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 "RISCVSubtarget.h"
15#include "llvm/Support/FormattedStream.h"
16#include "llvm/Support/RISCVAttributes.h"
17
18using namespace llvm;
19
20RISCVTargetStreamer::RISCVTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
21
22void RISCVTargetStreamer::finish() { finishAttributeSection(); }
23
24void RISCVTargetStreamer::emitDirectiveOptionPush() {}
25void RISCVTargetStreamer::emitDirectiveOptionPop() {}
26void RISCVTargetStreamer::emitDirectiveOptionPIC() {}
27void RISCVTargetStreamer::emitDirectiveOptionNoPIC() {}
28void RISCVTargetStreamer::emitDirectiveOptionRVC() {}
29void RISCVTargetStreamer::emitDirectiveOptionNoRVC() {}
30void RISCVTargetStreamer::emitDirectiveOptionRelax() {}
31void RISCVTargetStreamer::emitDirectiveOptionNoRelax() {}
32void RISCVTargetStreamer::emitAttribute(unsigned Attribute, unsigned Value) {}
33void RISCVTargetStreamer::finishAttributeSection() {}
34void RISCVTargetStreamer::emitTextAttribute(unsigned Attribute,
35                                            StringRef String) {}
36void RISCVTargetStreamer::emitIntTextAttribute(unsigned Attribute,
37                                               unsigned IntValue,
38                                               StringRef StringValue) {}
39
40void RISCVTargetStreamer::emitTargetAttributes(const MCSubtargetInfo &STI) {
41  if (STI.hasFeature(RISCV::FeatureRV32E))
42    emitAttribute(RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_4);
43  else
44    emitAttribute(RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_16);
45
46  std::string Arch = "rv32";
47  if (STI.hasFeature(RISCV::Feature64Bit))
48    Arch = "rv64";
49  if (STI.hasFeature(RISCV::FeatureRV32E))
50    Arch += "e1p9";
51  else
52    Arch += "i2p0";
53  if (STI.hasFeature(RISCV::FeatureStdExtM))
54    Arch += "_m2p0";
55  if (STI.hasFeature(RISCV::FeatureStdExtA))
56    Arch += "_a2p0";
57  if (STI.hasFeature(RISCV::FeatureStdExtF))
58    Arch += "_f2p0";
59  if (STI.hasFeature(RISCV::FeatureStdExtD))
60    Arch += "_d2p0";
61  if (STI.hasFeature(RISCV::FeatureStdExtC))
62    Arch += "_c2p0";
63
64  emitTextAttribute(RISCVAttrs::ARCH, Arch);
65}
66
67// This part is for ascii assembly output
68RISCVTargetAsmStreamer::RISCVTargetAsmStreamer(MCStreamer &S,
69                                               formatted_raw_ostream &OS)
70    : RISCVTargetStreamer(S), OS(OS) {}
71
72void RISCVTargetAsmStreamer::emitDirectiveOptionPush() {
73  OS << "\t.option\tpush\n";
74}
75
76void RISCVTargetAsmStreamer::emitDirectiveOptionPop() {
77  OS << "\t.option\tpop\n";
78}
79
80void RISCVTargetAsmStreamer::emitDirectiveOptionPIC() {
81  OS << "\t.option\tpic\n";
82}
83
84void RISCVTargetAsmStreamer::emitDirectiveOptionNoPIC() {
85  OS << "\t.option\tnopic\n";
86}
87
88void RISCVTargetAsmStreamer::emitDirectiveOptionRVC() {
89  OS << "\t.option\trvc\n";
90}
91
92void RISCVTargetAsmStreamer::emitDirectiveOptionNoRVC() {
93  OS << "\t.option\tnorvc\n";
94}
95
96void RISCVTargetAsmStreamer::emitDirectiveOptionRelax() {
97  OS << "\t.option\trelax\n";
98}
99
100void RISCVTargetAsmStreamer::emitDirectiveOptionNoRelax() {
101  OS << "\t.option\tnorelax\n";
102}
103
104void RISCVTargetAsmStreamer::emitAttribute(unsigned Attribute, unsigned Value) {
105  OS << "\t.attribute\t" << Attribute << ", " << Twine(Value) << "\n";
106}
107
108void RISCVTargetAsmStreamer::emitTextAttribute(unsigned Attribute,
109                                               StringRef String) {
110  OS << "\t.attribute\t" << Attribute << ", \"" << String << "\"\n";
111}
112
113void RISCVTargetAsmStreamer::emitIntTextAttribute(unsigned Attribute,
114                                                  unsigned IntValue,
115                                                  StringRef StringValue) {}
116
117void RISCVTargetAsmStreamer::finishAttributeSection() {}
118