msvcrt: Move more i386-specific exception code to except_i386.c.
This commit is contained in:
Alexandre Julliard
parent
aba6423b83
commit
89b2dd08ff
|
|
@ -44,59 +44,6 @@ typedef struct __exception
|
||||||
int do_free; /* Whether to free 'name' in our dtor */
|
int do_free; /* Whether to free 'name' in our dtor */
|
||||||
} exception;
|
} exception;
|
||||||
|
|
||||||
/* the exception frame used by CxxFrameHandler */
|
|
||||||
typedef struct __cxx_exception_frame
|
|
||||||
{
|
|
||||||
EXCEPTION_REGISTRATION_RECORD frame; /* the standard exception frame */
|
|
||||||
int trylevel;
|
|
||||||
DWORD ebp;
|
|
||||||
} cxx_exception_frame;
|
|
||||||
|
|
||||||
/* info about a single catch {} block */
|
|
||||||
typedef struct __catchblock_info
|
|
||||||
{
|
|
||||||
UINT flags; /* flags (see below) */
|
|
||||||
const type_info *type_info; /* C++ type caught by this block */
|
|
||||||
int offset; /* stack offset to copy exception object to */
|
|
||||||
void (*handler)(void);/* catch block handler code */
|
|
||||||
} catchblock_info;
|
|
||||||
#define TYPE_FLAG_CONST 1
|
|
||||||
#define TYPE_FLAG_VOLATILE 2
|
|
||||||
#define TYPE_FLAG_REFERENCE 8
|
|
||||||
|
|
||||||
/* info about a single try {} block */
|
|
||||||
typedef struct __tryblock_info
|
|
||||||
{
|
|
||||||
int start_level; /* start trylevel of that block */
|
|
||||||
int end_level; /* end trylevel of that block */
|
|
||||||
int catch_level; /* initial trylevel of the catch block */
|
|
||||||
int catchblock_count; /* count of catch blocks in array */
|
|
||||||
const catchblock_info *catchblock; /* array of catch blocks */
|
|
||||||
} tryblock_info;
|
|
||||||
|
|
||||||
/* info about the unwind handler for a given trylevel */
|
|
||||||
typedef struct __unwind_info
|
|
||||||
{
|
|
||||||
int prev; /* prev trylevel unwind handler, to run after this one */
|
|
||||||
void (*handler)(void);/* unwind handler */
|
|
||||||
} unwind_info;
|
|
||||||
|
|
||||||
/* descriptor of all try blocks of a given function */
|
|
||||||
typedef struct __cxx_function_descr
|
|
||||||
{
|
|
||||||
UINT magic; /* must be CXX_FRAME_MAGIC */
|
|
||||||
UINT unwind_count; /* number of unwind handlers */
|
|
||||||
const unwind_info *unwind_table; /* array of unwind handlers */
|
|
||||||
UINT tryblock_count; /* number of try blocks */
|
|
||||||
const tryblock_info *tryblock; /* array of try blocks */
|
|
||||||
UINT ipmap_count;
|
|
||||||
const void *ipmap;
|
|
||||||
const void *expect_list; /* expected exceptions list when magic >= VC7 */
|
|
||||||
UINT flags; /* flags when magic >= VC8 */
|
|
||||||
} cxx_function_descr;
|
|
||||||
|
|
||||||
#define FUNC_DESCR_SYNCHRONOUS 1 /* synchronous exceptions only (built with /EHs) */
|
|
||||||
|
|
||||||
typedef void (*cxx_copy_ctor)(void);
|
typedef void (*cxx_copy_ctor)(void);
|
||||||
|
|
||||||
/* offsets for computing the this pointer */
|
/* offsets for computing the this pointer */
|
||||||
|
|
@ -126,9 +73,12 @@ typedef struct __cxx_type_info_table
|
||||||
const cxx_type_info *info[3]; /* variable length, we declare it large enough for static RTTI */
|
const cxx_type_info *info[3]; /* variable length, we declare it large enough for static RTTI */
|
||||||
} cxx_type_info_table;
|
} cxx_type_info_table;
|
||||||
|
|
||||||
typedef DWORD (*cxx_exc_custom_handler)( PEXCEPTION_RECORD, cxx_exception_frame*,
|
struct __cxx_exception_frame;
|
||||||
|
struct __cxx_function_descr;
|
||||||
|
|
||||||
|
typedef DWORD (*cxx_exc_custom_handler)( PEXCEPTION_RECORD, struct __cxx_exception_frame*,
|
||||||
PCONTEXT, EXCEPTION_REGISTRATION_RECORD**,
|
PCONTEXT, EXCEPTION_REGISTRATION_RECORD**,
|
||||||
const cxx_function_descr*, int nested_trylevel,
|
const struct __cxx_function_descr*, int nested_trylevel,
|
||||||
EXCEPTION_REGISTRATION_RECORD *nested_frame, DWORD unknown3 );
|
EXCEPTION_REGISTRATION_RECORD *nested_frame, DWORD unknown3 );
|
||||||
|
|
||||||
/* type information for an exception object */
|
/* type information for an exception object */
|
||||||
|
|
@ -142,7 +92,6 @@ typedef struct __cxx_exception_type
|
||||||
|
|
||||||
void WINAPI _CxxThrowException(exception*,const cxx_exception_type*);
|
void WINAPI _CxxThrowException(exception*,const cxx_exception_type*);
|
||||||
int CDECL _XcptFilter(NTSTATUS, PEXCEPTION_POINTERS);
|
int CDECL _XcptFilter(NTSTATUS, PEXCEPTION_POINTERS);
|
||||||
int CDECL __CppXcptFilter(NTSTATUS, PEXCEPTION_POINTERS);
|
|
||||||
|
|
||||||
static inline const char *dbgstr_type_info( const type_info *info )
|
static inline const char *dbgstr_type_info( const type_info *info )
|
||||||
{
|
{
|
||||||
|
|
|
||||||
|
|
@ -41,494 +41,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(seh);
|
||||||
|
|
||||||
static MSVCRT_security_error_handler security_error_handler;
|
static MSVCRT_security_error_handler security_error_handler;
|
||||||
|
|
||||||
/* VC++ extensions to Win32 SEH */
|
#ifdef __x86_64__
|
||||||
typedef struct _SCOPETABLE
|
|
||||||
{
|
|
||||||
int previousTryLevel;
|
|
||||||
int (*lpfnFilter)(PEXCEPTION_POINTERS);
|
|
||||||
int (*lpfnHandler)(void);
|
|
||||||
} SCOPETABLE, *PSCOPETABLE;
|
|
||||||
|
|
||||||
typedef struct _MSVCRT_EXCEPTION_FRAME
|
|
||||||
{
|
|
||||||
EXCEPTION_REGISTRATION_RECORD *prev;
|
|
||||||
void (*handler)(PEXCEPTION_RECORD, EXCEPTION_REGISTRATION_RECORD*,
|
|
||||||
PCONTEXT, PEXCEPTION_RECORD);
|
|
||||||
PSCOPETABLE scopetable;
|
|
||||||
int trylevel;
|
|
||||||
int _ebp;
|
|
||||||
PEXCEPTION_POINTERS xpointers;
|
|
||||||
} MSVCRT_EXCEPTION_FRAME;
|
|
||||||
|
|
||||||
typedef struct
|
|
||||||
{
|
|
||||||
int gs_cookie_offset;
|
|
||||||
ULONG gs_cookie_xor;
|
|
||||||
int eh_cookie_offset;
|
|
||||||
ULONG eh_cookie_xor;
|
|
||||||
SCOPETABLE entries[1];
|
|
||||||
} SCOPETABLE_V4;
|
|
||||||
|
|
||||||
#define TRYLEVEL_END (-1) /* End of trylevel list */
|
|
||||||
|
|
||||||
#if defined(__GNUC__) && defined(__i386__)
