1. ARM/MC/ELF: A few more ELF relocs for .o

2. Fixed EmitLocalCommonSymbol for ELF (Yes, they exist. :)
   Test added.

llvm-svn: 121951

1 files changed, 12 insertions, 3 deletions

diff --git a/llvm/lib/MC/MCELFStreamer.cpp b/llvm/lib/MC/MCELFStreamer.cpp
index 6900b247ce8..4636e2a1f0e 100644
--- a/llvm/lib/MC/MCELFStreamer.cpp
+++ b/llvm/lib/MC/MCELFStreamer.cpp
@@ -113,9 +113,8 @@ public:
      SD.setSize(Value);
   }
 
-  virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
-    assert(0 && "ELF doesn't support this directive");
-  }
+  virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size);
+
   virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
                             unsigned Size = 0, unsigned ByteAlignment = 0) {
     assert(0 && "ELF doesn't support this directive");
@@ -362,6 +361,16 @@ void MCELFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
   SD.setSize(MCConstantExpr::Create(Size, getContext()));
 }
 
+void MCELFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
+  // FIXME: Should this be caught and done earlier?
+  MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
+  SetBinding(SD, ELF::STB_LOCAL);
+  SD.setExternal(false);
+  BindingExplicitlySet.insert(Symbol);
+  // FIXME: ByteAlignment is not needed here, but is required.
+  EmitCommonSymbol(Symbol, Size, 1);
+}
+
 void MCELFStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) {
   // TODO: This is exactly the same as WinCOFFStreamer. Consider merging into
   // MCObjectStreamer.