void RegisterValue::fromByteArray(const QByteArray &ba, RegisterFormat format)
{
known = !ba.isEmpty();
v.u64[1] = v.u64[0] = 0;
const int n = ba.size();
int pos = 0;
if (ba.startsWith("0x"))
pos += 2;
bool negative = pos < n && ba.at(pos) == '-';
if (negative)
++pos;
while (pos < n) {
uint c = ba.at(pos);
if (format != CharacterFormat) {
c = decodeHexChar(c);
if (c == uint(-1))
break;
}
shiftOneDigit(c, format);
++pos;
}
if (negative) {
v.u64[1] = ~v.u64[1];
v.u64[0] = ~v.u64[0];
++v.u64[0];
if (v.u64[0] == 0)
++v.u64[1];
}
}
void RegisterValue::fromString(const QString &str, RegisterFormat format)
{
known = !str.isEmpty();
v.u64[1] = v.u64[0] = 0;
const int n = str.size();
int pos = 0;
if (str.startsWith("0x"))
pos += 2;
bool negative = pos < n && str.at(pos) == '-';
if (negative)
++pos;
while (pos < n) {
uint c = str.at(pos).unicode();
if (format != CharacterFormat) {
c = decodeHexChar(c);
if (c == uint(-1))
break;
}
shiftOneDigit(c, format);
++pos;
}
if (negative) {
v.u64[1] = ~v.u64[1];
v.u64[0] = ~v.u64[0];
++v.u64[0];
if (v.u64[0] == 0)
++v.u64[1];
}
}
void RegisterValue::operator=(const QByteArray &ba)
{
uint shift = 0;
int j = 0;
v.u64[1] = v.u64[0] = 0;
for (int i = ba.size(); --i >= 0 && j < 16; ++j) {
quint64 d = decodeHexChar(ba.at(i));
if (d == uint(-1))
return;
v.u64[0] |= (d << shift);
shift += 4;
}
j = 0;
shift = 0;
for (int i = ba.size() - 16; --i >= 0 && j < 16; ++j) {
quint64 d = decodeHexChar(ba.at(i));
if (d == uint(-1))
return;
v.u64[1] |= (d << shift);
shift += 4;
}
}
