diff options
author | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 19:53:05 +0000 |
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committer | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 19:53:05 +0000 |
commit | 0b57cec536236d46e3dba9bd041533462f33dbb7 (patch) | |
tree | 56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.cpp | |
parent | 718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff) |
Notes
Diffstat (limited to 'contrib/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.cpp')
-rw-r--r-- | contrib/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.cpp | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/contrib/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.cpp b/contrib/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.cpp deleted file mode 100644 index 20b6c6142547..000000000000 --- a/contrib/llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.cpp +++ /dev/null @@ -1,191 +0,0 @@ -//===- DbiModuleDescriptorBuilder.cpp - PDB Mod Info Creation ---*- C++ -*-===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// - -#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.h" - -#include "llvm/ADT/ArrayRef.h" -#include "llvm/BinaryFormat/COFF.h" -#include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h" -#include "llvm/DebugInfo/MSF/MSFBuilder.h" -#include "llvm/DebugInfo/MSF/MSFCommon.h" -#include "llvm/DebugInfo/MSF/MappedBlockStream.h" -#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h" -#include "llvm/DebugInfo/PDB/Native/GSIStreamBuilder.h" -#include "llvm/DebugInfo/PDB/Native/RawConstants.h" -#include "llvm/DebugInfo/PDB/Native/RawError.h" -#include "llvm/Support/BinaryStreamWriter.h" - -using namespace llvm; -using namespace llvm::codeview; -using namespace llvm::msf; -using namespace llvm::pdb; - -static uint32_t calculateDiSymbolStreamSize(uint32_t SymbolByteSize, - uint32_t C13Size) { - uint32_t Size = sizeof(uint32_t); // Signature - Size += alignTo(SymbolByteSize, 4); // Symbol Data - Size += 0; // TODO: Layout.C11Bytes - Size += C13Size; // C13 Debug Info Size - Size += sizeof(uint32_t); // GlobalRefs substream size (always 0) - Size += 0; // GlobalRefs substream bytes - return Size; -} - -DbiModuleDescriptorBuilder::DbiModuleDescriptorBuilder(StringRef ModuleName, - uint32_t ModIndex, - msf::MSFBuilder &Msf) - : MSF(Msf), ModuleName(ModuleName) { - ::memset(&Layout, 0, sizeof(Layout)); - Layout.Mod = ModIndex; -} - -DbiModuleDescriptorBuilder::~DbiModuleDescriptorBuilder() {} - -uint16_t DbiModuleDescriptorBuilder::getStreamIndex() const { - return Layout.ModDiStream; -} - -void DbiModuleDescriptorBuilder::setObjFileName(StringRef Name) { - ObjFileName = Name; -} - -void DbiModuleDescriptorBuilder::setPdbFilePathNI(uint32_t NI) { - PdbFilePathNI = NI; -} - -void DbiModuleDescriptorBuilder::setFirstSectionContrib( - const SectionContrib &SC) { - Layout.SC = SC; -} - -void DbiModuleDescriptorBuilder::addSymbol(CVSymbol Symbol) { - // Defer to the bulk API. It does the same thing. - addSymbolsInBulk(Symbol.data()); -} - -void DbiModuleDescriptorBuilder::addSymbolsInBulk( - ArrayRef<uint8_t> BulkSymbols) { - // Do nothing for empty runs of symbols. - if (BulkSymbols.empty()) - return; - - Symbols.push_back(BulkSymbols); - // Symbols written to a PDB file are required to be 4 byte aligned. The same - // is not true of object files. - assert(BulkSymbols.size() % alignOf(CodeViewContainer::Pdb) == 0 && - "Invalid Symbol alignment!"); - SymbolByteSize += BulkSymbols.size(); -} - -void DbiModuleDescriptorBuilder::addSourceFile(StringRef Path) { - SourceFiles.push_back(Path); -} - -uint32_t