lib/DebugInfo/PDB/Native/DbiModuleDescriptor.cpp

   1 //===- DbiModuleDescriptor.cpp - PDB module information -------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
  10 #include "llvm/DebugInfo/PDB/Native/RawTypes.h"
  11 #include "llvm/Support/BinaryStreamReader.h"
  12 #include "llvm/Support/Endian.h"
  13 #include "llvm/Support/Error.h"
  14 #include "llvm/Support/MathExtras.h"
  15 #include <cstdint>
  16
  17 using namespace llvm;
  18 using namespace llvm::pdb;
  19 using namespace llvm::support;
  20
  21 DbiModuleDescriptor::DbiModuleDescriptor() = default;
  22
  23 DbiModuleDescriptor::DbiModuleDescriptor(const DbiModuleDescriptor &Info) =
  24     default;
  25
  26 DbiModuleDescriptor::~DbiModuleDescriptor() = default;
  27
  28 Error DbiModuleDescriptor::initialize(BinaryStreamRef Stream,
  29                                       DbiModuleDescriptor &Info) {
  30   BinaryStreamReader Reader(Stream);
  31   if (auto EC = Reader.readObject(Info.Layout))
  32     return EC;
  33
  34   if (auto EC = Reader.readCString(Info.ModuleName))
  35     return EC;
  36
  37   if (auto EC = Reader.readCString(Info.ObjFileName))
  38     return EC;
  39   return Error::success();
  40 }
  41
  42 bool DbiModuleDescriptor::hasECInfo() const {
  43   return (Layout->Flags & ModInfoFlags::HasECFlagMask) != 0;
  44 }
  45
  46 uint16_t DbiModuleDescriptor::getTypeServerIndex() const {
  47   return (Layout->Flags & ModInfoFlags::TypeServerIndexMask) >>
  48          ModInfoFlags::TypeServerIndexShift;
  49 }
  50
  51 const SectionContrib &DbiModuleDescriptor::getSectionContrib() const {
  52   return Layout->SC;
  53 }
  54
  55 uint16_t DbiModuleDescriptor::getModuleStreamIndex() const {
  56   return Layout->ModDiStream;
  57 }
  58
  59 uint32_t DbiModuleDescriptor::getSymbolDebugInfoByteSize() const {
  60   return Layout->SymBytes;
  61 }
  62
  63 uint32_t DbiModuleDescriptor::getC11LineInfoByteSize() const {
  64   return Layout->C11Bytes;
  65 }
  66
  67 uint32_t DbiModuleDescriptor::getC13LineInfoByteSize() const {
  68   return Layout->C13Bytes;
  69 }
  70
  71 uint32_t DbiModuleDescriptor::getNumberOfFiles() const {
  72   return Layout->NumFiles;
  73 }
  74
  75 uint32_t DbiModuleDescriptor::getSourceFileNameIndex() const {
  76   return Layout->SrcFileNameNI;
  77 }
  78
  79 uint32_t DbiModuleDescriptor::getPdbFilePathNameIndex() const {
  80   return Layout->PdbFilePathNI;
  81 }
  82
  83 StringRef DbiModuleDescriptor::getModuleName() const { return ModuleName; }
  84
  85 StringRef DbiModuleDescriptor::getObjFileName() const { return ObjFileName; }
  86
  87 uint32_t DbiModuleDescriptor::getRecordLength() const {
  88   uint32_t M = ModuleName.str().size() + 1;
  89   uint32_t O = ObjFileName.str().size() + 1;
  90   uint32_t Size = sizeof(ModuleInfoHeader) + M + O;
  91   Size = alignTo(Size, 4);
  92   return Size;
  93 }