diff --git a/libunwindstack/ElfInterface.cpp b/libunwindstack/ElfInterface.cpp
index dee8eb3..f0e4138 100644
--- a/libunwindstack/ElfInterface.cpp
+++ b/libunwindstack/ElfInterface.cpp
@@ -29,12 +29,12 @@
 #include <unwindstack/DwarfSection.h>
 #include <unwindstack/ElfInterface.h>
 #include <unwindstack/Log.h>
-#include <unwindstack/Memory.h>
 #include <unwindstack/Regs.h>
 
 #include "DwarfDebugFrame.h"
 #include "DwarfEhFrame.h"
 #include "DwarfEhFrameWithHdr.h"
+#include "MemoryBuffer.h"
 #include "Symbols.h"
 
 namespace unwindstack {
diff --git a/libunwindstack/JitDebug.cpp b/libunwindstack/JitDebug.cpp
index 20bc4b9..8a85607 100644
--- a/libunwindstack/JitDebug.cpp
+++ b/libunwindstack/JitDebug.cpp
@@ -23,7 +23,8 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/JitDebug.h>
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
+
+#include "MemoryRange.h"
 
 // This implements the JIT Compilation Interface.
 // See https://sourceware.org/gdb/onlinedocs/gdb/JIT-Interface.html
diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index d3cec06..1c0f1e6 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -27,7 +27,9 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/MapInfo.h>
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
+
+#include "MemoryFileAtOffset.h"
+#include "MemoryRange.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/Memory.cpp b/libunwindstack/Memory.cpp
index 9904fef..a66cd5b 100644
--- a/libunwindstack/Memory.cpp
+++ b/libunwindstack/Memory.cpp
@@ -32,6 +32,14 @@
 #include <unwindstack/Memory.h>
 
 #include "Check.h"
+#include "MemoryBuffer.h"
+#include "MemoryCache.h"
+#include "MemoryFileAtOffset.h"
+#include "MemoryLocal.h"
+#include "MemoryOffline.h"
+#include "MemoryOfflineBuffer.h"
+#include "MemoryRange.h"
+#include "MemoryRemote.h"
 
 namespace unwindstack {
 
@@ -168,6 +176,16 @@
   return false;
 }
 
+std::unique_ptr<Memory> Memory::CreateFileMemory(const std::string& path, uint64_t offset) {
+  auto memory = std::make_unique<MemoryFileAtOffset>();
+
+  if (memory->Init(path, offset)) {
+    return memory;
+  }
+
+  return nullptr;
+}
+
 std::shared_ptr<Memory> Memory::CreateProcessMemory(pid_t pid) {
   if (pid == getpid()) {
     return std::shared_ptr<Memory>(new MemoryLocal());
@@ -182,6 +200,11 @@
   return std::shared_ptr<Memory>(new MemoryCache(new MemoryRemote(pid)));
 }
 
