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))
240 #error You must define the signal context functions for your platform
245 TRAP_x86_UNKNOWN
= -1, /* Unknown fault (TRAP_sig not defined) */
246 TRAP_x86_DIVIDE
= 0, /* Division by zero exception */
247 TRAP_x86_TRCTRAP
= 1, /* Single-step exception */
248 TRAP_x86_NMI
= 2, /* NMI interrupt */
249 TRAP_x86_BPTFLT
= 3, /* Breakpoint exception */
250 TRAP_x86_OFLOW
= 4, /* Overflow exception */
251 TRAP_x86_BOUND
= 5, /* Bound range exception */
252 TRAP_x86_PRIVINFLT
= 6, /* Invalid opcode exception */
253 TRAP_x86_DNA
= 7, /* Device not available exception */
254 TRAP_x86_DOUBLEFLT
= 8, /* Double fault exception */
255 TRAP_x86_FPOPFLT
= 9, /* Coprocessor segment overrun */
256 TRAP_x86_TSSFLT
= 10, /* Invalid TSS exception */
257 TRAP_x86_SEGNPFLT
= 11, /* Segment not present exception */
258 TRAP_x86_STKFLT
= 12, /* Stack fault */
259 TRAP_x86_PROTFLT
= 13, /* General protection fault */
260 TRAP_x86_PAGEFLT
= 14, /* Page fault */
261 TRAP_x86_ARITHTRAP
= 16, /* Floating point exception */
262 TRAP_x86_ALIGNFLT
= 17, /* Alignment check exception */
263 TRAP_x86_MCHK
= 18, /* Machine check exception */
264 TRAP_x86_CACHEFLT
= 19 /* Cache flush exception */
267 static const size_t teb_size
= 0x2000; /* we reserve two pages for the TEB */
268 static size_t signal_stack_size
;
270 typedef void (*raise_func
)( EXCEPTION_RECORD
*rec
, CONTEXT
*context
);
271 typedef int (*wine_signal_handler
)(unsigned int sig
);
273 static wine_signal_handler handlers
[256];
275 /***********************************************************************
276 * Dynamic unwind table
279 struct dynamic_unwind_entry
283 /* memory region which matches this entry */
288 RUNTIME_FUNCTION
*table
;
291 /* user defined callback */
292 PGET_RUNTIME_FUNCTION_CALLBACK callback
;
296 static struct list dynamic_unwind_list
= LIST_INIT(dynamic_unwind_list
);
298 static RTL_CRITICAL_SECTION dynamic_unwind_section
;
299 static RTL_CRITICAL_SECTION_DEBUG dynamic_unwind_debug
=
301 0, 0, &dynamic_unwind_section
,
302 { &dynamic_unwind_debug
.ProcessLocksList
, &dynamic_unwind_debug
.ProcessLocksList
},
303 0, 0, { (DWORD_PTR
)(__FILE__
": dynamic_unwind_section") }
305 static RTL_CRITICAL_SECTION dynamic_unwind_section
= { &dynamic_unwind_debug
, -1, 0, 0, 0, 0 };
307 /***********************************************************************
308 * Definitions for Win32 unwind tables
313 RUNTIME_FUNCTION chain
;
331 BYTE frame_offset
: 4;
332 struct opcode opcodes
[1]; /* info->count entries */
333 /* followed by handler_data */
336 #define UWOP_PUSH_NONVOL 0
337 #define UWOP_ALLOC_LARGE 1
338 #define UWOP_ALLOC_SMALL 2
339 #define UWOP_SET_FPREG 3
340 #define UWOP_SAVE_NONVOL 4
341 #define UWOP_SAVE_NONVOL_FAR 5
342 #define UWOP_SAVE_XMM128 8
343 #define UWOP_SAVE_XMM128_FAR 9
344 #define UWOP_PUSH_MACHFRAME 10
346 static void dump_unwind_info( ULONG64 base
, RUNTIME_FUNCTION
*function
)
348 static const char * const reg_names
[16] =
349 { "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
350 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" };
352 union handler_data
*handler_data
;
353 struct UNWIND_INFO
*info
;
354 unsigned int i
, count
;
356 TRACE( "**** func %x-%x\n", function
->BeginAddress
, function
->EndAddress
);
359 if (function
->UnwindData
& 1)
361 RUNTIME_FUNCTION
*next
= (RUNTIME_FUNCTION
*)((char *)base
+ (function
->UnwindData
& ~1));
362 TRACE( "unwind info for function %p-%p chained to function %p-%p\n",
363 (char *)base
+ function
->BeginAddress
, (char *)base
+ function
->EndAddress
,
364 (char *)base
+ next
->BeginAddress
, (char *)base
+ next
->EndAddress
);
368 info
= (struct UNWIND_INFO
*)((char *)base
+ function
->UnwindData
);
370 TRACE( "unwind info at %p flags %x prolog 0x%x bytes function %p-%p\n",
371 info
, info
->flags
, info
->prolog
,
372 (char *)base
+ function
->BeginAddress
, (char *)base
+ function
->EndAddress
);
375 TRACE( " frame register %s offset 0x%x(%%rsp)\n",
376 reg_names
[info
->frame_reg
], info
->frame_offset
* 16 );
378 for (i
= 0; i
< info
->count
; i
++)
380 TRACE( " 0x%x: ", info
->opcodes
[i
].offset
);
381 switch (info
->opcodes
[i
].code
)
383 case UWOP_PUSH_NONVOL
:
384 TRACE( "pushq %%%s\n", reg_names
[info
->opcodes
[i
].info
] );
386 case UWOP_ALLOC_LARGE
:
387 if (info
->opcodes
[i
].info
)
389 count
= *(DWORD
*)&info
->opcodes
[i
+1];
394 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
397 TRACE( "subq $0x%x,%%rsp\n", count
);
399 case UWOP_ALLOC_SMALL
:
400 count
= (info
->opcodes
[i
].info
+ 1) * 8;
401 TRACE( "subq $0x%x,%%rsp\n", count
);
404 TRACE( "leaq 0x%x(%%rsp),%s\n",
405 info
->frame_offset
* 16, reg_names
[info
->frame_reg
] );
407 case UWOP_SAVE_NONVOL
:
408 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
409 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names
[info
->opcodes
[i
].info
], count
);
412 case UWOP_SAVE_NONVOL_FAR
:
413 count
= *(DWORD
*)&info
->opcodes
[i
+1];
414 TRACE( "movq %%%s,0x%x(%%rsp)\n", reg_names
[info
->opcodes
[i
].info
], count
);
417 case UWOP_SAVE_XMM128
:
418 count
= *(USHORT
*)&info
->opcodes
[i
+1] * 16;
419 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info
->opcodes
[i
].info
, count
);
422 case UWOP_SAVE_XMM128_FAR
:
423 count
= *(DWORD
*)&info
->opcodes
[i
+1];
424 TRACE( "movaps %%xmm%u,0x%x(%%rsp)\n", info
->opcodes
[i
].info
, count
);
427 case UWOP_PUSH_MACHFRAME
:
428 TRACE( "PUSH_MACHFRAME %u\n", info
->opcodes
[i
].info
);
431 FIXME( "unknown code %u\n", info
->opcodes
[i
].code
);
436 handler_data
= (union handler_data
*)&info
->opcodes
[(info
->count
+ 1) & ~1];
437 if (info
->flags
& UNW_FLAG_CHAININFO
)
439 TRACE( " chained to function %p-%p\n",
440 (char *)base
+ handler_data
->chain
.BeginAddress
,
441 (char *)base
+ handler_data
->chain
.EndAddress
);
442 function
= &handler_data
->chain
;
445 if (info
->flags
& (UNW_FLAG_EHANDLER
| UNW_FLAG_UHANDLER
))
446 TRACE( " handler %p data at %p\n",
447 (char *)base
+ handler_data
->handler
, &handler_data
->handler
+ 1 );
452 static void dump_scope_table( ULONG64 base
, const SCOPE_TABLE
*table
)
456 TRACE( "scope table at %p\n", table
);
457 for (i
= 0; i
< table
->Count
; i
++)
458 TRACE( " %u: %lx-%lx handler %lx target %lx\n", i
,
459 base
+ table
->ScopeRecord
[i
].BeginAddress
,
460 base
+ table
->ScopeRecord
[i
].EndAddress
,
461 base
+ table
->ScopeRecord
[i
].HandlerAddress
,
462 base
+ table
->ScopeRecord
[i
].JumpTarget
);
466 /***********************************************************************
467 * Definitions for Dwarf unwind tables
470 enum dwarf_call_frame_info
472 DW_CFA_advance_loc
= 0x40,
473 DW_CFA_offset
= 0x80,
474 DW_CFA_restore
= 0xc0,
476 DW_CFA_set_loc
= 0x01,
477 DW_CFA_advance_loc1
= 0x02,
478 DW_CFA_advance_loc2
= 0x03,
479 DW_CFA_advance_loc4
= 0x04,
480 DW_CFA_offset_extended
= 0x05,
481 DW_CFA_restore_extended
= 0x06,
482 DW_CFA_undefined
= 0x07,
483 DW_CFA_same_value
= 0x08,
484 DW_CFA_register
= 0x09,
485 DW_CFA_remember_state
= 0x0a,
486 DW_CFA_restore_state
= 0x0b,
487 DW_CFA_def_cfa
= 0x0c,
488 DW_CFA_def_cfa_register
= 0x0d,
489 DW_CFA_def_cfa_offset
= 0x0e,
490 DW_CFA_def_cfa_expression
= 0x0f,
491 DW_CFA_expression
= 0x10,
492 DW_CFA_offset_extended_sf
= 0x11,
493 DW_CFA_def_cfa_sf
= 0x12,
494 DW_CFA_def_cfa_offset_sf
= 0x13,
495 DW_CFA_val_offset
= 0x14,
496 DW_CFA_val_offset_sf
= 0x15,
497 DW_CFA_val_expression
= 0x16,
504 DW_OP_const1u
= 0x08,
505 DW_OP_const1s
= 0x09,
506 DW_OP_const2u
= 0x0a,
507 DW_OP_const2s
= 0x0b,
508 DW_OP_const4u
= 0x0c,
509 DW_OP_const4s
= 0x0d,
510 DW_OP_const8u
= 0x0e,
511 DW_OP_const8s
= 0x0f,
531 DW_OP_plus_uconst
= 0x23,
644 DW_OP_deref_size
= 0x94,
645 DW_OP_xderef_size
= 0x95,
647 DW_OP_push_object_address
= 0x97,
650 DW_OP_call_ref
= 0x9a,
651 DW_OP_form_tls_address
= 0x9b,
652 DW_OP_call_frame_cfa
= 0x9c,
653 DW_OP_bit_piece
= 0x9d,
654 DW_OP_lo_user
= 0xe0,
655 DW_OP_hi_user
= 0xff,
656 DW_OP_GNU_push_tls_address
= 0xe0,
657 DW_OP_GNU_uninit
= 0xf0,
658 DW_OP_GNU_encoded_addr
= 0xf1,
661 #define DW_EH_PE_native 0x00
662 #define DW_EH_PE_leb128 0x01
663 #define DW_EH_PE_data2 0x02
664 #define DW_EH_PE_data4 0x03
665 #define DW_EH_PE_data8 0x04
666 #define DW_EH_PE_signed 0x08
667 #define DW_EH_PE_abs 0x00
668 #define DW_EH_PE_pcrel 0x10
669 #define DW_EH_PE_textrel 0x20
670 #define DW_EH_PE_datarel 0x30
671 #define DW_EH_PE_funcrel 0x40
672 #define DW_EH_PE_aligned 0x50
673 #define DW_EH_PE_indirect 0x80
674 #define DW_EH_PE_omit 0xff
676 struct dwarf_eh_bases
687 unsigned char version
;
688 unsigned char augmentation
[1];
694 unsigned int cie_offset
;
697 extern const struct dwarf_fde
*_Unwind_Find_FDE (void *, struct dwarf_eh_bases
*);
699 static unsigned char dwarf_get_u1( const unsigned char **p
)
704 static unsigned short dwarf_get_u2( const unsigned char **p
)
706 unsigned int ret
= (*p
)[0] | ((*p
)[1] << 8);
711 static unsigned int dwarf_get_u4( const unsigned char **p
)
713 unsigned int ret
= (*p
)[0] | ((*p
)[1] << 8) | ((*p
)[2] << 16) | ((*p
)[3] << 24);
718 static ULONG64
dwarf_get_u8( const unsigned char **p
)
720 ULONG64 low
= dwarf_get_u4( p
);
721 ULONG64 high
= dwarf_get_u4( p
);
722 return low
| (high
<< 32);
725 static ULONG_PTR
dwarf_get_uleb128( const unsigned char **p
)
728 unsigned int shift
= 0;
734 ret
|= (ULONG_PTR
)(byte
& 0x7f) << shift
;
737 } while (byte
& 0x80);
741 static LONG_PTR
dwarf_get_sleb128( const unsigned char **p
)
744 unsigned int shift
= 0;
750 ret
|= (ULONG_PTR
)(byte
& 0x7f) << shift
;
753 } while (byte
& 0x80);
755 if ((shift
< 8 * sizeof(ret
)) && (byte
& 0x40)) ret
|= -((ULONG_PTR
)1 << shift
);
759 static ULONG_PTR
dwarf_get_ptr( const unsigned char **p
, unsigned char encoding
)
763 if (encoding
== DW_EH_PE_omit
) return 0;
765 switch (encoding
& 0xf0)
771 base
= (ULONG_PTR
)*p
;
774 FIXME( "unsupported encoding %02x\n", encoding
);
778 switch (encoding
& 0x0f)
780 case DW_EH_PE_native
:
781 return base
+ dwarf_get_u8( p
);
782 case DW_EH_PE_leb128
:
783 return base
+ dwarf_get_uleb128( p
);
785 return base
+ dwarf_get_u2( p
);
787 return base
+ dwarf_get_u4( p
);
789 return base
+ dwarf_get_u8( p
);
790 case DW_EH_PE_signed
|DW_EH_PE_leb128
:
791 return base
+ dwarf_get_sleb128( p
);
792 case DW_EH_PE_signed
|DW_EH_PE_data2
:
793 return base
+ (signed short)dwarf_get_u2( p
);
794 case DW_EH_PE_signed
|DW_EH_PE_data4
:
795 return base
+ (signed int)dwarf_get_u4( p
);
796 case DW_EH_PE_signed
|DW_EH_PE_data8
:
797 return base
+ (LONG64
)dwarf_get_u8( p
);
799 FIXME( "unsupported encoding %02x\n", encoding
);
806 RULE_UNSET
, /* not set at all */
807 RULE_UNDEFINED
, /* undefined value */
808 RULE_SAME
, /* same value as previous frame */
809 RULE_CFA_OFFSET
, /* stored at cfa offset */
810 RULE_OTHER_REG
, /* stored in other register */
811 RULE_EXPRESSION
, /* address specified by expression */
812 RULE_VAL_EXPRESSION
/* value specified by expression */
815 #define NB_FRAME_REGS 41
816 #define MAX_SAVED_STATES 16
820 ULONG_PTR cfa_offset
;
821 unsigned char cfa_reg
;
822 enum reg_rule cfa_rule
;
823 enum reg_rule rules
[NB_FRAME_REGS
];
824 ULONG64 regs
[NB_FRAME_REGS
];
830 ULONG_PTR code_align
;
832 unsigned char retaddr_reg
;
833 unsigned char fde_encoding
;
834 unsigned char signal_frame
;
835 unsigned char state_sp
;
836 struct frame_state state
;
837 struct frame_state
*state_stack
;
840 static const char *dwarf_reg_names
[NB_FRAME_REGS
] =
