glibc/sysdeps/i386/i686/memmove_chk.S

35 lines
1.2 KiB
ArmAsm

/* Checking memmove for x86-64.
Copyright (C) 2004-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include "asm-syntax.h"
#ifndef PIC
/* For libc.so this is defined in memmove.S.
For libc.a, this is a separate source to avoid
memmove bringing in __chk_fail and all routines
it calls. */
.text
ENTRY (__memmove_chk)
movl 12(%esp), %eax
cmpl %eax, 16(%esp)
jb __chk_fail
jmp memmove
END (__memmove_chk)
#endif