+std::shared_ptr<Memory> Memory::CreateOfflineMemory(const uint8_t* data, uint64_t start,
+                                                    uint64_t end) {
+  return std::shared_ptr<Memory>(new MemoryOfflineBuffer(data, start, end));
+}
+
 size_t MemoryBuffer::Read(uint64_t addr, void* dst, size_t size) {
   if (addr >= raw_.size()) {
     return 0;
diff --git a/libunwindstack/MemoryBuffer.h b/libunwindstack/MemoryBuffer.h
new file mode 100644
index 0000000..3fe4bbb
--- /dev/null
+++ b/libunwindstack/MemoryBuffer.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_BUFFER_H
+#define _LIBUNWINDSTACK_MEMORY_BUFFER_H
+
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryBuffer : public Memory {
+ public:
+  MemoryBuffer() = default;
+  virtual ~MemoryBuffer() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  uint8_t* GetPtr(size_t offset);
+
+  void Resize(size_t size) { raw_.resize(size); }
+
+  uint64_t Size() { return raw_.size(); }
+
+ private:
+  std::vector<uint8_t> raw_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_BUFFER_H
diff --git a/libunwindstack/MemoryCache.h b/libunwindstack/MemoryCache.h
new file mode 100644
index 0000000..769d907
--- /dev/null
+++ b/libunwindstack/MemoryCache.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_CACHE_H
+#define _LIBUNWINDSTACK_MEMORY_CACHE_H
+
+#include <stdint.h>
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryCache : public Memory {
+ public:
+  MemoryCache(Memory* memory) : impl_(memory) {}
+  virtual ~MemoryCache() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  void Clear() override { cache_.clear(); }
+
+ private:
+  constexpr static size_t kCacheBits = 12;
+  constexpr static size_t kCacheMask = (1 << kCacheBits) - 1;
+  constexpr static size_t kCacheSize = 1 << kCacheBits;
+  std::unordered_map<uint64_t, uint8_t[kCacheSize]> cache_;
+
+  std::unique_ptr<Memory> impl_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_CACHE_H
diff --git a/libunwindstack/MemoryFileAtOffset.h b/libunwindstack/MemoryFileAtOffset.h
new file mode 100644
index 0000000..d136eb4
--- /dev/null
+++ b/libunwindstack/MemoryFileAtOffset.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
+#define _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
+
+#include <stdint.h>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryFileAtOffset : public Memory {
+ public:
+  MemoryFileAtOffset() = default;
+  virtual ~MemoryFileAtOffset();
+
+  bool Init(const std::string& file, uint64_t offset, uint64_t size = UINT64_MAX);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  size_t Size() { return size_; }
+
+  void Clear() override;
+
+ protected:
+  size_t size_ = 0;
+  size_t offset_ = 0;
+  uint8_t* data_ = nullptr;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_FILE_AT_OFFSET_H
diff --git a/libunwindstack/MemoryLocal.h b/libunwindstack/MemoryLocal.h
new file mode 100644
index 0000000..29aaf12
--- /dev/null
+++ b/libunwindstack/MemoryLocal.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_LOCAL_H
+#define _LIBUNWINDSTACK_MEMORY_LOCAL_H
+
+#include <stdint.h>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryLocal : public Memory {
+ public:
+  MemoryLocal() = default;
+  virtual ~MemoryLocal() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_LOCAL_H
diff --git a/libunwindstack/MemoryOffline.h b/libunwindstack/MemoryOffline.h
new file mode 100644
index 0000000..789f1a2
--- /dev/null
+++ b/libunwindstack/MemoryOffline.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_OFFLINE_H
+#define _LIBUNWINDSTACK_MEMORY_OFFLINE_H
+
+#include <stdint.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <unwindstack/Memory.h>
+
+#include "MemoryRange.h"
+
+namespace unwindstack {
+
+class MemoryOffline : public Memory {
+ public:
+  MemoryOffline() = default;
+  virtual ~MemoryOffline() = default;
+
+  bool Init(const std::string& file, uint64_t offset);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  std::unique_ptr<MemoryRange> memory_;
+};
+
+class MemoryOfflineParts : public Memory {
+ public:
+  MemoryOfflineParts() = default;
+  virtual ~MemoryOfflineParts();
+
+  void Add(MemoryOffline* memory) { memories_.push_back(memory); }
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  std::vector<MemoryOffline*> memories_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_OFFLINE_H
diff --git a/libunwindstack/MemoryOfflineBuffer.h b/libunwindstack/MemoryOfflineBuffer.h
new file mode 100644
index 0000000..64c49a1
--- /dev/null
+++ b/libunwindstack/MemoryOfflineBuffer.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_OFFLINE_BUFFER_H
+#define _LIBUNWINDSTACK_MEMORY_OFFLINE_BUFFER_H
+
+#include <stdint.h>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryOfflineBuffer : public Memory {
+ public:
+  MemoryOfflineBuffer(const uint8_t* data, uint64_t start, uint64_t end);
+  virtual ~MemoryOfflineBuffer() = default;
+
+  void Reset(const uint8_t* data, uint64_t start, uint64_t end);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  const uint8_t* data_;
+  uint64_t start_;
+  uint64_t end_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_OFFLINE_BUFFER_H
diff --git a/libunwindstack/MemoryRange.h b/libunwindstack/MemoryRange.h
new file mode 100644
index 0000000..3b4ab5c
--- /dev/null
+++ b/libunwindstack/MemoryRange.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_RANGE_H
+#define _LIBUNWINDSTACK_MEMORY_RANGE_H
+
+#include <stdint.h>
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+// MemoryRange maps one address range onto another.
+// The range [src_begin, src_begin + length) in the underlying Memory is mapped onto offset,
+// such that range.read(offset) is equivalent to underlying.read(src_begin).
+class MemoryRange : public Memory {
+ public:
+  MemoryRange(const std::shared_ptr<Memory>& memory, uint64_t begin, uint64_t length,
+              uint64_t offset);
+  virtual ~MemoryRange() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  uint64_t offset() { return offset_; }
+  uint64_t length() { return length_; }
+
+ private:
+  std::shared_ptr<Memory> memory_;
+  uint64_t begin_;
+  uint64_t length_;
+  uint64_t offset_;
+};
+
+class MemoryRanges : public Memory {
+ public:
+  MemoryRanges() = default;
+  virtual ~MemoryRanges() = default;
+
+  void Insert(MemoryRange* memory);
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+ private:
+  std::map<uint64_t, std::unique_ptr<MemoryRange>> maps_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_RANGE_H
diff --git a/libunwindstack/MemoryRemote.h b/libunwindstack/MemoryRemote.h
new file mode 100644
index 0000000..db367d6
--- /dev/null
+++ b/libunwindstack/MemoryRemote.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBUNWINDSTACK_MEMORY_REMOTE_H
+#define _LIBUNWINDSTACK_MEMORY_REMOTE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <atomic>
+
+#include <unwindstack/Memory.h>
+
+namespace unwindstack {
+
+class MemoryRemote : public Memory {
+ public:
+  MemoryRemote(pid_t pid) : pid_(pid), read_redirect_func_(0) {}
+  virtual ~MemoryRemote() = default;
+
+  size_t Read(uint64_t addr, void* dst, size_t size) override;
+
+  pid_t pid() { return pid_; }
+
+ private:
+  pid_t pid_;
+  std::atomic_uintptr_t read_redirect_func_;
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_MEMORY_REMOTE_H
diff --git a/libunwindstack/include/unwindstack/MapInfo.h b/libunwindstack/include/unwindstack/MapInfo.h
index 025fd98..13ce10f 100644
--- a/libunwindstack/include/unwindstack/MapInfo.h
+++ b/libunwindstack/include/unwindstack/MapInfo.h
@@ -25,10 +25,11 @@
 #include <string>
 