842 /* 0-7 */ "%rax", "%rdx", "%rcx", "%rbx", "%rsi", "%rdi", "%rbp", "%rsp",
843 /* 8-16 */ "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rip",
844 /* 17-24 */ "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",
845 /* 25-32 */ "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15",
846 /* 33-40 */ "%st0", "%st1", "%st2", "%st3", "%st4", "%st5", "%st6", "%st7"
849 static BOOL
valid_reg( ULONG_PTR reg
)
851 if (reg
>= NB_FRAME_REGS
) FIXME( "unsupported reg %lx\n", reg
);
852 return (reg
< NB_FRAME_REGS
);
855 static void execute_cfa_instructions( const unsigned char *ptr
, const unsigned char *end
,
856 ULONG_PTR last_ip
, struct frame_info
*info
)
858 while (ptr
< end
&& info
->ip
< last_ip
+ info
->signal_frame
)
860 enum dwarf_call_frame_info op
= *ptr
++;
866 case DW_CFA_advance_loc
:
868 ULONG_PTR offset
= (op
& 0x3f) * info
->code_align
;
869 TRACE( "%lx: DW_CFA_advance_loc %lu\n", info
->ip
, offset
);
875 ULONG_PTR reg
= op
& 0x3f;
876 LONG_PTR offset
= dwarf_get_uleb128( &ptr
) * info
->data_align
;
877 if (!valid_reg( reg
)) break;
878 TRACE( "%lx: DW_CFA_offset %s, %ld\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
879 info
->state
.regs
[reg
] = offset
;
880 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
885 ULONG_PTR reg
= op
& 0x3f;
886 if (!valid_reg( reg
)) break;
887 TRACE( "%lx: DW_CFA_restore %s\n", info
->ip
, dwarf_reg_names
[reg
] );
888 info
->state
.rules
[reg
] = RULE_UNSET
;
899 ULONG_PTR loc
= dwarf_get_ptr( &ptr
, info
->fde_encoding
);
900 TRACE( "%lx: DW_CFA_set_loc %lx\n", info
->ip
, loc
);
904 case DW_CFA_advance_loc1
:
906 ULONG_PTR offset
= *ptr
++ * info
->code_align
;
907 TRACE( "%lx: DW_CFA_advance_loc1 %lu\n", info
->ip
, offset
);
911 case DW_CFA_advance_loc2
:
913 ULONG_PTR offset
= dwarf_get_u2( &ptr
) * info
->code_align
;
914 TRACE( "%lx: DW_CFA_advance_loc2 %lu\n", info
->ip
, offset
);
918 case DW_CFA_advance_loc4
:
920 ULONG_PTR offset
= dwarf_get_u4( &ptr
) * info
->code_align
;
921 TRACE( "%lx: DW_CFA_advance_loc4 %lu\n", info
->ip
, offset
);
925 case DW_CFA_offset_extended
:
926 case DW_CFA_offset_extended_sf
:
928 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
929 LONG_PTR offset
= (op
== DW_CFA_offset_extended
) ? dwarf_get_uleb128( &ptr
) * info
->data_align
930 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
931 if (!valid_reg( reg
)) break;
932 TRACE( "%lx: DW_CFA_offset_extended %s, %ld\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
933 info
->state
.regs
[reg
] = offset
;
934 info
->state
.rules
[reg
] = RULE_CFA_OFFSET
;
937 case DW_CFA_restore_extended
:
939 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
940 if (!valid_reg( reg
)) break;
941 TRACE( "%lx: DW_CFA_restore_extended %s\n", info
->ip
, dwarf_reg_names
[reg
] );
942 info
->state
.rules
[reg
] = RULE_UNSET
;
945 case DW_CFA_undefined
:
947 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
948 if (!valid_reg( reg
)) break;
949 TRACE( "%lx: DW_CFA_undefined %s\n", info
->ip
, dwarf_reg_names
[reg
] );
950 info
->state
.rules
[reg
] = RULE_UNDEFINED
;
953 case DW_CFA_same_value
:
955 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
956 if (!valid_reg( reg
)) break;
957 TRACE( "%lx: DW_CFA_same_value %s\n", info
->ip
, dwarf_reg_names
[reg
] );
958 info
->state
.regs
[reg
] = reg
;
959 info
->state
.rules
[reg
] = RULE_SAME
;
962 case DW_CFA_register
:
964 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
965 ULONG_PTR reg2
= dwarf_get_uleb128( &ptr
);
966 if (!valid_reg( reg
) || !valid_reg( reg2
)) break;
967 TRACE( "%lx: DW_CFA_register %s == %s\n", info
->ip
, dwarf_reg_names
[reg
], dwarf_reg_names
[reg2
] );
968 info
->state
.regs
[reg
] = reg2
;
969 info
->state
.rules
[reg
] = RULE_OTHER_REG
;
972 case DW_CFA_remember_state
:
973 TRACE( "%lx: DW_CFA_remember_state\n", info
->ip
);
974 if (info
->state_sp
>= MAX_SAVED_STATES
)
975 FIXME( "%lx: DW_CFA_remember_state too many nested saves\n", info
->ip
);
977 info
->state_stack
[info
->state_sp
++] = info
->state
;
979 case DW_CFA_restore_state
:
980 TRACE( "%lx: DW_CFA_restore_state\n", info
->ip
);
982 FIXME( "%lx: DW_CFA_restore_state without corresponding save\n", info
->ip
);
984 info
->state
= info
->state_stack
[--info
->state_sp
];
987 case DW_CFA_def_cfa_sf
:
989 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
990 ULONG_PTR offset
= (op
== DW_CFA_def_cfa
) ? dwarf_get_uleb128( &ptr
)
991 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
992 if (!valid_reg( reg
)) break;
993 TRACE( "%lx: DW_CFA_def_cfa %s, %lu\n", info
->ip
, dwarf_reg_names
[reg
], offset
);
994 info
->state
.cfa_reg
= reg
;
995 info
->state
.cfa_offset
= offset
;
996 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
999 case DW_CFA_def_cfa_register
:
1001 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1002 if (!valid_reg( reg
)) break;
1003 TRACE( "%lx: DW_CFA_def_cfa_register %s\n", info
->ip
, dwarf_reg_names
[reg
] );
1004 info
->state
.cfa_reg
= reg
;
1005 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1008 case DW_CFA_def_cfa_offset
:
1009 case DW_CFA_def_cfa_offset_sf
:
1011 ULONG_PTR offset
= (op
== DW_CFA_def_cfa_offset
) ? dwarf_get_uleb128( &ptr
)
1012 : dwarf_get_sleb128( &ptr
) * info
->data_align
;
1013 TRACE( "%lx: DW_CFA_def_cfa_offset %lu\n", info
->ip
, offset
);
1014 info
->state
.cfa_offset
= offset
;
1015 info
->state
.cfa_rule
= RULE_CFA_OFFSET
;
1018 case DW_CFA_def_cfa_expression
:
1020 ULONG_PTR expr
= (ULONG_PTR
)ptr
;
1021 ULONG_PTR len
= dwarf_get_uleb128( &ptr
);
1022 TRACE( "%lx: DW_CFA_def_cfa_expression %lx-%lx\n", info
->ip
, expr
, expr
+len
);
1023 info
->state
.cfa_offset
= expr
;
1024 info
->state
.cfa_rule
= RULE_VAL_EXPRESSION
;
1028 case DW_CFA_expression
:
1029 case DW_CFA_val_expression
:
1031 ULONG_PTR reg
= dwarf_get_uleb128( &ptr
);
1032 ULONG_PTR expr
= (ULONG_PTR
)ptr
;
1033 ULONG_PTR len
= dwarf_get_uleb128( &ptr
);
1034 if (!valid_reg( reg
)) break;
1035 TRACE( "%lx: DW_CFA_%sexpression %s %lx-%lx\n",
1036 info
->ip
, (op
== DW_CFA_expression
) ? "" : "val_", dwarf_reg_names
[reg
], expr
, expr
+len
);
1037 info
->state
.regs
[reg
] = expr
;
1038 info
->state
.rules
[reg
] = (op
== DW_CFA_expression
) ? RULE_EXPRESSION
: RULE_VAL_EXPRESSION
;
1043 FIXME( "%lx: unknown CFA opcode %02x\n", info
->ip
, op
);
1049 /* retrieve a context register from its dwarf number */
1050 static void *get_context_reg( CONTEXT
*context
, ULONG_PTR dw_reg
)
1054 case 0: return &context
->Rax
;
1055 case 1: return &context
->Rdx
;
1056 case 2: return &context
->Rcx
;
1057 case 3: return &context
->Rbx
;
1058 case 4: return &context
->Rsi
;
1059 case 5: return &context
->Rdi
;
1060 case 6: return &context
->Rbp
;
1061 case 7: return &context
->Rsp
;
1062 case 8: return &context
->R8
;
1063 case 9: return &context
->R9
;
1064 case 10: return &context
->R10
;
1065 case 11: return &context
->R11
;
1066 case 12: return &context
->R12
;
1067 case 13: return &context
->R13
;
1068 case 14: return &context
->R14
;
1069 case 15: return &context
->R15
;
1070 case 16: return &context
->Rip
;
1071 case 17: return &context
->u
.s
.Xmm0
;
1072 case 18: return &context
->u
.s
.Xmm1
;
1073 case 19: return &context
->u
.s
.Xmm2
;
1074 case 20: return &context
->u
.s
.Xmm3
;
1075 case 21: return &context
->u
.s
.Xmm4
;
1076 case 22: return &context
->u
.s
.Xmm5
;
1077 case 23: return &context
->u
.s
.Xmm6
;
1078 case 24: return &context
->u
.s
.Xmm7
;
1079 case 25: return &context
->u
.s
.Xmm8
;
1080 case 26: return &context
->u
.s
.Xmm9
;
1081 case 27: return &context
->u
.s
.Xmm10
;
1082 case 28: return &context
->u
.s
.Xmm11
;
1083 case 29: return &context
->u
.s
.Xmm12
;
1084 case 30: return &context
->u
.s
.Xmm13
;
1085 case 31: return &context
->u
.s
.Xmm14
;
1086 case 32: return &context
->u
.s
.Xmm15
;
1087 case 33: return &context
->u
.s
.Legacy
[0];
1088 case 34: return &context
->u
.s
.Legacy
[1];
1089 case 35: return &context
->u
.s
.Legacy
[2];
1090 case 36: return &context
->u
.s
.Legacy
[3];
1091 case 37: return &context
->u
.s
.Legacy
[4];
1092 case 38: return &context
->u
.s
.Legacy
[5];
1093 case 39: return &context
->u
.s
.Legacy
[6];
1094 case 40: return &context
->u
.s
.Legacy
[7];
1095 default: return NULL
;
1099 /* set a context register from its dwarf number */
1100 static void set_context_reg( CONTEXT
*context
, ULONG_PTR dw_reg
, void *val
)
1104 case 0: context
->Rax
= *(ULONG64
*)val
; break;
1105 case 1: context
->Rdx
= *(ULONG64
*)val
; break;
1106 case 2: context
->Rcx
= *(ULONG64
*)val
; break;
1107 case 3: context
->Rbx
= *(ULONG64
*)val
; break;
1108 case 4: context
->Rsi
= *(ULONG64
*)val
; break;
1109 case 5: context
->Rdi
= *(ULONG64
*)val
; break;
1110 case 6: context
->Rbp
= *(ULONG64
*)val
; break;
1111 case 7: context
->Rsp
= *(ULONG64
*)val
; break;
1112 case 8: context
->R8
= *(ULONG64
*)val
; break;
1113 case 9: context
->R9
= *(ULONG64
*)val
; break;
1114 case 10: context
->R10
= *(ULONG64
*)val
; break;
1115 case 11: context
->R11
= *(ULONG64
*)val
; break;
1116 case 12: context
->R12
= *(ULONG64
*)val
; break;
1117 case 13: context
->R13
= *(ULONG64
*)val
; break;
1118 case 14: context
->R14
= *(ULONG64
*)val
; break;
1119 case 15: context
->R15
= *(ULONG64
*)val
; break;
1120 case 16: context
->Rip
= *(ULONG64
*)val
; break;
1121 case 17: context
->u
.s
.Xmm0
= *(M128A
*)val
; break;
1122 case 18: context
->u
.s
.Xmm1
= *(M128A
*)val
; break;
1123 case 19: context
->u
.s
.Xmm2
= *(M128A
*)val
; break;
1124 case 20: context
->u
.s
.Xmm3
= *(M128A
*)val
; break;
1125 case 21: context
->u
.s
.Xmm4
= *(M128A
*)val
; break;
1126 case 22: context
->u
.s
.Xmm5
= *(M128A
*)val
; break;
1127 case 23: context
->u
.s
.Xmm6
= *(M128A
*)val
; break;
1128 case 24: context
->u
.s
.Xmm7
= *(M128A
*)val
; break;
1129 case 25: context
->u
.s
.Xmm8
= *(M128A
*)val
; break;
1130 case 26: context
->u
.s
.Xmm9
= *(M128A
*)val
; break;
1131 case 27: context
->u
.s
.Xmm10
= *(M128A
*)val
; break;
1132 case 28: context
->u
.s
.Xmm11
= *(M128A
*)val
; break;
1133 case 29: context
->u
.s
.Xmm12
= *(M128A
*)val
; break;
1134 case 30: context
->u
.s
.Xmm13
= *(M128A
*)val
; break;
1135 case 31: context
->u
.s
.Xmm14
= *(M128A
*)val
; break;
1136 case 32: context
->u
.s
.Xmm15
= *(M128A
*)val
; break;
1137 case 33: context
->u
.s
.Legacy
[0] = *(M128A
*)val
; break;
1138 case 34: context
->u
.s
.Legacy
[1] = *(M128A
*)val
; break;
1139 case 35: context
->u
.s
.Legacy
[2] = *(M128A
*)val
; break;
1140 case 36: context
->u
.s
.Legacy
[3] = *(M128A
*)val
; break;
1141 case 37: context
->u
.s
.Legacy
[4] = *(M128A
*)val
; break;
1142 case 38: context
->u
.s
.Legacy
[5] = *(M128A
*)val
; break;
1143 case 39: context
->u
.s
.Legacy
[6] = *(M128A
*)val
; break;
1144 case 40: context
->u
.s
.Legacy
[7] = *(M128A
*)val
; break;
1148 static ULONG_PTR
eval_expression( const unsigned char *p
, CONTEXT
*context
)
1150 ULONG_PTR reg
, tmp
, stack
[64];
1152 ULONG_PTR len
= dwarf_get_uleb128(&p
);
1153 const unsigned char *end
= p
+ len
;
1157 unsigned char opcode
= dwarf_get_u1(&p
);
1159 if (opcode
>= DW_OP_lit0
&& opcode
<= DW_OP_lit31
)
1160 stack
[++sp
] = opcode
- DW_OP_lit0
;
1161 else if (opcode
>= DW_OP_reg0
&& opcode
<= DW_OP_reg31
)
1162 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, opcode
- DW_OP_reg0
);
1163 else if (opcode
>= DW_OP_breg0
&& opcode
<= DW_OP_breg31
)
1164 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, opcode
- DW_OP_breg0
) + dwarf_get_sleb128(&p
);
1165 else switch (opcode
