[llvm] r267049 - Refactor raw pdb dumper into library

Richard Smith via llvm-commits llvm-commits at lists.llvm.org
Thu Apr 21 23:13:51 PDT 2016


I'm OK with the bot being red until tomorrow
On 21 Apr 2016 7:31 p.m., "Zachary Turner" <zturner at google.com> wrote:

> Sorry I can't fix this until tomorrow. If you can rename one of them that
> would be great, otherwise you can revert if you need to (it's a few CLs)
> On Thu, Apr 21, 2016 at 7:16 PM Richard Smith <richard at metafoo.co.uk>
> wrote:
>
>> This is still breaking the modules buildbot:
>>
>>
>> http://lab.llvm.org:8011/builders/clang-x86_64-linux-selfhost-modules/builds/14806/steps/compile.llvm.stage2/logs/stdio
>>
>> Looks like an ODR violation: there seem to now be two different classes
>> called llvm::PDBContext.
>>
>> On Thu, Apr 21, 2016 at 5:03 PM, Zachary Turner via llvm-commits <
>> llvm-commits at lists.llvm.org> wrote:
>>
>>> That one is probably someone else's. Sorry can't help with that :(
>>>
>>> Sorry again for breaking it in the first place
>>>
>>> On Thu, Apr 21, 2016 at 5:01 PM Mike Aizatsky <aizatsky at google.com>
>>> wrote:
>>>
>>>> This particular one passes at
>>>> https://llvm.org/svn/llvm-project/llvm/trunk@267080
>>>> Thanks.
>>>>
>>>> CodeGen/ARM/Windows/division.ll fails though. Arghhhh!
>>>>
>>>> On Thu, Apr 21, 2016 at 4:58 PM Zachary Turner <zturner at google.com>
>>>> wrote:
>>>>
>>>>> A fix for this should already be in. Can you sync and verify?
>>>>> On Thu, Apr 21, 2016 at 4:56 PM Mike Aizatsky <aizatsky at google.com>
>>>>> wrote:
>>>>>
>>>>>> The pdb test fails on several bots and on my computer:
>>>>>>
>>>>>>     LLVM :: DebugInfo/PDB/pdbdump-headers.test
>>>>>>
>>>>>> How about full rollback?
>>>>>>
>>>>>> On Thu, Apr 21, 2016 at 3:22 PM Zachary Turner via llvm-commits <
>>>>>> llvm-commits at lists.llvm.org> wrote:
>>>>>>
>>>>>>> Fixed in r267068.
>>>>>>>
>>>>>>> On Thu, Apr 21, 2016 at 3:17 PM David Blaikie <dblaikie at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> On Thu, Apr 21, 2016 at 1:58 PM, Zachary Turner via llvm-commits <
>>>>>>>> llvm-commits at lists.llvm.org> wrote:
>>>>>>>>
>>>>>>>>> Author: zturner
>>>>>>>>> Date: Thu Apr 21 15:58:35 2016
>>>>>>>>> New Revision: 267049
>>>>>>>>>
>>>>>>>>> URL: http://llvm.org/viewvc/llvm-project?rev=267049&view=rev
>>>>>>>>> Log:
>>>>>>>>> Refactor raw pdb dumper into library
>>>>>>>>>
>>>>>>>>> PDB parsing code was hand-rolled into llvm-pdbdump. This patch
>>>>>>>>> moves the
>>>>>>>>> parsing of this code into DebugInfoPDB and makes the dumper use
>>>>>>>>> this.
>>>>>>>>>
>>>>>>>>> This is achieved by implementing the skeleton of RawPdbSession, the
>>>>>>>>> non-DIA counterpart to the existing PDB read interface. None of
>>>>>>>>> the type /
>>>>>>>>> source file / etc information is accessible yet, so this
>>>>>>>>> implementation is
>>>>>>>>> not yet close to achieving parity with the DIA counterpart, but the
>>>>>>>>> RawSession class simply holds a reference to a PDBFile class which
>>>>>>>>> handles
>>>>>>>>> parsing the file format. Additionally a PDBStream class is
>>>>>>>>> introduced
>>>>>>>>> which allows accessing the bytes of a particular stream in a PDB
>>>>>>>>> file.
>>>>>>>>>
>>>>>>>>> Differential Revision: http://reviews.llvm.org/D19343
>>>>>>>>> Reviewed By: majnemer
>>>>>>>>>
>>>>>>>>> Added:
>>>>>>>>>     llvm/trunk/include/llvm/DebugInfo/PDB/Raw/
>>>>>>>>>     llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBFile.h
>>>>>>>>>     llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBStream.h
>>>>>>>>>     llvm/trunk/include/llvm/DebugInfo/PDB/Raw/RawSession.h
>>>>>>>>>     llvm/trunk/lib/DebugInfo/PDB/Raw/
>>>>>>>>>     llvm/trunk/lib/DebugInfo/PDB/Raw/PDBFile.cpp
>>>>>>>>>     llvm/trunk/lib/DebugInfo/PDB/Raw/PDBStream.cpp
>>>>>>>>>     llvm/trunk/lib/DebugInfo/PDB/Raw/RawSession.cpp
>>>>>>>>> Modified:
>>>>>>>>>     llvm/trunk/include/llvm/DebugInfo/PDB/IPDBSession.h
>>>>>>>>>     llvm/trunk/include/llvm/DebugInfo/PDB/PDBTypes.h
>>>>>>>>>     llvm/trunk/lib/DebugInfo/PDB/CMakeLists.txt
>>>>>>>>>     llvm/trunk/lib/DebugInfo/PDB/PDB.cpp
>>>>>>>>>     llvm/trunk/tools/llvm-pdbdump/BuiltinDumper.h
>>>>>>>>>     llvm/trunk/tools/llvm-pdbdump/llvm-pdbdump.cpp
>>>>>>>>>
>>>>>>>>> Modified: llvm/trunk/include/llvm/DebugInfo/PDB/IPDBSession.h
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/IPDBSession.h?rev=267049&r1=267048&r2=267049&view=diff
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/include/llvm/DebugInfo/PDB/IPDBSession.h (original)
>>>>>>>>> +++ llvm/trunk/include/llvm/DebugInfo/PDB/IPDBSession.h Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -11,6 +11,7 @@
>>>>>>>>>  #define LLVM_DEBUGINFO_PDB_IPDBSESSION_H
>>>>>>>>>
>>>>>>>>>  #include "PDBTypes.h"
>>>>>>>>> +#include "llvm/ADT/StringRef.h"
>>>>>>>>>  #include "llvm/Support/Casting.h"
>>>>>>>>>  #include <memory>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Modified: llvm/trunk/include/llvm/DebugInfo/PDB/PDBTypes.h
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/PDBTypes.h?rev=267049&r1=267048&r2=267049&view=diff
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/include/llvm/DebugInfo/PDB/PDBTypes.h (original)
>>>>>>>>> +++ llvm/trunk/include/llvm/DebugInfo/PDB/PDBTypes.h Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -12,7 +12,6 @@
>>>>>>>>>
>>>>>>>>>  #include "llvm/Config/llvm-config.h"
>>>>>>>>>  #include "llvm/DebugInfo/CodeView/CodeView.h"
>>>>>>>>> -#include "llvm/Support/Endian.h"
>>>>>>>>>  #include <functional>
>>>>>>>>>  #include <cstdint>
>>>>>>>>>  #include <cstring>
>>>>>>>>> @@ -70,6 +69,7 @@ class PDBSymbolUnknown;
>>>>>>>>>  /// of PDB_ReaderType::DIA is supported.
>>>>>>>>>  enum class PDB_ReaderType {
>>>>>>>>>    DIA = 0,
>>>>>>>>> +  Raw = 1,
>>>>>>>>>  };
>>>>>>>>>
>>>>>>>>>  /// Defines a 128-bit unique identifier.  This maps to a GUID on
>>>>>>>>> Windows, but
>>>>>>>>> @@ -429,35 +429,6 @@ struct Variant {
>>>>>>>>>    }
>>>>>>>>>  };
>>>>>>>>>
>>>>>>>>> -namespace PDB {
>>>>>>>>> -static const char Magic[] = {'M',  'i',  'c',    'r', 'o', 's',
>>>>>>>>> 'o',  'f',
>>>>>>>>> -                             't',  ' ',  'C',    '/', 'C', '+',
>>>>>>>>> '+',  ' ',
>>>>>>>>> -                             'M',  'S',  'F',    ' ', '7', '.',
>>>>>>>>> '0',  '0',
>>>>>>>>> -                             '\r', '\n', '\x1a', 'D', 'S', '\0',
>>>>>>>>> '\0', '\0'};
>>>>>>>>> -
>>>>>>>>> -// The superblock is overlaid at the beginning of the file
>>>>>>>>> (offset 0).
>>>>>>>>> -// It starts with a magic header and is followed by information
>>>>>>>>> which describes
>>>>>>>>> -// the layout of the file system.
>>>>>>>>> -struct SuperBlock {
>>>>>>>>> -  char MagicBytes[sizeof(Magic)];
>>>>>>>>> -  // The file system is split into a variable number of fixed
>>>>>>>>> size elements.
>>>>>>>>> -  // These elements are referred to as blocks.  The size of a
>>>>>>>>> block may vary
>>>>>>>>> -  // from system to system.
>>>>>>>>> -  support::ulittle32_t BlockSize;
>>>>>>>>> -  // This field's purpose is not yet known.
>>>>>>>>> -  support::ulittle32_t Unknown0;
>>>>>>>>> -  // This contains the number of blocks resident in the file
>>>>>>>>> system.  In
>>>>>>>>> -  // practice, NumBlocks * BlockSize is equivalent to the size of
>>>>>>>>> the PDB file.
>>>>>>>>> -  support::ulittle32_t NumBlocks;
>>>>>>>>> -  // This contains the number of bytes which make up the
>>>>>>>>> directory.
>>>>>>>>> -  support::ulittle32_t NumDirectoryBytes;
>>>>>>>>> -  // This field's purpose is not yet known.
>>>>>>>>> -  support::ulittle32_t Unknown1;
>>>>>>>>> -  // This contains the block # of the block map.
>>>>>>>>> -  support::ulittle32_t BlockMapAddr;
>>>>>>>>> -};
>>>>>>>>> -} // end namespace PDB
>>>>>>>>> -
>>>>>>>>>  } // end namespace llvm
>>>>>>>>>
>>>>>>>>>  namespace std {
>>>>>>>>>
>>>>>>>>> Added: llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBFile.h
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBFile.h?rev=267049&view=auto
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBFile.h (added)
>>>>>>>>> +++ llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBFile.h Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -0,0 +1,53 @@
>>>>>>>>> +//===- PDBFile.h - Low level interface to a PDB file
>>>>>>>>> ------------*- C++ -*-===//
>>>>>>>>> +//
>>>>>>>>> +//                     The LLVM Compiler Infrastructure
>>>>>>>>> +//
>>>>>>>>> +// This file is distributed under the University of Illinois Open
>>>>>>>>> Source
>>>>>>>>> +// License. See LICENSE.TXT for details.
