The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/amd64/vmm/vmm_util.c

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    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: releng/11.0/sys/amd64/vmm/vmm_util.c 245678 2013-01-20 03:42:49Z neel $
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/11.0/sys/amd64/vmm/vmm_util.c 245678 2013-01-20 03:42:49Z neel $");
   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 
   39 boolean_t
   40 vmm_is_intel(void)
   41 {
   42 
   43         if (strcmp(cpu_vendor, "GenuineIntel") == 0)
   44                 return (TRUE);
   45         else
   46                 return (FALSE);
   47 }
   48 
   49 boolean_t
   50 vmm_is_amd(void)
   51 {
   52         if (strcmp(cpu_vendor, "AuthenticAMD") == 0)
   53                 return (TRUE);
   54         else
   55                 return (FALSE);
   56 }
   57 
   58 boolean_t
   59 vmm_supports_1G_pages(void)
   60 {
   61         unsigned int regs[4];
   62 
   63         /*
   64          * CPUID.80000001:EDX[bit 26] = 1 indicates support for 1GB pages
   65          *
   66          * Both Intel and AMD support this bit.
   67          */
   68         if (cpu_exthigh >= 0x80000001) {
   69                 do_cpuid(0x80000001, regs);
   70                 if (regs[3] & (1 << 26))
   71                         return (TRUE);
   72         }
   73         return (FALSE);
   74 }
   75 
   76 #include <sys/proc.h>
   77 #include <machine/frame.h>
   78 #define DUMP_REG(x)     printf(#x "\t\t0x%016lx\n", (long)(tf->tf_ ## x))
   79 #define DUMP_SEG(x)     printf(#x "\t\t0x%04x\n", (unsigned)(tf->tf_ ## x))
   80 void
   81 dump_trapframe(struct trapframe *tf)
   82 {
   83         DUMP_REG(rdi);
   84         DUMP_REG(rsi);
   85         DUMP_REG(rdx);
   86         DUMP_REG(rcx);
   87         DUMP_REG(r8);
   88         DUMP_REG(r9);
   89         DUMP_REG(rax);
   90         DUMP_REG(rbx);
   91         DUMP_REG(rbp);
   92         DUMP_REG(r10);
   93         DUMP_REG(r11);
   94         DUMP_REG(r12);
   95         DUMP_REG(r13);
   96         DUMP_REG(r14);
   97         DUMP_REG(r15);
   98         DUMP_REG(trapno);
   99         DUMP_REG(addr);
  100         DUMP_REG(flags);
  101         DUMP_REG(err);
  102         DUMP_REG(rip);
  103         DUMP_REG(rflags);
  104         DUMP_REG(rsp);
  105         DUMP_SEG(cs);
  106         DUMP_SEG(ss);
  107         DUMP_SEG(fs);
  108         DUMP_SEG(gs);
  109         DUMP_SEG(es);
  110         DUMP_SEG(ds);
  111 }

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