2011-06-06 Pedro Alves <pedro@codesourcery.com>

	gdb/
	* infcall.c (run_inferior_call): Don't mask async.  Instead force
	a synchronous wait, if the target can async.

	* target.h (struct target_ops): Delete to_async_mask.
	(target_async_mask): Delete.
	* target.c (update_current_target): Delete references to to_async_mask.
	* linux-nat.c (linux_nat_async_mask_value): Delete.
	(linux_nat_is_async_p, linux_nat_can_async_p): Remove references
	to linux_nat_async_mask_value.
	(linux_nat_async_mask): Delete.
	(linux_nat_async, linux_nat_close): Remove references to
	linux_nat_async_mask_value.
	* record.c (record_async_mask_value): Delete.
	(record_async): Remove references to record_async_mask_value.
	(record_async_mask): Delete.
	(record_can_async_p, record_is_async_p): Remove references to
	record_async_mask_value.
	(init_record_ops, init_record_core_ops): Remove references to
	record_async_mask.
	* remote.c (remote_async_mask_value): Delete.
	(init_remote_ops): Remove reference to remote_async_mask.
	(remote_can_async_p, remote_is_async_p): Remove references to
	remote_async_mask_value.
	(remote_async): Remove references to remote_async_mask_value.
	(remote_async_mask): Delete.

	* infrun.c (fetch_inferior_event): Don't claim registers changed
	if the current thread is already not executing.

1 files changed, 12 insertions, 14 deletions

diff --git a/gdb/infcall.c b/gdb/infcall.c
index 6553e2a..b8b7ff5 100644
--- a/gdb/infcall.c
+++ b/gdb/infcall.c
@@ -387,10 +387,8 @@ static struct gdb_exception
 run_inferior_call (struct thread_info *call_thread, CORE_ADDR real_pc)
 {
   volatile struct gdb_exception e;
-  int saved_async = 0;
   int saved_in_infcall = call_thread->control.in_infcall;
   ptid_t call_thread_ptid = call_thread->ptid;
-  char *saved_target_shortname = xstrdup (target_shortname);
 
   call_thread->control.in_infcall = 1;
 
@@ -401,22 +399,24 @@ run_inferior_call (struct thread_info *call_thread, CORE_ADDR real_pc)
   /* We want stop_registers, please...  */
   call_thread->control.proceed_to_finish = 1;
 
-  if (target_can_async_p ())
-    saved_async = target_async_mask (0);
-
   TRY_CATCH (e, RETURN_MASK_ALL)
-    proceed (real_pc, TARGET_SIGNAL_0, 0);
+    {
+      proceed (real_pc, TARGET_SIGNAL_0, 0);
+
+      /* Inferior function calls are always synchronous, even if the
+	 target supports asynchronous execution.  Do here what
+	 `proceed' itself does in sync mode.  */
+      if (target_can_async_p () && is_running (inferior_ptid))
+	{
+	  wait_for_inferior ();
+	  normal_stop ();
+	}
+    }
 
   /* At this point the current thread may have changed.  Refresh
      CALL_THREAD as it could be invalid if its thread has exited.  */
   call_thread = find_thread_ptid (call_thread_ptid);
 
-  /* Don't restore the async mask if the target has changed,
-     saved_async is for the original target.  */
-  if (saved_async
-      && strcmp (saved_target_shortname, target_shortname) == 0)
-    target_async_mask (saved_async);
-
   enable_watchpoints_after_interactive_call_stop ();
 
   /* Call breakpoint_auto_delete on the current contents of the bpstat
@@ -433,8 +433,6 @@ run_inferior_call (struct thread_info *call_thread, CORE_ADDR real_pc)
   if (call_thread != NULL)
     call_thread->control.in_infcall = saved_in_infcall;
 
-  xfree (saved_target_shortname);
-
   return e;
 }