1 files changed, 52 insertions, 0 deletions
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 2a975eaf69..492ea0826c 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -24,6 +24,7 @@
 #include "qemu/bitops.h"
 #include "exec/cpu_ldst.h"
 #include "translate-all.h"
+#include "exec/helper-proto.h"
 
 #undef EAX
 #undef ECX
@@ -573,3 +574,54 @@ int cpu_signal_handler(int host_signum, void *pinfo,
 #error host CPU specific signal handler needed
 
 #endif
+
+/* The softmmu versions of these helpers are in cputlb.c.  */
+
+/* Do not allow unaligned operations to proceed.  Return the host address.  */
+static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr,
+                               int size, uintptr_t retaddr)
+{
+    /* Enforce qemu required alignment.  */
+    if (unlikely(addr & (size - 1))) {
+        cpu_loop_exit_atomic(ENV_GET_CPU(env), retaddr);
+    }
+    return g2h(addr);
+}
+
+/* Macro to call the above, with local variables from the use context.  */
+#define ATOMIC_MMU_LOOKUP  atomic_mmu_lookup(env, addr, DATA_SIZE, GETPC())
+
+#define ATOMIC_NAME(X)   HELPER(glue(glue(atomic_ ## X, SUFFIX), END))
+#define EXTRA_ARGS
+
+#define DATA_SIZE 1
+#include "atomic_template.h"
+
+#define DATA_SIZE 2
+#include "atomic_template.h"
+
+#define DATA_SIZE 4
+#include "atomic_template.h"
+
+#ifdef CONFIG_ATOMIC64
+#define DATA_SIZE 8
+#include "atomic_template.h"
+#endif
+
+/* The following is only callable from other helpers, and matches up
+   with the softmmu version.  */
+
+#ifdef CONFIG_ATOMIC128
+
+#undef EXTRA_ARGS
+#undef ATOMIC_NAME
+#undef ATOMIC_MMU_LOOKUP
+
+#define EXTRA_ARGS     , TCGMemOpIdx oi, uintptr_t retaddr
+#define ATOMIC_NAME(X) \
+    HELPER(glue(glue(glue(atomic_ ## X, SUFFIX), END), _mmu))
+#define ATOMIC_MMU_LOOKUP  atomic_mmu_lookup(env, addr, DATA_SIZE, retaddr)
+
+#define DATA_SIZE 16
+#include "atomic_template.h"
+#endif /* CONFIG_ATOMIC128 */