/** @file * DIS - The VirtualBox Disassembler. */ /* * Copyright (C) 2006-2022 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef VBOX_INCLUDED_dis_h #define VBOX_INCLUDED_dis_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include #include RT_C_DECLS_BEGIN /** @defgroup grp_dis VBox Disassembler * @{ */ /** @name Prefix byte flags (DISSTATE::fPrefix). * @{ */ #define DISPREFIX_NONE UINT8_C(0x00) /** non-default address size. */ #define DISPREFIX_ADDRSIZE UINT8_C(0x01) /** non-default operand size. */ #define DISPREFIX_OPSIZE UINT8_C(0x02) /** lock prefix. */ #define DISPREFIX_LOCK UINT8_C(0x04) /** segment prefix. */ #define DISPREFIX_SEG UINT8_C(0x08) /** rep(e) prefix (not a prefix, but we'll treat is as one). */ #define DISPREFIX_REP UINT8_C(0x10) /** rep(e) prefix (not a prefix, but we'll treat is as one). */ #define DISPREFIX_REPNE UINT8_C(0x20) /** REX prefix (64 bits) */ #define DISPREFIX_REX UINT8_C(0x40) /** @} */ /** @name VEX.Lvvvv prefix destination register flag. * @{ */ #define VEX_LEN256 UINT8_C(0x01) #define VEXREG_IS256B(x) ((x) & VEX_LEN256) /* Convert second byte of VEX prefix to internal format */ #define VEX_2B2INT(x) ((((x) >> 2) & 0x1f)) #define VEX_HAS_REX_R(x) (!((x) & 0x80)) #define DISPREFIX_VEX_FLAG_W UINT8_C(0x01) /** @} */ /** @name 64 bits prefix byte flags (DISSTATE::fRexPrefix). * Requires VBox/disopcode.h. * @{ */ #define DISPREFIX_REX_OP_2_FLAGS(a) (a - OP_PARM_REX_START) /*#define DISPREFIX_REX_FLAGS DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX) - 0, which is no flag */ #define DISPREFIX_REX_FLAGS_B DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_B) #define DISPREFIX_REX_FLAGS_X DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_X) #define DISPREFIX_REX_FLAGS_XB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_XB) #define DISPREFIX_REX_FLAGS_R DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_R) #define DISPREFIX_REX_FLAGS_RB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RB) #define DISPREFIX_REX_FLAGS_RX DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RX) #define DISPREFIX_REX_FLAGS_RXB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RXB) #define DISPREFIX_REX_FLAGS_W DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_W) #define DISPREFIX_REX_FLAGS_WB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WB) #define DISPREFIX_REX_FLAGS_WX DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WX) #define DISPREFIX_REX_FLAGS_WXB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WXB) #define DISPREFIX_REX_FLAGS_WR DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WR) #define DISPREFIX_REX_FLAGS_WRB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRB) #define DISPREFIX_REX_FLAGS_WRX DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRX) #define DISPREFIX_REX_FLAGS_WRXB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRXB) /** @} */ AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_B)); AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_X)); AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_W)); AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_R)); /** @name Operand type (DISOPCODE::fOpType). * @{ */ #define DISOPTYPE_INVALID RT_BIT_32(0) #define DISOPTYPE_HARMLESS RT_BIT_32(1) #define DISOPTYPE_CONTROLFLOW RT_BIT_32(2) #define DISOPTYPE_POTENTIALLY_DANGEROUS RT_BIT_32(3) #define DISOPTYPE_DANGEROUS RT_BIT_32(4) #define DISOPTYPE_PORTIO RT_BIT_32(5) #define DISOPTYPE_PRIVILEGED RT_BIT_32(6) #define DISOPTYPE_PRIVILEGED_NOTRAP RT_BIT_32(7) #define DISOPTYPE_UNCOND_CONTROLFLOW RT_BIT_32(8) #define DISOPTYPE_RELATIVE_CONTROLFLOW RT_BIT_32(9) #define DISOPTYPE_COND_CONTROLFLOW RT_BIT_32(10) #define DISOPTYPE_INTERRUPT RT_BIT_32(11) #define