func (c *sigctxt) s1() uint64  { return uint64(c.regs().sc_s[1]) }
func (c *sigctxt) a0() uint64  { return uint64(c.regs().sc_a[0]) }
func (c *sigctxt) a1() uint64  { return uint64(c.regs().sc_a[1]) }
func (c *sigctxt) a2() uint64  { return uint64(c.regs().sc_a[2]) }
func (c *sigctxt) a3() uint64  { return uint64(c.regs().sc_a[3]) }
func (c *sigctxt) a4() uint64  { return uint64(c.regs().sc_a[4]) }

	tf_tid   *int32
	tf_stack uintptr
}

type sigcontext struct {
	__sc_unused int32
	sc_mask     int32
	sc_ra       uintptr
	sc_sp       uintptr
	sc_gp       uintptr
	sc_tp       uintptr
	sc_t        [7]uintptr
	sc_s        [12]uintptr
	sc_a        [8]uintptr
	sc_sepc     uintptr
	sc_f        [32]uintptr
	sc_fcsr     uintptr
	sc_cookie   int64
}

type siginfo struct {
	si_signo  int32

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

	tf_tid   *int32
	tf_stack uintptr
}

type sigcontext struct {
	__sc_unused int32
	sc_mask     int32
	sc_sp       uintptr
	sc_lr       uintptr
	sc_elr      uintptr
	sc_spsr     uintptr
	sc_x        [30]uintptr
	sc_cookie   int64
}

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

type stackt struct {