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suyu/src/common/swap.h
Emmanuel Gil Peyrot 6b411c63c9 Common: Remove dead platform #ifdefs to make the code more readable.
Symbian, Xbox, Blackberry and iOS got removed.
FreeBSD and Android kept due to them potentially being able to run Citra in the future.
The iOS specific part also got removed from PPSSPP in order to fix a bug there.
2015-01-06 18:57:28 +00:00

530 lines
13 KiB
C++

// Copyright (c) 2012- PPSSPP Project / Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#pragma once
// Android
#if defined(ANDROID)
#include <sys/endian.h>
#if _BYTE_ORDER == _LITTLE_ENDIAN && !defined(COMMON_LITTLE_ENDIAN)
#define COMMON_LITTLE_ENDIAN 1
#elif _BYTE_ORDER == _BIG_ENDIAN && !defined(COMMON_BIG_ENDIAN)
#define COMMON_BIG_ENDIAN 1
#endif
// GCC 4.6+
#elif __GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
#if __BYTE_ORDER__ && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) && !defined(COMMON_LITTLE_ENDIAN)
#define COMMON_LITTLE_ENDIAN 1
#elif __BYTE_ORDER__ && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) && !defined(COMMON_BIG_ENDIAN)
#define COMMON_BIG_ENDIAN 1
#endif
// LLVM/clang
#elif __clang__
#if __LITTLE_ENDIAN__ && !defined(COMMON_LITTLE_ENDIAN)
#define COMMON_LITTLE_ENDIAN 1
#elif __BIG_ENDIAN__ && !defined(COMMON_BIG_ENDIAN)
#define COMMON_BIG_ENDIAN 1
#endif
// MSVC
#elif defined(_MSC_VER) && !defined(COMMON_BIG_ENDIAN) && !defined(COMMON_LITTLE_ENDIAN)
#define COMMON_LITTLE_ENDIAN 1
#endif
// Worst case, default to little endian.
#if !COMMON_BIG_ENDIAN && !COMMON_LITTLE_ENDIAN
#define COMMON_LITTLE_ENDIAN 1
#endif
template <typename T, typename F>
struct swap_struct_t {
typedef swap_struct_t<T, F> swapped_t;
protected:
T value;
static T swap(T v) {
return F::swap(v);
}
public:
T const swap() const {
return swap(value);
}
swap_struct_t() : value((T)0) {}
swap_struct_t(const T &v): value(swap(v)) {}
template <typename S>
swapped_t& operator=(const S &source) {
value = swap((T)source);
return *this;
}
operator s8() const { return (s8)swap(); }
operator u8() const { return (u8)swap(); }
operator s16() const { return (s16)swap(); }
operator u16() const { return (u16)swap(); }
operator s32() const { return (s32)swap(); }
operator u32() const { return (u32)swap(); }
operator s64() const { return (s64)swap(); }
operator u64() const { return (u64)swap(); }
operator float() const { return (float)swap(); }
operator double() const { return (double)swap(); }
// +v
swapped_t operator +() const {
return +swap();
}
// -v
swapped_t operator -() const {
return -swap();
}
// v / 5
swapped_t operator/(const swapped_t &i) const {
return swap() / i.swap();
}
template <typename S>
swapped_t operator/(const S &i) const {
return swap() / i;
}
// v * 5
swapped_t operator*(const swapped_t &i) const {
return swap() * i.swap();
}
template <typename S>
swapped_t operator*(const S &i) const {
return swap() * i;
}
// v + 5
swapped_t operator+(const swapped_t &i) const {
return swap() + i.swap();
}
template <typename S>
swapped_t operator+(const S &i) const {
return swap() + (T)i;
}
// v - 5
swapped_t operator-(const swapped_t &i) const {
return swap() - i.swap();
}
template <typename S>
swapped_t operator-(const S &i) const {
return swap() - (T)i;
}
// v += 5
swapped_t& operator+=(const swapped_t &i) {
value = swap(swap() + i.swap());
return *this;
}
template <typename S>
swapped_t& operator+=(const S &i) {
value = swap(swap() + (T)i);
return *this;
}
// v -= 5
swapped_t& operator-=(const swapped_t &i) {
value = swap(swap() - i.swap());
return *this;
}
template <typename S>
swapped_t& operator-=(const S &i) {
value = swap(swap() - (T)i);
return *this;
}
// ++v
swapped_t& operator++() {
value = swap(swap()+1);
return *this;
}
// --v
swapped_t& operator--() {
value = swap(swap()-1);
return *this;
}
// v++
swapped_t operator++(int) {
