diff options
Diffstat (limited to 'src/reflect/makefunc.go')
| -rw-r--r-- | src/reflect/makefunc.go | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/src/reflect/makefunc.go b/src/reflect/makefunc.go index 885966db6f..67dc4859b9 100644 --- a/src/reflect/makefunc.go +++ b/src/reflect/makefunc.go @@ -12,14 +12,15 @@ import ( // makeFuncImpl is the closure value implementing the function // returned by MakeFunc. -// The first two words of this type must be kept in sync with +// The first three words of this type must be kept in sync with // methodValue and runtime.reflectMethodValue. // Any changes should be reflected in all three. type makeFuncImpl struct { - code uintptr - stack *bitVector - typ *funcType - fn func([]Value) []Value + code uintptr + stack *bitVector // ptrmap for both args and results + argLen uintptr // just args + ftyp *funcType + fn func([]Value) []Value } // MakeFunc returns a new function of the given Type @@ -59,9 +60,9 @@ func MakeFunc(typ Type, fn func(args []Value) (results []Value)) Value { code := **(**uintptr)(unsafe.Pointer(&dummy)) // makeFuncImpl contains a stack map for use by the runtime - _, _, _, stack, _ := funcLayout(t, nil) + _, argLen, _, stack, _ := funcLayout(ftyp, nil) - impl := &makeFuncImpl{code: code, stack: stack, typ: ftyp, fn: fn} + impl := &makeFuncImpl{code: code, stack: stack, argLen: argLen, ftyp: ftyp, fn: fn} return Value{t, unsafe.Pointer(impl), flag(Func)} } @@ -73,12 +74,13 @@ func MakeFunc(typ Type, fn func(args []Value) (results []Value)) Value { // word in the passed-in argument frame. func makeFuncStub() -// The first two words of this type must be kept in sync with +// The first 3 words of this type must be kept in sync with // makeFuncImpl and runtime.reflectMethodValue. // Any changes should be reflected in all three. type methodValue struct { fn uintptr - stack *bitVector + stack *bitVector // ptrmap for both args and results + argLen uintptr // just args method int rcvr Value } @@ -101,7 +103,7 @@ func makeMethodValue(op string, v Value) Value { rcvr := Value{v.typ, v.ptr, fl} // v.Type returns the actual type of the method value. - funcType := v.Type().(*rtype) + ftyp := (*funcType)(unsafe.Pointer(v.Type().(*rtype))) // Indirect Go func value (dummy) to obtain // actual code address. (A Go func value is a pointer @@ -110,11 +112,12 @@ func makeMethodValue(op string, v Value) Value { code := **(**uintptr)(unsafe.Pointer(&dummy)) // methodValue contains a stack map for use by the runtime - _, _, _, stack, _ := funcLayout(funcType, nil) + _, argLen, _, stack, _ := funcLayout(ftyp, nil) fv := &methodValue{ fn: code, stack: stack, + argLen: argLen, method: int(v.flag) >> flagMethodShift, rcvr: rcvr, } @@ -124,7 +127,7 @@ func makeMethodValue(op string, v Value) Value { // but we want Interface() and other operations to fail early. methodReceiver(op, fv.rcvr, fv.method) - return Value{funcType, unsafe.Pointer(fv), v.flag&flagRO | flag(Func)} + return Value{&ftyp.rtype, unsafe.Pointer(fv), v.flag&flagRO | flag(Func)} } // methodValueCall is an assembly function that is the code half of |