ntdll: Don't throw masked FPU exceptions.

When an FPU exception is masked the appropriate flag in the status word will still be set, so get_fpu_code() should mask the exception flags in the status word with the exception flags in the control word.

ntdll: Don't throw masked FPU exceptions.
03468a4f · Henri Verbeet · Alexandre Julliard · 5e418a90 · 03468a4f
Commit 03468a4f authored Jan 04, 2009 by Henri Verbeet Committed by Alexandre Julliard Jan 05, 2009
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signal_i386.c dlls/ntdll/signal_i386.c +1 -1

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--- a/dlls/ntdll/signal_i386.c
+++ b/dlls/ntdll/signal_i386.c
@@ -1179,7 +1179,7 @@ static inline CONTEXT *get_exception_context( EXCEPTION_RECORD *rec )
 */
 static inline DWORD get_fpu_code( const CONTEXT *context )
 {
-    DWORD status = context->FloatSave.StatusWord;
+    DWORD status = context->FloatSave.StatusWord & ~(context->FloatSave.ControlWord & 0x3f);

    if (status & 0x01)  /* IE */
    {