fix slices order, match some gu funcs

include/string.h

@@ -0,0 +1,21 @@
+#ifndef _MEM_H
+#define _MEM_H
+
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#pragma section code_type ".init"
+
+void * memcpy(void * dst, const void * src, size_t n);
+void * memset(void * dst, int val, size_t n);
+void __fill_mem(void * dst, int val, unsigned long n);
+
+#pragma section code_type
+
+#ifdef __cplusplus
+};
+#endif
+#endif