[Bug server/18130] gdbserver event loop is terminated by exception

["qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=18130

--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
The exception can be either caught in the caller of
the_low_target.prepare_to_resume (lwp) or not thrown out from prepare_to_resume
hook in each backend.

I had a hacky patch for the former approach, and the event loop isn't
terminated by the exception.

diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 48d905b..65b7110 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -3560,8 +3560,16 @@ linux_resume_one_lwp (struct lwp_info *lwp,
       *p_sig = NULL;
     }

+  TRY
+    {
   if (the_low_target.prepare_to_resume != NULL)
     the_low_target.prepare_to_resume (lwp);
+    }
+  CATCH (exception, RETURN_MASK_ERROR)
+    {
+      /**/
+    }
+  END_CATCH

   regcache_invalidate_thread (thread);
   errno = 0;
-------------------------------------------

However, I still not sure what is the best way to fix this issue.

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