SDL2/SDL2-endian.patch

Index: SDL2-2.0.8/include/SDL_endian.h
===================================================================
--- SDL2-2.0.8.orig/include/SDL_endian.h
+++ SDL2-2.0.8/include/SDL_endian.h
@@ -34,29 +34,17 @@
  *  \name The two types of endianness
  */
 /* @{ */
-#define SDL_LIL_ENDIAN  1234
-#define SDL_BIG_ENDIAN  4321
+#define SDL_LIL_ENDIAN  __ORDER_LITTLE_ENDIAN__
+#define SDL_BIG_ENDIAN  __ORDER_BIG_ENDIAN__
 /* @} */
 
 #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__ */
+#define SDL_BYTEORDER  __BYTE_ORDER__
 #endif /* !SDL_BYTEORDER */
 
 
 #include "begin_code.h"
+#include <byteswap.h>
 /* Set up for C function definitions, even when using C++ */
 #ifdef __cplusplus
 extern "C" {
@@ -65,149 +53,23 @@ extern "C" {
 /**
  *  \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;
+    return bswap_16(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;
+    return bswap_32(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);
+    return bswap_64(x);
 }
-#endif
-
 
 SDL_FORCE_INLINE float
 SDL_SwapFloat(float x)