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-rw-r--r--target-i386/helper.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/target-i386/helper.h b/target-i386/helper.h
index 9df198a0e4..9bbf4fc180 100644
--- a/target-i386/helper.h
+++ b/target-i386/helper.h
@@ -75,6 +75,9 @@ void helper_boundl(target_ulong a0, int v);
void helper_rsm(void);
void helper_into(int next_eip_addend);
void helper_cmpxchg8b(target_ulong a0);
+#ifdef TARGET_X86_64
+void helper_cmpxchg16b(target_ulong a0);
+#endif
void helper_single_step(void);
void helper_cpuid(void);
void helper_rdtsc(void);