1 files changed, 74 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.h b/contrib/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.h
new file mode 100644
index 0000000..136146b
--- /dev/null
+++ b/contrib/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.h
@@ -0,0 +1,74 @@
+//===-------- MipsELFStreamer.h - ELF Object Output -----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a custom MCELFStreamer which allows us to insert some hooks before
+// emitting data into an actual object file.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSELFSTREAMER_H
+#define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSELFSTREAMER_H
+
+#include "MipsOptionRecord.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/MC/MCELFStreamer.h"
+#include <memory>
+
+namespace llvm {
+class MCAsmBackend;
+class MCCodeEmitter;
+class MCContext;
+class MCSubtargetInfo;
+
+class MipsELFStreamer : public MCELFStreamer {
+  SmallVector<std::unique_ptr<MipsOptionRecord>, 8> MipsOptionRecords;
+  MipsRegInfoRecord *RegInfoRecord;
+  SmallVector<MCSymbol*, 4> Labels;
+
+
+public:
+  MipsELFStreamer(MCContext &Context, MCAsmBackend &MAB, raw_ostream &OS,
+                  MCCodeEmitter *Emitter, const MCSubtargetInfo &STI)
+      : MCELFStreamer(Context, MAB, OS, Emitter) {
+
+    RegInfoRecord = new MipsRegInfoRecord(this, Context, STI);
+    MipsOptionRecords.push_back(
+        std::unique_ptr<MipsRegInfoRecord>(RegInfoRecord));
+  }
+
+  /// Overriding this function allows us to add arbitrary behaviour before the
+  /// \p Inst is actually emitted. For example, we can inspect the operands and
+  /// gather sufficient information that allows us to reason about the register
+  /// usage for the translation unit.
+  void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
+
+  /// Overriding this function allows us to record all labels that should be
+  /// marked as microMIPS. Based on this data marking is done in
+  /// EmitInstruction.
+  void EmitLabel(MCSymbol *Symbol) override;
+
+  /// Overriding this function allows us to dismiss all labels that are
+  /// candidates for marking as microMIPS when .section directive is processed.
+  void SwitchSection(const MCSection *Section,
+                     const MCExpr *Subsection = nullptr) override;
+
+  /// Overriding this function allows us to dismiss all labels that are
+  /// candidates for marking as microMIPS when .word directive is emitted.
+  void EmitValueImpl(const MCExpr *Value, unsigned Size,
+                     const SMLoc &Loc) override;
+
+  /// Emits all the option records stored up until the point it's called.
+  void EmitMipsOptionRecords();
+};
+
+MCELFStreamer *createMipsELFStreamer(MCContext &Context, MCAsmBackend &MAB,
+                                     raw_ostream &OS, MCCodeEmitter *Emitter,
+                                     const MCSubtargetInfo &STI, bool RelaxAll);
+} // namespace llvm.
+#endif