| /* Copyright (C) 2003-2018 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdint.h> |
| #include <ia64intrin.h> |
| |
| typedef int8_t atomic8_t; |
| typedef uint8_t uatomic8_t; |
| typedef int_fast8_t atomic_fast8_t; |
| typedef uint_fast8_t uatomic_fast8_t; |
| |
| typedef int16_t atomic16_t; |
| typedef uint16_t uatomic16_t; |
| typedef int_fast16_t atomic_fast16_t; |
| typedef uint_fast16_t uatomic_fast16_t; |
| |
| typedef int32_t atomic32_t; |
| typedef uint32_t uatomic32_t; |
| typedef int_fast32_t atomic_fast32_t; |
| typedef uint_fast32_t uatomic_fast32_t; |
| |
| typedef int64_t atomic64_t; |
| typedef uint64_t uatomic64_t; |
| typedef int_fast64_t atomic_fast64_t; |
| typedef uint_fast64_t uatomic_fast64_t; |
| |
| typedef intptr_t atomicptr_t; |
| typedef uintptr_t uatomicptr_t; |
| typedef intmax_t atomic_max_t; |
| typedef uintmax_t uatomic_max_t; |
| |
| #define __HAVE_64B_ATOMICS 1 |
| #define USE_ATOMIC_COMPILER_BUILTINS 0 |
| |
| /* XXX Is this actually correct? */ |
| #define ATOMIC_EXCHANGE_USES_CAS 0 |
| |
| |
| #define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \ |
| (abort (), 0) |
| |
| #define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \ |
| (abort (), 0) |
| |
| #define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \ |
| (!__sync_bool_compare_and_swap ((mem), (int) (long) (oldval), \ |
| (int) (long) (newval))) |
| |
| #define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval) \ |
| (!__sync_bool_compare_and_swap ((mem), (long) (oldval), \ |
| (long) (newval))) |
| |
| #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ |
| (abort (), (__typeof (*mem)) 0) |
| |
| #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ |
| (abort (), (__typeof (*mem)) 0) |
| |
| #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ |
| __sync_val_compare_and_swap ((mem), (int) (long) (oldval), \ |
| (int) (long) (newval)) |
| |
| #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ |
| __sync_val_compare_and_swap ((mem), (long) (oldval), (long) (newval)) |
| |
| /* Atomically store newval and return the old value. */ |
| #define atomic_exchange_acq(mem, value) \ |
| __sync_lock_test_and_set (mem, value) |
| |
| #define atomic_exchange_rel(mem, value) \ |
| (__sync_synchronize (), __sync_lock_test_and_set (mem, value)) |
| |
| #define atomic_exchange_and_add(mem, value) \ |
| __sync_fetch_and_add ((mem), (value)) |
| |
| #define atomic_decrement_if_positive(mem) \ |
| ({ __typeof (*mem) __oldval, __val; \ |
| __typeof (mem) __memp = (mem); \ |
| \ |
| __val = (*__memp); \ |
| do \ |
| { \ |
| __oldval = __val; \ |
| if (__builtin_expect (__val <= 0, 0)) \ |
| break; \ |
| __val = atomic_compare_and_exchange_val_acq (__memp, __oldval - 1, \ |
| __oldval); \ |
| } \ |
| while (__builtin_expect (__val != __oldval, 0)); \ |
| __oldval; }) |
| |
| #define atomic_bit_test_set(mem, bit) \ |
| ({ __typeof (*mem) __oldval, __val; \ |
| __typeof (mem) __memp = (mem); \ |
| __typeof (*mem) __mask = ((__typeof (*mem)) 1 << (bit)); \ |
| \ |
| __val = (*__memp); \ |
| do \ |
| { \ |
| __oldval = __val; \ |
| __val = atomic_compare_and_exchange_val_acq (__memp, \ |
| __oldval | __mask, \ |
| __oldval); \ |
| } \ |
| while (__builtin_expect (__val != __oldval, 0)); \ |
| __oldval & __mask; }) |
| |
| #define atomic_full_barrier() __sync_synchronize () |