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-rw-r--r--sysdeps/m68k/coldfire/bits/atomic.h4
-rw-r--r--sysdeps/m68k/m680x0/m68020/bits/atomic.h3
2 files changed, 7 insertions, 0 deletions
diff --git a/sysdeps/m68k/coldfire/bits/atomic.h b/sysdeps/m68k/coldfire/bits/atomic.h
index ec0c59a7da..4851999fca 100644
--- a/sysdeps/m68k/coldfire/bits/atomic.h
+++ b/sysdeps/m68k/coldfire/bits/atomic.h
@@ -49,6 +49,10 @@ typedef uintptr_t uatomicptr_t;
 typedef intmax_t atomic_max_t;
 typedef uintmax_t uatomic_max_t;
 
+/* If we have just non-atomic operations, we can as well make them wide.  */
+#define __HAVE_64B_ATOMICS 1
+#define USE_ATOMIC_COMPILER_BUILTINS 0
+
 /* The only basic operation needed is compare and exchange.  */
 #define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
   ({ __typeof (mem) __gmemp = (mem);				      \
diff --git a/sysdeps/m68k/m680x0/m68020/bits/atomic.h b/sysdeps/m68k/m680x0/m68020/bits/atomic.h
index 0f081f169a..395bac06b9 100644
--- a/sysdeps/m68k/m680x0/m68020/bits/atomic.h
+++ b/sysdeps/m68k/m680x0/m68020/bits/atomic.h
@@ -44,6 +44,9 @@ typedef uintptr_t uatomicptr_t;
 typedef intmax_t atomic_max_t;
 typedef uintmax_t uatomic_max_t;
 
+#define __HAVE_64B_ATOMICS 1
+#define USE_ATOMIC_COMPILER_BUILTINS 0
+
 #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
   ({ __typeof (*(mem)) __ret;						      \
      __asm __volatile ("cas%.b %0,%2,%1"				      \