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//===-- X86WinCOFFStreamer.cpp - X86 Target WinCOFF Streamer ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "X86MCTargetDesc.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, MCAsmBackend &AB, MCCodeEmitter *CE,
raw_ostream &OS)
: MCWinCOFFStreamer(C, AB, *CE, OS) { }
void EmitWinEHHandlerData() override;
void EmitWindowsUnwindTables() override;
void FinishImpl() override;
};
void X86WinCOFFStreamer::EmitWinEHHandlerData() {
MCStreamer::EmitWinEHHandlerData();
// 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::FinishImpl() {
EmitFrames(nullptr);
EmitWindowsUnwindTables();
MCWinCOFFStreamer::FinishImpl();
}
}
MCStreamer *llvm::createX86WinCOFFStreamer(MCContext &C, MCAsmBackend &AB,
raw_ostream &OS, MCCodeEmitter *CE,
bool RelaxAll) {
X86WinCOFFStreamer *S = new X86WinCOFFStreamer(C, AB, CE, OS);
S->getAssembler().setRelaxAll(RelaxAll);
return S;
}
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