1 files changed, 130 insertions, 0 deletions
diff --git a/libgo/go/runtime/malloc_defs.go b/libgo/go/runtime/malloc_defs.go
new file mode 100644
index 0000000000..11d6627e11
--- /dev/null
+++ b/libgo/go/runtime/malloc_defs.go
@@ -0,0 +1,130 @@
+// 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.
+
+// Go definitions of internal structures. Master is malloc.h
+
+package runtime
+
+import "unsafe"
+
+const (
+	pageShift = 12
+	pageSize  = 1 << pageShift
+	pageMask  = pageSize - 1
+)
+
+type pageID uintptr
+
+const (
+	numSizeClasses   = 67
+	maxSmallSize     = 32 << 10
+	fixAllocChunk    = 128 << 10
+	maxMCacheListLen = 256
+	maxMCacheSize    = 2 << 20
+	maxMHeapList     = 1 << 8 // 1 << (20 - pageShift)
+	heapAllocChunk   = 1 << 20
+)
+
+type mLink struct {
+	next *mLink
+}
+
+type fixAlloc struct {
+	size   uintptr
+	alloc  func(uintptr)
+	first  func(unsafe.Pointer, *byte)
+	arg    unsafe.Pointer
+	list   *mLink
+	chunk  *byte
+	nchunk uint32
+	inuse  uintptr
+	sys    uintptr
+}
+
+
+// MStats? used to be in extern.go
+
+type mCacheList struct {
+	list     *mLink
+	nlist    uint32
+	nlistmin uint32
+}
+
+type mCache struct {
+	list          [numSizeClasses]mCacheList
+	size          uint64
+	local_alloc   int64
+	local_objects int64
+	next_sample   int32
+}
+
+type mSpan struct {
+	next      *mSpan
+	prev      *mSpan
+	allnext   *mSpan
+	start     pageID
+	npages    uintptr
+	freelist  *mLink
+	ref       uint32
+	sizeclass uint32
+	state     uint32
+	//	union {
+	gcref *uint32 // sizeclass > 0
+	//		gcref0 uint32;	// sizeclass == 0
+	//	}
+}
+
+type mCentral struct {
+	// lock
+	sizeclass int32
+	nonempty  mSpan
+	empty     mSpan
+	nfree     int32
+}
+
+type mHeap struct {
+	// lock
+	free        [maxMHeapList]mSpan
+	large       mSpan
+	allspans    *mSpan
+	// map_        mHeapMap
+	min         *byte
+	max         *byte
+	closure_min *byte
+	closure_max *byte
+
+	central [numSizeClasses]struct {
+		pad [64]byte
+		// union: mCentral
+	}
+
+	spanalloc  fixAlloc
+	cachealloc fixAlloc
+}
+
+const (
+	refFree = iota
+	refStack
+	refNone
+	refSome
+	refcountOverhead = 4
+	refNoPointers    = 0x80000000
+	refHasFinalizer  = 0x40000000
+	refProfiled      = 0x20000000
+	refNoProfiling   = 0x10000000
+	refFlags         = 0xFFFF0000
+)
+
+const (
+	mProf_None = iota
+	mProf_Sample
+	mProf_All
+)
+
+type finalizer struct {
+	next *finalizer
+	fn   func(unsafe.Pointer)
+	arg  unsafe.Pointer
+	nret int32
+}