2 * x86-64 signal handling routines
4 * Copyright 1999, 2005 Alexandre Julliard
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.
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.
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
24 #include "wine/port.h"
31 #include <sys/types.h>
35 #ifdef HAVE_MACHINE_SYSARCH_H
36 # include <machine/sysarch.h>
38 #ifdef HAVE_SYS_PARAM_H
39 # include <sys/param.h>
44 # ifdef HAVE_SYS_SYSCALL_H
45 # include <sys/syscall.h>
48 #ifdef HAVE_SYS_SIGNAL_H
49 # include <sys/signal.h>
51 #ifdef HAVE_SYS_UCONTEXT_H
52 # include <sys/ucontext.h>
54 #ifdef HAVE_LIBUNWIND_H
55 # define UNW_LOCAL_ONLY
56 # include <libunwind.h>
59 #define NONAMELESSUNION
60 #define NONAMELESSSTRUCT
62 #define WIN32_NO_STATUS
65 #include "wine/library.h"
66 #include "wine/exception.h"
67 #include "wine/list.h"
68 #include "ntdll_misc.h"
69 #include "wine/debug.h"
71 #ifdef HAVE_VALGRIND_MEMCHECK_H
72 #include <valgrind/memcheck.h>
75 WINE_DEFAULT_DEBUG_CHANNEL(seh
);
76 WINE_DECLARE_DEBUG_CHANNEL(relay
);
78 struct _DISPATCHER_CONTEXT
;
80 typedef LONG (WINAPI
*PC_LANGUAGE_EXCEPTION_HANDLER
)( EXCEPTION_POINTERS
*ptrs
, ULONG64 frame
);
81 typedef EXCEPTION_DISPOSITION (WINAPI
*PEXCEPTION_ROUTINE
)( EXCEPTION_RECORD
*rec
,
84 struct _DISPATCHER_CONTEXT
*dispatch
);
85 typedef void (WINAPI
*TERMINATION_HANDLER
)( ULONG flags
, ULONG64 frame
);
87 typedef struct _DISPATCHER_CONTEXT
91 PRUNTIME_FUNCTION FunctionEntry
;
92 ULONG64 EstablisherFrame
;
94 PCONTEXT ContextRecord
;
95 PEXCEPTION_ROUTINE LanguageHandler
;
97 PUNWIND_HISTORY_TABLE HistoryTable
;
99 } DISPATCHER_CONTEXT
, *PDISPATCHER_CONTEXT
;
101 typedef struct _SCOPE_TABLE
108 ULONG HandlerAddress
;
111 } SCOPE_TABLE
, *PSCOPE_TABLE
;
114 /* layering violation: the setjmp buffer is defined in msvcrt, but used by RtlUnwindEx */
115 struct MSVCRT_JUMP_BUFFER
141 /***********************************************************************
142 * signal context platform-specific definitions
146 #include <asm/prctl.h>
147 static inline int arch_prctl( int func
, void *ptr
) { return syscall( __NR_arch_prctl
, func
, ptr
); }
149 #define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
150 #define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
151 #define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
152 #define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
153 #define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
154 #define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
155 #define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
156 #define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
157 #define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
158 #define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
159 #define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
160 #define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
161 #define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
162 #define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
163 #define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
165 #define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
166 #define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
167 #define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
169 #define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
170 #define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
171 #define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
172 #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
173 #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
175 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
177 #elif defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
179 #define RAX_sig(context) ((context)->uc_mcontext.mc_rax)
180 #define RBX_sig(context) ((context)->uc_mcontext.mc_rbx)
181 #define RCX_sig(context) ((context)->uc_mcontext.mc_rcx)
182 #define RDX_sig(context) ((context)->uc_mcontext.mc_rdx)
183 #define RSI_sig(context) ((context)->uc_mcontext.mc_rsi)
184 #define RDI_sig(context) ((context)->uc_mcontext.mc_rdi)
185 #define RBP_sig(context) ((context)->uc_mcontext.mc_rbp)
186 #define R8_sig(context) ((context)->uc_mcontext.mc_r8)
187 #define R9_sig(context) ((context)->uc_mcontext.mc_r9)
188 #define R10_sig(context) ((context)->uc_mcontext.mc_r10)
189 #define R11_sig(context) ((context)->uc_mcontext.mc_r11)
190 #define R12_sig(context) ((context)->uc_mcontext.mc_r12)
191 #define R13_sig(context) ((context)->uc_mcontext.mc_r13)
192 #define R14_sig(context) ((context)->uc_mcontext.mc_r14)
193 #define R15_sig(context) ((context)->uc_mcontext.mc_r15)
195 #define CS_sig(context) ((context)->uc_mcontext.mc_cs)
196 #define DS_sig(context) ((context)->uc_mcontext.mc_ds)
197 #define ES_sig(context) ((context)->uc_mcontext.mc_es)
198 #define FS_sig(context) ((context)->uc_mcontext.mc_fs)
199 #define GS_sig(context) ((context)->uc_mcontext.mc_gs)
200 #define SS_sig(context) ((context)->uc_mcontext.mc_ss)
202 #define EFL_sig(context) ((context)->uc_mcontext.mc_rflags)
204 #define RIP_sig(context) ((context)->uc_mcontext.mc_rip)
205 #define RSP_sig(context) ((context)->uc_mcontext.mc_rsp)
206 #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
207 #define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
209 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.mc_fpstate))
211 #elif defined(__NetBSD__)
213 #define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
214 #define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
215 #define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
216 #define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
217 #define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
218 #define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
219 #define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
220 #define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
221 #define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
222 #define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
223 #define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
224 #define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
225 #define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
226 #define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
227 #define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
229 #define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
230 #define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
231 #define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
232 #define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
233 #define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
234 #define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
236 #define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
238 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
239 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
241 #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
242 #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
244 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
245 #elif defined (__APPLE__)
246 #define RAX_sig(context) ((context)->uc_mcontext->__ss.__rax)
247 #define RBX_sig(context) ((context)->uc_mcontext->__ss.__rbx)
248 #define RCX_sig(context) ((context)->uc_mcontext->__ss.__rcx)
249 #define RDX_sig(context) ((context)->uc_mcontext->__ss.__rdx)
250 #define RSI_sig(context) ((context)->uc_mcontext->__ss.__rsi)
251 #define RDI_sig(context) ((context)->uc_mcontext->__ss.__rdi)
252 #define RBP_sig(context) ((context)->uc_mcontext->__ss.__rbp)
253 #define R8_sig(context) ((context)->uc_mcontext->__ss.__r8)
254 #define R9_sig(context) ((context)->uc_mcontext->__ss.__r9)
255 #define R10_sig(context) ((context)->uc_mcontext->__ss.__r10)
256 #define R11_sig(context) ((context)->uc_mcontext->__ss.__r11)
257 #define R12_sig(context) ((context)->uc_mcontext->__ss.__r12)
258 #define R13_sig(context) ((context)->uc_mcontext->__ss.__r13)
259 #define R14_sig(context) ((context)->uc_mcontext->__ss.__r14)
260 #define R15_sig(context) ((context)->uc_mcontext->__ss.__r15)
262 #define CS_sig(context) ((context)->uc_mcontext->__ss.__cs)
263 #define FS_sig(context) ((context)->uc_mcontext->__ss.__fs)
264 #define GS_sig(context) ((context)->uc_mcontext->__ss.__gs)
266 #define EFL_sig(context) ((context)->uc_mcontext->__ss.__rflags)
268 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rip))
269 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rsp))
271 #define TRAP_sig(context) ((context)->uc_mcontext->__es.__trapno)
272 #define ERROR_sig(context) ((context)->uc_mcontext->__es.__err)
274 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)&(context)->uc_mcontext->__fs.__fpu_fcw)
277 #error You must define the signal context functions for your platform
282 TRAP_x86_UNKNOWN
= -1, /* Unknown fault (TRAP_sig not defined) */
283 TRAP_x86_DIVIDE
= 0, /* Division by zero exception */
284 TRAP_x86_TRCTRAP
= 1, /* Single-step exception */
285 TRAP_x86_NMI
= 2, /* NMI interrupt */
286 TRAP_x86_BPTFLT
= 3, /* Breakpoint exception */
287 TRAP_x86_OFLOW
= 4, /* Overflow exception */
288 TRAP_x86_BOUND
= 5, /* Bound range exception */
289 TRAP_x86_PRIVINFLT
= 6, /* Invalid opcode exception */
290 TRAP_x86_DNA
= 7, /* Device not available exception */
291 TRAP_x86_DOUBLEFLT
= 8, /* Double fault exception */
292 TRAP_x86_FPOPFLT
= 9, /* Coprocessor segment overrun */
293 TRAP_x86_TSSFLT
= 10, /* Invalid TSS exception */
294 TRAP_x86_SEGNPFLT
= 11, /* Segment not present exception */
295 TRAP_x86_STKFLT
= 12, /* Stack fault */
296 TRAP_x86_PROTFLT
= 13, /* General protection fault */
297 TRAP_x86_PAGEFLT
= 14, /* Page fault */
298 TRAP_x86_ARITHTRAP
= 16, /* Floating point exception */
299 TRAP_x86_ALIGNFLT
= 17, /* Alignment check exception */
300 TRAP_x86_MCHK
= 18, /* Machine check exception */
301 TRAP_x86_CACHEFLT
= 19 /* Cache flush exception */
304 static const size_t teb_size
= 0x2000; /* we reserve two pages for the TEB */
305 static size_t signal_stack_size
;
307 typedef void (*raise_func
)( EXCEPTION_RECORD
*rec
, CONTEXT
*context
);
308 typedef int (*wine_signal_handler
)(unsigned int sig
);
310 static wine_signal_handler handlers
[256];
312 struct amd64_thread_data
314 DWORD_PTR dr0
; /* debug registers */
320 void *exit_frame
; /* exit frame pointer */
323 C_ASSERT( sizeof(struct amd64_thread_data
) <= sizeof(((TEB
*)0)->SystemReserved2
) );
324 C_ASSERT( offsetof( TEB
, SystemReserved2
) + offsetof( struct amd64_thread_data
, exit_frame
) == 0x330 );
326 static inline struct amd64_thread_data
*amd64_thread_data(void)
328 return (struct amd64_thread_data
*)NtCurrentTeb()->SystemReserved2
;
331 /***********************************************************************
332 * Dynamic unwind table
335 struct dynamic_unwind_entry
339 /* memory region which matches this entry */
344 RUNTIME_FUNCTION
*table
;
347 /* user defined callback */
348 PGET_RUNTIME_FUNCTION_CALLBACK callback
;
352 static struct list dynamic_unwind_list
= LIST_INIT(dynamic_unwind_list
);
354 static RTL_CRITICAL_SECTION dynamic_unwind_section
;
355 static RTL_CRITICAL_SECTION_DEBUG dynamic_unwind_debug
=
357 0, 0, &dynamic_unwind_section
,
358 { &dynamic_unwind_debug
.ProcessLocksList
, &dynamic_unwind_debug
.ProcessLocksList
},
359 0, 0, { (DWORD_PTR
)(__FILE__
": dynamic_unwind_section") }
361 static RTL_CRITICAL_SECTION dynamic_unwind_section
= { &dynamic_unwind_debug
, -1, 0, 0, 0, 0 };
363 /***********************************************************************
364 * Definitions for Win32 unwind tables
369 RUNTIME_FUNCTION chain
;
387 BYTE frame_offset
: 4;
388 struct opcode opcodes
[1]; /* info->count entries */
389 /* followed by handler_data */
392 #define UWOP_PUSH_NONVOL 0
393 #define UWOP_ALLOC_LARGE 1
394 #define UWOP_ALLOC_SMALL 2
395 #define UWOP_SET_FPREG 3
396 #define UWOP_SAVE_NONVOL 4
397 #define UWOP_SAVE_NONVOL_FAR 5
398 #define UWOP_SAVE_XMM128 8
399 #define UWOP_SAVE_XMM128_FAR 9
400 #define UWOP_PUSH_MACHFRAME 10
402 static void dump_unwind_info( ULONG64 base
, RUNTIME_FUNCTION
*function
)
404 static const char * const reg_names
[16] =
405 { "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
406 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" };
408 union handler_data
*handler_data
;
409 struct UNWIND_INFO
*info
;
410 unsigned int i
, count
;
412 TRACE( "**** func %x-%x\n", function
->BeginAddress
, function
->EndAddress
);
415 if (function
->UnwindData
& 1)
417 RUNTIME_FUNCTION
*next
= (RUNTIME_FUNCTION
*)((char *)base
+ (function
->UnwindData
& ~1));
418 TRACE( "unwind info for function %p-%p chained to function %p-%p\n",
419 (char *)base
+ function
->BeginAddress
, (char *)base
+ function
->EndAddress
,
420 (char *)base
+ next
->BeginAddress
, (char *)base
+ next
->EndAddress
);
424 info
= (struct UNWIND_INFO
*)((char *)base
+ function
->UnwindData
);
426 TRACE( "unwind info at %p flags %x prolog 0x%x bytes function %p-%p\n",
427 info
, info
->flags
, info
->prolog
,
428 (char *)base
+ function
->BeginAddress
, (char *)base
+ function
->EndAddress
);
431 TRACE( " frame register %s offset 0x%x(%%rsp)\n",
432 reg_names
[info
->frame_reg
], info
->frame_offset
* 16 );
434 for (i
= 0; i
< info
->count
; i
++)
436 TRACE( " 0x%x: ", info
->opcodes
[i
].offset
);
437 switch (info
->opcodes
[i
].code
)
439 case UWOP_PUSH_NONVOL
:
440 TRACE( "pushq %%%s\n", reg_names
[info
->opcodes
[i
].info
] );
442 case UWOP_ALLOC_LARGE
:
443 if (info
->opcodes
[i
].info
)
445 count
= *(DWORD
*)&info
->opcodes
[i
+1];
450 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
453 TRACE( "subq $0x%x,%%rsp\n", count
);
455 case UWOP_ALLOC_SMALL
:
456 count
= (info
->opcodes
[i
].info
+ 1) * 8;
457 TRACE( "subq $0x%x,%%rsp\n", count
);
460 TRACE( "leaq 0x%x(%%rsp),%s\n",
461 info
->frame_offset
* 16, reg_names
[info
->frame_reg
] );
463 case UWOP_SAVE_NONVOL
:
464 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
465 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names
[info
->opcodes
[i
].info
], count
);
468 case UWOP_SAVE_NONVOL_FAR
:
469 count
= *(DWORD
*)&info
->opcodes
[i
+1];
470 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names
[info
->opcodes
[i
].info
], count
);
473 case UWOP_SAVE_XMM128
:
474 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 16;
475 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info
->opcodes
[i
].info
, count
);
478 case UWOP_SAVE_XMM128_FAR
:
479 count
= *(DWORD
*)&info
->opcodes
[i
+1];
480 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info
->opcodes
[i
].info
, count
);
483 case UWOP_PUSH_MACHFRAME
:
484 TRACE( "PUSH_MACHFRAME %u\n", info
->opcodes
[i
].info
);
487 FIXME( "unknown code %u\n", info
->opcodes
[i
].code
);
492 handler_data
= (union handler_data
*)&info
->opcodes
[(info
->count
+ 1) & ~1];
493 if (info
->flags
& UNW_FLAG_CHAININFO
)
495 TRACE( " chained to function %p-%p\n",
496 (char *)base
+ handler_data
->chain
.BeginAddress
,
497 (char *)base
+ handler_data
->chain
.EndAddress
);
498 function
= &handler_data
->chain
;
501 if (info
->flags
& (UNW_FLAG_EHANDLER
| UNW_FLAG_UHANDLER
))
502 TRACE( " handler %p data at %p\n",
503 (char *)base
+ handler_data
->handler
, &handler_data
->handler
+ 1 );
508 static void dump_scope_table( ULONG64 base
, const SCOPE_TABLE
*table
)
512 TRACE( "scope table at %p\n", table
);
513 for (i
= 0; i
< table
->Count
; i
++)
514 TRACE( " %u: %lx-%lx handler %lx target %lx\n", i
,
515 base
+ table
->ScopeRecord
[i
].BeginAddress
,
516 base
+ table
->ScopeRecord
[i
].EndAddress
,
517 base
+ table
->ScopeRecord
[i
].HandlerAddress
,
518 base
+ table
->ScopeRecord
[i
].JumpTarget
);
522 /***********************************************************************
523 * Definitions for Dwarf unwind tables
526 enum dwarf_call_frame_info
528 DW_CFA_advance_loc
= 0x40,
529 DW_CFA_offset
= 0x80,
530 DW_CFA_restore
= 0xc0,
532 DW_CFA_set_loc
= 0x01,
533 DW_CFA_advance_loc1
= 0x02,
534 DW_CFA_advance_loc2
= 0x03,
535 DW_CFA_advance_loc4
= 0x04,
536 DW_CFA_offset_extended
= 0x05,
537 DW_CFA_restore_extended
= 0x06,
538 DW_CFA_undefined
= 0x07,
539 DW_CFA_same_value
= 0x08,
540 DW_CFA_register
= 0x09,
541 DW_CFA_remember_state
= 0x0a,
542 DW_CFA_restore_state
= 0x0b,
543 DW_CFA_def_cfa
= 0x0c,
544 DW_CFA_def_cfa_register
= 0x0d,
545 DW_CFA_def_cfa_offset
= 0x0e,
546 DW_CFA_def_cfa_expression
= 0x0f,
547 DW_CFA_expression
= 0x10,
548 DW_CFA_offset_extended_sf
= 0x11,
549 DW_CFA_def_cfa_sf
= 0x12,
550 DW_CFA_def_cfa_offset_sf
= 0x13,
551 DW_CFA_val_offset
= 0x14,
552 DW_CFA_val_offset_sf
= 0x15,
553 DW_CFA_val_expression
= 0x16,
560 DW_OP_const1u
= 0x08,
561 DW_OP_const1s
= 0x09,
562 DW_OP_const2u
= 0x0a,
563 DW_OP_const2s
= 0x0b,
564 DW_OP_const4u
= 0x0c,
565 DW_OP_const4s
= 0x0d,
566 DW_OP_const8u
= 0x0e,
567 DW_OP_const8s
= 0x0f,
587 DW_OP_plus_uconst
= 0x23,
700 DW_OP_deref_size
= 0x94,
701 DW_OP_xderef_size
= 0x95,
703 DW_OP_push_object_address
= 0x97,
706 DW_OP_call_ref
= 0x9a,
707 DW_OP_form_tls_address
= 0x9b,
708 DW_OP_call_frame_cfa
= 0x9c,
709 DW_OP_bit_piece
= 0x9d,
710 DW_OP_lo_user
= 0xe0,
711 DW_OP_hi_user
= 0xff,
712 DW_OP_GNU_push_tls_address
= 0xe0,
713 DW_OP_GNU_uninit
= 0xf0,
714 DW_OP_GNU_encoded_addr
= 0xf1,
717 #define DW_EH_PE_native 0x00
718 #define DW_EH_PE_leb128 0x01
719 #define DW_EH_PE_data2 0x02
720 #define DW_EH_PE_data4 0x03
721 #define DW_EH_PE_data8 0x04
722 #define DW_EH_PE_signed 0x08
723 #define DW_EH_PE_abs 0x00
724 #define DW_EH_PE_pcrel 0x10
725 #define DW_EH_PE_textrel 0x20
726 #define DW_EH_PE_datarel 0x30
727 #define DW_EH_PE_funcrel 0x40
728 #define DW_EH_PE_aligned 0x50
729 #define DW_EH_PE_indirect 0x80
730 #define DW_EH_PE_omit 0xff
732 struct dwarf_eh_bases
743 unsigned char version
;
744 unsigned char augmentation
[1];
750 unsigned int cie_offset
;
753 extern const struct dwarf_fde
*_Unwind_Find_FDE (void *, struct dwarf_eh_bases
*);
755 static unsigned char dwarf_get_u1( const unsigned char **p
)
760 static unsigned short dwarf_get_u2( const unsigned char **p
)
762 unsigned int ret
= (*p
)[0] | ((*p
)[1] << 8);
767 static unsigned int dwarf_get_u4( const unsigned char **p
)
769 unsigned int ret
= (*p
)[0] | ((*p
)[1] << 8) | ((*p
)[2] << 16) | ((*p
)[3] << 24);
774 static ULONG64
dwarf_get_u8( const unsigned char **p
)
776 ULONG64 low
= dwarf_get_u4( p
);
777 ULONG64 high
= dwarf_get_u4( p
);
778 return low
| (high
<< 32);
781 static ULONG_PTR
dwarf_get_uleb128( const unsigned char **p
)
784 unsigned int shift
= 0;
790 ret
|= (ULONG_PTR
)(byte
& 0x7f) << shift
;
793 } while (byte
& 0x80);
797 static LONG_PTR
dwarf_get_sleb128( const unsigned char **p
)
800 unsigned int shift
= 0;
806 ret
|= (ULONG_PTR
)(byte
& 0x7f) << shift
;
809 } while (byte
& 0x80);
811 if ((shift
< 8 * sizeof(ret
)) && (byte
& 0x40)) ret
|= -((ULONG_PTR
)1 << shift
);
815 static ULONG_PTR
dwarf_get_ptr( const unsigned char **p
, unsigned char encoding
)
819 if (encoding
== DW_EH_PE_omit
) return 0;
821 switch (encoding
& 0xf0)
827 base
= (ULONG_PTR
)*p
;
