emuspeed.c revision 1.1 
1#include <setjmp.h>
2#include <signal.h>
3#include <stdlib.h>
4#include <stdio.h>
5#include <time.h>
6#include <unistd.h>
7
8#include "speed.h"
9
10const struct test {
11	char *name;
12	void (*func)__P((int));
13	char *comment;
14	int count;
15} testlist[] = {
16	{"Illegal", illegal, "(test: unimplemented)", 1},
17	{"mulsl Da,Db", mul32sreg, "(test: should be native)", 200000000},
18	{"mulsl sp@(8),Da", mul32smem, "(test: should be native)\n",
19	    200000000},
20
21	{"mulsl Dn,Da:Db", mul64sreg, "emulated on 68060", 2000000},
22	{"mulul Dn,Da:Db", mul64ureg, "\t\"", 2000000},
23	{"mulsl sp@(8),Da:Db", mul64smem, "\t\"", 1000000},
24	{"mulul sp@(8),Da:Db", mul64umem, "\t\"\n", 1000000},
25
26	{"divsl Da:Db,Dn", div64sreg, "\t\"", 500000},
27	{"divul Da:Db,Dn", div64ureg, "\t\"", 500000},
28	{"divsl Da:Db,sp@(8)", div64smem, "\t\"", 300000},
29	{"divul Da:Db,sp@(8)", div64umem, "\t\"\n", 300000},
30
31	{NULL, NULL, NULL}
32};
33
34jmp_buf jbuf;
35void illhand (int);
36
37int
38main(argc, argv)
39	int argc;
40	char *argv[];
41{
42	const struct test *t;
43	clock_t start, stop;
44
45
46	if (signal(SIGILL, &illhand))
47		warn("%s: can't install illegal instruction handler.",
48		    argv[0]);
49
50	printf("Speed of instructions which are emulated on some cpus:\n\n");
51	(void)sleep(1);
52	for (t=testlist; t->name; t++) {
53		printf("%-20s", t->name);
54		fflush(stdout);
55
56		if (setjmp(jbuf)) {
57			printf("%15s    %s\n", "[unimplemented]", t->comment);
58			continue;
59		}
60
61		start = clock();
62		t->func(t->count);
63		stop = clock();
64		printf("%13d/s    %s\n",
65		    CLOCKS_PER_SEC*(t->count /(stop - start)),
66		    t->comment);
67	}
68	exit (0);
69}
70
71void
72illhand(int i)
73{
74	longjmp(jbuf, 1);
75}
76