 #include <unwindstack/Elf.h>
-#include <unwindstack/Memory.h>
 
 namespace unwindstack {
 
+class MemoryFileAtOffset;
+
 struct MapInfo {
   MapInfo(MapInfo* map_info, uint64_t start, uint64_t end, uint64_t offset, uint64_t flags,
           const char* name)
diff --git a/libunwindstack/include/unwindstack/Memory.h b/libunwindstack/include/unwindstack/Memory.h
index b3beb6e..3106564 100644
--- a/libunwindstack/include/unwindstack/Memory.h
+++ b/libunwindstack/include/unwindstack/Memory.h
@@ -21,12 +21,8 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include <atomic>
-#include <map>
 #include <memory>
 #include <string>
-#include <unordered_map>
-#include <vector>
 
 namespace unwindstack {
 
@@ -37,6 +33,9 @@
 
   static std::shared_ptr<Memory> CreateProcessMemory(pid_t pid);
   static std::shared_ptr<Memory> CreateProcessMemoryCached(pid_t pid);
+  static std::shared_ptr<Memory> CreateOfflineMemory(const uint8_t* data, uint64_t start,
+                                                     uint64_t end);
+  static std::unique_ptr<Memory> CreateFileMemory(const std::string& path, uint64_t offset);
 
   virtual bool ReadString(uint64_t addr, std::string* string, uint64_t max_read = UINT64_MAX);
 
@@ -55,157 +54,6 @@
   }
 };
 
