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sys/arm64/include/vmm_instruction_emul.h
- This file was added.
| /* | |||||
| * 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. | |||||
| */ | |||||
| #ifndef _VMM_INSTRUCTION_EMUL_H_ | |||||
| #define _VMM_INSTRUCTION_EMUL_H_ | |||||
| /* | |||||
| * Callback functions to read and write memory regions. | |||||
| */ | |||||
| typedef int (*mem_region_read_t)(void *vm, int cpuid, uint64_t gpa, | |||||
| uint64_t *rval, int rsize, void *arg); | |||||
| typedef int (*mem_region_write_t)(void *vm, int cpuid, uint64_t gpa, | |||||
| uint64_t wval, int wsize, void *arg); | |||||
| /* | |||||
| * Callback functions to read and write registers. | |||||
| */ | |||||
| typedef int (*reg_read_t)(void *vm, int cpuid, uint64_t *rval, void *arg); | |||||
| typedef int (*reg_write_t)(void *vm, int cpuid, uint64_t wval, void *arg); | |||||
| /* | |||||
| * Emulate the decoded 'vie' instruction when it contains a memory operation. | |||||
| * | |||||
| * The callbacks 'mrr' and 'mrw' emulate reads and writes to the memory region | |||||
| * containing 'gpa'. 'mrarg' is an opaque argument that is passed into the | |||||
| * callback functions. | |||||
| * | |||||
| * 'void *vm' should be 'struct vm *' when called from kernel context and | |||||
| * 'struct vmctx *' when called from user context. | |||||
| * | |||||
| */ | |||||
| int vmm_emulate_instruction(void *vm, int cpuid, uint64_t gpa, struct vie *vie, | |||||
| mem_region_read_t mrr, mem_region_write_t mrw, void *mrarg); | |||||
| /* | |||||
| * Emulate the decoded 'vre' instruction when it contains a register access. | |||||
| * | |||||
| * The callbacks 'regread' and 'regwrite' emulate reads and writes to the | |||||
| * register from 'vie'. 'regarg' is an opaque argument that is passed into the | |||||
| * callback functions. | |||||
| * | |||||
| * 'void *vm' should be 'struct vm *' when called from kernel context and | |||||
| * 'struct vmctx *' when called from user context. | |||||
| * | |||||
| */ | |||||
| int vmm_emulate_register(void *vm, int vcpuid, struct vre *vre, reg_read_t regread, | |||||
| reg_write_t regwrite, void *regarg); | |||||
| #endif /* _VMM_INSTRUCTION_EMUL_H_ */ | |||||