vmm_util.c revision 351753 
1/*-
2 * Copyright (c) 2011 NetApp, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/amd64/vmm/vmm_util.c 351753 2019-09-03 16:23:46Z emaste $
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/sys/amd64/vmm/vmm_util.c 351753 2019-09-03 16:23:46Z emaste $");
31
32#include <sys/param.h>
33#include <sys/libkern.h>
34
35#include <machine/md_var.h>
36
37#include "vmm_util.h"
38
39bool
40vmm_is_intel(void)
41{
42
43	return (strcmp(cpu_vendor, "GenuineIntel") == 0);
44}
45
46bool
47vmm_is_amd(void)
48{
49	return (strcmp(cpu_vendor, "AuthenticAMD") == 0);
50}
51
52bool
53vmm_supports_1G_pages(void)
54{
55	unsigned int regs[4];
56
57	/*
58	 * CPUID.80000001:EDX[bit 26] = 1 indicates support for 1GB pages
59	 *
60	 * Both Intel and AMD support this bit.
61	 */
62	if (cpu_exthigh >= 0x80000001) {
63		do_cpuid(0x80000001, regs);
64		if (regs[3] & (1 << 26))
65			return (true);
66	}
67	return (false);
68}
69
70#include <sys/proc.h>
71#include <machine/frame.h>
72#define	DUMP_REG(x)	printf(#x "\t\t0x%016lx\n", (long)(tf->tf_ ## x))
73#define	DUMP_SEG(x)	printf(#x "\t\t0x%04x\n", (unsigned)(tf->tf_ ## x))
74void
75dump_trapframe(struct trapframe *tf)
76{
77	DUMP_REG(rdi);
78	DUMP_REG(rsi);
79	DUMP_REG(rdx);
80	DUMP_REG(rcx);
81	DUMP_REG(r8);
82	DUMP_REG(r9);
83	DUMP_REG(rax);
84	DUMP_REG(rbx);
85	DUMP_REG(rbp);
86	DUMP_REG(r10);
87	DUMP_REG(r11);
88	DUMP_REG(r12);
89	DUMP_REG(r13);
90	DUMP_REG(r14);
91	DUMP_REG(r15);
92	DUMP_REG(trapno);
93	DUMP_REG(addr);
94	DUMP_REG(flags);
95	DUMP_REG(err);
96	DUMP_REG(rip);
97	DUMP_REG(rflags);
98	DUMP_REG(rsp);
99	DUMP_SEG(cs);
100	DUMP_SEG(ss);
101	DUMP_SEG(fs);
102	DUMP_SEG(gs);
103	DUMP_SEG(es);
104	DUMP_SEG(ds);
105}
106