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//===- SymbolizableObjectFile.h ---------------------------------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file declares the SymbolizableObjectFile class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
#define LLVM_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
#include "llvm/ADT/StringRef.h"
#include "llvm/DebugInfo/DIContext.h"
#include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
#include "llvm/Support/Error.h"
#include <cstdint>
#include <memory>
#include <string>
#include <utility>
#include <vector>
namespace llvm {
class DataExtractor;
namespace symbolize {
class SymbolizableObjectFile : public SymbolizableModule {
public:
static Expected<std::unique_ptr<SymbolizableObjectFile>>
create(const object::ObjectFile *Obj, std::unique_ptr<DIContext> DICtx,
bool UntagAddresses);
DILineInfo symbolizeCode(object::SectionedAddress ModuleOffset,
DILineInfoSpecifier LineInfoSpecifier,
bool UseSymbolTable) const override;
DIInliningInfo symbolizeInlinedCode(object::SectionedAddress ModuleOffset,
DILineInfoSpecifier LineInfoSpecifier,
bool UseSymbolTable) const override;
DIGlobal symbolizeData(object::SectionedAddress ModuleOffset) const override;
std::vector<DILocal>
symbolizeFrame(object::SectionedAddress ModuleOffset) const override;
std::vector<object::SectionedAddress>
findSymbol(StringRef Symbol, uint64_t Offset) const override;
// Return true if this is a 32-bit x86 PE COFF module.
bool isWin32Module() const override;
// Returns the preferred base of the module, i.e. where the loader would place
// it in memory assuming there were no conflicts.
uint64_t getModulePreferredBase() const override;
private:
bool shouldOverrideWithSymbolTable(FunctionNameKind FNKind,
bool UseSymbolTable) const;
bool getNameFromSymbolTable(uint64_t Address, std::string &Name,
uint64_t &Addr, uint64_t &Size,
std::string &FileName) const;
// For big-endian PowerPC64 ELF, OpdAddress is the address of the .opd
// (function descriptor) section and OpdExtractor refers to its contents.
Error addSymbol(const object::SymbolRef &Symbol, uint64_t SymbolSize,
DataExtractor *OpdExtractor = nullptr,
uint64_t OpdAddress = 0);
Error addCoffExportSymbols(const object::COFFObjectFile *CoffObj);
/// Search for the first occurence of specified Address in ObjectFile.
uint64_t getModuleSectionIndexForAddress(uint64_t Address) const;
const object::ObjectFile *Module;
std::unique_ptr<DIContext> DebugInfoContext;
bool UntagAddresses;
struct SymbolDesc {
uint64_t Addr;
// If size is 0, assume that symbol occupies the whole memory range up to
// the following symbol.
uint64_t Size;
StringRef Name;
// Non-zero if this is an ELF local symbol. See the comment in
// getNameFromSymbolTable.
uint32_t ELFLocalSymIdx;
bool operator<(const SymbolDesc &RHS) const {
return Addr != RHS.Addr ? Addr < RHS.Addr : Size < RHS.Size;
}
};
std::vector<SymbolDesc> Symbols;
// (index, filename) pairs of ELF STT_FILE symbols.
std::vector<std::pair<uint32_t, StringRef>> FileSymbols;
SymbolizableObjectFile(const object::ObjectFile *Obj,
std::unique_ptr<DIContext> DICtx,
bool UntagAddresses);
};
} // end namespace symbolize
} // end namespace llvm
#endif // LLVM_DEBUGINFO_SYMBOLIZE_SYMBOLIZABLEOBJECTFILE_H
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