|
|
||||||
static inline void call_finally_block( void *code_block, void *base_ptr )
|
|
||||||
{
|
|
||||||
__asm__ __volatile__ ("movl %1,%%ebp; call *%%eax"
|
|
||||||
: : "a" (code_block), "g" (base_ptr));
|
|
||||||
}
|
|
||||||
|
|
||||||
static inline int call_filter( int (*func)(PEXCEPTION_POINTERS), void *arg, void *ebp )
|
|
||||||
{
|
|
||||||
int ret;
|
|
||||||
__asm__ __volatile__ ("pushl %%ebp; pushl %3; movl %2,%%ebp; call *%%eax; popl %%ebp; popl %%ebp"
|
|
||||||
: "=a" (ret)
|
|
||||||
: "0" (func), "r" (ebp), "r" (arg)
|
|
||||||
: "ecx", "edx", "memory" );
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
static inline int call_unwind_func( int (*func)(void), void *ebp )
|
|
||||||
{
|
|
||||||
int ret;
|
|
||||||
__asm__ __volatile__ ("pushl %%ebp\n\t"
|
|
||||||
"pushl %%ebx\n\t"
|
|
||||||
"pushl %%esi\n\t"
|
|
||||||
"pushl %%edi\n\t"
|
|
||||||
"movl %2,%%ebp\n\t"
|
|
||||||
"call *%0\n\t"
|
|
||||||
"popl %%edi\n\t"
|
|
||||||
"popl %%esi\n\t"
|
|
||||||
"popl %%ebx\n\t"
|
|
||||||
"popl %%ebp"
|
|
||||||
: "=a" (ret)
|
|
||||||
: "0" (func), "r" (ebp)
|
|
||||||
: "ecx", "edx", "memory" );
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef __i386__
|
|
||||||
|
|
||||||
static const SCOPETABLE_V4 *get_scopetable_v4( MSVCRT_EXCEPTION_FRAME *frame, ULONG_PTR cookie )
|
|
||||||
{
|
|
||||||
return (const SCOPETABLE_V4 *)((ULONG_PTR)frame->scopetable ^ cookie);
|
|
||||||
}
|
|
||||||
|
|
||||||
static DWORD MSVCRT_nested_handler(PEXCEPTION_RECORD rec,
|
|
||||||
EXCEPTION_REGISTRATION_RECORD* frame,
|
|
||||||
PCONTEXT context,
|
|
||||||
EXCEPTION_REGISTRATION_RECORD** dispatch)
|
|
||||||
{
|
|
||||||
if (!(rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
|
|
||||||
return ExceptionContinueSearch;
|
|
||||||
*dispatch = frame;
|
|
||||||
return ExceptionCollidedUnwind;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*********************************************************************
|
|
||||||
* _EH_prolog (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Provided for VC++ binary compatibility only */
|
|
||||||
__ASM_GLOBAL_FUNC(_EH_prolog,
|
|
||||||
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") /* skip ret addr */
|
|
||||||
"pushl $-1\n\t"
|
|
||||||
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
||||||
"pushl %eax\n\t"
|
|
||||||
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
||||||
"pushl %fs:0\n\t"
|
|
||||||
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
||||||
"movl %esp, %fs:0\n\t"
|
|
||||||
"movl 12(%esp), %eax\n\t"
|
|
||||||
"movl %ebp, 12(%esp)\n\t"
|
|
||||||
"leal 12(%esp), %ebp\n\t"
|
|
||||||
"pushl %eax\n\t"
|
|
||||||
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
||||||
"ret")
|
|
||||||
|
|
||||||
static void msvcrt_local_unwind2(MSVCRT_EXCEPTION_FRAME* frame, int trylevel, void *ebp)
|
|
||||||
{
|
|
||||||
EXCEPTION_REGISTRATION_RECORD reg;
|
|
||||||
|
|
||||||
TRACE("(%p,%d,%d)\n",frame, frame->trylevel, trylevel);
|
|
||||||
|
|
||||||
/* Register a handler in case of a nested exception */
|
|
||||||
reg.Handler = MSVCRT_nested_handler;
|
|
||||||
reg.Prev = NtCurrentTeb()->Tib.ExceptionList;
|
|
||||||
__wine_push_frame(®);
|
|
||||||
|
|
||||||
while (frame->trylevel != TRYLEVEL_END && frame->trylevel != trylevel)
|
|
||||||
{
|
|
||||||
int level = frame->trylevel;
|
|
||||||
frame->trylevel = frame->scopetable[level].previousTryLevel;
|
|
||||||
if (!frame->scopetable[level].lpfnFilter)
|
|
||||||
{
|
|
||||||
TRACE( "__try block cleanup level %d handler %p ebp %p\n",
|
|
||||||
level, frame->scopetable[level].lpfnHandler, ebp );
|
|
||||||
call_unwind_func( frame->scopetable[level].lpfnHandler, ebp );
|
|
||||||
}
|
|
||||||
}
|
|
||||||
__wine_pop_frame(®);
|
|
||||||
TRACE("unwound OK\n");
|
|
||||||
}
|
|
||||||
|
|
||||||
static void msvcrt_local_unwind4( ULONG *cookie, MSVCRT_EXCEPTION_FRAME* frame, int trylevel, void *ebp )
|
|
||||||
{
|
|
||||||
EXCEPTION_REGISTRATION_RECORD reg;
|
|
||||||
const SCOPETABLE_V4 *scopetable = get_scopetable_v4( frame, *cookie );
|
|
||||||
|
|
||||||
TRACE("(%p,%d,%d)\n",frame, frame->trylevel, trylevel);
|
|
||||||
|
|
||||||
/* Register a handler in case of a nested exception */
|
|
||||||
reg.Handler = MSVCRT_nested_handler;
|
|
||||||
reg.Prev = NtCurrentTeb()->Tib.ExceptionList;
|
|
||||||
__wine_push_frame(®);
|
|
||||||
|
|
||||||
while (frame->trylevel != -2 && frame->trylevel != trylevel)
|
|
||||||
{
|
|
||||||
int level = frame->trylevel;
|
|
||||||
frame->trylevel = scopetable->entries[level].previousTryLevel;
|
|
||||||
if (!scopetable->entries[level].lpfnFilter)
|
|
||||||
{
|
|
||||||
TRACE( "__try block cleanup level %d handler %p ebp %p\n",
|
|
||||||
level, scopetable->entries[level].lpfnHandler, ebp );
|
|
||||||
call_unwind_func( scopetable->entries[level].lpfnHandler, ebp );
|
|
||||||
}
|
|
||||||
}
|
|
||||||
__wine_pop_frame(®);
|
|
||||||
TRACE("unwound OK\n");
|
|
||||||
}
|
|
||||||
|
|
||||||
/*******************************************************************
|
|
||||||
* _local_unwind2 (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
void CDECL _local_unwind2(MSVCRT_EXCEPTION_FRAME* frame, int trylevel)
|
|
||||||
{
|
|
||||||
msvcrt_local_unwind2( frame, trylevel, &frame->_ebp );
|
|
||||||
}
|
|
||||||
|
|
||||||
/*******************************************************************
|
|
||||||
* _local_unwind4 (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
void CDECL _local_unwind4( ULONG *cookie, MSVCRT_EXCEPTION_FRAME* frame, int trylevel )
|
|
||||||
{
|
|
||||||
msvcrt_local_unwind4( cookie, frame, trylevel, &frame->_ebp );
|
|
||||||
}
|
|
||||||
|
|
||||||
/*******************************************************************
|
|
||||||
* _global_unwind2 (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
void CDECL _global_unwind2(EXCEPTION_REGISTRATION_RECORD* frame)
|
|
||||||
{
|
|
||||||
