1 files changed, 81 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/MSP430/MCTargetDesc/MSP430ELFStreamer.cpp b/contrib/llvm/lib/Target/MSP430/MCTargetDesc/MSP430ELFStreamer.cpp
new file mode 100644
index 000000000000..9449cb278024
--- /dev/null
+++ b/contrib/llvm/lib/Target/MSP430/MCTargetDesc/MSP430ELFStreamer.cpp
@@ -0,0 +1,81 @@
+//===-- MSP430ELFStreamer.cpp - MSP430 ELF Target Streamer Methods --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides MSP430 specific target streamer methods.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MSP430MCTargetDesc.h"
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCELFStreamer.h"
+#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+
+using namespace llvm;
+
+namespace llvm {
+
+class MSP430TargetELFStreamer : public MCTargetStreamer {
+public:
+  MCELFStreamer &getStreamer();
+  MSP430TargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI);
+};
+
+// This part is for ELF object output.
+MSP430TargetELFStreamer::MSP430TargetELFStreamer(MCStreamer &S,
+                                                 const MCSubtargetInfo &STI)
+    : MCTargetStreamer(S) {
+  MCAssembler &MCA = getStreamer().getAssembler();
+  unsigned EFlags = MCA.getELFHeaderEFlags();
+  MCA.setELFHeaderEFlags(EFlags);
+
+  // Emit build attributes section according to
+  // MSP430 EABI (slaa534.pdf, part 13).
+  MCSection *AttributeSection = getStreamer().getContext().getELFSection(
+      ".MSP430.attributes", ELF::SHT_MSP430_ATTRIBUTES, 0);
+  Streamer.SwitchSection(AttributeSection);
+
+  // Format version.
+  Streamer.EmitIntValue(0x41, 1);
+  // Subsection length.
+  Streamer.EmitIntValue(22, 4);
+  // Vendor name string, zero-terminated.
+  Streamer.EmitBytes("mspabi");
+  Streamer.EmitIntValue(0, 1);
+
+  // Attribute vector scope tag. 1 stands for the entire file.
+  Streamer.EmitIntValue(1, 1);
+  // Attribute vector length.
+  Streamer.EmitIntValue(11, 4);
+  // OFBA_MSPABI_Tag_ISA(4) = 1, MSP430
+  Streamer.EmitIntValue(4, 1);
+  Streamer.EmitIntValue(1, 1);
+  // OFBA_MSPABI_Tag_Code_Model(6) = 1, Small
+  Streamer.EmitIntValue(6, 1);
+  Streamer.EmitIntValue(1, 1);
+  // OFBA_MSPABI_Tag_Data_Model(8) = 1, Small
+  Streamer.EmitIntValue(8, 1);
+  Streamer.EmitIntValue(1, 1);
+}
+
+MCELFStreamer &MSP430TargetELFStreamer::getStreamer() {
+  return static_cast<MCELFStreamer &>(Streamer);
+}
+
+MCTargetStreamer *
+createMSP430ObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
+  const Triple &TT = STI.getTargetTriple();
+  if (TT.isOSBinFormatELF())
+    return new MSP430TargetELFStreamer(S, STI);
+  return nullptr;
+}
+
+} // namespace llvm