rec.ExceptionAddress = (void *)RIP_sig(sigcontext);
1909 stack->rec.NumberParameters = 0;
1910 save_context( &stack->context, sigcontext );
1911
1912 /* store return address and %rbp without aligning, so that the offset is fixed */
1913 rsp_ptr = (ULONG64 *)RSP_sig(sigcontext) - 16;
1914 *(--rsp_ptr) = RIP_sig(sigcontext);
1915 *(--rsp_ptr) = RBP_sig(sigcontext);
1916
1917 /* now modify the sigcontext to return to the raise function */
1918 RIP_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline;
1919 RDI_sig(sigcontext) = (ULONG_PTR)&stack->rec;
1920 RSI_sig(sigcontext) = (ULONG_PTR)&stack->context;
1921 RDX_sig(sigcontext) = (ULONG_PTR)func;
1922 RBP_sig(sigcontext) = (ULONG_PTR)rsp_ptr;
1923 RSP_sig(sigcontext) = (ULONG_PTR)stack;
1924 /* clear single-step, direction, and align check flag */
1925 EFL_sig(sigcontext) &= ~(0x100|0x400|0x40000);
1926
1927 return &stack->rec;
1928 }
1929
1930
1931 /**********************************************************************
1932 * find_function_info
1933 */
1934 static RUNTIME_FUNCTION *find_function_info( ULONG64 pc, HMODULE module,
1935 RUNTIME_FUNCTION *func, ULONG size )
1936 {
1937 int min = 0;
1938 int max = size/sizeof(*func) - 1;
1939
1940 while (min <= max)
1941 {
1942 int pos = (min + max) / 2;
1943 if ((char *)pc < (char *)module + func[pos].BeginAddress) max = pos - 1;
1944 else if ((char *)pc >= (char *)module + func[pos].EndAddress) min = pos + 1;
1945 else
1946 {
1947 func += pos;
1948 while (func->UnwindData & 1) /* follow chained entry */
1949 func = (RUNTIME_FUNCTION *)((char *)module + (func->UnwindData & ~1));
1950 return func;
1951 }
1952 }
1953 return NULL;
1954 }
1955
1956 /**********************************************************************
1957 * lookup_function_info
1958 */
1959 static RUNTIME_FUNCTION *lookup_function_info( ULONG64 pc, ULONG64 *base, LDR_MODULE **module )
1960 {
1961 RUNTIME_FUNCTION *func = NULL;
1962 struct dynamic_unwind_entry *entry;
1963 ULONG size;
1964
1965 /* PE module or wine module */
1966 if (!LdrFindEntryForAddress( (void *)pc, module ))
1967 {
1968 *base = (ULONG64)(*module)->BaseAddress;
1969 if ((func = RtlImageDirectoryEntryToData( (*module)->BaseAddress, TRUE,
1970 IMAGE_DIRECTORY_ENTRY_EXCEPTION, &size )))
1971 {
1972 /* lookup in function table */
1973 func = find_function_info( pc, (*module)->BaseAddress, func, size );
1974 }
1975 }
1976 else
1977 {
1978 *module = NULL;
1979
1980 RtlEnterCriticalSection( &dynamic_unwind_section );
1981 LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
1982 {
1983 if (pc >= entry->base && pc < entry->base + entry->size)
1984 {
1985 *base = entry->base;
1986
1987 /* use callback or lookup in function table */
1988 if (entry->callback)
1989 func = entry->callback( pc, entry->context );
1990 else
1991 func = find_function_info( pc, (HMODULE)entry->base, entry->table, entry->table_size );
1992 break;
1993 }
1994 }
1995 RtlLeaveCriticalSection( &dynamic_unwind_section );
1996 }
1997
1998 return func;
1999 }
2000
2001 /**********************************************************************
2002 * call_handler
2003 *
2004 * Call a single exception handler.
2005 * FIXME: Handle nested exceptions.
2006 */
2007 static NTSTATUS call_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch, CONTEXT *orig_context )
2008 {
2009 DWORD res;
2010
2011 dispatch->ControlPc = dispatch->ContextRecord->Rip;
2012
2013 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2014 dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2015 res = dispatch->LanguageHandler( rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2016 TRACE( "handler at %p returned %u\n", dispatch->LanguageHandler, res );
2017
2018 switch (res)
2019 {
2020 case ExceptionContinueExecution:
2021 if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
2022 *orig_context = *dispatch->ContextRecord;
2023 return STATUS_SUCCESS;
2024 case ExceptionContinueSearch:
2025 break;
2026 case ExceptionNestedException:
2027 break;
2028 default:
2029 return STATUS_INVALID_DISPOSITION;
2030 }
2031 return STATUS_UNHANDLED_EXCEPTION;
2032 }
2033
2034
2035 /**********************************************************************
2036 * call_teb_handler
2037 *
2038 * Call a single exception handler from the TEB chain.
2039 * FIXME: Handle nested exceptions.
2040 */
2041 static NTSTATUS call_teb_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
2042 EXCEPTION_REGISTRATION_RECORD *teb_frame, CONTEXT *orig_context )
2043 {
2044 EXCEPTION_REGISTRATION_RECORD *dispatcher;
2045 DWORD res;
2046
2047 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
2048 teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, &dispatcher );
2049 res = teb_frame->Handler( rec, teb_frame, dispatch->ContextRecord, &dispatcher );
2050 TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
2051
2052 switch (res)
2053 {
2054 case ExceptionContinueExecution:
2055 if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
2056 *orig_context = *dispatch->ContextRecord;
2057 return STATUS_SUCCESS;
2058 case ExceptionContinueSearch:
2059 break;
2060 case ExceptionNestedException:
2061 break;
2062 default:
2063 return STATUS_INVALID_DISPOSITION;
2064 }
2065 return STATUS_UNHANDLED_EXCEPTION;
2066 }
2067
2068
2069 /**********************************************************************
2070 * call_stack_handlers
2071 *
2072 * Call the stack handlers chain.
