//
// ctxt is the "closure" generated by MakeFunc.
// frame is a pointer to the arguments to that closure on the stack.
// retValid points to a boolean which should be set when the results
// section of frame is set.
//
// regs contains the argument values passed in registers and will contain
// the values returned from ctxt.fn in registers.

	MOVV    $runtime·systemstack_switch(SB), R19
	ADDV	$8, R19
	MOVV	R19, (g_sched+gobuf_pc)(g)
	MOVV	R3, (g_sched+gobuf_sp)(g)
	MOVV	R0, (g_sched+gobuf_lr)(g)
	MOVV	R0, (g_sched+gobuf_ret)(g)
	// Assert ctxt is zero. See func save.
	MOVV	(g_sched+gobuf_ctxt)(g), R19
	BEQ	R19, 2(PC)
	JAL	runtime·abort(SB)
	RET

// func asmcgocall(fn, arg unsafe.Pointer) int32
// Call fn(arg) on the scheduler stack,

	MOVW	$runtime·systemstack_switch(SB), R1
	ADDU	$8, R1	// get past prologue
	MOVW	R1, (g_sched+gobuf_pc)(g)
	MOVW	R29, (g_sched+gobuf_sp)(g)
	MOVW	R0, (g_sched+gobuf_lr)(g)
	MOVW	R0, (g_sched+gobuf_ret)(g)
	// Assert ctxt is zero. See func save.
	MOVW	(g_sched+gobuf_ctxt)(g), R1
	BEQ	R1, 2(PC)
	JAL	runtime·abort(SB)
	RET

// func asmcgocall(fn, arg unsafe.Pointer) int32
// Call fn(arg) on the scheduler stack,

	s.hasOpenDefers = base.Flag.N == 0 && s.hasdefer && !s.curfn.OpenCodedDeferDisallowed()
	switch {
	case base.Debug.NoOpenDefer != 0:
		s.hasOpenDefers = false
	case s.hasOpenDefers && (base.Ctxt.Flag_shared || base.Ctxt.Flag_dynlink) && base.Ctxt.Arch.Name == "386":
		// Don't support open-coded defers for 386 ONLY when using shared
		// libraries, because there is extra code (added by rewriteToUseGot())

//sys	RtlLookupFunctionEntry(pc uintptr, baseAddress *uintptr, table *byte) (ret uintptr) = kernel32.RtlLookupFunctionEntry
//sys	RtlVirtualUnwind(handlerType uint32, baseAddress uintptr, pc uintptr, entry uintptr, ctxt uintptr, data *uintptr, frame *uintptr, ctxptrs *byte) (ret uintptr) = kernel32.RtlVirtualUnwind

type SERVICE_STATUS struct {
	ServiceType             uint32
	CurrentState            uint32

		// We don't have a cgo unwinder (typical case), or we do but we're not
		// in a cgo frame or we're out of cgo context.
		return 0
	}

	ctxt := u.g.ptr().cgoCtxt[u.cgoCtxt]
	u.cgoCtxt--
	cgoContextPCs(ctxt, pcBuf)
	for i, pc := range pcBuf {
		if pc == 0 {
			return i
		}
	}
	return len(pcBuf)
}

		sp  = buildReg("SP")
		sb  = buildReg("SB")
		gr  = buildReg("g")
		xer = buildReg("XER")
		// cr  = buildReg("CR")
		// ctr = buildReg("CTR")
		// lr  = buildReg("LR")
		tmp     = buildReg("R31")
		ctxt    = buildReg("R11")
		callptr = buildReg("R12")
		// tls = buildReg("R13")
		gp01        = regInfo{inputs: nil, outputs: []regMask{gp}}
		gp11        = regInfo{inputs: []regMask{gp | sp | sb}, outputs: []regMask{gp}}

	MOVQ	BX, g(CX)
	MOVQ	(g_sched+gobuf_sp)(BX), SP
	MOVQ	(g_sched+gobuf_bp)(BX), BP
	CALL	runtime·newstack(SB)
	CALL	runtime·abort(SB)	// crash if newstack returns
	RET

// morestack but not preserving ctxt.
TEXT runtime·morestack_noctxt(SB),NOSPLIT,$0
	MOVL	$0, DX
	JMP	runtime·morestack(SB)

// spillArgs stores return values from registers to a *internal/abi.RegArgs in R12.
TEXT ·spillArgs(SB),NOSPLIT,$0-0

              $context_receiver_0: GET_FIELD 'FIELD FIELD_FOR_CLASS_CONTEXT_RECEIVER name:contextReceiverField0 type:<root>.Ctx1 visibility:private [final] declared in <root>.Test' type=<root>.Ctx1 origin=null

}

type gobuf struct {
	// The offsets of sp, pc, and g are known to (hard-coded in) libmach.
	//
	// ctxt is unusual with respect to GC: it may be a
	// heap-allocated funcval, so GC needs to track it, but it
	// needs to be set and cleared from assembly, where it's
	// difficult to have write barriers. However, ctxt is really a
	// saved, live register, and we only ever exchange it between