tools/llvm-cvtres/llvm-cvtres.cpp

   1 //===- llvm-cvtres.cpp - Serialize .res files into .obj ---------*- 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 // Serialize .res files into .obj files.  This is intended to be a
  10 // platform-independent port of Microsoft's cvtres.exe.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/ADT/StringSwitch.h"
  15 #include "llvm/Object/Binary.h"
  16 #include "llvm/Object/WindowsMachineFlag.h"
  17 #include "llvm/Object/WindowsResource.h"
  18 #include "llvm/Option/Arg.h"
  19 #include "llvm/Option/ArgList.h"
  20 #include "llvm/Option/Option.h"
  21 #include "llvm/Support/BinaryStreamError.h"
  22 #include "llvm/Support/Error.h"
  23 #include "llvm/Support/InitLLVM.h"
  24 #include "llvm/Support/ManagedStatic.h"
  25 #include "llvm/Support/Path.h"
  26 #include "llvm/Support/PrettyStackTrace.h"
  27 #include "llvm/Support/Process.h"
  28 #include "llvm/Support/ScopedPrinter.h"
  29 #include "llvm/Support/Signals.h"
  30 #include "llvm/Support/raw_ostream.h"
  31
  32 #include <system_error>
  33
  34 using namespace llvm;
  35 using namespace object;
  36
  37 namespace {
  38
  39 enum ID {
  40   OPT_INVALID = 0, // This is not an option ID.
  41 #define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM,  \
  42                HELPTEXT, METAVAR, VALUES)                                      \
  43   OPT_##ID,
  44 #include "Opts.inc"
  45 #undef OPTION
  46 };
  47
  48 #define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
  49 #include "Opts.inc"
  50 #undef PREFIX
  51
  52 static const opt::OptTable::Info InfoTable[] = {
  53 #define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM,  \
  54                HELPTEXT, METAVAR, VALUES)                                      \
  55   {                                                                            \
  56       PREFIX,      NAME,      HELPTEXT,                                        \
  57       METAVAR,     OPT_##ID,  opt::Option::KIND##Class,                        \
  58       PARAM,       FLAGS,     OPT_##GROUP,                                     \
  59       OPT_##ALIAS, ALIASARGS, VALUES},
  60 #include "Opts.inc"
  61 #undef OPTION
  62 };
  63
  64 class CvtResOptTable : public opt::OptTable {
  65 public:
  66   CvtResOptTable() : OptTable(InfoTable, true) {}
  67 };
  68 }
  69
  70 LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg) {
  71   errs() << Msg;
  72   exit(1);
  73 }
  74
  75 static void reportError(StringRef Input, std::error_code EC) {
  76   reportError(Twine(Input) + ": " + EC.message() + ".\n");
  77 }
  78
  79 void error(std::error_code EC) {
  80   if (!EC)
  81     return;
  82   reportError(EC.message() + ".\n");
  83 }
  84
  85 void error(Error EC) {
  86   if (!EC)
  87     return;
  88   handleAllErrors(std::move(EC),
  89                   [&](const ErrorInfoBase &EI) { reportError(EI.message()); });
  90 }
  91
  92 static uint32_t getTime() {
  93   std::time_t Now = time(nullptr);
  94   if (Now < 0 || !isUInt<32>(Now))
  95     return UINT32_MAX;
  96   return static_cast<uint32_t>(Now);
  97 }
  98
  99 template <typename T> T error(Expected<T> EC) {
 100   if (!EC)
 101     error(EC.takeError());
 102   return std::move(EC.get());
 103 }
 104
 105 int main(int Argc, const char **Argv) {
 106   InitLLVM X(Argc, Argv);
 107
 108   CvtResOptTable T;
 109   unsigned MAI, MAC;
 110   ArrayRef<const char *> ArgsArr = makeArrayRef(Argv + 1, Argc - 1);
 111   opt::InputArgList InputArgs = T.ParseArgs(ArgsArr, MAI, MAC);
 112
 113   if (InputArgs.hasArg(OPT_HELP)) {
 114     T.PrintHelp(outs(), "llvm-cvtres [options] file...", "Resource Converter");
 115     return 0;
