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authorGravatar bunnei2014-04-08 19:25:03 -0400
committerGravatar bunnei2014-04-08 19:25:03 -0400
commit63e46abdb8764bc97e91bae862c8d461e61b1965 (patch)
treee73f4aa25d7b4015a265e7bbfb6004dab7561027 /src/common/common_funcs.h
parentfixed some license headers that I missed (diff)
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got rid of 'src' folders in each sub-project
Diffstat (limited to 'src/common/common_funcs.h')
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diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
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1// Copyright 2013 Dolphin Emulator Project
2// Licensed under GPLv2
3// Refer to the license.txt file included.
4
5#ifndef _COMMONFUNCS_H_
6#define _COMMONFUNCS_H_
7
8#ifdef _WIN32
9#define SLEEP(x) Sleep(x)
10#else
11#include <unistd.h>
12#define SLEEP(x) usleep(x*1000)
13#endif
14
15template <bool> struct CompileTimeAssert;
16template<> struct CompileTimeAssert<true> {};
17
18#define b2(x) ( (x) | ( (x) >> 1) )
19#define b4(x) ( b2(x) | ( b2(x) >> 2) )
20#define b8(x) ( b4(x) | ( b4(x) >> 4) )
21#define b16(x) ( b8(x) | ( b8(x) >> 8) )
22#define b32(x) (b16(x) | (b16(x) >>16) )
23#define ROUND_UP_POW2(x) (b32(x - 1) + 1)
24
25#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
26
27#if defined __GNUC__ && !defined __SSSE3__ && !defined _M_GENERIC
28#include <emmintrin.h>
29static __inline __m128i __attribute__((__always_inline__))
30_mm_shuffle_epi8(__m128i a, __m128i mask)
31{
32 __m128i result;
33 __asm__("pshufb %1, %0"
34 : "=x" (result)
35 : "xm" (mask), "0" (a));
36 return result;
37}
38#endif
39
40#ifndef _WIN32
41
42#include <errno.h>
43#ifdef __linux__
44#include <byteswap.h>
45#elif defined __FreeBSD__
46#include <sys/endian.h>
47#endif
48
49// go to debugger mode
50 #ifdef GEKKO
51 #define Crash()
52 #elif defined _M_GENERIC
53 #define Crash() { exit(1); }
54 #else
55 #define Crash() {asm ("int $3");}
56 #endif
57 #define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0]))
58// GCC 4.8 defines all the rotate functions now
59// Small issue with GCC's lrotl/lrotr intrinsics is they are still 32bit while we require 64bit
60#ifndef _rotl
61inline u32 _rotl(u32 x, int shift) {
62 shift &= 31;
63 if (!shift) return x;
64 return (x << shift) | (x >> (32 - shift));
65}
66
67inline u32 _rotr(u32 x, int shift) {
68 shift &= 31;
69 if (!shift) return x;
70 return (x >> shift) | (x << (32 - shift));
71}
72#endif
73
74inline u64 _rotl64(u64 x, unsigned int shift){
75 unsigned int n = shift % 64;
76 return (x << n) | (x >> (64 - n));
77}
78
79inline u64 _rotr64(u64 x, unsigned int shift){
80 unsigned int n = shift % 64;
81 return (x >> n) | (x << (64 - n));
82}
83
84#else // WIN32
85// Function Cross-Compatibility
86 #define strcasecmp _stricmp
87 #define strncasecmp _strnicmp
88 #define unlink _unlink
89 #define snprintf _snprintf
90 #define vscprintf _vscprintf
91
92// Locale Cross-Compatibility
93 #define locale_t _locale_t
94 #define freelocale _free_locale
95 #define newlocale(mask, locale, base) _create_locale(mask, locale)
96
97 #define LC_GLOBAL_LOCALE ((locale_t)-1)
98 #define LC_ALL_MASK LC_ALL
99 #define LC_COLLATE_MASK LC_COLLATE
100 #define LC_CTYPE_MASK LC_CTYPE
101 #define LC_MONETARY_MASK LC_MONETARY
102 #define LC_NUMERIC_MASK LC_NUMERIC
103 #define LC_TIME_MASK LC_TIME
104
105 inline locale_t uselocale(locale_t new_locale)
106 {
107 // Retrieve the current per thread locale setting
108 bool bIsPerThread = (_configthreadlocale(0) == _ENABLE_PER_THREAD_LOCALE);
109
110 // Retrieve the current thread-specific locale
111 locale_t old_locale = bIsPerThread ? _get_current_locale() : LC_GLOBAL_LOCALE;
112
113 if(new_locale == LC_GLOBAL_LOCALE)
114 {
115 // Restore the global locale
116 _configthreadlocale(_DISABLE_PER_THREAD_LOCALE);
117 }
118 else if(new_locale != NULL)
119 {
120 // Configure the thread to set the locale only for this thread
121 _configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
122
123 // Set all locale categories
124 for(int i = LC_MIN; i <= LC_MAX; i++)
125 setlocale(i, new_locale->locinfo->lc_category[i].locale);
126 }
127
128 return old_locale;
129 }
130
131// 64 bit offsets for windows
132 #define fseeko _fseeki64
133 #define ftello _ftelli64
134 #define atoll _atoi64
135 #define stat64 _stat64
136 #define fstat64 _fstat64
137 #define fileno _fileno
138
139 #if _M_IX86
140 #define Crash() {__asm int 3}
141 #else
142extern "C" {
143 __declspec(dllimport) void __stdcall DebugBreak(void);
144}
145 #define Crash() {DebugBreak();}
146 #endif // M_IX86
147#endif // WIN32 ndef
148
149// Dolphin's min and max functions
150#undef min
151#undef max
152
153template<class T>
154inline T min(const T& a, const T& b) {return a > b ? b : a;}
155template<class T>
156inline T max(const T& a, const T& b) {return a > b ? a : b;}
157
158// Generic function to get last error message.