)
1167 case DW_OP_nop
: break;
1168 case DW_OP_addr
: stack
[++sp
] = dwarf_get_u8(&p
); break;
1169 case DW_OP_const1u
: stack
[++sp
] = dwarf_get_u1(&p
); break;
1170 case DW_OP_const1s
: stack
[++sp
] = (signed char)dwarf_get_u1(&p
); break;
1171 case DW_OP_const2u
: stack
[++sp
] = dwarf_get_u2(&p
); break;
1172 case DW_OP_const2s
: stack
[++sp
] = (short)dwarf_get_u2(&p
); break;
1173 case DW_OP_const4u
: stack
[++sp
] = dwarf_get_u4(&p
); break;
1174 case DW_OP_const4s
: stack
[++sp
] = (signed int)dwarf_get_u4(&p
); break;
1175 case DW_OP_const8u
: stack
[++sp
] = dwarf_get_u8(&p
); break;
1176 case DW_OP_const8s
: stack
[++sp
] = (LONG_PTR
)dwarf_get_u8(&p
); break;
1177 case DW_OP_constu
: stack
[++sp
] = dwarf_get_uleb128(&p
); break;
1178 case DW_OP_consts
: stack
[++sp
] = dwarf_get_sleb128(&p
); break;
1179 case DW_OP_deref
: stack
[sp
] = *(ULONG_PTR
*)stack
[sp
]; break;
1180 case DW_OP_dup
: stack
[sp
+ 1] = stack
[sp
]; sp
++; break;
1181 case DW_OP_drop
: sp
--; break;
1182 case DW_OP_over
: stack
[sp
+ 1] = stack
[sp
- 1]; sp
++; break;
1183 case DW_OP_pick
: stack
[sp
+ 1] = stack
[sp
- dwarf_get_u1(&p
)]; sp
++; break;
1184 case DW_OP_swap
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = tmp
; break;
1185 case DW_OP_rot
: tmp
= stack
[sp
]; stack
[sp
] = stack
[sp
-1]; stack
[sp
-1] = stack
[sp
-2]; stack
[sp
-2] = tmp
; break;
1186 case DW_OP_abs
: stack
[sp
] = labs(stack
[sp
]); break;
1187 case DW_OP_neg
: stack
[sp
] = -stack
[sp
]; break;
1188 case DW_OP_not
: stack
[sp
] = ~stack
[sp
]; break;
1189 case DW_OP_and
: stack
[sp
-1] &= stack
[sp
]; sp
--; break;
1190 case DW_OP_or
: stack
[sp
-1] |= stack
[sp
]; sp
--; break;
1191 case DW_OP_minus
: stack
[sp
-1] -= stack
[sp
]; sp
--; break;
1192 case DW_OP_mul
: stack
[sp
-1] *= stack
[sp
]; sp
--; break;
1193 case DW_OP_plus
: stack
[sp
-1] += stack
[sp
]; sp
--; break;
1194 case DW_OP_xor
: stack
[sp
-1] ^= stack
[sp
]; sp
--; break;
1195 case DW_OP_shl
: stack
[sp
-1] <<= stack
[sp
]; sp
--; break;
1196 case DW_OP_shr
: stack
[sp
-1] >>= stack
[sp
]; sp
--; break;
1197 case DW_OP_plus_uconst
: stack
[sp
] += dwarf_get_uleb128(&p
); break;
1198 case DW_OP_shra
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (1 << stack
[sp
]); sp
--; break;
1199 case DW_OP_div
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] / (LONG_PTR
)stack
[sp
]; sp
--; break;
1200 case DW_OP_mod
: stack
[sp
-1] = (LONG_PTR
)stack
[sp
-1] % (LONG_PTR
)stack
[sp
]; sp
--; break;
1201 case DW_OP_ge
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] >= (LONG_PTR
)stack
[sp
]); sp
--; break;
1202 case DW_OP_gt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] > (LONG_PTR
)stack
[sp
]); sp
--; break;
1203 case DW_OP_le
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] <= (LONG_PTR
)stack
[sp
]); sp
--; break;
1204 case DW_OP_lt
: stack
[sp
-1] = ((LONG_PTR
)stack
[sp
-1] < (LONG_PTR
)stack
[sp
]); sp
--; break;
1205 case DW_OP_eq
: stack
[sp
-1] = (stack
[sp
-1] == stack
[sp
]); sp
--; break;
1206 case DW_OP_ne
: stack
[sp
-1] = (stack
[sp
-1] != stack
[sp
]); sp
--; break;
1207 case DW_OP_skip
: tmp
= (short)dwarf_get_u2(&p
); p
+= tmp
; break;
1208 case DW_OP_bra
: tmp
= (short)dwarf_get_u2(&p
); if (!stack
[sp
--]) p
+= tmp
; break;
1209 case DW_OP_GNU_encoded_addr
: tmp
= *p
++; stack
[++sp
] = dwarf_get_ptr( &p
, tmp
); break;
1210 case DW_OP_regx
: stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, dwarf_get_uleb128(&p
) ); break;
1212 reg
= dwarf_get_uleb128(&p
);
1213 tmp
= dwarf_get_sleb128(&p
);
1214 stack
[++sp
] = *(ULONG_PTR
*)get_context_reg( context
, reg
) + tmp
;
1216 case DW_OP_deref_size
:
1219 case 1: stack
[sp
] = *(unsigned char *)stack
[sp
]; break;
1220 case 2: stack
[sp
] = *(unsigned short *)stack
[sp
]; break;
1221 case 4: stack
[sp
] = *(unsigned int *)stack
[sp
]; break;
1222 case 8: stack
[sp
] = *(ULONG_PTR
*)stack
[sp
]; break;
1226 FIXME( "unhandled opcode %02x\n", opcode
);
1232 /* apply the computed frame info to the actual context */
1233 static void apply_frame_state( CONTEXT
*context
, struct frame_state
*state
)
1236 ULONG_PTR cfa
, value
;
1237 CONTEXT new_context
= *context
;
1239 switch (state
->cfa_rule
)
1241 case RULE_EXPRESSION
:
1242 cfa
= *(ULONG_PTR
*)eval_expression( (const unsigned char *)state
->cfa_offset
, context
);
1244 case RULE_VAL_EXPRESSION
:
1245 cfa
= eval_expression( (const unsigned char *)state
->cfa_offset
, context
);
1248 cfa
= *(ULONG_PTR
*)get_context_reg( context
, state
->cfa_reg
) + state
->cfa_offset
;
1253 for (i
= 0; i
< NB_FRAME_REGS
; i
++)
1255 switch (state
->rules
[i
])
1258 case RULE_UNDEFINED
:
1261 case RULE_CFA_OFFSET
:
1262 set_context_reg( &new_context
, i
, (char *)cfa
+ state
->regs
[i
] );
1264 case RULE_OTHER_REG
:
1265 set_context_reg( &new_context
, i
, get_context_reg( context
, state
->regs
[i
] ));
1267 case RULE_EXPRESSION
:
1268 value
= eval_expression( (const unsigned char *)state
->regs
[i
], context
);
1269 set_context_reg( &new_context
, i
, (void *)value
);
1271 case RULE_VAL_EXPRESSION
:
1272 value
= eval_expression( (const unsigned char *)state
->regs
[i
], context
);
1273 set_context_reg( &new_context
, i
, &value
);
1277 new_context
.Rsp
= cfa
;
1278 *context
= new_context
;
1282 /***********************************************************************
1283 * dwarf_virtual_unwind
1285 * Equivalent of RtlVirtualUnwind for builtin modules.
1287 static NTSTATUS
dwarf_virtual_unwind( ULONG64 ip
, ULONG64
*frame
,CONTEXT
*context
,
1288 const struct dwarf_fde
*fde
, const struct dwarf_eh_bases
*bases
,
1289 PEXCEPTION_ROUTINE
*handler
, void **handler_data
)
1291 const struct dwarf_cie
*cie
;
1292 const unsigned char *ptr
, *augmentation
, *end
;
1293 ULONG_PTR len
, code_end
;
1294 struct frame_info info
;
1295 struct frame_state state_stack
[MAX_SAVED_STATES
];
1296 int aug_z_format
= 0;
1297 unsigned char lsda_encoding
= DW_EH_PE_omit
;
1299 memset( &info
, 0, sizeof(info
) );
1300 info
.state_stack
= state_stack
;
1301 info
.ip
= (ULONG_PTR
)bases
->func
;
1304 cie
= (const struct dwarf_cie
*)((const char *)&fde
->cie_offset
- fde
->cie_offset
);
1306 /* parse the CIE first */
1308 if (cie
->version
!= 1)
1310 FIXME( "unknown CIE version %u at %p\n", cie
->version
, cie
);
1311 return STATUS_INVALID_DISPOSITION
;
1313 ptr
= cie
->augmentation
+ strlen((const char *)cie
->augmentation
) + 1;
1315 info
.code_align
= dwarf_get_uleb128( &ptr
);
1316 info
.data_align
= dwarf_get_sleb128( &ptr
);
1317 info
.retaddr_reg
= *ptr
++;
1318 info
.state
.cfa_rule
= RULE_CFA_OFFSET
;
1320 TRACE( "function %lx base %p cie %p len %x id %x version %x aug '%s' code_align %lu data_align %ld retaddr %s\n",
1321 ip
, bases
->func
, cie
, cie
->length
, cie
->id
, cie
->version
, cie
->augmentation
,
1322 info
.code_align
, info
.data_align
, dwarf_reg_names
[info
.retaddr_reg
] );
1325 for (augmentation
= cie
->augmentation
; *augmentation
; augmentation
++)
1327 switch (*augmentation
)
1330 len
= dwarf_get_uleb128( &ptr
);
1335 lsda_encoding
= *ptr
++;
1339 unsigned char encoding
= *ptr
++;
1340 *handler
= (void *)dwarf_get_ptr( &ptr
, encoding
);
1344 info
.fde_encoding
= *ptr
++;
1347 info
.signal_frame
= 1;
1350 FIXME( "unknown augmentation '%c'\n", *augmentation
);
1351 if (!end
) return STATUS_INVALID_DISPOSITION
; /* cannot continue */
1356 end
= (const unsigned char *)(&cie
->length
+ 1) + cie
->length
;
1357 execute_cfa_instructions( ptr
, end
, ip
, &info
);
1359 ptr
= (const unsigned char *)(fde
+ 1);
1360 info
.ip
= dwarf_get_ptr( &ptr
, info
.fde_encoding
); /* fde code start */
1361 code_end
= info
.ip
+ dwarf_get_ptr( &ptr
, info
.fde_encoding
& 0x0f ); /* fde code length */
1363 if (aug_z_format
) /* get length of augmentation data */
1365 len
= dwarf_get_uleb128( &ptr
);
1370 *handler_data
= (void *)dwarf_get_ptr( &ptr
, lsda_encoding
);
1373 end
= (const unsigned char *)(&fde
->length
+ 1) + fde
->length
;
1374 TRACE( "fde %p len %x personality %p lsda %p code %lx-%lx\n",
1375 fde
, fde
->length
, *handler
, *handler_data
, info
.ip
, code_end
);
1376 execute_cfa_instructions( ptr
, end
, ip
, &info
);
1377 apply_frame_state( context
, &info
.state
);
1378 *frame
= context
->Rsp
;
1380 TRACE( "next function rip=%016lx\n", context
->Rip
);
1381 TRACE( " rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
1382 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
1383 TRACE( " rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
1384 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
1385 TRACE( " r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
1386 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
1387 TRACE( " r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
1388 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
1390 return STATUS_SUCCESS
;
1394 /***********************************************************************
1397 static inline int dispatch_signal(unsigned int sig
)
1399 if (handlers
[sig
] == NULL
) return 0;
1400 return handlers
[sig
](sig
);
1403 /***********************************************************************
1406 * Get the base of the signal stack for the current thread.
1408 static inline void *get_signal_stack(void)
1410 return (char *)NtCurrentTeb() + teb_size
;
1413 /***********************************************************************
1414 * is_inside_signal_stack
1416 * Check if pointer is inside the signal stack.
1418 static inline BOOL
is_inside_signal_stack( void *ptr
)
1420 return ((char *)ptr
>= (char *)get_signal_stack() &&
1421 (char *)ptr
< (char *)get_signal_stack() + signal_stack_size
);
1424 /***********************************************************************
1427 * Set the register values from a sigcontext.
1429 static void save_context( CONTEXT
*context
, const ucontext_t
*sigcontext
)
1431 context
->ContextFlags
= CONTEXT_CONTROL
| CONTEXT_INTEGER
| CONTEXT_SEGMENTS
;
1432 context
->Rax
= RAX_sig(sigcontext
);
1433 context
->Rcx
= RCX_sig(sigcontext
);
1434 context
->Rdx
= RDX_sig(sigcontext
);
1435 context
->Rbx
= RBX_sig(sigcontext
);
1436 context
->Rsp
= RSP_sig(sigcontext
);
1437 context
->Rbp
= RBP_sig(sigcontext
);
1438 context
->Rsi
= RSI_sig(sigcontext
);
1439 context
->Rdi
= RDI_sig(sigcontext
);
1440 context
->R8
= R8_sig(sigcontext
);
1441 context
->R9
= R9_sig(sigcontext
);
1442 context
->R10
= R10_sig(sigcontext
);
1443 context
->R11
= R11_sig(sigcontext
);
1444 context
->R12
= R12_sig(sigcontext
);
1445 context
->R13
= R13_sig(sigcontext
);
1446 context
->R14
= R14_sig(sigcontext
);
1447 context
->R15
= R15_sig(sigcontext
);
1448 context
->Rip
= RIP_sig(sigcontext
);
1449 context
->SegCs
= CS_sig(sigcontext
);
1450 context
->SegFs
= FS_sig(sigcontext
);
1451 context
->SegGs
= GS_sig(sigcontext
);
1452 context
->EFlags
= EFL_sig(sigcontext
);
1454 context
->SegDs
= DS_sig(sigcontext
);
1456 __asm__("movw %%ds,%0" : "=m" (context
->SegDs
));
1459 context
->SegEs
= ES_sig(sigcontext
);
1461 __asm__("movw %%es,%0" : "=m" (context
->SegEs
));
1464 context
->SegSs
= SS_sig(sigcontext
);
1466 __asm__("movw %%ss,%0" : "=m" (context
->SegSs
));
1468 if (FPU_sig(sigcontext
))
1470 context
->ContextFlags
|= CONTEXT_FLOATING_POINT
;
1471 context
->u
.FltSave
= *FPU_sig(sigcontext
);
1472 context
->MxCsr
= context
->u
.FltSave
.MxCsr
;
1477 /***********************************************************************
1480 * Build a sigcontext from the register values.