swapped_t old = *this;
value = swap(swap()+1);
return old;
}
// v--
swapped_t operator--(int) {
swapped_t old = *this;
value = swap(swap()-1);
return old;
}
// Comparaison
// v == i
bool operator==(const swapped_t &i) const {
return swap() == i.swap();
}
template <typename S>
bool operator==(const S &i) const {
return swap() == i;
}
// v != i
bool operator!=(const swapped_t &i) const {
return swap() != i.swap();
}
template <typename S>
bool operator!=(const S &i) const {
return swap() != i;
}
// v > i
bool operator>(const swapped_t &i) const {
return swap() > i.swap();
}
template <typename S>
bool operator>(const S &i) const {
return swap() > i;
}
// v < i
bool operator<(const swapped_t &i) const {
return swap() < i.swap();
}
template <typename S>
bool operator<(const S &i) const {
return swap() < i;
}
// v >= i
bool operator>=(const swapped_t &i) const {
return swap() >= i.swap();
}
template <typename S>
bool operator>=(const S &i) const {
return swap() >= i;
}
// v <= i
bool operator<=(const swapped_t &i) const {
return swap() <= i.swap();
}
template <typename S>
bool operator<=(const S &i) const {
return swap() <= i;
}
// logical
swapped_t operator !() const {
return !swap();
}
// bitmath
swapped_t operator ~() const {
return ~swap();
}
swapped_t operator &(const swapped_t &b) const {
return swap() & b.swap();
}
template <typename S>
swapped_t operator &(const S &b) const {
return swap() & b;
}
swapped_t& operator &=(const swapped_t &b) {
value = swap(swap() & b.swap());
return *this;
}
template <typename S>
swapped_t& operator &=(const S b) {
value = swap(swap() & b);
return *this;
}
swapped_t operator |(const swapped_t &b) const {
return swap() | b.swap();
}
template <typename S>
swapped_t operator |(const S &b) const {
return swap() | b;
}
swapped_t& operator |=(const swapped_t &b) {
value = swap(swap() | b.swap());
return *this;
}
template <typename S>
swapped_t& operator |=(const S &b) {
value = swap(swap() | b);
return *this;
}
swapped_t operator ^(const swapped_t &b) const {
return swap() ^ b.swap();
}
template <typename S>
swapped_t operator ^(const S &b) const {
return swap() ^ b;
}
swapped_t& operator ^=(const swapped_t &b) {
value = swap(swap() ^ b.swap());
return *this;
}
template <typename S>
swapped_t& operator ^=(const S &b) {
value = swap(swap() ^ b);
return *this;
}
template <typename S>
swapped_t operator <<(const S &b) const {
return swap() << b;
}
template <typename S>
swapped_t& operator <<=(const S &b) const {
value = swap(swap() << b);
return *this;
}
template <typename S>
swapped_t operator >>(const S &b) const {
return swap() >> b;
}
template <typename S>
swapped_t& operator >>=(const S &b) const {
value = swap(swap() >> b);
return *this;
}
// Member
/** todo **/
// Arithmetics
template <typename S, typename T2, typename F2>
friend S operator+(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend S operator-(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend S operator/(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend S operator*(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend S operator%(const S &p, const swapped_t v);
// Arithmetics + assignements
template <typename S, typename T2, typename F2>
friend S operator+=(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend S operator-=(const S &p, const swapped_t v);
// Bitmath
template <typename S, typename T2, typename F2>
friend S operator&(const S &p, const swapped_t v);
// Comparison
template <typename S, typename T2, typename F2>
friend bool operator<(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend bool operator>(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend bool operator<=(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend bool operator>=(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend bool operator!=(const S &p, const swapped_t v);