>>>>>>>>> +//
>>>>>>>>>
>>>>>>>>> +//===----------------------------------------------------------------------===//
>>>>>>>>> +
>>>>>>>>> +#ifndef LLVM_DEBUGINFO_PDB_RAW_PDBFILE_H
>>>>>>>>> +#define LLVM_DEBUGINFO_PDB_RAW_PDBFILE_H
>>>>>>>>> +
>>>>>>>>> +#include "llvm/ADT/DenseMap.h"
>>>>>>>>> +#include "llvm/Support/Endian.h"
>>>>>>>>> +
>>>>>>>>> +#include <memory>
>>>>>>>>> +
>>>>>>>>> +namespace llvm {
>>>>>>>>> +class MemoryBuffer;
>>>>>>>>> +
>>>>>>>>> +struct PDBContext;
>>>>>>>>> +
>>>>>>>>> +class PDBFile {
>>>>>>>>> +public:
>>>>>>>>> +  explicit PDBFile(std::unique_ptr<MemoryBuffer> MemBuffer);
>>>>>>>>> +  ~PDBFile();
>>>>>>>>> +
>>>>>>>>> +  uint32_t getBlockSize() const;
>>>>>>>>> +  uint32_t getUnknown0() const;
>>>>>>>>> +  uint32_t getBlockCount() const;
>>>>>>>>> +  uint32_t getNumDirectoryBytes() const;
>>>>>>>>> +  uint32_t getBlockMapIndex() const;
>>>>>>>>> +  uint32_t getUnknown1() const;
>>>>>>>>> +  uint32_t getNumDirectoryBlocks() const;
>>>>>>>>> +  uint64_t getBlockMapOffset() const;
>>>>>>>>> +
>>>>>>>>> +  uint32_t getNumStreams() const;
>>>>>>>>> +  uint32_t getStreamByteSize(uint32_t StreamIndex) const;
>>>>>>>>> +  llvm::ArrayRef<uint32_t> getStreamBlockList(uint32_t
>>>>>>>>> StreamIndex) const;
>>>>>>>>> +
>>>>>>>>> +  StringRef getBlockData(uint32_t BlockIndex, uint32_t NumBytes)
>>>>>>>>> const;
>>>>>>>>> +
>>>>>>>>> +  llvm::ArrayRef<uint32_t> getDirectoryBlockArray();
>>>>>>>>> +
>>>>>>>>> +  std::error_code parseFileHeaders();
>>>>>>>>> +  std::error_code parseStreamData();
>>>>>>>>> +
>>>>>>>>> +private:
>>>>>>>>> +  std::unique_ptr<PDBContext> Context;
>>>>>>>>> +};
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +#endif
>>>>>>>>>
>>>>>>>>> Added: llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBStream.h
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBStream.h?rev=267049&view=auto
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBStream.h (added)
>>>>>>>>> +++ llvm/trunk/include/llvm/DebugInfo/PDB/Raw/PDBStream.h Thu Apr
>>>>>>>>> 21 15:58:35 2016
>>>>>>>>> @@ -0,0 +1,46 @@
>>>>>>>>> +//===- PDBStream.h - Low level interface to a PDB stream
>>>>>>>>> --------*- C++ -*-===//
>>>>>>>>> +//
>>>>>>>>> +//                     The LLVM Compiler Infrastructure
>>>>>>>>> +//
>>>>>>>>> +// This file is distributed under the University of Illinois Open
>>>>>>>>> Source
>>>>>>>>> +// License. See LICENSE.TXT for details.
>>>>>>>>> +//
>>>>>>>>>
>>>>>>>>> +//===----------------------------------------------------------------------===//
>>>>>>>>> +
>>>>>>>>> +#ifndef LLVM_DEBUGINFO_PDB_RAW_PDBSTREAM_H
>>>>>>>>> +#define LLVM_DEBUGINFO_PDB_RAW_PDBSTREAM_H
>>>>>>>>> +
>>>>>>>>> +#include "llvm/ADT/ArrayRef.h"
>>>>>>>>> +#include "llvm/ADT/StringRef.h"
>>>>>>>>> +
>>>>>>>>> +namespace llvm {
>>>>>>>>> +
>>>>>>>>> +class MemoryBufferRef;
>>>>>>>>> +class PDBFile;
>>>>>>>>> +
>>>>>>>>> +class PDBStream {
>>>>>>>>> +public:
>>>>>>>>> +  PDBStream(uint32_t StreamIdx, const PDBFile &File);
>>>>>>>>> +
>>>>>>>>> +  std::error_code readInteger(uint32_t &Dest);
>>>>>>>>> +  std::error_code readZeroString(std::string &Dest);
>>>>>>>>> +  std::error_code readBytes(void *Dest, uint32_t Length);
>>>>>>>>> +
>>>>>>>>> +  void setOffset(uint32_t Off);
>>>>>>>>> +  uint32_t getOffset() const;
>>>>>>>>> +  uint32_t getLength() const;
>>>>>>>>> +
>>>>>>>>> +  template <typename T> std::error_code readObject(T *Dest) {
>>>>>>>>> +    return readBytes(reinterpret_cast<void *>(Dest), sizeof(T));
>>>>>>>>> +  }
>>>>>>>>> +
>>>>>>>>> +private:
>>>>>>>>> +  uint32_t Offset;
>>>>>>>>> +
>>>>>>>>> +  uint32_t StreamLength;
>>>>>>>>> +  std::vector<uint32_t> BlockList;
>>>>>>>>> +  const PDBFile &Pdb;
>>>>>>>>> +};
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +#endif
>>>>>>>>>
>>>>>>>>> Added: llvm/trunk/include/llvm/DebugInfo/PDB/Raw/RawSession.h
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/Raw/RawSession.h?rev=267049&view=auto
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/include/llvm/DebugInfo/PDB/Raw/RawSession.h (added)
>>>>>>>>> +++ llvm/trunk/include/llvm/DebugInfo/PDB/Raw/RawSession.h Thu Apr
>>>>>>>>> 21 15:58:35 2016
>>>>>>>>> @@ -0,0 +1,72 @@
>>>>>>>>> +//===- RawSession.h - Native implementation of IPDBSession
>>>>>>>>> ------*- C++ -*-===//
>>>>>>>>> +//
>>>>>>>>> +//                     The LLVM Compiler Infrastructure
>>>>>>>>> +//
>>>>>>>>> +// This file is distributed under the University of Illinois Open
>>>>>>>>> Source
>>>>>>>>> +// License. See LICENSE.TXT for details.
>>>>>>>>> +//
>>>>>>>>>
>>>>>>>>> +//===----------------------------------------------------------------------===//
>>>>>>>>> +
>>>>>>>>> +#ifndef LLVM_DEBUGINFO_PDB_RAW_RAWSESSION_H
>>>>>>>>> +#define LLVM_DEBUGINFO_PDB_RAW_RAWSESSION_H
>>>>>>>>> +
>>>>>>>>> +#include "llvm/DebugInfo/PDB/IPDBSession.h"
>>>>>>>>> +
>>>>>>>>> +namespace llvm {
>>>>>>>>> +class PDBFile;
>>>>>>>>> +class StringRef;
>>>>>>>>> +
>>>>>>>>> +class RawSession : public IPDBSession {
>>>>>>>>> +public:
>>>>>>>>> +  explicit RawSession(std::unique_ptr<PDBFile> PdbFile);
>>>>>>>>> +  ~RawSession() override;
>>>>>>>>> +
>>>>>>>>> +  static PDB_ErrorCode createFromPdb(StringRef Path,
>>>>>>>>> +                                     std::unique_ptr<IPDBSession>
>>>>>>>>> &Session);
>>>>>>>>> +  static PDB_ErrorCode createFromExe(StringRef Path,
>>>>>>>>> +                                     std::unique_ptr<IPDBSession>
>>>>>>>>> &Session);
>>>>>>>>> +
>>>>>>>>> +  uint64_t getLoadAddress() const override;
>>>>>>>>> +  void setLoadAddress(uint64_t Address) override;
>>>>>>>>> +  std::unique_ptr<PDBSymbolExe> getGlobalScope() const override;
>>>>>>>>> +  std::unique_ptr<PDBSymbol> getSymbolById(uint32_t SymbolId)
>>>>>>>>> const override;
>>>>>>>>> +
>>>>>>>>> +  std::unique_ptr<PDBSymbol>
>>>>>>>>> +  findSymbolByAddress(uint64_t Address, PDB_SymType Type) const
>>>>>>>>> override;
>>>>>>>>> +
>>>>>>>>> +  std::unique_ptr<IPDBEnumLineNumbers>
>>>>>>>>> +  findLineNumbers(const PDBSymbolCompiland &Compiland,
>>>>>>>>> +                  const IPDBSourceFile &File) const override;
>>>>>>>>> +  std::unique_ptr<IPDBEnumLineNumbers>
>>>>>>>>> +  findLineNumbersByAddress(uint64_t Address, uint32_t Length)
>>>>>>>>> const override;
>>>>>>>>> +
>>>>>>>>> +  std::unique_ptr<IPDBEnumSourceFiles>
>>>>>>>>> +  findSourceFiles(const PDBSymbolCompiland *Compiland,
>>>>>>>>> llvm::StringRef Pattern,
>>>>>>>>> +                  PDB_NameSearchFlags Flags) const override;
>>>>>>>>> +  std::unique_ptr<IPDBSourceFile>
>>>>>>>>> +  findOneSourceFile(const PDBSymbolCompiland *Compiland,
>>>>>>>>> +                    llvm::StringRef Pattern,
>>>>>>>>> +                    PDB_NameSearchFlags Flags) const override;
>>>>>>>>> +  std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
>>>>>>>>> +  findCompilandsForSourceFile(llvm::StringRef Pattern,
>>>>>>>>> +                              PDB_NameSearchFlags Flags) const
>>>>>>>>> override;
>>>>>>>>> +  std::unique_ptr<PDBSymbolCompiland>
>>>>>>>>> +  findOneCompilandForSourceFile(llvm::StringRef Pattern,
>>>>>>>>> +                                PDB_NameSearchFlags Flags) const
>>>>>>>>> override;
>>>>>>>>> +  std::unique_ptr<IPDBEnumSourceFiles> getAllSourceFiles() const
>>>>>>>>> override;
>>>>>>>>> +  std::unique_ptr<IPDBEnumSourceFiles> getSourceFilesForCompiland(
>>>>>>>>> +      const PDBSymbolCompiland &Compiland) const override;
>>>>>>>>> +  std::unique_ptr<IPDBSourceFile>
>>>>>>>>> +  getSourceFileById(uint32_t FileId) const override;
>>>>>>>>> +
>>>>>>>>> +  std::unique_ptr<IPDBEnumDataStreams> getDebugStreams() const
>>>>>>>>> override;
>>>>>>>>> +
>>>>>>>>> +  PDBFile &getPDBFile() { return *Pdb; }
>>>>>>>>> +  const PDBFile &getPDBFile() const { return *Pdb; }
>>>>>>>>> +
>>>>>>>>> +private:
>>>>>>>>> +  std::unique_ptr<PDBFile> Pdb;
>>>>>>>>> +};
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +#endif
>>>>>>>>>
>>>>>>>>> Modified: llvm/trunk/lib/DebugInfo/PDB/CMakeLists.txt
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/CMakeLists.txt?rev=267049&r1=267048&r2=267049&view=diff
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/lib/DebugInfo/PDB/CMakeLists.txt (original)
>>>>>>>>> +++ llvm/trunk/lib/DebugInfo/PDB/CMakeLists.txt Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -24,9 +24,13 @@ if(HAVE_DIA_SDK)
>>>>>>>>>      )
>>>>>>>>>
>>>>>>>>>      set(LIBPDB_ADDITIONAL_HEADER_DIRS
>>>>>>>>> "${LLVM_MAIN_INCLUDE_DIR}/llvm/DebugInfo/PDB/DIA")
>>>>>>>>> -
>>>>>>>>>  endif()
>>>>>>>>>
>>>>>>>>> +add_pdb_impl_folder(Raw
>>>>>>>>> +  Raw/PDBFile.cpp
>>>>>>>>> +  Raw/PDBStream.cpp
>>>>>>>>> +  Raw/RawSession.cpp)
>>>>>>>>> +
>>>>>>>>>  list(APPEND LIBPDB_ADDITIONAL_HEADER_DIRS
>>>>>>>>> "${LLVM_MAIN_INCLUDE_DIR}/llvm/DebugInfo/PDB")
>>>>>>>>>
>>>>>>>>>  add_llvm_library(LLVMDebugInfoPDB
>>>>>>>>>
>>>>>>>>> Modified: llvm/trunk/lib/DebugInfo/PDB/PDB.cpp
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/PDB.cpp?rev=267049&r1=267048&r2=267049&view=diff
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/lib/DebugInfo/PDB/PDB.cpp (original)
>>>>>>>>> +++ llvm/trunk/lib/DebugInfo/PDB/PDB.cpp Thu Apr 21 15:58:35 2016
>>>>>>>>> @@ -17,23 +17,28 @@
>>>>>>>>>  #if HAVE_DIA_SDK
>>>>>>>>>  #include "llvm/DebugInfo/PDB/DIA/DIASession.h"
>>>>>>>>>  #endif
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/RawSession.h"
>>>>>>>>>
>>>>>>>>>  using namespace llvm;
>>>>>>>>>
>>>>>>>>>  PDB_ErrorCode llvm::loadDataForPDB(PDB_ReaderType Type, StringRef
>>>>>>>>> Path,
>>>>>>>>>                                     std::unique_ptr<IPDBSession>
>>>>>>>>> &Session) {
>>>>>>>>>    // Create the correct concrete instance type based on the value
>>>>>>>>> of Type.
>>>>>>>>> +  if (Type == PDB_ReaderType::Raw)
>>>>>>>>> +    return RawSession::createFromPdb(Path, Session);
>>>>>>>>> +
>>>>>>>>>  #if HAVE_DIA_SDK
>>>>>>>>>    return DIASession::createFromPdb(Path, Session);
>>>>>>>>>  #endif
>>>>>>>>> -  return PDB_ErrorCode::NoDiaSupport;
>>>>>>>>>
>>>>>>>>
>>>>>>>> Tihs (& the same below) triggers -Wreturn-type in the case where
>>>>>>>> HAVE_DIA_SDK is false. I'm not sure what the right fix is? Should the old
>>>>>>>> return be added back again?
>>>>>>>>
>>>>>>>>
>>>>>>>>>  }
>>>>>>>>>
>>>>>>>>>  PDB_ErrorCode llvm::loadDataForEXE(PDB_ReaderType Type, StringRef
>>>>>>>>> Path,
>>>>>>>>>                                     std::unique_ptr<IPDBSession>
>>>>>>>>> &Session) {
>>>>>>>>>    // Create the correct concrete instance type based on the value
>>>>>>>>> of Type.
>>>>>>>>> +  if (Type == PDB_ReaderType::Raw)
>>>>>>>>> +    return RawSession::createFromExe(Path, Session);
>>>>>>>>> +
>>>>>>>>>  #if HAVE_DIA_SDK
>>>>>>>>>    return DIASession::createFromExe(Path, Session);
>>>>>>>>>  #endif
>>>>>>>>> -  return PDB_ErrorCode::NoDiaSupport;
>>>>>>>>>  }
>>>>>>>>>
>>>>>>>>> Added: llvm/trunk/lib/DebugInfo/PDB/Raw/PDBFile.cpp
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/Raw/PDBFile.cpp?rev=267049&view=auto
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/lib/DebugInfo/PDB/Raw/PDBFile.cpp (added)
>>>>>>>>> +++ llvm/trunk/lib/DebugInfo/PDB/Raw/PDBFile.cpp Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -0,0 +1,249 @@
>>>>>>>>> +//===- PDBFile.cpp - Low level interface to a PDB file
>>>>>>>>> ----------*- C++ -*-===//
>>>>>>>>> +//
>>>>>>>>> +//                     The LLVM Compiler Infrastructure
>>>>>>>>> +//
>>>>>>>>> +// This file is distributed under the University of Illinois Open
>>>>>>>>> Source
>>>>>>>>> +// License. See LICENSE.TXT for details.
>>>>>>>>> +//
>>>>>>>>>
>>>>>>>>> +//===----------------------------------------------------------------------===//
>>>>>>>>> +
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
>>>>>>>>> +#include "llvm/ADT/ArrayRef.h"
>>>>>>>>> +#include "llvm/Support/Endian.h"
>>>>>>>>> +#include "llvm/Support/MemoryBuffer.h"
>>>>>>>>> +
>>>>>>>>> +using namespace llvm;
>>>>>>>>> +
>>>>>>>>> +namespace {
>>>>>>>>> +static const char Magic[] = {'M',  'i',  'c',    'r', 'o', 's',
>>>>>>>>> 'o',  'f',
>>>>>>>>> +                             't',  ' ',  'C',    '/', 'C', '+',
>>>>>>>>> '+',  ' ',
>>>>>>>>> +                             'M',  'S',  'F',    ' ', '7', '.',
>>>>>>>>> '0',  '0',
>>>>>>>>> +                             '\r', '\n', '\x1a', 'D', 'S', '\0',
>>>>>>>>> '\0', '\0'};
>>>>>>>>> +
>>>>>>>>> +// The superblock is overlaid at the beginning of the file
>>>>>>>>> (offset 0).
>>>>>>>>> +// It starts with a magic header and is followed by information
>>>>>>>>> which describes
>>>>>>>>> +// the layout of the file system.
>>>>>>>>> +struct SuperBlock {
>>>>>>>>> +  char MagicBytes[sizeof(Magic)];
>>>>>>>>> +  // The file system is split into a variable number of fixed
>>>>>>>>> size elements.
>>>>>>>>> +  // These elements are referred to as blocks.  The size of a
>>>>>>>>> block may vary
>>>>>>>>> +  // from system to system.
>>>>>>>>> +  support::ulittle32_t BlockSize;
>>>>>>>>> +  // This field's purpose is not yet known.
>>>>>>>>> +  support::ulittle32_t Unknown0;
>>>>>>>>> +  // This contains the number of blocks resident in the file
>>>>>>>>> system.  In
>>>>>>>>> +  // practice, NumBlocks * BlockSize is equivalent to the size of
>>>>>>>>> the PDB file.
>>>>>>>>> +  support::ulittle32_t NumBlocks;
>>>>>>>>> +  // This contains the number of bytes which make up the
>>>>>>>>> directory.
>>>>>>>>> +  support::ulittle32_t NumDirectoryBytes;
>>>>>>>>> +  // This field's purpose is not yet known.
>>>>>>>>> +  support::ulittle32_t Unknown1;
>>>>>>>>> +  // This contains the block # of the block map.
>>>>>>>>> +  support::ulittle32_t BlockMapAddr;
>>>>>>>>> +};
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +struct llvm::PDBContext {
>>>>>>>>> +  std::unique_ptr<MemoryBuffer> Buffer;
>>>>>>>>> +  const SuperBlock *SB;
>>>>>>>>> +  std::vector<uint32_t> StreamSizes;
>>>>>>>>> +  DenseMap<uint32_t, std::vector<uint32_t>> StreamMap;
>>>>>>>>> +};
>>>>>>>>> +
>>>>>>>>> +namespace {
>>>>>>>>> +std::error_code checkOffset(MemoryBufferRef M, uintptr_t Addr,
>>>>>>>>> +                            const uint64_t Size) {
>>>>>>>>> +  if (Addr + Size < Addr || Addr + Size < Size ||
>>>>>>>>> +      Addr + Size > uintptr_t(M.getBufferEnd()) ||
>>>>>>>>> +      Addr < uintptr_t(M.getBufferStart())) {
>>>>>>>>> +    return std::make_error_code(std::errc::bad_address);
>>>>>>>>> +  }
>>>>>>>>> +  return std::error_code();
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +template <typename T>
>>>>>>>>> +std::error_code checkOffset(MemoryBufferRef M, ArrayRef<T> AR) {
>>>>>>>>> +  return checkOffset(M, uintptr_t(AR.data()), (uint64_t)AR.size()
>>>>>>>>> * sizeof(T));
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::error_code checkOffset(MemoryBufferRef M, StringRef SR) {
>>>>>>>>> +  return checkOffset(M, uintptr_t(SR.data()), SR.size());
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +uint64_t bytesToBlocks(uint64_t NumBytes, uint64_t BlockSize) {
>>>>>>>>> +  return alignTo(NumBytes, BlockSize) / BlockSize;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +uint64_t blockToOffset(uint64_t BlockNumber, uint64_t BlockSize) {
>>>>>>>>> +  return BlockNumber * BlockSize;
>>>>>>>>> +}
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +PDBFile::PDBFile(std::unique_ptr<MemoryBuffer> MemBuffer) {
>>>>>>>>> +  Context.reset(new PDBContext());
>>>>>>>>> +  Context->Buffer = std::move(MemBuffer);
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +PDBFile::~PDBFile() {}
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getBlockSize() const { return
>>>>>>>>> Context->SB->BlockSize; }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getUnknown0() const { return
>>>>>>>>> Context->SB->Unknown0; }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getBlockCount() const { return
>>>>>>>>> Context->SB->NumBlocks; }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getNumDirectoryBytes() const {
>>>>>>>>> +  return Context->SB->NumDirectoryBytes;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getBlockMapIndex() const { return
>>>>>>>>> Context->SB->BlockMapAddr; }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getUnknown1() const { return
>>>>>>>>> Context->SB->Unknown1; }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getNumDirectoryBlocks() const {
>>>>>>>>> +  return bytesToBlocks(Context->SB->NumDirectoryBytes,
>>>>>>>>> Context->SB->BlockSize);
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +uint64_t PDBFile::getBlockMapOffset() const {
>>>>>>>>> +  return (uint64_t)Context->SB->BlockMapAddr *
>>>>>>>>> Context->SB->BlockSize;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getNumStreams() const { return
>>>>>>>>> Context->StreamSizes.size(); }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBFile::getStreamByteSize(uint32_t StreamIndex) const {
>>>>>>>>> +  return Context->StreamSizes[StreamIndex];
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +llvm::ArrayRef<uint32_t>
>>>>>>>>> +PDBFile::getStreamBlockList(uint32_t StreamIndex) const {
>>>>>>>>> +  auto &Data = Context->StreamMap[StreamIndex];
>>>>>>>>> +  return llvm::ArrayRef<uint32_t>(Data);
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +StringRef PDBFile::getBlockData(uint32_t BlockIndex, uint32_t
>>>>>>>>> NumBytes) const {
>>>>>>>>> +  uint64_t StreamBlockOffset = blockToOffset(BlockIndex,
>>>>>>>>> getBlockSize());
>>>>>>>>> +
>>>>>>>>> +  return StringRef(Context->Buffer->getBufferStart() +
>>>>>>>>> StreamBlockOffset,
>>>>>>>>> +                   NumBytes);
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::error_code PDBFile::parseFileHeaders() {
>>>>>>>>> +  std::error_code EC;
>>>>>>>>> +  MemoryBufferRef BufferRef = *Context->Buffer;
>>>>>>>>> +
>>>>>>>>> +  Context->SB =
>>>>>>>>> +      reinterpret_cast<const SuperBlock
>>>>>>>>> *>(BufferRef.getBufferStart());
>>>>>>>>> +  const SuperBlock *SB = Context->SB;
>>>>>>>>> +  // We don't support blocksizes which aren't a multiple of four
>>>>>>>>> bytes.
>>>>>>>>> +  if (SB->BlockSize % sizeof(support::ulittle32_t) != 0)
>>>>>>>>> +    return std::make_error_code(std::errc::not_supported);
>>>>>>>>> +
>>>>>>>>> +  // We don't support directories whose sizes aren't a multiple
>>>>>>>>> of four bytes.
>>>>>>>>> +  if (SB->NumDirectoryBytes % sizeof(support::ulittle32_t) != 0)
>>>>>>>>> +    return std::make_error_code(std::errc::not_supported);
>>>>>>>>> +
>>>>>>>>> +  // The number of blocks which comprise the directory is a
>>>>>>>>> simple function of
>>>>>>>>> +  // the number of bytes it contains.
>>>>>>>>> +  uint64_t NumDirectoryBlocks = getNumDirectoryBlocks();
>>>>>>>>> +
>>>>>>>>> +  // The block map, as we understand it, is a block which
>>>>>>>>> consists of a list of
>>>>>>>>> +  // block numbers.
>>>>>>>>> +  // It is unclear what would happen if the number of blocks
>>>>>>>>> couldn't fit on a
>>>>>>>>> +  // single block.