830 FIXME( "unsupported encoding %02x\n", encoding
);
834 switch (encoding
& 0x0f)
836 case DW_EH_PE_native
:
837 return base
+ dwarf_get_u8( p
);
838 case DW_EH_PE_leb128
:
839 return base
+ dwarf_get_uleb128( p
);
841 return base
+ dwarf_get_u2( p
);
843 return base
+ dwarf_get_u4( p
);
845 return base
+ dwarf_get_u8( p
);
846 case DW_EH_PE_signed
|DW_EH_PE_leb128
:
847 return base
+ dwarf_get_sleb128( p
);
848 case DW_EH_PE_signed
|DW_EH_PE_data2
:
849 return base
+ (signed short)dwarf_get_u2( p
);
850 case DW_EH_PE_signed
|DW_EH_PE_data4
:
851 return base
+ (signed int)dwarf_get_u4( p
);
852 case DW_EH_PE_signed
|DW_EH_PE_data8
:
853 return base
+ (LONG64
)dwarf_get_u8( p
);
855 FIXME( "unsupported encoding %02x\n", encoding
);
862 RULE_UNSET
, /* not set at all */
863 RULE_UNDEFINED
, /* undefined value */
864 RULE_SAME
, /* same value as previous frame */
865 RULE_CFA_OFFSET
, /* stored at cfa offset */
866 RULE_OTHER_REG
, /* stored in other register */
867 RULE_EXPRESSION
, /* address specified by expression */
868 RULE_VAL_EXPRESSION
/* value specified by expression */
871 #define NB_FRAME_REGS 41
872 #define MAX_SAVED_STATES 16
876 ULONG_PTR cfa_offset
;
877 unsigned char cfa_reg
;
878 enum reg_rule cfa_rule
;
879 enum reg_rule rules
[NB_FRAME_REGS
];
880 ULONG64 regs
[NB_FRAME_REGS
];
886 ULONG_PTR code_align
;
888 unsigned char retaddr_reg
;
889 unsigned char fde_encoding
;
890 unsigned char signal_frame
;
891 unsigned char state_sp
;
892 struct frame_state state
;
893 struct frame_state
*state_stack
;
896 static const char *dwarf_reg_names
[NB_FRAME_REGS
] =
898 /* 0-7 */ "%rax", "%rdx", "%rcx", "%rbx", "%rsi", "%rdi", "%rbp", "%rsp",
899 /* 8-16 */ "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rip",
900 /* 17-24 */ "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",
901 /* 25-32 */ "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15",
902 /* 33-40 */ "%st0", "%st1", "%st2", "%st3", "%st4", "%st5", "%st6", "%st7"
905 static BOOL
valid_reg( ULONG_PTR reg
)
907 if (reg
>= NB_FRAME_REGS
) FIXME( "unsupported reg %lx\n", reg
);
908 return (reg
< NB_FRAME_REGS
);
911 static void execute_cfa_instructions( const unsigned char *ptr
, const unsigned char *end
,
912 ULONG_PTR last_ip
, struct frame_info
*info
)
914 while (ptr
< end
&& info
->ip
< last_ip
+ info
->signal_frame
)
916 enum dwarf_call_frame_info op
= *ptr
++;
922 case DW_CFA_advance_loc
:
924 ULONG_PTR offset
= (op
& 0x3f) * info
->code_align
;
925 TRACE( "%lx: DW_CFA_advance_loc %lu\n", info
->ip
, offset
);
931 ULONG_PTR reg
= op
& 0x3f;
932 LONG_PTR offset
= dwarf_get_uleb128( &ptr
) * info
->data_align
;
933 if (!valid_reg( reg
)) break;
934 TRACE( "%lx: DW_CFA_offset %s, %ld\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
935 info
->state
.regs
[reg
] = offset
;
936 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
941 ULONG_PTR reg
= op
& 0x3f;
942 if (!valid_reg( reg
)) break;
943 TRACE( "%lx: DW_CFA_restore %s\n", info
->ip
, dwarf_reg_names
[reg
] );
944 info
->state
.rules
[reg
] = RULE_UNSET
;
955 ULONG_PTR loc
= dwarf_get_ptr( &ptr
, info
->fde_encoding
);
956 TRACE( "%lx: DW_CFA_set_loc %lx\n", info
->ip
, loc
);
960 case DW_CFA_advance_loc1
:
962 ULONG_PTR offset
= *ptr
++ * info
->code_align
;
963 TRACE( "%lx: DW_CFA_advance_loc1 %lu\n", info
->ip
, offset
);
967 case DW_CFA_advance_loc2
:
969 ULONG_PTR offset
= dwarf_get_u2( &ptr
) * info
->code_align
;
970 TRACE( "%lx: DW_CFA_advance_loc2 %lu\n", info
->ip
, offset
);
974 case DW_CFA_advance_loc4
:
976 ULONG_PTR offset
= dwarf_get_u4( &ptr
) * info
->code_align
;
977 TRACE( "%lx: DW_CFA_advance_loc4 %lu\n", info
->ip
, offset
);
981 case DW_CFA_offset_extended
:
982 case DW_CFA_offset_extended_sf
:
984 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
985 LONG_PTR offset
= (op
== DW_CFA_offset_extended
) ? dwarf_get_uleb128( &ptr
) * info
->data_align
986 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
987 if (!valid_reg( reg
)) break;
988 TRACE( "%lx: DW_CFA_offset_extended %s, %ld\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
989 info
->state
.regs
[reg
] = offset
;
990 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
993 case DW_CFA_restore_extended
:
995 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
996 if (!valid_reg( reg
)) break;
997 TRACE( "%lx: DW_CFA_restore_extended %s\n", info
->ip
, dwarf_reg_names
[reg
] );
998 info
->state
.rules
[reg
] = RULE_UNSET
;
1001 case DW_CFA_undefined
:
1003 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1004 if (!valid_reg( reg
)) break;
1005 TRACE( "%lx: DW_CFA_undefined %s\n", info
->ip
, dwarf_reg_names
[reg
] );
1006 info
->state
.rules
[reg
] = RULE_UNDEFINED
;
1009 case DW_CFA_same_value
:
1011 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1012 if (!valid_reg( reg
)) break;
1013 TRACE( "%lx: DW_CFA_same_value %s\n", info
->ip
, dwarf_reg_names
[reg
] );
1014 info
->state
.regs
[reg
] = reg
;
1015 info
->state
.rules
[reg
] = RULE_SAME
;
1018 case DW_CFA_register
:
1020 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1021 ULONG_PTR reg2
= dwarf_get_uleb128( &ptr
);
1022 if (!valid_reg( reg
) || !valid_reg( reg2
)) break;
1023 TRACE( "%lx: DW_CFA_register %s == %s\n", info
->ip
, dwarf_reg_names
[reg
], dwarf_reg_names
[reg2
] );
1024 info
->state
.regs
[reg
] = reg2
;
1025 info
->state
.rules
[reg
] = RULE_OTHER_REG
;
1028 case DW_CFA_remember_state
:
1029 TRACE( "%lx: DW_CFA_remember_state\n", info
->ip
);
1030 if (info
->state_sp
>= MAX_SAVED_STATES
)
1031 FIXME( "%lx: DW_CFA_remember_state too many nested saves\n", info
->ip
);
1033 info
->state_stack
[info
->state_sp
++] = info
->state
;
1035 case DW_CFA_restore_state
:
1036 TRACE( "%lx: DW_CFA_restore_state\n", info
->ip
);
1037 if (!info
->state_sp
)
1038 FIXME( "%lx: DW_CFA_restore_state without corresponding save\n", info
->ip
);
1040 info
->state
= info
->state_stack
[--info
->state_sp
];
1042 case DW_CFA_def_cfa
:
1043 case DW_CFA_def_cfa_sf
:
1045 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1046 ULONG_PTR offset
= (op
== DW_CFA_def_cfa
) ? dwarf_get_uleb128( &ptr
)
1047 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
1048 if (!valid_reg( reg
)) break;
1049 TRACE( "%lx: DW_CFA_def_cfa %s, %lu\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
1050 info
->state
.cfa_reg
= reg
;
1051 info
->state
.cfa_offset
= offset
;
1052 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1055 case DW_CFA_def_cfa_register
:
1057 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1058 if (!valid_reg( reg
)) break;
1059 TRACE( "%lx: DW_CFA_def_cfa_register %s\n", info
->ip
, dwarf_reg_names
[reg
] );
1060 info
->state
.cfa_reg
= reg
;
1061 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1064 case DW_CFA_def_cfa_offset
:
1065 case DW_CFA_def_cfa_offset_sf
:
1067 ULONG_PTR offset
= (op
== DW_CFA_def_cfa_offset
) ? dwarf_get_uleb128( &ptr
)
1068 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
1069 TRACE( "%lx: DW_CFA_def_cfa_offset %lu\n", info
->ip
, offset
);
1070 info
->state
.cfa_offset
= offset
;
1071 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1074 case DW_CFA_def_cfa_expression
:
1076 ULONG_PTR expr
= (ULONG_PTR
)ptr
;
1077 ULONG_PTR len
= dwarf_get_uleb128( &ptr
);
1078 TRACE( "%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info
->ip
, expr
, expr
+len
);
1079 info
->state
.cfa_offset
= expr
;
1080 info
->state
.cfa_rule
= RULE_VAL_EXPRESSION
;
1084 case DW_CFA_expression
:
1085 case DW_CFA_val_expression
:
1087 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1088 ULONG_PTR expr
= (ULONG_PTR
)ptr
;
1089 ULONG_PTR len
= dwarf_get_uleb128( &ptr
);
1090 if (!valid_reg( reg
)) break;
1091 TRACE( "%lx: DW_CFA_%sexpression %s %lx-%lx\n",
1092 info
->ip
, (op
== DW_CFA_expression
) ? "" : "val_", dwarf_reg_names
[reg
], expr
, expr
+len
);
1093 info
->state
.regs
[reg
] = expr
;
1094 info
->state
.rules
[reg
] = (op
== DW_CFA_expression
) ? RULE_EXPRESSION
: RULE_VAL_EXPRESSION
;
1099 FIXME( "%lx: unknown CFA opcode %02x\n", info
->ip
, op
);
1105 /* retrieve a context register from its dwarf number */
1106 static void *get_context_reg( CONTEXT
*context
, ULONG_PTR dw_reg
)
1110 case 0: return &context
->Rax
;
1111 case 1: return &context
->Rdx
;
1112 case 2: return &context
->Rcx
;
1113 case 3: return &context
->Rbx
;
1114 case 4: return &context
->Rsi
;
1115 case 5: return &context
->Rdi
;
1116 case 6: return &context
->Rbp
;
1117 case 7: return &context
->Rsp
;
1118 case 8: return &context
->R8
;
1119 case 9: return &context
->R9
;
1120 case 10: return &context
->R10
;
1121 case 11: return &context
->R11
;
1122 case 12: return &context
->R12
;
1123 case 13: return &context
->R13
;
1124 case 14: return &context
->R14
;
1125 case 15: return &context
->R15
;
1126 case 16: return &context
->Rip
;
1127 case 17: return &context
->u
.s
.Xmm0
;
1128 case 18: return &context
->u
.s
.Xmm1
;
1129 case 19: return &context
->u
.s
.Xmm2
;
1130 case 20: return &context
->u
.s
.Xmm3
;
1131 case 21: return &context
->u
.s
.Xmm4
;
1132 case 22: return &context
->u
.s
.Xmm5
;
1133 case 23: return &context
->u
.s
.Xmm6
;
1134 case 24: return &context
->u
.s
.Xmm7
;
1135 case 25: return &context
->u
.s
.Xmm8
;
1136 case 26: return &context
->u
.s
.Xmm9
;
1137 case 27: return &context
->u
.s
.Xmm10
;
1138 case 28: return &context
->u
.s
.Xmm11
;
1139 case 29: return &context
->u
.s
.Xmm12
;
1140 case 30: return &context
->u
.s
.Xmm13
;
1141 case 31: return &context
->u
.s
.Xmm14
;
1142 case 32: return &context
->u
.s
.Xmm15
;
1143 case 33: return &context
->u
.s
.Legacy
[0];
1144 case 34: return &context
->u
.s
.Legacy
[1];
1145 case 35: return &context
->u
.s
.Legacy
[2];
1146 case 36: return &context
->u
.s
.Legacy
[3];
1147 case 37: return &context
->u
.s
.Legacy
[4];
1148 case 38: return &context
->u
.s
.Legacy
[5];
1149 case 39: return &context
->u
.s
.Legacy
[6];
1150 case 40: return &context
->u
.s
.Legacy
[7];
1151 default: return NULL
;
1155 /* set a context register from its dwarf number */
1156 static void set_context_reg( CONTEXT
*context
, ULONG_PTR dw_reg
, void *val
)
1160 case 0: context
->Rax
= *(ULONG64
*)val
; break;
1161 case 1: context
->Rdx
= *(ULONG64
*)val
; break;
1162 case 2: context
->Rcx
= *(ULONG64
*)val
; break;
1163 case 3: context
->Rbx
= *(ULONG64
*)val
; break;
1164 case 4: context
->Rsi
= *(ULONG64
*)val
; break;
1165 case 5: context
->Rdi
= *(ULONG64
*)val
; break;
1166 case 6: context
->Rbp
= *(ULONG64
*)val
; break;
1167 case 7: context
->Rsp
= *(ULONG64
*)val
; break;
1168 case 8: context
->R8
= *(ULONG64
*)val
; break;
1169 case 9: context
->R9
= *(ULONG64
*)val
; break;
1170 case 10: context
->R10
= *(ULONG64
*)val
; break;
1171 case 11: context
->R11
= *(ULONG64
*)val
; break;
1172 case 12: context
->R12
= *(ULONG64
*)val
; break;
1173 case 13: context
->R13
= *(ULONG64
*)val
; break;
1174 case 14: context
->R14
= *(ULONG64
*)val
; break;
1175 case 15: context
->R15
= *(ULONG64
*)val
; break;
1176 case 16: context
->Rip
= *(ULONG64
*)val
; break;
1177 case 17: memcpy( &context
->u
.s
.Xmm0
, val
, sizeof(M128A
) ); break;
1178 case 18: memcpy( &context
->u
.s
.Xmm1
, val
, sizeof(M128A
) ); break;
1179 case 19: memcpy( &context
->u
.s
.Xmm2
, val
, sizeof(M128A
) ); break;
1180 case 20: memcpy( &context
->u
.s
.Xmm3
, val
, sizeof(M128A
) ); break;
1181 case 21: memcpy( &context
->u
.s
.Xmm4
, val
, sizeof(M128A
) ); break;
1182 case 22: memcpy( &context
->u
.s
.Xmm5
, val
, sizeof(M128A
) ); break;
1183 case 23: memcpy( &context
->u
.s
.Xmm6
, val
, sizeof(M128A
) ); break;
1184 case 24: memcpy( &context
->u
.s
.Xmm7
, val
, sizeof(M128A
) ); break;
1185 case 25: memcpy( &context
->u
.s
.Xmm8
, val
, sizeof(M128A
) ); break;
1186 case 26: memcpy( &context
->u
.s
.Xmm9
, val
, sizeof(M128A
) ); break;
1187 case 27: memcpy( &context
->u
.s
.Xmm10
, val
, sizeof(M128A
) ); break;
1188 case 28: memcpy( &context
->u
.s
.Xmm11
, val
, sizeof(M128A
) ); break;
1189 case 29: memcpy( &context
->u
.s
.Xmm12
, val
, sizeof(M128A
) ); break;
1190 case 30: memcpy( &context
->u
.s
.Xmm13
, val
, sizeof(M128A
) ); break;
1191 case 31: memcpy( &context
->u
.s
.Xmm14
, val
, sizeof(M128A
) ); break;
1192 case 32: memcpy( &context
->u
.s
.Xmm15
, val
, sizeof(M128A
) ); break;
1193 case 33: memcpy( &context
->u
.s
.Legacy
[0], val
, sizeof(M128A
) ); break;
1194 case 34: memcpy( &context
->u
.s
.Legacy
[1], val
, sizeof(M128A
) ); break;
1195 case 35: memcpy( &context
->u
.s
.Legacy
[2], val
, sizeof(M128A
) ); break;
1196 case 36: memcpy( &context
->u
.s
.Legacy
[3], val
, sizeof(M128A
) ); break;
1197 case 37: memcpy( &context
->u
.s
.Legacy
[4], val
, sizeof(M128A
) ); break;
1198 case 38: memcpy( &context
->u
.s
.Legacy
[5], val
, sizeof(M128A
) ); break;
1199 case 39: memcpy( &context
->u
.s
.Legacy
[6], val
, sizeof(M128A
) ); break;
1200 case 40: memcpy( &context
->u
.s
.Legacy
[7], val
, sizeof(M128A
) ); break;
1204 static ULONG_PTR
eval_expression( const unsigned char *p
, CONTEXT
*context
)
1206 ULONG_PTR reg
, tmp
, stack
[64];
1208 ULONG_PTR len
= dwarf_get_uleb128(&p
);
1209 const unsigned char *end
= p
+ len
;
1213 unsigned char opcode
= dwarf_get_u1(&p
);
1215 if (opcode
>= DW_OP_lit0
&& opcode
<= DW_OP_lit31
)
1216 stack
[++sp
] = opcode
- DW_OP_lit0
;
1217 else if (opcode
>= DW_OP_reg0
&& opcode
<= DW_OP_reg31
)
1218 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, opcode
- DW_OP_reg0
);
1219 else if (opcode
>= DW_OP_breg0
&& opcode
<= DW_OP_breg31
)
1220 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, opcode
- DW_OP_breg0
) + dwarf_get_sleb128(&p
);
1221 else switch (opcode
)
1223 case DW_OP_nop
: break;
1224 case DW_OP_addr
: stack
[++sp
] = dwarf_get_u8(&p
); break;
1225 case DW_OP_const1u
: stack
[++sp
] = dwarf_get_u1(&p
); break;
1226 case DW_OP_const1s
: stack
[++sp
] = (signed char)dwarf_get_u1(&p
); break;
1227 case DW_OP_const2u
: stack
[++sp
] = dwarf_get_u2(&p
); break;
1228 case DW_OP_const2s
: stack
[++sp
] = (short)dwarf_get_u2(&p
); break;
1229 case DW_OP_const4u
: stack
[++sp
] = dwarf_get_u4(&p
); break;
1230 case DW_OP_const4s
: stack
[++sp
] = (signed int)dwarf_get_u4(&p
); break;
1231 case DW_OP_const8u
: stack
[++sp
] = dwarf_get_u8(&p
); break;
1232 case DW_OP_const8s
: stack
[++sp
] = (LONG_PTR
)dwarf_get_u8(&p
); break;
1233 case DW_OP_constu
: stack
[++sp
] = dwarf_get_uleb128(&p
); break;
1234 case DW_OP_consts
: stack
[++sp
] = dwarf_get_sleb128(&p
); break;
1235 case DW_OP_deref
: stack
[sp
] = *(ULONG_PTR
*)stack
[sp
]; break;
1236 case DW_OP_dup
: stack
[sp
+ 1] = stack
[sp
]; sp
++; break;
1237 case DW_OP_drop
: sp
--; break;
1238 case DW_OP_over
: stack
[sp
+ 1] = stack
[sp
- 1]; sp
++; break;
1239 case DW_OP_pick
: stack
[sp
+ 1] = stack
[sp
- dwarf_get_u1(&p
)]; sp
++; break;
1240 case DW_OP_swap
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = tmp
; break;
1241 case DW_OP_rot
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = stack
[sp
-2]; stack
[sp
-2] = tmp
; break;
1242 case DW_OP_abs
: stack
[sp
] = labs(stack
[sp
]); break;
1243 case DW_OP_neg
: stack
[sp
] = -stack
[sp
]; break;
1244 case DW_OP_not
: stack
[sp
] = ~stack
[sp
]; break;
1245 case DW_OP_and
: stack
[sp
-1] &= stack
[sp
]; sp
--; break;
1246 case DW_OP_or
: stack
[sp
-1] |= stack
[sp
]; sp
--; break;
1247 case DW_OP_minus
: stack
[sp
-1] -= stack
[sp
]; sp
--; break;
1248 case DW_OP_mul
: stack
[sp
-1] *= stack
[sp
]; sp
--; break;
1249 case DW_OP_plus
: stack
[sp
-1] += stack
[sp
]; sp
--; break;
1250 case DW_OP_xor
: stack
[sp
-1] ^= stack
[sp
]; sp
--; break;
1251 case DW_OP_shl
: stack
[sp
-1] <<= stack
[sp
]; sp
--; break;
1252 case DW_OP_shr
: stack
[sp
-1] >>= stack
[sp
]; sp
--; break;
1253 case DW_OP_plus_uconst
: stack
[sp
] += dwarf_get_uleb128(&p
); break;
1254 case DW_OP_shra
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (1 << stack
[sp
]); sp
--; break;
1255 case DW_OP_div
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (LONG_PTR
)stack
[sp
]; sp
--; break;
1256 case DW_OP_mod
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] % (LONG_PTR
)stack
[sp
]; sp
--; break;
1257 case DW_OP_ge
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] >= (LONG_PTR
)stack
[sp
]); sp
--; break;
1258 case DW_OP_gt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] > (LONG_PTR
)stack
[sp
]); sp
--; break;
1259 case DW_OP_le
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] <= (LONG_PTR
)stack
[sp
]); sp
--; break;
1260 case DW_OP_lt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] < (LONG_PTR
)stack
[sp
]); sp
--; break;
1261 case DW_OP_eq
: stack
[sp
-1] = (stack
[sp
-1] == stack
[sp
]); sp
--; break;
1262 case DW_OP_ne
: stack
[sp
-1] = (stack
[sp
-1] != stack
[sp
]); sp
--; break;
1263 case DW_OP_skip
: tmp
= (short)dwarf_get_u2(&p
); p
+= tmp
; break;
1264 case DW_OP_bra
: tmp
= (short)dwarf_get_u2(&p
); if (!stack
[sp
--]) p
+= tmp
; break;
1265 case DW_OP_GNU_encoded_addr
: tmp
= *p
++; stack
[++sp
] = dwarf_get_ptr( &p
, tmp
); break;
1266 case DW_OP_regx
: stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, dwarf_get_uleb128(&p
) ); break;
1268 reg
= dwarf_get_uleb128(&p
);
1269 tmp
= dwarf_get_sleb128(&p
);
1270 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, reg
) + tmp
;
1272 case DW_OP_deref_size
:
1275 case 1: stack
[sp
] = *(unsigned char *)stack
[sp
]; break;
1276 case 2: stack
[sp
] = *(unsigned short *)stack
[sp
]; break;
1277 case 4: stack
[sp
] = *(unsigned int *)stack
[sp
]; break;
1278 case 8: stack
[sp
] = *(ULONG_PTR
*)stack
[sp
]; break;
1282 FIXME( "unhandled opcode %02x\n", opcode
);
1288 /* apply the computed frame info to the actual context */
1289 static void apply_frame_state( CONTEXT
*context
, struct frame_state
*state
)
1292 ULONG_PTR cfa
, value
;
1293 CONTEXT new_context
= *context
;
1295 switch (state
->cfa_rule
)
1297 case RULE_EXPRESSION
:
1298 cfa
= *(ULONG_PTR
*)eval_expression( (const unsigned char *)state
->cfa_offset
, context
);
1300 case RULE_VAL_EXPRESSION
:
1301 cfa
= eval_expression( (const unsigned char *)state
->cfa_offset
, context
);
1304 cfa
= *(ULONG_PTR
*)get_context_reg( context
, state
->cfa_reg
) + state
->cfa_offset
;
1309 for (i
= 0; i
< NB_FRAME_REGS
; i
++)
1311 switch (state
->rules
[i
])
1314 case RULE_UNDEFINED
:
1317 case RULE_CFA_OFFSET
:
1318 set_context_reg( &new_context
, i
, (char *)cfa
+ state
->regs
[i
] );
1320 case RULE_OTHER_REG
:
1321 set_context_reg( &new_context
, i
, get_context_reg( context
, state
->regs
[i
] ));
1323 case RULE_EXPRESSION
:
1324 value
= eval_expression( (const unsigned char *)state
->regs
[i
], context
);
1325 set_context_reg( &new_context
, i
, (void *)value
);
1327 case RULE_VAL_EXPRESSION
:
1328 value
= eval_expression( (const unsigned char *)state
->regs
[i
], context
);
1329 set_context_reg( &new_context
, i
, &value
);
1333 new_context
.Rsp
= cfa
;
1334 *context
= new_context
;
1338 /***********************************************************************
1339 * dwarf_virtual_unwind
1341 * Equivalent of RtlVirtualUnwind for builtin modules.
