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