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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This 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.
This 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 this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02111-1301, 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, size_t 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 char *dst, register const char *src, register size_t len)
{
while (len-- != 0) *--dst = *--src;
}
#endif
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