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/MapVector.h" 13 #include "llvm/ADT/SetVector.h" 14 #include "llvm/ADT/StringMap.h" 15 #include "llvm/ADT/StringRef.h" 16 #include "llvm/Object/COFF.h" 17 #include "llvm/Support/CachePruning.h" 18 #include <cstdint> 19 #include <map> 20 #include <set> 21 #include <string> 22 23 namespace lld { 24 namespace coff { 25 26 using llvm::COFF::IMAGE_FILE_MACHINE_UNKNOWN; 27 using llvm::COFF::WindowsSubsystem; 28 using llvm::StringRef; 29 class DefinedAbsolute; 30 class DefinedRelative; 31 class StringChunk; 32 class Symbol; 33 class InputFile; 34 class SectionChunk; 35 36 // Short aliases. 37 static const auto AMD64 = llvm::COFF::IMAGE_FILE_MACHINE_AMD64; 38 static const auto ARM64 = llvm::COFF::IMAGE_FILE_MACHINE_ARM64; 39 static const auto ARMNT = llvm::COFF::IMAGE_FILE_MACHINE_ARMNT; 40 static const auto I386 = llvm::COFF::IMAGE_FILE_MACHINE_I386; 41 42 // Represents an /export option. 43 struct Export { 44 StringRef name; // N in /export:N or /export:E=N 45 StringRef extName; // E in /export:E=N 46 Symbol *sym = nullptr; 47 uint16_t ordinal = 0; 48 bool noname = false; 49 bool data = false; 50 bool isPrivate = false; 51 bool constant = false; 52 53 // If an export is a form of /export:foo=dllname.bar, that means 54 // that foo should be exported as an alias to bar in the DLL. 55 // forwardTo is set to "dllname.bar" part. Usually empty. 56 StringRef forwardTo; 57 StringChunk *forwardChunk = nullptr; 58 59 // True if this /export option was in .drectves section. 60 bool directives = false; 61 StringRef symbolName; 62 StringRef exportName; // Name in DLL 63 64 bool operator==(const Export &e) { 65 return (name == e.name && extName == e.extName && 66 ordinal == e.ordinal && noname == e.noname && 67 data == e.data && isPrivate == e.isPrivate); 68 } 69 }; 70 71 enum class DebugType { 72 None = 0x0, 73 CV = 0x1, /// CodeView 74 PData = 0x2, /// Procedure Data 75 Fixup = 0x4, /// Relocation Table 76 }; 77 78 enum GuardCFLevel { 79 Off = 0x0, 80 CF = 0x1, /// Emit gfids tables 81 LongJmp = 0x2, /// Emit longjmp tables 82 EHCont = 0x4, /// Emit ehcont tables 83 All = 0x7 /// Enable all protections 84 }; 85 86 enum class ICFLevel { 87 None, 88 Safe, // Safe ICF for all sections. 89 All, // Aggressive ICF for code, but safe ICF for data, similar to MSVC's 90 // behavior. 91 }; 92 93 // Global configuration. 94 struct Configuration { 95 enum ManifestKind { Default, SideBySide, Embed, No }; 96 bool is64() { return machine == AMD64 || machine == ARM64; } 97 98 llvm::COFF::MachineTypes machine = IMAGE_FILE_MACHINE_UNKNOWN; 99 size_t wordsize; 100 bool verbose = false; 101 WindowsSubsystem subsystem = llvm::COFF::IMAGE_SUBSYSTEM_UNKNOWN; 102 Symbol *entry = nullptr; 103 bool noEntry = false; 104 std::string outputFile; 105 std::string importName; 106 bool demangle = true; 107 bool doGC = true; 108 ICFLevel doICF = ICFLevel::None; 109 bool tailMerge; 110 bool relocatable = true; 111 bool forceMultiple = false; 112 bool forceMultipleRes = false; 113 bool forceUnresolved = false; 114 bool debug = false; 115 bool debugDwarf = false; 116 bool debugGHashes = false; 117 bool debugSymtab = false; 118 bool driver = false; 119 bool driverUponly = false; 120 bool driverWdm = false; 121 bool showTiming = false; 122 bool showSummary = false; 123 unsigned debugTypes = static_cast<unsigned>(DebugType::None); 124 std::vector<std::string> natvisFiles; 125 llvm::StringMap<std::string> namedStreams; 126 llvm::SmallString<128> pdbAltPath; 127 int pdbPageSize = 4096; 128 llvm::SmallString<128> pdbPath; 129 llvm::SmallString<128> pdbSourcePath; 130 std::vector<llvm::StringRef> argv; 131 132 // Symbols in this set are considered as live by the garbage collector. 133 std::vector<Symbol *> gcroot; 134 135 std::set<std::string> noDefaultLibs; 136 bool noDefaultLibAll = false; 137 138 // True if we are creating a DLL. 139 bool dll = false; 140 StringRef implib; 141 std::vector<Export> exports; 142 bool hadExplicitExports; 143 std::set<std::string> delayLoads; 144 std::map<std::string, int> dllOrder; 145 Symbol *delayLoadHelper = nullptr; 146 147 bool saveTemps = false; 148 149 // /guard:cf 150 int guardCF = GuardCFLevel::Off; 151 152 // Used for SafeSEH. 