1 /* $NetBSD: emuspeed.c,v 1.8 2011/05/18 18:41:59 tsutsui 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 <err.h>
30 #include <setjmp.h>
31 #include <signal.h>
32 #include <stdlib.h>
33 #include <stdio.h>
34 #include <time.h>
35 #include <unistd.h>
36
37 #include "speed.h"
38
39 #define PRECISION 500
40
41 const struct test {
42 const char *name;
43 void (*func)(int);
44 const char *comment;
45 } testlist[] = {
46 {"Illegal", illegal, "(test: unimplemented)"},
47 {"mulsl Da,Db", mul32sreg, "(test: should be native)"},
48 {"mulsl sp@(8),Da", mul32smem, "(test: should be native)\n"},
49
50 {"mulsl Dn,Da:Db", mul64sreg, "emulated on 68060"},
51 {"mulul Dn,Da:Db", mul64ureg, "\t\""},
52 {"mulsl sp@(8),Da:Db", mul64smem, "\t\""},
53 {"mulul sp@(8),Da:Db", mul64umem, "\t\"\n"},
54
55 {"divsl Da:Db,Dn", div64sreg, "\t\""},
56 {"divul Da:Db,Dn", div64ureg, "\t\""},
57 {"divsl Da:Db,sp@(8)", div64smem, "\t\""},
58 {"divul Da:Db,sp@(8)", div64umem, "\t\"\n"},
59
60 {NULL, NULL, NULL}
61 };
62
63 jmp_buf jbuf;
64 void illhand (int);
65 int main(int, char *[]);
66
67 int
main(argc,argv)68 main(argc, argv)
69 int argc;
70 char *argv[];
71 {
72 const struct test *t;
73 clock_t start, stop;
74 int count;
75
76
77 if (signal(SIGILL, &illhand))
78 warn("%s: can't install illegal instruction handler.",
79 argv[0]);
80
81 printf("Speed of instructions which are emulated on some cpus:\n\n");
82 (void)sleep(1);
83 for (t=testlist; t->name; t++) {
84 printf("%-20s", t->name);
85 fflush(stdout);
86
87 if (setjmp(jbuf)) {
88 printf("%12s %s\n", "[unimplemented]", t->comment);
89 continue;
90 }
91
92 count = 1000;
93 do {
94 count *= 2;
95 start = clock();
96 t->func(count);
97 stop = clock();
98 } while ((stop - start) < PRECISION);
99 printf("%10lu/s %s\n",
100 CLOCKS_PER_SEC*(count /(stop - start)),
101 t->comment);
102 }
103 exit (0);
104 }
105
106 void
illhand(int i)107 illhand(int i)
108 {
109 longjmp(jbuf, 1);
110 }
111