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Exception handling for SIGFPE must always clear the FPU interrupt 

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Dave Hawkes 2000-06-23 16:49:09 +00:00 committed by Alexandre Julliard
parent 4f356e86e4
commit 52b6bd95d3
1 changed files with 2 additions and 1 deletions
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3
dlls/ntdll/signal_i386.c
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@ -443,6 +443,8 @@ static void inline save_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
*/ */
static void inline restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext ) static void inline restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
{ {
/* reset the current interrupt status */
context->FloatSave.StatusWord &= context->FloatSave.ControlWord | 0xffffff80;
#ifdef FPU_sig #ifdef FPU_sig
if (FPU_sig(sigcontext)) if (FPU_sig(sigcontext))
{ {
@ -452,7 +454,6 @@ static void inline restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
#endif /* FPU_sig */ #endif /* FPU_sig */
#ifdef __GNUC__ #ifdef __GNUC__
/* avoid nested exceptions */ /* avoid nested exceptions */
context->FloatSave.StatusWord &= context->FloatSave.ControlWord | 0xffffff80;
__asm__ __volatile__( "frstor %0; fwait" : : "m" (context->FloatSave) ); __asm__ __volatile__( "frstor %0; fwait" : : "m" (context->FloatSave) );
#endif /* __GNUC__ */ #endif /* __GNUC__ */
} }