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sys/arm64/vmm/vmm_instruction_emul.c
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| /* | |||||
| * Copyright (C) 2015-2021 Mihai Carabas <mihai.carabas@gmail.com> | |||||
| * Copyright (C) 2017-2019 Alexandru Elisei <alexandru.elisei@gmail.com> | |||||
| * Copyright (C) 2017-2021 Darius Mihai <darius.mihai.m@gmail.com> | |||||
| * Copyright (C) 2019-2021 Andrei Martin <andrei.cos.martin@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) | |||||
| { | |||||
| uint64_t val; | |||||
| int error; | |||||
| if (vie->dir == VM_DIR_READ) { | |||||
| error = memread(vm, vcpuid, gpa, &val, vie->access_size, memarg); | |||||
| if (error) | |||||
| goto out; | |||||
| error = vm_set_register(vm, vcpuid, vie->reg, val); | |||||
| } else { | |||||
| error = vm_get_register(vm, vcpuid, vie->reg, &val); | |||||
| if (error) | |||||
| goto out; | |||||
| error = memwrite(vm, vcpuid, gpa, val, vie->access_size, memarg); | |||||
| } | |||||
| out: | |||||
| return (error); | |||||
| } | |||||
| int | |||||
| vmm_emulate_register(void *vm, int vcpuid, struct vre *vre, reg_read_t regread, | |||||
| reg_write_t regwrite, void *regarg) | |||||
| { | |||||
| uint64_t val; | |||||
| int error; | |||||
| if (vre->dir == VM_DIR_READ) { | |||||
| error = regread(vm, vcpuid, &val, regarg); | |||||
| if (error) | |||||
| goto out; | |||||
| error = vm_set_register(vm, vcpuid, vre->reg, val); | |||||
| } else { | |||||
| error = vm_get_register(vm, vcpuid, vre->reg, &val); | |||||
| if (error) | |||||
| goto out; | |||||
| error = regwrite(vm, vcpuid, val, regarg); | |||||
| } | |||||
| out: | |||||
| return (error); | |||||
| } | |||||