aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/i386/memchr.c
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
committerRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
commit8f5ca04bc7fd53741d80117df992995ace8f6d2d (patch)
treee39c13fc198b22ec55647259a8080051988e8c69 /sysdeps/i386/memchr.c
parent5d82cf5c55f56ae10d3b0a205d1fcc7de1cf56a0 (diff)
downloadglibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.tar
glibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.tar.gz
glibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.tar.bz2
glibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.zip
Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* malloc/malloc.c (_malloc_internal): Performance fix. Move if statement out of loop. * stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster implementation using GMP functions. Contributed by Torbjorn Granlund and Ulrich Drepper. * stdio/test_rdwr.c: Include <errno.h>. * sysdeps/i386/i586/Implies: New file. New highly optimized string functions for i[345]86. * sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files. * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files. * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files. * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files. * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files. * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files. * sysdeps/i386/i586/strlen.S: New file. * sysdeps/i386/memchr.c: Removed. There is now an assembler version. * sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did not correspond to used values. * sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper around a kernel header file. * sysdeps/unix/sysv/linux/Dist: Add it. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers): Likewise. * sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of defining ourself we use a kernel header file. * sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system call handler for i586. * sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up. Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de> * malloc/malloc.c (_malloc_internal): Performance fix. Move if statement out of loop. * stdio/_itoa.c, stdio/_itoa.h: Complete rewrite. Much faster implementation using GMP functions. Contributed by Torbjorn Granlund and Ulrich Drepper. * stdio/test_rdwr.c: Include <errno.h>. * sysdeps/i386/i586/Implies: New file. New highly optimized string functions for i[345]86. * sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files. * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files. * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files. * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files. * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files. * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files. * sysdeps/i386/i586/strlen.S: New file. * sysdeps/i386/memchr.c: Removed. There is now an assembler version. * sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did not correspond to used values. * sysdeps/unix/sysv/linux/nfs/nfs.h: New file. Simply a wrapper around a kernel header file. * sysdeps/unix/sysv/linux/Dist: Add it. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers): Likewise. * sysdeps/unix/sysv/linux/local_lim.h: Rewrite. Instead of defining ourself we use a kernel header file. * sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system call handler for i586. * sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Diffstat (limited to 'sysdeps/i386/memchr.c')
-rw-r--r--sysdeps/i386/memchr.c48
1 files changed, 0 insertions, 48 deletions
diff --git a/sysdeps/i386/memchr.c b/sysdeps/i386/memchr.c
deleted file mode 100644
index ff0f8d9044..0000000000
--- a/sysdeps/i386/memchr.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/* memchr (str, ch, n) -- Return pointer to first occurrence of CH in STR less
- than N.
- For Intel 80x86, x>=3.
- Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
- Contributed by Torbjorn Granlund (tege@sics.se).
-
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 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
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-#include <ansidecl.h>
-#include <string.h>
-
-#ifdef __GNUC__
-
-PTR
-DEFUN(memchr, (str, c, len),
- CONST PTR str AND int c AND size_t len)
-{
- PTR retval;
- asm("cld\n" /* Search forward. */
- "testl %1,%1\n" /* Clear Z flag, to handle LEN == 0. */
- /* Some old versions of gas need `repne' instead of `repnz'. */
- "repnz\n" /* Search for C in al. */
- "scasb\n"
- "movl %2,%0\n" /* Set %0 to 0 (without affecting Z flag). */
- "jnz done\n" /* Jump if we found nothing equal to C. */
- "leal -1(%1),%0\n" /* edi has been incremented. Return edi-1. */
- "done:" :
- "=a" (retval), "=D" (str), "=c" (len) :
- "0" (c), "1" (str), "2" (len));
- return retval;
-}
-
-#else
-#include <sysdeps/generic/memchr.c>
-#endif