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arm64 implementations of SDL_Swap16/32 (bug #5419.)

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patch from David Carlier.
This commit is contained in:
Ozkan Sezer 2020-12-28 07:20:20 +03:00
parent c2735c0bb9
commit 2f99bc07e7
1 changed files with 14 additions and 0 deletions
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14
include/SDL_endian.h
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@ -92,6 +92,13 @@ SDL_Swap16(Uint16 x)
__asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x)); __asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x));
return (Uint16)result; return (Uint16)result;
} }
#elif defined(__GNUC__) && defined(__aarch64__)
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
__asm__("rev16 %1, %0" : "=r"(x) : "r"(x));
return x;
}
#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__) #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__)
SDL_FORCE_INLINE Uint16 SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x) SDL_Swap16(Uint16 x)
@ -138,6 +145,13 @@ SDL_Swap32(Uint32 x)
__asm__("rlwimi %0,%2,24,0,7": "=&r"(result):"0"(result), "r"(x)); __asm__("rlwimi %0,%2,24,0,7": "=&r"(result):"0"(result), "r"(x));
return result; return result;
} }
#elif defined(__GNUC__) && defined(__aarch64__)
SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x)
{
__asm__("rev %1, %0": "=r"(x):"r"(x));
return x;
}
#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__) #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__)
SDL_FORCE_INLINE Uint32 SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x) SDL_Swap32(Uint32 x)