diff options
Diffstat (limited to 'sysdeps/i386/i686/memmove.S')
| -rw-r--r-- | sysdeps/i386/i686/memmove.S | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/sysdeps/i386/i686/memmove.S b/sysdeps/i386/i686/memmove.S deleted file mode 100644 index f60c3d501b..0000000000 --- a/sysdeps/i386/i686/memmove.S +++ /dev/null @@ -1,120 +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) 2003-2017 Free Software Foundation, Inc. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 2003. - - 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+4 /* one spilled register */ -#define RTN PARMS - - .text - -#ifdef USE_AS_BCOPY -# define SRC RTN -# define DEST SRC+4 -# define LEN DEST+4 -#else -# define DEST RTN -# define SRC DEST+4 -# define LEN SRC+4 - -# if defined PIC && IS_IN (libc) -ENTRY_CHK (__memmove_chk) - movl 12(%esp), %eax - cmpl %eax, 16(%esp) - jb HIDDEN_JUMPTARGET (__chk_fail) -END_CHK (__memmove_chk) -# endif -#endif - -ENTRY (memmove) - - pushl %edi - cfi_adjust_cfa_offset (4) - - movl LEN(%esp), %ecx - movl DEST(%esp), %edi - cfi_rel_offset (edi, 0) - movl %esi, %edx - movl SRC(%esp), %esi - cfi_register (esi, edx) - - movl %edi, %eax - subl %esi, %eax - cmpl %eax, %ecx - ja 3f - - cld - shrl $1, %ecx - jnc 1f - movsb -1: shrl $1, %ecx - jnc 2f - movsw -2: rep - movsl - movl %edx, %esi - cfi_restore (esi) -#ifndef USE_AS_BCOPY - movl DEST(%esp), %eax -#endif - - popl %edi - cfi_adjust_cfa_offset (-4) - cfi_restore (edi) - - ret - - cfi_adjust_cfa_offset (4) - cfi_rel_offset (edi, 0) - cfi_register (esi, edx) - - /* Backward copying. */ -3: std - leal -1(%edi, %ecx), %edi - leal -1(%esi, %ecx), %esi - shrl $1, %ecx - jnc 1f - movsb -1: subl $1, %edi - subl $1, %esi - shrl $1, %ecx - jnc 2f - movsw -2: subl $2, %edi - subl $2, %esi - rep - movsl - movl %edx, %esi - cfi_restore (esi) -#ifndef USE_AS_BCOPY - movl DEST(%esp), %eax -#endif - - cld - popl %edi - cfi_adjust_cfa_offset (-4) - cfi_restore (edi) - - ret -END (memmove) -#ifndef USE_AS_BCOPY -libc_hidden_builtin_def (memmove) -#endif |