15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Table of relevant information about how to decode the ModR/M byte. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Based on information in the IA-32 Intel Architecture 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Software Developer's Manual Volume 2: Instruction Set Reference. 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "sidestep/mini_disassembler.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "sidestep/mini_disassembler_types.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace sidestep { 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const ModrmEntry MiniDisassembler::s_ia16_modrm_map_[] = { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 00 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, false, OS_ZERO }, 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { false, false, OS_ZERO }, 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_WORD }, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO }, 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 01 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_BYTE }, 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_BYTE }, 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_BYTE }, 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_BYTE }, 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, false, OS_BYTE }, 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_BYTE }, 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_BYTE }, 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_BYTE }, 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 10 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_WORD }, 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_WORD }, 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_WORD }, 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_WORD }, 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, false, OS_WORD }, 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_WORD }, 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_WORD }, 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_WORD }, 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 11 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, false, OS_ZERO }, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { false, false, OS_ZERO }, 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { false, false, OS_ZERO }, 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO } 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const ModrmEntry MiniDisassembler::s_ia32_modrm_map_[] = { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 00 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, true, OS_ZERO }, 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_DOUBLE_WORD }, 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { false, false, OS_ZERO }, 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO }, 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 01 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_BYTE }, 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_BYTE }, 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_BYTE }, 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_BYTE }, 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, true, OS_BYTE }, 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_BYTE }, 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_BYTE }, 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_BYTE }, 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 10 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { true, false, OS_DOUBLE_WORD }, 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { true, false, OS_DOUBLE_WORD }, 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { true, false, OS_DOUBLE_WORD }, 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { true, false, OS_DOUBLE_WORD }, 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { true, true, OS_DOUBLE_WORD }, 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { true, false, OS_DOUBLE_WORD }, 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { true, false, OS_DOUBLE_WORD }, 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { true, false, OS_DOUBLE_WORD }, 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// mod == 11 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 000 */ { false, false, OS_ZERO }, 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 001 */ { false, false, OS_ZERO }, 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 010 */ { false, false, OS_ZERO }, 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 011 */ { false, false, OS_ZERO }, 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 100 */ { false, false, OS_ZERO }, 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 101 */ { false, false, OS_ZERO }, 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 110 */ { false, false, OS_ZERO }, 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* r/m == 111 */ { false, false, OS_ZERO }, 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; // namespace sidestep 93