1 files changed, 6 insertions, 0 deletions
diff --git a/tcg/tcg.h b/tcg/tcg.h
index f3f988969..49ede770c 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -46,6 +46,8 @@ typedef uint64_t tcg_target_ulong;
 #error unsupported
 #endif
 
+#include "config-host.h"
+#include "qemu/thread.h"
 #include "tcg-target.h"
 #include "tcg-runtime.h"
 
@@ -490,6 +492,7 @@ struct TCGContext {
     TCGLabelQemuLdst *qemu_ldst_labels;
     int nb_qemu_ldst_labels;
 #endif
+    QemuMutex lock;
 };
 
 extern TCGContext tcg_ctx;
@@ -670,6 +673,9 @@ 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_register_helper(void *func, const char *name);
 const char *tcg_helper_get_name(TCGContext *s, void *func);