1 //===- Driver.h -------------------------------------------------*- C++ -*-===//
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLD_COFF_DRIVER_H
11 #define LLD_COFF_DRIVER_H
14 #include "SymbolTable.h"
15 #include "lld/Core/LLVM.h"
16 #include "lld/Core/Reproduce.h"
17 #include "llvm/ADT/Optional.h"
18 #include "llvm/ADT/StringRef.h"
19 #include "llvm/Object/Archive.h"
20 #include "llvm/Object/COFF.h"
21 #include "llvm/Option/Arg.h"
22 #include "llvm/Option/ArgList.h"
31 extern LinkerDriver *Driver;
33 using llvm::COFF::MachineTypes;
34 using llvm::COFF::WindowsSubsystem;
38 // Implemented in MarkLive.cpp.
39 void markLive(const std::vector<Chunk *> &Chunks);
41 // Implemented in ICF.cpp.
42 void doICF(const std::vector<Chunk *> &Chunks);
46 // Parses command line options.
47 llvm::opt::InputArgList parse(llvm::ArrayRef<const char *> Args);
49 // Concatenate LINK environment varirable and given arguments and parse them.
50 llvm::opt::InputArgList parseLINK(llvm::ArrayRef<const char *> Args);
52 // Tokenizes a given string and then parses as command line options.
53 llvm::opt::InputArgList parse(StringRef S) { return parse(tokenize(S)); }
56 std::vector<const char *> tokenize(StringRef S);
58 std::vector<const char *> replaceResponseFiles(std::vector<const char *>);
63 LinkerDriver() { coff::Symtab = &Symtab; }
64 void link(llvm::ArrayRef<const char *> Args);
66 // Used by the resolver to parse .drectve section contents.
67 void parseDirectives(StringRef S);
69 // Used by ArchiveFile to enqueue members.
70 void enqueueArchiveMember(const Archive::Child &C, StringRef SymName,
71 StringRef ParentName);
77 std::unique_ptr<CpioFile> Cpio; // for /linkrepro
79 // Opens a file. Path has to be resolved already.
80 MemoryBufferRef openFile(StringRef Path);
82 // Searches a file from search paths.
83 Optional<StringRef> findFile(StringRef Filename);
84 Optional<StringRef> findLib(StringRef Filename);
85 StringRef doFindFile(StringRef Filename);
86 StringRef doFindLib(StringRef Filename);
88 // Parses LIB environment which contains a list of search paths.
89 void addLibSearchPaths();
91 // Library search path. The first element is always "" (current directory).
92 std::vector<StringRef> SearchPaths;
93 std::set<std::string> VisitedFiles;
94 std::set<std::string> VisitedLibs;
96 SymbolBody *addUndefined(StringRef Sym);
97 StringRef mangle(StringRef Sym);
99 // Windows specific -- "main" is not the only main function in Windows.
100 // You can choose one from these four -- {w,}{WinMain,main}.
101 // There are four different entry point functions for them,
102 // {w,}{WinMain,main}CRTStartup, respectively. The linker needs to
103 // choose the right one depending on which "main" function is defined.
104 // This function looks up the symbol table and resolve corresponding
106 StringRef findDefaultEntry();
107 WindowsSubsystem inferSubsystem();
109 MemoryBufferRef takeBuffer(std::unique_ptr<MemoryBuffer> MB);
110 void addBuffer(std::unique_ptr<MemoryBuffer> MB);
111 void addArchiveBuffer(MemoryBufferRef MBRef, StringRef SymName,
112 StringRef ParentName);
114 void enqueuePath(StringRef Path);
116 void enqueueTask(std::function<void()> Task);
119 // Driver is the owner of all opened files.
120 // InputFiles have MemoryBufferRefs to them.
121 std::vector<std::unique_ptr<MemoryBuffer>> OwningMBs;
123 std::list<std::function<void()>> TaskQueue;
124 std::vector<StringRef> FilePaths;
125 std::vector<MemoryBufferRef> Resources;
128 void parseModuleDefs(MemoryBufferRef MB);
129 void writeImportLibrary();
131 // Functions below this line are defined in DriverUtils.cpp.
133 void printHelp(const char *Argv0);
135 // For /machine option.
136 MachineTypes getMachineType(StringRef Arg);
137 StringRef machineToStr(MachineTypes MT);
139 // Parses a string in the form of "<integer>[,<integer>]".
140 void parseNumbers(StringRef Arg, uint64_t *Addr, uint64_t *Size = nullptr);
142 // Parses a string in the form of "<integer>[.<integer>]".
143 // Minor's default value is 0.
144 void parseVersion(StringRef Arg, uint32_t *Major, uint32_t *Minor);
146 // Parses a string in the form of "<subsystem>[,<integer>[.<integer>]]".
147 void parseSubsystem(StringRef Arg, WindowsSubsystem *Sys, uint32_t *Major,
150 void parseAlternateName(StringRef);
151 void parseMerge(StringRef);
152 void parseSection(StringRef);
154 // Parses a string in the form of "EMBED[,=<integer>]|NO".
155 void parseManifest(StringRef Arg);
157 // Parses a string in the form of "level=<string>|uiAccess=<string>"
158 void parseManifestUAC(StringRef Arg);
160 // Create a resource file containing a manifest XML.
161 std::unique_ptr<MemoryBuffer> createManifestRes();
162 void createSideBySideManifest();
164 // Used for dllexported symbols.
165 Export parseExport(StringRef Arg);
167 void assignExportOrdinals();
169 // Parses a string in the form of "key=value" and check
170 // if value matches previous values for the key.
171 // This feature used in the directive section to reject
172 // incompatible objects.
173 void checkFailIfMismatch(StringRef Arg);
175 // Convert Windows resource files (.res files) to a .obj file
177 std::unique_ptr<MemoryBuffer>
178 convertResToCOFF(const std::vector<MemoryBufferRef> &MBs);
180 // Create enum with OPT_xxx values for each option in Options.td
183 #define OPTION(_1, _2, ID, _4, _5, _6, _7, _8, _9, _10, _11) OPT_##ID,
184 #include "Options.inc"