1/* 2 * Copyright (c) 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * This code is derived from software contributed to Berkeley by 18 * Computer Consoles Inc. 19 */ 20 21#if defined(LIBC_SCCS) && !defined(lint) 22 .asciz "@(#)strncmp.s 1.3 (Berkeley) 06/27/88" 23#endif /* LIBC_SCCS and not lint */ 24 25/* 26 * Compare strings (at most n bytes): s1>s2: >0 s1==s2: 0 s1<s2: <0 27 * 28 * strncmp(s1, s2, n) 29 * register char *s1, *s2; 30 * register n; 31 */ 32#include "DEFS.h" 33 34ENTRY(strncmp, 0) 35 movl 12(fp),r2 36 tstl r2 /* number of bytes to compare */ 37 jgtr n_ok 38 clrl r0 39 ret /* for n <= 0 , s1 == s2 */ 40n_ok: 41 movl 4(fp),r0 42 movl 8(fp),r1 43 cmps3 44 jgtr greater 45 jlss less 46equal: clrl r0 47 ret 48less: movl $-1,r0 49 ret 50greater: movl $1,r0 51 ret 52