159// Call directly after the command or use the error num.
160// This function might change the error code.
161// Defined in Misc.cpp.
162const char* GetLastErrorMsg();
163
164namespace Common
165{
166inline u8 swap8(u8 _data) {return _data;}
167inline u32 swap24(const u8* _data) {return (_data[0] << 16) | (_data[1] << 8) | _data[2];}
168
169#ifdef ANDROID
170#undef swap16
171#undef swap32
172#undef swap64
173#endif
174
175#ifdef _WIN32
176inline u16 swap16(u16 _data) {return _byteswap_ushort(_data);}
177inline u32 swap32(u32 _data) {return _byteswap_ulong (_data);}
178inline u64 swap64(u64 _data) {return _byteswap_uint64(_data);}
179#elif _M_ARM
180inline u16 swap16 (u16 _data) { u32 data = _data; __asm__ ("rev16 %0, %1\n" : "=l" (data) : "l" (data)); return (u16)data;}
181inline u32 swap32 (u32 _data) {__asm__ ("rev %0, %1\n" : "=l" (_data) : "l" (_data)); return _data;}
182inline u64 swap64(u64 _data) {return ((u64)swap32(_data) << 32) | swap32(_data >> 32);}
183#elif __linux__
184inline u16 swap16(u16 _data) {return bswap_16(_data);}
185inline u32 swap32(u32 _data) {return bswap_32(_data);}
186inline u64 swap64(u64 _data) {return bswap_64(_data);}
187#elif __APPLE__
188inline __attribute__((always_inline)) u16 swap16(u16 _data)
189 {return (_data >> 8) | (_data << 8);}
190inline __attribute__((always_inline)) u32 swap32(u32 _data)
191 {return __builtin_bswap32(_data);}
192inline __attribute__((always_inline)) u64 swap64(u64 _data)
193 {return __builtin_bswap64(_data);}
194#elif __FreeBSD__
195inline u16 swap16(u16 _data) {return bswap16(_data);}
196inline u32 swap32(u32 _data) {return bswap32(_data);}
197inline u64 swap64(u64 _data) {return bswap64(_data);}
198#else
199// Slow generic implementation.
200inline u16 swap16(u16 data) {return (data >> 8) | (data << 8);}
201inline u32 swap32(u32 data) {return (swap16(data) << 16) | swap16(data >> 16);}
202inline u64 swap64(u64 data) {return ((u64)swap32(data) << 32) | swap32(data >> 32);}
203#endif
204
205inline u16 swap16(const u8* _pData) {return swap16(*(const u16*)_pData);}
206inline u32 swap32(const u8* _pData) {return swap32(*(const u32*)_pData);}
207inline u64 swap64(const u8* _pData) {return swap64(*(const u64*)_pData);}
208
209template <int count>
210void swap(u8*);
211
212template <>
213inline void swap<1>(u8* data)
214{}
215
216template <>
217inline void swap<2>(u8* data)
218{
219 *reinterpret_cast<u16*>(data) = swap16(data);
220}
221
222template <>
223inline void swap<4>(u8* data)
224{
225 *reinterpret_cast<u32*>(data) = swap32(data);
226}
227
228template <>
229inline void swap<8>(u8* data)
230{
231 *reinterpret_cast<u64*>(data) = swap64(data);
232}
233
234template <typename T>
235inline T FromBigEndian(T data)
236{
237 //static_assert(std::is_arithmetic<T>::value, "function only makes sense with arithmetic types");
238
239 swap<sizeof(data)>(reinterpret_cast<u8*>(&data));
240 return data;
241}
242
243} // Namespace Common
244
245#endif // _COMMONFUNCS_H_