summaryrefslogtreecommitdiffstats
path: root/arch/arm/lib/strchr.S
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/lib/strchr.S
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/lib/strchr.S')
-rw-r--r--arch/arm/lib/strchr.S24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/lib/strchr.S b/arch/arm/lib/strchr.S
new file mode 100644
index 000000000..09e2cc8a8
--- /dev/null
+++ b/arch/arm/lib/strchr.S
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/arch/arm/lib/strchr.S
+ *
+ * Copyright (C) 1995-2000 Russell King
+ *
+ * ASM optimised string functions
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ .text
+ .align 5
+ENTRY(strchr)
+ and r1, r1, #0xff
+1: ldrb r2, [r0], #1
+ teq r2, r1
+ teqne r2, #0
+ bne 1b
+ teq r2, r1
+ movne r0, #0
+ subeq r0, r0, #1
+ ret lr
+ENDPROC(strchr)