1 files changed, 259 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/tools/llvm-objcopy/llvm-objcopy.cpp b/contrib/llvm-project/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
new file mode 100644
index 000000000000..a24cd889b83f
--- /dev/null
+++ b/contrib/llvm-project/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
@@ -0,0 +1,259 @@
+//===- llvm-objcopy.cpp ---------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "ObjcopyOptions.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/ObjCopy/COFF/COFFConfig.h"
+#include "llvm/ObjCopy/COFF/COFFObjcopy.h"
+#include "llvm/ObjCopy/CommonConfig.h"
+#include "llvm/ObjCopy/ELF/ELFConfig.h"
+#include "llvm/ObjCopy/ELF/ELFObjcopy.h"
+#include "llvm/ObjCopy/MachO/MachOConfig.h"
+#include "llvm/ObjCopy/MachO/MachOObjcopy.h"
+#include "llvm/ObjCopy/ObjCopy.h"
+#include "llvm/ObjCopy/wasm/WasmConfig.h"
+#include "llvm/ObjCopy/wasm/WasmObjcopy.h"
+#include "llvm/Object/Archive.h"
+#include "llvm/Object/ArchiveWriter.h"
+#include "llvm/Object/Binary.h"
+#include "llvm/Object/COFF.h"
+#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Object/ELFTypes.h"
+#include "llvm/Object/Error.h"
+#include "llvm/Object/MachO.h"
+#include "llvm/Object/MachOUniversal.h"
+#include "llvm/Object/Wasm.h"
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/Option/Option.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Errc.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/ErrorOr.h"
+#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/InitLLVM.h"
+#include "llvm/Support/Memory.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/SmallVectorMemoryBuffer.h"
+#include "llvm/Support/StringSaver.h"
+#include "llvm/Support/WithColor.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+#include <cassert>
+#include <cstdlib>
+#include <memory>
+#include <string>
+#include <system_error>
+#include <utility>
+
+using namespace llvm;
+using namespace llvm::objcopy;
+using namespace llvm::object;
+
+// The name this program was invoked as.
+static StringRef ToolName;
+
+static ErrorSuccess reportWarning(Error E) {
+  assert(E);
+  WithColor::warning(errs(), ToolName) << toString(std::move(E)) << '\n';
+  return Error::success();
+}
+
+static Expected<DriverConfig> getDriverConfig(ArrayRef<const char *> Args) {
+  StringRef Stem = sys::path::stem(ToolName);
+  auto Is = [=](StringRef Tool) {
+    // We need to recognize the following filenames:
+    //
+    // llvm-objcopy -> objcopy
+    // strip-10.exe -> strip
+    // powerpc64-unknown-freebsd13-objcopy -> objcopy
+    // llvm-install-name-tool -> install-name-tool
+    auto I = Stem.rfind_insensitive(Tool);
+    return I != StringRef::npos &&
+           (I + Tool.size() == Stem.size() || !isAlnum(Stem[I + Tool.size()]));
+  };
+
+  if (Is("bitcode-strip") || Is("bitcode_strip"))
+    return parseBitcodeStripOptions(Args, reportWarning);
+  else if (Is("strip"))
+    return parseStripOptions(Args, reportWarning);
+  else if (Is("install-name-tool") || Is("install_name_tool"))
+    return parseInstallNameToolOptions(Args);
+  else
+    return parseObjcopyOptions(Args, reportWarning);
+}
+
+/// The function executeObjcopyOnIHex does the dispatch based on the format
+/// of the output specified by the command line options.
+static Error executeObjcopyOnIHex(ConfigManager &ConfigMgr, MemoryBuffer &In,
+                                  raw_ostream &Out) {
+  // TODO: support output formats other than ELF.
+  Expected<const ELFConfig &> ELFConfig = ConfigMgr.getELFConfig();
+  if (!ELFConfig)
+    return ELFConfig.takeError();
+
+  return elf::executeObjcopyOnIHex(ConfigMgr.getCommonConfig(), *ELFConfig, In,
+                                   Out);
+}
+
+/// The function executeObjcopyOnRawBinary does the dispatch based on the format
+/// of the output specified by the command line options.
+static Error executeObjcopyOnRawBinary(ConfigManager &ConfigMgr,
+                                       MemoryBuffer &In, raw_ostream &Out) {
+  const CommonConfig &Config = ConfigMgr.getCommonConfig();
+  switch (Config.OutputFormat) {
+  case FileFormat::ELF:
+  // FIXME: Currently, we call elf::executeObjcopyOnRawBinary even if the
+  // output format is binary/ihex or it's not given. This behavior differs from
+  // GNU objcopy. See https://bugs.llvm.org/show_bug.cgi?id=42171 for details.
+  case FileFormat::Binary:
+  case FileFormat::IHex:
+  case FileFormat::Unspecified:
+    Expected<const ELFConfig &> ELFConfig = ConfigMgr.getELFConfig();
+    if (!ELFConfig)
+      return ELFConfig.takeError();
+
+    return elf::executeObjcopyOnRawBinary(Config, *ELFConfig, In, Out);
+  }
+
+  llvm_unreachable("unsupported output format");
+}
+
+/// The function executeObjcopy does the higher level dispatch based on the type
+/// of input (raw binary, archive or single object file) and takes care of the
+/// format-agnostic modifications, i.e. preserving dates.