TRACE("(%p)\n",frame);
|
|
||||||
RtlUnwind( frame, 0, 0, 0 );
|
|
||||||
}
|
|
||||||
|
|
||||||
/*********************************************************************
|
|
||||||
* _except_handler2 (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
int CDECL _except_handler2(PEXCEPTION_RECORD rec,
|
|
||||||
EXCEPTION_REGISTRATION_RECORD* frame,
|
|
||||||
PCONTEXT context,
|
|
||||||
EXCEPTION_REGISTRATION_RECORD** dispatcher)
|
|
||||||
{
|
|
||||||
FIXME("exception %x flags=%x at %p handler=%p %p %p stub\n",
|
|
||||||
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
|
||||||
frame->Handler, context, dispatcher);
|
|
||||||
return ExceptionContinueSearch;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*********************************************************************
|
|
||||||
* _except_handler3 (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
int CDECL _except_handler3(PEXCEPTION_RECORD rec,
|
|
||||||
MSVCRT_EXCEPTION_FRAME* frame,
|
|
||||||
PCONTEXT context, void* dispatcher)
|
|
||||||
{
|
|
||||||
int retval, trylevel;
|
|
||||||
EXCEPTION_POINTERS exceptPtrs;
|
|
||||||
PSCOPETABLE pScopeTable;
|
|
||||||
|
|
||||||
TRACE("exception %x flags=%x at %p handler=%p %p %p semi-stub\n",
|
|
||||||
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
|
||||||
frame->handler, context, dispatcher);
|
|
||||||
|
|
||||||
__asm__ __volatile__ ("cld");
|
|
||||||
|
|
||||||
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
|
|
||||||
{
|
|
||||||
/* Unwinding the current frame */
|
|
||||||
msvcrt_local_unwind2(frame, TRYLEVEL_END, &frame->_ebp);
|
|
||||||
TRACE("unwound current frame, returning ExceptionContinueSearch\n");
|
|
||||||
return ExceptionContinueSearch;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
/* Hunting for handler */
|
|
||||||
exceptPtrs.ExceptionRecord = rec;
|
|
||||||
exceptPtrs.ContextRecord = context;
|
|
||||||
*((DWORD *)frame-1) = (DWORD)&exceptPtrs;
|
|
||||||
trylevel = frame->trylevel;
|
|
||||||
pScopeTable = frame->scopetable;
|
|
||||||
|
|
||||||
while (trylevel != TRYLEVEL_END)
|
|
||||||
{
|
|
||||||
TRACE( "level %d prev %d filter %p\n", trylevel, pScopeTable[trylevel].previousTryLevel,
|
|
||||||
pScopeTable[trylevel].lpfnFilter );
|
|
||||||
if (pScopeTable[trylevel].lpfnFilter)
|
|
||||||
{
|
|
||||||
retval = call_filter( pScopeTable[trylevel].lpfnFilter, &exceptPtrs, &frame->_ebp );
|
|
||||||
|
|
||||||
TRACE("filter returned %s\n", retval == EXCEPTION_CONTINUE_EXECUTION ?
|
|
||||||
"CONTINUE_EXECUTION" : retval == EXCEPTION_EXECUTE_HANDLER ?
|
|
||||||
"EXECUTE_HANDLER" : "CONTINUE_SEARCH");
|
|
||||||
|
|
||||||
if (retval == EXCEPTION_CONTINUE_EXECUTION)
|
|
||||||
return ExceptionContinueExecution;
|
|
||||||
|
|
||||||
if (retval == EXCEPTION_EXECUTE_HANDLER)
|
|
||||||
{
|
|
||||||
/* Unwind all higher frames, this one will handle the exception */
|
|
||||||
_global_unwind2((EXCEPTION_REGISTRATION_RECORD*)frame);
|
|
||||||
msvcrt_local_unwind2(frame, trylevel, &frame->_ebp);
|
|
||||||
|
|
||||||
/* Set our trylevel to the enclosing block, and call the __finally
|
|
||||||
* code, which won't return
|
|
||||||
*/
|
|
||||||
frame->trylevel = pScopeTable[trylevel].previousTryLevel;
|
|
||||||
TRACE("__finally block %p\n",pScopeTable[trylevel].lpfnHandler);
|
|
||||||
call_finally_block(pScopeTable[trylevel].lpfnHandler, &frame->_ebp);
|
|
||||||
ERR("Returned from __finally block - expect crash!\n");
|
|
||||||
}
|
|
||||||
}
|
|
||||||
trylevel = pScopeTable[trylevel].previousTryLevel;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
TRACE("reached TRYLEVEL_END, returning ExceptionContinueSearch\n");
|
|
||||||
return ExceptionContinueSearch;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*********************************************************************
|
|
||||||
* _except_handler4_common (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
int CDECL _except_handler4_common( ULONG *cookie, void (*check_cookie)(void),
|
|
||||||
EXCEPTION_RECORD *rec, MSVCRT_EXCEPTION_FRAME *frame,
|
|
||||||
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
|
|
||||||
{
|
|
||||||
int retval, trylevel;
|
|
||||||
EXCEPTION_POINTERS exceptPtrs;
|
|
||||||
const SCOPETABLE_V4 *scope_table = get_scopetable_v4( frame, *cookie );
|
|
||||||
|
|
||||||
TRACE( "exception %x flags=%x at %p handler=%p %p %p cookie=%x scope table=%p cookies=%d/%x,%d/%x\n",
|
|
||||||
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
|
||||||
frame->handler, context, dispatcher, *cookie, scope_table,
|
|
||||||
scope_table->gs_cookie_offset, scope_table->gs_cookie_xor,
|
|
||||||
scope_table->eh_cookie_offset, scope_table->eh_cookie_xor );
|
|
||||||
|
|
||||||
/* FIXME: no cookie validation yet */
|
|
||||||
|
|
||||||
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
|
|
||||||
{
|
|
||||||
/* Unwinding the current frame */
|
|
||||||
msvcrt_local_unwind4( cookie, frame, -2, &frame->_ebp );
|
|
||||||
TRACE("unwound current frame, returning ExceptionContinueSearch\n");
|
|
||||||
return ExceptionContinueSearch;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
/* Hunting for handler */
|
|
||||||
exceptPtrs.ExceptionRecord = rec;
|
|
||||||
exceptPtrs.ContextRecord = context;
|
|
||||||
*((DWORD *)frame-1) = (DWORD)&exceptPtrs;
|
|
||||||
trylevel = frame->trylevel;
|
|
||||||
|
|
||||||
while (trylevel != -2)
|
|
||||||
{
|
|
||||||
TRACE( "level %d prev %d filter %p\n", trylevel,
|
|
||||||
scope_table->entries[trylevel].previousTryLevel,
|
|
||||||
scope_table->entries[trylevel].lpfnFilter );
|
|
||||||
if (scope_table->entries[trylevel].lpfnFilter)
|
|
||||||
{
|
|
||||||
retval = call_filter( scope_table->entries[trylevel].lpfnFilter, &exceptPtrs, &frame->_ebp );
|
|
||||||
|
|
||||||
TRACE("filter returned %s\n", retval == EXCEPTION_CONTINUE_EXECUTION ?
|
|
||||||
"CONTINUE_EXECUTION" : retval == EXCEPTION_EXECUTE_HANDLER ?
