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Commit dd93d255 authored by Alexandre Julliard's avatar Alexandre Julliard
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Improved exception handling.

Based on the work of Sergey Turchanov <turchanov@usa.net>.
parent 4cd07769
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Showing with 127 additions and 295 deletions
dlls/ntdll/Makefile.in
View file @ dd93d255
......@@ -6,6 +6,7 @@ VPATH = @srcdir@
MODULE = ntdll
C_SRCS = \
exception.c \
file.c \
nt.c \
om.c \
......
dlls/ntdll/rtl.c
View file @ dd93d255
......@@ -283,15 +283,7 @@ void __cdecl DbgPrint(LPCSTR fmt,LPVOID args) {
MSG("DbgPrint says: %s",buf);
/* hmm, raise exception? */
}
DWORD NtRaiseException ( DWORD dwExceptionCode, DWORD dwExceptionFlags, DWORD nNumberOfArguments,CONST ULONG_PTR *lpArguments)
{ FIXME(ntdll,"0x%08lx 0x%08lx 0x%08lx %p\n", dwExceptionCode, dwExceptionFlags, nNumberOfArguments, lpArguments);
return 0;
}
DWORD RtlRaiseException ( DWORD x)
{ FIXME(ntdll, "0x%08lx\n", x);
return 0;
}
/******************************************************************************
* RtlAcquirePebLock [NTDLL]
*/
......
include/debugdefs.h
View file @ dd93d255
......@@ -122,50 +122,51 @@ int dbch_resource = 110;
int dbch_scroll = 111;
int dbch_security = 112;
int dbch_segment = 113;
int dbch_selector = 114;
int dbch_sem = 115;
int dbch_sendmsg = 116;
int dbch_server = 117;
int dbch_shell = 118;
int dbch_shm = 119;
int dbch_snoop = 120;
int dbch_sound = 121;
int dbch_static = 122;
int dbch_statusbar = 123;
int dbch_storage = 124;
int dbch_stress = 125;
int dbch_string = 126;
int dbch_syscolor = 127;
int dbch_system = 128;
int dbch_tab = 129;
int dbch_tapi = 130;
int dbch_task = 131;
int dbch_text = 132;
int dbch_thread = 133;
int dbch_thunk = 134;
int dbch_timer = 135;
int dbch_toolbar = 136;
int dbch_toolhelp = 137;
int dbch_tooltips = 138;
int dbch_trackbar = 139;
int dbch_treeview = 140;
int dbch_ttydrv = 141;
int dbch_tweak = 142;
int dbch_updown = 143;
int dbch_ver = 144;
int dbch_virtual = 145;
int dbch_vxd = 146;
int dbch_wave = 147;
int dbch_win = 148;
int dbch_win16drv = 149;
int dbch_win32 = 150;
int dbch_wing = 151;
int dbch_winsock = 152;
int dbch_wnet = 153;
int dbch_x11 = 154;
int dbch_x11drv = 155;
int dbch_seh = 114;
int dbch_selector = 115;
int dbch_sem = 116;
int dbch_sendmsg = 117;
int dbch_server = 118;
int dbch_shell = 119;
int dbch_shm = 120;
int dbch_snoop = 121;
int dbch_sound = 122;
int dbch_static = 123;
int dbch_statusbar = 124;
int dbch_storage = 125;
int dbch_stress = 126;
int dbch_string = 127;
int dbch_syscolor = 128;
int dbch_system = 129;
int dbch_tab = 130;
int dbch_tapi = 131;
int dbch_task = 132;
int dbch_text = 133;
int dbch_thread = 134;
int dbch_thunk = 135;
int dbch_timer = 136;
int dbch_toolbar = 137;
int dbch_toolhelp = 138;
int dbch_tooltips = 139;
int dbch_trackbar = 140;
int dbch_treeview = 141;
int dbch_ttydrv = 142;
int dbch_tweak = 143;
int dbch_updown = 144;
int dbch_ver = 145;
int dbch_virtual = 146;
int dbch_vxd = 147;
int dbch_wave = 148;
int dbch_win = 149;
int dbch_win16drv = 150;
int dbch_win32 = 151;
int dbch_wing = 152;
int dbch_winsock = 153;
int dbch_wnet = 154;
int dbch_x11 = 155;
int dbch_x11drv = 156;
#define DEBUG_CHANNEL_COUNT 156
#define DEBUG_CHANNEL_COUNT 157
char __debug_msg_enabled[DEBUG_CHANNEL_COUNT][DEBUG_CLASS_COUNT] = {
{1, 1, 0, 0},
......@@ -323,6 +324,7 @@ char __debug_msg_enabled[DEBUG_CHANNEL_COUNT][DEBUG_CLASS_COUNT] = {
{1, 1, 0, 0},
{1, 1, 0, 0},
{1, 1, 0, 0},
{1, 1, 0, 0},
{1, 1, 0, 0}
};
......@@ -441,6 +443,7 @@ const char * const debug_ch_name[DEBUG_CHANNEL_COUNT] = {
"scroll",
"security",
"segment",
"seh",
"selector",
"sem",
"sendmsg",
......
