MOVL CR0, AX // 0f20c0
	MOVL CR0, DX // 0f20c2
	MOVL CR4, DI // 0f20e7
	MOVL AX, CR0 // 0f22c0
	MOVL DX, CR0 // 0f22c2
	MOVL DI, CR4 // 0f22e7
	MOVL DR0, AX // 0f21c0
	MOVL DR6, DX // 0f21f2
	MOVL DR7, SI // 0f21fe
	// Test other movtab entries.
	PUSHL SS // 16
	PUSHL FS // 0fa0
	POPL FS  // 0fa1
	POPL SS  // 17

	RDPID AX                                // f30fc7f8

	// End of tests.

	cr0npxstate   uint32
}

type context struct {
	contextflags      uint32
	dr0               uint32
	dr1               uint32
	dr2               uint32
	dr3               uint32
	dr6               uint32
	dr7               uint32
	floatsave         floatingsavearea
	seggs             uint32
	segfs             uint32
	seges             uint32
	segds             uint32
	edi               uint32
	esi               uint32

	segss                uint16
	eflags               uint32
	dr0                  uint64
	dr1                  uint64
	dr2                  uint64
	dr3                  uint64
	dr6                  uint64
	dr7                  uint64
	rax                  uint64
	rcx                  uint64
	rdx                  uint64
	rbx                  uint64
	rsp                  uint64
	rbp                  uint64

	CR11: "CR11",
	CR12: "CR12",
	CR13: "CR13",
	CR14: "CR14",
	CR15: "CR15",
	DR0:  "DR0",
	DR1:  "DR1",
	DR2:  "DR2",
	DR3:  "DR3",
	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",

	MOVQ DR6, (AX)                  // ERROR "invalid instruction"
	MOVQ DR7, (AX)                  // ERROR "invalid instruction"
	MOVQ (AX), DR0                  // ERROR "invalid instruction"
	MOVQ (AX), DR2                  // ERROR "invalid instruction"
	MOVQ (AX), DR3                  // ERROR "invalid instruction"
	MOVQ (AX), DR6                  // ERROR "invalid instruction"
	MOVQ (AX), DR7                  // ERROR "invalid instruction"