Update.

	* sysdeps/i386/i686/memset.S: New file.
	* sysdeps/i386/i686/bzero.S: New file.

1999-01-05  Scott Bambrough  <scottb@corelcomputer.com>

diff --git a/ChangeLog b/ChangeLog
index 110585b..a108f34 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 1999-01-07  Ulrich Drepper  <drepper@cygnus.com>
 
+       * sysdeps/i386/i686/memset.S: New file.
+       * sysdeps/i386/i686/bzero.S: New file.
+
        * sysdeps/unix/sysv/linux/Makefile [subdir=time] (sysdep_routines):
        Add ntp_adjtime and ntp_gettime.
        * sysdeps/unix/sysv/linux/Versions [GLIBC_2.1]: Add ntp_adjtime and
@@ -65,7 +68,7 @@
        * sysdeps/unix/sysv/linux/net/if_arp.h: Add new ARPHRD definitions
        from latest (2.2.0pre4) kernel.
 
-1999-01-05 Scott Bambrough  <scottb@corelcomputer.com>
+1999-01-05  Scott Bambrough  <scottb@corelcomputer.com>
 
        * sysdeps/unix/sysv/linux/arm/sys/user.h : New file.  Fixes problem
        on ARM platforms with programs that include <sys/user.h> and

diff --git a/sysdeps/i386/i686/bzero.S b/sysdeps/i386/i686/bzero.S
new file mode 100644 (file)
index 0000000..34b0faa
--- /dev/null
+++ b/sysdeps/i386/i686/bzero.S
@@ -0,0 +1,3 @@
+#define memset __bzero
+#include <sysdeps/i386/i686/memset.S>
+weak_alias (__bzero, bzero)

diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S
new file mode 100644 (file)
index 0000000..1f753b0
--- /dev/null
+++ b/sysdeps/i386/i686/memset.S
@@ -0,0 +1,75 @@
+/* memset/bzero -- set memory area to CH/0
+   Highly optimized version for ix86, x>=6.
+   Copyright (C) 1999 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 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+#include "asm-syntax.h"
+
+/*
+   INPUT PARAMETERS:
+   (memset)                    (bzero)
+   dst          (sp + 4)       dst     (sp + 4)
+   ch           (sp + 8)       len     (sp + 8)
+   len         (sp + 12)
+*/
+
+
+        .text
+ENTRY (memset)
+       cld
+       pushl   %edi
+       movl    8(%esp), %edx
+#ifdef memset
+       movl    12(%esp), %ecx
+       xorl    %eax, %eax
+#else
+       movzbl  12(%esp), %eax
+       movl    16(%esp), %ecx
+#endif
+       jecxz   1f
+       movl    %edx, %edi
+       andl    $3, %edx
+       jz      2f
+       jnp     3f
+       stosb
+       decl    %ecx
+       jz      1f
+3:     stosb
+       decl    %ecx
+       jz      1f
+       xorl    $3, %edx
+       jz      2f
+       stosb
+       decl    %ecx
+2:     movl    %ecx, %edx
+       shrl    $2, %ecx
+       andl    $3, %edx
+#ifndef memset
+       imul    $0x01010101, %eax
+#endif
+       rep
+       stosl
+       movl    %edx, %ecx
+       rep
+       stosb
+
+1:     movl    8(%esp), %eax
+       popl    %edi
+       ret
+END (memset)