template <typename S, typename T2, typename F2>
friend bool operator==(const S &p, const swapped_t v);
};
// Arithmetics
template <typename S, typename T, typename F>
S operator+(const S &i, const swap_struct_t<T, F> v) {
return i + v.swap();
}
template <typename S, typename T, typename F>
S operator-(const S &i, const swap_struct_t<T, F> v) {
return i - v.swap();
}
template <typename S, typename T, typename F>
S operator/(const S &i, const swap_struct_t<T, F> v) {
return i / v.swap();
}
template <typename S, typename T, typename F>
S operator*(const S &i, const swap_struct_t<T, F> v) {
return i * v.swap();
}
template <typename S, typename T, typename F>
S operator%(const S &i, const swap_struct_t<T, F> v) {
return i % v.swap();
}
// Arithmetics + assignements
template <typename S, typename T, typename F>
S &operator+=(S &i, const swap_struct_t<T, F> v) {
i += v.swap();
return i;
}
template <typename S, typename T, typename F>
S &operator-=(S &i, const swap_struct_t<T, F> v) {
i -= v.swap();
return i;
}
// Logical
template <typename S, typename T, typename F>
S operator&(const S &i, const swap_struct_t<T, F> v) {
return i & v.swap();
}
template <typename S, typename T, typename F>
S operator&(const swap_struct_t<T, F> v, const S &i) {
return (S)(v.swap() & i);
}
// Comparaison
template <typename S, typename T, typename F>
bool operator<(const S &p, const swap_struct_t<T, F> v) {
return p < v.swap();
}
template <typename S, typename T, typename F>
bool operator>(const S &p, const swap_struct_t<T, F> v) {
return p > v.swap();
}
template <typename S, typename T, typename F>
bool operator<=(const S &p, const swap_struct_t<T, F> v) {
return p <= v.swap();
}
template <typename S, typename T, typename F>
bool operator>=(const S &p, const swap_struct_t<T, F> v) {
return p >= v.swap();
}
template <typename S, typename T, typename F>
bool operator!=(const S &p, const swap_struct_t<T, F> v) {
return p != v.swap();
}
template <typename S, typename T, typename F>
bool operator==(const S &p, const swap_struct_t<T, F> v) {
return p == v.swap();
}
template <typename T>
struct swap_64_t {
static T swap(T x) {
return (T)bswap64(*(u64 *)&x);
}
};
template <typename T>
struct swap_32_t {
static T swap(T x) {
return (T)bswap32(*(u32 *)&x);
}
};
template <typename T>
struct swap_16_t {
static T swap(T x) {
return (T)bswap16(*(u16 *)&x);
}
};
template <typename T>
struct swap_float_t {
static T swap(T x) {
return (T)bswapf(*(float *)&x);
}
};
template <typename T>
struct swap_double_t {
static T swap(T x) {
return (T)bswapd(*(double *)&x);
}
};
#if COMMON_LITTLE_ENDIAN
typedef u32 u32_le;
typedef u16 u16_le;
typedef u64 u64_le;
typedef s32 s32_le;
typedef s16 s16_le;
typedef s64 s64_le;
typedef float float_le;
typedef double double_le;
typedef swap_struct_t<u64, swap_64_t<u64> > u64_be;
typedef swap_struct_t<s64, swap_64_t<s64> > s64_be;
typedef swap_struct_t<u32, swap_32_t<u32> > u32_be;
typedef swap_struct_t<s32, swap_32_t<s32> > s32_be;
typedef swap_struct_t<u16, swap_16_t<u16> > u16_be;
typedef swap_struct_t<s16, swap_16_t<s16> > s16_be;
typedef swap_struct_t<float, swap_float_t<float> > float_be;
typedef swap_struct_t<double, swap_double_t<double> > double_be;
#else
typedef swap_struct_t<u64, swap_64_t<u64> > u64_le;
typedef swap_struct_t<s64, swap_64_t<s64> > s64_le;
typedef swap_struct_t<u32, swap_32_t<u32> > u32_le;
typedef swap_struct_t<s32, swap_32_t<s32> > s32_le;
typedef swap_struct_t<u16, swap_16_t<u16> > u16_le;
typedef swap_struct_t< s16, swap_16_t<s16> > s16_le;
typedef swap_struct_t<float, swap_float_t<float> > float_le;
typedef swap_struct_t<double, swap_double_t<double> > double_le;
typedef u32 u32_be;
typedef u16 u16_be;
typedef u64 u64_be;
typedef s32 s32_be;
typedef s16 s16_be;
typedef s64 s64_be;
typedef float float_be;
typedef double double_be;
#endif