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/*
* 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)
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