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Fixes for large operands (> 0x7fff). Closes #34

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Michael Hansen 2013-08-06 22:16:28 -07:00
commit ad03ec3034
2 changed files with 3 additions and 14 deletions
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13
bytecode.cpp
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@ -273,24 +273,15 @@ void bc_next(PycBuffer& source, PycModule* mod, int& opcode, int& operand, int&
{
opcode = Pyc::ByteToOpcode(mod->majorVer(), mod->minorVer(), source.getByte());
operand = 0;
bool haveExtArg = false;
pos += 1;
if (opcode == Pyc::EXTENDED_ARG_A) {
operand = source.get16() << 16;
opcode = source.getByte();
haveExtArg = true;
opcode = Pyc::ByteToOpcode(mod->majorVer(), mod->minorVer(), source.getByte());
pos += 3;
}
if (opcode >= Pyc::PYC_HAVE_ARG) {
// If we have an extended arg, we want to OR the lower part,
// else we want the whole thing (in case it's negative). We use
// the bool so that values between 0x8000 and 0xFFFF can be stored
// without becoming negative
if (haveExtArg)
operand |= (source.get16() & 0xFFFF);
else
operand = source.get16();
operand |= source.get16();
pos += 2;
}
}