llvm/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 Error DbiModuleDescriptor::initialize(BinaryStreamRef Stream,
  22                                       DbiModuleDescriptor &Info) {
  23   BinaryStreamReader Reader(Stream);
  24   if (auto EC = Reader.readObject(Info.Layout))
  25     return EC;
  26
  27   if (auto EC = Reader.readCString(Info.ModuleName))
  28     return EC;
  29
  30   if (auto EC = Reader.readCString(Info.ObjFileName))
  31     return EC;
  32   return Error::success();
  33 }
  34
  35 bool DbiModuleDescriptor::hasECInfo() const {
  36   return (Layout->Flags & ModInfoFlags::HasECFlagMask) != 0;
  37 }
  38
  39 uint16_t DbiModuleDescriptor::getTypeServerIndex() const {
  40   return (Layout->Flags & ModInfoFlags::TypeServerIndexMask) >>
  41          ModInfoFlags::TypeServerIndexShift;
  42 }
  43
  44 const SectionContrib &DbiModuleDescriptor::getSectionContrib() const {
  45   return Layout->SC;
  46 }
  47
  48 uint16_t DbiModuleDescriptor::getModuleStreamIndex() const {
  49   return Layout->ModDiStream;
  50 }
  51
  52 uint32_t DbiModuleDescriptor::getSymbolDebugInfoByteSize() const {
  53   return Layout->SymBytes;
  54 }
  55
  56 uint32_t DbiModuleDescriptor::getC11LineInfoByteSize() const {
  57   return Layout->C11Bytes;
  58 }
  59
  60 uint32_t DbiModuleDescriptor::getC13LineInfoByteSize() const {
  61   return Layout->C13Bytes;
  62 }
  63
  64 uint32_t DbiModuleDescriptor::getNumberOfFiles() const {
  65   return Layout->NumFiles;
  66 }
  67
  68 uint32_t DbiModuleDescriptor::getSourceFileNameIndex() const {
  69   return Layout->SrcFileNameNI;
  70 }
  71
  72 uint32_t DbiModuleDescriptor::getPdbFilePathNameIndex() const {
  73   return Layout->PdbFilePathNI;
  74 }
  75
  76 StringRef DbiModuleDescriptor::getModuleName() const { return ModuleName; }
  77
  78 StringRef DbiModuleDescriptor::getObjFileName() const { return ObjFileName; }
  79
  80 uint32_t DbiModuleDescriptor::getRecordLength() const {
  81   uint32_t M = ModuleName.str().size() + 1;
  82   uint32_t O = ObjFileName.str().size() + 1;
  83   uint32_t Size = sizeof(ModuleInfoHeader) + M + O;
  84   Size = alignTo(Size, 4);
  85   return Size;
  86 }