src/disassembler/llvm/LLVMDisassembler.hxx

   1 #ifndef INCLUDE__LLVMDisassembler_hxx
   2 #define INCLUDE__LLVMDisassembler_hxx
   3
   4 #include <memory>
   5 #include <map>
   6 #include <log4cxx/logger.h>
   7
   8 #include "include_llvm.hxx"
   9
  10 #include "disassembler/Disassembler.hxx"
  11
  12 class Function;
  13 class BasicBlock;
  14
  15 Disassembler * createLLVMDisassembler(const std::string& filename, InformationManager* manager);
  16
  17 template <typename ELFT>
  18 class LLVMDisassembler
  19         : public Disassembler {
  20 public:
  21         LLVMDisassembler(const std::string& filename, InformationManager* manager,
  22                          llvm::object::ELFObjectFile<ELFT>* file = NULL);
  23         virtual ~LLVMDisassembler();
  24
  25         void start();
  26         void getSymbols() {}
  27         uint64_t entryAddress() {return _entryAddress;}
  28
  29         void forEachFunction(std::function<void (uint64_t, Function*)> callback);
  30         void printEachInstruction(uint64_t start, uint64_t end,
  31                                   std::function<void (uint8_t*, size_t, const std::string&,
  32                                                       const std::string&)> fun);
  33
  34         BasicBlock * getBasicBlock(uint64_t address) {
  35                 return blocks[address];
  36         }
  37
  38         Function * disassembleFunctionAt(uint64_t address, const std::string& name = "");
  39
  40 protected:
  41         bool isFunctionCall(uint64_t address) {return false;}
  42         bool isJump(uint64_t address) {return false;}
  43
  44 private:
  45         typedef llvm::object::ELFFile<ELFT> ELFO;
  46
  47         // http://llvm.org/docs/doxygen/html/MCObjectDisassembler_8cpp_source.html +197
  48         void disassembleFunction(Function* function);
  49         void splitBlocks(Function* fun);
  50         void disassemble();
  51
  52         void readSymbols();
  53         void readSections();
  54         void readDynamicSymbols();
  55
  56         log4cxx::LoggerPtr logger;
  57         std::map<uint64_t, BasicBlock*> blocks;
  58         std::map<uint64_t, Function*> functions;
  59
  60         llvm::Triple triple;
  61         std::shared_ptr<llvm::object::Binary> binary;
  62
  63         const llvm::Target * target;
  64         llvm::object::ELFObjectFile<ELFT> * o;
  65
  66         std::unique_ptr<const llvm::MCRegisterInfo> MRI;
  67         std::unique_ptr<const llvm::MCAsmInfo> AsmInfo;
  68         std::unique_ptr<llvm::MCModule> Mod;
  69         std::unique_ptr<llvm::MCInstPrinter> IP;
  70         std::unique_ptr<llvm::MCDisassembler> DisAsm;
  71         std::unique_ptr<const llvm::MCObjectFileInfo> MOFI;
  72         std::unique_ptr<llvm::MCContext> Ctx;
  73         std::unique_ptr<const llvm::MCInstrAnalysis> MIA;
  74         std::unique_ptr<const llvm::MCSubtargetInfo> STI;
  75         std::unique_ptr<const llvm::MCInstrInfo> MII;
  76         std::unique_ptr<llvm::MCRelocationInfo> RelInfo;
  77         std::unique_ptr<llvm::MCSymbolizer> Symzer;
  78
  79         std::map<std::string, llvm::object::SectionRef> sections;
  80         std::map<std::string, llvm::object::SymbolRef> symbols;
  81         InformationManager * manager;
  82         uint64_t _entryAddress;
  83 };
  84
  85 #endif