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
RISCVTargetStreamer(MCStreamer & S)23 RISCVTargetStreamer::RISCVTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
24
finish()25 void RISCVTargetStreamer::finish() { finishAttributeSection(); }
reset()26 void RISCVTargetStreamer::reset() {}
27
emitDirectiveOptionPush()28 void RISCVTargetStreamer::emitDirectiveOptionPush() {}
emitDirectiveOptionPop()29 void RISCVTargetStreamer::emitDirectiveOptionPop() {}
emitDirectiveOptionPIC()30 void RISCVTargetStreamer::emitDirectiveOptionPIC() {}
emitDirectiveOptionNoPIC()31 void RISCVTargetStreamer::emitDirectiveOptionNoPIC() {}
emitDirectiveOptionRVC()32 void RISCVTargetStreamer::emitDirectiveOptionRVC() {}
emitDirectiveOptionNoRVC()33 void RISCVTargetStreamer::emitDirectiveOptionNoRVC() {}
emitDirectiveOptionRelax()34 void RISCVTargetStreamer::emitDirectiveOptionRelax() {}
emitDirectiveOptionNoRelax()35 void RISCVTargetStreamer::emitDirectiveOptionNoRelax() {}
emitDirectiveVariantCC(MCSymbol & Symbol)36 void RISCVTargetStreamer::emitDirectiveVariantCC(MCSymbol &Symbol) {}
emitAttribute(unsigned Attribute,unsigned Value)37 void RISCVTargetStreamer::emitAttribute(unsigned Attribute, unsigned Value) {}
finishAttributeSection()38 void RISCVTargetStreamer::finishAttributeSection() {}
emitTextAttribute(unsigned Attribute,StringRef String)39 void RISCVTargetStreamer::emitTextAttribute(unsigned Attribute,
40 StringRef String) {}
emitIntTextAttribute(unsigned Attribute,unsigned IntValue,StringRef StringValue)41 void RISCVTargetStreamer::emitIntTextAttribute(unsigned Attribute,
42 unsigned IntValue,
43 StringRef StringValue) {}
setTargetABI(RISCVABI::ABI ABI)44 void RISCVTargetStreamer::setTargetABI(RISCVABI::ABI ABI) {
45 assert(ABI != RISCVABI::ABI_Unknown && "Improperly initialized target ABI");
46 TargetABI = ABI;
47 }
48
emitTargetAttributes(const MCSubtargetInfo & STI)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
RISCVTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS)66 RISCVTargetAsmStreamer::RISCVTargetAsmStreamer(MCStreamer &S,
67 formatted_raw_ostream &OS)
68 : RISCVTargetStreamer(S), OS(OS) {}
69
emitDirectiveOptionPush()70 void RISCVTargetAsmStreamer::emitDirectiveOptionPush() {
71 OS << "\t.option\tpush\n";
72 }
73
emitDirectiveOptionPop()74 void RISCVTargetAsmStreamer::emitDirectiveOptionPop() {
75 OS << "\t.option\tpop\n";
76 }
77
emitDirectiveOptionPIC()78 void RISCVTargetAsmStreamer::emitDirectiveOptionPIC() {
79 OS << "\t.option\tpic\n";
80 }
81
emitDirectiveOptionNoPIC()82 void RISCVTargetAsmStreamer::emitDirectiveOptionNoPIC() {
83 OS << "\t.option\tnopic\n";
84 }
85
emitDirectiveOptionRVC()86 void RISCVTargetAsmStreamer::emitDirectiveOptionRVC() {
87 OS << "\t.option\trvc\n";
88 }
89
emitDirectiveOptionNoRVC()90 void RISCVTargetAsmStreamer::emitDirectiveOptionNoRVC() {
91 OS << "\t.option\tnorvc\n";
92 }
93
emitDirectiveOptionRelax()94 void RISCVTargetAsmStreamer::emitDirectiveOptionRelax() {
95 OS << "\t.option\trelax\n";
96 }
97
emitDirectiveOptionNoRelax()98 void RISCVTargetAsmStreamer::emitDirectiveOptionNoRelax() {
99 OS << "\t.option\tnorelax\n";
100 }
101
emitDirectiveVariantCC(MCSymbol & Symbol)102 void RISCVTargetAsmStreamer::emitDirectiveVariantCC(MCSymbol &Symbol) {
103 OS << "\t.variant_cc\t" << Symbol.getName() << "\n";
104 }
105
emitAttribute(unsigned Attribute,unsigned Value)106 void RISCVTargetAsmStreamer::emitAttribute(unsigned Attribute, unsigned Value) {
107 OS << "\t.attribute\t" << Attribute << ", " << Twine(Value) << "\n";
108 }
109
emitTextAttribute(unsigned Attribute,StringRef String)110 void RISCVTargetAsmStreamer::emitTextAttribute(unsigned Attribute,
111 StringRef String) {
112 OS << "\t.attribute\t" << Attribute << ", \"" << String << "\"\n";
113 }
114
emitIntTextAttribute(unsigned Attribute,unsigned IntValue,StringRef StringValue)115 void RISCVTargetAsmStreamer::emitIntTextAttribute(unsigned Attribute,
116 unsigned IntValue,
117 StringRef StringValue) {}
118
finishAttributeSection()119 void RISCVTargetAsmStreamer::finishAttributeSection() {}
120