| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COURGETTE_REL32_FINDER_H_ |
| #define COURGETTE_REL32_FINDER_H_ |
| |
| #include <stdint.h> |
| |
| #include <map> |
| #include <vector> |
| |
| #include "courgette/image_utils.h" |
| |
| namespace courgette { |
| |
| // A helper class to scan through a section of code to extract RVAs. |
| class Rel32Finder { |
| public: |
| Rel32Finder(RVA relocs_start_rva, RVA relocs_end_rva); |
| virtual ~Rel32Finder() = default; |
| |
| // Swaps data in |rel32_locations_| with |dest|. |
| void SwapRel32Locations(std::vector<RVA>* dest); |
| |
| #if COURGETTE_HISTOGRAM_TARGETS |
| // Swaps data in |rel32_target_rvas_| with |dest|. |
| void SwapRel32TargetRVAs(std::map<RVA, int>* dest); |
| #endif |
| |
| // Scans through [|start_pointer|, |end_pointer|) for rel32 addresses. Seeks |
| // RVAs that satisfy the following: |
| // - Do not overlap with |abs32_locations| (assumed sorted). |
| // - Do not overlap with [relocs_start_rva, relocs_end_rva). |
| // - Whose targets are in [|start_rva|, |end_rva|). |
| // The sorted results are written to |rel32_locations_|. |
| virtual void Find(const uint8_t* start_pointer, |
| const uint8_t* end_pointer, |
| RVA start_rva, |
| RVA end_rva, |
| const std::vector<RVA>& abs32_locations) = 0; |
| |
| protected: |
| const RVA relocs_start_rva_; |
| const RVA relocs_end_rva_; |
| |
| std::vector<RVA> rel32_locations_; |
| |
| #if COURGETTE_HISTOGRAM_TARGETS |
| std::map<RVA, int> rel32_target_rvas_; |
| #endif |
| }; |
| |
| } // namespace courgette |
| |
| #endif // COURGETTE_REL32_FINDER_H_ |