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8205c9a482
For data struct type struct vie, emul_ctxt, its name is identical with variable name in the same scope. This MISRA C violation is detected by static analysis tool. According to naming convention rule: If the data structure type is used by only one module and its name meaning is simplistic, its name needs prefix shorten module name. Follow the same rule, data structure name "vie_op" needs to be renamed; The following updates are made in this patch: struct vie-->struct instr_emul_vie struct vie_op-->struct instr_emul_vie_op struct emul_ctxt-->struct instr_emul_ctxt Signed-off-by: Xiangyang Wu <xiangyang.wu@linux.intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
/*-
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* Copyright (c) 2012 NetApp, Inc.
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* Copyright (c) 2017 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _VMM_INSTRUCTION_EMUL_H_
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#define _VMM_INSTRUCTION_EMUL_H_
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#include "instr_emul_wrapper.h"
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/*
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* Callback functions to read and write memory regions.
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*/
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typedef int (*mem_region_read_t)(struct vcpu *vcpu, uint64_t gpa,
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uint64_t *rval, uint8_t rsize, void *arg);
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typedef int (*mem_region_write_t)(struct vcpu *vcpu, uint64_t gpa,
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uint64_t wval, uint8_t wsize, void *arg);
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/*
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* Emulate the decoded 'vie' instruction.
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*
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* The callbacks 'mrr' and 'mrw' emulate reads and writes to the memory region
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* containing 'gpa'. 'mrarg' is an opaque argument that is passed into the
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* callback functions.
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*
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* 'void *vm' should be 'struct vm *' when called from kernel context and
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* 'struct vmctx *' when called from user context.
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* s
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*/
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int vmm_emulate_instruction(struct vcpu *vcpu, uint64_t gpa, struct instr_emul_vie *vie,
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struct vm_guest_paging *paging, mem_region_read_t mrr,
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mem_region_write_t mrw, void *mrarg);
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int vie_update_register(struct vcpu *vcpu, enum cpu_reg_name reg,
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uint64_t val_arg, uint8_t size);
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/*
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* Returns 1 if an alignment check exception should be injected and 0 otherwise.
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*/
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int vie_alignment_check(uint8_t cpl, uint8_t operand_size, uint64_t cr0,
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uint64_t rflags, uint64_t gla);
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/* Returns 1 if the 'gla' is not canonical and 0 otherwise. */
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int vie_canonical_check(enum vm_cpu_mode cpu_mode, uint64_t gla);
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uint64_t vie_size2mask(uint8_t size);
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int vie_calculate_gla(enum vm_cpu_mode cpu_mode, enum cpu_reg_name seg,
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struct seg_desc *desc, uint64_t offset_arg, uint8_t length_arg,
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uint8_t addrsize, uint32_t prot, uint64_t *gla);
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int vie_init(struct instr_emul_vie *vie, struct vcpu *vcpu);
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/*
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* Decode the instruction fetched into 'vie' so it can be emulated.
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*
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* 'gla' is the guest linear address provided by the hardware assist
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* that caused the nested page table fault. It is used to verify that
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* the software instruction decoding is in agreement with the hardware.
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*
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* Some hardware assists do not provide the 'gla' to the hypervisor.
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* To skip the 'gla' verification for this or any other reason pass
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* in VIE_INVALID_GLA instead.
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*/
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#define VIE_INVALID_GLA (1UL << 63) /* a non-canonical address */
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int
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__decode_instruction(enum vm_cpu_mode cpu_mode, bool cs_d, struct instr_emul_vie *vie);
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int emulate_instruction(struct vcpu *vcpu);
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int decode_instruction(struct vcpu *vcpu);
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#endif /* _VMM_INSTRUCTION_EMUL_H_ */
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