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/* 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_s strlen(char *s)
{
asm("locc $0,$65535,*4(ap)");
asm("subl3 r0,$65535,r0");
}
#else
#if defined(MC68000) && defined(DS90)
size_s 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_s strlen(register char *s)
{
register char *startpos;
startpos = s;
while (*s++);
return ((size_s) (s-startpos-1));
}
#endif
#endif
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