sc_r9     uint32
	sc_r10    uint32
	sc_r11    uint32
	sc_r12    uint32
	sc_usr_sp uint32
	sc_usr_lr uint32
	sc_svc_lr uint32
	sc_pc     uint32
	sc_fpused uint32
	sc_fpscr  uint32
	sc_fpreg  [32]uint64
}

type siginfo struct {
	si_signo  int32
	si_code   int32
	si_errno  int32
	pad_cgo_0 [4]byte
	_data     [120]byte
}

type stackt struct {
	ss_sp    uintptr

	{ACLO, C_REG, C_NONE, C_REG, 9, 4, 0, 0, 0},

	{AADDF, C_FREG, C_NONE, C_FREG, 32, 4, 0, 0, 0},
	{AADDF, C_FREG, C_REG, C_FREG, 32, 4, 0, 0, 0},
	{ACMPEQF, C_FREG, C_REG, C_NONE, 32, 4, 0, 0, 0},
	{AABSF, C_FREG, C_NONE, C_FREG, 33, 4, 0, 0, 0},
	{AMOVVF, C_FREG, C_NONE, C_FREG, 33, 4, 0, sys.MIPS64, 0},
	{AMOVF, C_FREG, C_NONE, C_FREG, 33, 4, 0, 0, 0},
	{AMOVD, C_FREG, C_NONE, C_FREG, 33, 4, 0, 0, 0},

	{AMOVF, C_ZFCON, C_NONE, C_FREG, 80, 8, 0, 0, 0, 0},
	{AMOVF, C_SFCON, C_NONE, C_FREG, 81, 4, 0, 0, 0, 0},
	{ACMPF, C_FREG, C_FREG, C_NONE, 82, 8, 0, 0, 0, 0},
	{ACMPF, C_FREG, C_NONE, C_NONE, 83, 8, 0, 0, 0, 0},
	{AMOVFW, C_FREG, C_NONE, C_FREG, 84, 4, 0, 0, 0, C_UBIT},
	{AMOVWF, C_FREG, C_NONE, C_FREG, 85, 4, 0, 0, 0, C_UBIT},
	{AMOVFW, C_FREG, C_NONE, C_REG, 86, 8, 0, 0, 0, C_UBIT},

func (c *sigctxt) r8() uint64  { return c.regs().sc_reg[8] }
func (c *sigctxt) r9() uint64  { return c.regs().sc_reg[9] }
func (c *sigctxt) r10() uint64 { return c.regs().sc_reg[10] }
func (c *sigctxt) r11() uint64 { return c.regs().sc_reg[11] }
func (c *sigctxt) r12() uint64 { return c.regs().sc_reg[12] }
func (c *sigctxt) r13() uint64 { return c.regs().sc_reg[13] }
func (c *sigctxt) r14() uint64 { return c.regs().sc_reg[14] }

	LEAF    = 1 << 2
	SYNC    = 1 << 3
	BRANCH  = 1 << 4
	LOAD    = 1 << 5
	FCMP    = 1 << 6
	NOSCHED = 1 << 7

	NSCHED = 20
)

const (
	C_NONE = iota
	C_REG
	C_FREG
	C_FCREG
	C_MREG /* special processor register */
	C_WREG /* MSA registers */
	C_HI
	C_LO
	C_ZCON
	C_SCON /* 16 bit signed */
	C_UCON /* 32 bit signed, low 16 bits 0 */
	C_ADD0CON
	C_AND0CON

	C_HAUTO  /* halfword insn offset (-0xff to 0xff) */
	C_FAUTO  /* float insn offset (0 to 0x3fc, word aligned) */
	C_HFAUTO /* both H and F */
	C_SAUTO  /* -0xfff to 0xfff */
	C_LAUTO

	C_HOREG
	C_FOREG
	C_HFOREG
	C_SOREG
	C_ROREG
	C_SROREG /* both nil and R */
	C_LOREG

	C_PC
	C_SP
	C_HREG

	C_ADDR /* reference to relocatable address */

	{AADDF, C_FREG, C_NONE, C_NONE, C_FREG, C_NONE, 32, 4, 0, 0},
	{AADDF, C_FREG, C_REG, C_NONE, C_FREG, C_NONE, 32, 4, 0, 0},
	{ACMPEQF, C_FREG, C_REG, C_NONE, C_NONE, C_NONE, 32, 4, 0, 0},
	{AABSF, C_FREG, C_NONE, C_NONE, C_FREG, C_NONE, 33, 4, 0, 0},
	{AMOVVF, C_FREG, C_NONE, C_NONE, C_FREG, C_NONE, 33, 4, 0, 0},
	{AMOVF, C_FREG, C_NONE, C_NONE, C_FREG, C_NONE, 33, 4, 0, 0},

	tf_tid   *int32
	tf_stack uintptr
}

type sigcontext struct {
	sc_cookie  uint64
	sc_mask    uint64
	sc_pc      uint64
	sc_regs    [32]uint64
	mullo      uint64
	mulhi      uint64
	sc_fpregs  [33]uint64
	sc_fpused  uint64
	sc_fpc_eir uint64
	_xxx       [8]int64
}

type siginfo struct {
	si_signo  int32
	si_code   int32
	si_errno  int32
	pad_cgo_0 [4]byte
	_data     [120]byte

	{ASDIV, C_ZREG, C_ZREG, C_NONE, C_ZREG, C_NONE, 1, 4, 0, 0, 0},

	{AFADDS, C_FREG, C_NONE, C_NONE, C_FREG, C_NONE, 54, 4, 0, 0, 0},
	{AFADDS, C_FREG, C_FREG, C_NONE, C_FREG, C_NONE, 54, 4, 0, 0, 0},
	{AFMSUBD, C_FREG, C_FREG, C_FREG, C_FREG, C_NONE, 15, 4, 0, 0, 0},
	{AFCMPS, C_FREG, C_FREG, C_NONE, C_NONE, C_NONE, 56, 4, 0, 0, 0},
	{AFCMPS, C_FCON, C_FREG, C_NONE, C_NONE, C_NONE, 56, 4, 0, 0, 0},

	_O_CLOEXEC   = 0x80000
	_SA_RESTORER = 0
)

type stackt struct {
	ss_sp    *byte
	ss_size  uintptr
	ss_flags int32
}

type sigcontext struct {
	sc_regs      [32]uint64
	sc_fpregs    [32]uint64
	sc_mdhi      uint64
	sc_hi1       uint64
	sc_hi2       uint64
	sc_hi3       uint64
	sc_mdlo      uint64
	sc_lo1       uint64
	sc_lo2       uint64
	sc_lo3       uint64