mirror of
https://github.com/c64scene-ar/llvm-6502.git
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7521964d28
This starts merging MCSection and MCSectionData. There are a few issues with the current split between MCSection and MCSectionData. * It optimizes the the not as important case. We want the production of .o files to be really fast, but the split puts the information used for .o emission in a separate data structure. * The ELF/COFF/MachO hierarchy is not represented in MCSectionData, leading to some ad-hoc ways to represent the various flags. * It makes it harder to remember where each item is. The attached patch starts merging the two by moving the alignment from MCSectionData to MCSection. Most of the patch is actually just dropping 'const', since MCSectionData is mutable, but MCSection was not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237936 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
//===-------- MipsELFStreamer.cpp - ELF Object Output ---------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "MipsELFStreamer.h"
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#include "MipsTargetStreamer.h"
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#include "llvm/MC/MCELF.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/Support/ELF.h"
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using namespace llvm;
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void MipsELFStreamer::EmitInstruction(const MCInst &Inst,
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const MCSubtargetInfo &STI) {
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MCELFStreamer::EmitInstruction(Inst, STI);
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MCContext &Context = getContext();
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const MCRegisterInfo *MCRegInfo = Context.getRegisterInfo();
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for (unsigned OpIndex = 0; OpIndex < Inst.getNumOperands(); ++OpIndex) {
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const MCOperand &Op = Inst.getOperand(OpIndex);
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if (!Op.isReg())
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continue;
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unsigned Reg = Op.getReg();
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RegInfoRecord->SetPhysRegUsed(Reg, MCRegInfo);
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}
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createPendingLabelRelocs();
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}
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void MipsELFStreamer::createPendingLabelRelocs() {
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MipsTargetELFStreamer *ELFTargetStreamer =
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static_cast<MipsTargetELFStreamer *>(getTargetStreamer());
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// FIXME: Also mark labels when in MIPS16 mode.
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if (ELFTargetStreamer->isMicroMipsEnabled()) {
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for (auto Label : Labels) {
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MCSymbolData &Data = getOrCreateSymbolData(Label);
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// The "other" values are stored in the last 6 bits of the second byte.
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// The traditional defines for STO values assume the full byte and thus
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// the shift to pack it.
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MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
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}
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}
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Labels.clear();
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}
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void MipsELFStreamer::EmitLabel(MCSymbol *Symbol) {
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MCELFStreamer::EmitLabel(Symbol);
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Labels.push_back(Symbol);
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}
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void MipsELFStreamer::SwitchSection(MCSection *Section,
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const MCExpr *Subsection) {
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MCELFStreamer::SwitchSection(Section, Subsection);
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Labels.clear();
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}
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void MipsELFStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
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const SMLoc &Loc) {
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MCELFStreamer::EmitValueImpl(Value, Size, Loc);
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Labels.clear();
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}
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void MipsELFStreamer::EmitMipsOptionRecords() {
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for (const auto &I : MipsOptionRecords)
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I->EmitMipsOptionRecord();
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}
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MCELFStreamer *llvm::createMipsELFStreamer(MCContext &Context,
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MCAsmBackend &MAB,
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raw_pwrite_stream &OS,
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MCCodeEmitter *Emitter,
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bool RelaxAll) {
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return new MipsELFStreamer(Context, MAB, OS, Emitter);
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}
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