include/except.h
View file @ dd93d255
/*
* except.h
* Copyright (c) 1996, Onno Hovers (onno@stack.urc.tue.nl)
* Copyright (c) 1996 Onno Hovers (onno@stack.urc.tue.nl)
* Copyright (c) 1999 Alexandre Julliard
*/
#ifndef __WINE_EXCEPT_H
#define __WINE_EXCEPT_H
#include <setjmp.h>
#include "winnt.h"
#include "thread.h"
/*
* the function pointer to a exception handler
......@@ -18,7 +21,7 @@ struct __EXCEPTION_FRAME;
typedef DWORD (CALLBACK *PEXCEPTION_HANDLER)( PEXCEPTION_RECORD pexcrec,
struct __EXCEPTION_FRAME *pestframe,
PCONTEXT pcontext,
LPVOID pdispatcher);
struct __EXCEPTION_FRAME **pdispatcher);
/*
* The exception frame, used for registering exception handlers
......@@ -33,22 +36,20 @@ typedef struct __EXCEPTION_FRAME
} EXCEPTION_FRAME, *PEXCEPTION_FRAME;
/*
* this undocumented function is called when an exception
* handler wants all the frames to be unwound. RtlUnwind
* calls all exception handlers with the EH_UNWIND or
* EH_EXIT_UNWIND flags set in the exception record
*
* This prototype assumes RtlUnwind takes the same
* parameters as OS/2 2.0 DosUnwindException
* Disassembling RtlUnwind shows this is true, except for
* the TargetEIP parameter, which is unused. There is
* a fourth parameter, that is used as the eax in the
* context.
*/
void WINAPI RtlUnwind( PEXCEPTION_FRAME pestframe,
LPVOID unusedEIP,
PEXCEPTION_RECORD pexcrec,
DWORD contextEAX );
void WINAPI RtlUnwind(PEXCEPTION_FRAME,LPVOID,PEXCEPTION_RECORD,DWORD);
static inline EXCEPTION_FRAME *EXC_push_frame( EXCEPTION_FRAME *frame )
{
TEB * teb = NtCurrentTeb();
frame->Prev = teb->except;
teb->except = frame;
return frame;
}
static inline EXCEPTION_FRAME *EXC_pop_frame( EXCEPTION_FRAME *frame )
{
NtCurrentTeb()->except = frame->Prev;
return frame->Prev;
}
#endif /* __WINE_EXCEPT_H */
include/ntddk.h
View file @ dd93d255
......@@ -573,8 +573,8 @@ BOOLEAN WINAPI RtlFreeHeap(
* misc
*/
void __cdecl DbgPrint(LPCSTR fmt,LPVOID args);
DWORD NtRaiseException ( DWORD dwExceptionCode, DWORD dwExceptionFlags, DWORD nNumberOfArguments,CONST ULONG_PTR *lpArguments);
DWORD RtlRaiseException ( DWORD x);
DWORD WINAPI NtRaiseException(PEXCEPTION_RECORD,PCONTEXT,BOOL);
void WINAPI RtlRaiseException(PEXCEPTION_RECORD);
VOID WINAPI RtlAcquirePebLock(void);
VOID WINAPI RtlReleasePebLock(void);
DWORD WINAPI RtlAdjustPrivilege(DWORD x1,DWORD x2,DWORD x3,DWORD x4);
......
