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>
55 #define NONAMELESSUNION
56 #define NONAMELESSSTRUCT
58 #define WIN32_NO_STATUS
61 #include "wine/library.h"
62 #include "wine/exception.h"
63 #include "wine/list.h"
64 #include "ntdll_misc.h"
65 #include "wine/debug.h"
67 #ifdef HAVE_VALGRIND_MEMCHECK_H
68 #include <valgrind/memcheck.h>
71 WINE_DEFAULT_DEBUG_CHANNEL(seh
);
73 struct _DISPATCHER_CONTEXT
;
75 typedef LONG (WINAPI
*PC_LANGUAGE_EXCEPTION_HANDLER
)( EXCEPTION_POINTERS
*ptrs
, ULONG64 frame
);
76 typedef EXCEPTION_DISPOSITION (WINAPI
*PEXCEPTION_ROUTINE
)( EXCEPTION_RECORD
*rec
,
79 struct _DISPATCHER_CONTEXT
*dispatch
);
81 typedef struct _DISPATCHER_CONTEXT
85 PRUNTIME_FUNCTION FunctionEntry
;
86 ULONG64 EstablisherFrame
;
88 PCONTEXT ContextRecord
;
89 PEXCEPTION_ROUTINE LanguageHandler
;
91 PUNWIND_HISTORY_TABLE HistoryTable
;
93 } DISPATCHER_CONTEXT
, *PDISPATCHER_CONTEXT
;
95 typedef struct _SCOPE_TABLE
102 ULONG HandlerAddress
;
105 } SCOPE_TABLE
, *PSCOPE_TABLE
;
108 /* layering violation: the setjmp buffer is defined in msvcrt, but used by RtlUnwindEx */
109 struct MSVCRT_JUMP_BUFFER
135 /***********************************************************************
136 * signal context platform-specific definitions
140 #include <asm/prctl.h>
141 static inline int arch_prctl( int func
, void *ptr
) { return syscall( __NR_arch_prctl
, func
, ptr
); }
143 #define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
144 #define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
145 #define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
146 #define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
147 #define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
148 #define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
149 #define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
150 #define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
151 #define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
152 #define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
153 #define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
154 #define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
155 #define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
156 #define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
157 #define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
159 #define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
160 #define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
161 #define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
163 #define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
164 #define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
165 #define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
166 #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
167 #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
169 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
171 #elif defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
173 #define RAX_sig(context) ((context)->uc_mcontext.mc_rax)
174 #define RBX_sig(context) ((context)->uc_mcontext.mc_rbx)
175 #define RCX_sig(context) ((context)->uc_mcontext.mc_rcx)
176 #define RDX_sig(context) ((context)->uc_mcontext.mc_rdx)
177 #define RSI_sig(context) ((context)->uc_mcontext.mc_rsi)
178 #define RDI_sig(context) ((context)->uc_mcontext.mc_rdi)
179 #define RBP_sig(context) ((context)->uc_mcontext.mc_rbp)
180 #define R8_sig(context) ((context)->uc_mcontext.mc_r8)
181 #define R9_sig(context) ((context)->uc_mcontext.mc_r9)
182 #define R10_sig(context) ((context)->uc_mcontext.mc_r10)
183 #define R11_sig(context) ((context)->uc_mcontext.mc_r11)
184 #define R12_sig(context) ((context)->uc_mcontext.mc_r12)
185 #define R13_sig(context) ((context)->uc_mcontext.mc_r13)
186 #define R14_sig(context) ((context)->uc_mcontext.mc_r14)
187 #define R15_sig(context) ((context)->uc_mcontext.mc_r15)
189 #define CS_sig(context) ((context)->uc_mcontext.mc_cs)
190 #define DS_sig(context) ((context)->uc_mcontext.mc_ds)
191 #define ES_sig(context) ((context)->uc_mcontext.mc_es)
192 #define FS_sig(context) ((context)->uc_mcontext.mc_fs)
193 #define GS_sig(context) ((context)->uc_mcontext.mc_gs)
194 #define SS_sig(context) ((context)->uc_mcontext.mc_ss)
196 #define EFL_sig(context) ((context)->uc_mcontext.mc_rflags)
198 #define RIP_sig(context) ((context)->uc_mcontext.mc_rip)
199 #define RSP_sig(context) ((context)->uc_mcontext.mc_rsp)
200 #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
201 #define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
203 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.mc_fpstate))
205 #elif defined(__NetBSD__)
207 #define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
208 #define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
209 #define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
210 #define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
211 #define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
212 #define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
213 #define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
214 #define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
215 #define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
216 #define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
217 #define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
218 #define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
219 #define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
220 #define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
221 #define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
223 #define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
224 #define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
225 #define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
226 #define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
227 #define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
228 #define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
230 #define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
232 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
233 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
235 #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
236 #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
238 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
239 #elif defined (__APPLE__)
240 static pthread_key_t teb_key
;
242 #define RAX_sig(context) ((context)->uc_mcontext->__ss.__rax)
243 #define RBX_sig(context) ((context)->uc_mcontext->__ss.__rbx)
244 #define RCX_sig(context) ((context)->uc_mcontext->__ss.__rcx)
245 #define RDX_sig(context) ((context)->uc_mcontext->__ss.__rdx)
246 #define RSI_sig(context) ((context)->uc_mcontext->__ss.__rsi)
247 #define RDI_sig(context) ((context)->uc_mcontext->__ss.__rdi)
248 #define RBP_sig(context) ((context)->uc_mcontext->__ss.__rbp)
249 #define R8_sig(context) ((context)->uc_mcontext->__ss.__r8)
250 #define R9_sig(context) ((context)->uc_mcontext->__ss.__r9)
251 #define R10_sig(context) ((context)->uc_mcontext->__ss.__r10)
252 #define R11_sig(context) ((context)->uc_mcontext->__ss.__r11)
253 #define R12_sig(context) ((context)->uc_mcontext->__ss.__r12)
254 #define R13_sig(context) ((context)->uc_mcontext->__ss.__r13)
255 #define R14_sig(context) ((context)->uc_mcontext->__ss.__r14)
256 #define R15_sig(context) ((context)->uc_mcontext->__ss.__r15)
258 #define CS_sig(context) ((context)->uc_mcontext->__ss.__cs)
259 #define FS_sig(context) ((context)->uc_mcontext->__ss.__fs)
260 #define GS_sig(context) ((context)->uc_mcontext->__ss.__gs)
262 #define EFL_sig(context) ((context)->uc_mcontext->__ss.__rflags)
264 #define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rip))
265 #define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rsp))
267 #define TRAP_sig(context) ((context)->uc_mcontext->__es.__trapno)
268 #define ERROR_sig(context) ((context)->uc_mcontext->__es.__err)
270 #define FPU_sig(context) ((XMM_SAVE_AREA32 *)&(context)->uc_mcontext->__fs.__fpu_fcw)
273 #error You must define the signal context functions for your platform
278 TRAP_x86_UNKNOWN
= -1, /* Unknown fault (TRAP_sig not defined) */
279 TRAP_x86_DIVIDE
= 0, /* Division by zero exception */
280 TRAP_x86_TRCTRAP
= 1, /* Single-step exception */
281 TRAP_x86_NMI
= 2, /* NMI interrupt */
282 TRAP_x86_BPTFLT
= 3, /* Breakpoint exception */
283 TRAP_x86_OFLOW
= 4, /* Overflow exception */
284 TRAP_x86_BOUND
= 5, /* Bound range exception */
285 TRAP_x86_PRIVINFLT
= 6, /* Invalid opcode exception */
286 TRAP_x86_DNA
= 7, /* Device not available exception */
287 TRAP_x86_DOUBLEFLT
= 8, /* Double fault exception */
288 TRAP_x86_FPOPFLT
= 9, /* Coprocessor segment overrun */
289 TRAP_x86_TSSFLT
= 10, /* Invalid TSS exception */
290 TRAP_x86_SEGNPFLT
= 11, /* Segment not present exception */
291 TRAP_x86_STKFLT
= 12, /* Stack fault */
292 TRAP_x86_PROTFLT
= 13, /* General protection fault */
293 TRAP_x86_PAGEFLT
= 14, /* Page fault */
294 TRAP_x86_ARITHTRAP
= 16, /* Floating point exception */
295 TRAP_x86_ALIGNFLT
= 17, /* Alignment check exception */
296 TRAP_x86_MCHK
= 18, /* Machine check exception */
297 TRAP_x86_CACHEFLT
= 19 /* Cache flush exception */
300 static const size_t teb_size
= 0x2000; /* we reserve two pages for the TEB */
301 static size_t signal_stack_size
;
303 typedef void (*raise_func
)( EXCEPTION_RECORD
*rec
, CONTEXT
*context
);
304 typedef int (*wine_signal_handler
)(unsigned int sig
);
306 static wine_signal_handler handlers
[256];
308 /***********************************************************************
309 * Dynamic unwind table
312 struct dynamic_unwind_entry
316 /* memory region which matches this entry */
321 RUNTIME_FUNCTION
*table
;
324 /* user defined callback */
325 PGET_RUNTIME_FUNCTION_CALLBACK callback
;
329 static struct list dynamic_unwind_list
= LIST_INIT(dynamic_unwind_list
);
331 static RTL_CRITICAL_SECTION dynamic_unwind_section
;
332 static RTL_CRITICAL_SECTION_DEBUG dynamic_unwind_debug
=
334 0, 0, &dynamic_unwind_section
,
335 { &dynamic_unwind_debug
.ProcessLocksList
, &dynamic_unwind_debug
.ProcessLocksList
},
336 0, 0, { (DWORD_PTR
)(__FILE__
": dynamic_unwind_section") }
338 static RTL_CRITICAL_SECTION dynamic_unwind_section
= { &dynamic_unwind_debug
, -1, 0, 0, 0, 0 };
340 /***********************************************************************
341 * Definitions for Win32 unwind tables
346 RUNTIME_FUNCTION chain
;
364 BYTE frame_offset
: 4;
365 struct opcode opcodes
[1]; /* info->count entries */
366 /* followed by handler_data */
369 #define UWOP_PUSH_NONVOL 0
370 #define UWOP_ALLOC_LARGE 1
371 #define UWOP_ALLOC_SMALL 2
372 #define UWOP_SET_FPREG 3
373 #define UWOP_SAVE_NONVOL 4
374 #define UWOP_SAVE_NONVOL_FAR 5
375 #define UWOP_SAVE_XMM128 8
376 #define UWOP_SAVE_XMM128_FAR 9
377 #define UWOP_PUSH_MACHFRAME 10
379 static void dump_unwind_info( ULONG64 base
, RUNTIME_FUNCTION
*function
)
381 static const char * const reg_names
[16] =
382 { "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
383 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" };
385 union handler_data
*handler_data
;
386 struct UNWIND_INFO
*info
;
387 unsigned int i
, count
;
389 TRACE( "**** func %x-%x\n", function
->BeginAddress
, function
->EndAddress
);
392 if (function
->UnwindData
& 1)
394 RUNTIME_FUNCTION
*next
= (RUNTIME_FUNCTION
*)((char *)base
+ (function
->UnwindData
& ~1));
395 TRACE( "unwind info for function %p-%p chained to function %p-%p\n",
396 (char *)base
+ function
->BeginAddress
, (char *)base
+ function
->EndAddress
,
397 (char *)base
+ next
->BeginAddress
, (char *)base
+ next
->EndAddress
);
401 info
= (struct UNWIND_INFO
*)((char *)base
+ function
->UnwindData
);
403 TRACE( "unwind info at %p flags %x prolog 0x%x bytes function %p-%p\n",
404 info
, info
->flags
, info
->prolog
,
405 (char *)base
+ function
->BeginAddress
, (char *)base
+ function
->EndAddress
);
408 TRACE( " frame register %s offset 0x%x(%%rsp)\n",
409 reg_names
[info
->frame_reg
], info
->frame_offset
* 16 );
411 for (i
= 0; i
< info
->count
; i
++)
413 TRACE( " 0x%x: ", info
->opcodes
[i
].offset
);
414 switch (info
->opcodes
[i
].code
)
416 case UWOP_PUSH_NONVOL
:
417 TRACE( "pushq %%%s\n", reg_names
[info
->opcodes
[i
].info
] );
419 case UWOP_ALLOC_LARGE
:
420 if (info
->opcodes
[i
].info
)
422 count
= *(DWORD
*)&info
->opcodes
[i
+1];
427 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
430 TRACE( "subq $0x%x,%%rsp\n", count
);
432 case UWOP_ALLOC_SMALL
:
433 count
= (info
->opcodes
[i
].info
+ 1) * 8;
434 TRACE( "subq $0x%x,%%rsp\n", count
);
437 TRACE( "leaq 0x%x(%%rsp),%s\n",
438 info
->frame_offset
* 16, reg_names
[info
->frame_reg
] );
440 case UWOP_SAVE_NONVOL
:
441 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
442 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names
[info
->opcodes
[i
].info
], count
);
445 case UWOP_SAVE_NONVOL_FAR
:
446 count
= *(DWORD
*)&info
->opcodes
[i
+1];
447 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names
[info
->opcodes
[i
].info
], count
);
450 case UWOP_SAVE_XMM128
:
451 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 16;
452 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info
->opcodes
[i
].info
, count
);
455 case UWOP_SAVE_XMM128_FAR
:
456 count
= *(DWORD
*)&info
->opcodes
[i
+1];
457 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info
->opcodes
[i
].info
, count
);
460 case UWOP_PUSH_MACHFRAME
:
461 TRACE( "PUSH_MACHFRAME %u\n", info
->opcodes
[i
].info
);
464 FIXME( "unknown code %u\n", info
->opcodes
[i
].code
);
469 handler_data
= (union handler_data
*)&info
->opcodes
[(info
->count
+ 1) & ~1];
470 if (info
->flags
& UNW_FLAG_CHAININFO
)
472 TRACE( " chained to function %p-%p\n",
473 (char *)base
+ handler_data
->chain
.BeginAddress
,
474 (char *)base
+ handler_data
->chain
.EndAddress
);
475 function
= &handler_data
->chain
;
478 if (info
->flags
& (UNW_FLAG_EHANDLER
| UNW_FLAG_UHANDLER
))
479 TRACE( " handler %p data at %p\n",
480 (char *)base
+ handler_data
->handler
, &handler_data
->handler
+ 1 );
485 static void dump_scope_table( ULONG64 base
, const SCOPE_TABLE
*table
)
489 TRACE( "scope table at %p\n", table
);
490 for (i
= 0; i
< table
->Count
; i
++)
491 TRACE( " %u: %lx-%lx handler %lx target %lx\n", i
,
492 base
+ table
->ScopeRecord
[i
].BeginAddress
,
493 base
+ table
->ScopeRecord
[i
].EndAddress
,
494 base
+ table
->ScopeRecord
[i
].HandlerAddress
,
495 base
+ table
->ScopeRecord
[i
].JumpTarget
);
499 /***********************************************************************
500 * Definitions for Dwarf unwind tables
503 enum dwarf_call_frame_info
505 DW_CFA_advance_loc
= 0x40,
506 DW_CFA_offset
= 0x80,
507 DW_CFA_restore
= 0xc0,
509 DW_CFA_set_loc
= 0x01,
510 DW_CFA_advance_loc1
= 0x02,
511 DW_CFA_advance_loc2
= 0x03,
512 DW_CFA_advance_loc4
= 0x04,
513 DW_CFA_offset_extended
= 0x05,
514 DW_CFA_restore_extended
= 0x06,
515 DW_CFA_undefined
= 0x07,
516 DW_CFA_same_value
= 0x08,
517 DW_CFA_register
= 0x09,
518 DW_CFA_remember_state
= 0x0a,
519 DW_CFA_restore_state
= 0x0b,
520 DW_CFA_def_cfa
= 0x0c,
521 DW_CFA_def_cfa_register
= 0x0d,
522 DW_CFA_def_cfa_offset
= 0x0e,
523 DW_CFA_def_cfa_expression
= 0x0f,
524 DW_CFA_expression
= 0x10,
525 DW_CFA_offset_extended_sf
= 0x11,
526 DW_CFA_def_cfa_sf
= 0x12,
527 DW_CFA_def_cfa_offset_sf
= 0x13,
528 DW_CFA_val_offset
= 0x14,
529 DW_CFA_val_offset_sf
= 0x15,
530 DW_CFA_val_expression
= 0x16,
537 DW_OP_const1u
= 0x08,
538 DW_OP_const1s
= 0x09,
539 DW_OP_const2u
= 0x0a,
540 DW_OP_const2s
= 0x0b,
541 DW_OP_const4u
= 0x0c,
542 DW_OP_const4s
= 0x0d,
543 DW_OP_const8u
= 0x0e,
544 DW_OP_const8s
= 0x0f,
564 DW_OP_plus_uconst
= 0x23,
677 DW_OP_deref_size
= 0x94,
678 DW_OP_xderef_size
= 0x95,
680 DW_OP_push_object_address
= 0x97,
683 DW_OP_call_ref
= 0x9a,
684 DW_OP_form_tls_address
= 0x9b,
685 DW_OP_call_frame_cfa
= 0x9c,
686 DW_OP_bit_piece
= 0x9d,
687 DW_OP_lo_user
= 0xe0,
688 DW_OP_hi_user
= 0xff,
689 DW_OP_GNU_push_tls_address
= 0xe0,
690 DW_OP_GNU_uninit
= 0xf0,
691 DW_OP_GNU_encoded_addr
= 0xf1,
694 #define DW_EH_PE_native 0x00
695 #define DW_EH_PE_leb128 0x01
696 #define DW_EH_PE_data2 0x02
697 #define DW_EH_PE_data4 0x03
698 #define DW_EH_PE_data8 0x04
699 #define DW_EH_PE_signed 0x08
700 #define DW_EH_PE_abs 0x00
701 #define DW_EH_PE_pcrel 0x10
702 #define DW_EH_PE_textrel 0x20
703 #define DW_EH_PE_datarel 0x30
704 #define DW_EH_PE_funcrel 0x40
705 #define DW_EH_PE_aligned 0x50
706 #define DW_EH_PE_indirect 0x80
707 #define DW_EH_PE_omit 0xff
709 struct dwarf_eh_bases
720 unsigned char version
;
721 unsigned char augmentation
[1];
727 unsigned int cie_offset
;
730 extern const struct dwarf_fde
*_Unwind_Find_FDE (void *, struct dwarf_eh_bases
*);
732 static unsigned char dwarf_get_u1( const unsigned char **p
)
737 static unsigned short dwarf_get_u2( const unsigned char **p
)
739 unsigned int ret
= (*p
)[0] | ((*p
)[1] << 8);
744 static unsigned int dwarf_get_u4( const unsigned char **p
)
746 unsigned int ret
= (*p
)[0] | ((*p
)[1] << 8) | ((*p
)[2] << 16) | ((*p
)[3] << 24);
751 static ULONG64
dwarf_get_u8( const unsigned char **p
)
753 ULONG64 low
= dwarf_get_u4( p
);
754 ULONG64 high
= dwarf_get_u4( p
);
755 return low
| (high
<< 32);
758 static ULONG_PTR
dwarf_get_uleb128( const unsigned char **p
)
761 unsigned int shift
= 0;
767 ret
|= (ULONG_PTR
)(byte
& 0x7f) << shift
;
770 } while (byte
& 0x80);
774 static LONG_PTR
dwarf_get_sleb128( const unsigned char **p
)
777 unsigned int shift
= 0;
783 ret
|= (ULONG_PTR
)(byte
& 0x7f) << shift
;
786 } while (byte
& 0x80);
788 if ((shift
< 8 * sizeof(ret
)) && (byte
& 0x40)) ret
|= -((ULONG_PTR
)1 << shift
);
792 static ULONG_PTR
dwarf_get_ptr( const unsigned char **p
, unsigned char encoding
)
796 if (encoding
== DW_EH_PE_omit
) return 0;
798 switch (encoding
& 0xf0)
804 base
= (ULONG_PTR
)*p
;
807 FIXME( "unsupported encoding %02x\n", encoding
);
811 switch (encoding
& 0x0f)
813 case DW_EH_PE_native
:
814 return base
+ dwarf_get_u8( p
);
815 case DW_EH_PE_leb128
:
816 return base
+ dwarf_get_uleb128( p
);
818 return base
+ dwarf_get_u2( p
);
820 return base
+ dwarf_get_u4( p
);
822 return base
+ dwarf_get_u8( p
);
823 case DW_EH_PE_signed
|DW_EH_PE_leb128
:
824 return base
+ dwarf_get_sleb128( p
);
825 case DW_EH_PE_signed
|DW_EH_PE_data2
:
826 return base
+ (signed short)dwarf_get_u2( p
);
827 case DW_EH_PE_signed
|DW_EH_PE_data4
:
828 return base
+ (signed int)dwarf_get_u4( p
);
829 case DW_EH_PE_signed
|DW_EH_PE_data8
:
830 return base
+ (LONG64
)dwarf_get_u8( p
);
832 FIXME( "unsupported encoding %02x\n", encoding
);
839 RULE_UNSET
, /* not set at all */
840 RULE_UNDEFINED
, /* undefined value */
841 RULE_SAME
, /* same value as previous frame */
842 RULE_CFA_OFFSET
, /* stored at cfa offset */
843 RULE_OTHER_REG
, /* stored in other register */
844 RULE_EXPRESSION
, /* address specified by expression */
845 RULE_VAL_EXPRESSION
/* value specified by expression */
848 #define NB_FRAME_REGS 41
849 #define MAX_SAVED_STATES 16
853 ULONG_PTR cfa_offset
;
854 unsigned char cfa_reg
;
855 enum reg_rule cfa_rule
;
856 enum reg_rule rules
[NB_FRAME_REGS
];
857 ULONG64 regs
[NB_FRAME_REGS
];
863 ULONG_PTR code_align
;
865 unsigned char retaddr_reg
;
866 unsigned char fde_encoding
;
867 unsigned char signal_frame
;
868 unsigned char state_sp
;
869 struct frame_state state
;
870 struct frame_state
*state_stack
;
873 static const char *dwarf_reg_names
[NB_FRAME_REGS
] =
875 /* 0-7 */ "%rax", "%rdx", "%rcx", "%rbx", "%rsi", "%rdi", "%rbp", "%rsp",
876 /* 8-16 */ "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rip",
877 /* 17-24 */ "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",
878 /* 25-32 */ "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15",
879 /* 33-40 */ "%st0", "%st1", "%st2", "%st3", "%st4", "%st5", "%st6", "%st7"
882 static BOOL
valid_reg( ULONG_PTR reg
)
884 if (reg
>= NB_FRAME_REGS
) FIXME( "unsupported reg %lx\n", reg
);
885 return (reg
< NB_FRAME_REGS
);
888 static void execute_cfa_instructions( const unsigned char *ptr
, const unsigned char *end
,
889 ULONG_PTR last_ip
, struct frame_info
*info
)
891 while (ptr
< end
&& info
->ip
< last_ip
+ info
->signal_frame
)
893 enum dwarf_call_frame_info op
= *ptr
++;
899 case DW_CFA_advance_loc
:
901 ULONG_PTR offset
= (op
& 0x3f) * info
->code_align
;
902 TRACE( "%lx: DW_CFA_advance_loc %lu\n", info
->ip
, offset
);
908 ULONG_PTR reg
= op
& 0x3f;
909 LONG_PTR offset
= dwarf_get_uleb128( &ptr
) * info
->data_align
;
910 if (!valid_reg( reg
)) break;
911 TRACE( "%lx: DW_CFA_offset %s, %ld\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
912 info
->state
.regs
[reg
] = offset
;
913 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
918 ULONG_PTR reg
= op
& 0x3f;
919 if (!valid_reg( reg
)) break;
920 TRACE( "%lx: DW_CFA_restore %s\n", info
->ip
, dwarf_reg_names
[reg
] );
921 info
->state
.rules
[reg
] = RULE_UNSET
;
932 ULONG_PTR loc
= dwarf_get_ptr( &ptr
, info
->fde_encoding
);
933 TRACE( "%lx: DW_CFA_set_loc %lx\n", info
->ip
, loc
);
937 case DW_CFA_advance_loc1
:
939 ULONG_PTR offset
= *ptr
++ * info
->code_align
;
940 TRACE( "%lx: DW_CFA_advance_loc1 %lu\n", info
->ip
, offset
);
944 case DW_CFA_advance_loc2
:
946 ULONG_PTR offset
= dwarf_get_u2( &ptr
) * info
->code_align
;
947 TRACE( "%lx: DW_CFA_advance_loc2 %lu\n", info
->ip
, offset
);
951 case DW_CFA_advance_loc4
:
953 ULONG_PTR offset
= dwarf_get_u4( &ptr
) * info
->code_align
;
954 TRACE( "%lx: DW_CFA_advance_loc4 %lu\n", info
->ip
, offset
);
958 case DW_CFA_offset_extended
:
959 case DW_CFA_offset_extended_sf
:
961 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
962 LONG_PTR offset
= (op
== DW_CFA_offset_extended
) ? dwarf_get_uleb128( &ptr
) * info
->data_align
963 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
964 if (!valid_reg( reg
)) break;
965 TRACE( "%lx: DW_CFA_offset_extended %s, %ld\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
966 info
->state
.regs
[reg
] = offset
;
967 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
970 case DW_CFA_restore_extended
:
972 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
973 if (!valid_reg( reg
)) break;
974 TRACE( "%lx: DW_CFA_restore_extended %s\n", info
->ip
, dwarf_reg_names
[reg
] );
975 info
->state
.rules
[reg
] = RULE_UNSET
;
978 case DW_CFA_undefined
:
980 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
981 if (!valid_reg( reg
)) break;
982 TRACE( "%lx: DW_CFA_undefined %s\n", info
->ip
, dwarf_reg_names
[reg
] );
983 info
->state
.rules
[reg
] = RULE_UNDEFINED
;
986 case DW_CFA_same_value
:
988 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
989 if (!valid_reg( reg
)) break;
990 TRACE( "%lx: DW_CFA_same_value %s\n", info
->ip
, dwarf_reg_names
[reg
] );
991 info
->state
.regs
[reg
] = reg
;
992 info
->state
.rules
[reg
] = RULE_SAME
;
995 case DW_CFA_register
:
997 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
998 ULONG_PTR reg2
= dwarf_get_uleb128( &ptr
);
999 if (!valid_reg( reg
) || !valid_reg( reg2
)) break;
1000 TRACE( "%lx: DW_CFA_register %s == %s\n", info
->ip
, dwarf_reg_names
[reg
], dwarf_reg_names
[reg2
] );
1001 info
->state
.regs
[reg
] = reg2
;
1002 info
->state
.rules
[reg
] = RULE_OTHER_REG
;
1005 case DW_CFA_remember_state
:
1006 TRACE( "%lx: DW_CFA_remember_state\n", info
->ip
);
1007 if (info
->state_sp
>= MAX_SAVED_STATES
)
1008 FIXME( "%lx: DW_CFA_remember_state too many nested saves\n", info
->ip
);
1010 info
->state_stack
[info
->state_sp
++] = info
->state
;
1012 case DW_CFA_restore_state
:
1013 TRACE( "%lx: DW_CFA_restore_state\n", info
->ip
);
1014 if (!info
->state_sp
)
1015 FIXME( "%lx: DW_CFA_restore_state without corresponding save\n", info
->ip
);
1017 info
->state
= info
->state_stack
[--info
->state_sp
];
1019 case DW_CFA_def_cfa
:
1020 case DW_CFA_def_cfa_sf
:
1022 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1023 ULONG_PTR offset
= (op
== DW_CFA_def_cfa
) ? dwarf_get_uleb128( &ptr
)
1024 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
1025 if (!valid_reg( reg
)) break;
1026 TRACE( "%lx: DW_CFA_def_cfa %s, %lu\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
1027 info
->state
.cfa_reg
= reg
;
1028 info
->state
.cfa_offset
= offset
;
1029 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1032 case DW_CFA_def_cfa_register
:
1034 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1035 if (!valid_reg( reg
)) break;
1036 TRACE( "%lx: DW_CFA_def_cfa_register %s\n", info
->ip
, dwarf_reg_names
[reg
] );
1037 info
->state
.cfa_reg
= reg
;
1038 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1041 case DW_CFA_def_cfa_offset
:
1042 case DW_CFA_def_cfa_offset_sf
:
1044 ULONG_PTR offset
= (op
== DW_CFA_def_cfa_offset
) ? dwarf_get_uleb128( &ptr
)
1045 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
1046 TRACE( "%lx: DW_CFA_def_cfa_offset %lu\n", info
->ip
, offset
);
1047 info
->state
.cfa_offset
= offset
;
1048 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1051 case DW_CFA_def_cfa_expression
:
1053 ULONG_PTR expr
= (ULONG_PTR
)ptr
;
1054 ULONG_PTR len
= dwarf_get_uleb128( &ptr
);
1055 TRACE( "%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info
->ip
, expr
, expr
+len
);
1056 info
->state
.cfa_offset
= expr
;
1057 info
->state
.cfa_rule
= RULE_VAL_EXPRESSION
;
1061 case DW_CFA_expression
:
1062 case DW_CFA_val_expression
:
1064 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1065 ULONG_PTR expr
= (ULONG_PTR
)ptr
;
1066 ULONG_PTR len
= dwarf_get_uleb128( &ptr
);
1067 if (!valid_reg( reg
)) break;
1068 TRACE( "%lx: DW_CFA_%sexpression %s %lx-%lx\n",
1069 info
->ip
, (op
== DW_CFA_expression
) ? "" : "val_", dwarf_reg_names
[reg
], expr
, expr
+len
);
1070 info
->state
.regs
[reg
] = expr
;
1071 info
->state
.rules
[reg
] = (op
== DW_CFA_expression
) ? RULE_EXPRESSION
: RULE_VAL_EXPRESSION
;
1076 FIXME( "%lx: unknown CFA opcode %02x\n", info
->ip
, op
);
1082 /* retrieve a context register from its dwarf number */
1083 static void *get_context_reg( CONTEXT
*context
, ULONG_PTR dw_reg
)
1087 case 0: return &context
->Rax
;
1088 case 1: return &context
->Rdx
;
1089 case 2: return &context
->Rcx
;
1090 case 3: return &context
->Rbx
;
1091 case 4: return &context
->Rsi
;
1092 case 5: return &context
->Rdi
;
1093 case 6: return &context
->Rbp
;
1094 case 7: return &context
->Rsp
;
1095 case 8: return &context
->R8
;
1096 case 9: return &context
->R9
;
1097 case 10: return &context
->R10
;
1098 case 11: return &context
->R11
;
1099 case 12: return &context
->R12
;
1100 case 13: return &context
->R13
;
1101 case 14: return &context
->R14
;
1102 case 15: return &context
->R15
;
1103 case 16: return &context
->Rip
;
1104 case 17: return &context
->u
.s
.Xmm0
;
1105 case 18: return &context
->u
.s
.Xmm1
;
1106 case 19: return &context
->u
.s
.Xmm2
;
