Blame sysdeps/x86_64/memcpy_chk.S

Packit Service 82fcde
/* Checking memcpy for x86-64.
Packit Service 82fcde
   Copyright (C) 2004-2018 Free Software Foundation, Inc.
Packit Service 82fcde
   This file is part of the GNU C Library.
Packit Service 82fcde
Packit Service 82fcde
   The GNU C Library is free software; you can redistribute it and/or
Packit Service 82fcde
   modify it under the terms of the GNU Lesser General Public
Packit Service 82fcde
   License as published by the Free Software Foundation; either
Packit Service 82fcde
   version 2.1 of the License, or (at your option) any later version.
Packit Service 82fcde
Packit Service 82fcde
   The GNU C Library is distributed in the hope that it will be useful,
Packit Service 82fcde
   but WITHOUT ANY WARRANTY; without even the implied warranty of
Packit Service 82fcde
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Packit Service 82fcde
   Lesser General Public License for more details.
Packit Service 82fcde
Packit Service 82fcde
   You should have received a copy of the GNU Lesser General Public
Packit Service 82fcde
   License along with the GNU C Library; if not, see
Packit Service 82fcde
   <http://www.gnu.org/licenses/>.  */
Packit Service 82fcde
Packit Service 82fcde
#include <sysdep.h>
Packit Service 82fcde
#include "asm-syntax.h"
Packit Service 82fcde
Packit Service 82fcde
#ifndef SHARED
Packit Service 82fcde
	/* For libc.so this is defined in memcpy.S.
Packit Service 82fcde
	   For libc.a, this is a separate source to avoid
Packit Service 82fcde
	   memcpy bringing in __chk_fail and all routines
Packit Service 82fcde
	   it calls.  */
Packit Service 82fcde
        .text
Packit Service 82fcde
ENTRY (__memcpy_chk)
Packit Service 82fcde
	cmpq	%rdx, %rcx
Packit Service 82fcde
	jb	__chk_fail
Packit Service 82fcde
	jmp	memcpy
Packit Service 82fcde
END (__memcpy_chk)
Packit Service 82fcde
#endif