include/thread.h
View file @ dd93d255
......@@ -12,11 +12,12 @@
#include "selectors.h" /* for SET_FS */
struct _PDB;
struct __EXCEPTION_FRAME;
/* Thread exception block */
typedef struct _TEB
{
void *except; /* 00 Head of exception handling chain */
struct __EXCEPTION_FRAME *except; /* 00 Head of exception handling chain */
void *stack_top; /* 04 Top of thread stack */
void *stack_low; /* 08 Stack low-water mark */
HTASK16 htask16; /* 0c Win16 task handle */
......
include/winbase.h
View file @ dd93d255
......@@ -992,42 +992,30 @@ typedef DWORD (WINAPI *LPPROGRESS_ROUTINE)(LARGE_INTEGER, LARGE_INTEGER, LARGE_I
#define FS_CASE_IS_PRESERVED FILE_CASE_PRESERVED_NAMES
#define FS_UNICODE_STORED_ON_DISK FILE_UNICODE_ON_DISK
#define EXCEPTION_ACCESS_VIOLATION STATUS_ACCESS_VIOLATION
#define EXCEPTION_DATATYPE_MISALIGNMENT STATUS_DATATYPE_MISALIGNMENT
#define EXCEPTION_BREAKPOINT STATUS_BREAKPOINT
#define EXCEPTION_SINGLE_STEP STATUS_SINGLE_STEP
#define EXCEPTION_ARRAY_BOUNDS_EXCEEDED STATUS_ARRAY_BOUNDS_EXCEEDED
#define EXCEPTION_FLT_DENORMAL_OPERAND STATUS_FLOAT_DENORMAL_OPERAND
#define EXCEPTION_FLT_DIVIDE_BY_ZERO STATUS_FLOAT_DIVIDE_BY_ZERO
#define EXCEPTION_FLT_INEXACT_RESULT STATUS_FLOAT_INEXACT_RESULT
#define EXCEPTION_FLT_INVALID_OPERATION STATUS_FLOAT_INVALID_OPERATION
#define EXCEPTION_FLT_OVERFLOW STATUS_FLOAT_OVERFLOW
#define EXCEPTION_FLT_STACK_CHECK STATUS_FLOAT_STACK_CHECK
#define EXCEPTION_FLT_UNDERFLOW STATUS_FLOAT_UNDERFLOW
#define EXCEPTION_INT_DIVIDE_BY_ZERO STATUS_INTEGER_DIVIDE_BY_ZERO
#define EXCEPTION_INT_OVERFLOW STATUS_INTEGER_OVERFLOW
#define EXCEPTION_PRIV_INSTRUCTION STATUS_PRIVILEGED_INSTRUCTION
#define EXCEPTION_IN_PAGE_ERROR STATUS_IN_PAGE_ERROR
#define EXCEPTION_ILLEGAL_INSTRUCTION STATUS_ILLEGAL_INSTRUCTION
#define EXCEPTION_NONCONTINUABLE_EXCEPTION STATUS_NONCONTINUABLE_EXCEPTION
#define EXCEPTION_STACK_OVERFLOW STATUS_STACK_OVERFLOW
#define EXCEPTION_INVALID_DISPOSITION STATUS_INVALID_DISPOSITION
#define EXCEPTION_GUARD_PAGE STATUS_GUARD_PAGE_VIOLATION
#define EXCEPTION_INVALID_HANDLE STATUS_INVALID_HANDLE
#define CONTROL_C_EXIT STATUS_CONTROL_C_EXIT
#define STATUS_SUCCESS 0x00000000
#define STATUS_WAIT_0 0x00000000
#define STATUS_ABANDONED_WAIT_0 0x00000080
#define STATUS_USER_APC 0x000000C0
#define STATUS_TIMEOUT 0x00000102
#define STATUS_PENDING 0x00000103
#define STATUS_GUARD_PAGE_VIOLATION 0x80000001
#define STATUS_DATATYPE_MISALIGNMENT 0x80000002
#define STATUS_BREAKPOINT 0x80000003