|
|
||||||
"EXECUTE_HANDLER" : "CONTINUE_SEARCH");
|
|
||||||
|
|
||||||
if (retval == EXCEPTION_CONTINUE_EXECUTION)
|
|
||||||
return ExceptionContinueExecution;
|
|
||||||
|
|
||||||
if (retval == EXCEPTION_EXECUTE_HANDLER)
|
|
||||||
{
|
|
||||||
/* Unwind all higher frames, this one will handle the exception */
|
|
||||||
_global_unwind2((EXCEPTION_REGISTRATION_RECORD*)frame);
|
|
||||||
msvcrt_local_unwind4( cookie, frame, trylevel, &frame->_ebp );
|
|
||||||
|
|
||||||
/* Set our trylevel to the enclosing block, and call the __finally
|
|
||||||
* code, which won't return
|
|
||||||
*/
|
|
||||||
frame->trylevel = scope_table->entries[trylevel].previousTryLevel;
|
|
||||||
TRACE("__finally block %p\n",scope_table->entries[trylevel].lpfnHandler);
|
|
||||||
call_finally_block(scope_table->entries[trylevel].lpfnHandler, &frame->_ebp);
|
|
||||||
ERR("Returned from __finally block - expect crash!\n");
|
|
||||||
}
|
|
||||||
}
|
|
||||||
trylevel = scope_table->entries[trylevel].previousTryLevel;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
TRACE("reached -2, returning ExceptionContinueSearch\n");
|
|
||||||
return ExceptionContinueSearch;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* setjmp/longjmp implementation
|
|
||||||
*/
|
|
||||||
|
|
||||||
#define MSVCRT_JMP_MAGIC 0x56433230 /* ID value for new jump structure */
|
|
||||||
typedef void (__stdcall *MSVCRT_unwind_function)(const struct MSVCRT___JUMP_BUFFER *);
|
|
||||||
|
|
||||||
/* define an entrypoint for setjmp/setjmp3 that stores the registers in the jmp buf */
|
|
||||||
/* and then jumps to the C backend function */
|
|
||||||
#define DEFINE_SETJMP_ENTRYPOINT(name) \
|
|
||||||
__ASM_GLOBAL_FUNC( name, \
|
|
||||||
"movl 4(%esp),%ecx\n\t" /* jmp_buf */ \
|
|
||||||
"movl %ebp,0(%ecx)\n\t" /* jmp_buf.Ebp */ \
|
|
||||||
"movl %ebx,4(%ecx)\n\t" /* jmp_buf.Ebx */ \
|
|
||||||
"movl %edi,8(%ecx)\n\t" /* jmp_buf.Edi */ \
|
|
||||||
"movl %esi,12(%ecx)\n\t" /* jmp_buf.Esi */ \
|
|
||||||
"movl %esp,16(%ecx)\n\t" /* jmp_buf.Esp */ \
|
|
||||||
"movl 0(%esp),%eax\n\t" \
|
|
||||||
"movl %eax,20(%ecx)\n\t" /* jmp_buf.Eip */ \
|
|
||||||
"jmp " __ASM_NAME("__regs_") # name )
|
|
||||||
|
|
||||||
/* restore the registers from the jmp buf upon longjmp */
|
|
||||||
extern void DECLSPEC_NORETURN longjmp_set_regs( struct MSVCRT___JUMP_BUFFER *jmp, int retval );
|
|
||||||
__ASM_GLOBAL_FUNC( longjmp_set_regs,
|
|
||||||
"movl 4(%esp),%ecx\n\t" /* jmp_buf */
|
|
||||||
"movl 8(%esp),%eax\n\t" /* retval */
|
|
||||||
"movl 0(%ecx),%ebp\n\t" /* jmp_buf.Ebp */
|
|
||||||
"movl 4(%ecx),%ebx\n\t" /* jmp_buf.Ebx */
|
|
||||||
"movl 8(%ecx),%edi\n\t" /* jmp_buf.Edi */
|
|
||||||
"movl 12(%ecx),%esi\n\t" /* jmp_buf.Esi */
|
|
||||||
"movl 16(%ecx),%esp\n\t" /* jmp_buf.Esp */
|
|
||||||
"addl $4,%esp\n\t" /* get rid of return address */
|
|
||||||
"jmp *20(%ecx)\n\t" /* jmp_buf.Eip */ )
|
|
||||||
|
|
||||||
/*
|
|
||||||
* The signatures of the setjmp/longjmp functions do not match that
|
|
||||||
* declared in the setjmp header so they don't follow the regular naming
|
|
||||||
* convention to avoid conflicts.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*******************************************************************
|
|
||||||
* _setjmp (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
DEFINE_SETJMP_ENTRYPOINT(MSVCRT__setjmp)
|
|
||||||
int CDECL __regs_MSVCRT__setjmp(struct MSVCRT___JUMP_BUFFER *jmp)
|
|
||||||
{
|
|
||||||
jmp->Registration = (unsigned long)NtCurrentTeb()->Tib.ExceptionList;
|
|
||||||
if (jmp->Registration == ~0UL)
|
|
||||||
jmp->TryLevel = TRYLEVEL_END;
|
|
||||||
else
|
|
||||||
jmp->TryLevel = ((MSVCRT_EXCEPTION_FRAME*)jmp->Registration)->trylevel;
|
|
||||||
|
|
||||||
TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
|
|
||||||
jmp, jmp->Ebx, jmp->Esi, jmp->Edi, jmp->Ebp, jmp->Esp, jmp->Eip, jmp->Registration );
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*******************************************************************
|
|
||||||
* _setjmp3 (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
DEFINE_SETJMP_ENTRYPOINT( MSVCRT__setjmp3 )
|
|
||||||
int CDECL __regs_MSVCRT__setjmp3(struct MSVCRT___JUMP_BUFFER *jmp, int nb_args, ...)
|
|
||||||
{
|
|
||||||
jmp->Cookie = MSVCRT_JMP_MAGIC;
|
|
||||||
jmp->UnwindFunc = 0;
|
|
||||||
jmp->Registration = (unsigned long)NtCurrentTeb()->Tib.ExceptionList;
|
|
||||||
if (jmp->Registration == ~0UL)
|
|
||||||
{
|
|
||||||
jmp->TryLevel = TRYLEVEL_END;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
va_list args;
|
|
||||||
|
|
||||||
va_start( args, nb_args );
|
|
||||||
if (nb_args > 0) jmp->UnwindFunc = va_arg( args, unsigned long );
|
|
||||||
if (nb_args > 1) jmp->TryLevel = va_arg( args, unsigned long );
|
|
||||||
else jmp->TryLevel = ((MSVCRT_EXCEPTION_FRAME*)jmp->Registration)->trylevel;
|
|
||||||
for (i = 0; i < 6 && i < nb_args - 2; i++)
|
|
||||||
jmp->UnwindData[i] = va_arg( args, unsigned long );
|
|
||||||
va_end( args );
|
|
||||||
}
|
|
||||||
|
|
||||||
TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
|
|
||||||
jmp, jmp->Ebx, jmp->Esi, jmp->Edi, jmp->Ebp, jmp->Esp, jmp->Eip, jmp->Registration );
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*********************************************************************
|
|
||||||
* longjmp (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
void CDECL MSVCRT_longjmp(struct MSVCRT___JUMP_BUFFER *jmp, int retval)
|
|
||||||
{
|
|
||||||
unsigned long cur_frame = 0;
|
|
||||||
|
|
||||||
TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx retval=%08x\n",
|
|
||||||
jmp, jmp->Ebx, jmp->Esi, jmp->Edi, jmp->Ebp, jmp->Esp, jmp->Eip, jmp->Registration, retval );
|
|
||||||
|
|
||||||
cur_frame=(unsigned long)NtCurrentTeb()->Tib.ExceptionList;
|
|
||||||
TRACE("cur_frame=%lx\n",cur_frame);
|
|
||||||
|
|
||||||
if (cur_frame != jmp->Registration)
|
|
||||||
_global_unwind2((EXCEPTION_REGISTRATION_RECORD*)jmp->Registration);
|
|
||||||
|
|
||||||
if (jmp->Registration)
|
|
||||||
{
|
|
||||||
if (!IsBadReadPtr(&jmp->Cookie, sizeof(long)) &&
|
|
||||||
jmp->Cookie == MSVCRT_JMP_MAGIC && jmp->UnwindFunc)
|
|
||||||
{
|
|
||||||
MSVCRT_unwind_function unwind_func;
|
|
||||||
|
|
||||||
unwind_func=(MSVCRT_unwind_function)jmp->UnwindFunc;
|
|
||||||
unwind_func(jmp);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
msvcrt_local_unwind2((MSVCRT_EXCEPTION_FRAME*)jmp->Registration,
|
|
||||||
jmp->TryLevel, (void *)jmp->Ebp);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!retval)
|
|
||||||
retval = 1;
|
|
||||||
|
|
||||||
longjmp_set_regs( jmp, retval );
|
|
||||||
}
|
|
||||||
|
|
||||||
/*********************************************************************
|
|
||||||
* _seh_longjmp_unwind (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
void __stdcall _seh_longjmp_unwind(struct MSVCRT___JUMP_BUFFER *jmp)
|
|
||||||
{
|
|
||||||
msvcrt_local_unwind2( (MSVCRT_EXCEPTION_FRAME *)jmp->Registration, jmp->TryLevel, (void *)jmp->Ebp );
|
|
||||||
}
|
|
||||||
|
|
||||||
