[PATCH] D55298: [llvm-readelf] Add -e/--headers support to readobj/elf

[Sid Manning via Phabricator via llvm-commits]

sidneym created this revision.
sidneym added reviewers: rupprecht, phosek, mcgrathr, jhenderson.

Several new options have been recently added to align with GNU.  This patch adds -e/--headers.


Repository:
  rL LLVM

https://reviews.llvm.org/D55298

Files:
  test/tools/llvm-readobj/justheader.test
  tools/llvm-readobj/llvm-readobj.cpp


Index: tools/llvm-readobj/llvm-readobj.cpp
===================================================================
--- tools/llvm-readobj/llvm-readobj.cpp
+++ tools/llvm-readobj/llvm-readobj.cpp
@@ -57,6 +57,14 @@
                    "--section-groups and --elf-hash-histogram."));
   cl::alias AllShort("a", cl::desc("Alias for --all"), cl::aliasopt(All));
 
+  // --headers -e
+  cl::opt<bool>
+      JustHeaders("headers",
+          cl::desc("Equivalent to setting: --file-headers, --program-headers, "
+                   "--section-headers"));
+  cl::alias JustHeadersShort("e", cl::desc("Alias for --headers"),
+     cl::aliasopt(JustHeaders));
+
   // -wide, -W
   cl::opt<bool>
       WideOutput("wide", cl::desc("Ignored for compatibility with GNU readelf"),
@@ -666,6 +674,12 @@
     opts::HashHistogram = true;
   }
 
+  if (opts::JustHeaders) {
+    opts::FileHeaders = true;
+    opts::ProgramHeaders = true;
+    opts::SectionHeaders = true;
+  }
+
   // Default to stdin if no filename is specified.
   if (opts::InputFilenames.size() == 0)
     opts::InputFilenames.push_back("-");
Index: test/tools/llvm-readobj/justheader.test
===================================================================
--- /dev/null
+++ test/tools/llvm-readobj/justheader.test
@@ -0,0 +1,11 @@
+RUN: llvm-readelf -e %p/Inputs/trivial.obj.elf-i386 \
+RUN:   | FileCheck %s
+RUN: llvm-readelf --headers %p/Inputs/trivial.obj.elf-i386 \
+RUN:   | FileCheck %s
+
+CHECK: ELF Header:
+CHECK: Section Headers:
+CHECK: Program Headers:
+CHECK-NOT: Relocation section
+CHECK-NOT: Symbol table
+


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