mc_esp           uint32
	mc_ss            uint32
	mc_len           uint32
	mc_fpformat      uint32
	mc_ownedfp       uint32
	mc_flags         uint32
	mc_fpstate       [128]uint32
	mc_fsbase        uint32
	mc_gsbase        uint32
	mc_xfpustate     uint32
	mc_xfpustate_len uint32
	mc_spare2        [4]uint32
}

type ucontext struct {
	uc_sigmask  sigset
	uc_mcontext mcontext
	uc_link     *ucontext

	mc_rflags        uint64
	mc_rsp           uint64
	mc_ss            uint64
	mc_len           uint64
	mc_fpformat      uint64
	mc_ownedfp       uint64
	mc_fpstate       [64]uint64
	mc_fsbase        uint64
	mc_gsbase        uint64
	mc_xfpustate     uint64
	mc_xfpustate_len uint64
	mc_spare         [4]uint64
}

type ucontext struct {
	uc_sigmask  sigset
	uc_mcontext mcontext
	uc_link     *ucontext

	sc_eip      uint32
	sc_cs       uint32
	sc_eflags   uint32
	sc_esp      uint32
	sc_ss       uint32
	__sc_unused uint32
	sc_mask     uint32
	sc_trapno   uint32
	sc_err      uint32
	sc_fpstate  unsafe.Pointer
}

type siginfo struct {
	si_signo int32
	si_code  int32
	si_errno int32
	_data    [116]byte
}

type stackt struct {
	ss_sp    uintptr
	ss_size  uintptr

	sc_es       uint64
	sc_ds       uint64
	sc_trapno   uint64
	sc_err      uint64
	sc_rip      uint64
	sc_cs       uint64
	sc_rflags   uint64
	sc_rsp      uint64
	sc_ss       uint64
	sc_fpstate  unsafe.Pointer
	__sc_unused int32
	sc_mask     int32
}

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