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Util: Use __builtin_bswap on PPC big-endian platforms that support it

This commit is contained in:
Vicki Pfau 2020-08-29 16:15:39 -07:00
parent c8028e1a60
commit 1d186dd9ea
1 changed files with 8 additions and 9 deletions
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17
include/mgba-util/common.h
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@ -132,7 +132,14 @@ typedef intptr_t ssize_t;
#define STORE_64BE(SRC, ADDR, ARR) *(uint64_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = SRC
#define STORE_32BE(SRC, ADDR, ARR) *(uint32_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = SRC
#define STORE_16BE(SRC, ADDR, ARR) *(uint16_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = SRC
#if defined(__PPC__) || defined(__POWERPC__)
#if defined(__llvm__) || (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
#define LOAD_64LE(DEST, ADDR, ARR) DEST = __builtin_bswap64(*(uint64_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)))
#define LOAD_32LE(DEST, ADDR, ARR) DEST = __builtin_bswap32(*(uint32_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)))
#define LOAD_16LE(DEST, ADDR, ARR) DEST = __builtin_bswap16(*(uint16_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)))
#define STORE_64LE(SRC, ADDR, ARR) *(uint64_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = __builtin_bswap64(SRC)
#define STORE_32LE(SRC, ADDR, ARR) *(uint32_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = __builtin_bswap32(SRC)
#define STORE_16LE(SRC, ADDR, ARR) *(uint16_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = __builtin_bswap16(SRC)
#elif defined(__PPC__) || defined(__POWERPC__)
#define LOAD_32LE(DEST, ADDR, ARR) { \
size_t _addr = (ADDR); \
const void* _ptr = (ARR); \
@ -203,14 +210,6 @@ typedef intptr_t ssize_t;
__asm__("stdbrx %0, %1, %2" : : "r"(SRC), "b"(_ptr), "r"(_addr) : "memory"); \
}
#endif
#elif defined(__llvm__) || (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
#define LOAD_64LE(DEST, ADDR, ARR) DEST = __builtin_bswap64(*(uint64_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)))
#define LOAD_32LE(DEST, ADDR, ARR) DEST = __builtin_bswap32(*(uint32_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)))
#define LOAD_16LE(DEST, ADDR, ARR) DEST = __builtin_bswap16(*(uint16_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)))
#define STORE_64LE(SRC, ADDR, ARR) *(uint64_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = __builtin_bswap64(SRC)
#define STORE_32LE(SRC, ADDR, ARR) *(uint32_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = __builtin_bswap32(SRC)
#define STORE_16LE(SRC, ADDR, ARR) *(uint16_t*) ((uintptr_t) (ARR) + (size_t) (ADDR)) = __builtin_bswap16(SRC)
#else
#error Big endian build not supported on this platform.
#endif