DISOPTYPE_ILLEGAL RT_BIT_32(12) #define DISOPTYPE_RRM_DANGEROUS RT_BIT_32(14) /**< Some additional dangerous ones when recompiling raw r0. */ #define DISOPTYPE_RRM_DANGEROUS_16 RT_BIT_32(15) /**< Some additional dangerous ones when recompiling 16-bit raw r0. */ #define DISOPTYPE_RRM_MASK (DISOPTYPE_RRM_DANGEROUS | DISOPTYPE_RRM_DANGEROUS_16) #define DISOPTYPE_INHIBIT_IRQS RT_BIT_32(16) /**< Will or can inhibit irqs (sti, pop ss, mov ss) */ #define DISOPTYPE_PORTIO_READ RT_BIT_32(17) #define DISOPTYPE_PORTIO_WRITE RT_BIT_32(18) #define DISOPTYPE_INVALID_64 RT_BIT_32(19) /**< Invalid in 64 bits mode */ #define DISOPTYPE_ONLY_64 RT_BIT_32(20) /**< Only valid in 64 bits mode */ #define DISOPTYPE_DEFAULT_64_OP_SIZE RT_BIT_32(21) /**< Default 64 bits operand size */ #define DISOPTYPE_FORCED_64_OP_SIZE RT_BIT_32(22) /**< Forced 64 bits operand size; regardless of prefix bytes */ #define DISOPTYPE_REXB_EXTENDS_OPREG RT_BIT_32(23) /**< REX.B extends the register field in the opcode byte */ #define DISOPTYPE_MOD_FIXED_11 RT_BIT_32(24) /**< modrm.mod is always 11b */ #define DISOPTYPE_FORCED_32_OP_SIZE_X86 RT_BIT_32(25) /**< Forced 32 bits operand size; regardless of prefix bytes (only in 16 & 32 bits mode!) */ #define DISOPTYPE_AVX RT_BIT_32(28) /**< AVX,AVX2,++ instruction. Not implemented yet! */ #define DISOPTYPE_SSE RT_BIT_32(29) /**< SSE,SSE2,SSE3,SSE4,++ instruction. Not implemented yet! */ #define DISOPTYPE_MMX RT_BIT_32(30) /**< MMX,MMXExt,3DNow,++ instruction. Not implemented yet! */ #define DISOPTYPE_FPU RT_BIT_32(31) /**< FPU instruction. Not implemented yet! */ #define DISOPTYPE_ALL UINT32_C(0xffffffff) /** @} */ /** @name Parameter usage flags. * @{ */ #define DISUSE_BASE RT_BIT_64(0) #define DISUSE_INDEX RT_BIT_64(1) #define DISUSE_SCALE RT_BIT_64(2) #define DISUSE_REG_GEN8 RT_BIT_64(3) #define DISUSE_REG_GEN16 RT_BIT_64(4) #define DISUSE_REG_GEN32 RT_BIT_64(5) #define DISUSE_REG_GEN64 RT_BIT_64(6) #define DISUSE_REG_FP RT_BIT_64(7) #define DISUSE_REG_MMX RT_BIT_64(8) #define DISUSE_REG_XMM RT_BIT_64(9) #define DISUSE_REG_YMM RT_BIT_64(10) #define DISUSE_REG_CR RT_BIT_64(11) #define DISUSE_REG_DBG RT_BIT_64(12) #define DISUSE_REG_SEG RT_BIT_64(13) #define DISUSE_REG_TEST RT_BIT_64(14) #define DISUSE_DISPLACEMENT8 RT_BIT_64(15) #define DISUSE_DISPLACEMENT16 RT_BIT_64(16) #define DISUSE_DISPLACEMENT32 RT_BIT_64(17) #define DISUSE_DISPLACEMENT64 RT_BIT_64(18) #define DISUSE_RIPDISPLACEMENT32 RT_BIT_64(19) #define DISUSE_IMMEDIATE8 RT_BIT_64(20) #define DISUSE_IMMEDIATE8_REL RT_BIT_64(21) #define DISUSE_IMMEDIATE16 RT_BIT_64(22) #define DISUSE_IMMEDIATE16_REL RT_BIT_64(23) #define DISUSE_IMMEDIATE32 RT_BIT_64(24) #define DISUSE_IMMEDIATE32_REL RT_BIT_64(25) #define DISUSE_IMMEDIATE64 RT_BIT_64(26) #define DISUSE_IMMEDIATE64_REL RT_BIT_64(27) #define DISUSE_IMMEDIATE_ADDR_0_32 RT_BIT_64(28) #define DISUSE_IMMEDIATE_ADDR_16_32 RT_BIT_64(29) #define DISUSE_IMMEDIATE_ADDR_0_16 RT_BIT_64(30) #define DISUSE_IMMEDIATE_ADDR_16_16 RT_BIT_64(31) /** DS:ESI */ #define DISUSE_POINTER_DS_BASED RT_BIT_64(32) /** ES:EDI */ #define DISUSE_POINTER_ES_BASED RT_BIT_64(33) #define DISUSE_IMMEDIATE16_SX8 RT_BIT_64(34) #define DISUSE_IMMEDIATE32_SX8 RT_BIT_64(35) #define DISUSE_IMMEDIATE64_SX8 RT_BIT_64(36) /** Mask of immediate use flags. */ #define DISUSE_IMMEDIATE ( DISUSE_IMMEDIATE8 \ | DISUSE_IMMEDIATE16 \ | DISUSE_IMMEDIATE32 \ | DISUSE_IMMEDIATE64 \ | DISUSE_IMMEDIATE8_REL \ | DISUSE_IMMEDIATE16_REL \ | DISUSE_IMMEDIATE32_REL \ | DISUSE_IMMEDIATE64_REL \ | DISUSE_IMMEDIATE_ADDR_0_32 \ | DISUSE_IMMEDIATE_ADDR_16_32 \ | DISUSE_IMMEDIATE_ADDR_0_16 \ | DISUSE_IMMEDIATE_ADDR_16_16 \ | DISUSE_IMMEDIATE16_SX8 \ | DISUSE_IMMEDIATE32_SX8 \ | DISUSE_IMMEDIATE64_SX8) /** Check if the use flags indicates an effective address. */ #define DISUSE_IS_EFFECTIVE_ADDR(a_fUseFlags) (!!