1107 case 20: return &context
->u
.s
.Xmm3
;
1108 case 21: return &context
->u
.s
.Xmm4
;
1109 case 22: return &context
->u
.s
.Xmm5
;
1110 case 23: return &context
->u
.s
.Xmm6
;
1111 case 24: return &context
->u
.s
.Xmm7
;
1112 case 25: return &context
->u
.s
.Xmm8
;
1113 case 26: return &context
->u
.s
.Xmm9
;
1114 case 27: return &context
->u
.s
.Xmm10
;
1115 case 28: return &context
->u
.s
.Xmm11
;
1116 case 29: return &context
->u
.s
.Xmm12
;
1117 case 30: return &context
->u
.s
.Xmm13
;
1118 case 31: return &context
->u
.s
.Xmm14
;
1119 case 32: return &context
->u
.s
.Xmm15
;
1120 case 33: return &context
->u
.s
.Legacy
[0];
1121 case 34: return &context
->u
.s
.Legacy
[1];
1122 case 35: return &context
->u
.s
.Legacy
[2];
1123 case 36: return &context
->u
.s
.Legacy
[3];
1124 case 37: return &context
->u
.s
.Legacy
[4];
1125 case 38: return &context
->u
.s
.Legacy
[5];
1126 case 39: return &context
->u
.s
.Legacy
[6];
1127 case 40: return &context
->u
.s
.Legacy
[7];
1128 default: return NULL
;
1132 /* set a context register from its dwarf number */
1133 static void set_context_reg( CONTEXT
*context
, ULONG_PTR dw_reg
, void *val
)
1137 case 0: context
->Rax
= *(ULONG64
*)val
; break;
1138 case 1: context
->Rdx
= *(ULONG64
*)val
; break;
1139 case 2: context
->Rcx
= *(ULONG64
*)val
; break;
1140 case 3: context
->Rbx
= *(ULONG64
*)val
; break;
1141 case 4: context
->Rsi
= *(ULONG64
*)val
; break;
1142 case 5: context
->Rdi
= *(ULONG64
*)val
; break;
1143 case 6: context
->Rbp
= *(ULONG64
*)val
; break;
1144 case 7: context
->Rsp
= *(ULONG64
*)val
; break;
1145 case 8: context
->R8
= *(ULONG64
*)val
; break;
1146 case 9: context
->R9
= *(ULONG64
*)val
; break;
1147 case 10: context
->R10
= *(ULONG64
*)val
; break;
1148 case 11: context
->R11
= *(ULONG64
*)val
; break;
1149 case 12: context
->R12
= *(ULONG64
*)val
; break;
1150 case 13: context
->R13
= *(ULONG64
*)val
; break;
1151 case 14: context
->R14
= *(ULONG64
*)val
; break;
1152 case 15: context
->R15
= *(ULONG64
*)val
; break;
1153 case 16: context
->Rip
= *(ULONG64
*)val
; break;
1154 case 17: context
->u
.s
.Xmm0
= *(M128A
*)val
; break;
1155 case 18: context
->u
.s
.Xmm1
= *(M128A
*)val
; break;
1156 case 19: context
->u
.s
.Xmm2
= *(M128A
*)val
; break;
1157 case 20: context
->u
.s
.Xmm3
= *(M128A
*)val
; break;
1158 case 21: context
->u
.s
.Xmm4
= *(M128A
*)val
; break;
1159 case 22: context
->u
.s
.Xmm5
= *(M128A
*)val
; break;
1160 case 23: context
->u
.s
.Xmm6
= *(M128A
*)val
; break;
1161 case 24: context
->u
.s
.Xmm7
= *(M128A
*)val
; break;
1162 case 25: context
->u
.s
.Xmm8
= *(M128A
*)val
; break;
1163 case 26: context
->u
.s
.Xmm9
= *(M128A
*)val
; break;
1164 case 27: context
->u
.s
.Xmm10
= *(M128A
*)val
; break;
1165 case 28: context
->u
.s
.Xmm11
= *(M128A
*)val
; break;
1166 case 29: context
->u
.s
.Xmm12
= *(M128A
*)val
; break;
1167 case 30: context
->u
.s
.Xmm13
= *(M128A
*)val
; break;
1168 case 31: context
->u
.s
.Xmm14
= *(M128A
*)val
; break;
1169 case 32: context
->u
.s
.Xmm15
= *(M128A
*)val
; break;
1170 case 33: context
->u
.s
.Legacy
[0] = *(M128A
*)val
; break;
1171 case 34: context
->u
.s
.Legacy
[1] = *(M128A
*)val
; break;
1172 case 35: context
->u
.s
.Legacy
[2] = *(M128A
*)val
; break;
1173 case 36: context
->u
.s
.Legacy
[3] = *(M128A
*)val
; break;
1174 case 37: context
->u
.s
.Legacy
[4] = *(M128A
*)val
; break;
1175 case 38: context
->u
.s
.Legacy
[5] = *(M128A
*)val
; break;
1176 case 39: context
->u
.s
.Legacy
[6] = *(M128A
*)val
; break;
1177 case 40: context
->u
.s
.Legacy
[7] = *(M128A
*)val
; break;
1181 static ULONG_PTR
eval_expression( const unsigned char *p
, CONTEXT
*context
)
1183 ULONG_PTR reg
, tmp
, stack
[64];
1185 ULONG_PTR len
= dwarf_get_uleb128(&p
);
1186 const unsigned char *end
= p
+ len
;
1190 unsigned char opcode
= dwarf_get_u1(&p
);
1192 if (opcode
>= DW_OP_lit0
&& opcode
<= DW_OP_lit31
)
1193 stack
[++sp
] = opcode
- DW_OP_lit0
;
1194 else if (opcode
>= DW_OP_reg0
&& opcode
<= DW_OP_reg31
)
1195 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, opcode
- DW_OP_reg0
);
1196 else if (opcode
>= DW_OP_breg0
&& opcode
<= DW_OP_breg31
)
1197 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, opcode
- DW_OP_breg0
) + dwarf_get_sleb128(&p
);
1198 else switch (opcode
)
1200 case DW_OP_nop
: break;
1201 case DW_OP_addr
: stack
[++sp
] = dwarf_get_u8(&p
); break;
1202 case DW_OP_const1u
: stack
[++sp
] = dwarf_get_u1(&p
); break;
1203 case DW_OP_const1s
: stack
[++sp
] = (signed char)dwarf_get_u1(&p
); break;
1204 case DW_OP_const2u
: stack
[++sp
] = dwarf_get_u2(&p
); break;
1205 case DW_OP_const2s
: stack
[++sp
] = (short)dwarf_get_u2(&p
); break;
1206 case DW_OP_const4u
: stack
[++sp
] = dwarf_get_u4(&p
); break;
1207 case DW_OP_const4s
: stack
[++sp
] = (signed int)dwarf_get_u4(&p
); break;
1208 case DW_OP_const8u
: stack
[++sp
] = dwarf_get_u8(&p
); break;
1209 case DW_OP_const8s
: stack
[++sp
] = (LONG_PTR
)dwarf_get_u8(&p
); break;
1210 case DW_OP_constu
: stack
[++sp
] = dwarf_get_uleb128(&p
); break;
1211 case DW_OP_consts
: stack
[++sp
] = dwarf_get_sleb128(&p
); break;
1212 case DW_OP_deref
: stack
[sp
] = *(ULONG_PTR
*)stack
[sp
]; break;
1213 case DW_OP_dup
: stack
[sp
+ 1] = stack
[sp
]; sp
++; break;
1214 case DW_OP_drop
: sp
--; break;
1215 case DW_OP_over
: stack
[sp
+ 1] = stack
[sp
- 1]; sp
++; break;
1216 case DW_OP_pick
: stack
[sp
+ 1] = stack
[sp
- dwarf_get_u1(&p
)]; sp
++; break;
1217 case DW_OP_swap
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = tmp
; break;
1218 case DW_OP_rot
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = stack
[sp
-2]; stack
[sp
-2] = tmp
; break;
1219 case DW_OP_abs
: stack
[sp
] = labs(stack
[sp
]); break;
1220 case DW_OP_neg
: stack
[sp
] = -stack
[sp
]; break;
1221 case DW_OP_not
: stack
[sp
] = ~stack
[sp
]; break;
1222 case DW_OP_and
: stack
[sp
-1] &= stack
[sp
]; sp
--; break;
1223 case DW_OP_or
: stack
[sp
-1] |= stack
[sp
]; sp
--; break;
1224 case DW_OP_minus
: stack
[sp
-1] -= stack
[sp
]; sp
--; break;
1225 case DW_OP_mul
: stack
[sp
-1] *= stack
[sp
]; sp
--; break;
1226 case DW_OP_plus
: stack
[sp
-1] += stack
[sp
]; sp
--; break;
1227 case DW_OP_xor
: stack
[sp
-1] ^= stack
[sp
]; sp
--; break;
1228 case DW_OP_shl
: stack
[sp
-1] <<= stack
[sp
]; sp
--; break;
1229 case DW_OP_shr
: stack
[sp
-1] >>= stack
[sp
]; sp
--; break;
1230 case DW_OP_plus_uconst
: stack
[sp
] += dwarf_get_uleb128(&p
); break;
1231 case DW_OP_shra
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (1 << stack
[sp
]); sp
--; break;
1232 case DW_OP_div
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (LONG_PTR
)stack
[sp
]; sp
--; break;
1233 case DW_OP_mod
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] % (LONG_PTR
)stack
[sp
]; sp
--; break;
1234 case DW_OP_ge
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] >= (LONG_PTR
)stack
[sp
]); sp
--; break;
1235 case DW_OP_gt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] > (LONG_PTR
)stack
[sp
]); sp
--; break;
1236 case DW_OP_le
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] <= (LONG_PTR
)stack
[sp
]); sp
--; break;
1237 case DW_OP_lt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] < (LONG_PTR
)stack
[sp
]); sp
--; break;
1238 case DW_OP_eq
: stack
[sp
-1] = (stack
[sp
-1] == stack
[sp
]); sp
--; break;
1239 case DW_OP_ne
: stack
[sp
-1] = (stack
[sp
-1] != stack
[sp
]); sp
--; break;
1240 case DW_OP_skip
: tmp
= (short)dwarf_get_u2(&p
); p
+= tmp
; break;
1241 case DW_OP_bra
: tmp
= (short)dwarf_get_u2(&p
); if (!stack
[sp
--]) p
+= tmp
; break;
1242 case DW_OP_GNU_encoded_addr
: tmp
= *p
++; stack
[++sp
] = dwarf_get_ptr( &p
, tmp
); break;
1243 case DW_OP_regx
: stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, dwarf_get_uleb128(&p
) ); break;
1245 reg
= dwarf_get_uleb128(&p
);
1246 tmp
= dwarf_get_sleb128(&p
);
1247 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, reg
) + tmp
;
1249 case DW_OP_deref_size
:
1252 case 1: stack
[sp
] = *(unsigned char *)stack
[sp
]; break;
1253 case 2: stack
[sp
] = *(unsigned short *)stack
[sp
]; break;
1254 case 4: stack
[sp
] = *(unsigned int *)stack
[sp
]; break;
1255 case 8: stack
[sp
] = *(ULONG_PTR
*)stack
[sp
]; break;
1259 FIXME( "unhandled opcode %02x\n", opcode
);
1265 /* apply the computed frame info to the actual context */
1266 static void apply_frame_state( CONTEXT
*context
, struct frame_state
*state
)
1269 ULONG_PTR cfa
, value
;
1270 CONTEXT new_context
= *context
;
1272 switch (state
->cfa_rule
)
1274 case RULE_EXPRESSION
:
1275 cfa
= *(ULONG_PTR
*)eval_expression( (const unsigned char *)state
->cfa_offset
, context
);
1277 case RULE_VAL_EXPRESSION
:
1278 cfa
= eval_expression( (const unsigned char *)state
->cfa_offset
, context
);
1281 cfa
= *(ULONG_PTR
*)get_context_reg( context
, state
->cfa_reg
) + state
->cfa_offset
;
1286 for (i
= 0; i
< NB_FRAME_REGS
; i
++)
1288 switch (state
->rules
[i
])
1291 case RULE_UNDEFINED
:
1294 case RULE_CFA_OFFSET
:
1295 set_context_reg( &new_context
, i
, (char *)cfa
+ state
->regs
[i
] );
1297 case RULE_OTHER_REG
:
1298 set_context_reg( &new_context
, i
, get_context_reg( context
, state
->regs
[i
] ));
1300 case RULE_EXPRESSION
:
1301 value
= eval_expression( (const unsigned char *)state
->regs
[i
], context
);
1302 set_context_reg( &new_context
, i
, (void *)value
);
1304 case RULE_VAL_EXPRESSION
:
1305 value
= eval_expression( (const unsigned char *)state
->regs
[i
], context
);
1306 set_context_reg( &new_context
, i
, &value
);
1310 new_context
.Rsp
= cfa
;
1311 *context
= new_context
;
1315 /***********************************************************************
1316 * dwarf_virtual_unwind
1318 * Equivalent of RtlVirtualUnwind for builtin modules.
1320 static NTSTATUS
dwarf_virtual_unwind( ULONG64 ip
, ULONG64
*frame
,CONTEXT
*context
,
1321 const struct dwarf_fde
*fde
, const struct dwarf_eh_bases
*bases
,
1322 PEXCEPTION_ROUTINE
*handler
, void **handler_data
)
1324 const struct dwarf_cie
*cie
;
1325 const unsigned char *ptr
, *augmentation
, *end
;
1326 ULONG_PTR len
, code_end
;
1327 struct frame_info info
;
1328 struct frame_state state_stack
[MAX_SAVED_STATES
];
1329 int aug_z_format
= 0;
1330 unsigned char lsda_encoding
= DW_EH_PE_omit
;
1332 memset( &info
, 0, sizeof(info
) );
1333 info
.state_stack
= state_stack
;
1334 info
.ip
= (ULONG_PTR
)bases
->func
;
1337 cie
= (const struct dwarf_cie
*)((const char *)&fde
->cie_offset
- fde
->cie_offset
);
1339 /* parse the CIE first */
1341 if (cie
->version
!= 1)
1343 FIXME( "unknown CIE version %u at %p\n", cie
->version
, cie
);
1344 return STATUS_INVALID_DISPOSITION
;
1346 ptr
= cie
->augmentation
+ strlen((const char *)cie
->augmentation
) + 1;
1348 info
.code_align
= dwarf_get_uleb128( &ptr
);
1349 info
.data_align
= dwarf_get_sleb128( &ptr
);
1350 info
.retaddr_reg
= *ptr
++;
1351 info
.state
.cfa_rule
= RULE_CFA_OFFSET
;
1353 TRACE( "function %lx base %p cie %p len %x id %x version %x aug '%s' code_align %lu data_align %ld retaddr %s\n",
1354 ip
, bases
->func
, cie
, cie
->length
, cie
->id
, cie
->version
, cie
->augmentation
,
1355 info
.code_align
, info
.data_align
, dwarf_reg_names
[info
.retaddr_reg
] );
1358 for (augmentation
= cie
->augmentation
; *augmentation
; augmentation
++)
1360 switch (*augmentation
)
1363 len
= dwarf_get_uleb128( &ptr
);
1368 lsda_encoding
= *ptr
++;
1372 unsigned char encoding
= *ptr
++;
1373 *handler
= (void *)dwarf_get_ptr( &ptr
, encoding
);
1377 info
.fde_encoding
= *ptr
++;
1380 info
.signal_frame
= 1;
1383 FIXME( "unknown augmentation '%c'\n", *augmentation
);
1384 if (!end
) return STATUS_INVALID_DISPOSITION
; /* cannot continue */
1389 end
= (const unsigned char *)(&cie
->length
+ 1) + cie
->length
;
1390 execute_cfa_instructions( ptr
, end
, ip
, &info
);
1392 ptr
= (const unsigned char *)(fde
+ 1);
1393 info
.ip
= dwarf_get_ptr( &ptr
, info
.fde_encoding
); /* fde code start */
1394 code_end
= info
.ip
+ dwarf_get_ptr( &ptr
, info
.fde_encoding
& 0x0f ); /* fde code length */
1396 if (aug_z_format
) /* get length of augmentation data */
1398 len
= dwarf_get_uleb128( &ptr
);
1403 *handler_data
= (void *)dwarf_get_ptr( &ptr
, lsda_encoding
);
1406 end
= (const unsigned char *)(&fde
->length
+ 1) + fde
->length
;
1407 TRACE( "fde %p len %x personality %p lsda %p code %lx-%lx\n",
1408 fde
, fde
->length
, *handler
, *handler_data
, info
.ip
, code_end
);
1409 execute_cfa_instructions( ptr
, end
, ip
, &info
);
1410 *frame
= context
->Rsp
;
1411 apply_frame_state( context
, &info
.state
);
1413 TRACE( "next function rip=%016lx\n", context
->Rip
);
1414 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1415 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
1416 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1417 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
1418 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1419 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
1420 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1421 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
1423 return STATUS_SUCCESS
;
1427 /***********************************************************************
1430 static inline int dispatch_signal(unsigned int sig
)
1432 if (handlers
[sig
] == NULL
) return 0;
1433 return handlers
[sig
](sig
);
1436 /***********************************************************************
1439 * Get the base of the signal stack for the current thread.
