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-// Copyright 2013 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.
-
-// Declares internal implementation details for functionality in omap.h and
-// omap.cc.
-
-#ifndef COMMON_WINDOWS_OMAP_INTERNAL_H_
-#define COMMON_WINDOWS_OMAP_INTERNAL_H_
-
-#include <windows.h>
-#include <dia2.h>
-
-#include <vector>
-
-namespace google_breakpad {
-
-// The OMAP struct is defined by debughlp.h, which doesn't play nicely with
-// imagehlp.h. We simply redefine it.
-struct OMAP {
- DWORD rva;
- DWORD rvaTo;
-};
-static_assert(sizeof(OMAP) == 8, "Wrong size for OMAP structure.");
-typedef std::vector<OMAP> OmapTable;
-
-// This contains the OMAP data extracted from an image.
-struct OmapData {
- // The table of OMAP entries describing the transformation from the
- // original image to the transformed image.
- OmapTable omap_from;
- // The table of OMAP entries describing the transformation from the
- // instrumented image to the original image.
- OmapTable omap_to;
- // The length of the original untransformed image.
- DWORD length_original;
-
- OmapData() : length_original(0) { }
-};
-
-// This represents a range of addresses in an image.
-struct AddressRange {
- DWORD rva;
- DWORD length;
-
- AddressRange() : rva(0), length(0) { }
- AddressRange(DWORD rva, DWORD length) : rva(rva), length(length) { }
-
- // Returns the end address of this range.
- DWORD end() const { return rva + length; }
-
- // Addreses only compare as less-than or greater-than if they are not
- // overlapping. Otherwise, they compare equal.
- int Compare(const AddressRange& rhs) const;
- bool operator<(const AddressRange& rhs) const { return Compare(rhs) == -1; }
- bool operator>(const AddressRange& rhs) const { return Compare(rhs) == 1; }
-
- // Equality operators compare exact values.
- bool operator==(const AddressRange& rhs) const {
- return rva == rhs.rva && length == rhs.length;
- }
- bool operator!=(const AddressRange& rhs) const { return !((*this) == rhs); }
-};
-
-typedef std::vector<AddressRange> AddressRangeVector;
-
-// This represents an address range in an original image, and its corresponding
-// range in the transformed image.
-struct MappedRange {
- // An address in the original image.
- DWORD rva_original;
- // The corresponding addresses in the transformed image.
- DWORD rva_transformed;
- // The length of the address range.
- DWORD length;
- // It is possible for code to be injected into a transformed image, for which
- // there is no corresponding code in the original image. If this range of
- // transformed image is immediately followed by such injected code we maintain
- // a record of its length here.
- DWORD injected;
- // It is possible for code to be removed from the original image. This happens
- // for things like padding between blocks. There is no actual content lost,
- // but the spacing between items may be lost. This keeps track of any removed
- // content immediately following the |original| range.
- DWORD removed;
-};
-// A vector of mapped ranges is used as a more useful representation of
-// OMAP data.
-typedef std::vector<MappedRange> Mapping;
-
-// Used as a secondary search structure accompanying a Mapping.
-struct EndpointIndex {
- DWORD endpoint;
- size_t index;
-};
-typedef std::vector<EndpointIndex> EndpointIndexMap;
-
-// An ImageMap is vector of mapped ranges, plus a secondary index into it for
-// doing interval searches. (An interval tree would also work, but is overkill
-// because we don't need insertion and deletion.)
-struct ImageMap {
- // This is a description of the mapping between original and transformed
- // image, sorted by addresses in the original image.
- Mapping mapping;
- // For all interval endpoints in |mapping| this stores the minimum index of
- // an interval in |mapping| that contains the endpoint. Useful for doing
- // interval intersection queries.
- EndpointIndexMap endpoint_index_map;
-};
-
-} // namespace google_breakpad
-
-#endif // COMMON_WINDOWS_OMAP_INTERNAL_H_