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      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 }
     87