* Makefile.in (mingw-hdep.o, posix-hdep.o, remote-fileio.o): Update.

* event-loop.c (call_async_signal_handler): New.
	* event-loop.h (call_async_signal_handler)
	(gdb_call_async_signal_handler): Declare.
	(mark_async_signal_handler): Add comments.
	* event-top.c (handle_sigint): Use gdb_call_async_signal_handler.
	* mingw-hdep.c (sigint_event, sigint_handler): New.
	(gdb_select): Use them.  Wait for the readline signal handler
	to finish.
	(gdb_call_async_signal_handler, _initialize_mingw_hdep): New functions.
	* posix-hdep.c (gdb_call_async_signal_handler): New function.
	* remote-fileio.c (sigint_fileio_token, async_remote_fileio_interrupt):
	New.
	(remote_fileio_ctrl_c_signal_handler): Use
	gdb_call_async_signal_handler.
	(initialize_remote_fileio): Initialize sigint_fileio_token.
	* remote.c (initialize_sigint_signal_handler, handle_remote_sigint): Do
	not initialize tokens here.
	(handle_remote_sigint_twice): Likewise.  Reinstall
	handle_remote_sigint.
	(async_remote_interrupt_twice): Just call interrupt_query.
	(cleanup_sigint_signal_handler): Do not delete tokens.
	(remote_interrupt, remote_interrupt_twice): Use
	gdb_call_async_signal_handler.
	(interrupt_query): Reinstall the default signal handler.
	(_initialize_remote): Initialize tokens here.

gdb/remote.c

@@ -3158,8 +3158,6 @@ remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal)
 static void
 initialize_sigint_signal_handler (void)
 {
-  sigint_remote_token =
-    create_async_signal_handler (async_remote_interrupt, NULL);
   signal (SIGINT, handle_remote_sigint);
 }
 
@@ -3168,8 +3166,6 @@ static void
 handle_remote_sigint (int sig)
 {
   signal (sig, handle_remote_sigint_twice);
-  sigint_remote_twice_token =
-    create_async_signal_handler (async_remote_interrupt_twice, NULL);
   mark_async_signal_handler_wrapper (sigint_remote_token);
 }
 
@@ -3179,9 +3175,7 @@ handle_remote_sigint (int sig)
 static void
 handle_remote_sigint_twice (int sig)
 {
-  signal (sig, handle_sigint);
-  sigint_remote_twice_token =
-    create_async_signal_handler (inferior_event_handler_wrapper, NULL);
+  signal (sig, handle_remote_sigint);
   mark_async_signal_handler_wrapper (sigint_remote_twice_token);
 }
 
@@ -3203,13 +3197,8 @@ async_remote_interrupt_twice (gdb_client_data arg)
 {
   if (remote_debug)
     fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n");
-  /* Do something only if the target was not killed by the previous
-     cntl-C.  */
-  if (target_executing)
-    {
-      interrupt_query ();
-      signal (SIGINT, handle_remote_sigint);
-    }
+
+  interrupt_query ();
 }
 
 /* Reinstall the usual SIGINT handlers, after the target has
@@ -3218,10 +3207,6 @@ static void
 cleanup_sigint_signal_handler (void *dummy)
 {
   signal (SIGINT, handle_sigint);
-  if (sigint_remote_twice_token)
-    delete_async_signal_handler (&sigint_remote_twice_token);
-  if (sigint_remote_token)
-    delete_async_signal_handler (&sigint_remote_token);
 }
 
 /* Send ^C to target to halt it.  Target will respond, and send us a
@@ -3239,10 +3224,7 @@ remote_interrupt (int signo)
   /* If this doesn't work, try more severe steps.  */
   signal (signo, remote_interrupt_twice);
 
-  if (remote_debug)
-    fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
-
-  target_stop ();
+  gdb_call_async_signal_handler (sigint_remote_token, 1);
 }
 
 /* The user typed ^C twice.  */
@@ -3251,7 +3233,7 @@ static void
 remote_interrupt_twice (int signo)
 {
   signal (signo, ofunc);
-  interrupt_query ();
+  gdb_call_async_signal_handler (sigint_remote_twice_token, 1);
   signal (signo, remote_interrupt);
 }
 
@@ -3282,6 +3264,7 @@ interrupt_query (void)
 Give up (and stop debugging it)? "))
     {
       target_mourn_inferior ();
+      signal (SIGINT, handle_sigint);
       deprecated_throw_reason (RETURN_QUIT);
     }
 
@@ -7507,6 +7490,12 @@ _initialize_remote (void)
   /* Hook into new objfile notification.  */
   observer_attach_new_objfile (remote_new_objfile);
 
+  /* Set up signal handlers.  */
+  sigint_remote_token =
+    create_async_signal_handler (async_remote_interrupt, NULL);
+  sigint_remote_twice_token =
+    create_async_signal_handler (inferior_event_handler_wrapper, NULL);
+
 #if 0
   init_remote_threadtests ();
 #endif