70593114cd
page table fault. Use this when fetching the instruction bytes from the guest memory. Also modify the lapic_mmio() API so that a decoded instruction is fed into it instead of having it fetch the instruction bytes from the guest. This is useful for hardware assists like SVM that provide the faulting instruction as part of the vmexit.
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/*-
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* Copyright (c) 2012 NetApp, Inc.
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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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enum vie_op_size {
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VIE_OP_SIZE_32BIT, /* default */
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VIE_OP_SIZE_64BIT,
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VIE_OP_SIZE_8BIT
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};
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#define VIE_INST_SIZE 15
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struct vie {
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uint8_t inst[VIE_INST_SIZE];
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uint8_t rex_w:1,
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rex_r:1,
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rex_x:1,
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rex_b:1;
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uint8_t mod:2,
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reg:4,
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rm:4;
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uint8_t opcode_byte;
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uint16_t opcode_flags;
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uint8_t disp_bytes;
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uint8_t imm_bytes;
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int num_valid;
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int num_processed;
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enum vm_reg_name base_register;
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enum vm_reg_name index_register;
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enum vm_reg_name operand_register;
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int op_size;
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int64_t displacement;
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int64_t immediate;
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};
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#define VIE_F_HAS_MODRM (1 << 0)
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#define VIE_F_FROM_RM (1 << 1)
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#define VIE_F_FROM_REG (1 << 2)
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#define VIE_F_TO_RM (1 << 3)
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#define VIE_F_TO_REG (1 << 4)
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#define VIE_F_FROM_IMM (1 << 5)
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#define VIE_MOD_INDIRECT 0
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#define VIE_MOD_INDIRECT_DISP8 1
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#define VIE_MOD_INDIRECT_DISP32 2
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#define VIE_MOD_DIRECT 3
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#define VIE_RM_SIB 4
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#define VIE_RM_DISP32 5
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struct vm;
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int vmm_fetch_instruction(struct vm *vm, uint64_t rip, int inst_length,
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uint64_t cr3, struct vie *vie);
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int vmm_decode_instruction(struct vie *vie);
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#endif
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