/*********************************************************************
|
|
||||||
* _seh_longjmp_unwind4 (MSVCRT.@)
|
|
||||||
*/
|
|
||||||
void __stdcall _seh_longjmp_unwind4(struct MSVCRT___JUMP_BUFFER *jmp)
|
|
||||||
{
|
|
||||||
msvcrt_local_unwind4( (void *)jmp->Cookie, (MSVCRT_EXCEPTION_FRAME *)jmp->Registration,
|
|
||||||
jmp->TryLevel, (void *)jmp->Ebp );
|
|
||||||
}
|
|
||||||
|
|
||||||
#elif defined(__x86_64__)
|
|
||||||
|
|
||||||
/*******************************************************************
|
/*******************************************************************
|
||||||
* _setjmp (MSVCRT.@)
|
* _setjmp (MSVCRT.@)
|
||||||
|
|
|
||||||
|
|
@ -1,7 +1,9 @@
|
||||||
/*
|
/*
|
||||||
* msvcrt C++ exception handling
|
* msvcrt C++ exception handling
|
||||||
*
|
*
|
||||||
|
* Copyright 2000 Jon Griffiths
|
||||||
* Copyright 2002 Alexandre Julliard
|
* Copyright 2002 Alexandre Julliard
|
||||||
|
* Copyright 2005 Juan Lang
|
||||||
*
|
*
|
||||||
* This library is free software; you can redistribute it and/or
|
* This library is free software; you can redistribute it and/or
|
||||||
* modify it under the terms of the GNU Lesser General Public
|
* modify it under the terms of the GNU Lesser General Public
|
||||||
|
|
@ -42,6 +44,89 @@
|
||||||
|
|
||||||
WINE_DEFAULT_DEBUG_CHANNEL(seh);
|
WINE_DEFAULT_DEBUG_CHANNEL(seh);
|
||||||
|
|
||||||
|
|
||||||
|
/* the exception frame used by CxxFrameHandler */
|
||||||
|
typedef struct __cxx_exception_frame
|
||||||
|
{
|
||||||
|
EXCEPTION_REGISTRATION_RECORD frame; /* the standard exception frame */
|
||||||
|
int trylevel;
|
||||||
|
DWORD ebp;
|
||||||
|
} cxx_exception_frame;
|
||||||
|
|
||||||
|
/* info about a single catch {} block */
|
||||||
|
typedef struct __catchblock_info
|
||||||
|
{
|
||||||
|
UINT flags; /* flags (see below) */
|
||||||
|
const type_info *type_info; /* C++ type caught by this block */
|
||||||
|
int offset; /* stack offset to copy exception object to */
|
||||||
|
void (*handler)(void);/* catch block handler code */
|
||||||
|
} catchblock_info;
|
||||||
|
#define TYPE_FLAG_CONST 1
|
||||||
|
#define TYPE_FLAG_VOLATILE 2
|
||||||
|
#define TYPE_FLAG_REFERENCE 8
|
||||||
|
|
||||||
|
/* info about a single try {} block */
|
||||||
|
typedef struct __tryblock_info
|
||||||
|
{
|
||||||
|
int start_level; /* start trylevel of that block */
|
||||||
|
int end_level; /* end trylevel of that block */
|
||||||
|
int catch_level; /* initial trylevel of the catch block */
|
||||||
|
int catchblock_count; /* count of catch blocks in array */
|
||||||
|
const catchblock_info *catchblock; /* array of catch blocks */
|
||||||
|
} tryblock_info;
|
||||||
|
|
||||||
|
/* info about the unwind handler for a given trylevel */
|
||||||
|
typedef struct __unwind_info
|
||||||
|
{
|
||||||
|
int prev; /* prev trylevel unwind handler, to run after this one */
|
||||||
|
void (*handler)(void);/* unwind handler */
|
||||||
|
} unwind_info;
|
||||||
|
|
||||||
|
/* descriptor of all try blocks of a given function */
|
||||||
|
typedef struct __cxx_function_descr
|
||||||
|
{
|
||||||
|
UINT magic; /* must be CXX_FRAME_MAGIC */
|
||||||
|
UINT unwind_count; /* number of unwind handlers */
|
||||||
|
const unwind_info *unwind_table; /* array of unwind handlers */
|
||||||
|
UINT tryblock_count; /* number of try blocks */
|
||||||
|
const tryblock_info *tryblock; /* array of try blocks */
|
||||||
|
UINT ipmap_count;
|
||||||
|
const void *ipmap;
|
||||||
|
const void *expect_list; /* expected exceptions list when magic >= VC7 */
|
||||||
|
UINT flags; /* flags when magic >= VC8 */
|
||||||
|
} cxx_function_descr;
|
||||||
|
|
||||||
|
#define FUNC_DESCR_SYNCHRONOUS 1 /* synchronous exceptions only (built with /EHs) */
|
||||||
|
|
||||||
|
typedef struct _SCOPETABLE
|
||||||
|
{
|
||||||
|
int previousTryLevel;
|
||||||
|
int (*lpfnFilter)(PEXCEPTION_POINTERS);
|
||||||
|
int (*lpfnHandler)(void);
|
||||||
|
} SCOPETABLE, *PSCOPETABLE;
|
||||||
|
|
||||||
|
typedef struct _MSVCRT_EXCEPTION_FRAME
|
||||||
|
{
|
||||||
|
EXCEPTION_REGISTRATION_RECORD *prev;
|
||||||
|
void (*handler)(PEXCEPTION_RECORD, EXCEPTION_REGISTRATION_RECORD*,
|
||||||
|
PCONTEXT, PEXCEPTION_RECORD);
|
||||||
|
PSCOPETABLE scopetable;
|
||||||
|
int trylevel;
|
||||||
|
int _ebp;
|
||||||
|
PEXCEPTION_POINTERS xpointers;
|
||||||
|
} MSVCRT_EXCEPTION_FRAME;
|
||||||
|
|
||||||
|
typedef struct
|
||||||
|
{
|
||||||
|
int gs_cookie_offset;
|
||||||
|
ULONG gs_cookie_xor;
|
||||||
|
int eh_cookie_offset;
|
||||||
|
ULONG eh_cookie_xor;
|
||||||
|
SCOPETABLE entries[1];
|
||||||
|
} SCOPETABLE_V4;
|
||||||
|
|
||||||
|
#define TRYLEVEL_END (-1) /* End of trylevel list */
|
||||||
|
|
||||||
DWORD CDECL cxx_frame_handler( PEXCEPTION_RECORD rec, cxx_exception_frame* frame,
|
DWORD CDECL cxx_frame_handler( PEXCEPTION_RECORD rec, cxx_exception_frame* frame,
|
||||||
PCONTEXT context, EXCEPTION_REGISTRATION_RECORD** dispatch,
|
PCONTEXT context, EXCEPTION_REGISTRATION_RECORD** dispatch,
|
||||||
const cxx_function_descr *descr,
|
const cxx_function_descr *descr,
|
||||||
|
|
@ -90,6 +175,41 @@ static inline void DECLSPEC_NORETURN continue_after_catch( cxx_exception_frame*
|
||||||
for (;;) ; /* unreached */
|
for (;;) ; /* unreached */
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static inline void call_finally_block( void *code_block, void *base_ptr )
|
||||||
|
{
|
||||||
|
__asm__ __volatile__ ("movl %1,%%ebp; call *%%eax"
|
||||||
|
: : "a" (code_block), "g" (base_ptr));
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int call_filter( int (*func)(PEXCEPTION_POINTERS), void *arg, void *ebp )
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
__asm__ __volatile__ ("pushl %%ebp; pushl %3; movl %2,%%ebp; call *%%eax; popl %%ebp; popl %%ebp"
|
||||||
|
: "=a" (ret)
|
||||||
|
: "0" (func), "r" (ebp), "r" (arg)
|
||||||
|
: "ecx", "edx", "memory" );
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int call_unwind_func( int (*func)(void), void *ebp )
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
__asm__ __volatile__ ("pushl %%ebp\n\t"
|
||||||
|
"pushl %%ebx\n\t"
|
||||||
|
"pushl %%esi\n\t"
|
||||||
|
"pushl %%edi\n\t"
|
||||||
|
"movl %2,%%ebp\n\t"
|
||||||
|
"call *%0\n\t"
|
||||||
|
"popl %%edi\n\t"
|
||||||
|
"popl %%esi\n\t"
|
||||||
|
"popl %%ebx\n\t"
|
||||||
|
"popl %%ebp"
|
||||||
|
: "=a" (ret)
|
||||||
|
: "0" (func), "r" (ebp)
|
||||||
|
: "ecx", "edx", "memory" );
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
static inline void dump_type( const cxx_type_info *type )
|
static inline void dump_type( const cxx_type_info *type )
|
||||||
{
|
{
|
||||||
TRACE( "flags %x type %p %s offsets %d,%d,%d size %d copy ctor %p\n",
|
TRACE( "flags %x type %p %s offsets %d,%d,%d size %d copy ctor %p\n",
|
||||||
|
|
@ -496,4 +616,420 @@ unsigned int CDECL __CxxQueryExceptionSize(void)
|
||||||
return sizeof(cxx_exception_type);
|
return sizeof(cxx_exception_type);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*********************************************************************
