/* Resolve function pointers to VDSO functions.
   Copyright (C) 2010-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.

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


#ifndef _M68K_VDSO_H
#define _M68K_VDSO_H

#ifdef SHARED

# if IS_IN (rtld)
# define M68K_VDSO_SYMBOL(name) __rtld_##name
# define STR_M68K_VDSO_SYMBOL(name) "__rtld_" #name
# else
# define M68K_VDSO_SYMBOL(name) name
# define STR_M68K_VDSO_SYMBOL(name) #name
# endif

# ifndef __ASSEMBLER__

/* We define __rtld_* copies for rtld.
   We need them visible in libc to initialize.  */
#  if IS_IN (rtld) || IS_IN (libc)
extern void *__rtld___vdso_read_tp;
extern void *__rtld___vdso_atomic_cmpxchg_32;
extern void *__rtld___vdso_atomic_barrier;

/* These stubs are meant to be invoked only from the assembly.  */
extern void __vdso_read_tp_stub (void);
extern void __vdso_atomic_cmpxchg_32_stub (void);
extern void __vdso_atomic_barrier_stub (void);
#  endif /* IS_IN (rtld) || IS_IN (libc) */

/* RTLD should only use its own copies.  */
#  if !IS_IN (rtld)
extern void *__vdso_read_tp;
extern void *__vdso_atomic_cmpxchg_32;
extern void *__vdso_atomic_barrier;
#  endif /* !IS_IN (rtld) */

# endif /* !__ASSEMBLER__ */

#endif /* SHARED */

#endif /* _M68K_VDSO_H */