>>>>>>>>> +  if (NumDirectoryBlocks > SB->BlockSize /
>>>>>>>>> sizeof(support::ulittle32_t))
>>>>>>>>> +    return std::make_error_code(std::errc::illegal_byte_sequence);
>>>>>>>>> +
>>>>>>>>> +  return std::error_code();
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::error_code PDBFile::parseStreamData() {
>>>>>>>>> +  assert(Context && Context->SB);
>>>>>>>>> +
>>>>>>>>> +  bool SeenNumStreams = false;
>>>>>>>>> +  uint32_t NumStreams = 0;
>>>>>>>>> +  uint32_t StreamIdx = 0;
>>>>>>>>> +  uint64_t DirectoryBytesRead = 0;
>>>>>>>>> +  std::error_code EC;
>>>>>>>>> +
>>>>>>>>> +  MemoryBufferRef M = *Context->Buffer;
>>>>>>>>> +  const SuperBlock *SB = Context->SB;
>>>>>>>>> +
>>>>>>>>> +  auto DirectoryBlocks = getDirectoryBlockArray();
>>>>>>>>> +
>>>>>>>>> +  // The structure of the directory is as follows:
>>>>>>>>> +  //    struct PDBDirectory {
>>>>>>>>> +  //      uint32_t NumStreams;
>>>>>>>>> +  //      uint32_t StreamSizes[NumStreams];
>>>>>>>>> +  //      uint32_t StreamMap[NumStreams][];
>>>>>>>>> +  //    };
>>>>>>>>> +  //
>>>>>>>>> +  //  Empty streams don't consume entries in the StreamMap.
>>>>>>>>> +  for (uint32_t DirectoryBlockAddr : DirectoryBlocks) {
>>>>>>>>> +    uint64_t DirectoryBlockOffset =
>>>>>>>>> +        blockToOffset(DirectoryBlockAddr, SB->BlockSize);
>>>>>>>>> +    auto DirectoryBlock =
>>>>>>>>> +        makeArrayRef(reinterpret_cast<const uint32_t
>>>>>>>>> *>(M.getBufferStart() +
>>>>>>>>> +
>>>>>>>>> DirectoryBlockOffset),
>>>>>>>>> +                     SB->BlockSize /
>>>>>>>>> sizeof(support::ulittle32_t));
>>>>>>>>> +    if (EC = checkOffset(M, DirectoryBlock))
>>>>>>>>> +      return EC;
>>>>>>>>> +
>>>>>>>>> +    // We read data out of the directory four bytes at a time.
>>>>>>>>> Depending on
>>>>>>>>> +    // where we are in the directory, the contents may be: the
>>>>>>>>> number of streams
>>>>>>>>> +    // in the directory, a stream's size, or a block in the
>>>>>>>>> stream map.
>>>>>>>>> +    for (uint32_t Data : DirectoryBlock) {
>>>>>>>>> +      // Don't read beyond the end of the directory.
>>>>>>>>> +      if (DirectoryBytesRead == SB->NumDirectoryBytes)
>>>>>>>>> +        break;
>>>>>>>>> +
>>>>>>>>> +      DirectoryBytesRead += sizeof(Data);
>>>>>>>>> +
>>>>>>>>> +      // This data must be the number of streams if we haven't
>>>>>>>>> seen it yet.
>>>>>>>>> +      if (!SeenNumStreams) {
>>>>>>>>> +        NumStreams = Data;
>>>>>>>>> +        SeenNumStreams = true;
>>>>>>>>> +        continue;
>>>>>>>>> +      }
>>>>>>>>> +      // This data must be a stream size if we have not seen them
>>>>>>>>> all yet.
>>>>>>>>> +      if (Context->StreamSizes.size() < NumStreams) {
>>>>>>>>> +        // It seems like some streams have their set to -1 when
>>>>>>>>> their contents
>>>>>>>>> +        // are not present.  Treat them like empty streams for
>>>>>>>>> now.
>>>>>>>>> +        if (Data == UINT32_MAX)
>>>>>>>>> +          Context->StreamSizes.push_back(0);
>>>>>>>>> +        else
>>>>>>>>> +          Context->StreamSizes.push_back(Data);
>>>>>>>>> +        continue;
>>>>>>>>> +      }
>>>>>>>>> +
>>>>>>>>> +      // This data must be a stream block number if we have seen
>>>>>>>>> all of the
>>>>>>>>> +      // stream sizes.
>>>>>>>>> +      std::vector<uint32_t> *StreamBlocks = nullptr;
>>>>>>>>> +      // Figure out which stream this block number belongs to.
>>>>>>>>> +      while (StreamIdx < NumStreams) {
>>>>>>>>> +        uint64_t NumExpectedStreamBlocks =
>>>>>>>>> +            bytesToBlocks(Context->StreamSizes[StreamIdx],
>>>>>>>>> SB->BlockSize);
>>>>>>>>> +        StreamBlocks = &Context->StreamMap[StreamIdx];
>>>>>>>>> +        if (NumExpectedStreamBlocks > StreamBlocks->size())
>>>>>>>>> +          break;
>>>>>>>>> +        ++StreamIdx;
>>>>>>>>> +      }
>>>>>>>>> +      // It seems this block doesn't belong to any stream?  The
>>>>>>>>> stream is either
>>>>>>>>> +      // corrupt or something more mysterious is going on.
>>>>>>>>> +      if (StreamIdx == NumStreams)
>>>>>>>>> +        return
>>>>>>>>> std::make_error_code(std::errc::illegal_byte_sequence);
>>>>>>>>> +
>>>>>>>>> +      StreamBlocks->push_back(Data);
>>>>>>>>> +    }
>>>>>>>>> +  }
>>>>>>>>> +
>>>>>>>>> +  // We should have read exactly SB->NumDirectoryBytes bytes.
>>>>>>>>> +  assert(DirectoryBytesRead == SB->NumDirectoryBytes);
>>>>>>>>> +  return std::error_code();
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +llvm::ArrayRef<uint32_t> PDBFile::getDirectoryBlockArray() {
>>>>>>>>> +  return makeArrayRef(
>>>>>>>>> +      reinterpret_cast<const uint32_t
>>>>>>>>> *>(Context->Buffer->getBufferStart() +
>>>>>>>>> +                                         getBlockMapOffset()),
>>>>>>>>> +      getNumDirectoryBlocks());
>>>>>>>>> +}
>>>>>>>>>
>>>>>>>>> Added: llvm/trunk/lib/DebugInfo/PDB/Raw/PDBStream.cpp
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/Raw/PDBStream.cpp?rev=267049&view=auto
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/lib/DebugInfo/PDB/Raw/PDBStream.cpp (added)
>>>>>>>>> +++ llvm/trunk/lib/DebugInfo/PDB/Raw/PDBStream.cpp Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -0,0 +1,97 @@
>>>>>>>>> +//===- PDBStream.cpp - Low level interface to a PDB stream
>>>>>>>>> ------*- C++ -*-===//
>>>>>>>>> +//
>>>>>>>>> +//                     The LLVM Compiler Infrastructure
>>>>>>>>> +//
>>>>>>>>> +// This file is distributed under the University of Illinois Open
>>>>>>>>> Source
>>>>>>>>> +// License. See LICENSE.TXT for details.
>>>>>>>>> +//
>>>>>>>>>
>>>>>>>>> +//===----------------------------------------------------------------------===//
>>>>>>>>> +
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/PDBStream.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
>>>>>>>>> +
>>>>>>>>> +using namespace llvm;
>>>>>>>>> +
>>>>>>>>> +static uint64_t bytesToBlocks(uint64_t NumBytes, uint64_t
>>>>>>>>> BlockSize) {
>>>>>>>>> +  return alignTo(NumBytes, BlockSize) / BlockSize;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +static uint64_t blockToOffset(uint64_t BlockNumber, uint64_t
>>>>>>>>> BlockSize) {
>>>>>>>>> +  return BlockNumber * BlockSize;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +PDBStream::PDBStream(uint32_t StreamIdx, const PDBFile &File) :
>>>>>>>>> Pdb(File) {
>>>>>>>>> +  this->StreamLength = Pdb.getStreamByteSize(StreamIdx);
>>>>>>>>> +  this->BlockList = Pdb.getStreamBlockList(StreamIdx);
>>>>>>>>> +  this->Offset = 0;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::error_code PDBStream::readInteger(uint32_t &Dest) {
>>>>>>>>> +  support::detail::packed_endian_specific_integral<uint32_t,
>>>>>>>>> support::little,
>>>>>>>>> +
>>>>>>>>>  support::unaligned>
>>>>>>>>> +      P;
>>>>>>>>> +  if (std::error_code EC = readObject(&P))
>>>>>>>>> +    return EC;
>>>>>>>>> +  Dest = P;
>>>>>>>>> +  return std::error_code();
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::error_code PDBStream::readZeroString(std::string &Dest) {
>>>>>>>>> +  char C;
>>>>>>>>> +  do {
>>>>>>>>> +    readObject(&C);
>>>>>>>>> +    if (C != '\0')
>>>>>>>>> +      Dest.push_back(C);
>>>>>>>>> +  } while (C != '\0');
>>>>>>>>> +  return std::error_code();
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::error_code PDBStream::readBytes(void *Dest, uint32_t Length)
>>>>>>>>> {
>>>>>>>>> +  uint32_t BlockNum = Offset / Pdb.getBlockSize();
>>>>>>>>> +  uint32_t OffsetInBlock = Offset % Pdb.getBlockSize();
>>>>>>>>> +
>>>>>>>>> +  // Make sure we aren't trying to read beyond the end of the
>>>>>>>>> stream.
>>>>>>>>> +  if (this->Offset + Length > this->StreamLength)
>>>>>>>>> +    return std::make_error_code(std::errc::bad_address);
>>>>>>>>> +
>>>>>>>>> +  // Modify the passed in offset to point to the data after the
>>>>>>>>> object.
>>>>>>>>> +  Offset += Length;
>>>>>>>>> +
>>>>>>>>> +  // Handle the contiguous case: the offset + size stays within a
>>>>>>>>> block.
>>>>>>>>> +  if (OffsetInBlock + Length <= Pdb.getBlockSize()) {
>>>>>>>>> +    uint32_t StreamBlockAddr = this->BlockList[BlockNum];
>>>>>>>>> +
>>>>>>>>> +    StringRef Data = Pdb.getBlockData(StreamBlockAddr,
>>>>>>>>> Pdb.getBlockSize());
>>>>>>>>> +    ::memcpy(Dest, Data.data() + OffsetInBlock, Length);
>>>>>>>>> +    return std::error_code();
>>>>>>>>> +  }
>>>>>>>>> +
>>>>>>>>> +  // The non-contiguous case: we will stitch together
>>>>>>>>> non-contiguous chunks
>>>>>>>>> +  uint32_t BytesLeft = Length;
>>>>>>>>> +  uint32_t BytesWritten = 0;
>>>>>>>>> +  char *WriteBuffer = static_cast<char *>(Dest);
>>>>>>>>> +  while (BytesLeft > 0) {
>>>>>>>>> +    uint32_t StreamBlockAddr = this->BlockList[BlockNum];
>>>>>>>>> +    uint64_t StreamBlockOffset =
>>>>>>>>> +        blockToOffset(StreamBlockAddr, Pdb.getBlockSize()) +
>>>>>>>>> OffsetInBlock;
>>>>>>>>> +
>>>>>>>>> +    StringRef Data = Pdb.getBlockData(StreamBlockAddr,
>>>>>>>>> Pdb.getBlockSize());
>>>>>>>>> +
>>>>>>>>> +    const char *ChunkStart = Data.data() + StreamBlockOffset;
>>>>>>>>> +    uint32_t BytesInChunk =
>>>>>>>>> +        std::min(BytesLeft, Pdb.getBlockSize() - OffsetInBlock);
>>>>>>>>> +    ::memcpy(WriteBuffer + BytesWritten, ChunkStart,
>>>>>>>>> BytesInChunk);
>>>>>>>>> +
>>>>>>>>> +    BytesWritten += BytesInChunk;
>>>>>>>>> +    BytesLeft -= BytesInChunk;
>>>>>>>>> +    ++BlockNum;
>>>>>>>>> +    OffsetInBlock = 0;
>>>>>>>>> +  }
>>>>>>>>> +  return std::error_code();
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +void PDBStream::setOffset(uint32_t O) { this->Offset = O; }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBStream::getOffset() const { return this->Offset; }
>>>>>>>>> +
>>>>>>>>> +uint32_t PDBStream::getLength() const { return
>>>>>>>>> this->StreamLength; }
>>>>>>>>>
>>>>>>>>> Added: llvm/trunk/lib/DebugInfo/PDB/Raw/RawSession.cpp
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/Raw/RawSession.cpp?rev=267049&view=auto
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/lib/DebugInfo/PDB/Raw/RawSession.cpp (added)
>>>>>>>>> +++ llvm/trunk/lib/DebugInfo/PDB/Raw/RawSession.cpp Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -0,0 +1,126 @@
>>>>>>>>> +//===- RawSession.cpp - Raw implementation of IPDBSession
>>>>>>>>> -------*- C++ -*-===//
>>>>>>>>> +//
>>>>>>>>> +//                     The LLVM Compiler Infrastructure
>>>>>>>>> +//
>>>>>>>>> +// This file is distributed under the University of Illinois Open
>>>>>>>>> Source
>>>>>>>>> +// License. See LICENSE.TXT for details.
