mirror of
https://github.com/reactos/wine.git
synced 2024-11-28 14:10:32 +00:00
1054 lines
40 KiB
C
1054 lines
40 KiB
C
/*
|
|
* msvcrt C++ exception handling
|
|
*
|
|
* Copyright 2000 Jon Griffiths
|
|
* Copyright 2002 Alexandre Julliard
|
|
* Copyright 2005 Juan Lang
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*
|
|
* NOTES
|
|
* A good reference is the article "How a C++ compiler implements
|
|
* exception handling" by Vishal Kochhar, available on
|
|
* www.thecodeproject.com.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#ifdef __i386__
|
|
|
|
#include <stdarg.h>
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "winternl.h"
|
|
#include "msvcrt.h"
|
|
#include "wine/exception.h"
|
|
#include "excpt.h"
|
|
#include "wine/debug.h"
|
|
|
|
#include "cppexcept.h"
|
|
|
|
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,
|
|
PCONTEXT context, EXCEPTION_REGISTRATION_RECORD** dispatch,
|
|
const cxx_function_descr *descr,
|
|
EXCEPTION_REGISTRATION_RECORD* nested_frame, int nested_trylevel );
|
|
|
|
/* call a function with a given ebp */
|
|
static inline void *call_ebp_func( void *func, void *ebp )
|
|
{
|
|
void *ret;
|
|
int dummy;
|
|
__asm__ __volatile__ ("pushl %%ebx\n\t"
|
|
"pushl %%ebp\n\t"
|
|
"movl %4,%%ebp\n\t"
|
|
"call *%%eax\n\t"
|
|
"popl %%ebp\n\t"
|
|
"popl %%ebx"
|
|
: "=a" (ret), "=S" (dummy), "=D" (dummy)
|
|
: "0" (func), "1" (ebp) : "ecx", "edx", "memory" );
|
|
return ret;
|
|
}
|
|
|
|
/* call a copy constructor */
|
|
static inline void call_copy_ctor( void *func, void *this, void *src, int has_vbase )
|
|
{
|
|
TRACE( "calling copy ctor %p object %p src %p\n", func, this, src );
|
|
if (has_vbase)
|
|
/* in that case copy ctor takes an extra bool indicating whether to copy the base class */
|
|
__asm__ __volatile__("pushl $1; pushl %2; call *%0"
|
|
: : "r" (func), "c" (this), "r" (src) : "eax", "edx", "memory" );
|
|
else
|
|
__asm__ __volatile__("pushl %2; call *%0"
|
|
: : "r" (func), "c" (this), "r" (src) : "eax", "edx", "memory" );
|
|
}
|
|
|
|
/* call the destructor of the exception object */
|
|
static inline void call_dtor( void *func, void *object )
|
|
{
|
|
__asm__ __volatile__("call *%0" : : "r" (func), "c" (object) : "eax", "edx", "memory" );
|
|
}
|
|
|
|
/* continue execution to the specified address after exception is caught */
|
|
static inline void DECLSPEC_NORETURN continue_after_catch( cxx_exception_frame* frame, void *addr )
|
|
{
|
|
__asm__ __volatile__("movl -4(%0),%%esp; leal 12(%0),%%ebp; jmp *%1"
|
|
: : "r" (frame), "a" (addr) );
|
|
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 )
|
|
{
|
|
TRACE( "flags %x type %p %s offsets %d,%d,%d size %d copy ctor %p\n",
|
|
type->flags, type->type_info, dbgstr_type_info(type->type_info),
|
|
type->offsets.this_offset, type->offsets.vbase_descr, type->offsets.vbase_offset,
|
|
type->size, type->copy_ctor );
|
|
}
|
|
|
|
static void dump_exception_type( const cxx_exception_type *type )
|
|
{
|
|
UINT i;
|
|
|
|
TRACE( "flags %x destr %p handler %p type info %p\n",
|
|
type->flags, type->destructor, type->custom_handler, type->type_info_table );
|
|
for (i = 0; i < type->type_info_table->count; i++)
|
|
{
|
|
TRACE( " %d: ", i );
|
|
dump_type( type->type_info_table->info[i] );
|
|
}
|
|
}
|
|
|
|
static void dump_function_descr( const cxx_function_descr *descr )
|
|
{
|
|
UINT i;
|
|
int j;
|
|
|
|
TRACE( "magic %x\n", descr->magic );
|
|
TRACE( "unwind table: %p %d\n", descr->unwind_table, descr->unwind_count );
|
|
for (i = 0; i < descr->unwind_count; i++)
|
|
{
|
|
TRACE( " %d: prev %d func %p\n", i,
|
|
descr->unwind_table[i].prev, descr->unwind_table[i].handler );
|
|
}
|
|
TRACE( "try table: %p %d\n", descr->tryblock, descr->tryblock_count );
|
|
for (i = 0; i < descr->tryblock_count; i++)
|
|
{
|
|
TRACE( " %d: start %d end %d catchlevel %d catch %p %d\n", i,
|
|
descr->tryblock[i].start_level, descr->tryblock[i].end_level,
|
|
descr->tryblock[i].catch_level, descr->tryblock[i].catchblock,
|
|
descr->tryblock[i].catchblock_count );
|
|
for (j = 0; j < descr->tryblock[i].catchblock_count; j++)
|
|
{
|
|
const catchblock_info *ptr = &descr->tryblock[i].catchblock[j];
|
|
TRACE( " %d: flags %x offset %d handler %p type %p %s\n",
|
|
j, ptr->flags, ptr->offset, ptr->handler,
|
|
ptr->type_info, dbgstr_type_info( ptr->type_info ) );
|
|
}
|
|
}
|
|
if (descr->magic <= CXX_FRAME_MAGIC_VC6) return;
|
|
TRACE( "expect list: %p\n", descr->expect_list );
|
|
if (descr->magic <= CXX_FRAME_MAGIC_VC7) return;
|
|
TRACE( "flags: %08x\n", descr->flags );
|
|
}
|
|
|
|
/* check if the exception type is caught by a given catch block, and return the type that matched */
|
|
static const cxx_type_info *find_caught_type( cxx_exception_type *exc_type,
|
|
const catchblock_info *catchblock )
|
|
{
|
|
UINT i;
|
|
|
|
for (i = 0; i < exc_type->type_info_table->count; i++)
|
|
{
|
|
const cxx_type_info *type = exc_type->type_info_table->info[i];
|
|
|
|
if (!catchblock->type_info) return type; /* catch(...) matches any type */
|
|
if (catchblock->type_info != type->type_info)
|
|
{
|
|
if (strcmp( catchblock->type_info->mangled, type->type_info->mangled )) continue;
|
|
}
|
|
/* type is the same, now check the flags */
|
|
if ((exc_type->flags & TYPE_FLAG_CONST) &&
|
|
!(catchblock->flags & TYPE_FLAG_CONST)) continue;
|
|
if ((exc_type->flags & TYPE_FLAG_VOLATILE) &&
|
|
!(catchblock->flags & TYPE_FLAG_VOLATILE)) continue;
|
|
return type; /* it matched */
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* copy the exception object where the catch block wants it */
|
|
static void copy_exception( void *object, cxx_exception_frame *frame,
|
|
const catchblock_info *catchblock, const cxx_type_info *type )
|
|
{
|
|
void **dest_ptr;
|
|
|
|
if (!catchblock->type_info || !catchblock->type_info->mangled[0]) return;
|
|
if (!catchblock->offset) return;
|
|
dest_ptr = (void **)((char *)&frame->ebp + catchblock->offset);
|
|
|
|
if (catchblock->flags & TYPE_FLAG_REFERENCE)
|
|
{
|
|
*dest_ptr = get_this_pointer( &type->offsets, object );
|
|
}
|
|
else if (type->flags & CLASS_IS_SIMPLE_TYPE)
|
|
{
|
|
memmove( dest_ptr, object, type->size );
|
|
/* if it is a pointer, adjust it */
|
|
if (type->size == sizeof(void *)) *dest_ptr = get_this_pointer( &type->offsets, *dest_ptr );
|
|
}
|
|
else /* copy the object */
|
|
{
|
|
if (type->copy_ctor)
|
|
call_copy_ctor( type->copy_ctor, dest_ptr, get_this_pointer(&type->offsets,object),
|
|
(type->flags & CLASS_HAS_VIRTUAL_BASE_CLASS) );
|
|
else
|
|
memmove( dest_ptr, get_this_pointer(&type->offsets,object), type->size );
|
|
}
|
|
}
|
|
|
|
/* unwind the local function up to a given trylevel */
|
|
static void cxx_local_unwind( cxx_exception_frame* frame, const cxx_function_descr *descr, int last_level)
|
|
{
|
|
void (*handler)(void);
|
|
int trylevel = frame->trylevel;
|
|
|
|
while (trylevel != last_level)
|
|
{
|
|
if (trylevel < 0 || trylevel >= descr->unwind_count)
|
|
{
|
|
ERR( "invalid trylevel %d\n", trylevel );
|
|
MSVCRT_terminate();
|
|
}
|
|
handler = descr->unwind_table[trylevel].handler;
|
|
if (handler)
|
|
{
|
|
TRACE( "calling unwind handler %p trylevel %d last %d ebp %p\n",
|
|
handler, trylevel, last_level, &frame->ebp );
|
|
call_ebp_func( handler, &frame->ebp );
|
|
}
|
|
trylevel = descr->unwind_table[trylevel].prev;
|
|
}
|
|
frame->trylevel = last_level;
|
|
}
|
|
|
|
/* exception frame for nested exceptions in catch block */
|
|
struct catch_func_nested_frame
|
|
{
|
|
EXCEPTION_REGISTRATION_RECORD frame; /* standard exception frame */
|
|
EXCEPTION_RECORD *prev_rec; /* previous record to restore in thread data */
|
|
cxx_exception_frame *cxx_frame; /* frame of parent exception */
|
|
const cxx_function_descr *descr; /* descriptor of parent exception */
|
|
int trylevel; /* current try level */
|
|
EXCEPTION_RECORD *rec; /* rec associated with frame */
|
|
};
|
|
|
|
/* handler for exceptions happening while calling a catch function */
|
|
static DWORD catch_function_nested_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
|
|
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
|
|
{
|
|
struct catch_func_nested_frame *nested_frame = (struct catch_func_nested_frame *)frame;
|
|
|
|
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
|
|
{
|
|
msvcrt_get_thread_data()->exc_record = nested_frame->prev_rec;
|
|
return ExceptionContinueSearch;
|
|
}
|
|
|
|
TRACE( "got nested exception in catch function\n" );
|
|
|
|
if(rec->ExceptionCode == CXX_EXCEPTION)
|
|
{
|
|
PEXCEPTION_RECORD prev_rec = nested_frame->rec;
|
|
if((rec->ExceptionInformation[1] == 0 && rec->ExceptionInformation[2] == 0) ||
|
|
(rec->ExceptionInformation[1] == prev_rec->ExceptionInformation[1] &&
|
|
rec->ExceptionInformation[2] == prev_rec->ExceptionInformation[2]))
|
|
{
|
|
/* exception was rethrown */
|
|
rec->ExceptionInformation[1] = prev_rec->ExceptionInformation[1];
|
|
rec->ExceptionInformation[2] = prev_rec->ExceptionInformation[2];
|
|
TRACE("detect rethrow: re-propagate: obj: %lx, type: %lx\n",
|
|
rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
|
|
}
|
|
else if (nested_frame->prev_rec &&
|
|
nested_frame->prev_rec->ExceptionInformation[1] == prev_rec->ExceptionInformation[1] &&
|
|
nested_frame->prev_rec->ExceptionInformation[2] == prev_rec->ExceptionInformation[2])
|
|
{
|
|
TRACE("detect threw new exception in catch block - not owning old(obj: %lx type: %lx)\n",
|
|
prev_rec->ExceptionInformation[1], prev_rec->ExceptionInformation[2]);
|
|
}
|
|
else {
|
|
/* new exception in exception handler, destroy old */
|
|
void *object = (void*)prev_rec->ExceptionInformation[1];
|
|
cxx_exception_type *info = (cxx_exception_type*) prev_rec->ExceptionInformation[2];
|
|
TRACE("detect threw new exception in catch block - destroy old(obj: %p type: %p)\n",
|
|
object, info);
|
|
if(info && info->destructor)
|
|
call_dtor( info->destructor, object );
|
|
}
|
|
}
|
|
|
|
return cxx_frame_handler( rec, nested_frame->cxx_frame, context,
|
|
NULL, nested_frame->descr, &nested_frame->frame,
|
|
nested_frame->trylevel );
|
|
}
|
|
|
|
/* find and call the appropriate catch block for an exception */
|
|
/* returns the address to continue execution to after the catch block was called */
|
|
static inline void call_catch_block( PEXCEPTION_RECORD rec, cxx_exception_frame *frame,
|
|
const cxx_function_descr *descr, int nested_trylevel,
|
|
cxx_exception_type *info )
|
|
{
|
|
UINT i;
|
|
int j;
|
|
void *addr, *object = (void *)rec->ExceptionInformation[1];
|
|
struct catch_func_nested_frame nested_frame;
|
|
int trylevel = frame->trylevel;
|
|
thread_data_t *thread_data = msvcrt_get_thread_data();
|
|
DWORD save_esp = ((DWORD*)frame)[-1];
|
|
|
|
for (i = 0; i < descr->tryblock_count; i++)
|
|
{
|
|
const tryblock_info *tryblock = &descr->tryblock[i];
|
|
|
|
if (trylevel < tryblock->start_level) continue;
|
|
if (trylevel > tryblock->end_level) continue;
|
|
|
|
/* got a try block */
|
|
for (j = 0; j < tryblock->catchblock_count; j++)
|
|
{
|
|
const catchblock_info *catchblock = &tryblock->catchblock[j];
|
|
if(info)
|
|
{
|
|
const cxx_type_info *type = find_caught_type( info, catchblock );
|
|
if (!type) continue;
|
|
|
|
TRACE( "matched type %p in tryblock %d catchblock %d\n", type, i, j );
|
|
|
|
/* copy the exception to its destination on the stack */
|
|
copy_exception( object, frame, catchblock, type );
|
|
}
|
|
else
|
|
{
|
|
/* no CXX_EXCEPTION only proceed with a catch(...) block*/
|
|
if(catchblock->type_info)
|
|
continue;
|
|
TRACE("found catch(...) block\n");
|
|
}
|
|
|
|
/* unwind the stack */
|
|
RtlUnwind( frame, 0, rec, 0 );
|
|
cxx_local_unwind( frame, descr, tryblock->start_level );
|
|
frame->trylevel = tryblock->end_level + 1;
|
|
|
|
/* call the catch block */
|
|
TRACE( "calling catch block %p addr %p ebp %p\n",
|
|
catchblock, catchblock->handler, &frame->ebp );
|
|
|
|
/* setup an exception block for nested exceptions */
|
|
|
|
nested_frame.frame.Handler = catch_function_nested_handler;
|
|
nested_frame.prev_rec = thread_data->exc_record;
|
|
nested_frame.cxx_frame = frame;
|
|
nested_frame.descr = descr;
|
|
nested_frame.trylevel = nested_trylevel + 1;
|
|
nested_frame.rec = rec;
|
|
|
|
__wine_push_frame( &nested_frame.frame );
|
|
thread_data->exc_record = rec;
|
|
addr = call_ebp_func( catchblock->handler, &frame->ebp );
|
|
thread_data->exc_record = nested_frame.prev_rec;
|
|
__wine_pop_frame( &nested_frame.frame );
|
|
|
|
((DWORD*)frame)[-1] = save_esp;
|
|
if (info && info->destructor) call_dtor( info->destructor, object );
|
|
TRACE( "done, continuing at %p\n", addr );
|
|
|
|
continue_after_catch( frame, addr );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
* cxx_frame_handler
|
|
*
|
|
* Implementation of __CxxFrameHandler.
|
|
*/
|
|
DWORD CDECL cxx_frame_handler( PEXCEPTION_RECORD rec, cxx_exception_frame* frame,
|
|
PCONTEXT context, EXCEPTION_REGISTRATION_RECORD** dispatch,
|
|
const cxx_function_descr *descr,
|
|
EXCEPTION_REGISTRATION_RECORD* nested_frame,
|
|
int nested_trylevel )
|
|
{
|
|
cxx_exception_type *exc_type;
|
|
|
|
if (descr->magic < CXX_FRAME_MAGIC_VC6 || descr->magic > CXX_FRAME_MAGIC_VC8)
|
|
{
|
|
ERR( "invalid frame magic %x\n", descr->magic );
|
|
return ExceptionContinueSearch;
|
|
}
|
|
if (descr->magic >= CXX_FRAME_MAGIC_VC8 &&
|
|
(descr->flags & FUNC_DESCR_SYNCHRONOUS) &&
|
|
(rec->ExceptionCode != CXX_EXCEPTION))
|
|
return ExceptionContinueSearch; /* handle only c++ exceptions */
|
|
|
|
if (rec->ExceptionFlags & (EH_UNWINDING|EH_EXIT_UNWIND))
|
|
{
|
|
if (descr->unwind_count && !nested_trylevel) cxx_local_unwind( frame, descr, -1 );
|
|
return ExceptionContinueSearch;
|
|
}
|
|
if (!descr->tryblock_count) return ExceptionContinueSearch;
|
|
|
|
if(rec->ExceptionCode == CXX_EXCEPTION)
|
|
{
|
|
if (rec->ExceptionInformation[1] == 0 && rec->ExceptionInformation[2] == 0)
|
|
{
|
|
EXCEPTION_RECORD *exc_record = msvcrt_get_thread_data()->exc_record;
|
|
rec->ExceptionInformation[1] = exc_record->ExceptionInformation[1];
|
|
rec->ExceptionInformation[2] = exc_record->ExceptionInformation[2];
|
|
TRACE("detect rethrow: obj: %lx, type: %lx\n",
|
|
rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
|
|
}
|
|
|
|
exc_type = (cxx_exception_type *)rec->ExceptionInformation[2];
|
|
|
|
if (rec->ExceptionInformation[0] > CXX_FRAME_MAGIC_VC8 &&
|
|
exc_type->custom_handler)
|
|
{
|
|
return exc_type->custom_handler( rec, frame, context, dispatch,
|
|
descr, nested_trylevel, nested_frame, 0 );
|
|
}
|
|
|
|
if (TRACE_ON(seh))
|
|
{
|
|
TRACE("handling C++ exception rec %p frame %p trylevel %d descr %p nested_frame %p\n",
|
|
rec, frame, frame->trylevel, descr, nested_frame );
|
|
dump_exception_type( exc_type );
|
|
dump_function_descr( descr );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
exc_type = NULL;
|
|
TRACE("handling C exception code %x rec %p frame %p trylevel %d descr %p nested_frame %p\n",
|
|
rec->ExceptionCode, rec, frame, frame->trylevel, descr, nested_frame );
|
|
}
|
|
|
|
call_catch_block( rec, frame, descr, frame->trylevel, exc_type );
|
|
return ExceptionContinueSearch;
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
* __CxxFrameHandler (MSVCRT.@)
|
|
*/
|
|
extern DWORD CDECL __CxxFrameHandler( PEXCEPTION_RECORD rec, EXCEPTION_REGISTRATION_RECORD* frame,
|
|
PCONTEXT context, EXCEPTION_REGISTRATION_RECORD** dispatch );
|
|
__ASM_GLOBAL_FUNC( __CxxFrameHandler,
|
|
"pushl $0\n\t" /* nested_trylevel */
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
"pushl $0\n\t" /* nested_frame */
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
"pushl %eax\n\t" /* descr */
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
"pushl 28(%esp)\n\t" /* dispatch */
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
"pushl 28(%esp)\n\t" /* context */
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
"pushl 28(%esp)\n\t" /* frame */
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
"pushl 28(%esp)\n\t" /* rec */
|
|
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
|
|
"call " __ASM_NAME("cxx_frame_handler") "\n\t"
|
|
"add $28,%esp\n\t"
|
|
__ASM_CFI(".cfi_adjust_cfa_offset -28\n\t")
|
|
"ret" )
|
|
|
|
|
|
/*********************************************************************
|
|
* __CxxLongjmpUnwind (MSVCRT.@)
|
|
*
|
|
* Callback meant to be used as UnwindFunc for setjmp/longjmp.
|
|
*/
|
|
void __stdcall __CxxLongjmpUnwind( const struct MSVCRT___JUMP_BUFFER *buf )
|
|
{
|
|
cxx_exception_frame *frame = (cxx_exception_frame *)buf->Registration;
|
|
const cxx_function_descr *descr = (const cxx_function_descr *)buf->UnwindData[0];
|
|
|
|
TRACE( "unwinding frame %p descr %p trylevel %ld\n", frame, descr, buf->TryLevel );
|
|
cxx_local_unwind( frame, descr, buf->TryLevel );
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CppXcptFilter (MSVCRT.@)
|
|
*/
|
|
int CDECL __CppXcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr)
|
|
{
|
|
/* only filter c++ exceptions */
|
|
if (ex != CXX_EXCEPTION) return EXCEPTION_CONTINUE_SEARCH;
|
|
return _XcptFilter( ex, ptr );
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxDetectRethrow (MSVCRT.@)
|
|
*/
|
|
BOOL CDECL __CxxDetectRethrow(PEXCEPTION_POINTERS ptrs)
|
|
{
|
|
PEXCEPTION_RECORD rec;
|
|
|
|
if (!ptrs)
|
|
return FALSE;
|
|
|
|
rec = ptrs->ExceptionRecord;
|
|
|
|
if (rec->ExceptionCode == CXX_EXCEPTION &&
|
|
rec->NumberParameters == 3 &&
|
|
rec->ExceptionInformation[0] == CXX_FRAME_MAGIC_VC6 &&
|
|
rec->ExceptionInformation[2])
|
|
{
|
|
ptrs->ExceptionRecord = msvcrt_get_thread_data()->exc_record;
|
|
return TRUE;
|
|
}
|
|
return (msvcrt_get_thread_data()->exc_record == rec);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxQueryExceptionSize (MSVCRT.@)
|
|
*/
|
|
unsigned int CDECL __CxxQueryExceptionSize(void)
|
|
{
|
|
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__ */
|