}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = x
}

type itimerval struct {
	it_interval timeval
	it_value    timeval
}

type mcontextt struct {
	__gregs [35]uint64
	__fregs [4160]byte // _NFREG * 128 + 32 + 32
	_       [8]uint64  // future use
}

type ucontextt struct {
	uc_flags    uint32
	uc_link     *ucontextt
	uc_sigmask  sigset
	uc_stack    stackt

}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = x
}

type itimerval struct {
	it_interval timeval
	it_value    timeval
}

type mcontextt struct {
	__gregs     [19]uint32
	__fpregs    [644]byte
	_mc_tlsbase int32
}

type ucontextt struct {
	uc_flags    uint32
	uc_link     *ucontextt
	uc_sigmask  sigset
	uc_stack    stackt
	uc_mcontext mcontextt

}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = x
}

type itimerval struct {
	it_interval timeval
	it_value    timeval
}

type mcontextt struct {
	__gregs     [26]uint64
	_mc_tlsbase uint64
	__fpregs    [512]int8
}

type ucontextt struct {
	uc_flags    uint32
	pad_cgo_0   [4]byte
	uc_link     *ucontextt
	uc_sigmask  sigset
	uc_stack    stackt
	uc_mcontext mcontextt

	si_errno  int32
	si_code   int32
	si_pid    int32
	si_uid    uint32
	si_status int32
	si_addr   uintptr
	si_value  [4]byte
	_reason   [32]byte
}

type mcontext struct {
	__gregs [17]uint32
	__fpu   [140]byte
}

type ucontext struct {
	uc_sigmask  sigset
	uc_mcontext mcontext
	uc_link     *ucontext
	uc_stack    stackt
	uc_flags    int32
	__spare__   [4]int32
}

	// See https://github.com/golang/go/issues/30824#issuecomment-492772426
	// This is only correct in the non-cgo case.
	// XXX should use lwp_getprivate as suggested.
	// 8*36 is ucontext.uc_mcontext.__gregs[_REG_X28]
	MOVD	8*36(g), g

	// this might be called in external code context,
	// where g is not set.
	// first save R0, because runtime·load_g will clobber it
	MOVD	R0, 8(RSP)		// signum

func (c *sigctxt) rbx() uint64 { return uint64(c.regs().gregs[_REG_RBX]) }
func (c *sigctxt) rcx() uint64 { return uint64(c.regs().gregs[_REG_RCX]) }
func (c *sigctxt) rdx() uint64 { return uint64(c.regs().gregs[_REG_RDX]) }
func (c *sigctxt) rdi() uint64 { return uint64(c.regs().gregs[_REG_RDI]) }
func (c *sigctxt) rsi() uint64 { return uint64(c.regs().gregs[_REG_RSI]) }

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

type sigcontext struct {
	_unused     [4]uint64
	signal      int32
	_pad0       int32
	handler     uint64
	oldmask     uint64
	regs        *ptregs
	gp_regs     [48]uint64
	fp_regs     [33]float64
	v_regs      *vreg
	vmx_reserve [101]int64
}

type ucontext struct {
	uc_flags    uint64
	uc_link     *ucontext
	uc_stack    stackt
	uc_sigmask  uint64
	__unused    [15]uint64
	uc_mcontext sigcontext

}

type sigactiont struct {
	sa_flags  int32
	pad_cgo_0 [4]byte
	_funcptr  [8]byte
	sa_mask   sigset
}

type fpregset struct {
	fp_reg_set [528]byte
}

type mcontext struct {
	gregs  [28]int64
	fpregs fpregset
}

type ucontext struct {
	uc_flags    uint64
	uc_link     *ucontext
	uc_sigmask  sigset
	uc_stack    stackt
	pad_cgo_0   [8]byte
	uc_mcontext mcontext

type sigcontext struct {
	_unused     [4]uint64
	signal      int32
	_pad0       int32
	handler     uint64
	oldmask     uint64
	regs        *ptregs
	gp_regs     [48]uint64
	fp_regs     [33]float64
	v_regs      *vreg
	vmx_reserve [101]int64
}

type ucontext struct {
	uc_flags    uint64
	uc_link     *ucontext
	uc_stack    stackt
	uc_sigmask  uint64
	__unused    [15]uint64
	uc_mcontext sigcontext