1482 static void restore_context( const CONTEXT
*context
, ucontext_t
*sigcontext
)
1484 RAX_sig(sigcontext
) = context
->Rax
;
1485 RCX_sig(sigcontext
) = context
->Rcx
;
1486 RDX_sig(sigcontext
) = context
->Rdx
;
1487 RBX_sig(sigcontext
) = context
->Rbx
;
1488 RSP_sig(sigcontext
) = context
->Rsp
;
1489 RBP_sig(sigcontext
) = context
->Rbp
;
1490 RSI_sig(sigcontext
) = context
->Rsi
;
1491 RDI_sig(sigcontext
) = context
->Rdi
;
1492 R8_sig(sigcontext
) = context
->R8
;
1493 R9_sig(sigcontext
) = context
->R9
;
1494 R10_sig(sigcontext
) = context
->R10
;
1495 R11_sig(sigcontext
) = context
->R11
;
1496 R12_sig(sigcontext
) = context
->R12
;
1497 R13_sig(sigcontext
) = context
->R13
;
1498 R14_sig(sigcontext
) = context
->R14
;
1499 R15_sig(sigcontext
) = context
->R15
;
1500 RIP_sig(sigcontext
) = context
->Rip
;
1501 CS_sig(sigcontext
) = context
->SegCs
;
1502 FS_sig(sigcontext
) = context
->SegFs
;
1503 GS_sig(sigcontext
) = context
->SegGs
;
1504 EFL_sig(sigcontext
) = context
->EFlags
;
1506 DS_sig(sigcontext
) = context
->SegDs
;
1509 ES_sig(sigcontext
) = context
->SegEs
;
1512 SS_sig(sigcontext
) = context
->SegSs
;
1514 if (FPU_sig(sigcontext
)) *FPU_sig(sigcontext
) = context
->u
.FltSave
;
1518 /**************************************************************************
1519 * __chkstk (NTDLL.@)
1521 * Supposed to touch all the stack pages, but we shouldn't need that.
1523 __ASM_GLOBAL_FUNC( __chkstk
, "ret" );
1526 /***********************************************************************
1527 * RtlCaptureContext (NTDLL.@)
1529 __ASM_GLOBAL_FUNC( RtlCaptureContext
,
1531 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
1532 "movl $0x001000f,0x30(%rcx)\n\t" /* context->ContextFlags */
1533 "stmxcsr 0x34(%rcx)\n\t" /* context->MxCsr */
1534 "movw %cs,0x38(%rcx)\n\t" /* context->SegCs */
1535 "movw %ds,0x3a(%rcx)\n\t" /* context->SegDs */
1536 "movw %es,0x3c(%rcx)\n\t" /* context->SegEs */
1537 "movw %fs,0x3e(%rcx)\n\t" /* context->SegFs */
1538 "movw %gs,0x40(%rcx)\n\t" /* context->SegGs */
1539 "movw %ss,0x42(%rcx)\n\t" /* context->SegSs */
1540 "popq 0x44(%rcx)\n\t" /* context->Eflags */
1541 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
1542 "movq %rax,0x78(%rcx)\n\t" /* context->Rax */
1543 "movq %rcx,0x80(%rcx)\n\t" /* context->Rcx */
1544 "movq %rdx,0x88(%rcx)\n\t" /* context->Rdx */
1545 "movq %rbx,0x90(%rcx)\n\t" /* context->Rbx */
1546 "leaq 8(%rsp),%rax\n\t"
1547 "movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
1548 "movq %rbp,0xa0(%rcx)\n\t" /* context->Rbp */
1549 "movq %rsi,0xa8(%rcx)\n\t" /* context->Rsi */
1550 "movq %rdi,0xb0(%rcx)\n\t" /* context->Rdi */
1551 "movq %r8,0xb8(%rcx)\n\t" /* context->R8 */
1552 "movq %r9,0xc0(%rcx)\n\t" /* context->R9 */
1553 "movq %r10,0xc8(%rcx)\n\t" /* context->R10 */
1554 "movq %r11,0xd0(%rcx)\n\t" /* context->R11 */
1555 "movq %r12,0xd8(%rcx)\n\t" /* context->R12 */
1556 "movq %r13,0xe0(%rcx)\n\t" /* context->R13 */
1557 "movq %r14,0xe8(%rcx)\n\t" /* context->R14 */
1558 "movq %r15,0xf0(%rcx)\n\t" /* context->R15 */
1559 "movq (%rsp),%rax\n\t"
1560 "movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
1561 "fxsave 0x100(%rcx)\n\t" /* context->FtlSave */
1562 "movdqa %xmm0,0x1a0(%rcx)\n\t" /* context->Xmm0 */
1563 "movdqa %xmm1,0x1b0(%rcx)\n\t" /* context->Xmm1 */
1564 "movdqa %xmm2,0x1c0(%rcx)\n\t" /* context->Xmm2 */
1565 "movdqa %xmm3,0x1d0(%rcx)\n\t" /* context->Xmm3 */
1566 "movdqa %xmm4,0x1e0(%rcx)\n\t" /* context->Xmm4 */
1567 "movdqa %xmm5,0x1f0(%rcx)\n\t" /* context->Xmm5 */
1568 "movdqa %xmm6,0x200(%rcx)\n\t" /* context->Xmm6 */
1569 "movdqa %xmm7,0x210(%rcx)\n\t" /* context->Xmm7 */
1570 "movdqa %xmm8,0x220(%rcx)\n\t" /* context->Xmm8 */
1571 "movdqa %xmm9,0x230(%rcx)\n\t" /* context->Xmm9 */
1572 "movdqa %xmm10,0x240(%rcx)\n\t" /* context->Xmm10 */
1573 "movdqa %xmm11,0x250(%rcx)\n\t" /* context->Xmm11 */
1574 "movdqa %xmm12,0x260(%rcx)\n\t" /* context->Xmm12 */
1575 "movdqa %xmm13,0x270(%rcx)\n\t" /* context->Xmm13 */
1576 "movdqa %xmm14,0x280(%rcx)\n\t" /* context->Xmm14 */
1577 "movdqa %xmm15,0x290(%rcx)\n\t" /* context->Xmm15 */
1580 /***********************************************************************
1583 * Set the new CPU context.
1585 __ASM_GLOBAL_FUNC( set_cpu_context
,
1587 __ASM_CFI(".cfi_adjust_cfa_offset 40\n\t")
1588 "ldmxcsr 0x34(%rdi)\n\t" /* context->MxCsr */
1589 "movw 0x38(%rdi),%ax\n\t" /* context->SegCs */
1590 "movq %rax,8(%rsp)\n\t"
1591 "movw 0x42(%rdi),%ax\n\t" /* context->SegSs */
1592 "movq %rax,32(%rsp)\n\t"
1593 "movq 0x44(%rdi),%rax\n\t" /* context->Eflags */
1594 "movq %rax,16(%rsp)\n\t"
1595 "movq 0x80(%rdi),%rcx\n\t" /* context->Rcx */
1596 "movq 0x88(%rdi),%rdx\n\t" /* context->Rdx */
1597 "movq 0x90(%rdi),%rbx\n\t" /* context->Rbx */
1598 "movq 0x98(%rdi),%rax\n\t" /* context->Rsp */
1599 "movq %rax,24(%rsp)\n\t"
1600 "movq 0xa0(%rdi),%rbp\n\t" /* context->Rbp */
1601 "movq 0xa8(%rdi),%rsi\n\t" /* context->Rsi */
1602 "movq 0xb8(%rdi),%r8\n\t" /* context->R8 */
1603 "movq 0xc0(%rdi),%r9\n\t" /* context->R9 */
1604 "movq 0xc8(%rdi),%r10\n\t" /* context->R10 */
1605 "movq 0xd0(%rdi),%r11\n\t" /* context->R11 */
1606 "movq 0xd8(%rdi),%r12\n\t" /* context->R12 */
1607 "movq 0xe0(%rdi),%r13\n\t" /* context->R13 */
1608 "movq 0xe8(%rdi),%r14\n\t" /* context->R14 */
1609 "movq 0xf0(%rdi),%r15\n\t" /* context->R15 */
1610 "movq 0xf8(%rdi),%rax\n\t" /* context->Rip */
1611 "movq %rax,(%rsp)\n\t"
1612 "fxrstor 0x100(%rdi)\n\t" /* context->FtlSave */
1613 "movdqa 0x1a0(%rdi),%xmm0\n\t" /* context->Xmm0 */
1614 "movdqa 0x1b0(%rdi),%xmm1\n\t" /* context->Xmm1 */
1615 "movdqa 0x1c0(%rdi),%xmm2\n\t" /* context->Xmm2 */
1616 "movdqa 0x1d0(%rdi),%xmm3\n\t" /* context->Xmm3 */
1617 "movdqa 0x1e0(%rdi),%xmm4\n\t" /* context->Xmm4 */
1618 "movdqa 0x1f0(%rdi),%xmm5\n\t" /* context->Xmm5 */
1619 "movdqa 0x200(%rdi),%xmm6\n\t" /* context->Xmm6 */
1620 "movdqa 0x210(%rdi),%xmm7\n\t" /* context->Xmm7 */
1621 "movdqa 0x220(%rdi),%xmm8\n\t" /* context->Xmm8 */
1622 "movdqa 0x230(%rdi),%xmm9\n\t" /* context->Xmm9 */
1623 "movdqa 0x240(%rdi),%xmm10\n\t" /* context->Xmm10 */
1624 "movdqa 0x250(%rdi),%xmm11\n\t" /* context->Xmm11 */
1625 "movdqa 0x260(%rdi),%xmm12\n\t" /* context->Xmm12 */
1626 "movdqa 0x270(%rdi),%xmm13\n\t" /* context->Xmm13 */
1627 "movdqa 0x280(%rdi),%xmm14\n\t" /* context->Xmm14 */
1628 "movdqa 0x290(%rdi),%xmm15\n\t" /* context->Xmm15 */
1629 "movq 0x78(%rdi),%rax\n\t" /* context->Rax */
1630 "movq 0xb0(%rdi),%rdi\n\t" /* context->Rdi */
1633 /***********************************************************************
1636 * Copy a register context according to the flags.
1638 void copy_context( CONTEXT
*to
, const CONTEXT
*from
, DWORD flags
)
1640 flags
&= ~CONTEXT_AMD64
; /* get rid of CPU id */
1641 if (flags
& CONTEXT_CONTROL
)
1643 to
->Rbp
= from
->Rbp
;
1644 to
->Rip
= from
->Rip
;
1645 to
->Rsp
= from
->Rsp
;
1646 to
->SegCs
= from
->SegCs
;
1647 to
->SegSs
= from
->SegSs
;
1648 to
->EFlags
= from
->EFlags
;
1650 if (flags
& CONTEXT_INTEGER
)
1652 to
->Rax
= from
->Rax
;
1653 to
->Rcx
= from
->Rcx
;
1654 to
->Rdx
= from
->Rdx
;
1655 to
->Rbx
= from
->Rbx
;
1656 to
->Rsi
= from
->Rsi
;
1657 to
->Rdi
= from
->Rdi
;
1660 to
->R10
= from
->R10
;
1661 to
->R11
= from
->R11
;
1662 to
->R12
= from
->R12
;
1663 to
->R13
= from
->R13
;
1664 to
->R14
= from
->R14
;
1665 to
->R15
= from
->R15
;
1667 if (flags
& CONTEXT_SEGMENTS
)
1669 to
->SegDs
= from
->SegDs
;
1670 to
->SegEs
= from
->SegEs
;
1671 to
->SegFs
= from
->SegFs
;
1672 to
->SegGs
= from
->SegGs
;
1674 if (flags
& CONTEXT_FLOATING_POINT
)
1676 to
->MxCsr
= from
->MxCsr
;
1677 to
->u
.FltSave
= from
->u
.FltSave
;
1679 if (flags
& CONTEXT_DEBUG_REGISTERS
)
1681 to
->Dr0
= from
->Dr0
;
1682 to
->Dr1
= from
->Dr1
;
1683 to
->Dr2
= from
->Dr2
;
1684 to
->Dr3
= from
->Dr3
;
1685 to
->Dr6
= from
->Dr6
;
1686 to
->Dr7
= from
->Dr7
;
1691 /***********************************************************************
1694 * Convert a register context to the server format.
1696 NTSTATUS
context_to_server( context_t
*to
, const CONTEXT
*from
)
1698 DWORD flags
= from
->ContextFlags
& ~CONTEXT_AMD64
; /* get rid of CPU id */
1700 memset( to
, 0, sizeof(*to
) );
1701 to
->cpu
= CPU_x86_64
;
1703 if (flags
& CONTEXT_CONTROL
)
1705 to
->flags
|= SERVER_CTX_CONTROL
;
1706 to
->ctl
.x86_64_regs
.rbp
= from
->Rbp
;
1707 to
->ctl
.x86_64_regs
.rip
= from
->Rip
;
1708 to
->ctl
.x86_64_regs
.rsp
= from
->Rsp
;
1709 to
->ctl
.x86_64_regs
.cs
= from
->SegCs
;
1710 to
->ctl
.x86_64_regs
.ss
= from
->SegSs
;
1711 to
->ctl
.x86_64_regs
.flags
= from
->EFlags
;
1713 if (flags
& CONTEXT_INTEGER
)
1715 to
->flags
|= SERVER_CTX_INTEGER
;
1716 to
->integer
.x86_64_regs
.rax
= from
->Rax
;
1717 to
->integer
.x86_64_regs
.rcx
= from
->Rcx
;
1718 to
->integer
.x86_64_regs
.rdx
= from
->Rdx
;
1719 to
->integer
.x86_64_regs
.rbx
= from
->Rbx
;
1720 to
->integer
.x86_64_regs
.rsi
= from
->Rsi
;
1721 to
->integer
.x86_64_regs
.rdi
= from
->Rdi
;
1722 to
->integer
.x86_64_regs
.r8
= from
->R8
;
1723 to
->integer
.x86_64_regs
.r9
= from
->R9
;
1724 to
->integer
.x86_64_regs
.r10
= from
->R10
;
1725 to
->integer
.x86_64_regs
.r11
= from
->R11
;
1726 to
->integer
.x86_64_regs
.r12
= from
->R12
;
1727 to
->integer
.x86_64_regs
.r13
= from
->R13
;
1728 to
->integer
.x86_64_regs
.r14
= from
->R14
;
1729 to
->integer
.x86_64_regs
.r15
= from
->R15
;
1731 if (flags
& CONTEXT_SEGMENTS
)
1733 to
->flags
|= SERVER_CTX_SEGMENTS
;
1734 to
->seg
.x86_64_regs
.ds
= from
->SegDs
;
1735 to
->seg
.x86_64_regs
.es
= from
->SegEs
;
1736 to
->seg
.x86_64_regs
.fs
= from
->SegFs
;
1737 to
->seg
.x86_64_regs
.gs
= from
->SegGs
;
1739 if (flags
& CONTEXT_FLOATING_POINT
)
1741 to
->flags
|= SERVER_CTX_FLOATING_POINT
;
1742 memcpy( to
->fp
.x86_64_regs
.fpregs
, &from
->u
.FltSave
, sizeof(to
->fp
.x86_64_regs
.fpregs
) );
1744 if (flags
& CONTEXT_DEBUG_REGISTERS
)
1746 to
->flags
|= SERVER_CTX_DEBUG_REGISTERS
;
1747 to
->debug
.x86_64_regs
.dr0
= from
->Dr0
;
1748 to
->debug
.x86_64_regs
.dr1
= from
->Dr1
;
1749 to
->debug
.x86_64_regs
.dr2
= from
->Dr2
;
1750 to
->debug
.x86_64_regs
.dr3
= from
->Dr3
;
1751 to
->debug
.x86_64_regs
.dr6
= from
->Dr6
;
1752 to
->debug
.x86_64_regs
.dr7
= from
->Dr7
;
1754 return STATUS_SUCCESS
;
1758 /***********************************************************************
1759 * context_from_server
1761 * Convert a register context from the server format.
