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-rw-r--r--sysdeps/unix/sysv/linux/i386/clone.S47
1 files changed, 20 insertions, 27 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/clone.S b/sysdeps/unix/sysv/linux/i386/clone.S
index 7e02f76dfe..541ae10f6a 100644
--- a/sysdeps/unix/sysv/linux/i386/clone.S
+++ b/sysdeps/unix/sysv/linux/i386/clone.S
@@ -1,20 +1,21 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@tamu.edu)
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/* clone() is even more special than fork() as it mucks with stacks
and invokes a function in the right context after its all over. */
@@ -23,7 +24,7 @@ Cambridge, MA 02139, USA. */
#define _ERRNO_H 1
#include <errnos.h>
-/* int clone(int (*fn)(), void *child_stack, int flags, int nargs, ...) */
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
.text
ENTRY(__clone)
@@ -35,20 +36,12 @@ ENTRY(__clone)
movl 8(%esp),%ecx /* no NULL stack pointers */
testl %ecx,%ecx
jz syscall_error
- movl 16(%esp),%edx /* no negative argument counts */
- testl %edx,%edx
- js syscall_error
- /* Allocate space on the new stack and copy args over */
- movl %edx,%eax
- negl %eax
- lea -4(%ecx,%eax,4),%ecx
- jz 2f
-1: movl 16(%esp,%edx,4),%eax
- movl %eax,0(%ecx,%edx,4)
- dec %edx
- jnz 1b
-2:
+ /* Insert the argument onto the new stack. */
+ subl $-8,%ecx
+ movl 16(%esp),%eax /* no negative argument counts */
+ movl %eax,4(%ecx)
+
/* Save the function pointer as the zeroth argument.
It will be popped off in the child in the ebx frobbing below. */
movl 4(%esp),%eax