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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#ifndef _COMMONFUNCS_H_
#define _COMMONFUNCS_H_
#ifdef _WIN32
#define SLEEP(x) Sleep(x)
#else
#include <unistd.h>
#define SLEEP(x) usleep(x*1000)
#endif
template <bool> struct CompileTimeAssert;
template<> struct CompileTimeAssert<true> {};
#define b2(x) ( (x) | ( (x) >> 1) )
#define b4(x) ( b2(x) | ( b2(x) >> 2) )
#define b8(x) ( b4(x) | ( b4(x) >> 4) )
#define b16(x) ( b8(x) | ( b8(x) >> 8) )
#define b32(x) (b16(x) | (b16(x) >>16) )
#define ROUND_UP_POW2(x) (b32(x - 1) + 1)
#define MIN(a, b) ((a)<(b)?(a):(b))
#define MAX(a, b) ((a)>(b)?(a):(b))
#define CLAMP(x, min, max) (((x) > max) ? max : (((x) < min) ? min : (x)))
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#ifndef _WIN32
#include <errno.h>
#ifdef __linux__
#include <byteswap.h>
#elif defined __FreeBSD__
#include <sys/endian.h>
#endif
// go to debugger mode
#ifdef GEKKO
#define Crash()
#elif defined _M_GENERIC
#define Crash() { exit(1); }
#else
#define Crash() {asm ("int $3");}
#endif
#define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0]))
// GCC 4.8 defines all the rotate functions now
// Small issue with GCC's lrotl/lrotr intrinsics is they are still 32bit while we require 64bit
#ifndef _rotl
inline u32 _rotl(u32 x, int shift) {
shift &= 31;
if (!shift) return x;
return (x << shift) | (x >> (32 - shift));
}
inline u32 _rotr(u32 x, int shift) {
shift &= 31;
if (!shift) return x;
return (x >> shift) | (x << (32 - shift));
}
#endif
inline u64 _rotl64(u64 x, unsigned int shift){
unsigned int n = shift % 64;
return (x << n) | (x >> (64 - n));
}
inline u64 _rotr64(u64 x, unsigned int shift){
unsigned int n = shift % 64;
return (x >> n) | (x << (64 - n));
}
#else // WIN32
// Function Cross-Compatibility
#define strcasecmp _stricmp
#define strncasecmp _strnicmp
#define unlink _unlink
#define snprintf _snprintf
#define vscprintf _vscprintf
// Locale Cross-Compatibility
#define locale_t _locale_t
#define freelocale _free_locale
#define newlocale(mask, locale, base) _create_locale(mask, locale)
#define LC_GLOBAL_LOCALE ((locale_t)-1)
#define LC_ALL_MASK LC_ALL
#define LC_COLLATE_MASK LC_COLLATE
#define LC_CTYPE_MASK LC_CTYPE
#define LC_MONETARY_MASK LC_MONETARY
#define LC_NUMERIC_MASK LC_NUMERIC
#define LC_TIME_MASK LC_TIME
inline locale_t uselocale(locale_t new_locale)
{
// Retrieve the current per thread locale setting
bool bIsPerThread = (_configthreadlocale(0) == _ENABLE_PER_THREAD_LOCALE);
// Retrieve the current thread-specific locale
locale_t old_locale = bIsPerThread ? _get_current_locale() : LC_GLOBAL_LOCALE;
if(new_locale == LC_GLOBAL_LOCALE)
{
// Restore the global locale
_configthreadlocale(_DISABLE_PER_THREAD_LOCALE);
}
else if(new_locale != NULL)
{
// Configure the thread to set the locale only for this thread
_configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
// Set all locale categories
for(int i = LC_MIN; i <= LC_MAX; i++)
setlocale(i, new_locale->locinfo->lc_category[i].locale);
}
return old_locale;
}
// 64 bit offsets for windows
#define fseeko _fseeki64
#define ftello _ftelli64
#define atoll _atoi64
#define stat64 _stat64
#define fstat64 _fstat64
#define fileno _fileno
#if _M_IX86
#define Crash() {__asm int 3}
#else
extern "C" {
__declspec(dllimport) void __stdcall DebugBreak(void);
}
#define Crash() {DebugBreak();}
#endif // M_IX86
#endif // WIN32 ndef
// Dolphin's min and max functions
#undef min
#undef max
template<class T>
inline T min(const T& a, const T& b) {return a > b ? b : a;}
template<class T>
inline T max(const T& a, const T& b) {return a > b ? a : b;}
// Generic function to get last error message.
