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Diffstat (limited to 'sysdeps/i386/i586/strcpy.S')
| -rw-r--r-- | sysdeps/i386/i586/strcpy.S | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/sysdeps/i386/i586/strcpy.S b/sysdeps/i386/i586/strcpy.S deleted file mode 100644 index a444604f4f..0000000000 --- a/sysdeps/i386/i586/strcpy.S +++ /dev/null @@ -1,169 +0,0 @@ -/* strcpy/stpcpy implementation for i586. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. - - 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+12 /* space for 3 saved regs */ -#define RTN PARMS -#define DEST RTN -#define SRC DEST+4 - -#ifndef USE_AS_STPCPY -# define STRCPY strcpy -#endif - -#define magic 0xfefefeff - - .text -ENTRY (STRCPY) - - pushl %edi - cfi_adjust_cfa_offset (4) - pushl %esi - cfi_adjust_cfa_offset (4) - pushl %ebx - cfi_adjust_cfa_offset (4) - - movl DEST(%esp), %edi - cfi_rel_offset (edi, 8) - movl SRC(%esp), %esi - cfi_rel_offset (esi, 4) - - xorl %eax, %eax - leal -1(%esi), %ecx - - movl $magic, %ebx - cfi_rel_offset (ebx, 0) - andl $3, %ecx - -#ifdef PIC - call 2f - cfi_adjust_cfa_offset (4) -2: popl %edx - cfi_adjust_cfa_offset (-4) - /* 0xb is the distance between 2: and 1: but we avoid writing - 1f-2b because the assembler generates worse code. */ - leal 0xb(%edx,%ecx,8), %ecx -#else - leal 1f(,%ecx,8), %ecx -#endif - - jmp *%ecx - - .align 8 -1: - orb (%esi), %al - jz L(end) - stosb - xorl %eax, %eax - incl %esi - - orb (%esi), %al - jz L(end) - stosb - xorl %eax, %eax - incl %esi - - orb (%esi), %al - jz L(end) - stosb - xorl %eax, %eax - incl %esi - -L(1): movl (%esi), %ecx - leal 4(%esi),%esi - - subl %ecx, %eax - addl %ebx, %ecx - - decl %eax - jnc L(3) - - movl %ecx, %edx - xorl %ecx, %eax - - subl %ebx, %edx - andl $~magic, %eax - - jne L(4) - - movl %edx, (%edi) - leal 4(%edi),%edi - - jmp L(1) - -L(3): movl %ecx, %edx - - subl %ebx, %edx - -L(4): movb %dl, (%edi) - testb %dl, %dl - - movl %edx, %eax - jz L(end2) - - shrl $16, %eax - movb %dh, 1(%edi) -#ifdef USE_AS_STPCPY - addl $1, %edi -#endif - - cmpb $0, %dh - jz L(end2) - -#ifdef USE_AS_STPCPY - movb %al, 1(%edi) - addl $1, %edi - - cmpb $0, %al - jz L(end2) - - addl $1, %edi -#else - movb %al, 2(%edi) - testb %al, %al - - leal 3(%edi), %edi - jz L(end2) -#endif - -L(end): movb %ah, (%edi) - -L(end2): -#ifdef USE_AS_STPCPY - movl %edi, %eax -#else - movl DEST(%esp), %eax -#endif - popl %ebx - cfi_adjust_cfa_offset (-4) - cfi_restore (ebx) - popl %esi - cfi_adjust_cfa_offset (-4) - cfi_restore (esi) - popl %edi - cfi_adjust_cfa_offset (-4) - cfi_restore (edi) - - ret -END (STRCPY) -#ifndef USE_AS_STPCPY -libc_hidden_builtin_def (strcpy) -#endif |