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[libc] Relicense x86 string.h

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No code from the original source remains within this file; relicense
under GPL2+ with a new copyright notice.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2012-11-05 01:01:12 +00:00
parent 53f3deee06
commit 603455bb06
1 changed files with 25 additions and 20 deletions
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45
src/arch/x86/include/bits/string.h
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@ -1,27 +1,32 @@
#ifndef ETHERBOOT_BITS_STRING_H
#define ETHERBOOT_BITS_STRING_H
/*
* Taken from Linux /usr/include/asm/string.h
* All except memcpy, memmove, memset and memcmp removed.
*
* Non-standard memswap() function added because it saves quite a bit
* of code (mbrown@fensystems.co.uk).
*/
#ifndef X86_BITS_STRING_H
#define X86_BITS_STRING_H
/*
* This string-include defines all string functions as inline
* functions. Use gcc. It also assumes ds=es=data space, this should be
* normal. Most of the string-functions are rather heavily hand-optimized,
* see especially strtok,strstr,str[c]spn. They should work, but are not
* very easy to understand. Everything is done entirely within the register
* set, making the functions fast and clean. String instructions have been
* used through-out, making for "slightly" unclear code :-)
* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
*
* NO Copyright (C) 1991, 1992 Linus Torvalds,
* consider these trivial functions to be PD.
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( PUBLIC_DOMAIN );
FILE_LICENCE ( GPL2_OR_LATER );
/** @file
*
* Optimised string operations
*
*/
#define __HAVE_ARCH_MEMCPY
@ -224,4 +229,4 @@ extern int strncmp ( const char *str1, const char *str2, size_t len );
extern size_t strlen ( const char *string );
#endif /* ETHERBOOT_BITS_STRING_H */
#endif /* X86_BITS_STRING_H */