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8ef979bdc8
Based strictly on the name, this seems to have something to do width edit & continue. The goal of this patch has nothing to do with supporting edit and continue though. msvc link.exe writes very basic information into this area even when *not* compiling with support for E&C, and so the goal here is to bring lld-link to parity. Since we cannot know what assumptions standard tools make about the content of PDB files, we need to be as close as possible. This ECNames data structure is a standard PDB string hash table. link.exe puts a single string into this hash table, which is the full path to the PDB file on disk. It then references this string from the module descriptor for the compiler generated `* Linker *` module. With this patch, lld-link will generate the exact same sequence of bytes as MSVC link for this subsection for a given object file input (as reported by `llvm-pdbutil bytes -ec`). llvm-svn: 307356
106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
//===- DbiModuleDescriptorBuilder.h - PDB module information ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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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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#ifndef LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTORBUILDER_H
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#define LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTORBUILDER_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
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#include "llvm/DebugInfo/CodeView/DebugInlineeLinesSubsection.h"
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#include "llvm/DebugInfo/CodeView/DebugLinesSubsection.h"
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#include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
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#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
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#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
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#include "llvm/Support/Error.h"
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#include <cstdint>
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#include <string>
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#include <vector>
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namespace llvm {
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class BinaryStreamWriter;
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namespace codeview {
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class DebugSubsectionRecordBuilder;
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}
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namespace msf {
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class MSFBuilder;
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struct MSFLayout;
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}
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namespace pdb {
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class DbiModuleDescriptorBuilder {
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friend class DbiStreamBuilder;
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public:
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DbiModuleDescriptorBuilder(StringRef ModuleName, uint32_t ModIndex,
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msf::MSFBuilder &Msf);
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~DbiModuleDescriptorBuilder();
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DbiModuleDescriptorBuilder(const DbiModuleDescriptorBuilder &) = delete;
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DbiModuleDescriptorBuilder &
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operator=(const DbiModuleDescriptorBuilder &) = delete;
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void setPdbFilePathNI(uint32_t NI);
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void setObjFileName(StringRef Name);
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void addSymbol(codeview::CVSymbol Symbol);
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void
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addDebugSubsection(std::shared_ptr<codeview::DebugSubsection> Subsection);
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void
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addDebugSubsection(const codeview::DebugSubsectionRecord &SubsectionContents);
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uint16_t getStreamIndex() const;
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StringRef getModuleName() const { return ModuleName; }
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StringRef getObjFileName() const { return ObjFileName; }
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unsigned getModuleIndex() const { return Layout.Mod; }
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ArrayRef<std::string> source_files() const {
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return makeArrayRef(SourceFiles);
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}
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uint32_t calculateSerializedLength() const;
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/// Return the offset within the module symbol stream of the next symbol
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/// record passed to addSymbol. Add four to account for the signature.
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uint32_t getNextSymbolOffset() const { return SymbolByteSize + 4; }
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void finalize();
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Error finalizeMsfLayout();
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Error commit(BinaryStreamWriter &ModiWriter, const msf::MSFLayout &MsfLayout,
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WritableBinaryStreamRef MsfBuffer);
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private:
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uint32_t calculateC13DebugInfoSize() const;
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void addSourceFile(StringRef Path);
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msf::MSFBuilder &MSF;
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uint32_t SymbolByteSize = 0;
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uint32_t PdbFilePathNI = 0;
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std::string ModuleName;
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std::string ObjFileName;
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std::vector<std::string> SourceFiles;
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std::vector<codeview::CVSymbol> Symbols;
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std::vector<std::unique_ptr<codeview::DebugSubsectionRecordBuilder>>
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C13Builders;
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ModuleInfoHeader Layout;
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};
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} // end namespace pdb
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} // end namespace llvm
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#endif // LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTORBUILDER_H
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