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//===- PrettyVariableDumper.cpp ---------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "PrettyVariableDumper.h"
#include "LinePrinter.h"
#include "PrettyBuiltinDumper.h"
#include "PrettyFunctionDumper.h"
#include "llvm-pdbutil.h"
#include "llvm/DebugInfo/PDB/IPDBSession.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/PDBSymbolTypeEnum.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypePointer.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeTypedef.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
#include "llvm/DebugInfo/PDB/PDBTypes.h"
#include "llvm/Support/Format.h"
using namespace llvm;
using namespace llvm::codeview;
using namespace llvm::pdb;
VariableDumper::VariableDumper(LinePrinter &P)
: PDBSymDumper(true), Printer(P) {}
void VariableDumper::start(const PDBSymbolData &Var, uint32_t Offset) {
if (Var.isCompilerGenerated() && opts::pretty::ExcludeCompilerGenerated)
return;
if (Printer.IsSymbolExcluded(Var.getName()))
return;
auto VarType = Var.getType();
uint64_t Length = VarType->getRawSymbol().getLength();
switch (auto LocType = Var.getLocationType()) {
case PDB_LocType::Static:
Printer.NewLine();
Printer << "data [";
WithColor(Printer, PDB_ColorItem::Address).get()
<< format_hex(Var.getVirtualAddress(), 10);
Printer << ", sizeof=" << Length << "] ";
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 [sizeof=" << Length << "] ";
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(Offset + Var.getOffset(), 4)
<< " [sizeof=" << Length << "] ";
dumpSymbolTypeAndName(*VarType, Var.getName());
break;
case PDB_LocType::BitField:
Printer.NewLine();
Printer << "data ";
WithColor(Printer, PDB_ColorItem::Offset).get()
<< "+" << format_hex(Offset + Var.getOffset(), 4)
<< " [sizeof=" << Length << "] ";
dumpSymbolTypeAndName(*VarType, Var.getName());
Printer << " : ";
WithColor(Printer, PDB_ColorItem::LiteralValue).get() << Var.getLength();
break;
default:
Printer.NewLine();
Printer << "data [sizeof=" << Length << "] ";
Printer << "unknown(" << LocType << ") ";
WithColor(Printer, PDB_ColorItem::Identifier).get() << Var.getName();
break;
}
}
void VariableDumper::startVbptr(uint32_t Offset, uint32_t Size) {
Printer.NewLine();
Printer << "vbptr ";
WithColor(Printer, PDB_ColorItem::Offset).get()
<< "+" << format_hex(Offset, 4) << " [sizeof=" << Size << "] ";
}
void VariableDumper::start(const PDBSymbolTypeVTable &Var, uint32_t Offset) {
Printer.NewLine();
Printer << "vfptr ";
auto VTableType = cast<PDBSymbolTypePointer>(Var.getType());
uint32_t PointerSize = VTableType->getLength();
WithColor(Printer, PDB_ColorItem::Offset).get()
<< "+" << format_hex(Offset + Var.getOffset(), 4)
<< " [sizeof=" << PointerSize << "] ";
}
void VariableDumper::dump(const PDBSymbolTypeArray &Symbol) {
auto ElementType = Symbol.getElementType();
assert(ElementType);
if (!ElementType)
return;
ElementType->dump(*this);
}
void VariableDumper::dumpRight(const PDBSymbolTypeArray &Symbol) {
auto ElementType = Symbol.getElementType();
assert(ElementType);
if (!ElementType)
return;
Printer << '[' << Symbol.getCount() << ']';
ElementType->dumpRight(*this);
}
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) {
auto ReturnType = Symbol.getReturnType();
ReturnType->dump(*this);
Printer << " ";
uint32_t ClassParentId = Symbol.getClassParentId();
auto ClassParent =
Symbol.getSession().getConcreteSymbolById<PDBSymbolTypeUDT>(
ClassParentId);
if (ClassParent) {
WithColor(Printer, PDB_ColorItem::Identifier).get()
<< ClassParent->getName();
Printer << "::";
}
}
void VariableDumper::dumpRight(const PDBSymbolTypeFunctionSig &Symbol) {
Printer << "(";
if (auto Arguments = Symbol.getArguments()) {
uint32_t Index = 0;
while (auto Arg = Arguments->getNext()) {
Arg->dump(*this);
if (++Index < Arguments->getChildCount())
Printer << ", ";
}
}
Printer << ")";
if (Symbol.isConstType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << " const";
if (Symbol.isVolatileType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << " volatile";
if (Symbol.getRawSymbol().isRestrictedType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << " __restrict";
}
void VariableDumper::dump(const PDBSymbolTypePointer &Symbol) {
auto PointeeType = Symbol.getPointeeType();
if (!PointeeType)
return;
PointeeType->dump(*this);
if (auto FuncSig = unique_dyn_cast<PDBSymbolTypeFunctionSig>(PointeeType)) {
// A hack to get the calling convention in the right spot.
Printer << " (";
PDB_CallingConv CC = FuncSig->getCallingConvention();
WithColor(Printer, PDB_ColorItem::Keyword).get() << CC << " ";
} else if (isa<PDBSymbolTypeArray>(PointeeType)) {
Printer << " (";
}
Printer << (Symbol.isReference() ? "&" : "*");
if (Symbol.isConstType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << " const ";
if (Symbol.isVolatileType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << " volatile ";
if (Symbol.getRawSymbol().isRestrictedType())
WithColor(Printer, PDB_ColorItem::Keyword).get() << " __restrict ";
}
void VariableDumper::dumpRight(const PDBSymbolTypePointer &Symbol) {
auto PointeeType = Symbol.getPointeeType();
assert(PointeeType);
if (!PointeeType)
return;
if (isa<PDBSymbolTypeFunctionSig>(PointeeType) ||
isa<PDBSymbolTypeArray>(PointeeType)) {
Printer << ")";
}
PointeeType->dumpRight(*this);
}
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) {
Type.dump(*this);
WithColor(Printer, PDB_ColorItem::Identifier).get() << " " << Name;
Type.dumpRight(*this);
}
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