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AK: Add Endian.h header to replace NetworkOrdered.h.

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asynts 2020-08-25 15:11:15 +02:00 • committed by Andreas Kling
parent ecf6cbbd02
commit 10c6f062b3
20 changed files with 195 additions and 106 deletions
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35
AK/Platform.h
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@ -37,17 +37,17 @@
#define ARCH(arch) (defined(AK_ARCH_##arch) && AK_ARCH_##arch)
#ifdef ALWAYS_INLINE
#undef ALWAYS_INLINE
# undef ALWAYS_INLINE
#endif
#define ALWAYS_INLINE [[gnu::always_inline]] inline
#ifdef NEVER_INLINE
#undef NEVER_INLINE
# undef NEVER_INLINE
#endif
#define NEVER_INLINE [[gnu::noinline]]
#ifdef FLATTEN
#undef FLATTEN
# undef FLATTEN
#endif
#define FLATTEN [[gnu::flatten]]
@ -71,33 +71,16 @@ inline int open_with_path_length(const char* path, size_t path_length, int optio
}
#endif
template<typename T>
ALWAYS_INLINE T convert_between_host_and_network(T value)
{
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
if constexpr (sizeof(T) == 8)
return __builtin_bswap64(value);
if constexpr (sizeof(T) == 4)
return __builtin_bswap32(value);
if constexpr (sizeof(T) == 2)
return __builtin_bswap16(value);
if constexpr (sizeof(T) == 1)
return value;
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
return value;
#endif
}
ALWAYS_INLINE int count_trailing_zeroes_32(unsigned int val)
{
#if defined(__GNUC__) || defined(__clang__)
return __builtin_ctz(val);
return __builtin_ctz(val);
#else
for (u8 i = 0; i < 32; ++i) {
if ((val >> i) & 1) {
return i;
}
for (u8 i = 0; i < 32; ++i) {
if ((val >> i) & 1) {
return i;
}
return 0;
}
return 0;
#endif
}