1 files changed, 0 insertions, 158 deletions
diff --git a/lib/Target/ARM64/MCTargetDesc/ARM64ELFStreamer.cpp b/lib/Target/ARM64/MCTargetDesc/ARM64ELFStreamer.cpp
deleted file mode 100644
index 97a3493..0000000
--- a/lib/Target/ARM64/MCTargetDesc/ARM64ELFStreamer.cpp
+++ /dev/null
@@ -1,158 +0,0 @@
-//===- lib/MC/ARM64ELFStreamer.cpp - ELF Object Output for ARM64 ----------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file assembles .s files and emits AArch64 ELF .o object files. Different
-// from generic ELF streamer in emitting mapping symbols ($x and $d) to delimit
-// regions of data and code.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/MC/MCELFStreamer.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/MC/MCAsmBackend.h"
-#include "llvm/MC/MCAssembler.h"
-#include "llvm/MC/MCCodeEmitter.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCELF.h"
-#include "llvm/MC/MCELFStreamer.h"
-#include "llvm/MC/MCELFSymbolFlags.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCObjectStreamer.h"
-#include "llvm/MC/MCSection.h"
-#include "llvm/MC/MCSectionELF.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCValue.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ELF.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
-
-using namespace llvm;
-
-namespace {
-
-/// Extend the generic ELFStreamer class so that it can emit mapping symbols at
-/// the appropriate points in the object files. These symbols are defined in the
-/// AArch64 ELF ABI:
-///    infocenter.arm.com/help/topic/com.arm.doc.ihi0056a/IHI0056A_aaelf64.pdf
-///
-/// In brief: $x or $d should be emitted at the start of each contiguous region
-/// of A64 code or data in a section. In practice, this emission does not rely
-/// on explicit assembler directives but on inherent properties of the
-/// directives doing the emission (e.g. ".byte" is data, "add x0, x0, x0" an
-/// instruction).
-///
-/// As a result this system is orthogonal to the DataRegion infrastructure used
-/// by MachO. Beware!
-class ARM64ELFStreamer : public MCELFStreamer {
-public:
-  ARM64ELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
-                   MCCodeEmitter *Emitter)
-      : MCELFStreamer(Context, TAB, OS, Emitter), MappingSymbolCounter(0),
-        LastEMS(EMS_None) {}
-
-  ~ARM64ELFStreamer() {}
-
-  virtual void ChangeSection(const MCSection *Section,
-                             const MCExpr *Subsection) {
-    // We have to keep track of the mapping symbol state of any sections we
-    // use. Each one should start off as EMS_None, which is provided as the
-    // default constructor by DenseMap::lookup.
-    LastMappingSymbols[getPreviousSection().first] = LastEMS;
-    LastEMS = LastMappingSymbols.lookup(Section);
-
-    MCELFStreamer::ChangeSection(Section, Subsection);
-  }
-
-  /// This function is the one used to emit instruction data into the ELF
-  /// streamer. We override it to add the appropriate mapping symbol if
-  /// necessary.
-  virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) {
-    EmitA64MappingSymbol();
-    MCELFStreamer::EmitInstruction(Inst, STI);
-  }
-
-  /// This is one of the functions used to emit data into an ELF section, so the
-  /// ARM64 streamer overrides it to add the appropriate mapping symbol ($d)
-  /// if necessary.
-  virtual void EmitBytes(StringRef Data) {
-    EmitDataMappingSymbol();
-    MCELFStreamer::EmitBytes(Data);
-  }
-
-  /// This is one of the functions used to emit data into an ELF section, so the
-  /// ARM64 streamer overrides it to add the appropriate mapping symbol ($d)
-  /// if necessary.
-  virtual void EmitValueImpl(const MCExpr *Value, unsigned Size) {
-    EmitDataMappingSymbol();
-    MCELFStreamer::EmitValueImpl(Value, Size);
-  }
-
-private:
-  enum ElfMappingSymbol {
-    EMS_None,
-    EMS_A64,
-    EMS_Data
-  };
-
-  void EmitDataMappingSymbol() {
-    if (LastEMS == EMS_Data)
-      return;
-    EmitMappingSymbol("$d");
-    LastEMS = EMS_Data;
-  }
-
-  void EmitA64MappingSymbol() {
-    if (LastEMS == EMS_A64)
-      return;
-    EmitMappingSymbol("$x");
-    LastEMS = EMS_A64;
-  }
-
-  void EmitMappingSymbol(StringRef Name) {
-    MCSymbol *Start = getContext().CreateTempSymbol();
-    EmitLabel(Start);
-
-    MCSymbol *Symbol = getContext().GetOrCreateSymbol(
-        Name + "." + Twine(MappingSymbolCounter++));
-
-    MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
-    MCELF::SetType(SD, ELF::STT_NOTYPE);
-    MCELF::SetBinding(SD, ELF::STB_LOCAL);
-    SD.setExternal(false);
-    Symbol->setSection(*getCurrentSection().first);
-
-    const MCExpr *Value = MCSymbolRefExpr::Create(Start, getContext());
-    Symbol->setVariableValue(Value);
-  }
-
-  int64_t MappingSymbolCounter;
-
-  DenseMap<const MCSection *, ElfMappingSymbol> LastMappingSymbols;
-  ElfMappingSymbol LastEMS;
-
-  /// @}
-};
-}
-
-namespace llvm {
-MCELFStreamer *createARM64ELFStreamer(MCContext &Context, MCAsmBackend &TAB,
-                                      raw_ostream &OS, MCCodeEmitter *Emitter,
-                                      bool RelaxAll, bool NoExecStack) {
-  ARM64ELFStreamer *S = new ARM64ELFStreamer(Context, TAB, OS, Emitter);
-  if (RelaxAll)
-    S->getAssembler().setRelaxAll(true);
-  if (NoExecStack)
-    S->getAssembler().setNoExecStack(true);
-  return S;
-}
-}