sysdeps/i386/memset_chk.S


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

/* Checking memset for i386.
   Copyright (C) 2004-2015 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/>.  */

#ifndef SHARED
# include <sysdep.h>
# include "asm-syntax.h"

/* For libc.so this is defined in memset.S.  For libc.a, this is a
   separate source to avoid memset bringing in __chk_fail and all
   routines it calls.  */
        .text
ENTRY (__memset_chk)
	movl	12(%esp), %eax
	cmpl	%eax, 16(%esp)
	jb	__chk_fail
	jmp	memset
END (__memset_chk)
#endif