10b57cec5SDimitry Andric //===-- LanaiELFObjectWriter.cpp - Lanai ELF Writer -----------------------===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric 90b57cec5SDimitry Andric #include "MCTargetDesc/LanaiBaseInfo.h" 100b57cec5SDimitry Andric #include "MCTargetDesc/LanaiFixupKinds.h" 110b57cec5SDimitry Andric #include "llvm/BinaryFormat/ELF.h" 120b57cec5SDimitry Andric #include "llvm/MC/MCELFObjectWriter.h" 130b57cec5SDimitry Andric #include "llvm/MC/MCObjectWriter.h" 140b57cec5SDimitry Andric #include "llvm/Support/ErrorHandling.h" 150b57cec5SDimitry Andric 160b57cec5SDimitry Andric using namespace llvm; 170b57cec5SDimitry Andric 180b57cec5SDimitry Andric namespace { 190b57cec5SDimitry Andric 200b57cec5SDimitry Andric class LanaiELFObjectWriter : public MCELFObjectTargetWriter { 210b57cec5SDimitry Andric public: 220b57cec5SDimitry Andric explicit LanaiELFObjectWriter(uint8_t OSABI); 230b57cec5SDimitry Andric 240b57cec5SDimitry Andric ~LanaiELFObjectWriter() override = default; 250b57cec5SDimitry Andric 260b57cec5SDimitry Andric protected: 270b57cec5SDimitry Andric unsigned getRelocType(MCContext &Ctx, const MCValue &Target, 280b57cec5SDimitry Andric const MCFixup &Fixup, bool IsPCRel) const override; 29*5f757f3fSDimitry Andric bool needsRelocateWithSymbol(const MCValue &Val, const MCSymbol &Sym, 300b57cec5SDimitry Andric unsigned Type) const override; 310b57cec5SDimitry Andric }; 320b57cec5SDimitry Andric 330b57cec5SDimitry Andric } // end anonymous namespace 340b57cec5SDimitry Andric 350b57cec5SDimitry Andric LanaiELFObjectWriter::LanaiELFObjectWriter(uint8_t OSABI) 360b57cec5SDimitry Andric : MCELFObjectTargetWriter(/*Is64Bit_=*/false, OSABI, ELF::EM_LANAI, 370b57cec5SDimitry Andric /*HasRelocationAddend_=*/true) {} 380b57cec5SDimitry Andric 390b57cec5SDimitry Andric unsigned LanaiELFObjectWriter::getRelocType(MCContext & /*Ctx*/, 400b57cec5SDimitry Andric const MCValue & /*Target*/, 410b57cec5SDimitry Andric const MCFixup &Fixup, 420b57cec5SDimitry Andric bool /*IsPCRel*/) const { 430b57cec5SDimitry Andric unsigned Type; 440b57cec5SDimitry Andric unsigned Kind = static_cast<unsigned>(Fixup.getKind()); 450b57cec5SDimitry Andric switch (Kind) { 460b57cec5SDimitry Andric case Lanai::FIXUP_LANAI_21: 470b57cec5SDimitry Andric Type = ELF::R_LANAI_21; 480b57cec5SDimitry Andric break; 490b57cec5SDimitry Andric case Lanai::FIXUP_LANAI_21_F: 500b57cec5SDimitry Andric Type = ELF::R_LANAI_21_F; 510b57cec5SDimitry Andric break; 520b57cec5SDimitry Andric case Lanai::FIXUP_LANAI_25: 530b57cec5SDimitry Andric Type = ELF::R_LANAI_25; 540b57cec5SDimitry Andric break; 550b57cec5SDimitry Andric case Lanai::FIXUP_LANAI_32: 560b57cec5SDimitry Andric case FK_Data_4: 570b57cec5SDimitry Andric Type = ELF::R_LANAI_32; 580b57cec5SDimitry Andric break; 590b57cec5SDimitry Andric case Lanai::FIXUP_LANAI_HI16: 600b57cec5SDimitry Andric Type = ELF::R_LANAI_HI16; 610b57cec5SDimitry Andric break; 620b57cec5SDimitry Andric case Lanai::FIXUP_LANAI_LO16: 630b57cec5SDimitry Andric Type = ELF::R_LANAI_LO16; 640b57cec5SDimitry Andric break; 650b57cec5SDimitry Andric case Lanai::FIXUP_LANAI_NONE: 660b57cec5SDimitry Andric Type = ELF::R_LANAI_NONE; 670b57cec5SDimitry Andric break; 680b57cec5SDimitry Andric 690b57cec5SDimitry Andric default: 700b57cec5SDimitry Andric llvm_unreachable("Invalid fixup kind!"); 710b57cec5SDimitry Andric } 720b57cec5SDimitry Andric return Type; 730b57cec5SDimitry Andric } 740b57cec5SDimitry Andric 75*5f757f3fSDimitry Andric bool LanaiELFObjectWriter::needsRelocateWithSymbol(const MCValue &, 76*5f757f3fSDimitry Andric const MCSymbol &, 770b57cec5SDimitry Andric unsigned Type) const { 780b57cec5SDimitry Andric switch (Type) { 790b57cec5SDimitry Andric case ELF::R_LANAI_21: 800b57cec5SDimitry Andric case ELF::R_LANAI_21_F: 810b57cec5SDimitry Andric case ELF::R_LANAI_25: 820b57cec5SDimitry Andric case ELF::R_LANAI_32: 830b57cec5SDimitry Andric case ELF::R_LANAI_HI16: 840b57cec5SDimitry Andric return true; 850b57cec5SDimitry Andric default: 860b57cec5SDimitry Andric return false; 870b57cec5SDimitry Andric } 880b57cec5SDimitry Andric } 890b57cec5SDimitry Andric 900b57cec5SDimitry Andric std::unique_ptr<MCObjectTargetWriter> 910b57cec5SDimitry Andric llvm::createLanaiELFObjectWriter(uint8_t OSABI) { 928bcb0991SDimitry Andric return std::make_unique<LanaiELFObjectWriter>(OSABI); 930b57cec5SDimitry Andric } 94