// Call directly after the command or use the error num.
// This function might change the error code.
// Defined in Misc.cpp.
const char* GetLastErrorMsg();
namespace Common
{
inline u8 swap8(u8 _data) {return _data;}
inline u32 swap24(const u8* _data) {return (_data[0] << 16) | (_data[1] << 8) | _data[2];}
#ifdef ANDROID
#undef swap16
#undef swap32
#undef swap64
#endif
#ifdef _WIN32
inline u16 swap16(u16 _data) {return _byteswap_ushort(_data);}
inline u32 swap32(u32 _data) {return _byteswap_ulong (_data);}
inline u64 swap64(u64 _data) {return _byteswap_uint64(_data);}
#elif _M_ARM
inline u16 swap16 (u16 _data) { u32 data = _data; __asm__ ("rev16 %0, %1\n" : "=l" (data) : "l" (data)); return (u16)data;}
inline u32 swap32 (u32 _data) {__asm__ ("rev %0, %1\n" : "=l" (_data) : "l" (_data)); return _data;}
inline u64 swap64(u64 _data) {return ((u64)swap32(_data) << 32) | swap32(_data >> 32);}
#elif __linux__
inline u16 swap16(u16 _data) {return bswap_16(_data);}
inline u32 swap32(u32 _data) {return bswap_32(_data);}
inline u64 swap64(u64 _data) {return bswap_64(_data);}
#elif __APPLE__
inline __attribute__((always_inline)) u16 swap16(u16 _data)
{return (_data >> 8) | (_data << 8);}
inline __attribute__((always_inline)) u32 swap32(u32 _data)
{return __builtin_bswap32(_data);}
inline __attribute__((always_inline)) u64 swap64(u64 _data)
{return __builtin_bswap64(_data);}
#elif __FreeBSD__
inline u16 swap16(u16 _data) {return bswap16(_data);}
inline u32 swap32(u32 _data) {return bswap32(_data);}
inline u64 swap64(u64 _data) {return bswap64(_data);}
#else
// Slow generic implementation.
inline u16 swap16(u16 data) {return (data >> 8) | (data << 8);}
inline u32 swap32(u32 data) {return (swap16(data) << 16) | swap16(data >> 16);}
inline u64 swap64(u64 data) {return ((u64)swap32(data) << 32) | swap32(data >> 32);}
#endif
inline u16 swap16(const u8* _pData) {return swap16(*(const u16*)_pData);}
inline u32 swap32(const u8* _pData) {return swap32(*(const u32*)_pData);}
inline u64 swap64(const u8* _pData) {return swap64(*(const u64*)_pData);}
template <int count>
void swap(u8*);
template <>
inline void swap<1>(u8* data)
{}
template <>
inline void swap<2>(u8* data)
{
*reinterpret_cast<u16*>(data) = swap16(data);
}
template <>
inline void swap<4>(u8* data)
{
*reinterpret_cast<u32*>(data) = swap32(data);
}
template <>
inline void swap<8>(u8* data)
{
*reinterpret_cast<u64*>(data) = swap64(data);
}
template <typename T>
inline T FromBigEndian(T data)
{
//static_assert(std::is_arithmetic<T>::value, "function only makes sense with arithmetic types");
swap<sizeof(data)>(reinterpret_cast<u8*>(&data));
return data;
}
} // Namespace Common
#endif // _COMMONFUNCS_H_
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