| //===-- LanaiELFObjectWriter.cpp - Lanai ELF Writer -----------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "MCTargetDesc/LanaiBaseInfo.h" |
| #include "MCTargetDesc/LanaiFixupKinds.h" |
| #include "llvm/BinaryFormat/ELF.h" |
| #include "llvm/MC/MCELFObjectWriter.h" |
| #include "llvm/MC/MCObjectWriter.h" |
| #include "llvm/Support/ErrorHandling.h" |
| |
| using namespace llvm; |
| |
| namespace { |
| |
| class LanaiELFObjectWriter : public MCELFObjectTargetWriter { |
| public: |
| explicit LanaiELFObjectWriter(uint8_t OSABI); |
| |
| ~LanaiELFObjectWriter() override = default; |
| |
| protected: |
| unsigned getRelocType(MCContext &Ctx, const MCValue &Target, |
| const MCFixup &Fixup, bool IsPCRel) const override; |
| bool needsRelocateWithSymbol(const MCSymbol &SD, |
| unsigned Type) const override; |
| }; |
| |
| } // end anonymous namespace |
| |
| LanaiELFObjectWriter::LanaiELFObjectWriter(uint8_t OSABI) |
| : MCELFObjectTargetWriter(/*Is64Bit_=*/false, OSABI, ELF::EM_LANAI, |
| /*HasRelocationAddend_=*/true) {} |
| |
| unsigned LanaiELFObjectWriter::getRelocType(MCContext & /*Ctx*/, |
| const MCValue & /*Target*/, |
| const MCFixup &Fixup, |
| bool /*IsPCRel*/) const { |
| unsigned Type; |
| unsigned Kind = static_cast<unsigned>(Fixup.getKind()); |
| switch (Kind) { |
| case Lanai::FIXUP_LANAI_21: |
| Type = ELF::R_LANAI_21; |
| break; |
| case Lanai::FIXUP_LANAI_21_F: |
| Type = ELF::R_LANAI_21_F; |
| break; |
| case Lanai::FIXUP_LANAI_25: |
| Type = ELF::R_LANAI_25; |
| break; |
| case Lanai::FIXUP_LANAI_32: |
| case FK_Data_4: |
| Type = ELF::R_LANAI_32; |
| break; |
| case Lanai::FIXUP_LANAI_HI16: |
| Type = ELF::R_LANAI_HI16; |
| break; |
| case Lanai::FIXUP_LANAI_LO16: |
| Type = ELF::R_LANAI_LO16; |
| break; |
| case Lanai::FIXUP_LANAI_NONE: |
| Type = ELF::R_LANAI_NONE; |
| break; |
| |
| default: |
| llvm_unreachable("Invalid fixup kind!"); |
| } |
| return Type; |
| } |
| |
| bool LanaiELFObjectWriter::needsRelocateWithSymbol(const MCSymbol & /*SD*/, |
| unsigned Type) const { |
| switch (Type) { |
| case ELF::R_LANAI_21: |
| case ELF::R_LANAI_21_F: |
| case ELF::R_LANAI_25: |
| case ELF::R_LANAI_32: |
| case ELF::R_LANAI_HI16: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| std::unique_ptr<MCObjectTargetWriter> |
| llvm::createLanaiELFObjectWriter(uint8_t OSABI) { |
| return std::make_unique<LanaiELFObjectWriter>(OSABI); |
| } |