1 //===-------- MipsELFStreamer.cpp - ELF Object Output ---------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "MipsELFStreamer.h"
11 #include "MipsTargetStreamer.h"
12 #include "llvm/MC/MCInst.h"
13 #include "llvm/MC/MCSymbolELF.h"
14 #include "llvm/Support/ELF.h"
15
16 using namespace llvm;
17
EmitInstruction(const MCInst & Inst,const MCSubtargetInfo & STI)18 void MipsELFStreamer::EmitInstruction(const MCInst &Inst,
19 const MCSubtargetInfo &STI) {
20 MCELFStreamer::EmitInstruction(Inst, STI);
21
22 MCContext &Context = getContext();
23 const MCRegisterInfo *MCRegInfo = Context.getRegisterInfo();
24
25 for (unsigned OpIndex = 0; OpIndex < Inst.getNumOperands(); ++OpIndex) {
26 const MCOperand &Op = Inst.getOperand(OpIndex);
27
28 if (!Op.isReg())
29 continue;
30
31 unsigned Reg = Op.getReg();
32 RegInfoRecord->SetPhysRegUsed(Reg, MCRegInfo);
33 }
34
35 createPendingLabelRelocs();
36 }
37
createPendingLabelRelocs()38 void MipsELFStreamer::createPendingLabelRelocs() {
39 MipsTargetELFStreamer *ELFTargetStreamer =
40 static_cast<MipsTargetELFStreamer *>(getTargetStreamer());
41
42 // FIXME: Also mark labels when in MIPS16 mode.
43 if (ELFTargetStreamer->isMicroMipsEnabled()) {
44 for (auto *L : Labels) {
45 auto *Label = cast<MCSymbolELF>(L);
46 getAssembler().registerSymbol(*Label);
47 Label->setOther(ELF::STO_MIPS_MICROMIPS);
48 }
49 }
50
51 Labels.clear();
52 }
53
EmitLabel(MCSymbol * Symbol)54 void MipsELFStreamer::EmitLabel(MCSymbol *Symbol) {
55 MCELFStreamer::EmitLabel(Symbol);
56 Labels.push_back(Symbol);
57 }
58
SwitchSection(MCSection * Section,const MCExpr * Subsection)59 void MipsELFStreamer::SwitchSection(MCSection *Section,
60 const MCExpr *Subsection) {
61 MCELFStreamer::SwitchSection(Section, Subsection);
62 Labels.clear();
63 }
64
EmitValueImpl(const MCExpr * Value,unsigned Size,SMLoc Loc)65 void MipsELFStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
66 SMLoc Loc) {
67 MCELFStreamer::EmitValueImpl(Value, Size, Loc);
68 Labels.clear();
69 }
70
EmitMipsOptionRecords()71 void MipsELFStreamer::EmitMipsOptionRecords() {
72 for (const auto &I : MipsOptionRecords)
73 I->EmitMipsOptionRecord();
74 }
75
createMipsELFStreamer(MCContext & Context,MCAsmBackend & MAB,raw_pwrite_stream & OS,MCCodeEmitter * Emitter,bool RelaxAll)76 MCELFStreamer *llvm::createMipsELFStreamer(MCContext &Context,
77 MCAsmBackend &MAB,
78 raw_pwrite_stream &OS,
79 MCCodeEmitter *Emitter,
80 bool RelaxAll) {
81 return new MipsELFStreamer(Context, MAB, OS, Emitter);
82 }
83