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| author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
|---|---|---|
| committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
| commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
| tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/i386/i686/memmove.S | |
| parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
| download | glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.xz glibc-zack/build-layout-experiment.zip | |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
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 |