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/* $OpenBSD: emuspeed.c,v 1.3 2002/02/16 21:27:32 millert Exp $ */
/* $NetBSD: emuspeed.c,v 1.3 1998/06/15 14:43:25 is Exp $ */
#include <setjmp.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include "speed.h"
#define PRECISION 500
const struct test {
char *name;
void (*func)(int);
char *comment;
} testlist[] = {
{"Illegal", illegal, "(test: unimplemented)"},
{"mulsl Da,Db", mul32sreg, "(test: should be native)"},
{"mulsl sp@(8),Da", mul32smem, "(test: should be native)\n"},
{"mulsl Dn,Da:Db", mul64sreg, "emulated on 68060"},
{"mulul Dn,Da:Db", mul64ureg, "\t\""},
{"mulsl sp@(8),Da:Db", mul64smem, "\t\""},
{"mulul sp@(8),Da:Db", mul64umem, "\t\"\n"},
{"divsl Da:Db,Dn", div64sreg, "\t\""},
{"divul Da:Db,Dn", div64ureg, "\t\""},
{"divsl Da:Db,sp@(8)", div64smem, "\t\""},
{"divul Da:Db,sp@(8)", div64umem, "\t\"\n"},
{NULL, NULL, NULL}
};
jmp_buf jbuf;
void illhand (int);
int
main(argc, argv)
int argc;
char *argv[];
{
const struct test *t;
clock_t start, stop;
int count;
if (signal(SIGILL, &illhand))
warn("%s: can't install illegal instruction handler.",
argv[0]);
printf("Speed of instructions which are emulated on some cpus:\n\n");
(void)sleep(1);
for (t=testlist; t->name; t++) {
printf("%-20s", t->name);
fflush(stdout);
if (setjmp(jbuf)) {
printf("%15s %s\n", "[unimplemented]", t->comment);
continue;
}
count = 1000;
do {
count *= 2;
start = clock();
t->func(count);
stop = clock();
} while ((stop - start) < PRECISION);
printf("%13d/s %s\n",
CLOCKS_PER_SEC*(count /(stop - start)),
t->comment);
}
exit (0);
}
void
illhand(int i)
{
longjmp(jbuf, 1);
}
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