1343 static NTSTATUS
dwarf_virtual_unwind( ULONG64 ip
, ULONG64
*frame
,CONTEXT
*context
,
1344 const struct dwarf_fde
*fde
, const struct dwarf_eh_bases
*bases
,
1345 PEXCEPTION_ROUTINE
*handler
, void **handler_data
)
1347 const struct dwarf_cie
*cie
;
1348 const unsigned char *ptr
, *augmentation
, *end
;
1349 ULONG_PTR len
, code_end
;
1350 struct frame_info info
;
1351 struct frame_state state_stack
[MAX_SAVED_STATES
];
1352 int aug_z_format
= 0;
1353 unsigned char lsda_encoding
= DW_EH_PE_omit
;
1355 memset( &info
, 0, sizeof(info
) );
1356 info
.state_stack
= state_stack
;
1357 info
.ip
= (ULONG_PTR
)bases
->func
;
1360 cie
= (const struct dwarf_cie
*)((const char *)&fde
->cie_offset
- fde
->cie_offset
);
1362 /* parse the CIE first */
1364 if (cie
->version
!= 1 && cie
->version
!= 3)
1366 FIXME( "unknown CIE version %u at %p\n", cie
->version
, cie
);
1367 return STATUS_INVALID_DISPOSITION
;
1369 ptr
= cie
->augmentation
+ strlen((const char *)cie
->augmentation
) + 1;
1371 info
.code_align
= dwarf_get_uleb128( &ptr
);
1372 info
.data_align
= dwarf_get_sleb128( &ptr
);
1373 if (cie
->version
== 1)
1374 info
.retaddr_reg
= *ptr
++;
1376 info
.retaddr_reg
= dwarf_get_uleb128( &ptr
);
1377 info
.state
.cfa_rule
= RULE_CFA_OFFSET
;
1379 TRACE( "function %lx base %p cie %p len %x id %x version %x aug '%s' code_align %lu data_align %ld retaddr %s\n",
1380 ip
, bases
->func
, cie
, cie
->length
, cie
->id
, cie
->version
, cie
->augmentation
,
1381 info
.code_align
, info
.data_align
, dwarf_reg_names
[info
.retaddr_reg
] );
1384 for (augmentation
= cie
->augmentation
; *augmentation
; augmentation
++)
1386 switch (*augmentation
)
1389 len
= dwarf_get_uleb128( &ptr
);
1394 lsda_encoding
= *ptr
++;
1398 unsigned char encoding
= *ptr
++;
1399 *handler
= (void *)dwarf_get_ptr( &ptr
, encoding
);
1403 info
.fde_encoding
= *ptr
++;
1406 info
.signal_frame
= 1;
1409 FIXME( "unknown augmentation '%c'\n", *augmentation
);
1410 if (!end
) return STATUS_INVALID_DISPOSITION
; /* cannot continue */
1415 end
= (const unsigned char *)(&cie
->length
+ 1) + cie
->length
;
1416 execute_cfa_instructions( ptr
, end
, ip
, &info
);
1418 ptr
= (const unsigned char *)(fde
+ 1);
1419 info
.ip
= dwarf_get_ptr( &ptr
, info
.fde_encoding
); /* fde code start */
1420 code_end
= info
.ip
+ dwarf_get_ptr( &ptr
, info
.fde_encoding
& 0x0f ); /* fde code length */
1422 if (aug_z_format
) /* get length of augmentation data */
1424 len
= dwarf_get_uleb128( &ptr
);
1429 *handler_data
= (void *)dwarf_get_ptr( &ptr
, lsda_encoding
);
1432 end
= (const unsigned char *)(&fde
->length
+ 1) + fde
->length
;
1433 TRACE( "fde %p len %x personality %p lsda %p code %lx-%lx\n",
1434 fde
, fde
->length
, *handler
, *handler_data
, info
.ip
, code_end
);
1435 execute_cfa_instructions( ptr
, end
, ip
, &info
);
1436 *frame
= context
->Rsp
;
1437 apply_frame_state( context
, &info
.state
);
1439 TRACE( "next function rip=%016lx\n", context
->Rip
);
1440 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1441 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
1442 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1443 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
1444 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1445 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
1446 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1447 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
1449 return STATUS_SUCCESS
;
1453 #ifdef HAVE_LIBUNWIND_H
1454 /***********************************************************************
1455 * libunwind_set_cursor_from_context
1457 static int libunwind_set_cursor_from_context( unw_cursor_t
*cursor
, CONTEXT
*context
, ULONG64 ip
)
1461 rc
= unw_set_reg(cursor
, UNW_REG_IP
, ip
);
1462 if (rc
== UNW_ESUCCESS
)
1463 rc
= unw_set_reg(cursor
, UNW_REG_SP
, context
->Rsp
);
1464 if (rc
== UNW_ESUCCESS
)
1465 rc
= unw_set_reg(cursor
, UNW_X86_64_RAX
, context
->Rax
);
1466 if (rc
== UNW_ESUCCESS
)
1467 rc
= unw_set_reg(cursor
, UNW_X86_64_RDX
, context
->Rdx
);
1468 if (rc
== UNW_ESUCCESS
)
1469 rc
= unw_set_reg(cursor
, UNW_X86_64_RCX
, context
->Rcx
);
1470 if (rc
== UNW_ESUCCESS
)
1471 rc
= unw_set_reg(cursor
, UNW_X86_64_RBX
, context
->Rbx
);
1472 if (rc
== UNW_ESUCCESS
)
1473 rc
= unw_set_reg(cursor
, UNW_X86_64_RSI
, context
->Rsi
);
1474 if (rc
== UNW_ESUCCESS
)
1475 rc
= unw_set_reg(cursor
, UNW_X86_64_RDI
, context
->Rdi
);
1476 if (rc
== UNW_ESUCCESS
)
1477 rc
= unw_set_reg(cursor
, UNW_X86_64_RBP
, context
->Rbp
);
1478 if (rc
== UNW_ESUCCESS
)
1479 rc
= unw_set_reg(cursor
, UNW_X86_64_R8
, context
->R8
);
1480 if (rc
== UNW_ESUCCESS
)
1481 rc
= unw_set_reg(cursor
, UNW_X86_64_R9
, context
->R9
);
1482 if (rc
== UNW_ESUCCESS
)
1483 rc
= unw_set_reg(cursor
, UNW_X86_64_R10
, context
->R10
);
1484 if (rc
== UNW_ESUCCESS
)
1485 rc
= unw_set_reg(cursor
, UNW_X86_64_R11
, context
->R11
);
1486 if (rc
== UNW_ESUCCESS
)
1487 rc
= unw_set_reg(cursor
, UNW_X86_64_R12
, context
->R12
);
1488 if (rc
== UNW_ESUCCESS
)
1489 rc
= unw_set_reg(cursor
, UNW_X86_64_R13
, context
->R13
);
1490 if (rc
== UNW_ESUCCESS
)
1491 rc
= unw_set_reg(cursor
, UNW_X86_64_R14
, context
->R14
);
1492 if (rc
== UNW_ESUCCESS
)
1493 rc
= unw_set_reg(cursor
, UNW_X86_64_R15
, context
->R15
);
1499 /***********************************************************************
1502 static int libunwind_get_reg( unw_cursor_t
*cursor
, unw_regnum_t reg
, ULONG64
*val
)
1507 rc
= unw_get_reg(cursor
, reg
, &word
);
1508 if (rc
== UNW_ESUCCESS
)
1515 /***********************************************************************
1516 * libunwind_set_context_from_cursor
1518 static BOOL
libunwind_set_context_from_cursor( CONTEXT
*context
, unw_cursor_t
*cursor
)
1522 rc
= libunwind_get_reg(cursor
, UNW_REG_IP
, &context
->Rip
);
1523 if (rc
== UNW_ESUCCESS
)
1524 rc
= libunwind_get_reg(cursor
, UNW_REG_SP
, &context
->Rsp
);
1525 if (rc
== UNW_ESUCCESS
)
1526 rc
= libunwind_get_reg(cursor
, UNW_X86_64_RAX
, &context
->Rax
);
1527 if (rc
== UNW_ESUCCESS
)
1528 rc
= libunwind_get_reg(cursor
, UNW_X86_64_RDX
, &context
->Rdx
);
1529 if (rc
== UNW_ESUCCESS
)
1530 rc
= libunwind_get_reg(cursor
, UNW_X86_64_RCX
, &context
->Rcx
);
1531 if (rc
== UNW_ESUCCESS
)
1532 rc
= libunwind_get_reg(cursor
, UNW_X86_64_RBX
, &context
->Rbx
);
1533 if (rc
== UNW_ESUCCESS
)
1534 rc
= libunwind_get_reg(cursor
, UNW_X86_64_RSI
, &context
->Rsi
);
1535 if (rc
== UNW_ESUCCESS
)
1536 rc
= libunwind_get_reg(cursor
, UNW_X86_64_RDI
, &context
->Rdi
);
1537 if (rc
== UNW_ESUCCESS
)
1538 rc
= libunwind_get_reg(cursor
, UNW_X86_64_RBP
, &context
->Rbp
);
1539 if (rc
== UNW_ESUCCESS
)
1540 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R8
, &context
->R8
);
1541 if (rc
== UNW_ESUCCESS
)
1542 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R9
, &context
->R9
);
1543 if (rc
== UNW_ESUCCESS
)
1544 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R10
, &context
->R10
);
1545 if (rc
== UNW_ESUCCESS
)
1546 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R11
, &context
->R11
);
1547 if (rc
== UNW_ESUCCESS
)
1548 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R12
, &context
->R12
);
1549 if (rc
== UNW_ESUCCESS
)
1550 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R13
, &context
->R13
);
1551 if (rc
== UNW_ESUCCESS
)
1552 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R14
, &context
->R14
);
1553 if (rc
== UNW_ESUCCESS
)
1554 rc
= libunwind_get_reg(cursor
, UNW_X86_64_R15
, &context
->R15
);
1560 /***********************************************************************
1561 * libunwind_virtual_unwind
1563 * Equivalent of RtlVirtualUnwind for builtin modules.
1565 static NTSTATUS
libunwind_virtual_unwind( ULONG64 ip
, BOOL
* got_info
, ULONG64
*frame
, CONTEXT
*context
,
1566 PEXCEPTION_ROUTINE
*handler
, void **handler_data
)
1568 unw_context_t unw_context
;
1569 unw_cursor_t cursor
;
1570 unw_proc_info_t info
;
1573 rc
= unw_getcontext( &unw_context
);
1574 if (rc
== UNW_ESUCCESS
)
1575 rc
= unw_init_local( &cursor
, &unw_context
);
1576 if (rc
== UNW_ESUCCESS
)
1577 rc
= libunwind_set_cursor_from_context( &cursor
, context
, ip
- 1 );
1578 if (rc
!= UNW_ESUCCESS
)
1580 WARN( "setup failed: %d\n", rc
);
1581 return STATUS_INVALID_DISPOSITION
;
1584 rc
= unw_get_proc_info(&cursor
, &info
);
1585 if (rc
!= UNW_ESUCCESS
&& rc
!= UNW_ENOINFO
)
1587 WARN( "failed to get info: %d\n", rc
);
1588 return STATUS_INVALID_DISPOSITION
;
1590 if (rc
== UNW_ENOINFO
|| ip
< info
.start_ip
|| info
.end_ip
<= ip
|| !info
.format
)
1593 return STATUS_SUCCESS
;
1596 TRACE( "ip %#lx function %#lx-%#lx personality %#lx lsda %#lx fde %#lx\n",
1597 ip
, (unsigned long)info
.start_ip
, (unsigned long)info
.end_ip
, (unsigned long)info
.handler
,
1598 (unsigned long)info
.lsda
, (unsigned long)info
.unwind_info
);
1600 rc
= unw_step(&cursor
);
1603 WARN( "failed to unwind: %d\n", rc
);
1604 return STATUS_INVALID_DISPOSITION
;
1607 *frame
= context
->Rsp
;
1609 rc
= libunwind_set_context_from_cursor( context
, &cursor
);
1610 if (rc
!= UNW_ESUCCESS
)
1612 WARN( "failed to update context after unwind: %d\n", rc
);
1613 return STATUS_INVALID_DISPOSITION
;
1616 *handler
= (void*)info
.handler
;
1617 *handler_data
= (void*)info
.lsda
;
1620 TRACE( "next function rip=%016lx\n", context
->Rip
);
1621 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1622 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
1623 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1624 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
1625 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1626 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
1627 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1628 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
1630 return STATUS_SUCCESS
;
1635 /***********************************************************************
1638 static inline int dispatch_signal(unsigned int sig
)
1640 if (handlers
[sig
] == NULL
) return 0;
1641 return handlers
[sig
](sig
);
1644 /***********************************************************************
1647 * Get the base of the signal stack for the current thread.
1649 static inline void *get_signal_stack(void)
1651 return (char *)NtCurrentTeb() + teb_size
;
1654 /***********************************************************************
1655 * is_inside_signal_stack
1657 * Check if pointer is inside the signal stack.
1659 static inline BOOL
is_inside_signal_stack( void *ptr
)
1661 return ((char *)ptr
>= (char *)get_signal_stack() &&
1662 (char *)ptr
< (char *)get_signal_stack() + signal_stack_size
);
1665 /***********************************************************************
1668 * Set the register values from a sigcontext.
