thumb.isa revision 7278:562ced200e54
1// -*- mode:c++ -*- 2 3// Copyright (c) 2010 ARM Limited 4// All rights reserved 5// 6// The license below extends only to copyright in the software and shall 7// not be construed as granting a license to any other intellectual 8// property including but not limited to intellectual property relating 9// to a hardware implementation of the functionality of the software 10// licensed hereunder. You may use the software subject to the license 11// terms below provided that you ensure that this notice is replicated 12// unmodified and in its entirety in all distributions of the software, 13// modified or unmodified, in source code or in binary form. 14// 15// Copyright (c) 2009 The Regents of The University of Michigan 16// All rights reserved. 17// 18// Redistribution and use in source and binary forms, with or without 19// modification, are permitted provided that the following conditions are 20// met: redistributions of source code must retain the above copyright 21// notice, this list of conditions and the following disclaimer; 22// redistributions in binary form must reproduce the above copyright 23// notice, this list of conditions and the following disclaimer in the 24// documentation and/or other materials provided with the distribution; 25// neither the name of the copyright holders nor the names of its 26// contributors may be used to endorse or promote products derived from 27// this software without specific prior written permission. 28// 29// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40// 41// Authors: Gabe Black 42 431: decode BIGTHUMB { 44 // 16 bit thumb instructions. 45 0: decode TOPCODE_15_13 { 46 0x0, 0x1: Thumb16ShiftAddSubMoveCmp::thumb16ShiftAddMoveCmp(); 47 0x2: decode TOPCODE_12_10 { 48 0x0: Thumb16DataProcessing::thumb16DataProcessing(); 49 0x1: Thumb16SpecDataAndBx::thumb16SpecDataAndBx(); 50 0x2, 0x3: Thumb16MemLit::thumb16MemLit(); 51 default: Thumb16MemReg::thumb16MemReg(); 52 } 53 0x3, 0x4: Thumb16MemImm::thumb16MemImm(); 54 0x5: decode TOPCODE_12_11 { 55 0x0: Thumb16Adr::thumb16Adr(); 56 0x1: Thumb16AddSp::thumb16AddSp(); //sp, immediate 57 0x2, 0x3: Thumb16Misc::thumb16Misc(); 58 } 59 0x6: decode TOPCODE_12_11 { 60 0x0, 0x1: Thumb16MacroMem::thumb16MacroMem(); 61 0x2, 0x3: Thumb16CondBranchAndSvc::thumb16CondBranchAndSvc(); 62 } 63 0x7: decode TOPCODE_12_11 { 64 0x0: Thumb16UncondBranch::thumb16UncondBranch(); 65 } 66 } 67 68 // 32 bit thumb instructions. 69 1: decode HTOPCODE_12_11 { 70 0x1: decode HTOPCODE_10_9 { 71 0x0: decode HTOPCODE_6 { 72 0x0: decode HTOPCODE_8_7 { 73 0x0, 0x3: decode HTOPCODE_4 { 74 0x0: WarnUnimpl::srs(); 75 0x1: WarnUnimpl::rfe(); 76 } 77 // This uses the same encoding as regular ARM. 78 default: ArmMacroMem::armMacroMem(); 79 } 80 0x1: Thumb32LdrStrDExTbh::thumb32LdrStrDExTbh(); 81 } 82 0x1: Thumb32DataProcShiftReg::thumb32DataProcShiftReg(); 83 default: decode HTOPCODE_9_8 { 84 0x2: decode LTOPCODE_4 { 85 0x0: decode LTCOPROC { 86 0xa, 0xb: decode OPCODE_23_20 { 87##include "vfp.isa" 88 } 89 default: WarnUnimpl::cdp(); // cdp2 90 } 91 0x1: decode LTCOPROC { 92 0xa, 0xb: WarnUnimpl::Core_to_extension_transfer(); 93 default: decode CPNUM { 94 15: McrMrc15::mcrMrc15(); 95 default: decode HTOPCODE_4 { 96 0x0: WarnUnimpl::mcr(); 97 