2073 */
2074 static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_context )
2075 {
2076 EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
2077 UNWIND_HISTORY_TABLE table;
2078 DISPATCHER_CONTEXT dispatch;
2079 CONTEXT context, new_context;
2080 LDR_MODULE *module;
2081 NTSTATUS status;
2082
2083 context = *orig_context;
2084 dispatch.TargetIp = 0;
2085 dispatch.ContextRecord = &context;
2086 dispatch.HistoryTable = &table;
2087 dispatch.ScopeIndex = 0; /* FIXME */
2088 for (;;)
2089 {
2090 new_context = context;
2091
2092 /* FIXME: should use the history table to make things faster */
2093
2094 dispatch.ImageBase = 0;
2095
2096 /* first look for PE exception information */
2097
2098 if ((dispatch.FunctionEntry = lookup_function_info( context.Rip, &dispatch.ImageBase, &module )))
2099 {
2100 dispatch.LanguageHandler = RtlVirtualUnwind( UNW_FLAG_EHANDLER, dispatch.ImageBase,
2101 context.Rip, dispatch.FunctionEntry,
2102 &new_context, &dispatch.HandlerData,
2103 &dispatch.EstablisherFrame, NULL );
2104 goto unwind_done;
2105 }
2106
2107 /* then look for host system exception information */
2108
2109 if (!module || (module->Flags & LDR_WINE_INTERNAL))
2110 {
2111 struct dwarf_eh_bases bases;
2112 const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context.Rip - 1), &bases );
2113
2114 if (fde)
2115 {
2116 status = dwarf_virtual_unwind( context.Rip, &dispatch.EstablisherFrame, &new_context,
2117 fde, &bases, &dispatch.LanguageHandler, &dispatch.HandlerData );
2118 if (status != STATUS_SUCCESS) return status;
2119 dispatch.FunctionEntry = NULL;
2120 if (dispatch.LanguageHandler && !module)
2121 {
2122 FIXME( "calling personality routine in system library not supported yet\n" );
2123 dispatch.LanguageHandler = NULL;
2124 }
2125 goto unwind_done;
2126 }
2127 }
2128 else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
2129
2130 /* no exception information, treat as a leaf function */
2131
2132 new_context.Rip = *(ULONG64 *)context.Rsp;
2133 new_context.Rsp = context.Rsp + sizeof(ULONG64);
2134 dispatch.EstablisherFrame = new_context.Rsp;
2135 dispatch.LanguageHandler = NULL;
2136
2137 unwind_done:
2138 if (!dispatch.EstablisherFrame) break;
2139
2140 if ((dispatch.EstablisherFrame & 7) ||
2141 dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
2142 dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)
2143 {
2144 ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
2145 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
2146 rec->ExceptionFlags |= EH_STACK_INVALID;
2147 break;
2148 }
2149
2150 if (dispatch.LanguageHandler)
2151 {
2152 status = call_handler( rec, &dispatch, orig_context );
2153 if (status != STATUS_UNHANDLED_EXCEPTION) return status;
2154 }
2155 /* hack: call wine handlers registered in the tib list */
2156 else while ((ULONG64)teb_frame < new_context.Rsp)
2157 {
2158 TRACE( "found wine frame %p rsp %lx handler %p\n",
2159 teb_frame, new_context.Rsp, teb_frame->Handler );
2160 dispatch.EstablisherFrame = (ULONG64)teb_frame;
2161 context = *orig_context;
2162 status = call_teb_handler( rec, &dispatch, teb_frame, orig_context );
2163 if (status != STATUS_UNHANDLED_EXCEPTION) return status;
2164 teb_frame = teb_frame->Prev;
2165 }
2166
2167 if (new_context.Rsp == (ULONG64)NtCurrentTeb()->Tib.StackBase) break;
2168 context = new_context;
2169 }
2170 return STATUS_UNHANDLED_EXCEPTION;
2171 }
2172
2173
2174 /*******************************************************************
2175 * raise_exception
2176 *
2177 * Implementation of NtRaiseException.
2178 */
2179 static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
2180 {
2181 NTSTATUS status;
2182
2183 if (first_chance)
2184 {
2185 DWORD c;
2186
2187 TRACE( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
2188 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
2189 context->Rip, GetCurrentThreadId() );
2190 for (c = 0; c < min( EXCEPTION_MAXIMUM_PARAMETERS, rec->NumberParameters ); c++)
2191 TRACE( " info[%d]=%016lx\n", c, rec->ExceptionInformation[c] );
2192 if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
2193 {
2194 if (rec->ExceptionInformation[1] >> 16)
2195 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
2196 rec->ExceptionAddress,
2197 (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
2198 else
2199 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
2200 rec->ExceptionAddress,
2201 (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
2202 }
2203 else
2204 {
2205 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
2206 context->Rax, context->Rbx, context->Rcx, context->Rdx );
2207 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
2208 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
2209 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
2210 context->R8, context->R9, context->R10, context->R11 );
2211 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
2212 context->R12, context->R13, context->R14, context->R15 );
2213 }
2214 status = send_debug_event( rec, TRUE, context );
2215 if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
2216 return STATUS_SUCCESS;
2217
2218 if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
2219 return STATUS_SUCCESS;
2220
2221 if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
2222 return status;
2223 }
2224
2225 /* last chance exception */
2226
2227 status = send_debug_event( rec, FALSE, context );
2228 if (status != DBG_CONTINUE)
2229 {
2230 if (rec->ExceptionFlags & EH_STACK_INVALID)
2231 ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
2232 else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
2233 ERR("Process attempted to continue execution after noncontinuable exception.\n");
2234 else
2235 ERR("Unhandled exception code %x flags %x addr %p\n",
2236 rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
2237 NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
2238 }
2239 return STATUS_SUCCESS;
2240 }
2241
2242
2243 /**********************************************************************
2244 * raise_segv_exception
2245 */
2246 static void raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
2247 {
2248 NTSTATUS status;
2249
2250 switch(rec->ExceptionCode)
2251 {
2252 case EXCEPTION_ACCESS_VIOLATION:
2253 if (rec->NumberParameters == 2)
2254 {
2255 if (!(rec->ExceptionCode = virtual_handle_fault( (void *)rec->ExceptionInformation[1],
2256 rec->ExceptionInformation[0] )))
2257 set_cpu_context( context );
2258 }
2259 break;
2260 }
2261 status = raise_exception( rec, context, TRUE );
2262 if (status) raise_status( status, rec );
2263 set_cpu_context( context );
2264 }
2265
2266
2267 /**********************************************************************
2268 * raise_generic_exception
2269 *
2270 * Generic raise function for exceptions that don't need special treatment.
2271 */
2272 static void raise_generic_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
2273 {
2274 NTSTATUS status = raise_exception( rec, context, TRUE );
2275 if (status) raise_status( status, rec );
2276 set_cpu_context( context );
2277 }
2278
2279
2280 /**********************************************************************
2281 * segv_handler
2282 *
2283 * Handler for SIGSEGV and related errors.
2284 */
2285 static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2286 {
2287 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_segv_exception );
2288 ucontext_t *ucontext = sigcontext;
2289
2290 switch(TRAP_sig(ucontext))
2291 {
2292 case TRAP_x86_OFLOW: /* Overflow exception */
2293 rec->ExceptionCode = EXCEPTION_INT_OVERFLOW;
2294 break;
2295 case TRAP_x86_BOUND: /* Bound range exception */
2296 rec->ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
2297 break;
2298 case TRAP_x86_PRIVINFLT: /* Invalid opcode exception */
2299 rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
2300 break;
2301 case TRAP_x86_STKFLT: /* Stack fault */
2302 rec->ExceptionCode = EXCEPTION_STACK_OVERFLOW;
2303 break;
2304 case TRAP_x86_SEGNPFLT: /* Segment not present exception */
2305 case TRAP_x86_PROTFLT: /* General protection fault */
2306 case TRAP_x86_UNKNOWN: /* Unknown fault code */
2307 rec->ExceptionCode = ERROR_sig(ucontext) ? EXCEPTION_ACCESS_VIOLATION : EXCEPTION_PRIV_INSTRUCTION;
2308 rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
2309 break;
2310 case TRAP_x86_PAGEFLT: /* Page fault */
2311 rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
2312 rec->NumberParameters = 2;
2313 rec->ExceptionInformation[0] = (ERROR_sig(ucontext) & 2) != 0;
2314 rec->ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
2315 break;
2316 case TRAP_x86_ALIGNFLT: /* Alignment check exception */
2317 rec->ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
2318 break;
2319 default:
2320 ERR( "Got unexpected trap %ld\n", (ULONG_PTR)TRAP_sig(ucontext) );
2321 /* fall through */
2322 case TRAP_x86_NMI: /* NMI interrupt */
2323 case TRAP_x86_DNA: /* Device not available exception */
2324 case TRAP_x86_DOUBLEFLT: /* Double fault exception */
2325 case TRAP_x86_TSSFLT: /* Invalid TSS exception */
2326 case TRAP_x86_MCHK: /* Machine check exception */
2327 case TRAP_x86_CACHEFLT: /* Cache flush exception */
2328 rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
2329 break;
2330 }
2331 }
2332
2333 /**********************************************************************
2334 * trap_handler
2335 *
2336 * Handler for SIGTRAP.