>>>>>>>>> +//
>>>>>>>>>
>>>>>>>>> +//===----------------------------------------------------------------------===//
>>>>>>>>> +
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/RawSession.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/IPDBSourceFile.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/PDBSymbolCompiland.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/PDBSymbolExe.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/PdbFile.h"
>>>>>>>>> +
>>>>>>>>> +#include "llvm/Support/ErrorOr.h"
>>>>>>>>> +#include "llvm/Support/MemoryBuffer.h"
>>>>>>>>> +
>>>>>>>>> +using namespace llvm;
>>>>>>>>> +
>>>>>>>>> +RawSession::RawSession(std::unique_ptr<PDBFile> PdbFile)
>>>>>>>>> +    : Pdb(std::move(PdbFile)) {}
>>>>>>>>> +
>>>>>>>>> +RawSession::~RawSession() {}
>>>>>>>>> +
>>>>>>>>> +PDB_ErrorCode RawSession::createFromPdb(StringRef Path,
>>>>>>>>> +
>>>>>>>>> std::unique_ptr<IPDBSession> &Session) {
>>>>>>>>> +
>>>>>>>>> +  ErrorOr<std::unique_ptr<MemoryBuffer>> ErrorOrBuffer =
>>>>>>>>> +      MemoryBuffer::getFileOrSTDIN(Path, /*FileSize=*/-1,
>>>>>>>>> +
>>>>>>>>>  /*RequiresNullTerminator=*/false);
>>>>>>>>> +
>>>>>>>>> +  std::error_code EC;
>>>>>>>>> +  if (EC = ErrorOrBuffer.getError())
>>>>>>>>> +    return PDB_ErrorCode::CouldNotCreateImpl;
>>>>>>>>> +
>>>>>>>>> +  std::unique_ptr<MemoryBuffer> &Buffer = ErrorOrBuffer.get();
>>>>>>>>> +
>>>>>>>>> +  std::unique_ptr<PDBFile> File(new PDBFile(std::move(Buffer)));
>>>>>>>>> +  if (EC = File->parseFileHeaders())
>>>>>>>>> +    return PDB_ErrorCode::InvalidFileFormat;
>>>>>>>>> +  if (EC = File->parseStreamData())
>>>>>>>>> +    return PDB_ErrorCode::InvalidFileFormat;
>>>>>>>>> +
>>>>>>>>> +  Session.reset(new RawSession(std::move(File)));
>>>>>>>>> +
>>>>>>>>> +  return PDB_ErrorCode::Success;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +PDB_ErrorCode RawSession::createFromExe(StringRef Path,
>>>>>>>>> +
>>>>>>>>> std::unique_ptr<IPDBSession> &Session) {
>>>>>>>>> +  return PDB_ErrorCode::CouldNotCreateImpl;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +uint64_t RawSession::getLoadAddress() const { return 0; }
>>>>>>>>> +
>>>>>>>>> +void RawSession::setLoadAddress(uint64_t Address) {}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<PDBSymbolExe> RawSession::getGlobalScope() const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<PDBSymbol> RawSession::getSymbolById(uint32_t
>>>>>>>>> SymbolId) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<PDBSymbol>
>>>>>>>>> +RawSession::findSymbolByAddress(uint64_t Address, PDB_SymType
>>>>>>>>> Type) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBEnumLineNumbers>
>>>>>>>>> +RawSession::findLineNumbers(const PDBSymbolCompiland &Compiland,
>>>>>>>>> +                            const IPDBSourceFile &File) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBEnumLineNumbers>
>>>>>>>>> +RawSession::findLineNumbersByAddress(uint64_t Address, uint32_t
>>>>>>>>> Length) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBEnumSourceFiles>
>>>>>>>>> +RawSession::findSourceFiles(const PDBSymbolCompiland *Compiland,
>>>>>>>>> +                            llvm::StringRef Pattern,
>>>>>>>>> +                            PDB_NameSearchFlags Flags) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBSourceFile>
>>>>>>>>> +RawSession::findOneSourceFile(const PDBSymbolCompiland *Compiland,
>>>>>>>>> +                              llvm::StringRef Pattern,
>>>>>>>>> +                              PDB_NameSearchFlags Flags) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
>>>>>>>>> +RawSession::findCompilandsForSourceFile(llvm::StringRef Pattern,
>>>>>>>>> +                                        PDB_NameSearchFlags
>>>>>>>>> Flags) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<PDBSymbolCompiland>
>>>>>>>>> +RawSession::findOneCompilandForSourceFile(llvm::StringRef Pattern,
>>>>>>>>> +                                          PDB_NameSearchFlags
>>>>>>>>> Flags) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBEnumSourceFiles>
>>>>>>>>> RawSession::getAllSourceFiles() const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBEnumSourceFiles>
>>>>>>>>> RawSession::getSourceFilesForCompiland(
>>>>>>>>> +    const PDBSymbolCompiland &Compiland) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBSourceFile>
>>>>>>>>> +RawSession::getSourceFileById(uint32_t FileId) const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>> +
>>>>>>>>> +std::unique_ptr<IPDBEnumDataStreams>
>>>>>>>>> RawSession::getDebugStreams() const {
>>>>>>>>> +  return nullptr;
>>>>>>>>> +}
>>>>>>>>>
>>>>>>>>> Modified: llvm/trunk/tools/llvm-pdbdump/BuiltinDumper.h
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbdump/BuiltinDumper.h?rev=267049&r1=267048&r2=267049&view=diff
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/tools/llvm-pdbdump/BuiltinDumper.h (original)
>>>>>>>>> +++ llvm/trunk/tools/llvm-pdbdump/BuiltinDumper.h Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -10,6 +10,7 @@
>>>>>>>>>  #ifndef LLVM_TOOLS_LLVMPDBDUMP_BUILTINDUMPER_H
>>>>>>>>>  #define LLVM_TOOLS_LLVMPDBDUMP_BUILTINDUMPER_H
>>>>>>>>>
>>>>>>>>> +#include "llvm/ADT/StringRef.h"
>>>>>>>>>  #include "llvm/DebugInfo/PDB/PDBSymDumper.h"
>>>>>>>>>
>>>>>>>>>  namespace llvm {
>>>>>>>>>
>>>>>>>>> Modified: llvm/trunk/tools/llvm-pdbdump/llvm-pdbdump.cpp
>>>>>>>>> URL:
>>>>>>>>> http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbdump/llvm-pdbdump.cpp?rev=267049&r1=267048&r2=267049&view=diff
>>>>>>>>>
>>>>>>>>> ==============================================================================
>>>>>>>>> --- llvm/trunk/tools/llvm-pdbdump/llvm-pdbdump.cpp (original)
>>>>>>>>> +++ llvm/trunk/tools/llvm-pdbdump/llvm-pdbdump.cpp Thu Apr 21
>>>>>>>>> 15:58:35 2016
>>>>>>>>> @@ -35,6 +35,9 @@
>>>>>>>>>  #include "llvm/DebugInfo/PDB/PDBSymbolExe.h"
>>>>>>>>>  #include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
>>>>>>>>>  #include "llvm/DebugInfo/PDB/PDBSymbolThunk.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/PDBStream.h"
>>>>>>>>> +#include "llvm/DebugInfo/PDB/Raw/RawSession.h"
>>>>>>>>>  #include "llvm/Support/CommandLine.h"
>>>>>>>>>  #include "llvm/Support/ConvertUTF.h"
>>>>>>>>>  #include "llvm/Support/FileSystem.h"
>>>>>>>>> @@ -43,8 +46,8 @@
>>>>>>>>>  #include "llvm/Support/MemoryBuffer.h"
>>>>>>>>>  #include "llvm/Support/PrettyStackTrace.h"
>>>>>>>>>  #include "llvm/Support/Process.h"
>>>>>>>>> -#include "llvm/Support/raw_ostream.h"
>>>>>>>>>  #include "llvm/Support/Signals.h"
>>>>>>>>> +#include "llvm/Support/raw_ostream.h"
>>>>>>>>>
>>>>>>>>>  #if defined(HAVE_DIA_SDK)
>>>>>>>>>  #ifndef NOMINMAX
>>>>>>>>> @@ -152,186 +155,32 @@ static void reportError(StringRef Input,
>>>>>>>>>    reportError(Input, EC.message());
>>>>>>>>>  }
>>>>>>>>>
>>>>>>>>> -static std::error_code checkOffset(MemoryBufferRef M, uintptr_t
>>>>>>>>> Addr,
>>>>>>>>> -                                   const uint64_t Size) {
>>>>>>>>> -  if (Addr + Size < Addr || Addr + Size < Size ||
>>>>>>>>> -      Addr + Size > uintptr_t(M.getBufferEnd()) ||
>>>>>>>>> -      Addr < uintptr_t(M.getBufferStart())) {
>>>>>>>>> -    return std::make_error_code(std::errc::bad_address);
>>>>>>>>> -  }
>>>>>>>>> -  return std::error_code();
>>>>>>>>> -}
>>>>>>>>> -
>>>>>>>>> -template <typename T>
>>>>>>>>> -static std::error_code checkOffset(MemoryBufferRef M, ArrayRef<T>
>>>>>>>>> AR) {
>>>>>>>>> -  return checkOffset(M, uintptr_t(AR.data()), (uint64_t)AR.size()
>>>>>>>>> * sizeof(T));
>>>>>>>>> -}
>>>>>>>>> -
>>>>>>>>> -static std::error_code checkOffset(MemoryBufferRef M, StringRef
>>>>>>>>> SR) {
>>>>>>>>> -  return checkOffset(M, uintptr_t(SR.data()), SR.size());
>>>>>>>>> -}
>>>>>>>>> -
>>>>>>>>> -// Sets Obj unless any bytes in [addr, addr + size) fall outsize
>>>>>>>>> of m.
>>>>>>>>> -// Returns unexpected_eof if error.
>>>>>>>>> -template <typename T>
>>>>>>>>> -static std::error_code getObject(const T *&Obj, MemoryBufferRef M,
>>>>>>>>> -                                 const void *Ptr,
>>>>>>>>> -                                 const uint64_t Size = sizeof(T))
>>>>>>>>> {
>>>>>>>>> -  uintptr_t Addr = uintptr_t(Ptr);
>>>>>>>>> -  if (std::error_code EC = checkOffset(M, Addr, Size))
>>>>>>>>> -    return EC;
>>>>>>>>> -  Obj = reinterpret_cast<const T *>(Addr);
>>>>>>>>> -  return std::error_code();
>>>>>>>>> -}
>>>>>>>>> -
>>>>>>>>> -static uint64_t bytesToBlocks(uint64_t NumBytes, uint64_t
>>>>>>>>> BlockSize) {
>>>>>>>>> -  return alignTo(NumBytes, BlockSize) / BlockSize;
>>>>>>>>> -}
>>>>>>>>> -
>>>>>>>>> -static uint64_t blockToOffset(uint64_t BlockNumber, uint64_t
>>>>>>>>> BlockSize) {
>>>>>>>>> -  return BlockNumber * BlockSize;
>>>>>>>>> -}
>>>>>>>>> -
>>>>>>>>> -struct PDBStructureContext {
>>>>>>>>> -  const PDB::SuperBlock *SB;
>>>>>>>>> -  MemoryBufferRef M;
>>>>>>>>> -  std::vector<uint32_t> StreamSizes;
>>>>>>>>> -  DenseMap<uint32_t, std::vector<uint32_t>> StreamMap;
>>>>>>>>> -
>>>>>>>>> -  SmallVector<char, 512> Scratch;
>>>>>>>>> -
>>>>>>>>> -  // getObject tries to stitch together non-contiguous blocks
>>>>>>>>> into a contiguous
>>>>>>>>> -  // value.  The storage for the value comes from the memory
>>>>>>>>> mapped file if the
>>>>>>>>> -  // memory would be contiguous.  Otherwise, it uses 'Scratch' to
>>>>>>>>> buffer the
>>>>>>>>> -  // data.
