PrefixREXR      Prefix = 0x04 // extension bit R (r field in modrm)
	PrefixREXX      Prefix = 0x02 // extension bit X (index field in sib)
	PrefixREXB      Prefix = 0x01 // extension bit B (r/m field in modrm or base field in sib)
	PrefixVEX2Bytes Prefix = 0xC5 // Short form of vex prefix
	PrefixVEX3Bytes Prefix = 0xC4 // Long form of vex prefix
)

// IsREX reports whether p is a REX prefix byte.

				// 32-bit or 64-bit form
				// Consume SIB encoding if present.
				if rm == 4 && mod != 3 {
					haveSIB = true
					if pos >= len(src) {
						return truncated(src, mode)
					}
					sib = int(src[pos])
					pos++
					if opshift >= 0 {
						inst.Opcode |= uint32(sib) << uint(opshift)
						opshift -= 8
					}
					scale = sib >> 6
					index = (sib >> 3) & 07
					base = sib & 07

		if !v.IsInAbstract {
			continue
		}
		putvar(ctxt, s, v, callee, abbrev, inlIndex, encbuf[:0])
	}

	// Children of this inline.
	for _, sib := range inlChildren(callIdx, &s.InlCalls) {
		err := putInlinedFunc(ctxt, s, sib)
		if err != nil {
			return err
		}
	}

	Uleb128put(ctxt, s.Info, 0)
	return nil
}

	X9:  "xmm9",
	X10: "xmm10",
	X11: "xmm11",
	X12: "xmm12",
	X13: "xmm13",
	X14: "xmm14",
	X15: "xmm15",

	// TODO: Maybe the constants are named wrong.
	SPB: "spl",
	BPB: "bpl",
	SIB: "sil",
	DIB: "dil",

	R8L:  "r8d",
	R9L:  "r9d",
	R10L: "r10d",
	R11L: "r11d",
	R12L: "r12d",
	R13L: "r13d",
	R14L: "r14d",
	R15L: "r15d",

var gccRegName = [...]string{
	0:    "REG0",
	AL:   "%al",
	CL:   "%cl",
	BL:   "%bl",
	DL:   "%dl",
	AH:   "%ah",
	CH:   "%ch",
	BH:   "%bh",
	DH:   "%dh",
	SPB:  "%spl",
	BPB:  "%bpl",
	SIB:  "%sil",
	DIB:  "%dil",
	R8B:  "%r8b",
	R9B:  "%r9b",
	R10B: "%r10b",
	R11B: "%r11b",
	R12B: "%r12b",
	R13B: "%r13b",
	R14B: "%r14b",
	R15B: "%r15b",
	AX:   "%ax",
	CX:   "%cx",