1 files changed, 5 insertions, 0 deletions
diff --git a/tcg/tcg.h b/tcg/tcg.h
index 7285f71fa..ea7ef8d34 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -27,6 +27,7 @@
 
 #include "qemu-common.h"
 #include "qemu/bitops.h"
+#include "qemu/thread.h"
 #include "tcg-target.h"
 
 /* Default target word size to pointer size.  */
@@ -533,6 +534,7 @@ struct TCGContext {
 
     /* The TCGBackendData structure is private to tcg-target.c.  */
     struct TCGBackendData *be;
+    QemuMutex lock;
 };
 
 extern TCGContext tcg_ctx;
@@ -711,6 +713,9 @@ void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
 TCGArg *tcg_optimize(TCGContext *s, uint16_t *tcg_opc_ptr, TCGArg *args,
                      TCGOpDef *tcg_op_def);
 
+extern void tcg_lock(void);
+extern void tcg_unlock(void);
+
 /* only used for debugging purposes */
 void tcg_dump_ops(TCGContext *s);