mirror of
https://github.com/Lime3DS/Lime3DS.git
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618 lines
16 KiB
C++
618 lines
16 KiB
C++
// Copyright (c) 2012- PPSSPP Project / Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#if defined(_MSC_VER)
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#include <cstdlib>
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#elif defined(__linux__)
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#include <byteswap.h>
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#elif defined(__FreeBSD__)
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#include <sys/endian.h>
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#endif
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#include "common/common_types.h"
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// GCC 4.6+
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#if __GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
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#if __BYTE_ORDER__ && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) && !defined(COMMON_LITTLE_ENDIAN)
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#define COMMON_LITTLE_ENDIAN 1
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#elif __BYTE_ORDER__ && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) && !defined(COMMON_BIG_ENDIAN)
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#define COMMON_BIG_ENDIAN 1
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#endif
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// LLVM/clang
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#elif __clang__
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#if __LITTLE_ENDIAN__ && !defined(COMMON_LITTLE_ENDIAN)
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#define COMMON_LITTLE_ENDIAN 1
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#elif __BIG_ENDIAN__ && !defined(COMMON_BIG_ENDIAN)
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#define COMMON_BIG_ENDIAN 1
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#endif
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// MSVC
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#elif defined(_MSC_VER) && !defined(COMMON_BIG_ENDIAN) && !defined(COMMON_LITTLE_ENDIAN)
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#define COMMON_LITTLE_ENDIAN 1
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#endif
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// Worst case, default to little endian.
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#if !COMMON_BIG_ENDIAN && !COMMON_LITTLE_ENDIAN
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#define COMMON_LITTLE_ENDIAN 1
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#endif
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namespace Common {
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inline u8 swap8(u8 _data) {return _data;}
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inline u32 swap24(const u8* _data) {return (_data[0] << 16) | (_data[1] << 8) | _data[2];}
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#ifdef _MSC_VER
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inline u16 swap16(u16 _data) {return _byteswap_ushort(_data);}
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inline u32 swap32(u32 _data) {return _byteswap_ulong (_data);}
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inline u64 swap64(u64 _data) {return _byteswap_uint64(_data);}
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#elif _M_ARM
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inline u16 swap16 (u16 _data) { u32 data = _data; __asm__ ("rev16 %0, %1\n" : "=l" (data) : "l" (data)); return (u16)data;}
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inline u32 swap32 (u32 _data) {__asm__ ("rev %0, %1\n" : "=l" (_data) : "l" (_data)); return _data;}
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inline u64 swap64(u64 _data) {return ((u64)swap32(_data) << 32) | swap32(_data >> 32);}
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#elif __linux__
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inline u16 swap16(u16 _data) {return bswap_16(_data);}
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inline u32 swap32(u32 _data) {return bswap_32(_data);}
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inline u64 swap64(u64 _data) {return bswap_64(_data);}
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#elif __APPLE__
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inline __attribute__((always_inline)) u16 swap16(u16 _data)
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{return (_data >> 8) | (_data << 8);}
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inline __attribute__((always_inline)) u32 swap32(u32 _data)
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{return __builtin_bswap32(_data);}
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inline __attribute__((always_inline)) u64 swap64(u64 _data)
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{return __builtin_bswap64(_data);}
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#elif __FreeBSD__
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inline u16 swap16(u16 _data) {return bswap16(_data);}
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inline u32 swap32(u32 _data) {return bswap32(_data);}
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inline u64 swap64(u64 _data) {return bswap64(_data);}
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#else
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// Slow generic implementation.
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inline u16 swap16(u16 data) {return (data >> 8) | (data << 8);}
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inline u32 swap32(u32 data) {return (swap16(data) << 16) | swap16(data >> 16);}
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inline u64 swap64(u64 data) {return ((u64)swap32(data) << 32) | swap32(data >> 32);}
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#endif
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inline float swapf(float f) {
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union {
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float f;
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unsigned int u32;
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} dat1, dat2;
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dat1.f = f;
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dat2.u32 = swap32(dat1.u32);
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return dat2.f;
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}
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inline double swapd(double f) {
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union {
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double f;
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unsigned long long u64;
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} dat1, dat2;
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dat1.f = f;
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dat2.u64 = swap64(dat1.u64);
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return dat2.f;
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}
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inline u16 swap16(const u8* _pData) {return swap16(*(const u16*)_pData);}
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inline u32 swap32(const u8* _pData) {return swap32(*(const u32*)_pData);}
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inline u64 swap64(const u8* _pData) {return swap64(*(const u64*)_pData);}
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template <int count>
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void swap(u8*);
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template <>
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inline void swap<1>(u8* data) { }
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template <>
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inline void swap<2>(u8* data) {
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*reinterpret_cast<u16*>(data) = swap16(data);
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}
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template <>
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inline void swap<4>(u8* data) {
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*reinterpret_cast<u32*>(data) = swap32(data);
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}
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template <>
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inline void swap<8>(u8* data) {
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*reinterpret_cast<u64*>(data) = swap64(data);
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}
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} // Namespace Common
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template <typename T, typename F>
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struct swap_struct_t {
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typedef swap_struct_t<T, F> swapped_t;
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protected:
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T value;
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static T swap(T v) {
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return F::swap(v);
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}
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public:
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T const swap() const {
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return swap(value);
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}
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swap_struct_t() : value((T)0) {}
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swap_struct_t(const T &v): value(swap(v)) {}
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template <typename S>
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swapped_t& operator=(const S &source) {
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value = swap((T)source);
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return *this;
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}
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operator s8() const { return (s8)swap(); }
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operator u8() const { return (u8)swap(); }
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operator s16() const { return (s16)swap(); }
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operator u16() const { return (u16)swap(); }
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operator s32() const { return (s32)swap(); }
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operator u32() const { return (u32)swap(); }
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operator s64() const { return (s64)swap(); }
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operator u64() const { return (u64)swap(); }
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operator float() const { return (float)swap(); }
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operator double() const { return (double)swap(); }
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// +v
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swapped_t operator +() const {
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return +swap();
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}
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// -v
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swapped_t operator -() const {
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return -swap();
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}
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// v / 5
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swapped_t operator/(const swapped_t &i) const {