( (a_fUseFlags) \ & ( DISUSE_BASE \ | DISUSE_INDEX \ | DISUSE_DISPLACEMENT32 \ | DISUSE_DISPLACEMENT64 \ | DISUSE_DISPLACEMENT16 \ | DISUSE_DISPLACEMENT8 \ | DISUSE_RIPDISPLACEMENT32) )) /** @} */ /** @name 64-bit general register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg. * @note Safe to assume same values as the 16-bit and 32-bit general registers. * @{ */ #define DISGREG_RAX UINT8_C(0) #define DISGREG_RCX UINT8_C(1) #define DISGREG_RDX UINT8_C(2) #define DISGREG_RBX UINT8_C(3) #define DISGREG_RSP UINT8_C(4) #define DISGREG_RBP UINT8_C(5) #define DISGREG_RSI UINT8_C(6) #define DISGREG_RDI UINT8_C(7) #define DISGREG_R8 UINT8_C(8) #define DISGREG_R9 UINT8_C(9) #define DISGREG_R10 UINT8_C(10) #define DISGREG_R11 UINT8_C(11) #define DISGREG_R12 UINT8_C(12) #define DISGREG_R13 UINT8_C(13) #define DISGREG_R14 UINT8_C(14) #define DISGREG_R15 UINT8_C(15) /** @} */ /** @name 32-bit general register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg. * @note Safe to assume same values as the 16-bit and 64-bit general registers. * @{ */ #define DISGREG_EAX UINT8_C(0) #define DISGREG_ECX UINT8_C(1) #define DISGREG_EDX UINT8_C(2) #define DISGREG_EBX UINT8_C(3) #define DISGREG_ESP UINT8_C(4) #define DISGREG_EBP UINT8_C(5) #define DISGREG_ESI UINT8_C(6) #define DISGREG_EDI UINT8_C(7) #define DISGREG_R8D UINT8_C(8) #define DISGREG_R9D UINT8_C(9) #define DISGREG_R10D UINT8_C(10) #define DISGREG_R11D UINT8_C(11) #define DISGREG_R12D UINT8_C(12) #define DISGREG_R13D UINT8_C(13) #define DISGREG_R14D UINT8_C(14) #define DISGREG_R15D UINT8_C(15) /** @} */ /** @name 16-bit general register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg. * @note Safe to assume same values as the 32-bit and 64-bit general registers. * @{ */ #define DISGREG_AX UINT8_C(0) #define DISGREG_CX UINT8_C(1) #define DISGREG_DX UINT8_C(2) #define DISGREG_BX UINT8_C(3) #define DISGREG_SP UINT8_C(4) #define DISGREG_BP UINT8_C(5) #define DISGREG_SI UINT8_C(6) #define DISGREG_DI UINT8_C(7) #define DISGREG_R8W UINT8_C(8) #define DISGREG_R9W UINT8_C(9) #define DISGREG_R10W UINT8_C(10) #define DISGREG_R11W UINT8_C(11) #define DISGREG_R12W UINT8_C(12) #define DISGREG_R13W UINT8_C(13) #define DISGREG_R14W UINT8_C(14) #define DISGREG_R15W UINT8_C(15) /** @} */ /** @name 8-bit general register indexes. * This mostly (?) matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg. * @{ */ #define DISGREG_AL UINT8_C(0) #define DISGREG_CL UINT8_C(1) #define DISGREG_DL UINT8_C(2) #define DISGREG_BL UINT8_C(3) #define DISGREG_AH UINT8_C(4) #define DISGREG_CH UINT8_C(5) #define DISGREG_DH UINT8_C(6) #define DISGREG_BH UINT8_C(7) #define DISGREG_R8B UINT8_C(8) #define DISGREG_R9B UINT8_C(9) #define DISGREG_R10B UINT8_C(10) #define DISGREG_R11B UINT8_C(11) #define DISGREG_R12B UINT8_C(12) #define DISGREG_R13B UINT8_C(13) #define DISGREG_R14B UINT8_C(14) #define DISGREG_R15B UINT8_C(15) #define DISGREG_SPL UINT8_C(16) #define DISGREG_BPL UINT8_C(17) #define DISGREG_SIL UINT8_C(18) #define DISGREG_DIL UINT8_C(19) /** @} */ /** @name Segment registerindexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxSegReg. * @{ */ typedef enum { DISSELREG_ES = 0, DISSELREG_CS = 1, DISSELREG_SS = 2, DISSELREG_DS = 3, DISSELREG_FS = 4, DISSELREG_GS = 5, /** End of the valid register index values. */ DISSELREG_END, /** The usual 32-bit paranoia. */ DIS_SEGREG_32BIT_HACK = 0x7fffffff } DISSELREG; /** @} */ /** @name FPU register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxFpuReg. * @{ */ #define DISFPREG_ST0 UINT8_C(0) #define DISFPREG_ST1 UINT8_C(1) #define DISFPREG_ST2 UINT8_C(2) #define DISFPREG_ST3 UINT8_C(3) #define DISFPREG_ST4 