1 //===- ELFStub.h ------------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===-----------------------------------------------------------------------===/ 8 /// 9 /// \file 10 /// This file defines an internal representation of an ELF stub. 11 /// 12 //===-----------------------------------------------------------------------===/ 13 14 #ifndef LLVM_TEXTAPI_ELF_ELFSTUB_H 15 #define LLVM_TEXTAPI_ELF_ELFSTUB_H 16 17 #include "llvm/BinaryFormat/ELF.h" 18 #include "llvm/Support/VersionTuple.h" 19 #include <vector> 20 #include <set> 21 22 namespace llvm { 23 namespace elfabi { 24 25 typedef uint16_t ELFArch; 26 27 enum class ELFSymbolType { 28 NoType = ELF::STT_NOTYPE, 29 Object = ELF::STT_OBJECT, 30 Func = ELF::STT_FUNC, 31 TLS = ELF::STT_TLS, 32 33 // Type information is 4 bits, so 16 is safely out of range. 34 Unknown = 16, 35 }; 36 37 struct ELFSymbol { ELFSymbolELFSymbol38 ELFSymbol(std::string SymbolName) : Name(SymbolName) {} 39 std::string Name; 40 uint64_t Size; 41 ELFSymbolType Type; 42 bool Undefined; 43 bool Weak; 44 Optional<std::string> Warning; 45 bool operator<(const ELFSymbol &RHS) const { 46 return Name < RHS.Name; 47 } 48 }; 49 50 // A cumulative representation of ELF stubs. 51 // Both textual and binary stubs will read into and write from this object. 52 class ELFStub { 53 // TODO: Add support for symbol versioning. 54 public: 55 VersionTuple TbeVersion; 56 Optional<std::string> SoName; 57 ELFArch Arch; 58 std::vector<std::string> NeededLibs; 59 std::set<ELFSymbol> Symbols; 60 ELFStub()61 ELFStub() {} 62 ELFStub(const ELFStub &Stub); 63 ELFStub(ELFStub &&Stub); 64 }; 65 } // end namespace elfabi 66 } // end namespace llvm 67 68 #endif // LLVM_TEXTAPI_ELF_ELFSTUB_H 69