llvm/lld/ELF/Arch/Mips.cpp

//===- MIPS.cpp -----------------------------------------------------------===//
//
// 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 "InputFiles.h"
#include "OutputSections.h"
#include "Symbols.h"
#include "SyntheticSections.h"
#include "Target.h"
#include "lld/Common/ErrorHandler.h"
#include "llvm/BinaryFormat/ELF.h"

usingnamespacellvm;
usingnamespacellvm::object;
usingnamespacellvm::ELF;
usingnamespacelld;
usingnamespacelld::elf;

namespace {
template <class ELFT> class MIPS final : public TargetInfo { … };
} // namespace

template <class ELFT> MIPS<ELFT>::MIPS(Ctx &ctx) : … { … }

template <class ELFT> uint32_t MIPS<ELFT>::calcEFlags() const { … }

template <class ELFT>
RelExpr MIPS<ELFT>::getRelExpr(RelType type, const Symbol &s,
                               const uint8_t *loc) const { … }

template <class ELFT> RelType MIPS<ELFT>::getDynRel(RelType type) const { … }

template <class ELFT>
void MIPS<ELFT>::writeGotPlt(uint8_t *buf, const Symbol &) const { … }

template <endianness E> static uint32_t readShuffle(const uint8_t *loc) { … }

static void writeValue(uint8_t *loc, uint64_t v, uint8_t bitsSize,
                       uint8_t shift) { … }

template <endianness E>
static void writeShuffleValue(uint8_t *loc, uint64_t v, uint8_t bitsSize,
                              uint8_t shift) { … }

template <endianness E>
static void writeMicroRelocation16(uint8_t *loc, uint64_t v, uint8_t bitsSize,
                                   uint8_t shift) { … }

template <class ELFT> void MIPS<ELFT>::writePltHeader(uint8_t *buf) const { … }

template <class ELFT>
void MIPS<ELFT>::writePlt(uint8_t *buf, const Symbol &sym,
                          uint64_t pltEntryAddr) const { … }

template <class ELFT>
bool MIPS<ELFT>::needsThunk(RelExpr expr, RelType type, const InputFile *file,
                            uint64_t branchAddr, const Symbol &s,
                            int64_t /*a*/) const { … }

template <class ELFT>
int64_t MIPS<ELFT>::getImplicitAddend(const uint8_t *buf, RelType type) const { … }

static std::pair<uint32_t, uint64_t>
calculateMipsRelChain(uint8_t *loc, RelType type, uint64_t val) { … }

static bool isBranchReloc(RelType type) { … }

static bool isMicroBranchReloc(RelType type) { … }

template <class ELFT>
static uint64_t fixupCrossModeJump(uint8_t *loc, RelType type, uint64_t val) { … }

template <class ELFT>
void MIPS<ELFT>::relocate(uint8_t *loc, const Relocation &rel,
                          uint64_t val) const { … }

template <class ELFT> bool MIPS<ELFT>::usesOnlyLowPageBits(RelType type) const { … }

// Return true if the symbol is a PIC function.
template <class ELFT> bool elf::isMipsPIC(const Defined *sym) { … }

TargetInfo *elf::getMipsTargetInfo(Ctx &ctx) { … }

template bool elf::isMipsPIC<ELF32LE>(const Defined *);
template bool elf::isMipsPIC<ELF32BE>(const Defined *);
template bool elf::isMipsPIC<ELF64LE>(const Defined *);
template bool elf::isMipsPIC<ELF64BE>(const Defined *);