#define STATUS_SINGLE_STEP 0x80000004
#define STATUS_BUFFER_OVERFLOW 0x80000005
#define STATUS_ACCESS_VIOLATION 0xC0000005
#define STATUS_IN_PAGE_ERROR 0xC0000006
#define STATUS_INVALID_PARAMETER 0xC000000D
#define STATUS_NO_MEMORY 0xC0000017
#define STATUS_ILLEGAL_INSTRUCTION 0xC000001D
#define STATUS_BUFFER_TOO_SMALL 0xC0000023
#define STATUS_NONCONTINUABLE_EXCEPTION 0xC0000025
#define STATUS_INVALID_DISPOSITION 0xC0000026
#define STATUS_UNKNOWN_REVISION 0xC0000058
#define STATUS_INVALID_SECURITY_DESCR 0xC0000079
#define STATUS_ARRAY_BOUNDS_EXCEEDED 0xC000008C
#define STATUS_FLOAT_DENORMAL_OPERAND 0xC000008D
#define STATUS_FLOAT_DIVIDE_BY_ZERO 0xC000008E
#define STATUS_FLOAT_INEXACT_RESULT 0xC000008F
#define STATUS_FLOAT_INVALID_OPERATION 0xC0000090
#define STATUS_FLOAT_OVERFLOW 0xC0000091
#define STATUS_FLOAT_STACK_CHECK 0xC0000092
#define STATUS_FLOAT_UNDERFLOW 0xC0000093
#define STATUS_INTEGER_DIVIDE_BY_ZERO 0xC0000094
#define STATUS_INTEGER_OVERFLOW 0xC0000095
#define STATUS_PRIVILEGED_INSTRUCTION 0xC0000096
#define STATUS_INVALID_PARAMETER_2 0xC00000F0
#define STATUS_STACK_OVERFLOW 0xC00000FD
#define STATUS_CONTROL_C_EXIT 0xC000013A
#define DUPLICATE_CLOSE_SOURCE 0x00000001
#define DUPLICATE_SAME_ACCESS 0x00000002
......@@ -1046,29 +1034,6 @@ typedef DWORD (WINAPI *LPPROGRESS_ROUTINE)(LARGE_INTEGER, LARGE_INTEGER, LARGE_I
#define THREAD_PRIORITY_TIME_CRITICAL THREAD_BASE_PRIORITY_LOWRT
#define THREAD_PRIORITY_IDLE THREAD_BASE_PRIORITY_IDLE
typedef struct
{
int type;
} wine_exception;
typedef struct
{
int pad[39];
int edi;
int esi;
int ebx;
int edx;
int ecx;
int eax;
int ebp;
int eip;
int cs;
int eflags;
int esp;
int ss;
} exception_info;
/* Could this type be considered opaque? */
typedef struct {
LPVOID DebugInfo;
......
include/winnt.h
View file @ dd93d255
......@@ -216,20 +216,32 @@ typedef HANDLE *PHANDLE;
* Exception codes
*/
#define STATUS_SUCCESS 0x00000000
#define STATUS_WAIT_0 0x00000000
#define STATUS_ABANDONED_WAIT_0 0x00000080
#define STATUS_USER_APC 0x000000C0
#define STATUS_TIMEOUT 0x00000102
#define STATUS_PENDING 0x00000103
#define STATUS_GUARD_PAGE_VIOLATION 0x80000001
#define STATUS_DATATYPE_MISALIGNMENT 0x80000002
#define STATUS_BREAKPOINT 0x80000003
#define STATUS_SINGLE_STEP 0x80000004
#define STATUS_BUFFER_OVERFLOW 0x80000005
#define STATUS_UNSUCCESSFUL 0xC0000001
#define STATUS_ACCESS_VIOLATION 0xC0000005
#define STATUS_IN_PAGE_ERROR 0xC0000006
