1 //===- OutputSegment.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 #ifndef LLD_MACHO_OUTPUT_SEGMENT_H 10 #define LLD_MACHO_OUTPUT_SEGMENT_H 11 12 #include "OutputSection.h" 13 #include "Symbols.h" 14 #include "lld/Common/LLVM.h" 15 #include "llvm/ADT/TinyPtrVector.h" 16 17 #include <limits> 18 #include <vector> 19 20 namespace lld { 21 namespace macho { 22 23 namespace segment_names { 24 25 constexpr const char dataConst[] = "__DATA_CONST"; 26 constexpr const char dataDirty[] = "__DATA_DIRTY"; 27 constexpr const char data[] = "__DATA"; 28 constexpr const char dwarf[] = "__DWARF"; 29 constexpr const char import[] = "__IMPORT"; 30 constexpr const char ld[] = "__LD"; // output only with -r 31 constexpr const char linkEdit[] = "__LINKEDIT"; 32 constexpr const char llvm[] = "__LLVM"; 33 constexpr const char pageZero[] = "__PAGEZERO"; 34 constexpr const char textExec[] = "__TEXT_EXEC"; 35 constexpr const char text[] = "__TEXT"; 36 37 } // namespace segment_names 38 39 class OutputSection; 40 class InputSection; 41 42 class OutputSegment { 43 public: 44 void addOutputSection(OutputSection *os); 45 void sortOutputSections(); 46 void assignAddressesToStartEndSymbols(); 47 48 const std::vector<OutputSection *> &getSections() const { return sections; } 49 size_t numNonHiddenSections() const; 50 51 uint64_t fileOff = 0; 52 uint64_t fileSize = 0; 53 uint64_t addr = 0; 54 uint64_t vmSize = 0; 55 int inputOrder = UnspecifiedInputOrder; 56 StringRef name; 57 uint32_t maxProt = 0; 58 uint32_t initProt = 0; 59 uint8_t index; 60 61 llvm::TinyPtrVector<Defined *> segmentStartSymbols; 62 llvm::TinyPtrVector<Defined *> segmentEndSymbols; 63 64 private: 65 std::vector<OutputSection *> sections; 66 }; 67 68 extern std::vector<OutputSegment *> outputSegments; 69 70 void sortOutputSegments(); 71 void resetOutputSegments(); 72 73 OutputSegment *getOrCreateOutputSegment(StringRef name); 74 75 } // namespace macho 76 } // namespace lld 77 78 #endif 79