Delay the creation of eh_frame so that the user can change the defaults.
Add support for SHT_X86_64_UNWIND.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124059 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/ELFAsmParser.cpp b/lib/MC/MCParser/ELFAsmParser.cpp
index 200aa5f..39ff906 100644
--- a/lib/MC/MCParser/ELFAsmParser.cpp
+++ b/lib/MC/MCParser/ELFAsmParser.cpp
@@ -338,6 +338,8 @@
       Type = ELF::SHT_PROGBITS;
     else if (TypeName == "note")
       Type = ELF::SHT_NOTE;
+    else if (TypeName == "unwind")
+      Type = ELF::SHT_X86_64_UNWIND;
     else
       return TokError("unknown section type");
   }