#define STATUS_INVALID_PARAMETER 0xC000000D
#define STATUS_NO_MEMORY 0xC0000017
#define STATUS_CONFLICTING_ADDRESSES 0xC0000018
#define STATUS_ILLEGAL_INSTRUCTION 0xC000001D
#define STATUS_BUFFER_TOO_SMALL 0xC0000023
#define STATUS_NONCONTINUABLE_EXCEPTION 0xC0000025
#define STATUS_INVALID_DISPOSITION 0xC0000026
#define STATUS_UNWIND 0xC0000027
#define STATUS_BAD_STACK 0xC0000028
#define STATUS_INVALID_UNWIND_TARGET 0xC0000029
#define STATUS_UNKNOWN_REVISION 0xC0000058
#define STATUS_INVALID_SECURITY_DESCR 0xC0000079
#define STATUS_ARRAY_BOUNDS_EXCEEDED 0xC000008C
#define STATUS_FLOAT_DENORMAL_OPERAND 0xC000008D
#define STATUS_FLOAT_DIVIDE_BY_ZERO 0xC000008E
......@@ -241,33 +253,10 @@ typedef HANDLE *PHANDLE;
#define STATUS_INTEGER_DIVIDE_BY_ZERO 0xC0000094
#define STATUS_INTEGER_OVERFLOW 0xC0000095
#define STATUS_PRIVILEGED_INSTRUCTION 0xC0000096
#define STATUS_INVALID_PARAMETER_2 0xC00000F0
#define STATUS_STACK_OVERFLOW 0xC00000FD
#define STATUS_CONTROL_C_EXIT 0xC000013A
#define EXCEPTION_ACCESS_VIOLATION STATUS_ACCESS_VIOLATION
#define EXCEPTION_DATATYPE_MISALIGNMENT STATUS_DATATYPE_MISALIGNMENT
#define EXCEPTION_BREAKPOINT STATUS_BREAKPOINT
#define EXCEPTION_SINGLE_STEP STATUS_SINGLE_STEP
#define EXCEPTION_ARRAY_BOUNDS_EXCEEDED STATUS_ARRAY_BOUNDS_EXCEEDED
#define EXCEPTION_FLT_DENORMAL_OPERAND STATUS_FLOAT_DENORMAL_OPERAND
#define EXCEPTION_FLT_DIVIDE_BY_ZERO STATUS_FLOAT_DIVIDE_BY_ZERO
#define EXCEPTION_FLT_INEXACT_RESULT STATUS_FLOAT_INEXACT_RESULT
#define EXCEPTION_FLT_INVALID_OPERATION STATUS_FLOAT_INVALID_OPERATION
#define EXCEPTION_FLT_OVERFLOW STATUS_FLOAT_OVERFLOW
#define EXCEPTION_FLT_STACK_CHECK STATUS_FLOAT_STACK_CHECK
#define EXCEPTION_FLT_UNDERFLOW STATUS_FLOAT_UNDERFLOW
#define EXCEPTION_INT_DIVIDE_BY_ZERO STATUS_INTEGER_DIVIDE_BY_ZERO
#define EXCEPTION_INT_OVERFLOW STATUS_INTEGER_OVERFLOW
#define EXCEPTION_PRIV_INSTRUCTION STATUS_PRIVILEGED_INSTRUCTION
#define EXCEPTION_IN_PAGE_ERROR STATUS_IN_PAGE_ERROR
#define EXCEPTION_ILLEGAL_INSTRUCTION STATUS_ILLEGAL_INSTRUCTION
#define EXCEPTION_NONCONTINUABLE_EXCEPTION STATUS_NONCONTINUABLE_EXCEPTION
#define EXCEPTION_STACK_OVERFLOW STATUS_STACK_OVERFLOW
#define EXCEPTION_INVALID_DISPOSITION STATUS_INVALID_DISPOSITION
#define EXCEPTION_GUARD_PAGE STATUS_GUARD_PAGE_VIOLATION
#define EXCEPTION_INVALID_HANDLE STATUS_INVALID_HANDLE
#define CONTROL_C_EXIT STATUS_CONTROL_C_EXIT
#define MAXIMUM_WAIT_OBJECTS 64
#define MAXIMUM_SUSPEND_COUNT 127
......
