--- /dev/null
+/*
+ * tests for system control instruction relaxation
+ *
+ * Author: libin
+ */
+
+.include "relaxation_macro.h"
+
+.text
+/* sdbbp Imm5 -> sdbbp! Imm5 */
+insn_32 "sdbbp 0"
+insn_32 "sdbbp 31"
+
+tran_16_32 "sdbbp! 0", "sdbbp 0"
+
+/* nop -> nop! */
+insn_32 "nop"
+
+tran_16_32 "nop!", "nop"