1763 NTSTATUS
context_from_server( CONTEXT
*to
, const context_t
*from
)
1765 if (from
->cpu
!= CPU_x86_64
) return STATUS_INVALID_PARAMETER
;
1767 to
->ContextFlags
= CONTEXT_AMD64
;
1768 if (from
->flags
& SERVER_CTX_CONTROL
)
1770 to
->ContextFlags
|= CONTEXT_CONTROL
;
1771 to
->Rbp
= from
->ctl
.x86_64_regs
.rbp
;
1772 to
->Rip
= from
->ctl
.x86_64_regs
.rip
;
1773 to
->Rsp
= from
->ctl
.x86_64_regs
.rsp
;
1774 to
->SegCs
= from
->ctl
.x86_64_regs
.cs
;
1775 to
->SegSs
= from
->ctl
.x86_64_regs
.ss
;
1776 to
->EFlags
= from
->ctl
.x86_64_regs
.flags
;
1779 if (from
->flags
& SERVER_CTX_INTEGER
)
1781 to
->ContextFlags
|= CONTEXT_INTEGER
;
1782 to
->Rax
= from
->integer
.x86_64_regs
.rax
;
1783 to
->Rcx
= from
->integer
.x86_64_regs
.rcx
;
1784 to
->Rdx
= from
->integer
.x86_64_regs
.rdx
;
1785 to
->Rbx
= from
->integer
.x86_64_regs
.rbx
;
1786 to
->Rsi
= from
->integer
.x86_64_regs
.rsi
;
1787 to
->Rdi
= from
->integer
.x86_64_regs
.rdi
;
1788 to
->R8
= from
->integer
.x86_64_regs
.r8
;
1789 to
->R9
= from
->integer
.x86_64_regs
.r9
;
1790 to
->R10
= from
->integer
.x86_64_regs
.r10
;
1791 to
->R11
= from
->integer
.x86_64_regs
.r11
;
1792 to
->R12
= from
->integer
.x86_64_regs
.r12
;
1793 to
->R13
= from
->integer
.x86_64_regs
.r13
;
1794 to
->R14
= from
->integer
.x86_64_regs
.r14
;
1795 to
->R15
= from
->integer
.x86_64_regs
.r15
;
1797 if (from
->flags
& SERVER_CTX_SEGMENTS
)
1799 to
->ContextFlags
|= CONTEXT_SEGMENTS
;
1800 to
->SegDs
= from
->seg
.x86_64_regs
.ds
;
1801 to
->SegEs
= from
->seg
.x86_64_regs
.es
;
1802 to
->SegFs
= from
->seg
.x86_64_regs
.fs
;
1803 to
->SegGs
= from
->seg
.x86_64_regs
.gs
;
1805 if (from
->flags
& SERVER_CTX_FLOATING_POINT
)
1807 to
->ContextFlags
|= CONTEXT_FLOATING_POINT
;
1808 memcpy( &to
->u
.FltSave
, from
->fp
.x86_64_regs
.fpregs
, sizeof(from
->fp
.x86_64_regs
.fpregs
) );
1809 to
->MxCsr
= to
->u
.FltSave
.MxCsr
;
1811 if (from
->flags
& SERVER_CTX_DEBUG_REGISTERS
)
1813 to
->ContextFlags
|= CONTEXT_DEBUG_REGISTERS
;
1814 to
->Dr0
= from
->debug
.x86_64_regs
.dr0
;
1815 to
->Dr1
= from
->debug
.x86_64_regs
.dr1
;
1816 to
->Dr2
= from
->debug
.x86_64_regs
.dr2
;
1817 to
->Dr3
= from
->debug
.x86_64_regs
.dr3
;
1818 to
->Dr6
= from
->debug
.x86_64_regs
.dr6
;
1819 to
->Dr7
= from
->debug
.x86_64_regs
.dr7
;
1821 return STATUS_SUCCESS
;
1825 extern void raise_func_trampoline( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, raise_func func
);
1826 __ASM_GLOBAL_FUNC( raise_func_trampoline
,
1827 __ASM_CFI(".cfi_signal_frame\n\t")
1828 __ASM_CFI(".cfi_def_cfa %rbp,144\n\t") /* red zone + rip + rbp */
1829 __ASM_CFI(".cfi_rel_offset %rip,8\n\t")
1830 __ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
1834 /***********************************************************************
1837 * Setup a proper stack frame for the raise function, and modify the
1838 * sigcontext so that the return from the signal handler will call
1839 * the raise function.
1841 static EXCEPTION_RECORD
*setup_exception( ucontext_t
*sigcontext
, raise_func func
)
1846 EXCEPTION_RECORD rec
;
1849 ULONG64 red_zone
[16];
1852 DWORD exception_code
= 0;
1854 stack
= (struct stack_layout
*)(RSP_sig(sigcontext
) & ~15);
1856 /* stack sanity checks */
1858 if (is_inside_signal_stack( stack
))
1860 ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1861 GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
), (ULONG_PTR
)RSP_sig(sigcontext
),
1862 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1866 if (stack
- 1 > stack
|| /* check for overflow in subtraction */
1867 (char *)stack
<= (char *)NtCurrentTeb()->DeallocationStack
||
1868 (char *)stack
> (char *)NtCurrentTeb()->Tib
.StackBase
)
1870 WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
1871 GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
), (ULONG_PTR
)RSP_sig(sigcontext
),
1872 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1874 else if ((char *)(stack
- 1) < (char *)NtCurrentTeb()->DeallocationStack
+ 4096)
1876 /* stack overflow on last page, unrecoverable */
1877 UINT diff
= (char *)NtCurrentTeb()->DeallocationStack
+ 4096 - (char *)(stack
- 1);
1878 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1879 diff
, GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
),
1880 (ULONG_PTR
)RSP_sig(sigcontext
), NtCurrentTeb()->DeallocationStack
,
1881 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1884 else if ((char *)(stack
- 1) < (char *)NtCurrentTeb()->Tib
.StackLimit
)
1886 /* stack access below stack limit, may be recoverable */
1887 if (virtual_handle_stack_fault( stack
- 1 )) exception_code
= EXCEPTION_STACK_OVERFLOW
;
1890 UINT diff
= (char *)NtCurrentTeb()->Tib
.StackLimit
- (char *)(stack
- 1);
1891 ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
1892 diff
, GetCurrentThreadId(), (ULONG_PTR
)RIP_sig(sigcontext
),
1893 (ULONG_PTR
)RSP_sig(sigcontext
), NtCurrentTeb()->DeallocationStack
,
1894 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1899 stack
--; /* push the stack_layout structure */
1900 #if defined(VALGRIND_MAKE_MEM_UNDEFINED)
1901 VALGRIND_MAKE_MEM_UNDEFINED(stack
, sizeof(*stack
));
1902 #elif defined(VALGRIND_MAKE_WRITABLE)
1903 VALGRIND_MAKE_WRITABLE(stack
, sizeof(*stack
));
1905 stack
->rec
.ExceptionRecord
= NULL
;
1906 stack
->rec
.ExceptionCode
= exception_code
;
1907 stack
->rec
.ExceptionFlags
= EXCEPTION_CONTINUABLE
;
1908 stack
->rec
.ExceptionAddress
= (void *)RIP_sig(sigcontext
);
1909 stack
->rec
.NumberParameters
= 0;
1910 save_context( &stack
->context
, sigcontext
);
1912 /* store return address and %rbp without aligning, so that the offset is fixed */
1913 rsp_ptr
= (ULONG64
*)RSP_sig(sigcontext
) - 16;
1914 *(--rsp_ptr
) = RIP_sig(sigcontext
);
1915 *(--rsp_ptr
) = RBP_sig(sigcontext
);
1917 /* now modify the sigcontext to return to the raise function */
1918 RIP_sig(sigcontext
) = (ULONG_PTR
)raise_func_trampoline
;
1919 RDI_sig(sigcontext
) = (ULONG_PTR
)&stack
->rec
;
1920 RSI_sig(sigcontext
) = (ULONG_PTR
)&stack
->context
;
1921 RDX_sig(sigcontext
) = (ULONG_PTR
)func
;
1922 RBP_sig(sigcontext
) = (ULONG_PTR
)rsp_ptr
;
1923 RSP_sig(sigcontext
) = (ULONG_PTR
)stack
;
1924 /* clear single-step, direction, and align check flag */
1925 EFL_sig(sigcontext
) &= ~(0x100|0x400|0x40000);
1931 /**********************************************************************
1932 * find_function_info
1934 static RUNTIME_FUNCTION
*find_function_info( ULONG64 pc
, HMODULE module
,
1935 RUNTIME_FUNCTION
*func
, ULONG size
)
1938 int max
= size
/sizeof(*func
) - 1;
1942 int pos
= (min
+ max
) / 2;
1943 if ((char *)pc
< (char *)module
+ func
[pos
].BeginAddress
) max
= pos
- 1;
1944 else if ((char *)pc
>= (char *)module
+ func
[pos
].EndAddress
) min
= pos
+ 1;
1948 while (func
->UnwindData
& 1) /* follow chained entry */
1949 func
= (RUNTIME_FUNCTION
*)((char *)module
+ (func
->UnwindData
& ~1));
1956 /**********************************************************************
1957 * lookup_function_info
1959 static RUNTIME_FUNCTION
*lookup_function_info( ULONG64 pc
, ULONG64
*base
, LDR_MODULE
**module
)
1961 RUNTIME_FUNCTION
*func
= NULL
;
1962 struct dynamic_unwind_entry
*entry
;
1965 /* PE module or wine module */
1966 if (!LdrFindEntryForAddress( (void *)pc
, module
))
1968 *base
= (ULONG64
)(*module
)->BaseAddress
;
1969 if ((func
= RtlImageDirectoryEntryToData( (*module
)->BaseAddress
, TRUE
,
1970 IMAGE_DIRECTORY_ENTRY_EXCEPTION
, &size
)))
1972 /* lookup in function table */
1973 func
= find_function_info( pc
, (*module
)->BaseAddress
, func
, size
);
1980 RtlEnterCriticalSection( &dynamic_unwind_section
);
1981 LIST_FOR_EACH_ENTRY( entry
, &dynamic_unwind_list
, struct dynamic_unwind_entry
, entry
)
1983 if (pc
>= entry
->base
&& pc
< entry
->base
+ entry
->size
)
1985 *base
= entry
->base
;
1987 /* use callback or lookup in function table */
1988 if (entry
->callback
)
1989 func
= entry
->callback( pc
, entry
->context
);
1991 func
= find_function_info( pc
, (HMODULE
)entry
->base
, entry
->table
, entry
->table_size
);
1995 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2001 /**********************************************************************
2004 * Call a single exception handler.
2005 * FIXME: Handle nested exceptions.
2007 static NTSTATUS
call_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
, CONTEXT
*orig_context
)
2011 dispatch
->ControlPc
= dispatch
->ContextRecord
->Rip
;
2013 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2014 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
2015 res
= dispatch
->LanguageHandler( rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
2016 TRACE( "handler at %p returned %u\n", dispatch
->LanguageHandler
, res
);
2020 case ExceptionContinueExecution
:
2021 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
2022 *orig_context
= *dispatch
->ContextRecord
;
2023 return STATUS_SUCCESS
;
2024 case ExceptionContinueSearch
:
2026 case ExceptionNestedException
:
2029 return STATUS_INVALID_DISPOSITION
;
2031 return STATUS_UNHANDLED_EXCEPTION
;
2035 /**********************************************************************
2038 * Call a single exception handler from the TEB chain.
2039 * FIXME: Handle nested exceptions.
2041 static NTSTATUS
call_teb_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
,
2042 EXCEPTION_REGISTRATION_RECORD
*teb_frame
, CONTEXT
*orig_context
)
2044 EXCEPTION_REGISTRATION_RECORD
*dispatcher
;
2047 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
2048 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
2049 res
= teb_frame
->Handler( rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
2050 TRACE( "handler at %p returned %u\n", teb_frame
->Handler
, res
);
2054 case ExceptionContinueExecution
:
2055 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
2056 *orig_context
= *dispatch
->ContextRecord
;
2057 return STATUS_SUCCESS
;
2058 case ExceptionContinueSearch
:
2060 case ExceptionNestedException
:
2063 return STATUS_INVALID_DISPOSITION
;
2065 return STATUS_UNHANDLED_EXCEPTION
;
2069 /**********************************************************************
2070 * call_stack_handlers
2072 * Call the stack handlers chain.
2074 static NTSTATUS
call_stack_handlers( EXCEPTION_RECORD
*rec
, CONTEXT
*orig_context
)
2076 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
2077 UNWIND_HISTORY_TABLE table
;
2078 DISPATCHER_CONTEXT dispatch
;
2079 CONTEXT context
, new_context
;
2083 context
= *orig_context
;
2084 dispatch
.TargetIp
= 0;
2085 dispatch
.ContextRecord
= &context
;
2086 dispatch
.HistoryTable
= &table
;
2087 dispatch
.ScopeIndex
= 0; /* FIXME */
2090 new_context
= context
;
2092 /* FIXME: should use the history table to make things faster */
2094 dispatch
.ImageBase
= 0;
2096 /* first look for PE exception information */
2098 if ((dispatch
.FunctionEntry
= lookup_function_info( context
.Rip
, &dispatch
.ImageBase
, &module
)))
2100 dispatch
.LanguageHandler
= RtlVirtualUnwind( UNW_FLAG_EHANDLER
, dispatch
.ImageBase
,
2101 context
.Rip
, dispatch
.FunctionEntry
,
2102 &new_context
, &dispatch
.HandlerData
,
2103 &dispatch
.EstablisherFrame
, NULL
);
2107 /* then look for host system exception information */
2109 if (!module
|| (module
->Flags
& LDR_WINE_INTERNAL
))
2111 struct dwarf_eh_bases bases
;
2112 const struct dwarf_fde
*fde
= _Unwind_Find_FDE( (void *)(context
.Rip
- 1), &bases
);
2116 status
= dwarf_virtual_unwind( context
.Rip
, &dispatch
.EstablisherFrame
, &new_context
,
2117 fde
, &bases
, &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
2118 if (status
!= STATUS_SUCCESS
) return status
;
2119 dispatch
.FunctionEntry
= NULL
;
2120 if (dispatch
.LanguageHandler
&& !module
)
2122 FIXME( "calling personality routine in system library not supported yet\n" );
2123 dispatch
.LanguageHandler
= NULL
;
2128 else WARN( "exception data not found in %s\n", debugstr_w(module
->BaseDllName
.Buffer
) );
2130 /* no exception information, treat as a leaf function */
2132 new_context
.Rip
= *(ULONG64
*)context
.Rsp
;
2133 new_context
.Rsp
= context
.Rsp
+ sizeof(ULONG64
);
2134 dispatch
.EstablisherFrame
= new_context
.Rsp
;
2135 dispatch
.LanguageHandler
= NULL
;
2138 if (!dispatch
.EstablisherFrame
) break;
2140 if ((dispatch
.EstablisherFrame
& 7) ||
2141 dispatch
.EstablisherFrame
< (ULONG64
)NtCurrentTeb()->Tib
.StackLimit
||
2142 dispatch
.EstablisherFrame
> (ULONG64
)NtCurrentTeb()->Tib
.StackBase
)
2144 ERR( "invalid frame %lx (%p-%p)\n", dispatch
.EstablisherFrame
,
2145 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
2146 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
2150 if (dispatch
.LanguageHandler
)
2152 status
= call_handler( rec
, &dispatch
, orig_context
);
2153 if (status
!= STATUS_UNHANDLED_EXCEPTION
) return status
;
2155 /* hack: call wine handlers registered in the tib list */
2156 else while ((ULONG64
)teb_frame
< new_context
.Rsp
)
2158 TRACE( "found wine frame %p rsp %lx handler %p\n",
2159 teb_frame
, new_context
.Rsp
, teb_frame
->Handler
);
2160 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
2161 context
= *orig_context
;
2162 status
= call_teb_handler( rec
, &dispatch
, teb_frame
, orig_context
);
2163 if (status
!= STATUS_UNHANDLED_EXCEPTION
) return status
;
2164 teb_frame
= teb_frame
->Prev
;
2167 if (new_context
.Rsp
== (ULONG64
)NtCurrentTeb()->Tib
.StackBase
) break;
2168 context
= new_context
;
2170 return STATUS_UNHANDLED_EXCEPTION
;
2174 /*******************************************************************
2177 * Implementation of NtRaiseException.
