1 //===- Config.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_COFF_CONFIG_H 10 #define LLD_COFF_CONFIG_H 11 12 #include "llvm/ADT/StringMap.h" 13 #include "llvm/ADT/StringRef.h" 14 #include "llvm/Object/COFF.h" 15 #include "llvm/Support/CachePruning.h" 16 #include <cstdint> 17 #include <map> 18 #include <set> 19 #include <string> 20 21 namespace lld { 22 namespace coff { 23 24 using llvm::COFF::IMAGE_FILE_MACHINE_UNKNOWN; 25 using llvm::COFF::WindowsSubsystem; 26 using llvm::StringRef; 27 class DefinedAbsolute; 28 class DefinedRelative; 29 class StringChunk; 30 class Symbol; 31 class InputFile; 32 33 // Short aliases. 34 static const auto AMD64 = llvm::COFF::IMAGE_FILE_MACHINE_AMD64; 35 static const auto ARM64 = llvm::COFF::IMAGE_FILE_MACHINE_ARM64; 36 static const auto ARMNT = llvm::COFF::IMAGE_FILE_MACHINE_ARMNT; 37 static const auto I386 = llvm::COFF::IMAGE_FILE_MACHINE_I386; 38 39 // Represents an /export option. 40 struct Export { 41 StringRef name; // N in /export:N or /export:E=N 42 StringRef extName; // E in /export:E=N 43 Symbol *sym = nullptr; 44 uint16_t ordinal = 0; 45 bool noname = false; 46 bool data = false; 47 bool isPrivate = false; 48 bool constant = false; 49 50 // If an export is a form of /export:foo=dllname.bar, that means 51 // that foo should be exported as an alias to bar in the DLL. 52 // forwardTo is set to "dllname.bar" part. Usually empty. 53 StringRef forwardTo; 54 StringChunk *forwardChunk = nullptr; 55 56 // True if this /export option was in .drectves section. 57 bool directives = false; 58 StringRef symbolName; 59 StringRef exportName; // Name in DLL 60 61 bool operator==(const Export &e) { 62 return (name == e.name && extName == e.extName && 63 ordinal == e.ordinal && noname == e.noname && 64 data == e.data && isPrivate == e.isPrivate); 65 } 66 }; 67 68 enum class DebugType { 69 None = 0x0, 70 CV = 0x1, /// CodeView 71 PData = 0x2, /// Procedure Data 72 Fixup = 0x4, /// Relocation Table 73 }; 74 75 enum class GuardCFLevel { 76 Off, 77 NoLongJmp, // Emit gfids but no longjmp tables 78 Full, // Enable all protections. 79 }; 80 81 // Global configuration. 82 struct Configuration { 83 enum ManifestKind { SideBySide, Embed, No }; 84 bool is64() { return machine == AMD64 || machine == ARM64; } 85 86 llvm::COFF::MachineTypes machine = IMAGE_FILE_MACHINE_UNKNOWN; 87 size_t wordsize; 88 bool verbose = false; 89 WindowsSubsystem subsystem = llvm::COFF::IMAGE_SUBSYSTEM_UNKNOWN; 90 Symbol *entry = nullptr; 91 bool noEntry = false; 92 std::string outputFile; 93 std::string importName; 94 bool demangle = true; 95 bool doGC = true; 96 bool doICF = true; 97 bool tailMerge; 98 bool relocatable = true; 99 bool forceMultiple = false; 100 bool forceMultipleRes = false; 101 bool forceUnresolved = false; 102 bool debug = false; 103 bool debugDwarf = false; 104 bool debugGHashes = false; 105 bool debugSymtab = false; 106 bool showTiming = false; 107 bool showSummary = false; 108 unsigned debugTypes = static_cast<unsigned>(DebugType::None); 109 std::vector<std::string> natvisFiles; 110 llvm::SmallString<128> pdbAltPath; 111 llvm::SmallString<128> pdbPath; 112 llvm::SmallString<128> pdbSourcePath; 113 std::vector<llvm::StringRef> argv; 114 115 // Symbols in this set are considered as live by the garbage collector. 