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326 lines
8.4 KiB
C
326 lines
8.4 KiB
C
/*
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* Copyright (C) 2016 Veertu Inc,
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HVF_X86_DECODE_H
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#define HVF_X86_DECODE_H
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#include "cpu.h"
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#include "x86.h"
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typedef enum x86_prefix {
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/* group 1 */
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PREFIX_LOCK = 0xf0,
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PREFIX_REPN = 0xf2,
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PREFIX_REP = 0xf3,
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/* group 2 */
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PREFIX_CS_SEG_OVERRIDE = 0x2e,
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PREFIX_SS_SEG_OVERRIDE = 0x36,
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PREFIX_DS_SEG_OVERRIDE = 0x3e,
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PREFIX_ES_SEG_OVERRIDE = 0x26,
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PREFIX_FS_SEG_OVERRIDE = 0x64,
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PREFIX_GS_SEG_OVERRIDE = 0x65,
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/* group 3 */
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PREFIX_OP_SIZE_OVERRIDE = 0x66,
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/* group 4 */
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PREFIX_ADDR_SIZE_OVERRIDE = 0x67,
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PREFIX_REX = 0x40,
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} x86_prefix;
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enum x86_decode_cmd {
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X86_DECODE_CMD_INVL = 0,
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X86_DECODE_CMD_PUSH,
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X86_DECODE_CMD_PUSH_SEG,
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X86_DECODE_CMD_POP,
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X86_DECODE_CMD_POP_SEG,
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X86_DECODE_CMD_MOV,
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X86_DECODE_CMD_MOVSX,
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X86_DECODE_CMD_MOVZX,
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X86_DECODE_CMD_CALL_NEAR,
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X86_DECODE_CMD_CALL_NEAR_ABS_INDIRECT,
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X86_DECODE_CMD_CALL_FAR_ABS_INDIRECT,
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X86_DECODE_CMD_CALL_FAR,
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X86_DECODE_RET_NEAR,
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X86_DECODE_RET_FAR,
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X86_DECODE_CMD_ADD,
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X86_DECODE_CMD_OR,
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X86_DECODE_CMD_ADC,
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X86_DECODE_CMD_SBB,
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X86_DECODE_CMD_AND,
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X86_DECODE_CMD_SUB,
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X86_DECODE_CMD_XOR,
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X86_DECODE_CMD_CMP,
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X86_DECODE_CMD_INC,
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X86_DECODE_CMD_DEC,
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X86_DECODE_CMD_TST,
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X86_DECODE_CMD_NOT,
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X86_DECODE_CMD_NEG,
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X86_DECODE_CMD_JMP_NEAR,
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X86_DECODE_CMD_JMP_NEAR_ABS_INDIRECT,
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X86_DECODE_CMD_JMP_FAR,
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X86_DECODE_CMD_JMP_FAR_ABS_INDIRECT,
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X86_DECODE_CMD_LEA,
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X86_DECODE_CMD_JXX,
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X86_DECODE_CMD_JCXZ,
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X86_DECODE_CMD_SETXX,
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X86_DECODE_CMD_MOV_TO_SEG,
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X86_DECODE_CMD_MOV_FROM_SEG,
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X86_DECODE_CMD_CLI,
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X86_DECODE_CMD_STI,
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X86_DECODE_CMD_CLD,
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X86_DECODE_CMD_STD,
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X86_DECODE_CMD_STC,
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X86_DECODE_CMD_CLC,
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X86_DECODE_CMD_OUT,
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X86_DECODE_CMD_IN,
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X86_DECODE_CMD_INS,
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X86_DECODE_CMD_OUTS,
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X86_DECODE_CMD_LIDT,
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X86_DECODE_CMD_SIDT,
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X86_DECODE_CMD_LGDT,
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X86_DECODE_CMD_SGDT,
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X86_DECODE_CMD_SMSW,
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X86_DECODE_CMD_LMSW,
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X86_DECODE_CMD_RDTSCP,
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X86_DECODE_CMD_INVLPG,
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X86_DECODE_CMD_MOV_TO_CR,
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X86_DECODE_CMD_MOV_FROM_CR,
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X86_DECODE_CMD_MOV_TO_DR,
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X86_DECODE_CMD_MOV_FROM_DR,
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X86_DECODE_CMD_PUSHF,
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X86_DECODE_CMD_POPF,
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X86_DECODE_CMD_CPUID,
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X86_DECODE_CMD_ROL,
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X86_DECODE_CMD_ROR,
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X86_DECODE_CMD_RCL,
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X86_DECODE_CMD_RCR,
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X86_DECODE_CMD_SHL,
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X86_DECODE_CMD_SAL,
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X86_DECODE_CMD_SHR,
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X86_DECODE_CMD_SHRD,
