atomic.h

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/*****************************************************************************/
/*
 * (c) 2000-2009 Author(s)
 *     economic rights: Technische Universität Dresden (Germany)
 * This file is part of TUD:OS and distributed under the terms of the
 * GNU Lesser General Public License 2.1.
 * Please see the COPYING-LGPL-2.1 file for details.
 */
 
/*****************************************************************************/
#ifndef __L4UTIL__INCLUDE__ATOMIC_H__
#define __L4UTIL__INCLUDE__ATOMIC_H__
 
#include <l4/sys/l4int.h>
#include <l4/sys/compiler.h>
 
/*****************************************************************************
 *** Prototypes
 *****************************************************************************/
 
EXTERN_C_BEGIN
 
#if __SIZEOF_LONG__ == 8
 
L4_INLINE int
l4util_cmpxchg64(volatile l4_uint64_t * dest,
                 l4_uint64_t cmp_val, l4_uint64_t new_val);
 
#endif
 
L4_INLINE int
l4util_cmpxchg32(volatile l4_uint32_t * dest,
                 l4_uint32_t cmp_val, l4_uint32_t new_val);
 
L4_INLINE int
l4util_cmpxchg16(volatile l4_uint16_t * dest,
                 l4_uint16_t cmp_val, l4_uint16_t new_val);
 
L4_INLINE int
l4util_cmpxchg8(volatile l4_uint8_t * dest,
                l4_uint8_t cmp_val, l4_uint8_t new_val);
 
L4_INLINE int
l4util_cmpxchg(volatile l4_umword_t * dest,
               l4_umword_t cmp_val, l4_umword_t new_val);
 
L4_INLINE l4_uint32_t
l4util_xchg32(volatile l4_uint32_t * dest, l4_uint32_t val);
 
L4_INLINE l4_uint16_t
l4util_xchg16(volatile l4_uint16_t * dest, l4_uint16_t val);
 
L4_INLINE l4_uint8_t
l4util_xchg8(volatile l4_uint8_t * dest, l4_uint8_t val);
 
L4_INLINE l4_umword_t
l4util_xchg(volatile l4_umword_t * dest, l4_umword_t val);
 
 
L4_INLINE void
l4util_add8(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE void
l4util_add16(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE void
l4util_add32(volatile l4_uint32_t *dest, l4_uint32_t val);
L4_INLINE void
l4util_sub8(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE void
l4util_sub16(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE void
l4util_sub32(volatile l4_uint32_t *dest, l4_uint32_t val);
L4_INLINE void
l4util_and8(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE void
l4util_and16(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE void
l4util_and32(volatile l4_uint32_t *dest, l4_uint32_t val);
L4_INLINE void
l4util_or8(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE void
l4util_or16(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE void
l4util_or32(volatile l4_uint32_t *dest, l4_uint32_t val);
 
 
L4_INLINE l4_uint8_t
l4util_add8_res(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE l4_uint16_t
l4util_add16_res(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE l4_uint32_t
l4util_add32_res(volatile l4_uint32_t *dest, l4_uint32_t val);
L4_INLINE l4_uint8_t
l4util_sub8_res(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE l4_uint16_t
l4util_sub16_res(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE l4_uint32_t
l4util_sub32_res(volatile l4_uint32_t *dest, l4_uint32_t val);
L4_INLINE l4_uint8_t
l4util_and8_res(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE l4_uint16_t
l4util_and16_res(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE l4_uint32_t
l4util_and32_res(volatile l4_uint32_t *dest, l4_uint32_t val);
L4_INLINE l4_uint8_t
l4util_or8_res(volatile l4_uint8_t *dest, l4_uint8_t val);
L4_INLINE l4_uint16_t
l4util_or16_res(volatile l4_uint16_t *dest, l4_uint16_t val);
L4_INLINE l4_uint32_t
l4util_or32_res(volatile l4_uint32_t *dest, l4_uint32_t val);
 
