59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2010 Intel Corporation; author: H. Peter Anvin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston MA 02110-1301, USA; either version 2 of the License, or
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* (at your option) any later version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/cpu.h>
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#include <console.h>
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#include <com32.h>
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static void dump_reg(const char *name, uint32_t val)
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{
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int i;
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printf("%-3s : %10u 0x%08x ", name, val, val);
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for (i = 3; i >= 0; i--) {
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uint8_t c = val >> (i*8);
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putchar((c >= ' ' && c <= '~') ? c : '.');
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}
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putchar('\n');
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}
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int main(int argc, char *argv[])
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{
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uint32_t leaf, counter;
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uint32_t eax, ebx, ecx, edx;
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if (argc < 2 || argc > 4) {
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printf("Usage: %s leaf [counter]\n", argv[0]);
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exit(1);
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}
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leaf = strtoul(argv[1], NULL, 0);
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counter = (argc > 2) ? strtoul(argv[2], NULL, 0) : 0;
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if (!cpu_has_eflag(EFLAGS_ID)) {
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printf("The CPUID instruction is not supported\n");
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exit(1);
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}
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cpuid_count(leaf, counter, &eax, &ebx, &ecx, &edx);
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dump_reg("eax", eax);
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dump_reg("ebx", ebx);
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dump_reg("ecx", ecx);
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dump_reg("edx", edx);
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return 0;
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}
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