UINT8_C(4) #define DISFPREG_ST5 UINT8_C(5) #define DISFPREG_ST6 UINT8_C(6) #define DISFPREG_ST7 UINT8_C(7) /** @} */ /** @name Control register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxCtrlReg. * @{ */ #define DISCREG_CR0 UINT8_C(0) #define DISCREG_CR1 UINT8_C(1) #define DISCREG_CR2 UINT8_C(2) #define DISCREG_CR3 UINT8_C(3) #define DISCREG_CR4 UINT8_C(4) #define DISCREG_CR8 UINT8_C(8) /** @} */ /** @name Debug register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxDbgReg. * @{ */ #define DISDREG_DR0 UINT8_C(0) #define DISDREG_DR1 UINT8_C(1) #define DISDREG_DR2 UINT8_C(2) #define DISDREG_DR3 UINT8_C(3) #define DISDREG_DR4 UINT8_C(4) #define DISDREG_DR5 UINT8_C(5) #define DISDREG_DR6 UINT8_C(6) #define DISDREG_DR7 UINT8_C(7) /** @} */ /** @name MMX register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxMmxReg. * @{ */ #define DISMREG_MMX0 UINT8_C(0) #define DISMREG_MMX1 UINT8_C(1) #define DISMREG_MMX2 UINT8_C(2) #define DISMREG_MMX3 UINT8_C(3) #define DISMREG_MMX4 UINT8_C(4) #define DISMREG_MMX5 UINT8_C(5) #define DISMREG_MMX6 UINT8_C(6) #define DISMREG_MMX7 UINT8_C(7) /** @} */ /** @name SSE register indexes. * This matches the AMD64 register encoding. It is found used in * DISOPPARAM::Base.idxXmmReg. * @{ */ #define DISXREG_XMM0 UINT8_C(0) #define DISXREG_XMM1 UINT8_C(1) #define DISXREG_XMM2 UINT8_C(2) #define DISXREG_XMM3 UINT8_C(3) #define DISXREG_XMM4 UINT8_C(4) #define DISXREG_XMM5 UINT8_C(5) #define DISXREG_XMM6 UINT8_C(6) #define DISXREG_XMM7 UINT8_C(7) /** @} */ /** * Opcode parameter (operand) details. */ typedef struct DISOPPARAM { /** A combination of DISUSE_XXX. */ uint64_t fUse; /** Immediate value or address, applicable if any of the flags included in * DISUSE_IMMEDIATE are set in fUse. */ uint64_t uValue; /** Disposition. */ union { /** 64-bit displacement, applicable if DISUSE_DISPLACEMENT64 is set in fUse. */ int64_t i64; uint64_t u64; /** 32-bit displacement, applicable if DISUSE_DISPLACEMENT32 or * DISUSE_RIPDISPLACEMENT32 is set in fUse. */ int32_t i32; uint32_t u32; /** 16-bit displacement, applicable if DISUSE_DISPLACEMENT16 is set in fUse. */ int32_t i16; uint32_t u16; /** 8-bit displacement, applicable if DISUSE_DISPLACEMENT8 is set in fUse. */ int32_t i8; uint32_t u8; } uDisp; /** The base register from ModR/M or SIB, applicable if DISUSE_BASE is * set in fUse. */ union { /** General register index (DISGREG_XXX), applicable if DISUSE_REG_GEN8, * DISUSE_REG_GEN16, DISUSE_REG_GEN32 or DISUSE_REG_GEN64 is set in fUse. */ uint8_t idxGenReg; /** FPU stack register index (DISFPREG_XXX), applicable if DISUSE_REG_FP is * set in fUse. 1:1 indexes. */ uint8_t idxFpuReg; /** MMX register index (DISMREG_XXX), applicable if DISUSE_REG_MMX is * set in fUse. 1:1 indexes. */ uint8_t idxMmxReg; /** SSE register index (DISXREG_XXX), applicable if DISUSE_REG_XMM is * set in fUse. 1:1 indexes. */ uint8_t idxXmmReg; /** SSE2 register index (DISYREG_XXX), applicable if DISUSE_REG_YMM is * set in fUse. 1:1 indexes. */ uint8_t idxYmmReg; /** Segment register index (DISSELREG_XXX), applicable if DISUSE_REG_SEG is * set in fUse. */ uint8_t idxSegReg; /** Test register, TR0-TR7, present on early IA32 CPUs, applicable if * DISUSE_REG_TEST is set in fUse. No index defines for these. */ uint8_t idxTestReg; /** Control register index (DISCREG_XXX), applicable if DISUSE_REG_CR is * set in fUse. 1:1 indexes. */ uint8_t idxCtrlReg; /** Debug register index (DISDREG_XXX), applicable if DISUSE_REG_DBG is * set in fUse. 1:1 indexes. */ uint8_t idxDbgReg; } Base; /** The SIB index register meaning, applicable if DISUSE_INDEX is * set in fUse. */ union { /** General register index (DISGREG_XXX), applicable if DISUSE_REG_GEN8, * DISUSE_REG_GEN16, DISUSE_REG_GEN32 or