>>>>>>>>> -  template <typename T>
>>>>>>>>> -  void getObject(const T *&Obj, uint32_t StreamIdx, uint32_t
>>>>>>>>> &Offset) {
>>>>>>>>> -    // Make sure the stream index is valid.
>>>>>>>>> -    auto StreamBlockI = StreamMap.find(StreamIdx);
>>>>>>>>> -    if (StreamBlockI == StreamMap.end())
>>>>>>>>> -      reportError(M.getBufferIdentifier(),
>>>>>>>>> -                  std::make_error_code(std::errc::bad_address));
>>>>>>>>> -
>>>>>>>>> -    auto &StreamBlocks = StreamBlockI->second;
>>>>>>>>> -    uint32_t BlockNum = Offset / SB->BlockSize;
>>>>>>>>> -    uint32_t OffsetInBlock = Offset % SB->BlockSize;
>>>>>>>>> -
>>>>>>>>> -    // Make sure we aren't trying to read beyond the end of the
>>>>>>>>> stream.
>>>>>>>>> -    if (Offset + sizeof(T) > StreamSizes[StreamIdx])
>>>>>>>>> -      reportError(M.getBufferIdentifier(),
>>>>>>>>> -                  std::make_error_code(std::errc::bad_address));
>>>>>>>>> -
>>>>>>>>> -    // Modify the passed in offset to point to the data after the
>>>>>>>>> object.
>>>>>>>>> -    Offset += sizeof(T);
>>>>>>>>> -
>>>>>>>>> -    // Handle the contiguous case: the offset + size stays within
>>>>>>>>> a block.
>>>>>>>>> -    if (OffsetInBlock + sizeof(T) <= SB->BlockSize) {
>>>>>>>>> -      uint32_t StreamBlockAddr = StreamBlocks[BlockNum];
>>>>>>>>> -      uint64_t StreamBlockOffset =
>>>>>>>>> -          blockToOffset(StreamBlockAddr, SB->BlockSize) +
>>>>>>>>> OffsetInBlock;
>>>>>>>>> -      // Return a pointer to the memory buffer.
>>>>>>>>> -      Obj = reinterpret_cast<const T *>(M.getBufferStart() +
>>>>>>>>> StreamBlockOffset);
>>>>>>>>> -      return;
>>>>>>>>> -    }
>>>>>>>>> -
>>>>>>>>> -    // The non-contiguous case: we will stitch together
>>>>>>>>> non-contiguous chunks
>>>>>>>>> -    // into the scratch buffer.
>>>>>>>>> -    Scratch.clear();
>>>>>>>>> -
>>>>>>>>> -    uint32_t BytesLeft = sizeof(T);
>>>>>>>>> -    while (BytesLeft > 0) {
>>>>>>>>> -      uint32_t StreamBlockAddr = StreamBlocks[BlockNum];
>>>>>>>>> -      uint64_t StreamBlockOffset =
>>>>>>>>> -          blockToOffset(StreamBlockAddr, SB->BlockSize) +
>>>>>>>>> OffsetInBlock;
>>>>>>>>> -
>>>>>>>>> -      const char *ChunkStart =
>>>>>>>>> -          M.getBufferStart() + StreamBlockOffset;
>>>>>>>>> -      uint32_t BytesInChunk =
>>>>>>>>> -          std::min(BytesLeft, SB->BlockSize - OffsetInBlock);
>>>>>>>>> -      Scratch.append(ChunkStart, ChunkStart + BytesInChunk);
>>>>>>>>> -
>>>>>>>>> -      BytesLeft -= BytesInChunk;
>>>>>>>>> -      ++BlockNum;
>>>>>>>>> -      OffsetInBlock = 0;
>>>>>>>>> -    }
>>>>>>>>> -
>>>>>>>>> -    // Return a pointer to the scratch buffer.
>>>>>>>>> -    Obj = reinterpret_cast<const T *>(Scratch.data());
>>>>>>>>> -  }
>>>>>>>>> -
>>>>>>>>> -  template <typename T>
>>>>>>>>> -  T getInt(uint32_t StreamIdx, uint32_t &Offset) {
>>>>>>>>> -    const support::detail::packed_endian_specific_integral<
>>>>>>>>> -        T, support::little, support::unaligned> *P;
>>>>>>>>> -    getObject(P, StreamIdx, Offset);
>>>>>>>>> -    return *P;
>>>>>>>>> -  }
>>>>>>>>> -
>>>>>>>>> -  template <typename T>
>>>>>>>>> -  T getObject(uint32_t StreamIdx, uint32_t &Offset) {
>>>>>>>>> -    const T *P;
>>>>>>>>> -    getObject(P, StreamIdx, Offset);
>>>>>>>>> -    return *P;
>>>>>>>>> -  }
>>>>>>>>> -};
>>>>>>>>> -
>>>>>>>>> -static void dumpStructure(MemoryBufferRef M) {
>>>>>>>>> -  const PDB::SuperBlock *SB;
>>>>>>>>> -
>>>>>>>>> -  auto Error = [&](std::error_code EC) {
>>>>>>>>> -    if (EC)
>>>>>>>>> -      reportError(M.getBufferIdentifier(), EC);
>>>>>>>>> -  };
>>>>>>>>> -
>>>>>>>>> -  Error(getObject(SB, M, M.getBufferStart()));
>>>>>>>>> +static void dumpStructure(RawSession &RS) {
>>>>>>>>> +  PDBFile &File = RS.getPDBFile();
>>>>>>>>>
>>>>>>>>>    if (opts::DumpHeaders) {
>>>>>>>>> -    outs() << "BlockSize: " << SB->BlockSize << '\n';
>>>>>>>>> -    outs() << "Unknown0: " << SB->Unknown0 << '\n';
>>>>>>>>> -    outs() << "NumBlocks: " << SB->NumBlocks << '\n';
>>>>>>>>> -    outs() << "NumDirectoryBytes: " << SB->NumDirectoryBytes <<
>>>>>>>>> '\n';
>>>>>>>>> -    outs() << "Unknown1: " << SB->Unknown1 << '\n';
>>>>>>>>> -    outs() << "BlockMapAddr: " << SB->BlockMapAddr << '\n';
>>>>>>>>> +    outs() << "BlockSize: " << File.getBlockSize() << '\n';
>>>>>>>>> +    outs() << "Unknown0: " << File.getUnknown0() << '\n';
>>>>>>>>> +    outs() << "NumBlocks: " << File.getBlockCount() << '\n';
>>>>>>>>> +    outs() << "NumDirectoryBytes: " <<
>>>>>>>>> File.getNumDirectoryBytes() << '\n';
>>>>>>>>> +    outs() << "Unknown1: " << File.getUnknown1() << '\n';
>>>>>>>>> +    outs() << "BlockMapAddr: " << File.getBlockMapIndex() << '\n';
>>>>>>>>>    }
>>>>>>>>>
>>>>>>>>> -  // We don't support blocksizes which aren't a multiple of four
>>>>>>>>> bytes.
>>>>>>>>> -  if (SB->BlockSize % sizeof(support::ulittle32_t) != 0)
>>>>>>>>> -    Error(std::make_error_code(std::errc::not_supported));
>>>>>>>>> -
>>>>>>>>> -  // We don't support directories whose sizes aren't a multiple
>>>>>>>>> of four bytes.
>>>>>>>>> -  if (SB->NumDirectoryBytes % sizeof(support::ulittle32_t) != 0)
>>>>>>>>> -    Error(std::make_error_code(std::errc::not_supported));
>>>>>>>>> -
>>>>>>>>> -  // The number of blocks which comprise the directory is a
>>>>>>>>> simple function of
>>>>>>>>> -  // the number of bytes it contains.
>>>>>>>>> -  uint64_t NumDirectoryBlocks =
>>>>>>>>> -      bytesToBlocks(SB->NumDirectoryBytes, SB->BlockSize);
>>>>>>>>>    if (opts::DumpHeaders)
>>>>>>>>> -    outs() << "NumDirectoryBlocks: " << NumDirectoryBlocks <<
>>>>>>>>> '\n';
>>>>>>>>> +    outs() << "NumDirectoryBlocks: " <<
>>>>>>>>> File.getNumDirectoryBlocks() << '\n';
>>>>>>>>>
>>>>>>>>> -  // The block map, as we understand it, is a block which
>>>>>>>>> consists of a list of
>>>>>>>>> -  // block numbers.
>>>>>>>>> -  // It is unclear what would happen if the number of blocks
>>>>>>>>> couldn't fit on a
>>>>>>>>> -  // single block.
>>>>>>>>> -  if (NumDirectoryBlocks > SB->BlockSize /
>>>>>>>>> sizeof(support::ulittle32_t))
>>>>>>>>> -    Error(std::make_error_code(std::errc::illegal_byte_sequence));
>>>>>>>>> -
>>>>>>>>> -  uint64_t BlockMapOffset = (uint64_t)SB->BlockMapAddr *
>>>>>>>>> SB->BlockSize;
>>>>>>>>>    if (opts::DumpHeaders)
>>>>>>>>> -    outs() << "BlockMapOffset: " << BlockMapOffset << '\n';
>>>>>>>>> +    outs() << "BlockMapOffset: " << File.getBlockMapOffset() <<
>>>>>>>>> '\n';
>>>>>>>>>
>>>>>>>>>    // The directory is not contiguous.  Instead, the block map
>>>>>>>>> contains a
>>>>>>>>>    // contiguous list of block numbers whose contents, when
>>>>>>>>> concatenated in
>>>>>>>>>    // order, make up the directory.
>>>>>>>>> -  auto DirectoryBlocks =
>>>>>>>>> -      makeArrayRef(reinterpret_cast<const support::ulittle32_t *>(
>>>>>>>>> -                       M.getBufferStart() + BlockMapOffset),
>>>>>>>>> -                   NumDirectoryBlocks);
>>>>>>>>> -  Error(checkOffset(M, DirectoryBlocks));
>>>>>>>>> +  auto DirectoryBlocks = File.getDirectoryBlockArray();
>>>>>>>>>
>>>>>>>>>    if (opts::DumpHeaders) {
>>>>>>>>>      outs() << "DirectoryBlocks: [";
>>>>>>>>> -    for (const support::ulittle32_t &DirectoryBlockAddr :
>>>>>>>>> DirectoryBlocks) {
>>>>>>>>> +    for (const uint32_t &DirectoryBlockAddr : DirectoryBlocks) {
>>>>>>>>>        if (&DirectoryBlockAddr != &DirectoryBlocks.front())
>>>>>>>>>          outs() << ", ";
>>>>>>>>>        outs() << DirectoryBlockAddr;
>>>>>>>>> @@ -339,96 +188,23 @@ static void dumpStructure(MemoryBufferRe
>>>>>>>>>      outs() << "]\n";
>>>>>>>>>    }
>>>>>>>>>
>>>>>>>>> -  bool SeenNumStreams = false;
>>>>>>>>> -  uint32_t NumStreams = 0;
>>>>>>>>> -  uint32_t StreamIdx = 0;
>>>>>>>>> -  uint64_t DirectoryBytesRead = 0;
>>>>>>>>> -  PDBStructureContext Ctx;
>>>>>>>>> -  Ctx.SB = SB;
>>>>>>>>> -  Ctx.M = M;
>>>>>>>>> -  // The structure of the directory is as follows:
>>>>>>>>> -  //    struct PDBDirectory {
>>>>>>>>> -  //      uint32_t NumStreams;
>>>>>>>>> -  //      uint32_t StreamSizes[NumStreams];
>>>>>>>>> -  //      uint32_t StreamMap[NumStreams][];
>>>>>>>>> -  //    };
>>>>>>>>> -  //
>>>>>>>>> -  //  Empty streams don't consume entries in the StreamMap.