116 std::vector<Symbol *> gcroot; 117 118 std::set<std::string> noDefaultLibs; 119 bool noDefaultLibAll = false; 120 121 // True if we are creating a DLL. 122 bool dll = false; 123 StringRef implib; 124 std::vector<Export> exports; 125 std::set<std::string> delayLoads; 126 std::map<std::string, int> dllOrder; 127 Symbol *delayLoadHelper = nullptr; 128 129 bool saveTemps = false; 130 131 // /guard:cf 132 GuardCFLevel guardCF = GuardCFLevel::Off; 133 134 // Used for SafeSEH. 135 bool safeSEH = false; 136 Symbol *sehTable = nullptr; 137 Symbol *sehCount = nullptr; 138 139 // Used for /opt:lldlto=N 140 unsigned ltoo = 2; 141 142 // Used for /opt:lldltojobs=N 143 unsigned thinLTOJobs = 0; 144 // Used for /opt:lldltopartitions=N 145 unsigned ltoPartitions = 1; 146 147 // Used for /opt:lldltocache=path 148 StringRef ltoCache; 149 // Used for /opt:lldltocachepolicy=policy 150 llvm::CachePruningPolicy ltoCachePolicy; 151 152 // Used for /merge:from=to (e.g. /merge:.rdata=.text) 153 std::map<StringRef, StringRef> merge; 154 155 // Used for /section=.name,{DEKPRSW} to set section attributes. 156 std::map<StringRef, uint32_t> section; 157 158 // Options for manifest files. 159 ManifestKind manifest = No; 160 int manifestID = 1; 161 StringRef manifestDependency; 162 bool manifestUAC = true; 163 std::vector<std::string> manifestInput; 164 StringRef manifestLevel = "'asInvoker'"; 165 StringRef manifestUIAccess = "'false'"; 166 StringRef manifestFile; 167 168 // Used for /aligncomm. 169 std::map<std::string, int> alignComm; 170 171 // Used for /failifmismatch. 172 std::map<StringRef, std::pair<StringRef, InputFile *>> mustMatch; 173 174 // Used for /alternatename. 175 std::map<StringRef, StringRef> alternateNames; 176 177 // Used for /order. 178 llvm::StringMap<int> order; 179 180 // Used for /lldmap. 181 std::string mapFile; 182 183 // Used for /thinlto-index-only: 184 llvm::StringRef thinLTOIndexOnlyArg; 185 186 // Used for /thinlto-object-prefix-replace: 187 std::pair<llvm::StringRef, llvm::StringRef> thinLTOPrefixReplace; 188 189 // Used for /thinlto-object-suffix-replace: 190 std::pair<llvm::StringRef, llvm::StringRef> thinLTOObjectSuffixReplace; 191 192 uint64_t align = 4096; 193 uint64_t imageBase = -1; 194 uint64_t fileAlign = 512; 195 uint64_t stackReserve = 1024 * 1024; 196 uint64_t stackCommit = 4096; 197 uint64_t heapReserve = 1024 * 1024; 198 uint64_t heapCommit = 4096; 199 uint32_t majorImageVersion = 0; 200 uint32_t minorImageVersion = 0; 201 uint32_t majorOSVersion = 6; 202 uint32_t minorOSVersion = 0; 203 uint32_t timestamp = 0; 204 uint32_t functionPadMin = 0; 205 bool dynamicBase = true; 206 bool allowBind = true; 207 bool nxCompat = true; 208 bool allowIsolation = true; 209 bool terminalServerAware = true; 210 bool largeAddressAware = false; 211 bool highEntropyVA = false; 212 bool appContainer = false; 213 bool mingw = false; 214 bool warnMissingOrderSymbol = true; 215 bool warnLocallyDefinedImported = true; 216 bool warnDebugInfoUnusable = true; 217 bool incremental = true; 218 bool integrityCheck = false; 219 bool killAt = false; 220 bool repro = false; 221 bool swaprunCD = false; 222 bool swaprunNet = false; 223 bool thinLTOEmitImportsFiles; 224 bool thinLTOIndexOnly; 225 }; 226 227 extern Configuration *config; 228 229 } // namespace coff 230 } // namespace lld 231 232 #endif 233