--- linux-user/signal.c
+++ linux-user/signal.c
@@ -341,10 +341,15 @@
     k = &sigact_table[sig - 1];
     handler = k->sa._sa_handler;
     if (handler == TARGET_SIG_DFL) {
+        if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
+            kill(getpid(),SIGSTOP);
+            return 0;
+        } else
         /* default handler : ignore some signal. The other are fatal */
         if (sig != TARGET_SIGCHLD && 
             sig != TARGET_SIGURG && 
-            sig != TARGET_SIGWINCH) {
+            sig != TARGET_SIGWINCH &&
+            sig != TARGET_SIGCONT) {
             force_sig(sig);
         } else {
             return 0; /* indicate ignored */