relay32/kernel32.spec
View file @ dd93d255
......@@ -582,7 +582,7 @@ init MAIN_KernelInit
564 stdcall QueryPerformanceCounter(ptr) QueryPerformanceCounter
565 stdcall QueryPerformanceFrequency(ptr) QueryPerformanceFrequency
566 stdcall QueueUserAPC(ptr long long) QueueUserAPC
567 register RaiseException() RaiseException
567 stdcall RaiseException(long long long ptr) RaiseException
568 stdcall ReadConsoleA(long ptr long ptr ptr) ReadConsoleA
569 stdcall ReadConsoleInputA(long ptr long ptr) ReadConsoleInputA
570 stdcall ReadConsoleInputW(long ptr long ptr) ReadConsoleInputW
......
relay32/ntdll.spec
View file @ dd93d255
......@@ -180,7 +180,7 @@ type win32
172 stdcall NtQueryValueKey(long long long long long long) NtQueryValueKey
173 stub NtQueryVirtualMemory
174 stub NtQueryVolumeInformationFile
175 stdcall NtRaiseException(long long long ptr) NtRaiseException
175 register NtRaiseException() NtRaiseException
176 stub NtRaiseHardError
177 stdcall NtReadFile(long long long long long long long long long) NtReadFile
178 stub NtReadRequestData
......@@ -469,8 +469,8 @@ type win32
461 stub RtlQuerySecurityObject
462 stub RtlQueryTagHeap
463 stub RtlQueryTimeZoneInformation
464 stdcall RtlRaiseException (long) RtlRaiseException
465 stub RtlRaiseStatus
464 register RtlRaiseException() RtlRaiseException
465 stdcall RtlRaiseStatus(long) RtlRaiseStatus
466 stub RtlRandom
467 stub RtlReAllocateHeap
468 stub RtlRealPredecessor
......
win32/except.c
View file @ dd93d255
......@@ -2,6 +2,7 @@
* Win32 exception functions
*
* Copyright (c) 1996 Onno Hovers, (onno@stack.urc.tue.nl)
* Copyright (c) 1999 Alexandre Julliard
*
* Notes:
* What really happens behind the scenes of those new
......@@ -41,152 +42,31 @@
#include "except.h"
#include "stackframe.h"
DECLARE_DEBUG_CHANNEL(relay)
DECLARE_DEBUG_CHANNEL(win32)
#define TEB_EXCEPTION_FRAME(pcontext) \
((PEXCEPTION_FRAME)((TEB *)GET_SEL_BASE((pcontext)->SegFs))->except)
/*******************************************************************
* RtlUnwind (KERNEL32.443)
*
* This function is undocumented. This is the general idea of
* RtlUnwind, though. Note that error handling is not yet implemented.
*
* The real prototype is:
* void WINAPI EXC_RtlUnwind( PEXCEPTION_FRAME pEndFrame, LPVOID unusedEip,
* PEXCEPTION_RECORD pRecord, DWORD returnEax );
*/
REGS_ENTRYPOINT(RtlUnwind)
{
EXCEPTION_RECORD record;
DWORD dispatch;
int retval;
PEXCEPTION_FRAME pEndFrame;
PEXCEPTION_RECORD pRecord;
/* get the arguments from the stack */
DWORD ret = STACK32_POP(context); /* return addr */
pEndFrame = (PEXCEPTION_FRAME)STACK32_POP(context);
(void)STACK32_POP(context); /* unused arg */
pRecord = (PEXCEPTION_RECORD)STACK32_POP(context);
EAX_reg(context) = STACK32_POP(context);
STACK32_PUSH(context,ret); /* restore return addr */
/* build an exception record, if we do not have one */
if(!pRecord)
{
record.ExceptionCode = STATUS_INVALID_DISPOSITION;
record.ExceptionFlags = 0;
record.ExceptionRecord = NULL;
record.ExceptionAddress = (LPVOID)EIP_reg(context);
record.NumberParameters = 0;
pRecord = &record;
}
if(pEndFrame)
pRecord->ExceptionFlags|=EH_UNWINDING;
else
pRecord->ExceptionFlags|=EH_UNWINDING | EH_EXIT_UNWIND;
/* get chain of exception frames */
while ((TEB_EXCEPTION_FRAME(context) != NULL) &&
(TEB_EXCEPTION_FRAME(context) != ((void *)0xffffffff)) &&
