f_3c
struct f_3c f_3c;
#define OP3(x) (((union instruct *) (x))->f_3c.op3)
#define RD(x) (((union instruct *) (x))->f_3c.rd)
#define IMMED(x) (((union instruct *) (x))->f_3c.i)
#define RS1(x) (((union instruct *) (x))->f_3c.rs1)
#define RS2(x) (((union instruct *) (x))->f_3c.rs2)