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-rw-r--r--sysdeps/l4/hurd/i386/pt-setup.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sysdeps/l4/hurd/i386/pt-setup.c b/sysdeps/l4/hurd/i386/pt-setup.c
index fe77d533..6afcd141 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. */
}