etl/aligned_variable.h

///\file

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Embedded Template Library.

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#ifndef __ETL_ALIGNED_VARIABLE__
#define __ETL_ALIGNED_VARIABLE__

///\defgroup aligned_variable aligned_variable
/// Creates a variable of the specified type at the specified alignment.
/// \ingroup utilities

namespace etl
{
  template <typename T, const size_t ALIGNMENT>
  struct aligned_variable;

#if defined(COMPILER_MICROSOFT)
  /// Align 1
  template <typename T>
  struct aligned_variable<T, 1>
  {
    __declspec(align(1)) T value;
  };

  /// Align 2
  template <typename T>
  struct aligned_variable<T, 2>
  {
    __declspec(align(2)) T value;
  };

  /// Align 4
  template <typename T>
  struct aligned_variable<T, 4>
  {
    __declspec(align(4)) T value;
  };

  /// Align 8
  template <typename T>
  struct aligned_variable<T, 8>
  {
    __declspec(align(8)) T value;
  };

  /// Align 16
  template <typename T>
  struct aligned_variable<T, 16>
  {
    __declspec(align(16)) T value;
  };
#endif

#if defined(COMPILER_GCC)
  /// Align 1
  template <typename T>
  struct aligned_variable<T, 1>
  {
    T value __attribute__((aligned(1)));
  };

  /// Align 2
  template <typename T>
  struct aligned_variable<T, 2>
  {
    T value __attribute__((aligned(2)));
  };

  /// Align 4
  template <typename T>
  struct aligned_variable<T, 4>
  {
    T value __attribute__((aligned(4)));
  };

  /// Align 8
  template <typename T>
  struct aligned_variable<T, 8>
  {
    T value __attribute__((aligned(8)));
  };
  
  /// Align 16
  template <typename T>
  struct aligned_variable<T, 16>
  {
    T value __attribute__((aligned(16)));
  };
#endif

#if defined(COMPILER_KEIL_ARM)
  /// Align 1
  template <typename T>
  struct aligned_variable<T, 1>
  {
    __align(1) T value;
  };

  /// Align 2
  template <typename T>
  struct aligned_variable<T, 2>
  {
    __align(2) T value;
  };

  /// Align 4
  template <typename T>
  struct aligned_variable<T, 4>
  {
    __align(4) T value;
};

  /// Align 8
  template <typename T>
  struct aligned_variable<T, 8>
  {
    __align(8) T value;
  };

  /// Align 16
  template <typename T>
  struct aligned_variable<T, 16>
  {
    __align(16) T value;
  };
#endif

#if defined (COMPILER_IAR_ARM)
  /// Align 1
  template <typename T>
  struct aligned_variable<T, 1>
  {
#pragma data_alignment=1
    T value;
  };

  /// Align 2
  template <typename T>
  struct aligned_variable<T, 2>
  {
#pragma data_alignment=2 
    T value;
  };

  /// Align 4
  template <typename T>
  struct aligned_variable<T, 4>
  {
#pragma data_alignment=4 
    T value;
  };

  /// Align 8
  template <typename T>
  struct aligned_variable<T, 8>
  {
#pragma data_alignment=8
    T value;
  };

  /// Align 16
  template <typename T>
  struct aligned_variable<T, 16>
  {
#pragma data_alignment=16
    T value;
  };
#endif
}

#endif