[yaml2obj][obj2yaml] - Support SHT_GNU_versym (.gnu.version) section.

This patch adds support for parsing dumping the .gnu.version section.
Description of the section is: https://refspecs.linuxfoundation.org/LSB_1.3.0/gLSB/gLSB/symversion.html#SYMVERTBL

Differential revision: https://reviews.llvm.org/D58280

llvm-svn: 354338

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/ObjectYAML/ELFYAML.cpp b/llvm/lib/ObjectYAML/ELFYAML.cpp
index bc07fae13d6..8460ad04cd0 100644
--- a/llvm/lib/ObjectYAML/ELFYAML.cpp
+++ b/llvm/lib/ObjectYAML/ELFYAML.cpp
@@ -872,6 +872,11 @@ static void sectionMapping(IO &IO, ELFYAML::NoBitsSection &Section) {
   IO.mapOptional("Size", Section.Size, Hex64(0));
 }
 
+static void sectionMapping(IO &IO, ELFYAML::SymverSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapRequired("Entries", Section.Entries);
+}
+
 static void sectionMapping(IO &IO, ELFYAML::VerneedSection &Section) {
   commonSectionMapping(IO, Section);
   IO.mapRequired("Info", Section.Info);
@@ -955,6 +960,11 @@ void MappingTraits<std::unique_ptr<ELFYAML::Section>>::mapping(
       Section.reset(new ELFYAML::MipsABIFlags());
     sectionMapping(IO, *cast<ELFYAML::MipsABIFlags>(Section.get()));
     break;
+  case ELF::SHT_GNU_versym:
+    if (!IO.outputting())
+      Section.reset(new ELFYAML::SymverSection());
+    sectionMapping(IO, *cast<ELFYAML::SymverSection>(Section.get()));
+    break;
   case ELF::SHT_GNU_verneed:
     if (!IO.outputting())
       Section.reset(new ELFYAML::VerneedSection());