-class MemoryCache : public Memory {
- public:
-  MemoryCache(Memory* memory) : impl_(memory) {}
-  virtual ~MemoryCache() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  void Clear() override { cache_.clear(); }
-
- private:
-  constexpr static size_t kCacheBits = 12;
-  constexpr static size_t kCacheMask = (1 << kCacheBits) - 1;
-  constexpr static size_t kCacheSize = 1 << kCacheBits;
-  std::unordered_map<uint64_t, uint8_t[kCacheSize]> cache_;
-
-  std::unique_ptr<Memory> impl_;
-};
-
-class MemoryBuffer : public Memory {
- public:
-  MemoryBuffer() = default;
-  virtual ~MemoryBuffer() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  uint8_t* GetPtr(size_t offset);
-
-  void Resize(size_t size) { raw_.resize(size); }
-
-  uint64_t Size() { return raw_.size(); }
-
- private:
-  std::vector<uint8_t> raw_;
-};
-
-class MemoryFileAtOffset : public Memory {
- public:
-  MemoryFileAtOffset() = default;
-  virtual ~MemoryFileAtOffset();
-
-  bool Init(const std::string& file, uint64_t offset, uint64_t size = UINT64_MAX);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  size_t Size() { return size_; }
-
-  void Clear() override;
-
- protected:
-  size_t size_ = 0;
-  size_t offset_ = 0;
-  uint8_t* data_ = nullptr;
-};
-
-class MemoryRemote : public Memory {
- public:
-  MemoryRemote(pid_t pid) : pid_(pid), read_redirect_func_(0) {}
-  virtual ~MemoryRemote() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  pid_t pid() { return pid_; }
-
- private:
-  pid_t pid_;
-  std::atomic_uintptr_t read_redirect_func_;
-};
-
-class MemoryLocal : public Memory {
- public:
-  MemoryLocal() = default;
-  virtual ~MemoryLocal() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-};
-
-// MemoryRange maps one address range onto another.
-// The range [src_begin, src_begin + length) in the underlying Memory is mapped onto offset,
-// such that range.read(offset) is equivalent to underlying.read(src_begin).
-class MemoryRange : public Memory {
- public:
-  MemoryRange(const std::shared_ptr<Memory>& memory, uint64_t begin, uint64_t length,
-              uint64_t offset);
-  virtual ~MemoryRange() = default;
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
-  uint64_t offset() { return offset_; }
-  uint64_t length() { return length_; }
-
- private:
-  std::shared_ptr<Memory> memory_;
-  uint64_t begin_;
-  uint64_t length_;
-  uint64_t offset_;
-};
-
-class MemoryRanges : public Memory {
- public:
-  MemoryRanges() = default;
-  virtual ~MemoryRanges() = default;
-
-  void Insert(MemoryRange* memory);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  std::map<uint64_t, std::unique_ptr<MemoryRange>> maps_;
-};
-
-class MemoryOffline : public Memory {
- public:
-  MemoryOffline() = default;
-  virtual ~MemoryOffline() = default;
-
-  bool Init(const std::string& file, uint64_t offset);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  std::unique_ptr<MemoryRange> memory_;
-};
-
-class MemoryOfflineBuffer : public Memory {
- public:
-  MemoryOfflineBuffer(const uint8_t* data, uint64_t start, uint64_t end);
-  virtual ~MemoryOfflineBuffer() = default;
-
-  void Reset(const uint8_t* data, uint64_t start, uint64_t end);
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  const uint8_t* data_;
-  uint64_t start_;
-  uint64_t end_;
-};
-
-class MemoryOfflineParts : public Memory {
- public:
-  MemoryOfflineParts() = default;
-  virtual ~MemoryOfflineParts();
-
-  void Add(MemoryOffline* memory) { memories_.push_back(memory); }
-
-  size_t Read(uint64_t addr, void* dst, size_t size) override;
-
- private:
-  std::vector<MemoryOffline*> memories_;
-};
-
 }  // namespace unwindstack
 
 #endif  // _LIBUNWINDSTACK_MEMORY_H
diff --git a/libunwindstack/tests/MemoryBufferTest.cpp b/libunwindstack/tests/MemoryBufferTest.cpp
index 28e0e76..a6c12aa 100644
--- a/libunwindstack/tests/MemoryBufferTest.cpp
+++ b/libunwindstack/tests/MemoryBufferTest.cpp
@@ -18,9 +18,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "LogFake.h"
+#include "MemoryBuffer.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryCacheTest.cpp b/libunwindstack/tests/MemoryCacheTest.cpp
index a3def20..3bd3e4d 100644
--- a/libunwindstack/tests/MemoryCacheTest.cpp
+++ b/libunwindstack/tests/MemoryCacheTest.cpp
@@ -20,8 +20,7 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
+#include "MemoryCache.h"
 #include "MemoryFake.h"
 