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return swap() / i.swap();
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}
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template <typename S>
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swapped_t operator/(const S &i) const {
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return swap() / i;
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}
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// v * 5
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swapped_t operator*(const swapped_t &i) const {
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return swap() * i.swap();
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}
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template <typename S>
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swapped_t operator*(const S &i) const {
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return swap() * i;
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}
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// v + 5
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swapped_t operator+(const swapped_t &i) const {
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return swap() + i.swap();
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}
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template <typename S>
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swapped_t operator+(const S &i) const {
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return swap() + (T)i;
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}
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// v - 5
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swapped_t operator-(const swapped_t &i) const {
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return swap() - i.swap();
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}
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template <typename S>
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swapped_t operator-(const S &i) const {
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return swap() - (T)i;
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}
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// v += 5
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swapped_t& operator+=(const swapped_t &i) {
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value = swap(swap() + i.swap());
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return *this;
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}
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template <typename S>
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swapped_t& operator+=(const S &i) {
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value = swap(swap() + (T)i);
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return *this;
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}
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// v -= 5
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swapped_t& operator-=(const swapped_t &i) {
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value = swap(swap() - i.swap());
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return *this;
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}
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template <typename S>
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swapped_t& operator-=(const S &i) {
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value = swap(swap() - (T)i);
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return *this;
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}
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// ++v
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swapped_t& operator++() {
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value = swap(swap()+1);
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return *this;
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}
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// --v
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swapped_t& operator--() {
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value = swap(swap()-1);
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return *this;
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}
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// v++
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swapped_t operator++(int) {
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swapped_t old = *this;
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value = swap(swap()+1);
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return old;
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}
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// v--
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swapped_t operator--(int) {
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swapped_t old = *this;
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value = swap(swap()-1);
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return old;
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}
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// Comparaison
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// v == i
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bool operator==(const swapped_t &i) const {
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return swap() == i.swap();
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}
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template <typename S>
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bool operator==(const S &i) const {
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return swap() == i;
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}
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// v != i
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bool operator!=(const swapped_t &i) const {
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return swap() != i.swap();
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}
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template <typename S>
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bool operator!=(const S &i) const {
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return swap() != i;
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}
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// v > i
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bool operator>(const swapped_t &i) const {
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return swap() > i.swap();
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}
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template <typename S>
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bool operator>(const S &i) const {
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return swap() > i;
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}
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// v < i
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bool operator<(const swapped_t &i) const {
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return swap() < i.swap();
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}
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template <typename S>
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bool operator<(const S &i) const {
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return swap() < i;
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}
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// v >= i
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bool operator>=(const swapped_t &i) const {
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return swap() >= i.swap();
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}
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template <typename S>
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bool operator>=(const S &i) const {
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return swap() >= i;
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}
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// v <= i
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bool operator<=(const swapped_t &i) const {
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return swap() <= i.swap();
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}
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template <typename S>
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bool operator<=(const S &i) const {
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return swap() <= i;
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}
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// logical
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swapped_t operator !() const {
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return !swap();
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}
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// bitmath
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swapped_t operator ~() const {
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return ~swap();
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}
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swapped_t operator &(const swapped_t &b) const {
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return swap() & b.swap();
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}
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template <typename S>
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swapped_t operator &(const S &b) const {
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return swap() & b;
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}
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swapped_t& operator &=(const swapped_t &b) {
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value = swap(swap() & b.swap());
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return *this;
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}
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template <typename S>
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swapped_t& operator &=(const S b) {
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value = swap(swap() & b);
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return *this;
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}
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swapped_t operator |(const swapped_t &b) const {
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return swap() | b.swap();
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}
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template <typename S>
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swapped_t operator |(const S &b) const {
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return swap() | b;
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}
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swapped_t& operator |=(const swapped_t &b) {
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value = swap(swap() | b.swap());
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return *this;
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}
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template <typename S>
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swapped_t& operator |=(const S &b) {
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value = swap(swap() | b);
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return *this;
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}
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swapped_t operator ^(const swapped_t &b) const {
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return swap() ^ b.swap();
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}
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template <typename S>
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swapped_t operator ^(const S &b) const {
