diff options
Diffstat (limited to 'llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp')
| -rw-r--r-- | llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp b/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp index ddc8102..533242f 100644 --- a/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp +++ b/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp @@ -104,6 +104,7 @@ Error PDBFile::setBlockData(uint32_t BlockIndex, uint32_t Offset, Error PDBFile::parseFileHeaders() { StreamReader Reader(*Buffer); + // Initialize SB. const msf::SuperBlock *SB = nullptr; if (auto EC = Reader.readObject(SB)) { consumeError(std::move(EC)); @@ -119,6 +120,16 @@ Error PDBFile::parseFileHeaders() { "File size is not a multiple of block size"); ContainerLayout.SB = SB; + // Initialize Free Page Map. + ContainerLayout.FreePageMap.resize(getBlockSize() * 8); + uint64_t FPMOffset = SB->FreeBlockMapBlock * getBlockSize(); + ArrayRef<uint8_t> FPMBlock; + if (auto EC = Buffer->readBytes(FPMOffset, getBlockSize(), FPMBlock)) + return EC; + for (uint32_t I = 0, E = getBlockSize() * 8; I != E; ++I) + if (FPMBlock[I / 8] & (1 << (I % 8))) + ContainerLayout.FreePageMap[I] = true; + Reader.setOffset(getBlockMapOffset()); if (auto EC = Reader.readArray(ContainerLayout.DirectoryBlocks, getNumDirectoryBlocks())) |