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-rw-r--r--sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h b/sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h
index 6755a056f4..1daac514a9 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h
@@ -39,6 +39,9 @@ typedef uintmax_t uatomic_max_t;
 #define __HAVE_64B_ATOMICS 0
 #define USE_ATOMIC_COMPILER_BUILTINS 0
 
+/* XXX Is this actually correct?  */
+#define ATOMIC_EXCHANGE_USES_CAS 1
+
 /* The only basic operation needed is compare and exchange.  */
 /* For ColdFire we'll have to trap into the kernel mode anyway,
    so trap from the library rather then from the kernel wrapper.  */