src/disassembler/InstructionReader.cxx

   1 #include "InstructionReader.hxx"
   2
   3 InstructionReader::InstructionReader(const Target& target)
   4     : _logger(log4cxx::Logger::getLogger("disassembler.Target"))
   5     , _target(target)
   6 {
   7     DisAsm.reset(_target.getTarget().createMCDisassembler(_target.getSubTargetInfo()));
   8     if (!DisAsm) {
   9         LOG4CXX_ERROR(_logger, "error: no disassembler for target " << _target.getTripleName())
  10             return;
  11     }
  12 }
  13
  14 void InstructionReader::readInstruction(std::string& data, size_t& offset, Instruction& inst) {
  15     llvm::MCInst instr;
  16     llvm::StringRefMemoryObject memoryObject(data);
  17     uint64_t size;
  18
  19     if (DisAsm->getInstruction(instr, size, memoryObject, offset,
  20                                llvm::nulls(), llvm::nulls())) {
  21
  22     } else {
  23         LOG4CXX_WARN(_logger, "warning: invalid instruction encoding");
  24         if (size == 0)
  25             size = 1; // skip illegible bytes
  26     }
  27 }