+#define BLOCK_INSN_LIMIT 128
+
+/* op_flags */
+#define OF_DELAY_OP (1 << 0)
+#define OF_BTARGET (1 << 1)
+#define OF_T_SET (1 << 2) // T is known to be set
+#define OF_T_CLEAR (1 << 3) // ... clear
+
+void scan_block(unsigned int base_pc, int is_slave,
+ unsigned char *op_flags, unsigned int *end_pc,
+ unsigned int *end_literals);