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/* Copyright (C) 2000 MySQL AB
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; version 2 of the License.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* File : bmove.c
Author : Michael widenius
Updated: 1987-03-20
Defines: bmove_upp()
bmove_upp(dst, src, len) moves exactly "len" bytes from the source
"src-len" to the destination "dst-len" counting downwards.
*/
#include <my_global.h>
#include "m_string.h"
#if defined(MC68000) && defined(DS90)
/* 0 <= len <= 65535 */
void bmove_upp(byte *dst, const byte *src,uint len)
{
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_upp(register uchar *dst, register const uchar *src,
register size_t len)
{
while (len-- != 0) *--dst = *--src;
}
#endif
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