72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
//===- lib/ReaderWriter/ELF/Mips/MipsLinkingContext.cpp -------------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "Atoms.h"
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#include "MipsLinkingContext.h"
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#include "MipsRelocationPass.h"
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#include "MipsTargetHandler.h"
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using namespace lld;
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using namespace lld::elf;
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MipsLinkingContext::MipsLinkingContext(llvm::Triple triple)
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: ELFLinkingContext(triple, std::unique_ptr<TargetHandlerBase>(
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new MipsTargetHandler(*this))) {}
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MipsTargetLayout<Mips32ElELFType> &MipsLinkingContext::getTargetLayout() {
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auto &layout = getTargetHandler<Mips32ElELFType>().targetLayout();
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return static_cast<MipsTargetLayout<Mips32ElELFType> &>(layout);
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}
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const MipsTargetLayout<Mips32ElELFType> &
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MipsLinkingContext::getTargetLayout() const {
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auto &layout = getTargetHandler<Mips32ElELFType>().targetLayout();
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return static_cast<MipsTargetLayout<Mips32ElELFType> &>(layout);
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}
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bool MipsLinkingContext::isLittleEndian() const {
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return Mips32ElELFType::TargetEndianness == llvm::support::little;
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}
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uint64_t MipsLinkingContext::getBaseAddress() const {
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if (_baseAddress == 0 && getOutputELFType() == llvm::ELF::ET_EXEC)
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return 0x400000;
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return _baseAddress;
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}
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StringRef MipsLinkingContext::entrySymbolName() const {
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if (_outputELFType == elf::ET_EXEC && _entrySymbolName.empty())
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return "__start";
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return _entrySymbolName;
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}
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StringRef MipsLinkingContext::getDefaultInterpreter() const {
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return "/lib/ld.so.1";
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}
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void MipsLinkingContext::addPasses(PassManager &pm) {
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auto pass = createMipsRelocationPass(*this);
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if (pass)
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pm.add(std::move(pass));
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ELFLinkingContext::addPasses(pm);
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}
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bool MipsLinkingContext::isPLTRelocation(const DefinedAtom &,
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const Reference &r) const {
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if (r.kindNamespace() != Reference::KindNamespace::ELF)
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return false;
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assert(r.kindArch() == Reference::KindArch::Mips);
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switch (r.kindValue()) {
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case llvm::ELF::R_MIPS_JUMP_SLOT:
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return true;
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default:
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return false;
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}
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}
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