+static enum riscv_halt_reason riscv_halt_reason(struct target *target, int hartid);
+static void riscv_info_init(struct target *target, struct riscv_info *r);
+static void riscv_invalidate_register_cache(struct target *target);
+static int riscv_step_rtos_hart(struct target *target);
+
+static void riscv_sample_buf_maybe_add_timestamp(struct target *target, bool before)