summaryrefslogtreecommitdiffstats
path: root/arch/sh/lib/memchr.S
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--arch/sh/lib/memchr.S27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/sh/lib/memchr.S b/arch/sh/lib/memchr.S
new file mode 100644
index 000000000..8ded10407
--- /dev/null
+++ b/arch/sh/lib/memchr.S
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* $Id: memchr.S,v 1.1 2000/04/14 16:49:01 mjd Exp $
+ *
+ * "memchr" implementation of SuperH
+ *
+ * Copyright (C) 1999 Niibe Yutaka
+ *
+ */
+
+/*
+ * void *memchr(const void *s, int c, size_t n);
+ */
+
+#include <linux/linkage.h>
+ENTRY(memchr)
+ tst r6,r6
+ bt/s 2f
+ exts.b r5,r5
+1: mov.b @r4,r1
+ cmp/eq r1,r5
+ bt/s 3f
+ dt r6
+ bf/s 1b
+ add #1,r4
+2: mov #0,r4
+3: rts
+ mov r4,r0