runtime: move type kinds into a separate file

R=rsc
CC=golang-dev
https://golang.org/cl/6285047

src/pkg/runtime/iface.c

@@ -5,6 +5,7 @@
 #include "runtime.h"
 #include "arch_GOARCH.h"
 #include "type.h"
+#include "typekind.h"
 #include "malloc.h"
 
 void

src/pkg/runtime/malloc.goc

@@ -13,6 +13,7 @@ package runtime
 #include "malloc.h"
 #include "defs_GOOS_GOARCH.h"
 #include "type.h"
+#include "typekind.h"
 
 #pragma dataflag 16 /* mark mheap as 'no pointers', hiding from garbage collector */
 MHeap runtime·mheap;

src/pkg/runtime/slice.c

@@ -5,6 +5,7 @@
 #include "runtime.h"
 #include "arch_GOARCH.h"
 #include "type.h"
+#include "typekind.h"
 #include "malloc.h"
 
 static	int32	debug	= 0;

src/pkg/runtime/type.h

@@ -19,6 +19,7 @@ typedef struct IMethod IMethod;
 typedef struct SliceType SliceType;
 typedef struct FuncType FuncType;
 
+// Needs to be in sync with typekind.h/CommonSize
 struct CommonType
 {
 	uintptr size;
@@ -34,37 +35,6 @@ struct CommonType
 	Type *ptrto;
 };
 
-enum {
-	KindBool = 1,
-	KindInt,
-	KindInt8,
-	KindInt16,
-	KindInt32,
-	KindInt64,
-	KindUint,
-	KindUint8,
-	KindUint16,
-	KindUint32,
-	KindUint64,
-	KindUintptr,
-	KindFloat32,
-	KindFloat64,
-	KindComplex64,
-	KindComplex128,
-	KindArray,
-	KindChan,
-	KindFunc,
-	KindInterface,
-	KindMap,
-	KindPtr,
-	KindSlice,
-	KindString,
-	KindStruct,
-	KindUnsafePointer,
-	
-	KindNoPointers = 1<<7,
-};
-
 struct Method
 {
 	String *name;

src/pkg/runtime/typekind.h

@@ -0,0 +1,38 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+enum {
+	KindBool = 1,
+	KindInt,
+	KindInt8,
+	KindInt16,
+	KindInt32,
+	KindInt64,
+	KindUint,
+	KindUint8,
+	KindUint16,
+	KindUint32,
+	KindUint64,
+	KindUintptr,
+	KindFloat32,
+	KindFloat64,
+	KindComplex64,
+	KindComplex128,
+	KindArray,
+	KindChan,
+	KindFunc,
+	KindInterface,
+	KindMap,
+	KindPtr,
+	KindSlice,
+	KindString,
+	KindStruct,
+	KindUnsafePointer,
+
+	KindNoPointers = 1<<7,
+
+	// size of Type interface header + CommonType structure.
+	CommonSize = 2*sizeof(void*) + 6*sizeof(void*) + 8,
+};
+