76 lines · cpp
1//===-- SparcTargetStreamer.cpp - Sparc 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-exception6//7//===----------------------------------------------------------------------===//8//9// This file provides Sparc specific target streamer methods.10//11//===----------------------------------------------------------------------===//12 13#include "SparcTargetStreamer.h"14#include "SparcInstPrinter.h"15#include "SparcMCTargetDesc.h"16#include "llvm/BinaryFormat/ELF.h"17#include "llvm/MC/MCELFObjectWriter.h"18#include "llvm/MC/MCRegister.h"19#include "llvm/MC/MCSubtargetInfo.h"20#include "llvm/Support/FormattedStream.h"21 22using namespace llvm;23 24static unsigned getEFlagsForFeatureSet(const MCSubtargetInfo &STI) {25 unsigned EFlags = 0;26 27 if (STI.hasFeature(Sparc::FeatureV8Plus))28 EFlags |= ELF::EF_SPARC_32PLUS;29 30 if (STI.hasFeature(Sparc::FeatureVIS))31 EFlags |= ELF::EF_SPARC_SUN_US1;32 33 if (STI.hasFeature(Sparc::FeatureVIS2))34 EFlags |= ELF::EF_SPARC_SUN_US3;35 36 // VIS 3 and other ISA extensions doesn't set any flags.37 38 return EFlags;39}40 41// pin vtable to this file42SparcTargetStreamer::SparcTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}43 44void SparcTargetStreamer::anchor() {}45 46SparcTargetAsmStreamer::SparcTargetAsmStreamer(MCStreamer &S,47 formatted_raw_ostream &OS)48 : SparcTargetStreamer(S), OS(OS) {}49 50void SparcTargetAsmStreamer::emitSparcRegisterIgnore(unsigned reg) {51 OS << "\t.register "52 << "%" << StringRef(SparcInstPrinter::getRegisterName(reg)).lower()53 << ", #ignore\n";54}55 56void SparcTargetAsmStreamer::emitSparcRegisterScratch(unsigned reg) {57 OS << "\t.register "58 << "%" << StringRef(SparcInstPrinter::getRegisterName(reg)).lower()59 << ", #scratch\n";60}61 62SparcTargetELFStreamer::SparcTargetELFStreamer(MCStreamer &S,63 const MCSubtargetInfo &STI)64 : SparcTargetStreamer(S) {65 ELFObjectWriter &W = getStreamer().getWriter();66 unsigned EFlags = W.getELFHeaderEFlags();67 68 EFlags |= getEFlagsForFeatureSet(STI);69 70 W.setELFHeaderEFlags(EFlags);71}72 73MCELFStreamer &SparcTargetELFStreamer::getStreamer() {74 return static_cast<MCELFStreamer &>(Streamer);75}76