thumb.isa revision 7108
1572SN/A// -*- mode:c++ -*- 21762SN/A 3572SN/A// Copyright (c) 2010 ARM Limited 4572SN/A// All rights reserved 5572SN/A// 6572SN/A// The license below extends only to copyright in the software and shall 7572SN/A// not be construed as granting a license to any other intellectual 8572SN/A// property including but not limited to intellectual property relating 9572SN/A// to a hardware implementation of the functionality of the software 10572SN/A// licensed hereunder. You may use the software subject to the license 11572SN/A// terms below provided that you ensure that this notice is replicated 12572SN/A// unmodified and in its entirety in all distributions of the software, 13572SN/A// modified or unmodified, in source code or in binary form. 14572SN/A// 15572SN/A// Copyright (c) 2009 The Regents of The University of Michigan 16572SN/A// All rights reserved. 17572SN/A// 18572SN/A// Redistribution and use in source and binary forms, with or without 19572SN/A// modification, are permitted provided that the following conditions are 20572SN/A// met: redistributions of source code must retain the above copyright 21572SN/A// notice, this list of conditions and the following disclaimer; 22572SN/A// redistributions in binary form must reproduce the above copyright 23572SN/A// notice, this list of conditions and the following disclaimer in the 24572SN/A// documentation and/or other materials provided with the distribution; 25572SN/A// neither the name of the copyright holders nor the names of its 26572SN/A// contributors may be used to endorse or promote products derived from 272665SN/A// this software without specific prior written permission. 282665SN/A// 29572SN/A// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30572SN/A// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 3111263Sandreas.sandberg@arm.com// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 3211263Sandreas.sandberg@arm.com// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33572SN/A// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34572SN/A// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3511263Sandreas.sandberg@arm.com// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 361153SN/A// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37572SN/A// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38572SN/A// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39572SN/A// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40572SN/A// 41572SN/A// Authors: Gabe Black 4210905SN/A 43572SN/A1: decode BIGTHUMB { 4410905SN/A // 16 bit thumb instructions. 