[llvm-objcopy] Factor out CopyConfig

In this diff we move out CopyConfig from llvm-oobjcopy.cpp into a separate header CopyConfig.h
to enable us (in the future) reuse this class in the other implementations of objcopy (for coff, mach-o).
Additionally this enables us to unload the complexity from llvm-objcopy.cpp a little bit.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D53006

llvm-svn: 344307

1 files changed, 113 insertions, 0 deletions

diff --git a/llvm/tools/llvm-objcopy/CopyConfig.h b/llvm/tools/llvm-objcopy/CopyConfig.h
new file mode 100644
index 00000000000..203432a11a6
--- /dev/null
+++ b/llvm/tools/llvm-objcopy/CopyConfig.h
@@ -0,0 +1,113 @@
+//===- CopyConfig.h -------------------------------------------------------===//
+//
+//                      The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_OBJCOPY_COPY_CONFIG_H
+#define LLVM_TOOLS_LLVM_OBJCOPY_COPY_CONFIG_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
+// Necessary for llvm::DebugCompressionType::None
+#include "llvm/Target/TargetOptions.h"
+#include <string>
+#include <vector>
+
+namespace llvm {
+namespace objcopy {
+
+// This type keeps track of the machine info for various architectures. This
+// lets us map architecture names to ELF types and the e_machine value of the
+// ELF file.
+struct MachineInfo {
+  uint16_t EMachine;
+  bool Is64Bit;
+  bool IsLittleEndian;
+};
+
+struct SectionRename {
+  StringRef OriginalName;
+  StringRef NewName;
+  Optional<uint64_t> NewFlags;
+};
+
+// Configuration for copying/stripping a single file.
+struct CopyConfig {
+  // Main input/output options
+  StringRef InputFilename;
+  StringRef InputFormat;
+  StringRef OutputFilename;
+  StringRef OutputFormat;
+
+  // Only applicable for --input-format=Binary
+  MachineInfo BinaryArch;
+
+  // Advanced options
+  StringRef AddGnuDebugLink;
+  StringRef SplitDWO;
+  StringRef SymbolsPrefix;
+
+  // Repeated options
+  std::vector<StringRef> AddSection;
+  std::vector<StringRef> DumpSection;
+  std::vector<StringRef> Keep;
+  std::vector<StringRef> OnlyKeep;
+  std::vector<StringRef> SymbolsToGlobalize;
+  std::vector<StringRef> SymbolsToKeep;
+  std::vector<StringRef> SymbolsToLocalize;
+  std::vector<StringRef> SymbolsToRemove;
+  std::vector<StringRef> SymbolsToWeaken;
+  std::vector<StringRef> ToRemove;
+  std::vector<std::string> SymbolsToKeepGlobal;
+
+  // Map options
+  StringMap<SectionRename> SectionsToRename;
+  StringMap<StringRef> SymbolsToRename;
+
+  // Boolean options
+  bool DiscardAll = false;
+  bool ExtractDWO = false;
+  bool KeepFileSymbols = false;
+  bool LocalizeHidden = false;
+  bool OnlyKeepDebug = false;
+  bool PreserveDates = false;
+  bool StripAll = false;
+  bool StripAllGNU = false;
+  bool StripDWO = false;
+  bool StripDebug = false;
+  bool StripNonAlloc = false;
+  bool StripSections = false;
+  bool StripUnneeded = false;
+  bool Weaken = false;
+  bool DecompressDebugSections = false;
+  DebugCompressionType CompressionType = DebugCompressionType::None;
+};
+
+// Configuration for the overall invocation of this tool. When invoked as
+// objcopy, will always contain exactly one CopyConfig. When invoked as strip,
+// will contain one or more CopyConfigs.
+struct DriverConfig {
+  SmallVector<CopyConfig, 1> CopyConfigs;
+};
+
+// ParseObjcopyOptions returns the config and sets the input arguments. If a
+// help flag is set then ParseObjcopyOptions will print the help messege and
+// exit.
+DriverConfig parseObjcopyOptions(ArrayRef<const char *> ArgsArr);
+
+// ParseStripOptions returns the config and sets the input arguments. If a
+// help flag is set then ParseStripOptions will print the help messege and
+// exit.
+DriverConfig parseStripOptions(ArrayRef<const char *> ArgsArr);
+
+} // namespace objcopy
+} // namespace llvm
+
+#endif