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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/MCAssembler.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 emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
void emitWinEHHandlerData(SMLoc Loc) override;
void emitWindowsUnwindTables(WinEH::FrameInfo *Frame) override;
void emitWindowsUnwindTables() override;
void emitCVFPOData(const MCSymbol *ProcSym, SMLoc Loc) override;
void finishImpl() override;
};
void X86WinCOFFStreamer::emitInstruction(const MCInst &Inst,
const MCSubtargetInfo &STI) {
X86_MC::emitInstruction(*this, Inst, STI);
}
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.
if (WinEH::FrameInfo *CurFrame = getCurrentWinFrameInfo())
EHStreamer.EmitUnwindInfo(*this, CurFrame, /* HandlerData = */ true);
}
void X86WinCOFFStreamer::emitWindowsUnwindTables(WinEH::FrameInfo *Frame) {
EHStreamer.EmitUnwindInfo(*this, Frame, /* HandlerData = */ false);
}
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();
}
} // namespace
MCStreamer *
llvm::createX86WinCOFFStreamer(MCContext &C, std::unique_ptr<MCAsmBackend> &&AB,
std::unique_ptr<MCObjectWriter> &&OW,
std::unique_ptr<MCCodeEmitter> &&CE) {
return new X86WinCOFFStreamer(C, std::move(AB), std::move(CE), std::move(OW));
}
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