diff options
| -rw-r--r-- | disassembler.h | 112 |
1 files changed, 59 insertions, 53 deletions
diff --git a/disassembler.h b/disassembler.h index eced3cf..4f528ed 100644 --- a/disassembler.h +++ b/disassembler.h @@ -17,7 +17,65 @@ namespace zucchini { -class Disassembler; +// Disassembler needs to be declared before ReferenceGroup because the latter +// contains member pointers based on the former, and we use a compiler flag, +// -fcomplete-member-pointers, which enforces that member pointer base types are +// complete. This flag helps prevent us from running into problems in the +// Microsoft C++ ABI (see https://crbug.com/847724). + +class ReferenceGroup; + +// A Disassembler is used to encapsulate architecture specific operations, to: +// - Describe types of references found in the architecture using traits. +// - Extract references contained in an image file. +// - Correct target for some references. +class Disassembler { + public: + // Attempts to parse |image| and create an architecture-specifc Disassembler, + // as determined by DIS, which is inherited from Disassembler. Returns an + // instance of DIS if successful, and null otherwise. + template <class DIS> + static std::unique_ptr<DIS> Make(ConstBufferView image) { + auto disasm = std::make_unique<DIS>(); + if (!disasm->Parse(image)) + return nullptr; + return disasm; + } + + virtual ~Disassembler(); + + // Returns the type of executable handled by the Disassembler. + virtual ExecutableType GetExeType() const = 0; + + // Returns a more detailed description of the executable type. + virtual std::string GetExeTypeString() const = 0; + + // Creates and returns a vector that contains all groups of references. + // Groups must be aggregated by pool. + virtual std::vector<ReferenceGroup> MakeReferenceGroups() const = 0; + + ConstBufferView image() const { return image_; } + size_t size() const { return image_.size(); } + + int num_equivalence_iterations() const { return num_equivalence_iterations_; } + + protected: + explicit Disassembler(int num_equivalence_iterations); + + // Parses |image| and initializes internal states. Returns true on success. + // This must be called once and before any other operation. + virtual bool Parse(ConstBufferView image) = 0; + + // Raw image data. After Parse(), a Disassembler should shrink this to contain + // only the portion containing the executable file it recognizes. + ConstBufferView image_; + + // The number of iterations to run for equivalence map generation. This should + // roughly be the max length of reference indirection chains. + int num_equivalence_iterations_; + + DISALLOW_COPY_AND_ASSIGN(Disassembler); +}; // A ReferenceGroup is associated with a specific |type| and has convenience // methods to obtain readers and writers for that type. A ReferenceGroup does @@ -82,58 +140,6 @@ class ReferenceGroup { WriterFactory writer_factory_ = nullptr; }; -// A Disassembler is used to encapsulate architecture specific operations, to: -// - Describe types of references found in the architecture using traits. -// - Extract references contained in an image file. -// - Correct target for some references. -class Disassembler { - public: - // Attempts to parse |image| and create an architecture-specifc Disassembler, - // as determined by DIS, which is inherited from Disassembler. Returns an - // instance of DIS if successful, and null otherwise. - template <class DIS> - static std::unique_ptr<DIS> Make(ConstBufferView image) { - auto disasm = std::make_unique<DIS>(); - if (!disasm->Parse(image)) - return nullptr; - return disasm; - } - - virtual ~Disassembler(); - - // Returns the type of executable handled by the Disassembler. - virtual ExecutableType GetExeType() const = 0; - - // Returns a more detailed description of the executable type. - virtual std::string GetExeTypeString() const = 0; - - // Creates and returns a vector that contains all groups of references. - // Groups must be aggregated by pool. - virtual std::vector<ReferenceGroup> MakeReferenceGroups() const = 0; - - ConstBufferView image() const { return image_; } - size_t size() const { return image_.size(); } - - int num_equivalence_iterations() const { return num_equivalence_iterations_; } - - protected: - explicit Disassembler(int num_equivalence_iterations); - - // Parses |image| and initializes internal states. Returns true on success. - // This must be called once and before any other operation. - virtual bool Parse(ConstBufferView image) = 0; - - // Raw image data. After Parse(), a Disassembler should shrink this to contain - // only the portion containing the executable file it recognizes. - ConstBufferView image_; - - // The number of iterations to run for equivalence map generation. This should - // roughly be the max length of reference indirection chains. - int num_equivalence_iterations_; - - DISALLOW_COPY_AND_ASSIGN(Disassembler); -}; - } // namespace zucchini #endif // COMPONENTS_ZUCCHINI_DISASSEMBLER_H_ |