| /* |
| * Copyright 2005-2010 Analog Devices Inc. |
| * |
| * Licensed under the ADI BSD license or the GPL-2 (or later) |
| */ |
| |
| #include <linux/linkage.h> |
| |
| /* void *strncpy(char *dest, const char *src, size_t n); |
| * R0 = address (dest) |
| * R1 = address (src) |
| * R2 = size |
| * Returns a pointer to the destination string dest |
| */ |
| |
| #ifdef CONFIG_STRNCPY_L1 |
| .section .l1.text |
| #else |
| .text |
| #endif |
| |
| .align 2 |
| |
| ENTRY(_strncpy) |
| CC = R2 == 0; |
| if CC JUMP 4f; |
| P0 = R0 ; /* dst*/ |
| P1 = R1 ; /* src*/ |
| |
| 1: |
| R1 = B [P1++] (Z); |
| B [P0++] = R1; |
| CC = R1; |
| if ! cc jump 2f; |
| R2 += -1; |
| CC = R2 == 0; |
| if ! cc jump 1b (bp); |
| jump 4f; |
| 2: |
| /* if src is shorter than n, we need to null pad bytes in dest */ |
| R1 = 0; |
| 3: |
| R2 += -1; |
| CC = R2 == 0; |
| if cc jump 4f; |
| B [P0++] = R1; |
| jump 3b; |
| |
| 4: |
| RTS; |
| |
| ENDPROC(_strncpy) |