diff options
Diffstat (limited to 'dependencies/SDL/SDL_endian.h')
| -rw-r--r-- | dependencies/SDL/SDL_endian.h | 348 |
1 files changed, 0 insertions, 348 deletions
diff --git a/dependencies/SDL/SDL_endian.h b/dependencies/SDL/SDL_endian.h deleted file mode 100644 index c3f8431..0000000 --- a/dependencies/SDL/SDL_endian.h +++ /dev/null @@ -1,348 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ - -/** - * \file SDL_endian.h - * - * Functions for reading and writing endian-specific values - */ - -#ifndef SDL_endian_h_ -#define SDL_endian_h_ - -#include "SDL_stdinc.h" - -#if defined(_MSC_VER) && (_MSC_VER >= 1400) -/* As of Clang 11, '_m_prefetchw' is conflicting with the winnt.h's version, - so we define the needed '_m_prefetch' here as a pseudo-header, until the issue is fixed. */ -#ifdef __clang__ -#ifndef __PRFCHWINTRIN_H -#define __PRFCHWINTRIN_H -static __inline__ void __attribute__((__always_inline__, __nodebug__)) -_m_prefetch(void *__P) -{ - __builtin_prefetch(__P, 0, 3 /* _MM_HINT_T0 */); -} -#endif /* __PRFCHWINTRIN_H */ -#endif /* __clang__ */ - -#include <intrin.h> -#endif - -/** - * \name 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 -#elif defined(__OpenBSD__) || defined(__DragonFly__) -#include <endian.h> -#define SDL_BYTEORDER BYTE_ORDER -#elif defined(__FreeBSD__) || defined(__NetBSD__) -#include <sys/endian.h> -#define SDL_BYTEORDER BYTE_ORDER -/* predefs from newer gcc and clang versions: */ -#elif defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__) && defined(__BYTE_ORDER__) -#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) -#define SDL_BYTEORDER SDL_LIL_ENDIAN -#elif (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) -#define SDL_BYTEORDER SDL_BIG_ENDIAN -#else -#error Unsupported endianness -#endif /**/ -#else -#if defined(__hppa__) || \ - defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \ - (defined(__MIPS__) && defined(__MIPSEB__)) || \ - defined(__ppc__) || defined(__POWERPC__) || defined(__powerpc__) || defined(__PPC__) || \ - defined(__sparc__) -#define SDL_BYTEORDER SDL_BIG_ENDIAN -#else -#define SDL_BYTEORDER SDL_LIL_ENDIAN -#endif -#endif /* __linux__ */ -#endif /* !SDL_BYTEORDER */ - -#ifndef SDL_FLOATWORDORDER /* Not defined in SDL_config.h? */ -/* predefs from newer gcc versions: */ -#if defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__) && defined(__FLOAT_WORD_ORDER__) -#if (__FLOAT_WORD_ORDER__ == __ORDER_LITTLE_ENDIAN__) -#define SDL_FLOATWORDORDER SDL_LIL_ENDIAN -#elif (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__) -#define SDL_FLOATWORDORDER SDL_BIG_ENDIAN -#else -#error Unsupported endianness -#endif /**/ -#elif defined(__MAVERICK__) -/* For Maverick, float words are always little-endian. */ -#define SDL_FLOATWORDORDER SDL_LIL_ENDIAN -#elif (defined(__arm__) || defined(__thumb__)) && !defined(__VFP_FP__) && !defined(__ARM_EABI__) -/* For FPA, float words are always big-endian. */ -#define SDL_FLOATWORDORDER SDL_BIG_ENDIAN -#else -/* By default, assume that floats words follow the memory system mode. */ -#define SDL_FLOATWORDORDER SDL_BYTEORDER -#endif /* __FLOAT_WORD_ORDER__ */ -#endif /* !SDL_FLOATWORDORDER */ - - -#include "begin_code.h" -/* Set up for C function definitions, even when using C++ */ -#ifdef __cplusplus -extern "C" { -#endif - -/** - * \file SDL_endian.h - */ - -/* various modern compilers may have builtin swap */ -#if defined(__GNUC__) || defined(__clang__) -# define HAS_BUILTIN_BSWAP16 (_SDL_HAS_BUILTIN(__builtin_bswap16)) || \ - (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) -# define HAS_BUILTIN_BSWAP32 (_SDL_HAS_BUILTIN(__builtin_bswap32)) || \ - (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) -# define HAS_BUILTIN_BSWAP64 (_SDL_HAS_BUILTIN(__builtin_bswap64)) || \ - (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) - - /* this one is broken */ -# define HAS_BROKEN_BSWAP (__GNUC__ == 2 && __GNUC_MINOR__ <= 95) -#else -# define HAS_BUILTIN_BSWAP16 0 -# define