lld/MachO/OutputSegment.h

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