1 //===-- RISCVTargetStreamer.cpp - RISCV Target Streamer Methods -----------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file provides RISCV specific target streamer methods. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "RISCVTargetStreamer.h" 14 #include "RISCVBaseInfo.h" 15 #include "RISCVMCTargetDesc.h" 16 #include "llvm/MC/MCSymbol.h" 17 #include "llvm/Support/FormattedStream.h" 18 #include "llvm/Support/RISCVAttributes.h" 19 #include "llvm/Support/RISCVISAInfo.h" 20 21 using namespace llvm; 22 23 RISCVTargetStreamer::RISCVTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {} 24 25 void RISCVTargetStreamer::finish() { finishAttributeSection(); } 26 void RISCVTargetStreamer::reset() {} 27 28 void RISCVTargetStreamer::emitDirectiveOptionPush() {} 29 void RISCVTargetStreamer::emitDirectiveOptionPop() {} 30 void RISCVTargetStreamer::emitDirectiveOptionPIC() {} 31 void RISCVTargetStreamer::emitDirectiveOptionNoPIC() {} 32 void RISCVTargetStreamer::emitDirectiveOptionRVC() {} 33 void RISCVTargetStreamer::emitDirectiveOptionNoRVC() {} 34 void RISCVTargetStreamer::emitDirectiveOptionRelax() {} 35 void RISCVTargetStreamer::emitDirectiveOptionNoRelax() {} 36 void RISCVTargetStreamer::emitDirectiveVariantCC(MCSymbol &Symbol) {} 37 void RISCVTargetStreamer::emitAttribute(unsigned Attribute, unsigned Value) {} 38 void RISCVTargetStreamer::finishAttributeSection() {} 39 void RISCVTargetStreamer::emitTextAttribute(unsigned Attribute, 40 StringRef String) {} 41 void RISCVTargetStreamer::emitIntTextAttribute(unsigned Attribute, 42 unsigned IntValue, 43 StringRef StringValue) {} 44 void RISCVTargetStreamer::setTargetABI(RISCVABI::ABI ABI) { 45 assert(ABI != RISCVABI::ABI_Unknown && "Improperly initialized target ABI"); 46 TargetABI = ABI; 47 } 48 49 void RISCVTargetStreamer::emitTargetAttributes(const MCSubtargetInfo &STI) { 50 if (STI.hasFeature(RISCV::FeatureRV32E)) 51 emitAttribute(RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_4); 52 else 53 emitAttribute(RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_16); 54 55 auto ParseResult = RISCVFeatures::parseFeatureBits( 56 STI.hasFeature(RISCV::Feature64Bit), STI.getFeatureBits()); 57 if (!ParseResult) { 58 report_fatal_error(ParseResult.takeError()); 59 } else { 60 auto &ISAInfo = *ParseResult; 61 emitTextAttribute(RISCVAttrs::ARCH, ISAInfo->toString()); 62 } 63 } 64 65 // This part is for ascii assembly output 66 RISCVTargetAsmStreamer::RISCVTargetAsmStreamer(MCStreamer &S, 67 formatted_raw_ostream &OS) 68 : RISCVTargetStreamer(S), OS(OS) {} 69 70 void RISCVTargetAsmStreamer::emitDirectiveOptionPush() { 71 OS << "\t.option\tpush\n"; 72 } 73 74 void RISCVTargetAsmStreamer::emitDirectiveOptionPop() { 75 OS << "\t.option\tpop\n"; 76 } 77 78 void RISCVTargetAsmStreamer::emitDirectiveOptionPIC() { 79 OS << "\t.option\tpic\n"; 80 } 81 82 void RISCVTargetAsmStreamer::emitDirectiveOptionNoPIC() { 83 OS << "\t.option\tnopic\n"; 84 } 85 86 void RISCVTargetAsmStreamer::emitDirectiveOptionRVC() { 87 OS << "\t.option\trvc\n"; 88 } 89 90 void RISCVTargetAsmStreamer::emitDirectiveOptionNoRVC() { 91 OS << "\t.option\tnorvc\n"; 92 } 93 94 void RISCVTargetAsmStreamer::emitDirectiveOptionRelax() { 95 OS << "\t.option\trelax\n"; 96 } 97 98 void RISCVTargetAsmStreamer::emitDirectiveOptionNoRelax() { 99 OS << "\t.option\tnorelax\n"; 100 } 101 102 void RISCVTargetAsmStreamer::emitDirectiveVariantCC(MCSymbol &Symbol) { 103 OS << "\t.variant_cc\t" << Symbol.getName() << "\n"; 104 } 105 106 void RISCVTargetAsmStreamer::emitAttribute(unsigned Attribute, unsigned Value) { 107 OS << "\t.attribute\t" << Attribute << ", " << Twine(Value) << "\n"; 108 } 109 110 void RISCVTargetAsmStreamer::emitTextAttribute(unsigned Attribute, 111 StringRef String) { 112 OS << "\t.attribute\t" << Attribute << ", \"" << String << "\"\n"; 113 } 114 115 void RISCVTargetAsmStreamer::emitIntTextAttribute(unsigned Attribute, 116 unsigned IntValue, 117 StringRef StringValue) {} 118 119 void RISCVTargetAsmStreamer::finishAttributeSection() {} 120