#define TARGET_SIZE_B    0x0
#define TARGET_SIZE_W    0x1
#define TARGET_SIZE_L    0x2
#define TARGET_SIZE_zext 1 << 2

#define ADDR_SIZE_B (0x0 << 3)
#define ADDR_SIZE_W (0x1 << 3)
#define ADDR_SIZE_L (0x2 << 3)

#define TARGET_SIZE(x) (x & 0x3)
#define TARGET_ZEXT(x) (x & 0x4)
#define ADDR_SIZE(x)   (x >> 3)

#define FIT8(x)  (((x) & ~((int)0xFF)) == 0)
#define FIT16(x) (((x) & ~((int)0xFFFF)) == 0)

void encode_imm(int opc, int sz, expr_t exp);
void encode_addr(expr_t exp, int sz);
void branch(register int opc,expr_t exp);