1670 static void save_context( CONTEXT
*context
, const ucontext_t
*sigcontext
)
1672 context
->ContextFlags
= CONTEXT_CONTROL
| CONTEXT_INTEGER
| CONTEXT_SEGMENTS
| CONTEXT_DEBUG_REGISTERS
;
1673 context
->Rax
= RAX_sig(sigcontext
);
1674 context
->Rcx
= RCX_sig(sigcontext
);
1675 context
->Rdx
= RDX_sig(sigcontext
);
1676 context
->Rbx
= RBX_sig(sigcontext
);
1677 context
->Rsp
= RSP_sig(sigcontext
);
1678 context
->Rbp
= RBP_sig(sigcontext
);
1679 context
->Rsi
= RSI_sig(sigcontext
);
1680 context
->Rdi
= RDI_sig(sigcontext
);
1681 context
->R8
= R8_sig(sigcontext
);
1682 context
->R9
= R9_sig(sigcontext
);
1683 context
->R10
= R10_sig(sigcontext
);
1684 context
->R11
= R11_sig(sigcontext
);
1685 context
->R12
= R12_sig(sigcontext
);
1686 context
->R13
= R13_sig(sigcontext
);
1687 context
->R14
= R14_sig(sigcontext
);
1688 context
->R15
= R15_sig(sigcontext
);
1689 context
->Rip
= RIP_sig(sigcontext
);
1690 context
->SegCs
= CS_sig(sigcontext
);
1691 context
->SegFs
= FS_sig(sigcontext
);
1692 context
->SegGs
= GS_sig(sigcontext
);
1693 context
->EFlags
= EFL_sig(sigcontext
);
1695 context
->SegDs
= DS_sig(sigcontext
);
1697 __asm__("movw %%ds,%0" : "=m" (context
->SegDs
));
1700 context
->SegEs
= ES_sig(sigcontext
);
1702 __asm__("movw %%es,%0" : "=m" (context
->SegEs
));
1705 context
->SegSs
= SS_sig(sigcontext
);
1707 __asm__("movw %%ss,%0" : "=m" (context
->SegSs
));
1709 context
->Dr0
= amd64_thread_data()->dr0
;
1710 context
->Dr1
= amd64_thread_data()->dr1
;
1711 context
->Dr2
= amd64_thread_data()->dr2
;
1712 context
->Dr3
= amd64_thread_data()->dr3
;
1713 context
->Dr6
= amd64_thread_data()->dr6
;
1714 context
->Dr7
= amd64_thread_data()->dr7
;
1715 if (FPU_sig(sigcontext
))
1717 context
->ContextFlags
|= CONTEXT_FLOATING_POINT
;
1718 context
->u
.FltSave
= *FPU_sig(sigcontext
);
1719 context
->MxCsr
= context
->u
.FltSave
.MxCsr
;
1724 /***********************************************************************
1727 * Build a sigcontext from the register values.
1729 static void restore_context( const CONTEXT
*context
, ucontext_t
*sigcontext
)
1731 amd64_thread_data()->dr0
= context
->Dr0
;
1732 amd64_thread_data()->dr1
= context
->Dr1
;
1733 amd64_thread_data()->dr2
= context
->Dr2
;
1734 amd64_thread_data()->dr3
= context
->Dr3
;
1735 amd64_thread_data()->dr6
= context
->Dr6
;
1736 amd64_thread_data()->dr7
= context
->Dr7
;
1737 RAX_sig(sigcontext
) = context
->Rax
;
1738 RCX_sig(sigcontext
) = context
->Rcx
;
1739 RDX_sig(sigcontext
) = context
->Rdx
;
1740 RBX_sig(sigcontext
) = context
->Rbx
;
1741 RSP_sig(sigcontext
) = context
->Rsp
;
1742 RBP_sig(sigcontext
) = context
->Rbp
;
1743 RSI_sig(sigcontext
) = context
->Rsi
;
1744 RDI_sig(sigcontext
) = context
->Rdi
;
1745 R8_sig(sigcontext
) = context
->R8
;
1746 R9_sig(sigcontext
) = context
->R9
;
1747 R10_sig(sigcontext
) = context
->R10
;
1748 R11_sig(sigcontext
) = context
->R11
;
1749 R12_sig(sigcontext
) = context
->R12
;
1750 R13_sig(sigcontext
) = context
->R13
;
1751 R14_sig(sigcontext
) = context
->R14
;
1752 R15_sig(sigcontext
) = context
->R15
;
1753 RIP_sig(sigcontext
) = context
->Rip
;
1754 CS_sig(sigcontext
) = context
->SegCs
;
1755 FS_sig(sigcontext
) = context
->SegFs
;
1756 GS_sig(sigcontext
) = context
->SegGs
;
1757 EFL_sig(sigcontext
) = context
->EFlags
;
1759 DS_sig(sigcontext
) = context
->SegDs
;
1762 ES_sig(sigcontext
) = context
->SegEs
;
1765 SS_sig(sigcontext
) = context
->SegSs
;
1767 if (FPU_sig(sigcontext
)) *FPU_sig(sigcontext
) = context
->u
.FltSave
;
1771 /**************************************************************************
1772 * __chkstk (NTDLL.@)
1774 * Supposed to touch all the stack pages, but we shouldn't need that.
1776 __ASM_GLOBAL_FUNC( __chkstk
, "ret" );
1779 /***********************************************************************
1780 * RtlCaptureContext (NTDLL.@)
1782 __ASM_GLOBAL_FUNC( RtlCaptureContext
,
1784 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
1785 "movl $0x001000f,0x30(%rcx)\n\t" /* context->ContextFlags */
1786 "stmxcsr 0x34(%rcx)\n\t" /* context->MxCsr */
1787 "movw %cs,0x38(%rcx)\n\t" /* context->SegCs */
1788 "movw %ds,0x3a(%rcx)\n\t" /* context->SegDs */
1789 "movw %es,0x3c(%rcx)\n\t" /* context->SegEs */
1790 "movw %fs,0x3e(%rcx)\n\t" /* context->SegFs */
1791 "movw %gs,0x40(%rcx)\n\t" /* context->SegGs */
1792 "movw %ss,0x42(%rcx)\n\t" /* context->SegSs */
1793 "popq 0x44(%rcx)\n\t" /* context->Eflags */
1794 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
1795 "movq %rax,0x78(%rcx)\n\t" /* context->Rax */
1796 "movq %rcx,0x80(%rcx)\n\t" /* context->Rcx */
1797 "movq %rdx,0x88(%rcx)\n\t" /* context->Rdx */
1798 "movq %rbx,0x90(%rcx)\n\t" /* context->Rbx */
1799 "leaq 8(%rsp),%rax\n\t"
1800 "movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
1801 "movq %rbp,0xa0(%rcx)\n\t" /* context->Rbp */
1802 "movq %rsi,0xa8(%rcx)\n\t" /* context->Rsi */
1803 "movq %rdi,0xb0(%rcx)\n\t" /* context->Rdi */
1804 "movq %r8,0xb8(%rcx)\n\t" /* context->R8 */
1805 "movq %r9,0xc0(%rcx)\n\t" /* context->R9 */
1806 "movq %r10,0xc8(%rcx)\n\t" /* context->R10 */
1807 "movq %r11,0xd0(%rcx)\n\t" /* context->R11 */
1808 "movq %r12,0xd8(%rcx)\n\t" /* context->R12 */
1809 "movq %r13,0xe0(%rcx)\n\t" /* context->R13 */
1810 "movq %r14,0xe8(%rcx)\n\t" /* context->R14 */
1811 "movq %r15,0xf0(%rcx)\n\t" /* context->R15 */
1812 "movq (%rsp),%rax\n\t"
1813 "movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
1814 "fxsave 0x100(%rcx)\n\t" /* context->FtlSave */
1815 "movdqa %xmm0,0x1a0(%rcx)\n\t" /* context->Xmm0 */
1816 "movdqa %xmm1,0x1b0(%rcx)\n\t" /* context->Xmm1 */
1817 "movdqa %xmm2,0x1c0(%rcx)\n\t" /* context->Xmm2 */
1818 "movdqa %xmm3,0x1d0(%rcx)\n\t" /* context->Xmm3 */
1819 "movdqa %xmm4,0x1e0(%rcx)\n\t" /* context->Xmm4 */
1820 "movdqa %xmm5,0x1f0(%rcx)\n\t" /* context->Xmm5 */
1821 "movdqa %xmm6,0x200(%rcx)\n\t" /* context->Xmm6 */
1822 "movdqa %xmm7,0x210(%rcx)\n\t" /* context->Xmm7 */
1823 "movdqa %xmm8,0x220(%rcx)\n\t" /* context->Xmm8 */
1824 "movdqa %xmm9,0x230(%rcx)\n\t" /* context->Xmm9 */
1825 "movdqa %xmm10,0x240(%rcx)\n\t" /* context->Xmm10 */
1826 "movdqa %xmm11,0x250(%rcx)\n\t" /* context->Xmm11 */
1827 "movdqa %xmm12,0x260(%rcx)\n\t" /* context->Xmm12 */
1828 "movdqa %xmm13,0x270(%rcx)\n\t" /* context->Xmm13 */
1829 "movdqa %xmm14,0x280(%rcx)\n\t" /* context->Xmm14 */
1830 "movdqa %xmm15,0x290(%rcx)\n\t" /* context->Xmm15 */
1833 /***********************************************************************
1834 * set_full_cpu_context
1836 * Set the new CPU context.
1838 extern void set_full_cpu_context( const CONTEXT
*context
);
1839 __ASM_GLOBAL_FUNC( set_full_cpu_context
,
1841 __ASM_CFI(".cfi_adjust_cfa_offset 40\n\t")
1842 "ldmxcsr 0x34(%rdi)\n\t" /* context->MxCsr */
1843 "movw 0x38(%rdi),%ax\n\t" /* context->SegCs */
1844 "movq %rax,8(%rsp)\n\t"
1845 "movw 0x42(%rdi),%ax\n\t" /* context->SegSs */
1846 "movq %rax,32(%rsp)\n\t"
1847 "movq 0x44(%rdi),%rax\n\t" /* context->Eflags */
1848 "movq %rax,16(%rsp)\n\t"
1849 "movq 0x80(%rdi),%rcx\n\t" /* context->Rcx */
1850 "movq 0x88(%rdi),%rdx\n\t" /* context->Rdx */
1851 "movq 0x90(%rdi),%rbx\n\t" /* context->Rbx */
1852 "movq 0x98(%rdi),%rax\n\t" /* context->Rsp */
1853 "movq %rax,24(%rsp)\n\t"
1854 "movq 0xa0(%rdi),%rbp\n\t" /* context->Rbp */
1855 "movq 0xa8(%rdi),%rsi\n\t" /* context->Rsi */
1856 "movq 0xb8(%rdi),%r8\n\t" /* context->R8 */
1857 "movq 0xc0(%rdi),%r9\n\t" /* context->R9 */
1858 "movq 0xc8(%rdi),%r10\n\t" /* context->R10 */
1859 "movq 0xd0(%rdi),%r11\n\t" /* context->R11 */
1860 "movq 0xd8(%rdi),%r12\n\t" /* context->R12 */
1861 "movq 0xe0(%rdi),%r13\n\t" /* context->R13 */
1862 "movq 0xe8(%rdi),%r14\n\t" /* context->R14 */
1863 "movq 0xf0(%rdi),%r15\n\t" /* context->R15 */
1864 "movq 0xf8(%rdi),%rax\n\t" /* context->Rip */
1865 "movq %rax,(%rsp)\n\t"
1866 "fxrstor 0x100(%rdi)\n\t" /* context->FtlSave */
1867 "movdqa 0x1a0(%rdi),%xmm0\n\t" /* context->Xmm0 */
1868 "movdqa 0x1b0(%rdi),%xmm1\n\t" /* context->Xmm1 */
1869 "movdqa 0x1c0(%rdi),%xmm2\n\t" /* context->Xmm2 */
1870 "movdqa 0x1d0(%rdi),%xmm3\n\t" /* context->Xmm3 */
1871 "movdqa 0x1e0(%rdi),%xmm4\n\t" /* context->Xmm4 */
1872 "movdqa 0x1f0(%rdi),%xmm5\n\t" /* context->Xmm5 */
1873 "movdqa 0x200(%rdi),%xmm6\n\t" /* context->Xmm6 */
1874 "movdqa 0x210(%rdi),%xmm7\n\t" /* context->Xmm7 */
1875 "movdqa 0x220(%rdi),%xmm8\n\t" /* context->Xmm8 */
1876 "movdqa 0x230(%rdi),%xmm9\n\t" /* context->Xmm9 */
1877 "movdqa 0x240(%rdi),%xmm10\n\t" /* context->Xmm10 */
1878 "movdqa 0x250(%rdi),%xmm11\n\t" /* context->Xmm11 */
1879 "movdqa 0x260(%rdi),%xmm12\n\t" /* context->Xmm12 */
1880 "movdqa 0x270(%rdi),%xmm13\n\t" /* context->Xmm13 */
1881 "movdqa 0x280(%rdi),%xmm14\n\t" /* context->Xmm14 */
1882 "movdqa 0x290(%rdi),%xmm15\n\t" /* context->Xmm15 */
1883 "movq 0x78(%rdi),%rax\n\t" /* context->Rax */
1884 "movq 0xb0(%rdi),%rdi\n\t" /* context->Rdi */
1888 /***********************************************************************
1891 * Set the new CPU context. Used by NtSetContextThread.
1893 void DECLSPEC_HIDDEN
set_cpu_context( const CONTEXT
*context
)
1895 DWORD flags
= context
->ContextFlags
& ~CONTEXT_AMD64
;
1897 if (flags
& CONTEXT_DEBUG_REGISTERS
)
1899 amd64_thread_data()->dr0
= context
->Dr0
;
1900 amd64_thread_data()->dr1
= context
->Dr1
;
1901 amd64_thread_data()->dr2
= context
->Dr2
;
1902 amd64_thread_data()->dr3
= context
->Dr3
;
1903 amd64_thread_data()->dr6
= context
->Dr6
;
1904 amd64_thread_data()->dr7
= context
->Dr7
;
1906 if (flags
& CONTEXT_FULL
)
1908 if (!(flags
& CONTEXT_CONTROL
))
1909 FIXME( "setting partial context (%x) not supported\n", flags
);
1911 set_full_cpu_context( context
);
1916 /***********************************************************************
1919 * Copy a register context according to the flags.
1921 static void copy_context( CONTEXT
*to
, const CONTEXT
*from
, DWORD flags
)
1923 flags
&= ~CONTEXT_AMD64
; /* get rid of CPU id */
1924 if (flags
& CONTEXT_CONTROL
)
1926 to
->Rbp
= from
->Rbp
;
1927 to
->Rip
= from
->Rip
;
1928 to
->Rsp
= from
->Rsp
;
1929 to
->SegCs
= from
->SegCs
;
1930 to
->SegSs
= from
->SegSs
;
1931 to
->EFlags
= from
->EFlags
;
1933 if (flags
& CONTEXT_INTEGER
)
1935 to
->Rax
= from
->Rax
;
1936 to
->Rcx
= from
->Rcx
;
1937 to
->Rdx
= from
->Rdx
;
1938 to
->Rbx
= from
->Rbx
;
1939 to
->Rsi
= from
->Rsi
;
1940 to
->Rdi
= from
->Rdi
;
1943 to
->R10
= from
->R10
;
1944 to
->R11
= from
->R11
;
1945 to
->R12
= from
->R12
;
1946 to
->R13
= from
->R13
;
1947 to
->R14
= from
->R14
;
1948 to
->R15
= from
->R15
;
1950 if (flags
& CONTEXT_SEGMENTS
)
1952 to
->SegDs
= from
->SegDs
;
1953 to
->SegEs
= from
->SegEs
;
1954 to
->SegFs
= from
->SegFs
;
1955 to
->SegGs
= from
->SegGs
;
1957 if (flags
& CONTEXT_FLOATING_POINT
)
1959 to
->MxCsr
= from
->MxCsr
;
1960 to
->u
.FltSave
= from
->u
.FltSave
;
1962 if (flags
& CONTEXT_DEBUG_REGISTERS
)
1964 to
->Dr0
= from
->Dr0
;
1965 to
->Dr1
= from
->Dr1
;
1966 to
->Dr2
= from
->Dr2
;
1967 to
->Dr3
= from
->Dr3
;
1968 to
->Dr6
= from
->Dr6
;
1969 to
->Dr7
= from
->Dr7
;
1974 /***********************************************************************
1977 * Convert a register context to the server format.
1979 NTSTATUS
context_to_server( context_t
*to
, const CONTEXT
*from
)
1981 DWORD flags
= from
->ContextFlags
& ~CONTEXT_AMD64
; /* get rid of CPU id */
1983 memset( to
, 0, sizeof(*to
) );
1984 to
->cpu
= CPU_x86_64
;
1986 if (flags
& CONTEXT_CONTROL
)
1988 to
->flags
|= SERVER_CTX_CONTROL
;
1989 to
->ctl
.x86_64_regs
.rbp
= from
->Rbp
;
1990 to
->ctl
.x86_64_regs
.rip
= from
->Rip
;
1991 to
->ctl
.x86_64_regs
.rsp
= from
->Rsp
;
1992 to
->ctl
.x86_64_regs
.cs
= from
->SegCs
;
1993 to
->ctl
.x86_64_regs
.ss
= from
->SegSs
;
1994 to
->ctl
.x86_64_regs
.flags
= from
->EFlags
;
1996 if (flags
& CONTEXT_INTEGER
)
1998 to
->flags
|= SERVER_CTX_INTEGER
;
1999 to
->integer
.x86_64_regs
.rax
= from
->Rax
;
2000 to
->integer
.x86_64_regs
.rcx
= from
->Rcx
;
2001 to
->integer
.x86_64_regs
.rdx
= from
->Rdx
;
2002 to
->integer
.x86_64_regs
.rbx
= from
->Rbx
;
2003 to
->integer
.x86_64_regs
.rsi
= from
->Rsi
;
2004 to
->integer
.x86_64_regs
.rdi
= from
->Rdi
;
2005 to
->integer
.x86_64_regs
.r8
= from
->R8
;
2006 to
->integer
.x86_64_regs
.r9
= from
->R9
;
2007 to
->integer
.x86_64_regs
.r10
= from
->R10
;
2008 to
->integer
.x86_64_regs
.r11
= from
->R11
;
2009 to
->integer
.x86_64_regs
.r12
= from
->R12
;
2010 to
->integer
.x86_64_regs
.r13
= from
->R13
;
2011 to
->integer
.x86_64_regs
.r14
= from
->R14
;
2012 to
->integer
.x86_64_regs
.r15
= from
->R15
;
2014 if (flags
& CONTEXT_SEGMENTS
)
2016 to
->flags
|= SERVER_CTX_SEGMENTS
;
2017 to
->seg
.x86_64_regs
.ds
= from
->SegDs
;
2018 to
->seg
.x86_64_regs
.es
= from
->SegEs
;
2019 to
->seg
.x86_64_regs
.fs
= from
->SegFs
;
2020 to
->seg
.x86_64_regs
.gs
= from
->SegGs
;
2022 if (flags
& CONTEXT_FLOATING_POINT
)
2024 to
->flags
|= SERVER_CTX_FLOATING_POINT
;
2025 memcpy( to
->fp
.x86_64_regs
.fpregs
, &from
->u
.FltSave
, sizeof(to
->fp
.x86_64_regs
.fpregs
) );
2027 if (flags
& CONTEXT_DEBUG_REGISTERS
)
2029 to
->flags
|= SERVER_CTX_DEBUG_REGISTERS
;
2030 to
->debug
.x86_64_regs
.dr0
= from
->Dr0
;
2031 to
->debug
.x86_64_regs
.dr1
= from
->Dr1
;
2032 to
->debug
.x86_64_regs
.dr2
= from
->Dr2
;
2033 to
->debug
.x86_64_regs
.dr3
= from
->Dr3
;
2034 to
->debug
.x86_64_regs
.dr6
= from
->Dr6
;
2035 to
->debug
.x86_64_regs
.dr7
= from
->Dr7
;
2037 return STATUS_SUCCESS
;
2041 /***********************************************************************
2042 * context_from_server
2044 * Convert a register context from the server format.
