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81 lines
2.8 KiB
81 lines
2.8 KiB
//===-- X86WinCOFFStreamer.cpp - X86 Target WinCOFF Streamer ----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "X86MCTargetDesc.h"
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#include "X86TargetStreamer.h"
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#include "llvm/MC/MCAsmBackend.h"
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#include "llvm/MC/MCCodeEmitter.h"
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#include "llvm/MC/MCObjectWriter.h"
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#include "llvm/MC/MCWin64EH.h"
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#include "llvm/MC/MCWinCOFFStreamer.h"
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using namespace llvm;
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namespace {
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class X86WinCOFFStreamer : public MCWinCOFFStreamer {
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Win64EH::UnwindEmitter EHStreamer;
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public:
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X86WinCOFFStreamer(MCContext &C, std::unique_ptr<MCAsmBackend> AB,
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std::unique_ptr<MCCodeEmitter> CE,
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std::unique_ptr<MCObjectWriter> OW)
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: MCWinCOFFStreamer(C, std::move(AB), std::move(CE), std::move(OW)) {}
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void EmitWinEHHandlerData(SMLoc Loc) override;
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void EmitWindowsUnwindTables(WinEH::FrameInfo *Frame) override;
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void EmitWindowsUnwindTables() override;
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void EmitCVFPOData(const MCSymbol *ProcSym, SMLoc Loc) override;
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void finishImpl() override;
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};
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void X86WinCOFFStreamer::EmitWinEHHandlerData(SMLoc Loc) {
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MCStreamer::EmitWinEHHandlerData(Loc);
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// We have to emit the unwind info now, because this directive
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// actually switches to the .xdata section.
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if (WinEH::FrameInfo *CurFrame = getCurrentWinFrameInfo())
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EHStreamer.EmitUnwindInfo(*this, CurFrame, /* HandlerData = */ true);
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}
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void X86WinCOFFStreamer::EmitWindowsUnwindTables(WinEH::FrameInfo *Frame) {
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EHStreamer.EmitUnwindInfo(*this, Frame, /* HandlerData = */ false);
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}
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void X86WinCOFFStreamer::EmitWindowsUnwindTables() {
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if (!getNumWinFrameInfos())
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return;
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EHStreamer.Emit(*this);
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}
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void X86WinCOFFStreamer::EmitCVFPOData(const MCSymbol *ProcSym, SMLoc Loc) {
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X86TargetStreamer *XTS =
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static_cast<X86TargetStreamer *>(getTargetStreamer());
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XTS->emitFPOData(ProcSym, Loc);
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}
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void X86WinCOFFStreamer::finishImpl() {
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emitFrames(nullptr);
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EmitWindowsUnwindTables();
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MCWinCOFFStreamer::finishImpl();
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}
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} // namespace
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MCStreamer *llvm::createX86WinCOFFStreamer(MCContext &C,
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std::unique_ptr<MCAsmBackend> &&AB,
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std::unique_ptr<MCObjectWriter> &&OW,
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std::unique_ptr<MCCodeEmitter> &&CE,
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bool RelaxAll,
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bool IncrementalLinkerCompatible) {
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X86WinCOFFStreamer *S =
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new X86WinCOFFStreamer(C, std::move(AB), std::move(CE), std::move(OW));
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S->getAssembler().setRelaxAll(RelaxAll);
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S->getAssembler().setIncrementalLinkerCompatible(IncrementalLinkerCompatible);
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return S;
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}
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