| /* |
| * Copyright 2005-2009 Analog Devices Inc. |
| * |
| * Licensed under the Clear BSD license or the GPL-2 (or later) |
| */ |
| |
| #include <linux/linkage.h> |
| |
| /* void *memchr(const void *s, int c, size_t n); |
| * R0 = address (s) |
| * R1 = sought byte (c) |
| * R2 = count (n) |
| * |
| * Returns pointer to located character. |
| */ |
| |
| .text |
| |
| .align 2 |
| |
| ENTRY(_memchr) |
| P0 = R0; /* P0 = address */ |
| P2 = R2; /* P2 = count */ |
| R1 = R1.B(Z); |
| CC = R2 == 0; |
| IF CC JUMP .Lfailed; |
| |
| .Lbytes: |
| LSETUP (.Lbyte_loop_s, .Lbyte_loop_e) LC0=P2; |
| |
| .Lbyte_loop_s: |
| R3 = B[P0++](Z); |
| CC = R3 == R1; |
| IF CC JUMP .Lfound; |
| .Lbyte_loop_e: |
| NOP; |
| |
| .Lfailed: |
| R0=0; |
| RTS; |
| |
| .Lfound: |
| R0 = P0; |
| R0 += -1; |
| RTS; |
| |
| ENDPROC(_memchr) |
