49d1a4c562
also start prefering NtDll API. so far: * NtQueryInformationFile * NtClose adds a performance workaround for windows unicode conversion. but that should probably be removed before merging
40 lines
1017 B
C
40 lines
1017 B
C
unsigned long long __cdecl _byteswap_uint64(unsigned long long _Int64);
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unsigned long long __cdecl _byteswap_uint64(unsigned long long _Int64)
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{
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#if defined(_AMD64_) || defined(__x86_64__)
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unsigned long long retval;
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__asm__ __volatile__ ("bswapq %[retval]" : [retval] "=rm" (retval) : "[retval]" (_Int64));
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return retval;
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#elif defined(_X86_) || defined(__i386__)
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union {
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long long int64part;
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struct {
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unsigned long lowpart;
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unsigned long hipart;
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};
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} retval;
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retval.int64part = _Int64;
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__asm__ __volatile__ ("bswapl %[lowpart]\n"
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"bswapl %[hipart]\n"
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: [lowpart] "=rm" (retval.hipart), [hipart] "=rm" (retval.lowpart) : "[lowpart]" (retval.lowpart), "[hipart]" (retval.hipart));
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return retval.int64part;
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#else
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unsigned char *b = (void*)&_Int64;
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unsigned char tmp;
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tmp = b[0];
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b[0] = b[7];
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b[7] = tmp;
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tmp = b[1];
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b[1] = b[6];
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b[6] = tmp;
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tmp = b[2];
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b[2] = b[5];
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b[5] = tmp;
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tmp = b[3];
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b[3] = b[4];
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b[4] = tmp;
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return _Int64;
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#endif
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}
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