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Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +00001//===-- X86WinCOFFStreamer.cpp - X86 Target WinCOFF Streamer ----*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "X86MCTargetDesc.h"
Reid Kleckner9cdd4df2017-10-11 21:24:33 +000011#include "X86TargetStreamer.h"
Lang Hames02d33052017-10-11 01:57:21 +000012#include "llvm/MC/MCAsmBackend.h"
Lang Hames2241ffa2017-10-11 23:34:47 +000013#include "llvm/MC/MCCodeEmitter.h"
Saleem Abdulrasool64a8cc72014-08-07 02:59:41 +000014#include "llvm/MC/MCWin64EH.h"
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000015#include "llvm/MC/MCWinCOFFStreamer.h"
16
17using namespace llvm;
18
19namespace {
20class X86WinCOFFStreamer : public MCWinCOFFStreamer {
Saleem Abdulrasool64a8cc72014-08-07 02:59:41 +000021 Win64EH::UnwindEmitter EHStreamer;
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000022public:
Lang Hames02d33052017-10-11 01:57:21 +000023 X86WinCOFFStreamer(MCContext &C, std::unique_ptr<MCAsmBackend> AB,
Lang Hames2241ffa2017-10-11 23:34:47 +000024 std::unique_ptr<MCCodeEmitter> CE, raw_pwrite_stream &OS)
25 : MCWinCOFFStreamer(C, std::move(AB), std::move(CE), OS) {}
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000026
Reid Klecknere52d1e62017-10-10 01:26:25 +000027 void EmitWinEHHandlerData(SMLoc Loc) override;
Peter Collingbourne0da86302016-10-10 22:49:37 +000028 void EmitWindowsUnwindTables() override;
Reid Kleckner9cdd4df2017-10-11 21:24:33 +000029 void EmitCVFPOData(const MCSymbol *ProcSym, SMLoc Loc) override;
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000030 void FinishImpl() override;
31};
32
Reid Klecknere52d1e62017-10-10 01:26:25 +000033void X86WinCOFFStreamer::EmitWinEHHandlerData(SMLoc Loc) {
34 MCStreamer::EmitWinEHHandlerData(Loc);
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000035
36 // We have to emit the unwind info now, because this directive
37 // actually switches to the .xdata section!
Saleem Abdulrasool64a8cc72014-08-07 02:59:41 +000038 EHStreamer.EmitUnwindInfo(*this, getCurrentWinFrameInfo());
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000039}
40
Saleem Abdulrasool4544c162014-08-03 18:51:26 +000041void X86WinCOFFStreamer::EmitWindowsUnwindTables() {
42 if (!getNumWinFrameInfos())
43 return;
Saleem Abdulrasool64a8cc72014-08-07 02:59:41 +000044 EHStreamer.Emit(*this);
Saleem Abdulrasool4544c162014-08-03 18:51:26 +000045}
46
Reid Kleckner9cdd4df2017-10-11 21:24:33 +000047void X86WinCOFFStreamer::EmitCVFPOData(const MCSymbol *ProcSym, SMLoc Loc) {
48 X86TargetStreamer *XTS =
49 static_cast<X86TargetStreamer *>(getTargetStreamer());
50 XTS->emitFPOData(ProcSym, Loc);
51}
52
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000053void X86WinCOFFStreamer::FinishImpl() {
Rafael Espindola7f4ccce2014-05-12 13:30:10 +000054 EmitFrames(nullptr);
Saleem Abdulrasool3f3cefd2014-07-13 19:03:36 +000055 EmitWindowsUnwindTables();
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000056
57 MCWinCOFFStreamer::FinishImpl();
58}
Alexander Kornienkof00654e2015-06-23 09:49:53 +000059}
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000060
Lang Hames02d33052017-10-11 01:57:21 +000061MCStreamer *llvm::createX86WinCOFFStreamer(MCContext &C,
62 std::unique_ptr<MCAsmBackend> &&AB,
Rafael Espindola5560a4c2015-04-14 22:14:34 +000063 raw_pwrite_stream &OS,
Lang Hames2241ffa2017-10-11 23:34:47 +000064 std::unique_ptr<MCCodeEmitter> &&CE,
65 bool RelaxAll,
David Majnemer03e2cc32015-12-21 22:09:27 +000066 bool IncrementalLinkerCompatible) {
Lang Hames2241ffa2017-10-11 23:34:47 +000067 X86WinCOFFStreamer *S =
68 new X86WinCOFFStreamer(C, std::move(AB), std::move(CE), OS);
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000069 S->getAssembler().setRelaxAll(RelaxAll);
David Majnemer03e2cc32015-12-21 22:09:27 +000070 S->getAssembler().setIncrementalLinkerCompatible(IncrementalLinkerCompatible);
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000071 return S;
72}
Saleem Abdulrasoola8b1f722014-04-27 03:48:12 +000073