#if !defined(__COREFOUNDATION_CFBYTEORDER__)
#define __COREFOUNDATION_CFBYTEORDER__ 1
#if defined(__i386__) && !defined(__LITTLE_ENDIAN__)
#define __LITTLE_ENDIAN__ 1
#endif
#if !defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)
#error Do not know the endianess of this architecture
#endif
#include <CoreFoundation/CFBase.h>
#if defined(__cplusplus)
extern "C" {
#endif
typedef enum __CFByteOrder {
CFByteOrderUnknown,
CFByteOrderLittleEndian,
CFByteOrderBigEndian
} CFByteOrder;
CF_INLINE CFByteOrder CFByteOrderGetCurrent(void) {
uint32_t x = (CFByteOrderBigEndian << 24) | CFByteOrderLittleEndian;
return (CFByteOrder)*((uint8_t *)&x);
}
CF_INLINE uint16_t CFSwapInt16(uint16_t arg) {
#if defined(__i386__) && defined(__GNUC__)
__asm__("xchgb %b0, %h0" : "+q" (arg));
return arg;
#elif defined(__ppc__) && defined(__GNUC__)
uint16_t result;
__asm__("lhbrx %0,0,%1" : "=r" (result) : "r" (&arg), "m" (arg));
return result;
#else
uint16_t result;
result = ((arg << 8) & 0xFF00) | ((arg >> 8) & 0xFF);
return result;
#endif
}
CF_INLINE uint32_t CFSwapInt32(uint32_t arg) {
#if defined(__i386__) && defined(__GNUC__)
__asm__("bswap %0" : "+r" (arg));
return arg;
#elif defined(__ppc__) && defined(__GNUC__)
uint32_t result;
__asm__("lwbrx %0,0,%1" : "=r" (result) : "r" (&arg), "m" (arg));
return result;
#else
uint32_t result;
result = ((arg & 0xFF) << 24) | ((arg & 0xFF00) << 8) | ((arg >> 8) & 0xFF00) | ((arg >> 24) & 0xFF);
return result;
#endif
}
CF_INLINE uint64_t CFSwapInt64(uint64_t arg) {
union CFSwap {
uint64_t sv;
uint32_t ul[2];
} tmp, result;
tmp.sv = arg;
result.ul[0] = CFSwapInt32(tmp.ul[1]);
result.ul[1] = CFSwapInt32(tmp.ul[0]);
return result.sv;
}
CF_INLINE uint16_t CFSwapInt16BigToHost(uint16_t arg) {
#if defined(__BIG_ENDIAN__)
return arg;
#else
return CFSwapInt16(arg);
#endif
}
CF_INLINE uint32_t CFSwapInt32BigToHost(uint32_t arg) {
#if defined(__BIG_ENDIAN__)
return arg;
#else
return CFSwapInt32(arg);
#endif
}
CF_INLINE uint64_t CFSwapInt64BigToHost(uint64_t arg) {
#if defined(__BIG_ENDIAN__)
return arg;
#else
return CFSwapInt64(arg);
#endif
}
CF_INLINE uint16_t CFSwapInt16HostToBig(uint16_t arg) {
#if defined(__BIG_ENDIAN__)
return arg;
#else
return CFSwapInt16(arg);
#endif
}
CF_INLINE uint32_t CFSwapInt32HostToBig(uint32_t arg) {
#if defined(__BIG_ENDIAN__)
return arg;
#else
return CFSwapInt32(arg);
#endif
}
CF_INLINE uint64_t CFSwapInt64HostToBig(uint64_t arg) {
#if defined(__BIG_ENDIAN__)
return arg;
#else
return CFSwapInt64(arg);
#endif
}
CF_INLINE uint16_t CFSwapInt16LittleToHost(uint16_t arg) {
#if defined(__LITTLE_ENDIAN__)
return arg;
#else
return CFSwapInt16(arg);
#endif
}
CF_INLINE uint32_t CFSwapInt32LittleToHost(uint32_t arg) {
#if defined(__LITTLE_ENDIAN__)
return arg;
#else
return CFSwapInt32(arg);
#endif
}
CF_INLINE uint64_t CFSwapInt64LittleToHost(uint64_t arg) {
#if defined(__LITTLE_ENDIAN__)
return arg;
#else
return CFSwapInt64(arg);
#endif
}
CF_INLINE uint16_t CFSwapInt16HostToLittle(uint16_t arg) {
#if defined(__LITTLE_ENDIAN__)
return arg;
#else
return CFSwapInt16(arg);
#endif
}
CF_INLINE uint32_t CFSwapInt32HostToLittle(uint32_t arg) {
#if defined(__LITTLE_ENDIAN__)
return arg;
#else
return CFSwapInt32(arg);
#endif
}
CF_INLINE uint64_t CFSwapInt64HostToLittle(uint64_t arg) {
#if defined(__LITTLE_ENDIAN__)
return arg;
#else
return CFSwapInt64(arg);
#endif
}
typedef struct {uint32_t v;} CFSwappedFloat32;
typedef struct {uint64_t v;} CFSwappedFloat64;
CF_INLINE CFSwappedFloat32 CFConvertFloat32HostToSwapped(Float32 arg) {
union CFSwap {
Float32 v;
CFSwappedFloat32 sv;
} result;
result.v = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt32(result.sv.v);
#endif
return result.sv;
}
CF_INLINE Float32 CFConvertFloat32SwappedToHost(CFSwappedFloat32 arg) {
union CFSwap {
Float32 v;
CFSwappedFloat32 sv;
} result;
result.sv = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt32(result.sv.v);
#endif
return result.v;
}
CF_INLINE CFSwappedFloat64 CFConvertFloat64HostToSwapped(Float64 arg) {
union CFSwap {
Float64 v;
CFSwappedFloat64 sv;
} result;
result.v = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt64(result.sv.v);
#endif
return result.sv;
}
CF_INLINE Float64 CFConvertFloat64SwappedToHost(CFSwappedFloat64 arg) {
union CFSwap {
Float64 v;
CFSwappedFloat64 sv;
} result;
result.sv = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt64(result.sv.v);
#endif
return result.v;
}
CF_INLINE CFSwappedFloat32 CFConvertFloatHostToSwapped(float arg) {
union CFSwap {
float v;
CFSwappedFloat32 sv;
} result;
result.v = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt32(result.sv.v);
#endif
return result.sv;
}
CF_INLINE float CFConvertFloatSwappedToHost(CFSwappedFloat32 arg) {
union CFSwap {
float v;
CFSwappedFloat32 sv;
} result;
result.sv = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt32(result.sv.v);
#endif
return result.v;
}
CF_INLINE CFSwappedFloat64 CFConvertDoubleHostToSwapped(double arg) {
union CFSwap {
double v;
CFSwappedFloat64 sv;
} result;
result.v = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt64(result.sv.v);
#endif
return result.sv;
}
CF_INLINE double CFConvertDoubleSwappedToHost(CFSwappedFloat64 arg) {
union CFSwap {
double v;
CFSwappedFloat64 sv;
} result;
result.sv = arg;
#if defined(__LITTLE_ENDIAN__)
result.sv.v = CFSwapInt64(result.sv.v);
#endif
return result.v;
}
#if defined(__cplusplus)
}
#endif
#endif