aca971d336
Implement handling for `v8plus` feature bit to allow the user to switch between V8 and V8+ mode with 32-bit code. Currently this only sets the appropriate ELF machine type and flags; codegen changes will be done in future patches. This is done as a prerequisite for `-mv8plus` flag on clang (#98713).
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
//===-- SparcTargetStreamer.cpp - Sparc Target Streamer Methods -----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides Sparc specific target streamer methods.
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//
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//===----------------------------------------------------------------------===//
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#include "SparcTargetStreamer.h"
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#include "SparcInstPrinter.h"
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#include "SparcMCTargetDesc.h"
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#include "llvm/BinaryFormat/ELF.h"
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#include "llvm/MC/MCELFObjectWriter.h"
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#include "llvm/MC/MCRegister.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Support/FormattedStream.h"
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using namespace llvm;
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static unsigned getEFlagsForFeatureSet(const MCSubtargetInfo &STI) {
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unsigned EFlags = 0;
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if (STI.hasFeature(Sparc::FeatureV8Plus))
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EFlags |= ELF::EF_SPARC_32PLUS;
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return EFlags;
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}
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// pin vtable to this file
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SparcTargetStreamer::SparcTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
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void SparcTargetStreamer::anchor() {}
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SparcTargetAsmStreamer::SparcTargetAsmStreamer(MCStreamer &S,
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formatted_raw_ostream &OS)
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: SparcTargetStreamer(S), OS(OS) {}
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void SparcTargetAsmStreamer::emitSparcRegisterIgnore(unsigned reg) {
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OS << "\t.register "
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<< "%" << StringRef(SparcInstPrinter::getRegisterName(reg)).lower()
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<< ", #ignore\n";
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}
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void SparcTargetAsmStreamer::emitSparcRegisterScratch(unsigned reg) {
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OS << "\t.register "
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<< "%" << StringRef(SparcInstPrinter::getRegisterName(reg)).lower()
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<< ", #scratch\n";
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}
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SparcTargetELFStreamer::SparcTargetELFStreamer(MCStreamer &S,
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const MCSubtargetInfo &STI)
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: SparcTargetStreamer(S) {
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ELFObjectWriter &W = getStreamer().getWriter();
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unsigned EFlags = W.getELFHeaderEFlags();
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EFlags |= getEFlagsForFeatureSet(STI);
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W.setELFHeaderEFlags(EFlags);
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}
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MCELFStreamer &SparcTargetELFStreamer::getStreamer() {
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return static_cast<MCELFStreamer &>(Streamer);
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}
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