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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 : strlen.c
Author : Richard A. O'Keefe. / Monty
Michael Widenius; ifdef MC68000
Updated: 1986-11-30
Defines: strlen()
strlen(s) returns the number of characters in s, that is, the number
of non-NUL characters found before the closing NULEosCh. Note: some
non-standard C compilers for 32-bit machines take int to be 16 bits,
either put up with short strings or change int to long throughout
this package. Better yet, BOYCOTT such shoddy compilers.
Beware: the asm version works only if strlen(s) < 65536.
*/
#include "strings.h"
#if VaxAsm
size_t strlen(char *s)
{
asm("locc $0,$65535,*4(ap)");
asm("subl3 r0,$65535,r0");
}
#else
#if defined(MC68000) && defined(DS90)
size_t strlen(char *s)
{
asm(" movl 4(a7),a0 ");
asm(" movl a0,a1 ");
asm(".L4: tstb (a0)+ ");
asm(" jne .L4 ");
asm(" movl a0,d0 ");
asm(" subl a1,d0 ");
asm(" subql #1,d0 ");
}
#else
size_t strlen(register char *s)
{
register char *startpos;
startpos = s;
while (*s++);
return ((size_t) (s-startpos-1));
}
#endif
#endif
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