GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/lib/libc/memrchr.c

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2019, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <string.h>
+
+#undef memrchr
+
+void *memrchr(const void *src, int c, size_t len)
+{
+	const unsigned char *s = src + (len - 1);
+
+	while (len--) {
+		if (*s == (unsigned char)c) {
+			return (void*) s;
+		}
+
+		s--;
+	}
+
+	return NULL;
+}