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      1 //===- DbiModuleDescriptor.cpp - PDB module information -------------------===//
      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 "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
     11 #include "llvm/DebugInfo/PDB/Native/RawTypes.h"
     12 #include "llvm/Support/BinaryStreamReader.h"
     13 #include "llvm/Support/Endian.h"
     14 #include "llvm/Support/Error.h"
     15 #include "llvm/Support/MathExtras.h"
     16 #include <cstdint>
     17 
     18 using namespace llvm;
     19 using namespace llvm::pdb;
     20 using namespace llvm::support;
     21 
     22 DbiModuleDescriptor::DbiModuleDescriptor() = default;
     23 
     24 DbiModuleDescriptor::DbiModuleDescriptor(const DbiModuleDescriptor &Info) =
     25     default;
     26 
     27 DbiModuleDescriptor::~DbiModuleDescriptor() = default;
     28 
     29 Error DbiModuleDescriptor::initialize(BinaryStreamRef Stream,
     30                                       DbiModuleDescriptor &Info) {
     31   BinaryStreamReader Reader(Stream);
     32   if (auto EC = Reader.readObject(Info.Layout))
     33     return EC;
     34 
     35   if (auto EC = Reader.readCString(Info.ModuleName))
     36     return EC;
     37 
     38   if (auto EC = Reader.readCString(Info.ObjFileName))
     39     return EC;
     40   return Error::success();
     41 }
     42 
     43 bool DbiModuleDescriptor::hasECInfo() const {
     44   return (Layout->Flags & ModInfoFlags::HasECFlagMask) != 0;
     45 }
     46 
     47 uint16_t DbiModuleDescriptor::getTypeServerIndex() const {
     48   return (Layout->Flags & ModInfoFlags::TypeServerIndexMask) >>
     49          ModInfoFlags::TypeServerIndexShift;
     50 }
     51 
     52 const SectionContrib &DbiModuleDescriptor::getSectionContrib() const {
     53   return Layout->SC;
     54 }
     55 
     56 uint16_t DbiModuleDescriptor::getModuleStreamIndex() const {
     57   return Layout->ModDiStream;
     58 }
     59 
     60 uint32_t DbiModuleDescriptor::getSymbolDebugInfoByteSize() const {
     61   return Layout->SymBytes;
     62 }
     63 
     64 uint32_t DbiModuleDescriptor::getC11LineInfoByteSize() const {
     65   return Layout->C11Bytes;
     66 }
     67 
     68 uint32_t DbiModuleDescriptor::getC13LineInfoByteSize() const {
     69   return Layout->C13Bytes;
     70 }
     71 
     72 uint32_t DbiModuleDescriptor::getNumberOfFiles() const {
     73   return Layout->NumFiles;
     74 }
     75 
     76 uint32_t DbiModuleDescriptor::getSourceFileNameIndex() const {
     77   return Layout->SrcFileNameNI;
     78 }
     79 
     80 uint32_t DbiModuleDescriptor::getPdbFilePathNameIndex() const {
     81   return Layout->PdbFilePathNI;
     82 }
     83 
     84 StringRef DbiModuleDescriptor::getModuleName() const { return ModuleName; }
     85 
     86 StringRef DbiModuleDescriptor::getObjFileName() const { return ObjFileName; }
     87 
     88 uint32_t DbiModuleDescriptor::getRecordLength() const {
     89   uint32_t M = ModuleName.str().size() + 1;
     90   uint32_t O = ObjFileName.str().size() + 1;
     91   uint32_t Size = sizeof(ModuleInfoHeader) + M + O;
     92   Size = alignTo(Size, 4);
     93   return Size;
     94 }
     95