2337 */
2338 static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2339 {
2340 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2341
2342 switch (siginfo->si_code)
2343 {
2344 case TRAP_TRACE: /* Single-step exception */
2345 case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
2346 rec->ExceptionCode = EXCEPTION_SINGLE_STEP;
2347 break;
2348 case TRAP_BRKPT: /* Breakpoint exception */
2349 rec->ExceptionAddress = (char *)rec->ExceptionAddress - 1; /* back up over the int3 instruction */
2350 /* fall through */
2351 default:
2352 rec->ExceptionCode = EXCEPTION_BREAKPOINT;
2353 break;
2354 }
2355 }
2356
2357 /**********************************************************************
2358 * fpe_handler
2359 *
2360 * Handler for SIGFPE.
2361 */
2362 static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2363 {
2364 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2365
2366 switch (siginfo->si_code)
2367 {
2368 case FPE_FLTSUB:
2369 rec->ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
2370 break;
2371 case FPE_INTDIV:
2372 rec->ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
2373 break;
2374 case FPE_INTOVF:
2375 rec->ExceptionCode = EXCEPTION_INT_OVERFLOW;
2376 break;
2377 case FPE_FLTDIV:
2378 rec->ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
2379 break;
2380 case FPE_FLTOVF:
2381 rec->ExceptionCode = EXCEPTION_FLT_OVERFLOW;
2382 break;
2383 case FPE_FLTUND:
2384 rec->ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
2385 break;
2386 case FPE_FLTRES:
2387 rec->ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
2388 break;
2389 case FPE_FLTINV:
2390 default:
2391 rec->ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
2392 break;
2393 }
2394 }
2395
2396 /**********************************************************************
2397 * int_handler
2398 *
2399 * Handler for SIGINT.
2400 */
2401 static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2402 {
2403 if (!dispatch_signal(SIGINT))
2404 {
2405 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2406 rec->ExceptionCode = CONTROL_C_EXIT;
2407 }
2408 }
2409
2410
2411 /**********************************************************************
2412 * abrt_handler
2413 *
2414 * Handler for SIGABRT.
2415 */
2416 static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
2417 {
2418 EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
2419 rec->ExceptionCode = EXCEPTION_WINE_ASSERTION;
2420 rec->ExceptionFlags = EH_NONCONTINUABLE;
2421 }
2422
2423
2424 /**********************************************************************
2425 * quit_handler
2426 *
2427 * Handler for SIGQUIT.
2428 */
2429 static void quit_handler( int signal, siginfo_t *siginfo, void *ucontext )
2430 {
2431 abort_thread(0);
2432 }
2433
2434
2435 /**********************************************************************
2436 * usr1_handler
2437 *
2438 * Handler for SIGUSR1, used to signal a thread that it got suspended.
2439 */
2440 static void usr1_handler( int signal, siginfo_t *siginfo, void *ucontext )
2441 {
2442 CONTEXT context;
2443
2444 save_context( &context, ucontext );
2445 wait_suspend( &context );
2446 restore_context( &context, ucontext );
2447 }
2448
2449
2450 /***********************************************************************
2451 * __wine_set_signal_handler (NTDLL.@)
2452 */
2453 int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
2454 {
2455 if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
2456 if (handlers[sig] != NULL) return -2;
2457 handlers[sig] = wsh;
2458 return 0;
2459 }
2460
2461
2462 /**********************************************************************
2463 * signal_alloc_thread
2464 */
2465 NTSTATUS signal_alloc_thread( TEB **teb )
2466 {
2467 static size_t sigstack_zero_bits;
2468 SIZE_T size;
2469 NTSTATUS status;
2470
2471 if (!sigstack_zero_bits)
2472 {
2473 size_t min_size = teb_size + max( MINSIGSTKSZ, 8192 );
2474 /* find the first power of two not smaller than min_size */
2475 sigstack_zero_bits = 12;
2476 while ((1u << sigstack_zero_bits) < min_size) sigstack_zero_bits++;
2477 signal_stack_size = (1 << sigstack_zero_bits) - teb_size;
2478 assert( sizeof(TEB) <= teb_size );
2479 }
2480
2481 size = 1 << sigstack_zero_bits;
2482 *teb = NULL;
2483 if (!(status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb, sigstack_zero_bits,
2484 &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
2485 {
2486 (*teb)->Tib.Self = &(*teb)->Tib;
2487 (*teb)->Tib.ExceptionList = (void *)~0UL;
2488 }
2489 return status;
2490 }
2491
2492
2493 /**********************************************************************
2494 * signal_free_thread
2495 */
2496 void signal_free_thread( TEB *teb )
2497 {
2498 SIZE_T size;
2499
2500 if (teb->DeallocationStack)
2501 {
2502 size = 0;
2503 NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
2504 }
2505 size = 0;
2506 NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
2507 }
2508
2509
2510 /**********************************************************************
2511 * signal_init_thread
2512 */
2513 void signal_init_thread( TEB *teb )
2514 {
2515 const WORD fpu_cw = 0x27f;
2516 stack_t ss;
2517
2518 #if defined __linux__
2519 arch_prctl( ARCH_SET_GS, teb );
2520 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
2521 amd64_set_gsbase( teb );
2522 #elif defined(__NetBSD__)
2523 sysarch( X86_64_SET_GSBASE, &teb );
2524 #else
2525 # error Please define setting %gs for your architecture
2526 #endif
2527
2528 ss.ss_sp = (char *)teb + teb_size;
2529 ss.ss_size = signal_stack_size;
2530 ss.ss_flags = 0;
2531 if (sigaltstack(&ss, NULL) == -1) perror( "sigaltstack" );
2532
2533 #ifdef __GNUC__
2534 __asm__ volatile ("fninit; fldcw %0" : : "m" (fpu_cw));
2535 #else
2536 FIXME("FPU setup not implemented for this platform.\n");
2537 #endif
2538 }
2539
2540 /**********************************************************************
2541 * signal_init_process
2542 */
2543 void signal_init_process(void)
