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//===-- XtensaMCObjectWriter.cpp - Xtensa ELF writer ----------------------===//
//
// The LLVM Compiler Infrastructure
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "MCTargetDesc/XtensaMCTargetDesc.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCFixup.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
#include <cassert>
#include <cstdint>
using namespace llvm;
namespace {
class XtensaObjectWriter : public MCELFObjectTargetWriter {
public:
XtensaObjectWriter(uint8_t OSABI);
virtual ~XtensaObjectWriter();
protected:
unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
const MCFixup &Fixup, bool IsPCRel) const override;
bool needsRelocateWithSymbol(const MCValue &Val, const MCSymbol &Sym,
unsigned Type) const override;
};
} // namespace
XtensaObjectWriter::XtensaObjectWriter(uint8_t OSABI)
: MCELFObjectTargetWriter(false, OSABI, ELF::EM_XTENSA,
/*HasRelocationAddend=*/true) {}
XtensaObjectWriter::~XtensaObjectWriter() {}
unsigned XtensaObjectWriter::getRelocType(MCContext &Ctx, const MCValue &Target,
const MCFixup &Fixup,
bool IsPCRel) const {
switch ((unsigned)Fixup.getKind()) {
case FK_Data_4:
return ELF::R_XTENSA_32;
default:
return ELF::R_XTENSA_SLOT0_OP;
}
}
std::unique_ptr<MCObjectTargetWriter>
llvm::createXtensaObjectWriter(uint8_t OSABI, bool IsLittleEndian) {
return std::make_unique<XtensaObjectWriter>(OSABI);
}
bool XtensaObjectWriter::needsRelocateWithSymbol(const MCValue &,
const MCSymbol &,
unsigned Type) const {
return false;
}
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