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