 namespace unwindstack {
diff --git a/libunwindstack/tests/MemoryFileTest.cpp b/libunwindstack/tests/MemoryFileTest.cpp
index d7d1ace..4124a49 100644
--- a/libunwindstack/tests/MemoryFileTest.cpp
+++ b/libunwindstack/tests/MemoryFileTest.cpp
@@ -21,7 +21,7 @@
 #include <android-base/file.h>
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
+#include "MemoryFileAtOffset.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryLocalTest.cpp b/libunwindstack/tests/MemoryLocalTest.cpp
index 5a389d0..c9e5dc0 100644
--- a/libunwindstack/tests/MemoryLocalTest.cpp
+++ b/libunwindstack/tests/MemoryLocalTest.cpp
@@ -22,7 +22,7 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
+#include "MemoryLocal.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryOfflineBufferTest.cpp b/libunwindstack/tests/MemoryOfflineBufferTest.cpp
index f022884..c62c53d 100644
--- a/libunwindstack/tests/MemoryOfflineBufferTest.cpp
+++ b/libunwindstack/tests/MemoryOfflineBufferTest.cpp
@@ -18,9 +18,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "LogFake.h"
+#include "MemoryOfflineBuffer.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryOfflineTest.cpp b/libunwindstack/tests/MemoryOfflineTest.cpp
index ab9aa9d..d0c441b 100644
--- a/libunwindstack/tests/MemoryOfflineTest.cpp
+++ b/libunwindstack/tests/MemoryOfflineTest.cpp
@@ -19,7 +19,8 @@
 #include <gtest/gtest.h>
 
 #include <android-base/file.h>
-#include <unwindstack/Memory.h>
+
+#include "MemoryOffline.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryRangeTest.cpp b/libunwindstack/tests/MemoryRangeTest.cpp
index 2bac95b..2d4f141 100644
--- a/libunwindstack/tests/MemoryRangeTest.cpp
+++ b/libunwindstack/tests/MemoryRangeTest.cpp
@@ -21,9 +21,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "MemoryFake.h"
+#include "MemoryRange.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryRangesTest.cpp b/libunwindstack/tests/MemoryRangesTest.cpp
index d24fcd2..e4e9fc4 100644
--- a/libunwindstack/tests/MemoryRangesTest.cpp
+++ b/libunwindstack/tests/MemoryRangesTest.cpp
@@ -20,9 +20,8 @@
 
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
-
 #include "MemoryFake.h"
+#include "MemoryRange.h"
 
 namespace unwindstack {
 
diff --git a/libunwindstack/tests/MemoryRemoteTest.cpp b/libunwindstack/tests/MemoryRemoteTest.cpp
index fb56e8a..c90dedc 100644
--- a/libunwindstack/tests/MemoryRemoteTest.cpp
+++ b/libunwindstack/tests/MemoryRemoteTest.cpp
@@ -30,7 +30,7 @@
 #include <android-base/file.h>
 #include <gtest/gtest.h>
 
-#include <unwindstack/Memory.h>
+#include "MemoryRemote.h"
 
 #include "MemoryFake.h"
 #include "TestUtils.h"
diff --git a/libunwindstack/tests/UnwindOfflineTest.cpp b/libunwindstack/tests/UnwindOfflineTest.cpp
index 553b344..baada82 100644
--- a/libunwindstack/tests/UnwindOfflineTest.cpp
+++ b/libunwindstack/tests/UnwindOfflineTest.cpp
@@ -35,7 +35,6 @@
 #include <unwindstack/MachineX86.h>
 #include <unwindstack/MachineX86_64.h>
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
 #include <unwindstack/RegsArm.h>
 #include <unwindstack/RegsArm64.h>
 #include <unwindstack/RegsX86.h>
@@ -43,6 +42,7 @@
 #include <unwindstack/Unwinder.h>
 
 #include "ElfTestUtils.h"
+#include "MemoryOffline.h"
 #include "TestUtils.h"
 
 namespace unwindstack {
diff --git a/libunwindstack/tests/UnwindTest.cpp b/libunwindstack/tests/UnwindTest.cpp
index 4e38015..f76a101 100644
--- a/libunwindstack/tests/UnwindTest.cpp
+++ b/libunwindstack/tests/UnwindTest.cpp
@@ -35,11 +35,11 @@
 #include <android-base/threads.h>
 