HAS_BUILTIN_BSWAP32 0 -# define HAS_BUILTIN_BSWAP64 0 -# define HAS_BROKEN_BSWAP 0 -#endif - -#if HAS_BUILTIN_BSWAP16 -#define SDL_Swap16(x) __builtin_bswap16(x) -#elif defined(_MSC_VER) && (_MSC_VER >= 1400) -#pragma intrinsic(_byteswap_ushort) -#define SDL_Swap16(x) _byteswap_ushort(x) -#elif defined(__i386__) && !HAS_BROKEN_BSWAP -SDL_FORCE_INLINE Uint16 -SDL_Swap16(Uint16 x) -{ - __asm__("xchgb %b0,%h0": "=q"(x):"0"(x)); - return x; -} -#elif defined(__x86_64__) -SDL_FORCE_INLINE Uint16 -SDL_Swap16(Uint16 x) -{ - __asm__("xchgb %b0,%h0": "=Q"(x):"0"(x)); - return x; -} -#elif (defined(__powerpc__) || defined(__ppc__)) -SDL_FORCE_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(__m68k__) && !defined(__mcoldfire__)) -SDL_FORCE_INLINE Uint16 -SDL_Swap16(Uint16 x) -{ - __asm__("rorw #8,%0": "=d"(x): "0"(x):"cc"); - return x; -} -#elif defined(__WATCOMC__) && defined(__386__) -extern __inline Uint16 SDL_Swap16(Uint16); -#pragma aux SDL_Swap16 = \ - "xchg al, ah" \ - parm [ax] \ - modify [ax]; -#else -SDL_FORCE_INLINE Uint16 -SDL_Swap16(Uint16 x) -{ - return SDL_static_cast(Uint16, ((x << 8) | (x >> 8))); -} -#endif - -#if HAS_BUILTIN_BSWAP32 -#define SDL_Swap32(x) __builtin_bswap32(x) -#elif defined(_MSC_VER) && (_MSC_VER >= 1400) -#pragma intrinsic(_byteswap_ulong) -#define SDL_Swap32(x) _byteswap_ulong(x) -#elif defined(__i386__) && !HAS_BROKEN_BSWAP -SDL_FORCE_INLINE Uint32 -SDL_Swap32(Uint32 x) -{ - __asm__("bswap %0": "=r"(x):"0"(x)); - return x; -} -#elif defined(__x86_64__) -SDL_FORCE_INLINE Uint32 -SDL_Swap32(Uint32 x) -{ - __asm__("bswapl %0": "=r"(x):"0"(x)); - return x; -} -#elif (defined(__powerpc__) || defined(__ppc__)) -SDL_FORCE_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(__m68k__) && !defined(__mcoldfire__)) -SDL_FORCE_INLINE Uint32 -SDL_Swap32(Uint32 x) -{ - __asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0": "=d"(x): "0"(x):"cc"); - return x; -} -#elif defined(__WATCOMC__) && defined(__386__) -extern __inline Uint32 SDL_Swap32(Uint32); -#pragma aux SDL_Swap32 = \ - "bswap eax" \ - parm [eax] \ - modify [eax]; -#else -SDL_FORCE_INLINE Uint32 -SDL_Swap32(Uint32 x) -{ - return SDL_static_cast(Uint32, ((x << 24) | ((x << 8) & 0x00FF0000) | - ((x >> 8) & 0x0000FF00) | (x >> 24))); -} -#endif - -#if HAS_BUILTIN_BSWAP64 -#define SDL_Swap64(x) __builtin_bswap64(x) -#elif defined(_MSC_VER) && (_MSC_VER >= 1400) -#pragma intrinsic(_byteswap_uint64) -#define SDL_Swap64(x) _byteswap_uint64(x) -#elif defined(__i386__) && !HAS_BROKEN_BSWAP -SDL_FORCE_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(__x86_64__) -SDL_FORCE_INLINE Uint64 -SDL_Swap64(Uint64 x) -{ - __asm__("bswapq %0": "=r"(x):"0"(x)); - return x; -} -#elif defined(__WATCOMC__) && defined(__386__) -extern __inline Uint64 SDL_Swap64(Uint64); -#pragma aux SDL_Swap64 = \ - "bswap eax" \ - "bswap edx" \ - "xchg eax,edx" \ - parm [eax edx] \ - modify [eax edx]; -#else -SDL_FORCE_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 - - -SDL_FORCE_INLINE float -SDL_SwapFloat(float x) -{ - union { - float f; - Uint32 ui32; - } swapper; - swapper.f = x; - swapper.ui32 = SDL_Swap32(swapper.ui32); - return swapper.f; -} - -/* remove extra macros */ -#undef HAS_BROKEN_BSWAP -#undef HAS_BUILTIN_BSWAP16 -#undef HAS_BUILTIN_BSWAP32 -#undef HAS_BUILTIN_BSWAP64 - -/** - * \name Swap to native - * 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_SwapFloatLE(X) (X) -#define SDL_SwapBE16(X) SDL_Swap16(X) -#define SDL_SwapBE32(X) SDL_Swap32(X) -#define SDL_SwapBE64(X) SDL_Swap64(X) -#define SDL_SwapFloatBE(X) SDL_SwapFloat(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_SwapFloatLE(X) SDL_SwapFloat(X) -#define SDL_SwapBE16(X) (X) -#define SDL_SwapBE32(X) (X) -#define SDL_SwapBE64(X) (X) -#define SDL_SwapFloatBE(X) (X) -#endif -/* @} *//* Swap to native */ - -/* Ends C function definitions when using C++ */ -#ifdef __cplusplus -} -#endif -#include "close_code.h" - -#endif /* SDL_endian_h_ */ - -/* vi: set ts=4 sw=4 expandtab: */ |