llvm-project/lld/ELF/Relocations.h

97 lines
1.9 KiB
C++

//===- Relocations.h -------------------------------------------*- C++ -*-===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLD_ELF_RELOCATIONS_H
#define LLD_ELF_RELOCATIONS_H
#include "lld/Core/LLVM.h"
namespace lld {
namespace elf {
class SymbolBody;
class InputSectionData;
template <class ELFT> class InputSection;
template <class ELFT> class InputSectionBase;
enum RelExpr {
R_ABS,
R_GOT,
R_GOTONLY_PC,
R_GOTONLY_PC_FROM_END,
R_GOTREL,
R_GOTREL_FROM_END,
R_GOT_FROM_END,
R_GOT_OFF,
R_GOT_PAGE_PC,
R_GOT_PC,
R_HINT,
R_MIPS_GOT_LOCAL_PAGE,
R_MIPS_GOT_OFF,
R_MIPS_TLSGD,
R_MIPS_TLSLD,
R_NEG_TLS,
R_PAGE_PC,
R_PC,
R_PLT,
R_PLT_PC,
R_PLT_PAGE_PC,
R_PPC_OPD,
R_PPC_PLT_OPD,
R_PPC_TOC,
R_RELAX_GOT_PC,
R_RELAX_GOT_PC_NOPIC,
R_RELAX_TLS_GD_TO_IE,
R_RELAX_TLS_GD_TO_IE_END,
R_RELAX_TLS_GD_TO_IE_ABS,
R_RELAX_TLS_GD_TO_IE_PAGE_PC,
R_RELAX_TLS_GD_TO_LE,
R_RELAX_TLS_GD_TO_LE_NEG,
R_RELAX_TLS_IE_TO_LE,
R_RELAX_TLS_LD_TO_LE,
R_SIZE,
R_THUNK_ABS,
R_THUNK_PC,
R_THUNK_PLT_PC,
R_TLS,
R_TLSDESC,
R_TLSDESC_PAGE,
R_TLSGD,
R_TLSGD_PC,
R_TLSLD,
R_TLSLD_PC
};
struct Relocation {
RelExpr Expr;
uint32_t Type;
uint64_t Offset;
uint64_t Addend;
SymbolBody *Sym;
};
template <class ELFT>
void scanRelocations(InputSectionBase<ELFT> &, const typename ELFT::Shdr &);
template <class ELFT>
void createThunks(InputSectionBase<ELFT> &, const typename ELFT::Shdr &);
template <class ELFT>
static inline typename ELFT::uint getAddend(const typename ELFT::Rel &Rel) {
return 0;
}
template <class ELFT>
static inline typename ELFT::uint getAddend(const typename ELFT::Rela &Rel) {
return Rel.r_addend;
}
}
}
#endif