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Currently, the symbolizer lib can only symbolize a file on disk. This patch teaches the symbolizer lib to symbolize objects. llvm-objdump needs this to support archive disassembly with source info. https://bugs.llvm.org/show_bug.cgi?id=41871 Reviewed by: jhenderson, grimar, MaskRay Differential Revision: https://reviews.llvm.org/D63521 llvm-svn: 365376
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
//===- SymbolizableObjectFile.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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//
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// This file declares the SymbolizableObjectFile class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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#define LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/DebugInfo/DIContext.h"
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#include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
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#include "llvm/Support/ErrorOr.h"
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#include <cstdint>
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#include <map>
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#include <memory>
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#include <string>
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#include <system_error>
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namespace llvm {
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class DataExtractor;
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namespace symbolize {
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class SymbolizableObjectFile : public SymbolizableModule {
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public:
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static ErrorOr<std::unique_ptr<SymbolizableObjectFile>>
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create(const object::ObjectFile *Obj, std::unique_ptr<DIContext> DICtx);
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DILineInfo symbolizeCode(object::SectionedAddress ModuleOffset,
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FunctionNameKind FNKind,
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bool UseSymbolTable) const override;
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DIInliningInfo symbolizeInlinedCode(object::SectionedAddress ModuleOffset,
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FunctionNameKind FNKind,
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bool UseSymbolTable) const override;
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DIGlobal symbolizeData(object::SectionedAddress ModuleOffset) const override;
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std::vector<DILocal>
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symbolizeFrame(object::SectionedAddress ModuleOffset) const override;
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// Return true if this is a 32-bit x86 PE COFF module.
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bool isWin32Module() const override;
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// Returns the preferred base of the module, i.e. where the loader would place
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// it in memory assuming there were no conflicts.
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uint64_t getModulePreferredBase() const override;
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private:
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bool shouldOverrideWithSymbolTable(FunctionNameKind FNKind,
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bool UseSymbolTable) const;
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bool getNameFromSymbolTable(object::SymbolRef::Type Type, uint64_t Address,
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std::string &Name, uint64_t &Addr,
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uint64_t &Size) const;
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// For big-endian PowerPC64 ELF, OpdAddress is the address of the .opd
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// (function descriptor) section and OpdExtractor refers to its contents.
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std::error_code addSymbol(const object::SymbolRef &Symbol,
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uint64_t SymbolSize,
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DataExtractor *OpdExtractor = nullptr,
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uint64_t OpdAddress = 0);
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std::error_code addCoffExportSymbols(const object::COFFObjectFile *CoffObj);
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/// Search for the first occurence of specified Address in ObjectFile.
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uint64_t getModuleSectionIndexForAddress(uint64_t Address) const;
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const object::ObjectFile *Module;
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std::unique_ptr<DIContext> DebugInfoContext;
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struct SymbolDesc {
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uint64_t Addr;
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// If size is 0, assume that symbol occupies the whole memory range up to
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// the following symbol.
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uint64_t Size;
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bool operator<(const SymbolDesc &RHS) const {
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return Addr != RHS.Addr ? Addr < RHS.Addr : Size < RHS.Size;
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}
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};
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std::vector<std::pair<SymbolDesc, StringRef>> Functions;
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std::vector<std::pair<SymbolDesc, StringRef>> Objects;
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SymbolizableObjectFile(const object::ObjectFile *Obj,
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std::unique_ptr<DIContext> DICtx);
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};
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} // end namespace symbolize
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} // end namespace llvm
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#endif // LLVM_LIB_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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