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GP-2286 Formal boolean Varnodes

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This commit is contained in:
caheckman 2022-07-05 17:21:27 -04:00
parent a438a1e1ea
commit d8835b0ecb
9 changed files with 74 additions and 48 deletions
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18
Ghidra/Features/Decompiler/src/decompile/cpp/varnode.cc
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@ -819,6 +819,24 @@ Datatype *Varnode::getLocalType(bool &blockup) const
return ct;
}
/// If \b this varnode is produced by an operation with a boolean output, or if it is
/// formally marked with a boolean data-type, return \b true. The parameter \b trustAnnotation
/// toggles whether or not the formal data-type is trusted.
/// \return \b true if \b this is a formal boolean, \b false otherwise
bool Varnode::isBooleanValue(bool useAnnotation) const
{
if (isWritten()) return def->isCalculatedBool();
if (!useAnnotation)
return false;
if ((flags & (input | typelock)) == (input | typelock)) {
if (size == 1 && type->getMetatype() == TYPE_BOOL)
return true;
}
return false;
}
/// Make a local determination if \b this and \b op2 hold the same value. We check if
/// there is a common ancester for which both \b this and \b op2 are created from a direct
/// sequence of COPY operations. NOTE: This is a transitive relationship