15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Copyright (c) 2007, Google Inc. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * All rights reserved. 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * modification, are permitted provided that the following conditions are 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * met: 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * * Redistributions of source code must retain the above copyright 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * notice, this list of conditions and the following disclaimer. 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * * Redistributions in binary form must reproduce the above 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * copyright notice, this list of conditions and the following disclaimer 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in the documentation and/or other materials provided with the 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * distribution. 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * * Neither the name of Google Inc. nor the names of its 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * contributors may be used to endorse or promote products derived from 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * this software without specific prior written permission. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * --- 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Author: Joi Sigurdsson 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Table of relevant information about how to decode the ModR/M byte. 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Based on information in the IA-32 Intel® Architecture 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Software Developer's Manual Volume 2: Instruction Set Reference. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "mini_disassembler.h" 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "mini_disassembler_types.h" 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace sidestep { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const ModrmEntry MiniDisassembler::s_ia16_modrm_map_[] = { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 00 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, false, OS_ZERO }, 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { false, false, OS_ZERO }, 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_WORD }, 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO }, 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 01 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_BYTE }, 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_BYTE }, 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_BYTE }, 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_BYTE }, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, false, OS_BYTE }, 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_BYTE }, 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_BYTE }, 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_BYTE }, 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 10 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_WORD }, 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_WORD }, 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_WORD }, 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_WORD }, 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, false, OS_WORD }, 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_WORD }, 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_WORD }, 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_WORD }, 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 11 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, false, OS_ZERO }, 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { false, false, OS_ZERO }, 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { false, false, OS_ZERO }, 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO } 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const ModrmEntry MiniDisassembler::s_ia32_modrm_map_[] = { 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 00 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, true, OS_ZERO }, 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_DOUBLE_WORD }, 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { false, false, OS_ZERO }, 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO }, 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 01 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_BYTE }, 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_BYTE }, 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_BYTE }, 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_BYTE }, 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, true, OS_BYTE }, 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_BYTE }, 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_BYTE }, 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_BYTE }, 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 10 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_DOUBLE_WORD }, 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_DOUBLE_WORD }, 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_DOUBLE_WORD }, 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_DOUBLE_WORD }, 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, true, OS_DOUBLE_WORD }, 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_DOUBLE_WORD }, 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_DOUBLE_WORD }, 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_DOUBLE_WORD }, 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 11 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, false, OS_ZERO }, 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { false, false, OS_ZERO }, 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { false, false, OS_ZERO }, 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO }, 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; // namespace sidestep 122