tools/llvm-pdbdump/PrettyVariableDumper.cpp

   1 //===- PrettyVariableDumper.cpp ---------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "PrettyVariableDumper.h"
  11
  12 #include "LinePrinter.h"
  13 #include "PrettyBuiltinDumper.h"
  14 #include "PrettyFunctionDumper.h"
  15 #include "llvm-pdbdump.h"
  16
  17 #include "llvm/DebugInfo/PDB/IPDBSession.h"
  18 #include "llvm/DebugInfo/PDB/PDBSymbolData.h"
  19 #include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
  20 #include "llvm/DebugInfo/PDB/PDBSymbolTypeArray.h"
  21 #include "llvm/DebugInfo/PDB/PDBSymbolTypeEnum.h"
  22 #include "llvm/DebugInfo/PDB/PDBSymbolTypeEnum.h"
  23 #include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
  24 #include "llvm/DebugInfo/PDB/PDBSymbolTypePointer.h"
  25 #include "llvm/DebugInfo/PDB/PDBSymbolTypeTypedef.h"
  26 #include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
  27 #include "llvm/DebugInfo/PDB/PDBTypes.h"
  28
  29 #include "llvm/Support/Format.h"
  30
  31 using namespace llvm;
  32 using namespace llvm::codeview;
  33 using namespace llvm::pdb;
  34
  35 VariableDumper::VariableDumper(LinePrinter &P)
  36     : PDBSymDumper(true), Printer(P) {}
  37
  38 void VariableDumper::start(const PDBSymbolData &Var, uint32_t Offset) {
  39   if (Var.isCompilerGenerated() && opts::pretty::ExcludeCompilerGenerated)
  40     return;
  41   if (Printer.IsSymbolExcluded(Var.getName()))
  42     return;
  43
  44   auto VarType = Var.getType();
  45
  46   uint64_t Length = VarType->getRawSymbol().getLength();
  47
  48   switch (auto LocType = Var.getLocationType()) {
  49   case PDB_LocType::Static:
  50     Printer.NewLine();
  51     Printer << "data [";
  52     WithColor(Printer, PDB_ColorItem::Address).get()
  53         << format_hex(Var.getVirtualAddress(), 10);
  54     Printer << ", sizeof=" << Length << "] ";
  55     WithColor(Printer, PDB_ColorItem::Keyword).get() << "static ";
  56     dumpSymbolTypeAndName(*VarType, Var.getName());
  57     break;
  58   case PDB_LocType::Constant:
  59     if (isa<PDBSymbolTypeEnum>(*VarType))
  60       break;
  61     Printer.NewLine();
  62     Printer << "data [sizeof=" << Length << "] ";
  63     dumpSymbolTypeAndName(*VarType, Var.getName());
  64     Printer << " = ";
  65     WithColor(Printer, PDB_ColorItem::LiteralValue).get() << Var.getValue();
  66     break;
  67   case PDB_LocType::ThisRel:
  68     Printer.NewLine();
  69     Printer << "data ";
  70     WithColor(Printer, PDB_ColorItem::Offset).get()
  71         << "+" << format_hex(Offset + Var.getOffset(), 4)
  72         << " [sizeof=" << Length << "] ";
  73     dumpSymbolTypeAndName(*VarType, Var.getName());
  74     break;
  75   case PDB_LocType::BitField:
  76     Printer.NewLine();
  77     Printer << "data ";
  78     WithColor(Printer, PDB_ColorItem::Offset).get()
  79         << "+" << format_hex(Offset + Var.getOffset(), 4)
  80         << " [sizeof=" << Length << "] ";
  81     dumpSymbolTypeAndName(*VarType, Var.getName());
  82     Printer << " : ";
  83     WithColor(Printer, PDB_ColorItem::LiteralValue).get() << Var.getLength();
  84     break;
  85   default:
  86     Printer.NewLine();
  87     Printer << "data [sizeof=" << Length << "] ";
  88     Printer << "unknown(" << LocType << ") ";
  89     WithColor(Printer, PDB_ColorItem::Identifier).get() << Var.getName();
  90     break;
  91   }
  92 }
  93
  94 void VariableDumper::startVbptr(uint32_t Offset, uint32_t Size) {
  95   Printer.NewLine();
  96   Printer << "vbptr ";
  97
  98   WithColor(Printer, PDB_ColorItem::Offset).get()
  99       << "+" << format_hex(Offset, 4) << " [sizeof=" << Size << "] ";
 100 }
 101
 102 void VariableDumper::start(const PDBSymbolTypeVTable &Var, uint32_t Offset) {
 103   Printer.NewLine();
 104   Printer << "vfptr ";
 105   auto VTableType = cast<PDBSymbolTypePointer>(Var.getType());
 106   uint32_t PointerSize = VTableType->getLength();
 107
 108   WithColor(Printer, PDB_ColorItem::Offset).get()
 109       << "+" << format_hex(Offset + Var.getOffset(), 4)
 110       << " [sizeof=" << PointerSize << "] ";
 111 }
 112
 113 void VariableDumper::dump(const PDBSymbolTypeArray &Symbol) {
 114   auto ElementType = Symbol.getElementType();
 115   assert(ElementType);
 116   if (!ElementType)
 117     return;
 118   ElementType->dump(*this);
 119 }
 120
 121 void VariableDumper::dumpRight(const PDBSymbolTypeArray &Symbol) {
 122   auto ElementType = Symbol.getElementType();
 123   assert(ElementType);
 124   if (!ElementType)
 125     return;
 126   Printer << '[' << Symbol.getCount() << ']';
 127   ElementType->dumpRight(*this);
 128 }
 129
 130 void VariableDumper::dump(const PDBSymbolTypeBuiltin &Symbol) {
 131   BuiltinDumper Dumper(Printer);
 132   Dumper.start(Symbol);
 133 }
 134
 135 void VariableDumper::dump(const PDBSymbolTypeEnum &Symbol) {
 136   WithColor(Printer, PDB_ColorItem::Type).get() << Symbol.getName();
 137 }
 138
 139 void VariableDumper::dump(const PDBSymbolTypeFunctionSig &Symbol) {
 140   auto ReturnType = Symbol.getReturnType();
 141   ReturnType->dump(*this);
 142   Printer << " ";
 143
 144   uint32_t ClassParentId = Symbol.getClassParentId();
 145   auto ClassParent =
 146       Symbol.getSession().getConcreteSymbolById<PDBSymbolTypeUDT>(
 147           ClassParentId);
 148
 149   if (ClassParent) {
 150     WithColor(Printer, PDB_ColorItem::Identifier).get()
 151       << ClassParent->getName();
 152     Printer << "::";
 153   }
 154 }
 155
 156 void VariableDumper::dumpRight(const PDBSymbolTypeFunctionSig &Symbol) {
 157   Printer << "(";
 158   if (auto Arguments = Symbol.getArguments()) {
 159     uint32_t Index = 0;
 160     while (auto Arg = Arguments->getNext()) {
 161       Arg->dump(*this);
 162       if (++Index < Arguments->getChildCount())
 163         Printer << ", ";
 164     }
 165   }
 166   Printer << ")";
 167
 168   if (Symbol.isConstType())
 169     WithColor(Printer, PDB_ColorItem::Keyword).get() << " const";
 170   if (Symbol.isVolatileType())
 171     WithColor(Printer, PDB_ColorItem::Keyword).get() << " volatile";
 172 }
 173
 174 void VariableDumper::dump(const PDBSymbolTypePointer &Symbol) {
 175   auto PointeeType = Symbol.getPointeeType();
 176   if (!PointeeType)
 177     return;
 178   PointeeType->dump(*this);
 179   if (auto FuncSig = unique_dyn_cast<PDBSymbolTypeFunctionSig>(PointeeType)) {
 180     // A hack to get the calling convention in the right spot.
 181     Printer << " (";
 182     PDB_CallingConv CC = FuncSig->getCallingConvention();
 183     WithColor(Printer, PDB_ColorItem::Keyword).get() << CC << " ";
 184   } else if (isa<PDBSymbolTypeArray>(PointeeType)) {
 185     Printer << " (";
 186   }
 187   Printer << (Symbol.isReference() ? "&" : "*");
 188   if (Symbol.isConstType())
 189     WithColor(Printer, PDB_ColorItem::Keyword).get() << " const ";
 190   if (Symbol.isVolatileType())
 191     WithColor(Printer, PDB_ColorItem::Keyword).get() << " volatile ";
 192 }
 193
 194 void VariableDumper::dumpRight(const PDBSymbolTypePointer &Symbol) {
 195   auto PointeeType = Symbol.getPointeeType();
 196   assert(PointeeType);
 197   if (!PointeeType)
 198     return;
 199   if (isa<PDBSymbolTypeFunctionSig>(PointeeType) ||
 200       isa<PDBSymbolTypeArray>(PointeeType)) {
 201     Printer << ")";
 202   }
 203   PointeeType->dumpRight(*this);
 204 }
 205
 206 void VariableDumper::dump(const PDBSymbolTypeTypedef &Symbol) {
 207   WithColor(Printer, PDB_ColorItem::Keyword).get() << "typedef ";
 208   WithColor(Printer, PDB_ColorItem::Type).get() << Symbol.getName();
 209 }
 210
 211 void VariableDumper::dump(const PDBSymbolTypeUDT &Symbol) {
 212   WithColor(Printer, PDB_ColorItem::Type).get() << Symbol.getName();
 213 }
 214
 215 void VariableDumper::dumpSymbolTypeAndName(const PDBSymbol &Type,
 216                                            StringRef Name) {
 217   Type.dump(*this);
 218   WithColor(Printer, PDB_ColorItem::Identifier).get() << " " << Name;
 219   Type.dumpRight(*this);
 220 }