1//===-- RISCVELFStreamer.h - RISC-V ELF Target Streamer ---------*- C++ -*-===//
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#ifndef LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVELFSTREAMER_H
10#define LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVELFSTREAMER_H
11
12#include "RISCVTargetStreamer.h"
13#include "llvm/MC/MCELFStreamer.h"
14
15namespace llvm {
16
17class RISCVELFStreamer : public MCELFStreamer {
18 void reset() override;
19 void emitDataMappingSymbol();
20 void emitInstructionsMappingSymbol();
21 void emitMappingSymbol(StringRef Name);
22
23 enum ElfMappingSymbol { EMS_None, EMS_Instructions, EMS_Data };
24
25 DenseMap<const MCSection *, ElfMappingSymbol> LastMappingSymbols;
26 ElfMappingSymbol LastEMS = EMS_None;
27
28public:
29 RISCVELFStreamer(MCContext &C, std::unique_ptr<MCAsmBackend> MAB,
30 std::unique_ptr<MCObjectWriter> MOW,
31 std::unique_ptr<MCCodeEmitter> MCE)
32 : MCELFStreamer(C, std::move(MAB), std::move(MOW), std::move(MCE)) {}
33
34 void changeSection(MCSection *Section, uint32_t Subsection) override;
35 void emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
36 void emitBytes(StringRef Data) override;
37 void emitFill(const MCExpr &NumBytes, uint64_t FillValue, SMLoc Loc) override;
38 void emitValueImpl(const MCExpr *Value, unsigned Size, SMLoc Loc) override;
39};
40
41class RISCVTargetELFStreamer : public RISCVTargetStreamer {
42private:
43 StringRef CurrentVendor;
44
45 MCSection *AttributeSection = nullptr;
46
47 void emitAttribute(unsigned Attribute, unsigned Value) override;
48 void emitTextAttribute(unsigned Attribute, StringRef String) override;
49 void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
50 StringRef StringValue) override;
51 void finishAttributeSection() override;
52
53 void reset() override;
54
55public:
56 RISCVELFStreamer &getStreamer();
57 RISCVTargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI);
58
59 void emitDirectiveOptionExact() override;
60 void emitDirectiveOptionNoExact() override;
61 void emitDirectiveOptionPIC() override;
62 void emitDirectiveOptionNoPIC() override;
63 void emitDirectiveOptionPop() override;
64 void emitDirectiveOptionPush() override;
65 void emitDirectiveOptionRelax() override;
66 void emitDirectiveOptionNoRelax() override;
67 void emitDirectiveOptionRVC() override;
68 void emitDirectiveOptionNoRVC() override;
69 void emitDirectiveVariantCC(MCSymbol &Symbol) override;
70
71 void finish() override;
72};
73
74MCStreamer *createRISCVELFStreamer(const Triple &, MCContext &C,
75 std::unique_ptr<MCAsmBackend> &&MAB,
76 std::unique_ptr<MCObjectWriter> &&MOW,
77 std::unique_ptr<MCCodeEmitter> &&MCE);
78} // namespace llvm
79
80#endif // LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVELFSTREAMER_H
81