//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) pc() uint64 { return uint64(c.regs().sc_sepc) }

func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 {
	return *(*uint64)(add(unsafe.Pointer(c.info), 2*goarch.PtrSize))
}

func (c *sigctxt) set_pc(x uint64) { c.regs().sc_sepc = uintptr(x) }
func (c *sigctxt) set_ra(x uint64) { c.regs().sc_ra = uintptr(x) }

func (c *sigctxt) lo() uint64   { return c.regs().mullo }
func (c *sigctxt) hi() uint64   { return c.regs().mulhi }

func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 {
	return *(*uint64)(add(unsafe.Pointer(c.info), 16))
}

func (c *sigctxt) set_r28(x uint64)  { c.regs().sc_regs[28] = x }
func (c *sigctxt) set_r30(x uint64)  { c.regs().sc_regs[30] = x }

	SYS_MSGRCV         = 227 // { int sys_msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg); }
	SYS_SHMAT          = 228 // { void *sys_shmat(int shmid, const void *shmaddr, int shmflg); }
	SYS_SHMDT          = 230 // { int sys_shmdt(const void *shmaddr); }
	SYS_MINHERIT       = 250 // { int sys_minherit(void *addr, size_t len, int inherit); }
	SYS_POLL           = 252 // { int sys_poll(struct pollfd *fds, u_int nfds, int timeout); }

	SYS_MSGRCV         = 227 // { int sys_msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg); }
	SYS_SHMAT          = 228 // { void *sys_shmat(int shmid, const void *shmaddr, int shmflg); }
	SYS_SHMDT          = 230 // { int sys_shmdt(const void *shmaddr); }
	SYS_MINHERIT       = 250 // { int sys_minherit(void *addr, size_t len, int inherit); }
	SYS_POLL           = 252 // { int sys_poll(struct pollfd *fds, u_int nfds, int timeout); }

	ss_size   uintptr
	ss_flags  int32
	pad_cgo_0 [4]byte
}

type siginfo struct {
	si_signo  int32
	si_errno  int32
	si_code   int32
	si_pid    int32
	si_uid    uint32
	si_status int32
	si_addr   uint64
	si_value  [8]byte
	_reason   [40]byte
}

type mcontext struct {
	mc_onstack       uint64
	mc_rdi           uint64
	mc_rsi           uint64
	mc_rdx           uint64

					// section found in the original object file.
					//
					// [For future reference, see Darwin's /usr/include/mach-o/x86_64/reloc.h]
					secaddr := c.seg.sect[rel.symnum-1].addr
					rAdd = int64(uint64(int64(int32(e.Uint32(p[rOff:])))+int64(rOff)+4) - secaddr)
				} else {
					rAdd = int64(int32(e.Uint32(p[rOff:])))
				}
			}

			// An unsigned internal relocation has a value offset

func (c *sigctxt) sigsp() uintptr { return uintptr(c.sp()) }
func (c *sigctxt) siglr() uintptr { return uintptr(c.ra()) }
func (c *sigctxt) fault() uintptr { return uintptr(c.sigaddr()) }

// preparePanic sets up the stack to look like a call to sigpanic.
func (c *sigctxt) preparePanic(sig uint32, gp *g) {
	// We arrange RA, and pc to pretend the panicking
	// function calls sigpanic directly.

func (c *sigctxt) sigpc() uintptr { return uintptr(c.pc()) }
func (c *sigctxt) sigsp() uintptr { return uintptr(c.sp()) }
func (c *sigctxt) siglr() uintptr { return uintptr(c.link()) }
func (c *sigctxt) fault() uintptr { return uintptr(c.sigaddr()) }

// preparePanic sets up the stack to look like a call to sigpanic.
func (c *sigctxt) preparePanic(sig uint32, gp *g) {
	// We arrange link, and pc to pretend the panicking
	// function calls sigpanic directly.

	ss_sp    uintptr
	ss_size  uintptr
	ss_flags int32
}

type siginfo struct {
	si_signo  int32
	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 {
	mc_onstack       uint32
	mc_gs            uint32
	mc_fs            uint32
	mc_es            uint32

	ss_size   uintptr
	ss_flags  int32
	pad_cgo_0 [4]byte
}

type siginfo struct {
	si_signo  int32
	si_errno  int32
	si_code   int32
	si_pid    int32
	si_uid    uint32
	si_status int32
	si_addr   uint64
	si_value  [8]byte
	_reason   [40]byte
}

type gpregs struct {
	gp_ra      uint64
	gp_sp      uint64
	gp_gp      uint64
	gp_tp      uint64
	gp_t       [7]uint64