2179 static NTSTATUS
raise_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, BOOL first_chance
)
2187 TRACE( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
2188 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
2189 context
->Rip
, GetCurrentThreadId() );
2190 for (c
= 0; c
< min( EXCEPTION_MAXIMUM_PARAMETERS
, rec
->NumberParameters
); c
++)
2191 TRACE( " info[%d]=%016lx\n", c
, rec
->ExceptionInformation
[c
] );
2192 if (rec
->ExceptionCode
== EXCEPTION_WINE_STUB
)
2194 if (rec
->ExceptionInformation
[1] >> 16)
2195 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
2196 rec
->ExceptionAddress
,
2197 (char*)rec
->ExceptionInformation
[0], (char*)rec
->ExceptionInformation
[1] );
2199 MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
2200 rec
->ExceptionAddress
,
2201 (char*)rec
->ExceptionInformation
[0], rec
->ExceptionInformation
[1] );
2205 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
2206 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
2207 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
2208 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
2209 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
2210 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
2211 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
2212 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
2214 status
= send_debug_event( rec
, TRUE
, context
);
2215 if (status
== DBG_CONTINUE
|| status
== DBG_EXCEPTION_HANDLED
)
2216 return STATUS_SUCCESS
;
2218 if (call_vectored_handlers( rec
, context
) == EXCEPTION_CONTINUE_EXECUTION
)
2219 return STATUS_SUCCESS
;
2221 if ((status
= call_stack_handlers( rec
, context
)) != STATUS_UNHANDLED_EXCEPTION
)
2225 /* last chance exception */
2227 status
= send_debug_event( rec
, FALSE
, context
);
2228 if (status
!= DBG_CONTINUE
)
2230 if (rec
->ExceptionFlags
& EH_STACK_INVALID
)
2231 ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
2232 else if (rec
->ExceptionCode
== STATUS_NONCONTINUABLE_EXCEPTION
)
2233 ERR("Process attempted to continue execution after noncontinuable exception.\n");
2235 ERR("Unhandled exception code %x flags %x addr %p\n",
2236 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
);
2237 NtTerminateProcess( NtCurrentProcess(), rec
->ExceptionCode
);
2239 return STATUS_SUCCESS
;
2243 /**********************************************************************
2244 * raise_segv_exception
2246 static void raise_segv_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2250 switch(rec
->ExceptionCode
)
2252 case EXCEPTION_ACCESS_VIOLATION
:
2253 if (rec
->NumberParameters
== 2)
2255 if (!(rec
->ExceptionCode
= virtual_handle_fault( (void *)rec
->ExceptionInformation
[1],
2256 rec
->ExceptionInformation
[0] )))
2257 set_cpu_context( context
);
2261 status
= raise_exception( rec
, context
, TRUE
);
2262 if (status
) raise_status( status
, rec
);
2263 set_cpu_context( context
);
2267 /**********************************************************************
2268 * raise_generic_exception
2270 * Generic raise function for exceptions that don't need special treatment.
2272 static void raise_generic_exception( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
2274 NTSTATUS status
= raise_exception( rec
, context
, TRUE
);
2275 if (status
) raise_status( status
, rec
);
2276 set_cpu_context( context
);
2280 /**********************************************************************
2283 * Handler for SIGSEGV and related errors.
2285 static void segv_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2287 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_segv_exception
);
2288 ucontext_t
*ucontext
= sigcontext
;
2290 switch(TRAP_sig(ucontext
))
2292 case TRAP_x86_OFLOW
: /* Overflow exception */
2293 rec
->ExceptionCode
= EXCEPTION_INT_OVERFLOW
;
2295 case TRAP_x86_BOUND
: /* Bound range exception */
2296 rec
->ExceptionCode
= EXCEPTION_ARRAY_BOUNDS_EXCEEDED
;
2298 case TRAP_x86_PRIVINFLT
: /* Invalid opcode exception */
2299 rec
->ExceptionCode
= EXCEPTION_ILLEGAL_INSTRUCTION
;
2301 case TRAP_x86_STKFLT
: /* Stack fault */
2302 rec
->ExceptionCode
= EXCEPTION_STACK_OVERFLOW
;
2304 case TRAP_x86_SEGNPFLT
: /* Segment not present exception */
2305 case TRAP_x86_PROTFLT
: /* General protection fault */
2306 case TRAP_x86_UNKNOWN
: /* Unknown fault code */
2307 rec
->ExceptionCode
= ERROR_sig(ucontext
) ? EXCEPTION_ACCESS_VIOLATION
: EXCEPTION_PRIV_INSTRUCTION
;
2308 rec
->ExceptionCode
= EXCEPTION_ACCESS_VIOLATION
;
2310 case TRAP_x86_PAGEFLT
: /* Page fault */
2311 rec
->ExceptionCode
= EXCEPTION_ACCESS_VIOLATION
;
2312 rec
->NumberParameters
= 2;
2313 rec
->ExceptionInformation
[0] = (ERROR_sig(ucontext
) & 2) != 0;
2314 rec
->ExceptionInformation
[1] = (ULONG_PTR
)siginfo
->si_addr
;
2316 case TRAP_x86_ALIGNFLT
: /* Alignment check exception */
2317 rec
->ExceptionCode
= EXCEPTION_DATATYPE_MISALIGNMENT
;
2320 ERR( "Got unexpected trap %ld\n", (ULONG_PTR
)TRAP_sig(ucontext
) );
2322 case TRAP_x86_NMI
: /* NMI interrupt */
2323 case TRAP_x86_DNA
: /* Device not available exception */
2324 case TRAP_x86_DOUBLEFLT
: /* Double fault exception */
2325 case TRAP_x86_TSSFLT
: /* Invalid TSS exception */
2326 case TRAP_x86_MCHK
: /* Machine check exception */
2327 case TRAP_x86_CACHEFLT
: /* Cache flush exception */
2328 rec
->ExceptionCode
= EXCEPTION_ILLEGAL_INSTRUCTION
;
2333 /**********************************************************************
2336 * Handler for SIGTRAP.
2338 static void trap_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2340 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2342 switch (siginfo
->si_code
)
2344 case TRAP_TRACE
: /* Single-step exception */
2345 case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
2346 rec
->ExceptionCode
= EXCEPTION_SINGLE_STEP
;
2348 case TRAP_BRKPT
: /* Breakpoint exception */
2349 rec
->ExceptionAddress
= (char *)rec
->ExceptionAddress
- 1; /* back up over the int3 instruction */
2352 rec
->ExceptionCode
= EXCEPTION_BREAKPOINT
;
2357 /**********************************************************************
2360 * Handler for SIGFPE.
2362 static void fpe_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2364 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2366 switch (siginfo
->si_code
)
2369 rec
->ExceptionCode
= EXCEPTION_ARRAY_BOUNDS_EXCEEDED
;
2372 rec
->ExceptionCode
= EXCEPTION_INT_DIVIDE_BY_ZERO
;
2375 rec
->ExceptionCode
= EXCEPTION_INT_OVERFLOW
;
2378 rec
->ExceptionCode
= EXCEPTION_FLT_DIVIDE_BY_ZERO
;
2381 rec
->ExceptionCode
= EXCEPTION_FLT_OVERFLOW
;
2384 rec
->ExceptionCode
= EXCEPTION_FLT_UNDERFLOW
;
2387 rec
->ExceptionCode
= EXCEPTION_FLT_INEXACT_RESULT
;
2391 rec
->ExceptionCode
= EXCEPTION_FLT_INVALID_OPERATION
;
2396 /**********************************************************************
2399 * Handler for SIGINT.
2401 static void int_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2403 if (!dispatch_signal(SIGINT
))
2405 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2406 rec
->ExceptionCode
= CONTROL_C_EXIT
;
2411 /**********************************************************************
2414 * Handler for SIGABRT.
2416 static void abrt_handler( int signal
, siginfo_t
*siginfo
, void *sigcontext
)
2418 EXCEPTION_RECORD
*rec
= setup_exception( sigcontext
, raise_generic_exception
);
2419 rec
->ExceptionCode
= EXCEPTION_WINE_ASSERTION
;
2420 rec
->ExceptionFlags
= EH_NONCONTINUABLE
;
2424 /**********************************************************************
2427 * Handler for SIGQUIT.
2429 static void quit_handler( int signal
, siginfo_t
*siginfo
, void *ucontext
)
2435 /**********************************************************************
2438 * Handler for SIGUSR1, used to signal a thread that it got suspended.
2440 static void usr1_handler( int signal
, siginfo_t
*siginfo
, void *ucontext
)
2444 save_context( &context
, ucontext
);
2445 wait_suspend( &context
);
2446 restore_context( &context
, ucontext
);
2450 /***********************************************************************
2451 * __wine_set_signal_handler (NTDLL.@)
2453 int CDECL
__wine_set_signal_handler(unsigned int sig
, wine_signal_handler wsh
)
2455 if (sig
> sizeof(handlers
) / sizeof(handlers
[0])) return -1;
2456 if (handlers
[sig
] != NULL
) return -2;
2457 handlers
[sig
] = wsh
;
2462 /**********************************************************************
2463 * signal_alloc_thread
2465 NTSTATUS
signal_alloc_thread( TEB
**teb
)
2467 static size_t sigstack_zero_bits
;
2471 if (!sigstack_zero_bits
)
2473 size_t min_size
= teb_size
+ max( MINSIGSTKSZ
, 8192 );
2474 /* find the first power of two not smaller than min_size */
2475 sigstack_zero_bits
= 12;
2476 while ((1u << sigstack_zero_bits
) < min_size
) sigstack_zero_bits
++;
2477 signal_stack_size
= (1 << sigstack_zero_bits
) - teb_size
;
2478 assert( sizeof(TEB
) <= teb_size
);
2481 size
= 1 << sigstack_zero_bits
;
2483 if (!(status
= NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb
, sigstack_zero_bits
,
2484 &size
, MEM_COMMIT
| MEM_TOP_DOWN
, PAGE_READWRITE
)))
2486 (*teb
)->Tib
.Self
= &(*teb
)->Tib
;
2487 (*teb
)->Tib
.ExceptionList
= (void *)~0UL;
2493 /**********************************************************************
2494 * signal_free_thread
2496 void signal_free_thread( TEB
*teb
)
2500 if (teb
->DeallocationStack
)
2503 NtFreeVirtualMemory( GetCurrentProcess(), &teb
->DeallocationStack
, &size
, MEM_RELEASE
);
2506 NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb
, &size
, MEM_RELEASE
);
2510 /**********************************************************************
2511 * signal_init_thread
2513 void signal_init_thread( TEB
*teb
)
2515 const WORD fpu_cw
= 0x27f;
2518 #if defined __linux__
2519 arch_prctl( ARCH_SET_GS
, teb
);
2520 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
2521 amd64_set_gsbase( teb
);
2522 #elif defined(__NetBSD__)
2523 sysarch( X86_64_SET_GSBASE
, &teb
);
2525 # error Please define setting %gs for your architecture
2528 ss
.ss_sp
= (char *)teb
+ teb_size
;
2529 ss
.ss_size
= signal_stack_size
;
2531 if (sigaltstack(&ss
, NULL
) == -1) perror( "sigaltstack" );
2534 __asm__
volatile ("fninit; fldcw %0" : : "m" (fpu_cw
));
2536 FIXME("FPU setup not implemented for this platform.\n");
2540 /**********************************************************************
2541 * signal_init_process
2543 void signal_init_process(void)
2545 struct sigaction sig_act
;
2547 sig_act
.sa_mask
= server_block_set
;
2548 sig_act
.sa_flags
= SA_RESTART
| SA_SIGINFO
| SA_ONSTACK
;
2550 sig_act
.sa_sigaction
= int_handler
;
2551 if (sigaction( SIGINT
, &sig_act
, NULL
) == -1) goto error
;
2552 sig_act
.sa_sigaction
= fpe_handler
;
2553 if (sigaction( SIGFPE
, &sig_act
, NULL
) == -1) goto error
;
2554 sig_act
.sa_sigaction
= abrt_handler
;
2555 if (sigaction( SIGABRT
, &sig_act
, NULL
) == -1) goto error
;
2556 sig_act
.sa_sigaction
= quit_handler
;
2557 if (sigaction( SIGQUIT
, &sig_act
, NULL
) == -1) goto error
;
2558 sig_act
.sa_sigaction
= usr1_handler
;
2559 if (sigaction( SIGUSR1
, &sig_act
, NULL
) == -1) goto error
;
2561 sig_act
.sa_sigaction
= segv_handler
;
2562 if (sigaction( SIGSEGV
, &sig_act
, NULL
) == -1) goto error
;
2563 if (sigaction( SIGILL
, &sig_act
, NULL
) == -1) goto error
;
2565 if (sigaction( SIGBUS
, &sig_act
, NULL
) == -1) goto error
;
2569 sig_act
.sa_sigaction
= trap_handler
;
2570 if (sigaction( SIGTRAP
, &sig_act
, NULL
) == -1) goto error
;
2575 perror("sigaction");
