1/* 2 * Copyright 2005-2010 Analog Devices Inc. 3 * 4 * Licensed under the ADI BSD license or the GPL-2 (or later) 5 */ 6 7#include <linux/linkage.h> 8 9/* void *strcmp(char *s1, const char *s2); 10 * R0 = address (s1) 11 * R1 = address (s2) 12 * 13 * Returns an integer less than, equal to, or greater than zero if s1 14 * (or the first n bytes thereof) is found, respectively, to be less 15 * than, to match, or be greater than s2. 16 */ 17 18#ifdef CONFIG_STRCMP_L1 19.section .l1.text 20#else 21.text 22#endif 23 24.align 2 25 26ENTRY(_strcmp) 27 P0 = R0 ; /* s1 */ 28 P1 = R1 ; /* s2 */ 29 301: 31 R0 = B[P0++] (Z); /* get *s1 */ 32 R1 = B[P1++] (Z); /* get *s2 */ 33 CC = R0 == R1; /* compare a byte */ 34 if ! cc jump 2f; /* not equal, break out */ 35 CC = R0; /* at end of s1? */ 36 if cc jump 1b (bp); /* no, keep going */ 37 jump.s 3f; /* strings are equal */ 382: 39 R0 = R0 - R1; /* *s1 - *s2 */ 403: 41 RTS; 42 43ENDPROC(_strcmp) 44