1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
//===-- 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();
}
}
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;
}
}
|
