MC: Add TargetAsmBackend::createObjectWriter.

 - MCAssembler is now object-file independent, although we will surely need more work to fully support ELF/COFF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98955 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetAsmBackend.h b/include/llvm/Target/TargetAsmBackend.h
index 97b1d60..bb501cc 100644
--- a/include/llvm/Target/TargetAsmBackend.h
+++ b/include/llvm/Target/TargetAsmBackend.h
@@ -15,8 +15,10 @@
 namespace llvm {
 class MCAsmFixup;
 class MCDataFragment;
+class MCObjectWriter;
 class MCSection;
 class Target;
+class raw_ostream;
 
 /// TargetAsmBackend - Generic interface to target specific assembler backends.
 class TargetAsmBackend {
@@ -37,6 +39,10 @@ public:
 
   const Target &getTarget() const { return TheTarget; }
 
+  /// createObjectWriter - Create a new MCObjectWriter instance for use by the
+  /// assembler backend to emit the final object file.
+  virtual MCObjectWriter *createObjectWriter(raw_ostream &OS) const = 0;
+
   /// hasAbsolutizedSet - Check whether this target "absolutizes"
   /// assignments. That is, given code like:
   ///   a: