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//===- VariableDumper.cpp - -------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "VariableDumper.h"
#include "BuiltinDumper.h"
#include "LinePrinter.h"
#include "llvm-pdbdump.h"
#include "FunctionDumper.h"
#include "llvm/DebugInfo/PDB/PDBSymbolData.h"
#include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeArray.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeEnum.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypePointer.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeTypedef.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeEnum.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
#include "llvm/Support/Format.h"
using namespace llvm;
VariableDumper::VariableDumper(LinePrinter &P)
: PDBSymDumper(true), Printer(P) {}
void VariableDumper::start(const PDBSymbolData &Var) {
if (Var.isCompilerGenerated() && opts::ExcludeCompilerGenerated)
return;
if (Printer.IsSymbolExcluded(Var.getName()))
return;
auto VarType = Var.getType();
switch (auto LocType = Var.getLocationType()) {
case PDB_LocType::Static:
Printer.NewLine();
Printer << "data [";
WithColor(Printer, PDB_ColorItem::Address).get()
<< format_hex(Var.getRelativeVirtualAddress(), 10);
Printer << "] ";
WithColor(Printer, PDB_ColorItem::Keyword).get() << "static ";
dumpSymbolTypeAndName(*VarType, Var.getName());
break;
case PDB_LocType::Constant:
if (isa<PDBSymbolTypeEnum>(*VarType))
break;
Printer.NewLine();
Printer << "data ";
WithColor(Printer, PDB_ColorItem::Keyword).get() << "const ";
dumpSymbolTypeAndName(*VarType, Var.getName());
Printer << " = ";
WithColor(Printer, PDB_ColorItem::LiteralValue).get() << Var.getValue();
break;
case PDB_LocType::ThisRel:
Printer.NewLine();
Printer << "data ";
WithColor(Printer, PDB_ColorItem::Offset).get()
<< "+" << format_hex(Var.getOffset(), 4) << " ";
dumpSymbolTypeAndName(*VarType, Var.getName());
break;
case PDB_LocType::BitField:
Printer.NewLine();
Printer << "data ";
WithColor(Printer, PDB_ColorItem::Offset).get()
<< "+" << format_hex(Var.getOffset(), 4) << " ";
dumpSymbolTypeAndName(*VarType, Var.getName());
Printer << " : ";
WithColor(Printer, PDB_ColorItem::LiteralValue).get() << Var.getLength();
break;
default:
Printer.NewLine();
Printer << "data ";
Printer << "unknown(" << LocType << ") ";
WithColor(Printer, PDB_ColorItem::Identifier).get() << Var.getName();
break;
}
}
void VariableDumper::dump(const PDBSymbolTypeBuiltin &Symbol) {
BuiltinDumper Dumper(Printer);
Dumper.start(Symbol);
}
void VariableDumper::dump(const PDBSymbolTypeEnum &Symbol) {
WithColor(Printer, PDB_ColorItem::Type).get() << Symbol.getName();
}
void VariableDumper::dump(const PDBSymbolTypeFunctionSig &Symbol) {}
void VariableDumper::dump(const PDBSymbolTypePointer &Symbol) {
auto PointeeType = Symbol.getPointeeType();
if (!PointeeType)
return;
if (auto Func = dyn_cast<PDBSymbolFunc>(PointeeType.get())) {
FunctionDumper NestedDumper(Printer);
FunctionDumper::PointerType Pointer =
Symbol.isReference() ? FunctionDumper::PointerType::Reference
: FunctionDumper::PointerType::Pointer;
NestedDumper.start(*Func, Pointer);
} else {
if (Symbol.isConstType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << "const ";
if (Symbol.isVolatileType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << "volatile ";
PointeeType->dump(*this);
Printer << (Symbol.isReference() ? "&" : "*");
}
}
void VariableDumper::dump(const PDBSymbolTypeTypedef &Symbol) {
WithColor(Printer, PDB_ColorItem::Keyword).get() << "typedef ";
WithColor(Printer, PDB_ColorItem::Type).get() << Symbol.getName();
}
void VariableDumper::dump(const PDBSymbolTypeUDT &Symbol) {
WithColor(Printer, PDB_ColorItem::Type).get() << Symbol.getName();
}
void VariableDumper::dumpSymbolTypeAndName(const PDBSymbol &Type,
StringRef Name) {
if (auto *ArrayType = dyn_cast<PDBSymbolTypeArray>(&Type)) {
std::string IndexSpec;
raw_string_ostream IndexStream(IndexSpec);
std::unique_ptr<PDBSymbol> ElementType = ArrayType->getElementType();
while (auto NestedArray = dyn_cast<PDBSymbolTypeArray>(ElementType.get())) {
IndexStream << "[";
IndexStream << NestedArray->getCount();
IndexStream << "]";
ElementType = NestedArray->getElementType();
}
IndexStream << "[" << ArrayType->getCount() << "]";
ElementType->dump(*this);
WithColor(Printer, PDB_ColorItem::Identifier).get() << " " << Name;
Printer << IndexStream.str();
} else {
if (!tryDumpFunctionPointer(Type, Name)) {
Type.dump(*this);
WithColor(Printer, PDB_ColorItem::Identifier).get() << " " << Name;
}
}
}
bool VariableDumper::tryDumpFunctionPointer(const PDBSymbol &Type,
StringRef Name) {
// Function pointers come across as pointers to function signatures. But the
// signature carries no name, so we have to handle this case separately.
if (auto *PointerType = dyn_cast<PDBSymbolTypePointer>(&Type)) {
auto PointeeType = PointerType->getPointeeType();
if (auto *FunctionSig =
dyn_cast<PDBSymbolTypeFunctionSig>(PointeeType.get())) {
FunctionDumper Dumper(Printer);
FunctionDumper::PointerType PT = FunctionDumper::PointerType::Pointer;
if (PointerType->isReference())
PT = FunctionDumper::PointerType::Reference;
std::string NameStr(Name.begin(), Name.end());
Dumper.start(*FunctionSig, NameStr.c_str(), PT);
return true;
}
}
return false;
}
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