4510905SN/A 0: decode TOPCODE_15_13 { 46572SN/A 0x0, 0x1: decode TOPCODE_13_11 { 47572SN/A 0x0: WarnUnimpl::lsl(); //immediate 48572SN/A 0x1: WarnUnimpl::lsr(); //immediate 4910905SN/A 0x2: WarnUnimpl::asr(); //immediate 50572SN/A 0x3: decode TOPCODE_10_9 { 5110905SN/A 0x0: WarnUnimpl::add(); //register 521654SN/A 0x1: WarnUnimpl::sub(); //register 5310905SN/A 0x2: WarnUnimpl::add(); //3 bit immediate 54572SN/A 0x3: WarnUnimpl::sub(); //3 bit immediate 5510923SN/A } 5610923SN/A 0x4: WarnUnimpl::mov(); //immediate 5710923SN/A 0x5: WarnUnimpl::cmp(); //immediate 5810923SN/A 0x6: WarnUnimpl::add(); //8 bit immediate, thumb 5910923SN/A 0x7: WarnUnimpl::sub(); //8 bit immediate, thumb 6010923SN/A } 6110923SN/A 0x2: decode TOPCODE_12_10 { 6210923SN/A // Data processing 6310923SN/A 0x0: decode TOPCODE_9_6 { 6410923SN/A 0x0: WarnUnimpl::and(); //register 6510923SN/A 0x1: WarnUnimpl::eor(); //register 6610923SN/A 0x2: WarnUnimpl::lsl(); //register 6710923SN/A 0x3: WarnUnimpl::lsr(); //register 6810923SN/A 0x4: WarnUnimpl::asr(); //register 6910923SN/A 0x5: WarnUnimpl::adc(); //register 7010923SN/A 0x6: WarnUnimpl::sbc(); //register 7110923SN/A 0x7: WarnUnimpl::ror(); //register 72 0x8: WarnUnimpl::tst(); //register 73 0x9: WarnUnimpl::rsb(); //immediate 74 0xa: WarnUnimpl::cmp(); //register (high registers) 75 0xb: WarnUnimpl::cmn(); //register 76 0xc: WarnUnimpl::orr(); //register 77 0xd: WarnUnimpl::mul(); 78 0xe: WarnUnimpl::bic(); //register 79 0xf: WarnUnimpl::mvn(); //register 80 } 81 // Special data instructions and branch and exchange 82 0x1: decode TOPCODE_9_6 { 83 0x0: WarnUnimpl::add(); //register (low registers) 84 0x1, 0x2, 0x3: WarnUnimpl::add(); //register (high registers) 85 0x4: WarnUnimpl::unpredictable(); //? 86 0x5, 0x6, 0x7: WarnUnimpl::cmp(); //register 87 0x8: WarnUnimpl::mov(); //register (low registers) 88 0x9, 0xa, 0xb: WarnUnimpl::mov(); //register (high registers) 89 0xc, 0xd: WarnUnimpl::bx(); 90 0xe, 0xf: WarnUnimpl::blx(); //register 91 } 92 0x2, 0x3: WarnUnimpl::ldr(); 93 default: decode TOPCODE_11_9 { 94 0x0: WarnUnimpl::str(); //register 95 0x1: WarnUnimpl::strh(); //register 96 0x2: WarnUnimpl::strb(); //register 97 0x3: WarnUnimpl::ldrsb(); //register 98 0x4: WarnUnimpl::ldr(); //register 99 0x5: WarnUnimpl::ldrh(); //register 100 0x6: WarnUnimpl::ldrb(); //register 101 0x7: WarnUnimpl::ldrsh(); //register 102 } 103 } 104 0x3: decode TOPCODE_12_11 { 105 0x0: WarnUnimpl::str(); //immediate, thumb 106 0x1: WarnUnimpl::ldr(); //immediate, thumb 107 0x2: WarnUnimpl::strb(); //immediate, thumb 108 0x3: WarnUnimpl::ldrb(); //immediate, thumb 109 } 110 0x4: decode TOPCODE_12_11 { 111 0x0: WarnUnimpl::strh(); //immediate, thumb 112 0x1: WarnUnimpl::ldrh(); //immediate, thumb 113 0x2: WarnUnimpl::str(); //immediate, thumb 114 0x3: WarnUnimpl::ldr(); //immediate, thumb 115 } 116 0x5: decode TOPCODE_12_11 { 117 0x0: WarnUnimpl::adr(); 118 0x1: WarnUnimpl::add(); //sp, immediate 119 0x2: decode TOPCODE_10_8 { 120 0x0: decode TOPCODE_7 { 121 0x0: WarnUnimpl::add(); //sp, immediate 122 0x1: WarnUnimpl::sub(); //sp, immediate 123 } 124 0x1, 0x3: WarnUnimpl::cbz(); //cbnz too... 125 0x2: decode TOPCODE_7_6 { 126 0x0: WarnUnimpl::sxth(); 127 0x1: WarnUnimpl::sxtb(); 128 0x2: WarnUnimpl::uxth(); 129 0x3: WarnUnimpl::uxtb(); 130 } 131 0x4, 0x5: WarnUnimpl::pop(); 132 0x6: decode TOPCODE_7_5 { 133 0x2: WarnUnimpl::setend(); 134 0x3: WarnUnimpl::cps(); 135 } 136 } 137 0x3: decode TOPCODE_10_8 { 138 0x1, 0x3: WarnUnimpl::cbz(); //cbnz too... 139 0x2: decode TOPCODE_7_6 { 140 0x0: WarnUnimpl::rev(); 141 0x1: WarnUnimpl::rev16(); 142 0x3: WarnUnimpl::revsh(); 143 } 144 0x4, 0x5: WarnUnimpl::pop(); 145 0x6: WarnUnimpl::bkpt(); 146 0x7: decode TOPCODE_3_0 { 147 0x0: WarnUnimpl::it(); 148 default: decode TOPCODE_7_4 { 149 0x0: WarnUnimpl::nop(); 150 0x1: WarnUnimpl::yield(); 151 0x2: WarnUnimpl::wfe(); 152 0x3: WarnUnimpl::wfi(); 153 0x4: WarnUnimpl::sev(); 154 default: WarnUnimpl::unallocated_hint(); 155 } 156 } 157 } 158 } 159 0x6: decode TOPCODE_12_11 { 160 0x0: WarnUnimpl::stm(); // also stmia, stmea 161 0x1: WarnUnimpl::ldm(); // also ldmia, ldmea 162 default: decode TOPCODE_11_8 { 163 0xe: WarnUnimpl::undefined(); // permanently undefined 164 0xf: WarnUnimpl::svc(); // formerly swi 165 default: WarnUnimpl::b(); // conditional 166 } 167 } 168 0x7: decode TOPCODE_12_11 { 169 0x0: WarnUnimpl::b(); // unconditional 170 } 171 } 172 173 // 32 bit thumb instructions. 174 1: decode HTOPCODE_12_11 { 175 0x1: decode HTOPCODE_10_9 { 176 0x0: decode HTOPCODE_8_6 { 177 0x0, 0x6: decode HTOPCODE_4 { 178 0x0: WarnUnimpl::srs(); 179 0x1: WarnUnimpl::rfe(); 180 } 181 0x1: decode HTOPCODE_5_4 { 182 0x0: WarnUnimpl::strex(); 183 0x1: WarnUnimpl::ldrex(); 184 0x2: WarnUnimpl::strd(); // immediate 185 0x3: decode HTRN { 186 0xf: WarnUnimpl::ldrd(); // literal 187 default: WarnUnimpl::ldrd(); // immediate 188 } 189 } 190 0x2: decode HTOPCODE_4 { 191 0x0: WarnUnimpl::stm(); // stmia, stmea 192 0x1: decode HTRN { 193 0xd: WarnUnimpl::pop(); 194 default: WarnUnimpl::ldm(); // ldmia, ldmfd 195 } 196 } 197 0x3: decode HTOPCODE_5_4 { 198 0x0: decode LTOPCODE_7_4 { 199 0x4: WarnUnimpl::strexb(); 200 0x5: WarnUnimpl::strexh(); 201 0x7: WarnUnimpl::strexd(); 202 } 203 0x1: decode LTOPCODE_7_4 { 204 0x0: WarnUnimpl::tbb(); 205 0x1: WarnUnimpl::tbh(); 206 0x4: WarnUnimpl::ldrexb(); 207 0x5: WarnUnimpl::ldrexh(); 208 0x7: WarnUnimpl::ldrexd(); 209 } 210 0x2: WarnUnimpl::strd(); // immediate 211 0x3: decode HTRN { 212 0xf: WarnUnimpl::ldrd(); // literal 213 default: WarnUnimpl::ldrd(); // immediate 214 } 215 } 216 0x4: decode HTOPCODE_4 { 217 0x0: decode HTRN { 218 0xd: WarnUnimpl::push(); 219 default: WarnUnimpl::stmdb(); // stmfd 220 } 221 0x1: WarnUnimpl::ldmdb(); // ldmea 222 } 223 0x5, 0x7: decode HTOPCODE_4 { 224 0x0: WarnUnimpl::strd(); // immediate 225 0x1: decode HTRN { 226 0xf: WarnUnimpl::ldrd(); // literal 227 default: WarnUnimpl::ldrd(); // immediate 228 } 229 } 230 } 231 0x1: decode HTOPCODE_8_5 { 232 0x0: decode LTRD { 233 0xf: decode HTS { 234 0x1: WarnUnimpl::tst(); // register 235 } 236 default: WarnUnimpl::and(); // register 237 } 238 0x1: WarnUnimpl::bic(); // register 239 0x2: decode HTRN { 240 0xf: WarnUnimpl::mov(); // register 241 default: WarnUnimpl::orr(); // register 242 } 243 0x3: decode HTRN { 244 0xf: WarnUnimpl::mvn(); // register 245 default: WarnUnimpl::orn(); // register 246 } 247 0x4: decode LTRD { 248 0xf: decode HTS { 249 0x1: WarnUnimpl::teq(); // register 250 } 251 default: WarnUnimpl::eor(); // register 252 } 253 0x6: WarnUnimpl::pkh(); 254 0x8: decode LTRD { 255 0xf: decode HTS { 256 0x1: WarnUnimpl::cmn(); // register 257 } 258 default: WarnUnimpl::add(); // register 259 } 260 0xa: WarnUnimpl::adc(); // register 261 0xb: WarnUnimpl::sbc(); // register 262 0xd: decode LTRD { 263 0xf: decode HTS { 264 0x1: WarnUnimpl::cmp(); // register 265 } 266 default: WarnUnimpl::sub(); // register 267 } 268 0xe: WarnUnimpl::rsb(); // register 269 } 270 default: decode HTOPCODE_9_8 { 271 0x2: decode LTOPCODE_4 { 272 0x0: decode LTCOPROC { 273 0xa, 0xb: decode OPCODE_23_20 { 274##include "vfpdecode.isa" 275 } 276 default: WarnUnimpl::cdp(); // cdp2 277 } 278 0x1: decode LTCOPROC { 279 0xa, 0xb: WarnUnimpl::Core_to_extension_transfer(); 280 default: decode HTOPCODE_4 { 281 0x0: WarnUnimpl::mcr(); // mcr2 282 0x1: WarnUnimpl::mrc(); // mrc2 283 } 284 } 285 } 286 0x3: WarnUnimpl::Advanced_SIMD(); 287 default: decode LTCOPROC { 288 0xa, 0xb: decode HTOPCODE_9_4 { 289 0x00: WarnUnimpl::undefined(); 290 0x04: WarnUnimpl::mcrr(); // mcrr2 291 0x05: WarnUnimpl::mrrc(); // mrrc2 292 0x02, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 293 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e: 294 WarnUnimpl::stc(); // stc2 295 0x03, 0x07, 0x09, 0x0b, 0x0d, 0x0f, 0x11, 296 0x13, 0x15, 0x17, 0x19, 0x1b, 0x1d, 0x1f: 297 decode HTRN { 298 0xf: WarnUnimpl::ldc(); // ldc2 (literal) 299 default: WarnUnimpl::ldc(); // ldc2 (immediate) 300 } 301 } 302 default: decode HTOPCODE_9_5 { 303 0x00: WarnUnimpl::undefined(); 304 0x02: WarnUnimpl::SIMD_VFP_64_bit_core_extension_transfer(); 305 0x01, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 306 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f: 307 WarnUnimpl::Extension_register_load_store_instruction(); 308 } 309 } 310 } 311 } 312 0x2: decode LTOPCODE_15 { 313 0x0: decode HTOPCODE_9 { 314 0x0: decode HTOPCODE_8_5 { 315 0x0: decode LTRD { 316 0xf: decode HTS { 317 0x1: WarnUnimpl::tst(); // mod imm 318 } 319 default: WarnUnimpl::and(); // mod imm 320 } 321 0x1: WarnUnimpl::bic(); // mod imm 322 0x2: decode HTRN { 323 0xf: WarnUnimpl::mov(); // mod imm 324 