DbiModuleDescriptorBuilder::calculateC13DebugInfoSize() const { - uint32_t Result = 0; - for (const auto &Builder : C13Builders) { - assert(Builder && "Empty C13 Fragment Builder!"); - Result += Builder->calculateSerializedLength(); - } - return Result; -} - -uint32_t DbiModuleDescriptorBuilder::calculateSerializedLength() const { - uint32_t L = sizeof(Layout); - uint32_t M = ModuleName.size() + 1; - uint32_t O = ObjFileName.size() + 1; - return alignTo(L + M + O, sizeof(uint32_t)); -} - -void DbiModuleDescriptorBuilder::finalize() { - Layout.FileNameOffs = 0; // TODO: Fix this - Layout.Flags = 0; // TODO: Fix this - Layout.C11Bytes = 0; - Layout.C13Bytes = calculateC13DebugInfoSize(); - (void)Layout.Mod; // Set in constructor - (void)Layout.ModDiStream; // Set in finalizeMsfLayout - Layout.NumFiles = SourceFiles.size(); - Layout.PdbFilePathNI = PdbFilePathNI; - Layout.SrcFileNameNI = 0; - - // This value includes both the signature field as well as the record bytes - // from the symbol stream. - Layout.SymBytes = - Layout.ModDiStream == kInvalidStreamIndex ? 0 : getNextSymbolOffset(); -} - -Error DbiModuleDescriptorBuilder::finalizeMsfLayout() { - this->Layout.ModDiStream = kInvalidStreamIndex; - uint32_t C13Size = calculateC13DebugInfoSize(); - if (!C13Size && !SymbolByteSize) - return Error::success(); - auto ExpectedSN = - MSF.addStream(calculateDiSymbolStreamSize(SymbolByteSize, C13Size)); - if (!ExpectedSN) - return ExpectedSN.takeError(); - Layout.ModDiStream = *ExpectedSN; - return Error::success(); -} - -Error DbiModuleDescriptorBuilder::commit(BinaryStreamWriter &ModiWriter, - const msf::MSFLayout &MsfLayout, - WritableBinaryStreamRef MsfBuffer) { - // We write the Modi record to the `ModiWriter`, but we additionally write its - // symbol stream to a brand new stream. - if (auto EC = ModiWriter.writeObject(Layout)) - return EC; - if (auto EC = ModiWriter.writeCString(ModuleName)) - return EC; - if (auto EC = ModiWriter.writeCString(ObjFileName)) - return EC; - if (auto EC = ModiWriter.padToAlignment(sizeof(uint32_t))) - return EC; - - if (Layout.ModDiStream != kInvalidStreamIndex) { - auto NS = WritableMappedBlockStream::createIndexedStream( - MsfLayout, MsfBuffer, Layout.ModDiStream, MSF.getAllocator()); - WritableBinaryStreamRef Ref(*NS); - BinaryStreamWriter SymbolWriter(Ref); - // Write the symbols. - if (auto EC = - SymbolWriter.writeInteger<uint32_t>(COFF::DEBUG_SECTION_MAGIC)) - return EC; - for (ArrayRef<uint8_t> Syms : Symbols) { - if (auto EC = SymbolWriter.writeBytes(Syms)) - return EC; - } - assert(SymbolWriter.getOffset() % alignOf(CodeViewContainer::Pdb) == 0 && - "Invalid debug section alignment!"); - // TODO: Write C11 Line data - for (const auto &Builder : C13Builders) { - assert(Builder && "Empty C13 Fragment Builder!"); - if (auto EC = Builder->commit(SymbolWriter)) - return EC; - } - - // TODO: Figure out what GlobalRefs substream actually is and populate it. - if (auto EC = SymbolWriter.writeInteger<uint32_t>(0)) - return EC; - if (SymbolWriter.bytesRemaining() > 0) - return make_error<RawError>(raw_error_code::stream_too_long); - } - return Error::success(); -} - -void DbiModuleDescriptorBuilder::addDebugSubsection( - std::shared_ptr<DebugSubsection> Subsection) { - assert(Subsection); - C13Builders.push_back(llvm::make_unique<DebugSubsectionRecordBuilder>( - std::move(Subsection), CodeViewContainer::Pdb)); -} - -void DbiModuleDescriptorBuilder::addDebugSubsection( - const DebugSubsectionRecord &SubsectionContents) { - C13Builders.push_back(llvm::make_unique<DebugSubsectionRecordBuilder>( - SubsectionContents, CodeViewContainer::Pdb)); -} |