Method OnModuleInstrumented

3rdParty/tinydbr/windows/winunwind.cpp:122–195

}

void WinUnwindGenerator::OnModuleInstrumented(ModuleInfo* module) {
  if (tinydbr_.child_ptr_size == 4) {
    FATAL("-generate_unwind is unneeded (and thus incompatible) with 32-bit targets");
  }

  WinUnwindData* unwind_data = new WinUnwindData;
  module->unwind_data = unwind_data;

  // read the entire image
  // TODO (ifratric) can this fail for some modules?
  size_t image_size = module->max_address - module->min_address;
  BYTE* modulebuf = (BYTE*)malloc(image_size);
  tinydbr_.RemoteRead((void *)module->min_address, modulebuf, image_size);

  DWORD exception_table_offset;
  DWORD exception_table_size;
  if (!GetExceptionTableOffsetAndSize((char*)modulebuf,
									  (uint32_t*)&exception_table_offset,
									  (uint32_t*)&exception_table_size))
  {
	  FATAL("Error getting exception table");
  }
  if ((size_t)exception_table_offset + exception_table_size > image_size) {
    FATAL("Exception table out of bounds");
  }
  if (exception_table_size % (3 * sizeof(DWORD))) {
    FATAL("Incorrect exception table format?");
  }

  DWORD* exception_table = (DWORD*)(modulebuf + exception_table_offset);
  DWORD* exception_table_end = (DWORD*)(modulebuf + exception_table_offset + exception_table_size);

  DWORD function_start;
  DWORD function_end;
  DWORD unwind_info_offset;

  while (exception_table < exception_table_end) {
    size_t function_info_addr = module->min_address + ((BYTE *)exception_table - modulebuf);

    function_start = *exception_table; exception_table++;
    function_end = *exception_table; exception_table++;
    unwind_info_offset = *exception_table; exception_table++;

    if (function_start >= function_end) continue;

    UnwindInfo* unwind_info = ReadUnwindInfo(module, modulebuf, image_size, unwind_info_offset);

    FunctionInfo *new_info = new FunctionInfo;

    new_info->function_start = module->min_address + function_start;
    new_info->function_end = module->min_address + function_end;

    new_info->function_info_addr = function_info_addr;

    new_info->unwind_info = unwind_info;

    unwind_data->original_function_infos.push_back(new_info);
  }