diff options
Diffstat (limited to 'src/atomic_ops/sysdeps/gcc/generic.h')
| -rw-r--r-- | src/atomic_ops/sysdeps/gcc/generic.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/atomic_ops/sysdeps/gcc/generic.h b/src/atomic_ops/sysdeps/gcc/generic.h index 1df2914..7bb4625 100644 --- a/src/atomic_ops/sysdeps/gcc/generic.h +++ b/src/atomic_ops/sysdeps/gcc/generic.h @@ -19,6 +19,29 @@ /* For the details, see GNU Manual, chapter 6.52 (Built-in functions */ /* for memory model aware atomic operations). */ +#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1) \ + || defined(AO_GCC_FORCE_HAVE_CAS) +# define AO_GCC_HAVE_char_SYNC_CAS +#endif + +#if (__SIZEOF_SHORT__ == 2 && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2)) \ + || defined(AO_GCC_FORCE_HAVE_CAS) +# define AO_GCC_HAVE_short_SYNC_CAS +#endif + +#if (__SIZEOF_INT__ == 4 && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)) \ + || (__SIZEOF_INT__ == 8 && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)) \ + || defined(AO_GCC_FORCE_HAVE_CAS) +# define AO_GCC_HAVE_int_SYNC_CAS +#endif + +#if (__SIZEOF_SIZE_T__ == 4 && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)) \ + || (__SIZEOF_SIZE_T__ == 8 \ + && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)) \ + || defined(AO_GCC_FORCE_HAVE_CAS) +# define AO_GCC_HAVE_SYNC_CAS +#endif + #ifdef AO_UNIPROCESSOR /* If only a single processor (core) is used, AO_UNIPROCESSOR could */ /* be defined by the client to avoid unnecessary memory barrier. */ @@ -134,6 +157,15 @@ # define AO_HAVE_double_store_release # endif +# if (__SIZEOF_SIZE_T__ == 4 && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)) \ + || (__SIZEOF_SIZE_T__ == 8 /* half of AO_double_t */ \ + && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)) +# define AO_GCC_HAVE_double_SYNC_CAS +# endif + +#endif /* AO_HAVE_DOUBLE_PTR_STORAGE */ + +#ifdef AO_GCC_HAVE_double_SYNC_CAS # ifndef AO_HAVE_double_compare_and_swap AO_INLINE int AO_double_compare_and_swap(volatile AO_double_t *addr, @@ -150,4 +182,4 @@ # endif /* TODO: Add double CAS _acquire/release/full primitives. */ -#endif /* AO_HAVE_DOUBLE_PTR_STORAGE */ +#endif /* AO_GCC_HAVE_double_SYNC_CAS */ |