2046 NTSTATUS
context_from_server( CONTEXT
*to
, const context_t
*from
)
2048 if (from
->cpu
!= CPU_x86_64
) return STATUS_INVALID_PARAMETER
;
2050 to
->ContextFlags
= CONTEXT_AMD64
;
2051 if (from
->flags
& SERVER_CTX_CONTROL
)
2053 to
->ContextFlags
|= CONTEXT_CONTROL
;
2054 to
->Rbp
= from
->ctl
.x86_64_regs
.rbp
;
2055 to
->Rip
= from
->ctl
.x86_64_regs
.rip
;
2056 to
->Rsp
= from
->ctl
.x86_64_regs
.rsp
;
2057 to
->SegCs
= from
->ctl
.x86_64_regs
.cs
;
2058 to
->SegSs
= from
->ctl
.x86_64_regs
.ss
;
2059 to
->EFlags
= from
->ctl
.x86_64_regs
.flags
;
2062 if (from
->flags
& SERVER_CTX_INTEGER
)
2064 to
->ContextFlags
|= CONTEXT_INTEGER
;
2065 to
->Rax
= from
->integer
.x86_64_regs
.rax
;
2066 to
->Rcx
= from
->integer
.x86_64_regs
.rcx
;
2067 to
->Rdx
= from
->integer
.x86_64_regs
.rdx
;
2068 to
->Rbx
= from
->integer
.x86_64_regs
.rbx
;
2069 to
->Rsi
= from
->integer
.x86_64_regs
.rsi
;
2070 to
->Rdi
= from
->integer
.x86_64_regs
.rdi
;
2071 to
->R8
= from
->integer
.x86_64_regs
.r8
;
2072 to
->R9
= from
->integer
.x86_64_regs
.r9
;
2073 to
->R10
= from
->integer
.x86_64_regs
.r10
;
2074 to
->R11
= from
->integer
.x86_64_regs
.r11
;
2075 to
->R12
= from
->integer
.x86_64_regs
.r12
;
2076 to
->R13
= from
->integer
.x86_64_regs
.r13
;
2077 to
->R14
= from
->integer
.x86_64_regs
.r14
;
2078 to
->R15
= from
->integer
.x86_64_regs
.r15
;
2080 if (from
->flags
& SERVER_CTX_SEGMENTS
)
2082 to
->ContextFlags
|= CONTEXT_SEGMENTS
;
2083 to
->SegDs
= from
->seg
.x86_64_regs
.ds
;
2084 to
->SegEs
= from
->seg
.x86_64_regs
.es
;
2085 to
->SegFs
= from
->seg
.x86_64_regs
.fs
;
2086 to
->SegGs
= from
->seg
.x86_64_regs
.gs
;
2088 if (from
->flags
& SERVER_CTX_FLOATING_POINT
)
2090 to
->ContextFlags
|= CONTEXT_FLOATING_POINT
;
2091 memcpy( &to
->u
.FltSave
, from
->fp
.x86_64_regs
.fpregs
, sizeof(from
->fp
.x86_64_regs
.fpregs
) );
2092 to
->MxCsr
= to
->u
.FltSave
.MxCsr
;
2094 if (from
->flags
& SERVER_CTX_DEBUG_REGISTERS
)
2096 to
->ContextFlags
|= CONTEXT_DEBUG_REGISTERS
;
2097 to
->Dr0
= from
->debug
.x86_64_regs
.dr0
;
2098 to
->Dr1
= from
->debug
.x86_64_regs
.dr1
;
2099 to
->Dr2
= from
->debug
.x86_64_regs
.dr2
;
2100 to
->Dr3
= from
->debug
.x86_64_regs
.dr3
;
2101 to
->Dr6
= from
->debug
.x86_64_regs
.dr6
;
2102 to
->Dr7
= from
->debug
.x86_64_regs
.dr7
;
2104 return STATUS_SUCCESS
;
2108 /***********************************************************************
2109 * NtSetContextThread (NTDLL.@)
2110 * ZwSetContextThread (NTDLL.@)
2112 NTSTATUS WINAPI
NtSetContextThread( HANDLE handle
, const CONTEXT
*context
)
2114 NTSTATUS ret
= STATUS_SUCCESS
;
2115 BOOL self
= (handle
== GetCurrentThread());
2117 /* debug registers require a server call */
2118 if (self
&& (context
->ContextFlags
& (CONTEXT_DEBUG_REGISTERS
& ~CONTEXT_AMD64
)))
2119 self
= (amd64_thread_data()->dr0
== context
->Dr0
&&
2120 amd64_thread_data()->dr1
== context
->Dr1
&&
2121 amd64_thread_data()->dr2
== context
->Dr2
&&
2122 amd64_thread_data()->dr3
== context
->Dr3
&&
2123 amd64_thread_data()->dr6
== context
->Dr6
&&
2124 amd64_thread_data()->dr7
== context
->Dr7
);
2126 if (!self
) ret
= set_thread_context( handle
, context
, &self
);
2128 if (self
&& ret
== STATUS_SUCCESS
) set_cpu_context( context
);
2133 /***********************************************************************
2134 * NtGetContextThread (NTDLL.@)
2135 * ZwGetContextThread (NTDLL.@)
2137 NTSTATUS WINAPI
NtGetContextThread( HANDLE handle
, CONTEXT
*context
)
2140 DWORD needed_flags
= context
->ContextFlags
;
2141 BOOL self
= (handle
== GetCurrentThread());
2143 /* debug registers require a server call */
2144 if (context
->ContextFlags
& (CONTEXT_DEBUG_REGISTERS
& ~CONTEXT_AMD64
)) self
= FALSE
;
2148 if ((ret
= get_thread_context( handle
, context
, &self
))) return ret
;
2149 needed_flags
&= ~context
->ContextFlags
;
2157 RtlCaptureContext( &ctx
);
2158 copy_context( context
, &ctx
, ctx
.ContextFlags
& needed_flags
);
2159 context
->ContextFlags
|= ctx
.ContextFlags
& needed_flags
;
2161 /* update the cached version of the debug registers */
2162 if (context
->ContextFlags
& (CONTEXT_DEBUG_REGISTERS
& ~CONTEXT_AMD64
))
2164 amd64_thread_data()->dr0
= context
->Dr0
;
2165 amd64_thread_data()->dr1
= context
->Dr1
;
2166 amd64_thread_data()->dr2
= context
->Dr2
;
2167 amd64_thread_data()->dr3
= context
->Dr3
;
2168 amd64_thread_data()->dr6
= context
->Dr6
;
2169 amd64_thread_data()->dr7
= context
->Dr7
;
2172 return STATUS_SUCCESS
;
2176 extern void raise_func_trampoline( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, raise_func func
);
2177 __ASM_GLOBAL_FUNC( raise_func_trampoline
,
2178 __ASM_CFI(".cfi_signal_frame\n\t")
2179 __ASM_CFI(".cfi_def_cfa %rbp,160\n\t") /* red zone + rip + rbp + rdi + rsi */
2180 __ASM_CFI(".cfi_rel_offset %rip,24\n\t")
2181 __ASM_CFI(".cfi_rel_offset %rbp,16\n\t")
2182 __ASM_CFI(".cfi_rel_offset %rdi,8\n\t")
2183 __ASM_CFI(".cfi_rel_offset %rsi,0\n\t")
2187 /***********************************************************************
2190 * Setup a proper stack frame for the raise function, and modify the
2191 * sigcontext so that the return from the signal handler will call
2192 * the raise function.
2194 static EXCEPTION_RECORD
*setup_exception( ucontext_t
*sigcontext
, raise_func func
)
2199 EXCEPTION_RECORD rec
;
2204 ULONG64 red_zone
[16];
2207 DWORD exception_code
= 0;
2209 stack
= (struct stack_layout
*)(RSP_sig(sigcontext
) & ~15);
2211 /* stack sanity checks */
2213 if (is_inside_signal_stack( stack
))
2215 ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
2216 GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
), (ULONG_PTR
)RSP_sig(sigcontext
),
2217 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
2221 if (stack
- 1 > stack
|| /* check for overflow in subtraction */
2222 (char *)stack
<= (char *)NtCurrentTeb()->DeallocationStack
||
2223 (char *)stack
> (char *)NtCurrentTeb()->Tib
.StackBase
)
2225 WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
2226 GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
), (ULONG_PTR
)RSP_sig(sigcontext
),
2227 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
2229 else if ((char *)(stack
- 1) < (char *)NtCurrentTeb()->DeallocationStack
+ 4096)
2231 /* stack overflow on last page, unrecoverable */
2232 UINT diff
= (char *)NtCurrentTeb()->DeallocationStack
+ 4096 - (char *)(stack
- 1);
2233 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
2234 diff
, GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
),
2235 (ULONG_PTR
)RSP_sig(sigcontext
), NtCurrentTeb()->DeallocationStack
,
2236 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
2239 else if ((char *)(stack
- 1) < (char *)NtCurrentTeb()->Tib
.StackLimit
)
2241 /* stack access below stack limit, may be recoverable */
2242 if (virtual_handle_stack_fault( stack
- 1 )) exception_code
= EXCEPTION_STACK_OVERFLOW
;
2245 UINT diff
= (char *)NtCurrentTeb()->Tib
.StackLimit
- (char *)(stack
- 1);
2246 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
2247 diff
, GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
),
2248 (ULONG_PTR
)RSP_sig(sigcontext
), NtCurrentTeb()->DeallocationStack
,
2249 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
2254 stack
--; /* push the stack_layout structure */
2255 #if defined(VALGRIND_MAKE_MEM_UNDEFINED)
2256 VALGRIND_MAKE_MEM_UNDEFINED(stack
, sizeof(*stack
));
2257 #elif defined(VALGRIND_MAKE_WRITABLE)
2258 VALGRIND_MAKE_WRITABLE(stack
, sizeof(*stack
));
2260 stack
->rec
.ExceptionRecord
= NULL
;
2261 stack
->rec
.ExceptionCode
= exception_code
;
2262 stack
->rec
.ExceptionFlags
= EXCEPTION_CONTINUABLE
;
2263 stack
->rec
.ExceptionAddress
= (void *)RIP_sig(sigcontext
);
2264 stack
->rec
.NumberParameters
= 0;
2265 save_context( &stack
->context
, sigcontext
);
2267 /* store return address and %rbp without aligning, so that the offset is fixed */
2268 rsp_ptr
= (ULONG64
*)RSP_sig(sigcontext
) - 16;
2269 *(--rsp_ptr
) = RIP_sig(sigcontext
);
2270 *(--rsp_ptr
) = RBP_sig(sigcontext
);
2271 *(--rsp_ptr
) = RDI_sig(sigcontext
);
2272 *(--rsp_ptr
) = RSI_sig(sigcontext
);
2274 /* now modify the sigcontext to return to the raise function */
2275 RIP_sig(sigcontext
) = (ULONG_PTR
)raise_func_trampoline
;
2276 RDI_sig(sigcontext
) = (ULONG_PTR
)&stack
->rec
;
2277 RSI_sig(sigcontext
) = (ULONG_PTR
)&stack
->context
;
2278 RDX_sig(sigcontext
) = (ULONG_PTR
)func
;
2279 RBP_sig(sigcontext
) = (ULONG_PTR
)rsp_ptr
;
2280 RSP_sig(sigcontext
) = (ULONG_PTR
)stack
;
2281 /* clear single-step, direction, and align check flag */
2282 EFL_sig(sigcontext
) &= ~(0x100|0x400|0x40000);
2288 /***********************************************************************
2289 * get_exception_context
2291 * Get a pointer to the context built by setup_exception.
2293 static inline CONTEXT
*get_exception_context( EXCEPTION_RECORD
*rec
)
2295 return (CONTEXT
*)rec
- 1; /* cf. stack_layout structure */
2299 /**********************************************************************
2300 * find_function_info
2302 static RUNTIME_FUNCTION
*find_function_info( ULONG64 pc
, HMODULE module
,
2303 RUNTIME_FUNCTION
*func
, ULONG size
)
2306 int max
= size
/sizeof(*func
) - 1;
2310 int pos
= (min
+ max
) / 2;
2311 if ((char *)pc
< (char *)module
+ func
[pos
].BeginAddress
) max
= pos
- 1;
2312 else if ((char *)pc
>= (char *)module
+ func
[pos
].EndAddress
) min
= pos
+ 1;
2316 while (func
->UnwindData
& 1) /* follow chained entry */
2317 func
= (RUNTIME_FUNCTION
*)((char *)module
+ (func
->UnwindData
& ~1));
2324 /**********************************************************************
2325 * lookup_function_info
2327 static RUNTIME_FUNCTION
*lookup_function_info( ULONG64 pc
, ULONG64
*base
, LDR_MODULE
**module
)
2329 RUNTIME_FUNCTION
*func
= NULL
;
2330 struct dynamic_unwind_entry
*entry
;
2333 /* PE module or wine module */
2334 if (!LdrFindEntryForAddress( (void *)pc
, module
))
2336 *base
= (ULONG64
)(*module
)->BaseAddress
;
2337 if ((func
= RtlImageDirectoryEntryToData( (*module
)->BaseAddress
, TRUE
,
2338 IMAGE_DIRECTORY_ENTRY_EXCEPTION
, &size
)))
2340 /* lookup in function table */
2341 func
= find_function_info( pc
, (*module
)->BaseAddress
, func
, size
);
2348 RtlEnterCriticalSection( &dynamic_unwind_section
);
2349 LIST_FOR_EACH_ENTRY( entry
, &dynamic_unwind_list
, struct dynamic_unwind_entry
, entry
)
2351 if (pc
>= entry
->base
&& pc
< entry
->base
+ entry
->size
)
2353 *base
= entry
->base
;
2355 /* use callback or lookup in function table */
2356 if (entry
->callback
)
2357 func
= entry
->callback( pc
, entry
->context
);
2359 func
= find_function_info( pc
, (HMODULE
)entry
->base
, entry
->table
, entry
->table_size
);
2363 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2369 static DWORD
nested_exception_handler( EXCEPTION_RECORD
*rec
, EXCEPTION_REGISTRATION_RECORD
*frame
,
2370 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
2372 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
)) return ExceptionContinueSearch
;
2375 return ExceptionNestedException
;
2378 /**********************************************************************
2381 * Call a single exception handler.
2382 * FIXME: Handle nested exceptions.
2384 static DWORD
call_handler( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, DISPATCHER_CONTEXT
*dispatch
)
2386 EXCEPTION_REGISTRATION_RECORD frame
;
2389 frame
.Handler
= nested_exception_handler
;
2390 __wine_push_frame( &frame
);
2392 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2393 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
2394 res
= dispatch
->LanguageHandler( rec
, dispatch
->EstablisherFrame
, context
, dispatch
);
2395 TRACE( "handler at %p returned %u\n", dispatch
->LanguageHandler
, res
);
2397 __wine_pop_frame( &frame
);
2402 /**********************************************************************
2405 * Call a single exception handler from the TEB chain.
2406 * FIXME: Handle nested exceptions.
2408 static DWORD
call_teb_handler( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, DISPATCHER_CONTEXT
*dispatch
,
2409 EXCEPTION_REGISTRATION_RECORD
*teb_frame
)
2413 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
2414 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, dispatch
);
2415 res
= teb_frame
->Handler( rec
, teb_frame
, context
, (EXCEPTION_REGISTRATION_RECORD
**)dispatch
);
2416 TRACE( "handler at %p returned %u\n", teb_frame
->Handler
, res
);
2421 /**********************************************************************
2422 * call_stack_handlers
2424 * Call the stack handlers chain.
2426 static NTSTATUS
call_stack_handlers( EXCEPTION_RECORD
*rec
, CONTEXT
*orig_context
)
2428 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
2429 UNWIND_HISTORY_TABLE table
;
2430 DISPATCHER_CONTEXT dispatch
;
2435 context
= *orig_context
;
2436 dispatch
.TargetIp
= 0;
2437 dispatch
.ContextRecord
= &context
;
2438 dispatch
.HistoryTable
= &table
;
2441 /* FIXME: should use the history table to make things faster */
2443 dispatch
.ImageBase
= 0;
2444 dispatch
.ControlPc
= context
.Rip
;
2445 dispatch
.ScopeIndex
= 0;
2447 /* first look for PE exception information */
2449 if ((dispatch
.FunctionEntry
= lookup_function_info( dispatch
.ControlPc
, &dispatch
.ImageBase
, &module
)))
2451 dispatch
.LanguageHandler
= RtlVirtualUnwind( UNW_FLAG_EHANDLER
, dispatch
.ImageBase
,
2452 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
2453 &context
, &dispatch
.HandlerData
,
2454 &dispatch
.EstablisherFrame
, NULL
);
2458 /* then look for host system exception information */
2460 if (!module
|| (module
->Flags
& LDR_WINE_INTERNAL
))
2462 BOOL got_info
= FALSE
;
2463 struct dwarf_eh_bases bases
;
2464 const struct dwarf_fde
*fde
= _Unwind_Find_FDE( (void *)(dispatch
.ControlPc
- 1), &bases
);
2468 status
= dwarf_virtual_unwind( dispatch
.ControlPc
, &dispatch
.EstablisherFrame
, &context
,
2469 fde
, &bases
, &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
2470 if (status
!= STATUS_SUCCESS
) return status
;
2473 #ifdef HAVE_LIBUNWIND_H
2476 status
= libunwind_virtual_unwind( dispatch
.ControlPc
, &got_info
, &dispatch
.EstablisherFrame
, &context
,
2477 &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
2478 if (status
!= STATUS_SUCCESS
) return status
;
2484 dispatch
.FunctionEntry
= NULL
;
2485 if (dispatch
.LanguageHandler
&& !module
)
2487 FIXME( "calling personality routine in system library not supported yet\n" );
2488 dispatch
.LanguageHandler
= NULL
;
2493 else WARN( "exception data not found in %s\n", debugstr_w(module
->BaseDllName
.Buffer
) );
2495 context
.Rip
= *(ULONG64
*)context
.Rsp
;
2496 context
.Rsp
= context
.Rsp
+ sizeof(ULONG64
);
2497 dispatch
.EstablisherFrame
= context
.Rsp
;
2498 dispatch
.LanguageHandler
= NULL
;
2501 if (!dispatch
.EstablisherFrame
) break;
2503 if ((dispatch
.EstablisherFrame
& 7) ||
2504 dispatch
.EstablisherFrame
< (ULONG64
)NtCurrentTeb()->Tib
.StackLimit
||
2505 dispatch
.EstablisherFrame
> (ULONG64
)NtCurrentTeb()->Tib
.StackBase
)
2507 ERR( "invalid frame %lx (%p-%p)\n", dispatch
.EstablisherFrame
,
2508 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
2509 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
2513 if (dispatch
.LanguageHandler
)
2515 switch (call_handler( rec
, orig_context
, &dispatch
))
2517 case ExceptionContinueExecution
:
2518 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
2519 return STATUS_SUCCESS
;
2520 case ExceptionContinueSearch
:
2522 case ExceptionNestedException
:
2523 FIXME( "nested exception\n" );
2525 case ExceptionCollidedUnwind
: {
2528 context
= *dispatch
.ContextRecord
;
2529 dispatch
.ContextRecord
= &context
;
2530 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
2531 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
2532 &context
, NULL
, &frame
, NULL
);
2536 return STATUS_INVALID_DISPOSITION
;
2539 /* hack: call wine handlers registered in the tib list */
2540 else while ((ULONG64
)teb_frame
< context
.Rsp
)
2542 TRACE( "found wine frame %p rsp %lx handler %p\n",
2543 teb_frame
, context
.Rsp
, teb_frame
->Handler
);
2544 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
2545 switch (call_teb_handler( rec
, orig_context
, &dispatch
, teb_frame
))
2547 case ExceptionContinueExecution
:
2548 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
2549 return STATUS_SUCCESS
;
2550 case ExceptionContinueSearch
:
2552 case ExceptionNestedException
:
2553 FIXME( "nested exception\n" );
2555 case ExceptionCollidedUnwind
: {
2558 context
= *dispatch
.ContextRecord
;
2559 dispatch
.ContextRecord
= &context
;
2560 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
2561 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
2562 &context
, NULL
, &frame
, NULL
);
2563 teb_frame
= teb_frame
->Prev
;
2567 return STATUS_INVALID_DISPOSITION
;
2569 teb_frame
= teb_frame
->Prev
;
2572 if (context
.Rsp
== (ULONG64
)NtCurrentTeb()->Tib
.StackBase
) break;
2574 return STATUS_UNHANDLED_EXCEPTION
;
2578 /*******************************************************************
2579 * NtRaiseException (NTDLL.@)
2581 NTSTATUS WINAPI
NtRaiseException( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, BOOL first_chance
)
2589 TRACE( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
2590 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
2591 context
->Rip
, GetCurrentThreadId() );
2592 for (c
= 0; c
< min( EXCEPTION_MAXIMUM_PARAMETERS
, rec
->NumberParameters
); c
++)
2593 TRACE( " info[%d]=%016lx\n", c
, rec
->ExceptionInformation
[c
] );
2594 if (rec
->ExceptionCode
== EXCEPTION_WINE_STUB
)
2596 if (rec
->ExceptionInformation
[1] >> 16)
2597 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
2598 rec
->ExceptionAddress
,
2599 (char*)rec
->ExceptionInformation
[0], (char*)rec
->ExceptionInformation
[1] );
2601 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
2602 rec
->ExceptionAddress
,
2603 (char*)rec
->ExceptionInformation
[0], rec
->ExceptionInformation
[1] );
2607 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
2608 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
2609 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
2610 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
2611 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
2612 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
2613 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
2614 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
2616 status
= send_debug_event( rec
, TRUE
, context
);
2617 if (status
== DBG_CONTINUE
|| status
== DBG_EXCEPTION_HANDLED
) goto done
;
2619 /* fix up instruction pointer in context for EXCEPTION_BREAKPOINT */
2620 if (rec
->ExceptionCode
== EXCEPTION_BREAKPOINT
) context
->Rip
--;
2622 if (call_vectored_handlers( rec
, context
) == EXCEPTION_CONTINUE_EXECUTION
) goto done
;
2624 if ((status
= call_stack_handlers( rec
, context
)) == STATUS_SUCCESS
) goto done
;
2625 if (status
!= STATUS_UNHANDLED_EXCEPTION
) return status
;
2628 /* last chance exception */
2630 status
= send_debug_event( rec
, FALSE
, context
);
2631 if (status
!= DBG_CONTINUE
)
2633 if (rec
->ExceptionFlags
& EH_STACK_INVALID
)
2634 ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
2635 else if (rec
->ExceptionCode
== STATUS_NONCONTINUABLE_EXCEPTION
)
2636 ERR("Process attempted to continue execution after noncontinuable exception.\n");
2638 ERR("Unhandled exception code %x flags %x addr %p\n",
2639 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
);
2640 NtTerminateProcess( NtCurrentProcess(), rec
->ExceptionCode
);
2644 return NtSetContextThread( GetCurrentThread(), context
);
2648 /**********************************************************************
2649 * raise_segv_exception
2651 static void raise_segv_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2655 switch(rec
->ExceptionCode
)
2657 case EXCEPTION_ACCESS_VIOLATION
:
2658 if (rec
->NumberParameters
== 2)
2660 if (!(rec
->ExceptionCode
= virtual_handle_fault( (void *)rec
->ExceptionInformation
[1],
2661 rec
->ExceptionInformation
[0], FALSE
)))
2662 set_cpu_context( context
);
2665 case EXCEPTION_BREAKPOINT
:
2666 switch (rec
->ExceptionInformation
[0])
2668 case 1: /* BREAKPOINT_PRINT */
2669 case 3: /* BREAKPOINT_LOAD_SYMBOLS */
2670 case 4: /* BREAKPOINT_UNLOAD_SYMBOLS */
2671 case 5: /* BREAKPOINT_COMMAND_STRING (>= Win2003) */
2672 set_cpu_context( context
);
2676 status
= NtRaiseException( rec
, context
, TRUE
);
2677 raise_status( status
, rec
);
2681 /**********************************************************************
2682 * raise_trap_exception
2684 static void raise_trap_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2688 if (rec
->ExceptionCode
== EXCEPTION_SINGLE_STEP
)
2690 /* when single stepping can't tell whether this is a hw bp or a
2691 * single step interrupt. try to avoid as much overhead as possible
2692 * and only do a server call if there is any hw bp enabled. */
2694 if( !(context
->EFlags
& 0x100) || (amd64_thread_data()->dr7
& 0xff) )
2696 /* (possible) hardware breakpoint, fetch the debug registers */
2697 DWORD saved_flags
= context
->ContextFlags
;
2698 context
->ContextFlags
= CONTEXT_DEBUG_REGISTERS
;
2699 NtGetContextThread(GetCurrentThread(), context
);
2700 context
->ContextFlags
|= saved_flags
; /* restore flags */
2703 context
->EFlags
&= ~0x100; /* clear single-step flag */
2706 status
= NtRaiseException( rec
, context
, TRUE
);
2707 raise_status( status
, rec
);
2711 /**********************************************************************
2712 * raise_generic_exception
2714 * Generic raise function for exceptions that don't need special treatment.
