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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 : bfill.c
Author : Richard A. O'Keefe.
Michael Widenius; ifdef MC68000
Updated: 23 April 1984
Defines: bfill()
bfill(dst, len, fill) moves "len" fill characters to "dst".
Thus to set a buffer to 80 spaces, do bfill(buff, 80, ' ').
Note: the "b" routines are there to exploit certain VAX order codes,
but the MOVC5 instruction will only move 65535 characters. The asm
code is presented for your interest and amusement.
*/
#include "strings_def.h"
#if !defined(bfill) && !defined(HAVE_BFILL)
#if VaxAsm
void bfill(dst, len, fill)
char *dst;
uint len;
int fill; /* actually char */
{
asm("movc5 $0,*4(ap),12(ap),8(ap),*4(ap)");
}
#elif defined(MC68000) && defined(DS90)
void bfill(dst, len,fill) /* Optimized with long-fill */
char *dst;
uint len;
pchar fill;
{
asm(" movl 8.(a7),d1 ");
asm(" jeq .L9 ");
asm(" movl 4.(a7),a0 ");
asm(" moveq #0,d0 ");
asm(" movb 15.(a7),d0 ");
asm(" movl d2,a1 ");
asm(" movw d0,d2 ");
asm(" aslw #8,d0 ");
asm(" orw d2,d0 ");
asm(" movl d0,d2 ");
asm(" swap d0 ");
asm(" orl d2,d0 ");
asm(" movl a0,d2 ");
asm(" btst #0,d2 ");
asm(" jeq .L1 ");
asm(" movb d0,(a0)+ ");
asm(" subql #1,d1 ");
asm(".L1: movl d1,d2 ");
asm(" lsrl #2,d2 ");
asm(" jcc .L2 ");
asm(" movw d0,(a0)+ ");
asm(" jra .L2 ");
asm(".L3: movl d0,(a0)+ ");
asm(".L2: dbra d2,.L3 ");
asm(" addqw #1,d2 ");
asm(" subql #1,d2 ");
asm(" jcc .L3 ");
asm(" andl #1,d1 ");
asm(" jeq .L8 ");
asm(" movb d0,(a0) ");
asm(".L8: movl a1,d2 ");
asm(".L9: rts ");
}
#else
void bfill(dst, len, fill)
register byte *dst;
register uint len;
register pchar fill;
{
while (len-- != 0) *dst++ = fill;
}
#endif
#endif
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