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64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* Copyright Richard A. O'Keefe.
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Copyright (c) 2000 TXT DataKonsult Ab & Monty Program Ab
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Copyright (c) 2009-2011, Monty Program Ab
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* File : memset.c
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Author : Richard A. O'Keefe.
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Updated: 25 May 1984
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Defines: memset()
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memset(dst, chr, len)
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fills the memory area dst[0..len-1] with len bytes all equal to chr.
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The result is dst. See also bfill(), which has no return value and
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puts the last two arguments the other way around.
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Note: the VAX assembly code version can only handle 0 <= len < 2^16.
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It is presented for your interest and amusement.
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*/
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#include "strings.h"
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#if VaxAsm
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char *memset(char *dst,int chr, int len)
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{
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asm("movc5 $0,*4(ap),8(ap),12(ap),*4(ap)");
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return dst;
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}
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#else ~VaxAsm
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char *memset(char *dst, register pchar chr, register int len)
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{
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register char *d;
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for (d = dst; --len >= 0; *d++ = chr) ;
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return dst;
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}
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#endif VaxAsm
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