>>>>>>>>> -  for (uint32_t DirectoryBlockAddr : DirectoryBlocks) {
>>>>>>>>> -    uint64_t DirectoryBlockOffset =
>>>>>>>>> -        blockToOffset(DirectoryBlockAddr, SB->BlockSize);
>>>>>>>>> -    auto DirectoryBlock =
>>>>>>>>> -        makeArrayRef(reinterpret_cast<const support::ulittle32_t
>>>>>>>>> *>(
>>>>>>>>> -                         M.getBufferStart() +
>>>>>>>>> DirectoryBlockOffset),
>>>>>>>>> -                     SB->BlockSize /
>>>>>>>>> sizeof(support::ulittle32_t));
>>>>>>>>> -    Error(checkOffset(M, DirectoryBlock));
>>>>>>>>> -
>>>>>>>>> -    // We read data out of the directory four bytes at a time.
>>>>>>>>> Depending on
>>>>>>>>> -    // where we are in the directory, the contents may be: the
>>>>>>>>> number of streams
>>>>>>>>> -    // in the directory, a stream's size, or a block in the
>>>>>>>>> stream map.
>>>>>>>>> -    for (uint32_t Data : DirectoryBlock) {
>>>>>>>>> -      // Don't read beyond the end of the directory.
>>>>>>>>> -      if (DirectoryBytesRead == SB->NumDirectoryBytes)
>>>>>>>>> -        break;
>>>>>>>>> -
>>>>>>>>> -      DirectoryBytesRead += sizeof(Data);
>>>>>>>>> -
>>>>>>>>> -      // This data must be the number of streams if we haven't
>>>>>>>>> seen it yet.
>>>>>>>>> -      if (!SeenNumStreams) {
>>>>>>>>> -        NumStreams = Data;
>>>>>>>>> -        SeenNumStreams = true;
>>>>>>>>> -        continue;
>>>>>>>>> -      }
>>>>>>>>> -      // This data must be a stream size if we have not seen them
>>>>>>>>> all yet.
>>>>>>>>> -      if (Ctx.StreamSizes.size() < NumStreams) {
>>>>>>>>> -        // It seems like some streams have their set to -1 when
>>>>>>>>> their contents
>>>>>>>>> -        // are not present.  Treat them like empty streams for
>>>>>>>>> now.
>>>>>>>>> -        if (Data == UINT32_MAX)
>>>>>>>>> -          Ctx.StreamSizes.push_back(0);
>>>>>>>>> -        else
>>>>>>>>> -          Ctx.StreamSizes.push_back(Data);
>>>>>>>>> -        continue;
>>>>>>>>> -      }
>>>>>>>>> -
>>>>>>>>> -      // This data must be a stream block number if we have seen
>>>>>>>>> all of the
>>>>>>>>> -      // stream sizes.
>>>>>>>>> -      std::vector<uint32_t> *StreamBlocks = nullptr;
>>>>>>>>> -      // Figure out which stream this block number belongs to.
>>>>>>>>> -      while (StreamIdx < NumStreams) {
>>>>>>>>> -        uint64_t NumExpectedStreamBlocks =
>>>>>>>>> -            bytesToBlocks(Ctx.StreamSizes[StreamIdx],
>>>>>>>>> SB->BlockSize);
>>>>>>>>> -        StreamBlocks = &Ctx.StreamMap[StreamIdx];
>>>>>>>>> -        if (NumExpectedStreamBlocks > StreamBlocks->size())
>>>>>>>>> -          break;
>>>>>>>>> -        ++StreamIdx;
>>>>>>>>> -      }
>>>>>>>>> -      // It seems this block doesn't belong to any stream?  The
>>>>>>>>> stream is either
>>>>>>>>> -      // corrupt or something more mysterious is going on.
>>>>>>>>> -      if (StreamIdx == NumStreams)
>>>>>>>>> -
>>>>>>>>> Error(std::make_error_code(std::errc::illegal_byte_sequence));
>>>>>>>>> -
>>>>>>>>> -      StreamBlocks->push_back(Data);
>>>>>>>>> -    }
>>>>>>>>> -  }
>>>>>>>>> -
>>>>>>>>> -  // We should have read exactly SB->NumDirectoryBytes bytes.
>>>>>>>>> -  assert(DirectoryBytesRead == SB->NumDirectoryBytes);
>>>>>>>>> -
>>>>>>>>>    if (opts::DumpHeaders)
>>>>>>>>> -    outs() << "NumStreams: " << NumStreams << '\n';
>>>>>>>>> -  if (opts::DumpStreamSizes)
>>>>>>>>> -    for (uint32_t StreamIdx = 0; StreamIdx < NumStreams;
>>>>>>>>> ++StreamIdx)
>>>>>>>>> +    outs() << "NumStreams: " << File.getNumStreams() << '\n';
>>>>>>>>> +  uint32_t StreamCount = File.getNumStreams();
>>>>>>>>> +  if (opts::DumpStreamSizes) {
>>>>>>>>> +    for (uint32_t StreamIdx = 0; StreamCount; ++StreamIdx)
>>>>>>>>>        outs() << "StreamSizes[" << StreamIdx
>>>>>>>>> -             << "]: " << Ctx.StreamSizes[StreamIdx] << '\n';
>>>>>>>>> +             << "]: " << File.getStreamByteSize(StreamIdx) <<
>>>>>>>>> '\n';
>>>>>>>>> +  }
>>>>>>>>>
>>>>>>>>>    if (opts::DumpStreamBlocks) {
>>>>>>>>> -    for (uint32_t StreamIdx = 0; StreamIdx < NumStreams;
>>>>>>>>> ++StreamIdx) {
>>>>>>>>> +    for (uint32_t StreamIdx = 0; StreamIdx < StreamCount;
>>>>>>>>> ++StreamIdx) {
>>>>>>>>>        outs() << "StreamBlocks[" << StreamIdx << "]: [";
>>>>>>>>> -      std::vector<uint32_t> &StreamBlocks =
>>>>>>>>> Ctx.StreamMap[StreamIdx];
>>>>>>>>> -      for (uint32_t &StreamBlock : StreamBlocks) {
>>>>>>>>> -        if (&StreamBlock != &StreamBlocks.front())
>>>>>>>>> +      auto StreamBlocks = File.getStreamBlockList(StreamIdx);
>>>>>>>>> +      for (size_t i = 0; i < StreamBlocks.size(); ++i) {
>>>>>>>>> +        if (i != 0)
>>>>>>>>>            outs() << ", ";
>>>>>>>>> -        outs() << StreamBlock;
>>>>>>>>> +        outs() << StreamBlocks[i];
>>>>>>>>>        }
>>>>>>>>>        outs() << "]\n";
>>>>>>>>>      }
>>>>>>>>> @@ -437,103 +213,107 @@ static void dumpStructure(MemoryBufferRe
>>>>>>>>>    StringRef DumpStreamStr = opts::DumpStreamData;
>>>>>>>>>    uint32_t DumpStreamNum;
>>>>>>>>>    if (!DumpStreamStr.getAsInteger(/*Radix=*/0U, DumpStreamNum) &&
>>>>>>>>> -      DumpStreamNum < NumStreams) {
>>>>>>>>> +      DumpStreamNum < StreamCount) {
>>>>>>>>>      uint32_t StreamBytesRead = 0;
>>>>>>>>> -    uint32_t StreamSize = Ctx.StreamSizes[DumpStreamNum];
>>>>>>>>> -    std::vector<uint32_t> &StreamBlocks =
>>>>>>>>> Ctx.StreamMap[DumpStreamNum];
>>>>>>>>> -    for (uint32_t &StreamBlockAddr : StreamBlocks) {
>>>>>>>>> -      uint64_t StreamBlockOffset = blockToOffset(StreamBlockAddr,
>>>>>>>>> SB->BlockSize);
>>>>>>>>> +    uint32_t StreamSize = File.getStreamByteSize(DumpStreamNum);
>>>>>>>>> +    auto StreamBlocks = File.getStreamBlockList(DumpStreamNum);
>>>>>>>>> +
>>>>>>>>> +    for (uint32_t StreamBlockAddr : StreamBlocks) {
>>>>>>>>>        uint32_t BytesLeftToReadInStream = StreamSize -
>>>>>>>>> StreamBytesRead;
>>>>>>>>>        if (BytesLeftToReadInStream == 0)
>>>>>>>>>          break;
>>>>>>>>>
>>>>>>>>>        uint32_t BytesToReadInBlock = std::min(
>>>>>>>>> -          BytesLeftToReadInStream,
>>>>>>>>> static_cast<uint32_t>(SB->BlockSize));
>>>>>>>>> +          BytesLeftToReadInStream,
>>>>>>>>> static_cast<uint32_t>(File.getBlockSize()));
>>>>>>>>>        auto StreamBlockData =
>>>>>>>>> -          StringRef(M.getBufferStart() + StreamBlockOffset,
>>>>>>>>> BytesToReadInBlock);
>>>>>>>>> -      Error(checkOffset(M, StreamBlockData));
>>>>>>>>> +          File.getBlockData(StreamBlockAddr, BytesToReadInBlock);
>>>>>>>>>
>>>>>>>>>        outs() << StreamBlockData;
>>>>>>>>>        StreamBytesRead += StreamBlockData.size();
>>>>>>>>>      }
>>>>>>>>>    }
>>>>>>>>>
>>>>>>>>> -  uint32_t Offset = 0;
>>>>>>>>> -
>>>>>>>>>    // Stream 1 starts with the following header:
>>>>>>>>>    //   uint32_t Version;
>>>>>>>>>    //   uint32_t Signature;
>>>>>>>>>    //   uint32_t Age;
>>>>>>>>>    //   GUID Guid;
>>>>>>>>> -  auto Version = Ctx.getInt<uint32_t>(/*PDBStream=*/1, Offset);
>>>>>>>>> -  outs() << "Version: " << Version << '\n';
>>>>>>>>> +  PDBStream Stream1(1, File);
>>>>>>>>> +  uint32_t Version;
>>>>>>>>> +  uint32_t Signature;
>>>>>>>>> +  uint32_t Age;
>>>>>>>>> +  PDB_UniqueId Guid;
>>>>>>>>>
>>>>>>>>> +  Stream1.readInteger(Version);
>>>>>>>>> +  outs() << "Version: " << Version << '\n';
>>>>>>>>>    // PDB's with versions before PDBImpvVC70 might not have the
>>>>>>>>> Guid field, we
>>>>>>>>>    // don't support them.
>>>>>>>>>    if (Version < 20000404)
>>>>>>>>> -    Error(std::make_error_code(std::errc::not_supported));
>>>>>>>>> +    reportError("",
>>>>>>>>> std::make_error_code(std::errc::not_supported));
>>>>>>>>>
>>>>>>>>>    // This appears to be the time the PDB was last opened by an
>>>>>>>>> MSVC tool?
>>>>>>>>>    // It is definitely a timestamp of some sort.
>>>>>>>>> -  auto Signature = Ctx.getInt<uint32_t>(/*PDBStream=*/1, Offset);
>>>>>>>>> +  Stream1.readInteger(Signature);
>>>>>>>>>    outs() << "Signature: ";
>>>>>>>>>    outs().write_hex(Signature) << '\n';
>>>>>>>>>
>>>>>>>>>    // This appears to be a number which is used to determine that
>>>>>>>>> the PDB is kept
>>>>>>>>>    // in sync with the EXE.
>>>>>>>>> -  auto Age = Ctx.getInt<uint32_t>(/*PDBStream=*/1, Offset);
>>>>>>>>> +  Stream1.readInteger(Age);
>>>>>>>>>    outs() << "Age: " << Age << '\n';
>>>>>>>>>
>>>>>>>>>    // I'm not sure what the purpose of the GUID is.
