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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*
* Copyright 2020 Oxide Computer Company
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/specialreg.h>
#include <machine/vmm.h>
#include "vmcb.h"
#include "svm.h"
struct vmcb_segment *
vmcb_segptr(struct vmcb *vmcb, int type)
{
struct vmcb_state *state = &vmcb->state;
switch (type) {
case VM_REG_GUEST_CS:
return (&state->cs);
case VM_REG_GUEST_DS:
return (&state->ds);
case VM_REG_GUEST_ES:
return (&state->es);
case VM_REG_GUEST_FS:
return (&state->fs);
case VM_REG_GUEST_GS:
return (&state->gs);
case VM_REG_GUEST_SS:
return (&state->ss);
case VM_REG_GUEST_GDTR:
return (&state->gdt);
case VM_REG_GUEST_IDTR:
return (&state->idt);
case VM_REG_GUEST_LDTR:
return (&state->ldt);
case VM_REG_GUEST_TR:
return (&state->tr);
default:
panic("unexpected seg %d", type);
}
}
uint64_t *
vmcb_regptr(struct vmcb *vmcb, int ident, uint32_t *dirtyp)
{
struct vmcb_state *state;
uint64_t *res = NULL;
uint32_t dirty = VMCB_CACHE_NONE;
state = &vmcb->state;
switch (ident) {
case VM_REG_GUEST_CR2:
res = &state->cr2;
dirty = VMCB_CACHE_CR2;
break;
case VM_REG_GUEST_CR3:
res = &state->cr3;
dirty = VMCB_CACHE_CR;
break;
case VM_REG_GUEST_CR4:
res = &state->cr4;
dirty = VMCB_CACHE_CR;
break;
case VM_REG_GUEST_DR6:
res = &state->dr6;
dirty = VMCB_CACHE_DR;
break;
case VM_REG_GUEST_DR7:
res = &state->dr7;
dirty = VMCB_CACHE_DR;
break;
case VM_REG_GUEST_EFER:
res = &state->efer;
dirty = VMCB_CACHE_CR;
break;
case VM_REG_GUEST_RAX:
res = &state->rax;
break;
case VM_REG_GUEST_RFLAGS:
res = &state->rflags;
break;
case VM_REG_GUEST_RIP:
res = &state->rip;
break;
case VM_REG_GUEST_RSP:
res = &state->rsp;
break;
default:
panic("unexpected register %d", ident);
break;
}
ASSERT(res != NULL);
if (dirtyp != NULL) {
*dirtyp |= dirty;
}
return (res);
}
uint64_t *
vmcb_msr_ptr(struct vmcb *vmcb, uint32_t msr, uint32_t *dirtyp)
{
uint64_t *res = NULL;
uint32_t dirty = 0;
struct vmcb_state *state = &vmcb->state;
switch (msr) {
case MSR_EFER:
res = &state->efer;
dirty = VMCB_CACHE_CR;
break;
case MSR_GSBASE:
res = &state->gs.base;
dirty = VMCB_CACHE_SEG;
break;
case MSR_FSBASE:
res = &state->fs.base;
dirty = VMCB_CACHE_SEG;
break;
case MSR_KGSBASE:
res = &state->kernelgsbase;
break;
case MSR_STAR:
res = &state->star;
break;
case MSR_LSTAR:
res = &state->lstar;
break;
case MSR_CSTAR:
res = &state->cstar;
break;
case MSR_SF_MASK:
res = &state->sfmask;
break;
case MSR_SYSENTER_CS_MSR:
res = &state->sysenter_cs;
break;
case MSR_SYSENTER_ESP_MSR:
res = &state->sysenter_esp;
break;
case MSR_SYSENTER_EIP_MSR:
res = &state->sysenter_eip;
break;
case MSR_PAT:
res = &state->g_pat;
dirty = VMCB_CACHE_NP;
break;
}
if (res != NULL && dirtyp != NULL) {
*dirtyp = dirty;
}
return (res);
}
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