7bda84d25e
Previously, ELFReader takes three template arguments: EFLT, LinkingContextT and FileT. FileT is itself templated. So it was a bit complicated. Maybe too much. Most architectures don't actually need to be parameterized for ELFT. For example, x86 is always ELF32LE and x86-64 is ELF64LE. However, because ELFReader requires a ELFT argument, we needed to parameterize a class even if not needed. This patch removes the parameter from the class. So now we can de-templatize such classes (I didn't do that in this patch, though). This patch also removes ContextT parameter since it didn't have to be passed as a template argument. llvm-svn: 234853
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
//===- lib/ReaderWriter/ELF/Mips/MipsLinkingContext.h ---------------------===//
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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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#ifndef LLD_READER_WRITER_ELF_MIPS_MIPS_LINKING_CONTEXT_H
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#define LLD_READER_WRITER_ELF_MIPS_MIPS_LINKING_CONTEXT_H
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#include "MipsELFFlagsMerger.h"
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#include "MipsReginfo.h"
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#include "lld/ReaderWriter/ELFLinkingContext.h"
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#include <mutex>
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namespace lld {
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namespace elf {
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/// \brief Mips internal references.
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enum {
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/// \brief Do nothing but mark GOT entry as a global one.
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LLD_R_MIPS_GLOBAL_GOT = 1024,
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/// \brief Apply high 16 bits of symbol + addend.
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LLD_R_MIPS_32_HI16 = 1025,
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/// \brief The same as R_MIPS_26 but for global symbols.
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LLD_R_MIPS_GLOBAL_26 = 1026,
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/// \brief Setup hi 16 bits using the symbol this reference refers to.
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LLD_R_MIPS_HI16 = 1027,
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/// \brief Setup low 16 bits using the symbol this reference refers to.
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LLD_R_MIPS_LO16 = 1028,
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/// \brief Represents a reference between PLT and dynamic symbol.
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LLD_R_MIPS_STO_PLT = 1029,
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/// \brief The same as R_MICROMIPS_26_S1 but for global symbols.
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LLD_R_MICROMIPS_GLOBAL_26_S1 = 1030,
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/// \brief Apply high 32+16 bits of symbol + addend.
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LLD_R_MIPS_64_HI16 = 1031,
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};
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class MipsLinkingContext final : public ELFLinkingContext {
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public:
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int getMachineType() const override { return llvm::ELF::EM_MIPS; }
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MipsLinkingContext(llvm::Triple triple);
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std::error_code mergeHeaderFlags(uint8_t fileClass, uint64_t flags) override;
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void mergeReginfoMask(const MipsReginfo &info);
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uint32_t getMergedELFFlags() const;
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const llvm::Optional<MipsReginfo> &getMergedReginfoMask() const;
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void registerRelocationNames(Registry &r) override;
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// ELFLinkingContext
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uint64_t getBaseAddress() const override;
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StringRef entrySymbolName() const override;
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StringRef getDefaultInterpreter() const override;
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void addPasses(PassManager &pm) override;
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bool isRelaOutputFormat() const override { return false; }
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bool isDynamicRelocation(const Reference &r) const override;
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bool isCopyRelocation(const Reference &r) const override;
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bool isPLTRelocation(const Reference &r) const override;
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bool isRelativeReloc(const Reference &r) const override;
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private:
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MipsELFFlagsMerger _flagsMerger;
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std::mutex _maskMutex;
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llvm::Optional<MipsReginfo> _reginfoMask;
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};
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} // elf
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} // lld
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#endif
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