diff options
Diffstat (limited to 'sysdeps/tile/tilegx/bits/atomic.h')
| -rw-r--r-- | sysdeps/tile/tilegx/bits/atomic.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sysdeps/tile/tilegx/bits/atomic.h b/sysdeps/tile/tilegx/bits/atomic.h index ac654b8946..e75efb1c41 100644 --- a/sysdeps/tile/tilegx/bits/atomic.h +++ b/sysdeps/tile/tilegx/bits/atomic.h @@ -21,7 +21,15 @@ #include <arch/spr_def.h> -#define __HAVE_64B_ATOMICS 1 +#ifdef _LP64 +# define __HAVE_64B_ATOMICS 1 +#else +/* tilegx32 does have 64-bit atomics, but assumptions in the semaphore + code mean that unaligned 64-bit atomics will be used if this symbol + is true, and unaligned atomics are not supported on tile. */ +# define __HAVE_64B_ATOMICS 0 +#endif + #define USE_ATOMIC_COMPILER_BUILTINS 0 /* Pick appropriate 8- or 4-byte instruction. */ |