diff options
Diffstat (limited to 'sysdeps/m68k/m680x0')
| -rw-r--r-- | sysdeps/m68k/m680x0/m68020/atomic-machine.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/m68k/m680x0/m68020/atomic-machine.h b/sysdeps/m68k/m680x0/m68020/atomic-machine.h index 00dc22d79d..83238f51de 100644 --- a/sysdeps/m68k/m680x0/m68020/atomic-machine.h +++ b/sysdeps/m68k/m680x0/m68020/atomic-machine.h @@ -47,6 +47,9 @@ 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 1 + #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ ({ __typeof (*(mem)) __ret; \ __asm __volatile ("cas%.b %0,%2,%1" \ |