lib/Target/ARM/MCTargetDesc/ARMWinCOFFStreamer.cpp

   1 //===-- ARMWinCOFFStreamer.cpp - ARM Target WinCOFF Streamer ----*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "ARMMCTargetDesc.h"
  10 #include "llvm/MC/MCAsmBackend.h"
  11 #include "llvm/MC/MCCodeEmitter.h"
  12 #include "llvm/MC/MCObjectWriter.h"
  13 #include "llvm/MC/MCWinCOFFStreamer.h"
  14
  15 using namespace llvm;
  16
  17 namespace {
  18 class ARMWinCOFFStreamer : public MCWinCOFFStreamer {
  19 public:
  20   ARMWinCOFFStreamer(MCContext &C, std::unique_ptr<MCAsmBackend> AB,
  21                      std::unique_ptr<MCCodeEmitter> CE,
  22                      std::unique_ptr<MCObjectWriter> OW)
  23       : MCWinCOFFStreamer(C, std::move(AB), std::move(CE), std::move(OW)) {}
  24
  25   void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
  26   void EmitThumbFunc(MCSymbol *Symbol) override;
  27   void FinishImpl() override;
  28 };
  29
  30 void ARMWinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
  31   switch (Flag) {
  32   default: llvm_unreachable("not implemented");
  33   case MCAF_SyntaxUnified:
  34   case MCAF_Code16:
  35     break;
  36   }
  37 }
  38
  39 void ARMWinCOFFStreamer::EmitThumbFunc(MCSymbol *Symbol) {
  40   getAssembler().setIsThumbFunc(Symbol);
  41 }
  42
  43 void ARMWinCOFFStreamer::FinishImpl() {
  44   EmitFrames(nullptr);
  45
  46   MCWinCOFFStreamer::FinishImpl();
  47 }
  48 }
  49
  50 MCStreamer *llvm::createARMWinCOFFStreamer(
  51     MCContext &Context, std::unique_ptr<MCAsmBackend> &&MAB,
  52     std::unique_ptr<MCObjectWriter> &&OW,
  53     std::unique_ptr<MCCodeEmitter> &&Emitter, bool RelaxAll,
  54     bool IncrementalLinkerCompatible) {
  55   auto *S = new ARMWinCOFFStreamer(Context, std::move(MAB), std::move(Emitter),
  56                                    std::move(OW));
  57   S->getAssembler().setIncrementalLinkerCompatible(IncrementalLinkerCompatible);
  58   return S;
  59 }
  60