/**
 ******************************************************************************
 * Xenia : Xbox 360 Emulator Research Project                                 *
 ******************************************************************************
 * Copyright 2013 Ben Vanik. All rights reserved.                             *
 * Released under the BSD license - see LICENSE in the root for more details. *
 ******************************************************************************
 */

#ifndef ALLOY_BACKEND_IVM_IVM_STACK_H_
#define ALLOY_BACKEND_IVM_IVM_STACK_H_

#include <alloy/core.h>

#include <alloy/backend/ivm/ivm_intcode.h>


namespace alloy {
namespace backend {
namespace ivm {


class IVMStack {
public:
  IVMStack();
  ~IVMStack();

  Register* Alloc(size_t register_count);
  void Free(size_t register_count);

private:
  class Chunk {
  public:
    Chunk(size_t chunk_size);
    ~Chunk();

    Chunk*    prev;
    Chunk*    next;

    size_t    capacity;
    uint8_t*  buffer;
    size_t    offset;
  };

private:
  size_t    chunk_size_;
  Chunk*    head_chunk_;
  Chunk*    active_chunk_;
};


}  // namespace ivm
}  // namespace backend
}  // namespace alloy


#endif  // ALLOY_BACKEND_IVM_IVM_STACK_H_