 
L4_INLINE void
l4util_inc8(volatile l4_uint8_t *dest);
L4_INLINE void
l4util_inc16(volatile l4_uint16_t *dest);
L4_INLINE void
l4util_inc32(volatile l4_uint32_t *dest);
L4_INLINE void
l4util_dec8(volatile l4_uint8_t *dest);
L4_INLINE void
l4util_dec16(volatile l4_uint16_t *dest);
L4_INLINE void
l4util_dec32(volatile l4_uint32_t *dest);
 
 
L4_INLINE l4_uint8_t
l4util_inc8_res(volatile l4_uint8_t *dest);
L4_INLINE l4_uint16_t
l4util_inc16_res(volatile l4_uint16_t *dest);
L4_INLINE l4_uint32_t
l4util_inc32_res(volatile l4_uint32_t *dest);
L4_INLINE l4_uint8_t
l4util_dec8_res(volatile l4_uint8_t *dest);
L4_INLINE l4_uint16_t
l4util_dec16_res(volatile l4_uint16_t *dest);
L4_INLINE l4_uint32_t
l4util_dec32_res(volatile l4_uint32_t *dest);
 
L4_INLINE void
l4util_atomic_add(volatile long *dest, long val);
 
L4_INLINE void
l4util_atomic_inc(volatile long *dest);
 
EXTERN_C_END
 
/*****************
 * IMPLEMENTAION *
 *****************/
 
#if __SIZEOF_LONG__ == 8
 
L4_INLINE int
l4util_cmpxchg64(volatile l4_uint64_t * dest,
                 l4_uint64_t cmp_val, l4_uint64_t new_val)
{
  return __atomic_compare_exchange_n(dest, &cmp_val, new_val, 0,
                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
}
 
#endif
 
L4_INLINE int
l4util_cmpxchg32(volatile l4_uint32_t * dest,
                 l4_uint32_t cmp_val, l4_uint32_t new_val)
{
  return __atomic_compare_exchange_n(dest, &cmp_val, new_val, 0,
                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
}
 
L4_INLINE int
l4util_cmpxchg16(volatile l4_uint16_t * dest,
                 l4_uint16_t cmp_val, l4_uint16_t new_val)
{
  return __atomic_compare_exchange_n(dest, &cmp_val, new_val, 0,
                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
}
 
L4_INLINE int
l4util_cmpxchg8(volatile l4_uint8_t * dest,
                l4_uint8_t cmp_val, l4_uint8_t new_val)
{
  return __atomic_compare_exchange_n(dest, &cmp_val, new_val, 0,
                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
}
 
L4_INLINE int
l4util_cmpxchg(volatile l4_umword_t * dest,
               l4_umword_t cmp_val, l4_umword_t new_val)
{
  return __atomic_compare_exchange_n(dest, &cmp_val, new_val, 0,
                                     __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
}
 
L4_INLINE l4_uint32_t
l4util_xchg32(volatile l4_uint32_t * dest, l4_uint32_t val)
{
  return __atomic_exchange_n(dest, val, __ATOMIC_SEQ_CST);
}
 
L4_INLINE l4_uint16_t
l4util_xchg16(volatile l4_uint16_t * dest, l4_uint16_t val)
{
  return __atomic_exchange_n(dest, val, __ATOMIC_SEQ_CST);
}
 
L4_INLINE l4_uint8_t
l4util_xchg8(volatile l4_uint8_t * dest, l4_uint8_t val)
{
  return __atomic_exchange_n(dest, val, __ATOMIC_SEQ_CST);
}
 
L4_INLINE l4_umword_t
l4util_xchg(volatile l4_umword_t * dest, l4_umword_t val)
{
  return __atomic_exchange_n(dest, val, __ATOMIC_SEQ_CST);
}
 
L4_INLINE void
l4util_inc8(volatile l4_uint8_t *dest)
{ __atomic_fetch_add(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_inc16(volatile l4_uint16_t *dest)
{ __atomic_fetch_add(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_inc32(volatile l4_uint32_t *dest)
{ __atomic_fetch_add(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_atomic_inc(volatile long *dest)
{ __atomic_fetch_add(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_dec8(volatile l4_uint8_t *dest)
{ __atomic_fetch_sub(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_dec16(volatile l4_uint16_t *dest)
{ __atomic_fetch_sub(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_dec32(volatile l4_uint32_t *dest)
{ __atomic_fetch_sub(dest, 1, __ATOMIC_SEQ_CST); }
 