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X86_DECODE_CMD_SHLD,
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X86_DECODE_CMD_SAR,
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X86_DECODE_CMD_DIV,
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X86_DECODE_CMD_IDIV,
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X86_DECODE_CMD_MUL,
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X86_DECODE_CMD_IMUL_3,
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X86_DECODE_CMD_IMUL_2,
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X86_DECODE_CMD_IMUL_1,
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X86_DECODE_CMD_MOVS,
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X86_DECODE_CMD_CMPS,
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X86_DECODE_CMD_SCAS,
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X86_DECODE_CMD_LODS,
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X86_DECODE_CMD_STOS,
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X86_DECODE_CMD_BSWAP,
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X86_DECODE_CMD_XCHG,
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X86_DECODE_CMD_RDTSC,
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X86_DECODE_CMD_RDMSR,
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X86_DECODE_CMD_WRMSR,
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X86_DECODE_CMD_ENTER,
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X86_DECODE_CMD_LEAVE,
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X86_DECODE_CMD_BT,
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X86_DECODE_CMD_BTS,
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X86_DECODE_CMD_BTC,
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X86_DECODE_CMD_BTR,
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X86_DECODE_CMD_BSF,
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X86_DECODE_CMD_BSR,
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X86_DECODE_CMD_IRET,
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X86_DECODE_CMD_INT,
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X86_DECODE_CMD_POPA,
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X86_DECODE_CMD_PUSHA,
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X86_DECODE_CMD_CWD,
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X86_DECODE_CMD_CBW,
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X86_DECODE_CMD_DAS,
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X86_DECODE_CMD_AAD,
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X86_DECODE_CMD_AAM,
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X86_DECODE_CMD_AAS,
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X86_DECODE_CMD_LOOP,
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X86_DECODE_CMD_SLDT,
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X86_DECODE_CMD_STR,
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X86_DECODE_CMD_LLDT,
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X86_DECODE_CMD_LTR,
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X86_DECODE_CMD_VERR,
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X86_DECODE_CMD_VERW,
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X86_DECODE_CMD_SAHF,
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X86_DECODE_CMD_LAHF,
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X86_DECODE_CMD_WBINVD,
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X86_DECODE_CMD_LDS,
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X86_DECODE_CMD_LSS,
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X86_DECODE_CMD_LES,
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X86_DECODE_XMD_LGS,
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X86_DECODE_CMD_LFS,
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X86_DECODE_CMD_CMC,
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X86_DECODE_CMD_XLAT,
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X86_DECODE_CMD_NOP,
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X86_DECODE_CMD_CMOV,
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X86_DECODE_CMD_CLTS,
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X86_DECODE_CMD_XADD,
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X86_DECODE_CMD_HLT,
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X86_DECODE_CMD_CMPXCHG8B,
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X86_DECODE_CMD_CMPXCHG,
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X86_DECODE_CMD_POPCNT,
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X86_DECODE_CMD_FNINIT,
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X86_DECODE_CMD_FLD,
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X86_DECODE_CMD_FLDxx,
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X86_DECODE_CMD_FNSTCW,
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X86_DECODE_CMD_FNSTSW,
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X86_DECODE_CMD_FNSETPM,
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X86_DECODE_CMD_FSAVE,
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X86_DECODE_CMD_FRSTOR,
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X86_DECODE_CMD_FXSAVE,
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X86_DECODE_CMD_FXRSTOR,
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X86_DECODE_CMD_FDIV,
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X86_DECODE_CMD_FMUL,
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X86_DECODE_CMD_FSUB,
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X86_DECODE_CMD_FADD,
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X86_DECODE_CMD_EMMS,
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X86_DECODE_CMD_MFENCE,
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X86_DECODE_CMD_SFENCE,
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X86_DECODE_CMD_LFENCE,
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X86_DECODE_CMD_PREFETCH,
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X86_DECODE_CMD_CLFLUSH,
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X86_DECODE_CMD_FST,
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X86_DECODE_CMD_FABS,
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X86_DECODE_CMD_FUCOM,
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X86_DECODE_CMD_FUCOMI,
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X86_DECODE_CMD_FLDCW,
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X86_DECODE_CMD_FXCH,
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X86_DECODE_CMD_FCHS,
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X86_DECODE_CMD_FCMOV,
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X86_DECODE_CMD_FRNDINT,
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X86_DECODE_CMD_FXAM,
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X86_DECODE_CMD_LAST,
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};
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const char *decode_cmd_to_string(enum x86_decode_cmd cmd);
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typedef struct x86_modrm {
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union {
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uint8_t modrm;
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struct {
