1 //===-- LanaiELFObjectWriter.cpp - Lanai ELF Writer -----------------------===//
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/LanaiBaseInfo.h"
11 #include "MCTargetDesc/LanaiFixupKinds.h"
12 #include "llvm/BinaryFormat/ELF.h"
13 #include "llvm/MC/MCELFObjectWriter.h"
14 #include "llvm/MC/MCObjectWriter.h"
15 #include "llvm/Support/ErrorHandling.h"
21 class LanaiELFObjectWriter : public MCELFObjectTargetWriter {
23 explicit LanaiELFObjectWriter(uint8_t OSABI);
25 ~LanaiELFObjectWriter() override = default;
28 unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
29 const MCFixup &Fixup, bool IsPCRel) const override;
30 bool needsRelocateWithSymbol(const MCSymbol &SD,
31 unsigned Type) const override;
34 } // end anonymous namespace
36 LanaiELFObjectWriter::LanaiELFObjectWriter(uint8_t OSABI)
37 : MCELFObjectTargetWriter(/*Is64Bit_=*/false, OSABI, ELF::EM_LANAI,
38 /*HasRelocationAddend=*/true) {}
40 unsigned LanaiELFObjectWriter::getRelocType(MCContext & /*Ctx*/,
41 const MCValue & /*Target*/,
43 bool /*IsPCRel*/) const {
45 unsigned Kind = static_cast<unsigned>(Fixup.getKind());
47 case Lanai::FIXUP_LANAI_21:
48 Type = ELF::R_LANAI_21;
50 case Lanai::FIXUP_LANAI_21_F:
51 Type = ELF::R_LANAI_21_F;
53 case Lanai::FIXUP_LANAI_25:
54 Type = ELF::R_LANAI_25;
56 case Lanai::FIXUP_LANAI_32:
58 Type = ELF::R_LANAI_32;
60 case Lanai::FIXUP_LANAI_HI16:
61 Type = ELF::R_LANAI_HI16;
63 case Lanai::FIXUP_LANAI_LO16:
64 Type = ELF::R_LANAI_LO16;
66 case Lanai::FIXUP_LANAI_NONE:
67 Type = ELF::R_LANAI_NONE;
71 llvm_unreachable("Invalid fixup kind!");
76 bool LanaiELFObjectWriter::needsRelocateWithSymbol(const MCSymbol & /*SD*/,
77 unsigned Type) const {
80 case ELF::R_LANAI_21_F:
83 case ELF::R_LANAI_HI16:
90 std::unique_ptr<MCObjectTargetWriter>
91 llvm::createLanaiELFObjectWriter(uint8_t OSABI) {
92 return llvm::make_unique<LanaiELFObjectWriter>(OSABI);