[llvm-readelf] Make llvm-readelf more compatible with GNU readelf.

Summary:
This change adds a bunch of options that GNU readelf supports. There is one breaking change when invoked as `llvm-readobj`, and three breaking changes when invoked as `llvm-readelf`:
 - Add --all (implies --file-header, --program-headers, etc.)
 - [Breaking] -a is --all instead of --arm-attributes
 - Add --file-header as an alias for --file-headers
 - Replace --sections with --sections-headers, keeping --sections as an alias for it
 - Add --relocs as an alias for --relocations
 - Add --dynamic as an alias for --dynamic-table
 - Add --segments as an alias for --program-headers
 - Add --section-groups as an alias for --elf-section-groups
 - Add --dyn-syms as an alias for --dyn-symbols
 - Add --syms as an alias for --symbols
 - Add --histogram as an alias for --elf-hash-histogram
 - [Breaking] When invoked as `llvm-readelf`, -s is --symbols instead of --sections
 - [Breaking] When invoked as `llvm-readelf`, -t is no longer an alias for --symbols

Reviewers: MaskRay, phosek, mcgrathr, jhenderson

Reviewed By: MaskRay, jhenderson

Subscribers: sbc100, aheejin, edd, jhenderson, silvas, echristo, compnerd, kristina, javed.absar, kristof.beyls, llvm-commits, Bigcheese

Differential Revision: https://reviews.llvm.org/D54124

llvm-svn: 346685

1 files changed, 0 insertions, 9 deletions

diff --git a/llvm/tools/llvm-readobj/llvm-readobj.h b/llvm/tools/llvm-readobj/llvm-readobj.h
index 73eee76..92ed098d 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.h
+++ b/llvm/tools/llvm-readobj/llvm-readobj.h
@@ -49,22 +49,13 @@ namespace llvm {
 } // namespace llvm
 
 namespace opts {
-  extern llvm::cl::list<std::string> InputFilenames;
-  extern llvm::cl::opt<bool> FileHeaders;
-  extern llvm::cl::opt<bool> Sections;
   extern llvm::cl::opt<bool> SectionRelocations;
   extern llvm::cl::opt<bool> SectionSymbols;
   extern llvm::cl::opt<bool> SectionData;
-  extern llvm::cl::opt<bool> Relocations;
-  extern llvm::cl::opt<bool> Symbols;
   extern llvm::cl::opt<bool> DynamicSymbols;
-  extern llvm::cl::opt<bool> UnwindInfo;
   extern llvm::cl::opt<bool> ExpandRelocs;
   extern llvm::cl::opt<bool> RawRelr;
-  extern llvm::cl::opt<bool> CodeView;
   extern llvm::cl::opt<bool> CodeViewSubsectionBytes;
-  extern llvm::cl::opt<bool> ARMAttributes;
-  extern llvm::cl::opt<bool> MipsPLTGOT;
   enum OutputStyleTy { LLVM, GNU };
   extern llvm::cl::opt<OutputStyleTy> Output;
 } // namespace opts