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/Support/FormattedStream.h"
17 #include "llvm/Support/RISCVAttributes.h"
18 #include "llvm/Support/RISCVISAInfo.h"
19
20 using namespace llvm;
21
RISCVTargetStreamer(MCStreamer & S)22 RISCVTargetStreamer::RISCVTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
23
finish()24 void RISCVTargetStreamer::finish() { finishAttributeSection(); }
reset()25 void RISCVTargetStreamer::reset() {}
26
emitDirectiveOptionPush()27 void RISCVTargetStreamer::emitDirectiveOptionPush() {}
emitDirectiveOptionPop()28 void RISCVTargetStreamer::emitDirectiveOptionPop() {}
emitDirectiveOptionPIC()29 void RISCVTargetStreamer::emitDirectiveOptionPIC() {}
emitDirectiveOptionNoPIC()30 void RISCVTargetStreamer::emitDirectiveOptionNoPIC() {}
emitDirectiveOptionRVC()31 void RISCVTargetStreamer::emitDirectiveOptionRVC() {}
emitDirectiveOptionNoRVC()32 void RISCVTargetStreamer::emitDirectiveOptionNoRVC() {}
emitDirectiveOptionRelax()33 void RISCVTargetStreamer::emitDirectiveOptionRelax() {}
emitDirectiveOptionNoRelax()34 void RISCVTargetStreamer::emitDirectiveOptionNoRelax() {}
emitAttribute(unsigned Attribute,unsigned Value)35 void RISCVTargetStreamer::emitAttribute(unsigned Attribute, unsigned Value) {}
finishAttributeSection()36 void RISCVTargetStreamer::finishAttributeSection() {}
emitTextAttribute(unsigned Attribute,StringRef String)37 void RISCVTargetStreamer::emitTextAttribute(unsigned Attribute,
38 StringRef String) {}
emitIntTextAttribute(unsigned Attribute,unsigned IntValue,StringRef StringValue)39 void RISCVTargetStreamer::emitIntTextAttribute(unsigned Attribute,
40 unsigned IntValue,
41 StringRef StringValue) {}
setTargetABI(RISCVABI::ABI ABI)42 void RISCVTargetStreamer::setTargetABI(RISCVABI::ABI ABI) {
43 assert(ABI != RISCVABI::ABI_Unknown && "Improperly initialized target ABI");
44 TargetABI = ABI;
45 }
46
emitTargetAttributes(const MCSubtargetInfo & STI)47 void RISCVTargetStreamer::emitTargetAttributes(const MCSubtargetInfo &STI) {
48 if (STI.hasFeature(RISCV::FeatureRV32E))
49 emitAttribute(RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_4);
50 else
51 emitAttribute(RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_16);
52
53 auto ParseResult = RISCVFeatures::parseFeatureBits(
54 STI.hasFeature(RISCV::Feature64Bit), STI.getFeatureBits());
55 if (!ParseResult) {
56 report_fatal_error(ParseResult.takeError());
57 } else {
58 auto &ISAInfo = *ParseResult;
59 emitTextAttribute(RISCVAttrs::ARCH, ISAInfo->toString());
60 }
61 }
62
63 // This part is for ascii assembly output
RISCVTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS)64 RISCVTargetAsmStreamer::RISCVTargetAsmStreamer(MCStreamer &S,
65 formatted_raw_ostream &OS)
66 : RISCVTargetStreamer(S), OS(OS) {}
67
emitDirectiveOptionPush()68 void RISCVTargetAsmStreamer::emitDirectiveOptionPush() {
69 OS << "\t.option\tpush\n";
70 }
71
emitDirectiveOptionPop()72 void RISCVTargetAsmStreamer::emitDirectiveOptionPop() {
73 OS << "\t.option\tpop\n";
74 }
75
emitDirectiveOptionPIC()76 void RISCVTargetAsmStreamer::emitDirectiveOptionPIC() {
77 OS << "\t.option\tpic\n";
78 }
79
emitDirectiveOptionNoPIC()80 void RISCVTargetAsmStreamer::emitDirectiveOptionNoPIC() {
81 OS << "\t.option\tnopic\n";
82 }
83
emitDirectiveOptionRVC()84 void RISCVTargetAsmStreamer::emitDirectiveOptionRVC() {
85 OS << "\t.option\trvc\n";
86 }
87
emitDirectiveOptionNoRVC()88 void RISCVTargetAsmStreamer::emitDirectiveOptionNoRVC() {
89 OS << "\t.option\tnorvc\n";
90 }
91
emitDirectiveOptionRelax()92 void RISCVTargetAsmStreamer::emitDirectiveOptionRelax() {
93 OS << "\t.option\trelax\n";
94 }
95
emitDirectiveOptionNoRelax()96 void RISCVTargetAsmStreamer::emitDirectiveOptionNoRelax() {
97 OS << "\t.option\tnorelax\n";
98 }
99
emitAttribute(unsigned Attribute,unsigned Value)100 void RISCVTargetAsmStreamer::emitAttribute(unsigned Attribute, unsigned Value) {
101 OS << "\t.attribute\t" << Attribute << ", " << Twine(Value) << "\n";
102 }
103
emitTextAttribute(unsigned Attribute,StringRef String)104 void RISCVTargetAsmStreamer::emitTextAttribute(unsigned Attribute,
105 StringRef String) {
106 OS << "\t.attribute\t" << Attribute << ", \"" << String << "\"\n";
107 }
108
emitIntTextAttribute(unsigned Attribute,unsigned IntValue,StringRef StringValue)109 void RISCVTargetAsmStreamer::emitIntTextAttribute(unsigned Attribute,
110 unsigned IntValue,
111 StringRef StringValue) {}
112
finishAttributeSection()113 void RISCVTargetAsmStreamer::finishAttributeSection() {}
114