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https://github.com/c64scene-ar/llvm-6502.git
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7cc1de1090
This changes Win64EHEmitter into a utility WinEH UnwindEmitter that can be shared across multiple architectures and a target specific bit which is overridden (Win64::UnwindEmitter). This enables sharing the section selection code across X86 and the intended use in ARM for emitting unwind information for Windows on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215050 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
//===-- X86WinCOFFStreamer.cpp - X86 Target WinCOFF Streamer ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "X86MCTargetDesc.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, MCAsmBackend &AB, MCCodeEmitter *CE,
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raw_ostream &OS)
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: MCWinCOFFStreamer(C, AB, *CE, OS) { }
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void EmitWinEHHandlerData() override;
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void EmitWindowsUnwindTables() override;
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void FinishImpl() override;
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};
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void X86WinCOFFStreamer::EmitWinEHHandlerData() {
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MCStreamer::EmitWinEHHandlerData();
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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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EHStreamer.EmitUnwindInfo(*this, getCurrentWinFrameInfo());
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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::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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}
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namespace llvm {
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MCStreamer *createX86WinCOFFStreamer(MCContext &C, MCAsmBackend &AB,
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MCCodeEmitter *CE, raw_ostream &OS,
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bool RelaxAll) {
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X86WinCOFFStreamer *S = new X86WinCOFFStreamer(C, AB, CE, OS);
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S->getAssembler().setRelaxAll(RelaxAll);
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return S;
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}
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}
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