| /* |
| * Copyright 2005-2010 Analog Devices Inc. |
| * |
| * Licensed under the Clear BSD license or the GPL-2 (or later) |
| */ |
| |
| #include <linux/linkage.h> |
| |
| /* void *strncpy(char *s1, const char *s2, size_t n); |
| * R0 = address (dest) |
| * R1 = address (src) |
| * R2 = size (n) |
| * Returns a pointer to the destination string dest |
| */ |
| |
| #ifdef CONFIG_STRNCMP_L1 |
| .section .l1.text |
| #else |
| .text |
| #endif |
| |
| .align 2 |
| |
| ENTRY(_strncmp) |
| CC = R2 == 0; |
| if CC JUMP 5f; |
| |
| P0 = R0 ; /* s1 */ |
| P1 = R1 ; /* s2 */ |
| 1: |
| R0 = B[P0++] (Z); /* get *s1 */ |
| R1 = B[P1++] (Z); /* get *s2 */ |
| CC = R0 == R1; /* compare a byte */ |
| if ! cc jump 3f; /* not equal, break out */ |
| CC = R0; /* at end of s1? */ |
| if ! cc jump 4f; /* yes, all done */ |
| R2 += -1; /* no, adjust count */ |
| CC = R2 == 0; |
| if ! cc jump 1b (bp); /* more to do, keep going */ |
| 2: |
| R0 = 0; /* strings are equal */ |
| jump.s 4f; |
| 3: |
| R0 = R0 - R1; /* *s1 - *s2 */ |
| 4: |
| RTS; |
| |
| 5: |
| R0 = 0; |
| RTS; |
| |
| ENDPROC(_strncmp) |
