Pacify GCC - SIM_SIGNONE missing in enum, xmalloc/free VS ZALLOC/zfree.

sim/common/ChangeLog

@@ -1,3 +1,7 @@
+Fri Nov 21 09:32:32 1997  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* sim-signal.c (sim_signal_to_host): Return 0 for SIM_SIGNONE.
+
 Thu Nov 20 20:35:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 
 	* sim-signal.h: Start simulator signals at 64 so that host signal

sim/common/sim-signal.c

@@ -78,6 +78,10 @@ sim_signal_to_host (SIM_DESC sd, SIM_SIGNAL sig)
       return SIGFPE;
 #endif
       break;
+
+    case SIM_SIGNONE:
+      return 0;
+      break;
     }
 
   sim_io_eprintf (sd, "sim_signal_to_host: unknown signal: %d\n", sig);