diff options
Diffstat (limited to 'sysdeps/i386/i686/memcpy.S')
| -rw-r--r-- | sysdeps/i386/i686/memcpy.S | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/sysdeps/i386/i686/memcpy.S b/sysdeps/i386/i686/memcpy.S deleted file mode 100644 index 1d61447430..0000000000 --- a/sysdeps/i386/i686/memcpy.S +++ /dev/null @@ -1,98 +0,0 @@ -/* Copy memory block and return pointer to beginning of destination block - For Intel 80x86, x>=6. - This file is part of the GNU C Library. - Copyright (C) 1999-2017 Free Software Foundation, Inc. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999. - - 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" - -#define PARMS 4 /* no space for saved regs */ -#define RTN PARMS -#define DEST RTN -#define SRC DEST+4 -#define LEN SRC+4 - - .text -#if defined PIC && IS_IN (libc) -ENTRY_CHK (__memcpy_chk) - movl 12(%esp), %eax - cmpl %eax, 16(%esp) - jb HIDDEN_JUMPTARGET (__chk_fail) -END_CHK (__memcpy_chk) -#endif -ENTRY (memcpy) - - movl %edi, %eax - movl DEST(%esp), %edi - movl %esi, %edx - movl SRC(%esp), %esi - - movl %edi, %ecx - xorl %esi, %ecx - andl $3, %ecx - movl LEN(%esp), %ecx - cld - jne .Lunaligned - - cmpl $3, %ecx - jbe .Lunaligned - - testl $3, %esi - je 1f - movsb - decl %ecx - testl $3, %esi - je 1f - movsb - decl %ecx - testl $3, %esi - je 1f - movsb - decl %ecx -1: pushl %eax - movl %ecx, %eax - shrl $2, %ecx - andl $3, %eax - rep - movsl - movl %eax, %ecx - rep - movsb - popl %eax - -.Lend: movl %eax, %edi - movl %edx, %esi - movl DEST(%esp), %eax - - ret - - /* When we come here the pointers do not have the same - alignment or the length is too short. No need to optimize for - aligned memory accesses. */ -.Lunaligned: - shrl $1, %ecx - jnc 1f - movsb -1: shrl $1, %ecx - jnc 2f - movsw -2: rep - movsl - jmp .Lend -END (memcpy) -libc_hidden_builtin_def (memcpy) |