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+// Copyright (c) 2010 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// memory_region.h: Access to memory regions.
+//
+// A MemoryRegion provides virtual access to a range of memory.  It is an
+// abstraction allowing the actual source of memory to be independent of
+// methods which need to access a virtual memory space.
+//
+// Author: Mark Mentovai
+
+#ifndef GOOGLE_BREAKPAD_PROCESSOR_MEMORY_REGION_H__
+#define GOOGLE_BREAKPAD_PROCESSOR_MEMORY_REGION_H__
+
+
+#include "google_breakpad/common/breakpad_types.h"
+
+
+namespace google_breakpad {
+
+
+class MemoryRegion {
+ public:
+  virtual ~MemoryRegion() {}
+
+  // The base address of this memory region.
+  virtual uint64_t GetBase() const = 0;
+
+  // The size of this memory region.
+  virtual uint32_t GetSize() const = 0;
+
+  // Access to data of various sizes within the memory region.  address
+  // is a pointer to read, and it must lie within the memory region as
+  // defined by its base address and size.  The location pointed to by
+  // value is set to the value at address.  Byte-swapping is performed
+  // if necessary so that the value is appropriate for the running
+  // program.  Returns true on success.  Fails and returns false if address
+  // is out of the region's bounds (after considering the width of value),
+  // or for other types of errors.
+  virtual bool GetMemoryAtAddress(uint64_t address, uint8_t*  value) const = 0;
+  virtual bool GetMemoryAtAddress(uint64_t address, uint16_t* value) const = 0;
+  virtual bool GetMemoryAtAddress(uint64_t address, uint32_t* value) const = 0;
+  virtual bool GetMemoryAtAddress(uint64_t address, uint64_t* value) const = 0;
+
+  // Print a human-readable representation of the object to stdout.
+  virtual void Print() const = 0;
+};
+
+
+}  // namespace google_breakpad
+
+
+#endif  // GOOGLE_BREAKPAD_PROCESSOR_MEMORY_REGION_H__