1 //= AArch64WinCOFFObjectWriter.cpp - AArch64 Windows COFF Object Writer C++ =//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===---------------------------------------------------------------------===//
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/MCObjectWriter.h"
18 #include "llvm/MC/MCValue.h"
19 #include "llvm/MC/MCWinCOFFObjectWriter.h"
20 #include "llvm/Support/ErrorHandling.h"
21 #include "llvm/Support/raw_ostream.h"
28 class AArch64WinCOFFObjectWriter : public MCWinCOFFObjectTargetWriter {
30 AArch64WinCOFFObjectWriter()
31 : MCWinCOFFObjectTargetWriter(COFF::IMAGE_FILE_MACHINE_ARM64) {}
33 ~AArch64WinCOFFObjectWriter() override = default;
35 unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
36 const MCFixup &Fixup, bool IsCrossSection,
37 const MCAsmBackend &MAB) const override;
39 bool recordRelocation(const MCFixup &) const override;
42 } // end anonymous namespace
44 unsigned AArch64WinCOFFObjectWriter::getRelocType(
45 MCContext &Ctx, const MCValue &Target, const MCFixup &Fixup,
46 bool IsCrossSection, const MCAsmBackend &MAB) const {
47 auto Modifier = Target.isAbsolute() ? MCSymbolRefExpr::VK_None
48 : Target.getSymA()->getKind();
50 switch (static_cast<unsigned>(Fixup.getKind())) {
52 const MCFixupKindInfo &Info = MAB.getFixupKindInfo(Fixup.getKind());
53 report_fatal_error(Twine("unsupported relocation type: ") + Info.Name);
59 return COFF::IMAGE_REL_ARM64_ADDR32;
60 case MCSymbolRefExpr::VK_COFF_IMGREL32:
61 return COFF::IMAGE_REL_ARM64_ADDR32NB;
62 case MCSymbolRefExpr::VK_SECREL:
63 return COFF::IMAGE_REL_ARM64_SECREL;
67 return COFF::IMAGE_REL_ARM64_ADDR64;
70 return COFF::IMAGE_REL_ARM64_SECTION;
73 return COFF::IMAGE_REL_ARM64_SECREL;
75 case AArch64::fixup_aarch64_add_imm12:
76 return COFF::IMAGE_REL_ARM64_PAGEOFFSET_12A;
78 case AArch64::fixup_aarch64_ldst_imm12_scale1:
79 case AArch64::fixup_aarch64_ldst_imm12_scale2:
80 case AArch64::fixup_aarch64_ldst_imm12_scale4:
81 case AArch64::fixup_aarch64_ldst_imm12_scale8:
82 case AArch64::fixup_aarch64_ldst_imm12_scale16:
83 return COFF::IMAGE_REL_ARM64_PAGEOFFSET_12L;
85 case AArch64::fixup_aarch64_pcrel_adrp_imm21:
86 return COFF::IMAGE_REL_ARM64_PAGEBASE_REL21;
88 case AArch64::fixup_aarch64_pcrel_branch26:
89 case AArch64::fixup_aarch64_pcrel_call26:
90 return COFF::IMAGE_REL_ARM64_BRANCH26;
94 bool AArch64WinCOFFObjectWriter::recordRelocation(const MCFixup &Fixup) const {
100 std::unique_ptr<MCObjectWriter>
101 createAArch64WinCOFFObjectWriter(raw_pwrite_stream &OS) {
102 auto MOTW = llvm::make_unique<AArch64WinCOFFObjectWriter>();
103 return createWinCOFFObjectWriter(std::move(MOTW), OS);
106 } // end namespace llvm