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

//===-- SystemZMCAsmBackend.cpp - SystemZ assembler backend ---------------===//
//
// 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/ADT/StringSwitch.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSubtargetInfo.h"

usingnamespacellvm;

// Value is a fully-resolved relocation value: Symbol + Addend [- Pivot].
// Return the bits that should be installed in a relocation field for
// fixup kind Kind.
static uint64_t extractBitsForFixup(MCFixupKind Kind, uint64_t Value,
                                    const MCFixup &Fixup, MCContext &Ctx) { … }

namespace {
class SystemZMCAsmBackend : public MCAsmBackend { … };
} // end anonymous namespace

std::optional<MCFixupKind>
SystemZMCAsmBackend::getFixupKind(StringRef Name) const { … }

const MCFixupKindInfo &
SystemZMCAsmBackend::getFixupKindInfo(MCFixupKind Kind) const { … }

bool SystemZMCAsmBackend::shouldForceRelocation(const MCAssembler &,
                                                const MCFixup &Fixup,
                                                const MCValue &,
                                                const MCSubtargetInfo *STI) { … }

void SystemZMCAsmBackend::applyFixup(const MCAssembler &Asm,
                                     const MCFixup &Fixup,
                                     const MCValue &Target,
                                     MutableArrayRef<char> Data, uint64_t Value,
                                     bool IsResolved,
                                     const MCSubtargetInfo *STI) const { … }

bool SystemZMCAsmBackend::writeNopData(raw_ostream &OS, uint64_t Count,
                                       const MCSubtargetInfo *STI) const { … }

namespace {
class ELFSystemZAsmBackend : public SystemZMCAsmBackend { … };

class GOFFSystemZAsmBackend : public SystemZMCAsmBackend { … };
} // namespace

MCAsmBackend *llvm::createSystemZMCAsmBackend(const Target &T,
                                              const MCSubtargetInfo &STI,
                                              const MCRegisterInfo &MRI,
                                              const MCTargetOptions &Options) { … }