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1 //===- Driver.h -------------------------------------------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #ifndef LLD_MACHO_DRIVER_H
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10 #define LLD_MACHO_DRIVER_H
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11
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12 #include "lld/Common/LLVM.h"
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207
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13 #include "llvm/ADT/Optional.h"
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14 #include "llvm/ADT/SetVector.h"
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15 #include "llvm/ADT/StringRef.h"
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16 #include "llvm/Option/OptTable.h"
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207
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17 #include "llvm/Support/MemoryBuffer.h"
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18
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19 #include <set>
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20 #include <type_traits>
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21
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22 namespace llvm {
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23 namespace MachO {
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24 class InterfaceFile;
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25 } // namespace MachO
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26 } // namespace llvm
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173
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27
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28 namespace lld {
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29 namespace macho {
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30
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31 class DylibFile;
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32 class InputFile;
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33
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34 class MachOOptTable : public llvm::opt::OptTable {
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35 public:
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36 MachOOptTable();
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37 llvm::opt::InputArgList parse(ArrayRef<const char *> argv);
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207
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38 void printHelp(const char *argv0, bool showHidden) const;
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39 };
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40
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41 // Create enum with OPT_xxx values for each option in Options.td
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42 enum {
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43 OPT_INVALID = 0,
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44 #define OPTION(_1, _2, ID, _4, _5, _6, _7, _8, _9, _10, _11, _12) OPT_##ID,
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45 #include "Options.inc"
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46 #undef OPTION
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47 };
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48
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207
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49 void parseLCLinkerOption(InputFile *, unsigned argc, StringRef data);
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50
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51 std::string createResponseFile(const llvm::opt::InputArgList &args);
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52
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53 // Check for both libfoo.dylib and libfoo.tbd (in that order).
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54 llvm::Optional<std::string> resolveDylibPath(llvm::StringRef path);
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55
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56 DylibFile *loadDylib(llvm::MemoryBufferRef mbref, DylibFile *umbrella = nullptr,
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57 bool isBundleLoader = false);
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58
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59 // Search for all possible combinations of `{root}/{name}.{extension}`.
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60 // If \p extensions are not specified, then just search for `{root}/{name}`.
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61 llvm::Optional<llvm::StringRef>
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62 findPathCombination(const llvm::Twine &name,
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63 const std::vector<llvm::StringRef> &roots,
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64 ArrayRef<llvm::StringRef> extensions = {""});
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65
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66 // If -syslibroot is specified, absolute paths to non-object files may be
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67 // rerooted.
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68 llvm::StringRef rerootPath(llvm::StringRef path);
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69
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70 llvm::Optional<InputFile *> loadArchiveMember(MemoryBufferRef, uint32_t modTime,
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71 StringRef archiveName,
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72 bool objCOnly);
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73
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74 uint32_t getModTime(llvm::StringRef path);
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75
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76 void printArchiveMemberLoad(StringRef reason, const InputFile *);
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77
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78 // Helper class to export dependency info.
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79 class DependencyTracker {
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80 public:
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81 explicit DependencyTracker(llvm::StringRef path);
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82
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83 // Adds the given path to the set of not-found files.
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84 inline void logFileNotFound(std::string path) {
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85 if (active)
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86 notFounds.insert(std::move(path));
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87 }
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88
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89 inline void logFileNotFound(const Twine &path) {
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90 if (active)
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91 notFounds.insert(path.str());
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92 }
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93
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94 // Writes the dependencies to specified path.
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95 // The content is sorted by its Op Code, then within each section,
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96 // alphabetical order.
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97 void write(llvm::StringRef version,
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98 const llvm::SetVector<InputFile *> &inputs,
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99 llvm::StringRef output);
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100
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101 private:
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102 enum DepOpCode : uint8_t {
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103 // Denotes the linker version.
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104 Version = 0x00,
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105 // Denotes the input files.
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106 Input = 0x10,
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107 // Denotes the files that do not exist(?)
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108 NotFound = 0x11,
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109 // Denotes the output files.
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110 Output = 0x40,
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111 };
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112
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113 const llvm::StringRef path;
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114 bool active;
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115
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116 // The paths need to be alphabetically ordered.
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117 // We need to own the paths because some of them are temporarily
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118 // constructed.
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119 std::set<std::string> notFounds;
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120 };
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121
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122 extern DependencyTracker *depTracker;
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123
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173
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124 } // namespace macho
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125 } // namespace lld
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126
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127 #endif
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