lld/COFF/Config.h

   1 //===- Config.h -------------------------------------------------*- C++ -*-===//
   2 //
   3 //                             The LLVM Linker
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef LLD_COFF_CONFIG_H
  11 #define LLD_COFF_CONFIG_H
  12
  13 #include "llvm/ADT/StringRef.h"
  14 #include "llvm/Object/COFF.h"
  15 #include <cstdint>
  16 #include <map>
  17 #include <set>
  18 #include <string>
  19
  20 namespace lld {
  21 namespace coff {
  22
  23 using llvm::COFF::IMAGE_FILE_MACHINE_UNKNOWN;
  24 using llvm::COFF::WindowsSubsystem;
  25 using llvm::StringRef;
  26 class DefinedAbsolute;
  27 class DefinedRelative;
  28 class StringChunk;
  29 struct Symbol;
  30 class SymbolBody;
  31
  32 // Short aliases.
  33 static const auto AMD64 = llvm::COFF::IMAGE_FILE_MACHINE_AMD64;
  34 static const auto ARM64 = llvm::COFF::IMAGE_FILE_MACHINE_ARM64;
  35 static const auto ARMNT = llvm::COFF::IMAGE_FILE_MACHINE_ARMNT;
  36 static const auto I386 = llvm::COFF::IMAGE_FILE_MACHINE_I386;
  37
  38 // Represents an /export option.
  39 struct Export {
  40   StringRef Name;       // N in /export:N or /export:E=N
  41   StringRef ExtName;    // E in /export:E=N
  42   SymbolBody *Sym = nullptr;
  43   uint16_t Ordinal = 0;
  44   bool Noname = false;
  45   bool Data = false;
  46   bool Private = false;
  47   bool Constant = false;
  48
  49   // If an export is a form of /export:foo=dllname.bar, that means
  50   // that foo should be exported as an alias to bar in the DLL.
  51   // ForwardTo is set to "dllname.bar" part. Usually empty.
  52   StringRef ForwardTo;
  53   StringChunk *ForwardChunk = nullptr;
  54
  55   // True if this /export option was in .drectves section.
  56   bool Directives = false;
  57   StringRef SymbolName;
  58   StringRef ExportName; // Name in DLL
  59
  60   bool operator==(const Export &E) {
  61     return (Name == E.Name && ExtName == E.ExtName &&
  62             Ordinal == E.Ordinal && Noname == E.Noname &&
  63             Data == E.Data && Private == E.Private);
  64   }
  65 };
  66
  67 enum class DebugType {
  68   None  = 0x0,
  69   CV    = 0x1,  /// CodeView
  70   PData = 0x2,  /// Procedure Data
  71   Fixup = 0x4,  /// Relocation Table
  72 };
  73
  74 // Global configuration.
  75 struct Configuration {
  76   enum ManifestKind { SideBySide, Embed, No };
  77   bool is64() { return Machine == AMD64 || Machine == ARM64; }
  78
  79   llvm::COFF::MachineTypes Machine = IMAGE_FILE_MACHINE_UNKNOWN;
  80   bool Verbose = false;
  81   WindowsSubsystem Subsystem = llvm::COFF::IMAGE_SUBSYSTEM_UNKNOWN;
  82   SymbolBody *Entry = nullptr;
  83   bool NoEntry = false;
  84   std::string OutputFile;
  85   std::string ImportName;
  86   bool ColorDiagnostics;
  87   bool DoGC = true;
  88   bool DoICF = true;
  89   uint64_t ErrorLimit = 20;
  90   bool Relocatable = true;
  91   bool Force = false;
  92   bool Debug = false;
  93   bool WriteSymtab = true;
  94   unsigned DebugTypes = static_cast<unsigned>(DebugType::None);
  95   llvm::SmallString<128> PDBPath;
  96   std::vector<llvm::StringRef> Argv;
  97
  98   // Symbols in this set are considered as live by the garbage collector.
  99   std::set<SymbolBody *> GCRoot;
 100
 101   std::set<StringRef> NoDefaultLibs;
 102   bool NoDefaultLibAll = false;
 103
 104   // True if we are creating a DLL.
 105   bool DLL = false;
 106   StringRef Implib;
 107   std::vector<Export> Exports;
 108   std::set<std::string> DelayLoads;
 109   std::map<std::string, int> DLLOrder;
 110   SymbolBody *DelayLoadHelper = nullptr;
 111
 112   bool SaveTemps = false;
 113
 114   // Used for SafeSEH.
 115   Symbol *SEHTable = nullptr;
 116   Symbol *SEHCount = nullptr;
 117
 118   // Used for /opt:lldlto=N
 119   unsigned LTOOptLevel = 2;
 120
 121   // Used for /opt:lldltojobs=N
 122   unsigned LTOJobs = 0;
 123   // Used for /opt:lldltopartitions=N
 124   unsigned LTOPartitions = 1;
 125
 126   // Used for /merge:from=to (e.g. /merge:.rdata=.text)
 127   std::map<StringRef, StringRef> Merge;
 128
 129   // Used for /section=.name,{DEKPRSW} to set section attributes.
 130   std::map<StringRef, uint32_t> Section;
 131
 132   // Options for manifest files.
 133   ManifestKind Manifest = No;
 134   int ManifestID = 1;
 135   StringRef ManifestDependency;
 136   bool ManifestUAC = true;
 137   std::vector<std::string> ManifestInput;
 138   StringRef ManifestLevel = "'asInvoker'";
 139   StringRef ManifestUIAccess = "'false'";
 140   StringRef ManifestFile;
 141
 142   // Used for /failifmismatch.
 143   std::map<StringRef, StringRef> MustMatch;
 144
 145   // Used for /alternatename.
 146   std::map<StringRef, StringRef> AlternateNames;
 147
 148   // Used for /lldmap.
 149   std::string MapFile;
 150
 151   uint64_t ImageBase = -1;
 152   uint64_t StackReserve = 1024 * 1024;
 153   uint64_t StackCommit = 4096;
 154   uint64_t HeapReserve = 1024 * 1024;
 155   uint64_t HeapCommit = 4096;
 156   uint32_t MajorImageVersion = 0;
 157   uint32_t MinorImageVersion = 0;
 158   uint32_t MajorOSVersion = 6;
 159   uint32_t MinorOSVersion = 0;
 160   bool DynamicBase = true;
 161   bool NxCompat = true;
 162   bool AllowIsolation = true;
 163   bool TerminalServerAware = true;
 164   bool LargeAddressAware = false;
 165   bool HighEntropyVA = false;
 166   bool AppContainer = false;
 167 };
 168
 169 extern Configuration *Config;
 170
 171 } // namespace coff
 172 } // namespace lld
 173
 174 #endif