/* udis86 - libudis86/decode.h * * Copyright (c) 2002-2009 Vivek Thampi * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef UD_DECODE_H #define UD_DECODE_H #define MAX_INSN_LENGTH 15 /* register classes */ #define T_NONE 0 #define T_GPR 1 #define T_MMX 2 #define T_CRG 3 #define T_DBG 4 #define T_SEG 5 #define T_XMM 6 /* itab prefix bits */ #define P_none ( 0 ) #define P_c1 ( 1 << 0 ) #define P_C1(n) ( ( n >> 0 ) & 1 ) #define P_rexb ( 1 << 1 ) #define P_REXB(n) ( ( n >> 1 ) & 1 ) #define P_depM ( 1 << 2 ) #define P_DEPM(n) ( ( n >> 2 ) & 1 ) #define P_c3 ( 1 << 3 ) #define P_C3(n) ( ( n >> 3 ) & 1 ) #define P_inv64 ( 1 << 4 ) #define P_INV64(n) ( ( n >> 4 ) & 1 ) #define P_rexw ( 1 << 5 ) #define P_REXW(n) ( ( n >> 5 ) & 1 ) #define P_c2 ( 1 << 6 ) #define P_C2(n) ( ( n >> 6 ) & 1 ) #define P_def64 ( 1 << 7 ) #define P_DEF64(n) ( ( n >> 7 ) & 1 ) #define P_rexr ( 1 << 8 ) #define P_REXR(n) ( ( n >> 8 ) & 1 ) #define P_oso ( 1 << 9 ) #define P_OSO(n) ( ( n >> 9 ) & 1 ) #define P_aso ( 1 << 10 ) #define P_ASO(n) ( ( n >> 10 ) & 1 ) #define P_rexx ( 1 << 11 ) #define P_REXX(n) ( ( n >> 11 ) & 1 ) #define P_ImpAddr ( 1 << 12 ) #define P_IMPADDR(n) ( ( n >> 12 ) & 1 ) /* rex prefix bits */ #define REX_W(r) ( ( 0xF & ( r ) ) >> 3 ) #define REX_R(r) ( ( 0x7 & ( r ) ) >> 2 ) #define REX_X(r) ( ( 0x3 & ( r ) ) >> 1 ) #define REX_B(r) ( ( 0x1 & ( r ) ) >> 0 ) #define REX_PFX_MASK(n) ( ( P_REXW(n) << 3 ) | \ ( P_REXR(n) << 2 ) | \ ( P_REXX(n) << 1 ) | \ ( P_REXB(n) << 0 ) ) /* scable-index-base bits */ #define SIB_S(b) ( ( b ) >> 6 ) #define SIB_I(b) ( ( ( b ) >> 3 ) & 7 ) #define SIB_B(b) ( ( b ) & 7 ) /* modrm bits */ #define MODRM_REG(b) ( ( ( b ) >> 3 ) & 7 ) #define MODRM_NNN(b) ( ( ( b ) >> 3 ) & 7 ) #define MODRM_MOD(b) ( ( ( b ) >> 6 ) & 3 ) #define MODRM_RM(b) ( ( b ) & 7 ) /* operand type constants -- order is important! */ enum __attribute__((packed)) ud_operand_code { OP_NONE, OP_A, OP_E, OP_M, OP_G, OP_I, OP_AL, OP_CL, OP_DL, OP_BL, OP_AH, OP_CH, OP_DH, OP_BH, OP_ALr8b, OP_CLr9b, OP_DLr10b, OP_BLr11b, OP_AHr12b, OP_CHr13b, OP_DHr14b, OP_BHr15b, OP_AX, OP_CX, OP_DX, OP_BX, OP_SI, OP_DI, OP_SP, OP_BP, OP_rAX, OP_rCX, OP_rDX, OP_rBX, OP_rSP, OP_rBP, OP_rSI, OP_rDI, OP_rAXr8, OP_rCXr9, OP_rDXr10, OP_rBXr11, OP_rSPr12, OP_rBPr13, OP_rSIr14, OP_rDIr15, OP_eAX, OP_eCX, OP_eDX, OP_eBX, OP_eSP, OP_eBP, OP_eSI, OP_eDI, OP_ES, OP_CS, OP_SS, OP_DS, OP_FS, OP_GS, OP_ST0, OP_ST1, OP_ST2, OP_ST3, OP_ST4, OP_ST5, OP_ST6, OP_ST7, OP_J, OP_S, OP_O, OP_I1, OP_I3, OP_V, OP_W, OP_Q, OP_P, OP_R, OP_C, OP_D, OP_VR, OP_PR }; /* operand size constants */ enum __attribute__((packed)) ud_operand_size { SZ_NA = 0, SZ_Z = 1, SZ_V = 2, SZ_P = 3, SZ_WP = 4, SZ_DP = 5, SZ_MDQ = 6, SZ_RDQ = 7, /* the following values are used as is, * and thus hard-coded. changing them * will break internals */ SZ_B = 8, SZ_W = 16, SZ_D = 32, SZ_Q = 64, SZ_T = 80, SZ_O = 128, }; /* A single operand of an entry in the instruction table. * (internal use only) */ struct ud_itab_entry_operand { enum ud_operand_code type; enum ud_operand_size size; }; /* A single entry in an instruction table. *(internal use only) */ struct ud_itab_entry { enum ud_mnemonic_code mnemonic; struct ud_itab_entry_operand operand1; struct ud_itab_entry_operand operand2; struct ud_itab_entry_operand operand3; uint32_t prefix; }; extern const char * ud_lookup_mnemonic( enum ud_mnemonic_code c ); #endif /* UD_DECODE_H */ /* vim:cindent * vim:expandtab * vim:ts=4 * vim:sw=4 */