// anyway.
	sp := c.sp() - goarch.PtrSize
	c.set_sp(sp)
	*(*uint64)(unsafe.Pointer(uintptr(sp))) = c.ra()

	pc := gp.sigpc

	if shouldPushSigpanic(gp, pc, uintptr(c.ra())) {
		// Make it look the like faulting PC called sigpanic.
		c.set_ra(uint64(pc))
	}

	// In case we are panicking from external C code
	c.set_gp(uint64(uintptr(unsafe.Pointer(gp))))
	c.set_pc(uint64(abi.FuncPCABIInternal(sigpanic)))
}

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

func (c *sigctxt) set_r0(x uint64)      { c.regs().gregs[0] = x }
func (c *sigctxt) set_r13(x uint64)     { c.regs().gregs[13] = x }
func (c *sigctxt) set_link(x uint64)    { c.regs().gregs[14] = x }
func (c *sigctxt) set_sp(x uint64)      { c.regs().gregs[15] = x }
func (c *sigctxt) set_pc(x uint64)      { c.regs().psw_addr = x }

	pc := gp.sigpc

	if shouldPushSigpanic(gp, pc, uintptr(c.lr())) {
		// Make it look the like faulting PC called sigpanic.
		c.set_lr(uint64(pc))
	}

	// In case we are panicking from external C code
	c.set_r28(uint64(uintptr(unsafe.Pointer(gp))))
	c.set_pc(uint64(abi.FuncPCABIInternal(sigpanic)))
}

func (c *sigctxt) pushCall(targetPC, resumePC uintptr) {

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

func (c *sigctxt) set_pc(x uint32)  { c.regs().sc_pc = x }
func (c *sigctxt) set_sp(x uint32)  { c.regs().sc_usr_sp = x }
func (c *sigctxt) set_lr(x uint32)  { c.regs().sc_usr_lr = x }
func (c *sigctxt) set_r10(x uint32) { c.regs().sc_r10 = x }

func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }

func (c *sigctxt) sigcode() uint32 { return uint32(c.info._code) }
func (c *sigctxt) sigaddr() uint32 { return uint32(c.info._reason) }

func (c *sigctxt) set_pc(x uint32)  { c.regs().__gregs[_REG_R15] = x }
func (c *sigctxt) set_sp(x uint32)  { c.regs().__gregs[_REG_R13] = x }
func (c *sigctxt) set_lr(x uint32)  { c.regs().__gregs[_REG_R14] = x }
func (c *sigctxt) set_r10(x uint32) { c.regs().__gregs[_REG_R10] = x }

	reason := *(*string)(unsafe.Pointer(uintptr(sp) + 40))
	h.err = plainError(reason)
	ctxt.set_pc(ctxt.pc() + 4)
}

// case 16
func (h *debugCallHandler) restoreSigContext(ctxt *sigctxt) {
	// Restore all registers except for pc and sp
	pc, sp := ctxt.pc(), ctxt.sp()
	*ctxt.cregs() = h.sigCtxt.savedRegs
	ctxt.set_pc(pc + 4)
	ctxt.set_sp(sp)
}

// storeRegArgs sets up argument registers in the signal

func (c *sigctxt) sigcode() uint64 { return uint64(c.info._code) }
func (c *sigctxt) sigaddr() uint64 { return uint64(c.info._reason) }

func (c *sigctxt) set_pc(x uint64)  { c.regs().__gregs[_REG_ELR] = x }
func (c *sigctxt) set_sp(x uint64)  { c.regs().__gregs[_REG_X31] = x }
func (c *sigctxt) set_lr(x uint64)  { c.regs().__gregs[_REG_X30] = x }
func (c *sigctxt) set_r28(x uint64) { c.regs().__gregs[_REG_X28] = x }

func (c *sigctxt) sigaddr() uint64 { return uint64(uintptr(unsafe.Pointer(c.info.si_addr))) }

func (c *sigctxt) set_pc(x uint64)  { c.regs().pc = x }
func (c *sigctxt) set_sp(x uint64)  { c.regs().sp = x }
func (c *sigctxt) set_lr(x uint64)  { c.regs().lr = x }
func (c *sigctxt) set_r28(x uint64) { c.regs().x[28] = x }

func (c *sigctxt) set_sigcode(x uint64) { c.info.si_code = int32(x) }

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().pc = x }
func (c *sigctxt) set_sp(x uint64)  { c.regs().sp = x }
func (c *sigctxt) set_lr(x uint64)  { c.regs().regs[30] = x }
func (c *sigctxt) set_r28(x uint64) { c.regs().regs[28] = x }

func (c *sigctxt) set_sigaddr(x uint64) {

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) set_lr(x uint64)  { c.regs().mc_gpregs.gp_lr = x }
func (c *sigctxt) set_r28(x uint64) { c.regs().mc_gpregs.gp_x[28] = x }