153 bool safeSEH = false; 154 Symbol *sehTable = nullptr; 155 Symbol *sehCount = nullptr; 156 bool noSEH = false; 157 158 // Used for /opt:lldlto=N 159 unsigned ltoo = 2; 160 161 // Used for /opt:lldltojobs=N 162 std::string thinLTOJobs; 163 // Used for /opt:lldltopartitions=N 164 unsigned ltoPartitions = 1; 165 166 // Used for /opt:lldltocache=path 167 StringRef ltoCache; 168 // Used for /opt:lldltocachepolicy=policy 169 llvm::CachePruningPolicy ltoCachePolicy; 170 171 // Used for /opt:[no]ltonewpassmanager 172 bool ltoNewPassManager = false; 173 // Used for /opt:[no]ltodebugpassmanager 174 bool ltoDebugPassManager = false; 175 176 // Used for /merge:from=to (e.g. /merge:.rdata=.text) 177 std::map<StringRef, StringRef> merge; 178 179 // Used for /section=.name,{DEKPRSW} to set section attributes. 180 std::map<StringRef, uint32_t> section; 181 182 // Options for manifest files. 183 ManifestKind manifest = Default; 184 int manifestID = 1; 185 llvm::SetVector<StringRef> manifestDependencies; 186 bool manifestUAC = true; 187 std::vector<std::string> manifestInput; 188 StringRef manifestLevel = "'asInvoker'"; 189 StringRef manifestUIAccess = "'false'"; 190 StringRef manifestFile; 191 192 // Used for /aligncomm. 193 std::map<std::string, int> alignComm; 194 195 // Used for /failifmismatch. 196 std::map<StringRef, std::pair<StringRef, InputFile *>> mustMatch; 197 198 // Used for /alternatename. 199 std::map<StringRef, StringRef> alternateNames; 200 201 // Used for /order. 202 llvm::StringMap<int> order; 203 204 // Used for /lldmap. 205 std::string lldmapFile; 206 207 // Used for /map. 208 std::string mapFile; 209 210 // Used for /thinlto-index-only: 211 llvm::StringRef thinLTOIndexOnlyArg; 212 213 // Used for /thinlto-object-prefix-replace: 214 std::pair<llvm::StringRef, llvm::StringRef> thinLTOPrefixReplace; 215 216 // Used for /thinlto-object-suffix-replace: 217 std::pair<llvm::StringRef, llvm::StringRef> thinLTOObjectSuffixReplace; 218 219 // Used for /lto-obj-path: 220 llvm::StringRef ltoObjPath; 221 222 // Used for /lto-cs-profile-generate: 223 bool ltoCSProfileGenerate = false; 224 225 // Used for /lto-cs-profile-path 226 llvm::StringRef ltoCSProfileFile; 227 228 // Used for /lto-pgo-warn-mismatch: 229 bool ltoPGOWarnMismatch = true; 230 231 // Used for /call-graph-ordering-file: 232 llvm::MapVector<std::pair<const SectionChunk *, const SectionChunk *>, 233 uint64_t> 234 callGraphProfile; 235 bool callGraphProfileSort = false; 236 237 // Used for /print-symbol-order: 238 StringRef printSymbolOrder; 239 240 uint64_t align = 4096; 241 uint64_t imageBase = -1; 242 uint64_t fileAlign = 512; 243 uint64_t stackReserve = 1024 * 1024; 244 uint64_t stackCommit = 4096; 245 uint64_t heapReserve = 1024 * 1024; 246 uint64_t heapCommit = 4096; 247 uint32_t majorImageVersion = 0; 248 uint32_t minorImageVersion = 0; 249 // If changing the default os/subsys version here, update the default in 250 // the MinGW driver accordingly. 251 uint32_t majorOSVersion = 6; 252 uint32_t minorOSVersion = 0; 253 uint32_t majorSubsystemVersion = 6; 254 uint32_t minorSubsystemVersion = 0; 255 uint32_t timestamp = 0; 256 uint32_t functionPadMin = 0; 257 bool dynamicBase = true; 258 bool allowBind = true; 259 bool cetCompat = false; 260 bool nxCompat = true; 261 bool allowIsolation = true; 262 bool terminalServerAware = true; 263 bool largeAddressAware = false; 264 bool highEntropyVA = false; 265 bool appContainer = false; 266 bool mingw = false; 267 bool warnMissingOrderSymbol = true; 268 bool warnLocallyDefinedImported = true; 269 bool warnDebugInfoUnusable = true; 270 bool warnLongSectionNames = true; 271 bool warnStdcallFixup = true; 272 bool incremental = true; 273 bool integrityCheck = false; 274 bool killAt = false; 275 bool repro = false; 276 bool swaprunCD = false; 277 bool swaprunNet = false; 278 bool thinLTOEmitImportsFiles; 279 bool thinLTOIndexOnly; 280 bool autoImport = false; 281 bool pseudoRelocs = false; 282 bool stdcallFixup = false; 283 }; 284 285 extern Configuration *config; 286 287 } // namespace coff 288 } // namespace lld 289 290 #endif 291