|
||||||
|
* _EH_prolog (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* Provided for VC++ binary compatibility only */
|
||||||
|
__ASM_GLOBAL_FUNC(_EH_prolog,
|
||||||
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") /* skip ret addr */
|
||||||
|
"pushl $-1\n\t"
|
||||||
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
||||||
|
"pushl %eax\n\t"
|
||||||
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
||||||
|
"pushl %fs:0\n\t"
|
||||||
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
||||||
|
"movl %esp, %fs:0\n\t"
|
||||||
|
"movl 12(%esp), %eax\n\t"
|
||||||
|
"movl %ebp, 12(%esp)\n\t"
|
||||||
|
"leal 12(%esp), %ebp\n\t"
|
||||||
|
"pushl %eax\n\t"
|
||||||
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
||||||
|
"ret")
|
||||||
|
|
||||||
|
static const SCOPETABLE_V4 *get_scopetable_v4( MSVCRT_EXCEPTION_FRAME *frame, ULONG_PTR cookie )
|
||||||
|
{
|
||||||
|
return (const SCOPETABLE_V4 *)((ULONG_PTR)frame->scopetable ^ cookie);
|
||||||
|
}
|
||||||
|
|
||||||
|
static DWORD MSVCRT_nested_handler(PEXCEPTION_RECORD rec,
|
||||||
|
EXCEPTION_REGISTRATION_RECORD* frame,
|
||||||
|
PCONTEXT context,
|
||||||
|
EXCEPTION_REGISTRATION_RECORD** dispatch)
|
||||||
|
{
|
||||||
|
if (!(rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
|
||||||
|
return ExceptionContinueSearch;
|
||||||
|
*dispatch = frame;
|
||||||
|
return ExceptionCollidedUnwind;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void msvcrt_local_unwind2(MSVCRT_EXCEPTION_FRAME* frame, int trylevel, void *ebp)
|
||||||
|
{
|
||||||
|
EXCEPTION_REGISTRATION_RECORD reg;
|
||||||
|
|
||||||
|
TRACE("(%p,%d,%d)\n",frame, frame->trylevel, trylevel);
|
||||||
|
|
||||||
|
/* Register a handler in case of a nested exception */
|
||||||
|
reg.Handler = MSVCRT_nested_handler;
|
||||||
|
reg.Prev = NtCurrentTeb()->Tib.ExceptionList;
|
||||||
|
__wine_push_frame(®);
|
||||||
|
|
||||||
|
while (frame->trylevel != TRYLEVEL_END && frame->trylevel != trylevel)
|
||||||
|
{
|
||||||
|
int level = frame->trylevel;
|
||||||
|
frame->trylevel = frame->scopetable[level].previousTryLevel;
|
||||||
|
if (!frame->scopetable[level].lpfnFilter)
|
||||||
|
{
|
||||||
|
TRACE( "__try block cleanup level %d handler %p ebp %p\n",
|
||||||
|
level, frame->scopetable[level].lpfnHandler, ebp );
|
||||||
|
call_unwind_func( frame->scopetable[level].lpfnHandler, ebp );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
__wine_pop_frame(®);
|
||||||
|
TRACE("unwound OK\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
static void msvcrt_local_unwind4( ULONG *cookie, MSVCRT_EXCEPTION_FRAME* frame, int trylevel, void *ebp )
|
||||||
|
{
|
||||||
|
EXCEPTION_REGISTRATION_RECORD reg;
|
||||||
|
const SCOPETABLE_V4 *scopetable = get_scopetable_v4( frame, *cookie );
|
||||||
|
|
||||||
|
TRACE("(%p,%d,%d)\n",frame, frame->trylevel, trylevel);
|
||||||
|
|
||||||
|
/* Register a handler in case of a nested exception */
|
||||||
|
reg.Handler = MSVCRT_nested_handler;
|
||||||
|
reg.Prev = NtCurrentTeb()->Tib.ExceptionList;
|
||||||
|
__wine_push_frame(®);
|
||||||
|
|
||||||
|
while (frame->trylevel != -2 && frame->trylevel != trylevel)
|
||||||
|
{
|
||||||
|
int level = frame->trylevel;
|
||||||
|
frame->trylevel = scopetable->entries[level].previousTryLevel;
|
||||||
|
if (!scopetable->entries[level].lpfnFilter)
|
||||||
|
{
|
||||||
|
TRACE( "__try block cleanup level %d handler %p ebp %p\n",
|
||||||
|
level, scopetable->entries[level].lpfnHandler, ebp );
|
||||||
|
call_unwind_func( scopetable->entries[level].lpfnHandler, ebp );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
__wine_pop_frame(®);
|
||||||
|
TRACE("unwound OK\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************
|
||||||
|
* _local_unwind2 (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
void CDECL _local_unwind2(MSVCRT_EXCEPTION_FRAME* frame, int trylevel)
|
||||||
|
{
|
||||||
|
msvcrt_local_unwind2( frame, trylevel, &frame->_ebp );
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************
|
||||||
|
* _local_unwind4 (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
void CDECL _local_unwind4( ULONG *cookie, MSVCRT_EXCEPTION_FRAME* frame, int trylevel )
|
||||||
|
{
|
||||||
|
msvcrt_local_unwind4( cookie, frame, trylevel, &frame->_ebp );
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************
|
||||||
|
* _global_unwind2 (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
void CDECL _global_unwind2(EXCEPTION_REGISTRATION_RECORD* frame)
|
||||||
|
{
|
||||||
|
TRACE("(%p)\n",frame);
|
||||||
|
RtlUnwind( frame, 0, 0, 0 );
|
||||||
|
}
|
||||||
|
|
||||||
|
/*********************************************************************
|
||||||
|
* _except_handler2 (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
int CDECL _except_handler2(PEXCEPTION_RECORD rec,
|
||||||
|
EXCEPTION_REGISTRATION_RECORD* frame,
|
||||||
|
PCONTEXT context,
|
||||||
|
EXCEPTION_REGISTRATION_RECORD** dispatcher)
|
||||||
|
{
|
||||||
|
FIXME("exception %x flags=%x at %p handler=%p %p %p stub\n",
|
||||||
|
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
||||||
|
frame->Handler, context, dispatcher);
|
||||||
|
return ExceptionContinueSearch;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*********************************************************************
|
||||||
|
* _except_handler3 (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
int CDECL _except_handler3(PEXCEPTION_RECORD rec,
|
||||||
|
MSVCRT_EXCEPTION_FRAME* frame,
|
||||||
|
PCONTEXT context, void* dispatcher)
|
||||||
|
{
|
||||||
|
int retval, trylevel;
|
||||||
|
EXCEPTION_POINTERS exceptPtrs;
|
||||||
|
PSCOPETABLE pScopeTable;
|
||||||
|
|
||||||
|
TRACE("exception %x flags=%x at %p handler=%p %p %p semi-stub\n",
|
||||||
|
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
||||||
|
frame->handler, context, dispatcher);
|
||||||
|
|
||||||
|
__asm__ __volatile__ ("cld");
|
||||||
|
|
||||||
|
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
|
||||||
|
{
|
||||||
|
/* Unwinding the current frame */
|
||||||
|
msvcrt_local_unwind2(frame, TRYLEVEL_END, &frame->_ebp);
|
||||||
|
TRACE("unwound current frame, returning ExceptionContinueSearch\n");
|
||||||
|
return ExceptionContinueSearch;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* Hunting for handler */
|
||||||
|
exceptPtrs.ExceptionRecord = rec;
|
||||||
|
exceptPtrs.ContextRecord = context;
|
||||||
|
*((DWORD *)frame-1) = (DWORD)&exceptPtrs;
|
||||||
|
trylevel = frame->trylevel;
|
||||||
|
pScopeTable = frame->scopetable;
|
||||||
|
|
||||||
|
while (trylevel != TRYLEVEL_END)
|
||||||
|
{
|
||||||
|
TRACE( "level %d prev %d filter %p\n", trylevel, pScopeTable[trylevel].previousTryLevel,
|
||||||
|
pScopeTable[trylevel].lpfnFilter );
|
||||||
|
if (pScopeTable[trylevel].lpfnFilter)
|
||||||
|
{
|
||||||
|
retval = call_filter( pScopeTable[trylevel].lpfnFilter, &exceptPtrs, &frame->_ebp );
|
||||||
|
|
||||||
|
TRACE("filter returned %s\n", retval == EXCEPTION_CONTINUE_EXECUTION ?
