llvm/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZELFObjectWriter.cpp

//===-- SystemZELFObjectWriter.cpp - SystemZ ELF writer -------------------===//
//
// 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/SystemZMCFixups.h"
#include "MCTargetDesc/SystemZMCTargetDesc.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/MC/MCContext.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>
#include <memory>

usingnamespacellvm;

namespace {

class SystemZELFObjectWriter : public MCELFObjectTargetWriter { … };

} // end anonymous namespace

SystemZELFObjectWriter::SystemZELFObjectWriter(uint8_t OSABI)
    : … { … }

// Return the relocation type for an absolute value of MCFixupKind Kind.
static unsigned getAbsoluteReloc(MCContext &Ctx, SMLoc Loc, unsigned Kind) { … }

// Return the relocation type for a PC-relative value of MCFixupKind Kind.
static unsigned getPCRelReloc(MCContext &Ctx, SMLoc Loc, unsigned Kind) { … }

// Return the R_390_TLS_LE* relocation type for MCFixupKind Kind.
static unsigned getTLSLEReloc(MCContext &Ctx, SMLoc Loc, unsigned Kind) { … }

// Return the R_390_TLS_LDO* relocation type for MCFixupKind Kind.
static unsigned getTLSLDOReloc(MCContext &Ctx, SMLoc Loc, unsigned Kind) { … }

// Return the R_390_TLS_LDM* relocation type for MCFixupKind Kind.
static unsigned getTLSLDMReloc(MCContext &Ctx, SMLoc Loc, unsigned Kind) { … }

// Return the R_390_TLS_GD* relocation type for MCFixupKind Kind.
static unsigned getTLSGDReloc(MCContext &Ctx, SMLoc Loc, unsigned Kind) { … }

// Return the PLT relocation counterpart of MCFixupKind Kind.
static unsigned getPLTReloc(MCContext &Ctx, SMLoc Loc, unsigned Kind) { … }

unsigned SystemZELFObjectWriter::getRelocType(MCContext &Ctx,
                                              const MCValue &Target,
                                              const MCFixup &Fixup,
                                              bool IsPCRel) const { … }

std::unique_ptr<MCObjectTargetWriter>
llvm::createSystemZELFObjectWriter(uint8_t OSABI) { … }