[SPARC] Repair GOT references to internal symbols.

They had been getting emitted as a section + offset reference, which
is bogus since the value needs to be the offset within the GOT, not
the actual address of the symbol's object.

Differential Revision: http://reviews.llvm.org/D10441

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240020 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Sparc/MCTargetDesc/SparcELFObjectWriter.cpp

@@ -31,6 +31,10 @@ namespace {
   protected:
     unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
                           bool IsPCRel) const override;
+
+    bool needsRelocateWithSymbol(const MCSymbol &Sym,
+                                 unsigned Type) const override;
+
   };
 }
 
@@ -105,6 +109,27 @@ unsigned SparcELFObjectWriter::GetRelocType(const MCValue &Target,
   return ELF::R_SPARC_NONE;
 }
 
+bool SparcELFObjectWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
+                                                 unsigned Type) const {
+  switch (Type) {
+    default:
+      return false;
+
+    // All relocations that use a GOT need a symbol, not an offset, as
+    // the offset of the symbol within the section is irrelevant to
+    // where the GOT entry is. Don't need to list all the TLS entries,
+    // as they're all marked as requiring a symbol anyways.
+    case ELF::R_SPARC_GOT10:
+    case ELF::R_SPARC_GOT13:
+    case ELF::R_SPARC_GOT22:
+    case ELF::R_SPARC_GOTDATA_HIX22:
+    case ELF::R_SPARC_GOTDATA_LOX10:
+    case ELF::R_SPARC_GOTDATA_OP_HIX22:
+    case ELF::R_SPARC_GOTDATA_OP_LOX10:
+      return true;
+  }
+}
+
 MCObjectWriter *llvm::createSparcELFObjectWriter(raw_pwrite_stream &OS,
                                                  bool Is64Bit,
                                                  bool IsLittleEndian,