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ARM support.

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This commit is contained in:
Marcel Keller
2021-04-19 21:26:54 +10:00
parent 6c89808733
commit 0f656fa7b7
112 changed files with 1736 additions and 475 deletions
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25
Tools/BitVector.cpp
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@@ -41,7 +41,7 @@ BitVector BitVector::operator &(const BitVector& other) const
bool BitVector::parity() const
{
#if defined(__SSE4_2__) or not defined(__clang__)
#if (defined(__SSE4_2__) or not defined(__clang__)) and defined(__x86_64__)
bool res = 0;
for (size_t i = 0; i < size_bytes() / 8; i++)
res ^= _popcnt64(((word*)bytes)[i]) & 1;
@@ -49,7 +49,17 @@ bool BitVector::parity() const
res ^= _popcnt32(bytes[i]) & 1;
return res;
#else
throw runtime_error("need to compile with SSE4.2 support or GCC");
bool res = 0;
for (size_t i = 0; i < size_bytes() / 8; i++)
{
word x = ((word*)bytes)[i];
for (int i = 5; i >= 0; i--)
x ^= (x >> (1 << i));
res ^= (x & 1);
}
for (size_t i = size_bytes() / 8 * 8; i < size_bytes(); i++)
res ^= (*this)[i];
return res;
#endif
}
@@ -131,12 +141,19 @@ void BitVector::input(istream& s,bool human)
void BitVector::pack(octetStream& o) const
{
o.store(nbytes);
o.store_int(nbits, 8);
o.append((octet*)bytes, nbytes);
}
void BitVector::unpack(octetStream& o)
{
o.get(nbytes);
resize(o.get_int(8));
o.consume((octet*)bytes, nbytes);
}
BitVector& BitVector::operator =(const octetStream other)
{
resize(other.get_length() * 8);
memcpy(bytes, other.get_data(), nbytes);
return *this;
}