diff options
Diffstat (limited to 'sysdeps/ia64/bits')
| -rw-r--r-- | sysdeps/ia64/bits/atomic.h | 71 |
1 files changed, 45 insertions, 26 deletions
diff --git a/sysdeps/ia64/bits/atomic.h b/sysdeps/ia64/bits/atomic.h index 27789c0a2e..68d79fa9ec 100644 --- a/sysdeps/ia64/bits/atomic.h +++ b/sysdeps/ia64/bits/atomic.h @@ -78,30 +78,49 @@ typedef uintmax_t uatomic_max_t; __sync_lock_test_and_set_si (mem, value) #define atomic_exchange_and_add(mem, value) \ - ({ \ - __typeof (*mem) __oldval, __val; \ - __typeof (mem) __memp = (mem); \ - __typeof (*mem) __value = (value); \ + ({ __typeof (*mem) __oldval, __val; \ + __typeof (mem) __memp = (mem); \ + __typeof (*mem) __value = (value); \ \ - __val = *__memp; \ - if (sizeof (*mem) == 4) \ - do \ - { \ - __oldval = __val; \ - __val = __arch_compare_and_exchange_32_val_acq (__memp, \ - __oldval + __value, \ - __oldval); \ - } \ - while (__builtin_expect (__val != __oldval, 0)); \ - else if (sizeof (*mem) == 8) \ - do \ - { \ - __oldval = __val; \ - __val = __arch_compare_and_exchange_64_val_acq (__memp, \ - __oldval + __value, \ - __oldval); \ - } \ - while (__builtin_expect (__val != __oldval, 0)); \ - else \ - abort (); \ - __oldval + __value; }) + __val = (*__memp); \ + do \ + { \ + __oldval = __val; \ + __val = atomic_compare_and_exchange_val_acq (__memp, \ + __oldval + __value, \ + __oldval); \ + } \ + while (__builtin_expect (__val != __oldval, 0)); \ + __oldval; }) + +#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; }) |