83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
/* $NetBSD: emuspeed.c,v 1.4 1999/01/31 10:28:57 is Exp $ */
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#include <setjmp.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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#include "speed.h"
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#define PRECISION 500
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const struct test {
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char *name;
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void (*func)__P((int));
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char *comment;
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} testlist[] = {
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{"Illegal", illegal, "(test: unimplemented)"},
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{"mulsl Da,Db", mul32sreg, "(test: should be native)"},
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{"mulsl sp@(8),Da", mul32smem, "(test: should be native)\n"},
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{"mulsl Dn,Da:Db", mul64sreg, "emulated on 68060"},
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{"mulul Dn,Da:Db", mul64ureg, "\t\""},
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{"mulsl sp@(8),Da:Db", mul64smem, "\t\""},
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{"mulul sp@(8),Da:Db", mul64umem, "\t\"\n"},
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{"divsl Da:Db,Dn", div64sreg, "\t\""},
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{"divul Da:Db,Dn", div64ureg, "\t\""},
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{"divsl Da:Db,sp@(8)", div64smem, "\t\""},
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{"divul Da:Db,sp@(8)", div64umem, "\t\"\n"},
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{NULL, NULL, NULL}
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};
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jmp_buf jbuf;
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void illhand (int);
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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const struct test *t;
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clock_t start, stop;
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int count;
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if (signal(SIGILL, &illhand))
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warn("%s: can't install illegal instruction handler.",
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argv[0]);
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printf("Speed of instructions which are emulated on some cpus:\n\n");
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(void)sleep(1);
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for (t=testlist; t->name; t++) {
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printf("%-20s", t->name);
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fflush(stdout);
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if (setjmp(jbuf)) {
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printf("%12s %s\n", "[unimplemented]", t->comment);
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continue;
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}
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count = 1000;
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do {
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count *= 2;
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start = clock();
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t->func(count);
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stop = clock();
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} while ((stop - start) < PRECISION);
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printf("%10d/s %s\n",
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CLOCKS_PER_SEC*(count /(stop - start)),
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t->comment);
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}
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exit (0);
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}
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void
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illhand(int i)
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{
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longjmp(jbuf, 1);
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}
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