(TEB_EXCEPTION_FRAME(context) != pEndFrame))
{
TRACE_(win32)("calling exception handler at 0x%x\n",
(int)TEB_EXCEPTION_FRAME(context)->Handler );
dispatch=0;
retval = TEB_EXCEPTION_FRAME(context)->Handler( pRecord,
TEB_EXCEPTION_FRAME(context),
context, &dispatch);
TRACE_(win32)("exception handler returns 0x%x, dispatch=0x%x\n",
retval, (int) dispatch);
if ( (retval == ExceptionCollidedUnwind) &&
(TEB_EXCEPTION_FRAME(context) != (LPVOID)dispatch)
)
TEB_EXCEPTION_FRAME(context) = (LPVOID)dispatch;
else if ( (TEB_EXCEPTION_FRAME(context) != pEndFrame) &&
(TEB_EXCEPTION_FRAME(context) != TEB_EXCEPTION_FRAME(context)->Prev)
)
TEB_EXCEPTION_FRAME(context) = TEB_EXCEPTION_FRAME(context)->Prev;
else
break;
}
}
DEFAULT_DEBUG_CHANNEL(seh)
/*******************************************************************
* RaiseException (KERNEL32.418)
*
* The real prototype is:
* void WINAPI EXC_RaiseException(DWORD dwExceptionCode,
* DWORD dwExceptionFlags,
* DWORD cArguments,
* const LPDWORD lpArguments );
*/
REGS_ENTRYPOINT(RaiseException)
void WINAPI RaiseException( DWORD code, DWORD flags, DWORD nbargs, const LPDWORD args )
{
PEXCEPTION_FRAME pframe;
EXCEPTION_RECORD record;
DWORD dispatch; /* is this used in raising exceptions ?? */
int retval;
int i;
/* Get the arguments from the stack */
DWORD ret = STACK32_POP(context); /* return addr */
DWORD dwExceptionCode = STACK32_POP(context);
DWORD dwExceptionFlags = STACK32_POP(context);
DWORD cArguments = STACK32_POP(context);
const LPDWORD lpArguments = (LPDWORD)STACK32_POP(context);
STACK32_PUSH(context,ret); /* Restore the return address */
EXCEPTION_RECORD record;
/* compose an exception record */
/* Compose an exception record */
record.ExceptionCode = dwExceptionCode;
record.ExceptionFlags = dwExceptionFlags;
record.ExceptionRecord = NULL;
record.NumberParameters = cArguments;
record.ExceptionAddress = (LPVOID)EIP_reg(context);
if (lpArguments) for( i = 0; i < cArguments; i++)
record.ExceptionInformation[i] = lpArguments[i];
/* get chain of exception frames */
retval = ExceptionContinueSearch;
pframe = TEB_EXCEPTION_FRAME( context );
while((pframe!=NULL)&&(pframe!=((void *)0xFFFFFFFF)))
record.ExceptionCode = code;
record.ExceptionFlags = flags & EH_NONCONTINUABLE;
record.ExceptionRecord = NULL;
record.ExceptionAddress = RaiseException;
if (nbargs && args)
{
PEXCEPTION_FRAME prevframe;
TRACE_(win32)("calling exception handler at 0x%x\n",
(int) pframe->Handler);
dispatch=0;
TRACE_(relay)("(except=%p,record=%p,frame=%p,context=%p,dispatch=%p)\n",
pframe->Handler, &record, pframe, context, &dispatch );
prevframe = pframe->Prev;
retval=pframe->Handler(&record,pframe,context,&dispatch);
TRACE_(win32)("exception handler returns 0x%x, dispatch=0x%x\n",
retval, (int) dispatch);
if(retval==ExceptionContinueExecution)
break;
pframe=prevframe;
}
if (nbargs > EXCEPTION_MAXIMUM_PARAMETERS) nbargs = EXCEPTION_MAXIMUM_PARAMETERS;
record.NumberParameters = nbargs;
memcpy( record.ExceptionInformation, args, nbargs * sizeof(*args) );
}
else record.NumberParameters = 0;
if (retval!=ExceptionContinueExecution)
{
/* FIXME: what should we do here? */
TRACE_(win32)("no handler wanted to handle the exception, exiting\n");
ExitProcess(dwExceptionCode); /* what status should be used here ? */
}
RtlRaiseException( &record );
}
......
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