Update.

2003-07-22  H.J. Lu  <hongjiu.lu@intel.com>

	* elf/dl-support.c (_dl_hwcap): New variable.
	(_dl_aux_init): Initialize GL(dl_hwcap) for static binaries.

	* sysdeps/i386/fpu/fclrexcpt.c: Include <unistd.h>, <ldsodefs.h>
	and <dl-procinfo.h>.
	(__feclearexcept): Clear MXCSR if needed.
	* sysdeps/i386/fpu/fsetexcptflg.c: Likewise.

	* sysdeps/i386/fpu_control.h (_FPU_GETCW, _FPU_SETCW): Document
	that newer hardware needs more than these macros.

	* sysdeps/i386/setfpucw.c: New file.

2003-07-22  Jakub Jelinek  <jakub@redhat.com>

	* elf/Makefile (CFLAGS-ldconfig.c): Define IS_IN_ldconfig.
	* elf/ldconfig.c: Include dl-procinfo.c.
	(PROCINFO_CLASS): Define.
	* sysdeps/generic/ldsodefs.h (PROCINFO_CLASS): Define.
	* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: New file.
	* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h: New file.
	* sysdeps/unix/sysv/linux/i386/dl-procinfo.c (PROCINFO_CLASS):
	Define if not yet defined.  Use it instead of EXTERN.  Undefine
	at the end of the file.
	* sysdeps/unix/sysv/linux/arm/dl-procinfo.c (PROCINFO_CLASS):
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c
	(PROCINFO_CLASS): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c
	(PROCINFO_CLASS): Likewise.

2003-07-22  H.J. Lu  <hongjiu.lu@intel.com>

	* elf/ldconfig.c (main): Issue a fatal error if relative path
	is used to build cache.

2003-07-22  Ulrich Drepper  <drepper@redhat.com>

	* elf/readlib.c (process_file): Avoid possible overflow in assignment.

2 files changed, 37 insertions, 0 deletions

diff --git a/sysdeps/i386/fpu/fclrexcpt.c b/sysdeps/i386/fpu/fclrexcpt.c
index c3e7c3ed48..f7ccd3acf6 100644
--- a/sysdeps/i386/fpu/fclrexcpt.c
+++ b/sysdeps/i386/fpu/fclrexcpt.c
@@ -19,6 +19,9 @@
    02111-1307 USA.  */
 
 #include <fenv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
 
 int
 __feclearexcept (int excepts)
@@ -38,6 +41,21 @@ __feclearexcept (int excepts)
   /* Put the new data in effect.  */
   __asm__ ("fldenv %0" : : "m" (*&temp));
 
+  /* If the CPU supports SSE, we clear 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));
+      
+      /* Clear the relevant bits.  */
+      xnew_exc &= excepts ^ FE_ALL_EXCEPT;
+      
+      /* Put the new data in effect.  */
+      __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+    }
+
   /* Success.  */
   return 0;
 }
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;
 }