regress/sys/arch/m68k/emuspeed/emuspeed.c

   1 /*      $NetBSD: emuspeed.c,v 1.6 2005/02/06 06:05:19 perry Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <setjmp.h>
  30 #include <signal.h>
  31 #include <stdlib.h>
  32 #include <stdio.h>
  33 #include <time.h>
  34 #include <unistd.h>
  35
  36 #include "speed.h"
  37
  38 #define PRECISION 500
  39
  40 const struct test {
  41         char *name;
  42         void (*func)(int);
  43         char *comment;
  44 } testlist[] = {
  45         {"Illegal", illegal, "(test: unimplemented)"},
  46         {"mulsl Da,Db", mul32sreg, "(test: should be native)"},
  47         {"mulsl sp@(8),Da", mul32smem, "(test: should be native)\n"},
  48
  49         {"mulsl Dn,Da:Db", mul64sreg, "emulated on 68060"},
  50         {"mulul Dn,Da:Db", mul64ureg, "\t\""},
  51         {"mulsl sp@(8),Da:Db", mul64smem, "\t\""},
  52         {"mulul sp@(8),Da:Db", mul64umem, "\t\"\n"},
  53
  54         {"divsl Da:Db,Dn", div64sreg, "\t\""},
  55         {"divul Da:Db,Dn", div64ureg, "\t\""},
  56         {"divsl Da:Db,sp@(8)", div64smem, "\t\""},
  57         {"divul Da:Db,sp@(8)", div64umem, "\t\"\n"},
  58
  59         {NULL, NULL, NULL}
  60 };
  61
  62 jmp_buf jbuf;
  63 void illhand (int);
  64
  65 int
  66 main(argc, argv)
  67         int argc;
  68         char *argv[];
  69 {
  70         const struct test *t;
  71         clock_t start, stop;
  72         int count;
  73
  74
  75         if (signal(SIGILL, &illhand))
  76                 warn("%s: can't install illegal instruction handler.",
  77                     argv[0]);
  78
  79         printf("Speed of instructions which are emulated on some cpus:\n\n");
  80         (void)sleep(1);
  81         for (t=testlist; t->name; t++) {
  82                 printf("%-20s", t->name);
  83                 fflush(stdout);
  84
  85                 if (setjmp(jbuf)) {
  86                         printf("%12s    %s\n", "[unimplemented]", t->comment);
  87                         continue;
  88                 }
  89
  90                 count = 1000;
  91                 do {
  92                         count *= 2;
  93                         start = clock();
  94                         t->func(count);
  95                         stop = clock();
  96                 } while ((stop - start) < PRECISION);
  97                 printf("%10d/s    %s\n",
  98                     CLOCKS_PER_SEC*(count /(stop - start)),
  99                     t->comment);
 100         }
 101         exit (0);
 102 }
 103
 104 void
 105 illhand(int i)
 106 {
 107         longjmp(jbuf, 1);
 108 }