>>>>>>>>> -  using GuidTy = char[16];
>>>>>>>>> -  const GuidTy *Guid;
>>>>>>>>> -  Ctx.getObject(Guid, /*PDBStream=*/1, Offset);
>>>>>>>>> -  outs() << "Guid: ";
>>>>>>>>> -  for (char C : *Guid)
>>>>>>>>> -    outs().write_hex(C & 0xff) << ' ';
>>>>>>>>> -  outs() << '\n';
>>>>>>>>> +  Stream1.readObject(&Guid);
>>>>>>>>> +  outs() << "Guid: " << Guid << '\n';
>>>>>>>>>
>>>>>>>>>    // This is some sort of weird string-set/hash table encoded in
>>>>>>>>> the stream.
>>>>>>>>>    // It starts with the number of bytes in the table.
>>>>>>>>> -  auto NumberOfBytes = Ctx.getInt<uint32_t>(/*PDBStream=*/1,
>>>>>>>>> Offset);
>>>>>>>>> +  uint32_t NumberOfBytes;
>>>>>>>>> +  Stream1.readInteger(NumberOfBytes);
>>>>>>>>>    outs() << "NumberOfBytes: " << NumberOfBytes << '\n';
>>>>>>>>>
>>>>>>>>>    // Following that field is the starting offset of strings in
>>>>>>>>> the name table.
>>>>>>>>> -  uint32_t StringsOffset = Offset;
>>>>>>>>> -  Offset += NumberOfBytes;
>>>>>>>>> +  uint32_t StringsOffset = Stream1.getOffset();
>>>>>>>>> +  Stream1.setOffset(StringsOffset + NumberOfBytes);
>>>>>>>>>
>>>>>>>>>    // This appears to be equivalent to the total number of strings
>>>>>>>>> *actually*
>>>>>>>>>    // in the name table.
>>>>>>>>> -  auto HashSize = Ctx.getInt<uint32_t>(/*PDBStream=*/1, Offset);
>>>>>>>>> +  uint32_t HashSize;
>>>>>>>>> +  Stream1.readInteger(HashSize);
>>>>>>>>>    outs() << "HashSize: " << HashSize << '\n';
>>>>>>>>>
>>>>>>>>>    // This appears to be an upper bound on the number of strings
>>>>>>>>> in the name
>>>>>>>>>    // table.
>>>>>>>>> -  auto MaxNumberOfStrings = Ctx.getInt<uint32_t>(/*PDBStream=*/1,
>>>>>>>>> Offset);
>>>>>>>>> +  uint32_t MaxNumberOfStrings;
>>>>>>>>> +  Stream1.readInteger(MaxNumberOfStrings);
>>>>>>>>>    outs() << "MaxNumberOfStrings: " << MaxNumberOfStrings << '\n';
>>>>>>>>>
>>>>>>>>>    // This appears to be a hash table which uses bitfields to
>>>>>>>>> determine whether
>>>>>>>>>    // or not a bucket is 'present'.
>>>>>>>>> -  auto NumPresentWords = Ctx.getInt<uint32_t>(/*PDBStream=*/1,
>>>>>>>>> Offset);
>>>>>>>>> +  uint32_t NumPresentWords;
>>>>>>>>> +  Stream1.readInteger(NumPresentWords);
>>>>>>>>>    outs() << "NumPresentWords: " << NumPresentWords << '\n';
>>>>>>>>>
>>>>>>>>>    // Store all the 'present' bits in a vector for later
>>>>>>>>> processing.
>>>>>>>>>    SmallVector<uint32_t, 1> PresentWords;
>>>>>>>>>    for (uint32_t I = 0; I != NumPresentWords; ++I) {
>>>>>>>>> -    auto Word = Ctx.getInt<uint32_t>(/*PDBStream=*/1, Offset);
>>>>>>>>> +    uint32_t Word;
>>>>>>>>> +    Stream1.readInteger(Word);
>>>>>>>>>      PresentWords.push_back(Word);
>>>>>>>>>      outs() << "Word: " << Word << '\n';
>>>>>>>>>    }
>>>>>>>>>
>>>>>>>>>    // This appears to be a hash table which uses bitfields to
>>>>>>>>> determine whether
>>>>>>>>>    // or not a bucket is 'deleted'.
>>>>>>>>> -  auto NumDeletedWords = Ctx.getInt<uint32_t>(/*PDBStream=*/1,
>>>>>>>>> Offset);
>>>>>>>>> +  uint32_t NumDeletedWords;
>>>>>>>>> +  Stream1.readInteger(NumDeletedWords);
>>>>>>>>>    outs() << "NumDeletedWords: " << NumDeletedWords << '\n';
>>>>>>>>>
>>>>>>>>>    // Store all the 'deleted' bits in a vector for later
>>>>>>>>> processing.
>>>>>>>>>    SmallVector<uint32_t, 1> DeletedWords;
>>>>>>>>>    for (uint32_t I = 0; I != NumDeletedWords; ++I) {
>>>>>>>>> -    auto Word = Ctx.getInt<uint32_t>(/*PDBStream=*/1, Offset);
>>>>>>>>> +    uint32_t Word;
>>>>>>>>> +    Stream1.readInteger(Word);
>>>>>>>>>      DeletedWords.push_back(Word);
>>>>>>>>>      outs() << "Word: " << Word << '\n';
>>>>>>>>>    }
>>>>>>>>> @@ -554,26 +334,25 @@ static void dumpStructure(MemoryBufferRe
>>>>>>>>>
>>>>>>>>>      // This appears to be an offset relative to the start of the
>>>>>>>>> strings.
>>>>>>>>>      // It tells us where the null-terminated string begins.
>>>>>>>>> -    auto NameOffset = Ctx.getInt<uint32_t>(/*PDBStream=*/1,
>>>>>>>>> Offset);
>>>>>>>>> +    uint32_t NameOffset;
>>>>>>>>> +    Stream1.readInteger(NameOffset);
>>>>>>>>>      outs() << "NameOffset: " << NameOffset << '\n';
>>>>>>>>>
>>>>>>>>>      // This appears to be a stream number into the stream
>>>>>>>>> directory.
>>>>>>>>> -    auto NameIndex = Ctx.getInt<uint32_t>(/*PDBStream=*/1,
>>>>>>>>> Offset);
>>>>>>>>> +    uint32_t NameIndex;
>>>>>>>>> +    Stream1.readInteger(NameIndex);
>>>>>>>>>      outs() << "NameIndex: " << NameIndex << '\n';
>>>>>>>>>
>>>>>>>>>      // Compute the offset of the start of the string relative to
>>>>>>>>> the stream.
>>>>>>>>>      uint32_t StringOffset = StringsOffset + NameOffset;
>>>>>>>>> -
>>>>>>>>> +    uint32_t OldOffset = Stream1.getOffset();
>>>>>>>>>      // Pump out our c-string from the stream.
>>>>>>>>> -    SmallString<8> Str;
>>>>>>>>> -    char C;
>>>>>>>>> -    do {
>>>>>>>>> -      C = Ctx.getObject<char>(/*PDBStream=*/1, StringOffset);
>>>>>>>>> -      if (C != '\0')
>>>>>>>>> -        Str += C;
>>>>>>>>> -    } while (C != '\0');
>>>>>>>>> +    std::string Str;
>>>>>>>>> +    Stream1.setOffset(StringOffset);
>>>>>>>>> +    Stream1.readZeroString(Str);
>>>>>>>>>      outs() << "String: " << Str << "\n\n";
>>>>>>>>>
>>>>>>>>> +    Stream1.setOffset(OldOffset);
>>>>>>>>>      // Add this to a string-map from name to stream number.
>>>>>>>>>      NamedStreams.insert({Str, NameIndex});
>>>>>>>>>    }
>>>>>>>>> @@ -581,45 +360,38 @@ static void dumpStructure(MemoryBufferRe
>>>>>>>>>    // Let's try to dump out the named stream "/names".
>>>>>>>>>    auto NameI = NamedStreams.find("/names");
>>>>>>>>>    if (NameI != NamedStreams.end()) {
>>>>>>>>> -    uint32_t NameStream = NameI->second;
>>>>>>>>> -    outs() << "NameStream: " << NameStream << '\n';
>>>>>>>>> -
>>>>>>>>> -    uint32_t NameStreamOffset = 0;
>>>>>>>>> +    PDBStream NameStream(NameI->second, File);
>>>>>>>>> +    outs() << "NameStream: " << NameI->second << '\n';
>>>>>>>>>
>>>>>>>>>      // The name stream appears to start with a signature and
>>>>>>>>> version.
>>>>>>>>> -    auto NameStreamSignature =
>>>>>>>>> -        Ctx.getInt<uint32_t>(/*PDBStream=*/NameStream,
>>>>>>>>> NameStreamOffset);
>>>>>>>>> +    uint32_t NameStreamSignature;
>>>>>>>>> +    NameStream.readInteger(NameStreamSignature);
>>>>>>>>>      outs() << "NameStreamSignature: ";
>>>>>>>>>      outs().write_hex(NameStreamSignature) << '\n';
>>>>>>>>>
>>>>>>>>> -    auto NameStreamVersion =
>>>>>>>>> -        Ctx.getInt<uint32_t>(/*PDBStream=*/NameStream,
>>>>>>>>> NameStreamOffset);
>>>>>>>>> +    uint32_t NameStreamVersion;
>>>>>>>>> +    NameStream.readInteger(NameStreamVersion);
>>>>>>>>>      outs() << "NameStreamVersion: " << NameStreamVersion << '\n';
>>>>>>>>>
>>>>>>>>>      // We only support this particular version of the name stream.
>>>>>>>>>      if (NameStreamSignature != 0xeffeeffe || NameStreamVersion !=
>>>>>>>>> 1)
>>>>>>>>> -      Error(std::make_error_code(std::errc::not_supported));
>>>>>>>>> +      reportError("",
>>>>>>>>> std::make_error_code(std::errc::not_supported));
>>>>>>>>>    }
>>>>>>>>>  }
>>>>>>>>>
>>>>>>>>>  static void dumpInput(StringRef Path) {
>>>>>>>>> +  std::unique_ptr<IPDBSession> Session;
>>>>>>>>>    if (opts::DumpHeaders || !opts::DumpStreamData.empty()) {
>>>>>>>>> -    ErrorOr<std::unique_ptr<MemoryBuffer>> ErrorOrBuffer =
>>>>>>>>> -        MemoryBuffer::getFileOrSTDIN(Path, /*FileSize=*/-1,
>>>>>>>>> -
>>>>>>>>>  /*RequiresNullTerminator=*/false);
>>>>>>>>> -
>>>>>>>>> -    if (std::error_code EC = ErrorOrBuffer.getError())
>>>>>>>>> -      reportError(Path, EC);
>>>>>>>>> -
>>>>>>>>> -    std::unique_ptr<MemoryBuffer> &Buffer = ErrorOrBuffer.get();
>>>>>>>>> -
>>>>>>>>> -    dumpStructure(Buffer->getMemBufferRef());
>>>>>>>>> +    PDB_ErrorCode Error = loadDataForPDB(PDB_ReaderType::Raw,
>>>>>>>>> Path, Session);
>>>>>>>>> +    if (Error == PDB_ErrorCode::Success) {
>>>>>>>>> +      RawSession *RS = static_cast<RawSession *>(Session.get());
>>>>>>>>> +      dumpStructure(*RS);
>>>>>>>>> +    }
>>>>>>>>>
>>>>>>>>>      outs().flush();
>>>>>>>>>      return;
>>>>>>>>>    }
>>>>>>>>>
>>>>>>>>> -  std::unique_ptr<IPDBSession> Session;
>>>>>>>>>    PDB_ErrorCode Error = loadDataForPDB(PDB_ReaderType::DIA, Path,
>>>>>>>>> Session);
>>>>>>>>>    switch (Error) {
>>>>>>>>>    case PDB_ErrorCode::Success:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> llvm-commits mailing list
>>>>>>>>> llvm-commits at lists.llvm.org
>>>>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>> llvm-commits mailing list
>>>>>>> llvm-commits at lists.llvm.org
>>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>>>>>>>
>>>>>> --
>>>>>> Mike
>>>>>> Sent from phone
>>>>>
>>>>> --
>>>> Mike
>>>> Sent from phone
>>>
>>>
>>> _______________________________________________
>>> llvm-commits mailing list
>>> llvm-commits at lists.llvm.org
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>>>
>>>
>>
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