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return swap() ^ b;
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}
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swapped_t& operator ^=(const swapped_t &b) {
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value = swap(swap() ^ b.swap());
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return *this;
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}
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template <typename S>
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swapped_t& operator ^=(const S &b) {
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value = swap(swap() ^ b);
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return *this;
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}
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template <typename S>
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swapped_t operator <<(const S &b) const {
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return swap() << b;
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}
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template <typename S>
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swapped_t& operator <<=(const S &b) const {
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value = swap(swap() << b);
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return *this;
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}
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template <typename S>
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swapped_t operator >>(const S &b) const {
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return swap() >> b;
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}
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template <typename S>
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swapped_t& operator >>=(const S &b) const {
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value = swap(swap() >> b);
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return *this;
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}
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// Member
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/** todo **/
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// Arithmetics
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template <typename S, typename T2, typename F2>
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friend S operator+(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend S operator-(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend S operator/(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend S operator*(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend S operator%(const S &p, const swapped_t v);
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// Arithmetics + assignements
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template <typename S, typename T2, typename F2>
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friend S operator+=(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend S operator-=(const S &p, const swapped_t v);
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// Bitmath
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template <typename S, typename T2, typename F2>
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friend S operator&(const S &p, const swapped_t v);
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// Comparison
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template <typename S, typename T2, typename F2>
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friend bool operator<(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend bool operator>(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend bool operator<=(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend bool operator>=(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend bool operator!=(const S &p, const swapped_t v);
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template <typename S, typename T2, typename F2>
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friend bool operator==(const S &p, const swapped_t v);
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};
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// Arithmetics
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template <typename S, typename T, typename F>
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S operator+(const S &i, const swap_struct_t<T, F> v) {
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return i + v.swap();
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}
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template <typename S, typename T, typename F>
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S operator-(const S &i, const swap_struct_t<T, F> v) {
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return i - v.swap();
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}
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template <typename S, typename T, typename F>
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S operator/(const S &i, const swap_struct_t<T, F> v) {
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return i / v.swap();
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}
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template <typename S, typename T, typename F>
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S operator*(const S &i, const swap_struct_t<T, F> v) {
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return i * v.swap();
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}
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template <typename S, typename T, typename F>
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S operator%(const S &i, const swap_struct_t<T, F> v) {
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return i % v.swap();
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}
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// Arithmetics + assignements
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template <typename S, typename T, typename F>
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S &operator+=(S &i, const swap_struct_t<T, F> v) {
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i += v.swap();
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return i;
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}
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template <typename S, typename T, typename F>
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S &operator-=(S &i, const swap_struct_t<T, F> v) {
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i -= v.swap();
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return i;
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}
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// Logical
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template <typename S, typename T, typename F>
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S operator&(const S &i, const swap_struct_t<T, F> v) {
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return i & v.swap();
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}
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template <typename S, typename T, typename F>
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S operator&(const swap_struct_t<T, F> v, const S &i) {
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return (S)(v.swap() & i);
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}
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// Comparaison
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template <typename S, typename T, typename F>
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bool operator<(const S &p, const swap_struct_t<T, F> v) {
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return p < v.swap();
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}
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template <typename S, typename T, typename F>
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bool operator>(const S &p, const swap_struct_t<T, F> v) {
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return p > v.swap();
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}
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template <typename S, typename T, typename F>
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bool operator<=(const S &p, const swap_struct_t<T, F> v) {
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return p <= v.swap();
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}
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template <typename S, typename T, typename F>
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bool operator>=(const S &p, const swap_struct_t<T, F> v) {
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return p >= v.swap();
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}
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template <typename S, typename T, typename F>
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bool operator!=(const S &p, const swap_struct_t<T, F> v) {
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return p != v.swap();
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}
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template <typename S, typename T, typename F>
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bool operator==(const S &p, const swap_struct_t<T, F> v) {
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return p == v.swap();
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}
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template <typename T>
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struct swap_64_t {
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static T swap(T x) {
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return (T)Common::swap64(*(u64 *)&x);
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}
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};
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template <typename T>
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struct swap_32_t {
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static T swap(T x) {
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return (T)Common::swap32(*(u32 *)&x);
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}
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};
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|
|
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template <typename T>
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struct swap_16_t {
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static T swap(T x) {
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|
return (T)Common::swap16(*(u16 *)&x);
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|
}
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|
};
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|
|
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template <typename T>
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|
struct swap_float_t {
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|
static T swap(T x) {
|
|
return (T)Common::swapf(*(float *)&x);
|
|
}
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|
};
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|
|
|
template <typename T>
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|
struct swap_double_t {
|
|
static T swap(T x) {
|
|
return (T)Common::swapd(*(double *)&x);
|
|
}
|
|
};
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|
|
|
#if COMMON_LITTLE_ENDIAN
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|
typedef u32 u32_le;
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|
typedef u16 u16_le;
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|
typedef u64 u64_le;
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|
|
|
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
|