2544 {
2545 struct sigaction sig_act;
2546
2547 sig_act.sa_mask = server_block_set;
2548 sig_act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
2549
2550 sig_act.sa_sigaction = int_handler;
2551 if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
2552 sig_act.sa_sigaction = fpe_handler;
2553 if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
2554 sig_act.sa_sigaction = abrt_handler;
2555 if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
2556 sig_act.sa_sigaction = quit_handler;
2557 if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
2558 sig_act.sa_sigaction = usr1_handler;
2559 if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
2560
2561 sig_act.sa_sigaction = segv_handler;
2562 if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
2563 if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
2564 #ifdef SIGBUS
2565 if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
2566 #endif
2567
2568 #ifdef SIGTRAP
2569 sig_act.sa_sigaction = trap_handler;
2570 if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
2571 #endif
2572 return;
2573
2574 error:
2575 perror("sigaction");
2576 exit(1);
2577 }
2578
2579
2580 /**********************************************************************
2581 * RtlAddFunctionTable (NTDLL.@)
2582 */
2583 BOOLEAN CDECL RtlAddFunctionTable( RUNTIME_FUNCTION *table, DWORD count, DWORD64 addr )
2584 {
2585 struct dynamic_unwind_entry *entry;
2586
2587 TRACE( "%p %u %lx\n", table, count, addr );
2588
2589 /* NOTE: Windows doesn't check if table is aligned or a NULL pointer */
2590
2591 entry = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry) );
2592 if (!entry)
2593 return FALSE;
2594
2595 entry->base = addr;
2596 entry->size = table[count - 1].EndAddress;
2597 entry->table = table;
2598 entry->table_size = count * sizeof(RUNTIME_FUNCTION);
2599 entry->callback = NULL;
2600 entry->context = NULL;
2601
2602 RtlEnterCriticalSection( &dynamic_unwind_section );
2603 list_add_tail( &dynamic_unwind_list, &entry->entry );
2604 RtlLeaveCriticalSection( &dynamic_unwind_section );
2605
2606 return TRUE;
2607 }
2608
2609
2610 /**********************************************************************
2611 * RtlInstallFunctionTableCallback (NTDLL.@)
2612 */
2613 BOOLEAN CDECL RtlInstallFunctionTableCallback( DWORD64 table, DWORD64 base, DWORD length,
2614 PGET_RUNTIME_FUNCTION_CALLBACK callback, PVOID context, PCWSTR dll )
2615 {
2616 struct dynamic_unwind_entry *entry;
2617
2618 TRACE( "%lx %lx %d %p %p %s\n", table, base, length, callback, context, wine_dbgstr_w(dll) );
2619
2620 /* NOTE: Windows doesn't check if the provided callback is a NULL pointer */
2621
2622 /* both low-order bits must be set */
2623 if ((table & 0x3) != 0x3)
2624 return FALSE;
2625
2626 entry = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry) );
2627 if (!entry)
2628 return FALSE;
2629
2630 entry->base = base;
2631 entry->size = length;
2632 entry->table = (RUNTIME_FUNCTION *)table;
2633 entry->table_size = 0;
2634 entry->callback = callback;
2635 entry->context = context;
2636
2637 RtlEnterCriticalSection( &dynamic_unwind_section );
2638 list_add_tail( &dynamic_unwind_list, &entry->entry );
2639 RtlLeaveCriticalSection( &dynamic_unwind_section );
2640
2641 return TRUE;
2642 }
2643
2644
2645 /**********************************************************************
2646 * RtlDeleteFunctionTable (NTDLL.@)
2647 */
2648 BOOLEAN CDECL RtlDeleteFunctionTable( RUNTIME_FUNCTION *table )
2649 {
2650 struct dynamic_unwind_entry *entry, *to_free = NULL;
2651
2652 TRACE( "%p\n", table );
2653
2654 RtlEnterCriticalSection( &dynamic_unwind_section );
2655 LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
2656 {
2657 if (entry->table == table)
2658 {
2659 to_free = entry;
2660 list_remove( &entry->entry );
2661 break;
2662 }
2663 }
2664 RtlLeaveCriticalSection( &dynamic_unwind_section );
2665
2666 if (!to_free)
2667 return FALSE;
2668
2669 RtlFreeHeap( GetProcessHeap(), 0, to_free );
2670 return TRUE;
2671 }
2672
2673
2674 /**********************************************************************
2675 * RtlLookupFunctionEntry (NTDLL.@)
2676 */
2677 PRUNTIME_FUNCTION WINAPI RtlLookupFunctionEntry( ULONG64 pc, ULONG64 *base, UNWIND_HISTORY_TABLE *table )
2678 {
2679 LDR_MODULE *module;
2680 RUNTIME_FUNCTION *func;
2681
2682 /* FIXME: should use the history table to make things faster */
2683
2684 func = lookup_function_info( pc, base, &module );
2685 if (!func)
2686 {
2687 *base = 0;
2688 if (module)
2689 WARN( "no exception table found in module %p pc %lx\n", module->BaseAddress, pc );
2690 else
2691 WARN( "module not found for %lx\n", pc );
2692 }
2693
2694 return func;
2695 }
2696
2697 static ULONG64 get_int_reg( CONTEXT *context, int reg )
2698 {
2699 return *(&context->Rax + reg);
2700 }
2701
2702 static void set_int_reg( CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr, int reg, ULONG64 val )
2703 {
2704 *(&context->Rax + reg) = val;
2705 if (ctx_ptr) ctx_ptr->u2.IntegerContext[reg] = &context->Rax + reg;
2706 }
2707
2708 static void set_float_reg( CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr, int reg, M128A val )
2709 {
2710 *(&context->u.s.Xmm0 + reg) = val;
2711 if (ctx_ptr) ctx_ptr->u.FloatingContext[reg] = &context->u.s.Xmm0 + reg;
2712 }
2713
2714 static int get_opcode_size( struct opcode op )
2715 {
2716 switch (op.code)
2717 {
2718 case UWOP_ALLOC_LARGE:
2719 return 2 + (op.info != 0);
2720 case UWOP_SAVE_NONVOL:
2721 case UWOP_SAVE_XMM128:
2722 return 2;
2723 case UWOP_SAVE_NONVOL_FAR:
2724 case UWOP_SAVE_XMM128_FAR:
2725 return 3;
2726 default:
2727 return 1;
2728 }
2729 }
2730
2731 static BOOL is_inside_epilog( BYTE *pc, ULONG64 base, const RUNTIME_FUNCTION *function )
2732 {
2733 /* add or lea must be the first instruction, and it must have a rex.W prefix */
2734 if ((pc[0] & 0xf8) == 0x48)
2735 {
2736 switch (pc[1])
2737 {
2738 case 0x81: /* add $nnnn,%rsp */
