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Fix and cleanup endianess defines

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Use various defines set by the compiler to determine the
endianess of the target arch.
This commit is contained in:
dhewg 2011-12-07 17:15:02 +01:00
parent 04832863e8
commit 5ee2e5b564
2 changed files with 38 additions and 12 deletions
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24
neo/idlib/Lib.cpp
View file

@ -152,12 +152,12 @@ dword PackColor( const idVec4 &color ) {
dz = ColorFloatToByte( color.z );
dw = ColorFloatToByte( color.w );
#if defined(_WIN32) || defined(__linux__) || (defined(MACOS_X) && defined(__i386__))
#if defined(ID_LITTLE_ENDIAN)
return ( dx << 0 ) | ( dy << 8 ) | ( dz << 16 ) | ( dw << 24 );
#elif (defined(MACOS_X) && defined(__ppc__))
#elif defined(ID_BIG_ENDIAN)
return ( dx << 24 ) | ( dy << 16 ) | ( dz << 8 ) | ( dw << 0 );
#else
#error OS define is required!
#error unknown endianness!
#endif
}
@ -167,18 +167,18 @@ UnpackColor
================
*/
void UnpackColor( const dword color, idVec4 &unpackedColor ) {
#if defined(_WIN32) || defined(__linux__) || (defined(MACOS_X) && defined(__i386__))
#if defined(ID_LITTLE_ENDIAN)
unpackedColor.Set( ( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 24 ) & 255 ) * ( 1.0f / 255.0f ) );
#elif (defined(MACOS_X) && defined(__ppc__))
#elif defined(ID_BIG_ENDIAN)
unpackedColor.Set( ( ( color >> 24 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ) );
#else
#error OS define is required!
#error unknown endianness!
#endif
}
@ -194,12 +194,12 @@ dword PackColor( const idVec3 &color ) {
dy = ColorFloatToByte( color.y );
dz = ColorFloatToByte( color.z );
#if defined(_WIN32) || defined(__linux__) || (defined(MACOS_X) && defined(__i386__))
#if defined(ID_LITTLE_ENDIAN)
return ( dx << 0 ) | ( dy << 8 ) | ( dz << 16 );
#elif (defined(MACOS_X) && defined(__ppc__))
#elif defined(ID_BIG_ENDIAN)
return ( dy << 16 ) | ( dz << 8 ) | ( dx << 0 );
#else
#error OS define is required!
#error unknown endianness!
#endif
}
@ -209,16 +209,16 @@ UnpackColor
================
*/
void UnpackColor( const dword color, idVec3 &unpackedColor ) {
#if defined(_WIN32) || defined(__linux__) || (defined(MACOS_X) && defined(__i386__))
#if defined(ID_LITTLE_ENDIAN)
unpackedColor.Set( ( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ) );
#elif (defined(MACOS_X) && defined(__ppc__))
#elif defined(ID_BIG_ENDIAN)
unpackedColor.Set( ( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ) );
#else
#error OS define is required!
#error unknown endianness!
#endif
}

26
neo/sys/sys_public.h
View file

@ -61,8 +61,13 @@ If you have questions concerning this license or the applicable additional terms
#define THREAD_RETURN_TYPE dword
#if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
#define ID_LITTLE_ENDIAN 1
#endif
#endif
// Mac OSX
#if defined(MACOS_X) || defined(__APPLE__)
@ -159,6 +164,27 @@ If you have questions concerning this license or the applicable additional terms
#endif
#if !defined(ID_LITTLE_ENDIAN) && !defined(ID_BIG_ENDIAN)
#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__)
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define ID_LITTLE_ENDIAN
#endif
#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__)
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define ID_BIG_ENDIAN
#endif
#endif
#endif
#if !defined(ID_LITTLE_ENDIAN) && !defined(ID_BIG_ENDIAN)
#if defined(__i386__) || defined(__x86_64__)
#define ID_LITTLE_ENDIAN 1
#elif defined(__ppc__)
#define ID_BIG_ENDIAN 1
#endif
#endif
#ifdef __GNUC__
#define id_attribute(x) __attribute__(x)
#else