1441 static inline void *get_signal_stack(void)
1443 return (char *)NtCurrentTeb() + teb_size
;
1446 /***********************************************************************
1447 * is_inside_signal_stack
1449 * Check if pointer is inside the signal stack.
1451 static inline BOOL
is_inside_signal_stack( void *ptr
)
1453 return ((char *)ptr
>= (char *)get_signal_stack() &&
1454 (char *)ptr
< (char *)get_signal_stack() + signal_stack_size
);
1457 /***********************************************************************
1460 * Set the register values from a sigcontext.
1462 static void save_context( CONTEXT
*context
, const ucontext_t
*sigcontext
)
1464 context
->ContextFlags
= CONTEXT_CONTROL
| CONTEXT_INTEGER
| CONTEXT_SEGMENTS
;
1465 context
->Rax
= RAX_sig(sigcontext
);
1466 context
->Rcx
= RCX_sig(sigcontext
);
1467 context
->Rdx
= RDX_sig(sigcontext
);
1468 context
->Rbx
= RBX_sig(sigcontext
);
1469 context
->Rsp
= RSP_sig(sigcontext
);
1470 context
->Rbp
= RBP_sig(sigcontext
);
1471 context
->Rsi
= RSI_sig(sigcontext
);
1472 context
->Rdi
= RDI_sig(sigcontext
);
1473 context
->R8
= R8_sig(sigcontext
);
1474 context
->R9
= R9_sig(sigcontext
);
1475 context
->R10
= R10_sig(sigcontext
);
1476 context
->R11
= R11_sig(sigcontext
);
1477 context
->R12
= R12_sig(sigcontext
);
1478 context
->R13
= R13_sig(sigcontext
);
1479 context
->R14
= R14_sig(sigcontext
);
1480 context
->R15
= R15_sig(sigcontext
);
1481 context
->Rip
= RIP_sig(sigcontext
);
1482 context
->SegCs
= CS_sig(sigcontext
);
1483 context
->SegFs
= FS_sig(sigcontext
);
1484 context
->SegGs
= GS_sig(sigcontext
);
1485 context
->EFlags
= EFL_sig(sigcontext
);
1487 context
->SegDs
= DS_sig(sigcontext
);
1489 __asm__("movw %%ds,%0" : "=m" (context
->SegDs
));
1492 context
->SegEs
= ES_sig(sigcontext
);
1494 __asm__("movw %%es,%0" : "=m" (context
->SegEs
));
1497 context
->SegSs
= SS_sig(sigcontext
);
1499 __asm__("movw %%ss,%0" : "=m" (context
->SegSs
));
1501 if (FPU_sig(sigcontext
))
1503 context
->ContextFlags
|= CONTEXT_FLOATING_POINT
;
1504 context
->u
.FltSave
= *FPU_sig(sigcontext
);
1505 context
->MxCsr
= context
->u
.FltSave
.MxCsr
;
1510 /***********************************************************************
1513 * Build a sigcontext from the register values.
1515 static void restore_context( const CONTEXT
*context
, ucontext_t
*sigcontext
)
1517 RAX_sig(sigcontext
) = context
->Rax
;
1518 RCX_sig(sigcontext
) = context
->Rcx
;
1519 RDX_sig(sigcontext
) = context
->Rdx
;
1520 RBX_sig(sigcontext
) = context
->Rbx
;
1521 RSP_sig(sigcontext
) = context
->Rsp
;
1522 RBP_sig(sigcontext
) = context
->Rbp
;
1523 RSI_sig(sigcontext
) = context
->Rsi
;
1524 RDI_sig(sigcontext
) = context
->Rdi
;
1525 R8_sig(sigcontext
) = context
->R8
;
1526 R9_sig(sigcontext
) = context
->R9
;
1527 R10_sig(sigcontext
) = context
->R10
;
1528 R11_sig(sigcontext
) = context
->R11
;
1529 R12_sig(sigcontext
) = context
->R12
;
1530 R13_sig(sigcontext
) = context
->R13
;
1531 R14_sig(sigcontext
) = context
->R14
;
1532 R15_sig(sigcontext
) = context
->R15
;
1533 RIP_sig(sigcontext
) = context
->Rip
;
1534 CS_sig(sigcontext
) = context
->SegCs
;
1535 FS_sig(sigcontext
) = context
->SegFs
;
1536 GS_sig(sigcontext
) = context
->SegGs
;
1537 EFL_sig(sigcontext
) = context
->EFlags
;
1539 DS_sig(sigcontext
) = context
->SegDs
;
1542 ES_sig(sigcontext
) = context
->SegEs
;
1545 SS_sig(sigcontext
) = context
->SegSs
;
1547 if (FPU_sig(sigcontext
)) *FPU_sig(sigcontext
) = context
->u
.FltSave
;
1551 /**************************************************************************
1552 * __chkstk (NTDLL.@)
1554 * Supposed to touch all the stack pages, but we shouldn't need that.
1556 __ASM_GLOBAL_FUNC( __chkstk
, "ret" );
1559 /***********************************************************************
1560 * RtlCaptureContext (NTDLL.@)
1562 __ASM_GLOBAL_FUNC( RtlCaptureContext
,
1564 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
1565 "movl $0x001000f,0x30(%rcx)\n\t" /* context->ContextFlags */
1566 "stmxcsr 0x34(%rcx)\n\t" /* context->MxCsr */
1567 "movw %cs,0x38(%rcx)\n\t" /* context->SegCs */
1568 "movw %ds,0x3a(%rcx)\n\t" /* context->SegDs */
1569 "movw %es,0x3c(%rcx)\n\t" /* context->SegEs */
1570 "movw %fs,0x3e(%rcx)\n\t" /* context->SegFs */
1571 "movw %gs,0x40(%rcx)\n\t" /* context->SegGs */
1572 "movw %ss,0x42(%rcx)\n\t" /* context->SegSs */
1573 "popq 0x44(%rcx)\n\t" /* context->Eflags */
1574 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
1575 "movq %rax,0x78(%rcx)\n\t" /* context->Rax */
1576 "movq %rcx,0x80(%rcx)\n\t" /* context->Rcx */
1577 "movq %rdx,0x88(%rcx)\n\t" /* context->Rdx */
1578 "movq %rbx,0x90(%rcx)\n\t" /* context->Rbx */
1579 "leaq 8(%rsp),%rax\n\t"
1580 "movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
1581 "movq %rbp,0xa0(%rcx)\n\t" /* context->Rbp */
1582 "movq %rsi,0xa8(%rcx)\n\t" /* context->Rsi */
1583 "movq %rdi,0xb0(%rcx)\n\t" /* context->Rdi */
1584 "movq %r8,0xb8(%rcx)\n\t" /* context->R8 */
1585 "movq %r9,0xc0(%rcx)\n\t" /* context->R9 */
1586 "movq %r10,0xc8(%rcx)\n\t" /* context->R10 */
1587 "movq %r11,0xd0(%rcx)\n\t" /* context->R11 */
1588 "movq %r12,0xd8(%rcx)\n\t" /* context->R12 */
1589 "movq %r13,0xe0(%rcx)\n\t" /* context->R13 */
1590 "movq %r14,0xe8(%rcx)\n\t" /* context->R14 */
1591 "movq %r15,0xf0(%rcx)\n\t" /* context->R15 */
1592 "movq (%rsp),%rax\n\t"
1593 "movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
1594 "fxsave 0x100(%rcx)\n\t" /* context->FtlSave */
1595 "movdqa %xmm0,0x1a0(%rcx)\n\t" /* context->Xmm0 */
1596 "movdqa %xmm1,0x1b0(%rcx)\n\t" /* context->Xmm1 */
1597 "movdqa %xmm2,0x1c0(%rcx)\n\t" /* context->Xmm2 */
1598 "movdqa %xmm3,0x1d0(%rcx)\n\t" /* context->Xmm3 */
1599 "movdqa %xmm4,0x1e0(%rcx)\n\t" /* context->Xmm4 */
1600 "movdqa %xmm5,0x1f0(%rcx)\n\t" /* context->Xmm5 */
1601 "movdqa %xmm6,0x200(%rcx)\n\t" /* context->Xmm6 */
1602 "movdqa %xmm7,0x210(%rcx)\n\t" /* context->Xmm7 */
1603 "movdqa %xmm8,0x220(%rcx)\n\t" /* context->Xmm8 */
1604 "movdqa %xmm9,0x230(%rcx)\n\t" /* context->Xmm9 */
1605 "movdqa %xmm10,0x240(%rcx)\n\t" /* context->Xmm10 */
1606 "movdqa %xmm11,0x250(%rcx)\n\t" /* context->Xmm11 */
1607 "movdqa %xmm12,0x260(%rcx)\n\t" /* context->Xmm12 */
1608 "movdqa %xmm13,0x270(%rcx)\n\t" /* context->Xmm13 */
1609 "movdqa %xmm14,0x280(%rcx)\n\t" /* context->Xmm14 */
1610 "movdqa %xmm15,0x290(%rcx)\n\t" /* context->Xmm15 */
1613 /***********************************************************************
1616 * Set the new CPU context.
1618 __ASM_GLOBAL_FUNC( set_cpu_context
,
1620 __ASM_CFI(".cfi_adjust_cfa_offset 40\n\t")
1621 "ldmxcsr 0x34(%rdi)\n\t" /* context->MxCsr */
1622 "movw 0x38(%rdi),%ax\n\t" /* context->SegCs */
1623 "movq %rax,8(%rsp)\n\t"
1624 "movw 0x42(%rdi),%ax\n\t" /* context->SegSs */
1625 "movq %rax,32(%rsp)\n\t"
1626 "movq 0x44(%rdi),%rax\n\t" /* context->Eflags */
1627 "movq %rax,16(%rsp)\n\t"
1628 "movq 0x80(%rdi),%rcx\n\t" /* context->Rcx */
1629 "movq 0x88(%rdi),%rdx\n\t" /* context->Rdx */
1630 "movq 0x90(%rdi),%rbx\n\t" /* context->Rbx */
1631 "movq 0x98(%rdi),%rax\n\t" /* context->Rsp */
1632 "movq %rax,24(%rsp)\n\t"
1633 "movq 0xa0(%rdi),%rbp\n\t" /* context->Rbp */
1634 "movq 0xa8(%rdi),%rsi\n\t" /* context->Rsi */
1635 "movq 0xb8(%rdi),%r8\n\t" /* context->R8 */
1636 "movq 0xc0(%rdi),%r9\n\t" /* context->R9 */
1637 "movq 0xc8(%rdi),%r10\n\t" /* context->R10 */
1638 "movq 0xd0(%rdi),%r11\n\t" /* context->R11 */
1639 "movq 0xd8(%rdi),%r12\n\t" /* context->R12 */
1640 "movq 0xe0(%rdi),%r13\n\t" /* context->R13 */
1641 "movq 0xe8(%rdi),%r14\n\t" /* context->R14 */
1642 "movq 0xf0(%rdi),%r15\n\t" /* context->R15 */
1643 "movq 0xf8(%rdi),%rax\n\t" /* context->Rip */
1644 "movq %rax,(%rsp)\n\t"
1645 "fxrstor 0x100(%rdi)\n\t" /* context->FtlSave */
1646 "movdqa 0x1a0(%rdi),%xmm0\n\t" /* context->Xmm0 */
1647 "movdqa 0x1b0(%rdi),%xmm1\n\t" /* context->Xmm1 */
1648 "movdqa 0x1c0(%rdi),%xmm2\n\t" /* context->Xmm2 */
1649 "movdqa 0x1d0(%rdi),%xmm3\n\t" /* context->Xmm3 */
1650 "movdqa 0x1e0(%rdi),%xmm4\n\t" /* context->Xmm4 */
1651 "movdqa 0x1f0(%rdi),%xmm5\n\t" /* context->Xmm5 */
1652 "movdqa 0x200(%rdi),%xmm6\n\t" /* context->Xmm6 */
1653 "movdqa 0x210(%rdi),%xmm7\n\t" /* context->Xmm7 */
1654 "movdqa 0x220(%rdi),%xmm8\n\t" /* context->Xmm8 */
1655 "movdqa 0x230(%rdi),%xmm9\n\t" /* context->Xmm9 */
1656 "movdqa 0x240(%rdi),%xmm10\n\t" /* context->Xmm10 */
1657 "movdqa 0x250(%rdi),%xmm11\n\t" /* context->Xmm11 */
1658 "movdqa 0x260(%rdi),%xmm12\n\t" /* context->Xmm12 */
1659 "movdqa 0x270(%rdi),%xmm13\n\t" /* context->Xmm13 */
1660 "movdqa 0x280(%rdi),%xmm14\n\t" /* context->Xmm14 */
1661 "movdqa 0x290(%rdi),%xmm15\n\t" /* context->Xmm15 */
1662 "movq 0x78(%rdi),%rax\n\t" /* context->Rax */
1663 "movq 0xb0(%rdi),%rdi\n\t" /* context->Rdi */
1666 /***********************************************************************
1669 * Copy a register context according to the flags.
1671 void copy_context( CONTEXT
*to
, const CONTEXT
*from
, DWORD flags
)
1673 flags
&= ~CONTEXT_AMD64
; /* get rid of CPU id */
1674 if (flags
& CONTEXT_CONTROL
)
1676 to
->Rbp
= from
->Rbp
;
1677 to
->Rip
= from
->Rip
;
1678 to
->Rsp
= from
->Rsp
;
1679 to
->SegCs
= from
->SegCs
;
1680 to
->SegSs
= from
->SegSs
;
1681 to
->EFlags
= from
->EFlags
;
1683 if (flags
& CONTEXT_INTEGER
)
1685 to
->Rax
= from
->Rax
;
1686 to
->Rcx
= from
->Rcx
;
1687 to
->Rdx
= from
->Rdx
;
1688 to
->Rbx
= from
->Rbx
;
1689 to
->Rsi
= from
->Rsi
;
1690 to
->Rdi
= from
->Rdi
;
1693 to
->R10
= from
->R10
;
1694 to
->R11
= from
->R11
;
1695 to
->R12
= from
->R12
;
1696 to
->R13
= from
->R13
;
1697 to
->R14
= from
->R14
;
1698 to
->R15
= from
->R15
;
1700 if (flags
& CONTEXT_SEGMENTS
)
1702 to
->SegDs
= from
->SegDs
;
1703 to
->SegEs
= from
->SegEs
;
1704 to
->SegFs
= from
->SegFs
;
1705 to
->SegGs
= from
->SegGs
;
1707 if (flags
& CONTEXT_FLOATING_POINT
)
1709 to
->MxCsr
= from
->MxCsr
;
1710 to
->u
.FltSave
= from
->u
.FltSave
;
1712 if (flags
& CONTEXT_DEBUG_REGISTERS
)
1714 to
->Dr0
= from
->Dr0
;
1715 to
->Dr1
= from
->Dr1
;
1716 to
->Dr2
= from
->Dr2
;
1717 to
->Dr3
= from
->Dr3
;
1718 to
->Dr6
= from
->Dr6
;
1719 to
->Dr7
= from
->Dr7
;
1724 /***********************************************************************
1727 * Convert a register context to the server format.
