llvm-6502/lib/Target/X86/MCTargetDesc/X86WinCOFFStreamer.cpp
Saleem Abdulrasool 6c76c959e4 MC: create X86WinCOFFStreamer for target specific behaviour
This introduces a target specific streamer, X86WinCOFFStreamer, which handles
the target specific behaviour (e.g. WinEH).  This is mostly to ensure that
differences between ARM and X86 remain disjoint and do not accidentally cross
boundaries.  This is the final staging change for enabling object emission for
Windows on ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207344 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-27 03:48:12 +00:00

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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/MCWinCOFFStreamer.h"
using namespace llvm;
namespace {
class X86WinCOFFStreamer : public MCWinCOFFStreamer {
public:
X86WinCOFFStreamer(MCContext &C, MCAsmBackend &AB, MCCodeEmitter *CE,
raw_ostream &OS)
: MCWinCOFFStreamer(C, AB, *CE, OS) { }
void EmitWin64EHHandlerData() override;
void FinishImpl() override;
};
void X86WinCOFFStreamer::EmitWin64EHHandlerData() {
MCStreamer::EmitWin64EHHandlerData();
// We have to emit the unwind info now, because this directive
// actually switches to the .xdata section!
MCWin64EHUnwindEmitter::EmitUnwindInfo(*this, getCurrentW64UnwindInfo());
}
void X86WinCOFFStreamer::FinishImpl() {
EmitFrames(nullptr, true);
EmitW64Tables();
MCWinCOFFStreamer::FinishImpl();
}
}
namespace llvm {
MCStreamer *createX86WinCOFFStreamer(MCContext &C, MCAsmBackend &AB,
MCCodeEmitter *CE, raw_ostream &OS,
bool RelaxAll) {
X86WinCOFFStreamer *S = new X86WinCOFFStreamer(C, AB, CE, OS);
S->getAssembler().setRelaxAll(RelaxAll);
return S;
}
}