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>
126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
//===-- ObjectFileXCOFF.h --------------------------------------- -*- C++
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//-*-===//
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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_XCOFF_OBJECTFILEXCOFF_H
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#define LLDB_SOURCE_PLUGINS_OBJECTFILE_XCOFF_OBJECTFILEXCOFF_H
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Utility/ArchSpec.h"
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#include "lldb/Utility/FileSpec.h"
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#include "lldb/Utility/UUID.h"
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#include "lldb/lldb-private.h"
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#include "llvm/Object/XCOFFObjectFile.h"
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#include <cstdint>
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#include <vector>
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/// \class ObjectFileXCOFF
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/// Generic XCOFF object file reader.
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///
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/// This class provides a generic XCOFF (32/64 bit) reader plugin implementing
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/// the ObjectFile protocol.
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class ObjectFileXCOFF : public lldb_private::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 "xcoff"; }
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static llvm::StringRef GetPluginDescriptionStatic() {
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return "XCOFF object file reader.";
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}
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static lldb_private::ObjectFile *
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CreateInstance(const lldb::ModuleSP &module_sp,
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lldb::DataExtractorSP extractor_sp, lldb::offset_t data_offset,
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const lldb_private::FileSpec *file, lldb::offset_t file_offset,
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lldb::offset_t length);
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static lldb_private::ObjectFile *CreateMemoryInstance(
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const lldb::ModuleSP &module_sp, lldb::WritableDataBufferSP data_sp,
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const lldb::ProcessSP &process_sp, lldb::addr_t header_addr);
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static size_t GetModuleSpecifications(const lldb_private::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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lldb_private::ModuleSpecList &specs);
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static bool MagicBytesMatch(lldb::DataBufferSP &data_sp, lldb::addr_t offset,
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lldb::addr_t length);
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// PluginInterface protocol
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llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
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// ObjectFile Protocol.
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bool ParseHeader() override;
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lldb::ByteOrder GetByteOrder() const override;
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bool IsExecutable() const override;
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uint32_t GetAddressByteSize() const override;
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lldb_private::AddressClass GetAddressClass(lldb::addr_t file_addr) override;
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void ParseSymtab(lldb_private::Symtab &symtab) override;
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bool IsStripped() override;
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void CreateSections(lldb_private::SectionList &unified_section_list) override;
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void Dump(lldb_private::Stream *s) override;
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lldb_private::ArchSpec GetArchitecture() override;
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lldb_private::UUID GetUUID() override;
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uint32_t GetDependentModules(lldb_private::FileSpecList &files) override;
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ObjectFile::Type CalculateType() override;
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ObjectFile::Strata CalculateStrata() override;
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ObjectFileXCOFF(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 lldb_private::FileSpec *file, lldb::offset_t offset,
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lldb::offset_t length);
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ObjectFileXCOFF(const lldb::ModuleSP &module_sp,
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lldb::DataBufferSP header_data_sp,
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const lldb::ProcessSP &process_sp, lldb::addr_t header_addr);
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protected:
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static lldb::WritableDataBufferSP
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MapFileDataWritable(const lldb_private::FileSpec &file, uint64_t Size,
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uint64_t Offset);
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private:
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bool CreateBinary();
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template <typename T>
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void
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CreateSectionsWithBitness(lldb_private::SectionList &unified_section_list);
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struct XCOFF32 {
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using SectionHeader = llvm::object::XCOFFSectionHeader32;
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static constexpr bool Is64Bit = false;
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};
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struct XCOFF64 {
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using SectionHeader = llvm::object::XCOFFSectionHeader64;
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static constexpr bool Is64Bit = true;
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};
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std::unique_ptr<llvm::object::XCOFFObjectFile> m_binary;
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};
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#endif // LLDB_SOURCE_PLUGINS_OBJECTFILE_XCOFF_OBJECTFILE_H
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