From afd495357942d9cd5aaee27b1185cf9a4d4f81fe Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Fri, 29 Feb 2008 09:53:35 +0000
Subject: 2008-02-29  Samuel Thibault  <samuel.thibault@ens-lyon.org

	* sysdeps/l4/hurd/i386/pt-setup.c (stack_setup): Align stack on 0x10
	for MMX operations.
	* sysdeps/mach/hurd/i386/pt-setup.c (stack_setup): Likewise.
---
 sysdeps/l4/hurd/i386/pt-setup.c   | 6 ++++--
 sysdeps/mach/hurd/i386/pt-setup.c | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

(limited to 'sysdeps')

diff --git a/sysdeps/l4/hurd/i386/pt-setup.c b/sysdeps/l4/hurd/i386/pt-setup.c
index fe77d53..6afcd14 100644
--- a/sysdeps/l4/hurd/i386/pt-setup.c
+++ b/sysdeps/l4/hurd/i386/pt-setup.c
@@ -47,8 +47,10 @@ stack_setup (struct __pthread *thread,
   if (start_routine)
     {
       /* Set up call frame.  */
-      *--top = (L4_Word_t) arg;	/* Argument to START_ROUTINE.  */
-      *--top = (L4_Word_t) start_routine;
+      top -= 2*sizeof(L4_Word_t);
+      top = (unsigned long) top & ~0xf;
+      top[1] = (L4_Word_t) arg;	/* Argument to START_ROUTINE.  */
+      top[0] = (L4_Word_t) start_routine;
       *--top = 0;		/* Fake return address.  */
     }
 
diff --git a/sysdeps/mach/hurd/i386/pt-setup.c b/sysdeps/mach/hurd/i386/pt-setup.c
index 32ace6a..71f60e2 100644
--- a/sysdeps/mach/hurd/i386/pt-setup.c
+++ b/sysdeps/mach/hurd/i386/pt-setup.c
@@ -63,8 +63,10 @@ stack_setup (struct __pthread *thread,
   if (start_routine)
     {
       /* And then the call frame.  */
-      *--top = (uintptr_t) arg;	/* Argument to START_ROUTINE.  */
-      *--top = (uintptr_t) start_routine;
+      top -= 2*sizeof(uintptr_t);
+      top = (uintptr_t) top & ~0xf;
+      top[1] = (uintptr_t) arg;	/* Argument to START_ROUTINE.  */
+      top[0] = (uintptr_t) start_routine;
       *--top = 0;		/* Fake return address.  */
     }
 
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