0x1: WarnUnimpl::mrc(); 98 } 99 } 100 } 101 } 102 0x3: WarnUnimpl::Advanced_SIMD(); 103 default: decode LTCOPROC { 104 0xa, 0xb: decode HTOPCODE_9_4 { 105 0x00: WarnUnimpl::undefined(); 106 0x04: WarnUnimpl::mcrr(); // mcrr2 107 0x05: WarnUnimpl::mrrc(); // mrrc2 108 0x02, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 109 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e: 110 WarnUnimpl::stc(); // stc2 111 0x03, 0x07, 0x09, 0x0b, 0x0d, 0x0f, 0x11, 112 0x13, 0x15, 0x17, 0x19, 0x1b, 0x1d, 0x1f: 113 decode HTRN { 114 0xf: WarnUnimpl::ldc(); // ldc2 (literal) 115 default: WarnUnimpl::ldc(); // ldc2 (immediate) 116 } 117 } 118 default: decode HTOPCODE_9_5 { 119 0x00: WarnUnimpl::undefined(); 120 0x02: WarnUnimpl::SIMD_VFP_64_bit_core_extension_transfer(); 121 0x01, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 122 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f: 123 WarnUnimpl::Extension_register_load_store_instruction(); 124 } 125 } 126 } 127 } 128 0x2: decode LTOPCODE_15 { 129 0x0: decode HTOPCODE_9 { 130 0x0: Thumb32DataProcModImm::thumb32DataProcModImm(); 131 0x1: Thumb32DataProcPlainBin::thumb32DataProcPlainBin(); 132 } 133 0x1: Thumb32BranchesAndMiscCtrl::thumb32BranchesAndMiscCtrl(); 134 } 135 0x3: decode HTOPCODE_10_9 { 136 0x0: decode HTOPCODE_4 { 137 0x0: decode HTOPCODE_8 { 138 0x0: Thumb32StoreSingle::thumb32StoreSingle(); 139 0x1: WarnUnimpl::Advanced_SIMD_or_structure_load_store(); 140 } 141 0x1: decode HTOPCODE_6_5 { 142 0x0: LoadByteMemoryHints::loadByteMemoryHints(); 143 0x1: LoadHalfwordMemoryHints::loadHalfwordMemoryHints(); 144 0x2: Thumb32LoadWord::thumb32LoadWord(); 145 0x3: WarnUnimpl::undefined(); 146 } 147 } 148 0x1: decode HTOPCODE_8_7 { 149 0x2: Thumb32MulMulAccAndAbsDiff::thumb32MulMulAccAndAbsDiff(); 150 0x3: Thumb32LongMulMulAccAndDiv::thumb32LongMulMulAccAndDiv(); 151 default: Thumb32DataProcReg::thumb32DataProcReg(); 152 } 153 default: decode HTOPCODE_9_8 { 154 0x2: decode LTOPCODE_4 { 155 0x0: decode LTCOPROC { 156 0xa, 0xb: WarnUnimpl::VFP_Inst(); 157 default: WarnUnimpl::cdp(); // cdp2 158 } 159 0x1: decode LTCOPROC { 160 0xa, 0xb: WarnUnimpl::Core_to_extension_transfer(); 161 default: decode CPNUM { 162 15: McrMrc15::mcr2Mrc215(); 163 default: decode HTOPCODE_4 { 164 0x0: WarnUnimpl::mcr2(); 165 0x1: WarnUnimpl::mrc2(); 166 } 167 } 168 } 169 } 170 0x3: WarnUnimpl::Advanced_SIMD(); 171 default: decode LTCOPROC { 172 0xa, 0xb: decode HTOPCODE_9_4 { 173 0x00: WarnUnimpl::undefined(); 174 0x04: WarnUnimpl::mcrr(); // mcrr2 175 0x05: WarnUnimpl::mrrc(); // mrrc2 176 0x02, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 177 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e: 178 WarnUnimpl::stc(); // stc2 179 0x03, 0x07, 0x09, 0x0b, 0x0d, 0x0f, 0x11, 180 0x13, 0x15, 0x17, 0x19, 0x1b, 0x1d, 0x1f: 181 decode HTRN { 182 0xf: WarnUnimpl::ldc(); // ldc2 (literal) 183 default: WarnUnimpl::ldc(); // ldc2 (immediate) 184 } 185 } 186 default: decode HTOPCODE_9_5 { 187 0x00: WarnUnimpl::undefined(); 188 0x02: WarnUnimpl::SIMD_VFP_64_bit_core_extension_transfer(); 189 0x01, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 190 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f: 191 WarnUnimpl::Extension_register_load_store_instruction(); 192 } 193 } 194 } 195 } 196 } 197} 198