sysdeps/csky/atomic-machine.h

   1 /* Atomic operations.  C-SKY version.
   2    Copyright (C) 2018-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef __CSKY_ATOMIC_H_
  20 #define __CSKY_ATOMIC_H_
  21
  22 #include <stdint.h>
  23
  24 typedef int32_t atomic32_t;
  25 typedef uint32_t uatomic32_t;
  26
  27 typedef intptr_t atomicptr_t;
  28 typedef uintptr_t uatomicptr_t;
  29 typedef intmax_t atomic_max_t;
  30 typedef uintmax_t uatomic_max_t;
  31
  32 #define __HAVE_64B_ATOMICS 0
  33 #define USE_ATOMIC_COMPILER_BUILTINS 1
  34 #define ATOMIC_EXCHANGE_USES_CAS 1
  35
  36 #define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval, model) \
  37   (abort (), 0)
  38
  39 #define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval, model) \
  40   (abort (), 0)
  41
  42 #define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval, model) \
  43   ({                                                                    \
  44     typeof (*mem) __oldval = (oldval);                                  \
  45     !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,   \
  46                                   model, __ATOMIC_RELAXED);             \
  47   })
  48
  49 #define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval, model) \
  50   (abort (), 0)
  51
  52 #define __arch_compare_and_exchange_val_8_int(mem, newval, oldval, model) \
  53   (abort (), (__typeof (*mem)) 0)
  54
  55 #define __arch_compare_and_exchange_val_16_int(mem, newval, oldval, model) \
  56   (abort (), (__typeof (*mem)) 0)
  57
  58 #define __arch_compare_and_exchange_val_32_int(mem, newval, oldval, model) \
  59   ({                                                                    \
  60     typeof (*mem) __oldval = (oldval);                                  \
  61     __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,    \
  62                                  model, __ATOMIC_RELAXED);              \
  63     __oldval;                                                           \
  64   })
  65
  66 #define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) \
  67   (abort (), (__typeof (*mem)) 0)
  68
  69 #define atomic_compare_and_exchange_bool_acq(mem, new, old)             \
  70   __atomic_bool_bysize (__arch_compare_and_exchange_bool, int,          \
  71                         mem, new, old, __ATOMIC_ACQUIRE)
  72
  73 #define atomic_compare_and_exchange_val_acq(mem, new, old)              \
  74   __atomic_val_bysize (__arch_compare_and_exchange_val, int,            \
  75                        mem, new, old, __ATOMIC_ACQUIRE)
  76
  77 #endif /* atomic-machine.h */