1*47e07394SAndrew Turner /*- 2*47e07394SAndrew Turner * SPDX-License-Identifier: BSD-2-Clause 3*47e07394SAndrew Turner * 4*47e07394SAndrew Turner * Copyright (C) 2015 Mihai Carabas <mihai.carabas@gmail.com> 5*47e07394SAndrew Turner * All rights reserved. 6*47e07394SAndrew Turner * 7*47e07394SAndrew Turner * Redistribution and use in source and binary forms, with or without 8*47e07394SAndrew Turner * modification, are permitted provided that the following conditions 9*47e07394SAndrew Turner * are met: 10*47e07394SAndrew Turner * 1. Redistributions of source code must retain the above copyright 11*47e07394SAndrew Turner * notice, this list of conditions and the following disclaimer. 12*47e07394SAndrew Turner * 2. Redistributions in binary form must reproduce the above copyright 13*47e07394SAndrew Turner * notice, this list of conditions and the following disclaimer in the 14*47e07394SAndrew Turner * documentation and/or other materials provided with the distribution. 15*47e07394SAndrew Turner * 16*47e07394SAndrew Turner * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*47e07394SAndrew Turner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*47e07394SAndrew Turner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*47e07394SAndrew Turner * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 20*47e07394SAndrew Turner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*47e07394SAndrew Turner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*47e07394SAndrew Turner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*47e07394SAndrew Turner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*47e07394SAndrew Turner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*47e07394SAndrew Turner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*47e07394SAndrew Turner * SUCH DAMAGE. 27*47e07394SAndrew Turner */ 28*47e07394SAndrew Turner 29*47e07394SAndrew Turner #ifdef _KERNEL 30*47e07394SAndrew Turner #include <sys/param.h> 31*47e07394SAndrew Turner #include <sys/pcpu.h> 32*47e07394SAndrew Turner #include <sys/systm.h> 33*47e07394SAndrew Turner #include <sys/proc.h> 34*47e07394SAndrew Turner 35*47e07394SAndrew Turner #include <vm/vm.h> 36*47e07394SAndrew Turner 37*47e07394SAndrew Turner #include <machine/machdep.h> 38*47e07394SAndrew Turner #include <machine/vmm.h> 39*47e07394SAndrew Turner #else 40*47e07394SAndrew Turner #include <sys/types.h> 41*47e07394SAndrew Turner #include <sys/errno.h> 42*47e07394SAndrew Turner #include <sys/_iovec.h> 43*47e07394SAndrew Turner 44*47e07394SAndrew Turner #include <machine/vmm.h> 45*47e07394SAndrew Turner 46*47e07394SAndrew Turner #include <assert.h> 47*47e07394SAndrew Turner #include <stdio.h> 48*47e07394SAndrew Turner #include <stdlib.h> 49*47e07394SAndrew Turner #include <vmmapi.h> 50*47e07394SAndrew Turner #endif 51*47e07394SAndrew Turner 52*47e07394SAndrew Turner #include <machine/vmm_instruction_emul.h> 53*47e07394SAndrew Turner 54*47e07394SAndrew Turner int 55*47e07394SAndrew Turner vmm_emulate_instruction(struct vcpu *vcpu, uint64_t gpa, struct vie *vie, 56*47e07394SAndrew Turner struct vm_guest_paging *paging __unused, mem_region_read_t memread, 57*47e07394SAndrew Turner mem_region_write_t memwrite, void *memarg) 58*47e07394SAndrew Turner { 59*47e07394SAndrew Turner uint64_t val; 60*47e07394SAndrew Turner int error; 61*47e07394SAndrew Turner 62*47e07394SAndrew Turner if (vie->dir == VM_DIR_READ) { 63*47e07394SAndrew Turner error = memread(vcpu, gpa, &val, vie->access_size, memarg); 64*47e07394SAndrew Turner if (error) 65*47e07394SAndrew Turner goto out; 66*47e07394SAndrew Turner error = vm_set_register(vcpu, vie->reg, val); 67*47e07394SAndrew Turner } else { 68*47e07394SAndrew Turner error = vm_get_register(vcpu, vie->reg, &val); 69*47e07394SAndrew Turner if (error) 70*47e07394SAndrew Turner goto out; 71*47e07394SAndrew Turner /* Mask any unneeded bits from the register */ 72*47e07394SAndrew Turner if (vie->access_size < 8) 73*47e07394SAndrew Turner val &= (1ul << (vie->access_size * 8)) - 1; 74*47e07394SAndrew Turner error = memwrite(vcpu, gpa, val, vie->access_size, memarg); 75*47e07394SAndrew Turner } 76*47e07394SAndrew Turner 77*47e07394SAndrew Turner out: 78*47e07394SAndrew Turner return (error); 79*47e07394SAndrew Turner } 80*47e07394SAndrew Turner 81*47e07394SAndrew Turner int 82*47e07394SAndrew Turner vmm_emulate_register(struct vcpu *vcpu, struct vre *vre, reg_read_t regread, 83*47e07394SAndrew Turner reg_write_t regwrite, void *regarg) 84*47e07394SAndrew Turner { 85*47e07394SAndrew Turner uint64_t val; 86*47e07394SAndrew Turner int error; 87*47e07394SAndrew Turner 88*47e07394SAndrew Turner if (vre->dir == VM_DIR_READ) { 89*47e07394SAndrew Turner error = regread(vcpu, &val, regarg); 90*47e07394SAndrew Turner if (error) 91*47e07394SAndrew Turner goto out; 92*47e07394SAndrew Turner error = vm_set_register(vcpu, vre->reg, val); 93*47e07394SAndrew Turner } else { 94*47e07394SAndrew Turner error = vm_get_register(vcpu, vre->reg, &val); 95*47e07394SAndrew Turner if (error) 96*47e07394SAndrew Turner goto out; 97*47e07394SAndrew Turner error = regwrite(vcpu, val, regarg); 98*47e07394SAndrew Turner } 99*47e07394SAndrew Turner 100*47e07394SAndrew Turner out: 101*47e07394SAndrew Turner return (error); 102*47e07394SAndrew Turner } 103