 #include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
 #include <unwindstack/Regs.h>
 #include <unwindstack/RegsGetLocal.h>
 #include <unwindstack/Unwinder.h>
 
+#include "MemoryRemote.h"
 #include "TestUtils.h"
 
 namespace unwindstack {
diff --git a/libunwindstack/tools/unwind_info.cpp b/libunwindstack/tools/unwind_info.cpp
index 92e5c0a..7a6d8ba 100644
--- a/libunwindstack/tools/unwind_info.cpp
+++ b/libunwindstack/tools/unwind_info.cpp
@@ -31,6 +31,7 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/ElfInterface.h>
 #include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
 
 #include "ArmExidx.h"
 #include "ElfInterfaceArm.h"
@@ -105,14 +106,7 @@
   // Send all log messages to stdout.
   log_to_stdout(true);
 
-  MemoryFileAtOffset* memory = new MemoryFileAtOffset;
-  if (!memory->Init(file, offset)) {
-    // Initializatation failed.
-    printf("Failed to init\n");
-    return 1;
-  }
-
-  Elf elf(memory);
+  Elf elf(Memory::CreateFileMemory(file, offset).release());
   if (!elf.Init() || !elf.valid()) {
     printf("%s is not a valid elf file.\n", file);
     return 1;
diff --git a/libunwindstack/tools/unwind_reg_info.cpp b/libunwindstack/tools/unwind_reg_info.cpp
index b77a86b..d0562d9 100644
--- a/libunwindstack/tools/unwind_reg_info.cpp
+++ b/libunwindstack/tools/unwind_reg_info.cpp
@@ -33,6 +33,7 @@
 #include <unwindstack/Elf.h>
 #include <unwindstack/ElfInterface.h>
 #include <unwindstack/Log.h>
+#include <unwindstack/Memory.h>
 
 #include "ArmExidx.h"
 #include "DwarfOp.h"
@@ -165,14 +166,7 @@
 }
 
 int GetInfo(const char* file, uint64_t pc) {
-  MemoryFileAtOffset* memory = new MemoryFileAtOffset;
-  if (!memory->Init(file, 0)) {
-    // Initializatation failed.
-    printf("Failed to init\n");
-    return 1;
-  }
-
-  Elf elf(memory);
+  Elf elf(Memory::CreateFileMemory(file, pc).release());
   if (!elf.Init() || !elf.valid()) {
     printf("%s is not a valid elf file.\n", file);
     return 1;
@@ -205,7 +199,7 @@
   DwarfSection* section = interface->eh_frame();
   if (section != nullptr) {
     printf("\neh_frame:\n");
-    PrintRegInformation(section, memory, pc, elf.class_type());
+    PrintRegInformation(section, elf.memory(), pc, elf.class_type());
   } else {
     printf("\nno eh_frame information\n");
   }
@@ -213,7 +207,7 @@
   section = interface->debug_frame();
   if (section != nullptr) {
     printf("\ndebug_frame:\n");
-    PrintRegInformation(section, memory, pc, elf.class_type());
+    PrintRegInformation(section, elf.memory(), pc, elf.class_type());
     printf("\n");
   } else {
     printf("\nno debug_frame information\n");
diff --git a/libunwindstack/tools/unwind_symbols.cpp b/libunwindstack/tools/unwind_symbols.cpp
index b0a4dd0..8df2284 100644
--- a/libunwindstack/tools/unwind_symbols.cpp
+++ b/libunwindstack/tools/unwind_symbols.cpp
@@ -59,13 +59,7 @@
   // Send all log messages to stdout.
   unwindstack::log_to_stdout(true);
 
-  unwindstack::MemoryFileAtOffset* memory = new unwindstack::MemoryFileAtOffset;
-  if (!memory->Init(argv[1], 0)) {
-    printf("Failed to init\n");
-    return 1;
-  }
-
-  unwindstack::Elf elf(memory);
+  unwindstack::Elf elf(unwindstack::Memory::CreateFileMemory(argv[1], 0).release());
   if (!elf.Init() || !elf.valid()) {
     printf("%s is not a valid elf file.\n", argv[1]);
     return 1;