2739 if (pc[0] == 0x48 && pc[2] == 0xc4)
2740 {
2741 pc += 7;
2742 break;
2743 }
2744 return FALSE;
2745 case 0x83: /* add $n,%rsp */
2746 if (pc[0] == 0x48 && pc[2] == 0xc4)
2747 {
2748 pc += 4;
2749 break;
2750 }
2751 return FALSE;
2752 case 0x8d: /* lea n(reg),%rsp */
2753 if (pc[0] & 0x06) return FALSE; /* rex.RX must be cleared */
2754 if (((pc[2] >> 3) & 7) != 4) return FALSE; /* dest reg mus be %rsp */
2755 if ((pc[2] & 7) == 4) return FALSE; /* no SIB byte allowed */
2756 if ((pc[2] >> 6) == 1) /* 8-bit offset */
2757 {
2758 pc += 4;
2759 break;
2760 }
2761 if ((pc[2] >> 6) == 2) /* 32-bit offset */
2762 {
2763 pc += 7;
2764 break;
2765 }
2766 return FALSE;
2767 }
2768 }
2769
2770 /* now check for various pop instructions */
2771
2772 for (;;)
2773 {
2774 if ((*pc & 0xf0) == 0x40) pc++; /* rex prefix */
2775
2776 switch (*pc)
2777 {
2778 case 0x58: /* pop %rax/%r8 */
2779 case 0x59: /* pop %rcx/%r9 */
2780 case 0x5a: /* pop %rdx/%r10 */
2781 case 0x5b: /* pop %rbx/%r11 */
2782 case 0x5c: /* pop %rsp/%r12 */
2783 case 0x5d: /* pop %rbp/%r13 */
2784 case 0x5e: /* pop %rsi/%r14 */
2785 case 0x5f: /* pop %rdi/%r15 */
2786 pc++;
2787 continue;
2788 case 0xc2: /* ret $nn */
2789 case 0xc3: /* ret */
2790 return TRUE;
2791 case 0xe9: /* jmp nnnn */
2792 pc += 5 + *(LONG *)(pc + 1);
2793 if (pc - (BYTE *)base >= function->BeginAddress && pc - (BYTE *)base < function->EndAddress)
2794 continue;
2795 break;
2796 case 0xeb: /* jmp n */
2797 pc += 2 + (signed char)pc[1];
2798 if (pc - (BYTE *)base >= function->BeginAddress && pc - (BYTE *)base < function->EndAddress)
2799 continue;
2800 break;
2801 case 0xf3: /* rep; ret (for amd64 prediction bug) */
2802 return pc[1] == 0xc3;
2803 }
2804 return FALSE;
2805 }
2806 }
2807
2808 /* execute a function epilog, which must have been validated with is_inside_epilog() */
2809 static void interpret_epilog( BYTE *pc, CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
2810 {
2811 for (;;)
2812 {
2813 BYTE rex = 0;
2814
2815 if ((*pc & 0xf0) == 0x40) rex = *pc++ & 0x0f; /* rex prefix */
2816
2817 switch (*pc)
2818 {
2819 case 0x58: /* pop %rax/r8 */
2820 case 0x59: /* pop %rcx/r9 */
2821 case 0x5a: /* pop %rdx/r10 */
2822 case 0x5b: /* pop %rbx/r11 */
2823 case 0x5c: /* pop %rsp/r12 */
2824 case 0x5d: /* pop %rbp/r13 */
2825 case 0x5e: /* pop %rsi/r14 */
2826 case 0x5f: /* pop %rdi/r15 */
2827 set_int_reg( context, ctx_ptr, *pc - 0x58 + (rex & 1) * 8, *(ULONG64 *)context->Rsp );
2828 context->Rsp += sizeof(ULONG64);
2829 pc++;
2830 continue;
2831 case 0x81: /* add $nnnn,%rsp */
2832 context->Rsp += *(LONG *)(pc + 2);
2833 pc += 2 + sizeof(LONG);
2834 continue;
2835 case 0x83: /* add $n,%rsp */
2836 context->Rsp += (signed char)pc[2];
2837 pc += 3;
2838 continue;
2839 case 0x8d:
2840 if ((pc[1] >> 6) == 1) /* lea n(reg),%rsp */
2841 {
2842 context->Rsp = get_int_reg( context, (pc[1] & 7) + (rex & 1) * 8 ) + (signed char)pc[2];
2843 pc += 3;
2844 }
2845 else /* lea nnnn(reg),%rsp */
2846 {
2847 context->Rsp = get_int_reg( context, (pc[1] & 7) + (rex & 1) * 8 ) + *(LONG *)(pc + 2);
2848 pc += 2 + sizeof(LONG);
2849 }
2850 continue;
2851 case 0xc2: /* ret $nn */
2852 context->Rip = *(ULONG64 *)context->Rsp;
2853 context->Rsp += sizeof(ULONG64) + *(WORD *)(pc + 1);
2854 return;
2855 case 0xc3: /* ret */
2856 case 0xf3: /* rep; ret */
2857 context->Rip = *(ULONG64 *)context->Rsp;
2858 context->Rsp += sizeof(ULONG64);
2859 return;
2860 case 0xe9: /* jmp nnnn */
2861 pc += 5 + *(LONG *)(pc + 1);
2862 continue;
2863 case 0xeb: /* jmp n */
2864 pc += 2 + (signed char)pc[1];
2865 continue;
2866 }
2867 return;
2868 }
2869 }
2870
2871 /**********************************************************************
2872 * RtlVirtualUnwind (NTDLL.@)
2873 */
2874 PVOID WINAPI RtlVirtualUnwind( ULONG type, ULONG64 base, ULONG64 pc,
2875 RUNTIME_FUNCTION *function, CONTEXT *context,
2876 PVOID *data, ULONG64 *frame_ret,
2877 KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
2878 {
2879 union handler_data *handler_data;
2880 ULONG64 frame, off;
2881 struct UNWIND_INFO *info;
2882 unsigned int i, prolog_offset;
2883
2884 TRACE( "type %x rip %lx rsp %lx\n", type, pc, context->Rsp );
2885 if (TRACE_ON(seh)) dump_unwind_info( base, function );
2886
2887 frame = *frame_ret = context->Rsp;
2888 for (;;)
2889 {
2890 info = (struct UNWIND_INFO *)((char *)base + function->UnwindData);
2891 handler_data = (union handler_data *)&info->opcodes[(info->count + 1) & ~1];
2892
2893 if (info->version != 1)
2894 {
2895 FIXME( "unknown unwind info version %u at %p\n", info->version, info );
2896 return NULL;
2897 }
2898
2899 if (info->frame_reg)
2900 frame = get_int_reg( context, info->frame_reg ) - info->frame_offset * 16;
2901
2902 /* check if in prolog */
2903 if (pc >= base + function->BeginAddress && pc < base + function->BeginAddress + info->prolog)
2904 {
2905 prolog_offset = pc - base - function->BeginAddress;
2906 }
2907 else
2908 {
2909 prolog_offset = ~0;
2910 if (is_inside_epilog( (BYTE *)pc, base, function ))
2911 {
2912 interpret_epilog( (BYTE *)pc, context, ctx_ptr );
2913 *frame_ret = frame;
2914 return NULL;
2915 }
2916 }
2917
2918 for (i = 0; i < info->count; i += get_opcode_size(info->opcodes[i]))
2919 {
2920 if (prolog_offset < info->opcodes[i].offset) continue; /* skip it */
2921
2922 switch (info->opcodes[i].code)
2923 {
2924 case UWOP_PUSH_NONVOL: /* pushq %reg */
2925 set_int_reg( context, ctx_ptr, info->opcodes[i].info, *(ULONG64 *)context->Rsp );
2926 context->Rsp += sizeof(ULONG64);
2927 break;
2928 case UWOP_ALLOC_LARGE: /* subq $nn,%rsp */
2929 if (info->opcodes[i].info) context->Rsp += *(DWORD *)&info->opcodes[i+1];
2930 else context->Rsp += *(USHORT *)&info->opcodes[i+1] * 8;
2931 break;
2932 case UWOP_ALLOC_SMALL: /* subq $n,%rsp */
2933 context->Rsp += (info->opcodes[i].info + 1) * 8;
2934 break;
2935 case UWOP_SET_FPREG: /* leaq nn(%rsp),%framereg */
2936 context->Rsp = *frame_ret = frame;
2937 break;
