//===-- RISCVELFObjectWriter.cpp - RISCV ELF Writer -----------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "MCTargetDesc/RISCVFixupKinds.h" #include "MCTargetDesc/RISCVMCTargetDesc.h" #include "llvm/MC/MCELFObjectWriter.h" #include "llvm/MC/MCFixup.h" #include "llvm/MC/MCObjectWriter.h" #include "llvm/Support/ErrorHandling.h" using namespace llvm; namespace { class RISCVELFObjectWriter : public MCELFObjectTargetWriter { public: RISCVELFObjectWriter(uint8_t OSABI, bool Is64Bit); ~RISCVELFObjectWriter() override; protected: unsigned getRelocType(MCContext &Ctx, const MCValue &Target, const MCFixup &Fixup, bool IsPCRel) const override; }; } RISCVELFObjectWriter::RISCVELFObjectWriter(uint8_t OSABI, bool Is64Bit) : MCELFObjectTargetWriter(Is64Bit, OSABI, ELF::EM_RISCV, /*HasRelocationAddend*/ true) {} RISCVELFObjectWriter::~RISCVELFObjectWriter() {} unsigned RISCVELFObjectWriter::getRelocType(MCContext &Ctx, const MCValue &Target, const MCFixup &Fixup, bool IsPCRel) const { // Determine the type of the relocation switch ((unsigned)Fixup.getKind()) { default: llvm_unreachable("invalid fixup kind!"); case FK_Data_4: return ELF::R_RISCV_32; case FK_Data_8: return ELF::R_RISCV_64; case RISCV::fixup_riscv_hi20: return ELF::R_RISCV_HI20; case RISCV::fixup_riscv_lo12_i: return ELF::R_RISCV_LO12_I; case RISCV::fixup_riscv_lo12_s: return ELF::R_RISCV_LO12_S; case RISCV::fixup_riscv_pcrel_hi20: return ELF::R_RISCV_PCREL_HI20; case RISCV::fixup_riscv_jal: return ELF::R_RISCV_JAL; case RISCV::fixup_riscv_branch: return ELF::R_RISCV_BRANCH; case RISCV::fixup_riscv_rvc_jump: return ELF::R_RISCV_RVC_JUMP; case RISCV::fixup_riscv_rvc_branch: return ELF::R_RISCV_RVC_BRANCH; } } std::unique_ptr llvm::createRISCVELFObjectWriter(raw_pwrite_stream &OS, uint8_t OSABI, bool Is64Bit) { return createELFObjectWriter( llvm::make_unique(OSABI, Is64Bit), OS, /*IsLittleEndian=*/true); }