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Remove unused 64-bit byte swap

This commit is contained in:
Lassi Kortela 2019-08-09 22:03:36 +03:00
parent 4f047eb187
commit a7296eeca5
1 changed files with 0 additions and 32 deletions
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32
c/utils.h
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@ -60,25 +60,6 @@ static uint32_t ByteSwap32(uint32_t x)
#define bswap_32(x) ByteSwap32(x) #define bswap_32(x) ByteSwap32(x)
static uint64_t ByteSwap64(uint64_t x)
{
#ifdef ARCH_X86_64
__asm("bswap %0" : "=r"(x) : "0"(x));
return x;
#else
register union {
__extension__ uint64_t __ll;
uint32_t __l[2];
} __x;
asm("xchgl %0,%1"
: "=r"(__x.__l[0]), "=r"(__x.__l[1])
: "0"(bswap_32((unsigned long)x)),
"1"(bswap_32((unsigned long)(x >> 32))));
return __x.__ll;
#endif
}
#define bswap_64(x) ByteSwap64(x)
#else #else
#define bswap_16(x) (((x)&0x00ff) << 8 | ((x)&0xff00) >> 8) #define bswap_16(x) (((x)&0x00ff) << 8 | ((x)&0xff00) >> 8)
@ -91,17 +72,4 @@ static uint64_t ByteSwap64(uint64_t x)
(((x)&0x0000ff00) << 8) | (((x)&0x000000ff) << 24)) (((x)&0x0000ff00) << 8) | (((x)&0x000000ff) << 24))
#endif #endif
static uint64_t ByteSwap64(uint64_t x)
{
union {
uint64_t ll;
uint32_t l[2];
} w, r;
w.ll = x;
r.l[0] = bswap_32(w.l[1]);
r.l[1] = bswap_32(w.l[0]);
return r.ll;
}
#define bswap_64(x) ByteSwap64(x)
#endif #endif