moved i368 specific code

i386-gen.c

@@ -443,11 +443,18 @@ void gfunc_epilog(void)
     *func_sub_sp_ptr = (-loc + 3) & -4; 
 }
 
+/* generate a jump to a label */
 int gjmp(int t)
 {
     return psym(0xe9, t);
 }
 
+/* generate a jump to a fixed address */
+void gjmp_addr(int a)
+{
+    oad(0xe9, a - ind - 5);
+}
+
 /* generate a test. set 'inv' to invert test. Stack entry is popped */
 int gtst(int inv, int t)
 {