Ejemplos de MemoryWriter::seek en C++ (Cpp)

Ejemplo n.º 1

void JITCompiler32 :: allocateVMT(MemoryWriter& vmtWriter, size_t flags, size_t vmtLength)
{
   alignCode(&vmtWriter, VA_ALIGNMENT, false);   

   // create VMT header:
   //   dummy package reference
   vmtWriter.writeDWord(0);

   //   vmt length
   vmtWriter.writeDWord(vmtLength);

   //   vmt flags
   vmtWriter.writeDWord(flags);

   //   dummy class reference
   vmtWriter.writeDWord(0);

   int position = vmtWriter.Position();

   size_t vmtSize = 0;
   if (test(flags, elStandartVMT)) {
      // + VMT length
      vmtSize = vmtLength * sizeof(VMTEntry);
   }

   vmtWriter.writeBytes(0, vmtSize);

   vmtWriter.seek(position);
}

Ejemplo n.º 2

void JITCompiler32 :: fixVMT(MemoryWriter& vmtWriter, void* classClassVAddress, void* packageVAddress, int count, bool virtualMode)
{
   _Memory* image = vmtWriter.Memory();   

   // update class package reference if available
   if (packageVAddress != NULL) {
      int position = vmtWriter.Position();
      vmtWriter.seek(position - 0x10);

      if (virtualMode) {
         vmtWriter.writeRef((ref_t)packageVAddress, 0);
      }
      else vmtWriter.writeDWord((int)packageVAddress);

      vmtWriter.seek(position);
   }

   // update class vmt reference if available
   if (classClassVAddress != NULL) {
      vmtWriter.seek(vmtWriter.Position() - 4);

      if (virtualMode) {                                  
         vmtWriter.writeRef((ref_t)classClassVAddress, 0);
      }
      else vmtWriter.writeDWord((int)classClassVAddress);
   }

   // if in virtual mode mark method addresses as reference
   if (virtualMode) {
      ref_t entryPosition = vmtWriter.Position();
      for (int i = 0 ; i < count ; i++) {
         image->addReference(mskCodeRef, entryPosition + 4);
      
         entryPosition += 8;
      }
   }
}