DR4:  "DR4",
	DR5:  "DR5",
	DR6:  "DR6",
	DR7:  "DR7",
	DR8:  "DR8",
	DR9:  "DR9",
	DR10: "DR10",
	DR11: "DR11",
	DR12: "DR12",
	DR13: "DR13",
	DR14: "DR14",
	DR15: "DR15",
	TR0:  "TR0",
	TR1:  "TR1",
	TR2:  "TR2",
	TR3:  "TR3",
	TR4:  "TR4",
	TR5:  "TR5",
	TR6:  "TR6",
	TR7:  "TR7",

	v[i] = (v[i] & 0xFF00) >> 6
	i++
	// ppc64x: "MOVW\tR0"
	v[i] = (v[i] & 0xFF) >> 8
	i++
	// ppc64x: "MOVW\tR0"
	v[i] = (v[i] & 0xF000000) >> 28
	i++
	// ppc64x: "RLWNM\t[$]26, R[0-9]+, [$]24, [$]31, R[0-9]+"
	v[i] = (v[i] >> 6) & 0xFF
	i++
	// ppc64x: "RLWNM\t[$]26, R[0-9]+, [$]12, [$]19, R[0-9]+"
	v[i] = (v[i] >> 6) & 0xFF000
	i++
	// ppc64x: "MOVW\tR0"
	v[i] = (v[i] >> 20) & 0xFF000
	i++

	CR13: "%cr13",
	CR14: "%cr14",
	CR15: "%cr15",
	DR0:  "%db0",
	DR1:  "%db1",
	DR2:  "%db2",
	DR3:  "%db3",
	DR4:  "%db4",
	DR5:  "%db5",
	DR6:  "%db6",
	DR7:  "%db7",
	TR0:  "%tr0",
	TR1:  "%tr1",
	TR2:  "%tr2",
	TR3:  "%tr3",
	TR4:  "%tr4",
	TR5:  "%tr5",
	TR6:  "%tr6",
	TR7:  "%tr7",
}

var gnuOp = map[Op]string{
	CBW:       "cbtw",
	CDQ:       "cltd",

	xArgRel8         // arg rel8
	xArgSS           // arg SS
	xArgST           // arg ST, aka ST(0)
	xArgSTi          // arg ST(i) with +i in opcode
	xArgSreg         // arg Sreg
	xArgTR0dashTR7   // arg TR0-TR7
	xArgXmm          // arg xmm
	xArgXMM0         // arg <XMM0>
	xArgXmm1         // arg xmm1
	xArgXmm2         // arg xmm2
	xArgXmm2M128     // arg xmm2/m128
	xArgYmm2M256     // arg ymm2/m256