Differential D26976 Diff 78821 sys/arm/vmm/vmm_instruction_emul.c

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sys/arm/vmm/vmm_instruction_emul.c

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				/*
				* Copyright (C) 2015 Mihai Carabas <mihai.carabas@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, 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
				*/

				#ifdef _KERNEL
				#include <sys/param.h>
				#include <sys/pcpu.h>
				#include <sys/systm.h>
				#include <sys/proc.h>

				#include <vm/vm.h>

				#include <machine/vmm.h>

				#else
				#include <sys/types.h>
				#include <sys/errno.h>
				#include <sys/_iovec.h>
				#include <stdio.h>
				#include <stdlib.h>

				#include <machine/vmm.h>

				#include <assert.h>
				#include <vmmapi.h>
				#endif

				#include <machine/vmm_instruction_emul.h>

				int
				vmm_emulate_instruction(void vm, int vcpuid, uint64_t gpa, struct vie vie,
				mem_region_read_t memread, mem_region_write_t memwrite, void *memarg)
				{
				int error;
				uint64_t val;

				if(vie->dir) {
				error = vm_get_register(vm, vcpuid, vie->reg, &val);
				if (error)
				goto out;

				error = memwrite(vm, vcpuid, gpa, val, vie->access_size, memarg);
				} else {
				error = memread(vm, vcpuid, gpa, &val, vie->access_size, memarg);
				if (error)
				goto out;
				error = vm_set_register(vm, vcpuid, vie->reg, val);
				}
				out:
				return (error);
				}