usr/src/lib/libc/tahoe/string/strcat.s

#ifdef LIBC_SCCS
        .asciz  "@(#)strcat.s   1.1 (Berkeley/CCI) %G%"
#endif LIBC_SCCS

/*
 * Concatenate s2 on the end of s1.  S1's space must be large enough.
 * Return s1.
 *
 * char * strcat(s1, s2)
 * register char *s1, *s2;
*/
#include "DEFS.h"

ENTRY(strcat, 0)
        movl    4(fp),r0
        movl    r0,r1
        cmps2                   # r0 and r1 point at null at end of s1
        movl    8(fp),r0        # source string
        movs2
        movl    4(fp),r0
        ret