// TODO(aix): find trap equivalent
func (c *sigctxt) trap() uint32 { return 0x0 }

func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 { return uint64(c.info.si_addr) }
func (c *sigctxt) fault() uintptr  { return uintptr(c.sigaddr()) }

func (c *sigctxt) set_r0(x uint64)   { c.regs().gpr[0] = x }
func (c *sigctxt) set_r12(x uint64)  { c.regs().gpr[12] = x }

func (c *sigctxt) ccr() uint64  { return c.regs().sc_cr }

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) fault() uintptr { return uintptr(c.sigaddr()) }

func (c *sigctxt) set_r0(x uint64)   { c.regs().sc_reg[0] = x }
func (c *sigctxt) set_r12(x uint64)  { c.regs().sc_reg[12] = x }

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) rip() uint64 { return (uint64)(c.regs().sc_lr) } /* XXX */

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

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

func (c *sigctxt) sigpc() uintptr { return uintptr(c.eip()) }

func (c *sigctxt) sigsp() uintptr { return uintptr(c.esp()) }
func (c *sigctxt) siglr() uintptr { return 0 }
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) {
	pc := uintptr(c.eip())
	sp := uintptr(c.esp())

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

func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 { return c.info.si_addr }

func (c *sigctxt) set_pc(x uint64) { c.regs().mc_gpregs.gp_sepc = x }
func (c *sigctxt) set_ra(x uint64) { c.regs().mc_gpregs.gp_ra = x }
func (c *sigctxt) set_sp(x uint64) { c.regs().mc_gpregs.gp_sp = x }

func (c *sigctxt) fs() uint64      { return c.regs().__gregs[_REG_FS] }
func (c *sigctxt) gs() uint64      { return c.regs().__gregs[_REG_GS] }
func (c *sigctxt) sigcode() uint64 { return uint64(c.info._code) }
func (c *sigctxt) sigaddr() uint64 {
	return *(*uint64)(unsafe.Pointer(&c.info._reason[0]))
}

func (c *sigctxt) set_rip(x uint64)     { c.regs().__gregs[_REG_RIP] = x }
func (c *sigctxt) set_rsp(x uint64)     { c.regs().__gregs[_REG_RSP] = x }

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

func (c *sigctxt) fault() uintptr { return uintptr(c.info.si_addr) }

func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 { return c.info.si_addr }

func (c *sigctxt) set_pc(x uint64)  { c.regs().mc_gpregs.gp_elr = x }
func (c *sigctxt) set_sp(x uint64)  { c.regs().mc_gpregs.gp_sp = x }

func (c *sigctxt) hi() uint32        { return uint32(c.regs().sc_mdhi) }

func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
func (c *sigctxt) sigaddr() uint32 { return c.info.si_addr }

func (c *sigctxt) set_r30(x uint32)  { c.regs().sc_regs[30] = uint64(x) }
func (c *sigctxt) set_pc(x uint32)   { c.regs().sc_pc = uint64(x) }

func (c *sigctxt) setsigpc(x uint64) { c.set_rip(x) }
func (c *sigctxt) sigsp() uintptr    { return uintptr(c.rsp()) }
func (c *sigctxt) siglr() uintptr    { return 0 }
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) {
	// Work around Leopard bug that doesn't set FPE_INTDIV.

func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 { return c.info.si_addr }

func (c *sigctxt) set_rip(x uint64)     { c.regs().rip = x }
func (c *sigctxt) set_rsp(x uint64)     { c.regs().rsp = x }
func (c *sigctxt) set_sigcode(x uint64) { c.info.si_code = int32(x) }
func (c *sigctxt) set_sigaddr(x uint64) { c.info.si_addr = x }

//go:nosplit
func (c *sigctxt) fixsigcode(sig uint32) {
	switch sig {