--- uae/src/md-i386-gcc/support.c	2018/04/24 16:42:54	1.1.1.3
+++ uae/src/md-i386-gcc/support.c	2018/04/24 16:45:38	1.1.1.4
@@ -237,6 +237,9 @@ static RETSIGTYPE alarmhandler(int foo)
     }
 }
 
+#include <setjmp.h>
+jmp_buf catch_test;
+
 #ifdef __cplusplus
 static RETSIGTYPE illhandler(...)
 #else
@@ -244,14 +247,17 @@ static RETSIGTYPE illhandler(int foo)
 #endif
 {
     rpt_available = 0;
+    longjmp(catch_test,1);
 }
 
 void machdep_init (void)
 {
     rpt_available = 1;
+    fprintf(stderr,"Testing the RDTSC instruction ... ");
     signal (SIGILL, illhandler);
-    read_processor_time ();
+    if(setjmp(catch_test) == 0) read_processor_time();
     signal (SIGILL, SIG_DFL);
+    fprintf(stderr,"done.\n");
     if (! rpt_available) {
 	fprintf (stderr, "Your processor does not support the RDTSC instruction.\n");
 	return;