 
L4_INLINE l4_uint8_t
l4util_inc8_res(volatile l4_uint8_t *dest)
{ return __atomic_add_fetch(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint16_t
l4util_inc16_res(volatile l4_uint16_t *dest)
{ return __atomic_add_fetch(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint32_t
l4util_inc32_res(volatile l4_uint32_t *dest)
{ return __atomic_add_fetch(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint8_t
l4util_dec8_res(volatile l4_uint8_t *dest)
{ return __atomic_sub_fetch(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint16_t
l4util_dec16_res(volatile l4_uint16_t *dest)
{ return __atomic_sub_fetch(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint32_t
l4util_dec32_res(volatile l4_uint32_t *dest)
{ return __atomic_sub_fetch(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_umword_t
l4util_dec_res(volatile l4_umword_t *dest)
{ return __atomic_sub_fetch(dest, 1, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_add8(volatile l4_uint8_t *dest, l4_uint8_t val)
{ __atomic_fetch_add(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_add16(volatile l4_uint16_t *dest, l4_uint16_t val)
{ __atomic_fetch_add(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_add32(volatile l4_uint32_t *dest, l4_uint32_t val)
{ __atomic_fetch_add(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_atomic_add(volatile long *dest, long val)
{ __atomic_fetch_add(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_sub8(volatile l4_uint8_t *dest, l4_uint8_t val)
{ __atomic_fetch_sub(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_sub16(volatile l4_uint16_t *dest, l4_uint16_t val)
{ __atomic_fetch_sub(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_sub32(volatile l4_uint32_t *dest, l4_uint32_t val)
{ __atomic_fetch_sub(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_and8(volatile l4_uint8_t *dest, l4_uint8_t val)
{ __atomic_fetch_and(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_and16(volatile l4_uint16_t *dest, l4_uint16_t val)
{ __atomic_fetch_and(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_and32(volatile l4_uint32_t *dest, l4_uint32_t val)
{ __atomic_fetch_and(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_or8(volatile l4_uint8_t *dest, l4_uint8_t val)
{ __atomic_fetch_or(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_or16(volatile l4_uint16_t *dest, l4_uint16_t val)
{ __atomic_fetch_or(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE void
l4util_or32(volatile l4_uint32_t *dest, l4_uint32_t val)
{ __atomic_fetch_or(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint8_t
l4util_add8_res(volatile l4_uint8_t *dest, l4_uint8_t val)
{ return __atomic_add_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint16_t
l4util_add16_res(volatile l4_uint16_t *dest, l4_uint16_t val)
{ return __atomic_add_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint32_t
l4util_add32_res(volatile l4_uint32_t *dest, l4_uint32_t val)
{ return __atomic_add_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint8_t
l4util_sub8_res(volatile l4_uint8_t *dest, l4_uint8_t val)
{ return __atomic_sub_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint16_t
l4util_sub16_res(volatile l4_uint16_t *dest, l4_uint16_t val)
{ return __atomic_sub_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint32_t
l4util_sub32_res(volatile l4_uint32_t *dest, l4_uint32_t val)
{ return __atomic_sub_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint8_t
l4util_and8_res(volatile l4_uint8_t *dest, l4_uint8_t val)
{ return __atomic_and_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint16_t
l4util_and16_res(volatile l4_uint16_t *dest, l4_uint16_t val)
{ return __atomic_and_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint32_t
l4util_and32_res(volatile l4_uint32_t *dest, l4_uint32_t val)
{ return __atomic_and_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint8_t
l4util_or8_res(volatile l4_uint8_t *dest, l4_uint8_t val)
{ return __atomic_or_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint16_t
l4util_or16_res(volatile l4_uint16_t *dest, l4_uint16_t val)
{ return __atomic_or_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
L4_INLINE l4_uint32_t
l4util_or32_res(volatile l4_uint32_t *dest, l4_uint32_t val)
{ return __atomic_or_fetch(dest, val, __ATOMIC_SEQ_CST); }
 
#endif /* ! __L4UTIL__INCLUDE__ATOMIC_H__ */