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ntdll: Implement __C_specific_handler for x86_64.

This commit is contained in:
Alexandre Julliard 2009-05-22 12:00:43 +02:00
parent ad7b282439
commit 2c63d1d7dd
2 changed files with 78 additions and 1 deletions
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1
dlls/ntdll/ntdll.spec
View File

@ -1231,6 +1231,7 @@
@ cdecl -private _CIpow() NTDLL__CIpow
# @ stub _CIsin
# @ stub _CIsqrt
@ stdcall -arch=x86_64 __C_specific_handler(ptr long ptr ptr)
# @ stub __isascii
# @ stub __iscsym
# @ stub __iscsymf

78
dlls/ntdll/signal_x86_64.c
View File

@ -54,6 +54,7 @@ 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,
@ -73,6 +74,18 @@ typedef struct _DISPATCHER_CONTEXT
ULONG ScopeIndex;
} DISPATCHER_CONTEXT, *PDISPATCHER_CONTEXT;
typedef struct _SCOPE_TABLE
{
ULONG Count;
struct
{
ULONG BeginAddress;
ULONG EndAddress;
ULONG HandlerAddress;
ULONG JumpTarget;
} ScopeRecord[1];
} SCOPE_TABLE, *PSCOPE_TABLE;
/***********************************************************************
* signal context platform-specific definitions
@ -322,6 +335,19 @@ static void dump_unwind_info( ULONG64 base, RUNTIME_FUNCTION *function )
}
}
static void dump_scope_table( ULONG64 base, const SCOPE_TABLE *table )
{
unsigned int i;
TRACE( "scope table at %p\n", table );
for (i = 0; i < table->Count; i++)
TRACE( " %u: %lx-%lx handler %lx target %lx\n", i,
base + table->ScopeRecord[i].BeginAddress,
base + table->ScopeRecord[i].EndAddress,
base + table->ScopeRecord[i].HandlerAddress,
base + table->ScopeRecord[i].JumpTarget );
}
/***********************************************************************
* dispatch_signal
*/
@ -1455,7 +1481,6 @@ void WINAPI RtlUnwindEx( ULONG64 frame, ULONG64 target_ip, EXCEPTION_RECORD *rec
rec->ExceptionFlags |= EH_UNWINDING | (frame ? 0 : EH_EXIT_UNWIND);
FIXME( "code=%x flags=%x not implemented on x86_64\n", rec->ExceptionCode, rec->ExceptionFlags );
NtTerminateProcess( GetCurrentProcess(), 1 );
}
@ -1470,6 +1495,57 @@ void WINAPI __regs_RtlUnwind( ULONG64 frame, ULONG64 target_ip, EXCEPTION_RECORD
DEFINE_REGS_ENTRYPOINT( RtlUnwind, 4 )
/*******************************************************************
* __C_specific_handler (NTDLL.@)
*/
EXCEPTION_DISPOSITION WINAPI __C_specific_handler( EXCEPTION_RECORD *rec,
ULONG64 frame,
CONTEXT *context,
struct _DISPATCHER_CONTEXT *dispatch )
{
SCOPE_TABLE *table = dispatch->HandlerData;
ULONG i;
TRACE( "%p %lx %p %p\n", rec, frame, context, dispatch );
if (TRACE_ON(seh)) dump_scope_table( dispatch->ImageBase, table );
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)) /* FIXME */
return ExceptionContinueSearch;
for (i = 0; i < table->Count; i++)
{
if (context->Rip >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
context->Rip < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
{
if (!table->ScopeRecord[i].JumpTarget) continue;
if (table->ScopeRecord[i].HandlerAddress != EXCEPTION_EXECUTE_HANDLER)
{
EXCEPTION_POINTERS ptrs;
PC_LANGUAGE_EXCEPTION_HANDLER filter;
filter = (PC_LANGUAGE_EXCEPTION_HANDLER)(dispatch->ImageBase + table->ScopeRecord[i].HandlerAddress);
ptrs.ExceptionRecord = rec;
ptrs.ContextRecord = context;
TRACE( "calling filter %p ptrs %p frame %lx\n", filter, &ptrs, frame );
switch (filter( &ptrs, frame ))
{
case EXCEPTION_EXECUTE_HANDLER:
break;
case EXCEPTION_CONTINUE_SEARCH:
continue;
case EXCEPTION_CONTINUE_EXECUTION:
return ExceptionContinueExecution;
}
}
TRACE( "unwinding to target %lx\n", dispatch->ImageBase + table->ScopeRecord[i].JumpTarget );
RtlUnwindEx( frame, dispatch->ImageBase + table->ScopeRecord[i].JumpTarget,
rec, 0, context, dispatch->HistoryTable );
}
}
return ExceptionContinueSearch;
}
/*******************************************************************
* NtRaiseException (NTDLL.@)
*/