diff options
Diffstat (limited to 'src/SDL12/include/SDL_endian.h')
| -rw-r--r-- | src/SDL12/include/SDL_endian.h | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/src/SDL12/include/SDL_endian.h b/src/SDL12/include/SDL_endian.h deleted file mode 100644 index 068da918..00000000 --- a/src/SDL12/include/SDL_endian.h +++ /dev/null @@ -1,214 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2012 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ - -/** - * @file SDL_endian.h - * Functions for reading and writing endian-specific values - */ - -#ifndef _SDL_endian_h -#define _SDL_endian_h - -#include "SDL_stdinc.h" - -/** @name SDL_ENDIANs - * The two types of endianness - */ -/*@{*/ -#define SDL_LIL_ENDIAN 1234 -#define SDL_BIG_ENDIAN 4321 -/*@}*/ - -#ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */ -#ifdef __linux__ -#include <endian.h> -#define SDL_BYTEORDER __BYTE_ORDER -#else /* __linux __ */ -#if defined(__hppa__) || \ - defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \ - (defined(__MIPS__) && defined(__MISPEB__)) || \ - defined(__ppc__) || defined(__POWERPC__) || defined(_M_PPC) || \ - defined(__sparc__) -#define SDL_BYTEORDER SDL_BIG_ENDIAN -#else -#define SDL_BYTEORDER SDL_LIL_ENDIAN -#endif -#endif /* __linux __ */ -#endif /* !SDL_BYTEORDER */ - - -#include "begin_code.h" -/* Set up for C function definitions, even when using C++ */ -#ifdef __cplusplus -extern "C" { -#endif - -/** - * @name SDL_Swap Functions - * Use inline functions for compilers that support them, and static - * functions for those that do not. Because these functions become - * static for compilers that do not support inline functions, this - * header should only be included in files that actually use them. - */ -/*@{*/ -#if defined(__GNUC__) && defined(__i386__) && \ - !(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */) -static __inline__ Uint16 SDL_Swap16(Uint16 x) -{ - __asm__("xchgb %b0,%h0" : "=q" (x) : "0" (x)); - return x; -} -#elif defined(__GNUC__) && defined(__x86_64__) -static __inline__ Uint16 SDL_Swap16(Uint16 x) -{ - __asm__("xchgb %b0,%h0" : "=Q" (x) : "0" (x)); - return x; -} -#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__)) -static __inline__ Uint16 SDL_Swap16(Uint16 x) -{ - int result; - - __asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (x >> 8), "r" (x)); - return (Uint16)result; -} -#elif defined(__GNUC__) && (defined(__m68k__) && !defined(__mcoldfire__)) -static __inline__ Uint16 SDL_Swap16(Uint16 x) -{ - __asm__("rorw #8,%0" : "=d" (x) : "0" (x) : "cc"); - return x; -} -#else -static __inline__ Uint16 SDL_Swap16(Uint16 x) { - return SDL_static_cast(Uint16, ((x<<8)|(x>>8))); -} -#endif - -#if defined(__GNUC__) && defined(__i386__) && \ - !(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */) -static __inline__ Uint32 SDL_Swap32(Uint32 x) -{ - __asm__("bswap %0" : "=r" (x) : "0" (x)); - return x; -} -#elif defined(__GNUC__) && defined(__x86_64__) -static __inline__ Uint32 SDL_Swap32(Uint32 x) -{ - __asm__("bswapl %0" : "=r" (x) : "0" (x)); - return x; -} -#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__)) -static __inline__ Uint32 SDL_Swap32(Uint32 x) -{ - Uint32 result; - - __asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (x>>24), "r" (x)); - __asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (x)); - __asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (x)); - return result; -} -#elif defined(__GNUC__) && (defined(__m68k__) && !defined(__mcoldfire__)) -static __inline__ Uint32 SDL_Swap32(Uint32 x) -{ - __asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0" : "=d" (x) : "0" (x) : "cc"); - return x; -} -#else -static __inline__ Uint32 SDL_Swap32(Uint32 x) { - return SDL_static_cast(Uint32, ((x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24))); -} -#endif - -#ifdef SDL_HAS_64BIT_TYPE -#if defined(__GNUC__) && defined(__i386__) && \ - !(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */) -static __inline__ Uint64 SDL_Swap64(Uint64 x) -{ - union { - struct { Uint32 a,b; } s; - Uint64 u; - } v; - v.u = x; - __asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1" - : "=r" (v.s.a), "=r" (v.s.b) - : "0" (v.s.a), "1" (v.s.b)); - return v.u; -} -#elif defined(__GNUC__) && defined(__x86_64__) -static __inline__ Uint64 SDL_Swap64(Uint64 x) -{ - __asm__("bswapq %0" : "=r" (x) : "0" (x)); - return x; -} -#else -static __inline__ Uint64 SDL_Swap64(Uint64 x) -{ - Uint32 hi, lo; - - /* Separate into high and low 32-bit values and swap them */ - lo = SDL_static_cast(Uint32, x & 0xFFFFFFFF); - x >>= 32; - hi = SDL_static_cast(Uint32, x & 0xFFFFFFFF); - x = SDL_Swap32(lo); - x <<= 32; - x |= SDL_Swap32(hi); - return (x); -} -#endif -#else -/* This is mainly to keep compilers from complaining in SDL code. - * If there is no real 64-bit datatype, then compilers will complain about - * the fake 64-bit datatype that SDL provides when it compiles user code. - */ -#define SDL_Swap64(X) (X) -#endif /* SDL_HAS_64BIT_TYPE */ -/*@}*/ - -/** - * @name SDL_SwapLE and SDL_SwapBE Functions - * Byteswap item from the specified endianness to the native endianness - */ -/*@{*/ -#if SDL_BYTEORDER == SDL_LIL_ENDIAN -#define SDL_SwapLE16(X) (X) -#define SDL_SwapLE32(X) (X) -#define SDL_SwapLE64(X) (X) -#define SDL_SwapBE16(X) SDL_Swap16(X) -#define SDL_SwapBE32(X) SDL_Swap32(X) -#define SDL_SwapBE64(X) SDL_Swap64(X) -#else -#define SDL_SwapLE16(X) SDL_Swap16(X) -#define SDL_SwapLE32(X) SDL_Swap32(X) -#define SDL_SwapLE64(X) SDL_Swap64(X) -#define SDL_SwapBE16(X) (X) -#define SDL_SwapBE32(X) (X) -#define SDL_SwapBE64(X) (X) -#endif -/*@}*/ - -/* Ends C function definitions when using C++ */ -#ifdef __cplusplus -} -#endif -#include "close_code.h" - -#endif /* _SDL_endian_h */ |