diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2015-08-27 09:04:40 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-08-27 09:04:54 -0700 |
| commit | d226114b9bfce2ea729f9c7b736aa5d509b2a73c (patch) | |
| tree | 4076d4d6c1c6c3e112d417f85b036d10ceb79480 /sysdeps/i386/memset_chk.S | |
| parent | 37430363b865f2423bd58b4f0eaa779845ed7e71 (diff) | |
| download | glibc-d226114b9bfce2ea729f9c7b736aa5d509b2a73c.tar.gz | |
Add i386 memset and memcpy assembly functions
Add i386 memset and memcpy assembly functions with REP MOVSB/STOSB
instructions.
* sysdeps/i386/bcopy.S: New file.
* sysdeps/i386/bzero.S: Likewise.
* sysdeps/i386/memcpy.S: Likewise.
* sysdeps/i386/memmove.S: Likewise.
* sysdeps/i386/mempcpy.S: Likewise.
* sysdeps/i386/memset.S: Likewise.
* sysdeps/i386/bzero.c: Removed.
* sysdeps/i386/memset.c: Likewise.
* sysdeps/i386/i586/memcpy_chk.S: Likewise.
* sysdeps/i386/i586/mempcpy_chk.S: Likewise.
* sysdeps/i386/i586/memset_chk.S: Likewise.
* sysdeps/i386/i686/memcpy_chk.S: Moved to ...
* sysdeps/i386/memcpy_chk.S: Here.
* sysdeps/i386/i686/memmove_chk.S: Moved to ...
* sysdeps/i386/memmove_chk.S: Here.
* sysdeps/i386/i686/mempcpy_chk.S: Moved to ...
* sysdeps/i386/mempcpy_chk.S: Likewise.
* sysdeps/i386/i686/memset_chk.S: Moved to ...
* sysdeps/i386/memset_chk.S: Likewise.
Diffstat (limited to 'sysdeps/i386/memset_chk.S')
| -rw-r--r-- | sysdeps/i386/memset_chk.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sysdeps/i386/memset_chk.S b/sysdeps/i386/memset_chk.S new file mode 100644 index 0000000000..2312d32871 --- /dev/null +++ b/sysdeps/i386/memset_chk.S @@ -0,0 +1,33 @@ +/* Checking memset for i386. + Copyright (C) 2004-2015 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/>. */ + +#ifndef SHARED +# include <sysdep.h> +# include "asm-syntax.h" + +/* For libc.so this is defined in memset.S. For libc.a, this is a + separate source to avoid memset bringing in __chk_fail and all + routines it calls. */ + .text +ENTRY (__memset_chk) + movl 12(%esp), %eax + cmpl %eax, 16(%esp) + jb __chk_fail + jmp memset +END (__memset_chk) +#endif |