DISUSE_REG_GEN64 is set in fUse. */ uint8_t idxGenReg; /** XMM register index (DISXREG_XXX), applicable if DISUSE_REG_XMM * is set in fUse. */ uint8_t idxXmmReg; /** YMM register index (DISXREG_XXX), applicable if DISUSE_REG_YMM * is set in fUse. */ uint8_t idxYmmReg; } Index; /** 2, 4 or 8, if DISUSE_SCALE is set in fUse. */ uint8_t uScale; /** Parameter size. */ uint8_t cb; /** Copy of the corresponding DISOPCODE::fParam1 / DISOPCODE::fParam2 / * DISOPCODE::fParam3. */ uint32_t fParam; } DISOPPARAM; AssertCompileSize(DISOPPARAM, 32); /** Pointer to opcode parameter. */ typedef DISOPPARAM *PDISOPPARAM; /** Pointer to opcode parameter. */ typedef const DISOPPARAM *PCDISOPPARAM; #if (defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)) && defined(DIS_CORE_ONLY) # define DISOPCODE_BITFIELD(a_cBits) : a_cBits #else # define DISOPCODE_BITFIELD(a_cBits) #endif /** * Opcode descriptor. */ #if !defined(DIS_CORE_ONLY) || defined(DOXYGEN_RUNNING) typedef struct DISOPCODE { # define DISOPCODE_FORMAT 0 /** Mnemonic and operand formatting. */ const char *pszOpcode; /** Parameter \#1 parser index. */ uint8_t idxParse1; /** Parameter \#2 parser index. */ uint8_t idxParse2; /** Parameter \#3 parser index. */ uint8_t idxParse3; /** Parameter \#4 parser index. */ uint8_t idxParse4; /** The opcode identifier. This DIS specific, @see grp_dis_opcodes and * VBox/disopcode.h. */ uint16_t uOpcode; /** Parameter \#1 info, @see grp_dis_opparam. */ uint16_t fParam1; /** Parameter \#2 info, @see grp_dis_opparam. */ uint16_t fParam2; /** Parameter \#3 info, @see grp_dis_opparam. */ uint16_t fParam3; /** Parameter \#4 info, @see grp_dis_opparam. */ uint16_t fParam4; /** padding unused */ uint16_t uPadding; /** Operand type flags, DISOPTYPE_XXX. */ uint32_t fOpType; } DISOPCODE; #else # pragma pack(1) typedef struct DISOPCODE { #if 1 /*!defined(RT_ARCH_X86) && !defined(RT_ARCH_AMD64) - probably not worth it for ~4K, costs 2-3% speed. */ /* 16 bytes (trick is to make sure the bitfields doesn't cross dwords): */ # define DISOPCODE_FORMAT 16 uint32_t fOpType; uint16_t uOpcode; uint8_t idxParse1; uint8_t idxParse2; uint32_t fParam1 : 12; /* 1st dword: 12+12+8 = 0x20 (32) */ uint32_t fParam2 : 12; uint32_t idxParse3 : 8; uint32_t fParam3 : 12; /* 2nd dword: 12+12+8 = 0x20 (32) */ uint32_t fParam4 : 12; uint32_t idxParse4 : 8; #else /* 15 bytes: */ # define DISOPCODE_FORMAT 15 uint64_t uOpcode : 10; /* 1st qword: 10+12+12+12+6+6+6 = 0x40 (64) */ uint64_t idxParse1 : 6; uint64_t idxParse2 : 6; uint64_t idxParse3 : 6; uint64_t fParam1 : 12; uint64_t fParam2 : 12; uint64_t fParam3 : 12; uint32_t fOpType; uint16_t fParam4; uint8_t idxParse4; #endif } DISOPCODE; # pragma pack() AssertCompile(sizeof(DISOPCODE) == DISOPCODE_FORMAT); #endif /** Pointer to const opcode. */ typedef const struct DISOPCODE *PCDISOPCODE; /** * Callback for reading instruction bytes. * * @returns VBox status code, bytes in DISSTATE::abInstr and byte count in * DISSTATE::cbCachedInstr. * @param pDis Pointer to the disassembler state. The user * argument can be found in DISSTATE::pvUser if needed. * @param offInstr The offset relative to the start of the instruction. * * To get the source address, add this to * DISSTATE::uInstrAddr. * * To calculate the destination buffer address, use it * as an index into DISSTATE::abInstr. * * @param cbMinRead The minimum number of bytes to read. * @param cbMaxRead The maximum number of bytes that may be read. */ typedef DECLCALLBACKTYPE(int, FNDISREADBYTES,(PDISSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)); /** Pointer to a opcode byte reader. */ typedef FNDISREADBYTES *PFNDISREADBYTES; /** Parser callback. * @remark no DECLCALLBACK() here because it's considered to be internal and * there is no point in enforcing CDECL. */ typedef size_t FNDISPARSE(size_t offInstr, PCDISOPCODE pOp, PDISSTATE pDis, PDISOPPARAM pParam); /** Pointer to a disassembler parser function. */ typedef FNDISPARSE *PFNDISPARSE; /** Pointer to a const disassembler parser function pointer. */ typedef PFNDISPARSE const *PCPFNDISPARSE; /** * The diassembler state and result. */ typedef struct DISSTATE { /** The number of valid bytes in abInstr. */ uint8_t cbCachedInstr; /** SIB fields. */ union { /** Bitfield view */ struct { uint8_t Base; uint8_t Index; uint8_t Scale; } Bits; } SIB; /** ModRM fields. */ union { /** Bitfield view */ struct { uint8_t Rm; uint8_t Reg; uint8_t Mod; } Bits; } ModRM; /** The CPU mode (DISCPUMODE). */ uint8_t uCpuMode; /** The addressing mode (DISCPUMODE). */ uint8_t uAddrMode; /** The operand mode (DISCPUMODE). */ uint8_t uOpMode; /** Per instruction prefix settings. */ uint8_t fPrefix; /** REX prefix value (64 bits only). */ uint8_t fRexPrefix; /** Segment prefix value (DISSELREG). */ uint8_t idxSegPrefix; /** Last prefix byte (for SSE2 extension tables). */ uint8_t bLastPrefix; /** Last significant opcode byte of instruction. */ uint8_t bOpCode; /** The size of the prefix bytes. */ uint8_t cbPrefix; /** The instruction size. */ uint8_t cbInstr; /** VEX presence flag, destination register and size * @todo r=bird: There is no VEX presence flage here, just ~vvvv and L. */ uint8_t bVexDestReg; /** VEX.W flag */ uint8_t bVexWFlag; /** Unused bytes. */ uint8_t abUnused[1]; /** Internal: instruction filter */ uint32_t fFilter; /** Internal: pointer to disassembly function table */ PCPFNDISPARSE pfnDisasmFnTable; #if ARCH_BITS == 32 uint32_t uPtrPadding1; #endif /** Pointer to the current instruction. */ PCDISOPCODE pCurInstr; #if ARCH_BITS == 32 uint32_t uPtrPadding2; #endif /** The instruction bytes. */ uint8_t abInstr[16]; /** SIB displacment. */ int32_t i32SibDisp; /** Return code set by a worker function like the opcode bytes readers. */ int32_t rc; /** The address of the instruction. */ RTUINTPTR uInstrAddr; /** Optional read function */ PFNDISREADBYTES pfnReadBytes; #if ARCH_BITS == 32 uint32_t uPadding3; #endif /** User data supplied as an argument to the APIs. */ void *pvUser; #if ARCH_BITS == 32 uint32_t uPadding4; #endif /** Parameters. */ DISOPPARAM Param1; DISOPPARAM Param2; DISOPPARAM Param3; DISOPPARAM Param4; } DISSTATE; AssertCompileSize(DISSTATE, 0xd8); /** @deprecated Use DISSTATE and change Cpu and DisState to Dis. */ typedef DISSTATE DISCPUSTATE; DISDECL(int) DISInstrToStr(void const *pvInstr, DISCPUMODE enmCpuMode, PDISSTATE pDis, uint32_t *pcbInstr, char *pszOutput, size_t cbOutput); DISDECL(int) DISInstrToStrWithReader(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, PFNDISREADBYTES pfnReadBytes, void *pvUser, PDISSTATE pDis, uint32_t *pcbInstr, char *pszOutput, size_t cbOutput); DISDECL(int) DISInstrToStrEx(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, PFNDISREADBYTES pfnReadBytes, void *pvUser, uint32_t uFilter, PDISSTATE pDis, uint32_t *pcbInstr, char *pszOutput, size_t cbOutput); DISDECL(int) DISInstr(void const *pvInstr, DISCPUMODE enmCpuMode, PDISSTATE pDis, uint32_t *pcbInstr); DISDECL(int) DISInstrWithReader(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, PFNDISREADBYTES pfnReadBytes, void *pvUser, PDISSTATE pDis, uint32_t *pcbInstr); DISDECL(int) DISInstrEx(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, uint32_t uFilter, PFNDISREADBYTES pfnReadBytes, void *pvUser, PDISSTATE pDis, uint32_t *pcbInstr); DISDECL(int) DISInstrWithPrefetchedBytes(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, uint32_t fFilter, void const *pvPrefetched, size_t cbPretched, PFNDISREADBYTES pfnReadBytes, void *pvUser, PDISSTATE pDis, uint32_t *pcbInstr); DISDECL(uint8_t) DISGetParamSize(PCDISSTATE pDis, PCDISOPPARAM pParam); DISDECL(DISSELREG) DISDetectSegReg(PCDISSTATE pDis, PCDISOPPARAM pParam); DISDECL(uint8_t) DISQuerySegPrefixByte(PCDISSTATE pDis); /** @name Flags returned by DISQueryParamVal (DISQPVPARAMVAL::flags). * @{ */ #define DISQPV_FLAG_8 UINT8_C(0x01) #define DISQPV_FLAG_16 UINT8_C(0x02) #define DISQPV_FLAG_32 UINT8_C(0x04) #define DISQPV_FLAG_64 UINT8_C(0x08) #define DISQPV_FLAG_FARPTR16 UINT8_C(0x10) #define DISQPV_FLAG_FARPTR32 UINT8_C(0x20) /** @} */ /** @name Types returned by DISQueryParamVal (DISQPVPARAMVAL::flags). * @{ */ #define DISQPV_TYPE_REGISTER UINT8_C(1) #define DISQPV_TYPE_ADDRESS UINT8_C(2) #define DISQPV_TYPE_IMMEDIATE UINT8_C(3) /** @} */ typedef struct { union { uint8_t val8; uint16_t val16; uint32_t val32; uint64_t val64; int8_t i8; int16_t i16; int32_t i32; int64_t i64; struct { uint16_t sel; uint32_t offset; } farptr; } val; uint8_t type; uint8_t size; uint8_t flags; } DISQPVPARAMVAL; /** Pointer to opcode parameter value. */ typedef DISQPVPARAMVAL *PDISQPVPARAMVAL; /** Indicates which parameter DISQueryParamVal should operate on. */ typedef enum DISQPVWHICH { DISQPVWHICH_DST = 1, DISQPVWHICH_SRC, DISQPVWHAT_32_BIT_HACK = 0x7fffffff } DISQPVWHICH; DISDECL(int) DISQueryParamVal(PCPUMCTXCORE pCtx, PCDISSTATE pDis, PCDISOPPARAM pParam, PDISQPVPARAMVAL pParamVal, DISQPVWHICH parmtype); DISDECL(int) DISQueryParamRegPtr(PCPUMCTXCORE pCtx, PCDISSTATE pDis, PCDISOPPARAM pParam, void **ppReg, size_t *pcbSize); DISDECL(int) DISFetchReg8(PCCPUMCTXCORE pCtx, unsigned reg8, uint8_t *pVal); DISDECL(int) DISFetchReg16(PCCPUMCTXCORE pCtx, unsigned reg16, uint16_t *pVal); DISDECL(int) DISFetchReg32(PCCPUMCTXCORE pCtx, unsigned reg32, uint32_t *pVal); DISDECL(int) DISFetchReg64(PCCPUMCTXCORE pCtx, unsigned reg64, uint64_t *pVal); DISDECL(int) DISFetchRegSeg(PCCPUMCTXCORE pCtx, DISSELREG sel, RTSEL *pVal); DISDECL(int) DISFetchRegSegEx(PCPUMCTXCORE pCtx, DISSELREG sel, PCPUMSELREG *ppSelReg); DISDECL(int) DISWriteReg8(PCPUMCTXCORE pRegFrame, unsigned reg8, uint8_t val8); DISDECL(int) DISWriteReg16(PCPUMCTXCORE pRegFrame, unsigned reg32, uint16_t val16); DISDECL(int) DISWriteReg32(PCPUMCTXCORE pRegFrame, unsigned reg32, uint32_t val32); DISDECL(int) DISWriteReg64(PCPUMCTXCORE pRegFrame, unsigned reg64, uint64_t val64); DISDECL(int) DISWriteRegSeg(PCPUMCTXCORE pCtx, DISSELREG sel, RTSEL val); DISDECL(int) DISPtrReg8(PCPUMCTXCORE pCtx, unsigned reg8, uint8_t **ppReg); DISDECL(int) DISPtrReg16(PCPUMCTXCORE pCtx, unsigned reg16, uint16_t **ppReg); DISDECL(int) DISPtrReg32(PCPUMCTXCORE pCtx, unsigned reg32, uint32_t **ppReg); DISDECL(int) DISPtrReg64(PCPUMCTXCORE pCtx, unsigned reg64, uint64_t **ppReg); /** * Try resolve an address into a symbol name. * * For use with DISFormatYasmEx(), DISFormatMasmEx() and DISFormatGasEx(). * * @returns VBox status code. * @retval VINF_SUCCESS on success, pszBuf contains the full symbol name. * @retval VINF_BUFFER_OVERFLOW if pszBuf is too small the symbol name. The * content of pszBuf is truncated and zero terminated. * @retval VERR_SYMBOL_NOT_FOUND if no matching symbol was found for the address. * * @param pDis Pointer to the disassembler CPU state. * @param u32Sel The selector value. Use DIS_FMT_SEL_IS_REG, DIS_FMT_SEL_GET_VALUE, * DIS_FMT_SEL_GET_REG to access this. * @param uAddress The segment address. * @param pszBuf Where to store the symbol name * @param cchBuf The size of the buffer. * @param poff If not a perfect match, then this is where the offset from the return * symbol to the specified address is returned. * @param pvUser The user argument. */ typedef DECLCALLBACKTYPE(int, FNDISGETSYMBOL,(PCDISSTATE pDis, uint32_t u32Sel, RTUINTPTR uAddress, char *pszBuf, size_t cchBuf, RTINTPTR *poff, void *pvUser)); /** Pointer to a FNDISGETSYMBOL(). */ typedef FNDISGETSYMBOL *PFNDISGETSYMBOL; /** * Checks if the FNDISGETSYMBOL argument u32Sel is a register or not. */ #define DIS_FMT_SEL_IS_REG(u32Sel) ( !!