When using sigaction() to install cntrl-c handler do not also use signal().

gdb/ChangeLog

@@ -1,5 +1,9 @@
 Mon Dec 15 15:13:57 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 
+	* remote-sim.c (gdbsim_wait): When HAVE_SIGACTION and SA_RESTART
+ 	intall cntrl-c handler with SA_RESTART clear.  On BSD systems this
+ 	stops read syscalls's being restarted.
+
 	* configure.in (configdirs): Check for sigaction.
 	* configure: Re-generate.
 

gdb/remote-sim.c

@@ -700,9 +700,8 @@ gdbsim_wait (pid, status)
     prev_sigint = osa.sa_handler;
   }
 #else
-  prev_sigint = signal (SIGINT, cntrl_c);
-#endif
   prev_sigint = signal (SIGINT, gdbsim_cntrl_c);
+#endif
   sim_resume (gdbsim_desc, resume_step,
 	      target_signal_to_host (resume_siggnal));
   signal (SIGINT, prev_sigint);