3dc09fbf29
Implment base support of the TLS functionality using Xtensa THREADPTR Option. Implement basic functionality of the DFPAccel Option(registers support).
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//===-- XtensaMCObjectWriter.cpp - Xtensa ELF writer ----------------------===//
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//
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// The LLVM Compiler Infrastructure
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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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#include "MCTargetDesc/XtensaMCExpr.h"
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#include "MCTargetDesc/XtensaMCTargetDesc.h"
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#include "llvm/ADT/STLExtras.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/MCExpr.h"
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#include "llvm/MC/MCFixup.h"
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#include "llvm/MC/MCObjectWriter.h"
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#include "llvm/MC/MCValue.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <cassert>
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#include <cstdint>
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using namespace llvm;
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namespace {
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class XtensaObjectWriter : public MCELFObjectTargetWriter {
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public:
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XtensaObjectWriter(uint8_t OSABI);
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virtual ~XtensaObjectWriter();
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protected:
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unsigned getRelocType(const MCFixup &, const MCValue &,
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bool IsPCRel) const override;
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bool needsRelocateWithSymbol(const MCValue &, unsigned Type) const override;
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};
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} // namespace
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XtensaObjectWriter::XtensaObjectWriter(uint8_t OSABI)
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: MCELFObjectTargetWriter(false, OSABI, ELF::EM_XTENSA,
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/*HasRelocationAddend=*/true) {}
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XtensaObjectWriter::~XtensaObjectWriter() {}
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unsigned XtensaObjectWriter::getRelocType(const MCFixup &Fixup,
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const MCValue &Target,
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bool IsPCRel) const {
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uint8_t Specifier = Target.getSpecifier();
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switch ((unsigned)Fixup.getKind()) {
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case FK_Data_4:
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return Specifier == Xtensa::S_TPOFF ? ELF::R_XTENSA_TLS_TPOFF
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: ELF::R_XTENSA_32;
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default:
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return ELF::R_XTENSA_SLOT0_OP;
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}
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}
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std::unique_ptr<MCObjectTargetWriter>
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llvm::createXtensaObjectWriter(uint8_t OSABI, bool IsLittleEndian) {
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return std::make_unique<XtensaObjectWriter>(OSABI);
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}
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bool XtensaObjectWriter::needsRelocateWithSymbol(const MCValue &,
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unsigned Type) const {
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return false;
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}
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