[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, 3 insertions, 3 deletions

diff --git a/llvm/tools/llvm-readobj/COFFDumper.cpp b/llvm/tools/llvm-readobj/COFFDumper.cpp
index 7f590713993..36654919201 100644
--- a/llvm/tools/llvm-readobj/COFFDumper.cpp
+++ b/llvm/tools/llvm-readobj/COFFDumper.cpp
@@ -79,7 +79,7 @@ public:
       : ObjDumper(Writer), Obj(Obj), Writer(Writer), Types(100) {}
 
   void printFileHeaders() override;
-  void printSections() override;
+  void printSectionHeaders() override;
   void printRelocations() override;
   void printSymbols() override;
   void printDynamicSymbols() override;
@@ -959,7 +959,7 @@ void COFFDumper::printCodeViewSymbolSection(StringRef SectionName,
   StringMap<StringRef> FunctionLineTables;
 
   ListScope D(W, "CodeViewDebugInfo");
-  // Print the section to allow correlation with printSections.
+  // Print the section to allow correlation with printSectionHeaders.
   W.printNumber("Section", SectionName, Obj->getSectionID(Section));
 
   uint32_t Magic;
@@ -1279,7 +1279,7 @@ void COFFDumper::printCodeViewTypeSection(StringRef SectionName,
   W.flush();
 }
 
-void COFFDumper::printSections() {
+void COFFDumper::printSectionHeaders() {
   ListScope SectionsD(W, "Sections");
   int SectionNumber = 0;
   for (const SectionRef &Sec : Obj->sections()) {