1479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz/* 2479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz * Copyright 2005-2010 Analog Devices Inc. 3479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz * 4479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz * Licensed under the ADI BSD license or the GPL-2 (or later) 5479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz */ 6479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 7479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz#include <linux/linkage.h> 8479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 9479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz/* void *strncpy(char *s1, const char *s2, size_t n); 10479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz * R0 = address (dest) 11479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz * R1 = address (src) 12479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz * R2 = size (n) 13479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz * Returns a pointer to the destination string dest 14479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz */ 15479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 16479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz#ifdef CONFIG_STRNCMP_L1 17479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz.section .l1.text 18479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz#else 19479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz.text 20479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz#endif 21479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 22479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz.align 2 23479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 24479ba6035862a9c08ce4351c7fff8926fde4ede5Robin GetzENTRY(_strncmp) 25479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz CC = R2 == 0; 26479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz if CC JUMP 5f; 27479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 28479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz P0 = R0 ; /* s1 */ 29479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz P1 = R1 ; /* s2 */ 30479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz1: 31479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz R0 = B[P0++] (Z); /* get *s1 */ 32479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz R1 = B[P1++] (Z); /* get *s2 */ 33479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz CC = R0 == R1; /* compare a byte */ 34479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz if ! cc jump 3f; /* not equal, break out */ 35479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz CC = R0; /* at end of s1? */ 36479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz if ! cc jump 4f; /* yes, all done */ 37479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz R2 += -1; /* no, adjust count */ 38479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz CC = R2 == 0; 39479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz if ! cc jump 1b (bp); /* more to do, keep going */ 40479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz2: 41479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz R0 = 0; /* strings are equal */ 42479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz jump.s 4f; 43479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz3: 44479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz R0 = R0 - R1; /* *s1 - *s2 */ 45479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz4: 46479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz RTS; 47479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 48479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz5: 49479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz R0 = 0; 50479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz RTS; 51479ba6035862a9c08ce4351c7fff8926fde4ede5Robin Getz 52479ba6035862a9c08ce4351c7fff8926fde4ede5Robin GetzENDPROC(_strncmp) 53