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uint8_t rm:3;
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uint8_t reg:3;
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uint8_t mod:2;
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};
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};
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} __attribute__ ((__packed__)) x86_modrm;
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typedef struct x86_sib {
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union {
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uint8_t sib;
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struct {
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uint8_t base:3;
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uint8_t index:3;
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uint8_t scale:2;
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};
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};
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} __attribute__ ((__packed__)) x86_sib;
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typedef struct x86_rex {
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union {
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uint8_t rex;
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struct {
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uint8_t b:1;
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uint8_t x:1;
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uint8_t r:1;
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uint8_t w:1;
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uint8_t unused:4;
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};
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};
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} __attribute__ ((__packed__)) x86_rex;
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typedef enum x86_var_type {
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X86_VAR_IMMEDIATE,
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X86_VAR_OFFSET,
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X86_VAR_REG,
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X86_VAR_RM,
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/* for floating point computations */
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X87_VAR_REG,
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X87_VAR_FLOATP,
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X87_VAR_INTP,
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X87_VAR_BYTEP,
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} x86_var_type;
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typedef struct x86_decode_op {
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enum x86_var_type type;
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int size;
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int reg;
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target_ulong val;
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target_ulong ptr;
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} x86_decode_op;
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typedef struct x86_decode {
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int len;
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uint8_t opcode[4];
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uint8_t opcode_len;
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enum x86_decode_cmd cmd;
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int addressing_size;
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int operand_size;
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int lock;
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int rep;
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int op_size_override;
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int addr_size_override;
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int segment_override;
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int control_change_inst;
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bool fwait;
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bool fpop_stack;
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bool frev;
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uint32_t displacement;
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uint8_t displacement_size;
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struct x86_rex rex;
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bool is_modrm;
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bool sib_present;
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struct x86_sib sib;
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struct x86_modrm modrm;
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struct x86_decode_op op[4];
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bool is_fpu;
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uint32_t flags_mask;
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} x86_decode;
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uint64_t sign(uint64_t val, int size);
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uint32_t decode_instruction(CPUX86State *env, struct x86_decode *decode);
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target_ulong get_reg_ref(CPUX86State *env, int reg, int rex_present,
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int is_extended, int size);
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target_ulong get_reg_val(CPUX86State *env, int reg, int rex_present,
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int is_extended, int size);
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void calc_modrm_operand(CPUX86State *env, struct x86_decode *decode,
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struct x86_decode_op *op);
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target_ulong decode_linear_addr(CPUX86State *env, struct x86_decode *decode,
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target_ulong addr, enum X86Seg seg);
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void init_decoder(void);
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void calc_modrm_operand16(CPUX86State *env, struct x86_decode *decode,
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struct x86_decode_op *op);
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void calc_modrm_operand32(CPUX86State *env, struct x86_decode *decode,
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struct x86_decode_op *op);
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void calc_modrm_operand64(CPUX86State *env, struct x86_decode *decode,
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struct x86_decode_op *op);
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void set_addressing_size(CPUX86State *env, struct x86_decode *decode);
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void set_operand_size(CPUX86State *env, struct x86_decode *decode);
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#endif
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