+++ /dev/null
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2019 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"
-
-/**
- * \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
-#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
-
-/**
- * \file SDL_endian.h
- */
-#if defined(__GNUC__) && defined(__i386__) && \
- !(__GNUC__ == 2 && __GNUC_MINOR__ == 95 /* broken gcc version */)
-SDL_FORCE_INLINE Uint16
-SDL_Swap16(Uint16 x)
-{
- __asm__("xchgb %b0,%h0": "=q"(x):"0"(x));
- return x;
-}
-#elif defined(__GNUC__) && defined(__x86_64__)
-SDL_FORCE_INLINE Uint16
-SDL_Swap16(Uint16 x)
-{
- __asm__("xchgb %b0,%h0": "=Q"(x):"0"(x));
- return x;
-}
-#elif defined(__GNUC__) && (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(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !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 defined(__GNUC__) && defined(__i386__)
-SDL_FORCE_INLINE Uint32
-SDL_Swap32(Uint32 x)
-{
- __asm__("bswap %0": "=r"(x):"0"(x));
- return x;
-}
-#elif defined(__GNUC__) && defined(__x86_64__)
-SDL_FORCE_INLINE Uint32
-SDL_Swap32(Uint32 x)
-{
- __asm__("bswapl %0": "=r"(x):"0"(x));
- return x;
-}
-#elif defined(__GNUC__) && (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(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !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);
-#ifndef __SW_3 /* 486+ */
-#pragma aux SDL_Swap32 = \
- "bswap eax" \
- parm [eax] \
- modify [eax];
-#else /* 386-only */
-#pragma aux SDL_Swap32 = \
- "xchg al, ah" \
- "ror eax, 16" \
- "xchg al, ah" \
- parm [eax] \
- modify [eax];
-#endif
-#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 defined(__GNUC__) && defined(__i386__)
-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(__GNUC__) && defined(__x86_64__)
-SDL_FORCE_INLINE Uint64
-SDL_Swap64(Uint64 x)
-{
- __asm__("bswapq %0": "=r"(x):"0"(x));
- return x;
-}
-#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;
-}
-
-
-/**
- * \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: */
projects / xonotic / xonotic.git / blobdiff