diff options
Diffstat (limited to 'sysdeps/i386/i686/memset.S')
| -rw-r--r-- | sysdeps/i386/i686/memset.S | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S deleted file mode 100644 index 24d06178d2..0000000000 --- a/sysdeps/i386/i686/memset.S +++ /dev/null @@ -1,100 +0,0 @@ -/* memset/bzero -- set memory area to CH/0 - Highly optimized version for ix86, x>=6. - Copyright (C) 1999-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - 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+4 /* space for 1 saved reg */ -#ifdef USE_AS_BZERO -# define DEST PARMS -# define LEN DEST+4 -#else -# define RTN PARMS -# define DEST RTN -# define CHR DEST+4 -# define LEN CHR+4 -#endif - - .text -#if defined SHARED && IS_IN (libc) && !defined USE_AS_BZERO -ENTRY_CHK (__memset_chk) - movl 12(%esp), %eax - cmpl %eax, 16(%esp) - jb HIDDEN_JUMPTARGET (__chk_fail) -END_CHK (__memset_chk) -#endif -ENTRY (memset) - - cld - pushl %edi - cfi_adjust_cfa_offset (4) - movl DEST(%esp), %edx - movl LEN(%esp), %ecx -#ifdef USE_AS_BZERO - xorl %eax, %eax /* fill with 0 */ -#else - movzbl CHR(%esp), %eax -#endif - jecxz 1f - movl %edx, %edi - cfi_rel_offset (edi, 0) - andl $3, %edx - jz 2f /* aligned */ - jp 3f /* misaligned at 3, store just one byte below */ - stosb /* misaligned at 1 or 2, store two bytes */ - decl %ecx - jz 1f -3: stosb - decl %ecx - jz 1f - xorl $1, %edx - jnz 2f /* was misaligned at 2 or 3, now aligned */ - stosb /* was misaligned at 1, store third byte */ - decl %ecx -2: movl %ecx, %edx - shrl $2, %ecx - andl $3, %edx -#ifndef USE_AS_BZERO - imul $0x01010101, %eax -#endif - rep - stosl - movl %edx, %ecx - rep - stosb - -1: -#ifndef USE_AS_BZERO - movl DEST(%esp), %eax /* start address of destination is result */ -#endif - popl %edi - cfi_adjust_cfa_offset (-4) - cfi_restore (edi) - - ret -END (memset) -libc_hidden_builtin_def (memset) - -#if defined SHARED && IS_IN (libc) && !defined __memset_chk \ - && !defined USE_AS_BZERO -strong_alias (__memset_chk, __memset_zero_constant_len_parameter) - .section .gnu.warning.__memset_zero_constant_len_parameter - .string "memset used with constant zero length parameter; this could be due to transposed parameters" -#endif |