2938 case UWOP_SAVE_NONVOL: /* movq %reg,n(%rsp) */
2939 off = frame + *(USHORT *)&info->opcodes[i+1] * 8;
2940 set_int_reg( context, ctx_ptr, info->opcodes[i].info, *(ULONG64 *)off );
2941 break;
2942 case UWOP_SAVE_NONVOL_FAR: /* movq %reg,nn(%rsp) */
2943 off = frame + *(DWORD *)&info->opcodes[i+1];
2944 set_int_reg( context, ctx_ptr, info->opcodes[i].info, *(ULONG64 *)off );
2945 break;
2946 case UWOP_SAVE_XMM128: /* movaps %xmmreg,n(%rsp) */
2947 off = frame + *(USHORT *)&info->opcodes[i+1] * 16;
2948 set_float_reg( context, ctx_ptr, info->opcodes[i].info, *(M128A *)off );
2949 break;
2950 case UWOP_SAVE_XMM128_FAR: /* movaps %xmmreg,nn(%rsp) */
2951 off = frame + *(DWORD *)&info->opcodes[i+1];
2952 set_float_reg( context, ctx_ptr, info->opcodes[i].info, *(M128A *)off );
2953 break;
2954 case UWOP_PUSH_MACHFRAME:
2955 FIXME( "PUSH_MACHFRAME %u\n", info->opcodes[i].info );
2956 break;
2957 default:
2958 FIXME( "unknown code %u\n", info->opcodes[i].code );
2959 break;
2960 }
2961 }
2962
2963 if (!(info->flags & UNW_FLAG_CHAININFO)) break;
2964 function = &handler_data->chain; /* restart with the chained info */
2965 }
2966
2967 /* now pop return address */
2968 context->Rip = *(ULONG64 *)context->Rsp;
2969 context->Rsp += sizeof(ULONG64);
2970
2971 if (!(info->flags & type)) return NULL; /* no matching handler */
2972 if (prolog_offset != ~0) return NULL; /* inside prolog */
2973
2974 *data = &handler_data->handler + 1;
2975 return (char *)base + handler_data->handler;
2976 }
2977
2978
2979 /**********************************************************************
2980 * call_unwind_handler
2981 *
2982 * Call a single unwind handler.
2983 * FIXME: Handle nested exceptions.
2984 */
2985 static void call_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch )
2986 {
2987 DWORD res;
2988
2989 dispatch->ControlPc = dispatch->ContextRecord->Rip;
2990
2991 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2992 dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2993 res = dispatch->LanguageHandler( rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
2994 TRACE( "handler %p returned %x\n", dispatch->LanguageHandler, res );
2995
2996 switch (res)
2997 {
2998 case ExceptionContinueSearch:
2999 break;
3000 case ExceptionCollidedUnwind:
3001 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
3002 break;
3003 default:
3004 raise_status( STATUS_INVALID_DISPOSITION, rec );
3005 break;
3006 }
3007 }
3008
3009
3010 /**********************************************************************
3011 * call_teb_unwind_handler
3012 *
3013 * Call a single unwind handler from the TEB chain.
3014 * FIXME: Handle nested exceptions.
3015 */
3016 static void call_teb_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
3017 EXCEPTION_REGISTRATION_RECORD *teb_frame )
3018 {
3019 EXCEPTION_REGISTRATION_RECORD *dispatcher;
3020 DWORD res;
3021
3022 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
3023 teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, &dispatcher );
3024 res = teb_frame->Handler( rec, teb_frame, dispatch->ContextRecord, &dispatcher );
3025 TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
3026
3027 switch (res)
3028 {
3029 case ExceptionContinueSearch:
3030 break;
3031 case ExceptionCollidedUnwind:
3032 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
3033 break;
3034 default:
3035 raise_status( STATUS_INVALID_DISPOSITION, rec );
3036 break;
3037 }
3038 }
3039
3040
3041 /*******************************************************************
3042 * RtlUnwindEx (NTDLL.@)
3043 */
3044 void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec,
3045 PVOID retval, CONTEXT *context, UNWIND_HISTORY_TABLE *table )
3046 {
3047 EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
3048 EXCEPTION_RECORD record;
3049 DISPATCHER_CONTEXT dispatch;
3050 CONTEXT new_context;
3051 LDR_MODULE *module;
3052 NTSTATUS status;
3053 DWORD i;
3054
3055 RtlCaptureContext( context );
3056 new_context = *context;
3057
3058 /* build an exception record, if we do not have one */
3059 if (!rec)
3060 {
3061 record.ExceptionCode = STATUS_UNWIND;
3062 record.ExceptionFlags = 0;
3063 record.ExceptionRecord = NULL;
3064 record.ExceptionAddress = (void *)context->Rip;
3065 record.NumberParameters = 0;
3066 rec = &record;
3067 }
3068
3069 rec->ExceptionFlags |= EH_UNWINDING | (end_frame ? 0 : EH_EXIT_UNWIND);
3070
3071 TRACE( "code=%x flags=%x end_frame=%p target_ip=%p rip=%016lx\n",
3072 rec->ExceptionCode, rec->ExceptionFlags, end_frame, target_ip, context->Rip );
3073 for (i = 0; i < min( EXCEPTION_MAXIMUM_PARAMETERS, rec->NumberParameters ); i++)
3074 TRACE( " info[%d]=%016lx\n", i, rec->ExceptionInformation[i] );
3075 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
3076 context->Rax, context->Rbx, context->Rcx, context->Rdx );
3077 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
3078 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
3079 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
3080 context->R8, context->R9, context->R10, context->R11 );
3081 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
3082 context->R12, context->R13, context->R14, context->R15 );
3083
3084 dispatch.EstablisherFrame = context->Rsp;
3085 dispatch.TargetIp = (ULONG64)target_ip;
3086 dispatch.ContextRecord = context;
3087 dispatch.HistoryTable = table;
3088
3089 for (;;)
3090 {
3091 /* FIXME: should use the history table to make things faster */
3092
3093 dispatch.ImageBase = 0;
3094 dispatch.ScopeIndex = 0; /* FIXME */
3095
3096 /* first look for PE exception information */
3097
3098 if ((dispatch.FunctionEntry = lookup_function_info( context->Rip, &dispatch.ImageBase, &module )))
3099 {
3100 dispatch.LanguageHandler = RtlVirtualUnwind( UNW_FLAG_UHANDLER, dispatch.ImageBase,
3101 context->Rip, dispatch.FunctionEntry,
3102 &new_context, &dispatch.HandlerData,
3103 &dispatch.EstablisherFrame, NULL );
3104 goto unwind_done;
3105 }
3106