default: WarnUnimpl::orr(); // mod imm 325 } 326 0x3: decode HTRN { 327 0xf: WarnUnimpl::mvn(); // mod imm 328 default: WarnUnimpl::orn(); // mod imm 329 } 330 0x4: decode LTRD { 331 0xf: decode HTS { 332 0x1: WarnUnimpl::teq(); // mod imm 333 } 334 default: WarnUnimpl::eor(); // mod imm 335 } 336 0x8: decode LTRD { 337 0xf: decode HTS { 338 0x1: WarnUnimpl::cmn(); // mod imm 339 } 340 default: WarnUnimpl::add(); // mod imm 341 } 342 0xa: WarnUnimpl::adc(); // mod imm 343 0xb: WarnUnimpl::sbc(); // mod imm 344 0xd: decode LTRD { 345 0xf: decode HTS { 346 0x1: WarnUnimpl::cmp(); // mod imm 347 } 348 default: WarnUnimpl::sub(); // mod imm 349 } 350 0xe: WarnUnimpl::rsb(); // mod imm 351 } 352 0x1: WarnUnimpl::Data_processing_plain_binary_immediate(); 353 } 354 0x1: WarnUnimpl::Branches_and_miscellaneous_control(); 355 } 356 0x3: decode HTOPCODE_10_9 { 357 0x0: decode HTOPCODE_4 { 358 0x0: decode HTOPCODE_8 { 359 0x0: WarnUnimpl::Store_single_data_item(); 360 0x1: WarnUnimpl::Advanced_SIMD_or_structure_load_store(); 361 } 362 0x1: decode HTOPCODE_6_5 { 363 0x0: WarnUnimpl::Load_byte_memory_hints(); 364 0x1: WarnUnimpl::Load_halfword_memory_hints(); 365 0x2: WarnUnimpl::Load_word(); 366 0x3: WarnUnimpl::undefined(); 367 } 368 } 369 0x1: decode HTOPCODE_8_7 { 370 0x2: WarnUnimpl::Multiply_multiply_accumulate_and_absolute_difference(); 371 0x3: WarnUnimpl::Long_multiply_long_multiply_accumulate_and_divide(); 372 default: WarnUnimpl::Data_processing_register(); 373 } 374 default: decode HTOPCODE_9_8 { 375 0x2: decode LTOPCODE_4 { 376 0x0: decode LTCOPROC { 377 0xa, 0xb: WarnUnimpl::VFP_Inst(); 378 default: WarnUnimpl::cdp(); // cdp2 379 } 380 0x1: decode LTCOPROC { 381 0xa, 0xb: WarnUnimpl::Core_to_extension_transfer(); 382 default: decode HTOPCODE_4 { 383 0x0: WarnUnimpl::mcr(); // mcr2 384 0x1: WarnUnimpl::mrc(); // mrc2 385 } 386 } 387 } 388 0x3: WarnUnimpl::Advanced_SIMD(); 389 default: decode LTCOPROC { 390 0xa, 0xb: decode HTOPCODE_9_4 { 391 0x00: WarnUnimpl::undefined(); 392 0x04: WarnUnimpl::mcrr(); // mcrr2 393 0x05: WarnUnimpl::mrrc(); // mrrc2 394 0x02, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 395 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e: 396 WarnUnimpl::stc(); // stc2 397 0x03, 0x07, 0x09, 0x0b, 0x0d, 0x0f, 0x11, 398 0x13, 0x15, 0x17, 0x19, 0x1b, 0x1d, 0x1f: 399 decode HTRN { 400 0xf: WarnUnimpl::ldc(); // ldc2 (literal) 401 default: WarnUnimpl::ldc(); // ldc2 (immediate) 402 } 403 } 404 default: decode HTOPCODE_9_5 { 405 0x00: WarnUnimpl::undefined(); 406 0x02: WarnUnimpl::SIMD_VFP_64_bit_core_extension_transfer(); 407 0x01, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 408 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f: 409 WarnUnimpl::Extension_register_load_store_instruction(); 410 } 411 } 412 } 413 } 414 } 415} 416