ntdll: Pass the error code to VIRTUAL_HandleFault, and allow it to ignore the exception.

dlls/ntdll/ntdll_misc.h

@@ -141,7 +141,7 @@ extern SIZE_T virtual_free_system_view( PVOID *addr_ptr );
 extern NTSTATUS virtual_alloc_thread_stack( void *base, SIZE_T stack_size );
 extern void virtual_clear_thread_stack(void);
 extern BOOL virtual_handle_stack_fault( void *addr );
-extern NTSTATUS VIRTUAL_HandleFault(LPCVOID addr);
+extern NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err );
 extern void VIRTUAL_SetForceExec( BOOL enable );
 extern void VIRTUAL_UseLargeAddressSpace(void);
 extern struct _KUSER_SHARED_DATA *user_shared_data;

dlls/ntdll/signal_i386.c

@@ -1209,7 +1209,9 @@ static void WINAPI raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context
         {
             if (rec->ExceptionInformation[0] == EXCEPTION_EXECUTE_FAULT && check_atl_thunk( rec, context ))
                 goto done;
-            rec->ExceptionCode = VIRTUAL_HandleFault( (void *)rec->ExceptionInformation[1] );
+            if (!(rec->ExceptionCode = virtual_handle_fault( (void *)rec->ExceptionInformation[1],
+                                                             rec->ExceptionInformation[0] )))
+                goto done;
         }
         break;
     case EXCEPTION_DATATYPE_MISALIGNMENT:

dlls/ntdll/signal_powerpc.c

@@ -321,7 +321,6 @@ static inline DWORD get_fpu_code( const CONTEXT *context )
 static void do_segv( CONTEXT *context, int trap, int err, int code, void * addr )
 {
     EXCEPTION_RECORD rec;
-    DWORD page_fault_code = EXCEPTION_ACCESS_VIOLATION;
 
     rec.ExceptionRecord  = NULL;
     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
@@ -336,9 +335,8 @@ static void do_segv( CONTEXT *context, int trap, int err, int code, void * addr
 		rec.NumberParameters = 2;
 		rec.ExceptionInformation[0] = 0; /* FIXME ? */
 		rec.ExceptionInformation[1] = (ULONG_PTR)addr;
-		if (!(page_fault_code=VIRTUAL_HandleFault(addr)))
+		if (!(rec.ExceptionCode = virtual_handle_fault(addr, rec.ExceptionInformation[0])))
 			return;
-		rec.ExceptionCode = page_fault_code;
 		break;
 	default:FIXME("Unhandled SIGSEGV/%x\n",code);
 		break;
@@ -358,9 +356,8 @@ static void do_segv( CONTEXT *context, int trap, int err, int code, void * addr
 		rec.NumberParameters = 2;
 		rec.ExceptionInformation[0] = 0; /* FIXME ? */
 		rec.ExceptionInformation[1] = (ULONG_PTR)addr;
-		if (!(page_fault_code=VIRTUAL_HandleFault(addr)))
+		if (!(rec.ExceptionCode = virtual_handle_fault(addr, rec.ExceptionInformation[0])))
 			return;
-		rec.ExceptionCode = page_fault_code;
 		break;
 #endif
 	default:FIXME("Unhandled SIGBUS/%x\n",code);

dlls/ntdll/signal_sparc.c

@@ -180,12 +180,13 @@ static void segv_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
     EXCEPTION_RECORD rec;
     CONTEXT context;
 
+    rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
+
     /* we want the page-fault case to be fast */
     if ( info->si_code == SEGV_ACCERR )
-        if (VIRTUAL_HandleFault( (LPVOID)info->si_addr )) return;
+        if (!(rec.ExceptionCode = virtual_handle_fault( info->si_addr, 0 ))) return;
 
     save_context( &context, ucontext );
-    rec.ExceptionCode    = EXCEPTION_ACCESS_VIOLATION;
     rec.ExceptionRecord  = NULL;
     rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
     rec.ExceptionAddress = (LPVOID)context.pc;

dlls/ntdll/signal_x86_64.c

@@ -263,6 +263,8 @@ static HANDLER_DEF(segv_handler)
         rec.NumberParameters = 2;
         rec.ExceptionInformation[0] = (ERROR_sig(HANDLER_CONTEXT) & 2) != 0;
         rec.ExceptionInformation[1] = (ULONG_PTR)FAULT_ADDRESS;
+        if (!(rec.ExceptionCode = virtual_handle_fault( FAULT_ADDRESS, rec.ExceptionInformation[0] )))
+            goto done;
 #endif
         break;
     case TRAP_x86_ALIGNFLT:  /* Alignment check exception */
@@ -282,6 +284,7 @@ static HANDLER_DEF(segv_handler)
     }
 
     __regs_RtlRaiseException( &rec, &context );
+done:
     restore_context( &context, HANDLER_CONTEXT );
 }
 

dlls/ntdll/virtual.c

@@ -1399,9 +1399,9 @@ void virtual_clear_thread_stack(void)
 
 
 /***********************************************************************
- *           VIRTUAL_HandleFault
+ *           virtual_handle_fault
  */
-NTSTATUS VIRTUAL_HandleFault( LPCVOID addr )
+NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
 {
     FILE_VIEW *view;
     NTSTATUS ret = STATUS_ACCESS_VIOLATION;