e4c83b7b11
The ObjectFile plugin interface accepts an optional DataBufferSP argument. If the caller has the contents of the binary, it can provide this in that DataBufferSP. The ObjectFile subclasses in their CreateInstance methods will fill in the DataBufferSP with the actual binary contents if it is not set. ObjectFile base class creates an ivar DataExtractor from the DataBufferSP passed in. My next patch will be a caller that creates a VirtualDataExtractor with the binary data, and needs to pass that in to the ObjectFile plugin, instead of the bag-of-bytes DataBufferSP. It builds on the previous patch changing ObjectFile's ivar from DataExtractor to DataExtractorSP so I could pass in a subclass in the shared ptr. And it will be using the VirtualDataExtractor that Jonas added in https://github.com/llvm/llvm-project/pull/168802 No behavior is changed by the patch; we're simply moving the creation of the DataExtractor to the caller, instead of a DataBuffer that is immediately used to set up the ObjectFile DataExtractor. The patch is a bit complicated because all of the ObjectFile subclasses have to initialize their DataExtractor to pass in to the base class. I ran the testsuite on macOS and on AArch64 Ubutnu. (btw David, I ran it under qemu on my M4 mac with SME-no-SVE again, Ubuntu 25.10, checked lshw(1) cpu capabilities, and qemu doesn't seem to be virtualizing the SME, that explains why the testsuite passes) rdar://148939795 --------- Co-authored-by: Jonas Devlieghere <jonas@devlieghere.com>
109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
//===-- ObjectFilePDB.h --------------------------------------- -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLDB_SOURCE_PLUGINS_OBJECTFILE_PDB_OBJECTFILEPDB_H
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#define LLDB_SOURCE_PLUGINS_OBJECTFILE_PDB_OBJECTFILEPDB_H
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Utility/ArchSpec.h"
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#include "llvm/DebugInfo/PDB/Native/NativeSession.h"
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#include "llvm/DebugInfo/PDB/PDBTypes.h"
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namespace lldb_private {
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class ObjectFilePDB : public ObjectFile {
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public:
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// Static Functions
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static void Initialize();
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static void Terminate();
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static llvm::StringRef GetPluginNameStatic() { return "pdb"; }
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static const char *GetPluginDescriptionStatic() {
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return "PDB object file reader.";
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}
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static std::unique_ptr<llvm::pdb::PDBFile>
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loadPDBFile(std::string PdbPath, llvm::BumpPtrAllocator &Allocator);
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static ObjectFile *CreateInstance(const lldb::ModuleSP &module_sp,
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lldb::DataExtractorSP extractor_sp,
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lldb::offset_t data_offset,
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const FileSpec *file,
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lldb::offset_t file_offset,
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lldb::offset_t length);
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static ObjectFile *CreateMemoryInstance(const lldb::ModuleSP &module_sp,
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lldb::WritableDataBufferSP data_sp,
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const lldb::ProcessSP &process_sp,
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lldb::addr_t header_addr);
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static size_t GetModuleSpecifications(const FileSpec &file,
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lldb::DataBufferSP &data_sp,
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lldb::offset_t data_offset,
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lldb::offset_t file_offset,
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lldb::offset_t length,
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ModuleSpecList &specs);
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// PluginInterface protocol
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llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
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// LLVM RTTI support
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static char ID;
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bool isA(const void *ClassID) const override {
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return ClassID == &ID || ObjectFile::isA(ClassID);
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}
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static bool classof(const ObjectFile *obj) { return obj->isA(&ID); }
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// ObjectFile Protocol.
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uint32_t GetAddressByteSize() const override { return 8; }
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lldb::ByteOrder GetByteOrder() const override {
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return lldb::eByteOrderLittle;
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}
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bool ParseHeader() override { return true; }
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bool IsExecutable() const override { return false; }
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void ParseSymtab(lldb_private::Symtab &symtab) override {}
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bool IsStripped() override { return false; }
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// No section in PDB file.
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void CreateSections(SectionList &unified_section_list) override {}
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void Dump(Stream *s) override {}
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ArchSpec GetArchitecture() override;
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UUID GetUUID() override { return m_uuid; }
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uint32_t GetDependentModules(FileSpecList &files) override { return 0; }
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Type CalculateType() override { return eTypeDebugInfo; }
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Strata CalculateStrata() override { return eStrataUser; }
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llvm::pdb::PDBFile &GetPDBFile() { return *m_file_up; }
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ObjectFilePDB(const lldb::ModuleSP &module_sp,
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lldb::DataExtractorSP &extractor_sp, lldb::offset_t data_offset,
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const FileSpec *file, lldb::offset_t offset,
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lldb::offset_t length);
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private:
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UUID m_uuid;
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llvm::BumpPtrAllocator m_allocator;
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std::unique_ptr<llvm::pdb::PDBFile> m_file_up;
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bool initPDBFile();
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};
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} // namespace lldb_private
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#endif // LLDB_SOURCE_PLUGINS_OBJECTFILE_PDB_OBJECTFILEPDB_H
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