/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/include/llvm/MC/MCELFStreamer.h
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1 | | //===- MCELFStreamer.h - MCStreamer ELF Object File Interface ---*- 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_MC_MCELFSTREAMER_H |
10 | | #define LLVM_MC_MCELFSTREAMER_H |
11 | | |
12 | | #include "llvm/ADT/SmallVector.h" |
13 | | #include "llvm/MC/MCDirectives.h" |
14 | | #include "llvm/MC/MCObjectStreamer.h" |
15 | | |
16 | | namespace llvm { |
17 | | |
18 | | class MCAsmBackend; |
19 | | class MCCodeEmitter; |
20 | | class MCExpr; |
21 | | class MCInst; |
22 | | |
23 | | class MCELFStreamer : public MCObjectStreamer { |
24 | | public: |
25 | | MCELFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> TAB, |
26 | | std::unique_ptr<MCObjectWriter> OW, |
27 | | std::unique_ptr<MCCodeEmitter> Emitter); |
28 | | |
29 | 5.84k | ~MCELFStreamer() override = default; |
30 | | |
31 | | /// state management |
32 | 1.25k | void reset() override { |
33 | 1.25k | SeenIdent = false; |
34 | 1.25k | BundleGroups.clear(); |
35 | 1.25k | MCObjectStreamer::reset(); |
36 | 1.25k | } |
37 | | |
38 | | /// \name MCStreamer Interface |
39 | | /// @{ |
40 | | |
41 | | void InitSections(bool NoExecStack) override; |
42 | | void ChangeSection(MCSection *Section, const MCExpr *Subsection) override; |
43 | | void EmitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override; |
44 | | void EmitLabel(MCSymbol *Symbol, SMLoc Loc, MCFragment *F) override; |
45 | | void EmitAssemblerFlag(MCAssemblerFlag Flag) override; |
46 | | void EmitThumbFunc(MCSymbol *Func) override; |
47 | | void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override; |
48 | | bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override; |
49 | | void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override; |
50 | | void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, |
51 | | unsigned ByteAlignment) override; |
52 | | |
53 | | void emitELFSize(MCSymbol *Symbol, const MCExpr *Value) override; |
54 | | void emitELFSymverDirective(StringRef AliasName, |
55 | | const MCSymbol *Aliasee) override; |
56 | | |
57 | | void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size, |
58 | | unsigned ByteAlignment) override; |
59 | | |
60 | | void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr, |
61 | | uint64_t Size = 0, unsigned ByteAlignment = 0, |
62 | | SMLoc L = SMLoc()) override; |
63 | | void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size, |
64 | | unsigned ByteAlignment = 0) override; |
65 | | void EmitValueImpl(const MCExpr *Value, unsigned Size, |
66 | | SMLoc Loc = SMLoc()) override; |
67 | | |
68 | | void EmitIdent(StringRef IdentString) override; |
69 | | |
70 | | void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned) override; |
71 | | |
72 | | void emitCGProfileEntry(const MCSymbolRefExpr *From, |
73 | | const MCSymbolRefExpr *To, uint64_t Count) override; |
74 | | |
75 | | void FinishImpl() override; |
76 | | |
77 | | void EmitBundleAlignMode(unsigned AlignPow2) override; |
78 | | void EmitBundleLock(bool AlignToEnd) override; |
79 | | void EmitBundleUnlock() override; |
80 | | |
81 | | private: |
82 | | bool isBundleLocked() const; |
83 | | void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &) override; |
84 | | void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &) override; |
85 | | |
86 | | void fixSymbolsInTLSFixups(const MCExpr *expr); |
87 | | void finalizeCGProfileEntry(const MCSymbolRefExpr *&S); |
88 | | void finalizeCGProfile(); |
89 | | |
90 | | /// Merge the content of the fragment \p EF into the fragment \p DF. |
91 | | void mergeFragment(MCDataFragment *, MCDataFragment *); |
92 | | |
93 | | bool SeenIdent = false; |
94 | | |
95 | | /// BundleGroups - The stack of fragments holding the bundle-locked |
96 | | /// instructions. |
97 | | SmallVector<MCDataFragment *, 4> BundleGroups; |
98 | | }; |
99 | | |
100 | | MCELFStreamer *createARMELFStreamer(MCContext &Context, |
101 | | std::unique_ptr<MCAsmBackend> TAB, |
102 | | std::unique_ptr<MCObjectWriter> OW, |
103 | | std::unique_ptr<MCCodeEmitter> Emitter, |
104 | | bool RelaxAll, bool IsThumb); |
105 | | |
106 | | } // end namespace llvm |
107 | | |
108 | | #endif // LLVM_MC_MCELFSTREAMER_H |