| //===-- RISCVELFStreamer.cpp - RISCV ELF Target Streamer Methods ----------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file provides RISCV specific target streamer methods. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "RISCVELFStreamer.h" |
| #include "MCTargetDesc/RISCVAsmBackend.h" |
| #include "RISCVMCTargetDesc.h" |
| #include "Utils/RISCVBaseInfo.h" |
| #include "llvm/BinaryFormat/ELF.h" |
| #include "llvm/MC/MCSubtargetInfo.h" |
| |
| using namespace llvm; |
| |
| // This part is for ELF object output. |
| RISCVTargetELFStreamer::RISCVTargetELFStreamer(MCStreamer &S, |
| const MCSubtargetInfo &STI) |
| : RISCVTargetStreamer(S) { |
| MCAssembler &MCA = getStreamer().getAssembler(); |
| const FeatureBitset &Features = STI.getFeatureBits(); |
| auto &MAB = static_cast<RISCVAsmBackend &>(MCA.getBackend()); |
| RISCVABI::ABI ABI = MAB.getTargetABI(); |
| assert(ABI != RISCVABI::ABI_Unknown && "Improperly initialised target ABI"); |
| |
| unsigned EFlags = MCA.getELFHeaderEFlags(); |
| |
| if (Features[RISCV::FeatureStdExtC]) |
| EFlags |= ELF::EF_RISCV_RVC; |
| |
| switch (ABI) { |
| case RISCVABI::ABI_ILP32: |
| case RISCVABI::ABI_LP64: |
| break; |
| case RISCVABI::ABI_ILP32F: |
| case RISCVABI::ABI_LP64F: |
| EFlags |= ELF::EF_RISCV_FLOAT_ABI_SINGLE; |
| break; |
| case RISCVABI::ABI_ILP32D: |
| case RISCVABI::ABI_LP64D: |
| EFlags |= ELF::EF_RISCV_FLOAT_ABI_DOUBLE; |
| break; |
| case RISCVABI::ABI_ILP32E: |
| EFlags |= ELF::EF_RISCV_RVE; |
| break; |
| case RISCVABI::ABI_Unknown: |
| llvm_unreachable("Improperly initialised target ABI"); |
| } |
| |
| MCA.setELFHeaderEFlags(EFlags); |
| } |
| |
| MCELFStreamer &RISCVTargetELFStreamer::getStreamer() { |
| return static_cast<MCELFStreamer &>(Streamer); |
| } |
| |
| void RISCVTargetELFStreamer::emitDirectiveOptionPush() {} |
| void RISCVTargetELFStreamer::emitDirectiveOptionPop() {} |
| void RISCVTargetELFStreamer::emitDirectiveOptionRVC() {} |
| void RISCVTargetELFStreamer::emitDirectiveOptionNoRVC() {} |
| void RISCVTargetELFStreamer::emitDirectiveOptionRelax() {} |
| void RISCVTargetELFStreamer::emitDirectiveOptionNoRelax() {} |