3107 /* then look for host system exception information */
3108
3109 if (!module || (module->Flags & LDR_WINE_INTERNAL))
3110 {
3111 struct dwarf_eh_bases bases;
3112 const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context->Rip - 1), &bases );
3113
3114 if (fde)
3115 {
3116 dispatch.FunctionEntry = NULL;
3117 status = dwarf_virtual_unwind( context->Rip, &dispatch.EstablisherFrame, &new_context, fde,
3118 &bases, &dispatch.LanguageHandler, &dispatch.HandlerData );
3119 if (status != STATUS_SUCCESS) raise_status( status, rec );
3120 if (dispatch.LanguageHandler && !module)
3121 {
3122 FIXME( "calling personality routine in system library not supported yet\n" );
3123 dispatch.LanguageHandler = NULL;
3124 }
3125 goto unwind_done;
3126 }
3127 }
3128 else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
3129
3130 /* no exception information, treat as a leaf function */
3131
3132 new_context.Rip = *(ULONG64 *)context->Rsp;
3133 new_context.Rsp = context->Rsp + sizeof(ULONG64);
3134 dispatch.EstablisherFrame = new_context.Rsp;
3135 dispatch.LanguageHandler = NULL;
3136
3137 unwind_done:
3138 if (!dispatch.EstablisherFrame) break;
3139
3140 if (is_inside_signal_stack( (void *)dispatch.EstablisherFrame ))
3141 {
3142 TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch.EstablisherFrame,
3143 get_signal_stack(), (char *)get_signal_stack() + signal_stack_size );
3144 *context = new_context;
3145 continue;
3146 }
3147
3148 if ((dispatch.EstablisherFrame & 7) ||
3149 dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
3150 dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)
3151 {
3152 ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
3153 NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
3154 rec->ExceptionFlags |= EH_STACK_INVALID;
3155 break;
3156 }
3157
3158 if (dispatch.LanguageHandler)
3159 {
3160 if (end_frame && (dispatch.EstablisherFrame > (ULONG64)end_frame))
3161 {
3162 ERR( "invalid end frame %lx/%p\n", dispatch.EstablisherFrame, end_frame );
3163 raise_status( STATUS_INVALID_UNWIND_TARGET, rec );
3164 }
3165 if (dispatch.EstablisherFrame == (ULONG64)end_frame) rec->ExceptionFlags |= EH_TARGET_UNWIND;
3166 call_unwind_handler( rec, &dispatch );
3167 }
3168 else /* hack: call builtin handlers registered in the tib list */
3169 {
3170 while ((ULONG64)teb_frame < new_context.Rsp && (ULONG64)teb_frame < (ULONG64)end_frame)
3171 {
3172 TRACE( "found builtin frame %p handler %p\n", teb_frame, teb_frame->Handler );
3173 dispatch.EstablisherFrame = (ULONG64)teb_frame;
3174 call_teb_unwind_handler( rec, &dispatch, teb_frame );
3175 teb_frame = __wine_pop_frame( teb_frame );
3176 }
3177 if ((ULONG64)teb_frame == (ULONG64)end_frame && (ULONG64)end_frame < new_context.Rsp) break;
3178 dispatch.EstablisherFrame = new_context.Rsp;
3179 }
3180
3181 if (context->Rsp == (ULONG64)end_frame) break;
3182 *context = new_context;
3183 }
3184
3185 if (rec->ExceptionCode == STATUS_LONGJUMP && rec->NumberParameters >= 1)
3186 {
3187 struct MSVCRT_JUMP_BUFFER *jmp = (struct MSVCRT_JUMP_BUFFER *)rec->ExceptionInformation[0];
3188 context->Rbx = jmp->Rbx;
3189 context->Rsp = jmp->Rsp;
3190 context->Rbp = jmp->Rbp;
3191 context->Rsi = jmp->Rsi;
3192 context->Rdi = jmp->Rdi;
3193 context->R12 = jmp->R12;
3194 context->R13 = jmp->R13;
3195 context->R14 = jmp->R14;
3196 context->R15 = jmp->R15;
3197 context->Rip = jmp->Rip;
3198 context->u.s.Xmm6 = jmp->Xmm6;
3199 context->u.s.Xmm7 = jmp->Xmm7;
3200 context->u.s.Xmm8 = jmp->Xmm8;
3201 context->u.s.Xmm9 = jmp->Xmm9;
3202 context->u.s.Xmm10 = jmp->Xmm10;
3203 context->u.s.Xmm11 = jmp->Xmm11;
3204 context->u.s.Xmm12 = jmp->Xmm12;
3205 context->u.s.Xmm13 = jmp->Xmm13;
3206 context->u.s.Xmm14 = jmp->Xmm14;
3207 context->u.s.Xmm15 = jmp->Xmm15;
3208 }
3209 else if (rec->ExceptionCode == STATUS_UNWIND_CONSOLIDATE && rec->NumberParameters >= 1)
3210 {
3211 PVOID (CALLBACK *consolidate)(EXCEPTION_RECORD *) = (void *)rec->ExceptionInformation[0];
3212 TRACE( "calling consolidate callback %p\n", consolidate );
3213 target_ip = consolidate( rec );
3214 }
3215 context->Rax = (ULONG64)retval;
3216 context->Rip = (ULONG64)target_ip;
3217 TRACE( "returning to %lx stack %lx\n", context->Rip, context->Rsp );
3218 set_cpu_context( context );
3219 }
3220
3221
3222 /*******************************************************************
3223 * RtlUnwind (NTDLL.@)
3224 */
3225 void WINAPI RtlUnwind( void *frame, void *target_ip, EXCEPTION_RECORD *rec, void *retval )
3226 {
3227 CONTEXT context;
3228 RtlUnwindEx( frame, target_ip, rec, retval, &context, NULL );
3229 }
3230
3231
3232 /*******************************************************************
3233 * _local_unwind (NTDLL.@)
3234 */
3235 void WINAPI _local_unwind( void *frame, void *target_ip )
3236 {
3237 CONTEXT context;
3238 RtlUnwindEx( frame, target_ip, NULL, NULL, &context, NULL );
3239 }
3240
3241
3242 /*******************************************************************
3243 * __C_specific_handler (NTDLL.@)
3244 */
3245 EXCEPTION_DISPOSITION WINAPI __C_specific_handler( EXCEPTION_RECORD *rec,
3246 ULONG64 frame,
3247 CONTEXT *context,
3248 struct _DISPATCHER_CONTEXT *dispatch )
3249 {
3250 SCOPE_TABLE *table = dispatch->HandlerData;
3251 ULONG i;
3252
3253 TRACE( "%p %lx %p %p\n", rec, frame, context, dispatch );
3254 if (TRACE_ON(seh)) dump_scope_table( dispatch->ImageBase, table );
3255
3256 if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)) /* FIXME */
3257 return ExceptionContinueSearch;
3258
3259 for (i = 0; i < table->Count; i++)
3260 {
3261 if (context->Rip >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
3262 context->Rip < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
3263 {
3264 if (!table->ScopeRecord[i].JumpTarget) continue;
3265 if (table->ScopeRecord[i].HandlerAddress != EXCEPTION_EXECUTE_HANDLER)
3266 {
3267 EXCEPTION_POINTERS ptrs;
3268 PC_LANGUAGE_EXCEPTION_HANDLER filter;
3269
