Module Name: src
Committed By: matt
Date: Mon Aug 19 02:22:25 UTC 2013
Modified Files:
src/common/lib/libc/arch/arm/string: strchr_naive.S
Log Message:
Thumbify
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/common/lib/libc/arch/arm/string/strchr_naive.S
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/common/lib/libc/arch/arm/string/strchr_naive.S
diff -u src/common/lib/libc/arch/arm/string/strchr_naive.S:1.2 src/common/lib/libc/arch/arm/string/strchr_naive.S:1.3
--- src/common/lib/libc/arch/arm/string/strchr_naive.S:1.2 Mon Aug 19 02:20:06 2013
+++ src/common/lib/libc/arch/arm/string/strchr_naive.S Mon Aug 19 02:22:25 2013
@@ -28,10 +28,26 @@
*/
#include <machine/asm.h>
-RCSID("$NetBSD: strchr_naive.S,v 1.2 2013/08/19 02:20:06 matt Exp $")
+RCSID("$NetBSD: strchr_naive.S,v 1.3 2013/08/19 02:22:25 matt Exp $")
/* LINTSTUB: char * strchr(const char *, int) */
ENTRY(strchr)
+#ifdef __thumb__
+ movs r3, #0xff
+ ands r1, r1, r3 /* restrict to a byte value */
+1: ldrb r3, [r0] /* read a byte */
+ cmp r3, r1 /* does it match? */
+ beq 2f /* yes, set return value */
+ adds r0, r0, #1 /* advance to next byte */
+#ifdef _ARM_ARCH_T2
+ cbnz r3, 1b /* was it a NUL? no, get next byte */
+#else
+ cmp r3, #0 /* was it a NUL? */
+ bne 1b /* no, get next byte */
+#endif
+ movs r0, #0 /* set return to NULL */
+2: RET /* return */
+#else
mov r2, r0 /* using r0 as return value */
mov r0, #0 /* default to no match */
and r1, r1, #0xff /* restrict to a byte value */
@@ -41,4 +57,5 @@ ENTRY(strchr)
cmpne r3, #0 /* no, was it a NUL? */
bne 1b /* no, get next byte */
RET
+#endif
END(strchr)
