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SDL/include/SDL_endian.h

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Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/*
Simple DirectMedia Layer
Updated copyright for 2021
2021-01-02 18:25:38 +00:00
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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
*/
Renaming of guard header names to quiet -Wreserved-id-macro Patch contributed by Sylvain
2016-11-21 05:34:54 +00:00
#ifndef SDL_endian_h_
#define SDL_endian_h_
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#include "SDL_stdinc.h"
* Support for intrinsics in MSW + Clang scenario. Utility polyfill is provided, removed the no-longer-needed conditionals.
2021-04-02 09:05:45 +00:00
#ifdef _MSC_VER
/* 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__ */
Use MSVC _byteswap intrinsics for SDL byteswapping functions This generates bswap on x86/x64 and rev on ARM
2021-01-02 18:50:01 +00:00
#include <intrin.h>
#endif
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/**
* \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
SDL_endian.h: Use endian.h for OpenBSD. Patch from OpenBSD CVS, authored by Donovan Watteau.
2019-10-21 19:22:28 +00:00
#elif defined(__OpenBSD__)
#include <endian.h>
#define SDL_BYTEORDER BYTE_ORDER
Use <sys/endian.h> for endian detection on NetBSD Signed-off-by: Nia Alarie <nia@NetBSD.org>
2021-06-12 07:42:54 +00:00
#elif defined(__FreeBSD__) || defined(__NetBSD__)
Fixed bug 5441 - Add support for endianness check on FreeBSD: Fixes endianness checking on at least powerpc64le, maybe also other architectures VVD Patch based on patch from FreeBSD port devel/sdl20: https://svnweb.freebsd.org/ports/head/devel/sdl20/files/patch-include_SDL__endian.h?view=log
2021-01-03 18:18:39 +00:00
#include <sys/endian.h>
#define SDL_BYTEORDER BYTE_ORDER
SDL_endian.h: Use endian.h for OpenBSD. Patch from OpenBSD CVS, authored by Donovan Watteau.
2019-10-21 19:22:28 +00:00
#else
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#if defined(__hppa__) || \
defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
Fix typo with __MIPSEB__ preprocessor check (bug #4836.) Patch from Simon Howard
2019-10-21 07:20:25 +00:00
(defined(__MIPS__) && defined(__MIPSEB__)) || \
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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
*/
Correctly check for bswap builtins before using The __clang_major__ and __clang_minor__ macros provide a marketing version, which is not necessarily comparable for clang distributions from different vendors[1]. In practice, the versioning scheme for Apple's clang is indeed completely different to that of the llvm.org releases. It is thus preferable to check for features directly rather than comparing versions. In this specific case, __builtin_bswap16 was being used with older Apple clang versions that don't support it. [1] https://clang.llvm.org/docs/LanguageExtensions.html#builtin-macros
2021-08-12 20:36:49 +00:00
#if (_SDL_HAS_BUILTIN(__builtin_bswap16)) || \
Use Clang/GCC builtins for SDL byteswapping functions __builtin_bswap32/64 were introduced in GCC 4.3. __builtin_bswap16 was not available on x86 until GCC 4.8 due to a bug. __builtin_bswap32/64 were introduced in Clang 2.6. __builtin_bswap16 was introduced in Clang 3.2.
2021-01-05 01:51:56 +00:00
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
#define SDL_Swap16(x) __builtin_bswap16(x)
#elif defined(__GNUC__) && defined(__i386__) && \
SDL_endian.h: minor fixes from SDL-1.2 branch ( forward-port of changesets 3909:6832b00d3594 and 5657:529d23724144 )
2020-12-30 20:55:02 +00:00
!(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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;
}
arm64 implementations of SDL_Swap16/32 (bug #5419.) patch from David Carlier.
2020-12-28 08:50:02 +00:00
#elif defined(__GNUC__) && defined(__aarch64__)
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
__asm__("rev16 %w1, %w0" : "=r"(x) : "r"(x));
return x;
}
SDL_endian.h: minor fixes from SDL-1.2 branch ( forward-port of changesets 3909:6832b00d3594 and 5657:529d23724144 )
2020-12-30 20:55:02 +00:00
#elif defined(__GNUC__) && (defined(__m68k__) && !defined(__mcoldfire__))
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
__asm__("rorw #8,%0": "=d"(x): "0"(x):"cc");
return x;
}
Use MSVC _byteswap intrinsics for SDL byteswapping functions This generates bswap on x86/x64 and rev on ARM
2021-01-02 18:50:01 +00:00
#elif defined(_MSC_VER)
#pragma intrinsic(_byteswap_ushort)
#define SDL_Swap16(x) _byteswap_ushort(x)
SDL_endian.h: add SDL_Swap16 and SDL_Swap32 for Watcom/x86 as inline asm Partially fixes Bugzilla #3758.
2017-08-18 01:32:00 +00:00
#elif defined(__WATCOMC__) && defined(__386__)
extern _inline Uint16 SDL_Swap16(Uint16);
#pragma aux SDL_Swap16 = \
"xchg al, ah" \
parm [ax] \
modify [ax];
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#else
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
return SDL_static_cast(Uint16, ((x << 8) | (x >> 8)));
}
#endif
Correctly check for bswap builtins before using The __clang_major__ and __clang_minor__ macros provide a marketing version, which is not necessarily comparable for clang distributions from different vendors[1]. In practice, the versioning scheme for Apple's clang is indeed completely different to that of the llvm.org releases. It is thus preferable to check for features directly rather than comparing versions. In this specific case, __builtin_bswap16 was being used with older Apple clang versions that don't support it. [1] https://clang.llvm.org/docs/LanguageExtensions.html#builtin-macros
2021-08-12 20:36:49 +00:00
#if (_SDL_HAS_BUILTIN(__builtin_bswap32)) || \
Use Clang/GCC builtins for SDL byteswapping functions __builtin_bswap32/64 were introduced in GCC 4.3. __builtin_bswap16 was not available on x86 until GCC 4.8 due to a bug. __builtin_bswap32/64 were introduced in Clang 2.6. __builtin_bswap16 was introduced in Clang 3.2.
