// from the incoming type.
//
// If expanding is non-nil, it is the instance type currently being expanded.
// One of expanding or ctxt must be non-nil.
func (check *Checker) subst(pos syntax.Pos, typ Type, smap substMap, expanding *Named, ctxt *Context) Type {
	assert(expanding != nil || ctxt != nil)

	if smap.empty() {
		return typ
	}

	// common cases
	switch t := typ.(type) {
	case *Basic:

// from the incoming type.
//
// If expanding is non-nil, it is the instance type currently being expanded.
// One of expanding or ctxt must be non-nil.
func (check *Checker) subst(pos token.Pos, typ Type, smap substMap, expanding *Named, ctxt *Context) Type {
	assert(expanding != nil || ctxt != nil)

	if smap.empty() {
		return typ
	}

	// common cases
	switch t := typ.(type) {
	case *Basic:

		c.useAvg = false
		c.useHmul = false
	default:
		ctxt.Diag("arch %s not implemented", arch)
	}
	c.ctxt = ctxt
	c.optimize = optimize
	c.useSSE = true
	c.UseFMA = true
	c.SoftFloat = softfloat
	if softfloat {
		c.floatParamRegs = nil // no FP registers in softfloat mode
	}

	c.ABI0 = abi.NewABIConfig(0, 0, ctxt.Arch.FixedFrameSize, 0)

TEXT runtime·systemstack_switch(SB), NOSPLIT, $0-0
	UNDEF
	JALR	RA, ZERO	// make sure this function is not leaf
	RET

// func systemstack(fn func())
TEXT runtime·systemstack(SB), NOSPLIT, $0-8
	MOV	fn+0(FP), CTXT	// CTXT = fn
	MOV	g_m(g), T0	// T0 = m

	MOV	m_gsignal(T0), T1	// T1 = gsignal
	BEQ	g, T1, noswitch

	MOV	m_g0(T0), T1	// T1 = g0
	BEQ	g, T1, noswitch

	MOV	m_curg(T0), T2
	BEQ	g, T2, switch

	// uses the gojs module understands the internal Go WASM ABI directly.
	GojsModule = "gojs"
)

func instinit(ctxt *obj.Link) {
	morestack = ctxt.Lookup("runtime.morestack")
	morestackNoCtxt = ctxt.Lookup("runtime.morestack_noctxt")
	sigpanic = ctxt.LookupABI("runtime.sigpanic", obj.ABIInternal)
}

func preprocess(ctxt *obj.Link, s *obj.LSym, newprog obj.ProgAlloc) {
	appendp := func(p *obj.Prog, as obj.As, args ...obj.Addr) *obj.Prog {

	}

	prog := &obj.Prog{
		Ctxt: p.ctxt,
		As:   obj.AFUNCDATA,
		Pos:  p.pos(),
		From: valueAddr,
		To:   nameAddr,
	}
	p.append(prog, "", true)
}

// asmJump assembles a jump instruction.
// JMP	R1
// JMP	exit
// JMP	3(PC)
func (p *Parser) asmJump(op obj.As, cond string, a []obj.Addr) {
	var target *obj.Addr
	prog := &obj.Prog{
		Ctxt: p.ctxt,
		Pos:  p.pos(),
		As:   op,
	}

	Fingerprint goobj.FingerprintType // fingerprint of symbol indices, to catch index mismatch
}

func (ctxt *Link) Diag(format string, args ...interface{}) {
	ctxt.Errors++
	ctxt.DiagFunc(format, args...)
}

func (ctxt *Link) Logf(format string, args ...interface{}) {
	fmt.Fprintf(ctxt.Bso, format, args...)
	ctxt.Bso.Flush()
}

// SpillRegisterArgs emits the code to spill register args into whatever

		case syntax.Break:
			if ctxt&breakOk == 0 {
				check.error(s, MisplacedBreak, "break not in for, switch, or select statement")
			}
		case syntax.Continue:
			if ctxt&continueOk == 0 {
				check.error(s, MisplacedContinue, "continue not in for statement")
			}
		case syntax.Fallthrough:
			if ctxt&fallthroughOk == 0 {
				var msg string
				switch {
				case ctxt&finalSwitchCase != 0:

		case token.BREAK:
			if ctxt&breakOk == 0 {
				check.error(s, MisplacedBreak, "break not in for, switch, or select statement")
			}
		case token.CONTINUE:
			if ctxt&continueOk == 0 {
				check.error(s, MisplacedContinue, "continue not in for statement")
			}
		case token.FALLTHROUGH:
			if ctxt&fallthroughOk == 0 {
				var msg string
				switch {
				case ctxt&finalSwitchCase != 0:

	gp.m.winsyscall = winsyscall
}

func cgocallbackg1(fn, frame unsafe.Pointer, ctxt uintptr) {
	gp := getg()

	if gp.m.needextram || extraMWaiters.Load() > 0 {
		gp.m.needextram = false
		systemstack(newextram)
	}

	if ctxt != 0 {
		s := append(gp.cgoCtxt, ctxt)

		// Now we need to set gp.cgoCtxt = s, but we could get
		// a SIGPROF signal while manipulating the slice, and