Sweden-Number/dlls/msvcrt/except_x86_64.c

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/*
* msvcrt C++ exception handling
*
* Copyright 2011 Alexandre Julliard
*
* 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
*/
#ifdef __x86_64__
#include <setjmp.h>
#include <stdarg.h>
#include <fpieee.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#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);
typedef struct
{
int prev;
UINT handler;
} unwind_info;
typedef struct
{
UINT flags;
UINT type_info;
int offset;
UINT handler;
UINT frame;
} catchblock_info;
#define TYPE_FLAG_CONST 1
#define TYPE_FLAG_VOLATILE 2
#define TYPE_FLAG_REFERENCE 8
typedef struct
{
int start_level;
int end_level;
int catch_level;
int catchblock_count;
UINT catchblock;
} tryblock_info;
typedef struct
{
int ip;
int state;
} ipmap_info;
typedef struct __cxx_function_descr
{
UINT magic;
UINT unwind_count;
UINT unwind_table;
UINT tryblock_count;
UINT tryblock;
UINT ipmap_count;
UINT ipmap;
UINT unwind_help;
UINT expect_list;
UINT flags;
} cxx_function_descr;
typedef struct
{
cxx_frame_info frame_info;
BOOL rethrow;
EXCEPTION_RECORD *prev_rec;
} cxx_catch_ctx;
typedef struct
{
ULONG64 dest_frame;
ULONG64 orig_frame;
EXCEPTION_RECORD *seh_rec;
DISPATCHER_CONTEXT *dispatch;
const cxx_function_descr *descr;
} se_translator_ctx;
static inline void* rva_to_ptr(UINT rva, ULONG64 base)
{
return rva ? (void*)(base+rva) : NULL;
}
static inline void dump_type(UINT type_rva, ULONG64 base)
{
const cxx_type_info *type = rva_to_ptr(type_rva, base);
TRACE("flags %x type %x %s offsets %d,%d,%d size %d copy ctor %x(%p)\n",
type->flags, type->type_info, dbgstr_type_info(rva_to_ptr(type->type_info, base)),
type->offsets.this_offset, type->offsets.vbase_descr, type->offsets.vbase_offset,
type->size, type->copy_ctor, rva_to_ptr(type->copy_ctor, base));
}
static void dump_exception_type(const cxx_exception_type *type, ULONG64 base)
{
const cxx_type_info_table *type_info_table = rva_to_ptr(type->type_info_table, base);
UINT i;
TRACE("flags %x destr %x(%p) handler %x(%p) type info %x(%p)\n",
type->flags, type->destructor, rva_to_ptr(type->destructor, base),
type->custom_handler, rva_to_ptr(type->custom_handler, base),
type->type_info_table, type_info_table);
for (i = 0; i < type_info_table->count; i++)
{
TRACE(" %d: ", i);
dump_type(type_info_table->info[i], base);
}
}
static void dump_function_descr(const cxx_function_descr *descr, ULONG64 image_base)
{
unwind_info *unwind_table = rva_to_ptr(descr->unwind_table, image_base);
tryblock_info *tryblock = rva_to_ptr(descr->tryblock, image_base);
ipmap_info *ipmap = rva_to_ptr(descr->ipmap, image_base);
UINT i, j;
TRACE("magic %x\n", descr->magic);
TRACE("unwind table: %x(%p) %d\n", descr->unwind_table, unwind_table, descr->unwind_count);
for (i=0; i<descr->unwind_count; i++)
{
TRACE(" %d: prev %d func %x(%p)\n", i, unwind_table[i].prev,
unwind_table[i].handler, rva_to_ptr(unwind_table[i].handler, image_base));
}
TRACE("try table: %x(%p) %d\n", descr->tryblock, tryblock, descr->tryblock_count);
for (i=0; i<descr->tryblock_count; i++)
{
catchblock_info *catchblock = rva_to_ptr(tryblock[i].catchblock, image_base);
TRACE(" %d: start %d end %d catchlevel %d catch %x(%p) %d\n", i,
tryblock[i].start_level, tryblock[i].end_level,
tryblock[i].catch_level, tryblock[i].catchblock,
catchblock, tryblock[i].catchblock_count);
for (j=0; j<tryblock[i].catchblock_count; j++)
{
TRACE(" %d: flags %x offset %d handler %x(%p) frame %x type %x %s\n",
j, catchblock[j].flags, catchblock[j].offset, catchblock[j].handler,
rva_to_ptr(catchblock[j].handler, image_base), catchblock[j].frame,
catchblock[j].type_info,
dbgstr_type_info(rva_to_ptr(catchblock[j].type_info, image_base)));
}
}
TRACE("ipmap: %x(%p) %d\n", descr->ipmap, ipmap, descr->ipmap_count);
for (i=0; i<descr->ipmap_count; i++)
{
TRACE(" %d: ip %x state %d\n", i, ipmap[i].ip, ipmap[i].state);
}
TRACE("unwind_help %d\n", descr->unwind_help);
if (descr->magic <= CXX_FRAME_MAGIC_VC6) return;
TRACE("expect list: %x\n", descr->expect_list);
if (descr->magic <= CXX_FRAME_MAGIC_VC7) return;
TRACE("flags: %08x\n", descr->flags);
}
static inline int ip_to_state(ipmap_info *ipmap, UINT count, int ip)
{
UINT low = 0, high = count-1, med;
while (low < high) {
med = low + (high-low)/2;
if (ipmap[med].ip <= ip && ipmap[med+1].ip > ip)
{
low = med;
break;
}
if (ipmap[med].ip < ip) low = med+1;
else high = med-1;
}
TRACE("%x -> %d\n", ip, ipmap[low].state);
return ipmap[low].state;
}
/* 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, ULONG64 exc_base,
const type_info *catch_ti, UINT catch_flags)
{
const cxx_type_info_table *type_info_table = rva_to_ptr(exc_type->type_info_table, exc_base);
UINT i;
for (i = 0; i < type_info_table->count; i++)
{
const cxx_type_info *type = rva_to_ptr(type_info_table->info[i], exc_base);
const type_info *ti = rva_to_ptr(type->type_info, exc_base);
if (!catch_ti) return type; /* catch(...) matches any type */
if (catch_ti != ti)
{
if (strcmp( catch_ti->mangled, ti->mangled )) continue;
}
/* type is the same, now check the flags */
if ((exc_type->flags & TYPE_FLAG_CONST) &&
!(catch_flags & TYPE_FLAG_CONST)) continue;
if ((exc_type->flags & TYPE_FLAG_VOLATILE) &&
!(catch_flags & TYPE_FLAG_VOLATILE)) continue;
return type; /* it matched */
}
return NULL;
}
static inline void copy_exception(void *object, ULONG64 frame,
DISPATCHER_CONTEXT *dispatch,
const catchblock_info *catchblock,
const cxx_type_info *type, ULONG64 exc_base)
{
const type_info *catch_ti = rva_to_ptr(catchblock->type_info, dispatch->ImageBase);
void **dest = rva_to_ptr(catchblock->offset, frame);
if (!catch_ti || !catch_ti->mangled[0]) return;
if (!catchblock->offset) return;
if (catchblock->flags & TYPE_FLAG_REFERENCE)
{
*dest = get_this_pointer(&type->offsets, object);
}
else if (type->flags & CLASS_IS_SIMPLE_TYPE)
{
memmove(dest, object, type->size);
/* if it is a pointer, adjust it */
if (type->size == sizeof(void*)) *dest = get_this_pointer(&type->offsets, *dest);
}
else /* copy the object */
{
if (type->copy_ctor)
{
if (type->flags & CLASS_HAS_VIRTUAL_BASE_CLASS)
{
void (__cdecl *copy_ctor)(void*, void*, int) =
rva_to_ptr(type->copy_ctor, exc_base);
copy_ctor(dest, get_this_pointer(&type->offsets, object), 1);
}
else
{
void (__cdecl *copy_ctor)(void*, void*) =
rva_to_ptr(type->copy_ctor, exc_base);
copy_ctor(dest, get_this_pointer(&type->offsets, object));
}
}
else
memmove(dest, get_this_pointer(&type->offsets,object), type->size);
}
}
static void cxx_local_unwind(ULONG64 frame, DISPATCHER_CONTEXT *dispatch,
const cxx_function_descr *descr, int last_level)
{
const unwind_info *unwind_table = rva_to_ptr(descr->unwind_table, dispatch->ImageBase);
void (__cdecl *handler)(ULONG64 unk, ULONG64 rbp);
int *unwind_help = rva_to_ptr(descr->unwind_help, frame);
int trylevel;
if (unwind_help[0] == -2)
{
trylevel = ip_to_state(rva_to_ptr(descr->ipmap, dispatch->ImageBase),
descr->ipmap_count, dispatch->ControlPc-dispatch->ImageBase);
}
else
{
trylevel = unwind_help[0];
}
TRACE("current level: %d, last level: %d\n", trylevel, last_level);
while (trylevel > last_level)
{
if (trylevel<0 || trylevel>=descr->unwind_count)
{
ERR("invalid trylevel %d\n", trylevel);
terminate();
}
handler = rva_to_ptr(unwind_table[trylevel].handler, dispatch->ImageBase);
if (handler)
{
TRACE("handler: %p\n", handler);
handler(0, frame);
}
trylevel = unwind_table[trylevel].prev;
}
unwind_help[0] = trylevel;
}
static LONG CALLBACK cxx_rethrow_filter(PEXCEPTION_POINTERS eptrs, void *c)
{
EXCEPTION_RECORD *rec = eptrs->ExceptionRecord;
cxx_catch_ctx *ctx = c;
if (rec->ExceptionCode != CXX_EXCEPTION)
return EXCEPTION_CONTINUE_SEARCH;
if (!rec->ExceptionInformation[1] && !rec->ExceptionInformation[2])
return EXCEPTION_EXECUTE_HANDLER;
if (rec->ExceptionInformation[1] == ctx->prev_rec->ExceptionInformation[1])
ctx->rethrow = TRUE;
return EXCEPTION_CONTINUE_SEARCH;
}
static void CALLBACK cxx_catch_cleanup(BOOL normal, void *c)
{
cxx_catch_ctx *ctx = c;
__CxxUnregisterExceptionObject(&ctx->frame_info, ctx->rethrow);
}
static void* WINAPI call_catch_block(EXCEPTION_RECORD *rec)
{
ULONG64 frame = rec->ExceptionInformation[1];
const cxx_function_descr *descr = (void*)rec->ExceptionInformation[2];
EXCEPTION_RECORD *prev_rec = (void*)rec->ExceptionInformation[4];
EXCEPTION_RECORD *untrans_rec = (void*)rec->ExceptionInformation[6];
CONTEXT *context = (void*)rec->ExceptionInformation[7];
void* (__cdecl *handler)(ULONG64 unk, ULONG64 rbp) = (void*)rec->ExceptionInformation[5];
int *unwind_help = rva_to_ptr(descr->unwind_help, frame);
EXCEPTION_POINTERS ep = { prev_rec, context };
cxx_catch_ctx ctx;
void *ret_addr = NULL;
TRACE("calling handler %p\n", handler);
ctx.rethrow = FALSE;
ctx.prev_rec = prev_rec;
__CxxRegisterExceptionObject(&ep, &ctx.frame_info);
msvcrt_get_thread_data()->processing_throw--;
__TRY
{
__TRY
{
ret_addr = handler(0, frame);
}
__EXCEPT_CTX(cxx_rethrow_filter, &ctx)
{
TRACE("detect rethrow: exception code: %x\n", prev_rec->ExceptionCode);
ctx.rethrow = TRUE;
if (untrans_rec)
{
__DestructExceptionObject(prev_rec);
RaiseException(untrans_rec->ExceptionCode, untrans_rec->ExceptionFlags,
untrans_rec->NumberParameters, untrans_rec->ExceptionInformation);
}
else
{
RaiseException(prev_rec->ExceptionCode, prev_rec->ExceptionFlags,
prev_rec->NumberParameters, prev_rec->ExceptionInformation);
}
}
__ENDTRY
}
__FINALLY_CTX(cxx_catch_cleanup, &ctx)
unwind_help[0] = -2;
unwind_help[1] = -1;
return ret_addr;
}
static inline BOOL cxx_is_consolidate(const EXCEPTION_RECORD *rec)
{
return rec->ExceptionCode==STATUS_UNWIND_CONSOLIDATE && rec->NumberParameters==8 &&
rec->ExceptionInformation[0]==(ULONG_PTR)call_catch_block;
}
static inline void find_catch_block(EXCEPTION_RECORD *rec, CONTEXT *context,
EXCEPTION_RECORD *untrans_rec,
ULONG64 frame, DISPATCHER_CONTEXT *dispatch,
const cxx_function_descr *descr,
cxx_exception_type *info, ULONG64 orig_frame)
{
ULONG64 exc_base = (rec->NumberParameters == 4 ? rec->ExceptionInformation[3] : 0);
int trylevel = ip_to_state(rva_to_ptr(descr->ipmap, dispatch->ImageBase),
descr->ipmap_count, dispatch->ControlPc-dispatch->ImageBase);
thread_data_t *data = msvcrt_get_thread_data();
const tryblock_info *in_catch;
EXCEPTION_RECORD catch_record;
CONTEXT ctx;
UINT i, j;
INT *unwind_help;
data->processing_throw++;
for (i=descr->tryblock_count; i>0; i--)
{
in_catch = rva_to_ptr(descr->tryblock, dispatch->ImageBase);
in_catch = &in_catch[i-1];
if (trylevel>in_catch->end_level && trylevel<=in_catch->catch_level)
break;
}
if (!i)
in_catch = NULL;
unwind_help = rva_to_ptr(descr->unwind_help, orig_frame);
if (trylevel > unwind_help[1])
unwind_help[0] = unwind_help[1] = trylevel;
else
trylevel = unwind_help[1];
TRACE("current trylevel: %d\n", trylevel);
for (i=0; i<descr->tryblock_count; i++)
{
const tryblock_info *tryblock = rva_to_ptr(descr->tryblock, dispatch->ImageBase);
tryblock = &tryblock[i];
if (trylevel < tryblock->start_level) continue;
if (trylevel > tryblock->end_level) continue;
if (in_catch)
{
if(tryblock->start_level <= in_catch->end_level) continue;
if(tryblock->end_level > in_catch->catch_level) continue;
}
/* got a try block */
for (j=0; j<tryblock->catchblock_count; j++)
{
const catchblock_info *catchblock = rva_to_ptr(tryblock->catchblock, dispatch->ImageBase);
catchblock = &catchblock[j];
if (info)
{
const cxx_type_info *type = find_caught_type(info, exc_base,
rva_to_ptr(catchblock->type_info, dispatch->ImageBase),
catchblock->flags);
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((void*)rec->ExceptionInformation[1],
orig_frame, dispatch, catchblock, type, exc_base);
}
else
{
/* no CXX_EXCEPTION only proceed with a catch(...) block*/
if (catchblock->type_info)
continue;
TRACE("found catch(...) block\n");
}
/* unwind stack and call catch */
memset(&catch_record, 0, sizeof(catch_record));
catch_record.ExceptionCode = STATUS_UNWIND_CONSOLIDATE;
catch_record.ExceptionFlags = EXCEPTION_NONCONTINUABLE;
catch_record.NumberParameters = 8;
catch_record.ExceptionInformation[0] = (ULONG_PTR)call_catch_block;
catch_record.ExceptionInformation[1] = orig_frame;
catch_record.ExceptionInformation[2] = (ULONG_PTR)descr;
catch_record.ExceptionInformation[3] = tryblock->start_level;
catch_record.ExceptionInformation[4] = (ULONG_PTR)rec;
catch_record.ExceptionInformation[5] =
(ULONG_PTR)rva_to_ptr(catchblock->handler, dispatch->ImageBase);
catch_record.ExceptionInformation[6] = (ULONG_PTR)untrans_rec;
catch_record.ExceptionInformation[7] = (ULONG_PTR)context;
RtlUnwindEx((void*)frame, (void*)dispatch->ControlPc, &catch_record, NULL, &ctx, NULL);
}
}
TRACE("no matching catch block found\n");
data->processing_throw--;
}
static LONG CALLBACK se_translation_filter(EXCEPTION_POINTERS *ep, void *c)
{
se_translator_ctx *ctx = (se_translator_ctx *)c;
EXCEPTION_RECORD *rec = ep->ExceptionRecord;
cxx_exception_type *exc_type;
if (rec->ExceptionCode != CXX_EXCEPTION)
{
TRACE("non-c++ exception thrown in SEH handler: %x\n", rec->ExceptionCode);
terminate();
}
exc_type = (cxx_exception_type *)rec->ExceptionInformation[2];
find_catch_block(rec, ep->ContextRecord, ctx->seh_rec, ctx->dest_frame, ctx->dispatch,
ctx->descr, exc_type, ctx->orig_frame);
__DestructExceptionObject(rec);
return ExceptionContinueSearch;
}
static void check_noexcept( PEXCEPTION_RECORD rec,
const cxx_function_descr *descr, BOOL nested )
{
if (!nested && rec->ExceptionCode == CXX_EXCEPTION &&
descr->magic >= CXX_FRAME_MAGIC_VC8 &&
(descr->flags & FUNC_DESCR_NOEXCEPT))
{
ERR("noexcept function propagating exception\n");
terminate();
}
}
static DWORD cxx_frame_handler(EXCEPTION_RECORD *rec, ULONG64 frame,
CONTEXT *context, DISPATCHER_CONTEXT *dispatch,
const cxx_function_descr *descr)
{
int trylevel = ip_to_state(rva_to_ptr(descr->ipmap, dispatch->ImageBase),
descr->ipmap_count, dispatch->ControlPc-dispatch->ImageBase);
cxx_exception_type *exc_type;
ULONG64 orig_frame = frame;
ULONG64 throw_base;
DWORD throw_func_off;
void *throw_func;
UINT i, j;
int unwindlevel = -1;
if (descr->magic<CXX_FRAME_MAGIC_VC6 || descr->magic>CXX_FRAME_MAGIC_VC8)
{
FIXME("unhandled frame magic %x\n", descr->magic);
return ExceptionContinueSearch;
}
if (descr->magic >= CXX_FRAME_MAGIC_VC8 &&
(descr->flags & FUNC_DESCR_SYNCHRONOUS) &&
(rec->ExceptionCode != CXX_EXCEPTION &&
!cxx_is_consolidate(rec) &&
rec->ExceptionCode != STATUS_LONGJUMP))
return ExceptionContinueSearch; /* handle only c++ exceptions */
/* update orig_frame if it's a nested exception */
throw_func_off = RtlLookupFunctionEntry(dispatch->ControlPc, &throw_base, NULL)->BeginAddress;
throw_func = rva_to_ptr(throw_func_off, throw_base);
TRACE("reconstructed handler pointer: %p\n", throw_func);
for (i=descr->tryblock_count; i>0; i--)
{
const tryblock_info *tryblock = rva_to_ptr(descr->tryblock, dispatch->ImageBase);
tryblock = &tryblock[i-1];
if (trylevel>tryblock->end_level && trylevel<=tryblock->catch_level)
{
for (j=0; j<tryblock->catchblock_count; j++)
{
const catchblock_info *catchblock = rva_to_ptr(tryblock->catchblock, dispatch->ImageBase);
catchblock = &catchblock[j];
if (rva_to_ptr(catchblock->handler, dispatch->ImageBase) == throw_func)
{
TRACE("nested exception detected\n");
unwindlevel = tryblock->end_level;
orig_frame = *(ULONG64*)rva_to_ptr(catchblock->frame, frame);
TRACE("setting orig_frame to %lx\n", orig_frame);
}
}
}
}
if (rec->ExceptionFlags & (EH_UNWINDING|EH_EXIT_UNWIND))
{
if (rec->ExceptionFlags & EH_TARGET_UNWIND)
cxx_local_unwind(orig_frame, dispatch, descr,
cxx_is_consolidate(rec) ? rec->ExceptionInformation[3] : trylevel);
else
cxx_local_unwind(orig_frame, dispatch, descr, unwindlevel);
return ExceptionContinueSearch;
}
if (!descr->tryblock_count)
{
check_noexcept(rec, descr, orig_frame != frame);
return ExceptionContinueSearch;
}
if (rec->ExceptionCode == CXX_EXCEPTION)
{
if (!rec->ExceptionInformation[1] && !rec->ExceptionInformation[2])
{
TRACE("rethrow detected.\n");
*rec = *msvcrt_get_thread_data()->exc_record;
}
exc_type = (cxx_exception_type *)rec->ExceptionInformation[2];
if (TRACE_ON(seh))
{
TRACE("handling C++ exception rec %p frame %lx descr %p\n", rec, frame, descr);
dump_exception_type(exc_type, rec->ExceptionInformation[3]);
dump_function_descr(descr, dispatch->ImageBase);
}
}
else
{
thread_data_t *data = msvcrt_get_thread_data();
exc_type = NULL;
TRACE("handling C exception code %x rec %p frame %lx descr %p\n",
rec->ExceptionCode, rec, frame, descr);
if (data->se_translator) {
EXCEPTION_POINTERS except_ptrs;
se_translator_ctx ctx;
ctx.dest_frame = frame;
ctx.orig_frame = orig_frame;
ctx.seh_rec = rec;
ctx.dispatch = dispatch;
ctx.descr = descr;
__TRY
{
except_ptrs.ExceptionRecord = rec;
except_ptrs.ContextRecord = context;
data->se_translator(rec->ExceptionCode, &except_ptrs);
}
__EXCEPT_CTX(se_translation_filter, &ctx)
{
}
__ENDTRY
}
}
find_catch_block(rec, context, NULL, frame, dispatch, descr, exc_type, orig_frame);
check_noexcept(rec, descr, orig_frame != frame);
return ExceptionContinueSearch;
}
/*********************************************************************
* __CxxExceptionFilter (MSVCRT.@)
*/
int CDECL __CxxExceptionFilter( PEXCEPTION_POINTERS ptrs,
const type_info *ti, int flags, void **copy )
{
FIXME( "%p %p %x %p: not implemented\n", ptrs, ti, flags, copy );
return EXCEPTION_CONTINUE_SEARCH;
}
/*********************************************************************
* __CxxFrameHandler (MSVCRT.@)
*/
EXCEPTION_DISPOSITION CDECL __CxxFrameHandler( EXCEPTION_RECORD *rec, ULONG64 frame,
CONTEXT *context, DISPATCHER_CONTEXT *dispatch )
{
TRACE( "%p %lx %p %p\n", rec, frame, context, dispatch );
return cxx_frame_handler( rec, frame, context, dispatch,
rva_to_ptr(*(UINT*)dispatch->HandlerData, dispatch->ImageBase) );
}
/*********************************************************************
* __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 == 4 &&
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);
}
/*******************************************************************
* _setjmp (MSVCRT.@)
*/
__ASM_GLOBAL_FUNC( MSVCRT__setjmp,
"jmp " __ASM_NAME("__wine_setjmpex") );
/*******************************************************************
* longjmp (MSVCRT.@)
*/
void __cdecl MSVCRT_longjmp( _JUMP_BUFFER *jmp, int retval )
{
EXCEPTION_RECORD rec;
if (!retval) retval = 1;
if (jmp->Frame)
{
rec.ExceptionCode = STATUS_LONGJUMP;
rec.ExceptionFlags = 0;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = NULL;
rec.NumberParameters = 1;
rec.ExceptionInformation[0] = (DWORD_PTR)jmp;
RtlUnwind( (void *)jmp->Frame, (void *)jmp->Rip, &rec, IntToPtr(retval) );
}
__wine_longjmp( (__wine_jmp_buf *)jmp, retval );
}
/*******************************************************************
* _local_unwind (MSVCRT.@)
*/
void __cdecl _local_unwind( void *frame, void *target )
{
RtlUnwind( frame, target, NULL, 0 );
}
/*********************************************************************
* _fpieee_flt (MSVCRT.@)
*/
int __cdecl _fpieee_flt(__msvcrt_ulong exception_code, EXCEPTION_POINTERS *ep,
int (__cdecl *handler)(_FPIEEE_RECORD*))
{
FIXME("(%lx %p %p) opcode: %s\n", exception_code, ep, handler,
wine_dbgstr_longlong(*(ULONG64*)ep->ContextRecord->Rip));
return EXCEPTION_CONTINUE_SEARCH;
}
#if _MSVCR_VER>=110 && _MSVCR_VER<=120
/*********************************************************************
* __crtCapturePreviousContext (MSVCR110.@)
*/
void __cdecl get_prev_context(CONTEXT *ctx, DWORD64 rip)
{
ULONG64 frame, image_base;
RUNTIME_FUNCTION *rf;
void *data;
TRACE("(%p)\n", ctx);
rf = RtlLookupFunctionEntry(ctx->Rip, &image_base, NULL);
if(!rf) {
FIXME("RtlLookupFunctionEntry failed\n");
return;
}
RtlVirtualUnwind(UNW_FLAG_NHANDLER, image_base, ctx->Rip,
rf, ctx, &data, &frame, NULL);
}
__ASM_GLOBAL_FUNC( __crtCapturePreviousContext,
"movq %rcx,8(%rsp)\n\t"
"call " __ASM_NAME("RtlCaptureContext") "\n\t"
"movq 8(%rsp),%rcx\n\t" /* context */
"leaq 8(%rsp),%rax\n\t"
"movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
"movq (%rsp),%rax\n\t"
"movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
"jmp " __ASM_NAME("get_prev_context") )
#endif
#endif /* __x86_64__ */