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ip -> r2 

teq -> cmp
This commit is contained in:
matt 2013-08-19 02:24:09 +00:00
parent 7ed75e50a6
commit f66bbc4e80
1 changed files with 5 additions and 5 deletions
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10
common/lib/libc/arch/arm/string/strrchr_naive.S
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@ -28,17 +28,17 @@
*/
#include <machine/asm.h>
RCSID("$NetBSD: strrchr_naive.S,v 1.1 2013/01/15 02:03:30 matt Exp $")
RCSID("$NetBSD: strrchr_naive.S,v 1.2 2013/08/19 02:24:09 matt Exp $")
/* LINTSTUB: char * strrchr(const char *, int) */
ENTRY(strrchr)
mov ip, r0 /* using r0 as return value */
mov r2, r0 /* using r0 as return value */
mov r0, #0 /* default to no match */
and r1, r1, #0xff /* restrict to a byte value */
1: ldrb r3, [ip], #1 /* read a byte */
1: ldrb r3, [r2], #1 /* read a byte */
cmp r3, r1 /* does it match? */
subeq r0, ip, #1 /* yes, set return value to point to it */
teq r3, #0 /* was it a NUL? */
subeq r0, r2, #1 /* yes, set return value to point to it */
cmp r3, #0 /* was it a NUL? */
bne 1b /* no, get next byte */
RET
END(strrchr)