// compare linknamed symbol definitions happier.
//
//go:linkname newTimer
func newTimer(when, period int64, f func(any, uintptr, int64), arg any, cp unsafe.Pointer) *Timer

//go:linkname stopTimer
func stopTimer(*Timer) bool

//go:linkname resetTimer
func resetTimer(t *Timer, when, period int64) bool

// Note: The runtime knows the layout of struct Timer, since newTimer allocates it.

}

// writeFuncs writes the func structures and pcdata to runtime.functab.
func writeFuncs(ctxt *Link, sb *loader.SymbolBuilder, funcs []loader.Sym, inlSyms map[loader.Sym]loader.Sym, startLocations, cuOffsets []uint32, nameOffsets map[loader.Sym]uint32) {
	ldr := ctxt.loader
	deferReturnSym := ldr.Lookup("runtime.deferreturn", abiInternalVer)
	gofunc := ldr.Lookup("go:func.*", 0)
	gofuncBase := ldr.SymValue(gofunc)

}

func (f *Func) raw() *_func {
	return (*_func)(unsafe.Pointer(f))
}

func (f *Func) funcInfo() funcInfo {
	return f.raw().funcInfo()
}

func (f *_func) funcInfo() funcInfo {
	// Find the module containing fn. fn is located in the pclntable.
	// The unsafe.Pointer to uintptr conversions and arithmetic
	// are safe because we are working with module addresses.

	// stackObjectRecord.gcdata() will work correctly with it.
	ptr := uintptr(unsafe.Pointer(&methodValueCallFrameObjs[0]))
	var mod *moduledata
	for datap := &firstmoduledata; datap != nil; datap = datap.next {
		if datap.gofunc <= ptr && ptr < datap.end {
			mod = datap
			break
		}
	}
	if mod == nil {
		throw("methodValueCallFrameObjs is not in a module")
	}
	methodValueCallFrameObjs[0] = stackObjectRecord{

	// that index's table. e.g.,
	// &moduledata.pctab[_func.pcdata[_PCDATA_UnsafePoint]] is the start of
	// the unsafe point table.
	//
	// An offset of 0 indicates that there is no table.
	//
	// pcdata [npcdata]uint32

	// funcdata contains the offset past moduledata.gofunc which contains a
	// pointer to that index's funcdata. e.g.,
	// *(moduledata.gofunc +  _func.funcdata[_FUNCDATA_ArgsPointerMaps]) is

	gcdataoff uint32 // offset to gcdata from moduledata.rodata
}

func (r *stackObjectRecord) useGCProg() bool {
	return r._ptrdata < 0
}

func (r *stackObjectRecord) ptrdata() uintptr {
	x := r._ptrdata
	if x < 0 {
		return uintptr(-x)
	}
	return uintptr(x)
}

// gcdata returns pointer map or GC prog of the type.
func (r *stackObjectRecord) gcdata() *byte {
	ptr := uintptr(unsafe.Pointer(r))

var ReadOnly = []SymKind{
	STYPE,
	SSTRING,
	SGOSTRING,
	SGOFUNC,
	SGCBITS,
	SRODATA,
	SFUNCTAB,
}

// RelROMap describes the transformation of read-only symbols to rel-ro
// symbols.
var RelROMap = map[SymKind]SymKind{
	STYPE:     STYPERELRO,
	SSTRING:   SSTRINGRELRO,
	SGOSTRING: SGOSTRINGRELRO,
	SGOFUNC:   SGOFUNCRELRO,
	SGCBITS:   SGCBITSRELRO,
	SRODATA:   SRODATARELRO,

	fn.SetTypecheck(1)

	name.Func = fn

	return fn
}

func (f *Func) isStmt() {}

func (n *Func) copy() Node                                  { panic(n.no("copy")) }
func (n *Func) doChildren(do func(Node) bool) bool          { return doNodes(n.Body, do) }
func (n *Func) editChildren(edit func(Node) Node)           { editNodes(n.Body, edit) }

//
// commaerr   <expr> (<untyped kind> <mode>                    )
// commaerr   <expr> (               <mode>       of type <typ>)
//
// cgofunc    <expr> (<untyped kind> <mode>                    )
// cgofunc    <expr> (               <mode>       of type <typ>)
func operandString(x *operand, qf Qualifier) string {
	// special-case nil
	if isTypes2 {
		if x.mode == nilvalue {
			switch x.typ {

// Returns true iff the function's symbol is public.
bool IsPublicFuncOp(func::FuncOp func_op) {
  return SymbolTable::getSymbolVisibility(&*func_op) ==
         SymbolTable::Visibility::Public;
}

}  // namespace

func::FuncOp FindMainFuncOp(ModuleOp module_op) {
  if (const auto main_func_op = module_op.lookupSymbol<func::FuncOp>(
          kImportModelDefaultGraphFuncName);