2716 static void raise_generic_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2718 NTSTATUS status
= NtRaiseException( rec
, context
, TRUE
);
2719 raise_status( status
, rec
);
2723 /***********************************************************************
2726 * Handle an interrupt.
2728 static inline BOOL
handle_interrupt( unsigned int interrupt
, EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2734 rec
->ExceptionCode
= EXCEPTION_BREAKPOINT
;
2735 rec
->ExceptionAddress
= (void *)context
->Rip
;
2736 rec
->NumberParameters
= 1;
2737 rec
->ExceptionInformation
[0] = context
->Rax
;
2745 /**********************************************************************
2748 * Handler for SIGSEGV and related errors.
2750 static void segv_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2752 EXCEPTION_RECORD
*rec
;
2753 ucontext_t
*ucontext
= sigcontext
;
2755 /* check for page fault inside the thread stack */
2756 if (TRAP_sig(ucontext
) == TRAP_x86_PAGEFLT
&&
2757 (char *)siginfo
->si_addr
>= (char *)NtCurrentTeb()->DeallocationStack
&&
2758 (char *)siginfo
->si_addr
< (char *)NtCurrentTeb()->Tib
.StackBase
&&
2759 virtual_handle_stack_fault( siginfo
->si_addr
))
2761 /* check if this was the last guard page */
2762 if ((char *)siginfo
->si_addr
< (char *)NtCurrentTeb()->DeallocationStack
+ 2*4096)
2764 rec
= setup_exception( sigcontext
, raise_segv_exception
);
2765 rec
->ExceptionCode
= EXCEPTION_STACK_OVERFLOW
;
2770 rec
= setup_exception( sigcontext
, raise_segv_exception
);
2771 if (rec
->ExceptionCode
== EXCEPTION_STACK_OVERFLOW
) return;
2773 switch(TRAP_sig(ucontext
))
2775 case TRAP_x86_OFLOW
: /* Overflow exception */
2776 rec
->ExceptionCode
= EXCEPTION_INT_OVERFLOW
;
2778 case TRAP_x86_BOUND
: /* Bound range exception */
2779 rec
->ExceptionCode
= EXCEPTION_ARRAY_BOUNDS_EXCEEDED
;
2781 case TRAP_x86_PRIVINFLT
: /* Invalid opcode exception */
2782 rec
->ExceptionCode
= EXCEPTION_ILLEGAL_INSTRUCTION
;
2784 case TRAP_x86_STKFLT
: /* Stack fault */
2785 rec
->ExceptionCode
= EXCEPTION_STACK_OVERFLOW
;
2787 case TRAP_x86_SEGNPFLT
: /* Segment not present exception */
2788 case TRAP_x86_PROTFLT
: /* General protection fault */
2789 case TRAP_x86_UNKNOWN
: /* Unknown fault code */
2791 CONTEXT
*win_context
= get_exception_context( rec
);
2792 WORD err
= ERROR_sig(ucontext
);
2793 if ((err
& 7) == 2 && handle_interrupt( err
>> 3, rec
, win_context
)) break;
2794 rec
->ExceptionCode
= err
? EXCEPTION_ACCESS_VIOLATION
: EXCEPTION_PRIV_INSTRUCTION
;
2795 rec
->ExceptionCode
= EXCEPTION_ACCESS_VIOLATION
;
2798 case TRAP_x86_PAGEFLT
: /* Page fault */
2799 rec
->ExceptionCode
= EXCEPTION_ACCESS_VIOLATION
;
2800 rec
->NumberParameters
= 2;
2801 rec
->ExceptionInformation
[0] = (ERROR_sig(ucontext
) & 2) != 0;
2802 rec
->ExceptionInformation
[1] = (ULONG_PTR
)siginfo
->si_addr
;
2804 case TRAP_x86_ALIGNFLT
: /* Alignment check exception */
2805 rec
->ExceptionCode
= EXCEPTION_DATATYPE_MISALIGNMENT
;
2808 ERR( "Got unexpected trap %ld\n", (ULONG_PTR
)TRAP_sig(ucontext
) );
2810 case TRAP_x86_NMI
: /* NMI interrupt */
2811 case TRAP_x86_DNA
: /* Device not available exception */
2812 case TRAP_x86_DOUBLEFLT
: /* Double fault exception */
2813 case TRAP_x86_TSSFLT
: /* Invalid TSS exception */
2814 case TRAP_x86_MCHK
: /* Machine check exception */
2815 case TRAP_x86_CACHEFLT
: /* Cache flush exception */
2816 rec
->ExceptionCode
= EXCEPTION_ILLEGAL_INSTRUCTION
;
2821 /**********************************************************************
2824 * Handler for SIGTRAP.
2826 static void trap_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2828 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_trap_exception
);
2830 switch (siginfo
->si_code
)
2832 case TRAP_TRACE
: /* Single-step exception */
2833 case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
2834 rec
->ExceptionCode
= EXCEPTION_SINGLE_STEP
;
2836 case TRAP_BRKPT
: /* Breakpoint exception */
2837 rec
->ExceptionAddress
= (char *)rec
->ExceptionAddress
- 1; /* back up over the int3 instruction */
2840 rec
->ExceptionCode
= EXCEPTION_BREAKPOINT
;
2841 rec
->NumberParameters
= 1;
2842 rec
->ExceptionInformation
[0] = 0;
2847 /**********************************************************************
2850 * Handler for SIGFPE.
2852 static void fpe_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2854 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2856 switch (siginfo
->si_code
)
2859 rec
->ExceptionCode
= EXCEPTION_ARRAY_BOUNDS_EXCEEDED
;
2862 rec
->ExceptionCode
= EXCEPTION_INT_DIVIDE_BY_ZERO
;
2865 rec
->ExceptionCode
= EXCEPTION_INT_OVERFLOW
;
2868 rec
->ExceptionCode
= EXCEPTION_FLT_DIVIDE_BY_ZERO
;
2871 rec
->ExceptionCode
= EXCEPTION_FLT_OVERFLOW
;
2874 rec
->ExceptionCode
= EXCEPTION_FLT_UNDERFLOW
;
2877 rec
->ExceptionCode
= EXCEPTION_FLT_INEXACT_RESULT
;
2881 rec
->ExceptionCode
= EXCEPTION_FLT_INVALID_OPERATION
;
2886 /**********************************************************************
2889 * Handler for SIGINT.
2891 static void int_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2893 if (!dispatch_signal(SIGINT
))
2895 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2896 rec
->ExceptionCode
= CONTROL_C_EXIT
;
2901 /**********************************************************************
2904 * Handler for SIGABRT.
2906 static void abrt_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2908 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2909 rec
->ExceptionCode
= EXCEPTION_WINE_ASSERTION
;
2910 rec
->ExceptionFlags
= EH_NONCONTINUABLE
;
2914 /**********************************************************************
2917 * Handler for SIGQUIT.
2919 static void quit_handler( int signal
, siginfo_t
*siginfo
, void *ucontext
)
2925 /**********************************************************************
2928 * Handler for SIGUSR1, used to signal a thread that it got suspended.
2930 static void usr1_handler( int signal
, siginfo_t
*siginfo
, void *ucontext
)
2934 save_context( &context
, ucontext
);
2935 wait_suspend( &context
);
2936 restore_context( &context
, ucontext
);
2940 /***********************************************************************
2941 * __wine_set_signal_handler (NTDLL.@)
2943 int CDECL
__wine_set_signal_handler(unsigned int sig
, wine_signal_handler wsh
)
2945 if (sig
>= sizeof(handlers
) / sizeof(handlers
[0])) return -1;
2946 if (handlers
[sig
] != NULL
) return -2;
2947 handlers
[sig
] = wsh
;
2952 /**********************************************************************
2953 * signal_alloc_thread
2955 NTSTATUS
signal_alloc_thread( TEB
**teb
)
2957 static size_t sigstack_zero_bits
;
2961 if (!sigstack_zero_bits
)
2963 size_t min_size
= teb_size
+ max( MINSIGSTKSZ
, 8192 );
2964 /* find the first power of two not smaller than min_size */
2965 sigstack_zero_bits
= 12;
2966 while ((1u << sigstack_zero_bits
) < min_size
) sigstack_zero_bits
++;
2967 signal_stack_size
= (1 << sigstack_zero_bits
) - teb_size
;
2968 assert( sizeof(TEB
) <= teb_size
);
2971 size
= 1 << sigstack_zero_bits
;
2973 if (!(status
= NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb
, sigstack_zero_bits
,
2974 &size
, MEM_COMMIT
| MEM_TOP_DOWN
, PAGE_READWRITE
)))
2976 (*teb
)->Tib
.Self
= &(*teb
)->Tib
;
2977 (*teb
)->Tib
.ExceptionList
= (void *)~0UL;
2983 /**********************************************************************
2984 * signal_free_thread
2986 void signal_free_thread( TEB
*teb
)
2990 NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb
, &size
, MEM_RELEASE
);
2994 /**********************************************************************
2997 static void *mac_thread_gsbase(void)
2999 static int gsbase_offset
= -1;
3002 if (gsbase_offset
< 0)
3004 /* Search for the array of TLS slots within the pthread data structure.
3005 That's what the macOS pthread implementation uses for gsbase. */
3006 const void* const sentinel1
= (const void*)0x2bffb6b4f11228ae;
3007 const void* const sentinel2
= (const void*)0x0845a7ff6ab76707;
3010 const void** p
= (const void**)pthread_self();
3014 if ((rc
= pthread_key_create(&key
, NULL
)))
3016 ERR("failed to create sentinel key for gsbase search: %d\n", rc
);
3020 pthread_setspecific(key
, sentinel1
);
3022 for (i
= key
+ 1; i
< 2000; i
++) /* arbitrary limit */
3024 if (p
[i
] == sentinel1
)
3026 pthread_setspecific(key
, sentinel2
);
3028 if (p
[i
] == sentinel2
)
3030 gsbase_offset
= (i
- key
) * sizeof(*p
);
3034 pthread_setspecific(key
, sentinel1
);
3038 pthread_key_delete(key
);
3043 ret
= (char*)pthread_self() + gsbase_offset
;
3044 TRACE("pthread_self() %p + offset 0x%08x -> gsbase %p\n", pthread_self(), gsbase_offset
, ret
);
3049 ERR("failed to locate gsbase; won't be able to poke ThreadLocalStoragePointer into pthread TLS; expect crashes\n");
3057 /**********************************************************************
3058 * signal_init_thread
3060 void signal_init_thread( TEB
*teb
)
3062 const WORD fpu_cw
= 0x27f;
3065 #if defined __linux__
3066 arch_prctl( ARCH_SET_GS
, teb
);
3067 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
3068 amd64_set_gsbase( teb
);
3069 #elif defined(__NetBSD__)
3070 sysarch( X86_64_SET_GSBASE
, &teb
);
3071 #elif defined (__APPLE__)
3072 __asm__
volatile (".byte 0x65\n\tmovq %0,%c1"
3074 : "r" (teb
->Tib
.Self
), "n" (FIELD_OFFSET(TEB
, Tib
.Self
)));
3075 __asm__
volatile (".byte 0x65\n\tmovq %0,%c1"
3077 : "r" (teb
->ThreadLocalStoragePointer
), "n" (FIELD_OFFSET(TEB
, ThreadLocalStoragePointer
)));
3079 /* alloc_tls_slot() needs to poke a value to an address relative to each
3080 thread's gsbase. Have each thread record its gsbase pointer into its
3081 TEB so alloc_tls_slot() can find it. */
3082 teb
->Reserved5
[0] = mac_thread_gsbase();
3084 # error Please define setting %gs for your architecture
3087 ss
.ss_sp
= (char *)teb
+ teb_size
;
3088 ss
.ss_size
= signal_stack_size
;
3090 if (sigaltstack(&ss
, NULL
) == -1) perror( "sigaltstack" );
3093 __asm__
volatile ("fninit; fldcw %0" : : "m" (fpu_cw
));
3095 FIXME("FPU setup not implemented for this platform.\n");
3099 /**********************************************************************
3100 * signal_init_process
3102 void signal_init_process(void)
3104 struct sigaction sig_act
;
3106 sig_act
.sa_mask
= server_block_set
;
3107 sig_act
.sa_flags
= SA_RESTART
| SA_SIGINFO
| SA_ONSTACK
;
3109 sig_act
.sa_sigaction
= int_handler
;
3110 if (sigaction( SIGINT
, &sig_act
, NULL
) == -1) goto error
;
3111 sig_act
.sa_sigaction
= fpe_handler
;
3112 if (sigaction( SIGFPE
, &sig_act
, NULL
) == -1) goto error
;
3113 sig_act
.sa_sigaction
= abrt_handler
;
3114 if (sigaction( SIGABRT
, &sig_act
, NULL
) == -1) goto error
;
3115 sig_act
.sa_sigaction
= quit_handler
;
3116 if (sigaction( SIGQUIT
, &sig_act
, NULL
) == -1) goto error
;
3117 sig_act
.sa_sigaction
= usr1_handler
;
3118 if (sigaction( SIGUSR1
, &sig_act
, NULL
) == -1) goto error
;
3120 sig_act
.sa_sigaction
= segv_handler
;
3121 if (sigaction( SIGSEGV
, &sig_act
, NULL
) == -1) goto error
;
3122 if (sigaction( SIGILL
, &sig_act
, NULL
) == -1) goto error
;
3124 if (sigaction( SIGBUS
, &sig_act
, NULL
) == -1) goto error
;
3128 sig_act
.sa_sigaction
= trap_handler
;
3129 if (sigaction( SIGTRAP
, &sig_act
, NULL
) == -1) goto error
;
3134 perror("sigaction");
3139 /**********************************************************************
3140 * RtlAddFunctionTable (NTDLL.@)
3142 BOOLEAN CDECL
RtlAddFunctionTable( RUNTIME_FUNCTION
*table
, DWORD count
, DWORD64 addr
)
3144 struct dynamic_unwind_entry
*entry
;
3146 TRACE( "%p %u %lx\n", table
, count
, addr
);
3148 /* NOTE: Windows doesn't check if table is aligned or a NULL pointer */
3150 entry
= RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry
) );
3155 entry
->size
= table
[count
- 1].EndAddress
;
3156 entry
->table
= table
;
3157 entry
->table_size
= count
* sizeof(RUNTIME_FUNCTION
);
3158 entry
->callback
= NULL
;
3159 entry
->context
= NULL
;
3161 RtlEnterCriticalSection( &dynamic_unwind_section
);
3162 list_add_tail( &dynamic_unwind_list
, &entry
->entry
);
3163 RtlLeaveCriticalSection( &dynamic_unwind_section
);
3169 /**********************************************************************
3170 * RtlInstallFunctionTableCallback (NTDLL.@)
3172 BOOLEAN CDECL
RtlInstallFunctionTableCallback( DWORD64 table
, DWORD64 base
, DWORD length
,
3173 PGET_RUNTIME_FUNCTION_CALLBACK callback
, PVOID context
, PCWSTR dll
)
3175 struct dynamic_unwind_entry
*entry
;
3177 TRACE( "%lx %lx %d %p %p %s\n", table
