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ntdll: Make __wine_call_from_32_restore_regs take a context pointer. 

Changed exception raise functions to call it explicitly.
oldstable
Alexandre Julliard 2005-12-19 09:59:50 +01:00
parent ed7aa80765
commit 8651ceb18e
2 changed files with 38 additions and 19 deletions
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55
dlls/ntdll/signal_i386.c
View File

@ -452,7 +452,7 @@ static size_t signal_stack_size;
static wine_signal_handler handlers[256];
extern void DECLSPEC_NORETURN __wine_call_from_32_restore_regs( CONTEXT context );
extern void DECLSPEC_NORETURN __wine_call_from_32_restore_regs( const CONTEXT *context );
/***********************************************************************
@ -703,6 +703,7 @@ inline static void *init_handler( const SIGCONTEXT *sigcontext, WORD *fs, WORD *
*/
inline static void save_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
context->ContextFlags |= CONTEXT86_FLOATING_POINT;
#ifdef FPU_sig
if (FPU_sig(sigcontext))
{
@ -793,6 +794,20 @@ inline static void restore_context( const CONTEXT *context, SIGCONTEXT *sigconte
}
/***********************************************************************
* set_cpu_context
*
* Set the new CPU context.
*/
inline static void DECLSPEC_NORETURN set_cpu_context( CONTEXT *context )
{
DWORD flags = context->ContextFlags & ~CONTEXT_i386;
if (flags & CONTEXT_FLOATING_POINT) restore_fpu( context );
__wine_call_from_32_restore_regs( context );
}
/***********************************************************************
* is_privileged_instr
*
@ -872,7 +887,6 @@ static EXCEPTION_RECORD *setup_exception( SIGCONTEXT *sigcontext, raise_func fun
void *ret_addr; /* return address from raise_func */
EXCEPTION_RECORD *rec_ptr; /* first arg for raise_func */
CONTEXT *context_ptr; /* second arg for raise_func */
void *dummy; /* dummy ret addr for __wine_call_from_32_restore_regs */
CONTEXT context;
EXCEPTION_RECORD rec;
DWORD ebp;
@ -912,7 +926,7 @@ static EXCEPTION_RECORD *setup_exception( SIGCONTEXT *sigcontext, raise_func fun
}
stack--; /* push the stack_layout structure */
stack->ret_addr = __wine_call_from_32_restore_regs;
stack->ret_addr = (void *)0xdeadbabe; /* raise_func must not return */
stack->rec_ptr = &stack->rec;
stack->context_ptr = &stack->context;
@ -977,16 +991,13 @@ static inline DWORD get_fpu_code( const CONTEXT *context )
/**********************************************************************
* raise_segv_exception
*/
static void WINAPI raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
static void WINAPI DECLSPEC_NORETURN raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
{
switch(rec->ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION:
if (rec->NumberParameters == 2)
{
if (!(rec->ExceptionCode = VIRTUAL_HandleFault( (void *)rec->ExceptionInformation[1] )))
return;
}
rec->ExceptionCode = VIRTUAL_HandleFault( (void *)rec->ExceptionInformation[1] );
break;
case EXCEPTION_DATATYPE_MISALIGNMENT:
/* FIXME: pass through exception handler first? */
@ -994,18 +1005,20 @@ static void WINAPI raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context
{
/* Disable AC flag, return */
context->EFlags &= ~0x00040000;
return;
goto done;
}
break;
}
__regs_RtlRaiseException( rec, context );
done:
set_cpu_context( context );
}
/**********************************************************************
* raise_trap_exception
*/
static void WINAPI raise_trap_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
static void WINAPI DECLSPEC_NORETURN raise_trap_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
{
DWORD dr0, dr1, dr2, dr3, dr6, dr7;
@ -1043,16 +1056,20 @@ static void WINAPI raise_trap_exception( EXCEPTION_RECORD *rec, CONTEXT *context
context->ContextFlags = CONTEXT_DEBUG_REGISTERS;
NtSetContextThread(GetCurrentThread(), context);
}
context->ContextFlags = CONTEXT_FULL; /* restore flags */
set_cpu_context( context );
}
/**********************************************************************
* raise_fpu_exception
* raise_exception
*
* Generic raise function for exceptions that don't need special treatment.
*/
static void WINAPI raise_fpu_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
static void WINAPI DECLSPEC_NORETURN raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
{
__regs_RtlRaiseException( rec, context );
restore_fpu( context );
set_cpu_context( context );
}
@ -1060,7 +1077,7 @@ static void WINAPI raise_fpu_exception( EXCEPTION_RECORD *rec, CONTEXT *context
/**********************************************************************
* raise_vm86_sti_exception
*/
static void WINAPI raise_vm86_sti_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
static void WINAPI DECLSPEC_NORETURN raise_vm86_sti_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
{
/* merge_vm86_pending_flags merges the vm86_pending flag in safely */
NtCurrentTeb()->vm86_pending |= VIP_MASK;
@ -1071,7 +1088,7 @@ static void WINAPI raise_vm86_sti_exception( EXCEPTION_RECORD *rec, CONTEXT *con
((char*)context->Eip <= (char*)vm86_return_end) &&
(VM86_TYPE(context->Eax) != VM86_SIGNAL)) {
/* exiting from VM86, can't throw */
return;
goto done;
}
merge_vm86_pending_flags( rec );
}
@ -1083,6 +1100,8 @@ static void WINAPI raise_vm86_sti_exception( EXCEPTION_RECORD *rec, CONTEXT *con
NtCurrentTeb()->vm86_pending = 0;
__regs_RtlRaiseException( rec, context );
}
done:
set_cpu_context( context );
}
@ -1200,7 +1219,7 @@ static HANDLER_DEF(trap_handler)
*/
static HANDLER_DEF(fpe_handler)
{
EXCEPTION_RECORD *rec = setup_exception( HANDLER_CONTEXT, raise_fpu_exception );
EXCEPTION_RECORD *rec = setup_exception( HANDLER_CONTEXT, raise_exception );
CONTEXT *context;
context = get_exception_context( rec );
@ -1239,7 +1258,7 @@ static HANDLER_DEF(int_handler)
init_handler( HANDLER_CONTEXT, &fs, &gs );
if (!dispatch_signal(SIGINT))
{
EXCEPTION_RECORD *rec = setup_exception( HANDLER_CONTEXT, __regs_RtlRaiseException );
EXCEPTION_RECORD *rec = setup_exception( HANDLER_CONTEXT, raise_exception );
rec->ExceptionCode = CONTROL_C_EXIT;
}
}
@ -1251,7 +1270,7 @@ static HANDLER_DEF(int_handler)
*/
static HANDLER_DEF(abrt_handler)
{
EXCEPTION_RECORD *rec = setup_exception( HANDLER_CONTEXT, __regs_RtlRaiseException );
EXCEPTION_RECORD *rec = setup_exception( HANDLER_CONTEXT, raise_exception );
rec->ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec->ExceptionFlags = EH_NONCONTINUABLE;
}

2
tools/winebuild/relay.c
View File

@ -850,7 +850,7 @@ static void BuildCallFrom32Regs( FILE *outfile )
output_function_size( outfile, "__wine_call_from_32_regs" );
function_header( outfile, "__wine_call_from_32_restore_regs" );
fprintf( outfile, "\tleal 4(%%esp),%%ecx\n" );
fprintf( outfile, "\tmovl 4(%%esp),%%ecx\n" );
fprintf( outfile, "\tjmp 2b\n" );
output_function_size( outfile, "__wine_call_from_32_restore_regs" );
}