mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 12:32:27 +01:00
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/* 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
|