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GP-2470 Support for partial enums

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This commit is contained in:
caheckman 2024-11-01 15:54:39 +00:00
parent d5f4d3b9bc
commit 55a026b3ba
21 changed files with 1176 additions and 706 deletions
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45
Ghidra/Features/Decompiler/src/decompile/cpp/variable.cc
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@ -297,6 +297,27 @@ void HighVariable::transferPiece(HighVariable *tv2)
tv2->highflags &= ~(uint4)(intersectdirty | extendcoverdirty);
}
/// Except in specific circumstances, convert \b type into its stripped form.
void HighVariable::stripType(void) const
{
if (!type->hasStripped())
return;
if (type->getMetatype() == TYPE_PARTIALUNION) {
if (symbol != (Symbol *)0 && symboloffset != -1) {
type_metatype meta = symbol->getType()->getMetatype();
if (meta != TYPE_STRUCT && meta != TYPE_UNION) // If partial union does not have a bigger backing symbol
type = type->getStripped(); // strip the partial union
}
}
else if (type->isEnumType()) {
if (inst.size() != 1 || !inst[0]->isConstant()) // Only preserve partial enum on a constant
type = type->getStripped();
}
else
type = type->getStripped();
}
/// Only update if the cover is marked as \e dirty.
/// Merge the covers of all Varnode instances.
void HighVariable::updateInternalCover(void) const
@ -386,17 +407,7 @@ void HighVariable::updateType(void) const
vn = getTypeRepresentative();
type = vn->getType();
if (type->hasStripped()) {
if (type->getMetatype() == TYPE_PARTIALUNION) {
if (symbol != (Symbol *)0 && symboloffset != -1) {
type_metatype meta = symbol->getType()->getMetatype();
if (meta != TYPE_STRUCT && meta != TYPE_UNION) // If partial union does not have a bigger backing symbol
type = type->getStripped(); // strip the partial union
}
}
else
type = type->getStripped();
}
stripType();
// Update lock flags
flags &= ~Varnode::typelock;
if (vn->isTypeLock())
@ -549,17 +560,7 @@ void HighVariable::finalizeDatatype(TypeFactory *typeFactory)
if (tp == (Datatype *)0 || tp->getMetatype() == TYPE_UNKNOWN)
return;
type = tp;
if (type->hasStripped()) {
if (type->getMetatype() == TYPE_PARTIALUNION) {
if (symboloffset != -1) {
type_metatype meta = symbol->getType()->getMetatype();
if (meta != TYPE_STRUCT && meta != TYPE_UNION) // If partial union does not have a bigger backing symbol
type = type->getStripped(); // strip the partial union
}
}
else
type = type->getStripped();
}
stripType();
highflags |= type_finalized;
}