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