diff options
Diffstat (limited to 'include/atomic.h')
| -rw-r--r-- | include/atomic.h | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/include/atomic.h b/include/atomic.h index 3680d8714..267aff5d5 100644 --- a/include/atomic.h +++ b/include/atomic.h @@ -542,24 +542,18 @@ ({ __typeof (x) __x; __asm__ ("" : "=r" (__x) : "0" (x)); __x; }) #endif -/* This is equal to 1 iff the architecture supports 64b atomic operations. */ -#define __HAVE_64B_ATOMICS 0 /* TODO: not yet used - Add these to arch bits! */ -#ifndef __HAVE_64B_ATOMICS -#error Unable to determine if 64-bit atomics are present. -#endif - /* The following functions are a subset of the atomic operations provided by C11. Usually, a function named atomic_OP_MO(args) is equivalent to C11's atomic_OP_explicit(args, memory_order_MO); exceptions noted below. */ /* Each arch can request to use compiler built-ins for C11 atomics. If it does, all atomics will be based on these. */ -#if 0 /* not yet used USE_ATOMIC_COMPILER_BUILTINS */ +#if defined USE_ATOMIC_COMPILER_BUILTINS /* We require 32b atomic operations; some archs also support 64b atomic operations. */ void __atomic_link_error (void); -# if __HAVE_64B_ATOMICS == 1 +# if defined(__HAVE_64B_ATOMICS) && __HAVE_64B_ATOMICS # define __atomic_check_size(mem) \ if ((sizeof (*mem) != 4) && (sizeof (*mem) != 8)) \ __atomic_link_error (); |