for _, test := range tests {
		enc := EncodeRegisterRange(test.reg0, test.reg1)
		reg0, reg1 := decodeRegisterRange(enc)

		if int16(reg0) != test.reg0 {
			t.Errorf("%s reg0 mismatch: have %d, want %d",
				test.printed, reg0, test.reg0)
		}
		if int16(reg1) != test.reg1 {
			t.Errorf("%s reg1 mismatch: have %d, want %d",
				test.printed, reg1, test.reg1)
		}
		wantPrinted := test.printed

}

// EncodeRegisterRange packs [reg0-reg1] list into 64-bit value that
// is intended to be stored inside obj.Addr.Offset with TYPE_REGLIST.
func EncodeRegisterRange(reg0, reg1 int16) int64 {
	return (int64(reg0) << 0) |
		(int64(reg1) << 16) |
		obj.RegListX86Lo
}

// decodeRegisterRange unpacks [reg0-reg1] list from 64-bit value created by EncodeRegisterRange.

    missing="false"
    beingDeleted="false"
    deletingDependents="false"
    virtual="false"
  ];
  "ref2-" [
    label="uid=ref2-\nnamespace=ref2ns\nref2kind-.version.ref2group/ref2name-\n"
    group="ref2group"
    version="version"
    kind="ref2kind-"
    namespace="ref2ns"
    name="ref2name-"
    uid="ref2-"
    missing="false"
    beingDeleted="false"
    deletingDependents="false"
    virtual="false"
  ];

func (c *sigctxt) rbp() uint64 { return c.regs().rbp }
func (c *sigctxt) rsp() uint64 { return c.regs().rsp }
func (c *sigctxt) r8() uint64  { return c.regs().r8 }
func (c *sigctxt) r9() uint64  { return c.regs().r9 }
func (c *sigctxt) r10() uint64 { return c.regs().r10 }
func (c *sigctxt) r11() uint64 { return c.regs().r11 }
func (c *sigctxt) r12() uint64 { return c.regs().r12 }
func (c *sigctxt) r13() uint64 { return c.regs().r13 }

	expect: []structField{{
		name:  "Rec2",
		index: []int{0},
	}, {
		name:  "F",
		index: []int{0, 0},
	}, {
		name:  "Rec1",
		index: []int{0, 1},
	}},
}, {
	testName: "RecursiveEmbedding2",
	val:      Rec2{},
	expect: []structField{{
		name:  "F",
		index: []int{0},
	}, {
		name:  "Rec1",
		index: []int{1},
	}, {
		name:  "Rec2",
		index: []int{1, 0},
	}},
}, {

func (c *sigctxt) r5() uint64  { return c.regs().gpr[5] }
func (c *sigctxt) r6() uint64  { return c.regs().gpr[6] }
func (c *sigctxt) r7() uint64  { return c.regs().gpr[7] }
func (c *sigctxt) r8() uint64  { return c.regs().gpr[8] }
func (c *sigctxt) r9() uint64  { return c.regs().gpr[9] }
func (c *sigctxt) r10() uint64 { return c.regs().gpr[10] }
func (c *sigctxt) r11() uint64 { return c.regs().gpr[11] }

func (c *sigctxt) r6() uint64  { return c.regs().sc_regs[6] }
func (c *sigctxt) r7() uint64  { return c.regs().sc_regs[7] }
func (c *sigctxt) r8() uint64  { return c.regs().sc_regs[8] }
func (c *sigctxt) r9() uint64  { return c.regs().sc_regs[9] }
func (c *sigctxt) r10() uint64 { return c.regs().sc_regs[10] }
func (c *sigctxt) r11() uint64 { return c.regs().sc_regs[11] }
func (c *sigctxt) r12() uint64 { return c.regs().sc_regs[12] }

func (c *sigctxt) r6() uint64  { return c.regs().sc_regs[6] }
func (c *sigctxt) r7() uint64  { return c.regs().sc_regs[7] }
func (c *sigctxt) r8() uint64  { return c.regs().sc_regs[8] }
func (c *sigctxt) r9() uint64  { return c.regs().sc_regs[9] }
func (c *sigctxt) r10() uint64 { return c.regs().sc_regs[10] }
func (c *sigctxt) r11() uint64 { return c.regs().sc_regs[11] }
func (c *sigctxt) r12() uint64 { return c.regs().sc_regs[12] }

}

// PtraceSetRegsArm sets the registers used by arm binaries.
func PtraceSetRegsArm(pid int, regs *PtraceRegsArm) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsArm64 is the registers used by arm64 binaries.
type PtraceRegsArm64 struct {
	Regs   [31]uint64
	Sp     uint64
	Pc     uint64
	Pstate uint64
}

	return ptracePtr(PTRACE_GETREGS, pid, 0, unsafe.Pointer(regsout))
}

// PtraceSetRegs386 sets the registers used by 386 binaries.
func PtraceSetRegs386(pid int, regs *PtraceRegs386) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsAmd64 is the registers used by amd64 binaries.
type PtraceRegsAmd64 struct {
	R15      uint64
	R14      uint64
	R13      uint64
	R12      uint64