예제 #1
0
파일: builtin.go 프로젝트: NickDaison/e8vm
func declareBuiltin(b *builder, builtin *link8.Pkg) {
	path := builtin.Path()
	e := b.p.HookBuiltin(builtin)
	if e != nil {
		b.Errorf(nil, e.Error())
		return
	}

	o := func(name, as string, t *types.Func) ir.Ref {
		sym := builtin.SymbolByName(name)
		if sym == nil {
			b.Errorf(nil, "builtin symbol %s missing", name)
			return nil
		} else if sym.Type != link8.SymFunc {
			b.Errorf(nil, "builtin symbol %s is not a function", name)
			return nil
		}

		ref := ir.NewFuncSym(path, name, makeFuncSig(t))
		obj := &objFunc{name: as, ref: newRef(t, ref)}
		s := sym8.Make(b.path, as, tast.SymFunc, obj, t, nil)
		pre := b.scope.Declare(s)
		if pre != nil {
			b.Errorf(nil, "builtin symbol %s declare failed", name)
			return nil
		}
		return ref
	}

	// TODO: export these as generic function pointer symbols, and convert
	// them into G functions in g files, rather than inside here in the
	// compiler.
	o("PrintInt32", "printInt", types.NewVoidFunc(types.Int))
	o("PrintUint32", "printUint", types.NewVoidFunc(types.Uint))
	o("PrintChar", "printChar", types.NewVoidFunc(types.Int8))
	b.panicFunc = o("Panic", "panic", types.VoidFunc)

	bi := func(name string) {
		t := types.NewBuiltInFunc(name)
		obj := &objFunc{name: name, ref: newRef(t, nil)}
		s := sym8.Make(b.path, name, tast.SymFunc, obj, t, nil)
		pre := b.scope.Declare(s)
		if pre != nil {
			b.Errorf(nil, "builtin symbol %s declare failed", name)
		}
	}

	bi("len")
	bi("make")

	c := func(name string, r *ref) {
		// TODO: declare these as typed consts
		obj := &objConst{name, r}
		s := sym8.Make(b.path, name, tast.SymConst, obj, r.Type(), nil)
		pre := b.scope.Declare(s)
		if pre != nil {
			b.Errorf(nil, "builtin symbol %s declare failed", name)
		}
	}

	c("true", refTrue)
	c("false", refFalse)
	c("nil", refNil)

	t := func(name string, t types.T) {
		s := sym8.Make(b.path, name, tast.SymType, nil, &types.Type{t}, nil)
		pre := b.scope.Declare(s)
		if pre != nil {
			b.Errorf(nil, "builtin symbol %s declare failed", name)
		}
	}

	t("int", types.Int)
	t("uint", types.Uint)
	t("int32", types.Int)
	t("uint32", types.Uint)
	t("int8", types.Int8)
	t("uint8", types.Uint8)
	t("char", types.Int8)
	t("byte", types.Uint8)
	t("bool", types.Bool)
	t("float", types.Float32)
	t("string", types.String)
	// t("ptr", &types.Pointer{types.Uint8})
	// t("float32", types.Float32)
	// t("string", types.String)
}
예제 #2
0
func wrapFunc(b *builder, name, wrapName string) {
	f := findFunc(b, name, types.VoidFunc)
	if f == nil {
		return
	}

	b.f = b.p.NewFunc(wrapName, nil, ir.VoidFuncSig)
	b.b = b.f.NewBlock(nil)
	b.b.Call(nil, f.IR())
}

func addStart(b *builder) { wrapFunc(b, "main", startName) }

func addInit(b *builder) { wrapFunc(b, "init", initName) }

var testMainFuncType = types.NewVoidFunc(types.VoidFunc)

func addTestStart(b *builder, testList ir.Ref, n int) {
	b.f = b.p.NewFunc(testStartName, nil, ir.VoidFuncSig)
	b.b = b.f.NewBlock(nil)

	argAddr := ir.Num(arch8.AddrBootArg) // the arg
	index := b.newTempIR(types.Uint)     // to save the index
	b.b.Assign(index, ir.NewAddrRef(argAddr, arch8.RegSize, 0, false, true))

	size := ir.Num(uint32(n))
	checkInRange(b, index, size, "u<")

	base := b.newPtr()
	b.b.Arith(base, nil, "&", testList)
	addr := b.newPtr()