forked from OSchip/llvm-project
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
//===- PDB.cpp ------------------------------------------------------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "PDB.h"
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#include "Error.h"
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#include "llvm/DebugInfo/MSF/MSFBuilder.h"
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#include "llvm/DebugInfo/MSF/MSFCommon.h"
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#include "llvm/DebugInfo/PDB/Raw/DbiStream.h"
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#include "llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h"
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#include "llvm/DebugInfo/PDB/Raw/InfoStream.h"
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#include "llvm/DebugInfo/PDB/Raw/InfoStreamBuilder.h"
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#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
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#include "llvm/DebugInfo/PDB/Raw/PDBFileBuilder.h"
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#include "llvm/DebugInfo/PDB/Raw/TpiStream.h"
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#include "llvm/DebugInfo/PDB/Raw/TpiStreamBuilder.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/FileOutputBuffer.h"
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#include <memory>
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using namespace lld;
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using namespace llvm;
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using namespace llvm::support;
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using namespace llvm::support::endian;
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static ExitOnError ExitOnErr;
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const int BlockSize = 4096;
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void coff::createPDB(StringRef Path) {
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// Create a file.
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size_t FileSize = BlockSize * 10;
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auto BufferOrErr = FileOutputBuffer::create(Path, FileSize);
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if (auto EC = BufferOrErr.getError())
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fatal(EC, "failed to open " + Path);
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auto FileByteStream =
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llvm::make_unique<msf::FileBufferByteStream>(std::move(*BufferOrErr));
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// Create the superblock.
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msf::SuperBlock SB;
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memcpy(SB.MagicBytes, msf::Magic, sizeof(msf::Magic));
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SB.BlockSize = 4096;
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SB.FreeBlockMapBlock = 2;
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SB.NumBlocks = 10;
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SB.NumDirectoryBytes = 0;
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SB.Unknown1 = 0;
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SB.BlockMapAddr = 9;
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BumpPtrAllocator Alloc;
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pdb::PDBFileBuilder Builder(Alloc);
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ExitOnErr(Builder.initialize(SB));
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ExitOnErr(Builder.getMsfBuilder().setDirectoryBlocksHint({8}));
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ExitOnErr(Builder.getMsfBuilder().addStream(1, {4}));
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ExitOnErr(Builder.getMsfBuilder().addStream(1, {5}));
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ExitOnErr(Builder.getMsfBuilder().addStream(1, {6}));
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// Add an Info stream.
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auto &InfoBuilder = Builder.getInfoBuilder();
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InfoBuilder.setAge(1);
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// Should be a random number, 0 for now.
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InfoBuilder.setGuid({});
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// Should be the current time, but set 0 for reproducibilty.
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InfoBuilder.setSignature(0);
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InfoBuilder.setVersion(pdb::PdbRaw_ImplVer::PdbImplVC70);
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// Add an empty TPI stream.
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auto &TpiBuilder = Builder.getTpiBuilder();
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TpiBuilder.setVersionHeader(pdb::PdbTpiV80);
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// Write the root directory. Root stream is on page 2.
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ExitOnErr(Builder.commit(*FileByteStream));
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}
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