de45083831
Change ADI BSD license to standart 3 clause BSD license for some blackfin arch code requested by ADI Legal. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
52 lines
1,023 B
ArmAsm
52 lines
1,023 B
ArmAsm
/*
|
|
* 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)
|