, base
, length
, callback
, context
, wine_dbgstr_w(dll
) );
3179 /* NOTE: Windows doesn't check if the provided callback is a NULL pointer */
3181 /* both low-order bits must be set */
3182 if ((table
& 0x3) != 0x3)
3185 entry
= RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry
) );
3190 entry
->size
= length
;
3191 entry
->table
= (RUNTIME_FUNCTION
*)table
;
3192 entry
->table_size
= 0;
3193 entry
->callback
= callback
;
3194 entry
->context
= context
;
3196 RtlEnterCriticalSection( &dynamic_unwind_section
);
3197 list_add_tail( &dynamic_unwind_list
, &entry
->entry
);
3198 RtlLeaveCriticalSection( &dynamic_unwind_section
);
3204 /**********************************************************************
3205 * RtlDeleteFunctionTable (NTDLL.@)
3207 BOOLEAN CDECL
RtlDeleteFunctionTable( RUNTIME_FUNCTION
*table
)
3209 struct dynamic_unwind_entry
*entry
, *to_free
= NULL
;
3211 TRACE( "%p\n", table
);
3213 RtlEnterCriticalSection( &dynamic_unwind_section
);
3214 LIST_FOR_EACH_ENTRY( entry
, &dynamic_unwind_list
, struct dynamic_unwind_entry
, entry
)
3216 if (entry
->table
== table
)
3219 list_remove( &entry
->entry
);
3223 RtlLeaveCriticalSection( &dynamic_unwind_section
);
3228 RtlFreeHeap( GetProcessHeap(), 0, to_free
);
3233 /**********************************************************************
3234 * RtlLookupFunctionEntry (NTDLL.@)
3236 PRUNTIME_FUNCTION WINAPI
RtlLookupFunctionEntry( ULONG64 pc
, ULONG64
*base
, UNWIND_HISTORY_TABLE
*table
)
3239 RUNTIME_FUNCTION
*func
;
3241 /* FIXME: should use the history table to make things faster */
3243 func
= lookup_function_info( pc
, base
, &module
);
3248 WARN( "no exception table found in module %p pc %lx\n", module
->BaseAddress
, pc
);
3250 WARN( "module not found for %lx\n", pc
);
3256 static ULONG64
get_int_reg( CONTEXT
*context
, int reg
)
3258 return *(&context
->Rax
+ reg
);
3261 static void set_int_reg( CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
, int reg
, ULONG64
*val
)
3263 *(&context
->Rax
+ reg
) = *val
;
3264 if (ctx_ptr
) ctx_ptr
->u2
.IntegerContext
[reg
] = val
;
3267 static void set_float_reg( CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
, int reg
, M128A
*val
)
3269 *(&context
->u
.s
.Xmm0
+ reg
) = *val
;
3270 if (ctx_ptr
) ctx_ptr
->u
.FloatingContext
[reg
] = val
;
3273 static int get_opcode_size( struct opcode op
)
3277 case UWOP_ALLOC_LARGE
:
3278 return 2 + (op
.info
!= 0);
3279 case UWOP_SAVE_NONVOL
:
3280 case UWOP_SAVE_XMM128
:
3282 case UWOP_SAVE_NONVOL_FAR
:
3283 case UWOP_SAVE_XMM128_FAR
:
3290 static BOOL
is_inside_epilog( BYTE
*pc
, ULONG64 base
, const RUNTIME_FUNCTION
*function
)
3292 /* add or lea must be the first instruction, and it must have a rex.W prefix */
3293 if ((pc
[0] & 0xf8) == 0x48)
3297 case 0x81: /* add $nnnn,%rsp */
3298 if (pc
[0] == 0x48 && pc
[2] == 0xc4)
3304 case 0x83: /* add $n,%rsp */
3305 if (pc
[0] == 0x48 && pc
[2] == 0xc4)
3311 case 0x8d: /* lea n(reg),%rsp */
3312 if (pc
[0] & 0x06) return FALSE
; /* rex.RX must be cleared */
3313 if (((pc
[2] >> 3) & 7) != 4) return FALSE
; /* dest reg mus be %rsp */
3314 if ((pc
[2] & 7) == 4) return FALSE
; /* no SIB byte allowed */
3315 if ((pc
[2] >> 6) == 1) /* 8-bit offset */
3320 if ((pc
[2] >> 6) == 2) /* 32-bit offset */
3329 /* now check for various pop instructions */
3333 if ((*pc
& 0xf0) == 0x40) pc
++; /* rex prefix */
3337 case 0x58: /* pop %rax/%r8 */
3338 case 0x59: /* pop %rcx/%r9 */
3339 case 0x5a: /* pop %rdx/%r10 */
3340 case 0x5b: /* pop %rbx/%r11 */
3341 case 0x5c: /* pop %rsp/%r12 */
3342 case 0x5d: /* pop %rbp/%r13 */
3343 case 0x5e: /* pop %rsi/%r14 */
3344 case 0x5f: /* pop %rdi/%r15 */
3347 case 0xc2: /* ret $nn */
3348 case 0xc3: /* ret */
3350 case 0xe9: /* jmp nnnn */
3351 pc
+= 5 + *(LONG
*)(pc
+ 1);
3352 if (pc
- (BYTE
*)base
>= function
->BeginAddress
&& pc
- (BYTE
*)base
< function
->EndAddress
)
3355 case 0xeb: /* jmp n */
3356 pc
+= 2 + (signed char)pc
[1];
3357 if (pc
- (BYTE
*)base
>= function
->BeginAddress
&& pc
- (BYTE
*)base
< function
->EndAddress
)
3360 case 0xf3: /* rep; ret (for amd64 prediction bug) */
3361 return pc
[1] == 0xc3;
3367 /* execute a function epilog, which must have been validated with is_inside_epilog() */
3368 static void interpret_epilog( BYTE
*pc
, CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
)
3374 if ((*pc
& 0xf0) == 0x40) rex
= *pc
++ & 0x0f; /* rex prefix */
3378 case 0x58: /* pop %rax/r8 */
3379 case 0x59: /* pop %rcx/r9 */
3380 case 0x5a: /* pop %rdx/r10 */
3381 case 0x5b: /* pop %rbx/r11 */
3382 case 0x5c: /* pop %rsp/r12 */
3383 case 0x5d: /* pop %rbp/r13 */
3384 case 0x5e: /* pop %rsi/r14 */
3385 case 0x5f: /* pop %rdi/r15 */
3386 set_int_reg( context
, ctx_ptr
, *pc
- 0x58 + (rex
& 1) * 8, (ULONG64
*)context
->Rsp
);
3387 context
->Rsp
+= sizeof(ULONG64
);
3390 case 0x81: /* add $nnnn,%rsp */
3391 context
->Rsp
+= *(LONG
*)(pc
+ 2);
3392 pc
+= 2 + sizeof(LONG
);
3394 case 0x83: /* add $n,%rsp */
3395 context
->Rsp
+= (signed char)pc
[2];
3399 if ((pc
[1] >> 6) == 1) /* lea n(reg),%rsp */
3401 context
->Rsp
= get_int_reg( context
, (pc
[1] & 7) + (rex
& 1) * 8 ) + (signed char)pc
[2];
3404 else /* lea nnnn(reg),%rsp */
3406 context
->Rsp
= get_int_reg( context
, (pc
[1] & 7) + (rex
& 1) * 8 ) + *(LONG
*)(pc
+ 2);
3407 pc
+= 2 + sizeof(LONG
);
3410 case 0xc2: /* ret $nn */
3411 context
->Rip
= *(ULONG64
*)context
->Rsp
;
3412 context
->Rsp
+= sizeof(ULONG64
) + *(WORD
*)(pc
+ 1);
3414 case 0xc3: /* ret */
3415 case 0xf3: /* rep; ret */
3416 context
->Rip
= *(ULONG64
*)context
->Rsp
;
3417 context
->Rsp
+= sizeof(ULONG64
);
3419 case 0xe9: /* jmp nnnn */
3420 pc
+= 5 + *(LONG
*)(pc
+ 1);
3422 case 0xeb: /* jmp n */
3423 pc
+= 2 + (signed char)pc
[1];
3430 /**********************************************************************
3431 * RtlVirtualUnwind (NTDLL.@)
3433 PVOID WINAPI
RtlVirtualUnwind( ULONG type
, ULONG64 base
, ULONG64 pc
,
3434 RUNTIME_FUNCTION
*function
, CONTEXT
*context
,
3435 PVOID
*data
, ULONG64
*frame_ret
,
3436 KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
)
3438 union handler_data
*handler_data
;
3440 struct UNWIND_INFO
*info
;
3441 unsigned int i
, prolog_offset
;
3443 TRACE( "type %x rip %lx rsp %lx\n", type
, pc
, context
->Rsp
);
3444 if (TRACE_ON(seh
)) dump_unwind_info( base
, function
);
3446 frame
= *frame_ret
= context
->Rsp
;
3449 info
= (struct UNWIND_INFO
*)((char *)base
+ function
->UnwindData
);
3450 handler_data
= (union handler_data
*)&info
->opcodes
[(info
->count
+ 1) & ~1];
3452 if (info
->version
!= 1)
3454 FIXME( "unknown unwind info version %u at %p\n", info
->version
, info
);
3458 if (info
->frame_reg
)
3459 frame
= get_int_reg( context
, info
->frame_reg
) - info
->frame_offset
* 16;
3461 /* check if in prolog */
3462 if (pc
>= base
+ function
->BeginAddress
&& pc
< base
+ function
->BeginAddress
+ info
->prolog
)
3464 prolog_offset
= pc
- base
- function
->BeginAddress
;
3469 if (is_inside_epilog( (BYTE
*)pc
, base
, function
))
3471 interpret_epilog( (BYTE
*)pc
, context
, ctx_ptr
);
3477 for (i
= 0; i
< info
->count
; i
+= get_opcode_size(info
->opcodes
[i
]))
3479 if (prolog_offset
< info
->opcodes
[i
].offset
) continue; /* skip it */
3481 switch (info
->opcodes
[i
].code
)
3483 case UWOP_PUSH_NONVOL
: /* pushq %reg */
3484 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, (ULONG64
*)context
->Rsp
);
3485 context
->Rsp
+= sizeof(ULONG64
);
3487 case UWOP_ALLOC_LARGE
: /* subq $nn,%rsp */
3488 if (info
->opcodes
[i
].info
) context
->Rsp
+= *(DWORD
*)&info
->opcodes
[i
+1];
3489 else context
->Rsp
+= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
3491 case UWOP_ALLOC_SMALL
: /* subq $n,%rsp */
3492 context
->Rsp
+= (info
->opcodes
[i
].info
+ 1) * 8;
3494 case UWOP_SET_FPREG
: /* leaq nn(%rsp),%framereg */
3495 context
->Rsp
= *frame_ret
= frame
;
3497 case UWOP_SAVE_NONVOL
: /* movq %reg,n(%rsp) */
3498 off
= frame
+ *(USHORT
*)&info
->opcodes
[i
+1] * 8;
3499 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, (ULONG64
*)off
);
3501 case UWOP_SAVE_NONVOL_FAR
: /* movq %reg,nn(%rsp) */
3502 off
= frame
+ *(DWORD
*)&info
->opcodes
[i
+1];
3503 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, (ULONG64
*)off
);
3505 case UWOP_SAVE_XMM128
: /* movaps %xmmreg,n(%rsp) */
3506 off
= frame
+ *(USHORT
*)&info
->opcodes
[i
+1] * 16;
3507 set_float_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, (M128A
*)off
);
3509 case UWOP_SAVE_XMM128_FAR
: /* movaps %xmmreg,nn(%rsp) */
3510 off
= frame
+ *(DWORD
*)&info
->opcodes
[i
+1];
3511 set_float_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, (M128A
*)off
);
3513 case UWOP_PUSH_MACHFRAME
:
3514 FIXME( "PUSH_MACHFRAME %u\n", info
->opcodes
[i
].info
);
3517 FIXME( "unknown code %u\n", info
->opcodes
[i
].code
);
3522 if (!(info
->flags
& UNW_FLAG_CHAININFO
)) break;
3523 function
= &handler_data
->chain
; /* restart with the chained info */
3526 /* now pop return address */
3527 context
->Rip
= *(ULONG64
*)context
->Rsp
;
3528 context
->Rsp
+= sizeof(ULONG64
);
3530 if (!(info
->flags
& type
)) return NULL
; /* no matching handler */
3531 if (prolog_offset
!= ~0) return NULL
; /* inside prolog */
3533 *data
= &handler_data
->handler
+ 1;
3534 return (char *)base
+ handler_data
->handler
;
3537 struct unwind_exception_frame
3539 EXCEPTION_REGISTRATION_RECORD frame
;
3540 DISPATCHER_CONTEXT
*dispatch
;
3543 /**********************************************************************
3544 * unwind_exception_handler
3546 * Handler for exceptions happening while calling an unwind handler.
3548 static DWORD
unwind_exception_handler( EXCEPTION_RECORD
*rec
, EXCEPTION_REGISTRATION_RECORD
*frame
,
3549 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
3551 struct unwind_exception_frame
*unwind_frame
= (struct unwind_exception_frame
*)frame
;
3552 DISPATCHER_CONTEXT
*dispatch
= (DISPATCHER_CONTEXT
*)dispatcher
;
3554 /* copy the original dispatcher into the current one, except for the TargetIp */
3555 dispatch
->ControlPc
= unwind_frame
->dispatch
->ControlPc
;
3556 dispatch
->ImageBase
= unwind_frame
->dispatch
->ImageBase
;
3557 dispatch
->FunctionEntry
= unwind_frame
->dispatch
->FunctionEntry
;
3558 dispatch
->EstablisherFrame
= unwind_frame
->dispatch
->EstablisherFrame
;
3559 dispatch
->ContextRecord
= unwind_frame
->dispatch
->ContextRecord
;
3560 dispatch
->LanguageHandler
= unwind_frame
->dispatch
->LanguageHandler
;
3561 dispatch
->HandlerData
= unwind_frame
->dispatch
->HandlerData
;
3562 dispatch
->HistoryTable
= unwind_frame
->dispatch
->HistoryTable
;
3563 dispatch
->ScopeIndex
= unwind_frame
->dispatch
->ScopeIndex
;
3564 TRACE( "detected collided unwind\n" );
3565 return ExceptionCollidedUnwind
;
3568 /**********************************************************************
3569 * call_unwind_handler
3571 * Call a single unwind handler.
3573 static DWORD
call_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
)
3575 struct unwind_exception_frame frame
;
3578 frame
.frame
.Handler
= unwind_exception_handler
;
3579 frame
.dispatch
= dispatch
;
3580 __wine_push_frame( &frame
.frame
);
3582 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
3583 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
3584 res
= dispatch
->LanguageHandler( rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
3585 TRACE( "handler %p returned %x\n", dispatch
->LanguageHandler
, res
);
3587 __wine_pop_frame( &frame
.frame
);
3591 case ExceptionContinueSearch
:
3592 case ExceptionCollidedUnwind
:
3595 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
3603 /**********************************************************************
3604 * call_teb_unwind_handler
3606 * Call a single unwind handler from the TEB chain.
3608 static DWORD
call_teb_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
,
3609 EXCEPTION_REGISTRATION_RECORD
*teb_frame
)
3613 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
3614 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, dispatch
);
3615 res
= teb_frame
->Handler( rec
, teb_frame
, dispatch
->ContextRecord
, (EXCEPTION_REGISTRATION_RECORD
**)dispatch
);
3616 TRACE( "handler at %p returned %u\n", teb_frame
->Handler
, res
);
3620 case ExceptionContinueSearch
:
3621 case ExceptionCollidedUnwind
:
3624 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
3632 /**********************************************************************
3633 * call_consolidate_callback
3635 * Wrapper function to call a consolidate callback from a fake frame.