2021-01-05 01:51:56 +00:00
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
#define SDL_Swap32(x) __builtin_bswap32(x)
#elif defined(__GNUC__) && defined(__i386__) && \
SDL_endian.h: minor fixes from SDL-1.2 branch ( forward-port of changesets 3909:6832b00d3594 and 5657:529d23724144 )
2020-12-30 20:55:02 +00:00
!(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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;
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
__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));
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
return result;
}
arm64 implementations of SDL_Swap16/32 (bug #5419.) patch from David Carlier.
2020-12-28 08:50:02 +00:00
#elif defined(__GNUC__) && defined(__aarch64__)
SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x)
{
__asm__("rev %w1, %w0": "=r"(x):"r"(x));
return x;
}
SDL_endian.h: minor fixes from SDL-1.2 branch ( forward-port of changesets 3909:6832b00d3594 and 5657:529d23724144 )
2020-12-30 20:55:02 +00:00
#elif defined(__GNUC__) && (defined(__m68k__) && !defined(__mcoldfire__))
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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;
}
SDL_endian.h: add SDL_Swap16 and SDL_Swap32 for Watcom/x86 as inline asm Partially fixes Bugzilla #3758.
2017-08-18 01:32:00 +00:00
#elif defined(__WATCOMC__) && defined(__386__)
extern _inline Uint32 SDL_Swap32(Uint32);
#pragma aux SDL_Swap32 = \
"bswap eax" \
parm [eax] \
modify [eax];
Use MSVC _byteswap intrinsics for SDL byteswapping functions This generates bswap on x86/x64 and rev on ARM
2021-01-02 18:50:01 +00:00
#elif defined(_MSC_VER)
#pragma intrinsic(_byteswap_ulong)
#define SDL_Swap32(x) _byteswap_ulong(x)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#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
Correctly check for bswap builtins before using The __clang_major__ and __clang_minor__ macros provide a marketing version, which is not necessarily comparable for clang distributions from different vendors[1]. In practice, the versioning scheme for Apple's clang is indeed completely different to that of the llvm.org releases. It is thus preferable to check for features directly rather than comparing versions. In this specific case, __builtin_bswap16 was being used with older Apple clang versions that don't support it. [1] https://clang.llvm.org/docs/LanguageExtensions.html#builtin-macros
2021-08-12 20:36:49 +00:00
#if (_SDL_HAS_BUILTIN(__builtin_bswap64)) || \
Use Clang/GCC builtins for SDL byteswapping functions __builtin_bswap32/64 were introduced in GCC 4.3. __builtin_bswap16 was not available on x86 until GCC 4.8 due to a bug. __builtin_bswap32/64 were introduced in Clang 2.6. __builtin_bswap16 was introduced in Clang 3.2.
2021-01-05 01:51:56 +00:00
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
#define SDL_Swap64(x) __builtin_bswap64(x)
#elif defined(__GNUC__) && defined(__i386__) && \
SDL_endian.h: minor fixes from SDL-1.2 branch ( forward-port of changesets 3909:6832b00d3594 and 5657:529d23724144 )
2020-12-30 20:55:02 +00:00
!(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
SDL_FORCE_INLINE Uint64
SDL_Swap64(Uint64 x)
{
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
union {
struct {
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
Uint32 a, b;
} s;
Uint64 u;
} v;
v.u = x;
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
__asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
: "=r"(v.s.a), "=r"(v.s.b)
: "0" (v.s.a), "1"(v.s.b));
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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;
}
added Watcom i386 inline asm for SDL_Swap64()
2021-02-23 14:37:20 +00:00
#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];
Use MSVC _byteswap intrinsics for SDL byteswapping functions This generates bswap on x86/x64 and rev on ARM
2021-01-02 18:50:01 +00:00
#elif defined(_MSC_VER)
#pragma intrinsic(_byteswap_uint64)
#define SDL_Swap64(x) _byteswap_uint64(x)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#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)
{
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
union {
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
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
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
#define SDL_SwapLE16(X) (X)
#define SDL_SwapLE32(X) (X)
#define SDL_SwapLE64(X) (X)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#define SDL_SwapFloatLE(X) (X)
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
#define SDL_SwapBE16(X) SDL_Swap16(X)
#define SDL_SwapBE32(X) SDL_Swap32(X)
#define SDL_SwapBE64(X) SDL_Swap64(X)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#define SDL_SwapFloatBE(X) SDL_SwapFloat(X)
#else
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
#define SDL_SwapLE16(X) SDL_Swap16(X)
#define SDL_SwapLE32(X) SDL_Swap32(X)
#define SDL_SwapLE64(X) SDL_Swap64(X)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#define SDL_SwapFloatLE(X) SDL_SwapFloat(X)
removed a useless restriction from Watcom version of SDL_Swap32() also did a little whitespace tidy-up.
2021-02-24 17:03:50 +00:00
#define SDL_SwapBE16(X) (X)
#define SDL_SwapBE32(X) (X)
#define SDL_SwapBE64(X) (X)
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
#define SDL_SwapFloatBE(X) (X)
#endif
/* @} *//* Swap to native */
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"
Renaming of guard header names to quiet -Wreserved-id-macro Patch contributed by Sylvain
2016-11-21 05:34:54 +00:00
#endif /* SDL_endian_h_ */
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 15:33:46 +00:00
/* vi: set ts=4 sw=4 expandtab: */