/****************************************************************************
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the QtCore module of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QSIMD_P_H
#define QSIMD_P_H

#include <qglobal.h>


QT_BEGIN_HEADER


#if defined(QT_NO_MAC_XARCH) || (defined(Q_OS_DARWIN) && (defined(__ppc__) || defined(__ppc64__)))
// Disable MMX and SSE on Mac/PPC builds, or if the compiler
// does not support -Xarch argument passing
#undef QT_HAVE_SSE
#undef QT_HAVE_SSE2
#undef QT_HAVE_SSE3
#undef QT_HAVE_SSSE3
#undef QT_HAVE_SSE4_1
#undef QT_HAVE_SSE4_2
#undef QT_HAVE_AVX
#undef QT_HAVE_3DNOW
#undef QT_HAVE_MMX
#endif

// SSE intrinsics
#if defined(QT_HAVE_SSE2) && (defined(__SSE2__) || defined(Q_CC_MSVC))
#if defined(QT_LINUXBASE)
/// this is an evil hack - the posix_memalign declaration in LSB
/// is wrong - see http://bugs.linuxbase.org/show_bug.cgi?id=2431
#  define posix_memalign _lsb_hack_posix_memalign
#  include <emmintrin.h>
#  undef posix_memalign
#else
#  ifdef Q_CC_MINGW
#    include <windows.h>
#  endif
#  include <emmintrin.h>
#endif

// SSE3 intrinsics
#if defined(QT_HAVE_SSE3) && (defined(__SSE3__) || defined(Q_CC_MSVC))
#include <pmmintrin.h>
#endif

// SSSE3 intrinsics
#if defined(QT_HAVE_SSSE3) && (defined(__SSSE3__) || defined(Q_CC_MSVC))
#include <tmmintrin.h>
#endif

// SSE4.1 intrinsics
#if defined(QT_HAVE_SSE4_1) && (defined(__SSE4_1__) || defined(Q_CC_MSVC))
#include <smmintrin.h>
#endif

// SSE4.2 intrinsics
#if defined(QT_HAVE_SSE4_2) && (defined(__SSE4_2__) || defined(Q_CC_MSVC))
#include <nmmintrin.h>
#endif

// AVX intrinsics
#if defined(QT_HAVE_AVX) && (defined(__AVX__) || defined(Q_CC_MSVC))
#include <immintrin.h>
#endif


#if !defined(QT_BOOTSTRAPPED) && (!defined(Q_CC_MSVC) || (defined(_M_X64) || _M_IX86_FP == 2))
#define QT_ALWAYS_HAVE_SSE2
#endif
#endif // defined(QT_HAVE_SSE2) && (defined(__SSE2__) || defined(Q_CC_MSVC))

// NEON intrinsics
#if defined __ARM_NEON__
#define QT_ALWAYS_HAVE_NEON
#include <arm_neon.h>
#endif


// IWMMXT intrinsics
#if defined(QT_HAVE_IWMMXT)
#include <mmintrin.h>
#if defined(Q_OS_WINCE)
#  include "qplatformdefs.h"
#endif
#endif

#if defined(QT_HAVE_IWMMXT)
#if !defined(__IWMMXT__) && !defined(Q_OS_WINCE)
#  include <xmmintrin.h>
#elif defined(Q_OS_WINCE_STD) && defined(_X86_)
#  pragma warning(disable: 4391)
#  include <xmmintrin.h>
#endif
#endif

// 3D now intrinsics
#if defined(QT_HAVE_3DNOW)
#include <mm3dnow.h>
#endif

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

enum CPUFeatures {
    None        = 0,
    MMX         = 0x1,
    MMXEXT      = 0x2,
    MMX3DNOW    = 0x4,
    MMX3DNOWEXT = 0x8,
    SSE         = 0x10,
    SSE2        = 0x20,
    CMOV        = 0x40,
    IWMMXT      = 0x80,
    NEON        = 0x100,
    SSE3        = 0x200,
    SSSE3       = 0x400,
    SSE4_1      = 0x800,
    SSE4_2      = 0x1000,
    AVX         = 0x2000
};

Q_CORE_EXPORT uint qDetectCPUFeatures();


#define ALIGNMENT_PROLOGUE_16BYTES(ptr, i, length) \
    for (; i < static_cast<int>(qMin(static_cast<quintptr>(length), ((4 - ((reinterpret_cast<quintptr>(ptr) >> 2) & 0x3)) & 0x3))); ++i)

QT_END_NAMESPACE

QT_END_HEADER

#endif // QSIMD_P_H