Updated SDL2
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@@ -1,6 +1,6 @@
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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@@ -25,34 +25,37 @@
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* Functions for reading and writing endian-specific values
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*/
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#ifndef _SDL_endian_h
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#define _SDL_endian_h
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#ifndef SDL_endian_h_
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#define SDL_endian_h_
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#include "SDL_stdinc.h"
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/**
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* \name The two types of endianness
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*/
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/*@{*/
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/* @{ */
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#define SDL_LIL_ENDIAN 1234
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#define SDL_BIG_ENDIAN 4321
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/*@}*/
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/* @} */
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#ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */
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#ifdef __linux__
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#include <endian.h>
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#define SDL_BYTEORDER __BYTE_ORDER
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#else /* __linux __ */
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#elif defined(__OpenBSD__)
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#include <endian.h>
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#define SDL_BYTEORDER BYTE_ORDER
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#else
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#if defined(__hppa__) || \
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defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
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(defined(__MIPS__) && defined(__MISPEB__)) || \
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(defined(__MIPS__) && defined(__MIPSEB__)) || \
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defined(__ppc__) || defined(__POWERPC__) || defined(_M_PPC) || \
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defined(__sparc__)
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#define SDL_BYTEORDER SDL_BIG_ENDIAN
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#else
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#define SDL_BYTEORDER SDL_LIL_ENDIAN
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#endif
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#endif /* __linux __ */
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#endif /* __linux__ */
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#endif /* !SDL_BYTEORDER */
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@@ -96,6 +99,12 @@ SDL_Swap16(Uint16 x)
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__asm__("rorw #8,%0": "=d"(x): "0"(x):"cc");
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return x;
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}
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#elif defined(__WATCOMC__) && defined(__386__)
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extern _inline Uint16 SDL_Swap16(Uint16);
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#pragma aux SDL_Swap16 = \
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"xchg al, ah" \
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parm [ax] \
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modify [ax];
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#else
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SDL_FORCE_INLINE Uint16
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SDL_Swap16(Uint16 x)
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@@ -136,6 +145,21 @@ SDL_Swap32(Uint32 x)
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__asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0": "=d"(x): "0"(x):"cc");
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return x;
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}
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#elif defined(__WATCOMC__) && defined(__386__)
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extern _inline Uint32 SDL_Swap32(Uint32);
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#ifndef __SW_3 /* 486+ */
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#pragma aux SDL_Swap32 = \
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"bswap eax" \
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parm [eax] \
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modify [eax];
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#else /* 386-only */
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#pragma aux SDL_Swap32 = \
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"xchg al, ah" \
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"ror eax, 16" \
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"xchg al, ah" \
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parm [eax] \
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modify [eax];
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#endif
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#else
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SDL_FORCE_INLINE Uint32
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SDL_Swap32(Uint32 x)
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@@ -206,7 +230,7 @@ SDL_SwapFloat(float x)
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* \name Swap to native
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* Byteswap item from the specified endianness to the native endianness.
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*/
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/*@{*/
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/* @{ */
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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#define SDL_SwapLE16(X) (X)
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#define SDL_SwapLE32(X) (X)
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@@ -226,7 +250,7 @@ SDL_SwapFloat(float x)
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#define SDL_SwapBE64(X) (X)
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#define SDL_SwapFloatBE(X) (X)
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#endif
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/*@}*//*Swap to native*/
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/* @} *//* Swap to native */
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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@@ -234,6 +258,6 @@ SDL_SwapFloat(float x)
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#endif
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#include "close_code.h"
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#endif /* _SDL_endian_h */
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#endif /* SDL_endian_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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