// there is no possibility of strings from the crash report (which may
// contain PII) leaking into the telemetry system.
func parseStackPCs(crash string) ([]uintptr, error) {
	// getPC parses the PC out of a line of the form:
	//     \tFILE:LINE +0xRELPC sp=... fp=... pc=...
	getPC := func(line string) (uint64, error) {
		_, pcstr, ok := strings.Cut(line, " pc=") // e.g. pc=0x%x
		if !ok {
			return 0, fmt.Errorf("no pc= for stack frame: %s", line)

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

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) pc() uintptr { return uintptr(c.u.pc) }

func (c *sigctxt) sp() uintptr { return uintptr(c.u.sp) }
func (c *sigctxt) lr() uintptr { return uintptr(0) }

func (c *sigctxt) setpc(x uintptr) { c.u.pc = uint32(x) }
func (c *sigctxt) setsp(x uintptr) { c.u.sp = uint32(x) }
func (c *sigctxt) setlr(x uintptr) {}

func (c *sigctxt) savelr(x uintptr) {}

func dumpregs(u *ureg) {

func (c *sigctxt) fault() uintptr { return uintptr(c.regs().fault_address) }

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) 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) set_sp(x uint64) { c.regs().sc_sp = uintptr(x) }

//go:nowritebarrierrec
func (c *sigctxt) pc() uintptr { return uintptr(c.u.pc) }

func (c *sigctxt) sp() uintptr { return uintptr(c.u.sp) }
func (c *sigctxt) lr() uintptr { return uintptr(c.u.link) }

func (c *sigctxt) setpc(x uintptr)  { c.u.pc = uint32(x) }
func (c *sigctxt) setsp(x uintptr)  { c.u.sp = uint32(x) }
func (c *sigctxt) setlr(x uintptr)  { c.u.link = uint32(x) }
func (c *sigctxt) savelr(x uintptr) { c.u.r0 = uint32(x) }

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) set_lr(x uint64)  { c.regs().mc_gpregs.gp_lr = x }

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) set_pc(x uint64)  { c.regs().sc_elr = uintptr(x) }
func (c *sigctxt) set_sp(x uint64)  { c.regs().sc_sp = uintptr(x) }
func (c *sigctxt) set_lr(x uint64)  { c.regs().sc_lr = uintptr(x) }

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

func (c *sigctxt) set_r31(x uint64)  { c.regs().sc_regs[31] = x }
func (c *sigctxt) set_r22(x uint64)  { c.regs().sc_regs[22] = x }
func (c *sigctxt) set_pc(x uint64)   { c.regs().sc_pc = x }
func (c *sigctxt) set_sp(x uint64)   { c.regs().sc_regs[3] = x }
func (c *sigctxt) set_link(x uint64) { c.regs().sc_regs[1] = x }

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

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 }
func (c *sigctxt) set_pc(x uint64)   { c.regs().sc_pc = x }
func (c *sigctxt) set_sp(x uint64)   { c.regs().sc_regs[29] = x }
func (c *sigctxt) set_link(x uint64) { c.regs().sc_regs[31] = x }