3636 * If the callback executes RtlUnwindEx (like for example done in C++ handlers),
3637 * we have to skip all frames which were already processed. To do that we
3638 * trick the unwinding functions into thinking the call came from somewhere
3639 * else. All CFI instructions are either DW_CFA_def_cfa_expression or
3640 * DW_CFA_expression, and the expressions have the following format:
3642 * DW_OP_breg6; sleb128 0x10 | Load %rbp + 0x10
3643 * DW_OP_deref | Get *(%rbp + 0x10) == context
3644 * DW_OP_plus_uconst; uleb128 <OFFSET> | Add offset to get struct member
3645 * [DW_OP_deref] | Dereference, only for CFA
3647 extern void * WINAPI
call_consolidate_callback( CONTEXT
*context
,
3648 void *(CALLBACK
*callback
)(EXCEPTION_RECORD
*),
3649 EXCEPTION_RECORD
*rec
);
3650 __ASM_GLOBAL_FUNC( call_consolidate_callback
,
3652 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
3653 __ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
3654 "movq %rsp,%rbp\n\t"
3655 __ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
3656 "subq $0x20,%rsp\n\t"
3657 "movq %rcx,0x10(%rbp)\n\t"
3658 __ASM_CFI(".cfi_remember_state\n\t")
3659 __ASM_CFI(".cfi_escape 0x0f,0x07,0x76,0x10,0x06,0x23,0x98,0x01,0x06\n\t") /* CFA */
3660 __ASM_CFI(".cfi_escape 0x10,0x03,0x06,0x76,0x10,0x06,0x23,0x90,0x01\n\t") /* %rbx */
3661 __ASM_CFI(".cfi_escape 0x10,0x04,0x06,0x76,0x10,0x06,0x23,0xa8,0x01\n\t") /* %rsi */
3662 __ASM_CFI(".cfi_escape 0x10,0x05,0x06,0x76,0x10,0x06,0x23,0xb0,0x01\n\t") /* %rdi */
3663 __ASM_CFI(".cfi_escape 0x10,0x06,0x06,0x76,0x10,0x06,0x23,0xa0,0x01\n\t") /* %rbp */
3664 __ASM_CFI(".cfi_escape 0x10,0x0c,0x06,0x76,0x10,0x06,0x23,0xd8,0x01\n\t") /* %r12 */
3665 __ASM_CFI(".cfi_escape 0x10,0x0d,0x06,0x76,0x10,0x06,0x23,0xe0,0x01\n\t") /* %r13 */
3666 __ASM_CFI(".cfi_escape 0x10,0x0e,0x06,0x76,0x10,0x06,0x23,0xe8,0x01\n\t") /* %r14 */
3667 __ASM_CFI(".cfi_escape 0x10,0x0f,0x06,0x76,0x10,0x06,0x23,0xf0,0x01\n\t") /* %r15 */
3668 __ASM_CFI(".cfi_escape 0x10,0x10,0x06,0x76,0x10,0x06,0x23,0xf8,0x01\n\t") /* %rip */
3669 __ASM_CFI(".cfi_escape 0x10,0x17,0x06,0x76,0x10,0x06,0x23,0x80,0x04\n\t") /* %xmm6 */
3670 __ASM_CFI(".cfi_escape 0x10,0x18,0x06,0x76,0x10,0x06,0x23,0x90,0x04\n\t") /* %xmm7 */
3671 __ASM_CFI(".cfi_escape 0x10,0x19,0x06,0x76,0x10,0x06,0x23,0xa0,0x04\n\t") /* %xmm8 */
3672 __ASM_CFI(".cfi_escape 0x10,0x1a,0x06,0x76,0x10,0x06,0x23,0xb0,0x04\n\t") /* %xmm9 */
3673 __ASM_CFI(".cfi_escape 0x10,0x1b,0x06,0x76,0x10,0x06,0x23,0xc0,0x04\n\t") /* %xmm10 */
3674 __ASM_CFI(".cfi_escape 0x10,0x1c,0x06,0x76,0x10,0x06,0x23,0xd0,0x04\n\t") /* %xmm11 */
3675 __ASM_CFI(".cfi_escape 0x10,0x1d,0x06,0x76,0x10,0x06,0x23,0xe0,0x04\n\t") /* %xmm12 */
3676 __ASM_CFI(".cfi_escape 0x10,0x1e,0x06,0x76,0x10,0x06,0x23,0xf0,0x04\n\t") /* %xmm13 */
3677 __ASM_CFI(".cfi_escape 0x10,0x1f,0x06,0x76,0x10,0x06,0x23,0x80,0x05\n\t") /* %xmm14 */
3678 __ASM_CFI(".cfi_escape 0x10,0x20,0x06,0x76,0x10,0x06,0x23,0x90,0x05\n\t") /* %xmm15 */
3681 __ASM_CFI(".cfi_restore_state\n\t")
3682 "movq %rbp,%rsp\n\t"
3683 __ASM_CFI(".cfi_def_cfa_register %rsp\n\t")
3685 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
3686 __ASM_CFI(".cfi_same_value %rbp\n\t")
3689 /*******************************************************************
3690 * RtlRestoreContext (NTDLL.@)
3692 void WINAPI
RtlRestoreContext( CONTEXT
*context
, EXCEPTION_RECORD
*rec
)
3694 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
3696 if (rec
&& rec
->ExceptionCode
== STATUS_LONGJUMP
&& rec
->NumberParameters
>= 1)
3698 struct MSVCRT_JUMP_BUFFER
*jmp
= (struct MSVCRT_JUMP_BUFFER
*)rec
->ExceptionInformation
[0];
3699 context
->Rbx
= jmp
->Rbx
;
3700 context
->Rsp
= jmp
->Rsp
;
3701 context
->Rbp
= jmp
->Rbp
;
3702 context
->Rsi
= jmp
->Rsi
;
3703 context
->Rdi
= jmp
->Rdi
;
3704 context
->R12
= jmp
->R12
;
3705 context
->R13
= jmp
->R13
;
3706 context
->R14
= jmp
->R14
;
3707 context
->R15
= jmp
->R15
;
3708 context
->Rip
= jmp
->Rip
;
3709 context
->u
.s
.Xmm6
= jmp
->Xmm6
;
3710 context
->u
.s
.Xmm7
= jmp
->Xmm7
;
3711 context
->u
.s
.Xmm8
= jmp
->Xmm8
;
3712 context
->u
.s
.Xmm9
= jmp
->Xmm9
;
3713 context
->u
.s
.Xmm10
= jmp
->Xmm10
;
3714 context
->u
.s
.Xmm11
= jmp
->Xmm11
;
3715 context
->u
.s
.Xmm12
= jmp
->Xmm12
;
3716 context
->u
.s
.Xmm13
= jmp
->Xmm13
;
3717 context
->u
.s
.Xmm14
= jmp
->Xmm14
;
3718 context
->u
.s
.Xmm15
= jmp
->Xmm15
;
3720 else if (rec
&& rec
->ExceptionCode
== STATUS_UNWIND_CONSOLIDATE
&& rec
->NumberParameters
>= 1)
3722 PVOID (CALLBACK
*consolidate
)(EXCEPTION_RECORD
*) = (void *)rec
->ExceptionInformation
[0];
3723 TRACE( "calling consolidate callback %p (rec=%p)\n", consolidate
, rec
);
3724 context
->Rip
= (ULONG64
)call_consolidate_callback( context
, consolidate
, rec
);
3727 /* hack: remove no longer accessible TEB frames */
3728 while ((ULONG64
)teb_frame
< context
->Rsp
)
3730 TRACE( "removing TEB frame: %p\n", teb_frame
);
3731 teb_frame
= __wine_pop_frame( teb_frame
);
3734 TRACE( "returning to %lx stack %lx\n", context
->Rip
, context
->Rsp
);
3735 set_cpu_context( context
);
3739 /*******************************************************************
3740 * RtlUnwindEx (NTDLL.@)
3742 void WINAPI
RtlUnwindEx( PVOID end_frame
, PVOID target_ip
, EXCEPTION_RECORD
*rec
,
3743 PVOID retval
, CONTEXT
*context
, UNWIND_HISTORY_TABLE
*table
)
3745 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
3746 EXCEPTION_RECORD record
;
3747 DISPATCHER_CONTEXT dispatch
;
3748 CONTEXT new_context
;
3753 RtlCaptureContext( context
);
3754 new_context
= *context
;
3756 /* build an exception record, if we do not have one */
3759 record
.ExceptionCode
= STATUS_UNWIND
;
3760 record
.ExceptionFlags
= 0;
3761 record
.ExceptionRecord
= NULL
;
3762 record
.ExceptionAddress
= (void *)context
->Rip
;
3763 record
.NumberParameters
= 0;
3767 rec
->ExceptionFlags
|= EH_UNWINDING
| (end_frame
? 0 : EH_EXIT_UNWIND
);
3769 TRACE( "code=%x flags=%x end_frame=%p target_ip=%p rip=%016lx\n",
3770 rec
->ExceptionCode
, rec
->ExceptionFlags
, end_frame
, target_ip
, context
->Rip
);
3771 for (i
= 0; i
< min( EXCEPTION_MAXIMUM_PARAMETERS
, rec
->NumberParameters
); i
++)
3772 TRACE( " info[%d]=%016lx\n", i
, rec
->ExceptionInformation
[i
] );
3773 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
3774 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
3775 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
3776 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
3777 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
3778 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
3779 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
3780 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
3782 dispatch
.EstablisherFrame
= context
->Rsp
;
3783 dispatch
.TargetIp
= (ULONG64
)target_ip
;
3784 dispatch
.ContextRecord
= context
;
3785 dispatch
.HistoryTable
= table
;
3789 /* FIXME: should use the history table to make things faster */
3791 dispatch
.ImageBase
= 0;
3792 dispatch
.ScopeIndex
= 0;
3793 dispatch
.ControlPc
= context
->Rip
;
3795 /* first look for PE exception information */
3797 if ((dispatch
.FunctionEntry
= lookup_function_info( context
->Rip
, &dispatch
.ImageBase
, &module
)))
3799 dispatch
.LanguageHandler
= RtlVirtualUnwind( UNW_FLAG_UHANDLER
, dispatch
.ImageBase
,
3800 context
->Rip
, dispatch
.FunctionEntry
,
3801 &new_context
, &dispatch
.HandlerData
,
3802 &dispatch
.EstablisherFrame
, NULL
);
3806 /* then look for host system exception information */
3808 if (!module
|| (module
->Flags
& LDR_WINE_INTERNAL
))
3810 BOOL got_info
= FALSE
;
3811 struct dwarf_eh_bases bases
;
3812 const struct dwarf_fde
*fde
= _Unwind_Find_FDE( (void *)(context
->Rip
- 1), &bases
);
3816 status
= dwarf_virtual_unwind( context
->Rip
, &dispatch
.EstablisherFrame
, &new_context
, fde
,
3817 &bases
, &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
3818 if (status
!= STATUS_SUCCESS
) raise_status( status
, rec
);
3821 #ifdef HAVE_LIBUNWIND_H
3824 status
= libunwind_virtual_unwind( context
->Rip
, &got_info
, &dispatch
.EstablisherFrame
, &new_context
,
3825 &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
3826 if (status
!= STATUS_SUCCESS
) raise_status( status
, rec
);
3832 dispatch
.FunctionEntry
= NULL
;
3833 if (dispatch
.LanguageHandler
&& !module
)
3835 FIXME( "calling personality routine in system library not supported yet\n" );
3836 dispatch
.LanguageHandler
= NULL
;
3841 else WARN( "exception data not found in %s\n", debugstr_w(module
->BaseDllName
.Buffer
) );
3843 /* no exception information, treat as a leaf function */
3845 new_context
.Rip
= *(ULONG64
*)context
->Rsp
;
3846 new_context
.Rsp
= context
->Rsp
+ sizeof(ULONG64
);
3847 dispatch
.EstablisherFrame
= new_context
.Rsp
;
3848 dispatch
.LanguageHandler
= NULL
;
3851 if (!dispatch
.EstablisherFrame
) break;
3853 if (is_inside_signal_stack( (void *)dispatch
.EstablisherFrame
))
3855 TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch
.EstablisherFrame
,
3856 get_signal_stack(), (char *)get_signal_stack() + signal_stack_size
);
3857 *context
= new_context
;
3861 if ((dispatch
.EstablisherFrame
& 7) ||
3862 dispatch
.EstablisherFrame
< (ULONG64
)NtCurrentTeb()->Tib
.StackLimit
||
3863 dispatch
.EstablisherFrame
> (ULONG64
)NtCurrentTeb()->Tib
.StackBase
)
3865 ERR( "invalid frame %lx (%p-%p)\n", dispatch
.EstablisherFrame
,
3866 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
3867 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
3871 if (dispatch
.LanguageHandler
)
3873 if (end_frame
&& (dispatch
.EstablisherFrame
> (ULONG64
)end_frame
))
3875 ERR( "invalid end frame %lx/%p\n", dispatch
.EstablisherFrame
, end_frame
);
3876 raise_status( STATUS_INVALID_UNWIND_TARGET
, rec
);
3878 if (dispatch
.EstablisherFrame
== (ULONG64
)end_frame
) rec
->ExceptionFlags
|= EH_TARGET_UNWIND
;
3879 if (call_unwind_handler( rec
, &dispatch
) == ExceptionCollidedUnwind
)
3883 *context
= new_context
= *dispatch
.ContextRecord
;
3884 dispatch
.ContextRecord
= context
;
3885 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
3886 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
3887 &new_context
, NULL
, &frame
, NULL
);
3888 rec
->ExceptionFlags
|= EH_COLLIDED_UNWIND
;
3891 rec
->ExceptionFlags
&= ~EH_COLLIDED_UNWIND
;
3893 else /* hack: call builtin handlers registered in the tib list */
3895 DWORD64 backup_frame
= dispatch
.EstablisherFrame
;
3896 while ((ULONG64
)teb_frame
< new_context
.Rsp
&& (ULONG64
)teb_frame
< (ULONG64
)end_frame
)
3898 TRACE( "found builtin frame %p handler %p\n", teb_frame
, teb_frame
->Handler
);
3899 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
3900 if (call_teb_unwind_handler( rec
, &dispatch
, teb_frame
) == ExceptionCollidedUnwind
)
3904 teb_frame
= __wine_pop_frame( teb_frame
);
3906 *context
= new_context
= *dispatch
.ContextRecord
;
3907 dispatch
.ContextRecord
= context
;
3908 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
3909 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
3910 &new_context
, NULL
, &frame
, NULL
);
3911 rec
->ExceptionFlags
|= EH_COLLIDED_UNWIND
;
3914 teb_frame
= __wine_pop_frame( teb_frame
);
3916 if ((ULONG64
)teb_frame
== (ULONG64
)end_frame
&& (ULONG64
)end_frame
< new_context
.Rsp
) break;
3917 dispatch
.EstablisherFrame
= backup_frame
;
3920 if (dispatch
.EstablisherFrame
== (ULONG64
)end_frame
) break;
3921 *context
= new_context
;
3924 context
->Rax
= (ULONG64
)retval
;
3925 context
->Rip
= (ULONG64
)target_ip
;
3926 RtlRestoreContext(context
, rec
);
3930 /*******************************************************************
3931 * RtlUnwind (NTDLL.@)
3933 void WINAPI
RtlUnwind( void *frame
, void *target_ip
, EXCEPTION_RECORD
*rec
, void *retval
)
3936 RtlUnwindEx( frame
, target_ip
, rec
, retval
, &context
, NULL
);
3940 /*******************************************************************
3941 * _local_unwind (NTDLL.@)
3943 void WINAPI
_local_unwind( void *frame
, void *target_ip
)
3946 RtlUnwindEx( frame
, target_ip
, NULL
, NULL
, &context
, NULL
);
3949 /*******************************************************************
3950 * __C_specific_handler (NTDLL.@)
3952 EXCEPTION_DISPOSITION WINAPI
__C_specific_handler( EXCEPTION_RECORD
*rec
,
3955 struct _DISPATCHER_CONTEXT
*dispatch
)
3957 SCOPE_TABLE
*table
= dispatch
->HandlerData
;
3960 TRACE( "%p %lx %p %p\n", rec
, frame
, context
, dispatch
);
3961 if (TRACE_ON(seh
)) dump_scope_table( dispatch
->ImageBase
, table
);
3963 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
3965 for (i
= dispatch
->ScopeIndex
; i
< table
->Count
; i
++)
3967 if (dispatch
->ControlPc
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
3968 dispatch
->ControlPc
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
3970 TERMINATION_HANDLER handler
;
3972 if (table
->ScopeRecord
[i
].JumpTarget
) continue;
3974 if (rec
->ExceptionFlags
& EH_TARGET_UNWIND
&&
3975 dispatch
->TargetIp
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
3976 dispatch
->TargetIp
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
3981 handler
= (TERMINATION_HANDLER
)(dispatch
->ImageBase
+ table
->ScopeRecord
[i
].HandlerAddress
);
3982 dispatch
->ScopeIndex
= i
+1;
3984 TRACE( "calling __finally %p frame %lx\n", handler
, frame
);
3985 handler( 1, frame
);
3988 return ExceptionContinueSearch
;
3991 for (i
= dispatch
->ScopeIndex
; i
< table
->Count
; i
++)
3993 if (dispatch
->ControlPc
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
3994 dispatch
->ControlPc
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
3996 if (!table
->ScopeRecord
[i
].JumpTarget
) continue;
3997 if (table
->ScopeRecord
[i
].HandlerAddress
!= EXCEPTION_EXECUTE_HANDLER
)
3999 EXCEPTION_POINTERS ptrs
;
4000 PC_LANGUAGE_EXCEPTION_HANDLER filter
;
4002 filter
= (PC_LANGUAGE_EXCEPTION_HANDLER
)(dispatch
->ImageBase
+ table
->ScopeRecord
[i
].HandlerAddress
);
4003 ptrs
.ExceptionRecord
= rec
;
4004 ptrs
.ContextRecord
= context
;
4005 TRACE( "calling filter %p ptrs %p frame %lx\n", filter
, &ptrs
, frame
);
4006 switch (filter( &ptrs
, frame
))
4008 case EXCEPTION_EXECUTE_HANDLER
:
4010 case EXCEPTION_CONTINUE_SEARCH
:
4012 case EXCEPTION_CONTINUE_EXECUTION
:
4013 return ExceptionContinueExecution
;
4016 TRACE( "unwinding to target %lx\n", dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
);
4017 RtlUnwindEx( (void *)frame
, (char *)dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
,
4018 rec
, 0, dispatch
->ContextRecord
, dispatch
->HistoryTable
);
4021 return ExceptionContinueSearch
;
4025 /***********************************************************************
4026 * RtlRaiseException (NTDLL.@)
4028 __ASM_GLOBAL_FUNC( RtlRaiseException
,
4029 "movq %rcx,8(%rsp)\n\t"
4030 "sub $0x4f8,%rsp\n\t"
4031 __ASM_CFI(".cfi_adjust_cfa_offset 0x4f8\n\t")
4032 "leaq 0x20(%rsp),%rcx\n\t"
4033 "call " __ASM_NAME("RtlCaptureContext") "\n\t"
4034 "leaq 0x20(%rsp),%rdx\n\t" /* context pointer */
4035 "leaq 0x500(%rsp),%rax\n\t" /* orig stack pointer */
4036 "movq %rax,0x98(%rdx)\n\t" /* context->Rsp */
4037 "movq (%rax),%rcx\n\t" /* original first parameter */
4038 "movq %rcx,0x80(%rdx)\n\t" /* context->Rcx */
4039 "movq 0x4f8(%rsp),%rax\n\t" /* return address */
4040 "movq %rax,0xf8(%rdx)\n\t" /* context->Rip */
4041 "movq %rax,0x10(%rcx)\n\t" /* rec->ExceptionAddress */
4043 "call " __ASM_NAME("NtRaiseException") "\n\t"
4044 "movq %rax,%rcx\n\t"
4045 "call " __ASM_NAME("RtlRaiseStatus") /* does not return */ );
4048 /*************************************************************************
4049 * RtlCaptureStackBackTrace (NTDLL.@)
4051 USHORT WINAPI
RtlCaptureStackBackTrace( ULONG skip
, ULONG count
, PVOID
*buffer
, ULONG
*hash
)
4053 FIXME( "(%d, %d, %p, %p) stub!\n", skip
, count
, buffer
, hash
);
4058 /***********************************************************************
4061 static void WINAPI
call_thread_func( LPTHREAD_START_ROUTINE entry
, void *arg
)
4065 TRACE_(relay
)( "\1Starting thread proc %p (arg=%p)\n", entry
, arg
);
4066 RtlExitUserThread( entry( arg
));
4068 __EXCEPT(unhandled_exception_filter
)
4070 NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
4073 abort(); /* should not be reached */
4077 extern void DECLSPEC_NORETURN
start_thread( LPTHREAD_START_ROUTINE entry
, void *arg
, BOOL suspend
,
4079 __ASM_GLOBAL_FUNC( start_thread
,
4081 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
4082 "movq %rbp,48(%rsp)\n\t"
4083 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
4084 "movq %rbx,40(%rsp)\n\t"
4085 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
4086 "movq %r12,32(%rsp)\n\t"
4087 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
4088 "movq %r13,24(%rsp)\n\t"
4089 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
4090 "movq %r14,16(%rsp)\n\t"
4091 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
4092 "movq %r15,8(%rsp)\n\t"
4093 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
4094 /* store exit frame */
4095 "movq %gs:0x30,%rax\n\t"
4096 "movq %rsp,0x330(%rax)\n\t" /* amd64_thread_data()->exit_frame */
4097 /* switch to thread stack */
4098 "movq 8(%rax),%rax\n\t" /* NtCurrentTeb()->Tib.StackBase */
4099 "leaq -0x1000(%rax),%rsp\n\t"
4101 "call " __ASM_NAME("attach_thread") "\n\t"
4102 "movq %rax,%rsp\n\t"
4103 /* clear the stack */
4104 "andq $~0xfff,%rax\n\t" /* round down to page size */
4105 "movq %rax,%rdi\n\t"
4106 "call " __ASM_NAME("virtual_clear_thread_stack") "\n\t"
4107 /* switch to the initial context */
4108 "movq %rsp,%rdi\n\t"
4109 "call " __ASM_NAME("set_cpu_context") )
4111 extern void DECLSPEC_NORETURN
call_thread_exit_func( int status
, void (*func
)(int) );
4112 __ASM_GLOBAL_FUNC( call_thread_exit_func
,
4113 /* fetch exit frame */
4114 "movq %gs:0x30,%rax\n\t"
4115 "movq 0x330(%rax),%rdx\n\t" /* amd64_thread_data()->exit_frame */
4116 "testq %rdx,%rdx\n\t"
4119 /* switch to exit frame stack */
4120 "1:\tmovq $0,0x330(%rax)\n\t"
4121 "movq %rdx,%rsp\n\t"
4122 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
4123 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
4124 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
4125 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
4126 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
4127 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
4128 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
4132 /***********************************************************************
4133 * init_thread_context
4135 static void init_thread_context( CONTEXT
*context
, LPTHREAD_START_ROUTINE entry
, void *arg
, void *relay
)
4137 __asm__( "movw %%cs,%0" : "=m" (context
->SegCs
) );
4138 __asm__( "movw %%ss,%0" : "=m" (context
->SegSs
) );
4139 __asm__( "fxsave %0" : "=m" (context
->u
.FltSave
) );
4140 context
->Rcx
= (ULONG_PTR
)entry
;
4141 context
->Rdx
= (ULONG_PTR
)arg
;
4142 context
->Rsp
= (ULONG_PTR
)NtCurrentTeb()->Tib
.StackBase
- 0x28;
4143 context
->Rip
= (ULONG_PTR
)relay
;
4144 context
->EFlags
= 0x200;
4148 /***********************************************************************
4151 PCONTEXT DECLSPEC_HIDDEN
attach_thread( LPTHREAD_START_ROUTINE entry
, void *arg
,
4152 BOOL suspend
, void *relay
)
4158 CONTEXT context
= { 0 };
4160 context
.ContextFlags
= CONTEXT_ALL
;
4161 init_thread_context( &context
, entry
, arg
, relay
);
4162 wait_suspend( &context
);
4163 ctx
= (CONTEXT
*)((ULONG_PTR
)context
.Rsp
& ~15) - 1;
4168 ctx
= (CONTEXT
*)((char *)NtCurrentTeb()->Tib
.StackBase
- 0x30) - 1;
4169 init_thread_context( ctx
, entry
, arg
, relay
);
4171 ctx
->ContextFlags
= CONTEXT_FULL
;
4177 /***********************************************************************
4178 * signal_start_thread
4180 * Thread startup sequence:
4181 * signal_start_thread()
4183 * -> call_thread_func()
4185 void signal_start_thread( LPTHREAD_START_ROUTINE entry
, void *arg
, BOOL suspend
)
4187 start_thread( entry
, arg
, suspend
, call_thread_func
);
4191 /**********************************************************************
4192 * signal_start_process
4194 * Process startup sequence:
4195 * signal_start_process()
4197 * -> kernel32_start_process()
4199 void signal_start_process( LPTHREAD_START_ROUTINE entry
, BOOL suspend
)
4201 start_thread( entry
, NtCurrentTeb()->Peb
, suspend
, kernel32_start_process
);
4205 /***********************************************************************
4206 * signal_exit_thread
4208 void signal_exit_thread( int status
)
4210 call_thread_exit_func( status
, exit_thread
);
4213 /***********************************************************************
4214 * signal_exit_process
4216 void signal_exit_process( int status
)
4218 call_thread_exit_func( status
, exit
);
4221 /**********************************************************************
4222 * DbgBreakPoint (NTDLL.@)
4224 __ASM_STDCALL_FUNC( DbgBreakPoint
, 0, "int $3; ret")
4226 /**********************************************************************
4227 * DbgUserBreakPoint (NTDLL.@)
4229 __ASM_STDCALL_FUNC( DbgUserBreakPoint
, 0, "int $3; ret")
4231 #endif /* __x86_64__ */