((u32Sel) & RT_BIT(31)) ) /** * Extracts the selector value from the FNDISGETSYMBOL argument u32Sel. * @returns Selector value. */ #define DIS_FMT_SEL_GET_VALUE(u32Sel) ( (RTSEL)(u32Sel) ) /** * Extracts the register number from the FNDISGETSYMBOL argument u32Sel. * @returns USE_REG_CS, USE_REG_SS, USE_REG_DS, USE_REG_ES, USE_REG_FS or USE_REG_FS. */ #define DIS_FMT_SEL_GET_REG(u32Sel) ( ((u32Sel) >> 16) & 0xf ) /** @internal */ #define DIS_FMT_SEL_FROM_REG(uReg) ( ((uReg) << 16) | RT_BIT(31) | 0xffff ) /** @internal */ #define DIS_FMT_SEL_FROM_VALUE(Sel) ( (Sel) & 0xffff ) /** @name Flags for use with DISFormatYasmEx(), DISFormatMasmEx() and DISFormatGasEx(). * @{ */ /** Put the address to the right. */ #define DIS_FMT_FLAGS_ADDR_RIGHT RT_BIT_32(0) /** Put the address to the left. */ #define DIS_FMT_FLAGS_ADDR_LEFT RT_BIT_32(1) /** Put the address in comments. * For some assemblers this implies placing it to the right. */ #define DIS_FMT_FLAGS_ADDR_COMMENT RT_BIT_32(2) /** Put the instruction bytes to the right of the disassembly. */ #define DIS_FMT_FLAGS_BYTES_RIGHT RT_BIT_32(3) /** Put the instruction bytes to the left of the disassembly. */ #define DIS_FMT_FLAGS_BYTES_LEFT RT_BIT_32(4) /** Put the instruction bytes in comments. * For some assemblers this implies placing the bytes to the right. */ #define DIS_FMT_FLAGS_BYTES_COMMENT RT_BIT_32(5) /** Put the bytes in square brackets. */ #define DIS_FMT_FLAGS_BYTES_BRACKETS RT_BIT_32(6) /** Put spaces between the bytes. */ #define DIS_FMT_FLAGS_BYTES_SPACED RT_BIT_32(7) /** Display the relative +/- offset of branch instructions that uses relative addresses, * and put the target address in parenthesis. */ #define DIS_FMT_FLAGS_RELATIVE_BRANCH RT_BIT_32(8) /** Strict assembly. The assembly should, when ever possible, make the * assembler reproduce the exact same binary. (Refers to the yasm * strict keyword.) */ #define DIS_FMT_FLAGS_STRICT RT_BIT_32(9) /** Checks if the given flags are a valid combination. */ #define DIS_FMT_FLAGS_IS_VALID(fFlags) \ ( !((fFlags) & ~UINT32_C(0x000003ff)) \ && ((fFlags) & (DIS_FMT_FLAGS_ADDR_RIGHT | DIS_FMT_FLAGS_ADDR_LEFT)) != (DIS_FMT_FLAGS_ADDR_RIGHT | DIS_FMT_FLAGS_ADDR_LEFT) \ && ( !((fFlags) & DIS_FMT_FLAGS_ADDR_COMMENT) \ || (fFlags & (DIS_FMT_FLAGS_ADDR_RIGHT | DIS_FMT_FLAGS_ADDR_LEFT)) ) \ && ((fFlags) & (DIS_FMT_FLAGS_BYTES_RIGHT | DIS_FMT_FLAGS_BYTES_LEFT)) != (DIS_FMT_FLAGS_BYTES_RIGHT | DIS_FMT_FLAGS_BYTES_LEFT) \ && ( !((fFlags) & (DIS_FMT_FLAGS_BYTES_COMMENT | DIS_FMT_FLAGS_BYTES_BRACKETS)) \ || (fFlags & (DIS_FMT_FLAGS_BYTES_RIGHT | DIS_FMT_FLAGS_BYTES_LEFT)) ) \ ) /** @} */ DISDECL(size_t) DISFormatYasm( PCDISSTATE pDis, char *pszBuf, size_t cchBuf); DISDECL(size_t) DISFormatYasmEx(PCDISSTATE pDis, char *pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void *pvUser); DISDECL(size_t) DISFormatMasm( PCDISSTATE pDis, char *pszBuf, size_t cchBuf); DISDECL(size_t) DISFormatMasmEx(PCDISSTATE pDis, char *pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void *pvUser); DISDECL(size_t) DISFormatGas( PCDISSTATE pDis, char *pszBuf, size_t cchBuf); DISDECL(size_t) DISFormatGasEx( PCDISSTATE pDis, char *pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void *pvUser); /** @todo DISAnnotate(PCDISSTATE pDis, char *pszBuf, size_t cchBuf, register * reader, memory reader); */ DISDECL(bool) DISFormatYasmIsOddEncoding(PDISSTATE pDis); /** @} */ RT_C_DECLS_END #endif /* !VBOX_INCLUDED_dis_h */