1729 NTSTATUS
context_to_server( context_t
*to
, const CONTEXT
*from
)
1731 DWORD flags
= from
->ContextFlags
& ~CONTEXT_AMD64
; /* get rid of CPU id */
1733 memset( to
, 0, sizeof(*to
) );
1734 to
->cpu
= CPU_x86_64
;
1736 if (flags
& CONTEXT_CONTROL
)
1738 to
->flags
|= SERVER_CTX_CONTROL
;
1739 to
->ctl
.x86_64_regs
.rbp
= from
->Rbp
;
1740 to
->ctl
.x86_64_regs
.rip
= from
->Rip
;
1741 to
->ctl
.x86_64_regs
.rsp
= from
->Rsp
;
1742 to
->ctl
.x86_64_regs
.cs
= from
->SegCs
;
1743 to
->ctl
.x86_64_regs
.ss
= from
->SegSs
;
1744 to
->ctl
.x86_64_regs
.flags
= from
->EFlags
;
1746 if (flags
& CONTEXT_INTEGER
)
1748 to
->flags
|= SERVER_CTX_INTEGER
;
1749 to
->integer
.x86_64_regs
.rax
= from
->Rax
;
1750 to
->integer
.x86_64_regs
.rcx
= from
->Rcx
;
1751 to
->integer
.x86_64_regs
.rdx
= from
->Rdx
;
1752 to
->integer
.x86_64_regs
.rbx
= from
->Rbx
;
1753 to
->integer
.x86_64_regs
.rsi
= from
->Rsi
;
1754 to
->integer
.x86_64_regs
.rdi
= from
->Rdi
;
1755 to
->integer
.x86_64_regs
.r8
= from
->R8
;
1756 to
->integer
.x86_64_regs
.r9
= from
->R9
;
1757 to
->integer
.x86_64_regs
.r10
= from
->R10
;
1758 to
->integer
.x86_64_regs
.r11
= from
->R11
;
1759 to
->integer
.x86_64_regs
.r12
= from
->R12
;
1760 to
->integer
.x86_64_regs
.r13
= from
->R13
;
1761 to
->integer
.x86_64_regs
.r14
= from
->R14
;
1762 to
->integer
.x86_64_regs
.r15
= from
->R15
;
1764 if (flags
& CONTEXT_SEGMENTS
)
1766 to
->flags
|= SERVER_CTX_SEGMENTS
;
1767 to
->seg
.x86_64_regs
.ds
= from
->SegDs
;
1768 to
->seg
.x86_64_regs
.es
= from
->SegEs
;
1769 to
->seg
.x86_64_regs
.fs
= from
->SegFs
;
1770 to
->seg
.x86_64_regs
.gs
= from
->SegGs
;
1772 if (flags
& CONTEXT_FLOATING_POINT
)
1774 to
->flags
|= SERVER_CTX_FLOATING_POINT
;
1775 memcpy( to
->fp
.x86_64_regs
.fpregs
, &from
->u
.FltSave
, sizeof(to
->fp
.x86_64_regs
.fpregs
) );
1777 if (flags
& CONTEXT_DEBUG_REGISTERS
)
1779 to
->flags
|= SERVER_CTX_DEBUG_REGISTERS
;
1780 to
->debug
.x86_64_regs
.dr0
= from
->Dr0
;
1781 to
->debug
.x86_64_regs
.dr1
= from
->Dr1
;
1782 to
->debug
.x86_64_regs
.dr2
= from
->Dr2
;
1783 to
->debug
.x86_64_regs
.dr3
= from
->Dr3
;
1784 to
->debug
.x86_64_regs
.dr6
= from
->Dr6
;
1785 to
->debug
.x86_64_regs
.dr7
= from
->Dr7
;
1787 return STATUS_SUCCESS
;
1791 /***********************************************************************
1792 * context_from_server
1794 * Convert a register context from the server format.
1796 NTSTATUS
context_from_server( CONTEXT
*to
, const context_t
*from
)
1798 if (from
->cpu
!= CPU_x86_64
) return STATUS_INVALID_PARAMETER
;
1800 to
->ContextFlags
= CONTEXT_AMD64
;
1801 if (from
->flags
& SERVER_CTX_CONTROL
)
1803 to
->ContextFlags
|= CONTEXT_CONTROL
;
1804 to
->Rbp
= from
->ctl
.x86_64_regs
.rbp
;
1805 to
->Rip
= from
->ctl
.x86_64_regs
.rip
;
1806 to
->Rsp
= from
->ctl
.x86_64_regs
.rsp
;
1807 to
->SegCs
= from
->ctl
.x86_64_regs
.cs
;
1808 to
->SegSs
= from
->ctl
.x86_64_regs
.ss
;
1809 to
->EFlags
= from
->ctl
.x86_64_regs
.flags
;
1812 if (from
->flags
& SERVER_CTX_INTEGER
)
1814 to
->ContextFlags
|= CONTEXT_INTEGER
;
1815 to
->Rax
= from
->integer
.x86_64_regs
.rax
;
1816 to
->Rcx
= from
->integer
.x86_64_regs
.rcx
;
1817 to
->Rdx
= from
->integer
.x86_64_regs
.rdx
;
1818 to
->Rbx
= from
->integer
.x86_64_regs
.rbx
;
1819 to
->Rsi
= from
->integer
.x86_64_regs
.rsi
;
1820 to
->Rdi
= from
->integer
.x86_64_regs
.rdi
;
1821 to
->R8
= from
->integer
.x86_64_regs
.r8
;
1822 to
->R9
= from
->integer
.x86_64_regs
.r9
;
1823 to
->R10
= from
->integer
.x86_64_regs
.r10
;
1824 to
->R11
= from
->integer
.x86_64_regs
.r11
;
1825 to
->R12
= from
->integer
.x86_64_regs
.r12
;
1826 to
->R13
= from
->integer
.x86_64_regs
.r13
;
1827 to
->R14
= from
->integer
.x86_64_regs
.r14
;
1828 to
->R15
= from
->integer
.x86_64_regs
.r15
;
1830 if (from
->flags
& SERVER_CTX_SEGMENTS
)
1832 to
->ContextFlags
|= CONTEXT_SEGMENTS
;
1833 to
->SegDs
= from
->seg
.x86_64_regs
.ds
;
1834 to
->SegEs
= from
->seg
.x86_64_regs
.es
;
1835 to
->SegFs
= from
->seg
.x86_64_regs
.fs
;
1836 to
->SegGs
= from
->seg
.x86_64_regs
.gs
;
1838 if (from
->flags
& SERVER_CTX_FLOATING_POINT
)
1840 to
->ContextFlags
|= CONTEXT_FLOATING_POINT
;
1841 memcpy( &to
->u
.FltSave
, from
->fp
.x86_64_regs
.fpregs
, sizeof(from
->fp
.x86_64_regs
.fpregs
) );
1842 to
->MxCsr
= to
->u
.FltSave
.MxCsr
;
1844 if (from
->flags
& SERVER_CTX_DEBUG_REGISTERS
)
1846 to
->ContextFlags
|= CONTEXT_DEBUG_REGISTERS
;
1847 to
->Dr0
= from
->debug
.x86_64_regs
.dr0
;
1848 to
->Dr1
= from
->debug
.x86_64_regs
.dr1
;
1849 to
->Dr2
= from
->debug
.x86_64_regs
.dr2
;
1850 to
->Dr3
= from
->debug
.x86_64_regs
.dr3
;
1851 to
->Dr6
= from
->debug
.x86_64_regs
.dr6
;
1852 to
->Dr7
= from
->debug
.x86_64_regs
.dr7
;
1854 return STATUS_SUCCESS
;
1858 extern void raise_func_trampoline( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, raise_func func
);
1859 __ASM_GLOBAL_FUNC( raise_func_trampoline
,
1860 __ASM_CFI(".cfi_signal_frame\n\t")
1861 __ASM_CFI(".cfi_def_cfa %rbp,144\n\t") /* red zone + rip + rbp */
1862 __ASM_CFI(".cfi_rel_offset %rip,8\n\t")
1863 __ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
1867 /***********************************************************************
1870 * Setup a proper stack frame for the raise function, and modify the
1871 * sigcontext so that the return from the signal handler will call
1872 * the raise function.
1874 static EXCEPTION_RECORD
*setup_exception( ucontext_t
*sigcontext
, raise_func func
)
1879 EXCEPTION_RECORD rec
;
1882 ULONG64 red_zone
[16];
1885 DWORD exception_code
= 0;
1887 stack
= (struct stack_layout
*)(RSP_sig(sigcontext
) & ~15);
1889 /* stack sanity checks */
1891 if (is_inside_signal_stack( stack
))
1893 ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1894 GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
), (ULONG_PTR
)RSP_sig(sigcontext
),
1895 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1899 if (stack
- 1 > stack
|| /* check for overflow in subtraction */
1900 (char *)stack
<= (char *)NtCurrentTeb()->DeallocationStack
||
1901 (char *)stack
> (char *)NtCurrentTeb()->Tib
.StackBase
)
1903 WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1904 GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
), (ULONG_PTR
)RSP_sig(sigcontext
),
1905 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1907 else if ((char *)(stack
- 1) < (char *)NtCurrentTeb()->DeallocationStack
+ 4096)
1909 /* stack overflow on last page, unrecoverable */
1910 UINT diff
= (char *)NtCurrentTeb()->DeallocationStack
+ 4096 - (char *)(stack
- 1);
1911 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1912 diff
, GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
),
1913 (ULONG_PTR
)RSP_sig(sigcontext
), NtCurrentTeb()->DeallocationStack
,
1914 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1917 else if ((char *)(stack
- 1) < (char *)NtCurrentTeb()->Tib
.StackLimit
)
1919 /* stack access below stack limit, may be recoverable */
1920 if (virtual_handle_stack_fault( stack
- 1 )) exception_code
= EXCEPTION_STACK_OVERFLOW
;
1923 UINT diff
= (char *)NtCurrentTeb()->Tib
.StackLimit
- (char *)(stack
- 1);
1924 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1925 diff
, GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
),
1926 (ULONG_PTR
)RSP_sig(sigcontext
), NtCurrentTeb()->DeallocationStack
,
1927 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1932 stack
--; /* push the stack_layout structure */
1933 #if defined(VALGRIND_MAKE_MEM_UNDEFINED)
1934 VALGRIND_MAKE_MEM_UNDEFINED(stack
, sizeof(*stack
));
1935 #elif defined(VALGRIND_MAKE_WRITABLE)
1936 VALGRIND_MAKE_WRITABLE(stack
, sizeof(*stack
));
1938 stack
->rec
.ExceptionRecord
= NULL
;
1939 stack
->rec
.ExceptionCode
= exception_code
;
1940 stack
->rec
.ExceptionFlags
= EXCEPTION_CONTINUABLE
;
1941 stack
->rec
.ExceptionAddress
= (void *)RIP_sig(sigcontext
);
1942 stack
->rec
.NumberParameters
= 0;
1943 save_context( &stack
->context
, sigcontext
);
1945 /* store return address and %rbp without aligning, so that the offset is fixed */
1946 rsp_ptr
= (ULONG64
*)RSP_sig(sigcontext
) - 16;
1947 *(--rsp_ptr
) = RIP_sig(sigcontext
);
1948 *(--rsp_ptr
) = RBP_sig(sigcontext
);
1950 /* now modify the sigcontext to return to the raise function */
1951 RIP_sig(sigcontext
) = (ULONG_PTR
)raise_func_trampoline
;
1952 RDI_sig(sigcontext
) = (ULONG_PTR
)&stack
->rec
;
1953 RSI_sig(sigcontext
) = (ULONG_PTR
)&stack
->context
;
1954 RDX_sig(sigcontext
) = (ULONG_PTR
)func
;
1955 RBP_sig(sigcontext
) = (ULONG_PTR
)rsp_ptr
;
1956 RSP_sig(sigcontext
) = (ULONG_PTR
)stack
;
1957 /* clear single-step, direction, and align check flag */
1958 EFL_sig(sigcontext
) &= ~(0x100|0x400|0x40000);
1964 /**********************************************************************
1965 * find_function_info
1967 static RUNTIME_FUNCTION
*find_function_info( ULONG64 pc
, HMODULE module
,
1968 RUNTIME_FUNCTION
*func
, ULONG size
)
1971 int max
= size
/sizeof(*func
) - 1;
1975 int pos
= (min
+ max
) / 2;
1976 if ((char *)pc
< (char *)module
+ func
[pos
].BeginAddress
) max
= pos
- 1;
1977 else if ((char *)pc
>= (char *)module
+ func
[pos
].EndAddress
) min
= pos
+ 1;
1981 while (func
->UnwindData
& 1) /* follow chained entry */
1982 func
= (RUNTIME_FUNCTION
*)((char *)module
+ (func
->UnwindData
& ~1));
1989 /**********************************************************************
1990 * lookup_function_info
1992 static RUNTIME_FUNCTION
*lookup_function_info( ULONG64 pc
, ULONG64
*base
, LDR_MODULE
**module
)
1994 RUNTIME_FUNCTION
*func
= NULL
;
1995 struct dynamic_unwind_entry
*entry
;
1998 /* PE module or wine module */
1999 if (!LdrFindEntryForAddress( (void *)pc
, module
))
2001 *base
= (ULONG64
)(*module
)->BaseAddress
;
2002 if ((func
= RtlImageDirectoryEntryToData( (*module
)->BaseAddress
, TRUE
,
2003 IMAGE_DIRECTORY_ENTRY_EXCEPTION
, &size
)))
2005 /* lookup in function table */
2006 func
= find_function_info( pc
, (*module
)->BaseAddress
, func
, size
);
2013 RtlEnterCriticalSection( &dynamic_unwind_section
);
2014 LIST_FOR_EACH_ENTRY( entry
, &dynamic_unwind_list
, struct dynamic_unwind_entry
, entry
)
2016 if (pc
>= entry
->base
&& pc
< entry
->base
+ entry
->size
)
2018 *base
= entry
->base
;
2020 /* use callback or lookup in function table */
2021 if (entry
->callback
)
2022 func
= entry
->callback( pc
, entry
->context
);
2024 func
= find_function_info( pc
, (HMODULE
)entry
->base
, entry
->table
, entry
->table_size
);
2028 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2034 /**********************************************************************
2037 * Call a single exception handler.
2038 * FIXME: Handle nested exceptions.
2040 static NTSTATUS
call_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
, CONTEXT
*orig_context
)
2044 dispatch
->ControlPc
= dispatch
->ContextRecord
->Rip
;
2046 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2047 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
2048 res
= dispatch
->LanguageHandler( rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
2049 TRACE( "handler at %p returned %u\n", dispatch
->LanguageHandler
, res
);
2053 case ExceptionContinueExecution
:
2054 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
2055 *orig_context
= *dispatch
->ContextRecord
;
2056 return STATUS_SUCCESS
;
2057 case ExceptionContinueSearch
:
2059 case ExceptionNestedException
:
2062 return STATUS_INVALID_DISPOSITION
;
2064 return STATUS_UNHANDLED_EXCEPTION
;
2068 /**********************************************************************
2071 * Call a single exception handler from the TEB chain.
2072 * FIXME: Handle nested exceptions.
2074 static NTSTATUS
call_teb_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
,
2075 EXCEPTION_REGISTRATION_RECORD
*teb_frame
, CONTEXT
*orig_context
)
2077 EXCEPTION_REGISTRATION_RECORD
*dispatcher
;
2080 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
2081 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
2082 res
= teb_frame
->Handler( rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
2083 TRACE( "handler at %p returned %u\n", teb_frame
->Handler
, res
);
2087 case ExceptionContinueExecution
:
2088 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
2089 *orig_context
= *dispatch
->ContextRecord
;
2090 return STATUS_SUCCESS
;
2091 case ExceptionContinueSearch
:
2093 case ExceptionNestedException
:
2096 return STATUS_INVALID_DISPOSITION
;
2098 return STATUS_UNHANDLED_EXCEPTION
;
2102 /**********************************************************************
2103 * call_stack_handlers
2105 * Call the stack handlers chain.