2580 /**********************************************************************
2581 * RtlAddFunctionTable (NTDLL.@)
2583 BOOLEAN CDECL
RtlAddFunctionTable( RUNTIME_FUNCTION
*table
, DWORD count
, DWORD64 addr
)
2585 struct dynamic_unwind_entry
*entry
;
2587 TRACE( "%p %u %lx\n", table
, count
, addr
);
2589 /* NOTE: Windows doesn't check if table is aligned or a NULL pointer */
2591 entry
= RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry
) );
2596 entry
->size
= table
[count
- 1].EndAddress
;
2597 entry
->table
= table
;
2598 entry
->table_size
= count
* sizeof(RUNTIME_FUNCTION
);
2599 entry
->callback
= NULL
;
2600 entry
->context
= NULL
;
2602 RtlEnterCriticalSection( &dynamic_unwind_section
);
2603 list_add_tail( &dynamic_unwind_list
, &entry
->entry
);
2604 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2610 /**********************************************************************
2611 * RtlInstallFunctionTableCallback (NTDLL.@)
2613 BOOLEAN CDECL
RtlInstallFunctionTableCallback( DWORD64 table
, DWORD64 base
, DWORD length
,
2614 PGET_RUNTIME_FUNCTION_CALLBACK callback
, PVOID context
, PCWSTR dll
)
2616 struct dynamic_unwind_entry
*entry
;
2618 TRACE( "%lx %lx %d %p %p %s\n", table
, base
, length
, callback
, context
, wine_dbgstr_w(dll
) );
2620 /* NOTE: Windows doesn't check if the provided callback is a NULL pointer */
2622 /* both low-order bits must be set */
2623 if ((table
& 0x3) != 0x3)
2626 entry
= RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry
) );
2631 entry
->size
= length
;
2632 entry
->table
= (RUNTIME_FUNCTION
*)table
;
2633 entry
->table_size
= 0;
2634 entry
->callback
= callback
;
2635 entry
->context
= context
;
2637 RtlEnterCriticalSection( &dynamic_unwind_section
);
2638 list_add_tail( &dynamic_unwind_list
, &entry
->entry
);
2639 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2645 /**********************************************************************
2646 * RtlDeleteFunctionTable (NTDLL.@)
2648 BOOLEAN CDECL
RtlDeleteFunctionTable( RUNTIME_FUNCTION
*table
)
2650 struct dynamic_unwind_entry
*entry
, *to_free
= NULL
;
2652 TRACE( "%p\n", table
);
2654 RtlEnterCriticalSection( &dynamic_unwind_section
);
2655 LIST_FOR_EACH_ENTRY( entry
, &dynamic_unwind_list
, struct dynamic_unwind_entry
, entry
)
2657 if (entry
->table
== table
)
2660 list_remove( &entry
->entry
);
2664 RtlLeaveCriticalSection( &dynamic_unwind_section
);
2669 RtlFreeHeap( GetProcessHeap(), 0, to_free
);
2674 /**********************************************************************
2675 * RtlLookupFunctionEntry (NTDLL.@)
2677 PRUNTIME_FUNCTION WINAPI
RtlLookupFunctionEntry( ULONG64 pc
, ULONG64
*base
, UNWIND_HISTORY_TABLE
*table
)
2680 RUNTIME_FUNCTION
*func
;
2682 /* FIXME: should use the history table to make things faster */
2684 func
= lookup_function_info( pc
, base
, &module
);
2689 WARN( "no exception table found in module %p pc %lx\n", module
->BaseAddress
, pc
);
2691 WARN( "module not found for %lx\n", pc
);
2697 static ULONG64
get_int_reg( CONTEXT
*context
, int reg
)
2699 return *(&context
->Rax
+ reg
);
2702 static void set_int_reg( CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
, int reg
, ULONG64 val
)
2704 *(&context
->Rax
+ reg
) = val
;
2705 if (ctx_ptr
) ctx_ptr
->u2
.IntegerContext
[reg
] = &context
->Rax
+ reg
;
2708 static void set_float_reg( CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
, int reg
, M128A val
)
2710 *(&context
->u
.s
.Xmm0
+ reg
) = val
;
2711 if (ctx_ptr
) ctx_ptr
->u
.FloatingContext
[reg
] = &context
->u
.s
.Xmm0
+ reg
;
2714 static int get_opcode_size( struct opcode op
)
2718 case UWOP_ALLOC_LARGE
:
2719 return 2 + (op
.info
!= 0);
2720 case UWOP_SAVE_NONVOL
:
2721 case UWOP_SAVE_XMM128
:
2723 case UWOP_SAVE_NONVOL_FAR
:
2724 case UWOP_SAVE_XMM128_FAR
:
2731 static BOOL
is_inside_epilog( BYTE
*pc
, ULONG64 base
, const RUNTIME_FUNCTION
*function
)
2733 /* add or lea must be the first instruction, and it must have a rex.W prefix */
2734 if ((pc
[0] & 0xf8) == 0x48)
2738 case 0x81: /* add $nnnn,%rsp */
2739 if (pc
[0] == 0x48 && pc
[2] == 0xc4)
2745 case 0x83: /* add $n,%rsp */
2746 if (pc
[0] == 0x48 && pc
[2] == 0xc4)
2752 case 0x8d: /* lea n(reg),%rsp */
2753 if (pc
[0] & 0x06) return FALSE
; /* rex.RX must be cleared */
2754 if (((pc
[2] >> 3) & 7) != 4) return FALSE
; /* dest reg mus be %rsp */
2755 if ((pc
[2] & 7) == 4) return FALSE
; /* no SIB byte allowed */
2756 if ((pc
[2] >> 6) == 1) /* 8-bit offset */
2761 if ((pc
[2] >> 6) == 2) /* 32-bit offset */
2770 /* now check for various pop instructions */
2774 if ((*pc
& 0xf0) == 0x40) pc
++; /* rex prefix */
2778 case 0x58: /* pop %rax/%r8 */
2779 case 0x59: /* pop %rcx/%r9 */
2780 case 0x5a: /* pop %rdx/%r10 */
2781 case 0x5b: /* pop %rbx/%r11 */
2782 case 0x5c: /* pop %rsp/%r12 */
2783 case 0x5d: /* pop %rbp/%r13 */
2784 case 0x5e: /* pop %rsi/%r14 */
2785 case 0x5f: /* pop %rdi/%r15 */
2788 case 0xc2: /* ret $nn */
2789 case 0xc3: /* ret */
2791 case 0xe9: /* jmp nnnn */
2792 pc
+= 5 + *(LONG
*)(pc
+ 1);
2793 if (pc
- (BYTE
*)base
>= function
->BeginAddress
&& pc
- (BYTE
*)base
< function
->EndAddress
)
2796 case 0xeb: /* jmp n */
2797 pc
+= 2 + (signed char)pc
[1];
2798 if (pc
- (BYTE
*)base
>= function
->BeginAddress
&& pc
- (BYTE
*)base
< function
->EndAddress
)
2801 case 0xf3: /* rep; ret (for amd64 prediction bug) */
2802 return pc
[1] == 0xc3;
2808 /* execute a function epilog, which must have been validated with is_inside_epilog() */
2809 static void interpret_epilog( BYTE
*pc
, CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
)
2815 if ((*pc
& 0xf0) == 0x40) rex
= *pc
++ & 0x0f; /* rex prefix */
2819 case 0x58: /* pop %rax/r8 */
2820 case 0x59: /* pop %rcx/r9 */
2821 case 0x5a: /* pop %rdx/r10 */
2822 case 0x5b: /* pop %rbx/r11 */
2823 case 0x5c: /* pop %rsp/r12 */
2824 case 0x5d: /* pop %rbp/r13 */
2825 case 0x5e: /* pop %rsi/r14 */
2826 case 0x5f: /* pop %rdi/r15 */
2827 set_int_reg( context
, ctx_ptr
, *pc
- 0x58 + (rex
& 1) * 8, *(ULONG64
*)context
->Rsp
);
2828 context
->Rsp
+= sizeof(ULONG64
);
2831 case 0x81: /* add $nnnn,%rsp */
2832 context
->Rsp
+= *(LONG
*)(pc
+ 2);
2833 pc
+= 2 + sizeof(LONG
);
2835 case 0x83: /* add $n,%rsp */
2836 context
->Rsp
+= (signed char)pc
[2];
2840 if ((pc
[1] >> 6) == 1) /* lea n(reg),%rsp */
2842 context
->Rsp
= get_int_reg( context
, (pc
[1] & 7) + (rex
& 1) * 8 ) + (signed char)pc
[2];
2845 else /* lea nnnn(reg),%rsp */
2847 context
->Rsp
= get_int_reg( context
, (pc
[1] & 7) + (rex
& 1) * 8 ) + *(LONG
*)(pc
+ 2);
2848 pc
+= 2 + sizeof(LONG
);
2851 case 0xc2: /* ret $nn */
2852 context
->Rip
= *(ULONG64
*)context
->Rsp
;
2853 context
->Rsp
+= sizeof(ULONG64
) + *(WORD
*)(pc
+ 1);
2855 case 0xc3: /* ret */
2856 case 0xf3: /* rep; ret */
2857 context
->Rip
= *(ULONG64
*)context
->Rsp
;
2858 context
->Rsp
+= sizeof(ULONG64
);
2860 case 0xe9: /* jmp nnnn */
2861 pc
+= 5 + *(LONG
*)(pc
+ 1);
2863 case 0xeb: /* jmp n */
2864 pc
+= 2 + (signed char)pc
[1];
2871 /**********************************************************************
2872 * RtlVirtualUnwind (NTDLL.@)
2874 PVOID WINAPI
RtlVirtualUnwind( ULONG type
, ULONG64 base
, ULONG64 pc
,
2875 RUNTIME_FUNCTION
*function
, CONTEXT
*context
,
2876 PVOID
*data
, ULONG64
*frame_ret
,
2877 KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
)
2879 union handler_data
*handler_data
;
2881 struct UNWIND_INFO
*info
;
2882 unsigned int i
, prolog_offset
;
2884 TRACE( "type %x rip %lx rsp %lx\n", type
, pc
, context
->Rsp
);
2885 if (TRACE_ON(seh
)) dump_unwind_info( base
, function
);
2887 frame
= *frame_ret
= context
->Rsp
;
2890 info
= (struct UNWIND_INFO
*)((char *)base
+ function
->UnwindData
);
2891 handler_data
= (union handler_data
*)&info
->opcodes
[(info
->count
+ 1) & ~1];
2893 if (info
->version
!= 1)
2895 FIXME( "unknown unwind info version %u at %p\n", info
->version
, info
);
2899 if (info
->frame_reg
)
2900 frame
= get_int_reg( context
, info
->frame_reg
) - info
->frame_offset
* 16;
2902 /* check if in prolog */
2903 if (pc
>= base
+ function
->BeginAddress
&& pc
< base
+ function
->BeginAddress
+ info
->prolog
)
2905 prolog_offset
= pc
- base
- function
->BeginAddress
;
2910 if (is_inside_epilog( (BYTE
*)pc
, base
, function
))
2912 interpret_epilog( (BYTE
*)pc
, context
, ctx_ptr
);
2918 for (i
= 0; i
< info
->count
; i
+= get_opcode_size(info
->opcodes
[i
]))
2920 if (prolog_offset
< info
->opcodes
[i
].offset
) continue; /* skip it */
2922 switch (info
->opcodes
[i
].code
)
2924 case UWOP_PUSH_NONVOL
: /* pushq %reg */
2925 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(ULONG64
*)context
->Rsp
);
2926 context
->Rsp
+= sizeof(ULONG64
);
2928 case UWOP_ALLOC_LARGE
: /* subq $nn,%rsp */
2929 if (info
->opcodes
[i
].info
) context
->Rsp
+= *(DWORD
*)&info
->opcodes
[i
+1];
2930 else context
->Rsp
+= *(USHORT
*)&info
->opcodes
[i
+1] * 8;
2932 case UWOP_ALLOC_SMALL
: /* subq $n,%rsp */
2933 context
->Rsp
+= (info
->opcodes
[i
].info
+ 1) * 8;
2935 case UWOP_SET_FPREG
: /* leaq nn(%rsp),%framereg */
2936 context
->Rsp
= *frame_ret
= frame
;
2938 case UWOP_SAVE_NONVOL
: /* movq %reg,n(%rsp) */
2939 off
= frame
+ *(USHORT
*)&info
->opcodes
[i
+1] * 8;
2940 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(ULONG64
*)off
);
2942 case UWOP_SAVE_NONVOL_FAR
: /* movq %reg,nn(%rsp) */
2943 off
= frame
+ *(DWORD
*)&info
->opcodes
[i
+1];
2944 set_int_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(ULONG64
*)off
);
2946 case UWOP_SAVE_XMM128
: /* movaps %xmmreg,n(%rsp) */
2947 off
= frame
+ *(USHORT
*)&info
->opcodes
[i
+1] * 16;
2948 set_float_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(M128A
*)off
);
2950 case UWOP_SAVE_XMM128_FAR
: /* movaps %xmmreg,nn(%rsp) */
2951 off
= frame
+ *(DWORD
*)&info
->opcodes
[i
+1];
2952 set_float_reg( context
, ctx_ptr
, info
->opcodes
[i
].info
, *(M128A
*)off
);
2954 case UWOP_PUSH_MACHFRAME
:
2955 FIXME( "PUSH_MACHFRAME %u\n", info
->opcodes
[i
].info
);
2958 FIXME( "unknown code %u\n", info
->opcodes
[i
].code
);
2963 if (!(info
->flags
& UNW_FLAG_CHAININFO
)) break;
2964 function
= &handler_data
->chain
; /* restart with the chained info */
2967 /* now pop return address */
2968 context
->Rip
= *(ULONG64
*)context
->Rsp
;
2969 context
->Rsp
+= sizeof(ULONG64
);
2971 if (!(info
->flags
& type
)) return NULL
; /* no matching handler */
2972 if (prolog_offset
!= ~0) return NULL
; /* inside prolog */
2974 *data
= &handler_data
->handler
+ 1;
2975 return (char *)base
+ handler_data
->handler
;
2979 /**********************************************************************
2980 * call_unwind_handler
2982 * Call a single unwind handler.
2983 * FIXME: Handle nested exceptions.
2985 static void call_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
)
2989 dispatch
->ControlPc
= dispatch
->ContextRecord
->Rip
;
2991 TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
2992 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
2993 res
= dispatch
->LanguageHandler( rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
2994 TRACE( "handler %p returned %x\n", dispatch
->LanguageHandler
, res
);
2998 case ExceptionContinueSearch
:
3000 case ExceptionCollidedUnwind
:
3001 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
3004 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
3010 /**********************************************************************
3011 * call_teb_unwind_handler
3013 * Call a single unwind handler from the TEB chain.
3014 * FIXME: Handle nested exceptions.