 116   }
 117
 118   bool Verbose = InputArgs.hasArg(OPT_VERBOSE);
 119
 120   COFF::MachineTypes MachineType;
 121
 122   if (opt::Arg *Arg = InputArgs.getLastArg(OPT_MACHINE)) {
 123     MachineType = getMachineType(Arg->getValue());
 124     if (MachineType == COFF::IMAGE_FILE_MACHINE_UNKNOWN) {
 125       reportError(Twine("Unsupported machine architecture ") + Arg->getValue() +
 126                   "\n");
 127     }
 128   } else {
 129     if (Verbose)
 130       outs() << "Machine architecture not specified; assumed X64.\n";
 131     MachineType = COFF::IMAGE_FILE_MACHINE_AMD64;
 132   }
 133
 134   std::vector<std::string> InputFiles = InputArgs.getAllArgValues(OPT_INPUT);
 135
 136   if (InputFiles.size() == 0) {
 137     reportError("No input file specified.\n");
 138   }
 139
 140   SmallString<128> OutputFile;
 141
 142   if (opt::Arg *Arg = InputArgs.getLastArg(OPT_OUT)) {
 143     OutputFile = Arg->getValue();
 144   } else {
 145     OutputFile = sys::path::filename(StringRef(InputFiles[0]));
 146     sys::path::replace_extension(OutputFile, ".obj");
 147   }
 148
 149   uint32_t DateTimeStamp;
 150   if (llvm::opt::Arg *Arg = InputArgs.getLastArg(OPT_TIMESTAMP)) {
 151     StringRef Value(Arg->getValue());
 152     if (Value.getAsInteger(0, DateTimeStamp))
 153       reportError(Twine("invalid timestamp: ") + Value +
 154             ".  Expected 32-bit integer\n");
 155   } else {
 156     DateTimeStamp = getTime();
 157   }
 158
 159   if (Verbose)
 160     outs() << "Machine: " << machineToStr(MachineType) << '\n';
 161
 162   WindowsResourceParser Parser;
 163
 164   for (const auto &File : InputFiles) {
 165     Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
 166     if (!BinaryOrErr)
 167       reportError(File, errorToErrorCode(BinaryOrErr.takeError()));
 168
 169     Binary &Binary = *BinaryOrErr.get().getBinary();
 170
 171     WindowsResource *RF = dyn_cast<WindowsResource>(&Binary);
 172     if (!RF)
 173       reportError(File + ": unrecognized file format.\n");
 174
 175     if (Verbose) {
 176       int EntryNumber = 0;
 177       ResourceEntryRef Entry = error(RF->getHeadEntry());
 178       bool End = false;
 179       while (!End) {
 180         error(Entry.moveNext(End));
 181         EntryNumber++;
 182       }
 183       outs() << "Number of resources: " << EntryNumber << "\n";
 184     }
 185
 186     std::vector<std::string> Duplicates;
 187     error(Parser.parse(RF, Duplicates));
 188     for (const auto& DupeDiag : Duplicates)
 189       reportError(DupeDiag);
 190   }
 191
 192   if (Verbose) {
 193     Parser.printTree(outs());
 194   }
 195
 196   std::unique_ptr<MemoryBuffer> OutputBuffer =
 197       error(llvm::object::writeWindowsResourceCOFF(MachineType, Parser,
 198                                                    DateTimeStamp));
 199   auto FileOrErr =
 200       FileOutputBuffer::create(OutputFile, OutputBuffer->getBufferSize());
 201   if (!FileOrErr)
 202     reportError(OutputFile, errorToErrorCode(FileOrErr.takeError()));
 203   std::unique_ptr<FileOutputBuffer> FileBuffer = std::move(*FileOrErr);
 204   std::copy(OutputBuffer->getBufferStart(), OutputBuffer->getBufferEnd(),
 205             FileBuffer->getBufferStart());
 206   error(FileBuffer->commit());
 207
 208   if (Verbose) {
 209     Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(OutputFile);
 210     if (!BinaryOrErr)
 211       reportError(OutputFile, errorToErrorCode(BinaryOrErr.takeError()));
 212     Binary &Binary = *BinaryOrErr.get().getBinary();
 213     ScopedPrinter W(errs());
 214     W.printBinaryBlock("Output File Raw Data", Binary.getData());
 215   }
 216
 217   return 0;
 218 }