2107 static NTSTATUS
call_stack_handlers( EXCEPTION_RECORD
*rec
, CONTEXT
*orig_context
)
2109 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
2110 UNWIND_HISTORY_TABLE table
;
2111 DISPATCHER_CONTEXT dispatch
;
2112 CONTEXT context
, new_context
;
2116 context
= *orig_context
;
2117 dispatch
.TargetIp
= 0;
2118 dispatch
.ContextRecord
= &context
;
2119 dispatch
.HistoryTable
= &table
;
2120 dispatch
.ScopeIndex
= 0; /* FIXME */
2123 new_context
= context
;
2125 /* FIXME: should use the history table to make things faster */
2127 dispatch
.ImageBase
= 0;
2129 /* first look for PE exception information */
2131 if ((dispatch
.FunctionEntry
= lookup_function_info( context
.Rip
, &dispatch
.ImageBase
, &module
)))
2133 dispatch
.LanguageHandler
= RtlVirtualUnwind( UNW_FLAG_EHANDLER
, dispatch
.ImageBase
,
2134 context
.Rip
, dispatch
.FunctionEntry
,
2135 &new_context
, &dispatch
.HandlerData
,
2136 &dispatch
.EstablisherFrame
, NULL
);
2140 /* then look for host system exception information */
2142 if (!module
|| (module
->Flags
& LDR_WINE_INTERNAL
))
2144 struct dwarf_eh_bases bases
;
2145 const struct dwarf_fde
*fde
= _Unwind_Find_FDE( (void *)(context
.Rip
- 1), &bases
);
2149 status
= dwarf_virtual_unwind( context
.Rip
, &dispatch
.EstablisherFrame
, &new_context
,
2150 fde
, &bases
, &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
2151 if (status
!= STATUS_SUCCESS
) return status
;
2152 dispatch
.FunctionEntry
= NULL
;
2153 if (dispatch
.LanguageHandler
&& !module
)
2155 FIXME( "calling personality routine in system library not supported yet\n" );
2156 dispatch
.LanguageHandler
= NULL
;
2161 else WARN( "exception data not found in %s\n", debugstr_w(module
->BaseDllName
.Buffer
) );
2163 /* no exception information, treat as a leaf function */
2165 new_context
.Rip
= *(ULONG64
*)context
.Rsp
;
2166 new_context
.Rsp
= context
.Rsp
+ sizeof(ULONG64
);
2167 dispatch
.EstablisherFrame
= new_context
.Rsp
;
2168 dispatch
.LanguageHandler
= NULL
;
2171 if (!dispatch
.EstablisherFrame
) break;
2173 if ((dispatch
.EstablisherFrame
& 7) ||
2174 dispatch
.EstablisherFrame
< (ULONG64
)NtCurrentTeb()->Tib
.StackLimit
||
2175 dispatch
.EstablisherFrame
> (ULONG64
)NtCurrentTeb()->Tib
.StackBase
)
2177 ERR( "invalid frame %lx (%p-%p)\n", dispatch
.EstablisherFrame
,
2178 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
2179 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
2183 if (dispatch
.LanguageHandler
)
2185 status
= call_handler( rec
, &dispatch
, orig_context
);
2186 if (status
!= STATUS_UNHANDLED_EXCEPTION
) return status
;
2188 /* hack: call wine handlers registered in the tib list */
2189 else while ((ULONG64
)teb_frame
< new_context
.Rsp
)
2191 TRACE( "found wine frame %p rsp %lx handler %p\n",
2192 teb_frame
, new_context
.Rsp
, teb_frame
->Handler
);
2193 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
2194 context
= *orig_context
;
2195 status
= call_teb_handler( rec
, &dispatch
, teb_frame
, orig_context
);
2196 if (status
!= STATUS_UNHANDLED_EXCEPTION
) return status
;
2197 teb_frame
= teb_frame
->Prev
;
2200 if (new_context
.Rsp
== (ULONG64
)NtCurrentTeb()->Tib
.StackBase
) break;
2201 context
= new_context
;
2203 return STATUS_UNHANDLED_EXCEPTION
;
2207 /*******************************************************************
2210 * Implementation of NtRaiseException.
2212 static NTSTATUS
raise_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, BOOL first_chance
)
2220 TRACE( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
2221 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
2222 context
->Rip
, GetCurrentThreadId() );
2223 for (c
= 0; c
< min( EXCEPTION_MAXIMUM_PARAMETERS
, rec
->NumberParameters
); c
++)
2224 TRACE( " info[%d]=%016lx\n", c
, rec
->ExceptionInformation
[c
] );
2225 if (rec
->ExceptionCode
== EXCEPTION_WINE_STUB
)
2227 if (rec
->ExceptionInformation
[1] >> 16)
2228 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
2229 rec
->ExceptionAddress
,
2230 (char*)rec
->ExceptionInformation
[0], (char*)rec
->ExceptionInformation
[1] );
2232 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
2233 rec
->ExceptionAddress
,
2234 (char*)rec
->ExceptionInformation
[0], rec
->ExceptionInformation
[1] );
2238 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
2239 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
2240 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
2241 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
2242 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
2243 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
2244 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
2245 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
2247 status
= send_debug_event( rec
, TRUE
, context
);
2248 if (status
== DBG_CONTINUE
|| status
== DBG_EXCEPTION_HANDLED
)
2249 return STATUS_SUCCESS
;
2251 if (call_vectored_handlers( rec
, context
) == EXCEPTION_CONTINUE_EXECUTION
)
2252 return STATUS_SUCCESS
;
2254 if ((status
= call_stack_handlers( rec
, context
)) != STATUS_UNHANDLED_EXCEPTION
)
2258 /* last chance exception */
2260 status
= send_debug_event( rec
, FALSE
, context
);
2261 if (status
!= DBG_CONTINUE
)
2263 if (rec
->ExceptionFlags
& EH_STACK_INVALID
)
2264 ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
2265 else if (rec
->ExceptionCode
== STATUS_NONCONTINUABLE_EXCEPTION
)
2266 ERR("Process attempted to continue execution after noncontinuable exception.\n");
2268 ERR("Unhandled exception code %x flags %x addr %p\n",
2269 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
);
2270 NtTerminateProcess( NtCurrentProcess(), rec
->ExceptionCode
);
2272 return STATUS_SUCCESS
;
2276 /**********************************************************************
2277 * raise_segv_exception
2279 static void raise_segv_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2283 switch(rec
->ExceptionCode
)
2285 case EXCEPTION_ACCESS_VIOLATION
:
2286 if (rec
->NumberParameters
== 2)
2288 if (!(rec
->ExceptionCode
= virtual_handle_fault( (void *)rec
->ExceptionInformation
[1],
2289 rec
->ExceptionInformation
[0], FALSE
)))
2290 set_cpu_context( context
);
2294 status
= raise_exception( rec
, context
, TRUE
);
2295 if (status
) raise_status( status
, rec
);
2296 set_cpu_context( context
);
2300 /**********************************************************************
2301 * raise_generic_exception
2303 * Generic raise function for exceptions that don't need special treatment.
2305 static void raise_generic_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2307 NTSTATUS status
= raise_exception( rec
, context
, TRUE
);
2308 if (status
) raise_status( status
, rec
);
2309 set_cpu_context( context
);
2313 /**********************************************************************
2316 * Handler for SIGSEGV and related errors.
2318 static void segv_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2320 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_segv_exception
);
2321 ucontext_t
*ucontext
= sigcontext
;
2323 switch(TRAP_sig(ucontext
))
2325 case TRAP_x86_OFLOW
: /* Overflow exception */
2326 rec
->ExceptionCode
= EXCEPTION_INT_OVERFLOW
;
2328 case TRAP_x86_BOUND
: /* Bound range exception */
2329 rec
->ExceptionCode
= EXCEPTION_ARRAY_BOUNDS_EXCEEDED
;
2331 case TRAP_x86_PRIVINFLT
: /* Invalid opcode exception */
2332 rec
->ExceptionCode
= EXCEPTION_ILLEGAL_INSTRUCTION
;
2334 case TRAP_x86_STKFLT
: /* Stack fault */
2335 rec
->ExceptionCode
= EXCEPTION_STACK_OVERFLOW
;
2337 case TRAP_x86_SEGNPFLT
: /* Segment not present exception */
2338 case TRAP_x86_PROTFLT
: /* General protection fault */
2339 case TRAP_x86_UNKNOWN
: /* Unknown fault code */
2340 rec
->ExceptionCode
= ERROR_sig(ucontext
) ? EXCEPTION_ACCESS_VIOLATION
: EXCEPTION_PRIV_INSTRUCTION
;
2341 rec
->ExceptionCode
= EXCEPTION_ACCESS_VIOLATION
;
2343 case TRAP_x86_PAGEFLT
: /* Page fault */
2344 rec
->ExceptionCode
= EXCEPTION_ACCESS_VIOLATION
;
2345 rec
->NumberParameters
= 2;
2346 rec
->ExceptionInformation
[0] = (ERROR_sig(ucontext
) & 2) != 0;
2347 rec
->ExceptionInformation
[1] = (ULONG_PTR
)siginfo
->si_addr
;
2349 case TRAP_x86_ALIGNFLT
: /* Alignment check exception */
2350 rec
->ExceptionCode
= EXCEPTION_DATATYPE_MISALIGNMENT
;
2353 ERR( "Got unexpected trap %ld\n", (ULONG_PTR
)TRAP_sig(ucontext
) );
2355 case TRAP_x86_NMI
: /* NMI interrupt */
2356 case TRAP_x86_DNA
: /* Device not available exception */
2357 case TRAP_x86_DOUBLEFLT
: /* Double fault exception */
2358 case TRAP_x86_TSSFLT
: /* Invalid TSS exception */
2359 case TRAP_x86_MCHK
: /* Machine check exception */
2360 case TRAP_x86_CACHEFLT
: /* Cache flush exception */
2361 rec
->ExceptionCode
= EXCEPTION_ILLEGAL_INSTRUCTION
;
2366 /**********************************************************************
2369 * Handler for SIGTRAP.
2371 static void trap_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2373 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2375 switch (siginfo
->si_code
)
2377 case TRAP_TRACE
: /* Single-step exception */
2378 case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
2379 rec
->ExceptionCode
= EXCEPTION_SINGLE_STEP
;
2381 case TRAP_BRKPT
: /* Breakpoint exception */
2382 rec
->ExceptionAddress
= (char *)rec
->ExceptionAddress
- 1; /* back up over the int3 instruction */
2385 rec
->ExceptionCode
= EXCEPTION_BREAKPOINT
;
2390 /**********************************************************************
2393 * Handler for SIGFPE.
2395 static void fpe_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2397 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2399 switch (siginfo
->si_code
)
2402 rec
->ExceptionCode
= EXCEPTION_ARRAY_BOUNDS_EXCEEDED
;
2405 rec
->ExceptionCode
= EXCEPTION_INT_DIVIDE_BY_ZERO
;
2408 rec
->ExceptionCode
= EXCEPTION_INT_OVERFLOW
;
2411 rec
->ExceptionCode
= EXCEPTION_FLT_DIVIDE_BY_ZERO
;
2414 rec
->ExceptionCode
= EXCEPTION_FLT_OVERFLOW
;
2417 rec
->ExceptionCode
= EXCEPTION_FLT_UNDERFLOW
;
2420 rec
->ExceptionCode
= EXCEPTION_FLT_INEXACT_RESULT
;
2424 rec
->ExceptionCode
= EXCEPTION_FLT_INVALID_OPERATION
;
2429 /**********************************************************************
2432 * Handler for SIGINT.
2434 static void int_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2436 if (!dispatch_signal(SIGINT
))
2438 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2439 rec
->ExceptionCode
= CONTROL_C_EXIT
;
2444 /**********************************************************************
2447 * Handler for SIGABRT.
2449 static void abrt_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2451 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2452 rec
->ExceptionCode
= EXCEPTION_WINE_ASSERTION
;
2453 rec
->ExceptionFlags
= EH_NONCONTINUABLE
;
2457 /**********************************************************************
2460 * Handler for SIGQUIT.
2462 static void quit_handler( int signal
, siginfo_t
*siginfo
, void *ucontext
)
2468 /**********************************************************************
2471 * Handler for SIGUSR1, used to signal a thread that it got suspended.