|
||||||
|
"CONTINUE_EXECUTION" : retval == EXCEPTION_EXECUTE_HANDLER ?
|
||||||
|
"EXECUTE_HANDLER" : "CONTINUE_SEARCH");
|
||||||
|
|
||||||
|
if (retval == EXCEPTION_CONTINUE_EXECUTION)
|
||||||
|
return ExceptionContinueExecution;
|
||||||
|
|
||||||
|
if (retval == EXCEPTION_EXECUTE_HANDLER)
|
||||||
|
{
|
||||||
|
/* Unwind all higher frames, this one will handle the exception */
|
||||||
|
_global_unwind2((EXCEPTION_REGISTRATION_RECORD*)frame);
|
||||||
|
msvcrt_local_unwind2(frame, trylevel, &frame->_ebp);
|
||||||
|
|
||||||
|
/* Set our trylevel to the enclosing block, and call the __finally
|
||||||
|
* code, which won't return
|
||||||
|
*/
|
||||||
|
frame->trylevel = pScopeTable[trylevel].previousTryLevel;
|
||||||
|
TRACE("__finally block %p\n",pScopeTable[trylevel].lpfnHandler);
|
||||||
|
call_finally_block(pScopeTable[trylevel].lpfnHandler, &frame->_ebp);
|
||||||
|
ERR("Returned from __finally block - expect crash!\n");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
trylevel = pScopeTable[trylevel].previousTryLevel;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
TRACE("reached TRYLEVEL_END, returning ExceptionContinueSearch\n");
|
||||||
|
return ExceptionContinueSearch;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*********************************************************************
|
||||||
|
* _except_handler4_common (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
int CDECL _except_handler4_common( ULONG *cookie, void (*check_cookie)(void),
|
||||||
|
EXCEPTION_RECORD *rec, MSVCRT_EXCEPTION_FRAME *frame,
|
||||||
|
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
|
||||||
|
{
|
||||||
|
int retval, trylevel;
|
||||||
|
EXCEPTION_POINTERS exceptPtrs;
|
||||||
|
const SCOPETABLE_V4 *scope_table = get_scopetable_v4( frame, *cookie );
|
||||||
|
|
||||||
|
TRACE( "exception %x flags=%x at %p handler=%p %p %p cookie=%x scope table=%p cookies=%d/%x,%d/%x\n",
|
||||||
|
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
||||||
|
frame->handler, context, dispatcher, *cookie, scope_table,
|
||||||
|
scope_table->gs_cookie_offset, scope_table->gs_cookie_xor,
|
||||||
|
scope_table->eh_cookie_offset, scope_table->eh_cookie_xor );
|
||||||
|
|
||||||
|
/* FIXME: no cookie validation yet */
|
||||||
|
|
||||||
|
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
|
||||||
|
{
|
||||||
|
/* Unwinding the current frame */
|
||||||
|
msvcrt_local_unwind4( cookie, frame, -2, &frame->_ebp );
|
||||||
|
TRACE("unwound current frame, returning ExceptionContinueSearch\n");
|
||||||
|
return ExceptionContinueSearch;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* Hunting for handler */
|
||||||
|
exceptPtrs.ExceptionRecord = rec;
|
||||||
|
exceptPtrs.ContextRecord = context;
|
||||||
|
*((DWORD *)frame-1) = (DWORD)&exceptPtrs;
|
||||||
|
trylevel = frame->trylevel;
|
||||||
|
|
||||||
|
while (trylevel != -2)
|
||||||
|
{
|
||||||
|
TRACE( "level %d prev %d filter %p\n", trylevel,
|
||||||
|
scope_table->entries[trylevel].previousTryLevel,
|
||||||
|
scope_table->entries[trylevel].lpfnFilter );
|
||||||
|
if (scope_table->entries[trylevel].lpfnFilter)
|
||||||
|
{
|
||||||
|
retval = call_filter( scope_table->entries[trylevel].lpfnFilter, &exceptPtrs, &frame->_ebp );
|
||||||
|
|
||||||
|
TRACE("filter returned %s\n", retval == EXCEPTION_CONTINUE_EXECUTION ?
|
||||||
|
"CONTINUE_EXECUTION" : retval == EXCEPTION_EXECUTE_HANDLER ?