3270 filter = (PC_LANGUAGE_EXCEPTION_HANDLER)(dispatch->ImageBase + table->ScopeRecord[i].HandlerAddress);
3271 ptrs.ExceptionRecord = rec;
3272 ptrs.ContextRecord = context;
3273 TRACE( "calling filter %p ptrs %p frame %lx\n", filter, &ptrs, frame );
3274 switch (filter( &ptrs, frame ))
3275 {
3276 case EXCEPTION_EXECUTE_HANDLER:
3277 break;
3278 case EXCEPTION_CONTINUE_SEARCH:
3279 continue;
3280 case EXCEPTION_CONTINUE_EXECUTION:
3281 return ExceptionContinueExecution;
3282 }
3283 }
3284 TRACE( "unwinding to target %lx\n", dispatch->ImageBase + table->ScopeRecord[i].JumpTarget );
3285 RtlUnwindEx( (void *)frame, (char *)dispatch->ImageBase + table->ScopeRecord[i].JumpTarget,
3286 rec, 0, context, dispatch->HistoryTable );
3287 }
3288 }
3289 return ExceptionContinueSearch;
3290 }
3291
3292
3293 /*******************************************************************
3294 * NtRaiseException (NTDLL.@)
3295 */
3296 NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
3297 {
3298 NTSTATUS status = raise_exception( rec, context, first_chance );
3299 if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
3300 return status;
3301 }
3302
3303
3304 /***********************************************************************
3305 * RtlRaiseException (NTDLL.@)
3306 */
3307 void WINAPI __regs_RtlRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context )
3308 {
3309 NTSTATUS status;
3310
3311 rec->ExceptionAddress = (void *)context->Rip;
3312 status = raise_exception( rec, context, TRUE );
3313 if (status != STATUS_SUCCESS) raise_status( status, rec );
3314 }
3315 __ASM_GLOBAL_FUNC( RtlRaiseException,
3316 "movq %rcx,8(%rsp)\n\t"
3317 "sub $0x4f8,%rsp\n\t"
3318 __ASM_CFI(".cfi_adjust_cfa_offset 0x4f8\n\t")
3319 "leaq 0x20(%rsp),%rcx\n\t"
3320 "call " __ASM_NAME("RtlCaptureContext") "\n\t"
3321 "leaq 0x20(%rsp),%rdx\n\t" /* context pointer */
3322 "movq 0x4f8(%rsp),%rax\n\t" /* return address */
3323 "movq %rax,0xf8(%rdx)\n\t" /* context->Rip */
3324 "leaq 0x500(%rsp),%rax\n\t" /* orig stack pointer */
3325 "movq %rax,0x98(%rdx)\n\t" /* context->Rsp */
3326 "movq (%rax),%rcx\n\t" /* original first parameter */
3327 "movq %rcx,0x80(%rdx)\n\t" /* context->Rcx */
3328 "call " __ASM_NAME("__regs_RtlRaiseException") "\n\t"
3329 "leaq 0x20(%rsp),%rdi\n\t" /* context pointer */
3330 "call " __ASM_NAME("set_cpu_context") /* does not return */ );
3331
3332
3333 /*************************************************************************
3334 * RtlCaptureStackBackTrace (NTDLL.@)
3335 */
3336 USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
3337 {
3338 FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
3339 return 0;
3340 }
3341
3342
3343 /***********************************************************************
3344 * call_thread_func
3345 */
3346 void call_thread_func( LPTHREAD_START_ROUTINE entry, void *arg, void *frame )
3347 {
3348 ntdll_get_thread_data()->exit_frame = frame;
3349 __TRY
3350 {
3351 RtlExitUserThread( entry( arg ));
3352 }
3353 __EXCEPT(unhandled_exception_filter)
3354 {
3355 NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
3356 }
3357 __ENDTRY
3358 abort(); /* should not be reached */
3359 }
3360
3361 extern void DECLSPEC_NORETURN call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg );
3362 __ASM_GLOBAL_FUNC( call_thread_entry_point,
3363 "subq $56,%rsp\n\t"
3364 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3365 "movq %rbp,48(%rsp)\n\t"
3366 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3367 "movq %rbx,40(%rsp)\n\t"
3368 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3369 "movq %r12,32(%rsp)\n\t"
3370 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3371 "movq %r13,24(%rsp)\n\t"
3372 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3373 "movq %r14,16(%rsp)\n\t"
3374 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3375 "movq %r15,8(%rsp)\n\t"
3376 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3377 "movq %rsp,%rdx\n\t"
3378 "call " __ASM_NAME("call_thread_func") );
3379
3380 extern void DECLSPEC_NORETURN call_thread_exit_func( int status, void (*func)(int), void *frame );
3381 __ASM_GLOBAL_FUNC( call_thread_exit_func,
3382 "movq %rdx,%rsp\n\t"
3383 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3384 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3385 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3386 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3387 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3388 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3389 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3390 "call *%rsi" );
3391
3392 /***********************************************************************
3393 * RtlExitUserThread (NTDLL.@)
3394 */
3395 void WINAPI RtlExitUserThread( ULONG status )
3396 {
3397 if (!ntdll_get_thread_data()->exit_frame) exit_thread( status );
3398 call_thread_exit_func( status, exit_thread, ntdll_get_thread_data()->exit_frame );
3399 }
3400
3401 /***********************************************************************
3402 * abort_thread
3403 */
3404 void abort_thread( int status )
3405 {
3406 if (!ntdll_get_thread_data()->exit_frame) terminate_thread( status );
3407 call_thread_exit_func( status, terminate_thread, ntdll_get_thread_data()->exit_frame );
3408 }
3409
3410 /**********************************************************************
3411 * __wine_enter_vm86 (NTDLL.@)
3412 */
3413 void __wine_enter_vm86( CONTEXT *context )
3414 {
3415 MESSAGE("vm86 mode not supported on this platform\n");
3416 }
3417
3418 /**********************************************************************
3419 * DbgBreakPoint (NTDLL.@)
3420 */
3421 __ASM_STDCALL_FUNC( DbgBreakPoint, 0, "int $3; ret")
3422
3423 /**********************************************************************
3424 * DbgUserBreakPoint (NTDLL.@)
3425 */
3426 __ASM_STDCALL_FUNC( DbgUserBreakPoint, 0, "int $3; ret")
3427
3428 #endif /* __x86_64__ */
Windows API implementation