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//===- NativeTypeFunctionSig.cpp - info about function signature -*- C++-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/PDB/Native/NativeTypeFunctionSig.h"
#include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h"
#include "llvm/DebugInfo/PDB/Native/NativeEnumTypes.h"
#include "llvm/DebugInfo/PDB/PDBExtras.h"
#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
#include "llvm/DebugInfo/PDB/Native/TpiStream.h"
using namespace llvm;
using namespace llvm::codeview;
using namespace llvm::pdb;
namespace {
// This is kind of a silly class, hence why we keep it private to the file.
// It's only purpose is to wrap the real type record. I guess this is so that
// we can have the lexical parent point to the function instead of the global
// scope.
class NativeTypeFunctionArg : public NativeRawSymbol {
public:
NativeTypeFunctionArg(NativeSession &Session,
std::unique_ptr<PDBSymbol> RealType)
: NativeRawSymbol(Session, PDB_SymType::FunctionArg, 0),
RealType(std::move(RealType)) {}
void dump(raw_ostream &OS, int Indent, PdbSymbolIdField ShowIdFields,
PdbSymbolIdField RecurseIdFields) const override {
NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
dumpSymbolIdField(OS, "typeId", getTypeId(), Indent, Session,
PdbSymbolIdField::Type, ShowIdFields, RecurseIdFields);
}
SymIndexId getTypeId() const override { return RealType->getSymIndexId(); }
std::unique_ptr<PDBSymbol> RealType;
};
class NativeEnumFunctionArgs : public IPDBEnumChildren<PDBSymbol> {
public:
NativeEnumFunctionArgs(NativeSession &Session,
std::unique_ptr<NativeEnumTypes> TypeEnumerator)
: Session(Session), TypeEnumerator(std::move(TypeEnumerator)) {}
uint32_t getChildCount() const override {
return TypeEnumerator->getChildCount();
}
std::unique_ptr<PDBSymbol> getChildAtIndex(uint32_t Index) const override {
return wrap(TypeEnumerator->getChildAtIndex(Index));
}
std::unique_ptr<PDBSymbol> getNext() override {
return wrap(TypeEnumerator->getNext());
}
void reset() override { TypeEnumerator->reset(); }
private:
std::unique_ptr<PDBSymbol> wrap(std::unique_ptr<PDBSymbol> S) const {
if (!S)
return nullptr;
auto NTFA = llvm::make_unique<NativeTypeFunctionArg>(Session, std::move(S));
return PDBSymbol::create(Session, std::move(NTFA));
}
NativeSession &Session;
std::unique_ptr<NativeEnumTypes> TypeEnumerator;
};
} // namespace
NativeTypeFunctionSig::NativeTypeFunctionSig(NativeSession &Session,
SymIndexId Id,
codeview::TypeIndex Index,
codeview::ProcedureRecord Proc)
: NativeRawSymbol(Session, PDB_SymType::FunctionSig, Id),
Proc(std::move(Proc)), Index(Index), IsMemberFunction(false) {}
NativeTypeFunctionSig::NativeTypeFunctionSig(
NativeSession &Session, SymIndexId Id, codeview::TypeIndex Index,
codeview::MemberFunctionRecord MemberFunc)
: NativeRawSymbol(Session, PDB_SymType::FunctionSig, Id),
MemberFunc(std::move(MemberFunc)), Index(Index), IsMemberFunction(true) {}
void NativeTypeFunctionSig::initialize() {
if (IsMemberFunction) {
ClassParentId =
Session.getSymbolCache().findSymbolByTypeIndex(MemberFunc.ClassType);
initializeArgList(MemberFunc.ArgumentList);
} else {
initializeArgList(Proc.ArgumentList);
}
}
NativeTypeFunctionSig::~NativeTypeFunctionSig() {}
void NativeTypeFunctionSig::initializeArgList(codeview::TypeIndex ArgListTI) {
TpiStream &Tpi = cantFail(Session.getPDBFile().getPDBTpiStream());
CVType CVT = Tpi.typeCollection().getType(ArgListTI);
cantFail(TypeDeserializer::deserializeAs<ArgListRecord>(CVT, ArgList));
}
void NativeTypeFunctionSig::dump(raw_ostream &OS, int Indent,
PdbSymbolIdField ShowIdFields,
PdbSymbolIdField RecurseIdFields) const {
NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
dumpSymbolIdField(OS, "lexicalParentId", 0, Indent, Session,
PdbSymbolIdField::LexicalParent, ShowIdFields,
RecurseIdFields);
dumpSymbolField(OS, "callingConvention", getCallingConvention(), Indent);
dumpSymbolField(OS, "count", getCount(), Indent);
dumpSymbolIdField(OS, "typeId", getTypeId(), Indent, Session,
PdbSymbolIdField::Type, ShowIdFields, RecurseIdFields);
if (IsMemberFunction)
dumpSymbolField(OS, "thisAdjust", getThisAdjust(), Indent);
dumpSymbolField(OS, "constructor", hasConstructor(), Indent);
dumpSymbolField(OS, "constType", isConstType(), Indent);
dumpSymbolField(OS, "isConstructorVirtualBase", isConstructorVirtualBase(),
Indent);
dumpSymbolField(OS, "isCxxReturnUdt", isCxxReturnUdt(), Indent);
dumpSymbolField(OS, "unalignedType", isUnalignedType(), Indent);
dumpSymbolField(OS, "volatileType", isVolatileType(), Indent);
}
std::unique_ptr<IPDBEnumSymbols>
NativeTypeFunctionSig::findChildren(PDB_SymType Type) const {
if (Type != PDB_SymType::FunctionArg)
return llvm::make_unique<NullEnumerator<PDBSymbol>>();
auto NET = llvm::make_unique<NativeEnumTypes>(Session,
/* copy */ ArgList.ArgIndices);
return std::unique_ptr<IPDBEnumSymbols>(
new NativeEnumFunctionArgs(Session, std::move(NET)));
}
SymIndexId NativeTypeFunctionSig::getClassParentId() const {
if (!IsMemberFunction)
return 0;
return ClassParentId;
}
PDB_CallingConv NativeTypeFunctionSig::getCallingConvention() const {
return IsMemberFunction ? MemberFunc.CallConv : Proc.CallConv;
}
uint32_t NativeTypeFunctionSig::getCount() const {
return IsMemberFunction ? (1 + MemberFunc.getParameterCount())
: Proc.getParameterCount();
}
SymIndexId NativeTypeFunctionSig::getTypeId() const {
TypeIndex ReturnTI =
IsMemberFunction ? MemberFunc.getReturnType() : Proc.getReturnType();
SymIndexId Result = Session.getSymbolCache().findSymbolByTypeIndex(ReturnTI);
return Result;
}
int32_t NativeTypeFunctionSig::getThisAdjust() const {
return IsMemberFunction ? MemberFunc.getThisPointerAdjustment() : 0;
}
bool NativeTypeFunctionSig::hasConstructor() const {
if (!IsMemberFunction)
return false;
return (MemberFunc.getOptions() & FunctionOptions::Constructor) !=
FunctionOptions::None;
}
bool NativeTypeFunctionSig::isConstType() const { return false; }
bool NativeTypeFunctionSig::isConstructorVirtualBase() const {
if (!IsMemberFunction)
return false;
return (MemberFunc.getOptions() &
FunctionOptions::ConstructorWithVirtualBases) !=
FunctionOptions::None;
}
bool NativeTypeFunctionSig::isCxxReturnUdt() const {
FunctionOptions Options =
IsMemberFunction ? MemberFunc.getOptions() : Proc.getOptions();
return (Options & FunctionOptions::CxxReturnUdt) != FunctionOptions::None;
}
bool NativeTypeFunctionSig::isUnalignedType() const { return false; }
bool NativeTypeFunctionSig::isVolatileType() const { return false; }
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