|
||||||
|
"EXECUTE_HANDLER" : "CONTINUE_SEARCH");
|
||||||
|
|
||||||
|
if (retval == EXCEPTION_CONTINUE_EXECUTION)
|
||||||
|
return ExceptionContinueExecution;
|
||||||
|
|
||||||
|
if (retval == EXCEPTION_EXECUTE_HANDLER)
|
||||||
|
{
|
||||||
|
/* Unwind all higher frames, this one will handle the exception */
|
||||||
|
_global_unwind2((EXCEPTION_REGISTRATION_RECORD*)frame);
|
||||||
|
msvcrt_local_unwind4( cookie, frame, trylevel, &frame->_ebp );
|
||||||
|
|
||||||
|
/* Set our trylevel to the enclosing block, and call the __finally
|
||||||
|
* code, which won't return
|
||||||
|
*/
|
||||||
|
frame->trylevel = scope_table->entries[trylevel].previousTryLevel;
|
||||||
|
TRACE("__finally block %p\n",scope_table->entries[trylevel].lpfnHandler);
|
||||||
|
call_finally_block(scope_table->entries[trylevel].lpfnHandler, &frame->_ebp);
|
||||||
|
ERR("Returned from __finally block - expect crash!\n");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
trylevel = scope_table->entries[trylevel].previousTryLevel;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
TRACE("reached -2, returning ExceptionContinueSearch\n");
|
||||||
|
return ExceptionContinueSearch;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* setjmp/longjmp implementation
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define MSVCRT_JMP_MAGIC 0x56433230 /* ID value for new jump structure */
|
||||||
|
typedef void (__stdcall *MSVCRT_unwind_function)(const struct MSVCRT___JUMP_BUFFER *);
|
||||||
|
|
||||||
|
/* define an entrypoint for setjmp/setjmp3 that stores the registers in the jmp buf */
|
||||||
|
/* and then jumps to the C backend function */
|
||||||
|
#define DEFINE_SETJMP_ENTRYPOINT(name) \
|
||||||
|
__ASM_GLOBAL_FUNC( name, \
|
||||||
|
"movl 4(%esp),%ecx\n\t" /* jmp_buf */ \
|
||||||
|
"movl %ebp,0(%ecx)\n\t" /* jmp_buf.Ebp */ \
|
||||||
|
"movl %ebx,4(%ecx)\n\t" /* jmp_buf.Ebx */ \
|
||||||
|
"movl %edi,8(%ecx)\n\t" /* jmp_buf.Edi */ \
|
||||||
|
"movl %esi,12(%ecx)\n\t" /* jmp_buf.Esi */ \
|
||||||
|
"movl %esp,16(%ecx)\n\t" /* jmp_buf.Esp */ \
|
||||||
|
"movl 0(%esp),%eax\n\t" \
|
||||||
|
"movl %eax,20(%ecx)\n\t" /* jmp_buf.Eip */ \
|
||||||
|
"jmp " __ASM_NAME("__regs_") # name )
|
||||||
|
|
||||||
|
/* restore the registers from the jmp buf upon longjmp */
|
||||||
|
extern void DECLSPEC_NORETURN longjmp_set_regs( struct MSVCRT___JUMP_BUFFER *jmp, int retval );
|
||||||
|
__ASM_GLOBAL_FUNC( longjmp_set_regs,
|
||||||
|
"movl 4(%esp),%ecx\n\t" /* jmp_buf */
|
||||||
|
"movl 8(%esp),%eax\n\t" /* retval */
|
||||||
|
"movl 0(%ecx),%ebp\n\t" /* jmp_buf.Ebp */
|
||||||
|
"movl 4(%ecx),%ebx\n\t" /* jmp_buf.Ebx */
|
||||||
|
"movl 8(%ecx),%edi\n\t" /* jmp_buf.Edi */
|
||||||
|
"movl 12(%ecx),%esi\n\t" /* jmp_buf.Esi */
|
||||||
|
"movl 16(%ecx),%esp\n\t" /* jmp_buf.Esp */
|
||||||
|
"addl $4,%esp\n\t" /* get rid of return address */
|
||||||
|
"jmp *20(%ecx)\n\t" /* jmp_buf.Eip */ )
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The signatures of the setjmp/longjmp functions do not match that
|
||||||
|
* declared in the setjmp header so they don't follow the regular naming
|
||||||
|
* convention to avoid conflicts.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*******************************************************************
|
||||||
|
* _setjmp (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
DEFINE_SETJMP_ENTRYPOINT(MSVCRT__setjmp)
|
||||||
|
int CDECL __regs_MSVCRT__setjmp(struct MSVCRT___JUMP_BUFFER *jmp)
|
||||||
|
{
|
||||||
|
jmp->Registration = (unsigned long)NtCurrentTeb()->Tib.ExceptionList;
|
||||||
|
if (jmp->Registration == ~0UL)
|
||||||
|
jmp->TryLevel = TRYLEVEL_END;
|
||||||
|
else
|
||||||
|
jmp->TryLevel = ((MSVCRT_EXCEPTION_FRAME*)jmp->Registration)->trylevel;
|
||||||
|
|
||||||
|
TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
|
||||||
|
jmp, jmp->Ebx, jmp->Esi, jmp->Edi, jmp->Ebp, jmp->Esp, jmp->Eip, jmp->Registration );
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************
|
||||||
|
* _setjmp3 (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
DEFINE_SETJMP_ENTRYPOINT( MSVCRT__setjmp3 )
|
||||||
|
int CDECL __regs_MSVCRT__setjmp3(struct MSVCRT___JUMP_BUFFER *jmp, int nb_args, ...)
|
||||||
|
{
|
||||||
|
jmp->Cookie = MSVCRT_JMP_MAGIC;
|
||||||
|
jmp->UnwindFunc = 0;
|
||||||
|
jmp->Registration = (unsigned long)NtCurrentTeb()->Tib.ExceptionList;
|
||||||
|
if (jmp->Registration == ~0UL)
|
||||||
|
{
|
||||||
|
jmp->TryLevel = TRYLEVEL_END;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
va_list args;
|
||||||
|
|
||||||
|
va_start( args, nb_args );
|
||||||
|
if (nb_args > 0) jmp->UnwindFunc = va_arg( args, unsigned long );
|
||||||
|
if (nb_args > 1) jmp->TryLevel = va_arg( args, unsigned long );
|
||||||
|
else jmp->TryLevel = ((MSVCRT_EXCEPTION_FRAME*)jmp->Registration)->trylevel;
|
||||||
|
for (i = 0; i < 6 && i < nb_args - 2; i++)
|
||||||
|
jmp->UnwindData[i] = va_arg( args, unsigned long );
|
||||||
|
va_end( args );
|
||||||
|
}
|
||||||
|
|
||||||
|
TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
|
||||||
|
jmp, jmp->Ebx, jmp->Esi, jmp->Edi, jmp->Ebp, jmp->Esp, jmp->Eip, jmp->Registration );
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*********************************************************************
|
||||||
|
* longjmp (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
void CDECL MSVCRT_longjmp(struct MSVCRT___JUMP_BUFFER *jmp, int retval)
|
||||||
|
{
|
||||||
|
unsigned long cur_frame = 0;
|
||||||
|
|
||||||
|
TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx retval=%08x\n",
|
||||||
|
jmp, jmp->Ebx, jmp->Esi, jmp->Edi, jmp->Ebp, jmp->Esp, jmp->Eip, jmp->Registration, retval );
|
||||||
|
|
||||||
|
cur_frame=(unsigned long)NtCurrentTeb()->Tib.ExceptionList;
|
||||||
|
TRACE("cur_frame=%lx\n",cur_frame);
|
||||||
|
|
||||||
|
if (cur_frame != jmp->Registration)
|
||||||
|
_global_unwind2((EXCEPTION_REGISTRATION_RECORD*)jmp->Registration);
|
||||||
|
|
||||||
|
if (jmp->Registration)
|
||||||
|
{
|
||||||
|
if (!IsBadReadPtr(&jmp->Cookie, sizeof(long)) &&
|
||||||
|
jmp->Cookie == MSVCRT_JMP_MAGIC && jmp->UnwindFunc)
|
||||||
|
{
|
||||||
|
MSVCRT_unwind_function unwind_func;
|
||||||
|
|
||||||
|
unwind_func=(MSVCRT_unwind_function)jmp->UnwindFunc;
|
||||||
|
unwind_func(jmp);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
msvcrt_local_unwind2((MSVCRT_EXCEPTION_FRAME*)jmp->Registration,
|
||||||
|
jmp->TryLevel, (void *)jmp->Ebp);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!retval)
|
||||||
|
retval = 1;
|
||||||
|
|
||||||
|
longjmp_set_regs( jmp, retval );
|
||||||
|
}
|
||||||
|
|
||||||
|
/*********************************************************************
|
||||||
|
* _seh_longjmp_unwind (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
void __stdcall _seh_longjmp_unwind(struct MSVCRT___JUMP_BUFFER *jmp)
|
||||||
|
{
|
||||||
|
msvcrt_local_unwind2( (MSVCRT_EXCEPTION_FRAME *)jmp->Registration, jmp->TryLevel, (void *)jmp->Ebp );
|
||||||
|
}
|
||||||
|
|
||||||
|
/*********************************************************************
|
||||||
|
* _seh_longjmp_unwind4 (MSVCRT.@)
|
||||||
|
*/
|
||||||
|
void __stdcall _seh_longjmp_unwind4(struct MSVCRT___JUMP_BUFFER *jmp)
|
||||||
|
{
|
||||||
|
msvcrt_local_unwind4( (void *)jmp->Cookie, (MSVCRT_EXCEPTION_FRAME *)jmp->Registration,
|
||||||
|
jmp->TryLevel, (void *)jmp->Ebp );
|
||||||
|
}
|
||||||
|
|
||||||
#endif /* __i386__ */
|
#endif /* __i386__ */
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue