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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
*/
#include "config.h"
#include "wine/port.h"
#ifdef __x86_64__
#include <stdarg.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);
struct _DISPATCHER_CONTEXT;
typedef LONG (WINAPI *PC_LANGUAGE_EXCEPTION_HANDLER)( EXCEPTION_POINTERS *ptrs, ULONG64 frame );
typedef EXCEPTION_DISPOSITION (WINAPI *PEXCEPTION_ROUTINE)( EXCEPTION_RECORD *rec,
ULONG64 frame,
CONTEXT *context,
struct _DISPATCHER_CONTEXT *dispatch );
typedef struct _DISPATCHER_CONTEXT
{
ULONG64 ControlPc;
ULONG64 ImageBase;
PRUNTIME_FUNCTION FunctionEntry;
ULONG64 EstablisherFrame;
ULONG64 TargetIp;
PCONTEXT ContextRecord;
PEXCEPTION_ROUTINE LanguageHandler;
PVOID HandlerData;
PUNWIND_HISTORY_TABLE HistoryTable;
ULONG ScopeIndex;
} DISPATCHER_CONTEXT;
typedef struct
{
int prev;
UINT handler;
} unwind_info;
typedef struct
{
UINT flags;
UINT type_info;
int offset;
UINT handler;
} catchblock_info;
typedef struct
{
int start_level;
int end_level;
int catch_level;
int catchblock_count;
UINT catchblock;
} tryblock_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;
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);
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) type %x %s\n",
j, catchblock->flags, catchblock->offset, catchblock->handler,
rva_to_ptr(catchblock->handler, image_base), catchblock->type_info,
dbgstr_type_info(rva_to_ptr(catchblock->type_info, image_base)));
}
}
TRACE("unwind_help %d\n", descr->unwind_help);
TRACE("expect list: %x\n", descr->expect_list);
TRACE("flags: %08x\n", descr->flags);
}
static DWORD cxx_frame_handler(EXCEPTION_RECORD *rec, ULONG64 frame,
CONTEXT *context, DISPATCHER_CONTEXT *dispatch,
const cxx_function_descr *descr)
{
cxx_exception_type *exc_type;
if (descr->magic != CXX_FRAME_MAGIC_VC8)
{
FIXME("unhandled frame magic %x\n", descr->magic);
return ExceptionContinueSearch;
}
if (rec->ExceptionFlags & (EH_UNWINDING|EH_EXIT_UNWIND))
return ExceptionContinueSearch;
if (!descr->tryblock_count) return ExceptionContinueSearch;
if (rec->ExceptionCode == CXX_EXCEPTION &&
rec->ExceptionInformation[1] == 0 && rec->ExceptionInformation[2] == 0)
{
*rec = *msvcrt_get_thread_data()->exc_record;
rec->ExceptionFlags &= ~EH_UNWINDING;
if (TRACE_ON(seh)) {
TRACE("detect rethrow: exception code: %x\n", rec->ExceptionCode);
if (rec->ExceptionCode == CXX_EXCEPTION)
TRACE("re-propage: obj: %lx, type: %lx\n",
rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
}
}
if (rec->ExceptionCode == CXX_EXCEPTION)
{
exc_type = (cxx_exception_type *)rec->ExceptionInformation[2];
if (TRACE_ON(seh))
{
TRACE("handling C++ exception rec %p frame %lx unwind_help %d descr %p\n",
rec, frame, *((INT*)(frame+descr->unwind_help)), descr);
dump_exception_type(exc_type, rec->ExceptionInformation[3]);
dump_function_descr(descr, dispatch->ImageBase);
}
}
else
{
exc_type = NULL;
TRACE("handling C exception code %x rec %p frame %lx unwind_help %d descr %p\n",
rec->ExceptionCode, rec, frame, *((INT*)(frame+descr->unwind_help)), descr);
}
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 )
{
FIXME( "%p %lx %p %p: not implemented\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,
"xorq %rdx,%rdx\n\t" /* frame */
"jmp " __ASM_NAME("MSVCRT__setjmpex") );
/*******************************************************************
* _setjmpex (MSVCRT.@)
*/
__ASM_GLOBAL_FUNC( MSVCRT__setjmpex,
"movq %rdx,(%rcx)\n\t" /* jmp_buf->Frame */
"movq %rbx,0x8(%rcx)\n\t" /* jmp_buf->Rbx */
"leaq 0x8(%rsp),%rax\n\t"
"movq %rax,0x10(%rcx)\n\t" /* jmp_buf->Rsp */
"movq %rbp,0x18(%rcx)\n\t" /* jmp_buf->Rbp */
"movq %rsi,0x20(%rcx)\n\t" /* jmp_buf->Rsi */
"movq %rdi,0x28(%rcx)\n\t" /* jmp_buf->Rdi */
"movq %r12,0x30(%rcx)\n\t" /* jmp_buf->R12 */
"movq %r13,0x38(%rcx)\n\t" /* jmp_buf->R13 */
"movq %r14,0x40(%rcx)\n\t" /* jmp_buf->R14 */
"movq %r15,0x48(%rcx)\n\t" /* jmp_buf->R15 */
"movq (%rsp),%rax\n\t"
"movq %rax,0x50(%rcx)\n\t" /* jmp_buf->Rip */
"movdqa %xmm6,0x60(%rcx)\n\t" /* jmp_buf->Xmm6 */
"movdqa %xmm7,0x70(%rcx)\n\t" /* jmp_buf->Xmm7 */
"movdqa %xmm8,0x80(%rcx)\n\t" /* jmp_buf->Xmm8 */
"movdqa %xmm9,0x90(%rcx)\n\t" /* jmp_buf->Xmm9 */
"movdqa %xmm10,0xa0(%rcx)\n\t" /* jmp_buf->Xmm10 */
"movdqa %xmm11,0xb0(%rcx)\n\t" /* jmp_buf->Xmm11 */
"movdqa %xmm12,0xc0(%rcx)\n\t" /* jmp_buf->Xmm12 */
"movdqa %xmm13,0xd0(%rcx)\n\t" /* jmp_buf->Xmm13 */
"movdqa %xmm14,0xe0(%rcx)\n\t" /* jmp_buf->Xmm14 */
"movdqa %xmm15,0xf0(%rcx)\n\t" /* jmp_buf->Xmm15 */
"xorq %rax,%rax\n\t"
"retq" );
extern void DECLSPEC_NORETURN CDECL longjmp_set_regs( struct MSVCRT___JUMP_BUFFER *jmp, int retval );
__ASM_GLOBAL_FUNC( longjmp_set_regs,
"movq %rdx,%rax\n\t" /* retval */
"movq 0x8(%rcx),%rbx\n\t" /* jmp_buf->Rbx */
"movq 0x18(%rcx),%rbp\n\t" /* jmp_buf->Rbp */
"movq 0x20(%rcx),%rsi\n\t" /* jmp_buf->Rsi */
"movq 0x28(%rcx),%rdi\n\t" /* jmp_buf->Rdi */
"movq 0x30(%rcx),%r12\n\t" /* jmp_buf->R12 */
"movq 0x38(%rcx),%r13\n\t" /* jmp_buf->R13 */
"movq 0x40(%rcx),%r14\n\t" /* jmp_buf->R14 */
"movq 0x48(%rcx),%r15\n\t" /* jmp_buf->R15 */
"movdqa 0x60(%rcx),%xmm6\n\t" /* jmp_buf->Xmm6 */
"movdqa 0x70(%rcx),%xmm7\n\t" /* jmp_buf->Xmm7 */
"movdqa 0x80(%rcx),%xmm8\n\t" /* jmp_buf->Xmm8 */
"movdqa 0x90(%rcx),%xmm9\n\t" /* jmp_buf->Xmm9 */
"movdqa 0xa0(%rcx),%xmm10\n\t" /* jmp_buf->Xmm10 */
"movdqa 0xb0(%rcx),%xmm11\n\t" /* jmp_buf->Xmm11 */
"movdqa 0xc0(%rcx),%xmm12\n\t" /* jmp_buf->Xmm12 */
"movdqa 0xd0(%rcx),%xmm13\n\t" /* jmp_buf->Xmm13 */
"movdqa 0xe0(%rcx),%xmm14\n\t" /* jmp_buf->Xmm14 */
"movdqa 0xf0(%rcx),%xmm15\n\t" /* jmp_buf->Xmm15 */
"movq 0x50(%rcx),%rdx\n\t" /* jmp_buf->Rip */
"movq 0x10(%rcx),%rsp\n\t" /* jmp_buf->Rsp */
"jmp *%rdx" );
/*******************************************************************
* longjmp (MSVCRT.@)
*/
void __cdecl MSVCRT_longjmp( struct MSVCRT___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) );
}
longjmp_set_regs( jmp, retval );
}
/*******************************************************************
* _local_unwind (MSVCRT.@)
*/
void __cdecl _local_unwind( void *frame, void *target )
{
RtlUnwind( frame, target, NULL, 0 );
}
#endif /* __x86_64__ */
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