diff options
Diffstat (limited to 'sysdeps/i386/memcpy.S')
-rw-r--r-- | sysdeps/i386/memcpy.S | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/sysdeps/i386/memcpy.S b/sysdeps/i386/memcpy.S deleted file mode 100644 index 06568ea724..0000000000 --- a/sysdeps/i386/memcpy.S +++ /dev/null @@ -1,95 +0,0 @@ -/* memcpy with REP MOVSB/STOSB - Copyright (C) 2015-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - 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" - -#ifndef MEMCPY -# define MEMCPY memcpy -# define MEMCPY_CHK __memcpy_chk -#endif - -#ifdef USE_AS_BCOPY -# define STR2 12 -# define STR1 STR2+4 -# define N STR1+4 -#else -# define STR1 12 -# define STR2 STR1+4 -# define N STR2+4 -#endif - -#define CFI_PUSH(REG) \ - cfi_adjust_cfa_offset (4); \ - cfi_rel_offset (REG, 0) - -#define CFI_POP(REG) \ - cfi_adjust_cfa_offset (-4); \ - cfi_restore (REG) - -#define PUSH(REG) pushl REG; CFI_PUSH (REG) -#define POP(REG) popl REG; CFI_POP (REG) - - .text -#if defined SHARED && IS_IN (libc) && !defined USE_AS_BCOPY -ENTRY (MEMCPY_CHK) - movl 12(%esp), %eax - cmpl %eax, 16(%esp) - jb HIDDEN_JUMPTARGET (__chk_fail) -END (MEMCPY_CHK) -#endif -ENTRY (MEMCPY) - PUSH (%esi) - PUSH (%edi) - movl N(%esp), %ecx - movl STR1(%esp), %edi - movl STR2(%esp), %esi - mov %edi, %eax -#ifdef USE_AS_MEMPCPY - add %ecx, %eax -#endif - -#ifdef USE_AS_MEMMOVE - cmp %esi, %edi - ja L(copy_backward) - je L(bwd_write_0bytes) -#endif - - rep movsb - POP (%edi) - POP (%esi) - ret - -#ifdef USE_AS_MEMMOVE -L(copy_backward): - lea -1(%edi,%ecx), %edi - lea -1(%esi,%ecx), %esi - std - rep movsb - cld -L(bwd_write_0bytes): - POP (%edi) - POP (%esi) - ret -#endif - -END (MEMCPY) - -#ifndef USE_AS_BCOPY -libc_hidden_builtin_def (MEMCPY) -#endif |