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//===- lib/ReaderWriter/ELF/AArch64/AArch64LinkingContext.h ---------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLD_READER_WRITER_ELF_AARCH64_AARCH64_LINKING_CONTEXT_H
#define LLD_READER_WRITER_ELF_AARCH64_AARCH64_LINKING_CONTEXT_H
#include "lld/ReaderWriter/ELFLinkingContext.h"
#include "llvm/Object/ELF.h"
#include "llvm/Support/ELF.h"
namespace lld {
namespace elf {
enum {
/// \brief The offset to add operation for a R_AARCH64_ADR_GOT_PAGE
ADD_AARCH64_GOTRELINDEX = 0xE000,
};
class AArch64LinkingContext final : public ELFLinkingContext {
public:
int getMachineType() const override { return llvm::ELF::EM_AARCH64; }
AArch64LinkingContext(llvm::Triple);
void addPasses(PassManager &) override;
void registerRelocationNames(Registry &r) override;
uint64_t getBaseAddress() const override {
if (_baseAddress == 0)
return 0x400000;
return _baseAddress;
}
bool isDynamicRelocation(const Reference &r) const override {
if (r.kindNamespace() != Reference::KindNamespace::ELF)
return false;
assert(r.kindArch() == Reference::KindArch::AArch64);
switch (r.kindValue()) {
case llvm::ELF::R_AARCH64_COPY:
case llvm::ELF::R_AARCH64_GLOB_DAT:
case llvm::ELF::R_AARCH64_RELATIVE:
case llvm::ELF::R_AARCH64_TLS_DTPREL64:
case llvm::ELF::R_AARCH64_TLS_DTPMOD64:
case llvm::ELF::R_AARCH64_TLS_TPREL64:
case llvm::ELF::R_AARCH64_TLSDESC:
case llvm::ELF::R_AARCH64_IRELATIVE:
return true;
default:
return false;
}
}
bool isCopyRelocation(const Reference &r) const override {
if (r.kindNamespace() != Reference::KindNamespace::ELF)
return false;
assert(r.kindArch() == Reference::KindArch::AArch64);
if (r.kindValue() == llvm::ELF::R_AARCH64_COPY)
return true;
return false;
}
bool isPLTRelocation(const Reference &r) const override {
if (r.kindNamespace() != Reference::KindNamespace::ELF)
return false;
assert(r.kindArch() == Reference::KindArch::AArch64);
switch (r.kindValue()) {
case llvm::ELF::R_AARCH64_JUMP_SLOT:
case llvm::ELF::R_AARCH64_IRELATIVE:
return true;
default:
return false;
}
}
bool isRelativeReloc(const Reference &r) const override {
if (r.kindNamespace() != Reference::KindNamespace::ELF)
return false;
assert(r.kindArch() == Reference::KindArch::AArch64);
switch (r.kindValue()) {
case llvm::ELF::R_AARCH64_IRELATIVE:
case llvm::ELF::R_AARCH64_RELATIVE:
return true;
default:
return false;
}
}
/// \brief The path to the dynamic interpreter
StringRef getDefaultInterpreter() const override {
return "/lib/ld-linux-aarch64.so.1";
}
};
} // end namespace elf
} // end namespace lld
#endif
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