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/* Copyright Richard A. O'Keefe.
Copyright (c) 2000 TXT DataKonsult Ab & Monty Program Ab
Copyright (c) 2009-2011, Monty Program Ab
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must the following disclaimer in
the documentation and/or other materials provided with the
distribution.
THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* File : bmove.c
Author : Richard A. O'Keefe.
Michael Widenius; ifdef MC68000
Updated: 23 April 1984
Defines: bmove()
bmove(dst, src, len) moves exactly "len" bytes from the source "src"
to the destination "dst". It does not check for NUL characters as
strncpy() and strnmov() do. Thus if your C compiler doesn't support
structure assignment, you can simulate it with
bmove(&to, &from, sizeof from);
The standard 4.2bsd routine for this purpose is bcopy. But as bcopy
has its first two arguments the other way around you may find this a
bit easier to get right.
No value is returned.
Note: the "b" routines are there to exploit certain VAX order codes,
but the MOVC3 instruction will only move 65535 characters. The asm
code is presented for your interest and amusement.
*/
#include "strings_def.h"
#if !defined(HAVE_BMOVE) && !defined(bmove)
#if VaxAsm
void bmove(dst, src, len)
char *dst, *src;
uint len;
{
asm("movc3 12(ap),*8(ap),*4(ap)");
}
#else
#if defined(MC68000) && defined(DS90)
void bmove(dst, src, len)
char *dst,*src;
uint len; /* 0 <= len <= 65535 */
{
asm(" movl 12(a7),d0 ");
asm(" subql #1,d0 ");
asm(" blt .L5 ");
asm(" movl 4(a7),a1 ");
asm(" movl 8(a7),a0 ");
asm(".L4: movb (a0)+,(a1)+ ");
asm(" dbf d0,.L4 ");
asm(".L5: ");
}
#else
void bmove(dst, src, len)
register char *dst;
register const char *src;
register uint len;
{
while (len-- != 0) *dst++ = *src++;
}
#endif
#endif
#endif
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