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add missing bswap functions

This commit is contained in:
bunnei 2014-04-27 21:49:50 -04:00
parent 535947a0e1
commit 81cb80997a
1 changed files with 44 additions and 0 deletions
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44
src/common/common.h
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@ -159,4 +159,48 @@ enum EMUSTATE_CHANGE
EMUSTATE_CHANGE_STOP
};
#ifdef _MSC_VER
#ifndef _XBOX
inline unsigned long long bswap64(unsigned long long x) { return _byteswap_uint64(x); }
inline unsigned int bswap32(unsigned int x) { return _byteswap_ulong(x); }
inline unsigned short bswap16(unsigned short x) { return _byteswap_ushort(x); }
#else
inline unsigned long long bswap64(unsigned long long x) { return __loaddoublewordbytereverse(0, &x); }
inline unsigned int bswap32(unsigned int x) { return __loadwordbytereverse(0, &x); }
inline unsigned short bswap16(unsigned short x) { return __loadshortbytereverse(0, &x); }
#endif
#else
// TODO: speedup
inline unsigned short bswap16(unsigned short x) { return (x << 8) | (x >> 8); }
inline unsigned int bswap32(unsigned int x) { return (x >> 24) | ((x & 0xFF0000) >> 8) | ((x & 0xFF00) << 8) | (x << 24);}
inline unsigned long long bswap64(unsigned long long x) {return ((unsigned long long)bswap32(x) << 32) | bswap32(x >> 32); }
#endif
inline float bswapf(float f) {
union {
float f;
unsigned int u32;
} dat1, dat2;
dat1.f = f;
dat2.u32 = bswap32(dat1.u32);
return dat2.f;
}
inline double bswapd(double f) {
union {
double f;
unsigned long long u64;
} dat1, dat2;
dat1.f = f;
dat2.u64 = bswap64(dat1.u64);
return dat2.f;
}
#include "swap.h"
#endif // _COMMON_H_