1 //= AArch64WinCOFFObjectWriter.cpp - AArch64 Windows COFF Object Writer 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 "MCTargetDesc/AArch64FixupKinds.h"
11 #include "llvm/ADT/Twine.h"
12 #include "llvm/BinaryFormat/COFF.h"
13 #include "llvm/MC/MCAsmBackend.h"
14 #include "llvm/MC/MCExpr.h"
15 #include "llvm/MC/MCFixup.h"
16 #include "llvm/MC/MCFixupKindInfo.h"
17 #include "llvm/MC/MCValue.h"
18 #include "llvm/MC/MCWinCOFFObjectWriter.h"
19 #include "llvm/Support/ErrorHandling.h"
20 #include "llvm/Support/raw_ostream.h"
21 #include <cassert>
22 
23 using namespace llvm;
24 
25 namespace {
26 
27 class AArch64WinCOFFObjectWriter : public MCWinCOFFObjectTargetWriter {
28 public:
29   AArch64WinCOFFObjectWriter()
30     : MCWinCOFFObjectTargetWriter(COFF::IMAGE_FILE_MACHINE_ARM64) {
31   }
32 
33   ~AArch64WinCOFFObjectWriter() override = default;
34 
35   unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
36                         const MCFixup &Fixup, bool IsCrossSection,
37                         const MCAsmBackend &MAB) const override;
38 
39    bool recordRelocation(const MCFixup &) const override;
40 };
41 
42 } // end anonymous namespace
43 
44 unsigned
45 AArch64WinCOFFObjectWriter::getRelocType(MCContext &Ctx,
46                                          const MCValue &Target,
47                                          const MCFixup &Fixup,
48                                          bool IsCrossSection,
49                                          const MCAsmBackend &MAB) const {
50   const MCFixupKindInfo &Info = MAB.getFixupKindInfo(Fixup.getKind());
51   report_fatal_error(Twine("unsupported relocation type: ") + Info.Name);
52 }
53 
54 bool AArch64WinCOFFObjectWriter::recordRelocation(const MCFixup &Fixup) const {
55   return true;
56 }
57 
58 namespace llvm {
59 
60 MCObjectWriter *createAArch64WinCOFFObjectWriter(raw_pwrite_stream &OS) {
61   MCWinCOFFObjectTargetWriter *MOTW = new AArch64WinCOFFObjectWriter();
62   return createWinCOFFObjectWriter(MOTW, OS);
63 }
64 
65 } // end namespace llvm
66