2473 static void usr1_handler( int signal
, siginfo_t
*siginfo
, void *ucontext
)
2477 save_context( &context
, ucontext
);
2478 wait_suspend( &context
);
2479 restore_context( &context
, ucontext
);
2483 /***********************************************************************
2484 * __wine_set_signal_handler (NTDLL.@)
2486 int CDECL
__wine_set_signal_handler(unsigned int sig
, wine_signal_handler wsh
)
2488 if (sig
> sizeof(handlers
) / sizeof(handlers
[0])) return -1;
2489 if (handlers
[sig
] != NULL
) return -2;
2490 handlers
[sig
] = wsh
;
2495 /**********************************************************************
2496 * signal_alloc_thread
2498 NTSTATUS
signal_alloc_thread( TEB
**teb
)
2500 static size_t sigstack_zero_bits
;
2504 if (!sigstack_zero_bits
)
2506 size_t min_size
= teb_size
+ max( MINSIGSTKSZ
, 8192 );
2507 /* find the first power of two not smaller than min_size */
2508 sigstack_zero_bits
= 12;
2509 while ((1u << sigstack_zero_bits
) < min_size
) sigstack_zero_bits
++;
2510 signal_stack_size
= (1 << sigstack_zero_bits
) - teb_size
;
2511 assert( sizeof(TEB
) <= teb_size
);
2514 size
= 1 << sigstack_zero_bits
;
2516 if (!(status
= NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb
, sigstack_zero_bits
,
2517 &size
, MEM_COMMIT
| MEM_TOP_DOWN
, PAGE_READWRITE
)))
2519 (*teb
)->Tib
.Self
= &(*teb
)->Tib
;
2520 (*teb
)->Tib
.ExceptionList
= (void *)~0UL;
2526 /**********************************************************************
2527 * signal_free_thread
2529 void signal_free_thread( TEB
*teb
)
2533 if (teb
->DeallocationStack
)
2536 NtFreeVirtualMemory( GetCurrentProcess(), &teb
->DeallocationStack
, &size
, MEM_RELEASE
);
2539 NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb
, &size
, MEM_RELEASE
);
2543 static void init_teb_key(void)
2545 pthread_key_create( &teb_key
, NULL
);
2549 /**********************************************************************
2550 * signal_init_thread
2552 void signal_init_thread( TEB
*teb
)
2554 const WORD fpu_cw
= 0x27f;
2558 static pthread_once_t init_once
= PTHREAD_ONCE_INIT
;
2561 #if defined __linux__
2562 arch_prctl( ARCH_SET_GS
, teb
);
2563 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
2564 amd64_set_gsbase( teb
);
2565 #elif defined(__NetBSD__)
2566 sysarch( X86_64_SET_GSBASE
, &teb
);
2567 #elif defined (__APPLE__)
2568 /* FIXME: Actually setting %gs needs support from the OS */
2569 pthread_once( &init_once
, init_teb_key
);
2570 pthread_setspecific( teb_key
, teb
);
2572 # error Please define setting %gs for your architecture
2575 ss
.ss_sp
= (char *)teb
+ teb_size
;
2576 ss
.ss_size
= signal_stack_size
;
2578 if (sigaltstack(&ss
, NULL
) == -1) perror( "sigaltstack" );
2581 __asm__
volatile ("fninit; fldcw %0" : : "m" (fpu_cw
));
2583 FIXME("FPU setup not implemented for this platform.\n");
2587 /**********************************************************************
2588 * signal_init_process
2590 void signal_init_process(void)
2592 struct sigaction sig_act
;
2594 sig_act
.sa_mask
= server_block_set
;
2595 sig_act
.sa_flags
= SA_RESTART
| SA_SIGINFO
| SA_ONSTACK
;
2597 sig_act
.sa_sigaction
= int_handler
;
2598 if (sigaction( SIGINT
, &sig_act
, NULL
) == -1) goto error
;
2599 sig_act
.sa_sigaction
= fpe_handler
;
2600 if (sigaction( SIGFPE
, &sig_act
, NULL
) == -1) goto error
;
2601 sig_act
.sa_sigaction
= abrt_handler
;
2602 if (sigaction( SIGABRT
, &sig_act
, NULL
) == -1) goto error
;
2603 sig_act
.sa_sigaction
= quit_handler
;
2604 if (sigaction( SIGQUIT
, &sig_act
, NULL
) == -1) goto error
;
2605 sig_act
.sa_sigaction
= usr1_handler
;
2606 if (sigaction( SIGUSR1
, &sig_act
, NULL
) == -1) goto error
;
2608 sig_act
.sa_sigaction
= segv_handler
;
2609 if (sigaction( SIGSEGV
, &sig_act
, NULL
) == -1) goto error
;
2610 if (sigaction( SIGILL
, &sig_act
, NULL
) == -1) goto error
;
2612 if (sigaction( SIGBUS
, &sig_act
, NULL
) == -1) goto error
;
2616 sig_act
.sa_sigaction
= trap_handler
;
2617 if (sigaction( SIGTRAP
, &sig_act
, NULL
) == -1) goto error
;
2622 perror("sigaction");
2627 /**********************************************************************
2628 * RtlAddFunctionTable (NTDLL.@)
2630 BOOLEAN CDECL
RtlAddFunctionTable( RUNTIME_FUNCTION
*table
, DWORD count
, DWORD64 addr
)
2632 struct dynamic_unwind_entry
*entry
;
2634 TRACE( "%p %u %lx\n", table
, count
, addr
);
2636 /* NOTE: Windows doesn't check if table is aligned or a NULL pointer */
2638 entry
= RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry
) );
2643 entry
->size
= table
[count
- 1].EndAddress
;
2644 entry
->table
= table
;
2645 entry
->table_size
= count
* sizeof(RUNTIME_FUNCTION
);
2646 entry
->callback
= NULL
;
2647 entry
->context
= NULL
;
2649 RtlEnterCriticalSection( &dynamic_unwind_section
);
2650 list_add_tail( &dynamic_unwind_list
, &entry
->entry
);
2651 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2657 /**********************************************************************
2658 * RtlInstallFunctionTableCallback (NTDLL.@)
2660 BOOLEAN CDECL
RtlInstallFunctionTableCallback( DWORD64 table
, DWORD64 base
, DWORD length
,
2661 PGET_RUNTIME_FUNCTION_CALLBACK callback
, PVOID context
, PCWSTR dll
)
2663 struct dynamic_unwind_entry
*entry
;
2665 TRACE( "%lx %lx %d %p %p %s\n", table
, base
, length
, callback
, context
, wine_dbgstr_w(dll
) );
2667 /* NOTE: Windows doesn't check if the provided callback is a NULL pointer */
2669 /* both low-order bits must be set */
2670 if ((table
& 0x3) != 0x3)
2673 entry
= RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry
) );
2678 entry
->size
= length
;
2679 entry
->table
= (RUNTIME_FUNCTION
*)table
;
2680 entry
->table_size
= 0;
2681 entry
->callback
= callback
;
2682 entry
->context
= context
;
2684 RtlEnterCriticalSection( &dynamic_unwind_section
);
2685 list_add_tail( &dynamic_unwind_list
, &entry
->entry
);
2686 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2692 /**********************************************************************
2693 * RtlDeleteFunctionTable (NTDLL.@)
2695 BOOLEAN CDECL
RtlDeleteFunctionTable( RUNTIME_FUNCTION
*table
)
2697 struct dynamic_unwind_entry
*entry
, *to_free
= NULL
;
2699 TRACE( "%p\n", table
);
2701 RtlEnterCriticalSection( &dynamic_unwind_section
);
2702 LIST_FOR_EACH_ENTRY( entry
, &dynamic_unwind_list
, struct dynamic_unwind_entry
, entry
)
2704 if (entry
->table
== table
)
2707 list_remove( &entry
->entry
);
2711 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2716 RtlFreeHeap( GetProcessHeap(), 0, to_free
);
2721 /**********************************************************************
2722 * RtlLookupFunctionEntry (NTDLL.@)
2724 PRUNTIME_FUNCTION WINAPI
RtlLookupFunctionEntry( ULONG64 pc
, ULONG64
*base
, UNWIND_HISTORY_TABLE
*table
)
2727 RUNTIME_FUNCTION
*func
;
2729 /* FIXME: should use the history table to make things faster */
2731 func
= lookup_function_info( pc
, base
, &module
);
2736 WARN( "no exception table found in module %p pc %lx\n", module
->BaseAddress
, pc
);
2738 WARN( "module not found for %lx\n", pc
);
2744 static ULONG64
get_int_reg( CONTEXT
*context
, int reg
)
2746 return *(&context
->Rax
+ reg
);
2749 static void set_int_reg( CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
, int reg
, ULONG64 val
)
2751 *(&context
->Rax
+ reg
) = val
;
2752 if (ctx_ptr
) ctx_ptr
->u2
.IntegerContext
[reg
] = &context
->Rax
+ reg
;
2755 static void set_float_reg( CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
, int reg
, M128A val
)
2757 *(&context
->u
.s
.Xmm0
+ reg
) = val
;
2758 if (ctx_ptr
) ctx_ptr
->u
.FloatingContext
[reg
] = &context
->u
.s
.Xmm0
+ reg
;
2761 static int get_opcode_size( struct opcode op
)
2765 case UWOP_ALLOC_LARGE
:
2766 return 2 + (op
.info
!= 0);
2767 case UWOP_SAVE_NONVOL
:
2768 case UWOP_SAVE_XMM128
:
2770 case UWOP_SAVE_NONVOL_FAR
:
2771 case UWOP_SAVE_XMM128_FAR
:
2778 static BOOL
is_inside_epilog( BYTE
*pc
, ULONG64 base
, const RUNTIME_FUNCTION
*function
)
2780 /* add or lea must be the first instruction, and it must have a rex.W prefix */
2781 if ((pc
[0] & 0xf8) == 0x48)
2785 case 0x81: /* add $nnnn,%rsp */
2786 if (pc
[0] == 0x48 && pc
[2] == 0xc4)
2792 case 0x83: /* add $n,%rsp */
2793 if (pc
[0] == 0x48 && pc
[2] == 0xc4)
2799 case 0x8d: /* lea n(reg),%rsp */
2800 if (pc
[0] & 0x06) return FALSE
; /* rex.RX must be cleared */
2801 if (((pc
[2] >> 3) & 7) != 4) return FALSE
; /* dest reg mus be %rsp */
2802 if ((pc
[2] & 7) == 4) return FALSE
; /* no SIB byte allowed */
2803 if ((pc
[2] >> 6) == 1) /* 8-bit offset */
2808 if ((pc
[2] >> 6) == 2) /* 32-bit offset */
2817 /* now check for various pop instructions */
2821 if ((*pc
& 0xf0) == 0x40) pc
++; /* rex prefix */
2825 case 0x58: /* pop %rax/%r8 */
2826 case 0x59: /* pop %rcx/%r9 */
2827 case 0x5a: /* pop %rdx/%r10 */
2828 case 0x5b: /* pop %rbx/%r11 */
2829 case 0x5c: /* pop %rsp/%r12 */
2830 case 0x5d: /* pop %rbp/%r13 */
2831 case 0x5e: /* pop %rsi/%r14 */
2832 case 0x5f: /* pop %rdi/%r15 */
2835 case 0xc2: /* ret $nn */
2836 case 0xc3: /* ret */
2838 case 0xe9: /* jmp nnnn */
2839 pc
+= 5 + *(LONG
*)(pc
+ 1);
2840 if (pc
- (BYTE
*)base
>= function
->BeginAddress
&& pc
- (BYTE
*)base
< function
->EndAddress
)
2843 case 0xeb: /* jmp n */
2844 pc
+= 2 + (signed char)pc
[1];
2845 if (pc
- (BYTE
*)base
>= function
->BeginAddress
&& pc
- (BYTE
*)base
< function
->EndAddress
)
2848 case 0xf3: /* rep; ret (for amd64 prediction bug) */
2849 return pc
[1] == 0xc3;
2855 /* execute a function epilog, which must have been validated with is_inside_epilog() */
2856 static void interpret_epilog( BYTE
*pc
, CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
)
2862 if ((*pc
& 0xf0) == 0x40) rex
= *pc
++ & 0x0f; /* rex prefix */
2866 case 0x58: /* pop %rax/r8 */
2867 case 0x59: /* pop %rcx/r9 */
2868 case 0x5a: /* pop %rdx/r10 */
2869 case 0x5b: /* pop %rbx/r11 */
2870 case 0x5c: /* pop %rsp/r12 */
2871 case 0x5d: /* pop %rbp/r13 */
2872 case 0x5e: /* pop %rsi/r14 */
2873 case 0x5f: /* pop %rdi/r15 */
2874 set_int_reg( context
, ctx_ptr
, *pc
- 0x58 + (rex
& 1) * 8, *(ULONG64
*)context
->Rsp
);
2875 context
->Rsp
+= sizeof(ULONG64
);
2878 case 0x81: /* add $nnnn,%rsp */
2879 context
->Rsp
+= *(LONG
*)(pc
+ 2);
2880 pc
+= 2 + sizeof(LONG
);
2882 case 0x83: /* add $n,%rsp */
2883 context
->Rsp
+= (signed char)pc
[2];
2887 if ((pc
[1] >> 6) == 1) /* lea n(reg),%rsp */
2889 context
->Rsp
= get_int_reg( context
, (pc
[1] & 7) + (rex
& 1) * 8 ) + (signed char)pc
[2];
2892 else /* lea nnnn(reg),%rsp */
2894 context
->Rsp
= get_int_reg( context
, (pc
[1] & 7) + (rex
& 1) * 8 ) + *(LONG
*)(pc
+ 2);
2895 pc
+= 2 + sizeof(LONG
);
2898 case 0xc2: /* ret $nn */
2899 context
->Rip
= *(ULONG64
*)context
->Rsp
;
2900 context
->Rsp
+= sizeof(ULONG64
) + *(WORD
*)(pc
+ 1);
2902 case 0xc3: /* ret */
2903 case 0xf3: /* rep; ret */
2904 context
->Rip
= *(ULONG64
*)context
->Rsp
;
2905 context
->Rsp
+= sizeof(ULONG64
);
2907 case 0xe9: /* jmp nnnn */
2908 pc
+= 5 + *(LONG
*)(pc
+ 1);
2910 case 0xeb: /* jmp n */
2911 pc
+= 2 + (signed char)pc
[1];
2918 /**********************************************************************
2919 * RtlVirtualUnwind (NTDLL.@)
2921 PVOID WINAPI
RtlVirtualUnwind( ULONG type
, ULONG64 base
, ULONG64 pc
,
2922 RUNTIME_FUNCTION
*function
, CONTEXT
*context
,
2923 PVOID
*data
, ULONG64
*frame_ret
,
2924 KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
)
2926 union handler_data
*handler_data
;
2928 struct UNWIND_INFO
*info
;
2929 unsigned int i
, prolog_offset
;
2931 TRACE( "type %x rip %lx rsp %lx\n", type
, pc
, context
->Rsp
);
2932 if (TRACE_ON(seh
)) dump_unwind_info( base
, function
);
2934 frame
= *frame_ret
= context
->Rsp
;
2937 info
= (struct UNWIND_INFO
*)((char *)base
+ function
->UnwindData
);
2938 handler_data
= (union handler_data
*)&info
->opcodes
[(info
->count
+ 1) & ~1];
2940 if (info
->version
!= 1)
2942 FIXME( "unknown unwind info version %u at %p\n", info
->version
, info
);
2946 if (info
->frame_reg
)
2947 frame
= get_int_reg( context
, info
->frame_reg
) - info
->frame_offset
* 16;
2949 /* check if in prolog */
2950 if (pc
>= base
+ function
->BeginAddress
&& pc
< base
+ function
->BeginAddress
+ info
->prolog
)
2952 prolog_offset
= pc
- base
- function
->BeginAddress
;
2957 if (is_inside_epilog( (BYTE
*)pc
, base
, function
))
2959 interpret_epilog( (BYTE
*)pc
, context
, ctx_ptr
);
2965 for (i
= 0; i
< info
->count
; i
+= get_opcode_size(info
->opcodes
[i
]))
2967 if (prolog_offset
< info
->opcodes
[i
].offset
) continue; /* skip it */
2969 switch (info
->opcodes
[i
].code
)
2971 case UWOP_PUSH_NONVOL
: /* pushq %reg */
2972 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(ULONG64
*)context
->Rsp
);
2973 context
->Rsp
+= sizeof(ULONG64
);
2975 case UWOP_ALLOC_LARGE
: /* subq $nn,%rsp */
2976 if (info
->opcodes
[i
].info
) context
->Rsp
+= *(DWORD
*)&info
->opcodes
[i
+1];
2977 else context
->Rsp
+= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
2979 case UWOP_ALLOC_SMALL
: /* subq $n,%rsp */
2980 context
->Rsp
+= (info
->opcodes
[i
].info
+ 1) * 8;
2982 case UWOP_SET_FPREG
: /* leaq nn(%rsp),%framereg */
2983 context
->Rsp
= *frame_ret
= frame
;
2985 case UWOP_SAVE_NONVOL
: /* movq %reg,n(%rsp) */
2986 off
= frame
+ *(USHORT
*)&info
->opcodes
[i
+1] * 8;
2987 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(ULONG64
*)off
);
2989 case UWOP_SAVE_NONVOL_FAR
: /* movq %reg,nn(%rsp) */
2990 off
= frame
+ *(DWORD
*)&info
->opcodes
[i
+1];
2991 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(ULONG64
*)off
);
2993 case UWOP_SAVE_XMM128
: /* movaps %xmmreg,n(%rsp) */
2994 off
= frame
+ *(USHORT
*)&info
->opcodes
[i
+1] * 16;
2995 set_float_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(M128A
*)off
);
2997 case UWOP_SAVE_XMM128_FAR
: /* movaps %xmmreg,nn(%rsp) */
2998 off
= frame
+ *(DWORD
*)&info
->opcodes
[i
+1];
2999 set_float_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(M128A
*)off
);
3001 case UWOP_PUSH_MACHFRAME
:
3002 FIXME( "PUSH_MACHFRAME %u\n", info
->opcodes
[i
].info
);
3005 FIXME( "unknown code %u\n", info
->opcodes
[i
].code
);
3010 if (!(info
->flags
& UNW_FLAG_CHAININFO
)) break;
3011 function
= &handler_data
->chain
; /* restart with the chained info */
3014 /* now pop return address */
3015 context
->Rip
= *(ULONG64
*)context
->Rsp
;
3016 context
->Rsp
+= sizeof(ULONG64
);
3018 if (!(info
->flags
& type
)) return NULL
; /* no matching handler */
3019 if (prolog_offset
!= ~0) return NULL
; /* inside prolog */
3021 *data
= &handler_data
->handler
+ 1;
3022 return (char *)base
+ handler_data
->handler
;
3026 /**********************************************************************
3027 * call_unwind_handler
3029 * Call a single unwind handler.
3030 * FIXME: Handle nested exceptions.
3032 static void call_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
)
3036 dispatch
->ControlPc
= dispatch
->ContextRecord
->Rip
;
3038 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
3039 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
3040 res
= dispatch
->LanguageHandler( rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
3041 TRACE( "handler %p returned %x\n", dispatch
->LanguageHandler
, res
);
3045 case ExceptionContinueSearch
:
3047 case ExceptionCollidedUnwind
:
3048 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
3051 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
3057 /**********************************************************************
3058 * call_teb_unwind_handler
3060 * Call a single unwind handler from the TEB chain.
3061 * FIXME: Handle nested exceptions.
3063 static void call_teb_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
,
3064 EXCEPTION_REGISTRATION_RECORD
*teb_frame
)
3066 EXCEPTION_REGISTRATION_RECORD
*dispatcher
;
3069 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
3070 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
3071 res
= teb_frame
->Handler( rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
3072 TRACE( "handler at %p returned %u\n", teb_frame
->Handler
, res
);
3076 case ExceptionContinueSearch
:
3078 case ExceptionCollidedUnwind
:
3079 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
3082 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
3088 /*******************************************************************
3089 * RtlUnwindEx (NTDLL.@)
3091 void WINAPI
RtlUnwindEx( PVOID end_frame
, PVOID target_ip
, EXCEPTION_RECORD
*rec
,
3092 PVOID retval
, CONTEXT
*context
, UNWIND_HISTORY_TABLE
*table
)
3094 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
3095 EXCEPTION_RECORD record
;
3096 DISPATCHER_CONTEXT dispatch
;
3097 CONTEXT new_context
;
3102 RtlCaptureContext( context
);
3103 new_context
= *context
;
3105 /* build an exception record, if we do not have one */
3108 record
.ExceptionCode
= STATUS_UNWIND
;
3109 record
.ExceptionFlags
= 0;
3110 record
.ExceptionRecord
= NULL
;
3111 record
.ExceptionAddress
= (void *)context
->Rip
;
3112 record
.NumberParameters
= 0;
3116 rec
->ExceptionFlags
|= EH_UNWINDING
| (end_frame
? 0 : EH_EXIT_UNWIND
);
3118 TRACE( "code=%x flags=%x end_frame=%p target_ip=%p rip=%016lx\n",
3119 rec
->ExceptionCode
, rec
->ExceptionFlags
, end_frame
, target_ip
, context
->Rip
);
3120 for (i
= 0; i
< min( EXCEPTION_MAXIMUM_PARAMETERS
, rec
->NumberParameters
); i
++)
3121 TRACE( " info[%d]=%016lx\n", i
, rec
->ExceptionInformation
[i
] );
3122 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
3123 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
3124 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
3125 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
3126 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
3127 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
3128 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
3129 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
3131 dispatch
.EstablisherFrame
= context
->Rsp
;
3132 dispatch
.TargetIp
= (ULONG64
)target_ip
;
3133 dispatch
.ContextRecord
= context
;
3134 dispatch
.HistoryTable
= table
;
3138 /* FIXME: should use the history table to make things faster */
3140 dispatch
.ImageBase
= 0;
3141 dispatch
.ScopeIndex
= 0; /* FIXME */
3143 /* first look for PE exception information */
3145 if ((dispatch
.FunctionEntry
= lookup_function_info( context
->Rip
, &dispatch
.ImageBase
, &module
)))
3147 dispatch
.LanguageHandler
= RtlVirtualUnwind( UNW_FLAG_UHANDLER
, dispatch
.ImageBase
,
3148 context
->Rip
, dispatch
.FunctionEntry
,
3149 &new_context
, &dispatch
.HandlerData
,
3150 &dispatch
.EstablisherFrame
, NULL
);
3154 /* then look for host system exception information */
3156 if (!module
|| (module
->Flags
& LDR_WINE_INTERNAL
))
3158 struct dwarf_eh_bases bases
;
3159 const struct dwarf_fde
*fde
= _Unwind_Find_FDE( (void *)(context
->Rip
- 1), &bases
);
3163 dispatch
.FunctionEntry
= NULL
;
3164 status
= dwarf_virtual_unwind( context
->Rip
, &dispatch
.EstablisherFrame
, &new_context
, fde
,
3165 &bases
, &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
3166 if (status
!= STATUS_SUCCESS
) raise_status( status
, rec
);
3167 if (dispatch
.LanguageHandler
&& !module
)
3169 FIXME( "calling personality routine in system library not supported yet\n" );
3170 dispatch
.LanguageHandler
= NULL
;
3175 else WARN( "exception data not found in %s\n", debugstr_w(module
->BaseDllName
.Buffer
) );
3177 /* no exception information, treat as a leaf function */
3179 new_context
.Rip
= *(ULONG64
*)context
->Rsp
;
3180 new_context
.Rsp
= context
->Rsp
+ sizeof(ULONG64
);
3181 dispatch
.EstablisherFrame
= new_context
.Rsp
;
3182 dispatch
.LanguageHandler
= NULL
;
3185 if (!dispatch
.EstablisherFrame
) break;
3187 if (is_inside_signal_stack( (void *)dispatch
.EstablisherFrame
))
3189 TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch
.EstablisherFrame
,
3190 get_signal_stack(), (char *)get_signal_stack() + signal_stack_size
);
3191 *context
= new_context
;
3195 if ((dispatch
.EstablisherFrame
& 7) ||
3196 dispatch
.EstablisherFrame
< (ULONG64
)NtCurrentTeb()->Tib
.StackLimit
||
3197 dispatch
.EstablisherFrame
> (ULONG64
)NtCurrentTeb()->Tib
.StackBase
)
3199 ERR( "invalid frame %lx (%p-%p)\n", dispatch
.EstablisherFrame
,
3200 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
3201 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
3205 if (dispatch
.LanguageHandler
)
3207 if (end_frame
&& (dispatch
.EstablisherFrame
> (ULONG64
)end_frame
))
3209 ERR( "invalid end frame %lx/%p\n", dispatch
.EstablisherFrame
, end_frame
);
3210 raise_status( STATUS_INVALID_UNWIND_TARGET
, rec
);
3212 if (dispatch
.EstablisherFrame
== (ULONG64
)end_frame
) rec
->ExceptionFlags
|= EH_TARGET_UNWIND
;
3213 call_unwind_handler( rec
, &dispatch
);
3215 else /* hack: call builtin handlers registered in the tib list */
3217 DWORD64 backup_frame
= dispatch
.EstablisherFrame
;
3218 while ((ULONG64
)teb_frame
< new_context
.Rsp
&& (ULONG64
)teb_frame
< (ULONG64
)end_frame
)
3220 TRACE( "found builtin frame %p handler %p\n", teb_frame
, teb_frame
->Handler
);
3221 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
3222 call_teb_unwind_handler( rec
, &dispatch
, teb_frame
);
3223 teb_frame
= __wine_pop_frame( teb_frame
);
3225 if ((ULONG64
)teb_frame
== (ULONG64
)end_frame
&& (ULONG64
)end_frame
< new_context
.Rsp
) break;
3226 dispatch
.EstablisherFrame
= backup_frame
;
3229 if (dispatch
.EstablisherFrame
== (ULONG64
)end_frame
) break;
3230 *context
= new_context
;
3233 if (rec
->ExceptionCode
== STATUS_LONGJUMP
&& rec
->NumberParameters
>= 1)
3235 struct MSVCRT_JUMP_BUFFER
*jmp
= (struct MSVCRT_JUMP_BUFFER
*)rec
->ExceptionInformation
[0];
3236 context
->Rbx
= jmp
->Rbx
;
3237 context
->Rsp
= jmp
->Rsp
;
3238 context
->Rbp
= jmp
->Rbp
;
3239 context
->Rsi
= jmp
->Rsi
;
3240 context
->Rdi
= jmp
->Rdi
;
3241 context
->R12
= jmp
->R12
;
3242 context
->R13
= jmp
->R13
;
3243 context
->R14
= jmp
->R14
;
3244 context
->R15
= jmp
->R15
;
3245 context
->Rip
= jmp
->Rip
;
3246 context
->u
.s
.Xmm6
= jmp
->Xmm6
;
3247 context
->u
.s
.Xmm7
= jmp
->Xmm7
;
3248 context
->u
.s
.Xmm8
= jmp
->Xmm8
;
3249 context
->u
.s
.Xmm9
= jmp
->Xmm9
;
3250 context
->u
.s
.Xmm10
= jmp
->Xmm10
;
3251 context
->u
.s
.Xmm11
= jmp
->Xmm11
;
3252 context
->u
.s
.Xmm12
= jmp
->Xmm12
;
3253 context
->u
.s
.Xmm13
= jmp
->Xmm13
;
3254 context
->u
.s
.Xmm14
= jmp
->Xmm14
;
3255 context
->u
.s
.Xmm15
= jmp
->Xmm15
;
3257 else if (rec
->ExceptionCode
== STATUS_UNWIND_CONSOLIDATE
&& rec
->NumberParameters
>= 1)
3259 PVOID (CALLBACK
*consolidate
)(EXCEPTION_RECORD
*) = (void *)rec
->ExceptionInformation
[0];
3260 TRACE( "calling consolidate callback %p\n", consolidate
);
3261 target_ip
= consolidate( rec
);
3263 context
->Rax
= (ULONG64
)retval
;
3264 context
->Rip
= (ULONG64
)target_ip
;
3265 TRACE( "returning to %lx stack %lx\n", context
->Rip
, context
->Rsp
);
3266 set_cpu_context( context
);
3270 /*******************************************************************
3271 * RtlUnwind (NTDLL.@)
3273 void WINAPI
RtlUnwind( void *frame
, void *target_ip
, EXCEPTION_RECORD
*rec
, void *retval
)
3276 RtlUnwindEx( frame
, target_ip
, rec
, retval
, &context
, NULL
);
3280 /*******************************************************************
3281 * _local_unwind (NTDLL.@)
3283 void WINAPI
_local_unwind( void *frame
, void *target_ip
)
3286 RtlUnwindEx( frame
, target_ip
, NULL
, NULL
, &context
, NULL
);
3290 /*******************************************************************
3291 * __C_specific_handler (NTDLL.@)
3293 EXCEPTION_DISPOSITION WINAPI
__C_specific_handler( EXCEPTION_RECORD
*rec
,
3296 struct _DISPATCHER_CONTEXT
*dispatch
)
3298 SCOPE_TABLE
*table
= dispatch
->HandlerData
;
3301 TRACE( "%p %lx %p %p\n", rec
, frame
, context
, dispatch
);
3302 if (TRACE_ON(seh
)) dump_scope_table( dispatch
->ImageBase
, table
);
3304 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
)) /* FIXME */
3305 return ExceptionContinueSearch
;
3307 for (i
= 0; i
< table
->Count
; i
++)
3309 if (context
->Rip
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
3310 context
->Rip
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
3312 if (!table
->ScopeRecord
[i
].JumpTarget
) continue;
3313 if (table
->ScopeRecord
[i
].HandlerAddress
!= EXCEPTION_EXECUTE_HANDLER
)
3315 EXCEPTION_POINTERS ptrs
;
3316 PC_LANGUAGE_EXCEPTION_HANDLER filter
;
3318 filter
= (PC_LANGUAGE_EXCEPTION_HANDLER
)(dispatch
->ImageBase
+ table
->ScopeRecord
[i
].HandlerAddress
);
3319 ptrs
.ExceptionRecord
= rec
;
3320 ptrs
.ContextRecord
= context
;
3321 TRACE( "calling filter %p ptrs %p frame %lx\n", filter
, &ptrs
, frame
);
3322 switch (filter( &ptrs
, frame
))
3324 case EXCEPTION_EXECUTE_HANDLER
:
3326 case EXCEPTION_CONTINUE_SEARCH
:
3328 case EXCEPTION_CONTINUE_EXECUTION
:
3329 return ExceptionContinueExecution
;
3332 TRACE( "unwinding to target %lx\n", dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
);
3333 RtlUnwindEx( (void *)frame
, (char *)dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
,
3334 rec
, 0, context
, dispatch
->HistoryTable
);
3337 return ExceptionContinueSearch
;
3341 /*******************************************************************
3342 * NtRaiseException (NTDLL.@)
3344 NTSTATUS WINAPI
NtRaiseException( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, BOOL first_chance
)
3346 NTSTATUS status
= raise_exception( rec
, context
, first_chance
);
3347 if (status
== STATUS_SUCCESS
) NtSetContextThread( GetCurrentThread(), context
);
3352 /***********************************************************************
3353 * RtlRaiseException (NTDLL.@)
3355 void WINAPI
__regs_RtlRaiseException( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
3359 rec
->ExceptionAddress
= (void *)context
->Rip
;
3360 status
= raise_exception( rec
, context
, TRUE
);
3361 if (status
!= STATUS_SUCCESS
) raise_status( status
, rec
);
3363 __ASM_GLOBAL_FUNC( RtlRaiseException
,
3364 "movq %rcx,8(%rsp)\n\t"
3365 "sub $0x4f8,%rsp\n\t"
3366 __ASM_CFI(".cfi_adjust_cfa_offset 0x4f8\n\t")
3367 "leaq 0x20(%rsp),%rcx\n\t"
3368 "call " __ASM_NAME("RtlCaptureContext") "\n\t"
3369 "leaq 0x20(%rsp),%rdx\n\t" /* context pointer */
3370 "movq 0x4f8(%rsp),%rax\n\t" /* return address */
3371 "movq %rax,0xf8(%rdx)\n\t" /* context->Rip */
3372 "leaq 0x500(%rsp),%rax\n\t" /* orig stack pointer */
3373 "movq %rax,0x98(%rdx)\n\t" /* context->Rsp */
3374 "movq (%rax),%rcx\n\t" /* original first parameter */
3375 "movq %rcx,0x80(%rdx)\n\t" /* context->Rcx */
3376 "call " __ASM_NAME("__regs_RtlRaiseException") "\n\t"
3377 "leaq 0x20(%rsp),%rdi\n\t" /* context pointer */
3378 "call " __ASM_NAME("set_cpu_context") /* does not return */ );
3381 /*************************************************************************
3382 * RtlCaptureStackBackTrace (NTDLL.@)
3384 USHORT WINAPI
RtlCaptureStackBackTrace( ULONG skip
, ULONG count
, PVOID
*buffer
, ULONG
*hash
)
3386 FIXME( "(%d, %d, %p, %p) stub!\n", skip
, count
, buffer
, hash
);
3391 /***********************************************************************
3394 void call_thread_func( LPTHREAD_START_ROUTINE entry
, void *arg
, void *frame
)
3396 ntdll_get_thread_data()->exit_frame
= frame
;
3399 RtlExitUserThread( entry( arg
));
3401 __EXCEPT(unhandled_exception_filter
)
3403 NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
3406 abort(); /* should not be reached */
3409 extern void DECLSPEC_NORETURN
call_thread_entry_point( LPTHREAD_START_ROUTINE entry
, void *arg
);
3410 __ASM_GLOBAL_FUNC( call_thread_entry_point
,
3412 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3413 "movq %rbp,48(%rsp)\n\t"
3414 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3415 "movq %rbx,40(%rsp)\n\t"
3416 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3417 "movq %r12,32(%rsp)\n\t"
3418 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3419 "movq %r13,24(%rsp)\n\t"
3420 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3421 "movq %r14,16(%rsp)\n\t"
3422 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3423 "movq %r15,8(%rsp)\n\t"
3424 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3425 "movq %rsp,%rdx\n\t"
3426 "call " __ASM_NAME("call_thread_func") );
3428 extern void DECLSPEC_NORETURN
call_thread_exit_func( int status
, void (*func
)(int), void *frame
);
3429 __ASM_GLOBAL_FUNC( call_thread_exit_func
,
3430 "movq %rdx,%rsp\n\t"
3431 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3432 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3433 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3434 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3435 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3436 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3437 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3440 /***********************************************************************
3441 * RtlExitUserThread (NTDLL.@)
3443 void WINAPI
RtlExitUserThread( ULONG status
)
3445 if (!ntdll_get_thread_data()->exit_frame
) exit_thread( status
);
3446 call_thread_exit_func( status
, exit_thread
, ntdll_get_thread_data()->exit_frame
);
3449 /***********************************************************************
3452 void abort_thread( int status
)
3454 if (!ntdll_get_thread_data()->exit_frame
) terminate_thread( status
);
3455 call_thread_exit_func( status
, terminate_thread
, ntdll_get_thread_data()->exit_frame
);
3458 /**********************************************************************
3459 * __wine_enter_vm86 (NTDLL.@)
3461 void __wine_enter_vm86( CONTEXT
*context
)
3463 MESSAGE("vm86 mode not supported on this platform\n");
3466 /**********************************************************************
3467 * DbgBreakPoint (NTDLL.@)
3469 __ASM_STDCALL_FUNC( DbgBreakPoint
, 0, "int $3; ret")
3471 /**********************************************************************
3472 * DbgUserBreakPoint (NTDLL.@)
3474 __ASM_STDCALL_FUNC( DbgUserBreakPoint
, 0, "int $3; ret")
3476 /**********************************************************************
3477 * NtCurrentTeb (NTDLL.@)
3479 * FIXME: This isn't exported from NTDLL on real NT. This should be
3480 * removed if and when we can set the GSBASE MSR on Mac OS X.
3483 TEB
* WINAPI
NtCurrentTeb(void)
3485 return pthread_getspecific( teb_key
);
3488 __ASM_STDCALL_FUNC( NtCurrentTeb
, 0, ".byte 0x65\n\tmovq 0x30,%rax\n\tret" )
3491 #endif /* __x86_64__ */