diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/i386/i686/bzero.S | 3 | ||||
| -rw-r--r-- | sysdeps/i386/i686/memset.S | 75 |
3 files changed, 82 insertions, 1 deletions
@@ -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 index 0000000000..34b0faa91b --- /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 index 0000000000..1f753b0350 --- /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) |