1 files changed, 31 insertions, 0 deletions
diff --git a/libgo/go/runtime/mheapmap64_defs.go b/libgo/go/runtime/mheapmap64_defs.go
new file mode 100644
index 00000000000..d7ba2b42001
--- /dev/null
+++ b/libgo/go/runtime/mheapmap64_defs.go
@@ -0,0 +1,31 @@
+// Copyright 2010 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.
+
+package runtime
+
+const (
+	mHeapMap_Level1Bits = 18
+	mHeapMap_Level2Bits = 18
+	mHeapMap_Level3Bits = 16
+	mHeapMap_TotalBits  = mHeapMap_Level1Bits + mHeapMap_Level2Bits + mHeapMap_Level3Bits
+
+	mHeapMap_Level1Mask = (1 << mHeapMap_Level1Bits) - 1
+	mHeapMap_Level2Mask = (1 << mHeapMap_Level2Bits) - 1
+	mHeapMap_Level3Mask = (1 << mHeapMap_Level3Bits) - 1
+)
+
+type mHeapMap struct {
+	allocator func(uintptr)
+	p         [1 << mHeapMap_Level1Bits]*mHeapMapNode2
+}
+
+
+type mHeapMapNode2 struct {
+	p [1 << mHeapMap_Level2Bits]*mHeapMapNode3
+}
+
+
+type mHeapMapNode3 struct {
+	s [1 << mHeapMap_Level3Bits]*mSpan
+}