+static Error executeObjcopy(ConfigManager &ConfigMgr) {
+  CommonConfig &Config = ConfigMgr.Common;
+
+  Expected<FilePermissionsApplier> PermsApplierOrErr =
+      FilePermissionsApplier::create(Config.InputFilename);
+  if (!PermsApplierOrErr)
+    return PermsApplierOrErr.takeError();
+
+  std::function<Error(raw_ostream & OutFile)> ObjcopyFunc;
+
+  OwningBinary<llvm::object::Binary> BinaryHolder;
+  std::unique_ptr<MemoryBuffer> MemoryBufferHolder;
+
+  if (Config.InputFormat == FileFormat::Binary ||
+      Config.InputFormat == FileFormat::IHex) {
+    ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
+        MemoryBuffer::getFileOrSTDIN(Config.InputFilename);
+    if (!BufOrErr)
+      return createFileError(Config.InputFilename, BufOrErr.getError());
+    MemoryBufferHolder = std::move(*BufOrErr);
+
+    if (Config.InputFormat == FileFormat::Binary)
+      ObjcopyFunc = [&](raw_ostream &OutFile) -> Error {
+        // Handle FileFormat::Binary.
+        return executeObjcopyOnRawBinary(ConfigMgr, *MemoryBufferHolder,
+                                         OutFile);
+      };
+    else
+      ObjcopyFunc = [&](raw_ostream &OutFile) -> Error {
+        // Handle FileFormat::IHex.
+        return executeObjcopyOnIHex(ConfigMgr, *MemoryBufferHolder, OutFile);
+      };
+  } else {
+    Expected<OwningBinary<llvm::object::Binary>> BinaryOrErr =
+        createBinary(Config.InputFilename);
+    if (!BinaryOrErr)
+      return createFileError(Config.InputFilename, BinaryOrErr.takeError());
+    BinaryHolder = std::move(*BinaryOrErr);
+
+    if (Archive *Ar = dyn_cast<Archive>(BinaryHolder.getBinary())) {
+      // Handle Archive.
+      if (Error E = executeObjcopyOnArchive(ConfigMgr, *Ar))
+        return E;
+    } else {
+      // Handle llvm::object::Binary.
+      ObjcopyFunc = [&](raw_ostream &OutFile) -> Error {
+        return executeObjcopyOnBinary(ConfigMgr, *BinaryHolder.getBinary(),
+                                      OutFile);
+      };
+    }
+  }
+
+  if (ObjcopyFunc) {
+    if (Config.SplitDWO.empty()) {
+      // Apply transformations described by Config and store result into
+      // Config.OutputFilename using specified ObjcopyFunc function.
+      if (Error E = writeToOutput(Config.OutputFilename, ObjcopyFunc))
+        return E;
+    } else {
+      Config.ExtractDWO = true;
+      Config.StripDWO = false;
+      // Copy .dwo tables from the Config.InputFilename into Config.SplitDWO
+      // file using specified ObjcopyFunc function.
+      if (Error E = writeToOutput(Config.SplitDWO, ObjcopyFunc))
+        return E;
+      Config.ExtractDWO = false;
+      Config.StripDWO = true;
+      // Apply transformations described by Config, remove .dwo tables and
+      // store result into Config.OutputFilename using specified ObjcopyFunc
+      // function.
+      if (Error E = writeToOutput(Config.OutputFilename, ObjcopyFunc))
+        return E;
+    }
+  }
+
+  if (Error E =
+          PermsApplierOrErr->apply(Config.OutputFilename, Config.PreserveDates))
+    return E;
+
+  if (!Config.SplitDWO.empty())
+    if (Error E =
+            PermsApplierOrErr->apply(Config.SplitDWO, Config.PreserveDates,
+                                     static_cast<sys::fs::perms>(0666)))
+      return E;
+
+  return Error::success();
+}
+
+int llvm_objcopy_main(int argc, char **argv) {
+  InitLLVM X(argc, argv);
+  ToolName = argv[0];
+
+  // Expand response files.
+  // TODO: Move these lines, which are copied from lib/Support/CommandLine.cpp,
+  // into a separate function in the CommandLine library and call that function
+  // here. This is duplicated code.
+  SmallVector<const char *, 20> NewArgv(argv, argv + argc);
+  BumpPtrAllocator A;
+  StringSaver Saver(A);
+  cl::ExpandResponseFiles(Saver,
+                          Triple(sys::getProcessTriple()).isOSWindows()
+                              ? cl::TokenizeWindowsCommandLine
+                              : cl::TokenizeGNUCommandLine,
+                          NewArgv);
+
+  auto Args = ArrayRef(NewArgv).drop_front();
+  Expected<DriverConfig> DriverConfig = getDriverConfig(Args);
+
+  if (!DriverConfig) {
+    logAllUnhandledErrors(DriverConfig.takeError(),
+                          WithColor::error(errs(), ToolName));
+    return 1;
+  }
+  for (ConfigManager &ConfigMgr : DriverConfig->CopyConfigs) {
+    if (Error E = executeObjcopy(ConfigMgr)) {
+      logAllUnhandledErrors(std::move(E), WithColor::error(errs(), ToolName));
+      return 1;
+    }
+  }
+
+  return 0;
+}