3016 static void call_teb_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
,
3017 EXCEPTION_REGISTRATION_RECORD
*teb_frame
)
3019 EXCEPTION_REGISTRATION_RECORD
*dispatcher
;
3022 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
3023 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
3024 res
= teb_frame
->Handler( rec
, teb_frame
, dispatch
->ContextRecord
, &dispatcher
);
3025 TRACE( "handler at %p returned %u\n", teb_frame
->Handler
, res
);
3029 case ExceptionContinueSearch
:
3031 case ExceptionCollidedUnwind
:
3032 FIXME( "ExceptionCollidedUnwind not supported yet\n" );
3035 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
3041 /*******************************************************************
3042 * RtlUnwindEx (NTDLL.@)
3044 void WINAPI
RtlUnwindEx( PVOID end_frame
, PVOID target_ip
, EXCEPTION_RECORD
*rec
,
3045 PVOID retval
, CONTEXT
*context
, UNWIND_HISTORY_TABLE
*table
)
3047 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
3048 EXCEPTION_RECORD record
;
3049 DISPATCHER_CONTEXT dispatch
;
3050 CONTEXT new_context
;
3055 RtlCaptureContext( context
);
3056 new_context
= *context
;
3058 /* build an exception record, if we do not have one */
3061 record
.ExceptionCode
= STATUS_UNWIND
;
3062 record
.ExceptionFlags
= 0;
3063 record
.ExceptionRecord
= NULL
;
3064 record
.ExceptionAddress
= (void *)context
->Rip
;
3065 record
.NumberParameters
= 0;
3069 rec
->ExceptionFlags
|= EH_UNWINDING
| (end_frame
? 0 : EH_EXIT_UNWIND
);
3071 TRACE( "code=%x flags=%x end_frame=%p target_ip=%p rip=%016lx\n",
3072 rec
->ExceptionCode
, rec
->ExceptionFlags
, end_frame
, target_ip
, context
->Rip
);
3073 for (i
= 0; i
< min( EXCEPTION_MAXIMUM_PARAMETERS
, rec
->NumberParameters
); i
++)
3074 TRACE( " info[%d]=%016lx\n", i
, rec
->ExceptionInformation
[i
] );
3075 TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
3076 context
->Rax
, context
->Rbx
, context
->Rcx
, context
->Rdx
);
3077 TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
3078 context
->Rsi
, context
->Rdi
, context
->Rbp
, context
->Rsp
);
3079 TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
3080 context
->R8
, context
->R9
, context
->R10
, context
->R11
);
3081 TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
3082 context
->R12
, context
->R13
, context
->R14
, context
->R15
);
3084 dispatch
.EstablisherFrame
= context
->Rsp
;
3085 dispatch
.TargetIp
= (ULONG64
)target_ip
;
3086 dispatch
.ContextRecord
= context
;
3087 dispatch
.HistoryTable
= table
;
3091 /* FIXME: should use the history table to make things faster */
3093 dispatch
.ImageBase
= 0;
3094 dispatch
.ScopeIndex
= 0; /* FIXME */
3096 /* first look for PE exception information */
3098 if ((dispatch
.FunctionEntry
= lookup_function_info( context
->Rip
, &dispatch
.ImageBase
, &module
)))
3100 dispatch
.LanguageHandler
= RtlVirtualUnwind( UNW_FLAG_UHANDLER
, dispatch
.ImageBase
,
3101 context
->Rip
, dispatch
.FunctionEntry
,
3102 &new_context
, &dispatch
.HandlerData
,
3103 &dispatch
.EstablisherFrame
, NULL
);
3107 /* then look for host system exception information */
3109 if (!module
|| (module
->Flags
& LDR_WINE_INTERNAL
))
3111 struct dwarf_eh_bases bases
;
3112 const struct dwarf_fde
*fde
= _Unwind_Find_FDE( (void *)(context
->Rip
- 1), &bases
);
3116 dispatch
.FunctionEntry
= NULL
;
3117 status
= dwarf_virtual_unwind( context
->Rip
, &dispatch
.EstablisherFrame
, &new_context
, fde
,
3118 &bases
, &dispatch
.LanguageHandler
, &dispatch
.HandlerData
);
3119 if (status
!= STATUS_SUCCESS
) raise_status( status
, rec
);
3120 if (dispatch
.LanguageHandler
&& !module
)
3122 FIXME( "calling personality routine in system library not supported yet\n" );
3123 dispatch
.LanguageHandler
= NULL
;
3128 else WARN( "exception data not found in %s\n", debugstr_w(module
->BaseDllName
.Buffer
) );
3130 /* no exception information, treat as a leaf function */
3132 new_context
.Rip
= *(ULONG64
*)context
->Rsp
;
3133 new_context
.Rsp
= context
->Rsp
+ sizeof(ULONG64
);
3134 dispatch
.EstablisherFrame
= new_context
.Rsp
;
3135 dispatch
.LanguageHandler
= NULL
;
3138 if (!dispatch
.EstablisherFrame
) break;
3140 if (is_inside_signal_stack( (void *)dispatch
.EstablisherFrame
))
3142 TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch
.EstablisherFrame
,
3143 get_signal_stack(), (char *)get_signal_stack() + signal_stack_size
);
3144 *context
= new_context
;
3148 if ((dispatch
.EstablisherFrame
& 7) ||
3149 dispatch
.EstablisherFrame
< (ULONG64
)NtCurrentTeb()->Tib
.StackLimit
||
3150 dispatch
.EstablisherFrame
> (ULONG64
)NtCurrentTeb()->Tib
.StackBase
)
3152 ERR( "invalid frame %lx (%p-%p)\n", dispatch
.EstablisherFrame
,
3153 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
3154 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
3158 if (dispatch
.LanguageHandler
)
3160 if (end_frame
&& (dispatch
.EstablisherFrame
> (ULONG64
)end_frame
))
3162 ERR( "invalid end frame %lx/%p\n", dispatch
.EstablisherFrame
, end_frame
);
3163 raise_status( STATUS_INVALID_UNWIND_TARGET
, rec
);
3165 if (dispatch
.EstablisherFrame
== (ULONG64
)end_frame
) rec
->ExceptionFlags
|= EH_TARGET_UNWIND
;
3166 call_unwind_handler( rec
, &dispatch
);
3168 else /* hack: call builtin handlers registered in the tib list */
3170 while ((ULONG64
)teb_frame
< new_context
.Rsp
&& (ULONG64
)teb_frame
< (ULONG64
)end_frame
)
3172 TRACE( "found builtin frame %p handler %p\n", teb_frame
, teb_frame
->Handler
);
3173 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
3174 call_teb_unwind_handler( rec
, &dispatch
, teb_frame
);
3175 teb_frame
= __wine_pop_frame( teb_frame
);
3177 if ((ULONG64
)teb_frame
== (ULONG64
)end_frame
&& (ULONG64
)end_frame
< new_context
.Rsp
) break;
3178 dispatch
.EstablisherFrame
= new_context
.Rsp
;
3181 if (context
->Rsp
== (ULONG64
)end_frame
) break;
3182 *context
= new_context
;
3185 if (rec
->ExceptionCode
== STATUS_LONGJUMP
&& rec
->NumberParameters
>= 1)
3187 struct MSVCRT_JUMP_BUFFER
*jmp
= (struct MSVCRT_JUMP_BUFFER
*)rec
->ExceptionInformation
[0];
3188 context
->Rbx
= jmp
->Rbx
;
3189 context
->Rsp
= jmp
->Rsp
;
3190 context
->Rbp
= jmp
->Rbp
;
3191 context
->Rsi
= jmp
->Rsi
;
3192 context
->Rdi
= jmp
->Rdi
;
3193 context
->R12
= jmp
->R12
;
3194 context
->R13
= jmp
->R13
;
3195 context
->R14
= jmp
->R14
;
3196 context
->R15
= jmp
->R15
;
3197 context
->Rip
= jmp
->Rip
;
3198 context
->u
.s
.Xmm6
= jmp
->Xmm6
;
3199 context
->u
.s
.Xmm7
= jmp
->Xmm7
;
3200 context
->u
.s
.Xmm8
= jmp
->Xmm8
;
3201 context
->u
.s
.Xmm9
= jmp
->Xmm9
;
3202 context
->u
.s
.Xmm10
= jmp
->Xmm10
;
3203 context
->u
.s
.Xmm11
= jmp
->Xmm11
;
3204 context
->u
.s
.Xmm12
= jmp
->Xmm12
;
3205 context
->u
.s
.Xmm13
= jmp
->Xmm13
;
3206 context
->u
.s
.Xmm14
= jmp
->Xmm14
;
3207 context
->u
.s
.Xmm15
= jmp
->Xmm15
;
3209 else if (rec
->ExceptionCode
== STATUS_UNWIND_CONSOLIDATE
&& rec
->NumberParameters
>= 1)
3211 PVOID (CALLBACK
*consolidate
)(EXCEPTION_RECORD
*) = (void *)rec
->ExceptionInformation
[0];
3212 TRACE( "calling consolidate callback %p\n", consolidate
);
3213 target_ip
= consolidate( rec
);
3215 context
->Rax
= (ULONG64
)retval
;
3216 context
->Rip
= (ULONG64
)target_ip
;
3217 TRACE( "returning to %lx stack %lx\n", context
->Rip
, context
->Rsp
);
3218 set_cpu_context( context
);
3222 /*******************************************************************
3223 * RtlUnwind (NTDLL.@)
3225 void WINAPI
RtlUnwind( void *frame
, void *target_ip
, EXCEPTION_RECORD
*rec
, void *retval
)
3228 RtlUnwindEx( frame
, target_ip
, rec
, retval
, &context
, NULL
);
3232 /*******************************************************************
3233 * _local_unwind (NTDLL.@)
3235 void WINAPI
_local_unwind( void *frame
, void *target_ip
)
3238 RtlUnwindEx( frame
, target_ip
, NULL
, NULL
, &context
, NULL
);
3242 /*******************************************************************
3243 * __C_specific_handler (NTDLL.@)
3245 EXCEPTION_DISPOSITION WINAPI
__C_specific_handler( EXCEPTION_RECORD
*rec
,
3248 struct _DISPATCHER_CONTEXT
*dispatch
)
3250 SCOPE_TABLE
*table
= dispatch
->HandlerData
;
3253 TRACE( "%p %lx %p %p\n", rec
, frame
, context
, dispatch
);
3254 if (TRACE_ON(seh
)) dump_scope_table( dispatch
->ImageBase
, table
);
3256 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
)) /* FIXME */
3257 return ExceptionContinueSearch
;
3259 for (i
= 0; i
< table
->Count
; i
++)
3261 if (context
->Rip
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
3262 context
->Rip
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
3264 if (!table
->ScopeRecord
[i
].JumpTarget
) continue;
3265 if (table
->ScopeRecord
[i
].HandlerAddress
!= EXCEPTION_EXECUTE_HANDLER
)
3267 EXCEPTION_POINTERS ptrs
;
3268 PC_LANGUAGE_EXCEPTION_HANDLER filter
;
3270 filter
= (PC_LANGUAGE_EXCEPTION_HANDLER
)(dispatch
->ImageBase
+ table
->ScopeRecord
[i
].HandlerAddress
);
3271 ptrs
.ExceptionRecord
= rec
;
3272 ptrs
.ContextRecord
= context
;
3273 TRACE( "calling filter %p ptrs %p frame %lx\n", filter
, &ptrs
, frame
);
3274 switch (filter( &ptrs
, frame
))
3276 case EXCEPTION_EXECUTE_HANDLER
:
3278 case EXCEPTION_CONTINUE_SEARCH
:
3280 case EXCEPTION_CONTINUE_EXECUTION
:
3281 return ExceptionContinueExecution
;
3284 TRACE( "unwinding to target %lx\n", dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
);
3285 RtlUnwindEx( (void *)frame
, (char *)dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
,
3286 rec
, 0, context
, dispatch
->HistoryTable
);
3289 return ExceptionContinueSearch
;
3293 /*******************************************************************
3294 * NtRaiseException (NTDLL.@)
3296 NTSTATUS WINAPI
NtRaiseException( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, BOOL first_chance
)
3298 NTSTATUS status
= raise_exception( rec
, context
, first_chance
);
3299 if (status
== STATUS_SUCCESS
) NtSetContextThread( GetCurrentThread(), context
);
3304 /***********************************************************************
3305 * RtlRaiseException (NTDLL.@)
3307 void WINAPI
__regs_RtlRaiseException( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
3311 rec
->ExceptionAddress
= (void *)context
->Rip
;
3312 status
= raise_exception( rec
, context
, TRUE
);
3313 if (status
!= STATUS_SUCCESS
) raise_status( status
, rec
);
3315 __ASM_GLOBAL_FUNC( RtlRaiseException
,
3316 "movq %rcx,8(%rsp)\n\t"
3317 "sub $0x4f8,%rsp\n\t"
3318 __ASM_CFI(".cfi_adjust_cfa_offset 0x4f8\n\t")
3319 "leaq 0x20(%rsp),%rcx\n\t"
3320 "call " __ASM_NAME("RtlCaptureContext") "\n\t"
3321 "leaq 0x20(%rsp),%rdx\n\t" /* context pointer */
3322 "movq 0x4f8(%rsp),%rax\n\t" /* return address */
3323 "movq %rax,0xf8(%rdx)\n\t" /* context->Rip */
3324 "leaq 0x500(%rsp),%rax\n\t" /* orig stack pointer */
3325 "movq %rax,0x98(%rdx)\n\t" /* context->Rsp */
3326 "movq (%rax),%rcx\n\t" /* original first parameter */
3327 "movq %rcx,0x80(%rdx)\n\t" /* context->Rcx */
3328 "call " __ASM_NAME("__regs_RtlRaiseException") "\n\t"
3329 "leaq 0x20(%rsp),%rdi\n\t" /* context pointer */
3330 "call " __ASM_NAME("set_cpu_context") /* does not return */ );
3333 /*************************************************************************
3334 * RtlCaptureStackBackTrace (NTDLL.@)
3336 USHORT WINAPI
RtlCaptureStackBackTrace( ULONG skip
, ULONG count
, PVOID
*buffer
, ULONG
*hash
)
3338 FIXME( "(%d, %d, %p, %p) stub!\n", skip
, count
, buffer
, hash
);
3343 /***********************************************************************
3346 void call_thread_func( LPTHREAD_START_ROUTINE entry
, void *arg
, void *frame
)
3348 ntdll_get_thread_data()->exit_frame
= frame
;
3351 RtlExitUserThread( entry( arg
));
3353 __EXCEPT(unhandled_exception_filter
)
3355 NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
3358 abort(); /* should not be reached */
3361 extern void DECLSPEC_NORETURN
call_thread_entry_point( LPTHREAD_START_ROUTINE entry
, void *arg
);
3362 __ASM_GLOBAL_FUNC( call_thread_entry_point
,
3364 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3365 "movq %rbp,48(%rsp)\n\t"
3366 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3367 "movq %rbx,40(%rsp)\n\t"
3368 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3369 "movq %r12,32(%rsp)\n\t"
3370 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3371 "movq %r13,24(%rsp)\n\t"
3372 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3373 "movq %r14,16(%rsp)\n\t"
3374 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3375 "movq %r15,8(%rsp)\n\t"
3376 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3377 "movq %rsp,%rdx\n\t"
3378 "call " __ASM_NAME("call_thread_func") );
3380 extern void DECLSPEC_NORETURN
call_thread_exit_func( int status
, void (*func
)(int), void *frame
);
3381 __ASM_GLOBAL_FUNC( call_thread_exit_func
,
3382 "movq %rdx,%rsp\n\t"
3383 __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t")
3384 __ASM_CFI(".cfi_rel_offset %rbp,48\n\t")
3385 __ASM_CFI(".cfi_rel_offset %rbx,40\n\t")
3386 __ASM_CFI(".cfi_rel_offset %r12,32\n\t")
3387 __ASM_CFI(".cfi_rel_offset %r13,24\n\t")
3388 __ASM_CFI(".cfi_rel_offset %r14,16\n\t")
3389 __ASM_CFI(".cfi_rel_offset %r15,8\n\t")
3392 /***********************************************************************
3393 * RtlExitUserThread (NTDLL.@)
3395 void WINAPI
RtlExitUserThread( ULONG status
)
3397 if (!ntdll_get_thread_data()->exit_frame
) exit_thread( status
);
3398 call_thread_exit_func( status
, exit_thread
, ntdll_get_thread_data()->exit_frame
);
3401 /***********************************************************************
3404 void abort_thread( int status
)
3406 if (!ntdll_get_thread_data()->exit_frame
) terminate_thread( status
);
3407 call_thread_exit_func( status
, terminate_thread
, ntdll_get_thread_data()->exit_frame
);
3410 /**********************************************************************
3411 * __wine_enter_vm86 (NTDLL.@)
3413 void __wine_enter_vm86( CONTEXT
*context
)
3415 MESSAGE("vm86 mode not supported on this platform\n");
3418 /**********************************************************************
3419 * DbgBreakPoint (NTDLL.@)
3421 __ASM_STDCALL_FUNC( DbgBreakPoint
, 0, "int $3; ret")
3423 /**********************************************************************
3424 * DbgUserBreakPoint (NTDLL.@)
3426 __ASM_STDCALL_FUNC( DbgUserBreakPoint
, 0, "int $3; ret")
3428 #endif /* __x86_64__ */