1 files changed, 19 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/fsetexcptflg.c b/sysdeps/i386/fpu/fsetexcptflg.c
index 2bfc736054..d262738b68 100644
--- a/sysdeps/i386/fpu/fsetexcptflg.c
+++ b/sysdeps/i386/fpu/fsetexcptflg.c
@@ -21,6 +21,9 @@
 #include <fenv.h>
 #include <math.h>
 #include <bp-sym.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
 
 int
 __fesetexceptflag (const fexcept_t *flagp, int excepts)
@@ -39,6 +42,22 @@ __fesetexceptflag (const fexcept_t *flagp, int excepts)
      the next floating-point instruction.  */
   __asm__ ("fldenv %0" : : "m" (*&temp));
 
+  /* If the CPU supports SSE, we set the MXCSR as well.  */
+  if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0)
+    {
+      unsigned int xnew_exc;
+
+      /* Get the current MXCSR.  */
+      __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
+
+      /* Set the relevant bits.  */
+      xnew_exc &= ~(excepts & FE_ALL_EXCEPT);
+      xnew_exc |= *flagp & excepts & FE_ALL_EXCEPT;
+
+      /* Put the new data in effect.  */
+      __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+    }
+  
   /* Success.  */
   return 0;
 }