/* MIPS-specific handling of undefined symbols.

   Copyright (C) 2008-2020 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <https://www.gnu.org/licenses/>.  */

#ifndef _ELF_MACHINE_SYM_NO_MATCH_H

#define _ELF_MACHINE_SYM_NO_MATCH_H

#include <link.h>

#include <stdbool.h>

/* The semantics of zero/non-zero values of undefined symbols differs

   depending on whether the non-PIC ABI is in use.  Under the non-PIC

   ABI, a non-zero value indicates that there is an address reference

   to the symbol and thus it must always be resolved (except when

   resolving a jump slot relocation) to the PLT entry whose address is

   provided as the symbol's value; a zero value indicates that this

   canonical-address behaviour is not required.  Yet under the classic

   MIPS psABI, a zero value indicates that there is an address

   reference to the function and the dynamic linker must resolve the

   symbol immediately upon loading.  To avoid conflict, symbols for

   which the dynamic linker must assume the non-PIC ABI semantics are

   marked with the STO_MIPS_PLT flag.  */

static inline bool

elf_machine_sym_no_match (const ElfW(Sym) *sym)

{

  return sym->st_shndx == SHN_UNDEF && !(sym->st_other & STO_MIPS_PLT);

}

#endif /* _ELF_MACHINE_SYM_NO_MATCH_H */