diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/i386/i686/memcpy.S | 51 | ||||
| -rw-r--r-- | sysdeps/i386/i686/mempcpy.S | 8 | ||||
| -rw-r--r-- | sysdeps/i386/i686/memset.S | 6 | ||||
| -rw-r--r-- | sysdeps/i386/i686/strcmp.S | 48 |
4 files changed, 108 insertions, 5 deletions
diff --git a/sysdeps/i386/i686/memcpy.S b/sysdeps/i386/i686/memcpy.S new file mode 100644 index 0000000000..eab6855d57 --- /dev/null +++ b/sysdeps/i386/i686/memcpy.S @@ -0,0 +1,51 @@ +/* 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) 1999 Free Software Foundation, Inc. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999. + + 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" + +/* memcpy: + INPUT PARAMETER: + dest (sp + 4) + src (sp + 8) + len (sp + 12) +*/ + +ENTRY(memcpy) + movl 12(%esp), %ecx + movl %edi, %eax + movl 4(%esp), %edi + movl %esi, %edx + movl 8(%esp), %esi + cld + shrl $1, %ecx + jnc 1f + movsb +1: shrl $1, %ecx + jnc 2f + movsw +2: rep + movsl + movl %eax, %edi + movl %edx, %esi + movl 4(%esp), %eax + ret +END(memcpy) diff --git a/sysdeps/i386/i686/mempcpy.S b/sysdeps/i386/i686/mempcpy.S index 5760d9f940..4fb14a3d14 100644 --- a/sysdeps/i386/i686/mempcpy.S +++ b/sysdeps/i386/i686/mempcpy.S @@ -1,7 +1,7 @@ /* Copy memory block and return pointer to following byte. For Intel 80x86, x>=6. This file is part of the GNU C Library. - Copyright (C) 1998 Free Software Foundation, Inc. + Copyright (C) 1998, 1999 Free Software Foundation, Inc. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. The GNU C Library is free software; you can redistribute it and/or @@ -22,7 +22,7 @@ #include <sysdep.h> #include "asm-syntax.h" -/* strtok: +/* mempcpy: INPUT PARAMETER: dest (sp + 4) src (sp + 8) @@ -30,11 +30,11 @@ */ ENTRY(__mempcpy) + movl 12(%esp), %ecx movl %edi, %eax movl 4(%esp), %edi movl %esi, %edx movl 8(%esp), %esi - movl 12(%esp), %ecx cld shrl $1, %ecx jnc 1f @@ -47,5 +47,5 @@ ENTRY(__mempcpy) xchgl %edi, %eax movl %edx, %esi ret -END(mempcpy) +END(__mempcpy) weak_alias (__mempcpy, mempcpy) diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S index 1f753b0350..83f8c50484 100644 --- a/sysdeps/i386/i686/memset.S +++ b/sysdeps/i386/i686/memset.S @@ -2,6 +2,7 @@ Highly optimized version for ix86, x>=6. Copyright (C) 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999. 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 @@ -69,7 +70,10 @@ ENTRY (memset) rep stosb -1: movl 8(%esp), %eax +1: +#ifndef memset + movl 8(%esp), %eax +#endif popl %edi ret END (memset) diff --git a/sysdeps/i386/i686/strcmp.S b/sysdeps/i386/i686/strcmp.S new file mode 100644 index 0000000000..8ffc5b0bb5 --- /dev/null +++ b/sysdeps/i386/i686/strcmp.S @@ -0,0 +1,48 @@ +/* Highly optimized version for ix86, x>=6. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999. + + 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: + s1 (sp + 4) + s2 (sp + 8) +*/ + + + .text +ENTRY (strcmp) + movl 4(%esp), %ecx + movl 8(%esp), %edx +1: movb (%ecx), %al + incl %ecx + cmpb (%edx), %al + jne 2f + incl %edx + testb %al, %al + jnz 1b + xorl %eax, %eax + jmp 3f +2: movl $1, %eax + ja 3f + negl %eax +3: ret +END (strcmp) |